commit 2d1c645cc50b8f5a718b24bad9eb3931e7105d12
author Marc Gauthier <marc@tensilica.com> Sat Jan 05 04:57:17 2013 +0400
committer Chris Zankel <chris@zankel.net> Sat Feb 23 19:12:52 2013 -0800
tree c385e5064cee10f79b9c359ddd99bd5d1b9f838a
parent d0b73b488c55df905ea8faaad079f8535629ed26

xtensa: dispatch medium-priority interrupts

Add support for dispatching medium-priority interrupts, that is,
interrupts of priority levels 2 to EXCM_LEVEL. IRQ handling may be
preempted by higher priority IRQ.

Signed-off-by: Marc Gauthier <marc@tensilica.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

arch/xtensa/kernel/setup.c

diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 24c1a57..6dd25ec 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -328,6 +328,27 @@
 extern char _UserExceptionVector_text_end;
 extern char _DoubleExceptionVector_literal_start;
 extern char _DoubleExceptionVector_text_end;
+#if XCHAL_EXCM_LEVEL >= 2
+extern char _Level2InterruptVector_text_start;
+extern char _Level2InterruptVector_text_end;
+#endif
+#if XCHAL_EXCM_LEVEL >= 3
+extern char _Level3InterruptVector_text_start;
+extern char _Level3InterruptVector_text_end;
+#endif
+#if XCHAL_EXCM_LEVEL >= 4
+extern char _Level4InterruptVector_text_start;
+extern char _Level4InterruptVector_text_end;
+#endif
+#if XCHAL_EXCM_LEVEL >= 5
+extern char _Level5InterruptVector_text_start;
+extern char _Level5InterruptVector_text_end;
+#endif
+#if XCHAL_EXCM_LEVEL >= 6
+extern char _Level6InterruptVector_text_start;
+extern char _Level6InterruptVector_text_end;
+#endif
+
 
 
 #ifdef CONFIG_S32C1I_SELFTEST
@@ -482,6 +503,27 @@
 	mem_reserve(__pa(&_DoubleExceptionVector_literal_start),
 		    __pa(&_DoubleExceptionVector_text_end), 0);
 
+#if XCHAL_EXCM_LEVEL >= 2
+	mem_reserve(__pa(&_Level2InterruptVector_text_start),
+		    __pa(&_Level2InterruptVector_text_end), 0);
+#endif
+#if XCHAL_EXCM_LEVEL >= 3
+	mem_reserve(__pa(&_Level3InterruptVector_text_start),
+		    __pa(&_Level3InterruptVector_text_end), 0);
+#endif
+#if XCHAL_EXCM_LEVEL >= 4
+	mem_reserve(__pa(&_Level4InterruptVector_text_start),
+		    __pa(&_Level4InterruptVector_text_end), 0);
+#endif
+#if XCHAL_EXCM_LEVEL >= 5
+	mem_reserve(__pa(&_Level5InterruptVector_text_start),
+		    __pa(&_Level5InterruptVector_text_end), 0);
+#endif
+#if XCHAL_EXCM_LEVEL >= 6
+	mem_reserve(__pa(&_Level6InterruptVector_text_start),
+		    __pa(&_Level6InterruptVector_text_end), 0);
+#endif
+
 	bootmem_init();
 
 #ifdef CONFIG_OF