[mirror_ubuntu-hirsute-kernel.git] / arch / ia64 / kernel / sal.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * 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>
#include <asm/xtp.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);
	}
}

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.
	 */
	ia64_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
457c8996	1	// SPDX-License-Identifier: GPL-2.0-only
1da177e4 LT	2	/*
	3	* System Abstraction Layer (SAL) interface routines.
	4	*
	5	* Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
	6	* David Mosberger-Tang <davidm@hpl.hp.com>
	7	* Copyright (C) 1999 VA Linux Systems
	8	* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
	9	*/
1da177e4 LT	10
	11	#include <linux/kernel.h>
	12	#include <linux/init.h>
	13	#include <linux/module.h>
	14	#include <linux/spinlock.h>
	15	#include <linux/string.h>
	16
a5878691	17	#include <asm/delay.h>
1da177e4 LT	18	#include <asm/page.h>
	19	#include <asm/sal.h>
	20	#include <asm/pal.h>
b3545192	21	#include <asm/xtp.h>
1da177e4 LT	22
	23	__cacheline_aligned DEFINE_SPINLOCK(sal_lock);
	24	unsigned long sal_platform_features;
	25
	26	unsigned short sal_revision;
	27	unsigned short sal_version;
	28
	29	#define SAL_MAJOR(x) ((x) >> 8)
	30	#define SAL_MINOR(x) ((x) & 0xff)
	31
	32	static struct {
	33	void addr; / function entry point */
	34	void gpval; / gp value to use */
	35	} pdesc;
	36
	37	static long
	38	default_handler (void)
	39	{
	40	return -1;
	41	}
	42
	43	ia64_sal_handler ia64_sal = (ia64_sal_handler) default_handler;
	44	ia64_sal_desc_ptc_t *ia64_ptc_domain_info;
	45
	46	const char *
	47	ia64_sal_strerror (long status)
	48	{
	49	const char *str;
	50	switch (status) {
	51	case 0: str = "Call completed without error"; break;
	52	case 1: str = "Effect a warm boot of the system to complete "
	53	"the update"; break;
	54	case -1: str = "Not implemented"; break;
	55	case -2: str = "Invalid argument"; break;
	56	case -3: str = "Call completed with error"; break;
	57	case -4: str = "Virtual address not registered"; break;
	58	case -5: str = "No information available"; break;
	59	case -6: str = "Insufficient space to add the entry"; break;
	60	case -7: str = "Invalid entry_addr value"; break;
	61	case -8: str = "Invalid interrupt vector"; break;
	62	case -9: str = "Requested memory not available"; break;
	63	case -10: str = "Unable to write to the NVM device"; break;
	64	case -11: str = "Invalid partition type specified"; break;
	65	case -12: str = "Invalid NVM_Object id specified"; break;
	66	case -13: str = "NVM_Object already has the maximum number "
	67	"of partitions"; break;
	68	case -14: str = "Insufficient space in partition for the "
	69	"requested write sub-function"; break;
	70	case -15: str = "Insufficient data buffer space for the "
	71	"requested read record sub-function"; break;
	72	case -16: str = "Scratch buffer required for the write/delete "
	73	"sub-function"; break;
	74	case -17: str = "Insufficient space in the NVM_Object for the "
	75	"requested create sub-function"; break;
	76	case -18: str = "Invalid value specified in the partition_rec "
	77	"argument"; break;
	78	case -19: str = "Record oriented I/O not supported for this "
	79	"partition"; break;
	80	case -20: str = "Bad format of record to be written or "
	81	"required keyword variable not "
	82	"specified"; break;
	83	default: str = "Unknown SAL status code"; break;
	84	}
	85	return str;
86	}
87
88	void __init
89	ia64_sal_handler_init (void entry_point, void gpval)
90	{
91	/* fill in the SAL procedure descriptor and point ia64_sal to it: */
92	pdesc.addr = entry_point;
93	pdesc.gpval = gpval;
94	ia64_sal = (ia64_sal_handler) &pdesc;
95	}
96
97	static void __init
98	check_versions (struct ia64_sal_systab *systab)
99	{
100	sal_revision = (systab->sal_rev_major << 8) \| systab->sal_rev_minor;
101	sal_version = (systab->sal_b_rev_major << 8) \| systab->sal_b_rev_minor;
102
103	/* Check for broken firmware */
104	if ((sal_revision == SAL_VERSION_CODE(49, 29))
105	&& (sal_version == SAL_VERSION_CODE(49, 29)))
106	{
107	/*
108	* Old firmware for zx2000 prototypes have this weird version number,
109	* reset it to something sane.
110	*/
111	sal_revision = SAL_VERSION_CODE(2, 8);
112	sal_version = SAL_VERSION_CODE(0, 0);
113	}
114	}
115
116	static void __init
117	sal_desc_entry_point (void *p)
118	{
119	struct ia64_sal_desc_entry_point *ep = p;
120	ia64_pal_handler_init(__va(ep->pal_proc));
121	ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
122	}
123
124	#ifdef CONFIG_SMP
125	static void __init
126	set_smp_redirect (int flag)
127	{
128	#ifndef CONFIG_HOTPLUG_CPU
129	if (no_int_routing)
130	smp_int_redirect &= ~flag;
131	else
132	smp_int_redirect \|= flag;
133	#else
134	/*
135	* For CPU Hotplug we dont want to do any chipset supported
136	* interrupt redirection. The reason is this would require that
137	* All interrupts be stopped and hard bind the irq to a cpu.
138	* Later when the interrupt is fired we need to set the redir hint
72fdbdce	139	* on again in the vector. This is cumbersome for something that the
1da177e4 LT	140	* user mode irq balancer will solve anyways.
	141	*/
	142	no_int_routing=1;
	143	smp_int_redirect &= ~flag;
	144	#endif
	145	}
	146	#else
	147	#define set_smp_redirect(flag) do { } while (0)
	148	#endif
	149
	150	static void __init
	151	sal_desc_platform_feature (void *p)
	152	{
	153	struct ia64_sal_desc_platform_feature *pf = p;
	154	sal_platform_features = pf->feature_mask;
	155
	156	printk(KERN_INFO "SAL Platform features:");
	157	if (!sal_platform_features) {
	158	printk(" None\n");
	159	return;
	160	}
	161
	162	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
	163	printk(" BusLock");
	164	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
	165	printk(" IRQ_Redirection");
	166	set_smp_redirect(SMP_IRQ_REDIRECTION);
	167	}
	168	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
	169	printk(" IPI_Redirection");
	170	set_smp_redirect(SMP_IPI_REDIRECTION);
	171	}
	172	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
	173	printk(" ITC_Drift");
	174	printk("\n");
	175	}
	176
	177	#ifdef CONFIG_SMP
	178	static void __init
	179	sal_desc_ap_wakeup (void *p)
	180	{
	181	struct ia64_sal_desc_ap_wakeup *ap = p;
	182
	183	switch (ap->mechanism) {
	184	case IA64_SAL_AP_EXTERNAL_INT:
	185	ap_wakeup_vector = ap->vector;
	186	printk(KERN_INFO "SAL: AP wakeup using external interrupt "
	187	"vector 0x%lx\n", ap_wakeup_vector);
	188	break;
	189	default:
	190	printk(KERN_ERR "SAL: AP wakeup mechanism unsupported!\n");
	191	break;
	192	}
	193	}
	194
	195	static void __init
	196	chk_nointroute_opt(void)
	197	{
	198	char *cp;
1da177e4	199
a8d91b84	200	for (cp = boot_command_line; *cp; ) {
1da177e4 LT	201	if (memcmp(cp, "nointroute", 10) == 0) {
	202	no_int_routing = 1;
	203	printk ("no_int_routing on\n");
	204	break;
	205	} else {
	206	while (cp != ' ' && cp)
	207	++cp;
	208	while (*cp == ' ')
	209	++cp;
	210	}
	211	}
	212	}
	213
	214	#else
	215	static void __init sal_desc_ap_wakeup(void *p) { }
	216	#endif
	217
a5878691 BH	218	/*
	219	* HP rx5670 firmware polls for interrupts during SAL_CACHE_FLUSH by reading
	220	* cr.ivr, but it never writes cr.eoi. This leaves any interrupt marked as
	221	* "in-service" and masks other interrupts of equal or lower priority.
	222	*
	223	* HP internal defect reports: F1859, F2775, F3031.
	224	*/
	225	static int sal_cache_flush_drops_interrupts;
	226
f13ae30e AC	227	static int __init
	228	force_pal_cache_flush(char *str)
	229	{
	230	sal_cache_flush_drops_interrupts = 1;
	231	return 0;
	232	}
	233	early_param("force_pal_cache_flush", force_pal_cache_flush);
	234
fa1d19e5	235	void __init
a5878691 BH	236	check_sal_cache_flush (void)
a5878691 BH	237	{
9ba89334	238	unsigned long flags;
a5878691	239	int cpu;
fa1d19e5 TH	240	u64 vector, cache_type = 3;
fa1d19e5 TH	241	struct ia64_sal_retval isrv;
a5878691	242
f13ae30e AC	243	if (sal_cache_flush_drops_interrupts)
	244	return;
	245
a5878691 BH	246	cpu = get_cpu();
	247	local_irq_save(flags);
	248
	249	/*
3463a93d AC	250	* Send ourselves a timer interrupt, wait until it's reported, and see
3463a93d AC	251	* if SAL_CACHE_FLUSH drops it.
a5878691	252	*/
05933aac	253	ia64_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
a5878691 BH	254
	255	while (!ia64_get_irr(IA64_TIMER_VECTOR))
	256	cpu_relax();
	257
fa1d19e5 TH	258	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
	259
	260	if (isrv.status)
	261	printk(KERN_ERR "SAL_CAL_FLUSH failed with %ld\n", isrv.status);
a5878691 BH	262
	263	if (ia64_get_irr(IA64_TIMER_VECTOR)) {
	264	vector = ia64_get_ivr();
	265	ia64_eoi();
	266	WARN_ON(vector != IA64_TIMER_VECTOR);
	267	} else {
	268	sal_cache_flush_drops_interrupts = 1;
	269	printk(KERN_ERR "SAL: SAL_CACHE_FLUSH drops interrupts; "
	270	"PAL_CACHE_FLUSH will be used instead\n");
	271	ia64_eoi();
	272	}
	273
a5878691 BH	274	local_irq_restore(flags);
	275	put_cpu();
	276	}
	277
	278	s64
	279	ia64_sal_cache_flush (u64 cache_type)
	280	{
	281	struct ia64_sal_retval isrv;
	282
	283	if (sal_cache_flush_drops_interrupts) {
	284	unsigned long flags;
	285	u64 progress;
	286	s64 rc;
	287
	288	progress = 0;
	289	local_irq_save(flags);
	290	rc = ia64_pal_cache_flush(cache_type,
	291	PAL_CACHE_FLUSH_INVALIDATE, &progress, NULL);
	292	local_irq_restore(flags);
	293	return rc;
	294	}
	295
	296	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
	297	return isrv.status;
	298	}
a7d57ecf	299	EXPORT_SYMBOL_GPL(ia64_sal_cache_flush);
a5878691	300
1da177e4 LT	301	void __init
	302	ia64_sal_init (struct ia64_sal_systab *systab)
	303	{
	304	char *p;
	305	int i;
	306
	307	if (!systab) {
	308	printk(KERN_WARNING "Hmm, no SAL System Table.\n");
	309	return;
	310	}
	311
	312	if (strncmp(systab->signature, "SST_", 4) != 0)
	313	printk(KERN_ERR "bad signature in system table!");
	314
	315	check_versions(systab);
	316	#ifdef CONFIG_SMP
	317	chk_nointroute_opt();
	318	#endif
	319
	320	/* revisions are coded in BCD, so %x does the job for us */
	321	printk(KERN_INFO "SAL %x.%x: %.32s %.32s%sversion %x.%x\n",
	322	SAL_MAJOR(sal_revision), SAL_MINOR(sal_revision),
	323	systab->oem_id, systab->product_id,
	324	systab->product_id[0] ? " " : "",
	325	SAL_MAJOR(sal_version), SAL_MINOR(sal_version));
	326
	327	p = (char *) (systab + 1);
	328	for (i = 0; i < systab->entry_count; i++) {
	329	/*
	330	* The first byte of each entry type contains the type
	331	* descriptor.
	332	*/
	333	switch (*p) {
	334	case SAL_DESC_ENTRY_POINT:
	335	sal_desc_entry_point(p);
	336	break;
	337	case SAL_DESC_PLATFORM_FEATURE:
	338	sal_desc_platform_feature(p);
	339	break;
	340	case SAL_DESC_PTC:
	341	ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
	342	break;
	343	case SAL_DESC_AP_WAKEUP:
	344	sal_desc_ap_wakeup(p);
	345	break;
	346	}
	347	p += SAL_DESC_SIZE(*p);
	348	}
a5878691	349
1da177e4 LT	350	}
	351
	352	int
	353	ia64_sal_oemcall(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
	354	u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7)
	355	{
	356	if (oemfunc < IA64_SAL_OEMFUNC_MIN \|\| oemfunc > IA64_SAL_OEMFUNC_MAX)
	357	return -1;
	358	SAL_CALL(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
	359	return 0;
	360	}
	361	EXPORT_SYMBOL(ia64_sal_oemcall);
	362
	363	int
	364	ia64_sal_oemcall_nolock(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
	365	u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6,
	366	u64 arg7)
	367	{
	368	if (oemfunc < IA64_SAL_OEMFUNC_MIN \|\| oemfunc > IA64_SAL_OEMFUNC_MAX)
	369	return -1;
	370	SAL_CALL_NOLOCK(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
	371	arg7);
	372	return 0;
	373	}
	374	EXPORT_SYMBOL(ia64_sal_oemcall_nolock);
	375
	376	int
	377	ia64_sal_oemcall_reentrant(struct ia64_sal_retval *isrvp, u64 oemfunc,
	378	u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5,
	379	u64 arg6, u64 arg7)
	380	{
	381	if (oemfunc < IA64_SAL_OEMFUNC_MIN \|\| oemfunc > IA64_SAL_OEMFUNC_MAX)
	382	return -1;
	383	SAL_CALL_REENTRANT(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
	384	arg7);
	385	return 0;
	386	}
	387	EXPORT_SYMBOL(ia64_sal_oemcall_reentrant);
a7d57ecf ZX	388
	389	long
	390	ia64_sal_freq_base (unsigned long which, unsigned long *ticks_per_second,
	391	unsigned long *drift_info)
	392	{
	393	struct ia64_sal_retval isrv;
	394
	395	SAL_CALL(isrv, SAL_FREQ_BASE, which, 0, 0, 0, 0, 0, 0);
	396	*ticks_per_second = isrv.v0;
	397	*drift_info = isrv.v1;
	398	return isrv.status;
	399	}
	400	EXPORT_SYMBOL_GPL(ia64_sal_freq_base);