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siside.c revision 1.19
      1 /*	$NetBSD: siside.c,v 1.19 2006/06/26 18:19:08 xtraeme Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000, 2001 Manuel Bouyer.
      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. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Manuel Bouyer.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: siside.c,v 1.19 2006/06/26 18:19:08 xtraeme 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_sis_reg.h>
     43 
     44 static void sis_chip_map(struct pciide_softc *, struct pci_attach_args *);
     45 static void sis_sata_chip_map(struct pciide_softc *, struct pci_attach_args *);
     46 static void sis_setup_channel(struct ata_channel *);
     47 static void sis96x_setup_channel(struct ata_channel *);
     48 
     49 static int  sis_hostbr_match(struct pci_attach_args *);
     50 static int  sis_south_match(struct pci_attach_args *);
     51 
     52 static int  siside_match(struct device *, struct cfdata *, void *);
     53 static void siside_attach(struct device *, struct device *, void *);
     54 
     55 CFATTACH_DECL(siside, sizeof(struct pciide_softc),
     56     siside_match, siside_attach, NULL, NULL);
     57 
     58 static const struct pciide_product_desc pciide_sis_products[] =  {
     59 	{ PCI_PRODUCT_SIS_5597_IDE,
     60 	  0,
     61 	  NULL,
     62 	  sis_chip_map,
     63 	},
     64 	{ PCI_PRODUCT_SIS_180_SATA,
     65 	  0,
     66 	  NULL,
     67 	  sis_sata_chip_map,
     68 	},
     69 	{ PCI_PRODUCT_SIS_181_SATA,
     70 	  0,
     71 	  NULL,
     72 	  sis_sata_chip_map,
     73 	},
     74 	{ PCI_PRODUCT_SIS_182_SATA,
     75 	  0,
     76 	  NULL,
     77 	  sis_sata_chip_map,
     78 	},
     79 	{ 0,
     80 	  0,
     81 	  NULL,
     82 	  NULL
     83 	}
     84 };
     85 
     86 static int
     87 siside_match(struct device *parent, struct cfdata *match, void *aux)
     88 {
     89 	struct pci_attach_args *pa = aux;
     90 
     91 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS) {
     92 		if (pciide_lookup_product(pa->pa_id, pciide_sis_products))
     93 			return (2);
     94 	}
     95 	return (0);
     96 }
     97 
     98 static void
     99 siside_attach(struct device *parent, struct device *self, void *aux)
    100 {
    101 	struct pci_attach_args *pa = aux;
    102 	struct pciide_softc *sc = (struct pciide_softc *)self;
    103 
    104 	pciide_common_attach(sc, pa,
    105 	    pciide_lookup_product(pa->pa_id, pciide_sis_products));
    106 
    107 }
    108 
    109 static struct sis_hostbr_type {
    110 	u_int16_t id;
    111 	u_int8_t rev;
    112 	u_int8_t udma_mode;
    113 	const char *name;
    114 	u_int8_t type;
    115 #define SIS_TYPE_NOUDMA	0
    116 #define SIS_TYPE_66	1
    117 #define SIS_TYPE_100OLD	2
    118 #define SIS_TYPE_100NEW 3
    119 #define SIS_TYPE_133OLD 4
    120 #define SIS_TYPE_133NEW 5
    121 #define SIS_TYPE_SOUTH	6
    122 } sis_hostbr_type[] = {
    123 	/* Most infos here are from sos (at) freebsd.org */
    124 	{PCI_PRODUCT_SIS_530HB, 0x00, 4, "530", SIS_TYPE_66},
    125 #if 0
    126 	/*
    127 	 * controllers associated to a rev 0x2 530 Host to PCI Bridge
    128 	 * have problems with UDMA (info provided by Christos)
    129 	 */
    130 	{PCI_PRODUCT_SIS_530HB, 0x02, 0, "530 (buggy)", SIS_TYPE_NOUDMA},
    131 #endif
    132 	{PCI_PRODUCT_SIS_540HB, 0x00, 4, "540", SIS_TYPE_66},
    133 	{PCI_PRODUCT_SIS_550HB, 0x00, 4, "550", SIS_TYPE_66},
    134 	{PCI_PRODUCT_SIS_620,   0x00, 4, "620", SIS_TYPE_66},
    135 	{PCI_PRODUCT_SIS_630,   0x00, 4, "630", SIS_TYPE_66},
    136 	{PCI_PRODUCT_SIS_630,   0x30, 5, "630S", SIS_TYPE_100NEW},
    137 	{PCI_PRODUCT_SIS_633,   0x00, 5, "633", SIS_TYPE_100NEW},
    138 	{PCI_PRODUCT_SIS_635,   0x00, 5, "635", SIS_TYPE_100NEW},
    139 	{PCI_PRODUCT_SIS_640,   0x00, 4, "640", SIS_TYPE_SOUTH},
    140 	{PCI_PRODUCT_SIS_645,   0x00, 6, "645", SIS_TYPE_SOUTH},
    141 	{PCI_PRODUCT_SIS_646,   0x00, 6, "645DX", SIS_TYPE_SOUTH},
    142 	{PCI_PRODUCT_SIS_648,   0x00, 6, "648", SIS_TYPE_SOUTH},
    143 	{PCI_PRODUCT_SIS_650,   0x00, 6, "650", SIS_TYPE_SOUTH},
    144 	{PCI_PRODUCT_SIS_651,   0x00, 6, "651", SIS_TYPE_SOUTH},
    145 	{PCI_PRODUCT_SIS_652,   0x00, 6, "652", SIS_TYPE_SOUTH},
    146 	{PCI_PRODUCT_SIS_655,   0x00, 6, "655", SIS_TYPE_SOUTH},
    147 	{PCI_PRODUCT_SIS_658,   0x00, 6, "658", SIS_TYPE_SOUTH},
    148 	{PCI_PRODUCT_SIS_661,	0x00, 6, "661", SIS_TYPE_SOUTH},
    149 	{PCI_PRODUCT_SIS_730,   0x00, 5, "730", SIS_TYPE_100OLD},
    150 	{PCI_PRODUCT_SIS_733,   0x00, 5, "733", SIS_TYPE_100NEW},
    151 	{PCI_PRODUCT_SIS_735,   0x00, 5, "735", SIS_TYPE_100NEW},
    152 	{PCI_PRODUCT_SIS_740,   0x00, 5, "740", SIS_TYPE_SOUTH},
    153 	{PCI_PRODUCT_SIS_741,   0x00, 5, "741", SIS_TYPE_SOUTH},
    154 	{PCI_PRODUCT_SIS_745,   0x00, 5, "745", SIS_TYPE_100NEW},
    155 	{PCI_PRODUCT_SIS_746,   0x00, 6, "746", SIS_TYPE_SOUTH},
    156 	{PCI_PRODUCT_SIS_748,   0x00, 6, "748", SIS_TYPE_SOUTH},
    157 	{PCI_PRODUCT_SIS_750,   0x00, 6, "750", SIS_TYPE_SOUTH},
    158 	{PCI_PRODUCT_SIS_751,   0x00, 6, "751", SIS_TYPE_SOUTH},
    159 	{PCI_PRODUCT_SIS_752,   0x00, 6, "752", SIS_TYPE_SOUTH},
    160 	{PCI_PRODUCT_SIS_755,   0x00, 6, "755", SIS_TYPE_SOUTH},
    161 	{PCI_PRODUCT_SIS_760,	0x00, 6, "760", SIS_TYPE_133NEW},
    162 	/*
    163 	 * From sos (at) freebsd.org: the 0x961 ID will never be found in real world
    164 	 * {PCI_PRODUCT_SIS_961,   0x00, 6, "961", SIS_TYPE_133NEW},
    165 	 */
    166 	{PCI_PRODUCT_SIS_962,   0x00, 6, "962", SIS_TYPE_133NEW},
    167 	{PCI_PRODUCT_SIS_963,   0x00, 6, "963", SIS_TYPE_133NEW},
    168 	{PCI_PRODUCT_SIS_964,   0x00, 6, "964", SIS_TYPE_133NEW},
    169 	{PCI_PRODUCT_SIS_965,   0x00, 6, "965", SIS_TYPE_133NEW},
    170 };
    171 
    172 static struct sis_hostbr_type *sis_hostbr_type_match;
    173 
    174 static int
    175 sis_hostbr_match(struct pci_attach_args *pa)
    176 {
    177 	int i;
    178 	pcireg_t id, reg;
    179 
    180 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SIS)
    181 		return 0;
    182 	if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503) {
    183 		reg = pci_conf_read(pa->pa_pc, pa->pa_tag, SIS96x_DETECT);
    184 		pci_conf_write(pa->pa_pc, pa->pa_tag, SIS96x_DETECT,
    185 		    reg | SIS96x_DETECT_MASQ);
    186 		id = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
    187 		if (((PCI_PRODUCT(id) & 0xfff0) != 0x0960)
    188 		    && (PCI_PRODUCT(id) != 0x0018)) {
    189 			pci_conf_write(pa->pa_pc, pa->pa_tag, SIS96x_DETECT,
    190 			    reg);
    191 		} else {
    192 			pa->pa_id = id;
    193 		}
    194 	}
    195 
    196 	sis_hostbr_type_match = NULL;
    197 	for (i = 0;
    198 	    i < sizeof(sis_hostbr_type) / sizeof(sis_hostbr_type[0]);
    199 	    i++) {
    200 		if (PCI_PRODUCT(pa->pa_id) == sis_hostbr_type[i].id &&
    201 		    PCI_REVISION(pa->pa_class) >= sis_hostbr_type[i].rev)
    202 			sis_hostbr_type_match = &sis_hostbr_type[i];
    203 	}
    204 	return (sis_hostbr_type_match != NULL);
    205 }
    206 
    207 static int
    208 sis_south_match(struct pci_attach_args *pa)
    209 {
    210 
    211 	return (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS &&
    212 		PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503 &&
    213 		PCI_REVISION(pa->pa_class) >= 0x10);
    214 }
    215 
    216 static void
    217 sis_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
    218 {
    219 	struct pciide_channel *cp;
    220 	int channel;
    221 	u_int8_t sis_ctr0 = pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_CTRL0);
    222 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
    223 	pcireg_t rev = PCI_REVISION(pa->pa_class);
    224 	bus_size_t cmdsize, ctlsize;
    225 
    226 	if (pciide_chipen(sc, pa) == 0)
    227 		return;
    228 
    229 	aprint_normal("%s: Silicon Integrated Systems ",
    230 	    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
    231 	pci_find_device(NULL, sis_hostbr_match);
    232 	if (sis_hostbr_type_match) {
    233 		if (sis_hostbr_type_match->type == SIS_TYPE_SOUTH) {
    234 			pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_57,
    235 			    pciide_pci_read(sc->sc_pc, sc->sc_tag,
    236 			    SIS_REG_57) & 0x7f);
    237 			if (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag,
    238 			    PCI_ID_REG)) == SIS_PRODUCT_5518) {
    239 				aprint_normal("96X UDMA%d",
    240 				    sis_hostbr_type_match->udma_mode);
    241 				sc->sis_type = SIS_TYPE_133NEW;
    242 				sc->sc_wdcdev.sc_atac.atac_udma_cap =
    243 			    	    sis_hostbr_type_match->udma_mode;
    244 			} else {
    245 				if (pci_find_device(NULL, sis_south_match)) {
    246 					sc->sis_type = SIS_TYPE_133OLD;
    247 					sc->sc_wdcdev.sc_atac.atac_udma_cap =
    248 				    	    sis_hostbr_type_match->udma_mode;
    249 				} else {
    250 					sc->sis_type = SIS_TYPE_100NEW;
    251 					sc->sc_wdcdev.sc_atac.atac_udma_cap =
    252 					    sis_hostbr_type_match->udma_mode;
    253 				}
    254 			}
    255 		} else {
    256 			sc->sis_type = sis_hostbr_type_match->type;
    257 			sc->sc_wdcdev.sc_atac.atac_udma_cap =
    258 		    	    sis_hostbr_type_match->udma_mode;
    259 		}
    260 		aprint_normal(sis_hostbr_type_match->name);
    261 	} else {
    262 		aprint_normal("5597/5598");
    263 		if (rev >= 0xd0) {
    264 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
    265 			sc->sis_type = SIS_TYPE_66;
    266 		} else {
    267 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 0;
    268 			sc->sis_type = SIS_TYPE_NOUDMA;
    269 		}
    270 	}
    271 	aprint_normal(" IDE controller (rev. 0x%02x)\n",
    272 	    PCI_REVISION(pa->pa_class));
    273 	aprint_normal("%s: bus-master DMA support present",
    274 	    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
    275 	pciide_mapreg_dma(sc, pa);
    276 	aprint_normal("\n");
    277 
    278 	sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    279 	if (sc->sc_dma_ok) {
    280 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
    281 		sc->sc_wdcdev.irqack = pciide_irqack;
    282 		if (sc->sis_type >= SIS_TYPE_66)
    283 			sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA;
    284 	}
    285 
    286 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    287 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    288 
    289 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    290 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
    291 	switch(sc->sis_type) {
    292 	case SIS_TYPE_NOUDMA:
    293 	case SIS_TYPE_66:
    294 	case SIS_TYPE_100OLD:
    295 		sc->sc_wdcdev.sc_atac.atac_set_modes = sis_setup_channel;
    296 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_MISC,
    297 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_MISC) |
    298 		    SIS_MISC_TIM_SEL | SIS_MISC_FIFO_SIZE | SIS_MISC_GTC);
    299 		break;
    300 	case SIS_TYPE_100NEW:
    301 	case SIS_TYPE_133OLD:
    302 		sc->sc_wdcdev.sc_atac.atac_set_modes = sis_setup_channel;
    303 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_49,
    304 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_49) | 0x01);
    305 		break;
    306 	case SIS_TYPE_133NEW:
    307 		sc->sc_wdcdev.sc_atac.atac_set_modes = sis96x_setup_channel;
    308 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_50,
    309 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_50) & 0xf7);
    310 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_52,
    311 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_52) & 0xf7);
    312 		break;
    313 	}
    314 
    315 	wdc_allocate_regs(&sc->sc_wdcdev);
    316 
    317 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    318 	     channel++) {
    319 		cp = &sc->pciide_channels[channel];
    320 		if (pciide_chansetup(sc, channel, interface) == 0)
    321 			continue;
    322 		if ((channel == 0 && (sis_ctr0 & SIS_CTRL0_CHAN0_EN) == 0) ||
    323 		    (channel == 1 && (sis_ctr0 & SIS_CTRL0_CHAN1_EN) == 0)) {
    324 			aprint_normal("%s: %s channel ignored (disabled)\n",
    325 			    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name);
    326 			cp->ata_channel.ch_flags |= ATACH_DISABLED;
    327 			continue;
    328 		}
    329 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
    330 		    pciide_pci_intr);
    331 	}
    332 }
    333 
    334 static void
    335 sis96x_setup_channel(struct ata_channel *chp)
    336 {
    337 	struct ata_drive_datas *drvp;
    338 	int drive, s;
    339 	u_int32_t sis_tim;
    340 	u_int32_t idedma_ctl;
    341 	int regtim;
    342 	struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
    343 	struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
    344 
    345 	sis_tim = 0;
    346 	idedma_ctl = 0;
    347 	/* setup DMA if needed */
    348 	pciide_channel_dma_setup(cp);
    349 
    350 	for (drive = 0; drive < 2; drive++) {
    351 		regtim = SIS_TIM133(
    352 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_57),
    353 		    chp->ch_channel, drive);
    354 		drvp = &chp->ch_drive[drive];
    355 		/* If no drive, skip */
    356 		if ((drvp->drive_flags & DRIVE) == 0)
    357 			continue;
    358 		/* add timing values, setup DMA if needed */
    359 		if (drvp->drive_flags & DRIVE_UDMA) {
    360 			/* use Ultra/DMA */
    361 			s = splbio();
    362 			drvp->drive_flags &= ~DRIVE_DMA;
    363 			splx(s);
    364 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
    365 			    SIS96x_REG_CBL(chp->ch_channel)) & SIS96x_REG_CBL_33) {
    366 				if (drvp->UDMA_mode > 2)
    367 					drvp->UDMA_mode = 2;
    368 			}
    369 			sis_tim |= sis_udma133new_tim[drvp->UDMA_mode];
    370 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
    371 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
    372 		} else if (drvp->drive_flags & DRIVE_DMA) {
    373 			/*
    374 			 * use Multiword DMA
    375 			 * Timings will be used for both PIO and DMA,
    376 			 * so adjust DMA mode if needed
    377 			 */
    378 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
    379 				drvp->PIO_mode = drvp->DMA_mode + 2;
    380 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
    381 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
    382 				    drvp->PIO_mode - 2 : 0;
    383 			sis_tim |= sis_dma133new_tim[drvp->DMA_mode];
    384 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
    385 		} else {
    386 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
    387 		}
    388 		ATADEBUG_PRINT(("sis96x_setup_channel: new timings reg for "
    389 		    "channel %d drive %d: 0x%x (reg 0x%x)\n",
    390 		    chp->ch_channel, drive, sis_tim, regtim), DEBUG_PROBE);
    391 		pci_conf_write(sc->sc_pc, sc->sc_tag, regtim, sis_tim);
    392 	}
    393 	if (idedma_ctl != 0) {
    394 		/* Add software bits in status register */
    395 		bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
    396 		    idedma_ctl);
    397 	}
    398 }
    399 
    400 static void
    401 sis_setup_channel(struct ata_channel *chp)
    402 {
    403 	struct ata_drive_datas *drvp;
    404 	int drive, s;
    405 	u_int32_t sis_tim;
    406 	u_int32_t idedma_ctl;
    407 	struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
    408 	struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
    409 
    410 	ATADEBUG_PRINT(("sis_setup_channel: old timings reg for "
    411 	    "channel %d 0x%x\n", chp->ch_channel,
    412 	    pci_conf_read(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->ch_channel))),
    413 	    DEBUG_PROBE);
    414 	sis_tim = 0;
    415 	idedma_ctl = 0;
    416 	/* setup DMA if needed */
    417 	pciide_channel_dma_setup(cp);
    418 
    419 	for (drive = 0; drive < 2; drive++) {
    420 		drvp = &chp->ch_drive[drive];
    421 		/* If no drive, skip */
    422 		if ((drvp->drive_flags & DRIVE) == 0)
    423 			continue;
    424 		/* add timing values, setup DMA if needed */
    425 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
    426 		    (drvp->drive_flags & DRIVE_UDMA) == 0)
    427 			goto pio;
    428 
    429 		if (drvp->drive_flags & DRIVE_UDMA) {
    430 			/* use Ultra/DMA */
    431 			s = splbio();
    432 			drvp->drive_flags &= ~DRIVE_DMA;
    433 			splx(s);
    434 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
    435 			    SIS_REG_CBL) & SIS_REG_CBL_33(chp->ch_channel)) {
    436 				if (drvp->UDMA_mode > 2)
    437 					drvp->UDMA_mode = 2;
    438 			}
    439 			switch (sc->sis_type) {
    440 			case SIS_TYPE_66:
    441 			case SIS_TYPE_100OLD:
    442 				sis_tim |= sis_udma66_tim[drvp->UDMA_mode] <<
    443 				    SIS_TIM66_UDMA_TIME_OFF(drive);
    444 				break;
    445 			case SIS_TYPE_100NEW:
    446 				sis_tim |=
    447 				    sis_udma100new_tim[drvp->UDMA_mode] <<
    448 				    SIS_TIM100_UDMA_TIME_OFF(drive);
    449 			case SIS_TYPE_133OLD:
    450 				sis_tim |=
    451 				    sis_udma133old_tim[drvp->UDMA_mode] <<
    452 				    SIS_TIM100_UDMA_TIME_OFF(drive);
    453 				break;
    454 			default:
    455 				aprint_error("unknown SiS IDE type %d\n",
    456 				    sc->sis_type);
    457 			}
    458 		} else {
    459 			/*
    460 			 * use Multiword DMA
    461 			 * Timings will be used for both PIO and DMA,
    462 			 * so adjust DMA mode if needed
    463 			 */
    464 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
    465 				drvp->PIO_mode = drvp->DMA_mode + 2;
    466 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
    467 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
    468 				    drvp->PIO_mode - 2 : 0;
    469 			if (drvp->DMA_mode == 0)
    470 				drvp->PIO_mode = 0;
    471 		}
    472 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
    473 pio:		switch (sc->sis_type) {
    474 		case SIS_TYPE_NOUDMA:
    475 		case SIS_TYPE_66:
    476 		case SIS_TYPE_100OLD:
    477 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
    478 			    SIS_TIM66_ACT_OFF(drive);
    479 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
    480 			    SIS_TIM66_REC_OFF(drive);
    481 			break;
    482 		case SIS_TYPE_100NEW:
    483 		case SIS_TYPE_133OLD:
    484 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
    485 			    SIS_TIM100_ACT_OFF(drive);
    486 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
    487 			    SIS_TIM100_REC_OFF(drive);
    488 			break;
    489 		default:
    490 			aprint_error("unknown SiS IDE type %d\n",
    491 			    sc->sis_type);
    492 		}
    493 	}
    494 	ATADEBUG_PRINT(("sis_setup_channel: new timings reg for "
    495 	    "channel %d 0x%x\n", chp->ch_channel, sis_tim), DEBUG_PROBE);
    496 	pci_conf_write(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->ch_channel),
    497 		       sis_tim);
    498 	if (idedma_ctl != 0) {
    499 		/* Add software bits in status register */
    500 		bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
    501 		    idedma_ctl);
    502 	}
    503 }
    504 
    505 static void
    506 sis_sata_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
    507 {
    508 	struct pciide_channel *cp;
    509 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
    510 	int channel;
    511 	bus_size_t cmdsize, ctlsize;
    512 
    513 	if (pciide_chipen(sc, pa) == 0)
    514 		return;
    515 
    516 	if (interface == 0) {
    517 		ATADEBUG_PRINT(("sis_sata_chip_map interface == 0\n"),
    518 		    DEBUG_PROBE);
    519 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
    520 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
    521 	}
    522 
    523 	aprint_normal("%s: Silicon Integrated Systems 180/96X SATA controller (rev. 0x%02x)\n",
    524 		      sc->sc_wdcdev.sc_atac.atac_dev.dv_xname,
    525 		      PCI_REVISION(pa->pa_class));
    526 
    527 	aprint_normal("%s: bus-master DMA support present",
    528 	    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
    529 	pciide_mapreg_dma(sc, pa);
    530 	aprint_normal("\n");
    531 
    532 	if (sc->sc_dma_ok) {
    533 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA | ATAC_CAP_DMA;
    534 		sc->sc_wdcdev.irqack = pciide_irqack;
    535 	}
    536 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    537 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    538 	sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    539 
    540 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    541 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
    542 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    543 	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
    544 
    545 	wdc_allocate_regs(&sc->sc_wdcdev);
    546 
    547 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    548 	     channel++) {
    549 		cp = &sc->pciide_channels[channel];
    550 		if (pciide_chansetup(sc, channel, interface) == 0)
    551 			continue;
    552 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
    553 		    pciide_pci_intr);
    554 	}
    555 }
    556