drivers/pci/hotplug/cpqphp.h

   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 #include <linux/sched.h>        /* for signal_pending() */
  36
  37 #define MY_NAME "cpqphp"
  38
  39 #define dbg(fmt, arg...) do { if (cpqhp_debug) printk(KERN_DEBUG "%s: " fmt, MY_NAME, ## arg); } while (0)
  40 #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg)
  41 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
  42 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
  43
  44
  45
  46 struct smbios_system_slot {
  47         u8 type;
  48         u8 length;
  49         u16 handle;
  50         u8 name_string_num;
  51         u8 slot_type;
  52         u8 slot_width;
  53         u8 slot_current_usage;
  54         u8 slot_length;
  55         u16 slot_number;
  56         u8 properties1;
  57         u8 properties2;
  58 } __attribute__ ((packed));
  59
  60 /* offsets to the smbios generic type based on the above structure layout */
  61 enum smbios_system_slot_offsets {
  62         SMBIOS_SLOT_GENERIC_TYPE =      offsetof(struct smbios_system_slot, type),
  63         SMBIOS_SLOT_GENERIC_LENGTH =    offsetof(struct smbios_system_slot, length),
  64         SMBIOS_SLOT_GENERIC_HANDLE =    offsetof(struct smbios_system_slot, handle),
  65         SMBIOS_SLOT_NAME_STRING_NUM =   offsetof(struct smbios_system_slot, name_string_num),
  66         SMBIOS_SLOT_TYPE =              offsetof(struct smbios_system_slot, slot_type),
  67         SMBIOS_SLOT_WIDTH =             offsetof(struct smbios_system_slot, slot_width),
  68         SMBIOS_SLOT_CURRENT_USAGE =     offsetof(struct smbios_system_slot, slot_current_usage),
  69         SMBIOS_SLOT_LENGTH =            offsetof(struct smbios_system_slot, slot_length),
  70         SMBIOS_SLOT_NUMBER =            offsetof(struct smbios_system_slot, slot_number),
  71         SMBIOS_SLOT_PROPERTIES1 =       offsetof(struct smbios_system_slot, properties1),
  72         SMBIOS_SLOT_PROPERTIES2 =       offsetof(struct smbios_system_slot, properties2),
  73 };
  74
  75 struct smbios_generic {
  76         u8 type;
  77         u8 length;
  78         u16 handle;
  79 } __attribute__ ((packed));
  80
  81 /* offsets to the smbios generic type based on the above structure layout */
  82 enum smbios_generic_offsets {
  83         SMBIOS_GENERIC_TYPE =   offsetof(struct smbios_generic, type),
  84         SMBIOS_GENERIC_LENGTH = offsetof(struct smbios_generic, length),
  85         SMBIOS_GENERIC_HANDLE = offsetof(struct smbios_generic, handle),
  86 };
  87
  88 struct smbios_entry_point {
  89         char anchor[4];
  90         u8 ep_checksum;
  91         u8 ep_length;
  92         u8 major_version;
  93         u8 minor_version;
  94         u16 max_size_entry;
  95         u8 ep_rev;
  96         u8 reserved[5];
  97         char int_anchor[5];
  98         u8 int_checksum;
  99         u16 st_length;
 100         u32 st_address;
 101         u16 number_of_entrys;
 102         u8 bcd_rev;
 103 } __attribute__ ((packed));
 104
 105 /* offsets to the smbios entry point based on the above structure layout */
 106 enum smbios_entry_point_offsets {
 107         ANCHOR =                offsetof(struct smbios_entry_point, anchor[0]),
 108         EP_CHECKSUM =           offsetof(struct smbios_entry_point, ep_checksum),
 109         EP_LENGTH =             offsetof(struct smbios_entry_point, ep_length),
 110         MAJOR_VERSION =         offsetof(struct smbios_entry_point, major_version),
 111         MINOR_VERSION =         offsetof(struct smbios_entry_point, minor_version),
 112         MAX_SIZE_ENTRY =        offsetof(struct smbios_entry_point, max_size_entry),
 113         EP_REV =                offsetof(struct smbios_entry_point, ep_rev),
 114         INT_ANCHOR =            offsetof(struct smbios_entry_point, int_anchor[0]),
 115         INT_CHECKSUM =          offsetof(struct smbios_entry_point, int_checksum),
 116         ST_LENGTH =             offsetof(struct smbios_entry_point, st_length),
 117         ST_ADDRESS =            offsetof(struct smbios_entry_point, st_address),
 118         NUMBER_OF_ENTRYS =      offsetof(struct smbios_entry_point, number_of_entrys),
 119         BCD_REV =               offsetof(struct smbios_entry_point, bcd_rev),
 120 };
 121
 122 struct ctrl_reg {                       /* offset */
 123         u8      slot_RST;               /* 0x00 */
 124         u8      slot_enable;            /* 0x01 */
 125         u16     misc;                   /* 0x02 */
 126         u32     led_control;            /* 0x04 */
 127         u32     int_input_clear;        /* 0x08 */
 128         u32     int_mask;               /* 0x0a */
 129         u8      reserved0;              /* 0x10 */
 130         u8      reserved1;              /* 0x11 */
 131         u8      reserved2;              /* 0x12 */
 132         u8      gen_output_AB;          /* 0x13 */
 133         u32     non_int_input;          /* 0x14 */
 134         u32     reserved3;              /* 0x18 */
 135         u32     reserved4;              /* 0x1a */
 136         u32     reserved5;              /* 0x20 */
 137         u8      reserved6;              /* 0x24 */
 138         u8      reserved7;              /* 0x25 */
 139         u16     reserved8;              /* 0x26 */
 140         u8      slot_mask;              /* 0x28 */
 141         u8      reserved9;              /* 0x29 */
 142         u8      reserved10;             /* 0x2a */
 143         u8      reserved11;             /* 0x2b */
 144         u8      slot_SERR;              /* 0x2c */
 145         u8      slot_power;             /* 0x2d */
 146         u8      reserved12;             /* 0x2e */
 147         u8      reserved13;             /* 0x2f */
 148         u8      next_curr_freq;         /* 0x30 */
 149         u8      reset_freq_mode;        /* 0x31 */
 150 } __attribute__ ((packed));
 151
 152 /* offsets to the controller registers based on the above structure layout */
 153 enum ctrl_offsets {
 154         SLOT_RST =              offsetof(struct ctrl_reg, slot_RST),
 155         SLOT_ENABLE =           offsetof(struct ctrl_reg, slot_enable),
 156         MISC =                  offsetof(struct ctrl_reg, misc),
 157         LED_CONTROL =           offsetof(struct ctrl_reg, led_control),
 158         INT_INPUT_CLEAR =       offsetof(struct ctrl_reg, int_input_clear),
 159         INT_MASK =              offsetof(struct ctrl_reg, int_mask),
 160         CTRL_RESERVED0 =        offsetof(struct ctrl_reg, reserved0),
 161         CTRL_RESERVED1 =        offsetof(struct ctrl_reg, reserved1),
 162         CTRL_RESERVED2 =        offsetof(struct ctrl_reg, reserved1),
 163         GEN_OUTPUT_AB =         offsetof(struct ctrl_reg, gen_output_AB),
 164         NON_INT_INPUT =         offsetof(struct ctrl_reg, non_int_input),
 165         CTRL_RESERVED3 =        offsetof(struct ctrl_reg, reserved3),
 166         CTRL_RESERVED4 =        offsetof(struct ctrl_reg, reserved4),
 167         CTRL_RESERVED5 =        offsetof(struct ctrl_reg, reserved5),
 168         CTRL_RESERVED6 =        offsetof(struct ctrl_reg, reserved6),
 169         CTRL_RESERVED7 =        offsetof(struct ctrl_reg, reserved7),
 170         CTRL_RESERVED8 =        offsetof(struct ctrl_reg, reserved8),
 171         SLOT_MASK =             offsetof(struct ctrl_reg, slot_mask),
 172         CTRL_RESERVED9 =        offsetof(struct ctrl_reg, reserved9),
 173         CTRL_RESERVED10 =       offsetof(struct ctrl_reg, reserved10),
 174         CTRL_RESERVED11 =       offsetof(struct ctrl_reg, reserved11),
 175         SLOT_SERR =             offsetof(struct ctrl_reg, slot_SERR),
 176         SLOT_POWER =            offsetof(struct ctrl_reg, slot_power),
 177         NEXT_CURR_FREQ =        offsetof(struct ctrl_reg, next_curr_freq),
 178         RESET_FREQ_MODE =       offsetof(struct ctrl_reg, reset_freq_mode),
 179 };
 180
 181 struct hrt {
 182         char sig0;
 183         char sig1;
 184         char sig2;
 185         char sig3;
 186         u16 unused_IRQ;
 187         u16 PCIIRQ;
 188         u8 number_of_entries;
 189         u8 revision;
 190         u16 reserved1;
 191         u32 reserved2;
 192 } __attribute__ ((packed));
 193
 194 /* offsets to the hotplug resource table registers based on the above
 195  * structure layout
 196  */
 197 enum hrt_offsets {
 198         SIG0 =                  offsetof(struct hrt, sig0),
 199         SIG1 =                  offsetof(struct hrt, sig1),
 200         SIG2 =                  offsetof(struct hrt, sig2),
 201         SIG3 =                  offsetof(struct hrt, sig3),
 202         UNUSED_IRQ =            offsetof(struct hrt, unused_IRQ),
 203         PCIIRQ =                offsetof(struct hrt, PCIIRQ),
 204         NUMBER_OF_ENTRIES =     offsetof(struct hrt, number_of_entries),
 205         REVISION =              offsetof(struct hrt, revision),
 206         HRT_RESERVED1 =         offsetof(struct hrt, reserved1),
 207         HRT_RESERVED2 =         offsetof(struct hrt, reserved2),
 208 };
 209
 210 struct slot_rt {
 211         u8 dev_func;
 212         u8 primary_bus;
 213         u8 secondary_bus;
 214         u8 max_bus;
 215         u16 io_base;
 216         u16 io_length;
 217         u16 mem_base;
 218         u16 mem_length;
 219         u16 pre_mem_base;
 220         u16 pre_mem_length;
 221 } __attribute__ ((packed));
 222
 223 /* offsets to the hotplug slot resource table registers based on the above
 224  * structure layout
 225  */
 226 enum slot_rt_offsets {
 227         DEV_FUNC =              offsetof(struct slot_rt, dev_func),
 228         PRIMARY_BUS =           offsetof(struct slot_rt, primary_bus),
 229         SECONDARY_BUS =         offsetof(struct slot_rt, secondary_bus),
 230         MAX_BUS =               offsetof(struct slot_rt, max_bus),
 231         IO_BASE =               offsetof(struct slot_rt, io_base),
 232         IO_LENGTH =             offsetof(struct slot_rt, io_length),
 233         MEM_BASE =              offsetof(struct slot_rt, mem_base),
 234         MEM_LENGTH =            offsetof(struct slot_rt, mem_length),
 235         PRE_MEM_BASE =          offsetof(struct slot_rt, pre_mem_base),
 236         PRE_MEM_LENGTH =        offsetof(struct slot_rt, pre_mem_length),
 237 };
 238
 239 struct pci_func {
 240         struct pci_func *next;
 241         u8 bus;
 242         u8 device;
 243         u8 function;
 244         u8 is_a_board;
 245         u16 status;
 246         u8 configured;
 247         u8 switch_save;
 248         u8 presence_save;
 249         u32 base_length[0x06];
 250         u8 base_type[0x06];
 251         u16 reserved2;
 252         u32 config_space[0x20];
 253         struct pci_resource *mem_head;
 254         struct pci_resource *p_mem_head;
 255         struct pci_resource *io_head;
 256         struct pci_resource *bus_head;
 257         struct timer_list *p_task_event;
 258         struct pci_dev *pci_dev;
 259 };
 260
 261 struct slot {
 262         struct slot *next;
 263         u8 bus;
 264         u8 device;
 265         u8 number;
 266         u8 is_a_board;
 267         u8 configured;
 268         u8 state;
 269         u8 switch_save;
 270         u8 presence_save;
 271         u32 capabilities;
 272         u16 reserved2;
 273         struct timer_list task_event;
 274         u8 hp_slot;
 275         struct controller *ctrl;
 276         void __iomem *p_sm_slot;
 277         struct hotplug_slot *hotplug_slot;
 278 };
 279
 280 struct pci_resource {
 281         struct pci_resource *next;
 282         u32 base;
 283         u32 length;
 284 };
 285
 286 struct event_info {
 287         u32 event_type;
 288         u8 hp_slot;
 289 };
 290
 291 struct controller {
 292         struct controller *next;
 293         u32 ctrl_int_comp;
 294         struct mutex crit_sect; /* critical section mutex */
 295         void __iomem *hpc_reg;  /* cookie for our pci controller location */
 296         struct pci_resource *mem_head;
 297         struct pci_resource *p_mem_head;
 298         struct pci_resource *io_head;
 299         struct pci_resource *bus_head;
 300         struct pci_dev *pci_dev;
 301         struct pci_bus *pci_bus;
 302         struct event_info event_queue[10];
 303         struct slot *slot;
 304         u8 next_event;
 305         u8 interrupt;
 306         u8 cfgspc_irq;
 307         u8 bus;                 /* bus number for the pci hotplug controller */
 308         u8 rev;
 309         u8 slot_device_offset;
 310         u8 first_slot;
 311         u8 add_support;
 312         u8 push_flag;
 313         u8 push_button;                 /* 0 = no pushbutton, 1 = pushbutton present */
 314         u8 slot_switch_type;            /* 0 = no switch, 1 = switch present */
 315         u8 defeature_PHP;               /* 0 = PHP not supported, 1 = PHP supported */
 316         u8 alternate_base_address;      /* 0 = not supported, 1 = supported */
 317         u8 pci_config_space;            /* Index/data access to working registers 0 = not supported, 1 = supported */
 318         u8 pcix_speed_capability;       /* PCI-X */
 319         u8 pcix_support;                /* PCI-X */
 320         u16 vendor_id;
 321         struct work_struct int_task_event;
 322         wait_queue_head_t queue;        /* sleep & wake process */
 323         struct dentry *dentry;          /* debugfs dentry */
 324 };
 325
 326 struct irq_mapping {
 327         u8 barber_pole;
 328         u8 valid_INT;
 329         u8 interrupt[4];
 330 };
 331
 332 struct resource_lists {
 333         struct pci_resource *mem_head;
 334         struct pci_resource *p_mem_head;
 335         struct pci_resource *io_head;
 336         struct pci_resource *bus_head;
 337         struct irq_mapping *irqs;
 338 };
 339
 340 #define ROM_PHY_ADDR                    0x0F0000
 341 #define ROM_PHY_LEN                     0x00ffff
 342
 343 #define PCI_HPC_ID                      0xA0F7
 344 #define PCI_SUB_HPC_ID                  0xA2F7
 345 #define PCI_SUB_HPC_ID2                 0xA2F8
 346 #define PCI_SUB_HPC_ID3                 0xA2F9
 347 #define PCI_SUB_HPC_ID_INTC             0xA2FA
 348 #define PCI_SUB_HPC_ID4                 0xA2FD
 349
 350 #define INT_BUTTON_IGNORE               0
 351 #define INT_PRESENCE_ON                 1
 352 #define INT_PRESENCE_OFF                2
 353 #define INT_SWITCH_CLOSE                3
 354 #define INT_SWITCH_OPEN                 4
 355 #define INT_POWER_FAULT                 5
 356 #define INT_POWER_FAULT_CLEAR           6
 357 #define INT_BUTTON_PRESS                7
 358 #define INT_BUTTON_RELEASE              8
 359 #define INT_BUTTON_CANCEL               9
 360
 361 #define STATIC_STATE                    0
 362 #define BLINKINGON_STATE                1
 363 #define BLINKINGOFF_STATE               2
 364 #define POWERON_STATE                   3
 365 #define POWEROFF_STATE                  4
 366
 367 #define PCISLOT_INTERLOCK_CLOSED        0x00000001
 368 #define PCISLOT_ADAPTER_PRESENT         0x00000002
 369 #define PCISLOT_POWERED                 0x00000004
 370 #define PCISLOT_66_MHZ_OPERATION        0x00000008
 371 #define PCISLOT_64_BIT_OPERATION        0x00000010
 372 #define PCISLOT_REPLACE_SUPPORTED       0x00000020
 373 #define PCISLOT_ADD_SUPPORTED           0x00000040
 374 #define PCISLOT_INTERLOCK_SUPPORTED     0x00000080
 375 #define PCISLOT_66_MHZ_SUPPORTED        0x00000100
 376 #define PCISLOT_64_BIT_SUPPORTED        0x00000200
 377
 378 #define PCI_TO_PCI_BRIDGE_CLASS         0x00060400
 379
 380 #define INTERLOCK_OPEN                  0x00000002
 381 #define ADD_NOT_SUPPORTED               0x00000003
 382 #define CARD_FUNCTIONING                0x00000005
 383 #define ADAPTER_NOT_SAME                0x00000006
 384 #define NO_ADAPTER_PRESENT              0x00000009
 385 #define NOT_ENOUGH_RESOURCES            0x0000000B
 386 #define DEVICE_TYPE_NOT_SUPPORTED       0x0000000C
 387 #define POWER_FAILURE                   0x0000000E
 388
 389 #define REMOVE_NOT_SUPPORTED            0x00000003
 390
 391
 392 /*
 393  * error Messages
 394  */
 395 #define msg_initialization_err  "Initialization failure, error=%d\n"
 396 #define msg_HPC_rev_error       "Unsupported revision of the PCI hot plug controller found.\n"
 397 #define msg_HPC_non_compaq_or_intel     "The PCI hot plug controller is not supported by this driver.\n"
 398 #define msg_HPC_not_supported   "this system is not supported by this version of cpqphpd. Upgrade to a newer version of cpqphpd\n"
 399 #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"
 400 #define msg_button_on           "PCI slot #%d - powering on due to button press.\n"
 401 #define msg_button_off          "PCI slot #%d - powering off due to button press.\n"
 402 #define msg_button_cancel       "PCI slot #%d - action canceled due to button press.\n"
 403 #define msg_button_ignore       "PCI slot #%d - button press ignored.  (action in progress...)\n"
 404
 405
 406 /* debugfs functions for the hotplug controller info */
 407 void cpqhp_initialize_debugfs(void);
 408 void cpqhp_shutdown_debugfs(void);
 409 void cpqhp_create_debugfs_files(struct controller *ctrl);
 410 void cpqhp_remove_debugfs_files(struct controller *ctrl);
 411
 412 /* controller functions */
 413 void cpqhp_pushbutton_thread(unsigned long event_pointer);
 414 irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data);
 415 int cpqhp_find_available_resources(struct controller *ctrl,
 416                                    void __iomem *rom_start);
 417 int cpqhp_event_start_thread(void);
 418 void cpqhp_event_stop_thread(void);
 419 struct pci_func *cpqhp_slot_create(unsigned char busnumber);
 420 struct pci_func *cpqhp_slot_find(unsigned char bus, unsigned char device,
 421                                  unsigned char index);
 422 int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func);
 423 int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func);
 424 int cpqhp_hardware_test(struct controller *ctrl, int test_num);
 425
 426 /* resource functions */
 427 int     cpqhp_resource_sort_and_combine(struct pci_resource **head);
 428
 429 /* pci functions */
 430 int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
 431 int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num,
 432                       u8 slot);
 433 int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug);
 434 int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func *func);
 435 int cpqhp_save_used_resources(struct controller *ctrl, struct pci_func *func);
 436 int cpqhp_configure_board(struct controller *ctrl, struct pci_func *func);
 437 int cpqhp_save_slot_config(struct controller *ctrl, struct pci_func *new_slot);
 438 int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func);
 439 void cpqhp_destroy_board_resources(struct pci_func *func);
 440 int cpqhp_return_board_resources(struct pci_func *func,
 441                                  struct resource_lists *resources);
 442 void cpqhp_destroy_resource_list(struct resource_lists *resources);
 443 int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func);
 444 int cpqhp_unconfigure_device(struct pci_func *func);
 445
 446 /* Global variables */
 447 extern int cpqhp_debug;
 448 extern int cpqhp_legacy_mode;
 449 extern struct controller *cpqhp_ctrl_list;
 450 extern struct pci_func *cpqhp_slot_list[256];
 451 extern struct irq_routing_table *cpqhp_routing_table;
 452
 453 /* these can be gotten rid of, but for debugging they are purty */
 454 extern u8 cpqhp_nic_irq;
 455 extern u8 cpqhp_disk_irq;
 456
 457
 458 /* inline functions */
 459
 460 static inline const char *slot_name(struct slot *slot)
 461 {
 462         return hotplug_slot_name(slot->hotplug_slot);
 463 }
 464
 465 /*
 466  * return_resource
 467  *
 468  * Puts node back in the resource list pointed to by head
 469  */
 470 static inline void return_resource(struct pci_resource **head,
 471                                    struct pci_resource *node)
 472 {
 473         if (!node || !head)
 474                 return;
 475         node->next = *head;
 476         *head = node;
 477 }
 478
 479 static inline void set_SOGO(struct controller *ctrl)
 480 {
 481         u16 misc;
 482
 483         misc = readw(ctrl->hpc_reg + MISC);
 484         misc = (misc | 0x0001) & 0xFFFB;
 485         writew(misc, ctrl->hpc_reg + MISC);
 486 }
 487
 488
 489 static inline void amber_LED_on(struct controller *ctrl, u8 slot)
 490 {
 491         u32 led_control;
 492
 493         led_control = readl(ctrl->hpc_reg + LED_CONTROL);
 494         led_control |= (0x01010000L << slot);
 495         writel(led_control, ctrl->hpc_reg + LED_CONTROL);
 496 }
 497
 498
 499 static inline void amber_LED_off(struct controller *ctrl, u8 slot)
 500 {
 501         u32 led_control;
 502
 503         led_control = readl(ctrl->hpc_reg + LED_CONTROL);
 504         led_control &= ~(0x01010000L << slot);
 505         writel(led_control, ctrl->hpc_reg + LED_CONTROL);
 506 }
 507
 508
 509 static inline int read_amber_LED(struct controller *ctrl, u8 slot)
 510 {
 511         u32 led_control;
 512
 513         led_control = readl(ctrl->hpc_reg + LED_CONTROL);
 514         led_control &= (0x01010000L << slot);
 515
 516         return led_control ? 1 : 0;
 517 }
 518
 519
 520 static inline void green_LED_on(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 static inline void green_LED_off(struct controller *ctrl, u8 slot)
 530 {
 531         u32 led_control;
 532
 533         led_control = readl(ctrl->hpc_reg + LED_CONTROL);
 534         led_control &= ~(0x0101L << slot);
 535         writel(led_control, ctrl->hpc_reg + LED_CONTROL);
 536 }
 537
 538
 539 static inline void green_LED_blink(struct controller *ctrl, u8 slot)
 540 {
 541         u32 led_control;
 542
 543         led_control = readl(ctrl->hpc_reg + LED_CONTROL);
 544         led_control &= ~(0x0101L << slot);
 545         led_control |= (0x0001L << slot);
 546         writel(led_control, ctrl->hpc_reg + LED_CONTROL);
 547 }
 548
 549
 550 static inline void slot_disable(struct controller *ctrl, u8 slot)
 551 {
 552         u8 slot_enable;
 553
 554         slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
 555         slot_enable &= ~(0x01 << slot);
 556         writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
 557 }
 558
 559
 560 static inline void slot_enable(struct controller *ctrl, u8 slot)
 561 {
 562         u8 slot_enable;
 563
 564         slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
 565         slot_enable |= (0x01 << slot);
 566         writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
 567 }
 568
 569
 570 static inline u8 is_slot_enabled(struct controller *ctrl, u8 slot)
 571 {
 572         u8 slot_enable;
 573
 574         slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
 575         slot_enable &= (0x01 << slot);
 576         return slot_enable ? 1 : 0;
 577 }
 578
 579
 580 static inline u8 read_slot_enable(struct controller *ctrl)
 581 {
 582         return readb(ctrl->hpc_reg + SLOT_ENABLE);
 583 }
 584
 585
 586 /**
 587  * get_controller_speed - find the current frequency/mode of controller.
 588  *
 589  * @ctrl: controller to get frequency/mode for.
 590  *
 591  * Returns controller speed.
 592  */
 593 static inline u8 get_controller_speed(struct controller *ctrl)
 594 {
 595         u8 curr_freq;
 596         u16 misc;
 597
 598         if (ctrl->pcix_support) {
 599                 curr_freq = readb(ctrl->hpc_reg + NEXT_CURR_FREQ);
 600                 if ((curr_freq & 0xB0) == 0xB0)
 601                         return PCI_SPEED_133MHz_PCIX;
 602                 if ((curr_freq & 0xA0) == 0xA0)
 603                         return PCI_SPEED_100MHz_PCIX;
 604                 if ((curr_freq & 0x90) == 0x90)
 605                         return PCI_SPEED_66MHz_PCIX;
 606                 if (curr_freq & 0x10)
 607                         return PCI_SPEED_66MHz;
 608
 609                 return PCI_SPEED_33MHz;
 610         }
 611
 612         misc = readw(ctrl->hpc_reg + MISC);
 613         return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
 614 }
 615
 616
 617 /**
 618  * get_adapter_speed - find the max supported frequency/mode of adapter.
 619  *
 620  * @ctrl: hotplug controller.
 621  * @hp_slot: hotplug slot where adapter is installed.
 622  *
 623  * Returns adapter speed.
 624  */
 625 static inline u8 get_adapter_speed(struct controller *ctrl, u8 hp_slot)
 626 {
 627         u32 temp_dword = readl(ctrl->hpc_reg + NON_INT_INPUT);
 628         dbg("slot: %d, PCIXCAP: %8x\n", hp_slot, temp_dword);
 629         if (ctrl->pcix_support) {
 630                 if (temp_dword & (0x10000 << hp_slot))
 631                         return PCI_SPEED_133MHz_PCIX;
 632                 if (temp_dword & (0x100 << hp_slot))
 633                         return PCI_SPEED_66MHz_PCIX;
 634         }
 635
 636         if (temp_dword & (0x01 << hp_slot))
 637                 return PCI_SPEED_66MHz;
 638
 639         return PCI_SPEED_33MHz;
 640 }
 641
 642 static inline void enable_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 static inline void disable_slot_power(struct controller *ctrl, u8 slot)
 652 {
 653         u8 slot_power;
 654
 655         slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
 656         slot_power &= ~(0x01 << slot);
 657         writeb(slot_power, ctrl->hpc_reg + SLOT_POWER);
 658 }
 659
 660
 661 static inline int cpq_get_attention_status(struct controller *ctrl, struct slot *slot)
 662 {
 663         u8 hp_slot;
 664
 665         hp_slot = slot->device - ctrl->slot_device_offset;
 666
 667         return read_amber_LED(ctrl, hp_slot);
 668 }
 669
 670
 671 static inline int get_slot_enabled(struct controller *ctrl, struct slot *slot)
 672 {
 673         u8 hp_slot;
 674
 675         hp_slot = slot->device - ctrl->slot_device_offset;
 676
 677         return is_slot_enabled(ctrl, hp_slot);
 678 }
 679
 680
 681 static inline int cpq_get_latch_status(struct controller *ctrl,
 682                                        struct slot *slot)
 683 {
 684         u32 status;
 685         u8 hp_slot;
 686
 687         hp_slot = slot->device - ctrl->slot_device_offset;
 688         dbg("%s: slot->device = %d, ctrl->slot_device_offset = %d\n",
 689             __func__, slot->device, ctrl->slot_device_offset);
 690
 691         status = (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot));
 692
 693         return (status == 0) ? 1 : 0;
 694 }
 695
 696
 697 static inline int get_presence_status(struct controller *ctrl,
 698                                       struct slot *slot)
 699 {
 700         int presence_save = 0;
 701         u8 hp_slot;
 702         u32 tempdword;
 703
 704         hp_slot = slot->device - ctrl->slot_device_offset;
 705
 706         tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
 707         presence_save = (int) ((((~tempdword) >> 23) | ((~tempdword) >> 15))
 708                                 >> hp_slot) & 0x02;
 709
 710         return presence_save;
 711 }
 712
 713 static inline int wait_for_ctrl_irq(struct controller *ctrl)
 714 {
 715         DECLARE_WAITQUEUE(wait, current);
 716         int retval = 0;
 717
 718         dbg("%s - start\n", __func__);
 719         add_wait_queue(&ctrl->queue, &wait);
 720         /* Sleep for up to 1 second to wait for the LED to change. */
 721         msleep_interruptible(1000);
 722         remove_wait_queue(&ctrl->queue, &wait);
 723         if (signal_pending(current))
 724                 retval =  -EINTR;
 725
 726         dbg("%s - end\n", __func__);
 727         return retval;
 728 }
 729
 730 #include <asm/pci_x86.h>
 731 static inline int cpqhp_routing_table_length(void)
 732 {
 733         BUG_ON(cpqhp_routing_table == NULL);
 734         return ((cpqhp_routing_table->size - sizeof(struct irq_routing_table)) /
 735                 sizeof(struct irq_info));
 736 }
 737
 738 #endif