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@xxxxxx>
---
arch/arm/mach-omap2/omap4-iommu.c | 112 ++++++++++++++++++++++++++++++++
arch/arm/plat-omap/include/mach/irqs.h | 2 +-
2 files changed, 113 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-omap2/omap4-iommu.c
diff --git a/arch/arm/mach-omap2/omap4-iommu.c b/arch/arm/mach-omap2/omap4-iommu.c
new file mode 100644
index 0000000..5a782df
--- /dev/null
+++ b/arch/arm/mach-omap2/omap4-iommu.c
@@ -0,0 +1,112 @@
+/*
+ * omap iommu: omap4 device registration
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ *
+ * Written by Hari Kanigeri <h-kanigeri2@xxxxxx>
+ *
+ * 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");
+
diff --git a/arch/arm/plat-omap/include/mach/irqs.h b/arch/arm/plat-omap/include/mach/irqs.h
index fb7cb77..34b6d09 100644
--- a/arch/arm/plat-omap/include/mach/irqs.h
+++ b/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 */
--
1.5.4.3
Thank you,
Best regards,
Hari
Attachment:
0002-ARM-OMAP4-iommu-add-omap4-support-in-iommu.patch
Description: 0002-ARM-OMAP4-iommu-add-omap4-support-in-iommu.patch
