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Message-Id: <20220928122539.15116-1-pali@kernel.org>
Date: Wed, 28 Sep 2022 14:25:39 +0200
From: Pali Rohár <pali@...nel.org>
To: Linus Walleij <linus.walleij@...aro.org>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Wilczyński <kw@...ux.com>,
Bjorn Helgaas <bhelgaas@...gle.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] PCI: ixp4xx: Use PCI_CONF1_ADDRESS() macro
Simplify pci-ixp4xx.c driver code and use new PCI_CONF1_ADDRESS() macro for
accessing PCI config space.
Signed-off-by: Pali Rohár <pali@...nel.org>
---
drivers/pci/controller/pci-ixp4xx.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/pci-ixp4xx.c b/drivers/pci/controller/pci-ixp4xx.c
index 654ac4a82beb..c83b5ae0b017 100644
--- a/drivers/pci/controller/pci-ixp4xx.c
+++ b/drivers/pci/controller/pci-ixp4xx.c
@@ -188,12 +188,13 @@ static u32 ixp4xx_config_addr(u8 bus_num, u16 devfn, int where)
/* Root bus is always 0 in this hardware */
if (bus_num == 0) {
/* type 0 */
- return BIT(32-PCI_SLOT(devfn)) | ((PCI_FUNC(devfn)) << 8) |
- (where & ~3);
+ return (PCI_CONF1_ADDRESS(0, 0, PCI_FUNC(devfn), where) &
+ ~PCI_CONF1_ENABLE) | BIT(32-PCI_SLOT(devfn));
} else {
/* type 1 */
- return (bus_num << 16) | ((PCI_SLOT(devfn)) << 11) |
- ((PCI_FUNC(devfn)) << 8) | (where & ~3) | 1;
+ return (PCI_CONF1_ADDRESS(bus_num, PCI_SLOT(devfn),
+ PCI_FUNC(devfn), where) &
+ ~PCI_CONF1_ENABLE) | 1;
}
}
--
2.20.1
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