From: sidraya.bj@pathpartnertech.com
To: gregkh@linuxfoundation.org, linux-staging@lists.linux.dev,
linux-kernel@vger.kernel.org
Cc: prashanth.ka@pathpartnertech.com, praneeth@ti.com,
mchehab@kernel.org, linux-media@vger.kernel.org,
praveen.ap@pathpartnertech.com,
Sidraya <sidraya.bj@pathpartnertech.com>
Subject: [PATCH 11/30] v4l: vxd-dec: Add TALMMU module
Date: Wed, 18 Aug 2021 19:40:18 +0530 [thread overview]
Message-ID: <20210818141037.19990-12-sidraya.bj@pathpartnertech.com> (raw)
In-Reply-To: <20210818141037.19990-1-sidraya.bj@pathpartnertech.com>
From: Sidraya <sidraya.bj@pathpartnertech.com>
It contains the implementation of Address allocation management
APIs, list processing primitives, generic resource allocations,
self scaling has tables and object pool memory allocator which
are needed for TALMMU functionality
Signed-off-by: Lakshmi Sankar <lakshmisankar-t@ti.com>
Signed-off-by: Sidraya <sidraya.bj@pathpartnertech.com>
---
MAINTAINERS | 10 +
drivers/staging/media/vxd/common/addr_alloc.c | 499 +++++++++
drivers/staging/media/vxd/common/addr_alloc.h | 238 +++++
drivers/staging/media/vxd/common/hash.c | 481 +++++++++
drivers/staging/media/vxd/common/hash.h | 86 ++
drivers/staging/media/vxd/common/pool.c | 228 ++++
drivers/staging/media/vxd/common/pool.h | 66 ++
drivers/staging/media/vxd/common/ra.c | 972 ++++++++++++++++++
drivers/staging/media/vxd/common/ra.h | 200 ++++
drivers/staging/media/vxd/common/talmmu_api.c | 753 ++++++++++++++
drivers/staging/media/vxd/common/talmmu_api.h | 246 +++++
11 files changed, 3779 insertions(+)
create mode 100644 drivers/staging/media/vxd/common/addr_alloc.c
create mode 100644 drivers/staging/media/vxd/common/addr_alloc.h
create mode 100644 drivers/staging/media/vxd/common/hash.c
create mode 100644 drivers/staging/media/vxd/common/hash.h
create mode 100644 drivers/staging/media/vxd/common/pool.c
create mode 100644 drivers/staging/media/vxd/common/pool.h
create mode 100644 drivers/staging/media/vxd/common/ra.c
create mode 100644 drivers/staging/media/vxd/common/ra.h
create mode 100644 drivers/staging/media/vxd/common/talmmu_api.c
create mode 100644 drivers/staging/media/vxd/common/talmmu_api.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 2668eeb89a34..2b0d0708d852 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19537,8 +19537,12 @@ M: Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
L: linux-media@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/media/img,d5520-vxd.yaml
+F: drivers/staging/media/vxd/common/addr_alloc.c
+F: drivers/staging/media/vxd/common/addr_alloc.h
F: drivers/staging/media/vxd/common/dq.c
F: drivers/staging/media/vxd/common/dq.h
+F: drivers/staging/media/vxd/common/hash.c
+F: drivers/staging/media/vxd/common/hash.h
F: drivers/staging/media/vxd/common/idgen_api.c
F: drivers/staging/media/vxd/common/idgen_api.h
F: drivers/staging/media/vxd/common/img_mem_man.c
@@ -19548,6 +19552,12 @@ F: drivers/staging/media/vxd/common/imgmmu.c
F: drivers/staging/media/vxd/common/imgmmu.h
F: drivers/staging/media/vxd/common/lst.c
F: drivers/staging/media/vxd/common/lst.h
+F: drivers/staging/media/vxd/common/pool.c
+F: drivers/staging/media/vxd/common/pool.h
+F: drivers/staging/media/vxd/common/ra.c
+F: drivers/staging/media/vxd/common/ra.h
+F: drivers/staging/media/vxd/common/talmmu_api.c
+F: drivers/staging/media/vxd/common/talmmu_api.h
F: drivers/staging/media/vxd/common/work_queue.c
F: drivers/staging/media/vxd/common/work_queue.h
F: drivers/staging/media/vxd/decoder/hw_control.c
diff --git a/drivers/staging/media/vxd/common/addr_alloc.c b/drivers/staging/media/vxd/common/addr_alloc.c
new file mode 100644
index 000000000000..393d309b2c0c
--- /dev/null
+++ b/drivers/staging/media/vxd/common/addr_alloc.c
@@ -0,0 +1,499 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Address allocation APIs - used to manage address allocation
+ * with a number of predefined regions.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+
+#include <linux/slab.h>
+#include <linux/printk.h>
+#include <linux/mutex.h>
+#include <linux/dma-mapping.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "addr_alloc.h"
+#include "hash.h"
+#include "img_errors.h"
+
+/* Global context. */
+static struct addr_context global_ctx = {0};
+/* Sub-system initialized. */
+static int global_initialized;
+/* Count of contexts. */
+static unsigned int num_ctx;
+/* Global mutex */
+static struct mutex *global_lock;
+
+/**
+ * addr_initialise - addr_initialise
+ */
+
+int addr_initialise(void)
+{
+ unsigned int result = IMG_ERROR_ALREADY_INITIALISED;
+
+ /* If we are not initialized */
+ if (!global_initialized)
+ result = addr_cx_initialise(&global_ctx);
+ return result;
+}
+
+int addr_cx_initialise(struct addr_context * const context)
+{
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!context)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (!global_initialized) {
+ /* Initialise context */
+ memset(context, 0x00, sizeof(struct addr_context));
+
+ /* If no mutex associated with this resource */
+ if (!global_lock) {
+ /* Create one */
+
+ global_lock = kzalloc(sizeof(*global_lock), GFP_KERNEL);
+ if (!global_lock)
+ return -ENOMEM;
+
+ mutex_init(global_lock);
+ }
+
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+
+ /* Initialise the hash functions. */
+ result = vid_hash_initialise();
+ if (result != IMG_SUCCESS) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ /* Initialise the arena functions */
+ result = vid_ra_initialise();
+ if (result != IMG_SUCCESS) {
+ mutex_unlock(global_lock);
+ result = vid_hash_finalise();
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ /* We are now initialized */
+ global_initialized = TRUE;
+ result = IMG_SUCCESS;
+ } else {
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+ }
+
+ num_ctx++;
+ mutex_unlock(global_lock);
+
+ return result;
+}
+
+int addr_deinitialise(void)
+{
+ return addr_cx_deinitialise(&global_ctx);
+}
+
+int addr_cx_deinitialise(struct addr_context * const context)
+{
+ struct addr_region *tmp_region = NULL;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!context)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (global_initialized) {
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+
+ tmp_region = context->regions;
+
+ /* Delete all arena structure */
+ if (context->default_region)
+ result = vid_ra_delete(context->default_region->arena);
+
+ while (tmp_region) {
+ result = vid_ra_delete(tmp_region->arena);
+ tmp_region = tmp_region->nxt_region;
+ }
+
+ if (num_ctx != 0)
+ num_ctx--;
+
+ result = IMG_SUCCESS;
+ if (num_ctx == 0) {
+ /* Free off resources */
+ result = vid_hash_finalise();
+ result = vid_ra_deinit();
+ global_initialized = FALSE;
+
+ mutex_unlock(global_lock);
+ mutex_destroy(global_lock);
+ kfree(global_lock);
+ global_lock = NULL;
+ } else {
+ mutex_unlock(global_lock);
+ }
+ }
+
+ return result;
+}
+
+int addr_define_mem_region(struct addr_region * const region)
+{
+ return addr_cx_define_mem_region(&global_ctx, region);
+}
+
+int addr_cx_define_mem_region(struct addr_context * const context,
+ struct addr_region * const region)
+{
+ struct addr_region *tmp_region = NULL;
+ unsigned int result = IMG_SUCCESS;
+
+ if (!context || !region)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+
+ tmp_region = context->regions;
+
+ /* Ensure the link to the next is NULL */
+ region->nxt_region = NULL;
+
+ /* If this is the default memory region */
+ if (!region->name) {
+ /* Should not previously have been defined */
+ if (context->default_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ context->default_region = region;
+ context->no_regions++;
+
+ /*
+ * Create an arena for memory allocation
+ * name of resource arena for debug
+ * start of resource
+ * size of resource
+ * allocation quantum
+ * import allocator
+ * import deallocator
+ * import handle
+ */
+ result = vid_ra_create("memory",
+ region->base_addr,
+ region->size,
+ 1,
+ NULL,
+ NULL,
+ NULL,
+ ®ion->arena);
+
+ if (result != IMG_SUCCESS) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ } else {
+ /*
+ * Run down the list of existing named regions
+ * to check if there is a region with this name
+ */
+ while (tmp_region &&
+ (strcmp(region->name, tmp_region->name) != 0) &&
+ tmp_region->nxt_region) {
+ tmp_region = tmp_region->nxt_region;
+ }
+
+ /* If we have items in the list */
+ if (tmp_region) {
+ /*
+ * Check we didn't stop because the name
+ * clashes with one already defined.
+ */
+
+ if (strcmp(region->name, tmp_region->name) == 0 ||
+ tmp_region->nxt_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ /* Add to end of list */
+ tmp_region->nxt_region = region;
+ } else {
+ /* Add to head of list */
+ context->regions = region;
+ }
+
+ context->no_regions++;
+
+ /*
+ * Create an arena for memory allocation
+ * name of resource arena for debug
+ * start of resource
+ * size of resource
+ * allocation quantum
+ * import allocator
+ * import deallocator
+ * import handle
+ */
+ result = vid_ra_create(region->name,
+ region->base_addr,
+ region->size,
+ 1,
+ NULL,
+ NULL,
+ NULL,
+ ®ion->arena);
+
+ if (result != IMG_SUCCESS) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ }
+
+ mutex_unlock(global_lock);
+
+ /* Check the arean was created OK */
+ if (!region->arena)
+ return IMG_ERROR_UNEXPECTED_STATE;
+
+ return result;
+}
+
+int addr_malloc(const unsigned char * const name,
+ unsigned long long size,
+ unsigned long long * const base_adr)
+{
+ return addr_cx_malloc(&global_ctx, name, size, base_adr);
+}
+
+int addr_cx_malloc(struct addr_context * const context,
+ const unsigned char * const name,
+ unsigned long long size,
+ unsigned long long * const base_adr)
+{
+ unsigned int result = IMG_ERROR_FATAL;
+ struct addr_region *tmp_region = NULL;
+
+ if (!context || !base_adr || !name)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ *(base_adr) = (unsigned long long)-1LL;
+
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+
+ tmp_region = context->regions;
+
+ /*
+ * Run down the list of existing named
+ * regions to locate this
+ */
+ while (tmp_region && (strcmp(name, tmp_region->name) != 0) && (tmp_region->nxt_region))
+ tmp_region = tmp_region->nxt_region;
+
+ /* If there was no match. */
+ if (!tmp_region || (strcmp(name, tmp_region->name) != 0)) {
+ /* Use the default */
+ if (!context->default_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ tmp_region = context->default_region;
+ }
+
+ if (!tmp_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ /* Allocate size + guard band */
+ result = vid_ra_alloc(tmp_region->arena,
+ size + tmp_region->guard_band,
+ NULL,
+ NULL,
+ SEQUENTIAL_ALLOCATION,
+ 1,
+ base_adr);
+ if (result != IMG_SUCCESS) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_OUT_OF_MEMORY;
+ }
+
+ mutex_unlock(global_lock);
+
+ return result;
+}
+
+int addr_cx_malloc_res(struct addr_context * const context,
+ const unsigned char * const name,
+ unsigned long long size,
+ unsigned long long * const base_adr)
+{
+ unsigned int result = IMG_ERROR_FATAL;
+ struct addr_region *tmp_region = NULL;
+
+ if (!context || !base_adr || !name)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+
+ tmp_region = context->regions;
+ /* If the allocation is for the default region */
+ /*
+ * Run down the list of existing named
+ * regions to locate this
+ */
+ while (tmp_region && (strcmp(name, tmp_region->name) != 0) && (tmp_region->nxt_region))
+ tmp_region = tmp_region->nxt_region;
+
+ /* If there was no match. */
+ if (!tmp_region || (strcmp(name, tmp_region->name) != 0)) {
+ /* Use the default */
+ if (!context->default_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ tmp_region = context->default_region;
+ }
+ if (!tmp_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ /* Allocate size + guard band */
+ result = vid_ra_alloc(tmp_region->arena, size + tmp_region->guard_band,
+ NULL, NULL, SEQUENTIAL_ALLOCATION, 1, base_adr);
+ if (result != IMG_SUCCESS) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_OUT_OF_MEMORY;
+ }
+ mutex_unlock(global_lock);
+
+ return result;
+}
+
+int addr_cx_malloc_align_res(struct addr_context * const context,
+ const unsigned char * const name,
+ unsigned long long size,
+ unsigned long long alignment,
+ unsigned long long * const base_adr)
+{
+ unsigned int result;
+ struct addr_region *tmp_region = NULL;
+
+ if (!context || !base_adr || !name)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+
+ tmp_region = context->regions;
+
+ /*
+ * Run down the list of existing named
+ * regions to locate this
+ */
+ while (tmp_region &&
+ (strcmp(name, tmp_region->name) != 0) &&
+ (tmp_region->nxt_region)) {
+ tmp_region = tmp_region->nxt_region;
+ }
+ /* If there was no match. */
+ if (!tmp_region ||
+ (strcmp(name, tmp_region->name) != 0)) {
+ /* Use the default */
+ if (!context->default_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ tmp_region = context->default_region;
+ }
+
+ if (!tmp_region) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ /* Allocate size + guard band */
+ result = vid_ra_alloc(tmp_region->arena,
+ size + tmp_region->guard_band,
+ NULL,
+ NULL,
+ SEQUENTIAL_ALLOCATION,
+ alignment,
+ base_adr);
+ if (result != IMG_SUCCESS) {
+ mutex_unlock(global_lock);
+ return IMG_ERROR_OUT_OF_MEMORY;
+ }
+
+ mutex_unlock(global_lock);
+
+ return result;
+}
+
+int addr_free(const unsigned char * const name, unsigned long long addr)
+{
+ return addr_cx_free(&global_ctx, name, addr);
+}
+
+int addr_cx_free(struct addr_context * const context,
+ const unsigned char * const name,
+ unsigned long long addr)
+{
+ struct addr_region *tmp_region;
+ unsigned int result;
+
+ if (!context)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ tmp_region = context->regions;
+
+ mutex_lock_nested(global_lock, SUBCLASS_ADDR_ALLOC);
+
+ /* If the allocation is for the default region */
+ if (!name) {
+ if (!context->default_region) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ goto error;
+ }
+ tmp_region = context->default_region;
+ } else {
+ /*
+ * Run down the list of existing named
+ * regions to locate this
+ */
+ while (tmp_region &&
+ (strcmp(name, tmp_region->name) != 0) &&
+ tmp_region->nxt_region) {
+ tmp_region = tmp_region->nxt_region;
+ }
+
+ /* If there was no match */
+ if (!tmp_region || (strcmp(name, tmp_region->name) != 0)) {
+ /* Use the default */
+ if (!context->default_region) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ goto error;
+ }
+ tmp_region = context->default_region;
+ }
+ }
+
+ /* Free the address */
+ result = vid_ra_free(tmp_region->arena, addr);
+
+error:
+ mutex_unlock(global_lock);
+ return result;
+}
diff --git a/drivers/staging/media/vxd/common/addr_alloc.h b/drivers/staging/media/vxd/common/addr_alloc.h
new file mode 100644
index 000000000000..387418b124e4
--- /dev/null
+++ b/drivers/staging/media/vxd/common/addr_alloc.h
@@ -0,0 +1,238 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Address allocation management API.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+#ifndef __ADDR_ALLOC_H__
+#define __ADDR_ALLOC_H__
+
+#include <linux/types.h>
+#include "ra.h"
+
+/* Defines whether sequential or random allocation is used */
+enum {
+ SEQUENTIAL_ALLOCATION,
+ RANDOM_ALLOCATION,
+ RANDOM_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/**
+ * struct addr_region - Memory region structure
+ *@name: A pointer to a sring containing the name of the region.
+ * NULL for the default memory region.
+ *@base_addr: The base address of the memory region.
+ *@size: The size of the memory region.
+ *@guard_band: The size of any guard band to be used.
+ * Guard bands can be useful in separating block allocations
+ * and allows the caller to detect erroneous accesses
+ * into these areas.
+ *@nxt_region:Used internally by the ADDR API.A pointer used to point
+ * to the next memory region.
+ *@arena: Used internally by the ADDR API. A to a structure used to
+ * maintain and perform address allocation.
+ *
+ * This structure contains information about the memory region.
+ */
+struct addr_region {
+ unsigned char *name;
+ unsigned long long base_addr;
+ unsigned long long size;
+ unsigned int guard_band;
+ struct addr_region *nxt_region;
+ void *arena;
+};
+
+/*
+ * This structure contains the context for allocation.
+ *@regions: Pointer the first region in the list.
+ *@default_region: Pointer the default region.
+ *@no_regions: Number of regions currently available (including default)
+ */
+struct addr_context {
+ struct addr_region *regions;
+ struct addr_region *default_region;
+ unsigned int no_regions;
+};
+
+/*
+ * @Function ADDR_Initialise
+ * @Description
+ * This function is used to initialise the address alocation sub-system.
+ * NOTE: This function may be called multiple times. The initialisation only
+ * happens the first time it is called.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_initialise(void);
+
+/*
+ * @Function addr_deinitialise
+ * @Description
+ * This function is used to de-initialise the address alocation sub-system.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_deinitialise(void);
+
+/*
+ * @Function addr_define_mem_region
+ * @Description
+ * This function is used define a memory region.
+ * NOTE: The region structure MUST be defined in static memory as this
+ * is retained and used by the ADDR sub-system.
+ * NOTE: Invalid parameters are trapped by asserts.
+ * @Input region: A pointer to a region structure.
+ * @Return IMG_RESULT : IMG_SUCCESS or an error code.
+ */
+int addr_define_mem_region(struct addr_region * const region);
+
+/*
+ * @Function addr_malloc
+ * @Description
+ * This function is used allocate space within a memory region.
+ * NOTE: Allocation failures or invalid parameters are trapped by asserts.
+ * @Input name: Is a pointer the name of the memory region.
+ * NULL can be used to allocate space from the
+ * default memory region.
+ * @Input size: The size (in bytes) of the allocation.
+ * @Output base_adr : The address of the allocated space.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_malloc(const unsigned char *const name,
+ unsigned long long size,
+ unsigned long long *const base_adr);
+
+/*
+ * @Function addr_free
+ * @Description
+ * This function is used free a previously allocate space within
+ * a memory region.
+ * NOTE: Invalid parameters are trapped by asserts.
+ * @Input name: Is a pointer to the name of the memory region.
+ * NULL is used to free space from the default memory region.
+ *@Input addr: The address allocated.
+ *@Return IMG_SUCCESS or an error code.
+ */
+int addr_free(const unsigned char * const name, unsigned long long addr);
+
+/*
+ * @Function addr_cx_initialise
+ * @Description
+ * This function is used to initialise the address allocation sub-system with
+ * an external context structure.
+ * NOTE: This function should be call only once for the context.
+ * @Input context : Pointer to context structure.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_cx_initialise(struct addr_context * const context);
+
+/*
+ * @Function addr_cx_deinitialise
+ * @Description
+ * This function is used to de-initialise the address allocation
+ * sub-system with an external context structure.
+ * @Input context : Pointer to context structure.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_cx_deinitialise(struct addr_context * const context);
+
+/*
+ * @Function addr_cx_define_mem_region
+ * @Description
+ * This function is used define a memory region with an external
+ * context structure.
+ * NOTE: The region structure MUST be defined in static memory as this
+ * is retained and used by the ADDR sub-system.
+ * NOTE: Invalid parameters are trapped by asserts.
+ * @Input context : Pointer to context structure.
+ * @Input region : A pointer to a region structure.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_cx_define_mem_region(struct addr_context *const context,
+ struct addr_region *const region);
+
+/*
+ * @Function addr_cx_malloc
+ * @Description
+ * This function is used allocate space within a memory region with
+ * an external context structure.
+ * NOTE: Allocation failures or invalid parameters are trapped by asserts.
+ * @Input context : Pointer to context structure.
+ * @Input name : Is a pointer the name of the memory region.
+ * NULL can be used to allocate space from the
+ * default memory region.
+ * @Input size : The size (in bytes) of the allocation.
+ * @Output base_adr : The address of the allocated space.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_cx_malloc(struct addr_context * const context,
+ const unsigned char *const name,
+ unsigned long long size,
+ unsigned long long *const base_adr);
+
+/*
+ * @Function addr_cx_malloc_res
+ * @Description
+ * This function is used allocate space within a memory region with
+ * an external context structure.
+ * NOTE: Allocation failures are returned in IMG_RESULT, however invalid
+ * parameters are trapped by asserts.
+ * @Input context : Pointer to context structure.
+ * @Input name : Is a pointer the name of the memory region.
+ * NULL can be used to allocate space from the
+ * default memory region.
+ * @Input size : The size (in bytes) of the allocation.
+ * @Input base_adr : Pointer to the address of the allocated space.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_cx_malloc_res(struct addr_context *const context,
+ const unsigned char *const name,
+ unsigned long long size,
+ unsigned long long * const base_adr);
+
+/*
+ * @Function addr_cx_malloc1_res
+ * @Description
+ * This function is used allocate space within a memory region with
+ * an external context structure.
+ * NOTE: Allocation failures are returned in IMG_RESULT, however invalid
+ * parameters are trapped by asserts.
+ * @Input context : Pointer to context structure.
+ * @Input name : Is a pointer the name of the memory region.
+ * NULL can be used to allocate space from the
+ * default memory region.
+ * @Input size : The size (in bytes) of the allocation.
+ * @Input alignment : The required byte alignment (1, 2, 4, 8, 16 etc).
+ * @Input base_adr : Pointer to the address of the allocated space.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_cx_malloc_align_res(struct addr_context *const context,
+ const unsigned char *const name,
+ unsigned long long size,
+ unsigned long long alignment,
+ unsigned long long *const base_adr);
+
+/*
+ * @Function addr_cx_free
+ * @Description
+ * This function is used free a previously allocate space within a memory region
+ * with an external context structure.
+ * NOTE: Invalid parameters are trapped by asserts.
+ * @Input context : Pointer to context structure.
+ * @Input name : Is a pointer the name of the memory region.
+ * NULL is used to free space from the
+ * default memory region.
+ * @Input addr : The address allocated.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int addr_cx_free(struct addr_context *const context,
+ const unsigned char *const name,
+ unsigned long long addr);
+
+#endif /* __ADDR_ALLOC_H__ */
diff --git a/drivers/staging/media/vxd/common/hash.c b/drivers/staging/media/vxd/common/hash.c
new file mode 100644
index 000000000000..1a03aecc34ef
--- /dev/null
+++ b/drivers/staging/media/vxd/common/hash.c
@@ -0,0 +1,481 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Self scaling hash tables.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+
+#include <linux/dma-mapping.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "hash.h"
+#include "img_errors.h"
+#include "pool.h"
+
+/* pool of struct hash objects */
+static struct pool *global_hashpool;
+
+/* pool of struct bucket objects */
+static struct pool *global_bucketpool;
+
+static int global_initialized;
+
+/* Each entry in a hash table is placed into a bucket */
+struct bucket {
+ struct bucket *next;
+ unsigned long long key;
+ unsigned long long value;
+};
+
+struct hash {
+ struct bucket **table;
+ unsigned int size;
+ unsigned int count;
+ unsigned int minimum_size;
+};
+
+/**
+ * hash_func - Hash function intended for hashing addresses.
+ * @vale : The key to hash.
+ * @size : The size of the hash table
+ */
+static unsigned int hash_func(unsigned long long vale,
+ unsigned int size)
+{
+ unsigned int hash = (unsigned int)(vale);
+
+ hash += (hash << 12);
+ hash ^= (hash >> 22);
+ hash += (hash << 4);
+ hash ^= (hash >> 9);
+ hash += (hash << 10);
+ hash ^= (hash >> 2);
+ hash += (hash << 7);
+ hash ^= (hash >> 12);
+ hash &= (size - 1);
+ return hash;
+}
+
+/*
+ * @Function hash_chain_insert
+ * @Description
+ * Hash function intended for hashing addresses.
+ * @Input bucket : The bucket
+ * @Input table : The hash table
+ * @Input size : The size of the hash table
+ * @Return IMG_SUCCESS or an error code.
+ */
+static int hash_chain_insert(struct bucket *bucket,
+ struct bucket **table,
+ unsigned int size)
+{
+ unsigned int idx;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!bucket || !table || !size) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ idx = hash_func(bucket->key, size);
+
+ if (idx < size) {
+ result = IMG_SUCCESS;
+ bucket->next = table[idx];
+ table[idx] = bucket;
+ }
+
+ return result;
+}
+
+/*
+ * @Function hash_rehash
+ * @Description
+ * Iterate over every entry in an old hash table and rehash into the new table.
+ * @Input old_table : The old hash table
+ * @Input old_size : The size of the old hash table
+ * @Input new_table : The new hash table
+ * @Input new_sz : The size of the new hash table
+ * @Return IMG_SUCCESS or an error code.
+ */
+static int hash_rehash(struct bucket **old_table,
+ unsigned int old_size,
+ struct bucket **new_table,
+ unsigned int new_sz)
+{
+ unsigned int idx;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!old_table || !new_table) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ for (idx = 0; idx < old_size; idx++) {
+ struct bucket *bucket;
+ struct bucket *nex_bucket;
+
+ bucket = old_table[idx];
+ while (bucket) {
+ nex_bucket = bucket->next;
+ result = hash_chain_insert(bucket, new_table, new_sz);
+ if (result != IMG_SUCCESS) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+ bucket = nex_bucket;
+ }
+ }
+ result = IMG_SUCCESS;
+
+ return result;
+}
+
+/*
+ * @Function hash_resize
+ * @Description
+ * Attempt to resize a hash table, failure to allocate a new larger hash table
+ * is not considered a hard failure. We simply continue and allow the table to
+ * fill up, the effect is to allow hash chains to become longer.
+ * @Input hash_arg : Pointer to the hash table
+ * @Input new_sz : The size of the new hash table
+ * @Return IMG_SUCCESS or an error code.
+ */
+static int hash_resize(struct hash *hash_arg,
+ unsigned int new_sz)
+{
+ unsigned int malloc_sz = 0;
+ unsigned int result = IMG_ERROR_FATAL;
+ unsigned int idx;
+
+ if (!hash_arg) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ if (new_sz != hash_arg->size) {
+ struct bucket **new_bkt_table;
+
+ malloc_sz = (sizeof(struct bucket *) * new_sz);
+ new_bkt_table = kmalloc(malloc_sz, GFP_KERNEL);
+
+ if (!new_bkt_table) {
+ result = IMG_ERROR_MALLOC_FAILED;
+ return result;
+ }
+
+ for (idx = 0; idx < new_sz; idx++)
+ new_bkt_table[idx] = NULL;
+
+ result = hash_rehash(hash_arg->table,
+ hash_arg->size,
+ new_bkt_table,
+ new_sz);
+
+ if (result != IMG_SUCCESS) {
+ kfree(new_bkt_table);
+ new_bkt_table = NULL;
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+
+ kfree(hash_arg->table);
+ hash_arg->table = new_bkt_table;
+ hash_arg->size = new_sz;
+ }
+ result = IMG_SUCCESS;
+
+ return result;
+}
+
+static unsigned int private_max(unsigned int a, unsigned int b)
+{
+ unsigned int ret = (a > b) ? a : b;
+ return ret;
+}
+
+/*
+ * @Function vid_hash_initialise
+ * @Description
+ * To initialise the hash module.
+ * @Input None
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_initialise(void)
+{
+ unsigned int result = IMG_ERROR_ALREADY_COMPLETE;
+
+ if (!global_initialized) {
+ if (global_hashpool || global_bucketpool) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+
+ result = pool_create("img-hash",
+ sizeof(struct hash),
+ &global_hashpool);
+
+ if (result != IMG_SUCCESS) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+
+ result = pool_create("img-sBucket",
+ sizeof(struct bucket),
+ &global_bucketpool);
+ if (result != IMG_SUCCESS) {
+ if (global_bucketpool) {
+ result = pool_delete(global_bucketpool);
+ global_bucketpool = NULL;
+ }
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+ global_initialized = true;
+ result = IMG_SUCCESS;
+ }
+ return result;
+}
+
+/*
+ * @Function vid_hash_finalise
+ * @Description
+ * To finalise the hash module. All allocated hash tables should
+ * be deleted before calling this function.
+ * @Input None
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_finalise(void)
+{
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (global_initialized) {
+ if (global_hashpool) {
+ result = pool_delete(global_hashpool);
+ if (result != IMG_SUCCESS)
+ return result;
+
+ global_hashpool = NULL;
+ }
+
+ if (global_bucketpool) {
+ result = pool_delete(global_bucketpool);
+ if (result != IMG_SUCCESS)
+ return result;
+
+ global_bucketpool = NULL;
+ }
+ global_initialized = false;
+ result = IMG_SUCCESS;
+ }
+
+ return result;
+}
+
+/*
+ * @Function vid_hash_create
+ * @Description
+ * Create a self scaling hash table.
+ * @Input initial_size : Initial and minimum size of the hash table.
+ * @Output hash_arg : Will countin the hash table handle or NULL.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_create(unsigned int initial_size,
+ struct hash ** const hash_arg)
+{
+ unsigned int idx;
+ unsigned int tbl_sz = 0;
+ unsigned int result = IMG_ERROR_FATAL;
+ struct hash *local_hash = NULL;
+
+ if (!hash_arg) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ if (global_initialized) {
+ pool_alloc(global_hashpool, ((void **)&local_hash));
+ if (!local_hash) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ *hash_arg = NULL;
+ return result;
+ }
+
+ local_hash->count = 0;
+ local_hash->size = initial_size;
+ local_hash->minimum_size = initial_size;
+
+ tbl_sz = (sizeof(struct bucket *) * local_hash->size);
+ local_hash->table = kmalloc(tbl_sz, GFP_KERNEL);
+ if (!local_hash->table) {
+ result = pool_free(global_hashpool, local_hash);
+ if (result != IMG_SUCCESS)
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ result |= IMG_ERROR_MALLOC_FAILED;
+ *hash_arg = NULL;
+ return result;
+ }
+
+ for (idx = 0; idx < local_hash->size; idx++)
+ local_hash->table[idx] = NULL;
+
+ *hash_arg = local_hash;
+ result = IMG_SUCCESS;
+ }
+ return result;
+}
+
+/*
+ * @Function vid_hash_delete
+ * @Description
+ * To delete a hash table, all entries in the table should be
+ * removed before calling this function.
+ * @Input hash_arg : Hash table pointer
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_delete(struct hash * const hash_arg)
+{
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!hash_arg) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ if (global_initialized) {
+ if (hash_arg->count != 0) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+
+ kfree(hash_arg->table);
+ hash_arg->table = NULL;
+
+ result = pool_free(global_hashpool, hash_arg);
+ if (result != IMG_SUCCESS) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+ }
+ return result;
+}
+
+/*
+ * @Function vid_hash_insert
+ * @Description
+ * To insert a key value pair into a hash table.
+ * @Input hash_arg : Hash table pointer
+ * @Input key : Key value
+ * @Input value : The value associated with the key.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_insert(struct hash * const hash_arg,
+ unsigned long long key,
+ unsigned long long value)
+{
+ struct bucket *ps_bucket = NULL;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!hash_arg) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ if (global_initialized) {
+ result = pool_alloc(global_bucketpool, ((void **)&ps_bucket));
+ if (result != IMG_SUCCESS || !ps_bucket) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+ ps_bucket->next = NULL;
+ ps_bucket->key = key;
+ ps_bucket->value = value;
+
+ result = hash_chain_insert(ps_bucket,
+ hash_arg->table,
+ hash_arg->size);
+
+ if (result != IMG_SUCCESS) {
+ pool_free(global_bucketpool, ((void **)&ps_bucket));
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+
+ hash_arg->count++;
+
+ /* check if we need to think about re-balancing */
+ if ((hash_arg->count << 1) > hash_arg->size) {
+ result = hash_resize(hash_arg, (hash_arg->size << 1));
+ if (result != IMG_SUCCESS) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+ }
+ result = IMG_SUCCESS;
+ }
+ return result;
+}
+
+/*
+ * @Function vid_hash_remove
+ * @Description
+ * To remove a key value pair from a hash table
+ * @Input hash_arg : Hash table pointer
+ * @Input key : Key value
+ * @Input ret_result : 0 if the key is missing or the value
+ * associated with the key.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_remove(struct hash * const hash_arg,
+ unsigned long long key,
+ unsigned long * const ret_result)
+{
+ unsigned int idx;
+ unsigned int tmp1 = 0;
+ unsigned int tmp2 = 0;
+ unsigned int result = IMG_ERROR_FATAL;
+ struct bucket **bucket = NULL;
+
+ if (!hash_arg) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ idx = hash_func(key, hash_arg->size);
+
+ for (bucket = &hash_arg->table[idx]; (*bucket) != NULL;
+ bucket = &((*bucket)->next)) {
+ if ((*bucket)->key == key) {
+ struct bucket *ps_bucket = (*bucket);
+
+ unsigned long long value = ps_bucket->value;
+
+ *bucket = ps_bucket->next;
+ result = pool_free(global_bucketpool, ps_bucket);
+
+ hash_arg->count--;
+
+ /* check if we need to think about re-balencing */
+ if (hash_arg->size > (hash_arg->count << 2) &&
+ hash_arg->size > hash_arg->minimum_size) {
+ tmp1 = (hash_arg->size >> 1);
+ tmp2 = hash_arg->minimum_size;
+ result = hash_resize(hash_arg,
+ private_max(tmp1, tmp2));
+ }
+ *ret_result = value;
+ result = IMG_SUCCESS;
+ break;
+ }
+ }
+ return result;
+}
diff --git a/drivers/staging/media/vxd/common/hash.h b/drivers/staging/media/vxd/common/hash.h
new file mode 100644
index 000000000000..91034d1ba441
--- /dev/null
+++ b/drivers/staging/media/vxd/common/hash.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Self scaling hash tables.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+#ifndef _HASH_H_
+#define _HASH_H_
+
+#include <linux/types.h>
+struct hash;
+
+/**
+ * vid_hash_initialise - VID_HASH_Initialise
+ * @Input None
+ *
+ * To initialise the hash module.
+ */
+int vid_hash_initialise(void);
+
+/*
+ * @Function VID_HASH_Finalise
+ * @Description
+ * To finalise the hash module. All allocated hash tables should
+ * be deleted before calling this function.
+ * @Input None
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_finalise(void);
+
+/*
+ * @Function VID_HASH_Create
+ * @Description
+ * Create a self scaling hash table.
+ * @Input initial_size : Initial and minimum size of the hash table.
+ * @Output hash : Hash table handle or NULL.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_create(unsigned int initial_size,
+ struct hash ** const hash_hndl);
+
+/*
+ * @Function VID_HASH_Delete
+ * @Description
+ * To delete a hash table, all entries in the table should be
+ * removed before calling this function.
+ * @Input hash : Hash table pointer
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_delete(struct hash * const ps_hash);
+
+/*
+ * @Function VID_HASH_Insert
+ * @Description
+ * To insert a key value pair into a hash table.
+ * @Input ps_hash : Hash table pointer
+ * @Input key : Key value
+ * @Input value : The value associated with the key.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_insert(struct hash * const ps_hash,
+ unsigned long long key,
+ unsigned long long value);
+
+/*
+ * @Function VID_HASH_Remove
+ * @Description
+ * To remove a key value pair from a hash table
+ * @Input ps_hash : Hash table pointer
+ * @Input key : Key value
+ * @Input result : 0 if the key is missing or the value
+ * associated with the key.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int vid_hash_remove(struct hash * const ps_hash,
+ unsigned long long key,
+ unsigned long * const result);
+
+#endif /* _HASH_H_ */
diff --git a/drivers/staging/media/vxd/common/pool.c b/drivers/staging/media/vxd/common/pool.c
new file mode 100644
index 000000000000..c0cb1e465c50
--- /dev/null
+++ b/drivers/staging/media/vxd/common/pool.c
@@ -0,0 +1,228 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Object Pool Memory Allocator
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+
+#include <linux/dma-mapping.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "img_errors.h"
+#include "pool.h"
+
+#define BUFF_MAX_SIZE 4096
+#define BUFF_MAX_GROW 32
+
+/* 64 bits */
+#define ALIGN_SIZE (sizeof(long long) - 1)
+
+struct pool {
+ unsigned char *name;
+ unsigned int size;
+ unsigned int grow;
+ struct buffer *buffers;
+ struct object *objects;
+};
+
+struct buffer {
+ struct buffer *next;
+};
+
+struct object {
+ struct object *next;
+};
+
+static inline unsigned char *strdup_cust(const unsigned char *str)
+{
+ unsigned char *r = kmalloc(strlen(str) + 1, GFP_KERNEL);
+
+ if (r)
+ strcpy(r, str);
+ return r;
+}
+
+/*
+ * pool_create - Create an sObject pool
+ * @name: Name of sObject pool for diagnostic purposes
+ * @obj_size: size of each sObject in the pool in bytes
+ * @pool_hdnl: Will contain NULL or sObject pool handle
+ *
+ * This function Create an sObject pool
+ */
+
+int pool_create(const unsigned char * const name,
+ unsigned int obj_size,
+ struct pool ** const pool_hdnl)
+{
+ struct pool *local_pool = NULL;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!name || !pool_hdnl) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ local_pool = kmalloc((sizeof(*local_pool)), GFP_KERNEL);
+ if (!local_pool) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ local_pool->name = strdup_cust((unsigned char *)name);
+ local_pool->size = obj_size;
+ local_pool->buffers = NULL;
+ local_pool->objects = NULL;
+ local_pool->grow =
+ (BUFF_MAX_SIZE - sizeof(struct buffer)) /
+ (obj_size + ALIGN_SIZE);
+
+ if (local_pool->grow == 0)
+ local_pool->grow = 1;
+ else if (local_pool->grow > BUFF_MAX_GROW)
+ local_pool->grow = BUFF_MAX_GROW;
+
+ *pool_hdnl = local_pool;
+ result = IMG_SUCCESS;
+
+ return result;
+}
+
+/*
+ * @Function pool_delete
+ * @Description
+ * Delete an sObject pool. All psObjects allocated from the pool must
+ * be free'd with pool_free() before deleting the sObject pool.
+ * @Input pool : Object Pool pointer
+ * @Return IMG_SUCCESS or an error code.
+ */
+int pool_delete(struct pool * const pool_arg)
+{
+ struct buffer *local_buf = NULL;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!pool_arg) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ local_buf = pool_arg->buffers;
+ while (local_buf) {
+ local_buf = local_buf->next;
+ kfree(pool_arg->buffers);
+ pool_arg->buffers = local_buf;
+ }
+
+ kfree(pool_arg->name);
+ pool_arg->name = NULL;
+
+ kfree(pool_arg);
+ result = IMG_SUCCESS;
+
+ return result;
+}
+
+/*
+ * @Function pool_alloc
+ * @Description
+ * Allocate an sObject from an sObject pool.
+ * @Input pool_arg : Object Pool
+ * @Output obj_hndl : Pointer containing the handle to the
+ * object created or IMG_NULL
+ * @Return IMG_SUCCESS or an error code.
+ */
+int pool_alloc(struct pool * const pool_arg,
+ void ** const obj_hndl)
+{
+ struct object *local_obj1 = NULL;
+ struct buffer *local_buf = NULL;
+ unsigned int idx = 0;
+ unsigned int sz = 0;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!pool_arg || !obj_hndl) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ if (!pool_arg->objects) {
+ sz = (pool_arg->size + ALIGN_SIZE);
+ sz *= (pool_arg->grow + sizeof(struct buffer));
+ local_buf = kmalloc(sz, GFP_KERNEL);
+ if (!local_buf) {
+ result = IMG_ERROR_MALLOC_FAILED;
+ return result;
+ }
+
+ local_buf->next = pool_arg->buffers;
+ pool_arg->buffers = local_buf;
+
+ for (idx = 0; idx < pool_arg->grow; idx++) {
+ struct object *local_obj2;
+ unsigned char *temp_ptr = NULL;
+
+ local_obj2 = (struct object *)(((unsigned char *)(local_buf + 1))
+ + (idx * (pool_arg->size + ALIGN_SIZE)));
+
+ temp_ptr = (unsigned char *)local_obj2;
+ if ((unsigned long)temp_ptr & ALIGN_SIZE) {
+ temp_ptr += ((ALIGN_SIZE + 1)
+ - ((unsigned long)temp_ptr & ALIGN_SIZE));
+ local_obj2 = (struct object *)temp_ptr;
+ }
+
+ local_obj2->next = pool_arg->objects;
+ pool_arg->objects = local_obj2;
+ }
+ }
+
+ if (!pool_arg->objects) {
+ result = IMG_ERROR_UNEXPECTED_STATE;
+ return result;
+ }
+
+ local_obj1 = pool_arg->objects;
+ pool_arg->objects = local_obj1->next;
+
+ *obj_hndl = (void *)(local_obj1);
+ result = IMG_SUCCESS;
+
+ return result;
+}
+
+/*
+ * @Function pool_free
+ * @Description
+ * Free an sObject previously allocated from an sObject pool.
+ * @Input pool_arg : Object Pool pointer.
+ * @Output h_object : Handle to the object to be freed.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int pool_free(struct pool * const pool_arg,
+ void * const obj_hndl)
+{
+ struct object *object = NULL;
+ unsigned int result = IMG_ERROR_FATAL;
+
+ if (!pool_arg || !obj_hndl) {
+ result = IMG_ERROR_INVALID_PARAMETERS;
+ return result;
+ }
+
+ object = (struct object *)obj_hndl;
+ object->next = pool_arg->objects;
+ pool_arg->objects = object;
+
+ result = IMG_SUCCESS;
+
+ return result;
+}
diff --git a/drivers/staging/media/vxd/common/pool.h b/drivers/staging/media/vxd/common/pool.h
new file mode 100644
index 000000000000..d22d15a2af54
--- /dev/null
+++ b/drivers/staging/media/vxd/common/pool.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Object Pool Memory Allocator header
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+#ifndef _pool_h_
+#define _pool_h_
+
+#include <linux/types.h>
+
+struct pool;
+
+/**
+ * pool_create - Create an sObject pool
+ * @name: Name of sObject pool for diagnostic purposes
+ * @obj_size: size of each sObject in the pool in bytes
+ * @pool: Will contain NULL or sObject pool handle
+ *
+ * Return IMG_SUCCESS or an error code.
+ */
+int pool_create(const unsigned char * const name,
+ unsigned int obj_size,
+ struct pool ** const pool);
+
+/*
+ * @Function pool_delete
+ * @Description
+ * Delete an sObject pool. All psObjects allocated from the pool must
+ * be free'd with pool_free() before deleting the sObject pool.
+ * @Input pool : Object Pool pointer
+ * @Return IMG_SUCCESS or an error code.
+ */
+int pool_delete(struct pool * const pool);
+
+/*
+ * @Function pool_alloc
+ * @Description
+ * Allocate an Object from an Object pool.
+ * @Input pool : Object Pool
+ * @Output obj_hdnl : Pointer containing the handle to the
+ * object created or IMG_NULL
+ * @Return IMG_SUCCESS or an error code.
+ */
+int pool_alloc(struct pool * const pool,
+ void ** const obj_hdnl);
+
+/*
+ * @Function pool_free
+ * @Description
+ * Free an sObject previously allocated from an sObject pool.
+ * @Input pool : Object Pool pointer.
+ * @Output obj_hdnl : Handle to the object to be freed.
+ * @Return IMG_SUCCESS or an error code.
+ */
+int pool_free(struct pool * const pool,
+ void * const obj_hdnl);
+
+#endif /* _pool_h_ */
diff --git a/drivers/staging/media/vxd/common/ra.c b/drivers/staging/media/vxd/common/ra.c
new file mode 100644
index 000000000000..ac07737f351b
--- /dev/null
+++ b/drivers/staging/media/vxd/common/ra.c
@@ -0,0 +1,972 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Implements generic resource allocation.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+
+#include <linux/dma-mapping.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "hash.h"
+#include "img_errors.h"
+#include "pool.h"
+#include "ra.h"
+
+static unsigned char global_init;
+
+/* pool of struct arena's */
+static struct pool *global_pool_arena;
+
+/* pool of struct boundary tag */
+static struct pool *global_pool_bt;
+
+/**
+ * ra_request_alloc_fail - ra_request_alloc_fail
+ * @import_hdnl : Callback handle.
+ * @requested_size : Requested allocation size.
+ * @ref : Pointer to user reference data.
+ * @alloc_flags : Allocation flags.
+ * @actual_size : Pointer to contain the actual allocated size.
+ * @base_addr : Allocation base(always 0,it is failing).
+ *
+ * Default callback allocator used if no callback is specified, always fails
+ * to allocate further resources to the arena.
+ */
+static int ra_request_alloc_fail(void *import_hdnl,
+ unsigned long long requested_size,
+ unsigned long long *actual_size,
+ void **ref,
+ unsigned int alloc_flags,
+ unsigned long long *base_addr)
+{
+ if (base_addr)
+ *base_addr = 0;
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function ra_log2
+ * @Description
+ * Calculates the Log2(n) with n being a 64-bit value.
+ *
+ * @Input value : Input value.
+ * @Output None
+ * @Return result : Log2(ui64Value).
+ */
+
+static unsigned int ra_log2(unsigned long long value)
+{
+ int res = 0;
+
+ value >>= 1;
+ while (value > 0) {
+ value >>= 1;
+ res++;
+ }
+ return res;
+}
+
+/*
+ * @Function ra_segment_list_insert_after
+ * @Description Insert a boundary tag into an arena segment list after a
+ * specified boundary tag.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input bt_here_arg : The boundary tag before which psBTToInsert
+ * will be added .
+ * @Input bt_to_insert_arg : The boundary tag to insert.
+ * @Output None
+ * @Return None
+ */
+static void ra_segment_list_insert_after(struct arena *arena_arg,
+ struct btag *bt_here_arg,
+ struct btag *bt_to_insert_arg)
+{
+ bt_to_insert_arg->nxt_seg = bt_here_arg->nxt_seg;
+ bt_to_insert_arg->prv_seg = bt_here_arg;
+
+ if (!bt_here_arg->nxt_seg)
+ arena_arg->tail_seg = bt_to_insert_arg;
+ else
+ bt_here_arg->nxt_seg->prv_seg = bt_to_insert_arg;
+
+ bt_here_arg->nxt_seg = bt_to_insert_arg;
+}
+
+/*
+ * @Function ra_segment_list_insert
+ * @Description
+ * Insert a boundary tag into an arena segment list at the appropriate point.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input bt_to_insert_arg : The boundary tag to insert.
+ * @Output None
+ * @Return None
+ */
+static void ra_segment_list_insert(struct arena *arena_arg,
+ struct btag *bt_to_insert_arg)
+{
+ /* insert into the segment chain */
+ if (!arena_arg->head_seg) {
+ arena_arg->head_seg = bt_to_insert_arg;
+ arena_arg->tail_seg = bt_to_insert_arg;
+ bt_to_insert_arg->nxt_seg = NULL;
+ bt_to_insert_arg->prv_seg = NULL;
+ } else {
+ struct btag *bt_scan = arena_arg->head_seg;
+
+ while (bt_scan->nxt_seg &&
+ bt_to_insert_arg->base >=
+ bt_scan->nxt_seg->base) {
+ bt_scan = bt_scan->nxt_seg;
+ }
+ ra_segment_list_insert_after(arena_arg,
+ bt_scan,
+ bt_to_insert_arg);
+ }
+}
+
+/*
+ * @Function ra_SegmentListRemove
+ * @Description
+ * Insert a boundary tag into an arena segment list at the appropriate point.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input bt_to_remove_arg : The boundary tag to insert.
+ * @Output None
+ * @Return None
+ */
+static void ra_segment_list_remove(struct arena *arena_arg,
+ struct btag *bt_to_remove_arg)
+{
+ if (!bt_to_remove_arg->prv_seg)
+ arena_arg->head_seg = bt_to_remove_arg->nxt_seg;
+ else
+ bt_to_remove_arg->prv_seg->nxt_seg = bt_to_remove_arg->nxt_seg;
+
+ if (!bt_to_remove_arg->nxt_seg)
+ arena_arg->tail_seg = bt_to_remove_arg->prv_seg;
+ else
+ bt_to_remove_arg->nxt_seg->prv_seg = bt_to_remove_arg->prv_seg;
+}
+
+/*
+ * @Function ra_segment_split
+ * @Description
+ * Split a segment into two, maintain the arena segment list.
+ * The boundary tag should not be in the free table. Neither the original or
+ * the new psBTNeighbour bounary tag will be in the free table.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input bt_to_split_arg : The boundary tag to split.
+ * The required segment size of boundary tag after the split.
+ * @Output None
+ * @Return btag *: New boundary tag.
+ */
+static struct btag *ra_segment_split(struct arena *arena_arg,
+ struct btag *bt_to_split_arg,
+ unsigned long long size)
+{
+ struct btag *local_bt_neighbour = NULL;
+ int res = IMG_ERROR_FATAL;
+
+ res = pool_alloc(global_pool_bt, ((void **)&local_bt_neighbour));
+ if (res != IMG_SUCCESS)
+ return NULL;
+
+ local_bt_neighbour->prv_seg = bt_to_split_arg;
+ local_bt_neighbour->nxt_seg = bt_to_split_arg->nxt_seg;
+ local_bt_neighbour->bt_type = RA_BOUNDARY_TAG_TYPE_FREE;
+ local_bt_neighbour->size = (bt_to_split_arg->size - size);
+ local_bt_neighbour->base = (bt_to_split_arg->base + size);
+ local_bt_neighbour->nxt_free = NULL;
+ local_bt_neighbour->prv_free = NULL;
+ local_bt_neighbour->ref = bt_to_split_arg->ref;
+
+ if (!bt_to_split_arg->nxt_seg)
+ arena_arg->tail_seg = local_bt_neighbour;
+ else
+ bt_to_split_arg->nxt_seg->prv_seg = local_bt_neighbour;
+
+ bt_to_split_arg->nxt_seg = local_bt_neighbour;
+ bt_to_split_arg->size = size;
+
+ return local_bt_neighbour;
+}
+
+/*
+ * @Function ra_free_list_insert
+ * @Description
+ * Insert a boundary tag into an arena free table.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input bt_arg : The boundary tag to insert into an arena
+ * free table.
+ * @Output None
+ * @Return None
+ */
+static void ra_free_list_insert(struct arena *arena_arg,
+ struct btag *bt_arg)
+{
+ unsigned int index = ra_log2(bt_arg->size);
+
+ bt_arg->bt_type = RA_BOUNDARY_TAG_TYPE_FREE;
+ if (index < FREE_TABLE_LIMIT)
+ bt_arg->nxt_free = arena_arg->head_free[index];
+ else
+ bt_arg->nxt_free = NULL;
+
+ bt_arg->prv_free = NULL;
+
+ if (index < FREE_TABLE_LIMIT) {
+ if (arena_arg->head_free[index])
+ arena_arg->head_free[index]->prv_free = bt_arg;
+ }
+
+ if (index < FREE_TABLE_LIMIT)
+ arena_arg->head_free[index] = bt_arg;
+}
+
+/*
+ * @Function ra_free_list_remove
+ * @Description
+ * Remove a boundary tag from an arena free table.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input bt_arg : The boundary tag to remove from
+ * an arena free table.
+ * @Output None
+ * @Return None
+ */
+static void ra_free_list_remove(struct arena *arena_arg,
+ struct btag *bt_arg)
+{
+ unsigned int index = ra_log2(bt_arg->size);
+
+ if (bt_arg->nxt_free)
+ bt_arg->nxt_free->prv_free = bt_arg->prv_free;
+
+ if (!bt_arg->prv_free && index < FREE_TABLE_LIMIT)
+ arena_arg->head_free[index] = bt_arg->nxt_free;
+ else if (bt_arg->prv_free)
+ bt_arg->prv_free->nxt_free = bt_arg->nxt_free;
+}
+
+/*
+ * @Function ra_build_span_marker
+ * @Description
+ * Construct a span marker boundary tag.
+ * @Input base : The base of the boundary tag.
+ * @Output None
+ * @Return btag * : New span marker boundary tag
+ */
+static struct btag *ra_build_span_marker(unsigned long long base)
+{
+ struct btag *local_bt = NULL;
+ int res = IMG_ERROR_FATAL;
+
+ res = pool_alloc(global_pool_bt, ((void **)&local_bt));
+ if (res != IMG_SUCCESS)
+ return NULL;
+
+ local_bt->bt_type = RA_BOUNDARY_TAG_TYPE_SPAN;
+ local_bt->base = base;
+ local_bt->size = 0;
+ local_bt->nxt_seg = NULL;
+ local_bt->prv_seg = NULL;
+ local_bt->nxt_free = NULL;
+ local_bt->prv_free = NULL;
+ local_bt->ref = NULL;
+
+ return local_bt;
+}
+
+/*
+ * @Function ra_build_bt
+ * @Description
+ * Construct a boundary tag for a free segment.
+ * @Input ui64Base : The base of the resource segment.
+ * @Input ui64Size : The extent of the resource segment.
+ * @Output None
+ * @Return btag * : New boundary tag
+ */
+static struct btag *ra_build_bt(unsigned long long base, unsigned long long size)
+{
+ struct btag *local_bt = NULL;
+ int res = IMG_ERROR_FATAL;
+
+ res = pool_alloc(global_pool_bt, ((void **)&local_bt));
+
+ if (res != IMG_SUCCESS)
+ return local_bt;
+
+ local_bt->bt_type = RA_BOUNDARY_TAG_TYPE_FREE;
+ local_bt->base = base;
+ local_bt->size = size;
+ local_bt->nxt_seg = NULL;
+ local_bt->prv_seg = NULL;
+ local_bt->nxt_free = NULL;
+ local_bt->prv_free = NULL;
+ local_bt->ref = NULL;
+
+ return local_bt;
+}
+
+/*
+ * @Function ra_insert_resource
+ * @Description
+ * Add a free resource segment to an arena.
+ * @Input base : The base of the resource segment.
+ * @Input size : The size of the resource segment.
+ * @Output None
+ * @Return IMG_SUCCESS or an error code.
+ */
+static int ra_insert_resource(struct arena *arena_arg,
+ unsigned long long base,
+ unsigned long long size)
+{
+ struct btag *local_bt = NULL;
+
+ local_bt = ra_build_bt(base, size);
+ if (!local_bt)
+ return IMG_ERROR_UNEXPECTED_STATE;
+
+ ra_segment_list_insert(arena_arg, local_bt);
+ ra_free_list_insert(arena_arg, local_bt);
+ arena_arg->max_idx = ra_log2(size);
+ if (1ULL << arena_arg->max_idx < size)
+ arena_arg->max_idx++;
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function ra_insert_resource_span
+ * @Description
+ * Add a free resource span to an arena, complete with span markers.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input base : The base of the resource segment.
+ * @Input size : The size of the resource segment.
+ * @Output None
+ * @Return btag * : The boundary tag representing
+ * the free resource segment.
+ */
+static struct btag *ra_insert_resource_span(struct arena *arena_arg,
+ unsigned long long base,
+ unsigned long long size)
+{
+ struct btag *local_bt = NULL;
+ struct btag *local_bt_span_start = NULL;
+ struct btag *local_bt_span_end = NULL;
+
+ local_bt_span_start = ra_build_span_marker(base);
+ if (!local_bt_span_start)
+ return NULL;
+
+ local_bt_span_end = ra_build_span_marker(base + size);
+ if (!local_bt_span_end) {
+ pool_free(global_pool_bt, local_bt_span_start);
+ return NULL;
+ }
+
+ local_bt = ra_build_bt(base, size);
+ if (!local_bt) {
+ pool_free(global_pool_bt, local_bt_span_end);
+ pool_free(global_pool_bt, local_bt_span_start);
+ return NULL;
+ }
+
+ ra_segment_list_insert(arena_arg, local_bt_span_start);
+ ra_segment_list_insert_after(arena_arg,
+ local_bt_span_start,
+ local_bt);
+ ra_free_list_insert(arena_arg, local_bt);
+ ra_segment_list_insert_after(arena_arg,
+ local_bt,
+ local_bt_span_end);
+
+ return local_bt;
+}
+
+/*
+ * @Function ra_free_bt
+ * @Description
+ * Free a boundary tag taking care of the segment list and the
+ * boundary tag free table.
+ * @Input arena_arg : Pointer to the input arena.
+ * @Input bt_arg : The boundary tag to free.
+ * @Output None
+ * @Return None
+ */
+static void ra_free_bt(struct arena *arena_arg,
+ struct btag *bt_arg)
+{
+ struct btag *bt_neibr;
+
+ /* try and coalesce with left bt_neibr */
+ bt_neibr = bt_arg->prv_seg;
+ if (bt_neibr &&
+ bt_neibr->bt_type == RA_BOUNDARY_TAG_TYPE_FREE &&
+ bt_neibr->base + bt_neibr->size == bt_arg->base) {
+ ra_free_list_remove(arena_arg, bt_neibr);
+ ra_segment_list_remove(arena_arg, bt_neibr);
+ bt_arg->base = bt_neibr->base;
+ bt_arg->size += bt_neibr->size;
+ pool_free(global_pool_bt, bt_neibr);
+ }
+
+ /* try to coalesce with right psBTNeighbour */
+ bt_neibr = bt_arg->nxt_seg;
+ if (bt_neibr &&
+ bt_neibr->bt_type == RA_BOUNDARY_TAG_TYPE_FREE &&
+ bt_arg->base + bt_arg->size == bt_neibr->base) {
+ ra_free_list_remove(arena_arg, bt_neibr);
+ ra_segment_list_remove(arena_arg, bt_neibr);
+ bt_arg->size += bt_neibr->size;
+ pool_free(global_pool_bt, bt_neibr);
+ }
+
+ if (bt_arg->nxt_seg &&
+ bt_arg->nxt_seg->bt_type == RA_BOUNDARY_TAG_TYPE_SPAN &&
+ bt_arg->prv_seg && bt_arg->prv_seg->bt_type ==
+ RA_BOUNDARY_TAG_TYPE_SPAN) {
+ struct btag *ps_bt_nxt = bt_arg->nxt_seg;
+ struct btag *ps_bt_prev = bt_arg->prv_seg;
+
+ ra_segment_list_remove(arena_arg, ps_bt_nxt);
+ ra_segment_list_remove(arena_arg, ps_bt_prev);
+ ra_segment_list_remove(arena_arg, bt_arg);
+ arena_arg->import_free_fxn(arena_arg->import_hdnl,
+ bt_arg->base,
+ bt_arg->ref);
+ pool_free(global_pool_bt, ps_bt_nxt);
+ pool_free(global_pool_bt, ps_bt_prev);
+ pool_free(global_pool_bt, bt_arg);
+ } else {
+ ra_free_list_insert(arena_arg, bt_arg);
+ }
+}
+
+static int ra_check_btag(struct arena *arena_arg,
+ unsigned long long size_arg,
+ void **ref,
+ struct btag *bt_arg,
+ unsigned long long align_arg,
+ unsigned long long *base_arg,
+ unsigned int align_log2)
+{
+ unsigned long long local_align_base;
+ int res = IMG_ERROR_FATAL;
+
+ while (bt_arg) {
+ if (align_arg > 1ULL)
+ local_align_base = ((bt_arg->base + align_arg - 1)
+ >> align_log2) << align_log2;
+ else
+ local_align_base = bt_arg->base;
+
+ if ((bt_arg->base + bt_arg->size) >=
+ (local_align_base + size_arg)) {
+ ra_free_list_remove(arena_arg, bt_arg);
+
+ /*
+ * with align_arg we might need to discard the front of
+ * this segment
+ */
+ if (local_align_base > bt_arg->base) {
+ struct btag *btneighbor;
+
+ btneighbor = ra_segment_split(arena_arg,
+ bt_arg,
+ (local_align_base -
+ bt_arg->base));
+ /*
+ * Partition the buffer, create a new boundary
+ * tag
+ */
+ if (!btneighbor)
+ return IMG_ERROR_UNEXPECTED_STATE;
+
+ ra_free_list_insert(arena_arg, bt_arg);
+ bt_arg = btneighbor;
+ }
+
+ /*
+ * The segment might be too big, if so, discard the back
+ * of the segment
+ */
+ if (bt_arg->size > size_arg) {
+ struct btag *btneighbor;
+
+ btneighbor = ra_segment_split(arena_arg,
+ bt_arg,
+ size_arg);
+ /*
+ * Partition the buffer, create a new boundary
+ * tag
+ */
+ if (!btneighbor)
+ return IMG_ERROR_UNEXPECTED_STATE;
+
+ ra_free_list_insert(arena_arg, btneighbor);
+ }
+
+ bt_arg->bt_type = RA_BOUNDARY_TAG_TYPE_LIVE;
+
+ res = vid_hash_insert(arena_arg->hash_tbl,
+ bt_arg->base,
+ (unsigned long)bt_arg);
+ if (res != IMG_SUCCESS) {
+ ra_free_bt(arena_arg, bt_arg);
+ *base_arg = 0;
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ if (ref)
+ *ref = bt_arg->ref;
+
+ *base_arg = bt_arg->base;
+ return IMG_SUCCESS;
+ }
+ bt_arg = bt_arg->nxt_free;
+ }
+
+ return res;
+}
+
+/*
+ * @Function ra_attempt_alloc_aligned
+ * @Description Attempt to allocate from an arena
+ * @Input arena_arg: Pointer to the input arena
+ * @Input size_arg: The requested allocation size
+ * @Input ref: The user references associated with the allocated
+ * segment
+ * @Input align_arg: Required alignment
+ * @Output base_arg: Allocated resource size
+ * @Return IMG_SUCCESS or an error code
+ */
+static int ra_attempt_alloc_aligned(struct arena *arena_arg,
+ unsigned long long size_arg,
+ void **ref,
+ unsigned long long align_arg,
+ unsigned long long *base_arg)
+{
+ unsigned int index;
+ unsigned int align_log2;
+ int res = IMG_ERROR_FATAL;
+
+ if (!arena_arg || !base_arg)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ /*
+ * Take the log of the alignment to get number of bits to shift
+ * left/right for multiply/divide. Assumption made here is that
+ * alignment has to be a power of 2 value. Aserting otherwise.
+ */
+ align_log2 = ra_log2(align_arg);
+
+ /*
+ * Search for a near fit free boundary tag, start looking at the
+ * log2 free table for our required size and work on up the table.
+ */
+ index = ra_log2(size_arg);
+
+ /*
+ * If the Size required is exactly 2**n then use the n bucket, because
+ * we know that every free block in that bucket is larger than 2**n,
+ * otherwise start at then next bucket up.
+ */
+ if (size_arg > (1ull << index))
+ index++;
+
+ while ((index < FREE_TABLE_LIMIT) && !arena_arg->head_free[index])
+ index++;
+
+ if (index >= FREE_TABLE_LIMIT) {
+ pr_err("requested allocation size doesn't fit in the arena. Increase MMU HEAP Size\n");
+ return IMG_ERROR_OUT_OF_MEMORY;
+ }
+
+ while (index < FREE_TABLE_LIMIT) {
+ if (arena_arg->head_free[index]) {
+ /* we have a cached free boundary tag */
+ struct btag *local_bt =
+ arena_arg->head_free[index];
+
+ res = ra_check_btag(arena_arg,
+ size_arg,
+ ref,
+ local_bt,
+ align_arg,
+ base_arg,
+ align_log2);
+ if (res != IMG_SUCCESS)
+ return res;
+ }
+ index++;
+ }
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function vid_ra_init
+ * @Description Initializes the RA module. Must be called before any other
+ * ra API function
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_initialise(void)
+{
+ int res = IMG_ERROR_FATAL;
+
+ if (!global_init) {
+ res = pool_create("img-arena",
+ sizeof(struct arena),
+ &global_pool_arena);
+ if (res != IMG_SUCCESS)
+ return IMG_ERROR_UNEXPECTED_STATE;
+
+ res = pool_create("img-bt",
+ sizeof(struct btag),
+ &global_pool_bt);
+ if (res != IMG_SUCCESS) {
+ res = pool_delete(global_pool_arena);
+ global_pool_arena = NULL;
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ global_init = 1;
+ res = IMG_SUCCESS;
+ }
+
+ return res;
+}
+
+/*
+ * @Function vid_ra_deinit
+ * @Description Deinitializes the RA module
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_deinit(void)
+{
+ int res = IMG_ERROR_FATAL;
+
+ if (global_init) {
+ if (global_pool_arena) {
+ res = pool_delete(global_pool_arena);
+ global_pool_arena = NULL;
+ }
+ if (global_pool_bt) {
+ res = pool_delete(global_pool_bt);
+ global_pool_bt = NULL;
+ }
+ global_init = 0;
+ res = IMG_SUCCESS;
+ }
+ return res;
+}
+
+/*
+ * @Function vid_ra_create
+ * @Description Used to create a resource arena.
+ * @Input name: The name of the arena for diagnostic purposes
+ * @Input base_arg: The base of an initial resource span or 0
+ * @Input size_arg: The size of an initial resource span or 0
+ * @Input quantum: The arena allocation quantum
+ * @Input (*import_alloc_fxn): A resource allocation callback or NULL
+ * @Input (*import_free_fxn): A resource de-allocation callback or NULL
+ * @Input import_hdnl: Handle passed to alloc and free or NULL
+ * @Output arena_hndl: The handle for the arene being created, or NULL
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_create(const unsigned char * const name,
+ unsigned long long base_arg,
+ unsigned long long size_arg,
+ unsigned long quantum,
+ int (*import_alloc_fxn)(void * const import_hdnl,
+ unsigned long long req_sz,
+ unsigned long long * const actl_sz,
+ void ** const ref,
+ unsigned int alloc_flags,
+ unsigned long long * const base_arg),
+ int (*import_free_fxn)(void * const import_hdnl,
+ unsigned long long import_base,
+ void * const import_ref),
+ void *import_hdnl,
+ void **arena_hndl)
+{
+ struct arena *local_arena = NULL;
+ unsigned int idx = 0;
+ int res = IMG_ERROR_FATAL;
+
+ if (!arena_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ *(arena_hndl) = NULL;
+
+ if (global_init) {
+ res = pool_alloc(global_pool_arena, ((void **)&local_arena));
+ if (!local_arena || res != IMG_SUCCESS)
+ return IMG_ERROR_UNEXPECTED_STATE;
+
+ local_arena->name = NULL;
+ if (name)
+ local_arena->name = kstrdup((const signed char *)name,
+ GFP_KERNEL);
+ if (import_alloc_fxn)
+ local_arena->import_alloc_fxn = import_alloc_fxn;
+ else
+ local_arena->import_alloc_fxn = ra_request_alloc_fail;
+
+ local_arena->import_free_fxn = import_free_fxn;
+ local_arena->import_hdnl = import_hdnl;
+
+ for (idx = 0; idx < FREE_TABLE_LIMIT; idx++)
+ local_arena->head_free[idx] = NULL;
+
+ local_arena->head_seg = NULL;
+ local_arena->tail_seg = NULL;
+ local_arena->quantum = quantum;
+
+ res = vid_hash_create(MINIMUM_HASH_SIZE,
+ &local_arena->hash_tbl);
+
+ if (!local_arena->hash_tbl) {
+ vid_hash_delete(local_arena->hash_tbl);
+ kfree(local_arena->name);
+ local_arena->name = NULL;
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ //if (size_arg > (unsigned long long)0) {
+ if (size_arg > 0ULL) {
+ size_arg = (size_arg + quantum - 1) / quantum * quantum;
+
+ res = ra_insert_resource(local_arena,
+ base_arg,
+ size_arg);
+ if (res != IMG_SUCCESS) {
+ vid_hash_delete(local_arena->hash_tbl);
+ pool_free(global_pool_arena, local_arena);
+ kfree(local_arena->name);
+ local_arena->name = NULL;
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ }
+ *(arena_hndl) = local_arena;
+ res = IMG_SUCCESS;
+ }
+
+ return res;
+}
+
+/*
+ * @Function vid_ra_delete
+ * @Description Used to delete a resource arena. All resources allocated from
+ * the arena must be freed before deleting the arena
+ * @Input arena_hndl: The handle to the arena to delete
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_delete(void * const arena_hndl)
+{
+ int res = IMG_ERROR_FATAL;
+ struct arena *local_arena = NULL;
+ unsigned int idx;
+
+ if (!arena_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (global_init) {
+ local_arena = (struct arena *)arena_hndl;
+ kfree(local_arena->name);
+ local_arena->name = NULL;
+ for (idx = 0; idx < FREE_TABLE_LIMIT; idx++)
+ local_arena->head_free[idx] = NULL;
+
+ while (local_arena->head_seg) {
+ struct btag *local_bt = local_arena->head_seg;
+
+ ra_segment_list_remove(local_arena, local_bt);
+ }
+ res = vid_hash_delete(local_arena->hash_tbl);
+ if (res != IMG_SUCCESS)
+ return IMG_ERROR_UNEXPECTED_STATE;
+
+ res = pool_free(global_pool_arena, local_arena);
+ if (res != IMG_SUCCESS)
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+
+ return res;
+}
+
+/*
+ * @Function vid_ra_add
+ * @Description Used to add a resource span to an arena. The span must not
+ * overlap with any span previously added to the arena
+ * @Input base_arg: The base_arg of the span
+ * @Input size_arg: The size of the span
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_add(void * const arena_hndl, unsigned long long base_arg, unsigned long long size_arg)
+{
+ int res = IMG_ERROR_FATAL;
+ struct arena *local_arena = NULL;
+
+ if (!arena_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (global_init) {
+ local_arena = (struct arena *)arena_hndl;
+ size_arg = (size_arg + local_arena->quantum - 1) /
+ local_arena->quantum * local_arena->quantum;
+
+ res = ra_insert_resource(local_arena, base_arg, size_arg);
+ if (res != IMG_SUCCESS)
+ return IMG_ERROR_INVALID_PARAMETERS;
+ }
+
+ return res;
+}
+
+/*
+ * @Function vid_ra_alloc
+ * @Description Used to allocate resource from an arena
+ * @Input arena_hndl: The handle to the arena to create the resource
+ * @Input request_size: The requested size of resource segment
+ * @Input actl_size: The actualSize of resource segment
+ * @Input ref: The user reference associated with allocated resource
+ * span
+ * @Input alloc_flags: AllocationFlags influencing allocation policy
+ * @Input align_arg: The alignment constraint required for the allocated
+ * segment
+ * @Output base_args: The base of the allocated resource
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_alloc(void * const arena_hndl,
+ unsigned long long request_size,
+ unsigned long long * const actl_sz,
+ void ** const ref,
+ unsigned int alloc_flags,
+ unsigned long long alignarg,
+ unsigned long long * const basearg)
+{
+ int res = IMG_ERROR_FATAL;
+ struct arena *arn_ctx = NULL;
+ unsigned long long loc_size = request_size;
+
+ if (!arena_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (global_init) {
+ arn_ctx = (struct arena *)arena_hndl;
+ loc_size = ((loc_size + arn_ctx->quantum - 1) /
+ arn_ctx->quantum) * arn_ctx->quantum;
+
+ if (actl_sz)
+ *actl_sz = loc_size;
+
+ /*
+ * If allocation failed then we might have an import source
+ * which can provide more resource, else we will have to fail
+ * the allocation to the caller.
+ */
+ if (alloc_flags == RA_SEQUENTIAL_ALLOCATION)
+ res = ra_attempt_alloc_aligned(arn_ctx,
+ loc_size,
+ ref,
+ alignarg,
+ basearg);
+
+ if (res != IMG_SUCCESS) {
+ void *import_ref = NULL;
+ unsigned long long import_base = 0ULL;
+ unsigned long long locimprt_reqsz = loc_size;
+ unsigned long long locimprt_actsz = 0ULL;
+
+ res = arn_ctx->import_alloc_fxn(arn_ctx->import_hdnl,
+ locimprt_reqsz,
+ &locimprt_actsz,
+ &import_ref,
+ alloc_flags,
+ &import_base);
+
+ if (res == IMG_SUCCESS) {
+ struct btag *local_bt =
+ ra_insert_resource_span(arn_ctx,
+ import_base,
+ locimprt_actsz);
+
+ /*
+ * Successfully import more resource, create a
+ * span to represent it and retry the allocation
+ * attempt
+ */
+ if (!local_bt) {
+ /*
+ * Insufficient resources to insert the
+ * newly acquired span, so free it back
+ */
+ arn_ctx->import_free_fxn(arn_ctx->import_hdnl,
+ import_base,
+ import_ref);
+ return IMG_ERROR_UNEXPECTED_STATE;
+ }
+ local_bt->ref = import_ref;
+ if (alloc_flags == RA_SEQUENTIAL_ALLOCATION) {
+ res = ra_attempt_alloc_aligned(arn_ctx,
+ loc_size,
+ ref,
+ alignarg,
+ basearg);
+ }
+ }
+ }
+ }
+
+ return res;
+}
+
+/*
+ * @Function vid_ra_free
+ * @Description Used to free a resource segment
+ * @Input arena_hndl: The arena the segment was originally allocated from
+ * @Input base_arg: The base of the span
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_free(void * const arena_hndl, unsigned long long base_arg)
+{
+ int res = IMG_ERROR_FATAL;
+ struct arena *local_arena = NULL;
+ struct btag *local_bt = NULL;
+ unsigned long uip_res;
+
+ if (!arena_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (global_init) {
+ local_arena = (struct arena *)arena_hndl;
+
+ res = vid_hash_remove(local_arena->hash_tbl,
+ base_arg,
+ &uip_res);
+ if (res != IMG_SUCCESS)
+ return res;
+ local_bt = (struct btag *)uip_res;
+
+ ra_free_bt(local_arena, local_bt);
+ }
+
+ return res;
+}
diff --git a/drivers/staging/media/vxd/common/ra.h b/drivers/staging/media/vxd/common/ra.h
new file mode 100644
index 000000000000..a4d529d635d7
--- /dev/null
+++ b/drivers/staging/media/vxd/common/ra.h
@@ -0,0 +1,200 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Implements generic resource allocation.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+#ifndef _RA_H_
+#define _RA_H_
+
+#define MINIMUM_HASH_SIZE (64)
+#define FREE_TABLE_LIMIT (64)
+
+/* Defines whether sequential or random allocation is used */
+enum {
+ RA_SEQUENTIAL_ALLOCATION = 0,
+ RA_RANDOM_ALLOCATION,
+ RA_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Defines boundary tag type */
+enum eboundary_tag_type {
+ RA_BOUNDARY_TAG_TYPE_SPAN = 0,
+ RA_BOUNDARY_TAG_TYPE_FREE,
+ RA_BOUNDARY_TAG_TYPE_LIVE,
+ RA_BOUNDARY_TAG_TYPE_MAX,
+ RA_BOUNDARY_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/*
+ * @Description
+ * Boundary tags, used to describe a resource segment
+ *
+ * @enum0: span markers
+ * @enum1: free resource segment
+ * @enum2: allocated resource segment
+ * @enum3: max
+ * @base,size: The base resource of this segment and extent of this segment
+ * @nxt_seg, prv_seg: doubly linked ordered list of all segments
+ * within the arena
+ * @nxt_free, prv_free: doubly linked un-ordered list of free segments
+ * @reference : a user reference associated with this span, user
+ * references are currently only provided in
+ * the callback mechanism
+ */
+struct btag {
+ unsigned int bt_type;
+ unsigned long long base;
+ unsigned long long size;
+ struct btag *nxt_seg;
+ struct btag *prv_seg;
+ struct btag *nxt_free;
+ struct btag *prv_free;
+ void *ref;
+};
+
+/*
+ * @Description
+ * resource allocation arena
+ *
+ * @name: arena for diagnostics output
+ * @quantum: allocations within this arena are quantum sized
+ * @max_idx: index of the last position in the psBTHeadFree table,
+ * with available free space
+ * @import_alloc_fxn: import interface, if provided
+ * @import_free_fxn: import interface, if provided
+ * @import_hdnl: import interface, if provided
+ * @head_free: head of list of free boundary tags for indexed by Log2
+ * of the boundary tag size. Power-of-two table of free lists
+ * @head_seg, tail_seg : resource ordered segment list
+ * @ps_hash : segment address to boundary tag hash table
+ */
+struct arena {
+ unsigned char *name;
+ unsigned long quantum;
+ unsigned int max_idx;
+ int (*import_alloc_fxn)(void *import_hdnl,
+ unsigned long long requested_size,
+ unsigned long long *actual_size,
+ void **ref,
+ unsigned int alloc_flags,
+ unsigned long long *base_addr);
+ int (*import_free_fxn)(void *import_hdnl,
+ unsigned long long base,
+ void *ref);
+ void *import_hdnl;
+ struct btag *head_free[FREE_TABLE_LIMIT];
+ struct btag *head_seg;
+ struct btag *tail_seg;
+ struct hash *hash_tbl;
+};
+
+/*
+ * @Function vid_ra_init
+ * @Description Initializes the RA module. Must be called before any other
+ * ra API function
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_initialise(void);
+
+/*
+ * @Function vid_ra_deinit
+ * @Description Deinitializes the RA module
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_deinit(void);
+
+/*
+ * @Function vid_ra_create
+ * @Description Used to create a resource arena.
+ * @Input name: The name of the arena for diagnostic purposes
+ * @Input base_arg: The base of an initial resource span or 0
+ * @Input size_arg: The size of an initial resource span or 0
+ * @Input quantum: The arena allocation quantum
+ * @Input (*import_alloc_fxn): A resource allocation callback or NULL
+ * @Input (*import_free_fxn): A resource de-allocation callback or NULL
+ * @Input import_hdnl: Handle passed to alloc and free or NULL
+ * @Output arena_hndl: The handle for the arene being created, or NULL
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_create(const unsigned char * const name,
+ unsigned long long base_arg,
+ unsigned long long size_arg,
+ unsigned long quantum,
+ int (*import_alloc_fxn)(void * const import_hdnl,
+ unsigned long long req_sz,
+ unsigned long long * const actl_sz,
+ void ** const ref,
+ unsigned int alloc_flags,
+ unsigned long long * const base_arg),
+ int (*import_free_fxn)(void * const import_hdnl,
+ unsigned long long import_base,
+ void * const import_ref),
+ void *import_hdnl,
+ void **arena_hndl);
+
+/*
+ * @Function vid_ra_delete
+ * @Description Used to delete a resource arena. All resources allocated from
+ * the arena must be freed before deleting the arena
+ * @Input arena_hndl: The handle to the arena to delete
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_delete(void * const arena_hndl);
+
+/*
+ * @Function vid_ra_add
+ * @Description Used to add a resource span to an arena. The span must not
+ * overlap with any span previously added to the arena
+ * @Input base_arg: The base_arg of the span
+ * @Input size_arg: The size of the span
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_add(void * const arena_hndl, unsigned long long base_arg, unsigned long long size_arg);
+
+/*
+ * @Function vid_ra_alloc
+ * @Description Used to allocate resource from an arena
+ * @Input arena_hndl: The handle to the arena to create the resource
+ * @Input request_size: The requested size of resource segment
+ * @Input actl_size: The actualSize of resource segment
+ * @Input ref: The user reference associated with allocated resource
+ * span
+ * @Input alloc_flags: AllocationFlags influencing allocation policy
+ * @Input align_arg: The alignment constraint required for the allocated
+ * segment
+ * @Output base_args: The base of the allocated resource
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_alloc(void * const arena_hndl,
+ unsigned long long request_size,
+ unsigned long long * const actl_sz,
+ void ** const ref,
+ unsigned int alloc_flags,
+ unsigned long long align_arg,
+ unsigned long long * const base_arg);
+
+/*
+ * @Function vid_ra_free
+ * @Description Used to free a resource segment
+ * @Input arena_hndl: The arena the segment was originally allocated from
+ * @Input base_arg: The base of the span
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int vid_ra_free(void * const arena_hndl, unsigned long long base_arg);
+
+#endif
diff --git a/drivers/staging/media/vxd/common/talmmu_api.c b/drivers/staging/media/vxd/common/talmmu_api.c
new file mode 100644
index 000000000000..04ddcc33505c
--- /dev/null
+++ b/drivers/staging/media/vxd/common/talmmu_api.c
@@ -0,0 +1,753 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * TAL MMU Extensions.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+#include <linux/slab.h>
+#include <linux/printk.h>
+#include <linux/mutex.h>
+#include <linux/dma-mapping.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+
+#include "img_errors.h"
+#include "lst.h"
+#include "talmmu_api.h"
+
+static int global_init;
+static struct lst_t gl_dmtmpl_lst = {0};
+static struct mutex *global_lock;
+
+static int talmmu_devmem_free(void *mem_hndl)
+{
+ struct talmmu_memory *mem = mem_hndl;
+ struct talmmu_devmem_heap *mem_heap;
+
+ if (!mem_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ mem_heap = mem->devmem_heap;
+
+ if (!mem->ext_dev_virtaddr)
+ addr_cx_free(&mem_heap->ctx, "", mem->dev_virtoffset);
+
+ mutex_lock_nested(global_lock, SUBCLASS_TALMMU);
+
+ lst_remove(&mem_heap->memory_list, mem);
+
+ mutex_unlock(global_lock);
+
+ kfree(mem);
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * talmmu_devmem_heap_empty - talmmu_devmem_heap_empty
+ * @devmem_heap_hndl: device memory heap handle
+ *
+ * This function is used for emptying the device memory heap list
+ */
+int talmmu_devmem_heap_empty(void *devmem_heap_hndl)
+{
+ struct talmmu_devmem_heap *devmem_heap = devmem_heap_hndl;
+
+ if (!devmem_heap)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ while (!lst_empty(&devmem_heap->memory_list))
+ talmmu_devmem_free(lst_first(&devmem_heap->memory_list));
+
+ addr_cx_deinitialise(&devmem_heap->ctx);
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_devmem_heap_destroy
+ *
+ * @Description This function is used for freeing the device memory heap
+ *
+ * @Input
+ *
+ * @Output
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+static void talmmu_devmem_heap_destroy(void *devmem_heap_hndl)
+{
+ struct talmmu_devmem_heap *devmem_heap = devmem_heap_hndl;
+
+ talmmu_devmem_heap_empty(devmem_heap_hndl);
+ kfree(devmem_heap);
+}
+
+/*
+ * @Function talmmu_init
+ *
+ * @Description This function is used to initialize the TALMMU component.
+ *
+ * @Input None.
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_init(void)
+{
+ if (!global_init) {
+ /* If no mutex associated with this resource */
+ if (!global_lock) {
+ /* Create one */
+ global_lock = kzalloc(sizeof(*global_lock), GFP_KERNEL);
+ if (!global_lock)
+ return IMG_ERROR_OUT_OF_MEMORY;
+
+ mutex_init(global_lock);
+ }
+
+ lst_init(&gl_dmtmpl_lst);
+ global_init = 1;
+ }
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_deinit
+ *
+ * @Description This function is used to de-initialize the TALMMU component.
+ *
+ * @Input None.
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_deinit(void)
+{
+ struct talmmu_dm_tmpl *t;
+
+ if (global_init) {
+ while (!lst_empty(&gl_dmtmpl_lst)) {
+ t = (struct talmmu_dm_tmpl *)lst_first(&gl_dmtmpl_lst);
+ talmmu_devmem_template_destroy((void *)t);
+ }
+ mutex_destroy(global_lock);
+ kfree(global_lock);
+ global_lock = NULL;
+ global_init = 0;
+ }
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_devmem_template_create
+ *
+ * @Description This function is used to create a device memory template
+ *
+ * @Input devmem_info: A pointer to a talmmu_devmem_info structure.
+ *
+ * @Output devmem_template_hndl: A pointer used to return the template
+ * handle
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_devmem_template_create(struct talmmu_devmem_info *devmem_info,
+ void **devmem_template_hndl)
+{
+ struct talmmu_dm_tmpl *devmem_template;
+ struct talmmu_dm_tmpl *tmp_devmem_template;
+
+ if (!devmem_info)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ devmem_template = kzalloc(sizeof(*devmem_template), GFP_KERNEL);
+ if (!devmem_template)
+ return IMG_ERROR_OUT_OF_MEMORY;
+
+ devmem_template->devmem_info = *devmem_info;
+
+ lst_init(&devmem_template->devmem_ctx_list);
+
+ mutex_lock_nested(global_lock, SUBCLASS_TALMMU);
+
+ tmp_devmem_template = lst_first(&gl_dmtmpl_lst);
+ while (tmp_devmem_template)
+ tmp_devmem_template = lst_next(tmp_devmem_template);
+
+ devmem_template->page_num_shift = 12;
+ devmem_template->byte_in_pagemask = 0xFFF;
+ devmem_template->heap_alignment = 0x400000;
+ devmem_template->pagetable_entries_perpage =
+ (devmem_template->devmem_info.page_size / sizeof(unsigned int));
+ devmem_template->pagetable_num_shift = 10;
+ devmem_template->index_in_pagetable_mask = 0x3FF;
+ devmem_template->pagedir_num_shift = 22;
+
+ lst_add(&gl_dmtmpl_lst, devmem_template);
+
+ mutex_unlock(global_lock);
+
+ *devmem_template_hndl = devmem_template;
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_devmem_template_destroy
+ *
+ * @Description This function is used to obtain the template from the list and
+ * destroy
+ *
+ * @Input devmem_tmplt_hndl: Device memory template handle
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_devmem_template_destroy(void *devmem_tmplt_hndl)
+{
+ struct talmmu_dm_tmpl *dm_tmpl = devmem_tmplt_hndl;
+ unsigned int i;
+
+ if (!devmem_tmplt_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ while (!lst_empty(&dm_tmpl->devmem_ctx_list))
+ talmmu_devmem_ctx_destroy(lst_first(&dm_tmpl->devmem_ctx_list));
+
+ for (i = 0; i < dm_tmpl->num_heaps; i++)
+ talmmu_devmem_heap_destroy(dm_tmpl->devmem_heap[i]);
+
+ mutex_lock_nested(global_lock, SUBCLASS_TALMMU);
+
+ lst_remove(&gl_dmtmpl_lst, dm_tmpl);
+
+ mutex_unlock(global_lock);
+
+ kfree(dm_tmpl);
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_create_heap
+ *
+ * @Description This function is used to create a device memory heap
+ *
+ * @Input
+ *
+ * @Output
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+static int talmmu_create_heap(void *devmem_tmplt_hndl,
+ struct talmmu_heap_info *heap_info_arg,
+ unsigned char isfull,
+ struct talmmu_devmem_heap **devmem_heap_arg)
+{
+ struct talmmu_dm_tmpl *devmem_template = devmem_tmplt_hndl;
+ struct talmmu_devmem_heap *devmem_heap;
+
+ /* Allocating memory for device memory heap */
+ devmem_heap = kzalloc(sizeof(*devmem_heap), GFP_KERNEL);
+ if (!devmem_heap)
+ return IMG_ERROR_OUT_OF_MEMORY;
+
+ /*
+ * Update the device memory heap structure members
+ * Update the device memory template
+ */
+ devmem_heap->devmem_template = devmem_template;
+ /* Update the device memory heap information */
+ devmem_heap->heap_info = *heap_info_arg;
+
+ /* Initialize the device memory heap list */
+ lst_init(&devmem_heap->memory_list);
+
+ /* If full structure required */
+ if (isfull) {
+ addr_cx_initialise(&devmem_heap->ctx);
+ devmem_heap->regions.base_addr = 0;
+ devmem_heap->regions.size = devmem_heap->heap_info.size;
+ addr_cx_define_mem_region(&devmem_heap->ctx,
+ &devmem_heap->regions);
+ }
+
+ *devmem_heap_arg = devmem_heap;
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_devmem_heap_add
+ *
+ * @Description This function is for creating and adding the heap to the
+ * device memory template
+ *
+ * @Input devmem_tmplt_hndl: device memory template handle
+ *
+ * @Input heap_info_arg: pointer to the heap info structure
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_devmem_heap_add(void *devmem_tmplt_hndl,
+ struct talmmu_heap_info *heap_info_arg)
+{
+ struct talmmu_dm_tmpl *devmem_template = devmem_tmplt_hndl;
+ struct talmmu_devmem_heap *devmem_heap;
+ unsigned int res;
+
+ if (!devmem_tmplt_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (!heap_info_arg)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ res = talmmu_create_heap(devmem_tmplt_hndl,
+ heap_info_arg,
+ 1,
+ &devmem_heap);
+ if (res != IMG_SUCCESS)
+ return res;
+
+ devmem_template->devmem_heap[devmem_template->num_heaps] = devmem_heap;
+ devmem_template->num_heaps++;
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_devmem_ctx_create
+ *
+ * @Description This function is used to create a device memory context
+ *
+ * @Input devmem_tmplt_hndl: pointer to the device memory template handle
+ *
+ * @Input mmu_ctx_id: MMU context ID used with the TAL
+ *
+ * @Output devmem_ctx_hndl: pointer to the device memory context handle
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_devmem_ctx_create(void *devmem_tmplt_hndl,
+ unsigned int mmu_ctx_id,
+ void **devmem_ctx_hndl)
+{
+ struct talmmu_dm_tmpl *dm_tmpl = devmem_tmplt_hndl;
+ struct talmmu_devmem_ctx *dm_ctx;
+ struct talmmu_devmem_heap *dm_heap;
+ int i;
+ unsigned int res = IMG_SUCCESS;
+
+ if (!devmem_tmplt_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ /* Allocate memory for device memory context */
+ dm_ctx = kzalloc((sizeof(struct talmmu_devmem_ctx)), GFP_KERNEL);
+ if (!dm_ctx)
+ return IMG_ERROR_OUT_OF_MEMORY;
+
+ /*
+ * Update the device memory context structure members
+ * Update the device memory template
+ */
+ dm_ctx->devmem_template = dm_tmpl;
+ /* Update MMU context ID */
+ dm_ctx->mmu_ctx_id = mmu_ctx_id;
+
+ /* Check for PTD Alignment */
+ if (dm_tmpl->devmem_info.ptd_alignment == 0)
+ /*
+ * Make sure alignment is a multiple of page size.
+ * Set up PTD alignment to Page Size
+ */
+ dm_tmpl->devmem_info.ptd_alignment =
+ dm_tmpl->devmem_info.page_size;
+
+ /* Reference or create heaps for this context */
+ for (i = 0; i < dm_tmpl->num_heaps; i++) {
+ dm_heap = dm_tmpl->devmem_heap[i];
+ if (!dm_heap)
+ goto error_heap_create;
+
+ switch (dm_heap->heap_info.heap_type) {
+ case TALMMU_HEAP_PERCONTEXT:
+ res = talmmu_create_heap(dm_tmpl,
+ &dm_heap->heap_info,
+ 1,
+ &dm_ctx->devmem_heap[i]);
+ if (res != IMG_SUCCESS)
+ goto error_heap_create;
+ break;
+
+ default:
+ break;
+ }
+
+ dm_ctx->num_heaps++;
+ }
+
+ mutex_lock_nested(global_lock, SUBCLASS_TALMMU);
+
+ /* Add the device memory context to the list */
+ lst_add(&dm_tmpl->devmem_ctx_list, dm_ctx);
+
+ dm_tmpl->num_ctxs++;
+
+ mutex_unlock(global_lock);
+
+ *devmem_ctx_hndl = dm_ctx;
+
+ return IMG_SUCCESS;
+
+error_heap_create:
+ /* Destroy the device memory heaps which were already created */
+ for (i--; i >= 0; i--) {
+ dm_heap = dm_ctx->devmem_heap[i];
+ if (dm_heap->heap_info.heap_type == TALMMU_HEAP_PERCONTEXT)
+ talmmu_devmem_heap_destroy(dm_heap);
+
+ dm_ctx->num_heaps--;
+ }
+ kfree(dm_ctx);
+ return res;
+}
+
+/*
+ * @Function talmmu_devmem_ctx_destroy
+ *
+ * @Description This function is used to get the device memory context from
+ * the list and destroy
+ *
+ * @Input devmem_ctx_hndl: device memory context handle
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_devmem_ctx_destroy(void *devmem_ctx_hndl)
+{
+ struct talmmu_devmem_ctx *devmem_ctx = devmem_ctx_hndl;
+ struct talmmu_dm_tmpl *devmem_template;
+ struct talmmu_devmem_heap *devmem_heap;
+ unsigned int i;
+
+ if (!devmem_ctx_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ devmem_template = devmem_ctx->devmem_template;
+
+ for (i = 0; i < devmem_ctx->num_heaps; i++) {
+ devmem_heap = devmem_ctx->devmem_heap[i];
+ if (!devmem_heap)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ talmmu_devmem_heap_destroy(devmem_heap);
+ }
+
+ devmem_ctx->pagedir = NULL;
+
+ mutex_lock_nested(global_lock, SUBCLASS_TALMMU);
+
+ lst_remove(&devmem_template->devmem_ctx_list, devmem_ctx);
+
+ devmem_ctx->devmem_template->num_ctxs--;
+
+ mutex_unlock(global_lock);
+
+ kfree(devmem_ctx);
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_get_heap_handle
+ *
+ * @Description This function is used to get the device memory heap handle
+ *
+ * @Input hid: heap id
+ *
+ * @Input devmem_ctx_hndl: device memory context handle
+ *
+ * @Output devmem_heap_hndl: pointer to the device memory heap handle
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_get_heap_handle(unsigned int hid,
+ void *devmem_ctx_hndl,
+ void **devmem_heap_hndl)
+{
+ struct talmmu_devmem_ctx *devmem_ctx = devmem_ctx_hndl;
+ unsigned int i;
+
+ if (!devmem_ctx_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ for (i = 0; i < devmem_ctx->num_heaps; i++) {
+ /*
+ * Checking for requested heap id match and return the device
+ * memory heap handle
+ */
+ if (devmem_ctx->devmem_heap[i]->heap_info.heap_id == hid) {
+ *devmem_heap_hndl = devmem_ctx->devmem_heap[i];
+ return IMG_SUCCESS;
+ }
+ }
+
+ return IMG_ERROR_GENERIC_FAILURE;
+}
+
+/*
+ * @Function talmmu_devmem_heap_options
+ *
+ * @Description This function is used to set additional heap options
+ *
+ * @Input devmem_heap_hndl: Handle for heap
+ *
+ * @Input heap_opt_id: Heap options ID
+ *
+ * @Input heap_options: Heap options
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+void talmmu_devmem_heap_options(void *devmem_heap_hndl,
+ enum talmmu_heap_option_id heap_opt_id,
+ union talmmu_heap_options heap_options)
+{
+ struct talmmu_devmem_heap *dm_heap = devmem_heap_hndl;
+
+ switch (heap_opt_id) {
+ case TALMMU_HEAP_OPT_ADD_GUARD_BAND:
+ dm_heap->guardband = heap_options.guardband_opt.guardband;
+ break;
+ default:
+ break;
+ }
+}
+
+/*
+ * @Function talmmu_devmem_malloc_nonmap
+ *
+ * @Description
+ *
+ * @Input
+ *
+ * @Output
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+static int talmmu_devmem_alloc_nonmap(void *devmem_ctx_hndl,
+ void *devmem_heap_hndl,
+ unsigned int size,
+ unsigned int align,
+ unsigned int dev_virt_ofset,
+ unsigned char ext_dev_vaddr,
+ void **mem_hndl)
+{
+ struct talmmu_devmem_ctx *dm_ctx = devmem_ctx_hndl;
+ struct talmmu_dm_tmpl *dm_tmpl;
+ struct talmmu_devmem_heap *dm_heap = devmem_heap_hndl;
+ struct talmmu_memory *mem;
+ unsigned long long ui64_dev_offset = 0;
+ int res = IMG_SUCCESS;
+
+ if (!dm_ctx)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ if (!devmem_heap_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ dm_tmpl = dm_ctx->devmem_template;
+
+ /* Allocate memory for memory structure */
+ mem = kzalloc((sizeof(struct talmmu_memory)), GFP_KERNEL);
+ if (!mem)
+ return IMG_ERROR_OUT_OF_MEMORY;
+
+ mem->devmem_heap = dm_heap;
+ mem->devmem_ctx = dm_ctx;
+ mem->ext_dev_virtaddr = ext_dev_vaddr;
+
+ /* We always for to be at least page aligned */
+ if (align >= dm_tmpl->devmem_info.page_size)
+ /*
+ * alignment is larger than page size - make sure alignment is
+ * a multiple of page size
+ */
+ mem->alignment = align;
+ else
+ /*
+ * alignment is smaller than page size - make sure page size is
+ * a multiple of alignment. Now round up alignment to one page
+ */
+ mem->alignment = dm_tmpl->devmem_info.page_size;
+
+ /* Round size up to next multiple of physical pages */
+ if ((size % dm_tmpl->devmem_info.page_size) != 0)
+ mem->size = ((size / dm_tmpl->devmem_info.page_size)
+ + 1) * dm_tmpl->devmem_info.page_size;
+ else
+ mem->size = size;
+
+ /* If the device virtual address was externally defined */
+ if (mem->ext_dev_virtaddr) {
+ res = IMG_ERROR_INVALID_PARAMETERS;
+ goto free_mem;
+ }
+
+ res = addr_cx_malloc_align_res(&dm_heap->ctx, "",
+ (mem->size + dm_heap->guardband),
+ mem->alignment,
+ &ui64_dev_offset);
+
+ mem->dev_virtoffset = (unsigned int)ui64_dev_offset;
+ if (res != IMG_SUCCESS)
+ /*
+ * If heap space is unavaliable return NULL, the caller must
+ * handle this condition
+ */
+ goto free_virt;
+
+ mutex_lock_nested(global_lock, SUBCLASS_TALMMU);
+
+ /*
+ * Add memory allocation to the list for this heap...
+ * If the heap is empty...
+ */
+ if (lst_empty(&dm_heap->memory_list))
+ /*
+ * Save flag to indicate whether the device virtual address
+ * is allocated internally or externally...
+ */
+ dm_heap->ext_dev_virtaddr = mem->ext_dev_virtaddr;
+
+ /*
+ * Once we have started allocating in one way ensure that we continue
+ * to do this...
+ */
+ lst_add(&dm_heap->memory_list, mem);
+
+ mutex_unlock(global_lock);
+
+ *mem_hndl = mem;
+
+ return IMG_SUCCESS;
+
+free_virt:
+ addr_cx_free(&dm_heap->ctx, "", mem->dev_virtoffset);
+free_mem:
+ kfree(mem);
+
+ return res;
+}
+
+/*
+ * @Function talmmu_devmem_addr_alloc
+ *
+ * @Description
+ *
+ * @Input
+ *
+ * @Output
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_devmem_addr_alloc(void *devmem_ctx_hndl,
+ void *devmem_heap_hndl,
+ unsigned int size,
+ unsigned int align,
+ void **mem_hndl)
+{
+ unsigned int res;
+ void *mem;
+
+ res = talmmu_devmem_alloc_nonmap(devmem_ctx_hndl,
+ devmem_heap_hndl,
+ size,
+ align,
+ 0,
+ 0,
+ &mem);
+ if (res != IMG_SUCCESS)
+ return res;
+
+ *mem_hndl = mem;
+
+ return IMG_SUCCESS;
+}
+
+/*
+ * @Function talmmu_devmem_addr_free
+ *
+ * @Description This function is used to free device memory allocated using
+ * talmmu_devmem_addr_alloc().
+ *
+ * @Input mem_hndl : Handle for the memory object
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_devmem_addr_free(void *mem_hndl)
+{
+ unsigned int res;
+
+ if (!mem_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ /* free device memory allocated by calling talmmu_devmem_free() */
+ res = talmmu_devmem_free(mem_hndl);
+
+ return res;
+}
+
+/*
+ * @Function talmmu_get_dev_virt_addr
+ *
+ * @Description This function is use to obtain the device (virtual) memory
+ * address which may be required for as a device virtual address
+ * in some of the TAL image functions
+ *
+ * @Input mem_hndl : Handle for the memory object
+ *
+ * @Output dev_virt: A piointer used to return the device virtual address
+ *
+ * @Return IMG_SUCCESS or an error code
+ *
+ */
+int talmmu_get_dev_virt_addr(void *mem_hndl,
+ unsigned int *dev_virt)
+{
+ struct talmmu_memory *mem = mem_hndl;
+ struct talmmu_devmem_heap *devmem_heap;
+
+ if (!mem_hndl)
+ return IMG_ERROR_INVALID_PARAMETERS;
+
+ devmem_heap = mem->devmem_heap;
+
+ /*
+ * Device virtual address is addition of the specific device virtual
+ * offset and the base device virtual address from the heap information
+ */
+ *dev_virt = (devmem_heap->heap_info.basedev_virtaddr +
+ mem->dev_virtoffset);
+
+ return IMG_SUCCESS;
+}
diff --git a/drivers/staging/media/vxd/common/talmmu_api.h b/drivers/staging/media/vxd/common/talmmu_api.h
new file mode 100644
index 000000000000..f37f78394d54
--- /dev/null
+++ b/drivers/staging/media/vxd/common/talmmu_api.h
@@ -0,0 +1,246 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * TAL MMU Extensions.
+ *
+ * Copyright (c) Imagination Technologies Ltd.
+ * Copyright (c) 2021 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Authors:
+ * Lakshmi Sankar <lakshmisankar-t@ti.com>
+ *
+ * Re-written for upstream
+ * Sidraya Jayagond <sidraya.bj@pathpartnertech.com>
+ */
+#include "addr_alloc.h"
+#include "ra.h"
+#include "lst.h"
+
+#ifndef __TALMMU_API_H__
+#define __TALMMU_API_H__
+
+#define TALMMU_MAX_DEVICE_HEAPS (32)
+#define TALMMU_MAX_TEMPLATES (32)
+
+/* MMU type */
+enum talmmu_mmu_type {
+ /* 4kb pages and 32-bit address range */
+ TALMMU_MMUTYPE_4K_PAGES_32BIT_ADDR = 0x1,
+ /* variable size pages and 32-bit address */
+ TALMMU_MMUTYPE_VAR_PAGES_32BIT_ADDR,
+ /* 4kb pages and 36-bit address range */
+ TALMMU_MMUTYPE_4K_PAGES_36BIT_ADDR,
+ /* 4kb pages and 40-bit address range */
+ TALMMU_MMUTYPE_4K_PAGES_40BIT_ADDR,
+ /* variable size pages and 40-bit address range */
+ TALMMU_MMUTYPE_VP_40BIT,
+ TALMMU_MMUTYPE_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Device flags */
+enum talmmu_dev_flags {
+ TALMMU_DEVFLAGS_NONE = 0x0,
+ TALMMU_DEVFLAGS_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Heap type */
+enum talmmu_heap_type {
+ TALMMU_HEAP_SHARED_EXPORTED,
+ TALMMU_HEAP_PERCONTEXT,
+ TALMMU_HEAP_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Heap flags */
+enum talmmu_eheapflags {
+ TALMMU_HEAPFLAGS_NONE = 0x0,
+ TALMMU_HEAPFLAGS_SET_CACHE_CONSISTENCY = 0x00000001,
+ TALMMU_HEAPFLAGS_128BYTE_INTERLEAVE = 0x00000002,
+ TALMMU_HEAPFLAGS_256BYTE_INTERLEAVE = 0x00000004,
+ TALMMU_HEAPFLAGS_FORCE32BITS = 0x7FFFFFFFU
+};
+
+/* Contains the device memory information */
+struct talmmu_devmem_info {
+ /* device id */
+ unsigned int device_id;
+ /* mmu type */
+ enum talmmu_mmu_type mmu_type;
+ /* Device flags - bit flags that can be combined */
+ enum talmmu_dev_flags dev_flags;
+ /* Name of the memory space for page directory allocations */
+ unsigned char *pagedir_memspace_name;
+ /* Name of the memory space for page table allocations */
+ unsigned char *pagetable_memspace_name;
+ /* Page size in bytes */
+ unsigned int page_size;
+ /* PTD alignment, must be multiple of Page size */
+ unsigned int ptd_alignment;
+};
+
+struct talmmu_heap_info {
+ /* heap id */
+ unsigned int heap_id;
+ /* heap type */
+ enum talmmu_heap_type heap_type;
+ /* heap flags - bit flags that can be combined */
+ enum talmmu_eheapflags heap_flags;
+ /* Name of the memory space for memory allocations */
+ unsigned char *memspace_name;
+ /* Base device virtual address */
+ unsigned int basedev_virtaddr;
+ /* size in bytes */
+ unsigned int size;
+};
+
+/* Device memory template information */
+struct talmmu_dm_tmpl {
+ /* list */
+ struct lst_t list;
+ /* Copy of device memory info structure */
+ struct talmmu_devmem_info devmem_info;
+ /* Memory space ID for PTD allocations */
+ void *ptd_memspace_hndl;
+ /* Memory space ID for Page Table allocations */
+ void *ptentry_memspace_hndl;
+ /* number of heaps */
+ unsigned int num_heaps;
+ /* Array of heap pointers */
+ struct talmmu_devmem_heap *devmem_heap[TALMMU_MAX_DEVICE_HEAPS];
+ /* Number of active contexts */
+ unsigned int num_ctxs;
+ /* List of device memory context created from this template */
+ struct lst_t devmem_ctx_list;
+ /* Number of bits to shift right to obtain page number */
+ unsigned int page_num_shift;
+ /* Mask to extract byte-within-page */
+ unsigned int byte_in_pagemask;
+ /* Heap alignment */
+ unsigned int heap_alignment;
+ /* Page table entries/page */
+ unsigned int pagetable_entries_perpage;
+ /* Number of bits to shift right to obtain page table number */
+ unsigned int pagetable_num_shift;
+ /* Mask to extract index-within-page-table */
+ unsigned int index_in_pagetable_mask;
+ /* Number of bits to shift right to obtain page dir number */
+ unsigned int pagedir_num_shift;
+};
+
+/* Device memory heap information */
+struct talmmu_devmem_heap {
+ /* list item */
+ struct lst_t list;
+ /* Copy of the heap info structure */
+ struct talmmu_heap_info heap_info;
+ /* Pointer to the device memory template */
+ struct talmmu_dm_tmpl *devmem_template;
+ /* true if device virtual address offset allocated externally by user */
+ unsigned int ext_dev_virtaddr;
+ /* list of memory allocations */
+ struct lst_t memory_list;
+ /* Memory space ID for memory allocations */
+ void *memspace_hndl;
+ /* Address context structure */
+ struct addr_context ctx;
+ /* Regions structure */
+ struct addr_region regions;
+ /* size of heap guard band */
+ unsigned int guardband;
+};
+
+struct talmmu_devmem_ctx {
+ /* list item */
+ struct lst_t list;
+ /* Pointer to device template */
+ struct talmmu_dm_tmpl *devmem_template;
+ /* No. of heaps */
+ unsigned int num_heaps;
+ /* Array of heap pointers */
+ struct talmmu_devmem_heap *devmem_heap[TALMMU_MAX_DEVICE_HEAPS];
+ /* The MMU context id */
+ unsigned int mmu_ctx_id;
+ /* Pointer to the memory that represents Page directory */
+ unsigned int *pagedir;
+};
+
+struct talmmu_memory {
+ /* list item */
+ struct lst_t list;
+ /* Heap from which memory was allocated */
+ struct talmmu_devmem_heap *devmem_heap;
+ /* Context through which memory was allocated */
+ struct talmmu_devmem_ctx *devmem_ctx;
+ /* size */
+ unsigned int size;
+ /* alignment */
+ unsigned int alignment;
+ /* device virtual offset of allocation */
+ unsigned int dev_virtoffset;
+ /* true if device virtual address offset allocated externally by user */
+ unsigned int ext_dev_virtaddr;
+};
+
+/* This type defines the event types for the TALMMU callbacks */
+enum talmmu_event {
+ /* Function to flush the cache. */
+ TALMMU_EVENT_FLUSH_CACHE,
+ /*! Function to write the page directory address to the device */
+ TALMMU_EVENT_WRITE_PAGE_DIRECTORY_REF,
+ /* Placeholder*/
+ TALMMU_NO_OF_EVENTS
+};
+
+enum talmmu_heap_option_id {
+ /* Add guard band to all mallocs */
+ TALMMU_HEAP_OPT_ADD_GUARD_BAND,
+ TALMMU_HEAP_OPT_SET_MEM_ATTRIB,
+ TALMMU_HEAP_OPT_SET_MEM_POOL,
+
+ /* Placeholder */
+ TALMMU_NO_OF_OPTIONS,
+ TALMMU_NO_OF_FORCE32BITS = 0x7FFFFFFFU
+};
+
+struct talmmu_guardband_options {
+ unsigned int guardband;
+};
+
+union talmmu_heap_options {
+ /* Guardband parameters */
+ struct talmmu_guardband_options guardband_opt;
+};
+
+int talmmu_init(void);
+int talmmu_deinit(void);
+int talmmu_devmem_template_create(struct talmmu_devmem_info *devmem_info,
+ void **devmem_template_hndl);
+int talmmu_devmem_heap_add(void *devmem_tmplt_hndl,
+ struct talmmu_heap_info *heap_info_arg);
+int talmmu_devmem_template_destroy(void *devmem_tmplt_hndl);
+int talmmu_devmem_ctx_create(void *devmem_tmplt_hndl,
+ unsigned int mmu_ctx_id,
+ void **devmem_ctx_hndl);
+int talmmu_devmem_ctx_destroy(void *devmem_ctx_hndl);
+int talmmu_get_heap_handle(unsigned int hid,
+ void *devmem_ctx_hndl,
+ void **devmem_heap_hndl);
+/**
+ * talmmu_devmem_heap_empty - talmmu_devmem_heap_empty
+ * @devmem_heap_hndl: device memory heap handle
+ *
+ * This function is used for emptying the device memory heap list
+ */
+
+int talmmu_devmem_heap_empty(void *devmem_heap_hndl);
+void talmmu_devmem_heap_options(void *devmem_heap_hndl,
+ enum talmmu_heap_option_id heap_opt_id,
+ union talmmu_heap_options heap_options);
+int talmmu_devmem_addr_alloc(void *devmem_ctx_hndl,
+ void *devmem_heap_hndl,
+ unsigned int size,
+ unsigned int align,
+ void **mem_hndl);
+int talmmu_devmem_addr_free(void *mem_hndl);
+int talmmu_get_dev_virt_addr(void *mem_hndl,
+ unsigned int *dev_virt);
+
+#endif /* __TALMMU_API_H__ */
--
2.17.1
--
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next prev parent reply other threads:[~2021-08-18 14:15 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 14:10 [PATCH 00/30] TI Video Decoder driver upstreaming to v5.14-rc6 kernel sidraya.bj
2021-08-18 14:10 ` [PATCH 01/30] dt-bindings: Add binding for img,d5500-vxd for DRA8x sidraya.bj
2021-08-18 14:10 ` [PATCH 02/30] v4l: vxd-dec: Create mmu programming helper library sidraya.bj
2021-08-18 14:37 ` Greg KH
2021-08-18 14:10 ` [PATCH 03/30] v4l: vxd-dec: Create vxd_dec Mem Manager " sidraya.bj
2021-08-24 13:34 ` Dan Carpenter
2021-09-14 3:40 ` Sidraya Jayagond
2021-09-14 4:35 ` Greg KH
2021-09-20 18:07 ` Sidraya Jayagond
2021-08-18 14:10 ` [PATCH 04/30] v4l: vxd-dec: Add vxd " sidraya.bj
2021-08-18 14:10 ` [PATCH 05/30] v4l: vxd-dec: Add IMG VXD Video Decoder mem to mem drive sidraya.bj
2021-08-18 14:10 ` [PATCH 06/30] v4l: vxd-dec: Add hardware control modules sidraya.bj
2021-08-18 14:10 ` [PATCH 07/30] v4l: vxd-dec: Add vxd core module sidraya.bj
2021-08-18 14:10 ` [PATCH 08/30] v4l: vxd-dec: Add translation control modules sidraya.bj
2021-08-18 14:10 ` [PATCH 09/30] v4l: vxd-dec: Add idgen api modules sidraya.bj
2021-08-24 14:00 ` Dan Carpenter
2021-09-14 4:24 ` Sidraya Jayagond
2021-08-18 14:10 ` [PATCH 10/30] v4l: vxd-dec: Add utility modules sidraya.bj
2021-08-18 14:10 ` sidraya.bj [this message]
2021-08-18 14:10 ` [PATCH 12/30] v4l: vxd-dec: Add VDEC MMU wrapper sidraya.bj
2021-08-18 14:10 ` [PATCH 13/30] v4l: vxd-dec: Add Bistream Preparser (BSPP) module sidraya.bj
2021-08-18 14:10 ` [PATCH 14/30] v4l: vxd-dec: Add common headers sidraya.bj
2021-08-18 14:10 ` [PATCH 15/30] v4l: vxd-dec: Add firmware interface headers sidraya.bj
2021-08-18 14:10 ` [PATCH 16/30] v4l: vxd-dec: Add pool api modules sidraya.bj
2021-08-18 14:10 ` [PATCH 17/30] v4l: vxd-dec: This patch implements resource manage component sidraya.bj
2021-08-18 14:10 ` [PATCH 18/30] v4l: vxd-dec: This patch implements pixel processing library sidraya.bj
2021-08-18 14:10 ` [PATCH 19/30] v4l:vxd-dec:vdecdd utility library sidraya.bj
2021-08-18 14:10 ` [PATCH 20/30] v4l:vxd-dec:Decoder resource component sidraya.bj
2021-08-18 14:10 ` [PATCH 21/30] v4l:vxd-dec:Decoder Core Component sidraya.bj
2021-08-18 14:10 ` [PATCH 22/30] v4l:vxd-dec:vdecdd headers added sidraya.bj
2021-08-18 14:10 ` [PATCH 23/30] v4l:vxd-dec:Decoder Component sidraya.bj
2021-08-18 14:10 ` [PATCH 24/30] v4l:vxd-dec: Add resource manager sidraya.bj
2021-08-18 14:38 ` Greg KH
2021-08-18 14:10 ` [PATCH 25/30] v4l: videodev2: Add 10bit definitions for NV12 and NV16 color formats sidraya.bj
2021-08-24 16:14 ` Nicolas Dufresne
2021-08-18 14:10 ` [PATCH 26/30] media: Kconfig: Add Video decoder kconfig and Makefile entries sidraya.bj
2021-08-18 14:10 ` [PATCH 27/30] media: platform: vxd: Kconfig: Add Video decoder Kconfig and Makefile sidraya.bj
2021-08-18 18:24 ` kernel test robot
2021-08-19 5:59 ` kernel test robot
2021-08-18 14:10 ` [PATCH 28/30] IMG DEC V4L2 Interface function implementations sidraya.bj
2021-08-18 19:22 ` kernel test robot
2021-08-18 14:10 ` [PATCH 29/30] arm64: dts: dra82: Add v4l2 vxd_dec device node sidraya.bj
2021-08-18 16:44 ` Nishanth Menon
2021-08-18 14:10 ` [PATCH 30/30] ARM64: ti_sdk_arm64_release_defconfig: Enable d5520 video decoder driver sidraya.bj
2021-08-18 14:25 ` Bajjuri, Praneeth
2021-08-18 16:35 ` Nishanth Menon
2021-08-24 13:06 ` [PATCH 00/30] TI Video Decoder driver upstreaming to v5.14-rc6 kernel Hans Verkuil
2021-08-24 13:36 ` Dan Carpenter
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