Jaison, Thank you for continuing to work on UHS-II stuff. On Tue, Aug 31, 2021 at 07:02:27PM +0800, Jason Lai wrote: > From: Jason Lai <jason.lai@xxxxxxxxxxxxxxxxxxx> > > From: Jason Lai <jason.lai@xxxxxxxxxxxxxxxxxxx> > > UHS-II card initialization flow is divided into 2 categories: PHY & Card. > Part 1 - PHY Initialization: > Every host controller may need their own avtivation operation > to establish LINK between controller and card. So we add a new > member function(uhs2_detect_init) in struct mmc_host_ops for host > controller use. > Part 2 - Card Initialization: > This part can be divided into 6 substeps. > 1. Send UHS-II CCMD DEVICE_INIT to card. > 2. Send UHS-II CCMD ENUMERATE to card. > 3. Send UHS-II Native Read CCMD to obtain capabilities in CFG_REG > of card. > 4. Host compares capabilities of host controller and card, > then write the negotiated values to Setting field in CFG_REG > of card through UHS-II Native Write CCMD. > 5. Switch host controller's clock to Range B if it is supported > by both host controller and card. > 6. Execute legacy SD initialization flow. > > Signed-off-by: Jason Lai <jason.lai@xxxxxxxxxxxxxxxxxxx> > --- > drivers/mmc/core/sd_uhs2.c | 918 +++++++++++++++++++++++++++++++++++-- > 1 file changed, 868 insertions(+), 50 deletions(-) > > diff --git a/drivers/mmc/core/sd_uhs2.c b/drivers/mmc/core/sd_uhs2.c > index 24aa51a6d..d9ceee20d 100644 > --- a/drivers/mmc/core/sd_uhs2.c > +++ b/drivers/mmc/core/sd_uhs2.c > @@ -3,6 +3,7 @@ > * Copyright (C) 2021 Linaro Ltd > * > * Author: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > + * Author: Jason Lai <jason.lai@xxxxxxxxxxxxxxxxxxx> Just one comment: I think that most of the code added here still came from Intel's original patch[1]. So you should give them credit for their contribution. -Takahiro Akashi [1] https://lore.kernel.org/linux-mmc/1419672479-30852-2-git-send-email-yi.y.sun@xxxxxxxxx/ > * > * Support for SD UHS-II cards > */ > @@ -10,29 +11,37 @@ > > #include <linux/mmc/host.h> > #include <linux/mmc/card.h> > +#include <linux/mmc/sd_uhs2.h> > > #include "core.h" > #include "bus.h" > #include "sd.h" > #include "mmc_ops.h" > +#include "sd_uhs2.h" > > static const unsigned int sd_uhs2_freqs[] = { 52000000, 26000000 }; > > -static int sd_uhs2_set_ios(struct mmc_host *host) > +static void sd_uhs2_set_ios(struct mmc_host *host) > { > struct mmc_ios *ios = &host->ios; > > - return host->ops->uhs2_set_ios(host, ios); > + pr_debug("%s: clock=%uHz, bus_mode=%u, power_mode=%u, ", > + mmc_hostname(host), ios->clock, ios->bus_mode, > + ios->power_mode); > + pr_debug("cs=%u, Vdd=%u, width=%u, timing=%u\n", > + ios->chip_select, ios->vdd, 1 << ios->bus_width, > + ios->timing); > + > + host->ops->uhs2_set_ios(host, ios); > } > > -static int sd_uhs2_power_up(struct mmc_host *host) > +static void sd_uhs2_power_up(struct mmc_host *host) > { > host->ios.vdd = fls(host->ocr_avail) - 1; > host->ios.clock = host->f_init; > host->ios.timing = MMC_TIMING_SD_UHS2; > host->ios.power_mode = MMC_POWER_UP; > > - return sd_uhs2_set_ios(host); > + sd_uhs2_set_ios(host); > } > > static void sd_uhs2_power_off(struct mmc_host *host) > @@ -45,6 +54,43 @@ static void sd_uhs2_power_off(struct mmc_host *host) > sd_uhs2_set_ios(host); > } > > +/* > + * uhs2_cmd_assemble - assemble and build up uhs2 command > + * @cmd: MMC command > + * @uhs2_cmd: UHS2 command > + * @header: Value of packet header > + * @arg: Argument of packet > + * @payload: Payload of packet > + * @plen: Payload length > + * @resp: Buffer for response > + * @resp_len: Response buffer length > + * > + * resp is inputted outside which should be a variable created by caller > + * so caller should handle it. For SD command, there is no uhs2_resp and > + * response should be stored in resp of mmc_command. > + */ > +static void uhs2_cmd_assemble(struct mmc_command *cmd, > + struct uhs2_command *uhs2_cmd, > + u16 header, u16 arg, > + u32 *payload, u8 plen, u8 *resp, u8 resp_len) > +{ > + uhs2_cmd->header = header; > + uhs2_cmd->arg = arg; > + uhs2_cmd->payload = payload; > + uhs2_cmd->payload_len = plen * sizeof(u32); > + uhs2_cmd->packet_len = uhs2_cmd->payload_len + 4; > + > + cmd->uhs2_cmd = uhs2_cmd; > + cmd->uhs2_resp = resp; > + cmd->uhs2_resp_len = resp_len; > + > + pr_debug("%s: uhs2_cmd: header=0x%x arg=0x%x\n", > + __func__, uhs2_cmd->header, uhs2_cmd->arg); > + pr_debug("%s: payload_len=%d packet_len=%d resp_len=%d\n", > + __func__, uhs2_cmd->payload_len, uhs2_cmd->packet_len, > + cmd->uhs2_resp_len); > +} > + > /* > * Run the phy initialization sequence, which mainly relies on the UHS-II host > * to check that we reach the expected electrical state, between the host and > @@ -52,16 +98,104 @@ static void sd_uhs2_power_off(struct mmc_host *host) > */ > static int sd_uhs2_phy_init(struct mmc_host *host) > { > + int err = 0; > + > + /* > + * Every host controller can assign its own function which is used > + * to initialize PHY. > + */ > + if (host->ops->uhs2_detect_init) { > + err = host->ops->uhs2_detect_init(host) > + if (err) { > + pr_err("%s: fail to detect UHS2!\n", > + mmc_hostname(host)); > + err = UHS2_PHY_INIT_ERR; > + } > + } > + > return 0; > } > > /* > * Do the early initialization of the card, by sending the device init > -roadcast > - * command and wait for the process to be completed. > + * broadcast command and wait for the process to be completed. > */ > static int sd_uhs2_dev_init(struct mmc_host *host) > { > + struct mmc_command cmd = {0}; > + struct uhs2_command uhs2_cmd = {}; > + u32 cnt; > + u32 dap, gap, gap1; > + u16 header = 0, arg = 0; > + u32 payload[1]; > + u8 plen = 1; > + u8 gd = 0, cf = 1; > + u8 resp[6] = {0}; > + u8 resp_len = 6; > + int err; > + > + dap = host->uhs2_caps.dap; > + gap = host->uhs2_caps.gap; > + > + header = UHS2_NATIVE_PACKET | UHS2_PACKET_TYPE_CCMD; > + arg = ((UHS2_DEV_CMD_DEVICE_INIT & 0xFF) << 8) | > + UHS2_NATIVE_CMD_WRITE | > + UHS2_NATIVE_CMD_PLEN_4B | > + (UHS2_DEV_CMD_DEVICE_INIT >> 8); > + > + /* need this for some cards */ > + cmd.busy_timeout = 1000; > + > + for (cnt = 0; cnt < 30; cnt++) { > + payload[0] = ((dap & 0xF) << 12) | > + (cf << 11) | > + ((gd & 0xF) << 4) | > + (gap & 0xF); > + > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, > + payload, plen, resp, resp_len); > + > + DBG("Begin DEVICE_INIT, header=0x%x, arg=0x%x, payload=0x%x.\n", > + header, arg, payload[0]); > + > + DBG("Sending DEVICE_INIT. Count = %d\n", cnt); > + err = mmc_wait_for_cmd(host, &cmd, 0); > + > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + if (IS_ENABLED(CONFIG_MMC_DEBUG)) { > + int i; > + > + pr_warn("%s: DEVICE_INIT response is: ", > + mmc_hostname(host)); > + for (i = 0; i < resp_len; i++) > + pr_warn("0x%x ", resp[i]); > + pr_warn("\n"); > + } > + > + if (resp[3] != (UHS2_DEV_CMD_DEVICE_INIT & 0xFF)) { > + pr_err("%s: DEVICE_INIT response is wrong!\n", > + mmc_hostname(host)); > + return -EIO; > + } > + > + if (resp[5] & 0x8) { > + DBG("CF is set, device is initialized!\n"); > + host->group_desc = gd; > + break; > + } > + gap1 = resp[4] & 0x0F; > + if (gap == gap1) > + gd++; > + } > + if (cnt == 30) { > + pr_err("%s: DEVICE_INIT fail, already 30 times!\n", > + mmc_hostname(host)); > + return -EIO; > + } > + > return 0; > } > > @@ -70,8 +204,60 @@ static int sd_uhs2_dev_init(struct mmc_host *host) > * Note that, we currently support only the point to point connection, which > * means only one card can be attached per host/slot. > */ > -static int sd_uhs2_enum(struct mmc_host *host, u32 *node_id) > +static int sd_uhs2_enum(struct mmc_host *host) > { > + struct mmc_command cmd = {0}; > + struct uhs2_command uhs2_cmd = {}; > + u16 header = 0, arg = 0; > + u32 payload[1]; > + u8 plen = 1; > + u8 id_f = 0xF, id_l = 0x0; > + u8 resp[8] = {0}; > + u8 resp_len = 8; > + int err; > + > + header = UHS2_NATIVE_PACKET | UHS2_PACKET_TYPE_CCMD; > + arg = ((UHS2_DEV_CMD_ENUMERATE & 0xFF) << 8) | > + UHS2_NATIVE_CMD_WRITE | > + UHS2_NATIVE_CMD_PLEN_4B | > + (UHS2_DEV_CMD_ENUMERATE >> 8); > + > + payload[0] = (id_f << 4) | id_l; > + > + DBG("Begin ENUMERATE, header=0x%x, arg=0x%x, payload=0x%x.\n", > + header, arg, payload[0]); > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, payload, plen, > + resp, resp_len); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + if (IS_ENABLED(CONFIG_MMC_DEBUG)) { > + int i; > + > + pr_warn("%s: ENUMERATE response is: ", mmc_hostname(host)); > + for (i = 0; i < resp_len; i++) > + pr_warn("0x%x ", resp[i]); > + pr_warn("\n"); > + } > + > + if (resp[3] != (UHS2_DEV_CMD_ENUMERATE & 0xFF)) { > + pr_err("%s: ENUMERATE response is wrong!\n", > + mmc_hostname(host)); > + return -EIO; > + } > + > + id_f = (resp[4] >> 4) & 0xF; > + id_l = resp[4] & 0xF; > + DBG("id_f = %d, id_l = %d.\n", id_f, id_l); > + DBG("Enumerate Cmd Completed. No. of Devices connected = %d\n", > + id_l - id_f + 1); > + host->uhs2_dev_prop.node_id = id_f; > + > return 0; > } > > @@ -80,8 +266,158 @@ static int sd_uhs2_enum(struct mmc_host *host, u32 *node_id) > * commands and by parsing the responses. Store a copy of the relevant data in > * card->uhs2_config. > */ > -static int sd_uhs2_config_read(struct mmc_host *host, struct mmc_card *card) > +static int sd_uhs2_config_read(struct mmc_host *host) > { > + struct mmc_command cmd = {0}; > + struct uhs2_command uhs2_cmd = {}; > + u16 header = 0, arg = 0; > + u32 cap; > + int err; > + > + DBG("INQUIRY_CFG: read Generic Caps.\n"); > + header = UHS2_NATIVE_PACKET | > + UHS2_PACKET_TYPE_CCMD | > + host->uhs2_dev_prop.node_id; > + arg = ((UHS2_DEV_CONFIG_GEN_CAPS & 0xFF) << 8) | > + UHS2_NATIVE_CMD_READ | > + UHS2_NATIVE_CMD_PLEN_4B | > + (UHS2_DEV_CONFIG_GEN_CAPS >> 8); > + > + pr_debug("Begin INQUIRY_CFG, header=0x%x, arg=0x%x.\n", header, arg); > + /* There is no payload because per spec, there should be > + * no payload field for read CCMD. > + * Plen is set in arg. Per spec, plen for read CCMD > + * represents the len of read data which is assigned in payload > + * of following RES (p136). > + */ > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, NULL, 0, NULL, 0); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + if (IS_ENABLED(CONFIG_MMC_DEBUG)) { > + int i; > + > + pr_warn("%s: INQUIRY_CFG generic response is: ", > + mmc_hostname(host)); > + for (i = 0; i < 2; i++) > + pr_warn("0x%x ", cmd.resp[i]); > + pr_warn("\n"); > + } > + > + cap = cmd.resp[0]; > + pr_debug("Device Generic Caps (0-31) is: 0x%x.\n", cap); > + host->uhs2_dev_prop.n_lanes = (cap >> UHS2_DEV_CONFIG_N_LANES_POS) & > + UHS2_DEV_CONFIG_N_LANES_MASK; > + host->uhs2_dev_prop.dadr_len = (cap >> UHS2_DEV_CONFIG_DADR_POS) & > + UHS2_DEV_CONFIG_DADR_MASK; > + host->uhs2_dev_prop.app_type = (cap >> UHS2_DEV_CONFIG_APP_POS) & > + UHS2_DEV_CONFIG_APP_MASK; > + > + pr_debug("INQUIRY_CFG: read PHY Caps.\n"); > + arg = ((UHS2_DEV_CONFIG_PHY_CAPS & 0xFF) << 8) | > + UHS2_NATIVE_CMD_READ | > + UHS2_NATIVE_CMD_PLEN_8B | > + (UHS2_DEV_CONFIG_PHY_CAPS >> 8); > + > + pr_debug("Begin INQUIRY_CFG, header=0x%x, arg=0x%x.\n", header, arg); > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, NULL, 0, NULL, 0); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + if (IS_ENABLED(CONFIG_MMC_DEBUG)) { > + int i; > + > + pr_warn("%s: INQUIRY_CFG PHY response is: ", > + mmc_hostname(host)); > + for (i = 0; i < 2; i++) > + pr_warn("0x%x ", cmd.resp[i]); > + pr_warn("\n"); > + } > + > + cap = cmd.resp[0]; > + pr_debug("Device PHY Caps (0-31) is: 0x%x.\n", cap); > + host->uhs2_dev_prop.phy_minor_rev = cap & > + UHS2_DEV_CONFIG_PHY_MINOR_MASK; > + host->uhs2_dev_prop.phy_major_rev = (cap >> > + UHS2_DEV_CONFIG_PHY_MAJOR_POS) & > + UHS2_DEV_CONFIG_PHY_MAJOR_MASK; > + host->uhs2_dev_prop.can_hibernate = (cap >> > + UHS2_DEV_CONFIG_CAN_HIBER_POS) & > + UHS2_DEV_CONFIG_CAN_HIBER_MASK; > + > + cap = cmd.resp[1]; > + pr_debug("Device PHY Caps (32-63) is: 0x%x.\n", cap); > + host->uhs2_dev_prop.n_lss_sync = cap & UHS2_DEV_CONFIG_N_LSS_SYN_MASK; > + host->uhs2_dev_prop.n_lss_dir = (cap >> > + UHS2_DEV_CONFIG_N_LSS_DIR_POS) & > + UHS2_DEV_CONFIG_N_LSS_DIR_MASK; > + if (host->uhs2_dev_prop.n_lss_sync == 0) > + host->uhs2_dev_prop.n_lss_sync = 16 << 2; > + else > + host->uhs2_dev_prop.n_lss_sync <<= 2; > + > + if (host->uhs2_dev_prop.n_lss_dir == 0) > + host->uhs2_dev_prop.n_lss_dir = 16 << 3; > + else > + host->uhs2_dev_prop.n_lss_dir <<= 3; > + > + pr_debug("INQUIRY_CFG: read LINK-TRAN Caps.\n"); > + arg = ((UHS2_DEV_CONFIG_LINK_TRAN_CAPS & 0xFF) << 8) | > + UHS2_NATIVE_CMD_READ | > + UHS2_NATIVE_CMD_PLEN_8B | > + (UHS2_DEV_CONFIG_LINK_TRAN_CAPS >> 8); > + > + pr_debug("Begin INQUIRY_CFG, header=0x%x, arg=0x%x.\n", header, arg); > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, NULL, 0, NULL, 0); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + if (IS_ENABLED(CONFIG_MMC_DEBUG)) { > + int i; > + > + pr_warn("%s: INQUIRY_CFG Link-Tran response is: ", > + mmc_hostname(host)); > + for (i = 0; i < 2; i++) > + pr_warn("0x%x ", cmd.resp[i]); > + pr_warn("\n"); > + } > + > + cap = cmd.resp[0]; > + DBG("Device LINK-TRAN Caps (0-31) is: 0x%x.\n", cap); > + host->uhs2_dev_prop.link_minor_rev = cap & > + UHS2_DEV_CONFIG_LT_MINOR_MASK; > + host->uhs2_dev_prop.link_major_rev = (cap >> > + UHS2_DEV_CONFIG_LT_MAJOR_POS) & > + UHS2_DEV_CONFIG_LT_MAJOR_MASK; > + host->uhs2_dev_prop.n_fcu = (cap >> UHS2_DEV_CONFIG_N_FCU_POS) & > + UHS2_DEV_CONFIG_N_FCU_MASK; > + host->uhs2_dev_prop.dev_type = (cap >> UHS2_DEV_CONFIG_DEV_TYPE_POS) & > + UHS2_DEV_CONFIG_DEV_TYPE_MASK; > + host->uhs2_dev_prop.maxblk_len = (cap >> > + UHS2_DEV_CONFIG_MAX_BLK_LEN_POS) & > + UHS2_DEV_CONFIG_MAX_BLK_LEN_MASK; > + > + cap = cmd.resp[1]; > + DBG("Device LINK-TRAN Caps (32-63) is: 0x%x.\n", cap); > + host->uhs2_dev_prop.n_data_gap = cap & UHS2_DEV_CONFIG_N_DATA_GAP_MASK; > + if (host->uhs2_dev_prop.n_fcu == 0) > + host->uhs2_dev_prop.n_fcu = 256; > + > return 0; > } > > @@ -89,15 +425,393 @@ static int sd_uhs2_config_read(struct mmc_host *host, struct mmc_card *card) > * Based on the card's and host's UHS-II capabilities, let's update the > * configuration of the card and the host. This may also include to move to a > * greater speed range/mode. Depending on the updated configuration, we may > -eed > - * to do a soft reset of the card via sending it a GO_DORMANT_STATE command. > + * need to do a soft reset of the card via sending it a GO_DORMANT_STATE command. > * > - * In the final step, let's check if the card signals "config completion", > -hich > - * indicates that the card has moved from config state into active state. > + * In the final step, let's check if the card signals "config completion", > + * which indicates that the card has moved from config state into active state. > */ > -static int sd_uhs2_config_write(struct mmc_host *host, struct mmc_card *card) > +static int sd_uhs2_config_write(struct mmc_host *host) > +{ > + struct mmc_command cmd = {0}; > + struct uhs2_command uhs2_cmd = {}; > + u16 header = 0, arg = 0; > + u32 payload[2]; > + u8 nMinDataGap; > + u8 plen; > + u8 try; > + int err; > + u8 resp[5] = {0}; > + u8 resp_len = 5; > + > + pr_debug("SET_COMMON_CFG: write Generic Settings.\n"); > + header = UHS2_NATIVE_PACKET | > + UHS2_PACKET_TYPE_CCMD | host->uhs2_dev_prop.node_id; > + arg = ((UHS2_DEV_CONFIG_GEN_SET & 0xFF) << 8) | > + UHS2_NATIVE_CMD_WRITE | > + UHS2_NATIVE_CMD_PLEN_8B | > + (UHS2_DEV_CONFIG_GEN_SET >> 8); > + > + if (host->uhs2_dev_prop.n_lanes == UHS2_DEV_CONFIG_2L_HD_FD && > + host->uhs2_caps.n_lanes == UHS2_DEV_CONFIG_2L_HD_FD) { > + /* Support HD */ > + pr_debug("Both Host and device support 2L-HD.\n"); > + host->flags |= MMC_UHS2_2L_HD; > + host->uhs2_caps.n_lanes_set = UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD; > + host->uhs2_dev_prop.n_lanes_set = > + UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD; > + nMinDataGap = 1; > + } else { > + /* Only support 2L-FD so far */ > + host->flags &= ~MMC_UHS2_2L_HD; > + host->uhs2_caps.n_lanes_set = UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD; > + host->uhs2_dev_prop.n_lanes_set = > + UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD; > + nMinDataGap = 3; > + } > + > + plen = 2; > + payload[0] = host->uhs2_dev_prop.n_lanes_set << > + UHS2_DEV_CONFIG_N_LANES_POS; > + payload[1] = 0; > + payload[0] = cpu_to_be32(payload[0]); > + payload[1] = cpu_to_be32(payload[1]); > + > + pr_debug("Begin SET_COMMON_CFG, header=0x%x, arg=0x%x\n", header, arg); > + pr_debug("UHS2 write Generic Settings %08x %08x\n", > + payload[0], payload[1]); > + pr_debug("flags=%08x, ", host->flags); > + pr_debug("host_caps.n_lanes_set%x, ", host->uhs2_caps.n_lanes_set); > + pr_debug("dev_prop.n_lanes_set=%x\n", host->uhs2_dev_prop.n_lanes_set); > + > + /* > + * There is no payload because per spec, there should be > + * no payload field for read CCMD. > + * Plen is set in arg. Per spec, plen for read CCMD > + * represents the len of read data which is assigned in payload > + * of following RES (p136). > + */ > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, payload, plen, NULL, 0); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + pr_debug("SET_COMMON_CFG: PHY Settings.\n"); > + arg = ((UHS2_DEV_CONFIG_PHY_SET & 0xFF) << 8) | > + UHS2_NATIVE_CMD_WRITE | > + UHS2_NATIVE_CMD_PLEN_8B | > + (UHS2_DEV_CONFIG_PHY_SET >> 8); > + > + for (try = 0; try < 2; try++) { > + plen = 2; > + > + if (host->uhs2_caps.speed_range == > + UHS2_DEV_CONFIG_PHY_SET_SPEED_B) { > + host->flags |= MMC_UHS2_SPEED_B; > + host->uhs2_dev_prop.speed_range_set = > + UHS2_DEV_CONFIG_PHY_SET_SPEED_B; > + pr_debug("set dev_prop.speed_range_set to SPEED_B\n"); > + } else { > + host->uhs2_dev_prop.speed_range_set = > + UHS2_DEV_CONFIG_PHY_SET_SPEED_A; > + host->flags &= ~MMC_UHS2_SPEED_B; > + pr_debug("set dev_prop.speed_range_set to SPEED_A\n"); > + } > + > + payload[0] = host->uhs2_dev_prop.speed_range_set << > + UHS2_DEV_CONFIG_PHY_SET_SPEED_POS; > + > + host->uhs2_dev_prop.n_lss_sync_set = > + (min(host->uhs2_dev_prop.n_lss_sync, > + host->uhs2_caps.n_lss_sync) >> 2) & > + UHS2_DEV_CONFIG_N_LSS_SYN_MASK; > + host->uhs2_caps.n_lss_sync_set = > + host->uhs2_dev_prop.n_lss_sync_set; > + > + if (try == 0) { > + host->uhs2_caps.n_lss_dir_set = > + (host->uhs2_dev_prop.n_lss_dir >> 3) & > + UHS2_DEV_CONFIG_N_LSS_DIR_MASK; > + host->uhs2_dev_prop.n_lss_dir_set = > + ((host->uhs2_caps.n_lss_dir >> 3) + 1) & > + UHS2_DEV_CONFIG_N_LSS_DIR_MASK; > + } else { > + host->uhs2_dev_prop.n_lss_dir_set = > + (max(host->uhs2_dev_prop.n_lss_dir, > + host->uhs2_caps.n_lss_dir) >> 3) & > + UHS2_DEV_CONFIG_N_LSS_DIR_MASK; > + host->uhs2_caps.n_lss_dir_set = > + host->uhs2_dev_prop.n_lss_dir_set; > + payload[1] = (host->uhs2_dev_prop.n_lss_dir_set << > + UHS2_DEV_CONFIG_N_LSS_DIR_POS) | > + host->uhs2_dev_prop.n_lss_sync_set; > + } > + > + payload[1] = (host->uhs2_dev_prop.n_lss_dir_set << > + UHS2_DEV_CONFIG_N_LSS_DIR_POS) | > + host->uhs2_dev_prop.n_lss_sync_set; > + payload[0] = cpu_to_be32(payload[0]); > + payload[1] = cpu_to_be32(payload[1]); > + > + pr_debug("UHS2 SET PHY Settings %08x %08x\n", > + payload[0], payload[1]); > + pr_debug("host->flags=%08x dev_prop.speed_range_set=%x\n", > + host->flags, > + host->uhs2_dev_prop.speed_range_set); > + pr_debug("dev_prop.n_lss_sync_set=%x host_caps.n_lss_sync_set=%x\n", > + host->uhs2_dev_prop.n_lss_sync_set, > + host->uhs2_caps.n_lss_sync_set); > + pr_debug("dev_prop.n_lss_dir_set=%x host_caps.n_lss_dir_set=%x\n", > + host->uhs2_dev_prop.n_lss_dir_set, > + host->uhs2_caps.n_lss_dir_set); > + > + pr_debug("Begin SET_COMMON_CFG header=0x%x arg=0x%x\n", > + header, arg); > + pr_debug("\t\tpayload[0]=0x%x payload[1]=0x%x\n", > + payload[0], payload[1]); > + > + resp_len = 4; > + memset(resp, 0, sizeof(resp)); > + > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, > + payload, plen, resp, resp_len); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + if (!(resp[2] & 0x80)) > + break; > + > + pr_debug("%s: %s: UHS2 SET PHY Settings fail, res= 0x%x!\n", > + mmc_hostname(host), __func__, resp[2]); > + } > + > + pr_debug("SET_COMMON_CFG: LINK-TRAN Settings.\n"); > + arg = ((UHS2_DEV_CONFIG_LINK_TRAN_SET & 0xFF) << 8) | > + UHS2_NATIVE_CMD_WRITE | > + UHS2_NATIVE_CMD_PLEN_8B | > + (UHS2_DEV_CONFIG_LINK_TRAN_SET >> 8); > + > + plen = 2; > + > + if (host->uhs2_dev_prop.app_type == UHS2_DEV_CONFIG_APP_SD_MEM) > + host->uhs2_dev_prop.maxblk_len_set = > + UHS2_DEV_CONFIG_LT_SET_MAX_BLK_LEN; > + else > + host->uhs2_dev_prop.maxblk_len_set = > + min(host->uhs2_dev_prop.maxblk_len, > + host->uhs2_caps.maxblk_len); > + host->uhs2_caps.maxblk_len_set = host->uhs2_dev_prop.maxblk_len_set; > + > + host->uhs2_dev_prop.n_fcu_set = > + min(host->uhs2_dev_prop.n_fcu, > + host->uhs2_caps.n_fcu); > + host->uhs2_caps.n_fcu_set = host->uhs2_dev_prop.n_fcu_set; > + > + host->uhs2_dev_prop.n_data_gap_set = > + max(nMinDataGap, host->uhs2_dev_prop.n_data_gap); > + > + host->uhs2_caps.n_data_gap_set = host->uhs2_dev_prop.n_data_gap_set; > + > + host->uhs2_caps.max_retry_set = 3; > + host->uhs2_dev_prop.max_retry_set = host->uhs2_caps.max_retry_set; > + > + payload[0] = (host->uhs2_dev_prop.maxblk_len_set << > + UHS2_DEV_CONFIG_MAX_BLK_LEN_POS) | > + (host->uhs2_dev_prop.max_retry_set << > + UHS2_DEV_CONFIG_LT_SET_MAX_RETRY_POS) | > + (host->uhs2_dev_prop.n_fcu_set << > + UHS2_DEV_CONFIG_N_FCU_POS); > + payload[1] = host->uhs2_dev_prop.n_data_gap_set; > + payload[0] = cpu_to_be32(payload[0]); > + payload[1] = cpu_to_be32(payload[1]); > + > + pr_debug("Begin SET_COMMON_CFG header=0x%x arg=0x%x\n", header, arg); > + pr_debug("\t\tpayload[0]=0x%x payload[1]=0x%x\n", > + payload[0], payload[1]); > + > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, payload, plen, NULL, 0); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + pr_debug("SET_COMMON_CFG: Set Config Completion.\n"); > + arg = ((UHS2_DEV_CONFIG_GEN_SET & 0xFF) << 8) | > + UHS2_NATIVE_CMD_WRITE | > + UHS2_NATIVE_CMD_PLEN_8B | > + (UHS2_DEV_CONFIG_GEN_SET >> 8); > + > + plen = 2; > + payload[0] = 0; > + payload[1] = UHS2_DEV_CONFIG_GEN_SET_CFG_COMPLETE; > + payload[0] = cpu_to_be32(payload[0]); > + payload[1] = cpu_to_be32(payload[1]); > + > + pr_debug("Begin SET_COMMON_CFG, "); > + pr_debug("header=0x%x, arg=0x%x, payload[0] = 0x%x.\n", > + header, arg, payload[0]); > + resp_len = 5; > + memset(resp, 0, sizeof(resp)); > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, payload, plen, > + resp, resp_len); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + /* Set host Config Setting registers */ > + if (!host->ops->uhs2_set_reg || > + host->ops->uhs2_set_reg(host, SET_CONFIG)) { > + pr_err("%s: %s: UHS2 SET_CONFIG fail!\n", > + mmc_hostname(host), __func__); > + return -EIO; > + } > + > + return 0; > +} > + > +static int uhs2_go_dormant(struct mmc_host *host, bool hibernate) > { > + struct mmc_command cmd = {0}; > + struct uhs2_command uhs2_cmd = {}; > + u16 header = 0, arg = 0; > + u32 payload[1]; > + u8 plen = 1; > + int err; > + > + /* Disable Normal INT */ > + if (!host->ops->uhs2_set_reg || > + host->ops->uhs2_set_reg(host, DISABLE_INT)) { > + pr_err("%s: %s: UHS2 DISABLE_INT fail!\n", > + mmc_hostname(host), __func__); > + return -EIO; > + } > + > + header = UHS2_NATIVE_PACKET | UHS2_PACKET_TYPE_CCMD | > + host->uhs2_dev_prop.node_id; > + > + arg = ((UHS2_DEV_CMD_GO_DORMANT_STATE & 0xFF) << 8) | > + UHS2_NATIVE_CMD_WRITE | > + UHS2_NATIVE_CMD_PLEN_4B | > + (UHS2_DEV_CMD_GO_DORMANT_STATE >> 8); > + > + if (hibernate) > + payload[0] = UHS2_DEV_CMD_DORMANT_HIBER; > + > + pr_debug("Begin GO_DORMANT_STATE, "); > + pr_debug("header=0x%x, arg=0x%x, payload=0x%x.\n", > + header, arg, payload[0]); > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, header, arg, payload, plen, NULL, 0); > + > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + /* Check Dormant State in Present */ > + if (!host->ops->uhs2_set_reg || > + host->ops->uhs2_set_reg(host, CHECK_DORMANT)) { > + pr_err("%s: %s: UHS2 GO_DORMANT_STATE fail!\n", > + mmc_hostname(host), __func__); > + return -EIO; > + } > + > + if (host->ops->uhs2_disable_clk) > + host->ops->uhs2_disable_clk(host); > + > + return 0; > +} > + > +static int uhs2_change_speed(struct mmc_host *host) > +{ > + int err; > + int timeout = 100; > + > + /* Change Speed Range at controller side. */ > + if (!host->ops->uhs2_set_reg || > + host->ops->uhs2_set_reg(host, SET_SPEED_B)) { > + pr_err("%s: %s: UHS2 SET_SPEED fail!\n", > + mmc_hostname(host), __func__); > + return -EIO; > + } > + > + err = uhs2_go_dormant(host, false); > + if (err) { > + pr_err("%s: %s: UHS2 GO_DORMANT_STATE fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + /* restore sd clock */ > + mmc_delay(5); > + if (host->ops->uhs2_enable_clk) > + host->ops->uhs2_enable_clk(host); > + > + /* Enable Normal INT */ > + if (!host->ops->uhs2_set_reg || > + host->ops->uhs2_set_reg(host, ENABLE_INT)) { > + pr_err("%s: %s: UHS2 ENABLE_INT fail!\n", > + mmc_hostname(host), __func__); > + return -EIO; > + } > + > + /* > + * According to UHS-II Addendum Version 1.01, chapter 6.2.3, > + * wait card switch to Active State > + */ > + header = UHS2_NATIVE_PACKET | > + UHS2_PACKET_TYPE_CCMD | host->uhs2_dev_prop.node_id; > + arg = ((UHS2_DEV_CONFIG_GEN_SET & 0xFF) << 8) | > + UHS2_NATIVE_CMD_READ | > + UHS2_NATIVE_CMD_PLEN_8B | > + (UHS2_DEV_CONFIG_GEN_SET >> 8); > + do { > + uhs2_cmd_assemble(&cmd, &uhs2_cmd, > + header, arg, > + NULL, 0, > + NULL, 0); > + err = mmc_wait_for_cmd(host, &cmd, 0); > + if (err) { > + pr_err("%s: %s: UHS2 CMD send fail, err= 0x%x!\n", > + mmc_hostname(host), __func__, err); > + return -EIO; > + } > + > + pr_debug("%s: Device Generic Settings Register=0x%x-0x%x\n", > + mmc_hostname(host), cmd.resp[0], cmd.resp[1]) > + if (cmd.resp[1] & UHS2_DEV_CONFIG_GEN_SET_CFG_COMPLETE) { > + pr_debug("%s: %s: UHS2 switch to range B OK\n", > + mmc_hostname(host), __func__); > + break; > + } > + > + timeout--; > + if (timeout == 0) { > + pr_err("%s: %s: UHS2 not switch to Active in 100ms.\n", > + mmc_hostname(host->mmc), __func__); > + return -EIO; > + } > + > + mmc_delay(1); > + > + } while (1); > + > return 0; > } > > @@ -108,8 +822,67 @@ static int sd_uhs2_config_write(struct mmc_host *host, struct mmc_card *card) > * be set through a legacy CMD6. Note that, the power limit that becomes set, > * survives a soft reset through the GO_DORMANT_STATE command. > */ > -static int sd_uhs2_legacy_init(struct mmc_host *host, struct mmc_card *card) > +static int sd_uhs2_legacy_init(struct mmc_host *host) > { > + int err; > + u32 ocr, rocr; > + > + WARN_ON(!host->claimed); > + > + /* Send CMD0 to reset SD card */ > + mmc_go_idle(host); > + > + /* Send CMD8 to communicate SD interface operation condition */ > + err = mmc_send_if_cond(host, host->ocr_avail); > + if (err) { > + pr_err("%s: %s: SEND_IF_COND fail!\n", > + mmc_hostname(host), __func__); > + return err; > + } > + > + /* > + * Get CID, send relative address, get CSD are the same as legacy > + * sd, call mmc_sd_init_card() in sd.c directly > + */ > + err = mmc_send_app_op_cond(host, 0, &ocr); > + if (err) { > + pr_err("%s: %s: SD_SEND_OP_COND fail!\n", > + mmc_hostname(host), __func__); > + return err; > + } > + > + if (host->ocr_avail_sd) > + host->ocr_avail = host->ocr_avail_sd; > + > + /* > + * Some SD cards claims an out of spec VDD voltage range. Let's treat > + * these bits as being in-valid and especially also bit7. > + */ > + ocr &= ~0x7FFF; > + rocr = mmc_select_voltage(host, ocr); > + > + /* > + * Some cards have zero value of rocr in UHS-II mode. Assign host's ocr > + * value to rocr. > + */ > + if (!rocr) { > + if (host->ocr_avail) { > + rocr = host->ocr_avail; > + } else { > + pr_err("%s: %s: there is no valid OCR.\n", > + mmc_hostname(host), __func__); > + return -EINVAL; > + } > + } > + > + /* > + * Get CID, send relative address, get CSD are the same as legacy > + * sd, call mmc_sd_init_card() in sd.c directly > + */ > + err = mmc_sd_init_card(host, rocr, NULL); > + if (err) { > + pr_err("%s: %s: mmc_sd_init_card() fail!\n", > + mmc_hostname(host), __func__); > + return err; > + } > + > return 0; > } > > @@ -120,42 +893,49 @@ static int sd_uhs2_legacy_init(struct mmc_host *host, struct mmc_card *card) > static int sd_uhs2_init_card(struct mmc_host *host) > { > struct mmc_card *card; > - u32 node_id; > int err; > > err = sd_uhs2_dev_init(host); > - if (err) > + if (err) { > + pr_err("%s: UHS2 DEVICE_INIT fail!\n", mmc_hostname(host)); > return err; > + } > > - err = sd_uhs2_enum(host, &node_id); > + err = sd_uhs2_enum(host); > + if (err) { > + pr_err("%s: UHS2 ENUMERATE fail!\n", mmc_hostname(host)); > + return err; > + } > + > + err = sd_uhs2_config_read(host); > if (err) > return err; > > - card = mmc_alloc_card(host, &sd_type); > - if (IS_ERR(card)) > - return PTR_ERR(card); > + err = sd_uhs2_config_write(host); > + if (err) > + return err; > > - card->uhs2_config.node_id = node_id; > - card->type = MMC_TYPE_SD; > + /* Delay some time to let card apply new configuration */ > + mmc_delay(10); > > - err = sd_uhs2_config_read(host, card); > - if (err) > - goto err; > + /* Change to Speed Range B if it is supported */ > + if (host->flags & MMC_UHS2_SPEED_B) { > + err = uhs2_change_speed(host); > + if (err) { > + pr_err("%s: %s: UHS2 uhs2_change_speed() fail!\n", > + mmc_hostname(host), __func__); > + return err; > + } > + } > > - err = sd_uhs2_config_write(host, card); > - if (err) > - goto err; > + host->flags |= MMC_UHS2_INITIALIZED; > > - err = sd_uhs2_legacy_init(host, card); > + err = sd_uhs2_legacy_init(host); > if (err) > - goto err; > + return err; > > host->card = card; > return 0; > - > -err: > - mmc_remove_card(card); > - return err; > } > > static void sd_uhs2_remove(struct mmc_host *host) > @@ -234,38 +1014,66 @@ static int sd_uhs2_attach(struct mmc_host *host) > int err; > > err = sd_uhs2_power_up(host); > - if (err) > + if (err) { > + pr_debug("%s: %s: sd_uhs2_power_up() fail!\n", > + mmc_hostname(host), __func__); > goto err; > + } > > err = sd_uhs2_phy_init(host); > - if (err) > + if (err) { > + pr_debug("%s: %s: sd_uhs2_phy_init() fail!\n", > + mmc_hostname(host), __func__); > goto err; > + } > > err = sd_uhs2_init_card(host); > - if (err) > + if (err) { > + pr_debug("%s: %s: sd_uhs2_init_card() fail!\n", > + mmc_hostname(host), __func__); > goto err; > + } > > mmc_attach_bus(host, &sd_uhs2_ops); > > mmc_release_host(host); > > err = mmc_add_card(host->card); > - if (err) > + if (err) { > + pr_debug("%s: %s: mmc_add_card() fail!\n", > + mmc_hostname(host), __func__); > goto remove_card; > + } > > mmc_claim_host(host); > + > + if (host->ops->uhs2_post_attach_sd) > + host->ops->uhs2_post_attach_sd(host); > + > return 0; > > remove_card: > - mmc_remove_card(host->card); > - host->card = NULL; > + sd_uhs2_remove(host); > mmc_claim_host(host); > - mmc_detach_bus(host); > + > err: > + mmc_detach_bus(host); > sd_uhs2_power_off(host); > + if (host->flags & MMC_UHS2_INITIALIZED) > + host->flags &= ~MMC_UHS2_INITIALIZED; > + host->flags &= ~MMC_UHS2_SUPPORT; > return err; > } > > +/** > + * mmc_attach_sd_uhs2 - select UHS2 interface > + * @host: MMC host > + * > + * Try to select UHS2 interface and initialize the bus for a given > + * frequency, @freq. > + * > + * Return: 0 on success, non-zero error on failure > + */ > int mmc_attach_sd_uhs2(struct mmc_host *host) > { > int i, err = 0; > @@ -273,8 +1081,12 @@ int mmc_attach_sd_uhs2(struct mmc_host *host) > if (!(host->caps2 & MMC_CAP2_SD_UHS2)) > return -EOPNOTSUPP; > > - /* Turn off the legacy SD interface before trying with UHS-II. */ > - mmc_power_off(host); > + host->flags |= MMC_UHS2_SUPPORT; > + > + if (!(host->caps2 & MMC_CAP2_NO_SDIO)) > + pr_info("mmc_card_sd_uhs2: sdio\n"); > + if (!(host->caps2 & MMC_CAP2_NO_SD)) > + pr_info("mmc_card_sd_uhs2: sd\n"); > > /* > * Start UHS-II initialization at 52MHz and possibly make a retry at > @@ -282,11 +1094,17 @@ int mmc_attach_sd_uhs2(struct mmc_host *host) > * validates ios->clock, to set a rate within the correct range. > */ > for (i = 0; i < ARRAY_SIZE(sd_uhs2_freqs); i++) { > - host->f_init = sd_uhs2_freqs[i]; > - err = sd_uhs2_attach(host); > - if (!err) > - break; > - } > + host->f_init = sd_uhs2_freqs[i]; > + pr_debug("%s: %s: trying to init card at %u Hz\n", > + mmc_hostname(host), __func__, host->f_init); > > - return err; > + err = sd_uhs2_attach(host); > + if (!err) > + break; > + else > + pr_debug("%s: %s: init card at %u Hz failed\n", > + mmc_hostname(host), __func__, > + host->f_init); > + } > + > + return err; > } > -- > 2.32.0 >
