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PCI/P2PDMA: Add provider's pci_dev to pci_p2pdma_pagemap struct 

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

Link: https://lore.kernel.org/r/20190730163545.4915-3-logang@deltatee.com
Link: https://lore.kernel.org/r/20190812173048.9186-3-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Logan Gunthorpe 2019-08-12 11:30:36 -06:00 committed by Bjorn Helgaas
parent a6e6fe6549
commit 0afea38143
1 changed files with 2 additions and 0 deletions
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2
drivers/pci/p2pdma.c
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@ -27,6 +27,7 @@ struct pci_p2pdma {
struct pci_p2pdma_pagemap { struct pci_p2pdma_pagemap {
struct dev_pagemap pgmap; struct dev_pagemap pgmap;
struct pci_dev *provider;
u64 bus_offset; u64 bus_offset;
}; };
@ -178,6 +179,7 @@ int pci_p2pdma_add_resource(struct pci_dev *pdev, int bar, size_t size,
pgmap->res.flags = pci_resource_flags(pdev, bar); pgmap->res.flags = pci_resource_flags(pdev, bar);
pgmap->type = MEMORY_DEVICE_PCI_P2PDMA; pgmap->type = MEMORY_DEVICE_PCI_P2PDMA;
p2p_pgmap->provider = pdev;
p2p_pgmap->bus_offset = pci_bus_address(pdev, bar) - p2p_pgmap->bus_offset = pci_bus_address(pdev, bar) -
pci_resource_start(pdev, bar); pci_resource_start(pdev, bar);