Mali Valhall Android DDK r40p0-01eac0 KMD

Provenance: 056ded72d351d1bf6319f7b2b925496dd6ad304f (ipdelivery/EAC/v_r40p0)
    VX504X08X-BU-00000-r40p0-01eac0 - Valhall Android DDK
    VX504X08X-BU-60000-r40p0-01eac0 - Valhall Android Document Bundle
    VX504X08X-DC-11001-r40p0-01eac0 - Valhall Android DDK Software Errata
    VX504X08X-SW-99006-r40p0-01eac0 - Valhall Android Renderscript AOSP parts

Change-Id: I6db6b45c73c5447dd246533246e65b5ef2c8872f

1 files changed, 94 insertions, 0 deletions

diff --git a/mali_kbase/mali_kbase_mem_migrate.h b/mali_kbase/mali_kbase_mem_migrate.h
new file mode 100644
index 0000000..6610c0c
--- /dev/null
+++ b/mali_kbase/mali_kbase_mem_migrate.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ *
+ * (C) COPYRIGHT 2022 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 license.
+ *
+ * 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.
+ *
+ */
+
+/**
+ * DOC: Base kernel page migration implementation.
+ */
+
+#define PAGE_STATUS_MASK ((u8)0x7F)
+#define PAGE_STATUS_GET(status) (status & PAGE_STATUS_MASK)
+#define PAGE_STATUS_SET(status, value) ((status & ~PAGE_STATUS_MASK) | (value & PAGE_STATUS_MASK))
+#define PAGE_ISOLATE_SHIFT (7)
+#define PAGE_ISOLATE_SET(status, value)                                                            \
+	((status & PAGE_STATUS_MASK) | (value << PAGE_ISOLATE_SHIFT))
+#define IS_PAGE_ISOLATED(status) ((bool)(status & ~PAGE_STATUS_MASK))
+
+/* Global integer used to determine if module parameter value has been
+ * provided and if page migration feature is enabled.
+ */
+extern int kbase_page_migration_enabled;
+
+/**
+ * kbase_alloc_page_metadata - Allocate and initialize page metadata
+ * @kbdev:    Pointer to kbase device.
+ * @p:        Page to assign metadata to.
+ * @dma_addr: DMA address mapped to paged.
+ *
+ * This will allocate memory for the page's metadata, initialize it and
+ * assign a reference to the page's private field. Importantly, once
+ * the metadata is set and ready this function will mark the page as
+ * movable.
+ *
+ * Return: true if successful or false otherwise.
+ */
+bool kbase_alloc_page_metadata(struct kbase_device *kbdev, struct page *p, dma_addr_t dma_addr);
+
+/**
+ * kbase_free_page_later - Defer freeing of given page.
+ * @kbdev:  Pointer to kbase device
+ * @p:      Page to free
+ *
+ * This will add given page to a list of pages which will be freed at
+ * a later time.
+ */
+void kbase_free_page_later(struct kbase_device *kbdev, struct page *p);
+
+/*
+ * kbase_mem_migrate_set_address_space_ops - Set address space operations
+ *
+ * @kbdev: Pointer to object representing an instance of GPU platform device.
+ * @filp:  Pointer to the struct file corresponding to device file
+ *         /dev/malixx instance, passed to the file's open method.
+ *
+ * Assign address space operations to the given file struct @filp and
+ * add a reference to @kbdev.
+ */
+void kbase_mem_migrate_set_address_space_ops(struct kbase_device *kbdev, struct file *const filp);
+
+/*
+ * kbase_mem_migrate_init - Initialise kbase page migration
+ *
+ * @kbdev: Pointer to kbase device
+ *
+ * Enables page migration by default based on GPU and setup work queue to
+ * defer freeing pages during page migration callbacks.
+ */
+void kbase_mem_migrate_init(struct kbase_device *kbdev);
+
+/*
+ * kbase_mem_migrate_term - Terminate kbase page migration
+ *
+ * @kbdev: Pointer to kbase device
+ *
+ * This will flush any work left to free pages from page migration
+ * and destroy workqueue associated.
+ */
+void kbase_mem_migrate_term(struct kbase_device *kbdev);