FreeBSD-5.3/sys/dev/pci/pcivar.h
/*
* 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: src/sys/dev/pci/pcivar.h,v 1.64 2004/04/07 20:45:58 imp Exp $
*
*/
#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 uint64_t pci_addr_t; /* uint64_t for system with 64bit addresses */
#else
typedef uint32_t pci_addr_t; /* uint64_t for system with 64bit addresses */
#endif
/* Interesting values for PCI power management */
struct pcicfg_pp {
uint16_t pp_cap; /* PCI power management capabilities */
uint8_t pp_status; /* config space address of PCI power status reg */
uint8_t pp_pmcsr; /* config space address of PMCSR reg */
uint8_t pp_data; /* config space address of PCI power data reg */
};
/* Interesting values for PCI MSI */
struct pcicfg_msi {
uint16_t msi_ctrl; /* Message Control */
uint8_t msi_msgnum; /* Number of messages */
uint16_t msi_data; /* Location of MSI data word */
};
/* config header information common to all header types */
typedef struct pcicfg {
struct device *dev; /* device which owns this */
uint32_t bar[PCI_MAXMAPS_0]; /* BARs */
uint32_t bios; /* BIOS mapping */
uint16_t subvendor; /* card vendor ID */
uint16_t subdevice; /* card device ID, assigned by card vendor */
uint16_t vendor; /* chip vendor ID */
uint16_t device; /* chip device ID, assigned by chip vendor */
uint16_t cmdreg; /* disable/enable chip and PCI options */
uint16_t statreg; /* supported PCI features and error state */
uint8_t baseclass; /* chip PCI class */
uint8_t subclass; /* chip PCI subclass */
uint8_t progif; /* chip PCI programming interface */
uint8_t revid; /* chip revision ID */
uint8_t hdrtype; /* chip config header type */
uint8_t cachelnsz; /* cache line size in 4byte units */
uint8_t intpin; /* PCI interrupt pin */
uint8_t intline; /* interrupt line (IRQ for PC arch) */
uint8_t mingnt; /* min. useful bus grant time in 250ns units */
uint8_t maxlat; /* max. tolerated bus grant latency in 250ns */
uint8_t lattimer; /* latency timer in units of 30ns bus cycles */
uint8_t mfdev; /* multi-function device (from hdrtype reg) */
uint8_t nummaps; /* actual number of PCI maps used */
uint8_t bus; /* config space bus address */
uint8_t slot; /* config space slot address */
uint8_t func; /* config space function number */
struct pcicfg_pp pp; /* pci power management */
struct pcicfg_msi msi; /* pci msi */
} 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 */
uint32_t membase; /* base address of memory window */
uint32_t memlimit; /* topmost address of memory window */
uint32_t iobase; /* base address of port window */
uint32_t iolimit; /* topmost address of port window */
uint16_t secstat; /* secondary bus status register */
uint16_t bridgectl; /* bridge control register */
uint8_t seclat; /* CardBus latency timer */
} pcih1cfgregs;
/* additional type 2 device config header information (CardBus bridge) */
typedef struct {
uint32_t membase0; /* base address of memory window */
uint32_t memlimit0; /* topmost address of memory window */
uint32_t membase1; /* base address of memory window */
uint32_t memlimit1; /* topmost address of memory window */
uint32_t iobase0; /* base address of port window */
uint32_t iolimit0; /* topmost address of port window */
uint32_t iobase1; /* base address of port window */
uint32_t iolimit1; /* topmost address of port window */
uint32_t pccardif; /* PC Card 16bit IF legacy more base addr. */
uint16_t secstat; /* secondary bus status register */
uint16_t bridgectl; /* bridge control register */
uint8_t seclat; /* CardBus latency timer */
} pcih2cfgregs;
extern uint32_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
#ifdef __alpha__
vm_offset_t pci_cvt_to_dense (vm_offset_t);
vm_offset_t pci_cvt_to_bwx (vm_offset_t);
#endif /* __alpha__ */
#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_ETHADDR,
};
/*
* Simplified accessors for pci devices
*/
#define PCI_ACCESSOR(var, ivar, type) \
__BUS_ACCESSOR(pci, var, PCI, ivar, type)
PCI_ACCESSOR(subvendor, SUBVENDOR, uint16_t)
PCI_ACCESSOR(subdevice, SUBDEVICE, uint16_t)
PCI_ACCESSOR(vendor, VENDOR, uint16_t)
PCI_ACCESSOR(device, DEVICE, uint16_t)
PCI_ACCESSOR(devid, DEVID, uint32_t)
PCI_ACCESSOR(class, CLASS, uint8_t)
PCI_ACCESSOR(subclass, SUBCLASS, uint8_t)
PCI_ACCESSOR(progif, PROGIF, uint8_t)
PCI_ACCESSOR(revid, REVID, uint8_t)
PCI_ACCESSOR(intpin, INTPIN, uint8_t)
PCI_ACCESSOR(irq, IRQ, uint8_t)
PCI_ACCESSOR(bus, BUS, uint8_t)
PCI_ACCESSOR(slot, SLOT, uint8_t)
PCI_ACCESSOR(function, FUNCTION, uint8_t)
PCI_ACCESSOR(ether, ETHADDR, uint8_t *)
#undef PCI_ACCESSOR
/*
* Operations on configuration space.
*/
static __inline uint32_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, uint32_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(var, ivar, type) \
__BUS_ACCESSOR(pcib, var, PCIB, ivar, type)
PCIB_ACCESSOR(bus, BUS, uint32_t)
#undef PCIB_ACCESSOR
/*
* PCI interrupt validation. Invalid interrupt values such as 0 or 128
* on i386 or other platforms should be mapped out in the MD pcireadconf
* code and not here, since the only MI invalid IRQ is 255.
*/
#define PCI_INVALID_IRQ 255
#define PCI_INTERRUPT_VALID(x) ((x) != PCI_INVALID_IRQ)
/*
* Convenience functions.
*
* These should be used in preference to manually manipulating
* configuration space.
*/
static __inline int
pci_enable_busmaster(device_t dev)
{
return(PCI_ENABLE_BUSMASTER(device_get_parent(dev), dev));
}
static __inline int
pci_disable_busmaster(device_t dev)
{
return(PCI_DISABLE_BUSMASTER(device_get_parent(dev), dev));
}
static __inline int
pci_enable_io(device_t dev, int space)
{
return(PCI_ENABLE_IO(device_get_parent(dev), dev, space));
}
static __inline int
pci_disable_io(device_t dev, int space)
{
return(PCI_DISABLE_IO(device_get_parent(dev), dev, space));
}
/*
* PCI power states are as defined by ACPI:
*
* D0 State in which device is on and running. It is receiving full
* power from the system and delivering full functionality to the user.
* D1 Class-specific low-power state in which device context may or may not
* be lost. Buses in D1 cannot do anything to the bus that would force
* devices on that bus to loose context.
* D2 Class-specific low-power state in which device context may or may
* not be lost. Attains greater power savings than D1. Buses in D2
* can cause devices on that bus to loose some context. Devices in D2
* must be prepared for the bus to be in D2 or higher.
* D3 State in which the device is off and not running. Device context is
* lost. Power can be removed from the device.
*/
#define PCI_POWERSTATE_D0 0
#define PCI_POWERSTATE_D1 1
#define PCI_POWERSTATE_D2 2
#define PCI_POWERSTATE_D3 3
#define PCI_POWERSTATE_UNKNOWN -1
static __inline int
pci_set_powerstate(device_t dev, int state)
{
return PCI_SET_POWERSTATE(device_get_parent(dev), dev, state);
}
static __inline int
pci_get_powerstate(device_t dev)
{
return PCI_GET_POWERSTATE(device_get_parent(dev), dev);
}
device_t pci_find_bsf(uint8_t, uint8_t, uint8_t);
device_t pci_find_device(uint16_t, uint16_t);
#endif /* _SYS_BUS_H_ */
/*
* cdev switch for control device, initialised in generic PCI code
*/
extern struct cdevsw pcicdev;
/*
* List of all PCI devices, generation count for the list.
*/
STAILQ_HEAD(devlist, pci_devinfo);
extern struct devlist pci_devq;
extern uint32_t pci_generation;
#endif /* _PCIVAR_H_ */