1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  linux/drivers/mmc/core/sd_ops.h
5  *  Copyright 2006-2007 Pierre Ossman
13 #include <linux/mmc/host.h>
14 #include <linux/mmc/card.h>
15 #include <linux/mmc/mmc.h>
16 #include <linux/mmc/sd.h>
36 int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)  in mmc_app_cmd()  argument
41 	if (WARN_ON(card && card->host != host))  in mmc_app_cmd()
42 		return -EINVAL;  in mmc_app_cmd()
46 	if (card) {  in mmc_app_cmd()
47 		cmd.arg = card->rca << 16;  in mmc_app_cmd()
58 	/* Check that card supported application commands */  in mmc_app_cmd()
60 		return -EOPNOTSUPP;  in mmc_app_cmd()
66 static int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,  in mmc_wait_for_app_cmd()  argument
70 	int i, err = -EIO;  in mmc_wait_for_app_cmd()
77 		err = mmc_app_cmd(host, card);  in mmc_wait_for_app_cmd()
81 				if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)  in mmc_wait_for_app_cmd()
89 		memset(cmd->resp, 0, sizeof(cmd->resp));  in mmc_wait_for_app_cmd()
90 		cmd->retries = 0;  in mmc_wait_for_app_cmd()
93 		cmd->data = NULL;  in mmc_wait_for_app_cmd()
97 		err = cmd->error;  in mmc_wait_for_app_cmd()
98 		if (!cmd->error)  in mmc_wait_for_app_cmd()
103 			if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)  in mmc_wait_for_app_cmd()
111 int mmc_app_set_bus_width(struct mmc_card *card, int width)  in mmc_app_set_bus_width()  argument
126 		return -EINVAL;  in mmc_app_set_bus_width()
129 	return mmc_wait_for_app_cmd(card->host, card, &cmd);  in mmc_app_set_bus_width()
135 	struct mmc_host *host = data->host;  in sd_app_op_cond_cb()
136 	struct mmc_command *cmd = data->cmd;  in sd_app_op_cond_cb()
137 	u32 ocr = data->ocr;  in sd_app_op_cond_cb()
152 		if (!(cmd->resp[0] & R1_SPI_IDLE))  in sd_app_op_cond_cb()
154 	} else if (cmd->resp[0] & MMC_CARD_BUSY) {  in sd_app_op_cond_cb()
218 		return -EIO;  in __mmc_send_if_cond()
237 	if (host->caps2 & MMC_CAP2_SD_EXP) {  in mmc_send_if_cond_pcie()
238 		/* Probe card for SD express support via PCIe. */  in mmc_send_if_cond_pcie()
240 		if (host->caps2 & MMC_CAP2_SD_EXP_1_2V)  in mmc_send_if_cond_pcie()
249 	/* Continue with the SD express init, if the card supports it. */  in mmc_send_if_cond_pcie()
253 			host->ios.timing = MMC_TIMING_SD_EXP_1_2V;  in mmc_send_if_cond_pcie()
255 			host->ios.timing = MMC_TIMING_SD_EXP;  in mmc_send_if_cond_pcie()
261 		return host->ops->init_sd_express(host, &host->ios);  in mmc_send_if_cond_pcie()
285 int mmc_app_send_scr(struct mmc_card *card)  in mmc_app_send_scr()  argument
294 	/* NOTE: caller guarantees scr is heap-allocated */  in mmc_app_send_scr()
296 	err = mmc_app_cmd(card->host, card);  in mmc_app_send_scr()
301 	 * routine normally provide temporary on-stack buffers ...  in mmc_app_send_scr()
303 	scr = kmalloc(sizeof(card->raw_scr), GFP_KERNEL);  in mmc_app_send_scr()
305 		return -ENOMEM;  in mmc_app_send_scr()
322 	mmc_set_data_timeout(&data, card);  in mmc_app_send_scr()
324 	mmc_wait_for_req(card->host, &mrq);  in mmc_app_send_scr()
326 	card->raw_scr[0] = be32_to_cpu(scr[0]);  in mmc_app_send_scr()
327 	card->raw_scr[1] = be32_to_cpu(scr[1]);  in mmc_app_send_scr()
339 int mmc_sd_switch(struct mmc_card *card, bool mode, int group,  in mmc_sd_switch()  argument
344 	/* NOTE: caller guarantees resp is heap-allocated */  in mmc_sd_switch()
351 	return mmc_send_adtc_data(card, card->host, SD_SWITCH, cmd_args, resp,  in mmc_sd_switch()
356 int mmc_app_sd_status(struct mmc_card *card, void *ssr)  in mmc_app_sd_status()  argument
364 	/* NOTE: caller guarantees ssr is heap-allocated */  in mmc_app_sd_status()
366 	err = mmc_app_cmd(card->host, card);  in mmc_app_sd_status()
385 	mmc_set_data_timeout(&data, card);  in mmc_app_sd_status()
387 	mmc_wait_for_req(card->host, &mrq);  in mmc_app_sd_status()