sn_sal.h

h内核

#ifndef _ASM_IA64_SN_SN_SAL_H
#define _ASM_IA64_SN_SN_SAL_H

/*
 * System Abstraction Layer definitions for IA64
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All rights reserved.
 */


#include <linux/config.h>
#include <asm/sal.h>
#include <asm/sn/sn_cpuid.h>
#include <asm/sn/arch.h>
#include <asm/sn/geo.h>
#include <asm/sn/nodepda.h>

// SGI Specific Calls
#define  SN_SAL_POD_MODE                           0x02000001
#define  SN_SAL_SYSTEM_RESET                       0x02000002
#define  SN_SAL_PROBE                              0x02000003
#define  SN_SAL_GET_MASTER_NASID                   0x02000004
#define	 SN_SAL_GET_KLCONFIG_ADDR		   0x02000005
#define  SN_SAL_LOG_CE				   0x02000006
#define  SN_SAL_REGISTER_CE			   0x02000007
#define  SN_SAL_GET_PARTITION_ADDR		   0x02000009
#define  SN_SAL_XP_ADDR_REGION			   0x0200000f
#define  SN_SAL_NO_FAULT_ZONE_VIRTUAL		   0x02000010
#define  SN_SAL_NO_FAULT_ZONE_PHYSICAL		   0x02000011
#define  SN_SAL_PRINT_ERROR			   0x02000012
#define  SN_SAL_SET_ERROR_HANDLING_FEATURES	   0x0200001a	// reentrant
#define  SN_SAL_GET_FIT_COMPT			   0x0200001b	// reentrant
#define  SN_SAL_GET_HUB_INFO                       0x0200001c
#define  SN_SAL_GET_SAPIC_INFO                     0x0200001d
#define  SN_SAL_CONSOLE_PUTC                       0x02000021
#define  SN_SAL_CONSOLE_GETC                       0x02000022
#define  SN_SAL_CONSOLE_PUTS                       0x02000023
#define  SN_SAL_CONSOLE_GETS                       0x02000024
#define  SN_SAL_CONSOLE_GETS_TIMEOUT               0x02000025
#define  SN_SAL_CONSOLE_POLL                       0x02000026
#define  SN_SAL_CONSOLE_INTR                       0x02000027
#define  SN_SAL_CONSOLE_PUTB			   0x02000028
#define  SN_SAL_CONSOLE_XMIT_CHARS		   0x0200002a
#define  SN_SAL_CONSOLE_READC			   0x0200002b
#define  SN_SAL_SYSCTL_MODID_GET	           0x02000031
#define  SN_SAL_SYSCTL_GET                         0x02000032
#define  SN_SAL_SYSCTL_IOBRICK_MODULE_GET          0x02000033
#define  SN_SAL_SYSCTL_IO_PORTSPEED_GET            0x02000035
#define  SN_SAL_SYSCTL_SLAB_GET                    0x02000036
#define  SN_SAL_BUS_CONFIG		   	   0x02000037
#define  SN_SAL_SYS_SERIAL_GET			   0x02000038
#define  SN_SAL_PARTITION_SERIAL_GET		   0x02000039
#define  SN_SAL_SYSCTL_PARTITION_GET		   0x0200003a
#define  SN_SAL_SYSTEM_POWER_DOWN		   0x0200003b
#define  SN_SAL_GET_MASTER_BASEIO_NASID		   0x0200003c
#define  SN_SAL_COHERENCE                          0x0200003d
#define  SN_SAL_MEMPROTECT                         0x0200003e
#define  SN_SAL_SYSCTL_FRU_CAPTURE		   0x0200003f

#define  SN_SAL_SYSCTL_IOBRICK_PCI_OP		   0x02000042	// reentrant
#define	 SN_SAL_IROUTER_OP			   0x02000043
#define  SN_SAL_IOIF_INTERRUPT			   0x0200004a
#define  SN_SAL_HWPERF_OP			   0x02000050   // lock
#define  SN_SAL_IOIF_ERROR_INTERRUPT		   0x02000051

#define  SN_SAL_IOIF_SLOT_ENABLE		   0x02000053
#define  SN_SAL_IOIF_SLOT_DISABLE		   0x02000054
#define  SN_SAL_IOIF_GET_HUBDEV_INFO		   0x02000055
#define  SN_SAL_IOIF_GET_PCIBUS_INFO		   0x02000056
#define  SN_SAL_IOIF_GET_PCIDEV_INFO		   0x02000057
#define  SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST	   0x02000058

#define SN_SAL_HUB_ERROR_INTERRUPT		   0x02000060


/*
 * Service-specific constants
 */

/* Console interrupt manipulation */
	/* action codes */
#define SAL_CONSOLE_INTR_OFF    0       /* turn the interrupt off */
#define SAL_CONSOLE_INTR_ON     1       /* turn the interrupt on */
#define SAL_CONSOLE_INTR_STATUS 2	/* retrieve the interrupt status */
	/* interrupt specification & status return codes */
#define SAL_CONSOLE_INTR_XMIT	1	/* output interrupt */
#define SAL_CONSOLE_INTR_RECV	2	/* input interrupt */

/* interrupt handling */
#define SAL_INTR_ALLOC		1
#define SAL_INTR_FREE		2

/*
 * IRouter (i.e. generalized system controller) operations
 */
#define SAL_IROUTER_OPEN	0	/* open a subchannel */
#define SAL_IROUTER_CLOSE	1	/* close a subchannel */
#define SAL_IROUTER_SEND	2	/* send part of an IRouter packet */
#define SAL_IROUTER_RECV	3	/* receive part of an IRouter packet */
#define SAL_IROUTER_INTR_STATUS	4	/* check the interrupt status for
					 * an open subchannel
					 */
#define SAL_IROUTER_INTR_ON	5	/* enable an interrupt */
#define SAL_IROUTER_INTR_OFF	6	/* disable an interrupt */
#define SAL_IROUTER_INIT	7	/* initialize IRouter driver */

/* IRouter interrupt mask bits */
#define SAL_IROUTER_INTR_XMIT	SAL_CONSOLE_INTR_XMIT
#define SAL_IROUTER_INTR_RECV	SAL_CONSOLE_INTR_RECV


/*
 * SAL Error Codes
 */
#define SALRET_MORE_PASSES	1
#define SALRET_OK		0
#define SALRET_NOT_IMPLEMENTED	(-1)
#define SALRET_INVALID_ARG	(-2)
#define SALRET_ERROR		(-3)


/**
 * sn_sal_rev_major - get the major SGI SAL revision number
 *
 * The SGI PROM stores its version in sal_[ab]_rev_(major|minor).
 * This routine simply extracts the major value from the
 * @ia64_sal_systab structure constructed by ia64_sal_init().
 */
static inline int
sn_sal_rev_major(void)
{
	struct ia64_sal_systab *systab = efi.sal_systab;

	return (int)systab->sal_b_rev_major;
}

/**
 * sn_sal_rev_minor - get the minor SGI SAL revision number
 *
 * The SGI PROM stores its version in sal_[ab]_rev_(major|minor).
 * This routine simply extracts the minor value from the
 * @ia64_sal_systab structure constructed by ia64_sal_init().
 */
static inline int
sn_sal_rev_minor(void)
{
	struct ia64_sal_systab *systab = efi.sal_systab;
	
	return (int)systab->sal_b_rev_minor;
}

/*
 * Specify the minimum PROM revsion required for this kernel.
 * Note that they're stored in hex format...
 */
#define SN_SAL_MIN_MAJOR	0x4  /* SN2 kernels need at least PROM 4.0 */
#define SN_SAL_MIN_MINOR	0x0

/*
 * Returns the master console nasid, if the call fails, return an illegal
 * value.
 */
static inline u64
ia64_sn_get_console_nasid(void)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL(ret_stuff, SN_SAL_GET_MASTER_NASID, 0, 0, 0, 0, 0, 0, 0);

	if (ret_stuff.status < 0)
		return ret_stuff.status;

	/* Master console nasid is in 'v0' */
	return ret_stuff.v0;
}

/*
 * Returns the master baseio nasid, if the call fails, return an illegal
 * value.
 */
static inline u64
ia64_sn_get_master_baseio_nasid(void)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL(ret_stuff, SN_SAL_GET_MASTER_BASEIO_NASID, 0, 0, 0, 0, 0, 0, 0);

	if (ret_stuff.status < 0)
		return ret_stuff.status;

	/* Master baseio nasid is in 'v0' */
	return ret_stuff.v0;
}

static inline char *
ia64_sn_get_klconfig_addr(nasid_t nasid)
{
	struct ia64_sal_retval ret_stuff;
	int cnodeid;

	cnodeid = nasid_to_cnodeid(nasid);
	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL(ret_stuff, SN_SAL_GET_KLCONFIG_ADDR, (u64)nasid, 0, 0, 0, 0, 0, 0);

	/*
	 * We should panic if a valid cnode nasid does not produce
	 * a klconfig address.
	 */
	if (ret_stuff.status != 0) {
		panic("ia64_sn_get_klconfig_addr: Returned error %lx\n", ret_stuff.status);
	}
	return ret_stuff.v0 ? __va(ret_stuff.v0) : NULL;
}

/*
 * Returns the next console character.
 */
static inline u64
ia64_sn_console_getc(int *ch)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_GETC, 0, 0, 0, 0, 0, 0, 0);

	/* character is in 'v0' */
	*ch = (int)ret_stuff.v0;

	return ret_stuff.status;
}

/*
 * Read a character from the SAL console device, after a previous interrupt
 * or poll operation has given us to know that a character is available
 * to be read.
 */
static inline u64
ia64_sn_console_readc(void)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_READC, 0, 0, 0, 0, 0, 0, 0);

	/* character is in 'v0' */
	return ret_stuff.v0;
}

/*
 * Sends the given character to the console.
 */
static inline u64
ia64_sn_console_putc(char ch)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_PUTC, (uint64_t)ch, 0, 0, 0, 0, 0, 0);

	return ret_stuff.status;
}

/*
 * Sends the given buffer to the console.
 */
static inline u64
ia64_sn_console_putb(const char *buf, int len)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0; 
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_PUTB, (uint64_t)buf, (uint64_t)len, 0, 0, 0, 0, 0);

	if ( ret_stuff.status == 0 ) {
		return ret_stuff.v0;
	}
	return (u64)0;
}

/*
 * Print a platform error record
 */
static inline u64
ia64_sn_plat_specific_err_print(int (*hook)(const char*, ...), char *rec)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_REENTRANT(ret_stuff, SN_SAL_PRINT_ERROR, (uint64_t)hook, (uint64_t)rec, 0, 0, 0, 0, 0);

	return ret_stuff.status;
}

/*
 * Check for Platform errors
 */
static inline u64
ia64_sn_plat_cpei_handler(void)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_LOG_CE, 0, 0, 0, 0, 0, 0, 0);

	return ret_stuff.status;
}

/*
 * Checks for console input.
 */
static inline u64
ia64_sn_console_check(int *result)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_POLL, 0, 0, 0, 0, 0, 0, 0);

	/* result is in 'v0' */
	*result = (int)ret_stuff.v0;

	return ret_stuff.status;
}

/*
 * Checks console interrupt status
 */
static inline u64
ia64_sn_console_intr_status(void)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_INTR, 
		 0, SAL_CONSOLE_INTR_STATUS,
		 0, 0, 0, 0, 0);

	if (ret_stuff.status == 0) {
	    return ret_stuff.v0;
	}
	
	return 0;
}

/*
 * Enable an interrupt on the SAL console device.
 */
static inline void
ia64_sn_console_intr_enable(uint64_t intr)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_INTR, 
		 intr, SAL_CONSOLE_INTR_ON,
		 0, 0, 0, 0, 0);
}

/*
 * Disable an interrupt on the SAL console device.
 */
static inline void
ia64_sn_console_intr_disable(uint64_t intr)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_INTR, 
		 intr, SAL_CONSOLE_INTR_OFF,
		 0, 0, 0, 0, 0);
}

/*
 * Sends a character buffer to the console asynchronously.
 */
static inline u64
ia64_sn_console_xmit_chars(char *buf, int len)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_CONSOLE_XMIT_CHARS,
		 (uint64_t)buf, (uint64_t)len,
		 0, 0, 0, 0, 0);

	if (ret_stuff.status == 0) {
	    return ret_stuff.v0;
	}

	return 0;
}

/*
 * Returns the iobrick module Id
 */
static inline u64
ia64_sn_sysctl_iobrick_module_get(nasid_t nasid, int *result)
{
	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;
	ret_stuff.v0 = 0;
	ret_stuff.v1 = 0;
	ret_stuff.v2 = 0;
	SAL_CALL_NOLOCK(ret_stuff, SN_SAL_SYSCTL_IOBRICK_MODULE_GET, nasid, 0, 0, 0, 0, 0, 0);

	/* result is in 'v0' */
	*result = (int)ret_stuff.v0;

	return ret_stuff.status;
}

/**
 * ia64_sn_pod_mode - call the SN_SAL_POD_MODE function
 *
 * SN_SAL_POD_MODE actually takes an argument, but it's always
 * 0 when we call it from the kernel, so we don't have to expose
 * it to the caller.
 */
static inline u64
ia64_sn_pod_mode(void)
{
	struct ia64_sal_retval isrv;
	SAL_CALL(isrv, SN_SAL_POD_MODE, 0, 0, 0, 0, 0, 0, 0);
	if (isrv.status)
		return 0;
	return isrv.v0;
}

/**
 * ia64_sn_probe_mem - read from memory safely
 * @addr: address to probe
 * @size: number bytes to read (1,2,4,8)
 * @data_ptr: address to store value read by probe (-1 returned if probe fails)
 *
 * Call into the SAL to do a memory read.  If the read generates a machine
 * check, this routine will recover gracefully and return -1 to the caller.
 * @addr is usually a kernel virtual address in uncached space (i.e. the
 * address starts with 0xc), but if called in physical mode, @addr should
 * be a physical address.
 *
 * Return values:
 *  0 - probe successful
 *  1 - probe failed (generated MCA)
 *  2 - Bad arg
 * <0 - PAL error
 */
static inline u64