From 8ef6b8a67b015b4abe74d0488569a47e1f729a9b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 20 May 2020 23:04:09 +0200 Subject: [PATCH] media: atomisp: get rid of hmm_vm.c This is not used anywhere. So, let's trash it. Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/atomisp/Makefile | 1 - .../media/atomisp/include/hmm/hmm_vm.h | 65 ------ .../staging/media/atomisp/pci/hmm/hmm_vm.c | 212 ------------------ 3 files changed, 278 deletions(-) delete mode 100644 drivers/staging/media/atomisp/include/hmm/hmm_vm.h 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 -#include -#include -#include - -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_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 -#include -#include -#include -#include - -#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; -} -- 2.39.5