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