NetBSD/sys/arch/pmax/tc/tc_subr.c

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/* $NetBSD: tc_subr.c,v 1.13 1997/06/22 07:42:46 jonathan Exp $ */
/*
* Copyright 1996 The Board of Trustees of The Leland Stanford
* Junior University. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. Stanford University
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#include <sys/param.h>
#include <sys/systm.h> /* printf() */
#include <sys/device.h>
#include <dev/cons.h>
#include <dev/tc/tcvar.h>
#include <machine/autoconf.h>
extern int pmax_boardtype;
/* Return the appropriate tcbus_attach_args for a given cputype */
extern struct tcbus_attach_args * cpu_tcdesc __P ((int cputype));
/* Definition of the driver for autoconfig. */
int tcmatch(struct device *, void *, void *);
void tcattach(struct device *, struct device *, void *);
int tcprint(void *, const char *);
void tc_ds_intr_establish __P((struct device *, void *, tc_intrlevel_t,
intr_handler_t handler, intr_arg_t arg));
void tc_intr_disestablish __P((struct device *dev, void *cookie));
caddr_t tc_cvtaddr __P((struct confargs *));
extern int cputype;
extern int tc_findconsole __P((int prom_slot));
/* Forward declarations */
static int tc_consprobeslot __P((tc_addr_t slotaddr));
/*
* TurboChannel autoconfiguration declarations and tables for DECstations.
*/
#include <pmax/pmax/pmaxtype.h>
#include <pmax/pmax/trap.h>
#include <pmax/pmax/asic.h>
#include <pmax/pmax/kn03.h>
#include <pmax/pmax/kn02.h>
#include <pmax/pmax/kmin.h>
#include <pmax/pmax/maxine.h>
#include <pmax/pmax/turbochannel.h>
#include <machine/fbio.h>
#include <machine/fbvar.h>
#include <pmax/dev/cfbvar.h>
#include <pmax/dev/mfbvar.h>
#include <pmax/dev/sfbvar.h>
#include <pmax/dev/xcfbvar.h>
/* Which TC framebuffers have drivers, for configuring a console device. */
#include "cfb.h"
#include "mfb.h"
#include "sfb.h"
/*#include <pmax/pmax/nameglue.h>*/
#define KV(x) ((tc_addr_t)MIPS_PHYS_TO_KSEG1(x))
void tc_ds_ioasic_intr_setup __P((void));
void tc_ds_ioasic_intr_establish __P((struct device *dev, void *cookie,
tc_intrlevel_t level,
intr_handler_t handler,
void *arg));
void tc_ds_ioasic_intr_disestablish __P((struct device *, void *));
void tc_ds_ioasic_iointr __P((void *, int));
int tc_ds_ioasic_getdev __P((struct confargs *));
/* XXX*/
/* should be handled elsewhere? */
typedef void (*tc_enable_t) __P ((u_int slotno, intr_handler_t,
void *intr_arg, int on));
typedef int (*tc_handler_t) __P((void *intr_arg));
extern void (*tc_enable_interrupt) __P ((u_int slotno, tc_handler_t,
void *intr_arg, int on));
extern void kn03_enable_intr __P((u_int slot, tc_handler_t,
void *intr_arg, int on));
extern void kn02_enable_intr __P ((u_int slot, tc_handler_t,
void *intr_arg, int on));
extern void kmin_enable_intr __P ((u_int slot, tc_handler_t,
void *intr_arg, int on));
extern void xine_enable_intr __P ((u_int slot, tc_handler_t,
void *intr_arg, int on));
/*
* Configuration tables for the four models of
* Decstation that have turbochannels.
* None of the four are the same.
*/
#define C(x) ((void *)(u_long)x)
#define TC_SCSI "PMAZ-AA "
#define TC_ETHER "PMAD-AA "
/*
* 3MIN and 3MAXPLUS turbochannel slots.
* The kmin (3MIN) and kn03 (3MAXPLUS) have the same number of slots.
* We can share one configuration-struct table and use two slot-address
* tables to handle the fact that the turbochannel slot size and base
* addresses are different on the two machines.
* (thankfully, the IOCTL ASIC subslots are all the same size on all
* DECstations with IOASICs.) The devices are listed in the order in which
* we should probe and attach them.
*/
/*
* The only builtin Turbochannel device on the kn03 and kmin
* is the IOCTL asic, which is mapped into TC slot 3.
*/
const struct tc_builtin tc_kn03_builtins[] = {
{ "IOCTL ", 3, 0x0, C(3), /*C(3)*/ }
};
/* 3MAXPLUS TC slot addresses */
static struct tc_slotdesc tc_kn03_slots [4] = {
{ KV(KN03_PHYS_TC_0_START), C(0) }, /* slot0 - tc option slot 0 */
{ KV(KN03_PHYS_TC_1_START), C(1) }, /* slot1 - tc option slot 1 */
{ KV(KN03_PHYS_TC_2_START), C(2) }, /* slot2 - tc option slot 2 */
{ KV(KN03_PHYS_TC_3_START), C(3) } /* slot3 - IO asic on b'board */
};
int tc_kn03_nslots =
sizeof(tc_kn03_slots) / sizeof(tc_kn03_slots[0]);
/* 3MAXPLUS turbochannel autoconfiguration table */
struct tcbus_attach_args kn03_tc_desc =
{
"tc", /* XXX common substructure */
TC_SPEED_25_MHZ,
KN03_TC_NSLOTS, tc_kn03_slots,
1, tc_kn03_builtins,
tc_ds_ioasic_intr_establish,
tc_ds_ioasic_intr_disestablish
};
/************************************************************************/
/* 3MIN slot addreseses */
static struct tc_slotdesc tc_kmin_slots [] = {
{ KV(KMIN_PHYS_TC_0_START), C(0) }, /* slot0 - tc option slot 0 */
{ KV(KMIN_PHYS_TC_1_START), C(1) }, /* slot1 - tc option slot 1 */
{ KV(KMIN_PHYS_TC_2_START), C(2) }, /* slot2 - tc option slot 2 */
{ KV(KMIN_PHYS_TC_3_START), C(3) } /* slot3 - IO asic on b'board */
};
int tc_kmin_nslots =
sizeof(tc_kmin_slots) / sizeof(tc_kmin_slots[0]);
/* 3MIN turbochannel autoconfiguration table */
struct tcbus_attach_args kmin_tc_desc =
{
"tc", /* XXX common substructure */
TC_SPEED_12_5_MHZ,
KMIN_TC_NSLOTS, tc_kmin_slots,
1, tc_kn03_builtins, /*XXX*/
tc_ds_ioasic_intr_establish,
tc_ds_ioasic_intr_disestablish,
};
/************************************************************************/
/*
* The builtin Turbonchannel devices on the MAXINE
* is the IOCTL asic, which is mapped into TC slot 3, and the PMAG-DV
* xcfb framebuffer, which is built into the baseboard.
*/
const struct tc_builtin tc_xine_builtins[] = {
{ "IOCTL ", 3, 0x0, C(3), /*C(3)*/ },
{ "PMAG-DV ", 2, 0x0, C(2), /*C(4)*/ }
};
/* MAXINE slot addreseses */
static struct tc_slotdesc tc_xine_slots [4] = {
{ KV(XINE_PHYS_TC_0_START), C(0) }, /* slot 0 - tc option slot 0 */
{ KV(XINE_PHYS_TC_1_START), C(1) }, /* slot 1 - tc option slot 1 */
/*{ KV(-1), C(-1) },*/ /* physical space for ``slot 2'' is reserved */
{ KV(XINE_PHYS_CFB_START), C(2) }, /* slot 2 - fb on b'board */
{ KV(XINE_PHYS_TC_3_START), C(3) } /* slot 3 - IO asic on b'board */
};
int tc_xine_nslots =
sizeof(tc_xine_slots) / sizeof(tc_xine_slots[0]);
struct tcbus_attach_args xine_tc_desc =
{
"tc", /* XXX common substructure */
TC_SPEED_12_5_MHZ, /* TC bus speed */
XINE_TC_NSLOTS, tc_xine_slots,
2, tc_xine_builtins,
tc_ds_ioasic_intr_establish,
tc_ds_ioasic_intr_disestablish
};
/************************************************************************/
/* 3MAX (kn02) turbochannel slots */
/* slot addreseses */
static struct tc_slotdesc tc_kn02_slots [8] = {
{ KV(KN02_PHYS_TC_0_START), C(0)}, /* slot 0 - tc option slot 0 */
{ KV(KN02_PHYS_TC_1_START), C(1), }, /* slot 1 - tc option slot 1 */
{ KV(KN02_PHYS_TC_2_START), C(2), }, /* slot 2 - tc option slot 2 */
{ KV(KN02_PHYS_TC_3_START), C(3), }, /* slot 3 - reserved */
{ KV(KN02_PHYS_TC_4_START), C(4), }, /* slot 4 - reserved */
{ KV(KN02_PHYS_TC_5_START), C(5), }, /* slot 5 - SCSI on b`board */
{ KV(KN02_PHYS_TC_6_START), C(6), }, /* slot 6 - b'board Ether */
{ KV(KN02_PHYS_TC_7_START), C(7), } /* slot 7 - system CSR, etc. */
};
int tc_kn02_nslots =
sizeof(tc_kn02_slots) / sizeof(tc_kn02_slots[0]);
#define KN02_ROM_NAME KN02_ASIC_NAME
#define TC_KN02_DEV_IOASIC -1
#define TC_KN02_DEV_ETHER 6
#define TC_KN02_DEV_SCSI 5
const struct tc_builtin tc_kn02_builtins[] = {
{ KN02_ROM_NAME,7, 0x0, C(TC_KN02_DEV_IOASIC) /* C(7)*/ },
{ TC_ETHER, 6, 0x0, C(TC_KN02_DEV_ETHER) /* C(6)*/ },
{ TC_SCSI, 5, 0x0, C(TC_KN02_DEV_SCSI) /* C(5)*/ }
};
struct tcbus_attach_args kn02_tc_desc =
{
"tc", /* XXX common substructure */
TC_SPEED_25_MHZ,
8, tc_kn02_slots,
3, tc_kn02_builtins, /*XXX*/
tc_ds_ioasic_intr_establish,
tc_ds_ioasic_intr_disestablish
};
/************************************************************************/
/*
* Function to map from a CPU code to a tcbus_attach_args struct.
* This should really be in machine-dependent code, where
* it could even be a macro.
*/
struct tcbus_attach_args *
cpu_tcdesc(cpu)
int cpu;
{
if (cpu == DS_3MAXPLUS) {
#ifdef DS5000_240
tc_enable_interrupt = kn03_enable_intr;
return &kn03_tc_desc;
#else
return (0);
#endif /* DS5000_240 */
} else if (cpu == DS_3MAX) {
#ifdef DS5000_200
tc_enable_interrupt = kn02_enable_intr;
return &kn02_tc_desc;
#else
return (0);
#endif /* DS5000_240 */
} else if (cpu == DS_3MIN) {
#ifdef DS5000_100
tc_enable_interrupt = kmin_enable_intr;
return &kmin_tc_desc;
#else
return (0);
#endif /*DS5000_100*/
} else if (cpu == DS_MAXINE) {
#ifdef DS5000_25
tc_enable_interrupt = xine_enable_intr;
return &xine_tc_desc;
#else
return (0);
#endif /*DS5000_25*/
} else if (cpu == DS_PMAX) {
#ifdef DIAGNOSTIC
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printf("tcattach: PMAX, no turbochannel\n");
#endif /*DIAGNOSTIC*/
return NULL;
} else if (cpu == DS_MIPSFAIR) {
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printf("tcattach: Mipsfair (5100), no turbochannel\n");
return NULL;
} else {
panic("cpu_tc: Unrecognized bus type 0x%x\n", cpu);
}
}
/*
* We have a TurboChannel bus. Configure it.
*/
void
config_tcbus(parent, cputype, printfn)
struct device *parent;
int cputype;
int printfn __P((void *, const char *));
{
struct tcbus_attach_args tcb;
struct tcbus_attach_args * tcbus = cpu_tcdesc(pmax_boardtype);
if (tcbus == NULL) {
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printf("no TurboChannel configuration info for this machine\n");
return;
}
/*
* Set up important CPU/chipset information.
*/
/*XXX*/
tcb.tba_busname = tcbus->tba_busname;
tcb.tba_speed = tcbus->tba_speed;
tcb.tba_nslots = tcbus->tba_nslots;
tcb.tba_slots = tcbus->tba_slots;
tcb.tba_nbuiltins = tcbus->tba_nbuiltins;
tcb.tba_builtins = tcbus->tba_builtins;
tcb.tba_intr_establish = tc_ds_intr_establish; /*XXX*/
tcb.tba_intr_disestablish = tc_ds_ioasic_intr_disestablish; /*XXX*/
config_found(parent, (struct confargs*)&tcb, printfn);
}
/*
* Called before autoconfiguration, to find a system console.
*
* Probe the turbochannel for a framebuffer option card, starting at
* the preferred slot and then scanning all slots. Configure the first
* supported framebuffer device found, if any, as the console, and
* return 1 if found.
*/
int
tc_findconsole(preferred_slot)
int preferred_slot;
{
int slot;
struct tcbus_attach_args * sc_desc;
/* First, try the slot configured as console in NVRAM. */
/* if (consprobeslot(preferred_slot)) return (1); */
/*
* Try to configure each turbochannel (or CPU-internal) device.
* Knows about gross internals of TurboChannel bus autoconfig
* descriptor, which needs to be fixed badly.
*/
if ((sc_desc = cpu_tcdesc(pmax_boardtype)) == NULL)
return 0;
for (slot = 0; slot < sc_desc->tba_nslots; slot++) {
if (tc_consprobeslot(sc_desc->tba_slots[slot].tcs_addr))
return (1);
}
return (0);
}
/*
* Look in a single TC option slot to see if it contains a possible
* framebuffer console device.
* Configure only the framebuffers for which driver are configured
* into the kernel. If a suitable framebuffer is found, initialize
* it, and set up glass-tty emulation.
*/
static int
tc_consprobeslot(tc_slotaddr)
tc_addr_t tc_slotaddr;
{
char name[20];
void *slotaddr = (void *) tc_slotaddr;
if (tc_badaddr(slotaddr))
return (0);
if (tc_checkslot(tc_slotaddr, name) == 0)
return (0);
/*
* We found an device in the given slot. Now see if it's a
* framebuffer for which we have a driver.
*/
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/*printf(", trying to init a \"%s\"", name);*/
#define DRIVER_FOR_SLOT(slotname, drivername) \
(strcmp (slotname, drivername) == 0)
#if NMFB > 0
if (DRIVER_FOR_SLOT(name, "PMAG-AA ") &&
mfbinit(NULL, slotaddr, 0, 1)) {
return (1);
}
#endif /* NMFB */
#if NSFB > 0
if (DRIVER_FOR_SLOT(name, "PMAGB-BA") &&
sfbinit(NULL, slotaddr, 0, 1)) {
return (1);
}
#endif /* NSFB */
#if NCFB > 0
/*"cfb"*/
if (DRIVER_FOR_SLOT(name, "PMAG-BA ") &&
cfbinit(NULL, slotaddr, 0, 1)) {
return (1);
}
#endif /* NCFB */
return (0);
}
/*
* Estabish an interrupt handler, but on what bus -- TC or ioctl asic?
*/
void
tc_ds_intr_establish(dev, cookie, level, handler, val)
struct device *dev;
void *cookie;
tc_intrlevel_t level;
intr_handler_t handler;
void *val;
{
/* Never tested on these processors */
if (cputype == DS_3MIN || cputype == DS_MAXINE)
printf("tc_enable %s sc %x slot %p\n",
dev->dv_xname, (int)val, cookie);
#ifdef DIAGNOSTIC
if (tc_enable_interrupt == NULL)
panic("tc_intr_establish: tc_enable not set\n");
#endif
#ifdef DEBUG
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printf("tc_intr_establish: slot %d level %d handler %p sc %p on\n",
(int) cookie, (int) level, handler, val);
#endif
/*
* Enable the interrupt from tc (or ioctl asic) slot with NetBSD/pmax
* sw-convention name ``cookie'' on this CPU.
* XXX store the level somewhere for selective enabling of
* interrupts from TC option slots.
*/
(*tc_enable_interrupt) ((int)cookie, handler, val, 1);
}
/* hack for kn03 ioasic */
void
tc_ds_ioasic_intr_setup ()
{
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printf("not setting up TC intrs\n");
}
/*
* establish an interrupt handler for an ioasic device.
* On NetBSD/pmax, there is currently a single, merged interrupt handler for
* both TC and ioasic. Just use the tc interrupt-establish function.
*/
void
tc_ds_ioasic_intr_establish(dev, cookie, level, handler, val)
struct device *dev;
void *cookie;
tc_intrlevel_t level;
intr_handler_t handler;
void *val;
{
tc_intr_establish(dev, cookie, level, handler, val);
}
void
tc_ds_ioasic_intr_disestablish(dev, arg)
struct device *dev;
void *arg;
{
/*(*tc_enable_interrupt) (ca->ca_slot, handler, 0);*/
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printf("cannot dis-establish IOASIC interrupts\n");
}
void
tc_ds_ioasic_iointr (framep, vec)
void * framep;
int vec;
{
printf("bogus interrupt handler fp %p vec %d\n", framep, vec);
}