drivers/usb/misc/sisusbvga/sisusb.h - linux - Git at Google

 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
 /*
  * sisusb - usb kernel driver for Net2280/SiS315 based USB2VGA dongles
  *
  * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
  *
  * If distributed as part of the Linux kernel, this code is licensed under the
  * terms of the GPL v2.
  *
  * Otherwise, the following license terms apply:
  *
  * 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.
  * 3) The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED 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 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.
  *
  * Author:	Thomas Winischhofer <thomas@winischhofer.net>
  *
  */

 #ifndef _SISUSB_H_
 #define _SISUSB_H_

 #include <linux/mutex.h>

 /* Version Information */

 #define SISUSB_VERSION		0
 #define SISUSB_REVISION		0
 #define SISUSB_PATCHLEVEL	8

 /* Include console and mode switching code? */

 #include <linux/console.h>
 #include <linux/vt_kern.h>
 #include "sisusb_struct.h"

 /* USB related */

 #define SISUSB_MINOR		133	/* official */

 /* Size of the sisusb input/output buffers */
 #define SISUSB_IBUF_SIZE  0x01000
 #define SISUSB_OBUF_SIZE  0x10000	/* fixed */

 #define NUMOBUFS 8		/* max number of output buffers/output URBs */

 /* About endianness:
  *
  * 1) I/O ports, PCI config registers. The read/write()
  *    calls emulate inX/outX. Hence, the data is
  *    expected/delivered in machine endiannes by this
  *    driver.
  * 2) Video memory. The data is copied 1:1. There is
  *    no swapping. Ever. This means for userland that
  *    the data has to be prepared properly. (Hint:
  *    think graphics data format, command queue,
  *    hardware cursor.)
  * 3) MMIO. Data is copied 1:1. MMIO must be swapped
  *    properly by userland.
  *
  */

 #ifdef __BIG_ENDIAN
 #define SISUSB_CORRECT_ENDIANNESS_PACKET(p)		\
 	do {						\
 		p->header  = cpu_to_le16(p->header);	\
 		p->address = cpu_to_le32(p->address);	\
 		p->data    = cpu_to_le32(p->data);	\
 	} while(0)
 #else
 #define SISUSB_CORRECT_ENDIANNESS_PACKET(p)
 #endif

 struct sisusb_usb_data;

 struct sisusb_urb_context {	/* urb->context for outbound bulk URBs */
 	struct sisusb_usb_data *sisusb;
 	int urbindex;
 	int *actual_length;
 };

 struct sisusb_usb_data {
 	struct usb_device *sisusb_dev;
 	struct usb_interface *interface;
 	struct kref kref;
 	wait_queue_head_t wait_q;	/* for syncind and timeouts */
 	struct mutex lock;	/* general race avoidance */
 	unsigned int ifnum;	/* interface number of the USB device */
 	int minor;		/* minor (for logging clarity) */
 	int isopen;		/* !=0 if open */
 	int present;		/* !=0 if device is present on the bus */
 	int ready;		/* !=0 if device is ready for userland */
 	int numobufs;		/* number of obufs = number of out urbs */
 	char *obuf[NUMOBUFS], *ibuf;	/* transfer buffers */
 	int obufsize, ibufsize;
 	struct urb *sisurbout[NUMOBUFS];
 	struct urb *sisurbin;
 	unsigned char urbstatus[NUMOBUFS];
 	unsigned char completein;
 	struct sisusb_urb_context urbout_context[NUMOBUFS];
 	unsigned long flagb0;
 	unsigned long vrambase;	/* framebuffer base */
 	unsigned int vramsize;	/* framebuffer size (bytes) */
 	unsigned long mmiobase;
 	unsigned int mmiosize;
 	unsigned long ioportbase;
 	unsigned char devinit;	/* device initialized? */
 	unsigned char gfxinit;	/* graphics core initialized? */
 	unsigned short chipid, chipvendor;
 	unsigned short chiprevision;
 #ifdef CONFIG_USB_SISUSBVGA_CON
 	struct SiS_Private *SiS_Pr;
 	unsigned long scrbuf;
 	unsigned int scrbuf_size;
 	int haveconsole, con_first, con_last;
 	int havethisconsole[MAX_NR_CONSOLES];
 	int textmodedestroyed;
 	unsigned int sisusb_num_columns;	/* real number, not vt's idea */
 	int cur_start_addr, con_rolled_over;
 	int sisusb_cursor_loc, bad_cursor_pos;
 	int sisusb_cursor_size_from;
 	int sisusb_cursor_size_to;
 	int current_font_height, current_font_512;
 	int font_backup_size, font_backup_height, font_backup_512;
 	char *font_backup;
 	int font_slot;
 	struct vc_data *sisusb_display_fg;
 	int is_gfx;
 	int con_blanked;
 #endif
 };

 #define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)

 /* USB transport related */

 /* urbstatus */
 #define SU_URB_BUSY   1
 #define SU_URB_ALLOC  2

 /* Endpoints */

 #define SISUSB_EP_GFX_IN	0x0e	/* gfx std packet out(0e)/in(8e) */
 #define SISUSB_EP_GFX_OUT	0x0e

 #define SISUSB_EP_GFX_BULK_OUT	0x01	/* gfx mem bulk out/in */
 #define SISUSB_EP_GFX_BULK_IN	0x02	/* ? 2 is "OUT" ? */

 #define SISUSB_EP_GFX_LBULK_OUT	0x03	/* gfx large mem bulk out */

 #define SISUSB_EP_UNKNOWN_04	0x04	/* ? 4 is "OUT" ? - unused */

 #define SISUSB_EP_BRIDGE_IN	0x0d	/* Net2280 out(0d)/in(8d) */
 #define SISUSB_EP_BRIDGE_OUT	0x0d

 #define SISUSB_TYPE_MEM		0
 #define SISUSB_TYPE_IO		1

 struct sisusb_packet {
 	unsigned short header;
 	u32 address;
 	u32 data;
 } __attribute__ ((__packed__));

 #define CLEARPACKET(packet) memset(packet, 0, 10)

 /* PCI bridge related */

 #define SISUSB_PCI_MEMBASE	0xd0000000
 #define SISUSB_PCI_MMIOBASE	0xe4000000
 #define SISUSB_PCI_IOPORTBASE	0x0000d000

 #define SISUSB_PCI_PSEUDO_MEMBASE	0x10000000
 #define SISUSB_PCI_PSEUDO_MMIOBASE	0x20000000
 #define SISUSB_PCI_PSEUDO_IOPORTBASE	0x0000d000
 #define SISUSB_PCI_PSEUDO_PCIBASE	0x00010000

 #define SISUSB_PCI_MMIOSIZE	(128*1024)
 #define SISUSB_PCI_PCONFSIZE	0x5c

 /* graphics core related */

 #define AROFFSET	0x40
 #define ARROFFSET	0x41
 #define GROFFSET	0x4e
 #define SROFFSET	0x44
 #define CROFFSET	0x54
 #define MISCROFFSET	0x4c
 #define MISCWOFFSET	0x42
 #define INPUTSTATOFFSET 0x5A
 #define PART1OFFSET	0x04
 #define PART2OFFSET	0x10
 #define PART3OFFSET	0x12
 #define PART4OFFSET	0x14
 #define PART5OFFSET	0x16
 #define CAPTUREOFFSET	0x00
 #define VIDEOOFFSET	0x02
 #define COLREGOFFSET	0x48
 #define PELMASKOFFSET	0x46
 #define VGAENABLE	0x43

 #define SISAR		SISUSB_PCI_IOPORTBASE + AROFFSET
 #define SISARR		SISUSB_PCI_IOPORTBASE + ARROFFSET
 #define SISGR		SISUSB_PCI_IOPORTBASE + GROFFSET
 #define SISSR		SISUSB_PCI_IOPORTBASE + SROFFSET
 #define SISCR		SISUSB_PCI_IOPORTBASE + CROFFSET
 #define SISMISCR	SISUSB_PCI_IOPORTBASE + MISCROFFSET
 #define SISMISCW	SISUSB_PCI_IOPORTBASE + MISCWOFFSET
 #define SISINPSTAT	SISUSB_PCI_IOPORTBASE + INPUTSTATOFFSET
 #define SISPART1	SISUSB_PCI_IOPORTBASE + PART1OFFSET
 #define SISPART2	SISUSB_PCI_IOPORTBASE + PART2OFFSET
 #define SISPART3	SISUSB_PCI_IOPORTBASE + PART3OFFSET
 #define SISPART4	SISUSB_PCI_IOPORTBASE + PART4OFFSET
 #define SISPART5	SISUSB_PCI_IOPORTBASE + PART5OFFSET
 #define SISCAP		SISUSB_PCI_IOPORTBASE + CAPTUREOFFSET
 #define SISVID		SISUSB_PCI_IOPORTBASE + VIDEOOFFSET
 #define SISCOLIDXR	SISUSB_PCI_IOPORTBASE + COLREGOFFSET - 1
 #define SISCOLIDX	SISUSB_PCI_IOPORTBASE + COLREGOFFSET
 #define SISCOLDATA	SISUSB_PCI_IOPORTBASE + COLREGOFFSET + 1
 #define SISCOL2IDX	SISPART5
 #define SISCOL2DATA	SISPART5 + 1
 #define SISPEL		SISUSB_PCI_IOPORTBASE + PELMASKOFFSET
 #define SISVGAEN	SISUSB_PCI_IOPORTBASE + VGAENABLE
 #define SISDACA		SISCOLIDX
 #define SISDACD		SISCOLDATA

 /* ioctl related */

 /* Structure argument for SISUSB_GET_INFO ioctl  */
 struct sisusb_info {
 	__u32 sisusb_id;	/* for identifying sisusb */
 #define SISUSB_ID  0x53495355	/* Identify myself with 'SISU' */
 	__u8 sisusb_version;
 	__u8 sisusb_revision;
 	__u8 sisusb_patchlevel;
 	__u8 sisusb_gfxinit;	/* graphics core initialized? */

 	__u32 sisusb_vrambase;
 	__u32 sisusb_mmiobase;
 	__u32 sisusb_iobase;
 	__u32 sisusb_pcibase;

 	__u32 sisusb_vramsize;	/* framebuffer size in bytes */

 	__u32 sisusb_minor;

 	__u32 sisusb_fbdevactive;	/* != 0 if framebuffer device active */

 	__u32 sisusb_conactive;	/* != 0 if console driver active */

 	__u8 sisusb_reserved[28];	/* for future use */
 };

 struct sisusb_command {
 	__u8 operation;		/* see below */
 	__u8 data0;		/* operation dependent */
 	__u8 data1;		/* operation dependent */
 	__u8 data2;		/* operation dependent */
 	__u32 data3;		/* operation dependent */
 	__u32 data4;		/* for future use */
 };

 #define SUCMD_GET	0x01	/* for all: data0 = index, data3 = port */
 #define SUCMD_SET	0x02	/* data1 = value */
 #define SUCMD_SETOR	0x03	/* data1 = or */
 #define SUCMD_SETAND	0x04	/* data1 = and */
 #define SUCMD_SETANDOR	0x05	/* data1 = and, data2 = or */
 #define SUCMD_SETMASK	0x06	/* data1 = data, data2 = mask */

 #define SUCMD_CLRSCR	0x07	/* data0:1:2 = length, data3 = address */

 #define SUCMD_HANDLETEXTMODE 0x08	/* Reset/destroy text mode */

 #define SUCMD_SETMODE	0x09	/* Set a display mode (data3 = SiS mode) */
 #define SUCMD_SETVESAMODE 0x0a	/* Set a display mode (data3 = VESA mode) */

 #define SISUSB_COMMAND		_IOWR(0xF3,0x3D,struct sisusb_command)
 #define SISUSB_GET_CONFIG_SIZE	_IOR(0xF3,0x3E,__u32)
 #define SISUSB_GET_CONFIG	_IOR(0xF3,0x3F,struct sisusb_info)

 #endif /* SISUSB_H */
	/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
	/*
	* sisusb - usb kernel driver for Net2280/SiS315 based USB2VGA dongles
	*
	* Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
	*
	* If distributed as part of the Linux kernel, this code is licensed under the
	* terms of the GPL v2.
	*
	* Otherwise, the following license terms apply:
	*
	* 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.
	* 3) The name of the author may not be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED 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 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.
	*
	* Author: Thomas Winischhofer <thomas@winischhofer.net>
	*
	*/

	#ifndef _SISUSB_H_
	#define _SISUSB_H_

	#include <linux/mutex.h>

	/* Version Information */

	#define SISUSB_VERSION 0
	#define SISUSB_REVISION 0
	#define SISUSB_PATCHLEVEL 8

	/* Include console and mode switching code? */

	#include <linux/console.h>
	#include <linux/vt_kern.h>
	#include "sisusb_struct.h"

	/* USB related */

	#define SISUSB_MINOR 133 /* official */

	/* Size of the sisusb input/output buffers */
	#define SISUSB_IBUF_SIZE 0x01000
	#define SISUSB_OBUF_SIZE 0x10000 /* fixed */

	#define NUMOBUFS 8 /* max number of output buffers/output URBs */

	/* About endianness:
	*
	* 1) I/O ports, PCI config registers. The read/write()
	* calls emulate inX/outX. Hence, the data is
	* expected/delivered in machine endiannes by this
	* driver.
	* 2) Video memory. The data is copied 1:1. There is
	* no swapping. Ever. This means for userland that
	* the data has to be prepared properly. (Hint:
	* think graphics data format, command queue,
	* hardware cursor.)
	* 3) MMIO. Data is copied 1:1. MMIO must be swapped
	* properly by userland.
	*
	*/

	#ifdef __BIG_ENDIAN
	#define SISUSB_CORRECT_ENDIANNESS_PACKET(p) \
	do { \
	p->header = cpu_to_le16(p->header); \
	p->address = cpu_to_le32(p->address); \
	p->data = cpu_to_le32(p->data); \
	} while(0)
	#else
	#define SISUSB_CORRECT_ENDIANNESS_PACKET(p)
	#endif

	struct sisusb_usb_data;

	struct sisusb_urb_context { /* urb->context for outbound bulk URBs */
	struct sisusb_usb_data *sisusb;
	int urbindex;
	int *actual_length;
	};

	struct sisusb_usb_data {
	struct usb_device *sisusb_dev;
	struct usb_interface *interface;
	struct kref kref;
	wait_queue_head_t wait_q; /* for syncind and timeouts */
	struct mutex lock; /* general race avoidance */
	unsigned int ifnum; /* interface number of the USB device */
	int minor; /* minor (for logging clarity) */
	int isopen; /* !=0 if open */
	int present; /* !=0 if device is present on the bus */
	int ready; /* !=0 if device is ready for userland */
	int numobufs; /* number of obufs = number of out urbs */
	char obuf[NUMOBUFS], ibuf; /* transfer buffers */
	int obufsize, ibufsize;
	struct urb *sisurbout[NUMOBUFS];
	struct urb *sisurbin;
	unsigned char urbstatus[NUMOBUFS];
	unsigned char completein;
	struct sisusb_urb_context urbout_context[NUMOBUFS];
	unsigned long flagb0;
	unsigned long vrambase; /* framebuffer base */
	unsigned int vramsize; /* framebuffer size (bytes) */
	unsigned long mmiobase;
	unsigned int mmiosize;
	unsigned long ioportbase;
	unsigned char devinit; /* device initialized? */
	unsigned char gfxinit; /* graphics core initialized? */
	unsigned short chipid, chipvendor;
	unsigned short chiprevision;
	#ifdef CONFIG_USB_SISUSBVGA_CON
	struct SiS_Private *SiS_Pr;
	unsigned long scrbuf;
	unsigned int scrbuf_size;
	int haveconsole, con_first, con_last;
	int havethisconsole[MAX_NR_CONSOLES];
	int textmodedestroyed;
	unsigned int sisusb_num_columns; /* real number, not vt's idea */
	int cur_start_addr, con_rolled_over;
	int sisusb_cursor_loc, bad_cursor_pos;
	int sisusb_cursor_size_from;
	int sisusb_cursor_size_to;
	int current_font_height, current_font_512;
	int font_backup_size, font_backup_height, font_backup_512;
	char *font_backup;
	int font_slot;
	struct vc_data *sisusb_display_fg;
	int is_gfx;
	int con_blanked;
	#endif
	};

	#define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)

	/* USB transport related */

	/* urbstatus */
	#define SU_URB_BUSY 1
	#define SU_URB_ALLOC 2

	/* Endpoints */

	#define SISUSB_EP_GFX_IN 0x0e /* gfx std packet out(0e)/in(8e) */
	#define SISUSB_EP_GFX_OUT 0x0e

	#define SISUSB_EP_GFX_BULK_OUT 0x01 /* gfx mem bulk out/in */
	#define SISUSB_EP_GFX_BULK_IN 0x02 /* ? 2 is "OUT" ? */

	#define SISUSB_EP_GFX_LBULK_OUT 0x03 /* gfx large mem bulk out */

	#define SISUSB_EP_UNKNOWN_04 0x04 /* ? 4 is "OUT" ? - unused */

	#define SISUSB_EP_BRIDGE_IN 0x0d /* Net2280 out(0d)/in(8d) */
	#define SISUSB_EP_BRIDGE_OUT 0x0d

	#define SISUSB_TYPE_MEM 0
	#define SISUSB_TYPE_IO 1

	struct sisusb_packet {
	unsigned short header;
	u32 address;
	u32 data;
	} __attribute__ ((__packed__));

	#define CLEARPACKET(packet) memset(packet, 0, 10)

	/* PCI bridge related */

	#define SISUSB_PCI_MEMBASE 0xd0000000
	#define SISUSB_PCI_MMIOBASE 0xe4000000
	#define SISUSB_PCI_IOPORTBASE 0x0000d000

	#define SISUSB_PCI_PSEUDO_MEMBASE 0x10000000
	#define SISUSB_PCI_PSEUDO_MMIOBASE 0x20000000
	#define SISUSB_PCI_PSEUDO_IOPORTBASE 0x0000d000
	#define SISUSB_PCI_PSEUDO_PCIBASE 0x00010000

	#define SISUSB_PCI_MMIOSIZE (128*1024)
	#define SISUSB_PCI_PCONFSIZE 0x5c

	/* graphics core related */

	#define AROFFSET 0x40
	#define ARROFFSET 0x41
	#define GROFFSET 0x4e
	#define SROFFSET 0x44
	#define CROFFSET 0x54
	#define MISCROFFSET 0x4c
	#define MISCWOFFSET 0x42
	#define INPUTSTATOFFSET 0x5A
	#define PART1OFFSET 0x04
	#define PART2OFFSET 0x10
	#define PART3OFFSET 0x12
	#define PART4OFFSET 0x14
	#define PART5OFFSET 0x16
	#define CAPTUREOFFSET 0x00
	#define VIDEOOFFSET 0x02
	#define COLREGOFFSET 0x48
	#define PELMASKOFFSET 0x46
	#define VGAENABLE 0x43

	#define SISAR SISUSB_PCI_IOPORTBASE + AROFFSET
	#define SISARR SISUSB_PCI_IOPORTBASE + ARROFFSET
	#define SISGR SISUSB_PCI_IOPORTBASE + GROFFSET
	#define SISSR SISUSB_PCI_IOPORTBASE + SROFFSET
	#define SISCR SISUSB_PCI_IOPORTBASE + CROFFSET
	#define SISMISCR SISUSB_PCI_IOPORTBASE + MISCROFFSET
	#define SISMISCW SISUSB_PCI_IOPORTBASE + MISCWOFFSET
	#define SISINPSTAT SISUSB_PCI_IOPORTBASE + INPUTSTATOFFSET
	#define SISPART1 SISUSB_PCI_IOPORTBASE + PART1OFFSET
	#define SISPART2 SISUSB_PCI_IOPORTBASE + PART2OFFSET
	#define SISPART3 SISUSB_PCI_IOPORTBASE + PART3OFFSET
	#define SISPART4 SISUSB_PCI_IOPORTBASE + PART4OFFSET
	#define SISPART5 SISUSB_PCI_IOPORTBASE + PART5OFFSET
	#define SISCAP SISUSB_PCI_IOPORTBASE + CAPTUREOFFSET
	#define SISVID SISUSB_PCI_IOPORTBASE + VIDEOOFFSET
	#define SISCOLIDXR SISUSB_PCI_IOPORTBASE + COLREGOFFSET - 1
	#define SISCOLIDX SISUSB_PCI_IOPORTBASE + COLREGOFFSET
	#define SISCOLDATA SISUSB_PCI_IOPORTBASE + COLREGOFFSET + 1
	#define SISCOL2IDX SISPART5
	#define SISCOL2DATA SISPART5 + 1
	#define SISPEL SISUSB_PCI_IOPORTBASE + PELMASKOFFSET
	#define SISVGAEN SISUSB_PCI_IOPORTBASE + VGAENABLE
	#define SISDACA SISCOLIDX
	#define SISDACD SISCOLDATA

	/* ioctl related */

	/* Structure argument for SISUSB_GET_INFO ioctl */
	struct sisusb_info {
	__u32 sisusb_id; /* for identifying sisusb */
	#define SISUSB_ID 0x53495355 /* Identify myself with 'SISU' */
	__u8 sisusb_version;
	__u8 sisusb_revision;
	__u8 sisusb_patchlevel;
	__u8 sisusb_gfxinit; /* graphics core initialized? */

	__u32 sisusb_vrambase;
	__u32 sisusb_mmiobase;
	__u32 sisusb_iobase;
	__u32 sisusb_pcibase;

	__u32 sisusb_vramsize; /* framebuffer size in bytes */

	__u32 sisusb_minor;

	__u32 sisusb_fbdevactive; /* != 0 if framebuffer device active */

	__u32 sisusb_conactive; /* != 0 if console driver active */

	__u8 sisusb_reserved[28]; /* for future use */
	};

	struct sisusb_command {
	__u8 operation; /* see below */
	__u8 data0; /* operation dependent */
	__u8 data1; /* operation dependent */
	__u8 data2; /* operation dependent */
	__u32 data3; /* operation dependent */
	__u32 data4; /* for future use */
	};

	#define SUCMD_GET 0x01 /* for all: data0 = index, data3 = port */
	#define SUCMD_SET 0x02 /* data1 = value */
	#define SUCMD_SETOR 0x03 /* data1 = or */
	#define SUCMD_SETAND 0x04 /* data1 = and */
	#define SUCMD_SETANDOR 0x05 /* data1 = and, data2 = or */
	#define SUCMD_SETMASK 0x06 /* data1 = data, data2 = mask */

	#define SUCMD_CLRSCR 0x07 /* data0:1:2 = length, data3 = address */

	#define SUCMD_HANDLETEXTMODE 0x08 /* Reset/destroy text mode */

	#define SUCMD_SETMODE 0x09 /* Set a display mode (data3 = SiS mode) */
	#define SUCMD_SETVESAMODE 0x0a /* Set a display mode (data3 = VESA mode) */

	#define SISUSB_COMMAND _IOWR(0xF3,0x3D,struct sisusb_command)
	#define SISUSB_GET_CONFIG_SIZE _IOR(0xF3,0x3E,__u32)
	#define SISUSB_GET_CONFIG _IOR(0xF3,0x3F,struct sisusb_info)

	#endif /* SISUSB_H */