On Fri, Sep 28, 2012 at 02:23:51PM +0200, Joerg Roedel wrote:
> The IVRS ACPI table provides information about the IOAPICs
> and the HPETs available in the system and which PCI device
> ID they use in transactions. Save that information for later
> usage in interrupt remapping.
>
> Signed-off-by: Joerg Roedel <joerg.roe...@amd.com>
> ---
> drivers/iommu/amd_iommu.c | 3 ++
> drivers/iommu/amd_iommu_init.c | 65
> +++++++++++++++++++++++++++++++++++++--
> drivers/iommu/amd_iommu_types.h | 34 ++++++++++++++++++++
> 3 files changed, 100 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
> index b64502d..6f51483 100644
> --- a/drivers/iommu/amd_iommu.c
> +++ b/drivers/iommu/amd_iommu.c
> @@ -72,6 +72,9 @@ static DEFINE_SPINLOCK(iommu_pd_list_lock);
> static LIST_HEAD(dev_data_list);
> static DEFINE_SPINLOCK(dev_data_list_lock);
>
> +LIST_HEAD(ioapic_map);
> +LIST_HEAD(hpet_map);
> +
> /*
> * Domain for untranslated devices - only allocated
> * if iommu=pt passed on kernel cmd line.
> diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
> index 18a89b7..a9f3948 100644
> --- a/drivers/iommu/amd_iommu_init.c
> +++ b/drivers/iommu/amd_iommu_init.c
> @@ -55,6 +55,7 @@
> #define IVHD_DEV_ALIAS_RANGE 0x43
> #define IVHD_DEV_EXT_SELECT 0x46
> #define IVHD_DEV_EXT_SELECT_RANGE 0x47
> +#define IVHD_DEV_SPECIAL 0x48
>
> #define IVHD_FLAG_HT_TUN_EN_MASK 0x01
> #define IVHD_FLAG_PASSPW_EN_MASK 0x02
> @@ -690,6 +691,31 @@ static void __init set_dev_entry_from_acpi(struct
> amd_iommu *iommu,
> set_iommu_for_device(iommu, devid);
> }
>
> +static int add_special_device(u8 type, u8 id, u16 devid)
> +{
> + struct devid_map *entry;
> + struct list_head *list;
> +
> + if (type != 1 && type != 2)
> + return -EINVAL;
Should this be perhaps an enum? or #define?
> +
> + entry = kzalloc(sizeof(*entry), GFP_KERNEL);
> + if (!entry)
> + return -ENOMEM;
> +
> + entry->id = id;
> + entry->devid = devid;
> +
> + if (type == 1)
> + list = &ioapic_map;
> + else
> + list = &hpet_map;
> +
> + list_add_tail(&entry->list, list);
> +
> + return 0;
> +}
> +
Reviwed-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
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