From 0951e728ff19d81a7b66ffbea2d449d2c0aa7645 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Tue, 26 May 2015 15:07:33 +0200 Subject: [PATCH] dmaengine: mv_xor: Rename function for consistent naming The current function names isn't very consistent, and functions with the same prefix might operate on either a channel or a descriptor, which is kind of confusing. Rename these functions to have a consistent and clearer naming scheme. Signed-off-by: Maxime Ripard Signed-off-by: Vinod Koul --- drivers/dma/mv_xor.c | 87 ++++++++++++++++++++++++++-------------------------- 1 file changed, 44 insertions(+), 43 deletions(-) diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 50f1b42..51433c4 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -104,7 +104,7 @@ static u32 mv_chan_get_intr_cause(struct mv_xor_chan *chan) return intr_cause; } -static void mv_xor_device_clear_eoc_cause(struct mv_xor_chan *chan) +static void mv_chan_clear_eoc_cause(struct mv_xor_chan *chan) { u32 val; @@ -114,14 +114,14 @@ static void mv_xor_device_clear_eoc_cause(struct mv_xor_chan *chan) writel_relaxed(val, XOR_INTR_CAUSE(chan)); } -static void mv_xor_device_clear_err_status(struct mv_xor_chan *chan) +static void mv_chan_clear_err_status(struct mv_xor_chan *chan) { u32 val = 0xFFFF0000 >> (chan->idx * 16); writel_relaxed(val, XOR_INTR_CAUSE(chan)); } -static void mv_set_mode(struct mv_xor_chan *chan, - enum dma_transaction_type type) +static void mv_chan_set_mode(struct mv_xor_chan *chan, + enum dma_transaction_type type) { u32 op_mode; u32 config = readl_relaxed(XOR_CONFIG(chan)); @@ -172,12 +172,12 @@ static char mv_chan_is_busy(struct mv_xor_chan *chan) } /** - * mv_xor_free_slots - flags descriptor slots for reuse + * mv_chan_free_slots - flags descriptor slots for reuse * @slot: Slot to free * Caller must hold &mv_chan->lock while calling this function */ -static void mv_xor_free_slots(struct mv_xor_chan *mv_chan, - struct mv_xor_desc_slot *slot) +static void mv_chan_free_slots(struct mv_xor_chan *mv_chan, + struct mv_xor_desc_slot *slot) { dev_dbg(mv_chan_to_devp(mv_chan), "%s %d slot %p\n", __func__, __LINE__, slot); @@ -187,12 +187,12 @@ static void mv_xor_free_slots(struct mv_xor_chan *mv_chan, } /* - * mv_xor_start_new_chain - program the engine to operate on new chain headed by - * sw_desc + * mv_chan_start_new_chain - program the engine to operate on new + * chain headed by sw_desc * Caller must hold &mv_chan->lock while calling this function */ -static void mv_xor_start_new_chain(struct mv_xor_chan *mv_chan, - struct mv_xor_desc_slot *sw_desc) +static void mv_chan_start_new_chain(struct mv_xor_chan *mv_chan, + struct mv_xor_desc_slot *sw_desc) { dev_dbg(mv_chan_to_devp(mv_chan), "%s %d: sw_desc %p\n", __func__, __LINE__, sw_desc); @@ -205,8 +205,9 @@ static void mv_xor_start_new_chain(struct mv_xor_chan *mv_chan, } static dma_cookie_t -mv_xor_run_tx_complete_actions(struct mv_xor_desc_slot *desc, - struct mv_xor_chan *mv_chan, dma_cookie_t cookie) +mv_desc_run_tx_complete_actions(struct mv_xor_desc_slot *desc, + struct mv_xor_chan *mv_chan, + dma_cookie_t cookie) { BUG_ON(desc->async_tx.cookie < 0); @@ -230,7 +231,7 @@ mv_xor_run_tx_complete_actions(struct mv_xor_desc_slot *desc, } static int -mv_xor_clean_completed_slots(struct mv_xor_chan *mv_chan) +mv_chan_clean_completed_slots(struct mv_xor_chan *mv_chan) { struct mv_xor_desc_slot *iter, *_iter; @@ -240,15 +241,15 @@ mv_xor_clean_completed_slots(struct mv_xor_chan *mv_chan) if (async_tx_test_ack(&iter->async_tx)) { list_del(&iter->completed_node); - mv_xor_free_slots(mv_chan, iter); + mv_chan_free_slots(mv_chan, iter); } } return 0; } static int -mv_xor_clean_slot(struct mv_xor_desc_slot *desc, - struct mv_xor_chan *mv_chan) +mv_desc_clean_slot(struct mv_xor_desc_slot *desc, + struct mv_xor_chan *mv_chan) { dev_dbg(mv_chan_to_devp(mv_chan), "%s %d: desc %p flags %d\n", __func__, __LINE__, desc, desc->async_tx.flags); @@ -262,12 +263,12 @@ mv_xor_clean_slot(struct mv_xor_desc_slot *desc, return 0; } - mv_xor_free_slots(mv_chan, desc); + mv_chan_free_slots(mv_chan, desc); return 0; } /* This function must be called with the mv_xor_chan spinlock held */ -static void mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan) +static void mv_chan_slot_cleanup(struct mv_xor_chan *mv_chan) { struct mv_xor_desc_slot *iter, *_iter; dma_cookie_t cookie = 0; @@ -278,7 +279,7 @@ static void mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan) dev_dbg(mv_chan_to_devp(mv_chan), "%s %d\n", __func__, __LINE__); dev_dbg(mv_chan_to_devp(mv_chan), "current_desc %x\n", current_desc); - mv_xor_clean_completed_slots(mv_chan); + mv_chan_clean_completed_slots(mv_chan); /* free completed slots from the chain starting with * the oldest descriptor @@ -290,11 +291,11 @@ static void mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan) /* clean finished descriptors */ hw_desc = iter->hw_desc; if (hw_desc->status & XOR_DESC_SUCCESS) { - cookie = mv_xor_run_tx_complete_actions(iter, mv_chan, - cookie); + cookie = mv_desc_run_tx_complete_actions(iter, mv_chan, + cookie); /* done processing desc, clean slot */ - mv_xor_clean_slot(iter, mv_chan); + mv_desc_clean_slot(iter, mv_chan); /* break if we did cleaned the current */ if (iter->async_tx.phys == current_desc) { @@ -318,7 +319,7 @@ static void mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan) iter = list_entry(mv_chan->chain.next, struct mv_xor_desc_slot, chain_node); - mv_xor_start_new_chain(mv_chan, iter); + mv_chan_start_new_chain(mv_chan, iter); } else { if (!list_is_last(&iter->chain_node, &mv_chan->chain)) { /* @@ -328,7 +329,7 @@ static void mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan) iter = list_entry(iter->chain_node.next, struct mv_xor_desc_slot, chain_node); - mv_xor_start_new_chain(mv_chan, iter); + mv_chan_start_new_chain(mv_chan, iter); } else { /* * some descriptors are still waiting @@ -348,12 +349,12 @@ static void mv_xor_tasklet(unsigned long data) struct mv_xor_chan *chan = (struct mv_xor_chan *) data; spin_lock_bh(&chan->lock); - mv_xor_slot_cleanup(chan); + mv_chan_slot_cleanup(chan); spin_unlock_bh(&chan->lock); } static struct mv_xor_desc_slot * -mv_xor_alloc_slot(struct mv_xor_chan *mv_chan) +mv_chan_alloc_slot(struct mv_xor_chan *mv_chan) { struct mv_xor_desc_slot *iter, *_iter; int retry = 0; @@ -451,7 +452,7 @@ mv_xor_tx_submit(struct dma_async_tx_descriptor *tx) } if (new_hw_chain) - mv_xor_start_new_chain(mv_chan, sw_desc); + mv_chan_start_new_chain(mv_chan, sw_desc); spin_unlock_bh(&mv_chan->lock); @@ -524,7 +525,7 @@ mv_xor_prep_dma_xor(struct dma_chan *chan, dma_addr_t dest, dma_addr_t *src, __func__, src_cnt, len, &dest, flags); spin_lock_bh(&mv_chan->lock); - sw_desc = mv_xor_alloc_slot(mv_chan); + sw_desc = mv_chan_alloc_slot(mv_chan); if (sw_desc) { sw_desc->type = DMA_XOR; sw_desc->async_tx.flags = flags; @@ -576,7 +577,7 @@ static void mv_xor_free_chan_resources(struct dma_chan *chan) spin_lock_bh(&mv_chan->lock); - mv_xor_slot_cleanup(mv_chan); + mv_chan_slot_cleanup(mv_chan); list_for_each_entry_safe(iter, _iter, &mv_chan->chain, chain_node) { @@ -623,13 +624,13 @@ static enum dma_status mv_xor_status(struct dma_chan *chan, return ret; spin_lock_bh(&mv_chan->lock); - mv_xor_slot_cleanup(mv_chan); + mv_chan_slot_cleanup(mv_chan); spin_unlock_bh(&mv_chan->lock); return dma_cookie_status(chan, cookie, txstate); } -static void mv_dump_xor_regs(struct mv_xor_chan *chan) +static void mv_chan_dump_regs(struct mv_xor_chan *chan) { u32 val; @@ -652,8 +653,8 @@ static void mv_dump_xor_regs(struct mv_xor_chan *chan) dev_err(mv_chan_to_devp(chan), "error addr 0x%08x\n", val); } -static void mv_xor_err_interrupt_handler(struct mv_xor_chan *chan, - u32 intr_cause) +static void mv_chan_err_interrupt_handler(struct mv_xor_chan *chan, + u32 intr_cause) { if (intr_cause & XOR_INT_ERR_DECODE) { dev_dbg(mv_chan_to_devp(chan), "ignoring address decode error\n"); @@ -663,7 +664,7 @@ static void mv_xor_err_interrupt_handler(struct mv_xor_chan *chan, dev_err(mv_chan_to_devp(chan), "error on chan %d. intr cause 0x%08x\n", chan->idx, intr_cause); - mv_dump_xor_regs(chan); + mv_chan_dump_regs(chan); WARN_ON(1); } @@ -675,11 +676,11 @@ static irqreturn_t mv_xor_interrupt_handler(int irq, void *data) dev_dbg(mv_chan_to_devp(chan), "intr cause %x\n", intr_cause); if (intr_cause & XOR_INTR_ERRORS) - mv_xor_err_interrupt_handler(chan, intr_cause); + mv_chan_err_interrupt_handler(chan, intr_cause); tasklet_schedule(&chan->irq_tasklet); - mv_xor_device_clear_eoc_cause(chan); + mv_chan_clear_eoc_cause(chan); return IRQ_HANDLED; } @@ -698,7 +699,7 @@ static void mv_xor_issue_pending(struct dma_chan *chan) * Perform a transaction to verify the HW works. */ -static int mv_xor_memcpy_self_test(struct mv_xor_chan *mv_chan) +static int mv_chan_memcpy_self_test(struct mv_xor_chan *mv_chan) { int i, ret; void *src, *dest; @@ -807,7 +808,7 @@ out: #define MV_XOR_NUM_SRC_TEST 4 /* must be <= 15 */ static int -mv_xor_xor_self_test(struct mv_xor_chan *mv_chan) +mv_chan_xor_self_test(struct mv_xor_chan *mv_chan) { int i, src_idx, ret; struct page *dest; @@ -1034,7 +1035,7 @@ mv_xor_channel_add(struct mv_xor_device *xordev, mv_chan); /* clear errors before enabling interrupts */ - mv_xor_device_clear_err_status(mv_chan); + mv_chan_clear_err_status(mv_chan); ret = request_irq(mv_chan->irq, mv_xor_interrupt_handler, 0, dev_name(&pdev->dev), mv_chan); @@ -1043,7 +1044,7 @@ mv_xor_channel_add(struct mv_xor_device *xordev, mv_chan_unmask_interrupts(mv_chan); - mv_set_mode(mv_chan, DMA_XOR); + mv_chan_set_mode(mv_chan, DMA_XOR); spin_lock_init(&mv_chan->lock); INIT_LIST_HEAD(&mv_chan->chain); @@ -1055,14 +1056,14 @@ mv_xor_channel_add(struct mv_xor_device *xordev, list_add_tail(&mv_chan->dmachan.device_node, &dma_dev->channels); if (dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask)) { - ret = mv_xor_memcpy_self_test(mv_chan); + ret = mv_chan_memcpy_self_test(mv_chan); dev_dbg(&pdev->dev, "memcpy self test returned %d\n", ret); if (ret) goto err_free_irq; } if (dma_has_cap(DMA_XOR, dma_dev->cap_mask)) { - ret = mv_xor_xor_self_test(mv_chan); + ret = mv_chan_xor_self_test(mv_chan); dev_dbg(&pdev->dev, "xor self test returned %d\n", ret); if (ret) goto err_free_irq; -- 2.7.4