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The difference is that [...] the data block is not a memory payload data but has a vendor specific format and meaning. Thus this block must not be stored overwriting data block on underlying storage drive. Keep it in a dedicated 'vendor_data[]' array. Signed-off-by: Philippe Mathieu-Daudé --- v43: Do not re-use VMSTATE_UNUSED_V (danpb) v44: Use subsection (Luc) v45: Remove APP_READ_BLOCK/APP_WRITE_BLOCK macros --- hw/sd/sd.c | 29 +++++++++++++++++++---------- 1 file changed, 19 insertions(+), 10 deletions(-) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index a08a452d81..5d58937dd4 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -153,6 +153,8 @@ struct SDState { uint32_t data_offset; size_t data_size; uint8_t data[512]; + uint8_t vendor_data[512]; + qemu_irq readonly_cb; qemu_irq inserted_cb; QEMUTimer *ocr_power_timer; @@ -719,6 +721,7 @@ static void sd_reset(DeviceState *dev) sd->wp_switch = sd->blk ? !blk_is_writable(sd->blk) : false; sd->wp_group_bits = sect; sd->wp_group_bmap = bitmap_new(sd->wp_group_bits); + memset(sd->vendor_data, 0xec, sizeof(sd->vendor_data)); memset(sd->function_group, 0, sizeof(sd->function_group)); sd->erase_start = INVALID_ADDRESS; sd->erase_end = INVALID_ADDRESS; @@ -793,6 +796,16 @@ static const VMStateDescription sd_ocr_vmstate = { }, }; +static const VMStateDescription sd_vendordata_vmstate = { + .name = "sd-card/vendor_data-state", + .version_id = 1, + .minimum_version_id = 1, + .fields = (const VMStateField[]) { + VMSTATE_UINT8_ARRAY(vendor_data, SDState, 512), + VMSTATE_END_OF_LIST() + }, +}; + static int sd_vmstate_pre_load(void *opaque) { SDState *sd = opaque; @@ -840,6 +853,7 @@ static const VMStateDescription sd_vmstate = { }, .subsections = (const VMStateDescription * const []) { &sd_ocr_vmstate, + &sd_vendordata_vmstate, NULL }, }; @@ -902,9 +916,6 @@ static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len) } } -#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) -#define APP_WRITE_BLOCK(a, len) - static void sd_erase(SDState *sd) { uint64_t erase_start = sd->erase_start; @@ -2187,9 +2198,8 @@ void sd_write_byte(SDState *sd, uint8_t value) break; case 56: /* CMD56: GEN_CMD */ - sd->data[sd->data_offset ++] = value; - if (sd->data_offset >= sd->blk_len) { - APP_WRITE_BLOCK(sd->data_start, sd->data_offset); + sd->vendor_data[sd->data_offset++] = value; + if (sd->data_offset >= sizeof(sd->vendor_data)) { sd->state = sd_transfer_state; } break; @@ -2261,12 +2271,11 @@ uint8_t sd_read_byte(SDState *sd) break; case 56: /* CMD56: GEN_CMD */ - if (sd->data_offset == 0) - APP_READ_BLOCK(sd->data_start, sd->blk_len); - ret = sd->data[sd->data_offset ++]; + ret = sd->vendor_data[sd->data_offset++]; - if (sd->data_offset >= sd->blk_len) + if (sd->data_offset >= sizeof(sd->vendor_data)) { sd->state = sd_transfer_state; + } break; default: