pnpio.h

mgcp协议源代码。支持多种编码：g711

/*
 *  ISA Plug & Play support
 *  Copyright (c) by Jaroslav Kysela <[e-mail]>
 *
 *  Modified by Ed Okerson <[e-mail]> to work with the 2.2.x
 *  series of Linux kernels. 11/17/99
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *      
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

/*
 *  This file adds all the things that exist in Linux 2.3.28 that are used
 *  by the isapnp code, but do not exist in Linux 2.2.x.  To avoid
 *  trashing the 2.2.x pci_dev and pci_bus structs, I renamed them here to
 *  pnp_dev and pnp_bus for the use of this code.  Drivers that use these
 *  structs shoud use compiler conditionals to determine which name to use
 *  based on the Linux kernel version the module is being built for.
 *
 */

#define DEVICE_COUNT_COMPATIBLE   4
#define DEVICE_COUNT_IRQ        2
#define DEVICE_COUNT_DMA        2
#define DEVICE_COUNT_RESOURCE   12

struct resource {
	const char *name;
	unsigned long start, end;
	unsigned long flags;
	struct resource *parent, *sibling, *child;
};

/*
 * IO resources have these defined flags.
 */
#define IORESOURCE_BITS		0x000000ff	/* Bus-specific bits */

#define IORESOURCE_IO		0x00000100	/* Resource type */
#define IORESOURCE_MEM		0x00000200
#define IORESOURCE_IRQ		0x00000400
#define IORESOURCE_DMA		0x00000800

#define IORESOURCE_PREFETCH	0x00001000	/* No side effects */
#define IORESOURCE_READONLY	0x00002000
#define IORESOURCE_CACHEABLE	0x00004000
#define IORESOURCE_RANGELENGTH	0x00008000
#define IORESOURCE_SHADOWABLE	0x00010000

#define IORESOURCE_UNSET	0x20000000
#define IORESOURCE_AUTO		0x40000000
#define IORESOURCE_BUSY		0x80000000	/* Driver has marked this resource busy */

/* ISA PnP IRQ specific bits (IORESOURCE_BITS) */
#define IORESOURCE_IRQ_HIGHEDGE		(1<<0)
#define IORESOURCE_IRQ_LOWEDGE		(1<<1)
#define IORESOURCE_IRQ_HIGHLEVEL	(1<<2)
#define IORESOURCE_IRQ_LOWLEVEL		(1<<3)

/* ISA PnP DMA specific bits (IORESOURCE_BITS) */
#define IORESOURCE_DMA_TYPE_MASK	(3<<0)
#define IORESOURCE_DMA_8BIT		(0<<0)
#define IORESOURCE_DMA_8AND16BIT	(1<<0)
#define IORESOURCE_DMA_16BIT		(2<<0)

#define IORESOURCE_DMA_MASTER		(1<<2)
#define IORESOURCE_DMA_BYTE		(1<<3)
#define IORESOURCE_DMA_WORD		(1<<4)

#define IORESOURCE_DMA_SPEED_MASK	(3<<6)
#define IORESOURCE_DMA_COMPATIBLE	(0<<6)
#define IORESOURCE_DMA_TYPEA		(1<<6)
#define IORESOURCE_DMA_TYPEB		(2<<6)
#define IORESOURCE_DMA_TYPEF		(3<<6)

/* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */
#define IORESOURCE_MEM_WRITEABLE	(1<<0)	/* dup: IORESOURCE_READONLY */
#define IORESOURCE_MEM_CACHEABLE	(1<<1)	/* dup: IORESOURCE_CACHEABLE */
#define IORESOURCE_MEM_RANGELENGTH	(1<<2)	/* dup: IORESOURCE_RANGELENGTH */
#define IORESOURCE_MEM_TYPE_MASK	(3<<3)
#define IORESOURCE_MEM_8BIT		(0<<3)
#define IORESOURCE_MEM_16BIT		(1<<3)
#define IORESOURCE_MEM_8AND16BIT	(2<<3)
#define IORESOURCE_MEM_SHADOWABLE	(1<<5)	/* dup: IORESOURCE_SHADOWABLE */
#define IORESOURCE_MEM_EXPANSIONROM	(1<<6)

/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
extern struct resource ioport_resource;
extern struct resource iomem_resource;

extern int get_resource_list(struct resource *, char *buf, int size);

extern int request_resource(struct resource *root, struct resource *new);
extern int release_resource(struct resource *new);
extern int allocate_resource(struct resource *root, struct resource *new,
			     unsigned long size,
			     unsigned long min, unsigned long max,
			     unsigned long align);

/* Convenience shorthand with allocation */
//#define request_region(start,n,name)	__request_region(&ioport_resource, (start), (n), (name))
#define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name))

extern struct resource * __request_region(struct resource *, unsigned long start, unsigned long n, const char *name);

/*
 * This is actually the new pci_dev structure, but we can't use that name
 * without stomping on the old one the kernel still uses.
 */

struct pnp_dev {
  int active;                     /* device is active */
  int ro;                         /* Read/Only */

  struct pnp_bus  *bus;           /* bus this device is on */
  struct pnp_dev  *sibling;       /* next device on this bus */
  struct pnp_dev  *next;          /* chain of all devices */
   
  void            *sysdata;       /* hook for sys-specific extension */   
  struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */

  unsigned int    devfn;          /* encoded device & function index */
  unsigned short  vendor;
  unsigned short  device;
  unsigned short  subsystem_vendor;
  unsigned short  subsystem_device;
  unsigned int    class;          /* 3 bytes: (base,sub,prog-if) */
  u8    hdr_type;       /* PCI header type (`multi' flag masked out) */
  u8    rom_base_reg;   /* Which config register controls the ROM */
           
  unsigned short  regs;
        
  /* device is compatible with these IDs */
  unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE];
  unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE];
        
 /*
  * Instead of touching interrupt line and base address registers
  * directly, use the values stored here. They might be different!
  */
  unsigned int    irq;   
  struct resource resource[DEVICE_COUNT_RESOURCE];  /* I/O and memory 
                                                  regions + expansion ROMs */
  struct resource dma_resource[DEVICE_COUNT_DMA];
  struct resource irq_resource[DEVICE_COUNT_IRQ];
        
  char            name[48];       /* Device name */
  char            slot_name[8];   /* Slot name */
        
  int (*prepare)(struct pnp_dev *dev); 
  int (*activate)(struct pnp_dev *dev);  
  int (*deactivate)(struct pnp_dev *dev);
};      

/*
 * This is actually the new pci_bus structure, but we can't use that name
 * without stomping on the old one the kernel still uses.
 */

struct pnp_bus {
  struct pnp_bus  *parent;        /* parent bus this bridge is on */
  struct pnp_bus  *children;      /* chain of P2P bridges on this bus */
  struct pnp_bus  *next;          /* chain of all PCI buses */
  struct pci_ops  *ops;           /* configuration access functions */

  struct pnp_dev  *self;          /* bridge device as seen by parent */
  struct pnp_dev  *devices;       /* devices behind this bridge */
  struct resource *resource[4];   /* address space routed to this bus */  
 
  void            *sysdata;       /* hook for sys-specific extension */
  struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
        
  unsigned char   number;         /* bus number */
  unsigned char   primary;        /* number of primary bridge */
  unsigned char   secondary;      /* number of secondary bridge */
  unsigned char   subordinate;    /* max number of subordinate buses */

  char            name[48];
  unsigned short  vendor;
  unsigned short  device;
  unsigned int    serial;         /* serial number */
  unsigned char   pnpver;         /* Plug & Play version */
  unsigned char   productver;     /* product version */
  unsigned char   checksum;       /* if zero - checksum passed */ 
  unsigned char   pad1;
};
        
extern struct pnp_bus   *pnp_root;      /* root bus */
extern struct pnp_dev   *pnp_devices;   /* list of all devices */