[msm7x27a]: Initial commit to support 7x27a target.
Change-Id: Ibc8e40c40fe1ea8071f51d9f1d65f3b766bf2f9c
diff --git a/platform/msm7x27a/interrupts.c b/platform/msm7x27a/interrupts.c
new file mode 100644
index 0000000..aca4cdc
--- /dev/null
+++ b/platform/msm7x27a/interrupts.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2008, Google Inc.
+ * 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 Google, Inc. 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 AND FITNESS
+ * FOR A PARTICULAR PURPOSE 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.
+ */
+
+#include <debug.h>
+#include <arch/arm.h>
+#include <reg.h>
+#include <kernel/thread.h>
+#include <platform/interrupts.h>
+
+#include <platform/irqs.h>
+#include <platform/iomap.h>
+
+#define VIC_REG(off) (MSM_VIC_BASE + (off))
+
+#define VIC_INT_SELECT0 VIC_REG(0x0000) /* 1: FIQ, 0: IRQ */
+#define VIC_INT_SELECT1 VIC_REG(0x0004) /* 1: FIQ, 0: IRQ */
+#define VIC_INT_EN0 VIC_REG(0x0010)
+#define VIC_INT_EN1 VIC_REG(0x0014)
+#define VIC_INT_ENCLEAR0 VIC_REG(0x0020)
+#define VIC_INT_ENCLEAR1 VIC_REG(0x0024)
+#define VIC_INT_ENSET0 VIC_REG(0x0030)
+#define VIC_INT_ENSET1 VIC_REG(0x0034)
+#define VIC_INT_TYPE0 VIC_REG(0x0040) /* 1: EDGE, 0: LEVEL */
+#define VIC_INT_TYPE1 VIC_REG(0x0044) /* 1: EDGE, 0: LEVEL */
+#define VIC_INT_POLARITY0 VIC_REG(0x0050) /* 1: NEG, 0: POS */
+#define VIC_INT_POLARITY1 VIC_REG(0x0054) /* 1: NEG, 0: POS */
+#define VIC_NO_PEND_VAL VIC_REG(0x0060)
+#define VIC_INT_MASTEREN VIC_REG(0x0064) /* 1: IRQ, 2: FIQ */
+#define VIC_PROTECTION VIC_REG(0x006C) /* 1: ENABLE */
+#define VIC_CONFIG VIC_REG(0x0068) /* 1: USE ARM1136 VIC */
+#define VIC_IRQ_STATUS0 VIC_REG(0x0080)
+#define VIC_IRQ_STATUS1 VIC_REG(0x0084)
+#define VIC_FIQ_STATUS0 VIC_REG(0x0090)
+#define VIC_FIQ_STATUS1 VIC_REG(0x0094)
+#define VIC_RAW_STATUS0 VIC_REG(0x00A0)
+#define VIC_RAW_STATUS1 VIC_REG(0x00A4)
+#define VIC_INT_CLEAR0 VIC_REG(0x00B0)
+#define VIC_INT_CLEAR1 VIC_REG(0x00B4)
+#define VIC_SOFTINT0 VIC_REG(0x00C0)
+#define VIC_SOFTINT1 VIC_REG(0x00C4)
+#define VIC_IRQ_VEC_RD VIC_REG(0x00D0) /* pending int # */
+#define VIC_IRQ_VEC_PEND_RD VIC_REG(0x00D4) /* pending vector addr */
+#define VIC_IRQ_VEC_WR VIC_REG(0x00D8)
+#define VIC_IRQ_IN_SERVICE VIC_REG(0x00E0)
+#define VIC_IRQ_IN_STACK VIC_REG(0x00E4)
+#define VIC_TEST_BUS_SEL VIC_REG(0x00E8)
+
+struct ihandler {
+ int_handler func;
+ void *arg;
+};
+
+static struct ihandler handler[NR_IRQS];
+
+void platform_init_interrupts(void)
+{
+ writel(0xffffffff, VIC_INT_CLEAR0);
+ writel(0xffffffff, VIC_INT_CLEAR1);
+ writel(0, VIC_INT_SELECT0);
+ writel(0, VIC_INT_SELECT1);
+ writel(0xffffffff, VIC_INT_TYPE0);
+ writel(0xffffffff, VIC_INT_TYPE1);
+ writel(0, VIC_CONFIG);
+ writel(1, VIC_INT_MASTEREN);
+}
+
+enum handler_return platform_irq(struct arm_iframe *frame)
+{
+ unsigned num;
+ enum handler_return ret;
+ num = readl(VIC_IRQ_VEC_RD);
+ num = readl(VIC_IRQ_VEC_PEND_RD);
+ if (num > NR_IRQS)
+ return 0;
+ writel(1 << (num & 31), (num > 31) ? VIC_INT_CLEAR1 : VIC_INT_CLEAR0);
+ ret = handler[num].func(handler[num].arg);
+ writel(0, VIC_IRQ_VEC_WR);
+ return ret;
+}
+
+void platform_fiq(struct arm_iframe *frame)
+{
+ PANIC_UNIMPLEMENTED;
+}
+
+status_t mask_interrupt(unsigned int vector)
+{
+ unsigned reg = (vector > 31) ? VIC_INT_ENCLEAR1 : VIC_INT_ENCLEAR0;
+ unsigned bit = 1 << (vector & 31);
+ writel(bit, reg);
+ return 0;
+}
+
+status_t unmask_interrupt(unsigned int vector)
+{
+ unsigned reg = (vector > 31) ? VIC_INT_ENSET1 : VIC_INT_ENSET0;
+ unsigned bit = 1 << (vector & 31);
+ writel(bit, reg);
+ return 0;
+}
+
+void register_int_handler(unsigned int vector, int_handler func, void *arg)
+{
+ if (vector >= NR_IRQS)
+ return;
+
+ enter_critical_section();
+ handler[vector].func = func;
+ handler[vector].arg = arg;
+ exit_critical_section();
+}
+