drivers/mmc/dw_mmc.c

89 static int dwmci_wait_reset(struct dwmci_host *host, u32 value)  in dwmci_wait_reset()  argument
94 	dwmci_writel(host, DWMCI_CTRL, value);  in dwmci_wait_reset()
97 		ctrl = dwmci_readl(host, DWMCI_CTRL);  in dwmci_wait_reset()
115 static void dwmci_prepare_data(struct dwmci_host *host,  in dwmci_prepare_data()  argument
127 	dwmci_wait_reset(host, DWMCI_CTRL_FIFO_RESET);  in dwmci_prepare_data()
130 	dwmci_writel(host, DWMCI_DBADDR, (ulong)cur_idmac);  in dwmci_prepare_data()
154 	ctrl = dwmci_readl(host, DWMCI_CTRL);  in dwmci_prepare_data()
156 	dwmci_writel(host, DWMCI_CTRL, ctrl);  in dwmci_prepare_data()
158 	ctrl = dwmci_readl(host, DWMCI_BMOD);  in dwmci_prepare_data()
160 	dwmci_writel(host, DWMCI_BMOD, ctrl);  in dwmci_prepare_data()
162 	dwmci_writel(host, DWMCI_BLKSIZ, data->blocksize);  in dwmci_prepare_data()
163 	dwmci_writel(host, DWMCI_BYTCNT, data->blocksize * data->blocks);  in dwmci_prepare_data()
166 static unsigned int dwmci_get_drto(struct dwmci_host *host,  in dwmci_get_drto()  argument
172 	timeout /= host->mmc->bus_width;  in dwmci_get_drto()
174 	timeout /= (host->mmc->clock / 1000); /* counting in msec */  in dwmci_get_drto()
180 static unsigned int dwmci_get_cto(struct dwmci_host *host)  in dwmci_get_cto()  argument
186 	cto_clks = dwmci_readl(host, DWMCI_TMOUT) & 0xff;  in dwmci_get_cto()
187 	cto_div = (dwmci_readl(host, DWMCI_CLKDIV) & 0xff) * 2;  in dwmci_get_cto()
192 				  host->mmc->clock);  in dwmci_get_cto()
200 static int dwmci_data_transfer(struct dwmci_host *host, struct mmc_data *data)  in dwmci_data_transfer()  argument
207 	u32 fifo_depth = (((host->fifoth_val & RX_WMARK_MASK) >>  in dwmci_data_transfer()
213 	stride = host->stride_pio && size > 128;  in dwmci_data_transfer()
219 	timeout = dwmci_get_drto(host, size);  in dwmci_data_transfer()
221 	if ((dwmci_readl(host, DWMCI_CMD) & 0x1F) == MMC_SEND_TUNING_BLOCK_HS200)  in dwmci_data_transfer()
227 		mask = dwmci_readl(host, DWMCI_RINTSTS);  in dwmci_data_transfer()
236 			dwmci_wait_reset(host, DWMCI_RESET_ALL);  in dwmci_data_transfer()
237 			dwmci_writel(host, DWMCI_CMD, DWMCI_CMD_PRV_DAT_WAIT |  in dwmci_data_transfer()
241 				status = dwmci_readl(host, DWMCI_CMD);  in dwmci_data_transfer()
247 			if (!host->fifo_mode) {  in dwmci_data_transfer()
248 				ctrl = dwmci_readl(host, DWMCI_BMOD);  in dwmci_data_transfer()
250 				dwmci_writel(host, DWMCI_BMOD, ctrl);  in dwmci_data_transfer()
257 		if (host->fifo_mode && size) {  in dwmci_data_transfer()
262 					len = dwmci_readl(host, DWMCI_STATUS);  in dwmci_data_transfer()
269 							*buf++ = dwmci_readl(host, DWMCI_DATA);  in dwmci_data_transfer()
278 						dwmci_memcpy_fromio(buf, host->ioaddr + DWMCI_DATA);  in dwmci_data_transfer()
287 				dwmci_writel(host, DWMCI_RINTSTS,  in dwmci_data_transfer()
292 					len = dwmci_readl(host, DWMCI_STATUS);  in dwmci_data_transfer()
299 							dwmci_writel(host, DWMCI_DATA,  in dwmci_data_transfer()
308 						dwmci_memcpy_toio(buf, host->ioaddr + DWMCI_DATA);  in dwmci_data_transfer()
316 				dwmci_writel(host, DWMCI_RINTSTS,  in dwmci_data_transfer()
336 	dwmci_writel(host, DWMCI_RINTSTS, mask);  in dwmci_data_transfer()
341 static int dwmci_set_transfer_mode(struct dwmci_host *host,  in dwmci_set_transfer_mode()  argument
363 	struct dwmci_host *host = mmc->priv;  local
372 	while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) {
379 	dwmci_writel(host, DWMCI_RINTSTS, DWMCI_INTMSK_ALL);
382 		if (host->fifo_mode) {
383 			dwmci_writel(host, DWMCI_BLKSIZ, data->blocksize);
384 			dwmci_writel(host, DWMCI_BYTCNT,
386 			dwmci_wait_reset(host, DWMCI_CTRL_FIFO_RESET);
403 			dwmci_prepare_data(host, data, cur_idmac,
408 	dwmci_writel(host, DWMCI_CMDARG, cmd->cmdarg);
411 		flags = dwmci_set_transfer_mode(host, data);
436 	dwmci_writel(host, DWMCI_CMD, flags);
438 	timeout = dwmci_get_cto(host);
441 		mask = dwmci_readl(host, DWMCI_RINTSTS);
444 				dwmci_writel(host, DWMCI_RINTSTS, mask);
473 			cmd->response[0] = dwmci_readl(host, DWMCI_RESP3);
474 			cmd->response[1] = dwmci_readl(host, DWMCI_RESP2);
475 			cmd->response[2] = dwmci_readl(host, DWMCI_RESP1);
476 			cmd->response[3] = dwmci_readl(host, DWMCI_RESP0);
478 			cmd->response[0] = dwmci_readl(host, DWMCI_RESP0);
483 		ret = dwmci_data_transfer(host, data);
486 		if (!host->fifo_mode) {
487 			ctrl = dwmci_readl(host, DWMCI_CTRL);
489 			dwmci_writel(host, DWMCI_CTRL, ctrl);
508 	struct dwmci_host *host = mmc->priv;  local
528 	while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) {
535 	dwmci_writel(host, DWMCI_RINTSTS, DWMCI_INTMSK_ALL);
538 		if (host->fifo_mode) {
539 			dwmci_writel(host, DWMCI_BLKSIZ, data->blocksize);
540 			dwmci_writel(host, DWMCI_BYTCNT,
542 			dwmci_wait_reset(host, DWMCI_CTRL_FIFO_RESET);
553 			dwmci_prepare_data(host, data, cur_idmac,
558 	dwmci_writel(host, DWMCI_CMDARG, cmd->cmdarg);
561 		flags = dwmci_set_transfer_mode(host, data);
584 	dwmci_writel(host, DWMCI_CMD, flags);
586 	timeout = dwmci_get_cto(host);
589 		mask = dwmci_readl(host, DWMCI_RINTSTS);
592 				dwmci_writel(host, DWMCI_RINTSTS, mask);
620 			cmd->response[0] = dwmci_readl(host, DWMCI_RESP3);
621 			cmd->response[1] = dwmci_readl(host, DWMCI_RESP2);
622 			cmd->response[2] = dwmci_readl(host, DWMCI_RESP1);
623 			cmd->response[3] = dwmci_readl(host, DWMCI_RESP0);
625 			cmd->response[0] = dwmci_readl(host, DWMCI_RESP0);
633 static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)  argument
646 	if (host->get_mmc_clk)
647 		sclk = host->get_mmc_clk(host, freq);
648 	else if (host->bus_hz)
649 		sclk = host->bus_hz;
663 	dwmci_writel(host, DWMCI_CLKENA, 0);
664 	dwmci_writel(host, DWMCI_CLKSRC, 0);
666 	dwmci_writel(host, DWMCI_CLKDIV, div);
667 	dwmci_writel(host, DWMCI_CMD, DWMCI_CMD_PRV_DAT_WAIT |
671 		status = dwmci_readl(host, DWMCI_CMD);
678 	dwmci_writel(host, DWMCI_CLKENA, DWMCI_CLKEN_ENABLE |
681 	dwmci_writel(host, DWMCI_CMD, DWMCI_CMD_PRV_DAT_WAIT |
686 		status = dwmci_readl(host, DWMCI_CMD);
693 	host->clock = freq;
707 	struct dwmci_host *host = (struct dwmci_host *)mmc->priv;  local
713 	status = dwmci_readl(host, DWMCI_STATUS);
726 	struct dwmci_host *host = (struct dwmci_host *)mmc->priv;  local
728 	if (!host->execute_tuning)
731 	return host->execute_tuning(host, opcode);
742 	struct dwmci_host *host = (struct dwmci_host *)mmc->priv;  local
747 	dwmci_setup_bus(host, mmc->clock);
760 	dwmci_writel(host, DWMCI_CTYPE, ctype);
762 	regs = dwmci_readl(host, DWMCI_UHS_REG);
768 	dwmci_writel(host, DWMCI_UHS_REG, regs);
770 	if (host->clksel)
771 		host->clksel(host);
778 	struct dwmci_host *host = mmc->priv;  local
798 	if (host->board_init)
799 		host->board_init(host);
801 	if (host->dev_index == 0)
802 		dwmci_writel(host, DWMCI_PWREN, 1);
803 	else if (host->dev_index == 1)
804 		dwmci_writel(host, DWMCI_PWREN, CONFIG_MMC_DW_PWREN_VALUE);
806 		dwmci_writel(host, DWMCI_PWREN, 1);
808 	dwmci_writel(host, DWMCI_PWREN, 1);
811 	verid = dwmci_readl(host, DWMCI_VERID) & 0x0000ffff;
813 		dwmci_writel(host, DWMCI_CARDTHRCTL, DWMCI_CDTHRCTRL_CONFIG);
815 	if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
820 	use_dma = SDMMC_GET_TRANS_MODE(dwmci_readl(host, DWMCI_HCON));
822 		host->fifo_mode = 0;
824 		host->fifo_mode = 1;
828 	dwmci_setup_bus(host, mmc->cfg->f_min);
830 	dwmci_writel(host, DWMCI_RINTSTS, 0xFFFFFFFF);
831 	dwmci_writel(host, DWMCI_INTMASK, 0);
833 	dwmci_writel(host, DWMCI_TMOUT, 0xFFFFFFFF);
835 	dwmci_writel(host, DWMCI_IDINTEN, 0);
836 	dwmci_writel(host, DWMCI_BMOD, 1);
838 	if (!host->fifoth_val) {
841 		fifo_size = dwmci_readl(host, DWMCI_FIFOTH);
843 		host->fifoth_val = MSIZE(DWMCI_MSIZE) |
847 	dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
849 	dwmci_writel(host, DWMCI_CLKENA, 0);
850 	dwmci_writel(host, DWMCI_CLKSRC, 0);
859 	struct dwmci_host *host = mmc->priv;  local
874 	ret = (dwmci_readl(host, DWMCI_CDETECT) & (1 << 0)) == 0 ? 1 : 0;
909 void dwmci_setup_cfg(struct mmc_config *cfg, struct dwmci_host *host,  argument
912 	cfg->name = host->name;
921 	cfg->host_caps = host->caps;
923 	switch (host->buswidth) {
936 		printf("Unsupported bus width: %d\n", host->buswidth);
950 int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk)  argument
952 	dwmci_setup_cfg(&host->cfg, host, max_clk, min_clk);
954 	host->mmc = mmc_create(&host->cfg, host);
955 	if (host->mmc == NULL)