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/*-
* Copyright (c) 2000 Doug Rabson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_AGPIO_H_
#define _SYS_AGPIO_H_
/*
* The AGP gatt uses 4k pages irrespective of the host page size.
*/
#define AGP_PAGE_SIZE 4096
#define AGP_PAGE_SHIFT 12
/*
* Macros to manipulate AGP mode words.
*
* SBA = Sideband Address Port
* FW = Fast Writes
*/
#define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24)
#define AGP_MODE_GET_ARQSZ(x) (((x) & 0x0000e000U) >> 13)
#define AGP_MODE_GET_CAL(x) (((x) & 0x00001c00U) >> 10)
#define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9)
#define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8)
#define AGP_MODE_GET_GART_64(x) (((x) & 0x00000080U) >> 7)
#define AGP_MODE_GET_OVER_4G(x) (((x) & 0x00000020U) >> 5)
#define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4)
#define AGP_MODE_GET_MODE_3(x) (((x) & 0x00000008U) >> 3)
#define AGP_MODE_GET_RATE(x) ((x) & 0x00000007U)
#define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24))
#define AGP_MODE_SET_ARQSZ(x,v) (((x) & ~0x0000e000U) | ((v) << 13))
#define AGP_MODE_SET_CAL(x,v) (((x) & ~0x00001c00U) | ((v) << 10))
#define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9))
#define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8))
#define AGP_MODE_SET_GART_64(x,v) (((x) & ~0x00000080U) | ((v) << 7))
#define AGP_MODE_SET_OVER_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5))
#define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4))
#define AGP_MODE_SET_MODE_3(x,v) (((x) & ~0x00000008U) | ((v) << 3))
#define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v))
#define AGP_MODE_V2_RATE_1x 0x00000001
#define AGP_MODE_V2_RATE_2x 0x00000002
#define AGP_MODE_V2_RATE_4x 0x00000004
#define AGP_MODE_V3_RATE_4x 0x00000001
#define AGP_MODE_V3_RATE_8x 0x00000002
#define AGP_MODE_V3_RATE_RSVD 0x00000004
/* XXX: Compat */
#define AGP_MODE_GET_4G(x) AGP_MODE_GET_OVER_4G(x)
#define AGP_MODE_SET_4G(x) AGP_MODE_SET_OVER_4G(x)
#define AGP_MODE_RATE_1x AGP_MODE_V2_RATE_1x
#define AGP_MODE_RATE_2x AGP_MODE_V2_RATE_2x
#define AGP_MODE_RATE_4x AGP_MODE_V2_RATE_4x
#define AGPIOC_BASE 'A'
#define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info)
#define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1)
#define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2)
#define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup)
#if 0
#define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region)
#define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region)
#endif
#define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate)
#define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
#define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind)
#define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind)
typedef struct _agp_version {
u_int16_t major;
u_int16_t minor;
} agp_version;
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;
typedef struct _agp_setup {
u_int32_t agp_mode; /* mode info of bridge */
} agp_setup;
#if 0
/*
* The "prot" down below needs still a "sleep" flag somehow ...
*/
typedef struct _agp_segment {
off_t pg_start; /* starting page to populate */
size_t pg_count; /* number of pages */
int prot; /* prot flags for mmap */
} agp_segment;
typedef struct _agp_region {
pid_t pid; /* pid of process */
size_t seg_count; /* number of segments */
struct _agp_segment *seg_list;
} agp_region;
#endif
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;
typedef struct _agp_bind {
int key; /* tag of allocation */
off_t pg_start; /* starting page to populate */
} agp_bind;
typedef struct _agp_unbind {
int key; /* tag of allocation */
u_int32_t priority; /* priority for paging out */
} agp_unbind;
#endif /* !_SYS_AGPIO_H_ */

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