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authorThomas Huth <thuth@redhat.com>2019-09-10 16:41:20 +0200
committerThomas Huth <thuth@redhat.com>2020-01-12 11:42:41 +0100
commit1cf4323ecd03235984e43a416a42f10c975cf785 (patch)
tree57ad5475a4cbbbe0088aecf86b682d8e11150b9f /tests/libqos/virtio.c
parent833884f37adc9f125fa2f345704d7019b8651619 (diff)
tests/libqos: Move the libqos files under tests/qtest/
The qos stuff belongs to qtest, so move it into that directory, too. Message-Id: <20191218103059.11729-8-thuth@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'tests/libqos/virtio.c')
-rw-r--r--tests/libqos/virtio.c450
1 files changed, 0 insertions, 450 deletions
diff --git a/tests/libqos/virtio.c b/tests/libqos/virtio.c
deleted file mode 100644
index 9aa360620c..0000000000
--- a/tests/libqos/virtio.c
+++ /dev/null
@@ -1,450 +0,0 @@
-/*
- * libqos virtio driver
- *
- * Copyright (c) 2014 Marc MarĂ­
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- */
-
-#include "qemu/osdep.h"
-#include "qemu/bswap.h"
-#include "libqtest.h"
-#include "libqos/virtio.h"
-#include "standard-headers/linux/virtio_config.h"
-#include "standard-headers/linux/virtio_ring.h"
-
-/*
- * qtest_readX/writeX() functions transfer host endian from/to guest endian.
- * This works great for Legacy VIRTIO devices where we need guest endian
- * accesses. For VIRTIO 1.0 the vring is little-endian so the automatic guest
- * endianness conversion is not wanted.
- *
- * The following qvirtio_readX/writeX() functions handle Legacy and VIRTIO 1.0
- * accesses seamlessly.
- */
-static uint16_t qvirtio_readw(QVirtioDevice *d, QTestState *qts, uint64_t addr)
-{
- uint16_t val = qtest_readw(qts, addr);
-
- if (d->features & (1ull << VIRTIO_F_VERSION_1) && qtest_big_endian(qts)) {
- val = bswap16(val);
- }
- return val;
-}
-
-static uint32_t qvirtio_readl(QVirtioDevice *d, QTestState *qts, uint64_t addr)
-{
- uint32_t val = qtest_readl(qts, addr);
-
- if (d->features & (1ull << VIRTIO_F_VERSION_1) && qtest_big_endian(qts)) {
- val = bswap32(val);
- }
- return val;
-}
-
-static void qvirtio_writew(QVirtioDevice *d, QTestState *qts,
- uint64_t addr, uint16_t val)
-{
- if (d->features & (1ull << VIRTIO_F_VERSION_1) && qtest_big_endian(qts)) {
- val = bswap16(val);
- }
- qtest_writew(qts, addr, val);
-}
-
-static void qvirtio_writel(QVirtioDevice *d, QTestState *qts,
- uint64_t addr, uint32_t val)
-{
- if (d->features & (1ull << VIRTIO_F_VERSION_1) && qtest_big_endian(qts)) {
- val = bswap32(val);
- }
- qtest_writel(qts, addr, val);
-}
-
-static void qvirtio_writeq(QVirtioDevice *d, QTestState *qts,
- uint64_t addr, uint64_t val)
-{
- if (d->features & (1ull << VIRTIO_F_VERSION_1) && qtest_big_endian(qts)) {
- val = bswap64(val);
- }
- qtest_writeq(qts, addr, val);
-}
-
-uint8_t qvirtio_config_readb(QVirtioDevice *d, uint64_t addr)
-{
- g_assert_true(d->features_negotiated);
- return d->bus->config_readb(d, addr);
-}
-
-uint16_t qvirtio_config_readw(QVirtioDevice *d, uint64_t addr)
-{
- g_assert_true(d->features_negotiated);
- return d->bus->config_readw(d, addr);
-}
-
-uint32_t qvirtio_config_readl(QVirtioDevice *d, uint64_t addr)
-{
- g_assert_true(d->features_negotiated);
- return d->bus->config_readl(d, addr);
-}
-
-uint64_t qvirtio_config_readq(QVirtioDevice *d, uint64_t addr)
-{
- g_assert_true(d->features_negotiated);
- return d->bus->config_readq(d, addr);
-}
-
-uint64_t qvirtio_get_features(QVirtioDevice *d)
-{
- return d->bus->get_features(d);
-}
-
-void qvirtio_set_features(QVirtioDevice *d, uint64_t features)
-{
- d->features = features;
- d->bus->set_features(d, features);
-
- /*
- * This could be a separate function for drivers that want to access
- * configuration space before setting FEATURES_OK, but no existing users
- * need that and it's less code for callers if this is done implicitly.
- */
- if (features & (1ull << VIRTIO_F_VERSION_1)) {
- uint8_t status = d->bus->get_status(d) |
- VIRTIO_CONFIG_S_FEATURES_OK;
-
- d->bus->set_status(d, status);
- g_assert_cmphex(d->bus->get_status(d), ==, status);
- }
-
- d->features_negotiated = true;
-}
-
-QVirtQueue *qvirtqueue_setup(QVirtioDevice *d,
- QGuestAllocator *alloc, uint16_t index)
-{
- g_assert_true(d->features_negotiated);
- return d->bus->virtqueue_setup(d, alloc, index);
-}
-
-void qvirtqueue_cleanup(const QVirtioBus *bus, QVirtQueue *vq,
- QGuestAllocator *alloc)
-{
- return bus->virtqueue_cleanup(vq, alloc);
-}
-
-void qvirtio_reset(QVirtioDevice *d)
-{
- d->bus->set_status(d, 0);
- g_assert_cmphex(d->bus->get_status(d), ==, 0);
- d->features_negotiated = false;
-}
-
-void qvirtio_set_acknowledge(QVirtioDevice *d)
-{
- d->bus->set_status(d, d->bus->get_status(d) | VIRTIO_CONFIG_S_ACKNOWLEDGE);
- g_assert_cmphex(d->bus->get_status(d), ==, VIRTIO_CONFIG_S_ACKNOWLEDGE);
-}
-
-void qvirtio_set_driver(QVirtioDevice *d)
-{
- d->bus->set_status(d, d->bus->get_status(d) | VIRTIO_CONFIG_S_DRIVER);
- g_assert_cmphex(d->bus->get_status(d), ==,
- VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_ACKNOWLEDGE);
-}
-
-void qvirtio_set_driver_ok(QVirtioDevice *d)
-{
- d->bus->set_status(d, d->bus->get_status(d) | VIRTIO_CONFIG_S_DRIVER_OK);
- g_assert_cmphex(d->bus->get_status(d), ==, VIRTIO_CONFIG_S_DRIVER_OK |
- VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_ACKNOWLEDGE |
- (d->features & (1ull << VIRTIO_F_VERSION_1) ?
- VIRTIO_CONFIG_S_FEATURES_OK : 0));
-}
-
-void qvirtio_wait_queue_isr(QTestState *qts, QVirtioDevice *d,
- QVirtQueue *vq, gint64 timeout_us)
-{
- gint64 start_time = g_get_monotonic_time();
-
- for (;;) {
- qtest_clock_step(qts, 100);
- if (d->bus->get_queue_isr_status(d, vq)) {
- return;
- }
- g_assert(g_get_monotonic_time() - start_time <= timeout_us);
- }
-}
-
-/* Wait for the status byte at given guest memory address to be set
- *
- * The virtqueue interrupt must not be raised, making this useful for testing
- * event_index functionality.
- */
-uint8_t qvirtio_wait_status_byte_no_isr(QTestState *qts, QVirtioDevice *d,
- QVirtQueue *vq,
- uint64_t addr,
- gint64 timeout_us)
-{
- gint64 start_time = g_get_monotonic_time();
- uint8_t val;
-
- while ((val = qtest_readb(qts, addr)) == 0xff) {
- qtest_clock_step(qts, 100);
- g_assert(!d->bus->get_queue_isr_status(d, vq));
- g_assert(g_get_monotonic_time() - start_time <= timeout_us);
- }
- return val;
-}
-
-/*
- * qvirtio_wait_used_elem:
- * @desc_idx: The next expected vq->desc[] index in the used ring
- * @len: A pointer that is filled with the length written into the buffer, may
- * be NULL
- * @timeout_us: How many microseconds to wait before failing
- *
- * This function waits for the next completed request on the used ring.
- */
-void qvirtio_wait_used_elem(QTestState *qts, QVirtioDevice *d,
- QVirtQueue *vq,
- uint32_t desc_idx,
- uint32_t *len,
- gint64 timeout_us)
-{
- gint64 start_time = g_get_monotonic_time();
-
- for (;;) {
- uint32_t got_desc_idx;
-
- qtest_clock_step(qts, 100);
-
- if (d->bus->get_queue_isr_status(d, vq) &&
- qvirtqueue_get_buf(qts, vq, &got_desc_idx, len)) {
- g_assert_cmpint(got_desc_idx, ==, desc_idx);
- return;
- }
-
- g_assert(g_get_monotonic_time() - start_time <= timeout_us);
- }
-}
-
-void qvirtio_wait_config_isr(QVirtioDevice *d, gint64 timeout_us)
-{
- d->bus->wait_config_isr_status(d, timeout_us);
-}
-
-void qvring_init(QTestState *qts, const QGuestAllocator *alloc, QVirtQueue *vq,
- uint64_t addr)
-{
- int i;
-
- vq->desc = addr;
- vq->avail = vq->desc + vq->size * sizeof(struct vring_desc);
- vq->used = (uint64_t)((vq->avail + sizeof(uint16_t) * (3 + vq->size)
- + vq->align - 1) & ~(vq->align - 1));
-
- for (i = 0; i < vq->size - 1; i++) {
- /* vq->desc[i].addr */
- qvirtio_writeq(vq->vdev, qts, vq->desc + (16 * i), 0);
- /* vq->desc[i].next */
- qvirtio_writew(vq->vdev, qts, vq->desc + (16 * i) + 14, i + 1);
- }
-
- /* vq->avail->flags */
- qvirtio_writew(vq->vdev, qts, vq->avail, 0);
- /* vq->avail->idx */
- qvirtio_writew(vq->vdev, qts, vq->avail + 2, 0);
- /* vq->avail->used_event */
- qvirtio_writew(vq->vdev, qts, vq->avail + 4 + (2 * vq->size), 0);
-
- /* vq->used->flags */
- qvirtio_writew(vq->vdev, qts, vq->used, 0);
- /* vq->used->avail_event */
- qvirtio_writew(vq->vdev, qts, vq->used + 2 +
- sizeof(struct vring_used_elem) * vq->size, 0);
-}
-
-QVRingIndirectDesc *qvring_indirect_desc_setup(QTestState *qs, QVirtioDevice *d,
- QGuestAllocator *alloc,
- uint16_t elem)
-{
- int i;
- QVRingIndirectDesc *indirect = g_malloc(sizeof(*indirect));
-
- indirect->index = 0;
- indirect->elem = elem;
- indirect->desc = guest_alloc(alloc, sizeof(struct vring_desc) * elem);
-
- for (i = 0; i < elem - 1; ++i) {
- /* indirect->desc[i].addr */
- qvirtio_writeq(d, qs, indirect->desc + (16 * i), 0);
- /* indirect->desc[i].flags */
- qvirtio_writew(d, qs, indirect->desc + (16 * i) + 12,
- VRING_DESC_F_NEXT);
- /* indirect->desc[i].next */
- qvirtio_writew(d, qs, indirect->desc + (16 * i) + 14, i + 1);
- }
-
- return indirect;
-}
-
-void qvring_indirect_desc_add(QVirtioDevice *d, QTestState *qts,
- QVRingIndirectDesc *indirect,
- uint64_t data, uint32_t len, bool write)
-{
- uint16_t flags;
-
- g_assert_cmpint(indirect->index, <, indirect->elem);
-
- flags = qvirtio_readw(d, qts, indirect->desc +
- (16 * indirect->index) + 12);
-
- if (write) {
- flags |= VRING_DESC_F_WRITE;
- }
-
- /* indirect->desc[indirect->index].addr */
- qvirtio_writeq(d, qts, indirect->desc + (16 * indirect->index), data);
- /* indirect->desc[indirect->index].len */
- qvirtio_writel(d, qts, indirect->desc + (16 * indirect->index) + 8, len);
- /* indirect->desc[indirect->index].flags */
- qvirtio_writew(d, qts, indirect->desc + (16 * indirect->index) + 12,
- flags);
-
- indirect->index++;
-}
-
-uint32_t qvirtqueue_add(QTestState *qts, QVirtQueue *vq, uint64_t data,
- uint32_t len, bool write, bool next)
-{
- uint16_t flags = 0;
- vq->num_free--;
-
- if (write) {
- flags |= VRING_DESC_F_WRITE;
- }
-
- if (next) {
- flags |= VRING_DESC_F_NEXT;
- }
-
- /* vq->desc[vq->free_head].addr */
- qvirtio_writeq(vq->vdev, qts, vq->desc + (16 * vq->free_head), data);
- /* vq->desc[vq->free_head].len */
- qvirtio_writel(vq->vdev, qts, vq->desc + (16 * vq->free_head) + 8, len);
- /* vq->desc[vq->free_head].flags */
- qvirtio_writew(vq->vdev, qts, vq->desc + (16 * vq->free_head) + 12, flags);
-
- return vq->free_head++; /* Return and increase, in this order */
-}
-
-uint32_t qvirtqueue_add_indirect(QTestState *qts, QVirtQueue *vq,
- QVRingIndirectDesc *indirect)
-{
- g_assert(vq->indirect);
- g_assert_cmpint(vq->size, >=, indirect->elem);
- g_assert_cmpint(indirect->index, ==, indirect->elem);
-
- vq->num_free--;
-
- /* vq->desc[vq->free_head].addr */
- qvirtio_writeq(vq->vdev, qts, vq->desc + (16 * vq->free_head),
- indirect->desc);
- /* vq->desc[vq->free_head].len */
- qvirtio_writel(vq->vdev, qts, vq->desc + (16 * vq->free_head) + 8,
- sizeof(struct vring_desc) * indirect->elem);
- /* vq->desc[vq->free_head].flags */
- qvirtio_writew(vq->vdev, qts, vq->desc + (16 * vq->free_head) + 12,
- VRING_DESC_F_INDIRECT);
-
- return vq->free_head++; /* Return and increase, in this order */
-}
-
-void qvirtqueue_kick(QTestState *qts, QVirtioDevice *d, QVirtQueue *vq,
- uint32_t free_head)
-{
- /* vq->avail->idx */
- uint16_t idx = qvirtio_readw(d, qts, vq->avail + 2);
- /* vq->used->flags */
- uint16_t flags;
- /* vq->used->avail_event */
- uint16_t avail_event;
-
- /* vq->avail->ring[idx % vq->size] */
- qvirtio_writew(d, qts, vq->avail + 4 + (2 * (idx % vq->size)), free_head);
- /* vq->avail->idx */
- qvirtio_writew(d, qts, vq->avail + 2, idx + 1);
-
- /* Must read after idx is updated */
- flags = qvirtio_readw(d, qts, vq->avail);
- avail_event = qvirtio_readw(d, qts, vq->used + 4 +
- sizeof(struct vring_used_elem) * vq->size);
-
- /* < 1 because we add elements to avail queue one by one */
- if ((flags & VRING_USED_F_NO_NOTIFY) == 0 &&
- (!vq->event || (uint16_t)(idx-avail_event) < 1)) {
- d->bus->virtqueue_kick(d, vq);
- }
-}
-
-/*
- * qvirtqueue_get_buf:
- * @desc_idx: A pointer that is filled with the vq->desc[] index, may be NULL
- * @len: A pointer that is filled with the length written into the buffer, may
- * be NULL
- *
- * This function gets the next used element if there is one ready.
- *
- * Returns: true if an element was ready, false otherwise
- */
-bool qvirtqueue_get_buf(QTestState *qts, QVirtQueue *vq, uint32_t *desc_idx,
- uint32_t *len)
-{
- uint16_t idx;
- uint64_t elem_addr, addr;
-
- idx = qvirtio_readw(vq->vdev, qts,
- vq->used + offsetof(struct vring_used, idx));
- if (idx == vq->last_used_idx) {
- return false;
- }
-
- elem_addr = vq->used +
- offsetof(struct vring_used, ring) +
- (vq->last_used_idx % vq->size) *
- sizeof(struct vring_used_elem);
-
- if (desc_idx) {
- addr = elem_addr + offsetof(struct vring_used_elem, id);
- *desc_idx = qvirtio_readl(vq->vdev, qts, addr);
- }
-
- if (len) {
- addr = elem_addr + offsetof(struct vring_used_elem, len);
- *len = qvirtio_readw(vq->vdev, qts, addr);
- }
-
- vq->last_used_idx++;
- return true;
-}
-
-void qvirtqueue_set_used_event(QTestState *qts, QVirtQueue *vq, uint16_t idx)
-{
- g_assert(vq->event);
-
- /* vq->avail->used_event */
- qvirtio_writew(vq->vdev, qts, vq->avail + 4 + (2 * vq->size), idx);
-}
-
-void qvirtio_start_device(QVirtioDevice *vdev)
-{
- qvirtio_reset(vdev);
- qvirtio_set_acknowledge(vdev);
- qvirtio_set_driver(vdev);
-}
-
-bool qvirtio_is_big_endian(QVirtioDevice *d)
-{
- return d->big_endian;
-}