slide.c revision 1.22.8.1
1 /* $NetBSD: slide.c,v 1.22.8.1 2012/04/29 23:04:58 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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: slide.c,v 1.22.8.1 2012/04/29 23:04:58 mrg 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_sl82c105_reg.h> 43 44 static void sl82c105_chip_map(struct pciide_softc*, 45 const struct pci_attach_args*); 46 static void sl82c105_setup_channel(struct ata_channel*); 47 48 static int slide_match(device_t, cfdata_t, void *); 49 static void slide_attach(device_t, device_t, void *); 50 51 CFATTACH_DECL_NEW(slide, sizeof(struct pciide_softc), 52 slide_match, slide_attach, NULL, NULL); 53 54 static const struct pciide_product_desc pciide_symphony_products[] = { 55 { PCI_PRODUCT_SYMPHONY_82C105, 56 0, 57 "Symphony Labs 82C105 IDE controller", 58 sl82c105_chip_map, 59 }, 60 { 0, 61 0, 62 NULL, 63 NULL, 64 } 65 }; 66 67 static const struct pciide_product_desc pciide_winbond_products[] = { 68 { PCI_PRODUCT_WINBOND_W83C553F_1, 69 0, 70 "Winbond W83C553F IDE controller", 71 sl82c105_chip_map, 72 }, 73 { 0, 74 0, 75 NULL, 76 NULL, 77 } 78 }; 79 80 static int 81 slide_match(device_t parent, cfdata_t match, void *aux) 82 { 83 struct pci_attach_args *pa = aux; 84 85 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY) { 86 if (pciide_lookup_product(pa->pa_id, pciide_symphony_products)) 87 return (2); 88 } 89 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_WINBOND) { 90 if (pciide_lookup_product(pa->pa_id, pciide_winbond_products)) 91 return (2); 92 } 93 return (0); 94 } 95 96 static void 97 slide_attach(device_t parent, device_t self, void *aux) 98 { 99 struct pci_attach_args *pa = aux; 100 struct pciide_softc *sc = device_private(self); 101 const struct pciide_product_desc *pp = NULL; 102 103 sc->sc_wdcdev.sc_atac.atac_dev = self; 104 105 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY) 106 pp = pciide_lookup_product(pa->pa_id, pciide_symphony_products); 107 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_WINBOND) 108 pp = pciide_lookup_product(pa->pa_id, pciide_winbond_products); 109 if (pp == NULL) 110 panic("slide_attach"); 111 pciide_common_attach(sc, pa, pp); 112 } 113 114 static int 115 sl82c105_bugchk(const struct pci_attach_args *pa) 116 { 117 118 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_WINBOND || 119 PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_WINBOND_W83C553F_0) 120 return (0); 121 122 if (PCI_REVISION(pa->pa_class) <= 0x05) 123 return (1); 124 125 return (0); 126 } 127 128 static void 129 sl82c105_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa) 130 { 131 struct pciide_channel *cp; 132 pcireg_t interface, idecr; 133 int channel; 134 135 if (pciide_chipen(sc, pa) == 0) 136 return; 137 138 aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev, 139 "bus-master DMA support present"); 140 141 /* 142 * Check to see if we're part of the Winbond 83c553 Southbridge. 143 * If so, we need to disable DMA on rev. <= 5 of the southbridge. 144 */ 145 if (pci_find_device(NULL, sl82c105_bugchk)) { 146 aprint_verbose(" but disabled due to 83c553 rev. <= 0x05"); 147 sc->sc_dma_ok = 0; 148 } else 149 pciide_mapreg_dma(sc, pa); 150 aprint_verbose("\n"); 151 152 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA32 | ATAC_CAP_DATA16; 153 sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; 154 if (sc->sc_dma_ok) { 155 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 156 sc->sc_wdcdev.irqack = pciide_irqack; 157 sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; 158 } 159 sc->sc_wdcdev.sc_atac.atac_set_modes = sl82c105_setup_channel; 160 161 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; 162 sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS; 163 164 idecr = pci_conf_read(sc->sc_pc, sc->sc_tag, SYMPH_IDECSR); 165 166 interface = PCI_INTERFACE(pa->pa_class); 167 168 wdc_allocate_regs(&sc->sc_wdcdev); 169 170 for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels; 171 channel++) { 172 cp = &sc->pciide_channels[channel]; 173 if (pciide_chansetup(sc, channel, interface) == 0) 174 continue; 175 if ((channel == 0 && (idecr & IDECR_P0EN) == 0) || 176 (channel == 1 && (idecr & IDECR_P1EN) == 0)) { 177 aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev, 178 "%s channel ignored (disabled)\n", cp->name); 179 cp->ata_channel.ch_flags |= ATACH_DISABLED; 180 continue; 181 } 182 pciide_mapchan(pa, cp, interface, pciide_pci_intr); 183 } 184 } 185 186 static void 187 sl82c105_setup_channel(struct ata_channel *chp) 188 { 189 struct ata_drive_datas *drvp; 190 struct pciide_channel *cp = CHAN_TO_PCHAN(chp); 191 struct pciide_softc *sc = CHAN_TO_PCIIDE(chp); 192 int pxdx_reg, drive, s; 193 pcireg_t pxdx; 194 195 /* Set up DMA if needed. */ 196 pciide_channel_dma_setup(cp); 197 198 for (drive = 0; drive < 2; drive++) { 199 pxdx_reg = ((chp->ch_channel == 0) ? SYMPH_P0D0CR 200 : SYMPH_P1D0CR) + 201 (drive * 4); 202 203 pxdx = pci_conf_read(sc->sc_pc, sc->sc_tag, pxdx_reg); 204 205 pxdx &= ~(PxDx_CMD_ON_MASK|PxDx_CMD_OFF_MASK); 206 pxdx &= ~(PxDx_PWEN|PxDx_RDYEN|PxDx_RAEN); 207 208 drvp = &chp->ch_drive[drive]; 209 /* If no drive, skip. */ 210 if ((drvp->drive_flags & DRIVE) == 0) { 211 pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx); 212 continue; 213 } 214 215 if (drvp->drive_flags & DRIVE_DMA) { 216 /* 217 * Timings will be used for both PIO and DMA, 218 * so adjust DMA mode if needed. 219 */ 220 if (drvp->PIO_mode >= 3) { 221 if ((drvp->DMA_mode + 2) > drvp->PIO_mode) 222 drvp->DMA_mode = drvp->PIO_mode - 2; 223 if (drvp->DMA_mode < 1) { 224 /* 225 * Can't mix both PIO and DMA. 226 * Disable DMA. 227 */ 228 s = splbio(); 229 drvp->drive_flags &= ~DRIVE_DMA; 230 splx(s); 231 } 232 } else { 233 /* 234 * Can't mix both PIO and DMA. Disable 235 * DMA. 236 */ 237 s = splbio(); 238 drvp->drive_flags &= ~DRIVE_DMA; 239 splx(s); 240 } 241 } 242 243 if (drvp->drive_flags & DRIVE_DMA) { 244 /* Use multi-word DMA. */ 245 pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_on << 246 PxDx_CMD_ON_SHIFT; 247 pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_off; 248 } else { 249 pxdx |= symph_pio_times[drvp->PIO_mode].cmd_on << 250 PxDx_CMD_ON_SHIFT; 251 pxdx |= symph_pio_times[drvp->PIO_mode].cmd_off; 252 } 253 254 /* XXX PxDx_PWEN? PxDx_RDYEN? PxDx_RAEN? */ 255 256 /* ...and set the mode for this drive. */ 257 pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx); 258 } 259 } 260
Indexes created Thu Oct 02 01:09:59 GMT 2025