SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/gpu/drm/nouveau/nouveau_grctx.c

   1 /*
   2  * Copyright 2009 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #include <linux/firmware.h>
  26
  27 #include "drmP.h"
  28 #include "nouveau_drv.h"
  29
  30 struct nouveau_ctxprog {
  31         uint32_t signature;
  32         uint8_t  version;
  33         uint16_t length;
  34         uint32_t data[];
  35 } __attribute__ ((packed));
  36
  37 struct nouveau_ctxvals {
  38         uint32_t signature;
  39         uint8_t  version;
  40         uint32_t length;
  41         struct {
  42                 uint32_t offset;
  43                 uint32_t value;
  44         } data[];
  45 } __attribute__ ((packed));
  46
  47 int
  48 nouveau_grctx_prog_load(struct drm_device *dev)
  49 {
  50         struct drm_nouveau_private *dev_priv = dev->dev_private;
  51         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
  52         const int chipset = dev_priv->chipset;
  53         const struct firmware *fw;
  54         const struct nouveau_ctxprog *cp;
  55         const struct nouveau_ctxvals *cv;
  56         char name[32];
  57         int ret, i;
  58
  59         if (!pgraph->ctxprog) {
  60                 sprintf(name, "nouveau/nv%02x.ctxprog", chipset);
  61                 ret = request_firmware(&fw, name, &dev->pdev->dev);
  62                 if (ret) {
  63                         NV_ERROR(dev, "No ctxprog for NV%02x\n", chipset);
  64                         return ret;
  65                 }
  66
  67                 pgraph->ctxprog = kmalloc(fw->size, GFP_KERNEL);
  68                 if (!pgraph->ctxprog) {
  69                         NV_ERROR(dev, "OOM copying ctxprog\n");
  70                         release_firmware(fw);
  71                         return -ENOMEM;
  72                 }
  73                 memcpy(pgraph->ctxprog, fw->data, fw->size);
  74
  75                 cp = pgraph->ctxprog;
  76                 if (le32_to_cpu(cp->signature) != 0x5043564e ||
  77                     cp->version != 0 ||
  78                     le16_to_cpu(cp->length) != ((fw->size - 7) / 4)) {
  79                         NV_ERROR(dev, "ctxprog invalid\n");
  80                         release_firmware(fw);
  81                         nouveau_grctx_fini(dev);
  82                         return -EINVAL;
  83                 }
  84                 release_firmware(fw);
  85         }
  86
  87         if (!pgraph->ctxvals) {
  88                 sprintf(name, "nouveau/nv%02x.ctxvals", chipset);
  89                 ret = request_firmware(&fw, name, &dev->pdev->dev);
  90                 if (ret) {
  91                         NV_ERROR(dev, "No ctxvals for NV%02x\n", chipset);
  92                         nouveau_grctx_fini(dev);
  93                         return ret;
  94                 }
  95
  96                 pgraph->ctxvals = kmalloc(fw->size, GFP_KERNEL);
  97                 if (!pgraph->ctxprog) {
  98                         NV_ERROR(dev, "OOM copying ctxprog\n");
  99                         release_firmware(fw);
 100                         nouveau_grctx_fini(dev);
 101                         return -ENOMEM;
 102                 }
 103                 memcpy(pgraph->ctxvals, fw->data, fw->size);
 104
 105                 cv = (void *)pgraph->ctxvals;
 106                 if (le32_to_cpu(cv->signature) != 0x5643564e ||
 107                     cv->version != 0 ||
 108                     le32_to_cpu(cv->length) != ((fw->size - 9) / 8)) {
 109                         NV_ERROR(dev, "ctxvals invalid\n");
 110                         release_firmware(fw);
 111                         nouveau_grctx_fini(dev);
 112                         return -EINVAL;
 113                 }
 114                 release_firmware(fw);
 115         }
 116
 117         cp = pgraph->ctxprog;
 118
 119         nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
 120         for (i = 0; i < le16_to_cpu(cp->length); i++)
 121                 nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA,
 122                         le32_to_cpu(cp->data[i]));
 123
 124         return 0;
 125 }
 126
 127 void
 128 nouveau_grctx_fini(struct drm_device *dev)
 129 {
 130         struct drm_nouveau_private *dev_priv = dev->dev_private;
 131         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 132
 133         if (pgraph->ctxprog) {
 134                 kfree(pgraph->ctxprog);
 135                 pgraph->ctxprog = NULL;
 136         }
 137
 138         if (pgraph->ctxvals) {
 139                 kfree(pgraph->ctxprog);
 140                 pgraph->ctxvals = NULL;
 141         }
 142 }
 143
 144 void
 145 nouveau_grctx_vals_load(struct drm_device *dev, struct nouveau_gpuobj *ctx)
 146 {
 147         struct drm_nouveau_private *dev_priv = dev->dev_private;
 148         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 149         struct nouveau_ctxvals *cv = pgraph->ctxvals;
 150         int i;
 151
 152         if (!cv)
 153                 return;
 154
 155         for (i = 0; i < le32_to_cpu(cv->length); i++)
 156                 nv_wo32(dev, ctx, le32_to_cpu(cv->data[i].offset),
 157                         le32_to_cpu(cv->data[i].value));
 158 }