[PATCH] PCI/P2PDMA: Add additional AMD ZEN root ports to the whitelist

Alex Deucher alexdeucher at gmail.com
Fri Apr 3 19:38:59 UTC 2020


According to the hw architect, pre-ZEN parts support
p2p writes and ZEN parts support both p2p reads and writes.

Add entries for Zen parts Raven (0x15d0) and Renoir (0x1630).

Cc: Christian König <christian.koenig at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/pci/p2pdma.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 9a8a38384121..91a4c987399d 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -282,6 +282,8 @@ static const struct pci_p2pdma_whitelist_entry {
 } pci_p2pdma_whitelist[] = {
 	/* AMD ZEN */
 	{PCI_VENDOR_ID_AMD,	0x1450,	0},
+	{PCI_VENDOR_ID_AMD,	0x15d0,	0},
+	{PCI_VENDOR_ID_AMD,	0x1630,	0},
 
 	/* Intel Xeon E5/Core i7 */
 	{PCI_VENDOR_ID_INTEL,	0x3c00, REQ_SAME_HOST_BRIDGE},
-- 
2.25.1



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