Add a userspace tool to invoke the ioctls exposed by the PCI endpoint test driver to perform various PCI tests. Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> --- tools/pci/pcitest.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 tools/pci/pcitest.c diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c new file mode 100644 index 000000000000..ad54a58d7dda --- /dev/null +++ b/tools/pci/pcitest.c @@ -0,0 +1,186 @@ +/** + * Userspace PCI Endpoint Test Module + * + * Copyright (C) 2017 Texas Instruments + * Author: Kishon Vijay Abraham I <kishon@xxxxxx> + * + * 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 <time.h> +#include <unistd.h> + +#include <linux/pcitest.h> + +#define BILLION 1E9 + +static char *result[] = { "NOT OKAY", "OKAY" }; + +struct pci_test { + char *device; + char barnum; + bool legacyirq; + unsigned int msinum; + bool read; + bool write; + bool copy; + unsigned long size; +}; + +static int run_test(struct pci_test *test) +{ + long ret; + int fd; + struct timespec start, end; + double time; + + fd = open(test->device, O_RDWR); + if (fd < 0) { + perror("can't open PCI Endpoint Test device"); + return fd; + } + + 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->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->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:lrwcs:")) != 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 '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-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; +} -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
