1139749Simp/*- 2133912Sgibbs * FreeBSD, VLB/ISA product support functions 3133912Sgibbs * 4133912Sgibbs * Copyright (c) 2004 Justin T. Gibbs. 5133912Sgibbs * All rights reserved. 6133912Sgibbs * 7133912Sgibbs * Redistribution and use in source and binary forms, with or without 8133912Sgibbs * modification, are permitted provided that the following conditions 9133912Sgibbs * are met: 10133912Sgibbs * 1. Redistributions of source code must retain the above copyright 11133912Sgibbs * notice, this list of conditions, and the following disclaimer, 12133912Sgibbs * without modification. 13133912Sgibbs * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14133912Sgibbs * substantially similar to the "NO WARRANTY" disclaimer below 15133912Sgibbs * ("Disclaimer") and any redistribution must be conditioned upon 16133912Sgibbs * including a substantially similar Disclaimer requirement for further 17133912Sgibbs * binary redistribution. 18133912Sgibbs * 3. Neither the names of the above-listed copyright holders nor the names 19133912Sgibbs * of any contributors may be used to endorse or promote products derived 20133912Sgibbs * from this software without specific prior written permission. 21133912Sgibbs * 22133912Sgibbs * NO WARRANTY 23133912Sgibbs * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24133912Sgibbs * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25133912Sgibbs * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 26133912Sgibbs * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27133912Sgibbs * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28133912Sgibbs * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29133912Sgibbs * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30133912Sgibbs * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31133912Sgibbs * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 32133912Sgibbs * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33133912Sgibbs * POSSIBILITY OF SUCH DAMAGES. 34133912Sgibbs * 35133912Sgibbs * $Id$ 36133912Sgibbs */ 37133912Sgibbs 38133912Sgibbs#include <sys/cdefs.h> 39133912Sgibbs__FBSDID("$FreeBSD$"); 40133912Sgibbs 41133912Sgibbs#include <dev/aic7xxx/aic7xxx_osm.h> 42133912Sgibbs 43133912Sgibbs#include <sys/limits.h> /* For CHAR_BIT*/ 44133912Sgibbs#include <isa/isavar.h> /* For ISA attach glue */ 45133912Sgibbs 46133912Sgibbs 47133912Sgibbsstatic struct aic7770_identity *ahc_isa_find_device(bus_space_tag_t tag, 48133912Sgibbs bus_space_handle_t bsh); 49133912Sgibbsstatic void ahc_isa_identify(driver_t *driver, 50133912Sgibbs device_t parent); 51133912Sgibbsstatic int ahc_isa_probe(device_t dev); 52133912Sgibbsstatic int ahc_isa_attach(device_t dev); 53133912Sgibbs 54133912Sgibbs/* 55133912Sgibbs * Perform an EISA probe of the address with the addition 56133912Sgibbs * of a "priming" step. The 284X requires priming (a write 57133912Sgibbs * to offset 0x80, the first EISA ID register) to ensure it 58133912Sgibbs * is not mistaken as an EISA card. Once we have the ID, 59133912Sgibbs * lookup the controller in the aic7770 table of supported 60133912Sgibbs * devices. 61133912Sgibbs */ 62133912Sgibbsstatic struct aic7770_identity * 63133912Sgibbsahc_isa_find_device(bus_space_tag_t tag, bus_space_handle_t bsh) { 64133964Sgibbs uint32_t id; 65133912Sgibbs u_int id_size; 66133912Sgibbs int i; 67133912Sgibbs 68133912Sgibbs id = 0; 69133912Sgibbs id_size = sizeof(id); 70133912Sgibbs for (i = 0; i < id_size; i++) { 71133912Sgibbs bus_space_write_1(tag, bsh, 0x80, 0x80 + i); 72133912Sgibbs id |= bus_space_read_1(tag, bsh, 0x80 + i) 73133912Sgibbs << ((id_size - i - 1) * CHAR_BIT); 74133912Sgibbs } 75133912Sgibbs 76133912Sgibbs return (aic7770_find_device(id)); 77133912Sgibbs} 78133912Sgibbs 79133912Sgibbsstatic void 80133912Sgibbsahc_isa_identify(driver_t *driver, device_t parent) 81133912Sgibbs{ 82133912Sgibbs int slot; 83133912Sgibbs int max_slot; 84133912Sgibbs 85133912Sgibbs max_slot = 14; 86133912Sgibbs for (slot = 0; slot <= max_slot; slot++) { 87133912Sgibbs struct aic7770_identity *entry; 88133912Sgibbs bus_space_tag_t tag; 89133912Sgibbs bus_space_handle_t bsh; 90133912Sgibbs struct resource *regs; 91133912Sgibbs uint32_t iobase; 92133912Sgibbs int rid; 93133912Sgibbs 94133912Sgibbs rid = 0; 95133964Sgibbs iobase = (slot * AHC_EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET; 96133912Sgibbs regs = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid, 97133912Sgibbs iobase, iobase, AHC_EISA_IOSIZE, 98133912Sgibbs RF_ACTIVE); 99133912Sgibbs if (regs == NULL) { 100133912Sgibbs if (bootverbose) 101249574Sneel printf("ahc_isa_identify %d: ioport 0x%x " 102133912Sgibbs "alloc failed\n", slot, iobase); 103133912Sgibbs continue; 104133912Sgibbs } 105133912Sgibbs 106133912Sgibbs tag = rman_get_bustag(regs); 107133912Sgibbs bsh = rman_get_bushandle(regs); 108133912Sgibbs 109133912Sgibbs entry = ahc_isa_find_device(tag, bsh); 110133912Sgibbs if (entry != NULL) { 111133912Sgibbs device_t child; 112133912Sgibbs 113133912Sgibbs child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, 114133912Sgibbs "ahc", -1); 115133912Sgibbs if (child != NULL) { 116133912Sgibbs device_set_driver(child, driver); 117133912Sgibbs bus_set_resource(child, SYS_RES_IOPORT, 118133912Sgibbs 0, iobase, AHC_EISA_IOSIZE); 119133912Sgibbs } 120133912Sgibbs } 121133912Sgibbs bus_release_resource(parent, SYS_RES_IOPORT, rid, regs); 122133912Sgibbs } 123133912Sgibbs} 124133912Sgibbs 125133912Sgibbsstatic int 126133912Sgibbsahc_isa_probe(device_t dev) 127133912Sgibbs{ 128133912Sgibbs struct aic7770_identity *entry; 129133912Sgibbs bus_space_tag_t tag; 130133912Sgibbs bus_space_handle_t bsh; 131133912Sgibbs struct resource *regs; 132133912Sgibbs struct resource *irq; 133133912Sgibbs uint32_t iobase; 134133912Sgibbs u_int intdef; 135133912Sgibbs u_int hcntrl; 136133912Sgibbs int irq_num; 137133912Sgibbs int error; 138133912Sgibbs int zero; 139133912Sgibbs 140136569Sgibbs error = ENXIO; 141133912Sgibbs zero = 0; 142133912Sgibbs regs = NULL; 143133912Sgibbs irq = NULL; 144133912Sgibbs 145136569Sgibbs /* Skip probes for ISA PnP devices */ 146136569Sgibbs if (isa_get_logicalid(dev) != 0) 147136569Sgibbs return (error); 148136569Sgibbs 149133912Sgibbs regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE); 150133912Sgibbs if (regs == NULL) { 151134531Sgibbs device_printf(dev, "No resources allocated.\n"); 152133912Sgibbs return (ENOMEM); 153133912Sgibbs } 154133912Sgibbs 155133982Sgibbs iobase = rman_get_start(regs); 156133912Sgibbs tag = rman_get_bustag(regs); 157133912Sgibbs bsh = rman_get_bushandle(regs); 158133912Sgibbs 159133912Sgibbs entry = ahc_isa_find_device(tag, bsh); 160133912Sgibbs if (entry == NULL) 161133912Sgibbs goto cleanup; 162133912Sgibbs 163133912Sgibbs /* Pause the card preseving the IRQ type */ 164133912Sgibbs hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS; 165133912Sgibbs bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE); 166133912Sgibbs while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0) 167133912Sgibbs ; 168133912Sgibbs 169133912Sgibbs /* Make sure we have a valid interrupt vector */ 170133912Sgibbs intdef = bus_space_read_1(tag, bsh, INTDEF); 171133912Sgibbs irq_num = intdef & VECTOR; 172133912Sgibbs switch (irq_num) { 173133912Sgibbs case 9: 174133912Sgibbs case 10: 175133912Sgibbs case 11: 176133912Sgibbs case 12: 177133912Sgibbs case 14: 178133912Sgibbs case 15: 179133912Sgibbs break; 180133912Sgibbs default: 181133912Sgibbs device_printf(dev, "@0x%x: illegal irq setting %d\n", 182133912Sgibbs iobase, irq_num); 183133912Sgibbs goto cleanup; 184133912Sgibbs } 185133912Sgibbs 186133912Sgibbs if (bus_set_resource(dev, SYS_RES_IRQ, zero, irq_num, 1) != 0) 187133912Sgibbs goto cleanup; 188133912Sgibbs 189133912Sgibbs /* 190133912Sgibbs * The 284X only supports edge triggered interrupts, 191133912Sgibbs * so do not claim RF_SHAREABLE. 192133912Sgibbs */ 193133912Sgibbs irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, 194133912Sgibbs 0 /*!(RF_ACTIVE|RF_SHAREABLE)*/); 195133912Sgibbs if (irq != NULL) { 196133912Sgibbs error = 0; 197133912Sgibbs device_set_desc(dev, entry->name); 198133912Sgibbs } else 199133912Sgibbs device_printf(dev, "@0x%x: irq %d allocation failed\n", 200133912Sgibbs iobase, irq_num); 201133912Sgibbs 202133912Sgibbscleanup: 203133912Sgibbs if (regs != NULL) { 204133912Sgibbs bus_release_resource(dev, SYS_RES_IOPORT, zero, regs); 205133912Sgibbs regs = NULL; 206133912Sgibbs } 207133912Sgibbs 208133912Sgibbs if (irq != NULL) { 209133912Sgibbs bus_release_resource(dev, SYS_RES_IRQ, zero, irq); 210133912Sgibbs irq = NULL; 211133912Sgibbs } 212133912Sgibbs 213133912Sgibbs return (error); 214133912Sgibbs} 215133912Sgibbs 216133912Sgibbsstatic int 217133912Sgibbsahc_isa_attach(device_t dev) 218133912Sgibbs{ 219133912Sgibbs struct aic7770_identity *entry; 220133912Sgibbs bus_space_tag_t tag; 221133912Sgibbs bus_space_handle_t bsh; 222133912Sgibbs struct resource *regs; 223133912Sgibbs struct ahc_softc *ahc; 224133912Sgibbs char *name; 225133912Sgibbs int zero; 226133912Sgibbs int error; 227133912Sgibbs 228133912Sgibbs zero = 0; 229133912Sgibbs regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE); 230133912Sgibbs if (regs == NULL) 231133912Sgibbs return (ENOMEM); 232133912Sgibbs 233133912Sgibbs tag = rman_get_bustag(regs); 234133912Sgibbs bsh = rman_get_bushandle(regs); 235133912Sgibbs entry = ahc_isa_find_device(tag, bsh); 236133912Sgibbs bus_release_resource(dev, SYS_RES_IOPORT, zero, regs); 237133912Sgibbs if (entry == NULL) 238133912Sgibbs return (ENODEV); 239133912Sgibbs 240133912Sgibbs /* 241133912Sgibbs * Allocate a softc for this card and 242133912Sgibbs * set it up for attachment by our 243133912Sgibbs * common detect routine. 244133912Sgibbs */ 245133912Sgibbs name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); 246133912Sgibbs if (name == NULL) 247133912Sgibbs return (ENOMEM); 248133912Sgibbs strcpy(name, device_get_nameunit(dev)); 249133912Sgibbs ahc = ahc_alloc(dev, name); 250133912Sgibbs if (ahc == NULL) 251133912Sgibbs return (ENOMEM); 252133912Sgibbs 253133912Sgibbs ahc_set_unit(ahc, device_get_unit(dev)); 254133912Sgibbs 255133912Sgibbs /* Allocate a dmatag for our SCB DMA maps */ 256161928Sjmg error = aic_dma_tag_create(ahc, /*parent*/bus_get_dma_tag(dev), 257161928Sjmg /*alignment*/1, /*boundary*/0, 258133912Sgibbs /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 259133912Sgibbs /*highaddr*/BUS_SPACE_MAXADDR, 260133912Sgibbs /*filter*/NULL, /*filterarg*/NULL, 261133912Sgibbs /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 262133912Sgibbs /*nsegments*/AHC_NSEG, 263133912Sgibbs /*maxsegsz*/AHC_MAXTRANSFER_SIZE, 264133912Sgibbs /*flags*/0, 265133912Sgibbs &ahc->parent_dmat); 266133912Sgibbs 267133912Sgibbs if (error != 0) { 268133912Sgibbs printf("ahc_isa_attach: Could not allocate DMA tag " 269133912Sgibbs "- error %d\n", error); 270133912Sgibbs ahc_free(ahc); 271133912Sgibbs return (ENOMEM); 272133912Sgibbs } 273133912Sgibbs ahc->dev_softc = dev; 274133912Sgibbs error = aic7770_config(ahc, entry, /*unused ioport arg*/0); 275133912Sgibbs if (error != 0) { 276133912Sgibbs ahc_free(ahc); 277133912Sgibbs return (error); 278133912Sgibbs } 279133912Sgibbs 280133912Sgibbs ahc_attach(ahc); 281133912Sgibbs return (0); 282133912Sgibbs} 283133912Sgibbs 284133912Sgibbsstatic device_method_t ahc_isa_device_methods[] = { 285133912Sgibbs /* Device interface */ 286133912Sgibbs DEVMETHOD(device_identify, ahc_isa_identify), 287133912Sgibbs DEVMETHOD(device_probe, ahc_isa_probe), 288133912Sgibbs DEVMETHOD(device_attach, ahc_isa_attach), 289133912Sgibbs DEVMETHOD(device_detach, ahc_detach), 290133912Sgibbs { 0, 0 } 291133912Sgibbs}; 292133912Sgibbs 293133912Sgibbsstatic driver_t ahc_isa_driver = { 294133912Sgibbs "ahc", 295133912Sgibbs ahc_isa_device_methods, 296133912Sgibbs sizeof(struct ahc_softc) 297133912Sgibbs}; 298133912Sgibbs 299133912SgibbsDRIVER_MODULE(ahc_isa, isa, ahc_isa_driver, ahc_devclass, 0, 0); 300133912SgibbsMODULE_DEPEND(ahc_isa, ahc, 1, 1, 1); 301133912SgibbsMODULE_VERSION(ahc_isa, 1); 302