Attachment 29835 Details for Bug 50503 – file.diff

[patch] file.diff

file.diff (text/plain), 3.17 KB, created by Alex Semenyaka on 2003-03-31 22:20:06 UTC

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Creator: Alex Semenyaka

Created: 2003-03-31 22:20:06 UTC

Size: 3.17 KB

patch

obsolete

>--- /usr/src/share/man/man4/agp.4	Wed Feb 26 00:38:48 2003
>+++ agp.4	Tue Apr  1 01:07:55 2003
>@@ -58,6 +58,99 @@
> is for running
> .Xr XFree86 1
> on the Intel i81x controllers.
>+.Sh IOCTLS
>+The
>+.Pa /dev/agpgart
>+can be opened and a few operations can be performed on it. The
>+.Xr ioctl 2
>+command codes below are defined in
>+.Aq Pa sys/agpio.h .
>+.Bl -tag -width AGPIOC_DEALLOCATE
>+.It Dv AGPIOC_INFO
>+.Pq Li "agp_info *"
>+Returns the state of AGP system. The result is a pointer to
>+the following structure:
>+.Bd -literal
>+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;
>+.Ed
>+.Pp
>+.It Dv AGPIOC_ACQUIRE
>+Acquire AGP chipset for use by the kernel. Returns
>+.Er EBUSY
>+if the AGP chipset is already acquired by another user.
>+.It Dv AGPIOC_RELEASE
>+Release AGP chipset.
>+.It Dv AGPIOC_SETUP
>+.Pq Li "agp_setup *"
>+Enable the
>+.Nm
>+hardware with the relevant mode. The argument is the pointer to the
>+following type:
>+.Bd -literal
>+typedef struct _agp_setup {
>+	u_int32_t agp_mode;		/* mode info of bridge          */
>+} agp_setup;
>+.Ed
>+.Pp
>+The mode bits are defined in
>+.Aq Pa sys/agpio.h .
>+.It Dv AGPIOC_ALLOCATE
>+.Pq Li "agp_allocate *"
>+Allocate physical memory suitable for mapping into the AGP aperture.
>+The third argument is the pointer to the following structure:
>+.Bd -literal
>+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;
>+.Ed
>+.Pp
>+Returns the handle to the memory allocated.
>+.It Dv AGPIOC_DEALLOCATE
>+.Pq Li "int *"
>+Free the previously allocated memory associated with the handle passed.
>+.It Dv AGPIOC_BIND
>+.Pq Li "agp_bind *"
>+Bind the allocated memory at given offset with the AGP aperture. Returns
>+.Er EINVAL
>+if the memory is already bound or the offset is not at an AGP page boundary.
>+The third argument is the pointer to the following structure:
>+.Bd -literal
>+typedef struct _agp_bind {
>+	int key;		/* tag of allocation            */
>+	off_t pg_start;		/* starting page to populate    */
>+} agp_bind;
>+.Ed
>+.Pp
>+The tag of allocation here means the handle returned by AGPIOC_ALLOCATE.
>+.It Dv AGPIOC_UNBIND
>+.Pq Li "agp_unbind *"
>+Unbind memory from the AGP aperture. Return
>+.Er EINVAL
>+if the memory is not bound. The third argument is the pointer to the
>+following structure:
>+.Bd -literal
>+typedef struct _agp_unbind {
>+	int key;		/* tag of allocation            */
>+	u_int32_t priority;	/* priority for paging out      */
>+} agp_unbind;
>+.Ed
>+.Pp
>+.El
> .Sh FILES
> .Bl -tag -width ".Pa /dev/agpgart" -compact
> .It Pa /dev/agpgart

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