This is not used anywhere. So, let's trash it.
Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
---
drivers/staging/media/atomisp/Makefile | 1 -
.../media/atomisp/include/hmm/hmm_vm.h | 65 -----
.../media/atomisp/pci/hmm/hmm_dynamic_pool.c | 233 ------------------
.../staging/media/atomisp/pci/hmm/hmm_vm.c | 212 ----------------
4 files changed, 511 deletions(-)
delete mode 100644 drivers/staging/media/atomisp/include/hmm/hmm_vm.h
delete mode 100644 drivers/staging/media/atomisp/pci/hmm/hmm_dynamic_pool.c
delete mode 100644 drivers/staging/media/atomisp/pci/hmm/hmm_vm.c
diff --git a/drivers/staging/media/atomisp/Makefile
b/drivers/staging/media/atomisp/Makefile
index eedecd49bbf4..c7a55d059425 100644
--- a/drivers/staging/media/atomisp/Makefile
+++ b/drivers/staging/media/atomisp/Makefile
@@ -53,7 +53,6 @@ atomisp-objs += \
pci/hmm/hmm_dynamic_pool.o \
pci/hmm/hmm.o \
pci/hmm/hmm_reserved_pool.o \
- pci/hmm/hmm_vm.o \
pci/hrt/hive_isp_css_mm_hrt.o \
pci/ia_css_device_access.o \
pci/ia_css_memory_access.o \
diff --git a/drivers/staging/media/atomisp/include/hmm/hmm_vm.h
b/drivers/staging/media/atomisp/include/hmm/hmm_vm.h
deleted file mode 100644
index 93ac5e445137..000000000000
--- a/drivers/staging/media/atomisp/include/hmm/hmm_vm.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Support for Medifield PNW Camera Imaging ISP subsystem.
- *
- * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
- *
- * Copyright (c) 2010 Silicon Hive www.siliconhive.com.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- *
- */
-
-#ifndef __HMM_VM_H__
-#define __HMM_VM_H__
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/mutex.h>
-#include <linux/list.h>
-
-struct hmm_vm {
- unsigned int start;
- unsigned int pgnr;
- unsigned int size;
- struct list_head vm_node_list;
- spinlock_t lock;
- struct kmem_cache *cache;
-};
-
-struct hmm_vm_node {
- struct list_head list;
- unsigned int start;
- unsigned int pgnr;
- unsigned int size;
- struct hmm_vm *vm;
-};
-
-#define ISP_VM_START 0x0
-#define ISP_VM_SIZE (0x7FFFFFFF) /* 2G address space */
-#define ISP_PTR_NULL NULL
-
-int hmm_vm_init(struct hmm_vm *vm, unsigned int start,
- unsigned int size);
-
-void hmm_vm_clean(struct hmm_vm *vm);
-
-struct hmm_vm_node *hmm_vm_alloc_node(struct hmm_vm *vm,
- unsigned int pgnr);
-
-void hmm_vm_free_node(struct hmm_vm_node *node);
-
-struct hmm_vm_node *hmm_vm_find_node_start(struct hmm_vm *vm,
- unsigned int addr);
-
-struct hmm_vm_node *hmm_vm_find_node_in_range(struct hmm_vm *vm,
- unsigned int addr);
-
-#endif
diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm_dynamic_pool.c
b/drivers/staging/media/atomisp/pci/hmm/hmm_dynamic_pool.c
deleted file mode 100644
index 1a87af68a924..000000000000
--- a/drivers/staging/media/atomisp/pci/hmm/hmm_dynamic_pool.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * Support for Medifield PNW Camera Imaging ISP subsystem.
- *
- * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
- *
- * Copyright (c) 2010 Silicon Hive www.siliconhive.com.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- *
- */
-/*
- * This file contains functions for dynamic memory pool management
- */
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/mm.h>
-
-#include <asm/set_memory.h>
-
-#include "atomisp_internal.h"
-
-#include "hmm/hmm_pool.h"
-
-/*
- * dynamic memory pool ops.
- */
-static unsigned int get_pages_from_dynamic_pool(void *pool,
- struct hmm_page_object *page_obj,
- unsigned int size, bool cached)
-{
- struct hmm_page *hmm_page;
- unsigned long flags;
- unsigned int i = 0;
- struct hmm_dynamic_pool_info *dypool_info = pool;
-
- if (!dypool_info)
- return 0;
-
- spin_lock_irqsave(&dypool_info->list_lock, flags);
- if (dypool_info->initialized) {
- while (!list_empty(&dypool_info->pages_list)) {
- hmm_page = list_entry(dypool_info->pages_list.next,
- struct hmm_page, list);
-
- list_del(&hmm_page->list);
- dypool_info->pgnr--;
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
-
- page_obj[i].page = hmm_page->page;
- page_obj[i++].type = HMM_PAGE_TYPE_DYNAMIC;
- kmem_cache_free(dypool_info->pgptr_cache, hmm_page);
-
- if (i == size)
- return i;
-
- spin_lock_irqsave(&dypool_info->list_lock, flags);
- }
- }
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
-
- return i;
-}
-
-static void free_pages_to_dynamic_pool(void *pool,
- struct hmm_page_object *page_obj)
-{
- struct hmm_page *hmm_page;
- unsigned long flags;
- int ret;
- struct hmm_dynamic_pool_info *dypool_info = pool;
-
- if (!dypool_info)
- return;
-
- spin_lock_irqsave(&dypool_info->list_lock, flags);
- if (!dypool_info->initialized) {
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
- return;
- }
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
-
- if (page_obj->type == HMM_PAGE_TYPE_RESERVED)
- return;
-
- if (dypool_info->pgnr >= dypool_info->pool_size) {
- /* free page directly back to system */
- ret = set_pages_wb(page_obj->page, 1);
- if (ret)
- dev_err(atomisp_dev,
- "set page to WB err ...ret=%d\n", ret);
- /*
- W/A: set_pages_wb seldom return value = -EFAULT
- indicate that address of page is not in valid
- range(0xffff880000000000~0xffffc7ffffffffff)
- then, _free_pages would panic; Do not know why page
- address be valid, it maybe memory corruption by lowmemory
- */
- if (!ret) {
- __free_pages(page_obj->page, 0);
- hmm_mem_stat.sys_size--;
- }
- return;
- }
- hmm_page = kmem_cache_zalloc(dypool_info->pgptr_cache,
- GFP_KERNEL);
- if (!hmm_page) {
- /* free page directly */
- ret = set_pages_wb(page_obj->page, 1);
- if (ret)
- dev_err(atomisp_dev,
- "set page to WB err ...ret=%d\n", ret);
- if (!ret) {
- __free_pages(page_obj->page, 0);
- hmm_mem_stat.sys_size--;
- }
- return;
- }
-
- hmm_page->page = page_obj->page;
-
- /*
- * add to pages_list of pages_pool
- */
- spin_lock_irqsave(&dypool_info->list_lock, flags);
- list_add_tail(&hmm_page->list, &dypool_info->pages_list);
- dypool_info->pgnr++;
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
- hmm_mem_stat.dyc_size++;
-}
-
-static int hmm_dynamic_pool_init(void **pool, unsigned int pool_size)
-{
- struct hmm_dynamic_pool_info *dypool_info;
-
- if (pool_size == 0)
- return 0;
-
- dypool_info = kmalloc(sizeof(struct hmm_dynamic_pool_info),
- GFP_KERNEL);
- if (unlikely(!dypool_info))
- return -ENOMEM;
-
- dypool_info->pgptr_cache = kmem_cache_create("pgptr_cache",
- sizeof(struct hmm_page), 0,
- SLAB_HWCACHE_ALIGN, NULL);
- if (!dypool_info->pgptr_cache) {
- kfree(dypool_info);
- return -ENOMEM;
- }
-
- INIT_LIST_HEAD(&dypool_info->pages_list);
- spin_lock_init(&dypool_info->list_lock);
- dypool_info->initialized = true;
- dypool_info->pool_size = pool_size;
- dypool_info->pgnr = 0;
-
- *pool = dypool_info;
-
- return 0;
-}
-
-static void hmm_dynamic_pool_exit(void **pool)
-{
- struct hmm_dynamic_pool_info *dypool_info = *pool;
- struct hmm_page *hmm_page;
- unsigned long flags;
- int ret;
-
- if (!dypool_info)
- return;
-
- spin_lock_irqsave(&dypool_info->list_lock, flags);
- if (!dypool_info->initialized) {
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
- return;
- }
- dypool_info->initialized = false;
-
- while (!list_empty(&dypool_info->pages_list)) {
- hmm_page = list_entry(dypool_info->pages_list.next,
- struct hmm_page, list);
-
- list_del(&hmm_page->list);
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
-
- /* can cause thread sleep, so cannot be put into spin_lock */
- ret = set_pages_wb(hmm_page->page, 1);
- if (ret)
- dev_err(atomisp_dev,
- "set page to WB err...ret=%d\n", ret);
- if (!ret) {
- __free_pages(hmm_page->page, 0);
- hmm_mem_stat.dyc_size--;
- hmm_mem_stat.sys_size--;
- }
- kmem_cache_free(dypool_info->pgptr_cache, hmm_page);
- spin_lock_irqsave(&dypool_info->list_lock, flags);
- }
-
- spin_unlock_irqrestore(&dypool_info->list_lock, flags);
-
- kmem_cache_destroy(dypool_info->pgptr_cache);
-
- kfree(dypool_info);
-
- *pool = NULL;
-}
-
-static int hmm_dynamic_pool_inited(void *pool)
-{
- struct hmm_dynamic_pool_info *dypool_info = pool;
-
- if (!dypool_info)
- return 0;
-
- return dypool_info->initialized;
-}
-
-struct hmm_pool_ops dynamic_pops = {
- .pool_init = hmm_dynamic_pool_init,
- .pool_exit = hmm_dynamic_pool_exit,
- .pool_alloc_pages = get_pages_from_dynamic_pool,
- .pool_free_pages = free_pages_to_dynamic_pool,
- .pool_inited = hmm_dynamic_pool_inited,
-};
diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm_vm.c
b/drivers/staging/media/atomisp/pci/hmm/hmm_vm.c
deleted file mode 100644
index 976a2cb51354..000000000000
--- a/drivers/staging/media/atomisp/pci/hmm/hmm_vm.c
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * Support for Medifield PNW Camera Imaging ISP subsystem.
- *
- * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
- *
- * Copyright (c) 2010 Silicon Hive www.siliconhive.com.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- *
- */
-/*
- * This file contains function for ISP virtual address management in ISP driver
- */
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <asm/page.h>
-
-#include "atomisp_internal.h"
-#include "mmu/isp_mmu.h"
-#include "hmm/hmm_vm.h"
-#include "hmm/hmm_common.h"
-
-static unsigned int vm_node_end(unsigned int start, unsigned int pgnr)
-{
- return start + pgnr_to_size(pgnr);
-}
-
-static int addr_in_vm_node(unsigned int addr,
- struct hmm_vm_node *node)
-{
- return (addr >= node->start) && (addr < (node->start + node->size));
-}
-
-int hmm_vm_init(struct hmm_vm *vm, unsigned int start,
- unsigned int size)
-{
- if (!vm)
- return -1;
-
- vm->start = start;
- vm->pgnr = size_to_pgnr_ceil(size);
- vm->size = pgnr_to_size(vm->pgnr);
-
- INIT_LIST_HEAD(&vm->vm_node_list);
- spin_lock_init(&vm->lock);
- vm->cache = kmem_cache_create("atomisp_vm", sizeof(struct hmm_vm_node),
- 0, 0, NULL);
-
- return vm->cache ? 0 : -ENOMEM;
-}
-
-void hmm_vm_clean(struct hmm_vm *vm)
-{
- struct hmm_vm_node *node, *tmp;
- struct list_head new_head;
-
- if (!vm)
- return;
-
- spin_lock(&vm->lock);
- list_replace_init(&vm->vm_node_list, &new_head);
- spin_unlock(&vm->lock);
-
- list_for_each_entry_safe(node, tmp, &new_head, list) {
- list_del(&node->list);
- kmem_cache_free(vm->cache, node);
- }
-
- kmem_cache_destroy(vm->cache);
-}
-
-static struct hmm_vm_node *alloc_hmm_vm_node(unsigned int pgnr,
- struct hmm_vm *vm)
-{
- struct hmm_vm_node *node;
-
- node = kmem_cache_alloc(vm->cache, GFP_KERNEL);
- if (!node)
- return NULL;
-
- INIT_LIST_HEAD(&node->list);
- node->pgnr = pgnr;
- node->size = pgnr_to_size(pgnr);
- node->vm = vm;
-
- return node;
-}
-
-struct hmm_vm_node *hmm_vm_alloc_node(struct hmm_vm *vm, unsigned int pgnr)
-{
- struct list_head *head;
- struct hmm_vm_node *node, *cur, *next;
- unsigned int vm_start, vm_end;
- unsigned int addr;
- unsigned int size;
-
- if (!vm)
- return NULL;
-
- vm_start = vm->start;
- vm_end = vm_node_end(vm->start, vm->pgnr);
- size = pgnr_to_size(pgnr);
-
- addr = vm_start;
- head = &vm->vm_node_list;
-
- node = alloc_hmm_vm_node(pgnr, vm);
- if (!node) {
- dev_err(atomisp_dev, "no memory to allocate hmm vm node.\n");
- return NULL;
- }
-
- spin_lock(&vm->lock);
- /*
- * if list is empty, the loop code will not be executed.
- */
- list_for_each_entry(cur, head, list) {
- /* Add gap between vm areas as helper to not hide overflow */
- addr = PAGE_ALIGN(vm_node_end(cur->start, cur->pgnr) + 1);
-
- if (list_is_last(&cur->list, head)) {
- if (addr + size > vm_end) {
- /* vm area does not have space anymore */
- spin_unlock(&vm->lock);
- kmem_cache_free(vm->cache, node);
- dev_err(atomisp_dev,
- "no enough virtual address space.\n");
- return NULL;
- }
-
- /* We still have vm space to add new node to tail */
- break;
- }
-
- next = list_entry(cur->list.next, struct hmm_vm_node, list);
- if ((next->start - addr) > size)
- break;
- }
- node->start = addr;
- node->vm = vm;
- list_add(&node->list, &cur->list);
- spin_unlock(&vm->lock);
-
- return node;
-}
-
-void hmm_vm_free_node(struct hmm_vm_node *node)
-{
- struct hmm_vm *vm;
-
- if (!node)
- return;
-
- vm = node->vm;
-
- spin_lock(&vm->lock);
- list_del(&node->list);
- spin_unlock(&vm->lock);
-
- kmem_cache_free(vm->cache, node);
-}
-
-struct hmm_vm_node *hmm_vm_find_node_start(struct hmm_vm *vm, unsigned int
addr)
-{
- struct hmm_vm_node *node;
-
- if (!vm)
- return NULL;
-
- spin_lock(&vm->lock);
-
- list_for_each_entry(node, &vm->vm_node_list, list) {
- if (node->start == addr) {
- spin_unlock(&vm->lock);
- return node;
- }
- }
-
- spin_unlock(&vm->lock);
- return NULL;
-}
-
-struct hmm_vm_node *hmm_vm_find_node_in_range(struct hmm_vm *vm,
- unsigned int addr)
-{
- struct hmm_vm_node *node;
-
- if (!vm)
- return NULL;
-
- spin_lock(&vm->lock);
-
- list_for_each_entry(node, &vm->vm_node_list, list) {
- if (addr_in_vm_node(addr, node)) {
- spin_unlock(&vm->lock);
- return node;
- }
- }
-
- spin_unlock(&vm->lock);
- return NULL;
-}
--
2.26.2
_______________________________________________
devel mailing list
de...@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
