shared-core/i915_init.c

   1 #include "drmP.h"
   2 #include "drm.h"
   3 #include "drm_sarea.h"
   4 #include "i915_drm.h"
   5 #include "i915_drv.h"
   6
   7 /**
   8  * i915_driver_load - setup chip and create an initial config
   9  * @dev: DRM device
  10  * @flags: startup flags
  11  *
  12  * The driver load routine has to do several things:
  13  *   - drive output discovery via intel_modeset_init()
  14  *   - initialize the memory manager
  15  *   - allocate initial config memory
  16  *   - setup the DRM framebuffer with the allocated memory
  17  */
  18 int i915_driver_load(drm_device_t *dev, unsigned long flags)
  19 {
  20         drm_i915_private_t *dev_priv;
  21         drm_i915_init_t init;
  22         drm_buffer_object_t *entry;
  23         struct drm_framebuffer *fb;
  24         int ret;
  25
  26         dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER);
  27         if (dev_priv == NULL)
  28                 return DRM_ERR(ENOMEM);
  29
  30         memset(dev_priv, 0, sizeof(drm_i915_private_t));
  31         dev->dev_private = (void *)dev_priv;
  32 //      dev_priv->flags = flags;
  33
  34         /* i915 has 4 more counters */
  35         dev->counters += 4;
  36         dev->types[6] = _DRM_STAT_IRQ;
  37         dev->types[7] = _DRM_STAT_PRIMARY;
  38         dev->types[8] = _DRM_STAT_SECONDARY;
  39         dev->types[9] = _DRM_STAT_DMA;
  40
  41         if (IS_I9XX(dev)) {
  42                 dev_priv->mmiobase = drm_get_resource_start(dev, 0);
  43                 dev_priv->mmiolen = drm_get_resource_len(dev, 0);
  44                 dev->mode_config.fb_base = dev_priv->baseaddr = drm_get_resource_start(dev, 2) & 0xff000000;
  45         } else if (drm_get_resource_start(dev, 1)) {
  46                 dev_priv->mmiobase = drm_get_resource_start(dev, 1);
  47                 dev_priv->mmiolen = drm_get_resource_len(dev, 1);
  48                 dev->mode_config.fb_base = dev_priv->baseaddr = drm_get_resource_start(dev, 0) & 0xff000000;
  49         } else {
  50                 DRM_ERROR("Unable to find MMIO registers\n");
  51                 return -ENODEV;
  52         }
  53
  54         ret = drm_addmap(dev, dev_priv->mmiobase, dev_priv->mmiolen,
  55                          _DRM_REGISTERS, _DRM_READ_ONLY, &dev_priv->mmio_map);
  56         if (ret != 0) {
  57                 DRM_ERROR("Cannot add mapping for MMIO registers\n");
  58                 return ret;
  59         }
  60
  61         ret = drm_setup(dev);
  62         if (ret) {
  63                 DRM_ERROR("drm_setup failed\n");
  64                 return ret;
  65         }
  66
  67         DRM_GETSAREA();
  68         if (!dev_priv->sarea) {
  69                 DRM_ERROR("can not find sarea!\n");
  70                 dev->dev_private = (void *)dev_priv;
  71                 i915_dma_cleanup(dev);
  72                 return DRM_ERR(EINVAL);
  73         }
  74
  75         /* FIXME: assume sarea_priv is right after SAREA */
  76         dev_priv->sarea_priv = dev_priv->sarea->handle + sizeof(drm_sarea_t);
  77
  78         /*
  79          * Initialize the memory manager for local and AGP space
  80          */
  81         drm_bo_driver_init(dev);
  82         /* FIXME: initial stolen area 8M init */
  83 #define SCANOUT_SIZE 1024*1024*8 /* big enough for 2048x1024 32bpp */
  84         drm_bo_init_mm(dev, DRM_BO_MEM_PRIV0, dev->mode_config.fb_base,
  85                        SCANOUT_SIZE);
  86
  87         /* Allocate scanout buffer and command ring */
  88         /* FIXME: types and other args correct? */
  89         drm_buffer_object_create(dev, SCANOUT_SIZE, drm_bo_type_dc,
  90                                  DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE |
  91                                  DRM_BO_FLAG_MEM_PRIV0 | DRM_BO_FLAG_NO_MOVE,
  92                                  0, PAGE_SIZE, 0,
  93                                  &entry);
  94
  95         DRM_DEBUG("allocated bo, start: 0x%lx, offset: 0x%lx\n",
  96                   entry->buffer_start, entry->offset);
  97         intel_modeset_init(dev);
  98
  99         fb = drm_framebuffer_create(dev);
 100         if (!fb) {
 101                 DRM_ERROR("failed to allocate fb\n");
 102                 return -EINVAL;
 103         }
 104
 105         fb->width = 1024;
 106         fb->height = 768;
 107         fb->pitch = 1024;
 108         fb->bits_per_pixel = 32;
 109         fb->depth = 32;
 110         fb->offset = entry->offset;
 111         fb->bo = entry;
 112
 113         drm_initial_config(dev, fb, false);
 114         drmfb_probe(dev, fb);
 115         drm_set_desired_modes(dev);
 116
 117 #if 0
 118         /* FIXME: command ring needs AGP space, do we own it at this point? */
 119         dev_priv->ring.Start = dev_priv->baseaddr;
 120         dev_priv->ring.End = 128*1024;
 121         dev_priv->ring.Size = 128*1024;
 122         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 123
 124         dev_priv->ring.map.offset = dev_priv->ring.Start;
 125         dev_priv->ring.map.size = dev_priv->ring.Size;
 126         dev_priv->ring.map.type = 0;
 127         dev_priv->ring.map.flags = 0;
 128         dev_priv->ring.map.mtrr = 0;
 129
 130         drm_core_ioremap(&dev_priv->ring.map, dev);
 131
 132         if (dev_priv->ring.map.handle == NULL) {
 133                 dev->dev_private = (void *)dev_priv;
 134                 i915_dma_cleanup(dev);
 135                 DRM_ERROR("can not ioremap virtual address for"
 136                           " ring buffer\n");
 137                 return DRM_ERR(ENOMEM);
 138         }
 139
 140         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
 141         dev_priv->cpp = 4;
 142         dev_priv->sarea_priv->pf_current_page = 0;
 143
 144         /* We are using separate values as placeholders for mechanisms for
 145          * private backbuffer/depthbuffer usage.
 146          */
 147         dev_priv->use_mi_batchbuffer_start = 0;
 148
 149         /* Allow hardware batchbuffers unless told otherwise.
 150          */
 151         dev_priv->allow_batchbuffer = 1;
 152
 153         /* Program Hardware Status Page */
 154         dev_priv->status_page_dmah = drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE,
 155             0xffffffff);
 156
 157         if (!dev_priv->status_page_dmah) {
 158                 dev->dev_private = (void *)dev_priv;
 159                 i915_dma_cleanup(dev);
 160                 DRM_ERROR("Can not allocate hardware status page\n");
 161                 return DRM_ERR(ENOMEM);
 162         }
 163         dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
 164         dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
 165
 166         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 167         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 168
 169         I915_WRITE(0x02080, dev_priv->dma_status_page);
 170         DRM_DEBUG("Enabled hardware status page\n");
 171 #endif
 172
 173         return 0;
 174 }
 175
 176 int i915_driver_unload(drm_device_t *dev)
 177 {
 178         drm_i915_private_t *dev_priv = dev->dev_private;
 179         struct drm_framebuffer *fb;
 180
 181         /* FIXME: remove framebuffer */
 182         //intel_modeset_cleanup(dev);
 183         drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
 184
 185         dev->dev_private = NULL;
 186         return 0;
 187 }
 188
 189 void i915_driver_lastclose(drm_device_t * dev)
 190 {
 191         drm_i915_private_t *dev_priv = dev->dev_private;
 192
 193         i915_mem_takedown(&(dev_priv->agp_heap));
 194
 195         i915_dma_cleanup(dev);
 196
 197         dev_priv->mmio_map = NULL;
 198 }
 199
 200 void i915_driver_preclose(drm_device_t * dev, DRMFILE filp)
 201 {
 202         drm_i915_private_t *dev_priv = dev->dev_private;
 203         i915_mem_release(dev, filp, dev_priv->agp_heap);
 204 }
 205