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-rw-r--r--drivers/s390/cio/cmf.c10
-rw-r--r--drivers/s390/cio/css.c1
-rw-r--r--drivers/s390/cio/device.c5
-rw-r--r--drivers/s390/cio/device_id.c48
-rw-r--r--drivers/s390/cio/qdio.c97
5 files changed, 60 insertions, 101 deletions
diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index 02fd00b55e1b..34a796913b06 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -594,6 +594,9 @@ alloc_cmb (struct ccw_device *cdev)
free_pages((unsigned long)mem, get_order(size));
} else if (!mem) {
/* no luck */
+ printk(KERN_WARNING "cio: failed to allocate area "
+ "for measuring %d subchannels\n",
+ cmb_area.num_channels);
ret = -ENOMEM;
goto out;
} else {
@@ -1279,13 +1282,6 @@ init_cmf(void)
case CMF_BASIC:
format_string = "basic";
cmbops = &cmbops_basic;
- if (cmb_area.num_channels > 4096 || cmb_area.num_channels < 1) {
- printk(KERN_ERR "cio: Basic channel measurement "
- "facility can only use 1 to 4096 devices\n"
- KERN_ERR "when the cmf driver is built"
- " as a loadable module\n");
- return 1;
- }
break;
case CMF_EXTENDED:
format_string = "extended";
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 1c27a5a06b49..5635e656c1a3 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -79,6 +79,7 @@ css_alloc_subchannel(struct subchannel_id schid)
sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
ret = cio_modify(sch);
if (ret) {
+ kfree(sch->lock);
kfree(sch);
return ERR_PTR(ret);
}
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 297659fa0e26..e44d92eac8e9 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -117,7 +117,10 @@ static int ccw_uevent(struct device *dev, char **envp, int num_envp,
snprint_alias(modalias_buf, sizeof(modalias_buf), id, "");
ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
"MODALIAS=%s", modalias_buf);
- return ret;
+ if (ret)
+ return ret;
+ envp[i] = NULL;
+ return 0;
}
struct bus_type ccw_bus_type;
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c
index 60b9347f7c92..f232832f2b22 100644
--- a/drivers/s390/cio/device_id.c
+++ b/drivers/s390/cio/device_id.c
@@ -17,6 +17,7 @@
#include <asm/delay.h>
#include <asm/cio.h>
#include <asm/lowcore.h>
+#include <asm/diag.h>
#include "cio.h"
#include "cio_debug.h"
@@ -25,51 +26,6 @@
#include "ioasm.h"
/*
- * diag210 is used under VM to get information about a virtual device
- */
-int
-diag210(struct diag210 * addr)
-{
- /*
- * diag 210 needs its data below the 2GB border, so we
- * use a static data area to be sure
- */
- static struct diag210 diag210_tmp;
- static DEFINE_SPINLOCK(diag210_lock);
- unsigned long flags;
- int ccode;
-
- spin_lock_irqsave(&diag210_lock, flags);
- diag210_tmp = *addr;
-
-#ifdef CONFIG_64BIT
- asm volatile(
- " lhi %0,-1\n"
- " sam31\n"
- " diag %1,0,0x210\n"
- "0: ipm %0\n"
- " srl %0,28\n"
- "1: sam64\n"
- EX_TABLE(0b,1b)
- : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory");
-#else
- asm volatile(
- " lhi %0,-1\n"
- " diag %1,0,0x210\n"
- "0: ipm %0\n"
- " srl %0,28\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory");
-#endif
-
- *addr = diag210_tmp;
- spin_unlock_irqrestore(&diag210_lock, flags);
-
- return ccode;
-}
-
-/*
* Input :
* devno - device number
* ps - pointer to sense ID data area
@@ -349,5 +305,3 @@ ccw_device_sense_id_irq(struct ccw_device *cdev, enum dev_event dev_event)
break;
}
}
-
-EXPORT_SYMBOL(diag210);
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index ed026a1dc324..d8d479876ec7 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -81,6 +81,7 @@ static __u32 volatile spare_indicator;
static atomic_t spare_indicator_usecount;
#define QDIO_MEMPOOL_SCSSC_ELEMENTS 2
static mempool_t *qdio_mempool_scssc;
+static struct kmem_cache *qdio_q_cache;
static debug_info_t *qdio_dbf_setup;
static debug_info_t *qdio_dbf_sbal;
@@ -194,6 +195,8 @@ qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
again:
ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt);
rc = qdio_check_ccq(q, ccq);
+ if ((ccq == 96) && (tmp_cnt != *cnt))
+ rc = 0;
if (rc == 1) {
QDIO_DBF_TEXT5(1,trace,"eqAGAIN");
goto again;
@@ -739,7 +742,8 @@ qdio_get_outbound_buffer_frontier(struct qdio_q *q)
first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
(QDIO_MAX_BUFFERS_PER_Q-1));
- if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
+ if (((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis)) ||
+ (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH))
SYNC_MEMORY;
check_next:
@@ -1617,23 +1621,21 @@ static void
qdio_release_irq_memory(struct qdio_irq *irq_ptr)
{
int i;
+ struct qdio_q *q;
- for (i=0;i<QDIO_MAX_QUEUES_PER_IRQ;i++) {
- if (!irq_ptr->input_qs[i])
- goto next;
-
- kfree(irq_ptr->input_qs[i]->slib);
- kfree(irq_ptr->input_qs[i]);
-
-next:
- if (!irq_ptr->output_qs[i])
- continue;
-
- kfree(irq_ptr->output_qs[i]->slib);
- kfree(irq_ptr->output_qs[i]);
-
+ for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
+ q = irq_ptr->input_qs[i];
+ if (q) {
+ free_page((unsigned long) q->slib);
+ kmem_cache_free(qdio_q_cache, q);
+ }
+ q = irq_ptr->output_qs[i];
+ if (q) {
+ free_page((unsigned long) q->slib);
+ kmem_cache_free(qdio_q_cache, q);
+ }
}
- kfree(irq_ptr->qdr);
+ free_page((unsigned long) irq_ptr->qdr);
free_page((unsigned long) irq_ptr);
}
@@ -1680,44 +1682,35 @@ qdio_alloc_qs(struct qdio_irq *irq_ptr,
{
int i;
struct qdio_q *q;
- int result=-ENOMEM;
-
- for (i=0;i<no_input_qs;i++) {
- q = kzalloc(sizeof(struct qdio_q), GFP_KERNEL);
- if (!q) {
- QDIO_PRINT_ERR("kmalloc of q failed!\n");
- goto out;
- }
+ for (i = 0; i < no_input_qs; i++) {
+ q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
+ if (!q)
+ return -ENOMEM;
+ memset(q, 0, sizeof(*q));
- q->slib = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
if (!q->slib) {
- QDIO_PRINT_ERR("kmalloc of slib failed!\n");
- goto out;
+ kmem_cache_free(qdio_q_cache, q);
+ return -ENOMEM;
}
-
irq_ptr->input_qs[i]=q;
}
- for (i=0;i<no_output_qs;i++) {
- q = kzalloc(sizeof(struct qdio_q), GFP_KERNEL);
-
- if (!q) {
- goto out;
- }
+ for (i = 0; i < no_output_qs; i++) {
+ q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
+ if (!q)
+ return -ENOMEM;
+ memset(q, 0, sizeof(*q));
- q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
+ q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
if (!q->slib) {
- QDIO_PRINT_ERR("kmalloc of slib failed!\n");
- goto out;
+ kmem_cache_free(qdio_q_cache, q);
+ return -ENOMEM;
}
-
irq_ptr->output_qs[i]=q;
}
-
- result=0;
-out:
- return result;
+ return 0;
}
static void
@@ -2985,17 +2978,17 @@ qdio_allocate(struct qdio_initialize *init_data)
QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
if (!irq_ptr) {
- QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
+ QDIO_PRINT_ERR("allocation of irq_ptr failed!\n");
return -ENOMEM;
}
init_MUTEX(&irq_ptr->setting_up_sema);
/* 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);
+ irq_ptr->qdr = (struct qdr *) __get_free_page(GFP_KERNEL | GFP_DMA);
if (!(irq_ptr->qdr)) {
free_page((unsigned long) irq_ptr);
- QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
+ QDIO_PRINT_ERR("allocation of irq_ptr->qdr failed!\n");
return -ENOMEM;
}
QDIO_DBF_TEXT0(0,setup,"qdr:");
@@ -3004,6 +2997,7 @@ qdio_allocate(struct qdio_initialize *init_data)
if (qdio_alloc_qs(irq_ptr,
init_data->no_input_qs,
init_data->no_output_qs)) {
+ QDIO_PRINT_ERR("queue allocation failed!\n");
qdio_release_irq_memory(irq_ptr);
return -ENOMEM;
}
@@ -3895,9 +3889,19 @@ init_QDIO(void)
if (res)
return res;
+ qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
+ 256, 0, NULL);
+ if (!qdio_q_cache) {
+ qdio_release_qdio_memory();
+ return -ENOMEM;
+ }
+
res = qdio_register_dbf_views();
- if (res)
+ if (res) {
+ kmem_cache_destroy(qdio_q_cache);
+ qdio_release_qdio_memory();
return res;
+ }
QDIO_DBF_TEXT0(0,setup,"initQDIO");
res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
@@ -3929,6 +3933,7 @@ cleanup_QDIO(void)
qdio_release_qdio_memory();
qdio_unregister_dbf_views();
mempool_destroy(qdio_mempool_scssc);
+ kmem_cache_destroy(qdio_q_cache);
bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
printk("qdio: %s: module removed\n",version);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-14 13:34:14 +0000