1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Compaq Hot Plug Controller Driver 4 * 5 * Copyright (C) 1995,2001 Compaq Computer Corporation 6 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) 7 * Copyright (C) 2001 IBM 8 * 9 * All rights reserved. 10 * 11 * Send feedback to <greg@kroah.com> 12 * 13 */ 14 #ifndef _CPQPHP_H 15 #define _CPQPHP_H 16 17 #include <linux/interrupt.h> 18 #include <asm/io.h> /* for read? and write? functions */ 19 #include <linux/delay.h> /* for delays */ 20 #include <linux/mutex.h> 21 #include <linux/sched/signal.h> /* for signal_pending() */ 22 23 #define MY_NAME "cpqphp" 24 25 #define dbg(fmt, arg...) do { if (cpqhp_debug) printk(KERN_DEBUG "%s: " fmt, MY_NAME, ## arg); } while (0) 26 #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg) 27 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg) 28 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg) 29 30 31 32 struct smbios_system_slot { 33 u8 type; 34 u8 length; 35 u16 handle; 36 u8 name_string_num; 37 u8 slot_type; 38 u8 slot_width; 39 u8 slot_current_usage; 40 u8 slot_length; 41 u16 slot_number; 42 u8 properties1; 43 u8 properties2; 44 } __attribute__ ((packed)); 45 46 /* offsets to the smbios generic type based on the above structure layout */ 47 enum smbios_system_slot_offsets { 48 SMBIOS_SLOT_GENERIC_TYPE = offsetof(struct smbios_system_slot, type), 49 SMBIOS_SLOT_GENERIC_LENGTH = offsetof(struct smbios_system_slot, length), 50 SMBIOS_SLOT_GENERIC_HANDLE = offsetof(struct smbios_system_slot, handle), 51 SMBIOS_SLOT_NAME_STRING_NUM = offsetof(struct smbios_system_slot, name_string_num), 52 SMBIOS_SLOT_TYPE = offsetof(struct smbios_system_slot, slot_type), 53 SMBIOS_SLOT_WIDTH = offsetof(struct smbios_system_slot, slot_width), 54 SMBIOS_SLOT_CURRENT_USAGE = offsetof(struct smbios_system_slot, slot_current_usage), 55 SMBIOS_SLOT_LENGTH = offsetof(struct smbios_system_slot, slot_length), 56 SMBIOS_SLOT_NUMBER = offsetof(struct smbios_system_slot, slot_number), 57 SMBIOS_SLOT_PROPERTIES1 = offsetof(struct smbios_system_slot, properties1), 58 SMBIOS_SLOT_PROPERTIES2 = offsetof(struct smbios_system_slot, properties2), 59 }; 60 61 struct smbios_generic { 62 u8 type; 63 u8 length; 64 u16 handle; 65 } __attribute__ ((packed)); 66 67 /* offsets to the smbios generic type based on the above structure layout */ 68 enum smbios_generic_offsets { 69 SMBIOS_GENERIC_TYPE = offsetof(struct smbios_generic, type), 70 SMBIOS_GENERIC_LENGTH = offsetof(struct smbios_generic, length), 71 SMBIOS_GENERIC_HANDLE = offsetof(struct smbios_generic, handle), 72 }; 73 74 struct smbios_entry_point { 75 char anchor[4]; 76 u8 ep_checksum; 77 u8 ep_length; 78 u8 major_version; 79 u8 minor_version; 80 u16 max_size_entry; 81 u8 ep_rev; 82 u8 reserved[5]; 83 char int_anchor[5]; 84 u8 int_checksum; 85 u16 st_length; 86 u32 st_address; 87 u16 number_of_entrys; 88 u8 bcd_rev; 89 } __attribute__ ((packed)); 90 91 /* offsets to the smbios entry point based on the above structure layout */ 92 enum smbios_entry_point_offsets { 93 ANCHOR = offsetof(struct smbios_entry_point, anchor[0]), 94 EP_CHECKSUM = offsetof(struct smbios_entry_point, ep_checksum), 95 EP_LENGTH = offsetof(struct smbios_entry_point, ep_length), 96 MAJOR_VERSION = offsetof(struct smbios_entry_point, major_version), 97 MINOR_VERSION = offsetof(struct smbios_entry_point, minor_version), 98 MAX_SIZE_ENTRY = offsetof(struct smbios_entry_point, max_size_entry), 99 EP_REV = offsetof(struct smbios_entry_point, ep_rev), 100 INT_ANCHOR = offsetof(struct smbios_entry_point, int_anchor[0]), 101 INT_CHECKSUM = offsetof(struct smbios_entry_point, int_checksum), 102 ST_LENGTH = offsetof(struct smbios_entry_point, st_length), 103 ST_ADDRESS = offsetof(struct smbios_entry_point, st_address), 104 NUMBER_OF_ENTRYS = offsetof(struct smbios_entry_point, number_of_entrys), 105 BCD_REV = offsetof(struct smbios_entry_point, bcd_rev), 106 }; 107 108 struct ctrl_reg { /* offset */ 109 u8 slot_RST; /* 0x00 */ 110 u8 slot_enable; /* 0x01 */ 111 u16 misc; /* 0x02 */ 112 u32 led_control; /* 0x04 */ 113 u32 int_input_clear; /* 0x08 */ 114 u32 int_mask; /* 0x0a */ 115 u8 reserved0; /* 0x10 */ 116 u8 reserved1; /* 0x11 */ 117 u8 reserved2; /* 0x12 */ 118 u8 gen_output_AB; /* 0x13 */ 119 u32 non_int_input; /* 0x14 */ 120 u32 reserved3; /* 0x18 */ 121 u32 reserved4; /* 0x1a */ 122 u32 reserved5; /* 0x20 */ 123 u8 reserved6; /* 0x24 */ 124 u8 reserved7; /* 0x25 */ 125 u16 reserved8; /* 0x26 */ 126 u8 slot_mask; /* 0x28 */ 127 u8 reserved9; /* 0x29 */ 128 u8 reserved10; /* 0x2a */ 129 u8 reserved11; /* 0x2b */ 130 u8 slot_SERR; /* 0x2c */ 131 u8 slot_power; /* 0x2d */ 132 u8 reserved12; /* 0x2e */ 133 u8 reserved13; /* 0x2f */ 134 u8 next_curr_freq; /* 0x30 */ 135 u8 reset_freq_mode; /* 0x31 */ 136 } __attribute__ ((packed)); 137 138 /* offsets to the controller registers based on the above structure layout */ 139 enum ctrl_offsets { 140 SLOT_RST = offsetof(struct ctrl_reg, slot_RST), 141 SLOT_ENABLE = offsetof(struct ctrl_reg, slot_enable), 142 MISC = offsetof(struct ctrl_reg, misc), 143 LED_CONTROL = offsetof(struct ctrl_reg, led_control), 144 INT_INPUT_CLEAR = offsetof(struct ctrl_reg, int_input_clear), 145 INT_MASK = offsetof(struct ctrl_reg, int_mask), 146 CTRL_RESERVED0 = offsetof(struct ctrl_reg, reserved0), 147 CTRL_RESERVED1 = offsetof(struct ctrl_reg, reserved1), 148 CTRL_RESERVED2 = offsetof(struct ctrl_reg, reserved1), 149 GEN_OUTPUT_AB = offsetof(struct ctrl_reg, gen_output_AB), 150 NON_INT_INPUT = offsetof(struct ctrl_reg, non_int_input), 151 CTRL_RESERVED3 = offsetof(struct ctrl_reg, reserved3), 152 CTRL_RESERVED4 = offsetof(struct ctrl_reg, reserved4), 153 CTRL_RESERVED5 = offsetof(struct ctrl_reg, reserved5), 154 CTRL_RESERVED6 = offsetof(struct ctrl_reg, reserved6), 155 CTRL_RESERVED7 = offsetof(struct ctrl_reg, reserved7), 156 CTRL_RESERVED8 = offsetof(struct ctrl_reg, reserved8), 157 SLOT_MASK = offsetof(struct ctrl_reg, slot_mask), 158 CTRL_RESERVED9 = offsetof(struct ctrl_reg, reserved9), 159 CTRL_RESERVED10 = offsetof(struct ctrl_reg, reserved10), 160 CTRL_RESERVED11 = offsetof(struct ctrl_reg, reserved11), 161 SLOT_SERR = offsetof(struct ctrl_reg, slot_SERR), 162 SLOT_POWER = offsetof(struct ctrl_reg, slot_power), 163 NEXT_CURR_FREQ = offsetof(struct ctrl_reg, next_curr_freq), 164 RESET_FREQ_MODE = offsetof(struct ctrl_reg, reset_freq_mode), 165 }; 166 167 struct hrt { 168 char sig0; 169 char sig1; 170 char sig2; 171 char sig3; 172 u16 unused_IRQ; 173 u16 PCIIRQ; 174 u8 number_of_entries; 175 u8 revision; 176 u16 reserved1; 177 u32 reserved2; 178 } __attribute__ ((packed)); 179 180 /* offsets to the hotplug resource table registers based on the above 181 * structure layout 182 */ 183 enum hrt_offsets { 184 SIG0 = offsetof(struct hrt, sig0), 185 SIG1 = offsetof(struct hrt, sig1), 186 SIG2 = offsetof(struct hrt, sig2), 187 SIG3 = offsetof(struct hrt, sig3), 188 UNUSED_IRQ = offsetof(struct hrt, unused_IRQ), 189 PCIIRQ = offsetof(struct hrt, PCIIRQ), 190 NUMBER_OF_ENTRIES = offsetof(struct hrt, number_of_entries), 191 REVISION = offsetof(struct hrt, revision), 192 HRT_RESERVED1 = offsetof(struct hrt, reserved1), 193 HRT_RESERVED2 = offsetof(struct hrt, reserved2), 194 }; 195 196 struct slot_rt { 197 u8 dev_func; 198 u8 primary_bus; 199 u8 secondary_bus; 200 u8 max_bus; 201 u16 io_base; 202 u16 io_length; 203 u16 mem_base; 204 u16 mem_length; 205 u16 pre_mem_base; 206 u16 pre_mem_length; 207 } __attribute__ ((packed)); 208 209 /* offsets to the hotplug slot resource table registers based on the above 210 * structure layout 211 */ 212 enum slot_rt_offsets { 213 DEV_FUNC = offsetof(struct slot_rt, dev_func), 214 PRIMARY_BUS = offsetof(struct slot_rt, primary_bus), 215 SECONDARY_BUS = offsetof(struct slot_rt, secondary_bus), 216 MAX_BUS = offsetof(struct slot_rt, max_bus), 217 IO_BASE = offsetof(struct slot_rt, io_base), 218 IO_LENGTH = offsetof(struct slot_rt, io_length), 219 MEM_BASE = offsetof(struct slot_rt, mem_base), 220 MEM_LENGTH = offsetof(struct slot_rt, mem_length), 221 PRE_MEM_BASE = offsetof(struct slot_rt, pre_mem_base), 222 PRE_MEM_LENGTH = offsetof(struct slot_rt, pre_mem_length), 223 }; 224 225 struct pci_func { 226 struct pci_func *next; 227 u8 bus; 228 u8 device; 229 u8 function; 230 u8 is_a_board; 231 u16 status; 232 u8 configured; 233 u8 switch_save; 234 u8 presence_save; 235 u32 base_length[0x06]; 236 u8 base_type[0x06]; 237 u16 reserved2; 238 u32 config_space[0x20]; 239 struct pci_resource *mem_head; 240 struct pci_resource *p_mem_head; 241 struct pci_resource *io_head; 242 struct pci_resource *bus_head; 243 struct timer_list *p_task_event; 244 struct pci_dev *pci_dev; 245 }; 246 247 struct slot { 248 struct slot *next; 249 u8 bus; 250 u8 device; 251 u8 number; 252 u8 is_a_board; 253 u8 configured; 254 u8 state; 255 u8 switch_save; 256 u8 presence_save; 257 u32 capabilities; 258 u16 reserved2; 259 struct timer_list task_event; 260 u8 hp_slot; 261 struct controller *ctrl; 262 void __iomem *p_sm_slot; 263 struct hotplug_slot hotplug_slot; 264 }; 265 266 struct pci_resource { 267 struct pci_resource *next; 268 u32 base; 269 u32 length; 270 }; 271 272 struct event_info { 273 u32 event_type; 274 u8 hp_slot; 275 }; 276 277 struct controller { 278 struct controller *next; 279 u32 ctrl_int_comp; 280 struct mutex crit_sect; /* critical section mutex */ 281 void __iomem *hpc_reg; /* cookie for our pci controller location */ 282 struct pci_resource *mem_head; 283 struct pci_resource *p_mem_head; 284 struct pci_resource *io_head; 285 struct pci_resource *bus_head; 286 struct pci_dev *pci_dev; 287 struct pci_bus *pci_bus; 288 struct event_info event_queue[10]; 289 struct slot *slot; 290 u8 next_event; 291 u8 interrupt; 292 u8 cfgspc_irq; 293 u8 bus; /* bus number for the pci hotplug controller */ 294 u8 rev; 295 u8 slot_device_offset; 296 u8 first_slot; 297 u8 add_support; 298 u8 push_flag; 299 u8 push_button; /* 0 = no pushbutton, 1 = pushbutton present */ 300 u8 slot_switch_type; /* 0 = no switch, 1 = switch present */ 301 u8 defeature_PHP; /* 0 = PHP not supported, 1 = PHP supported */ 302 u8 alternate_base_address; /* 0 = not supported, 1 = supported */ 303 u8 pci_config_space; /* Index/data access to working registers 0 = not supported, 1 = supported */ 304 u8 pcix_speed_capability; /* PCI-X */ 305 u8 pcix_support; /* PCI-X */ 306 u16 vendor_id; 307 struct work_struct int_task_event; 308 wait_queue_head_t queue; /* sleep & wake process */ 309 struct dentry *dentry; /* debugfs dentry */ 310 }; 311 312 struct irq_mapping { 313 u8 barber_pole; 314 u8 valid_INT; 315 u8 interrupt[4]; 316 }; 317 318 struct resource_lists { 319 struct pci_resource *mem_head; 320 struct pci_resource *p_mem_head; 321 struct pci_resource *io_head; 322 struct pci_resource *bus_head; 323 struct irq_mapping *irqs; 324 }; 325 326 #define ROM_PHY_ADDR 0x0F0000 327 #define ROM_PHY_LEN 0x00ffff 328 329 #define PCI_HPC_ID 0xA0F7 330 #define PCI_SUB_HPC_ID 0xA2F7 331 #define PCI_SUB_HPC_ID2 0xA2F8 332 #define PCI_SUB_HPC_ID3 0xA2F9 333 #define PCI_SUB_HPC_ID_INTC 0xA2FA 334 #define PCI_SUB_HPC_ID4 0xA2FD 335 336 #define INT_BUTTON_IGNORE 0 337 #define INT_PRESENCE_ON 1 338 #define INT_PRESENCE_OFF 2 339 #define INT_SWITCH_CLOSE 3 340 #define INT_SWITCH_OPEN 4 341 #define INT_POWER_FAULT 5 342 #define INT_POWER_FAULT_CLEAR 6 343 #define INT_BUTTON_PRESS 7 344 #define INT_BUTTON_RELEASE 8 345 #define INT_BUTTON_CANCEL 9 346 347 #define STATIC_STATE 0 348 #define BLINKINGON_STATE 1 349 #define BLINKINGOFF_STATE 2 350 #define POWERON_STATE 3 351 #define POWEROFF_STATE 4 352 353 #define PCISLOT_INTERLOCK_CLOSED 0x00000001 354 #define PCISLOT_ADAPTER_PRESENT 0x00000002 355 #define PCISLOT_POWERED 0x00000004 356 #define PCISLOT_66_MHZ_OPERATION 0x00000008 357 #define PCISLOT_64_BIT_OPERATION 0x00000010 358 #define PCISLOT_REPLACE_SUPPORTED 0x00000020 359 #define PCISLOT_ADD_SUPPORTED 0x00000040 360 #define PCISLOT_INTERLOCK_SUPPORTED 0x00000080 361 #define PCISLOT_66_MHZ_SUPPORTED 0x00000100 362 #define PCISLOT_64_BIT_SUPPORTED 0x00000200 363 364 #define PCI_TO_PCI_BRIDGE_CLASS 0x00060400 365 366 #define INTERLOCK_OPEN 0x00000002 367 #define ADD_NOT_SUPPORTED 0x00000003 368 #define CARD_FUNCTIONING 0x00000005 369 #define ADAPTER_NOT_SAME 0x00000006 370 #define NO_ADAPTER_PRESENT 0x00000009 371 #define NOT_ENOUGH_RESOURCES 0x0000000B 372 #define DEVICE_TYPE_NOT_SUPPORTED 0x0000000C 373 #define POWER_FAILURE 0x0000000E 374 375 #define REMOVE_NOT_SUPPORTED 0x00000003 376 377 378 /* 379 * error Messages 380 */ 381 #define msg_initialization_err "Initialization failure, error=%d\n" 382 #define msg_HPC_rev_error "Unsupported revision of the PCI hot plug controller found.\n" 383 #define msg_HPC_non_compaq_or_intel "The PCI hot plug controller is not supported by this driver.\n" 384 #define msg_HPC_not_supported "this system is not supported by this version of cpqphpd. Upgrade to a newer version of cpqphpd\n" 385 #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" 386 #define msg_button_on "PCI slot #%d - powering on due to button press.\n" 387 #define msg_button_off "PCI slot #%d - powering off due to button press.\n" 388 #define msg_button_cancel "PCI slot #%d - action canceled due to button press.\n" 389 #define msg_button_ignore "PCI slot #%d - button press ignored. (action in progress...)\n" 390 391 392 /* debugfs functions for the hotplug controller info */ 393 void cpqhp_initialize_debugfs(void); 394 void cpqhp_shutdown_debugfs(void); 395 void cpqhp_create_debugfs_files(struct controller *ctrl); 396 void cpqhp_remove_debugfs_files(struct controller *ctrl); 397 398 /* controller functions */ 399 void cpqhp_pushbutton_thread(struct timer_list *t); 400 irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data); 401 int cpqhp_find_available_resources(struct controller *ctrl, 402 void __iomem *rom_start); 403 int cpqhp_event_start_thread(void); 404 void cpqhp_event_stop_thread(void); 405 struct pci_func *cpqhp_slot_create(unsigned char busnumber); 406 struct pci_func *cpqhp_slot_find(unsigned char bus, unsigned char device, 407 unsigned char index); 408 int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func); 409 int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func); 410 int cpqhp_hardware_test(struct controller *ctrl, int test_num); 411 412 /* resource functions */ 413 int cpqhp_resource_sort_and_combine(struct pci_resource **head); 414 415 /* pci functions */ 416 int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num); 417 int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num, 418 u8 slot); 419 int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug); 420 int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func *func); 421 int cpqhp_save_used_resources(struct controller *ctrl, struct pci_func *func); 422 int cpqhp_configure_board(struct controller *ctrl, struct pci_func *func); 423 int cpqhp_save_slot_config(struct controller *ctrl, struct pci_func *new_slot); 424 int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func); 425 void cpqhp_destroy_board_resources(struct pci_func *func); 426 int cpqhp_return_board_resources(struct pci_func *func, 427 struct resource_lists *resources); 428 void cpqhp_destroy_resource_list(struct resource_lists *resources); 429 int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func); 430 int cpqhp_unconfigure_device(struct pci_func *func); 431 432 /* Global variables */ 433 extern int cpqhp_debug; 434 extern int cpqhp_legacy_mode; 435 extern struct controller *cpqhp_ctrl_list; 436 extern struct pci_func *cpqhp_slot_list[256]; 437 extern struct irq_routing_table *cpqhp_routing_table; 438 439 /* these can be gotten rid of, but for debugging they are purty */ 440 extern u8 cpqhp_nic_irq; 441 extern u8 cpqhp_disk_irq; 442 443 444 /* inline functions */ 445 slot_name(struct slot * slot)446 static inline const char *slot_name(struct slot *slot) 447 { 448 return hotplug_slot_name(&slot->hotplug_slot); 449 } 450 to_slot(struct hotplug_slot * hotplug_slot)451 static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot) 452 { 453 return container_of(hotplug_slot, struct slot, hotplug_slot); 454 } 455 456 /* 457 * return_resource 458 * 459 * Puts node back in the resource list pointed to by head 460 */ return_resource(struct pci_resource ** head,struct pci_resource * node)461 static inline void return_resource(struct pci_resource **head, 462 struct pci_resource *node) 463 { 464 if (!node || !head) 465 return; 466 node->next = *head; 467 *head = node; 468 } 469 set_SOGO(struct controller * ctrl)470 static inline void set_SOGO(struct controller *ctrl) 471 { 472 u16 misc; 473 474 misc = readw(ctrl->hpc_reg + MISC); 475 misc = (misc | 0x0001) & 0xFFFB; 476 writew(misc, ctrl->hpc_reg + MISC); 477 } 478 479 amber_LED_on(struct controller * ctrl,u8 slot)480 static inline void amber_LED_on(struct controller *ctrl, u8 slot) 481 { 482 u32 led_control; 483 484 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 485 led_control |= (0x01010000L << slot); 486 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 487 } 488 489 amber_LED_off(struct controller * ctrl,u8 slot)490 static inline void amber_LED_off(struct controller *ctrl, u8 slot) 491 { 492 u32 led_control; 493 494 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 495 led_control &= ~(0x01010000L << slot); 496 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 497 } 498 499 read_amber_LED(struct controller * ctrl,u8 slot)500 static inline int read_amber_LED(struct controller *ctrl, u8 slot) 501 { 502 u32 led_control; 503 504 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 505 led_control &= (0x01010000L << slot); 506 507 return led_control ? 1 : 0; 508 } 509 510 green_LED_on(struct controller * ctrl,u8 slot)511 static inline void green_LED_on(struct controller *ctrl, u8 slot) 512 { 513 u32 led_control; 514 515 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 516 led_control |= 0x0101L << slot; 517 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 518 } 519 green_LED_off(struct controller * ctrl,u8 slot)520 static inline void green_LED_off(struct controller *ctrl, u8 slot) 521 { 522 u32 led_control; 523 524 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 525 led_control &= ~(0x0101L << slot); 526 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 527 } 528 529 green_LED_blink(struct controller * ctrl,u8 slot)530 static inline void green_LED_blink(struct controller *ctrl, u8 slot) 531 { 532 u32 led_control; 533 534 led_control = readl(ctrl->hpc_reg + LED_CONTROL); 535 led_control &= ~(0x0101L << slot); 536 led_control |= (0x0001L << slot); 537 writel(led_control, ctrl->hpc_reg + LED_CONTROL); 538 } 539 540 slot_disable(struct controller * ctrl,u8 slot)541 static inline void slot_disable(struct controller *ctrl, u8 slot) 542 { 543 u8 slot_enable; 544 545 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE); 546 slot_enable &= ~(0x01 << slot); 547 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE); 548 } 549 550 slot_enable(struct controller * ctrl,u8 slot)551 static inline void slot_enable(struct controller *ctrl, u8 slot) 552 { 553 u8 slot_enable; 554 555 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE); 556 slot_enable |= (0x01 << slot); 557 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE); 558 } 559 560 is_slot_enabled(struct controller * ctrl,u8 slot)561 static inline u8 is_slot_enabled(struct controller *ctrl, u8 slot) 562 { 563 u8 slot_enable; 564 565 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE); 566 slot_enable &= (0x01 << slot); 567 return slot_enable ? 1 : 0; 568 } 569 570 read_slot_enable(struct controller * ctrl)571 static inline u8 read_slot_enable(struct controller *ctrl) 572 { 573 return readb(ctrl->hpc_reg + SLOT_ENABLE); 574 } 575 576 577 /** 578 * get_controller_speed - find the current frequency/mode of controller. 579 * 580 * @ctrl: controller to get frequency/mode for. 581 * 582 * Returns controller speed. 583 */ get_controller_speed(struct controller * ctrl)584 static inline u8 get_controller_speed(struct controller *ctrl) 585 { 586 u8 curr_freq; 587 u16 misc; 588 589 if (ctrl->pcix_support) { 590 curr_freq = readb(ctrl->hpc_reg + NEXT_CURR_FREQ); 591 if ((curr_freq & 0xB0) == 0xB0) 592 return PCI_SPEED_133MHz_PCIX; 593 if ((curr_freq & 0xA0) == 0xA0) 594 return PCI_SPEED_100MHz_PCIX; 595 if ((curr_freq & 0x90) == 0x90) 596 return PCI_SPEED_66MHz_PCIX; 597 if (curr_freq & 0x10) 598 return PCI_SPEED_66MHz; 599 600 return PCI_SPEED_33MHz; 601 } 602 603 misc = readw(ctrl->hpc_reg + MISC); 604 return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz; 605 } 606 607 608 /** 609 * get_adapter_speed - find the max supported frequency/mode of adapter. 610 * 611 * @ctrl: hotplug controller. 612 * @hp_slot: hotplug slot where adapter is installed. 613 * 614 * Returns adapter speed. 615 */ get_adapter_speed(struct controller * ctrl,u8 hp_slot)616 static inline u8 get_adapter_speed(struct controller *ctrl, u8 hp_slot) 617 { 618 u32 temp_dword = readl(ctrl->hpc_reg + NON_INT_INPUT); 619 dbg("slot: %d, PCIXCAP: %8x\n", hp_slot, temp_dword); 620 if (ctrl->pcix_support) { 621 if (temp_dword & (0x10000 << hp_slot)) 622 return PCI_SPEED_133MHz_PCIX; 623 if (temp_dword & (0x100 << hp_slot)) 624 return PCI_SPEED_66MHz_PCIX; 625 } 626 627 if (temp_dword & (0x01 << hp_slot)) 628 return PCI_SPEED_66MHz; 629 630 return PCI_SPEED_33MHz; 631 } 632 enable_slot_power(struct controller * ctrl,u8 slot)633 static inline void enable_slot_power(struct controller *ctrl, u8 slot) 634 { 635 u8 slot_power; 636 637 slot_power = readb(ctrl->hpc_reg + SLOT_POWER); 638 slot_power |= (0x01 << slot); 639 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER); 640 } 641 disable_slot_power(struct controller * ctrl,u8 slot)642 static inline void disable_slot_power(struct controller *ctrl, u8 slot) 643 { 644 u8 slot_power; 645 646 slot_power = readb(ctrl->hpc_reg + SLOT_POWER); 647 slot_power &= ~(0x01 << slot); 648 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER); 649 } 650 651 cpq_get_attention_status(struct controller * ctrl,struct slot * slot)652 static inline int cpq_get_attention_status(struct controller *ctrl, struct slot *slot) 653 { 654 u8 hp_slot; 655 656 hp_slot = slot->device - ctrl->slot_device_offset; 657 658 return read_amber_LED(ctrl, hp_slot); 659 } 660 661 get_slot_enabled(struct controller * ctrl,struct slot * slot)662 static inline int get_slot_enabled(struct controller *ctrl, struct slot *slot) 663 { 664 u8 hp_slot; 665 666 hp_slot = slot->device - ctrl->slot_device_offset; 667 668 return is_slot_enabled(ctrl, hp_slot); 669 } 670 671 cpq_get_latch_status(struct controller * ctrl,struct slot * slot)672 static inline int cpq_get_latch_status(struct controller *ctrl, 673 struct slot *slot) 674 { 675 u32 status; 676 u8 hp_slot; 677 678 hp_slot = slot->device - ctrl->slot_device_offset; 679 dbg("%s: slot->device = %d, ctrl->slot_device_offset = %d\n", 680 __func__, slot->device, ctrl->slot_device_offset); 681 682 status = (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot)); 683 684 return (status == 0) ? 1 : 0; 685 } 686 687 get_presence_status(struct controller * ctrl,struct slot * slot)688 static inline int get_presence_status(struct controller *ctrl, 689 struct slot *slot) 690 { 691 int presence_save = 0; 692 u8 hp_slot; 693 u32 tempdword; 694 695 hp_slot = slot->device - ctrl->slot_device_offset; 696 697 tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR); 698 presence_save = (int) ((((~tempdword) >> 23) | ((~tempdword) >> 15)) 699 >> hp_slot) & 0x02; 700 701 return presence_save; 702 } 703 wait_for_ctrl_irq(struct controller * ctrl)704 static inline int wait_for_ctrl_irq(struct controller *ctrl) 705 { 706 DECLARE_WAITQUEUE(wait, current); 707 int retval = 0; 708 709 dbg("%s - start\n", __func__); 710 add_wait_queue(&ctrl->queue, &wait); 711 /* Sleep for up to 1 second to wait for the LED to change. */ 712 msleep_interruptible(1000); 713 remove_wait_queue(&ctrl->queue, &wait); 714 if (signal_pending(current)) 715 retval = -EINTR; 716 717 dbg("%s - end\n", __func__); 718 return retval; 719 } 720 721 #include <asm/pci_x86.h> cpqhp_routing_table_length(void)722 static inline int cpqhp_routing_table_length(void) 723 { 724 BUG_ON(cpqhp_routing_table == NULL); 725 return ((cpqhp_routing_table->size - sizeof(struct irq_routing_table)) / 726 sizeof(struct irq_info)); 727 } 728 729 #endif 730