[AMD Official Use Only - General]
> -----Original Message-----
> From: amd-gfx <amd-gfx-boun...@lists.freedesktop.org> On Behalf Of
> Bokun Zhang
> Sent: Friday, October 13, 2023 1:43 PM
> To: amd-gfx@lists.freedesktop.org
> Cc: Zhang, Bokun <bokun.zh...@amd.com>
> Subject: [PATCH v3] drm/amd/amdgpu/vcn: Add RB decouple feature under
> SRIOV
>
> - Add code to enable RB decouple feature.
> This feature is controlled by SRIOV host.
> Once enabled, it allows VCN0's job to be remapped to
> VCN1 at hardware level and improves VCN availability
>
Since this is feature is only used by SRIOV, we need to make sure the changes
not affect BM path. Also please split the patch into multiple patches.
> Signed-off-by: Bokun Zhang <bokun.zh...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 3 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h | 52 +++++++++++++--
> drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 4 ++
> drivers/gpu/drm/amd/amdgpu/amdgv_sriovmsg.h | 5 +-
> drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c | 71 ++++++++++++++++-----
> 5 files changed, 110 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> index f4963330c772..7e8c2dbb34fb 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
> @@ -204,6 +204,9 @@ int amdgpu_vcn_sw_init(struct amdgpu_device
> *adev)
> adev->vcn.inst[i].fw_shared.gpu_addr = adev-
> >vcn.inst[i].gpu_addr +
> bo_size - fw_shared_size;
>
> + /* clean up fw share */
> + memset(adev->vcn.inst[i].fw_shared.cpu_addr, 0,
> fw_shared_size);
> +
>
This should be redundant, since it should be got cleared when allocation.
adev->vcn.inst[i].fw_shared.mem_size = fw_shared_size;
>
> if (amdgpu_vcnfw_log) {
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
> index 0815c5a97564..6935ab74f481 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h
> @@ -169,6 +169,9 @@
> #define AMDGPU_VCN_SMU_VERSION_INFO_FLAG (1 << 11) #define
> AMDGPU_VCN_SMU_DPM_INTERFACE_FLAG (1 << 11) #define
> AMDGPU_VCN_VF_RB_SETUP_FLAG (1 << 14)
> +#define AMDGPU_VCN_VF_RB_DECOUPLE_FLAG (1 << 15)
> +
> +#define MAX_NUM_VCN_RB_SETUP 4
>
> #define AMDGPU_VCN_IB_FLAG_DECODE_BUFFER 0x00000001
> #define AMDGPU_VCN_CMD_FLAG_MSG_BUFFER 0x00000001
> @@ -335,22 +338,46 @@ struct amdgpu_fw_shared {
> struct amdgpu_fw_shared_smu_interface_info smu_interface_info; };
>
> +struct amdgpu_vcn_rb_setup_info
> +{
> + uint32_t rb_addr_lo;
> + uint32_t rb_addr_hi;
> + uint32_t rb_size;
> +};
> +
> struct amdgpu_fw_shared_rb_setup {
> uint32_t is_rb_enabled_flags;
> - uint32_t rb_addr_lo;
> - uint32_t rb_addr_hi;
> - uint32_t rb_size;
> - uint32_t rb4_addr_lo;
> - uint32_t rb4_addr_hi;
> - uint32_t rb4_size;
> - uint32_t reserved[6];
> +
> + union {
> + // 12 DWords
This can be removed.
> + struct {
> + uint32_t rb_addr_lo;
> + uint32_t rb_addr_hi;
> + uint32_t rb_size;
> + uint32_t rb4_addr_lo;
> + uint32_t rb4_addr_hi;
> + uint32_t rb4_size;
> + uint32_t reserved[6];
> + };
> +
> + // 12 DWords
Same here.
Regards,
Leo
> + struct {
> + struct amdgpu_vcn_rb_setup_info
> rb_info[MAX_NUM_VCN_RB_SETUP];
> + };
> + };
> };
>
> +
> struct amdgpu_fw_shared_drm_key_wa {
> uint8_t method;
> uint8_t reserved[3];
> };
>
> +struct amdgpu_fw_shared_queue_decouple {
> + uint8_t is_enabled;
> + uint8_t reserved[7];
> +};
> +
> struct amdgpu_vcn4_fw_shared {
> uint32_t present_flag_0;
> uint8_t pad[12];
> @@ -361,6 +388,8 @@ struct amdgpu_vcn4_fw_shared {
> struct amdgpu_fw_shared_rb_setup rb_setup;
> struct amdgpu_fw_shared_smu_interface_info smu_dpm_interface;
> struct amdgpu_fw_shared_drm_key_wa drm_key_wa;
> + uint8_t pad3[9];
> + struct amdgpu_fw_shared_queue_decouple decouple;
> };
>
> struct amdgpu_vcn_fwlog {
> @@ -378,6 +407,15 @@ struct amdgpu_vcn_decode_buffer {
> uint32_t pad[30];
> };
>
> +struct amdgpu_vcn_rb_metadata {
> + uint32_t size;
> + uint32_t present_flag_0;
> +
> + uint8_t version;
> + uint8_t ring_id;
> + uint8_t pad[26];
> +};
> +
> #define VCN_BLOCK_ENCODE_DISABLE_MASK 0x80 #define
> VCN_BLOCK_DECODE_DISABLE_MASK 0x40 #define
> VCN_BLOCK_QUEUE_DISABLE_MASK 0xC0 diff --git
> a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> index fabb83e9d9ae..858ef21ae515 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> @@ -126,6 +126,8 @@ enum AMDGIM_FEATURE_FLAG {
> AMDGIM_FEATURE_INDIRECT_REG_ACCESS = (1 << 5),
> /* AV1 Support MODE*/
> AMDGIM_FEATURE_AV1_SUPPORT = (1 << 6),
> + /* VCN RB decouple */
> + AMDGIM_FEATURE_VCN_RB_DECOUPLE = (1 << 7),
> };
>
> enum AMDGIM_REG_ACCESS_FLAG {
> @@ -326,6 +328,8 @@ static inline bool is_virtual_machine(void)
> ((!amdgpu_in_reset(adev)) && (!adev->virt.tdr_debug)) #define
> amdgpu_sriov_is_av1_support(adev) \
> ((adev)->virt.gim_feature & AMDGIM_FEATURE_AV1_SUPPORT)
> +#define amdgpu_sriov_is_vcn_rb_decouple(adev) \
> + ((adev)->virt.gim_feature & AMDGIM_FEATURE_VCN_RB_DECOUPLE)
> bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev); void
> amdgpu_virt_init_setting(struct amdgpu_device *adev); void
> amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev, diff --git
> a/drivers/gpu/drm/amd/amdgpu/amdgv_sriovmsg.h
> b/drivers/gpu/drm/amd/amdgpu/amdgv_sriovmsg.h
> index 104a5ad8397d..51a14f6d93bd 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgv_sriovmsg.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgv_sriovmsg.h
> @@ -90,10 +90,11 @@ union amd_sriov_msg_feature_flags {
> uint32_t host_load_ucodes : 1;
> uint32_t host_flr_vramlost : 1;
> uint32_t mm_bw_management : 1;
> - uint32_t pp_one_vf_mode : 1;
> + uint32_t pp_one_vf_mode : 1;
> uint32_t reg_indirect_acc : 1;
> uint32_t av1_support : 1;
> - uint32_t reserved : 25;
> + uint32_t vcn_rb_decouple : 1;
> + uint32_t reserved : 24;
> } flags;
> uint32_t all;
> };
> diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
> b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
> index 88e17f5e20b2..bf07aa200030 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
> @@ -176,9 +176,6 @@ static int vcn_v4_0_sw_init(void *handle)
>
> AMDGPU_DRM_KEY_INJECT_WORKAROUND_VCNFW_ASD_HANDSH
> AKING;
> }
>
> - if (amdgpu_sriov_vf(adev))
> - fw_shared->present_flag_0 |=
> cpu_to_le32(AMDGPU_VCN_VF_RB_SETUP_FLAG);
> -
> if (amdgpu_vcnfw_log)
> amdgpu_vcn_fwlog_init(&adev->vcn.inst[i]);
> }
> @@ -1209,6 +1206,24 @@ static int vcn_v4_0_start(struct amdgpu_device
> *adev)
> return 0;
> }
>
> +static int vcn_v4_0_init_ring_metadata(struct amdgpu_device *adev,
> +uint32_t vcn_inst, struct amdgpu_ring *ring_enc) {
> + struct amdgpu_vcn_rb_metadata *rb_metadata = NULL;
> + uint8_t *rb_ptr = (uint8_t *)ring_enc->ring;
> +
> + rb_ptr += ring_enc->ring_size;
> + rb_metadata = (struct amdgpu_vcn_rb_metadata *)rb_ptr;
> +
> + memset(rb_metadata, 0, sizeof(struct amdgpu_vcn_rb_metadata));
> + rb_metadata->size = sizeof(struct amdgpu_vcn_rb_metadata);
> + rb_metadata->present_flag_0 |=
> cpu_to_le32(AMDGPU_VCN_VF_RB_SETUP_FLAG);
> + rb_metadata->present_flag_0 |=
> cpu_to_le32(AMDGPU_VCN_VF_RB_DECOUPLE_FLAG);
> + rb_metadata->version = 1;
> + rb_metadata->ring_id = vcn_inst & 0xFF;
> +
> + return 0;
> +}
> +
> static int vcn_v4_0_start_sriov(struct amdgpu_device *adev) {
> int i;
> @@ -1334,11 +1349,30 @@ static int vcn_v4_0_start_sriov(struct
> amdgpu_device *adev)
> rb_enc_addr = ring_enc->gpu_addr;
>
> rb_setup->is_rb_enabled_flags |= RB_ENABLED;
> - rb_setup->rb_addr_lo = lower_32_bits(rb_enc_addr);
> - rb_setup->rb_addr_hi = upper_32_bits(rb_enc_addr);
> - rb_setup->rb_size = ring_enc->ring_size / 4;
> fw_shared->present_flag_0 |=
> cpu_to_le32(AMDGPU_VCN_VF_RB_SETUP_FLAG);
>
> + if (amdgpu_sriov_is_vcn_rb_decouple(adev)) {
> + vcn_v4_0_init_ring_metadata(adev, i, ring_enc);
> +
> + memset((void *)&rb_setup->rb_info, 0, sizeof(struct
> amdgpu_vcn_rb_setup_info) * MAX_NUM_VCN_RB_SETUP);
> + if (!(adev->vcn.harvest_config & (1 << 0))) {
> + rb_setup->rb_info[0].rb_addr_lo =
> lower_32_bits(adev->vcn.inst[0].ring_enc[0].gpu_addr);
> + rb_setup->rb_info[0].rb_addr_hi =
> upper_32_bits(adev->vcn.inst[0].ring_enc[0].gpu_addr);
> + rb_setup->rb_info[0].rb_size = adev-
> >vcn.inst[0].ring_enc[0].ring_size / 4;
> + }
> + if (!(adev->vcn.harvest_config & (1 << 1))) {
> + rb_setup->rb_info[2].rb_addr_lo =
> lower_32_bits(adev->vcn.inst[1].ring_enc[0].gpu_addr);
> + rb_setup->rb_info[2].rb_addr_hi =
> upper_32_bits(adev->vcn.inst[1].ring_enc[0].gpu_addr);
> + rb_setup->rb_info[2].rb_size = adev-
> >vcn.inst[1].ring_enc[0].ring_size / 4;
> + }
> + fw_shared->decouple.is_enabled = 1;
> + fw_shared->present_flag_0 |=
> cpu_to_le32(AMDGPU_VCN_VF_RB_DECOUPLE_FLAG);
> + } else {
> + rb_setup->rb_addr_lo = lower_32_bits(rb_enc_addr);
> + rb_setup->rb_addr_hi =
> upper_32_bits(rb_enc_addr);
> + rb_setup->rb_size = ring_enc->ring_size / 4;
> + }
> +
>
> MMSCH_V4_0_INSERT_DIRECT_WT(SOC15_REG_OFFSET(VCN, i,
> regUVD_LMI_VCPU_NC0_64BIT_BAR_LOW),
> lower_32_bits(adev-
> >vcn.inst[i].fw_shared.gpu_addr));
> @@ -1810,6 +1844,7 @@ static struct amdgpu_ring_funcs
> vcn_v4_0_unified_ring_vm_funcs = {
> .type = AMDGPU_RING_TYPE_VCN_ENC,
> .align_mask = 0x3f,
> .nop = VCN_ENC_CMD_NO_OP,
> + .extra_dw = sizeof(struct amdgpu_vcn_rb_metadata),
> .get_rptr = vcn_v4_0_unified_ring_get_rptr,
> .get_wptr = vcn_v4_0_unified_ring_get_wptr,
> .set_wptr = vcn_v4_0_unified_ring_set_wptr, @@ -2023,16 +2058,20
> @@ static int vcn_v4_0_process_interrupt(struct amdgpu_device *adev,
> struct amdgpu_ {
> uint32_t ip_instance;
>
> - switch (entry->client_id) {
> - case SOC15_IH_CLIENTID_VCN:
> - ip_instance = 0;
> - break;
> - case SOC15_IH_CLIENTID_VCN1:
> - ip_instance = 1;
> - break;
> - default:
> - DRM_ERROR("Unhandled client id: %d\n", entry->client_id);
> - return 0;
> + if (amdgpu_sriov_is_vcn_rb_decouple(adev)) {
> + ip_instance = entry->ring_id;
> + } else {
> + switch (entry->client_id) {
> + case SOC15_IH_CLIENTID_VCN:
> + ip_instance = 0;
> + break;
> + case SOC15_IH_CLIENTID_VCN1:
> + ip_instance = 1;
> + break;
> + default:
> + DRM_ERROR("Unhandled client id: %d\n", entry-
> >client_id);
> + return 0;
> + }
> }
>
> DRM_DEBUG("IH: VCN TRAP\n");
> --
> 2.34.1
