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>
22 int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)  in mmc_app_cmd()  argument
27 	if (WARN_ON(card && card->host != host))  in mmc_app_cmd()
28 		return -EINVAL;  in mmc_app_cmd()
32 	if (card) {  in mmc_app_cmd()
33 		cmd.arg = card->rca << 16;  in mmc_app_cmd()
44 	/* Check that card supported application commands */  in mmc_app_cmd()
46 		return -EOPNOTSUPP;  in mmc_app_cmd()
52 static int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,  in mmc_wait_for_app_cmd()  argument
56 	int i, err = -EIO;  in mmc_wait_for_app_cmd()
63 		err = mmc_app_cmd(host, card);  in mmc_wait_for_app_cmd()
67 				if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)  in mmc_wait_for_app_cmd()
75 		memset(cmd->resp, 0, sizeof(cmd->resp));  in mmc_wait_for_app_cmd()
76 		cmd->retries = 0;  in mmc_wait_for_app_cmd()
79 		cmd->data = NULL;  in mmc_wait_for_app_cmd()
83 		err = cmd->error;  in mmc_wait_for_app_cmd()
84 		if (!cmd->error)  in mmc_wait_for_app_cmd()
89 			if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)  in mmc_wait_for_app_cmd()
97 int mmc_app_set_bus_width(struct mmc_card *card, int width)  in mmc_app_set_bus_width()  argument
112 		return -EINVAL;  in mmc_app_set_bus_width()
115 	return mmc_wait_for_app_cmd(card->host, card, &cmd);  in mmc_app_set_bus_width()
130 	for (i = 100; i; i--) {  in mmc_send_app_op_cond()
148 		err = -ETIMEDOUT;  in mmc_send_app_op_cond()
154 		pr_err("%s: card never left busy state\n", mmc_hostname(host));  in mmc_send_app_op_cond()
189 		return -EIO;  in __mmc_send_if_cond()
208 	if (host->caps2 & MMC_CAP2_SD_EXP) {  in mmc_send_if_cond_pcie()
209 		/* Probe card for SD express support via PCIe. */  in mmc_send_if_cond_pcie()
211 		if (host->caps2 & MMC_CAP2_SD_EXP_1_2V)  in mmc_send_if_cond_pcie()
220 	/* Continue with the SD express init, if the card supports it. */  in mmc_send_if_cond_pcie()
224 			host->ios.timing = MMC_TIMING_SD_EXP_1_2V;  in mmc_send_if_cond_pcie()
226 			host->ios.timing = MMC_TIMING_SD_EXP;  in mmc_send_if_cond_pcie()
232 		return host->ops->init_sd_express(host, &host->ios);  in mmc_send_if_cond_pcie()
256 int mmc_app_send_scr(struct mmc_card *card)  in mmc_app_send_scr()  argument
265 	/* NOTE: caller guarantees scr is heap-allocated */  in mmc_app_send_scr()
267 	err = mmc_app_cmd(card->host, card);  in mmc_app_send_scr()
272 	 * routine normally provide temporary on-stack buffers ...  in mmc_app_send_scr()
274 	scr = kmalloc(sizeof(card->raw_scr), GFP_KERNEL);  in mmc_app_send_scr()
276 		return -ENOMEM;  in mmc_app_send_scr()
293 	mmc_set_data_timeout(&data, card);  in mmc_app_send_scr()
295 	mmc_wait_for_req(card->host, &mrq);  in mmc_app_send_scr()
297 	card->raw_scr[0] = be32_to_cpu(scr[0]);  in mmc_app_send_scr()
298 	card->raw_scr[1] = be32_to_cpu(scr[1]);  in mmc_app_send_scr()
310 int mmc_sd_switch(struct mmc_card *card, int mode, int group,  in mmc_sd_switch()  argument
315 	/* NOTE: caller guarantees resp is heap-allocated */  in mmc_sd_switch()
323 	return mmc_send_adtc_data(card, card->host, SD_SWITCH, cmd_args, resp,  in mmc_sd_switch()
328 int mmc_app_sd_status(struct mmc_card *card, void *ssr)  in mmc_app_sd_status()  argument
336 	/* NOTE: caller guarantees ssr is heap-allocated */  in mmc_app_sd_status()
338 	err = mmc_app_cmd(card->host, card);  in mmc_app_sd_status()
357 	mmc_set_data_timeout(&data, card);  in mmc_app_sd_status()
359 	mmc_wait_for_req(card->host, &mrq);  in mmc_app_sd_status()