/* $NetBSD: isavar.h,v 1.40 2003/05/09 23:51:29 fvdl Exp $ */ /*- * Copyright (c) 1997, 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of Wasabi Systems, Inc. * * 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 NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Copyright (c) 1995 Chris G. Demetriou * Copyright (c) 1992 Berkeley Software Design, Inc. * 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 Berkeley Software * Design, Inc. * 4. The name of Berkeley Software Design must not be used to endorse * or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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. * * BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp */ #ifndef _DEV_ISA_ISAVAR_H_ #define _DEV_ISA_ISAVAR_H_ /* * Definitions for ISA autoconfiguration. */ #include #include /* * Structures and definitions needed by the machine-dependent header. */ struct isabus_attach_args; #include /* * ISA bus attach arguments */ struct isabus_attach_args { char *iba_busname; /* XXX should be common */ bus_space_tag_t iba_iot; /* isa i/o space tag */ bus_space_tag_t iba_memt; /* isa mem space tag */ bus_dma_tag_t iba_dmat; /* isa DMA tag */ isa_chipset_tag_t iba_ic; }; /* * ISA bus resources. */ struct isa_io { int ir_addr; int ir_size; }; struct isa_iomem { int ir_addr; int ir_size; }; struct isa_irq { int ir_irq; }; struct isa_drq { int ir_drq; }; struct isa_pnpname { struct isa_pnpname *ipn_next; char *ipn_name; }; /* * Machine-dependent code provides a list of these to describe * devices on the ISA bus which should be attached via direct * configuration. * * All of this information is dynamically allocated, so that * the ISA bus driver may free all of this information if the * bus does not support dynamic attach/detach of devices (e.g. * on a docking station). * * Some info on the "ik_key" field: This is a unique number for * each knowndev node. If, when we need to re-enumerate the * knowndevs, we discover that a node with key N is in the old * list but not in the new, the device has disappeared. Similarly, * if a node with key M is in the new list but not in the old, * the device is new. Note that the knowndevs list must be * sorted in ascending "key" order. */ struct isa_knowndev { TAILQ_ENTRY(isa_knowndev) ik_list; uintptr_t ik_key; struct device *ik_claimed; /* * The rest of these fields correspond to isa_attach_args * fields. */ char *ik_pnpname; struct isa_pnpname *ik_pnpcompatnames; struct isa_io *ik_io; int ik_nio; struct isa_iomem *ik_iomem; int ik_niomem; struct isa_irq *ik_irq; int ik_nirq; struct isa_drq *ik_drq; int ik_ndrq; }; /* * ISA driver attach arguments */ struct isa_attach_args { bus_space_tag_t ia_iot; /* isa i/o space tag */ bus_space_tag_t ia_memt; /* isa mem space tag */ bus_dma_tag_t ia_dmat; /* DMA tag */ isa_chipset_tag_t ia_ic; /* * PNP (or other) names to with which we can match a device * driver to a device that machine-dependent code tells us * is there (i.e. support for direct-configuration of ISA * devices). */ char *ia_pnpname; struct isa_pnpname *ia_pnpcompatnames; struct isa_io *ia_io; /* I/O resources */ int ia_nio; struct isa_iomem *ia_iomem; /* memory resources */ int ia_niomem; struct isa_irq *ia_irq; /* IRQ resources */ int ia_nirq; struct isa_drq *ia_drq; /* DRQ resources */ int ia_ndrq; void *ia_aux; /* driver specific */ }; /* * Test to determine if a given call to an ISA device probe routine * is actually an attempt to do direct configuration. */ #define ISA_DIRECT_CONFIG(ia) \ ((ia)->ia_pnpname != NULL || (ia)->ia_pnpcompatnames != NULL) #include "locators.h" /* * ISA master bus */ struct isa_softc { struct device sc_dev; /* base device */ bus_space_tag_t sc_iot; /* isa io space tag */ bus_space_tag_t sc_memt; /* isa mem space tag */ bus_dma_tag_t sc_dmat; /* isa DMA tag */ isa_chipset_tag_t sc_ic; TAILQ_HEAD(, isa_knowndev) sc_knowndevs; int sc_dynamicdevs; }; #define cf_iobase cf_loc[ISACF_PORT] #define cf_iosize cf_loc[ISACF_SIZE] #define cf_maddr cf_loc[ISACF_IOMEM] #define cf_msize cf_loc[ISACF_IOSIZ] #define cf_irq cf_loc[ISACF_IRQ] #define cf_drq cf_loc[ISACF_DRQ] #define cf_drq2 cf_loc[ISACF_DRQ2] /* * ISA interrupt handler manipulation. * * To establish an ISA interrupt handler, a driver calls isa_intr_establish() * with the interrupt number, type, level, function, and function argument of * the interrupt it wants to handle. Isa_intr_establish() returns an opaque * handle to an event descriptor if it succeeds, and returns NULL on failure. * (XXX: some drivers can't handle this, since the former behaviour was to * invoke panic() on failure). When the system does not accept any of the * interrupt types supported by the driver, the driver should fail the attach. * Interrupt handlers should return 0 for "interrupt not for me", 1 for * "I took care of it", or -1 for "I guess it was mine, but I wasn't * expecting it." * * To remove an interrupt handler, the driver calls isa_intr_disestablish() * with the handle returned by isa_intr_establish() for that handler. * * The event counter (struct evcnt) associated with an interrupt line * (to be used as 'parent' for an ISA device's interrupt handler's evcnt) * can be obtained with isa_intr_evcnt(). */ /* ISA interrupt sharing types */ char *isa_intr_typename __P((int type)); /* * Some ISA devices (e.g. on a VLB) can perform 32-bit DMA. This * flag is passed to bus_dmamap_create() to indicate that fact. */ #define ISABUS_DMA_32BIT BUS_DMA_BUS1 /* * This flag indicates that the DMA channel should not yet be reserved, * even if BUS_DMA_ALLOCNOW is specified. */ #define ISABUS_DMA_DEFERCHAN BUS_DMA_BUS2 #endif /* _DEV_ISA_ISAVAR_H_ */