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path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c151
1 files changed, 146 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index c0f9a651dc06..d33cb344be69 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -27,7 +27,7 @@
#include <linux/pci.h>
#include <linux/uaccess.h>
#include <linux/pm_runtime.h>
-
+#include <linux/poll.h>
#include <drm/drm_debugfs.h>
#include "amdgpu.h"
@@ -74,8 +74,82 @@ int amdgpu_debugfs_add_files(struct amdgpu_device *adev,
return 0;
}
+int amdgpu_debugfs_wait_dump(struct amdgpu_device *adev)
+{
+#if defined(CONFIG_DEBUG_FS)
+ unsigned long timeout = 600 * HZ;
+ int ret;
+
+ wake_up_interruptible(&adev->autodump.gpu_hang);
+
+ ret = wait_for_completion_interruptible_timeout(&adev->autodump.dumping, timeout);
+ if (ret == 0) {
+ pr_err("autodump: timeout, move on to gpu recovery\n");
+ return -ETIMEDOUT;
+ }
+#endif
+ return 0;
+}
+
#if defined(CONFIG_DEBUG_FS)
+static int amdgpu_debugfs_autodump_open(struct inode *inode, struct file *file)
+{
+ struct amdgpu_device *adev = inode->i_private;
+ int ret;
+
+ file->private_data = adev;
+
+ mutex_lock(&adev->lock_reset);
+ if (adev->autodump.dumping.done) {
+ reinit_completion(&adev->autodump.dumping);
+ ret = 0;
+ } else {
+ ret = -EBUSY;
+ }
+ mutex_unlock(&adev->lock_reset);
+
+ return ret;
+}
+
+static int amdgpu_debugfs_autodump_release(struct inode *inode, struct file *file)
+{
+ struct amdgpu_device *adev = file->private_data;
+
+ complete_all(&adev->autodump.dumping);
+ return 0;
+}
+
+static unsigned int amdgpu_debugfs_autodump_poll(struct file *file, struct poll_table_struct *poll_table)
+{
+ struct amdgpu_device *adev = file->private_data;
+
+ poll_wait(file, &adev->autodump.gpu_hang, poll_table);
+
+ if (adev->in_gpu_reset)
+ return POLLIN | POLLRDNORM | POLLWRNORM;
+
+ return 0;
+}
+
+static const struct file_operations autodump_debug_fops = {
+ .owner = THIS_MODULE,
+ .open = amdgpu_debugfs_autodump_open,
+ .poll = amdgpu_debugfs_autodump_poll,
+ .release = amdgpu_debugfs_autodump_release,
+};
+
+static void amdgpu_debugfs_autodump_init(struct amdgpu_device *adev)
+{
+ init_completion(&adev->autodump.dumping);
+ complete_all(&adev->autodump.dumping);
+ init_waitqueue_head(&adev->autodump.gpu_hang);
+
+ debugfs_create_file("amdgpu_autodump", 0600,
+ adev->ddev->primary->debugfs_root,
+ adev, &autodump_debug_fops);
+}
+
/**
* amdgpu_debugfs_process_reg_op - Handle MMIO register reads/writes
*
@@ -152,11 +226,16 @@ static int amdgpu_debugfs_process_reg_op(bool read, struct file *f,
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
if (use_bank) {
if ((sh_bank != 0xFFFFFFFF && sh_bank >= adev->gfx.config.max_sh_per_se) ||
(se_bank != 0xFFFFFFFF && se_bank >= adev->gfx.config.max_shader_engines)) {
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return -EINVAL;
}
mutex_lock(&adev->grbm_idx_mutex);
@@ -207,6 +286,7 @@ end:
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -255,6 +335,10 @@ static ssize_t amdgpu_debugfs_regs_pcie_read(struct file *f, char __user *buf,
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
while (size) {
uint32_t value;
@@ -263,6 +347,7 @@ static ssize_t amdgpu_debugfs_regs_pcie_read(struct file *f, char __user *buf,
if (r) {
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
}
@@ -275,6 +360,7 @@ static ssize_t amdgpu_debugfs_regs_pcie_read(struct file *f, char __user *buf,
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -304,6 +390,10 @@ static ssize_t amdgpu_debugfs_regs_pcie_write(struct file *f, const char __user
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
while (size) {
uint32_t value;
@@ -311,6 +401,7 @@ static ssize_t amdgpu_debugfs_regs_pcie_write(struct file *f, const char __user
if (r) {
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
}
@@ -325,6 +416,7 @@ static ssize_t amdgpu_debugfs_regs_pcie_write(struct file *f, const char __user
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -354,6 +446,10 @@ static ssize_t amdgpu_debugfs_regs_didt_read(struct file *f, char __user *buf,
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
while (size) {
uint32_t value;
@@ -362,6 +458,7 @@ static ssize_t amdgpu_debugfs_regs_didt_read(struct file *f, char __user *buf,
if (r) {
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
}
@@ -374,6 +471,7 @@ static ssize_t amdgpu_debugfs_regs_didt_read(struct file *f, char __user *buf,
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -403,6 +501,10 @@ static ssize_t amdgpu_debugfs_regs_didt_write(struct file *f, const char __user
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
while (size) {
uint32_t value;
@@ -410,6 +512,7 @@ static ssize_t amdgpu_debugfs_regs_didt_write(struct file *f, const char __user
if (r) {
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
}
@@ -424,6 +527,7 @@ static ssize_t amdgpu_debugfs_regs_didt_write(struct file *f, const char __user
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -453,6 +557,10 @@ static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
while (size) {
uint32_t value;
@@ -461,6 +569,7 @@ static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
if (r) {
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
}
@@ -473,6 +582,7 @@ static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -502,6 +612,10 @@ static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
while (size) {
uint32_t value;
@@ -509,6 +623,7 @@ static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *
if (r) {
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
}
@@ -523,6 +638,7 @@ static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -651,16 +767,24 @@ static ssize_t amdgpu_debugfs_sensor_read(struct file *f, char __user *buf,
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
r = amdgpu_dpm_read_sensor(adev, idx, &values[0], &valuesize);
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
- if (r)
+ if (r) {
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
+ }
- if (size > valuesize)
+ if (size > valuesize) {
+ amdgpu_virt_disable_access_debugfs(adev);
return -EINVAL;
+ }
outsize = 0;
x = 0;
@@ -673,6 +797,7 @@ static ssize_t amdgpu_debugfs_sensor_read(struct file *f, char __user *buf,
}
}
+ amdgpu_virt_disable_access_debugfs(adev);
return !r ? outsize : r;
}
@@ -720,6 +845,10 @@ static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf,
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
/* switch to the specific se/sh/cu */
mutex_lock(&adev->grbm_idx_mutex);
amdgpu_gfx_select_se_sh(adev, se, sh, cu);
@@ -734,16 +863,20 @@ static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf,
pm_runtime_mark_last_busy(adev->ddev->dev);
pm_runtime_put_autosuspend(adev->ddev->dev);
- if (!x)
+ if (!x) {
+ amdgpu_virt_disable_access_debugfs(adev);
return -EINVAL;
+ }
while (size && (offset < x * 4)) {
uint32_t value;
value = data[offset >> 2];
r = put_user(value, (uint32_t *)buf);
- if (r)
+ if (r) {
+ amdgpu_virt_disable_access_debugfs(adev);
return r;
+ }
result += 4;
buf += 4;
@@ -751,6 +884,7 @@ static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf,
size -= 4;
}
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -805,6 +939,10 @@ static ssize_t amdgpu_debugfs_gpr_read(struct file *f, char __user *buf,
if (r < 0)
return r;
+ r = amdgpu_virt_enable_access_debugfs(adev);
+ if (r < 0)
+ return r;
+
/* switch to the specific se/sh/cu */
mutex_lock(&adev->grbm_idx_mutex);
amdgpu_gfx_select_se_sh(adev, se, sh, cu);
@@ -840,6 +978,7 @@ static ssize_t amdgpu_debugfs_gpr_read(struct file *f, char __user *buf,
err:
kfree(data);
+ amdgpu_virt_disable_access_debugfs(adev);
return result;
}
@@ -1369,6 +1508,8 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
amdgpu_ras_debugfs_create_all(adev);
+ amdgpu_debugfs_autodump_init(adev);
+
return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
ARRAY_SIZE(amdgpu_debugfs_list));
}