qspi.c File Reference

#include <spi-generic.h>
#include <spi_flash.h>
#include <arch/cache.h>
#include <device/mmio.h>
#include <soc/addressmap.h>
#include <soc/qspi_common.h>
#include <soc/gpio.h>
#include <soc/clock.h>
#include <symbols.h>
#include <assert.h>
#include <gpio.h>
#include <string.h>

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Data Structures
struct	cmd_desc
struct	xfer_cfg

Macros
#define	CACHE_LINE_SIZE   64

Enumerations
enum	qspi_mode {   SDR_1BIT = 1 , SDR_2BIT = 2 , SDR_4BIT = 3 , DDR_1BIT = 5 ,   DDR_2BIT = 6 , DDR_4BIT = 7 }
enum	cs_state { CS_DEASSERT , CS_ASSERT }
enum	bus_xfer_direction { MASTER_READ = 0 , MASTER_WRITE = 1 }

Functions
static void	dma_transfer_chain (struct cmd_desc *chain)
static void	flush_chain (void)
static struct cmd_desc *	allocate_descriptor (void)
static void	cs_change (enum cs_state state)
static void	configure_gpios (void)
static void	queue_bounce_data (uint8_t *data, uint32_t data_bytes, enum qspi_mode data_mode, bool write)
static void	queue_direct_data (uint8_t *data, uint32_t data_bytes, enum qspi_mode data_mode, bool write)
static void	queue_data (uint8_t *data, uint32_t data_bytes, enum qspi_mode data_mode, bool write)
static void	reg_init (void)
void	quadspi_init (uint32_t hz)
int	qspi_claim_bus (const struct spi_slave *slave)
void	qspi_release_bus (const struct spi_slave *slave)
static int	xfer (enum qspi_mode mode, const void *dout, size_t out_bytes, void *din, size_t in_bytes)
int	qspi_xfer (const struct spi_slave *slave, const void *dout, size_t out_bytes, void *din, size_t in_bytes)
int	qspi_xfer_dual (const struct spi_slave *slave, const void *dout, size_t out_bytes, void *din, size_t in_bytes)

Variables
static int	curr_desc_idx = -1
struct {
struct cmd_desc   descriptors [3]
uint8_t   buffers [3][CACHE_LINE_SIZE]
} *	dma = (void *)_dma_coherent

Macro Definition Documentation

CACHE_LINE_SIZE

#define CACHE_LINE_SIZE   64

Definition at line 16 of file qspi.c.

Enumeration Type Documentation

bus_xfer_direction

enum bus_xfer_direction

Enumerator
MASTER_READ
MASTER_WRITE

Definition at line 54 of file qspi.c.

cs_state

enum cs_state

Enumerator
CS_DEASSERT
CS_ASSERT

Definition at line 45 of file qspi.c.

qspi_mode

enum qspi_mode

Enumerator
SDR_1BIT
SDR_2BIT
SDR_4BIT
DDR_1BIT
DDR_2BIT
DDR_4BIT

Definition at line 36 of file qspi.c.

Function Documentation

allocate_descriptor()

static struct cmd_desc* allocate_descriptor ( void  )

static

Definition at line 103 of file qspi.c.

References cmd_desc::bounce_dst, cmd_desc::bounce_length, cmd_desc::bounce_src, curr_desc_idx, cmd_desc::data_address, cmd_desc::direction, dma, cmd_desc::fragment, cmd_desc::length, MASTER_READ, cmd_desc::multi_io_mode, cmd_desc::next_descriptor, NULL, cmd_desc::reserved1, and cmd_desc::reserved2.

Referenced by queue_bounce_data(), and queue_direct_data().

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configure_gpios()

static void configure_gpios ( void  )

static

Definition at line 144 of file qspi.c.

References GPIO_8MA, gpio_configure(), GPIO_FUNC_QSPI_CLK, GPIO_FUNC_QSPI_DATA_0, GPIO_FUNC_QSPI_DATA_1, GPIO_NO_PULL, gpio_output(), GPIO_OUTPUT, QSPI_CLK, QSPI_CS, QSPI_DATA_0, and QSPI_DATA_1.

Referenced by quadspi_init().

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cs_change()

static void cs_change ( enum cs_state  state )

static

Definition at line 139 of file qspi.c.

References CS_DEASSERT, gpio_set(), and QSPI_CS.

Referenced by qspi_claim_bus(), and qspi_release_bus().

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dma_transfer_chain()

static void dma_transfer_chain ( struct cmd_desc *  chain )

static

Definition at line 64 of file qspi.c.

References DMA_CHAIN_DONE, qcom_qspi_regs::mstr_int_sts, qcom_qspi_regs::next_dma_desc_addr, qcom_qspi, read32(), and write32().

Referenced by flush_chain().

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flush_chain()

static void flush_chain ( void  )

static

Definition at line 78 of file qspi.c.

References cmd_desc::bounce_dst, cmd_desc::bounce_length, cmd_desc::bounce_src, curr_desc_idx, cmd_desc::data_address, dcache_invalidate_by_mva, cmd_desc::direction, dma, dma_transfer_chain(), cmd_desc::length, MASTER_READ, memcpy(), and cmd_desc::next_descriptor.

Referenced by xfer().

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qspi_claim_bus()

int qspi_claim_bus

(

const struct spi_slave *

slave

)

Definition at line 259 of file qspi.c.

References CS_ASSERT, and cs_change().

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qspi_release_bus()

void qspi_release_bus

(

const struct spi_slave *

slave

)

Definition at line 265 of file qspi.c.

References cs_change(), and CS_DEASSERT.

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qspi_xfer()

int qspi_xfer	(	const struct spi_slave *	slave,
		const void *	dout,
		size_t	out_bytes,
		void *	din,
		size_t	in_bytes
	)

Definition at line 286 of file qspi.c.

References SDR_1BIT, and xfer().

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qspi_xfer_dual()

int qspi_xfer_dual	(	const struct spi_slave *	slave,
		const void *	dout,
		size_t	out_bytes,
		void *	din,
		size_t	in_bytes
	)

Definition at line 292 of file qspi.c.

References SDR_2BIT, and xfer().

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quadspi_init()

void quadspi_init

(

uint32_t

hz

)

Definition at line 251 of file qspi.c.

References assert, CACHE_LINE_SIZE, clock_configure_qspi(), configure_gpios(), dcache_line_bytes(), and reg_init().

Referenced by bootblock_soc_init().

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queue_bounce_data()

static void queue_bounce_data ( uint8_t *  data, uint32_t  data_bytes, enum qspi_mode  data_mode, bool  write  )

static

Definition at line 158 of file qspi.c.

References allocate_descriptor(), cmd_desc::bounce_dst, cmd_desc::bounce_length, cmd_desc::bounce_src, cmd_desc::data_address, cmd_desc::direction, cmd_desc::length, memcpy(), and cmd_desc::multi_io_mode.

Referenced by queue_data().

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queue_data()

static void queue_data ( uint8_t *  data, uint32_t  data_bytes, enum qspi_mode  data_mode, bool  write  )

static

Definition at line 197 of file qspi.c.

References ALIGN_DOWN, ALIGN_UP, CACHE_LINE_SIZE, MIN, queue_bounce_data(), and queue_direct_data().

Referenced by xfer().

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queue_direct_data()

static void queue_direct_data ( uint8_t *  data, uint32_t  data_bytes, enum qspi_mode  data_mode, bool  write  )

static

Definition at line 180 of file qspi.c.

References allocate_descriptor(), cmd_desc::data_address, dcache_clean_by_mva(), dcache_invalidate_by_mva, cmd_desc::direction, cmd_desc::length, and cmd_desc::multi_io_mode.

Referenced by queue_data().

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reg_init()

static void reg_init ( void  )

static

Definition at line 224 of file qspi.c.

References qcom_qspi_regs::ahb_mstr_cfg, DMA_ENABLE, FB_CLK_EN, FULL_CYCLE_MODE, qcom_qspi_regs::mstr_cfg, qcom_qspi_regs::mstr_int_en, qcom_qspi_regs::mstr_int_sts, PIN_HOLDN, qcom_qspi, qcom_qspi_regs::rd_fifo_cfg, qcom_qspi_regs::rd_fifo_rst, RESET_FIFO, SBL_EN, SPI_MODE_SHIFT, TX_DATA_DELAY_SHIFT, TX_DATA_OE_DELAY_SHIFT, and write32().

Referenced by quadspi_init().

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xfer()

static int xfer ( enum qspi_mode  mode, const void *  dout, size_t  out_bytes, void *  din, size_t  in_bytes  )

static

Definition at line 270 of file qspi.c.

References flush_chain(), and queue_data().

Referenced by qspi_xfer(), and qspi_xfer_dual().

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Variable Documentation

buffers

uint8_t buffers[3][CACHE_LINE_SIZE]

Definition at line 61 of file qspi.c.

curr_desc_idx

int curr_desc_idx = -1

static

Definition at line 18 of file qspi.c.

Referenced by allocate_descriptor(), and flush_chain().

descriptors

struct cmd_desc descriptors[3]

Definition at line 33 of file qspi.c.

struct { ... } * dma

Referenced by allocate_descriptor(), dump_dma_regs(), flush_chain(), fw_cfg_dma(), lb_board(), and setup_dma_params().