507 lines
13 KiB
C
507 lines
13 KiB
C
/* $NetBSD: esp_pcmcia.c,v 1.15 2003/01/12 12:53:36 jdolecek Exp $ */
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/*-
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* Copyright (c) 2000 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 1.15 2003/01/12 12:53:36 jdolecek 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_io_handle sc_pcioh; /* PCMCIA i/o space info */
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int sc_io_window; /* our i/o window */
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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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int sc_flags;
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#define ESP_PCMCIA_ATTACHED 1 /* attach completed */
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#define ESP_PCMCIA_ATTACHING 2 /* attach in progress */
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};
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int esp_pcmcia_match __P((struct device *, struct cfdata *, void *));
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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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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_STR_PANASONIC_KXLC002, PCMCIA_VENDOR_PANASONIC,
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PCMCIA_PRODUCT_PANASONIC_KXLC002, 0 },
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{ NULL }
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};
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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,
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sizeof esp_pcmcia_products[0], NULL) != NULL)
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return (1);
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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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const struct pcmcia_product *pp;
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esc->sc_pf = pf;
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SIMPLEQ_FOREACH(cfe, &pf->cfe_head, cfe_list) {
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if (cfe->num_memspace != 0 ||
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cfe->num_iospace != 1)
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continue;
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if (pcmcia_io_alloc(pa->pf, cfe->iospace[0].start,
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cfe->iospace[0].length, 0, &esc->sc_pcioh) == 0)
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break;
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}
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if (cfe == 0) {
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printf(": can't alloc i/o space\n");
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goto no_config_entry;
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}
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/* Enable the card. */
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pcmcia_function_init(pf, cfe);
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if (pcmcia_function_enable(pf)) {
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printf(": function enable failed\n");
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goto enable_failed;
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}
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/* Map in the I/O space */
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if (pcmcia_io_map(pa->pf, PCMCIA_WIDTH_AUTO, 0, esc->sc_pcioh.size,
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&esc->sc_pcioh, &esc->sc_io_window)) {
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printf(": can't map i/o space\n");
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goto iomap_failed;
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}
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pp = pcmcia_product_lookup(pa, esp_pcmcia_products,
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sizeof esp_pcmcia_products[0], NULL);
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if (pp == NULL) {
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printf("\n");
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panic("esp_pcmcia_attach: impossible");
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}
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printf(": %s\n", pp->pp_name);
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esp_pcmcia_init(esc);
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/*
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* Initialize nca board itself.
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*/
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esc->sc_flags |= ESP_PCMCIA_ATTACHING;
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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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ncr53c9x_attach(sc);
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esc->sc_flags &= ~ESP_PCMCIA_ATTACHING;
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esc->sc_flags |= ESP_PCMCIA_ATTACHED;
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return;
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iomap_failed:
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/* Disable the device. */
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pcmcia_function_disable(esc->sc_pf);
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enable_failed:
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/* Unmap our I/O space. */
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pcmcia_io_free(esc->sc_pf, &esc->sc_pcioh);
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no_config_entry:
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return;
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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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bus_space_tag_t iot = esc->sc_pcioh.iot;
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bus_space_handle_t ioh = esc->sc_pcioh.ioh;
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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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bus_space_write_1(iot, ioh, NCR_CFG5, sc->sc_cfg5);
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bus_space_write_1(iot, ioh, NCR_PIOI, 0);
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bus_space_write_1(iot, ioh, NCR_PSTAT, 0);
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bus_space_write_1(iot, ioh, 0x09, 0x24);
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bus_space_write_1(iot, ioh, NCR_CFG4, sc->sc_cfg4);
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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 *esc = (void *)self;
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int error;
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if ((esc->sc_flags & ESP_PCMCIA_ATTACHED) == 0) {
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/* Nothing to detach. */
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return (0);
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}
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error = ncr53c9x_detach(&esc->sc_ncr53c9x, flags);
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if (error)
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return (error);
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/* Unmap our i/o window and i/o space. */
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pcmcia_io_unmap(esc->sc_pf, esc->sc_io_window);
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pcmcia_io_free(esc->sc_pf, &esc->sc_pcioh);
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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 *esc = (void *) arg;
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if (onoff) {
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#ifdef ESP_PCMCIA_POLL
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callout_reset(&esc->sc_poll_ch, 1, esp_pcmcia_poll, esc);
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#else
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/* Establish the interrupt handler. */
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esc->sc_ih = pcmcia_intr_establish(esc->sc_pf, IPL_BIO,
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ncr53c9x_intr, &esc->sc_ncr53c9x);
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if (esc->sc_ih == NULL) {
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printf("%s: couldn't establish interrupt handler\n",
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esc->sc_ncr53c9x.sc_dev.dv_xname);
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return (EIO);
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}
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#endif
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/*
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* If attach is in progress, we know that card power is
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* enabled and chip will be initialized later.
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* Otherwise, enable and reset now.
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*/
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if ((esc->sc_flags & ESP_PCMCIA_ATTACHING) == 0) {
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if (pcmcia_function_enable(esc->sc_pf)) {
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printf("%s: couldn't enable PCMCIA function\n",
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esc->sc_ncr53c9x.sc_dev.dv_xname);
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pcmcia_intr_disestablish(esc->sc_pf,
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esc->sc_ih);
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return (EIO);
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}
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/* Initialize only chip. */
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ncr53c9x_init(&esc->sc_ncr53c9x, 0);
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}
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} else {
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pcmcia_function_disable(esc->sc_pf);
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#ifdef ESP_PCMCIA_POLL
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callout_stop(&esc->sc_poll_ch);
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#else
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pcmcia_intr_disestablish(esc->sc_pf, esc->sc_ih);
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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_pcioh.iot, esc->sc_pcioh.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_pcioh.iot, esc->sc_pcioh.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;
|
|
esc->sc_tc = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
esp_pcmcia_dma_go(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
|
|
|
|
esc->sc_active = 1;
|
|
}
|
|
|
|
void
|
|
esp_pcmcia_dma_stop(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
}
|
|
|
|
int
|
|
esp_pcmcia_dma_isactive(sc)
|
|
struct ncr53c9x_softc *sc;
|
|
{
|
|
struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
|
|
|
|
return (esc->sc_active);
|
|
}
|