Am 07.12.21 um 21:57 schrieb Matthew Rosato:
Intercepted zPCI instructions will specify the desired function via a
function handle. Add a routine to find the device with the specified
handle.
Acked-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx>
Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>
I guess we do not have hundreds of devices, so this should be fast enough.
I guess long term wit hundreds of VFs we might want to redo the zpci_list
into a tree but for now as this is just like get_zdev_by_fid
Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
---
arch/s390/include/asm/pci.h | 1 +
arch/s390/pci/pci.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 1a8f9f42da3a..00a2c24d6d2b 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -275,6 +275,7 @@ static inline struct zpci_dev *to_zpci_dev(struct device *dev)
}
struct zpci_dev *get_zdev_by_fid(u32);
+struct zpci_dev *get_zdev_by_fh(u32 fh);
/* DMA */
int zpci_dma_init(void);
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 9b4d3d78b444..af1c0ae017b1 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -76,6 +76,22 @@ struct zpci_dev *get_zdev_by_fid(u32 fid)
return zdev;
}
+struct zpci_dev *get_zdev_by_fh(u32 fh)
+{
+ struct zpci_dev *tmp, *zdev = NULL;
+
+ spin_lock(&zpci_list_lock);
+ list_for_each_entry(tmp, &zpci_list, entry) {
+ if (tmp->fh == fh) {
+ zdev = tmp;
+ break;
+ }
+ }
+ spin_unlock(&zpci_list_lock);
+ return zdev;
+}
+EXPORT_SYMBOL_GPL(get_zdev_by_fh);
+
void zpci_remove_reserved_devices(void)
{
struct zpci_dev *tmp, *zdev;
