776c58e187
probe functions for console framebuffers, rewritten to work with the machine-independent TC support in sys/dev/tc.
496 lines
13 KiB
C
496 lines
13 KiB
C
/* $NetBSD: tc_subr.c,v 1.1 1996/02/27 22:28:08 jonathan Exp $ */
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/*
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* Copyright 1996 The Board of Trustees of The Leland Stanford
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* Junior University. All Rights Reserved.
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*
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* Permission to use, copy, modify, and distribute this
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* software and its documentation for any purpose and without
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* fee is hereby granted, provided that the above copyright
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* notice appear in all copies. Stanford University
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* makes no representations about the suitability of this
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* software for any purpose. It is provided "as is" without
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* express or implied warranty.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <dev/cons.h>
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#include <dev/tc/tcvar.h>
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#include <machine/autoconf.h>
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/* Which TC framebuffers have drivers, for configuring a console device. */
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#include <cfb.h>
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#include <mfb.h>
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#include <sfb.h>
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extern int pmax_boardtype;
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/* Return the appropriate tcbus_attach_args for a given cputype */
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extern struct tcbus_attach_args * cpu_tcdesc __P ((int cputype));
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/* Definition of the driver for autoconfig. */
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int tcmatch(struct device *, void *, void *);
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void tcattach(struct device *, struct device *, void *);
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int tcprint(void *, char *);
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void tc_ds_intr_establish __P((struct device *, void *, tc_intrlevel_t,
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intr_handler_t handler, intr_arg_t arg));
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void tc_intr_disestablish __P((struct device *dev, void *cookie));
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caddr_t tc_cvtaddr __P((struct confargs *));
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extern int cputype;
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extern int tc_findconsole __P((int prom_slot));
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/* Forward declarations */
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static int tc_consprobeslot __P((tc_addr_t slotaddr));
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/*
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* TurboChannel autoconfiguration declarations and tables for DECstations.
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*/
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#include <machine/machConst.h>
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#include <pmax/pmax/pmaxtype.h>
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#include <pmax/pmax/trap.h>
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#include <pmax/pmax/asic.h>
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#include <pmax/pmax/kn03.h>
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#include <pmax/pmax/kn02.h>
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#include <pmax/pmax/kmin.h>
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#include <pmax/pmax/maxine.h>
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#include <pmax/pmax/turbochannel.h>
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/*#include <pmax/pmax/nameglue.h>*/
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#define KV(x) ((tc_addr_t)MACH_PHYS_TO_UNCACHED(x))
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void tc_ds_ioasic_intr_setup __P((void));
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void tc_ds_ioasic_intr_establish __P((struct device *dev, void *cookie,
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tc_intrlevel_t level,
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intr_handler_t handler,
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void *arg));
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void tc_ds_ioasic_intr_disestablish __P((struct device *, void *));
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void tc_ds_ioasic_iointr __P((void *, int));
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int tc_ds_ioasic_getdev __P((struct confargs *));
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/* XXX*/
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/* should be handled elsewhere? */
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typedef void (*tc_enable_t) __P ((u_int slotno, intr_handler_t,
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void *intr_arg, int on));
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typedef int (*tc_handler_t) __P((void *intr_arg));
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extern void (*tc_enable_interrupt) __P ((u_int slotno, tc_handler_t,
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void *intr_arg, int on));
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extern void kn03_enable_intr __P((u_int slot, tc_handler_t,
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void *intr_arg, int on));
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extern void kn02_enable_intr __P ((u_int slot, tc_handler_t,
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void *intr_arg, int on));
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extern void kmin_enable_intr __P ((u_int slot, tc_handler_t,
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void *intr_arg, int on));
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extern void xine_enable_intr __P ((u_int slot, tc_handler_t,
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void *intr_arg, int on));
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/*
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* Configuration tables for the four models of
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* Decstation that have turbochannels.
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* None of the four are the same.
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*/
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#define C(x) ((void *)(u_long)x)
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#define TC_SCSI "PMAZ-AA "
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#define TC_ETHER "PMAD-AA "
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/*
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* 3MIN and 3MAXPLUS turbochannel slots.
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* The kmin (3MIN) and kn03 (3MAXPLUS) have the same number of slots.
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* We can share one configuration-struct table and use two slot-address
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* tables to handle the fact that the turbochannel slot size and base
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* addresses are different on the two machines.
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* (thankfully, the IOCTL ASIC subslots are all the same size on all
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* DECstations with IOASICs.) The devices are listed in the order in which
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* we should probe and attach them.
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*/
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/*
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* The only builtin Turbochannel device on the kn03 and kmin
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* is the IOCTL asic, which is mapped into TC slot 3.
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*/
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const struct tc_builtin tc_kn03_builtins[] = {
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{ "IOCTL ", 3, 0x0, C(3), /*C(3)*/ }
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};
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/* 3MAXPLUS TC slot addresses */
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static struct tc_slotdesc tc_kn03_slots [4] = {
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{ KV(KN03_PHYS_TC_0_START), C(0) }, /* slot0 - tc option slot 0 */
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{ KV(KN03_PHYS_TC_1_START), C(1) }, /* slot1 - tc option slot 1 */
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{ KV(KN03_PHYS_TC_2_START), C(2) }, /* slot2 - tc option slot 2 */
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{ KV(KN03_PHYS_TC_3_START), C(3) } /* slot3 - IO asic on b'board */
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};
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int tc_kn03_nslots =
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sizeof(tc_kn03_slots) / sizeof(tc_kn03_slots[0]);
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/* 3MAXPLUS turbochannel autoconfiguration table */
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struct tcbus_attach_args kn03_tc_desc =
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{
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"tc", /* XXX common substructure */
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1,
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KN03_TC_NSLOTS, tc_kn03_slots,
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1, tc_kn03_builtins,
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tc_ds_ioasic_intr_establish,
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tc_ds_ioasic_intr_disestablish
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};
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/************************************************************************/
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/* 3MIN slot addreseses */
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static struct tc_slotdesc tc_kmin_slots [] = {
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{ KV(KMIN_PHYS_TC_0_START), C(0) }, /* slot0 - tc option slot 0 */
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{ KV(KMIN_PHYS_TC_1_START), C(1) }, /* slot1 - tc option slot 1 */
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{ KV(KMIN_PHYS_TC_2_START), C(2) }, /* slot2 - tc option slot 2 */
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{ KV(KMIN_PHYS_TC_3_START), C(3) } /* slot3 - IO asic on b'board */
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};
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int tc_kmin_nslots =
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sizeof(tc_kmin_slots) / sizeof(tc_kmin_slots[0]);
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/* 3MIN turbochannel autoconfiguration table */
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struct tcbus_attach_args kmin_tc_desc =
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{
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"tc", /* XXX common substructure */
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0,
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KMIN_TC_NSLOTS, tc_kmin_slots,
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1, tc_kn03_builtins, /*XXX*/
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tc_ds_ioasic_intr_establish,
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tc_ds_ioasic_intr_disestablish,
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};
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/************************************************************************/
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/*
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* The builtin Turbonchannel devices on the MAXINE
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* is the IOCTL asic, which is mapped into TC slot 3, and the PMAG-DV
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* xcfb framebuffer, which is built into the baseboard.
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*/
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const struct tc_builtin tc_xine_builtins[] = {
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{ "IOCTL ", 3, 0x0, C(3), /*C(3)*/ },
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{ "PMAG-DV ", 2, 0x0, C(2), /*C(4)*/ }
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};
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/* MAXINE slot addreseses */
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static struct tc_slotdesc tc_xine_slots [4] = {
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{ KV(XINE_PHYS_TC_0_START), C(0) }, /* slot 0 - tc option slot 0 */
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{ KV(XINE_PHYS_TC_1_START), C(1) }, /* slot 1 - tc option slot 1 */
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/*{ KV(-1), C(-1) },*/ /* physical space for ``slot 2'' is reserved */
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{ KV(XINE_PHYS_CFB_START), C(2) }, /* slot 2 - fb on b'board */
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{ KV(XINE_PHYS_TC_3_START), C(3) } /* slot 3 - IO asic on b'board */
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};
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int tc_xine_nslots =
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sizeof(tc_xine_slots) / sizeof(tc_xine_slots[0]);
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struct tcbus_attach_args xine_tc_desc =
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{
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"tc", /* XXX common substructure */
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0, /* number of slots */
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XINE_TC_NSLOTS, tc_xine_slots,
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2, tc_xine_builtins,
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tc_ds_ioasic_intr_establish,
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tc_ds_ioasic_intr_disestablish
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};
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/************************************************************************/
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/* 3MAX (kn02) turbochannel slots */
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/* slot addreseses */
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static struct tc_slotdesc tc_kn02_slots [8] = {
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{ KV(KN02_PHYS_TC_0_START), C(0)}, /* slot 0 - tc option slot 0 */
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{ KV(KN02_PHYS_TC_1_START), C(1), }, /* slot 1 - tc option slot 1 */
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{ KV(KN02_PHYS_TC_2_START), C(2), }, /* slot 2 - tc option slot 2 */
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{ KV(KN02_PHYS_TC_3_START), C(3), }, /* slot 3 - reserved */
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{ KV(KN02_PHYS_TC_4_START), C(4), }, /* slot 4 - reserved */
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{ KV(KN02_PHYS_TC_5_START), C(5), }, /* slot 5 - SCSI on b`board */
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{ KV(KN02_PHYS_TC_6_START), C(6), }, /* slot 6 - b'board Ether */
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{ KV(KN02_PHYS_TC_7_START), C(7), } /* slot 7 - system CSR, etc. */
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};
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int tc_kn02_nslots =
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sizeof(tc_kn02_slots) / sizeof(tc_kn02_slots[0]);
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#define KN02_ROM_NAME KN02_ASIC_NAME
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#define TC_KN02_DEV_IOASIC -1
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#define TC_KN02_DEV_ETHER 6
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#define TC_KN02_DEV_SCSI 5
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const struct tc_builtin tc_kn02_builtins[] = {
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{ KN02_ROM_NAME,7, 0x0, C(TC_KN02_DEV_IOASIC) /* C(7)*/ },
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{ TC_ETHER, 6, 0x0, C(TC_KN02_DEV_ETHER) /* C(6)*/ },
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{ TC_SCSI, 5, 0x0, C(TC_KN02_DEV_SCSI) /* C(5)*/ }
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};
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struct tcbus_attach_args kn02_tc_desc =
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{
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"tc", /* XXX common substructure */
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1,
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8, tc_kn02_slots,
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3, tc_kn02_builtins, /*XXX*/
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tc_ds_ioasic_intr_establish,
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tc_ds_ioasic_intr_disestablish
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};
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/************************************************************************/
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/*
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* Function to map from a CPU code to a tcbus_attach_args struct.
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* This should really be in machine-dependent code, where
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* it could even be a macro.
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*/
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struct tcbus_attach_args *
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cpu_tcdesc(cpu)
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int cpu;
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{
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if (cpu == DS_3MAXPLUS) {
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tc_enable_interrupt = kn03_enable_intr;
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return &kn03_tc_desc;
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} else if (cpu == DS_3MAX) {
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tc_enable_interrupt = kn02_enable_intr;
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return &kn02_tc_desc;
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} else if (cpu == DS_3MIN) {
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tc_enable_interrupt = kmin_enable_intr;
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return &kmin_tc_desc;
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} else if (cpu == DS_MAXINE) {
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tc_enable_interrupt = xine_enable_intr;
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return &xine_tc_desc;
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} else if (cpu == DS_PMAX) {
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#ifdef DIAGNOSTIC
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printf("tcattach: PMAX, no turbochannel\n");
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#endif
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return NULL;
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} else if (cpu == DS_MIPSFAIR) {
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printf("tcattach: Mipsfair (5100), no turbochannel\n");
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return NULL;
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} else {
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panic("cpu_tc: Unrecognized bus type 0x%x\n", cpu);
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}
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}
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/*
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* We have a TurboChannel bus. Configure it.
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*/
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void
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config_tcbus(parent, cputype, printfn)
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struct device *parent;
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int cputype;
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int printfn __P((void *, char *));
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{
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struct tcbus_attach_args tcb;
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struct tcbus_attach_args * tcbus = cpu_tcdesc(pmax_boardtype);
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if (tcbus == NULL) {
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printf("no TurboChannel configuration info for this machine\n");
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return;
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}
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/*
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* Set up important CPU/chipset information.
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*/
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/*XXX*/
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tcb.tba_busname = tcbus->tba_busname;
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tcb.tba_speed = tcbus->tba_speed;
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tcb.tba_nslots = tcbus->tba_nslots;
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tcb.tba_slots = tcbus->tba_slots;
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tcb.tba_nbuiltins = tcbus->tba_nbuiltins;
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tcb.tba_builtins = tcbus->tba_builtins;
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tcb.tba_intr_establish = tc_ds_intr_establish; /*XXX*/
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tcb.tba_intr_disestablish = tc_ds_ioasic_intr_disestablish; /*XXX*/
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config_found(parent, (struct confargs*)&tcb, printfn);
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}
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/*
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* Called before autoconfiguration, to find a system console.
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*
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* Probe the turbochannel for a framebuffer option card, starting at
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* the preferred slot and then scanning all slots. Configure the first
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* supported framebuffer device found, if any, as the console, and
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* return 1 if found.
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*/
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int
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tc_findconsole(preferred_slot)
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int preferred_slot;
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{
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int slot;
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struct tcbus_attach_args * sc_desc;
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/* First, try the slot configured as console in NVRAM. */
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/* if (consprobeslot(preferred_slot)) return (1); */
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/*
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* Try to configure each turbochannel (or CPU-internal) device.
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* Knows about gross internals of TurboChannel bus autoconfig
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* descriptor, which needs to be fixed badly.
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*/
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if ((sc_desc = cpu_tcdesc(pmax_boardtype)) == NULL)
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return 0;
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for (slot = 0; slot < sc_desc->tba_nslots; slot++) {
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if (tc_consprobeslot(sc_desc->tba_slots[slot].tcs_addr))
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return (1);
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}
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return (0);
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}
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/*
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* Look in a single TC option slot to see if it contains a possible
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* framebuffer console device.
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* Configure only the framebuffers for which driver are configured
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* into the kernel. If a suitable framebuffer is found, initialize
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* it, and set up glass-tty emulation.
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*/
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static int
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tc_consprobeslot(tc_slotaddr)
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tc_addr_t tc_slotaddr;
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{
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char name[20];
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void *slotaddr = (void *) tc_slotaddr;
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struct tcbus_attach_args * sc_desc;
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if (tc_badaddr(slotaddr))
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return (0);
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if (tc_checkslot(slotaddr, name) == 0)
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return (0);
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/*
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* We found an device in the given slot. Now see if it's a
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* framebuffer for which we have a driver.
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*/
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/*printf(", trying to init a \"%s\"", name);*/
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#define DRIVER_FOR_SLOT(slotname, drivername) \
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(strcmp (slotname, drivername) == 0)
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#if NMFB > 0
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if (DRIVER_FOR_SLOT(name, "PMAG-AA ") &&
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mfbinit(slotaddr, 0, 1)) {
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return (1);
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}
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#endif /* NMFB */
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#if NSFB > 0
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if (DRIVER_FOR_SLOT(name, "PMAGB-BA") &&
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sfbinit(slotaddr, 0, 1)) {
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return (1);
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}
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#endif /* NSFB */
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#if NCFB > 0
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/*"cfb"*/
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if (DRIVER_FOR_SLOT(name, "PMAG-BA ") &&
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cfbinit(NULL, slotaddr, 0, 1)) {
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return (1);
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}
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#endif /* NCFB */
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return (0);
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}
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/*
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* Estabish an interrupt handler, but on what bus -- TC or ioctl asic?
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*/
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void
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tc_ds_intr_establish(dev, cookie, level, handler, val)
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struct device *dev;
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void *cookie;
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tc_intrlevel_t level;
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intr_handler_t handler;
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void *val;
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{
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/* Never tested on these processors */
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if (cputype == DS_3MIN || cputype == DS_MAXINE)
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printf("tc_enable %s sc %x slot %d\n",
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dev->dv_xname, (int)val, cookie);
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#ifdef DIAGNOSTIC
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if (tc_enable_interrupt == NULL)
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panic("tc_intr_establish: tc_enable not set\n");
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#endif
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#ifdef DEBUG
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printf("tc_intr_establish: slot %d level %d handler %p sc %p on\n",
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(int) cookie, (int) level, handler, val);
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#endif
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/*
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* Enable the interrupt from tc (or ioctl asic) slot with NetBSD/pmax
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* sw-convention name ``cookie'' on this CPU.
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* XXX store the level somewhere for selective enabling of
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* interrupts from TC option slots.
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*/
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(*tc_enable_interrupt) ((int)cookie, handler, val, 1);
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}
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/* hack for kn03 ioasic */
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void
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tc_ds_ioasic_intr_setup ()
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{
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printf("not setting up TC intrs\n");
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}
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/*
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* establish an interrupt handler for an ioasic device.
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* On NetBSD/pmax, there is currently a single, merged interrupt handler for
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* both TC and ioasic. Just use the tc interrupt-establish function.
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*/
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void
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tc_ds_ioasic_intr_establish(dev, cookie, level, handler, val)
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struct device *dev;
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void *cookie;
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tc_intrlevel_t level;
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intr_handler_t handler;
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void *val;
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{
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tc_intr_establish(dev, cookie, level, handler, val);
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}
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void
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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);
|
||
}
|