diff --git a/sys/arch/vax/uba/uba_dma.c b/sys/arch/vax/uba/uba_dma.c new file mode 100644 index 000000000000..6a430d5a1486 --- /dev/null +++ b/sys/arch/vax/uba/uba_dma.c @@ -0,0 +1,281 @@ +/* $NetBSD: uba_dma.c,v 1.1 1999/06/06 19:00:53 ragge Exp $ */ + +/*- + * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, + * NASA Ames Research Center. + * + * 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 the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``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 FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPEUBAL, 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 +#include +#include +#include +#include +#include + +#define _VAX_BUS_DMA_PRIVATE +#include +#include +#include + +#include + +#include + +int uba_bus_dmamap_create_sgmap __P((bus_dma_tag_t, bus_size_t, int, + bus_size_t, bus_size_t, int, bus_dmamap_t *)); + +void uba_bus_dmamap_destroy_sgmap __P((bus_dma_tag_t, bus_dmamap_t)); + +int uba_bus_dmamap_load_sgmap __P((bus_dma_tag_t, bus_dmamap_t, void *, + bus_size_t, struct proc *, int)); + +int uba_bus_dmamap_load_mbuf_sgmap __P((bus_dma_tag_t, bus_dmamap_t, + struct mbuf *, int)); + +int uba_bus_dmamap_load_uio_sgmap __P((bus_dma_tag_t, bus_dmamap_t, + struct uio *, int)); + +int uba_bus_dmamap_load_raw_sgmap __P((bus_dma_tag_t, bus_dmamap_t, + bus_dma_segment_t *, int, bus_size_t, int)); + +void uba_bus_dmamap_unload_sgmap __P((bus_dma_tag_t, bus_dmamap_t)); + +void uba_bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t, + bus_size_t, int)); + +void +uba_dma_init(sc) + struct uba_vsoftc *sc; +{ + bus_dma_tag_t t; + struct pte *pte; + + /* + * Initialize the DMA tag used for sgmap-mapped DMA. + */ + t = &sc->uv_dmat; + t->_cookie = sc; + t->_wbase = 0; + t->_wsize = sc->uv_size; + t->_boundary = 0; + t->_sgmap = &sc->uv_sgmap; + t->_dmamap_create = uba_bus_dmamap_create_sgmap; + t->_dmamap_destroy = uba_bus_dmamap_destroy_sgmap; + t->_dmamap_load = uba_bus_dmamap_load_sgmap; + t->_dmamap_load_mbuf = uba_bus_dmamap_load_mbuf_sgmap; + t->_dmamap_load_uio = uba_bus_dmamap_load_uio_sgmap; + t->_dmamap_load_raw = uba_bus_dmamap_load_raw_sgmap; + t->_dmamap_unload = uba_bus_dmamap_unload_sgmap; + t->_dmamap_sync = uba_bus_dmamap_sync; + + t->_dmamem_alloc = _bus_dmamem_alloc; + t->_dmamem_free = _bus_dmamem_free; + t->_dmamem_map = _bus_dmamem_map; + t->_dmamem_unmap = _bus_dmamem_unmap; + t->_dmamem_mmap = _bus_dmamem_mmap; + + /* + * Map in Unibus map registers. + */ + pte = (struct pte *)vax_map_physmem(sc->uv_addr, sc->uv_size/VAX_NBPG); + if (pte == 0) + panic("uba_dma_init"); + /* + * Initialize the SGMAP. + */ + vax_sgmap_init(t, &sc->uv_sgmap, "uba_sgmap", 0, sc->uv_size, pte, 0); + +} + +/* + * Create a UBA SGMAP-mapped DMA map. + */ +int +uba_bus_dmamap_create_sgmap(t, size, nsegments, maxsegsz, boundary, + flags, dmamp) + bus_dma_tag_t t; + bus_size_t size; + int nsegments; + bus_size_t maxsegsz; + bus_size_t boundary; + int flags; + bus_dmamap_t *dmamp; +{ + bus_dmamap_t map; + int error; + + error = _bus_dmamap_create(t, size, nsegments, maxsegsz, + boundary, flags, dmamp); + if (error) + return (error); + + map = *dmamp; + + if (flags & BUS_DMA_ALLOCNOW) { + error = vax_sgmap_alloc(map, round_page(size), + t->_sgmap, flags); + if (error) + uba_bus_dmamap_destroy_sgmap(t, map); + } + + return (error); +} + +/* + * Destroy a UBA SGMAP-mapped DMA map. + */ +void +uba_bus_dmamap_destroy_sgmap(t, map) + bus_dma_tag_t t; + bus_dmamap_t map; +{ + + if (map->_dm_flags & DMAMAP_HAS_SGMAP) + vax_sgmap_free(map, t->_sgmap); + + _bus_dmamap_destroy(t, map); +} + +/* + * Load a UBA SGMAP-mapped DMA map with a linear buffer. + */ +int +uba_bus_dmamap_load_sgmap(t, map, buf, buflen, p, flags) + bus_dma_tag_t t; + bus_dmamap_t map; + void *buf; + bus_size_t buflen; + struct proc *p; + int flags; +{ + int error; + + error = vax_sgmap_load(t, map, buf, buflen, p, flags, t->_sgmap); + /* + * XXX - Set up BDPs. + */ + + return (error); +} + +/* + * Load a UBA SGMAP-mapped DMA map with an mbuf chain. + */ +int +uba_bus_dmamap_load_mbuf_sgmap(t, map, m, flags) + bus_dma_tag_t t; + bus_dmamap_t map; + struct mbuf *m; + int flags; +{ + int error; + + error = vax_sgmap_load_mbuf(t, map, m, flags, t->_sgmap); + + return (error); +} + +/* + * Load a UBA SGMAP-mapped DMA map with a uio. + */ +int +uba_bus_dmamap_load_uio_sgmap(t, map, uio, flags) + bus_dma_tag_t t; + bus_dmamap_t map; + struct uio *uio; + int flags; +{ + int error; + + error = vax_sgmap_load_uio(t, map, uio, flags, t->_sgmap); + + return (error); +} + +/* + * Load a UBA SGMAP-mapped DMA map with raw memory. + */ +int +uba_bus_dmamap_load_raw_sgmap(t, map, segs, nsegs, size, flags) + bus_dma_tag_t t; + bus_dmamap_t map; + bus_dma_segment_t *segs; + int nsegs; + bus_size_t size; + int flags; +{ + int error; + + error = vax_sgmap_load_raw(t, map, segs, nsegs, size, flags, + t->_sgmap); + + return (error); +} + +/* + * Unload a UBA DMA map. + */ +void +uba_bus_dmamap_unload_sgmap(t, map) + bus_dma_tag_t t; + bus_dmamap_t map; +{ + + /* + * Invalidate any SGMAP page table entries used by this + * mapping. + */ + vax_sgmap_unload(t, map, t->_sgmap); + + /* + * Do the generic bits of the unload. + */ + _bus_dmamap_unload(t, map); +} + +/* + * Sync the bus map. This is only needed if BDP's are used. + */ +void +uba_bus_dmamap_sync(tag, dmam, offset, len, ops) + bus_dma_tag_t tag; + bus_dmamap_t dmam; + bus_addr_t offset; + bus_size_t len; + int ops; +{ + /* Only BDP handling, but not yet. */ +} diff --git a/sys/arch/vax/uba/uba_mainbus.c b/sys/arch/vax/uba/uba_mainbus.c index 700bea98cece..75cf7ce00da9 100644 --- a/sys/arch/vax/uba/uba_mainbus.c +++ b/sys/arch/vax/uba/uba_mainbus.c @@ -1,4 +1,4 @@ -/* $NetBSD: uba_mainbus.c,v 1.1 1999/05/24 20:10:31 ragge Exp $ */ +/* $NetBSD: uba_mainbus.c,v 1.2 1999/06/06 19:00:53 ragge Exp $ */ /* * Copyright (c) 1996 Jonathan Stone. * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden. @@ -41,27 +41,34 @@ #include #include +#define _VAX_BUS_DMA_PRIVATE #include -#include #include #include #include +#include -#include -#include +#include + +#include + +/* Some Qbus-specific defines */ +#define QBASIZE (8192 * VAX_NBPG) +#define QBAMAP 0x20088000 +#define QIOPAGE 0x20000000 /* * The Q22 bus is the main IO bus on MicroVAX II/MicroVAX III systems. * It has an address space of 4MB (22 address bits), therefore the name, * and is hardware compatible with all 16 and 18 bits Q-bus devices. */ -int qba_match __P((struct device *, struct cfdata *, void *)); -void qba_attach __P((struct device *, struct device *, void *)); -void qba_beforescan __P((struct uba_softc*)); -void qba_init __P((struct uba_softc*)); +static int qba_match __P((struct device *, struct cfdata *, void *)); +static void qba_attach __P((struct device *, struct device *, void *)); +static void qba_beforescan __P((struct uba_softc*)); +static void qba_init __P((struct uba_softc*)); struct cfattach uba_mainbus_ca = { - sizeof(struct uba_softc), qba_match, qba_attach + sizeof(struct uba_vsoftc), qba_match, qba_attach }; extern struct vax_bus_space vax_mem_bus_space; @@ -85,30 +92,25 @@ qba_attach(parent, self, aux) struct device *parent, *self; void *aux; { - struct uba_softc *sc = (void *)self; + struct uba_vsoftc *sc = (void *)self; printf(": Q22\n"); /* * Fill in bus specific data. */ -/* sc->uh_uba not used; no regs */ -/* sc->uh_nbdp is 0; Qbus has no BDP's */ -/* sc->uh_nr is 0; there can be only one! */ -/* sc->uh_afterscan; not used */ -/* sc->uh_errchk; not used */ - sc->uh_beforescan = qba_beforescan; - sc->uh_ubainit = qba_init; - sc->uh_type = QBA; - sc->uh_memsize = QBAPAGES; - sc->uh_tag = &vax_mem_bus_space; - /* - * Map in the UBA page map into kernel space. On other UBAs, - * the map registers are in the bus IO space. - */ - sc->uh_mr = (void *)vax_map_physmem(QBAMAP, - (QBAPAGES * sizeof(struct pte)) / VAX_NBPG); + sc->uv_sc.uh_beforescan = qba_beforescan; + sc->uv_sc.uh_ubainit = qba_init; + sc->uv_sc.uh_iot = &vax_mem_bus_space; + sc->uv_sc.uh_dmat = &sc->uv_dmat; - uba_attach(sc, QIOPAGE); + /* + * Fill in variables used by the sgmap system. + */ + sc->uv_size = QBASIZE; /* Size in bytes of Qbus space */ + sc->uv_addr = QBAMAP; /* Physical address of map registers */ + + uba_dma_init(sc); + uba_attach(&sc->uv_sc, QIOPAGE); } /* @@ -119,6 +121,8 @@ void qba_beforescan(sc) struct uba_softc *sc; { +#define QIPCR 0x1f40 +#define Q_LMEAE 0x20 bus_space_write_2(sc->uh_tag, sc->uh_ioh, QIPCR, Q_LMEAE); }