diff options
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r-- | drivers/s390/cio/blacklist.c | 1 | ||||
-rw-r--r-- | drivers/s390/cio/chp.c | 1 | ||||
-rw-r--r-- | drivers/s390/cio/chsc.c | 29 | ||||
-rw-r--r-- | drivers/s390/cio/chsc_sch.c | 3 | ||||
-rw-r--r-- | drivers/s390/cio/cio.c | 18 | ||||
-rw-r--r-- | drivers/s390/cio/css.c | 16 | ||||
-rw-r--r-- | drivers/s390/cio/device.c | 5 | ||||
-rw-r--r-- | drivers/s390/cio/device_fsm.c | 2 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_debug.c | 1 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_main.c | 4 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 1 |
11 files changed, 42 insertions, 39 deletions
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c index 7eab9ab9f406..13cb60162e42 100644 --- a/drivers/s390/cio/blacklist.c +++ b/drivers/s390/cio/blacklist.c @@ -14,7 +14,6 @@ #include <linux/init.h> #include <linux/vmalloc.h> -#include <linux/slab.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/ctype.h> diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index c268a2e5b7c3..1d16189f2f2d 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -15,6 +15,7 @@ #include <linux/wait.h> #include <linux/mutex.h> #include <linux/errno.h> +#include <linux/slab.h> #include <asm/chpid.h> #include <asm/sclp.h> #include <asm/crw.h> diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 4038f5b4f144..ce7cb87479fe 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -29,6 +29,7 @@ #include "chsc.h" static void *sei_page; +static DEFINE_SPINLOCK(sda_lock); /** * chsc_error_from_response() - convert a chsc response to an error @@ -832,11 +833,10 @@ void __init chsc_free_sei_area(void) kfree(sei_page); } -int __init -chsc_enable_facility(int operation_code) +int chsc_enable_facility(int operation_code) { int ret; - struct { + static struct { struct chsc_header request; u8 reserved1:4; u8 format:4; @@ -849,33 +849,32 @@ chsc_enable_facility(int operation_code) u32 reserved5:4; u32 format2:4; u32 reserved6:24; - } __attribute__ ((packed)) *sda_area; + } __attribute__ ((packed, aligned(4096))) sda_area; - sda_area = (void *)get_zeroed_page(GFP_KERNEL|GFP_DMA); - if (!sda_area) - return -ENOMEM; - sda_area->request.length = 0x0400; - sda_area->request.code = 0x0031; - sda_area->operation_code = operation_code; + spin_lock(&sda_lock); + memset(&sda_area, 0, sizeof(sda_area)); + sda_area.request.length = 0x0400; + sda_area.request.code = 0x0031; + sda_area.operation_code = operation_code; - ret = chsc(sda_area); + ret = chsc(&sda_area); if (ret > 0) { ret = (ret == 3) ? -ENODEV : -EBUSY; goto out; } - switch (sda_area->response.code) { + switch (sda_area.response.code) { case 0x0101: ret = -EOPNOTSUPP; break; default: - ret = chsc_error_from_response(sda_area->response.code); + ret = chsc_error_from_response(sda_area.response.code); } if (ret != 0) CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n", - operation_code, sda_area->response.code); + operation_code, sda_area.response.code); out: - free_page((unsigned long)sda_area); + spin_unlock(&sda_lock); return ret; } diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c index 852612f5dba0..3b6f4adc5094 100644 --- a/drivers/s390/cio/chsc_sch.c +++ b/drivers/s390/cio/chsc_sch.c @@ -7,6 +7,7 @@ * */ +#include <linux/slab.h> #include <linux/device.h> #include <linux/module.h> #include <linux/uaccess.h> @@ -123,7 +124,7 @@ static int chsc_subchannel_prepare(struct subchannel *sch) * since we don't have a way to clear the subchannel and * cannot disable it with a request running. */ - cc = stsch(sch->schid, &schib); + cc = stsch_err(sch->schid, &schib); if (!cc && scsw_stctl(&schib.scsw)) return -EAGAIN; return 0; diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index f736cdcf08ad..5feea1a371e1 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -361,7 +361,7 @@ int cio_commit_config(struct subchannel *sch) struct schib schib; int ccode, retry, ret = 0; - if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib)) + if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib)) return -ENODEV; for (retry = 0; retry < 5; retry++) { @@ -372,7 +372,7 @@ int cio_commit_config(struct subchannel *sch) return ccode; switch (ccode) { case 0: /* successful */ - if (stsch(sch->schid, &schib) || + if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib)) return -ENODEV; if (cio_check_config(sch, &schib)) { @@ -404,7 +404,7 @@ int cio_update_schib(struct subchannel *sch) { struct schib schib; - if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib)) + if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib)) return -ENODEV; memcpy(&sch->schib, &schib, sizeof(schib)); @@ -771,7 +771,7 @@ cio_get_console_sch_no(void) if (console_irq != -1) { /* VM provided us with the irq number of the console. */ schid.sch_no = console_irq; - if (stsch(schid, &console_subchannel.schib) != 0 || + if (stsch_err(schid, &console_subchannel.schib) != 0 || (console_subchannel.schib.pmcw.st != SUBCHANNEL_TYPE_IO) || !console_subchannel.schib.pmcw.dnv) return -1; @@ -863,10 +863,10 @@ __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib) cc = 0; for (retry=0;retry<3;retry++) { schib->pmcw.ena = 0; - cc = msch(schid, schib); + cc = msch_err(schid, schib); if (cc) return (cc==3?-ENODEV:-EBUSY); - if (stsch(schid, schib) || !css_sch_is_valid(schib)) + if (stsch_err(schid, schib) || !css_sch_is_valid(schib)) return -ENODEV; if (!schib->pmcw.ena) return 0; @@ -913,7 +913,7 @@ static int stsch_reset(struct subchannel_id schid, struct schib *addr) pgm_check_occured = 0; s390_base_pgm_handler_fn = cio_reset_pgm_check_handler; - rc = stsch(schid, addr); + rc = stsch_err(schid, addr); s390_base_pgm_handler_fn = NULL; /* The program check handler could have changed pgm_check_occured. */ @@ -950,7 +950,7 @@ static int __shutdown_subchannel_easy(struct subchannel_id schid, void *data) /* No default clear strategy */ break; } - stsch(schid, &schib); + stsch_err(schid, &schib); __disable_subchannel_easy(schid, &schib); } out: @@ -1086,7 +1086,7 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo) schid = *(struct subchannel_id *)&S390_lowcore.subchannel_id; if (!schid.one) return -ENODEV; - if (stsch(schid, &schib)) + if (stsch_err(schid, &schib)) return -ENODEV; if (schib.pmcw.st != SUBCHANNEL_TYPE_IO) return -ENODEV; diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 2769da54f2b9..511649115bd7 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -870,15 +870,10 @@ static int __init css_bus_init(void) /* Try to enable MSS. */ ret = chsc_enable_facility(CHSC_SDA_OC_MSS); - switch (ret) { - case 0: /* Success. */ - max_ssid = __MAX_SSID; - break; - case -ENOMEM: - goto out; - default: + if (ret) max_ssid = 0; - } + else /* Success. */ + max_ssid = __MAX_SSID; ret = slow_subchannel_init(); if (ret) @@ -1048,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void) } subsys_initcall_sync(channel_subsystem_init_sync); +void channel_subsystem_reinit(void) +{ + chsc_enable_facility(CHSC_SDA_OC_MSS); +} + #ifdef CONFIG_PROC_FS static ssize_t cio_settle_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index c6abb75c4615..6d229f3523a0 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -764,7 +764,7 @@ static void sch_create_and_recog_new_device(struct subchannel *sch) static void io_subchannel_register(struct ccw_device *cdev) { struct subchannel *sch; - int ret; + int ret, adjust_init_count = 1; unsigned long flags; sch = to_subchannel(cdev->dev.parent); @@ -793,6 +793,7 @@ static void io_subchannel_register(struct ccw_device *cdev) cdev->private->dev_id.ssid, cdev->private->dev_id.devno); } + adjust_init_count = 0; goto out; } /* @@ -818,7 +819,7 @@ out: cdev->private->flags.recog_done = 1; wake_up(&cdev->private->wait_q); out_err: - if (atomic_dec_and_test(&ccw_device_init_count)) + if (adjust_init_count && atomic_dec_and_test(&ccw_device_init_count)) wake_up(&ccw_device_init_wq); } diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index c56ab94612f9..c9b852647f01 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -45,7 +45,7 @@ static void ccw_timeout_log(struct ccw_device *cdev) sch = to_subchannel(cdev->dev.parent); private = to_io_private(sch); orb = &private->orb; - cc = stsch(sch->schid, &schib); + cc = stsch_err(sch->schid, &schib); printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, " "device information:\n", get_clock()); diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index c94eb2a0fa2e..6ce83f56d537 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -33,7 +33,6 @@ void qdio_allocate_dbf(struct qdio_initialize *init_data, DBF_HEX(&init_data->input_handler, sizeof(void *)); DBF_HEX(&init_data->output_handler, sizeof(void *)); DBF_HEX(&init_data->int_parm, sizeof(long)); - DBF_HEX(&init_data->flags, sizeof(long)); DBF_HEX(&init_data->input_sbal_addr_array, sizeof(void *)); DBF_HEX(&init_data->output_sbal_addr_array, sizeof(void *)); DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr); diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 232ef047ba34..88be7b9ea6e1 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/timer.h> #include <linux/delay.h> +#include <linux/gfp.h> #include <asm/atomic.h> #include <asm/debug.h> #include <asm/qdio.h> @@ -588,10 +589,11 @@ static void qdio_kick_handler(struct qdio_q *q) if (q->is_input_q) { qperf_inc(q, inbound_handler); DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%02x c:%02x", start, count); - } else + } else { qperf_inc(q, outbound_handler); DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: s:%02x c:%02x", start, count); + } q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count, q->irq_ptr->int_parm); diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 9942c1031b25..ce5f8910ff83 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -7,6 +7,7 @@ * Jan Glauber <jang@linux.vnet.ibm.com> */ #include <linux/io.h> +#include <linux/slab.h> #include <asm/atomic.h> #include <asm/debug.h> #include <asm/qdio.h> |