c2251260be
- 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
/*-
|
|
* Copyright (c) 1998 Doug Rabson
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _ISA_ISAVAR_H_
|
|
#define _ISA_ISAVAR_H_
|
|
|
|
struct isa_config;
|
|
struct isa_pnp_id;
|
|
typedef void isa_config_cb(void *arg, struct isa_config *config, int enable);
|
|
|
|
#include "isa_if.h"
|
|
#include <isa/pnpvar.h>
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* ISA devices are partially ordered. This is to ensure that hardwired
|
|
* devices the BIOS tells us are there appear first, then speculative
|
|
* devices that are sensitive to the probe order, then devices that
|
|
* are hinted to be there, then the most flexible devices which support
|
|
* the ISA bus PNP standard.
|
|
*/
|
|
#define ISA_ORDER_PNPBIOS 10 /* plug-and-play BIOS inflexible hardware */
|
|
#define ISA_ORDER_SENSITIVE 20 /* legacy sensitive hardware */
|
|
#define ISA_ORDER_SPECULATIVE 30 /* legacy non-sensitive hardware */
|
|
#define ISA_ORDER_PNP 40 /* plug-and-play flexible hardware */
|
|
|
|
/*
|
|
* Limits on resources that we can manage
|
|
*/
|
|
#define ISA_NPORT 50
|
|
#define ISA_NMEM 50
|
|
#define ISA_NIRQ 50
|
|
#define ISA_NDRQ 50
|
|
|
|
/*
|
|
* Limits on resources the hardware can actually handle
|
|
*/
|
|
#define ISA_PNP_NPORT 8
|
|
#define ISA_PNP_NMEM 4
|
|
#define ISA_PNP_NIRQ 2
|
|
#define ISA_PNP_NDRQ 2
|
|
|
|
#define ISADMA_READ 0x00100000
|
|
#define ISADMA_WRITE 0
|
|
#define ISADMA_RAW 0x00080000
|
|
/*
|
|
* Plug and play cards can support a range of resource
|
|
* configurations. This structure is used by the isapnp parser to
|
|
* inform the isa bus about the resource possibilities of the
|
|
* device. Each different alternative should be supplied by calling
|
|
* ISA_ADD_CONFIG().
|
|
*/
|
|
struct isa_range {
|
|
u_int32_t ir_start;
|
|
u_int32_t ir_end;
|
|
u_int32_t ir_size;
|
|
u_int32_t ir_align;
|
|
};
|
|
|
|
struct isa_config {
|
|
struct isa_range ic_mem[ISA_NMEM];
|
|
struct isa_range ic_port[ISA_NPORT];
|
|
u_int32_t ic_irqmask[ISA_NIRQ];
|
|
u_int32_t ic_drqmask[ISA_NDRQ];
|
|
int ic_nmem;
|
|
int ic_nport;
|
|
int ic_nirq;
|
|
int ic_ndrq;
|
|
};
|
|
|
|
/*
|
|
* Used to build lists of IDs and description strings for PnP drivers.
|
|
*/
|
|
struct isa_pnp_id {
|
|
u_int32_t ip_id;
|
|
const char *ip_desc;
|
|
};
|
|
|
|
enum isa_device_ivars {
|
|
ISA_IVAR_PORT,
|
|
ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
|
|
ISA_IVAR_PORT_1,
|
|
ISA_IVAR_PORTSIZE,
|
|
ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
|
|
ISA_IVAR_PORTSIZE_1,
|
|
ISA_IVAR_MADDR,
|
|
ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
|
|
ISA_IVAR_MADDR_1,
|
|
ISA_IVAR_MEMSIZE,
|
|
ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
|
|
ISA_IVAR_MEMSIZE_1,
|
|
ISA_IVAR_IRQ,
|
|
ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
|
|
ISA_IVAR_IRQ_1,
|
|
ISA_IVAR_DRQ,
|
|
ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
|
|
ISA_IVAR_DRQ_1,
|
|
ISA_IVAR_VENDORID,
|
|
ISA_IVAR_SERIAL,
|
|
ISA_IVAR_LOGICALID,
|
|
ISA_IVAR_COMPATID,
|
|
ISA_IVAR_CONFIGATTR,
|
|
ISA_IVAR_PNP_CSN,
|
|
ISA_IVAR_PNP_LDN,
|
|
ISA_IVAR_PNPBIOS_HANDLE
|
|
};
|
|
|
|
/*
|
|
* ISA_IVAR_CONFIGATTR bits
|
|
*/
|
|
#define ISACFGATTR_CANDISABLE (1 << 0) /* can be disabled */
|
|
#define ISACFGATTR_DYNAMIC (1 << 1) /* dynamic configuration */
|
|
#define ISACFGATTR_HINTS (1 << 3) /* source of config is hints */
|
|
|
|
/*
|
|
* Simplified accessors for isa devices
|
|
*/
|
|
#define ISA_ACCESSOR(var, ivar, type) \
|
|
__BUS_ACCESSOR(isa, var, ISA, ivar, type)
|
|
|
|
ISA_ACCESSOR(port, PORT, int)
|
|
ISA_ACCESSOR(portsize, PORTSIZE, int)
|
|
ISA_ACCESSOR(irq, IRQ, int)
|
|
ISA_ACCESSOR(drq, DRQ, int)
|
|
ISA_ACCESSOR(maddr, MADDR, int)
|
|
ISA_ACCESSOR(msize, MEMSIZE, int)
|
|
ISA_ACCESSOR(vendorid, VENDORID, int)
|
|
ISA_ACCESSOR(serial, SERIAL, int)
|
|
ISA_ACCESSOR(logicalid, LOGICALID, int)
|
|
ISA_ACCESSOR(compatid, COMPATID, int)
|
|
ISA_ACCESSOR(configattr, CONFIGATTR, int)
|
|
ISA_ACCESSOR(pnp_csn, PNP_CSN, int)
|
|
ISA_ACCESSOR(pnp_ldn, PNP_LDN, int)
|
|
ISA_ACCESSOR(pnpbios_handle, PNPBIOS_HANDLE, int)
|
|
|
|
/* Device class for ISA bridges. */
|
|
extern devclass_t isab_devclass;
|
|
|
|
extern intrmask_t isa_irq_pending(void);
|
|
extern void isa_probe_children(device_t dev);
|
|
|
|
void isa_dmacascade(int chan);
|
|
void isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
|
|
int isa_dma_init(int chan, u_int bouncebufsize, int flag);
|
|
void isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
|
|
int isa_dma_acquire(int chan);
|
|
void isa_dma_release(int chan);
|
|
int isa_dmastatus(int chan);
|
|
int isa_dmastop(int chan);
|
|
int isa_dmatc(int chan);
|
|
|
|
#define isa_dmainit(chan, size) do { \
|
|
if (isa_dma_init(chan, size, M_NOWAIT)) \
|
|
printf("WARNING: isa_dma_init(%d, %ju) failed\n", \
|
|
(int)(chan), (uintmax_t)(size)); \
|
|
} while (0)
|
|
|
|
void isa_hinted_child(device_t parent, const char *name, int unit);
|
|
void isa_hint_device_unit(device_t bus, device_t child, const char *name,
|
|
int *unitp);
|
|
int isab_attach(device_t dev);
|
|
|
|
#ifdef PC98
|
|
#include <machine/bus.h>
|
|
|
|
/*
|
|
* Allocate discontinuous resources for ISA bus.
|
|
*/
|
|
struct resource *
|
|
isa_alloc_resourcev(device_t child, int type, int *rid,
|
|
bus_addr_t *res, bus_size_t count, u_int flags);
|
|
int
|
|
isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
|
|
#endif
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_ISA_ISAVAR_H_ */
|