agp/user_space/user_tagp.c

/*
 *
 *   Copyright (c) International Business Machines  Corp., 2001
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
/*
 * This is the main of your user space test program,
 * which will open the correct kernel module, find the
 * file descriptor value and use that value to make
 * ioctl calls to the system
 *
 * Use the ki_generic and other ki_testname functions
 * to abstract the calls from the main
 *
 * author: Kai Zhao
 * date:   08/25/2003
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/kernel.h>
#include <linux/errno.h>

#include "user_tagp.h"
#include "../kernel_space/tagp.h"

static int tagp_fd = -1;		/* file descriptor */

int tagpopen() {

    dev_t devt;
	struct stat     st;
    int    rc = 0;

    devt = makedev(TAGP_MAJOR, 0);

    if (rc) {
        if (errno == ENOENT) {
            /* dev node does not exist. */
            rc = mkdir(DEVICE_NAME, (S_IFDIR | S_IRWXU |
                                                S_IRGRP | S_IXGRP |
                                                S_IROTH | S_IXOTH));
        } else {
            printf("ERROR: Problem with Base dev directory.  Error code from stat() is %d\n\n", errno);
        }

    } else {
        if (!(st.st_mode & S_IFDIR)) {
            rc = unlink(DEVICE_NAME);
            if (!rc) {
                rc = mkdir(DEVICE_NAME, (S_IFDIR | S_IRWXU |
                                                S_IRGRP | S_IXGRP |
                                                S_IROTH | S_IXOTH));
            }
        }
    }


    /*
     * Check for the /dev/tbase node, and create if it does not
     * exist.
     */
    rc = stat(DEVICE_NAME, &st);
    if (rc) {
        if (errno == ENOENT) {
            /* dev node does not exist */
            rc = mknod(DEVICE_NAME, (S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP), devt);
        } else {
            printf("ERROR:Problem with tbase device node directory.  Error code form stat() is %d\n\n", errno);
        }

    } else {
        /*
         * /dev/tbase CHR device exists.  Check to make sure it is for a
         * block device and that it has the right major and minor.
         */
        if ((!(st.st_mode & S_IFCHR)) ||
             (st.st_rdev != devt)) {

            /* Recreate the dev node. */
            rc = unlink(DEVICE_NAME);
            if (!rc) {
                rc = mknod(DEVICE_NAME, (S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP), devt);
            }
        }
    }

    tagp_fd = open(DEVICE_NAME, O_RDWR);

    if (tagp_fd < 0) {
        printf("ERROR: Open of device %s failed %d errno = %d\n", DEVICE_NAME,tagp_fd, errno);
        return errno;
    }
    else {
        printf("Device opened successfully \n");
        return 0;
    }

}


int
tagpclose() {

	if (tagp_fd != -1) {
		close (tagp_fd);
		tagp_fd = -1;
	}

	return 0;
}

int agpgart_io_test()
{
	int tagp_fd = 0;
	char read_buf[BUFFER_LEN];

	if ((tagp_fd = open("/dev/agpgart", O_RDWR)) < 0) {
                printf("Open /dev/agpgart failed \n");
		return -1;
        }

	close(tagp_fd);

	return 0;
}


int main() {
	int rc;

	if(agpgart_io_test())
		printf("Test agpgart io failed\n");
	else
		printf("Test agpgart io success\n");

	/* open the module */
	rc = tagpopen();
	if (rc ) {
		printf("Test AGP Driver may not be loaded\n");
		exit(1);
	}

	/* make test calls for pci_find_device*/
	if(ki_generic(tagp_fd, TEST_PCI_FIND_DEV))
		printf("Success: Expected failure for pci_find_dev test\n");
	else
		printf("Fail on pci_find_dev test\n");

	/* make test calls for agp_backend_acquier */
	if(ki_generic(tagp_fd, TEST_BACKEND_ACQUIRE))
		printf("Fail on agp_backend_acquier\n");
	else
		printf("Success on agp_backend_acquier\n");

	/* make test calls for agp_backend_release */
	if(ki_generic(tagp_fd, TEST_BACKEND_RELEASE))
		printf("Fail on agp_backend_release\n");
	else
		printf("Success on agp_backend_release\n");

	/* make test calls for agp_alloc_bridge */
	if(ki_generic(tagp_fd, TEST_ALLOC_BRIDGE))
		printf("Fail on agp_alloc_bridge \n");
	else
		printf("Success on agp_alloc_bridge\n");

	/* make test calls for and agp_put_bridge */
	if(ki_generic(tagp_fd, TEST_PUT_BRIDGE))
		printf("Fail on agp_put_bridge\n");
	else
		printf("Success on agp_put_bridge\n");

	/* make test calls for agp_create_memory and agp_free_memory */
	if(ki_generic(tagp_fd, TEST_CREATE_AND_FREE_MEMORY))
		printf("Fail on agp_create_memory \n");
	else
		printf("Success on agp_create_memory\n");
/*
	if(ki_generic(tagp_fd, TEST_FREE_MEMORY))
		printf("Fail on agp_free_memory\n");
	else
		printf("Success on agp_free_memory\n");
*/	///////////////////////////////////////////////////////////////////////
	/* make test calls for agp_num_entries */
	if(ki_generic(tagp_fd, TEST_NUM_ENTRIES))
		printf("Fail on agp_num_entries\n");
	else
		printf("Success on agp_num_entries\n");

	/* make test calls for agp_copy_info */
	if(ki_generic(tagp_fd, TEST_COPY_INFO))
		printf("Fail on agp_copy_info\n");
	else
		printf("Success on agp_copy_info\n");

	/* make test calls for agp_alloc_memory */
//	if(ki_generic(tagp_fd, TEST_ALLOC_MEMORY_AND_BAND_UNBAND))
//		printf("Fail on agp_alloc_memory_and_band_unband\n");
//	else
//		printf("Success on agp_alloc_memory_and_band_unband\n");

	/* make test calls for agp_get_version */
	if(ki_generic(tagp_fd, TEST_GET_VERSION))
		printf("Fail on agp_get_version\n");
	else
		printf("Success on agp_get_version\n");

	/* make test calls for agp_generic_enable */
	if(ki_generic(tagp_fd, TEST_GENERIC_ENABLE))
		printf("Fail on agp_generic_enable\n");
	else
		printf("Success on agp_generic_enable\n");

	/* make test calls for agp_generic_create_gatt_table */
	if(ki_generic(tagp_fd, TEST_GENERIC_CREATE_GATT_TABLE))
		printf("Fail on agp_generic_create_gatt_table\n");
	else
		printf("Success on agp_generic_create_gatt_table\n");


	/* make test calls for agp_generic_free_gatt_table */
	if(ki_generic(tagp_fd, TEST_GENERIC_FREE_GATT_TABLE))
		printf("Fail on agp_generic_free_gatt_table\n");
	else
		printf("Success on agp_generic_free_gatt_table\n");


	/* make test calls for agp_generic_insert_memory */
	if(ki_generic(tagp_fd, TEST_GENERIC_INSERT_MEMROY))
		printf("Fail on agp_generic_insert_memory\n");
	else
		printf("Success on agp_generic_insert_memory\n");

	/* make test calls for agp_generic_alloc_by_type */
	if(ki_generic(tagp_fd, TEST_GENERIC_ALLOC_BY_TYPE))
		printf("Fail on agp_generic_alloc_by_type\n");
	else
		printf("Success on agp_generic_alloc_by_type\n");

	/* make test calls for agp_generic_alloc_page */
	if(ki_generic(tagp_fd, TEST_GENERIC_ALLOC_PAGE))
		printf("Fail on agp_generic_alloc_page\n");
	else
		printf("Success on agp_generic_alloc_page\n");

	/* make test calls for agp_generic_destory_page */
	if(ki_generic(tagp_fd, TEST_GENERIC_ALLOC_PAGE))
		printf("Fail on agp_generic_destory_page\n");
	else
		printf("Success on agp_generic_destory_page\n");

	/* make test calls for agp_enable */
	if(ki_generic(tagp_fd, TEST_ENABLE))
		printf("Fail on agp_enable\n");
	else
		printf("Success on agp_enable\n");

	/* make test calls for agp_global_cache_flush */
	if(ki_generic(tagp_fd, TEST_GLOBAL_CACHE_FLUSH))
		printf("Fail on agp_global_cache_flush\n");
	else
		printf("Success on agp_gloabl_cache_flush\n");

	/* make test calls for agp_generic_mask_memory */
	if(ki_generic(tagp_fd, TEST_GENERIC_MASK_MEMORY))
		printf("Fail on agp_generic_mask_memory\n");
	else
		printf("Success on agp_generic_mask_memory\n");

	/* close the module */
	rc = tagpclose();
	if (rc ) {
                printf("Test AGP Driver may not be closed\n");
                exit(1);
        }

        return 0;
}