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slhci_pcmcia.c revision 1.4 
      1 /* $NetBSD: slhci_pcmcia.c,v 1.4 2008/03/28 17:14:46 drochner Exp $ */
      2 /*
      3  * Not (c) 2007 Matthew Orgass
      4  * This file is public domain, meaning anyone can make any use of part or all
      5  * of this file including copying into other works without credit.  Any use,
      6  * modified or not, is solely the responsibility of the user.  If this file is
      7  * part of a collection then use in the collection is governed by the terms of
      8  * the collection.
      9  */
     10 
     11 /* Glue for RATOC USB HOST CF+ Card (SL811HS chip) */
     12 
     13 #include <sys/cdefs.h>
     14 __KERNEL_RCSID(0, "$NetBSD: slhci_pcmcia.c,v 1.4 2008/03/28 17:14:46 drochner Exp $");
     15 
     16 #include <sys/param.h>
     17 #include <sys/device.h>
     18 #include <sys/queue.h>
     19 #include <sys/gcq.h>
     20 #include <sys/systm.h>
     21 #include <sys/errno.h>
     22 
     23 #include <sys/bus.h>
     24 #include <dev/pcmcia/pcmciareg.h>
     25 #include <dev/pcmcia/pcmciavar.h>
     26 #include <dev/pcmcia/pcmciadevs.h>
     27 
     28 #include <dev/usb/usb.h>
     29 #include <dev/usb/usb_port.h>
     30 #include <dev/usb/usbdi.h>
     31 #include <dev/usb/usbdivar.h>
     32 
     33 #include <dev/ic/sl811hsvar.h>
     34 
     35 struct slhci_pcmcia_softc {
     36 	struct slhci_softc sc_slhci;
     37 
     38 	struct pcmcia_function *sc_pf;
     39 	void * sc_ih;
     40 	int sc_flags;
     41 #define PFL_ENABLED 		(0x1)
     42 };
     43 
     44 
     45 int slhci_pcmcia_probe(struct device *, struct cfdata *, void *);
     46 void slhci_pcmcia_attach(struct device *, struct device *, void *);
     47 int slhci_pcmcia_detach(struct device *, int);
     48 int slhci_pcmcia_validate_config(struct pcmcia_config_entry *);
     49 int slhci_pcmcia_enable(struct slhci_pcmcia_softc *, int);
     50 
     51 CFATTACH_DECL_NEW(slhci_pcmcia, sizeof(struct slhci_pcmcia_softc),
     52     slhci_pcmcia_probe, slhci_pcmcia_attach, slhci_pcmcia_detach,
     53     slhci_activate);
     54 
     55 /* Ratoc has two PCMCIA products with id 1.
     56  * Ratoc has a firmware update that modifies the CIS.  The new CIS may
     57  * need a new entry. */
     58 static const struct pcmcia_product slhci_pcmcia_products[] = {
     59 	{ PCMCIA_VENDOR_RATOC, PCMCIA_PRODUCT_RATOC_REX_CFU1,
     60 	  PCMCIA_CIS_RATOC_REX_CFU1 },
     61 };
     62 static const size_t slhci_pcmcia_nproducts =
     63 	sizeof(slhci_pcmcia_products) / sizeof(slhci_pcmcia_products[0]);
     64 
     65 int
     66 slhci_pcmcia_probe(struct device *parent, struct cfdata *match, void *aux)
     67 {
     68 	struct pcmcia_attach_args *pa = aux;
     69 
     70 	if (pcmcia_product_lookup(pa, slhci_pcmcia_products,
     71 	    slhci_pcmcia_nproducts, sizeof(slhci_pcmcia_products[0]), NULL))
     72 		return 1;
     73 
     74 	return 0;
     75 }
     76 
     77 int
     78 slhci_pcmcia_validate_config(struct pcmcia_config_entry *cfe)
     79 {
     80 	if (cfe->num_iospace != 1 || cfe->num_memspace != 0)
     81 		return EINVAL;
     82 	return 0;
     83 }
     84 
     85 void
     86 slhci_pcmcia_attach(struct device *parent, struct device *self, void *aux)
     87 {
     88 	struct slhci_pcmcia_softc *psc = device_private(self);
     89 	struct pcmcia_attach_args *pa = aux;
     90 	struct pcmcia_function *pf = pa->pf;
     91 
     92 	psc->sc_slhci.sc_dev = self;
     93 
     94 	psc->sc_pf = pf;
     95 	psc->sc_flags = 0;
     96 
     97 	slhci_pcmcia_enable(psc, 1);
     98 
     99 	return;
    100 }
    101 
    102 int
    103 slhci_pcmcia_detach(struct device *self, int flags)
    104 {
    105 	struct slhci_pcmcia_softc *psc = device_private(self);
    106 
    107 	slhci_pcmcia_enable(psc, 0);
    108 
    109 	return slhci_detach(&psc->sc_slhci, flags);
    110 }
    111 
    112 int
    113 slhci_pcmcia_enable(struct slhci_pcmcia_softc *psc, int enable)
    114 {
    115 	struct pcmcia_function *pf;
    116 	struct pcmcia_io_handle *pioh;
    117 	struct slhci_softc *sc;
    118 	int error;
    119 
    120 	pf = psc->sc_pf;
    121 	sc = &psc->sc_slhci;
    122 
    123 	if (enable) {
    124 		if (psc->sc_flags & PFL_ENABLED)
    125 			return 0;
    126 
    127 		error = pcmcia_function_configure(pf,
    128 		    slhci_pcmcia_validate_config);
    129 		if (error) {
    130 			printf("%s: configure failed, error=%d\n",
    131 			    SC_NAME(sc), error);
    132 			return 1;
    133 		}
    134 
    135 		pioh = &pf->cfe->iospace[0].handle;
    136 
    137 		/* The data port is repeated three times; using a stride of
    138 		 * 2 prevents read/write errors on a Clio C-1000 hpcmips
    139 		 * system.
    140 		 */
    141 		slhci_preinit(sc, NULL, pioh->iot, pioh->ioh, 100, 2);
    142 
    143 		psc->sc_ih = pcmcia_intr_establish(pf, IPL_HARDUSB,
    144 		    slhci_intr, sc);
    145 
    146 		if (psc->sc_ih == NULL) {
    147 			printf("%s: unable to establish interrupt\n",
    148 			    SC_NAME(sc));
    149 			goto fail1;
    150 		}
    151 
    152 		if (pcmcia_function_enable(pf)) {
    153 			printf("%s: function enable failed\n", SC_NAME(sc));
    154 			goto fail2;
    155 		}
    156 
    157 		if (slhci_attach(sc)) {
    158 			printf("%s: slhci_attach failed\n", SC_NAME(sc));
    159 			goto fail3;
    160 		}
    161 
    162 		psc->sc_flags |= PFL_ENABLED;
    163 		return 0;
    164 	} else {
    165 		if (!(psc->sc_flags & PFL_ENABLED))
    166 			return 1;
    167 		psc->sc_flags &= ~PFL_ENABLED;
    168 fail3:
    169 		pcmcia_function_disable(pf);
    170 fail2:
    171 		pcmcia_intr_disestablish(psc->sc_pf, psc->sc_ih);
    172 fail1:
    173 		pcmcia_function_unconfigure(pf);
    174 
    175 		return 1;
    176 	}
    177 }
    178 
    179 
    180