| Message ID | 20240628070216.92609-73-philmd@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | hw/sd/sdcard: Add eMMC support | expand |
On 6/28/24 9:01 AM, Philippe Mathieu-Daudé wrote: > Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Cédric Le Goater <clg@redhat.com> Thanks, C. > --- > hw/sd/sd.c | 82 ++++++++++++++++++++++++++++++------------------------ > 1 file changed, 45 insertions(+), 37 deletions(-) > > diff --git a/hw/sd/sd.c b/hw/sd/sd.c > index cd207a3090..167e1c517a 100644 > --- a/hw/sd/sd.c > +++ b/hw/sd/sd.c > @@ -1704,6 +1704,50 @@ static sd_rsp_type_t sd_acmd_SET_WR_BLK_ERASE_COUNT(SDState *sd, SDRequest req) > return sd_r1; > } > > +/* ACMD41 */ > +static sd_rsp_type_t sd_acmd_SD_APP_OP_COND(SDState *sd, SDRequest req) > +{ > + if (sd->state != sd_idle_state) { > + return sd_invalid_state_for_cmd(sd, req); > + } > + > + /* > + * If it's the first ACMD41 since reset, we need to decide > + * whether to power up. If this is not an enquiry ACMD41, > + * we immediately report power on and proceed below to the > + * ready state, but if it is, we set a timer to model a > + * delay for power up. This works around a bug in EDK2 > + * UEFI, which sends an initial enquiry ACMD41, but > + * assumes that the card is in ready state as soon as it > + * sees the power up bit set. > + */ > + if (!FIELD_EX32(sd->ocr, OCR, CARD_POWER_UP)) { > + if ((req.arg & ACMD41_ENQUIRY_MASK) != 0) { > + timer_del(sd->ocr_power_timer); > + sd_ocr_powerup(sd); > + } else { > + trace_sdcard_inquiry_cmd41(); > + if (!timer_pending(sd->ocr_power_timer)) { > + timer_mod_ns(sd->ocr_power_timer, > + (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > + + OCR_POWER_DELAY_NS)); > + } > + } > + } > + > + if (FIELD_EX32(sd->ocr & req.arg, OCR, VDD_VOLTAGE_WINDOW)) { > + /* > + * We accept any voltage. 10000 V is nothing. > + * > + * Once we're powered up, we advance straight to ready state > + * unless it's an enquiry ACMD41 (bits 23:0 == 0). > + */ > + sd->state = sd_ready_state; > + } > + > + return sd_r3; > +} > + > static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req) > { > uint64_t addr; > @@ -1812,43 +1856,6 @@ static sd_rsp_type_t sd_app_command(SDState *sd, > } > > switch (req.cmd) { > - case 41: /* ACMD41: SD_APP_OP_COND */ > - if (sd->state != sd_idle_state) { > - break; > - } > - /* If it's the first ACMD41 since reset, we need to decide > - * whether to power up. If this is not an enquiry ACMD41, > - * we immediately report power on and proceed below to the > - * ready state, but if it is, we set a timer to model a > - * delay for power up. This works around a bug in EDK2 > - * UEFI, which sends an initial enquiry ACMD41, but > - * assumes that the card is in ready state as soon as it > - * sees the power up bit set. */ > - if (!FIELD_EX32(sd->ocr, OCR, CARD_POWER_UP)) { > - if ((req.arg & ACMD41_ENQUIRY_MASK) != 0) { > - timer_del(sd->ocr_power_timer); > - sd_ocr_powerup(sd); > - } else { > - trace_sdcard_inquiry_cmd41(); > - if (!timer_pending(sd->ocr_power_timer)) { > - timer_mod_ns(sd->ocr_power_timer, > - (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) > - + OCR_POWER_DELAY_NS)); > - } > - } > - } > - > - if (FIELD_EX32(sd->ocr & req.arg, OCR, VDD_VOLTAGE_WINDOW)) { > - /* We accept any voltage. 10000 V is nothing. > - * > - * Once we're powered up, we advance straight to ready state > - * unless it's an enquiry ACMD41 (bits 23:0 == 0). > - */ > - sd->state = sd_ready_state; > - } > - > - return sd_r3; > - > case 42: /* ACMD42: SET_CLR_CARD_DETECT */ > switch (sd->state) { > case sd_transfer_state: > @@ -2379,6 +2386,7 @@ static const SDProto sd_proto_sd = { > [13] = {8, sd_adtc, "SD_STATUS", sd_acmd_SD_STATUS}, > [22] = {8, sd_adtc, "SEND_NUM_WR_BLOCKS", sd_acmd_SEND_NUM_WR_BLOCKS}, > [23] = {8, sd_ac, "SET_WR_BLK_ERASE_COUNT", sd_acmd_SET_WR_BLK_ERASE_COUNT}, > + [41] = {8, sd_bcr, "SD_APP_OP_COND", sd_acmd_SD_APP_OP_COND}, > }, > }; >
diff --git a/hw/sd/sd.c b/hw/sd/sd.c index cd207a3090..167e1c517a 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1704,6 +1704,50 @@ static sd_rsp_type_t sd_acmd_SET_WR_BLK_ERASE_COUNT(SDState *sd, SDRequest req) return sd_r1; } +/* ACMD41 */ +static sd_rsp_type_t sd_acmd_SD_APP_OP_COND(SDState *sd, SDRequest req) +{ + if (sd->state != sd_idle_state) { + return sd_invalid_state_for_cmd(sd, req); + } + + /* + * If it's the first ACMD41 since reset, we need to decide + * whether to power up. If this is not an enquiry ACMD41, + * we immediately report power on and proceed below to the + * ready state, but if it is, we set a timer to model a + * delay for power up. This works around a bug in EDK2 + * UEFI, which sends an initial enquiry ACMD41, but + * assumes that the card is in ready state as soon as it + * sees the power up bit set. + */ + if (!FIELD_EX32(sd->ocr, OCR, CARD_POWER_UP)) { + if ((req.arg & ACMD41_ENQUIRY_MASK) != 0) { + timer_del(sd->ocr_power_timer); + sd_ocr_powerup(sd); + } else { + trace_sdcard_inquiry_cmd41(); + if (!timer_pending(sd->ocr_power_timer)) { + timer_mod_ns(sd->ocr_power_timer, + (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + + OCR_POWER_DELAY_NS)); + } + } + } + + if (FIELD_EX32(sd->ocr & req.arg, OCR, VDD_VOLTAGE_WINDOW)) { + /* + * We accept any voltage. 10000 V is nothing. + * + * Once we're powered up, we advance straight to ready state + * unless it's an enquiry ACMD41 (bits 23:0 == 0). + */ + sd->state = sd_ready_state; + } + + return sd_r3; +} + static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req) { uint64_t addr; @@ -1812,43 +1856,6 @@ static sd_rsp_type_t sd_app_command(SDState *sd, } switch (req.cmd) { - case 41: /* ACMD41: SD_APP_OP_COND */ - if (sd->state != sd_idle_state) { - break; - } - /* If it's the first ACMD41 since reset, we need to decide - * whether to power up. If this is not an enquiry ACMD41, - * we immediately report power on and proceed below to the - * ready state, but if it is, we set a timer to model a - * delay for power up. This works around a bug in EDK2 - * UEFI, which sends an initial enquiry ACMD41, but - * assumes that the card is in ready state as soon as it - * sees the power up bit set. */ - if (!FIELD_EX32(sd->ocr, OCR, CARD_POWER_UP)) { - if ((req.arg & ACMD41_ENQUIRY_MASK) != 0) { - timer_del(sd->ocr_power_timer); - sd_ocr_powerup(sd); - } else { - trace_sdcard_inquiry_cmd41(); - if (!timer_pending(sd->ocr_power_timer)) { - timer_mod_ns(sd->ocr_power_timer, - (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - + OCR_POWER_DELAY_NS)); - } - } - } - - if (FIELD_EX32(sd->ocr & req.arg, OCR, VDD_VOLTAGE_WINDOW)) { - /* We accept any voltage. 10000 V is nothing. - * - * Once we're powered up, we advance straight to ready state - * unless it's an enquiry ACMD41 (bits 23:0 == 0). - */ - sd->state = sd_ready_state; - } - - return sd_r3; - case 42: /* ACMD42: SET_CLR_CARD_DETECT */ switch (sd->state) { case sd_transfer_state: @@ -2379,6 +2386,7 @@ static const SDProto sd_proto_sd = { [13] = {8, sd_adtc, "SD_STATUS", sd_acmd_SD_STATUS}, [22] = {8, sd_adtc, "SEND_NUM_WR_BLOCKS", sd_acmd_SEND_NUM_WR_BLOCKS}, [23] = {8, sd_ac, "SET_WR_BLK_ERASE_COUNT", sd_acmd_SET_WR_BLK_ERASE_COUNT}, + [41] = {8, sd_bcr, "SD_APP_OP_COND", sd_acmd_SD_APP_OP_COND}, }, };
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> --- hw/sd/sd.c | 82 ++++++++++++++++++++++++++++++------------------------ 1 file changed, 45 insertions(+), 37 deletions(-)