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b21e4aed42
freebsd/sys/alpha/tc/tcds.c
Matthew N. Dodd 15317dd875 Alter the behavior of sys/kern/subr_bus.c:device_print_child() 
- device_print_child() either lets the BUS_PRINT_CHILD
	  method produce the entire device announcement message or
	  it prints "foo0: not found\n"

Alter sys/kern/subr_bus.c:bus_generic_print_child() to take on
the previous behavior of device_print_child() (printing the
"foo0: <FooDevice 1.1>" bit of the announce message.)

Provide bus_print_child_header() and bus_print_child_footer()
to actually print the output for bus_generic_print_child().
These functions should be used whenever possible (unless you can
just use bus_generic_print_child())

The BUS_PRINT_CHILD method now returns int instead of void.

Modify everything else that defines or uses a BUS_PRINT_CHILD
method to comply with the above changes.

	- Devices are 'on' a bus, not 'at' it.
	- If a custom BUS_PRINT_CHILD method does the same thing
	  as bus_generic_print_child(), use bus_generic_print_child()
	- Use device_get_nameunit() instead of both
	  device_get_name() and device_get_unit()
	- All BUS_PRINT_CHILD methods return the number of
	  characters output.

Reviewed by: dfr, peter
1999-07-29 01:03:04 +00:00

450 lines
14 KiB
C
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/* $Id: tcds.c,v 1.2 1999/05/08 21:58:50 dfr Exp $ */
/* 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);
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);
device_probe_and_attach(device_add_child(dev, "esp", -1, tcdsdev));
}
/* 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);
device_probe_and_attach(device_add_child(dev, "esp", -1, tcdsdev));
}
}
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)
struct device *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)
struct device *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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