/*
 * Copyright © 2009 Jerome Glisse <glisse@freedesktop.org>
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "xf86drm.h"
#include "radeon_bo_gem.h"
#include "radeon_cs_gem.h"
#include "r600_winsys.h"
#include "radeon.h"

int radeon_init(struct radeon *radeon)
{
    int r;

    memset(radeon, 0, sizeof(*radeon));
    radeon->fd = drmOpen("radeon", NULL);
    if (radeon->fd < 0) {
        fprintf(stderr, "Failed to open the card fd (%d)\n", radeon->fd);
        return radeon->fd;
    }
    radeon->csm = radeon_cs_manager_gem_ctor(radeon->fd);
    if (radeon->csm == NULL) {
        fprintf(stderr, "Failed to create CS manager\n");
        return -1;
    }
    radeon->bom = radeon_bo_manager_gem_ctor(radeon->fd);
    if (radeon->bom == NULL) {
        fprintf(stderr, "Failed to create BO manager\n");
        return -1;
    }
    r = radeon_mode_configure(radeon);
    if (r) {
        return r;
    }
    return 0;
}

void radeon_fini(struct radeon *radeon)
{
    radeon_mode_cleanup(radeon);
    radeon_bo_manager_gem_dtor(radeon->bom);
    radeon_cs_manager_gem_dtor(radeon->csm);
    drmClose(radeon->fd);
}

void memset_bo(struct radeon_bo *bo, u32 value)
{
    u32 *ptr;
    int r;

    r = radeon_bo_map(bo, 1);
    if (r) {
        fprintf(stderr, "Failed to map buffer\n");
        perror(NULL);
        return;
    }
    ptr = (u32*)bo->ptr;
    for (r = 0; r < (bo->size / 4); r++)
        ptr[r] = value;
    radeon_bo_unmap(bo);
}

void memcpy_bo(struct radeon_bo *bo, u32 *src, u32 size)
{
    u32 *ptr, tmp;
    int r;

    r = radeon_bo_map(bo, 1);
    if (r) {
        fprintf(stderr, "Failed to map buffer\n");
        perror(NULL);
        return;
    }
    ptr = (u32*)bo->ptr;
    for (r = 0; r < size; r++)
        ptr[r] = src[r];
    for (r = 0; r < size; r++)
        ptr[r] = src[r];
    for (r = 0, tmp = 0; r < size; r++)
        tmp += ptr[r];
    radeon_bo_unmap(bo);
}

int memcmp_bo(struct radeon_bo *s1, struct radeon_bo *s2, u32 size)
{
    u32 *s1ptr;
    u32 *s2ptr;
    int r;

    r = radeon_bo_map(s1, 1);
    if (r) {
        fprintf(stderr, "Failed to map buffer\n");
        perror(NULL);
        return -1;
    }
    r = radeon_bo_map(s2, 1);
    if (r) {
        fprintf(stderr, "Failed to map buffer\n");
        perror(NULL);
        return -1;
    }
    s1ptr = (u32*)s1->ptr;
    s2ptr = (u32*)s2->ptr;
    for (r = 0; r < (size / 4); r++)
        if (s1ptr[r] != s2ptr[r])
            return -1;
    radeon_bo_unmap(s2);
    radeon_bo_unmap(s1);
    return 0;
}

void memsetrandom_bo(struct radeon_bo *bo)
{
    u32 *ptr;
    int r;
    double tmp;

    r = radeon_bo_map(bo, 1);
    if (r) {
        fprintf(stderr, "Failed to map buffer\n");
        perror(NULL);
        return;
    }
    ptr = (u32*)bo->ptr;
    for (r = 0; r < (bo->size / 4); r++) {
        tmp = ((double)rand()) / ((double)RAND_MAX);
        ptr[r] = (u32)(tmp * 0xFFFFFF);
    }
    radeon_bo_unmap(bo);
}