313 lines
9.8 KiB
C
313 lines
9.8 KiB
C
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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/*
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* sisusb - usb kernel driver for Net2280/SiS315 based USB2VGA dongles
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*
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* Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
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*
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* If distributed as part of the Linux kernel, this code is licensed under the
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* terms of the GPL v2.
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*
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* Otherwise, the following license terms apply:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1) Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3) The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Author: Thomas Winischhofer <thomas@winischhofer.net>
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*
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*/
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#ifndef _SISUSB_H_
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#define _SISUSB_H_
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#ifdef CONFIG_COMPAT
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#define SISUSB_NEW_CONFIG_COMPAT
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#endif
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#include <linux/mutex.h>
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/* For older kernels, support for text consoles is by default
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* off. To enable text console support, change the following:
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*/
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/* #define CONFIG_USB_SISUSBVGA_CON */
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/* Version Information */
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#define SISUSB_VERSION 0
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#define SISUSB_REVISION 0
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#define SISUSB_PATCHLEVEL 8
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/* Include console and mode switching code? */
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#ifdef CONFIG_USB_SISUSBVGA_CON
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#define INCL_SISUSB_CON 1
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#endif
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#include <linux/console.h>
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#include <linux/vt_kern.h>
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#include "sisusb_struct.h"
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/* USB related */
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#define SISUSB_MINOR 133 /* official */
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/* Size of the sisusb input/output buffers */
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#define SISUSB_IBUF_SIZE 0x01000
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#define SISUSB_OBUF_SIZE 0x10000 /* fixed */
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#define NUMOBUFS 8 /* max number of output buffers/output URBs */
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/* About endianness:
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*
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* 1) I/O ports, PCI config registers. The read/write()
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* calls emulate inX/outX. Hence, the data is
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* expected/delivered in machine endiannes by this
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* driver.
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* 2) Video memory. The data is copied 1:1. There is
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* no swapping. Ever. This means for userland that
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* the data has to be prepared properly. (Hint:
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* think graphics data format, command queue,
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* hardware cursor.)
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* 3) MMIO. Data is copied 1:1. MMIO must be swapped
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* properly by userland.
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*
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*/
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#ifdef __BIG_ENDIAN
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#define SISUSB_CORRECT_ENDIANNESS_PACKET(p) \
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do { \
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p->header = cpu_to_le16(p->header); \
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p->address = cpu_to_le32(p->address); \
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p->data = cpu_to_le32(p->data); \
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} while(0)
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#else
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#define SISUSB_CORRECT_ENDIANNESS_PACKET(p)
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#endif
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struct sisusb_usb_data;
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struct sisusb_urb_context { /* urb->context for outbound bulk URBs */
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struct sisusb_usb_data *sisusb;
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int urbindex;
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int *actual_length;
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};
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struct sisusb_usb_data {
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struct usb_device *sisusb_dev;
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struct usb_interface *interface;
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struct kref kref;
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wait_queue_head_t wait_q; /* for syncind and timeouts */
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struct mutex lock; /* general race avoidance */
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unsigned int ifnum; /* interface number of the USB device */
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int minor; /* minor (for logging clarity) */
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int isopen; /* !=0 if open */
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int present; /* !=0 if device is present on the bus */
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int ready; /* !=0 if device is ready for userland */
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int numobufs; /* number of obufs = number of out urbs */
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char *obuf[NUMOBUFS], *ibuf; /* transfer buffers */
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int obufsize, ibufsize;
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struct urb *sisurbout[NUMOBUFS];
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struct urb *sisurbin;
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unsigned char urbstatus[NUMOBUFS];
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unsigned char completein;
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struct sisusb_urb_context urbout_context[NUMOBUFS];
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unsigned long flagb0;
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unsigned long vrambase; /* framebuffer base */
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unsigned int vramsize; /* framebuffer size (bytes) */
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unsigned long mmiobase;
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unsigned int mmiosize;
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unsigned long ioportbase;
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unsigned char devinit; /* device initialized? */
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unsigned char gfxinit; /* graphics core initialized? */
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unsigned short chipid, chipvendor;
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unsigned short chiprevision;
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#ifdef INCL_SISUSB_CON
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struct SiS_Private *SiS_Pr;
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unsigned long scrbuf;
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unsigned int scrbuf_size;
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int haveconsole, con_first, con_last;
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int havethisconsole[MAX_NR_CONSOLES];
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int textmodedestroyed;
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unsigned int sisusb_num_columns; /* real number, not vt's idea */
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int cur_start_addr, con_rolled_over;
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int sisusb_cursor_loc, bad_cursor_pos;
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int sisusb_cursor_size_from;
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int sisusb_cursor_size_to;
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int current_font_height, current_font_512;
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int font_backup_size, font_backup_height, font_backup_512;
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char *font_backup;
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int font_slot;
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struct vc_data *sisusb_display_fg;
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int is_gfx;
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int con_blanked;
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#endif
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};
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#define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)
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/* USB transport related */
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/* urbstatus */
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#define SU_URB_BUSY 1
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#define SU_URB_ALLOC 2
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/* Endpoints */
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#define SISUSB_EP_GFX_IN 0x0e /* gfx std packet out(0e)/in(8e) */
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#define SISUSB_EP_GFX_OUT 0x0e
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#define SISUSB_EP_GFX_BULK_OUT 0x01 /* gfx mem bulk out/in */
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#define SISUSB_EP_GFX_BULK_IN 0x02 /* ? 2 is "OUT" ? */
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#define SISUSB_EP_GFX_LBULK_OUT 0x03 /* gfx large mem bulk out */
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#define SISUSB_EP_UNKNOWN_04 0x04 /* ? 4 is "OUT" ? - unused */
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#define SISUSB_EP_BRIDGE_IN 0x0d /* Net2280 out(0d)/in(8d) */
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#define SISUSB_EP_BRIDGE_OUT 0x0d
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#define SISUSB_TYPE_MEM 0
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#define SISUSB_TYPE_IO 1
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struct sisusb_packet {
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unsigned short header;
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u32 address;
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u32 data;
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} __attribute__ ((__packed__));
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#define CLEARPACKET(packet) memset(packet, 0, 10)
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/* PCI bridge related */
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#define SISUSB_PCI_MEMBASE 0xd0000000
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#define SISUSB_PCI_MMIOBASE 0xe4000000
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#define SISUSB_PCI_IOPORTBASE 0x0000d000
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#define SISUSB_PCI_PSEUDO_MEMBASE 0x10000000
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#define SISUSB_PCI_PSEUDO_MMIOBASE 0x20000000
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#define SISUSB_PCI_PSEUDO_IOPORTBASE 0x0000d000
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#define SISUSB_PCI_PSEUDO_PCIBASE 0x00010000
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#define SISUSB_PCI_MMIOSIZE (128*1024)
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#define SISUSB_PCI_PCONFSIZE 0x5c
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/* graphics core related */
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#define AROFFSET 0x40
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#define ARROFFSET 0x41
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#define GROFFSET 0x4e
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#define SROFFSET 0x44
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#define CROFFSET 0x54
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#define MISCROFFSET 0x4c
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#define MISCWOFFSET 0x42
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#define INPUTSTATOFFSET 0x5A
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#define PART1OFFSET 0x04
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#define PART2OFFSET 0x10
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#define PART3OFFSET 0x12
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#define PART4OFFSET 0x14
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#define PART5OFFSET 0x16
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#define CAPTUREOFFSET 0x00
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#define VIDEOOFFSET 0x02
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#define COLREGOFFSET 0x48
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#define PELMASKOFFSET 0x46
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#define VGAENABLE 0x43
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#define SISAR SISUSB_PCI_IOPORTBASE + AROFFSET
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#define SISARR SISUSB_PCI_IOPORTBASE + ARROFFSET
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#define SISGR SISUSB_PCI_IOPORTBASE + GROFFSET
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#define SISSR SISUSB_PCI_IOPORTBASE + SROFFSET
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#define SISCR SISUSB_PCI_IOPORTBASE + CROFFSET
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#define SISMISCR SISUSB_PCI_IOPORTBASE + MISCROFFSET
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#define SISMISCW SISUSB_PCI_IOPORTBASE + MISCWOFFSET
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#define SISINPSTAT SISUSB_PCI_IOPORTBASE + INPUTSTATOFFSET
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#define SISPART1 SISUSB_PCI_IOPORTBASE + PART1OFFSET
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#define SISPART2 SISUSB_PCI_IOPORTBASE + PART2OFFSET
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#define SISPART3 SISUSB_PCI_IOPORTBASE + PART3OFFSET
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#define SISPART4 SISUSB_PCI_IOPORTBASE + PART4OFFSET
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#define SISPART5 SISUSB_PCI_IOPORTBASE + PART5OFFSET
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#define SISCAP SISUSB_PCI_IOPORTBASE + CAPTUREOFFSET
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#define SISVID SISUSB_PCI_IOPORTBASE + VIDEOOFFSET
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#define SISCOLIDXR SISUSB_PCI_IOPORTBASE + COLREGOFFSET - 1
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#define SISCOLIDX SISUSB_PCI_IOPORTBASE + COLREGOFFSET
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#define SISCOLDATA SISUSB_PCI_IOPORTBASE + COLREGOFFSET + 1
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#define SISCOL2IDX SISPART5
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#define SISCOL2DATA SISPART5 + 1
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#define SISPEL SISUSB_PCI_IOPORTBASE + PELMASKOFFSET
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#define SISVGAEN SISUSB_PCI_IOPORTBASE + VGAENABLE
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#define SISDACA SISCOLIDX
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#define SISDACD SISCOLDATA
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/* ioctl related */
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/* Structure argument for SISUSB_GET_INFO ioctl */
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struct sisusb_info {
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__u32 sisusb_id; /* for identifying sisusb */
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#define SISUSB_ID 0x53495355 /* Identify myself with 'SISU' */
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__u8 sisusb_version;
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__u8 sisusb_revision;
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__u8 sisusb_patchlevel;
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__u8 sisusb_gfxinit; /* graphics core initialized? */
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__u32 sisusb_vrambase;
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__u32 sisusb_mmiobase;
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__u32 sisusb_iobase;
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__u32 sisusb_pcibase;
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__u32 sisusb_vramsize; /* framebuffer size in bytes */
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__u32 sisusb_minor;
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__u32 sisusb_fbdevactive; /* != 0 if framebuffer device active */
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__u32 sisusb_conactive; /* != 0 if console driver active */
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__u8 sisusb_reserved[28]; /* for future use */
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};
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struct sisusb_command {
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__u8 operation; /* see below */
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__u8 data0; /* operation dependent */
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__u8 data1; /* operation dependent */
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__u8 data2; /* operation dependent */
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__u32 data3; /* operation dependent */
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__u32 data4; /* for future use */
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};
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#define SUCMD_GET 0x01 /* for all: data0 = index, data3 = port */
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#define SUCMD_SET 0x02 /* data1 = value */
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#define SUCMD_SETOR 0x03 /* data1 = or */
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#define SUCMD_SETAND 0x04 /* data1 = and */
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#define SUCMD_SETANDOR 0x05 /* data1 = and, data2 = or */
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#define SUCMD_SETMASK 0x06 /* data1 = data, data2 = mask */
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#define SUCMD_CLRSCR 0x07 /* data0:1:2 = length, data3 = address */
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#define SUCMD_HANDLETEXTMODE 0x08 /* Reset/destroy text mode */
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#define SUCMD_SETMODE 0x09 /* Set a display mode (data3 = SiS mode) */
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#define SUCMD_SETVESAMODE 0x0a /* Set a display mode (data3 = VESA mode) */
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#define SISUSB_COMMAND _IOWR(0xF3,0x3D,struct sisusb_command)
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#define SISUSB_GET_CONFIG_SIZE _IOR(0xF3,0x3E,__u32)
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#define SISUSB_GET_CONFIG _IOR(0xF3,0x3F,struct sisusb_info)
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#endif /* SISUSB_H */
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