From: jsg <jsg@openbsd.org>
Date: Wed, 20 Mar 2024 02:44:57 +0000 (+0000)
Subject: start implementing io_mapping
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=347f24fdad5a0e9fa4c93173630ceb50b09b5a28;p=openbsd

start implementing io_mapping
---

diff --git a/sys/dev/pci/drm/include/linux/io-mapping.h b/sys/dev/pci/drm/include/linux/io-mapping.h
index 7a49ffef9da..87930d29761 100644
--- a/sys/dev/pci/drm/include/linux/io-mapping.h
+++ b/sys/dev/pci/drm/include/linux/io-mapping.h
@@ -3,4 +3,34 @@
 #ifndef _LINUX_IO_MAPPING_H
 #define _LINUX_IO_MAPPING_H
 
+#include <linux/types.h>
+
+struct io_mapping {
+	resource_size_t base;
+	unsigned long size;
+	void *iomem;
+};
+
+static inline void *
+io_mapping_map_wc(struct io_mapping *map, unsigned long off, unsigned long size)
+{
+	return ((uint8_t *)map->iomem + off);
+}
+
+static inline void
+io_mapping_unmap(void *va)
+{
+}
+
+static inline void *
+io_mapping_map_local_wc(struct io_mapping *map, unsigned long off)
+{
+	return ((uint8_t *)map->iomem + off);
+}
+
+static inline void
+io_mapping_unmap_local(void *va)
+{
+}
+
 #endif