nagai/kernel
3
0
Fork 0
forked from mirrors/linux
Code Pull requests Activity

drm/amdgpu: fix vf error handling

Browse source 
The error handling for virtual functions assumed a single
vf per VM and didn't properly account for bare metal.  Make
the error arrays per device and add locking.

Reviewed-by: Gavin Wan <gavin.wan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-09-28 09:47:32 -04:00
parent 6f87a89570
commit e23b74aab5
4 changed files with 54 additions and 41 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

23
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View file

@ -2040,6 +2040,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
mutex_init(&adev->srbm_mutex);
mutex_init(&adev->grbm_idx_mutex);
mutex_init(&adev->mn_lock);
mutex_init(&adev->virt.vf_errors.lock);
hash_init(adev->mn_hash);
amdgpu_check_arguments(adev);
@ -2125,7 +2126,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_atombios_init(adev);
if (r) {
dev_err(adev->dev, "amdgpu_atombios_init failed\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
goto failed;
}
@ -2136,7 +2137,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
if (amdgpu_vpost_needed(adev)) {
if (!adev->bios) {
dev_err(adev->dev, "no vBIOS found\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_NO_VBIOS, 0, 0);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_NO_VBIOS, 0, 0);
r = -EINVAL;
goto failed;
}
@ -2144,7 +2145,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_atom_asic_init(adev->mode_info.atom_context);
if (r) {
dev_err(adev->dev, "gpu post error!\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_GPU_POST_ERROR, 0, 0);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_GPU_POST_ERROR, 0, 0);
goto failed;
}
} else {
@ -2156,7 +2157,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_atomfirmware_get_clock_info(adev);
if (r) {
dev_err(adev->dev, "amdgpu_atomfirmware_get_clock_info failed\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
goto failed;
}
} else {
@ -2164,7 +2165,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_atombios_get_clock_info(adev);
if (r) {
dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
goto failed;
}
/* init i2c buses */
@ -2175,7 +2176,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_fence_driver_init(adev);
if (r) {
dev_err(adev->dev, "amdgpu_fence_driver_init failed\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_FENCE_INIT_FAIL, 0, 0);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_FENCE_INIT_FAIL, 0, 0);
goto failed;
}
@ -2185,7 +2186,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_init(adev);
if (r) {
dev_err(adev->dev, "amdgpu_init failed\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_AMDGPU_INIT_FAIL, 0, 0);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_INIT_FAIL, 0, 0);
amdgpu_fini(adev);
goto failed;
}
@ -2205,7 +2206,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_ib_pool_init(adev);
if (r) {
dev_err(adev->dev, "IB initialization failed (%d).\n", r);
amdgpu_vf_error_put(AMDGIM_ERROR_VF_IB_INIT_FAIL, 0, r);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_IB_INIT_FAIL, 0, r);
goto failed;
}
@ -2254,7 +2255,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
r = amdgpu_late_init(adev);
if (r) {
dev_err(adev->dev, "amdgpu_late_init failed\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_AMDGPU_LATE_INIT_FAIL, 0, r);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_LATE_INIT_FAIL, 0, r);
goto failed;
}
@ -2936,7 +2937,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
}
} else {
dev_err(adev->dev, "asic resume failed (%d).\n", r);
amdgpu_vf_error_put(AMDGIM_ERROR_VF_ASIC_RESUME_FAIL, 0, r);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ASIC_RESUME_FAIL, 0, r);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
if (adev->rings[i] && adev->rings[i]->sched.thread) {
kthread_unpark(adev->rings[i]->sched.thread);
@ -2950,7 +2951,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
if (r) {
/* bad news, how to tell it to userspace ? */
dev_info(adev->dev, "GPU reset failed\n");
amdgpu_vf_error_put(AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
}
else {
dev_info(adev->dev, "GPU reset successed!\n");

54
drivers/gpu/drm/amd/amdgpu/amdgpu_vf_error.c
View file

@ -25,30 +25,21 @@
#include "amdgpu_vf_error.h"
#include "mxgpu_ai.h"
#define AMDGPU_VF_ERROR_ENTRY_SIZE 16
/* struct error_entry - amdgpu VF error information. */
struct amdgpu_vf_error_buffer {
int read_count;
int write_count;
uint16_t code[AMDGPU_VF_ERROR_ENTRY_SIZE];
uint16_t flags[AMDGPU_VF_ERROR_ENTRY_SIZE];
uint64_t data[AMDGPU_VF_ERROR_ENTRY_SIZE];
};
struct amdgpu_vf_error_buffer admgpu_vf_errors;
void amdgpu_vf_error_put(uint16_t sub_error_code, uint16_t error_flags, uint64_t error_data)
void amdgpu_vf_error_put(struct amdgpu_device *adev,
uint16_t sub_error_code,
uint16_t error_flags,
uint64_t error_data)
{
int index;
uint16_t error_code = AMDGIM_ERROR_CODE(AMDGIM_ERROR_CATEGORY_VF, sub_error_code);
index = admgpu_vf_errors.write_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
admgpu_vf_errors.code [index] = error_code;
admgpu_vf_errors.flags [index] = error_flags;
admgpu_vf_errors.data [index] = error_data;
admgpu_vf_errors.write_count ++;
mutex_lock(&adev->virt.vf_errors.lock);
index = adev->virt.vf_errors.write_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
adev->virt.vf_errors.code [index] = error_code;
adev->virt.vf_errors.flags [index] = error_flags;
adev->virt.vf_errors.data [index] = error_data;
adev->virt.vf_errors.write_count ++;
mutex_unlock(&adev->virt.vf_errors.lock);
}
@ -58,7 +49,8 @@ void amdgpu_vf_error_trans_all(struct amdgpu_device *adev)
u32 data1, data2, data3;
int index;
if ((NULL == adev) || (!amdgpu_sriov_vf(adev)) || (!adev->virt.ops) || (!adev->virt.ops->trans_msg)) {
if ((NULL == adev) || (!amdgpu_sriov_vf(adev)) ||
(!adev->virt.ops) || (!adev->virt.ops->trans_msg)) {
return;
}
/*
@ -68,18 +60,22 @@ void amdgpu_vf_error_trans_all(struct amdgpu_device *adev)
return;
}
*/
mutex_lock(&adev->virt.vf_errors.lock);
/* The errors are overlay of array, correct read_count as full. */
if (admgpu_vf_errors.write_count - admgpu_vf_errors.read_count > AMDGPU_VF_ERROR_ENTRY_SIZE) {
admgpu_vf_errors.read_count = admgpu_vf_errors.write_count - AMDGPU_VF_ERROR_ENTRY_SIZE;
if (adev->virt.vf_errors.write_count - adev->virt.vf_errors.read_count > AMDGPU_VF_ERROR_ENTRY_SIZE) {
adev->virt.vf_errors.read_count = adev->virt.vf_errors.write_count - AMDGPU_VF_ERROR_ENTRY_SIZE;
}
while (admgpu_vf_errors.read_count < admgpu_vf_errors.write_count) {
index =admgpu_vf_errors.read_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
data1 = AMDGIM_ERROR_CODE_FLAGS_TO_MAILBOX (admgpu_vf_errors.code[index], admgpu_vf_errors.flags[index]);
data2 = admgpu_vf_errors.data[index] & 0xFFFFFFFF;
data3 = (admgpu_vf_errors.data[index] >> 32) & 0xFFFFFFFF;
while (adev->virt.vf_errors.read_count < adev->virt.vf_errors.write_count) {
index =adev->virt.vf_errors.read_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
data1 = AMDGIM_ERROR_CODE_FLAGS_TO_MAILBOX(adev->virt.vf_errors.code[index],
adev->virt.vf_errors.flags[index]);
data2 = adev->virt.vf_errors.data[index] & 0xFFFFFFFF;
data3 = (adev->virt.vf_errors.data[index] >> 32) & 0xFFFFFFFF;
adev->virt.ops->trans_msg(adev, IDH_LOG_VF_ERROR, data1, data2, data3);
admgpu_vf_errors.read_count ++;
adev->virt.vf_errors.read_count ++;
}
mutex_unlock(&adev->virt.vf_errors.lock);
}

5
drivers/gpu/drm/amd/amdgpu/amdgpu_vf_error.h
View file

@ -56,7 +56,10 @@ enum AMDGIM_ERROR_CATEGORY {
AMDGIM_ERROR_CATEGORY_MAX
};
void amdgpu_vf_error_put(uint16_t sub_error_code, uint16_t error_flags, uint64_t error_data);
void amdgpu_vf_error_put(struct amdgpu_device *adev,
uint16_t sub_error_code,
uint16_t error_flags,
uint64_t error_data);
void amdgpu_vf_error_trans_all (struct amdgpu_device *adev);
#endif /* __VF_ERROR_H__ */

13
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
View file

@ -36,6 +36,18 @@ struct amdgpu_mm_table {
uint64_t gpu_addr;
};
#define AMDGPU_VF_ERROR_ENTRY_SIZE 16
/* struct error_entry - amdgpu VF error information. */
struct amdgpu_vf_error_buffer {
struct mutex lock;
int read_count;
int write_count;
uint16_t code[AMDGPU_VF_ERROR_ENTRY_SIZE];
uint16_t flags[AMDGPU_VF_ERROR_ENTRY_SIZE];
uint64_t data[AMDGPU_VF_ERROR_ENTRY_SIZE];
};
/**
* struct amdgpu_virt_ops - amdgpu device virt operations
*/
@ -59,6 +71,7 @@ struct amdgpu_virt {
struct work_struct flr_work;
struct amdgpu_mm_table mm_table;
const struct amdgpu_virt_ops *ops;
struct amdgpu_vf_error_buffer vf_errors;
};
#define AMDGPU_CSA_SIZE (8 * 1024)