Shad Ansari | 2f7f9be | 2017-06-07 13:34:53 -0700 | [diff] [blame^] | 1 | /* |
| 2 | <:copyright-BRCM:2016:DUAL/GPL:standard |
| 3 | |
| 4 | Broadcom Proprietary and Confidential.(c) 2016 Broadcom |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Unless you and Broadcom execute a separate written software license |
| 8 | agreement governing use of this software, this software is licensed |
| 9 | to you under the terms of the GNU General Public License version 2 |
| 10 | (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php, |
| 11 | with the following added to such license: |
| 12 | |
| 13 | As a special exception, the copyright holders of this software give |
| 14 | you permission to link this software with independent modules, and |
| 15 | to copy and distribute the resulting executable under terms of your |
| 16 | choice, provided that you also meet, for each linked independent |
| 17 | module, the terms and conditions of the license of that module. |
| 18 | An independent module is a module which is not derived from this |
| 19 | software. The special exception does not apply to any modifications |
| 20 | of the software. |
| 21 | |
| 22 | Not withstanding the above, under no circumstances may you combine |
| 23 | this software in any way with any other Broadcom software provided |
| 24 | under a license other than the GPL, without Broadcom's express prior |
| 25 | written consent. |
| 26 | |
| 27 | :> |
| 28 | */ |
| 29 | |
| 30 | #include <linux/fs.h> |
| 31 | #include <linux/buffer_head.h> |
| 32 | #include <linux/reboot.h> |
| 33 | #include <linux/pci.h> |
| 34 | #include <asm/segment.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | #include <bcmos_system.h> |
| 37 | #include <bcm_config.h> |
| 38 | #include <bcmolt_msg.h> |
| 39 | #include <bcmolt_fld.h> |
| 40 | #include <bcmolt_llpcie.h> |
| 41 | #include <bcmolt_conv.h> |
| 42 | #include <bcmolt_i2c_devs.h> |
| 43 | #include <bcmolt_board_selector.h> |
| 44 | #include "bcmolt_user_utils.h" |
| 45 | |
| 46 | #define BCM_I2C_DEV_ADDR_START typedef enum { |
| 47 | #define BCM_I2C_DEV_ADDR(name, desc, val) name = val, |
| 48 | #define BCM_I2C_DEV_ADDR_END } bcm_i2c_dev_addr; |
| 49 | #include <bcmolt_i2c_devs_addr.h> |
| 50 | |
| 51 | #define BOOT_FILE "/opt/bcm68620/bcm68620_boot.bin" |
| 52 | #define APPL_FILE "/opt/bcm68620/bcm68620_appl.bin" |
| 53 | #define ONU_FW_FILE "/opt/bcm68620/dummy_onu_firmware.bin" |
| 54 | |
| 55 | #define FPGA_REG_FPGA_VERSION 0x0 |
| 56 | #define FPGA_REG_BOARD_CONF 0x1 |
| 57 | #define FPGA_REG_RESETS 0x2 |
| 58 | |
| 59 | #define FPGA_RST_BIT_DEVICE 0x0 |
| 60 | #define FPGA_DEVICE_SWITCH 4 |
| 61 | |
| 62 | #define FPGA_ENABLE_ALL_DEVICES 0x1f |
| 63 | #define FPGA_ENABLE_SWITCH (1 << FPGA_DEVICE_SWITCH) |
| 64 | /* For now swap devices for consistency with PCI enumeration */ |
| 65 | #define FPGA_DEVICE_RESET_BIT(dev) (1 << (FPGA_RST_BIT_DEVICE + dev)) |
| 66 | |
| 67 | /* Minimum required FPGA version for reading default system mode via BOARD_CONF register. */ |
| 68 | #define FPGA_VER_FOR_SVK_CONFIG 6 |
| 69 | |
| 70 | /* Lock that protects critical sections */ |
| 71 | static bcmos_mutex user_lock; |
| 72 | static bcmos_bool user_lock_initialized; |
| 73 | |
| 74 | typedef enum |
| 75 | { |
| 76 | SVK_BOARD_ID_1 = 0x7, /* SVK #1 - BCM968620S: all PON flavors supported, SFP+ */ |
| 77 | SVK_BOARD_ID_2_XG = 0x6, /* SVK #2 - BCM968620XG: XGPON */ |
| 78 | SVK_BOARD_ID_2_XE = 0x5, /* SVK #2 - BCM968620XE: 10G EPON */ |
| 79 | SVK_BOARD_ID_3 = 0x4, /* SVK #3 - BCM968620K: all PON flavors supported, XFP */ |
| 80 | DVT_BOARD_ID = 0x3, /* DVT board */ |
| 81 | } svk_board_id; |
| 82 | |
| 83 | typedef enum |
| 84 | { |
| 85 | SVK_MODE_GPON_16X = 0xF, /* SVK #1/3: 16x GPON mode, SVK #2: only valid mode */ |
| 86 | SVK_MODE_EPON_1G_16X = 0xE, /* SVK #1/3: 16x 1G EPON mode */ |
| 87 | SVK_MODE_XGPON = 0xD, /* SVK #1/3: 8x XGPON mode */ |
| 88 | SVK_MODE_EPON_10G_8X = 0xC, /* SVK #1/3: 8x 10G EPON mode */ |
| 89 | SVK_MODE_EPON_GPON_8X = 0xB, /* SVK #1/3: 8x 10G EPON + 8x GPON coexistence mode */ |
| 90 | } svk_mode; |
| 91 | |
| 92 | |
| 93 | #define CHECK_RETURN_ERROR(cond,rc) \ |
| 94 | do { \ |
| 95 | if (cond) {\ |
| 96 | bcmos_printf("%s#%d: failed with rc=%d\n", __FUNCTION__, __LINE__, rc);\ |
| 97 | return rc;\ |
| 98 | }\ |
| 99 | } while (0) |
| 100 | |
| 101 | |
| 102 | static void userlock_lock(void) |
| 103 | { |
| 104 | if (!user_lock_initialized) |
| 105 | { |
| 106 | bcmos_mutex_create(&user_lock, 0, "reset_lock"); |
| 107 | user_lock_initialized = BCMOS_TRUE; |
| 108 | } |
| 109 | bcmos_mutex_lock(&user_lock); |
| 110 | } |
| 111 | |
| 112 | |
| 113 | static void userlock_unlock(void) |
| 114 | { |
| 115 | bcmos_mutex_unlock(&user_lock); |
| 116 | } |
| 117 | |
| 118 | static struct file *file_open(const char *path, int flags) |
| 119 | { |
| 120 | struct file *fd = NULL; |
| 121 | mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; |
| 122 | |
| 123 | fd = filp_open(path, flags, mode); |
| 124 | if(IS_ERR(fd)) |
| 125 | return NULL; |
| 126 | return fd; |
| 127 | } |
| 128 | |
| 129 | static void file_close(struct file *file) |
| 130 | { |
| 131 | filp_close(file, NULL); |
| 132 | } |
| 133 | |
| 134 | static int file_read(struct file *file, uint32_t offset, uint8_t *data, unsigned int size) |
| 135 | { |
| 136 | unsigned long long o = offset; |
| 137 | mm_segment_t oldfs; |
| 138 | int bytes_read; |
| 139 | |
| 140 | oldfs = get_fs(); |
| 141 | set_fs(get_ds()); |
| 142 | bytes_read = vfs_read(file, data, size, &o); |
| 143 | set_fs(oldfs); |
| 144 | if (bytes_read < 0) |
| 145 | { |
| 146 | BCMOS_TRACE_ERR("vfs_read returned error %d\n", bytes_read); |
| 147 | return (int)BCM_ERR_IO; |
| 148 | } |
| 149 | return bytes_read; |
| 150 | } |
| 151 | |
| 152 | static int file_write(struct file* file, unsigned long long offset, unsigned char* data, unsigned int size) |
| 153 | { |
| 154 | mm_segment_t oldfs; |
| 155 | int ret; |
| 156 | |
| 157 | oldfs = get_fs(); |
| 158 | set_fs(get_ds()); |
| 159 | |
| 160 | ret = vfs_write(file, data, size, &offset); |
| 161 | |
| 162 | set_fs(oldfs); |
| 163 | return ret; |
| 164 | } |
| 165 | |
| 166 | static bcmos_errno file_write_1(const char *path) |
| 167 | { |
| 168 | struct file *fd; |
| 169 | char to_write[] = { '1' }; |
| 170 | loff_t pos = 0; |
| 171 | ssize_t bytes_written; |
| 172 | |
| 173 | fd = file_open(path, O_WRONLY); |
| 174 | if ((fd == NULL) || (fd == (void *)-ENOENT)) /* -ENOENT; No such file or directory */ |
| 175 | { |
| 176 | BCMOS_TRACE_ERR("Can't open file %s for writing. Error %s\n", |
| 177 | path, bcmos_strerror(fd == NULL ? BCM_ERR_NULL : BCM_ERR_NOENT)); |
| 178 | return (fd == NULL ? BCM_ERR_NULL : BCM_ERR_NOENT); |
| 179 | } |
| 180 | |
| 181 | bytes_written = file_write(fd, pos, to_write, sizeof(to_write)); |
| 182 | if (bytes_written != sizeof(to_write)) |
| 183 | { |
| 184 | BCMOS_TRACE_ERR("vfs_write returned incorrect number of characters written: %d\n", bytes_written); |
| 185 | } |
| 186 | |
| 187 | file_close(fd); |
| 188 | return BCM_ERR_OK; |
| 189 | } |
| 190 | |
| 191 | static bcmos_errno i2c_fpga_read(uint32_t reg, uint32_t *val) |
| 192 | { |
| 193 | return maple_i2c_read_fpga(maple_i2c_get_client(FPGA_I2C_ADDR), reg, val); |
| 194 | } |
| 195 | |
| 196 | static bcmos_errno i2c_fpga_write(uint32_t reg, uint32_t val) |
| 197 | { |
| 198 | return maple_i2c_write_fpga(maple_i2c_get_client(FPGA_I2C_ADDR), reg, val); |
| 199 | } |
| 200 | |
| 201 | static bcmos_errno i2c_config_switch(void) |
| 202 | { |
| 203 | uint8_t to_write = 1; |
| 204 | int ret; |
| 205 | |
| 206 | ret = maple_i2c_write(maple_i2c_get_client(I2C_SW0_I2C_ADDR), &to_write, 1); |
| 207 | if (ret != 0) |
| 208 | { |
| 209 | BCMOS_TRACE_ERR("Failed to write switch: %d\n", ret); |
| 210 | return BCM_ERR_INTERNAL; |
| 211 | } |
| 212 | |
| 213 | return BCM_ERR_OK; |
| 214 | } |
| 215 | |
| 216 | static bcmos_errno i2c_fpga_version_get(uint32_t *version) |
| 217 | { |
| 218 | return i2c_fpga_read(FPGA_REG_FPGA_VERSION, version); |
| 219 | } |
| 220 | |
| 221 | static bcmos_errno i2c_svk_config_get(svk_board_id *board_id, svk_mode *mode) |
| 222 | { |
| 223 | uint32_t val; |
| 224 | bcmos_errno rc; |
| 225 | |
| 226 | rc = i2c_fpga_read(FPGA_REG_BOARD_CONF, &val); |
| 227 | if (rc == BCM_ERR_OK) |
| 228 | { |
| 229 | *board_id = (svk_board_id)(val & 0x7); |
| 230 | *mode = (svk_mode)((val >> 4) & 0xF); |
| 231 | } |
| 232 | |
| 233 | return rc; |
| 234 | } |
| 235 | |
| 236 | static bcmos_errno i2c_device_cpu_state_set(bcmolt_devid device, bcmos_bool is_on) |
| 237 | { |
| 238 | bcmos_errno rc; |
| 239 | uint32_t reset_values; |
| 240 | |
| 241 | /* Prevent race condition when this function is called for 2 devices simultaneously */ |
| 242 | userlock_lock(); |
| 243 | |
| 244 | do |
| 245 | { |
| 246 | rc = i2c_config_switch(); |
| 247 | if (rc) |
| 248 | break; |
| 249 | |
| 250 | /* Read-modify-write so we can set only the relevant bit */ |
| 251 | rc = i2c_fpga_read(FPGA_REG_RESETS, &reset_values); |
| 252 | if (rc) |
| 253 | break; |
| 254 | |
| 255 | if (is_on) |
| 256 | reset_values |= FPGA_DEVICE_RESET_BIT(device); |
| 257 | else |
| 258 | reset_values &= ~FPGA_DEVICE_RESET_BIT(device); |
| 259 | |
| 260 | rc = i2c_fpga_write(FPGA_REG_RESETS, reset_values); |
| 261 | |
| 262 | } while (0); |
| 263 | |
| 264 | userlock_unlock(); |
| 265 | |
| 266 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 267 | |
| 268 | bcmos_usleep(1000); |
| 269 | |
| 270 | return BCM_ERR_OK; |
| 271 | } |
| 272 | |
| 273 | static bcmos_bool bcmuser_system_mode_is_valid(bcmolt_system_mode system_mode, svk_board_id board_id, svk_mode svk_mode) |
| 274 | { |
| 275 | switch (board_id) |
| 276 | { |
| 277 | case SVK_BOARD_ID_1: |
| 278 | case SVK_BOARD_ID_3: |
| 279 | switch (svk_mode) |
| 280 | { |
| 281 | case SVK_MODE_GPON_16X: |
| 282 | return (system_mode == BCMOLT_SYSTEM_MODE_GPON__4_X || |
| 283 | system_mode == BCMOLT_SYSTEM_MODE_GPON__8_X || |
| 284 | system_mode == BCMOLT_SYSTEM_MODE_GPON__16_X || |
| 285 | system_mode == BCMOLT_SYSTEM_MODE_GPON_8_XGPON_4_X_COEXISTENCE || |
| 286 | system_mode == BCMOLT_SYSTEM_MODE_XGPON_1__8_X || |
| 287 | system_mode == BCMOLT_SYSTEM_MODE_XGPON_1__4_X || |
| 288 | system_mode == BCMOLT_SYSTEM_MODE_NGPON2__8_X_2_P_5_G); |
| 289 | case SVK_MODE_EPON_1G_16X: |
| 290 | return (system_mode == BCMOLT_SYSTEM_MODE_EPON__4_X || |
| 291 | system_mode == BCMOLT_SYSTEM_MODE_EPON__8_X || |
| 292 | system_mode == BCMOLT_SYSTEM_MODE_EPON__16_X || |
| 293 | system_mode == BCMOLT_SYSTEM_MODE_EPON__2_X_10_G || |
| 294 | system_mode == BCMOLT_SYSTEM_MODE_EPON__4_X_10_G || |
| 295 | system_mode == BCMOLT_SYSTEM_MODE_EPON__8_X_10_G); |
| 296 | case SVK_MODE_XGPON: |
| 297 | return (system_mode == BCMOLT_SYSTEM_MODE_XGPON_1__8_X || |
| 298 | system_mode == BCMOLT_SYSTEM_MODE_XGPON_1__4_X || |
| 299 | system_mode == BCMOLT_SYSTEM_MODE_NGPON2__8_X_2_P_5_G); |
| 300 | case SVK_MODE_EPON_10G_8X: |
| 301 | return |
| 302 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__4_X_COEXISTENCE_TDMA) || |
| 303 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__8_X_COEXISTENCE_TDMA) || |
| 304 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__2_X_10_G) || |
| 305 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__4_X_10_G) || |
| 306 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__8_X_10_G); |
| 307 | default: |
| 308 | return BCMOS_FALSE; |
| 309 | } |
| 310 | case SVK_BOARD_ID_2_XG: |
| 311 | return (system_mode == BCMOLT_SYSTEM_MODE_XGPON_1__8_X || |
| 312 | system_mode == BCMOLT_SYSTEM_MODE_XGPON_1__4_X || |
| 313 | system_mode == BCMOLT_SYSTEM_MODE_NGPON2__8_X_2_P_5_G || |
| 314 | system_mode == BCMOLT_SYSTEM_MODE_XGS__2_X_10_G || |
| 315 | system_mode == BCMOLT_SYSTEM_MODE_NGPON2__2_X_10_G); |
| 316 | case SVK_BOARD_ID_2_XE: |
| 317 | return |
| 318 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__4_X_COEXISTENCE_TDMA) || |
| 319 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__8_X_COEXISTENCE_TDMA) || |
| 320 | (system_mode == BCMOLT_SYSTEM_MODE_AE_8_X) || |
| 321 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__2_X_10_G) || |
| 322 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__4_X_10_G) || |
| 323 | (system_mode == BCMOLT_SYSTEM_MODE_EPON__8_X_10_G); |
| 324 | case DVT_BOARD_ID: |
| 325 | return BCMOS_TRUE; |
| 326 | default: |
| 327 | return BCMOS_FALSE; |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | bcmos_errno bcmuser_system_mode_validate(bcmolt_devid device, bcmolt_system_mode system_mode) |
| 332 | { |
| 333 | bcmos_errno rc; |
| 334 | uint32_t version; |
| 335 | svk_board_id board_id; |
| 336 | svk_mode svk_mode; |
| 337 | |
| 338 | rc = i2c_config_switch(); |
| 339 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 340 | |
| 341 | rc = i2c_fpga_version_get(&version); |
| 342 | if (rc != BCM_ERR_OK) |
| 343 | { |
| 344 | BCMOS_TRACE_INFO("Failed to read FPGA version\n"); |
| 345 | return rc; |
| 346 | } |
| 347 | |
| 348 | if (version < FPGA_VER_FOR_SVK_CONFIG) |
| 349 | { |
| 350 | /* this FPGA version don't support reading the SVK version, so we must assume it's OK */ |
| 351 | return BCM_ERR_OK; |
| 352 | } |
| 353 | |
| 354 | rc = i2c_svk_config_get(&board_id, &svk_mode); |
| 355 | if (rc != BCM_ERR_OK) |
| 356 | { |
| 357 | BCMOS_TRACE_INFO("Failed to read SVK config\n"); |
| 358 | return rc; |
| 359 | } |
| 360 | |
| 361 | if (bcmuser_system_mode_is_valid(system_mode, board_id, svk_mode)) |
| 362 | { |
| 363 | return BCM_ERR_OK; |
| 364 | } |
| 365 | else |
| 366 | { |
| 367 | BCMOS_TRACE_INFO( |
| 368 | "System mode %s is not supported for board ID %d, SVK mode %d\n", |
| 369 | bcmolt_system_mode_name(system_mode), |
| 370 | board_id, |
| 371 | svk_mode); |
| 372 | return BCM_ERR_NOT_SUPPORTED; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | int bcmuser_image_read(bcmolt_devid device, bcmolt_device_image_type image_type, |
| 377 | uint32_t offset, uint8_t *buf, uint32_t buf_size) |
| 378 | { |
| 379 | struct file *fd; |
| 380 | int bytes_read; |
| 381 | bcmos_errno rc; |
| 382 | static int2str_t image_type2str[] = |
| 383 | { |
| 384 | {BCMOLT_DEVICE_IMAGE_TYPE_BOOTLOADER, BOOT_FILE}, |
| 385 | {BCMOLT_DEVICE_IMAGE_TYPE_APPLICATION, APPL_FILE}, |
| 386 | {BCMOLT_DEVICE_IMAGE_TYPE_ITU_PON_ONU_FIRMWARE, ONU_FW_FILE}, |
| 387 | {-1} |
| 388 | }; |
| 389 | const char *filename; |
| 390 | |
| 391 | filename = int2str(image_type2str, image_type); |
| 392 | fd = file_open(filename, O_RDONLY); |
| 393 | if ((fd == NULL) || (fd == (void *)-ENOENT)) /* -ENOENT; No such file or directory */ |
| 394 | { |
| 395 | rc = (fd == NULL ? BCM_ERR_NULL : BCM_ERR_NOENT); |
| 396 | BCMOS_TRACE_ERR("filp_open returned error %s (%d)\n", bcmos_strerror(rc), rc); |
| 397 | return rc; |
| 398 | } |
| 399 | bytes_read = file_read(fd, offset, buf, buf_size); |
| 400 | file_close(fd); |
| 401 | if (bytes_read < 0) |
| 402 | { |
| 403 | return (int)BCM_ERR_IO; |
| 404 | } |
| 405 | return bytes_read; |
| 406 | } |
| 407 | |
| 408 | bcmos_errno bcmuser_device_off(bcmolt_devid device) |
| 409 | { |
| 410 | /* Ignore request for non-existing device */ |
| 411 | if (device >= bcmolt_board_num_maple_devices()) |
| 412 | return BCM_ERR_OK; |
| 413 | BCMOS_TRACE_INFO("device=%u\n", device); |
| 414 | return i2c_device_cpu_state_set(device, BCMOS_FALSE); |
| 415 | } |
| 416 | |
| 417 | bcmos_errno bcmuser_device_on(bcmolt_devid device) |
| 418 | { |
| 419 | bcmos_errno rc; |
| 420 | |
| 421 | BCMOS_TRACE_INFO("device=%u\n", device); |
| 422 | if (device >= bcmolt_board_num_maple_devices()) |
| 423 | return BCM_ERR_RANGE; |
| 424 | |
| 425 | rc = i2c_device_cpu_state_set(device, BCMOS_TRUE); |
| 426 | /* Wait a moment to make sure the device is discoverable in case it just booted. */ |
| 427 | bcmos_usleep(50 * 1000); |
| 428 | |
| 429 | return rc; |
| 430 | } |
| 431 | |
| 432 | bcmos_errno bcmuser_device_is_running(bcmolt_devid device, bcmos_bool *is_running) |
| 433 | { |
| 434 | bcmos_errno rc; |
| 435 | uint32_t reset_values; |
| 436 | uint32_t version; |
| 437 | |
| 438 | rc = i2c_config_switch(); |
| 439 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 440 | |
| 441 | rc = i2c_fpga_version_get(&version); |
| 442 | if (rc != BCM_ERR_OK) |
| 443 | { |
| 444 | BCMOS_TRACE_INFO("Failed to read FPGA version\n"); |
| 445 | return rc; |
| 446 | } |
| 447 | if (!bcmolt_board_supports_standalone(version)) |
| 448 | { |
| 449 | /* For older FPGAs that don't support standalone mode, the device is taken out of reset at boot. We need to lie |
| 450 | and tell device control that it's not running, so it will be programmed from scratch. */ |
| 451 | BCMOS_TRACE_INFO("FPGA version %d doesn't support standalone mode\n", version); |
| 452 | *is_running = BCMOS_FALSE; |
| 453 | return BCM_ERR_OK; |
| 454 | } |
| 455 | |
| 456 | rc = i2c_fpga_read(FPGA_REG_RESETS, &reset_values); |
| 457 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 458 | |
| 459 | *is_running = ((reset_values & FPGA_DEVICE_RESET_BIT(device)) != 0); |
| 460 | |
| 461 | return BCM_ERR_OK; |
| 462 | } |
| 463 | |
| 464 | bcmos_errno bcmuser_host_reset(void) |
| 465 | { |
| 466 | bcm_ll_pcie_cleanup(); |
| 467 | kernel_restart(NULL); |
| 468 | return BCM_ERR_OK; /* will never be reached */ |
| 469 | } |
| 470 | |
| 471 | bcmos_errno bcmuser_pcie_prepare(void) |
| 472 | { |
| 473 | bcmos_errno rc; |
| 474 | uint32_t reset_values; |
| 475 | const char *pcie_rescan_file = bcmolt_board_pci_rescan_string_get(); |
| 476 | int i; |
| 477 | |
| 478 | /* - Take all devices out of reset |
| 479 | * - rescan bus |
| 480 | * - restore reset value |
| 481 | */ |
| 482 | |
| 483 | rc = i2c_config_switch(); |
| 484 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 485 | |
| 486 | /* Read-modify-write so we can set only the relevant bit */ |
| 487 | rc = i2c_fpga_read(FPGA_REG_RESETS, &reset_values); |
| 488 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 489 | |
| 490 | rc = i2c_fpga_write(FPGA_REG_RESETS, FPGA_ENABLE_ALL_DEVICES); |
| 491 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 492 | |
| 493 | bcmos_usleep(50000); |
| 494 | |
| 495 | /* Now recan PCI bus */ |
| 496 | /* Now re-enumerate the PCI bus by writing a 1 to the 'rescan' file. */ |
| 497 | rc = file_write_1(pcie_rescan_file); |
| 498 | if (rc != BCM_ERR_OK) |
| 499 | BCMOS_TRACE_ERR("file write returned error %s (%d)\n", bcmos_strerror(rc), rc); |
| 500 | bcmos_usleep(100 * 1000); |
| 501 | |
| 502 | /* Now initialize ll_pcie driver and map maple devices */ |
| 503 | rc = bcm_ll_pcie_init(); |
| 504 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 505 | |
| 506 | /* Now restore rest values. Keep switch out of reset */ |
| 507 | for (i = 0; i < bcmolt_board_num_maple_devices(); i++) |
| 508 | { |
| 509 | if ((FPGA_DEVICE_RESET_BIT(i) & reset_values) == 0) |
| 510 | bcmuser_pcie_channel_remove(i); |
| 511 | } |
| 512 | rc = i2c_fpga_write(FPGA_REG_RESETS, reset_values | FPGA_ENABLE_SWITCH); |
| 513 | CHECK_RETURN_ERROR(rc != BCM_ERR_OK, rc); |
| 514 | |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | bcmos_errno bcmuser_pcie_channel_prepare(bcmolt_devid device) |
| 519 | { |
| 520 | bcmos_errno rc; |
| 521 | |
| 522 | rc = bcm_ll_pcie_dev_enable(device); |
| 523 | if (rc) |
| 524 | BCMOS_TRACE_ERR("Couldn't prepare device %d. Error %s\n", device, bcmos_strerror(rc)); |
| 525 | |
| 526 | return rc; |
| 527 | } |
| 528 | |
| 529 | bcmos_errno bcmuser_pcie_channel_remove(bcmolt_devid device) |
| 530 | { |
| 531 | bcm_ll_pcie_dev_disable(device); |
| 532 | return BCM_ERR_OK; |
| 533 | } |