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imx233: add sd/mmc debug screen

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The screen currently displays for each device the bus width, set_block_count
support, HS capability and whether it is enabled for not.

Change-Id: I6b1c3b1019e55ef1097a23c1f54fb07f5c7aa3b0
This commit is contained in:
Amaury Pouly 2016-05-29 16:07:43 +01:00
parent 7aacf4da2d
commit 85ad99ee3d
2 changed files with 127 additions and 6 deletions
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71
firmware/target/arm/imx233/sdmmc-imx233.c
View file

@ -55,6 +55,7 @@
#error SD/MMC mismatch
#endif
/* static configuration */
struct sdmmc_config_t
{
const char *name; /* name(for debug) */
@ -85,7 +86,7 @@ struct sdmmc_config_t
#define PIN2BANK(v) ((v) >> 5)
#define PIN2PIN(v) ((v) & 0x1f)
struct sdmmc_config_t sdmmc_config[] =
const struct sdmmc_config_t sdmmc_config[] =
{
#ifdef SANSA_FUZEPLUS
/* The Fuze+ uses pin #B0P8 for power */
@ -181,6 +182,15 @@ struct sdmmc_config_t sdmmc_config[] =
#endif
};
/* drive status */
struct sdmmc_status_t
{
int bus_width; /* bus width (1, 4 or 8) */
bool hs_capable; /* HS capable device */
bool hs_enabled; /* HS enabled */
bool has_sbc; /* support SET_BLOCK_COUNT */
};
#define SDMMC_NUM_DRIVES (sizeof(sdmmc_config) / sizeof(sdmmc_config[0]))
#define SDMMC_CONF(drive) sdmmc_config[drive]
@ -200,11 +210,12 @@ static uint8_t aligned_buffer[SDMMC_NUM_DRIVES][512] CACHEALIGN_ATTR;
static tCardInfo sdmmc_card_info[SDMMC_NUM_DRIVES];
static struct mutex mutex[SDMMC_NUM_DRIVES];
static int disk_last_activity[SDMMC_NUM_DRIVES];
static bool support_set_block_count[SDMMC_NUM_DRIVES];
static struct sdmmc_status_t sdmmc_status[SDMMC_NUM_DRIVES];
#define MIN_YIELD_PERIOD 5
#define SDMMC_INFO(drive) sdmmc_card_info[drive]
#define SDMMC_RCA(drive) SDMMC_INFO(drive).rca
#define SDMMC_STATUS(drive) sdmmc_status[drive]
/* sd only */
static long sdmmc_stack[(DEFAULT_STACK_SIZE*2 + 0x200)/sizeof(long)];
@ -425,6 +436,7 @@ static int init_sd_card(int drive)
/* Switch to 4-bit */
imx233_ssp_set_bus_width(ssp, 4);
SDMMC_STATUS(drive).bus_width = 4;
/* Try to switch V2 cards to HS timings, non HS seem to ignore this */
if(sd_v2)
@ -441,7 +453,7 @@ static int init_sd_card(int drive)
}
/* probe for CMD23 support */
support_set_block_count[drive] = false;
SDMMC_STATUS(drive).has_sbc = false;
/* ACMD51, only transfer 8 bytes */
imx233_ssp_set_block_size(ssp, /*log2(8)*/3);
if(send_cmd(drive, SD_APP_CMD, SDMMC_RCA(drive), MCI_RESP, &resp))
@ -450,7 +462,7 @@ static int init_sd_card(int drive)
aligned_buffer[drive], 1, true, true, NULL) == SSP_SUCCESS)
{
if(aligned_buffer[drive][3] & 2)
support_set_block_count[drive] = true;
SDMMC_STATUS(drive).has_sbc = true;
}
}
imx233_ssp_set_block_size(ssp, /*log2(512)*/9);
@ -458,6 +470,8 @@ static int init_sd_card(int drive)
/* SSPCLK @ 96MHz
* gives bitrate of 96 / 4 / 1 = 24MHz
* gives bitrate of 96 / 2 / 1 = 48MHz */
SDMMC_STATUS(drive).hs_capable = sd_hs;
SDMMC_STATUS(drive).hs_enabled = false;
if(/*sd_hs*/false)
imx233_ssp_set_timings(ssp, 2, 0, 0xffff);
else
@ -534,6 +548,9 @@ static int init_mmc_drive(int drive)
/* SSPCLK @ 96MHz
* gives bitrate of 96 / 2 / 1 = 48MHz */
imx233_ssp_set_timings(ssp, 2, 0, 0xffff);
SDMMC_STATUS(drive).bus_width = 8;
SDMMC_STATUS(drive).hs_capable = true;
SDMMC_STATUS(drive).hs_enabled = true;
/* read extended CSD */
{
@ -549,7 +566,7 @@ static int init_mmc_drive(int drive)
return -13;
/* MMC always support CMD23 */
support_set_block_count[drive] = false;
SDMMC_STATUS(drive).has_sbc = false;
SDMMC_INFO(drive).initialized = 1;
return 0;
@ -565,7 +582,7 @@ static int __xfer_sectors(int drive, unsigned long start, int count, void *buf,
{
int this_count = MIN(count, IMX233_MAX_SINGLE_DMA_XFER_SIZE / 512);
bool need_stop = true;
if(support_set_block_count[drive] && send_cmd(drive, 23, this_count, MCI_RESP, &resp))
if(SDMMC_STATUS(drive).has_sbc && send_cmd(drive, 23, this_count, MCI_RESP, &resp))
need_stop = false;
/* Set bank_start to the correct unit (blocks or bytes).
* MMC drives use block addressing, SD cards bytes or blocks */
@ -1070,3 +1087,45 @@ tCardInfo *mmc_card_info(int card_no)
}
#endif
/** Information about SD/MMC slot */
struct sdmmc_info_t
{
int drive; /* drive number (for queries like storage_removable(drive) */
const char *slot_name; /* name of the slot: 'internal' or 'microsd' */
bool window; /* is window enabled for this slot? */
int bus_width; /* current bus width */
bool hs_capable; /* is device high-speed capable? */
bool hs_enabled; /* is high-speed enabled? */
bool has_sbc; /* device support SET_BLOCK_COUNT */
};
struct sdmmc_info_t imx233_sdmmc_get_info(int drive, int storage_drive)
{
struct sdmmc_info_t info;
memset(&info, 0, sizeof(info));
info.drive = storage_drive;
info.slot_name = SDMMC_CONF(drive).name;
info.window = !!(SDMMC_CONF(drive).flags & WINDOW);
info.bus_width = SDMMC_STATUS(drive).bus_width;
info.hs_capable = SDMMC_STATUS(drive).hs_capable;
info.hs_enabled = SDMMC_STATUS(drive).hs_enabled;
info.has_sbc = SDMMC_STATUS(drive).has_sbc;
return info;
}
#if CONFIG_STORAGE & STORAGE_SD
/* return information about a particular sd device (use regular drive number) */
struct sdmmc_info_t imx233_sd_get_info(int card_no)
{
return imx233_sdmmc_get_info(sd_map[card_no], sd_first_drive + card_no);
}
#endif
#if CONFIG_STORAGE & STORAGE_MMC
/* return information about a particular mmc device (use regular drive number) */
struct sdmmc_info_t imx233_mmc_get_info(int card_no)
{
return imx233_sdmmc_get_info(mmc_map[card_no], mmc_first_drive + card_no);
}
#endif