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Date: Wed, 17 Sep 2008 18:52:42 +0200
From: Joerg Roedel <joerg.roedel@....com>
To: linux-kernel@...r.kernel.org
CC: iommu@...ts.linux-foundation.org,
Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 08/23] AMD IOMMU: save pci_dev instead of devid
We need the pci_dev later anyways to enable MSI for the IOMMU hardware.
So remove the devid pointing to the BDF and replace it with the pci_dev
structure where the IOMMU is implemented.
Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
arch/x86/kernel/amd_iommu_init.c | 25 ++++++++++++++++---------
include/asm-x86/amd_iommu_types.h | 5 +++--
2 files changed, 19 insertions(+), 11 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index aa26e37..da619fc 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -243,9 +243,12 @@ static void __init iommu_feature_disable(struct amd_iommu *iommu, u8 bit)
/* Function to enable the hardware */
void __init iommu_enable(struct amd_iommu *iommu)
{
- printk(KERN_INFO "AMD IOMMU: Enabling IOMMU at ");
- print_devid(iommu->devid, 0);
- printk(" cap 0x%hx\n", iommu->cap_ptr);
+ printk(KERN_INFO "AMD IOMMU: Enabling IOMMU "
+ "at %02x:%02x.%x cap 0x%hx\n",
+ iommu->dev->bus->number,
+ PCI_SLOT(iommu->dev->devfn),
+ PCI_FUNC(iommu->dev->devfn),
+ iommu->cap_ptr);
iommu_feature_enable(iommu, CONTROL_IOMMU_EN);
}
@@ -512,15 +515,14 @@ static void __init set_device_exclusion_range(u16 devid, struct ivmd_header *m)
*/
static void __init init_iommu_from_pci(struct amd_iommu *iommu)
{
- int bus = PCI_BUS(iommu->devid);
- int dev = PCI_SLOT(iommu->devid);
- int fn = PCI_FUNC(iommu->devid);
int cap_ptr = iommu->cap_ptr;
u32 range;
- iommu->cap = read_pci_config(bus, dev, fn, cap_ptr+MMIO_CAP_HDR_OFFSET);
+ pci_read_config_dword(iommu->dev, cap_ptr + MMIO_CAP_HDR_OFFSET,
+ &iommu->cap);
+ pci_read_config_dword(iommu->dev, cap_ptr + MMIO_RANGE_OFFSET,
+ &range);
- range = read_pci_config(bus, dev, fn, cap_ptr+MMIO_RANGE_OFFSET);
iommu->first_device = calc_devid(MMIO_GET_BUS(range),
MMIO_GET_FD(range));
iommu->last_device = calc_devid(MMIO_GET_BUS(range),
@@ -675,7 +677,10 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
/*
* Copy data from ACPI table entry to the iommu struct
*/
- iommu->devid = h->devid;
+ iommu->dev = pci_get_bus_and_slot(PCI_BUS(h->devid), h->devid & 0xff);
+ if (!iommu->dev)
+ return 1;
+
iommu->cap_ptr = h->cap_ptr;
iommu->pci_seg = h->pci_seg;
iommu->mmio_phys = h->mmio_phys;
@@ -696,6 +701,8 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
init_iommu_from_acpi(iommu, h);
init_iommu_devices(iommu);
+ pci_enable_device(iommu->dev);
+
return 0;
}
diff --git a/include/asm-x86/amd_iommu_types.h b/include/asm-x86/amd_iommu_types.h
index eb4d47a..58c80f0 100644
--- a/include/asm-x86/amd_iommu_types.h
+++ b/include/asm-x86/amd_iommu_types.h
@@ -215,8 +215,9 @@ struct amd_iommu {
/* locks the accesses to the hardware */
spinlock_t lock;
- /* device id of this IOMMU */
- u16 devid;
+ /* Pointer to PCI device of this IOMMU */
+ struct pci_dev *dev;
+
/*
* Capability pointer. There could be more than one IOMMU per PCI
* device function if there are more than one AMD IOMMU capability
--
1.5.6.4
--
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