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0d484d249f
- An "at" hint now reserves a device name. - A new BUS_HINT_DEVICE_UNIT method is added to the bus interface. When determining the unit number of a device, this method is invoked to let the bus driver specify the unit of a device given a specific devclass. This is the only way a device can be given a name reserved via an "at" hint. - Implement BUS_HINT_DEVICE_UNIT() for the acpi(4) and isa(4) bus drivers. Both of these busses implement this by comparing the resources for a given hint device with the resources enumerated by ACPI/PnPBIOS and wire a unit if the hint resources are a subset of the "real" resources. - Use bus_hinted_children() for adding hinted devices on isa(4) busses now instead of doing it by hand. - Remove the unit kludging from sio(4) as it is no longer necessary. Prodding from: peter, imp OK'd by: marcel MFC after: 1 month
205 lines
5.9 KiB
C
205 lines
5.9 KiB
C
/*-
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* Copyright (c) 1998 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _ISA_ISAVAR_H_
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#define _ISA_ISAVAR_H_
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struct isa_config;
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struct isa_pnp_id;
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typedef void isa_config_cb(void *arg, struct isa_config *config, int enable);
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#include "isa_if.h"
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#include <isa/pnpvar.h>
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#ifdef _KERNEL
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/*
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* ISA devices are partially ordered. This is to ensure that hardwired
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* devices the BIOS tells us are there appear first, then speculative
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* devices that are sensitive to the probe order, then devices that
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* are hinted to be there, then the most flexible devices which support
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* the ISA bus PNP standard.
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*/
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#define ISA_ORDER_PNPBIOS 10 /* plug-and-play BIOS inflexible hardware */
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#define ISA_ORDER_SENSITIVE 20 /* legacy sensitive hardware */
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#define ISA_ORDER_SPECULATIVE 30 /* legacy non-sensitive hardware */
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#define ISA_ORDER_PNP 40 /* plug-and-play flexible hardware */
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/*
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* Limits on resources that we can manage
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*/
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#define ISA_NPORT 50
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#define ISA_NMEM 50
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#define ISA_NIRQ 50
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#define ISA_NDRQ 50
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/*
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* Limits on resources the hardware can actually handle
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*/
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#define ISA_PNP_NPORT 8
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#define ISA_PNP_NMEM 4
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#define ISA_PNP_NIRQ 2
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#define ISA_PNP_NDRQ 2
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#define ISADMA_READ 0x00100000
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#define ISADMA_WRITE 0
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#define ISADMA_RAW 0x00080000
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/*
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* Plug and play cards can support a range of resource
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* configurations. This structure is used by the isapnp parser to
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* inform the isa bus about the resource possibilities of the
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* device. Each different alternative should be supplied by calling
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* ISA_ADD_CONFIG().
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*/
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struct isa_range {
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u_int32_t ir_start;
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u_int32_t ir_end;
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u_int32_t ir_size;
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u_int32_t ir_align;
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};
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struct isa_config {
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struct isa_range ic_mem[ISA_NMEM];
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struct isa_range ic_port[ISA_NPORT];
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u_int32_t ic_irqmask[ISA_NIRQ];
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u_int32_t ic_drqmask[ISA_NDRQ];
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int ic_nmem;
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int ic_nport;
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int ic_nirq;
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int ic_ndrq;
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};
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/*
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* Used to build lists of IDs and description strings for PnP drivers.
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*/
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struct isa_pnp_id {
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u_int32_t ip_id;
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const char *ip_desc;
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};
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enum isa_device_ivars {
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ISA_IVAR_PORT,
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ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
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ISA_IVAR_PORT_1,
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ISA_IVAR_PORTSIZE,
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ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
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ISA_IVAR_PORTSIZE_1,
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ISA_IVAR_MADDR,
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ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
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ISA_IVAR_MADDR_1,
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ISA_IVAR_MEMSIZE,
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ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
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ISA_IVAR_MEMSIZE_1,
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ISA_IVAR_IRQ,
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ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
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ISA_IVAR_IRQ_1,
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ISA_IVAR_DRQ,
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ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
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ISA_IVAR_DRQ_1,
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ISA_IVAR_VENDORID,
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ISA_IVAR_SERIAL,
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ISA_IVAR_LOGICALID,
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ISA_IVAR_COMPATID,
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ISA_IVAR_CONFIGATTR,
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ISA_IVAR_PNP_CSN,
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ISA_IVAR_PNP_LDN,
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ISA_IVAR_PNPBIOS_HANDLE
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};
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/*
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* ISA_IVAR_CONFIGATTR bits
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*/
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#define ISACFGATTR_CANDISABLE (1 << 0) /* can be disabled */
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#define ISACFGATTR_DYNAMIC (1 << 1) /* dynamic configuration */
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#define ISACFGATTR_HINTS (1 << 3) /* source of config is hints */
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/*
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* Simplified accessors for isa devices
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*/
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#define ISA_ACCESSOR(var, ivar, type) \
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__BUS_ACCESSOR(isa, var, ISA, ivar, type)
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ISA_ACCESSOR(port, PORT, int)
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ISA_ACCESSOR(portsize, PORTSIZE, int)
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ISA_ACCESSOR(irq, IRQ, int)
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ISA_ACCESSOR(drq, DRQ, int)
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ISA_ACCESSOR(maddr, MADDR, int)
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ISA_ACCESSOR(msize, MEMSIZE, int)
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ISA_ACCESSOR(vendorid, VENDORID, int)
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ISA_ACCESSOR(serial, SERIAL, int)
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ISA_ACCESSOR(logicalid, LOGICALID, int)
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ISA_ACCESSOR(compatid, COMPATID, int)
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ISA_ACCESSOR(configattr, CONFIGATTR, int)
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ISA_ACCESSOR(pnp_csn, PNP_CSN, int)
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ISA_ACCESSOR(pnp_ldn, PNP_LDN, int)
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ISA_ACCESSOR(pnpbios_handle, PNPBIOS_HANDLE, int)
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/* Device class for ISA bridges. */
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extern devclass_t isab_devclass;
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extern intrmask_t isa_irq_pending(void);
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extern void isa_probe_children(device_t dev);
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void isa_dmacascade(int chan);
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void isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
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int isa_dma_init(int chan, u_int bouncebufsize, int flag);
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void isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
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int isa_dma_acquire(int chan);
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void isa_dma_release(int chan);
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int isa_dmastatus(int chan);
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int isa_dmastop(int chan);
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int isa_dmatc(int chan);
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#define isa_dmainit(chan, size) do { \
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if (isa_dma_init(chan, size, M_NOWAIT)) \
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printf("WARNING: isa_dma_init(%d, %ju) failed\n", \
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(int)(chan), (uintmax_t)(size)); \
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} while (0)
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void isa_hinted_child(device_t parent, const char *name, int unit);
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void isa_hint_device_unit(device_t bus, device_t child, const char *name,
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int *unitp);
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int isab_attach(device_t dev);
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#ifdef PC98
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#include <machine/bus.h>
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/*
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* Allocate discontinuous resources for ISA bus.
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*/
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struct resource *
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isa_alloc_resourcev(device_t child, int type, int *rid,
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bus_addr_t *res, bus_size_t count, u_int flags);
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int
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isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
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#endif
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#endif /* _KERNEL */
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#endif /* !_ISA_ISAVAR_H_ */
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