1/* 2 * Product specific probe and attach routines for: 3 * Adaptec 154x. 4 * 5 * Derived from code written by: 6 * 7 * Copyright (c) 1998 Justin T. Gibbs 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 *
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31 * $Id: aha_isa.c,v 1.1 1998/09/15 07:39:55 gibbs Exp $
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31 * $Id: aha_isa.c,v 1.2 1998/09/24 10:43:42 bde Exp $ |
32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36 37#include <machine/bus_pio.h> 38#include <machine/bus.h> 39 40#include <i386/isa/isa_device.h> 41#include <dev/aha/ahareg.h> 42 43#include <cam/scsi/scsi_all.h> 44 45static int aha_isa_probe __P((struct isa_device *dev)); 46static int aha_isa_attach __P((struct isa_device *dev)); 47static void aha_isa_intr __P((void *unit)); 48 49struct isa_driver ahadriver = 50{ 51 aha_isa_probe, 52 aha_isa_attach, 53 "aha" 54}; 55 56/* 57 * Check if the device can be found at the port given 58 * and if so, set it up ready for further work 59 * as an argument, takes the isa_device structure from 60 * autoconf.c 61 */ 62static int 63aha_isa_probe(dev) 64 struct isa_device *dev; 65{ 66 /* 67 * find unit and check we have that many defined 68 */ 69 struct aha_softc *aha; 70 int port_index; 71 int max_port_index; 72 73 /* 74 * We ignore the unit number assigned by config to allow 75 * consistant numbering between PCI/EISA/ISA devices. 76 * This is a total kludge until we have a configuration 77 * manager. 78 */ 79 dev->id_unit = aha_unit; 80 81 aha = NULL; 82 port_index = 0; 83 max_port_index = AHA_NUM_ISAPORTS - 1; 84 /* 85 * Bound our board search if the user has 86 * specified an exact port. 87 */ 88 if (dev->id_iobase > 0) { 89 for (;port_index <= max_port_index; port_index++) 90 if (dev->id_iobase >= aha_isa_ports[port_index].addr) 91 break; 92 if ((port_index > max_port_index) 93 || (dev->id_iobase != aha_isa_ports[port_index].addr)) { 94 printf(" 95aha_isa_probe: Invalid baseport of 0x%x specified. 96aha_isa_probe: Nearest valid baseport is 0x%x. 97aha_isa_probe: Failing probe.\n", 98 dev->id_iobase, 99 (port_index <= max_port_index) 100 ? aha_isa_ports[port_index].addr 101 : aha_isa_ports[max_port_index].addr); 102 return 0; 103 }
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104 max_port_index = port_index; |
105 } 106 107 /* Attempt to find an adapter */ 108 for (;port_index <= max_port_index; port_index++) { 109 config_data_t config_data; 110 u_int ioport; 111 int error; 112 113 ioport = aha_isa_ports[port_index].addr; 114 115 /* 116 * Ensure this port has not already been claimed already 117 * by a PCI or EISA adapter. 118 */ 119 if (aha_check_probed_iop(ioport) != 0) 120 continue; 121
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122 /* 123 * Make sure that we do not conflict with another device's 124 * I/O address. 125 */ 126 if (haveseen_isadev(dev, CC_IOADDR)) 127 continue; 128 |
129 /* Allocate a softc for use during probing */ 130 aha = aha_alloc(dev->id_unit, I386_BUS_SPACE_IO, ioport); 131 132 if (aha == NULL) 133 break; 134 135 /* We're going to attempt to probe it now, so mark it probed */ 136 aha_mark_probed_bio(port_index); 137 138 /* See if there is really a card present */ 139 if (aha_probe(aha) || aha_fetch_adapter_info(aha)) { 140 aha_free(aha); 141 continue; 142 } 143 144 /* 145 * Determine our IRQ, and DMA settings and 146 * export them to the configuration system. 147 */ 148 error = aha_cmd(aha, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0, 149 (u_int8_t*)&config_data, sizeof(config_data), 150 DEFAULT_CMD_TIMEOUT); 151 if (error != 0) { 152 printf("aha_isa_probe: Could not determine IRQ or DMA " 153 "settings for adapter at 0x%x. Failing probe\n", 154 ioport); 155 aha_free(aha); 156 continue; 157 } 158 159 switch (config_data.dma_chan) { 160 case DMA_CHAN_5: 161 dev->id_drq = 5; 162 break; 163 case DMA_CHAN_6: 164 dev->id_drq = 6; 165 break; 166 case DMA_CHAN_7: 167 dev->id_drq = 7; 168 break; 169 default: 170 printf("aha_isa_probe: Invalid DMA setting " 171 "detected for adapter at 0x%x. " 172 "Failing probe\n", ioport); 173 } 174 dev->id_iobase = aha_isa_ports[port_index].addr; 175 dev->id_irq = (config_data.irq << 9); 176 dev->id_intr = aha_isa_intr;
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177 178 /* 179 * OK, check to make sure that we're not stepping on 180 * someone else's IRQ or DRQ 181 */ 182 if (haveseen_isadev(dev, CC_DRQ)) { 183 printf("aha_isa_probe: Aha card at I/O 0x%x's drq %d " 184 "conflicts, ignoring card.\n", dev->id_iobase, 185 dev->id_drq); 186 aha_free(aha); 187 return 0; 188 } 189 if (haveseen_isadev(dev, CC_IRQ)) { 190 printf("aha_isa_probe: Aha card at I/O 0x%x's irq %d " 191 "conflicts, ignoring card.\n", dev->id_iobase, 192 config_data.irq + 9); 193 aha_free(aha); 194 return 0; 195 } |
196 aha_unit++; 197 return (AHA_NREGS); 198 } 199 200 return (0); 201} 202 203/* 204 * Attach all the sub-devices we can find 205 */ 206static int 207aha_isa_attach(dev) 208 struct isa_device *dev; 209{ 210 struct aha_softc *aha; 211 bus_dma_filter_t *filter; 212 void *filter_arg; 213 bus_addr_t lowaddr; 214 215 aha = aha_softcs[dev->id_unit]; 216 if (dev->id_drq != -1) 217 isa_dmacascade(dev->id_drq); 218 219 /* Allocate our parent dmatag */ 220 filter = NULL; 221 filter_arg = NULL; 222 lowaddr = BUS_SPACE_MAXADDR_24BIT; 223 224 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*boundary*/0, 225 lowaddr, /*highaddr*/BUS_SPACE_MAXADDR, 226 filter, filter_arg, 227 /*maxsize*/BUS_SPACE_MAXSIZE_24BIT, 228 /*nsegments*/BUS_SPACE_UNRESTRICTED, 229 /*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT, 230 /*flags*/0, &aha->parent_dmat) != 0) { 231 aha_free(aha); 232 return (-1); 233 } 234 235 if (aha_init(aha)) { 236 printf("aha init failed\n"); 237 aha_free(aha); 238 return (-1); 239 } 240 241 return (aha_attach(aha)); 242} 243 244/* 245 * Handle an ISA interrupt. 246 * XXX should go away as soon as ISA interrupt handlers 247 * take a (void *) arg. 248 */ 249static void 250aha_isa_intr(void *unit) 251{ 252 struct aha_softc* arg = aha_softcs[(int)unit]; 253 aha_intr((void *)arg); 254}
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