| /* |
| * |
| * (C) COPYRIGHT 2014-2019 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, you can access it online at |
| * http://www.gnu.org/licenses/gpl-2.0.html. |
| * |
| * SPDX-License-Identifier: GPL-2.0 |
| * |
| */ |
| |
| |
| /* |
| * Register-based HW access backend APIs |
| */ |
| #include <mali_kbase.h> |
| #include <mali_kbase_hwaccess_backend.h> |
| #include <mali_kbase_reset_gpu.h> |
| #include <backend/gpu/mali_kbase_irq_internal.h> |
| #include <backend/gpu/mali_kbase_jm_internal.h> |
| #include <backend/gpu/mali_kbase_js_internal.h> |
| #include <backend/gpu/mali_kbase_pm_internal.h> |
| |
| int kbase_backend_early_init(struct kbase_device *kbdev) |
| { |
| int err; |
| |
| err = kbasep_platform_device_init(kbdev); |
| if (err) |
| return err; |
| |
| err = kbase_pm_runtime_init(kbdev); |
| if (err) |
| goto fail_runtime_pm; |
| |
| /* Ensure we can access the GPU registers */ |
| kbase_pm_register_access_enable(kbdev); |
| |
| /* Find out GPU properties based on the GPU feature registers */ |
| kbase_gpuprops_set(kbdev); |
| |
| /* We're done accessing the GPU registers for now. */ |
| kbase_pm_register_access_disable(kbdev); |
| |
| err = kbase_install_interrupts(kbdev); |
| if (err) |
| goto fail_interrupts; |
| |
| return 0; |
| |
| fail_interrupts: |
| kbase_pm_runtime_term(kbdev); |
| fail_runtime_pm: |
| kbasep_platform_device_term(kbdev); |
| |
| return err; |
| } |
| |
| void kbase_backend_early_term(struct kbase_device *kbdev) |
| { |
| kbase_release_interrupts(kbdev); |
| kbase_pm_runtime_term(kbdev); |
| kbasep_platform_device_term(kbdev); |
| } |
| |
| int kbase_backend_late_init(struct kbase_device *kbdev) |
| { |
| int err; |
| |
| err = kbase_hwaccess_pm_init(kbdev); |
| if (err) |
| return err; |
| |
| err = kbase_reset_gpu_init(kbdev); |
| if (err) |
| goto fail_reset_gpu_init; |
| |
| err = kbase_hwaccess_pm_powerup(kbdev, PM_HW_ISSUES_DETECT); |
| if (err) |
| goto fail_pm_powerup; |
| |
| err = kbase_backend_timer_init(kbdev); |
| if (err) |
| goto fail_timer; |
| |
| #ifdef CONFIG_MALI_DEBUG |
| #ifndef CONFIG_MALI_NO_MALI |
| if (kbasep_common_test_interrupt_handlers(kbdev) != 0) { |
| dev_err(kbdev->dev, "Interrupt assigment check failed.\n"); |
| err = -EINVAL; |
| goto fail_interrupt_test; |
| } |
| #endif /* !CONFIG_MALI_NO_MALI */ |
| #endif /* CONFIG_MALI_DEBUG */ |
| |
| err = kbase_job_slot_init(kbdev); |
| if (err) |
| goto fail_job_slot; |
| |
| /* Do the initialisation of devfreq. |
| * Devfreq needs backend_timer_init() for completion of its |
| * initialisation and it also needs to catch the first callback |
| * occurence of the runtime_suspend event for maintaining state |
| * coherence with the backend power management, hence needs to be |
| * placed before the kbase_pm_context_idle(). |
| */ |
| err = kbase_backend_devfreq_init(kbdev); |
| if (err) |
| goto fail_devfreq_init; |
| |
| /* Idle the GPU and/or cores, if the policy wants it to */ |
| kbase_pm_context_idle(kbdev); |
| |
| /* Update gpuprops with L2_FEATURES if applicable */ |
| kbase_gpuprops_update_l2_features(kbdev); |
| |
| init_waitqueue_head(&kbdev->hwaccess.backend.reset_wait); |
| |
| return 0; |
| |
| fail_devfreq_init: |
| kbase_job_slot_term(kbdev); |
| fail_job_slot: |
| |
| #ifdef CONFIG_MALI_DEBUG |
| #ifndef CONFIG_MALI_NO_MALI |
| fail_interrupt_test: |
| #endif /* !CONFIG_MALI_NO_MALI */ |
| #endif /* CONFIG_MALI_DEBUG */ |
| |
| kbase_backend_timer_term(kbdev); |
| fail_timer: |
| kbase_hwaccess_pm_halt(kbdev); |
| fail_pm_powerup: |
| kbase_reset_gpu_term(kbdev); |
| fail_reset_gpu_init: |
| kbase_hwaccess_pm_term(kbdev); |
| |
| return err; |
| } |
| |
| void kbase_backend_late_term(struct kbase_device *kbdev) |
| { |
| kbase_backend_devfreq_term(kbdev); |
| kbase_job_slot_halt(kbdev); |
| kbase_job_slot_term(kbdev); |
| kbase_backend_timer_term(kbdev); |
| kbase_hwaccess_pm_halt(kbdev); |
| kbase_reset_gpu_term(kbdev); |
| kbase_hwaccess_pm_term(kbdev); |
| } |