forked from Minki/linux
c37d230af4
We need to choose the correct PM state to transition into before starting the actual change. Call radeon_get_power_state() at the top of the clock setting to do so. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
559 lines
16 KiB
C
559 lines
16 KiB
C
/*
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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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* Alex Deucher <alexdeucher@gmail.com>
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*/
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#include "drmP.h"
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#include "radeon.h"
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#include "avivod.h"
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#define RADEON_IDLE_LOOP_MS 100
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#define RADEON_RECLOCK_DELAY_MS 200
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#define RADEON_WAIT_VBLANK_TIMEOUT 200
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#define RADEON_WAIT_IDLE_TIMEOUT 200
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static void radeon_pm_idle_work_handler(struct work_struct *work);
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static int radeon_debugfs_pm_init(struct radeon_device *rdev);
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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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if (rdev->gart.table.vram.robj)
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ttm_bo_unmap_virtual(&rdev->gart.table.vram.robj->tbo);
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if (rdev->stollen_vga_memory)
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ttm_bo_unmap_virtual(&rdev->stollen_vga_memory->tbo);
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if (rdev->r600_blit.shader_obj)
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ttm_bo_unmap_virtual(&rdev->r600_blit.shader_obj->tbo);
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}
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static void radeon_pm_set_clocks(struct radeon_device *rdev, int static_switch)
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{
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int i;
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if (!static_switch)
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radeon_get_power_state(rdev, rdev->pm.planned_action);
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mutex_lock(&rdev->cp.mutex);
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/* wait for GPU idle */
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rdev->pm.gui_idle = false;
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rdev->irq.gui_idle = true;
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radeon_irq_set(rdev);
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wait_event_interruptible_timeout(
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rdev->irq.idle_queue, rdev->pm.gui_idle,
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msecs_to_jiffies(RADEON_WAIT_IDLE_TIMEOUT));
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rdev->irq.gui_idle = false;
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radeon_irq_set(rdev);
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mutex_lock(&rdev->vram_mutex);
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radeon_unmap_vram_bos(rdev);
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if (!static_switch) {
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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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radeon_set_power_state(rdev, static_switch);
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if (!static_switch) {
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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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}
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}
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mutex_unlock(&rdev->vram_mutex);
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/* update display watermarks based on new power state */
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radeon_update_bandwidth_info(rdev);
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if (rdev->pm.active_crtc_count)
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radeon_bandwidth_update(rdev);
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rdev->pm.planned_action = PM_ACTION_NONE;
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mutex_unlock(&rdev->cp.mutex);
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}
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static ssize_t radeon_get_power_state_static(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
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struct radeon_device *rdev = ddev->dev_private;
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return snprintf(buf, PAGE_SIZE, "%d.%d\n", rdev->pm.current_power_state_index,
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rdev->pm.current_clock_mode_index);
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}
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static ssize_t radeon_set_power_state_static(struct device *dev,
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struct device_attribute *attr,
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const char *buf,
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size_t count)
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{
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struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
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struct radeon_device *rdev = ddev->dev_private;
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int ps, cm;
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if (sscanf(buf, "%u.%u", &ps, &cm) != 2) {
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DRM_ERROR("Invalid power state!\n");
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return count;
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}
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mutex_lock(&rdev->ddev->struct_mutex);
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mutex_lock(&rdev->pm.mutex);
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if ((ps >= 0) && (ps < rdev->pm.num_power_states) &&
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(cm >= 0) && (cm < rdev->pm.power_state[ps].num_clock_modes)) {
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if ((rdev->pm.active_crtc_count > 1) &&
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(rdev->pm.power_state[ps].flags & RADEON_PM_SINGLE_DISPLAY_ONLY)) {
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DRM_ERROR("Invalid power state for multi-head: %d.%d\n", ps, cm);
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} else {
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/* disable dynpm */
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rdev->pm.state = PM_STATE_DISABLED;
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rdev->pm.planned_action = PM_ACTION_NONE;
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rdev->pm.requested_power_state_index = ps;
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rdev->pm.requested_clock_mode_index = cm;
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radeon_pm_set_clocks(rdev, true);
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}
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} else
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DRM_ERROR("Invalid power state: %d.%d\n\n", ps, cm);
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mutex_unlock(&rdev->pm.mutex);
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mutex_unlock(&rdev->ddev->struct_mutex);
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return count;
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}
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static ssize_t radeon_get_dynpm(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
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struct radeon_device *rdev = ddev->dev_private;
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return snprintf(buf, PAGE_SIZE, "%s\n",
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(rdev->pm.state == PM_STATE_DISABLED) ? "disabled" : "enabled");
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}
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static ssize_t radeon_set_dynpm(struct device *dev,
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struct device_attribute *attr,
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const char *buf,
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size_t count)
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{
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struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
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struct radeon_device *rdev = ddev->dev_private;
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int tmp = simple_strtoul(buf, NULL, 10);
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if (tmp == 0) {
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/* update power mode info */
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radeon_pm_compute_clocks(rdev);
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/* disable dynpm */
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mutex_lock(&rdev->pm.mutex);
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rdev->pm.state = PM_STATE_DISABLED;
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rdev->pm.planned_action = PM_ACTION_NONE;
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mutex_unlock(&rdev->pm.mutex);
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DRM_INFO("radeon: dynamic power management disabled\n");
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} else if (tmp == 1) {
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if (rdev->pm.num_power_states > 1) {
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/* enable dynpm */
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mutex_lock(&rdev->ddev->struct_mutex);
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mutex_lock(&rdev->pm.mutex);
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rdev->pm.state = PM_STATE_PAUSED;
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rdev->pm.planned_action = PM_ACTION_DEFAULT;
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radeon_get_power_state(rdev, rdev->pm.planned_action);
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mutex_unlock(&rdev->pm.mutex);
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mutex_unlock(&rdev->ddev->struct_mutex);
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/* update power mode info */
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radeon_pm_compute_clocks(rdev);
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DRM_INFO("radeon: dynamic power management enabled\n");
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} else
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DRM_ERROR("dynpm not valid on this system\n");
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} else
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DRM_ERROR("Invalid setting: %d\n", tmp);
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return count;
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}
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static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR, radeon_get_power_state_static, radeon_set_power_state_static);
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static DEVICE_ATTR(dynpm, S_IRUGO | S_IWUSR, radeon_get_dynpm, radeon_set_dynpm);
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static const char *pm_state_names[4] = {
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"PM_STATE_DISABLED",
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"PM_STATE_MINIMUM",
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"PM_STATE_PAUSED",
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"PM_STATE_ACTIVE"
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};
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static const char *pm_state_types[5] = {
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"",
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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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static void radeon_print_power_mode_info(struct radeon_device *rdev)
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{
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int i, j;
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bool is_default;
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DRM_INFO("%d Power State(s)\n", rdev->pm.num_power_states);
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for (i = 0; i < rdev->pm.num_power_states; i++) {
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if (rdev->pm.default_power_state_index == i)
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is_default = true;
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else
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is_default = false;
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DRM_INFO("State %d %s %s\n", i,
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pm_state_types[rdev->pm.power_state[i].type],
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is_default ? "(default)" : "");
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if ((rdev->flags & RADEON_IS_PCIE) && !(rdev->flags & RADEON_IS_IGP))
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DRM_INFO("\t%d PCIE Lanes\n", rdev->pm.power_state[i].pcie_lanes);
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if (rdev->pm.power_state[i].flags & RADEON_PM_SINGLE_DISPLAY_ONLY)
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DRM_INFO("\tSingle display only\n");
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DRM_INFO("\t%d Clock Mode(s)\n", rdev->pm.power_state[i].num_clock_modes);
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for (j = 0; j < rdev->pm.power_state[i].num_clock_modes; j++) {
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if (rdev->flags & RADEON_IS_IGP)
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DRM_INFO("\t\t%d engine: %d\n",
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j,
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rdev->pm.power_state[i].clock_info[j].sclk * 10);
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else
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DRM_INFO("\t\t%d engine/memory: %d/%d\n",
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j,
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rdev->pm.power_state[i].clock_info[j].sclk * 10,
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rdev->pm.power_state[i].clock_info[j].mclk * 10);
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}
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}
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}
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void radeon_sync_with_vblank(struct radeon_device *rdev)
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{
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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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int radeon_pm_init(struct radeon_device *rdev)
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{
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rdev->pm.state = PM_STATE_DISABLED;
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rdev->pm.planned_action = PM_ACTION_NONE;
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rdev->pm.can_upclock = true;
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rdev->pm.can_downclock = true;
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if (rdev->bios) {
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if (rdev->is_atom_bios)
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radeon_atombios_get_power_modes(rdev);
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else
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radeon_combios_get_power_modes(rdev);
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radeon_print_power_mode_info(rdev);
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}
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if (radeon_debugfs_pm_init(rdev)) {
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DRM_ERROR("Failed to register debugfs file for PM!\n");
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}
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/* where's the best place to put this? */
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device_create_file(rdev->dev, &dev_attr_power_state);
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device_create_file(rdev->dev, &dev_attr_dynpm);
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INIT_DELAYED_WORK(&rdev->pm.idle_work, radeon_pm_idle_work_handler);
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if ((radeon_dynpm != -1 && radeon_dynpm) && (rdev->pm.num_power_states > 1)) {
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rdev->pm.state = PM_STATE_PAUSED;
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DRM_INFO("radeon: dynamic power management enabled\n");
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}
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DRM_INFO("radeon: power management initialized\n");
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return 0;
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}
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void radeon_pm_fini(struct radeon_device *rdev)
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{
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if (rdev->pm.state != PM_STATE_DISABLED) {
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/* cancel work */
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cancel_delayed_work_sync(&rdev->pm.idle_work);
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/* reset default clocks */
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rdev->pm.state = PM_STATE_DISABLED;
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rdev->pm.planned_action = PM_ACTION_DEFAULT;
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radeon_pm_set_clocks(rdev, false);
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} else if ((rdev->pm.current_power_state_index !=
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rdev->pm.default_power_state_index) ||
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(rdev->pm.current_clock_mode_index != 0)) {
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rdev->pm.requested_power_state_index = rdev->pm.default_power_state_index;
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rdev->pm.requested_clock_mode_index = 0;
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mutex_lock(&rdev->ddev->struct_mutex);
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mutex_lock(&rdev->pm.mutex);
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radeon_pm_set_clocks(rdev, true);
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mutex_unlock(&rdev->pm.mutex);
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mutex_unlock(&rdev->ddev->struct_mutex);
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}
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device_remove_file(rdev->dev, &dev_attr_power_state);
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device_remove_file(rdev->dev, &dev_attr_dynpm);
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if (rdev->pm.i2c_bus)
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radeon_i2c_destroy(rdev->pm.i2c_bus);
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}
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void radeon_pm_compute_clocks(struct radeon_device *rdev)
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{
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struct drm_device *ddev = rdev->ddev;
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struct drm_crtc *crtc;
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struct radeon_crtc *radeon_crtc;
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if (rdev->pm.state == PM_STATE_DISABLED)
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return;
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mutex_lock(&rdev->ddev->struct_mutex);
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mutex_lock(&rdev->pm.mutex);
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rdev->pm.active_crtcs = 0;
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rdev->pm.active_crtc_count = 0;
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list_for_each_entry(crtc,
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&ddev->mode_config.crtc_list, head) {
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radeon_crtc = to_radeon_crtc(crtc);
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if (radeon_crtc->enabled) {
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rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
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rdev->pm.active_crtc_count++;
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}
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}
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if (rdev->pm.active_crtc_count > 1) {
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if (rdev->pm.state == PM_STATE_ACTIVE) {
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cancel_delayed_work(&rdev->pm.idle_work);
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rdev->pm.state = PM_STATE_PAUSED;
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rdev->pm.planned_action = PM_ACTION_UPCLOCK;
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radeon_pm_set_clocks(rdev, false);
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DRM_DEBUG("radeon: dynamic power management deactivated\n");
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}
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} else if (rdev->pm.active_crtc_count == 1) {
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/* TODO: Increase clocks if needed for current mode */
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if (rdev->pm.state == PM_STATE_MINIMUM) {
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rdev->pm.state = PM_STATE_ACTIVE;
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rdev->pm.planned_action = PM_ACTION_UPCLOCK;
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radeon_pm_set_clocks(rdev, false);
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queue_delayed_work(rdev->wq, &rdev->pm.idle_work,
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msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
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} else if (rdev->pm.state == PM_STATE_PAUSED) {
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rdev->pm.state = PM_STATE_ACTIVE;
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queue_delayed_work(rdev->wq, &rdev->pm.idle_work,
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msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
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DRM_DEBUG("radeon: dynamic power management activated\n");
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}
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} else { /* count == 0 */
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if (rdev->pm.state != PM_STATE_MINIMUM) {
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cancel_delayed_work(&rdev->pm.idle_work);
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rdev->pm.state = PM_STATE_MINIMUM;
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rdev->pm.planned_action = PM_ACTION_MINIMUM;
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radeon_pm_set_clocks(rdev, false);
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}
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}
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mutex_unlock(&rdev->pm.mutex);
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mutex_unlock(&rdev->ddev->struct_mutex);
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}
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bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
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{
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u32 stat_crtc = 0;
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bool in_vbl = true;
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if (ASIC_IS_DCE4(rdev)) {
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if (rdev->pm.active_crtcs & (1 << 0)) {
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stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC0_REGISTER_OFFSET);
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if (!(stat_crtc & 1))
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in_vbl = false;
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}
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if (rdev->pm.active_crtcs & (1 << 1)) {
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stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC1_REGISTER_OFFSET);
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if (!(stat_crtc & 1))
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in_vbl = false;
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}
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if (rdev->pm.active_crtcs & (1 << 2)) {
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stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC2_REGISTER_OFFSET);
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if (!(stat_crtc & 1))
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in_vbl = false;
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}
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if (rdev->pm.active_crtcs & (1 << 3)) {
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stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC3_REGISTER_OFFSET);
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if (!(stat_crtc & 1))
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in_vbl = false;
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}
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if (rdev->pm.active_crtcs & (1 << 4)) {
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stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC4_REGISTER_OFFSET);
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if (!(stat_crtc & 1))
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in_vbl = false;
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}
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if (rdev->pm.active_crtcs & (1 << 5)) {
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stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC5_REGISTER_OFFSET);
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if (!(stat_crtc & 1))
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in_vbl = false;
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}
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} else if (ASIC_IS_AVIVO(rdev)) {
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if (rdev->pm.active_crtcs & (1 << 0)) {
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stat_crtc = RREG32(D1CRTC_STATUS);
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if (!(stat_crtc & 1))
|
|
in_vbl = false;
|
|
}
|
|
if (rdev->pm.active_crtcs & (1 << 1)) {
|
|
stat_crtc = RREG32(D2CRTC_STATUS);
|
|
if (!(stat_crtc & 1))
|
|
in_vbl = false;
|
|
}
|
|
} else {
|
|
if (rdev->pm.active_crtcs & (1 << 0)) {
|
|
stat_crtc = RREG32(RADEON_CRTC_STATUS);
|
|
if (!(stat_crtc & 1))
|
|
in_vbl = false;
|
|
}
|
|
if (rdev->pm.active_crtcs & (1 << 1)) {
|
|
stat_crtc = RREG32(RADEON_CRTC2_STATUS);
|
|
if (!(stat_crtc & 1))
|
|
in_vbl = false;
|
|
}
|
|
}
|
|
if (in_vbl == false)
|
|
DRM_INFO("not in vbl for pm change %08x at %s\n", stat_crtc,
|
|
finish ? "exit" : "entry");
|
|
return in_vbl;
|
|
}
|
|
|
|
static void radeon_pm_idle_work_handler(struct work_struct *work)
|
|
{
|
|
struct radeon_device *rdev;
|
|
int resched;
|
|
rdev = container_of(work, struct radeon_device,
|
|
pm.idle_work.work);
|
|
|
|
resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
|
|
mutex_lock(&rdev->ddev->struct_mutex);
|
|
mutex_lock(&rdev->pm.mutex);
|
|
if (rdev->pm.state == PM_STATE_ACTIVE) {
|
|
unsigned long irq_flags;
|
|
int not_processed = 0;
|
|
|
|
read_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
|
|
if (!list_empty(&rdev->fence_drv.emited)) {
|
|
struct list_head *ptr;
|
|
list_for_each(ptr, &rdev->fence_drv.emited) {
|
|
/* count up to 3, that's enought info */
|
|
if (++not_processed >= 3)
|
|
break;
|
|
}
|
|
}
|
|
read_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
|
|
|
|
if (not_processed >= 3) { /* should upclock */
|
|
if (rdev->pm.planned_action == PM_ACTION_DOWNCLOCK) {
|
|
rdev->pm.planned_action = PM_ACTION_NONE;
|
|
} else if (rdev->pm.planned_action == PM_ACTION_NONE &&
|
|
rdev->pm.can_upclock) {
|
|
rdev->pm.planned_action =
|
|
PM_ACTION_UPCLOCK;
|
|
rdev->pm.action_timeout = jiffies +
|
|
msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
|
|
}
|
|
} else if (not_processed == 0) { /* should downclock */
|
|
if (rdev->pm.planned_action == PM_ACTION_UPCLOCK) {
|
|
rdev->pm.planned_action = PM_ACTION_NONE;
|
|
} else if (rdev->pm.planned_action == PM_ACTION_NONE &&
|
|
rdev->pm.can_downclock) {
|
|
rdev->pm.planned_action =
|
|
PM_ACTION_DOWNCLOCK;
|
|
rdev->pm.action_timeout = jiffies +
|
|
msecs_to_jiffies(RADEON_RECLOCK_DELAY_MS);
|
|
}
|
|
}
|
|
|
|
if (rdev->pm.planned_action != PM_ACTION_NONE &&
|
|
jiffies > rdev->pm.action_timeout) {
|
|
radeon_pm_set_clocks(rdev, false);
|
|
}
|
|
}
|
|
mutex_unlock(&rdev->pm.mutex);
|
|
mutex_unlock(&rdev->ddev->struct_mutex);
|
|
ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
|
|
|
|
queue_delayed_work(rdev->wq, &rdev->pm.idle_work,
|
|
msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
seq_printf(m, "state: %s\n", pm_state_names[rdev->pm.state]);
|
|
seq_printf(m, "default engine clock: %u0 kHz\n", rdev->clock.default_sclk);
|
|
seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
|
|
seq_printf(m, "default memory clock: %u0 kHz\n", rdev->clock.default_mclk);
|
|
if (rdev->asic->get_memory_clock)
|
|
seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
|
|
if (rdev->asic->get_pcie_lanes)
|
|
seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_info_list radeon_pm_info_list[] = {
|
|
{"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
|
|
};
|
|
#endif
|
|
|
|
static int radeon_debugfs_pm_init(struct radeon_device *rdev)
|
|
{
|
|
#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
|
|
}
|