Commit 3aa9b3ce authored by WangYuli's avatar WangYuli Committed by Heyuan Wang
Browse files

PCI: Add function 0 DMA alias quirk for Glenfly Arise chip 

stable inclusion
from stable-v4.19.323
commit 029efe3b57d981b0c239e50f3513838cae121578
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IBBN6V

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=029efe3b57d981b0c239e50f3513838cae121578

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commit 9246b487ab3c3b5993aae7552b7a4c541cc14a49 upstream.

Add DMA support for audio function of Glenfly Arise chip, which uses
Requester ID of function 0.

Link: https://lore.kernel.org/r/CA2BBD087345B6D1+20240823095708.3237375-1-wangyuli@uniontech.com


Signed-off-by: default avatarSiyuLi <siyuli@glenfly.com>
Signed-off-by: default avatarWangYuli <wangyuli@uniontech.com>
[bhelgaas: lower-case hex to match local code, drop unused Device IDs]
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarHeyuan Wang <wangheyuan2@h-partners.com>
parent 765b1322

drivers/pci/quirks.c

+4 −0
Original line number Diff line number Diff line
@@ -3923,6 +3923,10 @@ 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 */

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GLENFLY, 0x3d40, quirk_dma_func0_alias);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GLENFLY, 0x3d41, quirk_dma_func0_alias);



static void quirk_dma_func1_alias(struct pci_dev *dev)

{

	if (PCI_FUNC(dev->devfn) != 1)

include/linux/pci_ids.h

+2 −0
Original line number Diff line number Diff line
@@ -2626,6 +2626,8 @@ 
#define PCI_DEVICE_ID_DCI_PCCOM8	0x0002

#define PCI_DEVICE_ID_DCI_PCCOM2	0x0004



#define PCI_VENDOR_ID_GLENFLY		0x6766



#define PCI_VENDOR_ID_INTEL		0x8086

#define PCI_DEVICE_ID_INTEL_EESSC	0x0008

#define PCI_DEVICE_ID_INTEL_PXHD_0	0x0320