wdc_isa.c revision 1.24
1 /* $NetBSD: wdc_isa.c,v 1.24 2002/01/07 21:47:13 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Onno van der Linden. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: wdc_isa.c,v 1.24 2002/01/07 21:47:13 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/bus.h> 48 #include <machine/intr.h> 49 50 #include <dev/isa/isavar.h> 51 #include <dev/isa/isadmavar.h> 52 53 #include <dev/ata/atavar.h> 54 #include <dev/ic/wdcvar.h> 55 56 #define WDC_ISA_REG_NPORTS 8 57 #define WDC_ISA_AUXREG_OFFSET 0x206 58 #define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */ 59 60 /* options passed via the 'flags' config keyword */ 61 #define WDC_OPTIONS_32 0x01 /* try to use 32bit data I/O */ 62 #define WDC_OPTIONS_SINGLE_DRIVE 0x02 /* Don't probe second drive */ 63 #define WDC_OPTIONS_ATA_NOSTREAM 0x04 64 #define WDC_OPTIONS_ATAPI_NOSTREAM 0x08 65 66 struct wdc_isa_softc { 67 struct wdc_softc sc_wdcdev; 68 struct channel_softc *wdc_chanptr; 69 struct channel_softc wdc_channel; 70 isa_chipset_tag_t sc_ic; 71 void *sc_ih; 72 int sc_drq; 73 }; 74 75 int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); 76 void wdc_isa_attach __P((struct device *, struct device *, void *)); 77 78 struct cfattach wdc_isa_ca = { 79 sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach 80 }; 81 82 static void wdc_isa_dma_setup __P((struct wdc_isa_softc *)); 83 static int wdc_isa_dma_init __P((void*, int, int, void *, size_t, int)); 84 static void wdc_isa_dma_start __P((void*, int, int)); 85 static int wdc_isa_dma_finish __P((void*, int, int, int)); 86 87 int 88 wdc_isa_probe(parent, match, aux) 89 struct device *parent; 90 struct cfdata *match; 91 void *aux; 92 { 93 struct channel_softc ch; 94 struct isa_attach_args *ia = aux; 95 int result = 0; 96 97 if (ia->ia_nio < 1) 98 return (0); 99 if (ia->ia_nirq < 1) 100 return (0); 101 102 if (ISA_DIRECT_CONFIG(ia)) 103 return (0); 104 105 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 106 return (0); 107 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 108 return (0); 109 110 memset(&ch, 0, sizeof(ch)); 111 112 ch.cmd_iot = ia->ia_iot; 113 114 if (bus_space_map(ch.cmd_iot, ia->ia_io[0].ir_addr, 115 WDC_ISA_REG_NPORTS, 0, &ch.cmd_ioh)) 116 goto out; 117 118 ch.ctl_iot = ia->ia_iot; 119 if (bus_space_map(ch.ctl_iot, ia->ia_io[0].ir_addr + 120 WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 0, &ch.ctl_ioh)) 121 goto outunmap; 122 123 result = wdcprobe(&ch); 124 if (result) { 125 ia->ia_nio = 1; 126 ia->ia_io[0].ir_size = WDC_ISA_REG_NPORTS; 127 128 ia->ia_nirq = 1; 129 130 ia->ia_niomem = 0; 131 } 132 133 bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_ISA_AUXREG_NPORTS); 134 outunmap: 135 bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_ISA_REG_NPORTS); 136 out: 137 return (result); 138 } 139 140 void 141 wdc_isa_attach(parent, self, aux) 142 struct device *parent, *self; 143 void *aux; 144 { 145 struct wdc_isa_softc *sc = (void *)self; 146 struct isa_attach_args *ia = aux; 147 148 printf("\n"); 149 150 sc->wdc_channel.cmd_iot = ia->ia_iot; 151 sc->wdc_channel.ctl_iot = ia->ia_iot; 152 sc->sc_ic = ia->ia_ic; 153 if (bus_space_map(sc->wdc_channel.cmd_iot, ia->ia_io[0].ir_addr, 154 WDC_ISA_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh) || 155 bus_space_map(sc->wdc_channel.ctl_iot, 156 ia->ia_io[0].ir_addr + WDC_ISA_AUXREG_OFFSET, 157 WDC_ISA_AUXREG_NPORTS, 0, &sc->wdc_channel.ctl_ioh)) { 158 printf("%s: couldn't map registers\n", 159 sc->sc_wdcdev.sc_dev.dv_xname); 160 } 161 sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot; 162 sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh; 163 164 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 165 IST_EDGE, IPL_BIO, wdcintr, &sc->wdc_channel); 166 167 if (ia->ia_ndrq > 0 && ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT) { 168 sc->sc_drq = ia->ia_drq[0].ir_drq; 169 170 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA; 171 sc->sc_wdcdev.dma_arg = sc; 172 sc->sc_wdcdev.dma_init = wdc_isa_dma_init; 173 sc->sc_wdcdev.dma_start = wdc_isa_dma_start; 174 sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish; 175 wdc_isa_dma_setup(sc); 176 } 177 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA; 178 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_32) 179 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32; 180 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_SINGLE_DRIVE) 181 sc->sc_wdcdev.cap |= WDC_CAPABILITY_SINGLE_DRIVE; 182 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_ATA_NOSTREAM) 183 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATA_NOSTREAM; 184 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags 185 & WDC_OPTIONS_ATAPI_NOSTREAM) 186 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATAPI_NOSTREAM; 187 sc->sc_wdcdev.PIO_cap = 0; 188 sc->wdc_chanptr = &sc->wdc_channel; 189 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 190 sc->sc_wdcdev.nchannels = 1; 191 sc->wdc_channel.channel = 0; 192 sc->wdc_channel.wdc = &sc->sc_wdcdev; 193 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 194 M_DEVBUF, M_NOWAIT); 195 if (sc->wdc_channel.ch_queue == NULL) { 196 printf("%s: can't allocate memory for command queue", 197 sc->sc_wdcdev.sc_dev.dv_xname); 198 return; 199 } 200 wdcattach(&sc->wdc_channel); 201 } 202 203 static void 204 wdc_isa_dma_setup(sc) 205 struct wdc_isa_softc *sc; 206 { 207 bus_size_t maxsize; 208 209 if ((maxsize = isa_dmamaxsize(sc->sc_ic, sc->sc_drq)) < MAXPHYS) { 210 printf("%s: max DMA size %lu is less than required %d\n", 211 sc->sc_wdcdev.sc_dev.dv_xname, (u_long)maxsize, MAXPHYS); 212 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 213 return; 214 } 215 216 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 217 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 218 printf("%s: can't create map for drq %d\n", 219 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 220 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 221 } 222 } 223 224 static int 225 wdc_isa_dma_init(v, channel, drive, databuf, datalen, read) 226 void *v; 227 void *databuf; 228 size_t datalen; 229 int read; 230 { 231 struct wdc_isa_softc *sc = v; 232 233 isa_dmastart(sc->sc_ic, sc->sc_drq, databuf, datalen, NULL, 234 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 235 BUS_DMA_NOWAIT); 236 return 0; 237 } 238 239 static void 240 wdc_isa_dma_start(v, channel, drive) 241 void *v; 242 int channel, drive; 243 { 244 /* nothing to do */ 245 } 246 247 static int 248 wdc_isa_dma_finish(v, channel, drive, read) 249 void *v; 250 int channel, drive; 251 int read; 252 { 253 struct wdc_isa_softc *sc = v; 254 255 isa_dmadone(sc->sc_ic, sc->sc_drq); 256 return 0; 257 } 258
Indexes created Tue Sep 30 20:09:53 GMT 2025