2012-04-10 22:17:01 -06:00
|
|
|
/*
|
|
|
|
* 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>
|
2012-05-25 17:56:25 -06:00
|
|
|
#include "intel_drv.h"
|
2012-04-10 22:17:01 -06:00
|
|
|
#include "i915_drv.h"
|
|
|
|
|
2012-06-30 21:45:07 -06:00
|
|
|
#ifdef CONFIG_PM
|
2012-04-10 22:17:01 -06:00
|
|
|
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;
|
|
|
|
|
2012-04-20 12:50:01 -06:00
|
|
|
raw_time = I915_READ(reg) * 128ULL;
|
|
|
|
return DIV_ROUND_UP_ULL(raw_time, 100000);
|
2012-04-10 22:17:01 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
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
|
|
|
|
};
|
2012-09-02 01:24:40 -06:00
|
|
|
#endif
|
2012-04-10 22:17:01 -06:00
|
|
|
|
2012-05-25 17:56:25 -06:00
|
|
|
static int l3_access_valid(struct drm_device *dev, loff_t offset)
|
|
|
|
{
|
|
|
|
if (!IS_IVYBRIDGE(dev))
|
|
|
|
return -EPERM;
|
|
|
|
|
|
|
|
if (offset % 4 != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (offset >= GEN7_L3LOG_SIZE)
|
|
|
|
return -ENXIO;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
i915_l3_read(struct file *filp, struct kobject *kobj,
|
|
|
|
struct bin_attribute *attr, char *buf,
|
|
|
|
loff_t offset, size_t count)
|
|
|
|
{
|
|
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
|
|
struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
|
|
|
|
struct drm_device *drm_dev = dminor->dev;
|
|
|
|
struct drm_i915_private *dev_priv = drm_dev->dev_private;
|
|
|
|
uint32_t misccpctl;
|
|
|
|
int i, ret;
|
|
|
|
|
|
|
|
ret = l3_access_valid(drm_dev, offset);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
ret = i915_mutex_lock_interruptible(drm_dev);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
misccpctl = I915_READ(GEN7_MISCCPCTL);
|
|
|
|
I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
|
|
|
|
|
|
|
|
for (i = offset; count >= 4 && i < GEN7_L3LOG_SIZE; i += 4, count -= 4)
|
|
|
|
*((uint32_t *)(&buf[i])) = I915_READ(GEN7_L3LOG_BASE + i);
|
|
|
|
|
|
|
|
I915_WRITE(GEN7_MISCCPCTL, misccpctl);
|
|
|
|
|
|
|
|
mutex_unlock(&drm_dev->struct_mutex);
|
|
|
|
|
|
|
|
return i - offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
i915_l3_write(struct file *filp, struct kobject *kobj,
|
|
|
|
struct bin_attribute *attr, char *buf,
|
|
|
|
loff_t offset, size_t count)
|
|
|
|
{
|
|
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
|
|
struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
|
|
|
|
struct drm_device *drm_dev = dminor->dev;
|
|
|
|
struct drm_i915_private *dev_priv = drm_dev->dev_private;
|
|
|
|
u32 *temp = NULL; /* Just here to make handling failures easy */
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = l3_access_valid(drm_dev, offset);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
ret = i915_mutex_lock_interruptible(drm_dev);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
if (!dev_priv->mm.l3_remap_info) {
|
|
|
|
temp = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL);
|
|
|
|
if (!temp) {
|
|
|
|
mutex_unlock(&drm_dev->struct_mutex);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = i915_gpu_idle(drm_dev);
|
|
|
|
if (ret) {
|
|
|
|
kfree(temp);
|
|
|
|
mutex_unlock(&drm_dev->struct_mutex);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* TODO: Ideally we really want a GPU reset here to make sure errors
|
|
|
|
* aren't propagated. Since I cannot find a stable way to reset the GPU
|
|
|
|
* at this point it is left as a TODO.
|
|
|
|
*/
|
|
|
|
if (temp)
|
|
|
|
dev_priv->mm.l3_remap_info = temp;
|
|
|
|
|
|
|
|
memcpy(dev_priv->mm.l3_remap_info + (offset/4),
|
|
|
|
buf + (offset/4),
|
|
|
|
count);
|
|
|
|
|
|
|
|
i915_gem_l3_remap(drm_dev);
|
|
|
|
|
|
|
|
mutex_unlock(&drm_dev->struct_mutex);
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct bin_attribute dpf_attrs = {
|
|
|
|
.attr = {.name = "l3_parity", .mode = (S_IRUSR | S_IWUSR)},
|
|
|
|
.size = GEN7_L3LOG_SIZE,
|
|
|
|
.read = i915_l3_read,
|
|
|
|
.write = i915_l3_write,
|
|
|
|
.mmap = NULL
|
|
|
|
};
|
|
|
|
|
2012-04-10 22:17:01 -06:00
|
|
|
void i915_setup_sysfs(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
2012-09-02 01:24:40 -06:00
|
|
|
#ifdef CONFIG_PM
|
2012-05-31 06:57:43 -06:00
|
|
|
if (INTEL_INFO(dev)->gen >= 6) {
|
|
|
|
ret = sysfs_merge_group(&dev->primary->kdev.kobj,
|
|
|
|
&rc6_attr_group);
|
|
|
|
if (ret)
|
|
|
|
DRM_ERROR("RC6 residency sysfs setup failed\n");
|
|
|
|
}
|
2012-09-02 01:24:40 -06:00
|
|
|
#endif
|
2012-07-24 21:47:31 -06:00
|
|
|
if (HAS_L3_GPU_CACHE(dev)) {
|
2012-05-31 06:57:43 -06:00
|
|
|
ret = device_create_bin_file(&dev->primary->kdev, &dpf_attrs);
|
|
|
|
if (ret)
|
|
|
|
DRM_ERROR("l3 parity sysfs setup failed\n");
|
|
|
|
}
|
2012-04-10 22:17:01 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
void i915_teardown_sysfs(struct drm_device *dev)
|
|
|
|
{
|
2012-05-25 17:56:25 -06:00
|
|
|
device_remove_bin_file(&dev->primary->kdev, &dpf_attrs);
|
2012-04-10 22:17:01 -06:00
|
|
|
sysfs_unmerge_group(&dev->primary->kdev.kobj, &rc6_attr_group);
|
|
|
|
}
|