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Use the -tag list to document agp(4) ioctls.

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This commit is contained in:
Ruslan Ermilov 2003-05-20 22:06:43 +00:00
parent 72f00208e5
commit 5ab9b7eff9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=115186
1 changed files with 15 additions and 15 deletions
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30
share/man/man4/agp.4
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@ -65,7 +65,8 @@ operations can be performed on
.Pa /dev/agpgart ,
which are defined in
.Aq Pa sys/agpio.h :
.Ss Dv AGPIOC_INFO
.Bl -tag -width indent
.It Dv AGPIOC_INFO
Returns state of the
.Nm
system.
@ -82,16 +83,16 @@ typedef struct _agp_info {
size_t pg_used; /* current pages used */
} agp_info;
.Ed
.Ss Dv AGPIOC_ACQUIRE
.It Dv AGPIOC_ACQUIRE
Acquire control of the AGP chipset for use by this client.
Returns
.Er EBUSY
if the AGP chipset is already acquired by another client.
.Ss Dv AGPIOC_RELEASE
.It Dv 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.
.Ss Dv AGPIOC_SETUP
.It Dv AGPIOC_SETUP
Enable the AGP hardware with the relevant mode.
This
.Xr ioctl 2
@ -104,7 +105,7 @@ typedef struct _agp_setup {
.Pp
The mode bits are defined in
.Aq Pa sys/agpio.h .
.Ss Dv AGPIOC_ALLOCATE
.It Dv AGPIOC_ALLOCATE
Allocate physical memory suitable for mapping into the AGP aperture.
This
.Xr ioctl 2
@ -114,17 +115,17 @@ 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
u_int32_t physical; /* device specific (some devices
* need a phys address of the
* actual page behind the gatt
* table) */
} agp_allocate;
.Ed
.Pp
Returns a handle to the allocated memory.
.Ss Dv AGPIOC_DEALLOCATE
.It Dv AGPIOC_DEALLOCATE
Free the previously allocated memory associated with the handle passed.
.Ss Dv AGPIOC_BIND
.It Dv AGPIOC_BIND
Bind the allocated memory at given offset with the AGP aperture.
Returns
.Er EINVAL
@ -139,17 +140,15 @@ typedef struct _agp_bind {
} agp_bind;
.Ed
.Pp
The
.Sq tag of allocation ,
is the handle returned by
.Dv AGPIOC_ALLOCATE.
.Ss Dv AGPIOC_UNBIND
The tag of allocation is the handle returned by
.Dv AGPIOC_ALLOCATE .
.It Dv AGPIOC_UNBIND
Unbind memory from the AGP aperture.
Returns
.Er EINVAL
if the memory is not bound.
This
.Xr ioctl
.Xr ioctl 2
takes the following structure:
.Bd -literal
typedef struct _agp_unbind {
@ -157,6 +156,7 @@ typedef struct _agp_unbind {
u_int32_t priority; /* priority for paging out */
} agp_unbind;
.Ed
.El
.Sh FILES
.Bl -tag -width ".Pa /dev/agpgart" -compact
.It Pa /dev/agpgart