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iommu/s390: Add support for iommu_device handling

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Add support for the iommu_device_register interface to make
the s390 hardware iommus visible to the iommu core and in
sysfs.

Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel
2017-04-27 14:44:06 +02:00
parent ef954844c7
commit f42c223514
3 changed files with 50 additions and 1 deletions
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7
arch/s390/include/asm/pci.h
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@@ -8,6 +8,7 @@
#include <linux/pci.h>
#include <linux/mutex.h>
#include <linux/iommu.h>
#include <asm-generic/pci.h>
#include <asm/pci_clp.h>
#include <asm/pci_debug.h>
@@ -122,6 +123,8 @@ struct zpci_dev {
unsigned long iommu_pages;
unsigned int next_bit;
struct iommu_device iommu_dev; /* IOMMU core handle */
char res_name[16];
struct zpci_bar_struct bars[PCI_BAR_COUNT];
@@ -174,6 +177,10 @@ int clp_enable_fh(struct zpci_dev *, u8);
int clp_disable_fh(struct zpci_dev *);
int clp_get_state(u32 fid, enum zpci_state *state);
/* IOMMU Interface */
int zpci_init_iommu(struct zpci_dev *zdev);
void zpci_destroy_iommu(struct zpci_dev *zdev);
#ifdef CONFIG_PCI
/* Error handling and recovery */
void zpci_event_error(void *);