Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * System Abstraction Layer (SAL) interface routines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *	David Mosberger-Tang <davidm@hpl.hp.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 1999 VA Linux Systems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <asm/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <asm/sal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <asm/pal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <asm/xtp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  __cacheline_aligned DEFINE_SPINLOCK(sal_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) unsigned long sal_platform_features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) unsigned short sal_revision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) unsigned short sal_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define SAL_MAJOR(x) ((x) >> 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define SAL_MINOR(x) ((x) & 0xff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	void *addr;	/* function entry point */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	void *gpval;	/* gp value to use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) } pdesc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) static long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) default_handler (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) ia64_sal_handler ia64_sal = (ia64_sal_handler) default_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) ia64_sal_desc_ptc_t *ia64_ptc_domain_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) ia64_sal_strerror (long status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	const char *str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	      case 0: str = "Call completed without error"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	      case 1: str = "Effect a warm boot of the system to complete "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 			      "the update"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	      case -1: str = "Not implemented"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	      case -2: str = "Invalid argument"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	      case -3: str = "Call completed with error"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	      case -4: str = "Virtual address not registered"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	      case -5: str = "No information available"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	      case -6: str = "Insufficient space to add the entry"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	      case -7: str = "Invalid entry_addr value"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	      case -8: str = "Invalid interrupt vector"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	      case -9: str = "Requested memory not available"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	      case -10: str = "Unable to write to the NVM device"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	      case -11: str = "Invalid partition type specified"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	      case -12: str = "Invalid NVM_Object id specified"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	      case -13: str = "NVM_Object already has the maximum number "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 				"of partitions"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	      case -14: str = "Insufficient space in partition for the "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 				"requested write sub-function"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	      case -15: str = "Insufficient data buffer space for the "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 				"requested read record sub-function"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	      case -16: str = "Scratch buffer required for the write/delete "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 				"sub-function"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	      case -17: str = "Insufficient space in the NVM_Object for the "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 				"requested create sub-function"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	      case -18: str = "Invalid value specified in the partition_rec "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 				"argument"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	      case -19: str = "Record oriented I/O not supported for this "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 				"partition"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	      case -20: str = "Bad format of record to be written or "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 				"required keyword variable not "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 				"specified"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	      default: str = "Unknown SAL status code"; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	return str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) ia64_sal_handler_init (void *entry_point, void *gpval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	/* fill in the SAL procedure descriptor and point ia64_sal to it: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	pdesc.addr = entry_point;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	pdesc.gpval = gpval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	ia64_sal = (ia64_sal_handler) &pdesc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) static void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) check_versions (struct ia64_sal_systab *systab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	sal_revision = (systab->sal_rev_major << 8) | systab->sal_rev_minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	sal_version = (systab->sal_b_rev_major << 8) | systab->sal_b_rev_minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	/* Check for broken firmware */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	if ((sal_revision == SAL_VERSION_CODE(49, 29))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	    && (sal_version == SAL_VERSION_CODE(49, 29)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		 * Old firmware for zx2000 prototypes have this weird version number,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		 * reset it to something sane.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		sal_revision = SAL_VERSION_CODE(2, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		sal_version = SAL_VERSION_CODE(0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) sal_desc_entry_point (void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	struct ia64_sal_desc_entry_point *ep = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	ia64_pal_handler_init(__va(ep->pal_proc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #ifdef CONFIG_SMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) set_smp_redirect (int flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #ifndef CONFIG_HOTPLUG_CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (no_int_routing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		smp_int_redirect &= ~flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		smp_int_redirect |= flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	 * For CPU Hotplug we dont want to do any chipset supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	 * interrupt redirection. The reason is this would require that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	 * All interrupts be stopped and hard bind the irq to a cpu.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	 * Later when the interrupt is fired we need to set the redir hint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	 * on again in the vector. This is cumbersome for something that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	 * user mode irq balancer will solve anyways.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	no_int_routing=1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	smp_int_redirect &= ~flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #define set_smp_redirect(flag)	do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) sal_desc_platform_feature (void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct ia64_sal_desc_platform_feature *pf = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	sal_platform_features = pf->feature_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	printk(KERN_INFO "SAL Platform features:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	if (!sal_platform_features) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		printk(" None\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		printk(" BusLock");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		printk(" IRQ_Redirection");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		set_smp_redirect(SMP_IRQ_REDIRECTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		printk(" IPI_Redirection");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		set_smp_redirect(SMP_IPI_REDIRECTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		printk(" ITC_Drift");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #ifdef CONFIG_SMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) sal_desc_ap_wakeup (void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct ia64_sal_desc_ap_wakeup *ap = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	switch (ap->mechanism) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	case IA64_SAL_AP_EXTERNAL_INT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		ap_wakeup_vector = ap->vector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		printk(KERN_INFO "SAL: AP wakeup using external interrupt "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 				"vector 0x%lx\n", ap_wakeup_vector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		printk(KERN_ERR "SAL: AP wakeup mechanism unsupported!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) static void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) chk_nointroute_opt(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	char *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	for (cp = boot_command_line; *cp; ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		if (memcmp(cp, "nointroute", 10) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			no_int_routing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			printk ("no_int_routing on\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			while (*cp != ' ' && *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 				++cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			while (*cp == ' ')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 				++cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static void __init sal_desc_ap_wakeup(void *p) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)  * HP rx5670 firmware polls for interrupts during SAL_CACHE_FLUSH by reading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)  * cr.ivr, but it never writes cr.eoi.  This leaves any interrupt marked as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)  * "in-service" and masks other interrupts of equal or lower priority.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)  * HP internal defect reports: F1859, F2775, F3031.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int sal_cache_flush_drops_interrupts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) force_pal_cache_flush(char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	sal_cache_flush_drops_interrupts = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) early_param("force_pal_cache_flush", force_pal_cache_flush);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) check_sal_cache_flush (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	int cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	u64 vector, cache_type = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	struct ia64_sal_retval isrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	if (sal_cache_flush_drops_interrupts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	cpu = get_cpu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	 * Send ourselves a timer interrupt, wait until it's reported, and see
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	 * if SAL_CACHE_FLUSH drops it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	ia64_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	while (!ia64_get_irr(IA64_TIMER_VECTOR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		cpu_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	if (isrv.status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		printk(KERN_ERR "SAL_CAL_FLUSH failed with %ld\n", isrv.status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	if (ia64_get_irr(IA64_TIMER_VECTOR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		vector = ia64_get_ivr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		ia64_eoi();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		WARN_ON(vector != IA64_TIMER_VECTOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		sal_cache_flush_drops_interrupts = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		printk(KERN_ERR "SAL: SAL_CACHE_FLUSH drops interrupts; "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 			"PAL_CACHE_FLUSH will be used instead\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		ia64_eoi();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	put_cpu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) s64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) ia64_sal_cache_flush (u64 cache_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	struct ia64_sal_retval isrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	if (sal_cache_flush_drops_interrupts) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 		unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		u64 progress;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 		s64 rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		progress = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		rc = ia64_pal_cache_flush(cache_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 			PAL_CACHE_FLUSH_INVALIDATE, &progress, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 		local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	return isrv.status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) EXPORT_SYMBOL_GPL(ia64_sal_cache_flush);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) void __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) ia64_sal_init (struct ia64_sal_systab *systab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	if (!systab) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		printk(KERN_WARNING "Hmm, no SAL System Table.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	if (strncmp(systab->signature, "SST_", 4) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		printk(KERN_ERR "bad signature in system table!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	check_versions(systab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) #ifdef CONFIG_SMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	chk_nointroute_opt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	/* revisions are coded in BCD, so %x does the job for us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	printk(KERN_INFO "SAL %x.%x: %.32s %.32s%sversion %x.%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 			SAL_MAJOR(sal_revision), SAL_MINOR(sal_revision),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 			systab->oem_id, systab->product_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 			systab->product_id[0] ? " " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 			SAL_MAJOR(sal_version), SAL_MINOR(sal_version));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	p = (char *) (systab + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	for (i = 0; i < systab->entry_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 		 * The first byte of each entry type contains the type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		 * descriptor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		switch (*p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		case SAL_DESC_ENTRY_POINT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 			sal_desc_entry_point(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 		case SAL_DESC_PLATFORM_FEATURE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 			sal_desc_platform_feature(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		case SAL_DESC_PTC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 			ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		case SAL_DESC_AP_WAKEUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 			sal_desc_ap_wakeup(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		p += SAL_DESC_SIZE(*p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) ia64_sal_oemcall(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		 u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	SAL_CALL(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) EXPORT_SYMBOL(ia64_sal_oemcall);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) ia64_sal_oemcall_nolock(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 			u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 			u64 arg7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	SAL_CALL_NOLOCK(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 			arg7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) EXPORT_SYMBOL(ia64_sal_oemcall_nolock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) ia64_sal_oemcall_reentrant(struct ia64_sal_retval *isrvp, u64 oemfunc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 			   u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 			   u64 arg6, u64 arg7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	SAL_CALL_REENTRANT(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 			   arg7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) EXPORT_SYMBOL(ia64_sal_oemcall_reentrant);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) ia64_sal_freq_base (unsigned long which, unsigned long *ticks_per_second,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 		    unsigned long *drift_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	struct ia64_sal_retval isrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	SAL_CALL(isrv, SAL_FREQ_BASE, which, 0, 0, 0, 0, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	*ticks_per_second = isrv.v0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	*drift_info = isrv.v1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	return isrv.status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) EXPORT_SYMBOL_GPL(ia64_sal_freq_base);