/* $NetBSD: optiide.c,v 1.25 2013/10/07 19:51:55 jakllsch Exp $ */ /*- * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Steve C. Woodford. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: optiide.c,v 1.25 2013/10/07 19:51:55 jakllsch Exp $"); #include #include #include #include #include #include #include static void opti_chip_map(struct pciide_softc*, const struct pci_attach_args*); static void opti_setup_channel(struct ata_channel*); static int optiide_match(device_t, cfdata_t, void *); static void optiide_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(optiide, sizeof(struct pciide_softc), optiide_match, optiide_attach, pciide_detach, NULL); static const struct pciide_product_desc pciide_opti_products[] = { { PCI_PRODUCT_OPTI_82C621, 0, "OPTi 82c621 PCI IDE controller", opti_chip_map, }, { PCI_PRODUCT_OPTI_82C568, 0, "OPTi 82c568 (82c621 compatible) PCI IDE controller", opti_chip_map, }, { PCI_PRODUCT_OPTI_82D568, 0, "OPTi 82d568 (82c621 compatible) PCI IDE controller", opti_chip_map, }, { 0, 0, NULL, NULL } }; static int optiide_match(device_t parent, cfdata_t match, void *aux) { struct pci_attach_args *pa = aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_OPTI && PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) { if (pciide_lookup_product(pa->pa_id, pciide_opti_products)) return (2); } return (0); } static void optiide_attach(device_t parent, device_t self, void *aux) { struct pci_attach_args *pa = aux; struct pciide_softc *sc = device_private(self); sc->sc_wdcdev.sc_atac.atac_dev = self; pciide_common_attach(sc, pa, pciide_lookup_product(pa->pa_id, pciide_opti_products)); } static void opti_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) { struct pciide_channel *cp; pcireg_t interface; u_int8_t init_ctrl; int channel; if (pciide_chipen(sc, pa) == 0) return; aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, "bus-master DMA support present"); /* * XXXSCW: * There seem to be a couple of buggy revisions/implementations * of the OPTi pciide chipset. This kludge seems to fix one of * the reported problems (PR/11644) but still fails for the * other (PR/13151), although the latter may be due to other * issues too... */ if (PCI_REVISION(pa->pa_class) <= 0x12) { aprint_verbose(" but disabled due to chip rev. <= 0x12"); sc->sc_dma_ok = 0; } else pciide_mapreg_dma(sc, pa); aprint_verbose("\n"); sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA32 | ATAC_CAP_DATA16; sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; if (sc->sc_dma_ok) { sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; sc->sc_wdcdev.irqack = pciide_irqack; sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; } sc->sc_wdcdev.sc_atac.atac_set_modes = opti_setup_channel; sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; sc->sc_wdcdev.wdc_maxdrives = 2; init_ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag, OPTI_REG_INIT_CONTROL); interface = PCI_INTERFACE(pa->pa_class); wdc_allocate_regs(&sc->sc_wdcdev); for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; channel++) { cp = &sc->pciide_channels[channel]; if (pciide_chansetup(sc, channel, interface) == 0) continue; if (channel == 1 && (init_ctrl & OPTI_INIT_CONTROL_CH2_DISABLE) != 0) { aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, "%s channel ignored (disabled)\n", cp->name); cp->ata_channel.ch_flags |= ATACH_DISABLED; continue; } pciide_mapchan(pa, cp, interface, pciide_pci_intr); } } static void opti_setup_channel(struct ata_channel *chp) { struct ata_drive_datas *drvp; struct pciide_channel *cp = CHAN_TO_PCHAN(chp); struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); int drive, spd, s; int mode[2]; u_int8_t rv, mr; /* * The `Delay' and `Address Setup Time' fields of the * Miscellaneous Register are always zero initially. */ mr = opti_read_config(chp, OPTI_REG_MISC) & ~OPTI_MISC_INDEX_MASK; mr &= ~(OPTI_MISC_DELAY_MASK | OPTI_MISC_ADDR_SETUP_MASK | OPTI_MISC_INDEX_MASK); /* Prime the control register before setting timing values */ opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_DISABLE); /* Determine the clockrate of the PCIbus the chip is attached to */ spd = (int) opti_read_config(chp, OPTI_REG_STRAP); spd &= OPTI_STRAP_PCI_SPEED_MASK; /* setup DMA if needed */ pciide_channel_dma_setup(cp); for (drive = 0; drive < 2; drive++) { drvp = &chp->ch_drive[drive]; /* If no drive, skip */ if (drvp->drive_type == ATA_DRIVET_NONE) { mode[drive] = -1; continue; } if ((drvp->drive_flags & ATA_DRIVE_DMA)) { /* * Timings will be used for both PIO and DMA, * so adjust DMA mode if needed */ if (drvp->PIO_mode > (drvp->DMA_mode + 2)) drvp->PIO_mode = drvp->DMA_mode + 2; if (drvp->DMA_mode + 2 > (drvp->PIO_mode)) drvp->DMA_mode = (drvp->PIO_mode > 2) ? drvp->PIO_mode - 2 : 0; if (drvp->DMA_mode == 0) drvp->PIO_mode = 0; mode[drive] = drvp->DMA_mode + 5; } else mode[drive] = drvp->PIO_mode; if (drive && mode[0] >= 0 && (opti_tim_as[spd][mode[0]] != opti_tim_as[spd][mode[1]])) { /* * Can't have two drives using different values * for `Address Setup Time'. * Slow down the faster drive to compensate. */ int d = (opti_tim_as[spd][mode[0]] > opti_tim_as[spd][mode[1]]) ? 0 : 1; mode[d] = mode[1-d]; chp->ch_drive[d].PIO_mode = chp->ch_drive[1-d].PIO_mode; chp->ch_drive[d].DMA_mode = 0; s = splbio(); chp->ch_drive[d].drive_flags &= ~ATA_DRIVE_DMA; splx(s); } } for (drive = 0; drive < 2; drive++) { int m; if ((m = mode[drive]) < 0) continue; /* Set the Address Setup Time and select appropriate index */ rv = opti_tim_as[spd][m] << OPTI_MISC_ADDR_SETUP_SHIFT; rv |= OPTI_MISC_INDEX(drive); opti_write_config(chp, OPTI_REG_MISC, mr | rv); /* Set the pulse width and recovery timing parameters */ rv = opti_tim_cp[spd][m] << OPTI_PULSE_WIDTH_SHIFT; rv |= opti_tim_rt[spd][m] << OPTI_RECOVERY_TIME_SHIFT; opti_write_config(chp, OPTI_REG_READ_CYCLE_TIMING, rv); opti_write_config(chp, OPTI_REG_WRITE_CYCLE_TIMING, rv); /* Set the Enhanced Mode register appropriately */ rv = pciide_pci_read(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE); rv &= ~OPTI_ENH_MODE_MASK(chp->ch_channel, drive); rv |= OPTI_ENH_MODE(chp->ch_channel, drive, opti_tim_em[m]); pciide_pci_write(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE, rv); } /* Finally, enable the timings */ opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_ENABLE); }