[PATCH] drm/amd/powerplay:Tonga not to start SMC if SRIOV

[Deucher, Alexander]

> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
> Of Trigger Huang
> Sent: Thursday, November 03, 2016 8:49 AM
> To: amd-gfx at lists.freedesktop.org
> Cc: Liu, Monk; Huang, Trigger
> Subject: [PATCH] drm/amd/powerplay:Tonga not to start SMC if SRIOV
> 
> This patch is used for virtualization support. In virtualization case,
> Tonga SMC should not be started and SMU firmware should not be loaded
> if in SRIOV environment. The same operation will be applied on FIJI in
> other patch.
> 
> Signed-off-by: Monk Liu <Monk.Liu at amd.com>
> Signed-off-by: Trigger Huang <trigger.huang at amd.com>

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c
> b/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c
> index 5f91240..eff9a232 100644
> --- a/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c
> +++ b/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c
> @@ -140,7 +140,8 @@ static int tonga_start_smu(struct pp_smumgr
> *smumgr)
>  	int result;
> 
>  	/* 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))) {
>  		/*Check if SMU is running in protected mode*/
>  		if (0 == SMUM_READ_VFPF_INDIRECT_FIELD(smumgr-
> >device, CGS_IND_REG__SMC,
>  					SMU_FIRMWARE, SMU_MODE)) {
> --
> 2.7.4
> 
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