diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_instmem.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvc0_instmem.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_instmem.c b/drivers/gpu/drm/nouveau/nvc0_instmem.c new file mode 100644 index 000000000000..3ab3cdc42173 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvc0_instmem.c @@ -0,0 +1,232 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#include "drmP.h" + +#include "nouveau_drv.h" + +int +nvc0_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, + uint32_t *size) +{ + int ret; + + *size = ALIGN(*size, 4096); + if (*size == 0) + return -EINVAL; + + ret = nouveau_bo_new(dev, NULL, *size, 0, TTM_PL_FLAG_VRAM, 0, 0x0000, + true, false, &gpuobj->im_backing); + if (ret) { + NV_ERROR(dev, "error getting PRAMIN backing pages: %d\n", ret); + return ret; + } + + ret = nouveau_bo_pin(gpuobj->im_backing, TTM_PL_FLAG_VRAM); + if (ret) { + NV_ERROR(dev, "error pinning PRAMIN backing VRAM: %d\n", ret); + nouveau_bo_ref(NULL, &gpuobj->im_backing); + return ret; + } + + gpuobj->im_backing_start = gpuobj->im_backing->bo.mem.mm_node->start; + gpuobj->im_backing_start <<= PAGE_SHIFT; + return 0; +} + +void +nvc0_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); + nouveau_bo_unpin(gpuobj->im_backing); + nouveau_bo_ref(NULL, &gpuobj->im_backing); + gpuobj->im_backing = NULL; + } +} + +int +nvc0_instmem_bind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + uint32_t pte, pte_end; + uint64_t vram; + + if (!gpuobj->im_backing || !gpuobj->im_pramin || gpuobj->im_bound) + return -EINVAL; + + NV_DEBUG(dev, "st=0x%lx sz=0x%lx\n", + gpuobj->im_pramin->start, gpuobj->im_pramin->size); + + pte = gpuobj->im_pramin->start >> 12; + pte_end = (gpuobj->im_pramin->size >> 12) + pte; + vram = gpuobj->im_backing_start; + + NV_DEBUG(dev, "pramin=0x%lx, pte=%d, pte_end=%d\n", + gpuobj->im_pramin->start, pte, pte_end); + NV_DEBUG(dev, "first vram page: 0x%08x\n", gpuobj->im_backing_start); + + while (pte < pte_end) { + nv_wr32(dev, 0x702000 + (pte * 8), (vram >> 8) | 1); + nv_wr32(dev, 0x702004 + (pte * 8), 0); + vram += 4096; + pte++; + } + dev_priv->engine.instmem.flush(dev); + + if (1) { + u32 chan = nv_rd32(dev, 0x1700) << 16; + nv_wr32(dev, 0x100cb8, (chan + 0x1000) >> 8); + nv_wr32(dev, 0x100cbc, 0x80000005); + } + + gpuobj->im_bound = 1; + return 0; +} + +int +nvc0_instmem_unbind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + uint32_t pte, pte_end; + + if (gpuobj->im_bound == 0) + return -EINVAL; + + pte = gpuobj->im_pramin->start >> 12; + pte_end = (gpuobj->im_pramin->size >> 12) + pte; + while (pte < pte_end) { + nv_wr32(dev, 0x702000 + (pte * 8), 0); + nv_wr32(dev, 0x702004 + (pte * 8), 0); + pte++; + } + dev_priv->engine.instmem.flush(dev); + + gpuobj->im_bound = 0; + return 0; +} + +void +nvc0_instmem_flush(struct drm_device *dev) +{ + nv_wr32(dev, 0x070000, 1); + if (!nv_wait(0x070000, 0x00000002, 0x00000000)) + NV_ERROR(dev, "PRAMIN flush timeout\n"); +} + +int +nvc0_instmem_suspend(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + int i; + + dev_priv->susres.ramin_copy = vmalloc(65536); + if (!dev_priv->susres.ramin_copy) + return -ENOMEM; + + for (i = 0x700000; i < 0x710000; i += 4) + dev_priv->susres.ramin_copy[i/4] = nv_rd32(dev, i); + return 0; +} + +void +nvc0_instmem_resume(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + u64 chan; + int i; + + chan = dev_priv->vram_size - dev_priv->ramin_rsvd_vram; + nv_wr32(dev, 0x001700, chan >> 16); + + for (i = 0x700000; i < 0x710000; i += 4) + nv_wr32(dev, i, dev_priv->susres.ramin_copy[i/4]); + vfree(dev_priv->susres.ramin_copy); + dev_priv->susres.ramin_copy = NULL; + + nv_wr32(dev, 0x001714, 0xc0000000 | (chan >> 12)); +} + +int +nvc0_instmem_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + u64 chan, pgt3, imem, lim3 = dev_priv->ramin_size - 1; + int ret, i; + + dev_priv->ramin_rsvd_vram = 1 * 1024 * 1024; + chan = dev_priv->vram_size - dev_priv->ramin_rsvd_vram; + imem = 4096 + 4096 + 32768; + + nv_wr32(dev, 0x001700, chan >> 16); + + /* channel setup */ + nv_wr32(dev, 0x700200, lower_32_bits(chan + 0x1000)); + nv_wr32(dev, 0x700204, upper_32_bits(chan + 0x1000)); + nv_wr32(dev, 0x700208, lower_32_bits(lim3)); + nv_wr32(dev, 0x70020c, upper_32_bits(lim3)); + + /* point pgd -> pgt */ + nv_wr32(dev, 0x701000, 0); + nv_wr32(dev, 0x701004, ((chan + 0x2000) >> 8) | 1); + + /* point pgt -> physical vram for channel */ + pgt3 = 0x2000; + for (i = 0; i < dev_priv->ramin_rsvd_vram; i += 4096, pgt3 += 8) { + nv_wr32(dev, 0x700000 + pgt3, ((chan + i) >> 8) | 1); + nv_wr32(dev, 0x700004 + pgt3, 0); + } + + /* clear rest of pgt */ + for (; i < dev_priv->ramin_size; i += 4096, pgt3 += 8) { + nv_wr32(dev, 0x700000 + pgt3, 0); + nv_wr32(dev, 0x700004 + pgt3, 0); + } + + /* point bar3 at the channel */ + nv_wr32(dev, 0x001714, 0xc0000000 | (chan >> 12)); + + /* Global PRAMIN heap */ + ret = drm_mm_init(&dev_priv->ramin_heap, imem, + dev_priv->ramin_size - imem); + if (ret) { + NV_ERROR(dev, "Failed to init RAMIN heap\n"); + return -ENOMEM; + } + + /*XXX: incorrect, but needed to make hash func "work" */ + dev_priv->ramht_offset = 0x10000; + dev_priv->ramht_bits = 9; + dev_priv->ramht_size = (1 << dev_priv->ramht_bits); + return 0; +} + +void +nvc0_instmem_takedown(struct drm_device *dev) +{ +} + |