diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_guc_log_debugfs.c')
-rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_guc_log_debugfs.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log_debugfs.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_log_debugfs.c new file mode 100644 index 000000000000..129e0cf7dfe2 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log_debugfs.c @@ -0,0 +1,124 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2020 Intel Corporation + */ + +#include <linux/fs.h> +#include <drm/drm_print.h> + +#include "gt/debugfs_gt.h" +#include "intel_guc.h" +#include "intel_guc_log.h" +#include "intel_guc_log_debugfs.h" + +static int guc_log_dump_show(struct seq_file *m, void *data) +{ + struct drm_printer p = drm_seq_file_printer(m); + + return intel_guc_log_dump(m->private, &p, false); +} +DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_log_dump); + +static int guc_load_err_log_dump_show(struct seq_file *m, void *data) +{ + struct drm_printer p = drm_seq_file_printer(m); + + return intel_guc_log_dump(m->private, &p, true); +} +DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_load_err_log_dump); + +static int guc_log_level_get(void *data, u64 *val) +{ + struct intel_guc_log *log = data; + + if (!intel_guc_is_used(log_to_guc(log))) + return -ENODEV; + + *val = intel_guc_log_get_level(log); + + return 0; +} + +static int guc_log_level_set(void *data, u64 val) +{ + struct intel_guc_log *log = data; + + if (!intel_guc_is_used(log_to_guc(log))) + return -ENODEV; + + return intel_guc_log_set_level(log, val); +} + +DEFINE_SIMPLE_ATTRIBUTE(guc_log_level_fops, + guc_log_level_get, guc_log_level_set, + "%lld\n"); + +static int guc_log_relay_open(struct inode *inode, struct file *file) +{ + struct intel_guc_log *log = inode->i_private; + + if (!intel_guc_is_ready(log_to_guc(log))) + return -ENODEV; + + file->private_data = log; + + return intel_guc_log_relay_open(log); +} + +static ssize_t +guc_log_relay_write(struct file *filp, + const char __user *ubuf, + size_t cnt, + loff_t *ppos) +{ + struct intel_guc_log *log = filp->private_data; + int val; + int ret; + + ret = kstrtoint_from_user(ubuf, cnt, 0, &val); + if (ret < 0) + return ret; + + /* + * Enable and start the guc log relay on value of 1. + * Flush log relay for any other value. + */ + if (val == 1) + ret = intel_guc_log_relay_start(log); + else + intel_guc_log_relay_flush(log); + + return ret ?: cnt; +} + +static int guc_log_relay_release(struct inode *inode, struct file *file) +{ + struct intel_guc_log *log = inode->i_private; + + intel_guc_log_relay_close(log); + return 0; +} + +static const struct file_operations guc_log_relay_fops = { + .owner = THIS_MODULE, + .open = guc_log_relay_open, + .write = guc_log_relay_write, + .release = guc_log_relay_release, +}; + +void intel_guc_log_debugfs_register(struct intel_guc_log *log, + struct dentry *root) +{ + static const struct debugfs_gt_file files[] = { + { "guc_log_dump", &guc_log_dump_fops, NULL }, + { "guc_load_err_log_dump", &guc_load_err_log_dump_fops, NULL }, + { "guc_log_level", &guc_log_level_fops, NULL }, + { "guc_log_relay", &guc_log_relay_fops, NULL }, + }; + + if (!intel_guc_is_supported(log_to_guc(log))) + return; + + intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), log); +} + |