Opteron revision F will support higher frequencies than

can be encoded in the current driver's 4 bit frequency
field.  This patch updates the driver to support Rev F
including 6 bit FIDs and processor ID updates.

This should apply cleanly whether or not the dual-core
bugfix I sent out last week is applied.  I'd prefer
that both get applied, of course.

Signed-off-by: David Keck <david.keck@amd.com>
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 13 insertions, 16 deletions

diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
index 9cf7b67b8afc..7fe5b2aaa209 100644
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
@@ -1,5 +1,5 @@
 /*
- *   (c) 2003, 2004 Advanced Micro Devices, Inc.
+ *   (c) 2003, 2004, 2005 Advanced Micro Devices, Inc.
  *  Your use of this code is subject to the terms and conditions of the
  *  GNU general public license version 2. See "COPYING" or
  *  http://www.gnu.org/licenses/gpl.html
@@ -44,7 +44,7 @@
 
 #define PFX "powernow-k8: "
 #define BFX PFX "BIOS error: "
-#define VERSION "version 1.40.4"
+#define VERSION "version 1.50.3"
 #include "powernow-k8.h"
 
 /* serialize freq changes  */
@@ -232,7 +232,7 @@ static int write_new_vid(struct powernow_k8_data *data, u32 vid)
 /*
  * Reduce the vid by the max of step or reqvid.
  * Decreasing vid codes represent increasing voltages:
- * vid of 0 is 1.550V, vid of 0x1e is 0.800V, vid of 0x1f is off.
+ * vid of 0 is 1.550V, vid of 0x1e is 0.800V, vid of VID_OFF is off.
  */
 static int decrease_vid_code_by_step(struct powernow_k8_data *data, u32 reqvid, u32 step)
 {
@@ -467,7 +467,7 @@ static int check_supported_cpu(unsigned int cpu)
         eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE);
         if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) ||
             ((eax & CPUID_XFAM) != CPUID_XFAM_K8) ||
-            ((eax & CPUID_XMOD) > CPUID_XMOD_REV_E)) {
+            ((eax & CPUID_XMOD) > CPUID_XMOD_REV_F)) {
                 printk(KERN_INFO PFX "Processor cpuid %x not supported\n", eax);
                 goto out;
         }
@@ -696,6 +696,7 @@ static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned
 
         data->irt = (data->acpi_data.states[index].control >> IRT_SHIFT) & IRT_MASK;
         data->rvo = (data->acpi_data.states[index].control >> RVO_SHIFT) & RVO_MASK;
+        data->exttype = (data->acpi_data.states[index].control >> EXT_TYPE_SHIFT) & EXT_TYPE_MASK;
         data->plllock = (data->acpi_data.states[index].control >> PLL_L_SHIFT) & PLL_L_MASK;
         data->vidmvs = 1 << ((data->acpi_data.states[index].control >> MVS_SHIFT) & MVS_MASK);
         data->vstable = (data->acpi_data.states[index].control >> VST_SHIFT) & VST_MASK;
@@ -735,8 +736,13 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
         }
 
         for (i = 0; i < data->acpi_data.state_count; i++) {
-                u32 fid = data->acpi_data.states[i].control & FID_MASK;
-                u32 vid = (data->acpi_data.states[i].control >> VID_SHIFT) & VID_MASK;
+                if (data->exttype) {
+                        u32 fid = data->acpi_data.states[i].status & FID_MASK;
+                        u32 vid = (data->acpi_data.states[i].status >> VID_SHIFT) & VID_MASK;
+                } else {
+                        u32 fid = data->acpi_data.states[i].control & FID_MASK;
+                        u32 vid = (data->acpi_data.states[i].control >> VID_SHIFT) & VID_MASK;
+                }
 
                 dprintk("   %d : fid 0x%x, vid 0x%x\n", i, fid, vid);
 
@@ -753,7 +759,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
                 }
 
                 /* verify voltage is OK - BIOSs are using "off" to indicate invalid */
-                if (vid == 0x1f) {
+                if (vid == VID_OFF) {
                         dprintk("invalid vid %u, ignoring\n", vid);
                         powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
                         continue;
@@ -930,15 +936,6 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
 
         down(&fidvid_sem);
 
-        for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
-                /* make sure the sibling is initialized */
-                if (!powernow_data[i]) {
-                        ret = 0;
-                        up(&fidvid_sem);
-                        goto err_out;
-                }
-        }
-
         powernow_k8_acpi_pst_values(data, newstate);
 
         if (transition_frequency(data, newstate)) {