From f779f9235f5fcaa887747ee13195efd81d09acce Mon Sep 17 00:00:00 2001 From: "Kanigeri, Hari" Date: Thu, 22 Apr 2010 23:26:09 +0000 Subject: omap iommu: support for OMAP4 This patch provides the iommu support for OMAP4 co-processors. Signed-off-by: Hari Kanigeri Signed-off-by: Hiroshi DOYU --- arch/arm/mach-omap2/omap-iommu.c | 59 ++++++++++++++++++++++++++++++++++++---- 1 file changed, 54 insertions(+), 5 deletions(-) (limited to 'arch/arm/mach-omap2/omap-iommu.c') diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c index 416a65d5c4a9..eb9bee73e0cb 100644 --- a/arch/arm/mach-omap2/omap-iommu.c +++ b/arch/arm/mach-omap2/omap-iommu.c @@ -13,6 +13,7 @@ #include #include +#include struct iommu_device { resource_size_t base; @@ -20,9 +21,11 @@ struct iommu_device { struct iommu_platform_data pdata; struct resource res[2]; }; +static struct iommu_device *devices; +static int num_iommu_devices; #ifdef CONFIG_ARCH_OMAP3 -static struct iommu_device devices[] = { +static struct iommu_device omap3_devices[] = { { .base = 0x480bd400, .irq = 24, @@ -44,11 +47,46 @@ static struct iommu_device devices[] = { }, #endif }; +#define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices) +static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES]; +#else +#define omap3_devices NULL +#define NR_OMAP3_IOMMU_DEVICES 0 +#define omap3_iommu_pdev NULL #endif -#define NR_IOMMU_DEVICES ARRAY_SIZE(devices) +#ifdef CONFIG_ARCH_OMAP4 +static struct iommu_device omap4_devices[] = { + { + .base = OMAP4_MMU1_BASE, + .irq = INT_44XX_DUCATI_MMU_IRQ, + .pdata = { + .name = "ducati", + .nr_tlb_entries = 32, + .clk_name = "ducati_ick", + }, + }, +#if defined(CONFIG_MPU_TESLA_IOMMU) + { + .base = OMAP4_MMU2_BASE, + .irq = INT_44XX_DSP_MMU, + .pdata = { + .name = "tesla", + .nr_tlb_entries = 32, + .clk_name = "tesla_ick", + }, + }, +#endif +}; +#define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices) +static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES]; +#else +#define omap4_devices NULL +#define NR_OMAP4_IOMMU_DEVICES 0 +#define omap4_iommu_pdev NULL +#endif -static struct platform_device *omap_iommu_pdev[NR_IOMMU_DEVICES]; +static struct platform_device **omap_iommu_pdev; static int __init omap_iommu_init(void) { @@ -58,7 +96,18 @@ static int __init omap_iommu_init(void) { .flags = IORESOURCE_IRQ }, }; - for (i = 0; i < NR_IOMMU_DEVICES; i++) { + if (cpu_is_omap34xx()) { + devices = omap3_devices; + omap_iommu_pdev = omap3_iommu_pdev; + num_iommu_devices = NR_OMAP3_IOMMU_DEVICES; + } else if (cpu_is_omap44xx()) { + devices = omap4_devices; + omap_iommu_pdev = omap4_iommu_pdev; + num_iommu_devices = NR_OMAP4_IOMMU_DEVICES; + } else + return -ENODEV; + + for (i = 0; i < num_iommu_devices; i++) { struct platform_device *pdev; const struct iommu_device *d = &devices[i]; @@ -98,7 +147,7 @@ static void __exit omap_iommu_exit(void) { int i; - for (i = 0; i < NR_IOMMU_DEVICES; i++) + for (i = 0; i < num_iommu_devices; i++) platform_device_unregister(omap_iommu_pdev[i]); } module_exit(omap_iommu_exit); -- cgit v1.2.2