2009-11-02 16:53:02 -07:00
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/*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Rafał Miłecki <zajec5@gmail.com>
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2009-12-28 11:58:44 -07:00
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* Alex Deucher <alexdeucher@gmail.com>
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2009-11-02 16:53:02 -07:00
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*/
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2012-10-02 11:01:07 -06:00
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#include <drm/drmP.h>
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2009-11-02 16:53:02 -07:00
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#include "radeon.h"
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2010-02-17 22:58:36 -07:00
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#include "avivod.h"
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2011-04-12 12:49:23 -06:00
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#include "atom.h"
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2010-05-07 13:10:16 -06:00
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#include <linux/power_supply.h>
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2010-07-02 10:58:16 -06:00
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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2009-11-02 16:53:02 -07:00
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2009-12-22 15:02:16 -07:00
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#define RADEON_IDLE_LOOP_MS 100
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#define RADEON_RECLOCK_DELAY_MS 200
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2010-01-07 16:22:47 -07:00
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#define RADEON_WAIT_VBLANK_TIMEOUT 200
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2009-12-22 15:02:16 -07:00
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2010-06-07 16:29:44 -06:00
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static const char *radeon_pm_state_type_name[5] = {
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2012-10-01 16:28:09 -06:00
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"",
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2010-06-07 16:29:44 -06:00
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"Powersave",
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"Battery",
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"Balanced",
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"Performance",
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};
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2010-05-07 13:10:16 -06:00
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static void radeon_dynpm_idle_work_handler(struct work_struct *work);
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2009-12-22 15:02:16 -07:00
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static int radeon_debugfs_pm_init(struct radeon_device *rdev);
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2010-05-07 13:10:16 -06:00
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static bool radeon_pm_in_vbl(struct radeon_device *rdev);
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static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish);
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static void radeon_pm_update_profile(struct radeon_device *rdev);
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static void radeon_pm_set_clocks(struct radeon_device *rdev);
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2011-11-04 08:09:41 -06:00
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int radeon_pm_get_type_index(struct radeon_device *rdev,
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enum radeon_pm_state_type ps_type,
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int instance)
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{
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int i;
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int found_instance = -1;
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for (i = 0; i < rdev->pm.num_power_states; i++) {
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if (rdev->pm.power_state[i].type == ps_type) {
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found_instance++;
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if (found_instance == instance)
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return i;
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}
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}
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/* return default if no match */
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return rdev->pm.default_power_state_index;
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}
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2012-07-31 15:14:35 -06:00
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void radeon_pm_acpi_event_handler(struct radeon_device *rdev)
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2010-05-07 13:10:16 -06:00
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{
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2012-07-31 15:14:35 -06:00
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if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
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if (rdev->pm.profile == PM_PROFILE_AUTO) {
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mutex_lock(&rdev->pm.mutex);
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radeon_pm_update_profile(rdev);
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radeon_pm_set_clocks(rdev);
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mutex_unlock(&rdev->pm.mutex);
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2010-05-07 13:10:16 -06:00
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}
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}
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}
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static void radeon_pm_update_profile(struct radeon_device *rdev)
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{
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switch (rdev->pm.profile) {
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case PM_PROFILE_DEFAULT:
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rdev->pm.profile_index = PM_PROFILE_DEFAULT_IDX;
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break;
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case PM_PROFILE_AUTO:
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if (power_supply_is_system_supplied() > 0) {
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if (rdev->pm.active_crtc_count > 1)
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rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
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else
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rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
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} else {
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if (rdev->pm.active_crtc_count > 1)
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2010-06-02 15:56:01 -06:00
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rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
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2010-05-07 13:10:16 -06:00
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else
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2010-06-02 15:56:01 -06:00
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rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
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2010-05-07 13:10:16 -06:00
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}
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break;
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case PM_PROFILE_LOW:
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if (rdev->pm.active_crtc_count > 1)
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rdev->pm.profile_index = PM_PROFILE_LOW_MH_IDX;
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else
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rdev->pm.profile_index = PM_PROFILE_LOW_SH_IDX;
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break;
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2010-06-02 15:56:01 -06:00
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case PM_PROFILE_MID:
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if (rdev->pm.active_crtc_count > 1)
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rdev->pm.profile_index = PM_PROFILE_MID_MH_IDX;
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else
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rdev->pm.profile_index = PM_PROFILE_MID_SH_IDX;
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break;
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2010-05-07 13:10:16 -06:00
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case PM_PROFILE_HIGH:
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if (rdev->pm.active_crtc_count > 1)
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rdev->pm.profile_index = PM_PROFILE_HIGH_MH_IDX;
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else
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rdev->pm.profile_index = PM_PROFILE_HIGH_SH_IDX;
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break;
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}
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if (rdev->pm.active_crtc_count == 0) {
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rdev->pm.requested_power_state_index =
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rdev->pm.profiles[rdev->pm.profile_index].dpms_off_ps_idx;
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rdev->pm.requested_clock_mode_index =
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rdev->pm.profiles[rdev->pm.profile_index].dpms_off_cm_idx;
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} else {
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rdev->pm.requested_power_state_index =
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rdev->pm.profiles[rdev->pm.profile_index].dpms_on_ps_idx;
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rdev->pm.requested_clock_mode_index =
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rdev->pm.profiles[rdev->pm.profile_index].dpms_on_cm_idx;
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}
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}
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2009-12-22 15:02:16 -07:00
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2010-04-26 13:52:20 -06:00
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static void radeon_unmap_vram_bos(struct radeon_device *rdev)
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{
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struct radeon_bo *bo, *n;
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if (list_empty(&rdev->gem.objects))
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return;
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list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) {
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if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
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ttm_bo_unmap_virtual(&bo->tbo);
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}
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}
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2010-05-07 13:10:16 -06:00
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static void radeon_sync_with_vblank(struct radeon_device *rdev)
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2010-04-24 12:50:23 -06:00
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{
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2010-05-07 13:10:16 -06:00
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if (rdev->pm.active_crtcs) {
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rdev->pm.vblank_sync = false;
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wait_event_timeout(
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rdev->irq.vblank_queue, rdev->pm.vblank_sync,
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msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
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}
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}
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static void radeon_set_power_state(struct radeon_device *rdev)
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{
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u32 sclk, mclk;
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2010-05-27 15:01:41 -06:00
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bool misc_after = false;
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2010-05-07 13:10:16 -06:00
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if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
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(rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
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return;
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if (radeon_gui_idle(rdev)) {
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sclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
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clock_info[rdev->pm.requested_clock_mode_index].sclk;
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2011-01-06 19:19:26 -07:00
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if (sclk > rdev->pm.default_sclk)
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sclk = rdev->pm.default_sclk;
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2010-05-07 13:10:16 -06:00
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2012-10-01 17:25:11 -06:00
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/* starting with BTC, there is one state that is used for both
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* MH and SH. Difference is that we always use the high clock index for
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* mclk.
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*/
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if ((rdev->pm.pm_method == PM_METHOD_PROFILE) &&
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(rdev->family >= CHIP_BARTS) &&
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rdev->pm.active_crtc_count &&
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((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) ||
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(rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX)))
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mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
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clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].mclk;
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else
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mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
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clock_info[rdev->pm.requested_clock_mode_index].mclk;
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2011-01-06 19:19:26 -07:00
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if (mclk > rdev->pm.default_mclk)
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mclk = rdev->pm.default_mclk;
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2010-05-07 13:10:16 -06:00
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2010-05-27 15:01:41 -06:00
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/* upvolt before raising clocks, downvolt after lowering clocks */
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if (sclk < rdev->pm.current_sclk)
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misc_after = true;
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2010-05-07 13:10:16 -06:00
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2010-05-27 15:01:41 -06:00
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radeon_sync_with_vblank(rdev);
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2010-05-07 13:10:16 -06:00
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2010-05-27 15:01:41 -06:00
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if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
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2010-05-07 13:10:16 -06:00
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if (!radeon_pm_in_vbl(rdev))
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return;
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2010-05-27 15:01:41 -06:00
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}
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2010-05-07 13:10:16 -06:00
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2010-05-27 15:01:41 -06:00
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radeon_pm_prepare(rdev);
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2010-05-07 13:10:16 -06:00
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2010-05-27 15:01:41 -06:00
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if (!misc_after)
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/* voltage, pcie lanes, etc.*/
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radeon_pm_misc(rdev);
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/* set engine clock */
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if (sclk != rdev->pm.current_sclk) {
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radeon_pm_debug_check_in_vbl(rdev, false);
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radeon_set_engine_clock(rdev, sclk);
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radeon_pm_debug_check_in_vbl(rdev, true);
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rdev->pm.current_sclk = sclk;
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2010-08-01 18:42:55 -06:00
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DRM_DEBUG_DRIVER("Setting: e: %d\n", sclk);
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2010-05-27 15:01:41 -06:00
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}
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/* set memory clock */
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2012-02-23 15:53:48 -07:00
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if (rdev->asic->pm.set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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2010-05-27 15:01:41 -06:00
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radeon_pm_debug_check_in_vbl(rdev, false);
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radeon_set_memory_clock(rdev, mclk);
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radeon_pm_debug_check_in_vbl(rdev, true);
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rdev->pm.current_mclk = mclk;
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2010-08-01 18:42:55 -06:00
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DRM_DEBUG_DRIVER("Setting: m: %d\n", mclk);
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2010-05-07 13:10:16 -06:00
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}
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2010-04-26 13:45:23 -06:00
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2010-05-27 15:01:41 -06:00
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if (misc_after)
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/* voltage, pcie lanes, etc.*/
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radeon_pm_misc(rdev);
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radeon_pm_finish(rdev);
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2010-05-07 13:10:16 -06:00
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rdev->pm.current_power_state_index = rdev->pm.requested_power_state_index;
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rdev->pm.current_clock_mode_index = rdev->pm.requested_clock_mode_index;
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} else
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2010-08-01 18:42:55 -06:00
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DRM_DEBUG_DRIVER("pm: GUI not idle!!!\n");
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2010-05-07 13:10:16 -06:00
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}
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static void radeon_pm_set_clocks(struct radeon_device *rdev)
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{
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2012-12-17 09:04:32 -07:00
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int i, r;
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2010-04-27 11:58:46 -06:00
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2010-08-13 08:53:35 -06:00
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/* no need to take locks, etc. if nothing's going to change */
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if ((rdev->pm.requested_clock_mode_index == rdev->pm.current_clock_mode_index) &&
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(rdev->pm.requested_power_state_index == rdev->pm.current_power_state_index))
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return;
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2010-04-27 15:16:58 -06:00
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mutex_lock(&rdev->ddev->struct_mutex);
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2012-05-11 06:57:18 -06:00
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down_write(&rdev->pm.mclk_lock);
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2012-05-09 07:34:45 -06:00
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mutex_lock(&rdev->ring_lock);
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2010-04-29 14:14:02 -06:00
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2012-08-10 11:12:08 -06:00
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/* wait for the rings to drain */
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for (i = 0; i < RADEON_NUM_RINGS; i++) {
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struct radeon_ring *ring = &rdev->ring[i];
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2012-12-17 09:04:32 -07:00
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if (!ring->ready) {
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continue;
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}
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r = radeon_fence_wait_empty_locked(rdev, i);
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if (r) {
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/* needs a GPU reset dont reset here */
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mutex_unlock(&rdev->ring_lock);
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up_write(&rdev->pm.mclk_lock);
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mutex_unlock(&rdev->ddev->struct_mutex);
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return;
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}
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2010-04-29 14:14:02 -06:00
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}
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2012-08-10 11:12:08 -06:00
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2010-04-26 13:52:20 -06:00
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radeon_unmap_vram_bos(rdev);
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2010-05-07 13:10:16 -06:00
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if (rdev->irq.installed) {
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2010-04-26 13:45:23 -06:00
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for (i = 0; i < rdev->num_crtc; i++) {
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if (rdev->pm.active_crtcs & (1 << i)) {
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rdev->pm.req_vblank |= (1 << i);
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drm_vblank_get(rdev->ddev, i);
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}
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}
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}
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2010-04-28 22:22:43 -06:00
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2010-05-07 13:10:16 -06:00
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radeon_set_power_state(rdev);
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2010-04-26 13:45:23 -06:00
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2010-05-07 13:10:16 -06:00
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if (rdev->irq.installed) {
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2010-04-26 13:45:23 -06:00
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for (i = 0; i < rdev->num_crtc; i++) {
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if (rdev->pm.req_vblank & (1 << i)) {
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rdev->pm.req_vblank &= ~(1 << i);
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drm_vblank_put(rdev->ddev, i);
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}
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|
|
|
}
|
|
|
|
}
|
2010-04-26 13:52:20 -06:00
|
|
|
|
2010-04-24 12:50:23 -06:00
|
|
|
/* update display watermarks based on new power state */
|
|
|
|
radeon_update_bandwidth_info(rdev);
|
|
|
|
if (rdev->pm.active_crtc_count)
|
|
|
|
radeon_bandwidth_update(rdev);
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
|
2010-04-26 13:45:23 -06:00
|
|
|
|
2012-05-09 07:34:45 -06:00
|
|
|
mutex_unlock(&rdev->ring_lock);
|
2012-05-11 06:57:18 -06:00
|
|
|
up_write(&rdev->pm.mclk_lock);
|
2010-04-27 15:16:58 -06:00
|
|
|
mutex_unlock(&rdev->ddev->struct_mutex);
|
2010-04-24 12:50:23 -06:00
|
|
|
}
|
|
|
|
|
2010-06-07 16:29:44 -06:00
|
|
|
static void radeon_pm_print_states(struct radeon_device *rdev)
|
|
|
|
{
|
|
|
|
int i, j;
|
|
|
|
struct radeon_power_state *power_state;
|
|
|
|
struct radeon_pm_clock_info *clock_info;
|
|
|
|
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("%d Power State(s)\n", rdev->pm.num_power_states);
|
2010-06-07 16:29:44 -06:00
|
|
|
for (i = 0; i < rdev->pm.num_power_states; i++) {
|
|
|
|
power_state = &rdev->pm.power_state[i];
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("State %d: %s\n", i,
|
2010-06-07 16:29:44 -06:00
|
|
|
radeon_pm_state_type_name[power_state->type]);
|
|
|
|
if (i == rdev->pm.default_power_state_index)
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("\tDefault");
|
2010-06-07 16:29:44 -06:00
|
|
|
if ((rdev->flags & RADEON_IS_PCIE) && !(rdev->flags & RADEON_IS_IGP))
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("\t%d PCIE Lanes\n", power_state->pcie_lanes);
|
2010-06-07 16:29:44 -06:00
|
|
|
if (power_state->flags & RADEON_PM_STATE_SINGLE_DISPLAY_ONLY)
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("\tSingle display only\n");
|
|
|
|
DRM_DEBUG_DRIVER("\t%d Clock Mode(s)\n", power_state->num_clock_modes);
|
2010-06-07 16:29:44 -06:00
|
|
|
for (j = 0; j < power_state->num_clock_modes; j++) {
|
|
|
|
clock_info = &(power_state->clock_info[j]);
|
|
|
|
if (rdev->flags & RADEON_IS_IGP)
|
2012-10-01 16:28:09 -06:00
|
|
|
DRM_DEBUG_DRIVER("\t\t%d e: %d\n",
|
|
|
|
j,
|
|
|
|
clock_info->sclk * 10);
|
2010-06-07 16:29:44 -06:00
|
|
|
else
|
2012-10-01 16:28:09 -06:00
|
|
|
DRM_DEBUG_DRIVER("\t\t%d e: %d\tm: %d\tv: %d\n",
|
|
|
|
j,
|
|
|
|
clock_info->sclk * 10,
|
|
|
|
clock_info->mclk * 10,
|
|
|
|
clock_info->voltage.voltage);
|
2010-06-07 16:29:44 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static ssize_t radeon_get_pm_profile(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
2010-04-24 12:50:23 -06:00
|
|
|
{
|
|
|
|
struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
|
|
|
|
struct radeon_device *rdev = ddev->dev_private;
|
2010-05-07 13:10:16 -06:00
|
|
|
int cp = rdev->pm.profile;
|
2010-04-24 12:50:23 -06:00
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
return snprintf(buf, PAGE_SIZE, "%s\n",
|
|
|
|
(cp == PM_PROFILE_AUTO) ? "auto" :
|
|
|
|
(cp == PM_PROFILE_LOW) ? "low" :
|
2010-07-28 05:25:58 -06:00
|
|
|
(cp == PM_PROFILE_MID) ? "mid" :
|
2010-05-07 13:10:16 -06:00
|
|
|
(cp == PM_PROFILE_HIGH) ? "high" : "default");
|
2010-04-24 12:50:23 -06:00
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static ssize_t radeon_set_pm_profile(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
const char *buf,
|
|
|
|
size_t count)
|
2010-04-24 12:50:23 -06:00
|
|
|
{
|
|
|
|
struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
|
|
|
|
struct radeon_device *rdev = ddev->dev_private;
|
|
|
|
|
|
|
|
mutex_lock(&rdev->pm.mutex);
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
|
|
|
|
if (strncmp("default", buf, strlen("default")) == 0)
|
|
|
|
rdev->pm.profile = PM_PROFILE_DEFAULT;
|
|
|
|
else if (strncmp("auto", buf, strlen("auto")) == 0)
|
|
|
|
rdev->pm.profile = PM_PROFILE_AUTO;
|
|
|
|
else if (strncmp("low", buf, strlen("low")) == 0)
|
|
|
|
rdev->pm.profile = PM_PROFILE_LOW;
|
2010-06-02 15:56:01 -06:00
|
|
|
else if (strncmp("mid", buf, strlen("mid")) == 0)
|
|
|
|
rdev->pm.profile = PM_PROFILE_MID;
|
2010-05-07 13:10:16 -06:00
|
|
|
else if (strncmp("high", buf, strlen("high")) == 0)
|
|
|
|
rdev->pm.profile = PM_PROFILE_HIGH;
|
|
|
|
else {
|
2011-03-23 09:14:09 -06:00
|
|
|
count = -EINVAL;
|
2010-05-07 13:10:16 -06:00
|
|
|
goto fail;
|
2010-04-24 12:50:23 -06:00
|
|
|
}
|
2010-05-07 13:10:16 -06:00
|
|
|
radeon_pm_update_profile(rdev);
|
|
|
|
radeon_pm_set_clocks(rdev);
|
2011-03-23 09:14:09 -06:00
|
|
|
} else
|
|
|
|
count = -EINVAL;
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
fail:
|
2010-04-24 12:50:23 -06:00
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static ssize_t radeon_get_pm_method(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
2010-04-24 12:50:23 -06:00
|
|
|
{
|
|
|
|
struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
|
|
|
|
struct radeon_device *rdev = ddev->dev_private;
|
2010-05-07 13:10:16 -06:00
|
|
|
int pm = rdev->pm.pm_method;
|
2010-04-24 12:50:23 -06:00
|
|
|
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%s\n",
|
2010-05-07 13:10:16 -06:00
|
|
|
(pm == PM_METHOD_DYNPM) ? "dynpm" : "profile");
|
2010-04-24 12:50:23 -06:00
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static ssize_t radeon_set_pm_method(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
const char *buf,
|
|
|
|
size_t count)
|
2010-04-24 12:50:23 -06:00
|
|
|
{
|
|
|
|
struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
|
|
|
|
struct radeon_device *rdev = ddev->dev_private;
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
|
|
|
|
if (strncmp("dynpm", buf, strlen("dynpm")) == 0) {
|
2010-04-24 12:50:23 -06:00
|
|
|
mutex_lock(&rdev->pm.mutex);
|
2010-05-07 13:10:16 -06:00
|
|
|
rdev->pm.pm_method = PM_METHOD_DYNPM;
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
|
2010-04-24 12:50:23 -06:00
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
2010-05-07 13:10:16 -06:00
|
|
|
} else if (strncmp("profile", buf, strlen("profile")) == 0) {
|
|
|
|
mutex_lock(&rdev->pm.mutex);
|
|
|
|
/* disable dynpm */
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
|
DRM / radeon / KMS: Fix hibernation regression related to radeon PM (was: Re: [Regression, post-2.6.34] Hibernation broken on machines with radeon/KMS and r300)
There is a regression from 2.6.34 related to the recent radeon power
management changes, caused by attempting to cancel a delayed work
item that's never been scheduled. However, the code as is has some
other issues potentially leading to visible problems.
First, the mutex around cancel_delayed_work() in radeon_pm_suspend()
doesn't really serve any purpose, because cancel_delayed_work() only
tries to delete the work's timer. Moreover, it doesn't prevent the
work handler from running, so the handler can do some wrong things if
it wins the race and in that case it will rearm itself to do some
more wrong things going forward. So, I think it's better to wait for
the handler to return in case it's already been queued up for
execution. Also, it should be prevented from rearming itself in that
case.
Second, in radeon_set_pm_method() the cancel_delayed_work() is not
sufficient to prevent the work handler from running and queing up
itself for the next run (the failure scenario is that
cancel_delayed_work() returns 0, so the handler is run, it waits on
the mutex and then rearms itself after the mutex has been released),
so again the work handler should be prevented from rearming itself in
that case..
Finally, there's a potential deadlock in radeon_pm_fini(), because
cancel_delayed_work_sync() is called under rdev->pm.mutex, but the
work handler tries to acquire the same mutex (if it wins the race).
Fix the issues described above.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-17 17:02:27 -06:00
|
|
|
rdev->pm.pm_method = PM_METHOD_PROFILE;
|
2010-05-07 13:10:16 -06:00
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
2011-01-03 06:49:32 -07:00
|
|
|
cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
|
2010-05-07 13:10:16 -06:00
|
|
|
} else {
|
2011-03-23 09:14:09 -06:00
|
|
|
count = -EINVAL;
|
2010-05-07 13:10:16 -06:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
radeon_pm_compute_clocks(rdev);
|
|
|
|
fail:
|
2010-04-24 12:50:23 -06:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile);
|
|
|
|
static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method);
|
2010-04-24 12:50:23 -06:00
|
|
|
|
2010-07-02 10:58:16 -06:00
|
|
|
static ssize_t radeon_hwmon_show_temp(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
|
|
|
|
struct radeon_device *rdev = ddev->dev_private;
|
2011-02-01 14:12:34 -07:00
|
|
|
int temp;
|
2010-07-02 10:58:16 -06:00
|
|
|
|
|
|
|
switch (rdev->pm.int_thermal_type) {
|
|
|
|
case THERMAL_TYPE_RV6XX:
|
|
|
|
temp = rv6xx_get_temp(rdev);
|
|
|
|
break;
|
|
|
|
case THERMAL_TYPE_RV770:
|
|
|
|
temp = rv770_get_temp(rdev);
|
|
|
|
break;
|
|
|
|
case THERMAL_TYPE_EVERGREEN:
|
2011-01-06 19:19:22 -07:00
|
|
|
case THERMAL_TYPE_NI:
|
2010-07-02 10:58:16 -06:00
|
|
|
temp = evergreen_get_temp(rdev);
|
|
|
|
break;
|
2010-11-22 15:56:32 -07:00
|
|
|
case THERMAL_TYPE_SUMO:
|
|
|
|
temp = sumo_get_temp(rdev);
|
|
|
|
break;
|
2012-03-20 15:18:10 -06:00
|
|
|
case THERMAL_TYPE_SI:
|
|
|
|
temp = si_get_temp(rdev);
|
|
|
|
break;
|
2010-07-02 10:58:16 -06:00
|
|
|
default:
|
|
|
|
temp = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", temp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t radeon_hwmon_show_name(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
return sprintf(buf, "radeon\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, radeon_hwmon_show_temp, NULL, 0);
|
|
|
|
static SENSOR_DEVICE_ATTR(name, S_IRUGO, radeon_hwmon_show_name, NULL, 0);
|
|
|
|
|
|
|
|
static struct attribute *hwmon_attributes[] = {
|
|
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_name.dev_attr.attr,
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct attribute_group hwmon_attrgroup = {
|
|
|
|
.attrs = hwmon_attributes,
|
|
|
|
};
|
|
|
|
|
2010-08-09 13:59:42 -06:00
|
|
|
static int radeon_hwmon_init(struct radeon_device *rdev)
|
2010-07-02 10:58:16 -06:00
|
|
|
{
|
2010-08-09 13:59:42 -06:00
|
|
|
int err = 0;
|
2010-07-02 10:58:16 -06:00
|
|
|
|
|
|
|
rdev->pm.int_hwmon_dev = NULL;
|
|
|
|
|
|
|
|
switch (rdev->pm.int_thermal_type) {
|
|
|
|
case THERMAL_TYPE_RV6XX:
|
|
|
|
case THERMAL_TYPE_RV770:
|
|
|
|
case THERMAL_TYPE_EVERGREEN:
|
2011-05-25 15:49:54 -06:00
|
|
|
case THERMAL_TYPE_NI:
|
2010-11-22 15:56:32 -07:00
|
|
|
case THERMAL_TYPE_SUMO:
|
2012-03-20 15:18:10 -06:00
|
|
|
case THERMAL_TYPE_SI:
|
2012-03-20 15:18:29 -06:00
|
|
|
/* No support for TN yet */
|
|
|
|
if (rdev->family == CHIP_ARUBA)
|
|
|
|
return err;
|
2010-07-02 10:58:16 -06:00
|
|
|
rdev->pm.int_hwmon_dev = hwmon_device_register(rdev->dev);
|
2010-08-09 13:59:42 -06:00
|
|
|
if (IS_ERR(rdev->pm.int_hwmon_dev)) {
|
|
|
|
err = PTR_ERR(rdev->pm.int_hwmon_dev);
|
|
|
|
dev_err(rdev->dev,
|
|
|
|
"Unable to register hwmon device: %d\n", err);
|
|
|
|
break;
|
|
|
|
}
|
2010-07-02 10:58:16 -06:00
|
|
|
dev_set_drvdata(rdev->pm.int_hwmon_dev, rdev->ddev);
|
|
|
|
err = sysfs_create_group(&rdev->pm.int_hwmon_dev->kobj,
|
|
|
|
&hwmon_attrgroup);
|
2010-08-09 13:59:42 -06:00
|
|
|
if (err) {
|
|
|
|
dev_err(rdev->dev,
|
|
|
|
"Unable to create hwmon sysfs file: %d\n", err);
|
|
|
|
hwmon_device_unregister(rdev->dev);
|
|
|
|
}
|
2010-07-02 10:58:16 -06:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
2010-08-09 13:59:42 -06:00
|
|
|
|
|
|
|
return err;
|
2010-07-02 10:58:16 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void radeon_hwmon_fini(struct radeon_device *rdev)
|
|
|
|
{
|
|
|
|
if (rdev->pm.int_hwmon_dev) {
|
|
|
|
sysfs_remove_group(&rdev->pm.int_hwmon_dev->kobj, &hwmon_attrgroup);
|
|
|
|
hwmon_device_unregister(rdev->pm.int_hwmon_dev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
void radeon_pm_suspend(struct radeon_device *rdev)
|
2009-12-28 11:58:44 -07:00
|
|
|
{
|
2010-05-07 13:10:16 -06:00
|
|
|
mutex_lock(&rdev->pm.mutex);
|
DRM / radeon / KMS: Fix hibernation regression related to radeon PM (was: Re: [Regression, post-2.6.34] Hibernation broken on machines with radeon/KMS and r300)
There is a regression from 2.6.34 related to the recent radeon power
management changes, caused by attempting to cancel a delayed work
item that's never been scheduled. However, the code as is has some
other issues potentially leading to visible problems.
First, the mutex around cancel_delayed_work() in radeon_pm_suspend()
doesn't really serve any purpose, because cancel_delayed_work() only
tries to delete the work's timer. Moreover, it doesn't prevent the
work handler from running, so the handler can do some wrong things if
it wins the race and in that case it will rearm itself to do some
more wrong things going forward. So, I think it's better to wait for
the handler to return in case it's already been queued up for
execution. Also, it should be prevented from rearming itself in that
case.
Second, in radeon_set_pm_method() the cancel_delayed_work() is not
sufficient to prevent the work handler from running and queing up
itself for the next run (the failure scenario is that
cancel_delayed_work() returns 0, so the handler is run, it waits on
the mutex and then rearms itself after the mutex has been released),
so again the work handler should be prevented from rearming itself in
that case..
Finally, there's a potential deadlock in radeon_pm_fini(), because
cancel_delayed_work_sync() is called under rdev->pm.mutex, but the
work handler tries to acquire the same mutex (if it wins the race).
Fix the issues described above.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-17 17:02:27 -06:00
|
|
|
if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
|
|
|
|
if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE)
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_SUSPENDED;
|
|
|
|
}
|
2010-05-07 13:10:16 -06:00
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
2011-01-03 06:49:32 -07:00
|
|
|
|
|
|
|
cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
|
2009-12-28 11:58:44 -07:00
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
void radeon_pm_resume(struct radeon_device *rdev)
|
2010-03-02 14:06:52 -07:00
|
|
|
{
|
2011-01-06 19:19:32 -07:00
|
|
|
/* set up the default clocks if the MC ucode is loaded */
|
2012-09-14 08:59:26 -06:00
|
|
|
if ((rdev->family >= CHIP_BARTS) &&
|
|
|
|
(rdev->family <= CHIP_CAYMAN) &&
|
|
|
|
rdev->mc_fw) {
|
2011-01-06 19:19:32 -07:00
|
|
|
if (rdev->pm.default_vddc)
|
2011-04-12 12:49:23 -06:00
|
|
|
radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
|
|
|
|
SET_VOLTAGE_TYPE_ASIC_VDDC);
|
2011-04-12 12:49:24 -06:00
|
|
|
if (rdev->pm.default_vddci)
|
|
|
|
radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
|
|
|
|
SET_VOLTAGE_TYPE_ASIC_VDDCI);
|
2011-01-06 19:19:32 -07:00
|
|
|
if (rdev->pm.default_sclk)
|
|
|
|
radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
|
|
|
|
if (rdev->pm.default_mclk)
|
|
|
|
radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
|
|
|
|
}
|
2010-06-07 15:49:51 -06:00
|
|
|
/* asic init will reset the default power state */
|
|
|
|
mutex_lock(&rdev->pm.mutex);
|
|
|
|
rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
|
|
|
|
rdev->pm.current_clock_mode_index = 0;
|
2011-01-06 19:19:26 -07:00
|
|
|
rdev->pm.current_sclk = rdev->pm.default_sclk;
|
|
|
|
rdev->pm.current_mclk = rdev->pm.default_mclk;
|
2010-06-07 16:15:18 -06:00
|
|
|
rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage;
|
2011-04-12 12:49:24 -06:00
|
|
|
rdev->pm.current_vddci = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.vddci;
|
DRM / radeon / KMS: Fix hibernation regression related to radeon PM (was: Re: [Regression, post-2.6.34] Hibernation broken on machines with radeon/KMS and r300)
There is a regression from 2.6.34 related to the recent radeon power
management changes, caused by attempting to cancel a delayed work
item that's never been scheduled. However, the code as is has some
other issues potentially leading to visible problems.
First, the mutex around cancel_delayed_work() in radeon_pm_suspend()
doesn't really serve any purpose, because cancel_delayed_work() only
tries to delete the work's timer. Moreover, it doesn't prevent the
work handler from running, so the handler can do some wrong things if
it wins the race and in that case it will rearm itself to do some
more wrong things going forward. So, I think it's better to wait for
the handler to return in case it's already been queued up for
execution. Also, it should be prevented from rearming itself in that
case.
Second, in radeon_set_pm_method() the cancel_delayed_work() is not
sufficient to prevent the work handler from running and queing up
itself for the next run (the failure scenario is that
cancel_delayed_work() returns 0, so the handler is run, it waits on
the mutex and then rearms itself after the mutex has been released),
so again the work handler should be prevented from rearming itself in
that case..
Finally, there's a potential deadlock in radeon_pm_fini(), because
cancel_delayed_work_sync() is called under rdev->pm.mutex, but the
work handler tries to acquire the same mutex (if it wins the race).
Fix the issues described above.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-17 17:02:27 -06:00
|
|
|
if (rdev->pm.pm_method == PM_METHOD_DYNPM
|
|
|
|
&& rdev->pm.dynpm_state == DYNPM_STATE_SUSPENDED) {
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
|
2011-01-03 06:49:32 -07:00
|
|
|
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
|
|
|
|
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
|
DRM / radeon / KMS: Fix hibernation regression related to radeon PM (was: Re: [Regression, post-2.6.34] Hibernation broken on machines with radeon/KMS and r300)
There is a regression from 2.6.34 related to the recent radeon power
management changes, caused by attempting to cancel a delayed work
item that's never been scheduled. However, the code as is has some
other issues potentially leading to visible problems.
First, the mutex around cancel_delayed_work() in radeon_pm_suspend()
doesn't really serve any purpose, because cancel_delayed_work() only
tries to delete the work's timer. Moreover, it doesn't prevent the
work handler from running, so the handler can do some wrong things if
it wins the race and in that case it will rearm itself to do some
more wrong things going forward. So, I think it's better to wait for
the handler to return in case it's already been queued up for
execution. Also, it should be prevented from rearming itself in that
case.
Second, in radeon_set_pm_method() the cancel_delayed_work() is not
sufficient to prevent the work handler from running and queing up
itself for the next run (the failure scenario is that
cancel_delayed_work() returns 0, so the handler is run, it waits on
the mutex and then rearms itself after the mutex has been released),
so again the work handler should be prevented from rearming itself in
that case..
Finally, there's a potential deadlock in radeon_pm_fini(), because
cancel_delayed_work_sync() is called under rdev->pm.mutex, but the
work handler tries to acquire the same mutex (if it wins the race).
Fix the issues described above.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-17 17:02:27 -06:00
|
|
|
}
|
2010-06-07 15:49:51 -06:00
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
2010-05-07 13:10:16 -06:00
|
|
|
radeon_pm_compute_clocks(rdev);
|
2010-03-02 14:06:52 -07:00
|
|
|
}
|
|
|
|
|
2009-11-02 16:53:02 -07:00
|
|
|
int radeon_pm_init(struct radeon_device *rdev)
|
|
|
|
{
|
2010-05-18 03:00:14 -06:00
|
|
|
int ret;
|
2010-08-09 13:59:42 -06:00
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
/* default to profile method */
|
|
|
|
rdev->pm.pm_method = PM_METHOD_PROFILE;
|
2010-06-07 15:49:51 -06:00
|
|
|
rdev->pm.profile = PM_PROFILE_DEFAULT;
|
2010-05-07 13:10:16 -06:00
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
|
|
|
|
rdev->pm.dynpm_can_upclock = true;
|
|
|
|
rdev->pm.dynpm_can_downclock = true;
|
2011-01-06 19:19:26 -07:00
|
|
|
rdev->pm.default_sclk = rdev->clock.default_sclk;
|
|
|
|
rdev->pm.default_mclk = rdev->clock.default_mclk;
|
2010-06-07 15:49:51 -06:00
|
|
|
rdev->pm.current_sclk = rdev->clock.default_sclk;
|
|
|
|
rdev->pm.current_mclk = rdev->clock.default_mclk;
|
2010-07-02 10:58:16 -06:00
|
|
|
rdev->pm.int_thermal_type = THERMAL_TYPE_NONE;
|
2009-12-22 15:02:16 -07:00
|
|
|
|
2009-12-28 11:58:44 -07:00
|
|
|
if (rdev->bios) {
|
|
|
|
if (rdev->is_atom_bios)
|
|
|
|
radeon_atombios_get_power_modes(rdev);
|
|
|
|
else
|
|
|
|
radeon_combios_get_power_modes(rdev);
|
2010-06-07 16:29:44 -06:00
|
|
|
radeon_pm_print_states(rdev);
|
2010-05-07 13:10:16 -06:00
|
|
|
radeon_pm_init_profile(rdev);
|
2011-01-06 19:19:32 -07:00
|
|
|
/* set up the default clocks if the MC ucode is loaded */
|
2012-09-14 08:59:26 -06:00
|
|
|
if ((rdev->family >= CHIP_BARTS) &&
|
|
|
|
(rdev->family <= CHIP_CAYMAN) &&
|
|
|
|
rdev->mc_fw) {
|
2011-01-06 19:19:32 -07:00
|
|
|
if (rdev->pm.default_vddc)
|
2011-04-12 12:49:23 -06:00
|
|
|
radeon_atom_set_voltage(rdev, rdev->pm.default_vddc,
|
|
|
|
SET_VOLTAGE_TYPE_ASIC_VDDC);
|
2011-07-25 16:50:08 -06:00
|
|
|
if (rdev->pm.default_vddci)
|
|
|
|
radeon_atom_set_voltage(rdev, rdev->pm.default_vddci,
|
|
|
|
SET_VOLTAGE_TYPE_ASIC_VDDCI);
|
2011-01-06 19:19:32 -07:00
|
|
|
if (rdev->pm.default_sclk)
|
|
|
|
radeon_set_engine_clock(rdev, rdev->pm.default_sclk);
|
|
|
|
if (rdev->pm.default_mclk)
|
|
|
|
radeon_set_memory_clock(rdev, rdev->pm.default_mclk);
|
|
|
|
}
|
2009-12-28 11:58:44 -07:00
|
|
|
}
|
|
|
|
|
2010-07-02 10:58:16 -06:00
|
|
|
/* set up the internal thermal sensor if applicable */
|
2010-08-09 13:59:42 -06:00
|
|
|
ret = radeon_hwmon_init(rdev);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
2011-01-03 06:49:32 -07:00
|
|
|
|
|
|
|
INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.num_power_states > 1) {
|
|
|
|
/* where's the best place to put these? */
|
2010-05-18 03:00:14 -06:00
|
|
|
ret = device_create_file(rdev->dev, &dev_attr_power_profile);
|
|
|
|
if (ret)
|
|
|
|
DRM_ERROR("failed to create device file for power profile\n");
|
|
|
|
ret = device_create_file(rdev->dev, &dev_attr_power_method);
|
|
|
|
if (ret)
|
|
|
|
DRM_ERROR("failed to create device file for power method\n");
|
2010-04-24 12:50:23 -06:00
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
if (radeon_debugfs_pm_init(rdev)) {
|
|
|
|
DRM_ERROR("Failed to register debugfs file for PM!\n");
|
|
|
|
}
|
2009-12-22 15:02:16 -07:00
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
DRM_INFO("radeon: power management initialized\n");
|
|
|
|
}
|
2009-12-22 15:02:16 -07:00
|
|
|
|
2009-11-02 16:53:02 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-03-11 08:01:17 -07:00
|
|
|
void radeon_pm_fini(struct radeon_device *rdev)
|
|
|
|
{
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.num_power_states > 1) {
|
2010-04-24 12:50:23 -06:00
|
|
|
mutex_lock(&rdev->pm.mutex);
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
|
|
|
|
rdev->pm.profile = PM_PROFILE_DEFAULT;
|
|
|
|
radeon_pm_update_profile(rdev);
|
|
|
|
radeon_pm_set_clocks(rdev);
|
|
|
|
} else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
|
|
|
|
/* reset default clocks */
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_DISABLED;
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
|
|
|
|
radeon_pm_set_clocks(rdev);
|
|
|
|
}
|
2010-04-24 12:50:23 -06:00
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
2011-01-03 06:49:32 -07:00
|
|
|
|
|
|
|
cancel_delayed_work_sync(&rdev->pm.dynpm_idle_work);
|
2010-03-22 11:31:08 -06:00
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
device_remove_file(rdev->dev, &dev_attr_power_profile);
|
|
|
|
device_remove_file(rdev->dev, &dev_attr_power_method);
|
|
|
|
}
|
2010-04-24 12:50:23 -06:00
|
|
|
|
2011-02-02 16:42:03 -07:00
|
|
|
if (rdev->pm.power_state)
|
|
|
|
kfree(rdev->pm.power_state);
|
|
|
|
|
2010-07-02 10:58:16 -06:00
|
|
|
radeon_hwmon_fini(rdev);
|
2010-03-11 08:01:17 -07:00
|
|
|
}
|
|
|
|
|
2009-12-22 15:02:16 -07:00
|
|
|
void radeon_pm_compute_clocks(struct radeon_device *rdev)
|
|
|
|
{
|
|
|
|
struct drm_device *ddev = rdev->ddev;
|
2010-04-22 12:03:55 -06:00
|
|
|
struct drm_crtc *crtc;
|
2009-12-22 15:02:16 -07:00
|
|
|
struct radeon_crtc *radeon_crtc;
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.num_power_states < 2)
|
|
|
|
return;
|
|
|
|
|
2009-12-22 15:02:16 -07:00
|
|
|
mutex_lock(&rdev->pm.mutex);
|
|
|
|
|
|
|
|
rdev->pm.active_crtcs = 0;
|
2010-04-22 12:03:55 -06:00
|
|
|
rdev->pm.active_crtc_count = 0;
|
|
|
|
list_for_each_entry(crtc,
|
|
|
|
&ddev->mode_config.crtc_list, head) {
|
|
|
|
radeon_crtc = to_radeon_crtc(crtc);
|
|
|
|
if (radeon_crtc->enabled) {
|
2009-12-22 15:02:16 -07:00
|
|
|
rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
|
2010-04-22 12:03:55 -06:00
|
|
|
rdev->pm.active_crtc_count++;
|
2009-12-22 15:02:16 -07:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.pm_method == PM_METHOD_PROFILE) {
|
|
|
|
radeon_pm_update_profile(rdev);
|
|
|
|
radeon_pm_set_clocks(rdev);
|
|
|
|
} else if (rdev->pm.pm_method == PM_METHOD_DYNPM) {
|
|
|
|
if (rdev->pm.dynpm_state != DYNPM_STATE_DISABLED) {
|
|
|
|
if (rdev->pm.active_crtc_count > 1) {
|
|
|
|
if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
|
|
|
|
cancel_delayed_work(&rdev->pm.dynpm_idle_work);
|
|
|
|
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_PAUSED;
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_DEFAULT;
|
|
|
|
radeon_pm_get_dynpm_state(rdev);
|
|
|
|
radeon_pm_set_clocks(rdev);
|
|
|
|
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("radeon: dynamic power management deactivated\n");
|
2010-05-07 13:10:16 -06:00
|
|
|
}
|
|
|
|
} else if (rdev->pm.active_crtc_count == 1) {
|
|
|
|
/* TODO: Increase clocks if needed for current mode */
|
|
|
|
|
|
|
|
if (rdev->pm.dynpm_state == DYNPM_STATE_MINIMUM) {
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_UPCLOCK;
|
|
|
|
radeon_pm_get_dynpm_state(rdev);
|
|
|
|
radeon_pm_set_clocks(rdev);
|
|
|
|
|
2011-01-03 06:49:32 -07:00
|
|
|
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
|
|
|
|
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
|
2010-05-07 13:10:16 -06:00
|
|
|
} else if (rdev->pm.dynpm_state == DYNPM_STATE_PAUSED) {
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_ACTIVE;
|
2011-01-03 06:49:32 -07:00
|
|
|
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
|
|
|
|
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("radeon: dynamic power management activated\n");
|
2010-05-07 13:10:16 -06:00
|
|
|
}
|
|
|
|
} else { /* count == 0 */
|
|
|
|
if (rdev->pm.dynpm_state != DYNPM_STATE_MINIMUM) {
|
|
|
|
cancel_delayed_work(&rdev->pm.dynpm_idle_work);
|
|
|
|
|
|
|
|
rdev->pm.dynpm_state = DYNPM_STATE_MINIMUM;
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_MINIMUM;
|
|
|
|
radeon_pm_get_dynpm_state(rdev);
|
|
|
|
radeon_pm_set_clocks(rdev);
|
|
|
|
}
|
|
|
|
}
|
2009-12-22 15:02:16 -07:00
|
|
|
}
|
|
|
|
}
|
2010-01-07 16:22:47 -07:00
|
|
|
|
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
2009-12-22 15:02:16 -07:00
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static bool radeon_pm_in_vbl(struct radeon_device *rdev)
|
2010-02-17 22:58:36 -07:00
|
|
|
{
|
2010-10-05 17:57:37 -06:00
|
|
|
int crtc, vpos, hpos, vbl_status;
|
2010-02-17 22:58:36 -07:00
|
|
|
bool in_vbl = true;
|
|
|
|
|
2010-10-05 17:57:37 -06:00
|
|
|
/* Iterate over all active crtc's. All crtc's must be in vblank,
|
|
|
|
* otherwise return in_vbl == false.
|
|
|
|
*/
|
|
|
|
for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) {
|
|
|
|
if (rdev->pm.active_crtcs & (1 << crtc)) {
|
2010-10-22 20:42:17 -06:00
|
|
|
vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev, crtc, &vpos, &hpos);
|
|
|
|
if ((vbl_status & DRM_SCANOUTPOS_VALID) &&
|
|
|
|
!(vbl_status & DRM_SCANOUTPOS_INVBL))
|
2010-02-17 22:58:36 -07:00
|
|
|
in_vbl = false;
|
|
|
|
}
|
|
|
|
}
|
2010-04-28 10:13:06 -06:00
|
|
|
|
|
|
|
return in_vbl;
|
|
|
|
}
|
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
|
2010-04-28 10:13:06 -06:00
|
|
|
{
|
|
|
|
u32 stat_crtc = 0;
|
|
|
|
bool in_vbl = radeon_pm_in_vbl(rdev);
|
|
|
|
|
2010-02-17 22:58:36 -07:00
|
|
|
if (in_vbl == false)
|
2010-08-01 18:42:55 -06:00
|
|
|
DRM_DEBUG_DRIVER("not in vbl for pm change %08x at %s\n", stat_crtc,
|
2010-04-22 11:38:05 -06:00
|
|
|
finish ? "exit" : "entry");
|
2010-02-17 22:58:36 -07:00
|
|
|
return in_vbl;
|
|
|
|
}
|
2009-12-22 15:02:16 -07:00
|
|
|
|
2010-05-07 13:10:16 -06:00
|
|
|
static void radeon_dynpm_idle_work_handler(struct work_struct *work)
|
2009-12-22 15:02:16 -07:00
|
|
|
{
|
|
|
|
struct radeon_device *rdev;
|
2010-04-26 14:02:26 -06:00
|
|
|
int resched;
|
2009-12-22 15:02:16 -07:00
|
|
|
rdev = container_of(work, struct radeon_device,
|
2010-05-07 13:10:16 -06:00
|
|
|
pm.dynpm_idle_work.work);
|
2009-12-22 15:02:16 -07:00
|
|
|
|
2010-04-26 14:02:26 -06:00
|
|
|
resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
|
2009-12-22 15:02:16 -07:00
|
|
|
mutex_lock(&rdev->pm.mutex);
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.dynpm_state == DYNPM_STATE_ACTIVE) {
|
2009-12-22 15:02:16 -07:00
|
|
|
int not_processed = 0;
|
2011-08-25 11:39:48 -06:00
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < RADEON_NUM_RINGS; ++i) {
|
2012-06-14 13:54:57 -06:00
|
|
|
struct radeon_ring *ring = &rdev->ring[i];
|
|
|
|
|
|
|
|
if (ring->ready) {
|
|
|
|
not_processed += radeon_fence_count_emitted(rdev, i);
|
|
|
|
if (not_processed >= 3)
|
|
|
|
break;
|
|
|
|
}
|
2009-12-22 15:02:16 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
if (not_processed >= 3) { /* should upclock */
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_DOWNCLOCK) {
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
|
|
|
|
} else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
|
|
|
|
rdev->pm.dynpm_can_upclock) {
|
|
|
|
rdev->pm.dynpm_planned_action =
|
|
|
|
DYNPM_ACTION_UPCLOCK;
|
|
|
|
rdev->pm.dynpm_action_timeout = jiffies +
|
2009-12-22 15:02:16 -07:00
|
|
|
msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
|
|
|
|
}
|
|
|
|
} else if (not_processed == 0) { /* should downclock */
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_UPCLOCK) {
|
|
|
|
rdev->pm.dynpm_planned_action = DYNPM_ACTION_NONE;
|
|
|
|
} else if (rdev->pm.dynpm_planned_action == DYNPM_ACTION_NONE &&
|
|
|
|
rdev->pm.dynpm_can_downclock) {
|
|
|
|
rdev->pm.dynpm_planned_action =
|
|
|
|
DYNPM_ACTION_DOWNCLOCK;
|
|
|
|
rdev->pm.dynpm_action_timeout = jiffies +
|
2009-12-22 15:02:16 -07:00
|
|
|
msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-02 23:13:14 -06:00
|
|
|
/* Note, radeon_pm_set_clocks is called with static_switch set
|
|
|
|
* to false since we want to wait for vbl to avoid flicker.
|
|
|
|
*/
|
2010-05-07 13:10:16 -06:00
|
|
|
if (rdev->pm.dynpm_planned_action != DYNPM_ACTION_NONE &&
|
|
|
|
jiffies > rdev->pm.dynpm_action_timeout) {
|
|
|
|
radeon_pm_get_dynpm_state(rdev);
|
|
|
|
radeon_pm_set_clocks(rdev);
|
2009-12-22 15:02:16 -07:00
|
|
|
}
|
DRM / radeon / KMS: Fix hibernation regression related to radeon PM (was: Re: [Regression, post-2.6.34] Hibernation broken on machines with radeon/KMS and r300)
There is a regression from 2.6.34 related to the recent radeon power
management changes, caused by attempting to cancel a delayed work
item that's never been scheduled. However, the code as is has some
other issues potentially leading to visible problems.
First, the mutex around cancel_delayed_work() in radeon_pm_suspend()
doesn't really serve any purpose, because cancel_delayed_work() only
tries to delete the work's timer. Moreover, it doesn't prevent the
work handler from running, so the handler can do some wrong things if
it wins the race and in that case it will rearm itself to do some
more wrong things going forward. So, I think it's better to wait for
the handler to return in case it's already been queued up for
execution. Also, it should be prevented from rearming itself in that
case.
Second, in radeon_set_pm_method() the cancel_delayed_work() is not
sufficient to prevent the work handler from running and queing up
itself for the next run (the failure scenario is that
cancel_delayed_work() returns 0, so the handler is run, it waits on
the mutex and then rearms itself after the mutex has been released),
so again the work handler should be prevented from rearming itself in
that case..
Finally, there's a potential deadlock in radeon_pm_fini(), because
cancel_delayed_work_sync() is called under rdev->pm.mutex, but the
work handler tries to acquire the same mutex (if it wins the race).
Fix the issues described above.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-17 17:02:27 -06:00
|
|
|
|
2011-01-03 06:49:32 -07:00
|
|
|
schedule_delayed_work(&rdev->pm.dynpm_idle_work,
|
|
|
|
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
|
2009-12-22 15:02:16 -07:00
|
|
|
}
|
|
|
|
mutex_unlock(&rdev->pm.mutex);
|
2010-04-26 14:02:26 -06:00
|
|
|
ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
|
2009-12-22 15:02:16 -07:00
|
|
|
}
|
|
|
|
|
2009-11-02 16:53:02 -07:00
|
|
|
/*
|
|
|
|
* Debugfs info
|
|
|
|
*/
|
|
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
|
|
|
|
|
|
static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
|
|
|
|
{
|
|
|
|
struct drm_info_node *node = (struct drm_info_node *) m->private;
|
|
|
|
struct drm_device *dev = node->minor->dev;
|
|
|
|
struct radeon_device *rdev = dev->dev_private;
|
|
|
|
|
2011-01-06 19:19:26 -07:00
|
|
|
seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
|
2009-12-15 13:46:58 -07:00
|
|
|
seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
|
2011-01-06 19:19:26 -07:00
|
|
|
seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
|
2012-02-23 15:53:48 -07:00
|
|
|
if (rdev->asic->pm.get_memory_clock)
|
2009-12-15 13:46:58 -07:00
|
|
|
seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
|
2010-06-07 16:25:21 -06:00
|
|
|
if (rdev->pm.current_vddc)
|
|
|
|
seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
|
2012-02-23 15:53:48 -07:00
|
|
|
if (rdev->asic->pm.get_pcie_lanes)
|
2010-02-18 13:24:28 -07:00
|
|
|
seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
|
2009-11-02 16:53:02 -07:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct drm_info_list radeon_pm_info_list[] = {
|
|
|
|
{"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
|
|
|
|
};
|
|
|
|
#endif
|
|
|
|
|
2009-12-22 15:02:16 -07:00
|
|
|
static int radeon_debugfs_pm_init(struct radeon_device *rdev)
|
2009-11-02 16:53:02 -07:00
|
|
|
{
|
|
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
|
|
return radeon_debugfs_add_files(rdev, radeon_pm_info_list, ARRAY_SIZE(radeon_pm_info_list));
|
|
|
|
#else
|
|
|
|
return 0;
|
|
|
|
#endif
|
|
|
|
}
|