Commit
9ef2e93f introduced the concept of tagging ATAPI commands as
NONDATA, but this introduced a regression for certain commands better
described as CONDDATA. read_cd is such a command that both requires
a non-zero BCL if a transfer size is set, but is perfectly content to
accept a zero BCL if the transfer size is 0.
This test adds a regression test for the case where BCL and nb_sectors
are both 0.
Flesh out the CDROM tests by:
(1) Allowing the test to specify a BCL
(2) Allowing the buffer comparison test to compare a 0-size buffer
(3) Fix the BCL specification in libqos (It is LE, not BE)
(4) Add a nice human-readable message for future SCSI command additions
Signed-off-by: John Snow <[email protected]>
Reviewed-by: Kevin Wolf <[email protected]>
Message-id:
1477970211[email protected]
[Line length edit --js]
Signed-off-by: John Snow <[email protected]>
const AHCIOpts *opts)
{
unsigned char *tx = opts->opaque;
- unsigned char *rx = g_malloc0(opts->size);
+ unsigned char *rx;
+ if (!opts->size) {
+ return 0;
+ }
+
+ rx = g_malloc0(opts->size);
bufread(opts->buffer, rx, opts->size);
g_assert_cmphex(memcmp(tx, rx, opts->size), ==, 0);
g_free(rx);
return 0;
}
-static void ahci_test_cdrom(int nsectors, bool dma)
+static void ahci_test_cdrom(int nsectors, bool dma, uint8_t cmd,
+ bool override_bcl, uint16_t bcl)
{
AHCIQState *ahci;
unsigned char *tx;
.atapi = true,
.atapi_dma = dma,
.post_cb = ahci_cb_cmp_buff,
+ .set_bcl = override_bcl,
+ .bcl = bcl,
};
uint64_t iso_size = ATAPI_SECTOR_SIZE * (nsectors + 1);
"-device ide-cd,drive=drive0 ", iso);
/* Build & Send AHCI command */
- ahci_exec(ahci, ahci_port_select(ahci), CMD_ATAPI_READ_10, &opts);
+ ahci_exec(ahci, ahci_port_select(ahci), cmd, &opts);
/* Cleanup */
g_free(tx);
remove_iso(fd, iso);
}
+static void ahci_test_cdrom_read10(int nsectors, bool dma)
+{
+ ahci_test_cdrom(nsectors, dma, CMD_ATAPI_READ_10, false, 0);
+}
+
static void test_cdrom_dma(void)
{
- ahci_test_cdrom(1, true);
+ ahci_test_cdrom_read10(1, true);
}
static void test_cdrom_dma_multi(void)
{
- ahci_test_cdrom(3, true);
+ ahci_test_cdrom_read10(3, true);
}
static void test_cdrom_pio(void)
{
- ahci_test_cdrom(1, false);
+ ahci_test_cdrom_read10(1, false);
}
static void test_cdrom_pio_multi(void)
{
- ahci_test_cdrom(3, false);
+ ahci_test_cdrom_read10(3, false);
+}
+
+/* Regression test: Test that a READ_CD command with a BCL of 0 but a size of 0
+ * completes as a NOP instead of erroring out. */
+static void test_atapi_bcl(void)
+{
+ ahci_test_cdrom(0, false, CMD_ATAPI_READ_CD, true, 0);
}
/******************************************************************************/
qtest_add_func("/ahci/cdrom/pio/single", test_cdrom_pio);
qtest_add_func("/ahci/cdrom/pio/multi", test_cdrom_pio_multi);
+ qtest_add_func("/ahci/cdrom/pio/bcl", test_atapi_bcl);
+
ret = g_test_run();
/* Cleanup */
/* Command creation */
if (opts->atapi) {
- cmd = ahci_atapi_command_create(op);
+ uint16_t bcl = opts->set_bcl ? opts->bcl : ATAPI_SECTOR_SIZE;
+ cmd = ahci_atapi_command_create(op, bcl);
if (opts->atapi_dma) {
ahci_command_enable_atapi_dma(cmd);
}
return cmd;
}
-AHCICommand *ahci_atapi_command_create(uint8_t scsi_cmd)
+AHCICommand *ahci_atapi_command_create(uint8_t scsi_cmd, uint16_t bcl)
{
AHCICommand *cmd = ahci_command_create(CMD_PACKET);
cmd->atapi_cmd = g_malloc0(16);
cmd->atapi_cmd[0] = scsi_cmd;
- /* ATAPI needs a PIO transfer chunk size set inside of the LBA registers.
- * The block/sector size is a natural default. */
- cmd->fis.lba_lo[1] = ATAPI_SECTOR_SIZE >> 8 & 0xFF;
- cmd->fis.lba_lo[2] = ATAPI_SECTOR_SIZE & 0xFF;
-
+ stw_le_p(&cmd->fis.lba_lo[1], bcl);
return cmd;
}
switch (cbd[0]) {
case CMD_ATAPI_READ_10:
+ case CMD_ATAPI_READ_CD:
g_assert_cmpuint(lba, <=, UINT32_MAX);
stl_be_p(&cbd[2], lba);
break;
default:
/* SCSI doesn't have uniform packet formats,
* so you have to add support for it manually. Sorry! */
+ fprintf(stderr, "The Libqos AHCI driver does not support the "
+ "set_offset operation for ATAPI command 0x%02x, "
+ "please add support.\n",
+ cbd[0]);
g_assert_not_reached();
}
}
{
unsigned char *cbd = cmd->atapi_cmd;
uint64_t nsectors = xbytes / 2048;
+ uint32_t tmp;
g_assert(cbd);
switch (cbd[0]) {
g_assert_cmpuint(nsectors, <=, UINT16_MAX);
stw_be_p(&cbd[7], nsectors);
break;
+ case CMD_ATAPI_READ_CD:
+ /* 24bit BE store */
+ g_assert_cmpuint(nsectors, <, 1ULL << 24);
+ tmp = nsectors;
+ cbd[6] = (tmp & 0xFF0000) >> 16;
+ cbd[7] = (tmp & 0xFF00) >> 8;
+ cbd[8] = (tmp & 0xFF);
+ break;
default:
/* SCSI doesn't have uniform packet formats,
* so you have to add support for it manually. Sorry! */
+ fprintf(stderr, "The Libqos AHCI driver does not support the set_size "
+ "operation for ATAPI command 0x%02x, please add support.\n",
+ cbd[0]);
g_assert_not_reached();
}
}
/* ATAPI Commands */
enum {
CMD_ATAPI_READ_10 = 0x28,
+ CMD_ATAPI_READ_CD = 0xbe,
};
/* AHCI Command Header Flags & Masks*/
/* Options to ahci_exec */
typedef struct AHCIOpts {
- size_t size;
- unsigned prd_size;
- uint64_t lba;
- uint64_t buffer;
- bool atapi;
- bool atapi_dma;
+ size_t size; /* Size of transfer */
+ unsigned prd_size; /* Size per-each PRD */
+ bool set_bcl; /* Override the default BCL of ATAPI_SECTOR_SIZE */
+ unsigned bcl; /* Byte Count Limit, for ATAPI PIO */
+ uint64_t lba; /* Starting LBA offset */
+ uint64_t buffer; /* Pointer to source or destination guest buffer */
+ bool atapi; /* ATAPI command? */
+ bool atapi_dma; /* Use DMA for ATAPI? */
bool error;
int (*pre_cb)(AHCIQState*, AHCICommand*, const struct AHCIOpts *);
int (*mid_cb)(AHCIQState*, AHCICommand*, const struct AHCIOpts *);
/* Command: Fine-grained lifecycle */
AHCICommand *ahci_command_create(uint8_t command_name);
-AHCICommand *ahci_atapi_command_create(uint8_t scsi_cmd);
+AHCICommand *ahci_atapi_command_create(uint8_t scsi_cmd, uint16_t bcl);
void ahci_command_commit(AHCIQState *ahci, AHCICommand *cmd, uint8_t port);
void ahci_command_issue(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_issue_async(AHCIQState *ahci, AHCICommand *cmd);
projects / qemu.git / commitdiff