optiide.c revision 1.19
1 /* $NetBSD: optiide.c,v 1.19 2011/04/04 20:37:56 dyoung 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 1.19 2011/04/04 20:37:56 dyoung 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 sc->sc_wdcdev.sc_atac.atac_dev = self; 97 98 pciide_common_attach(sc, pa, 99 pciide_lookup_product(pa->pa_id, pciide_opti_products)); 100 101 } 102 103 static void 104 opti_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) 105 { 106 struct pciide_channel *cp; 107 pcireg_t interface; 108 u_int8_t init_ctrl; 109 int channel; 110 111 if (pciide_chipen(sc, pa) == 0) 112 return; 113 114 aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, 115 "bus-master DMA support present"); 116 117 /* 118 * XXXSCW: 119 * There seem to be a couple of buggy revisions/implementations 120 * of the OPTi pciide chipset. This kludge seems to fix one of 121 * the reported problems (PR/11644) but still fails for the 122 * other (PR/13151), although the latter may be due to other 123 * issues too... 124 */ 125 if (PCI_REVISION(pa->pa_class) <= 0x12) { 126 aprint_verbose(" but disabled due to chip rev. <= 0x12"); 127 sc->sc_dma_ok = 0; 128 } else 129 pciide_mapreg_dma(sc, pa); 130 131 aprint_verbose("\n"); 132 133 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA32 | ATAC_CAP_DATA16; 134 sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; 135 if (sc->sc_dma_ok) { 136 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 137 sc->sc_wdcdev.irqack = pciide_irqack; 138 sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; 139 } 140 sc->sc_wdcdev.sc_atac.atac_set_modes = opti_setup_channel; 141 142 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; 143 sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; 144 145 init_ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag, 146 OPTI_REG_INIT_CONTROL); 147 148 interface = PCI_INTERFACE(pa->pa_class); 149 150 wdc_allocate_regs(&sc->sc_wdcdev); 151 152 for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; 153 channel++) { 154 cp = &sc->pciide_channels[channel]; 155 if (pciide_chansetup(sc, channel, interface) == 0) 156 continue; 157 if (channel == 1 && 158 (init_ctrl & OPTI_INIT_CONTROL_CH2_DISABLE) != 0) { 159 aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, 160 "%s channel ignored (disabled)\n", cp->name); 161 cp->ata_channel.ch_flags |= ATACH_DISABLED; 162 continue; 163 } 164 pciide_mapchan(pa, cp, interface, pciide_pci_intr); 165 } 166 } 167 168 static void 169 opti_setup_channel(struct ata_channel *chp) 170 { 171 struct ata_drive_datas *drvp; 172 struct pciide_channel *cp = CHAN_TO_PCHAN(chp); 173 struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); 174 int drive, spd, s; 175 int mode[2]; 176 u_int8_t rv, mr; 177 178 /* 179 * The `Delay' and `Address Setup Time' fields of the 180 * Miscellaneous Register are always zero initially. 181 */ 182 mr = opti_read_config(chp, OPTI_REG_MISC) & ~OPTI_MISC_INDEX_MASK; 183 mr &= ~(OPTI_MISC_DELAY_MASK | 184 OPTI_MISC_ADDR_SETUP_MASK | 185 OPTI_MISC_INDEX_MASK); 186 187 /* Prime the control register before setting timing values */ 188 opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_DISABLE); 189 190 /* Determine the clockrate of the PCIbus the chip is attached to */ 191 spd = (int) opti_read_config(chp, OPTI_REG_STRAP); 192 spd &= OPTI_STRAP_PCI_SPEED_MASK; 193 194 /* setup DMA if needed */ 195 pciide_channel_dma_setup(cp); 196 197 for (drive = 0; drive < 2; drive++) { 198 drvp = &chp->ch_drive[drive]; 199 /* If no drive, skip */ 200 if ((drvp->drive_flags & DRIVE) == 0) { 201 mode[drive] = -1; 202 continue; 203 } 204 205 if ((drvp->drive_flags & DRIVE_DMA)) { 206 /* 207 * Timings will be used for both PIO and DMA, 208 * so adjust DMA mode if needed 209 */ 210 if (drvp->PIO_mode > (drvp->DMA_mode + 2)) 211 drvp->PIO_mode = drvp->DMA_mode + 2; 212 if (drvp->DMA_mode + 2 > (drvp->PIO_mode)) 213 drvp->DMA_mode = (drvp->PIO_mode > 2) ? 214 drvp->PIO_mode - 2 : 0; 215 if (drvp->DMA_mode == 0) 216 drvp->PIO_mode = 0; 217 218 mode[drive] = drvp->DMA_mode + 5; 219 } else 220 mode[drive] = drvp->PIO_mode; 221 222 if (drive && mode[0] >= 0 && 223 (opti_tim_as[spd][mode[0]] != opti_tim_as[spd][mode[1]])) { 224 /* 225 * Can't have two drives using different values 226 * for `Address Setup Time'. 227 * Slow down the faster drive to compensate. 228 */ 229 int d = (opti_tim_as[spd][mode[0]] > 230 opti_tim_as[spd][mode[1]]) ? 0 : 1; 231 232 mode[d] = mode[1-d]; 233 chp->ch_drive[d].PIO_mode = chp->ch_drive[1-d].PIO_mode; 234 chp->ch_drive[d].DMA_mode = 0; 235 s = splbio(); 236 chp->ch_drive[d].drive_flags &= ~DRIVE_DMA; 237 splx(s); 238 } 239 } 240 241 for (drive = 0; drive < 2; drive++) { 242 int m; 243 if ((m = mode[drive]) < 0) 244 continue; 245 246 /* Set the Address Setup Time and select appropriate index */ 247 rv = opti_tim_as[spd][m] << OPTI_MISC_ADDR_SETUP_SHIFT; 248 rv |= OPTI_MISC_INDEX(drive); 249 opti_write_config(chp, OPTI_REG_MISC, mr | rv); 250 251 /* Set the pulse width and recovery timing parameters */ 252 rv = opti_tim_cp[spd][m] << OPTI_PULSE_WIDTH_SHIFT; 253 rv |= opti_tim_rt[spd][m] << OPTI_RECOVERY_TIME_SHIFT; 254 opti_write_config(chp, OPTI_REG_READ_CYCLE_TIMING, rv); 255 opti_write_config(chp, OPTI_REG_WRITE_CYCLE_TIMING, rv); 256 257 /* Set the Enhanced Mode register appropriately */ 258 rv = pciide_pci_read(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE); 259 rv &= ~OPTI_ENH_MODE_MASK(chp->ch_channel, drive); 260 rv |= OPTI_ENH_MODE(chp->ch_channel, drive, opti_tim_em[m]); 261 pciide_pci_write(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE, rv); 262 } 263 264 /* Finally, enable the timings */ 265 opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_ENABLE); 266 } 267
Indexes created Tue Sep 23 02:09:52 GMT 2025