diff options
Diffstat (limited to 'drivers/mmc/sdhci.h')
| -rw-r--r-- | drivers/mmc/sdhci.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/sdhci.h new file mode 100644 index 000000000000..3b270ef486b4 --- /dev/null +++ b/drivers/mmc/sdhci.h @@ -0,0 +1,185 @@ +/* + * linux/drivers/mmc/sdhci.h - Secure Digital Host Controller Interface driver + * + * Copyright (C) 2005 Pierre Ossman, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * PCI registers + */ + +#define PCI_SLOT_INFO 0x40 /* 8 bits */ +#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7) +#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07 + +/* + * Controller registers + */ + +#define SDHCI_DMA_ADDRESS 0x00 + +#define SDHCI_BLOCK_SIZE 0x04 + +#define SDHCI_BLOCK_COUNT 0x06 + +#define SDHCI_ARGUMENT 0x08 + +#define SDHCI_TRANSFER_MODE 0x0C +#define SDHCI_TRNS_DMA 0x01 +#define SDHCI_TRNS_BLK_CNT_EN 0x02 +#define SDHCI_TRNS_ACMD12 0x04 +#define SDHCI_TRNS_READ 0x10 +#define SDHCI_TRNS_MULTI 0x20 + +#define SDHCI_COMMAND 0x0E +#define SDHCI_CMD_RESP_MASK 0x03 +#define SDHCI_CMD_CRC 0x08 +#define SDHCI_CMD_INDEX 0x10 +#define SDHCI_CMD_DATA 0x20 + +#define SDHCI_CMD_RESP_NONE 0x00 +#define SDHCI_CMD_RESP_LONG 0x01 +#define SDHCI_CMD_RESP_SHORT 0x02 +#define SDHCI_CMD_RESP_SHORT_BUSY 0x03 + +#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff)) + +#define SDHCI_RESPONSE 0x10 + +#define SDHCI_BUFFER 0x20 + +#define SDHCI_PRESENT_STATE 0x24 +#define SDHCI_CMD_INHIBIT 0x00000001 +#define SDHCI_DATA_INHIBIT 0x00000002 +#define SDHCI_DOING_WRITE 0x00000100 +#define SDHCI_DOING_READ 0x00000200 +#define SDHCI_SPACE_AVAILABLE 0x00000400 +#define SDHCI_DATA_AVAILABLE 0x00000800 +#define SDHCI_CARD_PRESENT 0x00010000 +#define SDHCI_WRITE_PROTECT 0x00080000 + +#define SDHCI_HOST_CONTROL 0x28 +#define SDHCI_CTRL_LED 0x01 +#define SDHCI_CTRL_4BITBUS 0x02 + +#define SDHCI_POWER_CONTROL 0x29 + +#define SDHCI_BLOCK_GAP_CONTROL 0x2A + +#define SDHCI_WALK_UP_CONTROL 0x2B + +#define SDHCI_CLOCK_CONTROL 0x2C +#define SDHCI_DIVIDER_SHIFT 8 +#define SDHCI_CLOCK_CARD_EN 0x0004 +#define SDHCI_CLOCK_INT_STABLE 0x0002 +#define SDHCI_CLOCK_INT_EN 0x0001 + +#define SDHCI_TIMEOUT_CONTROL 0x2E + +#define SDHCI_SOFTWARE_RESET 0x2F +#define SDHCI_RESET_ALL 0x01 +#define SDHCI_RESET_CMD 0x02 +#define SDHCI_RESET_DATA 0x04 + +#define SDHCI_INT_STATUS 0x30 +#define SDHCI_INT_ENABLE 0x34 +#define SDHCI_SIGNAL_ENABLE 0x38 +#define SDHCI_INT_RESPONSE 0x00000001 +#define SDHCI_INT_DATA_END 0x00000002 +#define SDHCI_INT_DMA_END 0x00000008 +#define SDHCI_INT_BUF_EMPTY 0x00000010 +#define SDHCI_INT_BUF_FULL 0x00000020 +#define SDHCI_INT_CARD_INSERT 0x00000040 +#define SDHCI_INT_CARD_REMOVE 0x00000080 +#define SDHCI_INT_CARD_INT 0x00000100 +#define SDHCI_INT_TIMEOUT 0x00010000 +#define SDHCI_INT_CRC 0x00020000 +#define SDHCI_INT_END_BIT 0x00040000 +#define SDHCI_INT_INDEX 0x00080000 +#define SDHCI_INT_DATA_TIMEOUT 0x00100000 +#define SDHCI_INT_DATA_CRC 0x00200000 +#define SDHCI_INT_DATA_END_BIT 0x00400000 +#define SDHCI_INT_BUS_POWER 0x00800000 +#define SDHCI_INT_ACMD12ERR 0x01000000 + +#define SDHCI_INT_NORMAL_MASK 0x00007FFF +#define SDHCI_INT_ERROR_MASK 0xFFFF8000 + +#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \ + SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX) +#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \ + SDHCI_INT_BUF_EMPTY | SDHCI_INT_BUF_FULL | \ + SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ + SDHCI_INT_DATA_END_BIT) + +#define SDHCI_ACMD12_ERR 0x3C + +/* 3E-3F reserved */ + +#define SDHCI_CAPABILITIES 0x40 +#define SDHCI_CAN_DO_DMA 0x00400000 +#define SDHCI_CLOCK_BASE_MASK 0x00003F00 +#define SDHCI_CLOCK_BASE_SHIFT 8 + +/* 44-47 reserved for more caps */ + +#define SDHCI_MAX_CURRENT 0x48 + +/* 4C-4F reserved for more max current */ + +/* 50-FB reserved */ + +#define SDHCI_SLOT_INT_STATUS 0xFC + +#define SDHCI_HOST_VERSION 0xFE + +struct sdhci_chip; + +struct sdhci_host { + struct sdhci_chip *chip; + struct mmc_host *mmc; /* MMC structure */ + + spinlock_t lock; /* Mutex */ + + int flags; /* Host attributes */ +#define SDHCI_USE_DMA (1<<0) + + unsigned int max_clk; /* Max possible freq (MHz) */ + + unsigned int clock; /* Current clock (MHz) */ + + struct mmc_request *mrq; /* Current request */ + struct mmc_command *cmd; /* Current command */ + struct mmc_data *data; /* Current data request */ + + struct scatterlist *cur_sg; /* We're working on this */ + char *mapped_sg; /* This is where it's mapped */ + int num_sg; /* Entries left */ + int offset; /* Offset into current sg */ + int remain; /* Bytes left in current */ + + int size; /* Remaining bytes in transfer */ + + char slot_descr[20]; /* Name for reservations */ + + int irq; /* Device IRQ */ + int bar; /* PCI BAR index */ + unsigned long addr; /* Bus address */ + void __iomem * ioaddr; /* Mapped address */ + + struct tasklet_struct card_tasklet; /* Tasklet structures */ + struct tasklet_struct finish_tasklet; + + struct timer_list timer; /* Timer for timeouts */ +}; + +struct sdhci_chip { + struct pci_dev *pdev; + + int num_slots; /* Slots on controller */ + struct sdhci_host *hosts[0]; /* Pointers to hosts */ +}; |