drivers/sdmmc/mcihost.c File Reference

SD/MMC MCI host driver. More...

#include <stdbool.h>
#include <string.h>
#include <debug.h>
#include <delayed_work.h>
#include <bitops.h>
#include <io.h>
#include <interrupt.h>
#include <irq_handler.h>
#include <softirq.h>
#include <status-codes.h>
#include <util.h>
#include <slist.h>
#include <timeout.h>
#include <workqueue.h>
#include <buffer.h>
#include <malloc.h>
#include <dmac/dma_controller.h>
#include <chip/clk.h>
#include <chip/portmux.h>
#include <chip/irq-map.h>
#include <sdmmc/sdmmc.h>
#include <sdmmc/mcihost.h>
#include "protocol.h"
#include "mci_regs.h"
#include <board/sdmmc.h>
#include <app/softirq.h>
#include <app/timer.h>
#include <app/workqueue.h>

Include dependency graph for mcihost.c:

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Enumerations
enum	sdmmc_mcihost_state {   STATE_IDLE = 0, STATE_SENDING_CMD, STATE_DATA_XFER, STATE_SENDING_STOP,   STATE_FINISH_REQ, STATE_CARD_STATUS }
enum	mci_send_cmd_flags { MCI_SEND_CMD_STOP, MCI_SEND_CMD_WRITE }
Functions
static void	sdmmc_mcihost_load_data (struct sdmmc_mcihost *mcihost)
	Process the DMA queue.
struct sdmmc_host *	sdmmc_mcihost_init ()
	Initialize SD/MMC MCI host driver.

---

Detailed Description

SD/MMC MCI host driver.

SD/MMC MCI host driver providing interface between host layer and hardware.

• Compiler: IAR EWAVR32 and GNU GCC for AVR32
• Supported devices: All devices
• AppNote:

Author:

Atmel Corporation: http://www.atmel.com
Support and FAQ: http://support.atmel.no/

Definition in file mcihost.c.

---

Enumeration Type Documentation

enum mci_send_cmd_flags

Enumerator:

MCI_SEND_CMD_STOP	CMD is a STOP command
MCI_SEND_CMD_WRITE	CMD is a write command

Definition at line 135 of file mcihost.c.

enum sdmmc_mcihost_state

Enumerator:

STATE_IDLE	Initial state.
STATE_SENDING_CMD	Sending initial command.
STATE_DATA_XFER	Data transfer to/from card.
STATE_SENDING_STOP	Sending STOP command.
STATE_FINISH_REQ	Waiting for XFRDONE.
STATE_CARD_STATUS	Check card status.

Definition at line 96 of file mcihost.c.

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Function Documentation

struct sdmmc_host* sdmmc_mcihost_init

(

void

)

[read]

Initialize SD/MMC MCI host driver.

Returns:

0 on success, or a negative error code on failure.

Definition at line 1090 of file mcihost.c.

References BOARD_MCISLOT_A_CD, dbg_panic, dbg_printf, delayed_work_init(), DMAC_REG_WIDTH_32BIT, dmac_req_init(), get_mci_pclk_rate(), memset(), min, sdmmc_cd_init(), SDMMC_OCR_V_32_33, SDMMC_OCR_V_33_34, sdmmc_slot_init(), setup_irq_handler, slist_init(), softirq_set_handler(), and workqueue_init_item().

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static void sdmmc_mcihost_load_data

(

struct sdmmc_mcihost *

mcihost

)

[static]

Process the DMA queue.

For internal use only.

Note:

Must be called with softirq disabled

Definition at line 567 of file mcihost.c.

References assert, sdmmc_request::block_size, sdmmc_request::blocks, sdmmc_request::buf_list, dmac_request::buf_list, sdmmc_request::buf_list_done, dmac_request::bytes_xfered, sdmmc_request::bytes_xfered, dbg_error, dbg_verbose, dmac_chan_submit_request(), slist_init(), slist_is_empty(), slist_move_to_tail(), sdmmc_request::status, dmac_request::status, and STATUS_IN_PROGRESS.

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