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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 */
/*
* 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 INTERNAL_ERROR 0x80000000 /* set bit 0 */
#define EPOW_WARNING 0x40000000 /* set bit 1 */
#define POWERMGM_EVENTS 0x20000000 /* set bit 2 */
#define HOTPLUG_EVENTS 0x10000000 /* set bit 3 */
#define 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 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);
/* 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 1024
extern spinlock_t rtas_data_buf_lock;
extern char rtas_data_buf[RTAS_DATA_BUF_SIZE];
#endif /* _PPC64_RTAS_H */
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