Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Linux driver attachment glue for PCI based controllers. |
| 3 | * |
| 4 | * Copyright (c) 2000-2001 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/aic7xxx_osm_pci.c#47 $ |
| 40 | */ |
| 41 | |
| 42 | #include "aic7xxx_osm.h" |
| 43 | #include "aic7xxx_pci.h" |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | /* Define the macro locally since it's different for different class of chips. |
| 46 | */ |
| 47 | #define ID(x) ID_C(x, PCI_CLASS_STORAGE_SCSI) |
| 48 | |
| 49 | static struct pci_device_id ahc_linux_pci_id_table[] = { |
| 50 | /* aic7850 based controllers */ |
| 51 | ID(ID_AHA_2902_04_10_15_20C_30C), |
| 52 | /* aic7860 based controllers */ |
| 53 | ID(ID_AHA_2930CU), |
| 54 | ID(ID_AHA_1480A & ID_DEV_VENDOR_MASK), |
| 55 | ID(ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK), |
| 56 | ID(ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK), |
| 57 | ID(ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK), |
| 58 | /* aic7870 based controllers */ |
| 59 | ID(ID_AHA_2940), |
| 60 | ID(ID_AHA_3940), |
| 61 | ID(ID_AHA_398X), |
| 62 | ID(ID_AHA_2944), |
| 63 | ID(ID_AHA_3944), |
| 64 | ID(ID_AHA_4944), |
| 65 | /* aic7880 based controllers */ |
| 66 | ID(ID_AHA_2940U & ID_DEV_VENDOR_MASK), |
| 67 | ID(ID_AHA_3940U & ID_DEV_VENDOR_MASK), |
| 68 | ID(ID_AHA_2944U & ID_DEV_VENDOR_MASK), |
| 69 | ID(ID_AHA_3944U & ID_DEV_VENDOR_MASK), |
| 70 | ID(ID_AHA_398XU & ID_DEV_VENDOR_MASK), |
| 71 | ID(ID_AHA_4944U & ID_DEV_VENDOR_MASK), |
| 72 | ID(ID_AHA_2930U & ID_DEV_VENDOR_MASK), |
| 73 | ID(ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK), |
| 74 | ID(ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK), |
| 75 | /* aic7890 based controllers */ |
| 76 | ID(ID_AHA_2930U2), |
| 77 | ID(ID_AHA_2940U2B), |
| 78 | ID(ID_AHA_2940U2_OEM), |
| 79 | ID(ID_AHA_2940U2), |
| 80 | ID(ID_AHA_2950U2B), |
| 81 | ID16(ID_AIC7890_ARO & ID_AIC7895_ARO_MASK), |
| 82 | ID(ID_AAA_131U2), |
| 83 | /* aic7890 based controllers */ |
| 84 | ID(ID_AHA_29160), |
| 85 | ID(ID_AHA_29160_CPQ), |
| 86 | ID(ID_AHA_29160N), |
| 87 | ID(ID_AHA_29160C), |
| 88 | ID(ID_AHA_29160B), |
| 89 | ID(ID_AHA_19160B), |
| 90 | ID(ID_AIC7892_ARO), |
| 91 | /* aic7892 based controllers */ |
| 92 | ID(ID_AHA_2940U_DUAL), |
| 93 | ID(ID_AHA_3940AU), |
| 94 | ID(ID_AHA_3944AU), |
| 95 | ID(ID_AIC7895_ARO), |
| 96 | ID(ID_AHA_3950U2B_0), |
| 97 | ID(ID_AHA_3950U2B_1), |
| 98 | ID(ID_AHA_3950U2D_0), |
| 99 | ID(ID_AHA_3950U2D_1), |
| 100 | ID(ID_AIC7896_ARO), |
| 101 | /* aic7899 based controllers */ |
| 102 | ID(ID_AHA_3960D), |
| 103 | ID(ID_AHA_3960D_CPQ), |
| 104 | ID(ID_AIC7899_ARO), |
| 105 | /* Generic chip probes for devices we don't know exactly. */ |
| 106 | ID(ID_AIC7850 & ID_DEV_VENDOR_MASK), |
| 107 | ID(ID_AIC7855 & ID_DEV_VENDOR_MASK), |
| 108 | ID(ID_AIC7859 & ID_DEV_VENDOR_MASK), |
| 109 | ID(ID_AIC7860 & ID_DEV_VENDOR_MASK), |
| 110 | ID(ID_AIC7870 & ID_DEV_VENDOR_MASK), |
| 111 | ID(ID_AIC7880 & ID_DEV_VENDOR_MASK), |
| 112 | ID16(ID_AIC7890 & ID_9005_GENERIC_MASK), |
| 113 | ID16(ID_AIC7892 & ID_9005_GENERIC_MASK), |
| 114 | ID(ID_AIC7895 & ID_DEV_VENDOR_MASK), |
| 115 | ID16(ID_AIC7896 & ID_9005_GENERIC_MASK), |
| 116 | ID16(ID_AIC7899 & ID_9005_GENERIC_MASK), |
| 117 | ID(ID_AIC7810 & ID_DEV_VENDOR_MASK), |
| 118 | ID(ID_AIC7815 & ID_DEV_VENDOR_MASK), |
| 119 | { 0 } |
| 120 | }; |
| 121 | |
| 122 | MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table); |
| 123 | |
Hannes Reinecke | b572072 | 2007-10-19 10:32:21 +0200 | [diff] [blame] | 124 | #ifdef CONFIG_PM |
Hannes Reinecke | b572072 | 2007-10-19 10:32:21 +0200 | [diff] [blame] | 125 | static int |
| 126 | ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg) |
| 127 | { |
| 128 | struct ahc_softc *ahc = pci_get_drvdata(pdev); |
| 129 | int rc; |
| 130 | |
| 131 | if ((rc = ahc_suspend(ahc))) |
| 132 | return rc; |
| 133 | |
| 134 | pci_save_state(pdev); |
| 135 | pci_disable_device(pdev); |
| 136 | |
Rafael J. Wysocki | 3a2d5b7 | 2008-02-23 19:13:25 +0100 | [diff] [blame] | 137 | if (mesg.event & PM_EVENT_SLEEP) |
Hannes Reinecke | b572072 | 2007-10-19 10:32:21 +0200 | [diff] [blame] | 138 | pci_set_power_state(pdev, PCI_D3hot); |
| 139 | |
| 140 | return rc; |
| 141 | } |
| 142 | |
| 143 | static int |
| 144 | ahc_linux_pci_dev_resume(struct pci_dev *pdev) |
| 145 | { |
| 146 | struct ahc_softc *ahc = pci_get_drvdata(pdev); |
| 147 | int rc; |
| 148 | |
| 149 | pci_set_power_state(pdev, PCI_D0); |
| 150 | pci_restore_state(pdev); |
| 151 | |
| 152 | if ((rc = pci_enable_device(pdev))) { |
| 153 | dev_printk(KERN_ERR, &pdev->dev, |
| 154 | "failed to enable device after resume (%d)\n", rc); |
| 155 | return rc; |
| 156 | } |
| 157 | |
| 158 | pci_set_master(pdev); |
| 159 | |
| 160 | ahc_pci_resume(ahc); |
| 161 | |
| 162 | return (ahc_resume(ahc)); |
| 163 | } |
FUJITA Tomonori | 03e7925 | 2008-01-27 00:08:19 +0900 | [diff] [blame] | 164 | #endif |
Hannes Reinecke | b572072 | 2007-10-19 10:32:21 +0200 | [diff] [blame] | 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | static void |
| 167 | ahc_linux_pci_dev_remove(struct pci_dev *pdev) |
| 168 | { |
Christoph Hellwig | 3d65692 | 2005-06-11 00:14:30 +0200 | [diff] [blame] | 169 | struct ahc_softc *ahc = pci_get_drvdata(pdev); |
| 170 | u_long s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
James Bottomley | 97af50f | 2005-10-02 15:22:35 -0500 | [diff] [blame] | 172 | if (ahc->platform_data && ahc->platform_data->host) |
| 173 | scsi_remove_host(ahc->platform_data->host); |
| 174 | |
Christoph Hellwig | 3d65692 | 2005-06-11 00:14:30 +0200 | [diff] [blame] | 175 | ahc_lock(ahc, &s); |
| 176 | ahc_intr_enable(ahc, FALSE); |
| 177 | ahc_unlock(ahc, &s); |
| 178 | ahc_free(ahc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | } |
| 180 | |
James Bottomley | 3a4f5c6 | 2005-08-13 09:42:45 -0500 | [diff] [blame] | 181 | static void |
| 182 | ahc_linux_pci_inherit_flags(struct ahc_softc *ahc) |
| 183 | { |
| 184 | struct pci_dev *pdev = ahc->dev_softc, *master_pdev; |
| 185 | unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0); |
| 186 | |
| 187 | master_pdev = pci_get_slot(pdev->bus, master_devfn); |
| 188 | if (master_pdev) { |
| 189 | struct ahc_softc *master = pci_get_drvdata(master_pdev); |
| 190 | if (master) { |
| 191 | ahc->flags &= ~AHC_BIOS_ENABLED; |
| 192 | ahc->flags |= master->flags & AHC_BIOS_ENABLED; |
| 193 | |
| 194 | ahc->flags &= ~AHC_PRIMARY_CHANNEL; |
| 195 | ahc->flags |= master->flags & AHC_PRIMARY_CHANNEL; |
| 196 | } else |
| 197 | printk(KERN_ERR "aic7xxx: no multichannel peer found!\n"); |
| 198 | pci_dev_put(master_pdev); |
| 199 | } |
| 200 | } |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | static int |
| 203 | ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 204 | { |
| 205 | char buf[80]; |
| 206 | const uint64_t mask_39bit = 0x7FFFFFFFFFULL; |
| 207 | struct ahc_softc *ahc; |
| 208 | ahc_dev_softc_t pci; |
| 209 | struct ahc_pci_identity *entry; |
| 210 | char *name; |
| 211 | int error; |
James Bottomley | a89f29f6 | 2005-08-30 11:48:07 -0500 | [diff] [blame] | 212 | struct device *dev = &pdev->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | pci = pdev; |
| 215 | entry = ahc_find_pci_device(pci); |
| 216 | if (entry == NULL) |
| 217 | return (-ENODEV); |
| 218 | |
| 219 | /* |
| 220 | * Allocate a softc for this card and |
| 221 | * set it up for attachment by our |
| 222 | * common detect routine. |
| 223 | */ |
| 224 | sprintf(buf, "ahc_pci:%d:%d:%d", |
| 225 | ahc_get_pci_bus(pci), |
| 226 | ahc_get_pci_slot(pci), |
| 227 | ahc_get_pci_function(pci)); |
| 228 | name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); |
| 229 | if (name == NULL) |
| 230 | return (-ENOMEM); |
| 231 | strcpy(name, buf); |
| 232 | ahc = ahc_alloc(NULL, name); |
| 233 | if (ahc == NULL) |
| 234 | return (-ENOMEM); |
| 235 | if (pci_enable_device(pdev)) { |
| 236 | ahc_free(ahc); |
| 237 | return (-ENODEV); |
| 238 | } |
| 239 | pci_set_master(pdev); |
| 240 | |
| 241 | if (sizeof(dma_addr_t) > 4 |
James Bottomley | a89f29f6 | 2005-08-30 11:48:07 -0500 | [diff] [blame] | 242 | && ahc->features & AHC_LARGE_SCBS |
| 243 | && dma_set_mask(dev, mask_39bit) == 0 |
| 244 | && dma_get_required_mask(dev) > DMA_32BIT_MASK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | ahc->flags |= AHC_39BIT_ADDRESSING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | } else { |
James Bottomley | a89f29f6 | 2005-08-30 11:48:07 -0500 | [diff] [blame] | 247 | if (dma_set_mask(dev, DMA_32BIT_MASK)) { |
Jesper Juhl | 4a6fae1 | 2006-04-23 20:16:02 +0200 | [diff] [blame] | 248 | ahc_free(ahc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n"); |
| 250 | return (-ENODEV); |
| 251 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | ahc->dev_softc = pci; |
| 254 | error = ahc_pci_config(ahc, entry); |
| 255 | if (error != 0) { |
| 256 | ahc_free(ahc); |
| 257 | return (-error); |
| 258 | } |
James Bottomley | 3a4f5c6 | 2005-08-13 09:42:45 -0500 | [diff] [blame] | 259 | |
| 260 | /* |
| 261 | * Second Function PCI devices need to inherit some |
| 262 | * settings from function 0. |
| 263 | */ |
| 264 | if ((ahc->features & AHC_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0) |
| 265 | ahc_linux_pci_inherit_flags(ahc); |
| 266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | pci_set_drvdata(pdev, ahc); |
Christoph Hellwig | dfd287f | 2005-06-28 16:49:44 +0200 | [diff] [blame] | 268 | ahc_linux_register_host(ahc, &aic7xxx_driver_template); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | return (0); |
| 270 | } |
| 271 | |
Denys Vlasenko | be0d676 | 2008-03-23 04:41:22 +0100 | [diff] [blame] | 272 | /******************************* PCI Routines *********************************/ |
| 273 | uint32_t |
| 274 | ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width) |
| 275 | { |
| 276 | switch (width) { |
| 277 | case 1: |
| 278 | { |
| 279 | uint8_t retval; |
| 280 | |
| 281 | pci_read_config_byte(pci, reg, &retval); |
| 282 | return (retval); |
| 283 | } |
| 284 | case 2: |
| 285 | { |
| 286 | uint16_t retval; |
| 287 | pci_read_config_word(pci, reg, &retval); |
| 288 | return (retval); |
| 289 | } |
| 290 | case 4: |
| 291 | { |
| 292 | uint32_t retval; |
| 293 | pci_read_config_dword(pci, reg, &retval); |
| 294 | return (retval); |
| 295 | } |
| 296 | default: |
| 297 | panic("ahc_pci_read_config: Read size too big"); |
| 298 | /* NOTREACHED */ |
| 299 | return (0); |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | void |
| 304 | ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width) |
| 305 | { |
| 306 | switch (width) { |
| 307 | case 1: |
| 308 | pci_write_config_byte(pci, reg, value); |
| 309 | break; |
| 310 | case 2: |
| 311 | pci_write_config_word(pci, reg, value); |
| 312 | break; |
| 313 | case 4: |
| 314 | pci_write_config_dword(pci, reg, value); |
| 315 | break; |
| 316 | default: |
| 317 | panic("ahc_pci_write_config: Write size too big"); |
| 318 | /* NOTREACHED */ |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | |
FUJITA Tomonori | 03e7925 | 2008-01-27 00:08:19 +0900 | [diff] [blame] | 323 | static struct pci_driver aic7xxx_pci_driver = { |
| 324 | .name = "aic7xxx", |
| 325 | .probe = ahc_linux_pci_dev_probe, |
| 326 | #ifdef CONFIG_PM |
| 327 | .suspend = ahc_linux_pci_dev_suspend, |
| 328 | .resume = ahc_linux_pci_dev_resume, |
| 329 | #endif |
| 330 | .remove = ahc_linux_pci_dev_remove, |
| 331 | .id_table = ahc_linux_pci_id_table |
| 332 | }; |
| 333 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | int |
| 335 | ahc_linux_pci_init(void) |
| 336 | { |
Henrik Kretzschmar | dcbccbde | 2006-09-25 16:58:58 -0700 | [diff] [blame] | 337 | return pci_register_driver(&aic7xxx_pci_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | void |
| 341 | ahc_linux_pci_exit(void) |
| 342 | { |
| 343 | pci_unregister_driver(&aic7xxx_pci_driver); |
| 344 | } |
| 345 | |
| 346 | static int |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 347 | ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, resource_size_t *base) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | { |
| 349 | if (aic7xxx_allow_memio == 0) |
| 350 | return (ENOMEM); |
| 351 | |
| 352 | *base = pci_resource_start(ahc->dev_softc, 0); |
| 353 | if (*base == 0) |
| 354 | return (ENOMEM); |
| 355 | if (request_region(*base, 256, "aic7xxx") == 0) |
| 356 | return (ENOMEM); |
| 357 | return (0); |
| 358 | } |
| 359 | |
| 360 | static int |
| 361 | ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc, |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 362 | resource_size_t *bus_addr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | uint8_t __iomem **maddr) |
| 364 | { |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 365 | resource_size_t start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | int error; |
| 367 | |
| 368 | error = 0; |
| 369 | start = pci_resource_start(ahc->dev_softc, 1); |
| 370 | if (start != 0) { |
| 371 | *bus_addr = start; |
| 372 | if (request_mem_region(start, 0x1000, "aic7xxx") == 0) |
| 373 | error = ENOMEM; |
| 374 | if (error == 0) { |
| 375 | *maddr = ioremap_nocache(start, 256); |
| 376 | if (*maddr == NULL) { |
| 377 | error = ENOMEM; |
| 378 | release_mem_region(start, 0x1000); |
| 379 | } |
| 380 | } |
| 381 | } else |
| 382 | error = ENOMEM; |
| 383 | return (error); |
| 384 | } |
| 385 | |
| 386 | int |
| 387 | ahc_pci_map_registers(struct ahc_softc *ahc) |
| 388 | { |
| 389 | uint32_t command; |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 390 | resource_size_t base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | uint8_t __iomem *maddr; |
| 392 | int error; |
| 393 | |
| 394 | /* |
| 395 | * If its allowed, we prefer memory mapped access. |
| 396 | */ |
| 397 | command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, 4); |
| 398 | command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN); |
| 399 | base = 0; |
| 400 | maddr = NULL; |
| 401 | error = ahc_linux_pci_reserve_mem_region(ahc, &base, &maddr); |
| 402 | if (error == 0) { |
| 403 | ahc->platform_data->mem_busaddr = base; |
| 404 | ahc->tag = BUS_SPACE_MEMIO; |
| 405 | ahc->bsh.maddr = maddr; |
| 406 | ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, |
| 407 | command | PCIM_CMD_MEMEN, 4); |
| 408 | |
| 409 | /* |
| 410 | * Do a quick test to see if memory mapped |
| 411 | * I/O is functioning correctly. |
| 412 | */ |
| 413 | if (ahc_pci_test_register_access(ahc) != 0) { |
| 414 | |
| 415 | printf("aic7xxx: PCI Device %d:%d:%d " |
| 416 | "failed memory mapped test. Using PIO.\n", |
| 417 | ahc_get_pci_bus(ahc->dev_softc), |
| 418 | ahc_get_pci_slot(ahc->dev_softc), |
| 419 | ahc_get_pci_function(ahc->dev_softc)); |
| 420 | iounmap(maddr); |
| 421 | release_mem_region(ahc->platform_data->mem_busaddr, |
| 422 | 0x1000); |
| 423 | ahc->bsh.maddr = NULL; |
| 424 | maddr = NULL; |
| 425 | } else |
| 426 | command |= PCIM_CMD_MEMEN; |
| 427 | } else { |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 428 | printf("aic7xxx: PCI%d:%d:%d MEM region 0x%llx " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | "unavailable. Cannot memory map device.\n", |
| 430 | ahc_get_pci_bus(ahc->dev_softc), |
| 431 | ahc_get_pci_slot(ahc->dev_softc), |
| 432 | ahc_get_pci_function(ahc->dev_softc), |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 433 | (unsigned long long)base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | } |
| 435 | |
| 436 | /* |
| 437 | * We always prefer memory mapped access. |
| 438 | */ |
| 439 | if (maddr == NULL) { |
| 440 | |
| 441 | error = ahc_linux_pci_reserve_io_region(ahc, &base); |
| 442 | if (error == 0) { |
| 443 | ahc->tag = BUS_SPACE_PIO; |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 444 | ahc->bsh.ioport = (u_long)base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | command |= PCIM_CMD_PORTEN; |
| 446 | } else { |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 447 | printf("aic7xxx: PCI%d:%d:%d IO region 0x%llx[0..255] " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | "unavailable. Cannot map device.\n", |
| 449 | ahc_get_pci_bus(ahc->dev_softc), |
| 450 | ahc_get_pci_slot(ahc->dev_softc), |
| 451 | ahc_get_pci_function(ahc->dev_softc), |
Sergei Shtylyov | 4485041 | 2008-04-18 23:30:45 +0400 | [diff] [blame^] | 452 | (unsigned long long)base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | } |
| 454 | } |
| 455 | ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, 4); |
| 456 | return (error); |
| 457 | } |
| 458 | |
| 459 | int |
| 460 | ahc_pci_map_int(struct ahc_softc *ahc) |
| 461 | { |
| 462 | int error; |
| 463 | |
| 464 | error = request_irq(ahc->dev_softc->irq, ahc_linux_isr, |
Thomas Gleixner | 1d6f359 | 2006-07-01 19:29:42 -0700 | [diff] [blame] | 465 | IRQF_SHARED, "aic7xxx", ahc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | if (error == 0) |
| 467 | ahc->platform_data->irq = ahc->dev_softc->irq; |
| 468 | |
| 469 | return (-error); |
| 470 | } |
| 471 | |