pch_phub.c revision b259514282d54323aaadead3dac4823ea01f9b89
1/* 2 * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; version 2 of the License. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program; if not, write to the Free Software 15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 16 */ 17 18#include <linux/module.h> 19#include <linux/kernel.h> 20#include <linux/types.h> 21#include <linux/fs.h> 22#include <linux/uaccess.h> 23#include <linux/string.h> 24#include <linux/pci.h> 25#include <linux/io.h> 26#include <linux/delay.h> 27#include <linux/mutex.h> 28#include <linux/if_ether.h> 29#include <linux/ctype.h> 30#include <linux/dmi.h> 31 32#define PHUB_STATUS 0x00 /* Status Register offset */ 33#define PHUB_CONTROL 0x04 /* Control Register offset */ 34#define PHUB_TIMEOUT 0x05 /* Time out value for Status Register */ 35#define PCH_PHUB_ROM_WRITE_ENABLE 0x01 /* Enabling for writing ROM */ 36#define PCH_PHUB_ROM_WRITE_DISABLE 0x00 /* Disabling for writing ROM */ 37#define PCH_PHUB_MAC_START_ADDR 0x20C /* MAC data area start address offset */ 38#define PCH_PHUB_ROM_START_ADDR_EG20T 0x14 /* ROM data area start address offset 39 (Intel EG20T PCH)*/ 40#define PCH_PHUB_ROM_START_ADDR_ML7213 0x400 /* ROM data area start address 41 offset(OKI SEMICONDUCTOR ML7213) 42 */ 43 44/* MAX number of INT_REDUCE_CONTROL registers */ 45#define MAX_NUM_INT_REDUCE_CONTROL_REG 128 46#define PCI_DEVICE_ID_PCH1_PHUB 0x8801 47#define PCH_MINOR_NOS 1 48#define CLKCFG_CAN_50MHZ 0x12000000 49#define CLKCFG_CANCLK_MASK 0xFF000000 50#define CLKCFG_UART_MASK 0xFFFFFF 51 52/* CM-iTC */ 53#define CLKCFG_UART_48MHZ (1 << 16) 54#define CLKCFG_BAUDDIV (2 << 20) 55#define CLKCFG_PLL2VCO (8 << 9) 56#define CLKCFG_UARTCLKSEL (1 << 18) 57 58/* Macros for ML7213 */ 59#define PCI_VENDOR_ID_ROHM 0x10db 60#define PCI_DEVICE_ID_ROHM_ML7213_PHUB 0x801A 61 62/* Macros for ML7213 */ 63#define PCI_VENDOR_ID_ROHM 0x10db 64#define PCI_DEVICE_ID_ROHM_ML7213_PHUB 0x801A 65 66/* SROM ACCESS Macro */ 67#define PCH_WORD_ADDR_MASK (~((1 << 2) - 1)) 68 69/* Registers address offset */ 70#define PCH_PHUB_ID_REG 0x0000 71#define PCH_PHUB_QUEUE_PRI_VAL_REG 0x0004 72#define PCH_PHUB_RC_QUEUE_MAXSIZE_REG 0x0008 73#define PCH_PHUB_BRI_QUEUE_MAXSIZE_REG 0x000C 74#define PCH_PHUB_COMP_RESP_TIMEOUT_REG 0x0010 75#define PCH_PHUB_BUS_SLAVE_CONTROL_REG 0x0014 76#define PCH_PHUB_DEADLOCK_AVOID_TYPE_REG 0x0018 77#define PCH_PHUB_INTPIN_REG_WPERMIT_REG0 0x0020 78#define PCH_PHUB_INTPIN_REG_WPERMIT_REG1 0x0024 79#define PCH_PHUB_INTPIN_REG_WPERMIT_REG2 0x0028 80#define PCH_PHUB_INTPIN_REG_WPERMIT_REG3 0x002C 81#define PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE 0x0040 82#define CLKCFG_REG_OFFSET 0x500 83 84#define PCH_PHUB_OROM_SIZE 15360 85 86/** 87 * struct pch_phub_reg - PHUB register structure 88 * @phub_id_reg: PHUB_ID register val 89 * @q_pri_val_reg: QUEUE_PRI_VAL register val 90 * @rc_q_maxsize_reg: RC_QUEUE_MAXSIZE register val 91 * @bri_q_maxsize_reg: BRI_QUEUE_MAXSIZE register val 92 * @comp_resp_timeout_reg: COMP_RESP_TIMEOUT register val 93 * @bus_slave_control_reg: BUS_SLAVE_CONTROL_REG register val 94 * @deadlock_avoid_type_reg: DEADLOCK_AVOID_TYPE register val 95 * @intpin_reg_wpermit_reg0: INTPIN_REG_WPERMIT register 0 val 96 * @intpin_reg_wpermit_reg1: INTPIN_REG_WPERMIT register 1 val 97 * @intpin_reg_wpermit_reg2: INTPIN_REG_WPERMIT register 2 val 98 * @intpin_reg_wpermit_reg3: INTPIN_REG_WPERMIT register 3 val 99 * @int_reduce_control_reg: INT_REDUCE_CONTROL registers val 100 * @clkcfg_reg: CLK CFG register val 101 * @pch_phub_base_address: Register base address 102 * @pch_phub_extrom_base_address: external rom base address 103 */ 104struct pch_phub_reg { 105 u32 phub_id_reg; 106 u32 q_pri_val_reg; 107 u32 rc_q_maxsize_reg; 108 u32 bri_q_maxsize_reg; 109 u32 comp_resp_timeout_reg; 110 u32 bus_slave_control_reg; 111 u32 deadlock_avoid_type_reg; 112 u32 intpin_reg_wpermit_reg0; 113 u32 intpin_reg_wpermit_reg1; 114 u32 intpin_reg_wpermit_reg2; 115 u32 intpin_reg_wpermit_reg3; 116 u32 int_reduce_control_reg[MAX_NUM_INT_REDUCE_CONTROL_REG]; 117 u32 clkcfg_reg; 118 void __iomem *pch_phub_base_address; 119 void __iomem *pch_phub_extrom_base_address; 120}; 121 122/* SROM SPEC for MAC address assignment offset */ 123static const int pch_phub_mac_offset[ETH_ALEN] = {0x3, 0x2, 0x1, 0x0, 0xb, 0xa}; 124 125static DEFINE_MUTEX(pch_phub_mutex); 126 127/** 128 * pch_phub_read_modify_write_reg() - Reading modifying and writing register 129 * @reg_addr_offset: Register offset address value. 130 * @data: Writing value. 131 * @mask: Mask value. 132 */ 133static void pch_phub_read_modify_write_reg(struct pch_phub_reg *chip, 134 unsigned int reg_addr_offset, 135 unsigned int data, unsigned int mask) 136{ 137 void __iomem *reg_addr = chip->pch_phub_base_address + reg_addr_offset; 138 iowrite32(((ioread32(reg_addr) & ~mask)) | data, reg_addr); 139} 140 141/* pch_phub_save_reg_conf - saves register configuration */ 142static void pch_phub_save_reg_conf(struct pci_dev *pdev) 143{ 144 unsigned int i; 145 struct pch_phub_reg *chip = pci_get_drvdata(pdev); 146 147 void __iomem *p = chip->pch_phub_base_address; 148 149 chip->phub_id_reg = ioread32(p + PCH_PHUB_ID_REG); 150 chip->q_pri_val_reg = ioread32(p + PCH_PHUB_QUEUE_PRI_VAL_REG); 151 chip->rc_q_maxsize_reg = ioread32(p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG); 152 chip->bri_q_maxsize_reg = ioread32(p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG); 153 chip->comp_resp_timeout_reg = 154 ioread32(p + PCH_PHUB_COMP_RESP_TIMEOUT_REG); 155 chip->bus_slave_control_reg = 156 ioread32(p + PCH_PHUB_BUS_SLAVE_CONTROL_REG); 157 chip->deadlock_avoid_type_reg = 158 ioread32(p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG); 159 chip->intpin_reg_wpermit_reg0 = 160 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0); 161 chip->intpin_reg_wpermit_reg1 = 162 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1); 163 chip->intpin_reg_wpermit_reg2 = 164 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2); 165 chip->intpin_reg_wpermit_reg3 = 166 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3); 167 dev_dbg(&pdev->dev, "%s : " 168 "chip->phub_id_reg=%x, " 169 "chip->q_pri_val_reg=%x, " 170 "chip->rc_q_maxsize_reg=%x, " 171 "chip->bri_q_maxsize_reg=%x, " 172 "chip->comp_resp_timeout_reg=%x, " 173 "chip->bus_slave_control_reg=%x, " 174 "chip->deadlock_avoid_type_reg=%x, " 175 "chip->intpin_reg_wpermit_reg0=%x, " 176 "chip->intpin_reg_wpermit_reg1=%x, " 177 "chip->intpin_reg_wpermit_reg2=%x, " 178 "chip->intpin_reg_wpermit_reg3=%x\n", __func__, 179 chip->phub_id_reg, 180 chip->q_pri_val_reg, 181 chip->rc_q_maxsize_reg, 182 chip->bri_q_maxsize_reg, 183 chip->comp_resp_timeout_reg, 184 chip->bus_slave_control_reg, 185 chip->deadlock_avoid_type_reg, 186 chip->intpin_reg_wpermit_reg0, 187 chip->intpin_reg_wpermit_reg1, 188 chip->intpin_reg_wpermit_reg2, 189 chip->intpin_reg_wpermit_reg3); 190 for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) { 191 chip->int_reduce_control_reg[i] = 192 ioread32(p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i); 193 dev_dbg(&pdev->dev, "%s : " 194 "chip->int_reduce_control_reg[%d]=%x\n", 195 __func__, i, chip->int_reduce_control_reg[i]); 196 } 197 chip->clkcfg_reg = ioread32(p + CLKCFG_REG_OFFSET); 198} 199 200/* pch_phub_restore_reg_conf - restore register configuration */ 201static void pch_phub_restore_reg_conf(struct pci_dev *pdev) 202{ 203 unsigned int i; 204 struct pch_phub_reg *chip = pci_get_drvdata(pdev); 205 void __iomem *p; 206 p = chip->pch_phub_base_address; 207 208 iowrite32(chip->phub_id_reg, p + PCH_PHUB_ID_REG); 209 iowrite32(chip->q_pri_val_reg, p + PCH_PHUB_QUEUE_PRI_VAL_REG); 210 iowrite32(chip->rc_q_maxsize_reg, p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG); 211 iowrite32(chip->bri_q_maxsize_reg, p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG); 212 iowrite32(chip->comp_resp_timeout_reg, 213 p + PCH_PHUB_COMP_RESP_TIMEOUT_REG); 214 iowrite32(chip->bus_slave_control_reg, 215 p + PCH_PHUB_BUS_SLAVE_CONTROL_REG); 216 iowrite32(chip->deadlock_avoid_type_reg, 217 p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG); 218 iowrite32(chip->intpin_reg_wpermit_reg0, 219 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0); 220 iowrite32(chip->intpin_reg_wpermit_reg1, 221 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1); 222 iowrite32(chip->intpin_reg_wpermit_reg2, 223 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2); 224 iowrite32(chip->intpin_reg_wpermit_reg3, 225 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3); 226 dev_dbg(&pdev->dev, "%s : " 227 "chip->phub_id_reg=%x, " 228 "chip->q_pri_val_reg=%x, " 229 "chip->rc_q_maxsize_reg=%x, " 230 "chip->bri_q_maxsize_reg=%x, " 231 "chip->comp_resp_timeout_reg=%x, " 232 "chip->bus_slave_control_reg=%x, " 233 "chip->deadlock_avoid_type_reg=%x, " 234 "chip->intpin_reg_wpermit_reg0=%x, " 235 "chip->intpin_reg_wpermit_reg1=%x, " 236 "chip->intpin_reg_wpermit_reg2=%x, " 237 "chip->intpin_reg_wpermit_reg3=%x\n", __func__, 238 chip->phub_id_reg, 239 chip->q_pri_val_reg, 240 chip->rc_q_maxsize_reg, 241 chip->bri_q_maxsize_reg, 242 chip->comp_resp_timeout_reg, 243 chip->bus_slave_control_reg, 244 chip->deadlock_avoid_type_reg, 245 chip->intpin_reg_wpermit_reg0, 246 chip->intpin_reg_wpermit_reg1, 247 chip->intpin_reg_wpermit_reg2, 248 chip->intpin_reg_wpermit_reg3); 249 for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) { 250 iowrite32(chip->int_reduce_control_reg[i], 251 p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i); 252 dev_dbg(&pdev->dev, "%s : " 253 "chip->int_reduce_control_reg[%d]=%x\n", 254 __func__, i, chip->int_reduce_control_reg[i]); 255 } 256 257 iowrite32(chip->clkcfg_reg, p + CLKCFG_REG_OFFSET); 258} 259 260/** 261 * pch_phub_read_serial_rom() - Reading Serial ROM 262 * @offset_address: Serial ROM offset address to read. 263 * @data: Read buffer for specified Serial ROM value. 264 */ 265static void pch_phub_read_serial_rom(struct pch_phub_reg *chip, 266 unsigned int offset_address, u8 *data) 267{ 268 void __iomem *mem_addr = chip->pch_phub_extrom_base_address + 269 offset_address; 270 271 *data = ioread8(mem_addr); 272} 273 274/** 275 * pch_phub_write_serial_rom() - Writing Serial ROM 276 * @offset_address: Serial ROM offset address. 277 * @data: Serial ROM value to write. 278 */ 279static int pch_phub_write_serial_rom(struct pch_phub_reg *chip, 280 unsigned int offset_address, u8 data) 281{ 282 void __iomem *mem_addr = chip->pch_phub_extrom_base_address + 283 (offset_address & PCH_WORD_ADDR_MASK); 284 int i; 285 unsigned int word_data; 286 unsigned int pos; 287 unsigned int mask; 288 pos = (offset_address % 4) * 8; 289 mask = ~(0xFF << pos); 290 291 iowrite32(PCH_PHUB_ROM_WRITE_ENABLE, 292 chip->pch_phub_extrom_base_address + PHUB_CONTROL); 293 294 word_data = ioread32(mem_addr); 295 iowrite32((word_data & mask) | (u32)data << pos, mem_addr); 296 297 i = 0; 298 while (ioread8(chip->pch_phub_extrom_base_address + 299 PHUB_STATUS) != 0x00) { 300 msleep(1); 301 if (i == PHUB_TIMEOUT) 302 return -ETIMEDOUT; 303 i++; 304 } 305 306 iowrite32(PCH_PHUB_ROM_WRITE_DISABLE, 307 chip->pch_phub_extrom_base_address + PHUB_CONTROL); 308 309 return 0; 310} 311 312/** 313 * pch_phub_read_serial_rom_val() - Read Serial ROM value 314 * @offset_address: Serial ROM address offset value. 315 * @data: Serial ROM value to read. 316 */ 317static void pch_phub_read_serial_rom_val(struct pch_phub_reg *chip, 318 unsigned int offset_address, u8 *data) 319{ 320 unsigned int mem_addr; 321 322 mem_addr = PCH_PHUB_ROM_START_ADDR_EG20T + 323 pch_phub_mac_offset[offset_address]; 324 325 pch_phub_read_serial_rom(chip, mem_addr, data); 326} 327 328/** 329 * pch_phub_write_serial_rom_val() - writing Serial ROM value 330 * @offset_address: Serial ROM address offset value. 331 * @data: Serial ROM value. 332 */ 333static int pch_phub_write_serial_rom_val(struct pch_phub_reg *chip, 334 unsigned int offset_address, u8 data) 335{ 336 int retval; 337 unsigned int mem_addr; 338 339 mem_addr = PCH_PHUB_ROM_START_ADDR_EG20T + 340 pch_phub_mac_offset[offset_address]; 341 342 retval = pch_phub_write_serial_rom(chip, mem_addr, data); 343 344 return retval; 345} 346 347/* pch_phub_gbe_serial_rom_conf - makes Serial ROM header format configuration 348 * for Gigabit Ethernet MAC address 349 */ 350static int pch_phub_gbe_serial_rom_conf(struct pch_phub_reg *chip) 351{ 352 int retval; 353 354 retval = pch_phub_write_serial_rom(chip, 0x0b, 0xbc); 355 retval |= pch_phub_write_serial_rom(chip, 0x0a, 0x10); 356 retval |= pch_phub_write_serial_rom(chip, 0x09, 0x01); 357 retval |= pch_phub_write_serial_rom(chip, 0x08, 0x02); 358 359 retval |= pch_phub_write_serial_rom(chip, 0x0f, 0x00); 360 retval |= pch_phub_write_serial_rom(chip, 0x0e, 0x00); 361 retval |= pch_phub_write_serial_rom(chip, 0x0d, 0x00); 362 retval |= pch_phub_write_serial_rom(chip, 0x0c, 0x80); 363 364 retval |= pch_phub_write_serial_rom(chip, 0x13, 0xbc); 365 retval |= pch_phub_write_serial_rom(chip, 0x12, 0x10); 366 retval |= pch_phub_write_serial_rom(chip, 0x11, 0x01); 367 retval |= pch_phub_write_serial_rom(chip, 0x10, 0x18); 368 369 retval |= pch_phub_write_serial_rom(chip, 0x1b, 0xbc); 370 retval |= pch_phub_write_serial_rom(chip, 0x1a, 0x10); 371 retval |= pch_phub_write_serial_rom(chip, 0x19, 0x01); 372 retval |= pch_phub_write_serial_rom(chip, 0x18, 0x19); 373 374 retval |= pch_phub_write_serial_rom(chip, 0x23, 0xbc); 375 retval |= pch_phub_write_serial_rom(chip, 0x22, 0x10); 376 retval |= pch_phub_write_serial_rom(chip, 0x21, 0x01); 377 retval |= pch_phub_write_serial_rom(chip, 0x20, 0x3a); 378 379 retval |= pch_phub_write_serial_rom(chip, 0x27, 0x01); 380 retval |= pch_phub_write_serial_rom(chip, 0x26, 0x00); 381 retval |= pch_phub_write_serial_rom(chip, 0x25, 0x00); 382 retval |= pch_phub_write_serial_rom(chip, 0x24, 0x00); 383 384 return retval; 385} 386 387/** 388 * pch_phub_read_gbe_mac_addr() - Read Gigabit Ethernet MAC address 389 * @offset_address: Gigabit Ethernet MAC address offset value. 390 * @data: Buffer of the Gigabit Ethernet MAC address value. 391 */ 392static void pch_phub_read_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data) 393{ 394 int i; 395 for (i = 0; i < ETH_ALEN; i++) 396 pch_phub_read_serial_rom_val(chip, i, &data[i]); 397} 398 399/** 400 * pch_phub_write_gbe_mac_addr() - Write MAC address 401 * @offset_address: Gigabit Ethernet MAC address offset value. 402 * @data: Gigabit Ethernet MAC address value. 403 */ 404static int pch_phub_write_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data) 405{ 406 int retval; 407 int i; 408 409 retval = pch_phub_gbe_serial_rom_conf(chip); 410 if (retval) 411 return retval; 412 413 for (i = 0; i < ETH_ALEN; i++) { 414 retval = pch_phub_write_serial_rom_val(chip, i, data[i]); 415 if (retval) 416 return retval; 417 } 418 419 return retval; 420} 421 422static ssize_t pch_phub_bin_read(struct file *filp, struct kobject *kobj, 423 struct bin_attribute *attr, char *buf, 424 loff_t off, size_t count) 425{ 426 unsigned int rom_signature; 427 unsigned char rom_length; 428 unsigned int tmp; 429 unsigned int addr_offset; 430 unsigned int orom_size; 431 int ret; 432 int err; 433 434 struct pch_phub_reg *chip = 435 dev_get_drvdata(container_of(kobj, struct device, kobj)); 436 437 ret = mutex_lock_interruptible(&pch_phub_mutex); 438 if (ret) { 439 err = -ERESTARTSYS; 440 goto return_err_nomutex; 441 } 442 443 /* Get Rom signature */ 444 pch_phub_read_serial_rom(chip, 0x80, (unsigned char *)&rom_signature); 445 rom_signature &= 0xff; 446 pch_phub_read_serial_rom(chip, 0x81, (unsigned char *)&tmp); 447 rom_signature |= (tmp & 0xff) << 8; 448 if (rom_signature == 0xAA55) { 449 pch_phub_read_serial_rom(chip, 0x82, &rom_length); 450 orom_size = rom_length * 512; 451 if (orom_size < off) { 452 addr_offset = 0; 453 goto return_ok; 454 } 455 if (orom_size < count) { 456 addr_offset = 0; 457 goto return_ok; 458 } 459 460 for (addr_offset = 0; addr_offset < count; addr_offset++) { 461 pch_phub_read_serial_rom(chip, 0x80 + addr_offset + off, 462 &buf[addr_offset]); 463 } 464 } else { 465 err = -ENODATA; 466 goto return_err; 467 } 468return_ok: 469 mutex_unlock(&pch_phub_mutex); 470 return addr_offset; 471 472return_err: 473 mutex_unlock(&pch_phub_mutex); 474return_err_nomutex: 475 return err; 476} 477 478static ssize_t pch_phub_bin_write(struct file *filp, struct kobject *kobj, 479 struct bin_attribute *attr, 480 char *buf, loff_t off, size_t count) 481{ 482 int err; 483 unsigned int addr_offset; 484 int ret; 485 struct pch_phub_reg *chip = 486 dev_get_drvdata(container_of(kobj, struct device, kobj)); 487 488 ret = mutex_lock_interruptible(&pch_phub_mutex); 489 if (ret) 490 return -ERESTARTSYS; 491 492 if (off > PCH_PHUB_OROM_SIZE) { 493 addr_offset = 0; 494 goto return_ok; 495 } 496 if (count > PCH_PHUB_OROM_SIZE) { 497 addr_offset = 0; 498 goto return_ok; 499 } 500 501 for (addr_offset = 0; addr_offset < count; addr_offset++) { 502 if (PCH_PHUB_OROM_SIZE < off + addr_offset) 503 goto return_ok; 504 505 ret = pch_phub_write_serial_rom(chip, 0x80 + addr_offset + off, 506 buf[addr_offset]); 507 if (ret) { 508 err = ret; 509 goto return_err; 510 } 511 } 512 513return_ok: 514 mutex_unlock(&pch_phub_mutex); 515 return addr_offset; 516 517return_err: 518 mutex_unlock(&pch_phub_mutex); 519 return err; 520} 521 522static ssize_t show_pch_mac(struct device *dev, struct device_attribute *attr, 523 char *buf) 524{ 525 u8 mac[8]; 526 struct pch_phub_reg *chip = dev_get_drvdata(dev); 527 528 pch_phub_read_gbe_mac_addr(chip, mac); 529 530 return sprintf(buf, "%02x:%02x:%02x:%02x:%02x:%02x\n", 531 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); 532} 533 534static ssize_t store_pch_mac(struct device *dev, struct device_attribute *attr, 535 const char *buf, size_t count) 536{ 537 u8 mac[6]; 538 struct pch_phub_reg *chip = dev_get_drvdata(dev); 539 540 if (count != 18) 541 return -EINVAL; 542 543 sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x", 544 (u32 *)&mac[0], (u32 *)&mac[1], (u32 *)&mac[2], (u32 *)&mac[3], 545 (u32 *)&mac[4], (u32 *)&mac[5]); 546 547 pch_phub_write_gbe_mac_addr(chip, mac); 548 549 return count; 550} 551 552static DEVICE_ATTR(pch_mac, S_IRUGO | S_IWUSR, show_pch_mac, store_pch_mac); 553 554static struct bin_attribute pch_bin_attr = { 555 .attr = { 556 .name = "pch_firmware", 557 .mode = S_IRUGO | S_IWUSR, 558 }, 559 .size = PCH_PHUB_OROM_SIZE + 1, 560 .read = pch_phub_bin_read, 561 .write = pch_phub_bin_write, 562}; 563 564static int __devinit pch_phub_probe(struct pci_dev *pdev, 565 const struct pci_device_id *id) 566{ 567 int retval; 568 569 int ret; 570 ssize_t rom_size; 571 struct pch_phub_reg *chip; 572 573 chip = kzalloc(sizeof(struct pch_phub_reg), GFP_KERNEL); 574 if (chip == NULL) 575 return -ENOMEM; 576 577 ret = pci_enable_device(pdev); 578 if (ret) { 579 dev_err(&pdev->dev, 580 "%s : pci_enable_device FAILED(ret=%d)", __func__, ret); 581 goto err_pci_enable_dev; 582 } 583 dev_dbg(&pdev->dev, "%s : pci_enable_device returns %d\n", __func__, 584 ret); 585 586 ret = pci_request_regions(pdev, KBUILD_MODNAME); 587 if (ret) { 588 dev_err(&pdev->dev, 589 "%s : pci_request_regions FAILED(ret=%d)", __func__, ret); 590 goto err_req_regions; 591 } 592 dev_dbg(&pdev->dev, "%s : " 593 "pci_request_regions returns %d\n", __func__, ret); 594 595 chip->pch_phub_base_address = pci_iomap(pdev, 1, 0); 596 597 598 if (chip->pch_phub_base_address == 0) { 599 dev_err(&pdev->dev, "%s : pci_iomap FAILED", __func__); 600 ret = -ENOMEM; 601 goto err_pci_iomap; 602 } 603 dev_dbg(&pdev->dev, "%s : pci_iomap SUCCESS and value " 604 "in pch_phub_base_address variable is %p\n", __func__, 605 chip->pch_phub_base_address); 606 chip->pch_phub_extrom_base_address = pci_map_rom(pdev, &rom_size); 607 608 if (chip->pch_phub_extrom_base_address == 0) { 609 dev_err(&pdev->dev, "%s : pci_map_rom FAILED", __func__); 610 ret = -ENOMEM; 611 goto err_pci_map; 612 } 613 dev_dbg(&pdev->dev, "%s : " 614 "pci_map_rom SUCCESS and value in " 615 "pch_phub_extrom_base_address variable is %p\n", __func__, 616 chip->pch_phub_extrom_base_address); 617 618 if (id->driver_data == 1) { 619 retval = sysfs_create_file(&pdev->dev.kobj, 620 &dev_attr_pch_mac.attr); 621 if (retval) 622 goto err_sysfs_create; 623 624 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr); 625 if (retval) 626 goto exit_bin_attr; 627 628 pch_phub_read_modify_write_reg(chip, 629 (unsigned int)CLKCFG_REG_OFFSET, 630 CLKCFG_CAN_50MHZ, 631 CLKCFG_CANCLK_MASK); 632 633 /* quirk for CM-iTC board */ 634 if (strstr(dmi_get_system_info(DMI_BOARD_NAME), "CM-iTC")) 635 pch_phub_read_modify_write_reg(chip, 636 (unsigned int)CLKCFG_REG_OFFSET, 637 CLKCFG_UART_48MHZ | CLKCFG_BAUDDIV | 638 CLKCFG_PLL2VCO | CLKCFG_UARTCLKSEL, 639 CLKCFG_UART_MASK); 640 641 /* set the prefech value */ 642 iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14); 643 /* set the interrupt delay value */ 644 iowrite32(0x25, chip->pch_phub_base_address + 0x44); 645 } else if (id->driver_data == 2) { 646 retval = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr); 647 if (retval) 648 goto err_sysfs_create; 649 /* set the prefech value 650 * Device2(USB OHCI #1/ USB EHCI #1/ USB Device):a 651 * Device4(SDIO #0,1,2):f 652 * Device6(SATA 2):f 653 * Device8(USB OHCI #0/ USB EHCI #0):a 654 */ 655 iowrite32(0x000affa0, chip->pch_phub_base_address + 0x14); 656 } 657 pci_set_drvdata(pdev, chip); 658 659 return 0; 660exit_bin_attr: 661 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr); 662 663err_sysfs_create: 664 pci_unmap_rom(pdev, chip->pch_phub_extrom_base_address); 665err_pci_map: 666 pci_iounmap(pdev, chip->pch_phub_base_address); 667err_pci_iomap: 668 pci_release_regions(pdev); 669err_req_regions: 670 pci_disable_device(pdev); 671err_pci_enable_dev: 672 kfree(chip); 673 dev_err(&pdev->dev, "%s returns %d\n", __func__, ret); 674 return ret; 675} 676 677static void __devexit pch_phub_remove(struct pci_dev *pdev) 678{ 679 struct pch_phub_reg *chip = pci_get_drvdata(pdev); 680 681 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr); 682 sysfs_remove_bin_file(&pdev->dev.kobj, &pch_bin_attr); 683 pci_unmap_rom(pdev, chip->pch_phub_extrom_base_address); 684 pci_iounmap(pdev, chip->pch_phub_base_address); 685 pci_release_regions(pdev); 686 pci_disable_device(pdev); 687 kfree(chip); 688} 689 690#ifdef CONFIG_PM 691 692static int pch_phub_suspend(struct pci_dev *pdev, pm_message_t state) 693{ 694 int ret; 695 696 pch_phub_save_reg_conf(pdev); 697 ret = pci_save_state(pdev); 698 if (ret) { 699 dev_err(&pdev->dev, 700 " %s -pci_save_state returns %d\n", __func__, ret); 701 return ret; 702 } 703 pci_enable_wake(pdev, PCI_D3hot, 0); 704 pci_disable_device(pdev); 705 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 706 707 return 0; 708} 709 710static int pch_phub_resume(struct pci_dev *pdev) 711{ 712 int ret; 713 714 pci_set_power_state(pdev, PCI_D0); 715 pci_restore_state(pdev); 716 ret = pci_enable_device(pdev); 717 if (ret) { 718 dev_err(&pdev->dev, 719 "%s-pci_enable_device failed(ret=%d) ", __func__, ret); 720 return ret; 721 } 722 723 pci_enable_wake(pdev, PCI_D3hot, 0); 724 pch_phub_restore_reg_conf(pdev); 725 726 return 0; 727} 728#else 729#define pch_phub_suspend NULL 730#define pch_phub_resume NULL 731#endif /* CONFIG_PM */ 732 733static struct pci_device_id pch_phub_pcidev_id[] = { 734 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH1_PHUB), 1, }, 735 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7213_PHUB), 2, }, 736 { } 737}; 738MODULE_DEVICE_TABLE(pci, pch_phub_pcidev_id); 739 740static struct pci_driver pch_phub_driver = { 741 .name = "pch_phub", 742 .id_table = pch_phub_pcidev_id, 743 .probe = pch_phub_probe, 744 .remove = __devexit_p(pch_phub_remove), 745 .suspend = pch_phub_suspend, 746 .resume = pch_phub_resume 747}; 748 749static int __init pch_phub_pci_init(void) 750{ 751 return pci_register_driver(&pch_phub_driver); 752} 753 754static void __exit pch_phub_pci_exit(void) 755{ 756 pci_unregister_driver(&pch_phub_driver); 757} 758 759module_init(pch_phub_pci_init); 760module_exit(pch_phub_pci_exit); 761 762MODULE_DESCRIPTION("PCH Packet Hub PCI Driver"); 763MODULE_LICENSE("GPL"); 764