1 // SPDX-License-Identifier: GPL-2.0-or-later
5  *  Copyright 2006-2007 Pierre Ossman
75 	if (!mmc_host_is_spi(card->host))  in __mmc_send_status()
76 		cmd.arg = card->rca << 16;  in __mmc_send_status()
79 	err = mmc_wait_for_cmd(card->host, &cmd, retries);  in __mmc_send_status()
106 		cmd.arg = card->rca << 16;  in _mmc_select_card()
119 	return _mmc_select_card(card->host, card);  in mmc_select_card()
141 	cmd.arg = (host->dsr << 16) | 0xffff;  in mmc_set_dsr()
167 	 * Non-SPI hosts need to prevent chipselect going active during  in mmc_go_idle()
172 	 * rules that must accommodate non-MMC slaves which this layer  in mmc_go_idle()
187 	host->use_spi_crc = 0;  in mmc_go_idle()
195 	struct mmc_host *host = data->host;  in __mmc_send_op_cond_cb()
196 	struct mmc_command *cmd = data->cmd;  in __mmc_send_op_cond_cb()
197 	u32 ocr = data->ocr;  in __mmc_send_op_cond_cb()
205 		if (!(cmd->resp[0] & R1_SPI_IDLE)) {  in __mmc_send_op_cond_cb()
210 		if (cmd->resp[0] & MMC_CARD_BUSY) {  in __mmc_send_op_cond_cb()
226 		cmd->arg = cmd->resp[0] | BIT(30);  in __mmc_send_op_cond_cb()
262 	cmd.arg = card->rca << 16;  in mmc_set_relative_addr()
265 	return mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);  in mmc_set_relative_addr()
288  * NOTE: void *buf, caller for the buf is required to use DMA-capable
289  * buffer or on-stack buffer (with some overhead in callee).
347 		return -ENOMEM;  in mmc_spi_send_cxd()
363 	if (mmc_host_is_spi(card->host))  in mmc_send_csd()
364 		return mmc_spi_send_cxd(card->host, csd, MMC_SEND_CSD);  in mmc_send_csd()
366 	return mmc_send_cxd_native(card->host, card->rca << 16,	csd,  in mmc_send_csd()
384 		return -EINVAL;  in mmc_get_ext_csd()
387 		return -EOPNOTSUPP;  in mmc_get_ext_csd()
395 		return -ENOMEM;  in mmc_get_ext_csd()
397 	err = mmc_send_adtc_data(card, card->host, MMC_SEND_EXT_CSD, 0, ext_csd,  in mmc_get_ext_csd()
434 		host->use_spi_crc = use_crc;  in mmc_spi_set_crc()
442 			return -EBADMSG;  in mmc_switch_status_error()
448 			return -EBADMSG;  in mmc_switch_status_error()
453 /* Caller must hold re-tuning */
460 	if (!crc_err_fatal && err == -EILSEQ)  in mmc_switch_status()
465 	return mmc_switch_status_error(card->host, status);  in mmc_switch_status()
471 	struct mmc_host *host = data->card->host;  in mmc_busy_cb()
475 	if (data->busy_cmd != MMC_BUSY_IO && host->ops->card_busy) {  in mmc_busy_cb()
476 		*busy = host->ops->card_busy(host);  in mmc_busy_cb()
480 	err = mmc_send_status(data->card, &status);  in mmc_busy_cb()
481 	if (data->retry_crc_err && err == -EILSEQ) {  in mmc_busy_cb()
488 	switch (data->busy_cmd) {  in mmc_busy_cb()
493 		err = R1_STATUS(status) ? -EIO : 0;  in mmc_busy_cb()
500 		err = -EINVAL;  in mmc_busy_cb()
537 			return -ETIMEDOUT;  in __mmc_poll_for_busy()
555 	struct mmc_host *host = card->host;  in mmc_poll_for_busy()
576 	if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout &&  in mmc_prepare_busy_cmd()
577 	    (timeout_ms > host->max_busy_timeout)) {  in mmc_prepare_busy_cmd()
578 		cmd->flags = MMC_CMD_AC | MMC_RSP_SPI_R1 | MMC_RSP_R1;  in mmc_prepare_busy_cmd()
582 	cmd->flags = MMC_CMD_AC | MMC_RSP_SPI_R1B | MMC_RSP_R1B;  in mmc_prepare_busy_cmd()
583 	cmd->busy_timeout = timeout_ms;  in mmc_prepare_busy_cmd()
589  *	__mmc_switch - modify EXT_CSD register
607 	struct mmc_host *host = card->host;  in __mmc_switch()
611 	unsigned char old_timing = host->ios.timing;  in __mmc_switch()
616 		pr_warn("%s: unspecified timeout for CMD6 - use generic\n",  in __mmc_switch()
618 		timeout_ms = card->ext_csd.generic_cmd6_time;  in __mmc_switch()
633 	if (((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) ||  in __mmc_switch()
638 	 * If the host doesn't support HW polling via the ->card_busy() ops and  in __mmc_switch()
642 	if (!send_status && !host->ops->card_busy) {  in __mmc_switch()
682 	struct mmc_ios *ios = &host->ios;  in mmc_send_tuning()
687 	if (ios->bus_width == MMC_BUS_WIDTH_8) {  in mmc_send_tuning()
690 	} else if (ios->bus_width == MMC_BUS_WIDTH_4) {  in mmc_send_tuning()
694 		return -EINVAL;  in mmc_send_tuning()
698 		return -ENOMEM;  in mmc_send_tuning()
737 		err = -EIO;  in mmc_send_tuning()
785 	 * routine normally provide temporary on-stack buffers ...  in mmc_send_bus_test()
789 		return -ENOMEM;  in mmc_send_bus_test()
799 		return -EINVAL;  in mmc_send_bus_test()
833 				err = -EIO;  in mmc_send_bus_test()
858 		return -EINVAL;  in mmc_bus_test()
864 	mmc_send_bus_test(card, card->host, MMC_BUS_TEST_W, width);  in mmc_bus_test()
865 	return mmc_send_bus_test(card, card->host, MMC_BUS_TEST_R, width);  in mmc_bus_test()
870 	unsigned int busy_timeout_ms = card->ext_csd.out_of_int_time;  in mmc_send_hpi_cmd()
871 	struct mmc_host *host = card->host;  in mmc_send_hpi_cmd()
876 	cmd.opcode = card->ext_csd.hpi_cmd;  in mmc_send_hpi_cmd()
877 	cmd.arg = card->rca << 16 | 1;  in mmc_send_hpi_cmd()
892 	if (host->caps & MMC_CAP_WAIT_WHILE_BUSY && use_r1b_resp)  in mmc_send_hpi_cmd()
900  *	mmc_interrupt_hpi - Issue for High priority Interrupt
904  *	until out-of prg-state.
911 	if (!card->ext_csd.hpi_en) {  in mmc_interrupt_hpi()
912 		pr_info("%s: HPI enable bit unset\n", mmc_hostname(card->host));  in mmc_interrupt_hpi()
918 		pr_err("%s: Get card status fail\n", mmc_hostname(card->host));  in mmc_interrupt_hpi()
937 			mmc_hostname(card->host), R1_CURRENT_STATE(status));  in mmc_interrupt_hpi()
938 		err = -EINVAL;  in mmc_interrupt_hpi()
949 	return (card && card->csd.mmca_vsn > CSD_SPEC_VER_3);  in mmc_can_ext_csd()
961 	card->ext_csd.raw_bkops_status = ext_csd[EXT_CSD_BKOPS_STATUS];  in mmc_read_bkops_status()
962 	card->ext_csd.raw_exception_status = ext_csd[EXT_CSD_EXP_EVENTS_STATUS];  in mmc_read_bkops_status()
968  *	mmc_run_bkops - Run BKOPS for supported cards
972  *	enabled and in case it reports urgent BKOPS level.
978 	if (!card->ext_csd.man_bkops_en)  in mmc_run_bkops()
984 		       mmc_hostname(card->host), err);  in mmc_run_bkops()
988 	if (!card->ext_csd.raw_bkops_status ||  in mmc_run_bkops()
989 	    card->ext_csd.raw_bkops_status < EXT_CSD_BKOPS_LEVEL_2)  in mmc_run_bkops()
992 	mmc_retune_hold(card->host);  in mmc_run_bkops()
995 	 * For urgent BKOPS status, LEVEL_2 and higher, let's execute  in mmc_run_bkops()
997 	 * urgent levels by using an asynchronous background task, when idle.  in mmc_run_bkops()
1006 	if (err == -ETIMEDOUT && !mmc_interrupt_hpi(card))  in mmc_run_bkops()
1007 		pr_warn("%s: BKOPS aborted\n", mmc_hostname(card->host));  in mmc_run_bkops()
1010 			mmc_hostname(card->host), err);  in mmc_run_bkops()
1012 	mmc_retune_release(card->host);  in mmc_run_bkops()
1021 	if (!card->ext_csd.cmdq_support)  in mmc_cmdq_switch()
1022 		return -EOPNOTSUPP;  in mmc_cmdq_switch()
1025 			 val, card->ext_csd.generic_cmd6_time);  in mmc_cmdq_switch()
1027 		card->ext_csd.cmdq_en = enable;  in mmc_cmdq_switch()
1046 	struct mmc_host *host = card->host;  in mmc_sanitize()
1051 		return -EOPNOTSUPP;  in mmc_sanitize()
1071 	if (err == -ETIMEDOUT && !mmc_interrupt_hpi(card))  in mmc_sanitize()