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authorJoerg Roedel <jroedel@suse.de>2015-10-20 17:33:44 +0200
committerJoerg Roedel <jroedel@suse.de>2015-10-21 11:30:33 +0200
commit226e889b20a99c073615ff5f5b6ea0bbccf25c5f (patch)
tree5ff6ab5d96ee05e81a4a7e973cb0434227f99669 /drivers/iommu
parentd1259416985513ba97f75a63ecf5bc75592a4b8d (diff)
downloadlwn-226e889b20a99c073615ff5f5b6ea0bbccf25c5f.tar.gz
lwn-226e889b20a99c073615ff5f5b6ea0bbccf25c5f.zip
iommu/amd: Remove first/last_device handling
The code is buggy and the values read from PCI are not reliable anyway, so it is the best to just remove this code. Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu_init.c34
-rw-r--r--drivers/iommu/amd_iommu_types.h5
2 files changed, 3 insertions, 36 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index eca678242e4d..71734f7bc248 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -824,20 +824,10 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
switch (e->type) {
case IVHD_DEV_ALL:
- DUMP_printk(" DEV_ALL\t\t\t first devid: %02x:%02x.%x"
- " last device %02x:%02x.%x flags: %02x\n",
- PCI_BUS_NUM(iommu->first_device),
- PCI_SLOT(iommu->first_device),
- PCI_FUNC(iommu->first_device),
- PCI_BUS_NUM(iommu->last_device),
- PCI_SLOT(iommu->last_device),
- PCI_FUNC(iommu->last_device),
- e->flags);
+ DUMP_printk(" DEV_ALL\t\t\tflags: %02x\n", e->flags);
- for (dev_i = iommu->first_device;
- dev_i <= iommu->last_device; ++dev_i)
- set_dev_entry_from_acpi(iommu, dev_i,
- e->flags, 0);
+ for (dev_i = 0; dev_i <= amd_iommu_last_bdf; ++dev_i)
+ set_dev_entry_from_acpi(iommu, dev_i, e->flags, 0);
break;
case IVHD_DEV_SELECT:
@@ -993,17 +983,6 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
return 0;
}
-/* Initializes the device->iommu mapping for the driver */
-static int __init init_iommu_devices(struct amd_iommu *iommu)
-{
- u32 i;
-
- for (i = iommu->first_device; i <= iommu->last_device; ++i)
- set_iommu_for_device(iommu, i);
-
- return 0;
-}
-
static void __init free_iommu_one(struct amd_iommu *iommu)
{
free_command_buffer(iommu);
@@ -1122,8 +1101,6 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
*/
amd_iommu_rlookup_table[iommu->devid] = NULL;
- init_iommu_devices(iommu);
-
return 0;
}
@@ -1250,11 +1227,6 @@ static int iommu_init_pci(struct amd_iommu *iommu)
pci_read_config_dword(iommu->dev, cap_ptr + MMIO_MISC_OFFSET,
&misc);
- iommu->first_device = PCI_DEVID(MMIO_GET_BUS(range),
- MMIO_GET_FD(range));
- iommu->last_device = PCI_DEVID(MMIO_GET_BUS(range),
- MMIO_GET_LD(range));
-
if (!(iommu->cap & (1 << IOMMU_CAP_IOTLB)))
amd_iommu_iotlb_sup = false;
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index 921b2e95161b..fc9501dc7067 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -516,11 +516,6 @@ struct amd_iommu {
/* pci domain of this IOMMU */
u16 pci_seg;
- /* first device this IOMMU handles. read from PCI */
- u16 first_device;
- /* last device this IOMMU handles. read from PCI */
- u16 last_device;
-
/* start of exclusion range of that IOMMU */
u64 exclusion_start;
/* length of exclusion range of that IOMMU */