mirror of
https://github.com/torvalds/linux
synced 2024-09-23 21:07:52 +00:00
a85d4bcb8a
Chris' fix for my 32b breakage was incorrect. do_div returns a remainder. Go back to a divide macro which is more 32b friendly. Tested on x86-64. This has only been compile tested on 32b systems. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=48756 Cc: Chris Wilson <chris@chris-wilson.co.uk> Sincere-apologies: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com> [danvet: fixup 32bit compile-fail.] Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
112 lines
3.6 KiB
C
112 lines
3.6 KiB
C
/*
|
|
* Copyright © 2012 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*
|
|
* Authors:
|
|
* Ben Widawsky <ben@bwidawsk.net>
|
|
*
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/sysfs.h>
|
|
#include "i915_drv.h"
|
|
|
|
static u32 calc_residency(struct drm_device *dev, const u32 reg)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u64 raw_time; /* 32b value may overflow during fixed point math */
|
|
|
|
if (!intel_enable_rc6(dev))
|
|
return 0;
|
|
|
|
raw_time = I915_READ(reg) * 128ULL;
|
|
return DIV_ROUND_UP_ULL(raw_time, 100000);
|
|
}
|
|
|
|
static ssize_t
|
|
show_rc6_mask(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
|
|
return snprintf(buf, PAGE_SIZE, "%x", intel_enable_rc6(dminor->dev));
|
|
}
|
|
|
|
static ssize_t
|
|
show_rc6_ms(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
|
|
u32 rc6_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6);
|
|
return snprintf(buf, PAGE_SIZE, "%u", rc6_residency);
|
|
}
|
|
|
|
static ssize_t
|
|
show_rc6p_ms(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
|
|
u32 rc6p_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6p);
|
|
return snprintf(buf, PAGE_SIZE, "%u", rc6p_residency);
|
|
}
|
|
|
|
static ssize_t
|
|
show_rc6pp_ms(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
|
|
u32 rc6pp_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6pp);
|
|
return snprintf(buf, PAGE_SIZE, "%u", rc6pp_residency);
|
|
}
|
|
|
|
static DEVICE_ATTR(rc6_enable, S_IRUGO, show_rc6_mask, NULL);
|
|
static DEVICE_ATTR(rc6_residency_ms, S_IRUGO, show_rc6_ms, NULL);
|
|
static DEVICE_ATTR(rc6p_residency_ms, S_IRUGO, show_rc6p_ms, NULL);
|
|
static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL);
|
|
|
|
static struct attribute *rc6_attrs[] = {
|
|
&dev_attr_rc6_enable.attr,
|
|
&dev_attr_rc6_residency_ms.attr,
|
|
&dev_attr_rc6p_residency_ms.attr,
|
|
&dev_attr_rc6pp_residency_ms.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group rc6_attr_group = {
|
|
.name = power_group_name,
|
|
.attrs = rc6_attrs
|
|
};
|
|
|
|
void i915_setup_sysfs(struct drm_device *dev)
|
|
{
|
|
int ret;
|
|
|
|
/* ILK doesn't have any residency information */
|
|
if (INTEL_INFO(dev)->gen < 6)
|
|
return;
|
|
|
|
ret = sysfs_merge_group(&dev->primary->kdev.kobj, &rc6_attr_group);
|
|
if (ret)
|
|
DRM_ERROR("sysfs setup failed\n");
|
|
}
|
|
|
|
void i915_teardown_sysfs(struct drm_device *dev)
|
|
{
|
|
sysfs_unmerge_group(&dev->primary->kdev.kobj, &rc6_attr_group);
|
|
}
|