diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv04_instmem.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv04_instmem.c | 208 |
1 files changed, 208 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 000000000000..a20c206625a2 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv04_instmem.c @@ -0,0 +1,208 @@ +#include "drmP.h" +#include "drm.h" +#include "nouveau_drv.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; +} + +static void +nv04_instmem_determine_amount(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + int i; + + /* Figure out how much instance memory we need */ + if (dev_priv->card_type >= NV_40) { + /* We'll want more instance memory than this on some NV4x cards. + * There's a 16MB aperture to play with that maps onto the end + * of vram. For now, only reserve a small piece until we know + * more about what each chipset requires. + */ + switch (dev_priv->chipset & 0xf0) { + case 0x40: + case 0x47: + case 0x49: + case 0x4b: + dev_priv->ramin_rsvd_vram = (2 * 1024 * 1024); + break; + default: + dev_priv->ramin_rsvd_vram = (1 * 1024 * 1024); + break; + } + } else { + /*XXX: what *are* the limits on <NV40 cards? + */ + dev_priv->ramin_rsvd_vram = (512 * 1024); + } + NV_DEBUG(dev, "RAMIN size: %dKiB\n", dev_priv->ramin_rsvd_vram >> 10); + + /* Clear all of it, except the BIOS image that's in the first 64KiB */ + dev_priv->engine.instmem.prepare_access(dev, true); + for (i = 64 * 1024; i < dev_priv->ramin_rsvd_vram; i += 4) + nv_wi32(dev, i, 0x00000000); + dev_priv->engine.instmem.finish_access(dev); +} + +static void +nv04_instmem_configure_fixed_tables(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_engine *engine = &dev_priv->engine; + + /* FIFO hash table (RAMHT) + * use 4k hash table at RAMIN+0x10000 + * TODO: extend the hash table + */ + dev_priv->ramht_offset = 0x10000; + dev_priv->ramht_bits = 9; + dev_priv->ramht_size = (1 << dev_priv->ramht_bits); /* nr entries */ + dev_priv->ramht_size *= 8; /* 2 32-bit values per entry in RAMHT */ + NV_DEBUG(dev, "RAMHT offset=0x%x, size=%d\n", dev_priv->ramht_offset, + dev_priv->ramht_size); + + /* FIFO runout table (RAMRO) - 512k at 0x11200 */ + dev_priv->ramro_offset = 0x11200; + dev_priv->ramro_size = 512; + NV_DEBUG(dev, "RAMRO offset=0x%x, size=%d\n", dev_priv->ramro_offset, + dev_priv->ramro_size); + + /* FIFO context table (RAMFC) + * NV40 : Not sure exactly how to position RAMFC on some cards, + * 0x30002 seems to position it at RAMIN+0x20000 on these + * cards. RAMFC is 4kb (32 fifos, 128byte entries). + * Others: Position RAMFC at RAMIN+0x11400 + */ + dev_priv->ramfc_size = engine->fifo.channels * + nouveau_fifo_ctx_size(dev); + switch (dev_priv->card_type) { + case NV_40: + dev_priv->ramfc_offset = 0x20000; + break; + case NV_30: + case NV_20: + case NV_10: + case NV_04: + default: + dev_priv->ramfc_offset = 0x11400; + break; + } + NV_DEBUG(dev, "RAMFC offset=0x%x, size=%d\n", dev_priv->ramfc_offset, + dev_priv->ramfc_size); +} + +int nv04_instmem_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + uint32_t offset; + int ret = 0; + + nv04_instmem_determine_amount(dev); + nv04_instmem_configure_fixed_tables(dev); + + /* Create a heap to manage RAMIN allocations, we don't allocate + * the space that was reserved for RAMHT/FC/RO. + */ + offset = dev_priv->ramfc_offset + dev_priv->ramfc_size; + + /* 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 = nouveau_mem_init_heap(&dev_priv->ramin_heap, + offset, dev_priv->ramin_rsvd_vram - offset); + if (ret) { + dev_priv->ramin_heap = NULL; + NV_ERROR(dev, "Failed to init RAMIN heap\n"); + } + + return ret; +} + +void +nv04_instmem_takedown(struct drm_device *dev) +{ +} + +int +nv04_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, uint32_t *sz) +{ + if (gpuobj->im_backing) + return -EINVAL; + + return 0; +} + +void +nv04_instmem_clear(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + + if (gpuobj && gpuobj->im_backing) { + if (gpuobj->im_bound) + dev_priv->engine.instmem.unbind(dev, gpuobj); + gpuobj->im_backing = NULL; + } +} + +int +nv04_instmem_bind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) +{ + if (!gpuobj->im_pramin || gpuobj->im_bound) + return -EINVAL; + + gpuobj->im_bound = 1; + return 0; +} + +int +nv04_instmem_unbind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) +{ + if (gpuobj->im_bound == 0) + return -EINVAL; + + gpuobj->im_bound = 0; + return 0; +} + +void +nv04_instmem_prepare_access(struct drm_device *dev, bool write) +{ +} + +void +nv04_instmem_finish_access(struct drm_device *dev) +{ +} + +int +nv04_instmem_suspend(struct drm_device *dev) +{ + return 0; +} + +void +nv04_instmem_resume(struct drm_device *dev) +{ +} + |