diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/mcdi.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/mcdi.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c index 3225fe64c397..af338208eae9 100644 --- a/drivers/net/ethernet/sfc/mcdi.c +++ b/drivers/net/ethernet/sfc/mcdi.c @@ -2129,6 +2129,52 @@ fail: return rc; } +/* Failure to read a privilege mask is never fatal, because we can always + * carry on as though we didn't have the privilege we were interested in. + * So use efx_mcdi_rpc_quiet(). + */ +int efx_mcdi_get_privilege_mask(struct efx_nic *efx, u32 *mask) +{ + MCDI_DECLARE_BUF(fi_outbuf, MC_CMD_GET_FUNCTION_INFO_OUT_LEN); + MCDI_DECLARE_BUF(pm_inbuf, MC_CMD_PRIVILEGE_MASK_IN_LEN); + MCDI_DECLARE_BUF(pm_outbuf, MC_CMD_PRIVILEGE_MASK_OUT_LEN); + size_t outlen; + u16 pf, vf; + int rc; + + if (!efx || !mask) + return -EINVAL; + + /* Get our function number */ + rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_FUNCTION_INFO, NULL, 0, + fi_outbuf, MC_CMD_GET_FUNCTION_INFO_OUT_LEN, + &outlen); + if (rc != 0) + return rc; + if (outlen < MC_CMD_GET_FUNCTION_INFO_OUT_LEN) + return -EIO; + + pf = MCDI_DWORD(fi_outbuf, GET_FUNCTION_INFO_OUT_PF); + vf = MCDI_DWORD(fi_outbuf, GET_FUNCTION_INFO_OUT_VF); + + MCDI_POPULATE_DWORD_2(pm_inbuf, PRIVILEGE_MASK_IN_FUNCTION, + PRIVILEGE_MASK_IN_FUNCTION_PF, pf, + PRIVILEGE_MASK_IN_FUNCTION_VF, vf); + + rc = efx_mcdi_rpc_quiet(efx, MC_CMD_PRIVILEGE_MASK, + pm_inbuf, sizeof(pm_inbuf), + pm_outbuf, sizeof(pm_outbuf), &outlen); + + if (rc != 0) + return rc; + if (outlen < MC_CMD_PRIVILEGE_MASK_OUT_LEN) + return -EIO; + + *mask = MCDI_DWORD(pm_outbuf, PRIVILEGE_MASK_OUT_OLD_MASK); + + return 0; +} + #ifdef CONFIG_SFC_MTD #define EFX_MCDI_NVRAM_LEN_MAX 128 |