diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-19 15:07:04 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-24 17:41:34 +0000 |
| commit | 13ccf3ad99a45052664f2c1a6c64899f9d778152 (patch) | |
| tree | 6e8f43fcb8e7f1c266b8c13a670c206bbf34bc96 /arch/arm/mm/vmregion.h | |
| parent | ac50e950784cae1c26ad9e09ebd8f8c706131eb3 (diff) | |
ARM: dma-mapping: split out vmregion code from dma coherent mapping code
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/arm/mm/vmregion.h')
| -rw-r--r-- | arch/arm/mm/vmregion.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/mm/vmregion.h b/arch/arm/mm/vmregion.h new file mode 100644 index 000000000000..6b2cdbdf3a85 --- /dev/null +++ b/arch/arm/mm/vmregion.h @@ -0,0 +1,29 @@ +#ifndef VMREGION_H +#define VMREGION_H + +#include <linux/spinlock.h> +#include <linux/list.h> + +struct page; + +struct arm_vmregion_head { + spinlock_t vm_lock; + struct list_head vm_list; + unsigned long vm_start; + unsigned long vm_end; +}; + +struct arm_vmregion { + struct list_head vm_list; + unsigned long vm_start; + unsigned long vm_end; + struct page *vm_pages; + int vm_active; +}; + +struct arm_vmregion *arm_vmregion_alloc(struct arm_vmregion_head *, size_t, gfp_t); +struct arm_vmregion *arm_vmregion_find(struct arm_vmregion_head *, unsigned long); +struct arm_vmregion *arm_vmregion_find_remove(struct arm_vmregion_head *, unsigned long); +void arm_vmregion_free(struct arm_vmregion_head *, struct arm_vmregion *); + +#endif |