2 * Compaq Hot Plug Controller Driver
4 * Copyright (C) 1995,2001 Compaq Computer Corporation
5 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
6 * Copyright (C) 2001 IBM
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.
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
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.
25 * Send feedback to <greg@kroah.com>
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() */
37 #define MY_NAME "cpqphp"
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)
46 struct smbios_system_slot {
53 u8 slot_current_usage;
58 } __attribute__ ((packed));
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),
75 struct smbios_generic {
79 } __attribute__ ((packed));
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),
88 struct smbios_entry_point {
101 u16 number_of_entrys;
103 } __attribute__ ((packed));
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),
122 struct ctrl_reg { /* offset */
123 u8 slot_RST; /* 0x00 */
124 u8 slot_enable; /* 0x01 */
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));
152 /* offsets to the controller registers based on the above structure layout */
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),
188 u8 number_of_entries;
192 } __attribute__ ((packed));
194 /* offsets to the hotplug resource table registers based on the above
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),
221 } __attribute__ ((packed));
223 /* offsets to the hotplug slot resource table registers based on the above
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),
240 struct pci_func *next;
249 u32 base_length[0x06];
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;
273 struct timer_list task_event;
275 struct controller *ctrl;
276 void __iomem *p_sm_slot;
277 struct hotplug_slot *hotplug_slot;
280 struct pci_resource {
281 struct pci_resource *next;
292 struct controller *next;
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];
307 u8 bus; /* bus number for the pci hotplug controller */
309 u8 slot_device_offset;
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 */
321 struct work_struct int_task_event;
322 wait_queue_head_t queue; /* sleep & wake process */
323 struct dentry *dentry; /* debugfs dentry */
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;
340 #define ROM_PHY_ADDR 0x0F0000
341 #define ROM_PHY_LEN 0x00ffff
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
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
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
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
378 #define PCI_TO_PCI_BRIDGE_CLASS 0x00060400
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
389 #define REMOVE_NOT_SUPPORTED 0x00000003
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"
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);
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);
426 /* resource functions */
427 int cpqhp_resource_sort_and_combine (struct pci_resource **head);
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,
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);
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;
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;
458 /* inline functions */
460 static inline const char *slot_name(struct slot *slot)
462 return hotplug_slot_name(slot->hotplug_slot);
468 * Puts node back in the resource list pointed to by head
470 static inline void return_resource(struct pci_resource **head,
471 struct pci_resource *node)
479 static inline void set_SOGO(struct controller *ctrl)
483 misc = readw(ctrl->hpc_reg + MISC);
484 misc = (misc | 0x0001) & 0xFFFB;
485 writew(misc, ctrl->hpc_reg + MISC);
489 static inline void amber_LED_on(struct controller *ctrl, u8 slot)
493 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
494 led_control |= (0x01010000L << slot);
495 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
499 static inline void amber_LED_off(struct controller *ctrl, u8 slot)
503 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
504 led_control &= ~(0x01010000L << slot);
505 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
509 static inline int read_amber_LED(struct controller *ctrl, u8 slot)
513 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
514 led_control &= (0x01010000L << slot);
516 return led_control ? 1 : 0;
520 static inline void green_LED_on(struct controller *ctrl, u8 slot)
524 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
525 led_control |= 0x0101L << slot;
526 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
529 static inline void green_LED_off(struct controller *ctrl, u8 slot)
533 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
534 led_control &= ~(0x0101L << slot);
535 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
539 static inline void green_LED_blink(struct controller *ctrl, u8 slot)
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);
550 static inline void slot_disable(struct controller *ctrl, u8 slot)
554 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
555 slot_enable &= ~(0x01 << slot);
556 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
560 static inline void slot_enable(struct controller *ctrl, u8 slot)
564 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
565 slot_enable |= (0x01 << slot);
566 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
570 static inline u8 is_slot_enabled(struct controller *ctrl, u8 slot)
574 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
575 slot_enable &= (0x01 << slot);
576 return slot_enable ? 1 : 0;
580 static inline u8 read_slot_enable(struct controller *ctrl)
582 return readb(ctrl->hpc_reg + SLOT_ENABLE);
587 * get_controller_speed - find the current frequency/mode of controller.
589 * @ctrl: controller to get frequency/mode for.
591 * Returns controller speed.
593 static inline u8 get_controller_speed(struct controller *ctrl)
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;
609 return PCI_SPEED_33MHz;
612 misc = readw(ctrl->hpc_reg + MISC);
613 return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
618 * get_adapter_speed - find the max supported frequency/mode of adapter.
620 * @ctrl: hotplug controller.
621 * @hp_slot: hotplug slot where adapter is installed.
623 * Returns adapter speed.
625 static inline u8 get_adapter_speed(struct controller *ctrl, u8 hp_slot)
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;
636 if (temp_dword & (0x01 << hp_slot))
637 return PCI_SPEED_66MHz;
639 return PCI_SPEED_33MHz;
642 static inline void enable_slot_power(struct controller *ctrl, u8 slot)
646 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
647 slot_power |= (0x01 << slot);
648 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER);
651 static inline void disable_slot_power(struct controller *ctrl, u8 slot)
655 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
656 slot_power &= ~(0x01 << slot);
657 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER);
661 static inline int cpq_get_attention_status(struct controller *ctrl, struct slot *slot)
665 hp_slot = slot->device - ctrl->slot_device_offset;
667 return read_amber_LED(ctrl, hp_slot);
671 static inline int get_slot_enabled(struct controller *ctrl, struct slot *slot)
675 hp_slot = slot->device - ctrl->slot_device_offset;
677 return is_slot_enabled(ctrl, hp_slot);
681 static inline int cpq_get_latch_status(struct controller *ctrl,
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);
691 status = (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot));
693 return (status == 0) ? 1 : 0;
697 static inline int get_presence_status(struct controller *ctrl,
700 int presence_save = 0;
704 hp_slot = slot->device - ctrl->slot_device_offset;
706 tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
707 presence_save = (int) ((((~tempdword) >> 23) | ((~tempdword) >> 15))
710 return presence_save;
713 static inline int wait_for_ctrl_irq(struct controller *ctrl)
715 DECLARE_WAITQUEUE(wait, current);
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))
726 dbg("%s - end\n", __func__);
730 #include <asm/pci_x86.h>
731 static inline int cpqhp_routing_table_length(void)
733 BUG_ON(cpqhp_routing_table == NULL);
734 return ((cpqhp_routing_table->size - sizeof(struct irq_routing_table)) /
735 sizeof(struct irq_info));