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path: root/drivers/s390/cio/qdio_setup.c
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Diffstat (limited to 'drivers/s390/cio/qdio_setup.c')
-rw-r--r--drivers/s390/cio/qdio_setup.c85
1 files changed, 80 insertions, 5 deletions
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 89107d0..2acc01f 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -8,6 +8,7 @@
*/
#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/export.h>
#include <asm/qdio.h>
#include "cio.h"
@@ -19,6 +20,22 @@
#include "qdio_debug.h"
static struct kmem_cache *qdio_q_cache;
+static struct kmem_cache *qdio_aob_cache;
+
+struct qaob *qdio_allocate_aob()
+{
+ struct qaob *aob;
+
+ aob = kmem_cache_zalloc(qdio_aob_cache, GFP_ATOMIC);
+ return aob;
+}
+EXPORT_SYMBOL_GPL(qdio_allocate_aob);
+
+void qdio_release_aob(struct qaob *aob)
+{
+ kmem_cache_free(qdio_aob_cache, aob);
+}
+EXPORT_SYMBOL_GPL(qdio_release_aob);
/*
* qebsm is only available under 64bit but the adapter sets the feature
@@ -154,29 +171,36 @@ static void setup_queues(struct qdio_irq *irq_ptr,
struct qdio_q *q;
void **input_sbal_array = qdio_init->input_sbal_addr_array;
void **output_sbal_array = qdio_init->output_sbal_addr_array;
+ struct qdio_outbuf_state *output_sbal_state_array =
+ qdio_init->output_sbal_state_array;
int i;
for_each_input_queue(irq_ptr, q, i) {
- DBF_EVENT("in-q:%1d", i);
+ DBF_EVENT("inq:%1d", i);
setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);
q->is_input_q = 1;
- q->u.in.queue_start_poll = qdio_init->queue_start_poll;
+ q->u.in.queue_start_poll = qdio_init->queue_start_poll[i];
+
setup_storage_lists(q, irq_ptr, input_sbal_array, i);
input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
- if (is_thinint_irq(irq_ptr))
+ if (is_thinint_irq(irq_ptr)) {
tasklet_init(&q->tasklet, tiqdio_inbound_processing,
(unsigned long) q);
- else
+ } else {
tasklet_init(&q->tasklet, qdio_inbound_processing,
(unsigned long) q);
+ }
}
for_each_output_queue(irq_ptr, q, i) {
DBF_EVENT("outq:%1d", i);
setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i);
+ q->u.out.sbal_state = output_sbal_state_array;
+ output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q;
+
q->is_input_q = 0;
q->u.out.scan_threshold = qdio_init->scan_threshold;
setup_storage_lists(q, irq_ptr, output_sbal_array, i);
@@ -311,6 +335,19 @@ void qdio_release_memory(struct qdio_irq *irq_ptr)
for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
q = irq_ptr->output_qs[i];
if (q) {
+ if (q->u.out.use_cq) {
+ int n;
+
+ for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) {
+ struct qaob *aob = q->u.out.aobs[n];
+ if (aob) {
+ qdio_release_aob(aob);
+ q->u.out.aobs[n] = NULL;
+ }
+ }
+
+ qdio_disable_async_operation(&q->u.out);
+ }
free_page((unsigned long) q->slib);
kmem_cache_free(qdio_q_cache, q);
}
@@ -345,6 +382,7 @@ static void setup_qdr(struct qdio_irq *irq_ptr,
int i;
irq_ptr->qdr->qfmt = qdio_init->q_format;
+ irq_ptr->qdr->ac = qdio_init->qdr_ac;
irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs;
irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs;
irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */
@@ -465,23 +503,60 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
printk(KERN_INFO "%s", s);
}
+int qdio_enable_async_operation(struct qdio_output_q *outq)
+{
+ outq->aobs = kzalloc(sizeof(struct qaob *) * QDIO_MAX_BUFFERS_PER_Q,
+ GFP_ATOMIC);
+ if (!outq->aobs) {
+ outq->use_cq = 0;
+ return -ENOMEM;
+ }
+ outq->use_cq = 1;
+ return 0;
+}
+
+void qdio_disable_async_operation(struct qdio_output_q *q)
+{
+ kfree(q->aobs);
+ q->aobs = NULL;
+ q->use_cq = 0;
+}
+
int __init qdio_setup_init(void)
{
+ int rc;
+
qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
256, 0, NULL);
if (!qdio_q_cache)
return -ENOMEM;
+ qdio_aob_cache = kmem_cache_create("qdio_aob",
+ sizeof(struct qaob),
+ sizeof(struct qaob),
+ 0,
+ NULL);
+ if (!qdio_aob_cache) {
+ rc = -ENOMEM;
+ goto free_qdio_q_cache;
+ }
+
/* Check for OSA/FCP thin interrupts (bit 67). */
DBF_EVENT("thinint:%1d",
(css_general_characteristics.aif_osa) ? 1 : 0);
/* Check for QEBSM support in general (bit 58). */
DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0);
- return 0;
+ rc = 0;
+out:
+ return rc;
+free_qdio_q_cache:
+ kmem_cache_destroy(qdio_q_cache);
+ goto out;
}
void qdio_setup_exit(void)
{
+ kmem_cache_destroy(qdio_aob_cache);
kmem_cache_destroy(qdio_q_cache);
}