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drm/amdgpu: Introduce SRIOV critical regions v2 during VF init

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1. Introduced amdgpu_virt_init_critical_region during VF init.
     - VFs use init_data_header_offset and init_data_header_size_kb
            transmitted via PF2VF mailbox to fetch the offset of
            critical regions' offsets/sizes in VRAM and save to
            adev->virt.crit_region_offsets and adev->virt.crit_region_sizes_kb.

Signed-off-by: Ellen Pan <yunru.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ellen Pan
2025-10-07 11:00:16 -05:00
committed by Alex Deucher
parent 6d2191d226
commit 07009df649
4 changed files with 220 additions and 0 deletions
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11
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
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@@ -54,6 +54,12 @@
#define AMDGPU_VF2PF_UPDATE_MAX_RETRY_LIMIT 2
/* Signature used to validate the SR-IOV dynamic critical region init data header ("INDA") */
#define AMDGPU_SRIOV_CRIT_DATA_SIGNATURE "INDA"
#define AMDGPU_SRIOV_CRIT_DATA_SIG_LEN 4
#define IS_SRIOV_CRIT_REGN_ENTRY_VALID(hdr, id) ((hdr)->valid_tables & (1 << (id)))
enum amdgpu_sriov_vf_mode {
SRIOV_VF_MODE_BARE_METAL = 0,
SRIOV_VF_MODE_ONE_VF,
@@ -296,6 +302,9 @@ struct amdgpu_virt {
/* dynamic(v2) critical regions */
struct amdgpu_virt_region init_data_header;
struct amdgpu_virt_region crit_regn;
struct amdgpu_virt_region crit_regn_tbl[AMD_SRIOV_MSG_MAX_TABLE_ID];
bool is_dynamic_crit_regn_enabled;
/* vf2pf message */
struct delayed_work vf2pf_work;
@@ -432,6 +441,8 @@ void amdgpu_virt_exchange_data(struct amdgpu_device *adev);
void amdgpu_virt_fini_data_exchange(struct amdgpu_device *adev);
void amdgpu_virt_init(struct amdgpu_device *adev);
int amdgpu_virt_init_critical_region(struct amdgpu_device *adev);
bool amdgpu_virt_can_access_debugfs(struct amdgpu_device *adev);
int amdgpu_virt_enable_access_debugfs(struct amdgpu_device *adev);
void amdgpu_virt_disable_access_debugfs(struct amdgpu_device *adev);