some dma embrios

1 files changed, 229 insertions, 0 deletions

diff --git a/sys/arch/hppa/hppa/dma.c b/sys/arch/hppa/hppa/dma.c
new file mode 100644
index 00000000000..fb65ff69628
--- /dev/null
+++ b/sys/arch/hppa/hppa/dma.c
@@ -0,0 +1,229 @@
+/*	$OpenBSD: dma.c,v 1.1 1999/05/05 03:06:07 mickey Exp $	*/
+
+/*
+ * Copyright (c) 1998 Michael Shalayeff
+ * All rights reserved.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Michael Shalayeff.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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.
+ */
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/extent.h>
+#include <sys/buf.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/file.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/mount.h>
+
+#include <vm/vm.h>
+#include <vm/vm_kern.h>
+#include <uvm/uvm.h>
+#include <uvm/uvm_page.h>
+
+#include <machine/bus.h>
+
+int
+_dmamap_create(v, size, nsegments, maxsegsz, boundary, flags, dmamp)
+	void *v;
+	bus_size_t size;
+	int nsegments;
+	bus_size_t maxsegsz;
+	bus_size_t boundary;
+	int flags;
+	bus_dmamap_t *dmamp;
+{
+	register struct hppa_bus_dmamap *map;
+	register size_t mapsize;
+
+	mapsize = sizeof(struct hppa_bus_dmamap) +
+	    (sizeof(bus_dma_segment_t) * (nsegments - 1));
+	MALLOC(map, struct hppa_bus_dmamap *, mapsize, M_DEVBUF,
+		(flags & BUS_DMA_NOWAIT) ? M_NOWAIT : M_WAITOK);
+	if (!map)
+		return (ENOMEM);
+
+	bzero(map, mapsize);
+	map->_dm_size = size;
+	map->_dm_segcnt = nsegments;
+	map->_dm_maxsegsz = maxsegsz;
+	map->_dm_boundary = boundary;
+	map->_dm_flags = flags & ~(BUS_DMA_WAITOK|BUS_DMA_NOWAIT);
+
+	*dmamp = map;
+	return (0);
+}
+
+void
+_dmamap_destroy(v, map)
+	void *v;
+	bus_dmamap_t map;
+{
+	free(map, M_DEVBUF);
+}
+
+int
+_dmamap_load(v, map, addr, size, p, flags)
+	void *v;
+	bus_dmamap_t map;
+	void *addr;
+	bus_size_t size;
+	struct proc *p;
+	int flags;
+{
+	panic("_dmamap_load: not implemented");
+}
+
+int
+_dmamap_load_mbuf(v, map, m, flags)
+	void *v;
+	bus_dmamap_t map;
+	struct mbuf *m;
+	int flags;
+{
+	panic("_dmamap_load_mbuf: not implemented");
+}
+
+int
+_dmamap_load_uio(v, map, uio, flags)
+	void *v;
+	bus_dmamap_t map;
+	struct uio *uio;
+	int flags;
+{
+	panic("_dmamap_load_uio: not implemented");
+}
+
+int
+_dmamap_load_raw(v, map, segs, nsegs, size, flags)
+	void *v;
+	bus_dmamap_t map;
+	bus_dma_segment_t *segs;
+	int nsegs;
+	bus_size_t size;
+	int flags;
+{
+	panic("_dmamap_load_raw: not implemented");
+}
+
+void
+_dmamap_unload(v, map)
+	void *v;
+	bus_dmamap_t map;
+{
+	panic("_dmamap_unload: not implemented");
+}
+
+void
+_dmamap_sync(v, map, ops)
+	void *v;
+	bus_dmamap_t map;
+	bus_dmasync_op_t ops;
+{
+	__asm __volatile ("syncdma");
+}
+
+int
+_dmamem_alloc(v, size, alignment, boundary, segs, nsegs, rsegs, flags)
+	void *v;
+	bus_size_t size, alignment, boundary;
+	bus_dma_segment_t *segs;
+	int nsegs;
+	int *rsegs;
+	int flags;
+{
+	vm_offset_t va, spa, epa;
+
+	size = round_page(size);
+
+	if (!(va = uvm_km_kmemalloc(kmem_map, uvmexp.kmem_object, size, 0)))
+		return (ENOMEM);
+
+	segs[0].ds_addr = va;
+	segs[0].ds_len = size;
+	*rsegs = 1;
+
+	for (epa = size + (spa = kvtop((caddr_t)va)); spa < epa;
+	     spa += NBPG, va += NBPG) {
+		pmap_enter(pmap_kernel(), va, spa,
+			   VM_PROT_READ | VM_PROT_WRITE, TRUE);
+		pmap_changebit(spa, TLB_UNCACHEABLE, 0);
+	}
+
+	return 0;
+
+}
+
+void
+_dmamem_free(v, segs, nsegs)
+	void *v;
+	bus_dma_segment_t *segs;
+	int nsegs;
+{
+	uvm_km_free(kmem_map, segs[0].ds_addr, M_DEVBUF);
+}
+
+int
+_dmamem_map(v, segs, nsegs, size, kvap, flags)
+	void *v;
+	bus_dma_segment_t *segs;
+	int nsegs;
+	size_t size;
+	caddr_t *kvap;
+	int flags;
+{
+	*kvap = (caddr_t)segs[0].ds_addr;
+	return 0;
+}
+
+void
+_dmamem_unmap(v, kva, size)
+	void *v;
+	caddr_t kva;
+	size_t size;
+{
+}
+
+int
+_dmamem_mmap(v, segs, nsegs, off, prot, flags)
+	void *v;
+	bus_dma_segment_t *segs;
+	int nsegs, off, prot, flags;
+{
+	panic("_dmamem_mmap: not implemented");
+}
+
+int
+dma_cachectl(p, size)
+	caddr_t p;
+	int size;
+{
+	return 0;
+}