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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-09 05:03:25 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-09 05:03:25 +0300
commit857f8640147c9fb43f20e43cbca6452710e1ca5d (patch)
tree76a92068d703b8001ca790ffa096d435fa24ae81 /tools
parent8f3207c7eab9d885cc64c778416537034a7d9c5b (diff)
parent3146c8f4de9b0858794a902f273aec13f168596e (diff)
downloadlinux-857f8640147c9fb43f20e43cbca6452710e1ca5d.tar.xz
Merge tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas: - add framework for supporting PCIe devices in Endpoint mode (Kishon Vijay Abraham I) - use non-postable PCI config space mappings when possible (Lorenzo Pieralisi) - clean up and unify mmap of PCI BARs (David Woodhouse) - export and unify Function Level Reset support (Christoph Hellwig) - avoid FLR for Intel 82579 NICs (Sasha Neftin) - add pci_request_irq() and pci_free_irq() helpers (Christoph Hellwig) - short-circuit config access failures for disconnected devices (Keith Busch) - remove D3 sleep delay when possible (Adrian Hunter) - freeze PME scan before suspending devices (Lukas Wunner) - stop disabling MSI/MSI-X in pci_device_shutdown() (Prarit Bhargava) - disable boot interrupt quirk for ASUS M2N-LR (Stefan Assmann) - add arch-specific alignment control to improve device passthrough by avoiding multiple BARs in a page (Yongji Xie) - add sysfs sriov_drivers_autoprobe to control VF driver binding (Bodong Wang) - allow slots below PCI-to-PCIe "reverse bridges" (Bjorn Helgaas) - fix crashes when unbinding host controllers that don't support removal (Brian Norris) - add driver for MicroSemi Switchtec management interface (Logan Gunthorpe) - add driver for Faraday Technology FTPCI100 host bridge (Linus Walleij) - add i.MX7D support (Andrey Smirnov) - use generic MSI support for Aardvark (Thomas Petazzoni) - make Rockchip driver modular (Brian Norris) - advertise 128-byte Read Completion Boundary support for Rockchip (Shawn Lin) - advertise PCI_EXP_LNKSTA_SLC for Rockchip root port (Shawn Lin) - convert atomic_t to refcount_t in HV driver (Elena Reshetova) - add CPU IRQ affinity in HV driver (K. Y. Srinivasan) - fix PCI bus removal in HV driver (Long Li) - add support for ThunderX2 DMA alias topology (Jayachandran C) - add ThunderX pass2.x 2nd node MCFG quirk (Tomasz Nowicki) - add ITE 8893 bridge DMA alias quirk (Jarod Wilson) - restrict Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices (Manish Jaggi) * tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (146 commits) PCI: Don't allow unbinding host controllers that aren't prepared ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP MAINTAINERS: Add PCI Endpoint maintainer Documentation: PCI: Add userguide for PCI endpoint test function tools: PCI: Add sample test script to invoke pcitest tools: PCI: Add a userspace tool to test PCI endpoint Documentation: misc-devices: Add Documentation for pci-endpoint-test driver misc: Add host side PCI driver for PCI test function device PCI: Add device IDs for DRA74x and DRA72x dt-bindings: PCI: dra7xx: Add DT bindings to enable unaligned access PCI: dwc: dra7xx: Workaround for errata id i870 dt-bindings: PCI: dra7xx: Add DT bindings for PCI dra7xx EP mode PCI: dwc: dra7xx: Add EP mode support PCI: dwc: dra7xx: Facilitate wrapper and MSI interrupts to be enabled independently dt-bindings: PCI: Add DT bindings for PCI designware EP mode PCI: dwc: designware: Add EP mode support Documentation: PCI: Add binding documentation for pci-test endpoint function ixgbe: Use pcie_flr() instead of duplicating it IB/hfi1: Use pcie_flr() instead of duplicating it PCI: imx6: Fix spelling mistake: "contol" -> "control" ...
Diffstat (limited to 'tools')
-rw-r--r--tools/pci/pcitest.c186
-rw-r--r--tools/pci/pcitest.sh56
2 files changed, 242 insertions, 0 deletions
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@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 <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;
+}
diff --git a/tools/pci/pcitest.sh b/tools/pci/pcitest.sh
new file mode 100644
index 000000000000..5442bbea4c22
--- /dev/null
+++ b/tools/pci/pcitest.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+
+echo "BAR tests"
+echo
+
+bar=0
+
+while [ $bar -lt 6 ]
+do
+ pcitest -b $bar
+ bar=`expr $bar + 1`
+done
+echo
+
+echo "Interrupt tests"
+echo
+
+pcitest -l
+msi=1
+
+while [ $msi -lt 33 ]
+do
+ pcitest -m $msi
+ msi=`expr $msi + 1`
+done
+echo
+
+echo "Read Tests"
+echo
+
+pcitest -r -s 1
+pcitest -r -s 1024
+pcitest -r -s 1025
+pcitest -r -s 1024000
+pcitest -r -s 1024001
+echo
+
+echo "Write Tests"
+echo
+
+pcitest -w -s 1
+pcitest -w -s 1024
+pcitest -w -s 1025
+pcitest -w -s 1024000
+pcitest -w -s 1024001
+echo
+
+echo "Copy Tests"
+echo
+
+pcitest -c -s 1
+pcitest -c -s 1024
+pcitest -c -s 1025
+pcitest -c -s 1024000
+pcitest -c -s 1024001
+echo