diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_vm.h')
-rw-r--r-- | drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_vm.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_vm.h b/drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_vm.h new file mode 100644 index 000000000000..07d40662de32 --- /dev/null +++ b/drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_vm.h @@ -0,0 +1,68 @@ +/* + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + */ + +#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 |