From 3ad0b02e4c1d5feba44b8ff48dccd1ba61a826b0 Mon Sep 17 00:00:00 2001 From: Venki Pallipadi Date: Wed, 22 Oct 2008 16:34:52 -0700 Subject: i7300_idle: Disable ioat channel only on platforms where ile driver can load Based on input from Andi Kleen: share the platform detection code with ioat_dma and disable the channel in dma engine only for specific platforms. Signed-off-by: Venkatesh Pallipadi Signed-off-by: Len Brown --- drivers/dma/ioat_dma.c | 5 ++- drivers/idle/i7300_idle.c | 72 ++-------------------------------------- include/linux/i7300_idle.h | 83 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 89 insertions(+), 71 deletions(-) create mode 100644 include/linux/i7300_idle.h diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c index f8396cafa05f..fd1631d0a795 100644 --- a/drivers/dma/ioat_dma.c +++ b/drivers/dma/ioat_dma.c @@ -33,6 +33,7 @@ #include #include #include +#include #include "ioatdma.h" #include "ioatdma_registers.h" #include "ioatdma_hw.h" @@ -172,7 +173,9 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device) xfercap = (xfercap_scale == 0 ? -1 : (1UL << xfercap_scale)); #if CONFIG_I7300_IDLE_IOAT_CHANNEL - device->common.chancnt--; + if (i7300_idle_platform_probe(NULL, NULL) == 0) { + device->common.chancnt--; + } #endif for (i = 0; i < device->common.chancnt; i++) { ioat_chan = kzalloc(sizeof(*ioat_chan), GFP_KERNEL); diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c index 59d1bbc3cd3c..79d47f284cd6 100644 --- a/drivers/idle/i7300_idle.c +++ b/drivers/idle/i7300_idle.c @@ -25,6 +25,7 @@ #include #include #include +#include #include @@ -505,77 +506,8 @@ static struct notifier_block i7300_idle_nb = { .notifier_call = i7300_idle_notifier, }; -/* - * I/O AT controls (PCI bus 0 device 8 function 0) - * DIMM controls (PCI bus 0 device 16 function 1) - */ -#define IOAT_BUS 0 -#define IOAT_DEVFN PCI_DEVFN(8, 0) -#define MEMCTL_BUS 0 -#define MEMCTL_DEVFN PCI_DEVFN(16, 1) - -struct fbd_ioat { - unsigned int vendor; - unsigned int ioat_dev; -}; - -/* - * The i5000 chip-set has the same hooks as the i7300 - * but support is disabled by default because this driver - * has not been validated on that platform. - */ -#define SUPPORT_I5000 0 - -static const struct fbd_ioat fbd_ioat_list[] = { - {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB}, -#if SUPPORT_I5000 - {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT}, -#endif - {0, 0} -}; - -/* table of devices that work with this driver */ -static const struct pci_device_id pci_tbl[] = { - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) }, -#if SUPPORT_I5000 - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, -#endif - { } /* Terminating entry */ -}; - MODULE_DEVICE_TABLE(pci, pci_tbl); -/* Check for known platforms with I/O-AT */ -static int __init i7300_idle_platform_probe(void) -{ - int i; - - fbd_dev = pci_get_bus_and_slot(MEMCTL_BUS, MEMCTL_DEVFN); - if (!fbd_dev) - return -ENODEV; - - for (i = 0; pci_tbl[i].vendor != 0; i++) { - if (fbd_dev->vendor == pci_tbl[i].vendor && - fbd_dev->device == pci_tbl[i].device) { - break; - } - } - if (pci_tbl[i].vendor == 0) - return -ENODEV; - - ioat_dev = pci_get_bus_and_slot(IOAT_BUS, IOAT_DEVFN); - if (!ioat_dev) - return -ENODEV; - - for (i = 0; fbd_ioat_list[i].vendor != 0; i++) { - if (ioat_dev->vendor == fbd_ioat_list[i].vendor && - ioat_dev->device == fbd_ioat_list[i].ioat_dev) { - return 0; - } - } - return -ENODEV; -} - int stats_open_generic(struct inode *inode, struct file *fp) { fp->private_data = inode->i_private; @@ -617,7 +549,7 @@ static int __init i7300_idle_init(void) cpus_clear(idle_cpumask); total_us = 0; - if (i7300_idle_platform_probe()) + if (i7300_idle_platform_probe(&fbd_dev, &ioat_dev)) return -ENODEV; if (i7300_idle_thrt_save()) diff --git a/include/linux/i7300_idle.h b/include/linux/i7300_idle.h new file mode 100644 index 000000000000..05a80c44513c --- /dev/null +++ b/include/linux/i7300_idle.h @@ -0,0 +1,83 @@ + +#ifndef I7300_IDLE_H +#define I7300_IDLE_H + +#include + +/* + * I/O AT controls (PCI bus 0 device 8 function 0) + * DIMM controls (PCI bus 0 device 16 function 1) + */ +#define IOAT_BUS 0 +#define IOAT_DEVFN PCI_DEVFN(8, 0) +#define MEMCTL_BUS 0 +#define MEMCTL_DEVFN PCI_DEVFN(16, 1) + +struct fbd_ioat { + unsigned int vendor; + unsigned int ioat_dev; +}; + +/* + * The i5000 chip-set has the same hooks as the i7300 + * but support is disabled by default because this driver + * has not been validated on that platform. + */ +#define SUPPORT_I5000 0 + +static const struct fbd_ioat fbd_ioat_list[] = { + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB}, +#if SUPPORT_I5000 + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT}, +#endif + {0, 0} +}; + +/* table of devices that work with this driver */ +static const struct pci_device_id pci_tbl[] = { + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) }, +#if SUPPORT_I5000 + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, +#endif + { } /* Terminating entry */ +}; + +/* Check for known platforms with I/O-AT */ +static inline int i7300_idle_platform_probe(struct pci_dev **fbd_dev, + struct pci_dev **ioat_dev) +{ + int i; + struct pci_dev *memdev, *dmadev; + + memdev = pci_get_bus_and_slot(MEMCTL_BUS, MEMCTL_DEVFN); + if (!memdev) + return -ENODEV; + + for (i = 0; pci_tbl[i].vendor != 0; i++) { + if (memdev->vendor == pci_tbl[i].vendor && + memdev->device == pci_tbl[i].device) { + break; + } + } + if (pci_tbl[i].vendor == 0) + return -ENODEV; + + dmadev = pci_get_bus_and_slot(IOAT_BUS, IOAT_DEVFN); + if (!dmadev) + return -ENODEV; + + for (i = 0; fbd_ioat_list[i].vendor != 0; i++) { + if (dmadev->vendor == fbd_ioat_list[i].vendor && + dmadev->device == fbd_ioat_list[i].ioat_dev) { + if (fbd_dev) + *fbd_dev = memdev; + if (ioat_dev) + *ioat_dev = dmadev; + + return 0; + } + } + return -ENODEV; +} + +#endif -- cgit v1.2.3 From 33093e186c8f80b443fafb1d347a140bdd2b86c6 Mon Sep 17 00:00:00 2001 From: Venki Pallipadi Date: Wed, 22 Oct 2008 16:51:03 -0700 Subject: i7300_idle: Cleanup based review comments Cleanup of i7300 idle driver based on review comments from Randy Dunlap, Andi Kleen and Len Brown. Signed-off-by: Venkatesh Pallipadi Signed-off-by: Len Brown --- drivers/idle/Kconfig | 11 ++++++----- drivers/idle/i7300_idle.c | 33 ++++++++++++++++++--------------- 2 files changed, 24 insertions(+), 20 deletions(-) diff --git a/drivers/idle/Kconfig b/drivers/idle/Kconfig index f5b26dd579e4..108264de0ac9 100644 --- a/drivers/idle/Kconfig +++ b/drivers/idle/Kconfig @@ -5,12 +5,13 @@ config I7300_IDLE_IOAT_CHANNEL bool config I7300_IDLE - tristate "Intel chipset idle power saving driver" + tristate "Intel chipset idle memory power saving driver" select I7300_IDLE_IOAT_CHANNEL - depends on X86_64 + depends on X86_64 && EXPERIMENTAL help - Enable idle power savings with certain Intel server chipsets. - The chipset must have I/O AT support, such as the Intel 7300. - The power savings depends on the type and quantity of DRAM devices. + Enable memory power savings when idle with certain Intel server + chipsets. The chipset must have I/O AT support, such as the + Intel 7300. The power savings depends on the type and quantity of + DRAM devices. endmenu diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c index 79d47f284cd6..fb176f6ef9f8 100644 --- a/drivers/idle/i7300_idle.c +++ b/drivers/idle/i7300_idle.c @@ -35,6 +35,8 @@ #define I7300_IDLE_DRIVER_VERSION "1.55" #define I7300_PRINT "i7300_idle:" +#define MAX_STOP_RETRIES 10 + static int debug; module_param_named(debug, debug, uint, 0644); MODULE_PARM_DESC(debug, "Enable debug printks in this driver"); @@ -47,12 +49,12 @@ MODULE_PARM_DESC(debug, "Enable debug printks in this driver"); * 0 = No throttling * 1 = Throttle when > 4 activations per eval window (Maximum throttling) * 2 = Throttle when > 8 activations - * 168 = Throttle when > 168 activations (Minimum throttling) + * 168 = Throttle when > 672 activations (Minimum throttling) */ -#define MAX_THRTLWLIMIT 168 -static uint i7300_idle_thrtlowlm = 1; -module_param_named(thrtlwlimit, i7300_idle_thrtlowlm, uint, 0644); -MODULE_PARM_DESC(thrtlwlimit, +#define MAX_THROTTLE_LOW_LIMIT 168 +static uint throttle_low_limit = 1; +module_param_named(throttle_low_limit, throttle_low_limit, uint, 0644); +MODULE_PARM_DESC(throttle_low_limit, "Value for THRTLOWLM activation field " "(0 = disable throttle, 1 = Max throttle, 168 = Min throttle)"); @@ -111,9 +113,9 @@ static int i7300_idle_ioat_start(void) static void i7300_idle_ioat_stop(void) { int i; - u8 sts; + u64 sts; - for (i = 0; i < 5; i++) { + for (i = 0; i < MAX_STOP_RETRIES; i++) { writeb(IOAT_CHANCMD_RESET, ioat_chanbase + IOAT1_CHANCMD_OFFSET); @@ -127,9 +129,10 @@ static void i7300_idle_ioat_stop(void) } - if (i == 5) - dprintk("failed to suspend+reset I/O AT after 5 retries\n"); - + if (i == MAX_STOP_RETRIES) { + dprintk("failed to stop I/O AT after %d retries\n", + MAX_STOP_RETRIES); + } } /* Test I/O AT by copying 1024 byte from 2k to 1k */ @@ -276,7 +279,7 @@ static void __exit i7300_idle_ioat_exit(void) i7300_idle_ioat_stop(); /* Wait for a while for the channel to halt before releasing */ - for (i = 0; i < 10; i++) { + for (i = 0; i < MAX_STOP_RETRIES; i++) { writeb(IOAT_CHANCMD_RESET, ioat_chanbase + IOAT1_CHANCMD_OFFSET); @@ -390,9 +393,9 @@ static void i7300_idle_start(void) new_ctl = i7300_idle_thrtctl_saved & ~DIMM_THRTCTL_THRMHUNT; pci_write_config_byte(fbd_dev, DIMM_THRTCTL, new_ctl); - limit = i7300_idle_thrtlowlm; - if (unlikely(limit > MAX_THRTLWLIMIT)) - limit = MAX_THRTLWLIMIT; + limit = throttle_low_limit; + if (unlikely(limit > MAX_THROTTLE_LOW_LIMIT)) + limit = MAX_THROTTLE_LOW_LIMIT; pci_write_config_byte(fbd_dev, DIMM_THRTLOW, limit); @@ -441,7 +444,7 @@ static int i7300_idle_notifier(struct notifier_block *nb, unsigned long val, static ktime_t idle_begin_time; static int time_init = 1; - if (!i7300_idle_thrtlowlm) + if (!throttle_low_limit) return 0; if (unlikely(time_init)) { -- cgit v1.2.3 From f371be6352cdde3df2253b76acb979480e93ce4f Mon Sep 17 00:00:00 2001 From: Venki Pallipadi Date: Thu, 23 Oct 2008 15:39:06 -0700 Subject: i7300_idle: Fix compile warning CONFIG_I7300_IDLE_IOAT_CHANNEL not defined When I7300_idle driver is not configured, there is a compile time warning about IDLE_IOAT_CHANNEL not defined. Fix it. Reported-by: Suresh Siddha Reported-by: Arjan van de Ven Signed-off-by: Venkatesh Pallipadi Signed-off-by: Len Brown --- drivers/dma/ioat_dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c index fd1631d0a795..c6d0ca24eedc 100644 --- a/drivers/dma/ioat_dma.c +++ b/drivers/dma/ioat_dma.c @@ -172,7 +172,7 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device) xfercap_scale = readb(device->reg_base + IOAT_XFERCAP_OFFSET); xfercap = (xfercap_scale == 0 ? -1 : (1UL << xfercap_scale)); -#if CONFIG_I7300_IDLE_IOAT_CHANNEL +#ifdef CONFIG_I7300_IDLE_IOAT_CHANNEL if (i7300_idle_platform_probe(NULL, NULL) == 0) { device->common.chancnt--; } -- cgit v1.2.3 From 16be87ea170ae6cfaa9f47f79d14f7577d8cb420 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Fri, 24 Oct 2008 17:22:04 +0800 Subject: ACPI: cpufreq, processor: fix compile error in drivers/acpi/processor_perflib.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When trying to build 2.6.28-rc1 on ia64, make aborts with: CC drivers/acpi/processor_perflib.o drivers/acpi/processor_perflib.c:41:28: error: asm/cpufeature.h: No such file or directory drivers/acpi/processor_perflib.c: In function ‘acpi_processor_get_performance_info’: drivers/acpi/processor_perflib.c:364: error: implicit declaration of function ‘boot_cpu_has’ drivers/acpi/processor_perflib.c:364: error: ‘X86_FEATURE_EST’ undeclared (first use in this function) drivers/acpi/processor_perflib.c:364: error: (Each undeclared identifier is reported only once drivers/acpi/processor_perflib.c:364: error: for each function it appears in.) make[2]: *** [drivers/acpi/processor_perflib.o] Error 1 make[1]: *** [drivers/acpi] Error 2 make: *** [drivers] Error 2 this patch fix it. Signed-off-by: Miao Xie Acked-by: Thomas Renninger Signed-off-by: Len Brown --- drivers/acpi/processor_perflib.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index dc98f7a6f2c4..dbcf260ea93f 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -38,7 +38,10 @@ #include #endif + +#ifdef CONFIG_X86 #include +#endif #include #include @@ -360,11 +363,13 @@ static int acpi_processor_get_performance_info(struct acpi_processor *pr) * the BIOS is older than the CPU and does not know its frequencies */ update_bios: +#ifdef CONFIG_X86 if (ACPI_SUCCESS(acpi_get_handle(pr->handle, "_PPC", &handle))){ if(boot_cpu_has(X86_FEATURE_EST)) printk(KERN_WARNING FW_BUG "BIOS needs update for CPU " "frequency support\n"); } +#endif return result; } -- cgit v1.2.3 From df316e939100e789b3c5d4d102619ccf5834bd00 Mon Sep 17 00:00:00 2001 From: Guillem Jover Date: Fri, 24 Oct 2008 00:28:33 +0300 Subject: ACPI: Always report a sync event after a lid state change MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently not always an EV_SYN event is reported to userland after the EV_SW SW_LID event has been sent. This is easy to verify by using “input-events” from input-utils and just closing and opening the lid. Signed-off-by: Guillem Jover Signed-off-by: Len Brown --- drivers/acpi/button.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 9d568d417eaa..cb046c3fc3f2 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -262,6 +262,7 @@ static int acpi_lid_send_state(struct acpi_button *button) return -ENODEV; /* input layer checks if event is redundant */ input_report_switch(button->input, SW_LID, !state); + input_sync(button->input); return 0; } @@ -285,8 +286,8 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data) input_report_key(input, keycode, 1); input_sync(input); input_report_key(input, keycode, 0); + input_sync(input); } - input_sync(input); acpi_bus_generate_proc_event(button->device, event, ++button->pushed); -- cgit v1.2.3 From cab08969188e2da09923fe9c4a99ec9b934b0708 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 24 Oct 2008 15:39:47 -0400 Subject: toshiba_acpi: always call input_sync() after input_report_switch() Signed-off-by: Len Brown --- drivers/acpi/toshiba_acpi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/acpi/toshiba_acpi.c index 2a632f8b7a05..66aac06f2ac5 100644 --- a/drivers/acpi/toshiba_acpi.c +++ b/drivers/acpi/toshiba_acpi.c @@ -371,6 +371,7 @@ static void bt_poll_rfkill(struct input_polled_dev *poll_dev) RFKILL_STATE_HARD_BLOCKED); input_report_switch(poll_dev->input, SW_RFKILL_ALL, new_rfk_state); + input_sync(poll_dev->input); } } @@ -842,6 +843,7 @@ static int __init toshiba_acpi_init(void) set_bit(EV_SW, toshiba_acpi.poll_dev->input->evbit); set_bit(SW_RFKILL_ALL, toshiba_acpi.poll_dev->input->swbit); input_report_switch(toshiba_acpi.poll_dev->input, SW_RFKILL_ALL, TRUE); + input_sync(toshiba_acpi.poll_dev->input); ret = input_register_polled_device(toshiba_acpi.poll_dev); if (ret) { -- cgit v1.2.3 From 92daa7b53b76984565dfdfda5d9c679884121fb2 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 23 Oct 2008 21:46:43 +0200 Subject: ACPI suspend: build fix for ACPI_SLEEP=n && XEN_SAVE_RESTORE=y. Signed-off-by: Rafael J. Wysocki Signed-off-by: Len Brown --- drivers/acpi/sleep/main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c index 26571bafb158..80c0868d0480 100644 --- a/drivers/acpi/sleep/main.c +++ b/drivers/acpi/sleep/main.c @@ -163,6 +163,8 @@ static void acpi_pm_end(void) acpi_target_sleep_state = ACPI_STATE_S0; acpi_sleep_tts_switch(acpi_target_sleep_state); } +#else /* !CONFIG_ACPI_SLEEP */ +#define acpi_target_sleep_state ACPI_STATE_S0 #endif /* CONFIG_ACPI_SLEEP */ #ifdef CONFIG_SUSPEND -- cgit v1.2.3 From f8123381bae8d581d81f24b55719db3d9a6a262c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 24 Oct 2008 21:50:31 +0200 Subject: ACPI: Oops in ACPI with git latest ACPI Warning (nseval-0168): Insufficient arguments - method [_OSC] needs 5, found 4 [20080926] ACPI Warning (nspredef-0252): \_SB_.PCI0._OSC: Parameter count mismatch - ASL declared 5, expected 4 [20080926] ACPI Error (nspredef-0163): \_SB_.PCI0._OSC: Missing expected return value [20080926] BUG: unable to handle kernel NULL pointer dereference at 00000000 IP: [] acpi_run_osc+0xa1/0x170 Signed-off-by: Rafael J. Wysocki Tested-by: James Bottomley Signed-off-by: Len Brown --- drivers/pci/pci-acpi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index dfe7c8e1b185..b3a63edb6901 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -83,6 +83,9 @@ static acpi_status acpi_run_osc(acpi_handle handle, if (ACPI_FAILURE(status)) return status; + if (!output.length) + return AE_NULL_OBJECT; + out_obj = output.pointer; if (out_obj->type != ACPI_TYPE_BUFFER) { printk(KERN_DEBUG "Evaluate _OSC returns wrong type\n"); -- cgit v1.2.3 From 438f8de46bc261b35d84771ae9992cfff3ff4dd8 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Sat, 25 Oct 2008 03:52:16 -0400 Subject: leds-hp-disk: fix build warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drivers/leds/leds-hp-disk.c:59: warning: passing argument 4 of ‘acpi_evaluate_integer’ from incompatible pointer type Signed-off-by: Len Brown --- drivers/leds/leds-hp-disk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/leds/leds-hp-disk.c b/drivers/leds/leds-hp-disk.c index 53a25b1c2dae..74645ab15660 100644 --- a/drivers/leds/leds-hp-disk.c +++ b/drivers/leds/leds-hp-disk.c @@ -49,7 +49,7 @@ static struct acpi_hpled adev; static acpi_status hpled_acpi_write(acpi_handle handle, int reg) { - unsigned long ret; /* Not used when writing */ + unsigned long long ret; /* Not used when writing */ union acpi_object in_obj[1]; struct acpi_object_list args = { 1, in_obj }; -- cgit v1.2.3