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#ifndef _PPC64_RTAS_H

#define _PPC64_RTAS_H

#include <linux/spinlock.h>

#include <asm/page.h>

/*

 * Definitions for talking to the RTAS on CHRP machines.

 *

 * Copyright (C) 2001 Peter Bergner

 * Copyright (C) 2001 PPC 64 Team, IBM Corp

 *

 * 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.

 */

#define RTAS_UNKNOWN_SERVICE (-1)

#define RTAS_INSTANTIATE_MAX (1UL<<30) /* Don't instantiate rtas at/above this value */

/* Error inject defines */

#define ERRINJCT_TOKEN_LEN 24 /* Max length of an error inject token */

#define MAX_ERRINJCT_TOKENS 8 /* Max # tokens. */

#define WORKSPACE_SIZE 1024 

/*

 * In general to call RTAS use rtas_token("string") to lookup

 * an RTAS token for the given string (e.g. "event-scan").

 * To actually perform the call use

 *    ret = rtas_call(token, n_in, n_out, ...)

 * Where n_in is the number of input parameters and

 *       n_out is the number of output parameters

 *

 * If the "string" is invalid on this system, RTAS_UNKOWN_SERVICE

 * will be returned as a token.  rtas_call() does look for this

 * token and error out gracefully so rtas_call(rtas_token("str"), ...)

 * may be safely used for one-shot calls to RTAS.

 *

 */

typedef u32 rtas_arg_t;

struct rtas_args {

        u32 token;

        u32 nargs;

        u32 nret;

        rtas_arg_t args[16];

#if 0

        spinlock_t lock;

#endif

        rtas_arg_t *rets;     /* Pointer to return values in args[]. */

};

struct rtas_t {

        unsigned long entry;            /* physical address pointer */

        unsigned long base;             /* physical address pointer */

        unsigned long size;

        spinlock_t lock;

        struct device_node *dev;        /* virtual address pointer */

};

/* Event classes */

#define RTAS_INTERNAL_ERROR             0x80000000 /* set bit 0 */

#define RTAS_EPOW_WARNING               0x40000000 /* set bit 1 */

#define RTAS_POWERMGM_EVENTS            0x20000000 /* set bit 2 */

#define RTAS_HOTPLUG_EVENTS             0x10000000 /* set bit 3 */

#define RTAS_EVENT_SCAN_ALL_EVENTS      0xf0000000

/* event-scan returns */

#define SEVERITY_FATAL          0x5

#define SEVERITY_ERROR          0x4

#define SEVERITY_ERROR_SYNC     0x3

#define SEVERITY_WARNING        0x2

#define SEVERITY_EVENT          0x1

#define SEVERITY_NO_ERROR       0x0

#define DISP_FULLY_RECOVERED    0x0

#define DISP_LIMITED_RECOVERY   0x1

#define DISP_NOT_RECOVERED      0x2

#define PART_PRESENT            0x0

#define PART_NOT_PRESENT        0x1

#define INITIATOR_UNKNOWN       0x0

#define INITIATOR_CPU           0x1

#define INITIATOR_PCI           0x2

#define INITIATOR_ISA           0x3

#define INITIATOR_MEMORY        0x4

#define INITIATOR_POWERMGM      0x5

#define TARGET_UNKNOWN          0x0

#define TARGET_CPU              0x1

#define TARGET_PCI              0x2

#define TARGET_ISA              0x3

#define TARGET_MEMORY           0x4

#define TARGET_POWERMGM         0x5

#define TYPE_RETRY              0x01

#define TYPE_TCE_ERR            0x02

#define TYPE_INTERN_DEV_FAIL    0x03

#define TYPE_TIMEOUT            0x04

#define TYPE_DATA_PARITY        0x05

#define TYPE_ADDR_PARITY        0x06

#define TYPE_CACHE_PARITY       0x07

#define TYPE_ADDR_INVALID       0x08

#define TYPE_ECC_UNCORR         0x09

#define TYPE_ECC_CORR           0x0a

#define TYPE_EPOW               0x40

/* I don't add PowerMGM events right now, this is a different topic */

#define TYPE_PMGM_POWER_SW_ON   0x60

#define TYPE_PMGM_POWER_SW_OFF  0x61

#define TYPE_PMGM_LID_OPEN      0x62

#define TYPE_PMGM_LID_CLOSE     0x63

#define TYPE_PMGM_SLEEP_BTN     0x64

#define TYPE_PMGM_WAKE_BTN      0x65

#define TYPE_PMGM_BATTERY_WARN  0x66

#define TYPE_PMGM_BATTERY_CRIT  0x67

#define TYPE_PMGM_SWITCH_TO_BAT 0x68

#define TYPE_PMGM_SWITCH_TO_AC  0x69

#define TYPE_PMGM_KBD_OR_MOUSE  0x6a

#define TYPE_PMGM_ENCLOS_OPEN   0x6b

#define TYPE_PMGM_ENCLOS_CLOSED 0x6c

#define TYPE_PMGM_RING_INDICATE 0x6d

#define TYPE_PMGM_LAN_ATTENTION 0x6e

#define TYPE_PMGM_TIME_ALARM    0x6f

#define TYPE_PMGM_CONFIG_CHANGE 0x70

#define TYPE_PMGM_SERVICE_PROC  0x71

struct rtas_error_log {

        unsigned long version:8;                /* Architectural version */

        unsigned long severity:3;               /* Severity level of error */

        unsigned long disposition:2;            /* Degree of recovery */

        unsigned long extended:1;               /* extended log present? */

        unsigned long /* reserved */ :2;        /* Reserved for future use */

        unsigned long initiator:4;              /* Initiator of event */

        unsigned long target:4;                 /* Target of failed operation */

        unsigned long type:8;                   /* General event or error*/

        unsigned long extended_log_length:32;   /* length in bytes */

        unsigned char buffer[1];                /* allocated by klimit bump */

};

struct errinjct_token {

        char * name;

        int value;

};

struct flash_block {

        char *data;

        unsigned long length;

};

/* This struct is very similar but not identical to

 * that needed by the rtas flash update.

 * All we need to do for rtas is rewrite num_blocks

 * into a version/length and translate the pointers

 * to absolute.

 */

#define FLASH_BLOCKS_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct flash_block))

struct flash_block_list {

        unsigned long num_blocks;

        struct flash_block_list *next;

        struct flash_block blocks[FLASH_BLOCKS_PER_NODE];

};

struct flash_block_list_header { /* just the header of flash_block_list */

        unsigned long num_blocks;

        struct flash_block_list *next;

};

extern struct flash_block_list_header rtas_firmware_flash_list;

extern struct rtas_t rtas;

extern void enter_rtas(struct rtas_args *);

extern int rtas_token(const char *service);

extern long rtas_call(int token, int, int, unsigned long *, ...);

extern void phys_call_rtas(int, int, int, ...);

extern void phys_call_rtas_display_status(char);

extern void call_rtas_display_status(char);

extern void rtas_restart(char *cmd);

extern void rtas_power_off(void);

extern void rtas_halt(void);

extern int rtas_errinjct_open(void);

extern int rtas_errinjct(unsigned int, char *, char *);

extern int rtas_errinjct_close(unsigned int);

extern struct proc_dir_entry *rtas_proc_dir;

extern struct errinjct_token ei_token_list[MAX_ERRINJCT_TOKENS];

extern void pSeries_log_error(char *buf, unsigned int err_type, int fatal);

/* Error types logged.  */

#define ERR_FLAG_ALREADY_LOGGED 0x0

#define ERR_FLAG_BOOT           0x1     /* log was pulled from NVRAM on boot */

#define ERR_TYPE_RTAS_LOG       0x2     /* from rtas event-scan */

#define ERR_TYPE_KERNEL_PANIC   0x4     /* from panic() */

/* All the types and not flags */

#define ERR_TYPE_MASK   (ERR_TYPE_RTAS_LOG | ERR_TYPE_KERNEL_PANIC)

#define RTAS_ERR KERN_ERR "RTAS: "

#define RTAS_ERROR_LOG_MAX 1024

/* Event Scan Parameters */

#define EVENT_SCAN_ALL_EVENTS   0xf0000000

#define SURVEILLANCE_TOKEN      9000

#define LOG_NUMBER              64              /* must be a power of two */

#define LOG_NUMBER_MASK         (LOG_NUMBER-1)

/* Given an RTAS status code of 9900..9905 compute the hinted delay */

unsigned int rtas_extended_busy_delay_time(int status);

static inline int rtas_is_extended_busy(int status)

{

        return status >= 9900 && status <= 9909;

}

/* Some RTAS ops require a data buffer and that buffer must be < 4G.

 * Rather than having a memory allocator, just use this buffer

 * (get the lock first), make the RTAS call.  Copy the data instead

 * of holding the buffer for long.

 */

#define RTAS_DATA_BUF_SIZE 4096

extern spinlock_t rtas_data_buf_lock;

extern char rtas_data_buf[RTAS_DATA_BUF_SIZE];

#endif /* _PPC64_RTAS_H */