342 lines
9.7 KiB
C
342 lines
9.7 KiB
C
/*
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* Copyright 2008 Jerome Glisse.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Jerome Glisse <glisse@freedesktop.org>
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*/
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#include "drmP.h"
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#include "radeon_drm.h"
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#include "radeon_reg.h"
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#include "radeon.h"
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void r100_cs_dump_packet(struct radeon_cs_parser *p,
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struct radeon_cs_packet *pkt);
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int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
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{
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struct drm_device *ddev = p->rdev->ddev;
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struct radeon_cs_chunk *chunk;
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unsigned i, j;
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bool duplicate;
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if (p->chunk_relocs_idx == -1) {
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return 0;
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}
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chunk = &p->chunks[p->chunk_relocs_idx];
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/* FIXME: we assume that each relocs use 4 dwords */
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p->nrelocs = chunk->length_dw / 4;
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p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL);
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if (p->relocs_ptr == NULL) {
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return -ENOMEM;
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}
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p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
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if (p->relocs == NULL) {
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return -ENOMEM;
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}
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for (i = 0; i < p->nrelocs; i++) {
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struct drm_radeon_cs_reloc *r;
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duplicate = false;
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r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4];
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for (j = 0; j < p->nrelocs; j++) {
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if (r->handle == p->relocs[j].handle) {
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p->relocs_ptr[i] = &p->relocs[j];
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duplicate = true;
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break;
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}
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}
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if (!duplicate) {
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p->relocs[i].gobj = drm_gem_object_lookup(ddev,
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p->filp,
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r->handle);
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if (p->relocs[i].gobj == NULL) {
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DRM_ERROR("gem object lookup failed 0x%x\n",
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r->handle);
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return -EINVAL;
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}
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p->relocs_ptr[i] = &p->relocs[i];
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p->relocs[i].robj = p->relocs[i].gobj->driver_private;
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p->relocs[i].lobj.robj = p->relocs[i].robj;
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p->relocs[i].lobj.rdomain = r->read_domains;
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p->relocs[i].lobj.wdomain = r->write_domain;
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p->relocs[i].handle = r->handle;
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p->relocs[i].flags = r->flags;
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INIT_LIST_HEAD(&p->relocs[i].lobj.list);
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radeon_object_list_add_object(&p->relocs[i].lobj,
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&p->validated);
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}
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}
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return radeon_object_list_validate(&p->validated, p->ib->fence);
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}
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int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
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{
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struct drm_radeon_cs *cs = data;
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uint64_t *chunk_array_ptr;
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unsigned size, i;
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if (!cs->num_chunks) {
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return 0;
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}
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/* get chunks */
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INIT_LIST_HEAD(&p->validated);
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p->idx = 0;
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p->chunk_ib_idx = -1;
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p->chunk_relocs_idx = -1;
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p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL);
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if (p->chunks_array == NULL) {
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return -ENOMEM;
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}
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chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks);
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if (DRM_COPY_FROM_USER(p->chunks_array, chunk_array_ptr,
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sizeof(uint64_t)*cs->num_chunks)) {
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return -EFAULT;
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}
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p->nchunks = cs->num_chunks;
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p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL);
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if (p->chunks == NULL) {
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return -ENOMEM;
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}
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for (i = 0; i < p->nchunks; i++) {
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struct drm_radeon_cs_chunk __user **chunk_ptr = NULL;
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struct drm_radeon_cs_chunk user_chunk;
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uint32_t __user *cdata;
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chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i];
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if (DRM_COPY_FROM_USER(&user_chunk, chunk_ptr,
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sizeof(struct drm_radeon_cs_chunk))) {
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return -EFAULT;
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}
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p->chunks[i].length_dw = user_chunk.length_dw;
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p->chunks[i].kdata = NULL;
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p->chunks[i].chunk_id = user_chunk.chunk_id;
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if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) {
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p->chunk_relocs_idx = i;
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}
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if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) {
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p->chunk_ib_idx = i;
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/* zero length IB isn't useful */
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if (p->chunks[i].length_dw == 0)
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return -EINVAL;
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}
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p->chunks[i].length_dw = user_chunk.length_dw;
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p->chunks[i].user_ptr = (void __user *)(unsigned long)user_chunk.chunk_data;
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cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data;
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if (p->chunks[i].chunk_id != RADEON_CHUNK_ID_IB) {
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size = p->chunks[i].length_dw * sizeof(uint32_t);
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p->chunks[i].kdata = kmalloc(size, GFP_KERNEL);
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if (p->chunks[i].kdata == NULL) {
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return -ENOMEM;
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}
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if (DRM_COPY_FROM_USER(p->chunks[i].kdata,
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p->chunks[i].user_ptr, size)) {
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return -EFAULT;
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}
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} else {
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p->chunks[i].kpage[0] = kmalloc(PAGE_SIZE, GFP_KERNEL);
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p->chunks[i].kpage[1] = kmalloc(PAGE_SIZE, GFP_KERNEL);
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if (p->chunks[i].kpage[0] == NULL || p->chunks[i].kpage[1] == NULL) {
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kfree(p->chunks[i].kpage[0]);
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kfree(p->chunks[i].kpage[1]);
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return -ENOMEM;
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}
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p->chunks[i].kpage_idx[0] = -1;
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p->chunks[i].kpage_idx[1] = -1;
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p->chunks[i].last_copied_page = -1;
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p->chunks[i].last_page_index = ((p->chunks[i].length_dw * 4) - 1) / PAGE_SIZE;
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}
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}
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if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) {
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DRM_ERROR("cs IB too big: %d\n",
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p->chunks[p->chunk_ib_idx].length_dw);
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return -EINVAL;
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}
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return 0;
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}
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/**
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* cs_parser_fini() - clean parser states
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* @parser: parser structure holding parsing context.
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* @error: error number
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*
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* If error is set than unvalidate buffer, otherwise just free memory
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* used by parsing context.
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**/
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static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
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{
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unsigned i;
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if (error) {
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radeon_object_list_unvalidate(&parser->validated);
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} else {
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radeon_object_list_clean(&parser->validated);
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}
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for (i = 0; i < parser->nrelocs; i++) {
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if (parser->relocs[i].gobj) {
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mutex_lock(&parser->rdev->ddev->struct_mutex);
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drm_gem_object_unreference(parser->relocs[i].gobj);
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mutex_unlock(&parser->rdev->ddev->struct_mutex);
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}
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}
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kfree(parser->track);
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kfree(parser->relocs);
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kfree(parser->relocs_ptr);
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for (i = 0; i < parser->nchunks; i++) {
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kfree(parser->chunks[i].kdata);
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kfree(parser->chunks[i].kpage[0]);
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kfree(parser->chunks[i].kpage[1]);
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}
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kfree(parser->chunks);
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kfree(parser->chunks_array);
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radeon_ib_free(parser->rdev, &parser->ib);
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}
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int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
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{
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struct radeon_device *rdev = dev->dev_private;
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struct radeon_cs_parser parser;
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struct radeon_cs_chunk *ib_chunk;
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int r;
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mutex_lock(&rdev->cs_mutex);
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if (rdev->gpu_lockup) {
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mutex_unlock(&rdev->cs_mutex);
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return -EINVAL;
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}
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/* initialize parser */
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memset(&parser, 0, sizeof(struct radeon_cs_parser));
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parser.filp = filp;
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parser.rdev = rdev;
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r = radeon_cs_parser_init(&parser, data);
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if (r) {
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DRM_ERROR("Failed to initialize parser !\n");
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radeon_cs_parser_fini(&parser, r);
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mutex_unlock(&rdev->cs_mutex);
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return r;
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}
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r = radeon_ib_get(rdev, &parser.ib);
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if (r) {
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DRM_ERROR("Failed to get ib !\n");
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radeon_cs_parser_fini(&parser, r);
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mutex_unlock(&rdev->cs_mutex);
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return r;
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}
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r = radeon_cs_parser_relocs(&parser);
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if (r) {
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DRM_ERROR("Failed to parse relocation !\n");
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radeon_cs_parser_fini(&parser, r);
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mutex_unlock(&rdev->cs_mutex);
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return r;
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}
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/* Copy the packet into the IB, the parser will read from the
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* input memory (cached) and write to the IB (which can be
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* uncached). */
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ib_chunk = &parser.chunks[parser.chunk_ib_idx];
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parser.ib->length_dw = ib_chunk->length_dw;
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r = radeon_cs_parse(&parser);
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if (r || parser.parser_error) {
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DRM_ERROR("Invalid command stream !\n");
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radeon_cs_parser_fini(&parser, r);
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mutex_unlock(&rdev->cs_mutex);
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return r;
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}
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r = radeon_cs_finish_pages(&parser);
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if (r) {
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DRM_ERROR("Invalid command stream !\n");
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radeon_cs_parser_fini(&parser, r);
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mutex_unlock(&rdev->cs_mutex);
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return r;
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}
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r = radeon_ib_schedule(rdev, parser.ib);
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if (r) {
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DRM_ERROR("Faild to schedule IB !\n");
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}
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radeon_cs_parser_fini(&parser, r);
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mutex_unlock(&rdev->cs_mutex);
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return r;
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}
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int radeon_cs_finish_pages(struct radeon_cs_parser *p)
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{
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struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
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int i;
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int size = PAGE_SIZE;
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for (i = ibc->last_copied_page + 1; i <= ibc->last_page_index; i++) {
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if (i == ibc->last_page_index) {
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size = (ibc->length_dw * 4) % PAGE_SIZE;
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if (size == 0)
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size = PAGE_SIZE;
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}
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if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)),
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ibc->user_ptr + (i * PAGE_SIZE),
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size))
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return -EFAULT;
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}
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return 0;
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}
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int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx)
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{
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int new_page;
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struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
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int i;
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int size = PAGE_SIZE;
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for (i = ibc->last_copied_page + 1; i < pg_idx; i++) {
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if (DRM_COPY_FROM_USER(p->ib->ptr + (i * (PAGE_SIZE/4)),
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ibc->user_ptr + (i * PAGE_SIZE),
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PAGE_SIZE)) {
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p->parser_error = -EFAULT;
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return 0;
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}
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}
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new_page = ibc->kpage_idx[0] < ibc->kpage_idx[1] ? 0 : 1;
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if (pg_idx == ibc->last_page_index) {
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size = (ibc->length_dw * 4) % PAGE_SIZE;
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if (size == 0)
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size = PAGE_SIZE;
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}
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if (DRM_COPY_FROM_USER(ibc->kpage[new_page],
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ibc->user_ptr + (pg_idx * PAGE_SIZE),
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size)) {
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p->parser_error = -EFAULT;
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return 0;
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}
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/* copy to IB here */
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memcpy((void *)(p->ib->ptr+(pg_idx*(PAGE_SIZE/4))), ibc->kpage[new_page], size);
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ibc->last_copied_page = pg_idx;
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ibc->kpage_idx[new_page] = pg_idx;
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return new_page;
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}
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