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authorKishon Vijay Abraham I <kishon@ti.com>2020-03-16 16:54:23 +0530
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2020-04-02 17:57:10 +0100
commit73c5762652c538527f654b8eb9af47ae2c2434af (patch)
tree2d40774c2f7c2a3b58080bc83bd0693b0cc9f2ce
parent0a121f9bc3f55b83b2c62f6d6fa8e3125e81964e (diff)
tools: PCI: Add 'd' command line option to support DMA
Add a new command line option 'd' to use DMA for data transfers. It should be used with read, write or copy commands. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Alan Mikhak <alan.mikhak@sifive.com>
-rw-r--r--include/uapi/linux/pcitest.h7
-rw-r--r--tools/pci/pcitest.c23
2 files changed, 26 insertions, 4 deletions
diff --git a/include/uapi/linux/pcitest.h b/include/uapi/linux/pcitest.h
index cbf422e56696..8b868761f8b4 100644
--- a/include/uapi/linux/pcitest.h
+++ b/include/uapi/linux/pcitest.h
@@ -20,4 +20,11 @@
#define PCITEST_SET_IRQTYPE _IOW('P', 0x8, int)
#define PCITEST_GET_IRQTYPE _IO('P', 0x9)
+#define PCITEST_FLAGS_USE_DMA 0x00000001
+
+struct pci_endpoint_test_xfer_param {
+ unsigned long size;
+ unsigned char flags;
+};
+
#endif /* __UAPI_LINUX_PCITEST_H */
diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c
index 32b7c6f9043d..5e3b6368c5e0 100644
--- a/tools/pci/pcitest.c
+++ b/tools/pci/pcitest.c
@@ -34,10 +34,12 @@ struct pci_test {
bool write;
bool copy;
unsigned long size;
+ bool use_dma;
};
static int run_test(struct pci_test *test)
{
+ struct pci_endpoint_test_xfer_param param;
int ret = -EINVAL;
int fd;
@@ -102,7 +104,10 @@ static int run_test(struct pci_test *test)
}
if (test->write) {
- ret = ioctl(fd, PCITEST_WRITE, test->size);
+ param.size = test->size;
+ if (test->use_dma)
+ param.flags = PCITEST_FLAGS_USE_DMA;
+ ret = ioctl(fd, PCITEST_WRITE, &param);
fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
@@ -111,7 +116,10 @@ static int run_test(struct pci_test *test)
}
if (test->read) {
- ret = ioctl(fd, PCITEST_READ, test->size);
+ param.size = test->size;
+ if (test->use_dma)
+ param.flags = PCITEST_FLAGS_USE_DMA;
+ ret = ioctl(fd, PCITEST_READ, &param);
fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
@@ -120,7 +128,10 @@ static int run_test(struct pci_test *test)
}
if (test->copy) {
- ret = ioctl(fd, PCITEST_COPY, test->size);
+ param.size = test->size;
+ if (test->use_dma)
+ param.flags = PCITEST_FLAGS_USE_DMA;
+ ret = ioctl(fd, PCITEST_COPY, &param);
fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
if (ret < 0)
fprintf(stdout, "TEST FAILED\n");
@@ -153,7 +164,7 @@ 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:x:i:Ilhrwcs:")) != EOF)
+ while ((c = getopt(argc, argv, "D:b:m:x:i:dIlhrwcs:")) != EOF)
switch (c) {
case 'D':
test->device = optarg;
@@ -197,6 +208,9 @@ int main(int argc, char **argv)
case 's':
test->size = strtoul(optarg, NULL, 0);
continue;
+ case 'd':
+ test->use_dma = true;
+ continue;
case 'h':
default:
usage:
@@ -209,6 +223,7 @@ usage:
"\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-d Use DMA\n"
"\t-l Legacy IRQ test\n"
"\t-r Read buffer test\n"
"\t-w Write buffer test\n"