1 /* 2 * Copyright (C) 2011 LAPIS 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 #include <linux/of.h> 32 33 #define PHUB_STATUS 0x00 /* Status Register offset */ 34 #define PHUB_CONTROL 0x04 /* Control Register offset */ 35 #define PHUB_TIMEOUT 0x05 /* Time out value for Status Register */ 36 #define PCH_PHUB_ROM_WRITE_ENABLE 0x01 /* Enabling for writing ROM */ 37 #define PCH_PHUB_ROM_WRITE_DISABLE 0x00 /* Disabling for writing ROM */ 38 #define PCH_PHUB_MAC_START_ADDR_EG20T 0x14 /* MAC data area start address 39 offset */ 40 #define PCH_PHUB_MAC_START_ADDR_ML7223 0x20C /* MAC data area start address 41 offset */ 42 #define PCH_PHUB_ROM_START_ADDR_EG20T 0x80 /* ROM data area start address offset 43 (Intel EG20T PCH)*/ 44 #define PCH_PHUB_ROM_START_ADDR_ML7213 0x400 /* ROM data area start address 45 offset(LAPIS Semicon ML7213) 46 */ 47 #define PCH_PHUB_ROM_START_ADDR_ML7223 0x400 /* ROM data area start address 48 offset(LAPIS Semicon ML7223) 49 */ 50 51 /* MAX number of INT_REDUCE_CONTROL registers */ 52 #define MAX_NUM_INT_REDUCE_CONTROL_REG 128 53 #define PCI_DEVICE_ID_PCH1_PHUB 0x8801 54 #define PCH_MINOR_NOS 1 55 #define CLKCFG_CAN_50MHZ 0x12000000 56 #define CLKCFG_CANCLK_MASK 0xFF000000 57 #define CLKCFG_UART_MASK 0xFFFFFF 58 59 /* CM-iTC */ 60 #define CLKCFG_UART_48MHZ (1 << 16) 61 #define CLKCFG_UART_25MHZ (2 << 16) 62 #define CLKCFG_BAUDDIV (2 << 20) 63 #define CLKCFG_PLL2VCO (8 << 9) 64 #define CLKCFG_UARTCLKSEL (1 << 18) 65 66 /* Macros for ML7213 */ 67 #define PCI_VENDOR_ID_ROHM 0x10db 68 #define PCI_DEVICE_ID_ROHM_ML7213_PHUB 0x801A 69 70 /* Macros for ML7223 */ 71 #define PCI_DEVICE_ID_ROHM_ML7223_mPHUB 0x8012 /* for Bus-m */ 72 #define PCI_DEVICE_ID_ROHM_ML7223_nPHUB 0x8002 /* for Bus-n */ 73 74 /* Macros for ML7831 */ 75 #define PCI_DEVICE_ID_ROHM_ML7831_PHUB 0x8801 76 77 /* SROM ACCESS Macro */ 78 #define PCH_WORD_ADDR_MASK (~((1 << 2) - 1)) 79 80 /* Registers address offset */ 81 #define PCH_PHUB_ID_REG 0x0000 82 #define PCH_PHUB_QUEUE_PRI_VAL_REG 0x0004 83 #define PCH_PHUB_RC_QUEUE_MAXSIZE_REG 0x0008 84 #define PCH_PHUB_BRI_QUEUE_MAXSIZE_REG 0x000C 85 #define PCH_PHUB_COMP_RESP_TIMEOUT_REG 0x0010 86 #define PCH_PHUB_BUS_SLAVE_CONTROL_REG 0x0014 87 #define PCH_PHUB_DEADLOCK_AVOID_TYPE_REG 0x0018 88 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG0 0x0020 89 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG1 0x0024 90 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG2 0x0028 91 #define PCH_PHUB_INTPIN_REG_WPERMIT_REG3 0x002C 92 #define PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE 0x0040 93 #define CLKCFG_REG_OFFSET 0x500 94 #define FUNCSEL_REG_OFFSET 0x508 95 96 #define PCH_PHUB_OROM_SIZE 15360 97 98 /** 99 * struct pch_phub_reg - PHUB register structure 100 * @phub_id_reg: PHUB_ID register val 101 * @q_pri_val_reg: QUEUE_PRI_VAL register val 102 * @rc_q_maxsize_reg: RC_QUEUE_MAXSIZE register val 103 * @bri_q_maxsize_reg: BRI_QUEUE_MAXSIZE register val 104 * @comp_resp_timeout_reg: COMP_RESP_TIMEOUT register val 105 * @bus_slave_control_reg: BUS_SLAVE_CONTROL_REG register val 106 * @deadlock_avoid_type_reg: DEADLOCK_AVOID_TYPE register val 107 * @intpin_reg_wpermit_reg0: INTPIN_REG_WPERMIT register 0 val 108 * @intpin_reg_wpermit_reg1: INTPIN_REG_WPERMIT register 1 val 109 * @intpin_reg_wpermit_reg2: INTPIN_REG_WPERMIT register 2 val 110 * @intpin_reg_wpermit_reg3: INTPIN_REG_WPERMIT register 3 val 111 * @int_reduce_control_reg: INT_REDUCE_CONTROL registers val 112 * @clkcfg_reg: CLK CFG register val 113 * @funcsel_reg: Function select register value 114 * @pch_phub_base_address: Register base address 115 * @pch_phub_extrom_base_address: external rom base address 116 * @pch_mac_start_address: MAC address area start address 117 * @pch_opt_rom_start_address: Option ROM start address 118 * @ioh_type: Save IOH type 119 * @pdev: pointer to pci device struct 120 */ 121 struct pch_phub_reg { 122 u32 phub_id_reg; 123 u32 q_pri_val_reg; 124 u32 rc_q_maxsize_reg; 125 u32 bri_q_maxsize_reg; 126 u32 comp_resp_timeout_reg; 127 u32 bus_slave_control_reg; 128 u32 deadlock_avoid_type_reg; 129 u32 intpin_reg_wpermit_reg0; 130 u32 intpin_reg_wpermit_reg1; 131 u32 intpin_reg_wpermit_reg2; 132 u32 intpin_reg_wpermit_reg3; 133 u32 int_reduce_control_reg[MAX_NUM_INT_REDUCE_CONTROL_REG]; 134 u32 clkcfg_reg; 135 u32 funcsel_reg; 136 void __iomem *pch_phub_base_address; 137 void __iomem *pch_phub_extrom_base_address; 138 u32 pch_mac_start_address; 139 u32 pch_opt_rom_start_address; 140 int ioh_type; 141 struct pci_dev *pdev; 142 }; 143 144 /* SROM SPEC for MAC address assignment offset */ 145 static const int pch_phub_mac_offset[ETH_ALEN] = {0x3, 0x2, 0x1, 0x0, 0xb, 0xa}; 146 147 static DEFINE_MUTEX(pch_phub_mutex); 148 149 /** 150 * pch_phub_read_modify_write_reg() - Reading modifying and writing register 151 * @reg_addr_offset: Register offset address value. 152 * @data: Writing value. 153 * @mask: Mask value. 154 */ 155 static void pch_phub_read_modify_write_reg(struct pch_phub_reg *chip, 156 unsigned int reg_addr_offset, 157 unsigned int data, unsigned int mask) 158 { 159 void __iomem *reg_addr = chip->pch_phub_base_address + reg_addr_offset; 160 iowrite32(((ioread32(reg_addr) & ~mask)) | data, reg_addr); 161 } 162 163 #ifdef CONFIG_PM 164 /* pch_phub_save_reg_conf - saves register configuration */ 165 static void pch_phub_save_reg_conf(struct pci_dev *pdev) 166 { 167 unsigned int i; 168 struct pch_phub_reg *chip = pci_get_drvdata(pdev); 169 170 void __iomem *p = chip->pch_phub_base_address; 171 172 chip->phub_id_reg = ioread32(p + PCH_PHUB_ID_REG); 173 chip->q_pri_val_reg = ioread32(p + PCH_PHUB_QUEUE_PRI_VAL_REG); 174 chip->rc_q_maxsize_reg = ioread32(p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG); 175 chip->bri_q_maxsize_reg = ioread32(p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG); 176 chip->comp_resp_timeout_reg = 177 ioread32(p + PCH_PHUB_COMP_RESP_TIMEOUT_REG); 178 chip->bus_slave_control_reg = 179 ioread32(p + PCH_PHUB_BUS_SLAVE_CONTROL_REG); 180 chip->deadlock_avoid_type_reg = 181 ioread32(p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG); 182 chip->intpin_reg_wpermit_reg0 = 183 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0); 184 chip->intpin_reg_wpermit_reg1 = 185 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1); 186 chip->intpin_reg_wpermit_reg2 = 187 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2); 188 chip->intpin_reg_wpermit_reg3 = 189 ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3); 190 dev_dbg(&pdev->dev, "%s : " 191 "chip->phub_id_reg=%x, " 192 "chip->q_pri_val_reg=%x, " 193 "chip->rc_q_maxsize_reg=%x, " 194 "chip->bri_q_maxsize_reg=%x, " 195 "chip->comp_resp_timeout_reg=%x, " 196 "chip->bus_slave_control_reg=%x, " 197 "chip->deadlock_avoid_type_reg=%x, " 198 "chip->intpin_reg_wpermit_reg0=%x, " 199 "chip->intpin_reg_wpermit_reg1=%x, " 200 "chip->intpin_reg_wpermit_reg2=%x, " 201 "chip->intpin_reg_wpermit_reg3=%x\n", __func__, 202 chip->phub_id_reg, 203 chip->q_pri_val_reg, 204 chip->rc_q_maxsize_reg, 205 chip->bri_q_maxsize_reg, 206 chip->comp_resp_timeout_reg, 207 chip->bus_slave_control_reg, 208 chip->deadlock_avoid_type_reg, 209 chip->intpin_reg_wpermit_reg0, 210 chip->intpin_reg_wpermit_reg1, 211 chip->intpin_reg_wpermit_reg2, 212 chip->intpin_reg_wpermit_reg3); 213 for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) { 214 chip->int_reduce_control_reg[i] = 215 ioread32(p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i); 216 dev_dbg(&pdev->dev, "%s : " 217 "chip->int_reduce_control_reg[%d]=%x\n", 218 __func__, i, chip->int_reduce_control_reg[i]); 219 } 220 chip->clkcfg_reg = ioread32(p + CLKCFG_REG_OFFSET); 221 if ((chip->ioh_type == 2) || (chip->ioh_type == 4)) 222 chip->funcsel_reg = ioread32(p + FUNCSEL_REG_OFFSET); 223 } 224 225 /* pch_phub_restore_reg_conf - restore register configuration */ 226 static void pch_phub_restore_reg_conf(struct pci_dev *pdev) 227 { 228 unsigned int i; 229 struct pch_phub_reg *chip = pci_get_drvdata(pdev); 230 void __iomem *p; 231 p = chip->pch_phub_base_address; 232 233 iowrite32(chip->phub_id_reg, p + PCH_PHUB_ID_REG); 234 iowrite32(chip->q_pri_val_reg, p + PCH_PHUB_QUEUE_PRI_VAL_REG); 235 iowrite32(chip->rc_q_maxsize_reg, p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG); 236 iowrite32(chip->bri_q_maxsize_reg, p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG); 237 iowrite32(chip->comp_resp_timeout_reg, 238 p + PCH_PHUB_COMP_RESP_TIMEOUT_REG); 239 iowrite32(chip->bus_slave_control_reg, 240 p + PCH_PHUB_BUS_SLAVE_CONTROL_REG); 241 iowrite32(chip->deadlock_avoid_type_reg, 242 p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG); 243 iowrite32(chip->intpin_reg_wpermit_reg0, 244 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0); 245 iowrite32(chip->intpin_reg_wpermit_reg1, 246 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1); 247 iowrite32(chip->intpin_reg_wpermit_reg2, 248 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2); 249 iowrite32(chip->intpin_reg_wpermit_reg3, 250 p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3); 251 dev_dbg(&pdev->dev, "%s : " 252 "chip->phub_id_reg=%x, " 253 "chip->q_pri_val_reg=%x, " 254 "chip->rc_q_maxsize_reg=%x, " 255 "chip->bri_q_maxsize_reg=%x, " 256 "chip->comp_resp_timeout_reg=%x, " 257 "chip->bus_slave_control_reg=%x, " 258 "chip->deadlock_avoid_type_reg=%x, " 259 "chip->intpin_reg_wpermit_reg0=%x, " 260 "chip->intpin_reg_wpermit_reg1=%x, " 261 "chip->intpin_reg_wpermit_reg2=%x, " 262 "chip->intpin_reg_wpermit_reg3=%x\n", __func__, 263 chip->phub_id_reg, 264 chip->q_pri_val_reg, 265 chip->rc_q_maxsize_reg, 266 chip->bri_q_maxsize_reg, 267 chip->comp_resp_timeout_reg, 268 chip->bus_slave_control_reg, 269 chip->deadlock_avoid_type_reg, 270 chip->intpin_reg_wpermit_reg0, 271 chip->intpin_reg_wpermit_reg1, 272 chip->intpin_reg_wpermit_reg2, 273 chip->intpin_reg_wpermit_reg3); 274 for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) { 275 iowrite32(chip->int_reduce_control_reg[i], 276 p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i); 277 dev_dbg(&pdev->dev, "%s : " 278 "chip->int_reduce_control_reg[%d]=%x\n", 279 __func__, i, chip->int_reduce_control_reg[i]); 280 } 281 282 iowrite32(chip->clkcfg_reg, p + CLKCFG_REG_OFFSET); 283 if ((chip->ioh_type == 2) || (chip->ioh_type == 4)) 284 iowrite32(chip->funcsel_reg, p + FUNCSEL_REG_OFFSET); 285 } 286 #endif 287 288 /** 289 * pch_phub_read_serial_rom() - Reading Serial ROM 290 * @offset_address: Serial ROM offset address to read. 291 * @data: Read buffer for specified Serial ROM value. 292 */ 293 static void pch_phub_read_serial_rom(struct pch_phub_reg *chip, 294 unsigned int offset_address, u8 *data) 295 { 296 void __iomem *mem_addr = chip->pch_phub_extrom_base_address + 297 offset_address; 298 299 *data = ioread8(mem_addr); 300 } 301 302 /** 303 * pch_phub_write_serial_rom() - Writing Serial ROM 304 * @offset_address: Serial ROM offset address. 305 * @data: Serial ROM value to write. 306 */ 307 static int pch_phub_write_serial_rom(struct pch_phub_reg *chip, 308 unsigned int offset_address, u8 data) 309 { 310 void __iomem *mem_addr = chip->pch_phub_extrom_base_address + 311 (offset_address & PCH_WORD_ADDR_MASK); 312 int i; 313 unsigned int word_data; 314 unsigned int pos; 315 unsigned int mask; 316 pos = (offset_address % 4) * 8; 317 mask = ~(0xFF << pos); 318 319 iowrite32(PCH_PHUB_ROM_WRITE_ENABLE, 320 chip->pch_phub_extrom_base_address + PHUB_CONTROL); 321 322 word_data = ioread32(mem_addr); 323 iowrite32((word_data & mask) | (u32)data << pos, mem_addr); 324 325 i = 0; 326 while (ioread8(chip->pch_phub_extrom_base_address + 327 PHUB_STATUS) != 0x00) { 328 msleep(1); 329 if (i == PHUB_TIMEOUT) 330 return -ETIMEDOUT; 331 i++; 332 } 333 334 iowrite32(PCH_PHUB_ROM_WRITE_DISABLE, 335 chip->pch_phub_extrom_base_address + PHUB_CONTROL); 336 337 return 0; 338 } 339 340 /** 341 * pch_phub_read_serial_rom_val() - Read Serial ROM value 342 * @offset_address: Serial ROM address offset value. 343 * @data: Serial ROM value to read. 344 */ 345 static void pch_phub_read_serial_rom_val(struct pch_phub_reg *chip, 346 unsigned int offset_address, u8 *data) 347 { 348 unsigned int mem_addr; 349 350 mem_addr = chip->pch_mac_start_address + 351 pch_phub_mac_offset[offset_address]; 352 353 pch_phub_read_serial_rom(chip, mem_addr, data); 354 } 355 356 /** 357 * pch_phub_write_serial_rom_val() - writing Serial ROM value 358 * @offset_address: Serial ROM address offset value. 359 * @data: Serial ROM value. 360 */ 361 static int pch_phub_write_serial_rom_val(struct pch_phub_reg *chip, 362 unsigned int offset_address, u8 data) 363 { 364 int retval; 365 unsigned int mem_addr; 366 367 mem_addr = chip->pch_mac_start_address + 368 pch_phub_mac_offset[offset_address]; 369 370 retval = pch_phub_write_serial_rom(chip, mem_addr, data); 371 372 return retval; 373 } 374 375 /* pch_phub_gbe_serial_rom_conf - makes Serial ROM header format configuration 376 * for Gigabit Ethernet MAC address 377 */ 378 static int pch_phub_gbe_serial_rom_conf(struct pch_phub_reg *chip) 379 { 380 int retval; 381 382 retval = pch_phub_write_serial_rom(chip, 0x0b, 0xbc); 383 retval |= pch_phub_write_serial_rom(chip, 0x0a, 0x10); 384 retval |= pch_phub_write_serial_rom(chip, 0x09, 0x01); 385 retval |= pch_phub_write_serial_rom(chip, 0x08, 0x02); 386 387 retval |= pch_phub_write_serial_rom(chip, 0x0f, 0x00); 388 retval |= pch_phub_write_serial_rom(chip, 0x0e, 0x00); 389 retval |= pch_phub_write_serial_rom(chip, 0x0d, 0x00); 390 retval |= pch_phub_write_serial_rom(chip, 0x0c, 0x80); 391 392 retval |= pch_phub_write_serial_rom(chip, 0x13, 0xbc); 393 retval |= pch_phub_write_serial_rom(chip, 0x12, 0x10); 394 retval |= pch_phub_write_serial_rom(chip, 0x11, 0x01); 395 retval |= pch_phub_write_serial_rom(chip, 0x10, 0x18); 396 397 retval |= pch_phub_write_serial_rom(chip, 0x1b, 0xbc); 398 retval |= pch_phub_write_serial_rom(chip, 0x1a, 0x10); 399 retval |= pch_phub_write_serial_rom(chip, 0x19, 0x01); 400 retval |= pch_phub_write_serial_rom(chip, 0x18, 0x19); 401 402 retval |= pch_phub_write_serial_rom(chip, 0x23, 0xbc); 403 retval |= pch_phub_write_serial_rom(chip, 0x22, 0x10); 404 retval |= pch_phub_write_serial_rom(chip, 0x21, 0x01); 405 retval |= pch_phub_write_serial_rom(chip, 0x20, 0x3a); 406 407 retval |= pch_phub_write_serial_rom(chip, 0x27, 0x01); 408 retval |= pch_phub_write_serial_rom(chip, 0x26, 0x00); 409 retval |= pch_phub_write_serial_rom(chip, 0x25, 0x00); 410 retval |= pch_phub_write_serial_rom(chip, 0x24, 0x00); 411 412 return retval; 413 } 414 415 /* pch_phub_gbe_serial_rom_conf_mp - makes SerialROM header format configuration 416 * for Gigabit Ethernet MAC address 417 */ 418 static int pch_phub_gbe_serial_rom_conf_mp(struct pch_phub_reg *chip) 419 { 420 int retval; 421 u32 offset_addr; 422 423 offset_addr = 0x200; 424 retval = pch_phub_write_serial_rom(chip, 0x03 + offset_addr, 0xbc); 425 retval |= pch_phub_write_serial_rom(chip, 0x02 + offset_addr, 0x00); 426 retval |= pch_phub_write_serial_rom(chip, 0x01 + offset_addr, 0x40); 427 retval |= pch_phub_write_serial_rom(chip, 0x00 + offset_addr, 0x02); 428 429 retval |= pch_phub_write_serial_rom(chip, 0x07 + offset_addr, 0x00); 430 retval |= pch_phub_write_serial_rom(chip, 0x06 + offset_addr, 0x00); 431 retval |= pch_phub_write_serial_rom(chip, 0x05 + offset_addr, 0x00); 432 retval |= pch_phub_write_serial_rom(chip, 0x04 + offset_addr, 0x80); 433 434 retval |= pch_phub_write_serial_rom(chip, 0x0b + offset_addr, 0xbc); 435 retval |= pch_phub_write_serial_rom(chip, 0x0a + offset_addr, 0x00); 436 retval |= pch_phub_write_serial_rom(chip, 0x09 + offset_addr, 0x40); 437 retval |= pch_phub_write_serial_rom(chip, 0x08 + offset_addr, 0x18); 438 439 retval |= pch_phub_write_serial_rom(chip, 0x13 + offset_addr, 0xbc); 440 retval |= pch_phub_write_serial_rom(chip, 0x12 + offset_addr, 0x00); 441 retval |= pch_phub_write_serial_rom(chip, 0x11 + offset_addr, 0x40); 442 retval |= pch_phub_write_serial_rom(chip, 0x10 + offset_addr, 0x19); 443 444 retval |= pch_phub_write_serial_rom(chip, 0x1b + offset_addr, 0xbc); 445 retval |= pch_phub_write_serial_rom(chip, 0x1a + offset_addr, 0x00); 446 retval |= pch_phub_write_serial_rom(chip, 0x19 + offset_addr, 0x40); 447 retval |= pch_phub_write_serial_rom(chip, 0x18 + offset_addr, 0x3a); 448 449 retval |= pch_phub_write_serial_rom(chip, 0x1f + offset_addr, 0x01); 450 retval |= pch_phub_write_serial_rom(chip, 0x1e + offset_addr, 0x00); 451 retval |= pch_phub_write_serial_rom(chip, 0x1d + offset_addr, 0x00); 452 retval |= pch_phub_write_serial_rom(chip, 0x1c + offset_addr, 0x00); 453 454 return retval; 455 } 456 457 /** 458 * pch_phub_read_gbe_mac_addr() - Read Gigabit Ethernet MAC address 459 * @offset_address: Gigabit Ethernet MAC address offset value. 460 * @data: Buffer of the Gigabit Ethernet MAC address value. 461 */ 462 static void pch_phub_read_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data) 463 { 464 int i; 465 for (i = 0; i < ETH_ALEN; i++) 466 pch_phub_read_serial_rom_val(chip, i, &data[i]); 467 } 468 469 /** 470 * pch_phub_write_gbe_mac_addr() - Write MAC address 471 * @offset_address: Gigabit Ethernet MAC address offset value. 472 * @data: Gigabit Ethernet MAC address value. 473 */ 474 static int pch_phub_write_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data) 475 { 476 int retval; 477 int i; 478 479 if ((chip->ioh_type == 1) || (chip->ioh_type == 5)) /* EG20T or ML7831*/ 480 retval = pch_phub_gbe_serial_rom_conf(chip); 481 else /* ML7223 */ 482 retval = pch_phub_gbe_serial_rom_conf_mp(chip); 483 if (retval) 484 return retval; 485 486 for (i = 0; i < ETH_ALEN; i++) { 487 retval = pch_phub_write_serial_rom_val(chip, i, data[i]); 488 if (retval) 489 return retval; 490 } 491 492 return retval; 493 } 494 495 static ssize_t pch_phub_bin_read(struct file *filp, struct kobject *kobj, 496 struct bin_attribute *attr, char *buf, 497 loff_t off, size_t count) 498 { 499 unsigned int rom_signature; 500 unsigned char rom_length; 501 unsigned int tmp; 502 unsigned int addr_offset; 503 unsigned int orom_size; 504 int ret; 505 int err; 506 ssize_t rom_size; 507 508 struct pch_phub_reg *chip = dev_get_drvdata(kobj_to_dev(kobj)); 509 510 ret = mutex_lock_interruptible(&pch_phub_mutex); 511 if (ret) { 512 err = -ERESTARTSYS; 513 goto return_err_nomutex; 514 } 515 516 /* Get Rom signature */ 517 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size); 518 if (!chip->pch_phub_extrom_base_address) { 519 err = -ENODATA; 520 goto exrom_map_err; 521 } 522 523 pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address, 524 (unsigned char *)&rom_signature); 525 rom_signature &= 0xff; 526 pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address + 1, 527 (unsigned char *)&tmp); 528 rom_signature |= (tmp & 0xff) << 8; 529 if (rom_signature == 0xAA55) { 530 pch_phub_read_serial_rom(chip, 531 chip->pch_opt_rom_start_address + 2, 532 &rom_length); 533 orom_size = rom_length * 512; 534 if (orom_size < off) { 535 addr_offset = 0; 536 goto return_ok; 537 } 538 if (orom_size < count) { 539 addr_offset = 0; 540 goto return_ok; 541 } 542 543 for (addr_offset = 0; addr_offset < count; addr_offset++) { 544 pch_phub_read_serial_rom(chip, 545 chip->pch_opt_rom_start_address + addr_offset + off, 546 &buf[addr_offset]); 547 } 548 } else { 549 err = -ENODATA; 550 goto return_err; 551 } 552 return_ok: 553 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address); 554 mutex_unlock(&pch_phub_mutex); 555 return addr_offset; 556 557 return_err: 558 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address); 559 exrom_map_err: 560 mutex_unlock(&pch_phub_mutex); 561 return_err_nomutex: 562 return err; 563 } 564 565 static ssize_t pch_phub_bin_write(struct file *filp, struct kobject *kobj, 566 struct bin_attribute *attr, 567 char *buf, loff_t off, size_t count) 568 { 569 int err; 570 unsigned int addr_offset; 571 int ret; 572 ssize_t rom_size; 573 struct pch_phub_reg *chip = dev_get_drvdata(kobj_to_dev(kobj)); 574 575 ret = mutex_lock_interruptible(&pch_phub_mutex); 576 if (ret) 577 return -ERESTARTSYS; 578 579 if (off > PCH_PHUB_OROM_SIZE) { 580 addr_offset = 0; 581 goto return_ok; 582 } 583 if (count > PCH_PHUB_OROM_SIZE) { 584 addr_offset = 0; 585 goto return_ok; 586 } 587 588 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size); 589 if (!chip->pch_phub_extrom_base_address) { 590 err = -ENOMEM; 591 goto exrom_map_err; 592 } 593 594 for (addr_offset = 0; addr_offset < count; addr_offset++) { 595 if (PCH_PHUB_OROM_SIZE < off + addr_offset) 596 goto return_ok; 597 598 ret = pch_phub_write_serial_rom(chip, 599 chip->pch_opt_rom_start_address + addr_offset + off, 600 buf[addr_offset]); 601 if (ret) { 602 err = ret; 603 goto return_err; 604 } 605 } 606 607 return_ok: 608 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address); 609 mutex_unlock(&pch_phub_mutex); 610 return addr_offset; 611 612 return_err: 613 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address); 614 615 exrom_map_err: 616 mutex_unlock(&pch_phub_mutex); 617 return err; 618 } 619 620 static ssize_t show_pch_mac(struct device *dev, struct device_attribute *attr, 621 char *buf) 622 { 623 u8 mac[8]; 624 struct pch_phub_reg *chip = dev_get_drvdata(dev); 625 ssize_t rom_size; 626 627 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size); 628 if (!chip->pch_phub_extrom_base_address) 629 return -ENOMEM; 630 631 pch_phub_read_gbe_mac_addr(chip, mac); 632 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address); 633 634 return sprintf(buf, "%pM\n", mac); 635 } 636 637 static ssize_t store_pch_mac(struct device *dev, struct device_attribute *attr, 638 const char *buf, size_t count) 639 { 640 u8 mac[ETH_ALEN]; 641 ssize_t rom_size; 642 struct pch_phub_reg *chip = dev_get_drvdata(dev); 643 int ret; 644 645 if (!mac_pton(buf, mac)) 646 return -EINVAL; 647 648 chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size); 649 if (!chip->pch_phub_extrom_base_address) 650 return -ENOMEM; 651 652 ret = pch_phub_write_gbe_mac_addr(chip, mac); 653 pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address); 654 if (ret) 655 return ret; 656 657 return count; 658 } 659 660 static DEVICE_ATTR(pch_mac, S_IRUGO | S_IWUSR, show_pch_mac, store_pch_mac); 661 662 static const struct bin_attribute pch_bin_attr = { 663 .attr = { 664 .name = "pch_firmware", 665 .mode = S_IRUGO | S_IWUSR, 666 }, 667 .size = PCH_PHUB_OROM_SIZE + 1, 668 .read = pch_phub_bin_read, 669 .write = pch_phub_bin_write, 670 }; 671 672 static int pch_phub_probe(struct pci_dev *pdev, 673 const struct pci_device_id *id) 674 { 675 int ret; 676 struct pch_phub_reg *chip; 677 678 chip = kzalloc(sizeof(struct pch_phub_reg), GFP_KERNEL); 679 if (chip == NULL) 680 return -ENOMEM; 681 682 ret = pci_enable_device(pdev); 683 if (ret) { 684 dev_err(&pdev->dev, 685 "%s : pci_enable_device FAILED(ret=%d)", __func__, ret); 686 goto err_pci_enable_dev; 687 } 688 dev_dbg(&pdev->dev, "%s : pci_enable_device returns %d\n", __func__, 689 ret); 690 691 ret = pci_request_regions(pdev, KBUILD_MODNAME); 692 if (ret) { 693 dev_err(&pdev->dev, 694 "%s : pci_request_regions FAILED(ret=%d)", __func__, ret); 695 goto err_req_regions; 696 } 697 dev_dbg(&pdev->dev, "%s : " 698 "pci_request_regions returns %d\n", __func__, ret); 699 700 chip->pch_phub_base_address = pci_iomap(pdev, 1, 0); 701 702 703 if (chip->pch_phub_base_address == NULL) { 704 dev_err(&pdev->dev, "%s : pci_iomap FAILED", __func__); 705 ret = -ENOMEM; 706 goto err_pci_iomap; 707 } 708 dev_dbg(&pdev->dev, "%s : pci_iomap SUCCESS and value " 709 "in pch_phub_base_address variable is %p\n", __func__, 710 chip->pch_phub_base_address); 711 712 chip->pdev = pdev; /* Save pci device struct */ 713 714 if (id->driver_data == 1) { /* EG20T PCH */ 715 const char *board_name; 716 unsigned int prefetch = 0x000affaa; 717 718 if (pdev->dev.of_node) 719 of_property_read_u32(pdev->dev.of_node, 720 "intel,eg20t-prefetch", 721 &prefetch); 722 723 ret = sysfs_create_file(&pdev->dev.kobj, 724 &dev_attr_pch_mac.attr); 725 if (ret) 726 goto err_sysfs_create; 727 728 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr); 729 if (ret) 730 goto exit_bin_attr; 731 732 pch_phub_read_modify_write_reg(chip, 733 (unsigned int)CLKCFG_REG_OFFSET, 734 CLKCFG_CAN_50MHZ, 735 CLKCFG_CANCLK_MASK); 736 737 /* quirk for CM-iTC board */ 738 board_name = dmi_get_system_info(DMI_BOARD_NAME); 739 if (board_name && strstr(board_name, "CM-iTC")) 740 pch_phub_read_modify_write_reg(chip, 741 (unsigned int)CLKCFG_REG_OFFSET, 742 CLKCFG_UART_48MHZ | CLKCFG_BAUDDIV | 743 CLKCFG_PLL2VCO | CLKCFG_UARTCLKSEL, 744 CLKCFG_UART_MASK); 745 746 /* set the prefech value */ 747 iowrite32(prefetch, chip->pch_phub_base_address + 0x14); 748 /* set the interrupt delay value */ 749 iowrite32(0x25, chip->pch_phub_base_address + 0x44); 750 chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T; 751 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T; 752 753 /* quirk for MIPS Boston platform */ 754 if (pdev->dev.of_node) { 755 if (of_machine_is_compatible("img,boston")) { 756 pch_phub_read_modify_write_reg(chip, 757 (unsigned int)CLKCFG_REG_OFFSET, 758 CLKCFG_UART_25MHZ, 759 CLKCFG_UART_MASK); 760 } 761 } 762 } else if (id->driver_data == 2) { /* ML7213 IOH */ 763 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr); 764 if (ret) 765 goto err_sysfs_create; 766 /* set the prefech value 767 * Device2(USB OHCI #1/ USB EHCI #1/ USB Device):a 768 * Device4(SDIO #0,1,2):f 769 * Device6(SATA 2):f 770 * Device8(USB OHCI #0/ USB EHCI #0):a 771 */ 772 iowrite32(0x000affa0, chip->pch_phub_base_address + 0x14); 773 chip->pch_opt_rom_start_address =\ 774 PCH_PHUB_ROM_START_ADDR_ML7213; 775 } else if (id->driver_data == 3) { /* ML7223 IOH Bus-m*/ 776 /* set the prefech value 777 * Device8(GbE) 778 */ 779 iowrite32(0x000a0000, chip->pch_phub_base_address + 0x14); 780 /* set the interrupt delay value */ 781 iowrite32(0x25, chip->pch_phub_base_address + 0x140); 782 chip->pch_opt_rom_start_address =\ 783 PCH_PHUB_ROM_START_ADDR_ML7223; 784 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_ML7223; 785 } else if (id->driver_data == 4) { /* ML7223 IOH Bus-n*/ 786 ret = sysfs_create_file(&pdev->dev.kobj, 787 &dev_attr_pch_mac.attr); 788 if (ret) 789 goto err_sysfs_create; 790 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr); 791 if (ret) 792 goto exit_bin_attr; 793 /* set the prefech value 794 * Device2(USB OHCI #0,1,2,3/ USB EHCI #0):a 795 * Device4(SDIO #0,1):f 796 * Device6(SATA 2):f 797 */ 798 iowrite32(0x0000ffa0, chip->pch_phub_base_address + 0x14); 799 chip->pch_opt_rom_start_address =\ 800 PCH_PHUB_ROM_START_ADDR_ML7223; 801 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_ML7223; 802 } else if (id->driver_data == 5) { /* ML7831 */ 803 ret = sysfs_create_file(&pdev->dev.kobj, 804 &dev_attr_pch_mac.attr); 805 if (ret) 806 goto err_sysfs_create; 807 808 ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr); 809 if (ret) 810 goto exit_bin_attr; 811 812 /* set the prefech value */ 813 iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14); 814 /* set the interrupt delay value */ 815 iowrite32(0x25, chip->pch_phub_base_address + 0x44); 816 chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T; 817 chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T; 818 } 819 820 chip->ioh_type = id->driver_data; 821 pci_set_drvdata(pdev, chip); 822 823 return 0; 824 exit_bin_attr: 825 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr); 826 827 err_sysfs_create: 828 pci_iounmap(pdev, chip->pch_phub_base_address); 829 err_pci_iomap: 830 pci_release_regions(pdev); 831 err_req_regions: 832 pci_disable_device(pdev); 833 err_pci_enable_dev: 834 kfree(chip); 835 dev_err(&pdev->dev, "%s returns %d\n", __func__, ret); 836 return ret; 837 } 838 839 static void pch_phub_remove(struct pci_dev *pdev) 840 { 841 struct pch_phub_reg *chip = pci_get_drvdata(pdev); 842 843 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr); 844 sysfs_remove_bin_file(&pdev->dev.kobj, &pch_bin_attr); 845 pci_iounmap(pdev, chip->pch_phub_base_address); 846 pci_release_regions(pdev); 847 pci_disable_device(pdev); 848 kfree(chip); 849 } 850 851 #ifdef CONFIG_PM 852 853 static int pch_phub_suspend(struct pci_dev *pdev, pm_message_t state) 854 { 855 int ret; 856 857 pch_phub_save_reg_conf(pdev); 858 ret = pci_save_state(pdev); 859 if (ret) { 860 dev_err(&pdev->dev, 861 " %s -pci_save_state returns %d\n", __func__, ret); 862 return ret; 863 } 864 pci_enable_wake(pdev, PCI_D3hot, 0); 865 pci_disable_device(pdev); 866 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 867 868 return 0; 869 } 870 871 static int pch_phub_resume(struct pci_dev *pdev) 872 { 873 int ret; 874 875 pci_set_power_state(pdev, PCI_D0); 876 pci_restore_state(pdev); 877 ret = pci_enable_device(pdev); 878 if (ret) { 879 dev_err(&pdev->dev, 880 "%s-pci_enable_device failed(ret=%d) ", __func__, ret); 881 return ret; 882 } 883 884 pci_enable_wake(pdev, PCI_D3hot, 0); 885 pch_phub_restore_reg_conf(pdev); 886 887 return 0; 888 } 889 #else 890 #define pch_phub_suspend NULL 891 #define pch_phub_resume NULL 892 #endif /* CONFIG_PM */ 893 894 static const struct pci_device_id pch_phub_pcidev_id[] = { 895 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH1_PHUB), 1, }, 896 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7213_PHUB), 2, }, 897 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7223_mPHUB), 3, }, 898 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7223_nPHUB), 4, }, 899 { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7831_PHUB), 5, }, 900 { } 901 }; 902 MODULE_DEVICE_TABLE(pci, pch_phub_pcidev_id); 903 904 static struct pci_driver pch_phub_driver = { 905 .name = "pch_phub", 906 .id_table = pch_phub_pcidev_id, 907 .probe = pch_phub_probe, 908 .remove = pch_phub_remove, 909 .suspend = pch_phub_suspend, 910 .resume = pch_phub_resume 911 }; 912 913 module_pci_driver(pch_phub_driver); 914 915 MODULE_DESCRIPTION("Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7223) PHUB"); 916 MODULE_LICENSE("GPL"); 917