[Skiboot] [PATCH v2 3/5] skiboot: Trace IMC Macro definitions

[Anju T Sudhakar]

Add macros needed for Trace mode enablement of IMC(In-Memory
Collection Counters). These macros are used to identify the
trace node in the device-tree and to make appropriate scom calls
to enable trace-mode in the hardware.

Signed-off-by: Anju T Sudhakar <anju at linux.vnet.ibm.com>
Reviewed-by: Madhavan Srinivasan <maddy at linux.vnet.ibm.com>
---
 include/imc.h      | 30 ++++++++++++++++++++++++++++++
 include/opal-api.h |  1 +
 2 files changed, 31 insertions(+)

diff --git a/include/imc.h b/include/imc.h
index f3d906ee..1f9f57ed 100644
--- a/include/imc.h
+++ b/include/imc.h
@@ -112,6 +112,7 @@ struct imc_chip_cb
 #define IMC_COUNTER_CHIP		0x10
 #define IMC_COUNTER_CORE		0x4
 #define IMC_COUNTER_THREAD		0x1
+#define IMC_COUNTER_TRACE		0x2
 
 /*
  * Nest IMC operations
@@ -128,6 +129,35 @@ struct imc_chip_cb
 #define CORE_IMC_HTM_MODE_ENABLE	0xE800000000000000ull
 #define CORE_IMC_HTM_MODE_DISABLE	0xE000000000000000ull
 
+/*
+ * Trace IMC SCOMs for IMC trace-mode.
+ *
+ * TRACE_IMC_SCOM layout
+ *
+ *  0          4         8         12        16        20        24        28
+ * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
+ *   [ ] [      CPMC_LOAD [2:33]
+ *    |
+ *    *SAMPSEL
+ *
+ *  32        36        40        44        48        52        56        60
+ * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
+ *     ] [               ] [             ]   [   ] [     RESERVED [51:63]        ]
+ *     		|		 |	       |
+ *     		*CPMC1SEL	 *CPMC2SEL     *BUFFERSIZE
+ */
+#define TRACE_IMC_ADDR            0x20010AA9ull
+#define TRACE_IMC_SAMPLESEL(x)	((uint64_t)x << 62)
+#define TRACE_IMC_CPMC_LOAD(x)	((0xffffffff - (uint64_t)x) << 30)
+#define TRACE_IMC_CPMC1SEL(x)	((uint64_t)x << 23)
+#define TRACE_IMC_CPMC2SEL(x)	((uint64_t)x << 16)
+#define TRACE_IMC_BUFFERSIZE(x)	((uint64_t)x << 13)
+#define TRACE_IMC_SCOM(a, b, c, d, e)	(TRACE_IMC_SAMPLESEL(a)	|\
+					TRACE_IMC_CPMC_LOAD(b)	|\
+					TRACE_IMC_CPMC1SEL(c)	|\
+					TRACE_IMC_CPMC2SEL(d)	|\
+					TRACE_IMC_BUFFERSIZE(e))
+
 void imc_init(void);
 void imc_catalog_preload(void);
 
diff --git a/include/opal-api.h b/include/opal-api.h
index 5f397c8e..909a7fa8 100644
--- a/include/opal-api.h
+++ b/include/opal-api.h
@@ -1301,6 +1301,7 @@ enum {
 enum {
 	OPAL_IMC_COUNTERS_NEST = 1,
 	OPAL_IMC_COUNTERS_CORE = 2,
+	OPAL_IMC_COUNTERS_TRACE = 3,
 };
 
 
-- 
2.17.1