[Xen-devel] [PATCH][powernow] Fix Linux headers for architectural pstate driver

["Mark Langsdorf" <mark.langsdorf@xxxxxxx>]

For some reason, the header changes necessary to support the
architectural pstate driver are not in linux-2.6.18-xen.hg.
Fix this oversight so the PowerNow! driver can compile.

Signed-off-by: Mark Langsdorf <mark.langsdorf@xxxxxxx>

diff -r fd879c0688bf arch/i386/kernel/cpu/cpufreq/powernow-k8.h
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.h        Fri Nov 23 16:26:56 
2007 +0000
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.h        Thu Nov 29 17:35:31 
2007 -0600
@@ -1,5 +1,5 @@
 /*
- *  (c) 2003-2006 Advanced Micro Devices, Inc.
+#*  (c) 2003-2006 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
@@ -10,6 +10,7 @@ struct powernow_k8_data {
 
        u32 numps;  /* number of p-states */
        u32 batps;  /* number of p-states supported on battery */
+       u32 max_hw_pstate; /* maximum legal hardware pstate */
 
        /* these values are constant when the PSB is used to determine
         * vid/fid pairings, but are modified during the ->target() call
@@ -21,8 +22,8 @@ struct powernow_k8_data {
        u32 plllock; /* pll lock time, units 1 us */
         u32 exttype; /* extended interface = 1 */
 
-       /* keep track of the current fid / vid or did */
-       u32 currvid, currfid, currdid;
+       /* keep track of the current fid / vid or pstate */
+       u32 currvid, currfid, currpstate;
 
        /* the powernow_table includes all frequency and vid/fid pairings:
         * fid are the lower 8 bits of the index, vid are the upper 8 bits.
@@ -88,23 +89,14 @@ struct powernow_k8_data {
 
 /* Hardware Pstate _PSS and MSR definitions */
 #define USE_HW_PSTATE          0x00000080
-#define HW_PSTATE_FID_MASK     0x0000003f
-#define HW_PSTATE_DID_MASK     0x000001c0
-#define HW_PSTATE_DID_SHIFT    6
-#define HW_PSTATE_MASK                 0x00000007
-#define HW_PSTATE_VALID_MASK   0x80000000
-#define HW_FID_INDEX_SHIFT     8
-#define HW_FID_INDEX_MASK      0x0000ff00
-#define HW_DID_INDEX_SHIFT     16
-#define HW_DID_INDEX_MASK      0x00ff0000
-#define HW_WATTS_MASK          0xff
-#define HW_PWR_DVR_MASK                0x300
-#define HW_PWR_DVR_SHIFT       8
-#define HW_PWR_MAX_MULT                3
-#define MAX_HW_PSTATE          8       /* hw pstate supports up to 8 */
+#define HW_PSTATE_MASK         0x00000007
+#define HW_PSTATE_VALID_MASK   0x80000000
+#define HW_PSTATE_MAX_MASK     0x000000f0
+#define HW_PSTATE_MAX_SHIFT    4
 #define MSR_PSTATE_DEF_BASE    0xc0010064 /* base of Pstate MSRs */
 #define MSR_PSTATE_STATUS      0xc0010063 /* Pstate Status MSR */
 #define MSR_PSTATE_CTRL        0xc0010062 /* Pstate control MSR */
+#define MSR_PSTATE_CUR_LIMIT   0xc0010061 /* pstate current limit MSR */
 
 /* define the two driver architectures */
 #define CPU_OPTERON 0



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