diff options
author | Thomas Huth <thuth@redhat.com> | 2019-09-10 16:41:20 +0200 |
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committer | Thomas Huth <thuth@redhat.com> | 2020-01-12 11:42:41 +0100 |
commit | 1cf4323ecd03235984e43a416a42f10c975cf785 (patch) | |
tree | 57ad5475a4cbbbe0088aecf86b682d8e11150b9f /tests/libqos/virtio.c | |
parent | 833884f37adc9f125fa2f345704d7019b8651619 (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.c | 450 |
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; -} |