* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Rafał Miłecki <zajec5@gmail.com>
+ * Alex Deucher <alexdeucher@gmail.com>
*/
#include "drmP.h"
#include "radeon.h"
+#include "avivod.h"
-int radeon_debugfs_pm_init(struct radeon_device *rdev);
+#define RADEON_IDLE_LOOP_MS 100
+#define RADEON_RECLOCK_DELAY_MS 200
+#define RADEON_WAIT_VBLANK_TIMEOUT 200
+
+static void radeon_pm_set_clocks_locked(struct radeon_device *rdev);
+static void radeon_pm_set_clocks(struct radeon_device *rdev);
+static void radeon_pm_idle_work_handler(struct work_struct *work);
+static int radeon_debugfs_pm_init(struct radeon_device *rdev);
+
+static const char *pm_state_names[4] = {
+ "PM_STATE_DISABLED",
+ "PM_STATE_MINIMUM",
+ "PM_STATE_PAUSED",
+ "PM_STATE_ACTIVE"
+};
+
+static const char *pm_state_types[5] = {
+ "Default",
+ "Powersave",
+ "Battery",
+ "Balanced",
+ "Performance",
+};
+
+static void radeon_print_power_mode_info(struct radeon_device *rdev)
+{
+ int i, j;
+ bool is_default;
+
+ DRM_INFO("%d Power State(s)\n", rdev->pm.num_power_states);
+ for (i = 0; i < rdev->pm.num_power_states; i++) {
+ if (rdev->pm.default_power_state == &rdev->pm.power_state[i])
+ is_default = true;
+ else
+ is_default = false;
+ DRM_INFO("State %d %s %s\n", i,
+ pm_state_types[rdev->pm.power_state[i].type],
+ is_default ? "(default)" : "");
+ if ((rdev->flags & RADEON_IS_PCIE) && !(rdev->flags & RADEON_IS_IGP))
+ DRM_INFO("\t%d PCIE Lanes\n", rdev->pm.power_state[i].non_clock_info.pcie_lanes);
+ DRM_INFO("\t%d Clock Mode(s)\n", rdev->pm.power_state[i].num_clock_modes);
+ for (j = 0; j < rdev->pm.power_state[i].num_clock_modes; j++) {
+ if (rdev->flags & RADEON_IS_IGP)
+ DRM_INFO("\t\t%d engine: %d\n",
+ j,
+ rdev->pm.power_state[i].clock_info[j].sclk * 10);
+ else
+ DRM_INFO("\t\t%d engine/memory: %d/%d\n",
+ j,
+ rdev->pm.power_state[i].clock_info[j].sclk * 10,
+ rdev->pm.power_state[i].clock_info[j].mclk * 10);
+ }
+ }
+}
+
+static struct radeon_power_state * radeon_pick_power_state(struct radeon_device *rdev,
+ enum radeon_pm_state_type type)
+{
+ int i, j;
+ enum radeon_pm_state_type wanted_types[2];
+ int wanted_count;
+
+ switch (type) {
+ case POWER_STATE_TYPE_DEFAULT:
+ default:
+ return rdev->pm.default_power_state;
+ case POWER_STATE_TYPE_POWERSAVE:
+ if (rdev->flags & RADEON_IS_MOBILITY) {
+ wanted_types[0] = POWER_STATE_TYPE_POWERSAVE;
+ wanted_types[1] = POWER_STATE_TYPE_BATTERY;
+ wanted_count = 2;
+ } else {
+ wanted_types[0] = POWER_STATE_TYPE_PERFORMANCE;
+ wanted_count = 1;
+ }
+ break;
+ case POWER_STATE_TYPE_BATTERY:
+ if (rdev->flags & RADEON_IS_MOBILITY) {
+ wanted_types[0] = POWER_STATE_TYPE_BATTERY;
+ wanted_types[1] = POWER_STATE_TYPE_POWERSAVE;
+ wanted_count = 2;
+ } else {
+ wanted_types[0] = POWER_STATE_TYPE_PERFORMANCE;
+ wanted_count = 1;
+ }
+ break;
+ case POWER_STATE_TYPE_BALANCED:
+ case POWER_STATE_TYPE_PERFORMANCE:
+ wanted_types[0] = type;
+ wanted_count = 1;
+ break;
+ }
+
+ for (i = 0; i < wanted_count; i++) {
+ for (j = 0; j < rdev->pm.num_power_states; j++) {
+ if (rdev->pm.power_state[j].type == wanted_types[i])
+ return &rdev->pm.power_state[j];
+ }
+ }
+
+ return rdev->pm.default_power_state;
+}
+
+static struct radeon_pm_clock_info * radeon_pick_clock_mode(struct radeon_device *rdev,
+ struct radeon_power_state *power_state,
+ enum radeon_pm_clock_mode_type type)
+{
+ switch (type) {
+ case POWER_MODE_TYPE_DEFAULT:
+ default:
+ return power_state->default_clock_mode;
+ case POWER_MODE_TYPE_LOW:
+ return &power_state->clock_info[0];
+ case POWER_MODE_TYPE_MID:
+ if (power_state->num_clock_modes > 2)
+ return &power_state->clock_info[1];
+ else
+ return &power_state->clock_info[0];
+ break;
+ case POWER_MODE_TYPE_HIGH:
+ return &power_state->clock_info[power_state->num_clock_modes - 1];
+ }
+
+}
+
+static void radeon_get_power_state(struct radeon_device *rdev,
+ enum radeon_pm_action action)
+{
+ switch (action) {
+ case PM_ACTION_MINIMUM:
+ rdev->pm.requested_power_state = radeon_pick_power_state(rdev, POWER_STATE_TYPE_BATTERY);
+ rdev->pm.requested_clock_mode =
+ radeon_pick_clock_mode(rdev, rdev->pm.requested_power_state, POWER_MODE_TYPE_LOW);
+ break;
+ case PM_ACTION_DOWNCLOCK:
+ rdev->pm.requested_power_state = radeon_pick_power_state(rdev, POWER_STATE_TYPE_POWERSAVE);
+ rdev->pm.requested_clock_mode =
+ radeon_pick_clock_mode(rdev, rdev->pm.requested_power_state, POWER_MODE_TYPE_MID);
+ break;
+ case PM_ACTION_UPCLOCK:
+ rdev->pm.requested_power_state = radeon_pick_power_state(rdev, POWER_STATE_TYPE_DEFAULT);
+ rdev->pm.requested_clock_mode =
+ radeon_pick_clock_mode(rdev, rdev->pm.requested_power_state, POWER_MODE_TYPE_HIGH);
+ break;
+ case PM_ACTION_NONE:
+ default:
+ DRM_ERROR("Requested mode for not defined action\n");
+ return;
+ }
+ DRM_INFO("Requested: e: %d m: %d p: %d\n",
+ rdev->pm.requested_clock_mode->sclk,
+ rdev->pm.requested_clock_mode->mclk,
+ rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
+}
+
+static void radeon_set_power_state(struct radeon_device *rdev)
+{
+ /* if *_clock_mode are the same, *_power_state are as well */
+ if (rdev->pm.requested_clock_mode == rdev->pm.current_clock_mode)
+ return;
+
+ DRM_INFO("Setting: e: %d m: %d p: %d\n",
+ rdev->pm.requested_clock_mode->sclk,
+ rdev->pm.requested_clock_mode->mclk,
+ rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
+ /* set pcie lanes */
+ /* set voltage */
+ /* set engine clock */
+ radeon_set_engine_clock(rdev, rdev->pm.requested_clock_mode->sclk);
+ /* set memory clock */
+
+ rdev->pm.current_power_state = rdev->pm.requested_power_state;
+ rdev->pm.current_clock_mode = rdev->pm.requested_clock_mode;
+}
int radeon_pm_init(struct radeon_device *rdev)
{
+ rdev->pm.state = PM_STATE_DISABLED;
+ rdev->pm.planned_action = PM_ACTION_NONE;
+ rdev->pm.downclocked = false;
+
+ if (rdev->bios) {
+ if (rdev->is_atom_bios)
+ radeon_atombios_get_power_modes(rdev);
+ else
+ radeon_combios_get_power_modes(rdev);
+ radeon_print_power_mode_info(rdev);
+ }
+
if (radeon_debugfs_pm_init(rdev)) {
DRM_ERROR("Failed to register debugfs file for PM!\n");
}
+ INIT_DELAYED_WORK(&rdev->pm.idle_work, radeon_pm_idle_work_handler);
+
+ if (radeon_dynpm != -1 && radeon_dynpm) {
+ rdev->pm.state = PM_STATE_PAUSED;
+ DRM_INFO("radeon: dynamic power management enabled\n");
+ }
+
+ DRM_INFO("radeon: power management initialized\n");
+
return 0;
}
+void radeon_pm_compute_clocks(struct radeon_device *rdev)
+{
+ struct drm_device *ddev = rdev->ddev;
+ struct drm_connector *connector;
+ struct radeon_crtc *radeon_crtc;
+ int count = 0;
+
+ if (rdev->pm.state == PM_STATE_DISABLED)
+ return;
+
+ mutex_lock(&rdev->pm.mutex);
+
+ rdev->pm.active_crtcs = 0;
+ list_for_each_entry(connector,
+ &ddev->mode_config.connector_list, head) {
+ if (connector->encoder &&
+ connector->dpms != DRM_MODE_DPMS_OFF) {
+ radeon_crtc = to_radeon_crtc(connector->encoder->crtc);
+ rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
+ ++count;
+ }
+ }
+
+ if (count > 1) {
+ if (rdev->pm.state == PM_STATE_ACTIVE) {
+ cancel_delayed_work(&rdev->pm.idle_work);
+
+ rdev->pm.state = PM_STATE_PAUSED;
+ rdev->pm.planned_action = PM_ACTION_UPCLOCK;
+ if (rdev->pm.downclocked)
+ radeon_pm_set_clocks(rdev);
+
+ DRM_DEBUG("radeon: dynamic power management deactivated\n");
+ }
+ } else if (count == 1) {
+ /* TODO: Increase clocks if needed for current mode */
+
+ if (rdev->pm.state == PM_STATE_MINIMUM) {
+ rdev->pm.state = PM_STATE_ACTIVE;
+ rdev->pm.planned_action = PM_ACTION_UPCLOCK;
+ radeon_pm_set_clocks(rdev);
+
+ queue_delayed_work(rdev->wq, &rdev->pm.idle_work,
+ msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
+ }
+ else if (rdev->pm.state == PM_STATE_PAUSED) {
+ rdev->pm.state = PM_STATE_ACTIVE;
+ queue_delayed_work(rdev->wq, &rdev->pm.idle_work,
+ msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
+ DRM_DEBUG("radeon: dynamic power management activated\n");
+ }
+ }
+ else { /* count == 0 */
+ if (rdev->pm.state != PM_STATE_MINIMUM) {
+ cancel_delayed_work(&rdev->pm.idle_work);
+
+ rdev->pm.state = PM_STATE_MINIMUM;
+ rdev->pm.planned_action = PM_ACTION_MINIMUM;
+ radeon_pm_set_clocks(rdev);
+ }
+ }
+
+ mutex_unlock(&rdev->pm.mutex);
+}
+
+static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish)
+{
+ u32 stat_crtc1 = 0, stat_crtc2 = 0;
+ bool in_vbl = true;
+
+ if (ASIC_IS_AVIVO(rdev)) {
+ if (rdev->pm.active_crtcs & (1 << 0)) {
+ stat_crtc1 = RREG32(D1CRTC_STATUS);
+ if (!(stat_crtc1 & 1))
+ in_vbl = false;
+ }
+ if (rdev->pm.active_crtcs & (1 << 1)) {
+ stat_crtc2 = RREG32(D2CRTC_STATUS);
+ if (!(stat_crtc2 & 1))
+ in_vbl = false;
+ }
+ }
+ if (in_vbl == false)
+ DRM_INFO("not in vbl for pm change %08x %08x at %s\n", stat_crtc1,
+ stat_crtc2, finish ? "exit" : "entry");
+ return in_vbl;
+}
+static void radeon_pm_set_clocks_locked(struct radeon_device *rdev)
+{
+ /*radeon_fence_wait_last(rdev);*/
+ switch (rdev->pm.planned_action) {
+ case PM_ACTION_UPCLOCK:
+ rdev->pm.downclocked = false;
+ break;
+ case PM_ACTION_DOWNCLOCK:
+ rdev->pm.downclocked = true;
+ break;
+ case PM_ACTION_MINIMUM:
+ break;
+ case PM_ACTION_NONE:
+ DRM_ERROR("%s: PM_ACTION_NONE\n", __func__);
+ break;
+ }
+
+ /* check if we are in vblank */
+ radeon_pm_debug_check_in_vbl(rdev, false);
+ radeon_set_power_state(rdev);
+ radeon_pm_debug_check_in_vbl(rdev, true);
+ rdev->pm.planned_action = PM_ACTION_NONE;
+}
+
+static void radeon_pm_set_clocks(struct radeon_device *rdev)
+{
+ radeon_get_power_state(rdev, rdev->pm.planned_action);
+ mutex_lock(&rdev->cp.mutex);
+
+ if (rdev->pm.active_crtcs & (1 << 0)) {
+ rdev->pm.req_vblank |= (1 << 0);
+ drm_vblank_get(rdev->ddev, 0);
+ }
+ if (rdev->pm.active_crtcs & (1 << 1)) {
+ rdev->pm.req_vblank |= (1 << 1);
+ drm_vblank_get(rdev->ddev, 1);
+ }
+ if (rdev->pm.active_crtcs)
+ wait_event_interruptible_timeout(
+ rdev->irq.vblank_queue, 0,
+ msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
+ if (rdev->pm.req_vblank & (1 << 0)) {
+ rdev->pm.req_vblank &= ~(1 << 0);
+ drm_vblank_put(rdev->ddev, 0);
+ }
+ if (rdev->pm.req_vblank & (1 << 1)) {
+ rdev->pm.req_vblank &= ~(1 << 1);
+ drm_vblank_put(rdev->ddev, 1);
+ }
+
+ radeon_pm_set_clocks_locked(rdev);
+ mutex_unlock(&rdev->cp.mutex);
+}
+
+static void radeon_pm_idle_work_handler(struct work_struct *work)
+{
+ struct radeon_device *rdev;
+ rdev = container_of(work, struct radeon_device,
+ pm.idle_work.work);
+
+ 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.downclocked) {
+ 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.downclocked) {
+ 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);
+ }
+ }
+ mutex_unlock(&rdev->pm.mutex);
+
+ queue_delayed_work(rdev->wq, &rdev->pm.idle_work,
+ msecs_to_jiffies(RADEON_IDLE_LOOP_MS));
+}
+
/*
* Debugfs info
*/
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;
}
};
#endif
-int radeon_debugfs_pm_init(struct radeon_device *rdev)
+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));
git.openpandora.org / pandora-kernel.git / blobdiff