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Diffstat (limited to 'tests/fdc-test.c')
| -rw-r--r-- | tests/fdc-test.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/tests/fdc-test.c b/tests/fdc-test.c new file mode 100644 index 0000000..5b5dd74 --- /dev/null +++ b/tests/fdc-test.c @@ -0,0 +1,195 @@ +/* + * 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_SEEK = 0x0f, +}; + +enum { + RQM = 0x80, + DIO = 0x40, + + DSKCHG = 0x80, +}; + +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 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); +} + +static void ack_irq(void) +{ + g_assert(get_irq(FLOPPY_IRQ)); + floppy_send(CMD_SENSE_INT); + floppy_recv(); + floppy_recv(); + g_assert(!get_irq(FLOPPY_IRQ)); +} + +static void send_step_pulse(void) +{ + int drive = 0; + int head = 0; + static int cyl = 0; + + floppy_send(CMD_SEEK); + floppy_send(head << 2 | drive); + g_assert(!get_irq(FLOPPY_IRQ)); + floppy_send(cyl); + ack_irq(); + + cyl = (cyl + 1) % 4; +} + +static void test_media_change(void) +{ + uint8_t dir; + + /* Media changed bit must be up-to-date after step pulse. Do two SEEKs + * because we may already happen to be on the right cylinder initially. */ + send_step_pulse(); + send_step_pulse(); + dir = inb(FLOPPY_BASE + reg_dir); + assert_bit_clear(dir, DSKCHG); + + /* Eject the floppy and check that DSKCHG is set. Reading it out doesn't + * reset the bit. */ + qmp("{'execute':'eject', 'arguments':{ 'device':'floppy0' }}"); + qmp(""); /* 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_step_pulse(); + dir = inb(FLOPPY_BASE + reg_dir); + assert_bit_set(dir, DSKCHG); + dir = inb(FLOPPY_BASE + reg_dir); + assert_bit_set(dir, DSKCHG); + + /* And then insert it again. DSKCHK should not be reset until a step pulse + * is sent. */ + qmp("{'execute':'change', 'arguments':{ 'device':'floppy0', " + "'target': '%s' }}", test_image); + qmp(""); /* ignore event (FIXME open -> open transition?!) */ + qmp(""); /* 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_step_pulse(); + dir = inb(FLOPPY_BASE + reg_dir); + assert_bit_clear(dir, DSKCHG); + dir = inb(FLOPPY_BASE + reg_dir); + assert_bit_clear(dir, DSKCHG); +} + +int main(int argc, char **argv) +{ + const char *arch = qtest_get_arch(); + char *cmdline; + 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); + + cmdline = g_strdup_printf("-vnc none " + "-drive file=%s,if=floppy,cache=writeback ", + test_image); + + qtest_start(cmdline); + qtest_irq_intercept_in(global_qtest, "ioapic"); + qtest_add_func("/fdc/media_change", test_media_change); + + ret = g_test_run(); + + /* Cleanup */ + qtest_quit(global_qtest); + unlink(test_image); + + return ret; +} |