Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Linux driver attachment glue for aic7770 based controllers. |
| 3 | * |
| 4 | * Copyright (c) 2000-2003 Adaptec Inc. |
| 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 | * without modification. |
| 13 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 14 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 15 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 16 | * including a substantially similar Disclaimer requirement for further |
| 17 | * binary redistribution. |
| 18 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 19 | * of any contributors may be used to endorse or promote products derived |
| 20 | * from this software without specific prior written permission. |
| 21 | * |
| 22 | * Alternatively, this software may be distributed under the terms of the |
| 23 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 24 | * Software Foundation. |
| 25 | * |
| 26 | * NO WARRANTY |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 30 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 31 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 35 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 36 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 37 | * POSSIBILITY OF SUCH DAMAGES. |
| 38 | * |
| 39 | * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7770_osm.c#14 $ |
| 40 | */ |
| 41 | |
| 42 | #include "aic7xxx_osm.h" |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/device.h> |
| 45 | #include <linux/eisa.h> |
| 46 | |
| 47 | #define EISA_MFCTR_CHAR0(ID) (char)(((ID>>26) & 0x1F) | '@') /* Bits 26-30 */ |
| 48 | #define EISA_MFCTR_CHAR1(ID) (char)(((ID>>21) & 0x1F) | '@') /* Bits 21-25 */ |
| 49 | #define EISA_MFCTR_CHAR2(ID) (char)(((ID>>16) & 0x1F) | '@') /* Bits 16-20 */ |
| 50 | #define EISA_PRODUCT_ID(ID) (short)((ID>>4) & 0xFFF) /* Bits 4-15 */ |
| 51 | #define EISA_REVISION_ID(ID) (uint8_t)(ID & 0x0F) /* Bits 0-3 */ |
| 52 | |
| 53 | static int aic7770_eisa_dev_probe(struct device *dev); |
| 54 | static int aic7770_eisa_dev_remove(struct device *dev); |
| 55 | static struct eisa_driver aic7770_driver = { |
| 56 | .driver = { |
| 57 | .name = "aic7xxx", |
| 58 | .probe = aic7770_eisa_dev_probe, |
| 59 | .remove = aic7770_eisa_dev_remove, |
| 60 | } |
| 61 | }; |
| 62 | |
| 63 | typedef struct device *aic7770_dev_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | static int aic7770_linux_config(struct aic7770_identity *entry, |
| 66 | aic7770_dev_t dev, u_int eisaBase); |
| 67 | |
| 68 | int |
| 69 | ahc_linux_eisa_init(void) |
| 70 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | struct eisa_device_id *eid; |
| 72 | struct aic7770_identity *id; |
| 73 | int i; |
| 74 | |
| 75 | if (aic7xxx_probe_eisa_vl == 0) |
| 76 | return -ENODEV; |
| 77 | |
| 78 | /* |
| 79 | * Linux requires the EISA IDs to be specified in |
| 80 | * the EISA ID string format. Perform the conversion |
| 81 | * and setup a table with a NUL terminal entry. |
| 82 | */ |
| 83 | aic7770_driver.id_table = malloc(sizeof(struct eisa_device_id) * |
| 84 | (ahc_num_aic7770_devs + 1), |
| 85 | M_DEVBUF, M_NOWAIT); |
| 86 | if (aic7770_driver.id_table == NULL) |
| 87 | return -ENOMEM; |
| 88 | |
| 89 | for (eid = (struct eisa_device_id *)aic7770_driver.id_table, |
| 90 | id = aic7770_ident_table, i = 0; |
| 91 | i < ahc_num_aic7770_devs; eid++, id++, i++) { |
| 92 | |
| 93 | sprintf(eid->sig, "%c%c%c%03X%01X", |
| 94 | EISA_MFCTR_CHAR0(id->full_id), |
| 95 | EISA_MFCTR_CHAR1(id->full_id), |
| 96 | EISA_MFCTR_CHAR2(id->full_id), |
| 97 | EISA_PRODUCT_ID(id->full_id), |
| 98 | EISA_REVISION_ID(id->full_id)); |
| 99 | eid->driver_data = i; |
| 100 | } |
| 101 | eid->sig[0] = 0; |
| 102 | |
| 103 | return eisa_driver_register(&aic7770_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | void |
| 107 | ahc_linux_eisa_exit(void) |
| 108 | { |
| 109 | if(aic7xxx_probe_eisa_vl != 0 && aic7770_driver.id_table != NULL) { |
| 110 | eisa_driver_unregister(&aic7770_driver); |
| 111 | free(aic7770_driver.id_table, M_DEVBUF); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | static int |
| 116 | aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev, |
| 117 | u_int eisaBase) |
| 118 | { |
| 119 | struct ahc_softc *ahc; |
| 120 | char buf[80]; |
| 121 | char *name; |
| 122 | int error; |
| 123 | |
| 124 | /* |
| 125 | * Allocate a softc for this card and |
| 126 | * set it up for attachment by our |
| 127 | * common detect routine. |
| 128 | */ |
| 129 | sprintf(buf, "ahc_eisa:%d", eisaBase >> 12); |
| 130 | name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); |
| 131 | if (name == NULL) |
| 132 | return (ENOMEM); |
| 133 | strcpy(name, buf); |
| 134 | ahc = ahc_alloc(&aic7xxx_driver_template, name); |
| 135 | if (ahc == NULL) |
| 136 | return (ENOMEM); |
| 137 | error = aic7770_config(ahc, entry, eisaBase); |
| 138 | if (error != 0) { |
| 139 | ahc->bsh.ioport = 0; |
| 140 | ahc_free(ahc); |
| 141 | return (error); |
| 142 | } |
Christoph Hellwig | dedd831 | 2005-05-16 18:52:06 +0200 | [diff] [blame] | 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | dev->driver_data = (void *)ahc; |
| 145 | if (aic7xxx_detect_complete) |
| 146 | error = ahc_linux_register_host(ahc, &aic7xxx_driver_template); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | return (error); |
| 148 | } |
| 149 | |
| 150 | int |
| 151 | aic7770_map_registers(struct ahc_softc *ahc, u_int port) |
| 152 | { |
| 153 | /* |
| 154 | * Lock out other contenders for our i/o space. |
| 155 | */ |
| 156 | if (request_region(port, AHC_EISA_IOSIZE, "aic7xxx") == 0) |
| 157 | return (ENOMEM); |
| 158 | ahc->tag = BUS_SPACE_PIO; |
| 159 | ahc->bsh.ioport = port; |
| 160 | return (0); |
| 161 | } |
| 162 | |
| 163 | int |
| 164 | aic7770_map_int(struct ahc_softc *ahc, u_int irq) |
| 165 | { |
| 166 | int error; |
| 167 | int shared; |
| 168 | |
| 169 | shared = 0; |
| 170 | if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0) |
| 171 | shared = SA_SHIRQ; |
| 172 | |
| 173 | error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc); |
| 174 | if (error == 0) |
| 175 | ahc->platform_data->irq = irq; |
| 176 | |
| 177 | return (-error); |
| 178 | } |
| 179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | static int |
| 181 | aic7770_eisa_dev_probe(struct device *dev) |
| 182 | { |
| 183 | struct eisa_device *edev; |
| 184 | |
| 185 | edev = to_eisa_device(dev); |
| 186 | return (aic7770_linux_config(aic7770_ident_table + edev->id.driver_data, |
| 187 | dev, edev->base_addr+AHC_EISA_SLOT_OFFSET)); |
| 188 | } |
| 189 | |
| 190 | static int |
| 191 | aic7770_eisa_dev_remove(struct device *dev) |
| 192 | { |
| 193 | struct ahc_softc *ahc; |
| 194 | u_long l; |
| 195 | |
| 196 | /* |
| 197 | * We should be able to just perform |
| 198 | * the free directly, but check our |
| 199 | * list for extra sanity. |
| 200 | */ |
| 201 | ahc_list_lock(&l); |
| 202 | ahc = ahc_find_softc((struct ahc_softc *)dev->driver_data); |
| 203 | if (ahc != NULL) { |
| 204 | u_long s; |
| 205 | |
| 206 | ahc_lock(ahc, &s); |
| 207 | ahc_intr_enable(ahc, FALSE); |
| 208 | ahc_unlock(ahc, &s); |
| 209 | ahc_free(ahc); |
| 210 | } |
| 211 | ahc_list_unlock(&l); |
| 212 | |
| 213 | return (0); |
| 214 | } |