Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/rccide.c
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1 /* $NetBSD: rccide.c,v 1.7 2004/01/03 22:56:53 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2003 By Noon Software, Inc. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The names of the authors may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: rccide.c,v 1.7 2004/01/03 22:56:53 thorpej 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 40 static void serverworks_chip_map(struct pciide_softc *, 41 struct pci_attach_args *); 42 static void serverworks_setup_channel(struct wdc_channel *); 43 static int serverworks_pci_intr(void *); 44 static int serverworkscsb6_pci_intr(void *); 45 46 static int rccide_match(struct device *, struct cfdata *, void *); 47 static void rccide_attach(struct device *, struct device *, void *); 48 49 CFATTACH_DECL(rccide, sizeof(struct pciide_softc), 50 rccide_match, rccide_attach, NULL, NULL); 51 52 static const struct pciide_product_desc pciide_serverworks_products[] = { 53 { PCI_PRODUCT_SERVERWORKS_OSB4_IDE, 54 0, 55 "ServerWorks OSB4 IDE Controller", 56 serverworks_chip_map, 57 }, 58 { PCI_PRODUCT_SERVERWORKS_CSB5_IDE, 59 0, 60 "ServerWorks CSB5 IDE Controller", 61 serverworks_chip_map, 62 }, 63 { PCI_PRODUCT_SERVERWORKS_CSB6_IDE, 64 0, 65 "ServerWorks CSB6 RAID/IDE Controller", 66 serverworks_chip_map, 67 }, 68 { PCI_PRODUCT_SERVERWORKS_CSB6_RAID, 69 0, 70 "ServerWorks CSB6 RAID/IDE Controller", 71 serverworks_chip_map, 72 }, 73 { 0, 74 0, 75 NULL, 76 NULL, 77 } 78 }; 79 80 static int 81 rccide_match(struct device *parent, struct cfdata *match, void *aux) 82 { 83 struct pci_attach_args *pa = aux; 84 85 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SERVERWORKS && 86 PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE && 87 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) { 88 if (pciide_lookup_product(pa->pa_id, 89 pciide_serverworks_products)) 90 return (2); 91 } 92 return (0); 93 } 94 95 static void 96 rccide_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct pci_attach_args *pa = aux; 99 struct pciide_softc *sc = (void *)self; 100 101 pciide_common_attach(sc, pa, 102 pciide_lookup_product(pa->pa_id, pciide_serverworks_products)); 103 } 104 105 static void 106 serverworks_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa) 107 { 108 struct pciide_channel *cp; 109 pcireg_t interface = PCI_INTERFACE(pa->pa_class); 110 pcitag_t pcib_tag; 111 int channel; 112 bus_size_t cmdsize, ctlsize; 113 114 if (pciide_chipen(sc, pa) == 0) 115 return; 116 117 aprint_normal("%s: bus-master DMA support present", 118 sc->sc_wdcdev.sc_dev.dv_xname); 119 pciide_mapreg_dma(sc, pa); 120 aprint_normal("\n"); 121 sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 | 122 WDC_CAPABILITY_MODE; 123 124 if (sc->sc_dma_ok) { 125 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA; 126 sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK; 127 sc->sc_wdcdev.irqack = pciide_irqack; 128 } 129 sc->sc_wdcdev.PIO_cap = 4; 130 sc->sc_wdcdev.DMA_cap = 2; 131 switch (sc->sc_pp->ide_product) { 132 case PCI_PRODUCT_SERVERWORKS_OSB4_IDE: 133 sc->sc_wdcdev.UDMA_cap = 2; 134 break; 135 case PCI_PRODUCT_SERVERWORKS_CSB5_IDE: 136 if (PCI_REVISION(pa->pa_class) < 0x92) 137 sc->sc_wdcdev.UDMA_cap = 4; 138 else 139 sc->sc_wdcdev.UDMA_cap = 5; 140 break; 141 case PCI_PRODUCT_SERVERWORKS_CSB6_IDE: 142 case PCI_PRODUCT_SERVERWORKS_CSB6_RAID: 143 sc->sc_wdcdev.UDMA_cap = 5; 144 break; 145 } 146 147 sc->sc_wdcdev.set_modes = serverworks_setup_channel; 148 sc->sc_wdcdev.channels = sc->wdc_chanarray; 149 sc->sc_wdcdev.nchannels = 2; 150 151 for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) { 152 cp = &sc->pciide_channels[channel]; 153 if (pciide_chansetup(sc, channel, interface) == 0) 154 continue; 155 switch (sc->sc_pp->ide_product) { 156 case PCI_PRODUCT_SERVERWORKS_CSB6_IDE: 157 case PCI_PRODUCT_SERVERWORKS_CSB6_RAID: 158 pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, 159 serverworkscsb6_pci_intr); 160 break; 161 default: 162 pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, 163 serverworks_pci_intr); 164 } 165 } 166 167 pcib_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0); 168 pci_conf_write(pa->pa_pc, pcib_tag, 0x64, 169 (pci_conf_read(pa->pa_pc, pcib_tag, 0x64) & ~0x2000) | 0x4000); 170 } 171 172 static void 173 serverworks_setup_channel(struct wdc_channel *chp) 174 { 175 struct ata_drive_datas *drvp; 176 struct pciide_channel *cp = (struct pciide_channel*)chp; 177 struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.ch_wdc; 178 struct wdc_softc *wdc = &sc->sc_wdcdev; 179 int channel = chp->ch_channel; 180 int drive, unit; 181 u_int32_t pio_time, dma_time, pio_mode, udma_mode; 182 u_int32_t idedma_ctl; 183 static const u_int8_t pio_modes[5] = {0x5d, 0x47, 0x34, 0x22, 0x20}; 184 static const u_int8_t dma_modes[3] = {0x77, 0x21, 0x20}; 185 186 /* setup DMA if needed */ 187 pciide_channel_dma_setup(cp); 188 189 pio_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x40); 190 dma_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x44); 191 pio_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x48); 192 udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54); 193 194 pio_time &= ~(0xffff << (16 * channel)); 195 dma_time &= ~(0xffff << (16 * channel)); 196 pio_mode &= ~(0xff << (8 * channel + 16)); 197 udma_mode &= ~(0xff << (8 * channel + 16)); 198 udma_mode &= ~(3 << (2 * channel)); 199 200 idedma_ctl = 0; 201 202 /* Per drive settings */ 203 for (drive = 0; drive < 2; drive++) { 204 drvp = &chp->ch_drive[drive]; 205 /* If no drive, skip */ 206 if ((drvp->drive_flags & DRIVE) == 0) 207 continue; 208 unit = drive + 2 * channel; 209 /* add timing values, setup DMA if needed */ 210 pio_time |= pio_modes[drvp->PIO_mode] << (8 * (unit^1)); 211 pio_mode |= drvp->PIO_mode << (4 * unit + 16); 212 if ((wdc->cap & WDC_CAPABILITY_UDMA) && 213 (drvp->drive_flags & DRIVE_UDMA)) { 214 /* use Ultra/DMA, check for 80-pin cable */ 215 if (drvp->UDMA_mode > 2 && 216 (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag, 217 PCI_SUBSYS_ID_REG)) 218 & (1 << (14 + channel))) == 0) 219 drvp->UDMA_mode = 2; 220 dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1)); 221 udma_mode |= drvp->UDMA_mode << (4 * unit + 16); 222 udma_mode |= 1 << unit; 223 idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); 224 } else if ((wdc->cap & WDC_CAPABILITY_DMA) && 225 (drvp->drive_flags & DRIVE_DMA)) { 226 /* use Multiword DMA */ 227 drvp->drive_flags &= ~DRIVE_UDMA; 228 dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1)); 229 idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive); 230 } else { 231 /* PIO only */ 232 drvp->drive_flags &= ~(DRIVE_UDMA | DRIVE_DMA); 233 } 234 } 235 236 pci_conf_write(sc->sc_pc, sc->sc_tag, 0x40, pio_time); 237 pci_conf_write(sc->sc_pc, sc->sc_tag, 0x44, dma_time); 238 if (sc->sc_pp->ide_product != PCI_PRODUCT_SERVERWORKS_OSB4_IDE) 239 pci_conf_write(sc->sc_pc, sc->sc_tag, 0x48, pio_mode); 240 pci_conf_write(sc->sc_pc, sc->sc_tag, 0x54, udma_mode); 241 242 if (idedma_ctl != 0) { 243 /* Add software bits in status register */ 244 bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0, 245 idedma_ctl); 246 } 247 } 248 249 static int 250 serverworks_pci_intr(arg) 251 void *arg; 252 { 253 struct pciide_softc *sc = arg; 254 struct pciide_channel *cp; 255 struct wdc_channel *wdc_cp; 256 int rv = 0; 257 int dmastat, i, crv; 258 259 for (i = 0; i < sc->sc_wdcdev.nchannels; i++) { 260 cp = &sc->pciide_channels[i]; 261 dmastat = bus_space_read_1(sc->sc_dma_iot, 262 cp->dma_iohs[IDEDMA_CTL], 0); 263 if ((dmastat & (IDEDMA_CTL_ACT | IDEDMA_CTL_INTR)) != 264 IDEDMA_CTL_INTR) 265 continue; 266 wdc_cp = &cp->wdc_channel; 267 crv = wdcintr(wdc_cp); 268 if (crv == 0) { 269 printf("%s:%d: bogus intr\n", 270 sc->sc_wdcdev.sc_dev.dv_xname, i); 271 bus_space_write_1(sc->sc_dma_iot, 272 cp->dma_iohs[IDEDMA_CTL], 0, dmastat); 273 } else 274 rv = 1; 275 } 276 return rv; 277 } 278 279 static int 280 serverworkscsb6_pci_intr(arg) 281 void *arg; 282 { 283 struct pciide_softc *sc = arg; 284 struct pciide_channel *cp; 285 struct wdc_channel *wdc_cp; 286 int rv = 0; 287 int i, crv; 288 289 for (i = 0; i < sc->sc_wdcdev.nchannels; i++) { 290 cp = &sc->pciide_channels[i]; 291 wdc_cp = &cp->wdc_channel; 292 /* 293 * The CSB6 doesn't assert IDEDMA_CTL_INTR for non-DMA commands. 294 * Until we find a way to know if the controller posted an 295 * interrupt, always call wdcintr(), which will try to guess 296 * if the interrupt was for us or not (and checks 297 * IDEDMA_CTL_INTR for DMA commands only). 298 */ 299 crv = wdcintr(wdc_cp); 300 if (crv != 0) 301 rv = 1; 302 } 303 return rv; 304 }
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