diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_instmem.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_instmem.c | 509 |
1 files changed, 509 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_instmem.c b/drivers/gpu/drm/nouveau/nv50_instmem.c new file mode 100644 index 000000000000..94400f777e7f --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv50_instmem.c @@ -0,0 +1,509 @@ +/* + * 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" + +struct nv50_instmem_priv { + uint32_t save1700[5]; /* 0x1700->0x1710 */ + + struct nouveau_gpuobj_ref *pramin_pt; + struct nouveau_gpuobj_ref *pramin_bar; + struct nouveau_gpuobj_ref *fb_bar; + + bool last_access_wr; +}; + +#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_wr32(dev, 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; + struct nv50_instmem_priv *priv; + int ret, i; + uint32_t v, save_nv001700; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + dev_priv->engine.instmem.priv = priv; + + /* Save state, will restore at takedown. */ + for (i = 0x1700; i <= 0x1710; i += 4) + priv->save1700[(i-0x1700)/4] = nv_rd32(dev, i); + + /* 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); + + NV_DEBUG(dev, " Rsvd VRAM base: 0x%08x\n", c_offset); + NV_DEBUG(dev, " VBIOS image: 0x%08x\n", + (nv_rd32(dev, 0x619f04) & ~0xff) << 8); + NV_DEBUG(dev, " Aperture size: %d MiB\n", dev_priv->ramin_size >> 20); + NV_DEBUG(dev, " PT size: %d KiB\n", pt_size >> 10); + + /* Determine VM layout, we need to do this first to make sure + * we allocate enough memory for all the page tables. + */ + dev_priv->vm_gart_base = roundup(NV50_VM_BLOCK, NV50_VM_BLOCK); + dev_priv->vm_gart_size = NV50_VM_BLOCK; + + dev_priv->vm_vram_base = dev_priv->vm_gart_base + dev_priv->vm_gart_size; + dev_priv->vm_vram_size = nouveau_mem_fb_amount(dev); + if (dev_priv->vm_vram_size > NV50_VM_MAX_VRAM) + dev_priv->vm_vram_size = NV50_VM_MAX_VRAM; + dev_priv->vm_vram_size = roundup(dev_priv->vm_vram_size, NV50_VM_BLOCK); + dev_priv->vm_vram_pt_nr = dev_priv->vm_vram_size / NV50_VM_BLOCK; + + dev_priv->vm_end = dev_priv->vm_vram_base + dev_priv->vm_vram_size; + + NV_DEBUG(dev, "NV50VM: GART 0x%016llx-0x%016llx\n", + dev_priv->vm_gart_base, + dev_priv->vm_gart_base + dev_priv->vm_gart_size - 1); + NV_DEBUG(dev, "NV50VM: VRAM 0x%016llx-0x%016llx\n", + dev_priv->vm_vram_base, + dev_priv->vm_vram_base + dev_priv->vm_vram_size - 1); + + c_size += dev_priv->vm_vram_pt_nr * (NV50_VM_BLOCK / 65536 * 8); + + /* Map BAR0 PRAMIN aperture over the memory we want to use */ + save_nv001700 = nv_rd32(dev, NV50_PUNK_BAR0_PRAMIN); + nv_wr32(dev, 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 = kzalloc(sizeof(*chan), GFP_KERNEL); + 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 */ + ret = nouveau_gpuobj_new_fake(dev, 0, c_offset, c_size, 0, + NULL, &chan->ramin); + if (ret) + 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 */ + ret = nouveau_gpuobj_new_fake(dev, c_ramfc, c_offset + c_ramfc, + 0x4000, 0, NULL, &chan->ramfc); + if (ret) + return ret; + + for (i = 0; i < c_vmpd; i += 4) + BAR0_WI32(chan->ramin->gpuobj, i, 0); + + /* VM page directory */ + ret = nouveau_gpuobj_new_fake(dev, c_vmpd, c_offset + c_vmpd, + 0x4000, 0, &chan->vm_pd, NULL); + if (ret) + 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 + */ + ret = nouveau_gpuobj_new_ref(dev, chan, NULL, 0, pt_size, 0x1000, + 0, &priv->pramin_pt); + if (ret) + 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); + + /* VRAM page table(s), mapped into VM at +1GiB */ + for (i = 0; i < dev_priv->vm_vram_pt_nr; i++) { + ret = nouveau_gpuobj_new_ref(dev, chan, NULL, 0, + NV50_VM_BLOCK/65536*8, 0, 0, + &chan->vm_vram_pt[i]); + if (ret) { + NV_ERROR(dev, "Error creating VRAM page tables: %d\n", + ret); + dev_priv->vm_vram_pt_nr = i; + return ret; + } + dev_priv->vm_vram_pt[i] = chan->vm_vram_pt[i]->gpuobj; + + for (v = 0; v < dev_priv->vm_vram_pt[i]->im_pramin->size; + v += 4) + BAR0_WI32(dev_priv->vm_vram_pt[i], v, 0); + + BAR0_WI32(chan->vm_pd, 0x10 + (i*8), + chan->vm_vram_pt[i]->instance | 0x61); + BAR0_WI32(chan->vm_pd, 0x14 + (i*8), 0); + } + + /* DMA object for PRAMIN BAR */ + ret = nouveau_gpuobj_new_ref(dev, chan, chan, 0, 6*4, 16, 0, + &priv->pramin_bar); + if (ret) + 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); + + /* DMA object for FB BAR */ + ret = nouveau_gpuobj_new_ref(dev, chan, chan, 0, 6*4, 16, 0, + &priv->fb_bar); + if (ret) + return ret; + BAR0_WI32(priv->fb_bar->gpuobj, 0x00, 0x7fc00000); + BAR0_WI32(priv->fb_bar->gpuobj, 0x04, 0x40000000 + + drm_get_resource_len(dev, 1) - 1); + BAR0_WI32(priv->fb_bar->gpuobj, 0x08, 0x40000000); + BAR0_WI32(priv->fb_bar->gpuobj, 0x0c, 0x00000000); + BAR0_WI32(priv->fb_bar->gpuobj, 0x10, 0x00000000); + BAR0_WI32(priv->fb_bar->gpuobj, 0x14, 0x00000000); + + /* Poke the relevant regs, and pray it works :) */ + nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12)); + nv_wr32(dev, NV50_PUNK_UNK1710, 0); + nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12) | + NV50_PUNK_BAR_CFG_BASE_VALID); + nv_wr32(dev, NV50_PUNK_BAR1_CTXDMA, (priv->fb_bar->instance >> 4) | + NV50_PUNK_BAR1_CTXDMA_VALID); + nv_wr32(dev, NV50_PUNK_BAR3_CTXDMA, (priv->pramin_bar->instance >> 4) | + NV50_PUNK_BAR3_CTXDMA_VALID); + + for (i = 0; i < 8; i++) + nv_wr32(dev, 0x1900 + (i*4), 0); + + /* Assume that praying isn't enough, check that we can re-read the + * entire fake channel back from the PRAMIN BAR */ + dev_priv->engine.instmem.prepare_access(dev, false); + for (i = 0; i < c_size; i += 4) { + if (nv_rd32(dev, NV_RAMIN + i) != nv_ri32(dev, i)) { + NV_ERROR(dev, "Error reading back PRAMIN at 0x%08x\n", + i); + dev_priv->engine.instmem.finish_access(dev); + return -EINVAL; + } + } + dev_priv->engine.instmem.finish_access(dev); + + nv_wr32(dev, NV50_PUNK_BAR0_PRAMIN, save_nv001700); + + /* 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; + NV_ERROR(dev, "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; + struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv; + struct nouveau_channel *chan = dev_priv->fifos[0]; + int i; + + NV_DEBUG(dev, "\n"); + + if (!priv) + return; + + /* Restore state from before init */ + for (i = 0x1700; i <= 0x1710; i += 4) + nv_wr32(dev, i, priv->save1700[(i - 0x1700) / 4]); + + nouveau_gpuobj_ref_del(dev, &priv->fb_bar); + nouveau_gpuobj_ref_del(dev, &priv->pramin_bar); + nouveau_gpuobj_ref_del(dev, &priv->pramin_pt); + + /* Destroy dummy channel */ + if (chan) { + for (i = 0; i < dev_priv->vm_vram_pt_nr; i++) { + nouveau_gpuobj_ref_del(dev, &chan->vm_vram_pt[i]); + dev_priv->vm_vram_pt[i] = NULL; + } + dev_priv->vm_vram_pt_nr = 0; + + 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; + kfree(chan); + } + + dev_priv->engine.instmem.priv = NULL; + kfree(priv); +} + +int +nv50_instmem_suspend(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_channel *chan = dev_priv->fifos[0]; + struct nouveau_gpuobj *ramin = chan->ramin->gpuobj; + int i; + + ramin->im_backing_suspend = vmalloc(ramin->im_pramin->size); + if (!ramin->im_backing_suspend) + return -ENOMEM; + + for (i = 0; i < ramin->im_pramin->size; i += 4) + ramin->im_backing_suspend[i/4] = nv_ri32(dev, i); + return 0; +} + +void +nv50_instmem_resume(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv; + struct nouveau_channel *chan = dev_priv->fifos[0]; + struct nouveau_gpuobj *ramin = chan->ramin->gpuobj; + int i; + + nv_wr32(dev, NV50_PUNK_BAR0_PRAMIN, (ramin->im_backing_start >> 16)); + for (i = 0; i < ramin->im_pramin->size; i += 4) + BAR0_WI32(ramin, i, ramin->im_backing_suspend[i/4]); + vfree(ramin->im_backing_suspend); + ramin->im_backing_suspend = NULL; + + /* Poke the relevant regs, and pray it works :) */ + nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12)); + nv_wr32(dev, NV50_PUNK_UNK1710, 0); + nv_wr32(dev, NV50_PUNK_BAR_CFG_BASE, (chan->ramin->instance >> 12) | + NV50_PUNK_BAR_CFG_BASE_VALID); + nv_wr32(dev, NV50_PUNK_BAR1_CTXDMA, (priv->fb_bar->instance >> 4) | + NV50_PUNK_BAR1_CTXDMA_VALID); + nv_wr32(dev, NV50_PUNK_BAR3_CTXDMA, (priv->pramin_bar->instance >> 4) | + NV50_PUNK_BAR3_CTXDMA_VALID); + + for (i = 0; i < 8; i++) + nv_wr32(dev, 0x1900 + (i*4), 0); +} + +int +nv50_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, + uint32_t *sz) +{ + int ret; + + if (gpuobj->im_backing) + return -EINVAL; + + *sz = (*sz + (NV50_INSTMEM_PAGE_SIZE-1)) & ~(NV50_INSTMEM_PAGE_SIZE-1); + if (*sz == 0) + return -EINVAL; + + ret = nouveau_bo_new(dev, NULL, *sz, 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 +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_bo_unpin(gpuobj->im_backing); + nouveau_bo_ref(NULL, &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; + struct 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; + + NV_DEBUG(dev, "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; + + NV_DEBUG(dev, "pramin=0x%llx, 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); + + dev_priv->engine.instmem.prepare_access(dev, true); + while (pte < pte_end) { + nv_wo32(dev, priv->pramin_pt->gpuobj, (pte + 0)/4, vram | 1); + nv_wo32(dev, priv->pramin_pt->gpuobj, (pte + 4)/4, 0x00000000); + + pte += 8; + vram += NV50_INSTMEM_PAGE_SIZE; + } + dev_priv->engine.instmem.finish_access(dev); + + nv_wr32(dev, 0x100c80, 0x00040001); + if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) { + NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (1)\n"); + NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80)); + return -EBUSY; + } + + nv_wr32(dev, 0x100c80, 0x00060001); + if (!nv_wait(0x100c80, 0x00000001, 0x00000000)) { + NV_ERROR(dev, "timeout: (0x100c80 & 1) == 0 (2)\n"); + NV_ERROR(dev, "0x100c80 = 0x%08x\n", nv_rd32(dev, 0x100c80)); + return -EBUSY; + } + + 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; + struct 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; + + dev_priv->engine.instmem.prepare_access(dev, true); + while (pte < pte_end) { + nv_wo32(dev, priv->pramin_pt->gpuobj, (pte + 0)/4, 0x00000009); + nv_wo32(dev, priv->pramin_pt->gpuobj, (pte + 4)/4, 0x00000000); + pte += 8; + } + dev_priv->engine.instmem.finish_access(dev); + + gpuobj->im_bound = 0; + return 0; +} + +void +nv50_instmem_prepare_access(struct drm_device *dev, bool write) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv; + + priv->last_access_wr = write; +} + +void +nv50_instmem_finish_access(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_instmem_priv *priv = dev_priv->engine.instmem.priv; + + if (priv->last_access_wr) { + nv_wr32(dev, 0x070000, 0x00000001); + if (!nv_wait(0x070000, 0x00000001, 0x00000000)) + NV_ERROR(dev, "PRAMIN flush timeout\n"); + } +} + |