[Xen-devel] [PATCH 07/15] x86/acpi: Add Hygon Dhyana support

[Pu Wen <puwen@xxxxxxxx>]

Add Hygon Dhyana support to the acpi cpufreq subsystem by using the code
path of AMD.

Signed-off-by: Pu Wen <puwen@xxxxxxxx>
---
 xen/arch/x86/acpi/cpu_idle.c         | 3 ++-
 xen/arch/x86/acpi/cpufreq/cpufreq.c  | 6 ++++--
 xen/arch/x86/acpi/cpufreq/powernow.c | 3 ++-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
index 14b0278..f57825c 100644
--- a/xen/arch/x86/acpi/cpu_idle.c
+++ b/xen/arch/x86/acpi/cpu_idle.c
@@ -795,7 +795,8 @@ void acpi_dead_idle(void)
             __mwait(cx->address, 0);
         }
     }
-    else if ( current_cpu_data.x86_vendor == X86_VENDOR_AMD &&
+    else if ( (current_cpu_data.x86_vendor == X86_VENDOR_AMD ||
+               current_cpu_data.x86_vendor == X86_VENDOR_HYGON) &&
               cx->entry_method == ACPI_CSTATE_EM_SYSIO )
     {
         /* Intel prefers not to use SYSIO */
diff --git a/xen/arch/x86/acpi/cpufreq/cpufreq.c 
b/xen/arch/x86/acpi/cpufreq/cpufreq.c
index 844ab85..005f99b 100644
--- a/xen/arch/x86/acpi/cpufreq/cpufreq.c
+++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c
@@ -649,7 +649,8 @@ static int __init cpufreq_driver_init(void)
         (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL))
         ret = cpufreq_register_driver(&acpi_cpufreq_driver);
     else if ((cpufreq_controller == FREQCTL_xen) &&
-        (boot_cpu_data.x86_vendor == X86_VENDOR_AMD))
+        (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ||
+         boot_cpu_data.x86_vendor == X86_VENDOR_HYGON))
         ret = powernow_register_driver();
 
     return ret;
@@ -660,8 +661,9 @@ int cpufreq_cpu_init(unsigned int cpuid)
 {
     int ret;
 
-    /* Currently we only handle Intel and AMD processor */
+    /* Currently we only handle Intel and AMD and Hygon processor */
     if ( (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL ) ||
+         (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON ) ||
          (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ) )
         ret = cpufreq_add_cpu(cpuid);
     else
diff --git a/xen/arch/x86/acpi/cpufreq/powernow.c 
b/xen/arch/x86/acpi/cpufreq/powernow.c
index 025b37d..f245908 100644
--- a/xen/arch/x86/acpi/cpufreq/powernow.c
+++ b/xen/arch/x86/acpi/cpufreq/powernow.c
@@ -360,7 +360,8 @@ unsigned int __init powernow_register_driver()
 
     for_each_online_cpu(i) {
         struct cpuinfo_x86 *c = &cpu_data[i];
-        if (c->x86_vendor != X86_VENDOR_AMD)
+        if (c->x86_vendor != X86_VENDOR_AMD &&
+            c->x86_vendor != X86_VENDOR_HYGON)
             ret = -ENODEV;
         else
         {
-- 
2.7.4


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