From 0325837c51cb7c9a5bd3e354ac0c0cda0667d50e Mon Sep 17 00:00:00 2001
From: Raymond Pang <RaymondPang-oc@zhaoxin.com>
Date: Fri, 27 Mar 2020 17:11:47 +0800
Subject: [PATCH] PCI: Add ACS quirk for Zhaoxin multi-function devices
Git-commit: 0325837c51cb7c9a5bd3e354ac0c0cda0667d50e
Patch-mainline: v5.7-rc1
References: git-fixes
Some Zhaoxin endpoints are implemented as multi-function devices without an
ACS capability, but they actually don't support peer-to-peer transactions.
Add ACS quirks to declare DMA isolation.
Link: https://lore.kernel.org/r/20200327091148.5190-3-RaymondPang-oc@zhaoxin.com
Signed-off-by: Raymond Pang <RaymondPang-oc@zhaoxin.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/pci/quirks.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 29f473ebf20f..7bdd0f5e4b7b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4701,6 +4701,10 @@ static const struct pci_dev_acs_enabled {
{ PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
/* Amazon Annapurna Labs */
{ PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },
+ /* Zhaoxin multi-function devices */
+ { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs },
+ { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs },
+ { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
{ 0 }
};
--
2.16.4