1 files changed, 906 insertions, 0 deletions

diff --git a/drivers/fc4/socal.c b/drivers/fc4/socal.c
new file mode 100644
index 0000000..b2377db
--- /dev/null
+++ b/drivers/fc4/socal.c
@@ -0,0 +1,906 @@
+/* socal.c: Sparc SUNW,socal (SOC+) Fibre Channel Sbus adapter support.
+ *
+ * Copyright (C) 1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
+ *
+ * Sources:
+ *	Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994
+ *	dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995
+ *	SOC+ Programming Guide 0.1
+ *	Fibre Channel Arbitrated Loop (FC-AL), dpANS rev. 4.5, 1995
+ *
+ * Supported hardware:
+ *      On-board SOC+ adapters of Ultra Enterprise servers and sun4d.
+ */
+
+static char *version =
+        "socal.c: SOC+ driver v1.1 9/Feb/99 Jakub Jelinek (jj@ultra.linux.cz)\n";
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <linux/errno.h>
+#include <asm/byteorder.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+
+/* #define SOCALDEBUG */
+/* #define HAVE_SOCAL_UCODE */
+/* #define USE_64BIT_MODE */
+
+#include "fcp_impl.h"
+#include "socal.h"
+#ifdef HAVE_SOCAL_UCODE
+#include "socal_asm.h"
+#endif
+
+#define socal_printk printk ("socal%d: ", s->socal_no); printk 
+
+#ifdef SOCALDEBUG
+#define SOD(x)  socal_printk x;
+#else
+#define SOD(x)
+#endif
+
+#define for_each_socal(s) for (s = socals; s; s = s->next)
+struct socal *socals = NULL;
+
+static void socal_copy_from_xram(void *d, void __iomem *xram, long size)
+{
+	u32 *dp = (u32 *) d;
+	while (size) {
+		*dp++ = sbus_readl(xram);
+		xram += sizeof(u32);
+		size -= sizeof(u32);
+	}
+}
+
+static void socal_copy_to_xram(void __iomem *xram, void *s, long size)
+{
+	u32 *sp = (u32 *) s;
+	while (size) {
+		u32 val = *sp++;
+		sbus_writel(val, xram);
+		xram += sizeof(u32);
+		size -= sizeof(u32);
+	}
+}
+
+#ifdef HAVE_SOCAL_UCODE
+static void socal_bzero(unsigned long xram, int size)
+{
+	while (size) {
+		sbus_writel(0, xram);
+		xram += sizeof(u32);
+		size -= sizeof(u32);
+	}
+}
+#endif
+
+static inline void socal_disable(struct socal *s)
+{
+	sbus_writel(0, s->regs + IMASK);
+	sbus_writel(SOCAL_CMD_SOFT_RESET, s->regs + CMD);
+}
+
+static inline void socal_enable(struct socal *s)
+{
+	SOD(("enable %08x\n", s->cfg))
+	sbus_writel(0, s->regs + SAE);
+	sbus_writel(s->cfg, s->regs + CFG);
+	sbus_writel(SOCAL_CMD_RSP_QALL, s->regs + CMD);
+	SOCAL_SETIMASK(s, SOCAL_IMASK_RSP_QALL | SOCAL_IMASK_SAE);
+	SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
+}
+
+static void socal_reset(fc_channel *fc)
+{
+	socal_port *port = (socal_port *)fc;
+	struct socal *s = port->s;
+	
+	/* FIXME */
+	socal_disable(s);
+	s->req[0].seqno = 1;
+	s->req[1].seqno = 1;
+	s->rsp[0].seqno = 1;
+	s->rsp[1].seqno = 1;
+	s->req[0].in = 0;
+	s->req[1].in = 0;
+	s->rsp[0].in = 0;
+	s->rsp[1].in = 0;
+	s->req[0].out = 0;
+	s->req[1].out = 0;
+	s->rsp[0].out = 0;
+	s->rsp[1].out = 0;
+
+	/* FIXME */
+	socal_enable(s);
+}
+
+static inline void socal_solicited(struct socal *s, unsigned long qno)
+{
+	socal_rsp *hwrsp;
+	socal_cq *sw_cq;
+	int token;
+	int status;
+	fc_channel *fc;
+
+	sw_cq = &s->rsp[qno];
+
+	/* Finally an improvement against old SOC :) */
+	sw_cq->in = sbus_readb(s->regs + RESP + qno);
+	SOD (("socal_solicited, %d packets arrived\n",
+	      (sw_cq->in - sw_cq->out) & sw_cq->last))
+	for (;;) {
+		hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
+		SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
+		
+#if defined(SOCALDEBUG) && 0
+		{
+		u32 *u = (u32 *)hwrsp;
+		SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
+		     u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
+		u += 8;
+		SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
+		     u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
+		u = (u32 *)s->xram;
+		while (u < ((u32 *)s->regs)) {
+			if (sbus_readl(&u[0]) == 0x00003000 ||
+			    sbus_readl(&u[0]) == 0x00003801) {
+			SOD(("Found at %04lx\n",
+			     (unsigned long)u - (unsigned long)s->xram))
+			SOD(("  %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
+			     sbus_readl(&u[0]), sbus_readl(&u[1]),
+			     sbus_readl(&u[2]), sbus_readl(&u[3]),
+			     sbus_readl(&u[4]), sbus_readl(&u[5]),
+			     sbus_readl(&u[6]), sbus_readl(&u[7])))
+			u += 8;
+			SOD(("  %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
+			     sbus_readl(&u[0]), sbus_readl(&u[1]),
+			     sbus_readl(&u[2]), sbus_readl(&u[3]),
+			     sbus_readl(&u[4]), sbus_readl(&u[5]),
+			     sbus_readl(&u[6]), sbus_readl(&u[7])))
+			u -= 8;
+			}
+			u++;
+		}
+		}
+#endif
+
+		token = hwrsp->shdr.token;
+		status = hwrsp->status;
+		fc = (fc_channel *)(&s->port[(token >> 11) & 1]);
+		
+		SOD(("Solicited token %08x status %08x\n", token, status))
+		if (status == SOCAL_OK) {
+			fcp_receive_solicited(fc, token >> 12,
+					      token & ((1 << 11) - 1),
+					      FC_STATUS_OK, NULL);
+		} else {
+			/* We have intentionally defined FC_STATUS_* constants
+			 * to match SOCAL_* constants, otherwise we'd have to
+			 * translate status.
+			 */
+			fcp_receive_solicited(fc, token >> 12,
+					      token & ((1 << 11) - 1), status, &hwrsp->fchdr);
+		}
+			
+		if (++sw_cq->out > sw_cq->last) {
+			sw_cq->seqno++;
+			sw_cq->out = 0;
+		}
+		
+		if (sw_cq->out == sw_cq->in) {
+			sw_cq->in = sbus_readb(s->regs + RESP + qno);
+			if (sw_cq->out == sw_cq->in) {
+				/* Tell the hardware about it */
+				sbus_writel((sw_cq->out << 24) |
+					    (SOCAL_CMD_RSP_QALL &
+					     ~(SOCAL_CMD_RSP_Q0 << qno)),
+					    s->regs + CMD);
+
+				/* Read it, so that we're sure it has been updated */
+				sbus_readl(s->regs + CMD);
+				sw_cq->in = sbus_readb(s->regs + RESP + qno);
+				if (sw_cq->out == sw_cq->in)
+					break;
+			}
+		}
+	}
+}
+
+static inline void socal_request (struct socal *s, u32 cmd)
+{
+	SOCAL_SETIMASK(s, s->imask & ~(cmd & SOCAL_CMD_REQ_QALL));
+	SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
+
+	SOD(("Queues available %08x OUT %X\n", cmd, s->regs->reqpr[0]))
+	if (s->port[s->curr_port].fc.state != FC_STATE_OFFLINE) {
+		fcp_queue_empty ((fc_channel *)&(s->port[s->curr_port]));
+		if (((s->req[1].in + 1) & s->req[1].last) != (s->req[1].out))
+			fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
+	} else {
+		fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
+	}
+	if (s->port[1 - s->curr_port].fc.state != FC_STATE_OFFLINE)
+		s->curr_port ^= 1;
+}
+
+static inline void socal_unsolicited (struct socal *s, unsigned long qno)
+{
+	socal_rsp *hwrsp, *hwrspc;
+	socal_cq *sw_cq;
+	int count;
+	int status;
+	int flags;
+	fc_channel *fc;
+
+	sw_cq = &s->rsp[qno];
+
+	sw_cq->in = sbus_readb(s->regs + RESP + qno);
+	SOD (("socal_unsolicited, %d packets arrived, in %d\n",
+	      (sw_cq->in - sw_cq->out) & sw_cq->last, sw_cq->in))
+	while (sw_cq->in != sw_cq->out) {
+		/* ...real work per entry here... */
+		hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
+		SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
+
+#if defined(SOCALDEBUG) && 0
+		{
+		u32 *u = (u32 *)hwrsp;
+		SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
+		     u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
+		u += 8;
+		SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
+		     u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
+		}
+#endif
+
+		hwrspc = NULL;
+		flags = hwrsp->shdr.flags;
+		count = hwrsp->count;
+		fc = (fc_channel *)&s->port[flags & SOCAL_PORT_B];
+		SOD(("FC %08lx\n", (long)fc))
+		
+		if (count != 1) {
+			/* Ugh, continuation entries */
+			u8 in;
+
+			if (count != 2) {
+				printk("%s: Too many continuations entries %d\n",
+				       fc->name, count);
+				goto update_out;
+			}
+			
+			in = sw_cq->in;
+			if (in < sw_cq->out)
+				in += sw_cq->last + 1;
+			if (in < sw_cq->out + 2) {
+				/* Ask the hardware if they haven't arrived yet. */
+				sbus_writel((sw_cq->out << 24) |
+					    (SOCAL_CMD_RSP_QALL &
+					     ~(SOCAL_CMD_RSP_Q0 << qno)),
+					    s->regs + CMD);
+
+				/* Read it, so that we're sure it has been updated */
+				sbus_readl(s->regs + CMD);
+				sw_cq->in = sbus_readb(s->regs + RESP + qno);
+				in = sw_cq->in;
+				if (in < sw_cq->out)
+					in += sw_cq->last + 1;
+				if (in < sw_cq->out + 2) /* Nothing came, let us wait */
+					return;
+			}
+			if (sw_cq->out == sw_cq->last)
+				hwrspc = (socal_rsp *)sw_cq->pool;
+			else
+				hwrspc = hwrsp + 1;
+		}
+		
+		switch (flags & ~SOCAL_PORT_B) {
+		case SOCAL_STATUS:
+			status = hwrsp->status;
+			switch (status) {
+			case SOCAL_ONLINE:
+				SOD(("State change to ONLINE\n"));
+				fcp_state_change(fc, FC_STATE_ONLINE);
+				break;
+			case SOCAL_ONLINE_LOOP:
+				SOD(("State change to ONLINE_LOOP\n"));
+				fcp_state_change(fc, FC_STATE_ONLINE);
+				break;
+			case SOCAL_OFFLINE:
+				SOD(("State change to OFFLINE\n"));
+				fcp_state_change(fc, FC_STATE_OFFLINE);
+				break;
+			default:
+				printk ("%s: Unknown STATUS no %d\n",
+					fc->name, status);
+				break;
+			};
+
+			break;
+		case (SOCAL_UNSOLICITED|SOCAL_FC_HDR):
+			{
+				int r_ctl = *((u8 *)&hwrsp->fchdr);
+				unsigned len;
+				
+				if ((r_ctl & 0xf0) == R_CTL_EXTENDED_SVC) {
+					len = hwrsp->shdr.bytecnt;
+					if (len < 4 || !hwrspc) {
+						printk ("%s: Invalid R_CTL %02x "
+							"continuation entries\n",
+							fc->name, r_ctl);
+					} else {
+						if (len > 60)
+							len = 60;
+						if (*(u32 *)hwrspc == LS_DISPLAY) {
+							int i;
+							
+							for (i = 4; i < len; i++)
+								if (((u8 *)hwrspc)[i] == '\n')
+									((u8 *)hwrspc)[i] = ' ';
+							((u8 *)hwrspc)[len] = 0;
+							printk ("%s message: %s\n",
+								fc->name, ((u8 *)hwrspc) + 4);
+						} else {
+							printk ("%s: Unknown LS_CMD "
+								"%08x\n", fc->name,
+								*(u32 *)hwrspc);
+						}
+					}
+				} else {
+					printk ("%s: Unsolicited R_CTL %02x "
+						"not handled\n", fc->name, r_ctl);
+				}
+			}
+			break;
+		default:
+			printk ("%s: Unexpected flags %08x\n", fc->name, flags);
+			break;
+		};
+update_out:
+		if (++sw_cq->out > sw_cq->last) {
+			sw_cq->seqno++;
+			sw_cq->out = 0;
+		}
+		
+		if (hwrspc) {
+			if (++sw_cq->out > sw_cq->last) {
+				sw_cq->seqno++;
+				sw_cq->out = 0;
+			}
+		}
+		
+		if (sw_cq->out == sw_cq->in) {
+			sw_cq->in = sbus_readb(s->regs + RESP + qno);
+			if (sw_cq->out == sw_cq->in) {
+				/* Tell the hardware about it */
+				sbus_writel((sw_cq->out << 24) |
+					    (SOCAL_CMD_RSP_QALL &
+					     ~(SOCAL_CMD_RSP_Q0 << qno)),
+					    s->regs + CMD);
+
+				/* Read it, so that we're sure it has been updated */
+				sbus_readl(s->regs + CMD);
+				sw_cq->in = sbus_readb(s->regs + RESP + qno);
+			}
+		}
+	}
+}
+
+static irqreturn_t socal_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+	u32 cmd;
+	unsigned long flags;
+	register struct socal *s = (struct socal *)dev_id;
+
+	spin_lock_irqsave(&s->lock, flags);
+	cmd = sbus_readl(s->regs + CMD);
+	for (; (cmd = SOCAL_INTR (s, cmd)); cmd = sbus_readl(s->regs + CMD)) {
+#ifdef SOCALDEBUG
+		static int cnt = 0;
+		if (cnt++ < 50)
+			printk("soc_intr %08x\n", cmd);
+#endif	
+		if (cmd & SOCAL_CMD_RSP_Q2)
+			socal_unsolicited (s, SOCAL_UNSOLICITED_RSP_Q);
+		if (cmd & SOCAL_CMD_RSP_Q1)
+			socal_unsolicited (s, SOCAL_SOLICITED_BAD_RSP_Q);
+		if (cmd & SOCAL_CMD_RSP_Q0)
+			socal_solicited (s, SOCAL_SOLICITED_RSP_Q);
+		if (cmd & SOCAL_CMD_REQ_QALL)
+			socal_request (s, cmd);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+
+	return IRQ_HANDLED;
+}
+
+#define TOKEN(proto, port, token) (((proto)<<12)|(token)|(port))
+
+static int socal_hw_enque (fc_channel *fc, fcp_cmnd *fcmd)
+{
+	socal_port *port = (socal_port *)fc;
+	struct socal *s = port->s;
+	unsigned long qno;
+	socal_cq *sw_cq;
+	int cq_next_in;
+	socal_req *request;
+	fc_hdr *fch;
+	int i;
+
+	if (fcmd->proto == TYPE_SCSI_FCP)
+		qno = 1;
+	else
+		qno = 0;
+	SOD(("Putting a FCP packet type %d into hw queue %d\n", fcmd->proto, qno))
+	if (s->imask & (SOCAL_IMASK_REQ_Q0 << qno)) {
+		SOD(("EIO %08x\n", s->imask))
+		return -EIO;
+	}
+	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));
+	spin_lock_init(&s->lock);
+	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 __iomem *)(s->xram + SOCAL_CQ_REQ_OFFSET);
+	s->req[1].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_REQ_OFFSET + sizeof(socal_hw_cq));
+	s->rsp[0].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_RSP_OFFSET);
+	s->rsp[1].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_RSP_OFFSET + sizeof(socal_hw_cq));
+	s->rsp[2].hw_cq = (socal_hw_cq __iomem *)(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 = NULL;
+	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;
+		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);
+	}
+}
+
+module_init(socal_probe);
+module_exit(socal_cleanup);
+MODULE_LICENSE("GPL");