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sdhci: implement CMD/DAT[] fields in the Present State register

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[based on a patch from Alistair Francis <alistair.francis@xilinx.com>
 from qemu/xilinx tag xilinx-v2015.2]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-Id: <20180208164818.7961-23-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2018-02-08 13:48:10 -03:00 • committed by Paolo Bonzini
parent 0034ebe6ee
commit da34692234
6 changed files with 62 additions and 0 deletions
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16
hw/sd/sd.c
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@ -126,8 +126,20 @@ struct SDState {
BlockBackend *blk;
bool enable;
uint8_t dat_lines;
bool cmd_line;
};
static uint8_t sd_get_dat_lines(SDState *sd)
{
return sd->enable ? sd->dat_lines : 0;
}
static bool sd_get_cmd_line(SDState *sd)
{
return sd->enable ? sd->cmd_line : false;
}
static void sd_set_voltage(SDState *sd, uint16_t millivolts)
{
switch (millivolts) {
@ -457,6 +469,8 @@ static void sd_reset(DeviceState *dev)
sd->blk_len = 0x200;
sd->pwd_len = 0;
sd->expecting_acmd = false;
sd->dat_lines = 0xf;
sd->cmd_line = true;
sd->multi_blk_cnt = 0;
}
@ -1939,6 +1953,8 @@ static void sd_class_init(ObjectClass *klass, void *data)
dc->bus_type = TYPE_SD_BUS;
sc->set_voltage = sd_set_voltage;
sc->get_dat_lines = sd_get_dat_lines;
sc->get_cmd_line = sd_get_cmd_line;
sc->do_command = sd_do_command;
sc->write_data = sd_write_data;
sc->read_data = sd_read_data;