linux-kernel - [PATCH] PCI: Add function 0 DMA alias quirk for Glenfly arise chip

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Message-ID: <DB918DA5CBA08DE8+20240802161109.240191-1-wangyuli@uniontech.com>
Date: Sat,  3 Aug 2024 00:11:09 +0800
From: WangYuli <wangyuli@...ontech.com>
To: bhelgaas@...gle.com,
	siyuli@...nfly.com
Cc: linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	guanwentao@...ontech.com,
	linux@...izon.com,
	pat-lkml@...ey.org,
	alex.williamson@...hat.com,
	WangYuli <wangyuli@...ontech.com>
Subject: [PATCH] PCI: Add function 0 DMA alias quirk for Glenfly arise chip

Add DMA support for audio function of Glenfly arise chip,
which uses request id of function 0.

Signed-off-by: SiyuLi <siyuli@...nfly.com>
Signed-off-by: WangYuli <wangyuli@...ontech.com>
---
 drivers/pci/quirks.c    | 6 ++++++
 include/linux/pci_ids.h | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index a2ce4e08edf5..a6cb8b314fae 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4246,6 +4246,12 @@ static void quirk_dma_func0_alias(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias);
 
+/*
+ * Some Glenfly chips use function 0 as the PCIe requester ID for DMA too.
+ */
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GLENFLY, PCI_DEVICE_ID_GLENFLY_ARISE10C0_AUDIO, quirk_dma_func0_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GLENFLY, PCI_DEVICE_ID_GLENFLY_ARISE1020_AUDIO, quirk_dma_func0_alias);
+
 static void quirk_dma_func1_alias(struct pci_dev *dev)
 {
 	if (PCI_FUNC(dev->devfn) != 1)
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index e388c8b1cbc2..35d2314cc433 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1654,6 +1654,10 @@
 #define PCI_DEVICE_ID_RICOH_R5C832	0x0832
 #define PCI_DEVICE_ID_RICOH_R5C843	0x0843
 
+#define PCI_VENDOR_ID_GLENFLY	    0x6766
+#define PCI_DEVICE_ID_GLENFLY_ARISE10C0_AUDIO	 0x3D40
+#define PCI_DEVICE_ID_GLENFLY_ARISE1020_AUDIO	 0x3D41
+
 #define PCI_VENDOR_ID_DLINK		0x1186
 #define PCI_DEVICE_ID_DLINK_DGE510T	0x4c00
 
-- 
2.43.4