6f296421f8
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Message-id: 20180215220540.6556-12-f4bug@amsat.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
179 lines
6.3 KiB
C
179 lines
6.3 KiB
C
/*
|
|
* SD Memory Card emulation. Mostly correct for MMC too.
|
|
*
|
|
* Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef HW_SD_H
|
|
#define HW_SD_H
|
|
|
|
#include "hw/qdev.h"
|
|
|
|
#define OUT_OF_RANGE (1 << 31)
|
|
#define ADDRESS_ERROR (1 << 30)
|
|
#define BLOCK_LEN_ERROR (1 << 29)
|
|
#define ERASE_SEQ_ERROR (1 << 28)
|
|
#define ERASE_PARAM (1 << 27)
|
|
#define WP_VIOLATION (1 << 26)
|
|
#define CARD_IS_LOCKED (1 << 25)
|
|
#define LOCK_UNLOCK_FAILED (1 << 24)
|
|
#define COM_CRC_ERROR (1 << 23)
|
|
#define ILLEGAL_COMMAND (1 << 22)
|
|
#define CARD_ECC_FAILED (1 << 21)
|
|
#define CC_ERROR (1 << 20)
|
|
#define SD_ERROR (1 << 19)
|
|
#define CID_CSD_OVERWRITE (1 << 16)
|
|
#define WP_ERASE_SKIP (1 << 15)
|
|
#define CARD_ECC_DISABLED (1 << 14)
|
|
#define ERASE_RESET (1 << 13)
|
|
#define CURRENT_STATE (7 << 9)
|
|
#define READY_FOR_DATA (1 << 8)
|
|
#define APP_CMD (1 << 5)
|
|
#define AKE_SEQ_ERROR (1 << 3)
|
|
|
|
typedef enum {
|
|
SD_VOLTAGE_0_4V = 400, /* currently not supported */
|
|
SD_VOLTAGE_1_8V = 1800,
|
|
SD_VOLTAGE_3_0V = 3000,
|
|
SD_VOLTAGE_3_3V = 3300,
|
|
} sd_voltage_mv_t;
|
|
|
|
typedef enum {
|
|
UHS_NOT_SUPPORTED = 0,
|
|
UHS_I = 1,
|
|
UHS_II = 2, /* currently not supported */
|
|
UHS_III = 3, /* currently not supported */
|
|
} sd_uhs_mode_t;
|
|
|
|
typedef enum {
|
|
sd_none = -1,
|
|
sd_bc = 0, /* broadcast -- no response */
|
|
sd_bcr, /* broadcast with response */
|
|
sd_ac, /* addressed -- no data transfer */
|
|
sd_adtc, /* addressed with data transfer */
|
|
} sd_cmd_type_t;
|
|
|
|
typedef struct {
|
|
uint8_t cmd;
|
|
uint32_t arg;
|
|
uint8_t crc;
|
|
} SDRequest;
|
|
|
|
typedef struct SDState SDState;
|
|
typedef struct SDBus SDBus;
|
|
|
|
#define TYPE_SD_CARD "sd-card"
|
|
#define SD_CARD(obj) OBJECT_CHECK(SDState, (obj), TYPE_SD_CARD)
|
|
#define SD_CARD_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(SDCardClass, (klass), TYPE_SD_CARD)
|
|
#define SD_CARD_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(SDCardClass, (obj), TYPE_SD_CARD)
|
|
|
|
typedef struct {
|
|
/*< private >*/
|
|
DeviceClass parent_class;
|
|
/*< public >*/
|
|
|
|
int (*do_command)(SDState *sd, SDRequest *req, uint8_t *response);
|
|
void (*write_data)(SDState *sd, uint8_t value);
|
|
uint8_t (*read_data)(SDState *sd);
|
|
bool (*data_ready)(SDState *sd);
|
|
void (*set_voltage)(SDState *sd, uint16_t millivolts);
|
|
uint8_t (*get_dat_lines)(SDState *sd);
|
|
bool (*get_cmd_line)(SDState *sd);
|
|
void (*enable)(SDState *sd, bool enable);
|
|
bool (*get_inserted)(SDState *sd);
|
|
bool (*get_readonly)(SDState *sd);
|
|
} SDCardClass;
|
|
|
|
#define TYPE_SD_BUS "sd-bus"
|
|
#define SD_BUS(obj) OBJECT_CHECK(SDBus, (obj), TYPE_SD_BUS)
|
|
#define SD_BUS_CLASS(klass) OBJECT_CLASS_CHECK(SDBusClass, (klass), TYPE_SD_BUS)
|
|
#define SD_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(SDBusClass, (obj), TYPE_SD_BUS)
|
|
|
|
struct SDBus {
|
|
BusState qbus;
|
|
};
|
|
|
|
typedef struct {
|
|
/*< private >*/
|
|
BusClass parent_class;
|
|
/*< public >*/
|
|
|
|
/* These methods are called by the SD device to notify the controller
|
|
* when the card insertion or readonly status changes
|
|
*/
|
|
void (*set_inserted)(DeviceState *dev, bool inserted);
|
|
void (*set_readonly)(DeviceState *dev, bool readonly);
|
|
} SDBusClass;
|
|
|
|
/* Legacy functions to be used only by non-qdevified callers */
|
|
SDState *sd_init(BlockBackend *bs, bool is_spi);
|
|
int sd_do_command(SDState *sd, SDRequest *req,
|
|
uint8_t *response);
|
|
void sd_write_data(SDState *sd, uint8_t value);
|
|
uint8_t sd_read_data(SDState *sd);
|
|
void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert);
|
|
bool sd_data_ready(SDState *sd);
|
|
/* sd_enable should not be used -- it is only used on the nseries boards,
|
|
* where it is part of a broken implementation of the MMC card slot switch
|
|
* (there should be two card slots which are multiplexed to a single MMC
|
|
* controller, but instead we model it with one card and controller and
|
|
* disable the card when the second slot is selected, so it looks like the
|
|
* second slot is always empty).
|
|
*/
|
|
void sd_enable(SDState *sd, bool enable);
|
|
|
|
/* Functions to be used by qdevified callers (working via
|
|
* an SDBus rather than directly with SDState)
|
|
*/
|
|
void sdbus_set_voltage(SDBus *sdbus, uint16_t millivolts);
|
|
uint8_t sdbus_get_dat_lines(SDBus *sdbus);
|
|
bool sdbus_get_cmd_line(SDBus *sdbus);
|
|
int sdbus_do_command(SDBus *sd, SDRequest *req, uint8_t *response);
|
|
void sdbus_write_data(SDBus *sd, uint8_t value);
|
|
uint8_t sdbus_read_data(SDBus *sd);
|
|
bool sdbus_data_ready(SDBus *sd);
|
|
bool sdbus_get_inserted(SDBus *sd);
|
|
bool sdbus_get_readonly(SDBus *sd);
|
|
/**
|
|
* sdbus_reparent_card: Reparent an SD card from one controller to another
|
|
* @from: controller bus to remove card from
|
|
* @to: controller bus to move card to
|
|
*
|
|
* Reparent an SD card, effectively unplugging it from one controller
|
|
* and inserting it into another. This is useful for SoCs like the
|
|
* bcm2835 which have two SD controllers and connect a single SD card
|
|
* to them, selected by the guest reprogramming GPIO line routing.
|
|
*/
|
|
void sdbus_reparent_card(SDBus *from, SDBus *to);
|
|
|
|
/* Functions to be used by SD devices to report back to qdevified controllers */
|
|
void sdbus_set_inserted(SDBus *sd, bool inserted);
|
|
void sdbus_set_readonly(SDBus *sd, bool inserted);
|
|
|
|
#endif /* HW_SD_H */
|