cregit-Linux how code gets into the kernel

Release 4.11 drivers/pnp/pnpbios/pnpbios.h

/*
 * pnpbios.h - contains local definitions
 */

/*
 * Include file for the interface to a PnP BIOS
 *
 * Original BIOS code (C) 1998 Christian Schmidt (chr.schmidt@tu-bs.de)
 * PnP handler parts (c) 1998 Tom Lees <tom@lpsg.demon.co.uk>
 * Minor reorganizations by David Hinds <dahinds@users.sourceforge.net>
 *
 * 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, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 * Return codes
 */

#define PNP_SUCCESS                     0x00

#define PNP_NOT_SET_STATICALLY          0x7f

#define PNP_UNKNOWN_FUNCTION            0x81

#define PNP_FUNCTION_NOT_SUPPORTED      0x82

#define PNP_INVALID_HANDLE              0x83

#define PNP_BAD_PARAMETER               0x84

#define PNP_SET_FAILED                  0x85

#define PNP_EVENTS_NOT_PENDING          0x86

#define PNP_SYSTEM_NOT_DOCKED           0x87

#define PNP_NO_ISA_PNP_CARDS            0x88

#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89

#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a

#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b

#define PNP_BUFFER_TOO_SMALL            0x8c

#define PNP_USE_ESCD_SUPPORT            0x8d

#define PNP_MESSAGE_NOT_SUPPORTED       0x8e

#define PNP_HARDWARE_ERROR              0x8f


#define ESCD_SUCCESS                    0x00

#define ESCD_IO_ERROR_READING           0x55

#define ESCD_INVALID                    0x56

#define ESCD_BUFFER_TOO_SMALL           0x59

#define ESCD_NVRAM_TOO_SMALL            0x5a

#define ESCD_FUNCTION_NOT_SUPPORTED     0x81

/*
 * Events that can be received by "get event"
 */

#define PNPEV_ABOUT_TO_CHANGE_CONFIG	0x0001

#define PNPEV_DOCK_CHANGED		0x0002

#define PNPEV_SYSTEM_DEVICE_CHANGED	0x0003

#define PNPEV_CONFIG_CHANGED_FAILED	0x0004

#define PNPEV_UNKNOWN_SYSTEM_EVENT	0xffff
/* 0x8000 through 0xfffe are OEM defined */

/*
 * Messages that should be sent through "send message"
 */

#define PNPMSG_OK			0x00

#define PNPMSG_ABORT			0x01

#define PNPMSG_UNDOCK_DEFAULT_ACTION	0x40

#define PNPMSG_POWER_OFF		0x41

#define PNPMSG_PNP_OS_ACTIVE		0x42

#define PNPMSG_PNP_OS_INACTIVE		0x43

/*
 * Plug and Play BIOS flags
 */

#define PNPBIOS_NO_DISABLE		0x0001

#define PNPBIOS_NO_CONFIG		0x0002

#define PNPBIOS_OUTPUT			0x0004

#define PNPBIOS_INPUT			0x0008

#define PNPBIOS_BOOTABLE		0x0010

#define PNPBIOS_DOCK			0x0020

#define PNPBIOS_REMOVABLE		0x0040

#define pnpbios_is_static(x) (((x)->flags & 0x0100) == 0x0000)

#define pnpbios_is_dynamic(x) ((x)->flags & 0x0080)

/*
 * Function Parameters
 */

#define PNPMODE_STATIC 1

#define PNPMODE_DYNAMIC 0

/* 0x8000 through 0xffff are OEM defined */

#pragma pack(1)

struct pnp_dev_node_info {
	
__u16 no_nodes;
	
__u16 max_node_size;
};

struct pnp_docking_station_info {
	
__u32 location_id;
	
__u32 serial;
	
__u16 capabilities;
};

struct pnp_isa_config_struc {
	
__u8 revision;
	
__u8 no_csns;
	
__u16 isa_rd_data_port;
	
__u16 reserved;
};

struct escd_info_struc {
	
__u16 min_escd_write_size;
	
__u16 escd_size;
	
__u32 nv_storage_base;
};

struct pnp_bios_node {
	
__u16 size;
	
__u8 handle;
	
__u32 eisa_id;
	
__u8 type_code[3];
	
__u16 flags;
	
__u8 data[0];
};
#pragma pack()

/* non-exported */
extern struct pnp_dev_node_info node_info;

extern int pnp_bios_dev_node_info(struct pnp_dev_node_info *data);
extern int pnp_bios_get_dev_node(u8 *nodenum, char config,
				 struct pnp_bios_node *data);
extern int pnp_bios_set_dev_node(u8 nodenum, char config,
				 struct pnp_bios_node *data);
extern int pnp_bios_get_stat_res(char *info);
extern int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data);
extern int pnp_bios_escd_info(struct escd_info_struc *data);
extern int pnp_bios_read_escd(char *data, u32 nvram_base);
extern int pnp_bios_dock_station_info(struct pnp_docking_station_info *data);

#pragma pack(1)

union pnp_bios_install_struct {
	struct {
		
u32 signature;    /* "$PnP" */
		
u8 version;	  /* in BCD */
		
u8 length;	  /* length in bytes, currently 21h */
		
u16 control;	  /* system capabilities */
		
u8 checksum;	  /* all bytes must add up to 0 */

		
u32 eventflag;    /* phys. address of the event flag */
		
u16 rmoffset;     /* real mode entry point */
		
u16 rmcseg;
		
u16 pm16offset;   /* 16 bit protected mode entry */
		
u32 pm16cseg;
		
u32 deviceID;	  /* EISA encoded system ID or 0 */
		
u16 rmdseg;	  /* real mode data segment */
		
u32 pm16dseg;	  /* 16 bit pm data segment base */
	} 
fields;
	
char chars[0x21];	  /* To calculate the checksum */
};
#pragma pack()

extern int pnp_bios_present(void);
extern int  pnpbios_dont_use_current_config;

extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node);
extern int pnpbios_read_resources_from_node(struct pnp_dev *dev, struct pnp_bios_node *node);
extern int pnpbios_write_resources_to_node(struct pnp_dev *dev, struct pnp_bios_node *node);
extern void pnpid32_to_pnpid(u32 id, char *str);

extern void pnpbios_print_status(const char * module, u16 status);
extern void pnpbios_calls_init(union pnp_bios_install_struct * header);

#ifdef CONFIG_PNPBIOS_PROC_FS
extern int pnpbios_interface_attach_device(struct pnp_bios_node * node);
extern int pnpbios_proc_init (void);
extern void pnpbios_proc_exit (void);
#else

static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; }

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Adam Belay15100.00%1100.00%
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static inline int pnpbios_proc_init (void) { return 0; }

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static inline void pnpbios_proc_exit (void) { ; }

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#endif /* CONFIG_PNPBIOS_PROC_FS */

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Björn Helgaas39462.64%225.00%
Adam Belay23537.36%675.00%
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