+++ /dev/null
-/*
- *
- * (C) COPYRIGHT 2013-2015 ARM Limited. All rights reserved.
- *
- * This program is free software and is provided to you under the terms of the
- * GNU General Public License version 2 as published by the Free Software
- * Foundation, and any use by you of this program is subject to the terms
- * of such GNU licence.
- *
- * A copy of the licence is included with the program, and can also be obtained
- * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-/*
- * A core availability policy implementing demand core rotation.
- *
- * This policy periodically selects a new core mask at demand. This new mask is
- * applied in two stages. It initially powers off all undesired cores, by
- * removing them from the core availability mask. Once it is confirmed that
- * these cores are powered off, then the desired cores are powered on.
- */
-
-#include <mali_kbase.h>
-#include <mali_kbase_pm.h>
-#include <backend/gpu/mali_kbase_pm_internal.h>
-#include <linux/random.h>
-#include <linux/version.h>
-#include <linux/printk.h>
-
-#ifndef MALI_CA_TIMER
-static struct workqueue_struct *mali_ca_wq = NULL;
-#endif
-static int num_shader_cores_to_be_enabled = 0;
-
-int mali_perf_set_num_pp_cores(int cores)
-{
-#ifndef MALI_CA_TIMER
- struct kbase_device *kbdev = (struct kbase_device *)priv;
- struct kbasep_pm_ca_policy_demand *data =
- &kbdev->pm.backend.ca_policy_data.demand;
-#endif
-
- num_shader_cores_to_be_enabled = cores -1;
- printk("pp num=%d\n", num_shader_cores_to_be_enabled);
- if (num_shader_cores_to_be_enabled < 1)
- num_shader_cores_to_be_enabled = 1;
-
-#ifndef MALI_CA_TIMER
- queue_work(mali_ca_wq, &data->wq_work);
-#endif
-
- return 0;
-}
-
-#ifdef MALI_CA_TIMER
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 8, 0)
-/* random32 was renamed to prandom_u32 in 3.8 */
-#define prandom_u32 random32
-#endif
-
-void demand_timer_callback(unsigned long cb)
-{
- struct kbase_device *kbdev = (struct kbase_device *)cb;
- struct kbasep_pm_ca_policy_demand *data =
- &kbdev->pm.backend.ca_policy_data.demand;
- unsigned long flags;
-
- spin_lock_irqsave(&kbdev->pm.power_change_lock, flags);
-
- /* Select new core mask, ensuring that core group 0 is not powered off
- */
-#if 0
- do {
- data->cores_desired = prandom_u32() &
- kbdev->gpu_props.props.raw_props.shader_present;
- } while (!(data->cores_desired &
- kbdev->gpu_props.props.coherency_info.group[0].core_mask));
-#endif
- data->cores_desired = num_shader_cores_to_be_enabled;
-
- if (!(data->cores_desired &
- kbdev->gpu_props.props.coherency_info.group[0].core_mask))
- dev_info(kbdev->dev, "error, ca demand policy : new core mask=%llX\n",
- data->cores_desired);
-
- /* Disable any cores that are now unwanted */
- data->cores_enabled &= data->cores_desired;
-
- kbdev->pm.backend.ca_in_transition = true;
-
- /* If there are no cores to be powered off then power on desired cores
- */
- if (!(data->cores_used & ~data->cores_desired)) {
- data->cores_enabled = data->cores_desired;
- kbdev->pm.backend.ca_in_transition = false;
- }
-
- data->core_change_timer.expires = jiffies + HZ;
-
- add_timer(&data->core_change_timer);
-
- kbase_pm_update_cores_state_nolock(kbdev);
-
- spin_unlock_irqrestore(&kbdev->pm.power_change_lock, flags);
-
- dev_info(kbdev->dev, "ca demand policy : new core mask=%llX %llX\n",
- data->cores_desired, data->cores_enabled);
-}
-
-KBASE_EXPORT_TEST_API(demand_timer_callback);
-#else
-static void do_ca_scaling(struct work_struct *work)
-{
- //unsigned long flags;
- struct kbase_device *kbdev = = container_of(work,
- struct kbasep_pm_ca_policy_demand, wq_work);
- struct kbasep_pm_ca_policy_random *data =
- &kbdev->pm.backend.ca_policy_data.random;
- unsigned long flags;
-
- spin_lock_irqsave(&kbdev->pm.power_change_lock, flags);
-
- /* Select new core mask, ensuring that core group 0 is not powered off
- */
- data->cores_desired = num_shader_cores_to_be_enabled;
-
- /* Disable any cores that are now unwanted */
- data->cores_enabled &= data->cores_desired;
-
- kbdev->pm.backend.ca_in_transition = true;
-
- /* If there are no cores to be powered off then power on desired cores
- */
- if (!(data->cores_used & ~data->cores_desired)) {
- data->cores_enabled = data->cores_desired;
- kbdev->pm.backend.ca_in_transition = false;
- }
-
- kbase_pm_update_cores_state_nolock(kbdev);
-
- spin_unlock_irqrestore(&kbdev->pm.power_change_lock, flags);
-
- dev_info(kbdev->dev, "Random policy : new core mask=%llX %llX\n",
- data->cores_desired, data->cores_enabled);
-
-}
-#endif
-
-static void demand_init(struct kbase_device *kbdev)
-{
- struct kbasep_pm_ca_policy_demand *data =
- &kbdev->pm.backend.ca_policy_data.demand;
-
- data->cores_enabled = kbdev->gpu_props.props.raw_props.shader_present;
- data->cores_desired = kbdev->gpu_props.props.raw_props.shader_present;
- data->cores_used = 0;
- kbdev->pm.backend.ca_in_transition = false;
-
-#ifdef MALI_CA_TIMER
- init_timer(&data->core_change_timer);
-
- data->core_change_timer.function = demand_timer_callback;
- data->core_change_timer.data = (unsigned long) kbdev;
- data->core_change_timer.expires = jiffies + 5 * HZ;
-
- add_timer(&data->core_change_timer);
-#else
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)
- mali_ca_wq = alloc_workqueue("gpu_ca_wq", WQ_HIGHPRI | WQ_UNBOUND, 0);
-#else
- mali_ca_wq = create_workqueue("gpu_ca_wq");
-#endif
- INIT_WORK(&data->wq_work, do_ca_scaling);
- if (mali_ca_wq == NULL) printk("Unable to create gpu scaling workqueue\n");
-#endif
-}
-
-static void demand_term(struct kbase_device *kbdev)
-{
- struct kbasep_pm_ca_policy_demand *data =
- &kbdev->pm.backend.ca_policy_data.demand;
-
-#ifdef MALI_CA_TIMER
- del_timer(&data->core_change_timer);
-#else
- if (mali_ca_wq) {
- flush_workqueue(mali_ca_wq);
- destroy_workqueue(mali_ca_wq);
- mali_ca_wq = NULL;
- }
-#endif
-}
-
-static u64 demand_get_core_mask(struct kbase_device *kbdev)
-{
- return kbdev->pm.backend.ca_policy_data.demand.cores_enabled;
-}
-
-static void demand_update_core_status(struct kbase_device *kbdev,
- u64 cores_ready,
- u64 cores_transitioning)
-{
- struct kbasep_pm_ca_policy_demand *data =
- &kbdev->pm.backend.ca_policy_data.demand;
-
- lockdep_assert_held(&kbdev->pm.power_change_lock);
-
- data->cores_used = cores_ready | cores_transitioning;
-
- /* If in desired state then clear transition flag */
- if (data->cores_enabled == data->cores_desired)
- kbdev->pm.backend.ca_in_transition = false;
-
- /* If all undesired cores are now off then power on desired cores.
- * The direct comparison against cores_enabled limits potential
- * recursion to one level */
- if (!(data->cores_used & ~data->cores_desired) &&
- data->cores_enabled != data->cores_desired) {
- data->cores_enabled = data->cores_desired;
-
- kbase_pm_update_cores_state_nolock(kbdev);
-
- kbdev->pm.backend.ca_in_transition = false;
- }
-}
-
-/*
- * The struct kbase_pm_ca_policy structure for the demand core availability
- * policy.
- *
- * This is the static structure that defines the demand core availability power
- * policy's callback and name.
- */
-const struct kbase_pm_ca_policy kbase_pm_ca_demand_policy_ops = {
- "demand", /* name */
- demand_init, /* init */
- demand_term, /* term */
- demand_get_core_mask, /* get_core_mask */
- demand_update_core_status, /* update_core_status */
- 0u, /* flags */
- KBASE_PM_CA_POLICY_ID_DEMAND, /* id */
-};
-
-KBASE_EXPORT_TEST_API(kbase_pm_ca_demand_policy_ops);
projects / GitHub / LineageOS / G12 / android_hardware_amlogic_kernel-modules_mali-driver.git / blobdiff