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->accel_blocked)
  60                 return -ENODEV;
  61
  62         if (!pgraph->ctxprog) {
  63                 sprintf(name, "nouveau/nv%02x.ctxprog", chipset);
  64                 ret = request_firmware(&fw, name, &dev->pdev->dev);
  65                 if (ret) {
  66                         NV_ERROR(dev, "No ctxprog for NV%02x\n", chipset);
  67                         return ret;
  68                 }
  69
  70                 pgraph->ctxprog = kmalloc(fw->size, GFP_KERNEL);
  71                 if (!pgraph->ctxprog) {
  72                         NV_ERROR(dev, "OOM copying ctxprog\n");
  73                         release_firmware(fw);
  74                         return -ENOMEM;
  75                 }
  76                 memcpy(pgraph->ctxprog, fw->data, fw->size);
  77
  78                 cp = pgraph->ctxprog;
  79                 if (le32_to_cpu(cp->signature) != 0x5043564e ||
  80                     cp->version != 0 ||
  81                     le16_to_cpu(cp->length) != ((fw->size - 7) / 4)) {
  82                         NV_ERROR(dev, "ctxprog invalid\n");
  83                         release_firmware(fw);
  84                         nouveau_grctx_fini(dev);
  85                         return -EINVAL;
  86                 }
  87                 release_firmware(fw);
  88         }
  89
  90         if (!pgraph->ctxvals) {
  91                 sprintf(name, "nouveau/nv%02x.ctxvals", chipset);
  92                 ret = request_firmware(&fw, name, &dev->pdev->dev);
  93                 if (ret) {
  94                         NV_ERROR(dev, "No ctxvals for NV%02x\n", chipset);
  95                         nouveau_grctx_fini(dev);
  96                         return ret;
  97                 }
  98
  99                 pgraph->ctxvals = kmalloc(fw->size, GFP_KERNEL);
 100                 if (!pgraph->ctxprog) {
 101                         NV_ERROR(dev, "OOM copying ctxprog\n");
 102                         release_firmware(fw);
 103                         nouveau_grctx_fini(dev);
 104                         return -ENOMEM;
 105                 }
 106                 memcpy(pgraph->ctxvals, fw->data, fw->size);
 107
 108                 cv = (void *)pgraph->ctxvals;
 109                 if (le32_to_cpu(cv->signature) != 0x5643564e ||
 110                     cv->version != 0 ||
 111                     le32_to_cpu(cv->length) != ((fw->size - 9) / 8)) {
 112                         NV_ERROR(dev, "ctxvals invalid\n");
 113                         release_firmware(fw);
 114                         nouveau_grctx_fini(dev);
 115                         return -EINVAL;
 116                 }
 117                 release_firmware(fw);
 118         }
 119
 120         cp = pgraph->ctxprog;
 121
 122         nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
 123         for (i = 0; i < le16_to_cpu(cp->length); i++)
 124                 nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA,
 125                         le32_to_cpu(cp->data[i]));
 126
 127         return 0;
 128 }
 129
 130 void
 131 nouveau_grctx_fini(struct drm_device *dev)
 132 {
 133         struct drm_nouveau_private *dev_priv = dev->dev_private;
 134         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 135
 136         if (pgraph->ctxprog) {
 137                 kfree(pgraph->ctxprog);
 138                 pgraph->ctxprog = NULL;
 139         }
 140
 141         if (pgraph->ctxvals) {
 142                 kfree(pgraph->ctxprog);
 143                 pgraph->ctxvals = NULL;
 144         }
 145 }
 146
 147 void
 148 nouveau_grctx_vals_load(struct drm_device *dev, struct nouveau_gpuobj *ctx)
 149 {
 150         struct drm_nouveau_private *dev_priv = dev->dev_private;
 151         struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 152         struct nouveau_ctxvals *cv = pgraph->ctxvals;
 153         int i;
 154
 155         if (!cv)
 156                 return;
 157
 158         for (i = 0; i < le32_to_cpu(cv->length); i++)
 159                 nv_wo32(dev, ctx, le32_to_cpu(cv->data[i].offset),
 160                         le32_to_cpu(cv->data[i].value));
 161 }