diff options
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/t4_hw.c')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index ac368efe2862..44806253c178 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -37,6 +37,7 @@ #include "t4_regs.h" #include "t4_values.h" #include "t4fw_api.h" +#include "t4fw_version.h" /** * t4_wait_op_done_val - wait until an operation is completed @@ -2166,6 +2167,61 @@ int t4_get_exprom_version(struct adapter *adap, u32 *vers) return 0; } +/** + * t4_check_fw_version - check if the FW is supported with this driver + * @adap: the adapter + * + * Checks if an adapter's FW is compatible with the driver. Returns 0 + * if there's exact match, a negative error if the version could not be + * read or there's a major version mismatch + */ +int t4_check_fw_version(struct adapter *adap) +{ + int ret, major, minor, micro; + int exp_major, exp_minor, exp_micro; + unsigned int chip_version = CHELSIO_CHIP_VERSION(adap->params.chip); + + ret = t4_get_fw_version(adap, &adap->params.fw_vers); + if (ret) + return ret; + + major = FW_HDR_FW_VER_MAJOR_G(adap->params.fw_vers); + minor = FW_HDR_FW_VER_MINOR_G(adap->params.fw_vers); + micro = FW_HDR_FW_VER_MICRO_G(adap->params.fw_vers); + + switch (chip_version) { + case CHELSIO_T4: + exp_major = T4FW_MIN_VERSION_MAJOR; + exp_minor = T4FW_MIN_VERSION_MINOR; + exp_micro = T4FW_MIN_VERSION_MICRO; + break; + case CHELSIO_T5: + exp_major = T5FW_MIN_VERSION_MAJOR; + exp_minor = T5FW_MIN_VERSION_MINOR; + exp_micro = T5FW_MIN_VERSION_MICRO; + break; + case CHELSIO_T6: + exp_major = T6FW_MIN_VERSION_MAJOR; + exp_minor = T6FW_MIN_VERSION_MINOR; + exp_micro = T6FW_MIN_VERSION_MICRO; + break; + default: + dev_err(adap->pdev_dev, "Unsupported chip type, %x\n", + adap->chip); + return -EINVAL; + } + + if (major < exp_major || (major == exp_major && minor < exp_minor) || + (major == exp_major && minor == exp_minor && micro < exp_micro)) { + dev_err(adap->pdev_dev, + "Card has firmware version %u.%u.%u, minimum " + "supported firmware is %u.%u.%u.\n", major, minor, + micro, exp_major, exp_minor, exp_micro); + return -EFAULT; + } + return 0; +} + /* Is the given firmware API compatible with the one the driver was compiled * with? */ |