Le mar. 5 mars 2019 à 21:54, John Stultz <john.stu...@linaro.org> a écrit : > > Add very trivial allocation test for dma-heaps. > > TODO: Need to actually do some validation on > the returned dma-buf. > > Cc: Laura Abbott <labb...@redhat.com> > Cc: Benjamin Gaignard <benjamin.gaign...@linaro.org> > Cc: Greg KH <gre...@linuxfoundation.org> > Cc: Sumit Semwal <sumit.sem...@linaro.org> > Cc: Liam Mark <lm...@codeaurora.org> > Cc: Brian Starkey <brian.star...@arm.com> > Cc: Andrew F. Davis <a...@ti.com> > Cc: Chenbo Feng <fe...@google.com> > Cc: Alistair Strachan <astrac...@google.com> > Cc: dri-devel@lists.freedesktop.org > Signed-off-by: John Stultz <john.stu...@linaro.org> > --- > v2: Switched to use reworked dma-heap apis > --- > tools/testing/selftests/dmabuf-heaps/Makefile | 11 +++ > tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 96 > ++++++++++++++++++++++ > 2 files changed, 107 insertions(+) > create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile > create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c > > diff --git a/tools/testing/selftests/dmabuf-heaps/Makefile > b/tools/testing/selftests/dmabuf-heaps/Makefile > new file mode 100644 > index 0000000..c414ad3 > --- /dev/null > +++ b/tools/testing/selftests/dmabuf-heaps/Makefile > @@ -0,0 +1,11 @@ > +# SPDX-License-Identifier: GPL-2.0 > +CFLAGS += -static -O3 -Wl,-no-as-needed -Wall > +#LDLIBS += -lrt -lpthread -lm > + > +# these are all "safe" tests that don't modify > +# system time or require escalated privileges > +TEST_GEN_PROGS = dmabuf-heap > + > + > +include ../lib.mk > + > diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c > b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c > new file mode 100644 > index 0000000..06837a4 > --- /dev/null > +++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c > @@ -0,0 +1,96 @@ > +// SPDX-License-Identifier: GPL-2.0 > + > +#include <dirent.h> > +#include <errno.h> > +#include <fcntl.h> > +#include <stdio.h> > +#include <string.h> > +#include <unistd.h> > +#include <sys/ioctl.h> > +#include <sys/mman.h> > +#include <sys/types.h> > + > +#include "../../../../include/uapi/linux/dma-heap.h" > + > +#define DEVPATH "/dev/dma_heap" > + > +int dmabuf_heap_open(char *name) > +{ > + int ret, fd; > + char buf[256]; > + > + ret = sprintf(buf, "%s/%s", DEVPATH, name); > + if (ret < 0) { > + printf("sprintf failed!\n"); > + return ret; > + } > + > + fd = open(buf, O_RDWR); > + if (fd < 0) > + printf("open %s failed!\n", buf); > + return fd; > +} > + > +int dmabuf_heap_alloc(int fd, size_t len, unsigned int flags, int *dmabuf_fd) > +{ > + struct dma_heap_allocation_data data = { > + .len = len, > + .flags = flags, > + }; > + int ret; > + > + if (dmabuf_fd == NULL) > + return -EINVAL; > + > + ret = ioctl(fd, DMA_HEAP_IOC_ALLOC, &data); > + if (ret < 0) > + return ret; > + *dmabuf_fd = (int)data.fd; > + return ret; > +} > + > +#define ONE_MEG (1024*1024) > + > +void do_test(char *heap_name) > +{ > + int heap_fd = -1, dmabuf_fd = -1; > + int ret; > + > + printf("Testing heap: %s\n", heap_name); > + > + heap_fd = dmabuf_heap_open(heap_name); > + if (heap_fd < 0) > + return; > + > + printf("Allocating 1 MEG\n"); > + ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd); > + if (ret) > + goto out; > + > + /* DO SOMETHING WITH THE DMABUF HERE? */
You can do a call to mmap and write a pattern in the buffer. Benjamin > + > +out: > + if (dmabuf_fd >= 0) > + close(dmabuf_fd); > + if (heap_fd >= 0) > + close(heap_fd); > +} > + > + > +int main(void) > +{ > + DIR *d; > + struct dirent *dir; > + > + d = opendir(DEVPATH); > + if (!d) { > + printf("No %s directory?\n", DEVPATH); > + return -1; > + } > + > + while ((dir = readdir(d)) != NULL) > + do_test(dir->d_name); > + > + > + return 0; > +} > -- > 2.7.4 > -- Benjamin Gaignard Graphic Study Group Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel