diff mbox series

[v13,02/22] PCI: Add PCI_HEADER_TYPE_MULTI_FUNC

Message ID 20230418122403.3178462-3-yoshihiro.shimoda.uh@renesas.com
State New
Headers show
Series PCI: rcar-gen4: Add R-Car Gen4 PCIe support | expand

Commit Message

Yoshihiro Shimoda April 18, 2023, 12:23 p.m. UTC 
Add PCI_HEADER_TYPE_MULTI_FUNC macro which is "Multi-Function Device"
of Header Type Register.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 drivers/pci/probe.c           | 2 +-
 drivers/pci/quirks.c          | 4 ++--
 include/uapi/linux/pci_regs.h | 1 +
 3 files changed, 4 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index f8191750f6b7..e695aa0385d0 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1836,7 +1836,7 @@  int pci_setup_device(struct pci_dev *dev)
 	dev->dev.parent = dev->bus->bridge;
 	dev->dev.bus = &pci_bus_type;
 	dev->hdr_type = hdr_type & 0x7f;
-	dev->multifunction = !!(hdr_type & 0x80);
+	dev->multifunction = !!(hdr_type & PCI_HEADER_TYPE_MULTI_FUNC);
 	dev->error_state = pci_channel_io_normal;
 	set_pcie_port_type(dev);
 
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 44cab813bf95..40998c574540 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1750,7 +1750,7 @@  static void quirk_jmicron_ata(struct pci_dev *pdev)
 	/* Update pdev accordingly */
 	pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr);
 	pdev->hdr_type = hdr & 0x7f;
-	pdev->multifunction = !!(hdr & 0x80);
+	pdev->multifunction = !!(hdr & PCI_HEADER_TYPE_MULTI_FUNC);
 
 	pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class);
 	pdev->class = class >> 8;
@@ -5554,7 +5554,7 @@  static void quirk_nvidia_hda(struct pci_dev *gpu)
 
 	/* The GPU becomes a multi-function device when the HDA is enabled */
 	pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type);
-	gpu->multifunction = !!(hdr_type & 0x80);
+	gpu->multifunction = !!(hdr_type & PCI_HEADER_TYPE_MULTI_FUNC);
 }
 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
 			       PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda);
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 5d48413ac28f..a302b67d2834 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -80,6 +80,7 @@ 
 #define  PCI_HEADER_TYPE_NORMAL		0
 #define  PCI_HEADER_TYPE_BRIDGE		1
 #define  PCI_HEADER_TYPE_CARDBUS	2
+#define  PCI_HEADER_TYPE_MULTI_FUNC	0x80
 
 #define PCI_BIST		0x0f	/* 8 bits */
 #define  PCI_BIST_CODE_MASK	0x0f	/* Return result */