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NetBSD/sys/dev/ic/isp_inline.h

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/* $NetBSD: isp_inline.h,v 1.14 2001/07/06 16:16:11 mjacob Exp $ */
/*
* This driver, which is contained in NetBSD in the files:
*
* sys/dev/ic/isp.c
* sys/dev/ic/isp_inline.h
* sys/dev/ic/isp_netbsd.c
* sys/dev/ic/isp_netbsd.h
* sys/dev/ic/isp_target.c
* sys/dev/ic/isp_target.h
* sys/dev/ic/isp_tpublic.h
* sys/dev/ic/ispmbox.h
* sys/dev/ic/ispreg.h
* sys/dev/ic/ispvar.h
* sys/microcode/isp/asm_sbus.h
* sys/microcode/isp/asm_1040.h
* sys/microcode/isp/asm_1080.h
* sys/microcode/isp/asm_12160.h
* sys/microcode/isp/asm_2100.h
* sys/microcode/isp/asm_2200.h
* sys/pci/isp_pci.c
* sys/sbus/isp_sbus.c
*
* Is being actively maintained by Matthew Jacob (mjacob@netbsd.org).
* This driver also is shared source with FreeBSD, OpenBSD, Linux, Solaris,
* Linux versions. This tends to be an interesting maintenance problem.
*
* Please coordinate with Matthew Jacob on changes you wish to make here.
*/
/*
* Copyright (C) 1999 National Aeronautics & Space Administration
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Qlogic HBA inline functions.
* mjacob@nas.nasa.gov.
*/
#ifndef _ISP_INLINE_H
#define _ISP_INLINE_H
/*
* Handle Functions.
* For each outstanding command there will be a non-zero handle.
* There will be at most isp_maxcmds handles, and isp_lasthdls
* will be a seed for the last handled allocated.
*/
static INLINE int isp_save_xs(struct ispsoftc *, XS_T *, u_int16_t *);
static INLINE XS_T *isp_find_xs(struct ispsoftc *, u_int16_t);
static INLINE u_int16_t isp_find_handle(struct ispsoftc *, XS_T *);
static INLINE int isp_handle_index(u_int16_t);
static INLINE void isp_destroy_handle(struct ispsoftc *, u_int16_t);
static INLINE void isp_remove_handle(struct ispsoftc *, XS_T *);
static INLINE int
isp_save_xs(struct ispsoftc *isp, XS_T *xs, u_int16_t *handlep)
{
int i, j;
for (j = isp->isp_lasthdls, i = 0; i < (int) isp->isp_maxcmds; i++) {
if (isp->isp_xflist[j] == NULL) {
break;
}
if (++j == isp->isp_maxcmds) {
j = 0;
}
}
if (i == isp->isp_maxcmds) {
return (-1);
}
isp->isp_xflist[j] = xs;
*handlep = j+1;
if (++j == isp->isp_maxcmds)
j = 0;
isp->isp_lasthdls = (u_int16_t)j;
return (0);
}
static INLINE XS_T *
isp_find_xs(struct ispsoftc *isp, u_int16_t handle)
{
if (handle < 1 || handle > (u_int16_t) isp->isp_maxcmds) {
return (NULL);
} else {
return (isp->isp_xflist[handle - 1]);
}
}
static INLINE u_int16_t
isp_find_handle(struct ispsoftc *isp, XS_T *xs)
{
int i;
if (xs != NULL) {
for (i = 0; i < isp->isp_maxcmds; i++) {
if (isp->isp_xflist[i] == xs) {
return ((u_int16_t) i+1);
}
}
}
return (0);
}
static INLINE int
isp_handle_index(u_int16_t handle)
{
return (handle-1);
}
static INLINE void
isp_destroy_handle(struct ispsoftc *isp, u_int16_t handle)
{
if (handle > 0 && handle <= (u_int16_t) isp->isp_maxcmds) {
isp->isp_xflist[isp_handle_index(handle)] = NULL;
}
}
static INLINE void
isp_remove_handle(struct ispsoftc *isp, XS_T *xs)
{
isp_destroy_handle(isp, isp_find_handle(isp, xs));
}
static INLINE int
isp_getrqentry(struct ispsoftc *, u_int16_t *, u_int16_t *, void **);
static INLINE int
isp_getrqentry(struct ispsoftc *isp, u_int16_t *iptrp,
u_int16_t *optrp, void **resultp)
{
volatile u_int16_t iptr, optr;
optr = isp->isp_reqodx = READ_REQUEST_QUEUE_OUT_POINTER(isp);
iptr = isp->isp_reqidx;
*resultp = ISP_QUEUE_ENTRY(isp->isp_rquest, iptr);
iptr = ISP_NXT_QENTRY(iptr, RQUEST_QUEUE_LEN(isp));
if (iptr == optr) {
return (1);
}
if (optrp)
*optrp = optr;
if (iptrp)
*iptrp = iptr;
return (0);
}
static INLINE void isp_print_qentry (struct ispsoftc *, char *, int, void *);
#define TBA (4 * (((QENTRY_LEN >> 2) * 3) + 1) + 1)
static INLINE void
isp_print_qentry(struct ispsoftc *isp, char *msg, int idx, void *arg)
{
char buf[TBA];
int amt, i, j;
u_int8_t *ptr = arg;
isp_prt(isp, ISP_LOGALL, "%s index %d=>", msg, idx);
for (buf[0] = 0, amt = i = 0; i < 4; i++) {
buf[0] = 0;
SNPRINTF(buf, TBA, " ");
for (j = 0; j < (QENTRY_LEN >> 2); j++) {
SNPRINTF(buf, TBA, "%s %02x", buf, ptr[amt++] & 0xff);
}
isp_prt(isp, ISP_LOGALL, buf);
}
}
static INLINE void isp_print_bytes(struct ispsoftc *, char *, int, void *);
static INLINE void
isp_print_bytes(struct ispsoftc *isp, char *msg, int amt, void *arg)
{
char buf[128];
u_int8_t *ptr = arg;
int off;
if (msg)
isp_prt(isp, ISP_LOGALL, "%s:", msg);
off = 0;
buf[0] = 0;
while (off < amt) {
int j, to;
to = off;
for (j = 0; j < 16; j++) {
SNPRINTF(buf, 128, "%s %02x", buf, ptr[off++] & 0xff);
if (off == amt)
break;
}
isp_prt(isp, ISP_LOGALL, "0x%08x:%s", to, buf);
buf[0] = 0;
}
}
/*
* Do the common path to try and ensure that link is up, we've scanned
* the fabric (if we're on a fabric), and that we've synchronized this
* all with our own database and done the appropriate logins.
*
* We repeatedly check for firmware state and loop state after each
* action because things may have changed while we were doing this.
* Any failure or change of state causes us to return a nonzero value.
*
* We honor HBA roles in that if we're not in Initiator mode, we don't
* attempt to sync up the database (that's for somebody else to do,
* if ever).
*
* We assume we enter here with any locks held.
*/
static INLINE int isp_fc_runstate(struct ispsoftc *, int);
static INLINE int
isp_fc_runstate(struct ispsoftc *isp, int tval)
{
fcparam *fcp;
int *tptr;
if (IS_SCSI(isp))
return (0);
tptr = tval? &tval : NULL;
if (isp_control(isp, ISPCTL_FCLINK_TEST, tptr) != 0) {
return (-1);
}
fcp = FCPARAM(isp);
if (fcp->isp_fwstate != FW_READY || fcp->isp_loopstate < LOOP_PDB_RCVD)
return (-1);
if (isp_control(isp, ISPCTL_SCAN_FABRIC, NULL) != 0) {
return (-1);
}
if (isp_control(isp, ISPCTL_SCAN_LOOP, NULL) != 0) {
return (-1);
}
if ((isp->isp_role & ISP_ROLE_INITIATOR) == 0) {
return (0);
}
if (isp_control(isp, ISPCTL_PDB_SYNC, NULL) != 0) {
return (-1);
}
if (fcp->isp_fwstate != FW_READY || fcp->isp_loopstate != LOOP_READY) {
return (-1);
}
return (0);
}
#endif /* _ISP_INLINE_H */
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