CHROMIUM: Bifrost r20p0 - add memory_group_manager.h
I don't feel that we should put ARM-specific code in include/,
so let's add it to this folder instead and change include
path in all files.
cp .../mali-ddk-bifrost/kernel/include/linux/memory_group_manager.h .
BUG=b:149806107
TEST=build kukui kernel
Change-Id: Ifdb3e855a82d3973c9b45e7ee7157e2582aa9175
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
diff --git a/drivers/gpu/arm/midgard/mali_kbase_defs.h b/drivers/gpu/arm/midgard/mali_kbase_defs.h
index 4f1c070..ca73872 100644
--- a/drivers/gpu/arm/midgard/mali_kbase_defs.h
+++ b/drivers/gpu/arm/midgard/mali_kbase_defs.h
@@ -69,7 +69,7 @@
#include <linux/clk.h>
#include <linux/regulator/consumer.h>
-#include <linux/memory_group_manager.h>
+#include "memory_group_manager.h"
#if defined(CONFIG_PM_RUNTIME) || \
(defined(CONFIG_PM) && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0))
diff --git a/drivers/gpu/arm/midgard/mali_kbase_mem_linux.c b/drivers/gpu/arm/midgard/mali_kbase_mem_linux.c
index 50a74ad..29c73ea 100644
--- a/drivers/gpu/arm/midgard/mali_kbase_mem_linux.c
+++ b/drivers/gpu/arm/midgard/mali_kbase_mem_linux.c
@@ -42,7 +42,7 @@
#include <linux/dma-buf.h>
#include <linux/shrinker.h>
#include <linux/cache.h>
-#include <linux/memory_group_manager.h>
+#include "memory_group_manager.h"
#include <mali_kbase.h>
#include <mali_kbase_mem_linux.h>
diff --git a/drivers/gpu/arm/midgard/mali_kbase_mem_pool_group.c b/drivers/gpu/arm/midgard/mali_kbase_mem_pool_group.c
index aa25548..eca29c3 100644
--- a/drivers/gpu/arm/midgard/mali_kbase_mem_pool_group.c
+++ b/drivers/gpu/arm/midgard/mali_kbase_mem_pool_group.c
@@ -24,7 +24,7 @@
#include <mali_kbase_mem.h>
#include <mali_kbase_mem_pool_group.h>
-#include <linux/memory_group_manager.h>
+#include "memory_group_manager.h"
void kbase_mem_pool_group_config_set_max_size(
struct kbase_mem_pool_group_config *const configs,
diff --git a/drivers/gpu/arm/midgard/mali_kbase_native_mgm.c b/drivers/gpu/arm/midgard/mali_kbase_native_mgm.c
index 38ae46e..c350446 100644
--- a/drivers/gpu/arm/midgard/mali_kbase_native_mgm.c
+++ b/drivers/gpu/arm/midgard/mali_kbase_native_mgm.c
@@ -22,7 +22,7 @@
#include <linux/gfp.h>
#include <linux/mm.h>
-#include <linux/memory_group_manager.h>
+#include "memory_group_manager.h"
#include <mali_kbase.h>
#include <mali_kbase_native_mgm.h>
diff --git a/drivers/gpu/arm/midgard/mali_kbase_native_mgm.h b/drivers/gpu/arm/midgard/mali_kbase_native_mgm.h
index 431b1f4..41489bd 100644
--- a/drivers/gpu/arm/midgard/mali_kbase_native_mgm.h
+++ b/drivers/gpu/arm/midgard/mali_kbase_native_mgm.h
@@ -23,7 +23,7 @@
#ifndef _KBASE_NATIVE_MGM_H_
#define _KBASE_NATIVE_MGM_H_
-#include <linux/memory_group_manager.h>
+#include "memory_group_manager.h"
/**
* kbase_native_mgm_dev - Native memory group manager device
diff --git a/drivers/gpu/arm/midgard/memory_group_manager.h b/drivers/gpu/arm/midgard/memory_group_manager.h
new file mode 100644
index 0000000..b1ac253
--- /dev/null
+++ b/drivers/gpu/arm/midgard/memory_group_manager.h
@@ -0,0 +1,198 @@
+/*
+ *
+ * (C) COPYRIGHT 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
+ *
+ */
+
+#ifndef _MEMORY_GROUP_MANAGER_H_
+#define _MEMORY_GROUP_MANAGER_H_
+
+#include <linux/mm.h>
+#include <linux/of.h>
+#include <linux/version.h>
+
+#if (KERNEL_VERSION(4, 17, 0) > LINUX_VERSION_CODE)
+typedef int vm_fault_t;
+#endif
+
+#define MEMORY_GROUP_MANAGER_NR_GROUPS (16)
+
+struct memory_group_manager_device;
+struct memory_group_manager_import_data;
+
+/**
+ * struct memory_group_manager_ops - Callbacks for memory group manager
+ * operations
+ *
+ * @mgm_alloc_page: Callback to allocate physical memory in a group
+ * @mgm_free_page: Callback to free physical memory in a group
+ * @mgm_get_import_memory_id: Callback to get the group ID for imported memory
+ * @mgm_update_gpu_pte: Callback to modify a GPU page table entry
+ * @mgm_vmf_insert_pfn_prot: Callback to map a physical memory page for the CPU
+ */
+struct memory_group_manager_ops {
+ /**
+ * mgm_alloc_page - Allocate a physical memory page in a group
+ *
+ * @mgm_dev: The memory group manager through which the request is
+ * being made.
+ * @group_id: A physical memory group ID. The meaning of this is defined
+ * by the systems integrator. Its valid range is
+ * 0 .. MEMORY_GROUP_MANAGER_NR_GROUPS-1.
+ * @gfp_mask: Bitmask of Get Free Page flags affecting allocator
+ * behavior.
+ * @order: Page order for physical page size (order=0 means 4 KiB,
+ * order=9 means 2 MiB).
+ *
+ * Return: Pointer to allocated page, or NULL if allocation failed.
+ */
+ struct page *(*mgm_alloc_page)(
+ struct memory_group_manager_device *mgm_dev, int group_id,
+ gfp_t gfp_mask, unsigned int order);
+
+ /**
+ * mgm_free_page - Free a physical memory page in a group
+ *
+ * @mgm_dev: The memory group manager through which the request
+ * is being made.
+ * @group_id: A physical memory group ID. The meaning of this is
+ * defined by the systems integrator. Its valid range is
+ * 0 .. MEMORY_GROUP_MANAGER_NR_GROUPS-1.
+ * @page: Address of the struct associated with a page of physical
+ * memory that was allocated by calling the mgm_alloc_page
+ * method of the same memory pool with the same values of
+ * @group_id and @order.
+ * @order: Page order for physical page size (order=0 means 4 KiB,
+ * order=9 means 2 MiB).
+ */
+ void (*mgm_free_page)(
+ struct memory_group_manager_device *mgm_dev, int group_id,
+ struct page *page, unsigned int order);
+
+ /**
+ * mgm_get_import_memory_id - Get the physical memory group ID for the
+ * imported memory
+ *
+ * @mgm_dev: The memory group manager through which the request
+ * is being made.
+ * @import_data: Pointer to the data which describes imported memory.
+ *
+ * Note that provision of this call back is optional, where it is not
+ * provided this call back pointer must be set to NULL to indicate it
+ * is not in use.
+ *
+ * Return: The memory group ID to use when mapping pages from this
+ * imported memory.
+ */
+ int (*mgm_get_import_memory_id)(
+ struct memory_group_manager_device *mgm_dev,
+ struct memory_group_manager_import_data *import_data);
+
+ /**
+ * mgm_update_gpu_pte - Modify a GPU page table entry for a memory group
+ *
+ * @mgm_dev: The memory group manager through which the request
+ * is being made.
+ * @group_id: A physical memory group ID. The meaning of this is
+ * defined by the systems integrator. Its valid range is
+ * 0 .. MEMORY_GROUP_MANAGER_NR_GROUPS-1.
+ * @mmu_level: The level of the page table entry in @ate.
+ * @pte: The page table entry to modify, in LPAE or AArch64 format
+ * (depending on the driver's configuration). This should be
+ * decoded to determine the physical address and any other
+ * properties of the mapping the manager requires.
+ *
+ * This function allows the memory group manager to modify a GPU page
+ * table entry before it is stored by the kbase module (controller
+ * driver). It may set certain bits in the page table entry attributes
+ * or in the physical address, based on the physical memory group ID.
+ *
+ * Return: A modified GPU page table entry to be stored in a page table.
+ */
+ u64 (*mgm_update_gpu_pte)(struct memory_group_manager_device *mgm_dev,
+ int group_id, int mmu_level, u64 pte);
+
+ /**
+ * mgm_vmf_insert_pfn_prot - Map a physical page in a group for the CPU
+ *
+ * @mgm_dev: The memory group manager through which the request
+ * is being made.
+ * @group_id: A physical memory group ID. The meaning of this is
+ * defined by the systems integrator. Its valid range is
+ * 0 .. MEMORY_GROUP_MANAGER_NR_GROUPS-1.
+ * @vma: The virtual memory area to insert the page into.
+ * @addr: A virtual address (in @vma) to assign to the page.
+ * @pfn: The kernel Page Frame Number to insert at @addr in @vma.
+ * @pgprot: Protection flags for the inserted page.
+ *
+ * Called from a CPU virtual memory page fault handler. This function
+ * creates a page table entry from the given parameter values and stores
+ * it at the appropriate location (unlike mgm_update_gpu_pte, which
+ * returns a modified entry).
+ *
+ * Return: Type of fault that occurred or VM_FAULT_NOPAGE if the page
+ * table entry was successfully installed.
+ */
+ vm_fault_t (*mgm_vmf_insert_pfn_prot)(
+ struct memory_group_manager_device *mgm_dev, int group_id,
+ struct vm_area_struct *vma, unsigned long addr,
+ unsigned long pfn, pgprot_t pgprot);
+};
+
+/**
+ * struct memory_group_manager_device - Device structure for a memory group
+ * manager
+ *
+ * @ops - Callbacks associated with this device
+ * @data - Pointer to device private data
+ *
+ * In order for a systems integrator to provide custom behaviors for memory
+ * operations performed by the kbase module (controller driver), they must
+ * provide a platform-specific driver module which implements this interface.
+ *
+ * This structure should be registered with the platform device using
+ * platform_set_drvdata().
+ */
+struct memory_group_manager_device {
+ struct memory_group_manager_ops ops;
+ void *data;
+ struct module *owner;
+};
+
+
+enum memory_group_manager_import_type {
+ MEMORY_GROUP_MANAGER_IMPORT_TYPE_DMA_BUF
+};
+
+/**
+ * struct memory_group_manager_import_data - Structure describing the imported
+ * memory
+ *
+ * @type - type of imported memory
+ * @u - Union describing the imported memory
+ *
+ */
+struct memory_group_manager_import_data {
+ enum memory_group_manager_import_type type;
+ union {
+ struct dma_buf *dma_buf;
+ } u;
+};
+
+#endif /* _MEMORY_GROUP_MANAGER_H_ */
