1 /* 2 * Compaq Hot Plug Controller Driver 3 * 4 * Copyright (C) 1995,2001 Compaq Computer Corporation 5 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) 6 * Copyright (C) 2001 IBM 7 * 8 * All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or (at 13 * your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 18 * NON INFRINGEMENT. See the GNU General Public License for more 19 * details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 * 25 * Send feedback to <greg@kroah.com> 26 * 27 */ 28 #ifndef _CPQPHP_H 29 #define _CPQPHP_H 30 31 #include <linux/interrupt.h> 32 #include <asm/io.h> /* for read? and write? functions */ 33 #include <linux/delay.h> /* for delays */ 34 #include <linux/mutex.h> 35 36 #define MY_NAME "cpqphp" 37 38 #define dbg(fmt, arg...) do { if (cpqhp_debug) printk(KERN_DEBUG "%s: " fmt , MY_NAME , ## arg); } while (0) 39 #define err(format, arg...) printk(KERN_ERR "%s: " format , MY_NAME , ## arg) 40 #define info(format, arg...) printk(KERN_INFO "%s: " format , MY_NAME , ## arg) 41 #define warn(format, arg...) printk(KERN_WARNING "%s: " format , MY_NAME , ## arg) 42 43 44 45 struct smbios_system_slot { 46 u8 type; 47 u8 length; 48 u16 handle; 49 u8 name_string_num; 50 u8 slot_type; 51 u8 slot_width; 52 u8 slot_current_usage; 53 u8 slot_length; 54 u16 slot_number; 55 u8 properties1; 56 u8 properties2; 57 } __attribute__ ((packed)); 58 59 /* offsets to the smbios generic type based on the above structure layout */ 60 enum smbios_system_slot_offsets { 61 SMBIOS_SLOT_GENERIC_TYPE = offsetof(struct smbios_system_slot, type), 62 SMBIOS_SLOT_GENERIC_LENGTH = offsetof(struct smbios_system_slot, length), 63 SMBIOS_SLOT_GENERIC_HANDLE = offsetof(struct smbios_system_slot, handle), 64 SMBIOS_SLOT_NAME_STRING_NUM = offsetof(struct smbios_system_slot, name_string_num), 65 SMBIOS_SLOT_TYPE = offsetof(struct smbios_system_slot, slot_type), 66 SMBIOS_SLOT_WIDTH = offsetof(struct smbios_system_slot, slot_width), 67 SMBIOS_SLOT_CURRENT_USAGE = offsetof(struct smbios_system_slot, slot_current_usage), 68 SMBIOS_SLOT_LENGTH = offsetof(struct smbios_system_slot, slot_length), 69 SMBIOS_SLOT_NUMBER = offsetof(struct smbios_system_slot, slot_number), 70 SMBIOS_SLOT_PROPERTIES1 = offsetof(struct smbios_system_slot, properties1), 71 SMBIOS_SLOT_PROPERTIES2 = offsetof(struct smbios_system_slot, properties2), 72 }; 73 74 struct smbios_generic { 75 u8 type; 76 u8 length; 77 u16 handle; 78 } __attribute__ ((packed)); 79 80 /* offsets to the smbios generic type based on the above structure layout */ 81 enum smbios_generic_offsets { 82 SMBIOS_GENERIC_TYPE = offsetof(struct smbios_generic, type), 83 SMBIOS_GENERIC_LENGTH = offsetof(struct smbios_generic, length), 84 SMBIOS_GENERIC_HANDLE = offsetof(struct smbios_generic, handle), 85 }; 86 87 struct smbios_entry_point { 88 char anchor[4]; 89 u8 ep_checksum; 90 u8 ep_length; 91 u8 major_version; 92 u8 minor_version; 93 u16 max_size_entry; 94 u8 ep_rev; 95 u8 reserved[5]; 96 char int_anchor[5]; 97 u8 int_checksum; 98 u16 st_length; 99 u32 st_address; 100 u16 number_of_entrys; 101 u8 bcd_rev; 102 } __attribute__ ((packed)); 103 104 /* offsets to the smbios entry point based on the above structure layout */ 105 enum smbios_entry_point_offsets { 106 ANCHOR = offsetof(struct smbios_entry_point, anchor[0]), 107 EP_CHECKSUM = offsetof(struct smbios_entry_point, ep_checksum), 108 EP_LENGTH = offsetof(struct smbios_entry_point, ep_length), 109 MAJOR_VERSION = offsetof(struct smbios_entry_point, major_version), 110 MINOR_VERSION = offsetof(struct smbios_entry_point, minor_version), 111 MAX_SIZE_ENTRY = offsetof(struct smbios_entry_point, max_size_entry), 112 EP_REV = offsetof(struct smbios_entry_point, ep_rev), 113 INT_ANCHOR = offsetof(struct smbios_entry_point, int_anchor[0]), 114 INT_CHECKSUM = offsetof(struct smbios_entry_point, int_checksum), 115 ST_LENGTH = offsetof(struct smbios_entry_point, st_length), 116 ST_ADDRESS = offsetof(struct smbios_entry_point, st_address), 117 NUMBER_OF_ENTRYS = offsetof(struct smbios_entry_point, number_of_entrys), 118 BCD_REV = offsetof(struct smbios_entry_point, bcd_rev), 119 }; 120 121 struct ctrl_reg { /* offset */ 122 u8 slot_RST; /* 0x00 */ 123 u8 slot_enable; /* 0x01 */ 124 u16 misc; /* 0x02 */ 125 u32 led_control; /* 0x04 */ 126 u32 int_input_clear; /* 0x08 */ 127 u32 int_mask; /* 0x0a */ 128 u8 reserved0; /* 0x10 */ 129 u8 reserved1; /* 0x11 */ 130 u8 reserved2; /* 0x12 */ 131 u8 gen_output_AB; /* 0x13 */ 132 u32 non_int_input; /* 0x14 */ 133 u32 reserved3; /* 0x18 */ 134 u32 reserved4; /* 0x1a */ 135 u32 reserved5; /* 0x20 */ 136 u8 reserved6; /* 0x24 */ 137 u8 reserved7; /* 0x25 */ 138 u16 reserved8; /* 0x26 */ 139 u8 slot_mask; /* 0x28 */ 140 u8 reserved9; /* 0x29 */ 141 u8 reserved10; /* 0x2a */ 142 u8 reserved11; /* 0x2b */ 143 u8 slot_SERR; /* 0x2c */ 144 u8 slot_power; /* 0x2d */ 145 u8 reserved12; /* 0x2e */ 146 u8 reserved13; /* 0x2f */ 147 u8 next_curr_freq; /* 0x30 */ 148 u8 reset_freq_mode; /* 0x31 */ 149 } __attribute__ ((packed)); 150 151 /* offsets to the controller registers based on the above structure layout */ 152 enum ctrl_offsets { 153 SLOT_RST = offsetof(struct ctrl_reg, slot_RST), 154 SLOT_ENABLE = offsetof(struct ctrl_reg, slot_enable), 155 MISC = offsetof(struct ctrl_reg, misc), 156 LED_CONTROL = offsetof(struct ctrl_reg, led_control), 157 INT_INPUT_CLEAR = offsetof(struct ctrl_reg, int_input_clear), 158 INT_MASK = offsetof(struct ctrl_reg, int_mask), 159 CTRL_RESERVED0 = offsetof(struct ctrl_reg, reserved0), 160 CTRL_RESERVED1 = offsetof(struct ctrl_reg, reserved1), 161 CTRL_RESERVED2 = offsetof(struct ctrl_reg, reserved1), 162 GEN_OUTPUT_AB = offsetof(struct ctrl_reg, gen_output_AB), 163 NON_INT_INPUT = offsetof(struct ctrl_reg, non_int_input), 164 CTRL_RESERVED3 = offsetof(struct ctrl_reg, reserved3), 165 CTRL_RESERVED4 = offsetof(struct ctrl_reg, reserved4), 166 CTRL_RESERVED5 = offsetof(struct ctrl_reg, reserved5), 167 CTRL_RESERVED6 = offsetof(struct ctrl_reg, reserved6), 168 CTRL_RESERVED7 = offsetof(struct ctrl_reg, reserved7), 169 CTRL_RESERVED8 = offsetof(struct ctrl_reg, reserved8), 170 SLOT_MASK = offsetof(struct ctrl_reg, slot_mask), 171 CTRL_RESERVED9 = offsetof(struct ctrl_reg, reserved9), 172 CTRL_RESERVED10 = offsetof(struct ctrl_reg, reserved10), 173 CTRL_RESERVED11 = offsetof(struct ctrl_reg, reserved11), 174 SLOT_SERR = offsetof(struct ctrl_reg, slot_SERR), 175 SLOT_POWER = offsetof(struct ctrl_reg, slot_power), 176 NEXT_CURR_FREQ = offsetof(struct ctrl_reg, next_curr_freq), 177 RESET_FREQ_MODE = offsetof(struct ctrl_reg, reset_freq_mode), 178 }; 179 180 struct hrt { 181 char sig0; 182 char sig1; 183 char sig2; 184 char sig3; 185 u16 unused_IRQ; 186 u16 PCIIRQ; 187 u8 number_of_entries; 188 u8 revision; 189 u16 reserved1; 190 u32 reserved2; 191 } __attribute__ ((packed)); 192 193 /* offsets to the hotplug resource table registers based on the above 194 * structure layout 195 */ 196 enum hrt_offsets { 197 SIG0 = offsetof(struct hrt, sig0), 198 SIG1 = offsetof(struct hrt, sig1), 199 SIG2 = offsetof(struct hrt, sig2), 200 SIG3 = offsetof(struct hrt, sig3), 201 UNUSED_IRQ = offsetof(struct hrt, unused_IRQ), 202 PCIIRQ = offsetof(struct hrt, PCIIRQ), 203 NUMBER_OF_ENTRIES = offsetof(struct hrt, number_of_entries), 204 REVISION = offsetof(struct hrt, revision), 205 HRT_RESERVED1 = offsetof(struct hrt, reserved1), 206 HRT_RESERVED2 = offsetof(struct hrt, reserved2), 207 }; 208 209 struct slot_rt { 210 u8 dev_func; 211 u8 primary_bus; 212 u8 secondary_bus; 213 u8 max_bus; 214 u16 io_base; 215 u16 io_length; 216 u16 mem_base; 217 u16 mem_length; 218 u16 pre_mem_base; 219 u16 pre_mem_length; 220 } __attribute__ ((packed)); 221 222 /* offsets to the hotplug slot resource table registers based on the above 223 * structure layout 224 */ 225 enum slot_rt_offsets { 226 DEV_FUNC = offsetof(struct slot_rt, dev_func), 227 PRIMARY_BUS = offsetof(struct slot_rt, primary_bus), 228 SECONDARY_BUS = offsetof(struct slot_rt, secondary_bus), 229 MAX_BUS = offsetof(struct slot_rt, max_bus), 230 IO_BASE = offsetof(struct slot_rt, io_base), 231 IO_LENGTH = offsetof(struct slot_rt, io_length), 232 MEM_BASE = offsetof(struct slot_rt, mem_base), 233 MEM_LENGTH = offsetof(struct slot_rt, mem_length), 234 PRE_MEM_BASE = offsetof(struct slot_rt, pre_mem_base), 235 PRE_MEM_LENGTH = offsetof(struct slot_rt, pre_mem_length), 236 }; 237 238 struct pci_func { 239 struct pci_func *next; 240 u8 bus; 241 u8 device; 242 u8 function; 243 u8 is_a_board; 244 u16 status; 245 u8 configured; 246 u8 switch_save; 247 u8 presence_save; 248 u32 base_length[0x06]; 249 u8 base_type[0x06]; 250 u16 reserved2; 251 u32 config_space[0x20]; 252 struct pci_resource *mem_head; 253 struct pci_resource *p_mem_head; 254 struct pci_resource *io_head; 255 struct pci_resource *bus_head; 256 struct timer_list *p_task_event; 257 struct pci_dev* pci_dev; 258 }; 259 260 struct slot { 261 struct slot *next; 262 u8 bus; 263 u8 device; 264 u8 number; 265 u8 is_a_board; 266 u8 configured; 267 u8 state; 268 u8 switch_save; 269 u8 presence_save; 270 u32 capabilities; 271 u16 reserved2; 272 struct timer_list task_event; 273 u8 hp_slot; 274 struct controller *ctrl; 275 void __iomem *p_sm_slot; 276 struct hotplug_slot *hotplug_slot; 277 }; 278 279 struct pci_resource { 280 struct pci_resource * next; 281 u32 base; 282 u32 length; 283 }; 284 285 struct event_info { 286 u32 event_type; 287 u8 hp_slot; 288 }; 289 290 struct controller { 291 struct controller *next; 292 u32 ctrl_int_comp; 293 struct mutex crit_sect; /* critical section mutex */ 294 void __iomem *hpc_reg; /* cookie for our pci controller location */ 295 struct pci_resource *mem_head; 296 struct pci_resource *p_mem_head; 297 struct pci_resource *io_head; 298 struct pci_resource *bus_head; 299 struct pci_dev *pci_dev; 300 struct pci_bus *pci_bus; 301 struct event_info event_queue[10]; 302 struct slot *slot; 303 u8 next_event; 304 u8 interrupt; 305 u8 cfgspc_irq; 306 u8 bus; /* bus number for the pci hotplug controller */ 307 u8 rev; 308 u8 slot_device_offset; 309 u8 first_slot; 310 u8 add_support; 311 u8 push_flag; 312 enum pci_bus_speed speed; 313 enum pci_bus_speed speed_capability; 314 u8 push_button; /* 0 = no pushbutton, 1 = pushbutton present */ 315 u8 slot_switch_type; /* 0 = no switch, 1 = switch present */ 316 u8 defeature_PHP; /* 0 = PHP not supported, 1 = PHP supported */ 317 u8 alternate_base_address; /* 0 = not supported, 1 = supported */ 318 u8 pci_config_space; /* Index/data access to working registers 0 = not supported, 1 = supported */ 319 u8 pcix_speed_capability; /* PCI-X */ 320 u8 pcix_support; /* PCI-X */ 321 u16 vendor_id; 322 struct work_struct int_task_event; 323 wait_queue_head_t queue; /* sleep & wake process */ 324 struct dentry *dentry; /* debugfs dentry */ 325 }; 326 327 struct irq_mapping { 328 u8 barber_pole; 329 u8 valid_INT; 330 u8 interrupt[4]; 331 }; 332 333 struct resource_lists { 334 struct pci_resource *mem_head; 335 struct pci_resource *p_mem_head; 336 struct pci_resource *io_head; 337 struct pci_resource *bus_head; 338 struct irq_mapping *irqs; 339 }; 340 341 #define ROM_PHY_ADDR 0x0F0000 342 #define ROM_PHY_LEN 0x00ffff 343 344 #define PCI_HPC_ID 0xA0F7 345 #define PCI_SUB_HPC_ID 0xA2F7 346 #define PCI_SUB_HPC_ID2 0xA2F8 347 #define PCI_SUB_HPC_ID3 0xA2F9 348 #define PCI_SUB_HPC_ID_INTC 0xA2FA 349 #define PCI_SUB_HPC_ID4 0xA2FD 350 351 #define INT_BUTTON_IGNORE 0 352 #define INT_PRESENCE_ON 1 353 #define INT_PRESENCE_OFF 2 354 #define INT_SWITCH_CLOSE 3 355 #define INT_SWITCH_OPEN 4 356 #define INT_POWER_FAULT 5 357 #define INT_POWER_FAULT_CLEAR 6 358 #define INT_BUTTON_PRESS 7 359 #define INT_BUTTON_RELEASE 8 360 #define INT_BUTTON_CANCEL 9 361 362 #define STATIC_STATE 0 363 #define BLINKINGON_STATE 1 364 #define BLINKINGOFF_STATE 2 365 #define POWERON_STATE 3 366 #define POWEROFF_STATE 4 367 368 #define PCISLOT_INTERLOCK_CLOSED 0x00000001 369 #define PCISLOT_ADAPTER_PRESENT 0x00000002 370 #define PCISLOT_POWERED 0x00000004 371 #define PCISLOT_66_MHZ_OPERATION 0x00000008 372 #define PCISLOT_64_BIT_OPERATION 0x00000010 373 #define PCISLOT_REPLACE_SUPPORTED 0x00000020 374 #define PCISLOT_ADD_SUPPORTED 0x00000040 375 #define PCISLOT_INTERLOCK_SUPPORTED 0x00000080 376 #define PCISLOT_66_MHZ_SUPPORTED 0x00000100 377 #define PCISLOT_64_BIT_SUPPORTED 0x00000200 378 379 #define PCI_TO_PCI_BRIDGE_CLASS 0x00060400 380 381 #define INTERLOCK_OPEN 0x00000002 382 #define ADD_NOT_SUPPORTED 0x00000003 383 #define CARD_FUNCTIONING 0x00000005 384 #define ADAPTER_NOT_SAME 0x00000006 385 #define NO_ADAPTER_PRESENT 0x00000009 386 #define NOT_ENOUGH_RESOURCES 0x0000000B 387 #define DEVICE_TYPE_NOT_SUPPORTED 0x0000000C 388 #define POWER_FAILURE 0x0000000E 389 390 #define REMOVE_NOT_SUPPORTED 0x00000003 391 392 393 /* 394 * error Messages 395 */ 396 #define msg_initialization_err "Initialization failure, error=%d\n" 397 #define msg_HPC_rev_error "Unsupported revision of the PCI hot plug controller found.\n" 398 #define msg_HPC_non_compaq_or_intel "The PCI hot plug controller is not supported by this driver.\n" 399 #define msg_HPC_not_supported "this system is not supported by this version of cpqphpd. Upgrade to a newer version of cpqphpd\n" 400 #define msg_unable_to_save "unable to store PCI hot plug add resource information. This system must be rebooted before adding any PCI devices.\n" 401 #define msg_button_on "PCI slot #%d - powering on due to button press.\n" 402 #define msg_button_off "PCI slot #%d - powering off due to button press.\n" 403 #define msg_button_cancel "PCI slot #%d - action canceled due to button press.\n" 404 #define msg_button_ignore "PCI slot #%d - button press ignored. (action in progress...)\n" 405 406 407 /* debugfs functions for the hotplug controller info */ 408 extern void cpqhp_initialize_debugfs(void); 409 extern void cpqhp_shutdown_debugfs(void); 410 extern void cpqhp_create_debugfs_files(struct controller *ctrl); 411 extern void cpqhp_remove_debugfs_files(struct controller *ctrl); 412 413 /* controller functions */ 414 extern void cpqhp_pushbutton_thread(unsigned long event_pointer); 415 extern irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data); 416 extern int cpqhp_find_available_resources(struct controller *ctrl, 417 void __iomem *rom_start); 418 extern int cpqhp_event_start_thread(void); 419 extern void cpqhp_event_stop_thread(void); 420 extern struct pci_func *cpqhp_slot_create(unsigned char busnumber); 421 extern struct pci_func *cpqhp_slot_find(unsigned char bus, unsigned char device, 422 unsigned char index); 423 extern int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func); 424 extern int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func); 425 extern int cpqhp_hardware_test(struct controller *ctrl, int test_num); 426 427 /* resource functions */ 428 extern int cpqhp_resource_sort_and_combine (struct pci_resource **head); 429 430 /* pci functions */ 431 extern int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num); 432 extern int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num, 433 u8 slot); 434 extern int cpqhp_save_config(struct controller *ctrl, int busnumber, 435 int is_hot_plug); 436 extern int cpqhp_save_base_addr_length(struct controller *ctrl, 437 struct pci_func *func); 438 extern int cpqhp_save_used_resources(struct controller *ctrl, 439 struct pci_func *func); 440 extern int cpqhp_configure_board(struct controller *ctrl, 441 struct pci_func *func); 442 extern int cpqhp_save_slot_config(struct controller *ctrl, 443 struct pci_func *new_slot); 444 extern int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func); 445 extern void cpqhp_destroy_board_resources(struct pci_func *func); 446 extern int cpqhp_return_board_resources (struct pci_func *func, 447 struct resource_lists *resources); 448 extern void cpqhp_destroy_resource_list(struct resource_lists *resources); 449 extern int cpqhp_configure_device(struct controller *ctrl, 450 struct pci_func *func); 451 extern int cpqhp_unconfigure_device(struct pci_func *func); 452 453 /* Global variables */ 454 extern int cpqhp_debug; 455 extern int cpqhp_legacy_mode; 456 extern struct controller *cpqhp_ctrl_list; 457 extern struct pci_func *cpqhp_slot_list[256]; 458 459 /* these can be gotten rid of, but for debugging they are purty */ 460 extern u8 cpqhp_nic_irq; 461 extern u8 cpqhp_disk_irq; 462 463 464 /* inline functions */ 465 466 static inline char *slot_name(struct slot *slot) 467 { 468 return hotplug_slot_name(slot->hotplug_slot); 469 } 470 471 /* 472 * return_resource 473 * 474 * Puts node back in the resource list pointed to by head 475 */ 476 static inline void return_resource(struct pci_resource **head, 477 struct pci_resource *node) 478 { 479 if (!node || !head) 480 return; 481 node->next = *head; 482 *head = node; 483 } 484 485 static inline void set_SOGO(struct controller *ctrl) 486 { 487 u16 misc; 488 489 misc = readw(ctrl->hpc_reg + MISC); 490 misc = (misc | 0x0001) & 0xFFFB; 491 writew(misc, ctrl->hpc_reg + MISC); 492 } 493 494 495 static inline void amber_LED_on(struct controller *ctrl, u8 slot) 496 { 497 u32 led_control; 498 499 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 500 led_control |= (0x01010000L << slot); 501 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 502 } 503 504 505 static inline void amber_LED_off(struct controller *ctrl, u8 slot) 506 { 507 u32 led_control; 508 509 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 510 led_control &= ~(0x01010000L << slot); 511 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 512 } 513 514 515 static inline int read_amber_LED(struct controller *ctrl, u8 slot) 516 { 517 u32 led_control; 518 519 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 520 led_control &= (0x01010000L << slot); 521 522 return led_control ? 1 : 0; 523 } 524 525 526 static inline void green_LED_on(struct controller *ctrl, u8 slot) 527 { 528 u32 led_control; 529 530 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 531 led_control |= 0x0101L << slot; 532 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 533 } 534 535 static inline void green_LED_off(struct controller *ctrl, u8 slot) 536 { 537 u32 led_control; 538 539 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 540 led_control &= ~(0x0101L << slot); 541 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 542 } 543 544 545 static inline void green_LED_blink(struct controller *ctrl, u8 slot) 546 { 547 u32 led_control; 548 549 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 550 led_control &= ~(0x0101L << slot); 551 led_control |= (0x0001L << slot); 552 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 553 } 554 555 556 static inline void slot_disable(struct controller *ctrl, u8 slot) 557 { 558 u8 slot_enable; 559 560 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE); 561 slot_enable &= ~(0x01 << slot); 562 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE); 563 } 564 565 566 static inline void slot_enable(struct controller *ctrl, u8 slot) 567 { 568 u8 slot_enable; 569 570 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE); 571 slot_enable |= (0x01 << slot); 572 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE); 573 } 574 575 576 static inline u8 is_slot_enabled(struct controller *ctrl, u8 slot) 577 { 578 u8 slot_enable; 579 580 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE); 581 slot_enable &= (0x01 << slot); 582 return slot_enable ? 1 : 0; 583 } 584 585 586 static inline u8 read_slot_enable(struct controller *ctrl) 587 { 588 return readb(ctrl->hpc_reg + SLOT_ENABLE); 589 } 590 591 592 /** 593 * get_controller_speed - find the current frequency/mode of controller. 594 * 595 * @ctrl: controller to get frequency/mode for. 596 * 597 * Returns controller speed. 598 */ 599 static inline u8 get_controller_speed(struct controller *ctrl) 600 { 601 u8 curr_freq; 602 u16 misc; 603 604 if (ctrl->pcix_support) { 605 curr_freq = readb(ctrl->hpc_reg + NEXT_CURR_FREQ); 606 if ((curr_freq & 0xB0) == 0xB0) 607 return PCI_SPEED_133MHz_PCIX; 608 if ((curr_freq & 0xA0) == 0xA0) 609 return PCI_SPEED_100MHz_PCIX; 610 if ((curr_freq & 0x90) == 0x90) 611 return PCI_SPEED_66MHz_PCIX; 612 if (curr_freq & 0x10) 613 return PCI_SPEED_66MHz; 614 615 return PCI_SPEED_33MHz; 616 } 617 618 misc = readw(ctrl->hpc_reg + MISC); 619 return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz; 620 } 621 622 623 /** 624 * get_adapter_speed - find the max supported frequency/mode of adapter. 625 * 626 * @ctrl: hotplug controller. 627 * @hp_slot: hotplug slot where adapter is installed. 628 * 629 * Returns adapter speed. 630 */ 631 static inline u8 get_adapter_speed(struct controller *ctrl, u8 hp_slot) 632 { 633 u32 temp_dword = readl(ctrl->hpc_reg + NON_INT_INPUT); 634 dbg("slot: %d, PCIXCAP: %8x\n", hp_slot, temp_dword); 635 if (ctrl->pcix_support) { 636 if (temp_dword & (0x10000 << hp_slot)) 637 return PCI_SPEED_133MHz_PCIX; 638 if (temp_dword & (0x100 << hp_slot)) 639 return PCI_SPEED_66MHz_PCIX; 640 } 641 642 if (temp_dword & (0x01 << hp_slot)) 643 return PCI_SPEED_66MHz; 644 645 return PCI_SPEED_33MHz; 646 } 647 648 static inline void enable_slot_power(struct controller *ctrl, u8 slot) 649 { 650 u8 slot_power; 651 652 slot_power = readb(ctrl->hpc_reg + SLOT_POWER); 653 slot_power |= (0x01 << slot); 654 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER); 655 } 656 657 static inline void disable_slot_power(struct controller *ctrl, u8 slot) 658 { 659 u8 slot_power; 660 661 slot_power = readb(ctrl->hpc_reg + SLOT_POWER); 662 slot_power &= ~(0x01 << slot); 663 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER); 664 } 665 666 667 static inline int cpq_get_attention_status(struct controller *ctrl, struct slot *slot) 668 { 669 u8 hp_slot; 670 671 hp_slot = slot->device - ctrl->slot_device_offset; 672 673 return read_amber_LED(ctrl, hp_slot); 674 } 675 676 677 static inline int get_slot_enabled(struct controller *ctrl, struct slot *slot) 678 { 679 u8 hp_slot; 680 681 hp_slot = slot->device - ctrl->slot_device_offset; 682 683 return is_slot_enabled(ctrl, hp_slot); 684 } 685 686 687 static inline int cpq_get_latch_status(struct controller *ctrl, 688 struct slot *slot) 689 { 690 u32 status; 691 u8 hp_slot; 692 693 hp_slot = slot->device - ctrl->slot_device_offset; 694 dbg("%s: slot->device = %d, ctrl->slot_device_offset = %d \n", 695 __func__, slot->device, ctrl->slot_device_offset); 696 697 status = (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot)); 698 699 return(status == 0) ? 1 : 0; 700 } 701 702 703 static inline int get_presence_status(struct controller *ctrl, 704 struct slot *slot) 705 { 706 int presence_save = 0; 707 u8 hp_slot; 708 u32 tempdword; 709 710 hp_slot = slot->device - ctrl->slot_device_offset; 711 712 tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); 713 presence_save = (int) ((((~tempdword) >> 23) | ((~tempdword) >> 15)) 714 >> hp_slot) & 0x02; 715 716 return presence_save; 717 } 718 719 static inline int wait_for_ctrl_irq(struct controller *ctrl) 720 { 721 DECLARE_WAITQUEUE(wait, current); 722 int retval = 0; 723 724 dbg("%s - start\n", __func__); 725 add_wait_queue(&ctrl->queue, &wait); 726 /* Sleep for up to 1 second to wait for the LED to change. */ 727 msleep_interruptible(1000); 728 remove_wait_queue(&ctrl->queue, &wait); 729 if (signal_pending(current)) 730 retval = -EINTR; 731 732 dbg("%s - end\n", __func__); 733 return retval; 734 } 735 736 #endif 737