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