We have writel() for 4 bytes but still missing 2/1 bytes accessors.
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
---
lib/pci-host-generic.c | 12 ++++++++++++
lib/x86/asm/pci.h | 14 ++++++++++++++
2 files changed, 26 insertions(+)
diff --git a/lib/pci-host-generic.c b/lib/pci-host-generic.c
index be3f9e7..c04e4f5 100644
--- a/lib/pci-host-generic.c
+++ b/lib/pci-host-generic.c
@@ -291,6 +291,18 @@ u32 pci_config_readl(pcidevaddr_t dev, u8 off)
return readl(conf + off);
}
+void pci_config_writeb(pcidevaddr_t dev, u8 off, u8 val)
+{
+ void __iomem *conf = pci_get_dev_conf(pci_host_bridge, dev);
+ writeb(val, conf + off);
+}
+
+void pci_config_writew(pcidevaddr_t dev, u8 off, u16 val)
+{
+ void __iomem *conf = pci_get_dev_conf(pci_host_bridge, dev);
+ writew(val, conf + off);
+}
+
void pci_config_writel(pcidevaddr_t dev, u8 off, u32 val)
{
void __iomem *conf = pci_get_dev_conf(pci_host_bridge, dev);
diff --git a/lib/x86/asm/pci.h b/lib/x86/asm/pci.h
index 7384b91..abfe5d1 100644
--- a/lib/x86/asm/pci.h
+++ b/lib/x86/asm/pci.h
@@ -29,6 +29,20 @@ static inline uint32_t pci_config_readl(pcidevaddr_t dev, uint8_t reg)
return inl(0xCFC);
}
+static inline void pci_config_writeb(pcidevaddr_t dev, uint8_t reg,
+ uint8_t val)
+{
+ outl(PCI_CONF1_ADDRESS(dev, reg), 0xCF8);
+ outb(val, 0xCFC);
+}
+
+static inline void pci_config_writew(pcidevaddr_t dev, uint8_t reg,
+ uint32_t val)
+{
+ outl(PCI_CONF1_ADDRESS(dev, reg), 0xCF8);
+ outw(val, 0xCFC);
+}
+
static inline void pci_config_writel(pcidevaddr_t dev, uint8_t reg, uint32_t val)
{
outl(PCI_CONF1_ADDRESS(dev, reg), 0xCF8);
--
2.7.4
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