1 /* $NetBSD: aceride.c,v 1.39 2025/10/03 14:12:52 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2000, 2001 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: aceride.c,v 1.39 2025/10/03 14:12:52 thorpej Exp $"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 33 #include <dev/pci/pcivar.h> 34 #include <dev/pci/pcidevs.h> 35 #include <dev/pci/pciidereg.h> 36 #include <dev/pci/pciidevar.h> 37 #include <dev/pci/pciide_acer_reg.h> 38 39 static int acer_pcib_match(const struct pci_attach_args *); 40 static void acer_do_reset(struct ata_channel *, int); 41 static void acer_chip_map(struct pciide_softc*, const struct pci_attach_args*); 42 static void acer_setup_channel(struct ata_channel*); 43 static int acer_pci_intr(void *); 44 static int acer_dma_init(void *, int, int, void *, size_t, int); 45 46 static int aceride_match(device_t, cfdata_t, void *); 47 static void aceride_attach(device_t, device_t, void *); 48 49 struct aceride_softc { 50 struct pciide_softc pciide_sc; 51 struct pci_attach_args pcib_pa; 52 }; 53 54 CFATTACH_DECL_NEW(aceride, sizeof(struct aceride_softc), 55 aceride_match, aceride_attach, pciide_detach, NULL); 56 57 static const struct pciide_product_desc pciide_acer_products[] = { 58 { PCI_PRODUCT_ALI_M5229, 59 0, 60 "Acer Labs M5229 UDMA IDE Controller", 61 acer_chip_map, 62 }, 63 { 0, 64 0, 65 NULL, 66 NULL 67 } 68 }; 69 70 static int 71 aceride_match(device_t parent, cfdata_t match, void *aux) 72 { 73 struct pci_attach_args *pa = aux; 74 75 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI && 76 PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE && 77 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) { 78 if (pciide_lookup_product(pa->pa_id, pciide_acer_products)) 79 return (2); 80 } 81 return (0); 82 } 83 84 static void 85 aceride_attach(device_t parent, device_t self, void *aux) 86 { 87 struct pci_attach_args *pa = aux; 88 struct pciide_softc *sc = device_private(self); 89 90 sc->sc_wdcdev.sc_atac.atac_dev = self; 91 92 pciide_common_attach(sc, pa, 93 pciide_lookup_product(pa->pa_id, pciide_acer_products)); 94 } 95 96 static int 97 acer_pcib_match(const struct pci_attach_args *pa) 98 { 99 /* 100 * we need to access the PCI config space of the pcib, see 101 * acer_do_reset() 102 */ 103 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 104 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA && 105 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI && 106 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ALI_M1533) 107 return 1; 108 return 0; 109 } 110 111 static void 112 acer_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) 113 { 114 struct pciide_channel *cp; 115 int channel; 116 pcireg_t cr, interface; 117 pcireg_t rev = PCI_REVISION(pa->pa_class); 118 struct aceride_softc *acer_sc = (struct aceride_softc *)sc; 119 120 if (pciide_chipen(sc, pa) == 0) 121 return; 122 123 aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, 124 "bus-master DMA support present"); 125 pciide_mapreg_dma(sc, pa); 126 aprint_verbose("\n"); 127 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32; 128 if (sc->sc_dma_ok) { 129 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 130 if (rev >= 0x20) { 131 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA; 132 if (rev >= 0xC7) 133 sc->sc_wdcdev.sc_atac.atac_udma_cap = 6; 134 else if (rev >= 0xC4) 135 sc->sc_wdcdev.sc_atac.atac_udma_cap = 5; 136 else if (rev >= 0xC2) 137 sc->sc_wdcdev.sc_atac.atac_udma_cap = 4; 138 else 139 sc->sc_wdcdev.sc_atac.atac_udma_cap = 2; 140 } 141 sc->sc_wdcdev.irqack = pciide_irqack; 142 if (rev <= 0xc4) { 143 sc->sc_wdcdev.dma_init = acer_dma_init; 144 aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, 145 "using PIO transfers above 137GB as workaround for " 146 "48bit DMA access bug, expect reduced performance\n"); 147 } 148 } 149 150 sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; 151 sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; 152 sc->sc_wdcdev.sc_atac.atac_set_modes = acer_setup_channel; 153 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; 154 sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; 155 sc->sc_wdcdev.wdc_maxdrives = 2; 156 157 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CDRC, 158 (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CDRC) | 159 ACER_CDRC_DMA_EN) & ~ACER_CDRC_FIFO_DISABLE); 160 161 /* Enable "microsoft register bits" R/W. */ 162 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR3, 163 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR3) | ACER_CCAR3_PI); 164 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR1, 165 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR1) & 166 ~(ACER_CHANSTATUS_RO|PCIIDE_CHAN_RO(0)|PCIIDE_CHAN_RO(1))); 167 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR2, 168 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR2) & 169 ~ACER_CHANSTATUSREGS_RO); 170 cr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG); 171 cr |= (PCIIDE_CHANSTATUS_EN << PCI_INTERFACE_SHIFT); 172 173 /* 174 * some BIOSes (port-cats ABLE) enable native mode, but don't 175 * setup everything correctly, so allow the forcing of 176 * compat mode 177 */ 178 if (device_getprop_bool(sc->sc_wdcdev.sc_atac.atac_dev, 179 "ali1543-ide-force-compat-mode")) { 180 cr &= ~((PCIIDE_INTERFACE_PCI(0) 181 | PCIIDE_INTERFACE_PCI(1)) 182 << PCI_INTERFACE_SHIFT); 183 } 184 185 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG, cr); 186 /* Don't use cr, re-read the real register content instead */ 187 interface = PCI_INTERFACE(pci_conf_read(sc->sc_pc, sc->sc_tag, 188 PCI_CLASS_REG)); 189 190 if (rev >= 0xC2) { 191 /* From FreeBSD: use device interrupt as byte count end */ 192 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_0x4A, 193 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4A) 194 | ACER_0x4A_BCEINT); 195 196 /* From linux: enable "Cable Detection" */ 197 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_0x4B, 198 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4B) 199 | ACER_0x4B_CDETECT); 200 } 201 202 wdc_allocate_regs(&sc->sc_wdcdev); 203 if (rev == 0xC3) { 204 /* install reset bug workaround */ 205 if (pci_find_device(&acer_sc->pcib_pa, acer_pcib_match) == 0) { 206 aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev, 207 "WARNING: can't find pci-isa bridge\n"); 208 } else 209 sc->sc_wdcdev.reset = acer_do_reset; 210 } 211 212 for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; 213 channel++) { 214 cp = &sc->pciide_channels[channel]; 215 if (pciide_chansetup(sc, channel, interface) == 0) 216 continue; 217 if ((interface & PCIIDE_CHAN_EN(channel)) == 0) { 218 aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, 219 "%s channel ignored (disabled)\n", cp->name); 220 cp->ata_channel.ch_flags |= ATACH_DISABLED; 221 continue; 222 } 223 /* newer controllers seems to lack the ACER_CHIDS. Sigh */ 224 pciide_mapchan(pa, cp, interface, 225 (rev >= 0xC2) ? pciide_pci_intr : acer_pci_intr); 226 } 227 } 228 229 static void 230 acer_do_reset(struct ata_channel *chp, int poll) 231 { 232 struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); 233 struct aceride_softc *acer_sc = (struct aceride_softc *)sc; 234 u_int8_t reg; 235 236 /* 237 * From OpenSolaris: after a reset we need to disable/enable the 238 * corresponding channel, or data corruption will occur in 239 * UltraDMA modes 240 */ 241 242 wdc_do_reset(chp, poll); 243 reg = pciide_pci_read(acer_sc->pcib_pa.pa_pc, acer_sc->pcib_pa.pa_tag, 244 ACER_PCIB_CTRL); 245 pciide_pci_write(acer_sc->pcib_pa.pa_pc, acer_sc->pcib_pa.pa_tag, 246 ACER_PCIB_CTRL, reg & ~ACER_PCIB_CTRL_ENCHAN(chp->ch_channel)); 247 delay(1000); 248 pciide_pci_write(acer_sc->pcib_pa.pa_pc, acer_sc->pcib_pa.pa_tag, 249 ACER_PCIB_CTRL, reg); 250 } 251 252 static void 253 acer_setup_channel(struct ata_channel *chp) 254 { 255 struct ata_drive_datas *drvp; 256 int drive, s; 257 u_int32_t acer_fifo_udma; 258 u_int32_t idedma_ctl; 259 struct pciide_channel *cp = (struct pciide_channel*)chp; 260 struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); 261 262 idedma_ctl = 0; 263 acer_fifo_udma = pci_conf_read(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA); 264 ATADEBUG_PRINT(("acer_setup_channel: old fifo/udma reg 0x%x\n", 265 acer_fifo_udma), DEBUG_PROBE); 266 /* setup DMA if needed */ 267 pciide_channel_dma_setup(cp); 268 269 if ((chp->ch_drive[0].drive_flags | chp->ch_drive[1].drive_flags) & 270 ATA_DRIVE_UDMA) { /* check 80 pins cable */ 271 if (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4A) & 272 ACER_0x4A_80PIN(chp->ch_channel)) { 273 if (chp->ch_drive[0].UDMA_mode > 2) 274 chp->ch_drive[0].UDMA_mode = 2; 275 if (chp->ch_drive[1].UDMA_mode > 2) 276 chp->ch_drive[1].UDMA_mode = 2; 277 } 278 } 279 280 for (drive = 0; drive < 2; drive++) { 281 drvp = &chp->ch_drive[drive]; 282 /* If no drive, skip */ 283 if (drvp->drive_type == ATA_DRIVET_NONE) 284 continue; 285 ATADEBUG_PRINT(("acer_setup_channel: old timings reg for " 286 "channel %d drive %d 0x%x\n", chp->ch_channel, drive, 287 pciide_pci_read(sc->sc_pc, sc->sc_tag, 288 ACER_IDETIM(chp->ch_channel, drive))), DEBUG_PROBE); 289 /* clear FIFO/DMA mode */ 290 acer_fifo_udma &= ~(ACER_FTH_OPL(chp->ch_channel, drive, 0x3) | 291 ACER_UDMA_EN(chp->ch_channel, drive) | 292 ACER_UDMA_TIM(chp->ch_channel, drive, 0x7)); 293 294 /* (U)DMA doesn't work with ATAPI devices */ 295 if (drvp->drive_type == ATA_DRIVET_ATAPI) { 296 s = splbio(); 297 drvp->drive_flags &= ~(ATA_DRIVE_DMA|ATA_DRIVE_UDMA); 298 splx(s); 299 } 300 301 /* add timing values, setup DMA if needed */ 302 if ((drvp->drive_flags & ATA_DRIVE_DMA) == 0 && 303 (drvp->drive_flags & ATA_DRIVE_UDMA) == 0) { 304 acer_fifo_udma |= 305 ACER_FTH_OPL(chp->ch_channel, drive, 0x1); 306 goto pio; 307 } 308 309 acer_fifo_udma |= ACER_FTH_OPL(chp->ch_channel, drive, 0x2); 310 if (drvp->drive_flags & ATA_DRIVE_UDMA) { 311 /* use Ultra/DMA */ 312 s = splbio(); 313 drvp->drive_flags &= ~ATA_DRIVE_DMA; 314 splx(s); 315 acer_fifo_udma |= ACER_UDMA_EN(chp->ch_channel, drive); 316 acer_fifo_udma |= 317 ACER_UDMA_TIM(chp->ch_channel, drive, 318 acer_udma[drvp->UDMA_mode]); 319 /* XXX disable if one drive < UDMA3 ? */ 320 if (drvp->UDMA_mode >= 3) { 321 pciide_pci_write(sc->sc_pc, sc->sc_tag, 322 ACER_0x4B, 323 pciide_pci_read(sc->sc_pc, sc->sc_tag, 324 ACER_0x4B) | ACER_0x4B_UDMA66); 325 } 326 } else { 327 /* 328 * use Multiword DMA 329 * Timings will be used for both PIO and DMA, 330 * so adjust DMA mode if needed 331 */ 332 if (drvp->PIO_mode > (drvp->DMA_mode + 2)) 333 drvp->PIO_mode = drvp->DMA_mode + 2; 334 if (drvp->DMA_mode + 2 > (drvp->PIO_mode)) 335 drvp->DMA_mode = (drvp->PIO_mode > 2) ? 336 drvp->PIO_mode - 2 : 0; 337 if (drvp->DMA_mode == 0) 338 drvp->PIO_mode = 0; 339 } 340 idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); 341 pio: pciide_pci_write(sc->sc_pc, sc->sc_tag, 342 ACER_IDETIM(chp->ch_channel, drive), 343 acer_pio[drvp->PIO_mode]); 344 } 345 ATADEBUG_PRINT(("acer_setup_channel: new fifo/udma reg 0x%x\n", 346 acer_fifo_udma), DEBUG_PROBE); 347 pci_conf_write(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA, acer_fifo_udma); 348 if (idedma_ctl != 0) { 349 /* Add software bits in status register */ 350 bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0, 351 idedma_ctl); 352 } 353 } 354 355 static int 356 acer_pci_intr(void *arg) 357 { 358 struct pciide_softc *sc = arg; 359 struct pciide_channel *cp; 360 struct ata_channel *wdc_cp; 361 int i, rv, crv; 362 u_int32_t chids; 363 364 rv = 0; 365 chids = pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CHIDS); 366 for (i = 0; i < sc->sc_wdcdev.sc_atac.atac_nchannels; i++) { 367 cp = &sc->pciide_channels[i]; 368 wdc_cp = &cp->ata_channel; 369 /* If a compat channel skip. */ 370 if (cp->compat) 371 continue; 372 if (chids & ACER_CHIDS_INT(i)) { 373 crv = wdcintr(wdc_cp); 374 if (crv == 0) { 375 aprint_error("%s:%d: bogus intr\n", 376 device_xname( 377 sc->sc_wdcdev.sc_atac.atac_dev), i); 378 pciide_irqack(wdc_cp); 379 } else 380 rv = 1; 381 } 382 } 383 return rv; 384 } 385 386 static int 387 acer_dma_init(void *v, int channel, int drive, void *databuf, 388 size_t datalen, int flags) 389 { 390 391 /* use PIO for LBA48 transfer */ 392 if (flags & WDC_DMA_LBA48) 393 return EINVAL; 394 395 return pciide_dma_init(v, channel, drive, databuf, datalen, flags); 396 } 397
Indexes created Wed Oct 15 07:09:58 GMT 2025