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()
132  * The presence of the DSR register can be determined from the CSD register,
141 	cmd.arg = (host->dsr << 16) | 0xffff;  in mmc_set_dsr()
153 	 * Non-SPI hosts need to prevent chipselect going active during  in mmc_go_idle()
158 	 * rules that must accommodate non-MMC slaves which this layer  in mmc_go_idle()
179 	host->use_spi_crc = 0;  in mmc_go_idle()
187 	struct mmc_host *host = data->host;  in __mmc_send_op_cond_cb()
188 	struct mmc_command *cmd = data->cmd;  in __mmc_send_op_cond_cb()
189 	u32 ocr = data->ocr;  in __mmc_send_op_cond_cb()
197 		if (!(cmd->resp[0] & R1_SPI_IDLE)) {  in __mmc_send_op_cond_cb()
202 		if (cmd->resp[0] & MMC_CARD_BUSY) {  in __mmc_send_op_cond_cb()
218 		cmd->arg = cmd->resp[0] | BIT(30);  in __mmc_send_op_cond_cb()
254 	cmd.arg = card->rca << 16;  in mmc_set_relative_addr()
257 	return mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);  in mmc_set_relative_addr()
280  * NOTE: void *buf, caller for the buf is required to use DMA-capable
281  * buffer or on-stack buffer (with some overhead in callee).
339 		return -ENOMEM;  in mmc_spi_send_cxd()
355 	if (mmc_host_is_spi(card->host))  in mmc_send_csd()
356 		return mmc_spi_send_cxd(card->host, csd, MMC_SEND_CSD);  in mmc_send_csd()
358 	return mmc_send_cxd_native(card->host, card->rca << 16,	csd,  in mmc_send_csd()
376 		return -EINVAL;  in mmc_get_ext_csd()
379 		return -EOPNOTSUPP;  in mmc_get_ext_csd()
387 		return -ENOMEM;  in mmc_get_ext_csd()
389 	err = mmc_send_adtc_data(card, card->host, MMC_SEND_EXT_CSD, 0, ext_csd,  in mmc_get_ext_csd()
426 		host->use_spi_crc = use_crc;  in mmc_spi_set_crc()
434 			return -EBADMSG;  in mmc_switch_status_error()
440 			return -EBADMSG;  in mmc_switch_status_error()
445 /* Caller must hold re-tuning */
452 	if (!crc_err_fatal && err == -EILSEQ)  in mmc_switch_status()
457 	return mmc_switch_status_error(card->host, status);  in mmc_switch_status()
463 	struct mmc_host *host = data->card->host;  in mmc_busy_cb()
467 	if (data->busy_cmd != MMC_BUSY_IO && host->ops->card_busy) {  in mmc_busy_cb()
468 		*busy = host->ops->card_busy(host);  in mmc_busy_cb()
472 	err = mmc_send_status(data->card, &status);  in mmc_busy_cb()
473 	if (data->retry_crc_err && err == -EILSEQ) {  in mmc_busy_cb()
480 	switch (data->busy_cmd) {  in mmc_busy_cb()
485 		err = R1_STATUS(status) ? -EIO : 0;  in mmc_busy_cb()
492 		err = -EINVAL;  in mmc_busy_cb()
529 			return -ETIMEDOUT;  in __mmc_poll_for_busy()
547 	struct mmc_host *host = card->host;  in mmc_poll_for_busy()
568 	if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout &&  in mmc_prepare_busy_cmd()
569 	    (timeout_ms > host->max_busy_timeout)) {  in mmc_prepare_busy_cmd()
570 		cmd->flags = MMC_CMD_AC | MMC_RSP_SPI_R1 | MMC_RSP_R1;  in mmc_prepare_busy_cmd()
574 	cmd->flags = MMC_CMD_AC | MMC_RSP_SPI_R1B | MMC_RSP_R1B;  in mmc_prepare_busy_cmd()
575 	cmd->busy_timeout = timeout_ms;  in mmc_prepare_busy_cmd()
581  *	__mmc_switch - modify EXT_CSD register
599 	struct mmc_host *host = card->host;  in __mmc_switch()
603 	unsigned char old_timing = host->ios.timing;  in __mmc_switch()
608 		pr_warn("%s: unspecified timeout for CMD6 - use generic\n",  in __mmc_switch()
610 		timeout_ms = card->ext_csd.generic_cmd6_time;  in __mmc_switch()
625 	if (((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) ||  in __mmc_switch()
630 	 * If the host doesn't support HW polling via the ->card_busy() ops and  in __mmc_switch()
634 	if (!send_status && !host->ops->card_busy) {  in __mmc_switch()
674 	struct mmc_ios *ios = &host->ios;  in mmc_send_tuning()
679 	if (ios->bus_width == MMC_BUS_WIDTH_8) {  in mmc_send_tuning()
682 	} else if (ios->bus_width == MMC_BUS_WIDTH_4) {  in mmc_send_tuning()
686 		return -EINVAL;  in mmc_send_tuning()
690 		return -ENOMEM;  in mmc_send_tuning()
729 		err = -EIO;  in mmc_send_tuning()
753 	 * For drivers that override R1 to R1b, set an arbitrary timeout based  in mmc_send_abort_tuning()
777 	 * routine normally provide temporary on-stack buffers ...  in mmc_send_bus_test()
781 		return -ENOMEM;  in mmc_send_bus_test()
791 		return -EINVAL;  in mmc_send_bus_test()
825 				err = -EIO;  in mmc_send_bus_test()
850 		return -EINVAL;  in mmc_bus_test()
856 	mmc_send_bus_test(card, card->host, MMC_BUS_TEST_W, width);  in mmc_bus_test()
857 	return mmc_send_bus_test(card, card->host, MMC_BUS_TEST_R, width);  in mmc_bus_test()
862 	unsigned int busy_timeout_ms = card->ext_csd.out_of_int_time;  in mmc_send_hpi_cmd()
863 	struct mmc_host *host = card->host;  in mmc_send_hpi_cmd()
868 	cmd.opcode = card->ext_csd.hpi_cmd;  in mmc_send_hpi_cmd()
869 	cmd.arg = card->rca << 16 | 1;  in mmc_send_hpi_cmd()
884 	if (host->caps & MMC_CAP_WAIT_WHILE_BUSY && use_r1b_resp)  in mmc_send_hpi_cmd()
892  *	mmc_interrupt_hpi - Issue for High priority Interrupt
896  *	until out-of prg-state.
903 	if (!card->ext_csd.hpi_en) {  in mmc_interrupt_hpi()
904 		pr_info("%s: HPI enable bit unset\n", mmc_hostname(card->host));  in mmc_interrupt_hpi()
910 		pr_err("%s: Get card status fail\n", mmc_hostname(card->host));  in mmc_interrupt_hpi()
929 			mmc_hostname(card->host), R1_CURRENT_STATE(status));  in mmc_interrupt_hpi()
930 		err = -EINVAL;  in mmc_interrupt_hpi()
941 	return (card && card->csd.mmca_vsn > CSD_SPEC_VER_3);  in mmc_can_ext_csd()
953 	card->ext_csd.raw_bkops_status = ext_csd[EXT_CSD_BKOPS_STATUS];  in mmc_read_bkops_status()
954 	card->ext_csd.raw_exception_status = ext_csd[EXT_CSD_EXP_EVENTS_STATUS];  in mmc_read_bkops_status()
960  *	mmc_run_bkops - Run BKOPS for supported cards
970 	if (!card->ext_csd.man_bkops_en)  in mmc_run_bkops()
976 		       mmc_hostname(card->host), err);  in mmc_run_bkops()
980 	if (!card->ext_csd.raw_bkops_status ||  in mmc_run_bkops()
981 	    card->ext_csd.raw_bkops_status < EXT_CSD_BKOPS_LEVEL_2)  in mmc_run_bkops()
984 	mmc_retune_hold(card->host);  in mmc_run_bkops()
998 	if (err == -ETIMEDOUT && !mmc_interrupt_hpi(card))  in mmc_run_bkops()
999 		pr_warn("%s: BKOPS aborted\n", mmc_hostname(card->host));  in mmc_run_bkops()
1002 			mmc_hostname(card->host), err);  in mmc_run_bkops()
1004 	mmc_retune_release(card->host);  in mmc_run_bkops()
1013 	if (!card->ext_csd.cmdq_support)  in mmc_cmdq_switch()
1014 		return -EOPNOTSUPP;  in mmc_cmdq_switch()
1017 			 val, card->ext_csd.generic_cmd6_time);  in mmc_cmdq_switch()
1019 		card->ext_csd.cmdq_en = enable;  in mmc_cmdq_switch()
1038 	struct mmc_host *host = card->host;  in mmc_sanitize()
1043 		return -EOPNOTSUPP;  in mmc_sanitize()
1063 	if (err == -ETIMEDOUT && !mmc_interrupt_hpi(card))  in mmc_sanitize()