From 623b4ac4bf9e767991c66e29b47dd4b19458fb42 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 3 Feb 2010 14:44:12 +0000 Subject: sh: fix Transfer Size calculation in both DMA drivers Both the original arch/sh/drivers/dma/dma-sh.c and the new SH dmaengine drivers do not take into account bits 3:2 of the Transfer Size field in the CHCR register, besides, bit-field defines set bit 2, but the mask only passes bits 1:0 through. TS_16BLK and TS_32BLK macros are bogus too. This patch fixes all these issues for sh7722 and sh7724, other CPUs stay unchanged and might need to be fixed too. Signed-off-by: Guennadi Liakhovetski Acked-by: Dan Williams Signed-off-by: Paul Mundt --- arch/sh/drivers/dma/dma-sh.c | 5 +- arch/sh/include/asm/dma-sh.h | 2 +- arch/sh/include/cpu-sh3/cpu/dma.h | 20 ++++--- arch/sh/include/cpu-sh4/cpu/dma-sh4a.h | 97 +++++++++++++++++++++++++--------- arch/sh/include/cpu-sh4/cpu/dma.h | 35 ++++++------ 5 files changed, 109 insertions(+), 50 deletions(-) (limited to 'arch/sh') diff --git a/arch/sh/drivers/dma/dma-sh.c b/arch/sh/drivers/dma/dma-sh.c index 37fb5b8bbc3f..31830cb0af89 100644 --- a/arch/sh/drivers/dma/dma-sh.c +++ b/arch/sh/drivers/dma/dma-sh.c @@ -52,11 +52,14 @@ static inline unsigned int get_dmte_irq(unsigned int chan) * * iterations to complete the transfer. */ +static unsigned int ts_shift[] = TS_SHIFT; static inline unsigned int calc_xmit_shift(struct dma_channel *chan) { u32 chcr = ctrl_inl(dma_base_addr[chan->chan] + CHCR); + int cnt = ((chcr & CHCR_TS_LOW_MASK) >> CHCR_TS_LOW_SHIFT) | + ((chcr & CHCR_TS_HIGH_MASK) >> CHCR_TS_HIGH_SHIFT); - return ts_shift[(chcr & CHCR_TS_MASK)>>CHCR_TS_SHIFT]; + return ts_shift[cnt]; } /* diff --git a/arch/sh/include/asm/dma-sh.h b/arch/sh/include/asm/dma-sh.h index 78eed3e0bdf5..01d2fc72551b 100644 --- a/arch/sh/include/asm/dma-sh.h +++ b/arch/sh/include/asm/dma-sh.h @@ -83,7 +83,7 @@ static int dmte_irq_map[] __maybe_unused = { * Define the default configuration for dual address memory-memory transfer. * The 0x400 value represents auto-request, external->external. */ -#define RS_DUAL (DM_INC | SM_INC | 0x400 | TS_32) +#define RS_DUAL (DM_INC | SM_INC | 0x400 | TS_INDEX2VAL(XMIT_SZ_32BIT)) /* DMA base address */ static u32 dma_base_addr[] __maybe_unused = { diff --git a/arch/sh/include/cpu-sh3/cpu/dma.h b/arch/sh/include/cpu-sh3/cpu/dma.h index 0ea15f3f2363..207811a7a650 100644 --- a/arch/sh/include/cpu-sh3/cpu/dma.h +++ b/arch/sh/include/cpu-sh3/cpu/dma.h @@ -20,8 +20,10 @@ #define TS_32 0x00000010 #define TS_128 0x00000018 -#define CHCR_TS_MASK 0x18 -#define CHCR_TS_SHIFT 3 +#define CHCR_TS_LOW_MASK 0x18 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0 +#define CHCR_TS_HIGH_SHIFT 0 #define DMAOR_INIT DMAOR_DME @@ -36,11 +38,13 @@ enum { XMIT_SZ_128BIT, }; -static unsigned int ts_shift[] __maybe_unused = { - [XMIT_SZ_8BIT] = 0, - [XMIT_SZ_16BIT] = 1, - [XMIT_SZ_32BIT] = 2, - [XMIT_SZ_128BIT] = 4, -}; +#define TS_SHIFT { \ + [XMIT_SZ_8BIT] = 0, \ + [XMIT_SZ_16BIT] = 1, \ + [XMIT_SZ_32BIT] = 2, \ + [XMIT_SZ_128BIT] = 4, \ +} + +#define TS_INDEX2VAL(i) (((i) & 3) << CHCR_TS_LOW_SHIFT) #endif /* __ASM_CPU_SH3_DMA_H */ diff --git a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h index c4ed660c14cf..cc1cf3e8f163 100644 --- a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h +++ b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h @@ -2,13 +2,26 @@ #define __ASM_SH_CPU_SH4_DMA_SH7780_H #if defined(CONFIG_CPU_SUBTYPE_SH7343) || \ - defined(CONFIG_CPU_SUBTYPE_SH7722) || \ defined(CONFIG_CPU_SUBTYPE_SH7730) #define DMTE0_IRQ 48 #define DMTE4_IRQ 76 #define DMAE0_IRQ 78 /* DMA Error IRQ*/ #define SH_DMAC_BASE0 0xFE008020 #define SH_DMARS_BASE 0xFE009000 +#define CHCR_TS_LOW_MASK 0x00000018 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0 +#define CHCR_TS_HIGH_SHIFT 0 +#elif defined(CONFIG_CPU_SUBTYPE_SH7722) +#define DMTE0_IRQ 48 +#define DMTE4_IRQ 76 +#define DMAE0_IRQ 78 /* DMA Error IRQ*/ +#define SH_DMAC_BASE0 0xFE008020 +#define SH_DMARS_BASE 0xFE009000 +#define CHCR_TS_LOW_MASK 0x00000018 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0x00300000 +#define CHCR_TS_HIGH_SHIFT 20 #elif defined(CONFIG_CPU_SUBTYPE_SH7763) || \ defined(CONFIG_CPU_SUBTYPE_SH7764) #define DMTE0_IRQ 34 @@ -16,8 +29,11 @@ #define DMAE0_IRQ 38 #define SH_DMAC_BASE0 0xFF608020 #define SH_DMARS_BASE 0xFF609000 -#elif defined(CONFIG_CPU_SUBTYPE_SH7723) || \ - defined(CONFIG_CPU_SUBTYPE_SH7724) +#define CHCR_TS_LOW_MASK 0x00000018 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0 +#define CHCR_TS_HIGH_SHIFT 0 +#elif defined(CONFIG_CPU_SUBTYPE_SH7723) #define DMTE0_IRQ 48 /* DMAC0A*/ #define DMTE4_IRQ 76 /* DMAC0B */ #define DMTE6_IRQ 40 @@ -30,6 +46,27 @@ #define SH_DMAC_BASE0 0xFE008020 #define SH_DMAC_BASE1 0xFDC08020 #define SH_DMARS_BASE 0xFDC09000 +#define CHCR_TS_LOW_MASK 0x00000018 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0 +#define CHCR_TS_HIGH_SHIFT 0 +#elif defined(CONFIG_CPU_SUBTYPE_SH7724) +#define DMTE0_IRQ 48 /* DMAC0A*/ +#define DMTE4_IRQ 76 /* DMAC0B */ +#define DMTE6_IRQ 40 +#define DMTE8_IRQ 42 /* DMAC1A */ +#define DMTE9_IRQ 43 +#define DMTE10_IRQ 72 /* DMAC1B */ +#define DMTE11_IRQ 73 +#define DMAE0_IRQ 78 /* DMA Error IRQ*/ +#define DMAE1_IRQ 74 /* DMA Error IRQ*/ +#define SH_DMAC_BASE0 0xFE008020 +#define SH_DMAC_BASE1 0xFDC08020 +#define SH_DMARS_BASE 0xFDC09000 +#define CHCR_TS_LOW_MASK 0x00000018 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0x00600000 +#define CHCR_TS_HIGH_SHIFT 21 #elif defined(CONFIG_CPU_SUBTYPE_SH7780) #define DMTE0_IRQ 34 #define DMTE4_IRQ 44 @@ -42,6 +79,10 @@ #define SH_DMAC_BASE0 0xFC808020 #define SH_DMAC_BASE1 0xFC818020 #define SH_DMARS_BASE 0xFC809000 +#define CHCR_TS_LOW_MASK 0x00000018 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0 +#define CHCR_TS_HIGH_SHIFT 0 #else /* SH7785 */ #define DMTE0_IRQ 33 #define DMTE4_IRQ 37 @@ -55,17 +96,16 @@ #define SH_DMAC_BASE0 0xFC808020 #define SH_DMAC_BASE1 0xFCC08020 #define SH_DMARS_BASE 0xFC809000 +#define CHCR_TS_LOW_MASK 0x00000018 +#define CHCR_TS_LOW_SHIFT 3 +#define CHCR_TS_HIGH_MASK 0 +#define CHCR_TS_HIGH_SHIFT 0 #endif -#define REQ_HE 0x000000C0 -#define REQ_H 0x00000080 -#define REQ_LE 0x00000040 -#define TM_BURST 0x0000020 -#define TS_8 0x00000000 -#define TS_16 0x00000008 -#define TS_32 0x00000010 -#define TS_16BLK 0x00000018 -#define TS_32BLK 0x00100000 +#define REQ_HE 0x000000C0 +#define REQ_H 0x00000080 +#define REQ_LE 0x00000040 +#define TM_BURST 0x00000020 /* * The SuperH DMAC supports a number of transmit sizes, we list them here, @@ -74,22 +114,31 @@ * Defaults to a 64-bit transfer size. */ enum { - XMIT_SZ_8BIT, - XMIT_SZ_16BIT, - XMIT_SZ_32BIT, - XMIT_SZ_128BIT, - XMIT_SZ_256BIT, + XMIT_SZ_8BIT = 0, + XMIT_SZ_16BIT = 1, + XMIT_SZ_32BIT = 2, + XMIT_SZ_64BIT = 7, + XMIT_SZ_128BIT = 3, + XMIT_SZ_256BIT = 4, + XMIT_SZ_128BIT_BLK = 0xb, + XMIT_SZ_256BIT_BLK = 0xc, }; /* * The DMA count is defined as the number of bytes to transfer. */ -static unsigned int ts_shift[] __maybe_unused = { - [XMIT_SZ_8BIT] = 0, - [XMIT_SZ_16BIT] = 1, - [XMIT_SZ_32BIT] = 2, - [XMIT_SZ_128BIT] = 4, - [XMIT_SZ_256BIT] = 5, -}; +#define TS_SHIFT { \ + [XMIT_SZ_8BIT] = 0, \ + [XMIT_SZ_16BIT] = 1, \ + [XMIT_SZ_32BIT] = 2, \ + [XMIT_SZ_64BIT] = 3, \ + [XMIT_SZ_128BIT] = 4, \ + [XMIT_SZ_256BIT] = 5, \ + [XMIT_SZ_128BIT_BLK] = 4, \ + [XMIT_SZ_256BIT_BLK] = 5, \ +} + +#define TS_INDEX2VAL(i) ((((i) & 3) << CHCR_TS_LOW_SHIFT) | \ + ((((i) >> 2) & 3) << CHCR_TS_HIGH_SHIFT)) #endif /* __ASM_SH_CPU_SH4_DMA_SH7780_H */ diff --git a/arch/sh/include/cpu-sh4/cpu/dma.h b/arch/sh/include/cpu-sh4/cpu/dma.h index bcb30246e85c..114a369705bc 100644 --- a/arch/sh/include/cpu-sh4/cpu/dma.h +++ b/arch/sh/include/cpu-sh4/cpu/dma.h @@ -6,8 +6,6 @@ #ifdef CONFIG_CPU_SH4A #define DMAOR_INIT (DMAOR_DME) -#define CHCR_TS_MASK 0x18 -#define CHCR_TS_SHIFT 3 #include #else /* CONFIG_CPU_SH4A */ @@ -29,8 +27,10 @@ #define TS_32 0x00000030 #define TS_64 0x00000000 -#define CHCR_TS_MASK 0x70 -#define CHCR_TS_SHIFT 4 +#define CHCR_TS_LOW_MASK 0x70 +#define CHCR_TS_LOW_SHIFT 4 +#define CHCR_TS_HIGH_MASK 0 +#define CHCR_TS_HIGH_SHIFT 0 #define DMAOR_COD 0x00000008 @@ -41,23 +41,26 @@ * Defaults to a 64-bit transfer size. */ enum { - XMIT_SZ_64BIT, - XMIT_SZ_8BIT, - XMIT_SZ_16BIT, - XMIT_SZ_32BIT, - XMIT_SZ_256BIT, + XMIT_SZ_8BIT = 1, + XMIT_SZ_16BIT = 2, + XMIT_SZ_32BIT = 3, + XMIT_SZ_64BIT = 0, + XMIT_SZ_256BIT = 4, }; /* * The DMA count is defined as the number of bytes to transfer. */ -static unsigned int ts_shift[] __maybe_unused = { - [XMIT_SZ_64BIT] = 3, - [XMIT_SZ_8BIT] = 0, - [XMIT_SZ_16BIT] = 1, - [XMIT_SZ_32BIT] = 2, - [XMIT_SZ_256BIT] = 5, -}; +#define TS_SHIFT { \ + [XMIT_SZ_8BIT] = 0, \ + [XMIT_SZ_16BIT] = 1, \ + [XMIT_SZ_32BIT] = 2, \ + [XMIT_SZ_64BIT] = 3, \ + [XMIT_SZ_256BIT] = 5, \ +} + +#define TS_INDEX2VAL(i) (((i) & 7) << CHCR_TS_LOW_SHIFT) + #endif #endif /* __ASM_CPU_SH4_DMA_H */ -- cgit v1.2.1