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drm/amdgpu: add new member hw_supported

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Currently, it is not clear how ras is supported. Both software and
hardware can set the supported. That is confusing.

Fix it by adding new member hw_supported.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
xinhui pan 2019-03-11 14:12:40 +08:00 committed by Alex Deucher
parent 2b9505e353
commit 5caf466a6e
2 changed files with 33 additions and 12 deletions
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42
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
View File

@ -469,7 +469,9 @@ static struct ras_manager *amdgpu_ras_find_obj(struct amdgpu_device *adev,
static int amdgpu_ras_is_feature_allowed(struct amdgpu_device *adev,
struct ras_common_if *head)
{
return amdgpu_ras_enable && (amdgpu_ras_mask & BIT(head->block));
struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
return con->hw_supported & BIT(head->block);
}
static int amdgpu_ras_is_feature_enabled(struct amdgpu_device *adev,
@ -490,6 +492,12 @@ static int __amdgpu_ras_feature_enable(struct amdgpu_device *adev,
struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
struct ras_manager *obj = amdgpu_ras_find_obj(adev, head);
/* If hardware does not support ras, then do not create obj.
* But if hardware support ras, we can create the obj.
* Ras framework checks con->hw_supported to see if it need do
* corresponding initialization.
* IP checks con->support to see if it need disable ras.
*/
if (!amdgpu_ras_is_feature_allowed(adev, head))
return 0;
if (!(!!enable ^ !!amdgpu_ras_is_feature_enabled(adev, head)))
@ -1334,27 +1342,36 @@ static int amdgpu_ras_recovery_fini(struct amdgpu_device *adev)
}
/* recovery end */
static uint32_t amdgpu_ras_check_supported(struct amdgpu_device *adev)
/*
* check hardware's ras ability which will be saved in hw_supported.
* if hardware does not support ras, we can skip some ras initializtion and
* forbid some ras operations from IP.
* if software itself, say boot parameter, limit the ras ability. We still
* need allow IP do some limited operations, like disable. In such case,
* we have to initialize ras as normal. but need check if operation is
* allowed or not in each function.
*/
static void amdgpu_ras_check_supported(struct amdgpu_device *adev,
uint32_t *hw_supported, uint32_t *supported)
{
uint32_t supported = 0;
*hw_supported = 0;
*supported = 0;
if (amdgpu_ras_enable == 0 ||
amdgpu_sriov_vf(adev) ||
if (amdgpu_sriov_vf(adev) ||
adev->asic_type != CHIP_VEGA20)
return 0;
return;
if (amdgpu_atomfirmware_mem_ecc_supported(adev) ||
amdgpu_atomfirmware_sram_ecc_supported(adev)) {
supported = AMDGPU_RAS_BLOCK_MASK;
}
amdgpu_atomfirmware_sram_ecc_supported(adev))
*hw_supported = AMDGPU_RAS_BLOCK_MASK;
return supported & amdgpu_ras_mask;
*supported = amdgpu_ras_enable == 0 ?
0 : *hw_supported & amdgpu_ras_mask;
}
int amdgpu_ras_init(struct amdgpu_device *adev)
{
struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
uint32_t supported = amdgpu_ras_check_supported(adev);
if (con)
return 0;
@ -1369,7 +1386,8 @@ int amdgpu_ras_init(struct amdgpu_device *adev)
amdgpu_ras_set_context(adev, con);
con->supported = supported;
amdgpu_ras_check_supported(adev, &con->hw_supported,
&con->supported);
con->features = 0;
INIT_LIST_HEAD(&con->head);

3
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
View File

@ -81,6 +81,9 @@ typedef int (*ras_ih_cb)(struct amdgpu_device *adev,
struct amdgpu_ras {
/* ras infrastructure */
/* for ras itself. */
uint32_t hw_supported;
/* for IP to check its ras ability. */
uint32_t supported;
uint32_t features;
struct list_head head;