diff options
Diffstat (limited to 'tests/ivshmem-test.c')
| -rw-r--r-- | tests/ivshmem-test.c | 521 |
1 files changed, 0 insertions, 521 deletions
diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c deleted file mode 100644 index fe5eb304b1..0000000000 --- a/tests/ivshmem-test.c +++ /dev/null @@ -1,521 +0,0 @@ -/* - * QTest testcase for ivshmem - * - * 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 <glib/gstdio.h> -#include "contrib/ivshmem-server/ivshmem-server.h" -#include "libqos/libqos-pc.h" -#include "libqos/libqos-spapr.h" -#include "libqtest.h" -#include "qemu-common.h" - -#define TMPSHMSIZE (1 << 20) -static char *tmpshm; -static void *tmpshmem; -static char *tmpdir; -static char *tmpserver; - -static void save_fn(QPCIDevice *dev, int devfn, void *data) -{ - QPCIDevice **pdev = (QPCIDevice **) data; - - *pdev = dev; -} - -static QPCIDevice *get_device(QPCIBus *pcibus) -{ - QPCIDevice *dev; - - dev = NULL; - qpci_device_foreach(pcibus, 0x1af4, 0x1110, save_fn, &dev); - g_assert(dev != NULL); - - return dev; -} - -typedef struct _IVState { - QOSState *qs; - QPCIBar reg_bar, mem_bar; - QPCIDevice *dev; -} IVState; - -enum Reg { - INTRMASK = 0, - INTRSTATUS = 4, - IVPOSITION = 8, - DOORBELL = 12, -}; - -static const char* reg2str(enum Reg reg) { - switch (reg) { - case INTRMASK: - return "IntrMask"; - case INTRSTATUS: - return "IntrStatus"; - case IVPOSITION: - return "IVPosition"; - case DOORBELL: - return "DoorBell"; - default: - return NULL; - } -} - -static inline unsigned in_reg(IVState *s, enum Reg reg) -{ - const char *name = reg2str(reg); - unsigned res; - - res = qpci_io_readl(s->dev, s->reg_bar, reg); - g_test_message("*%s -> %x\n", name, res); - - return res; -} - -static inline void out_reg(IVState *s, enum Reg reg, unsigned v) -{ - const char *name = reg2str(reg); - - g_test_message("%x -> *%s\n", v, name); - qpci_io_writel(s->dev, s->reg_bar, reg, v); -} - -static inline void read_mem(IVState *s, uint64_t off, void *buf, size_t len) -{ - qpci_memread(s->dev, s->mem_bar, off, buf, len); -} - -static inline void write_mem(IVState *s, uint64_t off, - const void *buf, size_t len) -{ - qpci_memwrite(s->dev, s->mem_bar, off, buf, len); -} - -static void cleanup_vm(IVState *s) -{ - assert(!global_qtest); - g_free(s->dev); - qtest_shutdown(s->qs); -} - -static void setup_vm_cmd(IVState *s, const char *cmd, bool msix) -{ - uint64_t barsize; - const char *arch = qtest_get_arch(); - - if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) { - s->qs = qtest_pc_boot(cmd); - } else if (strcmp(arch, "ppc64") == 0) { - s->qs = qtest_spapr_boot(cmd); - } else { - g_printerr("ivshmem-test tests are only available on x86 or ppc64\n"); - exit(EXIT_FAILURE); - } - s->dev = get_device(s->qs->pcibus); - - s->reg_bar = qpci_iomap(s->dev, 0, &barsize); - g_assert_cmpuint(barsize, ==, 256); - - if (msix) { - qpci_msix_enable(s->dev); - } - - s->mem_bar = qpci_iomap(s->dev, 2, &barsize); - g_assert_cmpuint(barsize, ==, TMPSHMSIZE); - - qpci_device_enable(s->dev); -} - -static void setup_vm(IVState *s) -{ - char *cmd = g_strdup_printf("-object memory-backend-file" - ",id=mb1,size=1M,share,mem-path=/dev/shm%s" - " -device ivshmem-plain,memdev=mb1", tmpshm); - - setup_vm_cmd(s, cmd, false); - - g_free(cmd); -} - -static void test_ivshmem_single(void) -{ - IVState state, *s; - uint32_t data[1024]; - int i; - - setup_vm(&state); - s = &state; - - /* initial state of readable registers */ - g_assert_cmpuint(in_reg(s, INTRMASK), ==, 0); - g_assert_cmpuint(in_reg(s, INTRSTATUS), ==, 0); - g_assert_cmpuint(in_reg(s, IVPOSITION), ==, 0); - - /* trigger interrupt via registers */ - out_reg(s, INTRMASK, 0xffffffff); - g_assert_cmpuint(in_reg(s, INTRMASK), ==, 0xffffffff); - out_reg(s, INTRSTATUS, 1); - /* check interrupt status */ - g_assert_cmpuint(in_reg(s, INTRSTATUS), ==, 1); - /* reading clears */ - g_assert_cmpuint(in_reg(s, INTRSTATUS), ==, 0); - /* TODO intercept actual interrupt (needs qtest work) */ - - /* invalid register access */ - out_reg(s, IVPOSITION, 1); - in_reg(s, DOORBELL); - - /* ring the (non-functional) doorbell */ - out_reg(s, DOORBELL, 8 << 16); - - /* write shared memory */ - for (i = 0; i < G_N_ELEMENTS(data); i++) { - data[i] = i; - } - write_mem(s, 0, data, sizeof(data)); - - /* verify write */ - for (i = 0; i < G_N_ELEMENTS(data); i++) { - g_assert_cmpuint(((uint32_t *)tmpshmem)[i], ==, i); - } - - /* read it back and verify read */ - memset(data, 0, sizeof(data)); - read_mem(s, 0, data, sizeof(data)); - for (i = 0; i < G_N_ELEMENTS(data); i++) { - g_assert_cmpuint(data[i], ==, i); - } - - cleanup_vm(s); -} - -static void test_ivshmem_pair(void) -{ - IVState state1, state2, *s1, *s2; - char *data; - int i; - - setup_vm(&state1); - s1 = &state1; - setup_vm(&state2); - s2 = &state2; - - data = g_malloc0(TMPSHMSIZE); - - /* host write, guest 1 & 2 read */ - memset(tmpshmem, 0x42, TMPSHMSIZE); - read_mem(s1, 0, data, TMPSHMSIZE); - for (i = 0; i < TMPSHMSIZE; i++) { - g_assert_cmpuint(data[i], ==, 0x42); - } - read_mem(s2, 0, data, TMPSHMSIZE); - for (i = 0; i < TMPSHMSIZE; i++) { - g_assert_cmpuint(data[i], ==, 0x42); - } - - /* guest 1 write, guest 2 read */ - memset(data, 0x43, TMPSHMSIZE); - write_mem(s1, 0, data, TMPSHMSIZE); - memset(data, 0, TMPSHMSIZE); - read_mem(s2, 0, data, TMPSHMSIZE); - for (i = 0; i < TMPSHMSIZE; i++) { - g_assert_cmpuint(data[i], ==, 0x43); - } - - /* guest 2 write, guest 1 read */ - memset(data, 0x44, TMPSHMSIZE); - write_mem(s2, 0, data, TMPSHMSIZE); - memset(data, 0, TMPSHMSIZE); - read_mem(s1, 0, data, TMPSHMSIZE); - for (i = 0; i < TMPSHMSIZE; i++) { - g_assert_cmpuint(data[i], ==, 0x44); - } - - cleanup_vm(s1); - cleanup_vm(s2); - g_free(data); -} - -typedef struct ServerThread { - GThread *thread; - IvshmemServer *server; - int pipe[2]; /* to handle quit */ -} ServerThread; - -static void *server_thread(void *data) -{ - ServerThread *t = data; - IvshmemServer *server = t->server; - - while (true) { - fd_set fds; - int maxfd, ret; - - FD_ZERO(&fds); - FD_SET(t->pipe[0], &fds); - maxfd = t->pipe[0] + 1; - - ivshmem_server_get_fds(server, &fds, &maxfd); - - ret = select(maxfd, &fds, NULL, NULL, NULL); - - if (ret < 0) { - if (errno == EINTR) { - continue; - } - - g_critical("select error: %s\n", strerror(errno)); - break; - } - if (ret == 0) { - continue; - } - - if (FD_ISSET(t->pipe[0], &fds)) { - break; - } - - if (ivshmem_server_handle_fds(server, &fds, maxfd) < 0) { - g_critical("ivshmem_server_handle_fds() failed\n"); - break; - } - } - - return NULL; -} - -static void setup_vm_with_server(IVState *s, int nvectors, bool msi) -{ - char *cmd = g_strdup_printf("-chardev socket,id=chr0,path=%s,nowait " - "-device ivshmem%s,chardev=chr0,vectors=%d", - tmpserver, - msi ? "-doorbell" : ",size=1M,msi=off", - nvectors); - - setup_vm_cmd(s, cmd, msi); - - g_free(cmd); -} - -static void test_ivshmem_server(bool msi) -{ - IVState state1, state2, *s1, *s2; - ServerThread thread; - IvshmemServer server; - int ret, vm1, vm2; - int nvectors = 2; - guint64 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; - - ret = ivshmem_server_init(&server, tmpserver, tmpshm, true, - TMPSHMSIZE, nvectors, - g_test_verbose()); - g_assert_cmpint(ret, ==, 0); - - ret = ivshmem_server_start(&server); - g_assert_cmpint(ret, ==, 0); - - thread.server = &server; - ret = pipe(thread.pipe); - g_assert_cmpint(ret, ==, 0); - thread.thread = g_thread_new("ivshmem-server", server_thread, &thread); - g_assert(thread.thread != NULL); - - setup_vm_with_server(&state1, nvectors, msi); - s1 = &state1; - setup_vm_with_server(&state2, nvectors, msi); - s2 = &state2; - - /* check got different VM ids */ - vm1 = in_reg(s1, IVPOSITION); - vm2 = in_reg(s2, IVPOSITION); - g_assert_cmpint(vm1, >=, 0); - g_assert_cmpint(vm2, >=, 0); - g_assert_cmpint(vm1, !=, vm2); - - /* check number of MSI-X vectors */ - if (msi) { - ret = qpci_msix_table_size(s1->dev); - g_assert_cmpuint(ret, ==, nvectors); - } - - /* TODO test behavior before MSI-X is enabled */ - - /* ping vm2 -> vm1 on vector 0 */ - if (msi) { - ret = qpci_msix_pending(s1->dev, 0); - g_assert_cmpuint(ret, ==, 0); - } else { - g_assert_cmpuint(in_reg(s1, INTRSTATUS), ==, 0); - } - out_reg(s2, DOORBELL, vm1 << 16); - do { - g_usleep(10000); - ret = msi ? qpci_msix_pending(s1->dev, 0) : in_reg(s1, INTRSTATUS); - } while (ret == 0 && g_get_monotonic_time() < end_time); - g_assert_cmpuint(ret, !=, 0); - - /* ping vm1 -> vm2 on vector 1 */ - if (msi) { - ret = qpci_msix_pending(s2->dev, 1); - g_assert_cmpuint(ret, ==, 0); - } else { - g_assert_cmpuint(in_reg(s2, INTRSTATUS), ==, 0); - } - out_reg(s1, DOORBELL, vm2 << 16 | 1); - do { - g_usleep(10000); - ret = msi ? qpci_msix_pending(s2->dev, 1) : in_reg(s2, INTRSTATUS); - } while (ret == 0 && g_get_monotonic_time() < end_time); - g_assert_cmpuint(ret, !=, 0); - - cleanup_vm(s2); - cleanup_vm(s1); - - if (qemu_write_full(thread.pipe[1], "q", 1) != 1) { - g_error("qemu_write_full: %s", g_strerror(errno)); - } - - g_thread_join(thread.thread); - - ivshmem_server_close(&server); - close(thread.pipe[1]); - close(thread.pipe[0]); -} - -static void test_ivshmem_server_msi(void) -{ - test_ivshmem_server(true); -} - -static void test_ivshmem_server_irq(void) -{ - test_ivshmem_server(false); -} - -#define PCI_SLOT_HP 0x06 - -static void test_ivshmem_hotplug(void) -{ - const char *arch = qtest_get_arch(); - - qtest_start(""); - - qtest_qmp_device_add("ivshmem", - "iv1", "{'addr': %s, 'shm': %s, 'size': '1M'}", - stringify(PCI_SLOT_HP), tmpshm); - if (strcmp(arch, "ppc64") != 0) { - qpci_unplug_acpi_device_test("iv1", PCI_SLOT_HP); - } - - qtest_end(); -} - -static void test_ivshmem_memdev(void) -{ - IVState state; - - /* just for the sake of checking memory-backend property */ - setup_vm_cmd(&state, "-object memory-backend-ram,size=1M,id=mb1" - " -device ivshmem-plain,memdev=mb1", false); - - cleanup_vm(&state); -} - -static void cleanup(void) -{ - if (tmpshmem) { - munmap(tmpshmem, TMPSHMSIZE); - tmpshmem = NULL; - } - - if (tmpshm) { - shm_unlink(tmpshm); - g_free(tmpshm); - tmpshm = NULL; - } - - if (tmpserver) { - g_unlink(tmpserver); - g_free(tmpserver); - tmpserver = NULL; - } - - if (tmpdir) { - g_rmdir(tmpdir); - tmpdir = NULL; - } -} - -static void abrt_handler(void *data) -{ - cleanup(); -} - -static gchar *mktempshm(int size, int *fd) -{ - while (true) { - gchar *name; - - name = g_strdup_printf("/qtest-%u-%u", getpid(), g_random_int()); - *fd = shm_open(name, O_CREAT|O_RDWR|O_EXCL, - S_IRWXU|S_IRWXG|S_IRWXO); - if (*fd > 0) { - g_assert(ftruncate(*fd, size) == 0); - return name; - } - - g_free(name); - - if (errno != EEXIST) { - perror("shm_open"); - return NULL; - } - } -} - -int main(int argc, char **argv) -{ - int ret, fd; - const char *arch = qtest_get_arch(); - gchar dir[] = "/tmp/ivshmem-test.XXXXXX"; - - g_test_init(&argc, &argv, NULL); - - qtest_add_abrt_handler(abrt_handler, NULL); - /* shm */ - tmpshm = mktempshm(TMPSHMSIZE, &fd); - if (!tmpshm) { - goto out; - } - tmpshmem = mmap(0, TMPSHMSIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); - g_assert(tmpshmem != MAP_FAILED); - /* server */ - if (mkdtemp(dir) == NULL) { - g_error("mkdtemp: %s", g_strerror(errno)); - } - tmpdir = dir; - tmpserver = g_strconcat(tmpdir, "/server", NULL); - - qtest_add_func("/ivshmem/single", test_ivshmem_single); - qtest_add_func("/ivshmem/hotplug", test_ivshmem_hotplug); - qtest_add_func("/ivshmem/memdev", test_ivshmem_memdev); - if (g_test_slow()) { - qtest_add_func("/ivshmem/pair", test_ivshmem_pair); - if (strcmp(arch, "ppc64") != 0) { - qtest_add_func("/ivshmem/server-msi", test_ivshmem_server_msi); - qtest_add_func("/ivshmem/server-irq", test_ivshmem_server_irq); - } - } - -out: - ret = g_test_run(); - cleanup(); - return ret; -} |