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drm/amdgpu: page retire over debugfs mechanism

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added support in RAS debugfs to add bad page for isolated page retirement testing

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
John Clements 2021-04-09 17:25:29 +08:00 committed by Alex Deucher
parent 25315ebfae
commit cbb8f989d5
1 changed files with 67 additions and 0 deletions
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67
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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@ -99,6 +99,49 @@ static bool amdgpu_ras_get_error_query_ready(struct amdgpu_device *adev)
return false;
}
static int amdgpu_reserve_page_direct(struct amdgpu_device *adev, uint64_t address)
{
struct ras_err_data err_data = {0, 0, 0, NULL};
struct eeprom_table_record err_rec;
if ((address >= adev->gmc.mc_vram_size) ||
(address >= RAS_UMC_INJECT_ADDR_LIMIT)) {
dev_warn(adev->dev,
"RAS WARN: input address 0x%llx is invalid.\n",
address);
return -EINVAL;
}
if (amdgpu_ras_check_bad_page(adev, address)) {
dev_warn(adev->dev,
"RAS WARN: 0x%llx has been marked as bad page!\n",
address);
return 0;
}
memset(&err_rec, 0x0, sizeof(struct eeprom_table_record));
err_rec.address = address;
err_rec.retired_page = address >> AMDGPU_GPU_PAGE_SHIFT;
err_rec.ts = (uint64_t)ktime_get_real_seconds();
err_rec.err_type = AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE;
err_data.err_addr = &err_rec;
err_data.err_addr_cnt = 1;
if (amdgpu_bad_page_threshold != 0) {
amdgpu_ras_add_bad_pages(adev, err_data.err_addr,
err_data.err_addr_cnt);
amdgpu_ras_save_bad_pages(adev);
}
dev_warn(adev->dev, "WARNING: THIS IS ONLY FOR TEST PURPOSES AND WILL CORRUPT RAS EEPROM\n");
dev_warn(adev->dev, "Clear EEPROM:\n");
dev_warn(adev->dev, " echo 1 > /sys/kernel/debug/dri/0/ras/ras_eeprom_reset\n");
return 0;
}
static ssize_t amdgpu_ras_debugfs_read(struct file *f, char __user *buf,
size_t size, loff_t *pos)
{
@ -178,11 +221,25 @@ static int amdgpu_ras_debugfs_ctrl_parse_data(struct file *f,
op = 1;
else if (sscanf(str, "inject %32s %8s", block_name, err) == 2)
op = 2;
else if (sscanf(str, "retire_page") == 0)
op = 3;
else if (str[0] && str[1] && str[2] && str[3])
/* ascii string, but commands are not matched. */
return -EINVAL;
if (op != -1) {
if (op == 3) {
if (sscanf(str, "%*s %llu", &address) != 1)
if (sscanf(str, "%*s 0x%llx", &address) != 1)
return -EINVAL;
data->op = op;
data->inject.address = address;
return 0;
}
if (amdgpu_ras_find_block_id_by_name(block_name, &block_id))
return -EINVAL;
@ -310,6 +367,16 @@ static ssize_t amdgpu_ras_debugfs_ctrl_write(struct file *f, const char __user *
if (ret)
return -EINVAL;
if (data.op == 3)
{
ret = amdgpu_reserve_page_direct(adev, data.inject.address);
if (ret)
return size;
else
return ret;
}
if (!amdgpu_ras_is_supported(adev, data.head.block))
return -EINVAL;