drm/amdgpu:bypass avfs event manager for sriov

This patch is used for virtualization support. In virtualization case,
the initialization sequences are not totally the same as
non-Virtualization's. The avfs event manager should be bypassed if in
SRIOV virtualization case. At the same, this patch will also bypass
starting SMC within SRIOV in FIJI, so the SMU firmware loading will be
avoid, which is required in SRIOV.

Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Trigger Huang <trigger.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c
index b86e48f..26eff56 100755 (executable)
--- a/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c
@@ -396,7 +396,8 @@ static int fiji_start_smu(struct pp_smumgr *smumgr)
        struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
 
        /* Only start SMC if SMC RAM is not running */
-       if (!smu7_is_smc_ram_running(smumgr)) {
+       if (!(smu7_is_smc_ram_running(smumgr)
+               || cgs_is_virtualization_enabled(smumgr->device))) {
                fiji_avfs_event_mgr(smumgr, false);
 
                /* Check if SMU is running in protected mode */
@@ -443,6 +444,9 @@ static bool fiji_is_hw_avfs_present(struct pp_smumgr *smumgr)
        uint32_t efuse = 0;
        uint32_t mask = (1 << ((AVFS_EN_MSB - AVFS_EN_LSB) + 1)) - 1;
 
+       if (cgs_is_virtualization_enabled(smumgr->device))
+               return 0;
+
        if (!atomctrl_read_efuse(smumgr->device, AVFS_EN_LSB, AVFS_EN_MSB,
                        mask, &efuse)) {
                if (efuse)