Arm port, NetBSD codebase stripped down, 32bit only support.

1 files changed, 321 insertions, 0 deletions

diff --git a/sys/arch/arm/footbridge/isa/isa_io.c b/sys/arch/arm/footbridge/isa/isa_io.c
new file mode 100644
index 00000000000..fbb1253c91f
--- /dev/null
+++ b/sys/arch/arm/footbridge/isa/isa_io.c
@@ -0,0 +1,321 @@
+/*	$OpenBSD: isa_io.c,v 1.1 2004/02/01 05:09:49 drahn Exp $	*/
+/*	$NetBSD: isa_io.c,v 1.2 2002/09/27 15:35:44 provos Exp $	*/
+
+/*
+ * Copyright 1997
+ * Digital Equipment Corporation. All rights reserved.
+ *
+ * This software is furnished under license and may be used and
+ * copied only in accordance with the following terms and conditions.
+ * Subject to these conditions, you may download, copy, install,
+ * use, modify and distribute this software in source and/or binary
+ * form. No title or ownership is transferred hereby.
+ *
+ * 1) Any source code used, modified or distributed must reproduce
+ *    and retain this copyright notice and list of conditions as
+ *    they appear in the source file.
+ *
+ * 2) No right is granted to use any trade name, trademark, or logo of
+ *    Digital Equipment Corporation. Neither the "Digital Equipment
+ *    Corporation" name nor any trademark or logo of Digital Equipment
+ *    Corporation may be used to endorse or promote products derived
+ *    from this software without the prior written permission of
+ *    Digital Equipment Corporation.
+ *
+ * 3) This software is provided "AS-IS" and any express or implied
+ *    warranties, including but not limited to, any implied warranties
+ *    of merchantability, fitness for a particular purpose, or
+ *    non-infringement are disclaimed. In no event shall DIGITAL be
+ *    liable for any damages whatsoever, and in particular, DIGITAL
+ *    shall not be liable for special, indirect, consequential, or
+ *    incidental damages or damages for lost profits, loss of
+ *    revenue or loss of use, whether such damages arise in contract,
+ *    negligence, tort, under statute, in equity, at law or otherwise,
+ *    even if advised of the possibility of such damage.
+ */
+
+/*
+ * bus_space I/O functions for isa
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <machine/bus.h>
+#include <machine/pio.h>
+#include <machine/isa_machdep.h>
+
+/* Proto types for all the bus_space structure functions */
+
+bs_protos(isa);
+bs_protos(bs_notimpl);
+
+/*
+ * Declare the isa bus space tags
+ * The IO and MEM structs are identical, except for the cookies,
+ * which contain the address space bases.
+ */
+
+/*
+ * NOTE: ASSEMBLY LANGUAGE RELIES ON THE COOKIE -- THE FIRST MEMBER OF 
+ *       THIS STRUCTURE -- TO BE THE VIRTUAL ADDRESS OF ISA/IO!
+ */
+struct bus_space isa_io_bs_tag = {
+	/* cookie */
+	NULL, /* initialized below */
+
+	/* mapping/unmapping */
+	isa_bs_map,
+	isa_bs_unmap,
+	isa_bs_subregion,
+
+	/* allocation/deallocation */
+	isa_bs_alloc,
+	isa_bs_free,
+
+	/* get kernel virtual address */
+	isa_bs_vaddr,
+
+	/* mmap bus space for userland */
+	bs_notimpl_bs_mmap,		/* XXX possible even? XXX */
+
+	/* barrier */
+	isa_bs_barrier,
+
+	/* read (single) */
+	isa_bs_r_1,
+	isa_bs_r_2,
+	isa_bs_r_4,
+	bs_notimpl_bs_r_8,
+
+	/* read multiple */
+	isa_bs_rm_1,
+	isa_bs_rm_2,
+	isa_bs_rm_4,
+	bs_notimpl_bs_rm_8,
+
+	/* read region */
+	isa_bs_rr_1,
+	isa_bs_rr_2,
+	isa_bs_rr_4,
+	bs_notimpl_bs_rr_8,
+
+	/* write (single) */
+	isa_bs_w_1,
+	isa_bs_w_2,
+	isa_bs_w_4,
+	bs_notimpl_bs_w_8,
+
+	/* write multiple */
+	isa_bs_wm_1,
+	isa_bs_wm_2,
+	isa_bs_wm_4,
+	bs_notimpl_bs_wm_8,
+
+	/* write region */
+	isa_bs_wr_1,
+	isa_bs_wr_2,
+	isa_bs_wr_4,
+	bs_notimpl_bs_wr_8,
+
+	/* set multiple */
+	bs_notimpl_bs_sm_1,
+	bs_notimpl_bs_sm_2,
+	bs_notimpl_bs_sm_4,
+	bs_notimpl_bs_sm_8,
+
+	/* set region */
+	bs_notimpl_bs_sr_1,
+	isa_bs_sr_2,
+	bs_notimpl_bs_sr_4,
+	bs_notimpl_bs_sr_8,
+
+	/* copy */
+	bs_notimpl_bs_c_1,
+	bs_notimpl_bs_c_2,
+	bs_notimpl_bs_c_4,
+	bs_notimpl_bs_c_8,
+};
+
+/*
+ * NOTE: ASSEMBLY LANGUAGE RELIES ON THE COOKIE -- THE FIRST MEMBER OF 
+ *       THIS STRUCTURE -- TO BE THE VIRTUAL ADDRESS OF ISA/MEMORY!
+ */
+struct bus_space isa_mem_bs_tag = {
+	/* cookie */
+        NULL, /* initialized below */
+
+	/* mapping/unmapping */
+	isa_bs_map,
+	isa_bs_unmap,
+	isa_bs_subregion,
+
+	/* allocation/deallocation */
+	isa_bs_alloc,
+	isa_bs_free,
+
+	/* get kernel virtual address */
+	isa_bs_vaddr,
+
+	/* mmap bus space for userland */
+	bs_notimpl_bs_mmap,		/* XXX open for now ... XXX */
+
+	/* barrier */
+	isa_bs_barrier,
+
+	/* read (single) */
+	isa_bs_r_1,
+	isa_bs_r_2,
+	isa_bs_r_4,
+	bs_notimpl_bs_r_8,
+
+	/* read multiple */
+	isa_bs_rm_1,
+	isa_bs_rm_2,
+	isa_bs_rm_4,
+	bs_notimpl_bs_rm_8,
+
+	/* read region */
+	isa_bs_rr_1,
+	isa_bs_rr_2,
+	isa_bs_rr_4,
+	bs_notimpl_bs_rr_8,
+
+	/* write (single) */
+	isa_bs_w_1,
+	isa_bs_w_2,
+	isa_bs_w_4,
+	bs_notimpl_bs_w_8,
+
+	/* write multiple */
+	isa_bs_wm_1,
+	isa_bs_wm_2,
+	isa_bs_wm_4,
+	bs_notimpl_bs_wm_8,
+
+	/* write region */
+	isa_bs_wr_1,
+	isa_bs_wr_2,
+	isa_bs_wr_4,
+	bs_notimpl_bs_wr_8,
+
+	/* set multiple */
+	bs_notimpl_bs_sm_1,
+	bs_notimpl_bs_sm_2,
+	bs_notimpl_bs_sm_4,
+	bs_notimpl_bs_sm_8,
+
+	/* set region */
+	bs_notimpl_bs_sr_1,
+	isa_bs_sr_2,
+	bs_notimpl_bs_sr_4,
+	bs_notimpl_bs_sr_8,
+
+	/* copy */
+	bs_notimpl_bs_c_1,
+	bs_notimpl_bs_c_2,
+	bs_notimpl_bs_c_4,
+	bs_notimpl_bs_c_8,
+};
+
+/* bus space functions */
+
+void
+isa_io_init(isa_io_addr, isa_mem_addr)
+	vm_offset_t isa_io_addr;
+	vm_offset_t isa_mem_addr;
+{
+	isa_io_bs_tag.bs_cookie = (void *)isa_io_addr;
+	isa_mem_bs_tag.bs_cookie = (void *)isa_mem_addr;
+}
+
+/*
+ * break the abstraction: sometimes, other parts of the system
+ * (e.g. X servers) need to map ISA space directly.  use these
+ * functions sparingly!
+ */
+vm_offset_t
+isa_io_data_vaddr(void)
+{
+	return (vm_offset_t)isa_io_bs_tag.bs_cookie;
+}
+
+vm_offset_t
+isa_mem_data_vaddr(void)
+{
+	return (vm_offset_t)isa_mem_bs_tag.bs_cookie;
+}
+
+int
+isa_bs_map(t, bpa, size, cacheable, bshp)
+	void *t;
+	bus_addr_t bpa;
+	bus_size_t size;
+	int cacheable;
+	bus_space_handle_t *bshp;
+{
+	*bshp = bpa + (bus_addr_t)t;
+	return(0);
+}
+
+void
+isa_bs_unmap(t, bsh, size)
+	void *t;
+	bus_space_handle_t bsh;
+	bus_size_t size;
+{
+	/* Nothing to do. */
+}
+
+int
+isa_bs_subregion(t, bsh, offset, size, nbshp)
+	void *t;
+	bus_space_handle_t bsh;
+	bus_size_t offset, size;
+	bus_space_handle_t *nbshp;
+{
+/*	printf("isa_subregion(tag=%p, bsh=%lx, off=%lx, sz=%lx)\n",
+	    t, bsh, offset, size);*/
+	*nbshp = bsh + offset;
+	return(0);
+}
+
+int
+isa_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
+    bpap, bshp)
+	void *t;
+	bus_addr_t rstart, rend;
+	bus_size_t size, alignment, boundary;
+	int cacheable;
+	bus_addr_t *bpap;
+	bus_space_handle_t *bshp;
+{
+	panic("isa_alloc(): Help!");
+}
+
+void    
+isa_bs_free(t, bsh, size)
+	void *t;
+	bus_space_handle_t bsh;
+	bus_size_t size;
+{
+	panic("isa_free(): Help!");
+}
+
+void *
+isa_bs_vaddr(t, bsh)
+	void *t;
+	bus_space_handle_t bsh;
+{
+
+	return ((void *)bsh);
+}
+
+void
+isa_bs_barrier(t, bsh, offset, len, flags)
+	void *t;
+	bus_space_handle_t bsh;
+	bus_size_t offset, len;
+	int flags;
+{
+	/* just return */
+}