Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /***************************************************************************** |
| 2 | * sdladrv.c SDLA Support Module. Main module. |
| 3 | * |
| 4 | * This module is a library of common hardware-specific functions |
| 5 | * used by all Sangoma drivers. |
| 6 | * |
| 7 | * Author: Gideon Hack |
| 8 | * |
| 9 | * Copyright: (c) 1995-2000 Sangoma Technologies Inc. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License |
| 13 | * as published by the Free Software Foundation; either version |
| 14 | * 2 of the License, or (at your option) any later version. |
| 15 | * ============================================================================ |
| 16 | * Mar 20, 2001 Nenad Corbic Added the auto_pci_cfg filed, to support |
| 17 | * the PCISLOT #0. |
| 18 | * Apr 04, 2000 Nenad Corbic Fixed the auto memory detection code. |
| 19 | * The memory test at address 0xC8000. |
| 20 | * Mar 09, 2000 Nenad Corbic Added Gideon's Bug Fix: clear pci |
| 21 | * interrupt flags on initial load. |
| 22 | * Jun 02, 1999 Gideon Hack Added support for the S514 adapter. |
| 23 | * Updates for Linux 2.2.X kernels. |
| 24 | * Sep 17, 1998 Jaspreet Singh Updates for linux 2.2.X kernels |
| 25 | * Dec 20, 1996 Gene Kozin Version 3.0.0. Complete overhaul. |
| 26 | * Jul 12, 1996 Gene Kozin Changes for Linux 2.0 compatibility. |
| 27 | * Jun 12, 1996 Gene Kozin Added support for S503 card. |
| 28 | * Apr 30, 1996 Gene Kozin SDLA hardware interrupt is acknowledged before |
| 29 | * calling protocolspecific ISR. |
| 30 | * Register I/O ports with Linux kernel. |
| 31 | * Miscellaneous bug fixes. |
| 32 | * Dec 20, 1995 Gene Kozin Fixed a bug in interrupt routine. |
| 33 | * Oct 14, 1995 Gene Kozin Initial version. |
| 34 | *****************************************************************************/ |
| 35 | |
| 36 | /***************************************************************************** |
| 37 | * Notes: |
| 38 | * ------ |
| 39 | * 1. This code is ment to be system-independent (as much as possible). To |
| 40 | * achive this, various macros are used to hide system-specific interfaces. |
| 41 | * To compile this code, one of the following constants must be defined: |
| 42 | * |
| 43 | * Platform Define |
| 44 | * -------- ------ |
| 45 | * Linux _LINUX_ |
| 46 | * SCO Unix _SCO_UNIX_ |
| 47 | * |
| 48 | * 2. Supported adapter types: |
| 49 | * |
| 50 | * S502A |
| 51 | * ES502A (S502E) |
| 52 | * S503 |
| 53 | * S507 |
| 54 | * S508 (S509) |
| 55 | * |
| 56 | * 3. S502A Notes: |
| 57 | * |
| 58 | * There is no separate DPM window enable/disable control in S502A. It |
| 59 | * opens immediately after a window number it written to the HMCR |
| 60 | * register. To close the window, HMCR has to be written a value |
| 61 | * ????1111b (e.g. 0x0F or 0xFF). |
| 62 | * |
| 63 | * S502A DPM window cannot be located at offset E000 (e.g. 0xAE000). |
| 64 | * |
| 65 | * There should be a delay of ??? before reading back S502A status |
| 66 | * register. |
| 67 | * |
| 68 | * 4. S502E Notes: |
| 69 | * |
| 70 | * S502E has a h/w bug: although default IRQ line state is HIGH, enabling |
| 71 | * interrupts by setting bit 1 of the control register (BASE) to '1' |
| 72 | * causes it to go LOW! Therefore, disabling interrupts by setting that |
| 73 | * bit to '0' causes low-to-high transition on IRQ line (ghosty |
| 74 | * interrupt). The same occurs when disabling CPU by resetting bit 0 of |
| 75 | * CPU control register (BASE+3) - see the next note. |
| 76 | * |
| 77 | * S502E CPU and DPM control is limited: |
| 78 | * |
| 79 | * o CPU cannot be stopped independently. Resetting bit 0 of the CPUi |
| 80 | * control register (BASE+3) shuts the board down entirely, including |
| 81 | * DPM; |
| 82 | * |
| 83 | * o DPM access cannot be controlled dynamically. Ones CPU is started, |
| 84 | * bit 1 of the control register (BASE) is used to enable/disable IRQ, |
| 85 | * so that access to shared memory cannot be disabled while CPU is |
| 86 | * running. |
| 87 | ****************************************************************************/ |
| 88 | |
| 89 | #define _LINUX_ |
| 90 | |
| 91 | #if defined(_LINUX_) /****** Linux *******************************/ |
| 92 | |
| 93 | #include <linux/config.h> |
| 94 | #include <linux/kernel.h> /* printk(), and other useful stuff */ |
| 95 | #include <linux/stddef.h> /* offsetof(), etc. */ |
| 96 | #include <linux/errno.h> /* return codes */ |
| 97 | #include <linux/string.h> /* inline memset(), etc. */ |
| 98 | #include <linux/module.h> /* support for loadable modules */ |
| 99 | #include <linux/jiffies.h> /* for jiffies, HZ, etc. */ |
| 100 | #include <linux/sdladrv.h> /* API definitions */ |
| 101 | #include <linux/sdlasfm.h> /* SDLA firmware module definitions */ |
| 102 | #include <linux/sdlapci.h> /* SDLA PCI hardware definitions */ |
| 103 | #include <linux/pci.h> /* PCI defines and function prototypes */ |
| 104 | #include <asm/io.h> /* for inb(), outb(), etc. */ |
| 105 | |
| 106 | #define _INB(port) (inb(port)) |
| 107 | #define _OUTB(port, byte) (outb((byte),(port))) |
| 108 | #define SYSTEM_TICK jiffies |
| 109 | |
| 110 | #include <linux/init.h> |
| 111 | |
| 112 | |
| 113 | #elif defined(_SCO_UNIX_) /****** SCO Unix ****************************/ |
| 114 | |
| 115 | #if !defined(INKERNEL) |
| 116 | #error This code MUST be compiled in kernel mode! |
| 117 | #endif |
| 118 | #include <sys/sdladrv.h> /* API definitions */ |
| 119 | #include <sys/sdlasfm.h> /* SDLA firmware module definitions */ |
| 120 | #include <sys/inline.h> /* for inb(), outb(), etc. */ |
| 121 | #define _INB(port) (inb(port)) |
| 122 | #define _OUTB(port, byte) (outb((port),(byte))) |
| 123 | #define SYSTEM_TICK lbolt |
| 124 | |
| 125 | #else |
| 126 | #error Unknown system type! |
| 127 | #endif |
| 128 | |
| 129 | #define MOD_VERSION 3 |
| 130 | #define MOD_RELEASE 0 |
| 131 | |
| 132 | #define SDLA_IODELAY 100 /* I/O Rd/Wr delay, 10 works for 486DX2-66 */ |
| 133 | #define EXEC_DELAY 20 /* shared memory access delay, mks */ |
| 134 | #define EXEC_TIMEOUT (HZ*2) /* command timeout, in ticks */ |
| 135 | |
| 136 | /* I/O port address range */ |
| 137 | #define S502A_IORANGE 3 |
| 138 | #define S502E_IORANGE 4 |
| 139 | #define S503_IORANGE 3 |
| 140 | #define S507_IORANGE 4 |
| 141 | #define S508_IORANGE 4 |
| 142 | |
| 143 | /* Maximum amount of memory */ |
| 144 | #define S502_MAXMEM 0x10000L |
| 145 | #define S503_MAXMEM 0x10000L |
| 146 | #define S507_MAXMEM 0x40000L |
| 147 | #define S508_MAXMEM 0x40000L |
| 148 | |
| 149 | /* Minimum amount of memory */ |
| 150 | #define S502_MINMEM 0x8000L |
| 151 | #define S503_MINMEM 0x8000L |
| 152 | #define S507_MINMEM 0x20000L |
| 153 | #define S508_MINMEM 0x20000L |
| 154 | #define NO_PORT -1 |
| 155 | |
| 156 | |
| 157 | |
| 158 | |
| 159 | |
| 160 | /****** Function Prototypes *************************************************/ |
| 161 | |
| 162 | /* Hardware-specific functions */ |
| 163 | static int sdla_detect (sdlahw_t* hw); |
| 164 | static int sdla_autodpm (sdlahw_t* hw); |
| 165 | static int sdla_setdpm (sdlahw_t* hw); |
| 166 | static int sdla_load (sdlahw_t* hw, sfm_t* sfm, unsigned len); |
| 167 | static int sdla_init (sdlahw_t* hw); |
| 168 | static unsigned long sdla_memtest (sdlahw_t* hw); |
| 169 | static int sdla_bootcfg (sdlahw_t* hw, sfm_info_t* sfminfo); |
| 170 | static unsigned char make_config_byte (sdlahw_t* hw); |
| 171 | static int sdla_start (sdlahw_t* hw, unsigned addr); |
| 172 | |
| 173 | static int init_s502a (sdlahw_t* hw); |
| 174 | static int init_s502e (sdlahw_t* hw); |
| 175 | static int init_s503 (sdlahw_t* hw); |
| 176 | static int init_s507 (sdlahw_t* hw); |
| 177 | static int init_s508 (sdlahw_t* hw); |
| 178 | |
| 179 | static int detect_s502a (int port); |
| 180 | static int detect_s502e (int port); |
| 181 | static int detect_s503 (int port); |
| 182 | static int detect_s507 (int port); |
| 183 | static int detect_s508 (int port); |
| 184 | static int detect_s514 (sdlahw_t* hw); |
| 185 | static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card); |
| 186 | |
| 187 | /* Miscellaneous functions */ |
| 188 | static void peek_by_4 (unsigned long src, void* buf, unsigned len); |
| 189 | static void poke_by_4 (unsigned long dest, void* buf, unsigned len); |
| 190 | static int calibrate_delay (int mks); |
| 191 | static int get_option_index (unsigned* optlist, unsigned optval); |
| 192 | static unsigned check_memregion (void* ptr, unsigned len); |
| 193 | static unsigned test_memregion (void* ptr, unsigned len); |
| 194 | static unsigned short checksum (unsigned char* buf, unsigned len); |
| 195 | static int init_pci_slot(sdlahw_t *); |
| 196 | |
| 197 | static int pci_probe(sdlahw_t *hw); |
| 198 | |
| 199 | /****** Global Data ********************************************************** |
| 200 | * Note: All data must be explicitly initialized!!! |
| 201 | */ |
| 202 | |
| 203 | static struct pci_device_id sdladrv_pci_tbl[] = { |
| 204 | { V3_VENDOR_ID, V3_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, }, |
| 205 | { } /* Terminating entry */ |
| 206 | }; |
| 207 | MODULE_DEVICE_TABLE(pci, sdladrv_pci_tbl); |
| 208 | |
| 209 | MODULE_LICENSE("GPL"); |
| 210 | |
| 211 | /* private data */ |
| 212 | static char modname[] = "sdladrv"; |
| 213 | static char fullname[] = "SDLA Support Module"; |
| 214 | static char copyright[] = "(c) 1995-1999 Sangoma Technologies Inc."; |
| 215 | static unsigned exec_idle; |
| 216 | |
| 217 | /* Hardware configuration options. |
| 218 | * These are arrays of configuration options used by verification routines. |
| 219 | * The first element of each array is its size (i.e. number of options). |
| 220 | */ |
| 221 | static unsigned s502_port_options[] = |
| 222 | { 4, 0x250, 0x300, 0x350, 0x360 } |
| 223 | ; |
| 224 | static unsigned s503_port_options[] = |
| 225 | { 8, 0x250, 0x254, 0x300, 0x304, 0x350, 0x354, 0x360, 0x364 } |
| 226 | ; |
| 227 | static unsigned s508_port_options[] = |
| 228 | { 8, 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390 } |
| 229 | ; |
| 230 | |
| 231 | static unsigned s502a_irq_options[] = { 0 }; |
| 232 | static unsigned s502e_irq_options[] = { 4, 2, 3, 5, 7 }; |
| 233 | static unsigned s503_irq_options[] = { 5, 2, 3, 4, 5, 7 }; |
| 234 | static unsigned s508_irq_options[] = { 8, 3, 4, 5, 7, 10, 11, 12, 15 }; |
| 235 | |
| 236 | static unsigned s502a_dpmbase_options[] = |
| 237 | { |
| 238 | 28, |
| 239 | 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, |
| 240 | 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, |
| 241 | 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, |
| 242 | 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, |
| 243 | }; |
| 244 | static unsigned s507_dpmbase_options[] = |
| 245 | { |
| 246 | 32, |
| 247 | 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000, |
| 248 | 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000, |
| 249 | 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000, |
| 250 | 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000, |
| 251 | }; |
| 252 | static unsigned s508_dpmbase_options[] = /* incl. S502E and S503 */ |
| 253 | { |
| 254 | 32, |
| 255 | 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000, |
| 256 | 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000, |
| 257 | 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000, |
| 258 | 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000, |
| 259 | }; |
| 260 | |
| 261 | /* |
| 262 | static unsigned s502_dpmsize_options[] = { 2, 0x2000, 0x10000 }; |
| 263 | static unsigned s507_dpmsize_options[] = { 2, 0x2000, 0x4000 }; |
| 264 | static unsigned s508_dpmsize_options[] = { 1, 0x2000 }; |
| 265 | */ |
| 266 | |
| 267 | static unsigned s502a_pclk_options[] = { 2, 3600, 7200 }; |
| 268 | static unsigned s502e_pclk_options[] = { 5, 3600, 5000, 7200, 8000, 10000 }; |
| 269 | static unsigned s503_pclk_options[] = { 3, 7200, 8000, 10000 }; |
| 270 | static unsigned s507_pclk_options[] = { 1, 12288 }; |
| 271 | static unsigned s508_pclk_options[] = { 1, 16000 }; |
| 272 | |
| 273 | /* Host memory control register masks */ |
| 274 | static unsigned char s502a_hmcr[] = |
| 275 | { |
| 276 | 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, /* A0000 - AC000 */ |
| 277 | 0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, /* C0000 - CC000 */ |
| 278 | 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, /* D0000 - DC000 */ |
| 279 | 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, /* E0000 - EC000 */ |
| 280 | }; |
| 281 | static unsigned char s502e_hmcr[] = |
| 282 | { |
| 283 | 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x1E, /* A0000 - AE000 */ |
| 284 | 0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, 0x2E, /* C0000 - CE000 */ |
| 285 | 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E, /* D0000 - DE000 */ |
| 286 | 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, 0x3E, /* E0000 - EE000 */ |
| 287 | }; |
| 288 | static unsigned char s507_hmcr[] = |
| 289 | { |
| 290 | 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E, /* A0000 - AE000 */ |
| 291 | 0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E, /* B0000 - BE000 */ |
| 292 | 0x80, 0x82, 0x84, 0x86, 0x88, 0x8A, 0x8C, 0x8E, /* C0000 - CE000 */ |
| 293 | 0xC0, 0xC2, 0xC4, 0xC6, 0xC8, 0xCA, 0xCC, 0xCE, /* E0000 - EE000 */ |
| 294 | }; |
| 295 | static unsigned char s508_hmcr[] = |
| 296 | { |
| 297 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* A0000 - AE000 */ |
| 298 | 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* C0000 - CE000 */ |
| 299 | 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, /* D0000 - DE000 */ |
| 300 | 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, /* E0000 - EE000 */ |
| 301 | }; |
| 302 | |
| 303 | static unsigned char s507_irqmask[] = |
| 304 | { |
| 305 | 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xE0 |
| 306 | }; |
| 307 | |
| 308 | static int pci_slot_ar[MAX_S514_CARDS]; |
| 309 | |
| 310 | /******* Kernel Loadable Module Entry Points ********************************/ |
| 311 | |
| 312 | /*============================================================================ |
| 313 | * Module 'insert' entry point. |
| 314 | * o print announcement |
| 315 | * o initialize static data |
| 316 | * o calibrate SDLA shared memory access delay. |
| 317 | * |
| 318 | * Return: 0 Ok |
| 319 | * < 0 error. |
| 320 | * Context: process |
| 321 | */ |
| 322 | |
| 323 | static int __init sdladrv_init(void) |
| 324 | { |
| 325 | int i=0; |
| 326 | |
| 327 | printk(KERN_INFO "%s v%u.%u %s\n", |
| 328 | fullname, MOD_VERSION, MOD_RELEASE, copyright); |
| 329 | exec_idle = calibrate_delay(EXEC_DELAY); |
| 330 | #ifdef WANDEBUG |
| 331 | printk(KERN_DEBUG "%s: exec_idle = %d\n", modname, exec_idle); |
| 332 | #endif |
| 333 | |
| 334 | /* Initialize the PCI Card array, which |
| 335 | * will store flags, used to mark |
| 336 | * card initialization state */ |
| 337 | for (i=0; i<MAX_S514_CARDS; i++) |
| 338 | pci_slot_ar[i] = 0xFF; |
| 339 | |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | /*============================================================================ |
| 344 | * Module 'remove' entry point. |
| 345 | * o release all remaining system resources |
| 346 | */ |
| 347 | static void __exit sdladrv_cleanup(void) |
| 348 | { |
| 349 | } |
| 350 | |
| 351 | module_init(sdladrv_init); |
| 352 | module_exit(sdladrv_cleanup); |
| 353 | |
| 354 | /******* Kernel APIs ********************************************************/ |
| 355 | |
| 356 | /*============================================================================ |
| 357 | * Set up adapter. |
| 358 | * o detect adapter type |
| 359 | * o verify hardware configuration options |
| 360 | * o check for hardware conflicts |
| 361 | * o set up adapter shared memory |
| 362 | * o test adapter memory |
| 363 | * o load firmware |
| 364 | * Return: 0 ok. |
| 365 | * < 0 error |
| 366 | */ |
| 367 | |
| 368 | EXPORT_SYMBOL(sdla_setup); |
| 369 | |
| 370 | int sdla_setup (sdlahw_t* hw, void* sfm, unsigned len) |
| 371 | { |
| 372 | unsigned* irq_opt = NULL; /* IRQ options */ |
| 373 | unsigned* dpmbase_opt = NULL; /* DPM window base options */ |
| 374 | unsigned* pclk_opt = NULL; /* CPU clock rate options */ |
| 375 | int err=0; |
| 376 | |
| 377 | if (sdla_detect(hw)) { |
| 378 | if(hw->type != SDLA_S514) |
| 379 | printk(KERN_INFO "%s: no SDLA card found at port 0x%X\n", |
| 380 | modname, hw->port); |
| 381 | return -EINVAL; |
| 382 | } |
| 383 | |
| 384 | if(hw->type != SDLA_S514) { |
| 385 | printk(KERN_INFO "%s: found S%04u card at port 0x%X.\n", |
| 386 | modname, hw->type, hw->port); |
| 387 | |
| 388 | hw->dpmsize = SDLA_WINDOWSIZE; |
| 389 | switch (hw->type) { |
| 390 | case SDLA_S502A: |
| 391 | hw->io_range = S502A_IORANGE; |
| 392 | irq_opt = s502a_irq_options; |
| 393 | dpmbase_opt = s502a_dpmbase_options; |
| 394 | pclk_opt = s502a_pclk_options; |
| 395 | break; |
| 396 | |
| 397 | case SDLA_S502E: |
| 398 | hw->io_range = S502E_IORANGE; |
| 399 | irq_opt = s502e_irq_options; |
| 400 | dpmbase_opt = s508_dpmbase_options; |
| 401 | pclk_opt = s502e_pclk_options; |
| 402 | break; |
| 403 | |
| 404 | case SDLA_S503: |
| 405 | hw->io_range = S503_IORANGE; |
| 406 | irq_opt = s503_irq_options; |
| 407 | dpmbase_opt = s508_dpmbase_options; |
| 408 | pclk_opt = s503_pclk_options; |
| 409 | break; |
| 410 | |
| 411 | case SDLA_S507: |
| 412 | hw->io_range = S507_IORANGE; |
| 413 | irq_opt = s508_irq_options; |
| 414 | dpmbase_opt = s507_dpmbase_options; |
| 415 | pclk_opt = s507_pclk_options; |
| 416 | break; |
| 417 | |
| 418 | case SDLA_S508: |
| 419 | hw->io_range = S508_IORANGE; |
| 420 | irq_opt = s508_irq_options; |
| 421 | dpmbase_opt = s508_dpmbase_options; |
| 422 | pclk_opt = s508_pclk_options; |
| 423 | break; |
| 424 | } |
| 425 | |
| 426 | /* Verify IRQ configuration options */ |
| 427 | if (!get_option_index(irq_opt, hw->irq)) { |
| 428 | printk(KERN_INFO "%s: IRQ %d is invalid!\n", |
| 429 | modname, hw->irq); |
| 430 | return -EINVAL; |
| 431 | } |
| 432 | |
| 433 | /* Verify CPU clock rate configuration options */ |
| 434 | if (hw->pclk == 0) |
| 435 | hw->pclk = pclk_opt[1]; /* use default */ |
| 436 | |
| 437 | else if (!get_option_index(pclk_opt, hw->pclk)) { |
| 438 | printk(KERN_INFO "%s: CPU clock %u is invalid!\n", |
| 439 | modname, hw->pclk); |
| 440 | return -EINVAL; |
| 441 | } |
| 442 | printk(KERN_INFO "%s: assuming CPU clock rate of %u kHz.\n", |
| 443 | modname, hw->pclk); |
| 444 | |
| 445 | /* Setup adapter dual-port memory window and test memory */ |
| 446 | if (hw->dpmbase == 0) { |
| 447 | err = sdla_autodpm(hw); |
| 448 | if (err) { |
| 449 | printk(KERN_INFO |
| 450 | "%s: can't find available memory region!\n", |
| 451 | modname); |
| 452 | return err; |
| 453 | } |
| 454 | } |
| 455 | else if (!get_option_index(dpmbase_opt, |
| 456 | virt_to_phys(hw->dpmbase))) { |
| 457 | printk(KERN_INFO |
| 458 | "%s: memory address 0x%lX is invalid!\n", |
| 459 | modname, virt_to_phys(hw->dpmbase)); |
| 460 | return -EINVAL; |
| 461 | } |
| 462 | else if (sdla_setdpm(hw)) { |
| 463 | printk(KERN_INFO |
| 464 | "%s: 8K memory region at 0x%lX is not available!\n", |
| 465 | modname, virt_to_phys(hw->dpmbase)); |
| 466 | return -EINVAL; |
| 467 | } |
| 468 | printk(KERN_INFO |
| 469 | "%s: dual-port memory window is set at 0x%lX.\n", |
| 470 | modname, virt_to_phys(hw->dpmbase)); |
| 471 | |
| 472 | |
| 473 | /* If we find memory in 0xE**** Memory region, |
| 474 | * warn the user to disable the SHADOW RAM. |
| 475 | * Since memory corruption can occur if SHADOW is |
| 476 | * enabled. This can causes random crashes ! */ |
| 477 | if (virt_to_phys(hw->dpmbase) >= 0xE0000){ |
| 478 | printk(KERN_WARNING "\n%s: !!!!!!!! WARNING !!!!!!!!\n",modname); |
| 479 | printk(KERN_WARNING "%s: WANPIPE is using 0x%lX memory region !!!\n", |
| 480 | modname, virt_to_phys(hw->dpmbase)); |
| 481 | printk(KERN_WARNING " Please disable the SHADOW RAM, otherwise\n"); |
| 482 | printk(KERN_WARNING " your system might crash randomly from time to time !\n"); |
| 483 | printk(KERN_WARNING "%s: !!!!!!!! WARNING !!!!!!!!\n\n",modname); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | else { |
| 488 | hw->memory = test_memregion((void*)hw->dpmbase, |
| 489 | MAX_SIZEOF_S514_MEMORY); |
| 490 | if(hw->memory < (256 * 1024)) { |
| 491 | printk(KERN_INFO |
| 492 | "%s: error in testing S514 memory (0x%lX)\n", |
| 493 | modname, hw->memory); |
| 494 | sdla_down(hw); |
| 495 | return -EINVAL; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | printk(KERN_INFO "%s: found %luK bytes of on-board memory\n", |
| 500 | modname, hw->memory / 1024); |
| 501 | |
| 502 | /* Load firmware. If loader fails then shut down adapter */ |
| 503 | err = sdla_load(hw, sfm, len); |
| 504 | if (err) sdla_down(hw); /* shutdown adapter */ |
| 505 | |
| 506 | return err; |
| 507 | } |
| 508 | |
| 509 | /*============================================================================ |
| 510 | * Shut down SDLA: disable shared memory access and interrupts, stop CPU, etc. |
| 511 | */ |
| 512 | |
| 513 | EXPORT_SYMBOL(sdla_down); |
| 514 | |
| 515 | int sdla_down (sdlahw_t* hw) |
| 516 | { |
| 517 | unsigned port = hw->port; |
| 518 | int i; |
| 519 | unsigned char CPU_no; |
| 520 | u32 int_config, int_status; |
| 521 | |
| 522 | if(!port && (hw->type != SDLA_S514)) |
| 523 | return -EFAULT; |
| 524 | |
| 525 | switch (hw->type) { |
| 526 | case SDLA_S502A: |
| 527 | _OUTB(port, 0x08); /* halt CPU */ |
| 528 | _OUTB(port, 0x08); |
| 529 | _OUTB(port, 0x08); |
| 530 | hw->regs[0] = 0x08; |
| 531 | _OUTB(port + 1, 0xFF); /* close memory window */ |
| 532 | hw->regs[1] = 0xFF; |
| 533 | break; |
| 534 | |
| 535 | case SDLA_S502E: |
| 536 | _OUTB(port + 3, 0); /* stop CPU */ |
| 537 | _OUTB(port, 0); /* reset board */ |
| 538 | for (i = 0; i < S502E_IORANGE; ++i) |
| 539 | hw->regs[i] = 0 |
| 540 | ; |
| 541 | break; |
| 542 | |
| 543 | case SDLA_S503: |
| 544 | case SDLA_S507: |
| 545 | case SDLA_S508: |
| 546 | _OUTB(port, 0); /* reset board logic */ |
| 547 | hw->regs[0] = 0; |
| 548 | break; |
| 549 | |
| 550 | case SDLA_S514: |
| 551 | /* halt the adapter */ |
| 552 | *(char *)hw->vector = S514_CPU_HALT; |
| 553 | CPU_no = hw->S514_cpu_no[0]; |
| 554 | |
| 555 | /* disable the PCI IRQ and disable memory access */ |
| 556 | pci_read_config_dword(hw->pci_dev, PCI_INT_CONFIG, &int_config); |
| 557 | int_config &= (CPU_no == S514_CPU_A) ? ~PCI_DISABLE_IRQ_CPU_A : ~PCI_DISABLE_IRQ_CPU_B; |
| 558 | pci_write_config_dword(hw->pci_dev, PCI_INT_CONFIG, int_config); |
| 559 | read_S514_int_stat(hw, &int_status); |
| 560 | S514_intack(hw, int_status); |
| 561 | if(CPU_no == S514_CPU_A) |
| 562 | pci_write_config_dword(hw->pci_dev, PCI_MAP0_DWORD, |
| 563 | PCI_CPU_A_MEM_DISABLE); |
| 564 | else |
| 565 | pci_write_config_dword(hw->pci_dev, PCI_MAP1_DWORD, |
| 566 | PCI_CPU_B_MEM_DISABLE); |
| 567 | |
| 568 | /* free up the allocated virtual memory */ |
| 569 | iounmap((void *)hw->dpmbase); |
| 570 | iounmap((void *)hw->vector); |
| 571 | break; |
| 572 | |
| 573 | |
| 574 | default: |
| 575 | return -EINVAL; |
| 576 | } |
| 577 | return 0; |
| 578 | } |
| 579 | |
| 580 | /*============================================================================ |
| 581 | * Map shared memory window into SDLA address space. |
| 582 | */ |
| 583 | |
| 584 | EXPORT_SYMBOL(sdla_mapmem); |
| 585 | |
| 586 | int sdla_mapmem (sdlahw_t* hw, unsigned long addr) |
| 587 | { |
| 588 | unsigned port = hw->port; |
| 589 | register int tmp; |
| 590 | |
| 591 | switch (hw->type) { |
| 592 | case SDLA_S502A: |
| 593 | case SDLA_S502E: |
| 594 | if (addr < S502_MAXMEM) { /* verify parameter */ |
| 595 | tmp = addr >> 13; /* convert to register mask */ |
| 596 | _OUTB(port + 2, tmp); |
| 597 | hw->regs[2] = tmp; |
| 598 | } |
| 599 | else return -EINVAL; |
| 600 | break; |
| 601 | |
| 602 | case SDLA_S503: |
| 603 | if (addr < S503_MAXMEM) { /* verify parameter */ |
| 604 | tmp = (hw->regs[0] & 0x8F) | ((addr >> 9) & 0x70); |
| 605 | _OUTB(port, tmp); |
| 606 | hw->regs[0] = tmp; |
| 607 | } |
| 608 | else return -EINVAL; |
| 609 | break; |
| 610 | |
| 611 | case SDLA_S507: |
| 612 | if (addr < S507_MAXMEM) { |
| 613 | if (!(_INB(port) & 0x02)) |
| 614 | return -EIO; |
| 615 | tmp = addr >> 13; /* convert to register mask */ |
| 616 | _OUTB(port + 2, tmp); |
| 617 | hw->regs[2] = tmp; |
| 618 | } |
| 619 | else return -EINVAL; |
| 620 | break; |
| 621 | |
| 622 | case SDLA_S508: |
| 623 | if (addr < S508_MAXMEM) { |
| 624 | tmp = addr >> 13; /* convert to register mask */ |
| 625 | _OUTB(port + 2, tmp); |
| 626 | hw->regs[2] = tmp; |
| 627 | } |
| 628 | else return -EINVAL; |
| 629 | break; |
| 630 | |
| 631 | case SDLA_S514: |
| 632 | return 0; |
| 633 | |
| 634 | default: |
| 635 | return -EINVAL; |
| 636 | } |
| 637 | hw->vector = addr & 0xFFFFE000L; |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | /*============================================================================ |
| 642 | * Enable interrupt generation. |
| 643 | */ |
| 644 | |
| 645 | EXPORT_SYMBOL(sdla_inten); |
| 646 | |
| 647 | int sdla_inten (sdlahw_t* hw) |
| 648 | { |
| 649 | unsigned port = hw->port; |
| 650 | int tmp, i; |
| 651 | |
| 652 | switch (hw->type) { |
| 653 | case SDLA_S502E: |
| 654 | /* Note thar interrupt control operations on S502E are allowed |
| 655 | * only if CPU is enabled (bit 0 of status register is set). |
| 656 | */ |
| 657 | if (_INB(port) & 0x01) { |
| 658 | _OUTB(port, 0x02); /* bit1 = 1, bit2 = 0 */ |
| 659 | _OUTB(port, 0x06); /* bit1 = 1, bit2 = 1 */ |
| 660 | hw->regs[0] = 0x06; |
| 661 | } |
| 662 | else return -EIO; |
| 663 | break; |
| 664 | |
| 665 | case SDLA_S503: |
| 666 | tmp = hw->regs[0] | 0x04; |
| 667 | _OUTB(port, tmp); |
| 668 | hw->regs[0] = tmp; /* update mirror */ |
| 669 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 670 | if (!(_INB(port) & 0x02)) /* verify */ |
| 671 | return -EIO; |
| 672 | break; |
| 673 | |
| 674 | case SDLA_S508: |
| 675 | tmp = hw->regs[0] | 0x10; |
| 676 | _OUTB(port, tmp); |
| 677 | hw->regs[0] = tmp; /* update mirror */ |
| 678 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 679 | if (!(_INB(port + 1) & 0x10)) /* verify */ |
| 680 | return -EIO; |
| 681 | break; |
| 682 | |
| 683 | case SDLA_S502A: |
| 684 | case SDLA_S507: |
| 685 | break; |
| 686 | |
| 687 | case SDLA_S514: |
| 688 | break; |
| 689 | |
| 690 | default: |
| 691 | return -EINVAL; |
| 692 | |
| 693 | } |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | /*============================================================================ |
| 698 | * Disable interrupt generation. |
| 699 | */ |
| 700 | |
| 701 | EXPORT_SYMBOL(sdla_intde); |
| 702 | |
| 703 | int sdla_intde (sdlahw_t* hw) |
| 704 | { |
| 705 | unsigned port = hw->port; |
| 706 | int tmp, i; |
| 707 | |
| 708 | switch (hw->type) { |
| 709 | case SDLA_S502E: |
| 710 | /* Notes: |
| 711 | * 1) interrupt control operations are allowed only if CPU is |
| 712 | * enabled (bit 0 of status register is set). |
| 713 | * 2) disabling interrupts using bit 1 of control register |
| 714 | * causes IRQ line go high, therefore we are going to use |
| 715 | * 0x04 instead: lower it to inhibit interrupts to PC. |
| 716 | */ |
| 717 | if (_INB(port) & 0x01) { |
| 718 | _OUTB(port, hw->regs[0] & ~0x04); |
| 719 | hw->regs[0] &= ~0x04; |
| 720 | } |
| 721 | else return -EIO; |
| 722 | break; |
| 723 | |
| 724 | case SDLA_S503: |
| 725 | tmp = hw->regs[0] & ~0x04; |
| 726 | _OUTB(port, tmp); |
| 727 | hw->regs[0] = tmp; /* update mirror */ |
| 728 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 729 | if (_INB(port) & 0x02) /* verify */ |
| 730 | return -EIO; |
| 731 | break; |
| 732 | |
| 733 | case SDLA_S508: |
| 734 | tmp = hw->regs[0] & ~0x10; |
| 735 | _OUTB(port, tmp); |
| 736 | hw->regs[0] = tmp; /* update mirror */ |
| 737 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 738 | if (_INB(port) & 0x10) /* verify */ |
| 739 | return -EIO; |
| 740 | break; |
| 741 | |
| 742 | case SDLA_S502A: |
| 743 | case SDLA_S507: |
| 744 | break; |
| 745 | |
| 746 | default: |
| 747 | return -EINVAL; |
| 748 | } |
| 749 | return 0; |
| 750 | } |
| 751 | |
| 752 | /*============================================================================ |
| 753 | * Acknowledge SDLA hardware interrupt. |
| 754 | */ |
| 755 | |
| 756 | EXPORT_SYMBOL(sdla_intack); |
| 757 | |
| 758 | int sdla_intack (sdlahw_t* hw) |
| 759 | { |
| 760 | unsigned port = hw->port; |
| 761 | int tmp; |
| 762 | |
| 763 | switch (hw->type) { |
| 764 | case SDLA_S502E: |
| 765 | /* To acknoledge hardware interrupt we have to toggle bit 3 of |
| 766 | * control register: \_/ |
| 767 | * Note that interrupt control operations on S502E are allowed |
| 768 | * only if CPU is enabled (bit 1 of status register is set). |
| 769 | */ |
| 770 | if (_INB(port) & 0x01) { |
| 771 | tmp = hw->regs[0] & ~0x04; |
| 772 | _OUTB(port, tmp); |
| 773 | tmp |= 0x04; |
| 774 | _OUTB(port, tmp); |
| 775 | hw->regs[0] = tmp; |
| 776 | } |
| 777 | else return -EIO; |
| 778 | break; |
| 779 | |
| 780 | case SDLA_S503: |
| 781 | if (_INB(port) & 0x04) { |
| 782 | tmp = hw->regs[0] & ~0x08; |
| 783 | _OUTB(port, tmp); |
| 784 | tmp |= 0x08; |
| 785 | _OUTB(port, tmp); |
| 786 | hw->regs[0] = tmp; |
| 787 | } |
| 788 | break; |
| 789 | |
| 790 | case SDLA_S502A: |
| 791 | case SDLA_S507: |
| 792 | case SDLA_S508: |
| 793 | break; |
| 794 | |
| 795 | default: |
| 796 | return -EINVAL; |
| 797 | } |
| 798 | return 0; |
| 799 | } |
| 800 | |
| 801 | |
| 802 | /*============================================================================ |
| 803 | * Acknowledge S514 hardware interrupt. |
| 804 | */ |
| 805 | |
| 806 | EXPORT_SYMBOL(S514_intack); |
| 807 | |
| 808 | void S514_intack (sdlahw_t* hw, u32 int_status) |
| 809 | { |
| 810 | pci_write_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status); |
| 811 | } |
| 812 | |
| 813 | |
| 814 | /*============================================================================ |
| 815 | * Read the S514 hardware interrupt status. |
| 816 | */ |
| 817 | |
| 818 | EXPORT_SYMBOL(read_S514_int_stat); |
| 819 | |
| 820 | void read_S514_int_stat (sdlahw_t* hw, u32* int_status) |
| 821 | { |
| 822 | pci_read_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status); |
| 823 | } |
| 824 | |
| 825 | |
| 826 | /*============================================================================ |
| 827 | * Generate an interrupt to adapter's CPU. |
| 828 | */ |
| 829 | |
| 830 | EXPORT_SYMBOL(sdla_intr); |
| 831 | |
| 832 | int sdla_intr (sdlahw_t* hw) |
| 833 | { |
| 834 | unsigned port = hw->port; |
| 835 | |
| 836 | switch (hw->type) { |
| 837 | case SDLA_S502A: |
| 838 | if (!(_INB(port) & 0x40)) { |
| 839 | _OUTB(port, 0x10); /* issue NMI to CPU */ |
| 840 | hw->regs[0] = 0x10; |
| 841 | } |
| 842 | else return -EIO; |
| 843 | break; |
| 844 | |
| 845 | case SDLA_S507: |
| 846 | if ((_INB(port) & 0x06) == 0x06) { |
| 847 | _OUTB(port + 3, 0); |
| 848 | } |
| 849 | else return -EIO; |
| 850 | break; |
| 851 | |
| 852 | case SDLA_S508: |
| 853 | if (_INB(port + 1) & 0x02) { |
| 854 | _OUTB(port, 0x08); |
| 855 | } |
| 856 | else return -EIO; |
| 857 | break; |
| 858 | |
| 859 | case SDLA_S502E: |
| 860 | case SDLA_S503: |
| 861 | default: |
| 862 | return -EINVAL; |
| 863 | } |
| 864 | return 0; |
| 865 | } |
| 866 | |
| 867 | /*============================================================================ |
| 868 | * Execute Adapter Command. |
| 869 | * o Set exec flag. |
| 870 | * o Busy-wait until flag is reset. |
| 871 | * o Return number of loops made, or 0 if command timed out. |
| 872 | */ |
| 873 | |
| 874 | EXPORT_SYMBOL(sdla_exec); |
| 875 | |
| 876 | int sdla_exec (void* opflag) |
| 877 | { |
| 878 | volatile unsigned char* flag = opflag; |
| 879 | unsigned long tstop; |
| 880 | int nloops; |
| 881 | |
| 882 | if(readb(flag) != 0x00) { |
| 883 | printk(KERN_INFO |
| 884 | "WANPIPE: opp flag set on entry to sdla_exec\n"); |
| 885 | return 0; |
| 886 | } |
| 887 | |
| 888 | writeb(0x01, flag); |
| 889 | |
| 890 | tstop = SYSTEM_TICK + EXEC_TIMEOUT; |
| 891 | |
| 892 | for (nloops = 1; (readb(flag) == 0x01); ++ nloops) { |
| 893 | unsigned delay = exec_idle; |
| 894 | while (-- delay); /* delay */ |
| 895 | if (SYSTEM_TICK > tstop) return 0; /* time is up! */ |
| 896 | } |
| 897 | return nloops; |
| 898 | } |
| 899 | |
| 900 | /*============================================================================ |
| 901 | * Read absolute adapter memory. |
| 902 | * Transfer data from adapter's memory to data buffer. |
| 903 | * |
| 904 | * Note: |
| 905 | * Care should be taken when crossing dual-port memory window boundary. |
| 906 | * This function is not atomic, so caller must disable interrupt if |
| 907 | * interrupt routines are accessing adapter shared memory. |
| 908 | */ |
| 909 | |
| 910 | EXPORT_SYMBOL(sdla_peek); |
| 911 | |
| 912 | int sdla_peek (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len) |
| 913 | { |
| 914 | |
| 915 | if (addr + len > hw->memory) /* verify arguments */ |
| 916 | return -EINVAL; |
| 917 | |
| 918 | if(hw->type == SDLA_S514) { /* copy data for the S514 adapter */ |
| 919 | peek_by_4 ((unsigned long)hw->dpmbase + addr, buf, len); |
| 920 | return 0; |
| 921 | } |
| 922 | |
| 923 | else { /* copy data for the S508 adapter */ |
| 924 | unsigned long oldvec = hw->vector; |
| 925 | unsigned winsize = hw->dpmsize; |
| 926 | unsigned curpos, curlen; /* current offset and block size */ |
| 927 | unsigned long curvec; /* current DPM window vector */ |
| 928 | int err = 0; |
| 929 | |
| 930 | while (len && !err) { |
| 931 | curpos = addr % winsize; /* current window offset */ |
| 932 | curvec = addr - curpos; /* current window vector */ |
| 933 | curlen = (len > (winsize - curpos)) ? |
| 934 | (winsize - curpos) : len; |
| 935 | /* Relocate window and copy block of data */ |
| 936 | err = sdla_mapmem(hw, curvec); |
| 937 | peek_by_4 ((unsigned long)hw->dpmbase + curpos, buf, |
| 938 | curlen); |
| 939 | addr += curlen; |
| 940 | buf = (char*)buf + curlen; |
| 941 | len -= curlen; |
| 942 | } |
| 943 | |
| 944 | /* Restore DPM window position */ |
| 945 | sdla_mapmem(hw, oldvec); |
| 946 | return err; |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | |
| 951 | /*============================================================================ |
| 952 | * Read data from adapter's memory to a data buffer in 4-byte chunks. |
| 953 | * Note that we ensure that the SDLA memory address is on a 4-byte boundary |
| 954 | * before we begin moving the data in 4-byte chunks. |
| 955 | */ |
| 956 | |
| 957 | static void peek_by_4 (unsigned long src, void* buf, unsigned len) |
| 958 | { |
| 959 | |
| 960 | /* byte copy data until we get to a 4-byte boundary */ |
| 961 | while (len && (src & 0x03)) { |
| 962 | *(char *)buf ++ = readb(src ++); |
| 963 | len --; |
| 964 | } |
| 965 | |
| 966 | /* copy data in 4-byte chunks */ |
| 967 | while (len >= 4) { |
| 968 | *(unsigned long *)buf = readl(src); |
| 969 | buf += 4; |
| 970 | src += 4; |
| 971 | len -= 4; |
| 972 | } |
| 973 | |
| 974 | /* byte copy any remaining data */ |
| 975 | while (len) { |
| 976 | *(char *)buf ++ = readb(src ++); |
| 977 | len --; |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | |
| 982 | /*============================================================================ |
| 983 | * Write Absolute Adapter Memory. |
| 984 | * Transfer data from data buffer to adapter's memory. |
| 985 | * |
| 986 | * Note: |
| 987 | * Care should be taken when crossing dual-port memory window boundary. |
| 988 | * This function is not atomic, so caller must disable interrupt if |
| 989 | * interrupt routines are accessing adapter shared memory. |
| 990 | */ |
| 991 | |
| 992 | EXPORT_SYMBOL(sdla_poke); |
| 993 | |
| 994 | int sdla_poke (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len) |
| 995 | { |
| 996 | |
| 997 | if (addr + len > hw->memory) /* verify arguments */ |
| 998 | return -EINVAL; |
| 999 | |
| 1000 | if(hw->type == SDLA_S514) { /* copy data for the S514 adapter */ |
| 1001 | poke_by_4 ((unsigned long)hw->dpmbase + addr, buf, len); |
| 1002 | return 0; |
| 1003 | } |
| 1004 | |
| 1005 | else { /* copy data for the S508 adapter */ |
| 1006 | unsigned long oldvec = hw->vector; |
| 1007 | unsigned winsize = hw->dpmsize; |
| 1008 | unsigned curpos, curlen; /* current offset and block size */ |
| 1009 | unsigned long curvec; /* current DPM window vector */ |
| 1010 | int err = 0; |
| 1011 | |
| 1012 | while (len && !err) { |
| 1013 | curpos = addr % winsize; /* current window offset */ |
| 1014 | curvec = addr - curpos; /* current window vector */ |
| 1015 | curlen = (len > (winsize - curpos)) ? |
| 1016 | (winsize - curpos) : len; |
| 1017 | /* Relocate window and copy block of data */ |
| 1018 | sdla_mapmem(hw, curvec); |
| 1019 | poke_by_4 ((unsigned long)hw->dpmbase + curpos, buf, |
| 1020 | curlen); |
| 1021 | addr += curlen; |
| 1022 | buf = (char*)buf + curlen; |
| 1023 | len -= curlen; |
| 1024 | } |
| 1025 | |
| 1026 | /* Restore DPM window position */ |
| 1027 | sdla_mapmem(hw, oldvec); |
| 1028 | return err; |
| 1029 | } |
| 1030 | } |
| 1031 | |
| 1032 | |
| 1033 | /*============================================================================ |
| 1034 | * Write from a data buffer to adapter's memory in 4-byte chunks. |
| 1035 | * Note that we ensure that the SDLA memory address is on a 4-byte boundary |
| 1036 | * before we begin moving the data in 4-byte chunks. |
| 1037 | */ |
| 1038 | |
| 1039 | static void poke_by_4 (unsigned long dest, void* buf, unsigned len) |
| 1040 | { |
| 1041 | |
| 1042 | /* byte copy data until we get to a 4-byte boundary */ |
| 1043 | while (len && (dest & 0x03)) { |
| 1044 | writeb (*(char *)buf ++, dest ++); |
| 1045 | len --; |
| 1046 | } |
| 1047 | |
| 1048 | /* copy data in 4-byte chunks */ |
| 1049 | while (len >= 4) { |
| 1050 | writel (*(unsigned long *)buf, dest); |
| 1051 | dest += 4; |
| 1052 | buf += 4; |
| 1053 | len -= 4; |
| 1054 | } |
| 1055 | |
| 1056 | /* byte copy any remaining data */ |
| 1057 | while (len) { |
| 1058 | writeb (*(char *)buf ++ , dest ++); |
| 1059 | len --; |
| 1060 | } |
| 1061 | } |
| 1062 | |
| 1063 | |
| 1064 | #ifdef DONT_COMPIPLE_THIS |
| 1065 | #endif /* DONT_COMPIPLE_THIS */ |
| 1066 | |
| 1067 | /****** Hardware-Specific Functions *****************************************/ |
| 1068 | |
| 1069 | /*============================================================================ |
| 1070 | * Detect adapter type. |
| 1071 | * o if adapter type is specified then call detection routine for that adapter |
| 1072 | * type. Otherwise call detection routines for every adapter types until |
| 1073 | * adapter is detected. |
| 1074 | * |
| 1075 | * Notes: |
| 1076 | * 1) Detection tests are destructive! Adapter will be left in shutdown state |
| 1077 | * after the test. |
| 1078 | */ |
| 1079 | static int sdla_detect (sdlahw_t* hw) |
| 1080 | { |
| 1081 | unsigned port = hw->port; |
| 1082 | int err = 0; |
| 1083 | |
| 1084 | if (!port && (hw->type != SDLA_S514)) |
| 1085 | return -EFAULT; |
| 1086 | |
| 1087 | switch (hw->type) { |
| 1088 | case SDLA_S502A: |
| 1089 | if (!detect_s502a(port)) err = -ENODEV; |
| 1090 | break; |
| 1091 | |
| 1092 | case SDLA_S502E: |
| 1093 | if (!detect_s502e(port)) err = -ENODEV; |
| 1094 | break; |
| 1095 | |
| 1096 | case SDLA_S503: |
| 1097 | if (!detect_s503(port)) err = -ENODEV; |
| 1098 | break; |
| 1099 | |
| 1100 | case SDLA_S507: |
| 1101 | if (!detect_s507(port)) err = -ENODEV; |
| 1102 | break; |
| 1103 | |
| 1104 | case SDLA_S508: |
| 1105 | if (!detect_s508(port)) err = -ENODEV; |
| 1106 | break; |
| 1107 | |
| 1108 | case SDLA_S514: |
| 1109 | if (!detect_s514(hw)) err = -ENODEV; |
| 1110 | break; |
| 1111 | |
| 1112 | default: |
| 1113 | if (detect_s502a(port)) |
| 1114 | hw->type = SDLA_S502A; |
| 1115 | else if (detect_s502e(port)) |
| 1116 | hw->type = SDLA_S502E; |
| 1117 | else if (detect_s503(port)) |
| 1118 | hw->type = SDLA_S503; |
| 1119 | else if (detect_s507(port)) |
| 1120 | hw->type = SDLA_S507; |
| 1121 | else if (detect_s508(port)) |
| 1122 | hw->type = SDLA_S508; |
| 1123 | else err = -ENODEV; |
| 1124 | } |
| 1125 | return err; |
| 1126 | } |
| 1127 | |
| 1128 | /*============================================================================ |
| 1129 | * Autoselect memory region. |
| 1130 | * o try all available DMP address options from the top down until success. |
| 1131 | */ |
| 1132 | static int sdla_autodpm (sdlahw_t* hw) |
| 1133 | { |
| 1134 | int i, err = -EINVAL; |
| 1135 | unsigned* opt; |
| 1136 | |
| 1137 | switch (hw->type) { |
| 1138 | case SDLA_S502A: |
| 1139 | opt = s502a_dpmbase_options; |
| 1140 | break; |
| 1141 | |
| 1142 | case SDLA_S502E: |
| 1143 | case SDLA_S503: |
| 1144 | case SDLA_S508: |
| 1145 | opt = s508_dpmbase_options; |
| 1146 | break; |
| 1147 | |
| 1148 | case SDLA_S507: |
| 1149 | opt = s507_dpmbase_options; |
| 1150 | break; |
| 1151 | |
| 1152 | default: |
| 1153 | return -EINVAL; |
| 1154 | } |
| 1155 | |
| 1156 | /* Start testing from 8th position, address |
| 1157 | * 0xC8000 from the 508 address table. |
| 1158 | * We don't want to test A**** addresses, since |
| 1159 | * they are usually used for Video */ |
| 1160 | for (i = 8; i <= opt[0] && err; i++) { |
| 1161 | hw->dpmbase = phys_to_virt(opt[i]); |
| 1162 | err = sdla_setdpm(hw); |
| 1163 | } |
| 1164 | return err; |
| 1165 | } |
| 1166 | |
| 1167 | /*============================================================================ |
| 1168 | * Set up adapter dual-port memory window. |
| 1169 | * o shut down adapter |
| 1170 | * o make sure that no physical memory exists in this region, i.e entire |
| 1171 | * region reads 0xFF and is not writable when adapter is shut down. |
| 1172 | * o initialize adapter hardware |
| 1173 | * o make sure that region is usable with SDLA card, i.e. we can write to it |
| 1174 | * when adapter is configured. |
| 1175 | */ |
| 1176 | static int sdla_setdpm (sdlahw_t* hw) |
| 1177 | { |
| 1178 | int err; |
| 1179 | |
| 1180 | /* Shut down card and verify memory region */ |
| 1181 | sdla_down(hw); |
| 1182 | if (check_memregion(hw->dpmbase, hw->dpmsize)) |
| 1183 | return -EINVAL; |
| 1184 | |
| 1185 | /* Initialize adapter and test on-board memory segment by segment. |
| 1186 | * If memory size appears to be less than shared memory window size, |
| 1187 | * assume that memory region is unusable. |
| 1188 | */ |
| 1189 | err = sdla_init(hw); |
| 1190 | if (err) return err; |
| 1191 | |
| 1192 | if (sdla_memtest(hw) < hw->dpmsize) { /* less than window size */ |
| 1193 | sdla_down(hw); |
| 1194 | return -EIO; |
| 1195 | } |
| 1196 | sdla_mapmem(hw, 0L); /* set window vector at bottom */ |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | /*============================================================================ |
| 1201 | * Load adapter from the memory image of the SDLA firmware module. |
| 1202 | * o verify firmware integrity and compatibility |
| 1203 | * o start adapter up |
| 1204 | */ |
| 1205 | static int sdla_load (sdlahw_t* hw, sfm_t* sfm, unsigned len) |
| 1206 | { |
| 1207 | |
| 1208 | int i; |
| 1209 | |
| 1210 | /* Verify firmware signature */ |
| 1211 | if (strcmp(sfm->signature, SFM_SIGNATURE)) { |
| 1212 | printk(KERN_INFO "%s: not SDLA firmware!\n", |
| 1213 | modname); |
| 1214 | return -EINVAL; |
| 1215 | } |
| 1216 | |
| 1217 | /* Verify firmware module format version */ |
| 1218 | if (sfm->version != SFM_VERSION) { |
| 1219 | printk(KERN_INFO |
| 1220 | "%s: firmware format %u rejected! Expecting %u.\n", |
| 1221 | modname, sfm->version, SFM_VERSION); |
| 1222 | return -EINVAL; |
| 1223 | } |
| 1224 | |
| 1225 | /* Verify firmware module length and checksum */ |
| 1226 | if ((len - offsetof(sfm_t, image) != sfm->info.codesize) || |
| 1227 | (checksum((void*)&sfm->info, |
| 1228 | sizeof(sfm_info_t) + sfm->info.codesize) != sfm->checksum)) { |
| 1229 | printk(KERN_INFO "%s: firmware corrupted!\n", modname); |
| 1230 | return -EINVAL; |
| 1231 | } |
| 1232 | |
| 1233 | /* Announce */ |
| 1234 | printk(KERN_INFO "%s: loading %s (ID=%u)...\n", modname, |
| 1235 | (sfm->descr[0] != '\0') ? sfm->descr : "unknown firmware", |
| 1236 | sfm->info.codeid); |
| 1237 | |
| 1238 | if(hw->type == SDLA_S514) |
| 1239 | printk(KERN_INFO "%s: loading S514 adapter, CPU %c\n", |
| 1240 | modname, hw->S514_cpu_no[0]); |
| 1241 | |
| 1242 | /* Scan through the list of compatible adapters and make sure our |
| 1243 | * adapter type is listed. |
| 1244 | */ |
| 1245 | for (i = 0; |
| 1246 | (i < SFM_MAX_SDLA) && (sfm->info.adapter[i] != hw->type); |
| 1247 | ++i); |
| 1248 | |
| 1249 | if (i == SFM_MAX_SDLA) { |
| 1250 | printk(KERN_INFO "%s: firmware is not compatible with S%u!\n", |
| 1251 | modname, hw->type); |
| 1252 | return -EINVAL; |
| 1253 | } |
| 1254 | |
| 1255 | |
| 1256 | /* Make sure there is enough on-board memory */ |
| 1257 | if (hw->memory < sfm->info.memsize) { |
| 1258 | printk(KERN_INFO |
| 1259 | "%s: firmware needs %lu bytes of on-board memory!\n", |
| 1260 | modname, sfm->info.memsize); |
| 1261 | return -EINVAL; |
| 1262 | } |
| 1263 | |
| 1264 | /* Move code onto adapter */ |
| 1265 | if (sdla_poke(hw, sfm->info.codeoffs, sfm->image, sfm->info.codesize)) { |
| 1266 | printk(KERN_INFO "%s: failed to load code segment!\n", |
| 1267 | modname); |
| 1268 | return -EIO; |
| 1269 | } |
| 1270 | |
| 1271 | /* Prepare boot-time configuration data and kick-off CPU */ |
| 1272 | sdla_bootcfg(hw, &sfm->info); |
| 1273 | if (sdla_start(hw, sfm->info.startoffs)) { |
| 1274 | printk(KERN_INFO "%s: Damn... Adapter won't start!\n", |
| 1275 | modname); |
| 1276 | return -EIO; |
| 1277 | } |
| 1278 | |
| 1279 | /* position DPM window over the mailbox and enable interrupts */ |
| 1280 | if (sdla_mapmem(hw, sfm->info.winoffs) || sdla_inten(hw)) { |
| 1281 | printk(KERN_INFO "%s: adapter hardware failure!\n", |
| 1282 | modname); |
| 1283 | return -EIO; |
| 1284 | } |
| 1285 | hw->fwid = sfm->info.codeid; /* set firmware ID */ |
| 1286 | return 0; |
| 1287 | } |
| 1288 | |
| 1289 | /*============================================================================ |
| 1290 | * Initialize SDLA hardware: setup memory window, IRQ, etc. |
| 1291 | */ |
| 1292 | static int sdla_init (sdlahw_t* hw) |
| 1293 | { |
| 1294 | int i; |
| 1295 | |
| 1296 | for (i = 0; i < SDLA_MAXIORANGE; ++i) |
| 1297 | hw->regs[i] = 0; |
| 1298 | |
| 1299 | switch (hw->type) { |
| 1300 | case SDLA_S502A: return init_s502a(hw); |
| 1301 | case SDLA_S502E: return init_s502e(hw); |
| 1302 | case SDLA_S503: return init_s503(hw); |
| 1303 | case SDLA_S507: return init_s507(hw); |
| 1304 | case SDLA_S508: return init_s508(hw); |
| 1305 | } |
| 1306 | return -EINVAL; |
| 1307 | } |
| 1308 | |
| 1309 | /*============================================================================ |
| 1310 | * Test adapter on-board memory. |
| 1311 | * o slide DPM window from the bottom up and test adapter memory segment by |
| 1312 | * segment. |
| 1313 | * Return adapter memory size. |
| 1314 | */ |
| 1315 | static unsigned long sdla_memtest (sdlahw_t* hw) |
| 1316 | { |
| 1317 | unsigned long memsize; |
| 1318 | unsigned winsize; |
| 1319 | |
| 1320 | for (memsize = 0, winsize = hw->dpmsize; |
| 1321 | !sdla_mapmem(hw, memsize) && |
| 1322 | (test_memregion(hw->dpmbase, winsize) == winsize) |
| 1323 | ; |
| 1324 | memsize += winsize) |
| 1325 | ; |
| 1326 | hw->memory = memsize; |
| 1327 | return memsize; |
| 1328 | } |
| 1329 | |
| 1330 | /*============================================================================ |
| 1331 | * Prepare boot-time firmware configuration data. |
| 1332 | * o position DPM window |
| 1333 | * o initialize configuration data area |
| 1334 | */ |
| 1335 | static int sdla_bootcfg (sdlahw_t* hw, sfm_info_t* sfminfo) |
| 1336 | { |
| 1337 | unsigned char* data; |
| 1338 | |
| 1339 | if (!sfminfo->datasize) return 0; /* nothing to do */ |
| 1340 | |
| 1341 | if (sdla_mapmem(hw, sfminfo->dataoffs) != 0) |
| 1342 | return -EIO; |
| 1343 | |
| 1344 | if(hw->type == SDLA_S514) |
| 1345 | data = (void*)(hw->dpmbase + sfminfo->dataoffs); |
| 1346 | else |
| 1347 | data = (void*)((u8 *)hw->dpmbase + |
| 1348 | (sfminfo->dataoffs - hw->vector)); |
| 1349 | |
| 1350 | memset_io (data, 0, sfminfo->datasize); |
| 1351 | |
| 1352 | writeb (make_config_byte(hw), &data[0x00]); |
| 1353 | |
| 1354 | switch (sfminfo->codeid) { |
| 1355 | case SFID_X25_502: |
| 1356 | case SFID_X25_508: |
| 1357 | writeb (3, &data[0x01]); /* T1 timer */ |
| 1358 | writeb (10, &data[0x03]); /* N2 */ |
| 1359 | writeb (7, &data[0x06]); /* HDLC window size */ |
| 1360 | writeb (1, &data[0x0B]); /* DTE */ |
| 1361 | writeb (2, &data[0x0C]); /* X.25 packet window size */ |
| 1362 | writew (128, &data[0x0D]); /* default X.25 data size */ |
| 1363 | writew (128, &data[0x0F]); /* maximum X.25 data size */ |
| 1364 | break; |
| 1365 | } |
| 1366 | return 0; |
| 1367 | } |
| 1368 | |
| 1369 | /*============================================================================ |
| 1370 | * Prepare configuration byte identifying adapter type and CPU clock rate. |
| 1371 | */ |
| 1372 | static unsigned char make_config_byte (sdlahw_t* hw) |
| 1373 | { |
| 1374 | unsigned char byte = 0; |
| 1375 | |
| 1376 | switch (hw->pclk) { |
| 1377 | case 5000: byte = 0x01; break; |
| 1378 | case 7200: byte = 0x02; break; |
| 1379 | case 8000: byte = 0x03; break; |
| 1380 | case 10000: byte = 0x04; break; |
| 1381 | case 16000: byte = 0x05; break; |
| 1382 | } |
| 1383 | |
| 1384 | switch (hw->type) { |
| 1385 | case SDLA_S502E: byte |= 0x80; break; |
| 1386 | case SDLA_S503: byte |= 0x40; break; |
| 1387 | } |
| 1388 | return byte; |
| 1389 | } |
| 1390 | |
| 1391 | /*============================================================================ |
| 1392 | * Start adapter's CPU. |
| 1393 | * o calculate a pointer to adapter's cold boot entry point |
| 1394 | * o position DPM window |
| 1395 | * o place boot instruction (jp addr) at cold boot entry point |
| 1396 | * o start CPU |
| 1397 | */ |
| 1398 | static int sdla_start (sdlahw_t* hw, unsigned addr) |
| 1399 | { |
| 1400 | unsigned port = hw->port; |
| 1401 | unsigned char *bootp; |
| 1402 | int err, tmp, i; |
| 1403 | |
| 1404 | if (!port && (hw->type != SDLA_S514)) return -EFAULT; |
| 1405 | |
| 1406 | switch (hw->type) { |
| 1407 | case SDLA_S502A: |
| 1408 | bootp = hw->dpmbase; |
| 1409 | bootp += 0x66; |
| 1410 | break; |
| 1411 | |
| 1412 | case SDLA_S502E: |
| 1413 | case SDLA_S503: |
| 1414 | case SDLA_S507: |
| 1415 | case SDLA_S508: |
| 1416 | case SDLA_S514: |
| 1417 | bootp = hw->dpmbase; |
| 1418 | break; |
| 1419 | |
| 1420 | default: |
| 1421 | return -EINVAL; |
| 1422 | } |
| 1423 | |
| 1424 | err = sdla_mapmem(hw, 0); |
| 1425 | if (err) return err; |
| 1426 | |
| 1427 | writeb (0xC3, bootp); /* Z80: 'jp' opcode */ |
| 1428 | bootp ++; |
| 1429 | writew (addr, bootp); |
| 1430 | |
| 1431 | switch (hw->type) { |
| 1432 | case SDLA_S502A: |
| 1433 | _OUTB(port, 0x10); /* issue NMI to CPU */ |
| 1434 | hw->regs[0] = 0x10; |
| 1435 | break; |
| 1436 | |
| 1437 | case SDLA_S502E: |
| 1438 | _OUTB(port + 3, 0x01); /* start CPU */ |
| 1439 | hw->regs[3] = 0x01; |
| 1440 | for (i = 0; i < SDLA_IODELAY; ++i); |
| 1441 | if (_INB(port) & 0x01) { /* verify */ |
| 1442 | /* |
| 1443 | * Enabling CPU changes functionality of the |
| 1444 | * control register, so we have to reset its |
| 1445 | * mirror. |
| 1446 | */ |
| 1447 | _OUTB(port, 0); /* disable interrupts */ |
| 1448 | hw->regs[0] = 0; |
| 1449 | } |
| 1450 | else return -EIO; |
| 1451 | break; |
| 1452 | |
| 1453 | case SDLA_S503: |
| 1454 | tmp = hw->regs[0] | 0x09; /* set bits 0 and 3 */ |
| 1455 | _OUTB(port, tmp); |
| 1456 | hw->regs[0] = tmp; /* update mirror */ |
| 1457 | for (i = 0; i < SDLA_IODELAY; ++i); |
| 1458 | if (!(_INB(port) & 0x01)) /* verify */ |
| 1459 | return -EIO; |
| 1460 | break; |
| 1461 | |
| 1462 | case SDLA_S507: |
| 1463 | tmp = hw->regs[0] | 0x02; |
| 1464 | _OUTB(port, tmp); |
| 1465 | hw->regs[0] = tmp; /* update mirror */ |
| 1466 | for (i = 0; i < SDLA_IODELAY; ++i); |
| 1467 | if (!(_INB(port) & 0x04)) /* verify */ |
| 1468 | return -EIO; |
| 1469 | break; |
| 1470 | |
| 1471 | case SDLA_S508: |
| 1472 | tmp = hw->regs[0] | 0x02; |
| 1473 | _OUTB(port, tmp); |
| 1474 | hw->regs[0] = tmp; /* update mirror */ |
| 1475 | for (i = 0; i < SDLA_IODELAY; ++i); |
| 1476 | if (!(_INB(port + 1) & 0x02)) /* verify */ |
| 1477 | return -EIO; |
| 1478 | break; |
| 1479 | |
| 1480 | case SDLA_S514: |
| 1481 | writeb (S514_CPU_START, hw->vector); |
| 1482 | break; |
| 1483 | |
| 1484 | default: |
| 1485 | return -EINVAL; |
| 1486 | } |
| 1487 | return 0; |
| 1488 | } |
| 1489 | |
| 1490 | /*============================================================================ |
| 1491 | * Initialize S502A adapter. |
| 1492 | */ |
| 1493 | static int init_s502a (sdlahw_t* hw) |
| 1494 | { |
| 1495 | unsigned port = hw->port; |
| 1496 | int tmp, i; |
| 1497 | |
| 1498 | if (!detect_s502a(port)) |
| 1499 | return -ENODEV; |
| 1500 | |
| 1501 | hw->regs[0] = 0x08; |
| 1502 | hw->regs[1] = 0xFF; |
| 1503 | |
| 1504 | /* Verify configuration options */ |
| 1505 | i = get_option_index(s502a_dpmbase_options, virt_to_phys(hw->dpmbase)); |
| 1506 | if (i == 0) |
| 1507 | return -EINVAL; |
| 1508 | |
| 1509 | tmp = s502a_hmcr[i - 1]; |
| 1510 | switch (hw->dpmsize) { |
| 1511 | case 0x2000: |
| 1512 | tmp |= 0x01; |
| 1513 | break; |
| 1514 | |
| 1515 | case 0x10000L: |
| 1516 | break; |
| 1517 | |
| 1518 | default: |
| 1519 | return -EINVAL; |
| 1520 | } |
| 1521 | |
| 1522 | /* Setup dual-port memory window (this also enables memory access) */ |
| 1523 | _OUTB(port + 1, tmp); |
| 1524 | hw->regs[1] = tmp; |
| 1525 | hw->regs[0] = 0x08; |
| 1526 | return 0; |
| 1527 | } |
| 1528 | |
| 1529 | /*============================================================================ |
| 1530 | * Initialize S502E adapter. |
| 1531 | */ |
| 1532 | static int init_s502e (sdlahw_t* hw) |
| 1533 | { |
| 1534 | unsigned port = hw->port; |
| 1535 | int tmp, i; |
| 1536 | |
| 1537 | if (!detect_s502e(port)) |
| 1538 | return -ENODEV; |
| 1539 | |
| 1540 | /* Verify configuration options */ |
| 1541 | i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase)); |
| 1542 | if (i == 0) |
| 1543 | return -EINVAL; |
| 1544 | |
| 1545 | tmp = s502e_hmcr[i - 1]; |
| 1546 | switch (hw->dpmsize) { |
| 1547 | case 0x2000: |
| 1548 | tmp |= 0x01; |
| 1549 | break; |
| 1550 | |
| 1551 | case 0x10000L: |
| 1552 | break; |
| 1553 | |
| 1554 | default: |
| 1555 | return -EINVAL; |
| 1556 | } |
| 1557 | |
| 1558 | /* Setup dual-port memory window */ |
| 1559 | _OUTB(port + 1, tmp); |
| 1560 | hw->regs[1] = tmp; |
| 1561 | |
| 1562 | /* Enable memory access */ |
| 1563 | _OUTB(port, 0x02); |
| 1564 | hw->regs[0] = 0x02; |
| 1565 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1566 | return (_INB(port) & 0x02) ? 0 : -EIO; |
| 1567 | } |
| 1568 | |
| 1569 | /*============================================================================ |
| 1570 | * Initialize S503 adapter. |
| 1571 | * --------------------------------------------------------------------------- |
| 1572 | */ |
| 1573 | static int init_s503 (sdlahw_t* hw) |
| 1574 | { |
| 1575 | unsigned port = hw->port; |
| 1576 | int tmp, i; |
| 1577 | |
| 1578 | if (!detect_s503(port)) |
| 1579 | return -ENODEV; |
| 1580 | |
| 1581 | /* Verify configuration options */ |
| 1582 | i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase)); |
| 1583 | if (i == 0) |
| 1584 | return -EINVAL; |
| 1585 | |
| 1586 | tmp = s502e_hmcr[i - 1]; |
| 1587 | switch (hw->dpmsize) { |
| 1588 | case 0x2000: |
| 1589 | tmp |= 0x01; |
| 1590 | break; |
| 1591 | |
| 1592 | case 0x10000L: |
| 1593 | break; |
| 1594 | |
| 1595 | default: |
| 1596 | return -EINVAL; |
| 1597 | } |
| 1598 | |
| 1599 | /* Setup dual-port memory window */ |
| 1600 | _OUTB(port + 1, tmp); |
| 1601 | hw->regs[1] = tmp; |
| 1602 | |
| 1603 | /* Enable memory access */ |
| 1604 | _OUTB(port, 0x02); |
| 1605 | hw->regs[0] = 0x02; /* update mirror */ |
| 1606 | return 0; |
| 1607 | } |
| 1608 | |
| 1609 | /*============================================================================ |
| 1610 | * Initialize S507 adapter. |
| 1611 | */ |
| 1612 | static int init_s507 (sdlahw_t* hw) |
| 1613 | { |
| 1614 | unsigned port = hw->port; |
| 1615 | int tmp, i; |
| 1616 | |
| 1617 | if (!detect_s507(port)) |
| 1618 | return -ENODEV; |
| 1619 | |
| 1620 | /* Verify configuration options */ |
| 1621 | i = get_option_index(s507_dpmbase_options, virt_to_phys(hw->dpmbase)); |
| 1622 | if (i == 0) |
| 1623 | return -EINVAL; |
| 1624 | |
| 1625 | tmp = s507_hmcr[i - 1]; |
| 1626 | switch (hw->dpmsize) { |
| 1627 | case 0x2000: |
| 1628 | tmp |= 0x01; |
| 1629 | break; |
| 1630 | |
| 1631 | case 0x10000L: |
| 1632 | break; |
| 1633 | |
| 1634 | default: |
| 1635 | return -EINVAL; |
| 1636 | } |
| 1637 | |
| 1638 | /* Enable adapter's logic */ |
| 1639 | _OUTB(port, 0x01); |
| 1640 | hw->regs[0] = 0x01; |
| 1641 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1642 | if (!(_INB(port) & 0x20)) |
| 1643 | return -EIO; |
| 1644 | |
| 1645 | /* Setup dual-port memory window */ |
| 1646 | _OUTB(port + 1, tmp); |
| 1647 | hw->regs[1] = tmp; |
| 1648 | |
| 1649 | /* Enable memory access */ |
| 1650 | tmp = hw->regs[0] | 0x04; |
| 1651 | if (hw->irq) { |
| 1652 | i = get_option_index(s508_irq_options, hw->irq); |
| 1653 | if (i) tmp |= s507_irqmask[i - 1]; |
| 1654 | } |
| 1655 | _OUTB(port, tmp); |
| 1656 | hw->regs[0] = tmp; /* update mirror */ |
| 1657 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1658 | return (_INB(port) & 0x08) ? 0 : -EIO; |
| 1659 | } |
| 1660 | |
| 1661 | /*============================================================================ |
| 1662 | * Initialize S508 adapter. |
| 1663 | */ |
| 1664 | static int init_s508 (sdlahw_t* hw) |
| 1665 | { |
| 1666 | unsigned port = hw->port; |
| 1667 | int tmp, i; |
| 1668 | |
| 1669 | if (!detect_s508(port)) |
| 1670 | return -ENODEV; |
| 1671 | |
| 1672 | /* Verify configuration options */ |
| 1673 | i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase)); |
| 1674 | if (i == 0) |
| 1675 | return -EINVAL; |
| 1676 | |
| 1677 | /* Setup memory configuration */ |
| 1678 | tmp = s508_hmcr[i - 1]; |
| 1679 | _OUTB(port + 1, tmp); |
| 1680 | hw->regs[1] = tmp; |
| 1681 | |
| 1682 | /* Enable memory access */ |
| 1683 | _OUTB(port, 0x04); |
| 1684 | hw->regs[0] = 0x04; /* update mirror */ |
| 1685 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1686 | return (_INB(port + 1) & 0x04) ? 0 : -EIO; |
| 1687 | } |
| 1688 | |
| 1689 | /*============================================================================ |
| 1690 | * Detect S502A adapter. |
| 1691 | * Following tests are used to detect S502A adapter: |
| 1692 | * 1. All registers other than status (BASE) should read 0xFF |
| 1693 | * 2. After writing 00001000b to control register, status register should |
| 1694 | * read 01000000b. |
| 1695 | * 3. After writing 0 to control register, status register should still |
| 1696 | * read 01000000b. |
| 1697 | * 4. After writing 00000100b to control register, status register should |
| 1698 | * read 01000100b. |
| 1699 | * Return 1 if detected o.k. or 0 if failed. |
| 1700 | * Note: This test is destructive! Adapter will be left in shutdown |
| 1701 | * state after the test. |
| 1702 | */ |
| 1703 | static int detect_s502a (int port) |
| 1704 | { |
| 1705 | int i, j; |
| 1706 | |
| 1707 | if (!get_option_index(s502_port_options, port)) |
| 1708 | return 0; |
| 1709 | |
| 1710 | for (j = 1; j < SDLA_MAXIORANGE; ++j) { |
| 1711 | if (_INB(port + j) != 0xFF) |
| 1712 | return 0; |
| 1713 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1714 | } |
| 1715 | |
| 1716 | _OUTB(port, 0x08); /* halt CPU */ |
| 1717 | _OUTB(port, 0x08); |
| 1718 | _OUTB(port, 0x08); |
| 1719 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1720 | if (_INB(port) != 0x40) |
| 1721 | return 0; |
| 1722 | _OUTB(port, 0x00); |
| 1723 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1724 | if (_INB(port) != 0x40) |
| 1725 | return 0; |
| 1726 | _OUTB(port, 0x04); |
| 1727 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1728 | if (_INB(port) != 0x44) |
| 1729 | return 0; |
| 1730 | |
| 1731 | /* Reset adapter */ |
| 1732 | _OUTB(port, 0x08); |
| 1733 | _OUTB(port, 0x08); |
| 1734 | _OUTB(port, 0x08); |
| 1735 | _OUTB(port + 1, 0xFF); |
| 1736 | return 1; |
| 1737 | } |
| 1738 | |
| 1739 | /*============================================================================ |
| 1740 | * Detect S502E adapter. |
| 1741 | * Following tests are used to verify adapter presence: |
| 1742 | * 1. All registers other than status (BASE) should read 0xFF. |
| 1743 | * 2. After writing 0 to CPU control register (BASE+3), status register |
| 1744 | * (BASE) should read 11111000b. |
| 1745 | * 3. After writing 00000100b to port BASE (set bit 2), status register |
| 1746 | * (BASE) should read 11111100b. |
| 1747 | * Return 1 if detected o.k. or 0 if failed. |
| 1748 | * Note: This test is destructive! Adapter will be left in shutdown |
| 1749 | * state after the test. |
| 1750 | */ |
| 1751 | static int detect_s502e (int port) |
| 1752 | { |
| 1753 | int i, j; |
| 1754 | |
| 1755 | if (!get_option_index(s502_port_options, port)) |
| 1756 | return 0; |
| 1757 | for (j = 1; j < SDLA_MAXIORANGE; ++j) { |
| 1758 | if (_INB(port + j) != 0xFF) |
| 1759 | return 0; |
| 1760 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1761 | } |
| 1762 | |
| 1763 | _OUTB(port + 3, 0); /* CPU control reg. */ |
| 1764 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1765 | if (_INB(port) != 0xF8) /* read status */ |
| 1766 | return 0; |
| 1767 | _OUTB(port, 0x04); /* set bit 2 */ |
| 1768 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1769 | if (_INB(port) != 0xFC) /* verify */ |
| 1770 | return 0; |
| 1771 | |
| 1772 | /* Reset adapter */ |
| 1773 | _OUTB(port, 0); |
| 1774 | return 1; |
| 1775 | } |
| 1776 | |
| 1777 | /*============================================================================ |
| 1778 | * Detect s503 adapter. |
| 1779 | * Following tests are used to verify adapter presence: |
| 1780 | * 1. All registers other than status (BASE) should read 0xFF. |
| 1781 | * 2. After writing 0 to control register (BASE), status register (BASE) |
| 1782 | * should read 11110000b. |
| 1783 | * 3. After writing 00000100b (set bit 2) to control register (BASE), |
| 1784 | * status register should read 11110010b. |
| 1785 | * Return 1 if detected o.k. or 0 if failed. |
| 1786 | * Note: This test is destructive! Adapter will be left in shutdown |
| 1787 | * state after the test. |
| 1788 | */ |
| 1789 | static int detect_s503 (int port) |
| 1790 | { |
| 1791 | int i, j; |
| 1792 | |
| 1793 | if (!get_option_index(s503_port_options, port)) |
| 1794 | return 0; |
| 1795 | for (j = 1; j < SDLA_MAXIORANGE; ++j) { |
| 1796 | if (_INB(port + j) != 0xFF) |
| 1797 | return 0; |
| 1798 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1799 | } |
| 1800 | |
| 1801 | _OUTB(port, 0); /* reset control reg.*/ |
| 1802 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1803 | if (_INB(port) != 0xF0) /* read status */ |
| 1804 | return 0; |
| 1805 | _OUTB(port, 0x04); /* set bit 2 */ |
| 1806 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1807 | if (_INB(port) != 0xF2) /* verify */ |
| 1808 | return 0; |
| 1809 | |
| 1810 | /* Reset adapter */ |
| 1811 | _OUTB(port, 0); |
| 1812 | return 1; |
| 1813 | } |
| 1814 | |
| 1815 | /*============================================================================ |
| 1816 | * Detect s507 adapter. |
| 1817 | * Following tests are used to detect s507 adapter: |
| 1818 | * 1. All ports should read the same value. |
| 1819 | * 2. After writing 0x00 to control register, status register should read |
| 1820 | * ?011000?b. |
| 1821 | * 3. After writing 0x01 to control register, status register should read |
| 1822 | * ?011001?b. |
| 1823 | * Return 1 if detected o.k. or 0 if failed. |
| 1824 | * Note: This test is destructive! Adapter will be left in shutdown |
| 1825 | * state after the test. |
| 1826 | */ |
| 1827 | static int detect_s507 (int port) |
| 1828 | { |
| 1829 | int tmp, i, j; |
| 1830 | |
| 1831 | if (!get_option_index(s508_port_options, port)) |
| 1832 | return 0; |
| 1833 | tmp = _INB(port); |
| 1834 | for (j = 1; j < S507_IORANGE; ++j) { |
| 1835 | if (_INB(port + j) != tmp) |
| 1836 | return 0; |
| 1837 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1838 | } |
| 1839 | |
| 1840 | _OUTB(port, 0x00); |
| 1841 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1842 | if ((_INB(port) & 0x7E) != 0x30) |
| 1843 | return 0; |
| 1844 | _OUTB(port, 0x01); |
| 1845 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1846 | if ((_INB(port) & 0x7E) != 0x32) |
| 1847 | return 0; |
| 1848 | |
| 1849 | /* Reset adapter */ |
| 1850 | _OUTB(port, 0x00); |
| 1851 | return 1; |
| 1852 | } |
| 1853 | |
| 1854 | /*============================================================================ |
| 1855 | * Detect s508 adapter. |
| 1856 | * Following tests are used to detect s508 adapter: |
| 1857 | * 1. After writing 0x00 to control register, status register should read |
| 1858 | * ??000000b. |
| 1859 | * 2. After writing 0x10 to control register, status register should read |
| 1860 | * ??010000b |
| 1861 | * Return 1 if detected o.k. or 0 if failed. |
| 1862 | * Note: This test is destructive! Adapter will be left in shutdown |
| 1863 | * state after the test. |
| 1864 | */ |
| 1865 | static int detect_s508 (int port) |
| 1866 | { |
| 1867 | int i; |
| 1868 | |
| 1869 | if (!get_option_index(s508_port_options, port)) |
| 1870 | return 0; |
| 1871 | _OUTB(port, 0x00); |
| 1872 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1873 | if ((_INB(port + 1) & 0x3F) != 0x00) |
| 1874 | return 0; |
| 1875 | _OUTB(port, 0x10); |
| 1876 | for (i = 0; i < SDLA_IODELAY; ++i); /* delay */ |
| 1877 | if ((_INB(port + 1) & 0x3F) != 0x10) |
| 1878 | return 0; |
| 1879 | |
| 1880 | /* Reset adapter */ |
| 1881 | _OUTB(port, 0x00); |
| 1882 | return 1; |
| 1883 | } |
| 1884 | |
| 1885 | /*============================================================================ |
| 1886 | * Detect s514 PCI adapter. |
| 1887 | * Return 1 if detected o.k. or 0 if failed. |
| 1888 | * Note: This test is destructive! Adapter will be left in shutdown |
| 1889 | * state after the test. |
| 1890 | */ |
| 1891 | static int detect_s514 (sdlahw_t* hw) |
| 1892 | { |
| 1893 | unsigned char CPU_no, slot_no, auto_slot_cfg; |
| 1894 | int number_S514_cards = 0; |
| 1895 | u32 S514_mem_base_addr = 0; |
| 1896 | u32 ut_u32; |
| 1897 | struct pci_dev *pci_dev; |
| 1898 | |
| 1899 | |
| 1900 | #ifndef CONFIG_PCI |
| 1901 | printk(KERN_INFO "%s: Linux not compiled for PCI usage!\n", modname); |
| 1902 | return 0; |
| 1903 | #endif |
| 1904 | |
| 1905 | /* |
| 1906 | The 'setup()' procedure in 'sdlamain.c' passes the CPU number and the |
| 1907 | slot number defined in 'router.conf' via the 'port' definition. |
| 1908 | */ |
| 1909 | CPU_no = hw->S514_cpu_no[0]; |
| 1910 | slot_no = hw->S514_slot_no; |
| 1911 | auto_slot_cfg = hw->auto_pci_cfg; |
| 1912 | |
| 1913 | if (auto_slot_cfg){ |
| 1914 | printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot=Auto\n", |
| 1915 | modname, CPU_no); |
| 1916 | |
| 1917 | }else{ |
| 1918 | printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot #%d\n", |
| 1919 | modname, CPU_no, slot_no); |
| 1920 | } |
| 1921 | |
| 1922 | /* check to see that CPU A or B has been selected in 'router.conf' */ |
| 1923 | switch(CPU_no) { |
| 1924 | case S514_CPU_A: |
| 1925 | case S514_CPU_B: |
| 1926 | break; |
| 1927 | |
| 1928 | default: |
| 1929 | printk(KERN_INFO "%s: S514 CPU definition invalid.\n", |
| 1930 | modname); |
| 1931 | printk(KERN_INFO "Must be 'A' or 'B'\n"); |
| 1932 | return 0; |
| 1933 | } |
| 1934 | |
| 1935 | number_S514_cards = find_s514_adapter(hw, 0); |
| 1936 | if(!number_S514_cards) |
| 1937 | return 0; |
| 1938 | |
| 1939 | /* we are using a single S514 adapter with a slot of 0 so re-read the */ |
| 1940 | /* location of this adapter */ |
| 1941 | if((number_S514_cards == 1) && auto_slot_cfg) { |
| 1942 | number_S514_cards = find_s514_adapter(hw, 1); |
| 1943 | if(!number_S514_cards) { |
| 1944 | printk(KERN_INFO "%s: Error finding PCI card\n", |
| 1945 | modname); |
| 1946 | return 0; |
| 1947 | } |
| 1948 | } |
| 1949 | |
| 1950 | pci_dev = hw->pci_dev; |
| 1951 | /* read the physical memory base address */ |
| 1952 | S514_mem_base_addr = (CPU_no == S514_CPU_A) ? |
| 1953 | (pci_dev->resource[1].start) : |
| 1954 | (pci_dev->resource[2].start); |
| 1955 | |
| 1956 | printk(KERN_INFO "%s: S514 PCI memory at 0x%X\n", |
| 1957 | modname, S514_mem_base_addr); |
| 1958 | if(!S514_mem_base_addr) { |
| 1959 | if(CPU_no == S514_CPU_B) |
| 1960 | printk(KERN_INFO "%s: CPU #B not present on the card\n", modname); |
| 1961 | else |
| 1962 | printk(KERN_INFO "%s: No PCI memory allocated to card\n", modname); |
| 1963 | return 0; |
| 1964 | } |
| 1965 | |
| 1966 | /* enable the PCI memory */ |
| 1967 | pci_read_config_dword(pci_dev, |
| 1968 | (CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD, |
| 1969 | &ut_u32); |
| 1970 | pci_write_config_dword(pci_dev, |
| 1971 | (CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD, |
| 1972 | (ut_u32 | PCI_MEMORY_ENABLE)); |
| 1973 | |
| 1974 | /* check the IRQ allocated and enable IRQ usage */ |
| 1975 | if(!(hw->irq = pci_dev->irq)) { |
| 1976 | printk(KERN_INFO "%s: IRQ not allocated to S514 adapter\n", |
| 1977 | modname); |
| 1978 | return 0; |
| 1979 | } |
| 1980 | |
| 1981 | /* BUG FIX : Mar 6 2000 |
| 1982 | * On a initial loading of the card, we must check |
| 1983 | * and clear PCI interrupt bits, due to a reset |
| 1984 | * problem on some other boards. i.e. An interrupt |
| 1985 | * might be pending, even after system bootup, |
| 1986 | * in which case, when starting wanrouter the machine |
| 1987 | * would crash. |
| 1988 | */ |
| 1989 | if (init_pci_slot(hw)) |
| 1990 | return 0; |
| 1991 | |
| 1992 | pci_read_config_dword(pci_dev, PCI_INT_CONFIG, &ut_u32); |
| 1993 | ut_u32 |= (CPU_no == S514_CPU_A) ? |
| 1994 | PCI_ENABLE_IRQ_CPU_A : PCI_ENABLE_IRQ_CPU_B; |
| 1995 | pci_write_config_dword(pci_dev, PCI_INT_CONFIG, ut_u32); |
| 1996 | |
| 1997 | printk(KERN_INFO "%s: IRQ %d allocated to the S514 card\n", |
| 1998 | modname, hw->irq); |
| 1999 | |
| 2000 | /* map the physical PCI memory to virtual memory */ |
| 2001 | (void *)hw->dpmbase = ioremap((unsigned long)S514_mem_base_addr, |
| 2002 | (unsigned long)MAX_SIZEOF_S514_MEMORY); |
| 2003 | /* map the physical control register memory to virtual memory */ |
| 2004 | hw->vector = (unsigned long)ioremap( |
| 2005 | (unsigned long)(S514_mem_base_addr + S514_CTRL_REG_BYTE), |
| 2006 | (unsigned long)16); |
| 2007 | |
| 2008 | if(!hw->dpmbase || !hw->vector) { |
| 2009 | printk(KERN_INFO "%s: PCI virtual memory allocation failed\n", |
| 2010 | modname); |
| 2011 | return 0; |
| 2012 | } |
| 2013 | |
| 2014 | /* halt the adapter */ |
| 2015 | writeb (S514_CPU_HALT, hw->vector); |
| 2016 | |
| 2017 | return 1; |
| 2018 | } |
| 2019 | |
| 2020 | /*============================================================================ |
| 2021 | * Find the S514 PCI adapter in the PCI bus. |
| 2022 | * Return the number of S514 adapters found (0 if no adapter found). |
| 2023 | */ |
| 2024 | static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card) |
| 2025 | { |
| 2026 | unsigned char slot_no; |
| 2027 | int number_S514_cards = 0; |
| 2028 | char S514_found_in_slot = 0; |
| 2029 | u16 PCI_subsys_vendor; |
| 2030 | |
| 2031 | struct pci_dev *pci_dev = NULL; |
| 2032 | |
| 2033 | slot_no = hw->S514_slot_no; |
| 2034 | |
| 2035 | while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev)) |
| 2036 | != NULL) { |
| 2037 | |
| 2038 | pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD, |
| 2039 | &PCI_subsys_vendor); |
| 2040 | |
| 2041 | if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR) |
| 2042 | continue; |
| 2043 | |
| 2044 | hw->pci_dev = pci_dev; |
| 2045 | |
| 2046 | if(find_first_S514_card) |
| 2047 | return(1); |
| 2048 | |
| 2049 | number_S514_cards ++; |
| 2050 | |
| 2051 | printk(KERN_INFO |
| 2052 | "%s: S514 card found, slot #%d (devfn 0x%X)\n", |
| 2053 | modname, ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK), |
| 2054 | pci_dev->devfn); |
| 2055 | |
| 2056 | if (hw->auto_pci_cfg){ |
| 2057 | hw->S514_slot_no = ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK); |
| 2058 | slot_no = hw->S514_slot_no; |
| 2059 | |
| 2060 | }else if (((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK) == slot_no){ |
| 2061 | S514_found_in_slot = 1; |
| 2062 | break; |
| 2063 | } |
| 2064 | } |
| 2065 | |
| 2066 | /* if no S514 adapter has been found, then exit */ |
| 2067 | if (!number_S514_cards) { |
| 2068 | printk(KERN_INFO "%s: Error, no S514 adapters found\n", modname); |
| 2069 | return 0; |
| 2070 | } |
| 2071 | /* if more than one S514 card has been found, then the user must have */ /* defined a slot number so that the correct adapter is used */ |
| 2072 | else if ((number_S514_cards > 1) && hw->auto_pci_cfg) { |
| 2073 | printk(KERN_INFO "%s: Error, PCI Slot autodetect Failed! \n" |
| 2074 | "%s: More than one S514 adapter found.\n" |
| 2075 | "%s: Disable the Autodetect feature and supply\n" |
| 2076 | "%s: the PCISLOT numbers for each card.\n", |
| 2077 | modname,modname,modname,modname); |
| 2078 | return 0; |
| 2079 | } |
| 2080 | /* if the user has specified a slot number and the S514 adapter has */ |
| 2081 | /* not been found in that slot, then exit */ |
| 2082 | else if (!hw->auto_pci_cfg && !S514_found_in_slot) { |
| 2083 | printk(KERN_INFO |
| 2084 | "%s: Error, S514 card not found in specified slot #%d\n", |
| 2085 | modname, slot_no); |
| 2086 | return 0; |
| 2087 | } |
| 2088 | |
| 2089 | return (number_S514_cards); |
| 2090 | } |
| 2091 | |
| 2092 | |
| 2093 | |
| 2094 | /******* Miscellaneous ******************************************************/ |
| 2095 | |
| 2096 | /*============================================================================ |
| 2097 | * Calibrate SDLA memory access delay. |
| 2098 | * Count number of idle loops made within 1 second and then calculate the |
| 2099 | * number of loops that should be made to achive desired delay. |
| 2100 | */ |
| 2101 | static int calibrate_delay (int mks) |
| 2102 | { |
| 2103 | unsigned int delay; |
| 2104 | unsigned long stop; |
| 2105 | |
| 2106 | for (delay = 0, stop = SYSTEM_TICK + HZ; SYSTEM_TICK < stop; ++delay); |
| 2107 | return (delay/(1000000L/mks) + 1); |
| 2108 | } |
| 2109 | |
| 2110 | /*============================================================================ |
| 2111 | * Get option's index into the options list. |
| 2112 | * Return option's index (1 .. N) or zero if option is invalid. |
| 2113 | */ |
| 2114 | static int get_option_index (unsigned* optlist, unsigned optval) |
| 2115 | { |
| 2116 | int i; |
| 2117 | |
| 2118 | for (i = 1; i <= optlist[0]; ++i) |
| 2119 | if ( optlist[i] == optval) |
| 2120 | return i; |
| 2121 | return 0; |
| 2122 | } |
| 2123 | |
| 2124 | /*============================================================================ |
| 2125 | * Check memory region to see if it's available. |
| 2126 | * Return: 0 ok. |
| 2127 | */ |
| 2128 | static unsigned check_memregion (void* ptr, unsigned len) |
| 2129 | { |
| 2130 | volatile unsigned char* p = ptr; |
| 2131 | |
| 2132 | for (; len && (readb (p) == 0xFF); --len, ++p) { |
| 2133 | writeb (0, p); /* attempt to write 0 */ |
| 2134 | if (readb(p) != 0xFF) { /* still has to read 0xFF */ |
| 2135 | writeb (0xFF, p);/* restore original value */ |
| 2136 | break; /* not good */ |
| 2137 | } |
| 2138 | } |
| 2139 | |
| 2140 | return len; |
| 2141 | } |
| 2142 | |
| 2143 | /*============================================================================ |
| 2144 | * Test memory region. |
| 2145 | * Return: size of the region that passed the test. |
| 2146 | * Note: Region size must be multiple of 2 ! |
| 2147 | */ |
| 2148 | static unsigned test_memregion (void* ptr, unsigned len) |
| 2149 | { |
| 2150 | volatile unsigned short* w_ptr; |
| 2151 | unsigned len_w = len >> 1; /* region len in words */ |
| 2152 | unsigned i; |
| 2153 | |
| 2154 | for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr) |
| 2155 | writew (0xAA55, w_ptr); |
| 2156 | |
| 2157 | for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr) |
| 2158 | if (readw (w_ptr) != 0xAA55) { |
| 2159 | len_w = i; |
| 2160 | break; |
| 2161 | } |
| 2162 | |
| 2163 | for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr) |
| 2164 | writew (0x55AA, w_ptr); |
| 2165 | |
| 2166 | for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr) |
| 2167 | if (readw(w_ptr) != 0x55AA) { |
| 2168 | len_w = i; |
| 2169 | break; |
| 2170 | } |
| 2171 | |
| 2172 | for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr) |
| 2173 | writew (0, w_ptr); |
| 2174 | |
| 2175 | return len_w << 1; |
| 2176 | } |
| 2177 | |
| 2178 | /*============================================================================ |
| 2179 | * Calculate 16-bit CRC using CCITT polynomial. |
| 2180 | */ |
| 2181 | static unsigned short checksum (unsigned char* buf, unsigned len) |
| 2182 | { |
| 2183 | unsigned short crc = 0; |
| 2184 | unsigned mask, flag; |
| 2185 | |
| 2186 | for (; len; --len, ++buf) { |
| 2187 | for (mask = 0x80; mask; mask >>= 1) { |
| 2188 | flag = (crc & 0x8000); |
| 2189 | crc <<= 1; |
| 2190 | crc |= ((*buf & mask) ? 1 : 0); |
| 2191 | if (flag) crc ^= 0x1021; |
| 2192 | } |
| 2193 | } |
| 2194 | return crc; |
| 2195 | } |
| 2196 | |
| 2197 | static int init_pci_slot(sdlahw_t *hw) |
| 2198 | { |
| 2199 | |
| 2200 | u32 int_status; |
| 2201 | int volatile found=0; |
| 2202 | int i=0; |
| 2203 | |
| 2204 | /* Check if this is a very first load for a specific |
| 2205 | * pci card. If it is, clear the interrput bits, and |
| 2206 | * set the flag indicating that this card was initialized. |
| 2207 | */ |
| 2208 | |
| 2209 | for (i=0; (i<MAX_S514_CARDS) && !found; i++){ |
| 2210 | if (pci_slot_ar[i] == hw->S514_slot_no){ |
| 2211 | found=1; |
| 2212 | break; |
| 2213 | } |
| 2214 | if (pci_slot_ar[i] == 0xFF){ |
| 2215 | break; |
| 2216 | } |
| 2217 | } |
| 2218 | |
| 2219 | if (!found){ |
| 2220 | read_S514_int_stat(hw,&int_status); |
| 2221 | S514_intack(hw,int_status); |
| 2222 | if (i == MAX_S514_CARDS){ |
| 2223 | printk(KERN_INFO "%s: Critical Error !!!\n",modname); |
| 2224 | printk(KERN_INFO |
| 2225 | "%s: Number of Sangoma PCI cards exceeded maximum limit.\n", |
| 2226 | modname); |
| 2227 | printk(KERN_INFO "Please contact Sangoma Technologies\n"); |
| 2228 | return 1; |
| 2229 | } |
| 2230 | pci_slot_ar[i] = hw->S514_slot_no; |
| 2231 | } |
| 2232 | return 0; |
| 2233 | } |
| 2234 | |
| 2235 | static int pci_probe(sdlahw_t *hw) |
| 2236 | { |
| 2237 | |
| 2238 | unsigned char slot_no; |
| 2239 | int number_S514_cards = 0; |
| 2240 | u16 PCI_subsys_vendor; |
| 2241 | u16 PCI_card_type; |
| 2242 | |
| 2243 | struct pci_dev *pci_dev = NULL; |
| 2244 | struct pci_bus *bus = NULL; |
| 2245 | |
| 2246 | slot_no = 0; |
| 2247 | |
| 2248 | while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev)) |
| 2249 | != NULL) { |
| 2250 | |
| 2251 | pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD, |
| 2252 | &PCI_subsys_vendor); |
| 2253 | |
| 2254 | if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR) |
| 2255 | continue; |
| 2256 | |
| 2257 | pci_read_config_word(pci_dev, PCI_CARD_TYPE, |
| 2258 | &PCI_card_type); |
| 2259 | |
| 2260 | bus = pci_dev->bus; |
| 2261 | |
| 2262 | /* A dual cpu card can support up to 4 physical connections, |
| 2263 | * where a single cpu card can support up to 2 physical |
| 2264 | * connections. The FT1 card can only support a single |
| 2265 | * connection, however we cannot distinguish between a Single |
| 2266 | * CPU card and an FT1 card. */ |
| 2267 | if (PCI_card_type == S514_DUAL_CPU){ |
| 2268 | number_S514_cards += 4; |
| 2269 | printk(KERN_INFO |
| 2270 | "wanpipe: S514-PCI card found, cpu(s) 2, bus #%d, slot #%d, irq #%d\n", |
| 2271 | bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK), |
| 2272 | pci_dev->irq); |
| 2273 | }else{ |
| 2274 | number_S514_cards += 2; |
| 2275 | printk(KERN_INFO |
| 2276 | "wanpipe: S514-PCI card found, cpu(s) 1, bus #%d, slot #%d, irq #%d\n", |
| 2277 | bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK), |
| 2278 | pci_dev->irq); |
| 2279 | } |
| 2280 | } |
| 2281 | |
| 2282 | return number_S514_cards; |
| 2283 | |
| 2284 | } |
| 2285 | |
| 2286 | |
| 2287 | |
| 2288 | EXPORT_SYMBOL(wanpipe_hw_probe); |
| 2289 | |
| 2290 | unsigned wanpipe_hw_probe(void) |
| 2291 | { |
| 2292 | sdlahw_t hw; |
| 2293 | unsigned* opt = s508_port_options; |
| 2294 | unsigned cardno=0; |
| 2295 | int i; |
| 2296 | |
| 2297 | memset(&hw, 0, sizeof(hw)); |
| 2298 | |
| 2299 | for (i = 1; i <= opt[0]; i++) { |
| 2300 | if (detect_s508(opt[i])){ |
| 2301 | /* S508 card can support up to two physical links */ |
| 2302 | cardno+=2; |
| 2303 | printk(KERN_INFO "wanpipe: S508-ISA card found, port 0x%x\n",opt[i]); |
| 2304 | } |
| 2305 | } |
| 2306 | |
| 2307 | #ifdef CONFIG_PCI |
| 2308 | hw.S514_slot_no = 0; |
| 2309 | cardno += pci_probe(&hw); |
| 2310 | #else |
| 2311 | printk(KERN_INFO "wanpipe: Warning, Kernel not compiled for PCI support!\n"); |
| 2312 | printk(KERN_INFO "wanpipe: PCI Hardware Probe Failed!\n"); |
| 2313 | #endif |
| 2314 | |
| 2315 | return cardno; |
| 2316 | } |
| 2317 | |
| 2318 | /****** End *****************************************************************/ |