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drm/amd/powerplay: add override pcie parameters for Vega20 

It is to solve RDMA performance issue.

Signed-off-by: Eric Huang <JinhuiEric.Huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2019-01-25 16:29:25 -05:00 committed by Alex Deucher
parent 4b5105036a
commit a97c084aad
1 changed files with 46 additions and 0 deletions
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46
drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c
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@ -771,6 +771,47 @@ static int vega20_init_smc_table(struct pp_hwmgr *hwmgr)
return 0;
}
static int vega20_override_pcie_parameters(struct pp_hwmgr *hwmgr)
{
struct amdgpu_device *adev = (struct amdgpu_device *)(hwmgr->adev);
uint32_t pcie_speed = 0, pcie_width = 0, pcie_arg;
int ret;
if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4)
pcie_speed = 16;
else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)
pcie_speed = 8;
else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2)
pcie_speed = 5;
else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1)
pcie_speed = 2;
if (adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X32)
pcie_width = 32;
else if (adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X16)
pcie_width = 16;
else if (adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X12)
pcie_width = 12;
else if (adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X8)
pcie_width = 8;
else if (adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X4)
pcie_width = 4;
else if (adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X2)
pcie_width = 2;
else if (adev->pm.pcie_mlw_mask & CAIL_PCIE_LINK_WIDTH_SUPPORT_X1)
pcie_width = 1;
pcie_arg = pcie_width | (pcie_speed << 8);
ret = smum_send_msg_to_smc_with_parameter(hwmgr,
PPSMC_MSG_OverridePcieParameters, pcie_arg);
PP_ASSERT_WITH_CODE(!ret,
"[OverridePcieParameters] Attempt to override pcie params failed!",
return ret);
return 0;
}
static int vega20_set_allowed_featuresmask(struct pp_hwmgr *hwmgr)
{
struct vega20_hwmgr *data =
@ -1570,6 +1611,11 @@ static int vega20_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
"[EnableDPMTasks] Failed to initialize SMC table!",
return result);
result = vega20_override_pcie_parameters(hwmgr);
PP_ASSERT_WITH_CODE(!result,
"[EnableDPMTasks] Failed to override pcie parameters!",
return result);
result = vega20_run_btc(hwmgr);
PP_ASSERT_WITH_CODE(!result,
"[EnableDPMTasks] Failed to run btc!",