diff options
Diffstat (limited to 'drivers/dma/xilinx/xilinx_vdma.c')
| -rw-r--r-- | drivers/dma/xilinx/xilinx_vdma.c | 632 |
1 files changed, 316 insertions, 316 deletions
diff --git a/drivers/dma/xilinx/xilinx_vdma.c b/drivers/dma/xilinx/xilinx_vdma.c index 781ab4dbb2b8..57b85af4ed08 100644 --- a/drivers/dma/xilinx/xilinx_vdma.c +++ b/drivers/dma/xilinx/xilinx_vdma.c @@ -39,106 +39,106 @@ #include "../dmaengine.h" /* Register/Descriptor Offsets */ -#define XILINX_VDMA_MM2S_CTRL_OFFSET 0x0000 -#define XILINX_VDMA_S2MM_CTRL_OFFSET 0x0030 +#define XILINX_DMA_MM2S_CTRL_OFFSET 0x0000 +#define XILINX_DMA_S2MM_CTRL_OFFSET 0x0030 #define XILINX_VDMA_MM2S_DESC_OFFSET 0x0050 #define XILINX_VDMA_S2MM_DESC_OFFSET 0x00a0 /* Control Registers */ -#define XILINX_VDMA_REG_DMACR 0x0000 -#define XILINX_VDMA_DMACR_DELAY_MAX 0xff -#define XILINX_VDMA_DMACR_DELAY_SHIFT 24 -#define XILINX_VDMA_DMACR_FRAME_COUNT_MAX 0xff -#define XILINX_VDMA_DMACR_FRAME_COUNT_SHIFT 16 -#define XILINX_VDMA_DMACR_ERR_IRQ BIT(14) -#define XILINX_VDMA_DMACR_DLY_CNT_IRQ BIT(13) -#define XILINX_VDMA_DMACR_FRM_CNT_IRQ BIT(12) -#define XILINX_VDMA_DMACR_MASTER_SHIFT 8 -#define XILINX_VDMA_DMACR_FSYNCSRC_SHIFT 5 -#define XILINX_VDMA_DMACR_FRAMECNT_EN BIT(4) -#define XILINX_VDMA_DMACR_GENLOCK_EN BIT(3) -#define XILINX_VDMA_DMACR_RESET BIT(2) -#define XILINX_VDMA_DMACR_CIRC_EN BIT(1) -#define XILINX_VDMA_DMACR_RUNSTOP BIT(0) -#define XILINX_VDMA_DMACR_FSYNCSRC_MASK GENMASK(6, 5) - -#define XILINX_VDMA_REG_DMASR 0x0004 -#define XILINX_VDMA_DMASR_EOL_LATE_ERR BIT(15) -#define XILINX_VDMA_DMASR_ERR_IRQ BIT(14) -#define XILINX_VDMA_DMASR_DLY_CNT_IRQ BIT(13) -#define XILINX_VDMA_DMASR_FRM_CNT_IRQ BIT(12) -#define XILINX_VDMA_DMASR_SOF_LATE_ERR BIT(11) -#define XILINX_VDMA_DMASR_SG_DEC_ERR BIT(10) -#define XILINX_VDMA_DMASR_SG_SLV_ERR BIT(9) -#define XILINX_VDMA_DMASR_EOF_EARLY_ERR BIT(8) -#define XILINX_VDMA_DMASR_SOF_EARLY_ERR BIT(7) -#define XILINX_VDMA_DMASR_DMA_DEC_ERR BIT(6) -#define XILINX_VDMA_DMASR_DMA_SLAVE_ERR BIT(5) -#define XILINX_VDMA_DMASR_DMA_INT_ERR BIT(4) -#define XILINX_VDMA_DMASR_IDLE BIT(1) -#define XILINX_VDMA_DMASR_HALTED BIT(0) -#define XILINX_VDMA_DMASR_DELAY_MASK GENMASK(31, 24) -#define XILINX_VDMA_DMASR_FRAME_COUNT_MASK GENMASK(23, 16) - -#define XILINX_VDMA_REG_CURDESC 0x0008 -#define XILINX_VDMA_REG_TAILDESC 0x0010 -#define XILINX_VDMA_REG_REG_INDEX 0x0014 -#define XILINX_VDMA_REG_FRMSTORE 0x0018 -#define XILINX_VDMA_REG_THRESHOLD 0x001c -#define XILINX_VDMA_REG_FRMPTR_STS 0x0024 -#define XILINX_VDMA_REG_PARK_PTR 0x0028 -#define XILINX_VDMA_PARK_PTR_WR_REF_SHIFT 8 -#define XILINX_VDMA_PARK_PTR_RD_REF_SHIFT 0 -#define XILINX_VDMA_REG_VDMA_VERSION 0x002c +#define XILINX_DMA_REG_DMACR 0x0000 +#define XILINX_DMA_DMACR_DELAY_MAX 0xff +#define XILINX_DMA_DMACR_DELAY_SHIFT 24 +#define XILINX_DMA_DMACR_FRAME_COUNT_MAX 0xff +#define XILINX_DMA_DMACR_FRAME_COUNT_SHIFT 16 +#define XILINX_DMA_DMACR_ERR_IRQ BIT(14) +#define XILINX_DMA_DMACR_DLY_CNT_IRQ BIT(13) +#define XILINX_DMA_DMACR_FRM_CNT_IRQ BIT(12) +#define XILINX_DMA_DMACR_MASTER_SHIFT 8 +#define XILINX_DMA_DMACR_FSYNCSRC_SHIFT 5 +#define XILINX_DMA_DMACR_FRAMECNT_EN BIT(4) +#define XILINX_DMA_DMACR_GENLOCK_EN BIT(3) +#define XILINX_DMA_DMACR_RESET BIT(2) +#define XILINX_DMA_DMACR_CIRC_EN BIT(1) +#define XILINX_DMA_DMACR_RUNSTOP BIT(0) +#define XILINX_DMA_DMACR_FSYNCSRC_MASK GENMASK(6, 5) + +#define XILINX_DMA_REG_DMASR 0x0004 +#define XILINX_DMA_DMASR_EOL_LATE_ERR BIT(15) +#define XILINX_DMA_DMASR_ERR_IRQ BIT(14) +#define XILINX_DMA_DMASR_DLY_CNT_IRQ BIT(13) +#define XILINX_DMA_DMASR_FRM_CNT_IRQ BIT(12) +#define XILINX_DMA_DMASR_SOF_LATE_ERR BIT(11) +#define XILINX_DMA_DMASR_SG_DEC_ERR BIT(10) +#define XILINX_DMA_DMASR_SG_SLV_ERR BIT(9) +#define XILINX_DMA_DMASR_EOF_EARLY_ERR BIT(8) +#define XILINX_DMA_DMASR_SOF_EARLY_ERR BIT(7) +#define XILINX_DMA_DMASR_DMA_DEC_ERR BIT(6) +#define XILINX_DMA_DMASR_DMA_SLAVE_ERR BIT(5) +#define XILINX_DMA_DMASR_DMA_INT_ERR BIT(4) +#define XILINX_DMA_DMASR_IDLE BIT(1) +#define XILINX_DMA_DMASR_HALTED BIT(0) +#define XILINX_DMA_DMASR_DELAY_MASK GENMASK(31, 24) +#define XILINX_DMA_DMASR_FRAME_COUNT_MASK GENMASK(23, 16) + +#define XILINX_DMA_REG_CURDESC 0x0008 +#define XILINX_DMA_REG_TAILDESC 0x0010 +#define XILINX_DMA_REG_REG_INDEX 0x0014 +#define XILINX_DMA_REG_FRMSTORE 0x0018 +#define XILINX_DMA_REG_THRESHOLD 0x001c +#define XILINX_DMA_REG_FRMPTR_STS 0x0024 +#define XILINX_DMA_REG_PARK_PTR 0x0028 +#define XILINX_DMA_PARK_PTR_WR_REF_SHIFT 8 +#define XILINX_DMA_PARK_PTR_RD_REF_SHIFT 0 +#define XILINX_DMA_REG_VDMA_VERSION 0x002c /* Register Direct Mode Registers */ -#define XILINX_VDMA_REG_VSIZE 0x0000 -#define XILINX_VDMA_REG_HSIZE 0x0004 +#define XILINX_DMA_REG_VSIZE 0x0000 +#define XILINX_DMA_REG_HSIZE 0x0004 -#define XILINX_VDMA_REG_FRMDLY_STRIDE 0x0008 -#define XILINX_VDMA_FRMDLY_STRIDE_FRMDLY_SHIFT 24 -#define XILINX_VDMA_FRMDLY_STRIDE_STRIDE_SHIFT 0 +#define XILINX_DMA_REG_FRMDLY_STRIDE 0x0008 +#define XILINX_DMA_FRMDLY_STRIDE_FRMDLY_SHIFT 24 +#define XILINX_DMA_FRMDLY_STRIDE_STRIDE_SHIFT 0 #define XILINX_VDMA_REG_START_ADDRESS(n) (0x000c + 4 * (n)) #define XILINX_VDMA_REG_START_ADDRESS_64(n) (0x000c + 8 * (n)) /* HW specific definitions */ -#define XILINX_VDMA_MAX_CHANS_PER_DEVICE 0x2 - -#define XILINX_VDMA_DMAXR_ALL_IRQ_MASK \ - (XILINX_VDMA_DMASR_FRM_CNT_IRQ | \ - XILINX_VDMA_DMASR_DLY_CNT_IRQ | \ - XILINX_VDMA_DMASR_ERR_IRQ) - -#define XILINX_VDMA_DMASR_ALL_ERR_MASK \ - (XILINX_VDMA_DMASR_EOL_LATE_ERR | \ - XILINX_VDMA_DMASR_SOF_LATE_ERR | \ - XILINX_VDMA_DMASR_SG_DEC_ERR | \ - XILINX_VDMA_DMASR_SG_SLV_ERR | \ - XILINX_VDMA_DMASR_EOF_EARLY_ERR | \ - XILINX_VDMA_DMASR_SOF_EARLY_ERR | \ - XILINX_VDMA_DMASR_DMA_DEC_ERR | \ - XILINX_VDMA_DMASR_DMA_SLAVE_ERR | \ - XILINX_VDMA_DMASR_DMA_INT_ERR) +#define XILINX_DMA_MAX_CHANS_PER_DEVICE 0x2 + +#define XILINX_DMA_DMAXR_ALL_IRQ_MASK \ + (XILINX_DMA_DMASR_FRM_CNT_IRQ | \ + XILINX_DMA_DMASR_DLY_CNT_IRQ | \ + XILINX_DMA_DMASR_ERR_IRQ) + +#define XILINX_DMA_DMASR_ALL_ERR_MASK \ + (XILINX_DMA_DMASR_EOL_LATE_ERR | \ + XILINX_DMA_DMASR_SOF_LATE_ERR | \ + XILINX_DMA_DMASR_SG_DEC_ERR | \ + XILINX_DMA_DMASR_SG_SLV_ERR | \ + XILINX_DMA_DMASR_EOF_EARLY_ERR | \ + XILINX_DMA_DMASR_SOF_EARLY_ERR | \ + XILINX_DMA_DMASR_DMA_DEC_ERR | \ + XILINX_DMA_DMASR_DMA_SLAVE_ERR | \ + XILINX_DMA_DMASR_DMA_INT_ERR) /* * Recoverable errors are DMA Internal error, SOF Early, EOF Early * and SOF Late. They are only recoverable when C_FLUSH_ON_FSYNC * is enabled in the h/w system. */ -#define XILINX_VDMA_DMASR_ERR_RECOVER_MASK \ - (XILINX_VDMA_DMASR_SOF_LATE_ERR | \ - XILINX_VDMA_DMASR_EOF_EARLY_ERR | \ - XILINX_VDMA_DMASR_SOF_EARLY_ERR | \ - XILINX_VDMA_DMASR_DMA_INT_ERR) +#define XILINX_DMA_DMASR_ERR_RECOVER_MASK \ + (XILINX_DMA_DMASR_SOF_LATE_ERR | \ + XILINX_DMA_DMASR_EOF_EARLY_ERR | \ + XILINX_DMA_DMASR_SOF_EARLY_ERR | \ + XILINX_DMA_DMASR_DMA_INT_ERR) /* Axi VDMA Flush on Fsync bits */ -#define XILINX_VDMA_FLUSH_S2MM 3 -#define XILINX_VDMA_FLUSH_MM2S 2 -#define XILINX_VDMA_FLUSH_BOTH 1 +#define XILINX_DMA_FLUSH_S2MM 3 +#define XILINX_DMA_FLUSH_MM2S 2 +#define XILINX_DMA_FLUSH_BOTH 1 /* Delay loop counter to prevent hardware failure */ -#define XILINX_VDMA_LOOP_COUNT 1000000 +#define XILINX_DMA_LOOP_COUNT 1000000 /** * struct xilinx_vdma_desc_hw - Hardware Descriptor @@ -174,19 +174,19 @@ struct xilinx_vdma_tx_segment { } __aligned(64); /** - * struct xilinx_vdma_tx_descriptor - Per Transaction structure + * struct xilinx_dma_tx_descriptor - Per Transaction structure * @async_tx: Async transaction descriptor * @segments: TX segments list * @node: Node in the channel descriptors list */ -struct xilinx_vdma_tx_descriptor { +struct xilinx_dma_tx_descriptor { struct dma_async_tx_descriptor async_tx; struct list_head segments; struct list_head node; }; /** - * struct xilinx_vdma_chan - Driver specific VDMA channel structure + * struct xilinx_dma_chan - Driver specific DMA channel structure * @xdev: Driver specific device structure * @ctrl_offset: Control registers offset * @desc_offset: TX descriptor registers offset @@ -211,8 +211,8 @@ struct xilinx_vdma_tx_descriptor { * @ext_addr: Indicates 64 bit addressing is supported by dma channel * @desc_submitcount: Descriptor h/w submitted count */ -struct xilinx_vdma_chan { - struct xilinx_vdma_device *xdev; +struct xilinx_dma_chan { + struct xilinx_dma_device *xdev; u32 ctrl_offset; u32 desc_offset; spinlock_t lock; @@ -238,20 +238,20 @@ struct xilinx_vdma_chan { }; /** - * struct xilinx_vdma_device - VDMA device structure + * struct xilinx_dma_device - DMA device structure * @regs: I/O mapped base address * @dev: Device Structure * @common: DMA device structure - * @chan: Driver specific VDMA channel + * @chan: Driver specific DMA channel * @has_sg: Specifies whether Scatter-Gather is present or not * @flush_on_fsync: Flush on frame sync * @ext_addr: Indicates 64 bit addressing is supported by dma device */ -struct xilinx_vdma_device { +struct xilinx_dma_device { void __iomem *regs; struct device *dev; struct dma_device common; - struct xilinx_vdma_chan *chan[XILINX_VDMA_MAX_CHANS_PER_DEVICE]; + struct xilinx_dma_chan *chan[XILINX_DMA_MAX_CHANS_PER_DEVICE]; bool has_sg; u32 flush_on_fsync; bool ext_addr; @@ -259,51 +259,51 @@ struct xilinx_vdma_device { /* Macros */ #define to_xilinx_chan(chan) \ - container_of(chan, struct xilinx_vdma_chan, common) -#define to_vdma_tx_descriptor(tx) \ - container_of(tx, struct xilinx_vdma_tx_descriptor, async_tx) -#define xilinx_vdma_poll_timeout(chan, reg, val, cond, delay_us, timeout_us) \ + container_of(chan, struct xilinx_dma_chan, common) +#define to_dma_tx_descriptor(tx) \ + container_of(tx, struct xilinx_dma_tx_descriptor, async_tx) +#define xilinx_dma_poll_timeout(chan, reg, val, cond, delay_us, timeout_us) \ readl_poll_timeout(chan->xdev->regs + chan->ctrl_offset + reg, val, \ cond, delay_us, timeout_us) /* IO accessors */ -static inline u32 vdma_read(struct xilinx_vdma_chan *chan, u32 reg) +static inline u32 dma_read(struct xilinx_dma_chan *chan, u32 reg) { return ioread32(chan->xdev->regs + reg); } -static inline void vdma_write(struct xilinx_vdma_chan *chan, u32 reg, u32 value) +static inline void dma_write(struct xilinx_dma_chan *chan, u32 reg, u32 value) { iowrite32(value, chan->xdev->regs + reg); } -static inline void vdma_desc_write(struct xilinx_vdma_chan *chan, u32 reg, +static inline void vdma_desc_write(struct xilinx_dma_chan *chan, u32 reg, u32 value) { - vdma_write(chan, chan->desc_offset + reg, value); + dma_write(chan, chan->desc_offset + reg, value); } -static inline u32 vdma_ctrl_read(struct xilinx_vdma_chan *chan, u32 reg) +static inline u32 dma_ctrl_read(struct xilinx_dma_chan *chan, u32 reg) { - return vdma_read(chan, chan->ctrl_offset + reg); + return dma_read(chan, chan->ctrl_offset + reg); } -static inline void vdma_ctrl_write(struct xilinx_vdma_chan *chan, u32 reg, +static inline void dma_ctrl_write(struct xilinx_dma_chan *chan, u32 reg, u32 value) { - vdma_write(chan, chan->ctrl_offset + reg, value); + dma_write(chan, chan->ctrl_offset + reg, value); } -static inline void vdma_ctrl_clr(struct xilinx_vdma_chan *chan, u32 reg, +static inline void dma_ctrl_clr(struct xilinx_dma_chan *chan, u32 reg, u32 clr) { - vdma_ctrl_write(chan, reg, vdma_ctrl_read(chan, reg) & ~clr); + dma_ctrl_write(chan, reg, dma_ctrl_read(chan, reg) & ~clr); } -static inline void vdma_ctrl_set(struct xilinx_vdma_chan *chan, u32 reg, +static inline void dma_ctrl_set(struct xilinx_dma_chan *chan, u32 reg, u32 set) { - vdma_ctrl_write(chan, reg, vdma_ctrl_read(chan, reg) | set); + dma_ctrl_write(chan, reg, dma_ctrl_read(chan, reg) | set); } /** @@ -317,7 +317,7 @@ static inline void vdma_ctrl_set(struct xilinx_vdma_chan *chan, u32 reg, * multiple of 64 bits(ex : 0x5c), we are writing as two separate 32 bits * instead of a single 64 bit register write. */ -static inline void vdma_desc_write_64(struct xilinx_vdma_chan *chan, u32 reg, +static inline void vdma_desc_write_64(struct xilinx_dma_chan *chan, u32 reg, u32 value_lsb, u32 value_msb) { /* Write the lsb 32 bits*/ @@ -333,12 +333,12 @@ static inline void vdma_desc_write_64(struct xilinx_vdma_chan *chan, u32 reg, /** * xilinx_vdma_alloc_tx_segment - Allocate transaction segment - * @chan: Driver specific VDMA channel + * @chan: Driver specific DMA channel * * Return: The allocated segment on success and NULL on failure. */ static struct xilinx_vdma_tx_segment * -xilinx_vdma_alloc_tx_segment(struct xilinx_vdma_chan *chan) +xilinx_vdma_alloc_tx_segment(struct xilinx_dma_chan *chan) { struct xilinx_vdma_tx_segment *segment; dma_addr_t phys; @@ -354,25 +354,25 @@ xilinx_vdma_alloc_tx_segment(struct xilinx_vdma_chan *chan) /** * xilinx_vdma_free_tx_segment - Free transaction segment - * @chan: Driver specific VDMA channel - * @segment: VDMA transaction segment + * @chan: Driver specific DMA channel + * @segment: DMA transaction segment */ -static void xilinx_vdma_free_tx_segment(struct xilinx_vdma_chan *chan, +static void xilinx_vdma_free_tx_segment(struct xilinx_dma_chan *chan, struct xilinx_vdma_tx_segment *segment) { dma_pool_free(chan->desc_pool, segment, segment->phys); } /** - * xilinx_vdma_tx_descriptor - Allocate transaction descriptor - * @chan: Driver specific VDMA channel + * xilinx_dma_tx_descriptor - Allocate transaction descriptor + * @chan: Driver specific DMA channel * * Return: The allocated descriptor on success and NULL on failure. */ -static struct xilinx_vdma_tx_descriptor * -xilinx_vdma_alloc_tx_descriptor(struct xilinx_vdma_chan *chan) +static struct xilinx_dma_tx_descriptor * +xilinx_dma_alloc_tx_descriptor(struct xilinx_dma_chan *chan) { - struct xilinx_vdma_tx_descriptor *desc; + struct xilinx_dma_tx_descriptor *desc; desc = kzalloc(sizeof(*desc), GFP_KERNEL); if (!desc) @@ -384,13 +384,13 @@ xilinx_vdma_alloc_tx_descriptor(struct xilinx_vdma_chan *chan) } /** - * xilinx_vdma_free_tx_descriptor - Free transaction descriptor - * @chan: Driver specific VDMA channel - * @desc: VDMA transaction descriptor + * xilinx_dma_free_tx_descriptor - Free transaction descriptor + * @chan: Driver specific DMA channel + * @desc: DMA transaction descriptor */ static void -xilinx_vdma_free_tx_descriptor(struct xilinx_vdma_chan *chan, - struct xilinx_vdma_tx_descriptor *desc) +xilinx_dma_free_tx_descriptor(struct xilinx_dma_chan *chan, + struct xilinx_dma_tx_descriptor *desc) { struct xilinx_vdma_tx_segment *segment, *next; @@ -408,60 +408,60 @@ xilinx_vdma_free_tx_descriptor(struct xilinx_vdma_chan *chan, /* Required functions */ /** - * xilinx_vdma_free_desc_list - Free descriptors list - * @chan: Driver specific VDMA channel + * xilinx_dma_free_desc_list - Free descriptors list + * @chan: Driver specific DMA channel * @list: List to parse and delete the descriptor */ -static void xilinx_vdma_free_desc_list(struct xilinx_vdma_chan *chan, +static void xilinx_dma_free_desc_list(struct xilinx_dma_chan *chan, struct list_head *list) { - struct xilinx_vdma_tx_descriptor *desc, *next; + struct xilinx_dma_tx_descriptor *desc, *next; list_for_each_entry_safe(desc, next, list, node) { list_del(&desc->node); - xilinx_vdma_free_tx_descriptor(chan, desc); + xilinx_dma_free_tx_descriptor(chan, desc); } } /** - * xilinx_vdma_free_descriptors - Free channel descriptors - * @chan: Driver specific VDMA channel + * xilinx_dma_free_descriptors - Free channel descriptors + * @chan: Driver specific DMA channel */ -static void xilinx_vdma_free_descriptors(struct xilinx_vdma_chan *chan) +static void xilinx_dma_free_descriptors(struct xilinx_dma_chan *chan) { unsigned long flags; spin_lock_irqsave(&chan->lock, flags); - xilinx_vdma_free_desc_list(chan, &chan->pending_list); - xilinx_vdma_free_desc_list(chan, &chan->done_list); - xilinx_vdma_free_desc_list(chan, &chan->active_list); + xilinx_dma_free_desc_list(chan, &chan->pending_list); + xilinx_dma_free_desc_list(chan, &chan->done_list); + xilinx_dma_free_desc_list(chan, &chan->active_list); spin_unlock_irqrestore(&chan->lock, flags); } /** - * xilinx_vdma_free_chan_resources - Free channel resources + * xilinx_dma_free_chan_resources - Free channel resources * @dchan: DMA channel */ -static void xilinx_vdma_free_chan_resources(struct dma_chan *dchan) +static void xilinx_dma_free_chan_resources(struct dma_chan *dchan) { - struct xilinx_vdma_chan *chan = to_xilinx_chan(dchan); + struct xilinx_dma_chan *chan = to_xilinx_chan(dchan); dev_dbg(chan->dev, "Free all channel resources.\n"); - xilinx_vdma_free_descriptors(chan); + xilinx_dma_free_descriptors(chan); dma_pool_destroy(chan->desc_pool); chan->desc_pool = NULL; } /** - * xilinx_vdma_chan_desc_cleanup - Clean channel descriptors - * @chan: Driver specific VDMA channel + * xilinx_dma_chan_desc_cleanup - Clean channel descriptors + * @chan: Driver specific DMA channel */ -static void xilinx_vdma_chan_desc_cleanup(struct xilinx_vdma_chan *chan) +static void xilinx_dma_chan_desc_cleanup(struct xilinx_dma_chan *chan) { - struct xilinx_vdma_tx_descriptor *desc, *next; + struct xilinx_dma_tx_descriptor *desc, *next; unsigned long flags; spin_lock_irqsave(&chan->lock, flags); @@ -484,32 +484,32 @@ static void xilinx_vdma_chan_desc_cleanup(struct xilinx_vdma_chan *chan) /* Run any dependencies, then free the descriptor */ dma_run_dependencies(&desc->async_tx); - xilinx_vdma_free_tx_descriptor(chan, desc); + xilinx_dma_free_tx_descriptor(chan, desc); } spin_unlock_irqrestore(&chan->lock, flags); } /** - * xilinx_vdma_do_tasklet - Schedule completion tasklet - * @data: Pointer to the Xilinx VDMA channel structure + * xilinx_dma_do_tasklet - Schedule completion tasklet + * @data: Pointer to the Xilinx DMA channel structure */ -static void xilinx_vdma_do_tasklet(unsigned long data) +static void xilinx_dma_do_tasklet(unsigned long data) { - struct xilinx_vdma_chan *chan = (struct xilinx_vdma_chan *)data; + struct xilinx_dma_chan *chan = (struct xilinx_dma_chan *)data; - xilinx_vdma_chan_desc_cleanup(chan); + xilinx_dma_chan_desc_cleanup(chan); } /** - * xilinx_vdma_alloc_chan_resources - Allocate channel resources + * xilinx_dma_alloc_chan_resources - Allocate channel resources * @dchan: DMA channel * * Return: '0' on success and failure value on error */ -static int xilinx_vdma_alloc_chan_resources(struct dma_chan *dchan) +static int xilinx_dma_alloc_chan_resources(struct dma_chan *dchan) { - struct xilinx_vdma_chan *chan = to_xilinx_chan(dchan); + struct xilinx_dma_chan *chan = to_xilinx_chan(dchan); /* Has this channel already been allocated? */ if (chan->desc_pool) @@ -535,14 +535,14 @@ static int xilinx_vdma_alloc_chan_resources(struct dma_chan *dchan) } /** - * xilinx_vdma_tx_status - Get VDMA transaction status + * xilinx_dma_tx_status - Get DMA transaction status * @dchan: DMA channel * @cookie: Transaction identifier * @txstate: Transaction state * * Return: DMA transaction status */ -static enum dma_status xilinx_vdma_tx_status(struct dma_chan *dchan, +static enum dma_status xilinx_dma_tx_status(struct dma_chan *dchan, dma_cookie_t cookie, struct dma_tx_state *txstate) { @@ -550,73 +550,73 @@ static enum dma_status xilinx_vdma_tx_status(struct dma_chan *dchan, } /** - * xilinx_vdma_is_running - Check if VDMA channel is running - * @chan: Driver specific VDMA channel + * xilinx_dma_is_running - Check if DMA channel is running + * @chan: Driver specific DMA channel * * Return: '1' if running, '0' if not. */ -static bool xilinx_vdma_is_running(struct xilinx_vdma_chan *chan) +static bool xilinx_dma_is_running(struct xilinx_dma_chan *chan) { - return !(vdma_ctrl_read(chan, XILINX_VDMA_REG_DMASR) & - XILINX_VDMA_DMASR_HALTED) && - (vdma_ctrl_read(chan, XILINX_VDMA_REG_DMACR) & - XILINX_VDMA_DMACR_RUNSTOP); + return !(dma_ctrl_read(chan, XILINX_DMA_REG_DMASR) & + XILINX_DMA_DMASR_HALTED) && + (dma_ctrl_read(chan, XILINX_DMA_REG_DMACR) & + XILINX_DMA_DMACR_RUNSTOP); } /** - * xilinx_vdma_is_idle - Check if VDMA channel is idle - * @chan: Driver specific VDMA channel + * xilinx_dma_is_idle - Check if DMA channel is idle + * @chan: Driver specific DMA channel * * Return: '1' if idle, '0' if not. */ -static bool xilinx_vdma_is_idle(struct xilinx_vdma_chan *chan) +static bool xilinx_dma_is_idle(struct xilinx_dma_chan *chan) { - return vdma_ctrl_read(chan, XILINX_VDMA_REG_DMASR) & - XILINX_VDMA_DMASR_IDLE; + return dma_ctrl_read(chan, XILINX_DMA_REG_DMASR) & + XILINX_DMA_DMASR_IDLE; } /** - * xilinx_vdma_halt - Halt VDMA channel - * @chan: Driver specific VDMA channel + * xilinx_dma_halt - Halt DMA channel + * @chan: Driver specific DMA channel */ -static void xilinx_vdma_halt(struct xilinx_vdma_chan *chan) +static void xilinx_dma_halt(struct xilinx_dma_chan *chan) { int err; u32 val; - vdma_ctrl_clr(chan, XILINX_VDMA_REG_DMACR, XILINX_VDMA_DMACR_RUNSTOP); + dma_ctrl_clr(chan, XILINX_DMA_REG_DMACR, XILINX_DMA_DMACR_RUNSTOP); /* Wait for the hardware to halt */ - err = xilinx_vdma_poll_timeout(chan, XILINX_VDMA_REG_DMASR, val, - (val & XILINX_VDMA_DMASR_HALTED), 0, - XILINX_VDMA_LOOP_COUNT); + err = xilinx_dma_poll_timeout(chan, XILINX_DMA_REG_DMASR, val, + (val & XILINX_DMA_DMASR_HALTED), 0, + XILINX_DMA_LOOP_COUNT); if (err) { dev_err(chan->dev, "Cannot stop channel %p: %x\n", - chan, vdma_ctrl_read(chan, XILINX_VDMA_REG_DMASR)); + chan, dma_ctrl_read(chan, XILINX_DMA_REG_DMASR)); chan->err = true; } } /** - * xilinx_vdma_start - Start VDMA channel - * @chan: Driver specific VDMA channel + * xilinx_dma_start - Start DMA channel + * @chan: Driver specific DMA channel */ -static void xilinx_vdma_start(struct xilinx_vdma_chan *chan) +static void xilinx_dma_start(struct xilinx_dma_chan *chan) { int err; u32 val; - vdma_ctrl_set(chan, XILINX_VDMA_REG_DMACR, XILINX_VDMA_DMACR_RUNSTOP); + dma_ctrl_set(chan, XILINX_DMA_REG_DMACR, XILINX_DMA_DMACR_RUNSTOP); /* Wait for the hardware to start */ - err = xilinx_vdma_poll_timeout(chan, XILINX_VDMA_REG_DMASR, val, - !(val & XILINX_VDMA_DMASR_HALTED), 0, - XILINX_VDMA_LOOP_COUNT); + err = xilinx_dma_poll_timeout(chan, XILINX_DMA_REG_DMASR, val, + !(val & XILINX_DMA_DMASR_HALTED), 0, + XILINX_DMA_LOOP_COUNT); if (err) { dev_err(chan->dev, "Cannot start channel %p: %x\n", - chan, vdma_ctrl_read(chan, XILINX_VDMA_REG_DMASR)); + chan, dma_ctrl_read(chan, XILINX_DMA_REG_DMASR)); chan->err = true; } @@ -626,10 +626,10 @@ static void xilinx_vdma_start(struct xilinx_vdma_chan *chan) * xilinx_vdma_start_transfer - Starts VDMA transfer * @chan: Driver specific channel struct pointer */ -static void xilinx_vdma_start_transfer(struct xilinx_vdma_chan *chan) +static void xilinx_vdma_start_transfer(struct xilinx_dma_chan *chan) { struct xilinx_vdma_config *config = &chan->config; - struct xilinx_vdma_tx_descriptor *desc, *tail_desc; + struct xilinx_dma_tx_descriptor *desc, *tail_desc; u32 reg; struct xilinx_vdma_tx_segment *tail_segment; @@ -641,16 +641,16 @@ static void xilinx_vdma_start_transfer(struct xilinx_vdma_chan *chan) return; desc = list_first_entry(&chan->pending_list, - struct xilinx_vdma_tx_descriptor, node); + struct xilinx_dma_tx_descriptor, node); tail_desc = list_last_entry(&chan->pending_list, - struct xilinx_vdma_tx_descriptor, node); + struct xilinx_dma_tx_descriptor, node); tail_segment = list_last_entry(&tail_desc->segments, struct xilinx_vdma_tx_segment, node); /* If it is SG mode and hardware is busy, cannot submit */ - if (chan->has_sg && xilinx_vdma_is_running(chan) && - !xilinx_vdma_is_idle(chan)) { + if (chan->has_sg && xilinx_dma_is_running(chan) && + !xilinx_dma_is_idle(chan)) { dev_dbg(chan->dev, "DMA controller still busy\n"); return; } @@ -660,19 +660,19 @@ static void xilinx_vdma_start_transfer(struct xilinx_vdma_chan *chan) * done, start new transfers */ if (chan->has_sg) - vdma_ctrl_write(chan, XILINX_VDMA_REG_CURDESC, + dma_ctrl_write(chan, XILINX_DMA_REG_CURDESC, desc->async_tx.phys); /* Configure the hardware using info in the config structure */ - reg = vdma_ctrl_read(chan, XILINX_VDMA_REG_DMACR); + reg = dma_ctrl_read(chan, XILINX_DMA_REG_DMACR); if (config->frm_cnt_en) - reg |= XILINX_VDMA_DMACR_FRAMECNT_EN; + reg |= XILINX_DMA_DMACR_FRAMECNT_EN; else - reg &= ~XILINX_VDMA_DMACR_FRAMECNT_EN; + reg &= ~XILINX_DMA_DMACR_FRAMECNT_EN; /* Configure channel to allow number frame buffers */ - vdma_ctrl_write(chan, XILINX_VDMA_REG_FRMSTORE, + dma_ctrl_write(chan, XILINX_DMA_REG_FRMSTORE, chan->desc_pendingcount); /* @@ -680,34 +680,34 @@ static void xilinx_vdma_start_transfer(struct xilinx_vdma_chan *chan) * In direct register mode, if not parking, enable circular mode */ if (chan->has_sg || !config->park) - reg |= XILINX_VDMA_DMACR_CIRC_EN; + reg |= XILINX_DMA_DMACR_CIRC_EN; if (config->park) - reg &= ~XILINX_VDMA_DMACR_CIRC_EN; + reg &= ~XILINX_DMA_DMACR_CIRC_EN; - vdma_ctrl_write(chan, XILINX_VDMA_REG_DMACR, reg); + dma_ctrl_write(chan, XILINX_DMA_REG_DMACR, reg); if (config->park && (config->park_frm >= 0) && (config->park_frm < chan->num_frms)) { if (chan->direction == DMA_MEM_TO_DEV) - vdma_write(chan, XILINX_VDMA_REG_PARK_PTR, + dma_write(chan, XILINX_DMA_REG_PARK_PTR, config->park_frm << - XILINX_VDMA_PARK_PTR_RD_REF_SHIFT); + XILINX_DMA_PARK_PTR_RD_REF_SHIFT); else - vdma_write(chan, XILINX_VDMA_REG_PARK_PTR, + dma_write(chan, XILINX_DMA_REG_PARK_PTR, config->park_frm << - XILINX_VDMA_PARK_PTR_WR_REF_SHIFT); + XILINX_DMA_PARK_PTR_WR_REF_SHIFT); } /* Start the hardware */ - xilinx_vdma_start(chan); + xilinx_dma_start(chan); if (chan->err) return; /* Start the transfer */ if (chan->has_sg) { - vdma_ctrl_write(chan, XILINX_VDMA_REG_TAILDESC, + dma_ctrl_write(chan, XILINX_DMA_REG_TAILDESC, tail_segment->phys); } else { struct xilinx_vdma_tx_segment *segment, *last = NULL; @@ -734,10 +734,10 @@ static void xilinx_vdma_start_transfer(struct xilinx_vdma_chan *chan) return; /* HW expects these parameters to be same for one transaction */ - vdma_desc_write(chan, XILINX_VDMA_REG_HSIZE, last->hw.hsize); - vdma_desc_write(chan, XILINX_VDMA_REG_FRMDLY_STRIDE, + vdma_desc_write(chan, XILINX_DMA_REG_HSIZE, last->hw.hsize); + vdma_desc_write(chan, XILINX_DMA_REG_FRMDLY_STRIDE, last->hw.stride); - vdma_desc_write(chan, XILINX_VDMA_REG_VSIZE, last->hw.vsize); + vdma_desc_write(chan, XILINX_DMA_REG_VSIZE, last->hw.vsize); } if (!chan->has_sg) { @@ -754,12 +754,12 @@ static void xilinx_vdma_start_transfer(struct xilinx_vdma_chan *chan) } /** - * xilinx_vdma_issue_pending - Issue pending transactions + * xilinx_dma_issue_pending - Issue pending transactions * @dchan: DMA channel */ -static void xilinx_vdma_issue_pending(struct dma_chan *dchan) +static void xilinx_dma_issue_pending(struct dma_chan *dchan) { - struct xilinx_vdma_chan *chan = to_xilinx_chan(dchan); + struct xilinx_dma_chan *chan = to_xilinx_chan(dchan); unsigned long flags; spin_lock_irqsave(&chan->lock, flags); @@ -768,14 +768,14 @@ static void xilinx_vdma_issue_pending(struct dma_chan *dchan) } /** - * xilinx_vdma_complete_descriptor - Mark the active descriptor as complete + * xilinx_dma_complete_descriptor - Mark the active descriptor as complete * @chan : xilinx DMA channel * * CONTEXT: hardirq */ -static void xilinx_vdma_complete_descriptor(struct xilinx_vdma_chan *chan) +static void xilinx_dma_complete_descriptor(struct xilinx_dma_chan *chan) { - struct xilinx_vdma_tx_descriptor *desc, *next; + struct xilinx_dma_tx_descriptor *desc, *next; /* This function was invoked with lock held */ if (list_empty(&chan->active_list)) @@ -789,27 +789,27 @@ static void xilinx_vdma_complete_descriptor(struct xilinx_vdma_chan *chan) } /** - * xilinx_vdma_reset - Reset VDMA channel - * @chan: Driver specific VDMA channel + * xilinx_dma_reset - Reset DMA channel + * @chan: Driver specific DMA channel * * Return: '0' on success and failure value on error */ -static int xilinx_vdma_reset(struct xilinx_vdma_chan *chan) +static int xilinx_dma_reset(struct xilinx_dma_chan *chan) { int err; u32 tmp; - vdma_ctrl_set(chan, XILINX_VDMA_REG_DMACR, XILINX_VDMA_DMACR_RESET); + dma_ctrl_set(chan, XILINX_DMA_REG_DMACR, XILINX_DMA_DMACR_RESET); /* Wait for the hardware to finish reset */ - err = xilinx_vdma_poll_timeout(chan, XILINX_VDMA_REG_DMACR, tmp, - !(tmp & XILINX_VDMA_DMACR_RESET), 0, - XILINX_VDMA_LOOP_COUNT); + err = xilinx_dma_poll_timeout(chan, XILINX_DMA_REG_DMACR, tmp, + !(tmp & XILINX_DMA_DMACR_RESET), 0, + XILINX_DMA_LOOP_COUNT); if (err) { dev_err(chan->dev, "reset timeout, cr %x, sr %x\n", - vdma_ctrl_read(chan, XILINX_VDMA_REG_DMACR), - vdma_ctrl_read(chan, XILINX_VDMA_REG_DMASR)); + dma_ctrl_read(chan, XILINX_DMA_REG_DMACR), + dma_ctrl_read(chan, XILINX_DMA_REG_DMASR)); return -ETIMEDOUT; } @@ -819,48 +819,48 @@ static int xilinx_vdma_reset(struct xilinx_vdma_chan *chan) } /** - * xilinx_vdma_chan_reset - Reset VDMA channel and enable interrupts - * @chan: Driver specific VDMA channel + * xilinx_dma_chan_reset - Reset DMA channel and enable interrupts + * @chan: Driver specific DMA channel * * Return: '0' on success and failure value on error */ -static int xilinx_vdma_chan_reset(struct xilinx_vdma_chan *chan) +static int xilinx_dma_chan_reset(struct xilinx_dma_chan *chan) { int err; /* Reset VDMA */ - err = xilinx_vdma_reset(chan); + err = xilinx_dma_reset(chan); if (err) return err; /* Enable interrupts */ - vdma_ctrl_set(chan, XILINX_VDMA_REG_DMACR, - XILINX_VDMA_DMAXR_ALL_IRQ_MASK); + dma_ctrl_set(chan, XILINX_DMA_REG_DMACR, + XILINX_DMA_DMAXR_ALL_IRQ_MASK); return 0; } /** - * xilinx_vdma_irq_handler - VDMA Interrupt handler + * xilinx_dma_irq_handler - DMA Interrupt handler * @irq: IRQ number - * @data: Pointer to the Xilinx VDMA channel structure + * @data: Pointer to the Xilinx DMA channel structure * * Return: IRQ_HANDLED/IRQ_NONE */ -static irqreturn_t xilinx_vdma_irq_handler(int irq, void *data) +static irqreturn_t xilinx_dma_irq_handler(int irq, void *data) { - struct xilinx_vdma_chan *chan = data; + struct xilinx_dma_chan *chan = data; u32 status; /* Read the status and ack the interrupts. */ - status = vdma_ctrl_read(chan, XILINX_VDMA_REG_DMASR); - if (!(status & XILINX_VDMA_DMAXR_ALL_IRQ_MASK)) + status = dma_ctrl_read(chan, XILINX_DMA_REG_DMASR); + if (!(status & XILINX_DMA_DMAXR_ALL_IRQ_MASK)) return IRQ_NONE; - vdma_ctrl_write(chan, XILINX_VDMA_REG_DMASR, - status & XILINX_VDMA_DMAXR_ALL_IRQ_MASK); + dma_ctrl_write(chan, XILINX_DMA_REG_DMASR, + status & XILINX_DMA_DMAXR_ALL_IRQ_MASK); - if (status & XILINX_VDMA_DMASR_ERR_IRQ) { + if (status & XILINX_DMA_DMASR_ERR_IRQ) { /* * An error occurred. If C_FLUSH_ON_FSYNC is enabled and the * error is recoverable, ignore it. Otherwise flag the error. @@ -868,23 +868,23 @@ static irqreturn_t xilinx_vdma_irq_handler(int irq, void *data) * Only recoverable errors can be cleared in the DMASR register, * make sure not to write to other error bits to 1. */ - u32 errors = status & XILINX_VDMA_DMASR_ALL_ERR_MASK; + u32 errors = status & XILINX_DMA_DMASR_ALL_ERR_MASK; - vdma_ctrl_write(chan, XILINX_VDMA_REG_DMASR, - errors & XILINX_VDMA_DMASR_ERR_RECOVER_MASK); + dma_ctrl_write(chan, XILINX_DMA_REG_DMASR, + errors & XILINX_DMA_DMASR_ERR_RECOVER_MASK); if (!chan->flush_on_fsync || - (errors & ~XILINX_VDMA_DMASR_ERR_RECOVER_MASK)) { + (errors & ~XILINX_DMA_DMASR_ERR_RECOVER_MASK)) { dev_err(chan->dev, "Channel %p has errors %x, cdr %x tdr %x\n", chan, errors, - vdma_ctrl_read(chan, XILINX_VDMA_REG_CURDESC), - vdma_ctrl_read(chan, XILINX_VDMA_REG_TAILDESC)); + dma_ctrl_read(chan, XILINX_DMA_REG_CURDESC), + dma_ctrl_read(chan, XILINX_DMA_REG_TAILDESC)); chan->err = true; } } - if (status & XILINX_VDMA_DMASR_DLY_CNT_IRQ) { + if (status & XILINX_DMA_DMASR_DLY_CNT_IRQ) { /* * Device takes too long to do the transfer when user requires * responsiveness. @@ -892,9 +892,9 @@ static irqreturn_t xilinx_vdma_irq_handler(int irq, void *data) dev_dbg(chan->dev, "Inter-packet latency too long\n"); } - if (status & XILINX_VDMA_DMASR_FRM_CNT_IRQ) { + if (status & XILINX_DMA_DMASR_FRM_CNT_IRQ) { spin_lock(&chan->lock); - xilinx_vdma_complete_descriptor(chan); + xilinx_dma_complete_descriptor(chan); xilinx_vdma_start_transfer(chan); spin_unlock(&chan->lock); } @@ -908,11 +908,11 @@ static irqreturn_t xilinx_vdma_irq_handler(int irq, void *data) * @chan: Driver specific dma channel * @desc: dma transaction descriptor */ -static void append_desc_queue(struct xilinx_vdma_chan *chan, - struct xilinx_vdma_tx_descriptor *desc) +static void append_desc_queue(struct xilinx_dma_chan *chan, + struct xilinx_dma_tx_descriptor *desc) { struct xilinx_vdma_tx_segment *tail_segment; - struct xilinx_vdma_tx_descriptor *tail_desc; + struct xilinx_dma_tx_descriptor *tail_desc; if (list_empty(&chan->pending_list)) goto append; @@ -922,7 +922,7 @@ static void append_desc_queue(struct xilinx_vdma_chan *chan, * that already exists in memory. */ tail_desc = list_last_entry(&chan->pending_list, - struct xilinx_vdma_tx_descriptor, node); + struct xilinx_dma_tx_descriptor, node); tail_segment = list_last_entry(&tail_desc->segments, struct xilinx_vdma_tx_segment, node); tail_segment->hw.next_desc = (u32)desc->async_tx.phys; @@ -943,15 +943,15 @@ append: } /** - * xilinx_vdma_tx_submit - Submit DMA transaction + * xilinx_dma_tx_submit - Submit DMA transaction * @tx: Async transaction descriptor * * Return: cookie value on success and failure value on error */ -static dma_cookie_t xilinx_vdma_tx_submit(struct dma_async_tx_descriptor *tx) +static dma_cookie_t xilinx_dma_tx_submit(struct dma_async_tx_descriptor *tx) { - struct xilinx_vdma_tx_descriptor *desc = to_vdma_tx_descriptor(tx); - struct xilinx_vdma_chan *chan = to_xilinx_chan(tx->chan); + struct xilinx_dma_tx_descriptor *desc = to_dma_tx_descriptor(tx); + struct xilinx_dma_chan *chan = to_xilinx_chan(tx->chan); dma_cookie_t cookie; unsigned long flags; int err; @@ -961,7 +961,7 @@ static dma_cookie_t xilinx_vdma_tx_submit(struct dma_async_tx_descriptor *tx) * If reset fails, need to hard reset the system. * Channel is no longer functional */ - err = xilinx_vdma_chan_reset(chan); + err = xilinx_dma_chan_reset(chan); if (err < 0) return err; } @@ -992,8 +992,8 @@ xilinx_vdma_dma_prep_interleaved(struct dma_chan *dchan, struct dma_interleaved_template *xt, unsigned long flags) { - struct xilinx_vdma_chan *chan = to_xilinx_chan(dchan); - struct xilinx_vdma_tx_descriptor *desc; + struct xilinx_dma_chan *chan = to_xilinx_chan(dchan); + struct xilinx_dma_tx_descriptor *desc; struct xilinx_vdma_tx_segment *segment, *prev = NULL; struct xilinx_vdma_desc_hw *hw; @@ -1007,12 +1007,12 @@ xilinx_vdma_dma_prep_interleaved(struct dma_chan *dchan, return NULL; /* Allocate a transaction descriptor. */ - desc = xilinx_vdma_alloc_tx_descriptor(chan); + desc = xilinx_dma_alloc_tx_descriptor(chan); if (!desc) return NULL; dma_async_tx_descriptor_init(&desc->async_tx, &chan->common); - desc->async_tx.tx_submit = xilinx_vdma_tx_submit; + desc->async_tx.tx_submit = xilinx_dma_tx_submit; async_tx_ack(&desc->async_tx); /* Allocate the link descriptor from DMA pool */ @@ -1025,9 +1025,9 @@ xilinx_vdma_dma_prep_interleaved(struct dma_chan *dchan, hw->vsize = xt->numf; hw->hsize = xt->sgl[0].size; hw->stride = (xt->sgl[0].icg + xt->sgl[0].size) << - XILINX_VDMA_FRMDLY_STRIDE_STRIDE_SHIFT; + XILINX_DMA_FRMDLY_STRIDE_STRIDE_SHIFT; hw->stride |= chan->config.frm_dly << - XILINX_VDMA_FRMDLY_STRIDE_FRMDLY_SHIFT; + XILINX_DMA_FRMDLY_STRIDE_FRMDLY_SHIFT; if (xt->dir != DMA_MEM_TO_DEV) { if (chan->ext_addr) { @@ -1058,29 +1058,29 @@ xilinx_vdma_dma_prep_interleaved(struct dma_chan *dchan, return &desc->async_tx; error: - xilinx_vdma_free_tx_descriptor(chan, desc); + xilinx_dma_free_tx_descriptor(chan, desc); return NULL; } /** - * xilinx_vdma_terminate_all - Halt the channel and free descriptors - * @chan: Driver specific VDMA Channel pointer + * xilinx_dma_terminate_all - Halt the channel and free descriptors + * @chan: Driver specific DMA Channel pointer */ -static int xilinx_vdma_terminate_all(struct dma_chan *dchan) +static int xilinx_dma_terminate_all(struct dma_chan *dchan) { - struct xilinx_vdma_chan *chan = to_xilinx_chan(dchan); + struct xilinx_dma_chan *chan = to_xilinx_chan(dchan); /* Halt the DMA engine */ - xilinx_vdma_halt(chan); + xilinx_dma_halt(chan); /* Remove and free all of the descriptors in the lists */ - xilinx_vdma_free_descriptors(chan); + xilinx_dma_free_descriptors(chan); return 0; } /** - * xilinx_vdma_channel_set_config - Configure VDMA channel + * xilinx_dma_channel_set_config - Configure VDMA channel * Run-time configuration for Axi VDMA, supports: * . halt the channel * . configure interrupt coalescing and inter-packet delay threshold @@ -1095,13 +1095,13 @@ static int xilinx_vdma_terminate_all(struct dma_chan *dchan) int xilinx_vdma_channel_set_config(struct dma_chan *dchan, struct xilinx_vdma_config *cfg) { - struct xilinx_vdma_chan *chan = to_xilinx_chan(dchan); + struct xilinx_dma_chan *chan = to_xilinx_chan(dchan); u32 dmacr; if (cfg->reset) - return xilinx_vdma_chan_reset(chan); + return xilinx_dma_chan_reset(chan); - dmacr = vdma_ctrl_read(chan, XILINX_VDMA_REG_DMACR); + dmacr = dma_ctrl_read(chan, XILINX_DMA_REG_DMACR); chan->config.frm_dly = cfg->frm_dly; chan->config.park = cfg->park; @@ -1111,8 +1111,8 @@ int xilinx_vdma_channel_set_config(struct dma_chan *dchan, chan->config.master = cfg->master; if (cfg->gen_lock && chan->genlock) { - dmacr |= XILINX_VDMA_DMACR_GENLOCK_EN; - dmacr |= cfg->master << XILINX_VDMA_DMACR_MASTER_SHIFT; + dmacr |= XILINX_DMA_DMACR_GENLOCK_EN; + dmacr |= cfg->master << XILINX_DMA_DMACR_MASTER_SHIFT; } chan->config.frm_cnt_en = cfg->frm_cnt_en; @@ -1124,21 +1124,21 @@ int xilinx_vdma_channel_set_config(struct dma_chan *dchan, chan->config.coalesc = cfg->coalesc; chan->config.delay = cfg->delay; - if (cfg->coalesc <= XILINX_VDMA_DMACR_FRAME_COUNT_MAX) { - dmacr |= cfg->coalesc << XILINX_VDMA_DMACR_FRAME_COUNT_SHIFT; + if (cfg->coalesc <= XILINX_DMA_DMACR_FRAME_COUNT_MAX) { + dmacr |= cfg->coalesc << XILINX_DMA_DMACR_FRAME_COUNT_SHIFT; chan->config.coalesc = cfg->coalesc; } - if (cfg->delay <= XILINX_VDMA_DMACR_DELAY_MAX) { - dmacr |= cfg->delay << XILINX_VDMA_DMACR_DELAY_SHIFT; + if (cfg->delay <= XILINX_DMA_DMACR_DELAY_MAX) { + dmacr |= cfg->delay << XILINX_DMA_DMACR_DELAY_SHIFT; chan->config.delay = cfg->delay; } /* FSync Source selection */ - dmacr &= ~XILINX_VDMA_DMACR_FSYNCSRC_MASK; - dmacr |= cfg->ext_fsync << XILINX_VDMA_DMACR_FSYNCSRC_SHIFT; + dmacr &= ~XILINX_DMA_DMACR_FSYNCSRC_MASK; + dmacr |= cfg->ext_fsync << XILINX_DMA_DMACR_FSYNCSRC_SHIFT; - vdma_ctrl_write(chan, XILINX_VDMA_REG_DMACR, dmacr); + dma_ctrl_write(chan, XILINX_DMA_REG_DMACR, dmacr); return 0; } @@ -1149,14 +1149,14 @@ EXPORT_SYMBOL(xilinx_vdma_channel_set_config); */ /** - * xilinx_vdma_chan_remove - Per Channel remove function - * @chan: Driver specific VDMA channel + * xilinx_dma_chan_remove - Per Channel remove function + * @chan: Driver specific DMA channel */ -static void xilinx_vdma_chan_remove(struct xilinx_vdma_chan *chan) +static void xilinx_dma_chan_remove(struct xilinx_dma_chan *chan) { /* Disable all interrupts */ - vdma_ctrl_clr(chan, XILINX_VDMA_REG_DMACR, - XILINX_VDMA_DMAXR_ALL_IRQ_MASK); + dma_ctrl_clr(chan, XILINX_DMA_REG_DMACR, + XILINX_DMA_DMAXR_ALL_IRQ_MASK); if (chan->irq > 0) free_irq(chan->irq, chan); @@ -1167,7 +1167,7 @@ static void xilinx_vdma_chan_remove(struct xilinx_vdma_chan *chan) } /** - * xilinx_vdma_chan_probe - Per Channel Probing + * xilinx_dma_chan_probe - Per Channel Probing * It get channel features from the device tree entry and * initialize special channel handling routines * @@ -1176,10 +1176,10 @@ static void xilinx_vdma_chan_remove(struct xilinx_vdma_chan *chan) * * Return: '0' on success and failure value on error */ -static int xilinx_vdma_chan_probe(struct xilinx_vdma_device *xdev, +static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev, struct device_node *node) { - struct xilinx_vdma_chan *chan; + struct xilinx_dma_chan *chan; bool has_dre = false; u32 value, width; int err; @@ -1223,22 +1223,22 @@ static int xilinx_vdma_chan_probe(struct xilinx_vdma_device *xdev, chan->direction = DMA_MEM_TO_DEV; chan->id = 0; - chan->ctrl_offset = XILINX_VDMA_MM2S_CTRL_OFFSET; + chan->ctrl_offset = XILINX_DMA_MM2S_CTRL_OFFSET; chan->desc_offset = XILINX_VDMA_MM2S_DESC_OFFSET; - if (xdev->flush_on_fsync == XILINX_VDMA_FLUSH_BOTH || - xdev->flush_on_fsync == XILINX_VDMA_FLUSH_MM2S) + if (xdev->flush_on_fsync == XILINX_DMA_FLUSH_BOTH || + xdev->flush_on_fsync == XILINX_DMA_FLUSH_MM2S) chan->flush_on_fsync = true; } else if (of_device_is_compatible(node, "xlnx,axi-vdma-s2mm-channel")) { chan->direction = DMA_DEV_TO_MEM; chan->id = 1; - chan->ctrl_offset = XILINX_VDMA_S2MM_CTRL_OFFSET; + chan->ctrl_offset = XILINX_DMA_S2MM_CTRL_OFFSET; chan->desc_offset = XILINX_VDMA_S2MM_DESC_OFFSET; - if (xdev->flush_on_fsync == XILINX_VDMA_FLUSH_BOTH || - xdev->flush_on_fsync == XILINX_VDMA_FLUSH_S2MM) + if (xdev->flush_on_fsync == XILINX_DMA_FLUSH_BOTH || + xdev->flush_on_fsync == XILINX_DMA_FLUSH_S2MM) chan->flush_on_fsync = true; } else { dev_err(xdev->dev, "Invalid channel compatible node\n"); @@ -1247,15 +1247,15 @@ static int xilinx_vdma_chan_probe(struct xilinx_vdma_device *xdev, /* Request the interrupt */ chan->irq = irq_of_parse_and_map(node, 0); - err = request_irq(chan->irq, xilinx_vdma_irq_handler, IRQF_SHARED, - "xilinx-vdma-controller", chan); + err = request_irq(chan->irq, xilinx_dma_irq_handler, IRQF_SHARED, + "xilinx-dma-controller", chan); if (err) { dev_err(xdev->dev, "unable to request IRQ %d\n", chan->irq); return err; } /* Initialize the tasklet */ - tasklet_init(&chan->tasklet, xilinx_vdma_do_tasklet, + tasklet_init(&chan->tasklet, xilinx_dma_do_tasklet, (unsigned long)chan); /* @@ -1268,7 +1268,7 @@ static int xilinx_vdma_chan_probe(struct xilinx_vdma_device *xdev, xdev->chan[chan->id] = chan; /* Reset the channel */ - err = xilinx_vdma_chan_reset(chan); + err = xilinx_dma_chan_reset(chan); if (err < 0) { dev_err(xdev->dev, "Reset channel failed\n"); return err; @@ -1287,25 +1287,25 @@ static int xilinx_vdma_chan_probe(struct xilinx_vdma_device *xdev, static struct dma_chan *of_dma_xilinx_xlate(struct of_phandle_args *dma_spec, struct of_dma *ofdma) { - struct xilinx_vdma_device *xdev = ofdma->of_dma_data; + struct xilinx_dma_device *xdev = ofdma->of_dma_data; int chan_id = dma_spec->args[0]; - if (chan_id >= XILINX_VDMA_MAX_CHANS_PER_DEVICE) + if (chan_id >= XILINX_DMA_MAX_CHANS_PER_DEVICE) return NULL; return dma_get_slave_channel(&xdev->chan[chan_id]->common); } /** - * xilinx_vdma_probe - Driver probe function + * xilinx_dma_probe - Driver probe function * @pdev: Pointer to the platform_device structure * * Return: '0' on success and failure value on error */ -static int xilinx_vdma_probe(struct platform_device *pdev) +static int xilinx_dma_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; - struct xilinx_vdma_device *xdev; + struct xilinx_dma_device *xdev; struct device_node *child; struct resource *io; u32 num_frames, addr_width; @@ -1358,25 +1358,25 @@ static int xilinx_vdma_probe(struct platform_device *pdev) dma_cap_set(DMA_PRIVATE, xdev->common.cap_mask); xdev->common.device_alloc_chan_resources = - xilinx_vdma_alloc_chan_resources; + xilinx_dma_alloc_chan_resources; xdev->common.device_free_chan_resources = - xilinx_vdma_free_chan_resources; + xilinx_dma_free_chan_resources; xdev->common.device_prep_interleaved_dma = xilinx_vdma_dma_prep_interleaved; - xdev->common.device_terminate_all = xilinx_vdma_terminate_all; - xdev->common.device_tx_status = xilinx_vdma_tx_status; - xdev->common.device_issue_pending = xilinx_vdma_issue_pending; + xdev->common.device_terminate_all = xilinx_dma_terminate_all; + xdev->common.device_tx_status = xilinx_dma_tx_status; + xdev->common.device_issue_pending = xilinx_dma_issue_pending; platform_set_drvdata(pdev, xdev); /* Initialize the channels */ for_each_child_of_node(node, child) { - err = xilinx_vdma_chan_probe(xdev, child); + err = xilinx_dma_chan_probe(xdev, child); if (err < 0) goto error; } - for (i = 0; i < XILINX_VDMA_MAX_CHANS_PER_DEVICE; i++) + for (i = 0; i < XILINX_DMA_MAX_CHANS_PER_DEVICE; i++) if (xdev->chan[i]) xdev->chan[i]->num_frms = num_frames; @@ -1396,48 +1396,48 @@ static int xilinx_vdma_probe(struct platform_device *pdev) return 0; error: - for (i = 0; i < XILINX_VDMA_MAX_CHANS_PER_DEVICE; i++) + for (i = 0; i < XILINX_DMA_MAX_CHANS_PER_DEVICE; i++) if (xdev->chan[i]) - xilinx_vdma_chan_remove(xdev->chan[i]); + xilinx_dma_chan_remove(xdev->chan[i]); return err; } /** - * xilinx_vdma_remove - Driver remove function + * xilinx_dma_remove - Driver remove function * @pdev: Pointer to the platform_device structure * * Return: Always '0' */ -static int xilinx_vdma_remove(struct platform_device *pdev) +static int xilinx_dma_remove(struct platform_device *pdev) { - struct xilinx_vdma_device *xdev = platform_get_drvdata(pdev); + struct xilinx_dma_device *xdev = platform_get_drvdata(pdev); int i; of_dma_controller_free(pdev->dev.of_node); dma_async_device_unregister(&xdev->common); - for (i = 0; i < XILINX_VDMA_MAX_CHANS_PER_DEVICE; i++) + for (i = 0; i < XILINX_DMA_MAX_CHANS_PER_DEVICE; i++) if (xdev->chan[i]) - xilinx_vdma_chan_remove(xdev->chan[i]); + xilinx_dma_chan_remove(xdev->chan[i]); return 0; } -static const struct of_device_id xilinx_vdma_of_ids[] = { +static const struct of_device_id xilinx_dma_of_ids[] = { { .compatible = "xlnx,axi-vdma-1.00.a",}, {} }; -MODULE_DEVICE_TABLE(of, xilinx_vdma_of_ids); +MODULE_DEVICE_TABLE(of, xilinx_dma_of_ids); static struct platform_driver xilinx_vdma_driver = { .driver = { .name = "xilinx-vdma", - .of_match_table = xilinx_vdma_of_ids, + .of_match_table = xilinx_dma_of_ids, }, - .probe = xilinx_vdma_probe, - .remove = xilinx_vdma_remove, + .probe = xilinx_dma_probe, + .remove = xilinx_dma_remove, }; module_platform_driver(xilinx_vdma_driver); |
