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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-mv78xx0/include/mach/entry-macro.S
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-mv78xx0/include/mach/entry-macro.S')
-rw-r--r--arch/arm/mach-mv78xx0/include/mach/entry-macro.S41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-mv78xx0/include/mach/entry-macro.S b/arch/arm/mach-mv78xx0/include/mach/entry-macro.S
new file mode 100644
index 00000000..6b1f088e
--- /dev/null
+++ b/arch/arm/mach-mv78xx0/include/mach/entry-macro.S
@@ -0,0 +1,41 @@
+/*
+ * arch/arm/mach-mv78xx0/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Marvell MV78xx0 platforms
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <mach/bridge-regs.h>
+
+ .macro get_irqnr_preamble, base, tmp
+ ldr \base, =IRQ_VIRT_BASE
+ .endm
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ @ check low interrupts
+ ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
+ ldr \tmp, [\base, #IRQ_MASK_LOW_OFF]
+ mov \irqnr, #31
+ ands \irqstat, \irqstat, \tmp
+ bne 1001f
+
+ @ if no low interrupts set, check high interrupts
+ ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
+ ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF]
+ mov \irqnr, #63
+ ands \irqstat, \irqstat, \tmp
+ bne 1001f
+
+ @ if no high interrupts set, check error interrupts
+ ldr \irqstat, [\base, #IRQ_CAUSE_ERR_OFF]
+ ldr \tmp, [\base, #IRQ_MASK_ERR_OFF]
+ mov \irqnr, #95
+ ands \irqstat, \irqstat, \tmp
+
+ @ find first active interrupt source
+1001: clzne \irqstat, \irqstat
+ subne \irqnr, \irqnr, \irqstat
+ .endm