Module Name: src
Committed By: snj
Date: Tue Jul 25 02:15:20 UTC 2017
Modified Files:
src/sys/arch/pmax/conf [netbsd-8]: files.pmax
src/sys/arch/pmax/include [netbsd-8]: bus.h
Log Message:
Apply patch (requested by flxd in ticket #154):
Revert pmax switch to common MIPS bus_space and bus_dma.
To generate a diff of this commit:
cvs rdiff -u -r1.118 -r1.118.8.1 src/sys/arch/pmax/conf/files.pmax
cvs rdiff -u -r1.31 -r1.31.8.1 src/sys/arch/pmax/include/bus.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/pmax/conf/files.pmax
diff -u src/sys/arch/pmax/conf/files.pmax:1.118 src/sys/arch/pmax/conf/files.pmax:1.118.8.1
--- src/sys/arch/pmax/conf/files.pmax:1.118 Wed Nov 16 19:37:06 2016
+++ src/sys/arch/pmax/conf/files.pmax Tue Jul 25 02:15:19 2017
@@ -1,4 +1,4 @@
-# $NetBSD: files.pmax,v 1.118 2016/11/16 19:37:06 macallan Exp $
+# $NetBSD: files.pmax,v 1.118.8.1 2017/07/25 02:15:19 snj Exp $
# DECstation-specific configuration info
# maxpartitions must be first item in files.${ARCH}.
@@ -16,12 +16,6 @@ device cpu # not optional
attach cpu at mainbus
file arch/pmax/pmax/cpu.c cpu
-#
-# common mips stuff
-#
-file arch/mips/mips/bus_dma.c
-
-
# Model support option headers
defflag DEC_3100 # DECstation 2100, 3100 (kn01)
defflag DEC_5100 # DECsystem 5100 (kn230)
@@ -128,7 +122,8 @@ attach le at ibus with le_pmax: le24, l
file arch/pmax/ibus/if_le_ibus.c le_pmax
file arch/pmax/pmax/autoconf.c
-file arch/pmax/pmax/bus.c
+file arch/pmax/pmax/bus_dma.c
+file arch/pmax/pmax/bus_space.c
file arch/pmax/pmax/disksubr.c
file arch/pmax/pmax/machdep.c
file arch/pmax/pmax/mainbus.c
@@ -138,6 +133,7 @@ file arch/pmax/pmax/sysconf.c
file arch/pmax/stand/common/callvec.c
file dev/cons.c
+file dev/bus_dma/bus_dmamem_common.c
#
# Workstation console devices
Index: src/sys/arch/pmax/include/bus.h
diff -u src/sys/arch/pmax/include/bus.h:1.31 src/sys/arch/pmax/include/bus.h:1.31.8.1
--- src/sys/arch/pmax/include/bus.h:1.31 Wed Nov 16 19:37:06 2016
+++ src/sys/arch/pmax/include/bus.h Tue Jul 25 02:15:20 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: bus.h,v 1.31 2016/11/16 19:37:06 macallan Exp $ */
+/* $NetBSD: bus.h,v 1.31.8.1 2017/07/25 02:15:20 snj Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
@@ -41,13 +41,629 @@
#define __PB_TYPENAME_PREFIX(BITS) ___CONCAT(u_int,BITS)
#define __PB_TYPENAME(BITS) ___CONCAT(__PB_TYPENAME_PREFIX(BITS),_t)
-#include <mips/bus_space_defs.h>
-#include <mips/bus_space_funcs.h>
-#include <mips/bus_dma_defs.h>
-#include <mips/bus_dma_funcs.h>
-
-void pmax_bus_dma_init(void);
-extern bus_space_tag_t normal_memt;
-extern struct mips_bus_dma_tag pmax_default_bus_dma_tag;
+/*
+ * Bus address and size types
+ */
+typedef u_long bus_addr_t;
+typedef u_long bus_size_t;
+
+/*
+ * Access methods for bus resources and address space.
+ */
+typedef int bus_space_tag_t;
+typedef u_long bus_space_handle_t;
+
+/*
+ * int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
+ * bus_size_t size, int flags, bus_space_handle_t *bshp);
+ *
+ * Map a region of bus space.
+ */
+
+#define BUS_SPACE_MAP_CACHEABLE 0x01
+#define BUS_SPACE_MAP_LINEAR 0x02
+#define BUS_SPACE_MAP_PREFETCHABLE 0x04
+
+int bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t,
+ int, bus_space_handle_t *);
+
+/*
+ * void bus_space_unmap(bus_space_tag_t t,
+ * bus_space_handle_t bsh, bus_size_t size);
+ *
+ * Unmap a region of bus space.
+ */
+
+void bus_space_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t);
+
+/*
+ * int bus_space_subregion(bus_space_tag_t t,
+ * bus_space_handle_t bsh, bus_size_t offset, bus_size_t size,
+ * bus_space_handle_t *nbshp);
+ *
+ * Get a new handle for a subregion of an already-mapped area of bus space.
+ */
+
+int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
+ bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp);
+
+/*
+ * int bus_space_alloc(bus_space_tag_t t, bus_addr_t, rstart,
+ * bus_addr_t rend, bus_size_t size, bus_size_t align,
+ * bus_size_t boundary, int flags, bus_addr_t *addrp,
+ * bus_space_handle_t *bshp);
+ *
+ * Allocate a region of bus space.
+ */
+
+int bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart,
+ bus_addr_t rend, bus_size_t size, bus_size_t align,
+ bus_size_t boundary, int cacheable, bus_addr_t *addrp,
+ bus_space_handle_t *bshp);
+
+/*
+ * int bus_space_free(bus_space_tag_t t,
+ * bus_space_handle_t bsh, bus_size_t size);
+ *
+ * Free a region of bus space.
+ */
+
+void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh,
+ bus_size_t size);
+
+/*
+ * void *bus_space_vaddr(bus_space_tag_t, bus_space_handle_t);
+ *
+ * Get the kernel virtual address for the mapped bus space.
+ * Only allowed for regions mapped with BUS_SPACE_MAP_LINEAR.
+ * (XXX not enforced)
+ */
+#define bus_space_vaddr(t, h) \
+ ((void *)(h))
+
+/*
+ * u_intN_t bus_space_read_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset);
+ *
+ * Read a 1, 2, 4, or 8 byte quantity from bus space
+ * described by tag/handle/offset.
+ */
+
+#define bus_space_read_1(t, h, o) \
+ ((void) t, (*(volatile u_int8_t *)((h) + (o))))
+
+#define bus_space_read_2(t, h, o) \
+ ((void) t, (*(volatile u_int16_t *)((h) + (o))))
+
+#define bus_space_read_4(t, h, o) \
+ ((void) t, (*(volatile uint32_t *)((h) + (o))))
+
+#if 0 /* Cause a link error for bus_space_read_8 */
+#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
+#endif
+
+/*
+ * void bus_space_read_multi_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset,
+ * u_intN_t *addr, size_t count);
+ *
+ * Read `count' 1, 2, 4, or 8 byte quantities from bus space
+ * described by tag/handle/offset and copy into buffer provided.
+ */
+
+#define __PMAX_bus_space_read_multi(BYTES,BITS) \
+static __inline void __CONCAT(bus_space_read_multi_,BYTES) \
+ (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
+ __PB_TYPENAME(BITS) *, size_t); \
+ \
+static __inline void \
+__CONCAT(bus_space_read_multi_,BYTES)( \
+ bus_space_tag_t t, \
+ bus_space_handle_t h, \
+ bus_size_t o, \
+ __PB_TYPENAME(BITS) *a, \
+ size_t c) \
+{ \
+ \
+ while (c--) \
+ *a++ = __CONCAT(bus_space_read_,BYTES)(t, h, o); \
+}
+
+__PMAX_bus_space_read_multi(1,8)
+__PMAX_bus_space_read_multi(2,16)
+__PMAX_bus_space_read_multi(4,32)
+
+#if 0 /* Cause a link error for bus_space_read_multi_8 */
+#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
+#endif
+
+#undef __PMAX_bus_space_read_multi
+
+/*
+ * void bus_space_read_region_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset,
+ * u_intN_t *addr, size_t count);
+ *
+ * Read `count' 1, 2, 4, or 8 byte quantities from bus space
+ * described by tag/handle and starting at `offset' and copy into
+ * buffer provided.
+ */
+
+#define __PMAX_bus_space_read_region(BYTES,BITS) \
+static __inline void __CONCAT(bus_space_read_region_,BYTES) \
+ (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
+ __PB_TYPENAME(BITS) *, size_t); \
+ \
+static __inline void \
+__CONCAT(bus_space_read_region_,BYTES)( \
+ bus_space_tag_t t, \
+ bus_space_handle_t h, \
+ bus_size_t o, \
+ __PB_TYPENAME(BITS) *a, \
+ size_t c) \
+{ \
+ \
+ while (c--) { \
+ *a++ = __CONCAT(bus_space_read_,BYTES)(t, h, o); \
+ o += BYTES; \
+ } \
+}
+
+__PMAX_bus_space_read_region(1,8)
+__PMAX_bus_space_read_region(2,16)
+__PMAX_bus_space_read_region(4,32)
+
+#if 0 /* Cause a link error for bus_space_read_region_8 */
+#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
+#endif
+
+#undef __PMAX_bus_space_read_region
+
+/*
+ * void bus_space_write_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset,
+ * u_intN_t value);
+ *
+ * Write the 1, 2, 4, or 8 byte value `value' to bus space
+ * described by tag/handle/offset.
+ */
+
+#define bus_space_write_1(t, h, o, v) \
+do { \
+ (void) t; \
+ *(volatile uint8_t *)((h) + (o)) = (v); \
+ wbflush(); /* XXX */ \
+} while (0)
+
+#define bus_space_write_2(t, h, o, v) \
+do { \
+ (void) t; \
+ *(volatile uint16_t *)((h) + (o)) = (v); \
+ wbflush(); /* XXX */ \
+} while (0)
+
+#define bus_space_write_4(t, h, o, v) \
+do { \
+ (void) t; \
+ *(volatile uint32_t *)((h) + (o)) = (v); \
+ wbflush(); /* XXX */ \
+} while (0)
+
+#if 0 /* Cause a link error for bus_space_write_8 */
+#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
+#endif
+
+/*
+ * void bus_space_write_multi_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset,
+ * const u_intN_t *addr, size_t count);
+ *
+ * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
+ * provided to bus space described by tag/handle/offset.
+ */
+
+#define __PMAX_bus_space_write_multi(BYTES,BITS) \
+static __inline void __CONCAT(bus_space_write_multi_,BYTES) \
+ (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
+ __PB_TYPENAME(BITS) *, size_t); \
+ \
+static __inline void \
+__CONCAT(bus_space_write_multi_,BYTES)( \
+ bus_space_tag_t t, \
+ bus_space_handle_t h, \
+ bus_size_t o, \
+ __PB_TYPENAME(BITS) *a, \
+ size_t c) \
+{ \
+ \
+ while (c--) \
+ __CONCAT(bus_space_write_,BYTES)(t, h, o, *a++); \
+}
+
+__PMAX_bus_space_write_multi(1,8)
+__PMAX_bus_space_write_multi(2,16)
+__PMAX_bus_space_write_multi(4,32)
+
+#if 0 /* Cause a link error for bus_space_write_8 */
+#define bus_space_write_multi_8(t, h, o, a, c) \
+ !!! bus_space_write_multi_8 unimplimented !!!
+#endif
+
+#undef __PMAX_bus_space_write_multi
+
+/*
+ * void bus_space_write_region_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset,
+ * const u_intN_t *addr, size_t count);
+ *
+ * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
+ * to bus space described by tag/handle starting at `offset'.
+ */
+
+#define __PMAX_bus_space_write_region(BYTES,BITS) \
+static __inline void __CONCAT(bus_space_write_region_,BYTES) \
+ (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
+ __PB_TYPENAME(BITS) *, size_t); \
+ \
+static __inline void \
+__CONCAT(bus_space_write_region_,BYTES)( \
+ bus_space_tag_t t, \
+ bus_space_handle_t h, \
+ bus_size_t o, \
+ __PB_TYPENAME(BITS) *a, \
+ size_t c) \
+{ \
+ \
+ while (c--) { \
+ __CONCAT(bus_space_write_,BYTES)(t, h, o, *a++); \
+ o += BYTES; \
+ } \
+}
+
+__PMAX_bus_space_write_region(1,8)
+__PMAX_bus_space_write_region(2,16)
+__PMAX_bus_space_write_region(4,32)
+
+#if 0 /* Cause a link error for bus_space_write_region_8 */
+#define bus_space_write_region_8 \
+ !!! bus_space_write_region_8 unimplemented !!!
+#endif
+
+#undef __PMAX_bus_space_write_region
+
+/*
+ * void bus_space_set_multi_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
+ * size_t count);
+ *
+ * Write the 1, 2, 4, or 8 byte value `val' to bus space described
+ * by tag/handle/offset `count' times.
+ */
+
+#define __PMAX_bus_space_set_multi(BYTES,BITS) \
+static __inline void __CONCAT(bus_space_set_multi_,BYTES) \
+ (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
+ __PB_TYPENAME(BITS), size_t); \
+ \
+static __inline void \
+__CONCAT(bus_space_set_multi_,BYTES)( \
+ bus_space_tag_t t, \
+ bus_space_handle_t h, \
+ bus_size_t o, \
+ __PB_TYPENAME(BITS) v, \
+ size_t c) \
+{ \
+ \
+ while (c--) \
+ __CONCAT(bus_space_write_,BYTES)(t, h, o, v); \
+}
+
+__PMAX_bus_space_set_multi(1,8)
+__PMAX_bus_space_set_multi(2,16)
+__PMAX_bus_space_set_multi(4,32)
+
+#if 0 /* Cause a link error for bus_space_set_multi_8 */
+#define bus_space_set_multi_8 \
+ !!! bus_space_set_multi_8 unimplemented !!!
+#endif
+
+#undef __PMAX_bus_space_set_multi
+
+/*
+ * void bus_space_set_region_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
+ * size_t count);
+ *
+ * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
+ * by tag/handle starting at `offset'.
+ */
+
+#define __PMAX_bus_space_set_region(BYTES,BITS) \
+static __inline void __CONCAT(bus_space_set_region_,BYTES) \
+ (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
+ __PB_TYPENAME(BITS), size_t); \
+ \
+static __inline void \
+__CONCAT(bus_space_set_region_,BYTES)( \
+ bus_space_tag_t t, \
+ bus_space_handle_t h, \
+ bus_size_t o, \
+ __PB_TYPENAME(BITS) v, \
+ size_t c) \
+{ \
+ \
+ while (c--) { \
+ __CONCAT(bus_space_write_,BYTES)(t, h, o, v); \
+ o += BYTES; \
+ } \
+}
+
+__PMAX_bus_space_set_region(1,8)
+__PMAX_bus_space_set_region(2,16)
+__PMAX_bus_space_set_region(4,32)
+
+#if 0 /* Cause a link error for bus_space_set_region_8 */
+#define bus_space_set_region_8 \
+ !!! bus_space_set_region_8 unimplemented !!!
+#endif
+
+#undef __PMAX_bus_space_set_region
+
+/*
+ * void bus_space_copy_region_N(bus_space_tag_t tag,
+ * bus_space_handle_t bsh1, bus_size_t off1,
+ * bus_space_handle_t bsh2, bus_size_t off2,
+ * bus_size_t count);
+ *
+ * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
+ * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
+ */
+
+#define __PMAX_copy_region(BYTES) \
+static __inline void __CONCAT(bus_space_copy_region_,BYTES) \
+ (bus_space_tag_t, \
+ bus_space_handle_t bsh1, bus_size_t off1, \
+ bus_space_handle_t bsh2, bus_size_t off2, \
+ bus_size_t count); \
+ \
+static __inline void \
+__CONCAT(bus_space_copy_region_,BYTES)( \
+ bus_space_tag_t t, \
+ bus_space_handle_t h1, bus_size_t o1, \
+ bus_space_handle_t h2, bus_size_t o2, \
+ bus_size_t c) \
+{ \
+ bus_size_t o; \
+ \
+ if ((h1 + o1) >= (h2 + o2)) { \
+ /* src after dest: copy forward */ \
+ for (o = 0; c != 0; c--, o += BYTES) \
+ __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
+ __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
+ } else { \
+ /* dest after src: copy backwards */ \
+ for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \
+ __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
+ __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
+ } \
+}
+
+__PMAX_copy_region(1)
+__PMAX_copy_region(2)
+__PMAX_copy_region(4)
+
+#if 0 /* Cause a link error for bus_space_copy_region_8 */
+#define bus_space_copy_region_8 \
+ !!! bus_space_copy_region_8 unimplemented !!!
+#endif
+
+#undef __PMAX_copy_region
+
+/*
+ * Bus read/write barrier methods.
+ *
+ * void bus_space_barrier(bus_space_tag_t tag,
+ * bus_space_handle_t bsh, bus_size_t offset,
+ * bus_size_t len, int flags);
+ *
+ * On the MIPS, we just flush the write buffer.
+ */
+#define bus_space_barrier(t, h, o, l, f) \
+ ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f), \
+ wbflush()))
+#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
+#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
+
+#undef __PB_TYPENAME_PREFIX
+#undef __PB_TYPENAME
+
+#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
+
+/*
+ * Flags used in various bus DMA methods.
+ */
+#define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */
+#define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */
+#define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */
+#define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */
+#define BUS_DMA_STREAMING 0x008 /* hint: sequential, unidirectional */
+#define BUS_DMA_BUS1 0x010 /* placeholders for bus functions... */
+#define BUS_DMA_BUS2 0x020
+#define BUS_DMA_BUS3 0x040
+#define BUS_DMA_BUS4 0x080
+#define BUS_DMA_READ 0x100 /* mapping is device -> memory only */
+#define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */
+#define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */
+
+#define PMAX_DMAMAP_COHERENT 0x10000 /* no cache flush necessary on sync */
+
+/* Forwards needed by prototypes below. */
+struct mbuf;
+struct uio;
+
+/*
+ * Operations performed by bus_dmamap_sync().
+ */
+#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
+#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
+#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
+#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
+
+typedef struct pmax_bus_dma_tag *bus_dma_tag_t;
+typedef struct pmax_bus_dmamap *bus_dmamap_t;
+
+#define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0)
+
+/*
+ * bus_dma_segment_t
+ *
+ * Describes a single contiguous DMA transaction. Values
+ * are suitable for programming into DMA registers.
+ */
+struct pmax_bus_dma_segment {
+ bus_addr_t ds_addr; /* DMA address */
+ bus_size_t ds_len; /* length of transfer */
+ bus_addr_t _ds_vaddr; /* virtual address, 0 if invalid */
+};
+typedef struct pmax_bus_dma_segment bus_dma_segment_t;
+
+/*
+ * bus_dma_tag_t
+ *
+ * A machine-dependent opaque type describing the implementation of
+ * DMA for a given bus.
+ */
+
+struct pmax_bus_dma_tag {
+ /*
+ * DMA mapping methods.
+ */
+ int (*_dmamap_create)(bus_dma_tag_t, bus_size_t, int,
+ bus_size_t, bus_size_t, int, bus_dmamap_t *);
+ void (*_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t);
+ int (*_dmamap_load)(bus_dma_tag_t, bus_dmamap_t, void *,
+ bus_size_t, struct proc *, int);
+ int (*_dmamap_load_mbuf)(bus_dma_tag_t, bus_dmamap_t,
+ struct mbuf *, int);
+ int (*_dmamap_load_uio)(bus_dma_tag_t, bus_dmamap_t,
+ struct uio *, int);
+ int (*_dmamap_load_raw)(bus_dma_tag_t, bus_dmamap_t,
+ bus_dma_segment_t *, int, bus_size_t, int);
+ void (*_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t);
+ void (*_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t,
+ bus_addr_t, bus_size_t, int);
+
+ /*
+ * DMA memory utility functions.
+ */
+ int (*_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t,
+ bus_size_t, bus_dma_segment_t *, int, int *, int);
+ void (*_dmamem_free)(bus_dma_tag_t,
+ bus_dma_segment_t *, int);
+ int (*_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *,
+ int, size_t, void **, int);
+ void (*_dmamem_unmap)(bus_dma_tag_t, void *, size_t);
+ paddr_t (*_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *,
+ int, off_t, int, int);
+};
+
+#define bus_dmamap_create(t, s, n, m, b, f, p) \
+ (*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
+#define bus_dmamap_destroy(t, p) \
+ (*(t)->_dmamap_destroy)((t), (p))
+#define bus_dmamap_load(t, m, b, s, p, f) \
+ (*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
+#define bus_dmamap_load_mbuf(t, m, b, f) \
+ (*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
+#define bus_dmamap_load_uio(t, m, u, f) \
+ (*(t)->_dmamap_load_uio)((t), (m), (u), (f))
+#define bus_dmamap_load_raw(t, m, sg, n, s, f) \
+ (*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
+#define bus_dmamap_unload(t, p) \
+ (*(t)->_dmamap_unload)((t), (p))
+#define bus_dmamap_sync(t, p, o, l, ops) \
+ (*(t)->_dmamap_sync)((t), (p), (o), (l), (ops))
+
+#define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
+ (*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f))
+#define bus_dmamem_free(t, sg, n) \
+ (*(t)->_dmamem_free)((t), (sg), (n))
+#define bus_dmamem_map(t, sg, n, s, k, f) \
+ (*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f))
+#define bus_dmamem_unmap(t, k, s) \
+ (*(t)->_dmamem_unmap)((t), (k), (s))
+#define bus_dmamem_mmap(t, sg, n, o, p, f) \
+ (*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f))
+
+#define bus_dmatag_subregion(t, mna, mxa, nt, f) EOPNOTSUPP
+#define bus_dmatag_destroy(t)
+
+/*
+ * bus_dmamap_t
+ *
+ * Describes a DMA mapping.
+ */
+struct pmax_bus_dmamap {
+ /*
+ * PRIVATE MEMBERS: not for use my machine-independent code.
+ */
+ bus_size_t _dm_size; /* largest DMA transfer mappable */
+ int _dm_segcnt; /* number of segs this map can map */
+ bus_size_t _dm_maxmaxsegsz; /* fixed largest possible segment */
+ bus_size_t _dm_boundary; /* don't cross this */
+ int _dm_flags; /* misc. flags */
+ struct vmspace *_dm_vmspace; /* vmspace that owns the mapping */
+
+ /*
+ * PUBLIC MEMBERS: these are used by machine-independent code.
+ */
+ bus_size_t dm_maxsegsz; /* largest possible segment */
+ bus_size_t dm_mapsize; /* size of the mapping */
+ int dm_nsegs; /* # valid segments in mapping */
+ bus_dma_segment_t dm_segs[1]; /* segments; variable length */
+};
+
+#ifdef _PMAX_BUS_DMA_PRIVATE
+void pmax_bus_dma_init(void);
+
+int _bus_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t,
+ bus_size_t, int, bus_dmamap_t *);
+void _bus_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t);
+int _bus_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *,
+ bus_size_t, struct proc *, int);
+int _bus_dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t,
+ struct mbuf *, int);
+int _bus_dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t,
+ struct uio *, int);
+int _bus_dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t,
+ bus_dma_segment_t *, int, bus_size_t, int);
+void _bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t);
+void _bus_dmamap_sync_r3k(bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
+ bus_size_t, int);
+void _bus_dmamap_sync_r4k(bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
+ bus_size_t, int);
+
+int _bus_dmamem_alloc(bus_dma_tag_t tag, bus_size_t size,
+ bus_size_t alignment, bus_size_t boundary,
+ bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags);
+void _bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs,
+ int nsegs);
+int _bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs,
+ int nsegs, size_t size, void **kvap, int flags);
+void _bus_dmamem_unmap(bus_dma_tag_t tag, void *kva,
+ size_t size);
+paddr_t _bus_dmamem_mmap(bus_dma_tag_t tag, bus_dma_segment_t *segs,
+ int nsegs, off_t off, int prot, int flags);
+
+int _bus_dmamem_alloc_range(bus_dma_tag_t tag, bus_size_t size,
+ bus_size_t alignment, bus_size_t boundary,
+ bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags,
+ vaddr_t low, vaddr_t high);
+
+extern struct pmax_bus_dma_tag pmax_default_bus_dma_tag;
+#endif /* _PMAX_BUS_DMA_PRIVATE */
+
+/* XXX old pmax bus_space */
+#define normal_memt 0
#endif /* !_PMAX_BUS_H_ */
