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head/sys/compat/linuxkpi/common/include/linux/io-mapping.h
| Show All 22 Lines | |||||
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||||
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||||
| * | * | ||||
| * $FreeBSD$ | * $FreeBSD$ | ||||
| */ | */ | ||||
| #ifndef _LINUX_IO_MAPPING_H_ | #ifndef _LINUX_IO_MAPPING_H_ | ||||
| #define _LINUX_IO_MAPPING_H_ | #define _LINUX_IO_MAPPING_H_ | ||||
| #include <sys/types.h> | |||||
| #include <machine/vm.h> | |||||
| #include <linux/types.h> | #include <linux/types.h> | ||||
| #include <linux/io.h> | #include <linux/io.h> | ||||
| #include <linux/slab.h> | |||||
| struct io_mapping; | struct io_mapping { | ||||
| unsigned long base; | |||||
| unsigned long size; | |||||
| void *mem; | |||||
| vm_memattr_t attr; | |||||
| }; | |||||
| static inline struct io_mapping * | static inline struct io_mapping * | ||||
| io_mapping_init_wc(struct io_mapping *mapping, resource_size_t base, | |||||
| unsigned long size) | |||||
| { | |||||
| mapping->base = base; | |||||
| mapping->size = size; | |||||
| mapping->mem = ioremap_wc(base, size); | |||||
| mapping->attr = VM_MEMATTR_WRITE_COMBINING; | |||||
| return (mapping); | |||||
| } | |||||
| static inline struct io_mapping * | |||||
| io_mapping_create_wc(resource_size_t base, unsigned long size) | io_mapping_create_wc(resource_size_t base, unsigned long size) | ||||
| { | { | ||||
| struct io_mapping *mapping; | |||||
| return ioremap_wc(base, size); | mapping = kmalloc(sizeof(*mapping), GFP_KERNEL); | ||||
| if (mapping == NULL) | |||||
| return (NULL); | |||||
| return (io_mapping_init_wc(mapping, base, size)); | |||||
| } | } | ||||
| static inline void | static inline void | ||||
| io_mapping_fini(struct io_mapping *mapping) | |||||
| { | |||||
| iounmap(mapping->mem); | |||||
| } | |||||
| static inline void | |||||
| io_mapping_free(struct io_mapping *mapping) | io_mapping_free(struct io_mapping *mapping) | ||||
| { | { | ||||
| iounmap(mapping); | io_mapping_fini(mapping->mem); | ||||
| kfree(mapping); | |||||
| } | } | ||||
| static inline void * | static inline void * | ||||
| io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset) | io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset) | ||||
| { | { | ||||
| return (((char *)mapping) + offset); | return ((char *)mapping->mem + offset); | ||||
| } | } | ||||
| static inline void | static inline void | ||||
| io_mapping_unmap_atomic(void *vaddr) | io_mapping_unmap_atomic(void *vaddr) | ||||
| { | { | ||||
| } | } | ||||
| static inline void * | static inline void * | ||||
| io_mapping_map_wc(struct io_mapping *mapping, unsigned long offset) | io_mapping_map_wc(struct io_mapping *mapping, unsigned long offset, | ||||
| unsigned long size) | |||||
| { | { | ||||
| return (((char *) mapping) + offset); | return ((char *)mapping->mem + offset); | ||||
| } | } | ||||
| static inline void | static inline void | ||||
| io_mapping_unmap(void *vaddr) | io_mapping_unmap(void *vaddr) | ||||
| { | { | ||||
| } | } | ||||
| #endif /* _LINUX_IO_MAPPING_H_ */ | #endif /* _LINUX_IO_MAPPING_H_ */ | ||||