* THE SOFTWARE.
*/
-#include <stdint.h>
-#include <string.h>
-#include <stdio.h>
+#include "qemu/osdep.h"
#include <glib.h>
#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_feature = 0x1,
reg_nsectors = 0x2,
reg_lba_low = 0x3,
reg_lba_middle = 0x4,
CMD_WRITE_DMA = 0xca,
CMD_FLUSH_CACHE = 0xe7,
CMD_IDENTIFY = 0xec,
+ CMD_PACKET = 0xa0,
CMDF_ABORT = 0x100,
CMDF_NO_BM = 0x200,
#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)
+ PrdtEntry *prdt, int prdt_entries,
+ void(*post_exec)(uint64_t sector, int nb_sectors))
{
QPCIDevice *dev;
uint16_t bmdma_base;
switch (cmd) {
case CMD_READ_DMA:
+ case CMD_PACKET:
+ /* Assuming we only test data reads w/ ATAPI, otherwise we need to know
+ * the SCSI command being sent in the packet, too. */
from_dev = true;
break;
case CMD_WRITE_DMA:
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);
+ if (cmd == CMD_PACKET) {
+ /* Enables ATAPI DMA; otherwise PIO is attempted */
+ outb(IDE_BASE + reg_feature, 0x01);
+ } else {
+ 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);
+ if (post_exec) {
+ post_exec(sector, nb_sectors);
+ }
+
/* Start DMA transfer */
outb(bmdma_base + bmreg_cmd, BM_CMD_START | (from_dev ? BM_CMD_WRITE : 0));
memset(buf, 0x55, len);
memwrite(guest_buf, buf, len);
- status = send_dma_request(CMD_WRITE_DMA, 0, 1, prdt, ARRAY_SIZE(prdt));
+ status = send_dma_request(CMD_WRITE_DMA, 0, 1, prdt,
+ ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
memset(buf, 0xaa, len);
memwrite(guest_buf, buf, len);
- status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt, ARRAY_SIZE(prdt));
+ status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt,
+ ARRAY_SIZE(prdt), NULL);
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));
+ status = send_dma_request(CMD_READ_DMA, 0, 1, prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* 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));
+ status = send_dma_request(CMD_READ_DMA, 1, 1, prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 1,
- prdt, ARRAY_SIZE(prdt));
+ prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Abort the request before it completes */
status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
- prdt, ARRAY_SIZE(prdt));
+ prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 2,
- prdt, ARRAY_SIZE(prdt));
+ prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Abort the request before it completes */
status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 2,
- prdt, ARRAY_SIZE(prdt));
+ prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 1,
- prdt, ARRAY_SIZE(prdt));
+ prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, BM_STS_ACTIVE | BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Abort the request before it completes */
status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
- prdt, ARRAY_SIZE(prdt));
+ prdt, ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
PrdtEntry prdt[4096] = { };
status = send_dma_request(CMD_READ_DMA | CMDF_NO_BM, 0, 512,
- prdt, ARRAY_SIZE(prdt));
+ prdt, ARRAY_SIZE(prdt), NULL);
/* Not entirely clear what the expected result is, but this is what we get
* in practice. At least we want to be aware of any changes. */
tmp_path);
/* Delay the completion of the flush request until we explicitly do it */
- qmp_discard_response("{'execute':'human-monitor-command', 'arguments': {"
- " 'command-line':"
- " 'qemu-io ide0-hd0 \"break flush_to_os A\"'} }");
+ g_free(hmp("qemu-io ide0-hd0 \"break flush_to_os A\""));
/* FLUSH CACHE command on device 0*/
outb(IDE_BASE + reg_device, 0);
assert_bit_clear(data, DF | ERR | DRQ);
/* Complete the command */
- qmp_discard_response("{'execute':'human-monitor-command', 'arguments': {"
- " 'command-line':"
- " 'qemu-io ide0-hd0 \"resume A\"'} }");
+ g_free(hmp("qemu-io ide0-hd0 \"resume A\""));
/* Check registers */
data = inb(IDE_BASE + reg_device);
ide_test_quit();
}
-static void test_pci_retry_flush(const char *machine)
+static void test_pci_retry_flush(void)
{
test_retry_flush("pc");
}
-static void test_isa_retry_flush(const char *machine)
+static void test_isa_retry_flush(void)
{
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(uint64_t lba, int nblocks)
+{
+ Read10CDB pkt = { .padding = 0 };
+ int i;
+
+ g_assert_cmpint(lba, <=, UINT32_MAX);
+ g_assert_cmpint(nblocks, <=, UINT16_MAX);
+ g_assert_cmpint(nblocks, >=, 0);
+
+ /* 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, cpu_to_le16(((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)
+{
+ uint8_t data;
+ time_t st;
+
+ /* Wait with a 5 second timeout */
+ time(&st);
+ while (true) {
+ data = inb(IDE_BASE + reg_status);
+ if (!(data & flag)) {
+ return data;
+ }
+ if (difftime(time(NULL), st) > 5.0) {
+ break;
+ }
+ nsleep(400);
+ }
+ g_assert_not_reached();
+}
+
+static void ide_wait_intr(int irq)
+{
+ time_t st;
+ bool intr;
+
+ time(&st);
+ while (true) {
+ intr = get_irq(irq);
+ if (intr) {
+ return;
+ }
+ if (difftime(time(NULL), st) > 5.0) {
+ break;
+ }
+ 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);
+ /* HP0: Check_Status_A State */
+ nsleep(400);
+ data = ide_wait_clear(BSY);
+ /* HP1: 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);
+
+ /* 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;
+
+ /* HP3: INTRQ_Wait */
+ ide_wait_intr(IDE_PRIMARY_IRQ);
+
+ /* HP2: Check_Status_B (and clear IRQ) */
+ data = ide_wait_clear(BSY);
+ assert_bit_set(data, DRQ | DRDY);
+ assert_bit_clear(data, ERR | DF | BSY);
+
+ /* HP4: Transfer_Data */
+ for (j = 0; j < MIN((limit / 2), rem); j++) {
+ rx[offset + j] = le16_to_cpu(inw(IDE_BASE + reg_data));
+ }
+ }
+
+ /* Check for final completion IRQ */
+ ide_wait_intr(IDE_PRIMARY_IRQ);
+
+ /* Sanity check final state */
+ 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);
+}
+
+
+static void test_cdrom_dma(void)
+{
+ static const size_t len = ATAPI_BLOCK_SIZE;
+ char *pattern = g_malloc(ATAPI_BLOCK_SIZE * 16);
+ char *rx = g_malloc0(len);
+ uintptr_t guest_buf;
+ PrdtEntry prdt[1];
+ FILE *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");
+
+ guest_buf = guest_alloc(guest_malloc, len);
+ prdt[0].addr = cpu_to_le32(guest_buf);
+ prdt[0].size = cpu_to_le32(len | PRDT_EOT);
+
+ generate_pattern(pattern, ATAPI_BLOCK_SIZE * 16, ATAPI_BLOCK_SIZE);
+ fh = fopen(tmp_path, "w+");
+ fwrite(pattern, ATAPI_BLOCK_SIZE, 16, fh);
+ fclose(fh);
+
+ send_dma_request(CMD_PACKET, 0, 1, prdt, 1, send_scsi_cdb_read10);
+
+ /* Read back data from guest memory into local qtest memory */
+ memread(guest_buf, rx, len);
+ g_assert_cmpint(memcmp(pattern, rx, len), ==, 0);
+
+ g_free(pattern);
+ g_free(rx);
+ test_bmdma_teardown();
+}
+
int main(int argc, char **argv)
{
const char *arch = qtest_get_arch();
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);
+ qtest_add_func("/ide/cdrom/dma", test_cdrom_dma);
+
ret = g_test_run();
/* Cleanup */
Code Review / kvmfornfv.git / blobdiff