Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f779f923 authored by Kanigeri, Hari's avatar Kanigeri, Hari Committed by Hiroshi DOYU
Browse files

omap iommu: support for OMAP4 



This patch provides the iommu support for OMAP4 co-processors.

Signed-off-by: default avatarHari Kanigeri <h-kanigeri2@ti.com>
Signed-off-by: default avatarHiroshi DOYU <Hiroshi.DOYU@nokia.com>
parent 44da397f

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

+54 −5
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/platform_device.h>



#include <plat/iommu.h>

#include <plat/irqs.h>



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);

arch/arm/plat-omap/include/plat/omap44xx.h

+3 −0
Original line number Diff line number Diff line
@@ -48,5 +48,8 @@ 
#define OMAP44XX_MAILBOX_BASE		(L4_44XX_BASE + 0xF4000)

#define OMAP44XX_HSUSB_OTG_BASE		(L4_44XX_BASE + 0xAB000)



#define OMAP4_MMU1_BASE			0x55082000

#define OMAP4_MMU2_BASE			0x4A066000



#endif /* __ASM_ARCH_OMAP44XX_H */