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/arch/mips/lasat/lasatIRQ.S b/arch/mips/lasat/lasatIRQ.S
new file mode 100644
index 0000000..2a2b0d0
--- /dev/null
+++ b/arch/mips/lasat/lasatIRQ.S
@@ -0,0 +1,69 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999, 2000 MIPS Technologies, Inc. All rights reserved.
+ *
+ * This program is free software; you can distribute it and/or modify it
+ * under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Interrupt exception dispatch code.
+ */
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+ .text
+ .set noreorder
+ .align 5
+ NESTED(lasatIRQ, PT_SIZE, sp)
+ .set noat
+ SAVE_ALL
+ CLI
+ .set at
+ .set noreorder
+
+ mfc0 s0, CP0_CAUSE # get irq mask
+
+ /* First we check for r4k counter/timer IRQ. */
+ andi a0, s0, CAUSEF_IP7
+ beq a0, zero, 1f
+ andi a0, s0, CAUSEF_IP2 # delay slot, check hw0 interrupt
+
+ /* Wheee, a timer interrupt. */
+ li a0, 7
+ jal ll_timer_interrupt
+ move a1, sp
+
+ j ret_from_irq
+ nop
+
+1:
+ /* Wheee, combined hardware level zero interrupt. */
+ jal lasat_hw0_irqdispatch
+ move a0, sp # delay slot
+
+ j ret_from_irq
+ nop # delay slot
+
+1:
+ /*
+ * Here by mistake? This is possible, what can happen is that by the
+ * time we take the exception the IRQ pin goes low, so just leave if
+ * this is the case.
+ */
+ move a1,s0
+ mfc0 a1, CP0_EPC
+
+ j ret_from_irq
+ nop
+ END(lasatIRQ)