aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390/cio
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/blacklist.c4
-rw-r--r--drivers/s390/cio/chsc.c30
-rw-r--r--drivers/s390/cio/cio.c2
-rw-r--r--drivers/s390/cio/cio_debug.h22
-rw-r--r--drivers/s390/cio/qdio.c36
5 files changed, 50 insertions, 44 deletions
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index cb8e2e672b6..0960bef7b19 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -414,11 +414,11 @@ cio_ignore_proc_init (void)
entry = create_proc_entry ("cio_ignore", S_IFREG | S_IRUGO | S_IWUSR,
&proc_root);
if (!entry)
- return 0;
+ return -ENOENT;
entry->proc_fops = &cio_ignore_proc_fops;
- return 1;
+ return 0;
}
__initcall (cio_ignore_proc_init);
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 6412b2c3edd..72187e54dca 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -242,28 +242,10 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
if (sch->vpm == mask)
goto out_unreg;
- if ((sch->schib.scsw.actl & (SCSW_ACTL_CLEAR_PEND |
- SCSW_ACTL_HALT_PEND |
- SCSW_ACTL_START_PEND |
- SCSW_ACTL_RESUME_PEND)) &&
- (sch->schib.pmcw.lpum == mask)) {
- int cc = cio_cancel(sch);
-
- if (cc == -ENODEV)
- goto out_unreg;
-
- if (cc == -EINVAL) {
- cc = cio_clear(sch);
- if (cc == -ENODEV)
- goto out_unreg;
- /* Call handler. */
- if (sch->driver && sch->driver->termination)
- sch->driver->termination(&sch->dev);
- goto out_unlock;
- }
- } else if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
- (sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
- (sch->schib.pmcw.lpum == mask)) {
+ if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
+ (sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
+ (sch->schib.pmcw.lpum == mask) &&
+ (sch->vpm == 0)) {
int cc;
cc = cio_clear(sch);
@@ -653,13 +635,13 @@ __chp_add(struct subchannel_id schid, void *data)
if (sch->schib.pmcw.chpid[i] == chp->id) {
if (stsch(sch->schid, &sch->schib) != 0) {
/* Endgame. */
- spin_unlock(&sch->lock);
+ spin_unlock_irq(&sch->lock);
return -ENXIO;
}
break;
}
if (i==8) {
- spin_unlock(&sch->lock);
+ spin_unlock_irq(&sch->lock);
return 0;
}
sch->lpm = ((sch->schib.pmcw.pim &
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index cbb86fa5f29..5b20d8c9c02 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -67,7 +67,7 @@ cio_debug_init (void)
goto out_unregister;
debug_register_view (cio_debug_msg_id, &debug_sprintf_view);
debug_set_level (cio_debug_msg_id, 2);
- cio_debug_trace_id = debug_register ("cio_trace", 16, 4, 8);
+ cio_debug_trace_id = debug_register ("cio_trace", 16, 4, 16);
if (!cio_debug_trace_id)
goto out_unregister;
debug_register_view (cio_debug_trace_id, &debug_hex_ascii_view);
diff --git a/drivers/s390/cio/cio_debug.h b/drivers/s390/cio/cio_debug.h
index 6af8b27d366..f88844adae1 100644
--- a/drivers/s390/cio/cio_debug.h
+++ b/drivers/s390/cio/cio_debug.h
@@ -3,6 +3,11 @@
#include <asm/debug.h>
+/* for use of debug feature */
+extern debug_info_t *cio_debug_msg_id;
+extern debug_info_t *cio_debug_trace_id;
+extern debug_info_t *cio_debug_crw_id;
+
#define CIO_TRACE_EVENT(imp, txt) do { \
debug_text_event(cio_debug_trace_id, imp, txt); \
} while (0)
@@ -15,18 +20,19 @@
debug_sprintf_event(cio_debug_crw_id, imp , ##args); \
} while (0)
-#define CIO_HEX_EVENT(imp, args...) do { \
- debug_event(cio_debug_trace_id, imp, ##args); \
- } while (0)
+static inline void
+CIO_HEX_EVENT(int level, void *data, int length)
+{
+ while (length > 0) {
+ debug_event(cio_debug_trace_id, level, data, length);
+ length -= cio_debug_trace_id->buf_size;
+ data += cio_debug_trace_id->buf_size;
+ }
+}
#define CIO_DEBUG(printk_level,event_level,msg...) ({ \
if (cio_show_msg) printk(printk_level msg); \
CIO_MSG_EVENT (event_level, msg); \
})
-/* for use of debug feature */
-extern debug_info_t *cio_debug_msg_id;
-extern debug_info_t *cio_debug_trace_id;
-extern debug_info_t *cio_debug_crw_id;
-
#endif
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 814f9258ce0..96f519281d9 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -38,6 +38,7 @@
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/timer.h>
+#include <linux/mempool.h>
#include <asm/ccwdev.h>
#include <asm/io.h>
@@ -80,6 +81,8 @@ static int indicator_used[INDICATORS_PER_CACHELINE];
static __u32 * volatile indicators;
static __u32 volatile spare_indicator;
static atomic_t spare_indicator_usecount;
+#define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
+static mempool_t *qdio_mempool_scssc;
static debug_info_t *qdio_dbf_setup;
static debug_info_t *qdio_dbf_sbal;
@@ -1637,7 +1640,7 @@ next:
}
kfree(irq_ptr->qdr);
- kfree(irq_ptr);
+ free_page((unsigned long) irq_ptr);
}
static void
@@ -2304,7 +2307,7 @@ qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
QDIO_DBF_TEXT0(0,setup,"getssqd");
qdioac = 0;
- ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ ssqd_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
if (!ssqd_area) {
QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
"SIGAs for sch x%x.\n", irq_ptr->schid.sch_no);
@@ -2364,7 +2367,7 @@ qdio_get_ssqd_information(struct qdio_irq *irq_ptr)
out:
qdio_check_subchannel_qebsm(irq_ptr, qdioac,
ssqd_area->sch_token);
- free_page ((unsigned long) ssqd_area);
+ mempool_free(ssqd_area, qdio_mempool_scssc);
irq_ptr->qdioac = qdioac;
}
@@ -2458,7 +2461,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
}
- scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ scssc_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
if (!scssc_area) {
QDIO_PRINT_WARN("No memory for setting indicators on " \
"subchannel 0.%x.%x.\n",
@@ -2514,7 +2517,7 @@ tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
result = 0;
out:
- free_page ((unsigned long) scssc_area);
+ mempool_free(scssc_area, qdio_mempool_scssc);
return result;
}
@@ -2543,7 +2546,7 @@ tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
if (!irq_ptr->is_thinint_irq)
return -ENODEV;
- scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ scsscf_area = mempool_alloc(qdio_mempool_scssc, GFP_ATOMIC);
if (!scsscf_area) {
QDIO_PRINT_WARN("No memory for setting delay target on " \
"subchannel 0.%x.%x.\n",
@@ -2581,7 +2584,7 @@ tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
result = 0; /* not critical */
out:
- free_page ((unsigned long) scsscf_area);
+ mempool_free(scsscf_area, qdio_mempool_scssc);
return result;
}
@@ -2980,7 +2983,7 @@ qdio_allocate(struct qdio_initialize *init_data)
qdio_allocate_do_dbf(init_data);
/* create irq */
- irq_ptr = kzalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA);
+ irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
@@ -2995,7 +2998,7 @@ qdio_allocate(struct qdio_initialize *init_data)
/* QDR must be in DMA area since CCW data address is only 32 bit */
irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
if (!(irq_ptr->qdr)) {
- kfree(irq_ptr);
+ free_page((unsigned long) irq_ptr);
QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
return -ENOMEM;
}
@@ -3780,6 +3783,16 @@ oom:
return -ENOMEM;
}
+static void *qdio_mempool_alloc(gfp_t gfp_mask, void *size)
+{
+ return (void *) get_zeroed_page(gfp_mask|GFP_DMA);
+}
+
+static void qdio_mempool_free(void *element, void *size)
+{
+ free_page((unsigned long) element);
+}
+
static int __init
init_QDIO(void)
{
@@ -3809,6 +3822,10 @@ init_QDIO(void)
qdio_add_procfs_entry();
+ qdio_mempool_scssc = mempool_create(QDIO_MEMPOOL_SCSSC_ELEMENTS,
+ qdio_mempool_alloc,
+ qdio_mempool_free, NULL);
+
if (tiqdio_check_chsc_availability())
QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
@@ -3824,6 +3841,7 @@ cleanup_QDIO(void)
qdio_remove_procfs_entry();
qdio_release_qdio_memory();
qdio_unregister_dbf_views();
+ mempool_destroy(qdio_mempool_scssc);
printk("qdio: %s: module removed\n",version);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-27 23:07:16 +0000