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-rw-r--r--drivers/dma/Kconfig1
-rw-r--r--drivers/dma/dmaengine.c49
-rw-r--r--drivers/dma/ioat_dma.c39
-rw-r--r--drivers/dma/iop-adma.c124
4 files changed, 87 insertions, 126 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index c46b7c219ee9..a703deffb795 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -5,6 +5,7 @@
menuconfig DMADEVICES
bool "DMA Engine support"
depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
+ depends on !HIGHMEM64G
help
DMA engines can do asynchronous data transfers without
involving the host CPU. Currently, this framework can be
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index bcf52df30339..29965231b912 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -473,20 +473,22 @@ dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest,
{
struct dma_device *dev = chan->device;
struct dma_async_tx_descriptor *tx;
- dma_addr_t addr;
+ dma_addr_t dma_dest, dma_src;
dma_cookie_t cookie;
int cpu;
- tx = dev->device_prep_dma_memcpy(chan, len, 0);
- if (!tx)
+ dma_src = dma_map_single(dev->dev, src, len, DMA_TO_DEVICE);
+ dma_dest = dma_map_single(dev->dev, dest, len, DMA_FROM_DEVICE);
+ tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+
+ if (!tx) {
+ dma_unmap_single(dev->dev, dma_src, len, DMA_TO_DEVICE);
+ dma_unmap_single(dev->dev, dma_dest, len, DMA_FROM_DEVICE);
return -ENOMEM;
+ }
tx->ack = 1;
tx->callback = NULL;
- addr = dma_map_single(dev->dev, src, len, DMA_TO_DEVICE);
- tx->tx_set_src(addr, tx, 0);
- addr = dma_map_single(dev->dev, dest, len, DMA_FROM_DEVICE);
- tx->tx_set_dest(addr, tx, 0);
cookie = tx->tx_submit(tx);
cpu = get_cpu();
@@ -517,20 +519,22 @@ dma_async_memcpy_buf_to_pg(struct dma_chan *chan, struct page *page,
{
struct dma_device *dev = chan->device;
struct dma_async_tx_descriptor *tx;
- dma_addr_t addr;
+ dma_addr_t dma_dest, dma_src;
dma_cookie_t cookie;
int cpu;
- tx = dev->device_prep_dma_memcpy(chan, len, 0);
- if (!tx)
+ dma_src = dma_map_single(dev->dev, kdata, len, DMA_TO_DEVICE);
+ dma_dest = dma_map_page(dev->dev, page, offset, len, DMA_FROM_DEVICE);
+ tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+
+ if (!tx) {
+ dma_unmap_single(dev->dev, dma_src, len, DMA_TO_DEVICE);
+ dma_unmap_page(dev->dev, dma_dest, len, DMA_FROM_DEVICE);
return -ENOMEM;
+ }
tx->ack = 1;
tx->callback = NULL;
- addr = dma_map_single(dev->dev, kdata, len, DMA_TO_DEVICE);
- tx->tx_set_src(addr, tx, 0);
- addr = dma_map_page(dev->dev, page, offset, len, DMA_FROM_DEVICE);
- tx->tx_set_dest(addr, tx, 0);
cookie = tx->tx_submit(tx);
cpu = get_cpu();
@@ -563,20 +567,23 @@ dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg,
{
struct dma_device *dev = chan->device;
struct dma_async_tx_descriptor *tx;
- dma_addr_t addr;
+ dma_addr_t dma_dest, dma_src;
dma_cookie_t cookie;
int cpu;
- tx = dev->device_prep_dma_memcpy(chan, len, 0);
- if (!tx)
+ dma_src = dma_map_page(dev->dev, src_pg, src_off, len, DMA_TO_DEVICE);
+ dma_dest = dma_map_page(dev->dev, dest_pg, dest_off, len,
+ DMA_FROM_DEVICE);
+ tx = dev->device_prep_dma_memcpy(chan, dma_dest, dma_src, len, 0);
+
+ if (!tx) {
+ dma_unmap_page(dev->dev, dma_src, len, DMA_TO_DEVICE);
+ dma_unmap_page(dev->dev, dma_dest, len, DMA_FROM_DEVICE);
return -ENOMEM;
+ }
tx->ack = 1;
tx->callback = NULL;
- addr = dma_map_page(dev->dev, src_pg, src_off, len, DMA_TO_DEVICE);
- tx->tx_set_src(addr, tx, 0);
- addr = dma_map_page(dev->dev, dest_pg, dest_off, len, DMA_FROM_DEVICE);
- tx->tx_set_dest(addr, tx, 0);
cookie = tx->tx_submit(tx);
cpu = get_cpu();
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index 45e7b4666c7b..5bcfc55a2776 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -159,20 +159,6 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device)
return device->common.chancnt;
}
-static void ioat_set_src(dma_addr_t addr,
- struct dma_async_tx_descriptor *tx,
- int index)
-{
- tx_to_ioat_desc(tx)->src = addr;
-}
-
-static void ioat_set_dest(dma_addr_t addr,
- struct dma_async_tx_descriptor *tx,
- int index)
-{
- tx_to_ioat_desc(tx)->dst = addr;
-}
-
/**
* ioat_dma_memcpy_issue_pending - push potentially unrecognized appended
* descriptors to hw
@@ -415,8 +401,6 @@ static struct ioat_desc_sw *ioat_dma_alloc_descriptor(
memset(desc, 0, sizeof(*desc));
dma_async_tx_descriptor_init(&desc_sw->async_tx, &ioat_chan->common);
- desc_sw->async_tx.tx_set_src = ioat_set_src;
- desc_sw->async_tx.tx_set_dest = ioat_set_dest;
switch (ioat_chan->device->version) {
case IOAT_VER_1_2:
desc_sw->async_tx.tx_submit = ioat1_tx_submit;
@@ -714,6 +698,8 @@ static struct ioat_desc_sw *ioat_dma_get_next_descriptor(
static struct dma_async_tx_descriptor *ioat1_dma_prep_memcpy(
struct dma_chan *chan,
+ dma_addr_t dma_dest,
+ dma_addr_t dma_src,
size_t len,
int int_en)
{
@@ -726,6 +712,8 @@ static struct dma_async_tx_descriptor *ioat1_dma_prep_memcpy(
if (new) {
new->len = len;
+ new->dst = dma_dest;
+ new->src = dma_src;
return &new->async_tx;
} else
return NULL;
@@ -733,6 +721,8 @@ static struct dma_async_tx_descriptor *ioat1_dma_prep_memcpy(
static struct dma_async_tx_descriptor *ioat2_dma_prep_memcpy(
struct dma_chan *chan,
+ dma_addr_t dma_dest,
+ dma_addr_t dma_src,
size_t len,
int int_en)
{
@@ -749,6 +739,8 @@ static struct dma_async_tx_descriptor *ioat2_dma_prep_memcpy(
if (new) {
new->len = len;
+ new->dst = dma_dest;
+ new->src = dma_src;
return &new->async_tx;
} else
return NULL;
@@ -1045,7 +1037,7 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
u8 *dest;
struct dma_chan *dma_chan;
struct dma_async_tx_descriptor *tx;
- dma_addr_t addr;
+ dma_addr_t dma_dest, dma_src;
dma_cookie_t cookie;
int err = 0;
@@ -1073,7 +1065,12 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
goto out;
}
- tx = device->common.device_prep_dma_memcpy(dma_chan, IOAT_TEST_SIZE, 0);
+ dma_src = dma_map_single(dma_chan->device->dev, src, IOAT_TEST_SIZE,
+ DMA_TO_DEVICE);
+ dma_dest = dma_map_single(dma_chan->device->dev, dest, IOAT_TEST_SIZE,
+ DMA_FROM_DEVICE);
+ tx = device->common.device_prep_dma_memcpy(dma_chan, dma_dest, dma_src,
+ IOAT_TEST_SIZE, 0);
if (!tx) {
dev_err(&device->pdev->dev,
"Self-test prep failed, disabling\n");
@@ -1082,12 +1079,6 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
}
async_tx_ack(tx);
- addr = dma_map_single(dma_chan->device->dev, src, IOAT_TEST_SIZE,
- DMA_TO_DEVICE);
- tx->tx_set_src(addr, tx, 0);
- addr = dma_map_single(dma_chan->device->dev, dest, IOAT_TEST_SIZE,
- DMA_FROM_DEVICE);
- tx->tx_set_dest(addr, tx, 0);
tx->callback = ioat_dma_test_callback;
tx->callback_param = (void *)0x8086;
cookie = tx->tx_submit(tx);
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index b011b5ae22a2..eda841c60690 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -443,17 +443,6 @@ iop_adma_tx_submit(struct dma_async_tx_descriptor *tx)
return cookie;
}
-static void
-iop_adma_set_dest(dma_addr_t addr, struct dma_async_tx_descriptor *tx,
- int index)
-{
- struct iop_adma_desc_slot *sw_desc = tx_to_iop_adma_slot(tx);
- struct iop_adma_chan *iop_chan = to_iop_adma_chan(tx->chan);
-
- /* to do: support transfers lengths > IOP_ADMA_MAX_BYTE_COUNT */
- iop_desc_set_dest_addr(sw_desc->group_head, iop_chan, addr);
-}
-
static void iop_chan_start_null_memcpy(struct iop_adma_chan *iop_chan);
static void iop_chan_start_null_xor(struct iop_adma_chan *iop_chan);
@@ -486,7 +475,6 @@ static int iop_adma_alloc_chan_resources(struct dma_chan *chan)
dma_async_tx_descriptor_init(&slot->async_tx, chan);
slot->async_tx.tx_submit = iop_adma_tx_submit;
- slot->async_tx.tx_set_dest = iop_adma_set_dest;
INIT_LIST_HEAD(&slot->chain_node);
INIT_LIST_HEAD(&slot->slot_node);
INIT_LIST_HEAD(&slot->async_tx.tx_list);
@@ -547,18 +535,9 @@ iop_adma_prep_dma_interrupt(struct dma_chan *chan)
return sw_desc ? &sw_desc->async_tx : NULL;
}
-static void
-iop_adma_memcpy_set_src(dma_addr_t addr, struct dma_async_tx_descriptor *tx,
- int index)
-{
- struct iop_adma_desc_slot *sw_desc = tx_to_iop_adma_slot(tx);
- struct iop_adma_desc_slot *grp_start = sw_desc->group_head;
-
- iop_desc_set_memcpy_src_addr(grp_start, addr);
-}
-
static struct dma_async_tx_descriptor *
-iop_adma_prep_dma_memcpy(struct dma_chan *chan, size_t len, int int_en)
+iop_adma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dma_dest,
+ dma_addr_t dma_src, size_t len, int int_en)
{
struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
struct iop_adma_desc_slot *sw_desc, *grp_start;
@@ -578,9 +557,10 @@ iop_adma_prep_dma_memcpy(struct dma_chan *chan, size_t len, int int_en)
grp_start = sw_desc->group_head;
iop_desc_init_memcpy(grp_start, int_en);
iop_desc_set_byte_count(grp_start, iop_chan, len);
+ iop_desc_set_dest_addr(grp_start, iop_chan, dma_dest);
+ iop_desc_set_memcpy_src_addr(grp_start, dma_src);
sw_desc->unmap_src_cnt = 1;
sw_desc->unmap_len = len;
- sw_desc->async_tx.tx_set_src = iop_adma_memcpy_set_src;
}
spin_unlock_bh(&iop_chan->lock);
@@ -588,8 +568,8 @@ iop_adma_prep_dma_memcpy(struct dma_chan *chan, size_t len, int int_en)
}
static struct dma_async_tx_descriptor *
-iop_adma_prep_dma_memset(struct dma_chan *chan, int value, size_t len,
- int int_en)
+iop_adma_prep_dma_memset(struct dma_chan *chan, dma_addr_t dma_dest,
+ int value, size_t len, int int_en)
{
struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
struct iop_adma_desc_slot *sw_desc, *grp_start;
@@ -610,6 +590,7 @@ iop_adma_prep_dma_memset(struct dma_chan *chan, int value, size_t len,
iop_desc_init_memset(grp_start, int_en);
iop_desc_set_byte_count(grp_start, iop_chan, len);
iop_desc_set_block_fill_val(grp_start, value);
+ iop_desc_set_dest_addr(grp_start, iop_chan, dma_dest);
sw_desc->unmap_src_cnt = 1;
sw_desc->unmap_len = len;
}
@@ -618,19 +599,10 @@ iop_adma_prep_dma_memset(struct dma_chan *chan, int value, size_t len,
return sw_desc ? &sw_desc->async_tx : NULL;
}
-static void
-iop_adma_xor_set_src(dma_addr_t addr, struct dma_async_tx_descriptor *tx,
- int index)
-{
- struct iop_adma_desc_slot *sw_desc = tx_to_iop_adma_slot(tx);
- struct iop_adma_desc_slot *grp_start = sw_desc->group_head;
-
- iop_desc_set_xor_src_addr(grp_start, index, addr);
-}
-
static struct dma_async_tx_descriptor *
-iop_adma_prep_dma_xor(struct dma_chan *chan, unsigned int src_cnt, size_t len,
- int int_en)
+iop_adma_prep_dma_xor(struct dma_chan *chan, dma_addr_t dma_dest,
+ dma_addr_t *dma_src, unsigned int src_cnt, size_t len,
+ int int_en)
{
struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
struct iop_adma_desc_slot *sw_desc, *grp_start;
@@ -651,29 +623,22 @@ iop_adma_prep_dma_xor(struct dma_chan *chan, unsigned int src_cnt, size_t len,
grp_start = sw_desc->group_head;
iop_desc_init_xor(grp_start, src_cnt, int_en);
iop_desc_set_byte_count(grp_start, iop_chan, len);
+ iop_desc_set_dest_addr(grp_start, iop_chan, dma_dest);
sw_desc->unmap_src_cnt = src_cnt;
sw_desc->unmap_len = len;
- sw_desc->async_tx.tx_set_src = iop_adma_xor_set_src;
+ while (src_cnt--)
+ iop_desc_set_xor_src_addr(grp_start, src_cnt,
+ dma_src[src_cnt]);
}
spin_unlock_bh(&iop_chan->lock);
return sw_desc ? &sw_desc->async_tx : NULL;
}
-static void
-iop_adma_xor_zero_sum_set_src(dma_addr_t addr,
- struct dma_async_tx_descriptor *tx,
- int index)
-{
- struct iop_adma_desc_slot *sw_desc = tx_to_iop_adma_slot(tx);
- struct iop_adma_desc_slot *grp_start = sw_desc->group_head;
-
- iop_desc_set_zero_sum_src_addr(grp_start, index, addr);
-}
-
static struct dma_async_tx_descriptor *
-iop_adma_prep_dma_zero_sum(struct dma_chan *chan, unsigned int src_cnt,
- size_t len, u32 *result, int int_en)
+iop_adma_prep_dma_zero_sum(struct dma_chan *chan, dma_addr_t *dma_src,
+ unsigned int src_cnt, size_t len, u32 *result,
+ int int_en)
{
struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
struct iop_adma_desc_slot *sw_desc, *grp_start;
@@ -697,7 +662,9 @@ iop_adma_prep_dma_zero_sum(struct dma_chan *chan, unsigned int src_cnt,
__FUNCTION__, grp_start->xor_check_result);
sw_desc->unmap_src_cnt = src_cnt;
sw_desc->unmap_len = len;
- sw_desc->async_tx.tx_set_src = iop_adma_xor_zero_sum_set_src;
+ while (src_cnt--)
+ iop_desc_set_zero_sum_src_addr(grp_start, src_cnt,
+ dma_src[src_cnt]);
}
spin_unlock_bh(&iop_chan->lock);
@@ -882,13 +849,12 @@ static int __devinit iop_adma_memcpy_self_test(struct iop_adma_device *device)
goto out;
}
- tx = iop_adma_prep_dma_memcpy(dma_chan, IOP_ADMA_TEST_SIZE, 1);
dest_dma = dma_map_single(dma_chan->device->dev, dest,
IOP_ADMA_TEST_SIZE, DMA_FROM_DEVICE);
- iop_adma_set_dest(dest_dma, tx, 0);
src_dma = dma_map_single(dma_chan->device->dev, src,
IOP_ADMA_TEST_SIZE, DMA_TO_DEVICE);
- iop_adma_memcpy_set_src(src_dma, tx, 0);
+ tx = iop_adma_prep_dma_memcpy(dma_chan, dest_dma, src_dma,
+ IOP_ADMA_TEST_SIZE, 1);
cookie = iop_adma_tx_submit(tx);
iop_adma_issue_pending(dma_chan);
@@ -929,6 +895,7 @@ iop_adma_xor_zero_sum_self_test(struct iop_adma_device *device)
struct page *dest;
struct page *xor_srcs[IOP_ADMA_NUM_SRC_TEST];
struct page *zero_sum_srcs[IOP_ADMA_NUM_SRC_TEST + 1];
+ dma_addr_t dma_srcs[IOP_ADMA_NUM_SRC_TEST + 1];
dma_addr_t dma_addr, dest_dma;
struct dma_async_tx_descriptor *tx;
struct dma_chan *dma_chan;
@@ -981,17 +948,13 @@ iop_adma_xor_zero_sum_self_test(struct iop_adma_device *device)
}
/* test xor */
- tx = iop_adma_prep_dma_xor(dma_chan, IOP_ADMA_NUM_SRC_TEST,
- PAGE_SIZE, 1);
dest_dma = dma_map_page(dma_chan->device->dev, dest, 0,
PAGE_SIZE, DMA_FROM_DEVICE);
- iop_adma_set_dest(dest_dma, tx, 0);
-
- for (i = 0; i < IOP_ADMA_NUM_SRC_TEST; i++) {
- dma_addr = dma_map_page(dma_chan->device->dev, xor_srcs[i], 0,
- PAGE_SIZE, DMA_TO_DEVICE);
- iop_adma_xor_set_src(dma_addr, tx, i);
- }
+ for (i = 0; i < IOP_ADMA_NUM_SRC_TEST; i++)
+ dma_srcs[i] = dma_map_page(dma_chan->device->dev, xor_srcs[i],
+ 0, PAGE_SIZE, DMA_TO_DEVICE);
+ tx = iop_adma_prep_dma_xor(dma_chan, dest_dma, dma_srcs,
+ IOP_ADMA_NUM_SRC_TEST, PAGE_SIZE, 1);
cookie = iop_adma_tx_submit(tx);
iop_adma_issue_pending(dma_chan);
@@ -1032,13 +995,13 @@ iop_adma_xor_zero_sum_self_test(struct iop_adma_device *device)
zero_sum_result = 1;
- tx = iop_adma_prep_dma_zero_sum(dma_chan, IOP_ADMA_NUM_SRC_TEST + 1,
- PAGE_SIZE, &zero_sum_result, 1);
- for (i = 0; i < IOP_ADMA_NUM_SRC_TEST + 1; i++) {
- dma_addr = dma_map_page(dma_chan->device->dev, zero_sum_srcs[i],
- 0, PAGE_SIZE, DMA_TO_DEVICE);
- iop_adma_xor_zero_sum_set_src(dma_addr, tx, i);
- }
+ for (i = 0; i < IOP_ADMA_NUM_SRC_TEST + 1; i++)
+ dma_srcs[i] = dma_map_page(dma_chan->device->dev,
+ zero_sum_srcs[i], 0, PAGE_SIZE,
+ DMA_TO_DEVICE);
+ tx = iop_adma_prep_dma_zero_sum(dma_chan, dma_srcs,
+ IOP_ADMA_NUM_SRC_TEST + 1, PAGE_SIZE,
+ &zero_sum_result, 1);
cookie = iop_adma_tx_submit(tx);
iop_adma_issue_pending(dma_chan);
@@ -1060,10 +1023,9 @@ iop_adma_xor_zero_sum_self_test(struct iop_adma_device *device)
}
/* test memset */
- tx = iop_adma_prep_dma_memset(dma_chan, 0, PAGE_SIZE, 1);
dma_addr = dma_map_page(dma_chan->device->dev, dest, 0,
PAGE_SIZE, DMA_FROM_DEVICE);
- iop_adma_set_dest(dma_addr, tx, 0);
+ tx = iop_adma_prep_dma_memset(dma_chan, dma_addr, 0, PAGE_SIZE, 1);
cookie = iop_adma_tx_submit(tx);
iop_adma_issue_pending(dma_chan);
@@ -1089,13 +1051,13 @@ iop_adma_xor_zero_sum_self_test(struct iop_adma_device *device)
/* test for non-zero parity sum */
zero_sum_result = 0;
- tx = iop_adma_prep_dma_zero_sum(dma_chan, IOP_ADMA_NUM_SRC_TEST + 1,
- PAGE_SIZE, &zero_sum_result, 1);
- for (i = 0; i < IOP_ADMA_NUM_SRC_TEST + 1; i++) {
- dma_addr = dma_map_page(dma_chan->device->dev, zero_sum_srcs[i],
- 0, PAGE_SIZE, DMA_TO_DEVICE);
- iop_adma_xor_zero_sum_set_src(dma_addr, tx, i);
- }
+ for (i = 0; i < IOP_ADMA_NUM_SRC_TEST + 1; i++)
+ dma_srcs[i] = dma_map_page(dma_chan->device->dev,
+ zero_sum_srcs[i], 0, PAGE_SIZE,
+ DMA_TO_DEVICE);
+ tx = iop_adma_prep_dma_zero_sum(dma_chan, dma_srcs,
+ IOP_ADMA_NUM_SRC_TEST + 1, PAGE_SIZE,
+ &zero_sum_result, 1);
cookie = iop_adma_tx_submit(tx);
iop_adma_issue_pending(dma_chan);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-13 11:46:41 +0300