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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [IA64] implement ia64 cpufreq notify hypercall
# HG changeset patch
# User Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
# Date 1223605044 -32400
# Node ID 903a901ab37243ac2bfb356eb4c4c5b02dbe6c6c
# Parent a311996570f4d81a954766d2638e64b7cd78489a
[IA64] implement ia64 cpufreq notify hypercall
This patch implement the ia64 cpufreq hypercall to get dom0 cpufreq ACPI info.
Signed-off-by: Yu Ke <ke.yu@xxxxxxxxx>
Signed-off-by: Liu Jinsong <jinsong.liu@xxxxxxxxx>
---
xen/arch/ia64/linux-xen/acpi.c | 30 +++++++++++
xen/arch/ia64/linux-xen/entry.S | 2
xen/arch/ia64/xen/Makefile | 1
xen/arch/ia64/xen/cpufreq/cpufreq.c | 16 +-----
xen/arch/ia64/xen/domain.c | 1
xen/arch/ia64/xen/platform_hypercall.c | 87 +++++++++++++++++++++++++++++++++
6 files changed, 123 insertions(+), 14 deletions(-)
diff -r a311996570f4 -r 903a901ab372 xen/arch/ia64/linux-xen/acpi.c
--- a/xen/arch/ia64/linux-xen/acpi.c Fri Oct 10 11:17:24 2008 +0900
+++ b/xen/arch/ia64/linux-xen/acpi.c Fri Oct 10 11:17:24 2008 +0900
@@ -219,6 +219,32 @@ acpi_parse_lapic_addr_ovr(struct acpi_su
return 0;
}
+#ifdef XEN
+
+#define MAX_LOCAL_SAPIC 255
+static u16 ia64_acpiid_to_sapicid[ MAX_LOCAL_SAPIC ] =
+ {[0 ... MAX_LOCAL_SAPIC - 1] = 0xffff };
+
+/* acpi id to cpu id */
+int get_cpu_id(u8 acpi_id)
+{
+ int i;
+ u16 apic_id;
+
+ apic_id = ia64_acpiid_to_sapicid[acpi_id];
+ if ( apic_id == 0xffff )
+ return -EINVAL;
+
+ for ( i = 0; i < NR_CPUS; i++ )
+ {
+ if ( apic_id == ia64_cpu_to_sapicid[i] )
+ return i;
+ }
+
+ return -1;
+}
+#endif
+
static int __init
acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long
end)
{
@@ -232,6 +258,10 @@ acpi_parse_lsapic(struct acpi_subtable_h
#ifdef CONFIG_SMP
smp_boot_data.cpu_phys_id[available_cpus] =
(lsapic->id << 8) | lsapic->eid;
+#endif
+#ifdef XEN
+ ia64_acpiid_to_sapicid[lsapic->processor_id] =
+ (lsapic->id << 8) | lsapic->eid;
#endif
++available_cpus;
}
diff -r a311996570f4 -r 903a901ab372 xen/arch/ia64/linux-xen/entry.S
--- a/xen/arch/ia64/linux-xen/entry.S Fri Oct 10 11:17:24 2008 +0900
+++ b/xen/arch/ia64/linux-xen/entry.S Fri Oct 10 11:17:24 2008 +0900
@@ -1524,7 +1524,7 @@ ia64_hypercall_table:
data8 do_ni_hypercall /* do_set_callbacks */
data8 do_ni_hypercall /* do_fpu_taskswitch *//* 5 */
data8 do_sched_op_compat
- data8 do_ni_hypercall
+ data8 do_platform_op
data8 do_ni_hypercall /* do_set_debugreg */
data8 do_ni_hypercall /* do_get_debugreg */
data8 do_ni_hypercall /* do_update_descriptor * 10 */
diff -r a311996570f4 -r 903a901ab372 xen/arch/ia64/xen/Makefile
--- a/xen/arch/ia64/xen/Makefile Fri Oct 10 11:17:24 2008 +0900
+++ b/xen/arch/ia64/xen/Makefile Fri Oct 10 11:17:24 2008 +0900
@@ -15,6 +15,7 @@ obj-y += fw_emul.o
obj-y += fw_emul.o
obj-y += hpsimserial.o
obj-y += hypercall.o
+obj-y += platform_hypercall.o
obj-y += hyperprivop.o
obj-y += idle0_task.o
obj-y += irq.o
diff -r a311996570f4 -r 903a901ab372 xen/arch/ia64/xen/cpufreq/cpufreq.c
--- a/xen/arch/ia64/xen/cpufreq/cpufreq.c Fri Oct 10 11:17:24 2008 +0900
+++ b/xen/arch/ia64/xen/cpufreq/cpufreq.c Fri Oct 10 11:17:24 2008 +0900
@@ -305,20 +305,10 @@ static int __init cpufreq_driver_init(vo
return ret;
}
+
__initcall(cpufreq_driver_init);
-int get_cpu_id(u8 acpi_id)
-{
- return -1;
-}
-
-int xenpf_copy_px_states(struct processor_performance *pxpt,
- struct xen_processor_performance *dom0_px_info)
-{
- return -ENOSYS;
-}
-
int cpufreq_cpu_init(unsigned int cpuid)
{
- return -ENOSYS;
-}
+ return cpufreq_add_cpu(cpuid);
+}
diff -r a311996570f4 -r 903a901ab372 xen/arch/ia64/xen/domain.c
--- a/xen/arch/ia64/xen/domain.c Fri Oct 10 11:17:24 2008 +0900
+++ b/xen/arch/ia64/xen/domain.c Fri Oct 10 11:17:24 2008 +0900
@@ -2160,6 +2160,7 @@ int __init construct_dom0(struct domain
snprintf(si->magic, sizeof(si->magic), "xen-3.0-ia64");
si->nr_pages = max_pages;
si->flags = SIF_INITDOMAIN|SIF_PRIVILEGED;
+ si->flags |= (xen_processor_pmbits << 8) & SIF_PM_MASK;
printk("Dom0: 0x%lx\n", (u64)dom0);
diff -r a311996570f4 -r 903a901ab372 xen/arch/ia64/xen/platform_hypercall.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/ia64/xen/platform_hypercall.c Fri Oct 10 11:17:24 2008 +0900
@@ -0,0 +1,87 @@
+/******************************************************************************
+ * platform_hypercall.c
+ *
+ * Hardware platform operations. Intended for use by domain-0 kernel.
+ *
+ * Copyright (c) 2002-2006, K Fraser
+ */
+
+#include <xen/config.h>
+#include <xen/types.h>
+#include <xen/lib.h>
+#include <xen/sched.h>
+#include <xen/guest_access.h>
+#include <xen/acpi.h>
+#include <public/platform.h>
+#include <acpi/cpufreq/processor_perf.h>
+
+DEFINE_SPINLOCK(xenpf_lock);
+
+extern int set_px_pminfo(uint32_t cpu, struct xen_processor_performance *perf);
+extern long set_cx_pminfo(uint32_t cpu, struct xen_processor_power *power);
+
+int xenpf_copy_px_states(struct processor_performance *pxpt,
+ struct xen_processor_performance *dom0_px_info)
+{
+ if (!pxpt || !dom0_px_info)
+ return -EINVAL;
+ return copy_from_guest(pxpt->states, dom0_px_info->states,
+ dom0_px_info->state_count);
+}
+
+long do_platform_op(XEN_GUEST_HANDLE(xen_platform_op_t) u_xenpf_op)
+{
+ long ret = 0;
+ struct xen_platform_op curop, *op = &curop;
+
+ if ( !IS_PRIV(current->domain) )
+ return -EPERM;
+
+ if ( copy_from_guest(op, u_xenpf_op, 1) )
+ return -EFAULT;
+
+ if ( op->interface_version != XENPF_INTERFACE_VERSION )
+ return -EACCES;
+
+ switch ( op->cmd )
+ {
+ case XENPF_set_processor_pminfo:
+ spin_lock(&xenpf_lock);
+ switch ( op->u.set_pminfo.type )
+ {
+ case XEN_PM_PX:
+ ret = set_px_pminfo(op->u.set_pminfo.id,
+ &op->u.set_pminfo.perf);
+ break;
+
+ case XEN_PM_CX:
+ /* Place holder for Cx */
+ ret = -ENOSYS;
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ spin_unlock(&xenpf_lock);
+ break;
+
+ default:
+ printk("Unknown platform hypercall op 0x%x\n", op->cmd);
+ ret = -ENOSYS;
+ break;
+ }
+
+ return ret;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
+
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