mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 15:20:37 +07:00
drm/i915/params: add i915 parameters to debugfs
Add a debugfs subdirectory i915_params with all the i915 module parameters. This is a first step, with lots of boilerplate, and not much benefit yet. This will result in a new device specific debugfs directory at /sys/kernel/debug/dri/<N>/i915_params duplicating the module specific sysfs directory at /sys/module/i915/parameters/. Going forward, all users of the parameters should use the debugfs, with the module parameters being phased out. Add debugfs permissions to I915_PARAMS_FOR_EACH(). This duplicates the mode with module parameter sysfs, but the goal is to make the module parameters read-only initial values for device specific parameters. 0 mode will bypass debugfs creation. Use it for verbose_state_checks which will need special attention in follow-up work. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/600101c8433e7caf9303663fc85a9972fa1f05e7.1575560168.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula
parent
f22fd33489
commit
c43c5a8818
@ -66,7 +66,10 @@ i915-y += \
|
||||
i915_user_extensions.o
|
||||
|
||||
i915-$(CONFIG_COMPAT) += i915_ioc32.o
|
||||
i915-$(CONFIG_DEBUG_FS) += i915_debugfs.o display/intel_pipe_crc.o
|
||||
i915-$(CONFIG_DEBUG_FS) += \
|
||||
i915_debugfs.o \
|
||||
i915_debugfs_params.o \
|
||||
display/intel_pipe_crc.o
|
||||
i915-$(CONFIG_PERF_EVENTS) += i915_pmu.o
|
||||
|
||||
# "Graphics Technology" (aka we talk to the gpu)
|
||||
|
||||
@ -48,6 +48,7 @@
|
||||
#include "gt/uc/intel_guc_submission.h"
|
||||
|
||||
#include "i915_debugfs.h"
|
||||
#include "i915_debugfs_params.h"
|
||||
#include "i915_irq.h"
|
||||
#include "i915_trace.h"
|
||||
#include "intel_csr.h"
|
||||
@ -4311,9 +4312,10 @@ int i915_debugfs_register(struct drm_i915_private *dev_priv)
|
||||
struct drm_minor *minor = dev_priv->drm.primary;
|
||||
int i;
|
||||
|
||||
i915_debugfs_params(dev_priv);
|
||||
|
||||
debugfs_create_file("i915_forcewake_user", S_IRUSR, minor->debugfs_root,
|
||||
to_i915(minor->dev), &i915_forcewake_fops);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
|
||||
debugfs_create_file(i915_debugfs_files[i].name,
|
||||
S_IRUGO | S_IWUSR,
|
||||
|
||||
233
drivers/gpu/drm/i915/i915_debugfs_params.c
Normal file
233
drivers/gpu/drm/i915/i915_debugfs_params.c
Normal file
@ -0,0 +1,233 @@
|
||||
// SPDX-License-Identifier: MIT
|
||||
/*
|
||||
* Copyright © 2019 Intel Corporation
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
|
||||
#include "i915_drv.h"
|
||||
#include "i915_params.h"
|
||||
|
||||
/* int param */
|
||||
static int i915_param_int_show(struct seq_file *m, void *data)
|
||||
{
|
||||
int *value = m->private;
|
||||
|
||||
seq_printf(m, "%d\n", *value);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int i915_param_int_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, i915_param_int_show, inode->i_private);
|
||||
}
|
||||
|
||||
static ssize_t i915_param_int_write(struct file *file,
|
||||
const char __user *ubuf, size_t len,
|
||||
loff_t *offp)
|
||||
{
|
||||
struct seq_file *m = file->private_data;
|
||||
int *value = m->private;
|
||||
int ret;
|
||||
|
||||
ret = kstrtoint_from_user(ubuf, len, 0, value);
|
||||
|
||||
return ret ?: len;
|
||||
}
|
||||
|
||||
static const struct file_operations i915_param_int_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = i915_param_int_open,
|
||||
.read = seq_read,
|
||||
.write = i915_param_int_write,
|
||||
.llseek = default_llseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
static const struct file_operations i915_param_int_fops_ro = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = i915_param_int_open,
|
||||
.read = seq_read,
|
||||
.llseek = default_llseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
/* unsigned int param */
|
||||
static int i915_param_uint_show(struct seq_file *m, void *data)
|
||||
{
|
||||
unsigned int *value = m->private;
|
||||
|
||||
seq_printf(m, "%u\n", *value);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int i915_param_uint_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, i915_param_uint_show, inode->i_private);
|
||||
}
|
||||
|
||||
static ssize_t i915_param_uint_write(struct file *file,
|
||||
const char __user *ubuf, size_t len,
|
||||
loff_t *offp)
|
||||
{
|
||||
struct seq_file *m = file->private_data;
|
||||
unsigned int *value = m->private;
|
||||
int ret;
|
||||
|
||||
ret = kstrtouint_from_user(ubuf, len, 0, value);
|
||||
|
||||
return ret ?: len;
|
||||
}
|
||||
|
||||
static const struct file_operations i915_param_uint_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = i915_param_uint_open,
|
||||
.read = seq_read,
|
||||
.write = i915_param_uint_write,
|
||||
.llseek = default_llseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
static const struct file_operations i915_param_uint_fops_ro = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = i915_param_uint_open,
|
||||
.read = seq_read,
|
||||
.llseek = default_llseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
/* char * param */
|
||||
static int i915_param_charp_show(struct seq_file *m, void *data)
|
||||
{
|
||||
const char **s = m->private;
|
||||
|
||||
seq_printf(m, "%s\n", *s);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int i915_param_charp_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, i915_param_charp_show, inode->i_private);
|
||||
}
|
||||
|
||||
static ssize_t i915_param_charp_write(struct file *file,
|
||||
const char __user *ubuf, size_t len,
|
||||
loff_t *offp)
|
||||
{
|
||||
struct seq_file *m = file->private_data;
|
||||
char **s = m->private;
|
||||
char *new, *old;
|
||||
|
||||
/* FIXME: remove locking after params aren't the module params */
|
||||
kernel_param_lock(THIS_MODULE);
|
||||
|
||||
old = *s;
|
||||
new = strndup_user(ubuf, PAGE_SIZE);
|
||||
if (IS_ERR(new)) {
|
||||
len = PTR_ERR(new);
|
||||
goto out;
|
||||
}
|
||||
|
||||
*s = new;
|
||||
|
||||
kfree(old);
|
||||
out:
|
||||
kernel_param_unlock(THIS_MODULE);
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static const struct file_operations i915_param_charp_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = i915_param_charp_open,
|
||||
.read = seq_read,
|
||||
.write = i915_param_charp_write,
|
||||
.llseek = default_llseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
static const struct file_operations i915_param_charp_fops_ro = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = i915_param_charp_open,
|
||||
.read = seq_read,
|
||||
.llseek = default_llseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
#define RO(mode) (((mode) & 0222) == 0)
|
||||
|
||||
static struct dentry *
|
||||
i915_debugfs_create_int(const char *name, umode_t mode,
|
||||
struct dentry *parent, int *value)
|
||||
{
|
||||
return debugfs_create_file_unsafe(name, mode, parent, value,
|
||||
RO(mode) ? &i915_param_int_fops_ro :
|
||||
&i915_param_int_fops);
|
||||
}
|
||||
|
||||
static struct dentry *
|
||||
i915_debugfs_create_uint(const char *name, umode_t mode,
|
||||
struct dentry *parent, unsigned int *value)
|
||||
{
|
||||
return debugfs_create_file_unsafe(name, mode, parent, value,
|
||||
RO(mode) ? &i915_param_uint_fops_ro :
|
||||
&i915_param_uint_fops);
|
||||
}
|
||||
|
||||
static struct dentry *
|
||||
i915_debugfs_create_charp(const char *name, umode_t mode,
|
||||
struct dentry *parent, char **value)
|
||||
{
|
||||
return debugfs_create_file(name, mode, parent, value,
|
||||
RO(mode) ? &i915_param_charp_fops_ro :
|
||||
&i915_param_charp_fops);
|
||||
}
|
||||
|
||||
static __always_inline void
|
||||
_i915_param_create_file(struct dentry *parent, const char *name,
|
||||
const char *type, int mode, void *value)
|
||||
{
|
||||
if (!mode)
|
||||
return;
|
||||
|
||||
if (!__builtin_strcmp(type, "bool"))
|
||||
debugfs_create_bool(name, mode, parent, value);
|
||||
else if (!__builtin_strcmp(type, "int"))
|
||||
i915_debugfs_create_int(name, mode, parent, value);
|
||||
else if (!__builtin_strcmp(type, "unsigned int"))
|
||||
i915_debugfs_create_uint(name, mode, parent, value);
|
||||
else if (!__builtin_strcmp(type, "unsigned long"))
|
||||
debugfs_create_ulong(name, mode, parent, value);
|
||||
else if (!__builtin_strcmp(type, "char *"))
|
||||
i915_debugfs_create_charp(name, mode, parent, value);
|
||||
else
|
||||
WARN(1, "no debugfs fops defined for param type %s (i915.%s)\n",
|
||||
type, name);
|
||||
}
|
||||
|
||||
/* add a subdirectory with files for each i915 param */
|
||||
struct dentry *i915_debugfs_params(struct drm_i915_private *i915)
|
||||
{
|
||||
struct drm_minor *minor = i915->drm.primary;
|
||||
struct i915_params *params = &i915_modparams;
|
||||
struct dentry *dir;
|
||||
|
||||
dir = debugfs_create_dir("i915_params", minor->debugfs_root);
|
||||
if (IS_ERR(dir))
|
||||
return dir;
|
||||
|
||||
/*
|
||||
* Note: We could create files for params needing special handling
|
||||
* here. Set mode in params to 0 to skip the generic create file, or
|
||||
* just let the generic create file fail silently with -EEXIST.
|
||||
*/
|
||||
|
||||
#define REGISTER(T, x, unused, mode, ...) _i915_param_create_file(dir, #x, #T, mode, ¶ms->x);
|
||||
I915_PARAMS_FOR_EACH(REGISTER);
|
||||
#undef REGISTER
|
||||
|
||||
return dir;
|
||||
}
|
||||
14
drivers/gpu/drm/i915/i915_debugfs_params.h
Normal file
14
drivers/gpu/drm/i915/i915_debugfs_params.h
Normal file
@ -0,0 +1,14 @@
|
||||
/* SPDX-License-Identifier: MIT */
|
||||
/*
|
||||
* Copyright © 2019 Intel Corporation
|
||||
*/
|
||||
|
||||
#ifndef __I915_DEBUGFS_PARAMS__
|
||||
#define __I915_DEBUGFS_PARAMS__
|
||||
|
||||
struct dentry;
|
||||
struct drm_i915_private;
|
||||
|
||||
struct dentry *i915_debugfs_params(struct drm_i915_private *i915);
|
||||
|
||||
#endif /* __I915_DEBUGFS_PARAMS__ */
|
||||
@ -35,7 +35,7 @@
|
||||
MODULE_PARM_DESC(name, desc)
|
||||
|
||||
struct i915_params i915_modparams __read_mostly = {
|
||||
#define MEMBER(T, member, value) .member = (value),
|
||||
#define MEMBER(T, member, value, ...) .member = (value),
|
||||
I915_PARAMS_FOR_EACH(MEMBER)
|
||||
#undef MEMBER
|
||||
};
|
||||
|
||||
@ -36,49 +36,51 @@ struct drm_printer;
|
||||
/*
|
||||
* Invoke param, a function-like macro, for each i915 param, with arguments:
|
||||
*
|
||||
* param(type, name, value)
|
||||
* param(type, name, value, mode)
|
||||
*
|
||||
* type: parameter type, one of {bool, int, unsigned int, char *}
|
||||
* type: parameter type, one of {bool, int, unsigned int, unsigned long, char *}
|
||||
* name: name of the parameter
|
||||
* value: initial/default value of the parameter
|
||||
* mode: debugfs file permissions, one of {0400, 0600, 0}, use 0 to not create
|
||||
* debugfs file
|
||||
*/
|
||||
#define I915_PARAMS_FOR_EACH(param) \
|
||||
param(char *, vbt_firmware, NULL) \
|
||||
param(int, modeset, -1) \
|
||||
param(int, lvds_channel_mode, 0) \
|
||||
param(int, panel_use_ssc, -1) \
|
||||
param(int, vbt_sdvo_panel_type, -1) \
|
||||
param(int, enable_dc, -1) \
|
||||
param(int, enable_fbc, -1) \
|
||||
param(int, enable_psr, -1) \
|
||||
param(int, disable_power_well, -1) \
|
||||
param(int, enable_ips, 1) \
|
||||
param(int, invert_brightness, 0) \
|
||||
param(int, enable_guc, 0) \
|
||||
param(int, guc_log_level, -1) \
|
||||
param(char *, guc_firmware_path, NULL) \
|
||||
param(char *, huc_firmware_path, NULL) \
|
||||
param(char *, dmc_firmware_path, NULL) \
|
||||
param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO)) \
|
||||
param(int, edp_vswing, 0) \
|
||||
param(int, reset, 3) \
|
||||
param(unsigned int, inject_probe_failure, 0) \
|
||||
param(int, fastboot, -1) \
|
||||
param(int, enable_dpcd_backlight, 0) \
|
||||
param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE) \
|
||||
param(unsigned long, fake_lmem_start, 0) \
|
||||
param(char *, vbt_firmware, NULL, 0400) \
|
||||
param(int, modeset, -1, 0400) \
|
||||
param(int, lvds_channel_mode, 0, 0400) \
|
||||
param(int, panel_use_ssc, -1, 0600) \
|
||||
param(int, vbt_sdvo_panel_type, -1, 0400) \
|
||||
param(int, enable_dc, -1, 0400) \
|
||||
param(int, enable_fbc, -1, 0600) \
|
||||
param(int, enable_psr, -1, 0600) \
|
||||
param(int, disable_power_well, -1, 0400) \
|
||||
param(int, enable_ips, 1, 0600) \
|
||||
param(int, invert_brightness, 0, 0600) \
|
||||
param(int, enable_guc, 0, 0400) \
|
||||
param(int, guc_log_level, -1, 0400) \
|
||||
param(char *, guc_firmware_path, NULL, 0400) \
|
||||
param(char *, huc_firmware_path, NULL, 0400) \
|
||||
param(char *, dmc_firmware_path, NULL, 0400) \
|
||||
param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO), 0600) \
|
||||
param(int, edp_vswing, 0, 0400) \
|
||||
param(int, reset, 3, 0600) \
|
||||
param(unsigned int, inject_probe_failure, 0, 0600) \
|
||||
param(int, fastboot, -1, 0600) \
|
||||
param(int, enable_dpcd_backlight, 0, 0600) \
|
||||
param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \
|
||||
param(unsigned long, fake_lmem_start, 0, 0400) \
|
||||
/* leave bools at the end to not create holes */ \
|
||||
param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
|
||||
param(bool, enable_hangcheck, true) \
|
||||
param(bool, prefault_disable, false) \
|
||||
param(bool, load_detect_test, false) \
|
||||
param(bool, force_reset_modeset_test, false) \
|
||||
param(bool, error_capture, true) \
|
||||
param(bool, disable_display, false) \
|
||||
param(bool, verbose_state_checks, true) \
|
||||
param(bool, nuclear_pageflip, false) \
|
||||
param(bool, enable_dp_mst, true) \
|
||||
param(bool, enable_gvt, false)
|
||||
param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT), 0400) \
|
||||
param(bool, enable_hangcheck, true, 0600) \
|
||||
param(bool, prefault_disable, false, 0600) \
|
||||
param(bool, load_detect_test, false, 0600) \
|
||||
param(bool, force_reset_modeset_test, false, 0600) \
|
||||
param(bool, error_capture, true, 0600) \
|
||||
param(bool, disable_display, false, 0400) \
|
||||
param(bool, verbose_state_checks, true, 0) \
|
||||
param(bool, nuclear_pageflip, false, 0400) \
|
||||
param(bool, enable_dp_mst, true, 0600) \
|
||||
param(bool, enable_gvt, false, 0400)
|
||||
|
||||
#define MEMBER(T, member, ...) T member;
|
||||
struct i915_params {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user