/* $NetBSD: ubavar.h,v 1.18 1996/08/20 13:38:04 ragge Exp $ */ /* * Copyright (c) 1982, 1986 Regents of the University of California. * All rights reserved. * * 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 University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)ubavar.h 7.7 (Berkeley) 6/28/90 */ /* * This file contains definitions related to the kernel structures * for dealing with the unibus adapters. * * Each uba has a uba_softc structure. * Each unibus controller which is not a device has a uba_ctlr structure. * Each unibus device has a uba_device structure. */ #include #include #include /* For struct ivec_dsp */ /* * Per-uba structure. * * This structure holds the interrupt vector for the uba, * and its address in physical and virtual space. At boot time * we determine the devices attached to the uba's and their * interrupt vectors, filling in uh_vec. We free the map * register and bdp resources of the uba into the structures * defined here. * * During normal operation, resources are allocated and returned * to the structures here. We watch the number of passive releases * on each uba, and if the number is excessive may reset the uba. * * When uba resources are needed and not available, or if a device * which can tolerate no other uba activity (rk07) gets on the bus, * then device drivers may have to wait to get to the bus and are * queued here. It is also possible for processes to block in * the unibus driver in resource wait (mrwant, bdpwant); these * wait states are also recorded here. */ struct uba_softc { struct device uh_dev; /* Device struct, autoconfig */ SIMPLEQ_HEAD(, uba_unit) uh_resq; /* resource wait chain */ int uh_type; /* type of adaptor */ struct uba_regs *uh_uba; /* virt addr of uba adaptor regs */ struct pte *uh_mr; /* start of page map */ int uh_memsize; /* size of uba memory, pages */ caddr_t uh_iopage; /* start of uba io page */ void (**uh_reset) __P((int));/* UBA reset function array */ int *uh_resarg; /* array of ubareset args */ int uh_resno; /* Number of devices to reset */ struct ivec_dsp *uh_idsp; /* Interrupt dispatch area */ u_int *uh_iarea; /* Interrupt vector array */ short uh_mrwant; /* someone is waiting for map reg */ short uh_bdpwant; /* someone awaits bdp's */ int uh_bdpfree; /* free bdp's */ int uh_zvcnt; /* number of recent 0 vectors */ long uh_zvtime; /* time over which zvcnt accumulated */ int uh_zvtotal; /* total number of 0 vectors */ int uh_lastiv; /* last free interrupt vector */ short uh_users; /* transient bdp use count */ short uh_xclu; /* an rk07 is using this uba! */ int uh_lastmem; /* limit of any unibus memory */ struct map *uh_map; /* register free map */ int (*uh_errchk) __P((struct uba_softc *)); void (*uh_beforescan) __P((struct uba_softc *)); void (*uh_afterscan) __P((struct uba_softc *)); void (*uh_ubainit) __P((struct uba_softc *)); void (*uh_ubapurge) __P((struct uba_softc *, int)); #ifdef DW780 struct ivec_dsp uh_dw780; /* Interrupt handles for DW780 */ #endif short uh_nr; /* Unibus sequential number */ short uh_nbdp; /* # of BDP's */ }; #define UAMSIZ 100 /* given a pointer to uba_regs, find DWBUA registers */ /* this should be replaced with a union in uba_softc */ #define BUA(uba) ((struct dwbua_regs *)(uba)) /* * Per-controller structure. * The unit struct is common to both the adapter and the controller * to which it belongs. It is only used on controllers that handles * BDP's, and calls the adapter queueing subroutines. */ struct uba_unit { SIMPLEQ_ENTRY(uba_unit) uu_resq;/* Queue while waiting for resources */ void *uu_softc; /* Pointer to units softc */ int uu_ubinfo; /* save unibus registers, etc */ int uu_bdp; /* for controllers that hang on to bdp's */ int (*uu_ready) __P((struct uba_unit *)); short uu_xclu; /* want exclusive use of bdp's */ short uu_keepbdp; /* hang on to bdp's once allocated */ }; /* * uba_attach_args is used during autoconfiguration. It is sent * from ubascan() to each (possible) device. */ struct uba_attach_args { caddr_t ua_addr; /* Pointer to int routine, filled in by probe*/ void (*ua_ivec) __P((int)); /* UBA reset routine, filled in by probe */ void (*ua_reset) __P((int)); int ua_iaddr; int ua_br; int ua_cvec; }; /* * Flags to UBA map/bdp allocation routines */ #define UBA_NEEDBDP 0x01 /* transfer needs a bdp */ #define UBA_CANTWAIT 0x02 /* don't block me */ #define UBA_NEED16 0x04 /* need 16 bit addresses only */ #define UBA_HAVEBDP 0x08 /* use bdp specified in high bits */ /* * Macros to bust return word from map allocation routines. * SHOULD USE STRUCTURE TO STORE UBA RESOURCE ALLOCATION: */ #ifdef notyet struct ubinfo { long ub_addr; /* unibus address: mr + boff */ int ub_nmr; /* number of registers, 0 if empty */ int ub_bdp; /* bdp number, 0 if none */ }; #define UBAI_MR(i) (((i) >> 9) & 0x7ff) /* starting map register */ #define UBAI_BOFF(i) ((i)&0x1ff) /* page offset */ #else #define UBAI_BDP(i) ((int)(((unsigned)(i)) >> 28)) #define BDPMASK 0xf0000000 #define UBAI_NMR(i) ((int)((i) >> 20) & 0xff) /* max 255 (=127.5K) */ #define UBA_MAXNMR 255 #define UBAI_MR(i) ((int)((i) >> 9) & 0x7ff) /* max 2047 */ #define UBA_MAXMR 2047 #define UBAI_BOFF(i) ((int)((i) & 0x1ff)) #define UBAI_ADDR(i) ((int)((i) & 0xfffff)) /* uba addr (boff+mr) */ #define UBAI_INFO(off, mr, nmr, bdp) \ (((bdp) << 28) | ((nmr) << 20) | ((mr) << 9) | (off)) #endif #ifndef _LOCORE #ifdef _KERNEL #define ubago(ui) ubaqueue(ui) #define b_forw b_hash.le_next /* Nice to have when handling uba queues */ extern struct cfdriver uba_cd; void ubasetvec __P((struct device *, int, void (*) __P((int)))); int uballoc __P((struct uba_softc *, caddr_t, int, int)); void ubarelse __P((struct uba_softc *, int *)); int ubaqueue __P((struct uba_unit *, struct buf *)); void ubadone __P((struct uba_unit *)); void ubareset __P((int)); #endif /* _KERNEL */ #endif !_LOCORE