summaryrefslogtreecommitdiff
path: root/arch/blackfin/include/asm/pda.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/blackfin/include/asm/pda.h')
-rw-r--r--arch/blackfin/include/asm/pda.h73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/pda.h b/arch/blackfin/include/asm/pda.h
new file mode 100644
index 000000000..68d6f6618
--- /dev/null
+++ b/arch/blackfin/include/asm/pda.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2007-2009 Analog Devices Inc.
+ * Philippe Gerum <rpm@xenomai.org>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef _ASM_BLACKFIN_PDA_H
+#define _ASM_BLACKFIN_PDA_H
+
+#include <mach/anomaly.h>
+
+#ifndef __ASSEMBLY__
+
+struct blackfin_pda { /* Per-processor Data Area */
+#ifdef CONFIG_SMP
+ struct blackfin_pda *next;
+#endif
+
+ unsigned long syscfg;
+#ifdef CONFIG_SMP
+ unsigned long imask; /* Current IMASK value */
+#endif
+
+ unsigned long *ipdt; /* Start of switchable I-CPLB table */
+ unsigned long *ipdt_swapcount; /* Number of swaps in ipdt */
+ unsigned long *dpdt; /* Start of switchable D-CPLB table */
+ unsigned long *dpdt_swapcount; /* Number of swaps in dpdt */
+
+ /*
+ * Single instructions can have multiple faults, which
+ * need to be handled by traps.c, in irq5. We store
+ * the exception cause to ensure we don't miss a
+ * double fault condition
+ */
+ unsigned long ex_iptr;
+ unsigned long ex_optr;
+ unsigned long ex_buf[4];
+ unsigned long ex_imask; /* Saved imask from exception */
+ unsigned long ex_ipend; /* Saved IPEND from exception */
+ unsigned long *ex_stack; /* Exception stack space */
+
+#ifdef ANOMALY_05000261
+ unsigned long last_cplb_fault_retx;
+#endif
+ unsigned long dcplb_fault_addr;
+ unsigned long icplb_fault_addr;
+ unsigned long retx;
+ unsigned long seqstat;
+ unsigned int __nmi_count; /* number of times NMI asserted on this CPU */
+#ifdef CONFIG_DEBUG_DOUBLEFAULT
+ unsigned long dcplb_doublefault_addr;
+ unsigned long icplb_doublefault_addr;
+ unsigned long retx_doublefault;
+ unsigned long seqstat_doublefault;
+#endif
+};
+
+struct blackfin_initial_pda {
+ void *retx;
+#ifdef CONFIG_DEBUG_DOUBLEFAULT
+ void *dcplb_doublefault_addr;
+ void *icplb_doublefault_addr;
+ void *retx_doublefault;
+ unsigned seqstat_doublefault;
+#endif
+};
+
+extern struct blackfin_pda cpu_pda[];
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_BLACKFIN_PDA_H */