Date: Wed, 22 Jul 2020 19:04:45 +0000 (UTC) From: Emmanuel Vadot <manu@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r363427 - in head/sys/cam: . mmc Message-ID: <202007221904.06MJ4j7l089096@repo.freebsd.org>
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Author: manu Date: Wed Jul 22 19:04:45 2020 New Revision: 363427 URL: https://svnweb.freebsd.org/changeset/base/363427 Log: mmccam: Add support for 1.8V sdcard If the card reports that it support 1.8V signaling switch to this voltage. While here update the list of mode for mmccam. Submitted by: kibab Modified: head/sys/cam/cam_ccb.h head/sys/cam/mmc/mmc_xpt.c Modified: head/sys/cam/cam_ccb.h ============================================================================== --- head/sys/cam/cam_ccb.h Wed Jul 22 18:33:36 2020 (r363426) +++ head/sys/cam/cam_ccb.h Wed Jul 22 19:04:45 2020 (r363427) @@ -1046,14 +1046,41 @@ struct ccb_trans_settings_mmc { #define MMC_PM (1 << 5) #define MMC_BT (1 << 6) #define MMC_BM (1 << 7) +#define MMC_VCCQ (1 << 8) uint32_t ios_valid; /* The folowing is used only for GET_TRAN_SETTINGS */ uint32_t host_ocr; int host_f_min; int host_f_max; -#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can do 4-bit data transfers */ -#define MMC_CAP_8_BIT_DATA (1 << 1) /* Can do 8-bit data transfers */ -#define MMC_CAP_HSPEED (1 << 2) /* Can do High Speed transfers */ +/* Copied from sys/dev/mmc/bridge.h */ +#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can do 4-bit data transfers */ +#define MMC_CAP_8_BIT_DATA (1 << 1) /* Can do 8-bit data transfers */ +#define MMC_CAP_HSPEED (1 << 2) /* Can do High Speed transfers */ +#define MMC_CAP_BOOT_NOACC (1 << 4) /* Cannot access boot partitions */ +#define MMC_CAP_WAIT_WHILE_BUSY (1 << 5) /* Host waits for busy responses */ +#define MMC_CAP_UHS_SDR12 (1 << 6) /* Can do UHS SDR12 */ +#define MMC_CAP_UHS_SDR25 (1 << 7) /* Can do UHS SDR25 */ +#define MMC_CAP_UHS_SDR50 (1 << 8) /* Can do UHS SDR50 */ +#define MMC_CAP_UHS_SDR104 (1 << 9) /* Can do UHS SDR104 */ +#define MMC_CAP_UHS_DDR50 (1 << 10) /* Can do UHS DDR50 */ +#define MMC_CAP_MMC_DDR52_120 (1 << 11) /* Can do eMMC DDR52 at 1.2 V */ +#define MMC_CAP_MMC_DDR52_180 (1 << 12) /* Can do eMMC DDR52 at 1.8 V */ +#define MMC_CAP_MMC_DDR52 (MMC_CAP_MMC_DDR52_120 | MMC_CAP_MMC_DDR52_180) +#define MMC_CAP_MMC_HS200_120 (1 << 13) /* Can do eMMC HS200 at 1.2 V */ +#define MMC_CAP_MMC_HS200_180 (1 << 14) /* Can do eMMC HS200 at 1.8 V */ +#define MMC_CAP_MMC_HS200 (MMC_CAP_MMC_HS200_120| MMC_CAP_MMC_HS200_180) +#define MMC_CAP_MMC_HS400_120 (1 << 15) /* Can do eMMC HS400 at 1.2 V */ +#define MMC_CAP_MMC_HS400_180 (1 << 16) /* Can do eMMC HS400 at 1.8 V */ +#define MMC_CAP_MMC_HS400 (MMC_CAP_MMC_HS400_120 | MMC_CAP_MMC_HS400_180) +#define MMC_CAP_MMC_HSX00_120 (MMC_CAP_MMC_HS200_120 | MMC_CAP_MMC_HS400_120) +#define MMC_CAP_MMC_ENH_STROBE (1 << 17) /* Can do eMMC Enhanced Strobe */ +#define MMC_CAP_SIGNALING_120 (1 << 18) /* Can do signaling at 1.2 V */ +#define MMC_CAP_SIGNALING_180 (1 << 19) /* Can do signaling at 1.8 V */ +#define MMC_CAP_SIGNALING_330 (1 << 20) /* Can do signaling at 3.3 V */ +#define MMC_CAP_DRIVER_TYPE_A (1 << 21) /* Can do Driver Type A */ +#define MMC_CAP_DRIVER_TYPE_C (1 << 22) /* Can do Driver Type C */ +#define MMC_CAP_DRIVER_TYPE_D (1 << 23) /* Can do Driver Type D */ + uint32_t host_caps; uint32_t host_max_data; }; Modified: head/sys/cam/mmc/mmc_xpt.c ============================================================================== --- head/sys/cam/mmc/mmc_xpt.c Wed Jul 22 18:33:36 2020 (r363426) +++ head/sys/cam/mmc/mmc_xpt.c Wed Jul 22 19:04:45 2020 (r363427) @@ -167,6 +167,7 @@ typedef struct { union ccb saved_ccb; uint32_t flags; #define PROBE_FLAG_ACMD_SENT 0x1 /* CMD55 is sent, card expects ACMD */ +#define PROBE_FLAG_HOST_CAN_DO_18V 0x2 /* Host can do 1.8V signaling */ uint8_t acmd41_count; /* how many times ACMD41 has been issued */ struct cam_periph *periph; } mmcprobe_softc; @@ -457,6 +458,9 @@ mmc_print_ident(struct mmc_params *ident_data) sbuf_printf(sb, "%sSDIO", space ? " " : ""); space = true; } + if (ident_data->card_features & CARD_FEATURE_18V) { + sbuf_printf(sb, "%s1.8-Signaling", space ? " " : ""); + } sbuf_printf(sb, ">\n"); if (ident_data->card_features & CARD_FEATURE_MEMORY) @@ -636,6 +640,9 @@ mmcprobe_start(struct cam_periph *periph, union ccb *s init_standard_ccb(start_ccb, XPT_GET_TRAN_SETTINGS); xpt_action(start_ccb); + uint32_t host_caps = cts->host_caps; + if (host_caps & MMC_CAP_SIGNALING_180) + softc->flags |= PROBE_FLAG_HOST_CAN_DO_18V; uint32_t hv = mmc_highest_voltage(cts->host_ocr); init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS); cts->ios.vdd = hv; @@ -1008,6 +1015,18 @@ mmcprobe_done(struct cam_periph *periph, union ccb *do CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("Card supports 1.8V signaling\n")); mmcp->card_features |= CARD_FEATURE_18V; + if (softc->flags & PROBE_FLAG_HOST_CAN_DO_18V) { + CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE, + ("Host supports 1.8V signaling. Switch voltage!\n")); + done_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS; + done_ccb->ccb_h.flags = CAM_DIR_NONE; + done_ccb->ccb_h.retry_count = 0; + done_ccb->ccb_h.timeout = 100; + done_ccb->ccb_h.cbfcnp = NULL; + done_ccb->cts.proto_specific.mmc.ios.vccq = vccq_180; + done_ccb->cts.proto_specific.mmc.ios_valid = MMC_VCCQ; + xpt_action(done_ccb); + } } } else { CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
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