drivers/usb/misc/sisusbvga/sisusb.h

   1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
   2 /*
   3  * sisusb - usb kernel driver for Net2280/SiS315 based USB2VGA dongles
   4  *
   5  * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
   6  *
   7  * If distributed as part of the Linux kernel, this code is licensed under the
   8  * terms of the GPL v2.
   9  *
  10  * Otherwise, the following license terms apply:
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1) Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2) Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3) The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * Author:      Thomas Winischhofer <thomas@winischhofer.net>
  35  *
  36  */
  37
  38 #ifndef _SISUSB_H_
  39 #define _SISUSB_H_
  40
  41 #include <linux/mutex.h>
  42
  43 /* Version Information */
  44
  45 #define SISUSB_VERSION          0
  46 #define SISUSB_REVISION         0
  47 #define SISUSB_PATCHLEVEL       8
  48
  49 /* Include console and mode switching code? */
  50
  51 #include <linux/console.h>
  52 #include <linux/vt_kern.h>
  53 #include "sisusb_struct.h"
  54
  55 /* USB related */
  56
  57 #define SISUSB_MINOR            133     /* official */
  58
  59 /* Size of the sisusb input/output buffers */
  60 #define SISUSB_IBUF_SIZE  0x01000
  61 #define SISUSB_OBUF_SIZE  0x10000       /* fixed */
  62
  63 #define NUMOBUFS 8              /* max number of output buffers/output URBs */
  64
  65 /* About endianness:
  66  *
  67  * 1) I/O ports, PCI config registers. The read/write()
  68  *    calls emulate inX/outX. Hence, the data is
  69  *    expected/delivered in machine endiannes by this
  70  *    driver.
  71  * 2) Video memory. The data is copied 1:1. There is
  72  *    no swapping. Ever. This means for userland that
  73  *    the data has to be prepared properly. (Hint:
  74  *    think graphics data format, command queue,
  75  *    hardware cursor.)
  76  * 3) MMIO. Data is copied 1:1. MMIO must be swapped
  77  *    properly by userland.
  78  *
  79  */
  80
  81 #ifdef __BIG_ENDIAN
  82 #define SISUSB_CORRECT_ENDIANNESS_PACKET(p)             \
  83         do {                                            \
  84                 p->header  = cpu_to_le16(p->header);    \
  85                 p->address = cpu_to_le32(p->address);   \
  86                 p->data    = cpu_to_le32(p->data);      \
  87         } while(0)
  88 #else
  89 #define SISUSB_CORRECT_ENDIANNESS_PACKET(p)
  90 #endif
  91
  92 struct sisusb_usb_data;
  93
  94 struct sisusb_urb_context {     /* urb->context for outbound bulk URBs */
  95         struct sisusb_usb_data *sisusb;
  96         int urbindex;
  97         int *actual_length;
  98 };
  99
 100 struct sisusb_usb_data {
 101         struct usb_device *sisusb_dev;
 102         struct usb_interface *interface;
 103         struct kref kref;
 104         wait_queue_head_t wait_q;       /* for syncind and timeouts */
 105         struct mutex lock;      /* general race avoidance */
 106         unsigned int ifnum;     /* interface number of the USB device */
 107         int minor;              /* minor (for logging clarity) */
 108         int isopen;             /* !=0 if open */
 109         int present;            /* !=0 if device is present on the bus */
 110         int ready;              /* !=0 if device is ready for userland */
 111         int numobufs;           /* number of obufs = number of out urbs */
 112         char *obuf[NUMOBUFS], *ibuf;    /* transfer buffers */
 113         int obufsize, ibufsize;
 114         struct urb *sisurbout[NUMOBUFS];
 115         struct urb *sisurbin;
 116         unsigned char urbstatus[NUMOBUFS];
 117         unsigned char completein;
 118         struct sisusb_urb_context urbout_context[NUMOBUFS];
 119         unsigned long flagb0;
 120         unsigned long vrambase; /* framebuffer base */
 121         unsigned int vramsize;  /* framebuffer size (bytes) */
 122         unsigned long mmiobase;
 123         unsigned int mmiosize;
 124         unsigned long ioportbase;
 125         unsigned char devinit;  /* device initialized? */
 126         unsigned char gfxinit;  /* graphics core initialized? */
 127         unsigned short chipid, chipvendor;
 128         unsigned short chiprevision;
 129 #ifdef CONFIG_USB_SISUSBVGA_CON
 130         struct SiS_Private *SiS_Pr;
 131         unsigned long scrbuf;
 132         unsigned int scrbuf_size;
 133         int haveconsole, con_first, con_last;
 134         int havethisconsole[MAX_NR_CONSOLES];
 135         int textmodedestroyed;
 136         unsigned int sisusb_num_columns;        /* real number, not vt's idea */
 137         int cur_start_addr, con_rolled_over;
 138         int sisusb_cursor_loc, bad_cursor_pos;
 139         int sisusb_cursor_size_from;
 140         int sisusb_cursor_size_to;
 141         int current_font_height, current_font_512;
 142         int font_backup_size, font_backup_height, font_backup_512;
 143         char *font_backup;
 144         int font_slot;
 145         struct vc_data *sisusb_display_fg;
 146         int is_gfx;
 147         int con_blanked;
 148 #endif
 149 };
 150
 151 #define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)
 152
 153 /* USB transport related */
 154
 155 /* urbstatus */
 156 #define SU_URB_BUSY   1
 157 #define SU_URB_ALLOC  2
 158
 159 /* Endpoints */
 160
 161 #define SISUSB_EP_GFX_IN        0x0e    /* gfx std packet out(0e)/in(8e) */
 162 #define SISUSB_EP_GFX_OUT       0x0e
 163
 164 #define SISUSB_EP_GFX_BULK_OUT  0x01    /* gfx mem bulk out/in */
 165 #define SISUSB_EP_GFX_BULK_IN   0x02    /* ? 2 is "OUT" ? */
 166
 167 #define SISUSB_EP_GFX_LBULK_OUT 0x03    /* gfx large mem bulk out */
 168
 169 #define SISUSB_EP_UNKNOWN_04    0x04    /* ? 4 is "OUT" ? - unused */
 170
 171 #define SISUSB_EP_BRIDGE_IN     0x0d    /* Net2280 out(0d)/in(8d) */
 172 #define SISUSB_EP_BRIDGE_OUT    0x0d
 173
 174 #define SISUSB_TYPE_MEM         0
 175 #define SISUSB_TYPE_IO          1
 176
 177 struct sisusb_packet {
 178         unsigned short header;
 179         u32 address;
 180         u32 data;
 181 } __attribute__ ((__packed__));
 182
 183 #define CLEARPACKET(packet) memset(packet, 0, 10)
 184
 185 /* PCI bridge related */
 186
 187 #define SISUSB_PCI_MEMBASE      0xd0000000
 188 #define SISUSB_PCI_MMIOBASE     0xe4000000
 189 #define SISUSB_PCI_IOPORTBASE   0x0000d000
 190
 191 #define SISUSB_PCI_PSEUDO_MEMBASE       0x10000000
 192 #define SISUSB_PCI_PSEUDO_MMIOBASE      0x20000000
 193 #define SISUSB_PCI_PSEUDO_IOPORTBASE    0x0000d000
 194 #define SISUSB_PCI_PSEUDO_PCIBASE       0x00010000
 195
 196 #define SISUSB_PCI_MMIOSIZE     (128*1024)
 197 #define SISUSB_PCI_PCONFSIZE    0x5c
 198
 199 /* graphics core related */
 200
 201 #define AROFFSET        0x40
 202 #define ARROFFSET       0x41
 203 #define GROFFSET        0x4e
 204 #define SROFFSET        0x44
 205 #define CROFFSET        0x54
 206 #define MISCROFFSET     0x4c
 207 #define MISCWOFFSET     0x42
 208 #define INPUTSTATOFFSET 0x5A
 209 #define PART1OFFSET     0x04
 210 #define PART2OFFSET     0x10
 211 #define PART3OFFSET     0x12
 212 #define PART4OFFSET     0x14
 213 #define PART5OFFSET     0x16
 214 #define CAPTUREOFFSET   0x00
 215 #define VIDEOOFFSET     0x02
 216 #define COLREGOFFSET    0x48
 217 #define PELMASKOFFSET   0x46
 218 #define VGAENABLE       0x43
 219
 220 #define SISAR           SISUSB_PCI_IOPORTBASE + AROFFSET
 221 #define SISARR          SISUSB_PCI_IOPORTBASE + ARROFFSET
 222 #define SISGR           SISUSB_PCI_IOPORTBASE + GROFFSET
 223 #define SISSR           SISUSB_PCI_IOPORTBASE + SROFFSET
 224 #define SISCR           SISUSB_PCI_IOPORTBASE + CROFFSET
 225 #define SISMISCR        SISUSB_PCI_IOPORTBASE + MISCROFFSET
 226 #define SISMISCW        SISUSB_PCI_IOPORTBASE + MISCWOFFSET
 227 #define SISINPSTAT      SISUSB_PCI_IOPORTBASE + INPUTSTATOFFSET
 228 #define SISPART1        SISUSB_PCI_IOPORTBASE + PART1OFFSET
 229 #define SISPART2        SISUSB_PCI_IOPORTBASE + PART2OFFSET
 230 #define SISPART3        SISUSB_PCI_IOPORTBASE + PART3OFFSET
 231 #define SISPART4        SISUSB_PCI_IOPORTBASE + PART4OFFSET
 232 #define SISPART5        SISUSB_PCI_IOPORTBASE + PART5OFFSET
 233 #define SISCAP          SISUSB_PCI_IOPORTBASE + CAPTUREOFFSET
 234 #define SISVID          SISUSB_PCI_IOPORTBASE + VIDEOOFFSET
 235 #define SISCOLIDXR      SISUSB_PCI_IOPORTBASE + COLREGOFFSET - 1
 236 #define SISCOLIDX       SISUSB_PCI_IOPORTBASE + COLREGOFFSET
 237 #define SISCOLDATA      SISUSB_PCI_IOPORTBASE + COLREGOFFSET + 1
 238 #define SISCOL2IDX      SISPART5
 239 #define SISCOL2DATA     SISPART5 + 1
 240 #define SISPEL          SISUSB_PCI_IOPORTBASE + PELMASKOFFSET
 241 #define SISVGAEN        SISUSB_PCI_IOPORTBASE + VGAENABLE
 242 #define SISDACA         SISCOLIDX
 243 #define SISDACD         SISCOLDATA
 244
 245 /* ioctl related */
 246
 247 /* Structure argument for SISUSB_GET_INFO ioctl  */
 248 struct sisusb_info {
 249         __u32 sisusb_id;        /* for identifying sisusb */
 250 #define SISUSB_ID  0x53495355   /* Identify myself with 'SISU' */
 251         __u8 sisusb_version;
 252         __u8 sisusb_revision;
 253         __u8 sisusb_patchlevel;
 254         __u8 sisusb_gfxinit;    /* graphics core initialized? */
 255
 256         __u32 sisusb_vrambase;
 257         __u32 sisusb_mmiobase;
 258         __u32 sisusb_iobase;
 259         __u32 sisusb_pcibase;
 260
 261         __u32 sisusb_vramsize;  /* framebuffer size in bytes */
 262
 263         __u32 sisusb_minor;
 264
 265         __u32 sisusb_fbdevactive;       /* != 0 if framebuffer device active */
 266
 267         __u32 sisusb_conactive; /* != 0 if console driver active */
 268
 269         __u8 sisusb_reserved[28];       /* for future use */
 270 };
 271
 272 struct sisusb_command {
 273         __u8 operation;         /* see below */
 274         __u8 data0;             /* operation dependent */
 275         __u8 data1;             /* operation dependent */
 276         __u8 data2;             /* operation dependent */
 277         __u32 data3;            /* operation dependent */
 278         __u32 data4;            /* for future use */
 279 };
 280
 281 #define SUCMD_GET       0x01    /* for all: data0 = index, data3 = port */
 282 #define SUCMD_SET       0x02    /* data1 = value */
 283 #define SUCMD_SETOR     0x03    /* data1 = or */
 284 #define SUCMD_SETAND    0x04    /* data1 = and */
 285 #define SUCMD_SETANDOR  0x05    /* data1 = and, data2 = or */
 286 #define SUCMD_SETMASK   0x06    /* data1 = data, data2 = mask */
 287
 288 #define SUCMD_CLRSCR    0x07    /* data0:1:2 = length, data3 = address */
 289
 290 #define SUCMD_HANDLETEXTMODE 0x08       /* Reset/destroy text mode */
 291
 292 #define SUCMD_SETMODE   0x09    /* Set a display mode (data3 = SiS mode) */
 293 #define SUCMD_SETVESAMODE 0x0a  /* Set a display mode (data3 = VESA mode) */
 294
 295 #define SISUSB_COMMAND          _IOWR(0xF3,0x3D,struct sisusb_command)
 296 #define SISUSB_GET_CONFIG_SIZE  _IOR(0xF3,0x3E,__u32)
 297 #define SISUSB_GET_CONFIG       _IOR(0xF3,0x3F,struct sisusb_info)
 298
 299 #endif /* SISUSB_H */