diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv04_instmem.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv04_instmem.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv04_instmem.c b/drivers/gpu/drm/nouveau/nv04_instmem.c new file mode 100644 index 00000000..b8611b95 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv04_instmem.c @@ -0,0 +1,166 @@ +#include "drmP.h" +#include "drm.h" +#include "nouveau_drv.h" +#include "nouveau_ramht.h" + +/* returns the size of fifo context */ +static int +nouveau_fifo_ctx_size(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + + if (dev_priv->chipset >= 0x40) + return 128; + else + if (dev_priv->chipset >= 0x17) + return 64; + + return 32; +} + +int nv04_instmem_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_gpuobj *ramht = NULL; + u32 offset, length; + int ret; + + /* RAMIN always available */ + dev_priv->ramin_available = true; + + /* Setup shared RAMHT */ + ret = nouveau_gpuobj_new_fake(dev, 0x10000, ~0, 4096, + NVOBJ_FLAG_ZERO_ALLOC, &ramht); + if (ret) + return ret; + + ret = nouveau_ramht_new(dev, ramht, &dev_priv->ramht); + nouveau_gpuobj_ref(NULL, &ramht); + if (ret) + return ret; + + /* And RAMRO */ + ret = nouveau_gpuobj_new_fake(dev, 0x11200, ~0, 512, + NVOBJ_FLAG_ZERO_ALLOC, &dev_priv->ramro); + if (ret) + return ret; + + /* And RAMFC */ + length = dev_priv->engine.fifo.channels * nouveau_fifo_ctx_size(dev); + switch (dev_priv->card_type) { + case NV_40: + offset = 0x20000; + break; + default: + offset = 0x11400; + break; + } + + ret = nouveau_gpuobj_new_fake(dev, offset, ~0, length, + NVOBJ_FLAG_ZERO_ALLOC, &dev_priv->ramfc); + if (ret) + return ret; + + /* Only allow space after RAMFC to be used for object allocation */ + offset += length; + + /* It appears RAMRO (or something?) is controlled by 0x2220/0x2230 + * on certain NV4x chipsets as well as RAMFC. When 0x2230 == 0 + * ("new style" control) the upper 16-bits of 0x2220 points at this + * other mysterious table that's clobbering important things. + * + * We're now pointing this at RAMIN+0x30000 to avoid RAMFC getting + * smashed to pieces on us, so reserve 0x30000-0x40000 too.. + */ + if (dev_priv->card_type >= NV_40) { + if (offset < 0x40000) + offset = 0x40000; + } + + ret = drm_mm_init(&dev_priv->ramin_heap, offset, + dev_priv->ramin_rsvd_vram - offset); + if (ret) { + NV_ERROR(dev, "Failed to init RAMIN heap: %d\n", ret); + return ret; + } + + return 0; +} + +void +nv04_instmem_takedown(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + + nouveau_ramht_ref(NULL, &dev_priv->ramht, NULL); + nouveau_gpuobj_ref(NULL, &dev_priv->ramro); + nouveau_gpuobj_ref(NULL, &dev_priv->ramfc); + + if (drm_mm_initialized(&dev_priv->ramin_heap)) + drm_mm_takedown(&dev_priv->ramin_heap); +} + +int +nv04_instmem_suspend(struct drm_device *dev) +{ + return 0; +} + +void +nv04_instmem_resume(struct drm_device *dev) +{ +} + +int +nv04_instmem_get(struct nouveau_gpuobj *gpuobj, u32 size, u32 align) +{ + struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private; + struct drm_mm_node *ramin = NULL; + + do { + if (drm_mm_pre_get(&dev_priv->ramin_heap)) + return -ENOMEM; + + spin_lock(&dev_priv->ramin_lock); + ramin = drm_mm_search_free(&dev_priv->ramin_heap, size, align, 0); + if (ramin == NULL) { + spin_unlock(&dev_priv->ramin_lock); + return -ENOMEM; + } + + ramin = drm_mm_get_block_atomic(ramin, size, align); + spin_unlock(&dev_priv->ramin_lock); + } while (ramin == NULL); + + gpuobj->node = ramin; + gpuobj->vinst = ramin->start; + return 0; +} + +void +nv04_instmem_put(struct nouveau_gpuobj *gpuobj) +{ + struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private; + + spin_lock(&dev_priv->ramin_lock); + drm_mm_put_block(gpuobj->node); + gpuobj->node = NULL; + spin_unlock(&dev_priv->ramin_lock); +} + +int +nv04_instmem_map(struct nouveau_gpuobj *gpuobj) +{ + gpuobj->pinst = gpuobj->vinst; + return 0; +} + +void +nv04_instmem_unmap(struct nouveau_gpuobj *gpuobj) +{ +} + +void +nv04_instmem_flush(struct drm_device *dev) +{ +} |