/* $OpenBSD: mlhsc.c,v 1.6 1997/01/18 12:26:34 niklas Exp $ */ /* $NetBSD: mlhsc.c,v 1.16 1996/12/23 09:10:25 veego Exp $ */ /* * Copyright (c) 1994 Michael L. Hitch * Copyright (c) 1982, 1990 The Regents of the University of California. * 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 the University of * California, Berkeley and its contributors. * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)dma.c */ #include #include #include #include #include #include #include #include #include #include #include void mlhscattach __P((struct device *, struct device *, void *)); int mlhscmatch __P((struct device *, void *, void *)); int mlhsc_dma_xfer_in __P((struct sci_softc *dev, int len, register u_char *buf, int phase)); int mlhsc_dma_xfer_out __P((struct sci_softc *dev, int len, register u_char *buf, int phase)); struct scsi_adapter mlhsc_scsiswitch = { sci_scsicmd, sci_minphys, 0, /* no lun support */ 0, /* no lun support */ }; struct scsi_device mlhsc_scsidev = { NULL, /* use default error handler */ NULL, /* do not have a start functio */ NULL, /* have no async handler */ NULL, /* Use default done routine */ }; #ifdef DEBUG extern int sci_debug; #define QPRINTF(a) if (sci_debug > 1) printf a #else #define QPRINTF(a) #endif extern int sci_data_wait; struct cfattach mlhsc_ca = { sizeof(struct sci_softc), mlhscmatch, mlhscattach }; struct cfdriver mlhsc_cd = { NULL, "mlhsc", DV_DULL, NULL, 0 }; /* * if we are my Hacker's SCSI board we are here. */ int mlhscmatch(pdp, match, auxp) struct device *pdp; void *match, *auxp; { struct zbus_args *zap; zap = auxp; /* * Check manufacturer and product id. */ if (zap->manid == 2011 && zap->prodid == 1) return(1); else return(0); } void mlhscattach(pdp, dp, auxp) struct device *pdp, *dp; void *auxp; { volatile u_char *rp; struct sci_softc *sc; struct zbus_args *zap; printf("\n"); zap = auxp; sc = (struct sci_softc *)dp; rp = zap->va; sc->sci_data = rp + 1; sc->sci_odata = rp + 1; sc->sci_icmd = rp + 3; sc->sci_mode = rp + 5; sc->sci_tcmd = rp + 7; sc->sci_bus_csr = rp + 9; sc->sci_sel_enb = rp + 9; sc->sci_csr = rp + 11; sc->sci_dma_send = rp + 11; sc->sci_idata = rp + 13; sc->sci_trecv = rp + 13; sc->sci_iack = rp + 15; sc->sci_irecv = rp + 15; sc->dma_xfer_in = mlhsc_dma_xfer_in; sc->dma_xfer_out = mlhsc_dma_xfer_out; scireset(sc); sc->sc_link.adapter_softc = sc; sc->sc_link.adapter_target = 7; sc->sc_link.adapter = &mlhsc_scsiswitch; sc->sc_link.device = &mlhsc_scsidev; sc->sc_link.openings = 1; TAILQ_INIT(&sc->sc_xslist); /* * attach all scsi units on us */ config_found(dp, &sc->sc_link, scsiprint); } int mlhsc_dma_xfer_in (dev, len, buf, phase) struct sci_softc *dev; int len; register u_char *buf; int phase; { int wait = sci_data_wait; u_char csr; volatile register u_char *sci_dma = dev->sci_data + 16; volatile register u_char *sci_csr = dev->sci_csr; #ifdef DEBUG u_char *obp = buf; #endif csr = *dev->sci_bus_csr; QPRINTF(("mlhdma_in %d, csr=%02x\n", len, csr)); *dev->sci_tcmd = phase; *dev->sci_mode |= SCI_MODE_DMA; *dev->sci_icmd = 0; *dev->sci_irecv = 0; while (len > 128) { wait = sci_data_wait; while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { if (!(*sci_csr & SCI_CSR_PHASE_MATCH) || !(*dev->sci_bus_csr & SCI_BUS_BSY) || --wait < 0) { #ifdef DEBUG if (sci_debug) printf("mlhdma_in fail: l%d i%x w%d\n", len, csr, wait); #endif *dev->sci_mode &= ~SCI_MODE_DMA; return 0; } } #define R1 (*buf++ = *sci_dma) R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; R1; len -= 128; } while (len > 0) { wait = sci_data_wait; while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { if (!(*sci_csr & SCI_CSR_PHASE_MATCH) || !(*dev->sci_bus_csr & SCI_BUS_BSY) || --wait < 0) { #ifdef DEBUG if (sci_debug) printf("mlhdma_in fail: l%d i%x w%d\n", len, csr, wait); #endif *dev->sci_mode &= ~SCI_MODE_DMA; return 0; } } *buf++ = *sci_dma; len--; } QPRINTF(("mlhdma_in {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", len, obp[0], obp[1], obp[2], obp[3], obp[4], obp[5], obp[6], obp[7], obp[8], obp[9])); *dev->sci_mode &= ~SCI_MODE_DMA; return 0; } int mlhsc_dma_xfer_out (dev, len, buf, phase) struct sci_softc *dev; int len; register u_char *buf; int phase; { int wait = sci_data_wait; u_char csr; volatile register u_char *sci_dma = dev->sci_data + 16; volatile register u_char *sci_csr = dev->sci_csr; csr = *dev->sci_bus_csr; QPRINTF(("mlhdma_xfer %d, csr=%02x\n", len, csr)); QPRINTF(("mlhgdma_out {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", len, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7], buf[8], buf[9])); *dev->sci_tcmd = phase; *dev->sci_mode |= SCI_MODE_DMA; *dev->sci_icmd = SCI_ICMD_DATA; *dev->sci_dma_send = 0; while (len > 64) { wait = sci_data_wait; while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { if (!(*sci_csr & SCI_CSR_PHASE_MATCH) || !(*dev->sci_bus_csr & SCI_BUS_BSY) || --wait < 0) { #ifdef DEBUG if (sci_debug) printf("mlhdma_out fail: l%d i%x w%d\n", len, csr, wait); #endif *dev->sci_mode &= ~SCI_MODE_DMA; return 0; } } #define W1 (*sci_dma = *buf++) W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; W1; len -= 64; } while (len > 0) { wait = sci_data_wait; while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { if (!(*sci_csr & SCI_CSR_PHASE_MATCH) || !(*dev->sci_bus_csr & SCI_BUS_BSY) || --wait < 0) { #ifdef DEBUG if (sci_debug) printf("mlhdma_out fail: l%d i%x w%d\n", len, csr, wait); #endif *dev->sci_mode &= ~SCI_MODE_DMA; return 0; } } *sci_dma = *buf++; len--; } wait = sci_data_wait; while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) == SCI_CSR_PHASE_MATCH && --wait); *dev->sci_mode &= ~SCI_MODE_DMA; return 0; }