From: Raffaele Recalcati <raffaele.recalc...@bticino.it>
Defining CONFIG_MMC_TRACE in the include board file it is possible to activate
a tracing support.
This code helps in case of eMMC hw failure or to investigate possible eMMC
initialization issues.
Signed-off-by: Raffaele Recalcati <raffaele.recalc...@bticino.it>
---
drivers/mmc/mmc.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 71 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index acd7479..0dfc83a 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -45,7 +45,60 @@ int board_mmc_getcd(u8 *cd, struct mmc
*mmc)__attribute__((weak,
int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
{
+#ifdef CONFIG_MMC_TRACE
+ int ret;
+ int i;
+ u8 *ptr;
+
+ printf("CMD_SEND:%d\n", cmd->cmdidx);
+ printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
+ printf("\t\tFLAG\t\t\t %d\n", cmd->flags);
+ ret = mmc->send_cmd(mmc, cmd, data);
+ switch (cmd->resp_type) {
+ case MMC_RSP_NONE:
+ printf("\t\tMMC_RSP_NONE\n");
+ break;
+ case MMC_RSP_R1:
+ printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
+ cmd->response[0]);
+ break;
+ case MMC_RSP_R1b:
+ printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
+ cmd->response[0]);
+ break;
+ case MMC_RSP_R2:
+ printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
+ cmd->response[0]);
+ printf("\t\t \t\t 0x%08X \n",
+ cmd->response[1]);
+ printf("\t\t \t\t 0x%08X \n",
+ cmd->response[2]);
+ printf("\t\t \t\t 0x%08X \n",
+ cmd->response[3]);
+ printf("\n");
+ printf("\t\t\t\t\tDUMPING DATA\n");
+ for (i = 0; i < 4; i++) {
+ int j;
+ printf("\t\t\t\t\t%03d - ", i*4);
+ ptr = &cmd->response[i];
+ ptr += 3;
+ for (j = 0; j < 4; j++)
+ printf("%02X ", *ptr--);
+ printf("\n");
+ }
+ break;
+ case MMC_RSP_R3:
+ printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
+ cmd->response[0]);
+ break;
+ default:
+ printf("\t\tERROR MMC rsp not supported\n");
+ break;
+ }
+ return ret;
+#else
return mmc->send_cmd(mmc, cmd, data);
+#endif
}
int mmc_send_status(struct mmc *mmc)
@@ -71,6 +124,10 @@ int mmc_send_status(struct mmc *mmc)
}
} while (!(cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) && timeout--);
+#ifdef CONFIG_MMC_TRACE
+ status = (cmd.response[0] & MMC_STATUS_CURR_STATE) >> 9;
+ printf("CURR STATE:%d\n", status);
+#endif
return 0;
}
@@ -418,6 +475,20 @@ int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd)
err = mmc_send_cmd(mmc, &cmd, &data);
+#ifdef CONFIG_MMC_TRACE
+ {
+ int i;
+ printf("\n");
+ printf("MMC_SEND_EXT_CSD: DUMPING DATA\n");
+ for (i = 0; i < 32; i++) {
+ int j;
+ printf("%03d - ", i*16);
+ for (j = 0; j < 16; j++)
+ printf("%02X ", data.dest[j+i*16]);
+ printf("\n");
+ }
+ }
+#endif
return err;
}
--
1.7.0.4
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