[PATCH 5.11 155/342] media: cx23885: add more quirks for reset DMA on some AMD IOMMU

From: Greg Kroah-Hartman
Date: Mon May 10 2021 - 07:31:07 EST


From: Brad Love <brad@xxxxxxxxxxxxxxxx>

[ Upstream commit 5f864cfbf59bfed2057bd214ce7fbf6ad420d54b ]

The folowing AMD IOMMU are affected by the RiSC engine stall, requiring a
reset to maintain continual operation. After being added to the
broken_dev_id list the systems are functional long term.

0x1481 is the PCI ID for the IOMMU found on Starship/Matisse

0x1419 is the PCI ID for the IOMMU found on 15h (Models 10h-1fh) family

0x5a23 is the PCI ID for the IOMMU found on RD890S/RD990

Signed-off-by: Brad Love <brad@xxxxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/media/pci/cx23885/cx23885-core.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/media/pci/cx23885/cx23885-core.c b/drivers/media/pci/cx23885/cx23885-core.c
index 22f55a7840a6..d0ca260ecf70 100644
--- a/drivers/media/pci/cx23885/cx23885-core.c
+++ b/drivers/media/pci/cx23885/cx23885-core.c
@@ -2077,6 +2077,15 @@ static struct {
* 0x1423 is the PCI ID for the IOMMU found on Kaveri
*/
{ PCI_VENDOR_ID_AMD, 0x1423 },
+ /* 0x1481 is the PCI ID for the IOMMU found on Starship/Matisse
+ */
+ { PCI_VENDOR_ID_AMD, 0x1481 },
+ /* 0x1419 is the PCI ID for the IOMMU found on 15h (Models 10h-1fh) family
+ */
+ { PCI_VENDOR_ID_AMD, 0x1419 },
+ /* 0x5a23 is the PCI ID for the IOMMU found on RD890S/RD990
+ */
+ { PCI_VENDOR_ID_ATI, 0x5a23 },
};

static bool cx23885_does_need_dma_reset(void)
--
2.30.2