Initial import of slof-JX-1.7.0-4

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/rtas/rtas_call.c b/rtas/rtas_call.c
new file mode 100644
index 0000000..bf1cf89
--- /dev/null
+++ b/rtas/rtas_call.c
@@ -0,0 +1,89 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <stdint.h>
+#include <rtas.h>
+#include "rtas_table.h"
+
+
+//#define _RTAS_TRACE
+//#define _RTAS_COUNT_CALLS
+
+
+#ifdef _RTAS_COUNT_CALLS
+int rtas_callcount[0x40] __attribute__((aligned (16)));
+#endif
+
+/* rtas_config is used to store the run-time configuration flags (which are
+ * provided by SLOF during instantiate-rtas) */
+long rtas_config;
+
+
+/* 
+Function: rtas_call
+	Input:
+		rtas_args: pointer to RTAS arguments structure
+	Output:
+		
+Decription: Handle RTAS call. This C function is called
+		from the asm function rtas_entry.
+*/
+
+void
+rtas_call (rtas_args_t *rtas_args)
+{
+	int idx;
+
+#ifdef _RTAS_COUNT_CALLS
+	/* Count how often every RTAS function is called. */
+	if (rtas_args->token < (int)(sizeof(rtas_callcount)/sizeof(rtas_callcount[0]))) {
+		static int callcount_initialized = 0;
+		/* If the array is used the first time, we have to set all entries to 0 */
+		if (!callcount_initialized) {
+			unsigned int i;
+			callcount_initialized = 1;
+			for (i = 0; i < sizeof(rtas_callcount)/sizeof(rtas_callcount[0]); i++)
+				rtas_callcount[i] = 0;
+		}
+		/* Increment the counter of the RTAS call */
+		rtas_callcount[rtas_args->token] += 1;
+	}
+#endif
+
+#ifdef _RTAS_TRACE
+	unsigned int parCnt = rtas_args->nargs;
+	unsigned int *pInt = rtas_args->args;
+	printf("\n\r*** rtas_call=0x%x", rtas_args->token);
+#ifdef _RTAS_COUNT_CALLS
+	printf(" count=0x%x", rtas_callcount[rtas_args->token]);
+#endif
+	printf(" len=0x%x", parCnt);
+	printf("\n\r ");
+	while(parCnt--) {
+		printf("0x%x ", *pInt++);
+	}
+#endif
+
+	idx = rtas_args->token - 1;
+
+	/* Check if there's a function for the token: */
+	if (idx >= 0 && idx < rtas_func_tab_size
+	    && rtas_func_tab[idx].func != NULL) {
+		/* Now jump to the RTAS function: */
+		rtas_func_tab[idx].func(rtas_args);
+	}
+	else {
+		/* We didn't find a function - return error code: */
+		rtas_args->args[rtas_args->nargs] = -1;
+	}
+
+}