sfc: Implement NVRAM selftest for SFC9000 family

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/net/sfc/mcdi.c b/drivers/net/sfc/mcdi.c
index e9f0e5ee4519..86610db2cff5 100644
--- a/drivers/net/sfc/mcdi.c
+++ b/drivers/net/sfc/mcdi.c
@@ -896,6 +896,52 @@ fail:
         return rc;
 }
 
+static int efx_mcdi_nvram_test(struct efx_nic *efx, unsigned int type)
+{
+        u8 inbuf[MC_CMD_NVRAM_TEST_IN_LEN];
+        u8 outbuf[MC_CMD_NVRAM_TEST_OUT_LEN];
+        int rc;
+
+        MCDI_SET_DWORD(inbuf, NVRAM_TEST_IN_TYPE, type);
+
+        rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TEST, inbuf, sizeof(inbuf),
+                          outbuf, sizeof(outbuf), NULL);
+        if (rc)
+                return rc;
+
+        switch (MCDI_DWORD(outbuf, NVRAM_TEST_OUT_RESULT)) {
+        case MC_CMD_NVRAM_TEST_PASS:
+        case MC_CMD_NVRAM_TEST_NOTSUPP:
+                return 0;
+        default:
+                return -EIO;
+        }
+}
+
+int efx_mcdi_nvram_test_all(struct efx_nic *efx)
+{
+        u32 nvram_types;
+        unsigned int type;
+        int rc;
+
+        rc = efx_mcdi_nvram_types(efx, &nvram_types);
+        if (rc)
+                return rc;
+
+        type = 0;
+        while (nvram_types != 0) {
+                if (nvram_types & 1) {
+                        rc = efx_mcdi_nvram_test(efx, type);
+                        if (rc)
+                                return rc;
+                }
+                type++;
+                nvram_types >>= 1;
+        }
+
+        return 0;
+}
+
 static int efx_mcdi_read_assertion(struct efx_nic *efx)
 {
         u8 inbuf[MC_CMD_GET_ASSERTS_IN_LEN];