| AGPIOC_INFO |
| | Returns state of the agp system. The result is a pointer to the following structure:
typedef struct _agp_info {
agp_version version; /* version of the driver */
u_int32_t bridge_id; /* bridge vendor/device */
u_int32_t agp_mode; /* mode info of bridge*/
off_t aper_base; /* base of aperture */
size_t aper_size;/* size of aperture */
size_t pg_total; /* max pages (swap + system) */
size_t pg_system;/* max pages (system) */
size_t pg_used; /* current pages used */
} agp_info;
|
| AGPIOC_ACQUIRE |
| | Acquire control of the AGP chipset for use by this client. Returns EBUSY if the AGP chipset is already acquired by another client. |
| AGPIOC_RELEASE |
| | Release control of the AGP chipset. This does not unbind or free any allocated memory, which is the responsibility of the client to handle if necessary. |
| AGPIOC_SETUP |
| | Enable the AGP hardware with the relevant mode. This ioctl(2) takes the following structure:
typedef struct _agp_setup {
u_int32_t agp_mode; /* mode info of bridge */
} agp_setup;
The mode bits are defined in
.In sys/agpio.h . |
| AGPIOC_ALLOCATE |
| | Allocate physical memory suitable for mapping into the AGP aperture. This ioctl(2) takes the following structure:
typedef struct _agp_allocate {
int key; /* tag of allocation */
size_t pg_count; /* number of pages */
u_int32_t type; /* 0 == normal, other devspec */
u_int32_t physical; /* device specific (some devices
* need a phys address of the
* actual page behind the gatt
* table) */
} agp_allocate;
Returns a handle to the allocated memory. |
| AGPIOC_DEALLOCATE |
| | Free the previously allocated memory associated with the handle passed. |
| AGPIOC_BIND |
| | Bind the allocated memory at given offset with the AGP aperture. Returns EINVAL if the memory is already bound or the offset is not at AGP page boundary. This ioctl(2) takes the following structure:
typedef struct _agp_bind {
int key; /* tag of allocation */
off_t pg_start; /* starting page to populate */
} agp_bind;
The tag of allocation is the handle returned by AGPIOC_ALLOCATE. |
| AGPIOC_UNBIND |
| | Unbind memory from the AGP aperture. Returns EINVAL if the memory is not bound. This ioctl(2) takes the following structure:
typedef struct _agp_unbind {
int key; /* tag of allocation */
u_int32_t priority;/* priority for paging out */
} agp_unbind;
|
|
