diff options
Diffstat (limited to 'shared-core/nv50_instmem.c')
| -rw-r--r-- | shared-core/nv50_instmem.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/shared-core/nv50_instmem.c b/shared-core/nv50_instmem.c new file mode 100644 index 00000000..1eeb54df --- /dev/null +++ b/shared-core/nv50_instmem.c @@ -0,0 +1,320 @@ +/* + * Copyright (C) 2007 Ben Skeggs. + * + * All Rights Reserved. + * + * 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 (including the + * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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. + * + */ + +#include "drmP.h" +#include "drm.h" +#include "nouveau_drv.h" + +typedef struct { + uint32_t save1700[5]; /* 0x1700->0x1710 */ + + struct nouveau_gpuobj_ref *pramin_pt; + struct nouveau_gpuobj_ref *pramin_bar; +} nv50_instmem_priv; + +#define NV50_INSTMEM_PAGE_SHIFT 12 +#define NV50_INSTMEM_PAGE_SIZE (1 << NV50_INSTMEM_PAGE_SHIFT) +#define NV50_INSTMEM_PT_SIZE(a) (((a) >> 12) << 3) + +/*NOTE: - Assumes 0x1700 already covers the correct MiB of PRAMIN + */ +#define BAR0_WI32(g,o,v) do { \ + uint32_t offset; \ + if ((g)->im_backing) { \ + offset = (g)->im_backing->start; \ + } else { \ + offset = chan->ramin->gpuobj->im_backing->start; \ + offset += (g)->im_pramin->start; \ + } \ + offset += (o); \ + NV_WRITE(NV_RAMIN + (offset & 0xfffff), (v)); \ +} while(0) + +int +nv50_instmem_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_channel *chan; + uint32_t c_offset, c_size, c_ramfc, c_vmpd, c_base, pt_size; + nv50_instmem_priv *priv; + int ret, i; + uint32_t v; + + priv = drm_calloc(1, sizeof(*priv), DRM_MEM_DRIVER); + if (!priv) + return -ENOMEM; + dev_priv->Engine.instmem.priv = priv; + + /* Reserve the last MiB of VRAM, we should probably try to avoid + * setting up the below tables over the top of the VBIOS image at + * some point. + */ + dev_priv->ramin_rsvd_vram = 1 << 20; + c_offset = nouveau_mem_fb_amount(dev) - dev_priv->ramin_rsvd_vram; + c_size = 128 << 10; + c_vmpd = ((dev_priv->chipset & 0xf0) == 0x50) ? 0x1400 : 0x200; + c_ramfc = ((dev_priv->chipset & 0xf0) == 0x50) ? 0x0 : 0x20; + c_base = c_vmpd + 0x4000; + pt_size = NV50_INSTMEM_PT_SIZE(dev_priv->ramin->size); + + DRM_DEBUG(" Rsvd VRAM base: 0x%08x\n", c_offset); + DRM_DEBUG(" VBIOS image: 0x%08x\n", (NV_READ(0x619f04)&~0xff)<<8); + DRM_DEBUG(" Aperture size: %d MiB\n", + (uint32_t)dev_priv->ramin->size >> 20); + DRM_DEBUG(" PT size: %d KiB\n", pt_size >> 10); + + NV_WRITE(NV50_PUNK_BAR0_PRAMIN, (c_offset >> 16)); + + /* Create a fake channel, and use it as our "dummy" channels 0/127. + * The main reason for creating a channel is so we can use the gpuobj + * code. However, it's probably worth noting that NVIDIA also setup + * their channels 0/127 with the same values they configure here. + * So, there may be some other reason for doing this. + * + * Have to create the entire channel manually, as the real channel + * creation code assumes we have PRAMIN access, and we don't until + * we're done here. + */ + chan = drm_calloc(1, sizeof(*chan), DRM_MEM_DRIVER); + if (!chan) + return -ENOMEM; + chan->id = 0; + chan->dev = dev; + chan->file_priv = (struct drm_file *)-2; + dev_priv->fifos[0] = dev_priv->fifos[127] = chan; + + /* Channel's PRAMIN object + heap */ + if ((ret = nouveau_gpuobj_new_fake(dev, 0, c_offset, 128<<10, 0, + NULL, &chan->ramin))) + return ret; + + if (nouveau_mem_init_heap(&chan->ramin_heap, c_base, c_size - c_base)) + return -ENOMEM; + + /* RAMFC + zero channel's PRAMIN up to start of VM pagedir */ + if ((ret = nouveau_gpuobj_new_fake(dev, c_ramfc, c_offset + c_ramfc, + 0x4000, 0, NULL, &chan->ramfc))) + return ret; + + for (i = 0; i < c_vmpd; i += 4) + BAR0_WI32(chan->ramin->gpuobj, i, 0); + + /* VM page directory */ + if ((ret = nouveau_gpuobj_new_fake(dev, c_vmpd, c_offset + c_vmpd, + 0x4000, 0, &chan->vm_pd, NULL))) + return ret; + for (i = 0; i < 0x4000; i += 8) { + BAR0_WI32(chan->vm_pd, i + 0x00, 0x00000000); + BAR0_WI32(chan->vm_pd, i + 0x04, 0x00000000); + } + + /* PRAMIN page table, cheat and map into VM at 0x0000000000. + * We map the entire fake channel into the start of the PRAMIN BAR + */ + if ((ret = nouveau_gpuobj_new_ref(dev, chan, NULL, 0, pt_size, 0x1000, + 0, &priv->pramin_pt))) + return ret; + + for (i = 0, v = c_offset; i < pt_size; i+=8, v+=0x1000) { + if (v < (c_offset + c_size)) + BAR0_WI32(priv->pramin_pt->gpuobj, i + 0, v | 1); + else + BAR0_WI32(priv->pramin_pt->gpuobj, i + 0, 0x00000009); + BAR0_WI32(priv->pramin_pt->gpuobj, i + 4, 0x00000000); + } + + BAR0_WI32(chan->vm_pd, 0x00, priv->pramin_pt->instance | 0x63); + BAR0_WI32(chan->vm_pd, 0x04, 0x00000000); + + /* DMA object for PRAMIN BAR */ + if ((ret = nouveau_gpuobj_new_ref(dev, chan, chan, 0, 6*4, 16, 0, + &priv->pramin_bar))) + return ret; + BAR0_WI32(priv->pramin_bar->gpuobj, 0x00, 0x7fc00000); + BAR0_WI32(priv->pramin_bar->gpuobj, 0x04, dev_priv->ramin->size - 1); + BAR0_WI32(priv->pramin_bar->gpuobj, 0x08, 0x00000000); + BAR0_WI32(priv->pramin_bar->gpuobj, 0x0c, 0x00000000); + BAR0_WI32(priv->pramin_bar->gpuobj, 0x10, 0x00000000); + BAR0_WI32(priv->pramin_bar->gpuobj, 0x14, 0x00000000); + + /* Poke the relevant regs, and pray it works :) */ + NV_WRITE(NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12)); + NV_WRITE(NV50_PUNK_UNK1710, 0); + NV_WRITE(NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12) | + NV50_PUNK_BAR_CFG_BASE_VALID); + NV_WRITE(NV50_PUNK_BAR1_CTXDMA, 0); + NV_WRITE(NV50_PUNK_BAR3_CTXDMA, (priv->pramin_bar->instance >> 4) | + NV50_PUNK_BAR3_CTXDMA_VALID); + + /* Assume that praying isn't enough, check that we can re-read the + * entire fake channel back from the PRAMIN BAR */ + for (i = 0; i < c_size; i+=4) { + if (NV_READ(NV_RAMIN + i) != NV_RI32(i)) { + DRM_ERROR("Error reading back PRAMIN at 0x%08x\n", i); + return -EINVAL; + } + } + + /* Global PRAMIN heap */ + if (nouveau_mem_init_heap(&dev_priv->ramin_heap, + c_size, dev_priv->ramin->size - c_size)) { + dev_priv->ramin_heap = NULL; + DRM_ERROR("Failed to init RAMIN heap\n"); + } + + /*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 +nv50_instmem_takedown(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + nv50_instmem_priv *priv = dev_priv->Engine.instmem.priv; + struct nouveau_channel *chan = dev_priv->fifos[0]; + int i; + + DRM_DEBUG("\n"); + + if (!priv) + return; + + /* Restore state from before init */ + for (i = 0x1700; i <= 0x1710; i+=4) + NV_WRITE(i, priv->save1700[(i-0x1700)/4]); + + nouveau_gpuobj_ref_del(dev, &priv->pramin_bar); + nouveau_gpuobj_ref_del(dev, &priv->pramin_pt); + + /* Destroy dummy channel */ + if (chan) { + nouveau_gpuobj_del(dev, &chan->vm_pd); + nouveau_gpuobj_ref_del(dev, &chan->ramfc); + nouveau_gpuobj_ref_del(dev, &chan->ramin); + nouveau_mem_takedown(&chan->ramin_heap); + + dev_priv->fifos[0] = dev_priv->fifos[127] = NULL; + drm_free(chan, sizeof(*chan), DRM_MEM_DRIVER); + } + + dev_priv->Engine.instmem.priv = NULL; + drm_free(priv, sizeof(*priv), DRM_MEM_DRIVER); +} + +int +nv50_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, uint32_t *sz) +{ + if (gpuobj->im_backing) + return -EINVAL; + + *sz = (*sz + (NV50_INSTMEM_PAGE_SIZE-1)) & ~(NV50_INSTMEM_PAGE_SIZE-1); + if (*sz == 0) + return -EINVAL; + + gpuobj->im_backing = nouveau_mem_alloc(dev, NV50_INSTMEM_PAGE_SIZE, + *sz, NOUVEAU_MEM_FB, + (struct drm_file *)-2); + if (!gpuobj->im_backing) { + DRM_ERROR("Couldn't allocate vram to back PRAMIN pages\n"); + return -ENOMEM; + } + + return 0; +} + +void +nv50_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_mem_free(dev, gpuobj->im_backing); + gpuobj->im_backing = NULL; + } +} + +int +nv50_instmem_bind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + nv50_instmem_priv *priv = dev_priv->Engine.instmem.priv; + uint32_t pte, pte_end, vram; + + if (!gpuobj->im_backing || !gpuobj->im_pramin || gpuobj->im_bound) + return -EINVAL; + + DRM_DEBUG("st=0x%0llx sz=0x%0llx\n", + gpuobj->im_pramin->start, gpuobj->im_pramin->size); + + pte = (gpuobj->im_pramin->start >> 12) << 3; + pte_end = ((gpuobj->im_pramin->size >> 12) << 3) + pte; + vram = gpuobj->im_backing->start; + + DRM_DEBUG("pramin=0x%llx, pte=%d, pte_end=%d\n", + gpuobj->im_pramin->start, pte, pte_end); + DRM_DEBUG("first vram page: 0x%llx\n", + gpuobj->im_backing->start); + + while (pte < pte_end) { + INSTANCE_WR(priv->pramin_pt->gpuobj, (pte + 0)/4, vram | 1); + INSTANCE_WR(priv->pramin_pt->gpuobj, (pte + 4)/4, 0x00000000); + + pte += 8; + vram += NV50_INSTMEM_PAGE_SIZE; + } + + gpuobj->im_bound = 1; + return 0; +} + +int +nv50_instmem_unbind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + nv50_instmem_priv *priv = dev_priv->Engine.instmem.priv; + uint32_t pte, pte_end; + + if (gpuobj->im_bound == 0) + return -EINVAL; + + pte = (gpuobj->im_pramin->start >> 12) << 3; + pte_end = ((gpuobj->im_pramin->size >> 12) << 3) + pte; + while (pte < pte_end) { + INSTANCE_WR(priv->pramin_pt->gpuobj, (pte + 0)/4, 0x00000009); + INSTANCE_WR(priv->pramin_pt->gpuobj, (pte + 4)/4, 0x00000000); + pte += 8; + } + + gpuobj->im_bound = 0; + return 0; +} + |