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Diffstat (limited to 'ANDROID_3.4.5/tools/virtio/virtio_test.c')
-rw-r--r--ANDROID_3.4.5/tools/virtio/virtio_test.c265
1 files changed, 0 insertions, 265 deletions
diff --git a/ANDROID_3.4.5/tools/virtio/virtio_test.c b/ANDROID_3.4.5/tools/virtio/virtio_test.c
deleted file mode 100644
index 6bf95f99..00000000
--- a/ANDROID_3.4.5/tools/virtio/virtio_test.c
+++ /dev/null
@@ -1,265 +0,0 @@
-#define _GNU_SOURCE
-#include <getopt.h>
-#include <string.h>
-#include <poll.h>
-#include <sys/eventfd.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <linux/vhost.h>
-#include <linux/virtio.h>
-#include <linux/virtio_ring.h>
-#include "../../drivers/vhost/test.h"
-
-struct vq_info {
- int kick;
- int call;
- int num;
- int idx;
- void *ring;
- /* copy used for control */
- struct vring vring;
- struct virtqueue *vq;
-};
-
-struct vdev_info {
- struct virtio_device vdev;
- int control;
- struct pollfd fds[1];
- struct vq_info vqs[1];
- int nvqs;
- void *buf;
- size_t buf_size;
- struct vhost_memory *mem;
-};
-
-void vq_notify(struct virtqueue *vq)
-{
- struct vq_info *info = vq->priv;
- unsigned long long v = 1;
- int r;
- r = write(info->kick, &v, sizeof v);
- assert(r == sizeof v);
-}
-
-void vq_callback(struct virtqueue *vq)
-{
-}
-
-
-void vhost_vq_setup(struct vdev_info *dev, struct vq_info *info)
-{
- struct vhost_vring_state state = { .index = info->idx };
- struct vhost_vring_file file = { .index = info->idx };
- unsigned long long features = dev->vdev.features[0];
- struct vhost_vring_addr addr = {
- .index = info->idx,
- .desc_user_addr = (uint64_t)(unsigned long)info->vring.desc,
- .avail_user_addr = (uint64_t)(unsigned long)info->vring.avail,
- .used_user_addr = (uint64_t)(unsigned long)info->vring.used,
- };
- int r;
- r = ioctl(dev->control, VHOST_SET_FEATURES, &features);
- assert(r >= 0);
- state.num = info->vring.num;
- r = ioctl(dev->control, VHOST_SET_VRING_NUM, &state);
- assert(r >= 0);
- state.num = 0;
- r = ioctl(dev->control, VHOST_SET_VRING_BASE, &state);
- assert(r >= 0);
- r = ioctl(dev->control, VHOST_SET_VRING_ADDR, &addr);
- assert(r >= 0);
- file.fd = info->kick;
- r = ioctl(dev->control, VHOST_SET_VRING_KICK, &file);
- assert(r >= 0);
- file.fd = info->call;
- r = ioctl(dev->control, VHOST_SET_VRING_CALL, &file);
- assert(r >= 0);
-}
-
-static void vq_info_add(struct vdev_info *dev, int num)
-{
- struct vq_info *info = &dev->vqs[dev->nvqs];
- int r;
- info->idx = dev->nvqs;
- info->kick = eventfd(0, EFD_NONBLOCK);
- info->call = eventfd(0, EFD_NONBLOCK);
- r = posix_memalign(&info->ring, 4096, vring_size(num, 4096));
- assert(r >= 0);
- memset(info->ring, 0, vring_size(num, 4096));
- vring_init(&info->vring, num, info->ring, 4096);
- info->vq = vring_new_virtqueue(info->vring.num, 4096, &dev->vdev,
- true, info->ring,
- vq_notify, vq_callback, "test");
- assert(info->vq);
- info->vq->priv = info;
- vhost_vq_setup(dev, info);
- dev->fds[info->idx].fd = info->call;
- dev->fds[info->idx].events = POLLIN;
- dev->nvqs++;
-}
-
-static void vdev_info_init(struct vdev_info* dev, unsigned long long features)
-{
- int r;
- memset(dev, 0, sizeof *dev);
- dev->vdev.features[0] = features;
- dev->vdev.features[1] = features >> 32;
- dev->buf_size = 1024;
- dev->buf = malloc(dev->buf_size);
- assert(dev->buf);
- dev->control = open("/dev/vhost-test", O_RDWR);
- assert(dev->control >= 0);
- r = ioctl(dev->control, VHOST_SET_OWNER, NULL);
- assert(r >= 0);
- dev->mem = malloc(offsetof(struct vhost_memory, regions) +
- sizeof dev->mem->regions[0]);
- assert(dev->mem);
- memset(dev->mem, 0, offsetof(struct vhost_memory, regions) +
- sizeof dev->mem->regions[0]);
- dev->mem->nregions = 1;
- dev->mem->regions[0].guest_phys_addr = (long)dev->buf;
- dev->mem->regions[0].userspace_addr = (long)dev->buf;
- dev->mem->regions[0].memory_size = dev->buf_size;
- r = ioctl(dev->control, VHOST_SET_MEM_TABLE, dev->mem);
- assert(r >= 0);
-}
-
-/* TODO: this is pretty bad: we get a cache line bounce
- * for the wait queue on poll and another one on read,
- * plus the read which is there just to clear the
- * current state. */
-static void wait_for_interrupt(struct vdev_info *dev)
-{
- int i;
- unsigned long long val;
- poll(dev->fds, dev->nvqs, -1);
- for (i = 0; i < dev->nvqs; ++i)
- if (dev->fds[i].revents & POLLIN) {
- read(dev->fds[i].fd, &val, sizeof val);
- }
-}
-
-static void run_test(struct vdev_info *dev, struct vq_info *vq, int bufs)
-{
- struct scatterlist sl;
- long started = 0, completed = 0;
- long completed_before;
- int r, test = 1;
- unsigned len;
- long long spurious = 0;
- r = ioctl(dev->control, VHOST_TEST_RUN, &test);
- assert(r >= 0);
- for (;;) {
- virtqueue_disable_cb(vq->vq);
- completed_before = completed;
- do {
- if (started < bufs) {
- sg_init_one(&sl, dev->buf, dev->buf_size);
- r = virtqueue_add_buf(vq->vq, &sl, 1, 0,
- dev->buf + started,
- GFP_ATOMIC);
- if (likely(r >= 0)) {
- ++started;
- virtqueue_kick(vq->vq);
- }
- } else
- r = -1;
-
- /* Flush out completed bufs if any */
- if (virtqueue_get_buf(vq->vq, &len)) {
- ++completed;
- r = 0;
- }
-
- } while (r >= 0);
- if (completed == completed_before)
- ++spurious;
- assert(completed <= bufs);
- assert(started <= bufs);
- if (completed == bufs)
- break;
- if (virtqueue_enable_cb(vq->vq)) {
- wait_for_interrupt(dev);
- }
- }
- test = 0;
- r = ioctl(dev->control, VHOST_TEST_RUN, &test);
- assert(r >= 0);
- fprintf(stderr, "spurious wakeus: 0x%llx\n", spurious);
-}
-
-const char optstring[] = "h";
-const struct option longopts[] = {
- {
- .name = "help",
- .val = 'h',
- },
- {
- .name = "event-idx",
- .val = 'E',
- },
- {
- .name = "no-event-idx",
- .val = 'e',
- },
- {
- .name = "indirect",
- .val = 'I',
- },
- {
- .name = "no-indirect",
- .val = 'i',
- },
- {
- }
-};
-
-static void help()
-{
- fprintf(stderr, "Usage: virtio_test [--help]"
- " [--no-indirect]"
- " [--no-event-idx]"
- "\n");
-}
-
-int main(int argc, char **argv)
-{
- struct vdev_info dev;
- unsigned long long features = (1ULL << VIRTIO_RING_F_INDIRECT_DESC) |
- (1ULL << VIRTIO_RING_F_EVENT_IDX);
- int o;
-
- for (;;) {
- o = getopt_long(argc, argv, optstring, longopts, NULL);
- switch (o) {
- case -1:
- goto done;
- case '?':
- help();
- exit(2);
- case 'e':
- features &= ~(1ULL << VIRTIO_RING_F_EVENT_IDX);
- break;
- case 'h':
- help();
- goto done;
- case 'i':
- features &= ~(1ULL << VIRTIO_RING_F_INDIRECT_DESC);
- break;
- default:
- assert(0);
- break;
- }
- }
-
-done:
- vdev_info_init(&dev, features);
- vq_info_add(&dev, 256);
- run_test(&dev, &dev.vqs[0], 0x100000);
- return 0;
-}
generated by cgit (git 2.34.1) at 2024-12-21 10:57:29 +0000