msm: irq: rename existing entry-macro to entry-macro-vic

The existing MSM irq entry macro is specific to a VIC
implementation. Renaming this makes room for irq support based on
other interrupt controllers.

Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>

4 files changed, 178 insertions, 29 deletions

diff --git a/arch/arm/mach-msm/include/mach/entry-macro-qgic.S b/arch/arm/mach-msm/include/mach/entry-macro-qgic.S
new file mode 100644
index 000000000000..4dc99aa65d07
--- /dev/null
+++ b/arch/arm/mach-msm/include/mach/entry-macro-qgic.S
@@ -0,0 +1,88 @@
+/*
+ * Low-level IRQ helper macros
+ *
+ * Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *
+ * 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/hardware.h>
+#include <asm/hardware/gic.h>
+
+        .macro  disable_fiq
+        .endm
+
+        .macro  get_irqnr_preamble, base, tmp
+        ldr     \base, =gic_cpu_base_addr
+        ldr     \base, [\base]
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
+        /*
+         * The interrupt numbering scheme is defined in the
+         * interrupt controller spec.  To wit:
+         *
+         * Migrated the code from ARM MP port to be more consistant
+         * with interrupt processing , the following still holds true
+         * however, all interrupts are treated the same regardless of
+         * if they are local IPI or PPI
+         *
+         * Interrupts 0-15 are IPI
+         * 16-31 are PPI
+         *   (16-18 are the timers)
+         * 32-1020 are global
+         * 1021-1022 are reserved
+         * 1023 is "spurious" (no interrupt)
+         *
+         * A simple read from the controller will tell us the number of the
+         * highest priority enabled interrupt.  We then just need to check
+         * whether it is in the valid range for an IRQ (0-1020 inclusive).
+         *
+         * Base ARM code assumes that the local (private) peripheral interrupts
+         * are not valid, we treat them differently, in that the privates are
+         * handled like normal shared interrupts with the exception that only
+         * one processor can register the interrupt and the handler must be
+         * the same for all processors.
+         */
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+        ldr  \irqstat, [\base, #GIC_CPU_INTACK] /* bits 12-10 =srcCPU,
+                                                   9-0 =int # */
+
+        bic     \irqnr, \irqstat, #0x1c00       @mask src
+        cmp     \irqnr, #15
+        ldr             \tmp, =1021
+        cmpcc   \irqnr, \irqnr
+        cmpne   \irqnr, \tmp
+        cmpcs   \irqnr, \irqnr
+
+        .endm
+
+        /* We assume that irqstat (the raw value of the IRQ acknowledge
+         * register) is preserved from the macro above.
+         * If there is an IPI, we immediately signal end of interrupt on the
+         * controller, since this requires the original irqstat value which
+         * we won't easily be able to recreate later.
+         */
+        .macro test_for_ipi, irqnr, irqstat, base, tmp
+    bic \irqnr, \irqstat, #0x1c00
+    cmp \irqnr, #16
+    strcc   \irqstat, [\base, #GIC_CPU_EOI]
+    cmpcs   \irqnr, \irqnr
+        .endm
+
+        /* As above, this assumes that irqstat and base are preserved.. */
+
+        .macro test_for_ltirq, irqnr, irqstat, base, tmp
+    bic \irqnr, \irqstat, #0x1c00
+    mov     \tmp, #0
+    cmp \irqnr, #16
+    moveq   \tmp, #1
+    streq   \irqstat, [\base, #GIC_CPU_EOI]
+    cmp \tmp, #0
+        .endm
diff --git a/arch/arm/mach-msm/include/mach/entry-macro-vic.S b/arch/arm/mach-msm/include/mach/entry-macro-vic.S
new file mode 100644
index 000000000000..70563ed11b36
--- /dev/null
+++ b/arch/arm/mach-msm/include/mach/entry-macro-vic.S
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Author: Brian Swetland <swetland@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ */
+
+#include <mach/msm_iomap.h>
+
+        .macro  disable_fiq
+        .endm
+
+        .macro  get_irqnr_preamble, base, tmp
+        @ enable imprecise aborts
+        cpsie   a
+        mov     \base, #MSM_VIC_BASE
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        @ 0xD0 has irq# or old irq# if the irq has been handled
+        @ 0xD4 has irq# or -1 if none pending *but* if you just
+        @ read 0xD4 you never get the first irq for some reason
+        ldr     \irqnr, [\base, #0xD0]
+        ldr     \irqnr, [\base, #0xD4]
+        cmp     \irqnr, #0xffffffff
+        .endm
diff --git a/arch/arm/mach-msm/include/mach/entry-macro.S b/arch/arm/mach-msm/include/mach/entry-macro.S
index d2259486bcb1..b16f082eeb6f 100644
--- a/arch/arm/mach-msm/include/mach/entry-macro.S
+++ b/arch/arm/mach-msm/include/mach/entry-macro.S
@@ -1,38 +1,23 @@
-/* arch/arm/mach-msm7200/include/mach/entry-macro.S
+/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
  *
- * Copyright (C) 2007 Google, Inc.
- * Author: Brian Swetland <swetland@google.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
  */
 
-#include <mach/msm_iomap.h>
-
-        .macro  disable_fiq
-        .endm
-
-        .macro  get_irqnr_preamble, base, tmp
-        @ enable imprecise aborts
-        cpsie   a
-        mov     \base, #MSM_VIC_BASE
-        .endm
-
-        .macro  arch_ret_to_user, tmp1, tmp2
-        .endm
-
-        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
-        @ 0xD0 has irq# or old irq# if the irq has been handled
-        @ 0xD4 has irq# or -1 if none pending *but* if you just
-        @ read 0xD4 you never get the first irq for some reason
-        ldr     \irqnr, [\base, #0xD0]
-        ldr     \irqnr, [\base, #0xD4]
-        cmp     \irqnr, #0xffffffff
-        .endm
+#if defined(CONFIG_ARM_GIC)
+#include <mach/entry-macro-qgic.S>
+#else
+#include <mach/entry-macro-vic.S>
+#endif
diff --git a/arch/arm/mach-msm/include/mach/smp.h b/arch/arm/mach-msm/include/mach/smp.h
new file mode 100644
index 000000000000..3ff7bf5e679e
--- /dev/null
+++ b/arch/arm/mach-msm/include/mach/smp.h
@@ -0,0 +1,39 @@
+/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Code Aurora nor
+ *       the names of its contributors may be used to endorse or promote
+ *       products derived from this software without specific prior written
+ *       permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS 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.
+ *
+ */
+
+#ifndef __ASM_ARCH_MSM_SMP_H
+#define __ASM_ARCH_MSM_SMP_H
+
+#include <asm/hardware/gic.h>
+
+static inline void smp_cross_call(const struct cpumask *mask)
+{
+        gic_raise_softirq(mask, 1);
+}
+
+#endif