aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJohn Snow <jsnow@redhat.com>2015-09-17 14:17:04 -0400
committerJohn Snow <jsnow@redhat.com>2015-09-18 10:58:56 -0400
commitf7ba8d7fb6a7f22f8ecf99f61a35079accaba5c4 (patch)
tree6db97bef1bf55971cde70eb6a76d016641515ccd
parentab4f705751c39d59e5039a145cf4703320e4207e (diff)
ide-test: add cdrom pio test
Add a simple read test for ATAPI devices, using the PIO mechanism. Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1441926555-19471-4-git-send-email-jsnow@redhat.com
-rw-r--r--tests/ide-test.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/tests/ide-test.c b/tests/ide-test.c
index 4a07e3a9d0..b3ddcf4a1b 100644
--- a/tests/ide-test.c
+++ b/tests/ide-test.c
@@ -45,6 +45,12 @@
#define IDE_BASE 0x1f0
#define IDE_PRIMARY_IRQ 14
+#define ATAPI_BLOCK_SIZE 2048
+
+/* How many bytes to receive via ATAPI PIO at one time.
+ * Must be less than 0xFFFF. */
+#define BYTE_COUNT_LIMIT 5120
+
enum {
reg_data = 0x0,
reg_nsectors = 0x2,
@@ -80,6 +86,7 @@ enum {
CMD_WRITE_DMA = 0xca,
CMD_FLUSH_CACHE = 0xe7,
CMD_IDENTIFY = 0xec,
+ CMD_PACKET = 0xa0,
CMDF_ABORT = 0x100,
CMDF_NO_BM = 0x200,
@@ -585,6 +592,153 @@ static void test_isa_retry_flush(const char *machine)
test_retry_flush("isapc");
}
+typedef struct Read10CDB {
+ uint8_t opcode;
+ uint8_t flags;
+ uint32_t lba;
+ uint8_t reserved;
+ uint16_t nblocks;
+ uint8_t control;
+ uint16_t padding;
+} __attribute__((__packed__)) Read10CDB;
+
+static void send_scsi_cdb_read10(uint32_t lba, uint16_t nblocks)
+{
+ Read10CDB pkt = { .padding = 0 };
+ int i;
+
+ /* Construct SCSI CDB packet */
+ pkt.opcode = 0x28;
+ pkt.lba = cpu_to_be32(lba);
+ pkt.nblocks = cpu_to_be16(nblocks);
+
+ /* Send Packet */
+ for (i = 0; i < sizeof(Read10CDB)/2; i++) {
+ outw(IDE_BASE + reg_data, ((uint16_t *)&pkt)[i]);
+ }
+}
+
+static void nsleep(int64_t nsecs)
+{
+ const struct timespec val = { .tv_nsec = nsecs };
+ nanosleep(&val, NULL);
+ clock_set(nsecs);
+}
+
+static uint8_t ide_wait_clear(uint8_t flag)
+{
+ int i;
+ uint8_t data;
+
+ /* Wait with a 5 second timeout */
+ for (i = 0; i <= 12500000; i++) {
+ data = inb(IDE_BASE + reg_status);
+ if (!(data & flag)) {
+ return data;
+ }
+ nsleep(400);
+ }
+ g_assert_not_reached();
+}
+
+static void ide_wait_intr(int irq)
+{
+ int i;
+ bool intr;
+
+ for (i = 0; i <= 12500000; i++) {
+ intr = get_irq(irq);
+ if (intr) {
+ return;
+ }
+ nsleep(400);
+ }
+
+ g_assert_not_reached();
+}
+
+static void cdrom_pio_impl(int nblocks)
+{
+ FILE *fh;
+ int patt_blocks = MAX(16, nblocks);
+ size_t patt_len = ATAPI_BLOCK_SIZE * patt_blocks;
+ char *pattern = g_malloc(patt_len);
+ size_t rxsize = ATAPI_BLOCK_SIZE * nblocks;
+ uint16_t *rx = g_malloc0(rxsize);
+ int i, j;
+ uint8_t data;
+ uint16_t limit;
+
+ /* Prepopulate the CDROM with an interesting pattern */
+ generate_pattern(pattern, patt_len, ATAPI_BLOCK_SIZE);
+ fh = fopen(tmp_path, "w+");
+ fwrite(pattern, ATAPI_BLOCK_SIZE, patt_blocks, fh);
+ fclose(fh);
+
+ ide_test_start("-drive if=none,file=%s,media=cdrom,format=raw,id=sr0,index=0 "
+ "-device ide-cd,drive=sr0,bus=ide.0", tmp_path);
+ qtest_irq_intercept_in(global_qtest, "ioapic");
+
+ /* PACKET command on device 0 */
+ outb(IDE_BASE + reg_device, 0);
+ outb(IDE_BASE + reg_lba_middle, BYTE_COUNT_LIMIT & 0xFF);
+ outb(IDE_BASE + reg_lba_high, (BYTE_COUNT_LIMIT >> 8 & 0xFF));
+ outb(IDE_BASE + reg_command, CMD_PACKET);
+ /* HPD0: Check_Status_A State */
+ nsleep(400);
+ data = ide_wait_clear(BSY);
+ /* HPD1: Send_Packet State */
+ assert_bit_set(data, DRQ | DRDY);
+ assert_bit_clear(data, ERR | DF | BSY);
+
+ /* SCSI CDB (READ10) -- read n*2048 bytes from block 0 */
+ send_scsi_cdb_read10(0, nblocks);
+
+ /* HPD3: INTRQ_Wait */
+ ide_wait_intr(IDE_PRIMARY_IRQ);
+
+ /* HPD2: Check_Status_B */
+ data = ide_wait_clear(BSY);
+ assert_bit_set(data, DRQ | DRDY);
+ assert_bit_clear(data, ERR | DF | BSY);
+
+ /* Read data back: occurs in bursts of 'BYTE_COUNT_LIMIT' bytes.
+ * If BYTE_COUNT_LIMIT is odd, we transfer BYTE_COUNT_LIMIT - 1 bytes.
+ * We allow an odd limit only when the remaining transfer size is
+ * less than BYTE_COUNT_LIMIT. However, SCSI's read10 command can only
+ * request n blocks, so our request size is always even.
+ * For this reason, we assume there is never a hanging byte to fetch. */
+ g_assert(!(rxsize & 1));
+ limit = BYTE_COUNT_LIMIT & ~1;
+ for (i = 0; i < DIV_ROUND_UP(rxsize, limit); i++) {
+ size_t offset = i * (limit / 2);
+ size_t rem = (rxsize / 2) - offset;
+ for (j = 0; j < MIN((limit / 2), rem); j++) {
+ rx[offset + j] = inw(IDE_BASE + reg_data);
+ }
+ ide_wait_intr(IDE_PRIMARY_IRQ);
+ }
+ data = ide_wait_clear(DRQ);
+ assert_bit_set(data, DRDY);
+ assert_bit_clear(data, DRQ | ERR | DF | BSY);
+
+ g_assert_cmpint(memcmp(pattern, rx, rxsize), ==, 0);
+ g_free(pattern);
+ g_free(rx);
+ test_bmdma_teardown();
+}
+
+static void test_cdrom_pio(void)
+{
+ cdrom_pio_impl(1);
+}
+
+static void test_cdrom_pio_large(void)
+{
+ /* Test a few loops of the PIO DRQ mechanism. */
+ cdrom_pio_impl(BYTE_COUNT_LIMIT * 4 / ATAPI_BLOCK_SIZE);
+}
+
int main(int argc, char **argv)
{
const char *arch = qtest_get_arch();
@@ -628,6 +782,9 @@ int main(int argc, char **argv)
qtest_add_func("/ide/flush/retry_pci", test_pci_retry_flush);
qtest_add_func("/ide/flush/retry_isa", test_isa_retry_flush);
+ qtest_add_func("/ide/cdrom/pio", test_cdrom_pio);
+ qtest_add_func("/ide/cdrom/pio_large", test_cdrom_pio_large);
+
ret = g_test_run();
/* Cleanup */