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/vr41xx/common/int-handler.S b/arch/mips/vr41xx/common/int-handler.S
new file mode 100644
index 0000000..38ff89b
--- /dev/null
+++ b/arch/mips/vr41xx/common/int-handler.S
@@ -0,0 +1,114 @@
+/*
+ * FILE NAME
+ * arch/mips/vr41xx/common/int-handler.S
+ *
+ * BRIEF MODULE DESCRIPTION
+ * Interrupt dispatcher for the NEC VR4100 series.
+ *
+ * Author: Yoichi Yuasa
+ * yyuasa@mvista.com or source@mvista.com
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Changes:
+ * MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com>
+ * - New creation, NEC VR4100 series are supported.
+ *
+ * Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ * - Coped with INTASSIGN of NEC VR4133.
+ */
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+#include <asm/stackframe.h>
+
+ .text
+ .set noreorder
+
+ .align 5
+ NESTED(vr41xx_handle_interrupt, PT_SIZE, ra)
+ .set noat
+ SAVE_ALL
+ CLI
+ .set at
+ .set noreorder
+
+ /*
+ * Get the pending interrupts
+ */
+ mfc0 t0, CP0_CAUSE
+ mfc0 t1, CP0_STATUS
+ andi t0, 0xff00
+ and t0, t0, t1
+
+ andi t1, t0, CAUSEF_IP7 # MIPS timer interrupt
+ bnez t1, handle_irq
+ li a0, 7
+
+ andi t1, t0, 0x7800 # check for Int1-4
+ beqz t1, 1f
+
+ andi t1, t0, CAUSEF_IP3 # check for Int1
+ bnez t1, handle_int
+ li a0, 1
+
+ andi t1, t0, CAUSEF_IP4 # check for Int2
+ bnez t1, handle_int
+ li a0, 2
+
+ andi t1, t0, CAUSEF_IP5 # check for Int3
+ bnez t1, handle_int
+ li a0, 3
+
+ andi t1, t0, CAUSEF_IP6 # check for Int4
+ bnez t1, handle_int
+ li a0, 4
+
+1:
+ andi t1, t0, CAUSEF_IP2 # check for Int0
+ bnez t1, handle_int
+ li a0, 0
+
+ andi t1, t0, CAUSEF_IP0 # check for IP0
+ bnez t1, handle_irq
+ li a0, 0
+
+ andi t1, t0, CAUSEF_IP1 # check for IP1
+ bnez t1, handle_irq
+ li a0, 1
+
+ j spurious_interrupt
+ nop
+
+handle_int:
+ jal irq_dispatch
+ move a1, sp
+ j ret_from_irq
+ nop
+
+handle_irq:
+ jal do_IRQ
+ move a1, sp
+ j ret_from_irq
+ END(vr41xx_handle_interrupt)