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https://gitlab.com/qemu-project/qemu
synced 2024-09-06 18:05:37 +00:00
ide-test: add cdrom dma test
Now, test the DMA functionality of the ATAPI drive. Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1441926555-19471-5-git-send-email-jsnow@redhat.com
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@ -53,6 +53,7 @@
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enum {
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reg_data = 0x0,
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reg_feature = 0x1,
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reg_nsectors = 0x2,
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reg_lba_low = 0x3,
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reg_lba_middle = 0x4,
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@ -179,7 +180,8 @@ typedef struct PrdtEntry {
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#define assert_bit_clear(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
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static int send_dma_request(int cmd, uint64_t sector, int nb_sectors,
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PrdtEntry *prdt, int prdt_entries)
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PrdtEntry *prdt, int prdt_entries,
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void(*post_exec)(uint64_t sector, int nb_sectors))
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{
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QPCIDevice *dev;
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uint16_t bmdma_base;
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@ -196,6 +198,9 @@ static int send_dma_request(int cmd, uint64_t sector, int nb_sectors,
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switch (cmd) {
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case CMD_READ_DMA:
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case CMD_PACKET:
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/* Assuming we only test data reads w/ ATAPI, otherwise we need to know
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* the SCSI command being sent in the packet, too. */
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from_dev = true;
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break;
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case CMD_WRITE_DMA:
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@ -224,14 +229,22 @@ static int send_dma_request(int cmd, uint64_t sector, int nb_sectors,
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outl(bmdma_base + bmreg_prdt, guest_prdt);
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/* ATA DMA command */
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outb(IDE_BASE + reg_nsectors, nb_sectors);
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outb(IDE_BASE + reg_lba_low, sector & 0xff);
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outb(IDE_BASE + reg_lba_middle, (sector >> 8) & 0xff);
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outb(IDE_BASE + reg_lba_high, (sector >> 16) & 0xff);
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if (cmd == CMD_PACKET) {
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/* Enables ATAPI DMA; otherwise PIO is attempted */
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outb(IDE_BASE + reg_feature, 0x01);
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} else {
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outb(IDE_BASE + reg_nsectors, nb_sectors);
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outb(IDE_BASE + reg_lba_low, sector & 0xff);
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outb(IDE_BASE + reg_lba_middle, (sector >> 8) & 0xff);
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outb(IDE_BASE + reg_lba_high, (sector >> 16) & 0xff);
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}
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outb(IDE_BASE + reg_command, cmd);
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if (post_exec) {
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post_exec(sector, nb_sectors);
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}
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/* Start DMA transfer */
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outb(bmdma_base + bmreg_cmd, BM_CMD_START | (from_dev ? BM_CMD_WRITE : 0));
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@ -285,7 +298,8 @@ static void test_bmdma_simple_rw(void)
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memset(buf, 0x55, len);
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memwrite(guest_buf, buf, len);
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status = send_dma_request(CMD_WRITE_DMA, 0, 1, prdt, ARRAY_SIZE(prdt));
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status = send_dma_request(CMD_WRITE_DMA, 0, 1, prdt,
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ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, BM_STS_INTR);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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@ -293,14 +307,15 @@ static void test_bmdma_simple_rw(void)
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memset(buf, 0xaa, len);
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memwrite(guest_buf, buf, len);
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status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt, ARRAY_SIZE(prdt));
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status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt,
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ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, BM_STS_INTR);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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/* Read and verify 0x55 pattern in sector 0 */
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memset(cmpbuf, 0x55, len);
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status = send_dma_request(CMD_READ_DMA, 0, 1, prdt, ARRAY_SIZE(prdt));
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status = send_dma_request(CMD_READ_DMA, 0, 1, prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, BM_STS_INTR);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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@ -310,7 +325,7 @@ static void test_bmdma_simple_rw(void)
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/* Read and verify 0xaa pattern in sector 1 */
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memset(cmpbuf, 0xaa, len);
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status = send_dma_request(CMD_READ_DMA, 1, 1, prdt, ARRAY_SIZE(prdt));
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status = send_dma_request(CMD_READ_DMA, 1, 1, prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, BM_STS_INTR);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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@ -335,13 +350,13 @@ static void test_bmdma_short_prdt(void)
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/* Normal request */
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status = send_dma_request(CMD_READ_DMA, 0, 1,
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prdt, ARRAY_SIZE(prdt));
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prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, 0);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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/* Abort the request before it completes */
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status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
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prdt, ARRAY_SIZE(prdt));
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prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, 0);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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}
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@ -360,13 +375,13 @@ static void test_bmdma_one_sector_short_prdt(void)
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/* Normal request */
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status = send_dma_request(CMD_READ_DMA, 0, 2,
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prdt, ARRAY_SIZE(prdt));
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prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, 0);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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/* Abort the request before it completes */
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status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 2,
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prdt, ARRAY_SIZE(prdt));
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prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, 0);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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}
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@ -384,13 +399,13 @@ static void test_bmdma_long_prdt(void)
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/* Normal request */
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status = send_dma_request(CMD_READ_DMA, 0, 1,
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prdt, ARRAY_SIZE(prdt));
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prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, BM_STS_ACTIVE | BM_STS_INTR);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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/* Abort the request before it completes */
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status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
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prdt, ARRAY_SIZE(prdt));
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prdt, ARRAY_SIZE(prdt), NULL);
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g_assert_cmphex(status, ==, BM_STS_INTR);
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assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
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}
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@ -406,7 +421,7 @@ static void test_bmdma_no_busmaster(void)
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PrdtEntry prdt[4096] = { };
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status = send_dma_request(CMD_READ_DMA | CMDF_NO_BM, 0, 512,
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prdt, ARRAY_SIZE(prdt));
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prdt, ARRAY_SIZE(prdt), NULL);
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/* Not entirely clear what the expected result is, but this is what we get
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* in practice. At least we want to be aware of any changes. */
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@ -602,11 +617,15 @@ typedef struct Read10CDB {
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uint16_t padding;
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} __attribute__((__packed__)) Read10CDB;
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static void send_scsi_cdb_read10(uint32_t lba, uint16_t nblocks)
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static void send_scsi_cdb_read10(uint64_t lba, int nblocks)
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{
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Read10CDB pkt = { .padding = 0 };
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int i;
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g_assert_cmpint(lba, <=, UINT32_MAX);
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g_assert_cmpint(nblocks, <=, UINT16_MAX);
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g_assert_cmpint(nblocks, >=, 0);
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/* Construct SCSI CDB packet */
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pkt.opcode = 0x28;
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pkt.lba = cpu_to_be32(lba);
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@ -739,6 +758,40 @@ static void test_cdrom_pio_large(void)
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cdrom_pio_impl(BYTE_COUNT_LIMIT * 4 / ATAPI_BLOCK_SIZE);
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}
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static void test_cdrom_dma(void)
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{
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static const size_t len = ATAPI_BLOCK_SIZE;
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char *pattern = g_malloc(ATAPI_BLOCK_SIZE * 16);
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char *rx = g_malloc0(len);
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uintptr_t guest_buf;
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PrdtEntry prdt[1];
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FILE *fh;
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ide_test_start("-drive if=none,file=%s,media=cdrom,format=raw,id=sr0,index=0 "
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"-device ide-cd,drive=sr0,bus=ide.0", tmp_path);
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qtest_irq_intercept_in(global_qtest, "ioapic");
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guest_buf = guest_alloc(guest_malloc, len);
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prdt[0].addr = cpu_to_le32(guest_buf);
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prdt[0].size = cpu_to_le32(len | PRDT_EOT);
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generate_pattern(pattern, ATAPI_BLOCK_SIZE * 16, ATAPI_BLOCK_SIZE);
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fh = fopen(tmp_path, "w+");
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fwrite(pattern, ATAPI_BLOCK_SIZE, 16, fh);
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fclose(fh);
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send_dma_request(CMD_PACKET, 0, 1, prdt, 1, send_scsi_cdb_read10);
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/* Read back data from guest memory into local qtest memory */
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memread(guest_buf, rx, len);
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g_assert_cmpint(memcmp(pattern, rx, len), ==, 0);
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g_free(pattern);
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g_free(rx);
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test_bmdma_teardown();
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}
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int main(int argc, char **argv)
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{
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const char *arch = qtest_get_arch();
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@ -784,6 +837,7 @@ int main(int argc, char **argv)
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qtest_add_func("/ide/cdrom/pio", test_cdrom_pio);
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qtest_add_func("/ide/cdrom/pio_large", test_cdrom_pio_large);
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qtest_add_func("/ide/cdrom/dma", test_cdrom_dma);
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ret = g_test_run();
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