X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fmmc%2Fdw_mmc.c;h=3fffa7116647618a1fa3c60b45bb11728941c95c;hb=3d19b84c9028471c002c4e026c8ceb0ba7e4b4de;hp=19d9b0b899c83dd2470a9d03b10000e16149bc1e;hpb=a891601ce51edbafa1a2750c96a618e4fcbca1c2;p=karo-tx-uboot.git diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 19d9b0b899..3fffa71166 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -6,6 +6,7 @@ * SPDX-License-Identifier: GPL-2.0+ */ +#include #include #include #include @@ -41,11 +42,13 @@ static void dwmci_set_idma_desc(struct dwmci_idmac *idmac, } static void dwmci_prepare_data(struct dwmci_host *host, - struct mmc_data *data, struct dwmci_idmac *cur_idmac) + struct mmc_data *data, + struct dwmci_idmac *cur_idmac, + void *bounce_buffer) { unsigned long ctrl; unsigned int i = 0, flags, cnt, blk_cnt; - ulong data_start, data_end, start_addr; + ulong data_start, data_end; blk_cnt = data->blocks; @@ -55,11 +58,6 @@ static void dwmci_prepare_data(struct dwmci_host *host, data_start = (ulong)cur_idmac; dwmci_writel(host, DWMCI_DBADDR, (unsigned int)cur_idmac); - if (data->flags == MMC_DATA_READ) - start_addr = (unsigned int)data->dest; - else - start_addr = (unsigned int)data->src; - do { flags = DWMCI_IDMAC_OWN | DWMCI_IDMAC_CH ; flags |= (i == 0) ? DWMCI_IDMAC_FS : 0; @@ -70,7 +68,7 @@ static void dwmci_prepare_data(struct dwmci_host *host, cnt = data->blocksize * 8; dwmci_set_idma_desc(cur_idmac, flags, cnt, - start_addr + (i * PAGE_SIZE)); + (u32)bounce_buffer + (i * PAGE_SIZE)); if (blk_cnt <= 8) break; @@ -109,7 +107,7 @@ static int dwmci_set_transfer_mode(struct dwmci_host *host, static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { - struct dwmci_host *host = (struct dwmci_host *)mmc->priv; + struct dwmci_host *host = mmc->priv; ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac, data ? DIV_ROUND_UP(data->blocks, 8) : 0); int flags = 0, i; @@ -117,18 +115,30 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, u32 retry = 10000; u32 mask, ctrl; ulong start = get_timer(0); + struct bounce_buffer bbstate; while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) { if (get_timer(start) > timeout) { - printf("Timeout on data busy\n"); + printf("%s: Timeout on data busy\n", __func__); return TIMEOUT; } } dwmci_writel(host, DWMCI_RINTSTS, DWMCI_INTMSK_ALL); - if (data) - dwmci_prepare_data(host, data, cur_idmac); + if (data) { + if (data->flags == MMC_DATA_READ) { + bounce_buffer_start(&bbstate, (void*)data->dest, + data->blocksize * + data->blocks, GEN_BB_WRITE); + } else { + bounce_buffer_start(&bbstate, (void*)data->src, + data->blocksize * + data->blocks, GEN_BB_READ); + } + dwmci_prepare_data(host, data, cur_idmac, + bbstate.bounce_buffer); + } dwmci_writel(host, DWMCI_CMDARG, cmd->cmdarg); @@ -167,14 +177,24 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, } } - if (i == retry) + if (i == retry) { + printf("%s: Timeout.\n", __func__); return TIMEOUT; + } if (mask & DWMCI_INTMSK_RTO) { - debug("Response Timeout..\n"); + /* + * Timeout here is not necessarily fatal. (e)MMC cards + * will splat here when they receive CMD55 as they do + * not support this command and that is exactly the way + * to tell them apart from SD cards. Thus, this output + * below shall be debug(). eMMC cards also do not favor + * CMD8, please keep that in mind. + */ + debug("%s: Response Timeout.\n", __func__); return TIMEOUT; } else if (mask & DWMCI_INTMSK_RE) { - debug("Response Error..\n"); + printf("%s: Response Error.\n", __func__); return -1; } @@ -194,7 +214,8 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, do { mask = dwmci_readl(host, DWMCI_RINTSTS); if (mask & (DWMCI_DATA_ERR | DWMCI_DATA_TOUT)) { - debug("DATA ERROR!\n"); + printf("%s: DATA ERROR!\n", __func__); + bounce_buffer_stop(&bbstate); return -1; } } while (!(mask & DWMCI_INTMSK_DTO)); @@ -204,6 +225,8 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, ctrl = dwmci_readl(host, DWMCI_CTRL); ctrl &= ~(DWMCI_DMA_EN); dwmci_writel(host, DWMCI_CTRL, ctrl); + + bounce_buffer_stop(&bbstate); } udelay(100); @@ -220,20 +243,23 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq) if ((freq == host->clock) || (freq == 0)) return 0; /* - * If host->get_mmc_clk didn't define, + * If host->get_mmc_clk isn't defined, * then assume that host->bus_hz is source clock value. - * host->bus_hz should be set from user. + * host->bus_hz should be set by user. */ if (host->get_mmc_clk) - sclk = host->get_mmc_clk(host->dev_index); + sclk = host->get_mmc_clk(host); else if (host->bus_hz) sclk = host->bus_hz; else { - printf("Didn't get source clock value..\n"); + printf("%s: Didn't get source clock value.\n", __func__); return -EINVAL; } - div = DIV_ROUND_UP(sclk, 2 * freq); + if (sclk == freq) + div = 0; /* bypass mode */ + else + div = DIV_ROUND_UP(sclk, 2 * freq); dwmci_writel(host, DWMCI_CLKENA, 0); dwmci_writel(host, DWMCI_CLKSRC, 0); @@ -245,7 +271,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq) do { status = dwmci_readl(host, DWMCI_CMD); if (timeout-- < 0) { - printf("TIMEOUT error!!\n"); + printf("%s: Timeout!\n", __func__); return -ETIMEDOUT; } } while (status & DWMCI_CMD_START); @@ -260,7 +286,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq) do { status = dwmci_readl(host, DWMCI_CMD); if (timeout-- < 0) { - printf("TIMEOUT error!!\n"); + printf("%s: Timeout!\n", __func__); return -ETIMEDOUT; } } while (status & DWMCI_CMD_START); @@ -273,9 +299,9 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq) static void dwmci_set_ios(struct mmc *mmc) { struct dwmci_host *host = (struct dwmci_host *)mmc->priv; - u32 ctype; + u32 ctype, regs; - debug("Buswidth = %d, clock: %d\n",mmc->bus_width, mmc->clock); + debug("Buswidth = %d, clock: %d\n", mmc->bus_width, mmc->clock); dwmci_setup_bus(host, mmc->clock); switch (mmc->bus_width) { @@ -292,13 +318,21 @@ static void dwmci_set_ios(struct mmc *mmc) dwmci_writel(host, DWMCI_CTYPE, ctype); + regs = dwmci_readl(host, DWMCI_UHS_REG); + if (mmc->ddr_mode) + regs |= DWMCI_DDR_MODE; + else + regs &= ~DWMCI_DDR_MODE; + + dwmci_writel(host, DWMCI_UHS_REG, regs); + if (host->clksel) host->clksel(host); } static int dwmci_init(struct mmc *mmc) { - struct dwmci_host *host = (struct dwmci_host *)mmc->priv; + struct dwmci_host *host = mmc->priv; if (host->board_init) host->board_init(host); @@ -306,12 +340,12 @@ static int dwmci_init(struct mmc *mmc) dwmci_writel(host, DWMCI_PWREN, 1); if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) { - debug("%s[%d] Fail-reset!!\n",__func__,__LINE__); + printf("%s[%d] Fail-reset!!\n", __func__, __LINE__); return -1; } /* Enumerate at 400KHz */ - dwmci_setup_bus(host, mmc->f_min); + dwmci_setup_bus(host, mmc->cfg->f_min); dwmci_writel(host, DWMCI_RINTSTS, 0xFFFFFFFF); dwmci_writel(host, DWMCI_INTMASK, 0); @@ -331,41 +365,37 @@ static int dwmci_init(struct mmc *mmc) return 0; } +static const struct mmc_ops dwmci_ops = { + .send_cmd = dwmci_send_cmd, + .set_ios = dwmci_set_ios, + .init = dwmci_init, +}; + int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk) { - struct mmc *mmc; - int err = 0; - - mmc = malloc(sizeof(struct mmc)); - if (!mmc) { - printf("mmc malloc fail!\n"); - return -1; - } - - mmc->priv = host; - host->mmc = mmc; - - sprintf(mmc->name, "%s", host->name); - mmc->send_cmd = dwmci_send_cmd; - mmc->set_ios = dwmci_set_ios; - mmc->init = dwmci_init; - mmc->f_min = min_clk; - mmc->f_max = max_clk; + host->cfg.name = host->name; + host->cfg.ops = &dwmci_ops; + host->cfg.f_min = min_clk; + host->cfg.f_max = max_clk; - mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; + host->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; - mmc->host_caps = host->caps; + host->cfg.host_caps = host->caps; if (host->buswidth == 8) { - mmc->host_caps |= MMC_MODE_8BIT; - mmc->host_caps &= ~MMC_MODE_4BIT; + host->cfg.host_caps |= MMC_MODE_8BIT; + host->cfg.host_caps &= ~MMC_MODE_4BIT; } else { - mmc->host_caps |= MMC_MODE_4BIT; - mmc->host_caps &= ~MMC_MODE_8BIT; + host->cfg.host_caps |= MMC_MODE_4BIT; + host->cfg.host_caps &= ~MMC_MODE_8BIT; } - mmc->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_HC; + host->cfg.host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz; - err = mmc_register(mmc); + host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; - return err; + host->mmc = mmc_create(&host->cfg, host); + if (host->mmc == NULL) + return -1; + + return 0; }