device/pci_ops: Apply some symmetry in headers

To make PCI driver side arch-agnostic, function
declarations have to be in symmetrical header
file locations.

From the driver side, the correct file to include
is now <device/pci_ops.h>

Change-Id: I8076a4867fd7472beaae0a021dcf0d9c7c905871
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31306
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/arch/x86/include/arch/io.h

@@ -203,67 +203,14 @@ static __always_inline void write64(volatile void *addr,
 }
 #endif
 
+/* FIXME: We should avoid this indirect include. Also this has to
+ * appear here after all MMIO and IO read/write functions. */
+#include <arch/pci_ops.h>
+
 #ifdef __SIMPLE_DEVICE__
 
 #define PNP_DEV(PORT, FUNC) (((PORT) << 8) | (FUNC))
 
-#include <arch/pci_io_cfg.h>
-#include <device/pci_mmio_cfg.h>
-
-static __always_inline
-uint8_t pci_read_config8(pci_devfn_t dev, unsigned int where)
-{
-	if (IS_ENABLED(CONFIG_MMCONF_SUPPORT))
-		return pci_mmio_read_config8(dev, where);
-	else
-		return pci_io_read_config8(dev, where);
-}
-
-static __always_inline
-uint16_t pci_read_config16(pci_devfn_t dev, unsigned int where)
-{
-	if (IS_ENABLED(CONFIG_MMCONF_SUPPORT))
-		return pci_mmio_read_config16(dev, where);
-	else
-		return pci_io_read_config16(dev, where);
-}
-
-static __always_inline
-uint32_t pci_read_config32(pci_devfn_t dev, unsigned int where)
-{
-	if (IS_ENABLED(CONFIG_MMCONF_SUPPORT))
-		return pci_mmio_read_config32(dev, where);
-	else
-		return pci_io_read_config32(dev, where);
-}
-
-static __always_inline
-void pci_write_config8(pci_devfn_t dev, unsigned int where, uint8_t value)
-{
-	if (IS_ENABLED(CONFIG_MMCONF_SUPPORT))
-		pci_mmio_write_config8(dev, where, value);
-	else
-		pci_io_write_config8(dev, where, value);
-}
-
-static __always_inline
-void pci_write_config16(pci_devfn_t dev, unsigned int where, uint16_t value)
-{
-	if (IS_ENABLED(CONFIG_MMCONF_SUPPORT))
-		pci_mmio_write_config16(dev, where, value);
-	else
-		pci_io_write_config16(dev, where, value);
-}
-
-static __always_inline
-void pci_write_config32(pci_devfn_t dev, unsigned int where, uint32_t value)
-{
-	if (IS_ENABLED(CONFIG_MMCONF_SUPPORT))
-		pci_mmio_write_config32(dev, where, value);
-	else
-		pci_io_write_config32(dev, where, value);
-}
-
 /* Generic functions for pnp devices */
 static __always_inline void pnp_write_config(
 	pnp_devfn_t dev, uint8_t reg, uint8_t value)

src/arch/x86/include/arch/pci_io_cfg.h

@@ -14,7 +14,9 @@
 #ifndef _PCI_IO_CFG_H
 #define _PCI_IO_CFG_H
 
+#include <stdint.h>
 #include <arch/io.h>
+#include <device/pci_type.h>
 
 static __always_inline
 unsigned int pci_io_encode_addr(pci_devfn_t dev, unsigned int where)
@@ -75,4 +77,44 @@ void pci_io_write_config32(pci_devfn_t dev, unsigned int where, uint32_t value)
 	outl(value, 0xCFC);
 }
 
+#if !IS_ENABLED(CONFIG_MMCONF_SUPPORT)
+#ifdef __SIMPLE_DEVICE__
+static __always_inline
+uint8_t pci_read_config8(pci_devfn_t dev, unsigned int where)
+{
+	return pci_io_read_config8(dev, where);
+}
+
+static __always_inline
+uint16_t pci_read_config16(pci_devfn_t dev, unsigned int where)
+{
+	return pci_io_read_config16(dev, where);
+}
+
+static __always_inline
+uint32_t pci_read_config32(pci_devfn_t dev, unsigned int where)
+{
+	return pci_io_read_config32(dev, where);
+}
+
+static __always_inline
+void pci_write_config8(pci_devfn_t dev, unsigned int where, uint8_t value)
+{
+	pci_io_write_config8(dev, where, value);
+}
+
+static __always_inline
+void pci_write_config16(pci_devfn_t dev, unsigned int where, uint16_t value)
+{
+	pci_io_write_config16(dev, where, value);
+}
+
+static __always_inline
+void pci_write_config32(pci_devfn_t dev, unsigned int where, uint32_t value)
+{
+	pci_io_write_config32(dev, where, value);
+}
+#endif /* __SIMPLE_DEVICE__ */
+#endif
+
 #endif /* _PCI_IO_CFG_H */

src/arch/x86/include/arch/pci_ops.h

@@ -14,6 +14,9 @@
 #ifndef ARCH_I386_PCI_OPS_H
 #define ARCH_I386_PCI_OPS_H
 
+#include <arch/pci_io_cfg.h>
+#include <device/pci_mmio_cfg.h>
+
 #ifndef __SIMPLE_DEVICE__
 
 extern const struct pci_bus_operations pci_cf8_conf1;

src/device/pci_early.c

@@ -15,7 +15,6 @@
 
 #define __SIMPLE_DEVICE__
 
-#include <arch/io.h>
 #include <device/pci.h>
 #include <device/pci_def.h>
 #include <device/pci_ops.h>

src/include/device/pci_mmio_cfg.h

@@ -70,4 +70,46 @@ void pci_mmio_write_config32(pci_devfn_t dev, unsigned int where, u32 value)
 	write32(addr, value);
 }
 
+#if IS_ENABLED(CONFIG_MMCONF_SUPPORT)
+
+#ifdef __SIMPLE_DEVICE__
+static __always_inline
+uint8_t pci_read_config8(pci_devfn_t dev, unsigned int where)
+{
+	return pci_mmio_read_config8(dev, where);
+}
+
+static __always_inline
+uint16_t pci_read_config16(pci_devfn_t dev, unsigned int where)
+{
+	return pci_mmio_read_config16(dev, where);
+}
+
+static __always_inline
+uint32_t pci_read_config32(pci_devfn_t dev, unsigned int where)
+{
+	return pci_mmio_read_config32(dev, where);
+}
+
+static __always_inline
+void pci_write_config8(pci_devfn_t dev, unsigned int where, uint8_t value)
+{
+	pci_mmio_write_config8(dev, where, value);
+}
+
+static __always_inline
+void pci_write_config16(pci_devfn_t dev, unsigned int where, uint16_t value)
+{
+	pci_mmio_write_config16(dev, where, value);
+}
+
+static __always_inline
+void pci_write_config32(pci_devfn_t dev, unsigned int where, uint32_t value)
+{
+	pci_mmio_write_config32(dev, where, value);
+}
+#endif /* __SIMPLE_DEVICE__ */
+
+#endif
+
 #endif /* _PCI_MMIO_CFG_H */