diff options
| -rw-r--r-- | tests/ide-test.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/tests/ide-test.c b/tests/ide-test.c index 45036e3..5fc496f 100644 --- a/tests/ide-test.c +++ b/tests/ide-test.c @@ -29,8 +29,12 @@ #include <glib.h> #include "libqtest.h" +#include "libqos/pci-pc.h" +#include "libqos/malloc-pc.h" #include "qemu-common.h" +#include "hw/pci/pci_ids.h" +#include "hw/pci/pci_regs.h" #define TEST_IMAGE_SIZE 64 * 1024 * 1024 @@ -60,12 +64,42 @@ enum { }; enum { + LBA = 0x40, +}; + +enum { + bmreg_cmd = 0x0, + bmreg_status = 0x2, + bmreg_prdt = 0x4, +}; + +enum { + CMD_READ_DMA = 0xc8, + CMD_WRITE_DMA = 0xca, CMD_IDENTIFY = 0xec, }; +enum { + BM_CMD_START = 0x1, + BM_CMD_WRITE = 0x8, /* write = from device to memory */ +}; + +enum { + BM_STS_ACTIVE = 0x1, + BM_STS_ERROR = 0x2, + BM_STS_INTR = 0x4, +}; + +enum { + PRDT_EOT = 0x80000000, +}; + #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 QPCIBus *pcibus = NULL; +static QGuestAllocator *guest_malloc; + static char tmp_path[] = "/tmp/qtest.XXXXXX"; static void ide_test_start(const char *cmdline_fmt, ...) @@ -79,6 +113,7 @@ static void ide_test_start(const char *cmdline_fmt, ...) qtest_start(cmdline); qtest_irq_intercept_in(global_qtest, "ioapic"); + guest_malloc = pc_alloc_init(); } static void ide_test_quit(void) @@ -86,6 +121,188 @@ static void ide_test_quit(void) qtest_quit(global_qtest); } +static QPCIDevice *get_pci_device(uint16_t *bmdma_base) +{ + QPCIDevice *dev; + uint16_t vendor_id, device_id; + + if (!pcibus) { + pcibus = qpci_init_pc(); + } + + /* Find PCI device and verify it's the right one */ + dev = qpci_device_find(pcibus, QPCI_DEVFN(IDE_PCI_DEV, IDE_PCI_FUNC)); + g_assert(dev != NULL); + + vendor_id = qpci_config_readw(dev, PCI_VENDOR_ID); + device_id = qpci_config_readw(dev, PCI_DEVICE_ID); + g_assert(vendor_id == PCI_VENDOR_ID_INTEL); + g_assert(device_id == PCI_DEVICE_ID_INTEL_82371SB_1); + + /* Map bmdma BAR */ + *bmdma_base = (uint16_t)(uintptr_t) qpci_iomap(dev, 4); + + qpci_device_enable(dev); + + return dev; +} + +static void free_pci_device(QPCIDevice *dev) +{ + /* libqos doesn't have a function for this, so free it manually */ + g_free(dev); +} + +typedef struct PrdtEntry { + uint32_t addr; + uint32_t size; +} QEMU_PACKED PrdtEntry; + +#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 int send_dma_request(int cmd, uint64_t sector, int nb_sectors, + PrdtEntry *prdt, int prdt_entries) +{ + QPCIDevice *dev; + uint16_t bmdma_base; + uintptr_t guest_prdt; + size_t len; + bool from_dev; + uint8_t status; + + dev = get_pci_device(&bmdma_base); + + switch (cmd) { + case CMD_READ_DMA: + from_dev = true; + break; + case CMD_WRITE_DMA: + from_dev = false; + break; + default: + g_assert_not_reached(); + } + + /* Select device 0 */ + outb(IDE_BASE + reg_device, 0 | LBA); + + /* Stop any running transfer, clear any pending interrupt */ + outb(bmdma_base + bmreg_cmd, 0); + outb(bmdma_base + bmreg_status, BM_STS_INTR); + + /* Setup PRDT */ + len = sizeof(*prdt) * prdt_entries; + guest_prdt = guest_alloc(guest_malloc, len); + memwrite(guest_prdt, prdt, len); + outl(bmdma_base + bmreg_prdt, guest_prdt); + + /* ATA DMA command */ + outb(IDE_BASE + reg_nsectors, nb_sectors); + + outb(IDE_BASE + reg_lba_low, sector & 0xff); + outb(IDE_BASE + reg_lba_middle, (sector >> 8) & 0xff); + outb(IDE_BASE + reg_lba_high, (sector >> 16) & 0xff); + + outb(IDE_BASE + reg_command, cmd); + + /* Start DMA transfer */ + outb(bmdma_base + bmreg_cmd, BM_CMD_START | (from_dev ? BM_CMD_WRITE : 0)); + + /* Wait for the DMA transfer to complete */ + do { + status = inb(bmdma_base + bmreg_status); + } while ((status & (BM_STS_ACTIVE | BM_STS_INTR)) == BM_STS_ACTIVE); + + g_assert_cmpint(get_irq(IDE_PRIMARY_IRQ), ==, !!(status & BM_STS_INTR)); + + /* Check IDE status code */ + assert_bit_set(inb(IDE_BASE + reg_status), DRDY); + assert_bit_clear(inb(IDE_BASE + reg_status), BSY | DRQ); + + /* Reading the status register clears the IRQ */ + g_assert(!get_irq(IDE_PRIMARY_IRQ)); + + /* Stop DMA transfer if still active */ + if (status & BM_STS_ACTIVE) { + outb(bmdma_base + bmreg_cmd, 0); + } + + free_pci_device(dev); + + return status; +} + +static void test_bmdma_simple_rw(void) +{ + uint8_t status; + uint8_t *buf; + uint8_t *cmpbuf; + size_t len = 512; + uintptr_t guest_buf = guest_alloc(guest_malloc, len); + + PrdtEntry prdt[] = { + { .addr = guest_buf, .size = len | PRDT_EOT }, + }; + + buf = g_malloc(len); + cmpbuf = g_malloc(len); + + /* Write 0x55 pattern to sector 0 */ + memset(buf, 0x55, len); + memwrite(guest_buf, buf, len); + + status = send_dma_request(CMD_WRITE_DMA, 0, 1, prdt, ARRAY_SIZE(prdt)); + g_assert_cmphex(status, ==, BM_STS_INTR); + assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR); + + /* Write 0xaa pattern to sector 1 */ + memset(buf, 0xaa, len); + memwrite(guest_buf, buf, len); + + status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt, ARRAY_SIZE(prdt)); + g_assert_cmphex(status, ==, BM_STS_INTR); + assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR); + + /* Read and verify 0x55 pattern in sector 0 */ + memset(cmpbuf, 0x55, len); + + status = send_dma_request(CMD_READ_DMA, 0, 1, prdt, ARRAY_SIZE(prdt)); + g_assert_cmphex(status, ==, BM_STS_INTR); + assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR); + + memread(guest_buf, buf, len); + g_assert(memcmp(buf, cmpbuf, len) == 0); + + /* Read and verify 0xaa pattern in sector 1 */ + memset(cmpbuf, 0xaa, len); + + status = send_dma_request(CMD_READ_DMA, 1, 1, prdt, ARRAY_SIZE(prdt)); + g_assert_cmphex(status, ==, BM_STS_INTR); + assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR); + + memread(guest_buf, buf, len); + g_assert(memcmp(buf, cmpbuf, len) == 0); + + + g_free(buf); + g_free(cmpbuf); +} + +static void test_bmdma_setup(void) +{ + ide_test_start( + "-vnc none " + "-drive file=%s,if=ide,serial=%s,cache=writeback " + "-global ide-hd.ver=%s", + tmp_path, "testdisk", "version"); +} + +static void test_bmdma_teardown(void) +{ + ide_test_quit(); +} + static void test_identify(void) { uint8_t data; @@ -156,6 +373,10 @@ int main(int argc, char **argv) qtest_add_func("/ide/identify", test_identify); + qtest_add_func("/ide/bmdma/setup", test_bmdma_setup); + qtest_add_func("/ide/bmdma/simple_rw", test_bmdma_simple_rw); + qtest_add_func("/ide/bmdma/teardown", test_bmdma_teardown); + ret = g_test_run(); /* Cleanup */ |