void
ahd_setup_data(struct ahd_softc *ahd, struct scsi_xfer *xs,
struct scb *scb)
{
struct hardware_scb *hscb;
int s;
hscb = scb->hscb;
xs->resid = xs->status = 0;
xs->error = CAM_REQ_INPROG;
hscb->cdb_len = xs->cmdlen;
if (hscb->cdb_len > MAX_CDB_LEN) {
ahd_lock(ahd, &s);
ahd_free_scb(ahd, scb);
xs->error = XS_DRIVER_STUFFUP;
scsi_done(xs);
ahd_unlock(ahd, &s);
return;
}
memcpy(hscb->shared_data.idata.cdb, xs->cmd, hscb->cdb_len);
/* Only use S/G if there is a transfer */
if (xs->datalen) {
int error;
error = bus_dmamap_load(ahd->parent_dmat,
scb->dmamap, xs->data,
xs->datalen, NULL,
((xs->flags & SCSI_NOSLEEP) ?
BUS_DMA_NOWAIT : BUS_DMA_WAITOK) |
BUS_DMA_STREAMING |
((xs->flags & XS_CTL_DATA_IN) ?
BUS_DMA_READ : BUS_DMA_WRITE));
if (error) {
#ifdef AHD_DEBUG
printf("%s: in ahd_setup_data(): bus_dmamap_load() "
"= %d\n", ahd_name(ahd), error);
#endif
ahd_lock(ahd, &s);
ahd_free_scb(ahd, scb);
xs->error = XS_DRIVER_STUFFUP;
scsi_done(xs);
ahd_unlock(ahd, &s);
return;
}
ahd_execute_scb(scb, scb->dmamap->dm_segs,
scb->dmamap->dm_nsegs);
} else {
ahd_execute_scb(scb, NULL, 0);
}
}
static void
ahd_linux_pci_dev_remove(struct pci_dev *pdev)
{
struct ahd_softc *ahd = pci_get_drvdata(pdev);
u_long s;
if (ahd->platform_data && ahd->platform_data->host)
scsi_remove_host(ahd->platform_data->host);
ahd_lock(ahd, &s);
ahd_intr_enable(ahd, FALSE);
ahd_unlock(ahd, &s);
ahd_free(ahd);
}
void
aic_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
{
int s;
ahd_lock(ahd, &s);
if ((ahd->flags & AHD_RESOURCE_SHORTAGE) != 0) {
ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
}
if (!cold) {
/* we are no longer in autoconf */
timeout_del(&scb->xs->stimeout);
}
ahd_unlock(ahd, &s);
}
/*
* Attach all the sub-devices we can find
*/
int
ahd_attach(struct ahd_softc *ahd)
{
struct scsibus_attach_args saa;
char ahd_info[256];
int s;
ahd_controller_info(ahd, ahd_info, sizeof ahd_info);
printf("%s\n", ahd_info);
ahd_lock(ahd, &s);
/*
* fill in the prototype scsi_links.
*/
ahd->sc_channel.adapter_target = ahd->our_id;
if (ahd->features & AHD_WIDE)
ahd->sc_channel.adapter_buswidth = 16;
ahd->sc_channel.adapter_softc = ahd;
ahd->sc_channel.adapter = &ahd_switch;
ahd->sc_channel.openings = 16;
if (bootverbose) {
ahd_controller_info(ahd, ahd_info, sizeof ahd_info);
printf("%s: %s\n", ahd->sc_dev.dv_xname, ahd_info);
}
ahd_intr_enable(ahd, TRUE);
if (ahd->flags & AHD_RESET_BUS_A)
ahd_reset_channel(ahd, 'A', TRUE);
bzero(&saa, sizeof(saa));
saa.saa_sc_link = &ahd->sc_channel;
ahd->sc_child = config_found((void *)&ahd->sc_dev, &saa, scsiprint);
ahd_unlock(ahd, &s);
return (1);
}
static int
ahd_proc_write_seeprom(struct ahd_softc *ahd, char *buffer, int length)
{
ahd_mode_state saved_modes;
int have_seeprom;
u_long s;
int paused;
int written;
/* Default to failure. */
written = -EINVAL;
ahd_lock(ahd, &s);
paused = ahd_is_paused(ahd);
if (!paused)
ahd_pause(ahd);
saved_modes = ahd_save_modes(ahd);
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
if (length != sizeof(struct seeprom_config)) {
<<<<<<< HEAD
printk("ahd_proc_write_seeprom: incorrect buffer size\n");
=======
static int
ahd_proc_write_seeprom(struct ahd_softc *ahd, char *buffer, int length)
{
ahd_mode_state saved_modes;
int have_seeprom;
u_long s;
int paused;
int written;
/* Default to failure. */
written = -EINVAL;
ahd_lock(ahd, &s);
paused = ahd_is_paused(ahd);
if (!paused)
ahd_pause(ahd);
saved_modes = ahd_save_modes(ahd);
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
if (length != sizeof(struct seeprom_config)) {
printf("ahd_proc_write_seeprom: incorrect buffer size\n");
goto done;
}
have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer);
if (have_seeprom == 0) {
printf("ahd_proc_write_seeprom: cksum verification failed\n");
goto done;
}
have_seeprom = ahd_acquire_seeprom(ahd);
if (!have_seeprom) {
printf("ahd_proc_write_seeprom: No Serial EEPROM\n");
goto done;
} else {
u_int start_addr;
if (ahd->seep_config == NULL) {
ahd->seep_config = malloc(sizeof(*ahd->seep_config),
M_DEVBUF, M_NOWAIT);
if (ahd->seep_config == NULL) {
printf("aic79xx: Unable to allocate serial "
"eeprom buffer. Write failing\n");
goto done;
}
}
printf("aic79xx: Writing Serial EEPROM\n");
start_addr = 32 * (ahd->channel - 'A');
ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr,
sizeof(struct seeprom_config)/2);
ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config,
start_addr, sizeof(struct seeprom_config)/2,
/*ByteStream*/FALSE);
ahd_release_seeprom(ahd);
written = length;
}
done:
ahd_restore_modes(ahd, saved_modes);
if (!paused)
ahd_unpause(ahd);
ahd_unlock(ahd, &s);
return (written);
}
int
ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry)
{
struct scb_data *shared_scb_data;
u_int command;
uint32_t devconfig;
uint16_t device;
uint16_t subvendor;
int error;
shared_scb_data = NULL;
ahd->description = entry->name;
/*
* Record if this is a HostRAID board.
*/
device = aic_pci_read_config(ahd->dev_softc,
PCIR_DEVICE, /*bytes*/2);
if (DEVID_9005_HOSTRAID(device))
ahd->flags |= AHD_HOSTRAID_BOARD;
/*
* Record if this is an HP board.
*/
subvendor = aic_pci_read_config(ahd->dev_softc,
PCIR_SUBVEND_0, /*bytes*/2);
if (subvendor == SUBID_HP)
ahd->flags |= AHD_HP_BOARD;
error = entry->setup(ahd);
if (error != 0)
return (error);
/*
* Find the PCI-X cap pointer. If we don't find it,
* pcix_ptr will be 0.
*/
pci_find_cap(ahd->dev_softc, PCIY_PCIX, &ahd->pcix_ptr);
devconfig = aic_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
if ((devconfig & PCIXINITPAT) == PCIXINIT_PCI33_66) {
ahd->chip |= AHD_PCI;
/* Disable PCIX workarounds when running in PCI mode. */
ahd->bugs &= ~AHD_PCIX_BUG_MASK;
} else {
ahd->chip |= AHD_PCIX;
if (ahd->pcix_ptr == 0)
return (ENXIO);
}
ahd->bus_description = pci_bus_modes[PCI_BUS_MODES_INDEX(devconfig)];
aic_power_state_change(ahd, AIC_POWER_STATE_D0);
error = ahd_pci_map_registers(ahd);
if (error != 0)
return (error);
/*
* If we need to support high memory, enable dual
* address cycles. This bit must be set to enable
* high address bit generation even if we are on a
* 64bit bus (PCI64BIT set in devconfig).
*/
if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
uint32_t devconfig;
if (bootverbose)
printf("%s: Enabling 39Bit Addressing\n",
ahd_name(ahd));
devconfig = aic_pci_read_config(ahd->dev_softc,
DEVCONFIG, /*bytes*/4);
devconfig |= DACEN;
aic_pci_write_config(ahd->dev_softc, DEVCONFIG,
devconfig, /*bytes*/4);
}
/* Ensure busmastering is enabled */
command = aic_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
command |= PCIM_CMD_BUSMASTEREN;
aic_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
error = ahd_softc_init(ahd);
if (error != 0)
return (error);
ahd->bus_intr = ahd_pci_intr;
error = ahd_reset(ahd, /*reinit*/FALSE);
if (error != 0)
return (ENXIO);
ahd->pci_cachesize =
aic_pci_read_config(ahd->dev_softc, CSIZE_LATTIME,
/*bytes*/1) & CACHESIZE;
ahd->pci_cachesize *= 4;
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
/* See if we have a SEEPROM and perform auto-term */
error = ahd_check_extport(ahd);
if (error != 0)
return (error);
/* Core initialization */
error = ahd_init(ahd);
if (error != 0)
return (error);
/*
* Allow interrupts now that we are completely setup.
*/
error = ahd_pci_map_int(ahd);
if (error != 0)
return (error);
ahd_lock(ahd);
/*
* Link this softc in with all other ahd instances.
*/
ahd_softc_insert(ahd);
ahd_unlock(ahd);
return (0);
}
void
ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments)
{
struct scb *scb;
struct scsi_xfer *xs;
struct ahd_softc *ahd;
struct ahd_initiator_tinfo *tinfo;
struct ahd_tmode_tstate *tstate;
u_int mask;
int s;
scb = (struct scb *)arg;
xs = scb->xs;
xs->error = CAM_REQ_INPROG;
xs->status = 0;
ahd = (struct ahd_softc *)xs->sc_link->adapter_softc;
if (nsegments != 0) {
void *sg;
int op;
u_int i;
ahd_setup_data_scb(ahd, scb);
/* Copy the segments into our SG list */
for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
dm_segs->ds_len,
/*last*/i == 1);
dm_segs++;
}
if ((xs->flags & SCSI_DATA_IN) != 0)
op = BUS_DMASYNC_PREREAD;
else
op = BUS_DMASYNC_PREWRITE;
bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0,
scb->dmamap->dm_mapsize, op);
}
ahd_lock(ahd, &s);
/*
* Last time we need to check if this SCB needs to
* be aborted.
*/
if (xs->flags & ITSDONE) {
if (nsegments != 0)
bus_dmamap_unload(ahd->parent_dmat,
scb->dmamap);
ahd_free_scb(ahd, scb);
ahd_unlock(ahd, &s);
return;
}
tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
SCSIID_OUR_ID(scb->hscb->scsiid),
SCSIID_TARGET(ahd, scb->hscb->scsiid),
&tstate);
mask = SCB_GET_TARGET_MASK(ahd, scb);
if ((tstate->discenable & mask) != 0)
scb->hscb->control |= DISCENB;
if ((tstate->tagenable & mask) != 0)
scb->hscb->control |= TAG_ENB;
if ((tinfo->curr.ppr_options & MSG_EXT_PPR_PROT_IUS) != 0) {
scb->flags |= SCB_PACKETIZED;
if (scb->hscb->task_management != 0)
scb->hscb->control &= ~MK_MESSAGE;
}
if ((tstate->auto_negotiate & mask) != 0) {
scb->flags |= SCB_AUTO_NEGOTIATE;
scb->hscb->control |= MK_MESSAGE;
}
/* XXX with ahc there was some bus_dmamap_sync(PREREAD|PREWRITE); */
LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
if (!(xs->flags & SCSI_POLL))
timeout_add_msec(&xs->stimeout, xs->timeout);
scb->flags |= SCB_ACTIVE;
if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
/* Define a mapping from our tag to the SCB. */
ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
ahd_pause(ahd);
ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
ahd_unpause(ahd);
} else {
ahd_queue_scb(ahd, scb);
}
if (!(xs->flags & SCSI_POLL)) {
int target = xs->sc_link->target;
int lun = SCB_GET_LUN(scb);
if (ahd->inited_target[target] == 0) {
struct ahd_devinfo devinfo;
ahd_adapter_req_set_xfer_mode(ahd, scb);
ahd_compile_devinfo(&devinfo, ahd->our_id, target, lun,
'A', /*XXX milos*/ROLE_UNKNOWN);
ahd_scb_devinfo(ahd, &devinfo, scb);
ahd_update_neg_request(ahd, &devinfo, tstate, tinfo,
AHD_NEG_IF_NON_ASYNC);
ahd->inited_target[target] = 1;
}
ahd_unlock(ahd, &s);
return;
}
/*
* If we can't use interrupts, poll for completion
*/
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_poll\n"));
do {
if (ahd_poll(ahd, xs->timeout)) {
if (!(xs->flags & SCSI_SILENT))
printf("cmd fail\n");
ahd_timeout(scb);
break;
}
} while (!(xs->flags & ITSDONE));
ahd_unlock(ahd, &s);
}
void
ahd_action(struct scsi_xfer *xs)
{
struct ahd_softc *ahd;
struct scb *scb;
struct hardware_scb *hscb;
u_int target_id;
u_int our_id;
int s;
struct ahd_initiator_tinfo *tinfo;
struct ahd_tmode_tstate *tstate;
u_int col_idx;
u_int16_t quirks;
SC_DEBUG(xs->sc_link, SDEV_DB3, ("ahd_action\n"));
ahd = (struct ahd_softc *)xs->sc_link->adapter_softc;
target_id = xs->sc_link->target;
our_id = SCSI_SCSI_ID(ahd, xs->sc_link);
ahd_lock(ahd, &s);
if ((ahd->flags & AHD_INITIATORROLE) == 0) {
xs->error = XS_DRIVER_STUFFUP;
scsi_done(xs);
ahd_unlock(ahd, &s);
return;
}
/*
* get an scb to use.
*/
tinfo = ahd_fetch_transinfo(ahd, 'A', our_id, target_id, &tstate);
quirks = xs->sc_link->quirks;
if ((quirks & SDEV_NOTAGS) != 0 ||
(tinfo->curr.ppr_options & MSG_EXT_PPR_PROT_IUS) != 0)
col_idx = AHD_NEVER_COL_IDX;
else
col_idx = AHD_BUILD_COL_IDX(target_id, xs->sc_link->lun);
if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
ahd->flags |= AHD_RESOURCE_SHORTAGE;
xs->error = XS_NO_CCB;
scsi_done(xs);
ahd_unlock(ahd, &s);
return;
}
ahd_unlock(ahd, &s);
hscb = scb->hscb;
SC_DEBUG(xs->sc_link, SDEV_DB3, ("start scb(%p)\n", scb));
scb->xs = xs;
timeout_set(&xs->stimeout, ahd_timeout, scb);
/*
* Put all the arguments for the xfer in the scb
*/
hscb->control = 0;
hscb->scsiid = BUILD_SCSIID(ahd, xs->sc_link, target_id, our_id);
hscb->lun = xs->sc_link->lun;
if (xs->xs_control & XS_CTL_RESET) {
hscb->cdb_len = 0;
scb->flags |= SCB_DEVICE_RESET;
hscb->control |= MK_MESSAGE;
hscb->task_management = SIU_TASKMGMT_LUN_RESET;
ahd_execute_scb(scb, NULL, 0);
} else {
hscb->task_management = 0;
ahd_setup_data(ahd, xs, scb);
}
}
/*
* We have an scb which has been processed by the
* adaptor, now we look to see how the operation
* went.
*/
void
ahd_done(struct ahd_softc *ahd, struct scb *scb)
{
struct scsi_xfer *xs = scb->xs;
int s;
/* XXX in ahc there is some bus_dmamap_sync(PREREAD|PREWRITE); */
LIST_REMOVE(scb, pending_links);
timeout_del(&xs->stimeout);
if (xs->datalen) {
int op;
if ((xs->flags & SCSI_DATA_IN) != 0)
op = BUS_DMASYNC_POSTREAD;
else
op = BUS_DMASYNC_POSTWRITE;
bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0,
scb->dmamap->dm_mapsize, op);
bus_dmamap_unload(ahd->parent_dmat, scb->dmamap);
}
/* Translate the CAM status code to a SCSI error code. */
switch (xs->error) {
case CAM_SCSI_STATUS_ERROR:
case CAM_REQ_INPROG:
case CAM_REQ_CMP:
switch (xs->status) {
case SCSI_TASKSET_FULL:
case SCSI_BUSY:
xs->error = XS_BUSY;
break;
case SCSI_CHECK:
case SCSI_TERMINATED:
if ((scb->flags & SCB_SENSE) == 0) {
/* CHECK on CHECK? */
xs->error = XS_DRIVER_STUFFUP;
} else
xs->error = XS_NOERROR;
break;
default:
xs->error = XS_NOERROR;
break;
}
break;
case CAM_BUSY:
case CAM_REQUEUE_REQ:
xs->error = XS_BUSY;
break;
case CAM_CMD_TIMEOUT:
xs->error = XS_TIMEOUT;
break;
case CAM_BDR_SENT:
case CAM_SCSI_BUS_RESET:
xs->error = XS_RESET;
break;
case CAM_SEL_TIMEOUT:
xs->error = XS_SELTIMEOUT;
break;
default:
xs->error = XS_DRIVER_STUFFUP;
break;
}
if (xs->error != XS_NOERROR) {
/* Don't clobber any existing error state */
} else if ((scb->flags & SCB_SENSE) != 0) {
/*
* We performed autosense retrieval.
*
* Zero any sense not transferred by the
* device. The SCSI spec mandates that any
* untransferred data should be assumed to be
* zero. Complete the 'bounce' of sense information
* through buffers accessible via bus-space by
* copying it into the clients csio.
*/
memset(&xs->sense, 0, sizeof(struct scsi_sense_data));
memcpy(&xs->sense, ahd_get_sense_buf(ahd, scb),
sizeof(struct scsi_sense_data));
xs->error = XS_SENSE;
} else if ((scb->flags & SCB_PKT_SENSE) != 0) {
struct scsi_status_iu_header *siu;
u_int32_t len;
siu = (struct scsi_status_iu_header *)scb->sense_data;
len = SIU_SENSE_LENGTH(siu);
memset(&xs->sense, 0, sizeof(xs->sense));
memcpy(&xs->sense, SIU_SENSE_DATA(siu),
ulmin(len, sizeof(xs->sense)));
xs->error = XS_SENSE;
}
ahd_lock(ahd, &s);
ahd_free_scb(ahd, scb);
scsi_done(xs);
ahd_unlock(ahd, &s);
}
