/* $NetBSD: cmdide.c,v 1.38 2012/09/03 15:38:17 kiyohara Exp $ */ /* * Copyright (c) 1999, 2000, 2001 Manuel Bouyer. * * 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 AUTHOR ``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 AUTHOR 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: cmdide.c,v 1.38 2012/09/03 15:38:17 kiyohara Exp $"); #include #include #include #include #include #include #include #include static int cmdide_match(device_t, cfdata_t, void *); static void cmdide_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(cmdide, sizeof(struct pciide_softc), cmdide_match, cmdide_attach, pciide_detach, NULL); static void cmd_chip_map(struct pciide_softc*, const struct pci_attach_args*); static void cmd0643_9_chip_map(struct pciide_softc*, const struct pci_attach_args*); static void cmd0643_9_setup_channel(struct ata_channel*); static void cmd_channel_map(const struct pci_attach_args *, struct pciide_softc *, int); static int cmd_pci_intr(void *); static void cmd646_9_irqack(struct ata_channel *); static void cmd680_chip_map(struct pciide_softc*, const struct pci_attach_args*); static void cmd680_setup_channel(struct ata_channel*); static void cmd680_channel_map(const struct pci_attach_args *, struct pciide_softc *, int); static const struct pciide_product_desc pciide_cmd_products[] = { { PCI_PRODUCT_CMDTECH_640, 0, "CMD Technology PCI0640", cmd_chip_map }, { PCI_PRODUCT_CMDTECH_643, 0, "CMD Technology PCI0643", cmd0643_9_chip_map, }, { PCI_PRODUCT_CMDTECH_646, 0, "CMD Technology PCI0646", cmd0643_9_chip_map, }, { PCI_PRODUCT_CMDTECH_648, 0, "CMD Technology PCI0648", cmd0643_9_chip_map, }, { PCI_PRODUCT_CMDTECH_649, 0, "CMD Technology PCI0649", cmd0643_9_chip_map, }, { PCI_PRODUCT_CMDTECH_680, 0, "Silicon Image 0680", cmd680_chip_map, }, { 0, 0, NULL, NULL } }; static int cmdide_match(device_t parent, cfdata_t match, void *aux) { struct pci_attach_args *pa = aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CMDTECH) { if (pciide_lookup_product(pa->pa_id, pciide_cmd_products)) return (2); } return (0); } static void cmdide_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_cmd_products)); } static void cmd_channel_map(const struct pci_attach_args *pa, struct pciide_softc *sc, int channel) { struct pciide_channel *cp = &sc->pciide_channels[channel]; u_int8_t ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CTRL); int interface, one_channel; /* * The 0648/0649 can be told to identify as a RAID controller. * In this case, we have to fake interface */ if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) { interface = PCIIDE_INTERFACE_SETTABLE(0) | PCIIDE_INTERFACE_SETTABLE(1); if (pciide_pci_read(pa->pa_pc, pa->pa_tag, CMD_CONF) & CMD_CONF_DSA1) interface |= PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1); } else { interface = PCI_INTERFACE(pa->pa_class); } sc->wdc_chanarray[channel] = &cp->ata_channel; cp->name = PCIIDE_CHANNEL_NAME(channel); cp->ata_channel.ch_channel = channel; cp->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; /* * Older CMD64X doesn't have independent channels */ switch (sc->sc_pp->ide_product) { case PCI_PRODUCT_CMDTECH_649: one_channel = 0; break; default: one_channel = 1; break; } if (channel > 0 && one_channel) { cp->ata_channel.ch_queue = sc->pciide_channels[0].ata_channel.ch_queue; } else { cp->ata_channel.ch_queue = malloc(sizeof(struct ata_queue), M_DEVBUF, M_NOWAIT); } if (cp->ata_channel.ch_queue == NULL) { aprint_error("%s %s channel: " "can't allocate memory for command queue", device_xname(sc->sc_wdcdev.sc_atac.atac_dev), cp->name); return; } aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, "%s channel %s to %s mode\n", cp->name, (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ? "configured" : "wired", (interface & PCIIDE_INTERFACE_PCI(channel)) ? "native-PCI" : "compatibility"); /* * with a CMD PCI64x, if we get here, the first channel is enabled: * there's no way to disable the first channel without disabling * the whole device */ if (channel != 0 && (ctrl & CMD_CTRL_2PORT) == 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; return; } pciide_mapchan(pa, cp, interface, cmd_pci_intr); } static int cmd_pci_intr(void *arg) { struct pciide_softc *sc = arg; struct pciide_channel *cp; struct ata_channel *wdc_cp; int i, rv, crv; u_int32_t priirq, secirq; rv = 0; priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF); secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23); for (i = 0; i < sc->sc_wdcdev.sc_atac.atac_nchannels; i++) { cp = &sc->pciide_channels[i]; wdc_cp = &cp->ata_channel; /* If a compat channel skip. */ if (cp->compat) continue; if ((i == 0 && (priirq & CMD_CONF_DRV0_INTR)) || (i == 1 && (secirq & CMD_ARTTIM23_IRQ))) { crv = wdcintr(wdc_cp); if (crv == 0) { aprint_error("%s:%d: bogus intr\n", device_xname( sc->sc_wdcdev.sc_atac.atac_dev), i); sc->sc_wdcdev.irqack(wdc_cp); } else rv = 1; } } return rv; } static void cmd_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) { int channel; /* * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE * and base addresses registers can be disabled at * hardware level. In this case, the device is wired * in compat mode and its first channel is always enabled, * but we can't rely on PCI_COMMAND_IO_ENABLE. * In fact, it seems that the first channel of the CMD PCI0640 * can't be disabled. */ #ifdef PCIIDE_CMD064x_DISABLE if (pciide_chipen(sc, pa) == 0) return; #endif aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, "hardware does not support DMA\n"); sc->sc_dma_ok = 0; sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16; sc->sc_wdcdev.wdc_maxdrives = 2; wdc_allocate_regs(&sc->sc_wdcdev); for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; channel++) { cmd_channel_map(pa, sc, channel); } } static void cmd0643_9_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) { int channel; pcireg_t rev = PCI_REVISION(pa->pa_class); /* * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE * and base addresses registers can be disabled at * hardware level. In this case, the device is wired * in compat mode and its first channel is always enabled, * but we can't rely on PCI_COMMAND_IO_ENABLE. * In fact, it seems that the first channel of the CMD PCI0640 * can't be disabled. */ #ifdef PCIIDE_CMD064x_DISABLE if (pciide_chipen(sc, pa) == 0) return; #endif aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, "bus-master DMA support present"); pciide_mapreg_dma(sc, pa); aprint_verbose("\n"); sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32; if (sc->sc_dma_ok) { sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; switch (sc->sc_pp->ide_product) { case PCI_PRODUCT_CMDTECH_649: sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA; sc->sc_wdcdev.sc_atac.atac_udma_cap = 5; sc->sc_wdcdev.irqack = cmd646_9_irqack; break; case PCI_PRODUCT_CMDTECH_648: sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA; sc->sc_wdcdev.sc_atac.atac_udma_cap = 4; sc->sc_wdcdev.irqack = cmd646_9_irqack; break; case PCI_PRODUCT_CMDTECH_646: if (rev >= CMD0646U2_REV) { sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA; sc->sc_wdcdev.sc_atac.atac_udma_cap = 2; } else if (rev >= CMD0646U_REV) { /* * Linux's driver claims that the 646U is broken * with UDMA. Only enable it if we know what we're * doing */ #ifdef PCIIDE_CMD0646U_ENABLEUDMA sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA; sc->sc_wdcdev.sc_atac.atac_udma_cap = 2; #endif /* explicitly disable UDMA */ pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_UDMATIM(0), 0); pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_UDMATIM(1), 0); } sc->sc_wdcdev.irqack = cmd646_9_irqack; break; default: sc->sc_wdcdev.irqack = pciide_irqack; } } sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; sc->sc_wdcdev.sc_atac.atac_set_modes = cmd0643_9_setup_channel; sc->sc_wdcdev.wdc_maxdrives = 2; ATADEBUG_PRINT(("cmd0643_9_chip_map: old timings reg 0x%x 0x%x\n", pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54), pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)), DEBUG_PROBE); wdc_allocate_regs(&sc->sc_wdcdev); for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; channel++) cmd_channel_map(pa, sc, channel); /* * note - this also makes sure we clear the irq disable and reset * bits */ pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_DMA_MODE, CMD_DMA_MULTIPLE); ATADEBUG_PRINT(("cmd0643_9_chip_map: timings reg now 0x%x 0x%x\n", pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54), pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)), DEBUG_PROBE); } static void cmd0643_9_setup_channel(struct ata_channel *chp) { struct ata_drive_datas *drvp; u_int8_t tim; u_int32_t idedma_ctl, udma_reg; int drive, s; struct pciide_channel *cp = CHAN_TO_PCHAN(chp); struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); idedma_ctl = 0; /* 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) continue; /* add timing values, setup DMA if needed */ tim = cmd0643_9_data_tim_pio[drvp->PIO_mode]; if (drvp->drive_flags & (ATA_DRIVE_DMA | ATA_DRIVE_UDMA)) { if (drvp->drive_flags & ATA_DRIVE_UDMA) { /* UltraDMA on a 646U2, 0648 or 0649 */ s = splbio(); drvp->drive_flags &= ~ATA_DRIVE_DMA; splx(s); udma_reg = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_UDMATIM(chp->ch_channel)); if (drvp->UDMA_mode > 2 && (pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_BICSR) & CMD_BICSR_80(chp->ch_channel)) == 0) drvp->UDMA_mode = 2; if (drvp->UDMA_mode > 2) udma_reg &= ~CMD_UDMATIM_UDMA33(drive); else if (sc->sc_wdcdev.sc_atac.atac_udma_cap > 2) udma_reg |= CMD_UDMATIM_UDMA33(drive); udma_reg |= CMD_UDMATIM_UDMA(drive); udma_reg &= ~(CMD_UDMATIM_TIM_MASK << CMD_UDMATIM_TIM_OFF(drive)); udma_reg |= (cmd0646_9_tim_udma[drvp->UDMA_mode] << CMD_UDMATIM_TIM_OFF(drive)); pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_UDMATIM(chp->ch_channel), udma_reg); } else { /* * use Multiword DMA. * Timings will be used for both PIO and DMA, * so adjust DMA mode if needed * if we have a 0646U2/8/9, turn off UDMA */ if (sc->sc_wdcdev.sc_atac.atac_cap & ATAC_CAP_UDMA) { udma_reg = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_UDMATIM(chp->ch_channel)); udma_reg &= ~CMD_UDMATIM_UDMA(drive); pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_UDMATIM(chp->ch_channel), udma_reg); } if (drvp->PIO_mode >= 3 && (drvp->DMA_mode + 2) > drvp->PIO_mode) { drvp->DMA_mode = drvp->PIO_mode - 2; } tim = cmd0643_9_data_tim_dma[drvp->DMA_mode]; } idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); } pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_DATA_TIM(chp->ch_channel, drive), tim); } if (idedma_ctl != 0) { /* Add software bits in status register */ bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0, idedma_ctl); } } static void cmd646_9_irqack(struct ata_channel *chp) { u_int32_t priirq, secirq; struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); if (chp->ch_channel == 0) { priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF); pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_CONF, priirq); } else { secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23); pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23, secirq); } pciide_irqack(chp); } static void cmd680_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) { int channel; if (pciide_chipen(sc, pa) == 0) return; aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, "bus-master DMA support present"); pciide_mapreg_dma(sc, pa); aprint_verbose("\n"); sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32; if (sc->sc_dma_ok) { sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA; sc->sc_wdcdev.sc_atac.atac_udma_cap = 6; sc->sc_wdcdev.irqack = pciide_irqack; } sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; sc->sc_wdcdev.sc_atac.atac_set_modes = cmd680_setup_channel; sc->sc_wdcdev.wdc_maxdrives = 2; pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x80, 0x00); pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x84, 0x00); pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x8a, pciide_pci_read(sc->sc_pc, sc->sc_tag, 0x8a) | 0x01); wdc_allocate_regs(&sc->sc_wdcdev); for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; channel++) cmd680_channel_map(pa, sc, channel); } static void cmd680_channel_map(const struct pci_attach_args *pa, struct pciide_softc *sc, int channel) { struct pciide_channel *cp = &sc->pciide_channels[channel]; int interface, i, reg; static const u_int8_t init_val[] = { 0x8a, 0x32, 0x8a, 0x32, 0x8a, 0x32, 0x92, 0x43, 0x92, 0x43, 0x09, 0x40, 0x09, 0x40 }; if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) { interface = PCIIDE_INTERFACE_SETTABLE(0) | PCIIDE_INTERFACE_SETTABLE(1); interface |= PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1); } else { interface = PCI_INTERFACE(pa->pa_class); } sc->wdc_chanarray[channel] = &cp->ata_channel; cp->name = PCIIDE_CHANNEL_NAME(channel); cp->ata_channel.ch_channel = channel; cp->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; cp->ata_channel.ch_queue = malloc(sizeof(struct ata_queue), M_DEVBUF, M_NOWAIT); if (cp->ata_channel.ch_queue == NULL) { aprint_error("%s %s channel: " "can't allocate memory for command queue", device_xname(sc->sc_wdcdev.sc_atac.atac_dev), cp->name); return; } /* XXX */ reg = 0xa2 + channel * 16; for (i = 0; i < sizeof(init_val); i++) pciide_pci_write(sc->sc_pc, sc->sc_tag, reg + i, init_val[i]); aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, "%s channel %s to %s mode\n", cp->name, (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ? "configured" : "wired", (interface & PCIIDE_INTERFACE_PCI(channel)) ? "native-PCI" : "compatibility"); pciide_mapchan(pa, cp, interface, pciide_pci_intr); } static void cmd680_setup_channel(struct ata_channel *chp) { struct ata_drive_datas *drvp; u_int8_t mode, off, scsc; u_int16_t val; u_int32_t idedma_ctl; int drive, s; struct pciide_channel *cp = CHAN_TO_PCHAN(chp); struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); pci_chipset_tag_t pc = sc->sc_pc; pcitag_t pa = sc->sc_tag; static const u_int8_t udma2_tbl[] = { 0x0f, 0x0b, 0x07, 0x06, 0x03, 0x02, 0x01 }; static const u_int8_t udma_tbl[] = { 0x0c, 0x07, 0x05, 0x04, 0x02, 0x01, 0x00 }; static const u_int16_t dma_tbl[] = { 0x2208, 0x10c2, 0x10c1 }; static const u_int16_t pio_tbl[] = { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 }; idedma_ctl = 0; pciide_channel_dma_setup(cp); mode = pciide_pci_read(pc, pa, 0x80 + chp->ch_channel * 4); for (drive = 0; drive < 2; drive++) { drvp = &chp->ch_drive[drive]; /* If no drive, skip */ if (drvp->drive_type == ATA_DRIVET_NONE) continue; mode &= ~(0x03 << (drive * 4)); if (drvp->drive_flags & ATA_DRIVE_UDMA) { s = splbio(); drvp->drive_flags &= ~ATA_DRIVE_DMA; splx(s); off = 0xa0 + chp->ch_channel * 16; if (drvp->UDMA_mode > 2 && (pciide_pci_read(pc, pa, off) & 0x01) == 0) drvp->UDMA_mode = 2; scsc = pciide_pci_read(pc, pa, 0x8a); if (drvp->UDMA_mode == 6 && (scsc & 0x30) == 0) { pciide_pci_write(pc, pa, 0x8a, scsc | 0x01); scsc = pciide_pci_read(pc, pa, 0x8a); if ((scsc & 0x30) == 0) drvp->UDMA_mode = 5; } mode |= 0x03 << (drive * 4); off = 0xac + chp->ch_channel * 16 + drive * 2; val = pciide_pci_read(pc, pa, off) & ~0x3f; if (scsc & 0x30) val |= udma2_tbl[drvp->UDMA_mode]; else val |= udma_tbl[drvp->UDMA_mode]; pciide_pci_write(pc, pa, off, val); idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); } else if (drvp->drive_flags & ATA_DRIVE_DMA) { mode |= 0x02 << (drive * 4); off = 0xa8 + chp->ch_channel * 16 + drive * 2; val = dma_tbl[drvp->DMA_mode]; pciide_pci_write(pc, pa, off, val & 0xff); pciide_pci_write(pc, pa, off+1, val >> 8); idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); } else { mode |= 0x01 << (drive * 4); off = 0xa4 + chp->ch_channel * 16 + drive * 2; val = pio_tbl[drvp->PIO_mode]; pciide_pci_write(pc, pa, off, val & 0xff); pciide_pci_write(pc, pa, off+1, val >> 8); } } pciide_pci_write(pc, pa, 0x80 + chp->ch_channel * 4, mode); if (idedma_ctl != 0) { /* Add software bits in status register */ bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0, idedma_ctl); } }