[PATCH 07/14] PCI/P2PDMA: Add the provider's pci_dev to the dev_pgmap struct

Logan Gunthorpe
2019-07-22T23:09:24Z

The provider will be needed to figure out how to properly map a device.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
drivers/pci/p2pdma.c | 1 +
include/linux/memremap.h | 1 +
2 files changed, 2 insertions(+)

diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 143e11d2a5c3..70c262b7c731 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -168,6 +168,7 @@ int pci_p2pdma_add_resource(struct pci_dev *pdev, int bar, size_t size,
pgmap->res.end = pgmap->res.start + size - 1;
pgmap->res.flags = pci_resource_flags(pdev, bar);
pgmap->type = MEMORY_DEVICE_PCI_P2PDMA;
+ pgmap->pci_p2pdma_provider = pdev;
pgmap->pci_p2pdma_bus_offset = pci_bus_address(pdev, bar) -
pci_resource_start(pdev, bar);

diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index f8a5b2a19945..91aee61796bc 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -112,6 +112,7 @@ struct dev_pagemap {
struct device *dev;
enum memory_type type;
unsigned int flags;
+ struct pci_dev *pci_p2pdma_provider;
u64 pci_p2pdma_bus_offset;
const struct dev_pagemap_ops *ops;
};
--
2.20.1