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tools: PCI: Add MSI-X support

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Add MSI-X support to pcitest tool.

Modify pcitest.sh script to accommodate MSI-X interrupt tests.

Update documentation accordingly.

Signed-off-by: Gustavo Pimentel <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Acked-by: Kishon Vijay Abraham I <[email protected]>
This commit is contained in:
Gustavo Pimentel 2018-07-19 10:32:21 +02:00 • committed by Lorenzo Pieralisi
commit 0653217c18
3 changed files with 87 additions and 15 deletions
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51
tools/pci/pcitest.c
View file

@ -31,12 +31,17 @@
#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;
@ -65,6 +70,24 @@ static int run_test(struct pci_test *test)
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");
@ -83,6 +106,15 @@ static int run_test(struct pci_test *test)
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);
@ -133,7 +165,7 @@ int main(int argc, char **argv)
/* set default endpoint device */
test->device = "/dev/pci-endpoint-test.0";
while ((c = getopt(argc, argv, "D:b:m:lrwcs:")) != EOF)
while ((c = getopt(argc, argv, "D:b:m:x:i:Ilrwcs:")) != EOF)
switch (c) {
case 'D':
test->device = optarg;
@ -151,6 +183,20 @@ int main(int argc, char **argv)
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;
@ -173,6 +219,9 @@ usage:
"\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"

15
tools/pci/pcitest.sh
View file

@ -16,7 +16,10 @@ echo
echo "Interrupt tests"
echo
pcitest -i 0
pcitest -l
pcitest -i 1
msi=1
while [ $msi -lt 33 ]
@ -26,9 +29,21 @@ do
done
echo
pcitest -i 2
msix=1
while [ $msix -lt 2049 ]
do
pcitest -x $msix
msix=`expr $msix + 1`
done
echo
echo "Read Tests"
echo
pcitest -i 1
pcitest -r -s 1
pcitest -r -s 1024
pcitest -r -s 1025