diff options
Diffstat (limited to 'drivers/mmc/octeontx_hsmmc.h')
| -rw-r--r-- | drivers/mmc/octeontx_hsmmc.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/drivers/mmc/octeontx_hsmmc.h b/drivers/mmc/octeontx_hsmmc.h new file mode 100644 index 0000000000..70844b1cba --- /dev/null +++ b/drivers/mmc/octeontx_hsmmc.h @@ -0,0 +1,207 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (C) 2019 Marvell International Ltd. + * + * https://spdx.org/licenses + */ +#ifndef __OCTEONTX_HSMMC_H__ +#define __OCTEONTX_HSMMC_H__ +#include <asm/gpio.h> + +/** Name of our driver */ +#define OCTEONTX_MMC_DRIVER_NAME "octeontx-hsmmc" + +/** Maximum supported MMC slots */ +#define OCTEONTX_MAX_MMC_SLOT 3 + +#define POWER_ON_TIME 40 /** See SD 4.1 spec figure 6-5 */ + +/** + * Timeout used when waiting for commands to complete. We need to keep this + * above the hardware watchdog timeout which is usually limited to 1000ms + */ +#define WATCHDOG_COUNT (1100) /* in msecs */ + +/** + * Long timeout for commands which might take a while to complete. + */ +#define MMC_TIMEOUT_LONG 1000 + +/** + * Short timeout used for most commands in msecs + */ +#define MMC_TIMEOUT_SHORT 20 + +#define NSEC_PER_SEC 1000000000L + +#define MAX_NO_OF_TAPS 64 + +#define EXT_CSD_POWER_CLASS 187 /* R/W */ + +/* default HS400 tuning block number */ +#define DEFAULT_HS400_TUNING_BLOCK 1 + +struct octeontx_mmc_host; + +/** MMC/SD slot data structure */ +struct octeontx_mmc_slot { + struct mmc mmc; + struct mmc_config cfg; + struct octeontx_mmc_host *host; + struct udevice *dev; + void *base_addr; /** Same as host base_addr */ + u64 clock; + int bus_id; /** slot number */ + uint bus_width; + uint max_width; + int hs200_tap_adj; + int hs400_tap_adj; + int hs400_tuning_block; + struct gpio_desc cd_gpio; + struct gpio_desc wp_gpio; + struct gpio_desc power_gpio; + enum bus_mode mode; + union mio_emm_switch cached_switch; + union mio_emm_switch want_switch; + union mio_emm_rca cached_rca; + union mio_emm_timing taps; /* otx2: MIO_EMM_TIMING */ + union mio_emm_timing hs200_taps; + union mio_emm_timing hs400_taps; + /* These are used to see if our tuning is still valid or not */ + enum bus_mode last_mode; + u32 last_clock; + u32 block_len; + u32 block_count; + int cmd_clk_skew; + int dat_clk_skew; + uint cmd_cnt; /* otx: sample cmd in delay */ + uint dat_cnt; /* otx: sample data in delay */ + uint drive; /* Current drive */ + uint slew; /* clock skew */ + uint cmd_out_hs200_delay; + uint data_out_hs200_delay; + uint cmd_out_hs400_delay; + uint data_out_hs400_delay; + uint clk_period; + bool valid:1; + bool is_acmd:1; + bool tuned:1; + bool hs200_tuned:1; + bool hs400_tuned:1; + bool is_1_8v:1; + bool is_3_3v:1; + bool is_ddr:1; + bool is_asim:1; + bool is_emul:1; + bool cd_inverted:1; + bool wp_inverted:1; + bool disable_ddr:1; + bool non_removable:1; +}; + +struct octeontx_mmc_cr_mods { + u8 ctype_xor; + u8 rtype_xor; +}; + +struct octeontx_mmc_cr { + u8 c; + u8 r; +}; + +struct octeontx_sd_mods { + struct octeontx_mmc_cr mmc; + struct octeontx_mmc_cr sd; + struct octeontx_mmc_cr sdacmd; +}; + +/** Host controller data structure */ +struct octeontx_mmc_host { + struct udevice *dev; + void *base_addr; + struct octeontx_mmc_slot slots[OCTEONTX_MAX_MMC_SLOT + 1]; + pci_dev_t pdev; + u64 sys_freq; + union mio_emm_cfg emm_cfg; + u64 timing_taps; + struct mmc *last_mmc; /** Last mmc used */ + ofnode node; + int cur_slotid; + int last_slotid; + int max_width; + uint per_tap_delay; + uint num_slots; + uint dma_wait_delay; /* Delay before polling DMA in usecs */ + bool initialized:1; + bool timing_calibrated:1; + bool is_asim:1; + bool is_emul:1; + bool calibrate_glitch:1; + bool cond_clock_glitch:1; + bool tap_requires_noclk:1; + bool hs400_skew_needed:1; +}; + +/* + * NOTE: This was copied from the Linux kernel. + * + * MMC status in R1, for native mode (SPI bits are different) + * Type + * e:error bit + * s:status bit + * r:detected and set for the actual command response + * x:detected and set during command execution. the host must poll + * the card by sending status command in order to read these bits. + * Clear condition + * a:according to the card state + * b:always related to the previous command. Reception of + * a valid command will clear it (with a delay of one command) + * c:clear by read + */ +#define R1_OUT_OF_RANGE BIT(31) /* er, c */ +#define R1_ADDRESS_ERROR BIT(30) /* erx, c */ +#define R1_BLOCK_LEN_ERROR BIT(29) /* er, c */ +#define R1_ERASE_SEQ_ERROR BIT(28) /* er, c */ +#define R1_ERASE_PARAM BIT(27) /* ex, c */ +#define R1_WP_VIOLATION BIT(26) /* erx, c */ +#define R1_CARD_IS_LOCKED BIT(25) /* sx, a */ +#define R1_LOCK_UNLOCK_FAILED BIT(24) /* erx, c */ +#define R1_COM_CRC_ERROR BIT(23) /* er, b */ +/*#define R1_ILLEGAL_COMMAND BIT(22)*/ /* er, b */ +#define R1_CARD_ECC_FAILED BIT(21) /* ex, c */ +#define R1_CC_ERROR BIT(20) /* erx, c */ +#define R1_ERROR BIT(19) /* erx, c */ +#define R1_UNDERRUN BIT(18) /* ex, c */ +#define R1_OVERRUN BIT(17) /* ex, c */ +#define R1_CID_CSD_OVERWRITE BIT(16) /* erx, c, CID/CSD overwrite */ +#define R1_WP_ERASE_SKIP BIT(15) /* sx, c */ +#define R1_CARD_ECC_DISABLED BIT(14) /* sx, a */ +#define R1_ERASE_RESET BIT(13) /* sr, c */ +#define R1_STATUS(x) ((x) & 0xFFFFE000) +#define R1_CURRENT_STATE(x) (((x) & 0x00001E00) >> 9) /* sx, b (4 bits) */ +#define R1_READY_FOR_DATA BIT(8) /* sx, a */ +#define R1_SWITCH_ERROR BIT(7) /* sx, c */ + +#define R1_BLOCK_READ_MASK R1_OUT_OF_RANGE | \ + R1_ADDRESS_ERROR | \ + R1_BLOCK_LEN_ERROR | \ + R1_CARD_IS_LOCKED | \ + R1_COM_CRC_ERROR | \ + R1_ILLEGAL_COMMAND | \ + R1_CARD_ECC_FAILED | \ + R1_CC_ERROR | \ + R1_ERROR +#define R1_BLOCK_WRITE_MASK R1_OUT_OF_RANGE | \ + R1_ADDRESS_ERROR | \ + R1_BLOCK_LEN_ERROR | \ + R1_WP_VIOLATION | \ + R1_CARD_IS_LOCKED | \ + R1_COM_CRC_ERROR | \ + R1_ILLEGAL_COMMAND | \ + R1_CARD_ECC_FAILED | \ + R1_CC_ERROR | \ + R1_ERROR | \ + R1_UNDERRUN | \ + R1_OVERRUN + +#endif /* __OCTEONTX_HSMMC_H__ */ |