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 <linux/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