netdev - [PATCH PCI] PCI: Add ACS quirk for Wangxun FF5XXX NICS

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Message-ID: <B12683A3B81C24B5+20241112111816.37290-1-mengyuanlou@net-swift.com>
Date: Tue, 12 Nov 2024 19:18:16 +0800
From: Mengyuan Lou <mengyuanlou@...-swift.com>
To: linux-pci@...r.kernel.org
Cc: netdev@...r.kernel.org,
	jiawenwu@...stnetic.com,
	duanqiangwen@...-swift.com,
	Mengyuan Lou <mengyuanlou@...-swift.com>
Subject: [PATCH PCI] PCI: Add ACS quirk for Wangxun FF5XXX NICS

Wangxun FF5XXX NICs are same as selection of SFxxx, RP1000 and
RP2000 NICS. They may be multi-function devices, but the hardware
does not advertise ACS capability.

Add this ACS quirk for FF5XXX NICs in pci_quirk_wangxun_nic_acs
so the functions can be in independent IOMMU groups.

Signed-off-by: Mengyuan Lou <mengyuanlou@...-swift.com>
---
 drivers/pci/quirks.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index dccb60c1d9cc..d1973a8fd70c 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4996,18 +4996,20 @@ static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags)
 }
 
 /*
- * Wangxun 10G/1G NICs have no ACS capability, and on multi-function
+ * Wangxun 40G/25G/10G/1G NICs have no ACS capability, and on multi-function
  * devices, peer-to-peer transactions are not be used between the functions.
  * So add an ACS quirk for below devices to isolate functions.
  * SFxxx 1G NICs(em).
  * RP1000/RP2000 10G NICs(sp).
+ * FF5xxx 40G/25G/10G NICs(aml).
  */
 static int  pci_quirk_wangxun_nic_acs(struct pci_dev *dev, u16 acs_flags)
 {
 	switch (dev->device) {
-	case 0x0100 ... 0x010F:
-	case 0x1001:
-	case 0x2001:
+	case 0x0100 ... 0x010F: /* EM */
+	case 0x1001: case 0x2001: /* SP */
+	case 0x5010: case 0x5025: case 0x5040: /* AML */
+	case 0x5110: case 0x5125: case 0x5140: /* AML */
 		return pci_acs_ctrl_enabled(acs_flags,
 			PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF);
 	}
-- 
2.43.2