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x86, AMD IOMMU: replace DEVID macro with a function 

This patch replaces the DEVID macro with a function and uses them where
apropriate (also in the core code).

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joerg Roedel 2008-07-11 17:14:35 +02:00 committed by Ingo Molnar
parent 83f5aac18c
commit d591b0a3ae
3 changed files with 13 additions and 5 deletions
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2
arch/x86/kernel/amd_iommu.c
View File

@ -664,7 +664,7 @@ static int get_device_resources(struct device *dev,
BUG_ON(!dev || dev->bus != &pci_bus_type || !dev->dma_mask);
pcidev = to_pci_dev(dev);
_bdf = (pcidev->bus->number << 8) | pcidev->devfn;
_bdf = calc_devid(pcidev->bus->number, pcidev->devfn);
/* device not translated by any IOMMU in the system? */
if (_bdf >= amd_iommu_last_bdf) {

9
arch/x86/kernel/amd_iommu_init.c
View File

@ -30,7 +30,6 @@
/*
* definitions for the ACPI scanning code
*/
#define DEVID(bus, devfn) (((bus) << 8) | (devfn))
#define PCI_BUS(x) (((x) >> 8) & 0xff)
#define IVRS_HEADER_LENGTH 48
@ -295,7 +294,7 @@ static int __init find_last_devid_on_pci(int bus, int dev, int fn, int cap_ptr)
u32 cap;
cap = read_pci_config(bus, dev, fn, cap_ptr+MMIO_RANGE_OFFSET);
update_last_devid(DEVID(MMIO_GET_BUS(cap), MMIO_GET_LD(cap)));
update_last_devid(calc_devid(MMIO_GET_BUS(cap), MMIO_GET_LD(cap)));
return 0;
}
@ -494,8 +493,10 @@ static void __init init_iommu_from_pci(struct amd_iommu *iommu)
iommu->cap = read_pci_config(bus, dev, fn, cap_ptr+MMIO_CAP_HDR_OFFSET);
range = read_pci_config(bus, dev, fn, cap_ptr+MMIO_RANGE_OFFSET);
iommu->first_device = DEVID(MMIO_GET_BUS(range), MMIO_GET_FD(range));
iommu->last_device = DEVID(MMIO_GET_BUS(range), MMIO_GET_LD(range));
iommu->first_device = calc_devid(MMIO_GET_BUS(range),
MMIO_GET_FD(range));
iommu->last_device = calc_devid(MMIO_GET_BUS(range),
MMIO_GET_LD(range));
}
/*

7
include/asm-x86/amd_iommu_types.h
View File

@ -332,4 +332,11 @@ static inline void print_devid(u16 devid, int nl)
printk("\n");
}
/* takes bus and device/function and returns the device id
* FIXME: should that be in generic PCI code? */
static inline u16 calc_devid(u8 bus, u8 devfn)
{
return (((u16)bus) << 8) | devfn;
}
#endif