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 <drm/drmP.h>
  36 #include <drm/mga_drm.h>
  37 #include "mga_drv.h"
  38
  39 #define FIRMWARE_G200 "matrox/g200_warp.fw"
  40 #define FIRMWARE_G400 "matrox/g400_warp.fw"
  41
  42 MODULE_FIRMWARE(FIRMWARE_G200);
  43 MODULE_FIRMWARE(FIRMWARE_G400);
  44
  45 #define MGA_WARP_CODE_ALIGN             256     /* in bytes */
  46
  47 #define WARP_UCODE_SIZE(size)           ALIGN(size, MGA_WARP_CODE_ALIGN)
  48
  49 int mga_warp_install_microcode(drm_mga_private_t *dev_priv)
  50 {
  51         unsigned char *vcbase = dev_priv->warp->handle;
  52         unsigned long pcbase = dev_priv->warp->offset;
  53         const char *firmware_name;
  54         struct platform_device *pdev;
  55         const struct firmware *fw = NULL;
  56         const struct ihex_binrec *rec;
  57         unsigned int size;
  58         int n_pipes, where;
  59         int rc = 0;
  60
  61         switch (dev_priv->chipset) {
  62         case MGA_CARD_TYPE_G400:
  63         case MGA_CARD_TYPE_G550:
  64                 firmware_name = FIRMWARE_G400;
  65                 n_pipes = MGA_MAX_G400_PIPES;
  66                 break;
  67         case MGA_CARD_TYPE_G200:
  68                 firmware_name = FIRMWARE_G200;
  69                 n_pipes = MGA_MAX_G200_PIPES;
  70                 break;
  71         default:
  72                 return -EINVAL;
  73         }
  74
  75         pdev = platform_device_register_simple("mga_warp", 0, NULL, 0);
  76         if (IS_ERR(pdev)) {
  77                 DRM_ERROR("mga: Failed to register microcode\n");
  78                 return PTR_ERR(pdev);
  79         }
  80         rc = request_ihex_firmware(&fw, firmware_name, &pdev->dev);
  81         platform_device_unregister(pdev);
  82         if (rc) {
  83                 DRM_ERROR("mga: Failed to load microcode \"%s\"\n",
  84                           firmware_name);
  85                 return rc;
  86         }
  87
  88         size = 0;
  89         where = 0;
  90         for (rec = (const struct ihex_binrec *)fw->data;
  91              rec;
  92              rec = ihex_next_binrec(rec)) {
  93                 size += WARP_UCODE_SIZE(be16_to_cpu(rec->len));
  94                 where++;
  95         }
  96
  97         if (where != n_pipes) {
  98                 DRM_ERROR("mga: Invalid microcode \"%s\"\n", firmware_name);
  99                 rc = -EINVAL;
 100                 goto out;
 101         }
 102         size = PAGE_ALIGN(size);
 103         DRM_DEBUG("MGA ucode size = %d bytes\n", size);
 104         if (size > dev_priv->warp->size) {
 105                 DRM_ERROR("microcode too large! (%u > %lu)\n",
 106                           size, dev_priv->warp->size);
 107                 rc = -ENOMEM;
 108                 goto out;
 109         }
 110
 111         memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys));
 112
 113         where = 0;
 114         for (rec = (const struct ihex_binrec *)fw->data;
 115              rec;
 116              rec = ihex_next_binrec(rec)) {
 117                 unsigned int src_size, dst_size;
 118
 119                 DRM_DEBUG(" pcbase = 0x%08lx  vcbase = %p\n", pcbase, vcbase);
 120                 dev_priv->warp_pipe_phys[where] = pcbase;
 121                 src_size = be16_to_cpu(rec->len);
 122                 dst_size = WARP_UCODE_SIZE(src_size);
 123                 memcpy(vcbase, rec->data, src_size);
 124                 pcbase += dst_size;
 125                 vcbase += dst_size;
 126                 where++;
 127         }
 128
 129 out:
 130         release_firmware(fw);
 131         return rc;
 132 }
 133
 134 #define WMISC_EXPECTED          (MGA_WUCODECACHE_ENABLE | MGA_WMASTER_ENABLE)
 135
 136 int mga_warp_init(drm_mga_private_t *dev_priv)
 137 {
 138         u32 wmisc;
 139
 140         /* FIXME: Get rid of these damned magic numbers...
 141          */
 142         switch (dev_priv->chipset) {
 143         case MGA_CARD_TYPE_G400:
 144         case MGA_CARD_TYPE_G550:
 145                 MGA_WRITE(MGA_WIADDR2, MGA_WMODE_SUSPEND);
 146                 MGA_WRITE(MGA_WGETMSB, 0x00000E00);
 147                 MGA_WRITE(MGA_WVRTXSZ, 0x00001807);
 148                 MGA_WRITE(MGA_WACCEPTSEQ, 0x18000000);
 149                 break;
 150         case MGA_CARD_TYPE_G200:
 151                 MGA_WRITE(MGA_WIADDR, MGA_WMODE_SUSPEND);
 152                 MGA_WRITE(MGA_WGETMSB, 0x1606);
 153                 MGA_WRITE(MGA_WVRTXSZ, 7);
 154                 break;
 155         default:
 156                 return -EINVAL;
 157         }
 158
 159         MGA_WRITE(MGA_WMISC, (MGA_WUCODECACHE_ENABLE |
 160                               MGA_WMASTER_ENABLE | MGA_WCACHEFLUSH_ENABLE));
 161         wmisc = MGA_READ(MGA_WMISC);
 162         if (wmisc != WMISC_EXPECTED) {
 163                 DRM_ERROR("WARP engine config failed! 0x%x != 0x%x\n",
 164                           wmisc, WMISC_EXPECTED);
 165                 return -EINVAL;
 166         }
 167
 168         return 0;
 169 }