1 files changed, 260 insertions, 0 deletions
diff --git a/bifrost/r25p0/kernel/drivers/gpu/arm/midgard/device/backend/mali_kbase_device_jm.c b/bifrost/r25p0/kernel/drivers/gpu/arm/midgard/device/backend/mali_kbase_device_jm.c
new file mode 100644
index 0000000..fbba2e7
--- /dev/null
+++ b/bifrost/r25p0/kernel/drivers/gpu/arm/midgard/device/backend/mali_kbase_device_jm.c
@@ -0,0 +1,260 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * (C) COPYRIGHT 2019-2020 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
+ *
+ */
+
+#include "../mali_kbase_device_internal.h"
+#include "../mali_kbase_device.h"
+
+#include <mali_kbase_config_defaults.h>
+#include <mali_kbase_hwaccess_backend.h>
+#include <mali_kbase_ctx_sched.h>
+#include <mali_kbase_reset_gpu.h>
+
+#ifdef CONFIG_MALI_NO_MALI
+#include <mali_kbase_model_linux.h>
+#endif
+
+#ifdef CONFIG_MALI_ARBITER_SUPPORT
+#include <arbiter/mali_kbase_arbiter_pm.h>
+#endif
+
+#include <mali_kbase.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>
+#include <mali_kbase_dummy_job_wa.h>
+
+/**
+ * kbase_backend_late_init - Perform any backend-specific initialization.
+ * @kbdev:	Device pointer
+ *
+ * Return: 0 on success, or an error code on failure.
+ */
+static 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 assignment 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
+	 * occurrence 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 */
+	err = kbase_gpuprops_update_l2_features(kbdev);
+	if (err)
+		goto fail_update_l2_features;
+
+	init_waitqueue_head(&kbdev->hwaccess.backend.reset_wait);
+
+	return 0;
+
+fail_update_l2_features:
+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;
+}
+
+/**
+ * kbase_backend_late_term - Perform any backend-specific termination.
+ * @kbdev:	Device pointer
+ */
+static 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);
+}
+
+static const struct kbase_device_init dev_init[] = {
+#ifdef CONFIG_MALI_NO_MALI
+	{kbase_gpu_device_create, kbase_gpu_device_destroy,
+			"Dummy model initialization failed"},
+#else
+	{assign_irqs, NULL,
+			"IRQ search failed"},
+	{registers_map, registers_unmap,
+			"Register map failed"},
+#endif
+	{kbase_device_io_history_init, kbase_device_io_history_term,
+			"Register access history initialization failed"},
+	{kbase_device_pm_init, kbase_device_pm_term,
+			"Power management initialization failed"},
+	{kbase_device_early_init, kbase_device_early_term,
+			"Early device initialization failed"},
+	{kbase_device_populate_max_freq, NULL,
+			"Populating max frequency failed"},
+	{kbase_device_misc_init, kbase_device_misc_term,
+			"Miscellaneous device initialization failed"},
+	{kbase_ctx_sched_init, kbase_ctx_sched_term,
+			"Context scheduler initialization failed"},
+	{kbase_mem_init, kbase_mem_term,
+			"Memory subsystem initialization failed"},
+	{kbase_device_coherency_init, NULL,
+			"Device coherency init failed"},
+	{kbase_protected_mode_init, kbase_protected_mode_term,
+			"Protected mode subsystem initialization failed"},
+	{kbase_device_list_init, kbase_device_list_term,
+			"Device list setup failed"},
+	{kbasep_js_devdata_init, kbasep_js_devdata_term,
+			"Job JS devdata initialization failed"},
+	{kbase_device_timeline_init, kbase_device_timeline_term,
+			"Timeline stream initialization failed"},
+	{kbase_device_hwcnt_backend_gpu_init,
+			kbase_device_hwcnt_backend_gpu_term,
+			"GPU hwcnt backend creation failed"},
+	{kbase_device_hwcnt_context_init, kbase_device_hwcnt_context_term,
+			"GPU hwcnt context initialization failed"},
+	{kbase_device_hwcnt_virtualizer_init,
+			kbase_device_hwcnt_virtualizer_term,
+			"GPU hwcnt virtualizer initialization failed"},
+	{kbase_device_vinstr_init, kbase_device_vinstr_term,
+			"Virtual instrumentation initialization failed"},
+	{kbase_backend_late_init, kbase_backend_late_term,
+			"Late backend initialization failed"},
+#ifdef MALI_KBASE_BUILD
+	{kbase_debug_job_fault_dev_init, kbase_debug_job_fault_dev_term,
+			"Job fault debug initialization failed"},
+	{kbase_device_debugfs_init, kbase_device_debugfs_term,
+			"DebugFS initialization failed"},
+	/* Sysfs init needs to happen before registering the device with
+	 * misc_register(), otherwise it causes a race condition between
+	 * registering the device and a uevent event being generated for
+	 * userspace, causing udev rules to run which might expect certain
+	 * sysfs attributes present. As a result of the race condition
+	 * we avoid, some Mali sysfs entries may have appeared to udev
+	 * to not exist.
+	 * For more information, see
+	 * https://www.kernel.org/doc/Documentation/driver-model/device.txt, the
+	 * paragraph that starts with "Word of warning", currently the
+	 * second-last paragraph.
+	 */
+	{kbase_sysfs_init, kbase_sysfs_term, "SysFS group creation failed"},
+	{kbase_device_misc_register, kbase_device_misc_deregister,
+			"Misc device registration failed"},
+#ifdef CONFIG_MALI_BUSLOG
+	{buslog_init, buslog_term, "Bus log client registration failed"},
+#endif
+	{kbase_gpuprops_populate_user_buffer, kbase_gpuprops_free_user_buffer,
+			"GPU property population failed"},
+#endif
+	{kbase_dummy_job_wa_load, kbase_dummy_job_wa_cleanup,
+			"Dummy job workaround load failed"},
+};
+
+static void kbase_device_term_partial(struct kbase_device *kbdev,
+		unsigned int i)
+{
+	while (i-- > 0) {
+		if (dev_init[i].term)
+			dev_init[i].term(kbdev);
+	}
+}
+
+void kbase_device_term(struct kbase_device *kbdev)
+{
+	kbase_device_term_partial(kbdev, ARRAY_SIZE(dev_init));
+	kbasep_js_devdata_halt(kbdev);
+	kbase_mem_halt(kbdev);
+}
+
+int kbase_device_init(struct kbase_device *kbdev)
+{
+	int err = 0;
+	unsigned int i = 0;
+
+	dev_info(kbdev->dev, "Kernel DDK version %s", MALI_RELEASE_NAME);
+
+	kbase_device_id_init(kbdev);
+	kbase_disjoint_init(kbdev);
+
+	for (i = 0; i < ARRAY_SIZE(dev_init); i++) {
+		err = dev_init[i].init(kbdev);
+		if (err) {
+			dev_err(kbdev->dev, "%s error = %d\n",
+						dev_init[i].err_mes, err);
+			kbase_device_term_partial(kbdev, i);
+			break;
+		}
+	}
+
+	return err;
+}