diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c index 2290ddaf9594..05df4ab3514b 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_debugfs.c @@ -17,6 +17,7 @@ #include "xe_gt_sriov_pf_control.h" #include "xe_gt_sriov_pf_debugfs.h" #include "xe_gt_sriov_pf_helpers.h" +#include "xe_gt_sriov_pf_migration.h" #include "xe_gt_sriov_pf_monitor.h" #include "xe_gt_sriov_pf_policy.h" #include "xe_gt_sriov_pf_service.h" @@ -81,6 +82,11 @@ static const struct drm_info_list pf_info[] = { .data = xe_gt_sriov_pf_config_print_dbs, }, { + "lmem_provisioned", + .show = xe_gt_debugfs_simple_show, + .data = xe_gt_sriov_pf_config_print_lmem, + }, + { "runtime_registers", .show = xe_gt_debugfs_simple_show, .data = xe_gt_sriov_pf_service_print_runtime, @@ -312,6 +318,9 @@ static const struct { { "stop", xe_gt_sriov_pf_control_stop_vf }, { "pause", xe_gt_sriov_pf_control_pause_vf }, { "resume", xe_gt_sriov_pf_control_resume_vf }, +#ifdef CONFIG_DRM_XE_DEBUG_SRIOV + { "restore!", xe_gt_sriov_pf_migration_restore_guc_state }, +#endif }; static ssize_t control_write(struct file *file, const char __user *buf, size_t count, loff_t *pos) @@ -375,6 +384,119 @@ static const struct file_operations control_ops = { .llseek = default_llseek, }; +/* + * /sys/kernel/debug/dri/0/ + * ├── gt0 + * │ ├── vf1 + * │ │ ├── guc_state + */ +static ssize_t guc_state_read(struct file *file, char __user *buf, + size_t count, loff_t *pos) +{ + struct dentry *dent = file_dentry(file); + struct dentry *parent = dent->d_parent; + struct xe_gt *gt = extract_gt(parent); + unsigned int vfid = extract_vfid(parent); + + return xe_gt_sriov_pf_migration_read_guc_state(gt, vfid, buf, count, pos); +} + +static ssize_t guc_state_write(struct file *file, const char __user *buf, + size_t count, loff_t *pos) +{ + struct dentry *dent = file_dentry(file); + struct dentry *parent = dent->d_parent; + struct xe_gt *gt = extract_gt(parent); + unsigned int vfid = extract_vfid(parent); + + if (*pos) + return -EINVAL; + + return xe_gt_sriov_pf_migration_write_guc_state(gt, vfid, buf, count); +} + +static const struct file_operations guc_state_ops = { + .owner = THIS_MODULE, + .read = guc_state_read, + .write = guc_state_write, + .llseek = default_llseek, +}; + +/* + * /sys/kernel/debug/dri/0/ + * ├── gt0 + * │ ├── vf1 + * │ │ ├── config_blob + */ +static ssize_t config_blob_read(struct file *file, char __user *buf, + size_t count, loff_t *pos) +{ + struct dentry *dent = file_dentry(file); + struct dentry *parent = dent->d_parent; + struct xe_gt *gt = extract_gt(parent); + unsigned int vfid = extract_vfid(parent); + ssize_t ret; + void *tmp; + + ret = xe_gt_sriov_pf_config_save(gt, vfid, NULL, 0); + if (!ret) + return -ENODATA; + if (ret < 0) + return ret; + + tmp = kzalloc(ret, GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + ret = xe_gt_sriov_pf_config_save(gt, vfid, tmp, ret); + if (ret > 0) + ret = simple_read_from_buffer(buf, count, pos, tmp, ret); + + kfree(tmp); + return ret; +} + +static ssize_t config_blob_write(struct file *file, const char __user *buf, + size_t count, loff_t *pos) +{ + struct dentry *dent = file_dentry(file); + struct dentry *parent = dent->d_parent; + struct xe_gt *gt = extract_gt(parent); + unsigned int vfid = extract_vfid(parent); + ssize_t ret; + void *tmp; + + if (*pos) + return -EINVAL; + + if (!count) + return -ENODATA; + + if (count > SZ_4K) + return -EINVAL; + + tmp = kzalloc(count, GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + if (copy_from_user(tmp, buf, count)) { + ret = -EFAULT; + } else { + ret = xe_gt_sriov_pf_config_restore(gt, vfid, tmp, count); + if (!ret) + ret = count; + } + kfree(tmp); + return ret; +} + +static const struct file_operations config_blob_ops = { + .owner = THIS_MODULE, + .read = config_blob_read, + .write = config_blob_write, + .llseek = default_llseek, +}; + /** * xe_gt_sriov_pf_debugfs_register - Register SR-IOV PF specific entries in GT debugfs. * @gt: the &xe_gt to register @@ -423,5 +545,15 @@ void xe_gt_sriov_pf_debugfs_register(struct xe_gt *gt, struct dentry *root) pf_add_config_attrs(gt, vfdentry, VFID(n)); debugfs_create_file("control", 0600, vfdentry, NULL, &control_ops); + + /* for testing/debugging purposes only! */ + if (IS_ENABLED(CONFIG_DRM_XE_DEBUG)) { + debugfs_create_file("guc_state", + IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV) ? 0600 : 0400, + vfdentry, NULL, &guc_state_ops); + debugfs_create_file("config_blob", + IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV) ? 0600 : 0400, + vfdentry, NULL, &config_blob_ops); + } } } |