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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-integrator/entry-macro.S
Linux-2.6.12-rc2v2.6.12-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!
Diffstat (limited to 'include/asm-arm/arch-integrator/entry-macro.S')
-rw-r--r--include/asm-arm/arch-integrator/entry-macro.S36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/asm-arm/arch-integrator/entry-macro.S b/include/asm-arm/arch-integrator/entry-macro.S
new file mode 100644
index 00000000000..44f7ee61319
--- /dev/null
+++ b/include/asm-arm/arch-integrator/entry-macro.S
@@ -0,0 +1,36 @@
+/*
+ * include/asm-arm/arch-integrator/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Integrator 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
+/* FIXME: should not be using soo many LDRs here */
+ ldr \base, =IO_ADDRESS(INTEGRATOR_IC_BASE)
+ mov \irqnr, #IRQ_PIC_START
+ ldr \irqstat, [\base, #IRQ_STATUS] @ get masked status
+ ldr \base, =IO_ADDRESS(INTEGRATOR_HDR_BASE)
+ teq \irqstat, #0
+ ldreq \irqstat, [\base, #(INTEGRATOR_HDR_IC_OFFSET+IRQ_STATUS)]
+ moveq \irqnr, #IRQ_CIC_START
+
+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 */
+ .endm
+