Hi Hiroshi,
> > +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
> > +};
>
> If iommu is used as a character device driver, is the above config still
> necessary?
-- My apologies, I am not sure what you mean by this. Can you please elaborate a bit more.
Thank you,
Best regards,
Hari
> -----Original Message-----
> From: Hiroshi DOYU [mailto:Hiroshi.DOYU@xxxxxxxxx]
> Sent: Friday, July 24, 2009 1:22 PM
> To: Kanigeri, Hari
> Cc: tony@xxxxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx; Gupta, Ramesh;
> rmk@xxxxxxxxxxxxxxxx; Pasam, Vijay
> Subject: Re: [RFC][PATCH 2/3] ARM:OMAP4 iommu:add omap4 support in iommu
>
> From: "ext Kanigeri, Hari" <h-kanigeri2@xxxxxx>
> Subject: [RFC][PATCH 2/3] ARM:OMAP4 iommu:add omap4 support in iommu
> Date: Fri, 24 Jul 2009 19:22:32 +0200
>
> > 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
> > +};
>
> If iommu is used as a character device driver, is the above config still
> necessary?
>
> > +#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
> >
--
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