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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Enable CONFIG_SMP compile and link
# HG changeset patch
# User djm@xxxxxxxxxxxxxxx
# Node ID f5c4042212b013d7750e5270d98c047c8419e5a7
# Parent 2b95125015a59eeb086b3748f9415ac440133b4d
Enable CONFIG_SMP compile and link
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/hyperprivop.S
--- a/xen/arch/ia64/hyperprivop.S Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/hyperprivop.S Tue Aug 30 18:41:54 2005
@@ -25,6 +25,11 @@
#define FAST_SSM_I
#define FAST_PTC_GA
#undef RFI_TO_INTERRUPT // not working yet
+#endif
+
+#ifdef CONFIG_SMP
+#warning "FIXME: ptc.ga instruction requires spinlock for SMP"
+#undef FAST_PTC_GA
#endif
// FIXME: turn off for now... but NaTs may crash Xen so re-enable soon!
@@ -1506,9 +1511,6 @@
END(hyper_thash)
ENTRY(hyper_ptc_ga)
-#ifdef CONFIG_SMP
-FIXME: ptc.ga instruction requires spinlock for SMP
-#endif
#ifndef FAST_PTC_GA
br.spnt.few dispatch_break_fault ;;
#endif
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/irq.c
--- a/xen/arch/ia64/irq.c Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/irq.c Tue Aug 30 18:41:54 2005
@@ -266,8 +266,12 @@
#ifdef CONFIG_SMP
inline void synchronize_irq(unsigned int irq)
{
- while (irq_descp(irq)->status & IRQ_INPROGRESS)
+#ifndef XEN
+ struct irq_desc *desc = irq_desc + irq;
+
+ while (desc->status & IRQ_INPROGRESS)
cpu_relax();
+#endif
}
EXPORT_SYMBOL(synchronize_irq);
#endif
@@ -1012,6 +1016,8 @@
return 0;
}
+#ifndef XEN
+
static struct proc_dir_entry * root_irq_dir;
static struct proc_dir_entry * irq_dir [NR_IRQS];
@@ -1121,6 +1127,7 @@
#endif /* CONFIG_SMP */
+#endif
#ifdef CONFIG_HOTPLUG_CPU
unsigned int vectors_in_migration[NR_IRQS];
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/linux-xen/irq_ia64.c
--- a/xen/arch/ia64/linux-xen/irq_ia64.c Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/linux-xen/irq_ia64.c Tue Aug 30 18:41:54 2005
@@ -323,7 +323,9 @@
static struct irqaction ipi_irqaction = {
.handler = handle_IPI,
+#ifndef XEN
.flags = SA_INTERRUPT,
+#endif
.name = "IPI"
};
#endif
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/linux-xen/mm_contig.c
--- a/xen/arch/ia64/linux-xen/mm_contig.c Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/linux-xen/mm_contig.c Tue Aug 30 18:41:54 2005
@@ -191,8 +191,13 @@
* get_zeroed_page().
*/
if (smp_processor_id() == 0) {
+#ifdef XEN
+ cpu_data = alloc_xenheap_pages(PERCPU_PAGE_SIZE -
+ PAGE_SIZE + get_order(NR_CPUS));
+#else
cpu_data = __alloc_bootmem(PERCPU_PAGE_SIZE * NR_CPUS,
PERCPU_PAGE_SIZE,
__pa(MAX_DMA_ADDRESS));
+#endif
for (cpu = 0; cpu < NR_CPUS; cpu++) {
memcpy(cpu_data, __phys_per_cpu_start, __per_cpu_end -
__per_cpu_start);
__per_cpu_offset[cpu] = (char *) cpu_data -
__per_cpu_start;
@@ -204,6 +209,7 @@
}
#endif /* CONFIG_SMP */
+#ifndef XEN
static int
count_pages (u64 start, u64 end, void *arg)
{
@@ -229,7 +235,6 @@
* Set up the page tables.
*/
-#ifndef XEN
void
paging_init (void)
{
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/process.c
--- a/xen/arch/ia64/process.c Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/process.c Tue Aug 30 18:41:54 2005
@@ -224,7 +224,7 @@
regs->cr_iip = ((unsigned long) PSCBX(v,iva) + vector) & ~0xffUL;
regs->cr_ipsr = (regs->cr_ipsr & ~DELIVER_PSR_CLR) | DELIVER_PSR_SET;
#ifdef CONFIG_SMP
-#error "sharedinfo doesn't handle smp yet"
+#warning "SMP FIXME: sharedinfo doesn't handle smp yet, need page per vcpu"
#endif
regs->r31 = &(((mapped_regs_t *)SHARED_ARCHINFO_ADDR)->ipsr);
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/xensetup.c
--- a/xen/arch/ia64/xensetup.c Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/xensetup.c Tue Aug 30 18:41:54 2005
@@ -26,6 +26,8 @@
char saved_command_line[COMMAND_LINE_SIZE];
struct vcpu *idle_task[NR_CPUS] = { &idle0_vcpu };
+
+cpumask_t cpu_present_map;
#ifdef CLONE_DOMAIN0
struct domain *clones[CLONE_DOMAIN0];
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/xentime.c
--- a/xen/arch/ia64/xentime.c Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/xentime.c Tue Aug 30 18:41:54 2005
@@ -31,6 +31,10 @@
#include <linux/jiffies.h> // not included by xen/sched.h
#endif
#include <xen/softirq.h>
+
+#ifdef XEN
+seqlock_t xtime_lock __cacheline_aligned_in_smp = SEQLOCK_UNLOCKED;
+#endif
#define TIME_KEEPER_ID 0
extern unsigned long wall_jiffies;
diff -r 2b95125015a5 -r f5c4042212b0 xen/include/asm-ia64/config.h
--- a/xen/include/asm-ia64/config.h Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/config.h Tue Aug 30 18:41:54 2005
@@ -20,6 +20,22 @@
#define CONFIG_EFI_PCDP
#define CONFIG_SERIAL_SGI_L1_CONSOLE
+
+#undef CONFIG_XEN_SMP
+
+#ifdef CONFIG_XEN_SMP
+#define CONFIG_SMP 1
+#define NR_CPUS 2
+#define CONFIG_NR_CPUS 2
+#else
+#undef CONFIG_SMP
+#define NR_CPUS 1
+#define CONFIG_NR_CPUS 1
+#endif
+//#define NR_CPUS 16
+//#define CONFIG_NR_CPUS 16
+//leave SMP for a later time
+//#undef CONFIG_SMP
#ifndef __ASSEMBLY__
@@ -75,13 +91,16 @@
//#define __cond_lock(x) (x)
#define __must_check
#define __deprecated
+#ifndef RELOC_HIDE
+# define RELOC_HIDE(ptr, off) \
+ ({ unsigned long __ptr; \
+ __ptr = (unsigned long) (ptr); \
+ (typeof(ptr)) (__ptr + (off)); })
+#endif
// xen/include/asm/config.h
#define HZ 100
-// leave SMP for a later time
-#define NR_CPUS 1
-//#define NR_CPUS 16
-//#define CONFIG_NR_CPUS 16
+// FIXME SMP: leave SMP for a later time
#define barrier() __asm__ __volatile__("": : :"memory")
///////////////////////////////////////////////////////////////
@@ -99,13 +118,18 @@
// from include/asm-ia64/smp.h
#ifdef CONFIG_SMP
-#error "Lots of things to fix to enable CONFIG_SMP!"
-#endif
+#warning "Lots of things to fix to enable CONFIG_SMP!"
+#endif
+// FIXME SMP
#define get_cpu() 0
#define put_cpu() do {} while(0)
// needed for common/dom0_ops.c until hyperthreading is supported
+#ifdef CONFIG_SMP
+extern int smp_num_siblings;
+#else
#define smp_num_siblings 1
+#endif
// from linux/include/linux/mm.h
struct page;
@@ -253,10 +277,6 @@
#define CONFIG_MCKINLEY
-//#define CONFIG_SMP 1
-//#define CONFIG_NR_CPUS 2
-//leave SMP for a later time
-#undef CONFIG_SMP
#undef CONFIG_X86_LOCAL_APIC
#undef CONFIG_X86_IO_APIC
#undef CONFIG_X86_L1_CACHE_SHIFT
diff -r 2b95125015a5 -r f5c4042212b0 xen/include/asm-ia64/linux-xen/asm/pal.h
--- a/xen/include/asm-ia64/linux-xen/asm/pal.h Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/linux-xen/asm/pal.h Tue Aug 30 18:41:54 2005
@@ -67,6 +67,7 @@
#define PAL_REGISTER_INFO 39 /* return AR and CR register
information*/
#define PAL_SHUTDOWN 40 /* enter processor shutdown state */
#define PAL_PREFETCH_VISIBILITY 41 /* Make Processor Prefetches
Visible */
+#define PAL_LOGICAL_TO_PHYSICAL 42 /* returns information on logical to
physical processor mapping */
#define PAL_COPY_PAL 256 /* relocate PAL procedures and PAL PMI
*/
#define PAL_HALT_INFO 257 /* return the low power capabilities of
processor */
@@ -1559,7 +1560,76 @@
return iprv.status;
}
+/* data structure for getting information on logical to physical mappings */
+typedef union pal_log_overview_u {
+ struct {
+ u64 num_log :16, /* Total number of logical
+ * processors on this die
+ */
+ tpc :8, /* Threads per core */
+ reserved3 :8, /* Reserved */
+ cpp :8, /* Cores per processor */
+ reserved2 :8, /* Reserved */
+ ppid :8, /* Physical processor ID */
+ reserved1 :8; /* Reserved */
+ } overview_bits;
+ u64 overview_data;
+} pal_log_overview_t;
+
+typedef union pal_proc_n_log_info1_u{
+ struct {
+ u64 tid :16, /* Thread id */
+ reserved2 :16, /* Reserved */
+ cid :16, /* Core id */
+ reserved1 :16; /* Reserved */
+ } ppli1_bits;
+ u64 ppli1_data;
+} pal_proc_n_log_info1_t;
+
+typedef union pal_proc_n_log_info2_u {
+ struct {
+ u64 la :16, /* Logical address */
+ reserved :48; /* Reserved */
+ } ppli2_bits;
+ u64 ppli2_data;
+} pal_proc_n_log_info2_t;
+
+typedef struct pal_logical_to_physical_s
+{
+ pal_log_overview_t overview;
+ pal_proc_n_log_info1_t ppli1;
+ pal_proc_n_log_info2_t ppli2;
+} pal_logical_to_physical_t;
+
+#define overview_num_log overview.overview_bits.num_log
+#define overview_tpc overview.overview_bits.tpc
+#define overview_cpp overview.overview_bits.cpp
+#define overview_ppid overview.overview_bits.ppid
+#define log1_tid ppli1.ppli1_bits.tid
+#define log1_cid ppli1.ppli1_bits.cid
+#define log2_la ppli2.ppli2_bits.la
+
+/* Get information on logical to physical processor mappings. */
+static inline s64
+ia64_pal_logical_to_phys(u64 proc_number, pal_logical_to_physical_t *mapping)
+{
+ struct ia64_pal_retval iprv;
+
+ PAL_CALL(iprv, PAL_LOGICAL_TO_PHYSICAL, proc_number, 0, 0);
+
+ if (iprv.status == PAL_STATUS_SUCCESS)
+ {
+ if (proc_number == 0)
+ mapping->overview.overview_data = iprv.v0;
+ mapping->ppli1.ppli1_data = iprv.v1;
+ mapping->ppli2.ppli2_data = iprv.v2;
+ }
+
+ return iprv.status;
+}
+#ifdef XEN
#include <asm/vmx_pal.h>
+#endif
#endif /* __ASSEMBLY__ */
#endif /* _ASM_IA64_PAL_H */
diff -r 2b95125015a5 -r f5c4042212b0
xen/include/asm-ia64/linux-xen/asm/processor.h
--- a/xen/include/asm-ia64/linux-xen/asm/processor.h Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/linux-xen/asm/processor.h Tue Aug 30 18:41:54 2005
@@ -164,6 +164,13 @@
#ifdef CONFIG_SMP
__u64 loops_per_jiffy;
int cpu;
+ __u32 socket_id; /* physical processor socket id */
+ __u16 core_id; /* core id */
+ __u16 thread_id; /* thread id */
+ __u16 num_log; /* Total number of logical processors on
+ * this socket that were successfully booted */
+ __u8 cores_per_socket; /* Cores per processor socket */
+ __u8 threads_per_core; /* Threads per core */
#endif
/* CPUID-derived information: */
diff -r 2b95125015a5 -r f5c4042212b0 xen/include/asm-ia64/linux-xen/asm/system.h
--- a/xen/include/asm-ia64/linux-xen/asm/system.h Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/linux-xen/asm/system.h Tue Aug 30 18:41:54 2005
@@ -247,9 +247,9 @@
*/
# define switch_to(prev,next,last) do {
\
if (ia64_psr(ia64_task_regs(prev))->mfh &&
ia64_is_local_fpu_owner(prev)) { \
- ia64_psr(ia64_task_regs(prev))->mfh = 0;
\
- (prev)->thread.flags |= IA64_THREAD_FPH_VALID;
\
- __ia64_save_fpu((prev)->thread.fph);
\
+ /* ia64_psr(ia64_task_regs(prev))->mfh = 0; */
\
+ /* (prev)->thread.flags |= IA64_THREAD_FPH_VALID; */
\
+ /* __ia64_save_fpu((prev)->thread.fph); */
\
}
\
__switch_to(prev, next, last);
\
} while (0)
diff -r 2b95125015a5 -r f5c4042212b0 xen/include/asm-ia64/linux/asm/sal.h
--- a/xen/include/asm-ia64/linux/asm/sal.h Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/linux/asm/sal.h Tue Aug 30 18:41:54 2005
@@ -91,6 +91,7 @@
#define SAL_PCI_CONFIG_READ 0x01000010
#define SAL_PCI_CONFIG_WRITE 0x01000011
#define SAL_FREQ_BASE 0x01000012
+#define SAL_PHYSICAL_ID_INFO 0x01000013
#define SAL_UPDATE_PAL 0x01000020
@@ -815,6 +816,17 @@
return isrv.status;
}
+/* Get physical processor die mapping in the platform. */
+static inline s64
+ia64_sal_physical_id_info(u16 *splid)
+{
+ struct ia64_sal_retval isrv;
+ SAL_CALL(isrv, SAL_PHYSICAL_ID_INFO, 0, 0, 0, 0, 0, 0, 0);
+ if (splid)
+ *splid = isrv.v0;
+ return isrv.status;
+}
+
extern unsigned long sal_platform_features;
extern int (*salinfo_platform_oemdata)(const u8 *, u8 **, u64 *);
@@ -832,6 +844,44 @@
u64, u64, u64, u64, u64);
extern int ia64_sal_oemcall_reentrant(struct ia64_sal_retval *, u64, u64, u64,
u64, u64, u64, u64, u64);
+#ifdef CONFIG_HOTPLUG_CPU
+/*
+ * System Abstraction Layer Specification
+ * Section 3.2.5.1: OS_BOOT_RENDEZ to SAL return State.
+ * Note: region regs are stored first in head.S _start. Hence they must
+ * stay up front.
+ */
+struct sal_to_os_boot {
+ u64 rr[8]; /* Region Registers */
+ u64 br[6]; /* br0: return addr into SAL boot rendez
routine */
+ u64 gr1; /* SAL:GP */
+ u64 gr12; /* SAL:SP */
+ u64 gr13; /* SAL: Task Pointer */
+ u64 fpsr;
+ u64 pfs;
+ u64 rnat;
+ u64 unat;
+ u64 bspstore;
+ u64 dcr; /* Default Control Register */
+ u64 iva;
+ u64 pta;
+ u64 itv;
+ u64 pmv;
+ u64 cmcv;
+ u64 lrr[2];
+ u64 gr[4];
+ u64 pr; /* Predicate registers */
+ u64 lc; /* Loop Count */
+ struct ia64_fpreg fp[20];
+};
+
+/*
+ * Global array allocated for NR_CPUS at boot time
+ */
+extern struct sal_to_os_boot sal_boot_rendez_state[NR_CPUS];
+
+extern void ia64_jump_to_sal(struct sal_to_os_boot *);
+#endif
extern void ia64_sal_handler_init(void *entry_point, void *gpval);
diff -r 2b95125015a5 -r f5c4042212b0 xen/include/asm-ia64/vhpt.h
--- a/xen/include/asm-ia64/vhpt.h Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/vhpt.h Tue Aug 30 18:41:54 2005
@@ -129,7 +129,7 @@
#define VHPT_CCHAIN_LOOKUP(Name, i_or_d)
#else
#ifdef CONFIG_SMP
-#error "VHPT_CCHAIN_LOOKUP needs a semaphore on the VHPT!"
+#warning "FIXME SMP: VHPT_CCHAIN_LOOKUP needs a semaphore on the VHPT!"
#endif
// VHPT_CCHAIN_LOOKUP is intended to run with psr.i+ic off
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/linux-xen/sal.c
--- /dev/null Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/linux-xen/sal.c Tue Aug 30 18:41:54 2005
@@ -0,0 +1,305 @@
+/*
+ * System Abstraction Layer (SAL) interface routines.
+ *
+ * Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@xxxxxxxxxx>
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999 Walt Drummond <drummond@xxxxxxxxxxx>
+ */
+#include <linux/config.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+
+#include <asm/page.h>
+#include <asm/sal.h>
+#include <asm/pal.h>
+#ifdef XEN
+#include <linux/smp.h>
+#endif
+
+ __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 combersome 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;
+ extern char saved_command_line[];
+
+ for (cp = saved_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
+
+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);
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/linux-xen/smp.c
--- /dev/null Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/linux-xen/smp.c Tue Aug 30 18:41:54 2005
@@ -0,0 +1,427 @@
+/*
+ * SMP Support
+ *
+ * Copyright (C) 1999 Walt Drummond <drummond@xxxxxxxxxxx>
+ * Copyright (C) 1999, 2001, 2003 David Mosberger-Tang <davidm@xxxxxxxxxx>
+ *
+ * Lots of stuff stolen from arch/alpha/kernel/smp.c
+ *
+ * 01/05/16 Rohit Seth <rohit.seth@xxxxxxxxx> IA64-SMP functions. Reorganized
+ * the existing code (on the lines of x86 port).
+ * 00/09/11 David Mosberger <davidm@xxxxxxxxxx> Do loops_per_jiffy
+ * calibration on each CPU.
+ * 00/08/23 Asit Mallick <asit.k.mallick@xxxxxxxxx> fixed logical processor id
+ * 00/03/31 Rohit Seth <rohit.seth@xxxxxxxxx> Fixes for Bootstrap Processor
+ * & cpu_online_map now gets done here (instead of setup.c)
+ * 99/10/05 davidm Update to bring it in sync with new command-line
processing
+ * scheme.
+ * 10/13/00 Goutham Rao <goutham.rao@xxxxxxxxx> Updated smp_call_function and
+ * smp_call_function_single to resend IPI on timeouts
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/smp.h>
+#include <linux/kernel_stat.h>
+#include <linux/mm.h>
+#include <linux/cache.h>
+#include <linux/delay.h>
+#include <linux/efi.h>
+#include <linux/bitops.h>
+
+#include <asm/atomic.h>
+#include <asm/current.h>
+#include <asm/delay.h>
+#include <asm/machvec.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/page.h>
+#include <asm/pgalloc.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/ptrace.h>
+#include <asm/sal.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/unistd.h>
+#include <asm/mca.h>
+#ifdef XEN
+#include <asm/hw_irq.h>
+#endif
+
+#ifdef XEN
+// FIXME: MOVE ELSEWHERE
+//Huh? This seems to be used on ia64 even if !CONFIG_SMP
+void flush_tlb_mask(cpumask_t mask)
+{
+ dummy();
+}
+//#if CONFIG_SMP || IA64
+#if CONFIG_SMP
+//Huh? This seems to be used on ia64 even if !CONFIG_SMP
+void smp_send_event_check_mask(cpumask_t mask)
+{
+ dummy();
+ //send_IPI_mask(cpu_mask, EVENT_CHECK_VECTOR);
+}
+
+
+//Huh? This seems to be used on ia64 even if !CONFIG_SMP
+int try_flush_tlb_mask(cpumask_t mask)
+{
+ dummy();
+ return 1;
+}
+#endif
+#endif
+
+#ifdef CONFIG_SMP /* ifdef XEN */
+
+/*
+ * Structure and data for smp_call_function(). This is designed to minimise
static memory
+ * requirements. It also looks cleaner.
+ */
+static __cacheline_aligned DEFINE_SPINLOCK(call_lock);
+
+struct call_data_struct {
+ void (*func) (void *info);
+ void *info;
+ long wait;
+ atomic_t started;
+ atomic_t finished;
+};
+
+static volatile struct call_data_struct *call_data;
+
+#define IPI_CALL_FUNC 0
+#define IPI_CPU_STOP 1
+
+/* This needs to be cacheline aligned because it is written to by *other*
CPUs. */
+static DEFINE_PER_CPU(u64, ipi_operation) ____cacheline_aligned;
+
+extern void cpu_halt (void);
+
+void
+lock_ipi_calllock(void)
+{
+ spin_lock_irq(&call_lock);
+}
+
+void
+unlock_ipi_calllock(void)
+{
+ spin_unlock_irq(&call_lock);
+}
+
+static void
+stop_this_cpu (void)
+{
+ /*
+ * Remove this CPU:
+ */
+ cpu_clear(smp_processor_id(), cpu_online_map);
+ max_xtp();
+ local_irq_disable();
+#ifndef XEN
+ cpu_halt();
+#endif
+}
+
+void
+cpu_die(void)
+{
+ max_xtp();
+ local_irq_disable();
+#ifndef XEN
+ cpu_halt();
+#endif
+ /* Should never be here */
+ BUG();
+ for (;;);
+}
+
+irqreturn_t
+handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
+{
+ int this_cpu = get_cpu();
+ unsigned long *pending_ipis = &__ia64_per_cpu_var(ipi_operation);
+ unsigned long ops;
+
+ mb(); /* Order interrupt and bit testing. */
+ while ((ops = xchg(pending_ipis, 0)) != 0) {
+ mb(); /* Order bit clearing and data access. */
+ do {
+ unsigned long which;
+
+ which = ffz(~ops);
+ ops &= ~(1 << which);
+
+ switch (which) {
+ case IPI_CALL_FUNC:
+ {
+ struct call_data_struct *data;
+ void (*func)(void *info);
+ void *info;
+ int wait;
+
+ /* release the 'pointer lock' */
+ data = (struct call_data_struct *)
call_data;
+ func = data->func;
+ info = data->info;
+ wait = data->wait;
+
+ mb();
+ atomic_inc(&data->started);
+ /*
+ * At this point the structure may be
gone unless
+ * wait is true.
+ */
+ (*func)(info);
+
+ /* Notify the sending CPU that the task
is done. */
+ mb();
+ if (wait)
+ atomic_inc(&data->finished);
+ }
+ break;
+
+ case IPI_CPU_STOP:
+ stop_this_cpu();
+ break;
+
+ default:
+ printk(KERN_CRIT "Unknown IPI on CPU %d:
%lu\n", this_cpu, which);
+ break;
+ }
+ } while (ops);
+ mb(); /* Order data access and bit testing. */
+ }
+ put_cpu();
+ return IRQ_HANDLED;
+}
+
+/*
+ * Called with preeemption disabled.
+ */
+static inline void
+send_IPI_single (int dest_cpu, int op)
+{
+ set_bit(op, &per_cpu(ipi_operation, dest_cpu));
+ platform_send_ipi(dest_cpu, IA64_IPI_VECTOR, IA64_IPI_DM_INT, 0);
+}
+
+/*
+ * Called with preeemption disabled.
+ */
+static inline void
+send_IPI_allbutself (int op)
+{
+ unsigned int i;
+
+ for (i = 0; i < NR_CPUS; i++) {
+ if (cpu_online(i) && i != smp_processor_id())
+ send_IPI_single(i, op);
+ }
+}
+
+/*
+ * Called with preeemption disabled.
+ */
+static inline void
+send_IPI_all (int op)
+{
+ int i;
+
+ for (i = 0; i < NR_CPUS; i++)
+ if (cpu_online(i))
+ send_IPI_single(i, op);
+}
+
+/*
+ * Called with preeemption disabled.
+ */
+static inline void
+send_IPI_self (int op)
+{
+ send_IPI_single(smp_processor_id(), op);
+}
+
+/*
+ * Called with preeemption disabled.
+ */
+void
+smp_send_reschedule (int cpu)
+{
+ platform_send_ipi(cpu, IA64_IPI_RESCHEDULE, IA64_IPI_DM_INT, 0);
+}
+
+void
+smp_flush_tlb_all (void)
+{
+ on_each_cpu((void (*)(void *))local_flush_tlb_all, NULL, 1, 1);
+}
+
+void
+smp_flush_tlb_mm (struct mm_struct *mm)
+{
+ preempt_disable();
+ /* this happens for the common case of a single-threaded fork(): */
+ if (likely(mm == current->active_mm && atomic_read(&mm->mm_users) == 1))
+ {
+ local_finish_flush_tlb_mm(mm);
+ preempt_enable();
+ return;
+ }
+
+ preempt_enable();
+ /*
+ * We could optimize this further by using mm->cpu_vm_mask to track
which CPUs
+ * have been running in the address space. It's not clear that this is
worth the
+ * trouble though: to avoid races, we have to raise the IPI on the
target CPU
+ * anyhow, and once a CPU is interrupted, the cost of
local_flush_tlb_all() is
+ * rather trivial.
+ */
+ on_each_cpu((void (*)(void *))local_finish_flush_tlb_mm, mm, 1, 1);
+}
+
+/*
+ * Run a function on another CPU
+ * <func> The function to run. This must be fast and non-blocking.
+ * <info> An arbitrary pointer to pass to the function.
+ * <nonatomic> Currently unused.
+ * <wait> If true, wait until function has completed on other CPUs.
+ * [RETURNS] 0 on success, else a negative status code.
+ *
+ * Does not return until the remote CPU is nearly ready to execute <func>
+ * or is or has executed.
+ */
+
+int
+smp_call_function_single (int cpuid, void (*func) (void *info), void *info,
int nonatomic,
+ int wait)
+{
+ struct call_data_struct data;
+ int cpus = 1;
+ int me = get_cpu(); /* prevent preemption and reschedule on another
processor */
+
+ if (cpuid == me) {
+ printk(KERN_INFO "%s: trying to call self\n", __FUNCTION__);
+ put_cpu();
+ return -EBUSY;
+ }
+
+ data.func = func;
+ data.info = info;
+ atomic_set(&data.started, 0);
+ data.wait = wait;
+ if (wait)
+ atomic_set(&data.finished, 0);
+
+#ifdef XEN
+ spin_lock(&call_lock);
+#else
+ spin_lock_bh(&call_lock);
+#endif
+
+ call_data = &data;
+ mb(); /* ensure store to call_data precedes setting of IPI_CALL_FUNC
*/
+ send_IPI_single(cpuid, IPI_CALL_FUNC);
+
+ /* Wait for response */
+ while (atomic_read(&data.started) != cpus)
+ cpu_relax();
+
+ if (wait)
+ while (atomic_read(&data.finished) != cpus)
+ cpu_relax();
+ call_data = NULL;
+
+#ifdef XEN
+ spin_unlock(&call_lock);
+#else
+ spin_unlock_bh(&call_lock);
+#endif
+ put_cpu();
+ return 0;
+}
+EXPORT_SYMBOL(smp_call_function_single);
+
+/*
+ * this function sends a 'generic call function' IPI to all other CPUs
+ * in the system.
+ */
+
+/*
+ * [SUMMARY] Run a function on all other CPUs.
+ * <func> The function to run. This must be fast and non-blocking.
+ * <info> An arbitrary pointer to pass to the function.
+ * <nonatomic> currently unused.
+ * <wait> If true, wait (atomically) until function has completed on
other CPUs.
+ * [RETURNS] 0 on success, else a negative status code.
+ *
+ * Does not return until remote CPUs are nearly ready to execute <func> or are
or have
+ * executed.
+ *
+ * You must not call this function with disabled interrupts or from a
+ * hardware interrupt handler or from a bottom half handler.
+ */
+int
+smp_call_function (void (*func) (void *info), void *info, int nonatomic, int
wait)
+{
+ struct call_data_struct data;
+ int cpus = num_online_cpus()-1;
+
+ if (!cpus)
+ return 0;
+
+ /* Can deadlock when called with interrupts disabled */
+#ifdef XEN
+ if (irqs_disabled()) panic("smp_call_function called with interrupts
disabled\n");
+#else
+ WARN_ON(irqs_disabled());
+#endif
+
+ data.func = func;
+ data.info = info;
+ atomic_set(&data.started, 0);
+ data.wait = wait;
+ if (wait)
+ atomic_set(&data.finished, 0);
+
+ spin_lock(&call_lock);
+
+ call_data = &data;
+ mb(); /* ensure store to call_data precedes setting of IPI_CALL_FUNC
*/
+ send_IPI_allbutself(IPI_CALL_FUNC);
+
+ /* Wait for response */
+ while (atomic_read(&data.started) != cpus)
+ cpu_relax();
+
+ if (wait)
+ while (atomic_read(&data.finished) != cpus)
+ cpu_relax();
+ call_data = NULL;
+
+ spin_unlock(&call_lock);
+ return 0;
+}
+EXPORT_SYMBOL(smp_call_function);
+
+/*
+ * this function calls the 'stop' function on all other CPUs in the system.
+ */
+void
+smp_send_stop (void)
+{
+ send_IPI_allbutself(IPI_CPU_STOP);
+}
+
+int __init
+setup_profiling_timer (unsigned int multiplier)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_SMP ifdef XEN */
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/linux-xen/smpboot.c
--- /dev/null Fri Aug 26 13:06:49 2005
+++ b/xen/arch/ia64/linux-xen/smpboot.c Tue Aug 30 18:41:54 2005
@@ -0,0 +1,903 @@
+/*
+ * SMP boot-related support
+ *
+ * Copyright (C) 1998-2003, 2005 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@xxxxxxxxxx>
+ * Copyright (C) 2001, 2004-2005 Intel Corp
+ * Rohit Seth <rohit.seth@xxxxxxxxx>
+ * Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
+ * Gordon Jin <gordon.jin@xxxxxxxxx>
+ * Ashok Raj <ashok.raj@xxxxxxxxx>
+ *
+ * 01/05/16 Rohit Seth <rohit.seth@xxxxxxxxx> Moved SMP booting functions
from smp.c to here.
+ * 01/04/27 David Mosberger <davidm@xxxxxxxxxx> Added ITC synching code.
+ * 02/07/31 David Mosberger <davidm@xxxxxxxxxx> Switch over to
hotplug-CPU boot-sequence.
+ * smp_boot_cpus()/smp_commence()
is replaced by
+ *
smp_prepare_cpus()/__cpu_up()/smp_cpus_done().
+ * 04/06/21 Ashok Raj <ashok.raj@xxxxxxxxx> Added CPU Hotplug Support
+ * 04/12/26 Jin Gordon <gordon.jin@xxxxxxxxx>
+ * 04/12/26 Rohit Seth <rohit.seth@xxxxxxxxx>
+ * Add multi-threading and
multi-core detection
+ * 05/01/30 Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
+ * Setup cpu_sibling_map and
cpu_core_map
+ */
+#include <linux/config.h>
+
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/bootmem.h>
+#include <linux/cpu.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/mm.h>
+#include <linux/notifier.h> /* hg add me */
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/spinlock.h>
+#include <linux/efi.h>
+#include <linux/percpu.h>
+#include <linux/bitops.h>
+
+#include <asm/atomic.h>
+#include <asm/cache.h>
+#include <asm/current.h>
+#include <asm/delay.h>
+#include <asm/ia32.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/machvec.h>
+#include <asm/mca.h>
+#include <asm/page.h>
+#include <asm/pgalloc.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/ptrace.h>
+#include <asm/sal.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/unistd.h>
+
+#ifdef XEN
+#include <asm/hw_irq.h>
+int ht_per_core = 1;
+#endif
+
+#ifdef CONFIG_SMP /* ifdef XEN */
+
+#define SMP_DEBUG 0
+
+#if SMP_DEBUG
+#define Dprintk(x...) printk(x)
+#else
+#define Dprintk(x...)
+#endif
+
+#ifdef CONFIG_HOTPLUG_CPU
+/*
+ * Store all idle threads, this can be reused instead of creating
+ * a new thread. Also avoids complicated thread destroy functionality
+ * for idle threads.
+ */
+struct task_struct *idle_thread_array[NR_CPUS];
+
+/*
+ * Global array allocated for NR_CPUS at boot time
+ */
+struct sal_to_os_boot sal_boot_rendez_state[NR_CPUS];
+
+/*
+ * start_ap in head.S uses this to store current booting cpu
+ * info.
+ */
+struct sal_to_os_boot *sal_state_for_booting_cpu = &sal_boot_rendez_state[0];
+
+#define set_brendez_area(x) (sal_state_for_booting_cpu =
&sal_boot_rendez_state[(x)]);
+
+#define get_idle_for_cpu(x) (idle_thread_array[(x)])
+#define set_idle_for_cpu(x,p) (idle_thread_array[(x)] = (p))
+
+#else
+
+#define get_idle_for_cpu(x) (NULL)
+#define set_idle_for_cpu(x,p)
+#define set_brendez_area(x)
+#endif
+
+
+/*
+ * ITC synchronization related stuff:
+ */
+#define MASTER 0
+#define SLAVE (SMP_CACHE_BYTES/8)
+
+#define NUM_ROUNDS 64 /* magic value */
+#define NUM_ITERS 5 /* likewise */
+
+static DEFINE_SPINLOCK(itc_sync_lock);
+static volatile unsigned long go[SLAVE + 1];
+
+#define DEBUG_ITC_SYNC 0
+
+extern void __devinit calibrate_delay (void);
+extern void start_ap (void);
+extern unsigned long ia64_iobase;
+
+task_t *task_for_booting_cpu;
+
+/*
+ * State for each CPU
+ */
+DEFINE_PER_CPU(int, cpu_state);
+
+/* Bitmasks of currently online, and possible CPUs */
+cpumask_t cpu_online_map;
+EXPORT_SYMBOL(cpu_online_map);
+cpumask_t cpu_possible_map;
+EXPORT_SYMBOL(cpu_possible_map);
+
+cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
+cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
+int smp_num_siblings = 1;
+int smp_num_cpucores = 1;
+
+/* which logical CPU number maps to which CPU (physical APIC ID) */
+volatile int ia64_cpu_to_sapicid[NR_CPUS];
+EXPORT_SYMBOL(ia64_cpu_to_sapicid);
+
+static volatile cpumask_t cpu_callin_map;
+
+struct smp_boot_data smp_boot_data __initdata;
+
+unsigned long ap_wakeup_vector = -1; /* External Int use to wakeup APs */
+
+char __initdata no_int_routing;
+
+unsigned char smp_int_redirect; /* are INT and IPI redirectable by the
chipset? */
+
+static int __init
+nointroute (char *str)
+{
+ no_int_routing = 1;
+ printk ("no_int_routing on\n");
+ return 1;
+}
+
+__setup("nointroute", nointroute);
+
+void
+sync_master (void *arg)
+{
+ unsigned long flags, i;
+
+ go[MASTER] = 0;
+
+ local_irq_save(flags);
+ {
+ for (i = 0; i < NUM_ROUNDS*NUM_ITERS; ++i) {
+ while (!go[MASTER])
+ cpu_relax();
+ go[MASTER] = 0;
+ go[SLAVE] = ia64_get_itc();
+ }
+ }
+ local_irq_restore(flags);
+}
+
+/*
+ * Return the number of cycles by which our itc differs from the itc on the
master
+ * (time-keeper) CPU. A positive number indicates our itc is ahead of the
master,
+ * negative that it is behind.
+ */
+static inline long
+get_delta (long *rt, long *master)
+{
+ unsigned long best_t0 = 0, best_t1 = ~0UL, best_tm = 0;
+ unsigned long tcenter, t0, t1, tm;
+ long i;
+
+ for (i = 0; i < NUM_ITERS; ++i) {
+ t0 = ia64_get_itc();
+ go[MASTER] = 1;
+ while (!(tm = go[SLAVE]))
+ cpu_relax();
+ go[SLAVE] = 0;
+ t1 = ia64_get_itc();
+
+ if (t1 - t0 < best_t1 - best_t0)
+ best_t0 = t0, best_t1 = t1, best_tm = tm;
+ }
+
+ *rt = best_t1 - best_t0;
+ *master = best_tm - best_t0;
+
+ /* average best_t0 and best_t1 without overflow: */
+ tcenter = (best_t0/2 + best_t1/2);
+ if (best_t0 % 2 + best_t1 % 2 == 2)
+ ++tcenter;
+ return tcenter - best_tm;
+}
+
+/*
+ * Synchronize ar.itc of the current (slave) CPU with the ar.itc of the MASTER
CPU
+ * (normally the time-keeper CPU). We use a closed loop to eliminate the
possibility of
+ * unaccounted-for errors (such as getting a machine check in the middle of a
calibration
+ * step). The basic idea is for the slave to ask the master what itc value it
has and to
+ * read its own itc before and after the master responds. Each iteration
gives us three
+ * timestamps:
+ *
+ * slave master
+ *
+ * t0 ---\
+ * ---\
+ * --->
+ * tm
+ * /---
+ * /---
+ * t1 <---
+ *
+ *
+ * The goal is to adjust the slave's ar.itc such that tm falls exactly
half-way between t0
+ * and t1. If we achieve this, the clocks are synchronized provided the
interconnect
+ * between the slave and the master is symmetric. Even if the interconnect
were
+ * asymmetric, we would still know that the synchronization error is smaller
than the
+ * roundtrip latency (t0 - t1).
+ *
+ * When the interconnect is quiet and symmetric, this lets us synchronize the
itc to
+ * within one or two cycles. However, we can only *guarantee* that the
synchronization is
+ * accurate to within a round-trip time, which is typically in the range of
several
+ * hundred cycles (e.g., ~500 cycles). In practice, this means that the itc's
are usually
+ * almost perfectly synchronized, but we shouldn't assume that the accuracy is
much better
+ * than half a micro second or so.
+ */
+void
+ia64_sync_itc (unsigned int master)
+{
+ long i, delta, adj, adjust_latency = 0, done = 0;
+ unsigned long flags, rt, master_time_stamp, bound;
+#if DEBUG_ITC_SYNC
+ struct {
+ long rt; /* roundtrip time */
+ long master; /* master's timestamp */
+ long diff; /* difference between midpoint and master's
timestamp */
+ long lat; /* estimate of itc adjustment latency */
+ } t[NUM_ROUNDS];
+#endif
+
+ /*
+ * Make sure local timer ticks are disabled while we sync. If
+ * they were enabled, we'd have to worry about nasty issues
+ * like setting the ITC ahead of (or a long time before) the
+ * next scheduled tick.
+ */
+ BUG_ON((ia64_get_itv() & (1 << 16)) == 0);
+
+ go[MASTER] = 1;
+
+ if (smp_call_function_single(master, sync_master, NULL, 1, 0) < 0) {
+ printk(KERN_ERR "sync_itc: failed to get attention of CPU
%u!\n", master);
+ return;
+ }
+
+ while (go[MASTER])
+ cpu_relax(); /* wait for master to be ready */
+
+ spin_lock_irqsave(&itc_sync_lock, flags);
+ {
+ for (i = 0; i < NUM_ROUNDS; ++i) {
+ delta = get_delta(&rt, &master_time_stamp);
+ if (delta == 0) {
+ done = 1; /* let's lock on to this... */
+ bound = rt;
+ }
+
+ if (!done) {
+ if (i > 0) {
+ adjust_latency += -delta;
+ adj = -delta + adjust_latency/4;
+ } else
+ adj = -delta;
+
+ ia64_set_itc(ia64_get_itc() + adj);
+ }
+#if DEBUG_ITC_SYNC
+ t[i].rt = rt;
+ t[i].master = master_time_stamp;
+ t[i].diff = delta;
+ t[i].lat = adjust_latency/4;
+#endif
+ }
+ }
+ spin_unlock_irqrestore(&itc_sync_lock, flags);
+
+#if DEBUG_ITC_SYNC
+ for (i = 0; i < NUM_ROUNDS; ++i)
+ printk("rt=%5ld master=%5ld diff=%5ld adjlat=%5ld\n",
+ t[i].rt, t[i].master, t[i].diff, t[i].lat);
+#endif
+
+ printk(KERN_INFO "CPU %d: synchronized ITC with CPU %u (last diff %ld
cycles, "
+ "maxerr %lu cycles)\n", smp_processor_id(), master, delta, rt);
+}
+
+/*
+ * Ideally sets up per-cpu profiling hooks. Doesn't do much now...
+ */
+static inline void __devinit
+smp_setup_percpu_timer (void)
+{
+}
+
+static void __devinit
+smp_callin (void)
+{
+ int cpuid, phys_id;
+ extern void ia64_init_itm(void);
+
+#ifdef CONFIG_PERFMON
+ extern void pfm_init_percpu(void);
+#endif
+
+ cpuid = smp_processor_id();
+ phys_id = hard_smp_processor_id();
+
+ if (cpu_online(cpuid)) {
+ printk(KERN_ERR "huh, phys CPU#0x%x, CPU#0x%x already
present??\n",
+ phys_id, cpuid);
+ BUG();
+ }
+
+ lock_ipi_calllock();
+ cpu_set(cpuid, cpu_online_map);
+ unlock_ipi_calllock();
+ per_cpu(cpu_state, cpuid) = CPU_ONLINE;
+
+ smp_setup_percpu_timer();
+
+#ifndef XEN
+ ia64_mca_cmc_vector_setup(); /* Setup vector on AP */
+#endif
+
+#ifdef CONFIG_PERFMON
+ pfm_init_percpu();
+#endif
+
+ local_irq_enable();
+
+ if (!(sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)) {
+ /*
+ * Synchronize the ITC with the BP. Need to do this after irqs
are
+ * enabled because ia64_sync_itc() calls
smp_call_function_single(), which
+ * calls spin_unlock_bh(), which calls spin_unlock_bh(), which
calls
+ * local_bh_enable(), which bugs out if irqs are not enabled...
+ */
+ Dprintk("Going to syncup ITC with BP.\n");
+ ia64_sync_itc(0);
+ }
+
+ /*
+ * Get our bogomips.
+ */
+ ia64_init_itm();
+#ifndef XEN
+ calibrate_delay();
+#endif
+ local_cpu_data->loops_per_jiffy = loops_per_jiffy;
+
+#ifdef CONFIG_IA32_SUPPORT
+ ia32_gdt_init();
+#endif
+
+ /*
+ * Allow the master to continue.
+ */
+ cpu_set(cpuid, cpu_callin_map);
+ Dprintk("Stack on CPU %d at about %p\n",cpuid, &cpuid);
+}
+
+
+/*
+ * Activate a secondary processor. head.S calls this.
+ */
+int __devinit
+start_secondary (void *unused)
+{
+ /* Early console may use I/O ports */
+ ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase));
+ Dprintk("start_secondary: starting CPU 0x%x\n",
hard_smp_processor_id());
+ efi_map_pal_code();
+ cpu_init();
+ smp_callin();
+
+#ifdef XEN
+ startup_cpu_idle_loop();
+#else
+ cpu_idle();
+#endif
+ return 0;
+}
+
+struct pt_regs * __devinit idle_regs(struct pt_regs *regs)
+{
+ return NULL;
+}
+
+#ifndef XEN
+struct create_idle {
+ struct task_struct *idle;
+ struct completion done;
+ int cpu;
+};
+
+void
+do_fork_idle(void *_c_idle)
+{
+ struct create_idle *c_idle = _c_idle;
+
+ c_idle->idle = fork_idle(c_idle->cpu);
+ complete(&c_idle->done);
+}
+#endif
+
+static int __devinit
+do_boot_cpu (int sapicid, int cpu)
+{
+ int timeout;
+#ifndef XEN
+ struct create_idle c_idle = {
+ .cpu = cpu,
+ .done = COMPLETION_INITIALIZER(c_idle.done),
+ };
+ DECLARE_WORK(work, do_fork_idle, &c_idle);
+
+ c_idle.idle = get_idle_for_cpu(cpu);
+ if (c_idle.idle) {
+ init_idle(c_idle.idle, cpu);
+ goto do_rest;
+ }
+
+ /*
+ * We can't use kernel_thread since we must avoid to reschedule the
child.
+ */
+ if (!keventd_up() || current_is_keventd())
+ work.func(work.data);
+ else {
+ schedule_work(&work);
+ wait_for_completion(&c_idle.done);
+ }
+
+ if (IS_ERR(c_idle.idle))
+ panic("failed fork for CPU %d", cpu);
+
+ set_idle_for_cpu(cpu, c_idle.idle);
+
+do_rest:
+ task_for_booting_cpu = c_idle.idle;
+#endif
+
+ Dprintk("Sending wakeup vector %lu to AP 0x%x/0x%x.\n",
ap_wakeup_vector, cpu, sapicid);
+
+ set_brendez_area(cpu);
+ platform_send_ipi(cpu, ap_wakeup_vector, IA64_IPI_DM_INT, 0);
+
+ /*
+ * Wait 10s total for the AP to start
+ */
+ Dprintk("Waiting on callin_map ...");
+ for (timeout = 0; timeout < 100000; timeout++) {
+ if (cpu_isset(cpu, cpu_callin_map))
+ break; /* It has booted */
+ udelay(100);
+ }
+ Dprintk("\n");
+
+ if (!cpu_isset(cpu, cpu_callin_map)) {
+ printk(KERN_ERR "Processor 0x%x/0x%x is stuck.\n", cpu,
sapicid);
+ ia64_cpu_to_sapicid[cpu] = -1;
+ cpu_clear(cpu, cpu_online_map); /* was set in smp_callin() */
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int __init
+decay (char *str)
+{
+ int ticks;
+ get_option (&str, &ticks);
+ return 1;
+}
+
+__setup("decay=", decay);
+
+/*
+ * Initialize the logical CPU number to SAPICID mapping
+ */
+void __init
+smp_build_cpu_map (void)
+{
+ int sapicid, cpu, i;
+ int boot_cpu_id = hard_smp_processor_id();
+
+ for (cpu = 0; cpu < NR_CPUS; cpu++) {
+ ia64_cpu_to_sapicid[cpu] = -1;
+#ifdef CONFIG_HOTPLUG_CPU
+ cpu_set(cpu, cpu_possible_map);
+#endif
+ }
+
+ ia64_cpu_to_sapicid[0] = boot_cpu_id;
+ cpus_clear(cpu_present_map);
+ cpu_set(0, cpu_present_map);
+ cpu_set(0, cpu_possible_map);
+ for (cpu = 1, i = 0; i < smp_boot_data.cpu_count; i++) {
+ sapicid = smp_boot_data.cpu_phys_id[i];
+ if (sapicid == boot_cpu_id)
+ continue;
+ cpu_set(cpu, cpu_present_map);
+ cpu_set(cpu, cpu_possible_map);
+ ia64_cpu_to_sapicid[cpu] = sapicid;
+ cpu++;
+ }
+}
+
+/*
+ * Cycle through the APs sending Wakeup IPIs to boot each.
+ */
+void __init
+smp_prepare_cpus (unsigned int max_cpus)
+{
+ int boot_cpu_id = hard_smp_processor_id();
+
+ /*
+ * Initialize the per-CPU profiling counter/multiplier
+ */
+
+ smp_setup_percpu_timer();
+
+ /*
+ * We have the boot CPU online for sure.
+ */
+ cpu_set(0, cpu_online_map);
+ cpu_set(0, cpu_callin_map);
+
+ local_cpu_data->loops_per_jiffy = loops_per_jiffy;
+ ia64_cpu_to_sapicid[0] = boot_cpu_id;
+
+ printk(KERN_INFO "Boot processor id 0x%x/0x%x\n", 0, boot_cpu_id);
+
+ current_thread_info()->cpu = 0;
+
+ /*
+ * If SMP should be disabled, then really disable it!
+ */
+ if (!max_cpus) {
+ printk(KERN_INFO "SMP mode deactivated.\n");
+ cpus_clear(cpu_online_map);
+ cpus_clear(cpu_present_map);
+ cpus_clear(cpu_possible_map);
+ cpu_set(0, cpu_online_map);
+ cpu_set(0, cpu_present_map);
+ cpu_set(0, cpu_possible_map);
+ return;
+ }
+}
+
+void __devinit smp_prepare_boot_cpu(void)
+{
+ cpu_set(smp_processor_id(), cpu_online_map);
+ cpu_set(smp_processor_id(), cpu_callin_map);
+ per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
+}
+
+/*
+ * mt_info[] is a temporary store for all info returned by
+ * PAL_LOGICAL_TO_PHYSICAL, to be copied into cpuinfo_ia64 when the
+ * specific cpu comes.
+ */
+static struct {
+ __u32 socket_id;
+ __u16 core_id;
+ __u16 thread_id;
+ __u16 proc_fixed_addr;
+ __u8 valid;
+} mt_info[NR_CPUS] __devinitdata;
+
+#ifdef CONFIG_HOTPLUG_CPU
+static inline void
+remove_from_mtinfo(int cpu)
+{
+ int i;
+
+ for_each_cpu(i)
+ if (mt_info[i].valid && mt_info[i].socket_id ==
+ cpu_data(cpu)->socket_id)
+ mt_info[i].valid = 0;
+}
+
+static inline void
+clear_cpu_sibling_map(int cpu)
+{
+ int i;
+
+ for_each_cpu_mask(i, cpu_sibling_map[cpu])
+ cpu_clear(cpu, cpu_sibling_map[i]);
+ for_each_cpu_mask(i, cpu_core_map[cpu])
+ cpu_clear(cpu, cpu_core_map[i]);
+
+ cpu_sibling_map[cpu] = cpu_core_map[cpu] = CPU_MASK_NONE;
+}
+
+static void
+remove_siblinginfo(int cpu)
+{
+ int last = 0;
+
+ if (cpu_data(cpu)->threads_per_core == 1 &&
+ cpu_data(cpu)->cores_per_socket == 1) {
+ cpu_clear(cpu, cpu_core_map[cpu]);
+ cpu_clear(cpu, cpu_sibling_map[cpu]);
+ return;
+ }
+
+ last = (cpus_weight(cpu_core_map[cpu]) == 1 ? 1 : 0);
+
+ /* remove it from all sibling map's */
+ clear_cpu_sibling_map(cpu);
+
+ /* if this cpu is the last in the core group, remove all its info
+ * from mt_info structure
+ */
+ if (last)
+ remove_from_mtinfo(cpu);
+}
+
+extern void fixup_irqs(void);
+/* must be called with cpucontrol mutex held */
+int __cpu_disable(void)
+{
+ int cpu = smp_processor_id();
+
+ /*
+ * dont permit boot processor for now
+ */
+ if (cpu == 0)
+ return -EBUSY;
+
+ remove_siblinginfo(cpu);
+ cpu_clear(cpu, cpu_online_map);
+ fixup_irqs();
+ local_flush_tlb_all();
+ cpu_clear(cpu, cpu_callin_map);
+ return 0;
+}
+
+void __cpu_die(unsigned int cpu)
+{
+ unsigned int i;
+
+ for (i = 0; i < 100; i++) {
+ /* They ack this in play_dead by setting CPU_DEAD */
+ if (per_cpu(cpu_state, cpu) == CPU_DEAD)
+ {
+ printk ("CPU %d is now offline\n", cpu);
+ return;
+ }
+ msleep(100);
+ }
+ printk(KERN_ERR "CPU %u didn't die...\n", cpu);
+}
+#else /* !CONFIG_HOTPLUG_CPU */
+int __cpu_disable(void)
+{
+ return -ENOSYS;
+}
+
+void __cpu_die(unsigned int cpu)
+{
+ /* We said "no" in __cpu_disable */
+ BUG();
+}
+#endif /* CONFIG_HOTPLUG_CPU */
+
+void
+smp_cpus_done (unsigned int dummy)
+{
+ int cpu;
+ unsigned long bogosum = 0;
+
+ /*
+ * Allow the user to impress friends.
+ */
+
+ for (cpu = 0; cpu < NR_CPUS; cpu++)
+ if (cpu_online(cpu))
+ bogosum += cpu_data(cpu)->loops_per_jiffy;
+
+ printk(KERN_INFO "Total of %d processors activated (%lu.%02lu
BogoMIPS).\n",
+ (int)num_online_cpus(), bogosum/(500000/HZ),
(bogosum/(5000/HZ))%100);
+}
+
+static inline void __devinit
+set_cpu_sibling_map(int cpu)
+{
+ int i;
+
+ for_each_online_cpu(i) {
+ if ((cpu_data(cpu)->socket_id == cpu_data(i)->socket_id)) {
+ cpu_set(i, cpu_core_map[cpu]);
+ cpu_set(cpu, cpu_core_map[i]);
+ if (cpu_data(cpu)->core_id == cpu_data(i)->core_id) {
+ cpu_set(i, cpu_sibling_map[cpu]);
+ cpu_set(cpu, cpu_sibling_map[i]);
+ }
+ }
+ }
+}
+
+int __devinit
+__cpu_up (unsigned int cpu)
+{
+ int ret;
+ int sapicid;
+
+ sapicid = ia64_cpu_to_sapicid[cpu];
+ if (sapicid == -1)
+ return -EINVAL;
+
+ /*
+ * Already booted cpu? not valid anymore since we dont
+ * do idle loop tightspin anymore.
+ */
+ if (cpu_isset(cpu, cpu_callin_map))
+ return -EINVAL;
+
+ per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
+ /* Processor goes to start_secondary(), sets online flag */
+ ret = do_boot_cpu(sapicid, cpu);
+ if (ret < 0)
+ return ret;
+
+ if (cpu_data(cpu)->threads_per_core == 1 &&
+ cpu_data(cpu)->cores_per_socket == 1) {
+ cpu_set(cpu, cpu_sibling_map[cpu]);
+ cpu_set(cpu, cpu_core_map[cpu]);
+ return 0;
+ }
+
+ set_cpu_sibling_map(cpu);
+
+ return 0;
+}
+
+/*
+ * Assume that CPU's have been discovered by some platform-dependent
interface. For
+ * SoftSDV/Lion, that would be ACPI.
+ *
+ * Setup of the IPI irq handler is done in irq.c:init_IRQ_SMP().
+ */
+void __init
+init_smp_config(void)
+{
+ struct fptr {
+ unsigned long fp;
+ unsigned long gp;
+ } *ap_startup;
+ long sal_ret;
+
+ /* Tell SAL where to drop the AP's. */
+ ap_startup = (struct fptr *) start_ap;
+ sal_ret = ia64_sal_set_vectors(SAL_VECTOR_OS_BOOT_RENDEZ,
+ ia64_tpa(ap_startup->fp),
ia64_tpa(ap_startup->gp), 0, 0, 0, 0);
+ if (sal_ret < 0)
+ printk(KERN_ERR "SMP: Can't set SAL AP Boot Rendezvous: %s\n",
+ ia64_sal_strerror(sal_ret));
+}
+
+static inline int __devinit
+check_for_mtinfo_index(void)
+{
+ int i;
+
+ for_each_cpu(i)
+ if (!mt_info[i].valid)
+ return i;
+
+ return -1;
+}
+
+/*
+ * Search the mt_info to find out if this socket's cid/tid information is
+ * cached or not. If the socket exists, fill in the core_id and thread_id
+ * in cpuinfo
+ */
+static int __devinit
+check_for_new_socket(__u16 logical_address, struct cpuinfo_ia64 *c)
+{
+ int i;
+ __u32 sid = c->socket_id;
+
+ for_each_cpu(i) {
+ if (mt_info[i].valid && mt_info[i].proc_fixed_addr ==
logical_address
+ && mt_info[i].socket_id == sid) {
+ c->core_id = mt_info[i].core_id;
+ c->thread_id = mt_info[i].thread_id;
+ return 1; /* not a new socket */
+ }
+ }
+ return 0;
+}
+
+/*
+ * identify_siblings(cpu) gets called from identify_cpu. This populates the
+ * information related to logical execution units in per_cpu_data structure.
+ */
+void __devinit
+identify_siblings(struct cpuinfo_ia64 *c)
+{
+ s64 status;
+ u16 pltid;
+ u64 proc_fixed_addr;
+ int count, i;
+ pal_logical_to_physical_t info;
+
+ if (smp_num_cpucores == 1 && smp_num_siblings == 1)
+ return;
+
+ if ((status = ia64_pal_logical_to_phys(0, &info)) !=
PAL_STATUS_SUCCESS) {
+ printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n",
+ status);
+ return;
+ }
+ if ((status = ia64_sal_physical_id_info(&pltid)) != PAL_STATUS_SUCCESS)
{
+ printk(KERN_ERR "ia64_sal_pltid failed with %ld\n", status);
+ return;
+ }
+ if ((status = ia64_pal_fixed_addr(&proc_fixed_addr)) !=
PAL_STATUS_SUCCESS) {
+ printk(KERN_ERR "ia64_pal_fixed_addr failed with %ld\n",
status);
+ return;
+ }
+
+ c->socket_id = (pltid << 8) | info.overview_ppid;
+ c->cores_per_socket = info.overview_cpp;
+ c->threads_per_core = info.overview_tpc;
+ count = c->num_log = info.overview_num_log;
+
+ /* If the thread and core id information is already cached, then
+ * we will simply update cpu_info and return. Otherwise, we will
+ * do the PAL calls and cache core and thread id's of all the siblings.
+ */
+ if (check_for_new_socket(proc_fixed_addr, c))
+ return;
+
+ for (i = 0; i < count; i++) {
+ int index;
+
+ if (i && (status = ia64_pal_logical_to_phys(i, &info))
+ != PAL_STATUS_SUCCESS) {
+ printk(KERN_ERR "ia64_pal_logical_to_phys failed"
+ " with %ld\n", status);
+ return;
+ }
+ if (info.log2_la == proc_fixed_addr) {
+ c->core_id = info.log1_cid;
+ c->thread_id = info.log1_tid;
+ }
+
+ index = check_for_mtinfo_index();
+ /* We will not do the mt_info caching optimization in this case.
+ */
+ if (index < 0)
+ continue;
+
+ mt_info[index].valid = 1;
+ mt_info[index].socket_id = c->socket_id;
+ mt_info[index].core_id = info.log1_cid;
+ mt_info[index].thread_id = info.log1_tid;
+ mt_info[index].proc_fixed_addr = info.log2_la;
+ }
+}
+#endif /* CONFIG_SMP ifdef XEN */
diff -r 2b95125015a5 -r f5c4042212b0
xen/include/asm-ia64/linux-xen/asm/spinlock.h
--- /dev/null Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/linux-xen/asm/spinlock.h Tue Aug 30 18:41:54 2005
@@ -0,0 +1,241 @@
+#ifndef _ASM_IA64_SPINLOCK_H
+#define _ASM_IA64_SPINLOCK_H
+
+/*
+ * Copyright (C) 1998-2003 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@xxxxxxxxxx>
+ * Copyright (C) 1999 Walt Drummond <drummond@xxxxxxxxxxx>
+ *
+ * This file is used for SMP configurations only.
+ */
+
+#include <linux/compiler.h>
+#include <linux/kernel.h>
+
+#include <asm/atomic.h>
+#include <asm/bitops.h>
+#include <asm/intrinsics.h>
+#include <asm/system.h>
+
+typedef struct {
+ volatile unsigned int lock;
+#ifdef CONFIG_PREEMPT
+ unsigned int break_lock;
+#endif
+#ifdef XEN
+ unsigned char recurse_cpu;
+ unsigned char recurse_cnt;
+#endif
+} spinlock_t;
+
+#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 }
+#define spin_lock_init(x) ((x)->lock = 0)
+
+#ifdef ASM_SUPPORTED
+/*
+ * Try to get the lock. If we fail to get the lock, make a non-standard call
to
+ * ia64_spinlock_contention(). We do not use a normal call because that would
force all
+ * callers of spin_lock() to be non-leaf routines. Instead,
ia64_spinlock_contention() is
+ * carefully coded to touch only those registers that spin_lock() marks
"clobbered".
+ */
+
+#define IA64_SPINLOCK_CLOBBERS "ar.ccv", "ar.pfs", "p14", "p15", "r27", "r28",
"r29", "r30", "b6", "memory"
+
+static inline void
+_raw_spin_lock_flags (spinlock_t *lock, unsigned long flags)
+{
+ register volatile unsigned int *ptr asm ("r31") = &lock->lock;
+
+#if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
+# ifdef CONFIG_ITANIUM
+ /* don't use brl on Itanium... */
+ asm volatile ("{\n\t"
+ " mov ar.ccv = r0\n\t"
+ " mov r28 = ip\n\t"
+ " mov r30 = 1;;\n\t"
+ "}\n\t"
+ "cmpxchg4.acq r30 = [%1], r30, ar.ccv\n\t"
+ "movl r29 = ia64_spinlock_contention_pre3_4;;\n\t"
+ "cmp4.ne p14, p0 = r30, r0\n\t"
+ "mov b6 = r29;;\n\t"
+ "mov r27=%2\n\t"
+ "(p14) br.cond.spnt.many b6"
+ : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
+# else
+ asm volatile ("{\n\t"
+ " mov ar.ccv = r0\n\t"
+ " mov r28 = ip\n\t"
+ " mov r30 = 1;;\n\t"
+ "}\n\t"
+ "cmpxchg4.acq r30 = [%1], r30, ar.ccv;;\n\t"
+ "cmp4.ne p14, p0 = r30, r0\n\t"
+ "mov r27=%2\n\t"
+ "(p14) brl.cond.spnt.many
ia64_spinlock_contention_pre3_4;;"
+ : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
+# endif /* CONFIG_MCKINLEY */
+#else
+# ifdef CONFIG_ITANIUM
+ /* don't use brl on Itanium... */
+ /* mis-declare, so we get the entry-point, not it's function
descriptor: */
+ asm volatile ("mov r30 = 1\n\t"
+ "mov r27=%2\n\t"
+ "mov ar.ccv = r0;;\n\t"
+ "cmpxchg4.acq r30 = [%0], r30, ar.ccv\n\t"
+ "movl r29 = ia64_spinlock_contention;;\n\t"
+ "cmp4.ne p14, p0 = r30, r0\n\t"
+ "mov b6 = r29;;\n\t"
+ "(p14) br.call.spnt.many b6 = b6"
+ : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
+# else
+ asm volatile ("mov r30 = 1\n\t"
+ "mov r27=%2\n\t"
+ "mov ar.ccv = r0;;\n\t"
+ "cmpxchg4.acq r30 = [%0], r30, ar.ccv;;\n\t"
+ "cmp4.ne p14, p0 = r30, r0\n\t"
+ "(p14) brl.call.spnt.many b6=ia64_spinlock_contention;;"
+ : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
+# endif /* CONFIG_MCKINLEY */
+#endif
+}
+#define _raw_spin_lock(lock) _raw_spin_lock_flags(lock, 0)
+#else /* !ASM_SUPPORTED */
+#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
+# define _raw_spin_lock(x)
\
+do {
\
+ __u32 *ia64_spinlock_ptr = (__u32 *) (x);
\
+ __u64 ia64_spinlock_val;
\
+ ia64_spinlock_val = ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0);
\
+ if (unlikely(ia64_spinlock_val)) {
\
+ do {
\
+ while (*ia64_spinlock_ptr)
\
+ ia64_barrier();
\
+ ia64_spinlock_val =
ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0); \
+ } while (ia64_spinlock_val);
\
+ }
\
+} while (0)
+#endif /* !ASM_SUPPORTED */
+
+#define spin_is_locked(x) ((x)->lock != 0)
+#define _raw_spin_unlock(x) do { barrier(); ((spinlock_t *) x)->lock = 0; }
while (0)
+#define _raw_spin_trylock(x) (cmpxchg_acq(&(x)->lock, 0, 1) == 0)
+#define spin_unlock_wait(x) do { barrier(); } while ((x)->lock)
+
+#ifdef XEN
+/*
+ * spin_[un]lock_recursive(): Use these forms when the lock can (safely!) be
+ * reentered recursively on the same CPU. All critical regions that may form
+ * part of a recursively-nested set must be protected by these forms. If there
+ * are any critical regions that cannot form part of such a set, they can use
+ * standard spin_[un]lock().
+ */
+#define _raw_spin_lock_recursive(_lock) \
+ do { \
+ int cpu = smp_processor_id(); \
+ if ( likely((_lock)->recurse_cpu != cpu) ) \
+ { \
+ spin_lock(_lock); \
+ (_lock)->recurse_cpu = cpu; \
+ } \
+ (_lock)->recurse_cnt++; \
+ } while ( 0 )
+
+#define _raw_spin_unlock_recursive(_lock) \
+ do { \
+ if ( likely(--(_lock)->recurse_cnt == 0) ) \
+ { \
+ (_lock)->recurse_cpu = -1; \
+ spin_unlock(_lock); \
+ } \
+ } while ( 0 )
+#endif
+
+typedef struct {
+ volatile unsigned int read_counter : 31;
+ volatile unsigned int write_lock : 1;
+#ifdef CONFIG_PREEMPT
+ unsigned int break_lock;
+#endif
+} rwlock_t;
+#define RW_LOCK_UNLOCKED (rwlock_t) { 0, 0 }
+
+#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0)
+#define read_can_lock(rw) (*(volatile int *)(rw) >= 0)
+#define write_can_lock(rw) (*(volatile int *)(rw) == 0)
+
+#define _raw_read_lock(rw)
\
+do {
\
+ rwlock_t *__read_lock_ptr = (rw);
\
+
\
+ while (unlikely(ia64_fetchadd(1, (int *) __read_lock_ptr, acq) < 0)) {
\
+ ia64_fetchadd(-1, (int *) __read_lock_ptr, rel);
\
+ while (*(volatile int *)__read_lock_ptr < 0)
\
+ cpu_relax();
\
+ }
\
+} while (0)
+
+#define _raw_read_unlock(rw) \
+do { \
+ rwlock_t *__read_lock_ptr = (rw); \
+ ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \
+} while (0)
+
+#ifdef ASM_SUPPORTED
+#define _raw_write_lock(rw)
\
+do {
\
+ __asm__ __volatile__ (
\
+ "mov ar.ccv = r0\n"
\
+ "dep r29 = -1, r0, 31, 1;;\n"
\
+ "1:\n"
\
+ "ld4 r2 = [%0];;\n"
\
+ "cmp4.eq p0,p7 = r0,r2\n"
\
+ "(p7) br.cond.spnt.few 1b \n"
\
+ "cmpxchg4.acq r2 = [%0], r29, ar.ccv;;\n"
\
+ "cmp4.eq p0,p7 = r0, r2\n"
\
+ "(p7) br.cond.spnt.few 1b;;\n"
\
+ :: "r"(rw) : "ar.ccv", "p7", "r2", "r29", "memory");
\
+} while(0)
+
+#define _raw_write_trylock(rw)
\
+({
\
+ register long result;
\
+
\
+ __asm__ __volatile__ (
\
+ "mov ar.ccv = r0\n"
\
+ "dep r29 = -1, r0, 31, 1;;\n"
\
+ "cmpxchg4.acq %0 = [%1], r29, ar.ccv\n"
\
+ : "=r"(result) : "r"(rw) : "ar.ccv", "r29", "memory");
\
+ (result == 0);
\
+})
+
+#else /* !ASM_SUPPORTED */
+
+#define _raw_write_lock(l)
\
+({
\
+ __u64 ia64_val, ia64_set_val = ia64_dep_mi(-1, 0, 31, 1);
\
+ __u32 *ia64_write_lock_ptr = (__u32 *) (l);
\
+ do {
\
+ while (*ia64_write_lock_ptr)
\
+ ia64_barrier();
\
+ ia64_val = ia64_cmpxchg4_acq(ia64_write_lock_ptr, ia64_set_val,
0); \
+ } while (ia64_val);
\
+})
+
+#define _raw_write_trylock(rw) \
+({ \
+ __u64 ia64_val; \
+ __u64 ia64_set_val = ia64_dep_mi(-1, 0, 31,1); \
+ ia64_val = ia64_cmpxchg4_acq((__u32 *)(rw), ia64_set_val, 0); \
+ (ia64_val == 0); \
+})
+
+#endif /* !ASM_SUPPORTED */
+
+#define _raw_read_trylock(lock) generic_raw_read_trylock(lock)
+
+#define _raw_write_unlock(x)
\
+({
\
+ smp_mb__before_clear_bit(); /* need barrier before releasing
lock... */ \
+ clear_bit(31, (x));
\
+})
+
+#endif /* _ASM_IA64_SPINLOCK_H */
diff -r 2b95125015a5 -r f5c4042212b0
xen/include/asm-ia64/linux-xen/asm/tlbflush.h
--- /dev/null Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/linux-xen/asm/tlbflush.h Tue Aug 30 18:41:54 2005
@@ -0,0 +1,105 @@
+#ifndef _ASM_IA64_TLBFLUSH_H
+#define _ASM_IA64_TLBFLUSH_H
+
+/*
+ * Copyright (C) 2002 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@xxxxxxxxxx>
+ */
+
+#include <linux/config.h>
+
+#include <linux/mm.h>
+
+#include <asm/intrinsics.h>
+#include <asm/mmu_context.h>
+#include <asm/page.h>
+
+/*
+ * Now for some TLB flushing routines. This is the kind of stuff that
+ * can be very expensive, so try to avoid them whenever possible.
+ */
+
+/*
+ * Flush everything (kernel mapping may also have changed due to
+ * vmalloc/vfree).
+ */
+extern void local_flush_tlb_all (void);
+
+#ifdef CONFIG_SMP
+ extern void smp_flush_tlb_all (void);
+ extern void smp_flush_tlb_mm (struct mm_struct *mm);
+# define flush_tlb_all() smp_flush_tlb_all()
+#else
+# define flush_tlb_all() local_flush_tlb_all()
+#endif
+
+static inline void
+local_finish_flush_tlb_mm (struct mm_struct *mm)
+{
+#ifndef XEN
+ if (mm == current->active_mm)
+ activate_context(mm);
+#endif
+}
+
+/*
+ * Flush a specified user mapping. This is called, e.g., as a result of
fork() and
+ * exit(). fork() ends up here because the copy-on-write mechanism needs to
write-protect
+ * the PTEs of the parent task.
+ */
+static inline void
+flush_tlb_mm (struct mm_struct *mm)
+{
+ if (!mm)
+ return;
+
+#ifndef XEN
+ mm->context = 0;
+#endif
+
+ if (atomic_read(&mm->mm_users) == 0)
+ return; /* happens as a result of exit_mmap() */
+
+#ifdef CONFIG_SMP
+ smp_flush_tlb_mm(mm);
+#else
+ local_finish_flush_tlb_mm(mm);
+#endif
+}
+
+extern void flush_tlb_range (struct vm_area_struct *vma, unsigned long start,
unsigned long end);
+
+/*
+ * Page-granular tlb flush.
+ */
+static inline void
+flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
+{
+#ifdef CONFIG_SMP
+ flush_tlb_range(vma, (addr & PAGE_MASK), (addr & PAGE_MASK) +
PAGE_SIZE);
+#else
+ if (vma->vm_mm == current->active_mm)
+ ia64_ptcl(addr, (PAGE_SHIFT << 2));
+#ifndef XEN
+ else
+ vma->vm_mm->context = 0;
+#endif
+#endif
+}
+
+/*
+ * Flush the TLB entries mapping the virtually mapped linear page
+ * table corresponding to address range [START-END).
+ */
+static inline void
+flush_tlb_pgtables (struct mm_struct *mm, unsigned long start, unsigned long
end)
+{
+ /*
+ * Deprecated. The virtual page table is now flushed via the normal
gather/flush
+ * interface (see tlb.h).
+ */
+}
+
+#define flush_tlb_kernel_range(start, end) flush_tlb_all() /* XXX fix me */
+
+#endif /* _ASM_IA64_TLBFLUSH_H */
diff -r 2b95125015a5 -r f5c4042212b0 xen/include/asm-ia64/linux/notifier.h
--- /dev/null Fri Aug 26 13:06:49 2005
+++ b/xen/include/asm-ia64/linux/notifier.h Tue Aug 30 18:41:54 2005
@@ -0,0 +1,76 @@
+/*
+ * Routines to manage notifier chains for passing status changes to any
+ * interested routines. We need this instead of hard coded call lists so
+ * that modules can poke their nose into the innards. The network devices
+ * needed them so here they are for the rest of you.
+ *
+ * Alan Cox <Alan.Cox@xxxxxxxxx>
+ */
+
+#ifndef _LINUX_NOTIFIER_H
+#define _LINUX_NOTIFIER_H
+#include <linux/errno.h>
+
+struct notifier_block
+{
+ int (*notifier_call)(struct notifier_block *self, unsigned long, void
*);
+ struct notifier_block *next;
+ int priority;
+};
+
+
+#ifdef __KERNEL__
+
+extern int notifier_chain_register(struct notifier_block **list, struct
notifier_block *n);
+extern int notifier_chain_unregister(struct notifier_block **nl, struct
notifier_block *n);
+extern int notifier_call_chain(struct notifier_block **n, unsigned long val,
void *v);
+
+#define NOTIFY_DONE 0x0000 /* Don't care */
+#define NOTIFY_OK 0x0001 /* Suits me */
+#define NOTIFY_STOP_MASK 0x8000 /* Don't call further */
+#define NOTIFY_BAD (NOTIFY_STOP_MASK|0x0002) /* Bad/Veto
action */
+/*
+ * Clean way to return from the notifier and stop further calls.
+ */
+#define NOTIFY_STOP (NOTIFY_OK|NOTIFY_STOP_MASK)
+
+/*
+ * Declared notifiers so far. I can imagine quite a few more chains
+ * over time (eg laptop power reset chains, reboot chain (to clean
+ * device units up), device [un]mount chain, module load/unload chain,
+ * low memory chain, screenblank chain (for plug in modular
screenblankers)
+ * VC switch chains (for loadable kernel svgalib VC switch helpers) etc...
+ */
+
+/* netdevice notifier chain */
+#define NETDEV_UP 0x0001 /* For now you can't veto a device up/down */
+#define NETDEV_DOWN 0x0002
+#define NETDEV_REBOOT 0x0003 /* Tell a protocol stack a network interface
+ detected a hardware crash and restarted
+ - we can use this eg to kick tcp sessions
+ once done */
+#define NETDEV_CHANGE 0x0004 /* Notify device state change */
+#define NETDEV_REGISTER 0x0005
+#define NETDEV_UNREGISTER 0x0006
+#define NETDEV_CHANGEMTU 0x0007
+#define NETDEV_CHANGEADDR 0x0008
+#define NETDEV_GOING_DOWN 0x0009
+#define NETDEV_CHANGENAME 0x000A
+#define NETDEV_FEAT_CHANGE 0x000B
+
+#define SYS_DOWN 0x0001 /* Notify of system down */
+#define SYS_RESTART SYS_DOWN
+#define SYS_HALT 0x0002 /* Notify of system halt */
+#define SYS_POWER_OFF 0x0003 /* Notify of system power off */
+
+#define NETLINK_URELEASE 0x0001 /* Unicast netlink socket released */
+
+#define CPU_ONLINE 0x0002 /* CPU (unsigned)v is up */
+#define CPU_UP_PREPARE 0x0003 /* CPU (unsigned)v coming up */
+#define CPU_UP_CANCELED 0x0004 /* CPU (unsigned)v NOT coming up
*/
+#define CPU_DOWN_PREPARE 0x0005 /* CPU (unsigned)v going down */
+#define CPU_DOWN_FAILED 0x0006 /* CPU (unsigned)v NOT going
down */
+#define CPU_DEAD 0x0007 /* CPU (unsigned)v dead */
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_NOTIFIER_H */
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/linux/sal.c
--- a/xen/arch/ia64/linux/sal.c Fri Aug 26 13:06:49 2005
+++ /dev/null Tue Aug 30 18:41:54 2005
@@ -1,302 +0,0 @@
-/*
- * System Abstraction Layer (SAL) interface routines.
- *
- * Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@xxxxxxxxxx>
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999 Walt Drummond <drummond@xxxxxxxxxxx>
- */
-#include <linux/config.h>
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/string.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);
- }
-}
-
-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 combersome 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;
- extern char saved_command_line[];
-
- for (cp = saved_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
-
-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);
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/smp.c
--- a/xen/arch/ia64/smp.c Fri Aug 26 13:06:49 2005
+++ /dev/null Tue Aug 30 18:41:54 2005
@@ -1,43 +0,0 @@
-/*
- * Intel SMP support routines.
- *
- * (c) 1995 Alan Cox, Building #3 <alan@xxxxxxxxxx>
- * (c) 1998-99, 2000 Ingo Molnar <mingo@xxxxxxxxxx>
- *
- * This code is released under the GNU General Public License version 2 or
- * later.
- */
-
-//#include <xen/irq.h>
-#include <xen/sched.h>
-#include <xen/delay.h>
-#include <xen/spinlock.h>
-#include <asm/smp.h>
-//#include <asm/mc146818rtc.h>
-#include <asm/pgalloc.h>
-//#include <asm/smpboot.h>
-#include <asm/hardirq.h>
-
-
-//Huh? This seems to be used on ia64 even if !CONFIG_SMP
-void flush_tlb_mask(cpumask_t mask)
-{
- dummy();
-}
-//#if CONFIG_SMP || IA64
-#if CONFIG_SMP
-//Huh? This seems to be used on ia64 even if !CONFIG_SMP
-void smp_send_event_check_mask(cpumask_t mask)
-{
- dummy();
- //send_IPI_mask(cpu_mask, EVENT_CHECK_VECTOR);
-}
-
-
-//Huh? This seems to be used on ia64 even if !CONFIG_SMP
-int try_flush_tlb_mask(cpumask_t mask)
-{
- dummy();
- return 1;
-}
-#endif
diff -r 2b95125015a5 -r f5c4042212b0 xen/arch/ia64/smpboot.c
--- a/xen/arch/ia64/smpboot.c Fri Aug 26 13:06:49 2005
+++ /dev/null Tue Aug 30 18:41:54 2005
@@ -1,2 +0,0 @@
-// expand later
-int ht_per_core = 1;
diff -r 2b95125015a5 -r f5c4042212b0 xen/include/asm-ia64/linux/asm/spinlock.h
--- a/xen/include/asm-ia64/linux/asm/spinlock.h Fri Aug 26 13:06:49 2005
+++ /dev/null Tue Aug 30 18:41:54 2005
@@ -1,208 +0,0 @@
-#ifndef _ASM_IA64_SPINLOCK_H
-#define _ASM_IA64_SPINLOCK_H
-
-/*
- * Copyright (C) 1998-2003 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@xxxxxxxxxx>
- * Copyright (C) 1999 Walt Drummond <drummond@xxxxxxxxxxx>
- *
- * This file is used for SMP configurations only.
- */
-
-#include <linux/compiler.h>
-#include <linux/kernel.h>
-
-#include <asm/atomic.h>
-#include <asm/bitops.h>
-#include <asm/intrinsics.h>
-#include <asm/system.h>
-
-typedef struct {
- volatile unsigned int lock;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} spinlock_t;
-
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 }
-#define spin_lock_init(x) ((x)->lock = 0)
-
-#ifdef ASM_SUPPORTED
-/*
- * Try to get the lock. If we fail to get the lock, make a non-standard call
to
- * ia64_spinlock_contention(). We do not use a normal call because that would
force all
- * callers of spin_lock() to be non-leaf routines. Instead,
ia64_spinlock_contention() is
- * carefully coded to touch only those registers that spin_lock() marks
"clobbered".
- */
-
-#define IA64_SPINLOCK_CLOBBERS "ar.ccv", "ar.pfs", "p14", "p15", "r27", "r28",
"r29", "r30", "b6", "memory"
-
-static inline void
-_raw_spin_lock_flags (spinlock_t *lock, unsigned long flags)
-{
- register volatile unsigned int *ptr asm ("r31") = &lock->lock;
-
-#if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
-# ifdef CONFIG_ITANIUM
- /* don't use brl on Itanium... */
- asm volatile ("{\n\t"
- " mov ar.ccv = r0\n\t"
- " mov r28 = ip\n\t"
- " mov r30 = 1;;\n\t"
- "}\n\t"
- "cmpxchg4.acq r30 = [%1], r30, ar.ccv\n\t"
- "movl r29 = ia64_spinlock_contention_pre3_4;;\n\t"
- "cmp4.ne p14, p0 = r30, r0\n\t"
- "mov b6 = r29;;\n\t"
- "mov r27=%2\n\t"
- "(p14) br.cond.spnt.many b6"
- : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
-# else
- asm volatile ("{\n\t"
- " mov ar.ccv = r0\n\t"
- " mov r28 = ip\n\t"
- " mov r30 = 1;;\n\t"
- "}\n\t"
- "cmpxchg4.acq r30 = [%1], r30, ar.ccv;;\n\t"
- "cmp4.ne p14, p0 = r30, r0\n\t"
- "mov r27=%2\n\t"
- "(p14) brl.cond.spnt.many
ia64_spinlock_contention_pre3_4;;"
- : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
-# endif /* CONFIG_MCKINLEY */
-#else
-# ifdef CONFIG_ITANIUM
- /* don't use brl on Itanium... */
- /* mis-declare, so we get the entry-point, not it's function
descriptor: */
- asm volatile ("mov r30 = 1\n\t"
- "mov r27=%2\n\t"
- "mov ar.ccv = r0;;\n\t"
- "cmpxchg4.acq r30 = [%0], r30, ar.ccv\n\t"
- "movl r29 = ia64_spinlock_contention;;\n\t"
- "cmp4.ne p14, p0 = r30, r0\n\t"
- "mov b6 = r29;;\n\t"
- "(p14) br.call.spnt.many b6 = b6"
- : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
-# else
- asm volatile ("mov r30 = 1\n\t"
- "mov r27=%2\n\t"
- "mov ar.ccv = r0;;\n\t"
- "cmpxchg4.acq r30 = [%0], r30, ar.ccv;;\n\t"
- "cmp4.ne p14, p0 = r30, r0\n\t"
- "(p14) brl.call.spnt.many b6=ia64_spinlock_contention;;"
- : "=r"(ptr) : "r"(ptr), "r" (flags) :
IA64_SPINLOCK_CLOBBERS);
-# endif /* CONFIG_MCKINLEY */
-#endif
-}
-#define _raw_spin_lock(lock) _raw_spin_lock_flags(lock, 0)
-#else /* !ASM_SUPPORTED */
-#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
-# define _raw_spin_lock(x)
\
-do {
\
- __u32 *ia64_spinlock_ptr = (__u32 *) (x);
\
- __u64 ia64_spinlock_val;
\
- ia64_spinlock_val = ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0);
\
- if (unlikely(ia64_spinlock_val)) {
\
- do {
\
- while (*ia64_spinlock_ptr)
\
- ia64_barrier();
\
- ia64_spinlock_val =
ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0); \
- } while (ia64_spinlock_val);
\
- }
\
-} while (0)
-#endif /* !ASM_SUPPORTED */
-
-#define spin_is_locked(x) ((x)->lock != 0)
-#define _raw_spin_unlock(x) do { barrier(); ((spinlock_t *) x)->lock = 0; }
while (0)
-#define _raw_spin_trylock(x) (cmpxchg_acq(&(x)->lock, 0, 1) == 0)
-#define spin_unlock_wait(x) do { barrier(); } while ((x)->lock)
-
-typedef struct {
- volatile unsigned int read_counter : 31;
- volatile unsigned int write_lock : 1;
-#ifdef CONFIG_PREEMPT
- unsigned int break_lock;
-#endif
-} rwlock_t;
-#define RW_LOCK_UNLOCKED (rwlock_t) { 0, 0 }
-
-#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0)
-#define read_can_lock(rw) (*(volatile int *)(rw) >= 0)
-#define write_can_lock(rw) (*(volatile int *)(rw) == 0)
-
-#define _raw_read_lock(rw)
\
-do {
\
- rwlock_t *__read_lock_ptr = (rw);
\
-
\
- while (unlikely(ia64_fetchadd(1, (int *) __read_lock_ptr, acq) < 0)) {
\
- ia64_fetchadd(-1, (int *) __read_lock_ptr, rel);
\
- while (*(volatile int *)__read_lock_ptr < 0)
\
- cpu_relax();
\
- }
\
-} while (0)
-
-#define _raw_read_unlock(rw) \
-do { \
- rwlock_t *__read_lock_ptr = (rw); \
- ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \
-} while (0)
-
-#ifdef ASM_SUPPORTED
-#define _raw_write_lock(rw)
\
-do {
\
- __asm__ __volatile__ (
\
- "mov ar.ccv = r0\n"
\
- "dep r29 = -1, r0, 31, 1;;\n"
\
- "1:\n"
\
- "ld4 r2 = [%0];;\n"
\
- "cmp4.eq p0,p7 = r0,r2\n"
\
- "(p7) br.cond.spnt.few 1b \n"
\
- "cmpxchg4.acq r2 = [%0], r29, ar.ccv;;\n"
\
- "cmp4.eq p0,p7 = r0, r2\n"
\
- "(p7) br.cond.spnt.few 1b;;\n"
\
- :: "r"(rw) : "ar.ccv", "p7", "r2", "r29", "memory");
\
-} while(0)
-
-#define _raw_write_trylock(rw)
\
-({
\
- register long result;
\
-
\
- __asm__ __volatile__ (
\
- "mov ar.ccv = r0\n"
\
- "dep r29 = -1, r0, 31, 1;;\n"
\
- "cmpxchg4.acq %0 = [%1], r29, ar.ccv\n"
\
- : "=r"(result) : "r"(rw) : "ar.ccv", "r29", "memory");
\
- (result == 0);
\
-})
-
-#else /* !ASM_SUPPORTED */
-
-#define _raw_write_lock(l)
\
-({
\
- __u64 ia64_val, ia64_set_val = ia64_dep_mi(-1, 0, 31, 1);
\
- __u32 *ia64_write_lock_ptr = (__u32 *) (l);
\
- do {
\
- while (*ia64_write_lock_ptr)
\
- ia64_barrier();
\
- ia64_val = ia64_cmpxchg4_acq(ia64_write_lock_ptr, ia64_set_val,
0); \
- } while (ia64_val);
\
-})
-
-#define _raw_write_trylock(rw) \
-({ \
- __u64 ia64_val; \
- __u64 ia64_set_val = ia64_dep_mi(-1, 0, 31,1); \
- ia64_val = ia64_cmpxchg4_acq((__u32 *)(rw), ia64_set_val, 0); \
- (ia64_val == 0); \
-})
-
-#endif /* !ASM_SUPPORTED */
-
-#define _raw_read_trylock(lock) generic_raw_read_trylock(lock)
-
-#define _raw_write_unlock(x)
\
-({
\
- smp_mb__before_clear_bit(); /* need barrier before releasing
lock... */ \
- clear_bit(31, (x));
\
-})
-
-#endif /* _ASM_IA64_SPINLOCK_H */
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