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hw/sd: Introduce receive_ready() callback

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At present there is a data_ready() callback for the SD data read
path. Let's add a receive_ready() for the SD data write path.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210128063035.15674-5-bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Bin Meng 2021-01-28 14:30:30 +08:00 committed by Philippe Mathieu-Daudé
parent eedb7f249c
commit 995731d3f7
3 changed files with 21 additions and 0 deletions
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13
hw/sd/core.c
View File

@ -160,6 +160,19 @@ void sdbus_read_data(SDBus *sdbus, void *buf, size_t length)
}
}
bool sdbus_receive_ready(SDBus *sdbus)
{
SDState *card = get_card(sdbus);
if (card) {
SDCardClass *sc = SD_CARD_GET_CLASS(card);
return sc->receive_ready(card);
}
return false;
}
bool sdbus_data_ready(SDBus *sdbus)
{
SDState *card = get_card(sdbus);

6
hw/sd/sd.c
View File

@ -2037,6 +2037,11 @@ uint8_t sd_read_byte(SDState *sd)
return ret;
}
static bool sd_receive_ready(SDState *sd)
{
return sd->state == sd_receivingdata_state;
}
static bool sd_data_ready(SDState *sd)
{
return sd->state == sd_sendingdata_state;
@ -2147,6 +2152,7 @@ static void sd_class_init(ObjectClass *klass, void *data)
sc->do_command = sd_do_command;
sc->write_byte = sd_write_byte;
sc->read_byte = sd_read_byte;
sc->receive_ready = sd_receive_ready;
sc->data_ready = sd_data_ready;
sc->enable = sd_enable;
sc->get_inserted = sd_get_inserted;

2
include/hw/sd/sd.h
View File

@ -116,6 +116,7 @@ struct SDCardClass {
* Return: byte value read
*/
uint8_t (*read_byte)(SDState *sd);
bool (*receive_ready)(SDState *sd);
bool (*data_ready)(SDState *sd);
void (*set_voltage)(SDState *sd, uint16_t millivolts);
uint8_t (*get_dat_lines)(SDState *sd);
@ -187,6 +188,7 @@ void sdbus_write_data(SDBus *sdbus, const void *buf, size_t length);
* Read multiple bytes of data on the data lines of a SD bus.
*/
void sdbus_read_data(SDBus *sdbus, void *buf, size_t length);
bool sdbus_receive_ready(SDBus *sd);
bool sdbus_data_ready(SDBus *sd);
bool sdbus_get_inserted(SDBus *sd);
bool sdbus_get_readonly(SDBus *sd);