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/**
* Userspace PCI Endpoint Test Module
*
* Copyright (C) 2017 Texas Instruments
* Author: Kishon Vijay Abraham I <kishon@ti.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 of
* the 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, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <linux/pcitest.h>
#define BILLION 1E9
static char *result[] = { "NOT OKAY", "OKAY" };
static char *irq[] = { "LEGACY", "MSI", "MSI-X" };
struct pci_test {
char *device;
char barnum;
bool legacyirq;
unsigned int msinum;
unsigned int msixnum;
int irqtype;
bool set_irqtype;
bool get_irqtype;
bool read;
bool write;
bool copy;
unsigned long size;
};
static void run_test(struct pci_test *test)
{
long ret;
int fd;
fd = open(test->device, O_RDWR);
if (fd < 0) {
perror("can't open PCI Endpoint Test device");
return;
}
if (test->barnum >= 0 && test->barnum <= 5) {
ret = ioctl(fd, PCITEST_BAR, test->barnum);
fprintf(stdout, "BAR%d:\t\t", test->barnum);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
if (test->set_irqtype) {
ret = ioctl(fd, PCITEST_SET_IRQTYPE, test->irqtype);
fprintf(stdout, "SET IRQ TYPE TO %s:\t\t", irq[test->irqtype]);
if (ret < 0)
fprintf(stdout, "FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
if (test->get_irqtype) {
ret = ioctl(fd, PCITEST_GET_IRQTYPE);
fprintf(stdout, "GET IRQ TYPE:\t\t");
if (ret < 0)
fprintf(stdout, "FAILED\n");
else
fprintf(stdout, "%s\n", irq[ret]);
}
if (test->legacyirq) {
ret = ioctl(fd, PCITEST_LEGACY_IRQ, 0);
fprintf(stdout, "LEGACY IRQ:\t");
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
if (test->msinum > 0 && test->msinum <= 32) {
ret = ioctl(fd, PCITEST_MSI, test->msinum);
fprintf(stdout, "MSI%d:\t\t", test->msinum);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
if (test->msixnum > 0 && test->msixnum <= 2048) {
ret = ioctl(fd, PCITEST_MSIX, test->msixnum);
fprintf(stdout, "MSI-X%d:\t\t", test->msixnum);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
if (test->write) {
ret = ioctl(fd, PCITEST_WRITE, test->size);
fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
if (test->read) {
ret = ioctl(fd, PCITEST_READ, test->size);
fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
if (test->copy) {
ret = ioctl(fd, PCITEST_COPY, test->size);
fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
else
fprintf(stdout, "%s\n", result[ret]);
}
fflush(stdout);
}
int main(int argc, char **argv)
{
int c;
struct pci_test *test;
test = calloc(1, sizeof(*test));
if (!test) {
perror("Fail to allocate memory for pci_test\n");
return -ENOMEM;
}
/* since '0' is a valid BAR number, initialize it to -1 */
test->barnum = -1;
/* set default size as 100KB */
test->size = 0x19000;
/* set default endpoint device */
test->device = "/dev/pci-endpoint-test.0";
while ((c = getopt(argc, argv, "D:b:m:x:i:Ilrwcs:")) != EOF)
switch (c) {
case 'D':
test->device = optarg;
continue;
case 'b':
test->barnum = atoi(optarg);
if (test->barnum < 0 || test->barnum > 5)
goto usage;
continue;
case 'l':
test->legacyirq = true;
continue;
case 'm':
test->msinum = atoi(optarg);
if (test->msinum < 1 || test->msinum > 32)
goto usage;
continue;
case 'x':
test->msixnum = atoi(optarg);
if (test->msixnum < 1 || test->msixnum > 2048)
goto usage;
continue;
case 'i':
test->irqtype = atoi(optarg);
if (test->irqtype < 0 || test->irqtype > 2)
goto usage;
test->set_irqtype = true;
continue;
case 'I':
test->get_irqtype = true;
continue;
case 'r':
test->read = true;
continue;
case 'w':
test->write = true;
continue;
case 'c':
test->copy = true;
continue;
case 's':
test->size = strtoul(optarg, NULL, 0);
continue;
case '?':
case 'h':
default:
usage:
fprintf(stderr,
"usage: %s [options]\n"
"Options:\n"
"\t-D <dev> PCI endpoint test device {default: /dev/pci-endpoint-test.0}\n"
"\t-b <bar num> BAR test (bar number between 0..5)\n"
"\t-m <msi num> MSI test (msi number between 1..32)\n"
"\t-x <msix num> \tMSI-X test (msix number between 1..2048)\n"
"\t-i <irq type> \tSet IRQ type (0 - Legacy, 1 - MSI, 2 - MSI-X)\n"
"\t-I Get current IRQ type configured\n"
"\t-l Legacy IRQ test\n"
"\t-r Read buffer test\n"
"\t-w Write buffer test\n"
"\t-c Copy buffer test\n"
"\t-s <size> Size of buffer {default: 100KB}\n",
argv[0]);
return -EINVAL;
}
run_test(test);
return 0;
}
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