331 lines
8.7 KiB
C
331 lines
8.7 KiB
C
/* $NetBSD: isp_sbus.c,v 1.2 1998/08/13 02:10:42 eeh Exp $ */
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/*
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* SBus specific probe and attach routines for Qlogic ISP SCSI adapters.
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*
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* Copyright (c) 1997 by Matthew Jacob
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* NASA AMES Research Center
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/queue.h>
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#include <sys/device.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#include <machine/autoconf.h>
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#include <sparc64/cpu.h>
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#include <sparc64/sparc/cpuvar.h>
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#include <sparc64/dev/sbusvar.h>
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#include <dev/ic/ispreg.h>
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#include <dev/ic/ispvar.h>
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#include <dev/microcode/isp/asm_sbus.h>
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#include <machine/param.h>
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#include <machine/vmparam.h>
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static u_int16_t isp_sbus_rd_reg __P((struct ispsoftc *, int));
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static void isp_sbus_wr_reg __P((struct ispsoftc *, int, u_int16_t));
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static int isp_sbus_mbxdma __P((struct ispsoftc *));
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static int isp_sbus_dmasetup __P((struct ispsoftc *, struct scsi_xfer *,
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ispreq_t *, u_int8_t *, u_int8_t));
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static void isp_sbus_dmateardown __P((struct ispsoftc *, struct scsi_xfer *,
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u_int32_t));
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static struct ispmdvec mdvec = {
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isp_sbus_rd_reg,
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isp_sbus_wr_reg,
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isp_sbus_mbxdma,
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isp_sbus_dmasetup,
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isp_sbus_dmateardown,
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NULL,
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NULL,
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ISP_RISC_CODE,
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ISP_CODE_LENGTH,
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ISP_CODE_ORG,
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0
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};
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struct isp_sbussoftc {
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struct ispsoftc sbus_isp;
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struct intrhand sbus_ih;
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volatile u_char *sbus_reg;
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int sbus_node;
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int sbus_pri;
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vaddr_t sbus_kdma_allocs[RQUEST_QUEUE_LEN];
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};
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static int isp_match __P((struct device *, struct cfdata *, void *));
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static void isp_sbus_attach __P((struct device *, struct device *, void *));
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struct cfattach isp_sbus_ca = {
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sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach
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};
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static int
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isp_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct confargs *ca = aux;
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register struct romaux *ra = &ca->ca_ra;
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if (strcmp(cf->cf_driver->cd_name, ra->ra_name) &&
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strcmp("SUNW,isp", ra->ra_name) &&
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strcmp("QLGC,isp", ra->ra_name)) {
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return (0);
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}
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if (ca->ca_bustype == BUS_SBUS)
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return (1);
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ra->ra_len = NBPG;
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return (probeget(ra->ra_vaddr, 1) != -1);
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}
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static void
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isp_sbus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct confargs *ca = aux;
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self;
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if (ca->ca_ra.ra_nintr != 1) {
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printf(": expected 1 interrupt, got %d\n", ca->ca_ra.ra_nintr);
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return;
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}
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sbc->sbus_pri = ca->ca_ra.ra_intr[0].int_pri;
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printf(" pri %d\n", sbc->sbus_pri);
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if (ca->ca_ra.ra_vaddr) {
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sbc->sbus_reg = (volatile u_char *) ca->ca_ra.ra_vaddr;
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} else {
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sbc->sbus_reg = (volatile u_char *)
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mapiodev(ca->ca_ra.ra_reg, 0, ca->ca_ra.ra_len);
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}
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sbc->sbus_node = ca->ca_ra.ra_node;
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sbc->sbus_isp.isp_mdvec = &mdvec;
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isp_reset(&sbc->sbus_isp);
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if (sbc->sbus_isp.isp_state != ISP_RESETSTATE) {
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return;
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}
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isp_init(&sbc->sbus_isp);
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if (sbc->sbus_isp.isp_state != ISP_INITSTATE) {
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isp_uninit(&sbc->sbus_isp);
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return;
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}
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sbc->sbus_ih.ih_fun = (void *) isp_intr;
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sbc->sbus_ih.ih_arg = sbc;
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intr_establish(sbc->sbus_pri, &sbc->sbus_ih);
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/*
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* Do Generic attach now.
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*/
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isp_attach(&sbc->sbus_isp);
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if (sbc->sbus_isp.isp_state != ISP_RUNSTATE) {
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isp_uninit(&sbc->sbus_isp);
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}
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}
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#define SBUS_BIU_REGS_OFF 0x00
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#define SBUS_MBOX_REGS_OFF 0x80
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#define SBUS_SXP_REGS_OFF 0x200
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#define SBUS_RISC_REGS_OFF 0x400
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static u_int16_t
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isp_sbus_rd_reg(isp, regoff)
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struct ispsoftc *isp;
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int regoff;
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{
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
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int offset;
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if ((regoff & BIU_BLOCK) != 0) {
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offset = SBUS_BIU_REGS_OFF;
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} else if ((regoff & MBOX_BLOCK) != 0) {
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offset = SBUS_MBOX_REGS_OFF;
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} else if ((regoff & SXP_BLOCK) != 0) {
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offset = SBUS_SXP_REGS_OFF;
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} else {
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offset = SBUS_RISC_REGS_OFF;
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}
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regoff &= 0xff;
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offset += regoff;
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return (*((u_int16_t *) &sbc->sbus_reg[offset]));
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}
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static void
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isp_sbus_wr_reg (isp, regoff, val)
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struct ispsoftc *isp;
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int regoff;
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u_int16_t val;
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{
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
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int offset;
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if ((regoff & BIU_BLOCK) != 0) {
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offset = SBUS_BIU_REGS_OFF;
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} else if ((regoff & MBOX_BLOCK) != 0) {
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offset = SBUS_MBOX_REGS_OFF;
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} else if ((regoff & SXP_BLOCK) != 0) {
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offset = SBUS_SXP_REGS_OFF;
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} else {
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offset = SBUS_RISC_REGS_OFF;
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}
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regoff &= 0xff;
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offset += regoff;
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*((u_int16_t *) &sbc->sbus_reg[offset]) = val;
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}
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static int
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isp_sbus_mbxdma(isp)
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struct ispsoftc *isp;
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{
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size_t len;
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/*
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* NOTE: Since most Sun machines aren't I/O coherent,
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* map the mailboxes through kdvma space to force them
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* to be uncached.
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*/
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/*
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* Allocate and map the request queue.
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*/
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len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
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isp->isp_rquest = (volatile caddr_t)malloc(len, M_DEVBUF, M_NOWAIT);
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if (isp->isp_rquest == 0)
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return (1);
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isp->isp_rquest_dma = (u_int32_t)kdvma_mapin((caddr_t)isp->isp_rquest,
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len, 0);
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if (isp->isp_rquest_dma == 0)
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return (1);
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/*
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* Allocate and map the result queue.
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*/
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len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
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isp->isp_result = (volatile caddr_t)malloc(len, M_DEVBUF, M_NOWAIT);
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if (isp->isp_result == 0)
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return (1);
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isp->isp_result_dma = (u_int32_t)kdvma_mapin((caddr_t)isp->isp_result,
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len, 0);
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if (isp->isp_result_dma == 0)
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return (1);
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return (0);
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}
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/*
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* TODO: If kdvma_mapin fails, try using multiple smaller chunks..
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*/
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static int
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isp_sbus_dmasetup(isp, xs, rq, iptrp, optr)
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struct ispsoftc *isp;
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struct scsi_xfer *xs;
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ispreq_t *rq;
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u_int8_t *iptrp;
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u_int8_t optr;
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{
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
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vaddr_t kdvma;
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int dosleep = (xs->flags & SCSI_NOSLEEP) != 0;
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if (xs->datalen == 0) {
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rq->req_seg_count = 1;
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rq->req_flags |= REQFLAG_DATA_IN;
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return (0);
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}
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if (rq->req_handle >= RQUEST_QUEUE_LEN) {
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panic("%s: bad handle (%d) in isp_sbus_dmasetup\n",
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isp->isp_name, rq->req_handle);
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/* NOTREACHED */
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}
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if (CPU_ISSUN4M) {
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kdvma = (vaddr_t)
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kdvma_mapin((caddr_t)xs->data, xs->datalen, dosleep);
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if (kdvma == (vaddr_t) 0) {
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return (1);
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}
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} else {
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kdvma = (vaddr_t) xs->data;
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}
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if (sbc->sbus_kdma_allocs[rq->req_handle] != (vaddr_t) 0) {
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panic("%s: kdma handle already allocated\n", isp->isp_name);
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/* NOTREACHED */
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}
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sbc->sbus_kdma_allocs[rq->req_handle] = kdvma;
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if (xs->flags & SCSI_DATA_IN) {
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rq->req_flags |= REQFLAG_DATA_IN;
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} else {
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rq->req_flags |= REQFLAG_DATA_OUT;
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}
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rq->req_dataseg[0].ds_count = xs->datalen;
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rq->req_dataseg[0].ds_base = (u_int32_t) kdvma;
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rq->req_seg_count = 1;
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return (0);
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}
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static void
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isp_sbus_dmateardown(isp, xs, handle)
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struct ispsoftc *isp;
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struct scsi_xfer *xs;
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u_int32_t handle;
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{
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
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vaddr_t kdvma;
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if (xs->flags & SCSI_DATA_IN) {
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cpuinfo.cache_flush(xs->data, xs->datalen - xs->resid);
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}
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if (handle >= RQUEST_QUEUE_LEN) {
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panic("%s: bad handle (%d) in isp_sbus_dmateardown\n",
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isp->isp_name, handle);
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/* NOTREACHED */
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}
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if (sbc->sbus_kdma_allocs[handle] == (vaddr_t) 0) {
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panic("%s: kdma handle not already allocated\n", isp->isp_name);
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/* NOTREACHED */
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}
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kdvma = sbc->sbus_kdma_allocs[handle];
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sbc->sbus_kdma_allocs[handle] = (vaddr_t) 0;
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if (CPU_ISSUN4M) {
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dvma_mapout(kdvma, (vaddr_t) xs->data, xs->datalen);
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}
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}
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