diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3768-drm-amdgpu-Allow-to-reset-to-EERPOM-table.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3768-drm-amdgpu-Allow-to-reset-to-EERPOM-table.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3768-drm-amdgpu-Allow-to-reset-to-EERPOM-table.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3768-drm-amdgpu-Allow-to-reset-to-EERPOM-table.patch new file mode 100644 index 00000000..6ce6f73a --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3768-drm-amdgpu-Allow-to-reset-to-EERPOM-table.patch @@ -0,0 +1,71 @@ +From 2f862e4caa1c7df5ed6a3254a7c925f0dcbf357f Mon Sep 17 00:00:00 2001 +From: Andrey Grodzovsky <andrey.grodzovsky@amd.com> +Date: Mon, 9 Sep 2019 16:00:56 -0400 +Subject: [PATCH 3768/4256] drm/amdgpu: Allow to reset to EERPOM table. + +The table grows quickly during debug/development effort when +multiple RAS errors are injected. Allow to avoid this by setting +table header back to empty if needed. + +v2: Switch to debugfs entry instead of load time parameter. + +Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> +Reviewed-by: Tao Zhou <tao.zhou1@amd.com> +Reviewed-by: Guchun Chen <guchun.chen@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 25 +++++++++++++++++++++++++ + 1 file changed, 25 insertions(+) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +index a9aba06c9452..656e364a473d 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +@@ -303,6 +303,22 @@ static ssize_t amdgpu_ras_debugfs_ctrl_write(struct file *f, const char __user * + return size; + } + ++/** ++ * DOC: AMDGPU RAS debugfs EEPROM table reset interface ++ * ++ * Usage: echo 1 > ../ras/ras_eeprom_reset will reset EEPROM table to 0 entries. ++ */ ++static ssize_t amdgpu_ras_debugfs_eeprom_write(struct file *f, const char __user *buf, ++ size_t size, loff_t *pos) ++{ ++ struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private; ++ int ret; ++ ++ ret = amdgpu_ras_eeprom_reset_table(&adev->psp.ras.ras->eeprom_control); ++ ++ return ret == 1 ? size : -EIO; ++} ++ + static const struct file_operations amdgpu_ras_debugfs_ctrl_ops = { + .owner = THIS_MODULE, + .read = NULL, +@@ -310,6 +326,13 @@ static const struct file_operations amdgpu_ras_debugfs_ctrl_ops = { + .llseek = default_llseek + }; + ++static const struct file_operations amdgpu_ras_debugfs_eeprom_ops = { ++ .owner = THIS_MODULE, ++ .read = NULL, ++ .write = amdgpu_ras_debugfs_eeprom_write, ++ .llseek = default_llseek ++}; ++ + static ssize_t amdgpu_ras_sysfs_read(struct device *dev, + struct device_attribute *attr, char *buf) + { +@@ -951,6 +974,8 @@ static void amdgpu_ras_debugfs_create_ctrl_node(struct amdgpu_device *adev) + con->dir = debugfs_create_dir("ras", minor->debugfs_root); + con->ent = debugfs_create_file("ras_ctrl", S_IWUGO | S_IRUGO, con->dir, + adev, &amdgpu_ras_debugfs_ctrl_ops); ++ con->ent = debugfs_create_file("ras_eeprom_reset", S_IWUGO | S_IRUGO, con->dir, ++ adev, &amdgpu_ras_debugfs_eeprom_ops); + } + + void amdgpu_ras_debugfs_create(struct amdgpu_device *adev, +-- +2.17.1 + |