summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms
diff options
context:
space:
mode:
authorAlexey Kardashevskiy <aik@ozlabs.ru>2015-06-15 17:49:59 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2015-06-18 07:16:02 +1000
commitb5926430dfa07d17e5d768c16b0d81c13a793f7c (patch)
treed7c708805c99ec3aa116d0932934b62989ffeadd /arch/powerpc/platforms
parentcdf2bc1c283066d6f0834cc5dd4fcf5d01e44af9 (diff)
downloadlinux-b5926430dfa07d17e5d768c16b0d81c13a793f7c.tar.bz2
powerpc/iommu/ioda2: Enable compile with IOV=on and IOMMU_API=off
The pnv_pci_ioda2_unset_window() function is used to do the final cleanup of a DMA window being released: - via VFIO ioctl by the guest request; - via unplugging a virtual PCI function. However the function was under #ifdef CONFIG_IOMMU_API and was missing. This moves the helper outside of IOMMU_API block and enables it for either or both IOMMU_API and PCI_IOV. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/powernv/pci-ioda.c50
1 files changed, 26 insertions, 24 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index b9f0f430e249..8424f5cdf0b1 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -2116,6 +2116,32 @@ static long pnv_pci_ioda2_setup_default_config(struct pnv_ioda_pe *pe)
return 0;
}
+#if defined(CONFIG_IOMMU_API) || defined(CONFIG_PCI_IOV)
+static long pnv_pci_ioda2_unset_window(struct iommu_table_group *table_group,
+ int num)
+{
+ struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe,
+ table_group);
+ struct pnv_phb *phb = pe->phb;
+ long ret;
+
+ pe_info(pe, "Removing DMA window #%d\n", num);
+
+ ret = opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number,
+ (pe->pe_number << 1) + num,
+ 0/* levels */, 0/* table address */,
+ 0/* table size */, 0/* page size */);
+ if (ret)
+ pe_warn(pe, "Unmapping failed, ret = %ld\n", ret);
+ else
+ pnv_pci_ioda2_tce_invalidate_entire(pe);
+
+ pnv_pci_unlink_table_and_group(table_group->tables[num], table_group);
+
+ return ret;
+}
+#endif
+
#ifdef CONFIG_IOMMU_API
static unsigned long pnv_pci_ioda2_get_table_size(__u32 page_shift,
__u64 window_size, __u32 levels)
@@ -2149,30 +2175,6 @@ static unsigned long pnv_pci_ioda2_get_table_size(__u32 page_shift,
return bytes;
}
-static long pnv_pci_ioda2_unset_window(struct iommu_table_group *table_group,
- int num)
-{
- struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe,
- table_group);
- struct pnv_phb *phb = pe->phb;
- long ret;
-
- pe_info(pe, "Removing DMA window #%d\n", num);
-
- ret = opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number,
- (pe->pe_number << 1) + num,
- 0/* levels */, 0/* table address */,
- 0/* table size */, 0/* page size */);
- if (ret)
- pe_warn(pe, "Unmapping failed, ret = %ld\n", ret);
- else
- pnv_pci_ioda2_tce_invalidate_entire(pe);
-
- pnv_pci_unlink_table_and_group(table_group->tables[num], table_group);
-
- return ret;
-}
-
static void pnv_ioda2_take_ownership(struct iommu_table_group *table_group)
{
struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe,