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MIPS: Yosemite, Emma: Fix off-by-two in arcs_cmdline buffer size check
[linux-2.6/linux-mips.git] / drivers / pci / hotplug / cpqphp.h
blobd8ffc73668013fe3356ca6b4ea3c35c99ad95c32
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 extern void cpqhp_initialize_debugfs(void);
408 extern void cpqhp_shutdown_debugfs(void);
409 extern void cpqhp_create_debugfs_files(struct controller *ctrl);
410 extern void cpqhp_remove_debugfs_files(struct controller *ctrl);
411
412 /* controller functions */
413 extern void cpqhp_pushbutton_thread(unsigned long event_pointer);
414 extern irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data);
415 extern int cpqhp_find_available_resources(struct controller *ctrl,
416 void __iomem *rom_start);
417 extern int cpqhp_event_start_thread(void);
418 extern void cpqhp_event_stop_thread(void);
419 extern struct pci_func *cpqhp_slot_create(unsigned char busnumber);
420 extern struct pci_func *cpqhp_slot_find(unsigned char bus, unsigned char device,
421 unsigned char index);
422 extern int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func);
423 extern int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func);
424 extern int cpqhp_hardware_test(struct controller *ctrl, int test_num);
425
426 /* resource functions */
427 extern int cpqhp_resource_sort_and_combine (struct pci_resource **head);
428
429 /* pci functions */
430 extern int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
431 extern int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num,
432 u8 slot);
433 extern int cpqhp_save_config(struct controller *ctrl, int busnumber,
434 int is_hot_plug);
435 extern int cpqhp_save_base_addr_length(struct controller *ctrl,
436 struct pci_func *func);
437 extern int cpqhp_save_used_resources(struct controller *ctrl,
438 struct pci_func *func);
439 extern int cpqhp_configure_board(struct controller *ctrl,
440 struct pci_func *func);
441 extern int cpqhp_save_slot_config(struct controller *ctrl,
442 struct pci_func *new_slot);
443 extern int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func);
444 extern void cpqhp_destroy_board_resources(struct pci_func *func);
445 extern int cpqhp_return_board_resources (struct pci_func *func,
446 struct resource_lists *resources);
447 extern void cpqhp_destroy_resource_list(struct resource_lists *resources);
448 extern int cpqhp_configure_device(struct controller *ctrl,
449 struct pci_func *func);
450 extern int cpqhp_unconfigure_device(struct pci_func *func);
451
452 /* Global variables */
453 extern int cpqhp_debug;
454 extern int cpqhp_legacy_mode;
455 extern struct controller *cpqhp_ctrl_list;
456 extern struct pci_func *cpqhp_slot_list[256];
457 extern struct irq_routing_table *cpqhp_routing_table;
458
459 /* these can be gotten rid of, but for debugging they are purty */
460 extern u8 cpqhp_nic_irq;
461 extern u8 cpqhp_disk_irq;
462
463
464 /* inline functions */
465
466 static inline const char *slot_name(struct slot *slot)
467 {
468 return hotplug_slot_name(slot->hotplug_slot);
469 }
470
471 /*
472 * return_resource
473 *
474 * Puts node back in the resource list pointed to by head
475 */
476 static inline void return_resource(struct pci_resource **head,
477 struct pci_resource *node)
478 {
479 if (!node || !head)
480 return;
481 node->next = *head;
482 *head = node;
483 }
484
485 static inline void set_SOGO(struct controller *ctrl)
486 {
487 u16 misc;
488
489 misc = readw(ctrl->hpc_reg + MISC);
490 misc = (misc | 0x0001) & 0xFFFB;
491 writew(misc, ctrl->hpc_reg + MISC);
492 }
493
494
495 static inline void amber_LED_on(struct controller *ctrl, u8 slot)
496 {
497 u32 led_control;
498
499 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
500 led_control |= (0x01010000L << slot);
501 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
502 }
503
504
505 static inline void amber_LED_off(struct controller *ctrl, u8 slot)
506 {
507 u32 led_control;
508
509 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
510 led_control &= ~(0x01010000L << slot);
511 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
512 }
513
514
515 static inline int read_amber_LED(struct controller *ctrl, u8 slot)
516 {
517 u32 led_control;
518
519 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
520 led_control &= (0x01010000L << slot);
521
522 return led_control ? 1 : 0;
523 }
524
525
526 static inline void green_LED_on(struct controller *ctrl, u8 slot)
527 {
528 u32 led_control;
529
530 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
531 led_control |= 0x0101L << slot;
532 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
533 }
534
535 static inline void green_LED_off(struct controller *ctrl, u8 slot)
536 {
537 u32 led_control;
538
539 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
540 led_control &= ~(0x0101L << slot);
541 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
542 }
543
544
545 static inline void green_LED_blink(struct controller *ctrl, u8 slot)
546 {
547 u32 led_control;
548
549 led_control = readl(ctrl->hpc_reg + LED_CONTROL);
550 led_control &= ~(0x0101L << slot);
551 led_control |= (0x0001L << slot);
552 writel(led_control, ctrl->hpc_reg + LED_CONTROL);
553 }
554
555
556 static inline void slot_disable(struct controller *ctrl, u8 slot)
557 {
558 u8 slot_enable;
559
560 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
561 slot_enable &= ~(0x01 << slot);
562 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
563 }
564
565
566 static inline void slot_enable(struct controller *ctrl, u8 slot)
567 {
568 u8 slot_enable;
569
570 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
571 slot_enable |= (0x01 << slot);
572 writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
573 }
574
575
576 static inline u8 is_slot_enabled(struct controller *ctrl, u8 slot)
577 {
578 u8 slot_enable;
579
580 slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
581 slot_enable &= (0x01 << slot);
582 return slot_enable ? 1 : 0;
583 }
584
585
586 static inline u8 read_slot_enable(struct controller *ctrl)
587 {
588 return readb(ctrl->hpc_reg + SLOT_ENABLE);
589 }
590
591
592 /**
593 * get_controller_speed - find the current frequency/mode of controller.
594 *
595 * @ctrl: controller to get frequency/mode for.
596 *
597 * Returns controller speed.
598 */
599 static inline u8 get_controller_speed(struct controller *ctrl)
600 {
601 u8 curr_freq;
602 u16 misc;
603
604 if (ctrl->pcix_support) {
605 curr_freq = readb(ctrl->hpc_reg + NEXT_CURR_FREQ);
606 if ((curr_freq & 0xB0) == 0xB0)
607 return PCI_SPEED_133MHz_PCIX;
608 if ((curr_freq & 0xA0) == 0xA0)
609 return PCI_SPEED_100MHz_PCIX;
610 if ((curr_freq & 0x90) == 0x90)
611 return PCI_SPEED_66MHz_PCIX;
612 if (curr_freq & 0x10)
613 return PCI_SPEED_66MHz;
614
615 return PCI_SPEED_33MHz;
616 }
617
618 misc = readw(ctrl->hpc_reg + MISC);
619 return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
620 }
621
622
623 /**
624 * get_adapter_speed - find the max supported frequency/mode of adapter.
625 *
626 * @ctrl: hotplug controller.
627 * @hp_slot: hotplug slot where adapter is installed.
628 *
629 * Returns adapter speed.
630 */
631 static inline u8 get_adapter_speed(struct controller *ctrl, u8 hp_slot)
632 {
633 u32 temp_dword = readl(ctrl->hpc_reg + NON_INT_INPUT);
634 dbg("slot: %d, PCIXCAP: %8x\n", hp_slot, temp_dword);
635 if (ctrl->pcix_support) {
636 if (temp_dword & (0x10000 << hp_slot))
637 return PCI_SPEED_133MHz_PCIX;
638 if (temp_dword & (0x100 << hp_slot))
639 return PCI_SPEED_66MHz_PCIX;
640 }
641
642 if (temp_dword & (0x01 << hp_slot))
643 return PCI_SPEED_66MHz;
644
645 return PCI_SPEED_33MHz;
646 }
647
648 static inline void enable_slot_power(struct controller *ctrl, u8 slot)
649 {
650 u8 slot_power;
651
652 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
653 slot_power |= (0x01 << slot);
654 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER);
655 }
656
657 static inline void disable_slot_power(struct controller *ctrl, u8 slot)
658 {
659 u8 slot_power;
660
661 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
662 slot_power &= ~(0x01 << slot);
663 writeb(slot_power, ctrl->hpc_reg + SLOT_POWER);
664 }
665
666
667 static inline int cpq_get_attention_status(struct controller *ctrl, struct slot *slot)
668 {
669 u8 hp_slot;
670
671 hp_slot = slot->device - ctrl->slot_device_offset;
672
673 return read_amber_LED(ctrl, hp_slot);
674 }
675
676
677 static inline int get_slot_enabled(struct controller *ctrl, struct slot *slot)
678 {
679 u8 hp_slot;
680
681 hp_slot = slot->device - ctrl->slot_device_offset;
682
683 return is_slot_enabled(ctrl, hp_slot);
684 }
685
686
687 static inline int cpq_get_latch_status(struct controller *ctrl,
688 struct slot *slot)
689 {
690 u32 status;
691 u8 hp_slot;
692
693 hp_slot = slot->device - ctrl->slot_device_offset;
694 dbg("%s: slot->device = %d, ctrl->slot_device_offset = %d \n",
695 __func__, slot->device, ctrl->slot_device_offset);
696
697 status = (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot));
698
699 return(status == 0) ? 1 : 0;
700 }
701
702
703 static inline int get_presence_status(struct controller *ctrl,
704 struct slot *slot)
705 {
706 int presence_save = 0;
707 u8 hp_slot;
708 u32 tempdword;
709
710 hp_slot = slot->device - ctrl->slot_device_offset;
711
712 tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
713 presence_save = (int) ((((~tempdword) >> 23) | ((~tempdword) >> 15))
714 >> hp_slot) & 0x02;
715
716 return presence_save;
717 }
718
719 static inline int wait_for_ctrl_irq(struct controller *ctrl)
720 {
721 DECLARE_WAITQUEUE(wait, current);
722 int retval = 0;
723
724 dbg("%s - start\n", __func__);
725 add_wait_queue(&ctrl->queue, &wait);
726 /* Sleep for up to 1 second to wait for the LED to change. */
727 msleep_interruptible(1000);
728 remove_wait_queue(&ctrl->queue, &wait);
729 if (signal_pending(current))
730 retval = -EINTR;
731
732 dbg("%s - end\n", __func__);
733 return retval;
734 }
735
736 #include <asm/pci_x86.h>
737 static inline int cpqhp_routing_table_length(void)
738 {
739 BUG_ON(cpqhp_routing_table == NULL);
740 return ((cpqhp_routing_table->size - sizeof(struct irq_routing_table)) /
741 sizeof(struct irq_info));
742 }
743
744 #endif
Mirror of the linux-mips.org kernel tree