diff options
Diffstat (limited to 'hw/sd/sd.c')
| -rw-r--r-- | hw/sd/sd.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 78aabb65ac..990f038b79 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1095,6 +1095,22 @@ static sd_rsp_type_t sd_cmd_unimplemented(SDState *sd, SDRequest req) return sd_illegal; } +/* Configure fields for following sd_generic_write_byte() calls */ +__attribute__((unused)) +static sd_rsp_type_t sd_cmd_to_receivingdata(SDState *sd, SDRequest req, + uint64_t start, size_t size) +{ + if (sd->state != sd_transfer_state) { + return sd_invalid_state_for_cmd(sd, req); + } + sd->state = sd_receivingdata_state; + sd->data_start = start; + sd->data_offset = 0; + /* sd->data[] used as receive buffer */ + sd->data_size = size ?: sizeof(sd->data); + return sd_r1; +} + /* Configure fields for following sd_generic_read_byte() calls */ static sd_rsp_type_t sd_cmd_to_sendingdata(SDState *sd, SDRequest req, uint64_t start, @@ -1943,6 +1959,19 @@ send_response: return rsplen; } +/* Return true if buffer is consumed. Configured by sd_cmd_to_receivingdata() */ +__attribute__((unused)) +static bool sd_generic_write_byte(SDState *sd, uint8_t value) +{ + sd->data[sd->data_offset] = value; + + if (++sd->data_offset >= sd->data_size) { + sd->state = sd_transfer_state; + return true; + } + return false; +} + /* Return true when buffer is consumed. Configured by sd_cmd_to_sendingdata() */ static bool sd_generic_read_byte(SDState *sd, uint8_t *value) { |