[PATCH] drm/amdgpu: support dpm level modification under virtualization
Quan, Evan
Evan.Quan at amd.com
Wed Apr 10 09:58:29 UTC 2019
> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of
> Yintian Tao
> Sent: 2019年4月9日 23:18
> To: amd-gfx at lists.freedesktop.org
> Cc: Tao, Yintian <Yintian.Tao at amd.com>
> Subject: [PATCH] drm/amdgpu: support dpm level modification under
> virtualization
>
> 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.
>
> Change-Id: I713419c57b854082f6f739f1d32a055c7115e620
> Signed-off-by: Yintian Tao <yttao at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 ++
> drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 15 ++++++
> drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 33 +++++++++++++
> drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 11 +++++
> drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 78
> ++++++++++++++++++++++++++++++
> drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h | 6 +++
> 7 files changed, 147 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index 3ff8899..bb0fd5a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -2486,6 +2486,7 @@ int amdgpu_device_init(struct amdgpu_device
> *adev,
> mutex_init(&adev->virt.vf_errors.lock);
> hash_init(adev->mn_hash);
> mutex_init(&adev->lock_reset);
> + mutex_init(&adev->virt.dpm_mutex);
>
> amdgpu_device_check_arguments(adev);
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index 6190495..1353955 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -727,6 +727,9 @@ static int amdgpu_info_ioctl(struct drm_device *dev,
> void *data, struct drm_file
> if (adev->pm.dpm_enabled) {
> dev_info.max_engine_clock =
> amdgpu_dpm_get_sclk(adev, false) * 10;
> dev_info.max_memory_clock =
> amdgpu_dpm_get_mclk(adev, false) * 10;
> + } else if (amdgpu_sriov_vf(adev)) {
> + dev_info.max_engine_clock =
> amdgpu_virt_get_sclk(adev, false) * 10;
> + dev_info.max_memory_clock =
> amdgpu_virt_get_mclk(adev, false) * 10;
> } else {
> dev_info.max_engine_clock = adev-
> >clock.default_sclk * 10;
> dev_info.max_memory_clock = adev-
> >clock.default_mclk * 10; diff --git
> a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> index 5540259..0162d1e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> @@ -380,6 +380,17 @@ static ssize_t
> amdgpu_set_dpm_forced_performance_level(struct device *dev,
> goto fail;
> }
>
> + if (amdgpu_sriov_vf(adev)) {
> + if (amdgim_is_hwperf(adev) &&
> + adev->virt.ops->force_dpm_level) {
> + mutex_lock(&adev->pm.mutex);
> + adev->virt.ops->force_dpm_level(adev, level);
> + mutex_unlock(&adev->pm.mutex);
> + return count;
> + } else
> + return -EINVAL;
> + }
> +
> if (current_level == level)
> return count;
>
> @@ -843,6 +854,10 @@ static ssize_t amdgpu_get_pp_dpm_sclk(struct
> device *dev,
> struct drm_device *ddev = dev_get_drvdata(dev);
> struct amdgpu_device *adev = ddev->dev_private;
>
> + if (amdgpu_sriov_vf(adev) && amdgim_is_hwperf(adev) &&
> + adev->virt.ops->get_pp_clk)
> + return adev->virt.ops->get_pp_clk(adev, PP_SCLK, buf);
> +
> if (is_support_sw_smu(adev))
> return smu_print_clk_levels(&adev->smu, PP_SCLK, buf);
> else if (adev->powerplay.pp_funcs->print_clock_levels)
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> index 462a04e..ae4b2a1 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> @@ -375,4 +375,37 @@ void amdgpu_virt_init_data_exchange(struct
> amdgpu_device *adev)
> }
> }
>
> +static uint32_t parse_clk(char *buf, bool min) {
> + char *ptr = buf;
> + uint32_t clk = 0;
> +
> + do {
> + ptr = strchr(ptr, ':');
> + if (!ptr)
> + break;
> + ptr+=2;
> + clk = simple_strtoul(ptr, NULL, 10);
> + } while (!min);
> +
> + return clk * 100;
> +}
> +
> +uint32_t amdgpu_virt_get_sclk(struct amdgpu_device *adev, bool lowest)
> +{
> + char buf[512] = {0};
[Quan, Evan] In xgpu_ai_get_pp_clk, the max buffer size seems PAGE_SIZE. Maybe this should be aligned with that.
> +
> + adev->virt.ops->get_pp_clk(adev, PP_SCLK, buf);
[Quan, Evan] Better to check existence of adev->virt.ops->get_pp_clk before dereference it. As what you did in amdgpu_set_dpm_forced_performance_level.
> +
> + return parse_clk(buf, lowest);
> +}
> +
> +uint32_t amdgpu_virt_get_mclk(struct amdgpu_device *adev, bool lowest)
> +{
> + char buf[512] = {0};
> +
> + adev->virt.ops->get_pp_clk(adev, PP_MCLK, buf);
> +
> + return parse_clk(buf, lowest);
> +}
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> index 722deef..584947b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> @@ -57,6 +57,8 @@ struct amdgpu_virt_ops {
> int (*reset_gpu)(struct amdgpu_device *adev);
> int (*wait_reset)(struct amdgpu_device *adev);
> void (*trans_msg)(struct amdgpu_device *adev, u32 req, u32 data1,
> u32 data2, u32 data3);
> + int (*get_pp_clk)(struct amdgpu_device *adev, u32 type, char *buf);
> + int (*force_dpm_level)(struct amdgpu_device *adev, u32 level);
> };
>
> /*
> @@ -83,6 +85,8 @@ enum AMDGIM_FEATURE_FLAG {
> AMDGIM_FEATURE_GIM_LOAD_UCODES = 0x2,
> /* VRAM LOST by GIM */
> AMDGIM_FEATURE_GIM_FLR_VRAMLOST = 0x4,
> + /* HW PERF SIM in GIM */
> + AMDGIM_FEATURE_HW_PERF_SIMULATION = (1 << 3),
> };
>
> struct amd_sriov_msg_pf2vf_info_header { @@ -252,6 +256,8 @@ struct
> amdgpu_virt {
> struct amdgpu_vf_error_buffer vf_errors;
> struct amdgpu_virt_fw_reserve fw_reserve;
> uint32_t gim_feature;
> + /* protect DPM events to GIM */
> + struct mutex dpm_mutex;
> };
>
> #define amdgpu_sriov_enabled(adev) \
> @@ -278,6 +284,9 @@ static inline bool is_virtual_machine(void) #endif }
>
> +#define amdgim_is_hwperf(adev) \
> + ((adev)->virt.gim_feature &
> AMDGIM_FEATURE_HW_PERF_SIMULATION)
> +
> bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev); void
> amdgpu_virt_init_setting(struct amdgpu_device *adev); uint32_t
> amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg); @@ -
> 295,5 +304,7 @@ int amdgpu_virt_fw_reserve_get_checksum(void *obj,
> unsigned long obj_size,
> unsigned int key,
> unsigned int chksum);
> void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev);
> +uint32_t amdgpu_virt_get_sclk(struct amdgpu_device *adev, bool lowest);
> +uint32_t amdgpu_virt_get_mclk(struct amdgpu_device *adev, bool lowest);
>
> #endif
> diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> index 73851eb..8dbad49 100644
> --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> @@ -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,
> };
> diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h
> b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h
> index b4a9cee..39d151b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h
> +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.h
> @@ -35,6 +35,10 @@ enum idh_request {
> IDH_REL_GPU_FINI_ACCESS,
> IDH_REQ_GPU_RESET_ACCESS,
>
> + IDH_IRQ_FORCE_DPM_LEVEL = 10,
> + IDH_IRQ_GET_PP_SCLK,
> + IDH_IRQ_GET_PP_MCLK,
> +
> IDH_LOG_VF_ERROR = 200,
> };
>
> @@ -43,6 +47,8 @@ enum idh_event {
> IDH_READY_TO_ACCESS_GPU,
> IDH_FLR_NOTIFICATION,
> IDH_FLR_NOTIFICATION_CMPL,
> + IDH_SUCCESS,
> + IDH_FAIL,
> IDH_EVENT_MAX
> };
>
> --
> 2.7.4
>
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