1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2002-2004 M. Warner Losh. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * Driver for ISA to PCMCIA bridges compliant with the Intel ExCA 31 * specification. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/proc.h> 40 #include <sys/condvar.h> 41 #include <sys/errno.h> 42 #include <sys/kernel.h> 43 #include <sys/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/module.h> 46 #include <sys/mutex.h> 47 #include <sys/sysctl.h> 48 #include <sys/kthread.h> 49 #include <sys/bus.h> 50 #include <machine/bus.h> 51 #include <sys/rman.h> 52 #include <machine/resource.h> 53 54 #include <isa/isavar.h> 55 56 #include <dev/pci/pcivar.h> 57 #include <dev/pci/pcib_private.h> 58 59 #include <dev/pccard/pccardreg.h> 60 #include <dev/pccard/pccardvar.h> 61 62 #include <dev/exca/excareg.h> 63 #include <dev/exca/excavar.h> 64 65 #include <dev/pccbb/pccbbreg.h> 66 #include <dev/pccbb/pccbbvar.h> 67 68 #include "power_if.h" 69 #include "card_if.h" 70 71 /***************************************************************************** 72 * Configurable parameters. 73 *****************************************************************************/ 74 75 /* sysctl vars */ 76 static SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD, 0, "PCIC parameters"); 77 78 static int isa_intr_mask = EXCA_INT_MASK_ALLOWED; 79 SYSCTL_INT(_hw_pcic, OID_AUTO, intr_mask, CTLFLAG_RDTUN, &isa_intr_mask, 0, 80 "Mask of allowable interrupts for this laptop. The default is generally" 81 " correct, but some laptops do not route all the IRQ pins to the bridge to" 82 " save wires. Sometimes you need a more restrictive mask because some of" 83 " the hardware in your laptop may not have a driver so its IRQ might not be" 84 " allocated."); 85 86 /* 87 * CL-PD6722's VSENSE method 88 * 0: NO VSENSE (assume a 5.0V card always) 89 * 1: 6710's method (default) 90 * 2: 6729's method 91 */ 92 int pcic_pd6722_vsense = 1; 93 SYSCTL_INT(_hw_pcic, OID_AUTO, pd6722_vsense, CTLFLAG_RDTUN, 94 &pcic_pd6722_vsense, 1, 95 "Select CL-PD6722's VSENSE method. VSENSE is used to determine the" 96 " voltage of inserted cards. The CL-PD6722 has two methods to determine" 97 " the voltage of the card. 0 means assume a 5.0V card and do not check. 1" 98 " means use the same method that the CL-PD6710 uses (default). 2 means use" 99 " the same method as the CL-PD6729. 2 is documented in the datasheet as" 100 " being the correct way, but 1 seems to give better results on more" 101 " laptops."); 102 /***************************************************************************** 103 * End of configurable parameters. 104 *****************************************************************************/ 105 106 #define DPRINTF(x) do { if (cbb_debug) printf x; } while (0) 107 #define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0) 108 109 /* XXX Not sure that PNP0E03 should be claimed, except maybe on pc98 */ 110 static struct isa_pnp_id pcic_ids[] = { 111 {EXCA_PNP_ACTIONTEC, NULL}, /* AEI0218 */ 112 {EXCA_PNP_IBM3765, NULL}, /* IBM3765 */ 113 {EXCA_PNP_82365, NULL}, /* PNP0E00 */ 114 {EXCA_PNP_CL_PD6720, NULL}, /* PNP0E01 */ 115 {EXCA_PNP_VLSI_82C146, NULL}, /* PNP0E02 */ 116 {EXCA_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */ 117 {EXCA_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */ 118 {0} 119 }; 120 121 /************************************************************************/ 122 /* Probe/Attach */ 123 /************************************************************************/ 124 125 static int 126 cbb_isa_activate(device_t dev) 127 { 128 struct cbb_softc *sc = device_get_softc(dev); 129 struct resource *res; 130 int rid; 131 int i; 132 133 /* A little bogus, but go ahead and get the irq for CSC events */ 134 rid = 0; 135 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 136 if (res == NULL) { 137 /* 138 * No IRQ specified, find one. This can be due to the PnP 139 * data not specifying any IRQ, or the default kernel not 140 * assinging an IRQ. 141 */ 142 for (i = 0; i < 16 && res == NULL; i++) { 143 if (((1 << i) & isa_intr_mask) == 0) 144 continue; 145 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i, 146 1, RF_ACTIVE); 147 } 148 } 149 if (res == NULL) 150 return (ENXIO); 151 sc->irq_res = res; 152 rid = 0; 153 res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE); 154 if (res == NULL) { 155 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); 156 sc->irq_res = NULL; 157 device_printf(dev, "Cannot allocate I/O\n"); 158 return (ENOMEM); 159 } 160 sc->bst = rman_get_bustag(res); 161 sc->bsh = rman_get_bushandle(res); 162 sc->base_res = res; 163 return (0); 164 } 165 166 static void 167 cbb_isa_deactivate(device_t dev) 168 { 169 struct cbb_softc *sc = device_get_softc(dev); 170 171 if (sc->irq_res) 172 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); 173 sc->irq_res = NULL; 174 if (sc->base_res) 175 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->base_res); 176 sc->base_res = NULL; 177 } 178 179 static int 180 cbb_isa_probe(device_t dev) 181 { 182 int error; 183 struct cbb_softc *sc = device_get_softc(dev); 184 185 /* Check isapnp ids */ 186 error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids); 187 if (error != 0 && error != ENOENT) 188 return (error); 189 190 error = cbb_isa_activate(dev); 191 if (error != 0) 192 return (error); 193 194 /* Check to make sure that we have actual hardware */ 195 error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh); 196 cbb_isa_deactivate(dev); 197 return (error); 198 } 199 200 static int 201 cbb_isa_attach(device_t dev) 202 { 203 return (ENOMEM); 204 } 205 206 static int 207 cbb_isa_suspend(device_t dev) 208 { 209 return (0); 210 } 211 212 static int 213 cbb_isa_resume(device_t dev) 214 { 215 return (0); 216 } 217 218 static device_method_t cbb_methods[] = { 219 /* Device interface */ 220 DEVMETHOD(device_probe, cbb_isa_probe), 221 DEVMETHOD(device_attach, cbb_isa_attach), 222 DEVMETHOD(device_detach, cbb_detach), 223 DEVMETHOD(device_suspend, cbb_isa_suspend), 224 DEVMETHOD(device_resume, cbb_isa_resume), 225 226 /* bus methods */ 227 DEVMETHOD(bus_read_ivar, cbb_read_ivar), 228 DEVMETHOD(bus_write_ivar, cbb_write_ivar), 229 DEVMETHOD(bus_alloc_resource, cbb_alloc_resource), 230 DEVMETHOD(bus_release_resource, cbb_release_resource), 231 DEVMETHOD(bus_activate_resource, cbb_activate_resource), 232 DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource), 233 DEVMETHOD(bus_driver_added, cbb_driver_added), 234 DEVMETHOD(bus_child_detached, cbb_child_detached), 235 DEVMETHOD(bus_setup_intr, cbb_setup_intr), 236 DEVMETHOD(bus_teardown_intr, cbb_teardown_intr), 237 DEVMETHOD(bus_child_present, cbb_child_present), 238 239 /* 16-bit card interface */ 240 DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags), 241 DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset), 242 243 /* power interface */ 244 DEVMETHOD(power_enable_socket, cbb_power_enable_socket), 245 DEVMETHOD(power_disable_socket, cbb_power_disable_socket), 246 247 DEVMETHOD_END 248 }; 249 250 static driver_t cbb_isa_driver = { 251 "cbb", 252 cbb_methods, 253 sizeof(struct cbb_softc) 254 }; 255 256 DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, 0, 0); 257 MODULE_DEPEND(cbb, exca, 1, 1, 1); 258