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path: root/drivers/dma/ioat/dma_v3.c
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Diffstat (limited to 'drivers/dma/ioat/dma_v3.c')
-rw-r--r--drivers/dma/ioat/dma_v3.c218
1 files changed, 145 insertions, 73 deletions
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index e5fc944de1f..e8336cce360 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -342,61 +342,22 @@ static void ioat3_restart_channel(struct ioat2_dma_chan *ioat)
__ioat2_restart_chan(ioat);
}
-static void ioat3_timer_event(unsigned long data)
+static void check_active(struct ioat2_dma_chan *ioat)
{
- struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
struct ioat_chan_common *chan = &ioat->base;
- if (test_bit(IOAT_COMPLETION_PENDING, &chan->state)) {
- dma_addr_t phys_complete;
- u64 status;
-
- status = ioat_chansts(chan);
-
- /* when halted due to errors check for channel
- * programming errors before advancing the completion state
- */
- if (is_ioat_halted(status)) {
- u32 chanerr;
-
- chanerr = readl(chan->reg_base + IOAT_CHANERR_OFFSET);
- dev_err(to_dev(chan), "%s: Channel halted (%x)\n",
- __func__, chanerr);
- if (test_bit(IOAT_RUN, &chan->state))
- BUG_ON(is_ioat_bug(chanerr));
- else /* we never got off the ground */
- return;
- }
-
- /* if we haven't made progress and we have already
- * acknowledged a pending completion once, then be more
- * forceful with a restart
- */
- spin_lock_bh(&chan->cleanup_lock);
- if (ioat_cleanup_preamble(chan, &phys_complete))
- __cleanup(ioat, phys_complete);
- else if (test_bit(IOAT_COMPLETION_ACK, &chan->state)) {
- spin_lock_bh(&ioat->prep_lock);
- ioat3_restart_channel(ioat);
- spin_unlock_bh(&ioat->prep_lock);
- } else {
- set_bit(IOAT_COMPLETION_ACK, &chan->state);
- mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
- }
- spin_unlock_bh(&chan->cleanup_lock);
- } else {
- u16 active;
+ if (ioat2_ring_active(ioat)) {
+ mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
+ return;
+ }
+ if (test_and_clear_bit(IOAT_CHAN_ACTIVE, &chan->state))
+ mod_timer(&chan->timer, jiffies + IDLE_TIMEOUT);
+ else if (ioat->alloc_order > ioat_get_alloc_order()) {
/* if the ring is idle, empty, and oversized try to step
* down the size
*/
- spin_lock_bh(&chan->cleanup_lock);
- spin_lock_bh(&ioat->prep_lock);
- active = ioat2_ring_active(ioat);
- if (active == 0 && ioat->alloc_order > ioat_get_alloc_order())
- reshape_ring(ioat, ioat->alloc_order-1);
- spin_unlock_bh(&ioat->prep_lock);
- spin_unlock_bh(&chan->cleanup_lock);
+ reshape_ring(ioat, ioat->alloc_order - 1);
/* keep shrinking until we get back to our minimum
* default size
@@ -404,6 +365,60 @@ static void ioat3_timer_event(unsigned long data)
if (ioat->alloc_order > ioat_get_alloc_order())
mod_timer(&chan->timer, jiffies + IDLE_TIMEOUT);
}
+
+}
+
+static void ioat3_timer_event(unsigned long data)
+{
+ struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
+ struct ioat_chan_common *chan = &ioat->base;
+ dma_addr_t phys_complete;
+ u64 status;
+
+ status = ioat_chansts(chan);
+
+ /* when halted due to errors check for channel
+ * programming errors before advancing the completion state
+ */
+ if (is_ioat_halted(status)) {
+ u32 chanerr;
+
+ chanerr = readl(chan->reg_base + IOAT_CHANERR_OFFSET);
+ dev_err(to_dev(chan), "%s: Channel halted (%x)\n",
+ __func__, chanerr);
+ if (test_bit(IOAT_RUN, &chan->state))
+ BUG_ON(is_ioat_bug(chanerr));
+ else /* we never got off the ground */
+ return;
+ }
+
+ /* if we haven't made progress and we have already
+ * acknowledged a pending completion once, then be more
+ * forceful with a restart
+ */
+ spin_lock_bh(&chan->cleanup_lock);
+ if (ioat_cleanup_preamble(chan, &phys_complete))
+ __cleanup(ioat, phys_complete);
+ else if (test_bit(IOAT_COMPLETION_ACK, &chan->state)) {
+ spin_lock_bh(&ioat->prep_lock);
+ ioat3_restart_channel(ioat);
+ spin_unlock_bh(&ioat->prep_lock);
+ spin_unlock_bh(&chan->cleanup_lock);
+ return;
+ } else {
+ set_bit(IOAT_COMPLETION_ACK, &chan->state);
+ mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
+ }
+
+
+ if (ioat2_ring_active(ioat))
+ mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
+ else {
+ spin_lock_bh(&ioat->prep_lock);
+ check_active(ioat);
+ spin_unlock_bh(&ioat->prep_lock);
+ }
+ spin_unlock_bh(&chan->cleanup_lock);
}
static enum dma_status
@@ -863,6 +878,7 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
unsigned long tmo;
struct device *dev = &device->pdev->dev;
struct dma_device *dma = &device->common;
+ u8 op = 0;
dev_dbg(dev, "%s\n", __func__);
@@ -908,18 +924,22 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
}
/* test xor */
+ op = IOAT_OP_XOR;
+
dest_dma = dma_map_page(dev, dest, 0, PAGE_SIZE, DMA_FROM_DEVICE);
for (i = 0; i < IOAT_NUM_SRC_TEST; i++)
dma_srcs[i] = dma_map_page(dev, xor_srcs[i], 0, PAGE_SIZE,
DMA_TO_DEVICE);
tx = dma->device_prep_dma_xor(dma_chan, dest_dma, dma_srcs,
IOAT_NUM_SRC_TEST, PAGE_SIZE,
- DMA_PREP_INTERRUPT);
+ DMA_PREP_INTERRUPT |
+ DMA_COMPL_SKIP_SRC_UNMAP |
+ DMA_COMPL_SKIP_DEST_UNMAP);
if (!tx) {
dev_err(dev, "Self-test xor prep failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
async_tx_ack(tx);
@@ -930,7 +950,7 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (cookie < 0) {
dev_err(dev, "Self-test xor setup failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
dma->device_issue_pending(dma_chan);
@@ -939,9 +959,13 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (dma->device_tx_status(dma_chan, cookie, NULL) != DMA_SUCCESS) {
dev_err(dev, "Self-test xor timed out\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
+ dma_unmap_page(dev, dest_dma, PAGE_SIZE, DMA_FROM_DEVICE);
+ for (i = 0; i < IOAT_NUM_SRC_TEST; i++)
+ dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, DMA_TO_DEVICE);
+
dma_sync_single_for_cpu(dev, dest_dma, PAGE_SIZE, DMA_FROM_DEVICE);
for (i = 0; i < (PAGE_SIZE / sizeof(u32)); i++) {
u32 *ptr = page_address(dest);
@@ -951,12 +975,14 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
goto free_resources;
}
}
- dma_sync_single_for_device(dev, dest_dma, PAGE_SIZE, DMA_TO_DEVICE);
+ dma_sync_single_for_device(dev, dest_dma, PAGE_SIZE, DMA_FROM_DEVICE);
/* skip validate if the capability is not present */
if (!dma_has_cap(DMA_XOR_VAL, dma_chan->device->cap_mask))
goto free_resources;
+ op = IOAT_OP_XOR_VAL;
+
/* validate the sources with the destintation page */
for (i = 0; i < IOAT_NUM_SRC_TEST; i++)
xor_val_srcs[i] = xor_srcs[i];
@@ -969,11 +995,13 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
DMA_TO_DEVICE);
tx = dma->device_prep_dma_xor_val(dma_chan, dma_srcs,
IOAT_NUM_SRC_TEST + 1, PAGE_SIZE,
- &xor_val_result, DMA_PREP_INTERRUPT);
+ &xor_val_result, DMA_PREP_INTERRUPT |
+ DMA_COMPL_SKIP_SRC_UNMAP |
+ DMA_COMPL_SKIP_DEST_UNMAP);
if (!tx) {
dev_err(dev, "Self-test zero prep failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
async_tx_ack(tx);
@@ -984,7 +1012,7 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (cookie < 0) {
dev_err(dev, "Self-test zero setup failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
dma->device_issue_pending(dma_chan);
@@ -993,9 +1021,12 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (dma->device_tx_status(dma_chan, cookie, NULL) != DMA_SUCCESS) {
dev_err(dev, "Self-test validate timed out\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
+ for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++)
+ dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, DMA_TO_DEVICE);
+
if (xor_val_result != 0) {
dev_err(dev, "Self-test validate failed compare\n");
err = -ENODEV;
@@ -1007,14 +1038,18 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
goto free_resources;
/* test memset */
+ op = IOAT_OP_FILL;
+
dma_addr = dma_map_page(dev, dest, 0,
PAGE_SIZE, DMA_FROM_DEVICE);
tx = dma->device_prep_dma_memset(dma_chan, dma_addr, 0, PAGE_SIZE,
- DMA_PREP_INTERRUPT);
+ DMA_PREP_INTERRUPT |
+ DMA_COMPL_SKIP_SRC_UNMAP |
+ DMA_COMPL_SKIP_DEST_UNMAP);
if (!tx) {
dev_err(dev, "Self-test memset prep failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
async_tx_ack(tx);
@@ -1025,7 +1060,7 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (cookie < 0) {
dev_err(dev, "Self-test memset setup failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
dma->device_issue_pending(dma_chan);
@@ -1034,9 +1069,11 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (dma->device_tx_status(dma_chan, cookie, NULL) != DMA_SUCCESS) {
dev_err(dev, "Self-test memset timed out\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
+ dma_unmap_page(dev, dma_addr, PAGE_SIZE, DMA_FROM_DEVICE);
+
for (i = 0; i < PAGE_SIZE/sizeof(u32); i++) {
u32 *ptr = page_address(dest);
if (ptr[i]) {
@@ -1047,17 +1084,21 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
}
/* test for non-zero parity sum */
+ op = IOAT_OP_XOR_VAL;
+
xor_val_result = 0;
for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++)
dma_srcs[i] = dma_map_page(dev, xor_val_srcs[i], 0, PAGE_SIZE,
DMA_TO_DEVICE);
tx = dma->device_prep_dma_xor_val(dma_chan, dma_srcs,
IOAT_NUM_SRC_TEST + 1, PAGE_SIZE,
- &xor_val_result, DMA_PREP_INTERRUPT);
+ &xor_val_result, DMA_PREP_INTERRUPT |
+ DMA_COMPL_SKIP_SRC_UNMAP |
+ DMA_COMPL_SKIP_DEST_UNMAP);
if (!tx) {
dev_err(dev, "Self-test 2nd zero prep failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
async_tx_ack(tx);
@@ -1068,7 +1109,7 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (cookie < 0) {
dev_err(dev, "Self-test 2nd zero setup failed\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
dma->device_issue_pending(dma_chan);
@@ -1077,15 +1118,31 @@ static int ioat_xor_val_self_test(struct ioatdma_device *device)
if (dma->device_tx_status(dma_chan, cookie, NULL) != DMA_SUCCESS) {
dev_err(dev, "Self-test 2nd validate timed out\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
if (xor_val_result != SUM_CHECK_P_RESULT) {
dev_err(dev, "Self-test validate failed compare\n");
err = -ENODEV;
- goto free_resources;
+ goto dma_unmap;
}
+ for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++)
+ dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, DMA_TO_DEVICE);
+
+ goto free_resources;
+dma_unmap:
+ if (op == IOAT_OP_XOR) {
+ dma_unmap_page(dev, dest_dma, PAGE_SIZE, DMA_FROM_DEVICE);
+ for (i = 0; i < IOAT_NUM_SRC_TEST; i++)
+ dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE,
+ DMA_TO_DEVICE);
+ } else if (op == IOAT_OP_XOR_VAL) {
+ for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++)
+ dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE,
+ DMA_TO_DEVICE);
+ } else if (op == IOAT_OP_FILL)
+ dma_unmap_page(dev, dma_addr, PAGE_SIZE, DMA_FROM_DEVICE);
free_resources:
dma->device_free_chan_resources(dma_chan);
out:
@@ -1126,12 +1183,7 @@ static int ioat3_reset_hw(struct ioat_chan_common *chan)
chanerr = readl(chan->reg_base + IOAT_CHANERR_OFFSET);
writel(chanerr, chan->reg_base + IOAT_CHANERR_OFFSET);
- /* -= IOAT ver.3 workarounds =- */
- /* Write CHANERRMSK_INT with 3E07h to mask out the errors
- * that can cause stability issues for IOAT ver.3, and clear any
- * pending errors
- */
- pci_write_config_dword(pdev, IOAT_PCI_CHANERRMASK_INT_OFFSET, 0x3e07);
+ /* clear any pending errors */
err = pci_read_config_dword(pdev, IOAT_PCI_CHANERR_INT_OFFSET, &chanerr);
if (err) {
dev_err(&pdev->dev, "channel error register unreachable\n");
@@ -1187,6 +1239,26 @@ static bool is_snb_ioat(struct pci_dev *pdev)
}
}
+static bool is_ivb_ioat(struct pci_dev *pdev)
+{
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB0:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB1:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB2:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB3:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB4:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB5:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB6:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB7:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB8:
+ case PCI_DEVICE_ID_INTEL_IOAT_IVB9:
+ return true;
+ default:
+ return false;
+ }
+
+}
+
int ioat3_dma_probe(struct ioatdma_device *device, int dca)
{
struct pci_dev *pdev = device->pdev;
@@ -1207,7 +1279,7 @@ int ioat3_dma_probe(struct ioatdma_device *device, int dca)
dma->device_alloc_chan_resources = ioat2_alloc_chan_resources;
dma->device_free_chan_resources = ioat2_free_chan_resources;
- if (is_jf_ioat(pdev) || is_snb_ioat(pdev))
+ if (is_jf_ioat(pdev) || is_snb_ioat(pdev) || is_ivb_ioat(pdev))
dma->copy_align = 6;
dma_cap_set(DMA_INTERRUPT, dma->cap_mask);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-27 06:10:12 +0000