298 lines
9.1 KiB
C
298 lines
9.1 KiB
C
/*
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* QTest testcase for VirtIO SCSI
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*
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* Copyright (c) 2014 SUSE LINUX Products GmbH
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* Copyright (c) 2015 Red Hat Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "libqtest-single.h"
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#include "qemu/module.h"
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#include "scsi/constants.h"
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#include "libqos/libqos-pc.h"
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#include "libqos/libqos-spapr.h"
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#include "libqos/virtio.h"
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#include "libqos/virtio-pci.h"
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#include "standard-headers/linux/virtio_ids.h"
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#include "standard-headers/linux/virtio_pci.h"
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#include "standard-headers/linux/virtio_scsi.h"
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#include "libqos/virtio-scsi.h"
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#include "libqos/qgraph.h"
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#define PCI_SLOT 0x02
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#define PCI_FN 0x00
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#define QVIRTIO_SCSI_TIMEOUT_US (1 * 1000 * 1000)
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#define MAX_NUM_QUEUES 64
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typedef struct {
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QVirtioDevice *dev;
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int num_queues;
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QVirtQueue *vq[MAX_NUM_QUEUES + 2];
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} QVirtioSCSIQueues;
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static QGuestAllocator *alloc;
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static void qvirtio_scsi_pci_free(QVirtioSCSIQueues *vs)
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{
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int i;
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for (i = 0; i < vs->num_queues + 2; i++) {
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qvirtqueue_cleanup(vs->dev->bus, vs->vq[i], alloc);
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}
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g_free(vs);
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}
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static uint64_t qvirtio_scsi_alloc(QVirtioSCSIQueues *vs, size_t alloc_size,
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const void *data)
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{
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uint64_t addr;
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addr = guest_alloc(alloc, alloc_size);
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if (data) {
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memwrite(addr, data, alloc_size);
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}
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return addr;
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}
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static uint8_t virtio_scsi_do_command(QVirtioSCSIQueues *vs,
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const uint8_t *cdb,
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const uint8_t *data_in,
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size_t data_in_len,
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uint8_t *data_out, size_t data_out_len,
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struct virtio_scsi_cmd_resp *resp_out)
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{
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QVirtQueue *vq;
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struct virtio_scsi_cmd_req req = { { 0 } };
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struct virtio_scsi_cmd_resp resp = { .response = 0xff, .status = 0xff };
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uint64_t req_addr, resp_addr, data_in_addr = 0, data_out_addr = 0;
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uint8_t response;
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uint32_t free_head;
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QTestState *qts = global_qtest;
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vq = vs->vq[2];
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req.lun[0] = 1; /* Select LUN */
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req.lun[1] = 1; /* Select target 1 */
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memcpy(req.cdb, cdb, VIRTIO_SCSI_CDB_SIZE);
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/* XXX: Fix endian if any multi-byte field in req/resp is used */
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/* Add request header */
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req_addr = qvirtio_scsi_alloc(vs, sizeof(req), &req);
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free_head = qvirtqueue_add(qts, vq, req_addr, sizeof(req), false, true);
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if (data_out_len) {
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data_out_addr = qvirtio_scsi_alloc(vs, data_out_len, data_out);
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qvirtqueue_add(qts, vq, data_out_addr, data_out_len, false, true);
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}
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/* Add response header */
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resp_addr = qvirtio_scsi_alloc(vs, sizeof(resp), &resp);
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qvirtqueue_add(qts, vq, resp_addr, sizeof(resp), true, !!data_in_len);
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if (data_in_len) {
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data_in_addr = qvirtio_scsi_alloc(vs, data_in_len, data_in);
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qvirtqueue_add(qts, vq, data_in_addr, data_in_len, true, false);
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}
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qvirtqueue_kick(qts, vs->dev, vq, free_head);
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qvirtio_wait_used_elem(qts, vs->dev, vq, free_head, NULL,
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QVIRTIO_SCSI_TIMEOUT_US);
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response = readb(resp_addr +
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offsetof(struct virtio_scsi_cmd_resp, response));
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if (resp_out) {
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memread(resp_addr, resp_out, sizeof(*resp_out));
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}
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guest_free(alloc, req_addr);
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guest_free(alloc, resp_addr);
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guest_free(alloc, data_in_addr);
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guest_free(alloc, data_out_addr);
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return response;
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}
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static QVirtioSCSIQueues *qvirtio_scsi_init(QVirtioDevice *dev)
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{
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QVirtioSCSIQueues *vs;
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const uint8_t test_unit_ready_cdb[VIRTIO_SCSI_CDB_SIZE] = {};
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struct virtio_scsi_cmd_resp resp;
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uint64_t features;
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int i;
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vs = g_new0(QVirtioSCSIQueues, 1);
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vs->dev = dev;
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features = qvirtio_get_features(dev);
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features &= ~(QVIRTIO_F_BAD_FEATURE | (1ull << VIRTIO_RING_F_EVENT_IDX));
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qvirtio_set_features(dev, features);
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vs->num_queues = qvirtio_config_readl(dev, 0);
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g_assert_cmpint(vs->num_queues, <, MAX_NUM_QUEUES);
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for (i = 0; i < vs->num_queues + 2; i++) {
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vs->vq[i] = qvirtqueue_setup(dev, alloc, i);
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}
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qvirtio_set_driver_ok(dev);
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/* Clear the POWER ON OCCURRED unit attention */
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g_assert_cmpint(virtio_scsi_do_command(vs, test_unit_ready_cdb,
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NULL, 0, NULL, 0, &resp),
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==, 0);
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g_assert_cmpint(resp.status, ==, CHECK_CONDITION);
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g_assert_cmpint(resp.sense[0], ==, 0x70); /* Fixed format sense buffer */
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g_assert_cmpint(resp.sense[2], ==, UNIT_ATTENTION);
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g_assert_cmpint(resp.sense[12], ==, 0x29); /* POWER ON */
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g_assert_cmpint(resp.sense[13], ==, 0x00);
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return vs;
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}
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static void hotplug(void *obj, void *data, QGuestAllocator *alloc)
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{
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QTestState *qts = global_qtest;
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qtest_qmp_device_add(qts, "scsi-hd", "scsihd", "{'drive': 'drv1'}");
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qtest_qmp_device_del(qts, "scsihd");
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}
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/* Test WRITE SAME with the lba not aligned */
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static void test_unaligned_write_same(void *obj, void *data,
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QGuestAllocator *t_alloc)
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{
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QVirtioSCSI *scsi = obj;
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QVirtioSCSIQueues *vs;
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uint8_t buf1[512] = { 0 };
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uint8_t buf2[512] = { 1 };
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const uint8_t write_same_cdb_1[VIRTIO_SCSI_CDB_SIZE] = {
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0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x02, 0x00
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};
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const uint8_t write_same_cdb_2[VIRTIO_SCSI_CDB_SIZE] = {
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0x41, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x33, 0x00, 0x00
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};
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const uint8_t write_same_cdb_ndob[VIRTIO_SCSI_CDB_SIZE] = {
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0x41, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x33, 0x00, 0x00
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};
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alloc = t_alloc;
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vs = qvirtio_scsi_init(scsi->vdev);
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g_assert_cmphex(0, ==,
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virtio_scsi_do_command(vs, write_same_cdb_1, NULL, 0, buf1, 512,
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NULL));
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g_assert_cmphex(0, ==,
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virtio_scsi_do_command(vs, write_same_cdb_2, NULL, 0, buf2, 512,
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NULL));
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g_assert_cmphex(0, ==,
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virtio_scsi_do_command(vs, write_same_cdb_ndob, NULL, 0, NULL, 0,
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NULL));
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qvirtio_scsi_pci_free(vs);
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}
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static void test_iothread_attach_node(void *obj, void *data,
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QGuestAllocator *t_alloc)
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{
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QVirtioSCSIPCI *scsi_pci = obj;
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QVirtioSCSI *scsi = &scsi_pci->scsi;
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QVirtioSCSIQueues *vs;
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char tmp_path[] = "/tmp/qtest.XXXXXX";
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int fd;
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int ret;
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uint8_t buf[512] = { 0 };
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const uint8_t write_cdb[VIRTIO_SCSI_CDB_SIZE] = {
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/* WRITE(10) to LBA 0, transfer length 1 */
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0x2a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00
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};
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alloc = t_alloc;
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vs = qvirtio_scsi_init(scsi->vdev);
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/* Create a temporary qcow2 overlay*/
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fd = mkstemp(tmp_path);
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g_assert(fd >= 0);
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close(fd);
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if (!have_qemu_img()) {
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g_test_message("QTEST_QEMU_IMG not set or qemu-img missing; "
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"skipping snapshot test");
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goto fail;
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}
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mkqcow2(tmp_path, 64);
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/* Attach the overlay to the null0 node */
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qtest_qmp_assert_success(scsi_pci->pci_vdev.pdev->bus->qts,
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"{'execute': 'blockdev-add', 'arguments': {"
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" 'driver': 'qcow2', 'node-name': 'overlay',"
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" 'backing': 'null0', 'file': {"
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" 'driver': 'file', 'filename': %s}}}",
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tmp_path);
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/* Send a request to see if the AioContext is still right */
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ret = virtio_scsi_do_command(vs, write_cdb, NULL, 0, buf, 512, NULL);
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g_assert_cmphex(ret, ==, 0);
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fail:
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qvirtio_scsi_pci_free(vs);
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unlink(tmp_path);
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}
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static void *virtio_scsi_hotplug_setup(GString *cmd_line, void *arg)
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{
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g_string_append(cmd_line,
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" -drive id=drv1,if=none,file=null-co://,"
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"file.read-zeroes=on,format=raw");
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return arg;
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}
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static void *virtio_scsi_setup(GString *cmd_line, void *arg)
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{
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g_string_append(cmd_line,
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" -drive file=blkdebug::null-co://,"
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"file.image.read-zeroes=on,"
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"if=none,id=dr1,format=raw,file.align=4k "
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"-device scsi-hd,drive=dr1,lun=0,scsi-id=1");
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return arg;
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}
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static void *virtio_scsi_setup_iothread(GString *cmd_line, void *arg)
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{
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g_string_append(cmd_line,
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" -object iothread,id=thread0"
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" -blockdev driver=null-co,read-zeroes=on,node-name=null0"
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" -device scsi-hd,drive=null0");
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return arg;
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}
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static void register_virtio_scsi_test(void)
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{
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QOSGraphTestOptions opts = { };
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opts.before = virtio_scsi_hotplug_setup;
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qos_add_test("hotplug", "virtio-scsi", hotplug, &opts);
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opts.before = virtio_scsi_setup;
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qos_add_test("unaligned-write-same", "virtio-scsi",
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test_unaligned_write_same, &opts);
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opts.before = virtio_scsi_setup_iothread;
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opts.edge = (QOSGraphEdgeOptions) {
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.extra_device_opts = "iothread=thread0",
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};
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qos_add_test("iothread-attach-node", "virtio-scsi-pci",
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test_iothread_attach_node, &opts);
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}
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libqos_init(register_virtio_scsi_test);
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