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siside.c revision 1.27
      1 /*	$NetBSD: siside.c,v 1.27 2011/04/04 20:37:56 dyoung 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  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: siside.c,v 1.27 2011/04/04 20:37:56 dyoung Exp $");
     29 
     30 #include <sys/param.h>
     31 #include <sys/systm.h>
     32 
     33 #include <dev/pci/pcivar.h>
     34 #include <dev/pci/pcidevs.h>
     35 #include <dev/pci/pciidereg.h>
     36 #include <dev/pci/pciidevar.h>
     37 #include <dev/pci/pciide_sis_reg.h>
     38 
     39 static void sis_chip_map(struct pciide_softc *, const struct pci_attach_args *);
     40 static void sis_sata_chip_map(struct pciide_softc *,
     41     const struct pci_attach_args *);
     42 static void sis_setup_channel(struct ata_channel *);
     43 static void sis96x_setup_channel(struct ata_channel *);
     44 
     45 static int  sis_hostbr_match(const struct pci_attach_args *);
     46 static int  sis_south_match(const struct pci_attach_args *);
     47 
     48 static int  siside_match(device_t, cfdata_t, void *);
     49 static void siside_attach(device_t, device_t, void *);
     50 
     51 CFATTACH_DECL_NEW(siside, sizeof(struct pciide_softc),
     52     siside_match, siside_attach, NULL, NULL);
     53 
     54 static const struct pciide_product_desc pciide_sis_products[] =  {
     55 	{ PCI_PRODUCT_SIS_5597_IDE,
     56 	  0,
     57 	  NULL,
     58 	  sis_chip_map,
     59 	},
     60 	{ PCI_PRODUCT_SIS_180_SATA,
     61 	  0,
     62 	  NULL,
     63 	  sis_sata_chip_map,
     64 	},
     65 	{ PCI_PRODUCT_SIS_181_SATA,
     66 	  0,
     67 	  NULL,
     68 	  sis_sata_chip_map,
     69 	},
     70 	{ PCI_PRODUCT_SIS_182_SATA,
     71 	  0,
     72 	  NULL,
     73 	  sis_sata_chip_map,
     74 	},
     75 	{ 0,
     76 	  0,
     77 	  NULL,
     78 	  NULL
     79 	}
     80 };
     81 
     82 static int
     83 siside_match(device_t parent, cfdata_t match, void *aux)
     84 {
     85 	struct pci_attach_args *pa = aux;
     86 
     87 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS) {
     88 		if (pciide_lookup_product(pa->pa_id, pciide_sis_products))
     89 			return (2);
     90 	}
     91 	return (0);
     92 }
     93 
     94 static void
     95 siside_attach(device_t parent, device_t self, void *aux)
     96 {
     97 	struct pci_attach_args *pa = aux;
     98 	struct pciide_softc *sc = device_private(self);
     99 	pci_chipset_tag_t pc = pa->pa_pc;
    100 	pcitag_t tag = pa->pa_tag;
    101 	pcireg_t csr;
    102 
    103 	sc->sc_wdcdev.sc_atac.atac_dev = self;
    104 
    105 	pciide_common_attach(sc, pa,
    106 	    pciide_lookup_product(pa->pa_id, pciide_sis_products));
    107 
    108 	csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
    109 	if (csr & PCI_COMMAND_INTERRUPT_DISABLE) {
    110 		csr &= ~PCI_COMMAND_INTERRUPT_DISABLE;
    111 		pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr);
    112 	}
    113 }
    114 
    115 static struct sis_hostbr_type {
    116 	u_int16_t id;
    117 	u_int8_t rev;
    118 	u_int8_t udma_mode;
    119 	const char *name;
    120 	u_int8_t type;
    121 #define SIS_TYPE_NOUDMA	0
    122 #define SIS_TYPE_66	1
    123 #define SIS_TYPE_100OLD	2
    124 #define SIS_TYPE_100NEW 3
    125 #define SIS_TYPE_133OLD 4
    126 #define SIS_TYPE_133NEW 5
    127 #define SIS_TYPE_SOUTH	6
    128 } sis_hostbr_type[] = {
    129 	/* Most infos here are from sos (at) freebsd.org */
    130 	{PCI_PRODUCT_SIS_530HB, 0x00, 4, "530", SIS_TYPE_66},
    131 #if 0
    132 	/*
    133 	 * controllers associated to a rev 0x2 530 Host to PCI Bridge
    134 	 * have problems with UDMA (info provided by Christos)
    135 	 */
    136 	{PCI_PRODUCT_SIS_530HB, 0x02, 0, "530 (buggy)", SIS_TYPE_NOUDMA},
    137 #endif
    138 	{PCI_PRODUCT_SIS_540HB, 0x00, 4, "540", SIS_TYPE_66},
    139 	{PCI_PRODUCT_SIS_550HB, 0x00, 4, "550", SIS_TYPE_66},
    140 	{PCI_PRODUCT_SIS_620,   0x00, 4, "620", SIS_TYPE_66},
    141 	{PCI_PRODUCT_SIS_630,   0x00, 4, "630", SIS_TYPE_66},
    142 	{PCI_PRODUCT_SIS_630,   0x30, 5, "630S", SIS_TYPE_100NEW},
    143 	{PCI_PRODUCT_SIS_633,   0x00, 5, "633", SIS_TYPE_100NEW},
    144 	{PCI_PRODUCT_SIS_635,   0x00, 5, "635", SIS_TYPE_100NEW},
    145 	{PCI_PRODUCT_SIS_640,   0x00, 4, "640", SIS_TYPE_SOUTH},
    146 	{PCI_PRODUCT_SIS_645,   0x00, 6, "645", SIS_TYPE_SOUTH},
    147 	{PCI_PRODUCT_SIS_646,   0x00, 6, "645DX", SIS_TYPE_SOUTH},
    148 	{PCI_PRODUCT_SIS_648,   0x00, 6, "648", SIS_TYPE_SOUTH},
    149 	{PCI_PRODUCT_SIS_650,   0x00, 6, "650", SIS_TYPE_SOUTH},
    150 	{PCI_PRODUCT_SIS_651,   0x00, 6, "651", SIS_TYPE_SOUTH},
    151 	{PCI_PRODUCT_SIS_652,   0x00, 6, "652", SIS_TYPE_SOUTH},
    152 	{PCI_PRODUCT_SIS_655,   0x00, 6, "655", SIS_TYPE_SOUTH},
    153 	{PCI_PRODUCT_SIS_658,   0x00, 6, "658", SIS_TYPE_SOUTH},
    154 	{PCI_PRODUCT_SIS_661,	0x00, 6, "661", SIS_TYPE_SOUTH},
    155 	{PCI_PRODUCT_SIS_730,   0x00, 5, "730", SIS_TYPE_100OLD},
    156 	{PCI_PRODUCT_SIS_733,   0x00, 5, "733", SIS_TYPE_100NEW},
    157 	{PCI_PRODUCT_SIS_735,   0x00, 5, "735", SIS_TYPE_100NEW},
    158 	{PCI_PRODUCT_SIS_740,   0x00, 5, "740", SIS_TYPE_SOUTH},
    159 	{PCI_PRODUCT_SIS_741,   0x00, 5, "741", SIS_TYPE_SOUTH},
    160 	{PCI_PRODUCT_SIS_745,   0x00, 5, "745", SIS_TYPE_100NEW},
    161 	{PCI_PRODUCT_SIS_746,   0x00, 6, "746", SIS_TYPE_SOUTH},
    162 	{PCI_PRODUCT_SIS_748,   0x00, 6, "748", SIS_TYPE_SOUTH},
    163 	{PCI_PRODUCT_SIS_750,   0x00, 6, "750", SIS_TYPE_SOUTH},
    164 	{PCI_PRODUCT_SIS_751,   0x00, 6, "751", SIS_TYPE_SOUTH},
    165 	{PCI_PRODUCT_SIS_752,   0x00, 6, "752", SIS_TYPE_SOUTH},
    166 	{PCI_PRODUCT_SIS_755,   0x00, 6, "755", SIS_TYPE_SOUTH},
    167 	{PCI_PRODUCT_SIS_760,	0x00, 6, "760", SIS_TYPE_133NEW},
    168 	/*
    169 	 * From sos (at) freebsd.org: the 0x961 ID will never be found in real world
    170 	 * {PCI_PRODUCT_SIS_961,   0x00, 6, "961", SIS_TYPE_133NEW},
    171 	 */
    172 	{PCI_PRODUCT_SIS_962,   0x00, 6, "962", SIS_TYPE_133NEW},
    173 	{PCI_PRODUCT_SIS_963,   0x00, 6, "963", SIS_TYPE_133NEW},
    174 	{PCI_PRODUCT_SIS_964,   0x00, 6, "964", SIS_TYPE_133NEW},
    175 	{PCI_PRODUCT_SIS_965,   0x00, 6, "965", SIS_TYPE_133NEW},
    176 };
    177 
    178 static struct sis_hostbr_type *sis_hostbr_type_match;
    179 
    180 static int
    181 sis_hostbr_match(const struct pci_attach_args *pa)
    182 {
    183 	int i;
    184 	pcireg_t id, masqid, reg;
    185 
    186 	id = pa->pa_id;
    187 
    188 	if (PCI_VENDOR(id) != PCI_VENDOR_SIS)
    189 		return 0;
    190 	if (PCI_PRODUCT(id) == PCI_PRODUCT_SIS_85C503) {
    191 		reg = pci_conf_read(pa->pa_pc, pa->pa_tag, SIS96x_DETECT);
    192 		pci_conf_write(pa->pa_pc, pa->pa_tag, SIS96x_DETECT,
    193 		    reg | SIS96x_DETECT_MASQ);
    194 		masqid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
    195 		if (((PCI_PRODUCT(masqid) & 0xfff0) != 0x0960)
    196 		    && (PCI_PRODUCT(masqid) != 0x0018)) {
    197 			pci_conf_write(pa->pa_pc, pa->pa_tag, SIS96x_DETECT,
    198 			    reg);
    199 		} else {
    200 			id = masqid;
    201 		}
    202 	}
    203 
    204 	sis_hostbr_type_match = NULL;
    205 	for (i = 0; i < __arraycount(sis_hostbr_type); i++) {
    206 		if (PCI_PRODUCT(id) == sis_hostbr_type[i].id &&
    207 		    PCI_REVISION(pa->pa_class) >= sis_hostbr_type[i].rev)
    208 			sis_hostbr_type_match = &sis_hostbr_type[i];
    209 	}
    210 	return (sis_hostbr_type_match != NULL);
    211 }
    212 
    213 static int
    214 sis_south_match(const struct pci_attach_args *pa)
    215 {
    216 
    217 	return (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS &&
    218 		PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503 &&
    219 		PCI_REVISION(pa->pa_class) >= 0x10);
    220 }
    221 
    222 static void
    223 sis_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa)
    224 {
    225 	struct pciide_channel *cp;
    226 	int channel;
    227 	u_int8_t sis_ctr0 = pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_CTRL0);
    228 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
    229 	pcireg_t rev = PCI_REVISION(pa->pa_class);
    230 
    231 	if (pciide_chipen(sc, pa) == 0)
    232 		return;
    233 
    234 	aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    235 	    "Silicon Integrated Systems ");
    236 	pci_find_device(NULL, sis_hostbr_match);
    237 	if (sis_hostbr_type_match) {
    238 		if (sis_hostbr_type_match->type == SIS_TYPE_SOUTH) {
    239 			pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_57,
    240 			    pciide_pci_read(sc->sc_pc, sc->sc_tag,
    241 			    SIS_REG_57) & 0x7f);
    242 			if (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag,
    243 			    PCI_ID_REG)) == SIS_PRODUCT_5518) {
    244 				aprint_normal("96X UDMA%d",
    245 				    sis_hostbr_type_match->udma_mode);
    246 				sc->sis_type = SIS_TYPE_133NEW;
    247 				sc->sc_wdcdev.sc_atac.atac_udma_cap =
    248 			    	    sis_hostbr_type_match->udma_mode;
    249 			} else {
    250 				if (pci_find_device(NULL, sis_south_match)) {
    251 					sc->sis_type = SIS_TYPE_133OLD;
    252 					sc->sc_wdcdev.sc_atac.atac_udma_cap =
    253 				    	    sis_hostbr_type_match->udma_mode;
    254 				} else {
    255 					sc->sis_type = SIS_TYPE_100NEW;
    256 					sc->sc_wdcdev.sc_atac.atac_udma_cap =
    257 					    sis_hostbr_type_match->udma_mode;
    258 				}
    259 			}
    260 		} else {
    261 			sc->sis_type = sis_hostbr_type_match->type;
    262 			sc->sc_wdcdev.sc_atac.atac_udma_cap =
    263 		    	    sis_hostbr_type_match->udma_mode;
    264 		}
    265 		aprint_normal(sis_hostbr_type_match->name);
    266 	} else {
    267 		aprint_normal("5597/5598");
    268 		if (rev >= 0xd0) {
    269 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
    270 			sc->sis_type = SIS_TYPE_66;
    271 		} else {
    272 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 0;
    273 			sc->sis_type = SIS_TYPE_NOUDMA;
    274 		}
    275 	}
    276 	aprint_normal(" IDE controller (rev. 0x%02x)\n",
    277 	    PCI_REVISION(pa->pa_class));
    278 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    279 	    "bus-master DMA support present");
    280 	pciide_mapreg_dma(sc, pa);
    281 	aprint_verbose("\n");
    282 
    283 	sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    284 	if (sc->sc_dma_ok) {
    285 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
    286 		sc->sc_wdcdev.irqack = pciide_irqack;
    287 		if (sc->sis_type >= SIS_TYPE_66)
    288 			sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA;
    289 	}
    290 
    291 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    292 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    293 
    294 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    295 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
    296 	switch(sc->sis_type) {
    297 	case SIS_TYPE_NOUDMA:
    298 	case SIS_TYPE_66:
    299 	case SIS_TYPE_100OLD:
    300 		sc->sc_wdcdev.sc_atac.atac_set_modes = sis_setup_channel;
    301 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_MISC,
    302 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_MISC) |
    303 		    SIS_MISC_TIM_SEL | SIS_MISC_FIFO_SIZE | SIS_MISC_GTC);
    304 		break;
    305 	case SIS_TYPE_100NEW:
    306 	case SIS_TYPE_133OLD:
    307 		sc->sc_wdcdev.sc_atac.atac_set_modes = sis_setup_channel;
    308 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_49,
    309 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_49) | 0x01);
    310 		break;
    311 	case SIS_TYPE_133NEW:
    312 		sc->sc_wdcdev.sc_atac.atac_set_modes = sis96x_setup_channel;
    313 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_50,
    314 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_50) & 0xf7);
    315 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_52,
    316 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_52) & 0xf7);
    317 		break;
    318 	}
    319 
    320 	wdc_allocate_regs(&sc->sc_wdcdev);
    321 
    322 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    323 	     channel++) {
    324 		cp = &sc->pciide_channels[channel];
    325 		if (pciide_chansetup(sc, channel, interface) == 0)
    326 			continue;
    327 		if ((channel == 0 && (sis_ctr0 & SIS_CTRL0_CHAN0_EN) == 0) ||
    328 		    (channel == 1 && (sis_ctr0 & SIS_CTRL0_CHAN1_EN) == 0)) {
    329 			aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    330 			    "%s channel ignored (disabled)\n", cp->name);
    331 			cp->ata_channel.ch_flags |= ATACH_DISABLED;
    332 			continue;
    333 		}
    334 		pciide_mapchan(pa, cp, interface, pciide_pci_intr);
    335 	}
    336 }
    337 
    338 static void
    339 sis96x_setup_channel(struct ata_channel *chp)
    340 {
    341 	struct ata_drive_datas *drvp;
    342 	int drive, s;
    343 	u_int32_t sis_tim;
    344 	u_int32_t idedma_ctl;
    345 	int regtim;
    346 	struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
    347 	struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
    348 
    349 	sis_tim = 0;
    350 	idedma_ctl = 0;
    351 	/* setup DMA if needed */
    352 	pciide_channel_dma_setup(cp);
    353 
    354 	for (drive = 0; drive < 2; drive++) {
    355 		regtim = SIS_TIM133(
    356 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_57),
    357 		    chp->ch_channel, drive);
    358 		drvp = &chp->ch_drive[drive];
    359 		/* If no drive, skip */
    360 		if ((drvp->drive_flags & DRIVE) == 0)
    361 			continue;
    362 		/* add timing values, setup DMA if needed */
    363 		if (drvp->drive_flags & DRIVE_UDMA) {
    364 			/* use Ultra/DMA */
    365 			s = splbio();
    366 			drvp->drive_flags &= ~DRIVE_DMA;
    367 			splx(s);
    368 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
    369 			    SIS96x_REG_CBL(chp->ch_channel)) & SIS96x_REG_CBL_33) {
    370 				if (drvp->UDMA_mode > 2)
    371 					drvp->UDMA_mode = 2;
    372 			}
    373 			sis_tim |= sis_udma133new_tim[drvp->UDMA_mode];
    374 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
    375 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
    376 		} else if (drvp->drive_flags & DRIVE_DMA) {
    377 			/*
    378 			 * use Multiword DMA
    379 			 * Timings will be used for both PIO and DMA,
    380 			 * so adjust DMA mode if needed
    381 			 */
    382 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
    383 				drvp->PIO_mode = drvp->DMA_mode + 2;
    384 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
    385 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
    386 				    drvp->PIO_mode - 2 : 0;
    387 			sis_tim |= sis_dma133new_tim[drvp->DMA_mode];
    388 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
    389 		} else {
    390 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
    391 		}
    392 		ATADEBUG_PRINT(("sis96x_setup_channel: new timings reg for "
    393 		    "channel %d drive %d: 0x%x (reg 0x%x)\n",
    394 		    chp->ch_channel, drive, sis_tim, regtim), DEBUG_PROBE);
    395 		pci_conf_write(sc->sc_pc, sc->sc_tag, regtim, sis_tim);
    396 	}
    397 	if (idedma_ctl != 0) {
    398 		/* Add software bits in status register */
    399 		bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
    400 		    idedma_ctl);
    401 	}
    402 }
    403 
    404 static void
    405 sis_setup_channel(struct ata_channel *chp)
    406 {
    407 	struct ata_drive_datas *drvp;
    408 	int drive, s;
    409 	u_int32_t sis_tim;
    410 	u_int32_t idedma_ctl;
    411 	struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
    412 	struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
    413 
    414 	ATADEBUG_PRINT(("sis_setup_channel: old timings reg for "
    415 	    "channel %d 0x%x\n", chp->ch_channel,
    416 	    pci_conf_read(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->ch_channel))),
    417 	    DEBUG_PROBE);
    418 	sis_tim = 0;
    419 	idedma_ctl = 0;
    420 	/* setup DMA if needed */
    421 	pciide_channel_dma_setup(cp);
    422 
    423 	for (drive = 0; drive < 2; drive++) {
    424 		drvp = &chp->ch_drive[drive];
    425 		/* If no drive, skip */
    426 		if ((drvp->drive_flags & DRIVE) == 0)
    427 			continue;
    428 		/* add timing values, setup DMA if needed */
    429 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
    430 		    (drvp->drive_flags & DRIVE_UDMA) == 0)
    431 			goto pio;
    432 
    433 		if (drvp->drive_flags & DRIVE_UDMA) {
    434 			/* use Ultra/DMA */
    435 			s = splbio();
    436 			drvp->drive_flags &= ~DRIVE_DMA;
    437 			splx(s);
    438 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
    439 			    SIS_REG_CBL) & SIS_REG_CBL_33(chp->ch_channel)) {
    440 				if (drvp->UDMA_mode > 2)
    441 					drvp->UDMA_mode = 2;
    442 			}
    443 			switch (sc->sis_type) {
    444 			case SIS_TYPE_66:
    445 			case SIS_TYPE_100OLD:
    446 				sis_tim |= sis_udma66_tim[drvp->UDMA_mode] <<
    447 				    SIS_TIM66_UDMA_TIME_OFF(drive);
    448 				break;
    449 			case SIS_TYPE_100NEW:
    450 				sis_tim |=
    451 				    sis_udma100new_tim[drvp->UDMA_mode] <<
    452 				    SIS_TIM100_UDMA_TIME_OFF(drive);
    453 			case SIS_TYPE_133OLD:
    454 				sis_tim |=
    455 				    sis_udma133old_tim[drvp->UDMA_mode] <<
    456 				    SIS_TIM100_UDMA_TIME_OFF(drive);
    457 				break;
    458 			default:
    459 				aprint_error("unknown SiS IDE type %d\n",
    460 				    sc->sis_type);
    461 			}
    462 		} else {
    463 			/*
    464 			 * use Multiword DMA
    465 			 * Timings will be used for both PIO and DMA,
    466 			 * so adjust DMA mode if needed
    467 			 */
    468 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
    469 				drvp->PIO_mode = drvp->DMA_mode + 2;
    470 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
    471 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
    472 				    drvp->PIO_mode - 2 : 0;
    473 			if (drvp->DMA_mode == 0)
    474 				drvp->PIO_mode = 0;
    475 		}
    476 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
    477 pio:		switch (sc->sis_type) {
    478 		case SIS_TYPE_NOUDMA:
    479 		case SIS_TYPE_66:
    480 		case SIS_TYPE_100OLD:
    481 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
    482 			    SIS_TIM66_ACT_OFF(drive);
    483 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
    484 			    SIS_TIM66_REC_OFF(drive);
    485 			break;
    486 		case SIS_TYPE_100NEW:
    487 		case SIS_TYPE_133OLD:
    488 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
    489 			    SIS_TIM100_ACT_OFF(drive);
    490 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
    491 			    SIS_TIM100_REC_OFF(drive);
    492 			break;
    493 		default:
    494 			aprint_error("unknown SiS IDE type %d\n",
    495 			    sc->sis_type);
    496 		}
    497 	}
    498 	ATADEBUG_PRINT(("sis_setup_channel: new timings reg for "
    499 	    "channel %d 0x%x\n", chp->ch_channel, sis_tim), DEBUG_PROBE);
    500 	pci_conf_write(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->ch_channel),
    501 		       sis_tim);
    502 	if (idedma_ctl != 0) {
    503 		/* Add software bits in status register */
    504 		bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
    505 		    idedma_ctl);
    506 	}
    507 }
    508 
    509 static void
    510 sis_sata_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa)
    511 {
    512 	struct pciide_channel *cp;
    513 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
    514 	int channel;
    515 
    516 	if (pciide_chipen(sc, pa) == 0)
    517 		return;
    518 
    519 	if (interface == 0) {
    520 		ATADEBUG_PRINT(("sis_sata_chip_map interface == 0\n"),
    521 		    DEBUG_PROBE);
    522 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
    523 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
    524 	}
    525 
    526 	aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    527 	    "Silicon Integrated Systems 180/96X SATA controller "
    528 	    "(rev. 0x%02x)\n", PCI_REVISION(pa->pa_class));
    529 
    530 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    531 	    "bus-master DMA support present");
    532 	pciide_mapreg_dma(sc, pa);
    533 	aprint_verbose("\n");
    534 
    535 	if (sc->sc_dma_ok) {
    536 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA | ATAC_CAP_DMA;
    537 		sc->sc_wdcdev.irqack = pciide_irqack;
    538 	}
    539 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    540 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    541 	sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    542 
    543 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    544 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
    545 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    546 	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
    547 
    548 	wdc_allocate_regs(&sc->sc_wdcdev);
    549 
    550 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    551 	     channel++) {
    552 		cp = &sc->pciide_channels[channel];
    553 		if (pciide_chansetup(sc, channel, interface) == 0)
    554 			continue;
    555 		pciide_mapchan(pa, cp, interface, pciide_pci_intr);
    556 	}
    557 }
    558