Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-arm/arch-versatile/entry-macro.S b/include/asm-arm/arch-versatile/entry-macro.S
new file mode 100644
index 0000000..90e4e97
--- /dev/null
+++ b/include/asm-arm/arch-versatile/entry-macro.S
@@ -0,0 +1,35 @@
+/*
+ * include/asm-arm/arch-versatile/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Versatile 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.
+ */
+ .macro disable_fiq
+ .endm
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE)
+ ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status
+ mov \irqnr, #0
+ teq \irqstat, #0
+ beq 1003f
+
+1001: tst \irqstat, #15
+ bne 1002f
+ add \irqnr, \irqnr, #4
+ movs \irqstat, \irqstat, lsr #4
+ bne 1001b
+1002: tst \irqstat, #1
+ bne 1003f
+ add \irqnr, \irqnr, #1
+ movs \irqstat, \irqstat, lsr #1
+ bne 1002b
+1003: /* EQ will be set if no irqs pending */
+
+@ clz \irqnr, \irqstat
+@1003: /* EQ will be set if we reach MAXIRQNUM */
+ .endm
+
