linux/drivers/gpu/drm/mga/mga_warp.c
<<
>>
Prefs
   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
  40MODULE_FIRMWARE(FIRMWARE_G200);
  41MODULE_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
  47int 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
 127out:
 128        release_firmware(fw);
 129        return rc;
 130}
 131
 132#define WMISC_EXPECTED          (MGA_WUCODECACHE_ENABLE | MGA_WMASTER_ENABLE)
 133
 134int 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}
 168