diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-davinci/devices.c | 8 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/dm355.c | 41 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/dm644x.c | 41 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/dm646x.c | 46 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/dma.c | 811 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/edma.h | 9 |
6 files changed, 635 insertions, 321 deletions
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c index de16f347566a..7a2f8ae89be2 100644 --- a/arch/arm/mach-davinci/devices.c +++ b/arch/arm/mach-davinci/devices.c @@ -82,10 +82,10 @@ static struct resource mmcsd0_resources[] = { }, /* DMA channels: RX, then TX */ { - .start = DAVINCI_DMA_MMCRXEVT, + .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT), .flags = IORESOURCE_DMA, }, { - .start = DAVINCI_DMA_MMCTXEVT, + .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT), .flags = IORESOURCE_DMA, }, }; @@ -119,10 +119,10 @@ static struct resource mmcsd1_resources[] = { }, /* DMA channels: RX, then TX */ { - .start = 30, /* rx */ + .start = EDMA_CTLR_CHAN(0, 30), /* rx */ .flags = IORESOURCE_DMA, }, { - .start = 31, /* tx */ + .start = EDMA_CTLR_CHAN(0, 31), /* tx */ .flags = IORESOURCE_DMA, }, }; diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c index baaaf328de2e..373f0c4003a5 100644 --- a/arch/arm/mach-davinci/dm355.c +++ b/arch/arm/mach-davinci/dm355.c @@ -558,17 +558,38 @@ static const s8 dma_chan_dm355_no_event[] = { -1 }; -static struct edma_soc_info dm355_edma_info = { - .n_channel = 64, - .n_region = 4, - .n_slot = 128, - .n_tc = 2, - .noevent = dma_chan_dm355_no_event, +static const s8 +queue_tc_mapping[][2] = { + /* {event queue no, TC no} */ + {0, 0}, + {1, 1}, + {-1, -1}, +}; + +static const s8 +queue_priority_mapping[][2] = { + /* {event queue no, Priority} */ + {0, 3}, + {1, 7}, + {-1, -1}, +}; + +static struct edma_soc_info dm355_edma_info[] = { + { + .n_channel = 64, + .n_region = 4, + .n_slot = 128, + .n_tc = 2, + .n_cc = 1, + .noevent = dma_chan_dm355_no_event, + .queue_tc_mapping = queue_tc_mapping, + .queue_priority_mapping = queue_priority_mapping, + }, }; static struct resource edma_resources[] = { { - .name = "edma_cc", + .name = "edma_cc0", .start = 0x01c00000, .end = 0x01c00000 + SZ_64K - 1, .flags = IORESOURCE_MEM, @@ -586,10 +607,12 @@ static struct resource edma_resources[] = { .flags = IORESOURCE_MEM, }, { + .name = "edma0", .start = IRQ_CCINT0, .flags = IORESOURCE_IRQ, }, { + .name = "edma0_err", .start = IRQ_CCERRINT, .flags = IORESOURCE_IRQ, }, @@ -598,8 +621,8 @@ static struct resource edma_resources[] = { static struct platform_device dm355_edma_device = { .name = "edma", - .id = -1, - .dev.platform_data = &dm355_edma_info, + .id = 0, + .dev.platform_data = dm355_edma_info, .num_resources = ARRAY_SIZE(edma_resources), .resource = edma_resources, }; diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c index fb5449b3c97b..d145c0cbfe6a 100644 --- a/arch/arm/mach-davinci/dm644x.c +++ b/arch/arm/mach-davinci/dm644x.c @@ -484,17 +484,38 @@ static const s8 dma_chan_dm644x_no_event[] = { -1 }; -static struct edma_soc_info dm644x_edma_info = { - .n_channel = 64, - .n_region = 4, - .n_slot = 128, - .n_tc = 2, - .noevent = dma_chan_dm644x_no_event, +static const s8 +queue_tc_mapping[][2] = { + /* {event queue no, TC no} */ + {0, 0}, + {1, 1}, + {-1, -1}, +}; + +static const s8 +queue_priority_mapping[][2] = { + /* {event queue no, Priority} */ + {0, 3}, + {1, 7}, + {-1, -1}, +}; + +static struct edma_soc_info dm644x_edma_info[] = { + { + .n_channel = 64, + .n_region = 4, + .n_slot = 128, + .n_tc = 2, + .n_cc = 1, + .noevent = dma_chan_dm644x_no_event, + .queue_tc_mapping = queue_tc_mapping, + .queue_priority_mapping = queue_priority_mapping, + }, }; static struct resource edma_resources[] = { { - .name = "edma_cc", + .name = "edma_cc0", .start = 0x01c00000, .end = 0x01c00000 + SZ_64K - 1, .flags = IORESOURCE_MEM, @@ -512,10 +533,12 @@ static struct resource edma_resources[] = { .flags = IORESOURCE_MEM, }, { + .name = "edma0", .start = IRQ_CCINT0, .flags = IORESOURCE_IRQ, }, { + .name = "edma0_err", .start = IRQ_CCERRINT, .flags = IORESOURCE_IRQ, }, @@ -524,8 +547,8 @@ static struct resource edma_resources[] = { static struct platform_device dm644x_edma_device = { .name = "edma", - .id = -1, - .dev.platform_data = &dm644x_edma_info, + .id = 0, + .dev.platform_data = dm644x_edma_info, .num_resources = ARRAY_SIZE(edma_resources), .resource = edma_resources, }; diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c index 334f0711e0f5..e2410738327c 100644 --- a/arch/arm/mach-davinci/dm646x.c +++ b/arch/arm/mach-davinci/dm646x.c @@ -451,17 +451,43 @@ static const s8 dma_chan_dm646x_no_event[] = { -1 }; -static struct edma_soc_info dm646x_edma_info = { - .n_channel = 64, - .n_region = 6, /* 0-1, 4-7 */ - .n_slot = 512, - .n_tc = 4, - .noevent = dma_chan_dm646x_no_event, +/* Four Transfer Controllers on DM646x */ +static const s8 +dm646x_queue_tc_mapping[][2] = { + /* {event queue no, TC no} */ + {0, 0}, + {1, 1}, + {2, 2}, + {3, 3}, + {-1, -1}, +}; + +static const s8 +dm646x_queue_priority_mapping[][2] = { + /* {event queue no, Priority} */ + {0, 4}, + {1, 0}, + {2, 5}, + {3, 1}, + {-1, -1}, +}; + +static struct edma_soc_info dm646x_edma_info[] = { + { + .n_channel = 64, + .n_region = 6, /* 0-1, 4-7 */ + .n_slot = 512, + .n_tc = 4, + .n_cc = 1, + .noevent = dma_chan_dm646x_no_event, + .queue_tc_mapping = dm646x_queue_tc_mapping, + .queue_priority_mapping = dm646x_queue_priority_mapping, + }, }; static struct resource edma_resources[] = { { - .name = "edma_cc", + .name = "edma_cc0", .start = 0x01c00000, .end = 0x01c00000 + SZ_64K - 1, .flags = IORESOURCE_MEM, @@ -491,10 +517,12 @@ static struct resource edma_resources[] = { .flags = IORESOURCE_MEM, }, { + .name = "edma0", .start = IRQ_CCINT0, .flags = IORESOURCE_IRQ, }, { + .name = "edma0_err", .start = IRQ_CCERRINT, .flags = IORESOURCE_IRQ, }, @@ -503,8 +531,8 @@ static struct resource edma_resources[] = { static struct platform_device dm646x_edma_device = { .name = "edma", - .id = -1, - .dev.platform_data = &dm646x_edma_info, + .id = 0, + .dev.platform_data = dm646x_edma_info, .num_resources = ARRAY_SIZE(edma_resources), .resource = edma_resources, }; diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c index 15e9eb158bb7..5908f7717b29 100644 --- a/arch/arm/mach-davinci/dma.c +++ b/arch/arm/mach-davinci/dma.c @@ -100,132 +100,157 @@ #define EDMA_SHADOW0 0x2000 /* 4 regions shadowing global channels */ #define EDMA_PARM 0x4000 /* 128 param entries */ -#define DAVINCI_DMA_3PCC_BASE 0x01C00000 - #define PARM_OFFSET(param_no) (EDMA_PARM + ((param_no) << 5)) +#define EDMA_DCHMAP 0x0100 /* 64 registers */ +#define CHMAP_EXIST BIT(24) + #define EDMA_MAX_DMACH 64 #define EDMA_MAX_PARAMENTRY 512 -#define EDMA_MAX_EVQUE 2 /* FIXME too small */ +#define EDMA_MAX_CC 2 /*****************************************************************************/ -static void __iomem *edmacc_regs_base; +static void __iomem *edmacc_regs_base[EDMA_MAX_CC]; -static inline unsigned int edma_read(int offset) +static inline unsigned int edma_read(unsigned ctlr, int offset) { - return (unsigned int)__raw_readl(edmacc_regs_base + offset); + return (unsigned int)__raw_readl(edmacc_regs_base[ctlr] + offset); } -static inline void edma_write(int offset, int val) +static inline void edma_write(unsigned ctlr, int offset, int val) { - __raw_writel(val, edmacc_regs_base + offset); + __raw_writel(val, edmacc_regs_base[ctlr] + offset); } -static inline void edma_modify(int offset, unsigned and, unsigned or) +static inline void edma_modify(unsigned ctlr, int offset, unsigned and, + unsigned or) { - unsigned val = edma_read(offset); + unsigned val = edma_read(ctlr, offset); val &= and; val |= or; - edma_write(offset, val); + edma_write(ctlr, offset, val); } -static inline void edma_and(int offset, unsigned and) +static inline void edma_and(unsigned ctlr, int offset, unsigned and) { - unsigned val = edma_read(offset); + unsigned val = edma_read(ctlr, offset); val &= and; - edma_write(offset, val); + edma_write(ctlr, offset, val); } -static inline void edma_or(int offset, unsigned or) +static inline void edma_or(unsigned ctlr, int offset, unsigned or) { - unsigned val = edma_read(offset); + unsigned val = edma_read(ctlr, offset); val |= or; - edma_write(offset, val); + edma_write(ctlr, offset, val); } -static inline unsigned int edma_read_array(int offset, int i) +static inline unsigned int edma_read_array(unsigned ctlr, int offset, int i) { - return edma_read(offset + (i << 2)); + return edma_read(ctlr, offset + (i << 2)); } -static inline void edma_write_array(int offset, int i, unsigned val) +static inline void edma_write_array(unsigned ctlr, int offset, int i, + unsigned val) { - edma_write(offset + (i << 2), val); + edma_write(ctlr, offset + (i << 2), val); } -static inline void edma_modify_array(int offset, int i, +static inline void edma_modify_array(unsigned ctlr, int offset, int i, unsigned and, unsigned or) { - edma_modify(offset + (i << 2), and, or); + edma_modify(ctlr, offset + (i << 2), and, or); } -static inline void edma_or_array(int offset, int i, unsigned or) +static inline void edma_or_array(unsigned ctlr, int offset, int i, unsigned or) { - edma_or(offset + (i << 2), or); + edma_or(ctlr, offset + (i << 2), or); } -static inline void edma_or_array2(int offset, int i, int j, unsigned or) +static inline void edma_or_array2(unsigned ctlr, int offset, int i, int j, + unsigned or) { - edma_or(offset + ((i*2 + j) << 2), or); + edma_or(ctlr, offset + ((i*2 + j) << 2), or); } -static inline void edma_write_array2(int offset, int i, int j, unsigned val) +static inline void edma_write_array2(unsigned ctlr, int offset, int i, int j, + unsigned val) { - edma_write(offset + ((i*2 + j) << 2), val); + edma_write(ctlr, offset + ((i*2 + j) << 2), val); } -static inline unsigned int edma_shadow0_read(int offset) +static inline unsigned int edma_shadow0_read(unsigned ctlr, int offset) { - return edma_read(EDMA_SHADOW0 + offset); + return edma_read(ctlr, EDMA_SHADOW0 + offset); } -static inline unsigned int edma_shadow0_read_array(int offset, int i) +static inline unsigned int edma_shadow0_read_array(unsigned ctlr, int offset, + int i) { - return edma_read(EDMA_SHADOW0 + offset + (i << 2)); + return edma_read(ctlr, EDMA_SHADOW0 + offset + (i << 2)); } -static inline void edma_shadow0_write(int offset, unsigned val) +static inline void edma_shadow0_write(unsigned ctlr, int offset, unsigned val) { - edma_write(EDMA_SHADOW0 + offset, val); + edma_write(ctlr, EDMA_SHADOW0 + offset, val); } -static inline void edma_shadow0_write_array(int offset, int i, unsigned val) +static inline void edma_shadow0_write_array(unsigned ctlr, int offset, int i, + unsigned val) { - edma_write(EDMA_SHADOW0 + offset + (i << 2), val); + edma_write(ctlr, EDMA_SHADOW0 + offset + (i << 2), val); } -static inline unsigned int edma_parm_read(int offset, int param_no) +static inline unsigned int edma_parm_read(unsigned ctlr, int offset, + int param_no) { - return edma_read(EDMA_PARM + offset + (param_no << 5)); + return edma_read(ctlr, EDMA_PARM + offset + (param_no << 5)); } -static inline void edma_parm_write(int offset, int param_no, unsigned val) +static inline void edma_parm_write(unsigned ctlr, int offset, int param_no, + unsigned val) { - edma_write(EDMA_PARM + offset + (param_no << 5), val); + edma_write(ctlr, EDMA_PARM + offset + (param_no << 5), val); } -static inline void edma_parm_modify(int offset, int param_no, +static inline void edma_parm_modify(unsigned ctlr, int offset, int param_no, unsigned and, unsigned or) { - edma_modify(EDMA_PARM + offset + (param_no << 5), and, or); + edma_modify(ctlr, EDMA_PARM + offset + (param_no << 5), and, or); } -static inline void edma_parm_and(int offset, int param_no, unsigned and) +static inline void edma_parm_and(unsigned ctlr, int offset, int param_no, + unsigned and) { - edma_and(EDMA_PARM + offset + (param_no << 5), and); + edma_and(ctlr, EDMA_PARM + offset + (param_no << 5), and); } -static inline void edma_parm_or(int offset, int param_no, unsigned or) +static inline void edma_parm_or(unsigned ctlr, int offset, int param_no, + unsigned or) { - edma_or(EDMA_PARM + offset + (param_no << 5), or); + edma_or(ctlr, EDMA_PARM + offset + (param_no << 5), or); } /*****************************************************************************/ /* actual number of DMA channels and slots on this silicon */ -static unsigned num_channels; -static unsigned num_slots; +struct edma { + /* how many dma resources of each type */ + unsigned num_channels; + unsigned num_region; + unsigned num_slots; + unsigned num_tc; + unsigned num_cc; + + /* list of channels with no even trigger; terminated by "-1" */ + const s8 *noevent; + + /* The edma_inuse bit for each PaRAM slot is clear unless the + * channel is in use ... by ARM or DSP, for QDMA, or whatever. + */ + DECLARE_BITMAP(edma_inuse, EDMA_MAX_PARAMENTRY); -static struct dma_interrupt_data { - void (*callback)(unsigned channel, unsigned short ch_status, - void *data); - void *data; -} intr_data[EDMA_MAX_DMACH]; + /* The edma_noevent bit for each channel is clear unless + * it doesn't trigger DMA events on this platform. It uses a + * bit of SOC-specific initialization code. + */ + DECLARE_BITMAP(edma_noevent, EDMA_MAX_DMACH); -/* The edma_inuse bit for each PaRAM slot is clear unless the - * channel is in use ... by ARM or DSP, for QDMA, or whatever. - */ -static DECLARE_BITMAP(edma_inuse, EDMA_MAX_PARAMENTRY); + unsigned irq_res_start; + unsigned irq_res_end; -/* The edma_noevent bit for each channel is clear unless - * it doesn't trigger DMA events on this platform. It uses a - * bit of SOC-specific initialization code. - */ -static DECLARE_BITMAP(edma_noevent, EDMA_MAX_DMACH); + struct dma_interrupt_data { + void (*callback)(unsigned channel, unsigned short ch_status, + void *data); + void *data; + } intr_data[EDMA_MAX_DMACH]; +}; + +static struct edma *edma_info[EDMA_MAX_CC]; /* dummy param set used to (re)initialize parameter RAM slots */ static const struct edmacc_param dummy_paramset = { @@ -233,25 +258,10 @@ static const struct edmacc_param dummy_paramset = { .ccnt = 1, }; -static const int __initconst -queue_tc_mapping[EDMA_MAX_EVQUE + 1][2] = { -/* {event queue no, TC no} */ - {0, 0}, - {1, 1}, - {-1, -1} -}; - -static const int __initconst -queue_priority_mapping[EDMA_MAX_EVQUE + 1][2] = { - /* {event queue no, Priority} */ - {0, 3}, - {1, 7}, - {-1, -1} -}; - /*****************************************************************************/ -static void map_dmach_queue(unsigned ch_no, enum dma_event_q queue_no) +static void map_dmach_queue(unsigned ctlr, unsigned ch_no, + enum dma_event_q queue_no) { int bit = (ch_no & 0x7) * 4; @@ -260,20 +270,40 @@ static void map_dmach_queue(unsigned ch_no, enum dma_event_q queue_no) queue_no = EVENTQ_1; queue_no &= 7; - edma_modify_array(EDMA_DMAQNUM, (ch_no >> 3), + edma_modify_array(ctlr, EDMA_DMAQNUM, (ch_no >> 3), ~(0x7 << bit), queue_no << bit); } -static void __init map_queue_tc(int queue_no, int tc_no) +static void __init map_queue_tc(unsigned ctlr, int queue_no, int tc_no) { int bit = queue_no * 4; - edma_modify(EDMA_QUETCMAP, ~(0x7 << bit), ((tc_no & 0x7) << bit)); + edma_modify(ctlr, EDMA_QUETCMAP, ~(0x7 << bit), ((tc_no & 0x7) << bit)); } -static void __init assign_priority_to_queue(int queue_no, int priority) +static void __init assign_priority_to_queue(unsigned ctlr, int queue_no, + int priority) { int bit = queue_no * 4; - edma_modify(EDMA_QUEPRI, ~(0x7 << bit), ((priority & 0x7) << bit)); + edma_modify(ctlr, EDMA_QUEPRI, ~(0x7 << bit), + ((priority & 0x7) << bit)); +} + +/** + * map_dmach_param - Maps channel number to param entry number + * + * This maps the dma channel number to param entry numberter. In + * other words using the DMA channel mapping registers a param entry + * can be mapped to any channel + * + * Callers are responsible for ensuring the channel mapping logic is + * included in that particular EDMA variant (Eg : dm646x) + * + */ +static void __init map_dmach_param(unsigned ctlr) +{ + int i; + for (i = 0; i < EDMA_MAX_DMACH; i++) + edma_write_array(ctlr, EDMA_DCHMAP , i , (i << 5)); } static inline void @@ -281,22 +311,39 @@ setup_dma_interrupt(unsigned lch, void (*callback)(unsigned channel, u16 ch_status, void *data), void *data) { + unsigned ctlr; + + ctlr = EDMA_CTLR(lch); + lch = EDMA_CHAN_SLOT(lch); + if (!callback) { - edma_shadow0_write_array(SH_IECR, lch >> 5, + edma_shadow0_write_array(ctlr, SH_IECR, lch >> 5, (1 << (lch & 0x1f))); } - intr_data[lch].callback = callback; - intr_data[lch].data = data; + edma_info[ctlr]->intr_data[lch].callback = callback; + edma_info[ctlr]->intr_data[lch].data = data; if (callback) { - edma_shadow0_write_array(SH_ICR, lch >> 5, + edma_shadow0_write_array(ctlr, SH_ICR, lch >> 5, (1 << (lch & 0x1f))); - edma_shadow0_write_array(SH_IESR, lch >> 5, + edma_shadow0_write_array(ctlr, SH_IESR, lch >> 5, (1 << (lch & 0x1f))); } } +static int irq2ctlr(int irq) +{ + if (irq >= edma_info[0]->irq_res_start && + irq <= edma_info[0]->irq_res_end) + return 0; + else if (irq >= edma_info[1]->irq_res_start && + irq <= edma_info[1]->irq_res_end) + return 1; + + return -1; +} + /****************************************************************************** * * DMA interrupt handler @@ -305,32 +352,39 @@ setup_dma_interrupt(unsigned lch, static irqreturn_t dma_irq_handler(int irq, void *data) { int i; + unsigned ctlr; unsigned int cnt = 0; + ctlr = irq2ctlr(irq); + dev_dbg(data, "dma_irq_handler\n"); - if ((edma_shadow0_read_array(SH_IPR, 0) == 0) - && (edma_shadow0_read_array(SH_IPR, 1) == 0)) + if ((edma_shadow0_read_array(ctlr, SH_IPR, 0) == 0) + && (edma_shadow0_read_array(ctlr, SH_IPR, 1) == 0)) return IRQ_NONE; while (1) { int j; - if (edma_shadow0_read_array(SH_IPR, 0)) + if (edma_shadow0_read_array(ctlr, SH_IPR, 0)) j = 0; - else if (edma_shadow0_read_array(SH_IPR, 1)) + else if (edma_shadow0_read_array(ctlr, SH_IPR, 1)) j = 1; else break; dev_dbg(data, "IPR%d %08x\n", j, - edma_shadow0_read_array(SH_IPR, j)); + edma_shadow0_read_array(ctlr, SH_IPR, j)); for (i = 0; i < 32; i++) { int k = (j << 5) + i; - if (edma_shadow0_read_array(SH_IPR, j) & (1 << i)) { + if (edma_shadow0_read_array(ctlr, SH_IPR, j) & + (1 << i)) { /* Clear the corresponding IPR bits */ - edma_shadow0_write_array(SH_ICR, j, (1 << i)); - if (intr_data[k].callback) { - intr_data[k].callback(k, DMA_COMPLETE, - intr_data[k].data); + edma_shadow0_write_array(ctlr, SH_ICR, j, + (1 << i)); + if (edma_info[ctlr]->intr_data[k].callback) { + edma_info[ctlr]->intr_data[k].callback( + k, DMA_COMPLETE, + edma_info[ctlr]->intr_data[k]. + data); } } } @@ -338,7 +392,7 @@ static irqreturn_t dma_irq_handler(int irq, void *data) if (cnt > 10) break; } - edma_shadow0_write(SH_IEVAL, 1); + edma_shadow0_write(ctlr, SH_IEVAL, 1); return IRQ_HANDLED; } @@ -350,78 +404,87 @@ static irqreturn_t dma_irq_handler(int irq, void *data) static irqreturn_t dma_ccerr_handler(int irq, void *data) { int i; + unsigned ctlr; unsigned int cnt = 0; + ctlr = irq2ctlr(irq); + dev_dbg(data, "dma_ccerr_handler\n"); - if ((edma_read_array(EDMA_EMR, 0) == 0) && - (edma_read_array(EDMA_EMR, 1) == 0) && - (edma_read(EDMA_QEMR) == 0) && (edma_read(EDMA_CCERR) == 0)) + if ((edma_read_array(ctlr, EDMA_EMR, 0) == 0) && + (edma_read_array(ctlr, EDMA_EMR, 1) == 0) && + (edma_read(ctlr, EDMA_QEMR) == 0) && + (edma_read(ctlr, EDMA_CCERR) == 0)) return IRQ_NONE; while (1) { int j = -1; - if (edma_read_array(EDMA_EMR, 0)) + if (edma_read_array(ctlr, EDMA_EMR, 0)) j = 0; - else if (edma_read_array(EDMA_EMR, 1)) + else if (edma_read_array(ctlr, EDMA_EMR, 1)) j = 1; if (j >= 0) { dev_dbg(data, "EMR%d %08x\n", j, - edma_read_array(EDMA_EMR, j)); + edma_read_array(ctlr, EDMA_EMR, j)); for (i = 0; i < 32; i++) { int k = (j << 5) + i; - if (edma_read_array(EDMA_EMR, j) & (1 << i)) { + if (edma_read_array(ctlr, EDMA_EMR, j) & + (1 << i)) { /* Clear the corresponding EMR bits */ - edma_write_array(EDMA_EMCR, j, 1 << i); + edma_write_array(ctlr, EDMA_EMCR, j, + 1 << i); /* Clear any SER */ - edma_shadow0_write_array(SH_SECR, j, - (1 << i)); - if (intr_data[k].callback) { - intr_data[k].callback(k, - DMA_CC_ERROR, - intr_data - [k].data); + edma_shadow0_write_array(ctlr, SH_SECR, + j, (1 << i)); + if (edma_info[ctlr]->intr_data[k]. + callback) { + edma_info[ctlr]->intr_data[k]. + callback(k, + DMA_CC_ERROR, + edma_info[ctlr]->intr_data + [k].data); } } } - } else if (edma_read(EDMA_QEMR)) { + } else if (edma_read(ctlr, EDMA_QEMR)) { dev_dbg(data, "QEMR %02x\n", - edma_read(EDMA_QEMR)); + edma_read(ctlr, EDMA_QEMR)); for (i = 0; i < 8; i++) { - if (edma_read(EDMA_QEMR) & (1 << i)) { + if (edma_read(ctlr, EDMA_QEMR) & (1 << i)) { /* Clear the corresponding IPR bits */ - edma_write(EDMA_QEMCR, 1 << i); - edma_shadow0_write(SH_QSECR, (1 << i)); + edma_write(ctlr, EDMA_QEMCR, 1 << i); + edma_shadow0_write(ctlr, SH_QSECR, + (1 << i)); /* NOTE: not reported!! */ } } - } else if (edma_read(EDMA_CCERR)) { + } else if (edma_read(ctlr, EDMA_CCERR)) { dev_dbg(data, "CCERR %08x\n", - edma_read(EDMA_CCERR)); + edma_read(ctlr, EDMA_CCERR)); /* FIXME: CCERR.BIT(16) ignored! much better * to just write CCERRCLR with CCERR value... */ for (i = 0; i < 8; i++) { - if (edma_read(EDMA_CCERR) & (1 << i)) { + if (edma_read(ctlr, EDMA_CCERR) & (1 << i)) { /* Clear the corresponding IPR bits */ - edma_write(EDMA_CCERRCLR, 1 << i); + edma_write(ctlr, EDMA_CCERRCLR, 1 << i); /* NOTE: not reported!! */ } } } - if ((edma_read_array(EDMA_EMR, 0) == 0) - && (edma_read_array(EDMA_EMR, 1) == 0) - && (edma_read(EDMA_QEMR) == 0) - && (edma_read(EDMA_CCERR) == 0)) { + if ((edma_read_array(ctlr, EDMA_EMR, 0) == 0) + && (edma_read_array(ctlr, EDMA_EMR, 1) == 0) + && (edma_read(ctlr, EDMA_QEMR) == 0) + && (edma_read(ctlr, EDMA_CCERR) == 0)) { break; } cnt++; if (cnt > 10) break; } - edma_write(EDMA_EEVAL, 1); + edma_write(ctlr, EDMA_EEVAL, 1); return IRQ_HANDLED; } @@ -484,35 +547,53 @@ int edma_alloc_channel(int channel, void *data, enum dma_event_q eventq_no) { + unsigned i, done, ctlr = 0; + + if (channel >= 0) { + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + } + if (channel < 0) { - channel = 0; - for (;;) { - channel = find_next_bit(edma_noevent, - num_channels, channel); - if (channel == num_channels) - return -ENOMEM; - if (!test_and_set_bit(channel, edma_inuse)) + for (i = 0; i < EDMA_MAX_CC; i++) { + channel = 0; + for (;;) { + channel = find_next_bit(edma_info[i]-> + edma_noevent, + edma_info[i]->num_channels, + channel); + if (channel == edma_info[i]->num_channels) + return -ENOMEM; + if (!test_and_set_bit(channel, + edma_info[i]->edma_inuse)) { + done = 1; + ctlr = i; + break; + } + channel++; + } + if (done) break; - channel++; } - } else if (channel >= num_channels) { + } else if (channel >= edma_info[ctlr]->num_channels) { return -EINVAL; - } else if (test_and_set_bit(channel, edma_inuse)) { + } else if (test_and_set_bit(channel, edma_info[ctlr]->edma_inuse)) { return -EBUSY; } /* ensure access through shadow region 0 */ - edma_or_array2(EDMA_DRAE, 0, channel >> 5, 1 << (channel & 0x1f)); + edma_or_array2(ctlr, EDMA_DRAE, 0, channel >> 5, 1 << (channel & 0x1f)); /* ensure no events are pending */ - edma_stop(channel); - memcpy_toio(edmacc_regs_base + PARM_OFFSET(channel), + edma_stop(EDMA_CTLR_CHAN(ctlr, channel)); + memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(channel), &dummy_paramset, PARM_SIZE); if (callback) - setup_dma_interrupt(channel, callback, data); + setup_dma_interrupt(EDMA_CTLR_CHAN(ctlr, channel), + callback, data); - map_dmach_queue(channel, eventq_no); + map_dmach_queue(ctlr, channel, eventq_no); return channel; } @@ -532,15 +613,20 @@ EXPORT_SYMBOL(edma_alloc_channel); */ void edma_free_channel(unsigned channel) { - if (channel >= num_channels) + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel >= edma_info[ctlr]->num_channels) return; setup_dma_interrupt(channel, NULL, NULL); /* REVISIT should probably take out of shadow region 0 */ - memcpy_toio(edmacc_regs_base + PARM_OFFSET(channel), + memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(channel), &dummy_paramset, PARM_SIZE); - clear_bit(channel, edma_inuse); + clear_bit(channel, edma_info[ctlr]->edma_inuse); } EXPORT_SYMBOL(edma_free_channel); @@ -558,28 +644,33 @@ EXPORT_SYMBOL(edma_free_channel); * * Returns the number of the slot, else negative errno. */ -int edma_alloc_slot(int slot) +int edma_alloc_slot(unsigned ctlr, int slot) { + if (slot >= 0) + slot = EDMA_CHAN_SLOT(slot); + if (slot < 0) { - slot = num_channels; + slot = edma_info[ctlr]->num_channels; for (;;) { - slot = find_next_zero_bit(edma_inuse, - num_slots, slot); - if (slot == num_slots) + slot = find_next_zero_bit(edma_info[ctlr]->edma_inuse, + edma_info[ctlr]->num_slots, slot); + if (slot == edma_info[ctlr]->num_slots) return -ENOMEM; - if (!test_and_set_bit(slot, edma_inuse)) + if (!test_and_set_bit(slot, + edma_info[ctlr]->edma_inuse)) break; } - } else if (slot < num_channels || slot >= num_slots) { + } else if (slot < edma_info[ctlr]->num_channels || + slot >= edma_info[ctlr]->num_slots) { return -EINVAL; - } else if (test_and_set_bit(slot, edma_inuse)) { + } else if (test_and_set_bit(slot, edma_info[ctlr]->edma_inuse)) { return -EBUSY; } - memcpy_toio(edmacc_regs_base + PARM_OFFSET(slot), + memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), &dummy_paramset, PARM_SIZE); - return slot; + return EDMA_CTLR_CHAN(ctlr, slot); } EXPORT_SYMBOL(edma_alloc_slot); @@ -593,12 +684,18 @@ EXPORT_SYMBOL(edma_alloc_slot); */ void edma_free_slot(unsigned slot) { - if (slot < num_channels || slot >= num_slots) + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_info[ctlr]->num_channels || + slot >= edma_info[ctlr]->num_slots) return; - memcpy_toio(edmacc_regs_base + PARM_OFFSET(slot), + memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), &dummy_paramset, PARM_SIZE); - clear_bit(slot, edma_inuse); + clear_bit(slot, edma_info[ctlr]->edma_inuse); } EXPORT_SYMBOL(edma_free_slot); @@ -620,8 +717,13 @@ EXPORT_SYMBOL(edma_free_slot); void edma_set_src(unsigned slot, dma_addr_t src_port, enum address_mode mode, enum fifo_width width) { - if (slot < num_slots) { - unsigned int i = edma_parm_read(PARM_OPT, slot); + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_info[ctlr]->num_slots) { + unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot); if (mode) { /* set SAM and program FWID */ @@ -630,11 +732,11 @@ void edma_set_src(unsigned slot, dma_addr_t src_port, /* clear SAM */ i &= ~SAM; } - edma_parm_write(PARM_OPT, slot, i); + edma_parm_write(ctlr, PARM_OPT, slot, i); /* set the source port address in source register of param structure */ - edma_parm_write(PARM_SRC, slot, src_port); + edma_parm_write(ctlr, PARM_SRC, slot, src_port); } } EXPORT_SYMBOL(edma_set_src); @@ -653,8 +755,13 @@ EXPORT_SYMBOL(edma_set_src); void edma_set_dest(unsigned slot, dma_addr_t dest_port, enum address_mode mode, enum fifo_width width) { - if (slot < num_slots) { - unsigned int i = edma_parm_read(PARM_OPT, slot); + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_info[ctlr]->num_slots) { + unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot); if (mode) { /* set DAM and program FWID */ @@ -663,10 +770,10 @@ void edma_set_dest(unsigned slot, dma_addr_t dest_port, /* clear DAM */ i &= ~DAM; } - edma_parm_write(PARM_OPT, slot, i); + edma_parm_write(ctlr, PARM_OPT, slot, i); /* set the destination port address in dest register of param structure */ - edma_parm_write(PARM_DST, slot, dest_port); + edma_parm_write(ctlr, PARM_DST, slot, dest_port); } } EXPORT_SYMBOL(edma_set_dest); @@ -683,8 +790,12 @@ EXPORT_SYMBOL(edma_set_dest); void edma_get_position(unsigned slot, dma_addr_t *src, dma_addr_t *dst) { struct edmacc_param temp; + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); - edma_read_slot(slot, &temp); + edma_read_slot(EDMA_CTLR_CHAN(ctlr, slot), &temp); if (src != NULL) *src = temp.src; if (dst != NULL) @@ -704,10 +815,15 @@ EXPORT_SYMBOL(edma_get_position); */ void edma_set_src_index(unsigned slot, s16 src_bidx, s16 src_cidx) { - if (slot < num_slots) { - edma_parm_modify(PARM_SRC_DST_BIDX, slot, + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_info[ctlr]->num_slots) { + edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot, 0xffff0000, src_bidx); - edma_parm_modify(PARM_SRC_DST_CIDX, slot, + edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot, 0xffff0000, src_cidx); } } @@ -725,10 +841,15 @@ EXPORT_SYMBOL(edma_set_src_index); */ void edma_set_dest_index(unsigned slot, s16 dest_bidx, s16 dest_cidx) { - if (slot < num_slots) { - edma_parm_modify(PARM_SRC_DST_BIDX, slot, + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_info[ctlr]->num_slots) { + edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot, 0x0000ffff, dest_bidx << 16); - edma_parm_modify(PARM_SRC_DST_CIDX, slot, + edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot, 0x0000ffff, dest_cidx << 16); } } @@ -767,16 +888,21 @@ void edma_set_transfer_params(unsigned slot, u16 acnt, u16 bcnt, u16 ccnt, u16 bcnt_rld, enum sync_dimension sync_mode) { - if (slot < num_slots) { - edma_parm_modify(PARM_LINK_BCNTRLD, slot, + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_info[ctlr]->num_slots) { + edma_parm_modify(ctlr, PARM_LINK_BCNTRLD, slot, 0x0000ffff, bcnt_rld << 16); if (sync_mode == ASYNC) - edma_parm_and(PARM_OPT, slot, ~SYNCDIM); + edma_parm_and(ctlr, PARM_OPT, slot, ~SYNCDIM); else - edma_parm_or(PARM_OPT, slot, SYNCDIM); + edma_parm_or(ctlr, PARM_OPT, slot, SYNCDIM); /* Set the acount, bcount, ccount registers */ - edma_parm_write(PARM_A_B_CNT, slot, (bcnt << 16) | acnt); - edma_parm_write(PARM_CCNT, slot, ccnt); + edma_parm_write(ctlr, PARM_A_B_CNT, slot, (bcnt << 16) | acnt); + edma_parm_write(ctlr, PARM_CCNT, slot, ccnt); } } EXPORT_SYMBOL(edma_set_transfer_params); @@ -790,11 +916,19 @@ EXPORT_SYMBOL(edma_set_transfer_params); */ void edma_link(unsigned from, unsigned to) { - if (from >= num_slots) + unsigned ctlr_from, ctlr_to; + + ctlr_from = EDMA_CTLR(from); + from = EDMA_CHAN_SLOT(from); + ctlr_to = EDMA_CTLR(to); + to = EDMA_CHAN_SLOT(to); + + if (from >= edma_info[ctlr_from]->num_slots) return; - if (to >= num_slots) + if (to >= edma_info[ctlr_to]->num_slots) return; - edma_parm_modify(PARM_LINK_BCNTRLD, from, 0xffff0000, PARM_OFFSET(to)); + edma_parm_modify(ctlr_from, PARM_LINK_BCNTRLD, from, 0xffff0000, + PARM_OFFSET(to)); } EXPORT_SYMBOL(edma_link); @@ -807,9 +941,14 @@ EXPORT_SYMBOL(edma_link); */ void edma_unlink(unsigned from) { - if (from >= num_slots) + unsigned ctlr; + + ctlr = EDMA_CTLR(from); + from = EDMA_CHAN_SLOT(from); + + if (from >= edma_info[ctlr]->num_slots) return; - edma_parm_or(PARM_LINK_BCNTRLD, from, 0xffff); + edma_parm_or(ctlr, PARM_LINK_BCNTRLD, from, 0xffff); } EXPORT_SYMBOL(edma_unlink); @@ -829,9 +968,15 @@ EXPORT_SYMBOL(edma_unlink); */ void edma_write_slot(unsigned slot, const struct edmacc_param *param) { - if (slot >= num_slots) + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot >= edma_info[ctlr]->num_slots) return; - memcpy_toio(edmacc_regs_base + PARM_OFFSET(slot), param, PARM_SIZE); + memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), param, + PARM_SIZE); } EXPORT_SYMBOL(edma_write_slot); @@ -845,9 +990,15 @@ EXPORT_SYMBOL(edma_write_slot); */ void edma_read_slot(unsigned slot, struct edmacc_param *param) { - if (slot >= num_slots) + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot >= edma_info[ctlr]->num_slots) return; - memcpy_fromio(param, edmacc_regs_base + PARM_OFFSET(slot), PARM_SIZE); + memcpy_fromio(param, edmacc_regs_base[ctlr] + PARM_OFFSET(slot), + PARM_SIZE); } EXPORT_SYMBOL(edma_read_slot); @@ -864,10 +1015,15 @@ EXPORT_SYMBOL(edma_read_slot); */ void edma_pause(unsigned channel) { - if (channel < num_channels) { + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_info[ctlr]->num_channels) { unsigned int mask = (1 << (channel & 0x1f)); - edma_shadow0_write_array(SH_EECR, channel >> 5, mask); + edma_shadow0_write_array(ctlr, SH_EECR, channel >> 5, mask); } } EXPORT_SYMBOL(edma_pause); @@ -880,10 +1036,15 @@ EXPORT_SYMBOL(edma_pause); */ void edma_resume(unsigned channel) { - if (channel < num_channels) { + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_info[ctlr]->num_channels) { unsigned int mask = (1 << (channel & 0x1f)); - edma_shadow0_write_array(SH_EESR, channel >> 5, mask); + edma_shadow0_write_array(ctlr, SH_EESR, channel >> 5, mask); } } EXPORT_SYMBOL(edma_resume); @@ -901,28 +1062,33 @@ EXPORT_SYMBOL(edma_resume); */ int edma_start(unsigned channel) { - if (channel < num_channels) { + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_info[ctlr]->num_channels) { int j = channel >> 5; unsigned int mask = (1 << (channel & 0x1f)); /* EDMA channels without event association */ - if (test_bit(channel, edma_noevent)) { + if (test_bit(channel, edma_info[ctlr]->edma_noevent)) { pr_debug("EDMA: ESR%d %08x\n", j, - edma_shadow0_read_array(SH_ESR, j)); - edma_shadow0_write_array(SH_ESR, j, mask); + edma_shadow0_read_array(ctlr, SH_ESR, j)); + edma_shadow0_write_array(ctlr, SH_ESR, j, mask); return 0; } /* EDMA channel with event association */ pr_debug("EDMA: ER%d %08x\n", j, - edma_shadow0_read_array(SH_ER, j)); + edma_shadow0_read_array(ctlr, SH_ER, j)); /* Clear any pending error */ - edma_write_array(EDMA_EMCR, j, mask); + edma_write_array(ctlr, EDMA_EMCR, j, mask); /* Clear any SER */ - edma_shadow0_write_array(SH_SECR, j, mask); - edma_shadow0_write_array(SH_EESR, j, mask); + edma_shadow0_write_array(ctlr, SH_SECR, j, mask); + edma_shadow0_write_array(ctlr, SH_EESR, j, mask); pr_debug("EDMA: EER%d %08x\n", j, - edma_shadow0_read_array(SH_EER, j)); + edma_shadow0_read_array(ctlr, SH_EER, j)); return 0; } @@ -941,17 +1107,22 @@ EXPORT_SYMBOL(edma_start); */ void edma_stop(unsigned channel) { - if (channel < num_channels) { + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_info[ctlr]->num_channels) { int j = channel >> 5; unsigned int mask = (1 << (channel & 0x1f)); - edma_shadow0_write_array(SH_EECR, j, mask); - edma_shadow0_write_array(SH_ECR, j, mask); - edma_shadow0_write_array(SH_SECR, j, mask); - edma_write_array(EDMA_EMCR, j, mask); + edma_shadow0_write_array(ctlr, SH_EECR, j, mask); + edma_shadow0_write_array(ctlr, SH_ECR, j, mask); + edma_shadow0_write_array(ctlr, SH_SECR, j, mask); + edma_write_array(ctlr, EDMA_EMCR, j, mask); pr_debug("EDMA: EER%d %08x\n", j, - edma_shadow0_read_array(SH_EER, j)); + edma_shadow0_read_array(ctlr, SH_EER, j)); /* REVISIT: consider guarding against inappropriate event * chaining by overwriting with dummy_paramset. @@ -975,18 +1146,23 @@ EXPORT_SYMBOL(edma_stop); void edma_clean_channel(unsigned channel) { - if (channel < num_channels) { + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_info[ctlr]->num_channels) { int j = (channel >> 5); unsigned int mask = 1 << (channel & 0x1f); pr_debug("EDMA: EMR%d %08x\n", j, - edma_read_array(EDMA_EMR, j)); - edma_shadow0_write_array(SH_ECR, j, mask); + edma_read_array(ctlr, EDMA_EMR, j)); + edma_shadow0_write_array(ctlr, SH_ECR, j, mask); /* Clear the corresponding EMR bits */ - edma_write_array(EDMA_EMCR, j, mask); + edma_write_array(ctlr, EDMA_EMCR, j, mask); /* Clear any SER */ - edma_shadow0_write_array(SH_SECR, j, mask); - edma_write(EDMA_CCERRCLR, (1 << 16) | 0x3); + edma_shadow0_write_array(ctlr, SH_SECR, j, mask); + edma_write(ctlr, EDMA_CCERRCLR, (1 << 16) | 0x3); } } EXPORT_SYMBOL(edma_clean_channel); @@ -998,12 +1174,17 @@ EXPORT_SYMBOL(edma_clean_channel); */ void edma_clear_event(unsigned channel) { - if (channel >= num_channels) + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel >= edma_info[ctlr]->num_channels) return; if (channel < 32) - edma_write(EDMA_ECR, 1 << channel); + edma_write(ctlr, EDMA_ECR, 1 << channel); else - edma_write(EDMA_ECRH, 1 << (channel - 32)); + edma_write(ctlr, EDMA_ECRH, 1 << (channel - 32)); } EXPORT_SYMBOL(edma_clear_event); @@ -1012,62 +1193,129 @@ EXPORT_SYMBOL(edma_clear_event); static int __init edma_probe(struct platform_device *pdev) { struct edma_soc_info *info = pdev->dev.platform_data; - int i; - int status; + const s8 (*queue_priority_mapping)[2]; + const s8 (*queue_tc_mapping)[2]; + int i, j, found = 0; + int status = -1; const s8 *noevent; - int irq = 0, err_irq = 0; - struct resource *r; - resource_size_t len; + int irq[EDMA_MAX_CC] = {0, 0}; + int err_irq[EDMA_MAX_CC] = {0, 0}; + struct resource *r[EDMA_MAX_CC] = {NULL}; + resource_size_t len[EDMA_MAX_CC]; + char res_name[10]; + char irq_name[10]; if (!info) return -ENODEV; - r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "edma_cc"); - if (!r) - return -ENODEV; + for (j = 0; j < EDMA_MAX_CC; j++) { + sprintf(res_name, "edma_cc%d", j); + r[j] = platform_get_resource_byname(pdev, IORESOURCE_MEM, + res_name); + if (!r[j]) { + if (found) + break; + else + return -ENODEV; + } else + found = 1; + + len[j] = resource_size(r[j]); + + r[j] = request_mem_region(r[j]->start, len[j], + dev_name(&pdev->dev)); + if (!r[j]) { + status = -EBUSY; + goto fail1; + } - len = r->end - r->start + 1; + edmacc_regs_base[j] = ioremap(r[j]->start, len[j]); + if (!edmacc_regs_base[j]) { + status = -EBUSY; + goto fail1; + } - r = request_mem_region(r->start, len, r->name); - if (!r) - return -EBUSY; + edma_info[j] = kmalloc(sizeof(struct edma), GFP_KERNEL); + if (!edma_info[j]) { + status = -ENOMEM; + goto fail1; + } + memset(edma_info[j], 0, sizeof(struct edma)); + + edma_info[j]->num_channels = min_t(unsigned, info[j].n_channel, + EDMA_MAX_DMACH); + edma_info[j]->num_slots = min_t(unsigned, info[j].n_slot, + EDMA_MAX_PARAMENTRY); + edma_info[j]->num_cc = min_t(unsigned, info[j].n_cc, + EDMA_MAX_CC); + + dev_dbg(&pdev->dev, "DMA REG BASE ADDR=%p\n", + edmacc_regs_base[j]); + + for (i = 0; i < edma_info[j]->num_slots; i++) + memcpy_toio(edmacc_regs_base[j] + PARM_OFFSET(i), + &dummy_paramset, PARM_SIZE); + + noevent = info[j].noevent; + if (noevent) { + while (*noevent != -1) + set_bit(*noevent++, edma_info[j]->edma_noevent); + } - edmacc_regs_base = ioremap(r->start, len); - if (!edmacc_regs_base) { - status = -EBUSY; - goto fail1; - } + sprintf(irq_name, "edma%d", j); + irq[j] = platform_get_irq_byname(pdev, irq_name); + edma_info[j]->irq_res_start = irq[j]; + status = request_irq(irq[j], dma_irq_handler, 0, "edma", + &pdev->dev); + if (status < 0) { + dev_dbg(&pdev->dev, "request_irq %d failed --> %d\n", + irq[j], status); + goto fail; + } - num_channels = min_t(unsigned, info->n_channel, EDMA_MAX_DMACH); - num_slots = min_t(unsigned, info->n_slot, EDMA_MAX_PARAMENTRY); + sprintf(irq_name, "edma%d_err", j); + err_irq[j] = platform_get_irq_byname(pdev, irq_name); + edma_info[j]->irq_res_end = err_irq[j]; + status = request_irq(err_irq[j], dma_ccerr_handler, 0, + "edma_error", &pdev->dev); + if (status < 0) { + dev_dbg(&pdev->dev, "request_irq %d failed --> %d\n", + err_irq[j], status); + goto fail; + } - dev_dbg(&pdev->dev, "DMA REG BASE ADDR=%p\n", edmacc_regs_base); + /* Everything lives on transfer controller 1 until otherwise + * specified. This way, long transfers on the low priority queue + * started by the codec engine will not cause audio defects. + */ + for (i = 0; i < edma_info[j]->num_channels; i++) + map_dmach_queue(j, i, EVENTQ_1); - for (i = 0; i < num_slots; i++) - memcpy_toio(edmacc_regs_base + PARM_OFFSET(i), - &dummy_paramset, PARM_SIZE); + queue_tc_mapping = info[j].queue_tc_mapping; + queue_priority_mapping = info[j].queue_priority_mapping; - noevent = info->noevent; - if (noevent) { - while (*noevent != -1) - set_bit(*noevent++, edma_noevent); - } + /* Event queue to TC mapping */ + for (i = 0; queue_tc_mapping[i][0] != -1; i++) + map_queue_tc(j, queue_tc_mapping[i][0], + queue_tc_mapping[i][1]); - irq = platform_get_irq(pdev, 0); - status = request_irq(irq, dma_irq_handler, 0, "edma", &pdev->dev); - if (status < 0) { - dev_dbg(&pdev->dev, "request_irq %d failed --> %d\n", - irq, status); - goto fail; - } + /* Event queue priority mapping */ + for (i = 0; queue_priority_mapping[i][0] != -1; i++) + assign_priority_to_queue(j, + queue_priority_mapping[i][0], + queue_priority_mapping[i][1]); + + /* Map the channel to param entry if channel mapping logic + * exist + */ + if (edma_read(j, EDMA_CCCFG) & CHMAP_EXIST) + map_dmach_param(j); - err_irq = platform_get_irq(pdev, 1); - status = request_irq(err_irq, dma_ccerr_handler, 0, - "edma_error", &pdev->dev); - if (status < 0) { - dev_dbg(&pdev->dev, "request_irq %d failed --> %d\n", - err_irq, status); - goto fail; + for (i = 0; i < info[j].n_region; i++) { + edma_write_array2(j, EDMA_DRAE, i, 0, 0x0); + edma_write_array2(j, EDMA_DRAE, i, 1, 0x0); + edma_write_array(j, EDMA_QRAE, i, 0x0); + } } if (tc_errs_handled) { @@ -1087,38 +1335,23 @@ static int __init edma_probe(struct platform_device *pdev) } } - /* Everything lives on transfer controller 1 until otherwise specified. - * This way, long transfers on the low priority queue - * started by the codec engine will not cause audio defects. - */ - for (i = 0; i < num_channels; i++) - map_dmach_queue(i, EVENTQ_1); - - /* Event queue to TC mapping */ - for (i = 0; queue_tc_mapping[i][0] != -1; i++) - map_queue_tc(queue_tc_mapping[i][0], queue_tc_mapping[i][1]); - - /* Event queue priority mapping */ - for (i = 0; queue_priority_mapping[i][0] != -1; i++) - assign_priority_to_queue(queue_priority_mapping[i][0], - queue_priority_mapping[i][1]); - - for (i = 0; i < info->n_region; i++) { - edma_write_array2(EDMA_DRAE, i, 0, 0x0); - edma_write_array2(EDMA_DRAE, i, 1, 0x0); - edma_write_array(EDMA_QRAE, i, 0x0); - } - return 0; fail: - if (err_irq) - free_irq(err_irq, NULL); - if (irq) - free_irq(irq, NULL); - iounmap(edmacc_regs_base); + for (i = 0; i < EDMA_MAX_CC; i++) { + if (err_irq[i]) + free_irq(err_irq[i], &pdev->dev); + if (irq[i]) + free_irq(irq[i], &pdev->dev); + } fail1: - release_mem_region(r->start, len); + for (i = 0; i < EDMA_MAX_CC; i++) { + if (r[i]) + release_mem_region(r[i]->start, len[i]); + if (edmacc_regs_base[i]) + iounmap(edmacc_regs_base[i]); + kfree(edma_info[i]); + } return status; } diff --git a/arch/arm/mach-davinci/include/mach/edma.h b/arch/arm/mach-davinci/include/mach/edma.h index 24a379239d7f..ba2ebdd058a0 100644 --- a/arch/arm/mach-davinci/include/mach/edma.h +++ b/arch/arm/mach-davinci/include/mach/edma.h @@ -170,6 +170,10 @@ enum sync_dimension { ABSYNC = 1 }; +#define EDMA_CTLR_CHAN(ctlr, chan) (((ctlr) << 16) | (chan)) +#define EDMA_CTLR(i) ((i) >> 16) +#define EDMA_CHAN_SLOT(i) ((i) & 0xffff) + #define EDMA_CHANNEL_ANY -1 /* for edma_alloc_channel() */ #define EDMA_SLOT_ANY -1 /* for edma_alloc_slot() */ @@ -180,7 +184,7 @@ int edma_alloc_channel(int channel, void edma_free_channel(unsigned channel); /* alloc/free parameter RAM slots */ -int edma_alloc_slot(int slot); +int edma_alloc_slot(unsigned ctlr, int slot); void edma_free_slot(unsigned slot); /* calls that operate on part of a parameter RAM slot */ @@ -216,9 +220,12 @@ struct edma_soc_info { unsigned n_region; unsigned n_slot; unsigned n_tc; + unsigned n_cc; /* list of channels with no even trigger; terminated by "-1" */ const s8 *noevent; + const s8 (*queue_tc_mapping)[2]; + const s8 (*queue_priority_mapping)[2]; }; #endif |