p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
linux_old1/drivers/fc4/socal.c

906 lines
25 KiB
C
Raw Blame History

/* 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 = kzalloc (sizeof (struct socal), GFP_KERNEL);
if (!s) return;
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");
Reference in New Issue View Git Blame Copy Permalink