x86: quark: Optimize MRC execution time

[platform/kernel/u-boot.git] / arch / x86 / include / asm / arch-quark / quark.h

diff --git a/arch/x86/include/asm/arch-quark/quark.h b/arch/x86/include/asm/arch-quark/quark.h
index c997928..1ce5693 100644 (file)
--- a/arch/x86/include/asm/arch-quark/quark.h
+++ b/arch/x86/include/asm/arch-quark/quark.h
@@ -89,6 +89,41 @@ struct quark_rcba {
        u16     d20d21_ir;
 };
 
+#include <asm/io.h>
+#include <asm/pci.h>
+
+/**
+ * qrk_pci_read_config_dword() - Read a configuration value
+ *
+ * @dev:       PCI device address: bus, device and function
+ * @offset:    Dword offset within the device's configuration space
+ * @valuep:    Place to put the returned value
+ *
+ * Note: This routine is inlined to provide better performance on Quark
+ */
+static inline void qrk_pci_read_config_dword(pci_dev_t dev, int offset,
+                                            u32 *valuep)
+{
+       outl(dev | offset | PCI_CFG_EN, PCI_REG_ADDR);
+       *valuep = inl(PCI_REG_DATA);
+}
+
+/**
+ * qrk_pci_write_config_dword() - Write a PCI configuration value
+ *
+ * @dev:       PCI device address: bus, device and function
+ * @offset:    Dword offset within the device's configuration space
+ * @value:     Value to write
+ *
+ * Note: This routine is inlined to provide better performance on Quark
+ */
+static inline void qrk_pci_write_config_dword(pci_dev_t dev, int offset,
+                                             u32 value)
+{
+       outl(dev | offset | PCI_CFG_EN, PCI_REG_ADDR);
+       outl(value, PCI_REG_DATA);
+}
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* _QUARK_H_ */