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authorDan Williams <dan.j.williams@intel.com>2009-09-08 17:55:21 -0700
committerDan Williams <dan.j.williams@intel.com>2009-09-08 17:55:21 -0700
commitbbb20089a3275a19e475dbc21320c3742e3ca423 (patch)
tree216fdc1cbef450ca688135c5b8969169482d9a48 /drivers/dma/ioat
parent3e48e656903e9fd8bc805c6a2c4264d7808d315b (diff)
parent657a77fa7284d8ae28dfa48f1dc5d919bf5b2843 (diff)
Merge branch 'dmaengine' into async-tx-next
Conflicts: crypto/async_tx/async_xor.c drivers/dma/ioat/dma_v2.h drivers/dma/ioat/pci.c drivers/md/raid5.c
Diffstat (limited to 'drivers/dma/ioat')
-rw-r--r--drivers/dma/ioat/dma.c7
-rw-r--r--drivers/dma/ioat/dma.h3
-rw-r--r--drivers/dma/ioat/dma_v2.c5
-rw-r--r--drivers/dma/ioat/dma_v2.h3
-rw-r--r--drivers/dma/ioat/pci.c16
5 files changed, 26 insertions, 8 deletions
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index 32a757be75c1..c524d36d3c2e 100644
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -251,12 +251,12 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx)
dev_dbg(to_dev(&ioat->base), "%s: cookie: %d\n", __func__, cookie);
/* write address into NextDescriptor field of last desc in chain */
- first = to_ioat_desc(tx->tx_list.next);
+ first = to_ioat_desc(desc->tx_list.next);
chain_tail = to_ioat_desc(ioat->used_desc.prev);
/* make descriptor updates globally visible before chaining */
wmb();
chain_tail->hw->next = first->txd.phys;
- list_splice_tail_init(&tx->tx_list, &ioat->used_desc);
+ list_splice_tail_init(&desc->tx_list, &ioat->used_desc);
dump_desc_dbg(ioat, chain_tail);
dump_desc_dbg(ioat, first);
@@ -298,6 +298,7 @@ ioat_dma_alloc_descriptor(struct ioat_dma_chan *ioat, gfp_t flags)
memset(desc, 0, sizeof(*desc));
+ INIT_LIST_HEAD(&desc_sw->tx_list);
dma_async_tx_descriptor_init(&desc_sw->txd, &ioat->base.common);
desc_sw->txd.tx_submit = ioat1_tx_submit;
desc_sw->hw = desc;
@@ -522,7 +523,7 @@ ioat1_dma_prep_memcpy(struct dma_chan *c, dma_addr_t dma_dest,
desc->txd.flags = flags;
desc->len = total_len;
- list_splice(&chain, &desc->txd.tx_list);
+ list_splice(&chain, &desc->tx_list);
hw->ctl_f.int_en = !!(flags & DMA_PREP_INTERRUPT);
hw->ctl_f.compl_write = 1;
hw->tx_cnt = tx_cnt;
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 0e37e426c729..6a675a2a2d1c 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -171,7 +171,7 @@ ioat_is_complete(struct dma_chan *c, dma_cookie_t cookie,
* struct ioat_desc_sw - wrapper around hardware descriptor
* @hw: hardware DMA descriptor (for memcpy)
* @node: this descriptor will either be on the free list,
- * or attached to a transaction list (async_tx.tx_list)
+ * or attached to a transaction list (tx_list)
* @txd: the generic software descriptor for all engines
* @id: identifier for debug
*/
@@ -179,6 +179,7 @@ struct ioat_desc_sw {
struct ioat_dma_descriptor *hw;
struct list_head node;
size_t len;
+ struct list_head tx_list;
struct dma_async_tx_descriptor txd;
#ifdef DEBUG
int id;
diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c
index 7bbbd83d12e6..5d6ac49e0d32 100644
--- a/drivers/dma/ioat/dma_v2.c
+++ b/drivers/dma/ioat/dma_v2.c
@@ -397,11 +397,12 @@ static struct ioat_ring_ent *ioat2_alloc_ring_ent(struct dma_chan *chan, gfp_t f
return NULL;
memset(hw, 0, sizeof(*hw));
- desc = kzalloc(sizeof(*desc), flags);
+ desc = kmem_cache_alloc(ioat2_cache, flags);
if (!desc) {
pci_pool_free(dma->dma_pool, hw, phys);
return NULL;
}
+ memset(desc, 0, sizeof(*desc));
dma_async_tx_descriptor_init(&desc->txd, chan);
desc->txd.tx_submit = ioat2_tx_submit_unlock;
@@ -416,7 +417,7 @@ static void ioat2_free_ring_ent(struct ioat_ring_ent *desc, struct dma_chan *cha
dma = to_ioatdma_device(chan->device);
pci_pool_free(dma->dma_pool, desc->hw, desc->txd.phys);
- kfree(desc);
+ kmem_cache_free(ioat2_cache, desc);
}
static struct ioat_ring_ent **ioat2_alloc_ring(struct dma_chan *c, int order, gfp_t flags)
diff --git a/drivers/dma/ioat/dma_v2.h b/drivers/dma/ioat/dma_v2.h
index 246e646b1904..1d849ef74d5f 100644
--- a/drivers/dma/ioat/dma_v2.h
+++ b/drivers/dma/ioat/dma_v2.h
@@ -142,8 +142,8 @@ struct ioat_ring_ent {
struct ioat_pq_update_descriptor *pqu;
struct ioat_raw_descriptor *raw;
};
- struct dma_async_tx_descriptor txd;
size_t len;
+ struct dma_async_tx_descriptor txd;
enum sum_check_flags *result;
#ifdef DEBUG
int id;
@@ -186,4 +186,5 @@ void __ioat2_issue_pending(struct ioat2_dma_chan *ioat);
void ioat2_cleanup_tasklet(unsigned long data);
void ioat2_timer_event(unsigned long data);
extern struct kobj_type ioat2_ktype;
+extern struct kmem_cache *ioat2_cache;
#endif /* IOATDMA_V2_H */
diff --git a/drivers/dma/ioat/pci.c b/drivers/dma/ioat/pci.c
index b77d3a2864ad..c788fa266470 100644
--- a/drivers/dma/ioat/pci.c
+++ b/drivers/dma/ioat/pci.c
@@ -83,6 +83,8 @@ static int ioat_dca_enabled = 1;
module_param(ioat_dca_enabled, int, 0644);
MODULE_PARM_DESC(ioat_dca_enabled, "control support of dca service (default: 1)");
+struct kmem_cache *ioat2_cache;
+
#define DRV_NAME "ioatdma"
static struct pci_driver ioat_pci_driver = {
@@ -182,15 +184,27 @@ static void __devexit ioat_remove(struct pci_dev *pdev)
static int __init ioat_init_module(void)
{
+ int err;
+
pr_info("%s: Intel(R) QuickData Technology Driver %s\n",
DRV_NAME, IOAT_DMA_VERSION);
- return pci_register_driver(&ioat_pci_driver);
+ ioat2_cache = kmem_cache_create("ioat2", sizeof(struct ioat_ring_ent),
+ 0, SLAB_HWCACHE_ALIGN, NULL);
+ if (!ioat2_cache)
+ return -ENOMEM;
+
+ err = pci_register_driver(&ioat_pci_driver);
+ if (err)
+ kmem_cache_destroy(ioat2_cache);
+
+ return err;
}
module_init(ioat_init_module);
static void __exit ioat_exit_module(void)
{
pci_unregister_driver(&ioat_pci_driver);
+ kmem_cache_destroy(ioat2_cache);
}
module_exit(ioat_exit_module);