/* $NetBSD: pciide_common.c,v 1.21 2004/08/21 00:28:34 thorpej Exp $ */ /* * Copyright (c) 1999, 2000, 2001, 2003 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Manuel Bouyer. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * 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. * */ /* * Copyright (c) 1996, 1998 Christopher G. Demetriou. All rights reserved. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * 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. */ /* * PCI IDE controller driver. * * Author: Christopher G. Demetriou, March 2, 1998 (derived from NetBSD * sys/dev/pci/ppb.c, revision 1.16). * * See "PCI IDE Controller Specification, Revision 1.0 3/4/94" and * "Programming Interface for Bus Master IDE Controller, Revision 1.0 * 5/16/94" from the PCI SIG. * */ #include __KERNEL_RCSID(0, "$NetBSD: pciide_common.c,v 1.21 2004/08/21 00:28:34 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #ifdef ATADEBUG int atadebug_pciide_mask = 0; #endif static const char dmaerrfmt[] = "%s:%d: unable to %s table DMA map for drive %d, error=%d\n"; /* Default product description for devices not known from this controller */ const struct pciide_product_desc default_product_desc = { 0, 0, "Generic PCI IDE controller", default_chip_map, }; const struct pciide_product_desc * pciide_lookup_product(id, pp) pcireg_t id; const struct pciide_product_desc *pp; { for (; pp->chip_map != NULL; pp++) if (PCI_PRODUCT(id) == pp->ide_product) break; if (pp->chip_map == NULL) return NULL; return pp; } void pciide_common_attach(sc, pa, pp) struct pciide_softc *sc; struct pci_attach_args *pa; const struct pciide_product_desc *pp; { pci_chipset_tag_t pc = pa->pa_pc; pcitag_t tag = pa->pa_tag; pcireg_t csr; char devinfo[256]; const char *displaydev; aprint_naive(": disk controller\n"); aprint_normal("\n"); sc->sc_pci_id = pa->pa_id; if (pp == NULL) { /* should only happen for generic pciide devices */ sc->sc_pp = &default_product_desc; pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); displaydev = devinfo; } else { sc->sc_pp = pp; displaydev = sc->sc_pp->ide_name; } /* if displaydev == NULL, printf is done in chip-specific map */ if (displaydev) aprint_normal("%s: %s (rev. 0x%02x)\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, displaydev, PCI_REVISION(pa->pa_class)); sc->sc_pc = pa->pa_pc; sc->sc_tag = pa->pa_tag; /* Set up DMA defaults; these might be adjusted by chip_map. */ sc->sc_dma_maxsegsz = IDEDMA_BYTE_COUNT_MAX; sc->sc_dma_boundary = IDEDMA_BYTE_COUNT_ALIGN; #ifdef ATADEBUG if (atadebug_pciide_mask & DEBUG_PROBE) pci_conf_print(sc->sc_pc, sc->sc_tag, NULL); #endif sc->sc_pp->chip_map(sc, pa); if (sc->sc_dma_ok) { csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); csr |= PCI_COMMAND_MASTER_ENABLE; pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr); } ATADEBUG_PRINT(("pciide: command/status register=%x\n", pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG)), DEBUG_PROBE); } /* tell whether the chip is enabled or not */ int pciide_chipen(sc, pa) struct pciide_softc *sc; struct pci_attach_args *pa; { pcireg_t csr; if ((pa->pa_flags & PCI_FLAGS_IO_ENABLED) == 0) { csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG); aprint_normal("%s: device disabled (at %s)\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, (csr & PCI_COMMAND_IO_ENABLE) == 0 ? "device" : "bridge"); return 0; } return 1; } void pciide_mapregs_compat(pa, cp, compatchan, cmdsizep, ctlsizep) struct pci_attach_args *pa; struct pciide_channel *cp; int compatchan; bus_size_t *cmdsizep, *ctlsizep; { struct pciide_softc *sc = CHAN_TO_PCIIDE(&cp->ata_channel); struct ata_channel *wdc_cp = &cp->ata_channel; struct wdc_regs *wdr = CHAN_TO_WDC_REGS(wdc_cp); int i; cp->compat = 1; *cmdsizep = PCIIDE_COMPAT_CMD_SIZE; *ctlsizep = PCIIDE_COMPAT_CTL_SIZE; wdr->cmd_iot = pa->pa_iot; if (bus_space_map(wdr->cmd_iot, PCIIDE_COMPAT_CMD_BASE(compatchan), PCIIDE_COMPAT_CMD_SIZE, 0, &wdr->cmd_baseioh) != 0) { aprint_error("%s: couldn't map %s channel cmd regs\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); goto bad; } wdr->ctl_iot = pa->pa_iot; if (bus_space_map(wdr->ctl_iot, PCIIDE_COMPAT_CTL_BASE(compatchan), PCIIDE_COMPAT_CTL_SIZE, 0, &wdr->ctl_ioh) != 0) { aprint_error("%s: couldn't map %s channel ctl regs\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, PCIIDE_COMPAT_CMD_SIZE); goto bad; } for (i = 0; i < WDC_NREG; i++) { if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, i, i == 0 ? 4 : 1, &wdr->cmd_iohs[i]) != 0) { aprint_error("%s: couldn't subregion %s channel " "cmd regs\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); goto bad; } } wdc_init_shadow_regs(wdc_cp); wdr->data32iot = wdr->cmd_iot; wdr->data32ioh = wdr->cmd_iohs[0]; return; bad: cp->ata_channel.ch_flags |= ATACH_DISABLED; return; } void pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep, pci_intr) struct pci_attach_args * pa; struct pciide_channel *cp; bus_size_t *cmdsizep, *ctlsizep; int (*pci_intr) __P((void *)); { struct pciide_softc *sc = CHAN_TO_PCIIDE(&cp->ata_channel); struct ata_channel *wdc_cp = &cp->ata_channel; struct wdc_regs *wdr = CHAN_TO_WDC_REGS(wdc_cp); const char *intrstr; pci_intr_handle_t intrhandle; int i; cp->compat = 0; if (sc->sc_pci_ih == NULL) { if (pci_intr_map(pa, &intrhandle) != 0) { aprint_error("%s: couldn't map native-PCI interrupt\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname); goto bad; } intrstr = pci_intr_string(pa->pa_pc, intrhandle); sc->sc_pci_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_BIO, pci_intr, sc); if (sc->sc_pci_ih != NULL) { aprint_normal("%s: using %s for native-PCI interrupt\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, intrstr ? intrstr : "unknown interrupt"); } else { aprint_error( "%s: couldn't establish native-PCI interrupt", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname); if (intrstr != NULL) aprint_normal(" at %s", intrstr); aprint_normal("\n"); goto bad; } } cp->ih = sc->sc_pci_ih; if (pci_mapreg_map(pa, PCIIDE_REG_CMD_BASE(wdc_cp->ch_channel), PCI_MAPREG_TYPE_IO, 0, &wdr->cmd_iot, &wdr->cmd_baseioh, NULL, cmdsizep) != 0) { aprint_error("%s: couldn't map %s channel cmd regs\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); goto bad; } if (pci_mapreg_map(pa, PCIIDE_REG_CTL_BASE(wdc_cp->ch_channel), PCI_MAPREG_TYPE_IO, 0, &wdr->ctl_iot, &cp->ctl_baseioh, NULL, ctlsizep) != 0) { aprint_error("%s: couldn't map %s channel ctl regs\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, *cmdsizep); goto bad; } /* * In native mode, 4 bytes of I/O space are mapped for the control * register, the control register is at offset 2. Pass the generic * code a handle for only one byte at the right offset. */ if (bus_space_subregion(wdr->ctl_iot, cp->ctl_baseioh, 2, 1, &wdr->ctl_ioh) != 0) { aprint_error("%s: unable to subregion %s channel ctl regs\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, *cmdsizep); bus_space_unmap(wdr->cmd_iot, cp->ctl_baseioh, *ctlsizep); goto bad; } for (i = 0; i < WDC_NREG; i++) { if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, i, i == 0 ? 4 : 1, &wdr->cmd_iohs[i]) != 0) { aprint_error("%s: couldn't subregion %s channel " "cmd regs\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); goto bad; } } wdc_init_shadow_regs(wdc_cp); wdr->data32iot = wdr->cmd_iot; wdr->data32ioh = wdr->cmd_iohs[0]; return; bad: cp->ata_channel.ch_flags |= ATACH_DISABLED; return; } void pciide_mapreg_dma(sc, pa) struct pciide_softc *sc; struct pci_attach_args *pa; { pcireg_t maptype; bus_addr_t addr; struct pciide_channel *pc; int reg, chan; bus_size_t size; /* * Map DMA registers * * Note that sc_dma_ok is the right variable to test to see if * DMA can be done. If the interface doesn't support DMA, * sc_dma_ok will never be non-zero. If the DMA regs couldn't * be mapped, it'll be zero. I.e., sc_dma_ok will only be * non-zero if the interface supports DMA and the registers * could be mapped. * * XXX Note that despite the fact that the Bus Master IDE specs * XXX say that "The bus master IDE function uses 16 bytes of IO * XXX space," some controllers (at least the United * XXX Microelectronics UM8886BF) place it in memory space. */ maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, PCIIDE_REG_BUS_MASTER_DMA); switch (maptype) { case PCI_MAPREG_TYPE_IO: sc->sc_dma_ok = (pci_mapreg_info(pa->pa_pc, pa->pa_tag, PCIIDE_REG_BUS_MASTER_DMA, PCI_MAPREG_TYPE_IO, &addr, NULL, NULL) == 0); if (sc->sc_dma_ok == 0) { aprint_normal( ", but unused (couldn't query registers)"); break; } if ((sc->sc_pp->ide_flags & IDE_16BIT_IOSPACE) && addr >= 0x10000) { sc->sc_dma_ok = 0; aprint_normal( ", but unused (registers at unsafe address " "%#lx)", (unsigned long)addr); break; } /* FALLTHROUGH */ case PCI_MAPREG_MEM_TYPE_32BIT: sc->sc_dma_ok = (pci_mapreg_map(pa, PCIIDE_REG_BUS_MASTER_DMA, maptype, 0, &sc->sc_dma_iot, &sc->sc_dma_ioh, NULL, NULL) == 0); sc->sc_dmat = pa->pa_dmat; if (sc->sc_dma_ok == 0) { aprint_normal(", but unused (couldn't map registers)"); } else { sc->sc_wdcdev.dma_arg = sc; sc->sc_wdcdev.dma_init = pciide_dma_init; sc->sc_wdcdev.dma_start = pciide_dma_start; sc->sc_wdcdev.dma_finish = pciide_dma_finish; } if (sc->sc_wdcdev.sc_atac.atac_dev.dv_cfdata->cf_flags & PCIIDE_OPTIONS_NODMA) { aprint_normal( ", but unused (forced off by config file)"); sc->sc_dma_ok = 0; } break; default: sc->sc_dma_ok = 0; aprint_normal( ", but unsupported register maptype (0x%x)", maptype); } if (sc->sc_dma_ok == 0) return; /* * Set up the default handles for the DMA registers. * Just reserve 32 bits for each handle, unless space * doesn't permit it. */ for (chan = 0; chan < PCIIDE_NUM_CHANNELS; chan++) { pc = &sc->pciide_channels[chan]; for (reg = 0; reg < IDEDMA_NREGS; reg++) { size = 4; if (size > (IDEDMA_SCH_OFFSET - reg)) size = IDEDMA_SCH_OFFSET - reg; if (bus_space_subregion(sc->sc_dma_iot, sc->sc_dma_ioh, IDEDMA_SCH_OFFSET * chan + reg, size, &pc->dma_iohs[reg]) != 0) { sc->sc_dma_ok = 0; aprint_normal(", but can't subregion offset %d " "size %lu", reg, (u_long)size); return; } } } } int pciide_compat_intr(arg) void *arg; { struct pciide_channel *cp = arg; #ifdef DIAGNOSTIC /* should only be called for a compat channel */ if (cp->compat == 0) panic("pciide compat intr called for non-compat chan %p", cp); #endif return (wdcintr(&cp->ata_channel)); } int pciide_pci_intr(arg) void *arg; { struct pciide_softc *sc = arg; struct pciide_channel *cp; struct ata_channel *wdc_cp; int i, rv, crv; rv = 0; 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 this channel not waiting for intr, skip */ if ((wdc_cp->ch_flags & ATACH_IRQ_WAIT) == 0) continue; crv = wdcintr(wdc_cp); if (crv == 0) ; /* leave rv alone */ else if (crv == 1) rv = 1; /* claim the intr */ else if (rv == 0) /* crv should be -1 in this case */ rv = crv; /* if we've done no better, take it */ } return (rv); } void pciide_channel_dma_setup(cp) struct pciide_channel *cp; { int drive, s; struct pciide_softc *sc = CHAN_TO_PCIIDE(&cp->ata_channel); struct ata_drive_datas *drvp; KASSERT(cp->ata_channel.ch_ndrive != 0); for (drive = 0; drive < cp->ata_channel.ch_ndrive; drive++) { drvp = &cp->ata_channel.ch_drive[drive]; /* If no drive, skip */ if ((drvp->drive_flags & DRIVE) == 0) continue; /* setup DMA if needed */ if (((drvp->drive_flags & DRIVE_DMA) == 0 && (drvp->drive_flags & DRIVE_UDMA) == 0) || sc->sc_dma_ok == 0) { s = splbio(); drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); splx(s); continue; } if (pciide_dma_table_setup(sc, cp->ata_channel.ch_channel, drive) != 0) { /* Abort DMA setup */ s = splbio(); drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); splx(s); continue; } } } int pciide_dma_table_setup(sc, channel, drive) struct pciide_softc *sc; int channel, drive; { bus_dma_segment_t seg; int error, rseg; const bus_size_t dma_table_size = sizeof(struct idedma_table) * NIDEDMA_TABLES; struct pciide_dma_maps *dma_maps = &sc->pciide_channels[channel].dma_maps[drive]; /* If table was already allocated, just return */ if (dma_maps->dma_table) return 0; /* Allocate memory for the DMA tables and map it */ if ((error = bus_dmamem_alloc(sc->sc_dmat, dma_table_size, IDEDMA_TBL_ALIGN, IDEDMA_TBL_ALIGN, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, "allocate", drive, error); return error; } if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, dma_table_size, (caddr_t *)&dma_maps->dma_table, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, "map", drive, error); return error; } ATADEBUG_PRINT(("pciide_dma_table_setup: table at %p len %lu, " "phy 0x%lx\n", dma_maps->dma_table, (u_long)dma_table_size, (unsigned long)seg.ds_addr), DEBUG_PROBE); /* Create and load table DMA map for this disk */ if ((error = bus_dmamap_create(sc->sc_dmat, dma_table_size, 1, dma_table_size, IDEDMA_TBL_ALIGN, BUS_DMA_NOWAIT, &dma_maps->dmamap_table)) != 0) { aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, "create", drive, error); return error; } if ((error = bus_dmamap_load(sc->sc_dmat, dma_maps->dmamap_table, dma_maps->dma_table, dma_table_size, NULL, BUS_DMA_NOWAIT)) != 0) { aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, "load", drive, error); return error; } ATADEBUG_PRINT(("pciide_dma_table_setup: phy addr of table 0x%lx\n", (unsigned long)dma_maps->dmamap_table->dm_segs[0].ds_addr), DEBUG_PROBE); /* Create a xfer DMA map for this drive */ if ((error = bus_dmamap_create(sc->sc_dmat, IDEDMA_BYTE_COUNT_MAX, NIDEDMA_TABLES, sc->sc_dma_maxsegsz, sc->sc_dma_boundary, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &dma_maps->dmamap_xfer)) != 0) { aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, "create xfer", drive, error); return error; } return 0; } int pciide_dma_init(v, channel, drive, databuf, datalen, flags) void *v; int channel, drive; void *databuf; size_t datalen; int flags; { struct pciide_softc *sc = v; int error, seg; struct pciide_channel *cp = &sc->pciide_channels[channel]; struct pciide_dma_maps *dma_maps = &cp->dma_maps[drive]; error = bus_dmamap_load(sc->sc_dmat, dma_maps->dmamap_xfer, databuf, datalen, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | ((flags & WDC_DMA_READ) ? BUS_DMA_READ : BUS_DMA_WRITE)); if (error) { printf(dmaerrfmt, sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, "load xfer", drive, error); return error; } bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0, dma_maps->dmamap_xfer->dm_mapsize, (flags & WDC_DMA_READ) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); for (seg = 0; seg < dma_maps->dmamap_xfer->dm_nsegs; seg++) { #ifdef DIAGNOSTIC /* A segment must not cross a 64k boundary */ { u_long phys = dma_maps->dmamap_xfer->dm_segs[seg].ds_addr; u_long len = dma_maps->dmamap_xfer->dm_segs[seg].ds_len; if ((phys & ~IDEDMA_BYTE_COUNT_MASK) != ((phys + len - 1) & ~IDEDMA_BYTE_COUNT_MASK)) { printf("pciide_dma: segment %d physical addr 0x%lx" " len 0x%lx not properly aligned\n", seg, phys, len); panic("pciide_dma: buf align"); } } #endif dma_maps->dma_table[seg].base_addr = htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_addr); dma_maps->dma_table[seg].byte_count = htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_len & IDEDMA_BYTE_COUNT_MASK); ATADEBUG_PRINT(("\t seg %d len %d addr 0x%x\n", seg, le32toh(dma_maps->dma_table[seg].byte_count), le32toh(dma_maps->dma_table[seg].base_addr)), DEBUG_DMA); } dma_maps->dma_table[dma_maps->dmamap_xfer->dm_nsegs -1].byte_count |= htole32(IDEDMA_BYTE_COUNT_EOT); bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_table, 0, dma_maps->dmamap_table->dm_mapsize, BUS_DMASYNC_PREWRITE); /* Maps are ready. Start DMA function */ #ifdef DIAGNOSTIC if (dma_maps->dmamap_table->dm_segs[0].ds_addr & ~IDEDMA_TBL_MASK) { printf("pciide_dma_init: addr 0x%lx not properly aligned\n", (u_long)dma_maps->dmamap_table->dm_segs[0].ds_addr); panic("pciide_dma_init: table align"); } #endif /* Clear status bits */ bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0, bus_space_read_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0)); /* Write table addr */ bus_space_write_4(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_TBL], 0, dma_maps->dmamap_table->dm_segs[0].ds_addr); /* set read/write */ bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CMD], 0, ((flags & WDC_DMA_READ) ? IDEDMA_CMD_WRITE : 0) | cp->idedma_cmd); /* remember flags */ dma_maps->dma_flags = flags; return 0; } void pciide_dma_start(v, channel, drive) void *v; int channel, drive; { struct pciide_softc *sc = v; struct pciide_channel *cp = &sc->pciide_channels[channel]; ATADEBUG_PRINT(("pciide_dma_start\n"),DEBUG_XFERS); bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CMD], 0, bus_space_read_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CMD], 0) | IDEDMA_CMD_START); } int pciide_dma_finish(v, channel, drive, force) void *v; int channel, drive; int force; { struct pciide_softc *sc = v; u_int8_t status; int error = 0; struct pciide_channel *cp = &sc->pciide_channels[channel]; struct pciide_dma_maps *dma_maps = &cp->dma_maps[drive]; status = bus_space_read_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0); ATADEBUG_PRINT(("pciide_dma_finish: status 0x%x\n", status), DEBUG_XFERS); if (force == WDC_DMAEND_END && (status & IDEDMA_CTL_INTR) == 0) return WDC_DMAST_NOIRQ; /* stop DMA channel */ bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CMD], 0, bus_space_read_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CMD], 0) & ~IDEDMA_CMD_START); /* Unload the map of the data buffer */ bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0, dma_maps->dmamap_xfer->dm_mapsize, (dma_maps->dma_flags & WDC_DMA_READ) ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_dmat, dma_maps->dmamap_xfer); if ((status & IDEDMA_CTL_ERR) != 0 && force != WDC_DMAEND_ABRT_QUIET) { printf("%s:%d:%d: bus-master DMA error: status=0x%x\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, drive, status); error |= WDC_DMAST_ERR; } if ((status & IDEDMA_CTL_INTR) == 0 && force != WDC_DMAEND_ABRT_QUIET) { printf("%s:%d:%d: bus-master DMA error: missing interrupt, " "status=0x%x\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, drive, status); error |= WDC_DMAST_NOIRQ; } if ((status & IDEDMA_CTL_ACT) != 0 && force != WDC_DMAEND_ABRT_QUIET) { /* data underrun, may be a valid condition for ATAPI */ error |= WDC_DMAST_UNDER; } return error; } void pciide_irqack(chp) struct ata_channel *chp; { struct pciide_channel *cp = CHAN_TO_PCHAN(chp); struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); /* clear status bits in IDE DMA registers */ bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0, bus_space_read_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0)); } /* some common code used by several chip_map */ int pciide_chansetup(sc, channel, interface) struct pciide_softc *sc; int channel; pcireg_t interface; { struct pciide_channel *cp = &sc->pciide_channels[channel]; 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", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); return 0; } aprint_normal("%s: %s channel %s to %s mode\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name, (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ? "configured" : "wired", (interface & PCIIDE_INTERFACE_PCI(channel)) ? "native-PCI" : "compatibility"); return 1; } /* some common code used by several chip channel_map */ void pciide_mapchan(pa, cp, interface, cmdsizep, ctlsizep, pci_intr) struct pci_attach_args *pa; struct pciide_channel *cp; pcireg_t interface; bus_size_t *cmdsizep, *ctlsizep; int (*pci_intr) __P((void *)); { struct ata_channel *wdc_cp = &cp->ata_channel; if (interface & PCIIDE_INTERFACE_PCI(wdc_cp->ch_channel)) pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep, pci_intr); else { pciide_mapregs_compat(pa, cp, wdc_cp->ch_channel, cmdsizep, ctlsizep); if ((cp->ata_channel.ch_flags & ATACH_DISABLED) == 0) pciide_map_compat_intr(pa, cp, wdc_cp->ch_channel); } wdcattach(wdc_cp); } /* * generic code to map the compat intr. */ void pciide_map_compat_intr(pa, cp, compatchan) struct pci_attach_args *pa; struct pciide_channel *cp; int compatchan; { struct pciide_softc *sc = CHAN_TO_PCIIDE(&cp->ata_channel); #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH cp->ih = pciide_machdep_compat_intr_establish(&sc->sc_wdcdev.sc_atac.atac_dev, pa, compatchan, pciide_compat_intr, cp); if (cp->ih == NULL) { #endif aprint_error("%s: no compatibility interrupt for use by %s " "channel\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name); cp->ata_channel.ch_flags |= ATACH_DISABLED; #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH } #endif } void default_chip_map(sc, pa) struct pciide_softc *sc; struct pci_attach_args *pa; { struct pciide_channel *cp; pcireg_t interface = PCI_INTERFACE(pa->pa_class); pcireg_t csr; int channel, drive, s; struct ata_drive_datas *drvp; u_int8_t idedma_ctl; bus_size_t cmdsize, ctlsize; char *failreason; struct wdc_regs *wdr; if (pciide_chipen(sc, pa) == 0) return; if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) { aprint_normal("%s: bus-master DMA support present", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname); if (sc->sc_pp == &default_product_desc && (sc->sc_wdcdev.sc_atac.atac_dev.dv_cfdata->cf_flags & PCIIDE_OPTIONS_DMA) == 0) { aprint_normal(", but unused (no driver support)"); sc->sc_dma_ok = 0; } else { pciide_mapreg_dma(sc, pa); if (sc->sc_dma_ok != 0) aprint_normal(", used without full driver " "support"); } } else { aprint_normal("%s: hardware does not support DMA", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname); sc->sc_dma_ok = 0; } aprint_normal("\n"); 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_pio_cap = 0; sc->sc_wdcdev.sc_atac.atac_dma_cap = 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; 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; wdr = CHAN_TO_WDC_REGS(&cp->ata_channel); if (interface & PCIIDE_INTERFACE_PCI(channel)) pciide_mapregs_native(pa, cp, &cmdsize, &ctlsize, pciide_pci_intr); else pciide_mapregs_compat(pa, cp, cp->ata_channel.ch_channel, &cmdsize, &ctlsize); if (cp->ata_channel.ch_flags & ATACH_DISABLED) continue; /* * Check to see if something appears to be there. */ failreason = NULL; /* * In native mode, always enable the controller. It's * not possible to have an ISA board using the same address * anyway. */ if (interface & PCIIDE_INTERFACE_PCI(channel)) { wdcattach(&cp->ata_channel); continue; } if (!wdcprobe(&cp->ata_channel)) { failreason = "not responding; disabled or no drives?"; goto next; } /* * Now, make sure it's actually attributable to this PCI IDE * channel by trying to access the channel again while the * PCI IDE controller's I/O space is disabled. (If the * channel no longer appears to be there, it belongs to * this controller.) YUCK! */ csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG); pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG, csr & ~PCI_COMMAND_IO_ENABLE); if (wdcprobe(&cp->ata_channel)) failreason = "other hardware responding at addresses"; pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG, csr); next: if (failreason) { aprint_error("%s: %s channel ignored (%s)\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name, failreason); cp->ata_channel.ch_flags |= ATACH_DISABLED; bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, cmdsize); bus_space_unmap(wdr->ctl_iot, wdr->ctl_ioh, ctlsize); } else { pciide_map_compat_intr(pa, cp, cp->ata_channel.ch_channel); wdcattach(&cp->ata_channel); } } if (sc->sc_dma_ok == 0) return; /* Allocate DMA maps */ for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; channel++) { idedma_ctl = 0; cp = &sc->pciide_channels[channel]; for (drive = 0; drive < cp->ata_channel.ch_ndrive; drive++) { drvp = &cp->ata_channel.ch_drive[drive]; /* If no drive, skip */ if ((drvp->drive_flags & DRIVE) == 0) continue; if ((drvp->drive_flags & DRIVE_DMA) == 0) continue; if (pciide_dma_table_setup(sc, channel, drive) != 0) { /* Abort DMA setup */ aprint_error( "%s:%d:%d: can't allocate DMA maps, " "using PIO transfers\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, drive); s = splbio(); drvp->drive_flags &= ~DRIVE_DMA; splx(s); } aprint_normal("%s:%d:%d: using DMA data transfers\n", sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, channel, drive); idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); } 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); } } } void sata_setup_channel(chp) struct ata_channel *chp; { struct ata_drive_datas *drvp; int drive, s; u_int32_t idedma_ctl; struct pciide_channel *cp = CHAN_TO_PCHAN(chp); struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); /* setup DMA if needed */ pciide_channel_dma_setup(cp); idedma_ctl = 0; for (drive = 0; drive < cp->ata_channel.ch_ndrive; drive++) { drvp = &chp->ch_drive[drive]; /* If no drive, skip */ if ((drvp->drive_flags & DRIVE) == 0) continue; if (drvp->drive_flags & DRIVE_UDMA) { /* use Ultra/DMA */ s = splbio(); drvp->drive_flags &= ~DRIVE_DMA; splx(s); idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); } else if (drvp->drive_flags & DRIVE_DMA) { idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); } } /* * Nothing to do to setup modes; it is meaningless in S-ATA * (but many S-ATA drives still want to get the SET_FEATURE * command). */ 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); } }