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/module.h>
  33 #include <linux/platform_device.h>
  34
  35 #include "mga_drv.h"
  36
  37 #define FIRMWARE_G200 "matrox/g200_warp.fw"
  38 #define FIRMWARE_G400 "matrox/g400_warp.fw"
  39
  40 MODULE_FIRMWARE(FIRMWARE_G200);
  41 MODULE_FIRMWARE(FIRMWARE_G400);
  42
  43 #define MGA_WARP_CODE_ALIGN             256     /* in bytes */
  44
  45 #define WARP_UCODE_SIZE(size)           ALIGN(size, MGA_WARP_CODE_ALIGN)
  46
  47 int mga_warp_install_microcode(drm_mga_private_t *dev_priv)
  48 {
  49         unsigned char *vcbase = dev_priv->warp->handle;
  50         unsigned long pcbase = dev_priv->warp->offset;
  51         const char *firmware_name;
  52         struct platform_device *pdev;
  53         const struct firmware *fw = NULL;
  54         const struct ihex_binrec *rec;
  55         unsigned int size;
  56         int n_pipes, where;
  57         int rc = 0;
  58
  59         switch (dev_priv->chipset) {
  60         case MGA_CARD_TYPE_G400:
  61         case MGA_CARD_TYPE_G550:
  62                 firmware_name = FIRMWARE_G400;
  63                 n_pipes = MGA_MAX_G400_PIPES;
  64                 break;
  65         case MGA_CARD_TYPE_G200:
  66                 firmware_name = FIRMWARE_G200;
  67                 n_pipes = MGA_MAX_G200_PIPES;
  68                 break;
  69         default:
  70                 return -EINVAL;
  71         }
  72
  73         pdev = platform_device_register_simple("mga_warp", 0, NULL, 0);
  74         if (IS_ERR(pdev)) {
  75                 DRM_ERROR("mga: Failed to register microcode\n");
  76                 return PTR_ERR(pdev);
  77         }
  78         rc = request_ihex_firmware(&fw, firmware_name, &pdev->dev);
  79         platform_device_unregister(pdev);
  80         if (rc) {
  81                 DRM_ERROR("mga: Failed to load microcode \"%s\"\n",
  82                           firmware_name);
  83                 return rc;
  84         }
  85
  86         size = 0;
  87         where = 0;
  88         for (rec = (const struct ihex_binrec *)fw->data;
  89              rec;
  90              rec = ihex_next_binrec(rec)) {
  91                 size += WARP_UCODE_SIZE(be16_to_cpu(rec->len));
  92                 where++;
  93         }
  94
  95         if (where != n_pipes) {
  96                 DRM_ERROR("mga: Invalid microcode \"%s\"\n", firmware_name);
  97                 rc = -EINVAL;
  98                 goto out;
  99         }
 100         size = PAGE_ALIGN(size);
 101         DRM_DEBUG("MGA ucode size = %d bytes\n", size);
 102         if (size > dev_priv->warp->size) {
 103                 DRM_ERROR("microcode too large! (%u > %lu)\n",
 104                           size, dev_priv->warp->size);
 105                 rc = -ENOMEM;
 106                 goto out;
 107         }
 108
 109         memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys));
 110
 111         where = 0;
 112         for (rec = (const struct ihex_binrec *)fw->data;
 113              rec;
 114              rec = ihex_next_binrec(rec)) {
 115                 unsigned int src_size, dst_size;
 116
 117                 DRM_DEBUG(" pcbase = 0x%08lx  vcbase = %p\n", pcbase, vcbase);
 118                 dev_priv->warp_pipe_phys[where] = pcbase;
 119                 src_size = be16_to_cpu(rec->len);
 120                 dst_size = WARP_UCODE_SIZE(src_size);
 121                 memcpy(vcbase, rec->data, src_size);
 122                 pcbase += dst_size;
 123                 vcbase += dst_size;
 124                 where++;
 125         }
 126
 127 out:
 128         release_firmware(fw);
 129         return rc;
 130 }
 131
 132 #define WMISC_EXPECTED          (MGA_WUCODECACHE_ENABLE | MGA_WMASTER_ENABLE)
 133
 134 int mga_warp_init(drm_mga_private_t *dev_priv)
 135 {
 136         u32 wmisc;
 137
 138         /* FIXME: Get rid of these damned magic numbers...
 139          */
 140         switch (dev_priv->chipset) {
 141         case MGA_CARD_TYPE_G400:
 142         case MGA_CARD_TYPE_G550:
 143                 MGA_WRITE(MGA_WIADDR2, MGA_WMODE_SUSPEND);
 144                 MGA_WRITE(MGA_WGETMSB, 0x00000E00);
 145                 MGA_WRITE(MGA_WVRTXSZ, 0x00001807);
 146                 MGA_WRITE(MGA_WACCEPTSEQ, 0x18000000);
 147                 break;
 148         case MGA_CARD_TYPE_G200:
 149                 MGA_WRITE(MGA_WIADDR, MGA_WMODE_SUSPEND);
 150                 MGA_WRITE(MGA_WGETMSB, 0x1606);
 151                 MGA_WRITE(MGA_WVRTXSZ, 7);
 152                 break;
 153         default:
 154                 return -EINVAL;
 155         }
 156
 157         MGA_WRITE(MGA_WMISC, (MGA_WUCODECACHE_ENABLE |
 158                               MGA_WMASTER_ENABLE | MGA_WCACHEFLUSH_ENABLE));
 159         wmisc = MGA_READ(MGA_WMISC);
 160         if (wmisc != WMISC_EXPECTED) {
 161                 DRM_ERROR("WARP engine config failed! 0x%x != 0x%x\n",
 162                           wmisc, WMISC_EXPECTED);
 163                 return -EINVAL;
 164         }
 165
 166         return 0;
 167 }