Example: sd_ocr_request: mmc0: 0x0 [] sd_ocr_request: mmc0: 0x51200000 [SDHC or SDXC Supported (HCS) | Maximum Performance (XPC) | Switch to 1.8V (S18R) | 3.3 ~ 3.4] sd_ocr_response: mmc0: 0xff8000 [2.7 ~ 2.8 | 2.8 ~ 2.9 | 2.9 ~ 3.0 | 3.0 ~ 3.1 | 3.1 ~ 3.2 | 3.2 ~ 3.3 | 3.3 ~ 3.4 | 3.4 ~ 3.5 | 3.5 ~ 3.6]
Signed-off-by: Raul E Rangel <[email protected]> --- drivers/mmc/core/sd_ops.c | 6 +++ include/trace/events/mmc.h | 92 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 98 insertions(+) diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c index 0bb0b8419016..4cf0f040f896 100644 --- a/drivers/mmc/core/sd_ops.c +++ b/drivers/mmc/core/sd_ops.c @@ -19,6 +19,8 @@ #include <linux/mmc/mmc.h> #include <linux/mmc/sd.h> +#include <trace/events/mmc.h> + #include "core.h" #include "sd_ops.h" @@ -130,11 +132,15 @@ int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) cmd.arg = ocr; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR; + trace_sd_ocr_request(host, ocr); + for (i = 100; i; i--) { err = mmc_wait_for_app_cmd(host, NULL, &cmd); if (err) break; + trace_sd_ocr_response(host, cmd.resp[0]); + /* if we're just probing, do a single pass */ if (ocr == 0) break; diff --git a/include/trace/events/mmc.h b/include/trace/events/mmc.h index 463cf318d762..8d97810221cd 100644 --- a/include/trace/events/mmc.h +++ b/include/trace/events/mmc.h @@ -10,6 +10,98 @@ #include <linux/mmc/host.h> #include <linux/tracepoint.h> + +#define SD_OCR_REQUEST \ + {SD_OCR_CCS, "SDHC or SDXC Supported (HCS)"}, \ + {SD_OCR_XPC, "Maximum Performance (XPC)"}, \ + {SD_ROCR_S18A, "Switch to 1.8V (S18R)"}, \ + {MMC_VDD_165_195, "1.65 - 1.95"}, \ + {MMC_VDD_20_21, "2.0 ~ 2.1"}, \ + {MMC_VDD_21_22, "2.1 ~ 2.2"}, \ + {MMC_VDD_22_23, "2.2 ~ 2.3"}, \ + {MMC_VDD_23_24, "2.3 ~ 2.4"}, \ + {MMC_VDD_24_25, "2.4 ~ 2.5"}, \ + {MMC_VDD_25_26, "2.5 ~ 2.6"}, \ + {MMC_VDD_26_27, "2.6 ~ 2.7"}, \ + {MMC_VDD_27_28, "2.7 ~ 2.8"}, \ + {MMC_VDD_28_29, "2.8 ~ 2.9"}, \ + {MMC_VDD_29_30, "2.9 ~ 3.0"}, \ + {MMC_VDD_30_31, "3.0 ~ 3.1"}, \ + {MMC_VDD_31_32, "3.1 ~ 3.2"}, \ + {MMC_VDD_32_33, "3.2 ~ 3.3"}, \ + {MMC_VDD_33_34, "3.3 ~ 3.4"}, \ + {MMC_VDD_34_35, "3.4 ~ 3.5"}, \ + {MMC_VDD_35_36, "3.5 ~ 3.6"} \ + +TRACE_EVENT(sd_ocr_request, + + TP_PROTO(struct mmc_host *host, u32 ocr), + + TP_ARGS(host, ocr), + + TP_STRUCT__entry( + __field(u32, ocr) + __string(name, mmc_hostname(host)) + ), + + TP_fast_assign( + __entry->ocr = ocr; + __assign_str(name, mmc_hostname(host)); + ), + + TP_printk("%s: %#x [%s]", + __get_str(name), + __entry->ocr, + __print_flags(__entry->ocr, " | ", SD_OCR_REQUEST) + ) +); + +#define SD_OCR_RESPONSE \ + {MMC_CARD_BUSY, "Ready"}, \ + {SD_OCR_CCS, "SDHC or SDXC (CCS)"}, \ + {(1<<29), "UHS-II Card"}, \ + {SD_ROCR_S18A, "1.8V Accepted (S18A)"}, \ + {MMC_VDD_165_195, "1.65 - 1.95"}, \ + {MMC_VDD_20_21, "2.0 ~ 2.1"}, \ + {MMC_VDD_21_22, "2.1 ~ 2.2"}, \ + {MMC_VDD_22_23, "2.2 ~ 2.3"}, \ + {MMC_VDD_23_24, "2.3 ~ 2.4"}, \ + {MMC_VDD_24_25, "2.4 ~ 2.5"}, \ + {MMC_VDD_25_26, "2.5 ~ 2.6"}, \ + {MMC_VDD_26_27, "2.6 ~ 2.7"}, \ + {MMC_VDD_27_28, "2.7 ~ 2.8"}, \ + {MMC_VDD_28_29, "2.8 ~ 2.9"}, \ + {MMC_VDD_29_30, "2.9 ~ 3.0"}, \ + {MMC_VDD_30_31, "3.0 ~ 3.1"}, \ + {MMC_VDD_31_32, "3.1 ~ 3.2"}, \ + {MMC_VDD_32_33, "3.2 ~ 3.3"}, \ + {MMC_VDD_33_34, "3.3 ~ 3.4"}, \ + {MMC_VDD_34_35, "3.4 ~ 3.5"}, \ + {MMC_VDD_35_36, "3.5 ~ 3.6"} + +TRACE_EVENT(sd_ocr_response, + + TP_PROTO(struct mmc_host *host, u32 ocr), + + TP_ARGS(host, ocr), + + TP_STRUCT__entry( + __field(u32, ocr) + __string(name, mmc_hostname(host)) + ), + + TP_fast_assign( + __entry->ocr = ocr; + __assign_str(name, mmc_hostname(host)); + ), + + TP_printk("%s: %#x [%s]", + __get_str(name), + __entry->ocr, + __print_flags(__entry->ocr, " | ", SD_OCR_RESPONSE) + ) +); + #define SD_SCR_WIDTH_FLAGS \ {SD_SCR_BUS_WIDTH_1, "1-BIT"}, \ {SD_SCR_BUS_WIDTH_4, "4-BIT"} -- 2.21.0.392.gf8f6787159e-goog
