socal.c

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	}
	sw_cq = s->req + qno;
	cq_next_in = (sw_cq->in + 1) & sw_cq->last;
	
	if (cq_next_in == sw_cq->out &&
	    cq_next_in == (sw_cq->out = sbus_readb(s->regs + REQP + qno))) {
		SOD(("%d IN %d OUT %d LAST %d\n",
		     qno, sw_cq->in,
		     sw_cq->out, sw_cq->last))
		SOCAL_SETIMASK(s, s->imask | (SOCAL_IMASK_REQ_Q0 << qno));
		SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));

		/* If queue is full, just say NO. */
		return -EBUSY;
	}
	
	request = sw_cq->pool + sw_cq->in;
	fch = &request->fchdr;
	
	switch (fcmd->proto) {
	case TYPE_SCSI_FCP:
		request->shdr.token = TOKEN(TYPE_SCSI_FCP, port->mask, fcmd->token); 
		request->data[0].base = fc->dma_scsi_cmd + fcmd->token * sizeof(fcp_cmd);
		request->data[0].count = sizeof(fcp_cmd);
		request->data[1].base = fc->dma_scsi_rsp + fcmd->token * fc->rsp_size;
		request->data[1].count = fc->rsp_size;
		if (fcmd->data) {
			request->shdr.segcnt = 3;
			i = fc->scsi_cmd_pool[fcmd->token].fcp_data_len;
			request->shdr.bytecnt = i;
			request->data[2].base = fcmd->data;
			request->data[2].count = i;
			request->type = (fc->scsi_cmd_pool[fcmd->token].fcp_cntl & FCP_CNTL_WRITE) ?
				SOCAL_CQTYPE_IO_WRITE : SOCAL_CQTYPE_IO_READ;
		} else {
			request->shdr.segcnt = 2;
			request->shdr.bytecnt = 0;
			request->data[2].base = 0;
			request->data[2].count = 0;
			request->type = SOCAL_CQTYPE_SIMPLE;
		}
		FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
		FILL_FCHDR_SID(fch, fc->sid);
		FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
		FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
		FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
		fch->param = 0;
		request->shdr.flags = port->flags;
		request->shdr.class = fc->posmap ? 3 : 2;
		break;
		
	case PROTO_OFFLINE:
		memset (request, 0, sizeof(*request));
		request->shdr.token = TOKEN(PROTO_OFFLINE, port->mask, fcmd->token); 
		request->type = SOCAL_CQTYPE_OFFLINE;
		FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
		FILL_FCHDR_SID(fch, fc->sid);
		FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
		FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
		FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
		request->shdr.flags = port->flags;
		break;
		
	case PROTO_REPORT_AL_MAP:
		memset (request, 0, sizeof(*request));
		request->shdr.token = TOKEN(PROTO_REPORT_AL_MAP, port->mask, fcmd->token); 
		request->type = SOCAL_CQTYPE_REPORT_MAP;
		request->shdr.flags = port->flags;
		request->shdr.segcnt = 1;
		request->shdr.bytecnt = sizeof(fc_al_posmap);
		request->data[0].base = fcmd->cmd;
		request->data[0].count = sizeof(fc_al_posmap);
		break;

	default: 
		request->shdr.token = TOKEN(fcmd->proto, port->mask, fcmd->token);
		request->shdr.class = fc->posmap ? 3 : 2;
		request->shdr.flags = port->flags;
		memcpy (fch, &fcmd->fch, sizeof(fc_hdr));
		request->data[0].count = fcmd->cmdlen;
		request->data[1].count = fcmd->rsplen;
		request->type = fcmd->class;
		switch (fcmd->class) {
		case FC_CLASS_OUTBOUND:
			request->data[0].base = fcmd->cmd;
			request->data[0].count = fcmd->cmdlen;
			request->type = SOCAL_CQTYPE_OUTBOUND;
			request->shdr.bytecnt = fcmd->cmdlen;
			request->shdr.segcnt = 1;
			break;
		case FC_CLASS_INBOUND:
			request->data[0].base = fcmd->rsp;
			request->data[0].count = fcmd->rsplen;
			request->type = SOCAL_CQTYPE_INBOUND;
			request->shdr.bytecnt = 0;
			request->shdr.segcnt = 1;
			break;
		case FC_CLASS_SIMPLE:
			request->data[0].base = fcmd->cmd;
			request->data[1].base = fcmd->rsp;
			request->data[0].count = fcmd->cmdlen;
			request->data[1].count = fcmd->rsplen;
			request->type = SOCAL_CQTYPE_SIMPLE;
			request->shdr.bytecnt = fcmd->cmdlen;
			request->shdr.segcnt = 2;
			break;
		case FC_CLASS_IO_READ:
		case FC_CLASS_IO_WRITE:
			request->data[0].base = fcmd->cmd;
			request->data[1].base = fcmd->rsp;
			request->data[0].count = fcmd->cmdlen;
			request->data[1].count = fcmd->rsplen;
			request->type = (fcmd->class == FC_CLASS_IO_READ) ? SOCAL_CQTYPE_IO_READ : SOCAL_CQTYPE_IO_WRITE;
			if (fcmd->data) {
				request->data[2].base = fcmd->data;
				request->data[2].count = fcmd->datalen;
				request->shdr.bytecnt = fcmd->datalen;
				request->shdr.segcnt = 3;
			} else {
				request->shdr.bytecnt = 0;
				request->shdr.segcnt = 2;
			}
			break;
		}
		break;
	}

	request->count = 1;
	request->flags = 0;
	request->seqno = sw_cq->seqno;
	
	SOD(("queueing token %08x\n", request->shdr.token))
	
	/* And now tell the SOCAL about it */

	if (++sw_cq->in > sw_cq->last) {
		sw_cq->in = 0;
		sw_cq->seqno++;
	}
	
	SOD(("Putting %08x into cmd\n", SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno)))
	
	sbus_writel(SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno),
		    s->regs + CMD);

	/* Read so that command is completed */	
	sbus_readl(s->regs + CMD);
	
	return 0;
}

static inline void socal_download_fw(struct socal *s)
{
#ifdef HAVE_SOCAL_UCODE
	SOD(("Loading %ld bytes from %p to %p\n", sizeof(socal_ucode), socal_ucode, s->xram))
	socal_copy_to_xram(s->xram, socal_ucode, sizeof(socal_ucode));
	SOD(("Clearing the rest of memory\n"))
	socal_bzero (s->xram + sizeof(socal_ucode), 65536 - sizeof(socal_ucode));
	SOD(("Done\n"))
#endif
}

/* Check for what the best SBUS burst we can use happens
 * to be on this machine.
 */
static inline void socal_init_bursts(struct socal *s, struct sbus_dev *sdev)
{
	int bsizes, bsizes_more;
	u32 cfg;

	bsizes = (prom_getintdefault(sdev->prom_node,"burst-sizes",0xff) & 0xff);
	bsizes_more = (prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff) & 0xff);
	bsizes &= bsizes_more;
#ifdef USE_64BIT_MODE
#ifdef __sparc_v9__
	mmu_set_sbus64(sdev, bsizes >> 16);
#endif
#endif
	if ((bsizes & 0x7f) == 0x7f)
		cfg = SOCAL_CFG_BURST_64;
	else if ((bsizes & 0x3f) == 0x3f) 
		cfg = SOCAL_CFG_BURST_32;
	else if ((bsizes & 0x1f) == 0x1f)
		cfg = SOCAL_CFG_BURST_16;
	else
		cfg = SOCAL_CFG_BURST_4;
#ifdef USE_64BIT_MODE
#ifdef __sparc_v9__
	/* What is BURST_128? -jj */
	if ((bsizes & 0x780000) == 0x780000)
		cfg |= (SOCAL_CFG_BURST_64 << 8) | SOCAL_CFG_SBUS_ENHANCED;
	else if ((bsizes & 0x380000) == 0x380000) 
		cfg |= (SOCAL_CFG_BURST_32 << 8) | SOCAL_CFG_SBUS_ENHANCED;
	else if ((bsizes & 0x180000) == 0x180000)
		cfg |= (SOCAL_CFG_BURST_16 << 8) | SOCAL_CFG_SBUS_ENHANCED;
	else
		cfg |= (SOCAL_CFG_BURST_8 << 8) | SOCAL_CFG_SBUS_ENHANCED;
#endif
#endif		
	s->cfg = cfg;
}

static inline void socal_init(struct sbus_dev *sdev, int no)
{
	unsigned char tmp[60];
	int propl;
	struct socal *s;
	static unsigned version_printed = 0;
	socal_hw_cq cq[8];
	int size, i;
	int irq, node;
	
	s = kmalloc (sizeof (struct socal), GFP_KERNEL);
	if (!s) return;
	memset (s, 0, sizeof(struct socal));
	s->socal_no = no;

	SOD(("socals %08lx socal_intr %08lx socal_hw_enque %08lx\n",
	     (long)socals, (long)socal_intr, (long)socal_hw_enque))
	if (version_printed++ == 0)
		printk (version);

	s->port[0].fc.module = THIS_MODULE;
	s->port[1].fc.module = THIS_MODULE;
                                	
	s->next = socals;
	socals = s;
	s->port[0].fc.dev = sdev;
	s->port[1].fc.dev = sdev;
	s->port[0].s = s;
	s->port[1].s = s;

	s->port[0].fc.next = &s->port[1].fc;

	/* World Wide Name of SOCAL */
	propl = prom_getproperty (sdev->prom_node, "wwn", tmp, sizeof(tmp));
	if (propl != sizeof (fc_wwn)) {
		s->wwn.naaid = NAAID_IEEE_REG;
		s->wwn.nportid = 0x123;
		s->wwn.hi = 0x1234;
		s->wwn.lo = 0x12345678;
	} else
		memcpy (&s->wwn, tmp, sizeof (fc_wwn));
	
	memcpy (&s->port[0].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
	s->port[0].fc.wwn_nport.lo++;
	memcpy (&s->port[1].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
	s->port[1].fc.wwn_nport.lo+=2;
	
	node = prom_getchild (sdev->prom_node);
	while (node && (node = prom_searchsiblings (node, "sf"))) {
		int port;
		
		port = prom_getintdefault(node, "port#", -1);
		switch (port) {
		case 0:
		case 1:
			if (prom_getproplen(node, "port-wwn") == sizeof (fc_wwn))
				prom_getproperty (node, "port-wwn", 
						  (char *)&s->port[port].fc.wwn_nport,
						  sizeof (fc_wwn));
			break;
		default:
			break;
		};

		node = prom_getsibling(node);
	}

	memcpy (&s->port[0].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
	memcpy (&s->port[1].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
	SOD(("Got wwns %08x%08x ports %08x%08x and %08x%08x\n", 
	     *(u32 *)&s->port[0].fc.wwn_node, s->port[0].fc.wwn_node.lo,
	     *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo,
	     *(u32 *)&s->port[1].fc.wwn_nport, s->port[1].fc.wwn_nport.lo))
		
	s->port[0].fc.sid = 1;
	s->port[1].fc.sid = 17;
	s->port[0].fc.did = 2;
	s->port[1].fc.did = 18;
	
	s->port[0].fc.reset = socal_reset;
	s->port[1].fc.reset = socal_reset;
	
	if (sdev->num_registers == 1) {
		s->eeprom = sbus_ioremap(&sdev->resource[0], 0,
					 sdev->reg_addrs[0].reg_size, "socal xram");
		if (sdev->reg_addrs[0].reg_size > 0x20000)
			s->xram = s->eeprom + 0x10000UL;
		else
			s->xram = s->eeprom;
		s->regs = (s->xram + 0x10000UL);
	} else {
		/* E.g. starfire presents 3 registers for SOCAL */
		s->xram = sbus_ioremap(&sdev->resource[1], 0,
				       sdev->reg_addrs[1].reg_size, "socal xram");
		s->regs = sbus_ioremap(&sdev->resource[2], 0,
				       sdev->reg_addrs[2].reg_size, "socal regs");
	}
	
	socal_init_bursts(s, sdev);
	
	SOD(("Disabling SOCAL\n"))
	
	socal_disable (s);
	
	irq = sdev->irqs[0];

	if (request_irq (irq, socal_intr, SA_SHIRQ, "SOCAL", (void *)s)) {
		socal_printk ("Cannot order irq %d to go\n", irq);
		socals = s->next;
		return;
	}

	SOD(("SOCAL uses IRQ %s\n", __irq_itoa(irq)))
	
	s->port[0].fc.irq = irq;
	s->port[1].fc.irq = irq;
	
	sprintf (s->port[0].fc.name, "socal%d port A", no);
	sprintf (s->port[1].fc.name, "socal%d port B", no);
	s->port[0].flags = SOCAL_FC_HDR | SOCAL_PORT_A;
	s->port[1].flags = SOCAL_FC_HDR | SOCAL_PORT_B;
	s->port[1].mask = (1 << 11);
	
	s->port[0].fc.hw_enque = socal_hw_enque;
	s->port[1].fc.hw_enque = socal_hw_enque;
	
	socal_download_fw (s);
	
	SOD(("Downloaded firmware\n"))

	/* Now setup xram circular queues */
	memset (cq, 0, sizeof(cq));

	size = (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE +
		SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE +
		SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req);
	s->req_cpu = sbus_alloc_consistent(sdev, size, &s->req_dvma);
	s->req[0].pool = s->req_cpu;
	cq[0].address = s->req_dvma;
	s->req[1].pool = s->req[0].pool + SOCAL_CQ_REQ0_SIZE;
	s->rsp[0].pool = s->req[1].pool + SOCAL_CQ_REQ1_SIZE;
	s->rsp[1].pool = s->rsp[0].pool + SOCAL_CQ_RSP0_SIZE;
	s->rsp[2].pool = s->rsp[1].pool + SOCAL_CQ_RSP1_SIZE;
	
	s->req[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET);
	s->req[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET + sizeof(socal_hw_cq));
	s->rsp[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET);
	s->rsp[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + sizeof(socal_hw_cq));
	s->rsp[2].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + 2 * sizeof(socal_hw_cq));
	
	cq[1].address = cq[0].address + (SOCAL_CQ_REQ0_SIZE * sizeof(socal_req));
	cq[4].address = cq[1].address + (SOCAL_CQ_REQ1_SIZE * sizeof(socal_req));
	cq[5].address = cq[4].address + (SOCAL_CQ_RSP0_SIZE * sizeof(socal_req));
	cq[6].address = cq[5].address + (SOCAL_CQ_RSP1_SIZE * sizeof(socal_req));

	cq[0].last = SOCAL_CQ_REQ0_SIZE - 1;
	cq[1].last = SOCAL_CQ_REQ1_SIZE - 1;
	cq[4].last = SOCAL_CQ_RSP0_SIZE - 1;
	cq[5].last = SOCAL_CQ_RSP1_SIZE - 1;
	cq[6].last = SOCAL_CQ_RSP2_SIZE - 1;
	for (i = 0; i < 8; i++)
		cq[i].seqno = 1;
	
	s->req[0].last = SOCAL_CQ_REQ0_SIZE - 1;
	s->req[1].last = SOCAL_CQ_REQ1_SIZE - 1;
	s->rsp[0].last = SOCAL_CQ_RSP0_SIZE - 1;
	s->rsp[1].last = SOCAL_CQ_RSP1_SIZE - 1;
	s->rsp[2].last = SOCAL_CQ_RSP2_SIZE - 1;
	
	s->req[0].seqno = 1;
	s->req[1].seqno = 1;
	s->rsp[0].seqno = 1;
	s->rsp[1].seqno = 1;
	s->rsp[2].seqno = 1;
	
	socal_copy_to_xram(s->xram + SOCAL_CQ_REQ_OFFSET, cq, sizeof(cq));
	
	SOD(("Setting up params\n"))
	
	/* Make our sw copy of SOCAL service parameters */
	socal_copy_from_xram(s->serv_params, s->xram + 0x280, sizeof (s->serv_params));
	
	s->port[0].fc.common_svc = (common_svc_parm *)s->serv_params;
	s->port[0].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
	s->port[1].fc.common_svc = (common_svc_parm *)&s->serv_params;
	s->port[1].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
	
	socal_enable (s);
	
	SOD(("Enabled SOCAL\n"))
}

static int __init socal_probe(void)
{
	struct sbus_bus *sbus;
	struct sbus_dev *sdev = 0;
	struct socal *s;
	int cards = 0;

	for_each_sbus(sbus) {
		for_each_sbusdev(sdev, sbus) {
			if(!strcmp(sdev->prom_name, "SUNW,socal")) {
				socal_init(sdev, cards);
				cards++;
			}
		}
	}
	if (!cards)
		return -EIO;

	for_each_socal(s)
		if (s->next)
			s->port[1].fc.next = &s->next->port[0].fc;
			
	fcp_init (&socals->port[0].fc);
	return 0;
}

static void __exit socal_cleanup(void)
{
	struct socal *s;
	int irq;
	struct sbus_dev *sdev;
	
	for_each_socal(s) {
		irq = s->port[0].fc.irq;
		disable_irq (irq);
		free_irq (irq, s);

		fcp_release(&(s->port[0].fc), 2);

		sdev = s->port[0].fc.dev;
		if (sdev->num_registers == 1) {
			sbus_iounmap(s->eeprom, sdev->reg_addrs[0].reg_size);
		} else {
			sbus_iounmap(s->xram, sdev->reg_addrs[1].reg_size);
			sbus_iounmap(s->regs, sdev->reg_addrs[2].reg_size);
		}
		sbus_free_consistent(sdev,
				     (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE +
				      SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE +
				      SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req),
				     s->req_cpu, s->req_dvma);
	}
}

EXPORT_NO_SYMBOLS;

module_init(socal_probe);
module_exit(socal_cleanup);
MODULE_LICENSE("GPL");