1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright (C) 2009-2010 Francisco Jerez. 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * All Rights Reserved. 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * a copy of this software and associated documentation files (the 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * "Software"), to deal in the Software without restriction, including 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * without limitation the rights to use, copy, modify, merge, publish, 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * distribute, sublicense, and/or sell copies of the Software, and to 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * permit persons to whom the Software is furnished to do so, subject to 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the following conditions: 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * next paragraph) shall be included in all copies or substantial 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * portions of the Software. 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "nouveau_driver.h" 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "nouveau_context.h" 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Returns a pointer to a chunk of 'size' bytes long GART memory. 'bo' 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * and 'offset' will point to the returned memory. 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid * 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgnouveau_get_scratch(struct gl_context *ctx, unsigned size, 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct nouveau_bo **bo, unsigned *offset) 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct nouveau_client *client = context_client(ctx); 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct nouveau_scratch_state *scratch = 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org &to_nouveau_context(ctx)->scratch; 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void *buf; 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (scratch->buf && size <= NOUVEAU_SCRATCH_SIZE - scratch->offset) { 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org nouveau_bo_ref(scratch->bo[scratch->index], bo); 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org buf = scratch->buf + scratch->offset; 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org *offset = scratch->offset; 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org scratch->offset += size; 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else if (size <= NOUVEAU_SCRATCH_SIZE) { 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org scratch->index = (scratch->index + 1) % NOUVEAU_SCRATCH_COUNT; 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org nouveau_bo_ref(scratch->bo[scratch->index], bo); 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org nouveau_bo_map(*bo, NOUVEAU_BO_WR, client); 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org buf = scratch->buf = (*bo)->map; 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org *offset = 0; 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org scratch->offset = size; 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_GART | 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org NOUVEAU_BO_MAP, 0, size, NULL, bo); 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org nouveau_bo_map(*bo, NOUVEAU_BO_WR, client); 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org buf = (*bo)->map; 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org *offset = 0; 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return buf; 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgnouveau_scratch_init(struct gl_context *ctx) 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct nouveau_scratch_state *scratch = 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org &to_nouveau_context(ctx)->scratch; 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int ret, i; 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < NOUVEAU_SCRATCH_COUNT; i++) { 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ret = nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_GART | 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org NOUVEAU_BO_MAP, 0, NOUVEAU_SCRATCH_SIZE, 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org NULL, &scratch->bo[i]); 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(!ret); 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgnouveau_scratch_destroy(struct gl_context *ctx) 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct nouveau_scratch_state *scratch = 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org &to_nouveau_context(ctx)->scratch; 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int i; 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < NOUVEAU_SCRATCH_COUNT; i++) 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org nouveau_bo_ref(NULL, &scratch->bo[i]); 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 98