drm/radeon/kms/pm: rework power management
Add two new sysfs attributes: - dynpm - power_state Echoing 0/1 to dynpm disables/enables dynamic power management. The driver scales the sclk dynamically based on the number of queued fences. dynpm only scales sclk dynamically in single head mode. Echoing x.y to power_state selects a static power state (x) and clock mode (y). This allows you to statically select a power state and clock mode. Selecting a static clock mode will disable dynpm. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
parent
49e02b7306
commit
a424816fb3
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@ -145,7 +145,7 @@ void r100_get_power_state(struct radeon_device *rdev,
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pcie_lanes);
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}
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void r100_set_power_state(struct radeon_device *rdev)
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void r100_set_power_state(struct radeon_device *rdev, bool static_switch)
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{
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u32 sclk, mclk;
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@ -167,33 +167,51 @@ void r100_set_power_state(struct radeon_device *rdev)
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if (rdev->pm.active_crtc_count > 1)
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mclk = rdev->clock.default_mclk;
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/* set pcie lanes */
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/* TODO */
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/* voltage, pcie lanes, etc.*/
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radeon_pm_misc(rdev);
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/* set voltage */
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/* TODO */
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/* set engine clock */
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if (sclk != rdev->pm.current_sclk) {
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radeon_sync_with_vblank(rdev);
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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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DRM_INFO("Setting: e: %d\n", sclk);
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}
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if (static_switch) {
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radeon_pm_prepare(rdev);
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/* set engine clock */
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if (sclk != rdev->pm.current_sclk) {
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radeon_set_engine_clock(rdev, sclk);
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rdev->pm.current_sclk = sclk;
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DRM_INFO("Setting: e: %d\n", sclk);
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}
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#if 0
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/* set memory clock */
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if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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radeon_set_memory_clock(rdev, mclk);
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rdev->pm.current_mclk = mclk;
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DRM_INFO("Setting: m: %d\n", mclk);
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}
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#endif
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radeon_pm_finish(rdev);
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} else {
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/* set engine clock */
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if (sclk != rdev->pm.current_sclk) {
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radeon_sync_with_vblank(rdev);
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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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DRM_INFO("Setting: e: %d\n", sclk);
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}
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#if 0
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/* set memory clock */
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if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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radeon_sync_with_vblank(rdev);
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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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DRM_INFO("Setting: m: %d\n", mclk);
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}
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/* set memory clock */
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if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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radeon_sync_with_vblank(rdev);
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radeon_pm_debug_check_in_vbl(rdev, false);
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radeon_pm_prepare(rdev);
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radeon_set_memory_clock(rdev, mclk);
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radeon_pm_finish(rdev);
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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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DRM_INFO("Setting: m: %d\n", mclk);
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}
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#endif
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}
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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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@ -247,7 +247,7 @@ void r600_get_power_state(struct radeon_device *rdev,
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pcie_lanes);
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}
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void r600_set_power_state(struct radeon_device *rdev)
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void r600_set_power_state(struct radeon_device *rdev, bool static_switch)
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{
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u32 sclk, mclk;
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@ -266,37 +266,52 @@ void r600_set_power_state(struct radeon_device *rdev)
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clock_info[rdev->pm.requested_clock_mode_index].mclk;
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if (mclk > rdev->clock.default_mclk)
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mclk = rdev->clock.default_mclk;
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/* don't change the mclk with multiple crtcs */
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if (rdev->pm.active_crtc_count > 1)
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mclk = rdev->clock.default_mclk;
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/* set pcie lanes */
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/* TODO */
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/* voltage, pcie lanes, etc.*/
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radeon_pm_misc(rdev);
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/* set voltage */
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/* TODO */
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/* set engine clock */
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if (sclk != rdev->pm.current_sclk) {
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radeon_sync_with_vblank(rdev);
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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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DRM_INFO("Setting: e: %d\n", sclk);
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}
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if (static_switch) {
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radeon_pm_prepare(rdev);
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/* set engine clock */
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if (sclk != rdev->pm.current_sclk) {
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radeon_set_engine_clock(rdev, sclk);
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rdev->pm.current_sclk = sclk;
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DRM_INFO("Setting: e: %d\n", sclk);
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}
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#if 0
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/* set memory clock */
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if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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radeon_set_memory_clock(rdev, mclk);
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rdev->pm.current_mclk = mclk;
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DRM_INFO("Setting: m: %d\n", mclk);
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}
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#endif
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radeon_pm_finish(rdev);
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} else {
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/* set engine clock */
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if (sclk != rdev->pm.current_sclk) {
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radeon_sync_with_vblank(rdev);
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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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DRM_INFO("Setting: e: %d\n", sclk);
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}
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#if 0
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/* set memory clock */
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if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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radeon_sync_with_vblank(rdev);
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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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DRM_INFO("Setting: m: %d\n", mclk);
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}
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/* set memory clock */
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if (rdev->asic->set_memory_clock && (mclk != rdev->pm.current_mclk)) {
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radeon_sync_with_vblank(rdev);
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radeon_pm_debug_check_in_vbl(rdev, false);
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radeon_pm_prepare(rdev);
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radeon_set_memory_clock(rdev, mclk);
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radeon_pm_finish(rdev);
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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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DRM_INFO("Setting: m: %d\n", mclk);
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}
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#endif
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}
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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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@ -814,7 +814,7 @@ struct radeon_asic {
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void (*ioctl_wait_idle)(struct radeon_device *rdev, struct radeon_bo *bo);
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bool (*gui_idle)(struct radeon_device *rdev);
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void (*get_power_state)(struct radeon_device *rdev, enum radeon_pm_action action);
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void (*set_power_state)(struct radeon_device *rdev);
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void (*set_power_state)(struct radeon_device *rdev, bool static_switch);
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void (*pm_misc)(struct radeon_device *rdev);
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void (*pm_prepare)(struct radeon_device *rdev);
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void (*pm_finish)(struct radeon_device *rdev);
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@ -1226,7 +1226,10 @@ static inline void radeon_ring_write(struct radeon_device *rdev, uint32_t v)
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#define radeon_hpd_set_polarity(rdev, hpd) (rdev)->asic->hpd_set_polarity((rdev), (hpd))
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#define radeon_gui_idle(rdev) (rdev)->asic->gui_idle((rdev))
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#define radeon_get_power_state(rdev, a) (rdev)->asic->get_power_state((rdev), (a))
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#define radeon_set_power_state(rdev) (rdev)->asic->set_power_state((rdev))
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#define radeon_set_power_state(rdev, s) (rdev)->asic->set_power_state((rdev), (s))
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#define radeon_pm_misc(rdev) (rdev)->asic->pm_misc((rdev))
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#define radeon_pm_prepare(rdev) (rdev)->asic->pm_prepare((rdev))
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#define radeon_pm_finish(rdev) (rdev)->asic->pm_finish((rdev))
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/* Common functions */
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/* AGP */
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@ -127,7 +127,7 @@ void r100_enable_bm(struct radeon_device *rdev);
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void r100_set_common_regs(struct radeon_device *rdev);
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void r100_bm_disable(struct radeon_device *rdev);
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extern bool r100_gui_idle(struct radeon_device *rdev);
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extern void r100_set_power_state(struct radeon_device *rdev);
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extern void r100_set_power_state(struct radeon_device *rdev, bool static_switch);
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extern void r100_get_power_state(struct radeon_device *rdev,
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enum radeon_pm_action action);
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extern void r100_pm_misc(struct radeon_device *rdev);
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enum radeon_hpd_id hpd);
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extern void r600_ioctl_wait_idle(struct radeon_device *rdev, struct radeon_bo *bo);
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extern bool r600_gui_idle(struct radeon_device *rdev);
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extern void r600_set_power_state(struct radeon_device *rdev);
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extern void r600_set_power_state(struct radeon_device *rdev, bool static_switch);
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extern void r600_get_power_state(struct radeon_device *rdev,
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enum radeon_pm_action action);
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extern void r600_pm_misc(struct radeon_device *rdev);
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@ -34,6 +34,128 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev);
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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_pm_set_power_mode_static_locked(struct radeon_device *rdev)
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{
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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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radeon_set_power_state(rdev, true);
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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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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->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_power_mode_static_locked(rdev);
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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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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->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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/* 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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@ -111,6 +233,10 @@ int radeon_pm_init(struct radeon_device *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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@ -132,8 +258,19 @@ void radeon_pm_fini(struct radeon_device *rdev)
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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);
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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->pm.mutex);
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radeon_pm_set_power_mode_static_locked(rdev);
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mutex_unlock(&rdev->pm.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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@ -267,7 +404,7 @@ static void radeon_pm_set_clocks_locked(struct radeon_device *rdev)
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{
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/*radeon_fence_wait_last(rdev);*/
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radeon_set_power_state(rdev);
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radeon_set_power_state(rdev, false);
|
||||
rdev->pm.planned_action = PM_ACTION_NONE;
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue