sys/dev/pci/toshide.c

   1 /*      $NetBSD: toshide.c,v 1.1 2009/09/20 01:10:12 christos Exp $     */
   2
   3 /*-
   4  * Copyright (c) 2009 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: toshide.c,v 1.1 2009/09/20 01:10:12 christos Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34
  35 #include <dev/pci/pcivar.h>
  36 #include <dev/pci/pcidevs.h>
  37 #include <dev/pci/pciidereg.h>
  38 #include <dev/pci/pciidevar.h>
  39 #include <dev/pci/pciide_piccolo_reg.h>
  40
  41 static void piccolo_chip_map(struct pciide_softc *, struct pci_attach_args *);
  42 static void piccolo_setup_channel(struct ata_channel *);
  43
  44 static int  piccolo_match(device_t, cfdata_t, void *);
  45 static void piccolo_attach(device_t, device_t, void *);
  46
  47 CFATTACH_DECL_NEW(toshide, sizeof(struct pciide_softc),
  48     piccolo_match, piccolo_attach, NULL, NULL);
  49
  50 static const struct pciide_product_desc pciide_toshiba2_products[] = {
  51         {
  52                 PCI_PRODUCT_TOSHIBA2_PICCOLO,
  53                 0,
  54                 "Toshiba Piccolo IDE controller",
  55                 piccolo_chip_map,
  56         },
  57         {
  58                 PCI_PRODUCT_TOSHIBA2_PICCOLO2,
  59                 0,
  60                 "Toshiba Piccolo 2 IDE controller",
  61                 piccolo_chip_map,
  62         },
  63         {
  64                 PCI_PRODUCT_TOSHIBA2_PICCOLO3,
  65                 0,
  66                 "Toshiba Piccolo 3 IDE controller",
  67                 piccolo_chip_map,
  68         },
  69         {
  70                 PCI_PRODUCT_TOSHIBA2_PICCOLO5,
  71                 0,
  72                 "Toshiba Piccolo 5 IDE controller",
  73                 piccolo_chip_map,
  74         },
  75         {
  76                 0,
  77                 0,
  78                 NULL,
  79                 NULL,
  80         }
  81 };
  82
  83 static int
  84 piccolo_match(device_t parent, cfdata_t match, void *aux)
  85 {
  86         struct pci_attach_args *pa = aux;
  87
  88         if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_TOSHIBA2) {
  89                 if (pciide_lookup_product(pa->pa_id, pciide_toshiba2_products))
  90                         return 2;
  91         }
  92         return 0;
  93 }
  94
  95 static void
  96 piccolo_attach(device_t parent, device_t self, void *aux)
  97 {
  98         struct pci_attach_args *pa = aux;
  99         struct pciide_softc *sc = device_private(self);
 100         const struct pciide_product_desc *pp;
 101
 102         sc->sc_wdcdev.sc_atac.atac_dev = self;
 103
 104         if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_TOSHIBA2)
 105                 pp = pciide_lookup_product(pa->pa_id, pciide_toshiba2_products);
 106         else
 107                 pp = NULL;
 108         if (pp == NULL)
 109                 panic("toshide_attach");
 110         pciide_common_attach(sc, pa, pp);
 111 }
 112
 113 static void
 114 piccolo_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
 115 {
 116         struct pciide_channel *cp;
 117         bus_size_t cmdsize, ctlsize;
 118         pcireg_t interface;
 119         int channel;
 120
 121         if (pciide_chipen(sc, pa) == 0)
 122                 return;
 123
 124         aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
 125             "bus-master DMA support present");
 126
 127         pciide_mapreg_dma(sc, pa);
 128         aprint_verbose("\n");
 129
 130         sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA32 | ATAC_CAP_DATA16;
 131         sc->sc_wdcdev.sc_atac.atac_pio_cap = 5;
 132
 133         if (sc->sc_dma_ok) {
 134                 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA | ATAC_CAP_UDMA;
 135                 sc->sc_wdcdev.irqack = pciide_irqack;
 136                 sc->sc_wdcdev.sc_atac.atac_dma_cap = 3;
 137                 sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
 138         }
 139
 140         sc->sc_wdcdev.sc_atac.atac_set_modes = piccolo_setup_channel;
 141
 142         sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
 143         sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
 144         /*
 145          * XXX one for now. We'll figure out how to talk to the second channel
 146          * later, hopefully! Second interface config is via the
 147          * "alternate PCI Configuration Space" whatever that is!
 148          */
 149
 150         interface = PCI_INTERFACE(pa->pa_class);
 151
 152         wdc_allocate_regs(&sc->sc_wdcdev);
 153
 154         for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
 155              channel++) {
 156                 cp = &sc->pciide_channels[channel];
 157                 if (pciide_chansetup(sc, channel, interface) == 0)
 158                         continue;
 159
 160                 pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
 161                     pciide_pci_intr);
 162         }
 163 }
 164
 165 static void
 166 piccolo_setup_channel(struct ata_channel *chp)
 167 {
 168         struct ata_drive_datas *drvp;
 169         struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
 170         struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
 171         u_int32_t idedma_ctl;
 172         int drive, s;
 173         pcireg_t pxdx;
 174 #ifdef TOSHIDE_DEBUG
 175         pcireg_t pxdx_prime;
 176 #endif
 177
 178         idedma_ctl = 0;
 179
 180         /* Set up DMA if needed. */
 181         pciide_channel_dma_setup(cp);
 182
 183         for (drive = 0; drive < 2; drive++) {
 184
 185                 drvp = &chp->ch_drive[drive];
 186                 /* If no drive, skip */
 187                 if ((drvp->drive_flags & DRIVE) == 0)
 188                         continue;
 189
 190                 if (drvp->drive_flags & DRIVE_UDMA) {
 191                         /* use Ultra/DMA */
 192                         s = splbio();
 193                         drvp->drive_flags &= ~DRIVE_DMA;
 194                         splx(s);
 195
 196                         /*
 197                          * Use UDMA - we can go up to mode 2 so no need to
 198                          * check anything since nearly all drives with UDMA
 199                          * are mode 2 or faster
 200                          */
 201                         pxdx = pci_conf_read(sc->sc_pc, sc->sc_tag,
 202                             PICCOLO_DMA_TIMING);
 203                         pxdx &= PICCOLO_UDMA_MASK;
 204                         pxdx |= piccolo_udma_times[2];
 205                         pci_conf_write(sc->sc_pc, sc->sc_tag,
 206                             PICCOLO_DMA_TIMING, pxdx);
 207 #ifdef TOSHIDE_DEBUG
 208                         /* XXX sanity check */
 209                         pxdx_prime = pci_conf_read(sc->sc_pc, sc->sc_tag,
 210                             PICCOLO_DMA_TIMING);
 211                         aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
 212                             "UDMA want %x, set %x, got %x\n",
 213                             piccolo_udma_times[2], pxdx, pxdx_prime);
 214 #endif
 215                         idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
 216
 217                 }
 218                 else if (drvp->drive_flags & DRIVE_DMA) {
 219                         /*
 220                          * Use Multiword DMA
 221                          */
 222                         if (drvp->PIO_mode > (drvp->DMA_mode + 2))
 223                                 drvp->PIO_mode = drvp->DMA_mode + 2;
 224                         if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
 225                                 drvp->DMA_mode = (drvp->PIO_mode > 2) ?
 226                                     drvp->PIO_mode - 2 : 0;
 227
 228                         pxdx = pci_conf_read(sc->sc_pc, sc->sc_tag,
 229                             PICCOLO_DMA_TIMING);
 230                         pxdx &= PICCOLO_DMA_MASK;
 231                         pxdx |= piccolo_mw_dma_times[drvp->DMA_mode];
 232                         pci_conf_write(sc->sc_pc, sc->sc_tag,
 233                             PICCOLO_DMA_TIMING, pxdx);
 234 #ifdef TOSHIDE_DEBUG
 235                         /* XXX sanity check */
 236                         pxdx_prime = pci_conf_read(sc->sc_pc, sc->sc_tag,
 237                             PICCOLO_DMA_TIMING);
 238                         aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
 239                             "DMA %d want %x, set %x, got %x\n",
 240                             drvp->DMA_mode,
 241                             piccolo_mw_dma_times[drvp->DMA_mode], pxdx,
 242                             pxdx_prime);
 243 #endif
 244                         idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
 245
 246                 }
 247                 else {
 248                         pxdx = pci_conf_read(sc->sc_pc, sc->sc_tag,
 249                             PICCOLO_PIO_TIMING);
 250                         pxdx &= PICCOLO_PIO_MASK;
 251                         pxdx |= piccolo_pio_times[drvp->PIO_mode];
 252                         pci_conf_write(sc->sc_pc, sc->sc_tag,
 253                             PICCOLO_PIO_TIMING, pxdx);
 254 #ifdef TOSHIDE_DEBUG
 255                         /* XXX sanity check */
 256                         pxdx_prime = pci_conf_read(sc->sc_pc, sc->sc_tag,
 257                             PICCOLO_PIO_TIMING);
 258                         aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
 259                             "PIO %d want %x, set %x, got %x\n", drvp->PIO_mode,
 260                             piccolo_pio_times[drvp->PIO_mode], pxdx,
 261                             pxdx_prime);
 262 #endif
 263                 }
 264
 265         }
 266         if (idedma_ctl != 0) {
 267                 /* Add software bits in status register */
 268                 bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
 269                     idedma_ctl);
 270         }
 271 }