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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>
This commit is contained in:
Kishon Vijay Abraham I 2020-03-16 16:54:23 +05:30 committed by Lorenzo Pieralisi
parent 0a121f9bc3
commit 73c5762652
2 changed files with 26 additions and 4 deletions
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7
include/uapi/linux/pcitest.h
View File

@ -20,4 +20,11 @@
#define PCITEST_SET_IRQTYPE _IOW('P', 0x8, int) #define PCITEST_SET_IRQTYPE _IOW('P', 0x8, int)
#define PCITEST_GET_IRQTYPE _IO('P', 0x9) #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 */ #endif /* __UAPI_LINUX_PCITEST_H */

23
tools/pci/pcitest.c
View File

@ -34,10 +34,12 @@ struct pci_test {
bool write; bool write;
bool copy; bool copy;
unsigned long size; unsigned long size;
bool use_dma;
}; };
static int run_test(struct pci_test *test) static int run_test(struct pci_test *test)
{ {
struct pci_endpoint_test_xfer_param param;
int ret = -EINVAL; int ret = -EINVAL;
int fd; int fd;
@ -102,7 +104,10 @@ static int run_test(struct pci_test *test)
} }
if (test->write) { 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); fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
if (ret < 0) if (ret < 0)
fprintf(stdout, "TEST FAILED\n"); fprintf(stdout, "TEST FAILED\n");
@ -111,7 +116,10 @@ static int run_test(struct pci_test *test)
} }
if (test->read) { 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); fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
if (ret < 0) if (ret < 0)
fprintf(stdout, "TEST FAILED\n"); fprintf(stdout, "TEST FAILED\n");
@ -120,7 +128,10 @@ static int run_test(struct pci_test *test)
} }
if (test->copy) { 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); fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
if (ret < 0) if (ret < 0)
fprintf(stdout, "TEST FAILED\n"); fprintf(stdout, "TEST FAILED\n");
@ -153,7 +164,7 @@ int main(int argc, char **argv)
/* set default endpoint device */ /* set default endpoint device */
test->device = "/dev/pci-endpoint-test.0"; 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) { switch (c) {
case 'D': case 'D':
test->device = optarg; test->device = optarg;
@ -197,6 +208,9 @@ int main(int argc, char **argv)
case 's': case 's':
test->size = strtoul(optarg, NULL, 0); test->size = strtoul(optarg, NULL, 0);
continue; continue;
case 'd':
test->use_dma = true;
continue;
case 'h': case 'h':
default: default:
usage: usage:
@ -209,6 +223,7 @@ usage:
"\t-x <msix num> \tMSI-X test (msix number between 1..2048)\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 <irq type> \tSet IRQ type (0 - Legacy, 1 - MSI, 2 - MSI-X)\n"
"\t-I Get current IRQ type configured\n" "\t-I Get current IRQ type configured\n"
"\t-d Use DMA\n"
"\t-l Legacy IRQ test\n" "\t-l Legacy IRQ test\n"
"\t-r Read buffer test\n" "\t-r Read buffer test\n"
"\t-w Write buffer test\n" "\t-w Write buffer test\n"