drivers/gpu/drm/mga/mga_warp.c

   1 /* mga_warp.c -- Matrox G200/G400 WARP engine management -*- linux-c -*-
   2  * Created: Thu Jan 11 21:29:32 2001 by gareth@valinux.com
   3  *
   4  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Gareth Hughes <gareth@valinux.com>
  28  */
  29
  30 #include <linux/firmware.h>
  31 #include <linux/ihex.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/module.h>
  34
  35 #include "drmP.h"
  36 #include "drm.h"
  37 #include "mga_drm.h"
  38 #include "mga_drv.h"
  39
  40 #define FIRMWARE_G200 "matrox/g200_warp.fw"
  41 #define FIRMWARE_G400 "matrox/g400_warp.fw"
  42
  43 MODULE_FIRMWARE(FIRMWARE_G200);
  44 MODULE_FIRMWARE(FIRMWARE_G400);
  45
  46 #define MGA_WARP_CODE_ALIGN             256     /* in bytes */
  47
  48 #define WARP_UCODE_SIZE(size)           ALIGN(size, MGA_WARP_CODE_ALIGN)
  49
  50 int mga_warp_install_microcode(drm_mga_private_t *dev_priv)
  51 {
  52         unsigned char *vcbase = dev_priv->warp->handle;
  53         unsigned long pcbase = dev_priv->warp->offset;
  54         const char *firmware_name;
  55         struct platform_device *pdev;
  56         const struct firmware *fw = NULL;
  57         const struct ihex_binrec *rec;
  58         unsigned int size;
  59         int n_pipes, where;
  60         int rc = 0;
  61
  62         switch (dev_priv->chipset) {
  63         case MGA_CARD_TYPE_G400:
  64         case MGA_CARD_TYPE_G550:
  65                 firmware_name = FIRMWARE_G400;
  66                 n_pipes = MGA_MAX_G400_PIPES;
  67                 break;
  68         case MGA_CARD_TYPE_G200:
  69                 firmware_name = FIRMWARE_G200;
  70                 n_pipes = MGA_MAX_G200_PIPES;
  71                 break;
  72         default:
  73                 return -EINVAL;
  74         }
  75
  76         pdev = platform_device_register_simple("mga_warp", 0, NULL, 0);
  77         if (IS_ERR(pdev)) {
  78                 DRM_ERROR("mga: Failed to register microcode\n");
  79                 return PTR_ERR(pdev);
  80         }
  81         rc = request_ihex_firmware(&fw, firmware_name, &pdev->dev);
  82         platform_device_unregister(pdev);
  83         if (rc) {
  84                 DRM_ERROR("mga: Failed to load microcode \"%s\"\n",
  85                           firmware_name);
  86                 return rc;
  87         }
  88
  89         size = 0;
  90         where = 0;
  91         for (rec = (const struct ihex_binrec *)fw->data;
  92              rec;
  93              rec = ihex_next_binrec(rec)) {
  94                 size += WARP_UCODE_SIZE(be16_to_cpu(rec->len));
  95                 where++;
  96         }
  97
  98         if (where != n_pipes) {
  99                 DRM_ERROR("mga: Invalid microcode \"%s\"\n", firmware_name);
 100                 rc = -EINVAL;
 101                 goto out;
 102         }
 103         size = PAGE_ALIGN(size);
 104         DRM_DEBUG("MGA ucode size = %d bytes\n", size);
 105         if (size > dev_priv->warp->size) {
 106                 DRM_ERROR("microcode too large! (%u > %lu)\n",
 107                           size, dev_priv->warp->size);
 108                 rc = -ENOMEM;
 109                 goto out;
 110         }
 111
 112         memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys));
 113
 114         where = 0;
 115         for (rec = (const struct ihex_binrec *)fw->data;
 116              rec;
 117              rec = ihex_next_binrec(rec)) {
 118                 unsigned int src_size, dst_size;
 119
 120                 DRM_DEBUG(" pcbase = 0x%08lx  vcbase = %p\n", pcbase, vcbase);
 121                 dev_priv->warp_pipe_phys[where] = pcbase;
 122                 src_size = be16_to_cpu(rec->len);
 123                 dst_size = WARP_UCODE_SIZE(src_size);
 124                 memcpy(vcbase, rec->data, src_size);
 125                 pcbase += dst_size;
 126                 vcbase += dst_size;
 127                 where++;
 128         }
 129
 130 out:
 131         release_firmware(fw);
 132         return rc;
 133 }
 134
 135 #define WMISC_EXPECTED          (MGA_WUCODECACHE_ENABLE | MGA_WMASTER_ENABLE)
 136
 137 int mga_warp_init(drm_mga_private_t *dev_priv)
 138 {
 139         u32 wmisc;
 140
 141         /* FIXME: Get rid of these damned magic numbers...
 142          */
 143         switch (dev_priv->chipset) {
 144         case MGA_CARD_TYPE_G400:
 145         case MGA_CARD_TYPE_G550:
 146                 MGA_WRITE(MGA_WIADDR2, MGA_WMODE_SUSPEND);
 147                 MGA_WRITE(MGA_WGETMSB, 0x00000E00);
 148                 MGA_WRITE(MGA_WVRTXSZ, 0x00001807);
 149                 MGA_WRITE(MGA_WACCEPTSEQ, 0x18000000);
 150                 break;
 151         case MGA_CARD_TYPE_G200:
 152                 MGA_WRITE(MGA_WIADDR, MGA_WMODE_SUSPEND);
 153                 MGA_WRITE(MGA_WGETMSB, 0x1606);
 154                 MGA_WRITE(MGA_WVRTXSZ, 7);
 155                 break;
 156         default:
 157                 return -EINVAL;
 158         }
 159
 160         MGA_WRITE(MGA_WMISC, (MGA_WUCODECACHE_ENABLE |
 161                               MGA_WMASTER_ENABLE | MGA_WCACHEFLUSH_ENABLE));
 162         wmisc = MGA_READ(MGA_WMISC);
 163         if (wmisc != WMISC_EXPECTED) {
 164                 DRM_ERROR("WARP engine config failed! 0x%x != 0x%x\n",
 165                           wmisc, WMISC_EXPECTED);
 166                 return -EINVAL;
 167         }
 168
 169         return 0;
 170 }