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drm/amdgpu: prepare for logging ecc errors

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Prepare for logging ecc errors.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
YiPeng Chai 2024-04-22 17:37:36 +08:00 committed by Alex Deucher
parent 98b5bc878d
commit f493dd64ee
2 changed files with 55 additions and 0 deletions
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32
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
View File

@ -2737,6 +2737,35 @@ static int amdgpu_ras_get_poison_req(struct amdgpu_device *adev,
}
#endif
static void amdgpu_ras_ecc_log_init(struct ras_ecc_log_info *ecc_log)
{
mutex_init(&ecc_log->lock);
/* Set any value as siphash key */
memset(&ecc_log->ecc_key, 0xad, sizeof(ecc_log->ecc_key));
INIT_RADIX_TREE(&ecc_log->de_page_tree, GFP_KERNEL);
ecc_log->de_updated = false;
}
static void amdgpu_ras_ecc_log_fini(struct ras_ecc_log_info *ecc_log)
{
struct radix_tree_iter iter;
void __rcu **slot;
struct ras_ecc_err *ecc_err;
mutex_lock(&ecc_log->lock);
radix_tree_for_each_slot(slot, &ecc_log->de_page_tree, &iter, 0) {
ecc_err = radix_tree_deref_slot(slot);
kfree(ecc_err->err_pages.pfn);
kfree(ecc_err);
radix_tree_iter_delete(&ecc_log->de_page_tree, &iter, slot);
}
mutex_unlock(&ecc_log->lock);
mutex_destroy(&ecc_log->lock);
ecc_log->de_updated = false;
}
static int amdgpu_ras_page_retirement_thread(void *param)
{
struct amdgpu_device *adev = (struct amdgpu_device *)param;
@ -2838,6 +2867,7 @@ int amdgpu_ras_recovery_init(struct amdgpu_device *adev)
dev_warn(adev->dev, "Failed to create umc_page_retirement thread!!!\n");
}
amdgpu_ras_ecc_log_init(&con->umc_ecc_log);
#ifdef CONFIG_X86_MCE_AMD
if ((adev->asic_type == CHIP_ALDEBARAN) &&
(adev->gmc.xgmi.connected_to_cpu))
@ -2882,6 +2912,8 @@ static int amdgpu_ras_recovery_fini(struct amdgpu_device *adev)
cancel_work_sync(&con->recovery_work);
amdgpu_ras_ecc_log_fini(&con->umc_ecc_log);
mutex_lock(&con->recovery_lock);
con->eh_data = NULL;
kfree(data->bps);

23
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
View File

@ -27,6 +27,8 @@
#include <linux/debugfs.h>
#include <linux/list.h>
#include <linux/kfifo.h>
#include <linux/radix-tree.h>
#include <linux/siphash.h>
#include "ta_ras_if.h"
#include "amdgpu_ras_eeprom.h"
#include "amdgpu_smuio.h"
@ -454,6 +456,26 @@ struct ras_poison_msg {
void *data;
};
struct ras_err_pages {
uint32_t count;
uint64_t *pfn;
};
struct ras_ecc_err {
u64 hash_index;
uint64_t status;
uint64_t ipid;
uint64_t addr;
struct ras_err_pages err_pages;
};
struct ras_ecc_log_info {
struct mutex lock;
siphash_key_t ecc_key;
struct radix_tree_root de_page_tree;
bool de_updated;
};
struct amdgpu_ras {
/* ras infrastructure */
/* for ras itself. */
@ -514,6 +536,7 @@ struct amdgpu_ras {
atomic_t page_retirement_req_cnt;
struct mutex page_rsv_lock;
DECLARE_KFIFO(poison_fifo, struct ras_poison_msg, 128);
struct ras_ecc_log_info umc_ecc_log;
/* Fatal error detected flag */
atomic_t fed;