From dcc043dc0c60046cf6b75ca04a462314cf64e2ba Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Wed, 1 Feb 2012 16:12:18 +0530 Subject: dmaengine: Add flow controller information to dma_slave_config Flow controller is programmable for few controllers and there are few intelligent peripherals like, Synopsys JPEG controller, that needs to be a flow controller of DMA transfers on dest side. For this, currently two drivers, pl08x and dw_dmac, support flow controller to be passed from platform to these drivers. Perhaps, this should be a part of struct dma_slave_config. This patch adds another field device_fc to this structure. User drivers must pass this as true if they want to be flow controller of certain transfers. Signed-off-by: Viresh Kumar Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux/dmaengine.h') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 679b349d9b66..7e640bf27d2d 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -25,6 +25,7 @@ #include #include #include +#include #include /** @@ -331,6 +332,9 @@ enum dma_slave_buswidth { * may or may not be applicable on memory sources. * @dst_maxburst: same as src_maxburst but for destination target * mutatis mutandis. + * @device_fc: Flow Controller Settings. Only valid for slave channels. Fill + * with 'true' if peripheral should be flow controller. Direction will be + * selected at Runtime. * * This struct is passed in as configuration data to a DMA engine * in order to set up a certain channel for DMA transport at runtime. @@ -357,6 +361,7 @@ struct dma_slave_config { enum dma_slave_buswidth dst_addr_width; u32 src_maxburst; u32 dst_maxburst; + bool device_fc; }; static inline const char *dma_chan_name(struct dma_chan *chan) -- cgit From 4d4e58de32a192fea65ab84509d17d199bd291c8 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Tue, 6 Mar 2012 22:34:06 +0000 Subject: dmaengine: move last completed cookie into generic dma_chan structure Every DMA engine implementation declares a last completed dma cookie in their private dma channel structures. This is pointless, and forces driver specific code. Move this out into the common dma_chan structure. Signed-off-by: Russell King Tested-by: Linus Walleij Reviewed-by: Linus Walleij Acked-by: Jassi Brar [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo Signed-off-by: Vinod Koul --- arch/arm/include/asm/hardware/iop_adma.h | 2 -- drivers/dma/amba-pl08x.c | 8 ++++---- drivers/dma/at_hdmac.c | 10 +++++----- drivers/dma/at_hdmac_regs.h | 2 -- drivers/dma/coh901318.c | 7 +++---- drivers/dma/dw_dmac.c | 10 +++++----- drivers/dma/dw_dmac_regs.h | 1 - drivers/dma/ep93xx_dma.c | 8 +++----- drivers/dma/fsldma.c | 4 ++-- drivers/dma/fsldma.h | 1 - drivers/dma/imx-dma.c | 7 +++---- drivers/dma/imx-sdma.c | 5 ++--- drivers/dma/intel_mid_dma.c | 9 ++++----- drivers/dma/intel_mid_dma_regs.h | 2 -- drivers/dma/ioat/dma.c | 2 +- drivers/dma/ioat/dma.h | 4 +--- drivers/dma/ioat/dma_v2.c | 2 +- drivers/dma/ioat/dma_v3.c | 2 +- drivers/dma/iop-adma.c | 10 +++++----- drivers/dma/ipu/ipu_idmac.c | 10 ++++------ drivers/dma/mpc512x_dma.c | 7 +++---- drivers/dma/mv_xor.c | 6 +++--- drivers/dma/mv_xor.h | 2 -- drivers/dma/mxs-dma.c | 5 ++--- drivers/dma/pch_dma.c | 5 ++--- drivers/dma/pl330.c | 9 +++------ drivers/dma/ppc4xx/adma.c | 10 +++++----- drivers/dma/ppc4xx/adma.h | 2 -- drivers/dma/shdma.c | 10 +++++----- drivers/dma/shdma.h | 1 - drivers/dma/sirf-dma.c | 7 +++---- drivers/dma/ste_dma40.c | 10 +++------- drivers/dma/timb_dma.c | 7 +++---- drivers/dma/txx9dmac.c | 10 +++++----- drivers/dma/txx9dmac.h | 1 - include/linux/amba/pl08x.h | 2 -- include/linux/dmaengine.h | 2 ++ 37 files changed, 83 insertions(+), 119 deletions(-) (limited to 'include/linux/dmaengine.h') diff --git a/arch/arm/include/asm/hardware/iop_adma.h b/arch/arm/include/asm/hardware/iop_adma.h index 59b8c3892f76..122f86d8c991 100644 --- a/arch/arm/include/asm/hardware/iop_adma.h +++ b/arch/arm/include/asm/hardware/iop_adma.h @@ -49,7 +49,6 @@ struct iop_adma_device { /** * struct iop_adma_chan - internal representation of an ADMA device * @pending: allows batching of hardware operations - * @completed_cookie: identifier for the most recently completed operation * @lock: serializes enqueue/dequeue operations to the slot pool * @mmr_base: memory mapped register base * @chain: device chain view of the descriptors @@ -62,7 +61,6 @@ struct iop_adma_device { */ struct iop_adma_chan { int pending; - dma_cookie_t completed_cookie; spinlock_t lock; /* protects the descriptor slot pool */ void __iomem *mmr_base; struct list_head chain; diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 513184b4fdd1..e510447a685a 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -971,7 +971,7 @@ static enum dma_status pl08x_dma_tx_status(struct dma_chan *chan, u32 bytesleft = 0; last_used = plchan->chan.cookie; - last_complete = plchan->lc; + last_complete = plchan->chan.completed_cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); if (ret == DMA_SUCCESS) { @@ -983,7 +983,7 @@ static enum dma_status pl08x_dma_tx_status(struct dma_chan *chan, * This cookie not complete yet */ last_used = plchan->chan.cookie; - last_complete = plchan->lc; + last_complete = plchan->chan.completed_cookie; /* Get number of bytes left in the active transactions and queue */ bytesleft = pl08x_getbytes_chan(plchan); @@ -1543,7 +1543,7 @@ static void pl08x_tasklet(unsigned long data) if (txd) { /* Update last completed */ - plchan->lc = txd->tx.cookie; + plchan->chan.completed_cookie = txd->tx.cookie; } /* If a new descriptor is queued, set it up plchan->at is NULL here */ @@ -1725,7 +1725,7 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x, chan->chan.device = dmadev; chan->chan.cookie = 0; - chan->lc = 0; + chan->chan.completed_cookie = 0; spin_lock_init(&chan->lock); INIT_LIST_HEAD(&chan->pend_list); diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index f4aed5fc2cb6..6baf5d717262 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -269,7 +269,7 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc) dev_vdbg(chan2dev(&atchan->chan_common), "descriptor %u complete\n", txd->cookie); - atchan->completed_cookie = txd->cookie; + atchan->chan_common.completed_cookie = txd->cookie; /* move children to free_list */ list_splice_init(&desc->tx_list, &atchan->free_list); @@ -1016,14 +1016,14 @@ atc_tx_status(struct dma_chan *chan, spin_lock_irqsave(&atchan->lock, flags); - last_complete = atchan->completed_cookie; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); if (ret != DMA_SUCCESS) { atc_cleanup_descriptors(atchan); - last_complete = atchan->completed_cookie; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); @@ -1129,7 +1129,7 @@ static int atc_alloc_chan_resources(struct dma_chan *chan) spin_lock_irqsave(&atchan->lock, flags); atchan->descs_allocated = i; list_splice(&tmp_list, &atchan->free_list); - atchan->completed_cookie = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; spin_unlock_irqrestore(&atchan->lock, flags); /* channel parameters */ @@ -1329,7 +1329,7 @@ static int __init at_dma_probe(struct platform_device *pdev) struct at_dma_chan *atchan = &atdma->chan[i]; atchan->chan_common.device = &atdma->dma_common; - atchan->chan_common.cookie = atchan->completed_cookie = 1; + atchan->chan_common.cookie = atchan->chan_common.completed_cookie = 1; list_add_tail(&atchan->chan_common.device_node, &atdma->dma_common.channels); diff --git a/drivers/dma/at_hdmac_regs.h b/drivers/dma/at_hdmac_regs.h index a8d3277d60b5..08fd8a0ae797 100644 --- a/drivers/dma/at_hdmac_regs.h +++ b/drivers/dma/at_hdmac_regs.h @@ -208,7 +208,6 @@ enum atc_status { * @save_dscr: for cyclic operations, preserve next descriptor address in * the cyclic list on suspend/resume cycle * @lock: serializes enqueue/dequeue operations to descriptors lists - * @completed_cookie: identifier for the most recently completed operation * @active_list: list of descriptors dmaengine is being running on * @queue: list of descriptors ready to be submitted to engine * @free_list: list of descriptors usable by the channel @@ -227,7 +226,6 @@ struct at_dma_chan { spinlock_t lock; /* these other elements are all protected by lock */ - dma_cookie_t completed_cookie; struct list_head active_list; struct list_head queue; struct list_head free_list; diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index d65a718c0f9b..521434bc3130 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -59,7 +59,6 @@ struct coh901318_base { struct coh901318_chan { spinlock_t lock; int allocated; - int completed; int id; int stopped; @@ -705,7 +704,7 @@ static void dma_tasklet(unsigned long data) callback_param = cohd_fin->desc.callback_param; /* sign this job as completed on the channel */ - cohc->completed = cohd_fin->desc.cookie; + cohc->chan.completed_cookie = cohd_fin->desc.cookie; /* release the lli allocation and remove the descriptor */ coh901318_lli_free(&cohc->base->pool, &cohd_fin->lli); @@ -929,7 +928,7 @@ static int coh901318_alloc_chan_resources(struct dma_chan *chan) coh901318_config(cohc, NULL); cohc->allocated = 1; - cohc->completed = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; spin_unlock_irqrestore(&cohc->lock, flags); @@ -1169,7 +1168,7 @@ coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie, dma_cookie_t last_complete; int ret; - last_complete = cohc->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 0e4b5c6a2f86..5bd23006ff4a 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -249,7 +249,7 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc, dev_vdbg(chan2dev(&dwc->chan), "descriptor %u complete\n", txd->cookie); spin_lock_irqsave(&dwc->lock, flags); - dwc->completed = txd->cookie; + dwc->chan.completed_cookie = txd->cookie; if (callback_required) { callback = txd->callback; param = txd->callback_param; @@ -997,14 +997,14 @@ dwc_tx_status(struct dma_chan *chan, dma_cookie_t last_complete; int ret; - last_complete = dwc->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); if (ret != DMA_SUCCESS) { dwc_scan_descriptors(to_dw_dma(chan->device), dwc); - last_complete = dwc->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); @@ -1046,7 +1046,7 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan) return -EIO; } - dwc->completed = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; /* * NOTE: some controllers may have additional features that we @@ -1474,7 +1474,7 @@ static int __init dw_probe(struct platform_device *pdev) struct dw_dma_chan *dwc = &dw->chan[i]; dwc->chan.device = &dw->dma; - dwc->chan.cookie = dwc->completed = 1; + dwc->chan.cookie = dwc->chan.completed_cookie = 1; if (pdata->chan_allocation_order == CHAN_ALLOCATION_ASCENDING) list_add_tail(&dwc->chan.device_node, &dw->dma.channels); diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h index eec0481a12f7..f298f69ecbf9 100644 --- a/drivers/dma/dw_dmac_regs.h +++ b/drivers/dma/dw_dmac_regs.h @@ -158,7 +158,6 @@ struct dw_dma_chan { /* these other elements are all protected by lock */ unsigned long flags; - dma_cookie_t completed; struct list_head active_list; struct list_head queue; struct list_head free_list; diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index 59e7a965772b..bc457878cffd 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -122,7 +122,6 @@ struct ep93xx_dma_desc { * @lock: lock protecting the fields following * @flags: flags for the channel * @buffer: which buffer to use next (0/1) - * @last_completed: last completed cookie value * @active: flattened chain of descriptors currently being processed * @queue: pending descriptors which are handled next * @free_list: list of free descriptors which can be used @@ -157,7 +156,6 @@ struct ep93xx_dma_chan { #define EP93XX_DMA_IS_CYCLIC 0 int buffer; - dma_cookie_t last_completed; struct list_head active; struct list_head queue; struct list_head free_list; @@ -703,7 +701,7 @@ static void ep93xx_dma_tasklet(unsigned long data) desc = ep93xx_dma_get_active(edmac); if (desc) { if (desc->complete) { - edmac->last_completed = desc->txd.cookie; + edmac->chan.completed_cookie = desc->txd.cookie; list_splice_init(&edmac->active, &list); } callback = desc->txd.callback; @@ -861,7 +859,7 @@ static int ep93xx_dma_alloc_chan_resources(struct dma_chan *chan) goto fail_clk_disable; spin_lock_irq(&edmac->lock); - edmac->last_completed = 1; + edmac->chan.completed_cookie = 1; edmac->chan.cookie = 1; ret = edmac->edma->hw_setup(edmac); spin_unlock_irq(&edmac->lock); @@ -1254,7 +1252,7 @@ static enum dma_status ep93xx_dma_tx_status(struct dma_chan *chan, spin_lock_irqsave(&edmac->lock, flags); last_used = chan->cookie; - last_completed = edmac->last_completed; + last_completed = chan->completed_cookie; spin_unlock_irqrestore(&edmac->lock, flags); ret = dma_async_is_complete(cookie, last_completed, last_used); diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index b98070c33ca9..9b5cb8a43cfa 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -990,7 +990,7 @@ static enum dma_status fsl_tx_status(struct dma_chan *dchan, spin_lock_irqsave(&chan->desc_lock, flags); - last_complete = chan->completed_cookie; + last_complete = dchan->completed_cookie; last_used = dchan->cookie; spin_unlock_irqrestore(&chan->desc_lock, flags); @@ -1088,7 +1088,7 @@ static void dma_do_tasklet(unsigned long data) desc = to_fsl_desc(chan->ld_running.prev); cookie = desc->async_tx.cookie; - chan->completed_cookie = cookie; + chan->common.completed_cookie = cookie; chan_dbg(chan, "completed_cookie=%d\n", cookie); } diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h index 9cb5aa57c677..f5c38791fc74 100644 --- a/drivers/dma/fsldma.h +++ b/drivers/dma/fsldma.h @@ -137,7 +137,6 @@ struct fsldma_device { struct fsldma_chan { char name[8]; /* Channel name */ struct fsldma_chan_regs __iomem *regs; - dma_cookie_t completed_cookie; /* The maximum cookie completed */ spinlock_t desc_lock; /* Descriptor operation lock */ struct list_head ld_pending; /* Link descriptors queue */ struct list_head ld_running; /* Link descriptors queue */ diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 3296a7337f25..d3ddcba87f81 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -41,7 +41,6 @@ struct imxdma_channel { struct dma_chan chan; spinlock_t lock; struct dma_async_tx_descriptor desc; - dma_cookie_t last_completed; enum dma_status status; int dma_request; struct scatterlist *sg_list; @@ -65,7 +64,7 @@ static void imxdma_handle(struct imxdma_channel *imxdmac) { if (imxdmac->desc.callback) imxdmac->desc.callback(imxdmac->desc.callback_param); - imxdmac->last_completed = imxdmac->desc.cookie; + imxdmac->chan.completed_cookie = imxdmac->desc.cookie; } static void imxdma_irq_handler(int channel, void *data) @@ -158,8 +157,8 @@ static enum dma_status imxdma_tx_status(struct dma_chan *chan, last_used = chan->cookie; - ret = dma_async_is_complete(cookie, imxdmac->last_completed, last_used); - dma_set_tx_state(txstate, imxdmac->last_completed, last_used, 0); + ret = dma_async_is_complete(cookie, chan->completed_cookie, last_used); + dma_set_tx_state(txstate, chan->completed_cookie, last_used, 0); return ret; } diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index bf736ad679ca..49aa4e876645 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -267,7 +267,6 @@ struct sdma_channel { struct dma_chan chan; spinlock_t lock; struct dma_async_tx_descriptor desc; - dma_cookie_t last_completed; enum dma_status status; unsigned int chn_count; unsigned int chn_real_count; @@ -529,7 +528,7 @@ static void mxc_sdma_handle_channel_normal(struct sdma_channel *sdmac) else sdmac->status = DMA_SUCCESS; - sdmac->last_completed = sdmac->desc.cookie; + sdmac->chan.completed_cookie = sdmac->desc.cookie; if (sdmac->desc.callback) sdmac->desc.callback(sdmac->desc.callback_param); } @@ -1127,7 +1126,7 @@ static enum dma_status sdma_tx_status(struct dma_chan *chan, last_used = chan->cookie; - dma_set_tx_state(txstate, sdmac->last_completed, last_used, + dma_set_tx_state(txstate, chan->completed_cookie, last_used, sdmac->chn_count - sdmac->chn_real_count); return sdmac->status; diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c index 923476d74a5d..40e47e6c7ed8 100644 --- a/drivers/dma/intel_mid_dma.c +++ b/drivers/dma/intel_mid_dma.c @@ -288,7 +288,7 @@ static void midc_descriptor_complete(struct intel_mid_dma_chan *midc, struct intel_mid_dma_lli *llitem; void *param_txd = NULL; - midc->completed = txd->cookie; + midc->chan.completed_cookie = txd->cookie; callback_txd = txd->callback; param_txd = txd->callback_param; @@ -482,12 +482,11 @@ static enum dma_status intel_mid_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie, struct dma_tx_state *txstate) { - struct intel_mid_dma_chan *midc = to_intel_mid_dma_chan(chan); dma_cookie_t last_used; dma_cookie_t last_complete; int ret; - last_complete = midc->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); @@ -496,7 +495,7 @@ static enum dma_status intel_mid_dma_tx_status(struct dma_chan *chan, midc_scan_descriptors(to_middma_device(chan->device), midc); spin_unlock_bh(&midc->lock); - last_complete = midc->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); @@ -886,7 +885,7 @@ static int intel_mid_dma_alloc_chan_resources(struct dma_chan *chan) pm_runtime_put(&mid->pdev->dev); return -EIO; } - midc->completed = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; spin_lock_bh(&midc->lock); while (midc->descs_allocated < DESCS_PER_CHANNEL) { diff --git a/drivers/dma/intel_mid_dma_regs.h b/drivers/dma/intel_mid_dma_regs.h index c83d35b97bd8..1bfa9268feaf 100644 --- a/drivers/dma/intel_mid_dma_regs.h +++ b/drivers/dma/intel_mid_dma_regs.h @@ -165,7 +165,6 @@ union intel_mid_dma_cfg_hi { * @dma_base: MMIO register space DMA engine base pointer * @ch_id: DMA channel id * @lock: channel spinlock - * @completed: DMA cookie * @active_list: current active descriptors * @queue: current queued up descriptors * @free_list: current free descriptors @@ -183,7 +182,6 @@ struct intel_mid_dma_chan { void __iomem *dma_base; int ch_id; spinlock_t lock; - dma_cookie_t completed; struct list_head active_list; struct list_head queue; struct list_head free_list; diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index a4d6cb0c0343..fab440af1f9a 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -603,7 +603,7 @@ static void __cleanup(struct ioat_dma_chan *ioat, unsigned long phys_complete) */ dump_desc_dbg(ioat, desc); if (tx->cookie) { - chan->completed_cookie = tx->cookie; + chan->common.completed_cookie = tx->cookie; tx->cookie = 0; ioat_dma_unmap(chan, tx->flags, desc->len, desc->hw); ioat->active -= desc->hw->tx_cnt; diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index 5216c8a92a21..9653b6b6a715 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -90,7 +90,6 @@ struct ioat_chan_common { void __iomem *reg_base; unsigned long last_completion; spinlock_t cleanup_lock; - dma_cookie_t completed_cookie; unsigned long state; #define IOAT_COMPLETION_PENDING 0 #define IOAT_COMPLETION_ACK 1 @@ -153,12 +152,11 @@ static inline enum dma_status ioat_tx_status(struct dma_chan *c, dma_cookie_t cookie, struct dma_tx_state *txstate) { - struct ioat_chan_common *chan = to_chan_common(c); dma_cookie_t last_used; dma_cookie_t last_complete; last_used = c->cookie; - last_complete = chan->completed_cookie; + last_complete = c->completed_cookie; dma_set_tx_state(txstate, last_complete, last_used, 0); diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c index 5d65f8377971..d3f0aff2c02a 100644 --- a/drivers/dma/ioat/dma_v2.c +++ b/drivers/dma/ioat/dma_v2.c @@ -147,7 +147,7 @@ static void __cleanup(struct ioat2_dma_chan *ioat, unsigned long phys_complete) dump_desc_dbg(ioat, desc); if (tx->cookie) { ioat_dma_unmap(chan, tx->flags, desc->len, desc->hw); - chan->completed_cookie = tx->cookie; + chan->common.completed_cookie = tx->cookie; tx->cookie = 0; if (tx->callback) { tx->callback(tx->callback_param); diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index f519c93a61e7..d4afac741e8a 100644 --- a/drivers/dma/ioat/dma_v3.c +++ b/drivers/dma/ioat/dma_v3.c @@ -277,7 +277,7 @@ static void __cleanup(struct ioat2_dma_chan *ioat, unsigned long phys_complete) dump_desc_dbg(ioat, desc); tx = &desc->txd; if (tx->cookie) { - chan->completed_cookie = tx->cookie; + chan->common.completed_cookie = tx->cookie; ioat3_dma_unmap(ioat, desc, idx + i); tx->cookie = 0; if (tx->callback) { diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c index 04be90b645b8..d8027c2b42c0 100644 --- a/drivers/dma/iop-adma.c +++ b/drivers/dma/iop-adma.c @@ -317,7 +317,7 @@ static void __iop_adma_slot_cleanup(struct iop_adma_chan *iop_chan) } if (cookie > 0) { - iop_chan->completed_cookie = cookie; + iop_chan->common.completed_cookie = cookie; pr_debug("\tcompleted cookie %d\n", cookie); } } @@ -909,7 +909,7 @@ static enum dma_status iop_adma_status(struct dma_chan *chan, enum dma_status ret; last_used = chan->cookie; - last_complete = iop_chan->completed_cookie; + last_complete = chan->completed_cookie; dma_set_tx_state(txstate, last_complete, last_used, 0); ret = dma_async_is_complete(cookie, last_complete, last_used); if (ret == DMA_SUCCESS) @@ -918,7 +918,7 @@ static enum dma_status iop_adma_status(struct dma_chan *chan, iop_adma_slot_cleanup(iop_chan); last_used = chan->cookie; - last_complete = iop_chan->completed_cookie; + last_complete = chan->completed_cookie; dma_set_tx_state(txstate, last_complete, last_used, 0); return dma_async_is_complete(cookie, last_complete, last_used); @@ -1650,7 +1650,7 @@ static void iop_chan_start_null_memcpy(struct iop_adma_chan *iop_chan) /* initialize the completed cookie to be less than * the most recently used cookie */ - iop_chan->completed_cookie = cookie - 1; + iop_chan->common.completed_cookie = cookie - 1; iop_chan->common.cookie = sw_desc->async_tx.cookie = cookie; /* channel should not be busy */ @@ -1707,7 +1707,7 @@ static void iop_chan_start_null_xor(struct iop_adma_chan *iop_chan) /* initialize the completed cookie to be less than * the most recently used cookie */ - iop_chan->completed_cookie = cookie - 1; + iop_chan->common.completed_cookie = cookie - 1; iop_chan->common.cookie = sw_desc->async_tx.cookie = cookie; /* channel should not be busy */ diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c index 6212b16e8cf2..9149ade6a5d9 100644 --- a/drivers/dma/ipu/ipu_idmac.c +++ b/drivers/dma/ipu/ipu_idmac.c @@ -1295,7 +1295,7 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id) /* Flip the active buffer - even if update above failed */ ichan->active_buffer = !ichan->active_buffer; if (done) - ichan->completed = desc->txd.cookie; + ichan->dma_chan.completed_cookie = desc->txd.cookie; callback = desc->txd.callback; callback_param = desc->txd.callback_param; @@ -1511,7 +1511,7 @@ static int idmac_alloc_chan_resources(struct dma_chan *chan) WARN_ON(ichan->status != IPU_CHANNEL_FREE); chan->cookie = 1; - ichan->completed = -ENXIO; + chan->completed_cookie = -ENXIO; ret = ipu_irq_map(chan->chan_id); if (ret < 0) @@ -1600,9 +1600,7 @@ static void idmac_free_chan_resources(struct dma_chan *chan) static enum dma_status idmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie, struct dma_tx_state *txstate) { - struct idmac_channel *ichan = to_idmac_chan(chan); - - dma_set_tx_state(txstate, ichan->completed, chan->cookie, 0); + dma_set_tx_state(txstate, chan->completed_cookie, chan->cookie, 0); if (cookie != chan->cookie) return DMA_ERROR; return DMA_SUCCESS; @@ -1638,11 +1636,11 @@ static int __init ipu_idmac_init(struct ipu *ipu) ichan->status = IPU_CHANNEL_FREE; ichan->sec_chan_en = false; - ichan->completed = -ENXIO; snprintf(ichan->eof_name, sizeof(ichan->eof_name), "IDMAC EOF %d", i); dma_chan->device = &idmac->dma; dma_chan->cookie = 1; + dma_chan->completed_cookie = -ENXIO; dma_chan->chan_id = i; list_add_tail(&dma_chan->device_node, &dma->channels); } diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c index 4d6d4cf66949..39a5cde9f428 100644 --- a/drivers/dma/mpc512x_dma.c +++ b/drivers/dma/mpc512x_dma.c @@ -188,7 +188,6 @@ struct mpc_dma_chan { struct list_head completed; struct mpc_dma_tcd *tcd; dma_addr_t tcd_paddr; - dma_cookie_t completed_cookie; /* Lock for this structure */ spinlock_t lock; @@ -365,7 +364,7 @@ static void mpc_dma_process_completed(struct mpc_dma *mdma) /* Free descriptors */ spin_lock_irqsave(&mchan->lock, flags); list_splice_tail_init(&list, &mchan->free); - mchan->completed_cookie = last_cookie; + mchan->chan.completed_cookie = last_cookie; spin_unlock_irqrestore(&mchan->lock, flags); } } @@ -568,7 +567,7 @@ mpc_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie, spin_lock_irqsave(&mchan->lock, flags); last_used = mchan->chan.cookie; - last_complete = mchan->completed_cookie; + last_complete = mchan->chan.completed_cookie; spin_unlock_irqrestore(&mchan->lock, flags); dma_set_tx_state(txstate, last_complete, last_used, 0); @@ -742,7 +741,7 @@ static int __devinit mpc_dma_probe(struct platform_device *op) mchan->chan.device = dma; mchan->chan.cookie = 1; - mchan->completed_cookie = mchan->chan.cookie; + mchan->chan.completed_cookie = mchan->chan.cookie; INIT_LIST_HEAD(&mchan->free); INIT_LIST_HEAD(&mchan->prepared); diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index ad7d03fe4cb4..c6a84dac112c 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -435,7 +435,7 @@ static void __mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan) } if (cookie > 0) - mv_chan->completed_cookie = cookie; + mv_chan->common.completed_cookie = cookie; } static void @@ -825,7 +825,7 @@ static enum dma_status mv_xor_status(struct dma_chan *chan, enum dma_status ret; last_used = chan->cookie; - last_complete = mv_chan->completed_cookie; + last_complete = chan->completed_cookie; dma_set_tx_state(txstate, last_complete, last_used, 0); ret = dma_async_is_complete(cookie, last_complete, last_used); @@ -836,7 +836,7 @@ static enum dma_status mv_xor_status(struct dma_chan *chan, mv_xor_slot_cleanup(mv_chan); last_used = chan->cookie; - last_complete = mv_chan->completed_cookie; + last_complete = chan->completed_cookie; dma_set_tx_state(txstate, last_complete, last_used, 0); return dma_async_is_complete(cookie, last_complete, last_used); diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h index da04ac23def3..654876b7ba1d 100644 --- a/drivers/dma/mv_xor.h +++ b/drivers/dma/mv_xor.h @@ -78,7 +78,6 @@ struct mv_xor_device { /** * struct mv_xor_chan - internal representation of a XOR channel * @pending: allows batching of hardware operations - * @completed_cookie: identifier for the most recently completed operation * @lock: serializes enqueue/dequeue operations to the descriptors pool * @mmr_base: memory mapped register base * @idx: the index of the xor channel @@ -93,7 +92,6 @@ struct mv_xor_device { */ struct mv_xor_chan { int pending; - dma_cookie_t completed_cookie; spinlock_t lock; /* protects the descriptor slot pool */ void __iomem *mmr_base; unsigned int idx; diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index b06cd4ca626f..3696e6e4143a 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -111,7 +111,6 @@ struct mxs_dma_chan { struct mxs_dma_ccw *ccw; dma_addr_t ccw_phys; int desc_count; - dma_cookie_t last_completed; enum dma_status status; unsigned int flags; #define MXS_DMA_SG_LOOP (1 << 0) @@ -274,7 +273,7 @@ static irqreturn_t mxs_dma_int_handler(int irq, void *dev_id) stat1 &= ~(1 << channel); if (mxs_chan->status == DMA_SUCCESS) - mxs_chan->last_completed = mxs_chan->desc.cookie; + mxs_chan->chan.completed_cookie = mxs_chan->desc.cookie; /* schedule tasklet on this channel */ tasklet_schedule(&mxs_chan->tasklet); @@ -538,7 +537,7 @@ static enum dma_status mxs_dma_tx_status(struct dma_chan *chan, dma_cookie_t last_used; last_used = chan->cookie; - dma_set_tx_state(txstate, mxs_chan->last_completed, last_used, 0); + dma_set_tx_state(txstate, chan->completed_cookie, last_used, 0); return mxs_chan->status; } diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c index 823f58179f9d..79a71858497c 100644 --- a/drivers/dma/pch_dma.c +++ b/drivers/dma/pch_dma.c @@ -105,7 +105,6 @@ struct pch_dma_chan { spinlock_t lock; - dma_cookie_t completed_cookie; struct list_head active_list; struct list_head queue; struct list_head free_list; @@ -544,7 +543,7 @@ static int pd_alloc_chan_resources(struct dma_chan *chan) spin_lock_irq(&pd_chan->lock); list_splice(&tmp_list, &pd_chan->free_list); pd_chan->descs_allocated = i; - pd_chan->completed_cookie = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; spin_unlock_irq(&pd_chan->lock); pdc_enable_irq(chan, 1); @@ -583,7 +582,7 @@ static enum dma_status pd_tx_status(struct dma_chan *chan, dma_cookie_t cookie, int ret; spin_lock_irq(&pd_chan->lock); - last_completed = pd_chan->completed_cookie; + last_completed = chan->completed_cookie; last_used = chan->cookie; spin_unlock_irq(&pd_chan->lock); diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 84ebea9bc53a..99c31a76e74e 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -51,9 +51,6 @@ struct dma_pl330_chan { /* DMA-Engine Channel */ struct dma_chan chan; - /* Last completed cookie */ - dma_cookie_t completed; - /* List of to be xfered descriptors */ struct list_head work_list; @@ -234,7 +231,7 @@ static void pl330_tasklet(unsigned long data) /* Pick up ripe tomatoes */ list_for_each_entry_safe(desc, _dt, &pch->work_list, node) if (desc->status == DONE) { - pch->completed = desc->txd.cookie; + pch->chan.completed_cookie = desc->txd.cookie; list_move_tail(&desc->node, &list); } @@ -305,7 +302,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan) spin_lock_irqsave(&pch->lock, flags); - pch->completed = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; pch->cyclic = false; pch->pl330_chid = pl330_request_channel(&pdmac->pif); @@ -400,7 +397,7 @@ pl330_tx_status(struct dma_chan *chan, dma_cookie_t cookie, dma_cookie_t last_done, last_used; int ret; - last_done = pch->completed; + last_done = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_done, last_used); diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index fc457a7e8832..f878322ecbcb 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -1930,7 +1930,7 @@ static void __ppc440spe_adma_slot_cleanup(struct ppc440spe_adma_chan *chan) if (end_of_chain && slot_cnt) { /* Should wait for ZeroSum completion */ if (cookie > 0) - chan->completed_cookie = cookie; + chan->common.completed_cookie = cookie; return; } @@ -1960,7 +1960,7 @@ static void __ppc440spe_adma_slot_cleanup(struct ppc440spe_adma_chan *chan) BUG_ON(!seen_current); if (cookie > 0) { - chan->completed_cookie = cookie; + chan->common.completed_cookie = cookie; pr_debug("\tcompleted cookie %d\n", cookie); } @@ -3950,7 +3950,7 @@ static enum dma_status ppc440spe_adma_tx_status(struct dma_chan *chan, ppc440spe_chan = to_ppc440spe_adma_chan(chan); last_used = chan->cookie; - last_complete = ppc440spe_chan->completed_cookie; + last_complete = chan->completed_cookie; dma_set_tx_state(txstate, last_complete, last_used, 0); @@ -3961,7 +3961,7 @@ static enum dma_status ppc440spe_adma_tx_status(struct dma_chan *chan, ppc440spe_adma_slot_cleanup(ppc440spe_chan); last_used = chan->cookie; - last_complete = ppc440spe_chan->completed_cookie; + last_complete = chan->completed_cookie; dma_set_tx_state(txstate, last_complete, last_used, 0); @@ -4058,7 +4058,7 @@ static void ppc440spe_chan_start_null_xor(struct ppc440spe_adma_chan *chan) /* initialize the completed cookie to be less than * the most recently used cookie */ - chan->completed_cookie = cookie - 1; + chan->common.completed_cookie = cookie - 1; chan->common.cookie = sw_desc->async_tx.cookie = cookie; /* channel should not be busy */ diff --git a/drivers/dma/ppc4xx/adma.h b/drivers/dma/ppc4xx/adma.h index 8ada5a812e3b..26b7a5ed9ac7 100644 --- a/drivers/dma/ppc4xx/adma.h +++ b/drivers/dma/ppc4xx/adma.h @@ -81,7 +81,6 @@ struct ppc440spe_adma_device { * @common: common dmaengine channel object members * @all_slots: complete domain of slots usable by the channel * @pending: allows batching of hardware operations - * @completed_cookie: identifier for the most recently completed operation * @slots_allocated: records the actual size of the descriptor slot pool * @hw_chain_inited: h/w descriptor chain initialization flag * @irq_tasklet: bottom half where ppc440spe_adma_slot_cleanup runs @@ -99,7 +98,6 @@ struct ppc440spe_adma_chan { struct list_head all_slots; struct ppc440spe_adma_desc_slot *last_used; int pending; - dma_cookie_t completed_cookie; int slots_allocated; int hw_chain_inited; struct tasklet_struct irq_tasklet; diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c index 812fd76e9c18..ae84c12e3865 100644 --- a/drivers/dma/shdma.c +++ b/drivers/dma/shdma.c @@ -764,12 +764,12 @@ static dma_async_tx_callback __ld_cleanup(struct sh_dmae_chan *sh_chan, bool all cookie = tx->cookie; if (desc->mark == DESC_COMPLETED && desc->chunks == 1) { - if (sh_chan->completed_cookie != desc->cookie - 1) + if (sh_chan->common.completed_cookie != desc->cookie - 1) dev_dbg(sh_chan->dev, "Completing cookie %d, expected %d\n", desc->cookie, - sh_chan->completed_cookie + 1); - sh_chan->completed_cookie = desc->cookie; + sh_chan->common.completed_cookie + 1); + sh_chan->common.completed_cookie = desc->cookie; } /* Call callback on the last chunk */ @@ -823,7 +823,7 @@ static dma_async_tx_callback __ld_cleanup(struct sh_dmae_chan *sh_chan, bool all * Terminating and the loop completed normally: forgive * uncompleted cookies */ - sh_chan->completed_cookie = sh_chan->common.cookie; + sh_chan->common.completed_cookie = sh_chan->common.cookie; spin_unlock_irqrestore(&sh_chan->desc_lock, flags); @@ -891,7 +891,7 @@ static enum dma_status sh_dmae_tx_status(struct dma_chan *chan, sh_dmae_chan_ld_cleanup(sh_chan, false); /* First read completed cookie to avoid a skew */ - last_complete = sh_chan->completed_cookie; + last_complete = chan->completed_cookie; rmb(); last_used = chan->cookie; BUG_ON(last_complete < 0); diff --git a/drivers/dma/shdma.h b/drivers/dma/shdma.h index 2b55a276dc5b..0b1d2c105f02 100644 --- a/drivers/dma/shdma.h +++ b/drivers/dma/shdma.h @@ -30,7 +30,6 @@ enum dmae_pm_state { }; struct sh_dmae_chan { - dma_cookie_t completed_cookie; /* The maximum cookie completed */ spinlock_t desc_lock; /* Descriptor operation lock */ struct list_head ld_queue; /* Link descriptors queue */ struct list_head ld_free; /* Link descriptors free */ diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c index 2333810d1688..60473f00cf1c 100644 --- a/drivers/dma/sirf-dma.c +++ b/drivers/dma/sirf-dma.c @@ -59,7 +59,6 @@ struct sirfsoc_dma_chan { struct list_head queued; struct list_head active; struct list_head completed; - dma_cookie_t completed_cookie; unsigned long happened_cyclic; unsigned long completed_cyclic; @@ -208,7 +207,7 @@ static void sirfsoc_dma_process_completed(struct sirfsoc_dma *sdma) /* Free descriptors */ spin_lock_irqsave(&schan->lock, flags); list_splice_tail_init(&list, &schan->free); - schan->completed_cookie = last_cookie; + schan->chan.completed_cookie = last_cookie; spin_unlock_irqrestore(&schan->lock, flags); } else { /* for cyclic channel, desc is always in active list */ @@ -419,7 +418,7 @@ sirfsoc_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie, spin_lock_irqsave(&schan->lock, flags); last_used = schan->chan.cookie; - last_complete = schan->completed_cookie; + last_complete = schan->chan.completed_cookie; spin_unlock_irqrestore(&schan->lock, flags); dma_set_tx_state(txstate, last_complete, last_used, 0); @@ -636,7 +635,7 @@ static int __devinit sirfsoc_dma_probe(struct platform_device *op) schan->chan.device = dma; schan->chan.cookie = 1; - schan->completed_cookie = schan->chan.cookie; + schan->chan.completed_cookie = schan->chan.cookie; INIT_LIST_HEAD(&schan->free); INIT_LIST_HEAD(&schan->prepared); diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index cc5ecbc067a3..cfca2a06d1af 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -220,8 +220,6 @@ struct d40_base; * * @lock: A spinlock to protect this struct. * @log_num: The logical number, if any of this channel. - * @completed: Starts with 1, after first interrupt it is set to dma engine's - * current cookie. * @pending_tx: The number of pending transfers. Used between interrupt handler * and tasklet. * @busy: Set to true when transfer is ongoing on this channel. @@ -250,8 +248,6 @@ struct d40_base; struct d40_chan { spinlock_t lock; int log_num; - /* ID of the most recent completed transfer */ - int completed; int pending_tx; bool busy; struct d40_phy_res *phy_chan; @@ -1357,7 +1353,7 @@ static void dma_tasklet(unsigned long data) goto err; if (!d40d->cyclic) - d40c->completed = d40d->txd.cookie; + d40c->chan.completed_cookie = d40d->txd.cookie; /* * If terminating a channel pending_tx is set to zero. @@ -2182,7 +2178,7 @@ static int d40_alloc_chan_resources(struct dma_chan *chan) bool is_free_phy; spin_lock_irqsave(&d40c->lock, flags); - d40c->completed = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; /* If no dma configuration is set use default configuration (memcpy) */ if (!d40c->configured) { @@ -2351,7 +2347,7 @@ static enum dma_status d40_tx_status(struct dma_chan *chan, return -EINVAL; } - last_complete = d40c->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; if (d40_is_paused(d40c)) diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c index a6f9c1684a0f..a1d15598cf7e 100644 --- a/drivers/dma/timb_dma.c +++ b/drivers/dma/timb_dma.c @@ -84,7 +84,6 @@ struct timb_dma_chan { especially the lists and descriptors, from races between the tasklet and calls from above */ - dma_cookie_t last_completed_cookie; bool ongoing; struct list_head active_list; struct list_head queue; @@ -284,7 +283,7 @@ static void __td_finish(struct timb_dma_chan *td_chan) else iowrite32(0, td_chan->membase + TIMBDMA_OFFS_TX_DLAR); */ - td_chan->last_completed_cookie = txd->cookie; + td_chan->chan.completed_cookie = txd->cookie; td_chan->ongoing = false; callback = txd->callback; @@ -481,7 +480,7 @@ static int td_alloc_chan_resources(struct dma_chan *chan) } spin_lock_bh(&td_chan->lock); - td_chan->last_completed_cookie = 1; + chan->completed_cookie = 1; chan->cookie = 1; spin_unlock_bh(&td_chan->lock); @@ -523,7 +522,7 @@ static enum dma_status td_tx_status(struct dma_chan *chan, dma_cookie_t cookie, dev_dbg(chan2dev(chan), "%s: Entry\n", __func__); - last_complete = td_chan->last_completed_cookie; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c index 6122c364cf11..a917b6723bad 100644 --- a/drivers/dma/txx9dmac.c +++ b/drivers/dma/txx9dmac.c @@ -424,7 +424,7 @@ txx9dmac_descriptor_complete(struct txx9dmac_chan *dc, dev_vdbg(chan2dev(&dc->chan), "descriptor %u %p complete\n", txd->cookie, desc); - dc->completed = txd->cookie; + dc->chan.completed_cookie = txd->cookie; callback = txd->callback; param = txd->callback_param; @@ -976,7 +976,7 @@ txx9dmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie, dma_cookie_t last_complete; int ret; - last_complete = dc->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); @@ -985,7 +985,7 @@ txx9dmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie, txx9dmac_scan_descriptors(dc); spin_unlock_bh(&dc->lock); - last_complete = dc->completed; + last_complete = chan->completed_cookie; last_used = chan->cookie; ret = dma_async_is_complete(cookie, last_complete, last_used); @@ -1057,7 +1057,7 @@ static int txx9dmac_alloc_chan_resources(struct dma_chan *chan) return -EIO; } - dc->completed = chan->cookie = 1; + chan->completed_cookie = chan->cookie = 1; dc->ccr = TXX9_DMA_CCR_IMMCHN | TXX9_DMA_CCR_INTENE | CCR_LE; txx9dmac_chan_set_SMPCHN(dc); @@ -1186,7 +1186,7 @@ static int __init txx9dmac_chan_probe(struct platform_device *pdev) dc->ddev->chan[ch] = dc; dc->chan.device = &dc->dma; list_add_tail(&dc->chan.device_node, &dc->chan.device->channels); - dc->chan.cookie = dc->completed = 1; + dc->chan.cookie = dc->chan.completed_cookie = 1; if (is_dmac64(dc)) dc->ch_regs = &__txx9dmac_regs(dc->ddev)->CHAN[ch]; diff --git a/drivers/dma/txx9dmac.h b/drivers/dma/txx9dmac.h index 365d42366b9f..f5a760598882 100644 --- a/drivers/dma/txx9dmac.h +++ b/drivers/dma/txx9dmac.h @@ -172,7 +172,6 @@ struct txx9dmac_chan { spinlock_t lock; /* these other elements are all protected by lock */ - dma_cookie_t completed; struct list_head active_list; struct list_head queue; struct list_head free_list; diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 2c58853ca423..e64ce2cfee99 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -172,7 +172,6 @@ enum pl08x_dma_chan_state { * @runtime_addr: address for RX/TX according to the runtime config * @runtime_direction: current direction of this channel according to * runtime config - * @lc: last completed transaction on this channel * @pend_list: queued transactions pending on this channel * @at: active transaction on this channel * @lock: a lock for this channel data @@ -197,7 +196,6 @@ struct pl08x_dma_chan { u32 src_cctl; u32 dst_cctl; enum dma_transfer_direction runtime_direction; - dma_cookie_t lc; struct list_head pend_list; struct pl08x_txd *at; spinlock_t lock; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 7e640bf27d2d..c59c4f0c2cc9 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -258,6 +258,7 @@ struct dma_chan_percpu { * struct dma_chan - devices supply DMA channels, clients use them * @device: ptr to the dma device who supplies this channel, always !%NULL * @cookie: last cookie value returned to client + * @completed_cookie: last completed cookie for this channel * @chan_id: channel ID for sysfs * @dev: class device for sysfs * @device_node: used to add this to the device chan list @@ -269,6 +270,7 @@ struct dma_chan_percpu { struct dma_chan { struct dma_device *device; dma_cookie_t cookie; + dma_cookie_t completed_cookie; /* sysfs */ int chan_id; -- cgit From d2ebfb335b0426deb1a4fb14e4e926d81ecd8235 Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Tue, 6 Mar 2012 22:34:26 +0000 Subject: dmaengine: add private header file Add a local private header file to contain definitions and declarations which should only be used by DMA engine drivers. We also fix linux/dmaengine.h to use LINUX_DMAENGINE_H to guard against multiple inclusion. Signed-off-by: Russell King Tested-by: Linus Walleij Reviewed-by: Linus Walleij Acked-by: Jassi Brar [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo Signed-off-by: Vinod Koul --- drivers/dma/amba-pl08x.c | 2 ++ drivers/dma/at_hdmac.c | 1 + drivers/dma/coh901318.c | 1 + drivers/dma/dmaengine.h | 10 ++++++++++ drivers/dma/dw_dmac.c | 1 + drivers/dma/ep93xx_dma.c | 2 ++ drivers/dma/fsldma.c | 1 + drivers/dma/imx-dma.c | 2 ++ drivers/dma/imx-sdma.c | 2 ++ drivers/dma/intel_mid_dma.c | 2 ++ drivers/dma/ioat/dma.c | 2 ++ drivers/dma/ioat/dma_v2.c | 2 ++ drivers/dma/iop-adma.c | 2 ++ drivers/dma/ipu/ipu_idmac.c | 1 + drivers/dma/mpc512x_dma.c | 2 ++ drivers/dma/mv_xor.c | 2 ++ drivers/dma/mxs-dma.c | 2 ++ drivers/dma/pch_dma.c | 2 ++ drivers/dma/pl330.c | 2 ++ drivers/dma/ppc4xx/adma.c | 1 + drivers/dma/shdma.c | 2 ++ drivers/dma/ste_dma40.c | 1 + drivers/dma/timb_dma.c | 2 ++ drivers/dma/txx9dmac.c | 2 ++ include/linux/dmaengine.h | 4 ++-- 25 files changed, 51 insertions(+), 2 deletions(-) create mode 100644 drivers/dma/dmaengine.h (limited to 'include/linux/dmaengine.h') diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index e510447a685a..45f5e66e1c84 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -85,6 +85,8 @@ #include #include +#include "dmaengine.h" + #define DRIVER_NAME "pl08xdmac" static struct amba_driver pl08x_amba_driver; diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 6baf5d717262..ce26ba381144 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -27,6 +27,7 @@ #include #include "at_hdmac_regs.h" +#include "dmaengine.h" /* * Glossary diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index 521434bc3130..fb0d1245ade5 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -24,6 +24,7 @@ #include #include "coh901318_lli.h" +#include "dmaengine.h" #define COHC_2_DEV(cohc) (&cohc->chan.dev->device) diff --git a/drivers/dma/dmaengine.h b/drivers/dma/dmaengine.h new file mode 100644 index 000000000000..968570dde2eb --- /dev/null +++ b/drivers/dma/dmaengine.h @@ -0,0 +1,10 @@ +/* + * The contents of this file are private to DMA engine drivers, and is not + * part of the API to be used by DMA engine users. + */ +#ifndef DMAENGINE_H +#define DMAENGINE_H + +#include + +#endif diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 5bd23006ff4a..b279e1920725 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -23,6 +23,7 @@ #include #include "dw_dmac_regs.h" +#include "dmaengine.h" /* * This supports the Synopsys "DesignWare AHB Central DMA Controller", diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index bc457878cffd..326019832a13 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -28,6 +28,8 @@ #include +#include "dmaengine.h" + /* M2P registers */ #define M2P_CONTROL 0x0000 #define M2P_CONTROL_STALLINT BIT(0) diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index 9b5cb8a43cfa..2ebbe572f9e0 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -35,6 +35,7 @@ #include #include +#include "dmaengine.h" #include "fsldma.h" #define chan_dbg(chan, fmt, arg...) \ diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index d3ddcba87f81..cead5e4bd38c 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -30,6 +30,8 @@ #include #include +#include "dmaengine.h" + struct imxdma_channel { struct imxdma_engine *imxdma; unsigned int channel; diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 49aa4e876645..48a791f93adc 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -43,6 +43,8 @@ #include #include +#include "dmaengine.h" + /* SDMA registers */ #define SDMA_H_C0PTR 0x000 #define SDMA_H_INTR 0x004 diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c index 40e47e6c7ed8..55d0451670b0 100644 --- a/drivers/dma/intel_mid_dma.c +++ b/drivers/dma/intel_mid_dma.c @@ -29,6 +29,8 @@ #include #include +#include "dmaengine.h" + #define MAX_CHAN 4 /*max ch across controllers*/ #include "intel_mid_dma_regs.h" diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index fab440af1f9a..dfe411b2014f 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -40,6 +40,8 @@ #include "registers.h" #include "hw.h" +#include "../dmaengine.h" + int ioat_pending_level = 4; module_param(ioat_pending_level, int, 0644); MODULE_PARM_DESC(ioat_pending_level, diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c index d3f0aff2c02a..6c1e6754d9bd 100644 --- a/drivers/dma/ioat/dma_v2.c +++ b/drivers/dma/ioat/dma_v2.c @@ -41,6 +41,8 @@ #include "registers.h" #include "hw.h" +#include "../dmaengine.h" + int ioat_ring_alloc_order = 8; module_param(ioat_ring_alloc_order, int, 0644); MODULE_PARM_DESC(ioat_ring_alloc_order, diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c index d8027c2b42c0..650bf1e185e8 100644 --- a/drivers/dma/iop-adma.c +++ b/drivers/dma/iop-adma.c @@ -36,6 +36,8 @@ #include +#include "dmaengine.h" + #define to_iop_adma_chan(chan) container_of(chan, struct iop_adma_chan, common) #define to_iop_adma_device(dev) \ container_of(dev, struct iop_adma_device, common) diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c index 9149ade6a5d9..0fcff6508fb1 100644 --- a/drivers/dma/ipu/ipu_idmac.c +++ b/drivers/dma/ipu/ipu_idmac.c @@ -25,6 +25,7 @@ #include +#include "../dmaengine.h" #include "ipu_intern.h" #define FS_VF_IN_VALID 0x00000002 diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c index 39a5cde9f428..c56b3fe5d3fa 100644 --- a/drivers/dma/mpc512x_dma.c +++ b/drivers/dma/mpc512x_dma.c @@ -44,6 +44,8 @@ #include +#include "dmaengine.h" + /* Number of DMA Transfer descriptors allocated per channel */ #define MPC_DMA_DESCRIPTORS 64 diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index c6a84dac112c..ee61778ba8a2 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -26,6 +26,8 @@ #include #include #include + +#include "dmaengine.h" #include "mv_xor.h" static void mv_xor_issue_pending(struct dma_chan *chan); diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index 3696e6e4143a..daa84ee2a187 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -28,6 +28,8 @@ #include #include +#include "dmaengine.h" + /* * NOTE: The term "PIO" throughout the mxs-dma implementation means * PIO mode of mxs apbh-dma and apbx-dma. With this working mode, diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c index 79a71858497c..2b3479d850c9 100644 --- a/drivers/dma/pch_dma.c +++ b/drivers/dma/pch_dma.c @@ -25,6 +25,8 @@ #include #include +#include "dmaengine.h" + #define DRV_NAME "pch-dma" #define DMA_CTL0_DISABLE 0x0 diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 99c31a76e74e..2db70748403f 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -21,6 +21,8 @@ #include #include +#include "dmaengine.h" + #define NR_DEFAULT_DESC 16 enum desc_status { diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index f878322ecbcb..40082ec8326c 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -46,6 +46,7 @@ #include #include #include "adma.h" +#include "../dmaengine.h" enum ppc_adma_init_code { PPC_ADMA_INIT_OK = 0, diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c index ae84c12e3865..c2914330b8fc 100644 --- a/drivers/dma/shdma.c +++ b/drivers/dma/shdma.c @@ -30,6 +30,8 @@ #include #include #include + +#include "dmaengine.h" #include "shdma.h" /* DMA descriptor control */ diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index cfca2a06d1af..156b98f661a3 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -21,6 +21,7 @@ #include +#include "dmaengine.h" #include "ste_dma40_ll.h" #define D40_NAME "dma40" diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c index a1d15598cf7e..4b61879284d1 100644 --- a/drivers/dma/timb_dma.c +++ b/drivers/dma/timb_dma.c @@ -31,6 +31,8 @@ #include +#include "dmaengine.h" + #define DRIVER_NAME "timb-dma" /* Global DMA registers */ diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c index a917b6723bad..db6d809d4d04 100644 --- a/drivers/dma/txx9dmac.c +++ b/drivers/dma/txx9dmac.c @@ -15,6 +15,8 @@ #include #include #include + +#include "dmaengine.h" #include "txx9dmac.h" static struct txx9dmac_chan *to_txx9dmac_chan(struct dma_chan *chan) diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index c59c4f0c2cc9..715babf4bffe 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -18,8 +18,8 @@ * The full GNU General Public License is included in this distribution in the * file called COPYING. */ -#ifndef DMAENGINE_H -#define DMAENGINE_H +#ifndef LINUX_DMAENGINE_H +#define LINUX_DMAENGINE_H #include #include -- cgit From 16052827d98fbc13c31ebad560af4bd53e2b4dd5 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 8 Mar 2012 16:11:18 -0500 Subject: dmaengine/dma_slave: introduce inline wrappers Add inline wrappers for device_prep_slave_sg() and device_prep_dma_cyclic() interfaces to hide new parameter from current users of affected interfaces. Convert current users to use new wrappers instead of direct calls. Suggested by Russell King [https://lkml.org/lkml/2012/2/3/269]. Signed-off-by: Alexandre Bounine Signed-off-by: Vinod Koul --- arch/arm/plat-nomadik/include/plat/ste_dma40.h | 3 +-- arch/arm/plat-samsung/dma-ops.c | 4 ++-- drivers/media/video/mx3_camera.c | 2 +- drivers/media/video/timblogiw.c | 2 +- drivers/mmc/host/atmel-mci.c | 2 +- drivers/mmc/host/mmci.c | 2 +- drivers/mmc/host/mxcmmc.c | 2 +- drivers/mmc/host/mxs-mmc.c | 2 +- drivers/mmc/host/sh_mmcif.c | 4 ++-- drivers/mmc/host/tmio_mmc_dma.c | 4 ++-- drivers/mtd/nand/gpmi-nand/gpmi-lib.c | 25 +++++++++++-------------- drivers/net/ethernet/micrel/ks8842.c | 4 ++-- drivers/spi/spi-dw-mid.c | 4 ++-- drivers/spi/spi-ep93xx.c | 4 ++-- drivers/spi/spi-pl022.c | 4 ++-- drivers/spi/spi-topcliff-pch.c | 4 ++-- drivers/tty/serial/amba-pl011.c | 6 ++---- drivers/tty/serial/pch_uart.c | 4 ++-- drivers/tty/serial/sh-sci.c | 4 ++-- drivers/usb/musb/ux500_dma.c | 3 +-- drivers/usb/renesas_usbhs/fifo.c | 5 ++--- drivers/video/mx3fb.c | 4 ++-- include/linux/dmaengine.h | 16 ++++++++++++++++ sound/soc/ep93xx/ep93xx-pcm.c | 3 +-- sound/soc/imx/imx-pcm-dma-mx2.c | 2 +- sound/soc/mxs/mxs-pcm.c | 2 +- sound/soc/sh/siu_pcm.c | 4 ++-- sound/soc/txx9/txx9aclc.c | 2 +- 28 files changed, 67 insertions(+), 60 deletions(-) (limited to 'include/linux/dmaengine.h') diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h index fd0ee84c45d1..9ff93b065686 100644 --- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h +++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h @@ -200,8 +200,7 @@ dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan, sg.dma_address = addr; sg.length = size; - return chan->device->device_prep_slave_sg(chan, &sg, 1, - direction, flags); + return dmaengine_prep_slave_sg(chan, &sg, 1, direction, flags); } #else diff --git a/arch/arm/plat-samsung/dma-ops.c b/arch/arm/plat-samsung/dma-ops.c index 0747c77a2fd5..a6ef3961134c 100644 --- a/arch/arm/plat-samsung/dma-ops.c +++ b/arch/arm/plat-samsung/dma-ops.c @@ -79,11 +79,11 @@ static int samsung_dmadev_prepare(unsigned ch, info->len, offset_in_page(info->buf)); sg_dma_address(&sg) = info->buf; - desc = chan->device->device_prep_slave_sg(chan, + desc = dmaengine_prep_slave_sg(chan, &sg, 1, info->direction, DMA_PREP_INTERRUPT); break; case DMA_CYCLIC: - desc = chan->device->device_prep_dma_cyclic(chan, + desc = dmaengine_prep_dma_cyclic(chan, info->buf, info->len, info->period, info->direction); break; default: diff --git a/drivers/media/video/mx3_camera.c b/drivers/media/video/mx3_camera.c index 74522773e934..93c35ef5f0ad 100644 --- a/drivers/media/video/mx3_camera.c +++ b/drivers/media/video/mx3_camera.c @@ -286,7 +286,7 @@ static void mx3_videobuf_queue(struct vb2_buffer *vb) sg_dma_address(sg) = vb2_dma_contig_plane_dma_addr(vb, 0); sg_dma_len(sg) = new_size; - txd = ichan->dma_chan.device->device_prep_slave_sg( + txd = dmaengine_prep_slave_sg( &ichan->dma_chan, sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT); if (!txd) diff --git a/drivers/media/video/timblogiw.c b/drivers/media/video/timblogiw.c index 4ed1c7c28ae7..02194c056b00 100644 --- a/drivers/media/video/timblogiw.c +++ b/drivers/media/video/timblogiw.c @@ -564,7 +564,7 @@ static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) spin_unlock_irq(&fh->queue_lock); - desc = fh->chan->device->device_prep_slave_sg(fh->chan, + desc = dmaengine_prep_slave_sg(fh->chan, buf->sg, sg_elems, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_SRC_UNMAP); if (!desc) { diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index 3ba865ddebc4..492854b09d89 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -875,7 +875,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) data->sg_len, direction); dmaengine_slave_config(chan, &host->dma_conf); - desc = chan->device->device_prep_slave_sg(chan, + desc = dmaengine_prep_slave_sg(chan, data->sg, sglen, slave_dirn, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index a09c06ba046c..c55f9663eb13 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -413,7 +413,7 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, return -EINVAL; dmaengine_slave_config(chan, &conf); - desc = device->device_prep_slave_sg(chan, data->sg, nr_sg, + desc = dmaengine_prep_slave_sg(chan, data->sg, nr_sg, conf.direction, DMA_CTRL_ACK); if (!desc) goto unmap_exit; diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 68b69a91e5ef..b2058b432320 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -255,7 +255,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) if (nents != data->sg_len) return -EINVAL; - host->desc = host->dma->device->device_prep_slave_sg(host->dma, + host->desc = dmaengine_prep_slave_sg(host->dma, data->sg, data->sg_len, slave_dirn, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 382c835d217c..65f36cf2ff33 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -324,7 +324,7 @@ static struct dma_async_tx_descriptor *mxs_mmc_prep_dma( sg_len = SSP_PIO_NUM; } - desc = host->dmach->device->device_prep_slave_sg(host->dmach, + desc = dmaengine_prep_slave_sg(host->dmach, sgl, sg_len, host->slave_dirn, append); if (desc) { desc->callback = mxs_mmc_dma_irq_callback; diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index f5d8b53be333..3d00f1aab87d 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -285,7 +285,7 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) DMA_FROM_DEVICE); if (ret > 0) { host->dma_active = true; - desc = chan->device->device_prep_slave_sg(chan, sg, ret, + desc = dmaengine_prep_slave_sg(chan, sg, ret, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); } @@ -334,7 +334,7 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host) DMA_TO_DEVICE); if (ret > 0) { host->dma_active = true; - desc = chan->device->device_prep_slave_sg(chan, sg, ret, + desc = dmaengine_prep_slave_sg(chan, sg, ret, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); } diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c index 7a6e6cc8f8b8..def9c54f73f5 100644 --- a/drivers/mmc/host/tmio_mmc_dma.c +++ b/drivers/mmc/host/tmio_mmc_dma.c @@ -76,7 +76,7 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host) ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE); if (ret > 0) - desc = chan->device->device_prep_slave_sg(chan, sg, ret, + desc = dmaengine_prep_slave_sg(chan, sg, ret, DMA_DEV_TO_MEM, DMA_CTRL_ACK); if (desc) { @@ -157,7 +157,7 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host) ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE); if (ret > 0) - desc = chan->device->device_prep_slave_sg(chan, sg, ret, + desc = dmaengine_prep_slave_sg(chan, sg, ret, DMA_MEM_TO_DEV, DMA_CTRL_ACK); if (desc) { diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c index 7f680420bfab..2a200ba0bd1a 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-lib.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-lib.c @@ -825,7 +825,7 @@ int gpmi_send_command(struct gpmi_nand_data *this) | BM_GPMI_CTRL0_ADDRESS_INCREMENT | BF_GPMI_CTRL0_XFER_COUNT(this->command_length); pio[1] = pio[2] = 0; - desc = channel->device->device_prep_slave_sg(channel, + desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio, ARRAY_SIZE(pio), DMA_TRANS_NONE, 0); if (!desc) { @@ -838,8 +838,7 @@ int gpmi_send_command(struct gpmi_nand_data *this) sg_init_one(sgl, this->cmd_buffer, this->command_length); dma_map_sg(this->dev, sgl, 1, DMA_TO_DEVICE); - desc = channel->device->device_prep_slave_sg(channel, - sgl, 1, DMA_MEM_TO_DEV, 1); + desc = dmaengine_prep_slave_sg(channel, sgl, 1, DMA_MEM_TO_DEV, 1); if (!desc) { pr_err("step 2 error\n"); return -1; @@ -870,8 +869,7 @@ int gpmi_send_data(struct gpmi_nand_data *this) | BF_GPMI_CTRL0_ADDRESS(address) | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len); pio[1] = 0; - desc = channel->device->device_prep_slave_sg(channel, - (struct scatterlist *)pio, + desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio, ARRAY_SIZE(pio), DMA_TRANS_NONE, 0); if (!desc) { pr_err("step 1 error\n"); @@ -880,7 +878,7 @@ int gpmi_send_data(struct gpmi_nand_data *this) /* [2] send DMA request */ prepare_data_dma(this, DMA_TO_DEVICE); - desc = channel->device->device_prep_slave_sg(channel, &this->data_sgl, + desc = dmaengine_prep_slave_sg(channel, &this->data_sgl, 1, DMA_MEM_TO_DEV, 1); if (!desc) { pr_err("step 2 error\n"); @@ -906,7 +904,7 @@ int gpmi_read_data(struct gpmi_nand_data *this) | BF_GPMI_CTRL0_ADDRESS(BV_GPMI_CTRL0_ADDRESS__NAND_DATA) | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len); pio[1] = 0; - desc = channel->device->device_prep_slave_sg(channel, + desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio, ARRAY_SIZE(pio), DMA_TRANS_NONE, 0); if (!desc) { @@ -916,8 +914,8 @@ int gpmi_read_data(struct gpmi_nand_data *this) /* [2] : send DMA request */ prepare_data_dma(this, DMA_FROM_DEVICE); - desc = channel->device->device_prep_slave_sg(channel, &this->data_sgl, - 1, DMA_DEV_TO_MEM, 1); + desc = dmaengine_prep_slave_sg(channel, &this->data_sgl, + 1, DMA_DEV_TO_MEM, 1); if (!desc) { pr_err("step 2 error\n"); return -1; @@ -962,8 +960,7 @@ int gpmi_send_page(struct gpmi_nand_data *this, pio[4] = payload; pio[5] = auxiliary; - desc = channel->device->device_prep_slave_sg(channel, - (struct scatterlist *)pio, + desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio, ARRAY_SIZE(pio), DMA_TRANS_NONE, 0); if (!desc) { pr_err("step 2 error\n"); @@ -997,7 +994,7 @@ int gpmi_read_page(struct gpmi_nand_data *this, | BF_GPMI_CTRL0_ADDRESS(address) | BF_GPMI_CTRL0_XFER_COUNT(0); pio[1] = 0; - desc = channel->device->device_prep_slave_sg(channel, + desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio, 2, DMA_TRANS_NONE, 0); if (!desc) { @@ -1026,7 +1023,7 @@ int gpmi_read_page(struct gpmi_nand_data *this, pio[3] = geo->page_size; pio[4] = payload; pio[5] = auxiliary; - desc = channel->device->device_prep_slave_sg(channel, + desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio, ARRAY_SIZE(pio), DMA_TRANS_NONE, 1); if (!desc) { @@ -1045,7 +1042,7 @@ int gpmi_read_page(struct gpmi_nand_data *this, | BF_GPMI_CTRL0_ADDRESS(address) | BF_GPMI_CTRL0_XFER_COUNT(geo->page_size); pio[1] = 0; - desc = channel->device->device_prep_slave_sg(channel, + desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio, 2, DMA_TRANS_NONE, 1); if (!desc) { diff --git a/drivers/net/ethernet/micrel/ks8842.c b/drivers/net/ethernet/micrel/ks8842.c index 0a85690a1321..554fef3f0130 100644 --- a/drivers/net/ethernet/micrel/ks8842.c +++ b/drivers/net/ethernet/micrel/ks8842.c @@ -458,7 +458,7 @@ static int ks8842_tx_frame_dma(struct sk_buff *skb, struct net_device *netdev) if (sg_dma_len(&ctl->sg) % 4) sg_dma_len(&ctl->sg) += 4 - sg_dma_len(&ctl->sg) % 4; - ctl->adesc = ctl->chan->device->device_prep_slave_sg(ctl->chan, + ctl->adesc = dmaengine_prep_slave_sg(ctl->chan, &ctl->sg, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_SRC_UNMAP); if (!ctl->adesc) @@ -570,7 +570,7 @@ static int __ks8842_start_new_rx_dma(struct net_device *netdev) sg_dma_len(sg) = DMA_BUFFER_SIZE; - ctl->adesc = ctl->chan->device->device_prep_slave_sg(ctl->chan, + ctl->adesc = dmaengine_prep_slave_sg(ctl->chan, sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_SRC_UNMAP); diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c index 04d6c1b31383..b9f0192758d6 100644 --- a/drivers/spi/spi-dw-mid.c +++ b/drivers/spi/spi-dw-mid.c @@ -146,7 +146,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) dws->tx_sgl.dma_address = dws->tx_dma; dws->tx_sgl.length = dws->len; - txdesc = txchan->device->device_prep_slave_sg(txchan, + txdesc = dmaengine_prep_slave_sg(txchan, &dws->tx_sgl, 1, DMA_MEM_TO_DEV, @@ -169,7 +169,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) dws->rx_sgl.dma_address = dws->rx_dma; dws->rx_sgl.length = dws->len; - rxdesc = rxchan->device->device_prep_slave_sg(rxchan, + rxdesc = dmaengine_prep_slave_sg(rxchan, &dws->rx_sgl, 1, DMA_DEV_TO_MEM, diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index d46e55c720b7..6db2887852d6 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -633,8 +633,8 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir) if (!nents) return ERR_PTR(-ENOMEM); - txd = chan->device->device_prep_slave_sg(chan, sgt->sgl, nents, - slave_dirn, DMA_CTRL_ACK); + txd = dmaengine_prep_slave_sg(chan, sgt->sgl, nents, + slave_dirn, DMA_CTRL_ACK); if (!txd) { dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir); return ERR_PTR(-ENOMEM); diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 1dc667f8a305..a209f3b7b05b 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -1040,7 +1040,7 @@ static int configure_dma(struct pl022 *pl022) goto err_tx_sgmap; /* Send both scatterlists */ - rxdesc = rxchan->device->device_prep_slave_sg(rxchan, + rxdesc = dmaengine_prep_slave_sg(rxchan, pl022->sgt_rx.sgl, rx_sglen, DMA_DEV_TO_MEM, @@ -1048,7 +1048,7 @@ static int configure_dma(struct pl022 *pl022) if (!rxdesc) goto err_rxdesc; - txdesc = txchan->device->device_prep_slave_sg(txchan, + txdesc = dmaengine_prep_slave_sg(txchan, pl022->sgt_tx.sgl, tx_sglen, DMA_MEM_TO_DEV, diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index 2a6429d8c363..ea4c8d57667a 100644 --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -1078,7 +1078,7 @@ static void pch_spi_handle_dma(struct pch_spi_data *data, int *bpw) sg_dma_address(sg) = dma->rx_buf_dma + sg->offset; } sg = dma->sg_rx_p; - desc_rx = dma->chan_rx->device->device_prep_slave_sg(dma->chan_rx, sg, + desc_rx = dmaengine_prep_slave_sg(dma->chan_rx, sg, num, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc_rx) { @@ -1123,7 +1123,7 @@ static void pch_spi_handle_dma(struct pch_spi_data *data, int *bpw) sg_dma_address(sg) = dma->tx_buf_dma + sg->offset; } sg = dma->sg_tx_p; - desc_tx = dma->chan_tx->device->device_prep_slave_sg(dma->chan_tx, + desc_tx = dmaengine_prep_slave_sg(dma->chan_tx, sg, num, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc_tx) { diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index db7f88a1bdee..f9dcb5379b92 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -483,7 +483,7 @@ static int pl011_dma_tx_refill(struct uart_amba_port *uap) return -EBUSY; } - desc = dma_dev->device_prep_slave_sg(chan, &dmatx->sg, 1, DMA_MEM_TO_DEV, + desc = dmaengine_prep_slave_sg(chan, &dmatx->sg, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { dma_unmap_sg(dma_dev->dev, &dmatx->sg, 1, DMA_TO_DEVICE); @@ -666,7 +666,6 @@ static void pl011_dma_rx_callback(void *data); static int pl011_dma_rx_trigger_dma(struct uart_amba_port *uap) { struct dma_chan *rxchan = uap->dmarx.chan; - struct dma_device *dma_dev; struct pl011_dmarx_data *dmarx = &uap->dmarx; struct dma_async_tx_descriptor *desc; struct pl011_sgbuf *sgbuf; @@ -677,8 +676,7 @@ static int pl011_dma_rx_trigger_dma(struct uart_amba_port *uap) /* Start the RX DMA job */ sgbuf = uap->dmarx.use_buf_b ? &uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a; - dma_dev = rxchan->device; - desc = rxchan->device->device_prep_slave_sg(rxchan, &sgbuf->sg, 1, + desc = dmaengine_prep_slave_sg(rxchan, &sgbuf->sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); /* diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 17ae65762d1a..61743bdc439b 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -763,7 +763,7 @@ static int dma_handle_rx(struct eg20t_port *priv) sg_dma_address(sg) = priv->rx_buf_dma; - desc = priv->chan_rx->device->device_prep_slave_sg(priv->chan_rx, + desc = dmaengine_prep_slave_sg(priv->chan_rx, sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); @@ -922,7 +922,7 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv) sg_dma_len(sg) = size; } - desc = priv->chan_tx->device->device_prep_slave_sg(priv->chan_tx, + desc = dmaengine_prep_slave_sg(priv->chan_tx, priv->sg_tx_p, nent, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 75085795528e..872557f89cca 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1338,7 +1338,7 @@ static void sci_submit_rx(struct sci_port *s) struct scatterlist *sg = &s->sg_rx[i]; struct dma_async_tx_descriptor *desc; - desc = chan->device->device_prep_slave_sg(chan, + desc = dmaengine_prep_slave_sg(chan, sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT); if (desc) { @@ -1453,7 +1453,7 @@ static void work_fn_tx(struct work_struct *work) BUG_ON(!sg_dma_len(sg)); - desc = chan->device->device_prep_slave_sg(chan, + desc = dmaengine_prep_slave_sg(chan, sg, s->sg_len_tx, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index 2a36bf37d7aa..d05c7fbbb703 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -120,8 +120,7 @@ static bool ux500_configure_channel(struct dma_channel *channel, dma_chan->device->device_control(dma_chan, DMA_SLAVE_CONFIG, (unsigned long) &slave_conf); - dma_desc = dma_chan->device-> - device_prep_slave_sg(dma_chan, &sg, 1, direction, + dma_desc = dmaengine_prep_slave_sg(dma_chan, &sg, 1, direction, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!dma_desc) return false; diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 72339bd6fcab..7b4309339f3d 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -783,9 +783,8 @@ static void usbhsf_dma_prepare_tasklet(unsigned long data) sg_dma_address(&sg) = pkt->dma + pkt->actual; sg_dma_len(&sg) = pkt->trans; - desc = chan->device->device_prep_slave_sg(chan, &sg, 1, dir, - DMA_PREP_INTERRUPT | - DMA_CTRL_ACK); + desc = dmaengine_prep_slave_sg(chan, &sg, 1, dir, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) return; diff --git a/drivers/video/mx3fb.c b/drivers/video/mx3fb.c index 727a5149d818..eec0d7b748eb 100644 --- a/drivers/video/mx3fb.c +++ b/drivers/video/mx3fb.c @@ -337,7 +337,7 @@ static void sdc_enable_channel(struct mx3fb_info *mx3_fbi) /* This enables the channel */ if (mx3_fbi->cookie < 0) { - mx3_fbi->txd = dma_chan->device->device_prep_slave_sg(dma_chan, + mx3_fbi->txd = dmaengine_prep_slave_sg(dma_chan, &mx3_fbi->sg[0], 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT); if (!mx3_fbi->txd) { dev_err(mx3fb->dev, "Cannot allocate descriptor on %d\n", @@ -1091,7 +1091,7 @@ static int mx3fb_pan_display(struct fb_var_screeninfo *var, if (mx3_fbi->txd) async_tx_ack(mx3_fbi->txd); - txd = dma_chan->device->device_prep_slave_sg(dma_chan, sg + + txd = dmaengine_prep_slave_sg(dma_chan, sg + mx3_fbi->cur_ipu_buf, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT); if (!txd) { dev_err(fbi->device, diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 715babf4bffe..03d68b7e5705 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -622,6 +622,22 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags); } +static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_sg( + struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, + enum dma_transfer_direction dir, unsigned long flags) +{ + return chan->device->device_prep_slave_sg(chan, sgl, sg_len, + dir, flags); +} + +static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic( + struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len, + size_t period_len, enum dma_transfer_direction dir) +{ + return chan->device->device_prep_dma_cyclic(chan, buf_addr, buf_len, + period_len, dir); +} + static inline int dmaengine_terminate_all(struct dma_chan *chan) { return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0); diff --git a/sound/soc/ep93xx/ep93xx-pcm.c b/sound/soc/ep93xx/ep93xx-pcm.c index de8390449873..50593e50ad57 100644 --- a/sound/soc/ep93xx/ep93xx-pcm.c +++ b/sound/soc/ep93xx/ep93xx-pcm.c @@ -142,11 +142,10 @@ static int ep93xx_pcm_dma_submit(struct snd_pcm_substream *substream) struct snd_pcm_runtime *runtime = substream->runtime; struct ep93xx_runtime_data *rtd = runtime->private_data; struct dma_chan *chan = rtd->dma_chan; - struct dma_device *dma_dev = chan->device; struct dma_async_tx_descriptor *desc; rtd->pointer_bytes = 0; - desc = dma_dev->device_prep_dma_cyclic(chan, runtime->dma_addr, + desc = dmaengine_prep_dma_cyclic(chan, runtime->dma_addr, rtd->period_bytes * rtd->periods, rtd->period_bytes, rtd->dma_data.direction); diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c index 52b0dedbf996..af46b4e2b438 100644 --- a/sound/soc/imx/imx-pcm-dma-mx2.c +++ b/sound/soc/imx/imx-pcm-dma-mx2.c @@ -160,7 +160,7 @@ static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream, iprtd->buf = (unsigned int *)substream->dma_buffer.area; - iprtd->desc = chan->device->device_prep_dma_cyclic(chan, dma_addr, + iprtd->desc = dmaengine_prep_dma_cyclic(chan, dma_addr, iprtd->period_bytes * iprtd->periods, iprtd->period_bytes, substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? diff --git a/sound/soc/mxs/mxs-pcm.c b/sound/soc/mxs/mxs-pcm.c index 105f42a394df..661b678d08a8 100644 --- a/sound/soc/mxs/mxs-pcm.c +++ b/sound/soc/mxs/mxs-pcm.c @@ -132,7 +132,7 @@ static int snd_mxs_pcm_hw_params(struct snd_pcm_substream *substream, iprtd->buf = substream->dma_buffer.area; - iprtd->desc = chan->device->device_prep_dma_cyclic(chan, dma_addr, + iprtd->desc = dmaengine_prep_dma_cyclic(chan, dma_addr, iprtd->period_bytes * iprtd->periods, iprtd->period_bytes, substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? diff --git a/sound/soc/sh/siu_pcm.c b/sound/soc/sh/siu_pcm.c index 0193e595d415..5cfcc655e95f 100644 --- a/sound/soc/sh/siu_pcm.c +++ b/sound/soc/sh/siu_pcm.c @@ -130,7 +130,7 @@ static int siu_pcm_wr_set(struct siu_port *port_info, sg_dma_len(&sg) = size; sg_dma_address(&sg) = buff; - desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan, + desc = dmaengine_prep_slave_sg(siu_stream->chan, &sg, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { dev_err(dev, "Failed to allocate a dma descriptor\n"); @@ -180,7 +180,7 @@ static int siu_pcm_rd_set(struct siu_port *port_info, sg_dma_len(&sg) = size; sg_dma_address(&sg) = buff; - desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan, + desc = dmaengine_prep_slave_sg(siu_stream->chan, &sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { dev_err(dev, "Failed to allocate dma descriptor\n"); diff --git a/sound/soc/txx9/txx9aclc.c b/sound/soc/txx9/txx9aclc.c index 21554611557c..b609d2c64c55 100644 --- a/sound/soc/txx9/txx9aclc.c +++ b/sound/soc/txx9/txx9aclc.c @@ -132,7 +132,7 @@ txx9aclc_dma_submit(struct txx9aclc_dmadata *dmadata, dma_addr_t buf_dma_addr) sg_set_page(&sg, pfn_to_page(PFN_DOWN(buf_dma_addr)), dmadata->frag_bytes, buf_dma_addr & (PAGE_SIZE - 1)); sg_dma_address(&sg) = buf_dma_addr; - desc = chan->device->device_prep_slave_sg(chan, &sg, 1, + desc = dmaengine_prep_slave_sg(chan, &sg, 1, dmadata->substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); -- cgit From 185ecb5f4fd43911c35956d4cc7d94a1da30417f Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 8 Mar 2012 15:35:13 -0500 Subject: dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic Add context parameter to device_prep_slave_sg() and device_prep_dma_cyclic() interfaces to allow passing client/target specific information associated with the data transfer. Modify all affected DMA engine drivers. Signed-off-by: Alexandre Bounine Acked-by: Linus Walleij Acked-by: Felipe Balbi Signed-off-by: Vinod Koul --- drivers/dma/amba-pl08x.c | 2 +- drivers/dma/at_hdmac.c | 7 +++++-- drivers/dma/coh901318.c | 2 +- drivers/dma/dw_dmac.c | 2 +- drivers/dma/ep93xx_dma.c | 6 ++++-- drivers/dma/fsldma.c | 4 +++- drivers/dma/imx-dma.c | 5 +++-- drivers/dma/imx-sdma.c | 5 +++-- drivers/dma/intel_mid_dma.c | 3 ++- drivers/dma/ipu/ipu_idmac.c | 3 ++- drivers/dma/mxs-dma.c | 5 +++-- drivers/dma/pch_dma.c | 3 ++- drivers/dma/pl330.c | 5 +++-- drivers/dma/shdma.c | 3 ++- drivers/dma/sirf-dma.c | 2 +- drivers/dma/ste_dma40.c | 5 +++-- drivers/dma/timb_dma.c | 3 ++- drivers/dma/txx9dmac.c | 2 +- include/linux/dmaengine.h | 12 +++++++----- 19 files changed, 49 insertions(+), 30 deletions(-) (limited to 'include/linux/dmaengine.h') diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 1b53f2605250..c301a8ec31aa 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1313,7 +1313,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy( static struct dma_async_tx_descriptor *pl08x_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct pl08x_dma_chan *plchan = to_pl08x_chan(chan); struct pl08x_driver_data *pl08x = plchan->host; diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 5d225ddc7698..f24b16e455fd 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -639,11 +639,12 @@ err_desc_get: * @sg_len: number of entries in @scatterlist * @direction: DMA direction * @flags: tx descriptor status flags + * @context: transaction context (ignored) */ static struct dma_async_tx_descriptor * atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct at_dma_chan *atchan = to_at_dma_chan(chan); struct at_dma_slave *atslave = chan->private; @@ -840,10 +841,12 @@ atc_dma_cyclic_fill_desc(struct at_dma_slave *atslave, struct at_desc *desc, * @buf_len: total number of bytes for the entire buffer * @period_len: number of bytes for each period * @direction: transfer direction, to or from device + * @context: transfer context (ignored) */ static struct dma_async_tx_descriptor * atc_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len, - size_t period_len, enum dma_transfer_direction direction) + size_t period_len, enum dma_transfer_direction direction, + void *context) { struct at_dma_chan *atchan = to_at_dma_chan(chan); struct at_dma_slave *atslave = chan->private; diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index 187bb9eef4a2..dc89455f5550 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -1021,7 +1021,7 @@ coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, static struct dma_async_tx_descriptor * coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct coh901318_chan *cohc = to_coh901318_chan(chan); struct coh901318_lli *lli; diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index cb173bbdcfdf..7439079f5eed 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -704,7 +704,7 @@ err_desc_get: static struct dma_async_tx_descriptor * dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct dw_dma_chan *dwc = to_dw_dma_chan(chan); struct dw_dma_slave *dws = chan->private; diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index f25e83bf5678..e6f133b78dc2 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -975,13 +975,14 @@ fail: * @sg_len: number of entries in @sgl * @dir: direction of tha DMA transfer * @flags: flags for the descriptor + * @context: operation context (ignored) * * Returns a valid DMA descriptor or %NULL in case of failure. */ static struct dma_async_tx_descriptor * ep93xx_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction dir, - unsigned long flags) + unsigned long flags, void *context) { struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan); struct ep93xx_dma_desc *desc, *first; @@ -1048,6 +1049,7 @@ fail: * @buf_len: length of the buffer (in bytes) * @period_len: lenght of a single period * @dir: direction of the operation + * @context: operation context (ignored) * * Prepares a descriptor for cyclic DMA operation. This means that once the * descriptor is submitted, we will be submitting in a @period_len sized @@ -1060,7 +1062,7 @@ fail: static struct dma_async_tx_descriptor * ep93xx_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, size_t period_len, - enum dma_transfer_direction dir) + enum dma_transfer_direction dir, void *context) { struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan); struct ep93xx_dma_desc *desc, *first; diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index 7d7384b34621..8f84761f98ba 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -759,6 +759,7 @@ fail: * @sg_len: number of entries in @scatterlist * @direction: DMA direction * @flags: DMAEngine flags + * @context: transaction context (ignored) * * Prepare a set of descriptors for a DMA_SLAVE transaction. Following the * DMA_SLAVE API, this gets the device-specific information from the @@ -766,7 +767,8 @@ fail: */ static struct dma_async_tx_descriptor *fsl_dma_prep_slave_sg( struct dma_chan *dchan, struct scatterlist *sgl, unsigned int sg_len, - enum dma_transfer_direction direction, unsigned long flags) + enum dma_transfer_direction direction, unsigned long flags, + void *context) { /* * This operation is not supported on the Freescale DMA controller diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 20c1565a7486..304839a99ae5 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -354,7 +354,7 @@ static void imxdma_free_chan_resources(struct dma_chan *chan) static struct dma_async_tx_descriptor *imxdma_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct imxdma_channel *imxdmac = to_imxdma_chan(chan); struct scatterlist *sg; @@ -405,7 +405,8 @@ static struct dma_async_tx_descriptor *imxdma_prep_slave_sg( static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic( struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, - size_t period_len, enum dma_transfer_direction direction) + size_t period_len, enum dma_transfer_direction direction, + void *context) { struct imxdma_channel *imxdmac = to_imxdma_chan(chan); struct imxdma_engine *imxdma = imxdmac->imxdma; diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index f8259ee49f86..434fb610aa1a 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -903,7 +903,7 @@ static void sdma_free_chan_resources(struct dma_chan *chan) static struct dma_async_tx_descriptor *sdma_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct sdma_channel *sdmac = to_sdma_chan(chan); struct sdma_engine *sdma = sdmac->sdma; @@ -1001,7 +1001,8 @@ err_out: static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic( struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, - size_t period_len, enum dma_transfer_direction direction) + size_t period_len, enum dma_transfer_direction direction, + void *context) { struct sdma_channel *sdmac = to_sdma_chan(chan); struct sdma_engine *sdma = sdmac->sdma; diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c index 2449812f5464..c900ca7aaec4 100644 --- a/drivers/dma/intel_mid_dma.c +++ b/drivers/dma/intel_mid_dma.c @@ -714,13 +714,14 @@ err_desc_get: * @sg_len: length of sg txn * @direction: DMA transfer dirtn * @flags: DMA flags + * @context: transfer context (ignored) * * Prepares LLI based periphral transfer */ static struct dma_async_tx_descriptor *intel_mid_dma_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct intel_mid_dma_chan *midc = NULL; struct intel_mid_dma_slave *mids = NULL; diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c index 1880274b0850..62e3f8ec2461 100644 --- a/drivers/dma/ipu/ipu_idmac.c +++ b/drivers/dma/ipu/ipu_idmac.c @@ -1335,7 +1335,8 @@ static void ipu_gc_tasklet(unsigned long arg) /* Allocate and initialise a transfer descriptor. */ static struct dma_async_tx_descriptor *idmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, - enum dma_transfer_direction direction, unsigned long tx_flags) + enum dma_transfer_direction direction, unsigned long tx_flags, + void *context) { struct idmac_channel *ichan = to_idmac_chan(chan); struct idmac_tx_desc *desc = NULL; diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index a2267f9ab568..65334c49b71e 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -340,7 +340,7 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan) static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long append) + unsigned long append, void *context) { struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan); struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma; @@ -435,7 +435,8 @@ err_out: static struct dma_async_tx_descriptor *mxs_dma_prep_dma_cyclic( struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, - size_t period_len, enum dma_transfer_direction direction) + size_t period_len, enum dma_transfer_direction direction, + void *context) { struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan); struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma; diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c index c93bb0459972..65c0495a6d40 100644 --- a/drivers/dma/pch_dma.c +++ b/drivers/dma/pch_dma.c @@ -587,7 +587,8 @@ static void pd_issue_pending(struct dma_chan *chan) static struct dma_async_tx_descriptor *pd_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, - enum dma_transfer_direction direction, unsigned long flags) + enum dma_transfer_direction direction, unsigned long flags, + void *context) { struct pch_dma_chan *pd_chan = to_pd_chan(chan); struct pch_dma_slave *pd_slave = chan->private; diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index e863d7fc465a..87d752a77f5e 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2685,7 +2685,8 @@ static inline int get_burst_len(struct dma_pl330_desc *desc, size_t len) static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic( struct dma_chan *chan, dma_addr_t dma_addr, size_t len, - size_t period_len, enum dma_transfer_direction direction) + size_t period_len, enum dma_transfer_direction direction, + void *context) { struct dma_pl330_desc *desc; struct dma_pl330_chan *pch = to_pchan(chan); @@ -2775,7 +2776,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, static struct dma_async_tx_descriptor * pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flg) + unsigned long flg, void *context) { struct dma_pl330_desc *first, *desc = NULL; struct dma_pl330_chan *pch = to_pchan(chan); diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c index 5c4088603dd4..19d7a8d3975d 100644 --- a/drivers/dma/shdma.c +++ b/drivers/dma/shdma.c @@ -669,7 +669,8 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_memcpy( static struct dma_async_tx_descriptor *sh_dmae_prep_slave_sg( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, - enum dma_transfer_direction direction, unsigned long flags) + enum dma_transfer_direction direction, unsigned long flags, + void *context) { struct sh_dmae_slave *param; struct sh_dmae_chan *sh_chan; diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c index 45ba352fb871..434ad31174f2 100644 --- a/drivers/dma/sirf-dma.c +++ b/drivers/dma/sirf-dma.c @@ -489,7 +489,7 @@ err_dir: static struct dma_async_tx_descriptor * sirfsoc_dma_prep_cyclic(struct dma_chan *chan, dma_addr_t addr, size_t buf_len, size_t period_len, - enum dma_transfer_direction direction) + enum dma_transfer_direction direction, void *context) { struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan); struct sirfsoc_dma_desc *sdesc = NULL; diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 1ea6d02d08ab..bdd41d4bfa8d 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -2289,7 +2289,8 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long dma_flags) + unsigned long dma_flags, + void *context) { if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV) return NULL; @@ -2300,7 +2301,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, static struct dma_async_tx_descriptor * dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len, size_t period_len, - enum dma_transfer_direction direction) + enum dma_transfer_direction direction, void *context) { unsigned int periods = buf_len / period_len; struct dma_async_tx_descriptor *txd; diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c index d408c2206023..4e0dff59901d 100644 --- a/drivers/dma/timb_dma.c +++ b/drivers/dma/timb_dma.c @@ -542,7 +542,8 @@ static void td_issue_pending(struct dma_chan *chan) static struct dma_async_tx_descriptor *td_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, - enum dma_transfer_direction direction, unsigned long flags) + enum dma_transfer_direction direction, unsigned long flags, + void *context) { struct timb_dma_chan *td_chan = container_of(chan, struct timb_dma_chan, chan); diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c index 40440f946385..913f55c76c99 100644 --- a/drivers/dma/txx9dmac.c +++ b/drivers/dma/txx9dmac.c @@ -833,7 +833,7 @@ txx9dmac_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, static struct dma_async_tx_descriptor * txx9dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags) + unsigned long flags, void *context) { struct txx9dmac_chan *dc = to_txx9dmac_chan(chan); struct txx9dmac_dev *ddev = dc->ddev; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 03d68b7e5705..b3b5b38776f0 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -582,10 +582,11 @@ struct dma_device { struct dma_async_tx_descriptor *(*device_prep_slave_sg)( struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, enum dma_transfer_direction direction, - unsigned long flags); + unsigned long flags, void *context); struct dma_async_tx_descriptor *(*device_prep_dma_cyclic)( struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len, - size_t period_len, enum dma_transfer_direction direction); + size_t period_len, enum dma_transfer_direction direction, + void *context); struct dma_async_tx_descriptor *(*device_prep_interleaved_dma)( struct dma_chan *chan, struct dma_interleaved_template *xt, unsigned long flags); @@ -619,7 +620,8 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( struct scatterlist sg; sg_init_one(&sg, buf, len); - return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags); + return chan->device->device_prep_slave_sg(chan, &sg, 1, + dir, flags, NULL); } static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_sg( @@ -627,7 +629,7 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_sg( enum dma_transfer_direction dir, unsigned long flags) { return chan->device->device_prep_slave_sg(chan, sgl, sg_len, - dir, flags); + dir, flags, NULL); } static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic( @@ -635,7 +637,7 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic( size_t period_len, enum dma_transfer_direction dir) { return chan->device->device_prep_dma_cyclic(chan, buf_addr, buf_len, - period_len, dir); + period_len, dir, NULL); } static inline int dmaengine_terminate_all(struct dma_chan *chan) -- cgit From a2bd1140a264b561e38d99e656cd843c2d840e86 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Wed, 4 Apr 2012 16:10:46 -0700 Subject: netdma: adding alignment check for NETDMA ops This is the fallout from adding memcpy alignment workaround for certain IOATDMA hardware. NetDMA will only use DMA engine that can handle byte align ops. Acked-by: David S. Miller Signed-off-by: Dave Jiang Signed-off-by: Dan Williams --- drivers/dma/dmaengine.c | 14 ++++++++++++++ include/linux/dmaengine.h | 1 + net/ipv4/tcp.c | 4 ++-- net/ipv4/tcp_input.c | 2 +- net/ipv4/tcp_ipv4.c | 2 +- net/ipv6/tcp_ipv6.c | 2 +- 6 files changed, 20 insertions(+), 5 deletions(-) (limited to 'include/linux/dmaengine.h') diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index a6c6051ec858..0f1ca74fe0bb 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -332,6 +332,20 @@ struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type) } EXPORT_SYMBOL(dma_find_channel); +/* + * net_dma_find_channel - find a channel for net_dma + * net_dma has alignment requirements + */ +struct dma_chan *net_dma_find_channel(void) +{ + struct dma_chan *chan = dma_find_channel(DMA_MEMCPY); + if (chan && !is_dma_copy_aligned(chan->device, 1, 1, 1)) + return NULL; + + return chan; +} +EXPORT_SYMBOL(net_dma_find_channel); + /** * dma_issue_pending_all - flush all pending operations across all channels */ diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 679b349d9b66..a5bb3ad5c7a5 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -948,6 +948,7 @@ int dma_async_device_register(struct dma_device *device); void dma_async_device_unregister(struct dma_device *device); void dma_run_dependencies(struct dma_async_tx_descriptor *tx); struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type); +struct dma_chan *net_dma_find_channel(void); #define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y) /* --- Helper iov-locking functions --- */ diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 22ef5f9fd2ff..8712c5d4f91d 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1450,7 +1450,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, if ((available < target) && (len > sysctl_tcp_dma_copybreak) && !(flags & MSG_PEEK) && !sysctl_tcp_low_latency && - dma_find_channel(DMA_MEMCPY)) { + net_dma_find_channel()) { preempt_enable_no_resched(); tp->ucopy.pinned_list = dma_pin_iovec_pages(msg->msg_iov, len); @@ -1665,7 +1665,7 @@ do_prequeue: if (!(flags & MSG_TRUNC)) { #ifdef CONFIG_NET_DMA if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list) - tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY); + tp->ucopy.dma_chan = net_dma_find_channel(); if (tp->ucopy.dma_chan) { tp->ucopy.dma_cookie = dma_skb_copy_datagram_iovec( diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index b5e315f13641..27c676dfea33 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5190,7 +5190,7 @@ static int tcp_dma_try_early_copy(struct sock *sk, struct sk_buff *skb, return 0; if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list) - tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY); + tp->ucopy.dma_chan = net_dma_find_channel(); if (tp->ucopy.dma_chan && skb_csum_unnecessary(skb)) { diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index fd54c5f8a255..3810b6fe0a1e 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1727,7 +1727,7 @@ process: #ifdef CONFIG_NET_DMA struct tcp_sock *tp = tcp_sk(sk); if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list) - tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY); + tp->ucopy.dma_chan = net_dma_find_channel(); if (tp->ucopy.dma_chan) ret = tcp_v4_do_rcv(sk, skb); else diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 3edd05ae4388..fcb3e4f0010e 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1755,7 +1755,7 @@ process: #ifdef CONFIG_NET_DMA struct tcp_sock *tp = tcp_sk(sk); if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list) - tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY); + tp->ucopy.dma_chan = net_dma_find_channel(); if (tp->ucopy.dma_chan) ret = tcp_v6_do_rcv(sk, skb); else -- cgit From 922ee08baad2052d0759f100e026d49798c51fef Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Wed, 25 Apr 2012 20:50:53 +0200 Subject: dmaengine: Fixup dmaengine_prep_slave_single() to be actually useful dmaengine_prep_slave_single() is a helper function which is supposed to be used to prepare a transfer of a single contingous buffer. Currently the function takes a pointer to such a buffer from which it builds a scatterlist and passes it on to device_prep_slave_sg. The dmaengine framework requires that any scatterlist that is passed to device_prep_slave_sg is mapped and it may not be unmapped until the DMA operation has completed. This is not the here and any use of dmaengine_prep_slave_single() will lead to undefined behaviour (Most likely a system crash). This patch changes dmaengine_prep_slave_single() to take a dma_addr_t instead of a pointer to a buffer and moves the responsibility of mapping and unmapping the buffer up to the caller. Signed-off-by: Kuninori Morimoto Signed-off-by: Lars-Peter Clausen Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux/dmaengine.h') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 676f967390ae..0e6b595e95c8 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -615,11 +615,13 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, } static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( - struct dma_chan *chan, void *buf, size_t len, + struct dma_chan *chan, dma_addr_t buf, size_t len, enum dma_transfer_direction dir, unsigned long flags) { struct scatterlist sg; - sg_init_one(&sg, buf, len); + sg_init_table(&sg, 1); + sg_dma_address(&sg) = buf; + sg_dma_len(&sg) = len; return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags, NULL); -- cgit From e42d98ebe7d754a2c9fbccd6186721d3ca8679f6 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 31 May 2012 16:26:38 -0700 Subject: rapidio: add DMA engine support for RIO data transfers Adds DMA Engine framework support into RapidIO subsystem. Uses DMA Engine DMA_SLAVE interface to generate data transfers to/from remote RapidIO target devices. Introduces RapidIO-specific wrapper for prep_slave_sg() interface with an extra parameter to pass target specific information. Uses scatterlist to describe local data buffer. Address flat data buffer on a remote side. Signed-off-by: Alexandre Bounine Cc: Dan Williams Acked-by: Vinod Koul Cc: Li Yang Cc: Matt Porter Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/Kconfig | 14 ++++++++ drivers/rapidio/rio.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++ include/linux/dmaengine.h | 12 +++++++ include/linux/rio.h | 47 +++++++++++++++++++++++++++ include/linux/rio_drv.h | 9 ++++++ 5 files changed, 163 insertions(+) (limited to 'include/linux/dmaengine.h') diff --git a/drivers/rapidio/Kconfig b/drivers/rapidio/Kconfig index bc8719238793..6194d35ebb97 100644 --- a/drivers/rapidio/Kconfig +++ b/drivers/rapidio/Kconfig @@ -22,6 +22,20 @@ config RAPIDIO_ENABLE_RX_TX_PORTS ports for Input/Output direction to allow other traffic than Maintenance transfers. +config RAPIDIO_DMA_ENGINE + bool "DMA Engine support for RapidIO" + depends on RAPIDIO + select DMADEVICES + select DMA_ENGINE + help + Say Y here if you want to use DMA Engine frameork for RapidIO data + transfers to/from target RIO devices. RapidIO uses NREAD and + NWRITE (NWRITE_R, SWRITE) requests to transfer data between local + memory and memory on remote target device. You need a DMA controller + capable to perform data transfers to/from RapidIO. + + If you are unsure about this, say Y here. + config RAPIDIO_DEBUG bool "RapidIO subsystem debug messages" depends on RAPIDIO diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index 86c9a091a2ff..c40665a4fa33 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -1121,6 +1121,87 @@ int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, return 0; } +#ifdef CONFIG_RAPIDIO_DMA_ENGINE + +static bool rio_chan_filter(struct dma_chan *chan, void *arg) +{ + struct rio_dev *rdev = arg; + + /* Check that DMA device belongs to the right MPORT */ + return (rdev->net->hport == + container_of(chan->device, struct rio_mport, dma)); +} + +/** + * rio_request_dma - request RapidIO capable DMA channel that supports + * specified target RapidIO device. + * @rdev: RIO device control structure + * + * Returns pointer to allocated DMA channel or NULL if failed. + */ +struct dma_chan *rio_request_dma(struct rio_dev *rdev) +{ + dma_cap_mask_t mask; + struct dma_chan *dchan; + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + dchan = dma_request_channel(mask, rio_chan_filter, rdev); + + return dchan; +} +EXPORT_SYMBOL_GPL(rio_request_dma); + +/** + * rio_release_dma - release specified DMA channel + * @dchan: DMA channel to release + */ +void rio_release_dma(struct dma_chan *dchan) +{ + dma_release_channel(dchan); +} +EXPORT_SYMBOL_GPL(rio_release_dma); + +/** + * rio_dma_prep_slave_sg - RapidIO specific wrapper + * for device_prep_slave_sg callback defined by DMAENGINE. + * @rdev: RIO device control structure + * @dchan: DMA channel to configure + * @data: RIO specific data descriptor + * @direction: DMA data transfer direction (TO or FROM the device) + * @flags: dmaengine defined flags + * + * Initializes RapidIO capable DMA channel for the specified data transfer. + * Uses DMA channel private extension to pass information related to remote + * target RIO device. + * Returns pointer to DMA transaction descriptor or NULL if failed. + */ +struct dma_async_tx_descriptor *rio_dma_prep_slave_sg(struct rio_dev *rdev, + struct dma_chan *dchan, struct rio_dma_data *data, + enum dma_transfer_direction direction, unsigned long flags) +{ + struct dma_async_tx_descriptor *txd = NULL; + struct rio_dma_ext rio_ext; + + if (dchan->device->device_prep_slave_sg == NULL) { + pr_err("%s: prep_rio_sg == NULL\n", __func__); + return NULL; + } + + rio_ext.destid = rdev->destid; + rio_ext.rio_addr_u = data->rio_addr_u; + rio_ext.rio_addr = data->rio_addr; + rio_ext.wr_type = data->wr_type; + + txd = dmaengine_prep_rio_sg(dchan, data->sg, data->sg_len, + direction, flags, &rio_ext); + + return txd; +} +EXPORT_SYMBOL_GPL(rio_dma_prep_slave_sg); + +#endif /* CONFIG_RAPIDIO_DMA_ENGINE */ + static void rio_fixup_device(struct rio_dev *dev) { } diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index d3fec584e8c3..56377df39124 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -635,6 +635,18 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_sg( dir, flags, NULL); } +#ifdef CONFIG_RAPIDIO_DMA_ENGINE +struct rio_dma_ext; +static inline struct dma_async_tx_descriptor *dmaengine_prep_rio_sg( + struct dma_chan *chan, struct scatterlist *sgl, unsigned int sg_len, + enum dma_transfer_direction dir, unsigned long flags, + struct rio_dma_ext *rio_ext) +{ + return chan->device->device_prep_slave_sg(chan, sgl, sg_len, + dir, flags, rio_ext); +} +#endif + static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic( struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len, size_t period_len, enum dma_transfer_direction dir) diff --git a/include/linux/rio.h b/include/linux/rio.h index 4d50611112ba..a90ebadd9da0 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -20,6 +20,9 @@ #include #include #include +#ifdef CONFIG_RAPIDIO_DMA_ENGINE +#include +#endif #define RIO_NO_HOPCOUNT -1 #define RIO_INVALID_DESTID 0xffff @@ -254,6 +257,9 @@ struct rio_mport { u32 phys_efptr; unsigned char name[40]; void *priv; /* Master port private data */ +#ifdef CONFIG_RAPIDIO_DMA_ENGINE + struct dma_device dma; +#endif }; /** @@ -395,6 +401,47 @@ union rio_pw_msg { u32 raw[RIO_PW_MSG_SIZE/sizeof(u32)]; }; +#ifdef CONFIG_RAPIDIO_DMA_ENGINE + +/** + * enum rio_write_type - RIO write transaction types used in DMA transfers + * + * Note: RapidIO specification defines write (NWRITE) and + * write-with-response (NWRITE_R) data transfer operations. + * Existing DMA controllers that service RapidIO may use one of these operations + * for entire data transfer or their combination with only the last data packet + * requires response. + */ +enum rio_write_type { + RDW_DEFAULT, /* default method used by DMA driver */ + RDW_ALL_NWRITE, /* all packets use NWRITE */ + RDW_ALL_NWRITE_R, /* all packets use NWRITE_R */ + RDW_LAST_NWRITE_R, /* last packet uses NWRITE_R, others - NWRITE */ +}; + +struct rio_dma_ext { + u16 destid; + u64 rio_addr; /* low 64-bits of 66-bit RapidIO address */ + u8 rio_addr_u; /* upper 2-bits of 66-bit RapidIO address */ + enum rio_write_type wr_type; /* preferred RIO write operation type */ +}; + +struct rio_dma_data { + /* Local data (as scatterlist) */ + struct scatterlist *sg; /* I/O scatter list */ + unsigned int sg_len; /* size of scatter list */ + /* Remote device address (flat buffer) */ + u64 rio_addr; /* low 64-bits of 66-bit RapidIO address */ + u8 rio_addr_u; /* upper 2-bits of 66-bit RapidIO address */ + enum rio_write_type wr_type; /* preferred RIO write operation type */ +}; + +static inline struct rio_mport *dma_to_mport(struct dma_device *ddev) +{ + return container_of(ddev, struct rio_mport, dma); +} +#endif /* CONFIG_RAPIDIO_DMA_ENGINE */ + /* Architecture and hardware-specific functions */ extern int rio_register_mport(struct rio_mport *); extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int); diff --git a/include/linux/rio_drv.h b/include/linux/rio_drv.h index 7f07470e1ed9..31ad146be316 100644 --- a/include/linux/rio_drv.h +++ b/include/linux/rio_drv.h @@ -377,6 +377,15 @@ void rio_unregister_driver(struct rio_driver *); struct rio_dev *rio_dev_get(struct rio_dev *); void rio_dev_put(struct rio_dev *); +#ifdef CONFIG_RAPIDIO_DMA_ENGINE +extern struct dma_chan *rio_request_dma(struct rio_dev *rdev); +extern void rio_release_dma(struct dma_chan *dchan); +extern struct dma_async_tx_descriptor *rio_dma_prep_slave_sg( + struct rio_dev *rdev, struct dma_chan *dchan, + struct rio_dma_data *data, + enum dma_transfer_direction direction, unsigned long flags); +#endif + /** * rio_name - Get the unique RIO device identifier * @rdev: RIO device -- cgit