device/pci_ops: Move common pci_mmio_cfg.h

It is expected that method of accessing PCI configuration
register space via memory-mapped region is arch-agnostic.

Change-Id: Ide6baa00d611953aeb324be0d3561f464395c5eb
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31305
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

1 files changed, 73 insertions, 0 deletions

diff --git a/src/include/device/pci_mmio_cfg.h b/src/include/device/pci_mmio_cfg.h
new file mode 100644
index 0000000000..2e2c19af48
--- /dev/null
+++ b/src/include/device/pci_mmio_cfg.h
@@ -0,0 +1,73 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _PCI_MMIO_CFG_H
+#define _PCI_MMIO_CFG_H
+
+#include <stdint.h>
+#include <arch/io.h>
+#include <device/pci_type.h>
+
+#define DEFAULT_PCIEXBAR	CONFIG_MMCONF_BASE_ADDRESS
+
+static __always_inline
+u8 pci_mmio_read_config8(pci_devfn_t dev, unsigned int where)
+{
+	void *addr;
+	addr = (void *)(uintptr_t)(DEFAULT_PCIEXBAR | dev | where);
+	return read8(addr);
+}
+
+static __always_inline
+u16 pci_mmio_read_config16(pci_devfn_t dev, unsigned int where)
+{
+	void *addr;
+	addr = (void *)(uintptr_t)(DEFAULT_PCIEXBAR | dev | (where & ~1));
+	return read16(addr);
+}
+
+static __always_inline
+u32 pci_mmio_read_config32(pci_devfn_t dev, unsigned int where)
+{
+	void *addr;
+	addr = (void *)(uintptr_t)(DEFAULT_PCIEXBAR | dev | (where & ~3));
+	return read32(addr);
+}
+
+static __always_inline
+void pci_mmio_write_config8(pci_devfn_t dev, unsigned int where, u8 value)
+{
+	void *addr;
+	addr = (void *)(uintptr_t)(DEFAULT_PCIEXBAR | dev | where);
+	write8(addr, value);
+}
+
+static __always_inline
+void pci_mmio_write_config16(pci_devfn_t dev, unsigned int where, u16 value)
+{
+	void *addr;
+	addr = (void *)(uintptr_t)(DEFAULT_PCIEXBAR | dev | (where & ~1));
+	write16(addr, value);
+}
+
+static __always_inline
+void pci_mmio_write_config32(pci_devfn_t dev, unsigned int where, u32 value)
+{
+	void *addr;
+	addr = (void *)(uintptr_t)(DEFAULT_PCIEXBAR | dev | (where & ~3));
+	write32(addr, value);
+}
+
+#endif /* _PCI_MMIO_CFG_H */