qtest/ide-test: Add simple DMA read/write test case
This tests that single sectors can be successfully written and correctly read back. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
parent
acbe48013b
commit
b95739dcf5
221
tests/ide-test.c
221
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 */
|
||||
|
Loading…
Reference in New Issue
Block a user