Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: divasmain.c,v 1.55.4.6 2005/02/09 19:28:20 armin Exp $ |
| 2 | * |
| 3 | * Low level driver for Eicon DIVA Server ISDN cards. |
| 4 | * |
| 5 | * Copyright 2000-2003 by Armin Schindler (mac@melware.de) |
| 6 | * Copyright 2000-2003 Cytronics & Melware (info@melware.de) |
| 7 | * |
| 8 | * This software may be used and distributed according to the terms |
| 9 | * of the GNU General Public License, incorporated herein by reference. |
| 10 | */ |
| 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/module.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <asm/uaccess.h> |
| 16 | #include <asm/io.h> |
| 17 | #include <linux/ioport.h> |
| 18 | #include <linux/workqueue.h> |
| 19 | #include <linux/pci.h> |
| 20 | #include <linux/smp_lock.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/list.h> |
| 23 | #include <linux/poll.h> |
| 24 | #include <linux/kmod.h> |
| 25 | |
| 26 | #include "platform.h" |
| 27 | #undef ID_MASK |
| 28 | #undef N_DATA |
| 29 | #include "pc.h" |
| 30 | #include "di_defs.h" |
| 31 | #include "divasync.h" |
| 32 | #include "diva.h" |
| 33 | #include "di.h" |
| 34 | #include "io.h" |
| 35 | #include "xdi_msg.h" |
| 36 | #include "xdi_adapter.h" |
| 37 | #include "xdi_vers.h" |
| 38 | #include "diva_dma.h" |
| 39 | #include "diva_pci.h" |
| 40 | |
| 41 | static char *main_revision = "$Revision: 1.55.4.6 $"; |
| 42 | |
| 43 | static int major; |
| 44 | |
| 45 | static int dbgmask; |
| 46 | |
| 47 | MODULE_DESCRIPTION("Kernel driver for Eicon DIVA Server cards"); |
| 48 | MODULE_AUTHOR("Cytronics & Melware, Eicon Networks"); |
| 49 | MODULE_LICENSE("GPL"); |
| 50 | |
| 51 | module_param(dbgmask, int, 0); |
| 52 | MODULE_PARM_DESC(dbgmask, "initial debug mask"); |
| 53 | |
| 54 | static char *DRIVERNAME = |
| 55 | "Eicon DIVA Server driver (http://www.melware.net)"; |
| 56 | static char *DRIVERLNAME = "divas"; |
| 57 | static char *DEVNAME = "Divas"; |
| 58 | char *DRIVERRELEASE_DIVAS = "2.0"; |
| 59 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 60 | extern irqreturn_t diva_os_irq_wrapper(int irq, void *context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | extern int create_divas_proc(void); |
| 62 | extern void remove_divas_proc(void); |
| 63 | extern void diva_get_vserial_number(PISDN_ADAPTER IoAdapter, char *buf); |
| 64 | extern int divasfunc_init(int dbgmask); |
| 65 | extern void divasfunc_exit(void); |
| 66 | |
| 67 | typedef struct _diva_os_thread_dpc { |
| 68 | struct tasklet_struct divas_task; |
| 69 | diva_os_soft_isr_t *psoft_isr; |
| 70 | } diva_os_thread_dpc_t; |
| 71 | |
| 72 | /* -------------------------------------------------------------------------- |
| 73 | PCI driver interface section |
| 74 | -------------------------------------------------------------------------- */ |
| 75 | /* |
| 76 | vendor, device Vendor and device ID to match (or PCI_ANY_ID) |
| 77 | subvendor, Subsystem vendor and device ID to match (or PCI_ANY_ID) |
| 78 | subdevice |
| 79 | class, Device class to match. The class_mask tells which bits |
| 80 | class_mask of the class are honored during the comparison. |
| 81 | driver_data Data private to the driver. |
| 82 | */ |
| 83 | |
| 84 | #if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2) |
| 85 | #define PCI_DEVICE_ID_EICON_MAESTRAP_2 0xE015 |
| 86 | #endif |
| 87 | |
| 88 | #if !defined(PCI_DEVICE_ID_EICON_4BRI_VOIP) |
| 89 | #define PCI_DEVICE_ID_EICON_4BRI_VOIP 0xE016 |
| 90 | #endif |
| 91 | |
| 92 | #if !defined(PCI_DEVICE_ID_EICON_4BRI_2_VOIP) |
| 93 | #define PCI_DEVICE_ID_EICON_4BRI_2_VOIP 0xE017 |
| 94 | #endif |
| 95 | |
| 96 | #if !defined(PCI_DEVICE_ID_EICON_BRI2M_2) |
| 97 | #define PCI_DEVICE_ID_EICON_BRI2M_2 0xE018 |
| 98 | #endif |
| 99 | |
| 100 | #if !defined(PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP) |
| 101 | #define PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP 0xE019 |
| 102 | #endif |
| 103 | |
| 104 | #if !defined(PCI_DEVICE_ID_EICON_2F) |
| 105 | #define PCI_DEVICE_ID_EICON_2F 0xE01A |
| 106 | #endif |
| 107 | |
| 108 | #if !defined(PCI_DEVICE_ID_EICON_BRI2M_2_VOIP) |
| 109 | #define PCI_DEVICE_ID_EICON_BRI2M_2_VOIP 0xE01B |
| 110 | #endif |
| 111 | |
| 112 | /* |
| 113 | This table should be sorted by PCI device ID |
| 114 | */ |
| 115 | static struct pci_device_id divas_pci_tbl[] = { |
| 116 | /* Diva Server BRI-2M PCI 0xE010 */ |
| 117 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRA, |
| 118 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_MAESTRA_PCI}, |
| 119 | /* Diva Server 4BRI-8M PCI 0xE012 */ |
| 120 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAQ, |
| 121 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_Q_8M_PCI}, |
| 122 | /* Diva Server 4BRI-8M 2.0 PCI 0xE013 */ |
| 123 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAQ_U, |
| 124 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_Q_8M_V2_PCI}, |
| 125 | /* Diva Server PRI-30M PCI 0xE014 */ |
| 126 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAP, |
| 127 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_P_30M_PCI}, |
| 128 | /* Diva Server PRI 2.0 adapter 0xE015 */ |
| 129 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2, |
| 130 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_P_30M_V2_PCI}, |
| 131 | /* Diva Server Voice 4BRI-8M PCI 0xE016 */ |
| 132 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_4BRI_VOIP, |
| 133 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_VOICE_Q_8M_PCI}, |
| 134 | /* Diva Server Voice 4BRI-8M 2.0 PCI 0xE017 */ |
| 135 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_4BRI_2_VOIP, |
| 136 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_VOICE_Q_8M_V2_PCI}, |
| 137 | /* Diva Server BRI-2M 2.0 PCI 0xE018 */ |
| 138 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_BRI2M_2, |
| 139 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_B_2M_V2_PCI}, |
| 140 | /* Diva Server Voice PRI 2.0 PCI 0xE019 */ |
| 141 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_MAESTRAP_2_VOIP, |
| 142 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
| 143 | CARDTYPE_DIVASRV_VOICE_P_30M_V2_PCI}, |
| 144 | /* Diva Server 2FX 0xE01A */ |
| 145 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_2F, |
| 146 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_B_2F_PCI}, |
| 147 | /* Diva Server Voice BRI-2M 2.0 PCI 0xE01B */ |
| 148 | {PCI_VENDOR_ID_EICON, PCI_DEVICE_ID_EICON_BRI2M_2_VOIP, |
| 149 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, CARDTYPE_DIVASRV_VOICE_B_2M_V2_PCI}, |
| 150 | {0,} /* 0 terminated list. */ |
| 151 | }; |
| 152 | MODULE_DEVICE_TABLE(pci, divas_pci_tbl); |
| 153 | |
| 154 | static int divas_init_one(struct pci_dev *pdev, |
| 155 | const struct pci_device_id *ent); |
| 156 | static void __devexit divas_remove_one(struct pci_dev *pdev); |
| 157 | |
| 158 | static struct pci_driver diva_pci_driver = { |
| 159 | .name = "divas", |
| 160 | .probe = divas_init_one, |
| 161 | .remove = __devexit_p(divas_remove_one), |
| 162 | .id_table = divas_pci_tbl, |
| 163 | }; |
| 164 | |
| 165 | /********************************************************* |
| 166 | ** little helper functions |
| 167 | *********************************************************/ |
| 168 | static char *getrev(const char *revision) |
| 169 | { |
| 170 | char *rev; |
| 171 | char *p; |
| 172 | if ((p = strchr(revision, ':'))) { |
| 173 | rev = p + 2; |
| 174 | p = strchr(rev, '$'); |
| 175 | *--p = 0; |
| 176 | } else |
| 177 | rev = "1.0"; |
| 178 | return rev; |
| 179 | } |
| 180 | |
| 181 | void diva_log_info(unsigned char *format, ...) |
| 182 | { |
| 183 | va_list args; |
| 184 | unsigned char line[160]; |
| 185 | |
| 186 | va_start(args, format); |
Alexey Dobriyan | 0b2dd13 | 2006-12-08 02:39:34 -0800 | [diff] [blame] | 187 | vsnprintf(line, sizeof(line), format, args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | va_end(args); |
| 189 | |
| 190 | printk(KERN_INFO "%s: %s\n", DRIVERLNAME, line); |
| 191 | } |
| 192 | |
| 193 | void divas_get_version(char *p) |
| 194 | { |
| 195 | char tmprev[32]; |
| 196 | |
| 197 | strcpy(tmprev, main_revision); |
| 198 | sprintf(p, "%s: %s(%s) %s(%s) major=%d\n", DRIVERLNAME, DRIVERRELEASE_DIVAS, |
| 199 | getrev(tmprev), diva_xdi_common_code_build, DIVA_BUILD, major); |
| 200 | } |
| 201 | |
| 202 | /* -------------------------------------------------------------------------- |
| 203 | PCI Bus services |
| 204 | -------------------------------------------------------------------------- */ |
| 205 | byte diva_os_get_pci_bus(void *pci_dev_handle) |
| 206 | { |
| 207 | struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle; |
| 208 | return ((byte) pdev->bus->number); |
| 209 | } |
| 210 | |
| 211 | byte diva_os_get_pci_func(void *pci_dev_handle) |
| 212 | { |
| 213 | struct pci_dev *pdev = (struct pci_dev *) pci_dev_handle; |
| 214 | return ((byte) pdev->devfn); |
| 215 | } |
| 216 | |
| 217 | unsigned long divasa_get_pci_irq(unsigned char bus, unsigned char func, |
| 218 | void *pci_dev_handle) |
| 219 | { |
| 220 | unsigned char irq = 0; |
| 221 | struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; |
| 222 | |
| 223 | irq = dev->irq; |
| 224 | |
| 225 | return ((unsigned long) irq); |
| 226 | } |
| 227 | |
| 228 | unsigned long divasa_get_pci_bar(unsigned char bus, unsigned char func, |
| 229 | int bar, void *pci_dev_handle) |
| 230 | { |
| 231 | unsigned long ret = 0; |
| 232 | struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; |
| 233 | |
| 234 | if (bar < 6) { |
| 235 | ret = dev->resource[bar].start; |
| 236 | } |
| 237 | |
| 238 | DBG_TRC(("GOT BAR[%d]=%08x", bar, ret)); |
| 239 | |
| 240 | { |
| 241 | unsigned long type = (ret & 0x00000001); |
| 242 | if (type & PCI_BASE_ADDRESS_SPACE_IO) { |
| 243 | DBG_TRC((" I/O")); |
| 244 | ret &= PCI_BASE_ADDRESS_IO_MASK; |
| 245 | } else { |
| 246 | DBG_TRC((" memory")); |
| 247 | ret &= PCI_BASE_ADDRESS_MEM_MASK; |
| 248 | } |
| 249 | DBG_TRC((" final=%08x", ret)); |
| 250 | } |
| 251 | |
| 252 | return (ret); |
| 253 | } |
| 254 | |
| 255 | void PCIwrite(byte bus, byte func, int offset, void *data, int length, |
| 256 | void *pci_dev_handle) |
| 257 | { |
| 258 | struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; |
| 259 | |
| 260 | switch (length) { |
| 261 | case 1: /* byte */ |
| 262 | pci_write_config_byte(dev, offset, |
| 263 | *(unsigned char *) data); |
| 264 | break; |
| 265 | case 2: /* word */ |
| 266 | pci_write_config_word(dev, offset, |
| 267 | *(unsigned short *) data); |
| 268 | break; |
| 269 | case 4: /* dword */ |
| 270 | pci_write_config_dword(dev, offset, |
| 271 | *(unsigned int *) data); |
| 272 | break; |
| 273 | |
| 274 | default: /* buffer */ |
| 275 | if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */ |
| 276 | dword *p = (dword *) data; |
| 277 | length /= 4; |
| 278 | |
| 279 | while (length--) { |
| 280 | pci_write_config_dword(dev, offset, |
| 281 | *(unsigned int *) |
| 282 | p++); |
| 283 | } |
| 284 | } else { /* copy as byte stream */ |
| 285 | byte *p = (byte *) data; |
| 286 | |
| 287 | while (length--) { |
| 288 | pci_write_config_byte(dev, offset, |
| 289 | *(unsigned char *) |
| 290 | p++); |
| 291 | } |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | void PCIread(byte bus, byte func, int offset, void *data, int length, |
| 297 | void *pci_dev_handle) |
| 298 | { |
| 299 | struct pci_dev *dev = (struct pci_dev *) pci_dev_handle; |
| 300 | |
| 301 | switch (length) { |
| 302 | case 1: /* byte */ |
| 303 | pci_read_config_byte(dev, offset, (unsigned char *) data); |
| 304 | break; |
| 305 | case 2: /* word */ |
| 306 | pci_read_config_word(dev, offset, (unsigned short *) data); |
| 307 | break; |
| 308 | case 4: /* dword */ |
| 309 | pci_read_config_dword(dev, offset, (unsigned int *) data); |
| 310 | break; |
| 311 | |
| 312 | default: /* buffer */ |
| 313 | if (!(length % 4) && !(length & 0x03)) { /* Copy as dword */ |
| 314 | dword *p = (dword *) data; |
| 315 | length /= 4; |
| 316 | |
| 317 | while (length--) { |
| 318 | pci_read_config_dword(dev, offset, |
| 319 | (unsigned int *) |
| 320 | p++); |
| 321 | } |
| 322 | } else { /* copy as byte stream */ |
| 323 | byte *p = (byte *) data; |
| 324 | |
| 325 | while (length--) { |
| 326 | pci_read_config_byte(dev, offset, |
| 327 | (unsigned char *) |
| 328 | p++); |
| 329 | } |
| 330 | } |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | /* |
| 335 | Init map with DMA pages. It is not problem if some allocations fail - |
| 336 | the channels that will not get one DMA page will use standard PIO |
| 337 | interface |
| 338 | */ |
| 339 | static void *diva_pci_alloc_consistent(struct pci_dev *hwdev, |
| 340 | size_t size, |
| 341 | dma_addr_t * dma_handle, |
| 342 | void **addr_handle) |
| 343 | { |
| 344 | void *addr = pci_alloc_consistent(hwdev, size, dma_handle); |
| 345 | |
| 346 | *addr_handle = addr; |
| 347 | |
| 348 | return (addr); |
| 349 | } |
| 350 | |
| 351 | void diva_init_dma_map(void *hdev, |
| 352 | struct _diva_dma_map_entry **ppmap, int nentries) |
| 353 | { |
| 354 | struct pci_dev *pdev = (struct pci_dev *) hdev; |
| 355 | struct _diva_dma_map_entry *pmap = |
| 356 | diva_alloc_dma_map(hdev, nentries); |
| 357 | |
| 358 | if (pmap) { |
| 359 | int i; |
| 360 | dma_addr_t dma_handle; |
| 361 | void *cpu_addr; |
| 362 | void *addr_handle; |
| 363 | |
| 364 | for (i = 0; i < nentries; i++) { |
| 365 | if (!(cpu_addr = diva_pci_alloc_consistent(pdev, |
| 366 | PAGE_SIZE, |
| 367 | &dma_handle, |
| 368 | &addr_handle))) |
| 369 | { |
| 370 | break; |
| 371 | } |
| 372 | diva_init_dma_map_entry(pmap, i, cpu_addr, |
| 373 | (dword) dma_handle, |
| 374 | addr_handle); |
| 375 | DBG_TRC(("dma map alloc [%d]=(%08lx:%08x:%08lx)", |
| 376 | i, (unsigned long) cpu_addr, |
| 377 | (dword) dma_handle, |
| 378 | (unsigned long) addr_handle))} |
| 379 | } |
| 380 | |
| 381 | *ppmap = pmap; |
| 382 | } |
| 383 | |
| 384 | /* |
| 385 | Free all contained in the map entries and memory used by the map |
| 386 | Should be always called after adapter removal from DIDD array |
| 387 | */ |
| 388 | void diva_free_dma_map(void *hdev, struct _diva_dma_map_entry *pmap) |
| 389 | { |
| 390 | struct pci_dev *pdev = (struct pci_dev *) hdev; |
| 391 | int i; |
| 392 | dword phys_addr; |
| 393 | void *cpu_addr; |
| 394 | dma_addr_t dma_handle; |
| 395 | void *addr_handle; |
| 396 | |
| 397 | for (i = 0; (pmap != 0); i++) { |
| 398 | diva_get_dma_map_entry(pmap, i, &cpu_addr, &phys_addr); |
| 399 | if (!cpu_addr) { |
| 400 | break; |
| 401 | } |
| 402 | addr_handle = diva_get_entry_handle(pmap, i); |
| 403 | dma_handle = (dma_addr_t) phys_addr; |
| 404 | pci_free_consistent(pdev, PAGE_SIZE, addr_handle, |
| 405 | dma_handle); |
| 406 | DBG_TRC(("dma map free [%d]=(%08lx:%08x:%08lx)", i, |
| 407 | (unsigned long) cpu_addr, (dword) dma_handle, |
| 408 | (unsigned long) addr_handle)) |
| 409 | } |
| 410 | |
| 411 | diva_free_dma_mapping(pmap); |
| 412 | } |
| 413 | |
| 414 | |
| 415 | /********************************************************* |
| 416 | ** I/O port utilities |
| 417 | *********************************************************/ |
| 418 | |
| 419 | int |
| 420 | diva_os_register_io_port(void *adapter, int on, unsigned long port, |
| 421 | unsigned long length, const char *name, int id) |
| 422 | { |
| 423 | if (on) { |
| 424 | if (!request_region(port, length, name)) { |
| 425 | DBG_ERR(("A: I/O: can't register port=%08x", port)) |
| 426 | return (-1); |
| 427 | } |
| 428 | } else { |
| 429 | release_region(port, length); |
| 430 | } |
| 431 | return (0); |
| 432 | } |
| 433 | |
| 434 | void __iomem *divasa_remap_pci_bar(diva_os_xdi_adapter_t *a, int id, unsigned long bar, unsigned long area_length) |
| 435 | { |
| 436 | void __iomem *ret = ioremap(bar, area_length); |
| 437 | DBG_TRC(("remap(%08x)->%p", bar, ret)); |
| 438 | return (ret); |
| 439 | } |
| 440 | |
| 441 | void divasa_unmap_pci_bar(void __iomem *bar) |
| 442 | { |
| 443 | if (bar) { |
| 444 | iounmap(bar); |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /********************************************************* |
| 449 | ** I/O port access |
| 450 | *********************************************************/ |
| 451 | byte __inline__ inpp(void __iomem *addr) |
| 452 | { |
| 453 | return (inb((unsigned long) addr)); |
| 454 | } |
| 455 | |
| 456 | word __inline__ inppw(void __iomem *addr) |
| 457 | { |
| 458 | return (inw((unsigned long) addr)); |
| 459 | } |
| 460 | |
| 461 | void __inline__ inppw_buffer(void __iomem *addr, void *P, int length) |
| 462 | { |
| 463 | insw((unsigned long) addr, (word *) P, length >> 1); |
| 464 | } |
| 465 | |
| 466 | void __inline__ outppw_buffer(void __iomem *addr, void *P, int length) |
| 467 | { |
| 468 | outsw((unsigned long) addr, (word *) P, length >> 1); |
| 469 | } |
| 470 | |
| 471 | void __inline__ outppw(void __iomem *addr, word w) |
| 472 | { |
| 473 | outw(w, (unsigned long) addr); |
| 474 | } |
| 475 | |
| 476 | void __inline__ outpp(void __iomem *addr, word p) |
| 477 | { |
| 478 | outb(p, (unsigned long) addr); |
| 479 | } |
| 480 | |
| 481 | /* -------------------------------------------------------------------------- |
| 482 | IRQ request / remove |
| 483 | -------------------------------------------------------------------------- */ |
| 484 | int diva_os_register_irq(void *context, byte irq, const char *name) |
| 485 | { |
| 486 | int result = request_irq(irq, diva_os_irq_wrapper, |
Thomas Gleixner | 9ba02be | 2006-07-01 19:29:36 -0700 | [diff] [blame] | 487 | IRQF_DISABLED | IRQF_SHARED, name, context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | return (result); |
| 489 | } |
| 490 | |
| 491 | void diva_os_remove_irq(void *context, byte irq) |
| 492 | { |
| 493 | free_irq(irq, context); |
| 494 | } |
| 495 | |
| 496 | /* -------------------------------------------------------------------------- |
| 497 | DPC framework implementation |
| 498 | -------------------------------------------------------------------------- */ |
| 499 | static void diva_os_dpc_proc(unsigned long context) |
| 500 | { |
| 501 | diva_os_thread_dpc_t *psoft_isr = (diva_os_thread_dpc_t *) context; |
| 502 | diva_os_soft_isr_t *pisr = psoft_isr->psoft_isr; |
| 503 | |
| 504 | (*(pisr->callback)) (pisr, pisr->callback_context); |
| 505 | } |
| 506 | |
| 507 | int diva_os_initialize_soft_isr(diva_os_soft_isr_t * psoft_isr, |
| 508 | diva_os_soft_isr_callback_t callback, |
| 509 | void *callback_context) |
| 510 | { |
| 511 | diva_os_thread_dpc_t *pdpc; |
| 512 | |
| 513 | pdpc = (diva_os_thread_dpc_t *) diva_os_malloc(0, sizeof(*pdpc)); |
| 514 | if (!(psoft_isr->object = pdpc)) { |
| 515 | return (-1); |
| 516 | } |
| 517 | memset(pdpc, 0x00, sizeof(*pdpc)); |
| 518 | psoft_isr->callback = callback; |
| 519 | psoft_isr->callback_context = callback_context; |
| 520 | pdpc->psoft_isr = psoft_isr; |
| 521 | tasklet_init(&pdpc->divas_task, diva_os_dpc_proc, (unsigned long)pdpc); |
| 522 | |
| 523 | return (0); |
| 524 | } |
| 525 | |
| 526 | int diva_os_schedule_soft_isr(diva_os_soft_isr_t * psoft_isr) |
| 527 | { |
| 528 | if (psoft_isr && psoft_isr->object) { |
| 529 | diva_os_thread_dpc_t *pdpc = |
| 530 | (diva_os_thread_dpc_t *) psoft_isr->object; |
| 531 | |
| 532 | tasklet_schedule(&pdpc->divas_task); |
| 533 | } |
| 534 | |
| 535 | return (1); |
| 536 | } |
| 537 | |
| 538 | int diva_os_cancel_soft_isr(diva_os_soft_isr_t * psoft_isr) |
| 539 | { |
| 540 | return (0); |
| 541 | } |
| 542 | |
| 543 | void diva_os_remove_soft_isr(diva_os_soft_isr_t * psoft_isr) |
| 544 | { |
| 545 | if (psoft_isr && psoft_isr->object) { |
| 546 | diva_os_thread_dpc_t *pdpc = |
| 547 | (diva_os_thread_dpc_t *) psoft_isr->object; |
| 548 | void *mem; |
| 549 | |
| 550 | tasklet_kill(&pdpc->divas_task); |
| 551 | flush_scheduled_work(); |
| 552 | mem = psoft_isr->object; |
| 553 | psoft_isr->object = NULL; |
| 554 | diva_os_free(0, mem); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * kernel/user space copy functions |
| 560 | */ |
| 561 | static int |
| 562 | xdi_copy_to_user(void *os_handle, void __user *dst, const void *src, int length) |
| 563 | { |
| 564 | if (copy_to_user(dst, src, length)) { |
| 565 | return (-EFAULT); |
| 566 | } |
| 567 | return (length); |
| 568 | } |
| 569 | |
| 570 | static int |
| 571 | xdi_copy_from_user(void *os_handle, void *dst, const void __user *src, int length) |
| 572 | { |
| 573 | if (copy_from_user(dst, src, length)) { |
| 574 | return (-EFAULT); |
| 575 | } |
| 576 | return (length); |
| 577 | } |
| 578 | |
| 579 | /* |
| 580 | * device node operations |
| 581 | */ |
| 582 | static int divas_open(struct inode *inode, struct file *file) |
| 583 | { |
| 584 | return (0); |
| 585 | } |
| 586 | |
| 587 | static int divas_release(struct inode *inode, struct file *file) |
| 588 | { |
| 589 | if (file->private_data) { |
| 590 | diva_xdi_close_adapter(file->private_data, file); |
| 591 | } |
| 592 | return (0); |
| 593 | } |
| 594 | |
| 595 | static ssize_t divas_write(struct file *file, const char __user *buf, |
| 596 | size_t count, loff_t * ppos) |
| 597 | { |
| 598 | int ret = -EINVAL; |
| 599 | |
| 600 | if (!file->private_data) { |
| 601 | file->private_data = diva_xdi_open_adapter(file, buf, |
| 602 | count, |
| 603 | xdi_copy_from_user); |
| 604 | } |
| 605 | if (!file->private_data) { |
| 606 | return (-ENODEV); |
| 607 | } |
| 608 | |
| 609 | ret = diva_xdi_write(file->private_data, file, |
| 610 | buf, count, xdi_copy_from_user); |
| 611 | switch (ret) { |
| 612 | case -1: /* Message should be removed from rx mailbox first */ |
| 613 | ret = -EBUSY; |
| 614 | break; |
| 615 | case -2: /* invalid adapter was specified in this call */ |
| 616 | ret = -ENOMEM; |
| 617 | break; |
| 618 | case -3: |
| 619 | ret = -ENXIO; |
| 620 | break; |
| 621 | } |
| 622 | DBG_TRC(("write: ret %d", ret)); |
| 623 | return (ret); |
| 624 | } |
| 625 | |
| 626 | static ssize_t divas_read(struct file *file, char __user *buf, |
| 627 | size_t count, loff_t * ppos) |
| 628 | { |
| 629 | int ret = -EINVAL; |
| 630 | |
| 631 | if (!file->private_data) { |
| 632 | file->private_data = diva_xdi_open_adapter(file, buf, |
| 633 | count, |
| 634 | xdi_copy_from_user); |
| 635 | } |
| 636 | if (!file->private_data) { |
| 637 | return (-ENODEV); |
| 638 | } |
| 639 | |
| 640 | ret = diva_xdi_read(file->private_data, file, |
| 641 | buf, count, xdi_copy_to_user); |
| 642 | switch (ret) { |
| 643 | case -1: /* RX mailbox is empty */ |
| 644 | ret = -EAGAIN; |
| 645 | break; |
| 646 | case -2: /* no memory, mailbox was cleared, last command is failed */ |
| 647 | ret = -ENOMEM; |
| 648 | break; |
| 649 | case -3: /* can't copy to user, retry */ |
| 650 | ret = -EFAULT; |
| 651 | break; |
| 652 | } |
| 653 | DBG_TRC(("read: ret %d", ret)); |
| 654 | return (ret); |
| 655 | } |
| 656 | |
| 657 | static unsigned int divas_poll(struct file *file, poll_table * wait) |
| 658 | { |
| 659 | if (!file->private_data) { |
| 660 | return (POLLERR); |
| 661 | } |
| 662 | return (POLLIN | POLLRDNORM); |
| 663 | } |
| 664 | |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame] | 665 | static const struct file_operations divas_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | .owner = THIS_MODULE, |
| 667 | .llseek = no_llseek, |
| 668 | .read = divas_read, |
| 669 | .write = divas_write, |
| 670 | .poll = divas_poll, |
| 671 | .open = divas_open, |
| 672 | .release = divas_release |
| 673 | }; |
| 674 | |
| 675 | static void divas_unregister_chrdev(void) |
| 676 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | unregister_chrdev(major, DEVNAME); |
| 678 | } |
| 679 | |
| 680 | static int DIVA_INIT_FUNCTION divas_register_chrdev(void) |
| 681 | { |
| 682 | if ((major = register_chrdev(0, DEVNAME, &divas_fops)) < 0) |
| 683 | { |
| 684 | printk(KERN_ERR "%s: failed to create /dev entry.\n", |
| 685 | DRIVERLNAME); |
| 686 | return (0); |
| 687 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
| 689 | return (1); |
| 690 | } |
| 691 | |
| 692 | /* -------------------------------------------------------------------------- |
| 693 | PCI driver section |
| 694 | -------------------------------------------------------------------------- */ |
| 695 | static int __devinit divas_init_one(struct pci_dev *pdev, |
| 696 | const struct pci_device_id *ent) |
| 697 | { |
| 698 | void *pdiva = NULL; |
| 699 | u8 pci_latency; |
| 700 | u8 new_latency = 32; |
| 701 | |
| 702 | DBG_TRC(("%s bus: %08x fn: %08x insertion.\n", |
| 703 | CardProperties[ent->driver_data].Name, |
| 704 | pdev->bus->number, pdev->devfn)) |
| 705 | printk(KERN_INFO "%s: %s bus: %08x fn: %08x insertion.\n", |
| 706 | DRIVERLNAME, CardProperties[ent->driver_data].Name, |
| 707 | pdev->bus->number, pdev->devfn); |
| 708 | |
| 709 | if (pci_enable_device(pdev)) { |
| 710 | DBG_TRC(("%s: %s bus: %08x fn: %08x device init failed.\n", |
| 711 | DRIVERLNAME, |
| 712 | CardProperties[ent->driver_data].Name, |
| 713 | pdev->bus->number, |
| 714 | pdev->devfn)) |
| 715 | printk(KERN_ERR |
| 716 | "%s: %s bus: %08x fn: %08x device init failed.\n", |
| 717 | DRIVERLNAME, |
| 718 | CardProperties[ent->driver_data]. |
| 719 | Name, pdev->bus->number, |
| 720 | pdev->devfn); |
| 721 | return (-EIO); |
| 722 | } |
| 723 | |
| 724 | pci_set_master(pdev); |
| 725 | |
| 726 | pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency); |
| 727 | if (!pci_latency) { |
| 728 | DBG_TRC(("%s: bus: %08x fn: %08x fix latency.\n", |
| 729 | DRIVERLNAME, pdev->bus->number, pdev->devfn)) |
| 730 | printk(KERN_INFO |
| 731 | "%s: bus: %08x fn: %08x fix latency.\n", |
| 732 | DRIVERLNAME, pdev->bus->number, pdev->devfn); |
| 733 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, new_latency); |
| 734 | } |
| 735 | |
| 736 | if (!(pdiva = diva_driver_add_card(pdev, ent->driver_data))) { |
| 737 | DBG_TRC(("%s: %s bus: %08x fn: %08x card init failed.\n", |
| 738 | DRIVERLNAME, |
| 739 | CardProperties[ent->driver_data].Name, |
| 740 | pdev->bus->number, |
| 741 | pdev->devfn)) |
| 742 | printk(KERN_ERR |
| 743 | "%s: %s bus: %08x fn: %08x card init failed.\n", |
| 744 | DRIVERLNAME, |
| 745 | CardProperties[ent->driver_data]. |
| 746 | Name, pdev->bus->number, |
| 747 | pdev->devfn); |
| 748 | return (-EIO); |
| 749 | } |
| 750 | |
| 751 | pci_set_drvdata(pdev, pdiva); |
| 752 | |
| 753 | return (0); |
| 754 | } |
| 755 | |
| 756 | static void __devexit divas_remove_one(struct pci_dev *pdev) |
| 757 | { |
| 758 | void *pdiva = pci_get_drvdata(pdev); |
| 759 | |
| 760 | DBG_TRC(("bus: %08x fn: %08x removal.\n", |
| 761 | pdev->bus->number, pdev->devfn)) |
| 762 | printk(KERN_INFO "%s: bus: %08x fn: %08x removal.\n", |
| 763 | DRIVERLNAME, pdev->bus->number, pdev->devfn); |
| 764 | |
| 765 | if (pdiva) { |
| 766 | diva_driver_remove_card(pdiva); |
| 767 | } |
| 768 | |
| 769 | } |
| 770 | |
| 771 | /* -------------------------------------------------------------------------- |
| 772 | Driver Load / Startup |
| 773 | -------------------------------------------------------------------------- */ |
| 774 | static int DIVA_INIT_FUNCTION divas_init(void) |
| 775 | { |
| 776 | char tmprev[50]; |
| 777 | int ret = 0; |
| 778 | |
| 779 | printk(KERN_INFO "%s\n", DRIVERNAME); |
| 780 | printk(KERN_INFO "%s: Rel:%s Rev:", DRIVERLNAME, DRIVERRELEASE_DIVAS); |
| 781 | strcpy(tmprev, main_revision); |
| 782 | printk("%s Build: %s(%s)\n", getrev(tmprev), |
| 783 | diva_xdi_common_code_build, DIVA_BUILD); |
| 784 | printk(KERN_INFO "%s: support for: ", DRIVERLNAME); |
| 785 | #ifdef CONFIG_ISDN_DIVAS_BRIPCI |
| 786 | printk("BRI/PCI "); |
| 787 | #endif |
| 788 | #ifdef CONFIG_ISDN_DIVAS_PRIPCI |
| 789 | printk("PRI/PCI "); |
| 790 | #endif |
| 791 | printk("adapters\n"); |
| 792 | |
| 793 | if (!divasfunc_init(dbgmask)) { |
| 794 | printk(KERN_ERR "%s: failed to connect to DIDD.\n", |
| 795 | DRIVERLNAME); |
| 796 | ret = -EIO; |
| 797 | goto out; |
| 798 | } |
| 799 | |
| 800 | if (!divas_register_chrdev()) { |
| 801 | #ifdef MODULE |
| 802 | divasfunc_exit(); |
| 803 | #endif |
| 804 | ret = -EIO; |
| 805 | goto out; |
| 806 | } |
| 807 | |
| 808 | if (!create_divas_proc()) { |
| 809 | #ifdef MODULE |
| 810 | remove_divas_proc(); |
| 811 | divas_unregister_chrdev(); |
| 812 | divasfunc_exit(); |
| 813 | #endif |
| 814 | printk(KERN_ERR "%s: failed to create proc entry.\n", |
| 815 | DRIVERLNAME); |
| 816 | ret = -EIO; |
| 817 | goto out; |
| 818 | } |
| 819 | |
| 820 | if ((ret = pci_register_driver(&diva_pci_driver))) { |
| 821 | #ifdef MODULE |
| 822 | remove_divas_proc(); |
| 823 | divas_unregister_chrdev(); |
| 824 | divasfunc_exit(); |
| 825 | #endif |
| 826 | printk(KERN_ERR "%s: failed to init pci driver.\n", |
| 827 | DRIVERLNAME); |
| 828 | goto out; |
| 829 | } |
| 830 | printk(KERN_INFO "%s: started with major %d\n", DRIVERLNAME, major); |
| 831 | |
| 832 | out: |
| 833 | return (ret); |
| 834 | } |
| 835 | |
| 836 | /* -------------------------------------------------------------------------- |
| 837 | Driver Unload |
| 838 | -------------------------------------------------------------------------- */ |
| 839 | static void DIVA_EXIT_FUNCTION divas_exit(void) |
| 840 | { |
| 841 | pci_unregister_driver(&diva_pci_driver); |
| 842 | remove_divas_proc(); |
| 843 | divas_unregister_chrdev(); |
| 844 | divasfunc_exit(); |
| 845 | |
| 846 | printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME); |
| 847 | } |
| 848 | |
| 849 | module_init(divas_init); |
| 850 | module_exit(divas_exit); |