/* $NetBSD: isavar.h,v 1.57 2025/10/20 15:35:47 thorpej 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. * * 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 <sys/param.h> #include <sys/device.h> #include <sys/errno.h> #include <sys/queue.h> #include <sys/bus.h> /* * Structures and definitions needed by the machine-dependent header. */ struct isabus_attach_args; #include <machine/isa_machdep.h> /* * ISA bus attach arguments */ struct isabus_attach_args { const char *_iba_busname; /* XXX placeholder */ 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; }; int isabusprint(void *, const char *); static inline device_t isabus_attach(device_t dev, struct isabus_attach_args *iba) { return config_found(dev, iba, isabusprint, CFARGS(.iattr = "isabus", .devhandle = device_handle(dev))); } /* * 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; }; /* * 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) /* * ISA master bus */ struct isa_softc { device_t 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; }; /* * These must be in sync with the ISACF_XXX_DEFAULT definitions * in "locators.h" (generated from files.isa). * (not including "locators.h" here to avoid dependency) */ #define ISA_UNKNOWN_PORT (-1) #define ISA_UNKNOWN_IOMEM (-1) #define ISA_UNKNOWN_IOSIZ (0) #define ISA_UNKNOWN_IRQ (-1) #define ISA_UNKNOWN_DRQ (-1) #define ISA_UNKNOWN_DRQ2 (-1) /* * 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 */ const char *isa_intr_typename(int); /* * 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 void isa_set_slotcount(int); int isa_get_slotcount(void); #endif /* _DEV_ISA_ISAVAR_H_ */
