Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * PCI handling of I2O controller |
| 3 | * |
| 4 | * Copyright (C) 1999-2002 Red Hat Software |
| 5 | * |
| 6 | * Written by Alan Cox, Building Number Three Ltd |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | * |
| 13 | * A lot of the I2O message side code from this is taken from the Red |
| 14 | * Creek RCPCI45 adapter driver by Red Creek Communications |
| 15 | * |
| 16 | * Fixes/additions: |
| 17 | * Philipp Rumpf |
| 18 | * Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI> |
| 19 | * Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI> |
| 20 | * Deepak Saxena <deepak@plexity.net> |
| 21 | * Boji T Kannanthanam <boji.t.kannanthanam@intel.com> |
| 22 | * Alan Cox <alan@redhat.com>: |
| 23 | * Ported to Linux 2.5. |
| 24 | * Markus Lidel <Markus.Lidel@shadowconnect.com>: |
| 25 | * Minor fixes for 2.6. |
| 26 | * Markus Lidel <Markus.Lidel@shadowconnect.com>: |
| 27 | * Support for sysfs included. |
| 28 | */ |
| 29 | |
| 30 | #include <linux/pci.h> |
| 31 | #include <linux/interrupt.h> |
| 32 | #include <linux/i2o.h> |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | /* Module internal functions from other sources */ |
| 35 | extern struct i2o_controller *i2o_iop_alloc(void); |
| 36 | extern void i2o_iop_free(struct i2o_controller *); |
| 37 | |
| 38 | extern int i2o_iop_add(struct i2o_controller *); |
| 39 | extern void i2o_iop_remove(struct i2o_controller *); |
| 40 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 41 | extern int i2o_driver_dispatch(struct i2o_controller *, u32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | /* PCI device id table for all I2O controllers */ |
| 44 | static struct pci_device_id __devinitdata i2o_pci_ids[] = { |
| 45 | {PCI_DEVICE_CLASS(PCI_CLASS_INTELLIGENT_I2O << 8, 0xffff00)}, |
| 46 | {PCI_DEVICE(PCI_VENDOR_ID_DPT, 0xa511)}, |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 47 | {.vendor = PCI_VENDOR_ID_INTEL,.device = 0x1962, |
| 48 | .subvendor = PCI_VENDOR_ID_PROMISE,.subdevice = PCI_ANY_ID}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | {0} |
| 50 | }; |
| 51 | |
| 52 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | * i2o_pci_free - Frees the DMA memory for the I2O controller |
| 54 | * @c: I2O controller to free |
| 55 | * |
| 56 | * Remove all allocated DMA memory and unmap memory IO regions. If MTRR |
| 57 | * is enabled, also remove it again. |
| 58 | */ |
| 59 | static void i2o_pci_free(struct i2o_controller *c) |
| 60 | { |
| 61 | struct device *dev; |
| 62 | |
| 63 | dev = &c->pdev->dev; |
| 64 | |
| 65 | i2o_dma_free(dev, &c->out_queue); |
| 66 | i2o_dma_free(dev, &c->status_block); |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 67 | kfree(c->lct); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | i2o_dma_free(dev, &c->dlct); |
| 69 | i2o_dma_free(dev, &c->hrt); |
| 70 | i2o_dma_free(dev, &c->status); |
| 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | if (c->raptor && c->in_queue.virt) |
| 73 | iounmap(c->in_queue.virt); |
| 74 | |
| 75 | if (c->base.virt) |
| 76 | iounmap(c->base.virt); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * i2o_pci_alloc - Allocate DMA memory, map IO memory for I2O controller |
| 81 | * @c: I2O controller |
| 82 | * |
| 83 | * Allocate DMA memory for a PCI (or in theory AGP) I2O controller. All |
| 84 | * IO mappings are also done here. If MTRR is enabled, also do add memory |
| 85 | * regions here. |
| 86 | * |
| 87 | * Returns 0 on success or negative error code on failure. |
| 88 | */ |
| 89 | static int __devinit i2o_pci_alloc(struct i2o_controller *c) |
| 90 | { |
| 91 | struct pci_dev *pdev = c->pdev; |
| 92 | struct device *dev = &pdev->dev; |
| 93 | int i; |
| 94 | |
| 95 | for (i = 0; i < 6; i++) { |
| 96 | /* Skip I/O spaces */ |
| 97 | if (!(pci_resource_flags(pdev, i) & IORESOURCE_IO)) { |
| 98 | if (!c->base.phys) { |
| 99 | c->base.phys = pci_resource_start(pdev, i); |
| 100 | c->base.len = pci_resource_len(pdev, i); |
| 101 | |
| 102 | /* |
| 103 | * If we know what card it is, set the size |
| 104 | * correctly. Code is taken from dpt_i2o.c |
| 105 | */ |
| 106 | if (pdev->device == 0xa501) { |
| 107 | if (pdev->subsystem_device >= 0xc032 && |
| 108 | pdev->subsystem_device <= 0xc03b) { |
| 109 | if (c->base.len > 0x400000) |
| 110 | c->base.len = 0x400000; |
| 111 | } else { |
| 112 | if (c->base.len > 0x100000) |
| 113 | c->base.len = 0x100000; |
| 114 | } |
| 115 | } |
| 116 | if (!c->raptor) |
| 117 | break; |
| 118 | } else { |
| 119 | c->in_queue.phys = pci_resource_start(pdev, i); |
| 120 | c->in_queue.len = pci_resource_len(pdev, i); |
| 121 | break; |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | if (i == 6) { |
| 127 | printk(KERN_ERR "%s: I2O controller has no memory regions" |
| 128 | " defined.\n", c->name); |
| 129 | i2o_pci_free(c); |
| 130 | return -EINVAL; |
| 131 | } |
| 132 | |
| 133 | /* Map the I2O controller */ |
| 134 | if (c->raptor) { |
| 135 | printk(KERN_INFO "%s: PCI I2O controller\n", c->name); |
| 136 | printk(KERN_INFO " BAR0 at 0x%08lX size=%ld\n", |
| 137 | (unsigned long)c->base.phys, (unsigned long)c->base.len); |
| 138 | printk(KERN_INFO " BAR1 at 0x%08lX size=%ld\n", |
| 139 | (unsigned long)c->in_queue.phys, |
| 140 | (unsigned long)c->in_queue.len); |
| 141 | } else |
| 142 | printk(KERN_INFO "%s: PCI I2O controller at %08lX size=%ld\n", |
| 143 | c->name, (unsigned long)c->base.phys, |
| 144 | (unsigned long)c->base.len); |
| 145 | |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 146 | c->base.virt = ioremap_nocache(c->base.phys, c->base.len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | if (!c->base.virt) { |
| 148 | printk(KERN_ERR "%s: Unable to map controller.\n", c->name); |
| 149 | return -ENOMEM; |
| 150 | } |
| 151 | |
| 152 | if (c->raptor) { |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 153 | c->in_queue.virt = |
| 154 | ioremap_nocache(c->in_queue.phys, c->in_queue.len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | if (!c->in_queue.virt) { |
| 156 | printk(KERN_ERR "%s: Unable to map controller.\n", |
| 157 | c->name); |
| 158 | i2o_pci_free(c); |
| 159 | return -ENOMEM; |
| 160 | } |
| 161 | } else |
| 162 | c->in_queue = c->base; |
| 163 | |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 164 | c->irq_status = c->base.virt + I2O_IRQ_STATUS; |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 165 | c->irq_mask = c->base.virt + I2O_IRQ_MASK; |
| 166 | c->in_port = c->base.virt + I2O_IN_PORT; |
| 167 | c->out_port = c->base.virt + I2O_OUT_PORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | if (i2o_dma_alloc(dev, &c->status, 8, GFP_KERNEL)) { |
| 170 | i2o_pci_free(c); |
| 171 | return -ENOMEM; |
| 172 | } |
| 173 | |
| 174 | if (i2o_dma_alloc(dev, &c->hrt, sizeof(i2o_hrt), GFP_KERNEL)) { |
| 175 | i2o_pci_free(c); |
| 176 | return -ENOMEM; |
| 177 | } |
| 178 | |
| 179 | if (i2o_dma_alloc(dev, &c->dlct, 8192, GFP_KERNEL)) { |
| 180 | i2o_pci_free(c); |
| 181 | return -ENOMEM; |
| 182 | } |
| 183 | |
| 184 | if (i2o_dma_alloc(dev, &c->status_block, sizeof(i2o_status_block), |
| 185 | GFP_KERNEL)) { |
| 186 | i2o_pci_free(c); |
| 187 | return -ENOMEM; |
| 188 | } |
| 189 | |
| 190 | if (i2o_dma_alloc(dev, &c->out_queue, MSG_POOL_SIZE, GFP_KERNEL)) { |
| 191 | i2o_pci_free(c); |
| 192 | return -ENOMEM; |
| 193 | } |
| 194 | |
| 195 | pci_set_drvdata(pdev, c); |
| 196 | |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * i2o_pci_interrupt - Interrupt handler for I2O controller |
| 202 | * @irq: interrupt line |
| 203 | * @dev_id: pointer to the I2O controller |
| 204 | * @r: pointer to registers |
| 205 | * |
| 206 | * Handle an interrupt from a PCI based I2O controller. This turns out |
| 207 | * to be rather simple. We keep the controller pointer in the cookie. |
| 208 | */ |
| 209 | static irqreturn_t i2o_pci_interrupt(int irq, void *dev_id, struct pt_regs *r) |
| 210 | { |
| 211 | struct i2o_controller *c = dev_id; |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 212 | u32 m; |
| 213 | irqreturn_t rc = IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 215 | while (readl(c->irq_status) & I2O_IRQ_OUTBOUND_POST) { |
| 216 | m = readl(c->out_port); |
| 217 | if (m == I2O_QUEUE_EMPTY) { |
| 218 | /* |
| 219 | * Old 960 steppings had a bug in the I2O unit that |
| 220 | * caused the queue to appear empty when it wasn't. |
| 221 | */ |
| 222 | m = readl(c->out_port); |
| 223 | if (unlikely(m == I2O_QUEUE_EMPTY)) |
| 224 | break; |
| 225 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | /* dispatch it */ |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 228 | if (i2o_driver_dispatch(c, m)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | /* flush it if result != 0 */ |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 230 | i2o_flush_reply(c, m); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 232 | rc = IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 234 | |
Markus Lidel | f10378f | 2005-06-23 22:02:16 -0700 | [diff] [blame] | 235 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | /** |
| 239 | * i2o_pci_irq_enable - Allocate interrupt for I2O controller |
| 240 | * |
| 241 | * Allocate an interrupt for the I2O controller, and activate interrupts |
| 242 | * on the I2O controller. |
| 243 | * |
| 244 | * Returns 0 on success or negative error code on failure. |
| 245 | */ |
| 246 | static int i2o_pci_irq_enable(struct i2o_controller *c) |
| 247 | { |
| 248 | struct pci_dev *pdev = c->pdev; |
| 249 | int rc; |
| 250 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 251 | wmb(); |
| 252 | writel(0xffffffff, c->irq_mask); |
| 253 | wmb(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
| 255 | if (pdev->irq) { |
| 256 | rc = request_irq(pdev->irq, i2o_pci_interrupt, SA_SHIRQ, |
| 257 | c->name, c); |
| 258 | if (rc < 0) { |
| 259 | printk(KERN_ERR "%s: unable to allocate interrupt %d." |
| 260 | "\n", c->name, pdev->irq); |
| 261 | return rc; |
| 262 | } |
| 263 | } |
| 264 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 265 | writel(0x00000000, c->irq_mask); |
| 266 | wmb(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
| 268 | printk(KERN_INFO "%s: Installed at IRQ %d\n", c->name, pdev->irq); |
| 269 | |
| 270 | return 0; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * i2o_pci_irq_disable - Free interrupt for I2O controller |
| 275 | * @c: I2O controller |
| 276 | * |
| 277 | * Disable interrupts in I2O controller and then free interrupt. |
| 278 | */ |
| 279 | static void i2o_pci_irq_disable(struct i2o_controller *c) |
| 280 | { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 281 | wmb(); |
| 282 | writel(0xffffffff, c->irq_mask); |
| 283 | wmb(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
| 285 | if (c->pdev->irq > 0) |
| 286 | free_irq(c->pdev->irq, c); |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * i2o_pci_probe - Probe the PCI device for an I2O controller |
| 291 | * @dev: PCI device to test |
| 292 | * @id: id which matched with the PCI device id table |
| 293 | * |
| 294 | * Probe the PCI device for any device which is a memory of the |
| 295 | * Intelligent, I2O class or an Adaptec Zero Channel Controller. We |
| 296 | * attempt to set up each such device and register it with the core. |
| 297 | * |
| 298 | * Returns 0 on success or negative error code on failure. |
| 299 | */ |
| 300 | static int __devinit i2o_pci_probe(struct pci_dev *pdev, |
| 301 | const struct pci_device_id *id) |
| 302 | { |
| 303 | struct i2o_controller *c; |
| 304 | int rc; |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 305 | struct pci_dev *i960 = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
| 307 | printk(KERN_INFO "i2o: Checking for PCI I2O controllers...\n"); |
| 308 | |
| 309 | if ((pdev->class & 0xff) > 1) { |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 310 | printk(KERN_WARNING "i2o: %s does not support I2O 1.5 " |
| 311 | "(skipping).\n", pci_name(pdev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | return -ENODEV; |
| 313 | } |
| 314 | |
| 315 | if ((rc = pci_enable_device(pdev))) { |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 316 | printk(KERN_WARNING "i2o: couldn't enable device %s\n", |
| 317 | pci_name(pdev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return rc; |
| 319 | } |
| 320 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 322 | printk(KERN_WARNING "i2o: no suitable DMA found for %s\n", |
| 323 | pci_name(pdev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | rc = -ENODEV; |
| 325 | goto disable; |
| 326 | } |
| 327 | |
| 328 | pci_set_master(pdev); |
| 329 | |
| 330 | c = i2o_iop_alloc(); |
| 331 | if (IS_ERR(c)) { |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 332 | printk(KERN_ERR "i2o: couldn't allocate memory for %s\n", |
| 333 | pci_name(pdev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | rc = PTR_ERR(c); |
| 335 | goto disable; |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 336 | } else |
| 337 | printk(KERN_INFO "%s: controller found (%s)\n", c->name, |
| 338 | pci_name(pdev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
| 340 | c->pdev = pdev; |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 341 | c->device.parent = get_device(&pdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | /* Cards that fall apart if you hit them with large I/O loads... */ |
| 344 | if (pdev->vendor == PCI_VENDOR_ID_NCR && pdev->device == 0x0630) { |
| 345 | c->short_req = 1; |
| 346 | printk(KERN_INFO "%s: Symbios FC920 workarounds activated.\n", |
| 347 | c->name); |
| 348 | } |
| 349 | |
| 350 | if (pdev->subsystem_vendor == PCI_VENDOR_ID_PROMISE) { |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 351 | /* |
| 352 | * Expose the ship behind i960 for initialization, or it will |
| 353 | * failed |
| 354 | */ |
| 355 | i960 = |
| 356 | pci_find_slot(c->pdev->bus->number, |
| 357 | PCI_DEVFN(PCI_SLOT(c->pdev->devfn), 0)); |
| 358 | |
| 359 | if (i960) |
| 360 | pci_write_config_word(i960, 0x42, 0); |
| 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | c->promise = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | } |
| 364 | |
Markus Lidel | b2aaee3 | 2005-06-23 22:02:19 -0700 | [diff] [blame^] | 365 | if (pdev->subsystem_vendor == PCI_VENDOR_ID_DPT) |
| 366 | c->adaptec = 1; |
| 367 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | /* Cards that go bananas if you quiesce them before you reset them. */ |
| 369 | if (pdev->vendor == PCI_VENDOR_ID_DPT) { |
| 370 | c->no_quiesce = 1; |
| 371 | if (pdev->device == 0xa511) |
| 372 | c->raptor = 1; |
Markus Lidel | b2aaee3 | 2005-06-23 22:02:19 -0700 | [diff] [blame^] | 373 | |
| 374 | if (pdev->subsystem_device == 0xc05a) { |
| 375 | c->limit_sectors = 1; |
| 376 | printk(KERN_INFO |
| 377 | "%s: limit sectors per request to %d\n", c->name, |
| 378 | I2O_MAX_SECTORS_LIMITED); |
| 379 | } |
| 380 | #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64 |
| 381 | if (sizeof(dma_addr_t) > 4) { |
| 382 | if (pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
| 383 | printk(KERN_INFO "%s: 64-bit DMA unavailable\n", |
| 384 | c->name); |
| 385 | else { |
| 386 | c->pae_support = 1; |
| 387 | printk(KERN_INFO "%s: using 64-bit DMA\n", |
| 388 | c->name); |
| 389 | } |
| 390 | } |
| 391 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | if ((rc = i2o_pci_alloc(c))) { |
| 395 | printk(KERN_ERR "%s: DMA / IO allocation for I2O controller " |
| 396 | " failed\n", c->name); |
| 397 | goto free_controller; |
| 398 | } |
| 399 | |
| 400 | if (i2o_pci_irq_enable(c)) { |
| 401 | printk(KERN_ERR "%s: unable to enable interrupts for I2O " |
| 402 | "controller\n", c->name); |
| 403 | goto free_pci; |
| 404 | } |
| 405 | |
| 406 | if ((rc = i2o_iop_add(c))) |
| 407 | goto uninstall; |
| 408 | |
Markus Lidel | 61fbfa8 | 2005-06-23 22:02:11 -0700 | [diff] [blame] | 409 | if (i960) |
| 410 | pci_write_config_word(i960, 0x42, 0x03ff); |
| 411 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 412 | get_device(&c->device); |
| 413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | return 0; |
| 415 | |
| 416 | uninstall: |
| 417 | i2o_pci_irq_disable(c); |
| 418 | |
| 419 | free_pci: |
| 420 | i2o_pci_free(c); |
| 421 | |
| 422 | free_controller: |
| 423 | i2o_iop_free(c); |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 424 | put_device(c->device.parent); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
| 426 | disable: |
| 427 | pci_disable_device(pdev); |
| 428 | |
| 429 | return rc; |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * i2o_pci_remove - Removes a I2O controller from the system |
| 434 | * pdev: I2O controller which should be removed |
| 435 | * |
| 436 | * Reset the I2O controller, disable interrupts and remove all allocated |
| 437 | * resources. |
| 438 | */ |
| 439 | static void __devexit i2o_pci_remove(struct pci_dev *pdev) |
| 440 | { |
| 441 | struct i2o_controller *c; |
| 442 | c = pci_get_drvdata(pdev); |
| 443 | |
| 444 | i2o_iop_remove(c); |
| 445 | i2o_pci_irq_disable(c); |
| 446 | i2o_pci_free(c); |
| 447 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 448 | pci_disable_device(pdev); |
| 449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | printk(KERN_INFO "%s: Controller removed.\n", c->name); |
| 451 | |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 452 | put_device(c->device.parent); |
| 453 | put_device(&c->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | }; |
| 455 | |
| 456 | /* PCI driver for I2O controller */ |
| 457 | static struct pci_driver i2o_pci_driver = { |
Markus Lidel | f88e119 | 2005-06-23 22:02:14 -0700 | [diff] [blame] | 458 | .name = "PCI_I2O", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | .id_table = i2o_pci_ids, |
| 460 | .probe = i2o_pci_probe, |
| 461 | .remove = __devexit_p(i2o_pci_remove), |
| 462 | }; |
| 463 | |
| 464 | /** |
| 465 | * i2o_pci_init - registers I2O PCI driver in PCI subsystem |
| 466 | * |
| 467 | * Returns > 0 on success or negative error code on failure. |
| 468 | */ |
| 469 | int __init i2o_pci_init(void) |
| 470 | { |
| 471 | return pci_register_driver(&i2o_pci_driver); |
| 472 | }; |
| 473 | |
| 474 | /** |
| 475 | * i2o_pci_exit - unregisters I2O PCI driver from PCI subsystem |
| 476 | */ |
| 477 | void __exit i2o_pci_exit(void) |
| 478 | { |
| 479 | pci_unregister_driver(&i2o_pci_driver); |
| 480 | }; |
| 481 | |
| 482 | EXPORT_SYMBOL(i2o_dma_realloc); |
| 483 | MODULE_DEVICE_TABLE(pci, i2o_pci_ids); |