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wdc_isa.c revision 1.51.24.1
      1  1.51.24.1      matt /*	$NetBSD: wdc_isa.c,v 1.51.24.1 2007/11/06 23:28:03 matt Exp $ */
      2        1.1       cgd 
      3        1.9   mycroft /*-
      4       1.32   mycroft  * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc.
      5        1.9   mycroft  * All rights reserved.
      6        1.1       cgd  *
      7        1.9   mycroft  * This code is derived from software contributed to The NetBSD Foundation
      8        1.9   mycroft  * by Charles M. Hannum and by Onno van der Linden.
      9        1.1       cgd  *
     10        1.1       cgd  * Redistribution and use in source and binary forms, with or without
     11        1.1       cgd  * modification, are permitted provided that the following conditions
     12        1.1       cgd  * are met:
     13        1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     14        1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     15        1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     16        1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     17        1.1       cgd  *    documentation and/or other materials provided with the distribution.
     18        1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     19        1.1       cgd  *    must display the following acknowledgement:
     20        1.9   mycroft  *        This product includes software developed by the NetBSD
     21        1.9   mycroft  *        Foundation, Inc. and its contributors.
     22        1.9   mycroft  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23        1.9   mycroft  *    contributors may be used to endorse or promote products derived
     24        1.9   mycroft  *    from this software without specific prior written permission.
     25        1.1       cgd  *
     26        1.9   mycroft  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27        1.9   mycroft  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28        1.9   mycroft  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29        1.9   mycroft  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30        1.9   mycroft  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31        1.9   mycroft  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32        1.9   mycroft  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33        1.9   mycroft  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34        1.9   mycroft  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35        1.9   mycroft  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36        1.9   mycroft  * POSSIBILITY OF SUCH DAMAGE.
     37        1.1       cgd  */
     38       1.22     lukem 
     39       1.22     lukem #include <sys/cdefs.h>
     40  1.51.24.1      matt __KERNEL_RCSID(0, "$NetBSD: wdc_isa.c,v 1.51.24.1 2007/11/06 23:28:03 matt Exp $");
     41        1.1       cgd 
     42        1.1       cgd #include <sys/param.h>
     43        1.1       cgd #include <sys/systm.h>
     44        1.1       cgd #include <sys/device.h>
     45       1.10    bouyer #include <sys/malloc.h>
     46        1.1       cgd 
     47  1.51.24.1      matt #include <sys/bus.h>
     48  1.51.24.1      matt #include <sys/intr.h>
     49        1.1       cgd 
     50        1.1       cgd #include <dev/isa/isavar.h>
     51        1.1       cgd #include <dev/isa/isadmavar.h>
     52        1.3   mycroft 
     53       1.37      fvdl #include <dev/ic/wdcreg.h>
     54       1.10    bouyer #include <dev/ata/atavar.h>
     55        1.1       cgd #include <dev/ic/wdcvar.h>
     56        1.1       cgd 
     57        1.1       cgd #define	WDC_ISA_REG_NPORTS	8
     58        1.1       cgd #define	WDC_ISA_AUXREG_OFFSET	0x206
     59        1.5  drochner #define	WDC_ISA_AUXREG_NPORTS	1 /* XXX "fdc" owns ports 0x3f7/0x377 */
     60        1.1       cgd 
     61       1.15    bouyer /* options passed via the 'flags' config keyword */
     62       1.20  takemura #define WDC_OPTIONS_32			0x01 /* try to use 32bit data I/O */
     63       1.21       leo #define WDC_OPTIONS_ATA_NOSTREAM	0x04
     64       1.21       leo #define WDC_OPTIONS_ATAPI_NOSTREAM	0x08
     65        1.1       cgd 
     66        1.1       cgd struct wdc_isa_softc {
     67       1.10    bouyer 	struct	wdc_softc sc_wdcdev;
     68       1.42   thorpej 	struct	ata_channel *wdc_chanlist[1];
     69       1.42   thorpej 	struct	ata_channel ata_channel;
     70       1.38   thorpej 	struct	ata_queue wdc_chqueue;
     71       1.42   thorpej 	struct	wdc_regs wdc_regs;
     72        1.7   thorpej 	isa_chipset_tag_t sc_ic;
     73        1.1       cgd 	void	*sc_ih;
     74        1.1       cgd 	int	sc_drq;
     75        1.1       cgd };
     76        1.1       cgd 
     77       1.44   thorpej static int	wdc_isa_probe(struct device *, struct cfdata *, void *);
     78       1.44   thorpej static void	wdc_isa_attach(struct device *, struct device *, void *);
     79        1.1       cgd 
     80       1.27   thorpej CFATTACH_DECL(wdc_isa, sizeof(struct wdc_isa_softc),
     81       1.28   thorpej     wdc_isa_probe, wdc_isa_attach, NULL, NULL);
     82        1.1       cgd 
     83       1.29   mycroft #if 0
     84       1.44   thorpej static void	wdc_isa_dma_setup(struct wdc_isa_softc *);
     85       1.44   thorpej static int	wdc_isa_dma_init(void*, int, int, void *, size_t, int);
     86       1.44   thorpej static void 	wdc_isa_dma_start(void*, int, int);
     87       1.44   thorpej static int	wdc_isa_dma_finish(void*, int, int, int);
     88       1.29   mycroft #endif
     89        1.1       cgd 
     90       1.44   thorpej static int
     91       1.51  christos wdc_isa_probe(struct device *parent, struct cfdata *match,
     92       1.50  christos     void *aux)
     93        1.1       cgd {
     94       1.42   thorpej 	struct ata_channel ch;
     95        1.1       cgd 	struct isa_attach_args *ia = aux;
     96       1.42   thorpej 	struct wdc_softc wdc;
     97       1.42   thorpej 	struct wdc_regs wdr;
     98       1.37      fvdl 	int result = 0, i;
     99       1.18   thorpej 
    100       1.24   thorpej 	if (ia->ia_nio < 1)
    101       1.24   thorpej 		return (0);
    102       1.24   thorpej 	if (ia->ia_nirq < 1)
    103       1.24   thorpej 		return (0);
    104       1.24   thorpej 
    105       1.24   thorpej 	if (ISA_DIRECT_CONFIG(ia))
    106       1.24   thorpej 		return (0);
    107       1.24   thorpej 
    108       1.46  drochner 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
    109       1.24   thorpej 		return (0);
    110       1.46  drochner 	if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
    111       1.24   thorpej 		return (0);
    112       1.46  drochner 	if (ia->ia_ndrq > 0 && ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ)
    113       1.25  gmcgarry 		ia->ia_ndrq = 0;
    114       1.24   thorpej 
    115       1.42   thorpej 	memset(&wdc, 0, sizeof(wdc));
    116       1.18   thorpej 	memset(&ch, 0, sizeof(ch));
    117       1.45   thorpej 	ch.ch_atac = &wdc.sc_atac;
    118       1.42   thorpej 	wdc.regs = &wdr;
    119        1.1       cgd 
    120       1.42   thorpej 	wdr.cmd_iot = ia->ia_iot;
    121       1.24   thorpej 
    122       1.42   thorpej 	if (bus_space_map(wdr.cmd_iot, ia->ia_io[0].ir_addr,
    123       1.42   thorpej 	    WDC_ISA_REG_NPORTS, 0, &wdr.cmd_baseioh))
    124        1.1       cgd 		goto out;
    125        1.1       cgd 
    126       1.37      fvdl 	for (i = 0; i < WDC_ISA_REG_NPORTS; i++) {
    127       1.42   thorpej 		if (bus_space_subregion(wdr.cmd_iot, wdr.cmd_baseioh, i,
    128       1.42   thorpej 		    i == 0 ? 4 : 1, &wdr.cmd_iohs[i]) != 0)
    129       1.37      fvdl 			goto outunmap;
    130       1.37      fvdl 	}
    131       1.41   thorpej 	wdc_init_shadow_regs(&ch);
    132       1.37      fvdl 
    133       1.42   thorpej 	wdr.ctl_iot = ia->ia_iot;
    134       1.42   thorpej 	if (bus_space_map(wdr.ctl_iot, ia->ia_io[0].ir_addr +
    135       1.42   thorpej 	    WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 0, &wdr.ctl_ioh))
    136        1.1       cgd 		goto outunmap;
    137        1.1       cgd 
    138       1.10    bouyer 	result = wdcprobe(&ch);
    139        1.1       cgd 	if (result) {
    140       1.24   thorpej 		ia->ia_nio = 1;
    141       1.24   thorpej 		ia->ia_io[0].ir_size = WDC_ISA_REG_NPORTS;
    142       1.24   thorpej 
    143       1.24   thorpej 		ia->ia_nirq = 1;
    144       1.24   thorpej 
    145       1.24   thorpej 		ia->ia_niomem = 0;
    146        1.1       cgd 	}
    147        1.1       cgd 
    148       1.42   thorpej 	bus_space_unmap(wdr.ctl_iot, wdr.ctl_ioh, WDC_ISA_AUXREG_NPORTS);
    149        1.1       cgd outunmap:
    150       1.42   thorpej 	bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_ISA_REG_NPORTS);
    151        1.1       cgd out:
    152        1.1       cgd 	return (result);
    153        1.1       cgd }
    154        1.1       cgd 
    155       1.44   thorpej static void
    156       1.51  christos wdc_isa_attach(struct device *parent, struct device *self, void *aux)
    157        1.1       cgd {
    158        1.4   mycroft 	struct wdc_isa_softc *sc = (void *)self;
    159       1.42   thorpej 	struct wdc_regs *wdr;
    160        1.1       cgd 	struct isa_attach_args *ia = aux;
    161       1.49   thorpej 	int wdc_cf_flags = device_cfdata(self)->cf_flags;
    162       1.37      fvdl 	int i;
    163        1.4   mycroft 
    164       1.42   thorpej 	sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
    165       1.42   thorpej 	wdr->cmd_iot = ia->ia_iot;
    166       1.42   thorpej 	wdr->ctl_iot = ia->ia_iot;
    167        1.7   thorpej 	sc->sc_ic = ia->ia_ic;
    168       1.42   thorpej 	if (bus_space_map(wdr->cmd_iot, ia->ia_io[0].ir_addr,
    169       1.42   thorpej 	    WDC_ISA_REG_NPORTS, 0, &wdr->cmd_baseioh) ||
    170       1.42   thorpej 	    bus_space_map(wdr->ctl_iot,
    171       1.24   thorpej 	      ia->ia_io[0].ir_addr + WDC_ISA_AUXREG_OFFSET,
    172       1.42   thorpej 	      WDC_ISA_AUXREG_NPORTS, 0, &wdr->ctl_ioh)) {
    173       1.30      matt 		printf(": couldn't map registers\n");
    174       1.30      matt 		return;
    175        1.1       cgd 	}
    176       1.37      fvdl 
    177       1.37      fvdl 	for (i = 0; i < WDC_ISA_REG_NPORTS; i++) {
    178       1.42   thorpej 		if (bus_space_subregion(wdr->cmd_iot,
    179       1.42   thorpej 		      wdr->cmd_baseioh, i, i == 0 ? 4 : 1,
    180       1.42   thorpej 		      &wdr->cmd_iohs[i]) != 0) {
    181       1.37      fvdl 			printf(": couldn't subregion registers\n");
    182       1.37      fvdl 			return;
    183       1.37      fvdl 		}
    184       1.37      fvdl 	}
    185       1.37      fvdl 
    186       1.42   thorpej 	wdr->data32iot = wdr->cmd_iot;
    187       1.42   thorpej 	wdr->data32ioh = wdr->cmd_iohs[0];
    188        1.1       cgd 
    189       1.29   mycroft #if 0
    190       1.46  drochner 	if (ia->ia_ndrq > 0 && ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ) {
    191       1.24   thorpej 		sc->sc_drq = ia->ia_drq[0].ir_drq;
    192        1.1       cgd 
    193       1.45   thorpej 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
    194       1.10    bouyer 		sc->sc_wdcdev.dma_arg = sc;
    195       1.10    bouyer 		sc->sc_wdcdev.dma_init = wdc_isa_dma_init;
    196       1.10    bouyer 		sc->sc_wdcdev.dma_start = wdc_isa_dma_start;
    197       1.10    bouyer 		sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish;
    198       1.10    bouyer 		wdc_isa_dma_setup(sc);
    199        1.6       cgd 	}
    200       1.29   mycroft #endif
    201       1.45   thorpej 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_PREATA;
    202       1.45   thorpej 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
    203       1.30      matt 	if (wdc_cf_flags & WDC_OPTIONS_32)
    204       1.45   thorpej 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA32;
    205       1.30      matt 	if (wdc_cf_flags & WDC_OPTIONS_ATA_NOSTREAM)
    206       1.45   thorpej 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_ATA_NOSTREAM;
    207       1.30      matt 	if (wdc_cf_flags & WDC_OPTIONS_ATAPI_NOSTREAM)
    208       1.45   thorpej 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_ATAPI_NOSTREAM;
    209       1.30      matt 
    210       1.45   thorpej 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
    211       1.42   thorpej 	sc->wdc_chanlist[0] = &sc->ata_channel;
    212       1.45   thorpej 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
    213       1.45   thorpej 	sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
    214       1.42   thorpej 	sc->ata_channel.ch_channel = 0;
    215       1.45   thorpej 	sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
    216       1.42   thorpej 	sc->ata_channel.ch_queue = &sc->wdc_chqueue;
    217       1.48    bouyer 	sc->ata_channel.ch_ndrive = 2;
    218       1.43   mycroft 	wdc_init_shadow_regs(&sc->ata_channel);
    219       1.30      matt 
    220       1.30      matt 	printf("\n");
    221       1.30      matt 
    222       1.43   mycroft 	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
    223       1.43   mycroft 	    IST_EDGE, IPL_BIO, wdcintr, &sc->ata_channel);
    224       1.43   mycroft 
    225       1.42   thorpej 	wdcattach(&sc->ata_channel);
    226        1.1       cgd }
    227        1.1       cgd 
    228       1.29   mycroft #if 0
    229        1.1       cgd static void
    230       1.44   thorpej wdc_isa_dma_setup(struct wdc_isa_softc *sc)
    231        1.1       cgd {
    232       1.16   thorpej 	bus_size_t maxsize;
    233       1.16   thorpej 
    234       1.16   thorpej 	if ((maxsize = isa_dmamaxsize(sc->sc_ic, sc->sc_drq)) < MAXPHYS) {
    235       1.17   thorpej 		printf("%s: max DMA size %lu is less than required %d\n",
    236       1.17   thorpej 		    sc->sc_wdcdev.sc_dev.dv_xname, (u_long)maxsize, MAXPHYS);
    237       1.45   thorpej 		sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA;
    238       1.31      fvdl 		return;
    239       1.31      fvdl 	}
    240       1.31      fvdl 
    241       1.31      fvdl 	if (isa_drq_alloc(sc->sc_ic, sc->sc_drq) != 0) {
    242       1.31      fvdl 		printf("%s: can't reserve drq %d\n",
    243       1.31      fvdl 		    sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq);
    244       1.45   thorpej 		sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA;
    245       1.16   thorpej 		return;
    246       1.16   thorpej 	}
    247       1.16   thorpej 
    248        1.7   thorpej 	if (isa_dmamap_create(sc->sc_ic, sc->sc_drq,
    249        1.1       cgd 	    MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
    250        1.1       cgd 		printf("%s: can't create map for drq %d\n",
    251        1.1       cgd 		    sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq);
    252       1.45   thorpej 		sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA;
    253        1.1       cgd 	}
    254        1.1       cgd }
    255        1.1       cgd 
    256       1.10    bouyer static int
    257       1.44   thorpej wdc_isa_dma_init(void *v, int channel, int drive, void *databuf,
    258       1.44   thorpej     size_t datalen, int read)
    259        1.1       cgd {
    260       1.10    bouyer 	struct wdc_isa_softc *sc = v;
    261        1.1       cgd 
    262       1.13   mycroft 	isa_dmastart(sc->sc_ic, sc->sc_drq, databuf, datalen, NULL,
    263       1.13   mycroft 	    (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND,
    264        1.1       cgd 	    BUS_DMA_NOWAIT);
    265       1.10    bouyer 	return 0;
    266        1.1       cgd }
    267        1.1       cgd 
    268        1.1       cgd static void
    269       1.44   thorpej wdc_isa_dma_start(void *v, int channel, int drive)
    270       1.10    bouyer {
    271       1.10    bouyer 	/* nothing to do */
    272       1.10    bouyer }
    273       1.10    bouyer 
    274       1.10    bouyer static int
    275       1.44   thorpej wdc_isa_dma_finish(void *v, int channel, int drive, int read)
    276        1.1       cgd {
    277       1.10    bouyer 	struct wdc_isa_softc *sc = v;
    278        1.1       cgd 
    279        1.7   thorpej 	isa_dmadone(sc->sc_ic, sc->sc_drq);
    280       1.10    bouyer 	return 0;
    281        1.1       cgd }
    282       1.29   mycroft #endif
    283