--- /dev/null
+/*
+ * Floppy test cases.
+ *
+ * Copyright (c) 2012 Kevin Wolf <kwolf@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <glib.h>
+
+#include "libqtest.h"
+#include "qemu-common.h"
+
+#define TEST_IMAGE_SIZE 1440 * 1024
+
+#define FLOPPY_BASE 0x3f0
+#define FLOPPY_IRQ 6
+
+enum {
+ reg_sra = 0x0,
+ reg_srb = 0x1,
+ reg_dor = 0x2,
+ reg_msr = 0x4,
+ reg_dsr = 0x4,
+ reg_fifo = 0x5,
+ reg_dir = 0x7,
+};
+
+enum {
+ CMD_SENSE_INT = 0x08,
+ CMD_READ_ID = 0x0a,
+ CMD_SEEK = 0x0f,
+ CMD_VERIFY = 0x16,
+ CMD_READ = 0xe6,
+ CMD_RELATIVE_SEEK_OUT = 0x8f,
+ CMD_RELATIVE_SEEK_IN = 0xcf,
+};
+
+enum {
+ BUSY = 0x10,
+ NONDMA = 0x20,
+ RQM = 0x80,
+ DIO = 0x40,
+
+ DSKCHG = 0x80,
+};
+
+static char test_image[] = "/tmp/qtest.XXXXXX";
+
+#define assert_bit_set(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
+#define assert_bit_clear(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
+
+static uint8_t base = 0x70;
+
+enum {
+ CMOS_FLOPPY = 0x10,
+};
+
+static void floppy_send(uint8_t byte)
+{
+ uint8_t msr;
+
+ msr = inb(FLOPPY_BASE + reg_msr);
+ assert_bit_set(msr, RQM);
+ assert_bit_clear(msr, DIO);
+
+ outb(FLOPPY_BASE + reg_fifo, byte);
+}
+
+static uint8_t floppy_recv(void)
+{
+ uint8_t msr;
+
+ msr = inb(FLOPPY_BASE + reg_msr);
+ assert_bit_set(msr, RQM | DIO);
+
+ return inb(FLOPPY_BASE + reg_fifo);
+}
+
+/* pcn: Present Cylinder Number */
+static void ack_irq(uint8_t *pcn)
+{
+ uint8_t ret;
+
+ g_assert(get_irq(FLOPPY_IRQ));
+ floppy_send(CMD_SENSE_INT);
+ floppy_recv();
+
+ ret = floppy_recv();
+ if (pcn != NULL) {
+ *pcn = ret;
+ }
+
+ g_assert(!get_irq(FLOPPY_IRQ));
+}
+
+static uint8_t send_read_command(uint8_t cmd)
+{
+ uint8_t drive = 0;
+ uint8_t head = 0;
+ uint8_t cyl = 0;
+ uint8_t sect_addr = 1;
+ uint8_t sect_size = 2;
+ uint8_t eot = 1;
+ uint8_t gap = 0x1b;
+ uint8_t gpl = 0xff;
+
+ uint8_t msr = 0;
+ uint8_t st0;
+
+ uint8_t ret = 0;
+
+ floppy_send(cmd);
+ floppy_send(head << 2 | drive);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(cyl);
+ floppy_send(head);
+ floppy_send(sect_addr);
+ floppy_send(sect_size);
+ floppy_send(eot);
+ floppy_send(gap);
+ floppy_send(gpl);
+
+ uint8_t i = 0;
+ uint8_t n = 2;
+ for (; i < n; i++) {
+ msr = inb(FLOPPY_BASE + reg_msr);
+ if (msr == 0xd0) {
+ break;
+ }
+ sleep(1);
+ }
+
+ if (i >= n) {
+ return 1;
+ }
+
+ st0 = floppy_recv();
+ if (st0 != 0x40) {
+ ret = 1;
+ }
+
+ floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ floppy_recv();
+
+ return ret;
+}
+
+static uint8_t send_read_no_dma_command(int nb_sect, uint8_t expected_st0)
+{
+ uint8_t drive = 0;
+ uint8_t head = 0;
+ uint8_t cyl = 0;
+ uint8_t sect_addr = 1;
+ uint8_t sect_size = 2;
+ uint8_t eot = nb_sect;
+ uint8_t gap = 0x1b;
+ uint8_t gpl = 0xff;
+
+ uint8_t msr = 0;
+ uint8_t st0;
+
+ uint8_t ret = 0;
+
+ floppy_send(CMD_READ);
+ floppy_send(head << 2 | drive);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(cyl);
+ floppy_send(head);
+ floppy_send(sect_addr);
+ floppy_send(sect_size);
+ floppy_send(eot);
+ floppy_send(gap);
+ floppy_send(gpl);
+
+ uint16_t i = 0;
+ uint8_t n = 2;
+ for (; i < n; i++) {
+ msr = inb(FLOPPY_BASE + reg_msr);
+ if (msr == (BUSY | NONDMA | DIO | RQM)) {
+ break;
+ }
+ sleep(1);
+ }
+
+ if (i >= n) {
+ return 1;
+ }
+
+ /* Non-DMA mode */
+ for (i = 0; i < 512 * 2 * nb_sect; i++) {
+ msr = inb(FLOPPY_BASE + reg_msr);
+ assert_bit_set(msr, BUSY | RQM | DIO);
+ inb(FLOPPY_BASE + reg_fifo);
+ }
+
+ msr = inb(FLOPPY_BASE + reg_msr);
+ assert_bit_set(msr, BUSY | RQM | DIO);
+ g_assert(get_irq(FLOPPY_IRQ));
+
+ st0 = floppy_recv();
+ if (st0 != expected_st0) {
+ ret = 1;
+ }
+
+ floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ g_assert(get_irq(FLOPPY_IRQ));
+ floppy_recv();
+
+ /* Check that we're back in command phase */
+ msr = inb(FLOPPY_BASE + reg_msr);
+ assert_bit_clear(msr, BUSY | DIO);
+ assert_bit_set(msr, RQM);
+ g_assert(!get_irq(FLOPPY_IRQ));
+
+ return ret;
+}
+
+static void send_seek(int cyl)
+{
+ int drive = 0;
+ int head = 0;
+
+ floppy_send(CMD_SEEK);
+ floppy_send(head << 2 | drive);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(cyl);
+ ack_irq(NULL);
+}
+
+static uint8_t cmos_read(uint8_t reg)
+{
+ outb(base + 0, reg);
+ return inb(base + 1);
+}
+
+static void test_cmos(void)
+{
+ uint8_t cmos;
+
+ cmos = cmos_read(CMOS_FLOPPY);
+ g_assert(cmos == 0x40);
+}
+
+static void test_no_media_on_start(void)
+{
+ uint8_t dir;
+
+ /* Media changed bit must be set all time after start if there is
+ * no media in drive. */
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ send_seek(1);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+}
+
+static void test_read_without_media(void)
+{
+ uint8_t ret;
+
+ ret = send_read_command(CMD_READ);
+ g_assert(ret == 0);
+}
+
+static void test_media_insert(void)
+{
+ uint8_t dir;
+
+ /* Insert media in drive. DSKCHK should not be reset until a step pulse
+ * is sent. */
+ qmp_discard_response("{'execute':'change', 'arguments':{"
+ " 'device':'floppy0', 'target': %s, 'arg': 'raw' }}",
+ test_image);
+ qmp_discard_response(""); /* ignore event
+ (FIXME open -> open transition?!) */
+ qmp_discard_response(""); /* ignore event */
+
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+
+ send_seek(0);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+
+ /* Step to next track should clear DSKCHG bit. */
+ send_seek(1);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_clear(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_clear(dir, DSKCHG);
+}
+
+static void test_media_change(void)
+{
+ uint8_t dir;
+
+ test_media_insert();
+
+ /* Eject the floppy and check that DSKCHG is set. Reading it out doesn't
+ * reset the bit. */
+ qmp_discard_response("{'execute':'eject', 'arguments':{"
+ " 'device':'floppy0' }}");
+ qmp_discard_response(""); /* ignore event */
+
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+
+ send_seek(0);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+
+ send_seek(1);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+ dir = inb(FLOPPY_BASE + reg_dir);
+ assert_bit_set(dir, DSKCHG);
+}
+
+static void test_sense_interrupt(void)
+{
+ int drive = 0;
+ int head = 0;
+ int cyl = 0;
+ int ret = 0;
+
+ floppy_send(CMD_SENSE_INT);
+ ret = floppy_recv();
+ g_assert(ret == 0x80);
+
+ floppy_send(CMD_SEEK);
+ floppy_send(head << 2 | drive);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(cyl);
+
+ floppy_send(CMD_SENSE_INT);
+ ret = floppy_recv();
+ g_assert(ret == 0x20);
+ floppy_recv();
+}
+
+static void test_relative_seek(void)
+{
+ uint8_t drive = 0;
+ uint8_t head = 0;
+ uint8_t cyl = 1;
+ uint8_t pcn;
+
+ /* Send seek to track 0 */
+ send_seek(0);
+
+ /* Send relative seek to increase track by 1 */
+ floppy_send(CMD_RELATIVE_SEEK_IN);
+ floppy_send(head << 2 | drive);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(cyl);
+
+ ack_irq(&pcn);
+ g_assert(pcn == 1);
+
+ /* Send relative seek to decrease track by 1 */
+ floppy_send(CMD_RELATIVE_SEEK_OUT);
+ floppy_send(head << 2 | drive);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(cyl);
+
+ ack_irq(&pcn);
+ g_assert(pcn == 0);
+}
+
+static void test_read_id(void)
+{
+ uint8_t drive = 0;
+ uint8_t head = 0;
+ uint8_t cyl;
+ uint8_t st0;
+ uint8_t msr;
+
+ /* Seek to track 0 and check with READ ID */
+ send_seek(0);
+
+ floppy_send(CMD_READ_ID);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(head << 2 | drive);
+
+ msr = inb(FLOPPY_BASE + reg_msr);
+ if (!get_irq(FLOPPY_IRQ)) {
+ assert_bit_set(msr, BUSY);
+ assert_bit_clear(msr, RQM);
+ }
+
+ while (!get_irq(FLOPPY_IRQ)) {
+ /* qemu involves a timer with READ ID... */
+ clock_step(1000000000LL / 50);
+ }
+
+ msr = inb(FLOPPY_BASE + reg_msr);
+ assert_bit_set(msr, BUSY | RQM | DIO);
+
+ st0 = floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ cyl = floppy_recv();
+ head = floppy_recv();
+ floppy_recv();
+ g_assert(get_irq(FLOPPY_IRQ));
+ floppy_recv();
+ g_assert(!get_irq(FLOPPY_IRQ));
+
+ g_assert_cmpint(cyl, ==, 0);
+ g_assert_cmpint(head, ==, 0);
+ g_assert_cmpint(st0, ==, head << 2);
+
+ /* Seek to track 8 on head 1 and check with READ ID */
+ head = 1;
+ cyl = 8;
+
+ floppy_send(CMD_SEEK);
+ floppy_send(head << 2 | drive);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(cyl);
+ g_assert(get_irq(FLOPPY_IRQ));
+ ack_irq(NULL);
+
+ floppy_send(CMD_READ_ID);
+ g_assert(!get_irq(FLOPPY_IRQ));
+ floppy_send(head << 2 | drive);
+
+ msr = inb(FLOPPY_BASE + reg_msr);
+ if (!get_irq(FLOPPY_IRQ)) {
+ assert_bit_set(msr, BUSY);
+ assert_bit_clear(msr, RQM);
+ }
+
+ while (!get_irq(FLOPPY_IRQ)) {
+ /* qemu involves a timer with READ ID... */
+ clock_step(1000000000LL / 50);
+ }
+
+ msr = inb(FLOPPY_BASE + reg_msr);
+ assert_bit_set(msr, BUSY | RQM | DIO);
+
+ st0 = floppy_recv();
+ floppy_recv();
+ floppy_recv();
+ cyl = floppy_recv();
+ head = floppy_recv();
+ floppy_recv();
+ g_assert(get_irq(FLOPPY_IRQ));
+ floppy_recv();
+ g_assert(!get_irq(FLOPPY_IRQ));
+
+ g_assert_cmpint(cyl, ==, 8);
+ g_assert_cmpint(head, ==, 1);
+ g_assert_cmpint(st0, ==, head << 2);
+}
+
+static void test_read_no_dma_1(void)
+{
+ uint8_t ret;
+
+ outb(FLOPPY_BASE + reg_dor, inb(FLOPPY_BASE + reg_dor) & ~0x08);
+ send_seek(0);
+ ret = send_read_no_dma_command(1, 0x04);
+ g_assert(ret == 0);
+}
+
+static void test_read_no_dma_18(void)
+{
+ uint8_t ret;
+
+ outb(FLOPPY_BASE + reg_dor, inb(FLOPPY_BASE + reg_dor) & ~0x08);
+ send_seek(0);
+ ret = send_read_no_dma_command(18, 0x04);
+ g_assert(ret == 0);
+}
+
+static void test_read_no_dma_19(void)
+{
+ uint8_t ret;
+
+ outb(FLOPPY_BASE + reg_dor, inb(FLOPPY_BASE + reg_dor) & ~0x08);
+ send_seek(0);
+ ret = send_read_no_dma_command(19, 0x20);
+ g_assert(ret == 0);
+}
+
+static void test_verify(void)
+{
+ uint8_t ret;
+
+ ret = send_read_command(CMD_VERIFY);
+ g_assert(ret == 0);
+}
+
+/* success if no crash or abort */
+static void fuzz_registers(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < 1000; i++) {
+ uint8_t reg, val;
+
+ reg = (uint8_t)g_test_rand_int_range(0, 8);
+ val = (uint8_t)g_test_rand_int_range(0, 256);
+
+ outb(FLOPPY_BASE + reg, val);
+ inb(FLOPPY_BASE + reg);
+ }
+}
+
+int main(int argc, char **argv)
+{
+ const char *arch = qtest_get_arch();
+ int fd;
+ int ret;
+
+ /* Check architecture */
+ if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
+ g_test_message("Skipping test for non-x86\n");
+ return 0;
+ }
+
+ /* Create a temporary raw image */
+ fd = mkstemp(test_image);
+ g_assert(fd >= 0);
+ ret = ftruncate(fd, TEST_IMAGE_SIZE);
+ g_assert(ret == 0);
+ close(fd);
+
+ /* Run the tests */
+ g_test_init(&argc, &argv, NULL);
+
+ qtest_start(NULL);
+ qtest_irq_intercept_in(global_qtest, "ioapic");
+ qtest_add_func("/fdc/cmos", test_cmos);
+ qtest_add_func("/fdc/no_media_on_start", test_no_media_on_start);
+ qtest_add_func("/fdc/read_without_media", test_read_without_media);
+ qtest_add_func("/fdc/media_change", test_media_change);
+ qtest_add_func("/fdc/sense_interrupt", test_sense_interrupt);
+ qtest_add_func("/fdc/relative_seek", test_relative_seek);
+ qtest_add_func("/fdc/read_id", test_read_id);
+ qtest_add_func("/fdc/verify", test_verify);
+ qtest_add_func("/fdc/media_insert", test_media_insert);
+ qtest_add_func("/fdc/read_no_dma_1", test_read_no_dma_1);
+ qtest_add_func("/fdc/read_no_dma_18", test_read_no_dma_18);
+ qtest_add_func("/fdc/read_no_dma_19", test_read_no_dma_19);
+ qtest_add_func("/fdc/fuzz-registers", fuzz_registers);
+
+ ret = g_test_run();
+
+ /* Cleanup */
+ qtest_end();
+ unlink(test_image);
+
+ return ret;
+}
Code Review / kvmfornfv.git / blobdiff