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Merge branch 'topic/pl08x' into for-linus

zero-colors
Vinod Koul 2017-07-04 10:05:10 +05:30
parent 70ef9af765 fcc785417f
commit 98cd085ebb
9 changed files with 906 additions and 277 deletions
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9
Documentation/devicetree/bindings/dma/arm-pl08x.txt
View File

@ -3,6 +3,11 @@
Required properties:
- compatible: "arm,pl080", "arm,primecell";
"arm,pl081", "arm,primecell";
"faraday,ftdmac020", "arm,primecell"
- arm,primecell-periphid: on the FTDMAC020 the primecell ID is not hard-coded
in the hardware and must be specified here as <0x0003b080>. This number
follows the PrimeCell standard numbering using the JEP106 vendor code 0x38
for Faraday Technology.
- reg: Address range of the PL08x registers
- interrupt: The PL08x interrupt number
- clocks: The clock running the IP core clock
@ -20,8 +25,8 @@ Optional properties:
- dma-requests: contains the total number of DMA requests supported by the DMAC
- memcpy-burst-size: the size of the bursts for memcpy: 1, 4, 8, 16, 32
64, 128 or 256 bytes are legal values
- memcpy-bus-width: the bus width used for memcpy: 8, 16 or 32 are legal
values
- memcpy-bus-width: the bus width used for memcpy in bits: 8, 16 or 32 are legal
values, the Faraday FTDMAC020 can also accept 64 bits
Clients
Required properties:

3
arch/arm/mach-lpc32xx/phy3250.c
View File

@ -137,6 +137,9 @@ static void pl08x_put_signal(const struct pl08x_channel_data *cd, int ch)
}
static struct pl08x_platform_data pl08x_pd = {
/* Some reasonable memcpy defaults */
.memcpy_burst_size = PL08X_BURST_SZ_256,
.memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
.slave_channels = &pl08x_slave_channels[0],
.num_slave_channels = ARRAY_SIZE(pl08x_slave_channels),
.get_xfer_signal = pl08x_get_signal,

28
arch/arm/mach-s3c64xx/pl080.c
View File

@ -137,16 +137,10 @@ static const struct dma_slave_map s3c64xx_dma0_slave_map[] = {
};
struct pl08x_platform_data s3c64xx_dma0_plat_data = {
.memcpy_channel = {
.bus_id = "memcpy",
.cctl_memcpy =
(PL080_BSIZE_4 << PL080_CONTROL_SB_SIZE_SHIFT |
PL080_BSIZE_4 << PL080_CONTROL_DB_SIZE_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT |
PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE |
PL080_CONTROL_PROT_SYS),
},
.memcpy_burst_size = PL08X_BURST_SZ_4,
.memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
.memcpy_prot_buff = true,
.memcpy_prot_cache = true,
.lli_buses = PL08X_AHB1,
.mem_buses = PL08X_AHB1,
.get_xfer_signal = pl08x_get_xfer_signal,
@ -238,16 +232,10 @@ static const struct dma_slave_map s3c64xx_dma1_slave_map[] = {
};
struct pl08x_platform_data s3c64xx_dma1_plat_data = {
.memcpy_channel = {
.bus_id = "memcpy",
.cctl_memcpy =
(PL080_BSIZE_4 << PL080_CONTROL_SB_SIZE_SHIFT |
PL080_BSIZE_4 << PL080_CONTROL_DB_SIZE_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT |
PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT |
PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE |
PL080_CONTROL_PROT_SYS),
},
.memcpy_burst_size = PL08X_BURST_SZ_4,
.memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
.memcpy_prot_buff = true,
.memcpy_prot_cache = true,
.lli_buses = PL08X_AHB1,
.mem_buses = PL08X_AHB1,
.get_xfer_signal = pl08x_get_xfer_signal,

14
arch/arm/mach-spear/spear3xx.c
View File

@ -44,16 +44,10 @@ struct pl022_ssp_controller pl022_plat_data = {
/* dmac device registration */
struct pl08x_platform_data pl080_plat_data = {
.memcpy_channel = {
.bus_id = "memcpy",
.cctl_memcpy =
(PL080_BSIZE_16 << PL080_CONTROL_SB_SIZE_SHIFT | \
PL080_BSIZE_16 << PL080_CONTROL_DB_SIZE_SHIFT | \
PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT | \
PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT | \
PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE | \
PL080_CONTROL_PROT_SYS),
},
.memcpy_burst_size = PL08X_BURST_SZ_16,
.memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
.memcpy_prot_buff = true,
.memcpy_prot_cache = true,
.lli_buses = PL08X_AHB1,
.mem_buses = PL08X_AHB1,
.get_xfer_signal = pl080_get_signal,

14
arch/arm/mach-spear/spear6xx.c
View File

@ -322,16 +322,10 @@ static struct pl08x_channel_data spear600_dma_info[] = {
};
static struct pl08x_platform_data spear6xx_pl080_plat_data = {
.memcpy_channel = {
.bus_id = "memcpy",
.cctl_memcpy =
(PL080_BSIZE_16 << PL080_CONTROL_SB_SIZE_SHIFT | \
PL080_BSIZE_16 << PL080_CONTROL_DB_SIZE_SHIFT | \
PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT | \
PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT | \
PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE | \
PL080_CONTROL_PROT_SYS),
},
.memcpy_burst_size = PL08X_BURST_SZ_16,
.memcpy_bus_width = PL08X_BUS_WIDTH_32_BITS,
.memcpy_prot_buff = true,
.memcpy_prot_cache = true,
.lli_buses = PL08X_AHB1,
.mem_buses = PL08X_AHB1,
.get_xfer_signal = pl080_get_signal,

6
drivers/dma/Kconfig
View File

@ -62,8 +62,10 @@ config AMBA_PL08X
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Platform has a PL08x DMAC device
which can provide DMA engine support
Say yes if your platform has a PL08x DMAC device which can
provide DMA engine support. This includes the original ARM
PL080 and PL081, Samsungs PL080 derivative and Faraday
Technology's FTDMAC020 PL080 derivative.
config AMCC_PPC440SPE_ADMA
tristate "AMCC PPC440SPe ADMA support"

974
drivers/dma/amba-pl08x.c
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File diff suppressed because it is too large Load Diff

105
include/linux/amba/pl080.h
View File

@ -44,7 +44,14 @@
#define PL080_SYNC (0x34)
/* Per channel configuration registers */
/* The Faraday Technology FTDMAC020 variant registers */
#define FTDMAC020_CH_BUSY (0x20)
/* Identical to PL080_CONFIG */
#define FTDMAC020_CSR (0x24)
/* Identical to PL080_SYNC */
#define FTDMAC020_SYNC (0x2C)
#define FTDMAC020_REVISION (0x30)
#define FTDMAC020_FEATURE (0x34)
/* Per channel configuration registers */
#define PL080_Cx_BASE(x) ((0x100 + (x * 0x20)))
@ -55,13 +62,20 @@
#define PL080_CH_CONFIG (0x10)
#define PL080S_CH_CONTROL2 (0x10)
#define PL080S_CH_CONFIG (0x14)
/* The Faraday FTDMAC020 derivative shuffles the registers around */
#define FTDMAC020_CH_CSR (0x00)
#define FTDMAC020_CH_CFG (0x04)
#define FTDMAC020_CH_SRC_ADDR (0x08)
#define FTDMAC020_CH_DST_ADDR (0x0C)
#define FTDMAC020_CH_LLP (0x10)
#define FTDMAC020_CH_SIZE (0x14)
#define PL080_LLI_ADDR_MASK (0x3fffffff << 2)
#define PL080_LLI_ADDR_MASK GENMASK(31, 2)
#define PL080_LLI_ADDR_SHIFT (2)
#define PL080_LLI_LM_AHB2 BIT(0)
#define PL080_CONTROL_TC_IRQ_EN BIT(31)
#define PL080_CONTROL_PROT_MASK (0x7 << 28)
#define PL080_CONTROL_PROT_MASK GENMASK(30, 28)
#define PL080_CONTROL_PROT_SHIFT (28)
#define PL080_CONTROL_PROT_CACHE BIT(30)
#define PL080_CONTROL_PROT_BUFF BIT(29)
@ -70,16 +84,16 @@
#define PL080_CONTROL_SRC_INCR BIT(26)
#define PL080_CONTROL_DST_AHB2 BIT(25)
#define PL080_CONTROL_SRC_AHB2 BIT(24)
#define PL080_CONTROL_DWIDTH_MASK (0x7 << 21)
#define PL080_CONTROL_DWIDTH_MASK GENMASK(23, 21)
#define PL080_CONTROL_DWIDTH_SHIFT (21)
#define PL080_CONTROL_SWIDTH_MASK (0x7 << 18)
#define PL080_CONTROL_SWIDTH_MASK GENMASK(20, 18)
#define PL080_CONTROL_SWIDTH_SHIFT (18)
#define PL080_CONTROL_DB_SIZE_MASK (0x7 << 15)
#define PL080_CONTROL_DB_SIZE_MASK GENMASK(17, 15)
#define PL080_CONTROL_DB_SIZE_SHIFT (15)
#define PL080_CONTROL_SB_SIZE_MASK (0x7 << 12)
#define PL080_CONTROL_SB_SIZE_MASK GENMASK(14, 12)
#define PL080_CONTROL_SB_SIZE_SHIFT (12)
#define PL080_CONTROL_TRANSFER_SIZE_MASK (0xfff << 0)
#define PL080S_CONTROL_TRANSFER_SIZE_MASK (0x1ffffff << 0)
#define PL080_CONTROL_TRANSFER_SIZE_MASK GENMASK(11, 0)
#define PL080S_CONTROL_TRANSFER_SIZE_MASK GENMASK(24, 0)
#define PL080_CONTROL_TRANSFER_SIZE_SHIFT (0)
#define PL080_BSIZE_1 (0x0)
@ -102,11 +116,11 @@
#define PL080_CONFIG_LOCK BIT(16)
#define PL080_CONFIG_TC_IRQ_MASK BIT(15)
#define PL080_CONFIG_ERR_IRQ_MASK BIT(14)
#define PL080_CONFIG_FLOW_CONTROL_MASK (0x7 << 11)
#define PL080_CONFIG_FLOW_CONTROL_MASK GENMASK(13, 11)
#define PL080_CONFIG_FLOW_CONTROL_SHIFT (11)
#define PL080_CONFIG_DST_SEL_MASK (0xf << 6)
#define PL080_CONFIG_DST_SEL_MASK GENMASK(9, 6)
#define PL080_CONFIG_DST_SEL_SHIFT (6)
#define PL080_CONFIG_SRC_SEL_MASK (0xf << 1)
#define PL080_CONFIG_SRC_SEL_MASK GENMASK(4, 1)
#define PL080_CONFIG_SRC_SEL_SHIFT (1)
#define PL080_CONFIG_ENABLE BIT(0)
@ -119,6 +133,73 @@
#define PL080_FLOW_PER2MEM_PER (0x6)
#define PL080_FLOW_SRC2DST_SRC (0x7)
#define FTDMAC020_CH_CSR_TC_MSK BIT(31)
/* Later versions have a threshold in bits 24..26, */
#define FTDMAC020_CH_CSR_FIFOTH_MSK GENMASK(26, 24)
#define FTDMAC020_CH_CSR_FIFOTH_SHIFT (24)
#define FTDMAC020_CH_CSR_CHPR1_MSK GENMASK(23, 22)
#define FTDMAC020_CH_CSR_PROT3 BIT(21)
#define FTDMAC020_CH_CSR_PROT2 BIT(20)
#define FTDMAC020_CH_CSR_PROT1 BIT(19)
#define FTDMAC020_CH_CSR_SRC_SIZE_MSK GENMASK(18, 16)
#define FTDMAC020_CH_CSR_SRC_SIZE_SHIFT (16)
#define FTDMAC020_CH_CSR_ABT BIT(15)
#define FTDMAC020_CH_CSR_SRC_WIDTH_MSK GENMASK(13, 11)
#define FTDMAC020_CH_CSR_SRC_WIDTH_SHIFT (11)
#define FTDMAC020_CH_CSR_DST_WIDTH_MSK GENMASK(10, 8)
#define FTDMAC020_CH_CSR_DST_WIDTH_SHIFT (8)
#define FTDMAC020_CH_CSR_MODE BIT(7)
/* 00 = increase, 01 = decrease, 10 = fix */
#define FTDMAC020_CH_CSR_SRCAD_CTL_MSK GENMASK(6, 5)
#define FTDMAC020_CH_CSR_SRCAD_CTL_SHIFT (5)
#define FTDMAC020_CH_CSR_DSTAD_CTL_MSK GENMASK(4, 3)
#define FTDMAC020_CH_CSR_DSTAD_CTL_SHIFT (3)
#define FTDMAC020_CH_CSR_SRC_SEL BIT(2)
#define FTDMAC020_CH_CSR_DST_SEL BIT(1)
#define FTDMAC020_CH_CSR_EN BIT(0)
/* FIFO threshold setting */
#define FTDMAC020_CH_CSR_FIFOTH_1 (0x0)
#define FTDMAC020_CH_CSR_FIFOTH_2 (0x1)
#define FTDMAC020_CH_CSR_FIFOTH_4 (0x2)
#define FTDMAC020_CH_CSR_FIFOTH_8 (0x3)
#define FTDMAC020_CH_CSR_FIFOTH_16 (0x4)
/* The FTDMAC020 supports 64bit wide transfers */
#define FTDMAC020_WIDTH_64BIT (0x3)
/* Address can be increased, decreased or fixed */
#define FTDMAC020_CH_CSR_SRCAD_CTL_INC (0x0)
#define FTDMAC020_CH_CSR_SRCAD_CTL_DEC (0x1)
#define FTDMAC020_CH_CSR_SRCAD_CTL_FIXED (0x2)
#define FTDMAC020_CH_CFG_LLP_CNT_MASK GENMASK(19, 16)
#define FTDMAC020_CH_CFG_LLP_CNT_SHIFT (16)
#define FTDMAC020_CH_CFG_BUSY BIT(8)
#define FTDMAC020_CH_CFG_INT_ABT_MASK BIT(2)
#define FTDMAC020_CH_CFG_INT_ERR_MASK BIT(1)
#define FTDMAC020_CH_CFG_INT_TC_MASK BIT(0)
/* Inside the LLIs, the applicable CSR fields are mapped differently */
#define FTDMAC020_LLI_TC_MSK BIT(28)
#define FTDMAC020_LLI_SRC_WIDTH_MSK GENMASK(27, 25)
#define FTDMAC020_LLI_SRC_WIDTH_SHIFT (25)
#define FTDMAC020_LLI_DST_WIDTH_MSK GENMASK(24, 22)
#define FTDMAC020_LLI_DST_WIDTH_SHIFT (22)
#define FTDMAC020_LLI_SRCAD_CTL_MSK GENMASK(21, 20)
#define FTDMAC020_LLI_SRCAD_CTL_SHIFT (20)
#define FTDMAC020_LLI_DSTAD_CTL_MSK GENMASK(19, 18)
#define FTDMAC020_LLI_DSTAD_CTL_SHIFT (18)
#define FTDMAC020_LLI_SRC_SEL BIT(17)
#define FTDMAC020_LLI_DST_SEL BIT(16)
#define FTDMAC020_LLI_TRANSFER_SIZE_MASK GENMASK(11, 0)
#define FTDMAC020_LLI_TRANSFER_SIZE_SHIFT (0)
#define FTDMAC020_CFG_LLP_CNT_MASK GENMASK(19, 16)
#define FTDMAC020_CFG_LLP_CNT_SHIFT (16)
#define FTDMAC020_CFG_BUSY BIT(8)
#define FTDMAC020_CFG_INT_ABT_MSK BIT(2)
#define FTDMAC020_CFG_INT_ERR_MSK BIT(1)
#define FTDMAC020_CFG_INT_TC_MSK BIT(0)
/* DMA linked list chain structure */
struct pl080_lli {

30
include/linux/amba/pl08x.h
View File

@ -47,8 +47,6 @@ enum {
* devices with static assignments
* @muxval: a number usually used to poke into some mux regiser to
* mux in the signal to this channel
* @cctl_memcpy: options for the channel control register for memcpy
* *** not used for slave channels ***
* @addr: source/target address in physical memory for this DMA channel,
* can be the address of a FIFO register for burst requests for example.
* This can be left undefined if the PrimeCell API is used for configuring
@ -63,12 +61,28 @@ struct pl08x_channel_data {
int min_signal;
int max_signal;
u32 muxval;
u32 cctl_memcpy;
dma_addr_t addr;
bool single;
u8 periph_buses;
};
enum pl08x_burst_size {
PL08X_BURST_SZ_1,
PL08X_BURST_SZ_4,
PL08X_BURST_SZ_8,
PL08X_BURST_SZ_16,
PL08X_BURST_SZ_32,
PL08X_BURST_SZ_64,
PL08X_BURST_SZ_128,
PL08X_BURST_SZ_256,
};
enum pl08x_bus_width {
PL08X_BUS_WIDTH_8_BITS,
PL08X_BUS_WIDTH_16_BITS,
PL08X_BUS_WIDTH_32_BITS,
};
/**
* struct pl08x_platform_data - the platform configuration for the PL08x
* PrimeCells.
@ -76,6 +90,11 @@ struct pl08x_channel_data {
* platform, all inclusive, including multiplexed channels. The available
* physical channels will be multiplexed around these signals as they are
* requested, just enumerate all possible channels.
* @num_slave_channels: number of elements in the slave channel array
* @memcpy_burst_size: the appropriate burst size for memcpy operations
* @memcpy_bus_width: memory bus width
* @memcpy_prot_buff: whether memcpy DMA is bufferable
* @memcpy_prot_cache: whether memcpy DMA is cacheable
* @get_xfer_signal: request a physical signal to be used for a DMA transfer
* immediately: if there is some multiplexing or similar blocking the use
* of the channel the transfer can be denied by returning less than zero,
@ -90,7 +109,10 @@ struct pl08x_channel_data {
struct pl08x_platform_data {
struct pl08x_channel_data *slave_channels;
unsigned int num_slave_channels;
struct pl08x_channel_data memcpy_channel;
enum pl08x_burst_size memcpy_burst_size;
enum pl08x_bus_width memcpy_bus_width;
bool memcpy_prot_buff;
bool memcpy_prot_cache;
int (*get_xfer_signal)(const struct pl08x_channel_data *);
void (*put_xfer_signal)(const struct pl08x_channel_data *, int);
u8 lli_buses;