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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [IA64] more cleanup
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID f662f98d594b65e1698c5da241312f1ae136b975
# Parent 279628dc2d6fda9a0fd790cce3e04a2ff1570c0d
[IA64] more cleanup
Clean-up: fw_emul.c created.
More definitions moved to mm.c
process.c is lighter and renamed to faults.c
Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>
---
xen/arch/ia64/xen/process.c | 949 ------------------------------------------
xen/arch/ia64/xen/Makefile | 3
xen/arch/ia64/xen/dom_fw.c | 330 --------------
xen/arch/ia64/xen/domain.c | 114 ++++-
xen/arch/ia64/xen/faults.c | 662 +++++++++++++++++++++++++++++
xen/arch/ia64/xen/fw_emul.c | 453 ++++++++++++++++++++
xen/arch/ia64/xen/hypercall.c | 52 ++
xen/arch/ia64/xen/mm.c | 337 ++++++++++++++
xen/arch/ia64/xen/xenmisc.c | 351 ---------------
xen/include/asm-ia64/domain.h | 3
10 files changed, 1609 insertions(+), 1645 deletions(-)
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/Makefile
--- a/xen/arch/ia64/xen/Makefile Mon Jun 05 14:23:57 2006 -0600
+++ b/xen/arch/ia64/xen/Makefile Mon Jun 05 14:28:39 2006 -0600
@@ -3,6 +3,7 @@ obj-y += domain.o
obj-y += domain.o
obj-y += dom_fw.o
obj-y += efi_emul.o
+obj-y += fw_emul.o
obj-y += hpsimserial.o
obj-y += hypercall.o
obj-y += hyperprivop.o
@@ -13,7 +14,7 @@ obj-y += mm_init.o
obj-y += mm_init.o
obj-y += pcdp.o
obj-y += privop.o
-obj-y += process.o
+obj-y += faults.o
obj-y += regionreg.o
obj-y += sn_console.o
obj-y += vcpu.o
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/dom_fw.c
--- a/xen/arch/ia64/xen/dom_fw.c Mon Jun 05 14:23:57 2006 -0600
+++ b/xen/arch/ia64/xen/dom_fw.c Mon Jun 05 14:28:39 2006 -0600
@@ -23,7 +23,6 @@
#include <xen/acpi.h>
#include <asm/dom_fw.h>
-#include <public/sched.h>
static struct ia64_boot_param *dom_fw_init(struct domain *, const char
*,int,char *,int);
extern unsigned long domain_mpa_to_imva(struct domain *,unsigned long mpaddr);
@@ -139,334 +138,6 @@ unsigned long dom_fw_setup(struct domain
/* the following heavily leveraged from linux/arch/ia64/hp/sim/fw-emu.c */
-struct sal_ret_values
-sal_emulator (long index, unsigned long in1, unsigned long in2,
- unsigned long in3, unsigned long in4, unsigned long in5,
- unsigned long in6, unsigned long in7)
-{
- unsigned long r9 = 0;
- unsigned long r10 = 0;
- long r11 = 0;
- long status;
-
- status = 0;
- switch (index) {
- case SAL_FREQ_BASE:
- if (!running_on_sim)
- status = ia64_sal_freq_base(in1,&r9,&r10);
- else switch (in1) {
- case SAL_FREQ_BASE_PLATFORM:
- r9 = 200000000;
- break;
-
- case SAL_FREQ_BASE_INTERVAL_TIMER:
- r9 = 700000000;
- break;
-
- case SAL_FREQ_BASE_REALTIME_CLOCK:
- r9 = 1;
- break;
-
- default:
- status = -1;
- break;
- }
- break;
- case SAL_PCI_CONFIG_READ:
- if (current->domain == dom0) {
- u64 value;
- // note that args 2&3 are swapped!!
- status = ia64_sal_pci_config_read(in1,in3,in2,&value);
- r9 = value;
- }
- else
- printf("NON-PRIV DOMAIN CALLED SAL_PCI_CONFIG_READ\n");
- break;
- case SAL_PCI_CONFIG_WRITE:
- if (current->domain == dom0) {
- if (((in1 & ~0xffffffffUL) && (in4 == 0)) ||
- (in4 > 1) ||
- (in2 > 8) || (in2 & (in2-1)))
- printf("***
SAL_PCI_CONF_WRITE?!?(adr=0x%lx,typ=0x%lx,sz=0x%lx,val=0x%lx)\n",
- in1,in4,in2,in3);
- // note that args are in a different order!!
- status = ia64_sal_pci_config_write(in1,in4,in2,in3);
- }
- else
- printf("NON-PRIV DOMAIN CALLED SAL_PCI_CONFIG_WRITE\n");
- break;
- case SAL_SET_VECTORS:
- if (in1 == SAL_VECTOR_OS_BOOT_RENDEZ) {
- if (in4 != 0 || in5 != 0 || in6 != 0 || in7 != 0) {
- /* Sanity check: cs_length1 must be 0,
- second vector is reserved. */
- status = -2;
- }
- else {
- struct domain *d = current->domain;
- d->arch.boot_rdv_ip = in2;
- d->arch.boot_rdv_r1 = in3;
- }
- }
- else
- printf("*** CALLED SAL_SET_VECTORS %lu. IGNORED...\n",
- in1);
- break;
- case SAL_GET_STATE_INFO:
- /* No more info. */
- status = -5;
- r9 = 0;
- break;
- case SAL_GET_STATE_INFO_SIZE:
- /* Return a dummy size. */
- status = 0;
- r9 = 128;
- break;
- case SAL_CLEAR_STATE_INFO:
- /* Noop. */
- break;
- case SAL_MC_RENDEZ:
- printf("*** CALLED SAL_MC_RENDEZ. IGNORED...\n");
- break;
- case SAL_MC_SET_PARAMS:
- printf("*** CALLED SAL_MC_SET_PARAMS. IGNORED...\n");
- break;
- case SAL_CACHE_FLUSH:
- if (1) {
- /* Flush using SAL.
- This method is faster but has a side effect on
- other vcpu running on this cpu. */
- status = ia64_sal_cache_flush (in1);
- }
- else {
- /* Flush with fc all the domain.
- This method is slower but has no side effects. */
- domain_cache_flush (current->domain, in1 == 4 ? 1 : 0);
- status = 0;
- }
- break;
- case SAL_CACHE_INIT:
- printf("*** CALLED SAL_CACHE_INIT. IGNORED...\n");
- break;
- case SAL_UPDATE_PAL:
- printf("*** CALLED SAL_UPDATE_PAL. IGNORED...\n");
- break;
- default:
- printf("*** CALLED SAL_ WITH UNKNOWN INDEX. IGNORED...\n");
- status = -1;
- break;
- }
- return ((struct sal_ret_values) {status, r9, r10, r11});
-}
-
-struct ia64_pal_retval
-xen_pal_emulator(unsigned long index, u64 in1, u64 in2, u64 in3)
-{
- unsigned long r9 = 0;
- unsigned long r10 = 0;
- unsigned long r11 = 0;
- long status = PAL_STATUS_UNIMPLEMENTED;
-
- if (running_on_sim)
- return pal_emulator_static(index);
-
- // pal code must be mapped by a TR when pal is called, however
- // calls are rare enough that we will map it lazily rather than
- // at every context switch
- //efi_map_pal_code();
- switch (index) {
- case PAL_MEM_ATTRIB:
- status = ia64_pal_mem_attrib(&r9);
- break;
- case PAL_FREQ_BASE:
- status = ia64_pal_freq_base(&r9);
- break;
- case PAL_PROC_GET_FEATURES:
- status = ia64_pal_proc_get_features(&r9,&r10,&r11);
- break;
- case PAL_BUS_GET_FEATURES:
- status = ia64_pal_bus_get_features(
- (pal_bus_features_u_t *) &r9,
- (pal_bus_features_u_t *) &r10,
- (pal_bus_features_u_t *) &r11);
- break;
- case PAL_FREQ_RATIOS:
- status = ia64_pal_freq_ratios(
- (struct pal_freq_ratio *) &r9,
- (struct pal_freq_ratio *) &r10,
- (struct pal_freq_ratio *) &r11);
- break;
- case PAL_PTCE_INFO:
- {
- // return hard-coded xen-specific values because ptc.e
- // is emulated on xen to always flush everything
- // these values result in only one ptc.e instruction
- status = 0; r9 = 0; r10 = (1L << 32) | 1L; r11 = 0;
- }
- break;
- case PAL_VERSION:
- status = ia64_pal_version(
- (pal_version_u_t *) &r9,
- (pal_version_u_t *) &r10);
- break;
- case PAL_VM_PAGE_SIZE:
- status = ia64_pal_vm_page_size(&r9,&r10);
- break;
- case PAL_DEBUG_INFO:
- status = ia64_pal_debug_info(&r9,&r10);
- break;
- case PAL_CACHE_SUMMARY:
- status = ia64_pal_cache_summary(&r9,&r10);
- break;
- case PAL_VM_SUMMARY:
- {
- /* Use xen-specific values.
- hash_tag_id is somewhat random! */
- const pal_vm_info_1_u_t v1 =
- {.pal_vm_info_1_s =
- { .vw = 1,
- .phys_add_size = 44,
- .key_size = 16,
- .max_pkr = 15,
- .hash_tag_id = 0x30,
- .max_dtr_entry = NDTRS - 1,
- .max_itr_entry = NITRS - 1,
-#ifdef VHPT_GLOBAL
- .max_unique_tcs = 3,
- .num_tc_levels = 2
-#else
- .max_unique_tcs = 2,
- .num_tc_levels = 1
-#endif
- }};
- const pal_vm_info_2_u_t v2 =
- { .pal_vm_info_2_s =
- { .impl_va_msb = 50,
- .rid_size = current->domain->arch.rid_bits,
- .reserved = 0 }};
- r9 = v1.pvi1_val;
- r10 = v2.pvi2_val;
- status = PAL_STATUS_SUCCESS;
- }
- break;
- case PAL_VM_INFO:
-#ifdef VHPT_GLOBAL
- if (in1 == 0 && in2 == 2) {
- /* Level 1: VHPT */
- const pal_tc_info_u_t v =
- { .pal_tc_info_s = {.num_sets = 128,
- .associativity = 1,
- .num_entries = 128,
- .pf = 1,
- .unified = 1,
- .reduce_tr = 0,
- .reserved = 0}};
- r9 = v.pti_val;
- /* Only support PAGE_SIZE tc. */
- r10 = PAGE_SIZE;
- status = PAL_STATUS_SUCCESS;
- }
-#endif
- else if (
-#ifdef VHPT_GLOBAL
- in1 == 1 /* Level 2. */
-#else
- in1 == 0 /* Level 1. */
-#endif
- && (in2 == 1 || in2 == 2))
- {
- /* itlb/dtlb, 1 entry. */
- const pal_tc_info_u_t v =
- { .pal_tc_info_s = {.num_sets = 1,
- .associativity = 1,
- .num_entries = 1,
- .pf = 1,
- .unified = 0,
- .reduce_tr = 0,
- .reserved = 0}};
- r9 = v.pti_val;
- /* Only support PAGE_SIZE tc. */
- r10 = PAGE_SIZE;
- status = PAL_STATUS_SUCCESS;
- }
- else
- status = PAL_STATUS_EINVAL;
- break;
- case PAL_RSE_INFO:
- status = ia64_pal_rse_info(
- &r9,
- (pal_hints_u_t *) &r10);
- break;
- case PAL_REGISTER_INFO:
- status = ia64_pal_register_info(in1, &r9, &r10);
- break;
- case PAL_CACHE_FLUSH:
- /* FIXME */
- printk("PAL_CACHE_FLUSH NOT IMPLEMENTED!\n");
- BUG();
- break;
- case PAL_PERF_MON_INFO:
- {
- unsigned long pm_buffer[16];
- status = ia64_pal_perf_mon_info(
- pm_buffer,
- (pal_perf_mon_info_u_t *) &r9);
- if (status != 0) {
- while(1)
- printk("PAL_PERF_MON_INFO fails ret=%ld\n",
status);
- break;
- }
- if (copy_to_user((void __user *)in1,pm_buffer,128)) {
- while(1)
- printk("xen_pal_emulator: PAL_PERF_MON_INFO "
- "can't copy to user!!!!\n");
- status = PAL_STATUS_UNIMPLEMENTED;
- break;
- }
- }
- break;
- case PAL_CACHE_INFO:
- {
- pal_cache_config_info_t ci;
- status = ia64_pal_cache_config_info(in1,in2,&ci);
- if (status != 0) break;
- r9 = ci.pcci_info_1.pcci1_data;
- r10 = ci.pcci_info_2.pcci2_data;
- }
- break;
- case PAL_VM_TR_READ: /* FIXME: vcpu_get_tr?? */
- printk("PAL_VM_TR_READ NOT IMPLEMENTED, IGNORED!\n");
- break;
- case PAL_HALT_INFO:
- {
- /* 1000 cycles to enter/leave low power state,
- consumes 10 mW, implemented and cache/TLB coherent. */
- unsigned long res = 1000UL | (1000UL << 16) | (10UL << 32)
- | (1UL << 61) | (1UL << 60);
- if (copy_to_user ((void *)in1, &res, sizeof (res)))
- status = PAL_STATUS_EINVAL;
- else
- status = PAL_STATUS_SUCCESS;
- }
- break;
- case PAL_HALT:
- if (current->domain == dom0) {
- printf ("Domain0 halts the machine\n");
- (*efi.reset_system)(EFI_RESET_SHUTDOWN,0,0,NULL);
- }
- else
- domain_shutdown (current->domain,
- SHUTDOWN_poweroff);
- break;
- default:
- printk("xen_pal_emulator: UNIMPLEMENTED PAL CALL %lu!!!!\n",
- index);
- break;
- }
- return ((struct ia64_pal_retval) {status, r9, r10, r11});
-}
-
-
#define NFUNCPTRS 20
static void print_md(efi_memory_desc_t *md)
@@ -478,7 +149,6 @@ static void print_md(efi_memory_desc_t *
md->num_pages >> (20 - EFI_PAGE_SHIFT));
#endif
}
-
static u32 lsapic_nbr;
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/domain.c
--- a/xen/arch/ia64/xen/domain.c Mon Jun 05 14:23:57 2006 -0600
+++ b/xen/arch/ia64/xen/domain.c Mon Jun 05 14:28:39 2006 -0600
@@ -78,21 +78,96 @@ extern char dom0_command_line[];
#define IS_XEN_ADDRESS(d,a) ((a >= d->xen_vastart) && (a <= d->xen_vaend))
/* FIXME: where these declarations should be there ? */
-extern long platform_is_hp_ski(void);
extern void serial_input_init(void);
static void init_switch_stack(struct vcpu *v);
+extern void vmx_do_launch(struct vcpu *);
void build_physmap_table(struct domain *d);
/* this belongs in include/asm, but there doesn't seem to be a suitable place
*/
-void arch_domain_destroy(struct domain *d)
-{
- BUG_ON(d->arch.mm.pgd != NULL);
- if (d->shared_info != NULL)
- free_xenheap_page(d->shared_info);
-
- domain_flush_destroy (d);
-
- deallocate_rid_range(d);
+unsigned long context_switch_count = 0;
+
+extern struct vcpu *ia64_switch_to (struct vcpu *next_task);
+
+#include <xen/sched-if.h>
+
+void schedule_tail(struct vcpu *prev)
+{
+ extern char ia64_ivt;
+ context_saved(prev);
+
+ if (VMX_DOMAIN(current)) {
+ vmx_do_launch(current);
+ } else {
+ ia64_set_iva(&ia64_ivt);
+ ia64_set_pta(VHPT_ADDR | (1 << 8) | (VHPT_SIZE_LOG2 << 2) |
+ VHPT_ENABLED);
+ load_region_regs(current);
+ vcpu_load_kernel_regs(current);
+ }
+}
+
+void context_switch(struct vcpu *prev, struct vcpu *next)
+{
+ uint64_t spsr;
+ uint64_t pta;
+
+ local_irq_save(spsr);
+ context_switch_count++;
+
+ __ia64_save_fpu(prev->arch._thread.fph);
+ __ia64_load_fpu(next->arch._thread.fph);
+ if (VMX_DOMAIN(prev))
+ vmx_save_state(prev);
+ if (VMX_DOMAIN(next))
+ vmx_load_state(next);
+ /*ia64_psr(ia64_task_regs(next))->dfh = !ia64_is_local_fpu_owner(next);*/
+ prev = ia64_switch_to(next);
+
+ //cpu_set(smp_processor_id(), current->domain->domain_dirty_cpumask);
+
+ if (!VMX_DOMAIN(current)){
+ vcpu_set_next_timer(current);
+ }
+
+
+// leave this debug for now: it acts as a heartbeat when more than
+// one domain is active
+{
+static long cnt[16] = { 50,50,50,50,50,50,50,50,50,50,50,50,50,50,50,50};
+static int i = 100;
+int id = ((struct vcpu *)current)->domain->domain_id & 0xf;
+if (!cnt[id]--) { cnt[id] = 500000; printk("%x",id); }
+if (!i--) { i = 1000000; printk("+"); }
+}
+
+ if (VMX_DOMAIN(current)){
+ vmx_load_all_rr(current);
+ }else{
+ extern char ia64_ivt;
+ ia64_set_iva(&ia64_ivt);
+ if (!is_idle_domain(current->domain)) {
+ ia64_set_pta(VHPT_ADDR | (1 << 8) | (VHPT_SIZE_LOG2 << 2) |
+ VHPT_ENABLED);
+ load_region_regs(current);
+ vcpu_load_kernel_regs(current);
+ if (vcpu_timer_expired(current))
+ vcpu_pend_timer(current);
+ }else {
+ /* When switching to idle domain, only need to disable vhpt
+ * walker. Then all accesses happen within idle context will
+ * be handled by TR mapping and identity mapping.
+ */
+ pta = ia64_get_pta();
+ ia64_set_pta(pta & ~VHPT_ENABLED);
+ }
+ }
+ local_irq_restore(spsr);
+ context_saved(prev);
+}
+
+void continue_running(struct vcpu *same)
+{
+ /* nothing to do */
}
static void default_idle(void)
@@ -257,6 +332,17 @@ fail_nomem:
if (d->shared_info != NULL)
free_xenheap_page(d->shared_info);
return -ENOMEM;
+}
+
+void arch_domain_destroy(struct domain *d)
+{
+ BUG_ON(d->arch.mm.pgd != NULL);
+ if (d->shared_info != NULL)
+ free_xenheap_page(d->shared_info);
+
+ domain_flush_destroy (d);
+
+ deallocate_rid_range(d);
}
void arch_getdomaininfo_ctxt(struct vcpu *v, struct vcpu_guest_context *c)
@@ -543,7 +629,7 @@ static void loaddomainelfimage(struct do
void alloc_dom0(void)
{
- if (platform_is_hp_ski()) {
+ if (running_on_sim) {
dom0_size = 128*1024*1024; //FIXME: Should be configurable
}
#ifdef CONFIG_DOMAIN0_CONTIGUOUS
@@ -798,21 +884,21 @@ int construct_dom0(struct domain *d,
void machine_restart(char * __unused)
{
- if (platform_is_hp_ski()) dummy();
+ if (running_on_sim) dummy();
printf("machine_restart called: spinning....\n");
while(1);
}
void machine_halt(void)
{
- if (platform_is_hp_ski()) dummy();
+ if (running_on_sim) dummy();
printf("machine_halt called: spinning....\n");
while(1);
}
void dummy_called(char *function)
{
- if (platform_is_hp_ski()) asm("break 0;;");
+ if (running_on_sim) asm("break 0;;");
printf("dummy called in %s: spinning....\n", function);
while(1);
}
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/hypercall.c
--- a/xen/arch/ia64/xen/hypercall.c Mon Jun 05 14:23:57 2006 -0600
+++ b/xen/arch/ia64/xen/hypercall.c Mon Jun 05 14:28:39 2006 -0600
@@ -334,6 +334,58 @@ ia64_hypercall (struct pt_regs *regs)
return xen_hypercall (regs);
}
+unsigned long hypercall_create_continuation(
+ unsigned int op, const char *format, ...)
+{
+ struct mc_state *mcs = &mc_state[smp_processor_id()];
+ struct vcpu *v = current;
+ const char *p = format;
+ unsigned long arg;
+ unsigned int i;
+ va_list args;
+
+ va_start(args, format);
+ if ( test_bit(_MCSF_in_multicall, &mcs->flags) ) {
+ panic("PREEMPT happen in multicall\n"); // Not support yet
+ } else {
+ vcpu_set_gr(v, 2, op, 0);
+ for ( i = 0; *p != '\0'; i++) {
+ switch ( *p++ )
+ {
+ case 'i':
+ arg = (unsigned long)va_arg(args, unsigned int);
+ break;
+ case 'l':
+ arg = (unsigned long)va_arg(args, unsigned long);
+ break;
+ case 'h':
+ arg = (unsigned long)va_arg(args, void *);
+ break;
+ default:
+ arg = 0;
+ BUG();
+ }
+ switch (i) {
+ case 0: vcpu_set_gr(v, 14, arg, 0);
+ break;
+ case 1: vcpu_set_gr(v, 15, arg, 0);
+ break;
+ case 2: vcpu_set_gr(v, 16, arg, 0);
+ break;
+ case 3: vcpu_set_gr(v, 17, arg, 0);
+ break;
+ case 4: vcpu_set_gr(v, 18, arg, 0);
+ break;
+ default: panic("Too many args for hypercall continuation\n");
+ break;
+ }
+ }
+ }
+ v->arch.hypercall_continuation = 1;
+ va_end(args);
+ return op;
+}
+
/* Need make this function common */
extern int
iosapic_guest_read(
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/mm.c
--- a/xen/arch/ia64/xen/mm.c Mon Jun 05 14:23:57 2006 -0600
+++ b/xen/arch/ia64/xen/mm.c Mon Jun 05 14:28:39 2006 -0600
@@ -14,6 +14,7 @@
#include <asm/mm.h>
#include <asm/pgalloc.h>
#include <asm/vhpt.h>
+#include <asm/vcpu.h>
#include <linux/efi.h>
#ifndef CONFIG_XEN_IA64_DOM0_VP
@@ -246,6 +247,110 @@ share_xen_page_with_privileged_guests(st
share_xen_page_with_privileged_guests(struct page_info *page, int readonly)
{
share_xen_page_with_guest(page, dom_xen, readonly);
+}
+
+unsigned long
+gmfn_to_mfn_foreign(struct domain *d, unsigned long gpfn)
+{
+ unsigned long pte;
+
+#ifndef CONFIG_XEN_IA64_DOM0_VP
+ if (d == dom0)
+ return(gpfn);
+#endif
+ pte = lookup_domain_mpa(d,gpfn << PAGE_SHIFT);
+ if (!pte) {
+ panic("gmfn_to_mfn_foreign: bad gpfn. spinning...\n");
+ }
+ return ((pte & _PFN_MASK) >> PAGE_SHIFT);
+}
+
+// given a domain virtual address, pte and pagesize, extract the metaphysical
+// address, convert the pte for a physical address for (possibly different)
+// Xen PAGE_SIZE and return modified pte. (NOTE: TLB insert should use
+// PAGE_SIZE!)
+u64 translate_domain_pte(u64 pteval, u64 address, u64 itir__, u64* logps)
+{
+ struct domain *d = current->domain;
+ ia64_itir_t itir = {.itir = itir__};
+ u64 mask, mpaddr, pteval2;
+ u64 arflags;
+ u64 arflags2;
+
+ pteval &= ((1UL << 53) - 1);// ignore [63:53] bits
+
+ // FIXME address had better be pre-validated on insert
+ mask = ~itir_mask(itir.itir);
+ mpaddr = (((pteval & ~_PAGE_ED) & _PAGE_PPN_MASK) & ~mask) |
+ (address & mask);
+#ifdef CONFIG_XEN_IA64_DOM0_VP
+ if (itir.ps > PAGE_SHIFT) {
+ itir.ps = PAGE_SHIFT;
+ }
+#endif
+ *logps = itir.ps;
+#ifndef CONFIG_XEN_IA64_DOM0_VP
+ if (d == dom0) {
+ if (mpaddr < dom0_start || mpaddr >= dom0_start + dom0_size) {
+ /*
+ printk("translate_domain_pte: out-of-bounds dom0 mpaddr
0x%lx! itc=%lx...\n",
+ mpaddr, ia64_get_itc());
+ */
+ tdpfoo();
+ }
+ }
+ else if ((mpaddr >> PAGE_SHIFT) > d->max_pages) {
+ /* Address beyond the limit. However the grant table is
+ also beyond the limit. Display a message if not in the
+ grant table. */
+ if (mpaddr >= IA64_GRANT_TABLE_PADDR
+ && mpaddr < (IA64_GRANT_TABLE_PADDR
+ + (ORDER_GRANT_FRAMES << PAGE_SHIFT)))
+ printf("translate_domain_pte: bad mpa=0x%lx (> 0x%lx),"
+ "vadr=0x%lx,pteval=0x%lx,itir=0x%lx\n",
+ mpaddr, (unsigned long)d->max_pages<<PAGE_SHIFT,
+ address, pteval, itir.itir);
+ tdpfoo();
+ }
+#endif
+ pteval2 = lookup_domain_mpa(d,mpaddr);
+ arflags = pteval & _PAGE_AR_MASK;
+ arflags2 = pteval2 & _PAGE_AR_MASK;
+ if (arflags != _PAGE_AR_R && arflags2 == _PAGE_AR_R) {
+#if 0
+ DPRINTK("%s:%d "
+ "pteval 0x%lx arflag 0x%lx address 0x%lx itir 0x%lx "
+ "pteval2 0x%lx arflags2 0x%lx mpaddr 0x%lx\n",
+ __func__, __LINE__,
+ pteval, arflags, address, itir__,
+ pteval2, arflags2, mpaddr);
+#endif
+ pteval = (pteval & ~_PAGE_AR_MASK) | _PAGE_AR_R;
+}
+
+ pteval2 &= _PAGE_PPN_MASK; // ignore non-addr bits
+ pteval2 |= (pteval & _PAGE_ED);
+ pteval2 |= _PAGE_PL_2; // force PL0->2 (PL3 is unaffected)
+ pteval2 = (pteval & ~_PAGE_PPN_MASK) | pteval2;
+ return pteval2;
+}
+
+// given a current domain metaphysical address, return the physical address
+unsigned long translate_domain_mpaddr(unsigned long mpaddr)
+{
+ unsigned long pteval;
+
+#ifndef CONFIG_XEN_IA64_DOM0_VP
+ if (current->domain == dom0) {
+ if (mpaddr < dom0_start || mpaddr >= dom0_start + dom0_size) {
+ printk("translate_domain_mpaddr: out-of-bounds dom0
mpaddr 0x%lx! continuing...\n",
+ mpaddr);
+ tdpfoo();
+ }
+ }
+#endif
+ pteval = lookup_domain_mpa(current->domain,mpaddr);
+ return ((pteval & _PAGE_PPN_MASK) | (mpaddr & ~PAGE_MASK));
}
//XXX !xxx_present() should be used instread of !xxx_none()?
@@ -1036,6 +1141,238 @@ void domain_cache_flush (struct domain *
//printf ("domain_cache_flush: %d %d pages\n", d->domain_id, nbr_page);
}
+#ifdef VERBOSE
+#define MEM_LOG(_f, _a...) \
+ printk("DOM%u: (file=mm.c, line=%d) " _f "\n", \
+ current->domain->domain_id , __LINE__ , ## _a )
+#else
+#define MEM_LOG(_f, _a...) ((void)0)
+#endif
+
+static void free_page_type(struct page_info *page, u32 type)
+{
+}
+
+static int alloc_page_type(struct page_info *page, u32 type)
+{
+ return 1;
+}
+
+unsigned long __get_free_pages(unsigned int mask, unsigned int order)
+{
+ void *p = alloc_xenheap_pages(order);
+
+ memset(p,0,PAGE_SIZE<<order);
+ return (unsigned long)p;
+}
+
+void __free_pages(struct page_info *page, unsigned int order)
+{
+ if (order) BUG();
+ free_xenheap_page(page);
+}
+
+void *pgtable_quicklist_alloc(void)
+{
+ void *p;
+ p = alloc_xenheap_pages(0);
+ if (p)
+ clear_page(p);
+ return p;
+}
+
+void pgtable_quicklist_free(void *pgtable_entry)
+{
+ free_xenheap_page(pgtable_entry);
+}
+
+void cleanup_writable_pagetable(struct domain *d)
+{
+ return;
+}
+
+void put_page_type(struct page_info *page)
+{
+ u32 nx, x, y = page->u.inuse.type_info;
+
+ again:
+ do {
+ x = y;
+ nx = x - 1;
+
+ ASSERT((x & PGT_count_mask) != 0);
+
+ /*
+ * The page should always be validated while a reference is held. The
+ * exception is during domain destruction, when we forcibly invalidate
+ * page-table pages if we detect a referential loop.
+ * See domain.c:relinquish_list().
+ */
+ ASSERT((x & PGT_validated) ||
+ test_bit(_DOMF_dying, &page_get_owner(page)->domain_flags));
+
+ if ( unlikely((nx & PGT_count_mask) == 0) )
+ {
+ /* Record TLB information for flush later. Races are harmless. */
+ page->tlbflush_timestamp = tlbflush_current_time();
+
+ if ( unlikely((nx & PGT_type_mask) <= PGT_l4_page_table) &&
+ likely(nx & PGT_validated) )
+ {
+ /*
+ * Page-table pages must be unvalidated when count is zero. The
+ * 'free' is safe because the refcnt is non-zero and validated
+ * bit is clear => other ops will spin or fail.
+ */
+ if ( unlikely((y = cmpxchg(&page->u.inuse.type_info, x,
+ x & ~PGT_validated)) != x) )
+ goto again;
+ /* We cleared the 'valid bit' so we do the clean up. */
+ free_page_type(page, x);
+ /* Carry on, but with the 'valid bit' now clear. */
+ x &= ~PGT_validated;
+ nx &= ~PGT_validated;
+ }
+ }
+ else if ( unlikely(((nx & (PGT_pinned | PGT_count_mask)) ==
+ (PGT_pinned | 1)) &&
+ ((nx & PGT_type_mask) != PGT_writable_page)) )
+ {
+ /* Page is now only pinned. Make the back pointer mutable again. */
+ nx |= PGT_va_mutable;
+ }
+ }
+ while ( unlikely((y = cmpxchg(&page->u.inuse.type_info, x, nx)) != x) );
+}
+
+
+int get_page_type(struct page_info *page, u32 type)
+{
+ u32 nx, x, y = page->u.inuse.type_info;
+
+ again:
+ do {
+ x = y;
+ nx = x + 1;
+ if ( unlikely((nx & PGT_count_mask) == 0) )
+ {
+ MEM_LOG("Type count overflow on pfn %lx", page_to_mfn(page));
+ return 0;
+ }
+ else if ( unlikely((x & PGT_count_mask) == 0) )
+ {
+ if ( (x & (PGT_type_mask|PGT_va_mask)) != type )
+ {
+ if ( (x & PGT_type_mask) != (type & PGT_type_mask) )
+ {
+ /*
+ * On type change we check to flush stale TLB
+ * entries. This may be unnecessary (e.g., page
+ * was GDT/LDT) but those circumstances should be
+ * very rare.
+ */
+ cpumask_t mask =
+ page_get_owner(page)->domain_dirty_cpumask;
+ tlbflush_filter(mask, page->tlbflush_timestamp);
+
+ if ( unlikely(!cpus_empty(mask)) )
+ {
+ perfc_incrc(need_flush_tlb_flush);
+ flush_tlb_mask(mask);
+ }
+ }
+
+ /* We lose existing type, back pointer, and validity. */
+ nx &= ~(PGT_type_mask | PGT_va_mask | PGT_validated);
+ nx |= type;
+
+ /* No special validation needed for writable pages. */
+ /* Page tables and GDT/LDT need to be scanned for validity. */
+ if ( type == PGT_writable_page )
+ nx |= PGT_validated;
+ }
+ }
+ else
+ {
+ if ( unlikely((x & (PGT_type_mask|PGT_va_mask)) != type) )
+ {
+ if ( unlikely((x & PGT_type_mask) != (type & PGT_type_mask) ) )
+ {
+ if ( current->domain == page_get_owner(page) )
+ {
+ /*
+ * This ensures functions like set_gdt() see up-to-date
+ * type info without needing to clean up writable p.t.
+ * state on the fast path.
+ */
+ LOCK_BIGLOCK(current->domain);
+ cleanup_writable_pagetable(current->domain);
+ y = page->u.inuse.type_info;
+ UNLOCK_BIGLOCK(current->domain);
+ /* Can we make progress now? */
+ if ( ((y & PGT_type_mask) == (type & PGT_type_mask)) ||
+ ((y & PGT_count_mask) == 0) )
+ goto again;
+ }
+ if ( ((x & PGT_type_mask) != PGT_l2_page_table) ||
+ ((type & PGT_type_mask) != PGT_l1_page_table) )
+ MEM_LOG("Bad type (saw %08x != exp %08x) "
+ "for mfn %016lx (pfn %016lx)",
+ x, type, page_to_mfn(page),
+ get_gpfn_from_mfn(page_to_mfn(page)));
+ return 0;
+ }
+ else if ( (x & PGT_va_mask) == PGT_va_mutable )
+ {
+ /* The va backpointer is mutable, hence we update it. */
+ nx &= ~PGT_va_mask;
+ nx |= type; /* we know the actual type is correct */
+ }
+ else if ( ((type & PGT_va_mask) != PGT_va_mutable) &&
+ ((type & PGT_va_mask) != (x & PGT_va_mask)) )
+ {
+#ifdef CONFIG_X86_PAE
+ /* We use backptr as extra typing. Cannot be unknown. */
+ if ( (type & PGT_type_mask) == PGT_l2_page_table )
+ return 0;
+#endif
+ /* This table is possibly mapped at multiple locations. */
+ nx &= ~PGT_va_mask;
+ nx |= PGT_va_unknown;
+ }
+ }
+ if ( unlikely(!(x & PGT_validated)) )
+ {
+ /* Someone else is updating validation of this page. Wait... */
+ while ( (y = page->u.inuse.type_info) == x )
+ cpu_relax();
+ goto again;
+ }
+ }
+ }
+ while ( unlikely((y = cmpxchg(&page->u.inuse.type_info, x, nx)) != x) );
+
+ if ( unlikely(!(nx & PGT_validated)) )
+ {
+ /* Try to validate page type; drop the new reference on failure. */
+ if ( unlikely(!alloc_page_type(page, type)) )
+ {
+ MEM_LOG("Error while validating mfn %lx (pfn %lx) for type %08x"
+ ": caf=%08x taf=%" PRtype_info,
+ page_to_mfn(page), get_gpfn_from_mfn(page_to_mfn(page)),
+ type, page->count_info, page->u.inuse.type_info);
+ /* Noone else can get a reference. We hold the only ref. */
+ page->u.inuse.type_info = 0;
+ return 0;
+ }
+
+ /* Noone else is updating simultaneously. */
+ __set_bit(_PGT_validated, &page->u.inuse.type_info);
+ }
+
+ return 1;
+}
+
/*
* Local variables:
* mode: C
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/xenmisc.c
--- a/xen/arch/ia64/xen/xenmisc.c Mon Jun 05 14:23:57 2006 -0600
+++ b/xen/arch/ia64/xen/xenmisc.c Mon Jun 05 14:28:39 2006 -0600
@@ -19,7 +19,6 @@
#include <public/sched.h>
#include <asm/vhpt.h>
#include <asm/debugger.h>
-#include <asm/vmx.h>
#include <asm/vmx_vcpu.h>
#include <asm/vcpu.h>
@@ -56,90 +55,7 @@ is_platform_hp_ski(void)
return 1;
}
-long
-platform_is_hp_ski(void)
-{
- extern long running_on_sim;
- return running_on_sim;
-}
-
-
struct pt_regs *guest_cpu_user_regs(void) { return vcpu_regs(current); }
-
-unsigned long
-gmfn_to_mfn_foreign(struct domain *d, unsigned long gpfn)
-{
- unsigned long pte;
-
-#ifndef CONFIG_XEN_IA64_DOM0_VP
- if (d == dom0)
- return(gpfn);
-#endif
- pte = lookup_domain_mpa(d,gpfn << PAGE_SHIFT);
- if (!pte) {
- panic("gmfn_to_mfn_foreign: bad gpfn. spinning...\n");
- }
- return ((pte & _PFN_MASK) >> PAGE_SHIFT);
-}
-
-#if 0
-u32
-mfn_to_gmfn(struct domain *d, unsigned long frame)
-{
- // FIXME: is this right?
-if ((frame << PAGE_SHIFT) & _PAGE_PPN_MASK) {
-printk("mfn_to_gmfn: bad frame. spinning...\n");
-while(1);
-}
- return frame;
-}
-#endif
-
-///////////////////////////////
-// from arch/x86/memory.c
-///////////////////////////////
-
-
-static void free_page_type(struct page_info *page, u32 type)
-{
-}
-
-static int alloc_page_type(struct page_info *page, u32 type)
-{
- return 1;
-}
-
-///////////////////////////////
-//// misc memory stuff
-///////////////////////////////
-
-unsigned long __get_free_pages(unsigned int mask, unsigned int order)
-{
- void *p = alloc_xenheap_pages(order);
-
- memset(p,0,PAGE_SIZE<<order);
- return (unsigned long)p;
-}
-
-void __free_pages(struct page_info *page, unsigned int order)
-{
- if (order) BUG();
- free_xenheap_page(page);
-}
-
-void *pgtable_quicklist_alloc(void)
-{
- void *p;
- p = alloc_xenheap_pages(0);
- if (p)
- clear_page(p);
- return p;
-}
-
-void pgtable_quicklist_free(void *pgtable_entry)
-{
- free_xenheap_page(pgtable_entry);
-}
///////////////////////////////
// from arch/ia64/traps.c
@@ -246,74 +162,6 @@ void *__module_text_address(unsigned lon
void *__module_text_address(unsigned long addr) { return NULL; }
void *module_text_address(unsigned long addr) { return NULL; }
-unsigned long context_switch_count = 0;
-
-extern struct vcpu *ia64_switch_to (struct vcpu *next_task);
-
-
-void context_switch(struct vcpu *prev, struct vcpu *next)
-{
- uint64_t spsr;
- uint64_t pta;
-
- local_irq_save(spsr);
- context_switch_count++;
-
- __ia64_save_fpu(prev->arch._thread.fph);
- __ia64_load_fpu(next->arch._thread.fph);
- if (VMX_DOMAIN(prev))
- vmx_save_state(prev);
- if (VMX_DOMAIN(next))
- vmx_load_state(next);
- /*ia64_psr(ia64_task_regs(next))->dfh = !ia64_is_local_fpu_owner(next);*/
- prev = ia64_switch_to(next);
-
- //cpu_set(smp_processor_id(), current->domain->domain_dirty_cpumask);
-
- if (!VMX_DOMAIN(current)){
- vcpu_set_next_timer(current);
- }
-
-
-// leave this debug for now: it acts as a heartbeat when more than
-// one domain is active
-{
-static long cnt[16] = { 50,50,50,50,50,50,50,50,50,50,50,50,50,50,50,50};
-static int i = 100;
-int id = ((struct vcpu *)current)->domain->domain_id & 0xf;
-if (!cnt[id]--) { cnt[id] = 500000; printk("%x",id); }
-if (!i--) { i = 1000000; printk("+"); }
-}
-
- if (VMX_DOMAIN(current)){
- vmx_load_all_rr(current);
- }else{
- extern char ia64_ivt;
- ia64_set_iva(&ia64_ivt);
- if (!is_idle_domain(current->domain)) {
- ia64_set_pta(VHPT_ADDR | (1 << 8) | (VHPT_SIZE_LOG2 << 2) |
- VHPT_ENABLED);
- load_region_regs(current);
- vcpu_load_kernel_regs(current);
- if (vcpu_timer_expired(current))
- vcpu_pend_timer(current);
- }else {
- /* When switching to idle domain, only need to disable vhpt
- * walker. Then all accesses happen within idle context will
- * be handled by TR mapping and identity mapping.
- */
- pta = ia64_get_pta();
- ia64_set_pta(pta & ~VHPT_ENABLED);
- }
- }
- local_irq_restore(spsr);
- context_saved(prev);
-}
-
-void continue_running(struct vcpu *same)
-{
- /* nothing to do */
-}
void arch_dump_domain_info(struct domain *d)
{
@@ -340,202 +188,3 @@ void panic_domain(struct pt_regs *regs,
}
domain_crash_synchronous ();
}
-
-///////////////////////////////
-// from arch/x86/mm.c
-///////////////////////////////
-
-#ifdef VERBOSE
-#define MEM_LOG(_f, _a...) \
- printk("DOM%u: (file=mm.c, line=%d) " _f "\n", \
- current->domain->domain_id , __LINE__ , ## _a )
-#else
-#define MEM_LOG(_f, _a...) ((void)0)
-#endif
-
-void cleanup_writable_pagetable(struct domain *d)
-{
- return;
-}
-
-void put_page_type(struct page_info *page)
-{
- u32 nx, x, y = page->u.inuse.type_info;
-
- again:
- do {
- x = y;
- nx = x - 1;
-
- ASSERT((x & PGT_count_mask) != 0);
-
- /*
- * The page should always be validated while a reference is held. The
- * exception is during domain destruction, when we forcibly invalidate
- * page-table pages if we detect a referential loop.
- * See domain.c:relinquish_list().
- */
- ASSERT((x & PGT_validated) ||
- test_bit(_DOMF_dying, &page_get_owner(page)->domain_flags));
-
- if ( unlikely((nx & PGT_count_mask) == 0) )
- {
- /* Record TLB information for flush later. Races are harmless. */
- page->tlbflush_timestamp = tlbflush_current_time();
-
- if ( unlikely((nx & PGT_type_mask) <= PGT_l4_page_table) &&
- likely(nx & PGT_validated) )
- {
- /*
- * Page-table pages must be unvalidated when count is zero. The
- * 'free' is safe because the refcnt is non-zero and validated
- * bit is clear => other ops will spin or fail.
- */
- if ( unlikely((y = cmpxchg(&page->u.inuse.type_info, x,
- x & ~PGT_validated)) != x) )
- goto again;
- /* We cleared the 'valid bit' so we do the clean up. */
- free_page_type(page, x);
- /* Carry on, but with the 'valid bit' now clear. */
- x &= ~PGT_validated;
- nx &= ~PGT_validated;
- }
- }
- else if ( unlikely(((nx & (PGT_pinned | PGT_count_mask)) ==
- (PGT_pinned | 1)) &&
- ((nx & PGT_type_mask) != PGT_writable_page)) )
- {
- /* Page is now only pinned. Make the back pointer mutable again. */
- nx |= PGT_va_mutable;
- }
- }
- while ( unlikely((y = cmpxchg(&page->u.inuse.type_info, x, nx)) != x) );
-}
-
-
-int get_page_type(struct page_info *page, u32 type)
-{
- u32 nx, x, y = page->u.inuse.type_info;
-
- again:
- do {
- x = y;
- nx = x + 1;
- if ( unlikely((nx & PGT_count_mask) == 0) )
- {
- MEM_LOG("Type count overflow on pfn %lx", page_to_mfn(page));
- return 0;
- }
- else if ( unlikely((x & PGT_count_mask) == 0) )
- {
- if ( (x & (PGT_type_mask|PGT_va_mask)) != type )
- {
- if ( (x & PGT_type_mask) != (type & PGT_type_mask) )
- {
- /*
- * On type change we check to flush stale TLB
- * entries. This may be unnecessary (e.g., page
- * was GDT/LDT) but those circumstances should be
- * very rare.
- */
- cpumask_t mask =
- page_get_owner(page)->domain_dirty_cpumask;
- tlbflush_filter(mask, page->tlbflush_timestamp);
-
- if ( unlikely(!cpus_empty(mask)) )
- {
- perfc_incrc(need_flush_tlb_flush);
- flush_tlb_mask(mask);
- }
- }
-
- /* We lose existing type, back pointer, and validity. */
- nx &= ~(PGT_type_mask | PGT_va_mask | PGT_validated);
- nx |= type;
-
- /* No special validation needed for writable pages. */
- /* Page tables and GDT/LDT need to be scanned for validity. */
- if ( type == PGT_writable_page )
- nx |= PGT_validated;
- }
- }
- else
- {
- if ( unlikely((x & (PGT_type_mask|PGT_va_mask)) != type) )
- {
- if ( unlikely((x & PGT_type_mask) != (type & PGT_type_mask) ) )
- {
- if ( current->domain == page_get_owner(page) )
- {
- /*
- * This ensures functions like set_gdt() see up-to-date
- * type info without needing to clean up writable p.t.
- * state on the fast path.
- */
- LOCK_BIGLOCK(current->domain);
- cleanup_writable_pagetable(current->domain);
- y = page->u.inuse.type_info;
- UNLOCK_BIGLOCK(current->domain);
- /* Can we make progress now? */
- if ( ((y & PGT_type_mask) == (type & PGT_type_mask)) ||
- ((y & PGT_count_mask) == 0) )
- goto again;
- }
- if ( ((x & PGT_type_mask) != PGT_l2_page_table) ||
- ((type & PGT_type_mask) != PGT_l1_page_table) )
- MEM_LOG("Bad type (saw %08x != exp %08x) "
- "for mfn %016lx (pfn %016lx)",
- x, type, page_to_mfn(page),
- get_gpfn_from_mfn(page_to_mfn(page)));
- return 0;
- }
- else if ( (x & PGT_va_mask) == PGT_va_mutable )
- {
- /* The va backpointer is mutable, hence we update it. */
- nx &= ~PGT_va_mask;
- nx |= type; /* we know the actual type is correct */
- }
- else if ( ((type & PGT_va_mask) != PGT_va_mutable) &&
- ((type & PGT_va_mask) != (x & PGT_va_mask)) )
- {
-#ifdef CONFIG_X86_PAE
- /* We use backptr as extra typing. Cannot be unknown. */
- if ( (type & PGT_type_mask) == PGT_l2_page_table )
- return 0;
-#endif
- /* This table is possibly mapped at multiple locations. */
- nx &= ~PGT_va_mask;
- nx |= PGT_va_unknown;
- }
- }
- if ( unlikely(!(x & PGT_validated)) )
- {
- /* Someone else is updating validation of this page. Wait... */
- while ( (y = page->u.inuse.type_info) == x )
- cpu_relax();
- goto again;
- }
- }
- }
- while ( unlikely((y = cmpxchg(&page->u.inuse.type_info, x, nx)) != x) );
-
- if ( unlikely(!(nx & PGT_validated)) )
- {
- /* Try to validate page type; drop the new reference on failure. */
- if ( unlikely(!alloc_page_type(page, type)) )
- {
- MEM_LOG("Error while validating mfn %lx (pfn %lx) for type %08x"
- ": caf=%08x taf=%" PRtype_info,
- page_to_mfn(page), get_gpfn_from_mfn(page_to_mfn(page)),
- type, page->count_info, page->u.inuse.type_info);
- /* Noone else can get a reference. We hold the only ref. */
- page->u.inuse.type_info = 0;
- return 0;
- }
-
- /* Noone else is updating simultaneously. */
- __set_bit(_PGT_validated, &page->u.inuse.type_info);
- }
-
- return 1;
-}
diff -r 279628dc2d6f -r f662f98d594b xen/include/asm-ia64/domain.h
--- a/xen/include/asm-ia64/domain.h Mon Jun 05 14:23:57 2006 -0600
+++ b/xen/include/asm-ia64/domain.h Mon Jun 05 14:28:39 2006 -0600
@@ -13,6 +13,9 @@
#include <asm/fpswa.h>
extern void domain_relinquish_resources(struct domain *);
+
+/* given a current domain metaphysical address, return the physical address */
+extern unsigned long translate_domain_mpaddr(unsigned long mpaddr);
/* Flush cache of domain d.
If sync_only is true, only synchronize I&D caches,
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/faults.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/ia64/xen/faults.c Mon Jun 05 14:28:39 2006 -0600
@@ -0,0 +1,662 @@
+
+/*
+ * Miscellaneous process/domain related routines
+ *
+ * Copyright (C) 2004 Hewlett-Packard Co.
+ * Dan Magenheimer (dan.magenheimer@xxxxxx)
+ *
+ */
+
+#include <xen/config.h>
+#include <xen/lib.h>
+#include <xen/errno.h>
+#include <xen/sched.h>
+#include <xen/smp.h>
+#include <asm/ptrace.h>
+#include <xen/delay.h>
+
+#include <asm/system.h>
+#include <asm/processor.h>
+#include <xen/irq.h>
+#include <xen/event.h>
+#include <asm/privop.h>
+#include <asm/vcpu.h>
+#include <asm/ia64_int.h>
+#include <asm/dom_fw.h>
+#include <asm/vhpt.h>
+#include <asm/debugger.h>
+#include <asm/fpswa.h>
+
+extern void die_if_kernel(char *str, struct pt_regs *regs, long err);
+/* FIXME: where these declarations shold be there ? */
+extern int ia64_hyperprivop(unsigned long, REGS *);
+extern IA64FAULT ia64_hypercall(struct pt_regs *regs);
+
+#define IA64_PSR_CPL1 (__IA64_UL(1) << IA64_PSR_CPL1_BIT)
+// note IA64_PSR_PK removed from following, why is this necessary?
+#define DELIVER_PSR_SET (IA64_PSR_IC | IA64_PSR_I | \
+ IA64_PSR_DT | IA64_PSR_RT | IA64_PSR_CPL1 | \
+ IA64_PSR_IT | IA64_PSR_BN)
+
+#define DELIVER_PSR_CLR (IA64_PSR_AC | IA64_PSR_DFL | IA64_PSR_DFH | \
+ IA64_PSR_SP | IA64_PSR_DI | IA64_PSR_SI | \
+ IA64_PSR_DB | IA64_PSR_LP | IA64_PSR_TB | \
+ IA64_PSR_CPL | IA64_PSR_MC | IA64_PSR_IS | \
+ IA64_PSR_ID | IA64_PSR_DA | IA64_PSR_DD | \
+ IA64_PSR_SS | IA64_PSR_RI | IA64_PSR_ED | IA64_PSR_IA)
+
+
+extern void do_ssc(unsigned long ssc, struct pt_regs *regs);
+
+unsigned long slow_reflect_count[0x80] = { 0 };
+unsigned long fast_reflect_count[0x80] = { 0 };
+
+#define inc_slow_reflect_count(vec) slow_reflect_count[vec>>8]++;
+
+void zero_reflect_counts(void)
+{
+ int i;
+ for (i=0; i<0x80; i++) slow_reflect_count[i] = 0;
+ for (i=0; i<0x80; i++) fast_reflect_count[i] = 0;
+}
+
+int dump_reflect_counts(char *buf)
+{
+ int i,j,cnt;
+ char *s = buf;
+
+ s += sprintf(s,"Slow reflections by vector:\n");
+ for (i = 0, j = 0; i < 0x80; i++) {
+ if ( (cnt = slow_reflect_count[i]) != 0 ) {
+ s += sprintf(s,"0x%02x00:%10d, ",i,cnt);
+ if ((j++ & 3) == 3) s += sprintf(s,"\n");
+ }
+ }
+ if (j & 3) s += sprintf(s,"\n");
+ s += sprintf(s,"Fast reflections by vector:\n");
+ for (i = 0, j = 0; i < 0x80; i++) {
+ if ( (cnt = fast_reflect_count[i]) != 0 ) {
+ s += sprintf(s,"0x%02x00:%10d, ",i,cnt);
+ if ((j++ & 3) == 3) s += sprintf(s,"\n");
+ }
+ }
+ if (j & 3) s += sprintf(s,"\n");
+ return s - buf;
+}
+
+// should never panic domain... if it does, stack may have been overrun
+void check_bad_nested_interruption(unsigned long isr, struct pt_regs *regs,
unsigned long vector)
+{
+ struct vcpu *v = current;
+
+ if (!(PSCB(v,ipsr) & IA64_PSR_DT)) {
+ panic_domain(regs,"psr.dt off, trying to deliver nested
dtlb!\n");
+ }
+ vector &= ~0xf;
+ if (vector != IA64_DATA_TLB_VECTOR &&
+ vector != IA64_ALT_DATA_TLB_VECTOR &&
+ vector != IA64_VHPT_TRANS_VECTOR) {
+ panic_domain(regs,"psr.ic off, delivering
fault=%lx,ipsr=%lx,iip=%lx,ifa=%lx,isr=%lx,PSCB.iip=%lx\n",
+
vector,regs->cr_ipsr,regs->cr_iip,PSCB(v,ifa),isr,PSCB(v,iip));
+ }
+}
+
+void reflect_interruption(unsigned long isr, struct pt_regs *regs, unsigned
long vector)
+{
+ struct vcpu *v = current;
+
+ if (!PSCB(v,interrupt_collection_enabled))
+ check_bad_nested_interruption(isr,regs,vector);
+ PSCB(v,unat) = regs->ar_unat; // not sure if this is really needed?
+ PSCB(v,precover_ifs) = regs->cr_ifs;
+ vcpu_bsw0(v);
+ PSCB(v,ipsr) = vcpu_get_ipsr_int_state(v,regs->cr_ipsr);
+ PSCB(v,isr) = isr;
+ PSCB(v,iip) = regs->cr_iip;
+ PSCB(v,ifs) = 0;
+ PSCB(v,incomplete_regframe) = 0;
+
+ regs->cr_iip = ((unsigned long) PSCBX(v,iva) + vector) & ~0xffUL;
+ regs->cr_ipsr = (regs->cr_ipsr & ~DELIVER_PSR_CLR) | DELIVER_PSR_SET;
+ regs->r31 = XSI_IPSR;
+
+ v->vcpu_info->evtchn_upcall_mask = 1;
+ PSCB(v,interrupt_collection_enabled) = 0;
+
+ inc_slow_reflect_count(vector);
+}
+
+static unsigned long pending_false_positive = 0;
+
+void reflect_extint(struct pt_regs *regs)
+{
+ unsigned long isr = regs->cr_ipsr & IA64_PSR_RI;
+ struct vcpu *v = current;
+ static int first_extint = 1;
+
+ if (first_extint) {
+ printf("Delivering first extint to domain: isr=0x%lx,
iip=0x%lx\n", isr, regs->cr_iip);
+ first_extint = 0;
+ }
+ if (vcpu_timer_pending_early(v))
+printf("*#*#*#* about to deliver early timer to domain
%d!!!\n",v->domain->domain_id);
+ PSCB(current,itir) = 0;
+ reflect_interruption(isr,regs,IA64_EXTINT_VECTOR);
+}
+
+void reflect_event(struct pt_regs *regs)
+{
+ unsigned long isr = regs->cr_ipsr & IA64_PSR_RI;
+ struct vcpu *v = current;
+
+ /* Sanity check */
+ if (is_idle_vcpu(v) || !user_mode(regs)) {
+ //printk("WARN: invocation to reflect_event in nested xen\n");
+ return;
+ }
+
+ if (!event_pending(v))
+ return;
+
+ if (!PSCB(v,interrupt_collection_enabled))
+ printf("psr.ic off, delivering event,
ipsr=%lx,iip=%lx,isr=%lx,viip=0x%lx\n",
+ regs->cr_ipsr, regs->cr_iip, isr, PSCB(v, iip));
+ PSCB(v,unat) = regs->ar_unat; // not sure if this is really needed?
+ PSCB(v,precover_ifs) = regs->cr_ifs;
+ vcpu_bsw0(v);
+ PSCB(v,ipsr) = vcpu_get_ipsr_int_state(v,regs->cr_ipsr);
+ PSCB(v,isr) = isr;
+ PSCB(v,iip) = regs->cr_iip;
+ PSCB(v,ifs) = 0;
+ PSCB(v,incomplete_regframe) = 0;
+
+ regs->cr_iip = v->arch.event_callback_ip;
+ regs->cr_ipsr = (regs->cr_ipsr & ~DELIVER_PSR_CLR) | DELIVER_PSR_SET;
+ regs->r31 = XSI_IPSR;
+
+ v->vcpu_info->evtchn_upcall_mask = 1;
+ PSCB(v,interrupt_collection_enabled) = 0;
+}
+
+// ONLY gets called from ia64_leave_kernel
+// ONLY call with interrupts disabled?? (else might miss one?)
+// NEVER successful if already reflecting a trap/fault because psr.i==0
+void deliver_pending_interrupt(struct pt_regs *regs)
+{
+ struct domain *d = current->domain;
+ struct vcpu *v = current;
+ // FIXME: Will this work properly if doing an RFI???
+ if (!is_idle_domain(d) && user_mode(regs)) {
+ if (vcpu_deliverable_interrupts(v))
+ reflect_extint(regs);
+ else if (PSCB(v,pending_interruption))
+ ++pending_false_positive;
+ }
+}
+unsigned long lazy_cover_count = 0;
+
+static int
+handle_lazy_cover(struct vcpu *v, struct pt_regs *regs)
+{
+ if (!PSCB(v,interrupt_collection_enabled)) {
+ PSCB(v,ifs) = regs->cr_ifs;
+ PSCB(v,incomplete_regframe) = 1;
+ regs->cr_ifs = 0;
+ lazy_cover_count++;
+ return(1); // retry same instruction with cr.ifs off
+ }
+ return(0);
+}
+
+void ia64_do_page_fault (unsigned long address, unsigned long isr, struct
pt_regs *regs, unsigned long itir)
+{
+ unsigned long iip = regs->cr_iip, iha;
+ // FIXME should validate address here
+ unsigned long pteval;
+ unsigned long is_data = !((isr >> IA64_ISR_X_BIT) & 1UL);
+ IA64FAULT fault;
+
+ if ((isr & IA64_ISR_IR) && handle_lazy_cover(current, regs)) return;
+ if ((isr & IA64_ISR_SP)
+ || ((isr & IA64_ISR_NA) && (isr & IA64_ISR_CODE_MASK) ==
IA64_ISR_CODE_LFETCH))
+ {
+ /*
+ * This fault was due to a speculative load or lfetch.fault,
set the "ed"
+ * bit in the psr to ensure forward progress. (Target register
will get a
+ * NaT for ld.s, lfetch will be canceled.)
+ */
+ ia64_psr(regs)->ed = 1;
+ return;
+ }
+
+ again:
+ fault = vcpu_translate(current,address,is_data,&pteval,&itir,&iha);
+ if (fault == IA64_NO_FAULT || fault == IA64_USE_TLB) {
+ u64 logps;
+ pteval = translate_domain_pte(pteval, address, itir, &logps);
+ vcpu_itc_no_srlz(current,is_data?2:1,address,pteval,-1UL,logps);
+ if (fault == IA64_USE_TLB && !current->arch.dtlb.pte.p) {
+ /* dtlb has been purged in-between. This dtlb was
+ matching. Undo the work. */
+ vcpu_flush_tlb_vhpt_range (address, 1);
+ goto again;
+ }
+ return;
+ }
+
+ if (!user_mode (regs)) {
+ /* The fault occurs inside Xen. */
+ if (!ia64_done_with_exception(regs)) {
+ // should never happen. If it does, region 0 addr may
+ // indicate a bad xen pointer
+ printk("*** xen_handle_domain_access: exception table"
+ " lookup failed, iip=0x%lx, addr=0x%lx,
spinning...\n",
+ iip, address);
+ panic_domain(regs,"*** xen_handle_domain_access:
exception table"
+ " lookup failed, iip=0x%lx, addr=0x%lx,
spinning...\n",
+ iip, address);
+ }
+ return;
+ }
+ if (!PSCB(current,interrupt_collection_enabled)) {
+ check_bad_nested_interruption(isr,regs,fault);
+ //printf("Delivering NESTED DATA TLB fault\n");
+ fault = IA64_DATA_NESTED_TLB_VECTOR;
+ regs->cr_iip = ((unsigned long) PSCBX(current,iva) + fault) &
~0xffUL;
+ regs->cr_ipsr = (regs->cr_ipsr & ~DELIVER_PSR_CLR) |
DELIVER_PSR_SET;
+ // NOTE: nested trap must NOT pass PSCB address
+ //regs->r31 = (unsigned long) &PSCB(current);
+ inc_slow_reflect_count(fault);
+ return;
+ }
+
+ PSCB(current,itir) = itir;
+ PSCB(current,iha) = iha;
+ PSCB(current,ifa) = address;
+ reflect_interruption(isr, regs, fault);
+}
+
+fpswa_interface_t *fpswa_interface = 0;
+
+void trap_init (void)
+{
+ if (ia64_boot_param->fpswa)
+ /* FPSWA fixup: make the interface pointer a virtual address: */
+ fpswa_interface = __va(ia64_boot_param->fpswa);
+ else
+ printk("No FPSWA supported.\n");
+}
+
+static fpswa_ret_t
+fp_emulate (int fp_fault, void *bundle, unsigned long *ipsr,
+ unsigned long *fpsr, unsigned long *isr, unsigned long *pr,
+ unsigned long *ifs, struct pt_regs *regs)
+{
+ fp_state_t fp_state;
+ fpswa_ret_t ret;
+
+ if (!fpswa_interface)
+ return ((fpswa_ret_t) {-1, 0, 0, 0});
+
+ memset(&fp_state, 0, sizeof(fp_state_t));
+
+ /*
+ * compute fp_state. only FP registers f6 - f11 are used by the
+ * kernel, so set those bits in the mask and set the low volatile
+ * pointer to point to these registers.
+ */
+ fp_state.bitmask_low64 = 0xfc0; /* bit6..bit11 */
+
+ fp_state.fp_state_low_volatile = (fp_state_low_volatile_t *) ®s->f6;
+ /*
+ * unsigned long (*EFI_FPSWA) (
+ * unsigned long trap_type,
+ * void *Bundle,
+ * unsigned long *pipsr,
+ * unsigned long *pfsr,
+ * unsigned long *pisr,
+ * unsigned long *ppreds,
+ * unsigned long *pifs,
+ * void *fp_state);
+ */
+ ret = (*fpswa_interface->fpswa)(fp_fault, bundle,
+ ipsr, fpsr, isr, pr, ifs, &fp_state);
+
+ return ret;
+}
+
+/*
+ * Handle floating-point assist faults and traps for domain.
+ */
+unsigned long
+handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr)
+{
+ struct vcpu *v = current;
+ IA64_BUNDLE bundle;
+ IA64_BUNDLE __get_domain_bundle(UINT64);
+ unsigned long fault_ip;
+ fpswa_ret_t ret;
+
+ fault_ip = regs->cr_iip;
+ /*
+ * When the FP trap occurs, the trapping instruction is completed.
+ * If ipsr.ri == 0, there is the trapping instruction in previous
bundle.
+ */
+ if (!fp_fault && (ia64_psr(regs)->ri == 0))
+ fault_ip -= 16;
+ bundle = __get_domain_bundle(fault_ip);
+ if (!bundle.i64[0] && !bundle.i64[1]) {
+ printk("%s: floating-point bundle at 0x%lx not mapped\n",
+ __FUNCTION__, fault_ip);
+ return -1;
+ }
+
+ ret = fp_emulate(fp_fault, &bundle, ®s->cr_ipsr, ®s->ar_fpsr,
+ &isr, ®s->pr, ®s->cr_ifs, regs);
+
+ if (ret.status) {
+ PSCBX(v, fpswa_ret) = ret;
+ printk("%s(%s): fp_emulate() returned %ld\n",
+ __FUNCTION__, fp_fault?"fault":"trap", ret.status);
+ }
+
+ return ret.status;
+}
+
+void
+ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
+ unsigned long iim, unsigned long itir, unsigned long arg5,
+ unsigned long arg6, unsigned long arg7, unsigned long stack)
+{
+ struct pt_regs *regs = (struct pt_regs *) &stack;
+ unsigned long code;
+ static const char *reason[] = {
+ "IA-64 Illegal Operation fault",
+ "IA-64 Privileged Operation fault",
+ "IA-64 Privileged Register fault",
+ "IA-64 Reserved Register/Field fault",
+ "Disabled Instruction Set Transition fault",
+ "Unknown fault 5", "Unknown fault 6", "Unknown fault 7",
"Illegal Hazard fault",
+ "Unknown fault 9", "Unknown fault 10", "Unknown fault 11",
"Unknown fault 12",
+ "Unknown fault 13", "Unknown fault 14", "Unknown fault 15"
+ };
+
+ printf("ia64_fault, vector=0x%lx, ifa=0x%016lx, iip=0x%016lx,
ipsr=0x%016lx, isr=0x%016lx\n",
+ vector, ifa, regs->cr_iip, regs->cr_ipsr, isr);
+
+
+ if ((isr & IA64_ISR_NA) && ((isr & IA64_ISR_CODE_MASK) ==
IA64_ISR_CODE_LFETCH)) {
+ /*
+ * This fault was due to lfetch.fault, set "ed" bit in the psr
to cancel
+ * the lfetch.
+ */
+ ia64_psr(regs)->ed = 1;
+ printf("ia64_fault: handled lfetch.fault\n");
+ return;
+ }
+
+ switch (vector) {
+ case 0:
+ printk("VHPT Translation.\n");
+ break;
+
+ case 4:
+ printk("Alt DTLB.\n");
+ break;
+
+ case 6:
+ printk("Instruction Key Miss.\n");
+ break;
+
+ case 7:
+ printk("Data Key Miss.\n");
+ break;
+
+ case 8:
+ printk("Dirty-bit.\n");
+ break;
+
+ case 20:
+ printk("Page Not Found.\n");
+ break;
+
+ case 21:
+ printk("Key Permission.\n");
+ break;
+
+ case 22:
+ printk("Instruction Access Rights.\n");
+ break;
+
+ case 24: /* General Exception */
+ code = (isr >> 4) & 0xf;
+ printk("General Exception: %s%s.\n", reason[code],
+ (code == 3) ? ((isr & (1UL << 37)) ? " (RSE access)" :
+ " (data access)") : "");
+ if (code == 8) {
+# ifdef CONFIG_IA64_PRINT_HAZARDS
+ printk("%s[%d]: possible hazard @ ip=%016lx (pr =
%016lx)\n",
+ current->comm, current->pid,
+ regs->cr_iip + ia64_psr(regs)->ri,
+ regs->pr);
+# endif
+ printf("ia64_fault: returning on hazard\n");
+ return;
+ }
+ break;
+
+ case 25:
+ printk("Disabled FP-Register.\n");
+ break;
+
+ case 26:
+ printk("NaT consumption.\n");
+ break;
+
+ case 29:
+ printk("Debug.\n");
+ break;
+
+ case 30:
+ printk("Unaligned Reference.\n");
+ break;
+
+ case 31:
+ printk("Unsupported data reference.\n");
+ break;
+
+ case 32:
+ printk("Floating-Point Fault.\n");
+ break;
+
+ case 33:
+ printk("Floating-Point Trap.\n");
+ break;
+
+ case 34:
+ printk("Lower Privilege Transfer Trap.\n");
+ break;
+
+ case 35:
+ printk("Taken Branch Trap.\n");
+ break;
+
+ case 36:
+ printk("Single Step Trap.\n");
+ break;
+
+ case 45:
+ printk("IA-32 Exception.\n");
+ break;
+
+ case 46:
+ printk("IA-32 Intercept.\n");
+ break;
+
+ case 47:
+ printk("IA-32 Interrupt.\n");
+ break;
+
+ default:
+ printk("Fault %lu\n", vector);
+ break;
+ }
+
+ show_registers(regs);
+ panic("Fault in Xen.\n");
+}
+
+unsigned long running_on_sim = 0;
+
+
+/* Also read in hyperprivop.S */
+int first_break = 0;
+
+void
+ia64_handle_break (unsigned long ifa, struct pt_regs *regs, unsigned long isr,
unsigned long iim)
+{
+ struct domain *d = current->domain;
+ struct vcpu *v = current;
+ IA64FAULT vector;
+
+ if (iim == 0x80001 || iim == 0x80002) { //FIXME: don't hardcode constant
+ do_ssc(vcpu_get_gr(current,36), regs);
+ }
+#ifdef CRASH_DEBUG
+ else if ((iim == 0 || iim == CDB_BREAK_NUM) && !user_mode(regs)) {
+ if (iim == 0)
+ show_registers(regs);
+ debugger_trap_fatal(0 /* don't care */, regs);
+ }
+#endif
+ else if (iim == d->arch.breakimm) {
+ /* by default, do not continue */
+ v->arch.hypercall_continuation = 0;
+
+ if ((vector = ia64_hypercall(regs)) == IA64_NO_FAULT) {
+ if (!PSCBX(v, hypercall_continuation))
+ vcpu_increment_iip(current);
+ }
+ else reflect_interruption(isr, regs, vector);
+ }
+ else if (!PSCB(v,interrupt_collection_enabled)) {
+ if (ia64_hyperprivop(iim,regs))
+ vcpu_increment_iip(current);
+ }
+ else {
+ if (iim == 0)
+ die_if_kernel("bug check", regs, iim);
+ PSCB(v,iim) = iim;
+ reflect_interruption(isr,regs,IA64_BREAK_VECTOR);
+ }
+}
+
+void
+ia64_handle_privop (unsigned long ifa, struct pt_regs *regs, unsigned long
isr, unsigned long itir)
+{
+ IA64FAULT vector;
+
+ vector = priv_emulate(current,regs,isr);
+ if (vector != IA64_NO_FAULT && vector != IA64_RFI_IN_PROGRESS) {
+ // Note: if a path results in a vector to reflect that requires
+ // iha/itir (e.g. vcpu_force_data_miss), they must be set there
+ reflect_interruption(isr,regs,vector);
+ }
+}
+
+/* Used in vhpt.h. */
+#define INTR_TYPE_MAX 10
+UINT64 int_counts[INTR_TYPE_MAX];
+
+void
+ia64_handle_reflection (unsigned long ifa, struct pt_regs *regs, unsigned long
isr, unsigned long iim, unsigned long vector)
+{
+ struct vcpu *v = current;
+ unsigned long check_lazy_cover = 0;
+ unsigned long psr = regs->cr_ipsr;
+
+ /* Following faults shouldn'g be seen from Xen itself */
+ if (!(psr & IA64_PSR_CPL)) BUG();
+
+ switch(vector) {
+ case 8:
+ vector = IA64_DIRTY_BIT_VECTOR; break;
+ case 9:
+ vector = IA64_INST_ACCESS_BIT_VECTOR; break;
+ case 10:
+ check_lazy_cover = 1;
+ vector = IA64_DATA_ACCESS_BIT_VECTOR; break;
+ case 20:
+ check_lazy_cover = 1;
+ vector = IA64_PAGE_NOT_PRESENT_VECTOR; break;
+ case 22:
+ vector = IA64_INST_ACCESS_RIGHTS_VECTOR; break;
+ case 23:
+ check_lazy_cover = 1;
+ vector = IA64_DATA_ACCESS_RIGHTS_VECTOR; break;
+ case 25:
+ vector = IA64_DISABLED_FPREG_VECTOR;
+ break;
+ case 26:
+ if (((isr >> 4L) & 0xfL) == 1) {
+ //regs->eml_unat = 0; FIXME: DO WE NEED THIS??
+ printf("ia64_handle_reflection: handling regNaT
fault\n");
+ vector = IA64_NAT_CONSUMPTION_VECTOR; break;
+ }
+#if 1
+ // pass null pointer dereferences through with no error
+ // but retain debug output for non-zero ifa
+ if (!ifa) {
+ vector = IA64_NAT_CONSUMPTION_VECTOR; break;
+ }
+#endif
+ printf("*** NaT fault... attempting to handle as privop\n");
+ printf("isr=%016lx, ifa=%016lx, iip=%016lx, ipsr=%016lx\n",
+ isr, ifa, regs->cr_iip, psr);
+ //regs->eml_unat = 0; FIXME: DO WE NEED THIS???
+ // certain NaT faults are higher priority than privop faults
+ vector = priv_emulate(v,regs,isr);
+ if (vector == IA64_NO_FAULT) {
+ printf("*** Handled privop masquerading as NaT
fault\n");
+ return;
+ }
+ vector = IA64_NAT_CONSUMPTION_VECTOR; break;
+ case 27:
+ //printf("*** Handled speculation vector,
itc=%lx!\n",ia64_get_itc());
+ PSCB(current,iim) = iim;
+ vector = IA64_SPECULATION_VECTOR; break;
+ case 30:
+ // FIXME: Should we handle unaligned refs in Xen??
+ vector = IA64_UNALIGNED_REF_VECTOR; break;
+ case 32:
+ if (!(handle_fpu_swa(1, regs, isr))) {
+ vcpu_increment_iip(v);
+ return;
+ }
+ printf("ia64_handle_reflection: handling FP fault\n");
+ vector = IA64_FP_FAULT_VECTOR; break;
+ case 33:
+ if (!(handle_fpu_swa(0, regs, isr))) return;
+ printf("ia64_handle_reflection: handling FP trap\n");
+ vector = IA64_FP_TRAP_VECTOR; break;
+ case 34:
+ printf("ia64_handle_reflection: handling lowerpriv trap\n");
+ vector = IA64_LOWERPRIV_TRANSFER_TRAP_VECTOR; break;
+ case 35:
+ printf("ia64_handle_reflection: handling taken branch trap\n");
+ vector = IA64_TAKEN_BRANCH_TRAP_VECTOR; break;
+ case 36:
+ printf("ia64_handle_reflection: handling single step trap\n");
+ vector = IA64_SINGLE_STEP_TRAP_VECTOR; break;
+
+ default:
+ printf("ia64_handle_reflection: unhandled
vector=0x%lx\n",vector);
+ while(vector);
+ return;
+ }
+ if (check_lazy_cover && (isr & IA64_ISR_IR) && handle_lazy_cover(v,
regs)) return;
+ PSCB(current,ifa) = ifa;
+ PSCB(current,itir) = vcpu_get_itir_on_fault(v,ifa);
+ reflect_interruption(isr,regs,vector);
+}
+
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/fw_emul.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/ia64/xen/fw_emul.c Mon Jun 05 14:28:39 2006 -0600
@@ -0,0 +1,453 @@
+#include <xen/config.h>
+#include <asm/system.h>
+#include <asm/pgalloc.h>
+
+#include <linux/efi.h>
+#include <asm/pal.h>
+#include <asm/sal.h>
+
+#include <public/sched.h>
+#include "hpsim_ssc.h"
+#include <asm/vcpu.h>
+#include <asm/dom_fw.h>
+
+extern unsigned long running_on_sim;
+
+struct sal_ret_values
+sal_emulator (long index, unsigned long in1, unsigned long in2,
+ unsigned long in3, unsigned long in4, unsigned long in5,
+ unsigned long in6, unsigned long in7)
+{
+ unsigned long r9 = 0;
+ unsigned long r10 = 0;
+ long r11 = 0;
+ long status;
+
+ status = 0;
+ switch (index) {
+ case SAL_FREQ_BASE:
+ if (!running_on_sim)
+ status = ia64_sal_freq_base(in1,&r9,&r10);
+ else switch (in1) {
+ case SAL_FREQ_BASE_PLATFORM:
+ r9 = 200000000;
+ break;
+
+ case SAL_FREQ_BASE_INTERVAL_TIMER:
+ r9 = 700000000;
+ break;
+
+ case SAL_FREQ_BASE_REALTIME_CLOCK:
+ r9 = 1;
+ break;
+
+ default:
+ status = -1;
+ break;
+ }
+ break;
+ case SAL_PCI_CONFIG_READ:
+ if (current->domain == dom0) {
+ u64 value;
+ // note that args 2&3 are swapped!!
+ status = ia64_sal_pci_config_read(in1,in3,in2,&value);
+ r9 = value;
+ }
+ else
+ printf("NON-PRIV DOMAIN CALLED SAL_PCI_CONFIG_READ\n");
+ break;
+ case SAL_PCI_CONFIG_WRITE:
+ if (current->domain == dom0) {
+ if (((in1 & ~0xffffffffUL) && (in4 == 0)) ||
+ (in4 > 1) ||
+ (in2 > 8) || (in2 & (in2-1)))
+ printf("***
SAL_PCI_CONF_WRITE?!?(adr=0x%lx,typ=0x%lx,sz=0x%lx,val=0x%lx)\n",
+ in1,in4,in2,in3);
+ // note that args are in a different order!!
+ status = ia64_sal_pci_config_write(in1,in4,in2,in3);
+ }
+ else
+ printf("NON-PRIV DOMAIN CALLED SAL_PCI_CONFIG_WRITE\n");
+ break;
+ case SAL_SET_VECTORS:
+ if (in1 == SAL_VECTOR_OS_BOOT_RENDEZ) {
+ if (in4 != 0 || in5 != 0 || in6 != 0 || in7 != 0) {
+ /* Sanity check: cs_length1 must be 0,
+ second vector is reserved. */
+ status = -2;
+ }
+ else {
+ struct domain *d = current->domain;
+ d->arch.boot_rdv_ip = in2;
+ d->arch.boot_rdv_r1 = in3;
+ }
+ }
+ else
+ printf("*** CALLED SAL_SET_VECTORS %lu. IGNORED...\n",
+ in1);
+ break;
+ case SAL_GET_STATE_INFO:
+ /* No more info. */
+ status = -5;
+ r9 = 0;
+ break;
+ case SAL_GET_STATE_INFO_SIZE:
+ /* Return a dummy size. */
+ status = 0;
+ r9 = 128;
+ break;
+ case SAL_CLEAR_STATE_INFO:
+ /* Noop. */
+ break;
+ case SAL_MC_RENDEZ:
+ printf("*** CALLED SAL_MC_RENDEZ. IGNORED...\n");
+ break;
+ case SAL_MC_SET_PARAMS:
+ printf("*** CALLED SAL_MC_SET_PARAMS. IGNORED...\n");
+ break;
+ case SAL_CACHE_FLUSH:
+ if (1) {
+ /* Flush using SAL.
+ This method is faster but has a side effect on
+ other vcpu running on this cpu. */
+ status = ia64_sal_cache_flush (in1);
+ }
+ else {
+ /* Flush with fc all the domain.
+ This method is slower but has no side effects. */
+ domain_cache_flush (current->domain, in1 == 4 ? 1 : 0);
+ status = 0;
+ }
+ break;
+ case SAL_CACHE_INIT:
+ printf("*** CALLED SAL_CACHE_INIT. IGNORED...\n");
+ break;
+ case SAL_UPDATE_PAL:
+ printf("*** CALLED SAL_UPDATE_PAL. IGNORED...\n");
+ break;
+ default:
+ printf("*** CALLED SAL_ WITH UNKNOWN INDEX. IGNORED...\n");
+ status = -1;
+ break;
+ }
+ return ((struct sal_ret_values) {status, r9, r10, r11});
+}
+
+struct ia64_pal_retval
+xen_pal_emulator(unsigned long index, u64 in1, u64 in2, u64 in3)
+{
+ unsigned long r9 = 0;
+ unsigned long r10 = 0;
+ unsigned long r11 = 0;
+ long status = PAL_STATUS_UNIMPLEMENTED;
+
+ if (running_on_sim)
+ return pal_emulator_static(index);
+
+ // pal code must be mapped by a TR when pal is called, however
+ // calls are rare enough that we will map it lazily rather than
+ // at every context switch
+ //efi_map_pal_code();
+ switch (index) {
+ case PAL_MEM_ATTRIB:
+ status = ia64_pal_mem_attrib(&r9);
+ break;
+ case PAL_FREQ_BASE:
+ status = ia64_pal_freq_base(&r9);
+ break;
+ case PAL_PROC_GET_FEATURES:
+ status = ia64_pal_proc_get_features(&r9,&r10,&r11);
+ break;
+ case PAL_BUS_GET_FEATURES:
+ status = ia64_pal_bus_get_features(
+ (pal_bus_features_u_t *) &r9,
+ (pal_bus_features_u_t *) &r10,
+ (pal_bus_features_u_t *) &r11);
+ break;
+ case PAL_FREQ_RATIOS:
+ status = ia64_pal_freq_ratios(
+ (struct pal_freq_ratio *) &r9,
+ (struct pal_freq_ratio *) &r10,
+ (struct pal_freq_ratio *) &r11);
+ break;
+ case PAL_PTCE_INFO:
+ {
+ // return hard-coded xen-specific values because ptc.e
+ // is emulated on xen to always flush everything
+ // these values result in only one ptc.e instruction
+ status = 0; r9 = 0; r10 = (1L << 32) | 1L; r11 = 0;
+ }
+ break;
+ case PAL_VERSION:
+ status = ia64_pal_version(
+ (pal_version_u_t *) &r9,
+ (pal_version_u_t *) &r10);
+ break;
+ case PAL_VM_PAGE_SIZE:
+ status = ia64_pal_vm_page_size(&r9,&r10);
+ break;
+ case PAL_DEBUG_INFO:
+ status = ia64_pal_debug_info(&r9,&r10);
+ break;
+ case PAL_CACHE_SUMMARY:
+ status = ia64_pal_cache_summary(&r9,&r10);
+ break;
+ case PAL_VM_SUMMARY:
+ {
+ /* Use xen-specific values.
+ hash_tag_id is somewhat random! */
+ const pal_vm_info_1_u_t v1 =
+ {.pal_vm_info_1_s =
+ { .vw = 1,
+ .phys_add_size = 44,
+ .key_size = 16,
+ .max_pkr = 15,
+ .hash_tag_id = 0x30,
+ .max_dtr_entry = NDTRS - 1,
+ .max_itr_entry = NITRS - 1,
+#ifdef VHPT_GLOBAL
+ .max_unique_tcs = 3,
+ .num_tc_levels = 2
+#else
+ .max_unique_tcs = 2,
+ .num_tc_levels = 1
+#endif
+ }};
+ const pal_vm_info_2_u_t v2 =
+ { .pal_vm_info_2_s =
+ { .impl_va_msb = 50,
+ .rid_size = current->domain->arch.rid_bits,
+ .reserved = 0 }};
+ r9 = v1.pvi1_val;
+ r10 = v2.pvi2_val;
+ status = PAL_STATUS_SUCCESS;
+ }
+ break;
+ case PAL_VM_INFO:
+#ifdef VHPT_GLOBAL
+ if (in1 == 0 && in2 == 2) {
+ /* Level 1: VHPT */
+ const pal_tc_info_u_t v =
+ { .pal_tc_info_s = {.num_sets = 128,
+ .associativity = 1,
+ .num_entries = 128,
+ .pf = 1,
+ .unified = 1,
+ .reduce_tr = 0,
+ .reserved = 0}};
+ r9 = v.pti_val;
+ /* Only support PAGE_SIZE tc. */
+ r10 = PAGE_SIZE;
+ status = PAL_STATUS_SUCCESS;
+ }
+#endif
+ else if (
+#ifdef VHPT_GLOBAL
+ in1 == 1 /* Level 2. */
+#else
+ in1 == 0 /* Level 1. */
+#endif
+ && (in2 == 1 || in2 == 2))
+ {
+ /* itlb/dtlb, 1 entry. */
+ const pal_tc_info_u_t v =
+ { .pal_tc_info_s = {.num_sets = 1,
+ .associativity = 1,
+ .num_entries = 1,
+ .pf = 1,
+ .unified = 0,
+ .reduce_tr = 0,
+ .reserved = 0}};
+ r9 = v.pti_val;
+ /* Only support PAGE_SIZE tc. */
+ r10 = PAGE_SIZE;
+ status = PAL_STATUS_SUCCESS;
+ }
+ else
+ status = PAL_STATUS_EINVAL;
+ break;
+ case PAL_RSE_INFO:
+ status = ia64_pal_rse_info(
+ &r9,
+ (pal_hints_u_t *) &r10);
+ break;
+ case PAL_REGISTER_INFO:
+ status = ia64_pal_register_info(in1, &r9, &r10);
+ break;
+ case PAL_CACHE_FLUSH:
+ /* FIXME */
+ printk("PAL_CACHE_FLUSH NOT IMPLEMENTED!\n");
+ BUG();
+ break;
+ case PAL_PERF_MON_INFO:
+ {
+ unsigned long pm_buffer[16];
+ status = ia64_pal_perf_mon_info(
+ pm_buffer,
+ (pal_perf_mon_info_u_t *) &r9);
+ if (status != 0) {
+ while(1)
+ printk("PAL_PERF_MON_INFO fails ret=%ld\n",
status);
+ break;
+ }
+ if (copy_to_user((void __user *)in1,pm_buffer,128)) {
+ while(1)
+ printk("xen_pal_emulator: PAL_PERF_MON_INFO "
+ "can't copy to user!!!!\n");
+ status = PAL_STATUS_UNIMPLEMENTED;
+ break;
+ }
+ }
+ break;
+ case PAL_CACHE_INFO:
+ {
+ pal_cache_config_info_t ci;
+ status = ia64_pal_cache_config_info(in1,in2,&ci);
+ if (status != 0) break;
+ r9 = ci.pcci_info_1.pcci1_data;
+ r10 = ci.pcci_info_2.pcci2_data;
+ }
+ break;
+ case PAL_VM_TR_READ: /* FIXME: vcpu_get_tr?? */
+ printk("PAL_VM_TR_READ NOT IMPLEMENTED, IGNORED!\n");
+ break;
+ case PAL_HALT_INFO:
+ {
+ /* 1000 cycles to enter/leave low power state,
+ consumes 10 mW, implemented and cache/TLB coherent. */
+ unsigned long res = 1000UL | (1000UL << 16) | (10UL << 32)
+ | (1UL << 61) | (1UL << 60);
+ if (copy_to_user ((void *)in1, &res, sizeof (res)))
+ status = PAL_STATUS_EINVAL;
+ else
+ status = PAL_STATUS_SUCCESS;
+ }
+ break;
+ case PAL_HALT:
+ if (current->domain == dom0) {
+ printf ("Domain0 halts the machine\n");
+ (*efi.reset_system)(EFI_RESET_SHUTDOWN,0,0,NULL);
+ }
+ else
+ domain_shutdown (current->domain,
+ SHUTDOWN_poweroff);
+ break;
+ default:
+ printk("xen_pal_emulator: UNIMPLEMENTED PAL CALL %lu!!!!\n",
+ index);
+ break;
+ }
+ return ((struct ia64_pal_retval) {status, r9, r10, r11});
+}
+
+void
+do_ssc(unsigned long ssc, struct pt_regs *regs)
+{
+ unsigned long arg0, arg1, arg2, arg3, retval;
+ char buf[2];
+/**/ static int last_fd, last_count; // FIXME FIXME FIXME
+/**/ // BROKEN FOR MULTIPLE DOMAINS & SMP
+/**/ struct ssc_disk_stat { int fd; unsigned count;} *stat, last_stat;
+
+ arg0 = vcpu_get_gr(current,32);
+ switch(ssc) {
+ case SSC_PUTCHAR:
+ buf[0] = arg0;
+ buf[1] = '\0';
+ printf(buf);
+ break;
+ case SSC_GETCHAR:
+ retval = ia64_ssc(0,0,0,0,ssc);
+ vcpu_set_gr(current,8,retval,0);
+ break;
+ case SSC_WAIT_COMPLETION:
+ if (arg0) { // metaphysical address
+
+ arg0 = translate_domain_mpaddr(arg0);
+/**/ stat = (struct ssc_disk_stat *)__va(arg0);
+///**/ if (stat->fd == last_fd) stat->count = last_count;
+/**/ stat->count = last_count;
+//if (last_count >= PAGE_SIZE) printf("ssc_wait:
stat->fd=%d,last_fd=%d,last_count=%d\n",stat->fd,last_fd,last_count);
+///**/ retval = ia64_ssc(arg0,0,0,0,ssc);
+/**/ retval = 0;
+ }
+ else retval = -1L;
+ vcpu_set_gr(current,8,retval,0);
+ break;
+ case SSC_OPEN:
+ arg1 = vcpu_get_gr(current,33); // access rights
+if (!running_on_sim) { printf("SSC_OPEN, not implemented on hardware.
(ignoring...)\n"); arg0 = 0; }
+ if (arg0) { // metaphysical address
+ arg0 = translate_domain_mpaddr(arg0);
+ retval = ia64_ssc(arg0,arg1,0,0,ssc);
+ }
+ else retval = -1L;
+ vcpu_set_gr(current,8,retval,0);
+ break;
+ case SSC_WRITE:
+ case SSC_READ:
+//if (ssc == SSC_WRITE) printf("DOING AN SSC_WRITE\n");
+ arg1 = vcpu_get_gr(current,33);
+ arg2 = vcpu_get_gr(current,34);
+ arg3 = vcpu_get_gr(current,35);
+ if (arg2) { // metaphysical address of descriptor
+ struct ssc_disk_req *req;
+ unsigned long mpaddr;
+ long len;
+
+ arg2 = translate_domain_mpaddr(arg2);
+ req = (struct ssc_disk_req *) __va(arg2);
+ req->len &= 0xffffffffL; // avoid strange bug
+ len = req->len;
+/**/ last_fd = arg1;
+/**/ last_count = len;
+ mpaddr = req->addr;
+//if (last_count >= PAGE_SIZE) printf("do_ssc: read fd=%d, addr=%p, len=%lx
",last_fd,mpaddr,len);
+ retval = 0;
+ if ((mpaddr & PAGE_MASK) != ((mpaddr+len-1) &
PAGE_MASK)) {
+ // do partial page first
+ req->addr = translate_domain_mpaddr(mpaddr);
+ req->len = PAGE_SIZE - (req->addr & ~PAGE_MASK);
+ len -= req->len; mpaddr += req->len;
+ retval = ia64_ssc(arg0,arg1,arg2,arg3,ssc);
+ arg3 += req->len; // file offset
+/**/ last_stat.fd = last_fd;
+/**/
(void)ia64_ssc(__pa(&last_stat),0,0,0,SSC_WAIT_COMPLETION);
+//if (last_count >= PAGE_SIZE) printf("ssc(%p,%lx)[part]=%x
",req->addr,req->len,retval);
+ }
+ if (retval >= 0) while (len > 0) {
+ req->addr = translate_domain_mpaddr(mpaddr);
+ req->len = (len > PAGE_SIZE) ? PAGE_SIZE : len;
+ len -= PAGE_SIZE; mpaddr += PAGE_SIZE;
+ retval = ia64_ssc(arg0,arg1,arg2,arg3,ssc);
+ arg3 += req->len; // file offset
+// TEMP REMOVED AGAIN arg3 += req->len; // file offset
+/**/ last_stat.fd = last_fd;
+/**/
(void)ia64_ssc(__pa(&last_stat),0,0,0,SSC_WAIT_COMPLETION);
+//if (last_count >= PAGE_SIZE) printf("ssc(%p,%lx)=%x
",req->addr,req->len,retval);
+ }
+ // set it back to the original value
+ req->len = last_count;
+ }
+ else retval = -1L;
+ vcpu_set_gr(current,8,retval,0);
+//if (last_count >= PAGE_SIZE) printf("retval=%x\n",retval);
+ break;
+ case SSC_CONNECT_INTERRUPT:
+ arg1 = vcpu_get_gr(current,33);
+ arg2 = vcpu_get_gr(current,34);
+ arg3 = vcpu_get_gr(current,35);
+ if (!running_on_sim) { printf("SSC_CONNECT_INTERRUPT, not
implemented on hardware. (ignoring...)\n"); break; }
+ (void)ia64_ssc(arg0,arg1,arg2,arg3,ssc);
+ break;
+ case SSC_NETDEV_PROBE:
+ vcpu_set_gr(current,8,-1L,0);
+ break;
+ default:
+ printf("ia64_handle_break: bad ssc code %lx, iip=0x%lx,
b0=0x%lx... spinning\n",
+ ssc, regs->cr_iip, regs->b0);
+ while(1);
+ break;
+ }
+ vcpu_increment_iip(current);
+}
diff -r 279628dc2d6f -r f662f98d594b xen/arch/ia64/xen/process.c
--- a/xen/arch/ia64/xen/process.c Mon Jun 05 14:23:57 2006 -0600
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,949 +0,0 @@
-
-/*
- * Miscellaneous process/domain related routines
- *
- * Copyright (C) 2004 Hewlett-Packard Co.
- * Dan Magenheimer (dan.magenheimer@xxxxxx)
- *
- */
-
-#include <xen/config.h>
-#include <xen/lib.h>
-#include <xen/errno.h>
-#include <xen/sched.h>
-#include <xen/smp.h>
-#include <asm/ptrace.h>
-#include <xen/delay.h>
-
-#include <asm/sal.h> /* FOR struct ia64_sal_retval */
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/desc.h>
-//#include <asm/ldt.h>
-#include <xen/irq.h>
-#include <xen/event.h>
-#include <asm/regionreg.h>
-#include <asm/privop.h>
-#include <asm/vcpu.h>
-#include <asm/ia64_int.h>
-#include <asm/dom_fw.h>
-#include <asm/vhpt.h>
-#include "hpsim_ssc.h"
-#include <xen/multicall.h>
-#include <asm/debugger.h>
-#include <asm/fpswa.h>
-
-extern void die_if_kernel(char *str, struct pt_regs *regs, long err);
-/* FIXME: where these declarations shold be there ? */
-extern void panic_domain(struct pt_regs *, const char *, ...);
-extern long platform_is_hp_ski(void);
-extern int ia64_hyperprivop(unsigned long, REGS *);
-extern IA64FAULT ia64_hypercall(struct pt_regs *regs);
-extern void vmx_do_launch(struct vcpu *);
-extern unsigned long lookup_domain_mpa(struct domain *,unsigned long);
-
-#define IA64_PSR_CPL1 (__IA64_UL(1) << IA64_PSR_CPL1_BIT)
-// note IA64_PSR_PK removed from following, why is this necessary?
-#define DELIVER_PSR_SET (IA64_PSR_IC | IA64_PSR_I | \
- IA64_PSR_DT | IA64_PSR_RT | IA64_PSR_CPL1 | \
- IA64_PSR_IT | IA64_PSR_BN)
-
-#define DELIVER_PSR_CLR (IA64_PSR_AC | IA64_PSR_DFL | IA64_PSR_DFH | \
- IA64_PSR_SP | IA64_PSR_DI | IA64_PSR_SI | \
- IA64_PSR_DB | IA64_PSR_LP | IA64_PSR_TB | \
- IA64_PSR_CPL | IA64_PSR_MC | IA64_PSR_IS | \
- IA64_PSR_ID | IA64_PSR_DA | IA64_PSR_DD | \
- IA64_PSR_SS | IA64_PSR_RI | IA64_PSR_ED | IA64_PSR_IA)
-
-#include <xen/sched-if.h>
-
-void schedule_tail(struct vcpu *prev)
-{
- extern char ia64_ivt;
- context_saved(prev);
-
- if (VMX_DOMAIN(current)) {
- vmx_do_launch(current);
- } else {
- ia64_set_iva(&ia64_ivt);
- ia64_set_pta(VHPT_ADDR | (1 << 8) | (VHPT_SIZE_LOG2 << 2) |
- VHPT_ENABLED);
- load_region_regs(current);
- vcpu_load_kernel_regs(current);
- }
-}
-
-void tdpfoo(void) { }
-
-// given a domain virtual address, pte and pagesize, extract the metaphysical
-// address, convert the pte for a physical address for (possibly different)
-// Xen PAGE_SIZE and return modified pte. (NOTE: TLB insert should use
-// PAGE_SIZE!)
-u64 translate_domain_pte(u64 pteval, u64 address, u64 itir__, u64* logps)
-{
- struct domain *d = current->domain;
- ia64_itir_t itir = {.itir = itir__};
- u64 mask, mpaddr, pteval2;
- u64 arflags;
- u64 arflags2;
-
- pteval &= ((1UL << 53) - 1);// ignore [63:53] bits
-
- // FIXME address had better be pre-validated on insert
- mask = ~itir_mask(itir.itir);
- mpaddr = (((pteval & ~_PAGE_ED) & _PAGE_PPN_MASK) & ~mask) |
- (address & mask);
-#ifdef CONFIG_XEN_IA64_DOM0_VP
- if (itir.ps > PAGE_SHIFT) {
- itir.ps = PAGE_SHIFT;
- }
-#endif
- *logps = itir.ps;
-#ifndef CONFIG_XEN_IA64_DOM0_VP
- if (d == dom0) {
- if (mpaddr < dom0_start || mpaddr >= dom0_start + dom0_size) {
- /*
- printk("translate_domain_pte: out-of-bounds dom0 mpaddr
0x%lx! itc=%lx...\n",
- mpaddr, ia64_get_itc());
- */
- tdpfoo();
- }
- }
- else if ((mpaddr >> PAGE_SHIFT) > d->max_pages) {
- /* Address beyond the limit. However the grant table is
- also beyond the limit. Display a message if not in the
- grant table. */
- if (mpaddr >= IA64_GRANT_TABLE_PADDR
- && mpaddr < (IA64_GRANT_TABLE_PADDR
- + (ORDER_GRANT_FRAMES << PAGE_SHIFT)))
- printf("translate_domain_pte: bad mpa=0x%lx (> 0x%lx),"
- "vadr=0x%lx,pteval=0x%lx,itir=0x%lx\n",
- mpaddr, (unsigned long)d->max_pages<<PAGE_SHIFT,
- address, pteval, itir.itir);
- tdpfoo();
- }
-#endif
- pteval2 = lookup_domain_mpa(d,mpaddr);
- arflags = pteval & _PAGE_AR_MASK;
- arflags2 = pteval2 & _PAGE_AR_MASK;
- if (arflags != _PAGE_AR_R && arflags2 == _PAGE_AR_R) {
-#if 0
- DPRINTK("%s:%d "
- "pteval 0x%lx arflag 0x%lx address 0x%lx itir 0x%lx "
- "pteval2 0x%lx arflags2 0x%lx mpaddr 0x%lx\n",
- __func__, __LINE__,
- pteval, arflags, address, itir__,
- pteval2, arflags2, mpaddr);
-#endif
- pteval = (pteval & ~_PAGE_AR_MASK) | _PAGE_AR_R;
-}
-
- pteval2 &= _PAGE_PPN_MASK; // ignore non-addr bits
- pteval2 |= (pteval & _PAGE_ED);
- pteval2 |= _PAGE_PL_2; // force PL0->2 (PL3 is unaffected)
- pteval2 = (pteval & ~_PAGE_PPN_MASK) | pteval2;
- return pteval2;
-}
-
-// given a current domain metaphysical address, return the physical address
-unsigned long translate_domain_mpaddr(unsigned long mpaddr)
-{
- unsigned long pteval;
-
-#ifndef CONFIG_XEN_IA64_DOM0_VP
- if (current->domain == dom0) {
- if (mpaddr < dom0_start || mpaddr >= dom0_start + dom0_size) {
- printk("translate_domain_mpaddr: out-of-bounds dom0
mpaddr 0x%lx! continuing...\n",
- mpaddr);
- tdpfoo();
- }
- }
-#endif
- pteval = lookup_domain_mpa(current->domain,mpaddr);
- return ((pteval & _PAGE_PPN_MASK) | (mpaddr & ~PAGE_MASK));
-}
-
-unsigned long slow_reflect_count[0x80] = { 0 };
-unsigned long fast_reflect_count[0x80] = { 0 };
-
-#define inc_slow_reflect_count(vec) slow_reflect_count[vec>>8]++;
-
-void zero_reflect_counts(void)
-{
- int i;
- for (i=0; i<0x80; i++) slow_reflect_count[i] = 0;
- for (i=0; i<0x80; i++) fast_reflect_count[i] = 0;
-}
-
-int dump_reflect_counts(char *buf)
-{
- int i,j,cnt;
- char *s = buf;
-
- s += sprintf(s,"Slow reflections by vector:\n");
- for (i = 0, j = 0; i < 0x80; i++) {
- if ( (cnt = slow_reflect_count[i]) != 0 ) {
- s += sprintf(s,"0x%02x00:%10d, ",i,cnt);
- if ((j++ & 3) == 3) s += sprintf(s,"\n");
- }
- }
- if (j & 3) s += sprintf(s,"\n");
- s += sprintf(s,"Fast reflections by vector:\n");
- for (i = 0, j = 0; i < 0x80; i++) {
- if ( (cnt = fast_reflect_count[i]) != 0 ) {
- s += sprintf(s,"0x%02x00:%10d, ",i,cnt);
- if ((j++ & 3) == 3) s += sprintf(s,"\n");
- }
- }
- if (j & 3) s += sprintf(s,"\n");
- return s - buf;
-}
-
-// should never panic domain... if it does, stack may have been overrun
-void check_bad_nested_interruption(unsigned long isr, struct pt_regs *regs,
unsigned long vector)
-{
- struct vcpu *v = current;
-
- if (!(PSCB(v,ipsr) & IA64_PSR_DT)) {
- panic_domain(regs,"psr.dt off, trying to deliver nested
dtlb!\n");
- }
- vector &= ~0xf;
- if (vector != IA64_DATA_TLB_VECTOR &&
- vector != IA64_ALT_DATA_TLB_VECTOR &&
- vector != IA64_VHPT_TRANS_VECTOR) {
- panic_domain(regs,"psr.ic off, delivering
fault=%lx,ipsr=%lx,iip=%lx,ifa=%lx,isr=%lx,PSCB.iip=%lx\n",
-
vector,regs->cr_ipsr,regs->cr_iip,PSCB(v,ifa),isr,PSCB(v,iip));
- }
-}
-
-void reflect_interruption(unsigned long isr, struct pt_regs *regs, unsigned
long vector)
-{
- struct vcpu *v = current;
-
- if (!PSCB(v,interrupt_collection_enabled))
- check_bad_nested_interruption(isr,regs,vector);
- PSCB(v,unat) = regs->ar_unat; // not sure if this is really needed?
- PSCB(v,precover_ifs) = regs->cr_ifs;
- vcpu_bsw0(v);
- PSCB(v,ipsr) = vcpu_get_ipsr_int_state(v,regs->cr_ipsr);
- PSCB(v,isr) = isr;
- PSCB(v,iip) = regs->cr_iip;
- PSCB(v,ifs) = 0;
- PSCB(v,incomplete_regframe) = 0;
-
- regs->cr_iip = ((unsigned long) PSCBX(v,iva) + vector) & ~0xffUL;
- regs->cr_ipsr = (regs->cr_ipsr & ~DELIVER_PSR_CLR) | DELIVER_PSR_SET;
- regs->r31 = XSI_IPSR;
-
- v->vcpu_info->evtchn_upcall_mask = 1;
- PSCB(v,interrupt_collection_enabled) = 0;
-
- inc_slow_reflect_count(vector);
-}
-
-void foodpi(void) {}
-
-static unsigned long pending_false_positive = 0;
-
-void reflect_extint(struct pt_regs *regs)
-{
- unsigned long isr = regs->cr_ipsr & IA64_PSR_RI;
- struct vcpu *v = current;
- static int first_extint = 1;
-
- if (first_extint) {
- printf("Delivering first extint to domain: isr=0x%lx,
iip=0x%lx\n", isr, regs->cr_iip);
- first_extint = 0;
- }
- if (vcpu_timer_pending_early(v))
-printf("*#*#*#* about to deliver early timer to domain
%d!!!\n",v->domain->domain_id);
- PSCB(current,itir) = 0;
- reflect_interruption(isr,regs,IA64_EXTINT_VECTOR);
-}
-
-void reflect_event(struct pt_regs *regs)
-{
- unsigned long isr = regs->cr_ipsr & IA64_PSR_RI;
- struct vcpu *v = current;
-
- /* Sanity check */
- if (is_idle_vcpu(v) || !user_mode(regs)) {
- //printk("WARN: invocation to reflect_event in nested xen\n");
- return;
- }
-
- if (!event_pending(v))
- return;
-
- if (!PSCB(v,interrupt_collection_enabled))
- printf("psr.ic off, delivering event,
ipsr=%lx,iip=%lx,isr=%lx,viip=0x%lx\n",
- regs->cr_ipsr, regs->cr_iip, isr, PSCB(v, iip));
- PSCB(v,unat) = regs->ar_unat; // not sure if this is really needed?
- PSCB(v,precover_ifs) = regs->cr_ifs;
- vcpu_bsw0(v);
- PSCB(v,ipsr) = vcpu_get_ipsr_int_state(v,regs->cr_ipsr);
- PSCB(v,isr) = isr;
- PSCB(v,iip) = regs->cr_iip;
- PSCB(v,ifs) = 0;
- PSCB(v,incomplete_regframe) = 0;
-
- regs->cr_iip = v->arch.event_callback_ip;
- regs->cr_ipsr = (regs->cr_ipsr & ~DELIVER_PSR_CLR) | DELIVER_PSR_SET;
- regs->r31 = XSI_IPSR;
-
- v->vcpu_info->evtchn_upcall_mask = 1;
- PSCB(v,interrupt_collection_enabled) = 0;
-}
-
-// ONLY gets called from ia64_leave_kernel
-// ONLY call with interrupts disabled?? (else might miss one?)
-// NEVER successful if already reflecting a trap/fault because psr.i==0
-void deliver_pending_interrupt(struct pt_regs *regs)
-{
- struct domain *d = current->domain;
- struct vcpu *v = current;
- // FIXME: Will this work properly if doing an RFI???
- if (!is_idle_domain(d) && user_mode(regs)) {
- if (vcpu_deliverable_interrupts(v))
- reflect_extint(regs);
- else if (PSCB(v,pending_interruption))
- ++pending_false_positive;
- }
-}
-unsigned long lazy_cover_count = 0;
-
-static int
-handle_lazy_cover(struct vcpu *v, struct pt_regs *regs)
-{
- if (!PSCB(v,interrupt_collection_enabled)) {
- PSCB(v,ifs) = regs->cr_ifs;
- PSCB(v,incomplete_regframe) = 1;
- regs->cr_ifs = 0;
- lazy_cover_count++;
- return(1); // retry same instruction with cr.ifs off
- }
- return(0);
-}
-
-void ia64_do_page_fault (unsigned long address, unsigned long isr, struct
pt_regs *regs, unsigned long itir)
-{
- unsigned long iip = regs->cr_iip, iha;
- // FIXME should validate address here
- unsigned long pteval;
- unsigned long is_data = !((isr >> IA64_ISR_X_BIT) & 1UL);
- IA64FAULT fault;
-
- if ((isr & IA64_ISR_IR) && handle_lazy_cover(current, regs)) return;
- if ((isr & IA64_ISR_SP)
- || ((isr & IA64_ISR_NA) && (isr & IA64_ISR_CODE_MASK) ==
IA64_ISR_CODE_LFETCH))
- {
- /*
- * This fault was due to a speculative load or lfetch.fault,
set the "ed"
- * bit in the psr to ensure forward progress. (Target register
will get a
- * NaT for ld.s, lfetch will be canceled.)
- */
- ia64_psr(regs)->ed = 1;
- return;
- }
-
- again:
- fault = vcpu_translate(current,address,is_data,&pteval,&itir,&iha);
- if (fault == IA64_NO_FAULT || fault == IA64_USE_TLB) {
- u64 logps;
- pteval = translate_domain_pte(pteval, address, itir, &logps);
- vcpu_itc_no_srlz(current,is_data?2:1,address,pteval,-1UL,logps);
- if (fault == IA64_USE_TLB && !current->arch.dtlb.pte.p) {
- /* dtlb has been purged in-between. This dtlb was
- matching. Undo the work. */
- vcpu_flush_tlb_vhpt_range (address, 1);
- goto again;
- }
- return;
- }
-
- if (!user_mode (regs)) {
- /* The fault occurs inside Xen. */
- if (!ia64_done_with_exception(regs)) {
- // should never happen. If it does, region 0 addr may
- // indicate a bad xen pointer
- printk("*** xen_handle_domain_access: exception table"
- " lookup failed, iip=0x%lx, addr=0x%lx,
spinning...\n",
- iip, address);
- panic_domain(regs,"*** xen_handle_domain_access:
exception table"
- " lookup failed, iip=0x%lx, addr=0x%lx,
spinning...\n",
- iip, address);
- }
- return;
- }
- if (!PSCB(current,interrupt_collection_enabled)) {
- check_bad_nested_interruption(isr,regs,fault);
- //printf("Delivering NESTED DATA TLB fault\n");
- fault = IA64_DATA_NESTED_TLB_VECTOR;
- regs->cr_iip = ((unsigned long) PSCBX(current,iva) + fault) &
~0xffUL;
- regs->cr_ipsr = (regs->cr_ipsr & ~DELIVER_PSR_CLR) |
DELIVER_PSR_SET;
- // NOTE: nested trap must NOT pass PSCB address
- //regs->r31 = (unsigned long) &PSCB(current);
- inc_slow_reflect_count(fault);
- return;
- }
-
- PSCB(current,itir) = itir;
- PSCB(current,iha) = iha;
- PSCB(current,ifa) = address;
- reflect_interruption(isr, regs, fault);
-}
-
-fpswa_interface_t *fpswa_interface = 0;
-
-void trap_init (void)
-{
- if (ia64_boot_param->fpswa)
- /* FPSWA fixup: make the interface pointer a virtual address: */
- fpswa_interface = __va(ia64_boot_param->fpswa);
- else
- printk("No FPSWA supported.\n");
-}
-
-static fpswa_ret_t
-fp_emulate (int fp_fault, void *bundle, unsigned long *ipsr,
- unsigned long *fpsr, unsigned long *isr, unsigned long *pr,
- unsigned long *ifs, struct pt_regs *regs)
-{
- fp_state_t fp_state;
- fpswa_ret_t ret;
-
- if (!fpswa_interface)
- return ((fpswa_ret_t) {-1, 0, 0, 0});
-
- memset(&fp_state, 0, sizeof(fp_state_t));
-
- /*
- * compute fp_state. only FP registers f6 - f11 are used by the
- * kernel, so set those bits in the mask and set the low volatile
- * pointer to point to these registers.
- */
- fp_state.bitmask_low64 = 0xfc0; /* bit6..bit11 */
-
- fp_state.fp_state_low_volatile = (fp_state_low_volatile_t *) ®s->f6;
- /*
- * unsigned long (*EFI_FPSWA) (
- * unsigned long trap_type,
- * void *Bundle,
- * unsigned long *pipsr,
- * unsigned long *pfsr,
- * unsigned long *pisr,
- * unsigned long *ppreds,
- * unsigned long *pifs,
- * void *fp_state);
- */
- ret = (*fpswa_interface->fpswa)(fp_fault, bundle,
- ipsr, fpsr, isr, pr, ifs, &fp_state);
-
- return ret;
-}
-
-/*
- * Handle floating-point assist faults and traps for domain.
- */
-unsigned long
-handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr)
-{
- struct vcpu *v = current;
- IA64_BUNDLE bundle;
- IA64_BUNDLE __get_domain_bundle(UINT64);
- unsigned long fault_ip;
- fpswa_ret_t ret;
-
- fault_ip = regs->cr_iip;
- /*
- * When the FP trap occurs, the trapping instruction is completed.
- * If ipsr.ri == 0, there is the trapping instruction in previous
bundle.
- */
- if (!fp_fault && (ia64_psr(regs)->ri == 0))
- fault_ip -= 16;
- bundle = __get_domain_bundle(fault_ip);
- if (!bundle.i64[0] && !bundle.i64[1]) {
- printk("%s: floating-point bundle at 0x%lx not mapped\n",
- __FUNCTION__, fault_ip);
- return -1;
- }
-
- ret = fp_emulate(fp_fault, &bundle, ®s->cr_ipsr, ®s->ar_fpsr,
- &isr, ®s->pr, ®s->cr_ifs, regs);
-
- if (ret.status) {
- PSCBX(v, fpswa_ret) = ret;
- printk("%s(%s): fp_emulate() returned %ld\n",
- __FUNCTION__, fp_fault?"fault":"trap", ret.status);
- }
-
- return ret.status;
-}
-
-void
-ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
- unsigned long iim, unsigned long itir, unsigned long arg5,
- unsigned long arg6, unsigned long arg7, unsigned long stack)
-{
- struct pt_regs *regs = (struct pt_regs *) &stack;
- unsigned long code;
- static const char *reason[] = {
- "IA-64 Illegal Operation fault",
- "IA-64 Privileged Operation fault",
- "IA-64 Privileged Register fault",
- "IA-64 Reserved Register/Field fault",
- "Disabled Instruction Set Transition fault",
- "Unknown fault 5", "Unknown fault 6", "Unknown fault 7",
"Illegal Hazard fault",
- "Unknown fault 9", "Unknown fault 10", "Unknown fault 11",
"Unknown fault 12",
- "Unknown fault 13", "Unknown fault 14", "Unknown fault 15"
- };
-
- printf("ia64_fault, vector=0x%lx, ifa=0x%016lx, iip=0x%016lx,
ipsr=0x%016lx, isr=0x%016lx\n",
- vector, ifa, regs->cr_iip, regs->cr_ipsr, isr);
-
-
- if ((isr & IA64_ISR_NA) && ((isr & IA64_ISR_CODE_MASK) ==
IA64_ISR_CODE_LFETCH)) {
- /*
- * This fault was due to lfetch.fault, set "ed" bit in the psr
to cancel
- * the lfetch.
- */
- ia64_psr(regs)->ed = 1;
- printf("ia64_fault: handled lfetch.fault\n");
- return;
- }
-
- switch (vector) {
- case 0:
- printk("VHPT Translation.\n");
- break;
-
- case 4:
- printk("Alt DTLB.\n");
- break;
-
- case 6:
- printk("Instruction Key Miss.\n");
- break;
-
- case 7:
- printk("Data Key Miss.\n");
- break;
-
- case 8:
- printk("Dirty-bit.\n");
- break;
-
- case 20:
- printk("Page Not Found.\n");
- break;
-
- case 21:
- printk("Key Permission.\n");
- break;
-
- case 22:
- printk("Instruction Access Rights.\n");
- break;
-
- case 24: /* General Exception */
- code = (isr >> 4) & 0xf;
- printk("General Exception: %s%s.\n", reason[code],
- (code == 3) ? ((isr & (1UL << 37)) ? " (RSE access)" :
- " (data access)") : "");
- if (code == 8) {
-# ifdef CONFIG_IA64_PRINT_HAZARDS
- printk("%s[%d]: possible hazard @ ip=%016lx (pr =
%016lx)\n",
- current->comm, current->pid,
- regs->cr_iip + ia64_psr(regs)->ri,
- regs->pr);
-# endif
- printf("ia64_fault: returning on hazard\n");
- return;
- }
- break;
-
- case 25:
- printk("Disabled FP-Register.\n");
- break;
-
- case 26:
- printk("NaT consumption.\n");
- break;
-
- case 29:
- printk("Debug.\n");
- break;
-
- case 30:
- printk("Unaligned Reference.\n");
- break;
-
- case 31:
- printk("Unsupported data reference.\n");
- break;
-
- case 32:
- printk("Floating-Point Fault.\n");
- break;
-
- case 33:
- printk("Floating-Point Trap.\n");
- break;
-
- case 34:
- printk("Lower Privilege Transfer Trap.\n");
- break;
-
- case 35:
- printk("Taken Branch Trap.\n");
- break;
-
- case 36:
- printk("Single Step Trap.\n");
- break;
-
- case 45:
- printk("IA-32 Exception.\n");
- break;
-
- case 46:
- printk("IA-32 Intercept.\n");
- break;
-
- case 47:
- printk("IA-32 Interrupt.\n");
- break;
-
- default:
- printk("Fault %lu\n", vector);
- break;
- }
-
- show_registers(regs);
- panic("Fault in Xen.\n");
-}
-
-unsigned long running_on_sim = 0;
-
-void
-do_ssc(unsigned long ssc, struct pt_regs *regs)
-{
- unsigned long arg0, arg1, arg2, arg3, retval;
- char buf[2];
-/**/ static int last_fd, last_count; // FIXME FIXME FIXME
-/**/ // BROKEN FOR MULTIPLE DOMAINS & SMP
-/**/ struct ssc_disk_stat { int fd; unsigned count;} *stat, last_stat;
-
- arg0 = vcpu_get_gr(current,32);
- switch(ssc) {
- case SSC_PUTCHAR:
- buf[0] = arg0;
- buf[1] = '\0';
- printf(buf);
- break;
- case SSC_GETCHAR:
- retval = ia64_ssc(0,0,0,0,ssc);
- vcpu_set_gr(current,8,retval,0);
- break;
- case SSC_WAIT_COMPLETION:
- if (arg0) { // metaphysical address
-
- arg0 = translate_domain_mpaddr(arg0);
-/**/ stat = (struct ssc_disk_stat *)__va(arg0);
-///**/ if (stat->fd == last_fd) stat->count = last_count;
-/**/ stat->count = last_count;
-//if (last_count >= PAGE_SIZE) printf("ssc_wait:
stat->fd=%d,last_fd=%d,last_count=%d\n",stat->fd,last_fd,last_count);
-///**/ retval = ia64_ssc(arg0,0,0,0,ssc);
-/**/ retval = 0;
- }
- else retval = -1L;
- vcpu_set_gr(current,8,retval,0);
- break;
- case SSC_OPEN:
- arg1 = vcpu_get_gr(current,33); // access rights
-if (!running_on_sim) { printf("SSC_OPEN, not implemented on hardware.
(ignoring...)\n"); arg0 = 0; }
- if (arg0) { // metaphysical address
- arg0 = translate_domain_mpaddr(arg0);
- retval = ia64_ssc(arg0,arg1,0,0,ssc);
- }
- else retval = -1L;
- vcpu_set_gr(current,8,retval,0);
- break;
- case SSC_WRITE:
- case SSC_READ:
-//if (ssc == SSC_WRITE) printf("DOING AN SSC_WRITE\n");
- arg1 = vcpu_get_gr(current,33);
- arg2 = vcpu_get_gr(current,34);
- arg3 = vcpu_get_gr(current,35);
- if (arg2) { // metaphysical address of descriptor
- struct ssc_disk_req *req;
- unsigned long mpaddr;
- long len;
-
- arg2 = translate_domain_mpaddr(arg2);
- req = (struct ssc_disk_req *) __va(arg2);
- req->len &= 0xffffffffL; // avoid strange bug
- len = req->len;
-/**/ last_fd = arg1;
-/**/ last_count = len;
- mpaddr = req->addr;
-//if (last_count >= PAGE_SIZE) printf("do_ssc: read fd=%d, addr=%p, len=%lx
",last_fd,mpaddr,len);
- retval = 0;
- if ((mpaddr & PAGE_MASK) != ((mpaddr+len-1) &
PAGE_MASK)) {
- // do partial page first
- req->addr = translate_domain_mpaddr(mpaddr);
- req->len = PAGE_SIZE - (req->addr & ~PAGE_MASK);
- len -= req->len; mpaddr += req->len;
- retval = ia64_ssc(arg0,arg1,arg2,arg3,ssc);
- arg3 += req->len; // file offset
-/**/ last_stat.fd = last_fd;
-/**/
(void)ia64_ssc(__pa(&last_stat),0,0,0,SSC_WAIT_COMPLETION);
-//if (last_count >= PAGE_SIZE) printf("ssc(%p,%lx)[part]=%x
",req->addr,req->len,retval);
- }
- if (retval >= 0) while (len > 0) {
- req->addr = translate_domain_mpaddr(mpaddr);
- req->len = (len > PAGE_SIZE) ? PAGE_SIZE : len;
- len -= PAGE_SIZE; mpaddr += PAGE_SIZE;
- retval = ia64_ssc(arg0,arg1,arg2,arg3,ssc);
- arg3 += req->len; // file offset
-// TEMP REMOVED AGAIN arg3 += req->len; // file offset
-/**/ last_stat.fd = last_fd;
-/**/
(void)ia64_ssc(__pa(&last_stat),0,0,0,SSC_WAIT_COMPLETION);
-//if (last_count >= PAGE_SIZE) printf("ssc(%p,%lx)=%x
",req->addr,req->len,retval);
- }
- // set it back to the original value
- req->len = last_count;
- }
- else retval = -1L;
- vcpu_set_gr(current,8,retval,0);
-//if (last_count >= PAGE_SIZE) printf("retval=%x\n",retval);
- break;
- case SSC_CONNECT_INTERRUPT:
- arg1 = vcpu_get_gr(current,33);
- arg2 = vcpu_get_gr(current,34);
- arg3 = vcpu_get_gr(current,35);
- if (!running_on_sim) { printf("SSC_CONNECT_INTERRUPT, not
implemented on hardware. (ignoring...)\n"); break; }
- (void)ia64_ssc(arg0,arg1,arg2,arg3,ssc);
- break;
- case SSC_NETDEV_PROBE:
- vcpu_set_gr(current,8,-1L,0);
- break;
- default:
- printf("ia64_handle_break: bad ssc code %lx, iip=0x%lx,
b0=0x%lx... spinning\n",
- ssc, regs->cr_iip, regs->b0);
- while(1);
- break;
- }
- vcpu_increment_iip(current);
-}
-
-/* Also read in hyperprivop.S */
-int first_break = 1;
-
-void
-ia64_handle_break (unsigned long ifa, struct pt_regs *regs, unsigned long isr,
unsigned long iim)
-{
- struct domain *d = current->domain;
- struct vcpu *v = current;
- IA64FAULT vector;
-
- if (first_break) {
- if (platform_is_hp_ski()) running_on_sim = 1;
- else running_on_sim = 0;
- first_break = 0;
- }
- if (iim == 0x80001 || iim == 0x80002) { //FIXME: don't hardcode constant
- do_ssc(vcpu_get_gr(current,36), regs);
- }
-#ifdef CRASH_DEBUG
- else if ((iim == 0 || iim == CDB_BREAK_NUM) && !user_mode(regs)) {
- if (iim == 0)
- show_registers(regs);
- debugger_trap_fatal(0 /* don't care */, regs);
- }
-#endif
- else if (iim == d->arch.breakimm) {
- /* by default, do not continue */
- v->arch.hypercall_continuation = 0;
-
- if ((vector = ia64_hypercall(regs)) == IA64_NO_FAULT) {
- if (!PSCBX(v, hypercall_continuation))
- vcpu_increment_iip(current);
- }
- else reflect_interruption(isr, regs, vector);
- }
- else if (!PSCB(v,interrupt_collection_enabled)) {
- if (ia64_hyperprivop(iim,regs))
- vcpu_increment_iip(current);
- }
- else {
- if (iim == 0)
- die_if_kernel("bug check", regs, iim);
- PSCB(v,iim) = iim;
- reflect_interruption(isr,regs,IA64_BREAK_VECTOR);
- }
-}
-
-void
-ia64_handle_privop (unsigned long ifa, struct pt_regs *regs, unsigned long
isr, unsigned long itir)
-{
- IA64FAULT vector;
-
- vector = priv_emulate(current,regs,isr);
- if (vector != IA64_NO_FAULT && vector != IA64_RFI_IN_PROGRESS) {
- // Note: if a path results in a vector to reflect that requires
- // iha/itir (e.g. vcpu_force_data_miss), they must be set there
- reflect_interruption(isr,regs,vector);
- }
-}
-
-/* Used in vhpt.h. */
-#define INTR_TYPE_MAX 10
-UINT64 int_counts[INTR_TYPE_MAX];
-
-void
-ia64_handle_reflection (unsigned long ifa, struct pt_regs *regs, unsigned long
isr, unsigned long iim, unsigned long vector)
-{
- struct vcpu *v = current;
- unsigned long check_lazy_cover = 0;
- unsigned long psr = regs->cr_ipsr;
-
- /* Following faults shouldn'g be seen from Xen itself */
- if (!(psr & IA64_PSR_CPL)) BUG();
-
- switch(vector) {
- case 8:
- vector = IA64_DIRTY_BIT_VECTOR; break;
- case 9:
- vector = IA64_INST_ACCESS_BIT_VECTOR; break;
- case 10:
- check_lazy_cover = 1;
- vector = IA64_DATA_ACCESS_BIT_VECTOR; break;
- case 20:
- check_lazy_cover = 1;
- vector = IA64_PAGE_NOT_PRESENT_VECTOR; break;
- case 22:
- vector = IA64_INST_ACCESS_RIGHTS_VECTOR; break;
- case 23:
- check_lazy_cover = 1;
- vector = IA64_DATA_ACCESS_RIGHTS_VECTOR; break;
- case 25:
- vector = IA64_DISABLED_FPREG_VECTOR;
- break;
- case 26:
- if (((isr >> 4L) & 0xfL) == 1) {
- //regs->eml_unat = 0; FIXME: DO WE NEED THIS??
- printf("ia64_handle_reflection: handling regNaT
fault\n");
- vector = IA64_NAT_CONSUMPTION_VECTOR; break;
- }
-#if 1
- // pass null pointer dereferences through with no error
- // but retain debug output for non-zero ifa
- if (!ifa) {
- vector = IA64_NAT_CONSUMPTION_VECTOR; break;
- }
-#endif
- printf("*** NaT fault... attempting to handle as privop\n");
- printf("isr=%016lx, ifa=%016lx, iip=%016lx, ipsr=%016lx\n",
- isr, ifa, regs->cr_iip, psr);
- //regs->eml_unat = 0; FIXME: DO WE NEED THIS???
- // certain NaT faults are higher priority than privop faults
- vector = priv_emulate(v,regs,isr);
- if (vector == IA64_NO_FAULT) {
- printf("*** Handled privop masquerading as NaT
fault\n");
- return;
- }
- vector = IA64_NAT_CONSUMPTION_VECTOR; break;
- case 27:
- //printf("*** Handled speculation vector,
itc=%lx!\n",ia64_get_itc());
- PSCB(current,iim) = iim;
- vector = IA64_SPECULATION_VECTOR; break;
- case 30:
- // FIXME: Should we handle unaligned refs in Xen??
- vector = IA64_UNALIGNED_REF_VECTOR; break;
- case 32:
- if (!(handle_fpu_swa(1, regs, isr))) {
- vcpu_increment_iip(v);
- return;
- }
- printf("ia64_handle_reflection: handling FP fault\n");
- vector = IA64_FP_FAULT_VECTOR; break;
- case 33:
- if (!(handle_fpu_swa(0, regs, isr))) return;
- printf("ia64_handle_reflection: handling FP trap\n");
- vector = IA64_FP_TRAP_VECTOR; break;
- case 34:
- printf("ia64_handle_reflection: handling lowerpriv trap\n");
- vector = IA64_LOWERPRIV_TRANSFER_TRAP_VECTOR; break;
- case 35:
- printf("ia64_handle_reflection: handling taken branch trap\n");
- vector = IA64_TAKEN_BRANCH_TRAP_VECTOR; break;
- case 36:
- printf("ia64_handle_reflection: handling single step trap\n");
- vector = IA64_SINGLE_STEP_TRAP_VECTOR; break;
-
- default:
- printf("ia64_handle_reflection: unhandled
vector=0x%lx\n",vector);
- while(vector);
- return;
- }
- if (check_lazy_cover && (isr & IA64_ISR_IR) && handle_lazy_cover(v,
regs)) return;
- PSCB(current,ifa) = ifa;
- PSCB(current,itir) = vcpu_get_itir_on_fault(v,ifa);
- reflect_interruption(isr,regs,vector);
-}
-
-unsigned long hypercall_create_continuation(
- unsigned int op, const char *format, ...)
-{
- struct mc_state *mcs = &mc_state[smp_processor_id()];
- struct vcpu *v = current;
- const char *p = format;
- unsigned long arg;
- unsigned int i;
- va_list args;
-
- va_start(args, format);
- if ( test_bit(_MCSF_in_multicall, &mcs->flags) ) {
- panic("PREEMPT happen in multicall\n"); // Not support yet
- } else {
- vcpu_set_gr(v, 2, op, 0);
- for ( i = 0; *p != '\0'; i++) {
- switch ( *p++ )
- {
- case 'i':
- arg = (unsigned long)va_arg(args, unsigned int);
- break;
- case 'l':
- arg = (unsigned long)va_arg(args, unsigned long);
- break;
- case 'h':
- arg = (unsigned long)va_arg(args, void *);
- break;
- default:
- arg = 0;
- BUG();
- }
- switch (i) {
- case 0: vcpu_set_gr(v, 14, arg, 0);
- break;
- case 1: vcpu_set_gr(v, 15, arg, 0);
- break;
- case 2: vcpu_set_gr(v, 16, arg, 0);
- break;
- case 3: vcpu_set_gr(v, 17, arg, 0);
- break;
- case 4: vcpu_set_gr(v, 18, arg, 0);
- break;
- default: panic("Too many args for hypercall continuation\n");
- break;
- }
- }
- }
- v->arch.hypercall_continuation = 1;
- va_end(args);
- return op;
-}
-
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