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cxgbe(4): Fall back to a failsafe configuration built into the firmware

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if an error is reported while pre-processing the configuration file that
the driver attempted to use.

Also, allow the user to explicitly use the built-in configuration with
hw.cxgbe.config_file="built-in"

MFC after:	2 days
Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2018-05-16 17:55:16 +00:00
parent 964b24b42d
commit 47ae7a7e4f
1 changed files with 29 additions and 4 deletions
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33
sys/dev/cxgbe/t4_main.c
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@ -379,9 +379,10 @@ int t4_intr_types = INTR_MSIX | INTR_MSI | INTR_INTX;
TUNABLE_INT("hw.cxgbe.interrupt_types", &t4_intr_types);
/*
* Configuration file.
* Configuration file. All the _CF names here are special.
*/
#define DEFAULT_CF "default"
#define BUILTIN_CF "built-in"
#define FLASH_CF "flash"
#define UWIRE_CF "uwire"
#define FPGA_CF "fpga"
@ -3342,7 +3343,8 @@ partition_resources(struct adapter *sc, const struct firmware *default_cfg,
snprintf(sc->cfg_file, sizeof(sc->cfg_file), UWIRE_CF);
if (is_fpga(sc))
snprintf(sc->cfg_file, sizeof(sc->cfg_file), FPGA_CF);
}
} else if (strncmp(t4_cfg_file, BUILTIN_CF, sizeof(t4_cfg_file)) == 0)
goto use_built_in_config; /* go straight to config. */
/*
* We need to load another module if the profile is anything except
@ -3453,8 +3455,31 @@ use_config_on_flash:
if (rc != 0) {
device_printf(sc->dev,
"failed to pre-process config file: %d "
"(mtype %d, moff 0x%x).\n", rc, mtype, moff);
goto done;
"(mtype %d, moff 0x%x). Will reset the firmware and retry "
"with the built-in configuration.\n", rc, mtype, moff);
rc = -t4_fw_reset(sc, sc->mbox, F_PIORSTMODE | F_PIORST);
if (rc != 0) {
device_printf(sc->dev,
"firmware reset failed: %d.\n", rc);
if (rc != ETIMEDOUT && rc != EIO) {
t4_fw_bye(sc, sc->mbox);
sc->flags &= ~FW_OK;
}
goto done;
}
snprintf(sc->cfg_file, sizeof(sc->cfg_file), "%s", "built-in");
use_built_in_config:
bzero(&caps, sizeof(caps));
caps.op_to_write = htobe32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
F_FW_CMD_REQUEST | F_FW_CMD_READ);
caps.cfvalid_to_len16 = htobe32(FW_LEN16(caps));
rc = t4_wr_mbox(sc, sc->mbox, &caps, sizeof(caps), &caps);
if (rc != 0) {
device_printf(sc->dev,
"built-in configuration failed: %d.\n", rc);
goto done;
}
}
finicsum = be32toh(caps.finicsum);