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 static struct isa_pnp_id pcic_ids[] = { 110 {EXCA_PNP_ACTIONTEC, NULL}, /* AEI0218 */ 111 {EXCA_PNP_IBM3765, NULL}, /* IBM3765 */ 112 {EXCA_PNP_82365, NULL}, /* PNP0E00 */ 113 {EXCA_PNP_CL_PD6720, NULL}, /* PNP0E01 */ 114 {EXCA_PNP_VLSI_82C146, NULL}, /* PNP0E02 */ 115 {EXCA_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */ 116 {EXCA_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */ 117 {0} 118 }; 119 120 /************************************************************************/ 121 /* Probe/Attach */ 122 /************************************************************************/ 123 124 static int 125 cbb_isa_activate(device_t dev) 126 { 127 struct cbb_softc *sc = device_get_softc(dev); 128 struct resource *res; 129 int rid; 130 int i; 131 132 /* A little bogus, but go ahead and get the irq for CSC events */ 133 rid = 0; 134 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 135 if (res == NULL) { 136 /* 137 * No IRQ specified, find one. This can be due to the PnP 138 * data not specifying any IRQ, or the default kernel not 139 * assinging an IRQ. 140 */ 141 for (i = 0; i < 16 && res == NULL; i++) { 142 if (((1 << i) & isa_intr_mask) == 0) 143 continue; 144 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i, 145 1, RF_ACTIVE); 146 } 147 } 148 if (res == NULL) 149 return (ENXIO); 150 sc->irq_res = res; 151 rid = 0; 152 res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE); 153 if (res == NULL) { 154 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); 155 sc->irq_res = NULL; 156 device_printf(dev, "Cannot allocate I/O\n"); 157 return (ENOMEM); 158 } 159 sc->bst = rman_get_bustag(res); 160 sc->bsh = rman_get_bushandle(res); 161 sc->base_res = res; 162 return (0); 163 } 164 165 static void 166 cbb_isa_deactivate(device_t dev) 167 { 168 struct cbb_softc *sc = device_get_softc(dev); 169 170 if (sc->irq_res) 171 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res); 172 sc->irq_res = NULL; 173 if (sc->base_res) 174 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->base_res); 175 sc->base_res = NULL; 176 } 177 178 static int 179 cbb_isa_probe(device_t dev) 180 { 181 int error; 182 struct cbb_softc *sc = device_get_softc(dev); 183 184 /* Check isapnp ids */ 185 error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids); 186 if (error != 0 && error != ENOENT) 187 return (error); 188 189 error = cbb_isa_activate(dev); 190 if (error != 0) 191 return (error); 192 193 /* Check to make sure that we have actual hardware */ 194 error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh); 195 cbb_isa_deactivate(dev); 196 return (error); 197 } 198 199 static int 200 cbb_isa_attach(device_t dev) 201 { 202 return (ENOMEM); 203 } 204 205 static int 206 cbb_isa_suspend(device_t dev) 207 { 208 return (0); 209 } 210 211 static int 212 cbb_isa_resume(device_t dev) 213 { 214 return (0); 215 } 216 217 static device_method_t cbb_methods[] = { 218 /* Device interface */ 219 DEVMETHOD(device_probe, cbb_isa_probe), 220 DEVMETHOD(device_attach, cbb_isa_attach), 221 DEVMETHOD(device_detach, cbb_detach), 222 DEVMETHOD(device_suspend, cbb_isa_suspend), 223 DEVMETHOD(device_resume, cbb_isa_resume), 224 225 /* bus methods */ 226 DEVMETHOD(bus_read_ivar, cbb_read_ivar), 227 DEVMETHOD(bus_write_ivar, cbb_write_ivar), 228 DEVMETHOD(bus_alloc_resource, cbb_alloc_resource), 229 DEVMETHOD(bus_release_resource, cbb_release_resource), 230 DEVMETHOD(bus_activate_resource, cbb_activate_resource), 231 DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource), 232 DEVMETHOD(bus_driver_added, cbb_driver_added), 233 DEVMETHOD(bus_child_detached, cbb_child_detached), 234 DEVMETHOD(bus_setup_intr, cbb_setup_intr), 235 DEVMETHOD(bus_teardown_intr, cbb_teardown_intr), 236 DEVMETHOD(bus_child_present, cbb_child_present), 237 238 /* 16-bit card interface */ 239 DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags), 240 DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset), 241 242 /* power interface */ 243 DEVMETHOD(power_enable_socket, cbb_power_enable_socket), 244 DEVMETHOD(power_disable_socket, cbb_power_disable_socket), 245 246 DEVMETHOD_END 247 }; 248 249 static driver_t cbb_isa_driver = { 250 "cbb", 251 cbb_methods, 252 sizeof(struct cbb_softc) 253 }; 254 255 DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, 0, 0); 256 MODULE_DEPEND(cbb, exca, 1, 1, 1); 257 ISA_PNP_INFO(pcic_ids); 258