diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 22:18:34 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 22:18:34 +0400 |
| commit | 4f567cbc957a7cffd1a428a000d93bd903f42349 (patch) | |
| tree | e648bfed3732a23031a32811b20975827dad62d2 | |
| parent | 92ddcf4a011a95dac98d3bbb0211a2fa42f13dc1 (diff) | |
| parent | 0e27263926699fcbbd574cff4dd6920007a50e8a (diff) | |
| download | linux-4f567cbc957a7cffd1a428a000d93bd903f42349.tar.xz | |
Merge tag 'char-misc-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver update from Greg Kroah-Hartman:
"Here's the big char / misc driver update for 3.10-rc1
A number of various driver updates, the majority being new
functionality in the MEI driver subsystem (it's now a subsystem, it
started out just a single driver), extcon updates, memory updates,
hyper-v updates, and a bunch of other small stuff that doesn't fit in
any other tree.
All of these have been in linux-next for a while"
* tag 'char-misc-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (148 commits)
Tools: hv: Fix a checkpatch warning
tools: hv: skip iso9660 mounts in hv_vss_daemon
tools: hv: use FIFREEZE/FITHAW in hv_vss_daemon
tools: hv: use getmntent in hv_vss_daemon
Tools: hv: Fix a checkpatch warning
tools: hv: fix checks for origin of netlink message in hv_vss_daemon
Tools: hv: fix warnings in hv_vss_daemon
misc: mark spear13xx-pcie-gadget as broken
mei: fix krealloc() misuse in in mei_cl_irq_read_msg()
mei: reduce flow control only for completed messages
mei: reseting -> resetting
mei: fix reading large reposnes
mei: revamp mei_irq_read_client_message function
mei: revamp mei_amthif_irq_read_message
mei: revamp hbm state machine
Revert "drivers/scsi: use module_pcmcia_driver() in pcmcia drivers"
Revert "scsi: pcmcia: nsp_cs: remove module init/exit function prototypes"
scsi: pcmcia: nsp_cs: remove module init/exit function prototypes
mei: wd: fix line over 80 characters
misc: tsl2550: Use dev_pm_ops
...
131 files changed, 4596 insertions, 1331 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-mei b/Documentation/ABI/testing/sysfs-bus-mei new file mode 100644 index 000000000000..2066f0bbd453 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-mei @@ -0,0 +1,7 @@ +What: /sys/bus/mei/devices/.../modalias +Date: March 2013 +KernelVersion: 3.10 +Contact: Samuel Ortiz <sameo@linux.intel.com> + linux-mei@linux.intel.com +Description: Stores the same MODALIAS value emitted by uevent + Format: mei:<mei device name> diff --git a/Documentation/devicetree/bindings/arm/msm/ssbi.txt b/Documentation/devicetree/bindings/arm/msm/ssbi.txt new file mode 100644 index 000000000000..54fd5ced3401 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/msm/ssbi.txt @@ -0,0 +1,18 @@ +* Qualcomm SSBI + +Some Qualcomm MSM devices contain a point-to-point serial bus used to +communicate with a limited range of devices (mostly power management +chips). + +These require the following properties: + +- compatible: "qcom,ssbi" + +- qcom,controller-type + indicates the SSBI bus variant the controller should use to talk + with the slave device. This should be one of "ssbi", "ssbi2", or + "pmic-arbiter". The type chosen is determined by the attached + slave. + +The slave device should be the single child node of the ssbi device +with a compatible field. diff --git a/Documentation/misc-devices/mei/mei-client-bus.txt b/Documentation/misc-devices/mei/mei-client-bus.txt new file mode 100644 index 000000000000..f83910a8ce76 --- /dev/null +++ b/Documentation/misc-devices/mei/mei-client-bus.txt @@ -0,0 +1,138 @@ +Intel(R) Management Engine (ME) Client bus API +=============================================== + + +Rationale +========= +MEI misc character device is useful for dedicated applications to send and receive +data to the many FW appliance found in Intel's ME from the user space. +However for some of the ME functionalities it make sense to leverage existing software +stack and expose them through existing kernel subsystems. + +In order to plug seamlessly into the kernel device driver model we add kernel virtual +bus abstraction on top of the MEI driver. This allows implementing linux kernel drivers +for the various MEI features as a stand alone entities found in their respective subsystem. +Existing device drivers can even potentially be re-used by adding an MEI CL bus layer to +the existing code. + + +MEI CL bus API +=========== +A driver implementation for an MEI Client is very similar to existing bus +based device drivers. The driver registers itself as an MEI CL bus driver through +the mei_cl_driver structure: + +struct mei_cl_driver { + struct device_driver driver; + const char *name; + + const struct mei_cl_device_id *id_table; + + int (*probe)(struct mei_cl_device *dev, const struct mei_cl_id *id); + int (*remove)(struct mei_cl_device *dev); +}; + +struct mei_cl_id { + char name[MEI_NAME_SIZE]; + kernel_ulong_t driver_info; +}; + +The mei_cl_id structure allows the driver to bind itself against a device name. + +To actually register a driver on the ME Client bus one must call the mei_cl_add_driver() +API. This is typically called at module init time. + +Once registered on the ME Client bus, a driver will typically try to do some I/O on +this bus and this should be done through the mei_cl_send() and mei_cl_recv() +routines. The latter is synchronous (blocks and sleeps until data shows up). +In order for drivers to be notified of pending events waiting for them (e.g. +an Rx event) they can register an event handler through the +mei_cl_register_event_cb() routine. Currently only the MEI_EVENT_RX event +will trigger an event handler call and the driver implementation is supposed +to call mei_recv() from the event handler in order to fetch the pending +received buffers. + + +Example +======= +As a theoretical example let's pretend the ME comes with a "contact" NFC IP. +The driver init and exit routines for this device would look like: + +#define CONTACT_DRIVER_NAME "contact" + +static struct mei_cl_device_id contact_mei_cl_tbl[] = { + { CONTACT_DRIVER_NAME, }, + + /* required last entry */ + { } +}; +MODULE_DEVICE_TABLE(mei_cl, contact_mei_cl_tbl); + +static struct mei_cl_driver contact_driver = { + .id_table = contact_mei_tbl, + .name = CONTACT_DRIVER_NAME, + + .probe = contact_probe, + .remove = contact_remove, +}; + +static int contact_init(void) +{ + int r; + + r = mei_cl_driver_register(&contact_driver); + if (r) { + pr_err(CONTACT_DRIVER_NAME ": driver registration failed\n"); + return r; + } + + return 0; +} + +static void __exit contact_exit(void) +{ + mei_cl_driver_unregister(&contact_driver); +} + +module_init(contact_init); +module_exit(contact_exit); + +And the driver's simplified probe routine would look like that: + +int contact_probe(struct mei_cl_device *dev, struct mei_cl_device_id *id) +{ + struct contact_driver *contact; + + [...] + mei_cl_enable_device(dev); + + mei_cl_register_event_cb(dev, contact_event_cb, contact); + + return 0; + } + +In the probe routine the driver first enable the MEI device and then registers +an ME bus event handler which is as close as it can get to registering a +threaded IRQ handler. +The handler implementation will typically call some I/O routine depending on +the pending events: + +#define MAX_NFC_PAYLOAD 128 + +static void contact_event_cb(struct mei_cl_device *dev, u32 events, + void *context) +{ + struct contact_driver *contact = context; + + if (events & BIT(MEI_EVENT_RX)) { + u8 payload[MAX_NFC_PAYLOAD]; + int payload_size; + + payload_size = mei_recv(dev, payload, MAX_NFC_PAYLOAD); + if (payload_size <= 0) + return; + + /* Hook to the NFC subsystem */ + nfc_hci_recv_frame(contact->hdev, payload, payload_size); + } +} diff --git a/MAINTAINERS b/MAINTAINERS index fb2fc3026968..8ba3b484d826 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1031,6 +1031,7 @@ F: drivers/mmc/host/msm_sdcc.h F: drivers/tty/serial/msm_serial.h F: drivers/tty/serial/msm_serial.c F: drivers/*/pm8???-* +F: drivers/ssbi/ F: include/linux/mfd/pm8xxx/ T: git git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm.git S: Maintained diff --git a/arch/arm/boot/dts/msm8660-surf.dts b/arch/arm/boot/dts/msm8660-surf.dts index 31f2157cd7d7..67f8670c4d6a 100644 --- a/arch/arm/boot/dts/msm8660-surf.dts +++ b/arch/arm/boot/dts/msm8660-surf.dts @@ -38,4 +38,10 @@ <0x19c00000 0x1000>; interrupts = <0 195 0x0>; }; + + qcom,ssbi@500000 { + compatible = "qcom,ssbi"; + reg = <0x500000 0x1000>; + qcom,controller-type = "pmic-arbiter"; + }; }; diff --git a/arch/arm/boot/dts/msm8960-cdp.dts b/arch/arm/boot/dts/msm8960-cdp.dts index 9e621b5ad3dd..c9b09a813a4b 100644 --- a/arch/arm/boot/dts/msm8960-cdp.dts +++ b/arch/arm/boot/dts/msm8960-cdp.dts @@ -38,4 +38,10 @@ <0x16400000 0x1000>; interrupts = <0 154 0x0>; }; + + qcom,ssbi@500000 { + compatible = "qcom,ssbi"; + reg = <0x500000 0x1000>; + qcom,controller-type = "pmic-arbiter"; + }; }; diff --git a/drivers/Kconfig b/drivers/Kconfig index 202fa6d051b9..78a956e286e6 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -52,6 +52,8 @@ source "drivers/i2c/Kconfig" source "drivers/spi/Kconfig" +source "drivers/ssbi/Kconfig" + source "drivers/hsi/Kconfig" source "drivers/pps/Kconfig" diff --git a/drivers/Makefile b/drivers/Makefile index dce39a95fa71..4865ed24708a 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -114,6 +114,7 @@ obj-y += firmware/ obj-$(CONFIG_CRYPTO) += crypto/ obj-$(CONFIG_SUPERH) += sh/ obj-$(CONFIG_ARCH_SHMOBILE) += sh/ +obj-$(CONFIG_SSBI) += ssbi/ ifndef CONFIG_ARCH_USES_GETTIMEOFFSET obj-y += clocksource/ endif diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c index 958238dda8fc..40254f4df584 100644 --- a/drivers/ata/pata_pcmcia.c +++ b/drivers/ata/pata_pcmcia.c @@ -387,21 +387,9 @@ static struct pcmcia_driver pcmcia_driver = { .probe = pcmcia_init_one, .remove = pcmcia_remove_one, }; - -static int __init pcmcia_init(void) -{ - return pcmcia_register_driver(&pcmcia_driver); -} - -static void __exit pcmcia_exit(void) -{ - pcmcia_unregister_driver(&pcmcia_driver); -} +module_pcmcia_driver(pcmcia_driver); MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for PCMCIA ATA"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); - -module_init(pcmcia_init); -module_exit(pcmcia_exit); diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c index 0d26851d6e49..6c3e3d43c718 100644 --- a/drivers/bluetooth/bluecard_cs.c +++ b/drivers/bluetooth/bluecard_cs.c @@ -934,17 +934,4 @@ static struct pcmcia_driver bluecard_driver = { .remove = bluecard_detach, .id_table = bluecard_ids, }; - -static int __init init_bluecard_cs(void) -{ - return pcmcia_register_driver(&bluecard_driver); -} - - -static void __exit exit_bluecard_cs(void) -{ - pcmcia_unregister_driver(&bluecard_driver); -} - -module_init(init_bluecard_cs); -module_exit(exit_bluecard_cs); +module_pcmcia_driver(bluecard_driver); diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c index 7ffd3f407144..a1aaa3ba2a4b 100644 --- a/drivers/bluetooth/bt3c_cs.c +++ b/drivers/bluetooth/bt3c_cs.c @@ -760,17 +760,4 @@ static struct pcmcia_driver bt3c_driver = { .remove = bt3c_detach, .id_table = bt3c_ids, }; - -static int __init init_bt3c_cs(void) -{ - return pcmcia_register_driver(&bt3c_driver); -} - - -static void __exit exit_bt3c_cs(void) -{ - pcmcia_unregister_driver(&bt3c_driver); -} - -module_init(init_bt3c_cs); -module_exit(exit_bt3c_cs); +module_pcmcia_driver(bt3c_driver); diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c index 35a553a90616..beb262f2dc4d 100644 --- a/drivers/bluetooth/btuart_cs.c +++ b/drivers/bluetooth/btuart_cs.c @@ -688,17 +688,4 @@ static struct pcmcia_driver btuart_driver = { .remove = btuart_detach, .id_table = btuart_ids, }; - -static int __init init_btuart_cs(void) -{ - return pcmcia_register_driver(&btuart_driver); -} - - -static void __exit exit_btuart_cs(void) -{ - pcmcia_unregister_driver(&btuart_driver); -} - -module_init(init_btuart_cs); -module_exit(exit_btuart_cs); +module_pcmcia_driver(btuart_driver); diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c index 036cb366fe6e..33f3a6950c0e 100644 --- a/drivers/bluetooth/dtl1_cs.c +++ b/drivers/bluetooth/dtl1_cs.c @@ -628,17 +628,4 @@ static struct pcmcia_driver dtl1_driver = { .remove = dtl1_detach, .id_table = dtl1_ids, }; - -static int __init init_dtl1_cs(void) -{ - return pcmcia_register_driver(&dtl1_driver); -} - - -static void __exit exit_dtl1_cs(void) -{ - pcmcia_unregister_driver(&dtl1_driver); -} - -module_init(init_dtl1_cs); -module_exit(exit_dtl1_cs); +module_pcmcia_driver(dtl1_driver); diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c index 25373df1dcf8..974321a2508d 100644 --- a/drivers/char/applicom.c +++ b/drivers/char/applicom.c @@ -804,8 +804,8 @@ static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg) printk(KERN_INFO "Prom version board %d ....... V%d.%d %s", i+1, - (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4), - (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF), + (int)(readb(apbs[i].RamIO + VERS) >> 4), + (int)(readb(apbs[i].RamIO + VERS) & 0xF), boardname); diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c index f05d85713fd3..895d0b8fb9ab 100644 --- a/drivers/char/hw_random/mxc-rnga.c +++ b/drivers/char/hw_random/mxc-rnga.c @@ -228,18 +228,7 @@ static struct platform_driver mxc_rnga_driver = { .remove = __exit_p(mxc_rnga_remove), }; -static int __init mod_init(void) -{ - return platform_driver_probe(&mxc_rnga_driver, mxc_rnga_probe); -} - -static void __exit mod_exit(void) -{ - platform_driver_unregister(&mxc_rnga_driver); -} - -module_init(mod_init); -module_exit(mod_exit); +module_platform_driver_probe(mxc_rnga_driver, mxc_rnga_probe); MODULE_AUTHOR("Freescale Semiconductor, Inc."); MODULE_DESCRIPTION("H/W RNGA driver for i.MX"); diff --git a/drivers/char/hw_random/tx4939-rng.c b/drivers/char/hw_random/tx4939-rng.c index 30991989d65b..d34a24a0d484 100644 --- a/drivers/char/hw_random/tx4939-rng.c +++ b/drivers/char/hw_random/tx4939-rng.c @@ -166,18 +166,7 @@ static struct platform_driver tx4939_rng_driver = { .remove = tx4939_rng_remove, }; -static int __init tx4939rng_init(void) -{ - return platform_driver_probe(&tx4939_rng_driver, tx4939_rng_probe); -} - -static void __exit tx4939rng_exit(void) -{ - platform_driver_unregister(&tx4939_rng_driver); -} - -module_init(tx4939rng_init); -module_exit(tx4939rng_exit); +module_platform_driver_probe(tx4939_rng_driver, tx4939_rng_probe); MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver for TX4939"); MODULE_LICENSE("GPL"); diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c index 3b22a606f79d..2e2036e940fc 100644 --- a/drivers/char/tile-srom.c +++ b/drivers/char/tile-srom.c @@ -371,7 +371,7 @@ static int srom_setup_minor(struct srom_dev *srom, int index) dev = device_create(srom_class, &platform_bus, MKDEV(srom_major, index), srom, "%d", index); - return IS_ERR(dev) ? PTR_ERR(dev) : 0; + return PTR_RET(dev); } /** srom_init() - Initialize the driver's module. */ diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c index dc357a4051f6..7a1b4a7791ba 100644 --- a/drivers/extcon/extcon-arizona.c +++ b/drivers/extcon/extcon-arizona.c @@ -33,12 +33,17 @@ #include <linux/mfd/arizona/pdata.h> #include <linux/mfd/arizona/registers.h> -#define ARIZONA_NUM_BUTTONS 6 +#define ARIZONA_MAX_MICD_RANGE 8 #define ARIZONA_ACCDET_MODE_MIC 0 #define ARIZONA_ACCDET_MODE_HPL 1 #define ARIZONA_ACCDET_MODE_HPR 2 +#define ARIZONA_HPDET_MAX 10000 + +#define HPDET_DEBOUNCE 500 +#define DEFAULT_MICD_TIMEOUT 2000 + struct arizona_extcon_info { struct device *dev; struct arizona *arizona; @@ -46,17 +51,27 @@ struct arizona_extcon_info { struct regulator *micvdd; struct input_dev *input; + u16 last_jackdet; + int micd_mode; const struct arizona_micd_config *micd_modes; int micd_num_modes; + const struct arizona_micd_range *micd_ranges; + int num_micd_ranges; + + int micd_timeout; + bool micd_reva; bool micd_clamp; struct delayed_work hpdet_work; + struct delayed_work micd_detect_work; + struct delayed_work micd_timeout_work; bool hpdet_active; bool hpdet_done; + bool hpdet_retried; int num_hpdet_res; unsigned int hpdet_res[3]; @@ -71,20 +86,25 @@ struct arizona_extcon_info { }; static const struct arizona_micd_config micd_default_modes[] = { - { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 }, { ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 }, + { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 }, }; -static struct { - u16 status; - int report; -} arizona_lvl_to_key[ARIZONA_NUM_BUTTONS] = { - { 0x1, BTN_0 }, - { 0x2, BTN_1 }, - { 0x4, BTN_2 }, - { 0x8, BTN_3 }, - { 0x10, BTN_4 }, - { 0x20, BTN_5 }, +static const struct arizona_micd_range micd_default_ranges[] = { + { .max = 11, .key = BTN_0 }, + { .max = 28, .key = BTN_1 }, + { .max = 54, .key = BTN_2 }, + { .max = 100, .key = BTN_3 }, + { .max = 186, .key = BTN_4 }, + { .max = 430, .key = BTN_5 }, +}; + +static const int arizona_micd_levels[] = { + 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46, + 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100, + 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245, + 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071, + 1257, }; #define ARIZONA_CABLE_MECHANICAL 0 @@ -100,10 +120,63 @@ static const char *arizona_cable[] = { NULL, }; +static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info); + +static void arizona_extcon_do_magic(struct arizona_extcon_info *info, + unsigned int magic) +{ + struct arizona *arizona = info->arizona; + int ret; + + mutex_lock(&arizona->dapm->card->dapm_mutex); + + arizona->hpdet_magic = magic; + + /* Keep the HP output stages disabled while doing the magic */ + if (magic) { + ret = regmap_update_bits(arizona->regmap, + ARIZONA_OUTPUT_ENABLES_1, + ARIZONA_OUT1L_ENA | + ARIZONA_OUT1R_ENA, 0); + if (ret != 0) + dev_warn(arizona->dev, + "Failed to disable headphone outputs: %d\n", + ret); + } + + ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, + magic); + if (ret != 0) + dev_warn(arizona->dev, "Failed to do magic: %d\n", + ret); + + ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, + magic); + if (ret != 0) + dev_warn(arizona->dev, "Failed to do magic: %d\n", + ret); + + /* Restore the desired state while not doing the magic */ + if (!magic) { + ret = regmap_update_bits(arizona->regmap, + ARIZONA_OUTPUT_ENABLES_1, + ARIZONA_OUT1L_ENA | + ARIZONA_OUT1R_ENA, arizona->hp_ena); + if (ret != 0) + dev_warn(arizona->dev, + "Failed to restore headphone outputs: %d\n", + ret); + } + + mutex_unlock(&arizona->dapm->card->dapm_mutex); +} + static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode) { struct arizona *arizona = info->arizona; + mode %= info->micd_num_modes; + if (arizona->pdata.micd_pol_gpio > 0) gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio, info->micd_modes[mode].gpio); @@ -330,7 +403,7 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info) /* If we go out of range report top of range */ if (val < 100 || val > 0x3fb) { dev_dbg(arizona->dev, "Measurement out of range\n"); - return 10000; + return ARIZONA_HPDET_MAX; } dev_dbg(arizona->dev, "HPDET read %d in range %d\n", @@ -391,7 +464,8 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info) return val; } -static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading) +static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading, + bool *mic) { struct arizona *arizona = info->arizona; int id_gpio = arizona->pdata.hpdet_id_gpio; @@ -403,32 +477,8 @@ static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading) if (arizona->pdata.hpdet_acc_id) { info->hpdet_res[info->num_hpdet_res++] = *reading; - /* - * If the impedence is too high don't measure the - * second ground. - */ - if (info->num_hpdet_res == 1 && *reading >= 45) { - dev_dbg(arizona->dev, "Skipping ground flip\n"); - info->hpdet_res[info->num_hpdet_res++] = *reading; - } - - if (info->num_hpdet_res == 1) { - dev_dbg(arizona->dev, "Flipping ground\n"); - - regmap_update_bits(arizona->regmap, - ARIZONA_ACCESSORY_DETECT_MODE_1, - ARIZONA_ACCDET_SRC, - ~info->micd_modes[0].src); - - regmap_update_bits(arizona->regmap, - ARIZONA_HEADPHONE_DETECT_1, - ARIZONA_HP_POLL, ARIZONA_HP_POLL); - return -EAGAIN; - } - /* Only check the mic directly if we didn't already ID it */ - if (id_gpio && info->num_hpdet_res == 2 && - !((info->hpdet_res[0] > info->hpdet_res[1] * 2))) { + if (id_gpio && info->num_hpdet_res == 1) { dev_dbg(arizona->dev, "Measuring mic\n"); regmap_update_bits(arizona->regmap, @@ -447,22 +497,28 @@ static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading) } /* OK, got both. Now, compare... */ - dev_dbg(arizona->dev, "HPDET measured %d %d %d\n", - info->hpdet_res[0], info->hpdet_res[1], - info->hpdet_res[2]); - + dev_dbg(arizona->dev, "HPDET measured %d %d\n", + info->hpdet_res[0], info->hpdet_res[1]); /* Take the headphone impedance for the main report */ *reading = info->hpdet_res[0]; + /* Sometimes we get false readings due to slow insert */ + if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) { + dev_dbg(arizona->dev, "Retrying high impedance\n"); + info->num_hpdet_res = 0; + info->hpdet_retried = true; + arizona_start_hpdet_acc_id(info); + pm_runtime_put(info->dev); + return -EAGAIN; + } + /* - * Either the two grounds measure differently or we - * measure the mic as high impedance. + * If we measure the mic as */ - if ((info->hpdet_res[0] > info->hpdet_res[1] * 2) || - (id_gpio && info->hpdet_res[2] > 10)) { + if (!id_gpio || info->hpdet_res[1] > 50) { dev_dbg(arizona->dev, "Detected mic\n"); - info->mic = true; + *mic = true; info->detecting = true; } else { dev_dbg(arizona->dev, "Detected headphone\n"); @@ -484,8 +540,8 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) struct arizona *arizona = info->arizona; int id_gpio = arizona->pdata.hpdet_id_gpio; int report = ARIZONA_CABLE_HEADPHONE; - unsigned int val; int ret, reading; + bool mic = false; mutex_lock(&info->lock); @@ -521,7 +577,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL, 0); - ret = arizona_hpdet_do_id(info, &reading); + ret = arizona_hpdet_do_id(info, &reading, &mic); if (ret == -EAGAIN) { goto out; } else if (ret < 0) { @@ -539,28 +595,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) dev_err(arizona->dev, "Failed to report HP/line: %d\n", ret); - mutex_lock(&arizona->dapm->card->dapm_mutex); - - ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val); - if (ret != 0) { - dev_err(arizona->dev, "Failed to read output enables: %d\n", - ret); - val = 0; - } - - if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) { - ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0); - if (ret != 0) - dev_warn(arizona->dev, "Failed to undo magic: %d\n", - ret); - - ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0); - if (ret != 0) - dev_warn(arizona->dev, "Failed to undo magic: %d\n", - ret); - } - - mutex_unlock(&arizona->dapm->card->dapm_mutex); + arizona_extcon_do_magic(info, 0); done: if (id_gpio) @@ -572,7 +607,7 @@ done: ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC); /* If we have a mic then reenable MICDET */ - if (info->mic) + if (mic || info->mic) arizona_start_mic(info); if (info->hpdet_active) { @@ -606,13 +641,7 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info) if (info->mic) arizona_stop_mic(info); - ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0x4000); - if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", ret); - - ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0x4000); - if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", ret); + arizona_extcon_do_magic(info, 0x4000); ret = regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, @@ -653,7 +682,8 @@ err: static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; - unsigned int val; + int hp_reading = 32; + bool mic; int ret; dev_dbg(arizona->dev, "Starting identification via HPDET\n"); @@ -663,32 +693,7 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info) info->hpdet_active = true; - arizona_extcon_pulse_micbias(info); - - mutex_lock(&arizona->dapm->card->dapm_mutex); - - ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val); - if (ret != 0) { - dev_err(arizona->dev, "Failed to read output enables: %d\n", - ret); - val = 0; - } - - if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) { - ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, - 0x4000); - if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", - ret); - - ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, - 0x4000); - if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", - ret); - } - - mutex_unlock(&arizona->dapm->card->dapm_mutex); + arizona_extcon_do_magic(info, 0x4000); ret = regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, @@ -700,12 +705,18 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info) goto err; } - ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, - ARIZONA_HP_POLL, ARIZONA_HP_POLL); - if (ret != 0) { - dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n", - ret); - goto err; + if (arizona->pdata.hpdet_acc_id_line) { + ret = regmap_update_bits(arizona->regmap, + ARIZONA_HEADPHONE_DETECT_1, + ARIZONA_HP_POLL, ARIZONA_HP_POLL); + if (ret != 0) { + dev_err(arizona->dev, + "Can't start HPDETL measurement: %d\n", + ret); + goto err; + } + } else { + arizona_hpdet_do_id(info, &hp_reading, &mic); } return; @@ -724,28 +735,58 @@ err: info->hpdet_active = false; } -static irqreturn_t arizona_micdet(int irq, void *data) +static void arizona_micd_timeout_work(struct work_struct *work) { - struct arizona_extcon_info *info = data; + struct arizona_extcon_info *info = container_of(work, + struct arizona_extcon_info, + micd_timeout_work.work); + + mutex_lock(&info->lock); + + dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n"); + arizona_identify_headphone(info); + + info->detecting = false; + + arizona_stop_mic(info); + + mutex_unlock(&info->lock); +} + +static void arizona_micd_detect(struct work_struct *work) +{ + struct arizona_extcon_info *info = container_of(work, + struct arizona_extcon_info, + micd_detect_work.work); struct arizona *arizona = info->arizona; - unsigned int val, lvl; - int ret, i; + unsigned int val = 0, lvl; + int ret, i, key; + + cancel_delayed_work_sync(&info->micd_timeout_work); mutex_lock(&info->lock); - ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val); - if (ret != 0) { - dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret); - mutex_unlock(&info->lock); - return IRQ_NONE; - } + for (i = 0; i < 10 && !(val & 0x7fc); i++) { + ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val); + if (ret != 0) { + dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret); + mutex_unlock(&info->lock); + return; + } - dev_dbg(arizona->dev, "MICDET: %x\n", val); + dev_dbg(arizona->dev, "MICDET: %x\n", val); + + if (!(val & ARIZONA_MICD_VALID)) { + dev_warn(arizona->dev, "Microphone detection state invalid\n"); + mutex_unlock(&info->lock); + return; + } + } - if (!(val & ARIZONA_MICD_VALID)) { - dev_warn(arizona->dev, "Microphone detection state invalid\n"); + if (i == 10 && !(val & 0x7fc)) { + dev_err(arizona->dev, "Failed to get valid MICDET value\n"); mutex_unlock(&info->lock); - return IRQ_NONE; + return; } /* Due to jack detect this should never happen */ @@ -786,7 +827,7 @@ static irqreturn_t arizona_micdet(int irq, void *data) * impedence then give up and report headphones. */ if (info->detecting && (val & 0x3f8)) { - if (info->jack_flips >= info->micd_num_modes) { + if (info->jack_flips >= info->micd_num_modes * 10) { dev_dbg(arizona->dev, "Detected HP/line\n"); arizona_identify_headphone(info); @@ -816,12 +857,17 @@ static irqreturn_t arizona_micdet(int irq, void *data) lvl = val & ARIZONA_MICD_LVL_MASK; lvl >>= ARIZONA_MICD_LVL_SHIFT; - for (i = 0; i < ARIZONA_NUM_BUTTONS; i++) - if (lvl & arizona_lvl_to_key[i].status) - input_report_key(info->input, - arizona_lvl_to_key[i].report, - 1); - input_sync(info->input); + for (i = 0; i < info->num_micd_ranges; i++) + input_report_key(info->input, + info->micd_ranges[i].key, 0); + + WARN_ON(!lvl); + WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges); + if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) { + key = info->micd_ranges[ffs(lvl) - 1].key; + input_report_key(info->input, key, 1); + input_sync(info->input); + } } else if (info->detecting) { dev_dbg(arizona->dev, "Headphone detected\n"); @@ -835,16 +881,41 @@ static irqreturn_t arizona_micdet(int irq, void *data) } } else { dev_dbg(arizona->dev, "Mic button released\n"); - for (i = 0; i < ARIZONA_NUM_BUTTONS; i++) + for (i = 0; i < info->num_micd_ranges; i++) input_report_key(info->input, - arizona_lvl_to_key[i].report, 0); + info->micd_ranges[i].key, 0); input_sync(info->input); arizona_extcon_pulse_micbias(info); } handled: + if (info->detecting) + schedule_delayed_work(&info->micd_timeout_work, + msecs_to_jiffies(info->micd_timeout)); + pm_runtime_mark_last_busy(info->dev); mutex_unlock(&info->lock); +} + +static irqreturn_t arizona_micdet(int irq, void *data) +{ + struct arizona_extcon_info *info = data; + struct arizona *arizona = info->arizona; + int debounce = arizona->pdata.micd_detect_debounce; + + cancel_delayed_work_sync(&info->micd_detect_work); + cancel_delayed_work_sync(&info->micd_timeout_work); + + mutex_lock(&info->lock); + if (!info->detecting) + debounce = 0; + mutex_unlock(&info->lock); + + if (debounce) + schedule_delayed_work(&info->micd_detect_work, + msecs_to_jiffies(debounce)); + else + arizona_micd_detect(&info->micd_detect_work.work); return IRQ_HANDLED; } @@ -865,11 +936,13 @@ static irqreturn_t arizona_jackdet(int irq, void *data) struct arizona_extcon_info *info = data; struct arizona *arizona = info->arizona; unsigned int val, present, mask; + bool cancelled_hp, cancelled_mic; int ret, i; - pm_runtime_get_sync(info->dev); + cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work); + cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work); - cancel_delayed_work_sync(&info->hpdet_work); + pm_runtime_get_sync(info->dev); mutex_lock(&info->lock); @@ -890,7 +963,22 @@ static irqreturn_t arizona_jackdet(int irq, void *data) return IRQ_NONE; } - if ((val & mask) == present) { + val &= mask; + if (val == info->last_jackdet) { + dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n"); + if (cancelled_hp) + schedule_delayed_work(&info->hpdet_work, + msecs_to_jiffies(HPDET_DEBOUNCE)); + + if (cancelled_mic) + schedule_delayed_work(&info->micd_timeout_work, + msecs_to_jiffies(info->micd_timeout)); + + goto out; + } + info->last_jackdet = val; + + if (info->last_jackdet == present) { dev_dbg(arizona->dev, "Detected jack\n"); ret = extcon_set_cable_state_(&info->edev, ARIZONA_CABLE_MECHANICAL, true); @@ -907,7 +995,7 @@ static irqreturn_t arizona_jackdet(int irq, void *data) arizona_start_mic(info); } else { schedule_delayed_work(&info->hpdet_work, - msecs_to_jiffies(250)); + msecs_to_jiffies(HPDET_DEBOUNCE)); } regmap_update_bits(arizona->regmap, @@ -923,10 +1011,11 @@ static irqreturn_t arizona_jackdet(int irq, void *data) info->hpdet_res[i] = 0; info->mic = false; info->hpdet_done = false; + info->hpdet_retried = false; - for (i = 0; i < ARIZONA_NUM_BUTTONS; i++) + for (i = 0; i < info->num_micd_ranges; i++) input_report_key(info->input, - arizona_lvl_to_key[i].report, 0); + info->micd_ranges[i].key, 0); input_sync(info->input); ret = extcon_update_state(&info->edev, 0xffffffff, 0); @@ -940,6 +1029,11 @@ static irqreturn_t arizona_jackdet(int irq, void *data) ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB); } + if (arizona->pdata.micd_timeout) + info->micd_timeout = arizona->pdata.micd_timeout; + else + info->micd_timeout = DEFAULT_MICD_TIMEOUT; + /* Clear trig_sts to make sure DCVDD is not forced up */ regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG, ARIZONA_MICD_CLAMP_FALL_TRIG_STS | @@ -947,6 +1041,7 @@ static irqreturn_t arizona_jackdet(int irq, void *data) ARIZONA_JD1_FALL_TRIG_STS | ARIZONA_JD1_RISE_TRIG_STS); +out: mutex_unlock(&info->lock); pm_runtime_mark_last_busy(info->dev); @@ -955,13 +1050,34 @@ static irqreturn_t arizona_jackdet(int irq, void *data) return IRQ_HANDLED; } +/* Map a level onto a slot in the register bank */ +static void arizona_micd_set_level(struct arizona *arizona, int index, + unsigned int level) +{ + int reg; + unsigned int mask; + + reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2); + + if (!(index % 2)) { + mask = 0x3f00; + level <<= 8; + } else { + mask = 0x3f; + } + + /* Program the level itself */ + regmap_update_bits(arizona->regmap, reg, mask, level); +} + static int arizona_extcon_probe(struct platform_device *pdev) { struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); struct arizona_pdata *pdata; struct arizona_extcon_info *info; + unsigned int val; int jack_irq_fall, jack_irq_rise; - int ret, mode, i; + int ret, mode, i, j; if (!arizona->dapm || !arizona->dapm->card) return -EPROBE_DEFER; @@ -985,7 +1101,10 @@ static int arizona_extcon_probe(struct platform_device *pdev) mutex_init(&info->lock); info->arizona = arizona; info->dev = &pdev->dev; + info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS); INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work); + INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect); + INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work); platform_set_drvdata(pdev, info); switch (arizona->type) { @@ -1014,6 +1133,17 @@ static int arizona_extcon_probe(struct platform_device *pdev) goto err; } + info->input = devm_input_allocate_device(&pdev->dev); + if (!info->input) { + dev_err(arizona->dev, "Can't allocate input dev\n"); + ret = -ENOMEM; + goto err_register; + } + + info->input->name = "Headset"; + info->input->phys = "arizona/extcon"; + info->input->dev.parent = &pdev->dev; + if (pdata->num_micd_configs) { info->micd_modes = pdata->micd_configs; info->micd_num_modes = pdata->num_micd_configs; @@ -1069,15 +1199,79 @@ static int arizona_extcon_probe(struct platform_device *pdev) arizona->pdata.micd_dbtime << ARIZONA_MICD_DBTIME_SHIFT); + BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) != 0x40); + + if (arizona->pdata.num_micd_ranges) { + info->micd_ranges = pdata->micd_ranges; + info->num_micd_ranges = pdata->num_micd_ranges; + } else { + info->micd_ranges = micd_default_ranges; + info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges); + } + + if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) { + dev_err(arizona->dev, "Too many MICD ranges: %d\n", + arizona->pdata.num_micd_ranges); + } + + if (info->num_micd_ranges > 1) { + for (i = 1; i < info->num_micd_ranges; i++) { + if (info->micd_ranges[i - 1].max > + info->micd_ranges[i].max) { + dev_err(arizona->dev, + "MICD ranges must be sorted\n"); + ret = -EINVAL; + goto err_input; + } + } + } + + /* Disable all buttons by default */ + regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2, + ARIZONA_MICD_LVL_SEL_MASK, 0x81); + + /* Set up all the buttons the user specified */ + for (i = 0; i < info->num_micd_ranges; i++) { + for (j = 0; j < ARRAY_SIZE(arizona_micd_levels); j++) + if (arizona_micd_levels[j] >= info->micd_ranges[i].max) + break; + + if (j == ARRAY_SIZE(arizona_micd_levels)) { + dev_err(arizona->dev, "Unsupported MICD level %d\n", + info->micd_ranges[i].max); + ret = -EINVAL; + goto err_input; + } + + dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n", + arizona_micd_levels[j], i); + + arizona_micd_set_level(arizona, i, j); + input_set_capability(info->input, EV_KEY, + info->micd_ranges[i].key); + + /* Enable reporting of that range */ + regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2, + 1 << i, 1 << i); + } + + /* Set all the remaining keys to a maximum */ + for (; i < ARIZONA_MAX_MICD_RANGE; i++) + arizona_micd_set_level(arizona, i, 0x3f); + /* * If we have a clamp use it, activating in conjunction with * GPIO5 if that is connected for jack detect operation. */ if (info->micd_clamp) { if (arizona->pdata.jd_gpio5) { - /* Put the GPIO into input mode */ + /* Put the GPIO into input mode with optional pull */ + val = 0xc101; + if (arizona->pdata.jd_gpio5_nopull) + val &= ~ARIZONA_GPN_PU; + regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL, - 0xc101); + val); regmap_update_bits(arizona->regmap, ARIZONA_MICD_CLAMP_CONTROL, @@ -1096,20 +1290,6 @@ static int arizona_extcon_probe(struct platform_device *pdev) arizona_extcon_set_mode(info, 0); - info->input = devm_input_allocate_device(&pdev->dev); - if (!info->input) { - dev_err(arizona->dev, "Can't allocate input dev\n"); - ret = -ENOMEM; - goto err_register; - } - - for (i = 0; i < ARIZONA_NUM_BUTTONS; i++) - input_set_capability(info->input, EV_KEY, - arizona_lvl_to_key[i].report); - info->input->name = "Headset"; - info->input->phys = "arizona/extcon"; - info->input->dev.parent = &pdev->dev; - pm_runtime_enable(&pdev->dev); pm_runtime_idle(&pdev->dev); pm_runtime_get_sync(&pdev->dev); diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c index 8f3c947b0029..b56bdaa27d4b 100644 --- a/drivers/extcon/extcon-max77693.c +++ b/drivers/extcon/extcon-max77693.c @@ -38,7 +38,7 @@ * extcon-max77693 driver use 'default_init_data' to bring up base operation * of MAX77693 MUIC device. */ -struct max77693_reg_data default_init_data[] = { +static struct max77693_reg_data default_init_data[] = { { /* STATUS2 - [3]ChgDetRun */ .addr = MAX77693_MUIC_REG_STATUS2, @@ -258,7 +258,7 @@ static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, CONTROL3_ADCDBSET_MASK); if (ret) { dev_err(info->dev, "failed to set ADC debounce time\n"); - return -EAGAIN; + return ret; } break; default: @@ -294,7 +294,7 @@ static int max77693_muic_set_path(struct max77693_muic_info *info, MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK); if (ret < 0) { dev_err(info->dev, "failed to update MUIC register\n"); - return -EAGAIN; + return ret; } if (attached) @@ -307,7 +307,7 @@ static int max77693_muic_set_path(struct max77693_muic_info *info, CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); if (ret < 0) { dev_err(info->dev, "failed to update MUIC register\n"); - return -EAGAIN; + return ret; } dev_info(info->dev, @@ -1035,7 +1035,7 @@ static int max77693_muic_detect_accessory(struct max77693_muic_info *info) if (ret) { dev_err(info->dev, "failed to read MUIC register\n"); mutex_unlock(&info->mutex); - return -EINVAL; + return ret; } adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c index 69641bcae325..67d6738d85a0 100644 --- a/drivers/extcon/extcon-max8997.c +++ b/drivers/extcon/extcon-max8997.c @@ -196,7 +196,7 @@ static int max8997_muic_set_debounce_time(struct max8997_muic_info *info, CONTROL3_ADCDBSET_MASK); if (ret) { dev_err(info->dev, "failed to set ADC debounce time\n"); - return -EAGAIN; + return ret; } break; default: @@ -232,7 +232,7 @@ static int max8997_muic_set_path(struct max8997_muic_info *info, MAX8997_MUIC_REG_CONTROL1, ctrl1, COMP_SW_MASK); if (ret < 0) { dev_err(info->dev, "failed to update MUIC register\n"); - return -EAGAIN; + return ret; } if (attached) @@ -245,7 +245,7 @@ static int max8997_muic_set_path(struct max8997_muic_info *info, CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); if (ret < 0) { dev_err(info->dev, "failed to update MUIC register\n"); - return -EAGAIN; + return ret; } dev_info(info->dev, @@ -397,7 +397,7 @@ static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info, ret = max8997_muic_set_path(info, info->path_uart, attached); if (ret) { dev_err(info->dev, "failed to update muic register\n"); - return -EINVAL; + return ret; } extcon_set_cable_state(info->edev, "JIG", attached); @@ -608,7 +608,7 @@ static int max8997_muic_detect_dev(struct max8997_muic_info *info) if (ret) { dev_err(info->dev, "failed to read MUIC register\n"); mutex_unlock(&info->mutex); - return -EINVAL; + return ret; } adc = max8997_muic_get_cable_type(info, MAX8997_CABLE_GROUP_ADC, @@ -646,7 +646,7 @@ static void max8997_muic_detect_cable_wq(struct work_struct *work) ret = max8997_muic_detect_dev(info); if (ret < 0) - pr_err("failed to detect cable type\n"); + dev_err(info->dev, "failed to detect cable type\n"); } static int max8997_muic_probe(struct platform_device *pdev) diff --git a/drivers/hv/Makefile b/drivers/hv/Makefile index e6abfa02d8b7..0a74b5661186 100644 --- a/drivers/hv/Makefile +++ b/drivers/hv/Makefile @@ -5,4 +5,4 @@ obj-$(CONFIG_HYPERV_BALLOON) += hv_balloon.o hv_vmbus-y := vmbus_drv.o \ hv.o connection.o channel.o \ channel_mgmt.o ring_buffer.o -hv_utils-y := hv_util.o hv_kvp.o +hv_utils-y := hv_util.o hv_kvp.o hv_snapshot.o diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index ff1be167eb04..bad8128b283a 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -165,8 +165,19 @@ static void vmbus_process_rescind_offer(struct work_struct *work) struct vmbus_channel *channel = container_of(work, struct vmbus_channel, work); + unsigned long flags; + struct vmbus_channel_relid_released msg; vmbus_device_unregister(channel->device_obj); + memset(&msg, 0, sizeof(struct vmbus_channel_relid_released)); + msg.child_relid = channel->offermsg.child_relid; + msg.header.msgtype = CHANNELMSG_RELID_RELEASED; + vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released)); + + spin_lock_irqsave(&vmbus_connection.channel_lock, flags); + list_del(&channel->listentry); + spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags); + free_channel(channel); } void vmbus_free_channels(void) diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 731158910c1e..ae4923756d98 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -289,9 +289,8 @@ void hv_synic_init(void *arg) /* Check the version */ rdmsrl(HV_X64_MSR_SVERSION, version); - hv_context.event_dpc[cpu] = (struct tasklet_struct *) - kmalloc(sizeof(struct tasklet_struct), - GFP_ATOMIC); + hv_context.event_dpc[cpu] = kmalloc(sizeof(struct tasklet_struct), + GFP_ATOMIC); if (hv_context.event_dpc[cpu] == NULL) { pr_err("Unable to allocate event dpc\n"); goto cleanup; diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index 37873213e24f..4c605c70ebf9 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -117,7 +117,14 @@ union dm_caps { struct { __u64 balloon:1; __u64 hot_add:1; - __u64 reservedz:62; + /* + * To support guests that may have alignment + * limitations on hot-add, the guest can specify + * its alignment requirements; a value of n + * represents an alignment of 2^n in mega bytes. + */ + __u64 hot_add_alignment:4; + __u64 reservedz:58; } cap_bits; __u64 caps; } __packed; @@ -412,13 +419,45 @@ struct dm_info_msg { * End protocol definitions. */ -static bool hot_add; +/* + * State to manage hot adding memory into the guest. + * The range start_pfn : end_pfn specifies the range + * that the host has asked us to hot add. The range + * start_pfn : ha_end_pfn specifies the range that we have + * currently hot added. We hot add in multiples of 128M + * chunks; it is possible that we may not be able to bring + * online all the pages in the region. The range + * covered_start_pfn : covered_end_pfn defines the pages that can + * be brough online. + */ + +struct hv_hotadd_state { + struct list_head list; + unsigned long start_pfn; + unsigned long covered_start_pfn; + unsigned long covered_end_pfn; + unsigned long ha_end_pfn; + unsigned long end_pfn; +}; + +struct balloon_state { + __u32 num_pages; + struct work_struct wrk; +}; + +struct hot_add_wrk { + union dm_mem_page_range ha_page_range; + union dm_mem_page_range ha_region_range; + struct work_struct wrk; +}; + +static bool hot_add = true; static bool do_hot_add; /* * Delay reporting memory pressure by * the specified number of seconds. */ -static uint pressure_report_delay = 30; +static uint pressure_report_delay = 45; module_param(hot_add, bool, (S_IRUGO | S_IWUSR)); MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add"); @@ -446,6 +485,7 @@ enum hv_dm_state { static __u8 recv_buffer[PAGE_SIZE]; static __u8 *send_buffer; #define PAGES_IN_2M 512 +#define HA_CHUNK (32 * 1024) struct hv_dynmem_device { struct hv_device *dev; @@ -459,7 +499,28 @@ struct hv_dynmem_device { unsigned int num_pages_ballooned; /* - * This thread handles both balloon/hot-add + * State to manage the ballooning (up) operation. + */ + struct balloon_state balloon_wrk; + + /* + * State to execute the "hot-add" operation. + */ + struct hot_add_wrk ha_wrk; + + /* + * This state tracks if the host has specified a hot-add + * region. + */ + bool host_specified_ha_region; + + /* + * State to synchronize hot-add. + */ + struct completion ol_waitevent; + bool ha_waiting; + /* + * This thread handles hot-add * requests from the host as well as notifying * the host with regards to memory pressure in * the guest. @@ -467,6 +528,11 @@ struct hv_dynmem_device { struct task_struct *thread; /* + * A list of hot-add regions. + */ + struct list_head ha_region_list; + + /* * We start with the highest version we can support * and downgrade based on the host; we save here the * next version to try. @@ -476,35 +542,358 @@ struct hv_dynmem_device { static struct hv_dynmem_device dm_device; -static void hot_add_req(struct hv_dynmem_device *dm, struct dm_hot_add *msg) +#ifdef CONFIG_MEMORY_HOTPLUG + +static void hv_bring_pgs_online(unsigned long start_pfn, unsigned long size) { + int i; - struct dm_hot_add_response resp; + for (i = 0; i < size; i++) { + struct page *pg; + pg = pfn_to_page(start_pfn + i); + __online_page_set_limits(pg); + __online_page_increment_counters(pg); + __online_page_free(pg); + } +} - if (do_hot_add) { +static void hv_mem_hot_add(unsigned long start, unsigned long size, + unsigned long pfn_count, + struct hv_hotadd_state *has) +{ + int ret = 0; + int i, nid, t; + unsigned long start_pfn; + unsigned long processed_pfn; + unsigned long total_pfn = pfn_count; + + for (i = 0; i < (size/HA_CHUNK); i++) { + start_pfn = start + (i * HA_CHUNK); + has->ha_end_pfn += HA_CHUNK; + + if (total_pfn > HA_CHUNK) { + processed_pfn = HA_CHUNK; + total_pfn -= HA_CHUNK; + } else { + processed_pfn = total_pfn; + total_pfn = 0; + } + + has->covered_end_pfn += processed_pfn; + + init_completion(&dm_device.ol_waitevent); + dm_device.ha_waiting = true; + + nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn)); + ret = add_memory(nid, PFN_PHYS((start_pfn)), + (HA_CHUNK << PAGE_SHIFT)); - pr_info("Memory hot add not supported\n"); + if (ret) { + pr_info("hot_add memory failed error is %d\n", ret); + if (ret == -EEXIST) { + /* + * This error indicates that the error + * is not a transient failure. This is the + * case where the guest's physical address map + * precludes hot adding memory. Stop all further + * memory hot-add. + */ + do_hot_add = false; + } + has->ha_end_pfn -= HA_CHUNK; + has->covered_end_pfn -= processed_pfn; + break; + } /* - * Currently we do not support hot add. - * Just fail the request. + * Wait for the memory block to be onlined. */ + t = wait_for_completion_timeout(&dm_device.ol_waitevent, 5*HZ); + if (t == 0) { + pr_info("hot_add memory timedout\n"); + has->ha_end_pfn -= HA_CHUNK; + has->covered_end_pfn -= processed_pfn; + break; + } + + } + + return; +} + +static void hv_online_page(struct page *pg) +{ + struct list_head *cur; + struct hv_hotadd_state *has; + unsigned long cur_start_pgp; + unsigned long cur_end_pgp; + + if (dm_device.ha_waiting) { + dm_device.ha_waiting = false; + complete(&dm_device.ol_waitevent); + } + + list_for_each(cur, &dm_device.ha_region_list) { + has = list_entry(cur, struct hv_hotadd_state, list); + cur_start_pgp = (unsigned long) + pfn_to_page(has->covered_start_pfn); + cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn); + + if (((unsigned long)pg >= cur_start_pgp) && + ((unsigned long)pg < cur_end_pgp)) { + /* + * This frame is currently backed; online the + * page. + */ + __online_page_set_limits(pg); + __online_page_increment_counters(pg); + __online_page_free(pg); + has->covered_start_pfn++; + } + } +} + +static bool pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt) +{ + struct list_head *cur; + struct hv_hotadd_state *has; + unsigned long residual, new_inc; + + if (list_empty(&dm_device.ha_region_list)) + return false; + + list_for_each(cur, &dm_device.ha_region_list) { + has = list_entry(cur, struct hv_hotadd_state, list); + + /* + * If the pfn range we are dealing with is not in the current + * "hot add block", move on. + */ + if ((start_pfn >= has->end_pfn)) + continue; + /* + * If the current hot add-request extends beyond + * our current limit; extend it. + */ + if ((start_pfn + pfn_cnt) > has->end_pfn) { + residual = (start_pfn + pfn_cnt - has->end_pfn); + /* + * Extend the region by multiples of HA_CHUNK. + */ + new_inc = (residual / HA_CHUNK) * HA_CHUNK; + if (residual % HA_CHUNK) + new_inc += HA_CHUNK; + + has->end_pfn += new_inc; + } + + /* + * If the current start pfn is not where the covered_end + * is, update it. + */ + + if (has->covered_end_pfn != start_pfn) { + has->covered_end_pfn = start_pfn; + has->covered_start_pfn = start_pfn; + } + return true; + } + return false; +} + +static unsigned long handle_pg_range(unsigned long pg_start, + unsigned long pg_count) +{ + unsigned long start_pfn = pg_start; + unsigned long pfn_cnt = pg_count; + unsigned long size; + struct list_head *cur; + struct hv_hotadd_state *has; + unsigned long pgs_ol = 0; + unsigned long old_covered_state; + + if (list_empty(&dm_device.ha_region_list)) + return 0; + + list_for_each(cur, &dm_device.ha_region_list) { + has = list_entry(cur, struct hv_hotadd_state, list); + + /* + * If the pfn range we are dealing with is not in the current + * "hot add block", move on. + */ + if ((start_pfn >= has->end_pfn)) + continue; + + old_covered_state = has->covered_end_pfn; + + if (start_pfn < has->ha_end_pfn) { + /* + * This is the case where we are backing pages + * in an already hot added region. Bring + * these pages online first. + */ + pgs_ol = has->ha_end_pfn - start_pfn; + if (pgs_ol > pfn_cnt) + pgs_ol = pfn_cnt; + hv_bring_pgs_online(start_pfn, pgs_ol); + has->covered_end_pfn += pgs_ol; + has->covered_start_pfn += pgs_ol; + pfn_cnt -= pgs_ol; + } + + if ((has->ha_end_pfn < has->end_pfn) && (pfn_cnt > 0)) { + /* + * We have some residual hot add range + * that needs to be hot added; hot add + * it now. Hot add a multiple of + * of HA_CHUNK that fully covers the pages + * we have. + */ + size = (has->end_pfn - has->ha_end_pfn); + if (pfn_cnt <= size) { + size = ((pfn_cnt / HA_CHUNK) * HA_CHUNK); + if (pfn_cnt % HA_CHUNK) + size += HA_CHUNK; + } else { + pfn_cnt = size; + } + hv_mem_hot_add(has->ha_end_pfn, size, pfn_cnt, has); + } + /* + * If we managed to online any pages that were given to us, + * we declare success. + */ + return has->covered_end_pfn - old_covered_state; + + } + + return 0; +} + +static unsigned long process_hot_add(unsigned long pg_start, + unsigned long pfn_cnt, + unsigned long rg_start, + unsigned long rg_size) +{ + struct hv_hotadd_state *ha_region = NULL; + + if (pfn_cnt == 0) + return 0; + + if (!dm_device.host_specified_ha_region) + if (pfn_covered(pg_start, pfn_cnt)) + goto do_pg_range; + + /* + * If the host has specified a hot-add range; deal with it first. + */ + + if (rg_size != 0) { + ha_region = kzalloc(sizeof(struct hv_hotadd_state), GFP_KERNEL); + if (!ha_region) + return 0; + + INIT_LIST_HEAD(&ha_region->list); + + list_add_tail(&ha_region->list, &dm_device.ha_region_list); + ha_region->start_pfn = rg_start; + ha_region->ha_end_pfn = rg_start; + ha_region->covered_start_pfn = pg_start; + ha_region->covered_end_pfn = pg_start; + ha_region->end_pfn = rg_start + rg_size; + } + +do_pg_range: + /* + * Process the page range specified; bringing them + * online if possible. + */ + return handle_pg_range(pg_start, pfn_cnt); +} + +#endif + +static void hot_add_req(struct work_struct *dummy) +{ + struct dm_hot_add_response resp; +#ifdef CONFIG_MEMORY_HOTPLUG + unsigned long pg_start, pfn_cnt; + unsigned long rg_start, rg_sz; +#endif + struct hv_dynmem_device *dm = &dm_device; + memset(&resp, 0, sizeof(struct dm_hot_add_response)); resp.hdr.type = DM_MEM_HOT_ADD_RESPONSE; resp.hdr.size = sizeof(struct dm_hot_add_response); resp.hdr.trans_id = atomic_inc_return(&trans_id); - resp.page_count = 0; - resp.result = 0; +#ifdef CONFIG_MEMORY_HOTPLUG + pg_start = dm->ha_wrk.ha_page_range.finfo.start_page; + pfn_cnt = dm->ha_wrk.ha_page_range.finfo.page_cnt; + + rg_start = dm->ha_wrk.ha_region_range.finfo.start_page; + rg_sz = dm->ha_wrk.ha_region_range.finfo.page_cnt; + + if ((rg_start == 0) && (!dm->host_specified_ha_region)) { + unsigned long region_size; + unsigned long region_start; + + /* + * The host has not specified the hot-add region. + * Based on the hot-add page range being specified, + * compute a hot-add region that can cover the pages + * that need to be hot-added while ensuring the alignment + * and size requirements of Linux as it relates to hot-add. + */ + region_start = pg_start; + region_size = (pfn_cnt / HA_CHUNK) * HA_CHUNK; + if (pfn_cnt % HA_CHUNK) + region_size += HA_CHUNK; + + region_start = (pg_start / HA_CHUNK) * HA_CHUNK; + + rg_start = region_start; + rg_sz = region_size; + } + + if (do_hot_add) + resp.page_count = process_hot_add(pg_start, pfn_cnt, + rg_start, rg_sz); +#endif + /* + * The result field of the response structure has the + * following semantics: + * + * 1. If all or some pages hot-added: Guest should return success. + * + * 2. If no pages could be hot-added: + * + * If the guest returns success, then the host + * will not attempt any further hot-add operations. This + * signifies a permanent failure. + * + * If the guest returns failure, then this failure will be + * treated as a transient failure and the host may retry the + * hot-add operation after some delay. + */ + if (resp.page_count > 0) + resp.result = 1; + else if (!do_hot_add) + resp.result = 1; + else + resp.result = 0; + + if (!do_hot_add || (resp.page_count == 0)) + pr_info("Memory hot add failed\n"); dm->state = DM_INITIALIZED; vmbus_sendpacket(dm->dev->channel, &resp, sizeof(struct dm_hot_add_response), (unsigned long)NULL, VM_PKT_DATA_INBAND, 0); - } static void process_info(struct hv_dynmem_device *dm, struct dm_info_msg *msg) @@ -523,7 +912,7 @@ static void process_info(struct hv_dynmem_device *dm, struct dm_info_msg *msg) } } -unsigned long compute_balloon_floor(void) +static unsigned long compute_balloon_floor(void) { unsigned long min_pages; #define MB2PAGES(mb) ((mb) << (20 - PAGE_SHIFT)) @@ -644,6 +1033,14 @@ static int alloc_balloon_pages(struct hv_dynmem_device *dm, int num_pages, dm->num_pages_ballooned += alloc_unit; + /* + * If we allocatted 2M pages; split them so we + * can free them in any order we get. + */ + + if (alloc_unit != 1) + split_page(pg, get_order(alloc_unit << PAGE_SHIFT)); + bl_resp->range_count++; bl_resp->range_array[i].finfo.start_page = page_to_pfn(pg); @@ -657,9 +1054,9 @@ static int alloc_balloon_pages(struct hv_dynmem_device *dm, int num_pages, -static void balloon_up(struct hv_dynmem_device *dm, struct dm_balloon *req) +static void balloon_up(struct work_struct *dummy) { - int num_pages = req->num_pages; + int num_pages = dm_device.balloon_wrk.num_pages; int num_ballooned = 0; struct dm_balloon_response *bl_resp; int alloc_unit; @@ -670,9 +1067,10 @@ static void balloon_up(struct hv_dynmem_device *dm, struct dm_balloon *req) /* - * Currently, we only support 4k allocations. + * We will attempt 2M allocations. However, if we fail to + * allocate 2M chunks, we will go back to 4k allocations. */ - alloc_unit = 1; + alloc_unit = 512; while (!done) { bl_resp = (struct dm_balloon_response *)send_buffer; @@ -684,14 +1082,19 @@ static void balloon_up(struct hv_dynmem_device *dm, struct dm_balloon *req) num_pages -= num_ballooned; - num_ballooned = alloc_balloon_pages(dm, num_pages, + num_ballooned = alloc_balloon_pages(&dm_device, num_pages, bl_resp, alloc_unit, &alloc_error); + if ((alloc_error) && (alloc_unit != 1)) { + alloc_unit = 1; + continue; + } + if ((alloc_error) || (num_ballooned == num_pages)) { bl_resp->more_pages = 0; done = true; - dm->state = DM_INITIALIZED; + dm_device.state = DM_INITIALIZED; } /* @@ -719,7 +1122,7 @@ static void balloon_up(struct hv_dynmem_device *dm, struct dm_balloon *req) pr_info("Balloon response failed\n"); for (i = 0; i < bl_resp->range_count; i++) - free_balloon_pages(dm, + free_balloon_pages(&dm_device, &bl_resp->range_array[i]); done = true; @@ -761,7 +1164,6 @@ static int dm_thread_func(void *dm_dev) { struct hv_dynmem_device *dm = dm_dev; int t; - unsigned long scan_start; while (!kthread_should_stop()) { t = wait_for_completion_timeout(&dm_device.config_event, 1*HZ); @@ -773,22 +1175,6 @@ static int dm_thread_func(void *dm_dev) if (t == 0) post_status(dm); - scan_start = jiffies; - switch (dm->state) { - case DM_BALLOON_UP: - balloon_up(dm, (struct dm_balloon *)recv_buffer); - break; - - case DM_HOT_ADD: - hot_add_req(dm, (struct dm_hot_add *)recv_buffer); - break; - default: - break; - } - - if (!time_in_range(jiffies, scan_start, scan_start + HZ)) - post_status(dm); - } return 0; @@ -861,6 +1247,10 @@ static void balloon_onchannelcallback(void *context) struct dm_message *dm_msg; struct dm_header *dm_hdr; struct hv_dynmem_device *dm = hv_get_drvdata(dev); + struct dm_balloon *bal_msg; + struct dm_hot_add *ha_msg; + union dm_mem_page_range *ha_pg_range; + union dm_mem_page_range *ha_region; memset(recv_buffer, 0, sizeof(recv_buffer)); vmbus_recvpacket(dev->channel, recv_buffer, @@ -882,8 +1272,12 @@ static void balloon_onchannelcallback(void *context) break; case DM_BALLOON_REQUEST: + if (dm->state == DM_BALLOON_UP) + pr_warn("Currently ballooning\n"); + bal_msg = (struct dm_balloon *)recv_buffer; dm->state = DM_BALLOON_UP; - complete(&dm->config_event); + dm_device.balloon_wrk.num_pages = bal_msg->num_pages; + schedule_work(&dm_device.balloon_wrk.wrk); break; case DM_UNBALLOON_REQUEST: @@ -893,8 +1287,31 @@ static void balloon_onchannelcallback(void *context) break; case DM_MEM_HOT_ADD_REQUEST: + if (dm->state == DM_HOT_ADD) + pr_warn("Currently hot-adding\n"); dm->state = DM_HOT_ADD; - complete(&dm->config_event); + ha_msg = (struct dm_hot_add *)recv_buffer; + if (ha_msg->hdr.size == sizeof(struct dm_hot_add)) { + /* + * This is a normal hot-add request specifying + * hot-add memory. + */ + ha_pg_range = &ha_msg->range; + dm->ha_wrk.ha_page_range = *ha_pg_range; + dm->ha_wrk.ha_region_range.page_range = 0; + } else { + /* + * Host is specifying that we first hot-add + * a region and then partially populate this + * region. + */ + dm->host_specified_ha_region = true; + ha_pg_range = &ha_msg->range; + ha_region = &ha_pg_range[1]; + dm->ha_wrk.ha_page_range = *ha_pg_range; + dm->ha_wrk.ha_region_range = *ha_region; + } + schedule_work(&dm_device.ha_wrk.wrk); break; case DM_INFO_MESSAGE: @@ -937,6 +1354,10 @@ static int balloon_probe(struct hv_device *dev, dm_device.next_version = DYNMEM_PROTOCOL_VERSION_WIN7; init_completion(&dm_device.host_event); init_completion(&dm_device.config_event); + INIT_LIST_HEAD(&dm_device.ha_region_list); + INIT_WORK(&dm_device.balloon_wrk.wrk, balloon_up); + INIT_WORK(&dm_device.ha_wrk.wrk, hot_add_req); + dm_device.host_specified_ha_region = false; dm_device.thread = kthread_run(dm_thread_func, &dm_device, "hv_balloon"); @@ -945,6 +1366,10 @@ static int balloon_probe(struct hv_device *dev, goto probe_error1; } +#ifdef CONFIG_MEMORY_HOTPLUG + set_online_page_callback(&hv_online_page); +#endif + hv_set_drvdata(dev, &dm_device); /* * Initiate the hand shake with the host and negotiate @@ -962,8 +1387,7 @@ static int balloon_probe(struct hv_device *dev, ret = vmbus_sendpacket(dev->channel, &version_req, sizeof(struct dm_version_request), (unsigned long)NULL, - VM_PKT_DATA_INBAND, - VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); + VM_PKT_DATA_INBAND, 0); if (ret) goto probe_error2; @@ -990,13 +1414,13 @@ static int balloon_probe(struct hv_device *dev, cap_msg.hdr.trans_id = atomic_inc_return(&trans_id); cap_msg.caps.cap_bits.balloon = 1; + cap_msg.caps.cap_bits.hot_add = 1; + /* - * While we currently don't support hot-add, - * we still advertise this capability since the - * host requires that guests partcipating in the - * dynamic memory protocol support hot add. + * Specify our alignment requirements as it relates + * memory hot-add. Specify 128MB alignment. */ - cap_msg.caps.cap_bits.hot_add = 1; + cap_msg.caps.cap_bits.hot_add_alignment = 7; /* * Currently the host does not use these @@ -1009,8 +1433,7 @@ static int balloon_probe(struct hv_device *dev, ret = vmbus_sendpacket(dev->channel, &cap_msg, sizeof(struct dm_capabilities), (unsigned long)NULL, - VM_PKT_DATA_INBAND, - VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); + VM_PKT_DATA_INBAND, 0); if (ret) goto probe_error2; @@ -1034,6 +1457,9 @@ static int balloon_probe(struct hv_device *dev, return 0; probe_error2: +#ifdef CONFIG_MEMORY_HOTPLUG + restore_online_page_callback(&hv_online_page); +#endif kthread_stop(dm_device.thread); probe_error1: @@ -1046,13 +1472,26 @@ probe_error0: static int balloon_remove(struct hv_device *dev) { struct hv_dynmem_device *dm = hv_get_drvdata(dev); + struct list_head *cur, *tmp; + struct hv_hotadd_state *has; if (dm->num_pages_ballooned != 0) pr_warn("Ballooned pages: %d\n", dm->num_pages_ballooned); + cancel_work_sync(&dm->balloon_wrk.wrk); + cancel_work_sync(&dm->ha_wrk.wrk); + vmbus_close(dev->channel); kthread_stop(dm->thread); kfree(send_buffer); +#ifdef CONFIG_MEMORY_HOTPLUG + restore_online_page_callback(&hv_online_page); +#endif + list_for_each_safe(cur, tmp, &dm->ha_region_list) { + has = list_entry(cur, struct hv_hotadd_state, list); + list_del(&has->list); + kfree(has); + } return 0; } @@ -1079,14 +1518,7 @@ static int __init init_balloon_drv(void) return vmbus_driver_register(&balloon_drv); } -static void exit_balloon_drv(void) -{ - - vmbus_driver_unregister(&balloon_drv); -} - module_init(init_balloon_drv); -module_exit(exit_balloon_drv); MODULE_DESCRIPTION("Hyper-V Balloon"); MODULE_VERSION(HV_DRV_VERSION); diff --git a/drivers/hv/hv_snapshot.c b/drivers/hv/hv_snapshot.c new file mode 100644 index 000000000000..8ad5653ce447 --- /dev/null +++ b/drivers/hv/hv_snapshot.c @@ -0,0 +1,287 @@ +/* + * An implementation of host initiated guest snapshot. + * + * + * Copyright (C) 2013, Microsoft, Inc. + * Author : K. Y. Srinivasan <kys@microsoft.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for more + * details. + * + */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/net.h> +#include <linux/nls.h> +#include <linux/connector.h> +#include <linux/workqueue.h> +#include <linux/hyperv.h> + + + +/* + * Global state maintained for transaction that is being processed. + * Note that only one transaction can be active at any point in time. + * + * This state is set when we receive a request from the host; we + * cleanup this state when the transaction is completed - when we respond + * to the host with the key value. + */ + +static struct { + bool active; /* transaction status - active or not */ + int recv_len; /* number of bytes received. */ + struct vmbus_channel *recv_channel; /* chn we got the request */ + u64 recv_req_id; /* request ID. */ + struct hv_vss_msg *msg; /* current message */ +} vss_transaction; + + +static void vss_respond_to_host(int error); + +static struct cb_id vss_id = { CN_VSS_IDX, CN_VSS_VAL }; +static const char vss_name[] = "vss_kernel_module"; +static __u8 *recv_buffer; + +static void vss_send_op(struct work_struct *dummy); +static DECLARE_WORK(vss_send_op_work, vss_send_op); + +/* + * Callback when data is received from user mode. + */ + +static void +vss_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp) +{ + struct hv_vss_msg *vss_msg; + + vss_msg = (struct hv_vss_msg *)msg->data; + + if (vss_msg->vss_hdr.operation == VSS_OP_REGISTER) { + pr_info("VSS daemon registered\n"); + vss_transaction.active = false; + if (vss_transaction.recv_channel != NULL) + hv_vss_onchannelcallback(vss_transaction.recv_channel); + return; + + } + vss_respond_to_host(vss_msg->error); +} + + +static void vss_send_op(struct work_struct *dummy) +{ + int op = vss_transaction.msg->vss_hdr.operation; + struct cn_msg *msg; + struct hv_vss_msg *vss_msg; + + msg = kzalloc(sizeof(*msg) + sizeof(*vss_msg), GFP_ATOMIC); + if (!msg) + return; + + vss_msg = (struct hv_vss_msg *)msg->data; + + msg->id.idx = CN_VSS_IDX; + msg->id.val = CN_VSS_VAL; + + vss_msg->vss_hdr.operation = op; + msg->len = sizeof(struct hv_vss_msg); + + cn_netlink_send(msg, 0, GFP_ATOMIC); + kfree(msg); + + return; +} + +/* + * Send a response back to the host. + */ + +static void +vss_respond_to_host(int error) +{ + struct icmsg_hdr *icmsghdrp; + u32 buf_len; + struct vmbus_channel *channel; + u64 req_id; + + /* + * If a transaction is not active; log and return. + */ + + if (!vss_transaction.active) { + /* + * This is a spurious call! + */ + pr_warn("VSS: Transaction not active\n"); + return; + } + /* + * Copy the global state for completing the transaction. Note that + * only one transaction can be active at a time. + */ + + buf_len = vss_transaction.recv_len; + channel = vss_transaction.recv_channel; + req_id = vss_transaction.recv_req_id; + vss_transaction.active = false; + + icmsghdrp = (struct icmsg_hdr *) + &recv_buffer[sizeof(struct vmbuspipe_hdr)]; + + if (channel->onchannel_callback == NULL) + /* + * We have raced with util driver being unloaded; + * silently return. + */ + return; + + icmsghdrp->status = error; + + icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION | ICMSGHDRFLAG_RESPONSE; + + vmbus_sendpacket(channel, recv_buffer, buf_len, req_id, + VM_PKT_DATA_INBAND, 0); + +} + +/* + * This callback is invoked when we get a VSS message from the host. + * The host ensures that only one VSS transaction can be active at a time. + */ + +void hv_vss_onchannelcallback(void *context) +{ + struct vmbus_channel *channel = context; + u32 recvlen; + u64 requestid; + struct hv_vss_msg *vss_msg; + + + struct icmsg_hdr *icmsghdrp; + struct icmsg_negotiate *negop = NULL; + + if (vss_transaction.active) { + /* + * We will defer processing this callback once + * the current transaction is complete. + */ + vss_transaction.recv_channel = channel; + return; + } + + vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 2, &recvlen, + &requestid); + + if (recvlen > 0) { + icmsghdrp = (struct icmsg_hdr *)&recv_buffer[ + sizeof(struct vmbuspipe_hdr)]; + + if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { + vmbus_prep_negotiate_resp(icmsghdrp, negop, + recv_buffer, MAX_SRV_VER, MAX_SRV_VER); + /* + * We currently negotiate the highest number the + * host has presented. If this version is not + * atleast 5.0, reject. + */ + negop = (struct icmsg_negotiate *)&recv_buffer[ + sizeof(struct vmbuspipe_hdr) + + sizeof(struct icmsg_hdr)]; + + if (negop->icversion_data[1].major < 5) + negop->icframe_vercnt = 0; + } else { + vss_msg = (struct hv_vss_msg *)&recv_buffer[ + sizeof(struct vmbuspipe_hdr) + + sizeof(struct icmsg_hdr)]; + + /* + * Stash away this global state for completing the + * transaction; note transactions are serialized. + */ + + vss_transaction.recv_len = recvlen; + vss_transaction.recv_channel = channel; + vss_transaction.recv_req_id = requestid; + vss_transaction.active = true; + vss_transaction.msg = (struct hv_vss_msg *)vss_msg; + + switch (vss_msg->vss_hdr.operation) { + /* + * Initiate a "freeze/thaw" + * operation in the guest. + * We respond to the host once + * the operation is complete. + * + * We send the message to the + * user space daemon and the + * operation is performed in + * the daemon. + */ + case VSS_OP_FREEZE: + case VSS_OP_THAW: + schedule_work(&vss_send_op_work); + return; + + case VSS_OP_HOT_BACKUP: + vss_msg->vss_cf.flags = + VSS_HBU_NO_AUTO_RECOVERY; + vss_respond_to_host(0); + return; + + case VSS_OP_GET_DM_INFO: + vss_msg->dm_info.flags = 0; + vss_respond_to_host(0); + return; + + default: + vss_respond_to_host(0); + return; + + } + + } + + icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION + | ICMSGHDRFLAG_RESPONSE; + + vmbus_sendpacket(channel, recv_buffer, + recvlen, requestid, + VM_PKT_DATA_INBAND, 0); + } + +} + +int +hv_vss_init(struct hv_util_service *srv) +{ + int err; + + err = cn_add_callback(&vss_id, vss_name, vss_cn_callback); + if (err) + return err; + recv_buffer = srv->recv_buffer; + + /* + * When this driver loads, the user level daemon that + * processes the host requests may not yet be running. + * Defer processing channel callbacks until the daemon + * has registered. + */ + vss_transaction.active = true; + return 0; +} + +void hv_vss_deinit(void) +{ + cn_del_callback(&vss_id); + cancel_work_sync(&vss_send_op_work); +} diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index 1d4cbd8e8261..2f561c5dfe24 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -49,6 +49,12 @@ static struct hv_util_service util_kvp = { .util_deinit = hv_kvp_deinit, }; +static struct hv_util_service util_vss = { + .util_cb = hv_vss_onchannelcallback, + .util_init = hv_vss_init, + .util_deinit = hv_vss_deinit, +}; + static void perform_shutdown(struct work_struct *dummy) { orderly_poweroff(true); @@ -339,6 +345,10 @@ static const struct hv_vmbus_device_id id_table[] = { { HV_KVP_GUID, .driver_data = (unsigned long)&util_kvp }, + /* VSS GUID */ + { HV_VSS_GUID, + .driver_data = (unsigned long)&util_vss + }, { }, }; diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index cafa72ffdc30..d6fbb5772b8d 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -71,6 +71,7 @@ u32 hv_end_read(struct hv_ring_buffer_info *rbi) static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi) { + smp_mb(); if (rbi->ring_buffer->interrupt_mask) return false; diff --git a/drivers/ipack/carriers/tpci200.c b/drivers/ipack/carriers/tpci200.c index 0246b1fddffe..c276fde318e5 100644 --- a/drivers/ipack/carriers/tpci200.c +++ b/drivers/ipack/carriers/tpci200.c @@ -480,6 +480,7 @@ static void tpci200_release_device(struct ipack_device *dev) static int tpci200_create_device(struct tpci200_board *tpci200, int i) { + int ret; enum ipack_space space; struct ipack_device *dev = kzalloc(sizeof(struct ipack_device), GFP_KERNEL); @@ -495,7 +496,18 @@ static int tpci200_create_device(struct tpci200_board *tpci200, int i) + tpci200_space_interval[space] * i; dev->region[space].size = tpci200_space_size[space]; } - return ipack_device_register(dev); + + ret = ipack_device_init(dev); + if (ret < 0) { + ipack_put_device(dev); + return ret; + } + + ret = ipack_device_add(dev); + if (ret < 0) + ipack_put_device(dev); + + return ret; } static int tpci200_pci_probe(struct pci_dev *pdev, diff --git a/drivers/ipack/ipack.c b/drivers/ipack/ipack.c index 7ec6b208b1cb..6e066c53acce 100644 --- a/drivers/ipack/ipack.c +++ b/drivers/ipack/ipack.c @@ -227,7 +227,7 @@ static int ipack_unregister_bus_member(struct device *dev, void *data) struct ipack_bus_device *bus = data; if (idev->bus == bus) - ipack_device_unregister(idev); + ipack_device_del(idev); return 1; } @@ -419,7 +419,7 @@ out: return ret; } -int ipack_device_register(struct ipack_device *dev) +int ipack_device_init(struct ipack_device *dev) { int ret; @@ -428,6 +428,7 @@ int ipack_device_register(struct ipack_device *dev) dev->dev.parent = dev->bus->parent; dev_set_name(&dev->dev, "ipack-dev.%u.%u", dev->bus->bus_nr, dev->slot); + device_initialize(&dev->dev); if (dev->bus->ops->set_clockrate(dev, 8)) dev_warn(&dev->dev, "failed to switch to 8 MHz operation for reading of device ID.\n"); @@ -447,19 +448,34 @@ int ipack_device_register(struct ipack_device *dev) dev_err(&dev->dev, "failed to switch to 32 MHz operation.\n"); } - ret = device_register(&dev->dev); - if (ret < 0) - kfree(dev->id); + return 0; +} +EXPORT_SYMBOL_GPL(ipack_device_init); - return ret; +int ipack_device_add(struct ipack_device *dev) +{ + return device_add(&dev->dev); +} +EXPORT_SYMBOL_GPL(ipack_device_add); + +void ipack_device_del(struct ipack_device *dev) +{ + device_del(&dev->dev); + ipack_put_device(dev); +} +EXPORT_SYMBOL_GPL(ipack_device_del); + +void ipack_get_device(struct ipack_device *dev) +{ + get_device(&dev->dev); } -EXPORT_SYMBOL_GPL(ipack_device_register); +EXPORT_SYMBOL_GPL(ipack_get_device); -void ipack_device_unregister(struct ipack_device *dev) +void ipack_put_device(struct ipack_device *dev) { - device_unregister(&dev->dev); + put_device(&dev->dev); } -EXPORT_SYMBOL_GPL(ipack_device_unregister); +EXPORT_SYMBOL_GPL(ipack_put_device); static int __init ipack_init(void) { diff --git a/drivers/isdn/hardware/avm/avm_cs.c b/drivers/isdn/hardware/avm/avm_cs.c index c21353d8e915..62b8030ee331 100644 --- a/drivers/isdn/hardware/avm/avm_cs.c +++ b/drivers/isdn/hardware/avm/avm_cs.c @@ -163,16 +163,4 @@ static struct pcmcia_driver avmcs_driver = { .remove = avmcs_detach, .id_table = avmcs_ids, }; - -static int __init avmcs_init(void) -{ - return pcmcia_register_driver(&avmcs_driver); -} - -static void __exit avmcs_exit(void) -{ - pcmcia_unregister_driver(&avmcs_driver); -} - -module_init(avmcs_init); -module_exit(avmcs_exit); +module_pcmcia_driver(avmcs_driver); diff --git a/drivers/isdn/hisax/avma1_cs.c b/drivers/isdn/hisax/avma1_cs.c index 4e676bcf8506..baad94ec1f4a 100644 --- a/drivers/isdn/hisax/avma1_cs.c +++ b/drivers/isdn/hisax/avma1_cs.c @@ -159,16 +159,4 @@ static struct pcmcia_driver avma1cs_driver = { .remove = avma1cs_detach, .id_table = avma1cs_ids, }; - -static int __init init_avma1_cs(void) -{ - return pcmcia_register_driver(&avma1cs_driver); -} - -static void __exit exit_avma1_cs(void) -{ - pcmcia_unregister_driver(&avma1cs_driver); -} - -module_init(init_avma1_cs); -module_exit(exit_avma1_cs); +module_pcmcia_driver(avma1cs_driver); diff --git a/drivers/isdn/hisax/elsa_cs.c b/drivers/isdn/hisax/elsa_cs.c index ebe56918f6fc..40f6fad79de3 100644 --- a/drivers/isdn/hisax/elsa_cs.c +++ b/drivers/isdn/hisax/elsa_cs.c @@ -215,16 +215,4 @@ static struct pcmcia_driver elsa_cs_driver = { .suspend = elsa_suspend, .resume = elsa_resume, }; - -static int __init init_elsa_cs(void) -{ - return pcmcia_register_driver(&elsa_cs_driver); -} - -static void __exit exit_elsa_cs(void) -{ - pcmcia_unregister_driver(&elsa_cs_driver); -} - -module_init(init_elsa_cs); -module_exit(exit_elsa_cs); +module_pcmcia_driver(elsa_cs_driver); diff --git a/drivers/isdn/hisax/sedlbauer_cs.c b/drivers/isdn/hisax/sedlbauer_cs.c index 90f81291641b..92ef62d4caf4 100644 --- a/drivers/isdn/hisax/sedlbauer_cs.c +++ b/drivers/isdn/hisax/sedlbauer_cs.c @@ -206,16 +206,4 @@ static struct pcmcia_driver sedlbauer_driver = { .suspend = sedlbauer_suspend, .resume = sedlbauer_resume, }; - -static int __init init_sedlbauer_cs(void) -{ - return pcmcia_register_driver(&sedlbauer_driver); -} - -static void __exit exit_sedlbauer_cs(void) -{ - pcmcia_unregister_driver(&sedlbauer_driver); -} - -module_init(init_sedlbauer_cs); -module_exit(exit_sedlbauer_cs); +module_pcmcia_driver(sedlbauer_driver); diff --git a/drivers/isdn/hisax/teles_cs.c b/drivers/isdn/hisax/teles_cs.c index f2476ffb04fd..b8dd14958757 100644 --- a/drivers/isdn/hisax/teles_cs.c +++ b/drivers/isdn/hisax/teles_cs.c @@ -197,16 +197,4 @@ static struct pcmcia_driver teles_cs_driver = { .suspend = teles_suspend, .resume = teles_resume, }; - -static int __init init_teles_cs(void) -{ - return pcmcia_register_driver(&teles_cs_driver); -} - -static void __exit exit_teles_cs(void) -{ - pcmcia_unregister_driver(&teles_cs_driver); -} - -module_init(init_teles_cs); -module_exit(exit_teles_cs); +module_pcmcia_driver(teles_cs_driver); diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c index df0873694858..cadf1cc19aaf 100644 --- a/drivers/memory/emif.c +++ b/drivers/memory/emif.c @@ -25,6 +25,7 @@ #include <linux/module.h> #include <linux/list.h> #include <linux/spinlock.h> +#include <linux/pm.h> #include <memory/jedec_ddr.h> #include "emif.h" #include "of_memory.h" @@ -256,6 +257,41 @@ static void set_lpmode(struct emif_data *emif, u8 lpmode) u32 temp; void __iomem *base = emif->base; + /* + * Workaround for errata i743 - LPDDR2 Power-Down State is Not + * Efficient + * + * i743 DESCRIPTION: + * The EMIF supports power-down state for low power. The EMIF + * automatically puts the SDRAM into power-down after the memory is + * not accessed for a defined number of cycles and the + * EMIF_PWR_MGMT_CTRL[10:8] REG_LP_MODE bit field is set to 0x4. + * As the EMIF supports automatic output impedance calibration, a ZQ + * calibration long command is issued every time it exits active + * power-down and precharge power-down modes. The EMIF waits and + * blocks any other command during this calibration. + * The EMIF does not allow selective disabling of ZQ calibration upon + * exit of power-down mode. Due to very short periods of power-down + * cycles, ZQ calibration overhead creates bandwidth issues and + * increases overall system power consumption. On the other hand, + * issuing ZQ calibration long commands when exiting self-refresh is + * still required. + * + * WORKAROUND + * Because there is no power consumption benefit of the power-down due + * to the calibration and there is a performance risk, the guideline + * is to not allow power-down state and, therefore, to not have set + * the EMIF_PWR_MGMT_CTRL[10:8] REG_LP_MODE bit field to 0x4. + */ + if ((emif->plat_data->ip_rev == EMIF_4D) && + (EMIF_LP_MODE_PWR_DN == lpmode)) { + WARN_ONCE(1, + "REG_LP_MODE = LP_MODE_PWR_DN(4) is prohibited by" + "erratum i743 switch to LP_MODE_SELF_REFRESH(2)\n"); + /* rollback LP_MODE to Self-refresh mode */ + lpmode = EMIF_LP_MODE_SELF_REFRESH; + } + temp = readl(base + EMIF_POWER_MANAGEMENT_CONTROL); temp &= ~LP_MODE_MASK; temp |= (lpmode << LP_MODE_SHIFT); @@ -715,6 +751,8 @@ static u32 get_pwr_mgmt_ctrl(u32 freq, struct emif_data *emif, u32 ip_rev) u32 timeout_perf = EMIF_LP_MODE_TIMEOUT_PERFORMANCE; u32 timeout_pwr = EMIF_LP_MODE_TIMEOUT_POWER; u32 freq_threshold = EMIF_LP_MODE_FREQ_THRESHOLD; + u32 mask; + u8 shift; struct emif_custom_configs *cust_cfgs = emif->plat_data->custom_configs; @@ -728,37 +766,59 @@ static u32 get_pwr_mgmt_ctrl(u32 freq, struct emif_data *emif, u32 ip_rev) /* Timeout based on DDR frequency */ timeout = freq >= freq_threshold ? timeout_perf : timeout_pwr; - /* The value to be set in register is "log2(timeout) - 3" */ + /* + * The value to be set in register is "log2(timeout) - 3" + * if timeout < 16 load 0 in register + * if timeout is not a power of 2, round to next highest power of 2 + */ if (timeout < 16) { timeout = 0; } else { - timeout = __fls(timeout) - 3; if (timeout & (timeout - 1)) - timeout++; + timeout <<= 1; + timeout = __fls(timeout) - 3; } switch (lpmode) { case EMIF_LP_MODE_CLOCK_STOP: - pwr_mgmt_ctrl = (timeout << CS_TIM_SHIFT) | - SR_TIM_MASK | PD_TIM_MASK; + shift = CS_TIM_SHIFT; + mask = CS_TIM_MASK; break; case EMIF_LP_MODE_SELF_REFRESH: /* Workaround for errata i735 */ if (timeout < 6) timeout = 6; - pwr_mgmt_ctrl = (timeout << SR_TIM_SHIFT) | - CS_TIM_MASK | PD_TIM_MASK; + shift = SR_TIM_SHIFT; + mask = SR_TIM_MASK; break; case EMIF_LP_MODE_PWR_DN: - pwr_mgmt_ctrl = (timeout << PD_TIM_SHIFT) | - CS_TIM_MASK | SR_TIM_MASK; + shift = PD_TIM_SHIFT; + mask = PD_TIM_MASK; break; case EMIF_LP_MODE_DISABLE: default: - pwr_mgmt_ctrl = CS_TIM_MASK | - PD_TIM_MASK | SR_TIM_MASK; + mask = 0; + shift = 0; + break; } + /* Round to maximum in case of overflow, BUT warn! */ + if (lpmode != EMIF_LP_MODE_DISABLE && timeout > mask >> shift) { + pr_err("TIMEOUT Overflow - lpmode=%d perf=%d pwr=%d freq=%d\n", + lpmode, + timeout_perf, + timeout_pwr, + freq_threshold); + WARN(1, "timeout=0x%02x greater than 0x%02x. Using max\n", + timeout, mask >> shift); + timeout = mask >> shift; + } + + /* Setup required timing */ + pwr_mgmt_ctrl = (timeout << shift) & mask; + /* setup a default mask for rest of the modes */ + pwr_mgmt_ctrl |= (SR_TIM_MASK | CS_TIM_MASK | PD_TIM_MASK) & + ~mask; /* No CS_TIM in EMIF_4D5 */ if (ip_rev == EMIF_4D5) @@ -815,6 +875,8 @@ static void setup_registers(struct emif_data *emif, struct emif_regs *regs) writel(regs->sdram_tim2_shdw, base + EMIF_SDRAM_TIMING_2_SHDW); writel(regs->phy_ctrl_1_shdw, base + EMIF_DDR_PHY_CTRL_1_SHDW); + writel(regs->pwr_mgmt_ctrl_shdw, + base + EMIF_POWER_MANAGEMENT_CTRL_SHDW); /* Settings specific for EMIF4D5 */ if (emif->plat_data->ip_rev != EMIF_4D5) @@ -892,6 +954,7 @@ static irqreturn_t handle_temp_alert(void __iomem *base, struct emif_data *emif) { u32 old_temp_level; irqreturn_t ret = IRQ_HANDLED; + struct emif_custom_configs *custom_configs; spin_lock_irqsave(&emif_lock, irq_state); old_temp_level = emif->temperature_level; @@ -904,6 +967,29 @@ static irqreturn_t handle_temp_alert(void __iomem *base, struct emif_data *emif) goto out; } + custom_configs = emif->plat_data->custom_configs; + + /* + * IF we detect higher than "nominal rating" from DDR sensor + * on an unsupported DDR part, shutdown system + */ + if (custom_configs && !(custom_configs->mask & + EMIF_CUSTOM_CONFIG_EXTENDED_TEMP_PART)) { + if (emif->temperature_level >= SDRAM_TEMP_HIGH_DERATE_REFRESH) { + dev_err(emif->dev, + "%s:NOT Extended temperature capable memory." + "Converting MR4=0x%02x as shutdown event\n", + __func__, emif->temperature_level); + /* + * Temperature far too high - do kernel_power_off() + * from thread context + */ + emif->temperature_level = SDRAM_TEMP_VERY_HIGH_SHUTDOWN; + ret = IRQ_WAKE_THREAD; + goto out; + } + } + if (emif->temperature_level < old_temp_level || emif->temperature_level == SDRAM_TEMP_VERY_HIGH_SHUTDOWN) { /* @@ -965,7 +1051,14 @@ static irqreturn_t emif_threaded_isr(int irq, void *dev_id) if (emif->temperature_level == SDRAM_TEMP_VERY_HIGH_SHUTDOWN) { dev_emerg(emif->dev, "SDRAM temperature exceeds operating limit.. Needs shut down!!!\n"); - kernel_power_off(); + + /* If we have Power OFF ability, use it, else try restarting */ + if (pm_power_off) { + kernel_power_off(); + } else { + WARN(1, "FIXME: NO pm_power_off!!! trying restart\n"); + kernel_restart("SDRAM Over-temp Emergency restart"); + } return IRQ_HANDLED; } @@ -1170,7 +1263,7 @@ static void __init_or_module of_get_custom_configs(struct device_node *np_emif, { struct emif_custom_configs *cust_cfgs = NULL; int len; - const int *lpmode, *poll_intvl; + const __be32 *lpmode, *poll_intvl; lpmode = of_get_property(np_emif, "low-power-mode", &len); poll_intvl = of_get_property(np_emif, "temp-alert-poll-interval", &len); @@ -1184,7 +1277,7 @@ static void __init_or_module of_get_custom_configs(struct device_node *np_emif, if (lpmode) { cust_cfgs->mask |= EMIF_CUSTOM_CONFIG_LPMODE; - cust_cfgs->lpmode = *lpmode; + cust_cfgs->lpmode = be32_to_cpup(lpmode); of_property_read_u32(np_emif, "low-power-mode-timeout-performance", &cust_cfgs->lpmode_timeout_performance); @@ -1199,9 +1292,13 @@ static void __init_or_module of_get_custom_configs(struct device_node *np_emif, if (poll_intvl) { cust_cfgs->mask |= EMIF_CUSTOM_CONFIG_TEMP_ALERT_POLL_INTERVAL; - cust_cfgs->temp_alert_poll_interval_ms = *poll_intvl; + cust_cfgs->temp_alert_poll_interval_ms = + be32_to_cpup(poll_intvl); } + if (of_find_property(np_emif, "extended-temp-part", &len)) + cust_cfgs->mask |= EMIF_CUSTOM_CONFIG_EXTENDED_TEMP_PART; + if (!is_custom_config_valid(cust_cfgs, emif->dev)) { devm_kfree(emif->dev, cust_cfgs); return; @@ -1407,7 +1504,7 @@ static struct emif_data *__init_or_module get_device_details( if (pd->timings) { temp = devm_kzalloc(dev, size, GFP_KERNEL); if (temp) { - memcpy(temp, pd->timings, sizeof(*pd->timings)); + memcpy(temp, pd->timings, size); pd->timings = temp; } else { dev_warn(dev, "%s:%d: allocation error\n", __func__, @@ -1841,18 +1938,8 @@ static struct platform_driver emif_driver = { }, }; -static int __init_or_module emif_register(void) -{ - return platform_driver_probe(&emif_driver, emif_probe); -} - -static void __exit emif_unregister(void) -{ - platform_driver_unregister(&emif_driver); -} +module_platform_driver_probe(emif_driver, emif_probe); -module_init(emif_register); -module_exit(emif_unregister); MODULE_DESCRIPTION("TI EMIF SDRAM Controller Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:emif"); diff --git a/drivers/memory/tegra30-mc.c b/drivers/memory/tegra30-mc.c index 0b975986777d..f4ae074badc3 100644 --- a/drivers/memory/tegra30-mc.c +++ b/drivers/memory/tegra30-mc.c @@ -268,6 +268,7 @@ static const u32 tegra30_mc_ctx[] = { MC_INTMASK, }; +#ifdef CONFIG_PM static int tegra30_mc_suspend(struct device *dev) { int i; @@ -291,6 +292,7 @@ static int tegra30_mc_resume(struct device *dev) mc_readl(mc, MC_TIMING_CONTROL); return 0; } +#endif static UNIVERSAL_DEV_PM_OPS(tegra30_mc_pm, tegra30_mc_suspend, diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index c346941a2515..ca86581d02ce 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -991,7 +991,7 @@ config MFD_PM8XXX config MFD_PM8921_CORE tristate "Qualcomm PM8921 PMIC chip" - depends on MSM_SSBI + depends on SSBI && BROKEN select MFD_CORE select MFD_PM8XXX help diff --git a/drivers/mfd/pm8921-core.c b/drivers/mfd/pm8921-core.c index d4b297cbd801..ecc137ffa8c3 100644 --- a/drivers/mfd/pm8921-core.c +++ b/drivers/mfd/pm8921-core.c @@ -17,7 +17,7 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/err.h> -#include <linux/msm_ssbi.h> +#include <linux/ssbi.h> #include <linux/mfd/core.h> #include <linux/mfd/pm8xxx/pm8921.h> #include <linux/mfd/pm8xxx/core.h> @@ -35,7 +35,7 @@ static int pm8921_readb(const struct device *dev, u16 addr, u8 *val) const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - return msm_ssbi_read(pmic->dev->parent, addr, val, 1); + return ssbi_read(pmic->dev->parent, addr, val, 1); } static int pm8921_writeb(const struct device *dev, u16 addr, u8 val) @@ -43,7 +43,7 @@ static int pm8921_writeb(const struct device *dev, u16 addr, u8 val) const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - return msm_ssbi_write(pmic->dev->parent, addr, &val, 1); + return ssbi_write(pmic->dev->parent, addr, &val, 1); } static int pm8921_read_buf(const struct device *dev, u16 addr, u8 *buf, @@ -52,7 +52,7 @@ static int pm8921_read_buf(const struct device *dev, u16 addr, u8 *buf, const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - return msm_ssbi_read(pmic->dev->parent, addr, buf, cnt); + return ssbi_read(pmic->dev->parent, addr, buf, cnt); } static int pm8921_write_buf(const struct device *dev, u16 addr, u8 *buf, @@ -61,7 +61,7 @@ static int pm8921_write_buf(const struct device *dev, u16 addr, u8 *buf, const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - return msm_ssbi_write(pmic->dev->parent, addr, buf, cnt); + return ssbi_write(pmic->dev->parent, addr, buf, cnt); } static int pm8921_read_irq_stat(const struct device *dev, int irq) @@ -124,7 +124,7 @@ static int pm8921_probe(struct platform_device *pdev) } /* Read PMIC chip revision */ - rc = msm_ssbi_read(pdev->dev.parent, REG_HWREV, &val, sizeof(val)); + rc = ssbi_read(pdev->dev.parent, REG_HWREV, &val, sizeof(val)); if (rc) { pr_err("Failed to read hw rev reg %d:rc=%d\n", REG_HWREV, rc); goto err_read_rev; @@ -133,7 +133,7 @@ static int pm8921_probe(struct platform_device *pdev) rev = val; /* Read PMIC chip revision 2 */ - rc = msm_ssbi_read(pdev->dev.parent, REG_HWREV_2, &val, sizeof(val)); + rc = ssbi_read(pdev->dev.parent, REG_HWREV_2, &val, sizeof(val)); if (rc) { pr_err("Failed to read hw rev 2 reg %d:rc=%d\n", REG_HWREV_2, rc); diff --git a/drivers/mfd/wm5102-tables.c b/drivers/mfd/wm5102-tables.c index a433f580aa4c..ca2aed6bc830 100644 --- a/drivers/mfd/wm5102-tables.c +++ b/drivers/mfd/wm5102-tables.c @@ -331,6 +331,10 @@ static const struct reg_default wm5102_reg_default[] = { { 0x000002A3, 0x1102 }, /* R675 - Mic Detect 1 */ { 0x000002A4, 0x009F }, /* R676 - Mic Detect 2 */ { 0x000002A5, 0x0000 }, /* R677 - Mic Detect 3 */ + { 0x000002A6, 0x3737 }, /* R678 - Mic Detect Level 1 */ + { 0x000002A7, 0x372C }, /* R679 - Mic Detect Level 2 */ + { 0x000002A8, 0x1422 }, /* R680 - Mic Detect Level 3 */ + { 0x000002A9, 0x030A }, /* R681 - Mic Detect Level 4 */ { 0x000002C3, 0x0000 }, /* R707 - Mic noise mix control 1 */ { 0x000002CB, 0x0000 }, /* R715 - Isolation control */ { 0x000002D3, 0x0000 }, /* R723 - Jack detect analogue */ @@ -1090,6 +1094,10 @@ static bool wm5102_readable_register(struct device *dev, unsigned int reg) case ARIZONA_MIC_DETECT_1: case ARIZONA_MIC_DETECT_2: case ARIZONA_MIC_DETECT_3: + case ARIZONA_MIC_DETECT_LEVEL_1: + case ARIZONA_MIC_DETECT_LEVEL_2: + case ARIZONA_MIC_DETECT_LEVEL_3: + case ARIZONA_MIC_DETECT_LEVEL_4: case ARIZONA_MIC_NOISE_MIX_CONTROL_1: case ARIZONA_ISOLATION_CONTROL: case ARIZONA_JACK_DETECT_ANALOGUE: diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index e83fdfe0c8ca..e29e7980a359 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -93,6 +93,14 @@ config ATMEL_TCB_CLKSRC_BLOCK TC can be used for other purposes, such as PWM generation and interval timing. +config DUMMY_IRQ + tristate "Dummy IRQ handler" + default n + ---help--- + This module accepts a single 'irq' parameter, which it should register for. + The sole purpose of this module is to help with debugging of systems on + which spurious IRQs would happen on disabled IRQ vector. + config IBM_ASM tristate "Device driver for IBM RSA service processor" depends on X86 && PCI && INPUT @@ -398,7 +406,7 @@ config DS1682 config SPEAR13XX_PCIE_GADGET bool "PCIe gadget support for SPEAr13XX platform" - depends on ARCH_SPEAR13XX + depends on ARCH_SPEAR13XX && BROKEN default n help This option enables gadget support for PCIe controller. If diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 35a1463c72d9..865cbc6a7ae1 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o obj-$(CONFIG_BMP085) += bmp085.o obj-$(CONFIG_BMP085_I2C) += bmp085-i2c.o obj-$(CONFIG_BMP085_SPI) += bmp085-spi.o +obj-$(CONFIG_DUMMY_IRQ) += dummy-irq.o obj-$(CONFIG_ICS932S401) += ics932s401.o obj-$(CONFIG_LKDTM) += lkdtm.o obj-$(CONFIG_TIFM_CORE) += tifm_core.o @@ -49,6 +50,5 @@ obj-y += carma/ obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/ obj-$(CONFIG_INTEL_MEI) += mei/ -obj-$(CONFIG_MAX8997_MUIC) += max8997-muic.o obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/ obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o diff --git a/drivers/misc/apds9802als.c b/drivers/misc/apds9802als.c index d648b0893027..5b5fd8416b3e 100644 --- a/drivers/misc/apds9802als.c +++ b/drivers/misc/apds9802als.c @@ -272,19 +272,8 @@ static int apds9802als_remove(struct i2c_client *client) } #ifdef CONFIG_PM -static int apds9802als_suspend(struct i2c_client *client, pm_message_t mesg) -{ - als_set_power_state(client, false); - return 0; -} - -static int apds9802als_resume(struct i2c_client *client) -{ - als_set_default_config(client); - return 0; -} -static int apds9802als_runtime_suspend(struct device *dev) +static int apds9802als_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); @@ -292,7 +281,7 @@ static int apds9802als_runtime_suspend(struct device *dev) return 0; } -static int apds9802als_runtime_resume(struct device *dev) +static int apds9802als_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); @@ -300,16 +289,12 @@ static int apds9802als_runtime_resume(struct device *dev) return 0; } -static const struct dev_pm_ops apds9802als_pm_ops = { - .runtime_suspend = apds9802als_runtime_suspend, - .runtime_resume = apds9802als_runtime_resume, -}; +static UNIVERSAL_DEV_PM_OPS(apds9802als_pm_ops, apds9802als_suspend, + apds9802als_resume, NULL); #define APDS9802ALS_PM_OPS (&apds9802als_pm_ops) #else /* CONFIG_PM */ -#define apds9802als_suspend NULL -#define apds9802als_resume NULL #define APDS9802ALS_PM_OPS NULL #endif /* CONFIG_PM */ @@ -327,8 +312,6 @@ static struct i2c_driver apds9802als_driver = { }, .probe = apds9802als_probe, .remove = apds9802als_remove, - .suspend = apds9802als_suspend, - .resume = apds9802als_resume, .id_table = apds9802als_id, }; diff --git a/drivers/misc/apds990x.c b/drivers/misc/apds990x.c index 0e67f8263cd8..98f9bb26492a 100644 --- a/drivers/misc/apds990x.c +++ b/drivers/misc/apds990x.c @@ -700,9 +700,6 @@ static ssize_t apds990x_lux_calib_store(struct device *dev, if (strict_strtoul(buf, 0, &value)) return -EINVAL; - if (chip->lux_calib > APDS_RANGE) - return -EINVAL; - chip->lux_calib = value; return len; @@ -1204,7 +1201,7 @@ static int apds990x_remove(struct i2c_client *client) return 0; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int apds990x_suspend(struct device *dev) { struct i2c_client *client = container_of(dev, struct i2c_client, dev); @@ -1227,10 +1224,6 @@ static int apds990x_resume(struct device *dev) return 0; } -#else -#define apds990x_suspend NULL -#define apds990x_resume NULL -#define apds990x_shutdown NULL #endif #ifdef CONFIG_PM_RUNTIME diff --git a/drivers/misc/arm-charlcd.c b/drivers/misc/arm-charlcd.c index fe8616a8d287..48651ef0028c 100644 --- a/drivers/misc/arm-charlcd.c +++ b/drivers/misc/arm-charlcd.c @@ -378,18 +378,7 @@ static struct platform_driver charlcd_driver = { .remove = __exit_p(charlcd_remove), }; -static int __init charlcd_init(void) -{ - return platform_driver_probe(&charlcd_driver, charlcd_probe); -} - -static void __exit charlcd_exit(void) -{ - platform_driver_unregister(&charlcd_driver); -} - -module_init(charlcd_init); -module_exit(charlcd_exit); +module_platform_driver_probe(charlcd_driver, charlcd_probe); MODULE_AUTHOR("Linus Walleij <triad@df.lth.se>"); MODULE_DESCRIPTION("ARM Character LCD Driver"); diff --git a/drivers/misc/atmel_pwm.c b/drivers/misc/atmel_pwm.c index 28f5aaa19d4a..494d0500bda6 100644 --- a/drivers/misc/atmel_pwm.c +++ b/drivers/misc/atmel_pwm.c @@ -393,17 +393,7 @@ static struct platform_driver atmel_pwm_driver = { */ }; -static int __init pwm_init(void) -{ - return platform_driver_probe(&atmel_pwm_driver, pwm_probe); -} -module_init(pwm_init); - -static void __exit pwm_exit(void) -{ - platform_driver_unregister(&atmel_pwm_driver); -} -module_exit(pwm_exit); +module_platform_driver_probe(atmel_pwm_driver, pwm_probe); MODULE_DESCRIPTION("Driver for AT32/AT91 PWM module"); MODULE_LICENSE("GPL"); diff --git a/drivers/misc/bh1770glc.c b/drivers/misc/bh1770glc.c index 2ed8fc3be7e6..f4975f7d0d5b 100644 --- a/drivers/misc/bh1770glc.c +++ b/drivers/misc/bh1770glc.c @@ -1310,7 +1310,7 @@ static int bh1770_remove(struct i2c_client *client) return 0; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int bh1770_suspend(struct device *dev) { struct i2c_client *client = container_of(dev, struct i2c_client, dev); @@ -1346,11 +1346,6 @@ static int bh1770_resume(struct device *dev) } return ret; } - -#else -#define bh1770_suspend NULL -#define bh1770_shutdown NULL -#define bh1770_resume NULL #endif #ifdef CONFIG_PM_RUNTIME diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c index cf03d0abf33e..818f3a0e62bf 100644 --- a/drivers/misc/bh1780gli.c +++ b/drivers/misc/bh1780gli.c @@ -196,7 +196,7 @@ static int bh1780_remove(struct i2c_client *client) return 0; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP static int bh1780_suspend(struct device *dev) { struct bh1780_data *ddata; @@ -235,11 +235,9 @@ static int bh1780_resume(struct device *dev) return 0; } +#endif /* CONFIG_PM_SLEEP */ + static SIMPLE_DEV_PM_OPS(bh1780_pm, bh1780_suspend, bh1780_resume); -#define BH1780_PMOPS (&bh1780_pm) -#else -#define BH1780_PMOPS NULL -#endif /* CONFIG_PM */ static const struct i2c_device_id bh1780_id[] = { { "bh1780", 0 }, @@ -252,7 +250,7 @@ static struct i2c_driver bh1780_driver = { .id_table = bh1780_id, .driver = { .name = "bh1780", - .pm = BH1780_PMOPS, + .pm = &bh1780_pm, }, }; diff --git a/drivers/misc/cs5535-mfgpt.c b/drivers/misc/cs5535-mfgpt.c index 9858f36dad8b..effd8c6b2b94 100644 --- a/drivers/misc/cs5535-mfgpt.c +++ b/drivers/misc/cs5535-mfgpt.c @@ -24,8 +24,11 @@ static int mfgpt_reset_timers; module_param_named(mfgptfix, mfgpt_reset_timers, int, 0644); -MODULE_PARM_DESC(mfgptfix, "Reset the MFGPT timers during init; " - "required by some broken BIOSes (ie, TinyBIOS < 0.99)."); +MODULE_PARM_DESC(mfgptfix, "Try to reset the MFGPT timers during init; " + "required by some broken BIOSes (ie, TinyBIOS < 0.99) or kexec " + "(1 = reset the MFGPT using an undocumented bit, " + "2 = perform a soft reset by unconfiguring all timers); " + "use what works best for you."); struct cs5535_mfgpt_timer { struct cs5535_mfgpt_chip *chip; @@ -256,6 +259,28 @@ static void reset_all_timers(void) } /* + * This is another sledgehammer to reset all MFGPT timers. + * Instead of using the undocumented bit method it clears + * IRQ, NMI and RESET settings. + */ +static void soft_reset(void) +{ + int i; + struct cs5535_mfgpt_timer t; + + for (i = 0; i < MFGPT_MAX_TIMERS; i++) { + t.nr = i; + + cs5535_mfgpt_toggle_event(&t, MFGPT_CMP1, MFGPT_EVENT_RESET, 0); + cs5535_mfgpt_toggle_event(&t, MFGPT_CMP2, MFGPT_EVENT_RESET, 0); + cs5535_mfgpt_toggle_event(&t, MFGPT_CMP1, MFGPT_EVENT_NMI, 0); + cs5535_mfgpt_toggle_event(&t, MFGPT_CMP2, MFGPT_EVENT_NMI, 0); + cs5535_mfgpt_toggle_event(&t, MFGPT_CMP1, MFGPT_EVENT_IRQ, 0); + cs5535_mfgpt_toggle_event(&t, MFGPT_CMP2, MFGPT_EVENT_IRQ, 0); + } +} + +/* * Check whether any MFGPTs are available for the kernel to use. In most * cases, firmware that uses AMD's VSA code will claim all timers during * bootup; we certainly don't want to take them if they're already in use. @@ -271,15 +296,17 @@ static int scan_timers(struct cs5535_mfgpt_chip *mfgpt) int i; /* bios workaround */ - if (mfgpt_reset_timers) + if (mfgpt_reset_timers == 1) reset_all_timers(); + else if (mfgpt_reset_timers == 2) + soft_reset(); /* just to be safe, protect this section w/ lock */ spin_lock_irqsave(&mfgpt->lock, flags); for (i = 0; i < MFGPT_MAX_TIMERS; i++) { timer.nr = i; val = cs5535_mfgpt_read(&timer, MFGPT_REG_SETUP); - if (!(val & MFGPT_SETUP_SETUP)) { + if (!(val & MFGPT_SETUP_SETUP) || mfgpt_reset_timers == 2) { __set_bit(i, mfgpt->avail); timers++; } @@ -294,6 +321,12 @@ static int cs5535_mfgpt_probe(struct platform_device *pdev) struct resource *res; int err = -EIO, t; + if (mfgpt_reset_timers < 0 || mfgpt_reset_timers > 2) { + dev_err(&pdev->dev, "Bad mfgpt_reset_timers value: %i\n", + mfgpt_reset_timers); + goto done; + } + /* There are two ways to get the MFGPT base address; one is by * fetching it from MSR_LBAR_MFGPT, the other is by reading the * PCI BAR info. The latter method is easier (especially across diff --git a/drivers/misc/dummy-irq.c b/drivers/misc/dummy-irq.c new file mode 100644 index 000000000000..7014167e2c61 --- /dev/null +++ b/drivers/misc/dummy-irq.c @@ -0,0 +1,59 @@ +/* + * Dummy IRQ handler driver. + * + * This module only registers itself as a handler that is specified to it + * by the 'irq' parameter. + * + * The sole purpose of this module is to help with debugging of systems on + * which spurious IRQs would happen on disabled IRQ vector. + * + * Copyright (C) 2013 Jiri Kosina + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ +#include <linux/module.h> +#include <linux/irq.h> +#include <linux/interrupt.h> + +static int irq; + +static irqreturn_t dummy_interrupt(int irq, void *dev_id) +{ + static int count = 0; + + if (count == 0) { + printk(KERN_INFO "dummy-irq: interrupt occured on IRQ %d\n", + irq); + count++; + } + + return IRQ_NONE; +} + +static int __init dummy_irq_init(void) +{ + if (request_irq(irq, &dummy_interrupt, IRQF_SHARED, "dummy_irq", &irq)) { + printk(KERN_ERR "dummy-irq: cannot register IRQ %d\n", irq); + return -EIO; + } + printk(KERN_INFO "dummy-irq: registered for IRQ %d\n", irq); + return 0; +} + +static void __exit dummy_irq_exit(void) +{ + printk(KERN_INFO "dummy-irq unloaded\n"); + free_irq(irq, &irq); +} + +module_init(dummy_irq_init); +module_exit(dummy_irq_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jiri Kosina"); +module_param(irq, uint, 0444); +MODULE_PARM_DESC(irq, "The IRQ to register for"); diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c index b08cf8a08789..ad8fd8e64937 100644 --- a/drivers/misc/eeprom/at25.c +++ b/drivers/misc/eeprom/at25.c @@ -412,7 +412,7 @@ static int at25_probe(struct spi_device *spi) mutex_init(&at25->lock); at25->chip = chip; at25->spi = spi_dev_get(spi); - dev_set_drvdata(&spi->dev, at25); + spi_set_drvdata(spi, at25); at25->addrlen = addrlen; /* Export the EEPROM bytes through sysfs, since that's convenient. @@ -463,7 +463,7 @@ static int at25_remove(struct spi_device *spi) { struct at25_data *at25; - at25 = dev_get_drvdata(&spi->dev); + at25 = spi_get_drvdata(spi); sysfs_remove_bin_file(&spi->dev.kobj, &at25->bin); kfree(at25); return 0; diff --git a/drivers/misc/eeprom/eeprom_93xx46.c b/drivers/misc/eeprom/eeprom_93xx46.c index a6b5d5e73485..94cfc1212577 100644 --- a/drivers/misc/eeprom/eeprom_93xx46.c +++ b/drivers/misc/eeprom/eeprom_93xx46.c @@ -363,7 +363,7 @@ static int eeprom_93xx46_probe(struct spi_device *spi) dev_err(&spi->dev, "can't create erase interface\n"); } - dev_set_drvdata(&spi->dev, edev); + spi_set_drvdata(spi, edev); return 0; fail: kfree(edev); @@ -372,13 +372,13 @@ fail: static int eeprom_93xx46_remove(struct spi_device *spi) { - struct eeprom_93xx46_dev *edev = dev_get_drvdata(&spi->dev); + struct eeprom_93xx46_dev *edev = spi_get_drvdata(spi); if (!(edev->pdata->flags & EE_READONLY)) device_remove_file(&spi->dev, &dev_attr_erase); sysfs_remove_bin_file(&spi->dev.kobj, &edev->bin); - dev_set_drvdata(&spi->dev, NULL); + spi_set_drvdata(spi, NULL); kfree(edev); return 0; } diff --git a/drivers/misc/ep93xx_pwm.c b/drivers/misc/ep93xx_pwm.c index 16d7179e2f9b..96787ec15cad 100644 --- a/drivers/misc/ep93xx_pwm.c +++ b/drivers/misc/ep93xx_pwm.c @@ -365,18 +365,7 @@ static struct platform_driver ep93xx_pwm_driver = { .remove = __exit_p(ep93xx_pwm_remove), }; -static int __init ep93xx_pwm_init(void) -{ - return platform_driver_probe(&ep93xx_pwm_driver, ep93xx_pwm_probe); -} - -static void __exit ep93xx_pwm_exit(void) -{ - platform_driver_unregister(&ep93xx_pwm_driver); -} - -module_init(ep93xx_pwm_init); -module_exit(ep93xx_pwm_exit); +module_platform_driver_probe(ep93xx_pwm_driver, ep93xx_pwm_probe); MODULE_AUTHOR("Matthieu Crapet <mcrapet@gmail.com>, " "H Hartley Sweeten <hsweeten@visionengravers.com>"); diff --git a/drivers/misc/fsa9480.c b/drivers/misc/fsa9480.c index e8cbb1c59f4c..a725c79c35f5 100644 --- a/drivers/misc/fsa9480.c +++ b/drivers/misc/fsa9480.c @@ -474,10 +474,11 @@ static int fsa9480_remove(struct i2c_client *client) return 0; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP -static int fsa9480_suspend(struct i2c_client *client, pm_message_t state) +static int fsa9480_suspend(struct device *dev) { + struct i2c_client *client = to_i2c_client(dev); struct fsa9480_usbsw *usbsw = i2c_get_clientdata(client); struct fsa9480_platform_data *pdata = usbsw->pdata; @@ -490,8 +491,9 @@ static int fsa9480_suspend(struct i2c_client *client, pm_message_t state) return 0; } -static int fsa9480_resume(struct i2c_client *client) +static int fsa9480_resume(struct device *dev) { + struct i2c_client *client = to_i2c_client(dev); struct fsa9480_usbsw *usbsw = i2c_get_clientdata(client); int dev1, dev2; @@ -515,12 +517,14 @@ static int fsa9480_resume(struct i2c_client *client) return 0; } +static SIMPLE_DEV_PM_OPS(fsa9480_pm_ops, fsa9480_suspend, fsa9480_resume); +#define FSA9480_PM_OPS (&fsa9480_pm_ops) + #else -#define fsa9480_suspend NULL -#define fsa9480_resume NULL +#define FSA9480_PM_OPS NULL -#endif /* CONFIG_PM */ +#endif /* CONFIG_PM_SLEEP */ static const struct i2c_device_id fsa9480_id[] = { {"fsa9480", 0}, @@ -531,11 +535,10 @@ MODULE_DEVICE_TABLE(i2c, fsa9480_id); static struct i2c_driver fsa9480_i2c_driver = { .driver = { .name = "fsa9480", + .pm = FSA9480_PM_OPS, }, .probe = fsa9480_probe, .remove = fsa9480_remove, - .resume = fsa9480_resume, - .suspend = fsa9480_suspend, .id_table = fsa9480_id, }; diff --git a/drivers/misc/isl29003.c b/drivers/misc/isl29003.c index 29b306c6bdb3..c5145b3fcce8 100644 --- a/drivers/misc/isl29003.c +++ b/drivers/misc/isl29003.c @@ -409,18 +409,20 @@ static int isl29003_remove(struct i2c_client *client) return 0; } -#ifdef CONFIG_PM -static int isl29003_suspend(struct i2c_client *client, pm_message_t mesg) +#ifdef CONFIG_PM_SLEEP +static int isl29003_suspend(struct device *dev) { + struct i2c_client *client = to_i2c_client(dev); struct isl29003_data *data = i2c_get_clientdata(client); data->power_state_before_suspend = isl29003_get_power_state(client); return isl29003_set_power_state(client, 0); } -static int isl29003_resume(struct i2c_client *client) +static int isl29003_resume(struct device *dev) { int i; + struct i2c_client *client = to_i2c_client(dev); struct isl29003_data *data = i2c_get_clientdata(client); /* restore registers from cache */ @@ -432,10 +434,12 @@ static int isl29003_resume(struct i2c_client *client) data->power_state_before_suspend); } +static SIMPLE_DEV_PM_OPS(isl29003_pm_ops, isl29003_suspend, isl29003_resume); +#define ISL29003_PM_OPS (&isl29003_pm_ops) + #else -#define isl29003_suspend NULL -#define isl29003_resume NULL -#endif /* CONFIG_PM */ +#define ISL29003_PM_OPS NULL +#endif /* CONFIG_PM_SLEEP */ static const struct i2c_device_id isl29003_id[] = { { "isl29003", 0 }, @@ -447,9 +451,8 @@ static struct i2c_driver isl29003_driver = { .driver = { .name = ISL29003_DRV_NAME, .owner = THIS_MODULE, + .pm = ISL29003_PM_OPS, }, - .suspend = isl29003_suspend, - .resume = isl29003_resume, .probe = isl29003_probe, .remove = isl29003_remove, .id_table = isl29003_id, diff --git a/drivers/misc/lattice-ecp3-config.c b/drivers/misc/lattice-ecp3-config.c index 155700bfd2b6..bb26f086bd8b 100644 --- a/drivers/misc/lattice-ecp3-config.c +++ b/drivers/misc/lattice-ecp3-config.c @@ -69,7 +69,7 @@ static const struct ecp3_dev ecp3_dev[] = { static void firmware_load(const struct firmware *fw, void *context) { struct spi_device *spi = (struct spi_device *)context; - struct fpga_data *data = dev_get_drvdata(&spi->dev); + struct fpga_data *data = spi_get_drvdata(spi); u8 *buffer; int ret; u8 txbuf[8]; diff --git a/drivers/misc/mei/Kconfig b/drivers/misc/mei/Kconfig index d21b4d006a55..c76fa31e9bf6 100644 --- a/drivers/misc/mei/Kconfig +++ b/drivers/misc/mei/Kconfig @@ -10,10 +10,9 @@ config INTEL_MEI <http://software.intel.com/en-us/manageability/> config INTEL_MEI_ME - bool "ME Enabled Intel Chipsets" - depends on INTEL_MEI + tristate "ME Enabled Intel Chipsets" + select INTEL_MEI depends on X86 && PCI && WATCHDOG_CORE - default y help MEI support for ME Enabled Intel chipsets. diff --git a/drivers/misc/mei/Makefile b/drivers/misc/mei/Makefile index 040af6c7b147..08698a466268 100644 --- a/drivers/misc/mei/Makefile +++ b/drivers/misc/mei/Makefile @@ -10,5 +10,10 @@ mei-objs += client.o mei-objs += main.o mei-objs += amthif.o mei-objs += wd.o -mei-$(CONFIG_INTEL_MEI_ME) += pci-me.o -mei-$(CONFIG_INTEL_MEI_ME) += hw-me.o +mei-objs += bus.o +mei-objs += nfc.o +mei-$(CONFIG_DEBUG_FS) += debugfs.o + +obj-$(CONFIG_INTEL_MEI_ME) += mei-me.o +mei-me-objs := pci-me.o +mei-me-objs += hw-me.o diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c index c86d7e3839a4..31a6212cb8b1 100644 --- a/drivers/misc/mei/amthif.c +++ b/drivers/misc/mei/amthif.c @@ -449,7 +449,7 @@ int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots, struct mei_msg_hdr mei_hdr; struct mei_cl *cl = cb->cl; size_t len = dev->iamthif_msg_buf_size - dev->iamthif_msg_buf_index; - size_t msg_slots = mei_data2slots(len); + u32 msg_slots = mei_data2slots(len); mei_hdr.host_addr = cl->host_client_id; mei_hdr.me_addr = cl->me_client_id; @@ -505,14 +505,15 @@ int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots, * mei_amthif_irq_read_message - read routine after ISR to * handle the read amthif message * - * @complete_list: An instance of our list structure * @dev: the device structure * @mei_hdr: header of amthif message + * @complete_list: An instance of our list structure * * returns 0 on success, <0 on failure. */ -int mei_amthif_irq_read_message(struct mei_cl_cb *complete_list, - struct mei_device *dev, struct mei_msg_hdr *mei_hdr) +int mei_amthif_irq_read_msg(struct mei_device *dev, + struct mei_msg_hdr *mei_hdr, + struct mei_cl_cb *complete_list) { struct mei_cl_cb *cb; unsigned char *buffer; @@ -530,8 +531,7 @@ int mei_amthif_irq_read_message(struct mei_cl_cb *complete_list, if (!mei_hdr->msg_complete) return 0; - dev_dbg(&dev->pdev->dev, - "amthif_message_buffer_index =%d\n", + dev_dbg(&dev->pdev->dev, "amthif_message_buffer_index =%d\n", mei_hdr->length); dev_dbg(&dev->pdev->dev, "completed amthif read.\n "); @@ -566,12 +566,13 @@ int mei_amthif_irq_read_message(struct mei_cl_cb *complete_list, */ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots) { + u32 msg_slots = mei_data2slots(sizeof(struct hbm_flow_control)); - if (((*slots) * sizeof(u32)) < (sizeof(struct mei_msg_hdr) - + sizeof(struct hbm_flow_control))) { + if (*slots < msg_slots) return -EMSGSIZE; - } - *slots -= mei_data2slots(sizeof(struct hbm_flow_control)); + + *slots -= msg_slots; + if (mei_hbm_cl_flow_control_req(dev, &dev->iamthif_cl)) { dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n"); return -EIO; diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c new file mode 100644 index 000000000000..1e935eacaa7f --- /dev/null +++ b/drivers/misc/mei/bus.c @@ -0,0 +1,528 @@ +/* + * Intel Management Engine Interface (Intel MEI) Linux driver + * Copyright (c) 2012-2013, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + */ + +#include <linux/module.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/mutex.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/mei_cl_bus.h> + +#include "mei_dev.h" +#include "hw-me.h" +#include "client.h" + +#define to_mei_cl_driver(d) container_of(d, struct mei_cl_driver, driver) +#define to_mei_cl_device(d) container_of(d, struct mei_cl_device, dev) + +static int mei_cl_device_match(struct device *dev, struct device_driver *drv) +{ + struct mei_cl_device *device = to_mei_cl_device(dev); + struct mei_cl_driver *driver = to_mei_cl_driver(drv); + const struct mei_cl_device_id *id; + + if (!device) + return 0; + + if (!driver || !driver->id_table) + return 0; + + id = driver->id_table; + + while (id->name[0]) { + if (!strcmp(dev_name(dev), id->name)) + return 1; + + id++; + } + + return 0; +} + +static int mei_cl_device_probe(struct device *dev) +{ + struct mei_cl_device *device = to_mei_cl_device(dev); + struct mei_cl_driver *driver; + struct mei_cl_device_id id; + + if (!device) + return 0; + + driver = to_mei_cl_driver(dev->driver); + if (!driver || !driver->probe) + return -ENODEV; + + dev_dbg(dev, "Device probe\n"); + + strncpy(id.name, dev_name(dev), MEI_CL_NAME_SIZE); + + return driver->probe(device, &id); +} + +static int mei_cl_device_remove(struct device *dev) +{ + struct mei_cl_device *device = to_mei_cl_device(dev); + struct mei_cl_driver *driver; + + if (!device || !dev->driver) + return 0; + + if (device->event_cb) { + device->event_cb = NULL; + cancel_work_sync(&device->event_work); + } + + driver = to_mei_cl_driver(dev->driver); + if (!driver->remove) { + dev->driver = NULL; + + return 0; + } + + return driver->remove(device); +} + +static ssize_t modalias_show(struct device *dev, struct device_attribute *a, + char *buf) +{ + int len; + + len = snprintf(buf, PAGE_SIZE, "mei:%s\n", dev_name(dev)); + + return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; +} + +static struct device_attribute mei_cl_dev_attrs[] = { + __ATTR_RO(modalias), + __ATTR_NULL, +}; + +static int mei_cl_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + if (add_uevent_var(env, "MODALIAS=mei:%s", dev_name(dev))) + return -ENOMEM; + + return 0; +} + +static struct bus_type mei_cl_bus_type = { + .name = "mei", + .dev_attrs = mei_cl_dev_attrs, + .match = mei_cl_device_match, + .probe = mei_cl_device_probe, + .remove = mei_cl_device_remove, + .uevent = mei_cl_uevent, +}; + +static void mei_cl_dev_release(struct device *dev) +{ + kfree(to_mei_cl_device(dev)); +} + +static struct device_type mei_cl_device_type = { + .release = mei_cl_dev_release, +}; + +static struct mei_cl *mei_bus_find_mei_cl_by_uuid(struct mei_device *dev, + uuid_le uuid) +{ + struct mei_cl *cl, *next; + + list_for_each_entry_safe(cl, next, &dev->device_list, device_link) { + if (!uuid_le_cmp(uuid, cl->device_uuid)) + return cl; + } + + return NULL; +} +struct mei_cl_device *mei_cl_add_device(struct mei_device *dev, + uuid_le uuid, char *name, + struct mei_cl_ops *ops) +{ + struct mei_cl_device *device; + struct mei_cl *cl; + int status; + + cl = mei_bus_find_mei_cl_by_uuid(dev, uuid); + if (cl == NULL) + return NULL; + + device = kzalloc(sizeof(struct mei_cl_device), GFP_KERNEL); + if (!device) + return NULL; + + device->cl = cl; + device->ops = ops; + + device->dev.parent = &dev->pdev->dev; + device->dev.bus = &mei_cl_bus_type; + device->dev.type = &mei_cl_device_type; + + dev_set_name(&device->dev, "%s", name); + + status = device_register(&device->dev); + if (status) { + dev_err(&dev->pdev->dev, "Failed to register MEI device\n"); + kfree(device); + return NULL; + } + + cl->device = device; + + dev_dbg(&device->dev, "client %s registered\n", name); + + return device; +} +EXPORT_SYMBOL_GPL(mei_cl_add_device); + +void mei_cl_remove_device(struct mei_cl_device *device) +{ + device_unregister(&device->dev); +} +EXPORT_SYMBOL_GPL(mei_cl_remove_device); + +int __mei_cl_driver_register(struct mei_cl_driver *driver, struct module *owner) +{ + int err; + + driver->driver.name = driver->name; + driver->driver.owner = owner; + driver->driver.bus = &mei_cl_bus_type; + + err = driver_register(&driver->driver); + if (err) + return err; + + pr_debug("mei: driver [%s] registered\n", driver->driver.name); + + return 0; +} +EXPORT_SYMBOL_GPL(__mei_cl_driver_register); + +void mei_cl_driver_unregister(struct mei_cl_driver *driver) +{ + driver_unregister(&driver->driver); + + pr_debug("mei: driver [%s] unregistered\n", driver->driver.name); +} +EXPORT_SYMBOL_GPL(mei_cl_driver_unregister); + +static int ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, + bool blocking) +{ + struct mei_device *dev; + struct mei_cl_cb *cb; + int id; + int rets; + + if (WARN_ON(!cl || !cl->dev)) + return -ENODEV; + + dev = cl->dev; + + if (cl->state != MEI_FILE_CONNECTED) + return -ENODEV; + + /* Check if we have an ME client device */ + id = mei_me_cl_by_id(dev, cl->me_client_id); + if (id < 0) + return -ENODEV; + + if (length > dev->me_clients[id].props.max_msg_length) + return -EINVAL; + + cb = mei_io_cb_init(cl, NULL); + if (!cb) + return -ENOMEM; + + rets = mei_io_cb_alloc_req_buf(cb, length); + if (rets < 0) { + mei_io_cb_free(cb); + return rets; + } + + memcpy(cb->request_buffer.data, buf, length); + + mutex_lock(&dev->device_lock); + + rets = mei_cl_write(cl, cb, blocking); + + mutex_unlock(&dev->device_lock); + if (rets < 0) + mei_io_cb_free(cb); + + return rets; +} + +int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) +{ + struct mei_device *dev; + struct mei_cl_cb *cb; + size_t r_length; + int err; + + if (WARN_ON(!cl || !cl->dev)) + return -ENODEV; + + dev = cl->dev; + + mutex_lock(&dev->device_lock); + + if (!cl->read_cb) { + err = mei_cl_read_start(cl, length); + if (err < 0) { + mutex_unlock(&dev->device_lock); + return err; + } + } + + if (cl->reading_state != MEI_READ_COMPLETE && + !waitqueue_active(&cl->rx_wait)) { + mutex_unlock(&dev->device_lock); + + if (wait_event_interruptible(cl->rx_wait, + (MEI_READ_COMPLETE == cl->reading_state))) { + if (signal_pending(current)) + return -EINTR; + return -ERESTARTSYS; + } + + mutex_lock(&dev->device_lock); + } + + cb = cl->read_cb; + + if (cl->reading_state != MEI_READ_COMPLETE) { + r_length = 0; + goto out; + } + + r_length = min_t(size_t, length, cb->buf_idx); + + memcpy(buf, cb->response_buffer.data, r_length); + + mei_io_cb_free(cb); + cl->reading_state = MEI_IDLE; + cl->read_cb = NULL; + +out: + mutex_unlock(&dev->device_lock); + + return r_length; +} + +inline int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length) +{ + return ___mei_cl_send(cl, buf, length, 0); +} + +inline int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length) +{ + return ___mei_cl_send(cl, buf, length, 1); +} + +int mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length) +{ + struct mei_cl *cl = device->cl; + + if (cl == NULL) + return -ENODEV; + + if (device->ops && device->ops->send) + return device->ops->send(device, buf, length); + + return __mei_cl_send(cl, buf, length); +} +EXPORT_SYMBOL_GPL(mei_cl_send); + +int mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length) +{ + struct mei_cl *cl = device->cl; + + if (cl == NULL) + return -ENODEV; + + if (device->ops && device->ops->recv) + return device->ops->recv(device, buf, length); + + return __mei_cl_recv(cl, buf, length); +} +EXPORT_SYMBOL_GPL(mei_cl_recv); + +static void mei_bus_event_work(struct work_struct *work) +{ + struct mei_cl_device *device; + + device = container_of(work, struct mei_cl_device, event_work); + + if (device->event_cb) + device->event_cb(device, device->events, device->event_context); + + device->events = 0; + + /* Prepare for the next read */ + mei_cl_read_start(device->cl, 0); +} + +int mei_cl_register_event_cb(struct mei_cl_device *device, + mei_cl_event_cb_t event_cb, void *context) +{ + if (device->event_cb) + return -EALREADY; + + device->events = 0; + device->event_cb = event_cb; + device->event_context = context; + INIT_WORK(&device->event_work, mei_bus_event_work); + + mei_cl_read_start(device->cl, 0); + + return 0; +} +EXPORT_SYMBOL_GPL(mei_cl_register_event_cb); + +void *mei_cl_get_drvdata(const struct mei_cl_device *device) +{ + return dev_get_drvdata(&device->dev); +} +EXPORT_SYMBOL_GPL(mei_cl_get_drvdata); + +void mei_cl_set_drvdata(struct mei_cl_device *device, void *data) +{ + dev_set_drvdata(&device->dev, data); +} +EXPORT_SYMBOL_GPL(mei_cl_set_drvdata); + +int mei_cl_enable_device(struct mei_cl_device *device) +{ + int err; + struct mei_device *dev; + struct mei_cl *cl = device->cl; + + if (cl == NULL) + return -ENODEV; + + dev = cl->dev; + + mutex_lock(&dev->device_lock); + + cl->state = MEI_FILE_CONNECTING; + + err = mei_cl_connect(cl, NULL); + if (err < 0) { + mutex_unlock(&dev->device_lock); + dev_err(&dev->pdev->dev, "Could not connect to the ME client"); + + return err; + } + + mutex_unlock(&dev->device_lock); + + if (device->event_cb && !cl->read_cb) + mei_cl_read_start(device->cl, 0); + + if (!device->ops || !device->ops->enable) + return 0; + + return device->ops->enable(device); +} +EXPORT_SYMBOL_GPL(mei_cl_enable_device); + +int mei_cl_disable_device(struct mei_cl_device *device) +{ + int err; + struct mei_device *dev; + struct mei_cl *cl = device->cl; + + if (cl == NULL) + return -ENODEV; + + dev = cl->dev; + + mutex_lock(&dev->device_lock); + + if (cl->state != MEI_FILE_CONNECTED) { + mutex_unlock(&dev->device_lock); + dev_err(&dev->pdev->dev, "Already disconnected"); + + return 0; + } + + cl->state = MEI_FILE_DISCONNECTING; + + err = mei_cl_disconnect(cl); + if (err < 0) { + mutex_unlock(&dev->device_lock); + dev_err(&dev->pdev->dev, + "Could not disconnect from the ME client"); + + return err; + } + + /* Flush queues and remove any pending read */ + mei_cl_flush_queues(cl); + + if (cl->read_cb) { + struct mei_cl_cb *cb = NULL; + + cb = mei_cl_find_read_cb(cl); + /* Remove entry from read list */ + if (cb) + list_del(&cb->list); + + cb = cl->read_cb; + cl->read_cb = NULL; + + if (cb) { + mei_io_cb_free(cb); + cb = NULL; + } + } + + mutex_unlock(&dev->device_lock); + + if (!device->ops || !device->ops->disable) + return 0; + + return device->ops->disable(device); +} +EXPORT_SYMBOL_GPL(mei_cl_disable_device); + +void mei_cl_bus_rx_event(struct mei_cl *cl) +{ + struct mei_cl_device *device = cl->device; + + if (!device || !device->event_cb) + return; + + set_bit(MEI_CL_EVENT_RX, &device->events); + + schedule_work(&device->event_work); +} + +int __init mei_cl_bus_init(void) +{ + return bus_register(&mei_cl_bus_type); +} + +void __exit mei_cl_bus_exit(void) +{ + bus_unregister(&mei_cl_bus_type); +} diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 1569afe935de..71892745e2e8 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -216,6 +216,7 @@ void mei_cl_init(struct mei_cl *cl, struct mei_device *dev) init_waitqueue_head(&cl->rx_wait); init_waitqueue_head(&cl->tx_wait); INIT_LIST_HEAD(&cl->link); + INIT_LIST_HEAD(&cl->device_link); cl->reading_state = MEI_IDLE; cl->writing_state = MEI_IDLE; cl->dev = dev; @@ -357,6 +358,9 @@ void mei_host_client_init(struct work_struct *work) mei_amthif_host_init(dev); else if (!uuid_le_cmp(client_props->protocol_name, mei_wd_guid)) mei_wd_host_init(dev); + else if (!uuid_le_cmp(client_props->protocol_name, mei_nfc_guid)) + mei_nfc_host_init(dev); + } dev->dev_state = MEI_DEV_ENABLED; @@ -620,7 +624,7 @@ int mei_cl_flow_ctrl_reduce(struct mei_cl *cl) * * returns 0 on success, <0 on failure. */ -int mei_cl_read_start(struct mei_cl *cl) +int mei_cl_read_start(struct mei_cl *cl, size_t length) { struct mei_device *dev; struct mei_cl_cb *cb; @@ -653,8 +657,9 @@ int mei_cl_read_start(struct mei_cl *cl) if (!cb) return -ENOMEM; - rets = mei_io_cb_alloc_resp_buf(cb, - dev->me_clients[i].props.max_msg_length); + /* always allocate at least client max message */ + length = max_t(size_t, length, dev->me_clients[i].props.max_msg_length); + rets = mei_io_cb_alloc_resp_buf(cb, length); if (rets) goto err; @@ -677,6 +682,111 @@ err: } /** + * mei_cl_write - submit a write cb to mei device + assumes device_lock is locked + * + * @cl: host client + * @cl: write callback with filled data + * + * returns numbe of bytes sent on success, <0 on failure. + */ +int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking) +{ + struct mei_device *dev; + struct mei_msg_data *buf; + struct mei_msg_hdr mei_hdr; + int rets; + + + if (WARN_ON(!cl || !cl->dev)) + return -ENODEV; + + if (WARN_ON(!cb)) + return -EINVAL; + + dev = cl->dev; + + + buf = &cb->request_buffer; + + dev_dbg(&dev->pdev->dev, "mei_cl_write %d\n", buf->size); + + + cb->fop_type = MEI_FOP_WRITE; + + rets = mei_cl_flow_ctrl_creds(cl); + if (rets < 0) + goto err; + + /* Host buffer is not ready, we queue the request */ + if (rets == 0 || !dev->hbuf_is_ready) { + cb->buf_idx = 0; + /* unseting complete will enqueue the cb for write */ + mei_hdr.msg_complete = 0; + cl->writing_state = MEI_WRITING; + rets = buf->size; + goto out; + } + + dev->hbuf_is_ready = false; + + /* Check for a maximum length */ + if (buf->size > mei_hbuf_max_len(dev)) { + mei_hdr.length = mei_hbuf_max_len(dev); + mei_hdr.msg_complete = 0; + } else { + mei_hdr.length = buf->size; + mei_hdr.msg_complete = 1; + } + + mei_hdr.host_addr = cl->host_client_id; + mei_hdr.me_addr = cl->me_client_id; + mei_hdr.reserved = 0; + + dev_dbg(&dev->pdev->dev, "write " MEI_HDR_FMT "\n", + MEI_HDR_PRM(&mei_hdr)); + + + if (mei_write_message(dev, &mei_hdr, buf->data)) { + rets = -EIO; + goto err; + } + + cl->writing_state = MEI_WRITING; + cb->buf_idx = mei_hdr.length; + + rets = buf->size; +out: + if (mei_hdr.msg_complete) { + if (mei_cl_flow_ctrl_reduce(cl)) { + rets = -ENODEV; + goto err; + } + list_add_tail(&cb->list, &dev->write_waiting_list.list); + } else { + list_add_tail(&cb->list, &dev->write_list.list); + } + + + if (blocking && cl->writing_state != MEI_WRITE_COMPLETE) { + + mutex_unlock(&dev->device_lock); + if (wait_event_interruptible(cl->tx_wait, + cl->writing_state == MEI_WRITE_COMPLETE)) { + if (signal_pending(current)) + rets = -EINTR; + else + rets = -ERESTARTSYS; + } + mutex_lock(&dev->device_lock); + } +err: + return rets; +} + + + +/** * mei_cl_all_disconnect - disconnect forcefully all connected clients * * @dev - mei device diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h index 214b2397ec3e..cfdb144526aa 100644 --- a/drivers/misc/mei/client.h +++ b/drivers/misc/mei/client.h @@ -86,17 +86,16 @@ int mei_cl_flow_ctrl_reduce(struct mei_cl *cl); */ bool mei_cl_is_other_connecting(struct mei_cl *cl); int mei_cl_disconnect(struct mei_cl *cl); - -int mei_cl_read_start(struct mei_cl *cl); - int mei_cl_connect(struct mei_cl *cl, struct file *file); +int mei_cl_read_start(struct mei_cl *cl, size_t length); +int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking); void mei_host_client_init(struct work_struct *work); + void mei_cl_all_disconnect(struct mei_device *dev); void mei_cl_all_read_wakeup(struct mei_device *dev); void mei_cl_all_write_clear(struct mei_device *dev); - #endif /* _MEI_CLIENT_H_ */ diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c new file mode 100644 index 000000000000..e3870f22d238 --- /dev/null +++ b/drivers/misc/mei/debugfs.c @@ -0,0 +1,143 @@ +/* + * + * Intel Management Engine Interface (Intel MEI) Linux driver + * Copyright (c) 2012-2013, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + */ +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/debugfs.h> +#include <linux/pci.h> + +#include <linux/mei.h> + +#include "mei_dev.h" +#include "hw.h" + +static ssize_t mei_dbgfs_read_meclients(struct file *fp, char __user *ubuf, + size_t cnt, loff_t *ppos) +{ + struct mei_device *dev = fp->private_data; + struct mei_me_client *cl; + const size_t bufsz = 1024; + char *buf = kzalloc(bufsz, GFP_KERNEL); + int i; + int pos = 0; + int ret; + + if (!buf) + return -ENOMEM; + + pos += scnprintf(buf + pos, bufsz - pos, + " |id|addr| UUID |con|msg len|\n"); + + mutex_lock(&dev->device_lock); + + /* if the driver is not enabled the list won't b consitent */ + if (dev->dev_state != MEI_DEV_ENABLED) + goto out; + + for (i = 0; i < dev->me_clients_num; i++) { + cl = &dev->me_clients[i]; + + /* skip me clients that cannot be connected */ + if (cl->props.max_number_of_connections == 0) + continue; + + pos += scnprintf(buf + pos, bufsz - pos, + "%2d|%2d|%4d|%pUl|%3d|%7d|\n", + i, cl->client_id, + cl->props.fixed_address, + &cl->props.protocol_name, + cl->props.max_number_of_connections, + cl->props.max_msg_length); + } +out: + mutex_unlock(&dev->device_lock); + ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, pos); + kfree(buf); + return ret; +} + +static const struct file_operations mei_dbgfs_fops_meclients = { + .open = simple_open, + .read = mei_dbgfs_read_meclients, + .llseek = generic_file_llseek, +}; + +static ssize_t mei_dbgfs_read_devstate(struct file *fp, char __user *ubuf, + size_t cnt, loff_t *ppos) +{ + struct mei_device *dev = fp->private_data; + const size_t bufsz = 1024; + char *buf = kzalloc(bufsz, GFP_KERNEL); + int pos = 0; + int ret; + + if (!buf) + return -ENOMEM; + + pos += scnprintf(buf + pos, bufsz - pos, "%s\n", + mei_dev_state_str(dev->dev_state)); + ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, pos); + kfree(buf); + return ret; +} +static const struct file_operations mei_dbgfs_fops_devstate = { + .open = simple_open, + .read = mei_dbgfs_read_devstate, + .llseek = generic_file_llseek, +}; + +/** + * mei_dbgfs_deregister - Remove the debugfs files and directories + * @mei - pointer to mei device private dat + */ +void mei_dbgfs_deregister(struct mei_device *dev) +{ + if (!dev->dbgfs_dir) + return; + debugfs_remove_recursive(dev->dbgfs_dir); + dev->dbgfs_dir = NULL; +} + +/** + * Add the debugfs files + * + */ +int mei_dbgfs_register(struct mei_device *dev, const char *name) +{ + struct dentry *dir, *f; + dir = debugfs_create_dir(name, NULL); + if (!dir) + return -ENOMEM; + + f = debugfs_create_file("meclients", S_IRUSR, dir, + dev, &mei_dbgfs_fops_meclients); + if (!f) { + dev_err(&dev->pdev->dev, "meclients: registration failed\n"); + goto err; + } + f = debugfs_create_file("devstate", S_IRUSR, dir, + dev, &mei_dbgfs_fops_devstate); + if (!f) { + dev_err(&dev->pdev->dev, "devstate: registration failed\n"); + goto err; + } + dev->dbgfs_dir = dir; + return 0; +err: + mei_dbgfs_deregister(dev); + return -ENODEV; +} + diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index fb9e63ba3bb1..db605f5cf187 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -52,7 +52,7 @@ static void mei_hbm_me_cl_allocate(struct mei_device *dev) sizeof(struct mei_me_client), GFP_KERNEL); if (!clients) { dev_err(&dev->pdev->dev, "memory allocation for ME clients failed.\n"); - dev->dev_state = MEI_DEV_RESETING; + dev->dev_state = MEI_DEV_RESETTING; mei_reset(dev, 1); return; } @@ -123,12 +123,33 @@ static bool is_treat_specially_client(struct mei_cl *cl, return false; } +int mei_hbm_start_wait(struct mei_device *dev) +{ + int ret; + if (dev->hbm_state > MEI_HBM_START) + return 0; + + mutex_unlock(&dev->device_lock); + ret = wait_event_interruptible_timeout(dev->wait_recvd_msg, + dev->hbm_state == MEI_HBM_IDLE || + dev->hbm_state > MEI_HBM_START, + mei_secs_to_jiffies(MEI_INTEROP_TIMEOUT)); + mutex_lock(&dev->device_lock); + + if (ret <= 0 && (dev->hbm_state <= MEI_HBM_START)) { + dev->hbm_state = MEI_HBM_IDLE; + dev_err(&dev->pdev->dev, "wating for mei start failed\n"); + return -ETIMEDOUT; + } + return 0; +} + /** * mei_hbm_start_req - sends start request message. * * @dev: the device structure */ -void mei_hbm_start_req(struct mei_device *dev) +int mei_hbm_start_req(struct mei_device *dev) { struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; struct hbm_host_version_request *start_req; @@ -143,18 +164,19 @@ void mei_hbm_start_req(struct mei_device *dev) start_req->host_version.major_version = HBM_MAJOR_VERSION; start_req->host_version.minor_version = HBM_MINOR_VERSION; - dev->recvd_msg = false; + dev->hbm_state = MEI_HBM_IDLE; if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) { - dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n"); - dev->dev_state = MEI_DEV_RESETING; + dev_err(&dev->pdev->dev, "version message writet failed\n"); + dev->dev_state = MEI_DEV_RESETTING; mei_reset(dev, 1); + return -ENODEV; } - dev->init_clients_state = MEI_START_MESSAGE; + dev->hbm_state = MEI_HBM_START; dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; - return ; + return 0; } -/** +/* * mei_hbm_enum_clients_req - sends enumeration client request message. * * @dev: the device structure @@ -174,11 +196,11 @@ static void mei_hbm_enum_clients_req(struct mei_device *dev) enum_req->hbm_cmd = HOST_ENUM_REQ_CMD; if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) { - dev->dev_state = MEI_DEV_RESETING; - dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n"); + dev->dev_state = MEI_DEV_RESETTING; + dev_err(&dev->pdev->dev, "enumeration request write failed.\n"); mei_reset(dev, 1); } - dev->init_clients_state = MEI_ENUM_CLIENTS_MESSAGE; + dev->hbm_state = MEI_HBM_ENUM_CLIENTS; dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; return; } @@ -208,6 +230,7 @@ static int mei_hbm_prop_req(struct mei_device *dev) /* We got all client properties */ if (next_client_index == MEI_CLIENTS_MAX) { + dev->hbm_state = MEI_HBM_STARTED; schedule_work(&dev->init_work); return 0; @@ -226,8 +249,8 @@ static int mei_hbm_prop_req(struct mei_device *dev) prop_req->address = next_client_index; if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) { - dev->dev_state = MEI_DEV_RESETING; - dev_err(&dev->pdev->dev, "Properties request command failed\n"); + dev->dev_state = MEI_DEV_RESETTING; + dev_err(&dev->pdev->dev, "properties request write failed\n"); mei_reset(dev, 1); return -EIO; @@ -542,27 +565,28 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) dev->version = version_res->me_max_version; dev_dbg(&dev->pdev->dev, "version mismatch.\n"); + dev->hbm_state = MEI_HBM_STOP; mei_hbm_stop_req_prepare(dev, &dev->wr_msg.hdr, dev->wr_msg.data); mei_write_message(dev, &dev->wr_msg.hdr, dev->wr_msg.data); + return; } dev->version.major_version = HBM_MAJOR_VERSION; dev->version.minor_version = HBM_MINOR_VERSION; if (dev->dev_state == MEI_DEV_INIT_CLIENTS && - dev->init_clients_state == MEI_START_MESSAGE) { + dev->hbm_state == MEI_HBM_START) { dev->init_clients_timer = 0; mei_hbm_enum_clients_req(dev); } else { - dev->recvd_msg = false; - dev_dbg(&dev->pdev->dev, "reset due to received hbm: host start\n"); + dev_err(&dev->pdev->dev, "reset: wrong host start response\n"); mei_reset(dev, 1); return; } - dev->recvd_msg = true; + wake_up_interruptible(&dev->wait_recvd_msg); dev_dbg(&dev->pdev->dev, "host start response message received.\n"); break; @@ -591,23 +615,20 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) me_client = &dev->me_clients[dev->me_client_presentation_num]; if (props_res->status || !dev->me_clients) { - dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message wrong status.\n"); + dev_err(&dev->pdev->dev, "reset: properties response hbm wrong status.\n"); mei_reset(dev, 1); return; } if (me_client->client_id != props_res->address) { - dev_err(&dev->pdev->dev, - "Host client properties reply mismatch\n"); + dev_err(&dev->pdev->dev, "reset: host properties response address mismatch\n"); mei_reset(dev, 1); - return; } if (dev->dev_state != MEI_DEV_INIT_CLIENTS || - dev->init_clients_state != MEI_CLIENT_PROPERTIES_MESSAGE) { - dev_err(&dev->pdev->dev, - "Unexpected client properties reply\n"); + dev->hbm_state != MEI_HBM_CLIENT_PROPERTIES) { + dev_err(&dev->pdev->dev, "reset: unexpected properties response\n"); mei_reset(dev, 1); return; @@ -626,26 +647,28 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) enum_res = (struct hbm_host_enum_response *) mei_msg; memcpy(dev->me_clients_map, enum_res->valid_addresses, 32); if (dev->dev_state == MEI_DEV_INIT_CLIENTS && - dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) { + dev->hbm_state == MEI_HBM_ENUM_CLIENTS) { dev->init_clients_timer = 0; dev->me_client_presentation_num = 0; dev->me_client_index = 0; mei_hbm_me_cl_allocate(dev); - dev->init_clients_state = - MEI_CLIENT_PROPERTIES_MESSAGE; + dev->hbm_state = MEI_HBM_CLIENT_PROPERTIES; /* first property reqeust */ mei_hbm_prop_req(dev); } else { - dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n"); + dev_err(&dev->pdev->dev, "reset: unexpected enumeration response hbm.\n"); mei_reset(dev, 1); return; } break; case HOST_STOP_RES_CMD: + + if (dev->hbm_state != MEI_HBM_STOP) + dev_err(&dev->pdev->dev, "unexpected stop response hbm.\n"); dev->dev_state = MEI_DEV_DISABLED; - dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n"); + dev_info(&dev->pdev->dev, "reset: FW stop response.\n"); mei_reset(dev, 1); break; @@ -657,6 +680,7 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) case ME_STOP_REQ_CMD: + dev->hbm_state = MEI_HBM_STOP; mei_hbm_stop_req_prepare(dev, &dev->wr_ext_msg.hdr, dev->wr_ext_msg.data); break; diff --git a/drivers/misc/mei/hbm.h b/drivers/misc/mei/hbm.h index b552afbaf85c..e80dc24ef3e2 100644 --- a/drivers/misc/mei/hbm.h +++ b/drivers/misc/mei/hbm.h @@ -17,6 +17,27 @@ #ifndef _MEI_HBM_H_ #define _MEI_HBM_H_ +struct mei_device; +struct mei_msg_hdr; +struct mei_cl; + +/** + * enum mei_hbm_state - host bus message protocol state + * + * @MEI_HBM_IDLE : protocol not started + * @MEI_HBM_START : start request message was sent + * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent + * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties + */ +enum mei_hbm_state { + MEI_HBM_IDLE = 0, + MEI_HBM_START, + MEI_HBM_ENUM_CLIENTS, + MEI_HBM_CLIENT_PROPERTIES, + MEI_HBM_STARTED, + MEI_HBM_STOP, +}; + void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr); static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length) @@ -28,8 +49,8 @@ static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length) hdr->reserved = 0; } -void mei_hbm_start_req(struct mei_device *dev); - +int mei_hbm_start_req(struct mei_device *dev); +int mei_hbm_start_wait(struct mei_device *dev); int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl); int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl); int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl); diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 642c6223fa6c..fc032270916a 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -26,14 +26,14 @@ /** - * mei_reg_read - Reads 32bit data from the mei device + * mei_me_reg_read - Reads 32bit data from the mei device * * @dev: the device structure * @offset: offset from which to read the data * * returns register value (u32) */ -static inline u32 mei_reg_read(const struct mei_me_hw *hw, +static inline u32 mei_me_reg_read(const struct mei_me_hw *hw, unsigned long offset) { return ioread32(hw->mem_addr + offset); @@ -41,20 +41,20 @@ static inline u32 mei_reg_read(const struct mei_me_hw *hw, /** - * mei_reg_write - Writes 32bit data to the mei device + * mei_me_reg_write - Writes 32bit data to the mei device * * @dev: the device structure * @offset: offset from which to write the data * @value: register value to write (u32) */ -static inline void mei_reg_write(const struct mei_me_hw *hw, +static inline void mei_me_reg_write(const struct mei_me_hw *hw, unsigned long offset, u32 value) { iowrite32(value, hw->mem_addr + offset); } /** - * mei_mecbrw_read - Reads 32bit data from ME circular buffer + * mei_me_mecbrw_read - Reads 32bit data from ME circular buffer * read window register * * @dev: the device structure @@ -63,18 +63,18 @@ static inline void mei_reg_write(const struct mei_me_hw *hw, */ static u32 mei_me_mecbrw_read(const struct mei_device *dev) { - return mei_reg_read(to_me_hw(dev), ME_CB_RW); + return mei_me_reg_read(to_me_hw(dev), ME_CB_RW); } /** - * mei_mecsr_read - Reads 32bit data from the ME CSR + * mei_me_mecsr_read - Reads 32bit data from the ME CSR * * @dev: the device structure * * returns ME_CSR_HA register value (u32) */ -static inline u32 mei_mecsr_read(const struct mei_me_hw *hw) +static inline u32 mei_me_mecsr_read(const struct mei_me_hw *hw) { - return mei_reg_read(hw, ME_CSR_HA); + return mei_me_reg_read(hw, ME_CSR_HA); } /** @@ -86,7 +86,7 @@ static inline u32 mei_mecsr_read(const struct mei_me_hw *hw) */ static inline u32 mei_hcsr_read(const struct mei_me_hw *hw) { - return mei_reg_read(hw, H_CSR); + return mei_me_reg_read(hw, H_CSR); } /** @@ -98,7 +98,7 @@ static inline u32 mei_hcsr_read(const struct mei_me_hw *hw) static inline void mei_hcsr_set(struct mei_me_hw *hw, u32 hcsr) { hcsr &= ~H_IS; - mei_reg_write(hw, H_CSR, hcsr); + mei_me_reg_write(hw, H_CSR, hcsr); } @@ -123,7 +123,7 @@ static void mei_me_intr_clear(struct mei_device *dev) struct mei_me_hw *hw = to_me_hw(dev); u32 hcsr = mei_hcsr_read(hw); if ((hcsr & H_IS) == H_IS) - mei_reg_write(hw, H_CSR, hcsr); + mei_me_reg_write(hw, H_CSR, hcsr); } /** * mei_me_intr_enable - enables mei device interrupts @@ -228,10 +228,42 @@ static bool mei_me_host_is_ready(struct mei_device *dev) static bool mei_me_hw_is_ready(struct mei_device *dev) { struct mei_me_hw *hw = to_me_hw(dev); - hw->me_hw_state = mei_mecsr_read(hw); + hw->me_hw_state = mei_me_mecsr_read(hw); return (hw->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA; } +static int mei_me_hw_ready_wait(struct mei_device *dev) +{ + int err; + if (mei_me_hw_is_ready(dev)) + return 0; + + mutex_unlock(&dev->device_lock); + err = wait_event_interruptible_timeout(dev->wait_hw_ready, + dev->recvd_hw_ready, MEI_INTEROP_TIMEOUT); + mutex_lock(&dev->device_lock); + if (!err && !dev->recvd_hw_ready) { + dev_err(&dev->pdev->dev, + "wait hw ready failed. status = 0x%x\n", err); + return -ETIMEDOUT; + } + + dev->recvd_hw_ready = false; + return 0; +} + +static int mei_me_hw_start(struct mei_device *dev) +{ + int ret = mei_me_hw_ready_wait(dev); + if (ret) + return ret; + dev_dbg(&dev->pdev->dev, "hw is ready\n"); + + mei_me_host_set_ready(dev); + return ret; +} + + /** * mei_hbuf_filled_slots - gets number of device filled buffer slots * @@ -305,10 +337,11 @@ static int mei_me_write_message(struct mei_device *dev, unsigned char *buf) { struct mei_me_hw *hw = to_me_hw(dev); - unsigned long rem, dw_cnt; + unsigned long rem; unsigned long length = header->length; u32 *reg_buf = (u32 *)buf; u32 hcsr; + u32 dw_cnt; int i; int empty_slots; @@ -321,16 +354,16 @@ static int mei_me_write_message(struct mei_device *dev, if (empty_slots < 0 || dw_cnt > empty_slots) return -EIO; - mei_reg_write(hw, H_CB_WW, *((u32 *) header)); + mei_me_reg_write(hw, H_CB_WW, *((u32 *) header)); for (i = 0; i < length / 4; i++) - mei_reg_write(hw, H_CB_WW, reg_buf[i]); + mei_me_reg_write(hw, H_CB_WW, reg_buf[i]); rem = length & 0x3; if (rem > 0) { u32 reg = 0; memcpy(®, &buf[length - rem], rem); - mei_reg_write(hw, H_CB_WW, reg); + mei_me_reg_write(hw, H_CB_WW, reg); } hcsr = mei_hcsr_read(hw) | H_IG; @@ -354,7 +387,7 @@ static int mei_me_count_full_read_slots(struct mei_device *dev) char read_ptr, write_ptr; unsigned char buffer_depth, filled_slots; - hw->me_hw_state = mei_mecsr_read(hw); + hw->me_hw_state = mei_me_mecsr_read(hw); buffer_depth = (unsigned char)((hw->me_hw_state & ME_CBD_HRA) >> 24); read_ptr = (char) ((hw->me_hw_state & ME_CBRP_HRA) >> 8); write_ptr = (char) ((hw->me_hw_state & ME_CBWP_HRA) >> 16); @@ -414,7 +447,7 @@ irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id) return IRQ_NONE; /* clear H_IS bit in H_CSR */ - mei_reg_write(hw, H_CSR, csr_reg); + mei_me_reg_write(hw, H_CSR, csr_reg); return IRQ_WAKE_THREAD; } @@ -433,12 +466,8 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) { struct mei_device *dev = (struct mei_device *) dev_id; struct mei_cl_cb complete_list; - struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL; - struct mei_cl *cl; s32 slots; int rets; - bool bus_message_received; - dev_dbg(&dev->pdev->dev, "function called after ISR to handle the interrupt processing.\n"); /* initialize our complete list */ @@ -452,7 +481,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) /* check if ME wants a reset */ if (!mei_hw_is_ready(dev) && - dev->dev_state != MEI_DEV_RESETING && + dev->dev_state != MEI_DEV_RESETTING && dev->dev_state != MEI_DEV_INITIALIZING) { dev_dbg(&dev->pdev->dev, "FW not ready.\n"); mei_reset(dev, 1); @@ -465,14 +494,9 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) if (mei_hw_is_ready(dev)) { dev_dbg(&dev->pdev->dev, "we need to start the dev.\n"); - mei_host_set_ready(dev); + dev->recvd_hw_ready = true; + wake_up_interruptible(&dev->wait_hw_ready); - dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n"); - /* link is established * start sending messages. */ - - dev->dev_state = MEI_DEV_INIT_CLIENTS; - - mei_hbm_start_req(dev); mutex_unlock(&dev->device_lock); return IRQ_HANDLED; } else { @@ -499,44 +523,20 @@ end: dev_dbg(&dev->pdev->dev, "end of bottom half function.\n"); dev->hbuf_is_ready = mei_hbuf_is_ready(dev); - bus_message_received = false; - if (dev->recvd_msg && waitqueue_active(&dev->wait_recvd_msg)) { - dev_dbg(&dev->pdev->dev, "received waiting bus message\n"); - bus_message_received = true; - } mutex_unlock(&dev->device_lock); - if (bus_message_received) { - dev_dbg(&dev->pdev->dev, "wake up dev->wait_recvd_msg\n"); - wake_up_interruptible(&dev->wait_recvd_msg); - bus_message_received = false; - } - if (list_empty(&complete_list.list)) - return IRQ_HANDLED; + mei_irq_compl_handler(dev, &complete_list); - list_for_each_entry_safe(cb_pos, cb_next, &complete_list.list, list) { - cl = cb_pos->cl; - list_del(&cb_pos->list); - if (cl) { - if (cl != &dev->iamthif_cl) { - dev_dbg(&dev->pdev->dev, "completing call back.\n"); - mei_irq_complete_handler(cl, cb_pos); - cb_pos = NULL; - } else if (cl == &dev->iamthif_cl) { - mei_amthif_complete(dev, cb_pos); - } - } - } return IRQ_HANDLED; } static const struct mei_hw_ops mei_me_hw_ops = { - .host_set_ready = mei_me_host_set_ready, .host_is_ready = mei_me_host_is_ready, .hw_is_ready = mei_me_hw_is_ready, .hw_reset = mei_me_hw_reset, - .hw_config = mei_me_hw_config, + .hw_config = mei_me_hw_config, + .hw_start = mei_me_hw_start, .intr_clear = mei_me_intr_clear, .intr_enable = mei_me_intr_enable, @@ -571,14 +571,6 @@ struct mei_device *mei_me_dev_init(struct pci_dev *pdev) mei_device_init(dev); - INIT_LIST_HEAD(&dev->wd_cl.link); - INIT_LIST_HEAD(&dev->iamthif_cl.link); - mei_io_list_init(&dev->amthif_cmd_list); - mei_io_list_init(&dev->amthif_rd_complete_list); - - INIT_DELAYED_WORK(&dev->timer_work, mei_timer); - INIT_WORK(&dev->init_work, mei_host_client_init); - dev->ops = &mei_me_hw_ops; dev->pdev = pdev; diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h index 8518d3eeb838..80bd829fbd9a 100644 --- a/drivers/misc/mei/hw-me.h +++ b/drivers/misc/mei/hw-me.h @@ -36,12 +36,6 @@ struct mei_me_hw { struct mei_device *mei_me_dev_init(struct pci_dev *pdev); -/* get slots (dwords) from a message length + header (bytes) */ -static inline unsigned char mei_data2slots(size_t length) -{ - return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4); -} - irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id); irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id); diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 356179991a2e..713d89fedc46 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -14,6 +14,7 @@ * */ +#include <linux/export.h> #include <linux/pci.h> #include <linux/sched.h> #include <linux/wait.h> @@ -22,6 +23,7 @@ #include <linux/mei.h> #include "mei_dev.h" +#include "hbm.h" #include "client.h" const char *mei_dev_state_str(int state) @@ -31,9 +33,8 @@ const char *mei_dev_state_str(int state) MEI_DEV_STATE(INITIALIZING); MEI_DEV_STATE(INIT_CLIENTS); MEI_DEV_STATE(ENABLED); - MEI_DEV_STATE(RESETING); + MEI_DEV_STATE(RESETTING); MEI_DEV_STATE(DISABLED); - MEI_DEV_STATE(RECOVERING_FROM_RESET); MEI_DEV_STATE(POWER_DOWN); MEI_DEV_STATE(POWER_UP); default: @@ -46,7 +47,9 @@ void mei_device_init(struct mei_device *dev) { /* setup our list array */ INIT_LIST_HEAD(&dev->file_list); + INIT_LIST_HEAD(&dev->device_list); mutex_init(&dev->device_lock); + init_waitqueue_head(&dev->wait_hw_ready); init_waitqueue_head(&dev->wait_recvd_msg); init_waitqueue_head(&dev->wait_stop_wd); dev->dev_state = MEI_DEV_INITIALIZING; @@ -56,19 +59,27 @@ void mei_device_init(struct mei_device *dev) mei_io_list_init(&dev->write_waiting_list); mei_io_list_init(&dev->ctrl_wr_list); mei_io_list_init(&dev->ctrl_rd_list); + + INIT_DELAYED_WORK(&dev->timer_work, mei_timer); + INIT_WORK(&dev->init_work, mei_host_client_init); + + INIT_LIST_HEAD(&dev->wd_cl.link); + INIT_LIST_HEAD(&dev->iamthif_cl.link); + mei_io_list_init(&dev->amthif_cmd_list); + mei_io_list_init(&dev->amthif_rd_complete_list); + } +EXPORT_SYMBOL_GPL(mei_device_init); /** - * mei_hw_init - initializes host and fw to start work. + * mei_start - initializes host and fw to start work. * * @dev: the device structure * * returns 0 on success, <0 on failure. */ -int mei_hw_init(struct mei_device *dev) +int mei_start(struct mei_device *dev) { - int ret = 0; - mutex_lock(&dev->device_lock); /* acknowledge interrupt and stop interupts */ @@ -76,29 +87,15 @@ int mei_hw_init(struct mei_device *dev) mei_hw_config(dev); - dev->recvd_msg = false; dev_dbg(&dev->pdev->dev, "reset in start the mei device.\n"); mei_reset(dev, 1); - /* wait for ME to turn on ME_RDY */ - if (!dev->recvd_msg) { - mutex_unlock(&dev->device_lock); - ret = wait_event_interruptible_timeout(dev->wait_recvd_msg, - dev->recvd_msg, - mei_secs_to_jiffies(MEI_INTEROP_TIMEOUT)); - mutex_lock(&dev->device_lock); - } - - if (ret <= 0 && !dev->recvd_msg) { - dev->dev_state = MEI_DEV_DISABLED; - dev_dbg(&dev->pdev->dev, - "wait_event_interruptible_timeout failed" - "on wait for ME to turn on ME_RDY.\n"); + if (mei_hbm_start_wait(dev)) { + dev_err(&dev->pdev->dev, "HBM haven't started"); goto err; } - if (!mei_host_is_ready(dev)) { dev_err(&dev->pdev->dev, "host is not ready.\n"); goto err; @@ -115,7 +112,6 @@ int mei_hw_init(struct mei_device *dev) goto err; } - dev->recvd_msg = false; dev_dbg(&dev->pdev->dev, "link layer has been established.\n"); mutex_unlock(&dev->device_lock); @@ -126,6 +122,7 @@ err: mutex_unlock(&dev->device_lock); return -ENODEV; } +EXPORT_SYMBOL_GPL(mei_start); /** * mei_reset - resets host and fw. @@ -137,9 +134,6 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled) { bool unexpected; - if (dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET) - return; - unexpected = (dev->dev_state != MEI_DEV_INITIALIZING && dev->dev_state != MEI_DEV_DISABLED && dev->dev_state != MEI_DEV_POWER_DOWN && @@ -147,11 +141,12 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled) mei_hw_reset(dev, interrupts_enabled); + dev->hbm_state = MEI_HBM_IDLE; if (dev->dev_state != MEI_DEV_INITIALIZING) { if (dev->dev_state != MEI_DEV_DISABLED && dev->dev_state != MEI_DEV_POWER_DOWN) - dev->dev_state = MEI_DEV_RESETING; + dev->dev_state = MEI_DEV_RESETTING; mei_cl_all_disconnect(dev); @@ -176,12 +171,27 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled) dev_warn(&dev->pdev->dev, "unexpected reset: dev_state = %s\n", mei_dev_state_str(dev->dev_state)); + if (!interrupts_enabled) { + dev_dbg(&dev->pdev->dev, "intr not enabled end of reset\n"); + return; + } + + mei_hw_start(dev); + + dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n"); + /* link is established * start sending messages. */ + + dev->dev_state = MEI_DEV_INIT_CLIENTS; + + mei_hbm_start_req(dev); + /* wake up all readings so they can be interrupted */ mei_cl_all_read_wakeup(dev); /* remove all waiting requests */ mei_cl_all_write_clear(dev); } +EXPORT_SYMBOL_GPL(mei_reset); void mei_stop(struct mei_device *dev) { @@ -193,14 +203,18 @@ void mei_stop(struct mei_device *dev) mei_wd_stop(dev); + mei_nfc_host_exit(); + dev->dev_state = MEI_DEV_POWER_DOWN; mei_reset(dev, 0); mutex_unlock(&dev->device_lock); flush_scheduled_work(); -} + mei_watchdog_unregister(dev); +} +EXPORT_SYMBOL_GPL(mei_stop); diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 3535b2676c97..1473cfdbc426 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -15,6 +15,7 @@ */ +#include <linux/export.h> #include <linux/pci.h> #include <linux/kthread.h> #include <linux/interrupt.h> @@ -30,103 +31,153 @@ /** - * mei_complete_handler - processes completed operation. + * mei_cl_complete_handler - processes completed operation for a client * * @cl: private data of the file object. - * @cb_pos: callback block. + * @cb: callback block. */ -void mei_irq_complete_handler(struct mei_cl *cl, struct mei_cl_cb *cb_pos) +static void mei_cl_complete_handler(struct mei_cl *cl, struct mei_cl_cb *cb) { - if (cb_pos->fop_type == MEI_FOP_WRITE) { - mei_io_cb_free(cb_pos); - cb_pos = NULL; + if (cb->fop_type == MEI_FOP_WRITE) { + mei_io_cb_free(cb); + cb = NULL; cl->writing_state = MEI_WRITE_COMPLETE; if (waitqueue_active(&cl->tx_wait)) wake_up_interruptible(&cl->tx_wait); - } else if (cb_pos->fop_type == MEI_FOP_READ && + } else if (cb->fop_type == MEI_FOP_READ && MEI_READING == cl->reading_state) { cl->reading_state = MEI_READ_COMPLETE; if (waitqueue_active(&cl->rx_wait)) wake_up_interruptible(&cl->rx_wait); + else + mei_cl_bus_rx_event(cl); + + } +} + +/** + * mei_irq_compl_handler - dispatch complete handelers + * for the completed callbacks + * + * @dev - mei device + * @compl_list - list of completed cbs + */ +void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *compl_list) +{ + struct mei_cl_cb *cb, *next; + struct mei_cl *cl; + + list_for_each_entry_safe(cb, next, &compl_list->list, list) { + cl = cb->cl; + list_del(&cb->list); + if (!cl) + continue; + dev_dbg(&dev->pdev->dev, "completing call back.\n"); + if (cl == &dev->iamthif_cl) + mei_amthif_complete(dev, cb); + else + mei_cl_complete_handler(cl, cb); } } +EXPORT_SYMBOL_GPL(mei_irq_compl_handler); /** - * _mei_irq_thread_state_ok - checks if mei header matches file private data + * mei_cl_hbm_equal - check if hbm is addressed to the client * - * @cl: private data of the file object + * @cl: host client * @mei_hdr: header of mei client message * - * returns !=0 if matches, 0 if no match. + * returns true if matches, false otherwise + */ +static inline int mei_cl_hbm_equal(struct mei_cl *cl, + struct mei_msg_hdr *mei_hdr) +{ + return cl->host_client_id == mei_hdr->host_addr && + cl->me_client_id == mei_hdr->me_addr; +} +/** + * mei_cl_is_reading - checks if the client + is the one to read this message + * + * @cl: mei client + * @mei_hdr: header of mei message + * + * returns true on match and false otherwise */ -static int _mei_irq_thread_state_ok(struct mei_cl *cl, - struct mei_msg_hdr *mei_hdr) +static bool mei_cl_is_reading(struct mei_cl *cl, struct mei_msg_hdr *mei_hdr) { - return (cl->host_client_id == mei_hdr->host_addr && - cl->me_client_id == mei_hdr->me_addr && + return mei_cl_hbm_equal(cl, mei_hdr) && cl->state == MEI_FILE_CONNECTED && - MEI_READ_COMPLETE != cl->reading_state); + cl->reading_state != MEI_READ_COMPLETE; } /** - * mei_irq_thread_read_client_message - bottom half read routine after ISR to - * handle the read mei client message data processing. + * mei_irq_read_client_message - process client message * - * @complete_list: An instance of our list structure * @dev: the device structure * @mei_hdr: header of mei client message + * @complete_list: An instance of our list structure * * returns 0 on success, <0 on failure. */ -static int mei_irq_thread_read_client_message(struct mei_cl_cb *complete_list, - struct mei_device *dev, - struct mei_msg_hdr *mei_hdr) +static int mei_cl_irq_read_msg(struct mei_device *dev, + struct mei_msg_hdr *mei_hdr, + struct mei_cl_cb *complete_list) { struct mei_cl *cl; - struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL; + struct mei_cl_cb *cb, *next; unsigned char *buffer = NULL; - dev_dbg(&dev->pdev->dev, "start client msg\n"); - if (list_empty(&dev->read_list.list)) - goto quit; + list_for_each_entry_safe(cb, next, &dev->read_list.list, list) { + cl = cb->cl; + if (!cl || !mei_cl_is_reading(cl, mei_hdr)) + continue; - list_for_each_entry_safe(cb_pos, cb_next, &dev->read_list.list, list) { - cl = cb_pos->cl; - if (cl && _mei_irq_thread_state_ok(cl, mei_hdr)) { - cl->reading_state = MEI_READING; - buffer = cb_pos->response_buffer.data + cb_pos->buf_idx; + cl->reading_state = MEI_READING; - if (cb_pos->response_buffer.size < - mei_hdr->length + cb_pos->buf_idx) { - dev_dbg(&dev->pdev->dev, "message overflow.\n"); - list_del(&cb_pos->list); + if (cb->response_buffer.size == 0 || + cb->response_buffer.data == NULL) { + dev_err(&dev->pdev->dev, "response buffer is not allocated.\n"); + list_del(&cb->list); + return -ENOMEM; + } + + if (cb->response_buffer.size < mei_hdr->length + cb->buf_idx) { + dev_dbg(&dev->pdev->dev, "message overflow. size %d len %d idx %ld\n", + cb->response_buffer.size, + mei_hdr->length, cb->buf_idx); + buffer = krealloc(cb->response_buffer.data, + mei_hdr->length + cb->buf_idx, + GFP_KERNEL); + + if (!buffer) { + dev_err(&dev->pdev->dev, "allocation failed.\n"); + list_del(&cb->list); return -ENOMEM; } - if (buffer) - mei_read_slots(dev, buffer, mei_hdr->length); - - cb_pos->buf_idx += mei_hdr->length; - if (mei_hdr->msg_complete) { - cl->status = 0; - list_del(&cb_pos->list); - dev_dbg(&dev->pdev->dev, - "completed read H cl = %d, ME cl = %d, length = %lu\n", - cl->host_client_id, - cl->me_client_id, - cb_pos->buf_idx); - - list_add_tail(&cb_pos->list, - &complete_list->list); - } - - break; + cb->response_buffer.data = buffer; + cb->response_buffer.size = + mei_hdr->length + cb->buf_idx; } + buffer = cb->response_buffer.data + cb->buf_idx; + mei_read_slots(dev, buffer, mei_hdr->length); + + cb->buf_idx += mei_hdr->length; + if (mei_hdr->msg_complete) { + cl->status = 0; + list_del(&cb->list); + dev_dbg(&dev->pdev->dev, "completed read H cl = %d, ME cl = %d, length = %lu\n", + cl->host_client_id, + cl->me_client_id, + cb->buf_idx); + list_add_tail(&cb->list, &complete_list->list); + } + break; } -quit: dev_dbg(&dev->pdev->dev, "message read\n"); if (!buffer) { mei_read_slots(dev, dev->rd_msg_buf, mei_hdr->length); @@ -153,25 +204,27 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots, struct mei_cl *cl, struct mei_cl_cb *cmpl_list) { - if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_client_connect_request))) - return -EBADMSG; + u32 msg_slots = + mei_data2slots(sizeof(struct hbm_client_connect_request)); - *slots -= mei_data2slots(sizeof(struct hbm_client_connect_request)); + if (*slots < msg_slots) + return -EMSGSIZE; + + *slots -= msg_slots; if (mei_hbm_cl_disconnect_req(dev, cl)) { cl->status = 0; cb_pos->buf_idx = 0; list_move_tail(&cb_pos->list, &cmpl_list->list); - return -EMSGSIZE; - } else { - cl->state = MEI_FILE_DISCONNECTING; - cl->status = 0; - cb_pos->buf_idx = 0; - list_move_tail(&cb_pos->list, &dev->ctrl_rd_list.list); - cl->timer_count = MEI_CONNECT_TIMEOUT; + return -EIO; } + cl->state = MEI_FILE_DISCONNECTING; + cl->status = 0; + cb_pos->buf_idx = 0; + list_move_tail(&cb_pos->list, &dev->ctrl_rd_list.list); + cl->timer_count = MEI_CONNECT_TIMEOUT; + return 0; } @@ -192,14 +245,15 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots, struct mei_cl *cl, struct mei_cl_cb *cmpl_list) { - if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_flow_control))) { + u32 msg_slots = mei_data2slots(sizeof(struct hbm_flow_control)); + + if (*slots < msg_slots) { /* return the cancel routine */ list_del(&cb_pos->list); - return -EBADMSG; + return -EMSGSIZE; } - *slots -= mei_data2slots(sizeof(struct hbm_flow_control)); + *slots -= msg_slots; if (mei_hbm_cl_flow_control_req(dev, cl)) { cl->status = -ENODEV; @@ -229,15 +283,19 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots, struct mei_cl *cl, struct mei_cl_cb *cmpl_list) { - if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) + - sizeof(struct hbm_client_connect_request))) { + u32 msg_slots = + mei_data2slots(sizeof(struct hbm_client_connect_request)); + + if (*slots < msg_slots) { /* return the cancel routine */ list_del(&cb_pos->list); - return -EBADMSG; + return -EMSGSIZE; } + *slots -= msg_slots; + cl->state = MEI_FILE_CONNECTING; - *slots -= mei_data2slots(sizeof(struct hbm_client_connect_request)); + if (mei_hbm_cl_connect_req(dev, cl)) { cl->status = -ENODEV; cb_pos->buf_idx = 0; @@ -266,7 +324,7 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots, struct mei_msg_hdr mei_hdr; struct mei_cl *cl = cb->cl; size_t len = cb->request_buffer.size - cb->buf_idx; - size_t msg_slots = mei_data2slots(len); + u32 msg_slots = mei_data2slots(len); mei_hdr.host_addr = cl->host_client_id; mei_hdr.me_addr = cl->me_client_id; @@ -298,13 +356,14 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots, return -ENODEV; } - if (mei_cl_flow_ctrl_reduce(cl)) - return -ENODEV; cl->status = 0; cb->buf_idx += mei_hdr.length; - if (mei_hdr.msg_complete) + if (mei_hdr.msg_complete) { + if (mei_cl_flow_ctrl_reduce(cl)) + return -ENODEV; list_move_tail(&cb->list, &dev->write_waiting_list.list); + } return 0; } @@ -350,8 +409,7 @@ int mei_irq_read_handler(struct mei_device *dev, " client = %d, ME client = %d\n", cl_pos->host_client_id, cl_pos->me_client_id); - if (cl_pos->host_client_id == mei_hdr->host_addr && - cl_pos->me_client_id == mei_hdr->me_addr) + if (mei_cl_hbm_equal(cl_pos, mei_hdr)) break; } @@ -362,7 +420,7 @@ int mei_irq_read_handler(struct mei_device *dev, } } if (((*slots) * sizeof(u32)) < mei_hdr->length) { - dev_dbg(&dev->pdev->dev, + dev_err(&dev->pdev->dev, "we can't read the message slots =%08x.\n", *slots); /* we can't read the message */ @@ -378,20 +436,19 @@ int mei_irq_read_handler(struct mei_device *dev, } else if (mei_hdr->host_addr == dev->iamthif_cl.host_client_id && (MEI_FILE_CONNECTED == dev->iamthif_cl.state) && (dev->iamthif_state == MEI_IAMTHIF_READING)) { - dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_iamthif_message.\n"); + dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_iamthif_message.\n"); dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr)); - ret = mei_amthif_irq_read_message(cmpl_list, dev, mei_hdr); + ret = mei_amthif_irq_read_msg(dev, mei_hdr, cmpl_list); if (ret) goto end; } else { - dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_client_message.\n"); - ret = mei_irq_thread_read_client_message(cmpl_list, - dev, mei_hdr); + dev_dbg(&dev->pdev->dev, "call mei_cl_irq_read_msg.\n"); + dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr)); + ret = mei_cl_irq_read_msg(dev, mei_hdr, cmpl_list); if (ret) goto end; - } /* reset the number of slots and header */ @@ -400,7 +457,7 @@ int mei_irq_read_handler(struct mei_device *dev, if (*slots == -EOVERFLOW) { /* overflow - reset */ - dev_dbg(&dev->pdev->dev, "resetting due to slots overflow.\n"); + dev_err(&dev->pdev->dev, "resetting due to slots overflow.\n"); /* set the event since message has been read */ ret = -ERANGE; goto end; @@ -408,6 +465,7 @@ int mei_irq_read_handler(struct mei_device *dev, end: return ret; } +EXPORT_SYMBOL_GPL(mei_irq_read_handler); /** @@ -419,8 +477,7 @@ end: * * returns 0 on success, <0 on failure. */ -int mei_irq_write_handler(struct mei_device *dev, - struct mei_cl_cb *cmpl_list) +int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list) { struct mei_cl *cl; @@ -559,6 +616,7 @@ int mei_irq_write_handler(struct mei_device *dev, } return 0; } +EXPORT_SYMBOL_GPL(mei_irq_write_handler); @@ -586,8 +644,8 @@ void mei_timer(struct work_struct *work) if (dev->dev_state == MEI_DEV_INIT_CLIENTS) { if (dev->init_clients_timer) { if (--dev->init_clients_timer == 0) { - dev_dbg(&dev->pdev->dev, "IMEI reset due to init clients timeout ,init clients state = %d.\n", - dev->init_clients_state); + dev_err(&dev->pdev->dev, "reset: init clients timeout hbm_state = %d.\n", + dev->hbm_state); mei_reset(dev, 1); } } @@ -598,7 +656,7 @@ void mei_timer(struct work_struct *work) list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) { if (cl_pos->timer_count) { if (--cl_pos->timer_count == 0) { - dev_dbg(&dev->pdev->dev, "HECI reset due to connect/disconnect timeout.\n"); + dev_err(&dev->pdev->dev, "reset: connect/disconnect timeout.\n"); mei_reset(dev, 1); goto out; } @@ -607,7 +665,7 @@ void mei_timer(struct work_struct *work) if (dev->iamthif_stall_timer) { if (--dev->iamthif_stall_timer == 0) { - dev_dbg(&dev->pdev->dev, "resetting because of hang to amthi.\n"); + dev_err(&dev->pdev->dev, "reset: amthif hanged.\n"); mei_reset(dev, 1); dev->iamthif_msg_buf_size = 0; dev->iamthif_msg_buf_index = 0; diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 903f809b21f7..7c44c8dbae42 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -48,7 +48,7 @@ * * @inode: pointer to inode structure * @file: pointer to file structure - * + e * returns 0 on success, <0 on error */ static int mei_open(struct inode *inode, struct file *file) @@ -244,7 +244,7 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, goto out; } - err = mei_cl_read_start(cl); + err = mei_cl_read_start(cl, length); if (err && err != -EBUSY) { dev_dbg(&dev->pdev->dev, "mei start read failure with status = %d\n", err); @@ -292,9 +292,8 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, } /* now copy the data to user space */ copy_buffer: - dev_dbg(&dev->pdev->dev, "cb->response_buffer size - %d\n", - cb->response_buffer.size); - dev_dbg(&dev->pdev->dev, "cb->buf_idx - %lu\n", cb->buf_idx); + dev_dbg(&dev->pdev->dev, "buf.size = %d buf.idx= %ld\n", + cb->response_buffer.size, cb->buf_idx); if (length == 0 || ubuf == NULL || *offset > cb->buf_idx) { rets = -EMSGSIZE; goto free; @@ -342,11 +341,10 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf, { struct mei_cl *cl = file->private_data; struct mei_cl_cb *write_cb = NULL; - struct mei_msg_hdr mei_hdr; struct mei_device *dev; unsigned long timeout = 0; int rets; - int i; + int id; if (WARN_ON(!cl || !cl->dev)) return -ENODEV; @@ -357,24 +355,24 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf, if (dev->dev_state != MEI_DEV_ENABLED) { rets = -ENODEV; - goto err; + goto out; } - i = mei_me_cl_by_id(dev, cl->me_client_id); - if (i < 0) { + id = mei_me_cl_by_id(dev, cl->me_client_id); + if (id < 0) { rets = -ENODEV; - goto err; + goto out; } - if (length > dev->me_clients[i].props.max_msg_length || length <= 0) { + if (length > dev->me_clients[id].props.max_msg_length || length <= 0) { rets = -EMSGSIZE; - goto err; + goto out; } if (cl->state != MEI_FILE_CONNECTED) { - rets = -ENODEV; dev_err(&dev->pdev->dev, "host client = %d, is not connected to ME client = %d", cl->host_client_id, cl->me_client_id); - goto err; + rets = -ENODEV; + goto out; } if (cl == &dev->iamthif_cl) { write_cb = mei_amthif_find_read_list_entry(dev, file); @@ -412,17 +410,15 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf, if (!write_cb) { dev_err(&dev->pdev->dev, "write cb allocation failed\n"); rets = -ENOMEM; - goto err; + goto out; } rets = mei_io_cb_alloc_req_buf(write_cb, length); if (rets) - goto err; - - dev_dbg(&dev->pdev->dev, "cb request size = %zd\n", length); + goto out; rets = copy_from_user(write_cb->request_buffer.data, ubuf, length); if (rets) - goto err; + goto out; cl->sm_state = 0; if (length == 4 && @@ -440,65 +436,17 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf, if (rets) { dev_err(&dev->pdev->dev, "amthif write failed with status = %d\n", rets); - goto err; + goto out; } mutex_unlock(&dev->device_lock); return length; } - write_cb->fop_type = MEI_FOP_WRITE; - - dev_dbg(&dev->pdev->dev, "host client = %d, ME client = %d\n", - cl->host_client_id, cl->me_client_id); - rets = mei_cl_flow_ctrl_creds(cl); - if (rets < 0) - goto err; - - if (rets == 0 || !dev->hbuf_is_ready) { - write_cb->buf_idx = 0; - mei_hdr.msg_complete = 0; - cl->writing_state = MEI_WRITING; - goto out; - } - - dev->hbuf_is_ready = false; - if (length > mei_hbuf_max_len(dev)) { - mei_hdr.length = mei_hbuf_max_len(dev); - mei_hdr.msg_complete = 0; - } else { - mei_hdr.length = length; - mei_hdr.msg_complete = 1; - } - mei_hdr.host_addr = cl->host_client_id; - mei_hdr.me_addr = cl->me_client_id; - mei_hdr.reserved = 0; - - dev_dbg(&dev->pdev->dev, "write " MEI_HDR_FMT "\n", - MEI_HDR_PRM(&mei_hdr)); - if (mei_write_message(dev, &mei_hdr, write_cb->request_buffer.data)) { - rets = -ENODEV; - goto err; - } - cl->writing_state = MEI_WRITING; - write_cb->buf_idx = mei_hdr.length; - + rets = mei_cl_write(cl, write_cb, false); out: - if (mei_hdr.msg_complete) { - if (mei_cl_flow_ctrl_reduce(cl)) { - rets = -ENODEV; - goto err; - } - list_add_tail(&write_cb->list, &dev->write_waiting_list.list); - } else { - list_add_tail(&write_cb->list, &dev->write_list.list); - } - mutex_unlock(&dev->device_lock); - return length; - -err: - mutex_unlock(&dev->device_lock); - mei_io_cb_free(write_cb); + if (rets < 0) + mei_io_cb_free(write_cb); return rets; } @@ -753,17 +701,44 @@ static struct miscdevice mei_misc_device = { .minor = MISC_DYNAMIC_MINOR, }; -int mei_register(struct device *dev) + +int mei_register(struct mei_device *dev) { - mei_misc_device.parent = dev; - return misc_register(&mei_misc_device); + int ret; + mei_misc_device.parent = &dev->pdev->dev; + ret = misc_register(&mei_misc_device); + if (ret) + return ret; + + if (mei_dbgfs_register(dev, mei_misc_device.name)) + dev_err(&dev->pdev->dev, "cannot register debugfs\n"); + + return 0; } +EXPORT_SYMBOL_GPL(mei_register); -void mei_deregister(void) +void mei_deregister(struct mei_device *dev) { + mei_dbgfs_deregister(dev); misc_deregister(&mei_misc_device); mei_misc_device.parent = NULL; } +EXPORT_SYMBOL_GPL(mei_deregister); + +static int __init mei_init(void) +{ + return mei_cl_bus_init(); +} + +static void __exit mei_exit(void) +{ + mei_cl_bus_exit(); +} + +module_init(mei_init); +module_exit(mei_exit); +MODULE_AUTHOR("Intel Corporation"); +MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 97873812e33b..4de5140e7379 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -21,9 +21,11 @@ #include <linux/watchdog.h> #include <linux/poll.h> #include <linux/mei.h> +#include <linux/mei_cl_bus.h> #include "hw.h" #include "hw-me-regs.h" +#include "hbm.h" /* * watch dog definition @@ -95,22 +97,14 @@ enum mei_dev_state { MEI_DEV_INITIALIZING = 0, MEI_DEV_INIT_CLIENTS, MEI_DEV_ENABLED, - MEI_DEV_RESETING, + MEI_DEV_RESETTING, MEI_DEV_DISABLED, - MEI_DEV_RECOVERING_FROM_RESET, MEI_DEV_POWER_DOWN, MEI_DEV_POWER_UP }; const char *mei_dev_state_str(int state); -/* init clients states*/ -enum mei_init_clients_states { - MEI_START_MESSAGE = 0, - MEI_ENUM_CLIENTS_MESSAGE, - MEI_CLIENT_PROPERTIES_MESSAGE -}; - enum iamthif_states { MEI_IAMTHIF_IDLE, MEI_IAMTHIF_WRITING, @@ -153,7 +147,7 @@ enum mei_cb_file_ops { /* * Intel MEI message data struct */ -struct mei_message_data { +struct mei_msg_data { u32 size; unsigned char *data; }; @@ -184,8 +178,8 @@ struct mei_cl_cb { struct list_head list; struct mei_cl *cl; enum mei_cb_file_ops fop_type; - struct mei_message_data request_buffer; - struct mei_message_data response_buffer; + struct mei_msg_data request_buffer; + struct mei_msg_data response_buffer; unsigned long buf_idx; unsigned long read_time; struct file *file_object; @@ -209,15 +203,20 @@ struct mei_cl { enum mei_file_transaction_states writing_state; int sm_state; struct mei_cl_cb *read_cb; + + /* MEI CL bus data */ + struct mei_cl_device *device; + struct list_head device_link; + uuid_le device_uuid; }; /** struct mei_hw_ops * - * @host_set_ready - notify FW that host side is ready * @host_is_ready - query for host readiness * @hw_is_ready - query if hw is ready * @hw_reset - reset hw + * @hw_start - start hw after reset * @hw_config - configure hw * @intr_clear - clear pending interrupts @@ -237,11 +236,11 @@ struct mei_cl { */ struct mei_hw_ops { - void (*host_set_ready) (struct mei_device *dev); bool (*host_is_ready) (struct mei_device *dev); bool (*hw_is_ready) (struct mei_device *dev); void (*hw_reset) (struct mei_device *dev, bool enable); + int (*hw_start) (struct mei_device *dev); void (*hw_config) (struct mei_device *dev); void (*intr_clear) (struct mei_device *dev); @@ -263,9 +262,77 @@ struct mei_hw_ops { unsigned char *buf, unsigned long len); }; +/* MEI bus API*/ + +/** + * struct mei_cl_ops - MEI CL device ops + * This structure allows ME host clients to implement technology + * specific operations. + * + * @enable: Enable an MEI CL device. Some devices require specific + * HECI commands to initialize completely. + * @disable: Disable an MEI CL device. + * @send: Tx hook for the device. This allows ME host clients to trap + * the device driver buffers before actually physically + * pushing it to the ME. + * @recv: Rx hook for the device. This allows ME host clients to trap the + * ME buffers before forwarding them to the device driver. + */ +struct mei_cl_ops { + int (*enable)(struct mei_cl_device *device); + int (*disable)(struct mei_cl_device *device); + int (*send)(struct mei_cl_device *device, u8 *buf, size_t length); + int (*recv)(struct mei_cl_device *device, u8 *buf, size_t length); +}; + +struct mei_cl_device *mei_cl_add_device(struct mei_device *dev, + uuid_le uuid, char *name, + struct mei_cl_ops *ops); +void mei_cl_remove_device(struct mei_cl_device *device); + +int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length); +int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length); +int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length); +void mei_cl_bus_rx_event(struct mei_cl *cl); +int mei_cl_bus_init(void); +void mei_cl_bus_exit(void); + + +/** + * struct mei_cl_device - MEI device handle + * An mei_cl_device pointer is returned from mei_add_device() + * and links MEI bus clients to their actual ME host client pointer. + * Drivers for MEI devices will get an mei_cl_device pointer + * when being probed and shall use it for doing ME bus I/O. + * + * @dev: linux driver model device pointer + * @uuid: me client uuid + * @cl: mei client + * @ops: ME transport ops + * @event_cb: Drivers register this callback to get asynchronous ME + * events (e.g. Rx buffer pending) notifications. + * @events: Events bitmask sent to the driver. + * @priv_data: client private data + */ +struct mei_cl_device { + struct device dev; + + struct mei_cl *cl; + + const struct mei_cl_ops *ops; + + struct work_struct event_work; + mei_cl_event_cb_t event_cb; + void *event_context; + unsigned long events; + + void *priv_data; +}; + /** * struct mei_device - MEI private device struct + * @hbm_state - state of host bus message protocol * @mem_addr - mem mapped base register address * @hbuf_depth - depth of hardware host/write buffer is slots @@ -296,11 +363,12 @@ struct mei_device { */ struct mutex device_lock; /* device lock */ struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */ - bool recvd_msg; + bool recvd_hw_ready; /* * waiting queue for receive message from FW */ + wait_queue_head_t wait_hw_ready; wait_queue_head_t wait_recvd_msg; wait_queue_head_t wait_stop_wd; @@ -308,7 +376,7 @@ struct mei_device { * mei device states */ enum mei_dev_state dev_state; - enum mei_init_clients_states init_clients_state; + enum mei_hbm_state hbm_state; u16 init_clients_timer; unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */ @@ -365,6 +433,14 @@ struct mei_device { struct work_struct init_work; + /* List of bus devices */ + struct list_head device_list; + +#if IS_ENABLED(CONFIG_DEBUG_FS) + struct dentry *dbgfs_dir; +#endif /* CONFIG_DEBUG_FS */ + + const struct mei_hw_ops *ops; char hw[0] __aligned(sizeof(void *)); }; @@ -374,13 +450,23 @@ static inline unsigned long mei_secs_to_jiffies(unsigned long sec) return msecs_to_jiffies(sec * MSEC_PER_SEC); } +/** + * mei_data2slots - get slots - number of (dwords) from a message length + * + size of the mei header + * @length - size of the messages in bytes + * returns - number of slots + */ +static inline u32 mei_data2slots(size_t length) +{ + return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4); +} /* * mei init function prototypes */ void mei_device_init(struct mei_device *dev); void mei_reset(struct mei_device *dev, int interrupts); -int mei_hw_init(struct mei_device *dev); +int mei_start(struct mei_device *dev); void mei_stop(struct mei_device *dev); /* @@ -392,8 +478,7 @@ int mei_irq_read_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list, s32 *slots); int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); - -void mei_irq_complete_handler(struct mei_cl *cl, struct mei_cl_cb *cb_pos); +void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); /* * AMTHIF - AMT Host Interface Functions @@ -417,6 +502,25 @@ struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev, void mei_amthif_run_next_cmd(struct mei_device *dev); +int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots, + struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list); + +void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb); +int mei_amthif_irq_read_msg(struct mei_device *dev, + struct mei_msg_hdr *mei_hdr, + struct mei_cl_cb *complete_list); +int mei_amthif_irq_read(struct mei_device *dev, s32 *slots); + +/* + * NFC functions + */ +int mei_nfc_host_init(struct mei_device *dev); +void mei_nfc_host_exit(void); + +/* + * NFC Client UUID + */ +extern const uuid_le mei_nfc_guid; int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots, struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list); @@ -455,6 +559,11 @@ static inline void mei_hw_reset(struct mei_device *dev, bool enable) dev->ops->hw_reset(dev, enable); } +static inline void mei_hw_start(struct mei_device *dev) +{ + dev->ops->hw_start(dev); +} + static inline void mei_clear_interrupts(struct mei_device *dev) { dev->ops->intr_clear(dev); @@ -470,10 +579,6 @@ static inline void mei_disable_interrupts(struct mei_device *dev) dev->ops->intr_disable(dev); } -static inline void mei_host_set_ready(struct mei_device *dev) -{ - dev->ops->host_set_ready(dev); -} static inline bool mei_host_is_ready(struct mei_device *dev) { return dev->ops->host_is_ready(dev); @@ -521,8 +626,19 @@ static inline int mei_count_full_read_slots(struct mei_device *dev) return dev->ops->rdbuf_full_slots(dev); } -int mei_register(struct device *dev); -void mei_deregister(void); +#if IS_ENABLED(CONFIG_DEBUG_FS) +int mei_dbgfs_register(struct mei_device *dev, const char *name); +void mei_dbgfs_deregister(struct mei_device *dev); +#else +static inline int mei_dbgfs_register(struct mei_device *dev, const char *name) +{ + return 0; +} +static inline void mei_dbgfs_deregister(struct mei_device *dev) {} +#endif /* CONFIG_DEBUG_FS */ + +int mei_register(struct mei_device *dev); +void mei_deregister(struct mei_device *dev); #define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d comp=%1d" #define MEI_HDR_PRM(hdr) \ diff --git a/drivers/misc/mei/nfc.c b/drivers/misc/mei/nfc.c new file mode 100644 index 000000000000..3adf8a70f26e --- /dev/null +++ b/drivers/misc/mei/nfc.c @@ -0,0 +1,554 @@ +/* + * + * Intel Management Engine Interface (Intel MEI) Linux driver + * Copyright (c) 2003-2013, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <linux/pci.h> +#include <linux/mei_cl_bus.h> + +#include "mei_dev.h" +#include "client.h" + +struct mei_nfc_cmd { + u8 command; + u8 status; + u16 req_id; + u32 reserved; + u16 data_size; + u8 sub_command; + u8 data[]; +} __packed; + +struct mei_nfc_reply { + u8 command; + u8 status; + u16 req_id; + u32 reserved; + u16 data_size; + u8 sub_command; + u8 reply_status; + u8 data[]; +} __packed; + +struct mei_nfc_if_version { + u8 radio_version_sw[3]; + u8 reserved[3]; + u8 radio_version_hw[3]; + u8 i2c_addr; + u8 fw_ivn; + u8 vendor_id; + u8 radio_type; +} __packed; + +struct mei_nfc_connect { + u8 fw_ivn; + u8 vendor_id; +} __packed; + +struct mei_nfc_connect_resp { + u8 fw_ivn; + u8 vendor_id; + u16 me_major; + u16 me_minor; + u16 me_hotfix; + u16 me_build; +} __packed; + +struct mei_nfc_hci_hdr { + u8 cmd; + u8 status; + u16 req_id; + u32 reserved; + u16 data_size; +} __packed; + +#define MEI_NFC_CMD_MAINTENANCE 0x00 +#define MEI_NFC_CMD_HCI_SEND 0x01 +#define MEI_NFC_CMD_HCI_RECV 0x02 + +#define MEI_NFC_SUBCMD_CONNECT 0x00 +#define MEI_NFC_SUBCMD_IF_VERSION 0x01 + +#define MEI_NFC_HEADER_SIZE 10 + +/** mei_nfc_dev - NFC mei device + * + * @cl: NFC host client + * @cl_info: NFC info host client + * @init_work: perform connection to the info client + * @fw_ivn: NFC Intervace Version Number + * @vendor_id: NFC manufacturer ID + * @radio_type: NFC radio type + */ +struct mei_nfc_dev { + struct mei_cl *cl; + struct mei_cl *cl_info; + struct work_struct init_work; + wait_queue_head_t send_wq; + u8 fw_ivn; + u8 vendor_id; + u8 radio_type; + char *bus_name; + + u16 req_id; + u16 recv_req_id; +}; + +static struct mei_nfc_dev nfc_dev; + +/* UUIDs for NFC F/W clients */ +const uuid_le mei_nfc_guid = UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, + 0x94, 0xd4, 0x50, 0x26, + 0x67, 0x23, 0x77, 0x5c); + +static const uuid_le mei_nfc_info_guid = UUID_LE(0xd2de1625, 0x382d, 0x417d, + 0x48, 0xa4, 0xef, 0xab, + 0xba, 0x8a, 0x12, 0x06); + +/* Vendors */ +#define MEI_NFC_VENDOR_INSIDE 0x00 +#define MEI_NFC_VENDOR_NXP 0x01 + +/* Radio types */ +#define MEI_NFC_VENDOR_INSIDE_UREAD 0x00 +#define MEI_NFC_VENDOR_NXP_PN544 0x01 + +static void mei_nfc_free(struct mei_nfc_dev *ndev) +{ + if (ndev->cl) { + list_del(&ndev->cl->device_link); + mei_cl_unlink(ndev->cl); + kfree(ndev->cl); + } + + if (ndev->cl_info) { + list_del(&ndev->cl_info->device_link); + mei_cl_unlink(ndev->cl_info); + kfree(ndev->cl_info); + } +} + +static int mei_nfc_build_bus_name(struct mei_nfc_dev *ndev) +{ + struct mei_device *dev; + + if (!ndev->cl) + return -ENODEV; + + dev = ndev->cl->dev; + + switch (ndev->vendor_id) { + case MEI_NFC_VENDOR_INSIDE: + switch (ndev->radio_type) { + case MEI_NFC_VENDOR_INSIDE_UREAD: + ndev->bus_name = "microread"; + return 0; + + default: + dev_err(&dev->pdev->dev, "Unknow radio type 0x%x\n", + ndev->radio_type); + + return -EINVAL; + } + + case MEI_NFC_VENDOR_NXP: + switch (ndev->radio_type) { + case MEI_NFC_VENDOR_NXP_PN544: + ndev->bus_name = "pn544"; + return 0; + default: + dev_err(&dev->pdev->dev, "Unknow radio type 0x%x\n", + ndev->radio_type); + + return -EINVAL; + } + + default: + dev_err(&dev->pdev->dev, "Unknow vendor ID 0x%x\n", + ndev->vendor_id); + + return -EINVAL; + } + + return 0; +} + +static int mei_nfc_connect(struct mei_nfc_dev *ndev) +{ + struct mei_device *dev; + struct mei_cl *cl; + struct mei_nfc_cmd *cmd, *reply; + struct mei_nfc_connect *connect; + struct mei_nfc_connect_resp *connect_resp; + size_t connect_length, connect_resp_length; + int bytes_recv, ret; + + cl = ndev->cl; + dev = cl->dev; + + connect_length = sizeof(struct mei_nfc_cmd) + + sizeof(struct mei_nfc_connect); + + connect_resp_length = sizeof(struct mei_nfc_cmd) + + sizeof(struct mei_nfc_connect_resp); + + cmd = kzalloc(connect_length, GFP_KERNEL); + if (!cmd) + return -ENOMEM; + connect = (struct mei_nfc_connect *)cmd->data; + + reply = kzalloc(connect_resp_length, GFP_KERNEL); + if (!reply) { + kfree(cmd); + return -ENOMEM; + } + + connect_resp = (struct mei_nfc_connect_resp *)reply->data; + + cmd->command = MEI_NFC_CMD_MAINTENANCE; + cmd->data_size = 3; + cmd->sub_command = MEI_NFC_SUBCMD_CONNECT; + connect->fw_ivn = ndev->fw_ivn; + connect->vendor_id = ndev->vendor_id; + + ret = __mei_cl_send(cl, (u8 *)cmd, connect_length); + if (ret < 0) { + dev_err(&dev->pdev->dev, "Could not send connect cmd\n"); + goto err; + } + + bytes_recv = __mei_cl_recv(cl, (u8 *)reply, connect_resp_length); + if (bytes_recv < 0) { + dev_err(&dev->pdev->dev, "Could not read connect response\n"); + ret = bytes_recv; + goto err; + } + + dev_info(&dev->pdev->dev, "IVN 0x%x Vendor ID 0x%x\n", + connect_resp->fw_ivn, connect_resp->vendor_id); + + dev_info(&dev->pdev->dev, "ME FW %d.%d.%d.%d\n", + connect_resp->me_major, connect_resp->me_minor, + connect_resp->me_hotfix, connect_resp->me_build); + + ret = 0; + +err: + kfree(reply); + kfree(cmd); + + return ret; +} + +static int mei_nfc_if_version(struct mei_nfc_dev *ndev) +{ + struct mei_device *dev; + struct mei_cl *cl; + + struct mei_nfc_cmd cmd; + struct mei_nfc_reply *reply = NULL; + struct mei_nfc_if_version *version; + size_t if_version_length; + int bytes_recv, ret; + + cl = ndev->cl_info; + dev = cl->dev; + + memset(&cmd, 0, sizeof(struct mei_nfc_cmd)); + cmd.command = MEI_NFC_CMD_MAINTENANCE; + cmd.data_size = 1; + cmd.sub_command = MEI_NFC_SUBCMD_IF_VERSION; + + ret = __mei_cl_send(cl, (u8 *)&cmd, sizeof(struct mei_nfc_cmd)); + if (ret < 0) { + dev_err(&dev->pdev->dev, "Could not send IF version cmd\n"); + return ret; + } + + /* to be sure on the stack we alloc memory */ + if_version_length = sizeof(struct mei_nfc_reply) + + sizeof(struct mei_nfc_if_version); + + reply = kzalloc(if_version_length, GFP_KERNEL); + if (!reply) + return -ENOMEM; + + bytes_recv = __mei_cl_recv(cl, (u8 *)reply, if_version_length); + if (bytes_recv < 0 || bytes_recv < sizeof(struct mei_nfc_reply)) { + dev_err(&dev->pdev->dev, "Could not read IF version\n"); + ret = -EIO; + goto err; + } + + version = (struct mei_nfc_if_version *)reply->data; + + ndev->fw_ivn = version->fw_ivn; + ndev->vendor_id = version->vendor_id; + ndev->radio_type = version->radio_type; + +err: + kfree(reply); + return ret; +} + +static int mei_nfc_enable(struct mei_cl_device *cldev) +{ + struct mei_device *dev; + struct mei_nfc_dev *ndev = &nfc_dev; + int ret; + + dev = ndev->cl->dev; + + ret = mei_nfc_connect(ndev); + if (ret < 0) { + dev_err(&dev->pdev->dev, "Could not connect to NFC"); + return ret; + } + + return 0; +} + +static int mei_nfc_disable(struct mei_cl_device *cldev) +{ + return 0; +} + +static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length) +{ + struct mei_device *dev; + struct mei_nfc_dev *ndev; + struct mei_nfc_hci_hdr *hdr; + u8 *mei_buf; + int err; + + ndev = (struct mei_nfc_dev *) cldev->priv_data; + dev = ndev->cl->dev; + + mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL); + if (!mei_buf) + return -ENOMEM; + + hdr = (struct mei_nfc_hci_hdr *) mei_buf; + hdr->cmd = MEI_NFC_CMD_HCI_SEND; + hdr->status = 0; + hdr->req_id = ndev->req_id; + hdr->reserved = 0; + hdr->data_size = length; + + memcpy(mei_buf + MEI_NFC_HEADER_SIZE, buf, length); + + err = __mei_cl_send(ndev->cl, mei_buf, length + MEI_NFC_HEADER_SIZE); + if (err < 0) + return err; + + kfree(mei_buf); + + if (!wait_event_interruptible_timeout(ndev->send_wq, + ndev->recv_req_id == ndev->req_id, HZ)) { + dev_err(&dev->pdev->dev, "NFC MEI command timeout\n"); + err = -ETIMEDOUT; + } else { + ndev->req_id++; + } + + return err; +} + +static int mei_nfc_recv(struct mei_cl_device *cldev, u8 *buf, size_t length) +{ + struct mei_nfc_dev *ndev; + struct mei_nfc_hci_hdr *hci_hdr; + int received_length; + + ndev = (struct mei_nfc_dev *)cldev->priv_data; + + received_length = __mei_cl_recv(ndev->cl, buf, length); + if (received_length < 0) + return received_length; + + hci_hdr = (struct mei_nfc_hci_hdr *) buf; + + if (hci_hdr->cmd == MEI_NFC_CMD_HCI_SEND) { + ndev->recv_req_id = hci_hdr->req_id; + wake_up(&ndev->send_wq); + + return 0; + } + + return received_length; +} + +static struct mei_cl_ops nfc_ops = { + .enable = mei_nfc_enable, + .disable = mei_nfc_disable, + .send = mei_nfc_send, + .recv = mei_nfc_recv, +}; + +static void mei_nfc_init(struct work_struct *work) +{ + struct mei_device *dev; + struct mei_cl_device *cldev; + struct mei_nfc_dev *ndev; + struct mei_cl *cl_info; + + ndev = container_of(work, struct mei_nfc_dev, init_work); + + cl_info = ndev->cl_info; + dev = cl_info->dev; + + mutex_lock(&dev->device_lock); + + if (mei_cl_connect(cl_info, NULL) < 0) { + mutex_unlock(&dev->device_lock); + dev_err(&dev->pdev->dev, + "Could not connect to the NFC INFO ME client"); + + goto err; + } + + mutex_unlock(&dev->device_lock); + + if (mei_nfc_if_version(ndev) < 0) { + dev_err(&dev->pdev->dev, "Could not get the NFC interfave version"); + + goto err; + } + + dev_info(&dev->pdev->dev, + "NFC MEI VERSION: IVN 0x%x Vendor ID 0x%x Type 0x%x\n", + ndev->fw_ivn, ndev->vendor_id, ndev->radio_type); + + mutex_lock(&dev->device_lock); + + if (mei_cl_disconnect(cl_info) < 0) { + mutex_unlock(&dev->device_lock); + dev_err(&dev->pdev->dev, + "Could not disconnect the NFC INFO ME client"); + + goto err; + } + + mutex_unlock(&dev->device_lock); + + if (mei_nfc_build_bus_name(ndev) < 0) { + dev_err(&dev->pdev->dev, + "Could not build the bus ID name\n"); + return; + } + + cldev = mei_cl_add_device(dev, mei_nfc_guid, ndev->bus_name, &nfc_ops); + if (!cldev) { + dev_err(&dev->pdev->dev, + "Could not add the NFC device to the MEI bus\n"); + + goto err; + } + + cldev->priv_data = ndev; + + + return; + +err: + mei_nfc_free(ndev); + + return; +} + + +int mei_nfc_host_init(struct mei_device *dev) +{ + struct mei_nfc_dev *ndev = &nfc_dev; + struct mei_cl *cl_info, *cl = NULL; + int i, ret; + + /* already initialzed */ + if (ndev->cl_info) + return 0; + + cl_info = mei_cl_allocate(dev); + cl = mei_cl_allocate(dev); + + if (!cl || !cl_info) { + ret = -ENOMEM; + goto err; + } + + /* check for valid client id */ + i = mei_me_cl_by_uuid(dev, &mei_nfc_info_guid); + if (i < 0) { + dev_info(&dev->pdev->dev, "nfc: failed to find the client\n"); + ret = -ENOENT; + goto err; + } + + cl_info->me_client_id = dev->me_clients[i].client_id; + + ret = mei_cl_link(cl_info, MEI_HOST_CLIENT_ID_ANY); + if (ret) + goto err; + + cl_info->device_uuid = mei_nfc_info_guid; + + list_add_tail(&cl_info->device_link, &dev->device_list); + + /* check for valid client id */ + i = mei_me_cl_by_uuid(dev, &mei_nfc_guid); + if (i < 0) { + dev_info(&dev->pdev->dev, "nfc: failed to find the client\n"); + ret = -ENOENT; + goto err; + } + + cl->me_client_id = dev->me_clients[i].client_id; + + ret = mei_cl_link(cl, MEI_HOST_CLIENT_ID_ANY); + if (ret) + goto err; + + cl->device_uuid = mei_nfc_guid; + + list_add_tail(&cl->device_link, &dev->device_list); + + ndev->cl_info = cl_info; + ndev->cl = cl; + ndev->req_id = 1; + + INIT_WORK(&ndev->init_work, mei_nfc_init); + init_waitqueue_head(&ndev->send_wq); + schedule_work(&ndev->init_work); + + return 0; + +err: + mei_nfc_free(ndev); + + return ret; +} + +void mei_nfc_host_exit(void) +{ + struct mei_nfc_dev *ndev = &nfc_dev; + + if (ndev->cl && ndev->cl->device) + mei_cl_remove_device(ndev->cl->device); + + mei_nfc_free(ndev); +} diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index b8b5c9c3ad03..88aec6a90ff4 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -47,7 +47,7 @@ static struct pci_dev *mei_pdev; /* mei_pci_tbl - PCI Device ID Table */ -static DEFINE_PCI_DEVICE_TABLE(mei_pci_tbl) = { +static DEFINE_PCI_DEVICE_TABLE(mei_me_pci_tbl) = { {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82946GZ)}, {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G35)}, {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82Q965)}, @@ -86,7 +86,7 @@ static DEFINE_PCI_DEVICE_TABLE(mei_pci_tbl) = { {0, } }; -MODULE_DEVICE_TABLE(pci, mei_pci_tbl); +MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); static DEFINE_MUTEX(mei_mutex); @@ -97,7 +97,7 @@ static DEFINE_MUTEX(mei_mutex); * * returns true if ME Interface is valid, false otherwise */ -static bool mei_quirk_probe(struct pci_dev *pdev, +static bool mei_me_quirk_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { u32 reg; @@ -119,7 +119,7 @@ static bool mei_quirk_probe(struct pci_dev *pdev, * * returns 0 on success, <0 on failure. */ -static int mei_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct mei_device *dev; struct mei_me_hw *hw; @@ -127,7 +127,7 @@ static int mei_probe(struct pci_dev *pdev, const struct pci_device_id *ent) mutex_lock(&mei_mutex); - if (!mei_quirk_probe(pdev, ent)) { + if (!mei_me_quirk_probe(pdev, ent)) { err = -ENODEV; goto end; } @@ -184,20 +184,19 @@ static int mei_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto disable_msi; } - if (mei_hw_init(dev)) { + if (mei_start(dev)) { dev_err(&pdev->dev, "init hw failure.\n"); err = -ENODEV; goto release_irq; } - err = mei_register(&pdev->dev); + err = mei_register(dev); if (err) goto release_irq; mei_pdev = pdev; pci_set_drvdata(pdev, dev); - schedule_delayed_work(&dev->timer_work, HZ); mutex_unlock(&mei_mutex); @@ -233,7 +232,7 @@ end: * mei_remove is called by the PCI subsystem to alert the driver * that it should release a PCI device. */ -static void mei_remove(struct pci_dev *pdev) +static void mei_me_remove(struct pci_dev *pdev) { struct mei_device *dev; struct mei_me_hw *hw; @@ -253,8 +252,6 @@ static void mei_remove(struct pci_dev *pdev) mei_pdev = NULL; - mei_watchdog_unregister(dev); - /* disable interrupts */ mei_disable_interrupts(dev); @@ -265,16 +262,17 @@ static void mei_remove(struct pci_dev *pdev) if (hw->mem_addr) pci_iounmap(pdev, hw->mem_addr); + mei_deregister(dev); + kfree(dev); pci_release_regions(pdev); pci_disable_device(pdev); - mei_deregister(); } #ifdef CONFIG_PM -static int mei_pci_suspend(struct device *device) +static int mei_me_pci_suspend(struct device *device) { struct pci_dev *pdev = to_pci_dev(device); struct mei_device *dev = pci_get_drvdata(pdev); @@ -294,7 +292,7 @@ static int mei_pci_suspend(struct device *device) return 0; } -static int mei_pci_resume(struct device *device) +static int mei_me_pci_resume(struct device *device) { struct pci_dev *pdev = to_pci_dev(device); struct mei_device *dev; @@ -334,24 +332,24 @@ static int mei_pci_resume(struct device *device) return err; } -static SIMPLE_DEV_PM_OPS(mei_pm_ops, mei_pci_suspend, mei_pci_resume); -#define MEI_PM_OPS (&mei_pm_ops) +static SIMPLE_DEV_PM_OPS(mei_me_pm_ops, mei_me_pci_suspend, mei_me_pci_resume); +#define MEI_ME_PM_OPS (&mei_me_pm_ops) #else -#define MEI_PM_OPS NULL +#define MEI_ME_PM_OPS NULL #endif /* CONFIG_PM */ /* * PCI driver structure */ -static struct pci_driver mei_driver = { +static struct pci_driver mei_me_driver = { .name = KBUILD_MODNAME, - .id_table = mei_pci_tbl, - .probe = mei_probe, - .remove = mei_remove, - .shutdown = mei_remove, - .driver.pm = MEI_PM_OPS, + .id_table = mei_me_pci_tbl, + .probe = mei_me_probe, + .remove = mei_me_remove, + .shutdown = mei_me_remove, + .driver.pm = MEI_ME_PM_OPS, }; -module_pci_driver(mei_driver); +module_pci_driver(mei_me_driver); MODULE_AUTHOR("Intel Corporation"); MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c index 2413247fc392..eb3f05c8d7d0 100644 --- a/drivers/misc/mei/wd.c +++ b/drivers/misc/mei/wd.c @@ -317,7 +317,8 @@ end: * * returns 0 if success, negative errno code for failure */ -static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, unsigned int timeout) +static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, + unsigned int timeout) { struct mei_device *dev; diff --git a/drivers/misc/tsl2550.c b/drivers/misc/tsl2550.c index 1e7bc0eb081e..1dfde4d543db 100644 --- a/drivers/misc/tsl2550.c +++ b/drivers/misc/tsl2550.c @@ -417,24 +417,26 @@ static int tsl2550_remove(struct i2c_client *client) return 0; } -#ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP -static int tsl2550_suspend(struct i2c_client *client, pm_message_t mesg) +static int tsl2550_suspend(struct device *dev) { - return tsl2550_set_power_state(client, 0); + return tsl2550_set_power_state(to_i2c_client(dev), 0); } -static int tsl2550_resume(struct i2c_client *client) +static int tsl2550_resume(struct device *dev) { - return tsl2550_set_power_state(client, 1); + return tsl2550_set_power_state(to_i2c_client(dev), 1); } +static SIMPLE_DEV_PM_OPS(tsl2550_pm_ops, tsl2550_suspend, tsl2550_resume); +#define TSL2550_PM_OPS (&tsl2550_pm_ops) + #else -#define tsl2550_suspend NULL -#define tsl2550_resume NULL +#define TSL2550_PM_OPS NULL -#endif /* CONFIG_PM */ +#endif /* CONFIG_PM_SLEEP */ static const struct i2c_device_id tsl2550_id[] = { { "tsl2550", 0 }, @@ -446,9 +448,8 @@ static struct i2c_driver tsl2550_driver = { .driver = { .name = TSL2550_DRV_NAME, .owner = THIS_MODULE, + .pm = TSL2550_PM_OPS, }, - .suspend = tsl2550_suspend, - .resume = tsl2550_resume, .probe = tsl2550_probe, .remove = tsl2550_remove, .id_table = tsl2550_id, diff --git a/drivers/mmc/host/sdricoh_cs.c b/drivers/mmc/host/sdricoh_cs.c index 7009f17ad6cd..50adbd155f35 100644 --- a/drivers/mmc/host/sdricoh_cs.c +++ b/drivers/mmc/host/sdricoh_cs.c @@ -543,25 +543,7 @@ static struct pcmcia_driver sdricoh_driver = { .suspend = sdricoh_pcmcia_suspend, .resume = sdricoh_pcmcia_resume, }; - -/*****************************************************************************\ - * * - * Driver init/exit * - * * -\*****************************************************************************/ - -static int __init sdricoh_drv_init(void) -{ - return pcmcia_register_driver(&sdricoh_driver); -} - -static void __exit sdricoh_drv_exit(void) -{ - pcmcia_unregister_driver(&sdricoh_driver); -} - -module_init(sdricoh_drv_init); -module_exit(sdricoh_drv_exit); +module_pcmcia_driver(sdricoh_driver); module_param(switchlocked, uint, 0444); diff --git a/drivers/net/arcnet/com20020_cs.c b/drivers/net/arcnet/com20020_cs.c index 5bed4c4e2508..74dc1875f9cd 100644 --- a/drivers/net/arcnet/com20020_cs.c +++ b/drivers/net/arcnet/com20020_cs.c @@ -333,16 +333,4 @@ static struct pcmcia_driver com20020_cs_driver = { .suspend = com20020_suspend, .resume = com20020_resume, }; - -static int __init init_com20020_cs(void) -{ - return pcmcia_register_driver(&com20020_cs_driver); -} - -static void __exit exit_com20020_cs(void) -{ - pcmcia_unregister_driver(&com20020_cs_driver); -} - -module_init(init_com20020_cs); -module_exit(exit_com20020_cs); +module_pcmcia_driver(com20020_cs_driver); diff --git a/drivers/net/can/sja1000/ems_pcmcia.c b/drivers/net/can/sja1000/ems_pcmcia.c index 5c2f3fbbf5ae..321c27e1c7fc 100644 --- a/drivers/net/can/sja1000/ems_pcmcia.c +++ b/drivers/net/can/sja1000/ems_pcmcia.c @@ -316,15 +316,4 @@ static struct pcmcia_driver ems_pcmcia_driver = { .remove = ems_pcmcia_remove, .id_table = ems_pcmcia_tbl, }; - -static int __init ems_pcmcia_init(void) -{ - return pcmcia_register_driver(&ems_pcmcia_driver); -} -module_init(ems_pcmcia_init); - -static void __exit ems_pcmcia_exit(void) -{ - pcmcia_unregister_driver(&ems_pcmcia_driver); -} -module_exit(ems_pcmcia_exit); +module_pcmcia_driver(ems_pcmcia_driver); diff --git a/drivers/net/can/sja1000/peak_pcmcia.c b/drivers/net/can/sja1000/peak_pcmcia.c index 1a7020ba37f5..0a707f70661c 100644 --- a/drivers/net/can/sja1000/peak_pcmcia.c +++ b/drivers/net/can/sja1000/peak_pcmcia.c @@ -740,15 +740,4 @@ static struct pcmcia_driver pcan_driver = { .remove = pcan_remove, .id_table = pcan_table, }; - -static int __init pcan_init(void) -{ - return pcmcia_register_driver(&pcan_driver); -} -module_init(pcan_init); - -static void __exit pcan_exit(void) -{ - pcmcia_unregister_driver(&pcan_driver); -} -module_exit(pcan_exit); +module_pcmcia_driver(pcan_driver); diff --git a/drivers/net/can/softing/softing_cs.c b/drivers/net/can/softing/softing_cs.c index c2c0a5bb0b21..498605f833dd 100644 --- a/drivers/net/can/softing/softing_cs.c +++ b/drivers/net/can/softing/softing_cs.c @@ -27,7 +27,7 @@ #include "softing_platform.h" static int softingcs_index; -static spinlock_t softingcs_index_lock; +static DEFINE_SPINLOCK(softingcs_index_lock); static int softingcs_reset(struct platform_device *pdev, int v); static int softingcs_enable_irq(struct platform_device *pdev, int v); @@ -340,19 +340,7 @@ static struct pcmcia_driver softingcs_driver = { .remove = softingcs_remove, }; -static int __init softingcs_start(void) -{ - spin_lock_init(&softingcs_index_lock); - return pcmcia_register_driver(&softingcs_driver); -} - -static void __exit softingcs_stop(void) -{ - pcmcia_unregister_driver(&softingcs_driver); -} - -module_init(softingcs_start); -module_exit(softingcs_stop); +module_pcmcia_driver(softingcs_driver); MODULE_DESCRIPTION("softing CANcard driver" ", links PCMCIA card to softing driver"); diff --git a/drivers/net/ethernet/3com/3c574_cs.c b/drivers/net/ethernet/3com/3c574_cs.c index ffd8de28a76a..6fc994fa4abe 100644 --- a/drivers/net/ethernet/3com/3c574_cs.c +++ b/drivers/net/ethernet/3com/3c574_cs.c @@ -1165,16 +1165,4 @@ static struct pcmcia_driver tc574_driver = { .suspend = tc574_suspend, .resume = tc574_resume, }; - -static int __init init_tc574(void) -{ - return pcmcia_register_driver(&tc574_driver); -} - -static void __exit exit_tc574(void) -{ - pcmcia_unregister_driver(&tc574_driver); -} - -module_init(init_tc574); -module_exit(exit_tc574); +module_pcmcia_driver(tc574_driver); diff --git a/drivers/net/ethernet/3com/3c589_cs.c b/drivers/net/ethernet/3com/3c589_cs.c index a556c01e011b..078480aaa168 100644 --- a/drivers/net/ethernet/3com/3c589_cs.c +++ b/drivers/net/ethernet/3com/3c589_cs.c @@ -928,16 +928,4 @@ static struct pcmcia_driver tc589_driver = { .suspend = tc589_suspend, .resume = tc589_resume, }; - -static int __init init_tc589(void) -{ - return pcmcia_register_driver(&tc589_driver); -} - -static void __exit exit_tc589(void) -{ - pcmcia_unregister_driver(&tc589_driver); -} - -module_init(init_tc589); -module_exit(exit_tc589); +module_pcmcia_driver(tc589_driver); diff --git a/drivers/net/ethernet/8390/axnet_cs.c b/drivers/net/ethernet/8390/axnet_cs.c index e1b3941bd149..d801c1410fb0 100644 --- a/drivers/net/ethernet/8390/axnet_cs.c +++ b/drivers/net/ethernet/8390/axnet_cs.c @@ -728,19 +728,7 @@ static struct pcmcia_driver axnet_cs_driver = { .suspend = axnet_suspend, .resume = axnet_resume, }; - -static int __init init_axnet_cs(void) -{ - return pcmcia_register_driver(&axnet_cs_driver); -} - -static void __exit exit_axnet_cs(void) -{ - pcmcia_unregister_driver(&axnet_cs_driver); -} - -module_init(init_axnet_cs); -module_exit(exit_axnet_cs); +module_pcmcia_driver(axnet_cs_driver); /*====================================================================*/ diff --git a/drivers/net/ethernet/8390/pcnet_cs.c b/drivers/net/ethernet/8390/pcnet_cs.c index de1af0bfed4c..46c5aadaca8e 100644 --- a/drivers/net/ethernet/8390/pcnet_cs.c +++ b/drivers/net/ethernet/8390/pcnet_cs.c @@ -1694,16 +1694,4 @@ static struct pcmcia_driver pcnet_driver = { .suspend = pcnet_suspend, .resume = pcnet_resume, }; - -static int __init init_pcnet_cs(void) -{ - return pcmcia_register_driver(&pcnet_driver); -} - -static void __exit exit_pcnet_cs(void) -{ - pcmcia_unregister_driver(&pcnet_driver); -} - -module_init(init_pcnet_cs); -module_exit(exit_pcnet_cs); +module_pcmcia_driver(pcnet_driver); diff --git a/drivers/net/ethernet/amd/nmclan_cs.c b/drivers/net/ethernet/amd/nmclan_cs.c index 9f59bf63514b..d4ed89130c52 100644 --- a/drivers/net/ethernet/amd/nmclan_cs.c +++ b/drivers/net/ethernet/amd/nmclan_cs.c @@ -1508,16 +1508,4 @@ static struct pcmcia_driver nmclan_cs_driver = { .suspend = nmclan_suspend, .resume = nmclan_resume, }; - -static int __init init_nmclan_cs(void) -{ - return pcmcia_register_driver(&nmclan_cs_driver); -} - -static void __exit exit_nmclan_cs(void) -{ - pcmcia_unregister_driver(&nmclan_cs_driver); -} - -module_init(init_nmclan_cs); -module_exit(exit_nmclan_cs); +module_pcmcia_driver(nmclan_cs_driver); diff --git a/drivers/net/ethernet/fujitsu/fmvj18x_cs.c b/drivers/net/ethernet/fujitsu/fmvj18x_cs.c index 2418faf2251a..ab98b77df309 100644 --- a/drivers/net/ethernet/fujitsu/fmvj18x_cs.c +++ b/drivers/net/ethernet/fujitsu/fmvj18x_cs.c @@ -705,19 +705,7 @@ static struct pcmcia_driver fmvj18x_cs_driver = { .suspend = fmvj18x_suspend, .resume = fmvj18x_resume, }; - -static int __init init_fmvj18x_cs(void) -{ - return pcmcia_register_driver(&fmvj18x_cs_driver); -} - -static void __exit exit_fmvj18x_cs(void) -{ - pcmcia_unregister_driver(&fmvj18x_cs_driver); -} - -module_init(init_fmvj18x_cs); -module_exit(exit_fmvj18x_cs); +module_pcmcia_driver(fmvj18x_cs_driver); /*====================================================================*/ diff --git a/drivers/net/ethernet/smsc/smc91c92_cs.c b/drivers/net/ethernet/smsc/smc91c92_cs.c index 04393b5fef71..656d2e2ebfc9 100644 --- a/drivers/net/ethernet/smsc/smc91c92_cs.c +++ b/drivers/net/ethernet/smsc/smc91c92_cs.c @@ -2054,16 +2054,4 @@ static struct pcmcia_driver smc91c92_cs_driver = { .suspend = smc91c92_suspend, .resume = smc91c92_resume, }; - -static int __init init_smc91c92_cs(void) -{ - return pcmcia_register_driver(&smc91c92_cs_driver); -} - -static void __exit exit_smc91c92_cs(void) -{ - pcmcia_unregister_driver(&smc91c92_cs_driver); -} - -module_init(init_smc91c92_cs); -module_exit(exit_smc91c92_cs); +module_pcmcia_driver(smc91c92_cs_driver); diff --git a/drivers/net/ethernet/xircom/xirc2ps_cs.c b/drivers/net/ethernet/xircom/xirc2ps_cs.c index 98e09d0d3ce2..1025b4e937d2 100644 --- a/drivers/net/ethernet/xircom/xirc2ps_cs.c +++ b/drivers/net/ethernet/xircom/xirc2ps_cs.c @@ -1775,21 +1775,7 @@ static struct pcmcia_driver xirc2ps_cs_driver = { .suspend = xirc2ps_suspend, .resume = xirc2ps_resume, }; - -static int __init -init_xirc2ps_cs(void) -{ - return pcmcia_register_driver(&xirc2ps_cs_driver); -} - -static void __exit -exit_xirc2ps_cs(void) -{ - pcmcia_unregister_driver(&xirc2ps_cs_driver); -} - -module_init(init_xirc2ps_cs); -module_exit(exit_xirc2ps_cs); +module_pcmcia_driver(xirc2ps_cs_driver); #ifndef MODULE static int __init setup_xirc2ps_cs(char *str) diff --git a/drivers/net/wireless/airo_cs.c b/drivers/net/wireless/airo_cs.c index 956024a636e6..14128fd265ac 100644 --- a/drivers/net/wireless/airo_cs.c +++ b/drivers/net/wireless/airo_cs.c @@ -180,16 +180,7 @@ static struct pcmcia_driver airo_driver = { .suspend = airo_suspend, .resume = airo_resume, }; - -static int __init airo_cs_init(void) -{ - return pcmcia_register_driver(&airo_driver); -} - -static void __exit airo_cs_cleanup(void) -{ - pcmcia_unregister_driver(&airo_driver); -} +module_pcmcia_driver(airo_driver); /* This program is free software; you can redistribute it and/or @@ -229,6 +220,3 @@ static void __exit airo_cs_cleanup(void) IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ - -module_init(airo_cs_init); -module_exit(airo_cs_cleanup); diff --git a/drivers/net/wireless/atmel_cs.c b/drivers/net/wireless/atmel_cs.c index b42930f457c2..522572219217 100644 --- a/drivers/net/wireless/atmel_cs.c +++ b/drivers/net/wireless/atmel_cs.c @@ -245,16 +245,7 @@ static struct pcmcia_driver atmel_driver = { .suspend = atmel_suspend, .resume = atmel_resume, }; - -static int __init atmel_cs_init(void) -{ - return pcmcia_register_driver(&atmel_driver); -} - -static void __exit atmel_cs_cleanup(void) -{ - pcmcia_unregister_driver(&atmel_driver); -} +module_pcmcia_driver(atmel_driver); /* This program is free software; you can redistribute it and/or @@ -294,6 +285,3 @@ static void __exit atmel_cs_cleanup(void) IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ - -module_init(atmel_cs_init); -module_exit(atmel_cs_cleanup); diff --git a/drivers/net/wireless/b43/pcmcia.c b/drivers/net/wireless/b43/pcmcia.c index f2ea2ceec8a9..55f2bd7f8f74 100644 --- a/drivers/net/wireless/b43/pcmcia.c +++ b/drivers/net/wireless/b43/pcmcia.c @@ -130,6 +130,10 @@ static struct pcmcia_driver b43_pcmcia_driver = { .resume = b43_pcmcia_resume, }; +/* + * These are not module init/exit functions! + * The module_pcmcia_driver() helper cannot be used here. + */ int b43_pcmcia_init(void) { return pcmcia_register_driver(&b43_pcmcia_driver); diff --git a/drivers/net/wireless/hostap/hostap_cs.c b/drivers/net/wireless/hostap/hostap_cs.c index 89e9d3a78c3c..56cd01ca8ad0 100644 --- a/drivers/net/wireless/hostap/hostap_cs.c +++ b/drivers/net/wireless/hostap/hostap_cs.c @@ -709,17 +709,4 @@ static struct pcmcia_driver hostap_driver = { .suspend = hostap_cs_suspend, .resume = hostap_cs_resume, }; - -static int __init init_prism2_pccard(void) -{ - return pcmcia_register_driver(&hostap_driver); -} - -static void __exit exit_prism2_pccard(void) -{ - pcmcia_unregister_driver(&hostap_driver); -} - - -module_init(init_prism2_pccard); -module_exit(exit_prism2_pccard); +module_pcmcia_driver(hostap_driver); diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c index 16beaf39dc53..c94dd6802672 100644 --- a/drivers/net/wireless/libertas/if_cs.c +++ b/drivers/net/wireless/libertas/if_cs.c @@ -999,7 +999,6 @@ static const struct pcmcia_device_id if_cs_ids[] = { }; MODULE_DEVICE_TABLE(pcmcia, if_cs_ids); - static struct pcmcia_driver lbs_driver = { .owner = THIS_MODULE, .name = DRV_NAME, @@ -1007,26 +1006,4 @@ static struct pcmcia_driver lbs_driver = { .remove = if_cs_detach, .id_table = if_cs_ids, }; - - -static int __init if_cs_init(void) -{ - int ret; - - lbs_deb_enter(LBS_DEB_CS); - ret = pcmcia_register_driver(&lbs_driver); - lbs_deb_leave(LBS_DEB_CS); - return ret; -} - - -static void __exit if_cs_exit(void) -{ - lbs_deb_enter(LBS_DEB_CS); - pcmcia_unregister_driver(&lbs_driver); - lbs_deb_leave(LBS_DEB_CS); -} - - -module_init(if_cs_init); -module_exit(if_cs_exit); +module_pcmcia_driver(lbs_driver); diff --git a/drivers/net/wireless/orinoco/orinoco_cs.c b/drivers/net/wireless/orinoco/orinoco_cs.c index d7dbc00bcfbe..d21d95939316 100644 --- a/drivers/net/wireless/orinoco/orinoco_cs.c +++ b/drivers/net/wireless/orinoco/orinoco_cs.c @@ -338,18 +338,4 @@ static struct pcmcia_driver orinoco_driver = { .suspend = orinoco_cs_suspend, .resume = orinoco_cs_resume, }; - -static int __init -init_orinoco_cs(void) -{ - return pcmcia_register_driver(&orinoco_driver); -} - -static void __exit -exit_orinoco_cs(void) -{ - pcmcia_unregister_driver(&orinoco_driver); -} - -module_init(init_orinoco_cs); -module_exit(exit_orinoco_cs); +module_pcmcia_driver(orinoco_driver); diff --git a/drivers/net/wireless/orinoco/spectrum_cs.c b/drivers/net/wireless/orinoco/spectrum_cs.c index 6e28ee4e9c52..e2264bc12ebf 100644 --- a/drivers/net/wireless/orinoco/spectrum_cs.c +++ b/drivers/net/wireless/orinoco/spectrum_cs.c @@ -318,18 +318,4 @@ static struct pcmcia_driver orinoco_driver = { .resume = spectrum_cs_resume, .id_table = spectrum_cs_ids, }; - -static int __init -init_spectrum_cs(void) -{ - return pcmcia_register_driver(&orinoco_driver); -} - -static void __exit -exit_spectrum_cs(void) -{ - pcmcia_unregister_driver(&orinoco_driver); -} - -module_init(init_spectrum_cs); -module_exit(exit_spectrum_cs); +module_pcmcia_driver(orinoco_driver); diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c index 730186d0449b..38d2089f338a 100644 --- a/drivers/net/wireless/wl3501_cs.c +++ b/drivers/net/wireless/wl3501_cs.c @@ -2013,19 +2013,7 @@ static struct pcmcia_driver wl3501_driver = { .suspend = wl3501_suspend, .resume = wl3501_resume, }; - -static int __init wl3501_init_module(void) -{ - return pcmcia_register_driver(&wl3501_driver); -} - -static void __exit wl3501_exit_module(void) -{ - pcmcia_unregister_driver(&wl3501_driver); -} - -module_init(wl3501_init_module); -module_exit(wl3501_exit_module); +module_pcmcia_driver(wl3501_driver); MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, " "Arnaldo Carvalho de Melo <acme@conectiva.com.br>," diff --git a/drivers/parport/parport_amiga.c b/drivers/parport/parport_amiga.c index ee78e0ee6e05..09503b8d12e6 100644 --- a/drivers/parport/parport_amiga.c +++ b/drivers/parport/parport_amiga.c @@ -244,20 +244,7 @@ static struct platform_driver amiga_parallel_driver = { }, }; -static int __init amiga_parallel_init(void) -{ - return platform_driver_probe(&amiga_parallel_driver, - amiga_parallel_probe); -} - -module_init(amiga_parallel_init); - -static void __exit amiga_parallel_exit(void) -{ - platform_driver_unregister(&amiga_parallel_driver); -} - -module_exit(amiga_parallel_exit); +module_platform_driver_probe(amiga_parallel_driver, amiga_parallel_probe); MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>"); MODULE_DESCRIPTION("Parport Driver for Amiga builtin Port"); diff --git a/drivers/parport/parport_cs.c b/drivers/parport/parport_cs.c index 067ad517c1f5..e9b52e4a4648 100644 --- a/drivers/parport/parport_cs.c +++ b/drivers/parport/parport_cs.c @@ -193,16 +193,4 @@ static struct pcmcia_driver parport_cs_driver = { .remove = parport_detach, .id_table = parport_ids, }; - -static int __init init_parport_cs(void) -{ - return pcmcia_register_driver(&parport_cs_driver); -} - -static void __exit exit_parport_cs(void) -{ - pcmcia_unregister_driver(&parport_cs_driver); -} - -module_init(init_parport_cs); -module_exit(exit_parport_cs); +module_pcmcia_driver(parport_cs_driver); diff --git a/drivers/parport/parport_gsc.c b/drivers/parport/parport_gsc.c index 050773c36823..a5251cb5fb0c 100644 --- a/drivers/parport/parport_gsc.c +++ b/drivers/parport/parport_gsc.c @@ -246,14 +246,14 @@ struct parport *parport_gsc_probe_port(unsigned long base, printk (KERN_DEBUG "parport (0x%lx): no memory!\n", base); return NULL; } - ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL); + ops = kmemdup(&parport_gsc_ops, sizeof(struct parport_operations), + GFP_KERNEL); if (!ops) { printk (KERN_DEBUG "parport (0x%lx): no memory for ops!\n", base); kfree (priv); return NULL; } - memcpy (ops, &parport_gsc_ops, sizeof (struct parport_operations)); priv->ctr = 0xc; priv->ctr_writable = 0xff; priv->dma_buf = 0; diff --git a/drivers/parport/parport_sunbpp.c b/drivers/parport/parport_sunbpp.c index 5c4b6a1db6ca..dffd6d0bd15b 100644 --- a/drivers/parport/parport_sunbpp.c +++ b/drivers/parport/parport_sunbpp.c @@ -284,12 +284,11 @@ static int bpp_probe(struct platform_device *op) size = resource_size(&op->resource[0]); dma = PARPORT_DMA_NONE; - ops = kmalloc(sizeof(struct parport_operations), GFP_KERNEL); + ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations), + GFP_KERNEL); if (!ops) goto out_unmap; - memcpy (ops, &parport_sunbpp_ops, sizeof(struct parport_operations)); - dprintk(("register_port\n")); if (!(p = parport_register_port((unsigned long)base, irq, dma, ops))) goto out_free_ops; diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c index 3f56bc086cb5..92ed045a5f93 100644 --- a/drivers/parport/procfs.c +++ b/drivers/parport/procfs.c @@ -476,10 +476,9 @@ int parport_proc_register(struct parport *port) struct parport_sysctl_table *t; int i; - t = kmalloc(sizeof(*t), GFP_KERNEL); + t = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL); if (t == NULL) return -ENOMEM; - memcpy(t, &parport_sysctl_template, sizeof(*t)); t->device_dir[0].extra1 = port; @@ -523,10 +522,9 @@ int parport_device_proc_register(struct pardevice *device) struct parport_device_sysctl_table *t; struct parport * port = device->port; - t = kmalloc(sizeof(*t), GFP_KERNEL); + t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL); if (t == NULL) return -ENOMEM; - memcpy(t, &parport_device_sysctl_template, sizeof(*t)); t->dev_dir[0].child = t->parport_dir; t->parport_dir[0].child = t->port_dir; diff --git a/drivers/ssbi/Kconfig b/drivers/ssbi/Kconfig new file mode 100644 index 000000000000..1ae4040afedd --- /dev/null +++ b/drivers/ssbi/Kconfig @@ -0,0 +1,16 @@ +# +# SSBI bus support +# + +menu "Qualcomm MSM SSBI bus support" + +config SSBI + tristate "Qualcomm Single-wire Serial Bus Interface (SSBI)" + help + If you say yes to this option, support will be included for the + built-in SSBI interface on Qualcomm MSM family processors. + + This is required for communicating with Qualcomm PMICs and + other devices that have the SSBI interface. + +endmenu diff --git a/drivers/ssbi/Makefile b/drivers/ssbi/Makefile new file mode 100644 index 000000000000..38fb70c31caf --- /dev/null +++ b/drivers/ssbi/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_SSBI) += ssbi.o diff --git a/drivers/ssbi/ssbi.c b/drivers/ssbi/ssbi.c new file mode 100644 index 000000000000..f32da0258a8e --- /dev/null +++ b/drivers/ssbi/ssbi.c @@ -0,0 +1,379 @@ +/* Copyright (c) 2009-2013, The Linux Foundation. All rights reserved. + * Copyright (c) 2010, Google Inc. + * + * Original authors: Code Aurora Forum + * + * Author: Dima Zavin <dima@android.com> + * - Largely rewritten from original to not be an i2c driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#define pr_fmt(fmt) "%s: " fmt, __func__ + +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/ssbi.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> + +/* SSBI 2.0 controller registers */ +#define SSBI2_CMD 0x0008 +#define SSBI2_RD 0x0010 +#define SSBI2_STATUS 0x0014 +#define SSBI2_MODE2 0x001C + +/* SSBI_CMD fields */ +#define SSBI_CMD_RDWRN (1 << 24) + +/* SSBI_STATUS fields */ +#define SSBI_STATUS_RD_READY (1 << 2) +#define SSBI_STATUS_READY (1 << 1) +#define SSBI_STATUS_MCHN_BUSY (1 << 0) + +/* SSBI_MODE2 fields */ +#define SSBI_MODE2_REG_ADDR_15_8_SHFT 0x04 +#define SSBI_MODE2_REG_ADDR_15_8_MASK (0x7f << SSBI_MODE2_REG_ADDR_15_8_SHFT) + +#define SET_SSBI_MODE2_REG_ADDR_15_8(MD, AD) \ + (((MD) & 0x0F) | ((((AD) >> 8) << SSBI_MODE2_REG_ADDR_15_8_SHFT) & \ + SSBI_MODE2_REG_ADDR_15_8_MASK)) + +/* SSBI PMIC Arbiter command registers */ +#define SSBI_PA_CMD 0x0000 +#define SSBI_PA_RD_STATUS 0x0004 + +/* SSBI_PA_CMD fields */ +#define SSBI_PA_CMD_RDWRN (1 << 24) +#define SSBI_PA_CMD_ADDR_MASK 0x7fff /* REG_ADDR_7_0, REG_ADDR_8_14*/ + +/* SSBI_PA_RD_STATUS fields */ +#define SSBI_PA_RD_STATUS_TRANS_DONE (1 << 27) +#define SSBI_PA_RD_STATUS_TRANS_DENIED (1 << 26) + +#define SSBI_TIMEOUT_US 100 + +struct ssbi { + struct device *slave; + void __iomem *base; + spinlock_t lock; + enum ssbi_controller_type controller_type; + int (*read)(struct ssbi *, u16 addr, u8 *buf, int len); + int (*write)(struct ssbi *, u16 addr, u8 *buf, int len); +}; + +#define to_ssbi(dev) platform_get_drvdata(to_platform_device(dev)) + +static inline u32 ssbi_readl(struct ssbi *ssbi, u32 reg) +{ + return readl(ssbi->base + reg); +} + +static inline void ssbi_writel(struct ssbi *ssbi, u32 val, u32 reg) +{ + writel(val, ssbi->base + reg); +} + +/* + * Via private exchange with one of the original authors, the hardware + * should generally finish a transaction in about 5us. The worst + * case, is when using the arbiter and both other CPUs have just + * started trying to use the SSBI bus will result in a time of about + * 20us. It should never take longer than this. + * + * As such, this wait merely spins, with a udelay. + */ +static int ssbi_wait_mask(struct ssbi *ssbi, u32 set_mask, u32 clr_mask) +{ + u32 timeout = SSBI_TIMEOUT_US; + u32 val; + + while (timeout--) { + val = ssbi_readl(ssbi, SSBI2_STATUS); + if (((val & set_mask) == set_mask) && ((val & clr_mask) == 0)) + return 0; + udelay(1); + } + + return -ETIMEDOUT; +} + +static int +ssbi_read_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len) +{ + u32 cmd = SSBI_CMD_RDWRN | ((addr & 0xff) << 16); + int ret = 0; + + if (ssbi->controller_type == MSM_SBI_CTRL_SSBI2) { + u32 mode2 = ssbi_readl(ssbi, SSBI2_MODE2); + mode2 = SET_SSBI_MODE2_REG_ADDR_15_8(mode2, addr); + ssbi_writel(ssbi, mode2, SSBI2_MODE2); + } + + while (len) { + ret = ssbi_wait_mask(ssbi, SSBI_STATUS_READY, 0); + if (ret) + goto err; + + ssbi_writel(ssbi, cmd, SSBI2_CMD); + ret = ssbi_wait_mask(ssbi, SSBI_STATUS_RD_READY, 0); + if (ret) + goto err; + *buf++ = ssbi_readl(ssbi, SSBI2_RD) & 0xff; + len--; + } + +err: + return ret; +} + +static int +ssbi_write_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len) +{ + int ret = 0; + + if (ssbi->controller_type == MSM_SBI_CTRL_SSBI2) { + u32 mode2 = ssbi_readl(ssbi, SSBI2_MODE2); + mode2 = SET_SSBI_MODE2_REG_ADDR_15_8(mode2, addr); + ssbi_writel(ssbi, mode2, SSBI2_MODE2); + } + + while (len) { + ret = ssbi_wait_mask(ssbi, SSBI_STATUS_READY, 0); + if (ret) + goto err; + + ssbi_writel(ssbi, ((addr & 0xff) << 16) | *buf, SSBI2_CMD); + ret = ssbi_wait_mask(ssbi, 0, SSBI_STATUS_MCHN_BUSY); + if (ret) + goto err; + buf++; + len--; + } + +err: + return ret; +} + +/* + * See ssbi_wait_mask for an explanation of the time and the + * busywait. + */ +static inline int +ssbi_pa_transfer(struct ssbi *ssbi, u32 cmd, u8 *data) +{ + u32 timeout = SSBI_TIMEOUT_US; + u32 rd_status = 0; + + ssbi_writel(ssbi, cmd, SSBI_PA_CMD); + + while (timeout--) { + rd_status = ssbi_readl(ssbi, SSBI_PA_RD_STATUS); + + if (rd_status & SSBI_PA_RD_STATUS_TRANS_DENIED) + return -EPERM; + + if (rd_status & SSBI_PA_RD_STATUS_TRANS_DONE) { + if (data) + *data = rd_status & 0xff; + return 0; + } + udelay(1); + } + + return -ETIMEDOUT; +} + +static int +ssbi_pa_read_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len) +{ + u32 cmd; + int ret = 0; + + cmd = SSBI_PA_CMD_RDWRN | (addr & SSBI_PA_CMD_ADDR_MASK) << 8; + + while (len) { + ret = ssbi_pa_transfer(ssbi, cmd, buf); + if (ret) + goto err; + buf++; + len--; + } + +err: + return ret; +} + +static int +ssbi_pa_write_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len) +{ + u32 cmd; + int ret = 0; + + while (len) { + cmd = (addr & SSBI_PA_CMD_ADDR_MASK) << 8 | *buf; + ret = ssbi_pa_transfer(ssbi, cmd, NULL); + if (ret) + goto err; + buf++; + len--; + } + +err: + return ret; +} + +int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len) +{ + struct ssbi *ssbi = to_ssbi(dev); + unsigned long flags; + int ret; + + spin_lock_irqsave(&ssbi->lock, flags); + ret = ssbi->read(ssbi, addr, buf, len); + spin_unlock_irqrestore(&ssbi->lock, flags); + + return ret; +} +EXPORT_SYMBOL_GPL(ssbi_read); + +int ssbi_write(struct device *dev, u16 addr, u8 *buf, int len) +{ + struct ssbi *ssbi = to_ssbi(dev); + unsigned long flags; + int ret; + + spin_lock_irqsave(&ssbi->lock, flags); + ret = ssbi->write(ssbi, addr, buf, len); + spin_unlock_irqrestore(&ssbi->lock, flags); + + return ret; +} +EXPORT_SYMBOL_GPL(ssbi_write); + +static int ssbi_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct resource *mem_res; + struct ssbi *ssbi; + int ret = 0; + const char *type; + + ssbi = kzalloc(sizeof(struct ssbi), GFP_KERNEL); + if (!ssbi) { + pr_err("can not allocate ssbi_data\n"); + return -ENOMEM; + } + + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem_res) { + pr_err("missing mem resource\n"); + ret = -EINVAL; + goto err_get_mem_res; + } + + ssbi->base = ioremap(mem_res->start, resource_size(mem_res)); + if (!ssbi->base) { + pr_err("ioremap of 0x%p failed\n", (void *)mem_res->start); + ret = -EINVAL; + goto err_ioremap; + } + platform_set_drvdata(pdev, ssbi); + + type = of_get_property(np, "qcom,controller-type", NULL); + if (type == NULL) { + pr_err("Missing qcom,controller-type property\n"); + ret = -EINVAL; + goto err_ssbi_controller; + } + dev_info(&pdev->dev, "SSBI controller type: '%s'\n", type); + if (strcmp(type, "ssbi") == 0) + ssbi->controller_type = MSM_SBI_CTRL_SSBI; + else if (strcmp(type, "ssbi2") == 0) + ssbi->controller_type = MSM_SBI_CTRL_SSBI2; + else if (strcmp(type, "pmic-arbiter") == 0) + ssbi->controller_type = MSM_SBI_CTRL_PMIC_ARBITER; + else { + pr_err("Unknown qcom,controller-type\n"); + ret = -EINVAL; + goto err_ssbi_controller; + } + + if (ssbi->controller_type == MSM_SBI_CTRL_PMIC_ARBITER) { + ssbi->read = ssbi_pa_read_bytes; + ssbi->write = ssbi_pa_write_bytes; + } else { + ssbi->read = ssbi_read_bytes; + ssbi->write = ssbi_write_bytes; + } + + spin_lock_init(&ssbi->lock); + + ret = of_platform_populate(np, NULL, NULL, &pdev->dev); + if (ret) + goto err_ssbi_controller; + + return 0; + +err_ssbi_controller: + platform_set_drvdata(pdev, NULL); + iounmap(ssbi->base); +err_ioremap: +err_get_mem_res: + kfree(ssbi); + return ret; +} + +static int ssbi_remove(struct platform_device *pdev) +{ + struct ssbi *ssbi = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + iounmap(ssbi->base); + kfree(ssbi); + return 0; +} + +static struct of_device_id ssbi_match_table[] = { + { .compatible = "qcom,ssbi" }, + {} +}; + +static struct platform_driver ssbi_driver = { + .probe = ssbi_probe, + .remove = ssbi_remove, + .driver = { + .name = "ssbi", + .owner = THIS_MODULE, + .of_match_table = ssbi_match_table, + }, +}; + +static int __init ssbi_init(void) +{ + return platform_driver_register(&ssbi_driver); +} +module_init(ssbi_init); + +static void __exit ssbi_exit(void) +{ + platform_driver_unregister(&ssbi_driver); +} +module_exit(ssbi_exit) + +MODULE_LICENSE("GPL v2"); +MODULE_VERSION("1.0"); +MODULE_ALIAS("platform:ssbi"); +MODULE_AUTHOR("Dima Zavin <dima@android.com>"); diff --git a/drivers/tty/serial/8250/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c index b7d48b346393..1b74b88e1e1e 100644 --- a/drivers/tty/serial/8250/serial_cs.c +++ b/drivers/tty/serial/8250/serial_cs.c @@ -852,18 +852,6 @@ static struct pcmcia_driver serial_cs_driver = { .suspend = serial_suspend, .resume = serial_resume, }; - -static int __init init_serial_cs(void) -{ - return pcmcia_register_driver(&serial_cs_driver); -} - -static void __exit exit_serial_cs(void) -{ - pcmcia_unregister_driver(&serial_cs_driver); -} - -module_init(init_serial_cs); -module_exit(exit_serial_cs); +module_pcmcia_driver(serial_cs_driver); MODULE_LICENSE("GPL"); diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index c8b926291e28..b645c47501b4 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -374,6 +374,7 @@ static int uio_get_minor(struct uio_device *idev) retval = idr_alloc(&uio_idr, idev, 0, UIO_MAX_DEVICES, GFP_KERNEL); if (retval >= 0) { idev->minor = retval; + retval = 0; } else if (retval == -ENOSPC) { dev_err(idev->dev, "too many uio devices\n"); retval = -EINVAL; diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c index 3b6f50eaec91..469564e57a52 100644 --- a/drivers/usb/host/sl811_cs.c +++ b/drivers/usb/host/sl811_cs.c @@ -200,17 +200,4 @@ static struct pcmcia_driver sl811_cs_driver = { .remove = sl811_cs_detach, .id_table = sl811_ids, }; - -/*====================================================================*/ - -static int __init init_sl811_cs(void) -{ - return pcmcia_register_driver(&sl811_cs_driver); -} -module_init(init_sl811_cs); - -static void __exit exit_sl811_cs(void) -{ - pcmcia_unregister_driver(&sl811_cs_driver); -} -module_exit(exit_sl811_cs); +module_pcmcia_driver(sl811_cs_driver); diff --git a/drivers/w1/masters/mxc_w1.c b/drivers/w1/masters/mxc_w1.c index 950d354d50e2..47e12cfc2a57 100644 --- a/drivers/w1/masters/mxc_w1.c +++ b/drivers/w1/masters/mxc_w1.c @@ -121,9 +121,9 @@ static int mxc_w1_probe(struct platform_device *pdev) mdev->clkdiv = (clk_get_rate(mdev->clk) / 1000000) - 1; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - mdev->regs = devm_request_and_ioremap(&pdev->dev, res); - if (!mdev->regs) - return -EBUSY; + mdev->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(mdev->regs)) + return PTR_ERR(mdev->regs); clk_prepare_enable(mdev->clk); __raw_writeb(mdev->clkdiv, mdev->regs + MXC_W1_TIME_DIVIDER); diff --git a/drivers/w1/slaves/Kconfig b/drivers/w1/slaves/Kconfig index 762561fbabbf..5e6a3c9e510b 100644 --- a/drivers/w1/slaves/Kconfig +++ b/drivers/w1/slaves/Kconfig @@ -22,6 +22,16 @@ config W1_SLAVE_DS2408 Say Y here if you want to use a 1-wire DS2408 8-Channel Addressable Switch device support +config W1_SLAVE_DS2408_READBACK + bool "Read-back values written to DS2408's output register" + depends on W1_SLAVE_DS2408 + default y + help + Enabling this will cause the driver to read back the values written + to the chip's output register in order to detect errors. + + This is slower but useful when debugging chips and/or busses. + config W1_SLAVE_DS2413 tristate "Dual Channel Addressable Switch 0x3a family support (DS2413)" help diff --git a/drivers/w1/slaves/w1_ds2408.c b/drivers/w1/slaves/w1_ds2408.c index 441ad3a3b586..e45eca1044bd 100644 --- a/drivers/w1/slaves/w1_ds2408.c +++ b/drivers/w1/slaves/w1_ds2408.c @@ -178,6 +178,15 @@ static ssize_t w1_f29_write_output( w1_write_block(sl->master, w1_buf, 3); readBack = w1_read_8(sl->master); + + if (readBack != W1_F29_SUCCESS_CONFIRM_BYTE) { + if (w1_reset_resume_command(sl->master)) + goto error; + /* try again, the slave is ready for a command */ + continue; + } + +#ifdef CONFIG_W1_SLAVE_DS2408_READBACK /* here the master could read another byte which would be the PIO reg (the actual pin logic state) since in this driver we don't know which pins are @@ -186,11 +195,6 @@ static ssize_t w1_f29_write_output( if (w1_reset_resume_command(sl->master)) goto error; - if (readBack != 0xAA) { - /* try again, the slave is ready for a command */ - continue; - } - /* go read back the output latches */ /* (the direct effect of the write above) */ w1_buf[0] = W1_F29_FUNC_READ_PIO_REGS; @@ -198,7 +202,9 @@ static ssize_t w1_f29_write_output( w1_buf[2] = 0; w1_write_block(sl->master, w1_buf, 3); /* read the result of the READ_PIO_REGS command */ - if (w1_read_8(sl->master) == *buf) { + if (w1_read_8(sl->master) == *buf) +#endif + { /* success! */ mutex_unlock(&sl->master->bus_mutex); dev_dbg(&sl->dev, @@ -297,8 +303,7 @@ error: -#define NB_SYSFS_BIN_FILES 6 -static struct bin_attribute w1_f29_sysfs_bin_files[NB_SYSFS_BIN_FILES] = { +static struct bin_attribute w1_f29_sysfs_bin_files[] = { { .attr = { .name = "state", @@ -357,7 +362,7 @@ static int w1_f29_add_slave(struct w1_slave *sl) int err = 0; int i; - for (i = 0; i < NB_SYSFS_BIN_FILES && !err; ++i) + for (i = 0; i < ARRAY_SIZE(w1_f29_sysfs_bin_files) && !err; ++i) err = sysfs_create_bin_file( &sl->dev.kobj, &(w1_f29_sysfs_bin_files[i])); @@ -371,7 +376,7 @@ static int w1_f29_add_slave(struct w1_slave *sl) static void w1_f29_remove_slave(struct w1_slave *sl) { int i; - for (i = NB_SYSFS_BIN_FILES - 1; i >= 0; --i) + for (i = ARRAY_SIZE(w1_f29_sysfs_bin_files) - 1; i >= 0; --i) sysfs_remove_bin_file(&sl->dev.kobj, &(w1_f29_sysfs_bin_files[i])); } diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index df77ba9a8166..95d0850584da 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -27,6 +27,63 @@ #include <linux/types.h> + +/* + * Implementation of host controlled snapshot of the guest. + */ + +#define VSS_OP_REGISTER 128 + +enum hv_vss_op { + VSS_OP_CREATE = 0, + VSS_OP_DELETE, + VSS_OP_HOT_BACKUP, + VSS_OP_GET_DM_INFO, + VSS_OP_BU_COMPLETE, + /* + * Following operations are only supported with IC version >= 5.0 + */ + VSS_OP_FREEZE, /* Freeze the file systems in the VM */ + VSS_OP_THAW, /* Unfreeze the file systems */ + VSS_OP_AUTO_RECOVER, + VSS_OP_COUNT /* Number of operations, must be last */ +}; + + +/* + * Header for all VSS messages. + */ +struct hv_vss_hdr { + __u8 operation; + __u8 reserved[7]; +} __attribute__((packed)); + + +/* + * Flag values for the hv_vss_check_feature. Linux supports only + * one value. + */ +#define VSS_HBU_NO_AUTO_RECOVERY 0x00000005 + +struct hv_vss_check_feature { + __u32 flags; +} __attribute__((packed)); + +struct hv_vss_check_dm_info { + __u32 flags; +} __attribute__((packed)); + +struct hv_vss_msg { + union { + struct hv_vss_hdr vss_hdr; + int error; + }; + union { + struct hv_vss_check_feature vss_cf; + struct hv_vss_check_dm_info dm_info; + }; +} __attribute__((packed)); + /* * An implementation of HyperV key value pair (KVP) functionality for Linux. * @@ -1253,6 +1310,14 @@ void vmbus_driver_unregister(struct hv_driver *hv_driver); } /* + * VSS (Backup/Restore) GUID + */ +#define HV_VSS_GUID \ + .guid = { \ + 0x29, 0x2e, 0xfa, 0x35, 0x23, 0xea, 0x36, 0x42, \ + 0x96, 0xae, 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40 \ + } +/* * Common header for Hyper-V ICs */ @@ -1356,6 +1421,10 @@ int hv_kvp_init(struct hv_util_service *); void hv_kvp_deinit(void); void hv_kvp_onchannelcallback(void *); +int hv_vss_init(struct hv_util_service *); +void hv_vss_deinit(void); +void hv_vss_onchannelcallback(void *); + /* * Negotiated version with the Host. */ diff --git a/include/linux/ipack.h b/include/linux/ipack.h index fea12cbb2aeb..1888e06ddf64 100644 --- a/include/linux/ipack.h +++ b/include/linux/ipack.h @@ -207,19 +207,41 @@ int ipack_driver_register(struct ipack_driver *edrv, struct module *owner, void ipack_driver_unregister(struct ipack_driver *edrv); /** - * ipack_device_register -- register an IPack device with the kernel - * @dev: the new device to register. + * ipack_device_init -- initialize an IPack device + * @dev: the new device to initialize. * - * Register a new IPack device ("module" in IndustryPack jargon). The call - * is done by the carrier driver. The carrier should populate the fields - * bus and slot as well as the region array of @dev prior to calling this - * function. The rest of the fields will be allocated and populated - * during registration. + * Initialize a new IPack device ("module" in IndustryPack jargon). The call + * is done by the carrier driver. The carrier should populate the fields + * bus and slot as well as the region array of @dev prior to calling this + * function. The rest of the fields will be allocated and populated + * during initalization. * - * Return zero on success or error code on failure. + * Return zero on success or error code on failure. + * + * NOTE: _Never_ directly free @dev after calling this function, even + * if it returned an error! Always use ipack_put_device() to give up the + * reference initialized in this function instead. + */ +int ipack_device_init(struct ipack_device *dev); + +/** + * ipack_device_add -- Add an IPack device + * @dev: the new device to add. + * + * Add a new IPack device. The call is done by the carrier driver + * after calling ipack_device_init(). + * + * Return zero on success or error code on failure. + * + * NOTE: _Never_ directly free @dev after calling this function, even + * if it returned an error! Always use ipack_put_device() to give up the + * reference initialized in this function instead. */ -int ipack_device_register(struct ipack_device *dev); -void ipack_device_unregister(struct ipack_device *dev); +int ipack_device_add(struct ipack_device *dev); +void ipack_device_del(struct ipack_device *dev); + +void ipack_get_device(struct ipack_device *dev); +void ipack_put_device(struct ipack_device *dev); /** * DEFINE_IPACK_DEVICE_TABLE - macro used to describe a IndustryPack table diff --git a/include/linux/mei_cl_bus.h b/include/linux/mei_cl_bus.h new file mode 100644 index 000000000000..d14af7b722ef --- /dev/null +++ b/include/linux/mei_cl_bus.h @@ -0,0 +1,44 @@ +#ifndef _LINUX_MEI_CL_BUS_H +#define _LINUX_MEI_CL_BUS_H + +#include <linux/device.h> +#include <linux/uuid.h> + +struct mei_cl_device; + +struct mei_cl_driver { + struct device_driver driver; + const char *name; + + const struct mei_cl_device_id *id_table; + + int (*probe)(struct mei_cl_device *dev, + const struct mei_cl_device_id *id); + int (*remove)(struct mei_cl_device *dev); +}; + +int __mei_cl_driver_register(struct mei_cl_driver *driver, + struct module *owner); +#define mei_cl_driver_register(driver) \ + __mei_cl_driver_register(driver, THIS_MODULE) + +void mei_cl_driver_unregister(struct mei_cl_driver *driver); + +int mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length); +int mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length); + +typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device, + u32 events, void *context); +int mei_cl_register_event_cb(struct mei_cl_device *device, + mei_cl_event_cb_t read_cb, void *context); + +#define MEI_CL_EVENT_RX 0 +#define MEI_CL_EVENT_TX 1 + +void *mei_cl_get_drvdata(const struct mei_cl_device *device); +void mei_cl_set_drvdata(struct mei_cl_device *device, void *data); + +int mei_cl_enable_device(struct mei_cl_device *device); +int mei_cl_disable_device(struct mei_cl_device *device); + +#endif /* _LINUX_MEI_CL_BUS_H */ diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h index a710255528d7..cc281368dc55 100644 --- a/include/linux/mfd/arizona/core.h +++ b/include/linux/mfd/arizona/core.h @@ -100,6 +100,9 @@ struct arizona { struct regmap_irq_chip_data *aod_irq_chip; struct regmap_irq_chip_data *irq_chip; + bool hpdet_magic; + unsigned int hp_ena; + struct mutex clk_lock; int clk32k_ref; diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 455c51d22d6b..a0f940987a3e 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -86,6 +86,11 @@ struct arizona_micd_config { bool gpio; }; +struct arizona_micd_range { + int max; /** Ohms */ + int key; /** Key to report to input layer */ +}; + struct arizona_pdata { int reset; /** GPIO controlling /RESET, if any */ int ldoena; /** GPIO controlling LODENA, if any */ @@ -117,12 +122,21 @@ struct arizona_pdata { /** GPIO5 is used for jack detection */ bool jd_gpio5; + /** Internal pull on GPIO5 is disabled when used for jack detection */ + bool jd_gpio5_nopull; + /** Use the headphone detect circuit to identify the accessory */ bool hpdet_acc_id; + /** Check for line output with HPDET method */ + bool hpdet_acc_id_line; + /** GPIO used for mic isolation with HPDET */ int hpdet_id_gpio; + /** Extra debounce timeout used during initial mic detection (ms) */ + int micd_detect_debounce; + /** GPIO for mic detection polarity */ int micd_pol_gpio; @@ -135,9 +149,16 @@ struct arizona_pdata { /** Mic detect debounce level */ int micd_dbtime; + /** Mic detect timeout (ms) */ + int micd_timeout; + /** Force MICBIAS on for mic detect */ bool micd_force_micbias; + /** Mic detect level parameters */ + const struct arizona_micd_range *micd_ranges; + int num_micd_ranges; + /** Headset polarity configurations */ struct arizona_micd_config *micd_configs; int num_micd_configs; diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index 340355136069..f43aa7c8d040 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -124,6 +124,10 @@ #define ARIZONA_MIC_DETECT_1 0x2A3 #define ARIZONA_MIC_DETECT_2 0x2A4 #define ARIZONA_MIC_DETECT_3 0x2A5 +#define ARIZONA_MIC_DETECT_LEVEL_1 0x2A6 +#define ARIZONA_MIC_DETECT_LEVEL_2 0x2A7 +#define ARIZONA_MIC_DETECT_LEVEL_3 0x2A8 +#define ARIZONA_MIC_DETECT_LEVEL_4 0x2A9 #define ARIZONA_MIC_NOISE_MIX_CONTROL_1 0x2C3 #define ARIZONA_ISOLATION_CONTROL 0x2CB #define ARIZONA_JACK_DETECT_ANALOGUE 0x2D3 diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 779cf7c4a3d1..b508016fb76d 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -9,6 +9,7 @@ #ifdef __KERNEL__ #include <linux/types.h> +#include <linux/uuid.h> typedef unsigned long kernel_ulong_t; #endif @@ -568,4 +569,12 @@ struct ipack_device_id { __u32 device; /* Device ID or IPACK_ANY_ID */ }; +#define MEI_CL_MODULE_PREFIX "mei:" +#define MEI_CL_NAME_SIZE 32 + +struct mei_cl_device_id { + char name[MEI_CL_NAME_SIZE]; + kernel_ulong_t driver_info; +}; + #endif /* LINUX_MOD_DEVICETABLE_H */ diff --git a/include/linux/platform_data/emif_plat.h b/include/linux/platform_data/emif_plat.h index 03378ca84061..5c19a2a647c4 100644 --- a/include/linux/platform_data/emif_plat.h +++ b/include/linux/platform_data/emif_plat.h @@ -40,6 +40,7 @@ /* Custom config requests */ #define EMIF_CUSTOM_CONFIG_LPMODE 0x00000001 #define EMIF_CUSTOM_CONFIG_TEMP_ALERT_POLL_INTERVAL 0x00000002 +#define EMIF_CUSTOM_CONFIG_EXTENDED_TEMP_PART 0x00000004 #ifndef __ASSEMBLY__ /** diff --git a/include/linux/ssbi.h b/include/linux/ssbi.h new file mode 100644 index 000000000000..44ef5da21470 --- /dev/null +++ b/include/linux/ssbi.h @@ -0,0 +1,38 @@ +/* Copyright (C) 2010 Google, Inc. + * Copyright (c) 2011, Code Aurora Forum. All rights reserved. + * Author: Dima Zavin <dima@android.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _LINUX_SSBI_H +#define _LINUX_SSBI_H + +#include <linux/types.h> + +struct ssbi_slave_info { + const char *name; + void *platform_data; +}; + +enum ssbi_controller_type { + MSM_SBI_CTRL_SSBI = 0, + MSM_SBI_CTRL_SSBI2, + MSM_SBI_CTRL_PMIC_ARBITER, +}; + +struct ssbi_platform_data { + struct ssbi_slave_info slave; + enum ssbi_controller_type controller_type; +}; + +int ssbi_write(struct device *dev, u16 addr, u8 *buf, int len); +int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len); +#endif diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h index 3bbbd78e1439..2d56e428506c 100644 --- a/include/pcmcia/ds.h +++ b/include/pcmcia/ds.h @@ -65,6 +65,18 @@ struct pcmcia_driver { int pcmcia_register_driver(struct pcmcia_driver *driver); void pcmcia_unregister_driver(struct pcmcia_driver *driver); +/** + * module_pcmcia_driver() - Helper macro for registering a pcmcia driver + * @__pcmcia_driver: pcmcia_driver struct + * + * Helper macro for pcmcia drivers which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only use + * this macro once, and calling it replaces module_init() and module_exit(). + */ +#define module_pcmcia_driver(__pcmcia_driver) \ + module_driver(__pcmcia_driver, pcmcia_register_driver, \ + pcmcia_unregister_driver) + /* for struct resource * array embedded in struct pcmcia_device */ enum { PCMCIA_IOPORT_0, diff --git a/include/uapi/linux/connector.h b/include/uapi/linux/connector.h index 8761a0349c74..4cb283505e45 100644 --- a/include/uapi/linux/connector.h +++ b/include/uapi/linux/connector.h @@ -44,8 +44,11 @@ #define CN_VAL_DRBD 0x1 #define CN_KVP_IDX 0x9 /* HyperV KVP */ #define CN_KVP_VAL 0x1 /* queries from the kernel */ +#define CN_VSS_IDX 0xA /* HyperV VSS */ +#define CN_VSS_VAL 0x1 /* queries from the kernel */ -#define CN_NETLINK_USERS 10 /* Highest index + 1 */ + +#define CN_NETLINK_USERS 11 /* Highest index + 1 */ /* * Maximum connector's message size. diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8fcced7823fa..7ff1536f01b8 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1397,6 +1397,7 @@ void split_page(struct page *page, unsigned int order) for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); } +EXPORT_SYMBOL_GPL(split_page); static int __isolate_free_page(struct page *page, unsigned int order) { diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c index b45260bfeaa0..e66d4d258e1a 100644 --- a/scripts/mod/devicetable-offsets.c +++ b/scripts/mod/devicetable-offsets.c @@ -174,5 +174,8 @@ int main(void) DEVID_FIELD(x86_cpu_id, model); DEVID_FIELD(x86_cpu_id, vendor); + DEVID(mei_cl_device_id); + DEVID_FIELD(mei_cl_device_id, name); + return 0; } diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 771ac17f635d..45f9a3377dcd 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -1133,6 +1133,18 @@ static int do_x86cpu_entry(const char *filename, void *symval, } ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry); +/* Looks like: mei:S */ +static int do_mei_entry(const char *filename, void *symval, + char *alias) +{ + DEF_FIELD_ADDR(symval, mei_cl_device_id, name); + + sprintf(alias, MEI_CL_MODULE_PREFIX "%s", *name); + + return 1; +} +ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry); + /* Does namelen bytes of name exactly match the symbol? */ static bool sym_is(const char *name, unsigned namelen, const char *symbol) { diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.c b/sound/pcmcia/pdaudiocf/pdaudiocf.c index f9b5229b2723..8f489de5c4c6 100644 --- a/sound/pcmcia/pdaudiocf/pdaudiocf.c +++ b/sound/pcmcia/pdaudiocf/pdaudiocf.c @@ -295,18 +295,5 @@ static struct pcmcia_driver pdacf_cs_driver = { .suspend = pdacf_suspend, .resume = pdacf_resume, #endif - }; - -static int __init init_pdacf(void) -{ - return pcmcia_register_driver(&pdacf_cs_driver); -} - -static void __exit exit_pdacf(void) -{ - pcmcia_unregister_driver(&pdacf_cs_driver); -} - -module_init(init_pdacf); -module_exit(exit_pdacf); +module_pcmcia_driver(pdacf_cs_driver); diff --git a/sound/pcmcia/vx/vxpocket.c b/sound/pcmcia/vx/vxpocket.c index 8f9350475c7b..d4db7ecaa6bf 100644 --- a/sound/pcmcia/vx/vxpocket.c +++ b/sound/pcmcia/vx/vxpocket.c @@ -367,16 +367,4 @@ static struct pcmcia_driver vxp_cs_driver = { .resume = vxp_resume, #endif }; - -static int __init init_vxpocket(void) -{ - return pcmcia_register_driver(&vxp_cs_driver); -} - -static void __exit exit_vxpocket(void) -{ - pcmcia_unregister_driver(&vxp_cs_driver); -} - -module_init(init_vxpocket); -module_exit(exit_vxpocket); +module_pcmcia_driver(vxp_cs_driver); diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index ac948a671ea6..e7d34711412c 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -364,6 +364,39 @@ int arizona_out_ev(struct snd_soc_dapm_widget *w, } EXPORT_SYMBOL_GPL(arizona_out_ev); +int arizona_hp_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, + int event) +{ + struct arizona_priv *priv = snd_soc_codec_get_drvdata(w->codec); + unsigned int mask = 1 << w->shift; + unsigned int val; + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + val = mask; + break; + case SND_SOC_DAPM_PRE_PMD: + val = 0; + break; + default: + return -EINVAL; + } + + /* Store the desired state for the HP outputs */ + priv->arizona->hp_ena &= ~mask; + priv->arizona->hp_ena |= val; + + /* Force off if HPDET magic is active */ + if (priv->arizona->hpdet_magic) + val = 0; + + snd_soc_update_bits(w->codec, ARIZONA_OUTPUT_ENABLES_1, mask, val); + + return arizona_out_ev(w, kcontrol, event); +} +EXPORT_SYMBOL_GPL(arizona_hp_ev); + static unsigned int arizona_sysclk_48k_rates[] = { 6144000, 12288000, diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h index 116372c91f5d..13dd2916b721 100644 --- a/sound/soc/codecs/arizona.h +++ b/sound/soc/codecs/arizona.h @@ -184,6 +184,9 @@ extern int arizona_in_ev(struct snd_soc_dapm_widget *w, extern int arizona_out_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event); +extern int arizona_hp_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, + int event); extern int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source, unsigned int freq, int dir); diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c index 34d0201d6a78..15bc31f1abb1 100644 --- a/sound/soc/codecs/wm5102.c +++ b/sound/soc/codecs/wm5102.c @@ -1131,11 +1131,11 @@ ARIZONA_DSP_WIDGETS(DSP1, "DSP1"), SND_SOC_DAPM_VALUE_MUX("AEC Loopback", ARIZONA_DAC_AEC_CONTROL_1, ARIZONA_AEC_LOOPBACK_ENA, 0, &wm5102_aec_loopback_mux), -SND_SOC_DAPM_PGA_E("OUT1L", ARIZONA_OUTPUT_ENABLES_1, - ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev, +SND_SOC_DAPM_PGA_E("OUT1L", SND_SOC_NOPM, + ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev, SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU), -SND_SOC_DAPM_PGA_E("OUT1R", ARIZONA_OUTPUT_ENABLES_1, - ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_out_ev, +SND_SOC_DAPM_PGA_E("OUT1R", SND_SOC_NOPM, + ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev, SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_PGA_E("OUT2L", ARIZONA_OUTPUT_ENABLES_1, ARIZONA_OUT2L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev, diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index cdeb301da1f6..7841b42a819c 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -551,11 +551,11 @@ SND_SOC_DAPM_AIF_IN("AIF3RX1", NULL, 0, SND_SOC_DAPM_AIF_IN("AIF3RX2", NULL, 0, ARIZONA_AIF3_RX_ENABLES, ARIZONA_AIF3RX2_ENA_SHIFT, 0), -SND_SOC_DAPM_PGA_E("OUT1L", ARIZONA_OUTPUT_ENABLES_1, - ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev, +SND_SOC_DAPM_PGA_E("OUT1L", SND_SOC_NOPM, + ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev, SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU), -SND_SOC_DAPM_PGA_E("OUT1R", ARIZONA_OUTPUT_ENABLES_1, - ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_out_ev, +SND_SOC_DAPM_PGA_E("OUT1R", SND_SOC_NOPM, + ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev, SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_PGA_E("OUT2L", ARIZONA_OUTPUT_ENABLES_1, ARIZONA_OUT2L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev, diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index c800ea4c8bf9..5a1f6489d185 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -102,6 +102,10 @@ static struct utsname uts_buf; #define MAX_FILE_NAME 100 #define ENTRIES_PER_BLOCK 50 +#ifndef SOL_NETLINK +#define SOL_NETLINK 270 +#endif + struct kvp_record { char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; @@ -1407,7 +1411,7 @@ netlink_send(int fd, struct cn_msg *msg) int main(void) { - int fd, len, sock_opt; + int fd, len, nl_group; int error; struct cn_msg *message; struct pollfd pfd; @@ -1443,7 +1447,7 @@ int main(void) addr.nl_family = AF_NETLINK; addr.nl_pad = 0; addr.nl_pid = 0; - addr.nl_groups = CN_KVP_IDX; + addr.nl_groups = 0; error = bind(fd, (struct sockaddr *)&addr, sizeof(addr)); @@ -1452,8 +1456,8 @@ int main(void) close(fd); exit(EXIT_FAILURE); } - sock_opt = addr.nl_groups; - setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt)); + nl_group = CN_KVP_IDX; + setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group)); /* * Register ourselves with the kernel. */ @@ -1499,6 +1503,10 @@ int main(void) } incoming_msg = (struct nlmsghdr *)kvp_recv_buffer; + + if (incoming_msg->nlmsg_type != NLMSG_DONE) + continue; + incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg); hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; diff --git a/tools/hv/hv_vss_daemon.c b/tools/hv/hv_vss_daemon.c new file mode 100644 index 000000000000..fea03a3edaf4 --- /dev/null +++ b/tools/hv/hv_vss_daemon.c @@ -0,0 +1,249 @@ +/* + * An implementation of the host initiated guest snapshot for Hyper-V. + * + * + * Copyright (C) 2013, Microsoft, Inc. + * Author : K. Y. Srinivasan <kys@microsoft.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for more + * details. + * + */ + + +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/poll.h> +#include <sys/ioctl.h> +#include <linux/types.h> +#include <fcntl.h> +#include <stdio.h> +#include <mntent.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> +#include <arpa/inet.h> +#include <linux/fs.h> +#include <linux/connector.h> +#include <linux/hyperv.h> +#include <linux/netlink.h> +#include <syslog.h> + +static char vss_recv_buffer[4096]; +static char vss_send_buffer[4096]; +static struct sockaddr_nl addr; + +#ifndef SOL_NETLINK +#define SOL_NETLINK 270 +#endif + + +static int vss_do_freeze(char *dir, unsigned int cmd, char *fs_op) +{ + int ret, fd = open(dir, O_RDONLY); + + if (fd < 0) + return 1; + ret = ioctl(fd, cmd, 0); + syslog(LOG_INFO, "VSS: %s of %s: %s\n", fs_op, dir, strerror(errno)); + close(fd); + return !!ret; +} + +static int vss_operate(int operation) +{ + char *fs_op; + char match[] = "/dev/"; + FILE *mounts; + struct mntent *ent; + unsigned int cmd; + int error = 0, root_seen = 0; + + switch (operation) { + case VSS_OP_FREEZE: + cmd = FIFREEZE; + fs_op = "freeze"; + break; + case VSS_OP_THAW: + cmd = FITHAW; + fs_op = "thaw"; + break; + default: + return -1; + } + + mounts = setmntent("/proc/mounts", "r"); + if (mounts == NULL) + return -1; + + while ((ent = getmntent(mounts))) { + if (strncmp(ent->mnt_fsname, match, strlen(match))) + continue; + if (strcmp(ent->mnt_type, "iso9660") == 0) + continue; + if (strcmp(ent->mnt_dir, "/") == 0) { + root_seen = 1; + continue; + } + error |= vss_do_freeze(ent->mnt_dir, cmd, fs_op); + } + endmntent(mounts); + + if (root_seen) { + error |= vss_do_freeze("/", cmd, fs_op); + } + + return error; +} + +static int netlink_send(int fd, struct cn_msg *msg) +{ + struct nlmsghdr *nlh; + unsigned int size; + struct msghdr message; + char buffer[64]; + struct iovec iov[2]; + + size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len); + + nlh = (struct nlmsghdr *)buffer; + nlh->nlmsg_seq = 0; + nlh->nlmsg_pid = getpid(); + nlh->nlmsg_type = NLMSG_DONE; + nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh)); + nlh->nlmsg_flags = 0; + + iov[0].iov_base = nlh; + iov[0].iov_len = sizeof(*nlh); + + iov[1].iov_base = msg; + iov[1].iov_len = size; + + memset(&message, 0, sizeof(message)); + message.msg_name = &addr; + message.msg_namelen = sizeof(addr); + message.msg_iov = iov; + message.msg_iovlen = 2; + + return sendmsg(fd, &message, 0); +} + +int main(void) +{ + int fd, len, nl_group; + int error; + struct cn_msg *message; + struct pollfd pfd; + struct nlmsghdr *incoming_msg; + struct cn_msg *incoming_cn_msg; + int op; + struct hv_vss_msg *vss_msg; + + if (daemon(1, 0)) + return 1; + + openlog("Hyper-V VSS", 0, LOG_USER); + syslog(LOG_INFO, "VSS starting; pid is:%d", getpid()); + + fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); + if (fd < 0) { + syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd); + exit(EXIT_FAILURE); + } + addr.nl_family = AF_NETLINK; + addr.nl_pad = 0; + addr.nl_pid = 0; + addr.nl_groups = 0; + + + error = bind(fd, (struct sockaddr *)&addr, sizeof(addr)); + if (error < 0) { + syslog(LOG_ERR, "bind failed; error:%d", error); + close(fd); + exit(EXIT_FAILURE); + } + nl_group = CN_VSS_IDX; + setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group)); + /* + * Register ourselves with the kernel. + */ + message = (struct cn_msg *)vss_send_buffer; + message->id.idx = CN_VSS_IDX; + message->id.val = CN_VSS_VAL; + message->ack = 0; + vss_msg = (struct hv_vss_msg *)message->data; + vss_msg->vss_hdr.operation = VSS_OP_REGISTER; + + message->len = sizeof(struct hv_vss_msg); + + len = netlink_send(fd, message); + if (len < 0) { + syslog(LOG_ERR, "netlink_send failed; error:%d", len); + close(fd); + exit(EXIT_FAILURE); + } + + pfd.fd = fd; + + while (1) { + struct sockaddr *addr_p = (struct sockaddr *) &addr; + socklen_t addr_l = sizeof(addr); + pfd.events = POLLIN; + pfd.revents = 0; + poll(&pfd, 1, -1); + + len = recvfrom(fd, vss_recv_buffer, sizeof(vss_recv_buffer), 0, + addr_p, &addr_l); + + if (len < 0) { + syslog(LOG_ERR, "recvfrom failed; pid:%u error:%d %s", + addr.nl_pid, errno, strerror(errno)); + close(fd); + return -1; + } + + if (addr.nl_pid) { + syslog(LOG_WARNING, + "Received packet from untrusted pid:%u", + addr.nl_pid); + continue; + } + + incoming_msg = (struct nlmsghdr *)vss_recv_buffer; + + if (incoming_msg->nlmsg_type != NLMSG_DONE) + continue; + + incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg); + vss_msg = (struct hv_vss_msg *)incoming_cn_msg->data; + op = vss_msg->vss_hdr.operation; + error = HV_S_OK; + + switch (op) { + case VSS_OP_FREEZE: + case VSS_OP_THAW: + error = vss_operate(op); + if (error) + error = HV_E_FAIL; + break; + default: + syslog(LOG_ERR, "Illegal op:%d\n", op); + } + vss_msg->error = error; + len = netlink_send(fd, incoming_cn_msg); + if (len < 0) { + syslog(LOG_ERR, "net_link send failed; error:%d", len); + exit(EXIT_FAILURE); + } + } + +} |