ARM:OMAP:add omap4 support in iommu

This patch adds omap4 support in iommu
module. This creates OMAP4 platform specific file
for iommu and defines the Ducati MMU fault interrupt.
Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com>

arch/arm/mach-omap2/omap4-iommu.c

+/*
+ * omap iommu: omap4 device registration
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ *
+ * Written by Hari Kanigeri <h-kanigeri2@ti.com>
+ *
+ * Added support for OMAP4. This is based on original file
+ * omap3-iommu.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+
+#include <mach/iommu.h>
+#include <mach/irqs.h>
+
+#define OMAP4_MMU1_BASE	0x55082000
+#define OMAP4_MMU2_BASE	0x4A066000
+
+#define OMAP4_MMU1_IRQ	INT_44XX_DUCATI_MMU_IRQ
+#define OMAP4_MMU2_IRQ	INT_44XX_DSP_MMU
+
+
+
+static unsigned long iommu_base[] __initdata = {
+	OMAP4_MMU1_BASE,
+	OMAP4_MMU2_BASE,
+};
+
+static int iommu_irq[] __initdata = {
+	OMAP4_MMU1_IRQ,
+	OMAP4_MMU2_IRQ,
+};
+
+static const struct iommu_platform_data omap4_iommu_pdata[] __initconst = {
+	{
+		.name = "ducati",
+		.nr_tlb_entries = 32,
+		.clk_name = "ducati_ick",
+	},
+#if defined(CONFIG_MPU_TESLA_IOMMU)
+	{
+		.name = "tesla",
+		.nr_tlb_entries = 32,
+		.clk_name = "tesla_ick",
+	},
+#endif
+};
+#define NR_IOMMU_DEVICES ARRAY_SIZE(omap4_iommu_pdata)
+
+static struct platform_device *omap4_iommu_pdev[NR_IOMMU_DEVICES];
+
+static int __init omap4_iommu_init(void)
+{
+	int i, err;
+
+	for (i = 0; i < NR_IOMMU_DEVICES; i++) {
+		struct platform_device *pdev;
+		struct resource res[2];
+
+		pdev = platform_device_alloc("omap-iommu", i);
+		if (!pdev) {
+			err = -ENOMEM;
+			goto err_out;
+		}
+
+		memset(res, 0,  sizeof(res));
+		res[0].start = iommu_base[i];
+		res[0].end = iommu_base[i] + MMU_REG_SIZE - 1;
+		res[0].flags = IORESOURCE_MEM;
+		res[1].start = res[1].end = iommu_irq[i];
+		res[1].flags = IORESOURCE_IRQ;
+
+		err = platform_device_add_resources(pdev, res,
+						    ARRAY_SIZE(res));
+		if (err)
+			goto err_out;
+		err = platform_device_add_data(pdev, &omap4_iommu_pdata[i],
+					       sizeof(omap4_iommu_pdata[0]));
+		if (err)
+			goto err_out;
+		err = platform_device_add(pdev);
+		if (err)
+			goto err_out;
+		omap4_iommu_pdev[i] = pdev;
+	}
+	return 0;
+
+err_out:
+	while (i--)
+		platform_device_put(omap4_iommu_pdev[i]);
+	return err;
+}
+module_init(omap4_iommu_init);
+
+static void __exit omap4_iommu_exit(void)
+{
+	int i;
+
+	for (i = 0; i < NR_IOMMU_DEVICES; i++)
+		platform_device_unregister(omap4_iommu_pdev[i]);
+}
+module_exit(omap4_iommu_exit);
+
+MODULE_AUTHOR("Hiroshi DOYU, Hari Kanigeri");
+MODULE_DESCRIPTION("omap iommu: omap4 device registration");
+MODULE_LICENSE("GPL v2");
+

arch/arm/plat-omap/include/mach/irqs.h

@@ -511,7 +511,7 @@
 #define INT_44XX_TLL_IRQ	(78 + IRQ_GIC_START)
 #define INT_44XX_PARTHASH_IRQ	(79 + IRQ_GIC_START)
 #define INT_44XX_MMC3_IRQ	(94 + IRQ_GIC_START)
-
+#define INT_44XX_DUCATI_MMU_IRQ	(100 + IRQ_GIC_START)
 
 /* Max. 128 level 2 IRQs (OMAP1610), 192 GPIOs (OMAP730/850) and
  * 16 MPUIO lines */