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bcm53xx_usb.c revision 1.2.2.2
      1 /*-
      2  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to The NetBSD Foundation
      6  * by Matt Thomas of 3am Software Foundry.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     27  * POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include "locators.h"
     31 
     32 #include <sys/cdefs.h>
     33 
     34 __KERNEL_RCSID(1, "$NetBSD: bcm53xx_usb.c,v 1.2.2.2 2012/10/30 17:18:59 yamt Exp $");
     35 
     36 #include <sys/bus.h>
     37 #include <sys/device.h>
     38 #include <sys/intr.h>
     39 #include <sys/systm.h>
     40 
     41 #include <arm/broadcom/bcm53xx_reg.h>
     42 #include <arm/broadcom/bcm53xx_var.h>
     43 
     44 #include <dev/usb/usb.h>
     45 #include <dev/usb/usbdi.h>
     46 #include <dev/usb/usbdivar.h>
     47 #include <dev/usb/usb_mem.h>
     48 
     49 #include <dev/usb/ohcireg.h>
     50 #include <dev/usb/ohcivar.h>
     51 
     52 #include <dev/usb/ehcireg.h>
     53 #include <dev/usb/ehcivar.h>
     54 
     55 #include <dev/pci/pcidevs.h>
     56 
     57 struct bcmusb_softc {
     58 	device_t usbsc_dev;
     59 	bus_dma_tag_t usbsc_dmat;
     60 	bus_space_tag_t usbsc_bst;
     61 	bus_space_handle_t usbsc_ehci_bsh;
     62 	bus_space_handle_t usbsc_ohci_bsh;
     63 
     64 	device_t usbsc_ohci_dev;
     65 	device_t usbsc_ehci_dev;
     66 	void *usbsc_ohci_sc;
     67 	void *usbsc_ehci_sc;
     68 	void *usbsc_ih;
     69 };
     70 
     71 struct bcmusb_attach_args {
     72 	const char *usbaa_name;
     73 	bus_dma_tag_t usbaa_dmat;
     74 	bus_space_tag_t usbaa_bst;
     75 	bus_space_handle_t usbaa_bsh;
     76 	bus_size_t usbaa_size;
     77 };
     78 
     79 #ifdef OHCI_DEBUG
     80 #define OHCI_DPRINTF(x)	if (ohcidebug) printf x
     81 extern int ohcidebug;
     82 #else
     83 #define OHCI_DPRINTF(x)
     84 #endif
     85 
     86 static int ohci_bcmusb_match(device_t, cfdata_t, void *);
     87 static void ohci_bcmusb_attach(device_t, device_t, void *);
     88 
     89 CFATTACH_DECL_NEW(ohci_bcmusb, sizeof(struct ohci_softc),
     90 	ohci_bcmusb_match, ohci_bcmusb_attach, NULL, NULL);
     91 
     92 static int
     93 ohci_bcmusb_match(device_t parent, cfdata_t cf, void *aux)
     94 {
     95 	struct bcmusb_attach_args * const usbaa = aux;
     96 
     97 	if (strcmp(cf->cf_name, usbaa->usbaa_name))
     98 		return 0;
     99 
    100 	return 1;
    101 }
    102 
    103 static void
    104 ohci_bcmusb_attach(device_t parent, device_t self, void *aux)
    105 {
    106 	struct ohci_softc * const sc = device_private(self);
    107 	struct bcmusb_attach_args * const usbaa = aux;
    108 
    109 	sc->sc_dev = self;
    110 
    111 	sc->iot = usbaa->usbaa_bst;
    112 	sc->ioh = usbaa->usbaa_bsh;
    113 	sc->sc_size = usbaa->usbaa_size;
    114 	sc->sc_bus.dmatag = usbaa->usbaa_dmat;
    115 	sc->sc_bus.hci_private = sc;
    116 
    117 	sc->sc_id_vendor = PCI_VENDOR_BROADCOM;
    118 	strlcpy(sc->sc_vendor, "Broadcom", sizeof(sc->sc_vendor));
    119 
    120 	aprint_naive(": OHCI USB controller\n");
    121 	aprint_normal(": OHCI USB controller\n");
    122 
    123 	int error = ohci_init(sc);
    124 	if (error != USBD_NORMAL_COMPLETION) {
    125 		aprint_error_dev(self, "init failed, error=%d\n", error);
    126 	} else {
    127 		/* Attach usb device. */
    128 		sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
    129 	}
    130 }
    131 
    132 #ifdef EHCI_DEBUG
    133 #define EHCI_DPRINTF(x)	if (ehcidebug) printf x
    134 extern int ehcidebug;
    135 #else
    136 #define EHCI_DPRINTF(x)
    137 #endif
    138 
    139 static int ehci_bcmusb_match(device_t, cfdata_t, void *);
    140 static void ehci_bcmusb_attach(device_t, device_t, void *);
    141 
    142 CFATTACH_DECL_NEW(ehci_bcmusb, sizeof(struct ehci_softc),
    143 	ehci_bcmusb_match, ehci_bcmusb_attach, NULL, NULL);
    144 
    145 static int
    146 ehci_bcmusb_match(device_t parent, cfdata_t cf, void *aux)
    147 {
    148 	struct bcmusb_attach_args * const usbaa = aux;
    149 
    150 	if (strcmp(cf->cf_name, usbaa->usbaa_name))
    151 		return 0;
    152 
    153 	return 1;
    154 }
    155 
    156 static void
    157 ehci_bcmusb_attach(device_t parent, device_t self, void *aux)
    158 {
    159 	struct bcmusb_softc * const usbsc = device_private(parent);
    160 	struct ehci_softc * const sc = device_private(self);
    161 	struct bcmusb_attach_args * const usbaa = aux;
    162 
    163 	sc->sc_dev = self;
    164 
    165 	sc->iot = usbaa->usbaa_bst;
    166 	sc->ioh = usbaa->usbaa_bsh;
    167 	sc->sc_size = usbaa->usbaa_size;
    168 	sc->sc_bus.dmatag = usbaa->usbaa_dmat;
    169 	sc->sc_bus.hci_private = sc;
    170 	sc->sc_bus.usbrev = USBREV_2_0;
    171 	sc->sc_ncomp = 0;
    172 	if (usbsc->usbsc_ohci_dev != NULL) {
    173 		sc->sc_comps[sc->sc_ncomp++] = usbsc->usbsc_ohci_dev;
    174 	}
    175 
    176 	sc->sc_id_vendor = PCI_VENDOR_BROADCOM;
    177 	strlcpy(sc->sc_vendor, "Broadcom", sizeof(sc->sc_vendor));
    178 
    179 	aprint_naive(": EHCI USB controller\n");
    180 	aprint_normal(": ECHI USB controller\n");
    181 
    182 	int error = ehci_init(sc);
    183 	if (error != USBD_NORMAL_COMPLETION) {
    184 		aprint_error_dev(self, "init failed, error=%d\n", error);
    185 	} else {
    186 		/* Attach usb device. */
    187 		sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
    188 	}
    189 }
    190 
    191 /*
    192  * There's only IRQ shared between both OCHI and EHCI devices.
    193  */
    194 static int
    195 bcmusb_intr(void *arg)
    196 {
    197 	struct bcmusb_softc * const usbsc = arg;
    198 	int rv0 = 0, rv1 = 0;
    199 
    200 	if (usbsc->usbsc_ohci_sc)
    201 		rv0 = ohci_intr(usbsc->usbsc_ohci_sc);
    202 
    203 	if (usbsc->usbsc_ehci_sc)
    204 		rv1 = ehci_intr(usbsc->usbsc_ehci_sc);
    205 
    206 	return rv0 ? rv0 : rv1;
    207 }
    208 
    209 static int bcmusb_ccb_match(device_t, cfdata_t, void *);
    210 static void bcmusb_ccb_attach(device_t, device_t, void *);
    211 
    212 CFATTACH_DECL_NEW(bcmusb_ccb, sizeof(struct bcmusb_softc),
    213 	bcmusb_ccb_match, bcmusb_ccb_attach, NULL, NULL);
    214 
    215 int
    216 bcmusb_ccb_match(device_t parent, cfdata_t cf, void *aux)
    217 {
    218 	struct bcmccb_attach_args * const ccbaa = aux;
    219 	const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
    220 
    221 	if (strcmp(cf->cf_name, loc->loc_name) != 0)
    222 		return 0;
    223 
    224 	KASSERT(cf->cf_loc[BCMCCBCF_PORT] == BCMCCBCF_PORT_DEFAULT);
    225 
    226 	return 1;
    227 }
    228 
    229 void
    230 bcmusb_ccb_attach(device_t parent, device_t self, void *aux)
    231 {
    232 	struct bcmusb_softc * const usbsc = device_private(self);
    233 	const struct bcmccb_attach_args * const ccbaa = aux;
    234 	const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
    235 
    236 	usbsc->usbsc_bst = ccbaa->ccbaa_ccb_bst;
    237 	usbsc->usbsc_dmat = ccbaa->ccbaa_dmat;
    238 
    239 	bus_space_subregion(usbsc->usbsc_bst, ccbaa->ccbaa_ccb_bsh, EHCI_BASE,
    240 	    0x1000, &usbsc->usbsc_ehci_bsh);
    241 	bus_space_subregion(usbsc->usbsc_bst, ccbaa->ccbaa_ccb_bsh, OHCI_BASE,
    242 	    0x1000, &usbsc->usbsc_ohci_bsh);
    243 
    244 	/*
    245 	 * Disable interrupts
    246 	 */
    247 	bus_space_write_4(usbsc->usbsc_bst, usbsc->usbsc_ohci_bsh,
    248 	    OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
    249 	bus_size_t caplength = bus_space_read_1(usbsc->usbsc_bst,
    250 	    usbsc->usbsc_ehci_bsh, EHCI_CAPLENGTH);
    251 	bus_space_write_4(usbsc->usbsc_bst, usbsc->usbsc_ehci_bsh,
    252 	    caplength + EHCI_USBINTR, 0);
    253 
    254 	aprint_naive("\n");
    255 	aprint_normal("\n");
    256 
    257 	struct bcmusb_attach_args usbaa_ohci = {
    258 		.usbaa_name = "ohci",
    259 		.usbaa_dmat = usbsc->usbsc_dmat,
    260 		.usbaa_bst = usbsc->usbsc_bst,
    261 		.usbaa_bsh = usbsc->usbsc_ohci_bsh,
    262 		.usbaa_size = 0x100,
    263 	};
    264 
    265 	usbsc->usbsc_ohci_dev = config_found(self, &usbaa_ohci, NULL);
    266 	if (usbsc->usbsc_ohci_dev != NULL)
    267 		usbsc->usbsc_ohci_sc = device_private(usbsc->usbsc_ohci_dev);
    268 
    269 	struct bcmusb_attach_args usbaa_ehci = {
    270 		.usbaa_name = "ehci",
    271 		.usbaa_dmat = usbsc->usbsc_dmat,
    272 		.usbaa_bst = usbsc->usbsc_bst,
    273 		.usbaa_bsh = usbsc->usbsc_ehci_bsh,
    274 		.usbaa_size = 0x100,
    275 	};
    276 
    277 	usbsc->usbsc_ehci_dev = config_found(self, &usbaa_ehci, NULL);
    278 	if (usbsc->usbsc_ehci_dev != NULL)
    279 		usbsc->usbsc_ehci_sc = device_private(usbsc->usbsc_ehci_dev);
    280 
    281 	usbsc->usbsc_ih = intr_establish(loc->loc_intrs[0], IPL_USB, IST_LEVEL,
    282 	    bcmusb_intr, usbsc);
    283 	if (usbsc->usbsc_ih == NULL) {
    284 		aprint_error_dev(self, "failed to establish interrupt %d\n",
    285 		     loc->loc_intrs[0]);
    286 		return;
    287 	}
    288 	aprint_normal_dev(self, "interrupting on irq %d\n", loc->loc_intrs[0]);
    289 }
    290