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130206a615
In SD spec v6.x the SD function extension registers for performance enhancements were introduced. As a part of this an optional internal cache on the SD card, can be used to improve performance. The let the SD card use the cache, the host needs to enable it and manage flushing of the cache, so let's add support for this. Note that for an SD card supporting the cache it's mandatory for it, to also support the poweroff notification feature. According to the SD spec, if the cache has been enabled and a poweroff notification is sent to the card, that implicitly also means that the card should flush its internal cache. Therefore, dealing with cache flushing for REQ_OP_FLUSH block requests is sufficient. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Avri Altman <avri.altman@wdc.com> Link: https://lore.kernel.org/r/20210511101359.83521-1-ulf.hansson@linaro.org
61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* linux/drivers/mmc/core/mmc_ops.h
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*
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* Copyright 2006-2007 Pierre Ossman
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*/
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#ifndef _MMC_MMC_OPS_H
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#define _MMC_MMC_OPS_H
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#include <linux/types.h>
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enum mmc_busy_cmd {
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MMC_BUSY_CMD6,
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MMC_BUSY_ERASE,
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MMC_BUSY_HPI,
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MMC_BUSY_EXTR_SINGLE,
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};
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struct mmc_host;
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struct mmc_card;
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struct mmc_command;
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int mmc_select_card(struct mmc_card *card);
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int mmc_deselect_cards(struct mmc_host *host);
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int mmc_set_dsr(struct mmc_host *host);
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int mmc_go_idle(struct mmc_host *host);
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int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
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int mmc_set_relative_addr(struct mmc_card *card);
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int mmc_send_adtc_data(struct mmc_card *card, struct mmc_host *host, u32 opcode,
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u32 args, void *buf, unsigned len);
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int mmc_send_csd(struct mmc_card *card, u32 *csd);
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int __mmc_send_status(struct mmc_card *card, u32 *status, unsigned int retries);
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int mmc_send_status(struct mmc_card *card, u32 *status);
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int mmc_send_cid(struct mmc_host *host, u32 *cid);
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int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
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int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
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int mmc_bus_test(struct mmc_card *card, u8 bus_width);
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int mmc_can_ext_csd(struct mmc_card *card);
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int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd);
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int mmc_switch_status(struct mmc_card *card, bool crc_err_fatal);
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bool mmc_prepare_busy_cmd(struct mmc_host *host, struct mmc_command *cmd,
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unsigned int timeout_ms);
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int __mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms,
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int (*busy_cb)(void *cb_data, bool *busy),
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void *cb_data);
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int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms,
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bool retry_crc_err, enum mmc_busy_cmd busy_cmd);
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int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
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unsigned int timeout_ms, unsigned char timing,
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bool send_status, bool retry_crc_err, unsigned int retries);
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int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
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unsigned int timeout_ms);
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void mmc_run_bkops(struct mmc_card *card);
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int mmc_cmdq_enable(struct mmc_card *card);
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int mmc_cmdq_disable(struct mmc_card *card);
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int mmc_sanitize(struct mmc_card *card, unsigned int timeout_ms);
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#endif
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