aboutsummaryrefslogtreecommitdiff
path: root/drivers/fc4/socal.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/fc4/socal.c')
-rw-r--r--drivers/fc4/socal.c906
1 files changed, 906 insertions, 0 deletions
diff --git a/drivers/fc4/socal.c b/drivers/fc4/socal.c
new file mode 100644
index 000000000000..b2377dbd84a1
--- /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");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 12:26:46 +0000