[deliverable/linux.git] / arch / ia64 / kernel / sal.c

/*
 * System Abstraction Layer (SAL) interface routines.
 *
 * Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
 *	David Mosberger-Tang <davidm@hpl.hp.com>
 * Copyright (C) 1999 VA Linux Systems
 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/string.h>

#include <asm/delay.h>
#include <asm/page.h>
#include <asm/sal.h>
#include <asm/pal.h>

 __cacheline_aligned DEFINE_SPINLOCK(sal_lock);
unsigned long sal_platform_features;

unsigned short sal_revision;
unsigned short sal_version;

#define SAL_MAJOR(x) ((x) >> 8)
#define SAL_MINOR(x) ((x) & 0xff)

static struct {
	void *addr;	/* function entry point */
	void *gpval;	/* gp value to use */
} pdesc;

static long
default_handler (void)
{
	return -1;
}

ia64_sal_handler ia64_sal = (ia64_sal_handler) default_handler;
ia64_sal_desc_ptc_t *ia64_ptc_domain_info;

const char *
ia64_sal_strerror (long status)
{
	const char *str;
	switch (status) {
	      case 0: str = "Call completed without error"; break;
	      case 1: str = "Effect a warm boot of the system to complete "
			      "the update"; break;
	      case -1: str = "Not implemented"; break;
	      case -2: str = "Invalid argument"; break;
	      case -3: str = "Call completed with error"; break;
	      case -4: str = "Virtual address not registered"; break;
	      case -5: str = "No information available"; break;
	      case -6: str = "Insufficient space to add the entry"; break;
	      case -7: str = "Invalid entry_addr value"; break;
	      case -8: str = "Invalid interrupt vector"; break;
	      case -9: str = "Requested memory not available"; break;
	      case -10: str = "Unable to write to the NVM device"; break;
	      case -11: str = "Invalid partition type specified"; break;
	      case -12: str = "Invalid NVM_Object id specified"; break;
	      case -13: str = "NVM_Object already has the maximum number "
				"of partitions"; break;
	      case -14: str = "Insufficient space in partition for the "
				"requested write sub-function"; break;
	      case -15: str = "Insufficient data buffer space for the "
				"requested read record sub-function"; break;
	      case -16: str = "Scratch buffer required for the write/delete "
				"sub-function"; break;
	      case -17: str = "Insufficient space in the NVM_Object for the "
				"requested create sub-function"; break;
	      case -18: str = "Invalid value specified in the partition_rec "
				"argument"; break;
	      case -19: str = "Record oriented I/O not supported for this "
				"partition"; break;
	      case -20: str = "Bad format of record to be written or "
				"required keyword variable not "
				"specified"; break;
	      default: str = "Unknown SAL status code"; break;
	}
	return str;
}

void __init
ia64_sal_handler_init (void *entry_point, void *gpval)
{
	/* fill in the SAL procedure descriptor and point ia64_sal to it: */
	pdesc.addr = entry_point;
	pdesc.gpval = gpval;
	ia64_sal = (ia64_sal_handler) &pdesc;
}

static void __init
check_versions (struct ia64_sal_systab *systab)
{
	sal_revision = (systab->sal_rev_major << 8) | systab->sal_rev_minor;
	sal_version = (systab->sal_b_rev_major << 8) | systab->sal_b_rev_minor;

	/* Check for broken firmware */
	if ((sal_revision == SAL_VERSION_CODE(49, 29))
	    && (sal_version == SAL_VERSION_CODE(49, 29)))
	{
		/*
		 * Old firmware for zx2000 prototypes have this weird version number,
		 * reset it to something sane.
		 */
		sal_revision = SAL_VERSION_CODE(2, 8);
		sal_version = SAL_VERSION_CODE(0, 0);
	}

	if (ia64_platform_is("sn2") && (sal_revision == SAL_VERSION_CODE(2, 9)))
		/*
		 * SGI Altix has hard-coded version 2.9 in their prom
		 * but they actually implement 3.2, so let's fix it here.
		 */
		sal_revision = SAL_VERSION_CODE(3, 2);
}

static void __init
sal_desc_entry_point (void *p)
{
	struct ia64_sal_desc_entry_point *ep = p;
	ia64_pal_handler_init(__va(ep->pal_proc));
	ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
}

#ifdef CONFIG_SMP
static void __init
set_smp_redirect (int flag)
{
#ifndef CONFIG_HOTPLUG_CPU
	if (no_int_routing)
		smp_int_redirect &= ~flag;
	else
		smp_int_redirect |= flag;
#else
	/*
	 * For CPU Hotplug we dont want to do any chipset supported
	 * interrupt redirection. The reason is this would require that
	 * All interrupts be stopped and hard bind the irq to a cpu.
	 * Later when the interrupt is fired we need to set the redir hint
	 * on again in the vector. This is cumbersome for something that the
	 * user mode irq balancer will solve anyways.
	 */
	no_int_routing=1;
	smp_int_redirect &= ~flag;
#endif
}
#else
#define set_smp_redirect(flag)	do { } while (0)
#endif

static void __init
sal_desc_platform_feature (void *p)
{
	struct ia64_sal_desc_platform_feature *pf = p;
	sal_platform_features = pf->feature_mask;

	printk(KERN_INFO "SAL Platform features:");
	if (!sal_platform_features) {
		printk(" None\n");
		return;
	}

	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
		printk(" BusLock");
	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
		printk(" IRQ_Redirection");
		set_smp_redirect(SMP_IRQ_REDIRECTION);
	}
	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
		printk(" IPI_Redirection");
		set_smp_redirect(SMP_IPI_REDIRECTION);
	}
	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
		printk(" ITC_Drift");
	printk("\n");
}

#ifdef CONFIG_SMP
static void __init
sal_desc_ap_wakeup (void *p)
{
	struct ia64_sal_desc_ap_wakeup *ap = p;

	switch (ap->mechanism) {
	case IA64_SAL_AP_EXTERNAL_INT:
		ap_wakeup_vector = ap->vector;
		printk(KERN_INFO "SAL: AP wakeup using external interrupt "
				"vector 0x%lx\n", ap_wakeup_vector);
		break;
	default:
		printk(KERN_ERR "SAL: AP wakeup mechanism unsupported!\n");
		break;
	}
}

static void __init
chk_nointroute_opt(void)
{
	char *cp;

	for (cp = boot_command_line; *cp; ) {
		if (memcmp(cp, "nointroute", 10) == 0) {
			no_int_routing = 1;
			printk ("no_int_routing on\n");
			break;
		} else {
			while (*cp != ' ' && *cp)
				++cp;
			while (*cp == ' ')
				++cp;
		}
	}
}

#else
static void __init sal_desc_ap_wakeup(void *p) { }
#endif

/*
 * HP rx5670 firmware polls for interrupts during SAL_CACHE_FLUSH by reading
 * cr.ivr, but it never writes cr.eoi.  This leaves any interrupt marked as
 * "in-service" and masks other interrupts of equal or lower priority.
 *
 * HP internal defect reports: F1859, F2775, F3031.
 */
static int sal_cache_flush_drops_interrupts;

static int __init
force_pal_cache_flush(char *str)
{
	sal_cache_flush_drops_interrupts = 1;
	return 0;
}
early_param("force_pal_cache_flush", force_pal_cache_flush);

void __init
check_sal_cache_flush (void)
{
	unsigned long flags;
	int cpu;
	u64 vector, cache_type = 3;
	struct ia64_sal_retval isrv;

	if (sal_cache_flush_drops_interrupts)
		return;

	cpu = get_cpu();
	local_irq_save(flags);

	/*
	 * Send ourselves a timer interrupt, wait until it's reported, and see
	 * if SAL_CACHE_FLUSH drops it.
	 */
	platform_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);

	while (!ia64_get_irr(IA64_TIMER_VECTOR))
		cpu_relax();

	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);

	if (isrv.status)
		printk(KERN_ERR "SAL_CAL_FLUSH failed with %ld\n", isrv.status);

	if (ia64_get_irr(IA64_TIMER_VECTOR)) {
		vector = ia64_get_ivr();
		ia64_eoi();
		WARN_ON(vector != IA64_TIMER_VECTOR);
	} else {
		sal_cache_flush_drops_interrupts = 1;
		printk(KERN_ERR "SAL: SAL_CACHE_FLUSH drops interrupts; "
			"PAL_CACHE_FLUSH will be used instead\n");
		ia64_eoi();
	}

	local_irq_restore(flags);
	put_cpu();
}

s64
ia64_sal_cache_flush (u64 cache_type)
{
	struct ia64_sal_retval isrv;

	if (sal_cache_flush_drops_interrupts) {
		unsigned long flags;
		u64 progress;
		s64 rc;

		progress = 0;
		local_irq_save(flags);
		rc = ia64_pal_cache_flush(cache_type,
			PAL_CACHE_FLUSH_INVALIDATE, &progress, NULL);
		local_irq_restore(flags);
		return rc;
	}

	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
	return isrv.status;
}
EXPORT_SYMBOL_GPL(ia64_sal_cache_flush);

void __init
ia64_sal_init (struct ia64_sal_systab *systab)
{
	char *p;
	int i;

	if (!systab) {
		printk(KERN_WARNING "Hmm, no SAL System Table.\n");
		return;
	}

	if (strncmp(systab->signature, "SST_", 4) != 0)
		printk(KERN_ERR "bad signature in system table!");

	check_versions(systab);
#ifdef CONFIG_SMP
	chk_nointroute_opt();
#endif

	/* revisions are coded in BCD, so %x does the job for us */
	printk(KERN_INFO "SAL %x.%x: %.32s %.32s%sversion %x.%x\n",
			SAL_MAJOR(sal_revision), SAL_MINOR(sal_revision),
			systab->oem_id, systab->product_id,
			systab->product_id[0] ? " " : "",
			SAL_MAJOR(sal_version), SAL_MINOR(sal_version));

	p = (char *) (systab + 1);
	for (i = 0; i < systab->entry_count; i++) {
		/*
		 * The first byte of each entry type contains the type
		 * descriptor.
		 */
		switch (*p) {
		case SAL_DESC_ENTRY_POINT:
			sal_desc_entry_point(p);
			break;
		case SAL_DESC_PLATFORM_FEATURE:
			sal_desc_platform_feature(p);
			break;
		case SAL_DESC_PTC:
			ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
			break;
		case SAL_DESC_AP_WAKEUP:
			sal_desc_ap_wakeup(p);
			break;
		}
		p += SAL_DESC_SIZE(*p);
	}

}

int
ia64_sal_oemcall(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
		 u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7)
{
	if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
		return -1;
	SAL_CALL(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
	return 0;
}
EXPORT_SYMBOL(ia64_sal_oemcall);

int
ia64_sal_oemcall_nolock(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
			u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6,
			u64 arg7)
{
	if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
		return -1;
	SAL_CALL_NOLOCK(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
			arg7);
	return 0;
}
EXPORT_SYMBOL(ia64_sal_oemcall_nolock);

int
ia64_sal_oemcall_reentrant(struct ia64_sal_retval *isrvp, u64 oemfunc,
			   u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5,
			   u64 arg6, u64 arg7)
{
	if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
		return -1;
	SAL_CALL_REENTRANT(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
			   arg7);
	return 0;
}
EXPORT_SYMBOL(ia64_sal_oemcall_reentrant);

long
ia64_sal_freq_base (unsigned long which, unsigned long *ticks_per_second,
		    unsigned long *drift_info)
{
	struct ia64_sal_retval isrv;

	SAL_CALL(isrv, SAL_FREQ_BASE, which, 0, 0, 0, 0, 0, 0);
	*ticks_per_second = isrv.v0;
	*drift_info = isrv.v1;
	return isrv.status;
}
EXPORT_SYMBOL_GPL(ia64_sal_freq_base);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* System Abstraction Layer (SAL) interface routines.
	3	*
	4	* Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
	5	* David Mosberger-Tang <davidm@hpl.hp.com>
	6	* Copyright (C) 1999 VA Linux Systems
	7	* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
	8	*/
1da177e4 LT	9
	10	#include <linux/kernel.h>
	11	#include <linux/init.h>
	12	#include <linux/module.h>
	13	#include <linux/spinlock.h>
	14	#include <linux/string.h>
	15
a5878691	16	#include <asm/delay.h>
1da177e4 LT	17	#include <asm/page.h>
	18	#include <asm/sal.h>
	19	#include <asm/pal.h>
	20
	21	__cacheline_aligned DEFINE_SPINLOCK(sal_lock);
	22	unsigned long sal_platform_features;
	23
	24	unsigned short sal_revision;
	25	unsigned short sal_version;
	26
	27	#define SAL_MAJOR(x) ((x) >> 8)
	28	#define SAL_MINOR(x) ((x) & 0xff)
	29
	30	static struct {
	31	void addr; / function entry point */
	32	void gpval; / gp value to use */
	33	} pdesc;
	34
	35	static long
	36	default_handler (void)
	37	{
	38	return -1;
	39	}
	40
	41	ia64_sal_handler ia64_sal = (ia64_sal_handler) default_handler;
	42	ia64_sal_desc_ptc_t *ia64_ptc_domain_info;
	43
	44	const char *
	45	ia64_sal_strerror (long status)
	46	{
	47	const char *str;
	48	switch (status) {
	49	case 0: str = "Call completed without error"; break;
	50	case 1: str = "Effect a warm boot of the system to complete "
	51	"the update"; break;
	52	case -1: str = "Not implemented"; break;
	53	case -2: str = "Invalid argument"; break;
	54	case -3: str = "Call completed with error"; break;
	55	case -4: str = "Virtual address not registered"; break;
	56	case -5: str = "No information available"; break;
	57	case -6: str = "Insufficient space to add the entry"; break;
	58	case -7: str = "Invalid entry_addr value"; break;
	59	case -8: str = "Invalid interrupt vector"; break;
	60	case -9: str = "Requested memory not available"; break;
	61	case -10: str = "Unable to write to the NVM device"; break;
	62	case -11: str = "Invalid partition type specified"; break;
	63	case -12: str = "Invalid NVM_Object id specified"; break;
	64	case -13: str = "NVM_Object already has the maximum number "
	65	"of partitions"; break;
	66	case -14: str = "Insufficient space in partition for the "
	67	"requested write sub-function"; break;
	68	case -15: str = "Insufficient data buffer space for the "
	69	"requested read record sub-function"; break;
	70	case -16: str = "Scratch buffer required for the write/delete "
	71	"sub-function"; break;
	72	case -17: str = "Insufficient space in the NVM_Object for the "
	73	"requested create sub-function"; break;
	74	case -18: str = "Invalid value specified in the partition_rec "
	75	"argument"; break;
	76	case -19: str = "Record oriented I/O not supported for this "
	77	"partition"; break;
	78	case -20: str = "Bad format of record to be written or "
	79	"required keyword variable not "
	80	"specified"; break;
81	default: str = "Unknown SAL status code"; break;
82	}
83	return str;
84	}
85
86	void __init
87	ia64_sal_handler_init (void entry_point, void gpval)
88	{
89	/* fill in the SAL procedure descriptor and point ia64_sal to it: */
90	pdesc.addr = entry_point;
91	pdesc.gpval = gpval;
92	ia64_sal = (ia64_sal_handler) &pdesc;
93	}
94
95	static void __init
96	check_versions (struct ia64_sal_systab *systab)
97	{
98	sal_revision = (systab->sal_rev_major << 8) \| systab->sal_rev_minor;
99	sal_version = (systab->sal_b_rev_major << 8) \| systab->sal_b_rev_minor;
100
101	/* Check for broken firmware */
102	if ((sal_revision == SAL_VERSION_CODE(49, 29))
103	&& (sal_version == SAL_VERSION_CODE(49, 29)))
104	{
105	/*
106	* Old firmware for zx2000 prototypes have this weird version number,
107	* reset it to something sane.
108	*/
109	sal_revision = SAL_VERSION_CODE(2, 8);
110	sal_version = SAL_VERSION_CODE(0, 0);
111	}
6ed0dc5b AC	112
	113	if (ia64_platform_is("sn2") && (sal_revision == SAL_VERSION_CODE(2, 9)))
	114	/*
	115	* SGI Altix has hard-coded version 2.9 in their prom
	116	* but they actually implement 3.2, so let's fix it here.
	117	*/
	118	sal_revision = SAL_VERSION_CODE(3, 2);
1da177e4 LT	119	}
	120
	121	static void __init
	122	sal_desc_entry_point (void *p)
	123	{
	124	struct ia64_sal_desc_entry_point *ep = p;
	125	ia64_pal_handler_init(__va(ep->pal_proc));
	126	ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
	127	}
	128
	129	#ifdef CONFIG_SMP
	130	static void __init
	131	set_smp_redirect (int flag)
	132	{
	133	#ifndef CONFIG_HOTPLUG_CPU
	134	if (no_int_routing)
	135	smp_int_redirect &= ~flag;
	136	else
	137	smp_int_redirect \|= flag;
	138	#else
	139	/*
	140	* For CPU Hotplug we dont want to do any chipset supported
	141	* interrupt redirection. The reason is this would require that
	142	* All interrupts be stopped and hard bind the irq to a cpu.
	143	* Later when the interrupt is fired we need to set the redir hint
72fdbdce	144	* on again in the vector. This is cumbersome for something that the
1da177e4 LT	145	* user mode irq balancer will solve anyways.
	146	*/
	147	no_int_routing=1;
	148	smp_int_redirect &= ~flag;
	149	#endif
	150	}
	151	#else
	152	#define set_smp_redirect(flag) do { } while (0)
	153	#endif
	154
	155	static void __init
	156	sal_desc_platform_feature (void *p)
	157	{
	158	struct ia64_sal_desc_platform_feature *pf = p;
	159	sal_platform_features = pf->feature_mask;
	160
	161	printk(KERN_INFO "SAL Platform features:");
	162	if (!sal_platform_features) {
	163	printk(" None\n");
	164	return;
	165	}
	166
	167	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
	168	printk(" BusLock");
	169	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
	170	printk(" IRQ_Redirection");
	171	set_smp_redirect(SMP_IRQ_REDIRECTION);
	172	}
	173	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
	174	printk(" IPI_Redirection");
	175	set_smp_redirect(SMP_IPI_REDIRECTION);
	176	}
	177	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
	178	printk(" ITC_Drift");
	179	printk("\n");
	180	}
	181
	182	#ifdef CONFIG_SMP
	183	static void __init
	184	sal_desc_ap_wakeup (void *p)
	185	{
	186	struct ia64_sal_desc_ap_wakeup *ap = p;
	187
	188	switch (ap->mechanism) {
	189	case IA64_SAL_AP_EXTERNAL_INT:
	190	ap_wakeup_vector = ap->vector;
	191	printk(KERN_INFO "SAL: AP wakeup using external interrupt "
	192	"vector 0x%lx\n", ap_wakeup_vector);
	193	break;
	194	default:
	195	printk(KERN_ERR "SAL: AP wakeup mechanism unsupported!\n");
	196	break;
	197	}
	198	}
	199
	200	static void __init
	201	chk_nointroute_opt(void)
	202	{
	203	char *cp;
1da177e4	204
a8d91b84	205	for (cp = boot_command_line; *cp; ) {
1da177e4 LT	206	if (memcmp(cp, "nointroute", 10) == 0) {
	207	no_int_routing = 1;
	208	printk ("no_int_routing on\n");
	209	break;
	210	} else {
	211	while (cp != ' ' && cp)
	212	++cp;
	213	while (*cp == ' ')
	214	++cp;
	215	}
	216	}
	217	}
	218
	219	#else
	220	static void __init sal_desc_ap_wakeup(void *p) { }
	221	#endif
	222
a5878691 BH	223	/*
	224	* HP rx5670 firmware polls for interrupts during SAL_CACHE_FLUSH by reading
	225	* cr.ivr, but it never writes cr.eoi. This leaves any interrupt marked as
	226	* "in-service" and masks other interrupts of equal or lower priority.
	227	*
	228	* HP internal defect reports: F1859, F2775, F3031.
	229	*/
	230	static int sal_cache_flush_drops_interrupts;
	231
f13ae30e AC	232	static int __init
	233	force_pal_cache_flush(char *str)
	234	{
	235	sal_cache_flush_drops_interrupts = 1;
	236	return 0;
	237	}
	238	early_param("force_pal_cache_flush", force_pal_cache_flush);
	239
fa1d19e5	240	void __init
a5878691 BH	241	check_sal_cache_flush (void)
a5878691 BH	242	{
9ba89334	243	unsigned long flags;
a5878691	244	int cpu;
fa1d19e5 TH	245	u64 vector, cache_type = 3;
fa1d19e5 TH	246	struct ia64_sal_retval isrv;
a5878691	247
f13ae30e AC	248	if (sal_cache_flush_drops_interrupts)
	249	return;
	250
a5878691 BH	251	cpu = get_cpu();
	252	local_irq_save(flags);
	253
	254	/*
3463a93d AC	255	* Send ourselves a timer interrupt, wait until it's reported, and see
3463a93d AC	256	* if SAL_CACHE_FLUSH drops it.
a5878691	257	*/
3463a93d	258	platform_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
a5878691 BH	259
	260	while (!ia64_get_irr(IA64_TIMER_VECTOR))
	261	cpu_relax();
	262
fa1d19e5 TH	263	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
	264
	265	if (isrv.status)
	266	printk(KERN_ERR "SAL_CAL_FLUSH failed with %ld\n", isrv.status);
a5878691 BH	267
	268	if (ia64_get_irr(IA64_TIMER_VECTOR)) {
	269	vector = ia64_get_ivr();
	270	ia64_eoi();
	271	WARN_ON(vector != IA64_TIMER_VECTOR);
	272	} else {
	273	sal_cache_flush_drops_interrupts = 1;
	274	printk(KERN_ERR "SAL: SAL_CACHE_FLUSH drops interrupts; "
	275	"PAL_CACHE_FLUSH will be used instead\n");
	276	ia64_eoi();
	277	}
	278
a5878691 BH	279	local_irq_restore(flags);
	280	put_cpu();
	281	}
	282
	283	s64
	284	ia64_sal_cache_flush (u64 cache_type)
	285	{
	286	struct ia64_sal_retval isrv;
	287
	288	if (sal_cache_flush_drops_interrupts) {
	289	unsigned long flags;
	290	u64 progress;
	291	s64 rc;
	292
	293	progress = 0;
	294	local_irq_save(flags);
	295	rc = ia64_pal_cache_flush(cache_type,
	296	PAL_CACHE_FLUSH_INVALIDATE, &progress, NULL);
	297	local_irq_restore(flags);
	298	return rc;
	299	}
	300
	301	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
	302	return isrv.status;
	303	}
a7d57ecf	304	EXPORT_SYMBOL_GPL(ia64_sal_cache_flush);
a5878691	305
1da177e4 LT	306	void __init
	307	ia64_sal_init (struct ia64_sal_systab *systab)
	308	{
	309	char *p;
	310	int i;
	311
	312	if (!systab) {
	313	printk(KERN_WARNING "Hmm, no SAL System Table.\n");
	314	return;
	315	}
	316
	317	if (strncmp(systab->signature, "SST_", 4) != 0)
	318	printk(KERN_ERR "bad signature in system table!");
	319
	320	check_versions(systab);
	321	#ifdef CONFIG_SMP
	322	chk_nointroute_opt();
	323	#endif
	324
	325	/* revisions are coded in BCD, so %x does the job for us */
	326	printk(KERN_INFO "SAL %x.%x: %.32s %.32s%sversion %x.%x\n",
	327	SAL_MAJOR(sal_revision), SAL_MINOR(sal_revision),
	328	systab->oem_id, systab->product_id,
	329	systab->product_id[0] ? " " : "",
	330	SAL_MAJOR(sal_version), SAL_MINOR(sal_version));
	331
	332	p = (char *) (systab + 1);
	333	for (i = 0; i < systab->entry_count; i++) {
	334	/*
	335	* The first byte of each entry type contains the type
	336	* descriptor.
	337	*/
	338	switch (*p) {
	339	case SAL_DESC_ENTRY_POINT:
	340	sal_desc_entry_point(p);
	341	break;
	342	case SAL_DESC_PLATFORM_FEATURE:
	343	sal_desc_platform_feature(p);
	344	break;
	345	case SAL_DESC_PTC:
	346	ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
	347	break;
	348	case SAL_DESC_AP_WAKEUP:
	349	sal_desc_ap_wakeup(p);
	350	break;
	351	}
	352	p += SAL_DESC_SIZE(*p);
	353	}
a5878691	354
1da177e4 LT	355	}
	356
	357	int
	358	ia64_sal_oemcall(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
	359	u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7)
	360	{
	361	if (oemfunc < IA64_SAL_OEMFUNC_MIN \|\| oemfunc > IA64_SAL_OEMFUNC_MAX)
	362	return -1;
	363	SAL_CALL(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
	364	return 0;
	365	}
	366	EXPORT_SYMBOL(ia64_sal_oemcall);
	367
	368	int
	369	ia64_sal_oemcall_nolock(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
	370	u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6,
	371	u64 arg7)
	372	{
	373	if (oemfunc < IA64_SAL_OEMFUNC_MIN \|\| oemfunc > IA64_SAL_OEMFUNC_MAX)
	374	return -1;
	375	SAL_CALL_NOLOCK(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
	376	arg7);
	377	return 0;
	378	}
	379	EXPORT_SYMBOL(ia64_sal_oemcall_nolock);
	380
	381	int
	382	ia64_sal_oemcall_reentrant(struct ia64_sal_retval *isrvp, u64 oemfunc,
	383	u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5,
	384	u64 arg6, u64 arg7)
	385	{
	386	if (oemfunc < IA64_SAL_OEMFUNC_MIN \|\| oemfunc > IA64_SAL_OEMFUNC_MAX)
	387	return -1;
	388	SAL_CALL_REENTRANT(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
	389	arg7);
	390	return 0;
	391	}
	392	EXPORT_SYMBOL(ia64_sal_oemcall_reentrant);
a7d57ecf ZX	393
	394	long
	395	ia64_sal_freq_base (unsigned long which, unsigned long *ticks_per_second,
	396	unsigned long *drift_info)
	397	{
	398	struct ia64_sal_retval isrv;
	399
	400	SAL_CALL(isrv, SAL_FREQ_BASE, which, 0, 0, 0, 0, 0, 0);
	401	*ticks_per_second = isrv.v0;
	402	*drift_info = isrv.v1;
	403	return isrv.status;
	404	}
	405	EXPORT_SYMBOL_GPL(ia64_sal_freq_base);