| /* |
| * Copyright 2010 Nouveau Project |
| * |
| * 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 AUTHORS 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 <stdio.h> |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <assert.h> |
| |
| #include "nouveau_private.h" |
| |
| static uint32_t |
| nouveau_reloc_calc(struct drm_nouveau_gem_pushbuf_bo *pbbo, |
| struct drm_nouveau_gem_pushbuf_reloc *r) |
| { |
| uint32_t push = 0; |
| |
| if (r->flags & NOUVEAU_GEM_RELOC_LOW) |
| push = (pbbo->presumed.offset + r->data); |
| else |
| if (r->flags & NOUVEAU_GEM_RELOC_HIGH) |
| push = (pbbo->presumed.offset + r->data) >> 32; |
| else |
| push = r->data; |
| |
| if (r->flags & NOUVEAU_GEM_RELOC_OR) { |
| if (pbbo->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) |
| push |= r->vor; |
| else |
| push |= r->tor; |
| } |
| |
| return push; |
| } |
| |
| int |
| nouveau_reloc_emit(struct nouveau_channel *chan, struct nouveau_bo *reloc_bo, |
| uint32_t reloc_offset, uint32_t *reloc_ptr, |
| struct nouveau_bo *bo, uint32_t data, uint32_t data2, |
| uint32_t flags, uint32_t vor, uint32_t tor) |
| { |
| struct nouveau_pushbuf_priv *nvpb = &nouveau_channel(chan)->pb; |
| struct nouveau_bo_priv *nvbo = nouveau_bo(bo); |
| struct drm_nouveau_gem_pushbuf_reloc *r; |
| struct drm_nouveau_gem_pushbuf_bo *pbbo, *rpbbo; |
| uint32_t domains = 0; |
| |
| if (nvpb->nr_relocs >= NOUVEAU_GEM_MAX_RELOCS) { |
| fprintf(stderr, "too many relocs!!\n"); |
| return -ENOMEM; |
| } |
| |
| if (nvbo->user && (flags & NOUVEAU_BO_WR)) { |
| fprintf(stderr, "write to user buffer!!\n"); |
| return -EINVAL; |
| } |
| |
| /* We're about to reloc a user buffer, better make sure we don't cause |
| * a double migration. |
| */ |
| if (!(nvbo->flags & (NOUVEAU_BO_GART | NOUVEAU_BO_VRAM))) |
| nvbo->flags |= (flags & (NOUVEAU_BO_GART | NOUVEAU_BO_VRAM)); |
| |
| /* add buffer to validation list */ |
| pbbo = nouveau_bo_emit_buffer(chan, bo); |
| if (!pbbo) { |
| fprintf(stderr, "buffer emit fail :(\n"); |
| return -ENOMEM; |
| } |
| nouveau_bo(bo)->pending_refcnt++; |
| |
| if (flags & (NOUVEAU_BO_VRAM | NOUVEAU_BO_GART)) { |
| if (flags & NOUVEAU_BO_VRAM) |
| domains |= NOUVEAU_GEM_DOMAIN_VRAM; |
| if (flags & NOUVEAU_BO_GART) |
| domains |= NOUVEAU_GEM_DOMAIN_GART; |
| } else |
| domains |= nvbo->domain; |
| |
| if (!(pbbo->valid_domains & domains)) { |
| fprintf(stderr, "no valid domains remain!\n"); |
| return -EINVAL; |
| } |
| pbbo->valid_domains &= domains; |
| |
| assert(flags & NOUVEAU_BO_RDWR); |
| if (flags & NOUVEAU_BO_RD) { |
| pbbo->read_domains |= domains; |
| } |
| if (flags & NOUVEAU_BO_WR) { |
| pbbo->write_domains |= domains; |
| nvbo->write_marker = 1; |
| } |
| |
| /* nvc0 gallium driver uses reloc_emit() with NULL target buffer |
| * to inform bufmgr of a buffer's use - however, we need something |
| * to track, so create a reloc for now, and hope it never triggers |
| * (it shouldn't, constant virtual address..).. |
| */ |
| if (!reloc_bo) { |
| reloc_bo = nvpb->buffer[nvpb->current]; |
| reloc_offset = 0; |
| reloc_ptr = NULL; |
| } |
| |
| /* add reloc target bo to validation list, and create the reloc */ |
| rpbbo = nouveau_bo_emit_buffer(chan, reloc_bo); |
| if (!rpbbo) |
| return -ENOMEM; |
| nouveau_bo(reloc_bo)->pending_refcnt++; |
| |
| r = nvpb->relocs + nvpb->nr_relocs++; |
| r->reloc_bo_index = rpbbo - nvpb->buffers; |
| r->reloc_bo_offset = reloc_offset; |
| r->bo_index = pbbo - nvpb->buffers; |
| r->flags = 0; |
| if (flags & NOUVEAU_BO_LOW) |
| r->flags |= NOUVEAU_GEM_RELOC_LOW; |
| if (flags & NOUVEAU_BO_HIGH) |
| r->flags |= NOUVEAU_GEM_RELOC_HIGH; |
| if (flags & NOUVEAU_BO_OR) |
| r->flags |= NOUVEAU_GEM_RELOC_OR; |
| r->data = data; |
| r->vor = vor; |
| r->tor = tor; |
| |
| if (reloc_ptr) { |
| if (flags & NOUVEAU_BO_DUMMY) |
| *reloc_ptr = 0; |
| else |
| *reloc_ptr = nouveau_reloc_calc(pbbo, r); |
| } |
| |
| return 0; |
| } |
| |