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freebsd-skq/sys/alpha/tc/tcds.c
mdodd 87e31f4b90 Remove the 'ivars' arguement to device_add_child() and 
device_add_child_ordered().  'ivars' may now be set using the
device_set_ivars() function.

This makes it easier for us to change how arbitrary data structures are
associated with a device_t.  Eventually we won't be modifying device_t
to add additional pointers for ivars, softc data etc.

Despite my best efforts I've probably forgotten something so let me know
if this breaks anything.  I've been running with this change for months
and its been quite involved actually isolating all the changes from
the rest of the local changes in my tree.

Reviewed by:	peter, dfr
1999-12-03 08:41:24 +00:00

455 lines
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/* $FreeBSD$ */
/* from $NetBSD: tcds.c,v 1.25 1998/05/26 23:43:05 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Keith Bostic, Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include "opt_cpu.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/pmap.h>
#include <machine/rpb.h>
#include <machine/clock.h>
#include <alpha/tc/tcreg.h>
#include <alpha/tc/tcvar.h>
#include <alpha/tc/tcdevs.h>
#include <alpha/tc/tcdsreg.h>
#include <alpha/tc/tcdsvar.h>
#define KV(pa) ALPHA_PHYS_TO_K0SEG(pa)
static devclass_t tcds_devclass;
static device_t tcds0; /* there can be only one */
struct tcds_softc {
device_t sc_dv;
vm_offset_t sc_base;
void *sc_cookie;
volatile u_int32_t *sc_cir;
volatile u_int32_t *sc_imer;
struct tcds_slotconfig sc_slots[2];
};
#define TCDS_SOFTC(dev) (struct tcds_softc*) device_get_softc(dev)
static int tcds_probe(device_t dev);
static int tcds_attach(device_t dev);
static void tcds_intrnull __P((void *));
static void tcds_lance_dma_setup(void *v);
static int tcds_intr __P((void *));
static device_method_t tcds_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, tcds_probe),
DEVMETHOD(device_attach, tcds_attach),
DEVMETHOD(bus_print_child, bus_generic_print_child),
{ 0, 0 }
};
static driver_t tcds_driver = {
"tcds",
tcds_methods,
sizeof(struct tcds_softc),
};
extern device_t tc0;
static int
tcds_probe(device_t dev)
{
if((hwrpb->rpb_type != ST_DEC_3000_300) &&
(hwrpb->rpb_type != ST_DEC_3000_500))
return ENXIO;
if(strcmp(device_get_name(dev),"tcds")){
return ENXIO;
}
tcds0 = dev;
device_set_desc(dev, "Turbochannel Dual Scsi");
return 0;
}
struct tcdsdev_attach_args tcdsdev;
static int
tcds_attach(device_t dev)
{
struct tcds_softc* sc = TCDS_SOFTC(dev);
struct tc_attach_args *ta = device_get_ivars(dev);
device_t parent = device_get_parent(dev);
device_t child;
vm_offset_t regs,va;
u_long i;
struct tcds_slotconfig *slotc;
struct tcdsdev_attach_args *tcdsdev;
tcds0 = dev;
/*
XXXXXX
*/
sc->sc_base = ta->ta_addr;
sc->sc_cookie = ta->ta_cookie;
sc->sc_cir = TCDS_REG(sc->sc_base, TCDS_CIR);
sc->sc_imer = TCDS_REG(sc->sc_base, TCDS_IMER);
tc_intr_establish(device_get_parent(dev), sc->sc_cookie, 0, tcds_intr, sc);
/*
* XXX
* IMER apparently has some random (or, not so random, but still
* not useful) bits set in it when the system boots. Clear it.
*/
*sc->sc_imer = 0;
alpha_wmb();
/* fill in common information first */
for (i = 0; i < 2; i++) {
slotc = &sc->sc_slots[i];
bzero(slotc, sizeof *slotc); /* clear everything */
slotc->sc_slot = i;
slotc->sc_tcds = sc;
slotc->sc_esp = NULL;
slotc->sc_intrhand = tcds_intrnull;
slotc->sc_intrarg = (void *)(long)i;
}
/* information for slot 0 */
slotc = &sc->sc_slots[0];
slotc->sc_resetbits = TCDS_CIR_SCSI0_RESET;
slotc->sc_intrmaskbits =
TCDS_IMER_SCSI0_MASK | TCDS_IMER_SCSI0_ENB;
slotc->sc_intrbits = TCDS_CIR_SCSI0_INT;
slotc->sc_dmabits = TCDS_CIR_SCSI0_DMAENA;
slotc->sc_errorbits = 0; /* XXX */
slotc->sc_sda = TCDS_REG(sc->sc_base, TCDS_SCSI0_DMA_ADDR);
slotc->sc_dic = TCDS_REG(sc->sc_base, TCDS_SCSI0_DMA_INTR);
slotc->sc_dud0 = TCDS_REG(sc->sc_base, TCDS_SCSI0_DMA_DUD0);
slotc->sc_dud1 = TCDS_REG(sc->sc_base, TCDS_SCSI0_DMA_DUD1);
/* information for slot 1 */
slotc = &sc->sc_slots[1];
slotc->sc_resetbits = TCDS_CIR_SCSI1_RESET;
slotc->sc_intrmaskbits =
TCDS_IMER_SCSI1_MASK | TCDS_IMER_SCSI1_ENB;
slotc->sc_intrbits = TCDS_CIR_SCSI1_INT;
slotc->sc_dmabits = TCDS_CIR_SCSI1_DMAENA;
slotc->sc_errorbits = 0; /* XXX */
slotc->sc_sda = TCDS_REG(sc->sc_base, TCDS_SCSI1_DMA_ADDR);
slotc->sc_dic = TCDS_REG(sc->sc_base, TCDS_SCSI1_DMA_INTR);
slotc->sc_dud0 = TCDS_REG(sc->sc_base, TCDS_SCSI1_DMA_DUD0);
slotc->sc_dud1 = TCDS_REG(sc->sc_base, TCDS_SCSI1_DMA_DUD1);
/* find the hardware attached to the TCDS ASIC */
tcdsdev = malloc(sizeof(struct tcdsdev_attach_args),
M_DEVBUF, M_NOWAIT);
if (tcdsdev) {
strncpy(tcdsdev->tcdsda_modname, "PMAZ-AA ", TC_ROM_LLEN);
tcdsdev->tcdsda_slot = 0;
tcdsdev->tcdsda_offset = 0;
tcdsdev->tcdsda_addr = (tc_addr_t)
TC_DENSE_TO_SPARSE(sc->sc_base + TCDS_SCSI0_OFFSET);
tcdsdev->tcdsda_cookie = (void *)(long)0;
tcdsdev->tcdsda_sc = &sc->sc_slots[0];
tcdsdev->tcdsda_id = 7; /* XXX */
tcdsdev->tcdsda_freq = 25000000; /* XXX */
tcds_scsi_reset(tcdsdev->tcdsda_sc);
child = device_add_child(dev, "esp", -1);
device_set_ivars(child, tcdsdev);
device_probe_and_attach(child);
}
/* the second SCSI chip isn't present on the 3000/300 series. */
if (hwrpb->rpb_type != ST_DEC_3000_300) {
tcdsdev = malloc(sizeof(struct tcdsdev_attach_args),
M_DEVBUF, M_NOWAIT);
if (tcdsdev) {
strncpy(tcdsdev->tcdsda_modname, "PMAZ-AA ",
TC_ROM_LLEN);
tcdsdev->tcdsda_slot = 1;
tcdsdev->tcdsda_offset = 0;
tcdsdev->tcdsda_addr = (tc_addr_t)
TC_DENSE_TO_SPARSE(sc->sc_base + TCDS_SCSI1_OFFSET);
tcdsdev->tcdsda_cookie = (void *)(long)1;
tcdsdev->tcdsda_sc = &sc->sc_slots[1];
tcdsdev->tcdsda_id = 7; /* XXX */
tcdsdev->tcdsda_freq = 25000000; /* XXX */
tcds_scsi_reset(tcdsdev->tcdsda_sc);
child = device_add_child(dev, "esp", -1);
device_set_ivars(child, tcdsdev);
device_probe_and_attach(child);
}
}
return 0;
}
void
tcds_scsi_reset(sc)
struct tcds_slotconfig *sc;
{
tcds_dma_enable(sc, 0);
tcds_scsi_enable(sc, 0);
TCDS_CIR_CLR(*sc->sc_tcds->sc_cir, sc->sc_resetbits);
alpha_mb();
DELAY(1);
TCDS_CIR_SET(*sc->sc_tcds->sc_cir, sc->sc_resetbits);
alpha_mb();
tcds_scsi_enable(sc, 1);
tcds_dma_enable(sc, 1);
}
void
tcds_scsi_enable(sc, on)
struct tcds_slotconfig *sc;
int on;
{
if (on)
*sc->sc_tcds->sc_imer |= sc->sc_intrmaskbits;
else
*sc->sc_tcds->sc_imer &= ~sc->sc_intrmaskbits;
alpha_mb();
}
void
tcds_dma_enable(sc, on)
struct tcds_slotconfig *sc;
int on;
{
/* XXX Clear/set IOSLOT/PBS bits. */
if (on)
TCDS_CIR_SET(*sc->sc_tcds->sc_cir, sc->sc_dmabits);
else
TCDS_CIR_CLR(*sc->sc_tcds->sc_cir, sc->sc_dmabits);
alpha_mb();
}
int
tcds_scsi_isintr(sc, clear)
struct tcds_slotconfig *sc;
int clear;
{
if ((*sc->sc_tcds->sc_cir & sc->sc_intrbits) != 0) {
if (clear) {
TCDS_CIR_CLR(*sc->sc_tcds->sc_cir, sc->sc_intrbits);
alpha_mb();
}
return (1);
} else
return (0);
}
int
tcds_scsi_iserr(sc)
struct tcds_slotconfig *sc;
{
return ((*sc->sc_tcds->sc_cir & sc->sc_errorbits) != 0);
}
static void
tcds_intrnull(void *val)
{
panic("tcds_intrnull: uncaught IOASIC intr for cookie %ld\n",
(u_long)val);
}
void
tcds_intr_establish(tcds, cookie, level, func, arg)
device_t tcds;
void *cookie, *arg;
tc_intrlevel_t level;
int (*func) __P((void *));
{
struct tcds_softc *sc = device_get_softc(tcds);
u_long slot;
slot = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX check cookie. */
#endif
if (sc->sc_slots[slot].sc_intrhand != tcds_intrnull){
panic("tcds_intr_establish: cookie %d twice, intrhdlr = 0x%lx",
slot,sc->sc_slots[slot].sc_intrhand );
}
sc->sc_slots[slot].sc_intrhand = func;
sc->sc_slots[slot].sc_intrarg = arg;
tcds_scsi_reset(&sc->sc_slots[slot]);
}
void
tcds_intr_disestablish(tcds, cookie)
device_t tcds;
void *cookie;
{
struct tcds_softc *sc = device_get_softc(tcds);
u_long slot;
slot = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX check cookie. */
#endif
if (sc->sc_slots[slot].sc_intrhand == tcds_intrnull)
panic("tcds_intr_disestablish: cookie %d missing intr",
slot);
sc->sc_slots[slot].sc_intrhand = tcds_intrnull;
sc->sc_slots[slot].sc_intrarg = (void *)slot;
tcds_dma_enable(&sc->sc_slots[slot], 0);
tcds_scsi_enable(&sc->sc_slots[slot], 0);
}
static int
tcds_intr(val)
void *val;
{
struct tcds_softc *sc;
u_int32_t ir;
sc = val;
/*
* XXX
* Copy and clear (gag!) the interrupts.
*/
ir = *sc->sc_cir;
alpha_mb();
TCDS_CIR_CLR(*sc->sc_cir, TCDS_CIR_ALLINTR);
alpha_mb();
tc_syncbus();
alpha_mb();
#define CHECKINTR(slot) \
if (ir & sc->sc_slots[slot].sc_intrbits) { \
(void)(*sc->sc_slots[slot].sc_intrhand) \
(sc->sc_slots[slot].sc_intrarg); \
}
CHECKINTR(0);
CHECKINTR(1);
#undef CHECKINTR
#ifdef DIAGNOSTIC
/*
* Interrupts not currently handled, but would like to know if they
* occur.
*
* XXX
* Don't know if we have to set the interrupt mask and enable bits
* in the IMER to allow some of them to happen?
*/
#define PRINTINTR(msg, bits) \
if (ir & bits) \
printf(msg);
PRINTINTR("SCSI0 DREQ interrupt.\n", TCDS_CIR_SCSI0_DREQ);
PRINTINTR("SCSI1 DREQ interrupt.\n", TCDS_CIR_SCSI1_DREQ);
PRINTINTR("SCSI0 prefetch interrupt.\n", TCDS_CIR_SCSI0_PREFETCH);
PRINTINTR("SCSI1 prefetch interrupt.\n", TCDS_CIR_SCSI1_PREFETCH);
PRINTINTR("SCSI0 DMA error.\n", TCDS_CIR_SCSI0_DMA);
PRINTINTR("SCSI1 DMA error.\n", TCDS_CIR_SCSI1_DMA);
PRINTINTR("SCSI0 DB parity error.\n", TCDS_CIR_SCSI0_DB);
PRINTINTR("SCSI1 DB parity error.\n", TCDS_CIR_SCSI1_DB);
PRINTINTR("SCSI0 DMA buffer parity error.\n", TCDS_CIR_SCSI0_DMAB_PAR);
PRINTINTR("SCSI1 DMA buffer parity error.\n", TCDS_CIR_SCSI1_DMAB_PAR);
PRINTINTR("SCSI0 DMA read parity error.\n", TCDS_CIR_SCSI0_DMAR_PAR);
PRINTINTR("SCSI1 DMA read parity error.\n", TCDS_CIR_SCSI1_DMAR_PAR);
PRINTINTR("TC write parity error.\n", TCDS_CIR_TCIOW_PAR);
PRINTINTR("TC I/O address parity error.\n", TCDS_CIR_TCIOA_PAR);
#undef PRINTINTR
#endif
/*
* XXX
* The MACH source had this, with the comment:
* This is wrong, but machine keeps dying.
*/
DELAY(1);
return 1;
}
DRIVER_MODULE(tcds, tc, tcds_driver, tcds_devclass, 0, 0);
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