465 lines
11 KiB
C
465 lines
11 KiB
C
/* $NetBSD: esp_pcmcia.c,v 1.24 2004/08/10 22:49:12 mycroft Exp $ */
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/*-
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* Copyright (c) 2000, 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: esp_pcmcia.c,v 1.24 2004/08/10 22:49:12 mycroft Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <dev/pcmcia/pcmciareg.h>
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#include <dev/pcmcia/pcmciavar.h>
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#include <dev/pcmcia/pcmciadevs.h>
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#include <dev/ic/ncr53c9xreg.h>
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#include <dev/ic/ncr53c9xvar.h>
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struct esp_pcmcia_softc {
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struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */
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int sc_active; /* Pseudo-DMA state vars */
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int sc_tc;
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int sc_datain;
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size_t sc_dmasize;
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size_t sc_dmatrans;
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char **sc_dmaaddr;
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size_t *sc_pdmalen;
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/* PCMCIA-specific goo. */
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struct pcmcia_function *sc_pf; /* our PCMCIA function */
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void *sc_ih; /* interrupt handler */
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#ifdef ESP_PCMCIA_POLL
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struct callout sc_poll_ch;
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#endif
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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int sc_state;
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#define ESP_PCMCIA_ATTACHED 3
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};
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int esp_pcmcia_match __P((struct device *, struct cfdata *, void *));
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int esp_pcmcia_validate_config __P((struct pcmcia_config_entry *));
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void esp_pcmcia_attach __P((struct device *, struct device *, void *));
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void esp_pcmcia_init __P((struct esp_pcmcia_softc *));
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int esp_pcmcia_detach __P((struct device *, int));
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int esp_pcmcia_enable __P((struct device *, int));
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CFATTACH_DECL(esp_pcmcia, sizeof(struct esp_pcmcia_softc),
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esp_pcmcia_match, esp_pcmcia_attach, esp_pcmcia_detach, NULL);
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/*
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* Functions and the switch for the MI code.
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*/
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#ifdef ESP_PCMCIA_POLL
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void esp_pcmcia_poll __P((void *));
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#endif
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u_char esp_pcmcia_read_reg __P((struct ncr53c9x_softc *, int));
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void esp_pcmcia_write_reg __P((struct ncr53c9x_softc *, int, u_char));
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int esp_pcmcia_dma_isintr __P((struct ncr53c9x_softc *));
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void esp_pcmcia_dma_reset __P((struct ncr53c9x_softc *));
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int esp_pcmcia_dma_intr __P((struct ncr53c9x_softc *));
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int esp_pcmcia_dma_setup __P((struct ncr53c9x_softc *, caddr_t *,
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size_t *, int, size_t *));
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void esp_pcmcia_dma_go __P((struct ncr53c9x_softc *));
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void esp_pcmcia_dma_stop __P((struct ncr53c9x_softc *));
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int esp_pcmcia_dma_isactive __P((struct ncr53c9x_softc *));
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const struct ncr53c9x_glue esp_pcmcia_glue = {
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esp_pcmcia_read_reg,
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esp_pcmcia_write_reg,
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esp_pcmcia_dma_isintr,
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esp_pcmcia_dma_reset,
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esp_pcmcia_dma_intr,
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esp_pcmcia_dma_setup,
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esp_pcmcia_dma_go,
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esp_pcmcia_dma_stop,
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esp_pcmcia_dma_isactive,
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NULL, /* gl_clear_latched_intr */
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};
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const struct pcmcia_product esp_pcmcia_products[] = {
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{ PCMCIA_VENDOR_PANASONIC, PCMCIA_PRODUCT_PANASONIC_KXLC002,
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PCMCIA_CIS_PANASONIC_KXLC002 },
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{ PCMCIA_VENDOR_RATOC, PCMCIA_PRODUCT_RATOC_REX_9530,
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PCMCIA_CIS_RATOC_REX_9530 },
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};
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const size_t esp_pcmcia_nproducts =
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sizeof(esp_pcmcia_products) / sizeof(esp_pcmcia_products[0]);
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int
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esp_pcmcia_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pcmcia_attach_args *pa = aux;
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if (pcmcia_product_lookup(pa, esp_pcmcia_products, esp_pcmcia_nproducts,
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sizeof(esp_pcmcia_products[0]), NULL))
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return (1);
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return (0);
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}
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int
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esp_pcmcia_validate_config(cfe)
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struct pcmcia_config_entry *cfe;
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{
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if (cfe->iftype != PCMCIA_IFTYPE_IO ||
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cfe->num_memspace != 0 ||
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cfe->num_iospace != 1)
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return (EINVAL);
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return (0);
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}
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void
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esp_pcmcia_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct esp_pcmcia_softc *esc = (void *)self;
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struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
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struct pcmcia_attach_args *pa = aux;
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struct pcmcia_config_entry *cfe;
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struct pcmcia_function *pf = pa->pf;
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int error;
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esc->sc_pf = pf;
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error = pcmcia_function_configure(pf, esp_pcmcia_validate_config);
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if (error) {
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aprint_error("%s: configure failed, error=%d\n", self->dv_xname,
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error);
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return;
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}
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cfe = pf->cfe;
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esc->sc_iot = cfe->iospace[0].handle.iot;
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esc->sc_ioh = cfe->iospace[0].handle.ioh;
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esp_pcmcia_init(esc);
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error = esp_pcmcia_enable(self, 1);
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if (error)
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goto fail;
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sc->sc_adapter.adapt_minphys = minphys;
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sc->sc_adapter.adapt_request = ncr53c9x_scsipi_request;
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sc->sc_adapter.adapt_enable = esp_pcmcia_enable;
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sc->sc_adapter.adapt_refcnt = 1;
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ncr53c9x_attach(sc);
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scsipi_adapter_delref(&sc->sc_adapter);
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esc->sc_state = ESP_PCMCIA_ATTACHED;
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return;
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fail:
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pcmcia_function_unconfigure(pf);
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}
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void
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esp_pcmcia_init(esc)
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struct esp_pcmcia_softc *esc;
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{
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struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
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/* id 7, clock 40M, parity ON, sync OFF, fast ON, slow ON */
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sc->sc_glue = &esp_pcmcia_glue;
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#ifdef ESP_PCMCIA_POLL
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callout_init(&esc->sc_poll_ch);
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#endif
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sc->sc_rev = NCR_VARIANT_ESP406;
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sc->sc_id = 7;
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sc->sc_freq = 40;
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/* try -PARENB -SLOW */
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sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB | NCRCFG1_SLOW;
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/* try +FE */
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sc->sc_cfg2 = NCRCFG2_SCSI2;
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/* try -IDM -FSCSI -FCLK */
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sc->sc_cfg3 = NCRESPCFG3_CDB | NCRESPCFG3_FCLK | NCRESPCFG3_IDM |
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NCRESPCFG3_FSCSI;
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sc->sc_cfg4 = NCRCFG4_ACTNEG;
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/* try +INTP */
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sc->sc_cfg5 = NCRCFG5_CRS1 | NCRCFG5_AADDR | NCRCFG5_PTRINC;
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sc->sc_minsync = 0;
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sc->sc_maxxfer = 64 * 1024;
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}
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int
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esp_pcmcia_detach(self, flags)
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struct device *self;
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int flags;
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{
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struct esp_pcmcia_softc *sc = (void *)self;
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int error;
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if (sc->sc_state != ESP_PCMCIA_ATTACHED)
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return (0);
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error = ncr53c9x_detach(&sc->sc_ncr53c9x, flags);
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if (error)
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return (error);
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pcmcia_function_unconfigure(sc->sc_pf);
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return (0);
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}
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int
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esp_pcmcia_enable(arg, onoff)
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struct device *arg;
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int onoff;
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{
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struct esp_pcmcia_softc *sc = (void *)arg;
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int error;
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if (onoff) {
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#ifdef ESP_PCMCIA_POLL
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callout_reset(&sc->sc_poll_ch, 1, esp_pcmcia_poll, sc);
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#else
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/* Establish the interrupt handler. */
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sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_BIO,
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ncr53c9x_intr, &sc->sc_ncr53c9x);
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if (!sc->sc_ih)
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return (EIO);
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#endif
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error = pcmcia_function_enable(sc->sc_pf);
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if (error) {
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pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
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sc->sc_ih = 0;
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return (error);
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}
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/* Initialize only chip. */
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ncr53c9x_init(&sc->sc_ncr53c9x, 0);
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} else {
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pcmcia_function_disable(sc->sc_pf);
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#ifdef ESP_PCMCIA_POLL
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callout_stop(&sc->sc_poll_ch);
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#else
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pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
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sc->sc_ih = 0;
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#endif
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}
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return (0);
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}
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#ifdef ESP_PCMCIA_POLL
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void
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esp_pcmcia_poll(arg)
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void *arg;
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{
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struct esp_pcmcia_softc *esc = arg;
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(void) ncr53c9x_intr(&esc->sc_ncr53c9x);
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callout_reset(&esc->sc_poll_ch, 1, esp_pcmcia_poll, esc);
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}
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#endif
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/*
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* Glue functions.
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*/
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u_char
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esp_pcmcia_read_reg(sc, reg)
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struct ncr53c9x_softc *sc;
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int reg;
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{
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struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
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u_char v;
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v = bus_space_read_1(esc->sc_iot, esc->sc_ioh, reg);
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return v;
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}
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void
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esp_pcmcia_write_reg(sc, reg, val)
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struct ncr53c9x_softc *sc;
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int reg;
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u_char val;
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{
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struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
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u_char v = val;
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if (reg == NCR_CMD && v == (NCRCMD_TRANS|NCRCMD_DMA))
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v = NCRCMD_TRANS;
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bus_space_write_1(esc->sc_iot, esc->sc_ioh, reg, v);
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}
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int
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esp_pcmcia_dma_isintr(sc)
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struct ncr53c9x_softc *sc;
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{
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return NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT;
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}
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void
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esp_pcmcia_dma_reset(sc)
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struct ncr53c9x_softc *sc;
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{
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struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
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esc->sc_active = 0;
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esc->sc_tc = 0;
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}
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int
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esp_pcmcia_dma_intr(sc)
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struct ncr53c9x_softc *sc;
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{
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struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
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u_char *p;
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u_int espphase, espstat, espintr;
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int cnt;
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if (esc->sc_active == 0) {
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printf("%s: dma_intr--inactive DMA\n", sc->sc_dev.dv_xname);
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return -1;
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}
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if ((sc->sc_espintr & NCRINTR_BS) == 0) {
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esc->sc_active = 0;
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return 0;
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}
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cnt = *esc->sc_pdmalen;
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if (*esc->sc_pdmalen == 0) {
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printf("%s: data interrupt, but no count left\n",
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sc->sc_dev.dv_xname);
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}
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p = *esc->sc_dmaaddr;
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espphase = sc->sc_phase;
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espstat = (u_int) sc->sc_espstat;
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espintr = (u_int) sc->sc_espintr;
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do {
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if (esc->sc_datain) {
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*p++ = NCR_READ_REG(sc, NCR_FIFO);
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cnt--;
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if (espphase == DATA_IN_PHASE)
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NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS);
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else
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esc->sc_active = 0;
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} else {
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if (espphase == DATA_OUT_PHASE ||
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espphase == MESSAGE_OUT_PHASE) {
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NCR_WRITE_REG(sc, NCR_FIFO, *p++);
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cnt--;
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NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS);
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} else
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esc->sc_active = 0;
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}
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if (esc->sc_active) {
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while (!(NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT));
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espstat = NCR_READ_REG(sc, NCR_STAT);
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espintr = NCR_READ_REG(sc, NCR_INTR);
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espphase = (espintr & NCRINTR_DIS)
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? /* Disconnected */ BUSFREE_PHASE
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: espstat & PHASE_MASK;
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}
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} while (esc->sc_active && espintr);
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sc->sc_phase = espphase;
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sc->sc_espstat = (u_char) espstat;
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sc->sc_espintr = (u_char) espintr;
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*esc->sc_dmaaddr = p;
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*esc->sc_pdmalen = cnt;
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if (*esc->sc_pdmalen == 0)
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esc->sc_tc = NCRSTAT_TC;
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sc->sc_espstat |= esc->sc_tc;
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return 0;
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}
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int
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esp_pcmcia_dma_setup(sc, addr, len, datain, dmasize)
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struct ncr53c9x_softc *sc;
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caddr_t *addr;
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size_t *len;
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int datain;
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size_t *dmasize;
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{
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struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
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esc->sc_dmaaddr = addr;
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esc->sc_pdmalen = len;
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esc->sc_datain = datain;
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esc->sc_dmasize = *dmasize;
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esc->sc_tc = 0;
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return 0;
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}
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void
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esp_pcmcia_dma_go(sc)
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struct ncr53c9x_softc *sc;
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{
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struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
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esc->sc_active = 1;
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}
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void
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esp_pcmcia_dma_stop(sc)
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struct ncr53c9x_softc *sc;
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{
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}
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int
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esp_pcmcia_dma_isactive(sc)
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struct ncr53c9x_softc *sc;
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{
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struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
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return (esc->sc_active);
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}
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