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authorHariprasad Shenai <hariprasad@chelsio.com>2015-08-28 11:17:12 +0530
committerDavid S. Miller <davem@davemloft.net>2015-08-28 13:49:07 -0700
commita69265e9f65a6747c27b01b4030ad85d71aa11ba (patch)
tree9dab2c7f7c449ff377c8a45d71fa5cdaac1d4723 /drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
parent8b72ca67fed39816b732b0cf53a1c7f2efc6400d (diff)
cxgb4: Force uninitialized state if FW in adapter is unsupported
Forcing uninitialized state allows us to upgrade and reinitialize the adapter. FW_VERSION_T4 = 1.4.0.0 FW_VERSION_T5 = 0.0.0.0 FW_VERSION_T6 = 0.0.0.0 At this point driver supports above and greater than above version. If FW in adapter < min FW_VERSION driver supports tries to upgrade the FW If FW in adapter >= FW_VERSION driver supports then it follows normal path Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/t4_hw.c')
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/t4_hw.c56
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?
*/