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ahc_cardbus.c revision 1.12
      1 /*	$NetBSD: ahc_cardbus.c,v 1.12 2003/04/20 16:52:40 fvdl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the NetBSD
     22  *	Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 /*
     41  * CardBus front-end for the Adaptec AIC-7xxx family of SCSI controllers.
     42  *
     43  * TODO:
     44  *	- power management
     45  */
     46 
     47 #include <sys/cdefs.h>
     48 __KERNEL_RCSID(0, "$NetBSD: ahc_cardbus.c,v 1.12 2003/04/20 16:52:40 fvdl Exp $");
     49 
     50 #include <sys/param.h>
     51 #include <sys/systm.h>
     52 #include <sys/malloc.h>
     53 #include <sys/kernel.h>
     54 #include <sys/queue.h>
     55 #include <sys/device.h>
     56 
     57 #include <machine/bus.h>
     58 #include <machine/intr.h>
     59 
     60 #include <dev/scsipi/scsi_all.h>
     61 #include <dev/scsipi/scsipi_all.h>
     62 #include <dev/scsipi/scsiconf.h>
     63 
     64 #include <dev/pci/pcireg.h>
     65 
     66 #include <dev/cardbus/cardbusvar.h>
     67 #include <dev/cardbus/cardbusdevs.h>
     68 
     69 #include <dev/ic/aic7xxx_osm.h>
     70 #include <dev/ic/aic7xxx_inline.h>
     71 
     72 
     73 #define	AHC_CARDBUS_IOBA	0x10
     74 #define	AHC_CARDBUS_MMBA	0x14
     75 
     76 struct ahc_cardbus_softc {
     77 	struct ahc_softc sc_ahc;	/* real AHC */
     78 
     79 	/* CardBus-specific goo. */
     80 	cardbus_devfunc_t sc_ct;	/* our CardBus devfuncs */
     81 	int	sc_intrline;		/* our interrupt line */
     82 	cardbustag_t sc_tag;
     83 
     84 	int	sc_cbenable;		/* what CardBus access type to enable */
     85 	int	sc_csr;			/* CSR bits */
     86 	bus_size_t sc_size;
     87 };
     88 
     89 int	ahc_cardbus_match __P((struct device *, struct cfdata *, void *));
     90 void	ahc_cardbus_attach __P((struct device *, struct device *, void *));
     91 int	ahc_cardbus_detach __P((struct device *, int));
     92 int	ahc_activate(struct device *self, enum devact act);
     93 
     94 CFATTACH_DECL(ahc_cardbus, sizeof(struct ahc_cardbus_softc),
     95     ahc_cardbus_match, ahc_cardbus_attach, ahc_cardbus_detach, ahc_activate);
     96 
     97 int
     98 ahc_cardbus_match(parent, match, aux)
     99 	struct device *parent;
    100 	struct cfdata *match;
    101 	void *aux;
    102 {
    103 	struct cardbus_attach_args *ca = aux;
    104 
    105 	if (CARDBUS_VENDOR(ca->ca_id) == CARDBUS_VENDOR_ADP &&
    106 	    CARDBUS_PRODUCT(ca->ca_id) == CARDBUS_PRODUCT_ADP_1480)
    107 		return (1);
    108 
    109 	return (0);
    110 }
    111 
    112 void
    113 ahc_cardbus_attach(parent, self, aux)
    114 	struct device *parent, *self;
    115 	void *aux;
    116 {
    117 	struct cardbus_attach_args *ca = aux;
    118 	struct ahc_cardbus_softc *csc = (void *) self;
    119 	struct ahc_softc *ahc = &csc->sc_ahc;
    120 	cardbus_devfunc_t ct = ca->ca_ct;
    121 	cardbus_chipset_tag_t cc = ct->ct_cc;
    122 	cardbus_function_tag_t cf = ct->ct_cf;
    123 	bus_space_tag_t bst;
    124 	bus_space_handle_t bsh;
    125 	pcireg_t reg;
    126 	u_int sxfrctl1 = 0;
    127 	u_char sblkctl;
    128 
    129 
    130 	csc->sc_ct = ct;
    131 	csc->sc_tag = ca->ca_tag;
    132 	csc->sc_intrline = ca->ca_intrline;
    133 
    134 	printf(": Adaptec ADP-1480 SCSI\n");
    135 
    136 	/*
    137 	 * Map the device.
    138 	 */
    139 	csc->sc_csr = PCI_COMMAND_MASTER_ENABLE;
    140 	if (Cardbus_mapreg_map(csc->sc_ct, AHC_CARDBUS_MMBA,
    141 	    PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
    142 	    &bst, &bsh, NULL, &csc->sc_size) == 0) {
    143 		csc->sc_cbenable = CARDBUS_MEM_ENABLE;
    144 		csc->sc_csr |= PCI_COMMAND_MEM_ENABLE;
    145 	} else if (Cardbus_mapreg_map(csc->sc_ct, AHC_CARDBUS_IOBA,
    146 	    PCI_MAPREG_TYPE_IO, 0, &bst, &bsh, NULL, &csc->sc_size) == 0) {
    147 		csc->sc_cbenable = CARDBUS_IO_ENABLE;
    148 		csc->sc_csr |= PCI_COMMAND_IO_ENABLE;
    149 	} else {
    150 		printf("%s: unable to map device registers\n",
    151 		    ahc_name(ahc));
    152 		return;
    153 	}
    154 
    155 	/* Make sure the right access type is on the CardBus bridge. */
    156 	(*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cbenable);
    157 	(*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
    158 
    159 	/* Enable the appropriate bits in the PCI CSR. */
    160 	reg = cardbus_conf_read(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG);
    161 	reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE);
    162 	reg |= csc->sc_csr;
    163 	cardbus_conf_write(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG, reg);
    164 
    165 	/*
    166 	 * Make sure the latency timer is set to some reasonable
    167 	 * value.
    168 	 */
    169 	reg = cardbus_conf_read(cc, cf, ca->ca_tag, PCI_BHLC_REG);
    170 	if (PCI_LATTIMER(reg) < 0x20) {
    171 		reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
    172 		reg |= (0x20 << PCI_LATTIMER_SHIFT);
    173 		cardbus_conf_write(cc, cf, ca->ca_tag, PCI_BHLC_REG, reg);
    174 	}
    175 
    176 	ahc_set_name(ahc, ahc->sc_dev.dv_xname);
    177 
    178 	ahc->parent_dmat = ca->ca_dmat;
    179 	ahc->tag = bst;
    180 	ahc->bsh = bsh;
    181 
    182 	/*
    183 	 * ADP-1480 is always an AIC-7860.
    184 	 */
    185 	ahc->chip = AHC_AIC7860 | AHC_PCI;
    186 	ahc->features = AHC_AIC7860_FE|AHC_REMOVABLE;
    187 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
    188 	if (PCI_REVISION(ca->ca_class) >= 1)
    189 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
    190 
    191 	if (ahc_softc_init(ahc) != 0)
    192 		return;
    193 
    194 	/*
    195 	 * On all CardBus adapters, we allow SCB paging.
    196 	 */
    197 	ahc->flags = AHC_PAGESCBS;
    198 
    199 	ahc->channel = 'A';
    200 
    201 	ahc_intr_enable(ahc, FALSE);
    202 
    203 	ahc_reset(ahc);
    204 
    205 	/*
    206 	 * Establish the interrupt.
    207 	 */
    208 	ahc->ih = cardbus_intr_establish(cc, cf, ca->ca_intrline, IPL_BIO,
    209 	    ahc_intr, ahc);
    210 	if (ahc->ih == NULL) {
    211 		printf("%s: unable to establish interrupt at %d\n",
    212 		    ahc_name(ahc), ca->ca_intrline);
    213 		return;
    214 	}
    215 	printf("%s: interrupting at %d\n", ahc_name(ahc), ca->ca_intrline);
    216 
    217 	ahc_check_extport(ahc, &sxfrctl1);
    218 	/*
    219 	 * Take the LED out of diagnostic mode.
    220 	 */
    221 	sblkctl = ahc_inb(ahc, SBLKCTL);
    222 	ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
    223 
    224 	/*
    225 	 * I don't know where this is set in the SEEPROM or by the
    226 	 * BIOS, so we default to 100%.
    227 	 */
    228 	ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
    229 
    230 	if (ahc->flags & AHC_USEDEFAULTS) {
    231 		/*
    232 		 * We can't "use defaults", as we have no way
    233 		 * of knowing what default settings hould be.
    234 		 */
    235 		printf("%s: CardBus device requires an SEEPROM\n",
    236 		    ahc_name(ahc));
    237 		return;
    238 	}
    239 
    240 	printf("%s: aic7860", ahc_name(ahc));
    241 
    242 	/*
    243 	 * Record our termination setting for the
    244 	 * generic initialization routine.
    245 	 */
    246         if ((sxfrctl1 & STPWEN) != 0)
    247 		ahc->flags |= AHC_TERM_ENB_A;
    248 
    249 	if (ahc_init(ahc)) {
    250 		ahc_free(ahc);
    251 		return;
    252 	}
    253 
    254 	ahc_attach(ahc);
    255 }
    256 
    257 int
    258 ahc_cardbus_detach(self, flags)
    259 	struct device *self;
    260 	int flags;
    261 {
    262 	struct ahc_cardbus_softc *csc = (void*)self;
    263 	struct ahc_softc *ahc = &csc->sc_ahc;
    264 
    265 	int rv;
    266 
    267 	rv = ahc_detach((void *)ahc, flags);
    268 	if (rv)
    269 		return rv;
    270 
    271 	if (ahc->ih) {
    272 		cardbus_intr_disestablish(csc->sc_ct->ct_cc,
    273 					  csc->sc_ct->ct_cf, ahc->ih);
    274 		ahc->ih = 0;
    275 	}
    276 
    277 	if (csc->sc_cbenable) {
    278 		if (csc->sc_cbenable == CARDBUS_MEM_ENABLE)
    279 			Cardbus_mapreg_unmap(csc->sc_ct, AHC_CARDBUS_MMBA,
    280 				ahc->tag, ahc->bsh, csc->sc_size);
    281 		else if (csc->sc_cbenable == CARDBUS_IO_ENABLE)
    282 			Cardbus_mapreg_unmap(csc->sc_ct, AHC_CARDBUS_IOBA,
    283 				ahc->tag, ahc->bsh, csc->sc_size);
    284 	csc->sc_cbenable = 0;
    285 	}
    286 
    287 	return (0);
    288 }
    289 
    290 
    291 int
    292 ahc_activate(struct device *self, enum devact act)
    293 {
    294 	struct ahc_cardbus_softc *csc = (void*)self;
    295 	struct ahc_softc *ahc = &csc->sc_ahc;
    296 	int s, rv = 0;
    297 
    298 	s = splhigh();
    299 	switch (act) {
    300 	case DVACT_ACTIVATE:
    301 		rv = EOPNOTSUPP;
    302 		break;
    303 
    304 	case DVACT_DEACTIVATE:
    305 		if (ahc->sc_child != NULL)
    306 			rv = config_deactivate(ahc->sc_child);
    307 		break;
    308 	}
    309 	splx(s);
    310 
    311 	return (rv);
    312 }
    313