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freebsd/sys/pci/pcivar.h
Peter Wemm b6c8407840 Get out the roto-rooter and clean up the abuse of nexus ivars by the 
i386/isa/pcibus.c.  This gets -current running again on multiple host->pci
machines after the most recent nexus commits.  I had discussed this with
Mike Smith, but ended up doing it slightly differently to what we
discussed as it turned out cleaner this way.  Mike was suggesting creating
a new resource (SYS_RES_PCIBUS) or something and using *_[gs]et_resource(),
but IMHO that wasn't ideal as SYS_RES_* is meant to be a global platform
property, not a quirk of a given implementation.  This does use the ivar
methods but does so properly.  It also now prints the physical pci bus that
a host->pci bridge (pcib) corresponds to.
2000-09-28 00:37:32 +00:00

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/*
* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
* 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 unmodified, 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 ``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 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 _PCIVAR_H_
#define _PCIVAR_H_
#include <sys/queue.h>
/* some PCI bus constants */
#define PCI_BUSMAX 255 /* highest supported bus number */
#define PCI_SLOTMAX 31 /* highest supported slot number */
#define PCI_FUNCMAX 7 /* highest supported function number */
#define PCI_REGMAX 255 /* highest supported config register addr. */
#define PCI_MAXMAPS_0 6 /* max. no. of memory/port maps */
#define PCI_MAXMAPS_1 2 /* max. no. of maps for PCI to PCI bridge */
#define PCI_MAXMAPS_2 1 /* max. no. of maps for CardBus bridge */
/* pci_addr_t covers this system's PCI bus address space: 32 or 64 bit */
#ifdef PCI_A64
typedef u_int64_t pci_addr_t; /* u_int64_t for system with 64bit addresses */
#else
typedef u_int32_t pci_addr_t; /* u_int64_t for system with 64bit addresses */
#endif
/* config header information common to all header types */
typedef struct pcicfg {
struct device *dev; /* device which owns this */
void *hdrspec; /* pointer to header type specific data */
u_int16_t subvendor; /* card vendor ID */
u_int16_t subdevice; /* card device ID, assigned by card vendor */
u_int16_t vendor; /* chip vendor ID */
u_int16_t device; /* chip device ID, assigned by chip vendor */
u_int16_t cmdreg; /* disable/enable chip and PCI options */
u_int16_t statreg; /* supported PCI features and error state */
u_int8_t baseclass; /* chip PCI class */
u_int8_t subclass; /* chip PCI subclass */
u_int8_t progif; /* chip PCI programming interface */
u_int8_t revid; /* chip revision ID */
u_int8_t hdrtype; /* chip config header type */
u_int8_t cachelnsz; /* cache line size in 4byte units */
u_int8_t intpin; /* PCI interrupt pin */
u_int8_t intline; /* interrupt line (IRQ for PC arch) */
u_int8_t mingnt; /* min. useful bus grant time in 250ns units */
u_int8_t maxlat; /* max. tolerated bus grant latency in 250ns */
u_int8_t lattimer; /* latency timer in units of 30ns bus cycles */
u_int8_t mfdev; /* multi-function device (from hdrtype reg) */
u_int8_t nummaps; /* actual number of PCI maps used */
u_int8_t bus; /* config space bus address */
u_int8_t slot; /* config space slot address */
u_int8_t func; /* config space function number */
u_int8_t secondarybus; /* bus on secondary side of bridge, if any */
u_int8_t subordinatebus; /* topmost bus number behind bridge, if any */
} pcicfgregs;
/* additional type 1 device config header information (PCI to PCI bridge) */
#ifdef PCI_A64
#define PCI_PPBMEMBASE(h,l) ((((pci_addr_t)(h) << 32) + ((l)<<16)) & ~0xfffff)
#define PCI_PPBMEMLIMIT(h,l) ((((pci_addr_t)(h) << 32) + ((l)<<16)) | 0xfffff)
#else
#define PCI_PPBMEMBASE(h,l) (((l)<<16) & ~0xfffff)
#define PCI_PPBMEMLIMIT(h,l) (((l)<<16) | 0xfffff)
#endif /* PCI_A64 */
#define PCI_PPBIOBASE(h,l) ((((h)<<16) + ((l)<<8)) & ~0xfff)
#define PCI_PPBIOLIMIT(h,l) ((((h)<<16) + ((l)<<8)) | 0xfff)
typedef struct {
pci_addr_t pmembase; /* base address of prefetchable memory */
pci_addr_t pmemlimit; /* topmost address of prefetchable memory */
u_int32_t membase; /* base address of memory window */
u_int32_t memlimit; /* topmost address of memory window */
u_int32_t iobase; /* base address of port window */
u_int32_t iolimit; /* topmost address of port window */
u_int16_t secstat; /* secondary bus status register */
u_int16_t bridgectl; /* bridge control register */
u_int8_t seclat; /* CardBus latency timer */
} pcih1cfgregs;
/* additional type 2 device config header information (CardBus bridge) */
typedef struct {
u_int32_t membase0; /* base address of memory window */
u_int32_t memlimit0; /* topmost address of memory window */
u_int32_t membase1; /* base address of memory window */
u_int32_t memlimit1; /* topmost address of memory window */
u_int32_t iobase0; /* base address of port window */
u_int32_t iolimit0; /* topmost address of port window */
u_int32_t iobase1; /* base address of port window */
u_int32_t iolimit1; /* topmost address of port window */
u_int32_t pccardif; /* PC Card 16bit IF legacy more base addr. */
u_int16_t secstat; /* secondary bus status register */
u_int16_t bridgectl; /* bridge control register */
u_int8_t seclat; /* CardBus latency timer */
} pcih2cfgregs;
extern u_int32_t pci_numdevs;
/* Only if the prerequisites are present */
#if defined(_SYS_BUS_H_) && defined(_SYS_PCIIO_H_)
struct pci_devinfo {
STAILQ_ENTRY(pci_devinfo) pci_links;
struct resource_list resources;
pcicfgregs cfg;
struct pci_conf conf;
};
#endif
/* externally visible functions */
const char *pci_ata_match(struct device *dev);
const char *pci_usb_match(struct device *dev);
const char *pci_vga_match(struct device *dev);
const char *pci_chip_match(struct device *dev);
/* low level PCI config register functions provided by pcibus.c */
int pci_cfgread (pcicfgregs *cfg, int reg, int bytes);
void pci_cfgwrite (pcicfgregs *cfg, int reg, int data, int bytes);
#ifdef __alpha__
vm_offset_t pci_cvt_to_dense (vm_offset_t);
vm_offset_t pci_cvt_to_bwx (vm_offset_t);
#endif /* __alpha__ */
/* low level devlist operations for the 2.2 compatibility code in pci.c */
pcicfgregs * pci_devlist_get_parent(pcicfgregs *cfg);
#ifdef _SYS_BUS_H_
#include "pci_if.h"
/*
* Define pci-specific resource flags for accessing memory via dense
* or bwx memory spaces. These flags are ignored on i386.
*/
#define PCI_RF_DENSE 0x10000
#define PCI_RF_BWX 0x20000
enum pci_device_ivars {
PCI_IVAR_SUBVENDOR,
PCI_IVAR_SUBDEVICE,
PCI_IVAR_VENDOR,
PCI_IVAR_DEVICE,
PCI_IVAR_DEVID,
PCI_IVAR_CLASS,
PCI_IVAR_SUBCLASS,
PCI_IVAR_PROGIF,
PCI_IVAR_REVID,
PCI_IVAR_INTPIN,
PCI_IVAR_IRQ,
PCI_IVAR_BUS,
PCI_IVAR_SLOT,
PCI_IVAR_FUNCTION,
PCI_IVAR_SECONDARYBUS,
PCI_IVAR_SUBORDINATEBUS,
};
/*
* Simplified accessors for pci devices
*/
#define PCI_ACCESSOR(A, B, T) \
\
static __inline T pci_get_ ## A(device_t dev) \
{ \
uintptr_t v; \
BUS_READ_IVAR(device_get_parent(dev), dev, PCI_IVAR_ ## B, &v); \
return (T) v; \
} \
\
static __inline void pci_set_ ## A(device_t dev, T t) \
{ \
uintptr_t v = (uintptr_t) t; \
BUS_WRITE_IVAR(device_get_parent(dev), dev, PCI_IVAR_ ## B, v); \
}
PCI_ACCESSOR(subvendor, SUBVENDOR, u_int16_t)
PCI_ACCESSOR(subdevice, SUBDEVICE, u_int16_t)
PCI_ACCESSOR(vendor, VENDOR, u_int16_t)
PCI_ACCESSOR(device, DEVICE, u_int16_t)
PCI_ACCESSOR(devid, DEVID, u_int32_t)
PCI_ACCESSOR(class, CLASS, u_int8_t)
PCI_ACCESSOR(subclass, SUBCLASS, u_int8_t)
PCI_ACCESSOR(progif, PROGIF, u_int8_t)
PCI_ACCESSOR(revid, REVID, u_int8_t)
PCI_ACCESSOR(intpin, INTPIN, u_int8_t)
PCI_ACCESSOR(irq, IRQ, u_int8_t)
PCI_ACCESSOR(bus, BUS, u_int8_t)
PCI_ACCESSOR(slot, SLOT, u_int8_t)
PCI_ACCESSOR(function, FUNCTION, u_int8_t)
PCI_ACCESSOR(secondarybus, SECONDARYBUS, u_int8_t)
PCI_ACCESSOR(subordinatebus, SUBORDINATEBUS, u_int8_t)
#undef PCI_ACCESSOR
static __inline u_int32_t
pci_read_config(device_t dev, int reg, int width)
{
return PCI_READ_CONFIG(device_get_parent(dev), dev, reg, width);
}
static __inline void
pci_write_config(device_t dev, int reg, u_int32_t val, int width)
{
PCI_WRITE_CONFIG(device_get_parent(dev), dev, reg, val, width);
}
/*
* Ivars for pci bridges.
*/
/*typedef enum pci_device_ivars pcib_device_ivars;*/
enum pcib_device_ivars {
PCIB_IVAR_BUS
};
#define PCIB_ACCESSOR(A, B, T) \
\
static __inline T pcib_get_ ## A(device_t dev) \
{ \
uintptr_t v; \
BUS_READ_IVAR(device_get_parent(dev), dev, PCIB_IVAR_ ## B, &v); \
return (T) v; \
} \
\
static __inline void pcib_set_ ## A(device_t dev, T t) \
{ \
uintptr_t v = (uintptr_t) t; \
BUS_WRITE_IVAR(device_get_parent(dev), dev, PCIB_IVAR_ ## B, v); \
}
PCIB_ACCESSOR(bus, BUS, u_int32_t)
#undef PCIB_ACCESSOR
#endif
/* for compatibility to FreeBSD-2.2 and 3.x versions of PCI code */
#if defined(_KERNEL) && !defined(KLD_MODULE)
#include "opt_compat_oldpci.h"
#endif
#ifdef COMPAT_OLDPCI
/* all this is going some day */
typedef pcicfgregs *pcici_t;
typedef unsigned pcidi_t;
typedef void pci_inthand_t(void *arg);
#define pci_max_burst_len (3)
/* just copied from old PCI code for now ... */
struct pci_device {
char* pd_name;
const char* (*pd_probe ) (pcici_t tag, pcidi_t type);
void (*pd_attach) (pcici_t tag, int unit);
u_long *pd_count;
int (*pd_shutdown) (int, int);
};
#ifdef __i386__
typedef u_short pci_port_t;
#else
typedef u_int pci_port_t;
#endif
u_long pci_conf_read (pcici_t tag, u_long reg);
void pci_conf_write (pcici_t tag, u_long reg, u_long data);
int pci_map_port (pcici_t tag, u_long reg, pci_port_t* pa);
int pci_map_mem (pcici_t tag, u_long reg, vm_offset_t* va, vm_offset_t* pa);
int pci_map_int (pcici_t tag, pci_inthand_t *handler, void *arg,
intrmask_t *maskptr);
int pci_map_int_right(pcici_t cfg, pci_inthand_t *handler, void *arg,
intrmask_t *maskptr, u_int flags);
int pci_unmap_int (pcici_t tag);
pcici_t pci_get_parent_from_tag(pcici_t tag);
int pci_get_bus_from_tag(pcici_t tag);
struct module;
int compat_pci_handler (struct module *, int, void *);
#define COMPAT_PCI_DRIVER(name, pcidata) \
static moduledata_t name##_mod = { \
#name, \
compat_pci_handler, \
&pcidata \
}; \
DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_ANY)
#endif /* COMPAT_OLDPCI */
#endif /* _PCIVAR_H_ */
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