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svwsata.c revision 1.10 
      1 /*	$NetBSD: svwsata.c,v 1.10 2008/03/18 20:46:37 cube Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2005 Mark Kettenis
      5  *
      6  * Permission to use, copy, modify, and distribute this software for any
      7  * purpose with or without fee is hereby granted, provided that the above
      8  * copyright notice and this permission notice appear in all copies.
      9  *
     10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     17  */
     18 
     19 #include <sys/cdefs.h>
     20 __KERNEL_RCSID(0, "$NetBSD: svwsata.c,v 1.10 2008/03/18 20:46:37 cube Exp $");
     21 
     22 #include <sys/param.h>
     23 #include <sys/systm.h>
     24 
     25 #include <dev/ata/atareg.h>
     26 #include <dev/ata/satareg.h>
     27 #include <dev/ata/satavar.h>
     28 #include <dev/pci/pcivar.h>
     29 #include <dev/pci/pcidevs.h>
     30 #include <dev/pci/pciidereg.h>
     31 #include <dev/pci/pciidevar.h>
     32 #include <dev/pci/pciide_svwsata_reg.h>
     33 
     34 static int  svwsata_match(device_t, cfdata_t, void *);
     35 static void svwsata_attach(device_t, device_t, void *);
     36 
     37 static void svwsata_chip_map(struct pciide_softc *, struct pci_attach_args *);
     38 static void svwsata_mapreg_dma(struct pciide_softc *, struct pci_attach_args *);
     39 static void svwsata_mapchan(struct pciide_channel *);
     40 
     41 CFATTACH_DECL_NEW(svwsata, sizeof(struct pciide_softc),
     42     svwsata_match, svwsata_attach, NULL, NULL);
     43 
     44 static const struct pciide_product_desc pciide_svwsata_products[] =  {
     45 	{ PCI_PRODUCT_SERVERWORKS_K2_SATA,
     46 	  0,
     47 	  "ServerWorks K2 SATA Controller",
     48 	  svwsata_chip_map
     49 	},
     50 	{ PCI_PRODUCT_SERVERWORKS_FRODO4_SATA,
     51 	  0,
     52 	  "ServerWorks Frodo4 SATA Controller",
     53 	  svwsata_chip_map
     54 	},
     55 	{ PCI_PRODUCT_SERVERWORKS_FRODO8_SATA,
     56 	  0,
     57 	  "ServerWorks Frodo8 SATA Controller",
     58 	  svwsata_chip_map
     59 	},
     60 	{ PCI_PRODUCT_SERVERWORKS_HT1000_SATA_1,
     61 	  0,
     62 	  "ServerWorks HT-1000 SATA Controller",
     63 	  svwsata_chip_map
     64 	},
     65 	{ PCI_PRODUCT_SERVERWORKS_HT1000_SATA_2,
     66 	  0,
     67 	  "ServerWorks HT-1000 SATA Controller",
     68 	  svwsata_chip_map
     69 	},
     70 	{ 0,
     71 	  0,
     72 	  NULL,
     73 	  NULL,
     74 	}
     75 };
     76 
     77 static int
     78 svwsata_match(device_t parent, cfdata_t match, void *aux)
     79 {
     80 	struct pci_attach_args *pa = aux;
     81 
     82 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SERVERWORKS) {
     83 		if (pciide_lookup_product(pa->pa_id,
     84 		    pciide_svwsata_products))
     85 			return (2);
     86 	}
     87 	return (0);
     88 }
     89 
     90 static void
     91 svwsata_attach(device_t parent, device_t self, void *aux)
     92 {
     93 	struct pci_attach_args *pa = aux;
     94 	struct pciide_softc *sc = device_private(self);
     95 
     96 	sc->sc_wdcdev.sc_atac.atac_dev = self;
     97 
     98 	pciide_common_attach(sc, pa,
     99 	    pciide_lookup_product(pa->pa_id, pciide_svwsata_products));
    100 }
    101 
    102 static void
    103 svwsata_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
    104 {
    105 	struct pciide_channel *cp;
    106 	pci_intr_handle_t intrhandle;
    107 	pcireg_t interface;
    108 	const char *intrstr;
    109 	int channel;
    110 
    111 	if (pciide_chipen(sc, pa) == 0)
    112 		return;
    113 
    114 	/* The 4-port version has a dummy second function. */
    115 	if (pci_conf_read(sc->sc_pc, sc->sc_tag,
    116 	    PCI_MAPREG_START + 0x14) == 0) {
    117 		aprint_normal("\n");
    118 		return;
    119 	}
    120 
    121 	if (pci_mapreg_map(pa, PCI_MAPREG_START + 0x14,
    122 			   PCI_MAPREG_TYPE_MEM |
    123 			   PCI_MAPREG_MEM_TYPE_32BIT, 0,
    124 			   &sc->sc_ba5_st, &sc->sc_ba5_sh,
    125 			   NULL, NULL) != 0) {
    126 		aprint_error(": unable to map BA5 register space\n");
    127 		return;
    128 	}
    129 
    130 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    131 	    "bus-master DMA support present");
    132 	svwsata_mapreg_dma(sc, pa);
    133 	aprint_verbose("\n");
    134 
    135 	sc->sc_wdcdev.cap = WDC_CAPABILITY_WIDEREGS;
    136 
    137 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    138 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    139 	if (sc->sc_dma_ok) {
    140 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA | ATAC_CAP_UDMA;
    141 		sc->sc_wdcdev.irqack = pciide_irqack;
    142 		sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    143 		sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    144 	}
    145 
    146 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    147 	sc->sc_wdcdev.sc_atac.atac_nchannels = 4;
    148 	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
    149 
    150 	/* We can use SControl and SStatus to probe for drives. */
    151 	sc->sc_wdcdev.sc_atac.atac_probe = wdc_sataprobe;
    152 
    153 	wdc_allocate_regs(&sc->sc_wdcdev);
    154 
    155 	/* Map and establish the interrupt handler. */
    156 	if(pci_intr_map(pa, &intrhandle) != 0) {
    157 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    158 		    "couldn't map native-PCI interrupt\n");
    159 		return;
    160 	}
    161 	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
    162 	sc->sc_pci_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_BIO,
    163 	    pciide_pci_intr, sc);
    164 	if (sc->sc_pci_ih != NULL) {
    165 		aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    166 		    "using %s for native-PCI interrupt\n",
    167 		    intrstr ? intrstr : "unknown interrupt");
    168 	} else {
    169 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    170 		    "couldn't establish native-PCI interrupt");
    171 		if (intrstr != NULL)
    172 			aprint_normal(" at %s", intrstr);
    173 		aprint_normal("\n");
    174 		return;
    175 	}
    176 
    177 	interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
    178 	    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
    179 
    180 
    181 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    182 	     channel++) {
    183 		cp = &sc->pciide_channels[channel];
    184 
    185 		if (pciide_chansetup(sc, channel, interface) == 0)
    186 			continue;
    187 		svwsata_mapchan(cp);
    188 	}
    189 }
    190 
    191 static void
    192 svwsata_mapreg_dma(struct pciide_softc *sc, struct pci_attach_args *pa)
    193 {
    194 	struct pciide_channel *pc;
    195 	int chan, reg;
    196 	bus_size_t size;
    197 
    198 	sc->sc_wdcdev.dma_arg = sc;
    199 	sc->sc_wdcdev.dma_init = pciide_dma_init;
    200 	sc->sc_wdcdev.dma_start = pciide_dma_start;
    201 	sc->sc_wdcdev.dma_finish = pciide_dma_finish;
    202 
    203 	if (device_cfdata(sc->sc_wdcdev.sc_atac.atac_dev)->cf_flags &
    204 	    PCIIDE_OPTIONS_NODMA) {
    205 		aprint_normal(
    206 		    ", but unused (forced off by config file)");
    207 		sc->sc_dma_ok = 0;
    208 		return;
    209 	}
    210 
    211 	/*
    212 	 * Slice off a subregion of BA5 for each of the channel's DMA
    213 	 * registers.
    214 	 */
    215 
    216 	sc->sc_dma_iot = sc->sc_ba5_st;
    217 	for (chan = 0; chan < 4; chan++) {
    218 		pc = &sc->pciide_channels[chan];
    219 		for (reg = 0; reg < IDEDMA_NREGS; reg++) {
    220 			size = 4;
    221 			if (size > (IDEDMA_SCH_OFFSET - reg))
    222 				size = IDEDMA_SCH_OFFSET - reg;
    223 			if (bus_space_subregion(sc->sc_ba5_st,
    224 			    sc->sc_ba5_sh,
    225 			    (chan << 8) + SVWSATA_DMA + reg,
    226 			    size, &pc->dma_iohs[reg]) != 0) {
    227 				sc->sc_dma_ok = 0;
    228 				aprint_normal(", but can't subregion offset "
    229 				    "%lu size %lu",
    230 				    (u_long) (chan << 8) + SVWSATA_DMA + reg,
    231 				    (u_long) size);
    232 				return;
    233 			}
    234 		}
    235 	}
    236 
    237 	/* DMA registers all set up! */
    238 	sc->sc_dmat = pa->pa_dmat;
    239 	sc->sc_dma_ok = 1;
    240 }
    241 
    242 static void
    243 svwsata_mapchan(struct pciide_channel *cp)
    244 {
    245 	struct ata_channel *wdc_cp = &cp->ata_channel;
    246 	struct pciide_softc *sc = CHAN_TO_PCIIDE(wdc_cp);
    247 	struct wdc_regs *wdr = CHAN_TO_WDC_REGS(wdc_cp);
    248 	int i;
    249 
    250 	cp->compat = 0;
    251 	cp->ih = sc->sc_pci_ih;
    252 
    253 	wdr->cmd_iot = sc->sc_ba5_st;
    254 	if (bus_space_subregion(sc->sc_ba5_st, sc->sc_ba5_sh,
    255 		(wdc_cp->ch_channel << 8) + SVWSATA_TF0,
    256 		SVWSATA_TF8 - SVWSATA_TF0, &wdr->cmd_baseioh) != 0) {
    257 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    258 		    "couldn't map %s cmd regs\n", cp->name);
    259 		goto bad;
    260 	}
    261 
    262 	wdr->ctl_iot = sc->sc_ba5_st;
    263 	if (bus_space_subregion(sc->sc_ba5_st, sc->sc_ba5_sh,
    264 		(wdc_cp->ch_channel << 8) + SVWSATA_TF8, 4,
    265 		&cp->ctl_baseioh) != 0) {
    266 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    267 		    "couldn't map %s ctl regs\n", cp->name);
    268 		goto bad;
    269 	}
    270 	wdr->ctl_ioh = cp->ctl_baseioh;
    271 
    272 	for (i = 0; i < WDC_NREG; i++) {
    273 		if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
    274 					i << 2, i == 0 ? 4 : 1,
    275 					&wdr->cmd_iohs[i]) != 0) {
    276 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    277 			    "couldn't subregion %s channel cmd regs\n",
    278 			    cp->name);
    279 			goto bad;
    280 		}
    281 	}
    282 	wdc_init_shadow_regs(wdc_cp);
    283 	wdr->data32iot = wdr->cmd_iot;
    284 	wdr->data32ioh = wdr->cmd_iohs[0];
    285 
    286 
    287 	wdr->sata_iot = sc->sc_ba5_st;
    288 	wdr->sata_baseioh = sc->sc_ba5_sh;
    289 	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    290 	    (wdc_cp->ch_channel << 8) + SVWSATA_SSTATUS, 1,
    291 	    &wdr->sata_status) != 0) {
    292 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    293 		    "couldn't map channel %d sata_status regs\n",
    294 		    wdc_cp->ch_channel);
    295 		goto bad;
    296 	}
    297 	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    298 	    (wdc_cp->ch_channel << 8) + SVWSATA_SERROR, 1,
    299 	    &wdr->sata_error) != 0) {
    300 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    301 		   "couldn't map channel %d sata_error regs\n",
    302 		    wdc_cp->ch_channel);
    303 		goto bad;
    304 	}
    305 	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    306 	    (wdc_cp->ch_channel << 8) + SVWSATA_SCONTROL, 1,
    307 	    &wdr->sata_control) != 0) {
    308 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    309 		    "couldn't map channel %d sata_control regs\n",
    310 		    wdc_cp->ch_channel);
    311 		goto bad;
    312 	}
    313 
    314 	wdcattach(wdc_cp);
    315 	return;
    316 
    317  bad:
    318 	cp->ata_channel.ch_flags |= ATACH_DISABLED;
    319 }
    320