[IA64-SGI] Add new vendor-specific SAL calls for:

- notifying the PROM of specific features that are supported by the OS.
  This is used to enable PROM feature if and only if the corresponding
  feature is implemented in the OS

- fetch feature sets that are supported by the current PROM. This allows
  the OS to selectively enable features when the PROM support is available.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 27 insertions, 9 deletions

diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h
index 27976d223186..231d0d04c3e8 100644
--- a/include/asm-ia64/sn/sn_sal.h
+++ b/include/asm-ia64/sn/sn_sal.h
@@ -80,6 +80,9 @@
 #define SN_SAL_BTE_RECOVER			   0x02000061
 #define SN_SAL_IOIF_GET_PCI_TOPOLOGY	           0x02000062
 
+#define  SN_SAL_GET_PROM_FEATURE_SET		   0x02000065
+#define  SN_SAL_SET_OS_FEATURE_SET		   0x02000066
+
 /*
  * Service-specific constants
  */
@@ -118,8 +121,8 @@
 /*
  * Error Handling Features
  */
-#define SAL_ERR_FEAT_MCA_SLV_TO_OS_INIT_SLV	0x1
-#define SAL_ERR_FEAT_LOG_SBES			0x2
+#define SAL_ERR_FEAT_MCA_SLV_TO_OS_INIT_SLV	0x1	// obsolete
+#define SAL_ERR_FEAT_LOG_SBES			0x2	// obsolete
 #define SAL_ERR_FEAT_MFR_OVERRIDE		0x4
 #define SAL_ERR_FEAT_SBE_THRESHOLD		0xffff0000
 
@@ -152,12 +155,6 @@ sn_sal_rev(void)
 }
 
 /*
- * Specify the minimum PROM revsion required for this kernel.
- * Note that they're stored in hex format...
- */
-#define SN_SAL_MIN_VERSION	0x0404
-
-/*
  * Returns the master console nasid, if the call fails, return an illegal
  * value.
  */
@@ -336,7 +333,7 @@ ia64_sn_plat_cpei_handler(void)
 }
 
 /*
- * Set Error Handling Features
+ * Set Error Handling Features	(Obsolete)
  */
 static inline u64
 ia64_sn_plat_set_error_handling_features(void)
@@ -1100,4 +1097,25 @@ ia64_sn_is_fake_prom(void)
 	return (rv.status == 0);
 }
 
+static inline int
+ia64_sn_get_prom_feature_set(int set, unsigned long *feature_set)
+{
+	struct ia64_sal_retval rv;
+
+	SAL_CALL_NOLOCK(rv, SN_SAL_GET_PROM_FEATURE_SET, set, 0, 0, 0, 0, 0, 0);
+	if (rv.status != 0)
+		return rv.status;
+	*feature_set = rv.v0;
+	return 0;
+}
+
+static inline int
+ia64_sn_set_os_feature(int feature)
+{
+	struct ia64_sal_retval rv;
+
+	SAL_CALL_NOLOCK(rv, SN_SAL_SET_OS_FEATURE_SET, feature, 0, 0, 0, 0, 0, 0);
+	return rv.status;
+}
+
 #endif /* _ASM_IA64_SN_SN_SAL_H */