spi_dma.c File Reference

#include <amdblocks/lpc.h>
#include <amdblocks/spi.h>
#include <assert.h>
#include <boot_device.h>
#include <commonlib/bsd/helpers.h>
#include <commonlib/region.h>
#include <console/console.h>
#include <delay.h>
#include <device/pci_ops.h>
#include <soc/pci_devs.h>
#include <spi_flash.h>
#include <string.h>
#include <thread.h>
#include <types.h>

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Data Structures
struct	spi_dma_transaction

Macros
#define	rom_base   ((void *)(uintptr_t)(0x100000000ULL - CONFIG_ROM_SIZE))

Functions
static void *	spi_dma_mmap (const struct region_device *rd, size_t offset, size_t size __unused)
static int	spi_dma_munmap (const struct region_device *rd __unused, void *mapping __unused)
static ssize_t	spi_dma_readat_mmap (const struct region_device *rd, void *b, size_t offset, size_t size)
static bool	spi_dma_is_busy (void)
static bool	spi_dma_has_error (void)
static bool	can_use_dma (void *destination, size_t source, size_t size)
static void	start_spi_dma_transaction (struct spi_dma_transaction *transaction)
static bool	continue_spi_dma_transaction (const struct region_device *rd, struct spi_dma_transaction *transaction)
static ssize_t	spi_dma_readat_dma (const struct region_device *rd, void *destination, size_t source, size_t size)
static ssize_t	spi_dma_readat (const struct region_device *rd, void *b, size_t offset, size_t size)
const struct region_device *	boot_device_ro (void)
uint32_t	spi_flash_get_mmap_windows (struct flash_mmap_window *table)
static void	spi_dma_fix (void)
void	boot_device_init (void)

Variables
static struct thread_mutex	spi_dma_hw_mutex
const struct region_device_ops	spi_dma_rdev_ro_ops
static const struct mem_region_device	boot_dev

Macro Definition Documentation

rom_base

#define rom_base   ((void *)(uintptr_t)(0x100000000ULL - CONFIG_ROM_SIZE))

Definition at line 19 of file spi_dma.c.

Function Documentation

boot_device_init()

void boot_device_init

(

void

)

Definition at line 263 of file spi_dma.c.

References spi_dma_fix().

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boot_device_ro()

const struct region_device* boot_device_ro

(

void

)

Definition at line 235 of file spi_dma.c.

References boot_dev, and mem_region_device::rdev.

can_use_dma()

static bool can_use_dma ( void *  destination, size_t  source, size_t  size  )

static

Definition at line 67 of file spi_dma.c.

References BIOS_DEBUG, IS_ALIGNED, LPC_ROM_DMA_MIN_ALIGNMENT, and printk.

continue_spi_dma_transaction()

static bool continue_spi_dma_transaction ( const struct region_device *  rd, struct spi_dma_transaction *  transaction  )

static

Definition at line 134 of file spi_dma.c.

References assert, BIOS_ERR, spi_dma_transaction::destination, LPC_ROM_DMA_MIN_ALIGNMENT, LPC_ROM_DMA_SRC_ADDR, pci_read_config32(), printk, spi_dma_transaction::remaining, SOC_LPC_DEV, spi_dma_transaction::source, spi_dma_has_error(), spi_dma_is_busy(), spi_dma_readat_mmap(), spi_hw_mutex, start_spi_dma_transaction(), thread_mutex_unlock(), and spi_dma_transaction::transfer_size.

Referenced by spi_dma_readat_dma().

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spi_dma_fix()

static void spi_dma_fix ( void  )

static

Definition at line 255 of file spi_dma.c.

References BIT, spi_read8(), spi_write8(), and val.

Referenced by boot_device_init().

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spi_dma_has_error()

static bool spi_dma_has_error ( void  )

static

Definition at line 61 of file spi_dma.c.

References LPC_ROM_DMA_CTRL_ERROR, LPC_ROM_DMA_EC_HOST_CONTROL, pci_read_config32(), and SOC_LPC_DEV.

Referenced by continue_spi_dma_transaction().

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spi_dma_is_busy()

static bool spi_dma_is_busy ( void  )

static

Definition at line 55 of file spi_dma.c.

References LPC_ROM_DMA_CTRL_START, LPC_ROM_DMA_EC_HOST_CONTROL, pci_read_config32(), and SOC_LPC_DEV.

Referenced by continue_spi_dma_transaction(), and start_spi_dma_transaction().

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spi_dma_mmap()

static void* spi_dma_mmap ( const struct region_device *  rd, size_t  offset, size_t size  __unused  )

static

Definition at line 29 of file spi_dma.c.

References container_of, mdev, offset, and rdev.

spi_dma_munmap()

static int spi_dma_munmap ( const struct region_device *rd  __unused, void *mapping  __unused  )

static

Definition at line 38 of file spi_dma.c.

spi_dma_readat()

static ssize_t spi_dma_readat ( const struct region_device *  rd, void *  b, size_t  offset, size_t  size  )

static

Definition at line 215 of file spi_dma.c.

spi_dma_readat_dma()

static ssize_t spi_dma_readat_dma ( const struct region_device *  rd, void *  destination, size_t  source, size_t  size  )

static

Definition at line 180 of file spi_dma.c.

References BIOS_SPEW, continue_spi_dma_transaction(), spi_dma_transaction::destination, printk, spi_dma_transaction::remaining, spi_dma_transaction::size, spi_dma_transaction::source, spi_dma_hw_mutex, start_spi_dma_transaction(), thread_mutex_lock(), thread_mutex_unlock(), thread_yield(), and udelay().

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spi_dma_readat_mmap()

static ssize_t spi_dma_readat_mmap ( const struct region_device *  rd, void *  b, size_t  offset, size_t  size  )

static

Definition at line 43 of file spi_dma.c.

References container_of, mdev, memcpy(), offset, and rdev.

Referenced by continue_spi_dma_transaction().

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spi_flash_get_mmap_windows()

uint32_t spi_flash_get_mmap_windows

(

struct flash_mmap_window *

table

)

Definition at line 240 of file spi_dma.c.

References flash_mmap_window::flash_base, flash_mmap_window::host_base, rom_base, and flash_mmap_window::size.

start_spi_dma_transaction()

static void start_spi_dma_transaction ( struct spi_dma_transaction *  transaction )

static

Definition at line 93 of file spi_dma.c.

References ALIGN_DOWN, assert, BIOS_SPEW, spi_dma_transaction::destination, IS_ALIGNED, LPC_ROM_DMA_CTRL_DW_COUNT, LPC_ROM_DMA_CTRL_DW_COUNT_MASK, LPC_ROM_DMA_CTRL_ERROR, LPC_ROM_DMA_CTRL_MAX_BYTES, LPC_ROM_DMA_CTRL_START, LPC_ROM_DMA_DST_ADDR, LPC_ROM_DMA_EC_HOST_CONTROL, LPC_ROM_DMA_MIN_ALIGNMENT, LPC_ROM_DMA_SRC_ADDR, MIN, pci_read_config32(), pci_write_config32(), printk, spi_dma_transaction::remaining, SOC_LPC_DEV, spi_dma_transaction::source, spi_dma_is_busy(), spi_hw_mutex, thread_mutex_lock(), and spi_dma_transaction::transfer_size.

Referenced by continue_spi_dma_transaction(), and spi_dma_readat_dma().

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Variable Documentation

boot_dev

const struct mem_region_device boot_dev

static

Initial value:

= {
        .base = rom_base,
        .rdev = REGION_DEV_INIT(&spi_dma_rdev_ro_ops, 0, CONFIG_ROM_SIZE),
}

Definition at line 215 of file spi_dma.c.

Referenced by boot_device_ro().

spi_dma_hw_mutex

struct thread_mutex spi_dma_hw_mutex

static

Definition at line 134 of file spi_dma.c.

Referenced by spi_dma_readat_dma().

spi_dma_rdev_ro_ops

const struct region_device_ops spi_dma_rdev_ro_ops

Initial value:

= {
        .mmap = spi_dma_mmap,
        .munmap = spi_dma_munmap,
        .readat = spi_dma_readat,
}

Definition at line 215 of file spi_dma.c.