icside.c revision 1.2.2.4
1 1.2.2.4 jdolecek /* $NetBSD: icside.c,v 1.2.2.4 2002/10/10 18:30:28 jdolecek Exp $ */ 2 1.2.2.2 thorpej 3 1.2.2.2 thorpej /* 4 1.2.2.2 thorpej * Copyright (c) 1997-1998 Mark Brinicombe 5 1.2.2.2 thorpej * Copyright (c) 1997-1998 Causality Limited 6 1.2.2.2 thorpej * 7 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 9 1.2.2.2 thorpej * are met: 10 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 15 1.2.2.2 thorpej * 3. All advertising materials mentioning features or use of this software 16 1.2.2.2 thorpej * must display the following acknowledgement: 17 1.2.2.2 thorpej * This product includes software developed by Mark Brinicombe 18 1.2.2.2 thorpej * for the NetBSD Project. 19 1.2.2.2 thorpej * 4. The name of the author may not be used to endorse or promote products 20 1.2.2.2 thorpej * derived from this software without specific prior written permission. 21 1.2.2.2 thorpej * 22 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 1.2.2.2 thorpej * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 1.2.2.2 thorpej * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 1.2.2.2 thorpej * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 1.2.2.2 thorpej * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 1.2.2.2 thorpej * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 1.2.2.2 thorpej * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 1.2.2.2 thorpej * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 1.2.2.2 thorpej * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 1.2.2.2 thorpej * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 1.2.2.2 thorpej * 33 1.2.2.2 thorpej * Probe and attach functions to use generic IDE driver for the ICS IDE podule 34 1.2.2.2 thorpej */ 35 1.2.2.2 thorpej 36 1.2.2.2 thorpej /* 37 1.2.2.2 thorpej * Thanks to David Baildon for loaning an IDE card for the development 38 1.2.2.2 thorpej * of this driver. 39 1.2.2.2 thorpej * Thanks to Ian Copestake and David Baildon for providing register mapping 40 1.2.2.2 thorpej * information 41 1.2.2.2 thorpej */ 42 1.2.2.2 thorpej 43 1.2.2.2 thorpej #include <sys/param.h> 44 1.2.2.4 jdolecek 45 1.2.2.4 jdolecek __KERNEL_RCSID(0, "$NetBSD: icside.c,v 1.2.2.4 2002/10/10 18:30:28 jdolecek Exp $"); 46 1.2.2.4 jdolecek 47 1.2.2.2 thorpej #include <sys/systm.h> 48 1.2.2.2 thorpej #include <sys/conf.h> 49 1.2.2.2 thorpej #include <sys/device.h> 50 1.2.2.2 thorpej #include <sys/malloc.h> 51 1.2.2.2 thorpej 52 1.2.2.2 thorpej #include <machine/intr.h> 53 1.2.2.2 thorpej #include <machine/io.h> 54 1.2.2.2 thorpej #include <machine/bus.h> 55 1.2.2.2 thorpej #include <acorn32/podulebus/podulebus.h> 56 1.2.2.2 thorpej #include <acorn32/podulebus/icsidereg.h> 57 1.2.2.2 thorpej 58 1.2.2.2 thorpej #include <dev/ata/atavar.h> 59 1.2.2.2 thorpej #include <dev/ic/wdcvar.h> 60 1.2.2.2 thorpej #include <dev/podulebus/podules.h> 61 1.2.2.2 thorpej 62 1.2.2.2 thorpej /* 63 1.2.2.2 thorpej * ICS IDE podule device. 64 1.2.2.2 thorpej * 65 1.2.2.2 thorpej * This probes and attaches the top level ICS IDE device to the podulebus. 66 1.2.2.2 thorpej * It then configures any children of the ICS IDE device. 67 1.2.2.2 thorpej * The child is expected to be a wdc device using icside attachments. 68 1.2.2.2 thorpej */ 69 1.2.2.2 thorpej 70 1.2.2.2 thorpej /* 71 1.2.2.2 thorpej * ICS IDE card softc structure. 72 1.2.2.2 thorpej * 73 1.2.2.2 thorpej * Contains the device node and podule information. 74 1.2.2.2 thorpej */ 75 1.2.2.2 thorpej 76 1.2.2.2 thorpej struct icside_softc { 77 1.2.2.2 thorpej struct wdc_softc sc_wdcdev; /* common wdc definitions */ 78 1.2.2.2 thorpej podule_t *sc_podule; /* Our podule */ 79 1.2.2.2 thorpej int sc_podule_number; /* Our podule number */ 80 1.2.2.2 thorpej struct bus_space sc_tag; /* custom tag */ 81 1.2.2.2 thorpej struct podule_attach_args *sc_pa; /* podule info */ 82 1.2.2.4 jdolecek bus_space_tag_t sc_latchiot; /* EEPROM page latch etc */ 83 1.2.2.4 jdolecek bus_space_handle_t sc_latchioh; 84 1.2.2.4 jdolecek void *sc_shutdownhook; 85 1.2.2.4 jdolecek struct channel_softc *sc_chp[ICSIDE_MAX_CHANNELS]; 86 1.2.2.2 thorpej struct icside_channel { 87 1.2.2.2 thorpej struct channel_softc wdc_channel; /* generic part */ 88 1.2.2.2 thorpej void *ic_ih; /* interrupt handler */ 89 1.2.2.2 thorpej struct evcnt ic_intrcnt; /* interrupt count */ 90 1.2.2.2 thorpej u_int ic_irqaddr; /* interrupt flag */ 91 1.2.2.2 thorpej u_int ic_irqmask; /* location */ 92 1.2.2.2 thorpej bus_space_tag_t ic_irqiot; /* Bus space tag */ 93 1.2.2.2 thorpej bus_space_handle_t ic_irqioh; /* handle for IRQ */ 94 1.2.2.4 jdolecek } sc_chan[ICSIDE_MAX_CHANNELS]; 95 1.2.2.2 thorpej }; 96 1.2.2.2 thorpej 97 1.2.2.4 jdolecek int icside_probe(struct device *, struct cfdata *, void *); 98 1.2.2.4 jdolecek void icside_attach(struct device *, struct device *, void *); 99 1.2.2.4 jdolecek int icside_intr(void *); 100 1.2.2.4 jdolecek void icside_v6_shutdown(void *); 101 1.2.2.2 thorpej 102 1.2.2.4 jdolecek CFATTACH_DECL(icside, sizeof(struct icside_softc), 103 1.2.2.4 jdolecek icside_probe, icside_attach, NULL, NULL); 104 1.2.2.2 thorpej 105 1.2.2.2 thorpej /* 106 1.2.2.2 thorpej * Define prototypes for custom bus space functions. 107 1.2.2.2 thorpej */ 108 1.2.2.2 thorpej 109 1.2.2.2 thorpej bs_rm_2_proto(icside); 110 1.2.2.2 thorpej bs_wm_2_proto(icside); 111 1.2.2.2 thorpej 112 1.2.2.2 thorpej #define MAX_CHANNELS 2 113 1.2.2.2 thorpej 114 1.2.2.2 thorpej /* 115 1.2.2.2 thorpej * Define a structure for describing the different card versions 116 1.2.2.2 thorpej */ 117 1.2.2.2 thorpej struct ide_version { 118 1.2.2.2 thorpej int id; /* IDE card ID */ 119 1.2.2.2 thorpej int modspace; /* Type of podule space */ 120 1.2.2.2 thorpej int channels; /* Number of channels */ 121 1.2.2.2 thorpej const char *name; /* name */ 122 1.2.2.4 jdolecek int latchreg; /* EEPROM latch register */ 123 1.2.2.2 thorpej int ideregs[MAX_CHANNELS]; /* IDE registers */ 124 1.2.2.2 thorpej int auxregs[MAX_CHANNELS]; /* AUXSTAT register */ 125 1.2.2.2 thorpej int irqregs[MAX_CHANNELS]; /* IRQ register */ 126 1.2.2.2 thorpej int irqstatregs[MAX_CHANNELS]; 127 1.2.2.4 jdolecek } const ide_versions[] = { 128 1.2.2.2 thorpej /* A3IN - Unsupported */ 129 1.2.2.2 thorpej /* { 0, 0, 0, NULL, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } },*/ 130 1.2.2.2 thorpej /* A3USER - Unsupported */ 131 1.2.2.2 thorpej /* { 1, 0, 0, NULL, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } },*/ 132 1.2.2.2 thorpej /* ARCIN V6 - Supported */ 133 1.2.2.4 jdolecek { 3, 0, 2, "ARCIN V6", V6_ADDRLATCH, 134 1.2.2.2 thorpej { V6_P_IDE_BASE, V6_S_IDE_BASE }, 135 1.2.2.2 thorpej { V6_P_AUX_BASE, V6_S_AUX_BASE }, 136 1.2.2.2 thorpej { V6_P_IRQ_BASE, V6_S_IRQ_BASE }, 137 1.2.2.2 thorpej { V6_P_IRQSTAT_BASE, V6_S_IRQSTAT_BASE } 138 1.2.2.2 thorpej }, 139 1.2.2.2 thorpej /* ARCIN V5 - Supported (ID reg not supported so reads as 15) */ 140 1.2.2.4 jdolecek { 15, 1, 1, "ARCIN V5", -1, 141 1.2.2.4 jdolecek { V5_IDE_BASE, -1 }, 142 1.2.2.4 jdolecek { V5_AUX_BASE, -1 }, 143 1.2.2.4 jdolecek { V5_IRQ_BASE, -1 }, 144 1.2.2.4 jdolecek { V5_IRQSTAT_BASE, -1 } 145 1.2.2.2 thorpej } 146 1.2.2.2 thorpej }; 147 1.2.2.2 thorpej 148 1.2.2.2 thorpej /* 149 1.2.2.2 thorpej * Card probe function 150 1.2.2.2 thorpej * 151 1.2.2.2 thorpej * Just match the manufacturer and podule ID's 152 1.2.2.2 thorpej */ 153 1.2.2.2 thorpej 154 1.2.2.2 thorpej int 155 1.2.2.4 jdolecek icside_probe(struct device *parent, struct cfdata *cf, void *aux) 156 1.2.2.2 thorpej { 157 1.2.2.2 thorpej struct podule_attach_args *pa = (void *)aux; 158 1.2.2.4 jdolecek 159 1.2.2.3 jdolecek return (pa->pa_product == PODULE_ICS_IDE); 160 1.2.2.2 thorpej } 161 1.2.2.2 thorpej 162 1.2.2.2 thorpej /* 163 1.2.2.2 thorpej * Card attach function 164 1.2.2.2 thorpej * 165 1.2.2.2 thorpej * Identify the card version and configure any children. 166 1.2.2.2 thorpej */ 167 1.2.2.2 thorpej 168 1.2.2.2 thorpej void 169 1.2.2.4 jdolecek icside_attach(struct device *parent, struct device *self, void *aux) 170 1.2.2.2 thorpej { 171 1.2.2.2 thorpej struct icside_softc *sc = (void *)self; 172 1.2.2.2 thorpej struct podule_attach_args *pa = (void *)aux; 173 1.2.2.2 thorpej bus_space_tag_t iot; 174 1.2.2.2 thorpej bus_space_handle_t ioh; 175 1.2.2.4 jdolecek const struct ide_version *ide = NULL; 176 1.2.2.2 thorpej u_int iobase; 177 1.2.2.2 thorpej int channel; 178 1.2.2.2 thorpej struct icside_channel *icp; 179 1.2.2.2 thorpej struct channel_softc *cp; 180 1.2.2.2 thorpej int loop; 181 1.2.2.2 thorpej int id; 182 1.2.2.2 thorpej 183 1.2.2.2 thorpej /* Note the podule number and validate */ 184 1.2.2.2 thorpej 185 1.2.2.2 thorpej if (pa->pa_podule_number == -1) 186 1.2.2.2 thorpej panic("Podule has disappeared !"); 187 1.2.2.2 thorpej 188 1.2.2.2 thorpej sc->sc_podule_number = pa->pa_podule_number; 189 1.2.2.2 thorpej sc->sc_podule = pa->pa_podule; 190 1.2.2.2 thorpej podules[sc->sc_podule_number].attached = 1; 191 1.2.2.2 thorpej 192 1.2.2.2 thorpej /* The ID register if present is always in FAST podule space */ 193 1.2.2.2 thorpej iot = pa->pa_iot; 194 1.2.2.2 thorpej if (bus_space_map(iot, pa->pa_podule->fast_base + 195 1.2.2.2 thorpej ID_REGISTER_OFFSET, ID_REGISTER_SPACE, 0, &ioh)) { 196 1.2.2.2 thorpej printf("%s: cannot map ID register\n", self->dv_xname); 197 1.2.2.2 thorpej return; 198 1.2.2.2 thorpej } 199 1.2.2.2 thorpej 200 1.2.2.2 thorpej for (id = 0, loop = 0; loop < 4; ++loop) 201 1.2.2.2 thorpej id |= (bus_space_read_1(iot, ioh, loop) & 1) << loop; 202 1.2.2.2 thorpej 203 1.2.2.2 thorpej /* Do we recognise the ID ? */ 204 1.2.2.2 thorpej for (loop = 0; loop < sizeof(ide_versions) / sizeof(struct ide_version); 205 1.2.2.2 thorpej ++loop) { 206 1.2.2.2 thorpej if (ide_versions[loop].id == id) { 207 1.2.2.2 thorpej ide = &ide_versions[loop]; 208 1.2.2.2 thorpej break; 209 1.2.2.2 thorpej } 210 1.2.2.2 thorpej } 211 1.2.2.2 thorpej 212 1.2.2.2 thorpej /* Report the version and name */ 213 1.2.2.2 thorpej if (ide == NULL || ide->name == NULL) { 214 1.2.2.2 thorpej printf(": rev %d is unsupported\n", id); 215 1.2.2.2 thorpej return; 216 1.2.2.2 thorpej } else 217 1.2.2.2 thorpej printf(": %s\n", ide->name); 218 1.2.2.2 thorpej 219 1.2.2.4 jdolecek if (ide->latchreg != -1) { 220 1.2.2.4 jdolecek sc->sc_latchiot = pa->pa_iot; 221 1.2.2.4 jdolecek if (bus_space_map(iot, pa->pa_podule->fast_base + 222 1.2.2.4 jdolecek ide->latchreg, 1, 0, &sc->sc_latchioh)) { 223 1.2.2.4 jdolecek printf("%s: cannot map latch register\n", 224 1.2.2.4 jdolecek self->dv_xname); 225 1.2.2.4 jdolecek return; 226 1.2.2.4 jdolecek } 227 1.2.2.4 jdolecek sc->sc_shutdownhook = 228 1.2.2.4 jdolecek shutdownhook_establish(icside_v6_shutdown, sc); 229 1.2.2.4 jdolecek } 230 1.2.2.4 jdolecek 231 1.2.2.2 thorpej /* 232 1.2.2.2 thorpej * Ok we need our own bus tag as the register spacing 233 1.2.2.2 thorpej * is not the default. 234 1.2.2.2 thorpej * 235 1.2.2.2 thorpej * For the podulebus the bus tag cookie is the shift 236 1.2.2.2 thorpej * to apply to registers 237 1.2.2.2 thorpej * So duplicate the bus space tag and change the 238 1.2.2.2 thorpej * cookie. 239 1.2.2.2 thorpej * 240 1.2.2.2 thorpej * Also while we are at it replace the default 241 1.2.2.2 thorpej * read/write mulitple short functions with 242 1.2.2.2 thorpej * optimised versions 243 1.2.2.2 thorpej */ 244 1.2.2.2 thorpej 245 1.2.2.2 thorpej sc->sc_tag = *pa->pa_iot; 246 1.2.2.2 thorpej sc->sc_tag.bs_cookie = (void *) REGISTER_SPACING_SHIFT; 247 1.2.2.2 thorpej sc->sc_tag.bs_rm_2 = icside_bs_rm_2; 248 1.2.2.2 thorpej sc->sc_tag.bs_wm_2 = icside_bs_wm_2; 249 1.2.2.2 thorpej 250 1.2.2.2 thorpej /* Initialize wdc struct */ 251 1.2.2.4 jdolecek sc->sc_wdcdev.channels = sc->sc_chp; 252 1.2.2.2 thorpej sc->sc_wdcdev.nchannels = ide->channels; 253 1.2.2.2 thorpej sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16; 254 1.2.2.2 thorpej sc->sc_wdcdev.PIO_cap = 0; 255 1.2.2.2 thorpej sc->sc_pa = pa; 256 1.2.2.2 thorpej 257 1.2.2.2 thorpej for (channel = 0; channel < ide->channels; ++channel) { 258 1.2.2.4 jdolecek icp = &sc->sc_chan[channel]; 259 1.2.2.2 thorpej sc->sc_wdcdev.channels[channel] = &icp->wdc_channel; 260 1.2.2.2 thorpej cp = &icp->wdc_channel; 261 1.2.2.2 thorpej 262 1.2.2.2 thorpej cp->channel = channel; 263 1.2.2.2 thorpej cp->wdc = &sc->sc_wdcdev; 264 1.2.2.2 thorpej cp->ch_queue = malloc(sizeof(struct channel_queue), M_DEVBUF, 265 1.2.2.2 thorpej M_NOWAIT); 266 1.2.2.2 thorpej if (cp->ch_queue == NULL) { 267 1.2.2.4 jdolecek printf("%s:%d: " 268 1.2.2.2 thorpej "can't allocate memory for command queue", 269 1.2.2.4 jdolecek sc->sc_wdcdev.sc_dev.dv_xname, channel); 270 1.2.2.2 thorpej continue; 271 1.2.2.2 thorpej } 272 1.2.2.2 thorpej cp->cmd_iot = &sc->sc_tag; 273 1.2.2.2 thorpej cp->ctl_iot = &sc->sc_tag; 274 1.2.2.2 thorpej if (ide->modspace) 275 1.2.2.2 thorpej iobase = pa->pa_podule->mod_base; 276 1.2.2.2 thorpej else 277 1.2.2.2 thorpej iobase = pa->pa_podule->fast_base; 278 1.2.2.2 thorpej 279 1.2.2.2 thorpej if (bus_space_map(iot, iobase + ide->ideregs[channel], 280 1.2.2.2 thorpej IDE_REGISTER_SPACE, 0, &cp->cmd_ioh)) 281 1.2.2.2 thorpej return; 282 1.2.2.2 thorpej if (bus_space_map(iot, iobase + ide->auxregs[channel], 283 1.2.2.2 thorpej AUX_REGISTER_SPACE, 0, &cp->ctl_ioh)) 284 1.2.2.2 thorpej return; 285 1.2.2.2 thorpej icp->ic_irqiot = iot; 286 1.2.2.2 thorpej if (bus_space_map(iot, iobase + ide->irqregs[channel], 287 1.2.2.2 thorpej IRQ_REGISTER_SPACE, 0, &icp->ic_irqioh)) 288 1.2.2.2 thorpej return; 289 1.2.2.2 thorpej /* Disable interrupts */ 290 1.2.2.2 thorpej (void)bus_space_read_1(iot, icp->ic_irqioh, 0); 291 1.2.2.2 thorpej /* Call common attach routines */ 292 1.2.2.2 thorpej wdcattach(cp); 293 1.2.2.2 thorpej /* Disable interrupts */ 294 1.2.2.2 thorpej (void)bus_space_read_1(iot, icp->ic_irqioh, 0); 295 1.2.2.2 thorpej pa->pa_podule->irq_addr = iobase + ide->irqstatregs[channel]; 296 1.2.2.2 thorpej pa->pa_podule->irq_mask = IRQ_STATUS_REGISTER_MASK; 297 1.2.2.2 thorpej icp->ic_irqaddr = pa->pa_podule->irq_addr; 298 1.2.2.2 thorpej icp->ic_irqmask = pa->pa_podule->irq_mask; 299 1.2.2.2 thorpej evcnt_attach_dynamic(&icp->ic_intrcnt, EVCNT_TYPE_INTR, NULL, 300 1.2.2.2 thorpej self->dv_xname, "intr"); 301 1.2.2.2 thorpej icp->ic_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 302 1.2.2.2 thorpej icside_intr, icp, &icp->ic_intrcnt); 303 1.2.2.2 thorpej if (icp->ic_ih == NULL) { 304 1.2.2.2 thorpej printf("%s: Cannot claim interrupt %d\n", 305 1.2.2.2 thorpej sc->sc_wdcdev.sc_dev.dv_xname, 306 1.2.2.2 thorpej pa->pa_podule->interrupt); 307 1.2.2.2 thorpej continue; 308 1.2.2.2 thorpej } 309 1.2.2.2 thorpej /* Enable interrupts */ 310 1.2.2.2 thorpej bus_space_write_1(iot, icp->ic_irqioh, 0, 0); 311 1.2.2.2 thorpej } 312 1.2.2.2 thorpej } 313 1.2.2.2 thorpej 314 1.2.2.2 thorpej /* 315 1.2.2.4 jdolecek * Shutdown handler -- try to restore the card to a state where 316 1.2.2.4 jdolecek * RISC OS will see it. 317 1.2.2.4 jdolecek */ 318 1.2.2.4 jdolecek void 319 1.2.2.4 jdolecek icside_v6_shutdown(void *arg) 320 1.2.2.4 jdolecek { 321 1.2.2.4 jdolecek struct icside_softc *sc = arg; 322 1.2.2.4 jdolecek 323 1.2.2.4 jdolecek bus_space_write_1(sc->sc_latchiot, sc->sc_latchioh, 0, 0); 324 1.2.2.4 jdolecek } 325 1.2.2.4 jdolecek 326 1.2.2.4 jdolecek /* 327 1.2.2.2 thorpej * Podule interrupt handler 328 1.2.2.2 thorpej * 329 1.2.2.2 thorpej * If the interrupt was from our card pass it on to the wdc interrupt handler 330 1.2.2.2 thorpej */ 331 1.2.2.2 thorpej int 332 1.2.2.4 jdolecek icside_intr(void *arg) 333 1.2.2.2 thorpej { 334 1.2.2.2 thorpej struct icside_channel *icp = arg; 335 1.2.2.2 thorpej volatile u_char *intraddr = (volatile u_char *)icp->ic_irqaddr; 336 1.2.2.2 thorpej 337 1.2.2.2 thorpej /* XXX - not bus space yet - should really be handled by podulebus */ 338 1.2.2.2 thorpej if ((*intraddr) & icp->ic_irqmask) 339 1.2.2.2 thorpej wdcintr(&icp->wdc_channel); 340 1.2.2.2 thorpej return(0); 341 1.2.2.2 thorpej } 342
Indexes created Thu Oct 16 14:10:15 GMT 2025