By popular demand and peer pressure, check-in work in progress work to support

the Yeelong Lemote mips-based netbook. Kernel bits only for now, needs
polishing; most of this work done during h2k9 last month, although the
porting effort started earlier this year.

1 files changed, 187 insertions, 0 deletions

diff --git a/sys/arch/loongson/loongson/bus_space.c b/sys/arch/loongson/loongson/bus_space.c
new file mode 100644
index 00000000000..d29006d6dbf
--- /dev/null
+++ b/sys/arch/loongson/loongson/bus_space.c
@@ -0,0 +1,187 @@
+/*	$OpenBSD: bus_space.c,v 1.1.1.1 2009/12/11 17:05:08 miod Exp $ */
+
+/*
+ * Copyright (c) 2001-2003 Opsycon AB  (www.opsycon.se / www.opsycon.com)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+/*
+ * Simple generic bus access primitives.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <machine/bus.h>
+
+uint8_t
+generic_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
+{
+	return *(volatile uint8_t *)(h + o);
+}
+
+uint16_t
+generic_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
+{
+	return *(volatile uint16_t *)(h + o);
+}
+
+uint32_t
+generic_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
+{
+	return *(volatile uint32_t *)(h + o);
+}
+
+uint64_t
+generic_space_read_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o)
+{
+	return *(volatile uint64_t *)(h + o);
+}
+
+void
+generic_space_write_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
+    uint8_t v)
+{
+	*(volatile uint8_t *)(h + o) = v;
+}
+
+void
+generic_space_write_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
+    uint16_t v)
+{
+	*(volatile uint16_t *)(h + o) = v;
+}
+
+void
+generic_space_write_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
+    uint32_t v)
+{
+	*(volatile uint32_t *)(h + o) = v;
+}
+
+void
+generic_space_write_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o,
+    uint64_t v)
+{
+	*(volatile uint64_t *)(h + o) = v;
+}
+
+void
+generic_space_read_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
+    uint8_t *buf, bus_size_t len)
+{
+	volatile uint16_t *addr = (volatile uint16_t *)(h + o);
+	len >>= 1;
+	while (len-- != 0) {
+		*(uint16_t *)buf = *addr;
+		buf += 2;
+	}
+}
+
+void
+generic_space_write_raw_2(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
+    const uint8_t *buf, bus_size_t len)
+{
+	volatile uint16_t *addr = (volatile uint16_t *)(h + o);
+	len >>= 1;
+	while (len-- != 0) {
+		*addr = *(uint16_t *)buf;
+		buf += 2;
+	}
+}
+
+void
+generic_space_read_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
+    uint8_t *buf, bus_size_t len)
+{
+	volatile uint32_t *addr = (volatile uint32_t *)(h + o);
+	len >>= 2;
+	while (len-- != 0) {
+		*(uint32_t *)buf = *addr;
+		buf += 4;
+	}
+}
+
+void
+generic_space_write_raw_4(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
+    const uint8_t *buf, bus_size_t len)
+{
+	volatile uint32_t *addr = (volatile uint32_t *)(h + o);
+	len >>= 2;
+	while (len-- != 0) {
+		*addr = *(uint32_t *)buf;
+		buf += 4;
+	}
+}
+
+void
+generic_space_read_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
+    uint8_t *buf, bus_size_t len)
+{
+	volatile uint64_t *addr = (volatile uint64_t *)(h + o);
+	len >>= 3;
+	while (len-- != 0) {
+		*(uint64_t *)buf = *addr;
+		buf += 8;
+	}
+}
+
+void
+generic_space_write_raw_8(bus_space_tag_t t, bus_space_handle_t h, bus_addr_t o,
+    const uint8_t *buf, bus_size_t len)
+{
+	volatile uint64_t *addr = (volatile uint64_t *)(h + o);
+	len >>= 3;
+	while (len-- != 0) {
+		*addr = *(uint64_t *)buf;
+		buf += 8;
+	}
+}
+
+int
+generic_space_map(bus_space_tag_t t, bus_addr_t offs, bus_size_t size,
+    int flags, bus_space_handle_t *bshp)
+{
+	*bshp = t->bus_base + offs;
+	return 0;
+}
+
+void
+generic_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t size)
+{
+}
+
+int
+generic_space_region(bus_space_tag_t t, bus_space_handle_t bsh,
+    bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)
+{
+	*nbshp = bsh + offset;
+	return 0;
+}
+
+void *
+generic_space_vaddr(bus_space_tag_t t, bus_space_handle_t h)
+{
+	return (void *)h;
+}