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32 #include "libqos/pci-pc.h"
33 #include "libqos/malloc-pc.h"
35 #include "qemu-common.h"
36 #include "hw/pci/pci_ids.h"
37 #include "hw/pci/pci_regs.h"
39 #define TEST_IMAGE_SIZE 64 * 1024 * 1024
42 #define IDE_PCI_FUNC 1
44 #define IDE_BASE 0x1f0
45 #define IDE_PRIMARY_IRQ 14
80 CMD_FLUSH_CACHE = 0xe7,
89 BM_CMD_WRITE = 0x8, /* write = from device to memory */
99 PRDT_EOT = 0x80000000,
102 #define assert_bit_set(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
103 #define assert_bit_clear(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
105 static QPCIBus *pcibus = NULL;
106 static QGuestAllocator *guest_malloc;
108 static char tmp_path[] = "/tmp/qtest.XXXXXX";
110 static void ide_test_start(const char *cmdline_fmt, ...)
115 va_start(ap, cmdline_fmt);
116 cmdline = g_strdup_vprintf(cmdline_fmt, ap);
119 qtest_start(cmdline);
120 qtest_irq_intercept_in(global_qtest, "ioapic");
121 guest_malloc = pc_alloc_init();
124 static void ide_test_quit(void)
129 static QPCIDevice *get_pci_device(uint16_t *bmdma_base)
132 uint16_t vendor_id, device_id;
135 pcibus = qpci_init_pc();
138 /* Find PCI device and verify it's the right one */
139 dev = qpci_device_find(pcibus, QPCI_DEVFN(IDE_PCI_DEV, IDE_PCI_FUNC));
140 g_assert(dev != NULL);
142 vendor_id = qpci_config_readw(dev, PCI_VENDOR_ID);
143 device_id = qpci_config_readw(dev, PCI_DEVICE_ID);
144 g_assert(vendor_id == PCI_VENDOR_ID_INTEL);
145 g_assert(device_id == PCI_DEVICE_ID_INTEL_82371SB_1);
148 *bmdma_base = (uint16_t)(uintptr_t) qpci_iomap(dev, 4);
150 qpci_device_enable(dev);
155 static void free_pci_device(QPCIDevice *dev)
157 /* libqos doesn't have a function for this, so free it manually */
161 typedef struct PrdtEntry {
164 } QEMU_PACKED PrdtEntry;
166 #define assert_bit_set(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
167 #define assert_bit_clear(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
169 static int send_dma_request(int cmd, uint64_t sector, int nb_sectors,
170 PrdtEntry *prdt, int prdt_entries)
174 uintptr_t guest_prdt;
180 dev = get_pci_device(&bmdma_base);
193 g_assert_not_reached();
196 if (flags & CMDF_NO_BM) {
197 qpci_config_writew(dev, PCI_COMMAND,
198 PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
201 /* Select device 0 */
202 outb(IDE_BASE + reg_device, 0 | LBA);
204 /* Stop any running transfer, clear any pending interrupt */
205 outb(bmdma_base + bmreg_cmd, 0);
206 outb(bmdma_base + bmreg_status, BM_STS_INTR);
209 len = sizeof(*prdt) * prdt_entries;
210 guest_prdt = guest_alloc(guest_malloc, len);
211 memwrite(guest_prdt, prdt, len);
212 outl(bmdma_base + bmreg_prdt, guest_prdt);
214 /* ATA DMA command */
215 outb(IDE_BASE + reg_nsectors, nb_sectors);
217 outb(IDE_BASE + reg_lba_low, sector & 0xff);
218 outb(IDE_BASE + reg_lba_middle, (sector >> 8) & 0xff);
219 outb(IDE_BASE + reg_lba_high, (sector >> 16) & 0xff);
221 outb(IDE_BASE + reg_command, cmd);
223 /* Start DMA transfer */
224 outb(bmdma_base + bmreg_cmd, BM_CMD_START | (from_dev ? BM_CMD_WRITE : 0));
226 if (flags & CMDF_ABORT) {
227 outb(bmdma_base + bmreg_cmd, 0);
230 /* Wait for the DMA transfer to complete */
232 status = inb(bmdma_base + bmreg_status);
233 } while ((status & (BM_STS_ACTIVE | BM_STS_INTR)) == BM_STS_ACTIVE);
235 g_assert_cmpint(get_irq(IDE_PRIMARY_IRQ), ==, !!(status & BM_STS_INTR));
237 /* Check IDE status code */
238 assert_bit_set(inb(IDE_BASE + reg_status), DRDY);
239 assert_bit_clear(inb(IDE_BASE + reg_status), BSY | DRQ);
241 /* Reading the status register clears the IRQ */
242 g_assert(!get_irq(IDE_PRIMARY_IRQ));
244 /* Stop DMA transfer if still active */
245 if (status & BM_STS_ACTIVE) {
246 outb(bmdma_base + bmreg_cmd, 0);
249 free_pci_device(dev);
254 static void test_bmdma_simple_rw(void)
260 uintptr_t guest_buf = guest_alloc(guest_malloc, len);
264 .addr = cpu_to_le32(guest_buf),
265 .size = cpu_to_le32(len | PRDT_EOT),
270 cmpbuf = g_malloc(len);
272 /* Write 0x55 pattern to sector 0 */
273 memset(buf, 0x55, len);
274 memwrite(guest_buf, buf, len);
276 status = send_dma_request(CMD_WRITE_DMA, 0, 1, prdt, ARRAY_SIZE(prdt));
277 g_assert_cmphex(status, ==, BM_STS_INTR);
278 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
280 /* Write 0xaa pattern to sector 1 */
281 memset(buf, 0xaa, len);
282 memwrite(guest_buf, buf, len);
284 status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt, ARRAY_SIZE(prdt));
285 g_assert_cmphex(status, ==, BM_STS_INTR);
286 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
288 /* Read and verify 0x55 pattern in sector 0 */
289 memset(cmpbuf, 0x55, len);
291 status = send_dma_request(CMD_READ_DMA, 0, 1, prdt, ARRAY_SIZE(prdt));
292 g_assert_cmphex(status, ==, BM_STS_INTR);
293 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
295 memread(guest_buf, buf, len);
296 g_assert(memcmp(buf, cmpbuf, len) == 0);
298 /* Read and verify 0xaa pattern in sector 1 */
299 memset(cmpbuf, 0xaa, len);
301 status = send_dma_request(CMD_READ_DMA, 1, 1, prdt, ARRAY_SIZE(prdt));
302 g_assert_cmphex(status, ==, BM_STS_INTR);
303 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
305 memread(guest_buf, buf, len);
306 g_assert(memcmp(buf, cmpbuf, len) == 0);
313 static void test_bmdma_short_prdt(void)
320 .size = cpu_to_le32(0x10 | PRDT_EOT),
325 status = send_dma_request(CMD_READ_DMA, 0, 1,
326 prdt, ARRAY_SIZE(prdt));
327 g_assert_cmphex(status, ==, 0);
328 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
330 /* Abort the request before it completes */
331 status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
332 prdt, ARRAY_SIZE(prdt));
333 g_assert_cmphex(status, ==, 0);
334 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
337 static void test_bmdma_long_prdt(void)
344 .size = cpu_to_le32(0x1000 | PRDT_EOT),
349 status = send_dma_request(CMD_READ_DMA, 0, 1,
350 prdt, ARRAY_SIZE(prdt));
351 g_assert_cmphex(status, ==, BM_STS_ACTIVE | BM_STS_INTR);
352 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
354 /* Abort the request before it completes */
355 status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
356 prdt, ARRAY_SIZE(prdt));
357 g_assert_cmphex(status, ==, BM_STS_INTR);
358 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
361 static void test_bmdma_no_busmaster(void)
365 /* No PRDT_EOT, each entry addr 0/size 64k, and in theory qemu shouldn't be
366 * able to access it anyway because the Bus Master bit in the PCI command
367 * register isn't set. This is complete nonsense, but it used to be pretty
368 * good at confusing and occasionally crashing qemu. */
369 PrdtEntry prdt[4096] = { };
371 status = send_dma_request(CMD_READ_DMA | CMDF_NO_BM, 0, 512,
372 prdt, ARRAY_SIZE(prdt));
374 /* Not entirely clear what the expected result is, but this is what we get
375 * in practice. At least we want to be aware of any changes. */
376 g_assert_cmphex(status, ==, BM_STS_ACTIVE | BM_STS_INTR);
377 assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
380 static void test_bmdma_setup(void)
383 "-drive file=%s,if=ide,serial=%s,cache=writeback "
384 "-global ide-hd.ver=%s",
385 tmp_path, "testdisk", "version");
388 static void test_bmdma_teardown(void)
393 static void string_cpu_to_be16(uint16_t *s, size_t bytes)
395 g_assert((bytes & 1) == 0);
399 *s = cpu_to_be16(*s);
404 static void test_identify(void)
412 "-drive file=%s,if=ide,serial=%s,cache=writeback "
413 "-global ide-hd.ver=%s",
414 tmp_path, "testdisk", "version");
416 /* IDENTIFY command on device 0*/
417 outb(IDE_BASE + reg_device, 0);
418 outb(IDE_BASE + reg_command, CMD_IDENTIFY);
420 /* Read in the IDENTIFY buffer and check registers */
421 data = inb(IDE_BASE + reg_device);
422 g_assert_cmpint(data & DEV, ==, 0);
424 for (i = 0; i < 256; i++) {
425 data = inb(IDE_BASE + reg_status);
426 assert_bit_set(data, DRDY | DRQ);
427 assert_bit_clear(data, BSY | DF | ERR);
429 ((uint16_t*) buf)[i] = inw(IDE_BASE + reg_data);
432 data = inb(IDE_BASE + reg_status);
433 assert_bit_set(data, DRDY);
434 assert_bit_clear(data, BSY | DF | ERR | DRQ);
436 /* Check serial number/version in the buffer */
437 string_cpu_to_be16(&buf[10], 20);
438 ret = memcmp(&buf[10], "testdisk ", 20);
441 string_cpu_to_be16(&buf[23], 8);
442 ret = memcmp(&buf[23], "version ", 8);
445 /* Write cache enabled bit */
446 assert_bit_set(buf[85], 0x20);
451 static void test_flush(void)
456 "-drive file=blkdebug::%s,if=ide,cache=writeback",
459 /* Delay the completion of the flush request until we explicitly do it */
460 qmp_discard_response("{'execute':'human-monitor-command', 'arguments': {"
462 " 'qemu-io ide0-hd0 \"break flush_to_os A\"'} }");
464 /* FLUSH CACHE command on device 0*/
465 outb(IDE_BASE + reg_device, 0);
466 outb(IDE_BASE + reg_command, CMD_FLUSH_CACHE);
468 /* Check status while request is in flight*/
469 data = inb(IDE_BASE + reg_status);
470 assert_bit_set(data, BSY | DRDY);
471 assert_bit_clear(data, DF | ERR | DRQ);
473 /* Complete the command */
474 qmp_discard_response("{'execute':'human-monitor-command', 'arguments': {"
476 " 'qemu-io ide0-hd0 \"resume A\"'} }");
478 /* Check registers */
479 data = inb(IDE_BASE + reg_device);
480 g_assert_cmpint(data & DEV, ==, 0);
483 data = inb(IDE_BASE + reg_status);
484 } while (data & BSY);
486 assert_bit_set(data, DRDY);
487 assert_bit_clear(data, BSY | DF | ERR | DRQ);
492 int main(int argc, char **argv)
494 const char *arch = qtest_get_arch();
498 /* Check architecture */
499 if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
500 g_test_message("Skipping test for non-x86\n");
504 /* Create a temporary raw image */
505 fd = mkstemp(tmp_path);
507 ret = ftruncate(fd, TEST_IMAGE_SIZE);
512 g_test_init(&argc, &argv, NULL);
514 qtest_add_func("/ide/identify", test_identify);
516 qtest_add_func("/ide/bmdma/setup", test_bmdma_setup);
517 qtest_add_func("/ide/bmdma/simple_rw", test_bmdma_simple_rw);
518 qtest_add_func("/ide/bmdma/short_prdt", test_bmdma_short_prdt);
519 qtest_add_func("/ide/bmdma/long_prdt", test_bmdma_long_prdt);
520 qtest_add_func("/ide/bmdma/no_busmaster", test_bmdma_no_busmaster);
521 qtest_add_func("/ide/bmdma/teardown", test_bmdma_teardown);
523 qtest_add_func("/ide/flush", test_flush);