diff options
Diffstat (limited to 'drivers/dma/ioat')
| -rw-r--r-- | drivers/dma/ioat/dma.c | 304 | ||||
| -rw-r--r-- | drivers/dma/ioat/dma.h | 7 |
2 files changed, 144 insertions, 167 deletions
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index 65f8b7492a4d..462dae627191 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -55,9 +55,8 @@ ioat1_dma_get_next_descriptor(struct ioat_dma_chan *ioat_chan); static struct ioat_desc_sw * ioat2_dma_get_next_descriptor(struct ioat_dma_chan *ioat_chan); -static inline struct ioat_dma_chan *ioat_lookup_chan_by_index( - struct ioatdma_device *device, - int index) +static inline struct ioat_dma_chan * +ioat_chan_by_index(struct ioatdma_device *device, int index) { return device->idx[index]; } @@ -87,7 +86,7 @@ static irqreturn_t ioat_dma_do_interrupt(int irq, void *data) attnstatus = readl(instance->reg_base + IOAT_ATTNSTATUS_OFFSET); for_each_bit(bit, &attnstatus, BITS_PER_LONG) { - ioat_chan = ioat_lookup_chan_by_index(instance, bit); + ioat_chan = ioat_chan_by_index(instance, bit); tasklet_schedule(&ioat_chan->cleanup_task); } @@ -205,8 +204,8 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device) * descriptors to hw * @chan: DMA channel handle */ -static inline void __ioat1_dma_memcpy_issue_pending( - struct ioat_dma_chan *ioat_chan) +static inline void +__ioat1_dma_memcpy_issue_pending(struct ioat_dma_chan *ioat_chan) { ioat_chan->pending = 0; writeb(IOAT_CHANCMD_APPEND, ioat_chan->reg_base + IOAT1_CHANCMD_OFFSET); @@ -223,8 +222,8 @@ static void ioat1_dma_memcpy_issue_pending(struct dma_chan *chan) } } -static inline void __ioat2_dma_memcpy_issue_pending( - struct ioat_dma_chan *ioat_chan) +static inline void +__ioat2_dma_memcpy_issue_pending(struct ioat_dma_chan *ioat_chan) { ioat_chan->pending = 0; writew(ioat_chan->dmacount, @@ -279,18 +278,18 @@ static void ioat_dma_chan_reset_part2(struct work_struct *work) desc = to_ioat_desc(ioat_chan->used_desc.prev); switch (ioat_chan->device->version) { case IOAT_VER_1_2: - writel(((u64) desc->async_tx.phys) & 0x00000000FFFFFFFF, + writel(((u64) desc->txd.phys) & 0x00000000FFFFFFFF, ioat_chan->reg_base + IOAT1_CHAINADDR_OFFSET_LOW); - writel(((u64) desc->async_tx.phys) >> 32, + writel(((u64) desc->txd.phys) >> 32, ioat_chan->reg_base + IOAT1_CHAINADDR_OFFSET_HIGH); writeb(IOAT_CHANCMD_START, ioat_chan->reg_base + IOAT_CHANCMD_OFFSET(ioat_chan->device->version)); break; case IOAT_VER_2_0: - writel(((u64) desc->async_tx.phys) & 0x00000000FFFFFFFF, + writel(((u64) desc->txd.phys) & 0x00000000FFFFFFFF, ioat_chan->reg_base + IOAT2_CHAINADDR_OFFSET_LOW); - writel(((u64) desc->async_tx.phys) >> 32, + writel(((u64) desc->txd.phys) >> 32, ioat_chan->reg_base + IOAT2_CHAINADDR_OFFSET_HIGH); /* tell the engine to go with what's left to be done */ @@ -299,7 +298,7 @@ static void ioat_dma_chan_reset_part2(struct work_struct *work) break; } - dev_err(&ioat_chan->device->pdev->dev, + dev_err(to_dev(ioat_chan), "chan%d reset - %d descs waiting, %d total desc\n", chan_num(ioat_chan), ioat_chan->dmacount, ioat_chan->desccount); @@ -322,7 +321,7 @@ static void ioat_dma_reset_channel(struct ioat_dma_chan *ioat_chan) chansts = (ioat_chan->completion_virt->low & IOAT_CHANSTS_DMA_TRANSFER_STATUS); if (chanerr) { - dev_err(&ioat_chan->device->pdev->dev, + dev_err(to_dev(ioat_chan), "chan%d, CHANSTS = 0x%08x CHANERR = 0x%04x, clearing\n", chan_num(ioat_chan), chansts, chanerr); writel(chanerr, ioat_chan->reg_base + IOAT_CHANERR_OFFSET); @@ -367,7 +366,7 @@ static void ioat_dma_chan_watchdog(struct work_struct *work) unsigned long compl_desc_addr_hw; for (i = 0; i < device->common.chancnt; i++) { - ioat_chan = ioat_lookup_chan_by_index(device, i); + ioat_chan = ioat_chan_by_index(device, i); if (ioat_chan->device->version == IOAT_VER_1_2 /* have we started processing anything yet */ @@ -475,7 +474,7 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx) len = first->len; src = first->src; dst = first->dst; - orig_flags = first->async_tx.flags; + orig_flags = first->txd.flags; new = first; spin_lock_bh(&ioat_chan->desc_lock); @@ -484,7 +483,7 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx) do { copy = min_t(size_t, len, ioat_chan->xfercap); - async_tx_ack(&new->async_tx); + async_tx_ack(&new->txd); hw = new->hw; hw->size = copy; @@ -495,7 +494,7 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx) /* chain together the physical address list for the HW */ wmb(); - prev->hw->next = (u64) new->async_tx.phys; + prev->hw->next = (u64) new->txd.phys; len -= copy; dst += copy; @@ -507,27 +506,26 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx) } while (len && (new = ioat1_dma_get_next_descriptor(ioat_chan))); if (!new) { - dev_err(&ioat_chan->device->pdev->dev, - "tx submit failed\n"); + dev_err(to_dev(ioat_chan), "tx submit failed\n"); spin_unlock_bh(&ioat_chan->desc_lock); return -ENOMEM; } hw->ctl = IOAT_DMA_DESCRIPTOR_CTL_CP_STS; - if (first->async_tx.callback) { + if (first->txd.callback) { hw->ctl |= IOAT_DMA_DESCRIPTOR_CTL_INT_GN; if (first != new) { /* move callback into to last desc */ - new->async_tx.callback = first->async_tx.callback; - new->async_tx.callback_param - = first->async_tx.callback_param; - first->async_tx.callback = NULL; - first->async_tx.callback_param = NULL; + new->txd.callback = first->txd.callback; + new->txd.callback_param + = first->txd.callback_param; + first->txd.callback = NULL; + first->txd.callback_param = NULL; } } new->tx_cnt = desc_count; - new->async_tx.flags = orig_flags; /* client is in control of this ack */ + new->txd.flags = orig_flags; /* client is in control of this ack */ /* store the original values for use in later cleanup */ if (new != first) { @@ -541,11 +539,11 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx) cookie++; if (cookie < 0) cookie = 1; - ioat_chan->common.cookie = new->async_tx.cookie = cookie; + ioat_chan->common.cookie = new->txd.cookie = cookie; /* write address into NextDescriptor field of last desc in chain */ to_ioat_desc(ioat_chan->used_desc.prev)->hw->next = - first->async_tx.phys; + first->txd.phys; list_splice_tail(&new_chain, &ioat_chan->used_desc); ioat_chan->dmacount += desc_count; @@ -574,7 +572,7 @@ static dma_cookie_t ioat2_tx_submit(struct dma_async_tx_descriptor *tx) len = first->len; src = first->src; dst = first->dst; - orig_flags = first->async_tx.flags; + orig_flags = first->txd.flags; new = first; /* @@ -584,7 +582,7 @@ static dma_cookie_t ioat2_tx_submit(struct dma_async_tx_descriptor *tx) do { copy = min_t(size_t, len, ioat_chan->xfercap); - async_tx_ack(&new->async_tx); + async_tx_ack(&new->txd); hw = new->hw; hw->size = copy; @@ -599,27 +597,26 @@ static dma_cookie_t ioat2_tx_submit(struct dma_async_tx_descriptor *tx) } while (len && (new = ioat2_dma_get_next_descriptor(ioat_chan))); if (!new) { - dev_err(&ioat_chan->device->pdev->dev, - "tx submit failed\n"); + dev_err(to_dev(ioat_chan), "tx submit failed\n"); spin_unlock_bh(&ioat_chan->desc_lock); return -ENOMEM; } hw->ctl |= IOAT_DMA_DESCRIPTOR_CTL_CP_STS; - if (first->async_tx.callback) { + if (first->txd.callback) { hw->ctl |= IOAT_DMA_DESCRIPTOR_CTL_INT_GN; if (first != new) { /* move callback into to last desc */ - new->async_tx.callback = first->async_tx.callback; - new->async_tx.callback_param - = first->async_tx.callback_param; - first->async_tx.callback = NULL; - first->async_tx.callback_param = NULL; + new->txd.callback = first->txd.callback; + new->txd.callback_param + = first->txd.callback_param; + first->txd.callback = NULL; + first->txd.callback_param = NULL; } } new->tx_cnt = desc_count; - new->async_tx.flags = orig_flags; /* client is in control of this ack */ + new->txd.flags = orig_flags; /* client is in control of this ack */ /* store the original values for use in later cleanup */ if (new != first) { @@ -633,7 +630,7 @@ static dma_cookie_t ioat2_tx_submit(struct dma_async_tx_descriptor *tx) cookie++; if (cookie < 0) cookie = 1; - ioat_chan->common.cookie = new->async_tx.cookie = cookie; + ioat_chan->common.cookie = new->txd.cookie = cookie; ioat_chan->dmacount += desc_count; ioat_chan->pending += desc_count; @@ -649,9 +646,8 @@ static dma_cookie_t ioat2_tx_submit(struct dma_async_tx_descriptor *tx) * @ioat_chan: the channel supplying the memory pool for the descriptors * @flags: allocation flags */ -static struct ioat_desc_sw *ioat_dma_alloc_descriptor( - struct ioat_dma_chan *ioat_chan, - gfp_t flags) +static struct ioat_desc_sw * +ioat_dma_alloc_descriptor(struct ioat_dma_chan *ioat_chan, gfp_t flags) { struct ioat_dma_descriptor *desc; struct ioat_desc_sw *desc_sw; @@ -670,19 +666,19 @@ 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); + dma_async_tx_descriptor_init(&desc_sw->txd, &ioat_chan->common); switch (ioat_chan->device->version) { case IOAT_VER_1_2: - desc_sw->async_tx.tx_submit = ioat1_tx_submit; + desc_sw->txd.tx_submit = ioat1_tx_submit; break; case IOAT_VER_2_0: case IOAT_VER_3_0: - desc_sw->async_tx.tx_submit = ioat2_tx_submit; + desc_sw->txd.tx_submit = ioat2_tx_submit; break; } desc_sw->hw = desc; - desc_sw->async_tx.phys = phys; + desc_sw->txd.phys = phys; return desc_sw; } @@ -712,9 +708,9 @@ static void ioat2_dma_massage_chan_desc(struct ioat_dma_chan *ioat_chan) /* circle link the hw descriptors */ desc = to_ioat_desc(ioat_chan->free_desc.next); - desc->hw->next = to_ioat_desc(desc->node.next)->async_tx.phys; + desc->hw->next = to_ioat_desc(desc->node.next)->txd.phys; list_for_each_entry_safe(desc, _desc, ioat_chan->free_desc.next, node) { - desc->hw->next = to_ioat_desc(desc->node.next)->async_tx.phys; + desc->hw->next = to_ioat_desc(desc->node.next)->txd.phys; } } @@ -743,8 +739,7 @@ static int ioat_dma_alloc_chan_resources(struct dma_chan *chan) chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET); if (chanerr) { - dev_err(&ioat_chan->device->pdev->dev, - "CHANERR = %x, clearing\n", chanerr); + dev_err(to_dev(ioat_chan), "CHANERR = %x, clearing\n", chanerr); writel(chanerr, ioat_chan->reg_base + IOAT_CHANERR_OFFSET); } @@ -752,7 +747,7 @@ static int ioat_dma_alloc_chan_resources(struct dma_chan *chan) for (i = 0; i < ioat_initial_desc_count; i++) { desc = ioat_dma_alloc_descriptor(ioat_chan, GFP_KERNEL); if (!desc) { - dev_err(&ioat_chan->device->pdev->dev, + dev_err(to_dev(ioat_chan), "Only %d initial descriptors\n", i); break; } @@ -819,14 +814,14 @@ static void ioat_dma_free_chan_resources(struct dma_chan *chan) in_use_descs++; list_del(&desc->node); pci_pool_free(ioatdma_device->dma_pool, desc->hw, - desc->async_tx.phys); + desc->txd.phys); kfree(desc); } list_for_each_entry_safe(desc, _desc, &ioat_chan->free_desc, node) { list_del(&desc->node); pci_pool_free(ioatdma_device->dma_pool, desc->hw, - desc->async_tx.phys); + desc->txd.phys); kfree(desc); } break; @@ -836,12 +831,12 @@ static void ioat_dma_free_chan_resources(struct dma_chan *chan) ioat_chan->free_desc.next, node) { list_del(&desc->node); pci_pool_free(ioatdma_device->dma_pool, desc->hw, - desc->async_tx.phys); + desc->txd.phys); kfree(desc); } desc = to_ioat_desc(ioat_chan->free_desc.next); pci_pool_free(ioatdma_device->dma_pool, desc->hw, - desc->async_tx.phys); + desc->txd.phys); kfree(desc); INIT_LIST_HEAD(&ioat_chan->free_desc); INIT_LIST_HEAD(&ioat_chan->used_desc); @@ -855,8 +850,7 @@ static void ioat_dma_free_chan_resources(struct dma_chan *chan) /* one is ok since we left it on there on purpose */ if (in_use_descs > 1) - dev_err(&ioat_chan->device->pdev->dev, - "Freeing %d in use descriptors!\n", + dev_err(to_dev(ioat_chan), "Freeing %d in use descriptors!\n", in_use_descs - 1); ioat_chan->last_completion = ioat_chan->completion_addr = 0; @@ -889,8 +883,7 @@ ioat1_dma_get_next_descriptor(struct ioat_dma_chan *ioat_chan) /* try to get another desc */ new = ioat_dma_alloc_descriptor(ioat_chan, GFP_ATOMIC); if (!new) { - dev_err(&ioat_chan->device->pdev->dev, - "alloc failed\n"); + dev_err(to_dev(ioat_chan), "alloc failed\n"); return NULL; } } @@ -936,16 +929,15 @@ ioat2_dma_get_next_descriptor(struct ioat_dma_chan *ioat_chan) for (i = 16; i; i--) { desc = ioat_dma_alloc_descriptor(ioat_chan, GFP_ATOMIC); if (!desc) { - dev_err(&ioat_chan->device->pdev->dev, - "alloc failed\n"); + dev_err(to_dev(ioat_chan), "alloc failed\n"); break; } list_add_tail(&desc->node, ioat_chan->used_desc.next); desc->hw->next - = to_ioat_desc(desc->node.next)->async_tx.phys; + = to_ioat_desc(desc->node.next)->txd.phys; to_ioat_desc(desc->node.prev)->hw->next - = desc->async_tx.phys; + = desc->txd.phys; ioat_chan->desccount++; } @@ -962,8 +954,8 @@ ioat2_dma_get_next_descriptor(struct ioat_dma_chan *ioat_chan) return new; } -static struct ioat_desc_sw *ioat_dma_get_next_descriptor( - struct ioat_dma_chan *ioat_chan) +static struct ioat_desc_sw * +ioat_dma_get_next_descriptor(struct ioat_dma_chan *ioat_chan) { if (!ioat_chan) return NULL; @@ -978,12 +970,9 @@ static struct ioat_desc_sw *ioat_dma_get_next_descriptor( return NULL; } -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, - unsigned long flags) +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, unsigned long flags) { struct ioat_dma_chan *ioat_chan = to_ioat_chan(chan); struct ioat_desc_sw *new; @@ -996,22 +985,19 @@ static struct dma_async_tx_descriptor *ioat1_dma_prep_memcpy( new->len = len; new->dst = dma_dest; new->src = dma_src; - new->async_tx.flags = flags; - return &new->async_tx; + new->txd.flags = flags; + return &new->txd; } else { - dev_err(&ioat_chan->device->pdev->dev, + dev_err(to_dev(ioat_chan), "chan%d - get_next_desc failed: %d descs waiting, %d total desc\n", chan_num(ioat_chan), ioat_chan->dmacount, ioat_chan->desccount); return NULL; } } -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, - unsigned long flags) +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, unsigned long flags) { struct ioat_dma_chan *ioat_chan = to_ioat_chan(chan); struct ioat_desc_sw *new; @@ -1028,11 +1014,11 @@ static struct dma_async_tx_descriptor *ioat2_dma_prep_memcpy( new->len = len; new->dst = dma_dest; new->src = dma_src; - new->async_tx.flags = flags; - return &new->async_tx; + new->txd.flags = flags; + return &new->txd; } else { spin_unlock_bh(&ioat_chan->desc_lock); - dev_err(&ioat_chan->device->pdev->dev, + dev_err(to_dev(ioat_chan), "chan%d - get_next_desc failed: %d descs waiting, %d total desc\n", chan_num(ioat_chan), ioat_chan->dmacount, ioat_chan->desccount); return NULL; @@ -1050,8 +1036,8 @@ static void ioat_dma_cleanup_tasklet(unsigned long data) static void ioat_dma_unmap(struct ioat_dma_chan *ioat_chan, struct ioat_desc_sw *desc) { - if (!(desc->async_tx.flags & DMA_COMPL_SKIP_DEST_UNMAP)) { - if (desc->async_tx.flags & DMA_COMPL_DEST_UNMAP_SINGLE) + if (!(desc->txd.flags & DMA_COMPL_SKIP_DEST_UNMAP)) { + if (desc->txd.flags & DMA_COMPL_DEST_UNMAP_SINGLE) pci_unmap_single(ioat_chan->device->pdev, pci_unmap_addr(desc, dst), pci_unmap_len(desc, len), @@ -1063,8 +1049,8 @@ ioat_dma_unmap(struct ioat_dma_chan *ioat_chan, struct ioat_desc_sw *desc) PCI_DMA_FROMDEVICE); } - if (!(desc->async_tx.flags & DMA_COMPL_SKIP_SRC_UNMAP)) { - if (desc->async_tx.flags & DMA_COMPL_SRC_UNMAP_SINGLE) + if (!(desc->txd.flags & DMA_COMPL_SKIP_SRC_UNMAP)) { + if (desc->txd.flags & DMA_COMPL_SRC_UNMAP_SINGLE) pci_unmap_single(ioat_chan->device->pdev, pci_unmap_addr(desc, src), pci_unmap_len(desc, len), @@ -1088,6 +1074,7 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan) dma_cookie_t cookie = 0; unsigned long desc_phys; struct ioat_desc_sw *latest_desc; + struct dma_async_tx_descriptor *tx; prefetch(ioat_chan->completion_virt); @@ -1111,8 +1098,7 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan) if ((ioat_chan->completion_virt->full & IOAT_CHANSTS_DMA_TRANSFER_STATUS) == IOAT_CHANSTS_DMA_TRANSFER_STATUS_HALTED) { - dev_err(&ioat_chan->device->pdev->dev, - "Channel halted, chanerr = %x\n", + dev_err(to_dev(ioat_chan), "Channel halted, chanerr = %x\n", readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET)); /* TODO do something to salvage the situation */ @@ -1145,38 +1131,38 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan) case IOAT_VER_1_2: list_for_each_entry_safe(desc, _desc, &ioat_chan->used_desc, node) { - + tx = &desc->txd; /* * Incoming DMA requests may use multiple descriptors, * due to exceeding xfercap, perhaps. If so, only the * last one will have a cookie, and require unmapping. */ - if (desc->async_tx.cookie) { - cookie = desc->async_tx.cookie; + if (tx->cookie) { + cookie = tx->cookie; ioat_dma_unmap(ioat_chan, desc); - if (desc->async_tx.callback) { - desc->async_tx.callback(desc->async_tx.callback_param); - desc->async_tx.callback = NULL; + if (tx->callback) { + tx->callback(tx->callback_param); + tx->callback = NULL; } } - if (desc->async_tx.phys != phys_complete) { + if (tx->phys != phys_complete) { /* * a completed entry, but not the last, so clean * up if the client is done with the descriptor */ - if (async_tx_test_ack(&desc->async_tx)) { + if (async_tx_test_ack(tx)) { list_move_tail(&desc->node, &ioat_chan->free_desc); } else - desc->async_tx.cookie = 0; + tx->cookie = 0; } else { /* * last used desc. Do not remove, so we can * append from it, but don't look at it next * time, either */ - desc->async_tx.cookie = 0; + tx->cookie = 0; /* TODO check status bits? */ break; @@ -1191,10 +1177,11 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan) /* work backwards to find latest finished desc */ desc = to_ioat_desc(ioat_chan->used_desc.next); + tx = &desc->txd; latest_desc = NULL; do { desc = to_ioat_desc(desc->node.prev); - desc_phys = (unsigned long)desc->async_tx.phys + desc_phys = (unsigned long)tx->phys & IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR; if (desc_phys == phys_complete) { latest_desc = desc; @@ -1203,19 +1190,18 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan) } while (&desc->node != ioat_chan->used_desc.prev); if (latest_desc != NULL) { - /* work forwards to clear finished descriptors */ for (desc = to_ioat_desc(ioat_chan->used_desc.prev); &desc->node != latest_desc->node.next && &desc->node != ioat_chan->used_desc.next; desc = to_ioat_desc(desc->node.next)) { - if (desc->async_tx.cookie) { - cookie = desc->async_tx.cookie; - desc->async_tx.cookie = 0; + if (tx->cookie) { + cookie = tx->cookie; + tx->cookie = 0; ioat_dma_unmap(ioat_chan, desc); - if (desc->async_tx.callback) { - desc->async_tx.callback(desc->async_tx.callback_param); - desc->async_tx.callback = NULL; + if (tx->callback) { + tx->callback(tx->callback_param); + tx->callback = NULL; } } } @@ -1245,10 +1231,9 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan) * @done: if not %NULL, updated with last completed transaction * @used: if not %NULL, updated with last used transaction */ -static enum dma_status ioat_dma_is_complete(struct dma_chan *chan, - dma_cookie_t cookie, - dma_cookie_t *done, - dma_cookie_t *used) +static enum dma_status +ioat_dma_is_complete(struct dma_chan *chan, dma_cookie_t cookie, + dma_cookie_t *done, dma_cookie_t *used) { struct ioat_dma_chan *ioat_chan = to_ioat_chan(chan); dma_cookie_t last_used; @@ -1290,7 +1275,7 @@ static void ioat_dma_start_null_desc(struct ioat_dma_chan *ioat_chan) desc = ioat_dma_get_next_descriptor(ioat_chan); if (!desc) { - dev_err(&ioat_chan->device->pdev->dev, + dev_err(to_dev(ioat_chan), "Unable to start null desc - get next desc failed\n"); spin_unlock_bh(&ioat_chan->desc_lock); return; @@ -1303,15 +1288,15 @@ static void ioat_dma_start_null_desc(struct ioat_dma_chan *ioat_chan) desc->hw->size = NULL_DESC_BUFFER_SIZE; desc->hw->src_addr = 0; desc->hw->dst_addr = 0; - async_tx_ack(&desc->async_tx); + async_tx_ack(&desc->txd); switch (ioat_chan->device->version) { case IOAT_VER_1_2: desc->hw->next = 0; list_add_tail(&desc->node, &ioat_chan->used_desc); - writel(((u64) desc->async_tx.phys) & 0x00000000FFFFFFFF, + writel(((u64) desc->txd.phys) & 0x00000000FFFFFFFF, ioat_chan->reg_base + IOAT1_CHAINADDR_OFFSET_LOW); - writel(((u64) desc->async_tx.phys) >> 32, + writel(((u64) desc->txd.phys) >> 32, ioat_chan->reg_base + IOAT1_CHAINADDR_OFFSET_HIGH); writeb(IOAT_CHANCMD_START, ioat_chan->reg_base @@ -1319,9 +1304,9 @@ static void ioat_dma_start_null_desc(struct ioat_dma_chan *ioat_chan) break; case IOAT_VER_2_0: case IOAT_VER_3_0: - writel(((u64) desc->async_tx.phys) & 0x00000000FFFFFFFF, + writel(((u64) desc->txd.phys) & 0x00000000FFFFFFFF, ioat_chan->reg_base + IOAT2_CHAINADDR_OFFSET_LOW); - writel(((u64) desc->async_tx.phys) >> 32, + writel(((u64) desc->txd.phys) >> 32, ioat_chan->reg_base + IOAT2_CHAINADDR_OFFSET_HIGH); ioat_chan->dmacount++; @@ -1352,6 +1337,8 @@ static int ioat_dma_self_test(struct ioatdma_device *device) int i; u8 *src; u8 *dest; + struct dma_device *dma = &device->common; + struct device *dev = &device->pdev->dev; struct dma_chan *dma_chan; struct dma_async_tx_descriptor *tx; dma_addr_t dma_dest, dma_src; @@ -1375,26 +1362,21 @@ static int ioat_dma_self_test(struct ioatdma_device *device) src[i] = (u8)i; /* Start copy, using first DMA channel */ - dma_chan = container_of(device->common.channels.next, - struct dma_chan, + dma_chan = container_of(dma->channels.next, struct dma_chan, device_node); - if (device->common.device_alloc_chan_resources(dma_chan) < 1) { - dev_err(&device->pdev->dev, - "selftest cannot allocate chan resource\n"); + if (dma->device_alloc_chan_resources(dma_chan) < 1) { + dev_err(dev, "selftest cannot allocate chan resource\n"); err = -ENODEV; goto out; } - 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); + dma_src = dma_map_single(dev, src, IOAT_TEST_SIZE, DMA_TO_DEVICE); + dma_dest = dma_map_single(dev, dest, IOAT_TEST_SIZE, DMA_FROM_DEVICE); flags = DMA_COMPL_SRC_UNMAP_SINGLE | DMA_COMPL_DEST_UNMAP_SINGLE; tx = device->common.device_prep_dma_memcpy(dma_chan, dma_dest, dma_src, IOAT_TEST_SIZE, flags); if (!tx) { - dev_err(&device->pdev->dev, - "Self-test prep failed, disabling\n"); + dev_err(dev, "Self-test prep failed, disabling\n"); err = -ENODEV; goto free_resources; } @@ -1405,32 +1387,29 @@ static int ioat_dma_self_test(struct ioatdma_device *device) tx->callback_param = &cmp; cookie = tx->tx_submit(tx); if (cookie < 0) { - dev_err(&device->pdev->dev, - "Self-test setup failed, disabling\n"); + dev_err(dev, "Self-test setup failed, disabling\n"); err = -ENODEV; goto free_resources; } - device->common.device_issue_pending(dma_chan); + dma->device_issue_pending(dma_chan); tmo = wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000)); if (tmo == 0 || - device->common.device_is_tx_complete(dma_chan, cookie, NULL, NULL) + dma->device_is_tx_complete(dma_chan, cookie, NULL, NULL) != DMA_SUCCESS) { - dev_err(&device->pdev->dev, - "Self-test copy timed out, disabling\n"); + dev_err(dev, "Self-test copy timed out, disabling\n"); err = -ENODEV; goto free_resources; } if (memcmp(src, dest, IOAT_TEST_SIZE)) { - dev_err(&device->pdev->dev, - "Self-test copy failed compare, disabling\n"); + dev_err(dev, "Self-test copy failed compare, disabling\n"); err = -ENODEV; goto free_resources; } free_resources: - device->common.device_free_chan_resources(dma_chan); + dma->device_free_chan_resources(dma_chan); out: kfree(src); kfree(dest); @@ -1483,15 +1462,14 @@ msix: for (i = 0; i < msixcnt; i++) { msix = &device->msix_entries[i]; - ioat_chan = ioat_lookup_chan_by_index(device, i); + ioat_chan = ioat_chan_by_index(device, i); err = devm_request_irq(dev, msix->vector, ioat_dma_do_interrupt_msix, 0, "ioat-msix", ioat_chan); if (err) { for (j = 0; j < i; j++) { msix = &device->msix_entries[j]; - ioat_chan = - ioat_lookup_chan_by_index(device, j); + ioat_chan = ioat_chan_by_index(device, j); devm_free_irq(dev, msix->vector, ioat_chan); } goto msix_single_vector; @@ -1561,12 +1539,13 @@ static void ioat_disable_interrupts(struct ioatdma_device *device) writeb(0, device->reg_base + IOAT_INTRCTRL_OFFSET); } -struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev, - void __iomem *iobase) +struct ioatdma_device * +ioat_dma_probe(struct pci_dev *pdev, void __iomem *iobase) { int err; struct device *dev = &pdev->dev; struct ioatdma_device *device; + struct dma_device *dma; device = devm_kzalloc(dev, sizeof(*device), GFP_KERNEL); if (!device) @@ -1574,6 +1553,7 @@ struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev, device->pdev = pdev; device->reg_base = iobase; device->version = readb(device->reg_base + IOAT_VER_OFFSET); + dma = &device->common; /* DMA coherent memory pool for DMA descriptor allocations */ device->dma_pool = pci_pool_create("dma_desc_pool", pdev, @@ -1592,36 +1572,32 @@ struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev, goto err_completion_pool; } - INIT_LIST_HEAD(&device->common.channels); + INIT_LIST_HEAD(&dma->channels); ioat_dma_enumerate_channels(device); - device->common.device_alloc_chan_resources = - ioat_dma_alloc_chan_resources; - device->common.device_free_chan_resources = - ioat_dma_free_chan_resources; - device->common.dev = &pdev->dev; + dma->device_alloc_chan_resources = ioat_dma_alloc_chan_resources; + dma->device_free_chan_resources = ioat_dma_free_chan_resources; + dma->dev = &pdev->dev; - dma_cap_set(DMA_MEMCPY, device->common.cap_mask); - device->common.device_is_tx_complete = ioat_dma_is_complete; + dma_cap_set(DMA_MEMCPY, dma->cap_mask); + dma->device_is_tx_complete = ioat_dma_is_complete; switch (device->version) { case IOAT_VER_1_2: - device->common.device_prep_dma_memcpy = ioat1_dma_prep_memcpy; - device->common.device_issue_pending = - ioat1_dma_memcpy_issue_pending; + dma->device_prep_dma_memcpy = ioat1_dma_prep_memcpy; + dma->device_issue_pending = ioat1_dma_memcpy_issue_pending; break; case IOAT_VER_2_0: case IOAT_VER_3_0: - device->common.device_prep_dma_memcpy = ioat2_dma_prep_memcpy; - device->common.device_issue_pending = - ioat2_dma_memcpy_issue_pending; + dma->device_prep_dma_memcpy = ioat2_dma_prep_memcpy; + dma->device_issue_pending = ioat2_dma_memcpy_issue_pending; break; } dev_err(dev, "Intel(R) I/OAT DMA Engine found," " %d channels, device version 0x%02x, driver version %s\n", - device->common.chancnt, device->version, IOAT_DMA_VERSION); + dma->chancnt, device->version, IOAT_DMA_VERSION); - if (!device->common.chancnt) { + if (!dma->chancnt) { dev_err(dev, "Intel(R) I/OAT DMA Engine problem found: " "zero channels detected\n"); goto err_setup_interrupts; @@ -1635,7 +1611,7 @@ struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev, if (err) goto err_self_test; - err = dma_async_device_register(&device->common); + err = dma_async_device_register(dma); if (err) goto err_self_test; @@ -1663,19 +1639,19 @@ void ioat_dma_remove(struct ioatdma_device *device) { struct dma_chan *chan, *_chan; struct ioat_dma_chan *ioat_chan; + struct dma_device *dma = &device->common; if (device->version != IOAT_VER_3_0) cancel_delayed_work(&device->work); ioat_disable_interrupts(device); - dma_async_device_unregister(&device->common); + dma_async_device_unregister(dma); pci_pool_destroy(device->dma_pool); pci_pool_destroy(device->completion_pool); - list_for_each_entry_safe(chan, _chan, - &device->common.channels, device_node) { + list_for_each_entry_safe(chan, _chan, &dma->channels, device_node) { ioat_chan = to_ioat_chan(chan); list_del(&chan->device_node); } diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index 5e8d7cfabc21..c5eabae4c1b9 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -38,7 +38,8 @@ #define to_ioat_chan(chan) container_of(chan, struct ioat_dma_chan, common) #define to_ioatdma_device(dev) container_of(dev, struct ioatdma_device, common) #define to_ioat_desc(lh) container_of(lh, struct ioat_desc_sw, node) -#define tx_to_ioat_desc(tx) container_of(tx, struct ioat_desc_sw, async_tx) +#define tx_to_ioat_desc(tx) container_of(tx, struct ioat_desc_sw, txd) +#define to_dev(ioat_chan) (&(ioat_chan)->device->pdev->dev) #define chan_num(ch) ((int)((ch)->reg_base - (ch)->device->reg_base) / 0x80) @@ -123,7 +124,7 @@ struct ioat_dma_chan { * @node: this descriptor will either be on the free list, * or attached to a transaction list (async_tx.tx_list) * @tx_cnt: number of descriptors required to complete the transaction - * @async_tx: the generic software descriptor for all engines + * @txd: the generic software descriptor for all engines */ struct ioat_desc_sw { struct ioat_dma_descriptor *hw; @@ -132,7 +133,7 @@ struct ioat_desc_sw { size_t len; dma_addr_t src; dma_addr_t dst; - struct dma_async_tx_descriptor async_tx; + struct dma_async_tx_descriptor txd; }; static inline void ioat_set_tcp_copy_break(struct ioatdma_device *dev) |