From 4051844c6616c0bf33dd16342967ea5b931746ae Mon Sep 17 00:00:00 2001
From: Yang Wang <kevinyang.wang@amd.com>
Date: Wed, 6 Sep 2023 12:37:14 +0800
Subject: drm/amdgpu: add amdgpu mca debug sysfs support
add amdgpu mca debug sysfs support.
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c | 116 ++++++++++++++++++++++++++++++++
1 file changed, 116 insertions(+)
(limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c')
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c
index a27cd57b35e9..5a828c175e3a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c
@@ -212,3 +212,119 @@ int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev, enum amdgpu_mca_err
return -EOPNOTSUPP;
}
+#if defined(CONFIG_DEBUG_FS)
+static int amdgpu_mca_smu_debug_mode_set(void *data, u64 val)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)data;
+ int ret;
+
+ ret = amdgpu_mca_smu_set_debug_mode(adev, val ? true : false);
+ if (ret)
+ return ret;
+
+ dev_info(adev->dev, "amdgpu set smu mca debug mode %s success\n", val ? "on" : "off");
+
+ return 0;
+}
+
+static void mca_dump_entry(struct seq_file *m, struct mca_bank_entry *entry)
+{
+ int i, idx = entry->idx;
+
+ seq_printf(m, "mca entry[%d].type: %s\n", idx, entry->type == AMDGPU_MCA_ERROR_TYPE_UE ? "UE" : "CE");
+ seq_printf(m, "mca entry[%d].ip: %d\n", idx, entry->ip);
+ seq_printf(m, "mca entry[%d].info: socketid:%d aid:%d hwid:0x%03x mcatype:0x%04x\n",
+ idx, entry->info.socket_id, entry->info.aid, entry->info.hwid, entry->info.mcatype);
+
+ for (i = 0; i < ARRAY_SIZE(entry->regs); i++)
+ seq_printf(m, "mca entry[%d].regs[%d]: 0x%016llx\n", idx, i, entry->regs[i]);
+}
+
+static int mca_dump_show(struct seq_file *m, enum amdgpu_mca_error_type type)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)m->private;
+ struct mca_bank_entry *entry;
+ uint32_t count = 0;
+ int i, ret;
+
+ ret = amdgpu_mca_smu_get_valid_mca_count(adev, type, &count);
+ if (ret)
+ return ret;
+
+ seq_printf(m, "amdgpu smu %s valid mca count: %d\n",
+ type == AMDGPU_MCA_ERROR_TYPE_UE ? "UE" : "CE", count);
+
+ if (!count)
+ return 0;
+
+ entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ for (i = 0; i < count; i++) {
+ memset(entry, 0, sizeof(*entry));
+
+ ret = amdgpu_mca_smu_get_mca_entry(adev, type, i, entry);
+ if (ret)
+ goto err_free_entry;
+
+ mca_dump_entry(m, entry);
+ }
+
+err_free_entry:
+ kfree(entry);
+
+ return ret;
+}
+
+static int mca_dump_ce_show(struct seq_file *m, void *unused)
+{
+ return mca_dump_show(m, AMDGPU_MCA_ERROR_TYPE_CE);
+}
+
+static int mca_dump_ce_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, mca_dump_ce_show, inode->i_private);
+}
+
+static const struct file_operations mca_ce_dump_debug_fops = {
+ .owner = THIS_MODULE,
+ .open = mca_dump_ce_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int mca_dump_ue_show(struct seq_file *m, void *unused)
+{
+ return mca_dump_show(m, AMDGPU_MCA_ERROR_TYPE_UE);
+}
+
+static int mca_dump_ue_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, mca_dump_ue_show, inode->i_private);
+}
+
+static const struct file_operations mca_ue_dump_debug_fops = {
+ .owner = THIS_MODULE,
+ .open = mca_dump_ue_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+DEFINE_DEBUGFS_ATTRIBUTE(mca_debug_mode_fops, NULL, amdgpu_mca_smu_debug_mode_set, "%llu\n");
+#endif
+
+void amdgpu_mca_smu_debugfs_init(struct amdgpu_device *adev, struct dentry *root)
+{
+#if defined(CONFIG_DEBUG_FS)
+ if (!root || adev->ip_versions[MP1_HWIP][0] != IP_VERSION(13, 0, 6))
+ return;
+
+ debugfs_create_file("mca_debug_mode", 0200, root, adev, &mca_debug_mode_fops);
+ debugfs_create_file("mca_ue_dump", 0400, root, adev, &mca_ue_dump_debug_fops);
+ debugfs_create_file("mca_ce_dump", 0400, root, adev, &mca_ce_dump_debug_fops);
+#endif
+}
+
--
cgit v1.2.3