/*
* Initialise our interface to the controller.
*/
int
cac_init(struct cac_softc *sc, const char *intrstr, int startfw)
{
struct cac_controller_info cinfo;
int error, rseg, size, i;
bus_dma_segment_t seg;
struct cac_ccb *ccb;
char firm[8];
if (intrstr != NULL)
aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
SIMPLEQ_INIT(&sc->sc_ccb_free);
SIMPLEQ_INIT(&sc->sc_ccb_queue);
mutex_init(&sc->sc_mutex, MUTEX_DEFAULT, IPL_VM);
cv_init(&sc->sc_ccb_cv, "cacccb");
size = sizeof(struct cac_ccb) * CAC_MAX_CCBS;
if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1,
&rseg, BUS_DMA_NOWAIT)) != 0) {
aprint_error_dev(sc->sc_dev, "unable to allocate CCBs, error = %d\n",
error);
return (-1);
}
if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, size,
(void **)&sc->sc_ccbs,
BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) {
aprint_error_dev(sc->sc_dev, "unable to map CCBs, error = %d\n",
error);
return (-1);
}
if ((error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0,
BUS_DMA_NOWAIT, &sc->sc_dmamap)) != 0) {
aprint_error_dev(sc->sc_dev, "unable to create CCB DMA map, error = %d\n",
error);
return (-1);
}
if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, sc->sc_ccbs,
size, NULL, BUS_DMA_NOWAIT)) != 0) {
aprint_error_dev(sc->sc_dev, "unable to load CCB DMA map, error = %d\n",
error);
return (-1);
}
sc->sc_ccbs_paddr = sc->sc_dmamap->dm_segs[0].ds_addr;
memset(sc->sc_ccbs, 0, size);
ccb = (struct cac_ccb *)sc->sc_ccbs;
for (i = 0; i < CAC_MAX_CCBS; i++, ccb++) {
/* Create the DMA map for this CCB's data */
error = bus_dmamap_create(sc->sc_dmat, CAC_MAX_XFER,
CAC_SG_SIZE, CAC_MAX_XFER, 0,
BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
&ccb->ccb_dmamap_xfer);
if (error) {
aprint_error_dev(sc->sc_dev, "can't create ccb dmamap (%d)\n",
error);
break;
}
ccb->ccb_flags = 0;
ccb->ccb_paddr = sc->sc_ccbs_paddr + i * sizeof(struct cac_ccb);
SIMPLEQ_INSERT_TAIL(&sc->sc_ccb_free, ccb, ccb_chain);
}
/* Start firmware background tasks, if needed. */
if (startfw) {
if (cac_cmd(sc, CAC_CMD_START_FIRMWARE, &cinfo, sizeof(cinfo),
0, 0, CAC_CCB_DATA_IN, NULL)) {
aprint_error_dev(sc->sc_dev, "CAC_CMD_START_FIRMWARE failed\n");
return (-1);
}
}
if (cac_cmd(sc, CAC_CMD_GET_CTRL_INFO, &cinfo, sizeof(cinfo), 0, 0,
CAC_CCB_DATA_IN, NULL)) {
aprint_error_dev(sc->sc_dev, "CAC_CMD_GET_CTRL_INFO failed\n");
return (-1);
}
strlcpy(firm, cinfo.firm_rev, 4+1);
printf("%s: %d channels, firmware <%s>\n", device_xname(sc->sc_dev),
cinfo.scsi_chips, firm);
/* Limit number of units to size of our sc_unitmask */
sc->sc_nunits = cinfo.num_drvs;
if (sc->sc_nunits > sizeof(sc->sc_unitmask) * NBBY)
sc->sc_nunits = sizeof(sc->sc_unitmask) * NBBY;
/* Attach our units */
sc->sc_unitmask = 0;
cac_rescan(sc->sc_dev, "cac", 0);
/* Set our `shutdownhook' before we start any device activity. */
if (cac_sdh == NULL)
cac_sdh = shutdownhook_establish(cac_shutdown, NULL);
mutex_enter(&sc->sc_mutex);
(*sc->sc_cl.cl_intr_enable)(sc, CAC_INTR_ENABLE);
mutex_exit(&sc->sc_mutex);
#if NBIO > 0
if (bio_register(sc->sc_dev, cac_ioctl) != 0)
aprint_error_dev(sc->sc_dev, "controller registration failed");
else
sc->sc_ioctl = cac_ioctl;
if (cac_create_sensors(sc) != 0)
aprint_error_dev(sc->sc_dev, "unable to create sensors\n");
#endif
return (0);
}
/*
* Initialise our interface to the controller.
*/
int
cac_init(struct cac_softc *sc, int startfw)
{
struct scsibus_attach_args saa;
struct cac_controller_info cinfo;
int error, rseg, size, i;
bus_dma_segment_t seg[1];
struct cac_ccb *ccb;
SIMPLEQ_INIT(&sc->sc_ccb_free);
SIMPLEQ_INIT(&sc->sc_ccb_queue);
size = sizeof(struct cac_ccb) * CAC_MAX_CCBS;
if ((error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, seg, 1,
&rseg, BUS_DMA_NOWAIT | BUS_DMA_ZERO)) != 0) {
printf("%s: unable to allocate CCBs, error = %d\n",
sc->sc_dv.dv_xname, error);
return (-1);
}
if ((error = bus_dmamem_map(sc->sc_dmat, seg, rseg, size,
&sc->sc_ccbs, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) {
printf("%s: unable to map CCBs, error = %d\n",
sc->sc_dv.dv_xname, error);
return (-1);
}
if ((error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0,
BUS_DMA_NOWAIT, &sc->sc_dmamap)) != 0) {
printf("%s: unable to create CCB DMA map, error = %d\n",
sc->sc_dv.dv_xname, error);
return (-1);
}
if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, sc->sc_ccbs,
size, NULL, BUS_DMA_NOWAIT)) != 0) {
printf("%s: unable to load CCB DMA map, error = %d\n",
sc->sc_dv.dv_xname, error);
return (-1);
}
sc->sc_ccbs_paddr = sc->sc_dmamap->dm_segs[0].ds_addr;
ccb = (struct cac_ccb *)sc->sc_ccbs;
for (i = 0; i < CAC_MAX_CCBS; i++, ccb++) {
/* Create the DMA map for this CCB's data */
error = bus_dmamap_create(sc->sc_dmat, CAC_MAX_XFER,
CAC_SG_SIZE, CAC_MAX_XFER, 0,
BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
&ccb->ccb_dmamap_xfer);
if (error) {
printf("%s: can't create ccb dmamap (%d)\n",
sc->sc_dv.dv_xname, error);
break;
}
ccb->ccb_paddr = sc->sc_ccbs_paddr + i * sizeof(struct cac_ccb);
SIMPLEQ_INSERT_TAIL(&sc->sc_ccb_free, ccb, ccb_chain);
}
/* Start firmware background tasks, if needed. */
if (startfw) {
if (cac_cmd(sc, CAC_CMD_START_FIRMWARE, &cinfo, sizeof(cinfo),
0, 0, CAC_CCB_DATA_IN, NULL)) {
printf("%s: CAC_CMD_START_FIRMWARE failed\n",
sc->sc_dv.dv_xname);
return (-1);
}
}
if (cac_cmd(sc, CAC_CMD_GET_CTRL_INFO, &cinfo, sizeof(cinfo), 0, 0,
CAC_CCB_DATA_IN, NULL)) {
printf("%s: CAC_CMD_GET_CTRL_INFO failed\n",
sc->sc_dv.dv_xname);
return (-1);
}
if (!cinfo.num_drvs) {
printf("%s: no volumes defined\n", sc->sc_dv.dv_xname);
return (-1);
}
sc->sc_nunits = cinfo.num_drvs;
sc->sc_dinfos = malloc(cinfo.num_drvs * sizeof(struct cac_drive_info),
M_DEVBUF, M_NOWAIT | M_ZERO);
if (sc->sc_dinfos == NULL) {
printf("%s: cannot allocate memory for drive_info\n",
sc->sc_dv.dv_xname);
return (-1);
}
sc->sc_link.adapter_softc = sc;
sc->sc_link.adapter = &cac_switch;
sc->sc_link.adapter_target = cinfo.num_drvs;
sc->sc_link.adapter_buswidth = cinfo.num_drvs;
sc->sc_link.openings = CAC_MAX_CCBS / sc->sc_nunits;
if (sc->sc_link.openings < 4 )
sc->sc_link.openings = 4;
bzero(&saa, sizeof(saa));
saa.saa_sc_link = &sc->sc_link;
config_found(&sc->sc_dv, &saa, scsiprint);
/* Set our `shutdownhook' before we start any device activity. */
if (cac_sdh == NULL)
cac_sdh = shutdownhook_establish(cac_shutdown, NULL);
(*sc->sc_cl->cl_intr_enable)(sc, 1);
#if NBIO > 0
if (bio_register(&sc->sc_dv, cac_ioctl) != 0)
printf("%s: controller registration failed\n",
sc->sc_dv.dv_xname);
else
sc->sc_ioctl = cac_ioctl;
#ifndef SMALL_KERNEL
if (cac_create_sensors(sc) != 0)
printf("%s: unable to create sensors\n", sc->sc_dv.dv_xname);
#endif
#endif
return (0);
}
