PCI/P2PDMA: Add Google SoCs to the P2P DMA host bridge list

All Google SoCs support peer-to-peer DMA between Root Ports, so add a
wildcard rule to the host bridge list.

Signed-off-by: Jacob Moroni <jmoroni@google.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: David Hu <xuehaohu@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Link: https://patch.msgid.link/20260409150123.3538444-2-jmoroni@google.com

diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 25e9358d066e0bdd0742e7a3e69d3ec88ae2de3a..7c898542af8d5ea309e721709440445d160f7f3b 100644 (file)
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -548,6 +548,8 @@ static const struct pci_p2pdma_whitelist_entry {
        {PCI_VENDOR_ID_INTEL,   0x2033, 0},
        {PCI_VENDOR_ID_INTEL,   0x2020, 0},
        {PCI_VENDOR_ID_INTEL,   0x09a2, 0},
+       /* Google SoCs. */
+       {PCI_VENDOR_ID_GOOGLE,  PCI_ANY_ID, 0},
        {}
 };
 

diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 406abf629be2e4c1cd0d407f1f01047b945eeee4..24cb42f66e4b6068b3ef7f712d4a01dba98e0f50 100644 (file)
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2586,6 +2586,8 @@
 
 #define PCI_VENDOR_ID_AZWAVE           0x1a3b
 
+#define PCI_VENDOR_ID_GOOGLE           0x1ae0
+
 #define PCI_VENDOR_ID_REDHAT_QUMRANET    0x1af4
 #define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4
 #define PCI_SUBDEVICE_ID_QEMU            0x1100