/*
* Function name: tw_osli_print_ctlr_stats
* Description: For being called from ddb. Prints OSL controller stats
*
* Input: sc -- ptr to OSL internal controller context
* Output: None
* Return value: None
*/
TW_VOID
tw_osli_print_ctlr_stats(struct twa_softc *sc)
{
twa_printf(sc, "osl_ctlr_ctxt = %p\n", sc);
twa_printf(sc, "OSLq type current max\n");
twa_printf(sc, "free %04d %04d\n",
sc->q_stats[TW_OSLI_FREE_Q].cur_len,
sc->q_stats[TW_OSLI_FREE_Q].max_len);
twa_printf(sc, "busy %04d %04d\n",
sc->q_stats[TW_OSLI_BUSY_Q].cur_len,
sc->q_stats[TW_OSLI_BUSY_Q].max_len);
}
/*
* Function name: twa_print_req_info
* Description: For being called from ddb. Calls functions that print
* OSL and CL internal details for the request.
*
* Input: req -- ptr to OSL internal request context
* Output: None
* Return value: None
*/
TW_VOID
twa_print_req_info(struct tw_osli_req_context *req)
{
struct twa_softc *sc = req->ctlr;
twa_printf(sc, "OSL details for request:\n");
twa_printf(sc, "osl_req_ctxt = %p, cl_req_ctxt = %p\n"
"data = %p, length = 0x%x, real_data = %p, real_length = 0x%x\n"
"state = 0x%x, flags = 0x%x, error = 0x%x, orig_req = %p\n"
"next_req = %p, prev_req = %p, dma_map = %p\n",
req->req_handle.osl_req_ctxt, req->req_handle.cl_req_ctxt,
req->data, req->length, req->real_data, req->real_length,
req->state, req->flags, req->error_code, req->orig_req,
req->link.next, req->link.prev, req->dma_map);
tw_cl_print_req_info(&(req->req_handle));
}
/*
* Function name: twa_print_request
* Description: Prints a given request if it's in the wrong queue.
*
* Input: tr -- ptr to request pkt
* req_type-- expected status of the given request
* Output: None
* Return value: None
*/
void
twa_print_request(struct twa_request *tr, int req_type)
{
struct twa_softc *sc = tr->tr_sc;
struct twa_command_packet *cmdpkt = tr->tr_command;
struct twa_command_9k *cmd9k;
union twa_command_7k *cmd7k;
u_int8_t *cdb;
int cmd_phys_addr;
if (tr->tr_status != req_type) {
twa_printf(sc, "Invalid %s request %p in queue! req_type = %x, queue_type = %x\n",
(tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_INTERNAL) ? "INTERNAL" : "EXTERNAL",
tr, tr->tr_status, req_type);
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_9K) {
cmd9k = &(cmdpkt->command.cmd_pkt_9k);
cmd_phys_addr = cmd9k->sg_list[0].address;
twa_printf(sc, "9K cmd = %x %x %x %x %x %x %x %x %jx\n",
cmd9k->command.opcode,
cmd9k->command.reserved,
cmd9k->unit,
cmd9k->request_id,
cmd9k->status,
cmd9k->sgl_offset,
cmd9k->sgl_entries,
cmd_phys_addr,
(uintmax_t)cmd9k->sg_list[0].length);
cdb = (u_int8_t *)(cmdpkt->command.cmd_pkt_9k.cdb);
twa_printf(sc, "cdb = %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x\n",
cdb[0], cdb[1], cdb[2], cdb[3], cdb[4], cdb[5], cdb[6], cdb[7],
cdb[8], cdb[9], cdb[10], cdb[11], cdb[12], cdb[13], cdb[14], cdb[15]);
} else {
cmd7k = &(cmdpkt->command.cmd_pkt_7k);
twa_printf(sc, "7K cmd = %x %x %x %x %x %x %x %x %x\n",
cmd7k->generic.opcode,
cmd7k->generic.sgl_offset,
cmd7k->generic.size,
cmd7k->generic.request_id,
cmd7k->generic.unit,
cmd7k->generic.host_id,
cmd7k->generic.status,
cmd7k->generic.flags,
cmd7k->generic.count);
}
cmd_phys_addr = (int)(tr->tr_cmd_phys);
twa_printf(sc, "cmdphys=0x%x data=%p length=0x%jx\n",
cmd_phys_addr, tr->tr_data, (uintmax_t)tr->tr_length);
twa_printf(sc, "req_id=0x%x flags=0x%x callback=%p private=%p\n",
tr->tr_request_id, tr->tr_flags,
tr->tr_callback, tr->tr_private);
}
}
/*
* Function name: twa_scsi_complete
* Description: Called to complete CAM scsi requests.
*
* Input: tr -- ptr to request pkt to be completed
* Output: None
* Return value: None
*/
void
twa_scsi_complete(struct twa_request *tr)
{
struct twa_softc *sc = tr->tr_sc;
struct twa_command_header *cmd_hdr = &(tr->tr_command->cmd_hdr);
struct twa_command_9k *cmd = &(tr->tr_command->command.cmd_pkt_9k);
union ccb *ccb = (union ccb *)(tr->tr_private);
u_int16_t error;
u_int8_t *cdb;
if (tr->tr_error) {
if (tr->tr_error == EBUSY)
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
else if (tr->tr_error == EFBIG)
ccb->ccb_h.status = CAM_REQ_TOO_BIG;
else
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
} else {
if (cmd->status) {
twa_dbg_dprint(1, sc, "req_id = 0x%x, status = 0x%x",
cmd->request_id,
cmd->status);
error = cmd_hdr->status_block.error;
if ((error == TWA_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) ||
(error == TWA_ERROR_UNIT_OFFLINE)) {
twa_dbg_dprint(3, sc, "Unsupported unit. PTL = %x %x %x",
ccb->ccb_h.path_id,
ccb->ccb_h.target_id,
ccb->ccb_h.target_lun);
ccb->ccb_h.status |= CAM_TID_INVALID;
} else {
twa_dbg_dprint(2, sc, "cmd = %x %x %x %x %x %x %x",
cmd->command.opcode,
cmd->command.reserved,
cmd->unit,
cmd->request_id,
cmd->status,
cmd->sgl_offset,
cmd->sgl_entries);
cdb = (u_int8_t *)(cmd->cdb);
twa_dbg_dprint(2, sc, "cdb = %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x",
cdb[0], cdb[1], cdb[2], cdb[3], cdb[4], cdb[5], cdb[6], cdb[7],
cdb[8], cdb[9], cdb[10], cdb[11], cdb[12], cdb[13], cdb[14], cdb[15]);
cmd_hdr->err_specific_desc[sizeof(cmd_hdr->err_specific_desc) - 1] = '\0';
/*
* Print the error. Firmware doesn't yet support
* the 'Mode Sense' cmd. Don't print if the cmd
* is 'Mode Sense', and the error is 'Invalid field
* in CDB'.
*/
if (! ((cdb[0] == 0x1A) && (error == 0x10D)))
twa_printf(sc, "SCSI cmd = 0x%x: ERROR: (0x%02X: 0x%04X): %s: %s\n",
cdb[0],
TWA_MESSAGE_SOURCE_CONTROLLER_ERROR,
error,
twa_find_msg_string(twa_error_table, error),
cmd_hdr->err_specific_desc);
}
bcopy(cmd_hdr->sense_data, &(ccb->csio.sense_data),
TWA_SENSE_DATA_LENGTH);
ccb->csio.sense_len = TWA_SENSE_DATA_LENGTH;
ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
} else
ccb->ccb_h.status = CAM_REQ_CMP;
ccb->csio.scsi_status = cmd->status;
/* If simq is frozen, unfreeze it. */
if (sc->twa_state & TWA_STATE_SIMQ_FROZEN)
twa_allow_new_requests(sc, (void *)ccb);
}
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
xpt_done(ccb);
}
/*
* Function name: twa_action
* Description: Driver entry point for CAM's use.
*
* Input: sim -- sim corresponding to the ctlr
* ccb -- ptr to CAM request
* Output: None
* Return value: None
*/
void
twa_action(struct cam_sim *sim, union ccb *ccb)
{
struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim);
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
switch (ccb_h->func_code) {
case XPT_SCSI_IO: /* SCSI I/O */
{
struct twa_request *tr;
if ((sc->twa_state & TWA_STATE_SIMQ_FROZEN) ||
((tr = twa_get_request(sc)) == NULL)) {
twa_dbg_dprint(2, sc, "simq frozen/Cannot get request pkt.");
/*
* Freeze the simq to maintain ccb ordering. The next
* ccb that gets completed will unfreeze the simq.
*/
twa_disallow_new_requests(sc);
ccb_h->status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
break;
}
tr->tr_cmd_pkt_type |= TWA_CMD_PKT_TYPE_EXTERNAL;
tr->tr_private = ccb;
tr->tr_callback = twa_complete_io;
if (twa_execute_scsi(tr, ccb))
twa_release_request(tr);
break;
}
case XPT_ABORT:
twa_dbg_dprint(2, sc, "Abort request");
ccb_h->status = CAM_UA_ABORT;
xpt_done(ccb);
break;
case XPT_RESET_BUS:
twa_printf(sc, "Reset Bus request from CAM...\n");
if (twa_reset(sc)) {
twa_printf(sc, "Reset Bus failed!\n");
ccb_h->status = CAM_REQ_CMP_ERR;
}
else
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
case XPT_SET_TRAN_SETTINGS:
twa_dbg_dprint(3, sc, "XPT_SET_TRAN_SETTINGS");
/*
* This command is not supported, since it's very specific
* to SCSI, and we are doing ATA.
*/
ccb_h->status = CAM_FUNC_NOTAVAIL;
xpt_done(ccb);
break;
case XPT_GET_TRAN_SETTINGS:
{
struct ccb_trans_settings *cts = &ccb->cts;
twa_dbg_dprint(3, sc, "XPT_GET_TRAN_SETTINGS");
cts->valid = (CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID);
cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB);
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *geom;
twa_dbg_dprint(3, sc, "XPT_CALC_GEOMETRY request");
geom = &ccb->ccg;
if (geom->volume_size > 0x200000) /* 1 GB */ {
geom->heads = 255;
geom->secs_per_track = 63;
} else {
geom->heads = 64;
geom->secs_per_track = 32;
}
geom->cylinders = geom->volume_size /
(geom->heads * geom->secs_per_track);
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_PATH_INQ: /* Path inquiry -- get twa properties */
{
struct ccb_pathinq *path_inq = &ccb->cpi;
twa_dbg_dprint(3, sc, "XPT_PATH_INQ request");
path_inq->version_num = 1;
path_inq->hba_inquiry = 0;
path_inq->target_sprt = 0;
path_inq->hba_misc = 0;
path_inq->hba_eng_cnt = 0;
path_inq->max_target = TWA_MAX_UNITS;
path_inq->max_lun = 0;
path_inq->unit_number = cam_sim_unit(sim);
path_inq->bus_id = cam_sim_bus(sim);
path_inq->initiator_id = 12;
path_inq->base_transfer_speed = 100000;
strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN);
strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN);
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
default:
twa_dbg_dprint(3, sc, "func_code = %x", ccb_h->func_code);
ccb_h->status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
}
/*
* Function name: twa_execute_scsi
* Description: Build a fw cmd, based on a CAM style ccb, and
* send it down.
*
* Input: tr -- ptr to request pkt
* ccb -- ptr to CAM style ccb
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
int
twa_execute_scsi(struct twa_request *tr, union ccb *ccb)
{
struct twa_softc *sc = tr->tr_sc;
struct twa_command_packet *cmdpkt;
struct twa_command_9k *cmd9k;
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
struct ccb_scsiio *csio = &(ccb->csio);
int error;
twa_dbg_dprint(3, sc, "SCSI I/O request 0x%x",
csio->cdb_io.cdb_bytes[0]);
if (ccb_h->target_id >= TWA_MAX_UNITS) {
twa_dbg_dprint(3, sc, "Invalid target. PTL = %x %x %x",
ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun);
ccb_h->status |= CAM_TID_INVALID;
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_EXTERNAL)
xpt_done(ccb);
return(1);
}
if (ccb_h->target_lun != 0) {
twa_dbg_dprint(3, sc, "Invalid lun. PTL = %x %x %x",
ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun);
ccb_h->status |= CAM_LUN_INVALID;
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_EXTERNAL)
xpt_done(ccb);
return(1);
}
if(ccb_h->flags & CAM_CDB_PHYS) {
twa_printf(sc, "Physical CDB address!\n");
ccb_h->status = CAM_REQ_CMP_ERR;
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_EXTERNAL)
xpt_done(ccb);
return(1);
}
/*
* We are going to work on this request. Mark it as enqueued (though
* we don't actually queue it...)
*/
ccb_h->status |= CAM_SIM_QUEUED;
if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
if(ccb_h->flags & CAM_DIR_IN)
tr->tr_flags |= TWA_CMD_DATA_IN;
else
tr->tr_flags |= TWA_CMD_DATA_OUT;
}
cmdpkt = tr->tr_command;
cmdpkt->cmd_hdr.header_desc.size_header = 128;
cmd9k = &(cmdpkt->command.cmd_pkt_9k);
cmd9k->command.opcode = TWA_OP_EXECUTE_SCSI_COMMAND;
cmd9k->unit = ccb_h->target_id;
cmd9k->request_id = tr->tr_request_id;
cmd9k->status = 0;
cmd9k->sgl_offset = 16; /* offset from end of hdr = max cdb len */
if(ccb_h->flags & CAM_CDB_POINTER)
bcopy(csio->cdb_io.cdb_ptr, cmd9k->cdb, csio->cdb_len);
else
bcopy(csio->cdb_io.cdb_bytes, cmd9k->cdb, csio->cdb_len);
if (!(ccb_h->flags & CAM_DATA_PHYS)) {
/* Virtual data addresses. Need to convert them... */
twa_dbg_dprint(3, sc, "XPT_SCSI_IO: Single virtual address!");
if (!(ccb_h->flags & CAM_SCATTER_VALID)) {
if (csio->dxfer_len > TWA_MAX_IO_SIZE) {
twa_printf(sc, "I/O size %d too big.\n",
csio->dxfer_len);
ccb_h->status = CAM_REQ_TOO_BIG;
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_EXTERNAL)
xpt_done(ccb);
return(1);
}
if ((tr->tr_length = csio->dxfer_len)) {
tr->tr_data = csio->data_ptr;
cmd9k->sgl_entries = 1;
}
} else {
twa_printf(sc, "twa_execute_scsi: XPT_SCSI_IO: Got SGList!\n");
ccb_h->status = CAM_REQ_CMP_ERR;
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_EXTERNAL) {
xpt_done(ccb);
}
return(1);
}
} else {
/* Data addresses are physical. */
twa_printf(sc, "twa_execute_scsi: XPT_SCSI_IO: Physical data addresses!\n");
ccb_h->status = CAM_REQ_CMP_ERR;
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_EXTERNAL) {
ccb_h->status |= CAM_RELEASE_SIMQ;
ccb_h->status &= ~CAM_SIM_QUEUED;
xpt_done(ccb);
}
return(1);
}
tr->tr_cmd_pkt_type |= TWA_CMD_PKT_TYPE_9K;
/* twa_setup_data_dmamap will fill in the SGL, and submit the I/O. */
error = twa_map_request(tr);
return(error);
}
/*
* Function name: twa_map_request
* Description: Maps a cmd pkt and data associated with it, into
* DMA'able memory.
*
* Input: tr -- ptr to request pkt
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
int
twa_map_request(struct twa_request *tr)
{
struct twa_softc *sc = tr->tr_sc;
int error = 0;
twa_dbg_dprint_enter(10, sc);
/* If the command involves data, map that too. */
if (tr->tr_data != NULL) {
/*
* It's sufficient for the data pointer to be 4-byte aligned
* to work with 9000. However, if 4-byte aligned addresses
* are passed to bus_dmamap_load, we can get back sg elements
* that are not 512-byte multiples in size. So, we will let
* only those buffers that are 512-byte aligned to pass
* through, and bounce the rest, so as to make sure that we
* always get back sg elements that are 512-byte multiples
* in size.
*/
if (((vm_offset_t)tr->tr_data % 512) || (tr->tr_length % 512)) {
tr->tr_flags |= TWA_CMD_DATA_COPY_NEEDED;
tr->tr_real_data = tr->tr_data; /* save original data pointer */
tr->tr_real_length = tr->tr_length; /* save original data length */
tr->tr_length = (tr->tr_length + 511) & ~511;
tr->tr_data = malloc(tr->tr_length, TWA_MALLOC_CLASS, M_NOWAIT);
if (tr->tr_data == NULL) {
twa_printf(sc, "%s: malloc failed\n", __func__);
tr->tr_data = tr->tr_real_data; /* restore original data pointer */
tr->tr_length = tr->tr_real_length; /* restore original data length */
return(ENOMEM);
}
}
/*
* Map the data buffer into bus space and build the s/g list.
*/
if ((error = bus_dmamap_load(sc->twa_dma_tag, tr->tr_dma_map,
tr->tr_data, tr->tr_length,
twa_setup_data_dmamap, tr,
BUS_DMA_WAITOK))) {
if (error == EINPROGRESS) {
tr->tr_flags |= TWA_CMD_IN_PROGRESS;
if (tr->tr_cmd_pkt_type & TWA_CMD_PKT_TYPE_EXTERNAL)
twa_disallow_new_requests(sc);
error = 0;
} else {
/* Free alignment buffer if it was used. */
if (tr->tr_flags & TWA_CMD_DATA_COPY_NEEDED) {
free(tr->tr_data, TWA_MALLOC_CLASS);
tr->tr_data = tr->tr_real_data; /* restore 'real' data pointer */
tr->tr_length = tr->tr_real_length;/* restore 'real' data length */
}
}
} else
error = tr->tr_error;
} else
if ((error = twa_submit_io(tr)))
twa_unmap_request(tr);
return(error);
}
/*
* Function name: twa_alloc_req_pkts
* Description: Allocates memory for, and initializes request pkts,
* and queues them in the free queue.
*
* Input: sc -- ptr to per ctlr structure
* num_reqs-- # of request pkts to allocate and initialize.
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
int
twa_alloc_req_pkts(struct twa_softc *sc, int num_reqs)
{
struct twa_request *tr;
int i;
if ((sc->twa_req_buf = malloc(num_reqs * sizeof(struct twa_request),
TWA_MALLOC_CLASS, M_NOWAIT)) == NULL)
return(ENOMEM);
/* Allocate the bus DMA tag appropriate for PCI. */
if (bus_dma_tag_create(NULL, /* parent */
TWA_ALIGNMENT, /* alignment */
0, /* boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
TWA_Q_LENGTH *
(sizeof(struct twa_command_packet)),/* maxsize */
TWA_MAX_SG_ELEMENTS, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
BUS_DMA_ALLOCNOW, /* flags */
busdma_lock_mutex, /* lockfunc */
&Giant, /* lockfuncarg */
&sc->twa_dma_tag /* tag */)) {
twa_printf(sc, "Can't allocate DMA tag.\n");
return(ENOMEM);
}
/* Allocate memory for cmd pkts. */
if (bus_dmamem_alloc(sc->twa_dma_tag,
(void *)(&(sc->twa_cmd_pkt_buf)),
BUS_DMA_WAITOK, &(sc->twa_cmd_map)))
return(ENOMEM);
bus_dmamap_load(sc->twa_dma_tag, sc->twa_cmd_map,
sc->twa_cmd_pkt_buf,
num_reqs * sizeof(struct twa_command_packet),
twa_setup_request_dmamap, sc, 0);
bzero(sc->twa_req_buf, num_reqs * sizeof(struct twa_request));
bzero(sc->twa_cmd_pkt_buf,
num_reqs * sizeof(struct twa_command_packet));
for (i = 0; i < num_reqs; i++) {
tr = &(sc->twa_req_buf[i]);
tr->tr_command = &(sc->twa_cmd_pkt_buf[i]);
tr->tr_cmd_phys = sc->twa_cmd_pkt_phys +
(i * sizeof(struct twa_command_packet));
tr->tr_request_id = i;
tr->tr_sc = sc;
sc->twa_lookup[i] = tr;
/*
* Create a map for data buffers. maxsize (256 * 1024) used in
* bus_dma_tag_create above should suffice the bounce page needs
* for data buffers, since the max I/O size we support is 128KB.
* If we supported I/O's bigger than 256KB, we would have to
* create a second dma_tag, with the appropriate maxsize.
*/
if (bus_dmamap_create(sc->twa_dma_tag, 0,
&tr->tr_dma_map))
return(ENOMEM);
/* Insert request into the free queue. */
twa_release_request(tr);
}
return(0);
}
/*
* Function name: twa_attach
* Description: Allocates pci resources; updates sc; adds a node to the
* sysctl tree to expose the driver version; makes calls
* to initialize ctlr, and to attach to CAM.
*
* Input: dev -- bus device corresponding to the ctlr
* Output: None
* Return value: 0 -- success
* non-zero-- failure
*/
static int
twa_attach(device_t dev)
{
struct twa_softc *sc = device_get_softc(dev);
u_int32_t command;
int res_id;
int error;
twa_dbg_dprint_enter(3, sc);
/* Initialize the softc structure. */
sc->twa_bus_dev = dev;
sysctl_ctx_init(&sc->twa_sysctl_ctx);
sc->twa_sysctl_tree = SYSCTL_ADD_NODE(&sc->twa_sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
device_get_nameunit(dev), CTLFLAG_RD, 0, "");
if (sc->twa_sysctl_tree == NULL) {
twa_printf(sc, "Cannot add sysctl tree node.\n");
return(ENXIO);
}
SYSCTL_ADD_STRING(&sc->twa_sysctl_ctx, SYSCTL_CHILDREN(sc->twa_sysctl_tree),
OID_AUTO, "driver_version", CTLFLAG_RD,
TWA_DRIVER_VERSION_STRING, 0, "TWA driver version");
/* Make sure we are going to be able to talk to this board. */
command = pci_read_config(dev, PCIR_COMMAND, 2);
if ((command & PCIM_CMD_PORTEN) == 0) {
twa_printf(sc, "Register window not available.\n");
return(ENXIO);
}
/* Force the busmaster enable bit on, in case the BIOS forgot. */
command |= PCIM_CMD_BUSMASTEREN;
pci_write_config(dev, PCIR_COMMAND, command, 2);
/* Allocate the PCI register window. */
res_id = TWA_IO_CONFIG_REG;
if ((sc->twa_io_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &res_id,
0, ~0, 1, RF_ACTIVE)) == NULL) {
twa_printf(sc, "can't allocate register window.\n");
twa_free(sc);
return(ENXIO);
}
sc->twa_bus_tag = rman_get_bustag(sc->twa_io_res);
sc->twa_bus_handle = rman_get_bushandle(sc->twa_io_res);
/* Allocate and connect our interrupt. */
res_id = 0;
if ((sc->twa_irq_res = bus_alloc_resource(sc->twa_bus_dev, SYS_RES_IRQ,
&res_id, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE)) == NULL) {
twa_printf(sc, "Can't allocate interrupt.\n");
twa_free(sc);
return(ENXIO);
}
if (bus_setup_intr(sc->twa_bus_dev, sc->twa_irq_res, INTR_TYPE_CAM,
twa_pci_intr, sc, &sc->twa_intr_handle)) {
twa_printf(sc, "Can't set up interrupt.\n");
twa_free(sc);
return(ENXIO);
}
/* Initialize the driver for this controller. */
if ((error = twa_setup(sc))) {
twa_free(sc);
return(error);
}
/* Print some information about the controller and configuration. */
twa_describe_controller(sc);
/* Create the control device. */
sc->twa_ctrl_dev = make_dev(&twa_cdevsw, device_get_unit(sc->twa_bus_dev),
UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
"twa%d", device_get_unit(sc->twa_bus_dev));
sc->twa_ctrl_dev->si_drv1 = sc;
/*
* Schedule ourselves to bring the controller up once interrupts are
* available. This isn't strictly necessary, since we disable
* interrupts while probing the controller, but it is more in keeping
* with common practice for other disk devices.
*/
sc->twa_ich.ich_func = twa_intrhook;
sc->twa_ich.ich_arg = sc;
if (config_intrhook_establish(&sc->twa_ich) != 0) {
twa_printf(sc, "Can't establish configuration hook.\n");
twa_free(sc);
return(ENXIO);
}
if ((error = twa_cam_setup(sc))) {
twa_free(sc);
return(error);
}
return(0);
}