optiide.c revision 1.24.2.1
1 /* $NetBSD: optiide.c,v 1.24.2.1 2012/10/09 13:36:05 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: optiide.c,v 1.24.2.1 2012/10/09 13:36:05 bouyer Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 38 #include <dev/pci/pcivar.h> 39 #include <dev/pci/pcidevs.h> 40 #include <dev/pci/pciidereg.h> 41 #include <dev/pci/pciidevar.h> 42 #include <dev/pci/pciide_opti_reg.h> 43 44 static void opti_chip_map(struct pciide_softc*, const struct pci_attach_args*); 45 static void opti_setup_channel(struct ata_channel*); 46 47 static int optiide_match(device_t, cfdata_t, void *); 48 static void optiide_attach(device_t, device_t, void *); 49 50 CFATTACH_DECL_NEW(optiide, sizeof(struct pciide_softc), 51 optiide_match, optiide_attach, NULL, NULL); 52 53 static const struct pciide_product_desc pciide_opti_products[] = { 54 { PCI_PRODUCT_OPTI_82C621, 55 0, 56 "OPTi 82c621 PCI IDE controller", 57 opti_chip_map, 58 }, 59 { PCI_PRODUCT_OPTI_82C568, 60 0, 61 "OPTi 82c568 (82c621 compatible) PCI IDE controller", 62 opti_chip_map, 63 }, 64 { PCI_PRODUCT_OPTI_82D568, 65 0, 66 "OPTi 82d568 (82c621 compatible) PCI IDE controller", 67 opti_chip_map, 68 }, 69 { 0, 70 0, 71 NULL, 72 NULL 73 } 74 }; 75 76 static int 77 optiide_match(device_t parent, cfdata_t match, void *aux) 78 { 79 struct pci_attach_args *pa = aux; 80 81 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_OPTI && 82 PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE && 83 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) { 84 if (pciide_lookup_product(pa->pa_id, pciide_opti_products)) 85 return (2); 86 } 87 return (0); 88 } 89 90 static void 91 optiide_attach(device_t parent, device_t self, void *aux) 92 { 93 struct pci_attach_args *pa = aux; 94 struct pciide_softc *sc = device_private(self); 95 96 self->dv_maxphys = MIN(parent->dv_maxphys, MACHINE_MAXPHYS); 97 98 sc->sc_wdcdev.sc_atac.atac_dev = self; 99 100 pciide_common_attach(sc, pa, 101 pciide_lookup_product(pa->pa_id, pciide_opti_products)); 102 103 } 104 105 static void 106 opti_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) 107 { 108 struct pciide_channel *cp; 109 pcireg_t interface; 110 u_int8_t init_ctrl; 111 int channel; 112 113 if (pciide_chipen(sc, pa) == 0) 114 return; 115 116 aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, 117 "bus-master DMA support present"); 118 119 /* 120 * XXXSCW: 121 * There seem to be a couple of buggy revisions/implementations 122 * of the OPTi pciide chipset. This kludge seems to fix one of 123 * the reported problems (PR/11644) but still fails for the 124 * other (PR/13151), although the latter may be due to other 125 * issues too... 126 */ 127 if (PCI_REVISION(pa->pa_class) <= 0x12) { 128 aprint_verbose(" but disabled due to chip rev. <= 0x12"); 129 sc->sc_dma_ok = 0; 130 } else 131 pciide_mapreg_dma(sc, pa); 132 133 aprint_verbose("\n"); 134 135 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA32 | ATAC_CAP_DATA16; 136 sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; 137 if (sc->sc_dma_ok) { 138 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 139 sc->sc_wdcdev.irqack = pciide_irqack; 140 sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; 141 } 142 sc->sc_wdcdev.sc_atac.atac_set_modes = opti_setup_channel; 143 144 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; 145 sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; 146 sc->sc_wdcdev.wdc_maxdrives = 2; 147 148 init_ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag, 149 OPTI_REG_INIT_CONTROL); 150 151 interface = PCI_INTERFACE(pa->pa_class); 152 153 wdc_allocate_regs(&sc->sc_wdcdev); 154 155 for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; 156 channel++) { 157 cp = &sc->pciide_channels[channel]; 158 if (pciide_chansetup(sc, channel, interface) == 0) 159 continue; 160 if (channel == 1 && 161 (init_ctrl & OPTI_INIT_CONTROL_CH2_DISABLE) != 0) { 162 aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, 163 "%s channel ignored (disabled)\n", cp->name); 164 cp->ata_channel.ch_flags |= ATACH_DISABLED; 165 continue; 166 } 167 pciide_mapchan(pa, cp, interface, pciide_pci_intr); 168 } 169 } 170 171 static void 172 opti_setup_channel(struct ata_channel *chp) 173 { 174 struct ata_drive_datas *drvp; 175 struct pciide_channel *cp = CHAN_TO_PCHAN(chp); 176 struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); 177 int drive, spd, s; 178 int mode[2]; 179 u_int8_t rv, mr; 180 181 /* 182 * The `Delay' and `Address Setup Time' fields of the 183 * Miscellaneous Register are always zero initially. 184 */ 185 mr = opti_read_config(chp, OPTI_REG_MISC) & ~OPTI_MISC_INDEX_MASK; 186 mr &= ~(OPTI_MISC_DELAY_MASK | 187 OPTI_MISC_ADDR_SETUP_MASK | 188 OPTI_MISC_INDEX_MASK); 189 190 /* Prime the control register before setting timing values */ 191 opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_DISABLE); 192 193 /* Determine the clockrate of the PCIbus the chip is attached to */ 194 spd = (int) opti_read_config(chp, OPTI_REG_STRAP); 195 spd &= OPTI_STRAP_PCI_SPEED_MASK; 196 197 /* setup DMA if needed */ 198 pciide_channel_dma_setup(cp); 199 200 for (drive = 0; drive < 2; drive++) { 201 drvp = &chp->ch_drive[drive]; 202 /* If no drive, skip */ 203 if (drvp->drive_type == ATA_DRIVET_NONE) { 204 mode[drive] = -1; 205 continue; 206 } 207 208 if ((drvp->drive_flags & ATA_DRIVE_DMA)) { 209 /* 210 * Timings will be used for both PIO and DMA, 211 * so adjust DMA mode if needed 212 */ 213 if (drvp->PIO_mode > (drvp->DMA_mode + 2)) 214 drvp->PIO_mode = drvp->DMA_mode + 2; 215 if (drvp->DMA_mode + 2 > (drvp->PIO_mode)) 216 drvp->DMA_mode = (drvp->PIO_mode > 2) ? 217 drvp->PIO_mode - 2 : 0; 218 if (drvp->DMA_mode == 0) 219 drvp->PIO_mode = 0; 220 221 mode[drive] = drvp->DMA_mode + 5; 222 } else 223 mode[drive] = drvp->PIO_mode; 224 225 if (drive && mode[0] >= 0 && 226 (opti_tim_as[spd][mode[0]] != opti_tim_as[spd][mode[1]])) { 227 /* 228 * Can't have two drives using different values 229 * for `Address Setup Time'. 230 * Slow down the faster drive to compensate. 231 */ 232 int d = (opti_tim_as[spd][mode[0]] > 233 opti_tim_as[spd][mode[1]]) ? 0 : 1; 234 235 mode[d] = mode[1-d]; 236 chp->ch_drive[d].PIO_mode = chp->ch_drive[1-d].PIO_mode; 237 chp->ch_drive[d].DMA_mode = 0; 238 s = splbio(); 239 chp->ch_drive[d].drive_flags &= ~ATA_DRIVE_DMA; 240 splx(s); 241 } 242 } 243 244 for (drive = 0; drive < 2; drive++) { 245 int m; 246 if ((m = mode[drive]) < 0) 247 continue; 248 249 /* Set the Address Setup Time and select appropriate index */ 250 rv = opti_tim_as[spd][m] << OPTI_MISC_ADDR_SETUP_SHIFT; 251 rv |= OPTI_MISC_INDEX(drive); 252 opti_write_config(chp, OPTI_REG_MISC, mr | rv); 253 254 /* Set the pulse width and recovery timing parameters */ 255 rv = opti_tim_cp[spd][m] << OPTI_PULSE_WIDTH_SHIFT; 256 rv |= opti_tim_rt[spd][m] << OPTI_RECOVERY_TIME_SHIFT; 257 opti_write_config(chp, OPTI_REG_READ_CYCLE_TIMING, rv); 258 opti_write_config(chp, OPTI_REG_WRITE_CYCLE_TIMING, rv); 259 260 /* Set the Enhanced Mode register appropriately */ 261 rv = pciide_pci_read(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE); 262 rv &= ~OPTI_ENH_MODE_MASK(chp->ch_channel, drive); 263 rv |= OPTI_ENH_MODE(chp->ch_channel, drive, opti_tim_em[m]); 264 pciide_pci_write(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE, rv); 265 } 266 267 /* Finally, enable the timings */ 268 opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_ENABLE); 269 } 270
Indexes created Sun Oct 12 02:09:55 GMT 2025