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drm/amdgpu: Add init levels

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Add init levels to define the level to which device needs to be
initialized.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Tested-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2024-08-19 12:27:48 +05:30 • committed by Alex Deucher
parent 8a84d2a472
commit 14f2fe34f5
2 changed files with 88 additions and 0 deletions
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22
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -823,6 +823,24 @@ struct amdgpu_mqd {
struct amdgpu_mqd_prop *p);
};
/*
* Custom Init levels could be defined for different situations where a full
* initialization of all hardware blocks are not expected. Sample cases are
* custom init sequences after resume after S0i3/S3, reset on initialization,
* partial reset of blocks etc. Presently, this defines only two levels. Levels
* are described in corresponding struct definitions - amdgpu_init_default,
* amdgpu_init_minimal_xgmi.
*/
enum amdgpu_init_lvl_id {
AMDGPU_INIT_LEVEL_DEFAULT,
AMDGPU_INIT_LEVEL_MINIMAL_XGMI,
};
struct amdgpu_init_level {
enum amdgpu_init_lvl_id level;
uint32_t hwini_ip_block_mask;
};
#define AMDGPU_RESET_MAGIC_NUM 64
#define AMDGPU_MAX_DF_PERFMONS 4
struct amdgpu_reset_domain;
@ -1168,6 +1186,8 @@ struct amdgpu_device {
bool enforce_isolation[MAX_XCP];
/* Added this mutex for cleaner shader isolation between GFX and compute processes */
struct mutex enforce_isolation_mutex;
struct amdgpu_init_level *init_lvl;
};
static inline uint32_t amdgpu_ip_version(const struct amdgpu_device *adev,
@ -1621,4 +1641,6 @@ extern const struct attribute_group amdgpu_vram_mgr_attr_group;
extern const struct attribute_group amdgpu_gtt_mgr_attr_group;
extern const struct attribute_group amdgpu_flash_attr_group;
void amdgpu_set_init_level(struct amdgpu_device *adev,
enum amdgpu_init_lvl_id lvl);
#endif

66
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View file

@ -144,6 +144,50 @@ const char *amdgpu_asic_name[] = {
"LAST",
};
#define AMDGPU_IP_BLK_MASK_ALL GENMASK(AMDGPU_MAX_IP_NUM - 1, 0)
/*
* Default init level where all blocks are expected to be initialized. This is
* the level of initialization expected by default and also after a full reset
* of the device.
*/
struct amdgpu_init_level amdgpu_init_default = {
.level = AMDGPU_INIT_LEVEL_DEFAULT,
.hwini_ip_block_mask = AMDGPU_IP_BLK_MASK_ALL,
};
/*
* Minimal blocks needed to be initialized before a XGMI hive can be reset. This
* is used for cases like reset on initialization where the entire hive needs to
* be reset before first use.
*/
struct amdgpu_init_level amdgpu_init_minimal_xgmi = {
.level = AMDGPU_INIT_LEVEL_MINIMAL_XGMI,
.hwini_ip_block_mask =
BIT(AMD_IP_BLOCK_TYPE_GMC) | BIT(AMD_IP_BLOCK_TYPE_SMC) |
BIT(AMD_IP_BLOCK_TYPE_COMMON) | BIT(AMD_IP_BLOCK_TYPE_IH)
};
static inline bool amdgpu_ip_member_of_hwini(struct amdgpu_device *adev,
enum amd_ip_block_type block)
{
return (adev->init_lvl->hwini_ip_block_mask & (1U << block)) != 0;
}
void amdgpu_set_init_level(struct amdgpu_device *adev,
enum amdgpu_init_lvl_id lvl)
{
switch (lvl) {
case AMDGPU_INIT_LEVEL_MINIMAL_XGMI:
adev->init_lvl = &amdgpu_init_minimal_xgmi;
break;
case AMDGPU_INIT_LEVEL_DEFAULT:
fallthrough;
default:
adev->init_lvl = &amdgpu_init_default;
break;
}
}
static inline void amdgpu_device_stop_pending_resets(struct amdgpu_device *adev);
/**
@ -2655,6 +2699,9 @@ static int amdgpu_device_ip_hw_init_phase1(struct amdgpu_device *adev)
continue;
if (adev->ip_blocks[i].status.hw)
continue;
if (!amdgpu_ip_member_of_hwini(
adev, adev->ip_blocks[i].version->type))
continue;
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON ||
(amdgpu_sriov_vf(adev) && (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP)) ||
adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH) {
@ -2680,6 +2727,9 @@ static int amdgpu_device_ip_hw_init_phase2(struct amdgpu_device *adev)
continue;
if (adev->ip_blocks[i].status.hw)
continue;
if (!amdgpu_ip_member_of_hwini(
adev, adev->ip_blocks[i].version->type))
continue;
r = adev->ip_blocks[i].version->funcs->hw_init(adev);
if (r) {
DRM_ERROR("hw_init of IP block <%s> failed %d\n",
@ -2703,6 +2753,10 @@ static int amdgpu_device_fw_loading(struct amdgpu_device *adev)
if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_PSP)
continue;
if (!amdgpu_ip_member_of_hwini(adev,
AMD_IP_BLOCK_TYPE_PSP))
break;
if (!adev->ip_blocks[i].status.sw)
continue;
@ -2825,6 +2879,10 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
}
adev->ip_blocks[i].status.sw = true;
if (!amdgpu_ip_member_of_hwini(
adev, adev->ip_blocks[i].version->type))
continue;
if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON) {
/* need to do common hw init early so everything is set up for gmc */
r = adev->ip_blocks[i].version->funcs->hw_init((void *)adev);
@ -4215,6 +4273,12 @@ int amdgpu_device_init(struct amdgpu_device *adev,
amdgpu_device_set_mcbp(adev);
/*
* By default, use default mode where all blocks are expected to be
* initialized. At present a 'swinit' of blocks is required to be
* completed before the need for a different level is detected.
*/
amdgpu_set_init_level(adev, AMDGPU_INIT_LEVEL_DEFAULT);
/* early init functions */
r = amdgpu_device_ip_early_init(adev);
if (r)
@ -5414,6 +5478,8 @@ int amdgpu_do_asic_reset(struct list_head *device_list_handle,
}
list_for_each_entry(tmp_adev, device_list_handle, reset_list) {
/* After reset, it's default init level */
amdgpu_set_init_level(tmp_adev, AMDGPU_INIT_LEVEL_DEFAULT);
if (need_full_reset) {
/* post card */
amdgpu_ras_set_fed(tmp_adev, false);