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From: Huacai Chen <chenhuacai@loongson.cn>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, Huacai Chen <chenhuacai@gmail.com>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Jianmin Lv <lvjianmin@loongson.cn>,
	Huacai Chen <chenhuacai@loongson.cn>
Subject: [PATCH 4/5] PCI: Add quirk for multifunction devices of LS7A
Date: Fri, 14 May 2021 16:00:24 +0800	[thread overview]
Message-ID: <20210514080025.1828197-5-chenhuacai@loongson.cn> (raw)
In-Reply-To: <20210514080025.1828197-1-chenhuacai@loongson.cn>

From: Jianmin Lv <lvjianmin@loongson.cn>

In LS7A, multifunction device use same pci PIN and different
irq for different function, so fix it for standard pci PIN
usage.

Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---
 drivers/pci/quirks.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 10b3b2057940..6ab4b3bba36b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -242,6 +242,23 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,
 			DEV_LS7A_LPC, loongson_system_bus_quirk);
 
+static void loongson_pci_pin_quirk(struct pci_dev *dev)
+{
+	static const struct pci_device_id devids[] = {
+		{ PCI_VDEVICE(LOONGSON, DEV_PCIE_PORT_0) },
+		{ PCI_VDEVICE(LOONGSON, DEV_PCIE_PORT_1) },
+		{ PCI_VDEVICE(LOONGSON, DEV_PCIE_PORT_2) },
+		{ 0, },
+	};
+
+	if (pci_match_id(devids, dev)) {
+		u8 fun = dev->devfn & 7;
+
+		dev->pin = 1 + (fun & 3);
+	}
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LOONGSON, PCI_ANY_ID, loongson_pci_pin_quirk);
+
 static void loongson_mrrs_quirk(struct pci_dev *dev)
 {
 	struct pci_bus *bus = dev->bus;
-- 
2.27.0


  parent reply	other threads:[~2021-05-14  8:03 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-14  8:00 [PATCH 0/5] PCI: Loongson-related pci quirks Huacai Chen
2021-05-14  8:00 ` [PATCH 1/5] PCI/portdrv: Don't disable pci device during shutdown Huacai Chen
2021-05-14 14:20   ` Krzysztof Wilczyński
2021-05-14 16:09   ` Bjorn Helgaas
2021-05-15  3:38     ` Huacai Chen
2021-05-14  8:00 ` [PATCH 2/5] PCI: Move loongson pci quirks to quirks.c Huacai Chen
2021-05-14  8:00 ` [PATCH 3/5] PCI: Improve the mrrs quirk for LS7A Huacai Chen
2021-05-14 14:03   ` Krzysztof Wilczyński
2021-05-14 15:39   ` Bjorn Helgaas
2021-05-15  3:49     ` Huacai Chen
2021-05-15  6:22       ` Jiaxun Yang
2021-05-14  8:00 ` Huacai Chen [this message]
2021-05-14 13:22   ` [PATCH 4/5] PCI: Add quirk for multifunction devices of LS7A Krzysztof Wilczyński
2021-05-14 14:52   ` Jiaxun Yang
2021-05-15  3:52     ` Huacai Chen
2021-05-18 13:59       ` Bjorn Helgaas
2021-05-19  2:26         ` Huacai Chen
2021-05-19  3:05           ` Jiaxun Yang
2021-05-14 15:51   ` Bjorn Helgaas
2021-05-15  3:56     ` Huacai Chen
2021-05-14  8:00 ` [PATCH 5/5] PCI: Support ASpeed VGA cards behind a misbehaving bridge Huacai Chen
2021-05-14 13:56   ` Krzysztof Wilczyński
2021-05-14 15:10   ` Bjorn Helgaas
2021-05-15  9:09     ` Huacai Chen
2021-05-17 12:53       ` Huacai Chen
2021-05-17 18:28         ` Bjorn Helgaas
2021-05-18  2:31           ` 隋景峰
2021-05-18  3:09             ` Bjorn Helgaas
2021-05-18  9:30               ` suijingfeng
2021-05-18 19:31                 ` Bjorn Helgaas
2021-05-18  7:13           ` Huacai Chen
2021-05-18 19:35             ` Bjorn Helgaas
2021-05-19  2:17               ` Huacai Chen
2021-05-19 19:33                 ` Bjorn Helgaas
2021-05-25 11:03                   ` Huacai Chen
2021-05-25 13:55                     ` Bjorn Helgaas
2021-05-26  2:33                       ` Huacai Chen
2021-05-26  2:33                         ` Huacai Chen
2021-05-26  3:00                         ` Dave Airlie
2021-05-26  3:00                           ` Dave Airlie
2021-05-26 18:29                           ` Bjorn Helgaas
2021-05-26 18:29                             ` Bjorn Helgaas

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