/* $NetBSD: tc.c,v 1.12 1996/10/13 03:40:02 christos Exp $ */ /* * Copyright (c) 1994, 1995 Carnegie-Mellon University. * All rights reserved. * * Author: Jonathan Stone * * 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. */ #define TC_DEBUG /* until decstatn autoconfig works with dev/tc/tc.c*/ #include #include #include #include #include /* Which TC framebuffers have drivers, for configuring a console device. */ #include "cfb.h" #include "mfb.h" #include "sfb.h" extern int pmax_boardtype; /* * Old-style model-specific autoconfiguration description. */ struct tcbus_attach_args { u_int tca_nslots; struct tc_slotdesc *tca_slots; u_int tca_nbuiltins; const struct tc_builtin *tca_builtins; void (*tca_intr_establish) __P((struct device *dev, void *cookie, tc_intrlevel_t level, intr_handler_t handler, void *arg)); void (*tca_intr_disestablish) __P((struct device *, void *)); }; /* Return the appropriate tc_attach_args for a given cputype */ extern struct tc_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 */ int consprobeslot __P((int slot)); /* * TurboChannel autoconfiguration declarations and tables for DECstations. */ #include #include #include #include #include #include #include #include #include /*#include */ #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. */ #include "ds-tc-conf.c" /* * Function to map from a CPU code to a tcbus tc_attach_args struct. * This should really be in machine-dependent code, where * it could even be a macro. */ struct tc_attach_args * cpu_tcdesc(cpu) int cpu; { if (cpu == DS_3MAXPLUS) { tc_enable_interrupt = kn03_enable_intr; return &kn03_tc_desc; } else if (cpu == DS_3MAX) { tc_enable_interrupt = kn02_enable_intr; return &kn02_tc_desc; } else if (cpu == DS_3MIN) { tc_enable_interrupt = kmin_enable_intr; return &kmin_tc_desc; } else if (cpu == DS_MAXINE) { tc_enable_interrupt = xine_enable_intr; return &xine_tc_desc; } else if (cpu == DS_PMAX) { #ifdef DIAGNOSTIC printf("tcattach: PMAX, no turbochannel\n"); #endif return NULL; } else if (cpu == DS_MIPSFAIR) { 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 tc_attach_args tc; struct tc_attach_args * tcbus = cpu_tcdesc(pmax_boardtype); /* * Set up important CPU/chipset information. */ tc.tca_nslots = tcbus->tca_nslots; tc.tca_slots = tcbus->tca_slots; tc.tca_nbuiltins = tcbus->tca_nbuiltins; tc.tca_builtins = tcbus->tca_builtins; tc.tca_intr_establish = tc_ds_intr_establish; /*XXX*/ tc.tca_intr_disestablish = tc_ds_ioasic_intr_disestablish; /*XXX*/ config_found(parent, (struct confargs*)&tc, printfn); } /* * 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. * Called before autoconfiguration, to find a system console. */ int tc_findconsole(preferred_slot) int preferred_slot; { int slot; struct tc_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->tca_nslots; slot++) { if (tc_consprobeslot(slot)) return (1); } return (0); } /* * Try and configure one slot as framebuffer console. * Accept only the framebuffers for which driver are configured into * the kernel. If a suitable framebuffer is found, attach it and * set up glass-tty emulation. */ int tc_consprobeslot(slot) int slot; { void *slotaddr; char name[20]; struct tc_attach_args * sc_desc; if (slot < 0 || ((sc_desc = cpu_tcdesc(pmax_boardtype)) == NULL)) return 0; slotaddr = (void *)(sc_desc->tca_slots[slot].tcs_addr); if (tc_badaddr(slotaddr)) return (0); if (tc_checkslot(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. */ /*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(slotaddr, 0, 1)) { return (1); } #endif /* NMFB */ #if NSFB > 0 if (DRIVER_FOR_SLOT(name, "PMAGB-BA") && sfbinit(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 %d\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 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 () { 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);*/ printf("cannot dis-establish IOASIC interrupts\n"); } void tc_ds_ioasic_iointr (framep, vec) void * framep; int vec; { printf("bogus interrupt handler fp %x vec %d\n", framep, vec); } /* XXX */ #include