Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 1 | /** |
| 2 | * tpci200.c |
| 3 | * |
| 4 | * driver for the TEWS TPCI-200 device |
| 5 | * Copyright (c) 2009 Nicolas Serafini, EIC2 SA |
| 6 | * Copyright (c) 2010,2011 Samuel Iglesias Gonsalvez <siglesia@cern.ch>, CERN |
| 7 | * Copyright (c) 2012 Samuel Iglesias Gonsalvez <siglesias@igalia.com>, Igalia |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU General Public License as published by the Free |
Samuel Iglesias Gonsalvez | b995069 | 2012-05-11 10:17:14 +0200 | [diff] [blame] | 11 | * Software Foundation; version 2 of the License. |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 12 | */ |
| 13 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 14 | #include <linux/module.h> |
| 15 | #include "tpci200.h" |
| 16 | |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 17 | static struct ipack_bus_ops tpci200_bus_ops; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 18 | |
| 19 | /* TPCI200 controls registers */ |
| 20 | static int control_reg[] = { |
| 21 | TPCI200_CONTROL_A_REG, |
| 22 | TPCI200_CONTROL_B_REG, |
| 23 | TPCI200_CONTROL_C_REG, |
| 24 | TPCI200_CONTROL_D_REG |
| 25 | }; |
| 26 | |
| 27 | /* Linked list to save the registered devices */ |
| 28 | static LIST_HEAD(tpci200_list); |
| 29 | |
| 30 | static int tpci200_slot_unregister(struct ipack_device *dev); |
| 31 | |
| 32 | static struct tpci200_board *check_slot(struct ipack_device *dev) |
| 33 | { |
| 34 | struct tpci200_board *tpci200; |
| 35 | int found = 0; |
| 36 | |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 37 | if (dev == NULL) |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 38 | return NULL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 39 | |
| 40 | list_for_each_entry(tpci200, &tpci200_list, list) { |
| 41 | if (tpci200->number == dev->bus_nr) { |
| 42 | found = 1; |
| 43 | break; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | if (!found) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 48 | dev_err(&dev->dev, "Carrier not found\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 49 | return NULL; |
| 50 | } |
| 51 | |
| 52 | if (dev->slot >= TPCI200_NB_SLOT) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 53 | dev_info(&dev->dev, |
| 54 | "Slot [%d:%d] doesn't exist! Last tpci200 slot is %d.\n", |
| 55 | dev->bus_nr, dev->slot, TPCI200_NB_SLOT-1); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 56 | return NULL; |
| 57 | } |
| 58 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 59 | return tpci200; |
| 60 | } |
| 61 | |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 62 | static inline unsigned char __tpci200_read8(void __iomem *address, |
| 63 | unsigned long offset) |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 64 | { |
| 65 | return ioread8(address + (offset^1)); |
| 66 | } |
| 67 | |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 68 | static inline unsigned short __tpci200_read16(void __iomem *address, |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 69 | unsigned long offset) |
| 70 | { |
| 71 | return ioread16(address + offset); |
| 72 | } |
| 73 | |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 74 | static inline unsigned int __tpci200_read32(void __iomem *address, |
| 75 | unsigned long offset) |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 76 | { |
| 77 | return swahw32(ioread32(address + offset)); |
| 78 | } |
| 79 | |
| 80 | static inline void __tpci200_write8(unsigned char value, |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 81 | void __iomem *address, unsigned long offset) |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 82 | { |
| 83 | iowrite8(value, address+(offset^1)); |
| 84 | } |
| 85 | |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 86 | static inline void __tpci200_write16(unsigned short value, |
| 87 | void __iomem *address, |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 88 | unsigned long offset) |
| 89 | { |
| 90 | iowrite16(value, address+offset); |
| 91 | } |
| 92 | |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 93 | static inline void __tpci200_write32(unsigned int value, |
| 94 | void __iomem *address, |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 95 | unsigned long offset) |
| 96 | { |
| 97 | iowrite32(swahw32(value), address+offset); |
| 98 | } |
| 99 | |
| 100 | static struct ipack_addr_space *get_slot_address_space(struct ipack_device *dev, |
| 101 | int space) |
| 102 | { |
| 103 | struct ipack_addr_space *addr; |
| 104 | |
| 105 | switch (space) { |
| 106 | case IPACK_IO_SPACE: |
| 107 | addr = &dev->io_space; |
| 108 | break; |
| 109 | case IPACK_ID_SPACE: |
| 110 | addr = &dev->id_space; |
| 111 | break; |
| 112 | case IPACK_MEM_SPACE: |
| 113 | addr = &dev->mem_space; |
| 114 | break; |
| 115 | default: |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 116 | dev_err(&dev->dev, |
| 117 | "Slot [%d:%d] space number %d doesn't exist !\n", |
| 118 | dev->bus_nr, dev->slot, space); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 119 | return NULL; |
| 120 | break; |
| 121 | } |
| 122 | |
| 123 | if ((addr->size == 0) || (addr->address == NULL)) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 124 | dev_err(&dev->dev, "Error, slot space not mapped !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 125 | return NULL; |
| 126 | } |
| 127 | |
| 128 | return addr; |
| 129 | } |
| 130 | |
| 131 | static int tpci200_read8(struct ipack_device *dev, int space, |
| 132 | unsigned long offset, unsigned char *value) |
| 133 | { |
| 134 | struct ipack_addr_space *addr; |
| 135 | struct tpci200_board *tpci200; |
| 136 | |
| 137 | tpci200 = check_slot(dev); |
| 138 | if (tpci200 == NULL) |
| 139 | return -EINVAL; |
| 140 | |
| 141 | addr = get_slot_address_space(dev, space); |
| 142 | if (addr == NULL) |
| 143 | return -EINVAL; |
| 144 | |
| 145 | if (offset >= addr->size) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 146 | dev_err(&dev->dev, "Error, slot space offset error !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 147 | return -EFAULT; |
| 148 | } |
| 149 | |
| 150 | *value = __tpci200_read8(addr->address, offset); |
| 151 | |
| 152 | return 0; |
| 153 | } |
| 154 | |
| 155 | static int tpci200_read16(struct ipack_device *dev, int space, |
| 156 | unsigned long offset, unsigned short *value) |
| 157 | { |
| 158 | struct ipack_addr_space *addr; |
| 159 | struct tpci200_board *tpci200; |
| 160 | |
| 161 | tpci200 = check_slot(dev); |
| 162 | if (tpci200 == NULL) |
| 163 | return -EINVAL; |
| 164 | |
| 165 | addr = get_slot_address_space(dev, space); |
| 166 | if (addr == NULL) |
| 167 | return -EINVAL; |
| 168 | |
| 169 | if ((offset+2) >= addr->size) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 170 | dev_err(&dev->dev, "Error, slot space offset error !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 171 | return -EFAULT; |
| 172 | } |
| 173 | *value = __tpci200_read16(addr->address, offset); |
| 174 | |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | static int tpci200_read32(struct ipack_device *dev, int space, |
| 179 | unsigned long offset, unsigned int *value) |
| 180 | { |
| 181 | struct ipack_addr_space *addr; |
| 182 | struct tpci200_board *tpci200; |
| 183 | |
| 184 | tpci200 = check_slot(dev); |
| 185 | if (tpci200 == NULL) |
| 186 | return -EINVAL; |
| 187 | |
| 188 | addr = get_slot_address_space(dev, space); |
| 189 | if (addr == NULL) |
| 190 | return -EINVAL; |
| 191 | |
| 192 | if ((offset+4) >= addr->size) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 193 | dev_err(&dev->dev, "Error, slot space offset error !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 194 | return -EFAULT; |
| 195 | } |
| 196 | |
| 197 | *value = __tpci200_read32(addr->address, offset); |
| 198 | |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | static int tpci200_write8(struct ipack_device *dev, int space, |
| 203 | unsigned long offset, unsigned char value) |
| 204 | { |
| 205 | struct ipack_addr_space *addr; |
| 206 | struct tpci200_board *tpci200; |
| 207 | |
| 208 | tpci200 = check_slot(dev); |
| 209 | if (tpci200 == NULL) |
| 210 | return -EINVAL; |
| 211 | |
| 212 | addr = get_slot_address_space(dev, space); |
| 213 | if (addr == NULL) |
| 214 | return -EINVAL; |
| 215 | |
| 216 | if (offset >= addr->size) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 217 | dev_err(&dev->dev, "Error, slot space offset error !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 218 | return -EFAULT; |
| 219 | } |
| 220 | |
| 221 | __tpci200_write8(value, addr->address, offset); |
| 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | static int tpci200_write16(struct ipack_device *dev, int space, |
| 227 | unsigned long offset, unsigned short value) |
| 228 | { |
| 229 | struct ipack_addr_space *addr; |
| 230 | struct tpci200_board *tpci200; |
| 231 | |
| 232 | tpci200 = check_slot(dev); |
| 233 | if (tpci200 == NULL) |
| 234 | return -EINVAL; |
| 235 | |
| 236 | addr = get_slot_address_space(dev, space); |
| 237 | if (addr == NULL) |
| 238 | return -EINVAL; |
| 239 | |
| 240 | if ((offset+2) >= addr->size) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 241 | dev_err(&dev->dev, "Error, slot space offset error !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 242 | return -EFAULT; |
| 243 | } |
| 244 | |
| 245 | __tpci200_write16(value, addr->address, offset); |
| 246 | |
| 247 | return 0; |
| 248 | } |
| 249 | |
| 250 | static int tpci200_write32(struct ipack_device *dev, int space, |
| 251 | unsigned long offset, unsigned int value) |
| 252 | { |
| 253 | struct ipack_addr_space *addr; |
| 254 | struct tpci200_board *tpci200; |
| 255 | |
| 256 | tpci200 = check_slot(dev); |
| 257 | if (tpci200 == NULL) |
| 258 | return -EINVAL; |
| 259 | |
| 260 | addr = get_slot_address_space(dev, space); |
| 261 | if (addr == NULL) |
| 262 | return -EINVAL; |
| 263 | |
| 264 | if ((offset+4) >= addr->size) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 265 | dev_err(&dev->dev, "Error, slot space offset error !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 266 | return -EFAULT; |
| 267 | } |
| 268 | |
| 269 | __tpci200_write32(value, addr->address, offset); |
| 270 | |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | static void tpci200_unregister(struct tpci200_board *tpci200) |
| 275 | { |
| 276 | int i; |
| 277 | |
| 278 | free_irq(tpci200->info->pdev->irq, (void *) tpci200); |
| 279 | |
| 280 | pci_iounmap(tpci200->info->pdev, tpci200->info->interface_regs); |
| 281 | pci_iounmap(tpci200->info->pdev, tpci200->info->ioidint_space); |
| 282 | pci_iounmap(tpci200->info->pdev, tpci200->info->mem8_space); |
| 283 | |
| 284 | pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR); |
| 285 | pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR); |
| 286 | pci_release_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR); |
| 287 | |
| 288 | pci_disable_device(tpci200->info->pdev); |
| 289 | pci_dev_put(tpci200->info->pdev); |
| 290 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 291 | for (i = 0; i < TPCI200_NB_SLOT; i++) { |
| 292 | tpci200->slots[i].io_phys.address = NULL; |
| 293 | tpci200->slots[i].io_phys.size = 0; |
| 294 | tpci200->slots[i].id_phys.address = NULL; |
| 295 | tpci200->slots[i].id_phys.size = 0; |
| 296 | tpci200->slots[i].mem_phys.address = NULL; |
| 297 | tpci200->slots[i].mem_phys.size = 0; |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | static irqreturn_t tpci200_interrupt(int irq, void *dev_id) |
| 302 | { |
| 303 | struct tpci200_board *tpci200 = (struct tpci200_board *) dev_id; |
| 304 | int i; |
| 305 | unsigned long flags; |
| 306 | unsigned short status_reg, reg_value; |
| 307 | unsigned short unhandled_ints = 0; |
| 308 | irqreturn_t ret = IRQ_NONE; |
| 309 | |
| 310 | spin_lock_irqsave(&tpci200->info->access_lock, flags); |
| 311 | |
| 312 | /* Read status register */ |
Samuel Iglesias Gonsalvez | dd8a95e | 2012-05-18 11:10:08 +0200 | [diff] [blame] | 313 | status_reg = readw(tpci200->info->interface_regs + |
| 314 | TPCI200_STATUS_REG); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 315 | |
| 316 | if (status_reg & TPCI200_SLOT_INT_MASK) { |
| 317 | unhandled_ints = status_reg & TPCI200_SLOT_INT_MASK; |
| 318 | /* callback to the IRQ handler for the corresponding slot */ |
| 319 | for (i = 0; i < TPCI200_NB_SLOT; i++) { |
| 320 | if ((tpci200->slots[i].irq != NULL) && |
| 321 | (status_reg & ((TPCI200_A_INT0 | TPCI200_A_INT1) << (2*i)))) { |
| 322 | |
| 323 | ret = tpci200->slots[i].irq->handler(tpci200->slots[i].irq->arg); |
| 324 | |
| 325 | /* Dummy reads */ |
Samuel Iglesias Gonsalvez | dd8a95e | 2012-05-18 11:10:08 +0200 | [diff] [blame] | 326 | readw(tpci200->slots[i].dev->io_space.address + |
| 327 | 0xC0); |
| 328 | readw(tpci200->slots[i].dev->io_space.address + |
| 329 | 0xC2); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 330 | |
| 331 | unhandled_ints &= ~(((TPCI200_A_INT0 | TPCI200_A_INT1) << (2*i))); |
| 332 | } |
| 333 | } |
| 334 | } |
| 335 | /* Interrupt not handled are disabled */ |
| 336 | if (unhandled_ints) { |
| 337 | for (i = 0; i < TPCI200_NB_SLOT; i++) { |
| 338 | if (unhandled_ints & ((TPCI200_INT0_EN | TPCI200_INT1_EN) << (2*i))) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 339 | dev_info(&tpci200->slots[i].dev->dev, |
| 340 | "No registered ISR for slot [%d:%d]!. IRQ will be disabled.\n", |
| 341 | tpci200->number, i); |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 342 | reg_value = readw( |
Samuel Iglesias Gonsalvez | dd8a95e | 2012-05-18 11:10:08 +0200 | [diff] [blame] | 343 | tpci200->info->interface_regs + |
| 344 | control_reg[i]); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 345 | reg_value &= |
| 346 | ~(TPCI200_INT0_EN | TPCI200_INT1_EN); |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 347 | writew(reg_value, |
Samuel Iglesias Gonsalvez | dd8a95e | 2012-05-18 11:10:08 +0200 | [diff] [blame] | 348 | (tpci200->info->interface_regs + |
| 349 | control_reg[i])); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 350 | } |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | spin_unlock_irqrestore(&tpci200->info->access_lock, flags); |
| 355 | return ret; |
| 356 | } |
| 357 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 358 | static int tpci200_register(struct tpci200_board *tpci200) |
| 359 | { |
Samuel Iglesias Gonsalvez | 862fe87 | 2012-05-23 15:54:40 +0200 | [diff] [blame] | 360 | int i; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 361 | int res; |
| 362 | unsigned long ioidint_base; |
| 363 | unsigned long mem_base; |
| 364 | unsigned short slot_ctrl; |
| 365 | |
| 366 | if (pci_enable_device(tpci200->info->pdev) < 0) |
| 367 | return -ENODEV; |
| 368 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 369 | /* Request IP interface register (Bar 2) */ |
| 370 | res = pci_request_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR, |
| 371 | "Carrier IP interface registers"); |
| 372 | if (res) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 373 | dev_err(&tpci200->info->pdev->dev, |
| 374 | "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 2 !", |
| 375 | tpci200->info->pdev->bus->number, |
| 376 | tpci200->info->pdev->devfn); |
Samuel Iglesias Gonsalvez | 862fe87 | 2012-05-23 15:54:40 +0200 | [diff] [blame] | 377 | goto out_disable_pci; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | /* Request IO ID INT space (Bar 3) */ |
| 381 | res = pci_request_region(tpci200->info->pdev, |
| 382 | TPCI200_IO_ID_INT_SPACES_BAR, |
| 383 | "Carrier IO ID INT space"); |
| 384 | if (res) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 385 | dev_err(&tpci200->info->pdev->dev, |
| 386 | "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 3 !", |
| 387 | tpci200->info->pdev->bus->number, |
| 388 | tpci200->info->pdev->devfn); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 389 | goto out_release_ip_space; |
| 390 | } |
| 391 | |
| 392 | /* Request MEM space (Bar 4) */ |
| 393 | res = pci_request_region(tpci200->info->pdev, TPCI200_MEM8_SPACE_BAR, |
| 394 | "Carrier MEM space"); |
| 395 | if (res) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 396 | dev_err(&tpci200->info->pdev->dev, |
| 397 | "(bn 0x%X, sn 0x%X) failed to allocate PCI resource for BAR 4!", |
| 398 | tpci200->info->pdev->bus->number, |
| 399 | tpci200->info->pdev->devfn); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 400 | goto out_release_ioid_int_space; |
| 401 | } |
| 402 | |
| 403 | /* Map internal tpci200 driver user space */ |
| 404 | tpci200->info->interface_regs = |
| 405 | ioremap(pci_resource_start(tpci200->info->pdev, |
| 406 | TPCI200_IP_INTERFACE_BAR), |
| 407 | TPCI200_IFACE_SIZE); |
| 408 | tpci200->info->ioidint_space = |
| 409 | ioremap(pci_resource_start(tpci200->info->pdev, |
| 410 | TPCI200_IO_ID_INT_SPACES_BAR), |
| 411 | TPCI200_IOIDINT_SIZE); |
| 412 | tpci200->info->mem8_space = |
| 413 | ioremap(pci_resource_start(tpci200->info->pdev, |
| 414 | TPCI200_MEM8_SPACE_BAR), |
| 415 | TPCI200_MEM8_SIZE); |
| 416 | |
| 417 | spin_lock_init(&tpci200->info->access_lock); |
| 418 | ioidint_base = pci_resource_start(tpci200->info->pdev, |
| 419 | TPCI200_IO_ID_INT_SPACES_BAR); |
| 420 | mem_base = pci_resource_start(tpci200->info->pdev, |
| 421 | TPCI200_MEM8_SPACE_BAR); |
| 422 | |
| 423 | /* Set the default parameters of the slot |
| 424 | * INT0 disabled, level sensitive |
| 425 | * INT1 disabled, level sensitive |
| 426 | * error interrupt disabled |
| 427 | * timeout interrupt disabled |
| 428 | * recover time disabled |
| 429 | * clock rate 8 MHz |
| 430 | */ |
| 431 | slot_ctrl = 0; |
| 432 | |
| 433 | /* Set all slot physical address space */ |
| 434 | for (i = 0; i < TPCI200_NB_SLOT; i++) { |
| 435 | tpci200->slots[i].io_phys.address = |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 436 | (void __iomem *)ioidint_base + |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 437 | TPCI200_IO_SPACE_OFF + TPCI200_IO_SPACE_GAP*i; |
| 438 | tpci200->slots[i].io_phys.size = TPCI200_IO_SPACE_SIZE; |
| 439 | |
| 440 | tpci200->slots[i].id_phys.address = |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 441 | (void __iomem *)ioidint_base + |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 442 | TPCI200_ID_SPACE_OFF + TPCI200_ID_SPACE_GAP*i; |
| 443 | tpci200->slots[i].id_phys.size = TPCI200_ID_SPACE_SIZE; |
| 444 | |
| 445 | tpci200->slots[i].mem_phys.address = |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 446 | (void __iomem *)mem_base + TPCI200_MEM8_GAP*i; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 447 | tpci200->slots[i].mem_phys.size = TPCI200_MEM8_SIZE; |
| 448 | |
Samuel Iglesias Gonsalvez | dd8a95e | 2012-05-18 11:10:08 +0200 | [diff] [blame] | 449 | writew(slot_ctrl, (tpci200->info->interface_regs + |
| 450 | control_reg[i])); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | res = request_irq(tpci200->info->pdev->irq, |
| 454 | tpci200_interrupt, IRQF_SHARED, |
Samuel Iglesias Gonsalvez | c63a7dd | 2012-05-18 11:10:07 +0200 | [diff] [blame] | 455 | KBUILD_MODNAME, (void *) tpci200); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 456 | if (res) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 457 | dev_err(&tpci200->info->pdev->dev, |
| 458 | "(bn 0x%X, sn 0x%X) unable to register IRQ !", |
| 459 | tpci200->info->pdev->bus->number, |
| 460 | tpci200->info->pdev->devfn); |
Samuel Iglesias Gonsalvez | 862fe87 | 2012-05-23 15:54:40 +0200 | [diff] [blame] | 461 | goto out_release_ioid_int_space; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | return 0; |
| 465 | |
| 466 | out_release_ioid_int_space: |
| 467 | pci_release_region(tpci200->info->pdev, TPCI200_IO_ID_INT_SPACES_BAR); |
| 468 | out_release_ip_space: |
| 469 | pci_release_region(tpci200->info->pdev, TPCI200_IP_INTERFACE_BAR); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 470 | out_disable_pci: |
| 471 | pci_disable_device(tpci200->info->pdev); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 472 | return res; |
| 473 | } |
| 474 | |
| 475 | static int __tpci200_request_irq(struct tpci200_board *tpci200, |
| 476 | struct ipack_device *dev) |
| 477 | { |
| 478 | unsigned short slot_ctrl; |
| 479 | |
| 480 | /* Set the default parameters of the slot |
| 481 | * INT0 enabled, level sensitive |
| 482 | * INT1 enabled, level sensitive |
| 483 | * error interrupt disabled |
| 484 | * timeout interrupt disabled |
| 485 | * recover time disabled |
| 486 | * clock rate 8 MHz |
| 487 | */ |
| 488 | slot_ctrl = TPCI200_INT0_EN | TPCI200_INT1_EN; |
Samuel Iglesias Gonsalvez | dd8a95e | 2012-05-18 11:10:08 +0200 | [diff] [blame] | 489 | writew(slot_ctrl, (tpci200->info->interface_regs + |
| 490 | control_reg[dev->slot])); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 491 | |
| 492 | return 0; |
| 493 | } |
| 494 | |
| 495 | static void __tpci200_free_irq(struct tpci200_board *tpci200, |
| 496 | struct ipack_device *dev) |
| 497 | { |
| 498 | unsigned short slot_ctrl; |
| 499 | |
| 500 | /* Set the default parameters of the slot |
| 501 | * INT0 disabled, level sensitive |
| 502 | * INT1 disabled, level sensitive |
| 503 | * error interrupt disabled |
| 504 | * timeout interrupt disabled |
| 505 | * recover time disabled |
| 506 | * clock rate 8 MHz |
| 507 | */ |
| 508 | slot_ctrl = 0; |
Samuel Iglesias Gonsalvez | dd8a95e | 2012-05-18 11:10:08 +0200 | [diff] [blame] | 509 | writew(slot_ctrl, (tpci200->info->interface_regs + |
| 510 | control_reg[dev->slot])); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | static int tpci200_free_irq(struct ipack_device *dev) |
| 514 | { |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 515 | struct slot_irq *slot_irq; |
| 516 | struct tpci200_board *tpci200; |
| 517 | |
| 518 | tpci200 = check_slot(dev); |
Miguel Gómez | 7d3da09 | 2012-06-07 11:10:17 +0200 | [diff] [blame] | 519 | if (tpci200 == NULL) |
| 520 | return -EINVAL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 521 | |
Miguel Gómez | 7d3da09 | 2012-06-07 11:10:17 +0200 | [diff] [blame] | 522 | if (mutex_lock_interruptible(&tpci200->mutex)) |
| 523 | return -ERESTARTSYS; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 524 | |
| 525 | if (tpci200->slots[dev->slot].irq == NULL) { |
Miguel Gómez | 7d3da09 | 2012-06-07 11:10:17 +0200 | [diff] [blame] | 526 | mutex_unlock(&tpci200->mutex); |
| 527 | return -EINVAL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | __tpci200_free_irq(tpci200, dev); |
| 531 | slot_irq = tpci200->slots[dev->slot].irq; |
| 532 | tpci200->slots[dev->slot].irq = NULL; |
| 533 | kfree(slot_irq); |
| 534 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 535 | mutex_unlock(&tpci200->mutex); |
Miguel Gómez | 7d3da09 | 2012-06-07 11:10:17 +0200 | [diff] [blame] | 536 | return 0; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | static int tpci200_slot_unmap_space(struct ipack_device *dev, int space) |
| 540 | { |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 541 | struct ipack_addr_space *virt_addr_space; |
| 542 | struct tpci200_board *tpci200; |
| 543 | |
| 544 | tpci200 = check_slot(dev); |
Samuel Iglesias Gonsalvez | 38f1c53 | 2012-05-23 15:54:42 +0200 | [diff] [blame] | 545 | if (tpci200 == NULL) |
| 546 | return -EINVAL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 547 | |
Samuel Iglesias Gonsalvez | 38f1c53 | 2012-05-23 15:54:42 +0200 | [diff] [blame] | 548 | if (mutex_lock_interruptible(&tpci200->mutex)) |
| 549 | return -ERESTARTSYS; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 550 | |
| 551 | switch (space) { |
| 552 | case IPACK_IO_SPACE: |
| 553 | if (dev->io_space.address == NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 554 | dev_info(&dev->dev, |
| 555 | "Slot [%d:%d] IO space not mapped !\n", |
| 556 | dev->bus_nr, dev->slot); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 557 | goto out_unlock; |
| 558 | } |
| 559 | virt_addr_space = &dev->io_space; |
| 560 | break; |
| 561 | case IPACK_ID_SPACE: |
| 562 | if (dev->id_space.address == NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 563 | dev_info(&dev->dev, |
| 564 | "Slot [%d:%d] ID space not mapped !\n", |
| 565 | dev->bus_nr, dev->slot); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 566 | goto out_unlock; |
| 567 | } |
| 568 | virt_addr_space = &dev->id_space; |
| 569 | break; |
| 570 | case IPACK_MEM_SPACE: |
| 571 | if (dev->mem_space.address == NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 572 | dev_info(&dev->dev, |
| 573 | "Slot [%d:%d] MEM space not mapped !\n", |
| 574 | dev->bus_nr, dev->slot); |
Samuel Iglesias Gonsalvez | e149ef8 | 2012-05-23 15:54:45 +0200 | [diff] [blame] | 575 | goto out_unlock; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 576 | } |
| 577 | virt_addr_space = &dev->mem_space; |
| 578 | break; |
| 579 | default: |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 580 | dev_err(&dev->dev, |
| 581 | "Slot [%d:%d] space number %d doesn't exist !\n", |
| 582 | dev->bus_nr, dev->slot, space); |
Samuel Iglesias Gonsalvez | 38f1c53 | 2012-05-23 15:54:42 +0200 | [diff] [blame] | 583 | mutex_unlock(&tpci200->mutex); |
| 584 | return -EINVAL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | iounmap(virt_addr_space->address); |
| 588 | |
| 589 | virt_addr_space->address = NULL; |
| 590 | virt_addr_space->size = 0; |
| 591 | out_unlock: |
| 592 | mutex_unlock(&tpci200->mutex); |
Samuel Iglesias Gonsalvez | 38f1c53 | 2012-05-23 15:54:42 +0200 | [diff] [blame] | 593 | return 0; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 594 | } |
| 595 | |
| 596 | static int tpci200_slot_unregister(struct ipack_device *dev) |
| 597 | { |
| 598 | struct tpci200_board *tpci200; |
| 599 | |
| 600 | if (dev == NULL) |
| 601 | return -ENODEV; |
| 602 | |
| 603 | tpci200 = check_slot(dev); |
| 604 | if (tpci200 == NULL) |
| 605 | return -EINVAL; |
| 606 | |
| 607 | tpci200_free_irq(dev); |
| 608 | |
| 609 | if (mutex_lock_interruptible(&tpci200->mutex)) |
| 610 | return -ERESTARTSYS; |
| 611 | |
| 612 | ipack_device_unregister(dev); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 613 | tpci200->slots[dev->slot].dev = NULL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 614 | mutex_unlock(&tpci200->mutex); |
| 615 | |
| 616 | return 0; |
| 617 | } |
| 618 | |
| 619 | static int tpci200_slot_map_space(struct ipack_device *dev, |
| 620 | unsigned int memory_size, int space) |
| 621 | { |
Samuel Iglesias Gonsalvez | 6ad0c48 | 2012-05-23 15:54:43 +0200 | [diff] [blame] | 622 | int res = 0; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 623 | unsigned int size_to_map; |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 624 | void __iomem *phys_address; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 625 | struct ipack_addr_space *virt_addr_space; |
| 626 | struct tpci200_board *tpci200; |
| 627 | |
| 628 | tpci200 = check_slot(dev); |
Miguel Gómez | 5e4be52 | 2012-06-07 10:24:51 +0200 | [diff] [blame] | 629 | if (tpci200 == NULL) |
| 630 | return -EINVAL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 631 | |
Miguel Gómez | 5e4be52 | 2012-06-07 10:24:51 +0200 | [diff] [blame] | 632 | if (mutex_lock_interruptible(&tpci200->mutex)) |
| 633 | return -ERESTARTSYS; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 634 | |
| 635 | switch (space) { |
| 636 | case IPACK_IO_SPACE: |
| 637 | if (dev->io_space.address != NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 638 | dev_err(&dev->dev, |
| 639 | "Slot [%d:%d] IO space already mapped !\n", |
| 640 | tpci200->number, dev->slot); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 641 | res = -EINVAL; |
| 642 | goto out_unlock; |
| 643 | } |
| 644 | virt_addr_space = &dev->io_space; |
| 645 | |
| 646 | phys_address = tpci200->slots[dev->slot].io_phys.address; |
| 647 | size_to_map = tpci200->slots[dev->slot].io_phys.size; |
| 648 | break; |
| 649 | case IPACK_ID_SPACE: |
| 650 | if (dev->id_space.address != NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 651 | dev_err(&dev->dev, |
| 652 | "Slot [%d:%d] ID space already mapped !\n", |
| 653 | tpci200->number, dev->slot); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 654 | res = -EINVAL; |
| 655 | goto out_unlock; |
| 656 | } |
| 657 | virt_addr_space = &dev->id_space; |
| 658 | |
| 659 | phys_address = tpci200->slots[dev->slot].id_phys.address; |
| 660 | size_to_map = tpci200->slots[dev->slot].id_phys.size; |
| 661 | break; |
| 662 | case IPACK_MEM_SPACE: |
| 663 | if (dev->mem_space.address != NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 664 | dev_err(&dev->dev, |
| 665 | "Slot [%d:%d] MEM space already mapped !\n", |
| 666 | tpci200->number, dev->slot); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 667 | res = -EINVAL; |
| 668 | goto out_unlock; |
| 669 | } |
| 670 | virt_addr_space = &dev->mem_space; |
| 671 | |
| 672 | if (memory_size > tpci200->slots[dev->slot].mem_phys.size) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 673 | dev_err(&dev->dev, |
| 674 | "Slot [%d:%d] request is 0x%X memory, only 0x%X available !\n", |
| 675 | dev->bus_nr, dev->slot, memory_size, |
| 676 | tpci200->slots[dev->slot].mem_phys.size); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 677 | res = -EINVAL; |
| 678 | goto out_unlock; |
| 679 | } |
| 680 | |
| 681 | phys_address = tpci200->slots[dev->slot].mem_phys.address; |
| 682 | size_to_map = memory_size; |
| 683 | break; |
| 684 | default: |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 685 | dev_err(&dev->dev, "Slot [%d:%d] space %d doesn't exist !\n", |
| 686 | tpci200->number, dev->slot, space); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 687 | res = -EINVAL; |
| 688 | goto out_unlock; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | virt_addr_space->size = size_to_map; |
| 692 | virt_addr_space->address = |
| 693 | ioremap((unsigned long)phys_address, size_to_map); |
| 694 | |
| 695 | out_unlock: |
| 696 | mutex_unlock(&tpci200->mutex); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 697 | return res; |
| 698 | } |
| 699 | |
| 700 | static int tpci200_request_irq(struct ipack_device *dev, int vector, |
| 701 | int (*handler)(void *), void *arg) |
| 702 | { |
| 703 | int res; |
| 704 | struct slot_irq *slot_irq; |
| 705 | struct tpci200_board *tpci200; |
| 706 | |
| 707 | tpci200 = check_slot(dev); |
Miguel Gómez | f7986a9 | 2012-06-07 10:24:53 +0200 | [diff] [blame] | 708 | if (tpci200 == NULL) |
| 709 | return -EINVAL; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 710 | |
Miguel Gómez | f7986a9 | 2012-06-07 10:24:53 +0200 | [diff] [blame] | 711 | if (mutex_lock_interruptible(&tpci200->mutex)) |
| 712 | return -ERESTARTSYS; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 713 | |
| 714 | if (tpci200->slots[dev->slot].irq != NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 715 | dev_err(&dev->dev, |
| 716 | "Slot [%d:%d] IRQ already registered !\n", dev->bus_nr, |
| 717 | dev->slot); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 718 | res = -EINVAL; |
| 719 | goto out_unlock; |
| 720 | } |
| 721 | |
| 722 | slot_irq = kzalloc(sizeof(struct slot_irq), GFP_KERNEL); |
| 723 | if (slot_irq == NULL) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 724 | dev_err(&dev->dev, |
| 725 | "Slot [%d:%d] unable to allocate memory for IRQ !\n", |
| 726 | dev->bus_nr, dev->slot); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 727 | res = -ENOMEM; |
| 728 | goto out_unlock; |
| 729 | } |
| 730 | |
| 731 | /* |
| 732 | * WARNING: Setup Interrupt Vector in the IndustryPack device |
| 733 | * before an IRQ request. |
| 734 | * Read the User Manual of your IndustryPack device to know |
| 735 | * where to write the vector in memory. |
| 736 | */ |
| 737 | slot_irq->vector = vector; |
| 738 | slot_irq->handler = handler; |
| 739 | slot_irq->arg = arg; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 740 | |
| 741 | tpci200->slots[dev->slot].irq = slot_irq; |
| 742 | res = __tpci200_request_irq(tpci200, dev); |
| 743 | |
| 744 | out_unlock: |
| 745 | mutex_unlock(&tpci200->mutex); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 746 | return res; |
| 747 | } |
| 748 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 749 | static void tpci200_uninstall(struct tpci200_board *tpci200) |
| 750 | { |
| 751 | int i; |
| 752 | |
| 753 | for (i = 0; i < TPCI200_NB_SLOT; i++) |
Samuel Iglesias Gonsalvez | 20cf700 | 2012-05-25 10:03:05 +0200 | [diff] [blame] | 754 | tpci200_slot_unregister(tpci200->slots[i].dev); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 755 | |
| 756 | tpci200_unregister(tpci200); |
| 757 | kfree(tpci200->slots); |
| 758 | } |
| 759 | |
Samuel Iglesias Gonsalvez | 5a81b4a | 2012-05-14 12:41:25 +0200 | [diff] [blame] | 760 | static struct ipack_bus_ops tpci200_bus_ops = { |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 761 | .map_space = tpci200_slot_map_space, |
| 762 | .unmap_space = tpci200_slot_unmap_space, |
| 763 | .request_irq = tpci200_request_irq, |
| 764 | .free_irq = tpci200_free_irq, |
| 765 | .read8 = tpci200_read8, |
| 766 | .read16 = tpci200_read16, |
| 767 | .read32 = tpci200_read32, |
| 768 | .write8 = tpci200_write8, |
| 769 | .write16 = tpci200_write16, |
| 770 | .write32 = tpci200_write32, |
| 771 | .remove_device = tpci200_slot_unregister, |
| 772 | }; |
| 773 | |
| 774 | static int tpci200_install(struct tpci200_board *tpci200) |
| 775 | { |
| 776 | int res; |
| 777 | |
| 778 | tpci200->slots = kzalloc( |
| 779 | TPCI200_NB_SLOT * sizeof(struct tpci200_slot), GFP_KERNEL); |
Miguel Gómez | ec0ceb9 | 2012-06-07 10:24:54 +0200 | [diff] [blame^] | 780 | if (tpci200->slots == NULL) |
| 781 | return -ENOMEM; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 782 | |
| 783 | res = tpci200_register(tpci200); |
Miguel Gómez | ec0ceb9 | 2012-06-07 10:24:54 +0200 | [diff] [blame^] | 784 | if (res) { |
| 785 | kfree(tpci200->slots); |
| 786 | tpci200->slots = NULL; |
| 787 | return res; |
| 788 | } |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 789 | |
| 790 | mutex_init(&tpci200->mutex); |
| 791 | return 0; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | static int tpci200_pciprobe(struct pci_dev *pdev, |
| 795 | const struct pci_device_id *id) |
| 796 | { |
Samuel Iglesias Gonsalvez | 862fe87 | 2012-05-23 15:54:40 +0200 | [diff] [blame] | 797 | int ret, i; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 798 | struct tpci200_board *tpci200; |
| 799 | |
| 800 | tpci200 = kzalloc(sizeof(struct tpci200_board), GFP_KERNEL); |
| 801 | if (!tpci200) |
| 802 | return -ENOMEM; |
| 803 | |
| 804 | tpci200->info = kzalloc(sizeof(struct tpci200_infos), GFP_KERNEL); |
| 805 | if (!tpci200->info) { |
| 806 | kfree(tpci200); |
| 807 | return -ENOMEM; |
| 808 | } |
| 809 | |
| 810 | /* Save struct pci_dev pointer */ |
| 811 | tpci200->info->pdev = pdev; |
| 812 | tpci200->info->id_table = (struct pci_device_id *)id; |
| 813 | |
| 814 | /* register the device and initialize it */ |
| 815 | ret = tpci200_install(tpci200); |
| 816 | if (ret) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 817 | dev_err(&pdev->dev, "Error during tpci200 install !\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 818 | kfree(tpci200->info); |
| 819 | kfree(tpci200); |
| 820 | return -ENODEV; |
| 821 | } |
| 822 | |
Samuel Iglesias Gonsalvez | ec44033 | 2012-05-18 11:10:05 +0200 | [diff] [blame] | 823 | /* Register the carrier in the industry pack bus driver */ |
| 824 | tpci200->info->ipack_bus = ipack_bus_register(&pdev->dev, |
| 825 | TPCI200_NB_SLOT, |
| 826 | &tpci200_bus_ops); |
| 827 | if (!tpci200->info->ipack_bus) { |
Samuel Iglesias Gonsalvez | a23d320 | 2012-05-25 13:08:12 +0200 | [diff] [blame] | 828 | dev_err(&pdev->dev, |
| 829 | "error registering the carrier on ipack driver\n"); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 830 | tpci200_uninstall(tpci200); |
| 831 | kfree(tpci200->info); |
| 832 | kfree(tpci200); |
| 833 | return -EFAULT; |
| 834 | } |
Samuel Iglesias Gonsalvez | ec44033 | 2012-05-18 11:10:05 +0200 | [diff] [blame] | 835 | |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 836 | /* save the bus number given by ipack to logging purpose */ |
Samuel Iglesias Gonsalvez | ec44033 | 2012-05-18 11:10:05 +0200 | [diff] [blame] | 837 | tpci200->number = tpci200->info->ipack_bus->bus_nr; |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 838 | dev_set_drvdata(&pdev->dev, tpci200); |
| 839 | /* add the registered device in an internal linked list */ |
| 840 | list_add_tail(&tpci200->list, &tpci200_list); |
Samuel Iglesias Gonsalvez | 862fe87 | 2012-05-23 15:54:40 +0200 | [diff] [blame] | 841 | |
| 842 | /* |
| 843 | * Give the same IRQ number as the slot number. |
| 844 | * The TPCI200 has assigned his own two IRQ by PCI bus driver |
| 845 | */ |
| 846 | for (i = 0; i < TPCI200_NB_SLOT; i++) |
| 847 | tpci200->slots[i].dev = |
| 848 | ipack_device_register(tpci200->info->ipack_bus, i, i); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 849 | return ret; |
| 850 | } |
| 851 | |
| 852 | static void __tpci200_pci_remove(struct tpci200_board *tpci200) |
| 853 | { |
| 854 | tpci200_uninstall(tpci200); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 855 | list_del(&tpci200->list); |
Samuel Iglesias Gonsalvez | ec44033 | 2012-05-18 11:10:05 +0200 | [diff] [blame] | 856 | ipack_bus_unregister(tpci200->info->ipack_bus); |
| 857 | kfree(tpci200->info); |
Samuel Iglesias Gonsalvez | 0eeca14 | 2012-05-09 15:27:20 +0200 | [diff] [blame] | 858 | kfree(tpci200); |
| 859 | } |
| 860 | |
| 861 | static void __devexit tpci200_pci_remove(struct pci_dev *dev) |
| 862 | { |
| 863 | struct tpci200_board *tpci200, *next; |
| 864 | |
| 865 | /* Search the registered device to uninstall it */ |
| 866 | list_for_each_entry_safe(tpci200, next, &tpci200_list, list) { |
| 867 | if (tpci200->info->pdev == dev) { |
| 868 | __tpci200_pci_remove(tpci200); |
| 869 | break; |
| 870 | } |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | static struct pci_device_id tpci200_idtable[2] = { |
| 875 | { TPCI200_VENDOR_ID, TPCI200_DEVICE_ID, TPCI200_SUBVENDOR_ID, |
| 876 | TPCI200_SUBDEVICE_ID }, |
| 877 | { 0, }, |
| 878 | }; |
| 879 | |
| 880 | static struct pci_driver tpci200_pci_drv = { |
| 881 | .name = "tpci200", |
| 882 | .id_table = tpci200_idtable, |
| 883 | .probe = tpci200_pciprobe, |
| 884 | .remove = __devexit_p(tpci200_pci_remove), |
| 885 | }; |
| 886 | |
| 887 | static int __init tpci200_drvr_init_module(void) |
| 888 | { |
| 889 | return pci_register_driver(&tpci200_pci_drv); |
| 890 | } |
| 891 | |
| 892 | static void __exit tpci200_drvr_exit_module(void) |
| 893 | { |
| 894 | struct tpci200_board *tpci200, *next; |
| 895 | |
| 896 | list_for_each_entry_safe(tpci200, next, &tpci200_list, list) |
| 897 | __tpci200_pci_remove(tpci200); |
| 898 | |
| 899 | pci_unregister_driver(&tpci200_pci_drv); |
| 900 | } |
| 901 | |
| 902 | MODULE_DESCRIPTION("TEWS TPCI-200 device driver"); |
| 903 | MODULE_LICENSE("GPL"); |
| 904 | module_init(tpci200_drvr_init_module); |
| 905 | module_exit(tpci200_drvr_exit_module); |