[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 21/32] hw/sd: Add mmc switch function support
From: |
Cédric Le Goater |
Subject: |
[PATCH 21/32] hw/sd: Add mmc switch function support |
Date: |
Mon, 3 Jul 2023 15:24:58 +0200 |
From: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
switch operation in mmc cards, updated the ext_csd register to
request changes in card operations. Here we implement similar
sequence but requests are mostly dummy and make no change.
Implement SWITCH_ERROR if the write operation offset goes beyond length
of ext_csd.
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
[ clg: - ported on SDProto framework ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
hw/sd/sd.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 7332f7a18435..51e2254728a6 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -482,6 +482,7 @@ static void sd_set_rca(SDState *sd)
FIELD(CSR, AKE_SEQ_ERROR, 3, 1)
FIELD(CSR, APP_CMD, 5, 1)
FIELD(CSR, FX_EVENT, 6, 1)
+FIELD(CSR, SWITCH_ERROR, 7, 1)
FIELD(CSR, READY_FOR_DATA, 8, 1)
FIELD(CSR, CURRENT_STATE, 9, 4)
FIELD(CSR, ERASE_RESET, 13, 1)
@@ -878,6 +879,43 @@ static uint32_t sd_wpbits(SDState *sd, uint64_t addr)
return ret;
}
+enum {
+ MMC_CMD6_ACCESS_COMMAND_SET = 0,
+ MMC_CMD6_ACCESS_SET_BITS,
+ MMC_CMD6_ACCESS_CLEAR_BITS,
+ MMC_CMD6_ACCESS_WRITE_BYTE,
+};
+
+static void mmc_function_switch(SDState *sd, uint32_t arg)
+{
+ uint32_t access = extract32(arg, 24, 2);
+ uint32_t index = extract32(arg, 16, 8);
+ uint32_t value = extract32(arg, 8, 8);
+ uint8_t b = sd->ext_csd[index];
+
+ switch (access) {
+ case MMC_CMD6_ACCESS_COMMAND_SET:
+ qemu_log_mask(LOG_UNIMP, "MMC Command set switching not supported\n");
+ return;
+ case MMC_CMD6_ACCESS_SET_BITS:
+ b |= value;
+ break;
+ case MMC_CMD6_ACCESS_CLEAR_BITS:
+ b &= ~value;
+ break;
+ case MMC_CMD6_ACCESS_WRITE_BYTE:
+ b = value;
+ break;
+ }
+
+ if (index >= 192) {
+ sd->card_status |= R_CSR_SWITCH_ERROR_MASK;
+ return;
+ }
+
+ sd->ext_csd[index] = b;
+}
+
static void sd_function_switch(SDState *sd, uint32_t arg)
{
int i, mode, new_func;
@@ -2263,6 +2301,19 @@ static sd_rsp_type_t emmc_cmd_SEND_TUNING_BLOCK(SDState
*sd, SDRequest req)
return sd_r1;
}
+static sd_rsp_type_t emmc_cmd_SWITCH_FUNCTION(SDState *sd, SDRequest req)
+{
+ switch (sd->state) {
+ case sd_transfer_state:
+ sd->state = sd_programming_state;
+ mmc_function_switch(sd, req.arg);
+ sd->state = sd_transfer_state;
+ return sd_r1b;
+ default:
+ return sd_invalid_state_for_cmd(sd, req);
+ }
+}
+
static const SDProto sd_proto_emmc = {
.name = "eMMC",
.cmd = {
@@ -2271,6 +2322,7 @@ static const SDProto sd_proto_emmc = {
[2] = emmc_cmd_ALL_SEND_CID,
[3] = emmc_cmd_SEND_RELATIVE_ADDR,
[5] = sd_cmd_illegal,
+ [6] = emmc_cmd_SWITCH_FUNCTION,
[19] = sd_cmd_SEND_TUNING_BLOCK,
[23] = sd_cmd_SET_BLOCK_COUNT,
[21] = emmc_cmd_SEND_TUNING_BLOCK,
--
2.41.0
- [PATCH 09/32] hw/sd: Add sd_cmd_ALL_SEND_CID() handler, (continued)
- [PATCH 09/32] hw/sd: Add sd_cmd_ALL_SEND_CID() handler, Cédric Le Goater, 2023/07/03
- [PATCH 10/32] hw/sd: Add sd_cmd_SEND_RELATIVE_ADDR() handler, Cédric Le Goater, 2023/07/03
- [PATCH 12/32] hw/sd: Add sd_cmd_SET_BLOCK_COUNT() handler, Cédric Le Goater, 2023/07/03
- [PATCH 11/32] hw/sd: Add sd_cmd_SEND_TUNING_BLOCK() handler, Cédric Le Goater, 2023/07/03
- [PATCH 13/32] hw/sd: Introduce a "sd-card" SPI variant model, Cédric Le Goater, 2023/07/03
- [PATCH 14/32] hw/sd: Basis for eMMC support, Cédric Le Goater, 2023/07/03
- [PATCH 15/32] hw/sd: Add emmc_cmd_SEND_OP_CMD() handler, Cédric Le Goater, 2023/07/03
- [PATCH 16/32] hw/sd: Add emmc_cmd_ALL_SEND_CID() handler, Cédric Le Goater, 2023/07/03
- [PATCH 17/32] hw/sd: Add emmc_cmd_SEND_RELATIVE_ADDR() handler, Cédric Le Goater, 2023/07/03
- [PATCH 18/32] hw/sd: Add emmc_cmd_APP_CMD() handler, Cédric Le Goater, 2023/07/03
- [PATCH 21/32] hw/sd: Add mmc switch function support,
Cédric Le Goater <=
- [PATCH 22/32] hw/sd: Add emmc_cmd_SEND_EXT_CSD() handler, Cédric Le Goater, 2023/07/03
- [PATCH 19/32] hw/sd: add emmc_cmd_SEND_TUNING_BLOCK() handler, Cédric Le Goater, 2023/07/03
- [PATCH 20/32] hw/sd: Add CMD21 tuning sequence, Cédric Le Goater, 2023/07/03
- [PATCH 23/32] hw/sd: Support boot area in emmc image, Cédric Le Goater, 2023/07/03
- [PATCH 24/32] hw/sd: Subtract bootarea size from blk, Cédric Le Goater, 2023/07/03
- [PATCH 25/32] hw/sd: Add boot config support, Cédric Le Goater, 2023/07/03
- [PATCH 26/32] hw/sd: Fix SET_BLOCK_COUNT command argument, Cédric Le Goater, 2023/07/03
- [PATCH 28/32] hw/arm/aspeed: Add eMMC device, Cédric Le Goater, 2023/07/03
- [PATCH 30/32] hw/arm/aspeed: Set boot device to emmc, Cédric Le Goater, 2023/07/03
- [PATCH 31/32] aspeed: Set bootconfig, Cédric Le Goater, 2023/07/03