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svwsata.c revision 1.7 
      1 /*	$NetBSD: svwsata.c,v 1.7 2006/11/30 19:32:37 hannken 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 1.7 2006/11/30 19:32:37 hannken 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(struct device *, struct cfdata *, void *);
     35 static void svwsata_attach(struct device *, struct device *, 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(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,
     61 	  0,
     62 	  "ServerWorks HT-1000 SATA Controller",
     63 	  svwsata_chip_map
     64 	},
     65 	{ 0,
     66 	  0,
     67 	  NULL,
     68 	  NULL,
     69 	}
     70 };
     71 
     72 static int
     73 svwsata_match(struct device *parent, struct cfdata *match,
     74     void *aux)
     75 {
     76 	struct pci_attach_args *pa = aux;
     77 
     78 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SERVERWORKS) {
     79 		if (pciide_lookup_product(pa->pa_id,
     80 		    pciide_svwsata_products))
     81 			return (2);
     82 	}
     83 	return (0);
     84 }
     85 
     86 static void
     87 svwsata_attach(struct device *parent, struct device *self, void *aux)
     88 {
     89 	struct pci_attach_args *pa = aux;
     90 	struct pciide_softc *sc = (void *)self;
     91 
     92 	pciide_common_attach(sc, pa,
     93 	    pciide_lookup_product(pa->pa_id, pciide_svwsata_products));
     94 }
     95 
     96 static void
     97 svwsata_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
     98 {
     99 	struct pciide_channel *cp;
    100 	pci_intr_handle_t intrhandle;
    101 	pcireg_t interface;
    102 	const char *intrstr;
    103 	int channel;
    104 
    105 	if (pciide_chipen(sc, pa) == 0)
    106 		return;
    107 
    108 	/* The 4-port version has a dummy second function. */
    109 	if (pci_conf_read(sc->sc_pc, sc->sc_tag,
    110 	    PCI_MAPREG_START + 0x14) == 0) {
    111 		aprint_normal("\n");
    112 		return;
    113 	}
    114 
    115 	if (pci_mapreg_map(pa, PCI_MAPREG_START + 0x14,
    116 			   PCI_MAPREG_TYPE_MEM |
    117 			   PCI_MAPREG_MEM_TYPE_32BIT, 0,
    118 			   &sc->sc_ba5_st, &sc->sc_ba5_sh,
    119 			   NULL, NULL) != 0) {
    120 		aprint_error(": unable to map BA5 register space\n");
    121 		return;
    122 	}
    123 
    124 	aprint_normal(": DMA");
    125 	svwsata_mapreg_dma(sc, pa);
    126 	aprint_normal("\n");
    127 
    128 	sc->sc_wdcdev.cap = WDC_CAPABILITY_WIDEREGS;
    129 
    130 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    131 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    132 	if (sc->sc_dma_ok) {
    133 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA | ATAC_CAP_UDMA;
    134 		sc->sc_wdcdev.irqack = pciide_irqack;
    135 		sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    136 		sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    137 	}
    138 
    139 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    140 	sc->sc_wdcdev.sc_atac.atac_nchannels = 4;
    141 	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
    142 
    143 	/* We can use SControl and SStatus to probe for drives. */
    144 	sc->sc_wdcdev.sc_atac.atac_probe = wdc_sataprobe;
    145 
    146 	wdc_allocate_regs(&sc->sc_wdcdev);
    147 
    148 	/* Map and establish the interrupt handler. */
    149 	if(pci_intr_map(pa, &intrhandle) != 0) {
    150 		aprint_error("%s: couldn't map native-PCI interrupt\n",
    151 		    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
    152 		return;
    153 	}
    154 	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
    155 	sc->sc_pci_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_BIO,
    156 	    pciide_pci_intr, sc);
    157 	if (sc->sc_pci_ih != NULL) {
    158 		aprint_normal("%s: using %s for native-PCI interrupt\n",
    159 		    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname,
    160 		    intrstr ? intrstr : "unknown interrupt");
    161 	} else {
    162 		aprint_error("%s: couldn't establish native-PCI interrupt",
    163 		    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
    164 		if (intrstr != NULL)
    165 			aprint_normal(" at %s", intrstr);
    166 		aprint_normal("\n");
    167 		return;
    168 	}
    169 
    170 	interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
    171 	    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
    172 
    173 
    174 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    175 	     channel++) {
    176 		cp = &sc->pciide_channels[channel];
    177 
    178 		if (pciide_chansetup(sc, channel, interface) == 0)
    179 			continue;
    180 		svwsata_mapchan(cp);
    181 	}
    182 }
    183 
    184 static void
    185 svwsata_mapreg_dma(struct pciide_softc *sc, struct pci_attach_args *pa)
    186 {
    187 	struct pciide_channel *pc;
    188 	int chan, reg;
    189 	bus_size_t size;
    190 
    191 	sc->sc_wdcdev.dma_arg = sc;
    192 	sc->sc_wdcdev.dma_init = pciide_dma_init;
    193 	sc->sc_wdcdev.dma_start = pciide_dma_start;
    194 	sc->sc_wdcdev.dma_finish = pciide_dma_finish;
    195 
    196 	if (device_cfdata(&sc->sc_wdcdev.sc_atac.atac_dev)->cf_flags &
    197 	    PCIIDE_OPTIONS_NODMA) {
    198 		aprint_normal(
    199 		    ", but unused (forced off by config file)");
    200 		sc->sc_dma_ok = 0;
    201 		return;
    202 	}
    203 
    204 	/*
    205 	 * Slice off a subregion of BA5 for each of the channel's DMA
    206 	 * registers.
    207 	 */
    208 
    209 	sc->sc_dma_iot = sc->sc_ba5_st;
    210 	for (chan = 0; chan < 4; chan++) {
    211 		pc = &sc->pciide_channels[chan];
    212 		for (reg = 0; reg < IDEDMA_NREGS; reg++) {
    213 			size = 4;
    214 			if (size > (IDEDMA_SCH_OFFSET - reg))
    215 				size = IDEDMA_SCH_OFFSET - reg;
    216 			if (bus_space_subregion(sc->sc_ba5_st,
    217 			    sc->sc_ba5_sh,
    218 			    (chan << 8) + SVWSATA_DMA + reg,
    219 			    size, &pc->dma_iohs[reg]) != 0) {
    220 				sc->sc_dma_ok = 0;
    221 				aprint_normal(", but can't subregion offset "
    222 				    "%lu size %lu",
    223 				    (u_long) (chan << 8) + SVWSATA_DMA + reg,
    224 				    (u_long) size);
    225 				return;
    226 			}
    227 		}
    228 	}
    229 
    230 	/* DMA registers all set up! */
    231 	sc->sc_dmat = pa->pa_dmat;
    232 	sc->sc_dma_ok = 1;
    233 }
    234 
    235 static void
    236 svwsata_mapchan(struct pciide_channel *cp)
    237 {
    238 	struct ata_channel *wdc_cp = &cp->ata_channel;
    239 	struct pciide_softc *sc = CHAN_TO_PCIIDE(wdc_cp);
    240 	struct wdc_regs *wdr = CHAN_TO_WDC_REGS(wdc_cp);
    241 	int i;
    242 
    243 	cp->compat = 0;
    244 	cp->ih = sc->sc_pci_ih;
    245 
    246 	wdr->cmd_iot = sc->sc_ba5_st;
    247 	if (bus_space_subregion(sc->sc_ba5_st, sc->sc_ba5_sh,
    248 		(wdc_cp->ch_channel << 8) + SVWSATA_TF0,
    249 		SVWSATA_TF8 - SVWSATA_TF0, &wdr->cmd_baseioh) != 0) {
    250 		aprint_error("%s: couldn't map %s cmd regs\n",
    251 		       sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name);
    252 		goto bad;
    253 	}
    254 
    255 	wdr->ctl_iot = sc->sc_ba5_st;
    256 	if (bus_space_subregion(sc->sc_ba5_st, sc->sc_ba5_sh,
    257 		(wdc_cp->ch_channel << 8) + SVWSATA_TF8, 4,
    258 		&cp->ctl_baseioh) != 0) {
    259 		aprint_error("%s: couldn't map %s ctl regs\n",
    260 		       sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name);
    261 		goto bad;
    262 	}
    263 	wdr->ctl_ioh = cp->ctl_baseioh;
    264 
    265 	for (i = 0; i < WDC_NREG; i++) {
    266 		if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
    267 					i << 2, i == 0 ? 4 : 1,
    268 					&wdr->cmd_iohs[i]) != 0) {
    269 			aprint_error("%s: couldn't subregion %s channel "
    270 				     "cmd regs\n",
    271 			    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name);
    272 			goto bad;
    273 		}
    274 	}
    275 	wdc_init_shadow_regs(wdc_cp);
    276 	wdr->data32iot = wdr->cmd_iot;
    277 	wdr->data32ioh = wdr->cmd_iohs[0];
    278 
    279 
    280 	wdr->sata_iot = sc->sc_ba5_st;
    281 	wdr->sata_baseioh = sc->sc_ba5_sh;
    282 	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    283 	    (wdc_cp->ch_channel << 8) + SVWSATA_SSTATUS, 1,
    284 	    &wdr->sata_status) != 0) {
    285 		aprint_error("%s: couldn't map channel %d "
    286 		    "sata_status regs\n",
    287 		    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname,
    288 		    wdc_cp->ch_channel);
    289 		goto bad;
    290 	}
    291 	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    292 	    (wdc_cp->ch_channel << 8) + SVWSATA_SERROR, 1,
    293 	    &wdr->sata_error) != 0) {
    294 		aprint_error("%s: couldn't map channel %d "
    295 		    "sata_error regs\n",
    296 		    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname,
    297 		    wdc_cp->ch_channel);
    298 		goto bad;
    299 	}
    300 	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    301 	    (wdc_cp->ch_channel << 8) + SVWSATA_SCONTROL, 1,
    302 	    &wdr->sata_control) != 0) {
    303 		aprint_error("%s: couldn't map channel %d "
    304 		    "sata_control regs\n",
    305 		    sc->sc_wdcdev.sc_atac.atac_dev.dv_xname,
    306 		    wdc_cp->ch_channel);
    307 		goto bad;
    308 	}
    309 
    310 	wdcattach(wdc_cp);
    311 	return;
    312 
    313  bad:
    314 	cp->ata_channel.ch_flags |= ATACH_DISABLED;
    315 }
    316