# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 9fed76231248e5416dd71c55f9a4bfd690868043
# Parent 1bab7d65171b762bb3cf1ae426bc6c403f847ebf
[IA64] hwclock support
This patch supports the hwclock on Domain-0.
It adds the following EFI runtime service emulations for the
hwclock support.
1. SetTime
2. Get/SetWakeupTime
Signed-off-by: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
---
xen/arch/ia64/xen/fw_emul.c | 136 +++++++++++++++++++++++++++++++++++++++-----
1 files changed, 123 insertions(+), 13 deletions(-)
diff -r 1bab7d65171b -r 9fed76231248 xen/arch/ia64/xen/fw_emul.c
--- a/xen/arch/ia64/xen/fw_emul.c Fri Sep 01 13:04:02 2006 -0600
+++ b/xen/arch/ia64/xen/fw_emul.c Mon Sep 04 14:45:20 2006 -0600
@@ -395,28 +395,124 @@ efi_emulate_get_time(
unsigned long tv_addr, unsigned long tc_addr,
IA64FAULT *fault)
{
- unsigned long tv = 0, tc = 0;
+ unsigned long tv, tc = 0;
struct page_info *tv_page = NULL;
struct page_info *tc_page = NULL;
- efi_status_t status;
+ efi_status_t status = 0;
//printf("efi_get_time(%016lx,%016lx) called\n", tv_addr, tc_addr);
tv = efi_translate_domain_addr(tv_addr, fault, &tv_page);
if (*fault != IA64_NO_FAULT)
- return 0;
+ goto errout;
if (tc_addr) {
tc = efi_translate_domain_addr(tc_addr, fault, &tc_page);
- if (*fault != IA64_NO_FAULT) {
- put_page(tv_page);
- return 0;
- }
- }
+ if (*fault != IA64_NO_FAULT)
+ goto errout;
+ }
+
//printf("efi_get_time(%016lx,%016lx) translated to xen virtual
address\n", tv, tc);
status = (*efi.get_time)((efi_time_t *) tv, (efi_time_cap_t *) tc);
//printf("efi_get_time returns %lx\n", status);
+
+errout:
if (tc_page != NULL)
put_page(tc_page);
- put_page(tv_page);
+ if (tv_page != NULL)
+ put_page(tv_page);
+
+ return status;
+}
+
+static efi_status_t
+efi_emulate_set_time(
+ unsigned long tv_addr, IA64FAULT *fault)
+{
+ unsigned long tv;
+ struct page_info *tv_page = NULL;
+ efi_status_t status = 0;
+
+ if (current->domain != dom0)
+ return EFI_UNSUPPORTED;
+
+ tv = efi_translate_domain_addr(tv_addr, fault, &tv_page);
+ if (*fault != IA64_NO_FAULT)
+ goto errout;
+
+ status = (*efi.set_time)((efi_time_t *)tv);
+
+errout:
+ if (tv_page != NULL)
+ put_page(tv_page);
+
+ return status;
+}
+
+static efi_status_t
+efi_emulate_get_wakeup_time(
+ unsigned long e_addr, unsigned long p_addr,
+ unsigned long tv_addr, IA64FAULT *fault)
+{
+ unsigned long enabled, pending, tv;
+ struct page_info *e_page = NULL, *p_page = NULL,
+ *tv_page = NULL;
+ efi_status_t status = 0;
+
+ if (current->domain != dom0)
+ return EFI_UNSUPPORTED;
+
+ if (!e_addr || !p_addr || !tv_addr)
+ return EFI_INVALID_PARAMETER;
+
+ enabled = efi_translate_domain_addr(e_addr, fault, &e_page);
+ if (*fault != IA64_NO_FAULT)
+ goto errout;
+ pending = efi_translate_domain_addr(p_addr, fault, &p_page);
+ if (*fault != IA64_NO_FAULT)
+ goto errout;
+ tv = efi_translate_domain_addr(tv_addr, fault, &tv_page);
+ if (*fault != IA64_NO_FAULT)
+ goto errout;
+
+ status = (*efi.get_wakeup_time)((efi_bool_t *)enabled,
+ (efi_bool_t *)pending,
+ (efi_time_t *)tv);
+
+errout:
+ if (e_page != NULL)
+ put_page(e_page);
+ if (p_page != NULL)
+ put_page(p_page);
+ if (tv_page != NULL)
+ put_page(tv_page);
+
+ return status;
+}
+
+static efi_status_t
+efi_emulate_set_wakeup_time(
+ unsigned long enabled, unsigned long tv_addr,
+ IA64FAULT *fault)
+{
+ unsigned long tv = 0;
+ struct page_info *tv_page = NULL;
+ efi_status_t status = 0;
+
+ if (current->domain != dom0)
+ return EFI_UNSUPPORTED;
+
+ if (tv_addr) {
+ tv = efi_translate_domain_addr(tv_addr, fault, &tv_page);
+ if (*fault != IA64_NO_FAULT)
+ goto errout;
+ }
+
+ status = (*efi.set_wakeup_time)((efi_bool_t)enabled,
+ (efi_time_t *)tv);
+
+errout:
+ if (tv_page != NULL)
+ put_page(tv_page);
+
return status;
}
@@ -663,6 +759,24 @@ efi_emulator (struct pt_regs *regs, IA64
vcpu_get_gr(v,33),
fault);
break;
+ case FW_HYPERCALL_EFI_SET_TIME:
+ status = efi_emulate_set_time (
+ vcpu_get_gr(v,32),
+ fault);
+ break;
+ case FW_HYPERCALL_EFI_GET_WAKEUP_TIME:
+ status = efi_emulate_get_wakeup_time (
+ vcpu_get_gr(v,32),
+ vcpu_get_gr(v,33),
+ vcpu_get_gr(v,34),
+ fault);
+ break;
+ case FW_HYPERCALL_EFI_SET_WAKEUP_TIME:
+ status = efi_emulate_set_wakeup_time (
+ vcpu_get_gr(v,32),
+ vcpu_get_gr(v,33),
+ fault);
+ break;
case FW_HYPERCALL_EFI_GET_VARIABLE:
status = efi_emulate_get_variable (
vcpu_get_gr(v,32),
@@ -695,10 +809,6 @@ efi_emulator (struct pt_regs *regs, IA64
(u32) vcpu_get_gr(v,34),
(efi_memory_desc_t *) vcpu_get_gr(v,35));
break;
- case FW_HYPERCALL_EFI_SET_TIME:
- case FW_HYPERCALL_EFI_GET_WAKEUP_TIME:
- case FW_HYPERCALL_EFI_SET_WAKEUP_TIME:
- // FIXME: need fixes in efi.h from 2.6.9
case FW_HYPERCALL_EFI_GET_NEXT_HIGH_MONO_COUNT:
// FIXME: need fixes in efi.h from 2.6.9
status = EFI_UNSUPPORTED;
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