This patch updates SD card emulation to support save/load of card's state.
Signed-off-by: Igor Mitsyanko <i.mitsya...@samsung.com>
---
hw/sd.c | 89 +++++++++++++++++++++++++++++++++++++++++++++-----------------
1 files changed, 64 insertions(+), 25 deletions(-)
diff --git a/hw/sd.c b/hw/sd.c
index 7160e8c..6f6be88 100644
--- a/hw/sd.c
+++ b/hw/sd.c
@@ -55,24 +55,28 @@ typedef enum {
sd_illegal = -2,
} sd_rsp_type_t;
+enum {
+ sd_inactive,
+ sd_card_identification_mode,
+ sd_data_transfer_mode,
+};
+
+enum {
+ sd_inactive_state = -1,
+ sd_idle_state = 0,
+ sd_ready_state,
+ sd_identification_state,
+ sd_standby_state,
+ sd_transfer_state,
+ sd_sendingdata_state,
+ sd_receivingdata_state,
+ sd_programming_state,
+ sd_disconnect_state,
+};
+
struct SDState {
- enum {
- sd_inactive,
- sd_card_identification_mode,
- sd_data_transfer_mode,
- } mode;
- enum {
- sd_inactive_state = -1,
- sd_idle_state = 0,
- sd_ready_state,
- sd_identification_state,
- sd_standby_state,
- sd_transfer_state,
- sd_sendingdata_state,
- sd_receivingdata_state,
- sd_programming_state,
- sd_disconnect_state,
- } state;
+ uint32_t mode;
+ int32_t state;
uint32_t ocr;
uint8_t scr[8];
uint8_t cid[16];
@@ -83,21 +87,22 @@ struct SDState {
uint32_t vhs;
bool wp_switch;
unsigned long *wp_groups;
+ uint32_t wpgrps_size;
uint64_t size;
- int blk_len;
+ uint32_t blk_len;
uint32_t erase_start;
uint32_t erase_end;
uint8_t pwd[16];
- int pwd_len;
- int function_group[6];
+ uint32_t pwd_len;
+ uint8_t function_group[6];
bool spi;
- int current_cmd;
+ uint8_t current_cmd;
/* True if we will handle the next command as an ACMD. Note that this does
* *not* track the APP_CMD status bit!
*/
bool expecting_acmd;
- int blk_written;
+ uint32_t blk_written;
uint64_t data_start;
uint32_t data_offset;
uint8_t data[512];
@@ -416,8 +421,9 @@ static void sd_reset(SDState *sd, BlockDriverState *bdrv)
if (sd->wp_groups)
g_free(sd->wp_groups);
sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : false;
+ sd->wpgrps_size = BITS_TO_LONGS(sect);
sd->wp_groups = bitmap_new(sect);
- memset(sd->function_group, 0, sizeof(int) * 6);
+ memset(sd->function_group, 0, sizeof(sd->function_group));
sd->erase_start = 0;
sd->erase_end = 0;
sd->size = size;
@@ -441,6 +447,39 @@ static const BlockDevOps sd_block_ops = {
.change_media_cb = sd_cardchange,
};
+static const VMStateDescription sd_vmstate = {
+ .name = "sd-card",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(mode, SDState),
+ VMSTATE_INT32(state, SDState),
+ VMSTATE_UINT8_ARRAY(cid, SDState, 16),
+ VMSTATE_UINT8_ARRAY(csd, SDState, 16),
+ VMSTATE_UINT16(rca, SDState),
+ VMSTATE_UINT32(card_status, SDState),
+ VMSTATE_PARTIAL_BUFFER(sd_status, SDState, 1),
+ VMSTATE_UINT32(vhs, SDState),
+ VMSTATE_BUFFER_MULTIPLY(wp_groups, SDState, 1, NULL, 0, wpgrps_size,
+ sizeof(unsigned long)),
+ VMSTATE_UINT32(blk_len, SDState),
+ VMSTATE_UINT32(erase_start, SDState),
+ VMSTATE_UINT32(erase_end, SDState),
+ VMSTATE_UINT8_ARRAY(pwd, SDState, 16),
+ VMSTATE_UINT32(pwd_len, SDState),
+ VMSTATE_UINT8_ARRAY(function_group, SDState, 6),
+ VMSTATE_UINT8(current_cmd, SDState),
+ VMSTATE_BOOL(expecting_acmd, SDState),
+ VMSTATE_UINT32(blk_written, SDState),
+ VMSTATE_UINT64(data_start, SDState),
+ VMSTATE_UINT32(data_offset, SDState),
+ VMSTATE_UINT8_ARRAY(data, SDState, 512),
+ VMSTATE_BUFFER_UNSAFE(buf, SDState, 1, 512),
+ VMSTATE_BOOL(enable, SDState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
/* We do not model the chip select pin, so allow the board to select
whether card should be in SSI or MMC/SD mode. It is also up to the
board to ensure that ssi transfers only occur when the chip select
@@ -458,6 +497,7 @@ SDState *sd_init(BlockDriverState *bs, bool is_spi)
bdrv_attach_dev_nofail(sd->bdrv, sd);
bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd);
}
+ vmstate_register(NULL, -1, &sd_vmstate, sd);
return sd;
}
@@ -565,8 +605,7 @@ static void sd_lock_command(SDState *sd)
sd->card_status |= LOCK_UNLOCK_FAILED;
return;
}
- bitmap_zero(sd->wp_groups, BITS_TO_LONGS((sd->size >> (HWBLOCK_SHIFT +
- SECTOR_SHIFT + WPGROUP_SHIFT)) + 1));
+ bitmap_zero(sd->wp_groups, sd->wpgrps_size);
sd->csd[14] &= ~0x10;
sd->card_status &= ~CARD_IS_LOCKED;
sd->pwd_len = 0;
--
1.7.4.1
