/* $NetBSD: ubavar.h,v 1.39 2008/03/11 05:34:02 matt 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. 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 */ #ifndef _QBUS_UBAVAR_H #define _QBUS_UBAVAR_H /* * 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. */ /* * 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 { device_t uh_dev; /* Device struct, autoconfig */ struct evcnt uh_intrcnt; /* interrupt counting */ SIMPLEQ_HEAD(, uba_unit) uh_resq; /* resource wait chain */ SIMPLEQ_HEAD(, uba_reset) uh_resetq; /* ubareset queue */ int uh_lastiv; /* last free interrupt vector */ int (*uh_errchk)(struct uba_softc *); void (*uh_beforescan)(struct uba_softc *); void (*uh_afterscan)(struct uba_softc *); void (*uh_ubainit)(struct uba_softc *); void (*uh_ubapurge)(struct uba_softc *, int); short uh_nr; /* Unibus sequential number */ short uh_type; /* Type of bus */ bus_space_tag_t uh_iot; /* Tag for this Unibus */ bus_space_handle_t uh_ioh; /* Handle for I/O space */ bus_dma_tag_t uh_dmat; char *uh_used; /* I/O addresses used */ }; /* * 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 */ device_t uu_dev; /* unit's device_t */ int uu_bdp; /* for controllers that hang on to bdp's */ int (*uu_ready)(struct uba_unit *); void *uu_ref; /* Buffer this is related to */ short uu_xclu; /* want exclusive use of bdp's */ short uu_keepbdp; /* hang on to bdp's once allocated */ }; /* * Reset structure. All devices that needs to be reinitialized * after an ubareset registers with this struct. */ struct uba_reset { SIMPLEQ_ENTRY(uba_reset) ur_resetq; void (*ur_reset)(device_t); device_t ur_dev; }; /* * uba_attach_args is used during autoconfiguration. It is sent * from ubascan() to each (possible) device. */ struct uba_attach_args { bus_space_tag_t ua_iot; /* Tag for this bus I/O-space */ bus_addr_t ua_ioh; /* I/O regs addr */ bus_dma_tag_t ua_dmat; /* DMA tag for this bus'es dma */ struct evcnt *ua_evcnt; void *ua_icookie; /* Cookie for interrupt establish */ int ua_iaddr; /* Full CSR address of device */ int ua_br; /* IPL this dev interrupted on */ int ua_cvec; /* Vector for this device */ }; /* * 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 */ #define UBA_DONTQUE 0x10 /* Do not enqueue xfer */ /* * Type of adapter. */ #define UBA_UBA 0 /* Traditional unibus adapter */ #define UBA_MVI 1 /* MVI direct-mapped unibus */ #define UBA_QBUS 2 /* Qbus with map registers */ /* * Struct for unibus allocation. */ struct ubinfo { bus_dmamap_t ui_dmam; bus_dma_segment_t ui_seg; int ui_rseg; void *ui_vaddr; bus_addr_t ui_baddr; bus_size_t ui_size; }; /* * Some common defines for all subtypes of U/Q-buses/adapters. */ #define MAXUBAXFER (63*1024) /* Max transfer size in bytes */ #define ubdevreg(addr) ((addr) & 017777) #ifdef _KERNEL void uba_intr_establish(void *, int, void (*)(void *), void *, struct evcnt *); void uba_reset_establish(void (*)(device_t), device_t); void uba_attach(struct uba_softc *, unsigned long); void uba_enqueue(struct uba_unit *); void uba_done(struct uba_softc *); void ubareset(struct uba_softc *); int uballoc(struct uba_softc *, struct ubinfo *, int); int ubmemalloc(struct uba_softc *, struct ubinfo *, int); void ubfree(struct uba_softc *, struct ubinfo *); void ubmemfree(struct uba_softc *, struct ubinfo *); #endif /* _KERNEL */ #endif /* _QBUS_UBAVAR_H */
