/**
* mrsas_map_request: Map and load data
* input: Adapter instance soft state
* Pointer to command packet
*
* For data from OS, map and load the data buffer into bus space. The
* SG list is built in the callback. If the bus dmamap load is not
* successful, cmd->error_code will contain the error code and a 1 is
* returned.
*/
int mrsas_map_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd)
{
u_int32_t retcode = 0;
struct cam_sim *sim;
int flag = BUS_DMA_NOWAIT;
sim = xpt_path_sim(cmd->ccb_ptr->ccb_h.path);
if (cmd->data != NULL) {
lockmgr(&sc->io_lock, LK_EXCLUSIVE);
/* Map data buffer into bus space */
retcode = bus_dmamap_load(sc->data_tag, cmd->data_dmamap, cmd->data,
cmd->length, mrsas_data_load_cb, cmd, flag);
lockmgr(&sc->io_lock, LK_RELEASE);
if (retcode)
device_printf(sc->mrsas_dev, "bus_dmamap_load(): retcode = %d\n", retcode);
if (retcode == EINPROGRESS) {
device_printf(sc->mrsas_dev, "request load in progress\n");
mrsas_freeze_simq(cmd, sim);
}
}
if (cmd->error_code)
return(1);
return(retcode);
}
/*
* mrsas_map_request: Map and load data
* input: Adapter instance soft state
* Pointer to command packet
*
* For data from OS, map and load the data buffer into bus space. The SG list
* is built in the callback. If the bus dmamap load is not successful,
* cmd->error_code will contain the error code and a 1 is returned.
*/
int
mrsas_map_request(struct mrsas_softc *sc,
struct mrsas_mpt_cmd *cmd, union ccb *ccb)
{
u_int32_t retcode = 0;
struct cam_sim *sim;
sim = xpt_path_sim(cmd->ccb_ptr->ccb_h.path);
if (cmd->data != NULL) {
/* Map data buffer into bus space */
mtx_lock(&sc->io_lock);
#if (__FreeBSD_version >= 902001)
retcode = bus_dmamap_load_ccb(sc->data_tag, cmd->data_dmamap, ccb,
mrsas_data_load_cb, cmd, 0);
#else
retcode = bus_dmamap_load(sc->data_tag, cmd->data_dmamap, cmd->data,
cmd->length, mrsas_data_load_cb, cmd, BUS_DMA_NOWAIT);
#endif
mtx_unlock(&sc->io_lock);
if (retcode)
device_printf(sc->mrsas_dev, "bus_dmamap_load(): retcode = %d\n", retcode);
if (retcode == EINPROGRESS) {
device_printf(sc->mrsas_dev, "request load in progress\n");
mrsas_freeze_simq(cmd, sim);
}
}
if (cmd->error_code)
return (1);
return (retcode);
}
