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drm/amdgpu: support dpm level modification under virtualization v3

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Under vega10 virtualuzation, smu ip block will not be added.
Therefore, we need add pp clk query and force dpm level function
at amdgpu_virt_ops to support the feature.

v2: add get_pp_clk existence check and use kzalloc to allocate buf

v3: return -ENOMEM for allocation failure and correct the coding style

Signed-off-by: Yintian Tao <yttao@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yintian Tao
2019-04-09 20:33:20 +08:00
committed by Alex Deucher
parent b0960c3592
commit bb5a2bdf36
7 changed files with 165 additions and 0 deletions
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78
drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
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@@ -157,6 +157,82 @@ static void xgpu_ai_mailbox_trans_msg (struct amdgpu_device *adev,
xgpu_ai_mailbox_set_valid(adev, false);
}
static int xgpu_ai_get_pp_clk(struct amdgpu_device *adev, u32 type, char *buf)
{
int r = 0;
u32 req, val, size;
if (!amdgim_is_hwperf(adev) || buf == NULL)
return -EBADRQC;
switch(type) {
case PP_SCLK:
req = IDH_IRQ_GET_PP_SCLK;
break;
case PP_MCLK:
req = IDH_IRQ_GET_PP_MCLK;
break;
default:
return -EBADRQC;
}
mutex_lock(&adev->virt.dpm_mutex);
xgpu_ai_mailbox_trans_msg(adev, req, 0, 0, 0);
r = xgpu_ai_poll_msg(adev, IDH_SUCCESS);
if (!r && adev->fw_vram_usage.va != NULL) {
val = RREG32_NO_KIQ(
SOC15_REG_OFFSET(NBIO, 0,
mmBIF_BX_PF0_MAILBOX_MSGBUF_RCV_DW1));
size = strnlen((((char *)adev->virt.fw_reserve.p_pf2vf) +
val), PAGE_SIZE);
if (size < PAGE_SIZE)
strcpy(buf,((char *)adev->virt.fw_reserve.p_pf2vf + val));
else
size = 0;
r = size;
goto out;
}
r = xgpu_ai_poll_msg(adev, IDH_FAIL);
if(r)
pr_info("%s DPM request failed",
(type == PP_SCLK)? "SCLK" : "MCLK");
out:
mutex_unlock(&adev->virt.dpm_mutex);
return r;
}
static int xgpu_ai_force_dpm_level(struct amdgpu_device *adev, u32 level)
{
int r = 0;
u32 req = IDH_IRQ_FORCE_DPM_LEVEL;
if (!amdgim_is_hwperf(adev))
return -EBADRQC;
mutex_lock(&adev->virt.dpm_mutex);
xgpu_ai_mailbox_trans_msg(adev, req, level, 0, 0);
r = xgpu_ai_poll_msg(adev, IDH_SUCCESS);
if (!r)
goto out;
r = xgpu_ai_poll_msg(adev, IDH_FAIL);
if (!r)
pr_info("DPM request failed");
else
pr_info("Mailbox is broken");
out:
mutex_unlock(&adev->virt.dpm_mutex);
return r;
}
static int xgpu_ai_send_access_requests(struct amdgpu_device *adev,
enum idh_request req)
{
@@ -375,4 +451,6 @@ const struct amdgpu_virt_ops xgpu_ai_virt_ops = {
.reset_gpu = xgpu_ai_request_reset,
.wait_reset = NULL,
.trans_msg = xgpu_ai_mailbox_trans_msg,
.get_pp_clk = xgpu_ai_get_pp_clk,
.force_dpm_level = xgpu_ai_force_dpm_level,
};