#include <errno.h>
#include <assert.h>
#include <sys/poll.h>
-#include "fio.h"
-#include "os.h"
+
+#include "../fio.h"
+#include "../os.h"
+
+#ifdef FIO_HAVE_SGIO
struct sgio_cmd {
unsigned char cdb[10];
static int fio_sgio_getevents(struct thread_data *td, int min, int max,
struct timespec fio_unused *t)
{
+ struct fio_file *f = &td->files[0];
struct sgio_data *sd = td->io_ops->data;
- struct pollfd pfd = { .fd = td->fd, .events = POLLIN };
+ struct pollfd pfd = { .fd = f->fd, .events = POLLIN };
void *buf = malloc(max * sizeof(struct sg_io_hdr));
int left = max, ret, events, i, r = 0, fl = 0;
* don't block for !events
*/
if (!min) {
- fl = fcntl(td->fd, F_GETFL);
- fcntl(td->fd, F_SETFL, fl | O_NONBLOCK);
+ fl = fcntl(f->fd, F_GETFL);
+ fcntl(f->fd, F_SETFL, fl | O_NONBLOCK);
}
while (left) {
break;
} while (1);
- ret = read(td->fd, buf, left * sizeof(struct sg_io_hdr));
+ ret = read(f->fd, buf, left * sizeof(struct sg_io_hdr));
if (ret < 0) {
if (errno == EAGAIN)
break;
}
if (!min)
- fcntl(td->fd, F_SETFL, fl);
+ fcntl(f->fd, F_SETFL, fl);
free(buf);
return r;
}
-static int fio_sgio_ioctl_doio(struct thread_data *td, struct io_u *io_u)
+static int fio_sgio_ioctl_doio(struct thread_data *td,
+ struct fio_file *f, struct io_u *io_u)
{
struct sgio_data *sd = td->io_ops->data;
struct sg_io_hdr *hdr = &io_u->hdr;
sd->events[0] = io_u;
- return ioctl(td->fd, SG_IO, hdr);
+ return ioctl(f->fd, SG_IO, hdr);
}
-static int fio_sgio_rw_doio(struct thread_data *td, struct io_u *io_u, int sync)
+static int fio_sgio_rw_doio(struct fio_file *f, struct io_u *io_u, int sync)
{
struct sg_io_hdr *hdr = &io_u->hdr;
int ret;
- ret = write(td->fd, hdr, sizeof(*hdr));
+ ret = write(f->fd, hdr, sizeof(*hdr));
if (ret < 0)
return errno;
if (sync) {
- ret = read(td->fd, hdr, sizeof(*hdr));
+ ret = read(f->fd, hdr, sizeof(*hdr));
if (ret < 0)
return errno;
}
static int fio_sgio_doio(struct thread_data *td, struct io_u *io_u, int sync)
{
- if (td->filetype == FIO_TYPE_BD)
- return fio_sgio_ioctl_doio(td, io_u);
-
- return fio_sgio_rw_doio(td, io_u, sync);
-}
-
-static int fio_sgio_sync(struct thread_data *td)
-{
- struct sgio_data *sd = td->io_ops->data;
- struct sg_io_hdr *hdr;
- struct io_u *io_u;
- int ret;
+ struct fio_file *f = io_u->file;
- io_u = __get_io_u(td);
- if (!io_u)
- return ENOMEM;
-
- hdr = &io_u->hdr;
- sgio_hdr_init(sd, hdr, io_u, 0);
- hdr->dxfer_direction = SG_DXFER_NONE;
-
- hdr->cmdp[0] = 0x35;
+ if (td->filetype == FIO_TYPE_BD)
+ return fio_sgio_ioctl_doio(td, f, io_u);
- ret = fio_sgio_doio(td, io_u, 1);
- put_io_u(td, io_u);
- return ret;
+ return fio_sgio_rw_doio(f, io_u, sync);
}
static int fio_sgio_prep(struct thread_data *td, struct io_u *io_u)
return EINVAL;
}
- sgio_hdr_init(sd, hdr, io_u, 1);
-
if (io_u->ddir == DDIR_READ) {
+ sgio_hdr_init(sd, hdr, io_u, 1);
+
hdr->dxfer_direction = SG_DXFER_FROM_DEV;
hdr->cmdp[0] = 0x28;
- } else {
+ } else if (io_u->ddir == DDIR_WRITE) {
+ sgio_hdr_init(sd, hdr, io_u, 1);
+
hdr->dxfer_direction = SG_DXFER_TO_DEV;
hdr->cmdp[0] = 0x2a;
+ } else {
+ sgio_hdr_init(sd, hdr, io_u, 0);
+
+ hdr->dxfer_direction = SG_DXFER_NONE;
+ hdr->cmdp[0] = 0x35;
+ }
+
+ if (hdr->dxfer_direction != SG_DXFER_NONE) {
+ nr_blocks = io_u->buflen / sd->bs;
+ lba = io_u->offset / sd->bs;
+ hdr->cmdp[2] = (unsigned char) ((lba >> 24) & 0xff);
+ hdr->cmdp[3] = (unsigned char) ((lba >> 16) & 0xff);
+ hdr->cmdp[4] = (unsigned char) ((lba >> 8) & 0xff);
+ hdr->cmdp[5] = (unsigned char) (lba & 0xff);
+ hdr->cmdp[7] = (unsigned char) ((nr_blocks >> 8) & 0xff);
+ hdr->cmdp[8] = (unsigned char) (nr_blocks & 0xff);
}
- nr_blocks = io_u->buflen / sd->bs;
- lba = io_u->offset / sd->bs;
- hdr->cmdp[2] = (lba >> 24) & 0xff;
- hdr->cmdp[3] = (lba >> 16) & 0xff;
- hdr->cmdp[4] = (lba >> 8) & 0xff;
- hdr->cmdp[5] = lba & 0xff;
- hdr->cmdp[7] = (nr_blocks >> 8) & 0xff;
- hdr->cmdp[8] = nr_blocks & 0xff;
return 0;
}
struct sg_io_hdr *hdr = &io_u->hdr;
int ret;
- ret = fio_sgio_doio(td, io_u, 0);
+ ret = fio_sgio_doio(td, io_u, io_u->ddir == DDIR_SYNC);
if (ret < 0)
io_u->error = errno;
static int fio_sgio_init(struct thread_data *td)
{
+ struct fio_file *f = &td->files[0];
struct sgio_data *sd;
unsigned int bs;
int ret;
sd = malloc(sizeof(*sd));
+ memset(sd, 0, sizeof(*sd));
sd->cmds = malloc(td->iodepth * sizeof(struct sgio_cmd));
+ memset(sd->cmds, 0, td->iodepth * sizeof(struct sgio_cmd));
sd->events = malloc(td->iodepth * sizeof(struct io_u *));
+ memset(sd->events, 0, td->iodepth * sizeof(struct io_u *));
td->io_ops->data = sd;
if (td->filetype == FIO_TYPE_BD) {
- if (ioctl(td->fd, BLKSSZGET, &bs) < 0) {
+ if (ioctl(f->fd, BLKSSZGET, &bs) < 0) {
td_verror(td, errno);
- return 1;
+ goto err;
}
} else if (td->filetype == FIO_TYPE_CHAR) {
int version;
- if (ioctl(td->fd, SG_GET_VERSION_NUM, &version) < 0) {
+ if (ioctl(f->fd, SG_GET_VERSION_NUM, &version) < 0) {
td_verror(td, errno);
- return 1;
+ goto err;
}
ret = fio_sgio_get_bs(td, &bs);
if (ret)
- return ret;
+ goto err;
} else {
log_err("ioengine sgio only works on block devices\n");
- return 1;
+ goto err;
}
sd->bs = bs;
*/
td->override_sync = 1;
return 0;
+err:
+ free(sd->events);
+ free(sd->cmds);
+ free(sd);
+ return 1;
}
-struct ioengine_ops ioengine = {
+static struct ioengine_ops ioengine = {
.name = "sg",
.version = FIO_IOOPS_VERSION,
.init = fio_sgio_init,
.getevents = fio_sgio_getevents,
.event = fio_sgio_event,
.cleanup = fio_sgio_cleanup,
- .sync = fio_sgio_sync,
- .flags = FIO_SYNCIO,
+ .flags = FIO_SYNCIO | FIO_RAWIO,
};
+
+#else /* FIO_HAVE_SGIO */
+
+/*
+ * When we have a proper configure system in place, we simply wont build
+ * and install this io engine. For now install a crippled version that
+ * just complains and fails to load.
+ */
+static int fio_sgio_init(struct thread_data fio_unused *td)
+{
+ fprintf(stderr, "fio: sgio not available\n");
+ return 1;
+}
+
+static struct ioengine_ops ioengine = {
+ .name = "sgio",
+ .version = FIO_IOOPS_VERSION,
+ .init = fio_sgio_init,
+};
+
+#endif
+
+static void fio_init fio_sgio_register(void)
+{
+ register_ioengine(&ioengine);
+}
+
+static void fio_exit fio_sgio_unregister(void)
+{
+ unregister_ioengine(&ioengine);
+}
projects / fio.git / blobdiff