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Diffstat (limited to 'sys/arch/sgi/hpc/hpcdma.c')
-rw-r--r--sys/arch/sgi/hpc/hpcdma.c208
1 files changed, 0 insertions, 208 deletions
diff --git a/sys/arch/sgi/hpc/hpcdma.c b/sys/arch/sgi/hpc/hpcdma.c
deleted file mode 100644
index 53dc86994ce..00000000000
--- a/sys/arch/sgi/hpc/hpcdma.c
+++ /dev/null
@@ -1,208 +0,0 @@
-/* $OpenBSD: hpcdma.c,v 1.1 2012/03/28 20:44:23 miod Exp $ */
-/* $NetBSD: hpcdma.c,v 1.21 2011/07/01 18:53:46 dyoung Exp $ */
-
-/*
- * Copyright (c) 2001 Wayne Knowles
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Wayne Knowles
- *
- * 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, 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.
- */
-
-/*
- * Support for SCSI DMA provided by the HPC.
- *
- * Note: We use SCSI0 offsets, etc. here. Since the layout of SCSI0
- * and SCSI1 are the same, this is no problem.
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/device.h>
-#include <sys/buf.h>
-
-#include <uvm/uvm_extern.h>
-
-#include <machine/bus.h>
-
-#include <sgi/hpc/hpcreg.h>
-#include <sgi/hpc/hpcvar.h>
-#include <sgi/hpc/hpcdma.h>
-
-/*
- * Allocate DMA Chain descriptor list
- */
-void
-hpcdma_init(struct hpc_attach_args *haa, struct hpc_dma_softc *sc, int ndesc)
-{
- bus_dma_segment_t seg;
- int rseg, allocsz;
-
- sc->sc_bst = haa->ha_st;
- sc->sc_dmat = haa->ha_dmat;
- sc->sc_ndesc = ndesc;
- sc->sc_flags = 0;
-
- if (bus_space_subregion(haa->ha_st, haa->ha_sh, haa->ha_dmaoff,
- sc->hpc->scsi0_regs_size, &sc->sc_bsh) != 0) {
- printf(": can't map DMA registers\n");
- return;
- }
-
- /* Alloc 1 additional descriptor - needed for DMA bug fix */
- allocsz = sizeof(struct hpc_dma_desc) * (ndesc + 1);
-
- /*
- * Allocate a block of memory for dma chaining pointers
- */
- if (bus_dmamem_alloc(sc->sc_dmat, allocsz, 0, 0, &seg, 1, &rseg,
- BUS_DMA_NOWAIT)) {
- printf(": can't allocate sglist\n");
- return;
- }
- /* Map pages into kernel memory */
- if (bus_dmamem_map(sc->sc_dmat, &seg, rseg, allocsz,
- (caddr_t *)&sc->sc_desc_kva, BUS_DMA_NOWAIT)) {
- printf(": can't map sglist\n");
- bus_dmamem_free(sc->sc_dmat, &seg, rseg);
- return;
- }
-
- if (bus_dmamap_create(sc->sc_dmat, allocsz, 1 /*seg*/, allocsz, 0,
- BUS_DMA_WAITOK, &sc->sc_dmamap) != 0) {
- printf(": failed to create dmamap\n");
- return;
- }
-
- if (bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap,
- sc->sc_desc_kva, allocsz, NULL, BUS_DMA_NOWAIT)) {
- printf(": can't load sglist\n");
- return;
- }
-
- sc->sc_desc_pa = sc->sc_dmamap->dm_segs[0].ds_addr;
-}
-
-
-void
-hpcdma_sglist_create(struct hpc_dma_softc *sc, bus_dmamap_t dmamap)
-{
- struct hpc_dma_desc *hva;
- bus_addr_t hpa;
- bus_dma_segment_t *segp;
- int i;
-
- KASSERT(dmamap->dm_nsegs <= sc->sc_ndesc);
-
- hva = sc->sc_desc_kva;
- hpa = sc->sc_desc_pa;
- segp = dmamap->dm_segs;
-
-#ifdef DMA_DEBUG
- printf("DMA_SGLIST<");
-#endif
- for (i = dmamap->dm_nsegs; i; i--) {
-#ifdef DMA_DEBUG
- printf("%p:%ld, ", (void *)segp->ds_addr, segp->ds_len);
-#endif
- hpa += sizeof(struct hpc_dma_desc); /* next chain desc */
- if (sc->hpc->revision == 3) {
- hva->hpc3_hdd_bufptr = segp->ds_addr;
- hva->hpc3_hdd_ctl = segp->ds_len;
- hva->hdd_descptr = hpa;
- } else /* HPC 1/1.5 */ {
- /*
- * there doesn't seem to be any good way of doing this
- * via an abstraction layer
- */
- hva->hpc1_hdd_bufptr = segp->ds_addr;
- hva->hpc1_hdd_ctl = segp->ds_len;
- hva->hdd_descptr = hpa;
- }
- ++hva;
- ++segp;
- }
-
- /* Work around HPC3 DMA bug */
- if (sc->hpc->revision == 3) {
- hva->hpc3_hdd_bufptr = 0;
- hva->hpc3_hdd_ctl = HPC3_HDD_CTL_EOCHAIN;
- hva->hdd_descptr = 0;
- } else {
- hva--;
- hva->hpc1_hdd_bufptr |= HPC1_HDD_CTL_EOCHAIN;
- hva->hdd_descptr = 0;
- }
-
-#ifdef DMA_DEBUG
- printf(">\n");
-#endif
- bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
- 0, sizeof(struct hpc_dma_desc) * (dmamap->dm_nsegs + 1),
- BUS_DMASYNC_PREWRITE);
-
- /* Load DMA Descriptor list */
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, sc->hpc->scsi0_ndbp,
- sc->sc_desc_pa);
-}
-
-void
-hpcdma_cntl(struct hpc_dma_softc *sc, uint32_t mode)
-{
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, sc->hpc->scsi0_ctl, mode);
-}
-
-void
-hpcdma_reset(struct hpc_dma_softc *sc)
-{
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, sc->hpc->scsi0_ctl,
- sc->hpc->scsi_dmactl_reset);
- delay(100);
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, sc->hpc->scsi0_ctl, 0);
- delay(1000);
-}
-
-void
-hpcdma_flush(struct hpc_dma_softc *sc)
-{
- uint32_t mode;
-
- mode = bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->hpc->scsi0_ctl);
- bus_space_write_4(sc->sc_bst, sc->sc_bsh,
- sc->hpc->scsi0_ctl, mode | sc->hpc->scsi_dmactl_flush);
-
- /* Wait for Active bit to drop */
- while (bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->hpc->scsi0_ctl) &
- sc->hpc->scsi_dmactl_active) {
- bus_space_barrier(sc->sc_bst, sc->sc_bsh, sc->hpc->scsi0_ctl, 4,
- BUS_SPACE_BARRIER_READ);
- }
-}
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