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path: root/drivers/pci/hotplug/shpchp.h
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Diffstat (limited to 'drivers/pci/hotplug/shpchp.h')
-rw-r--r--drivers/pci/hotplug/shpchp.h463
1 files changed, 463 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h
new file mode 100644
index 000000000000..67b6a3370ceb
--- /dev/null
+++ b/drivers/pci/hotplug/shpchp.h
@@ -0,0 +1,463 @@
1/*
2 * Standard 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 * Copyright (C) 2003-2004 Intel Corporation
8 *
9 * All rights reserved.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or (at
14 * your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
19 * NON INFRINGEMENT. See the GNU General Public License for more
20 * details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 * Send feedback to <greg@kroah.com>,<dely.l.sy@intel.com>
27 *
28 */
29#ifndef _SHPCHP_H
30#define _SHPCHP_H
31
32#include <linux/types.h>
33#include <linux/pci.h>
34#include <linux/delay.h>
35#include <asm/semaphore.h>
36#include <asm/io.h>
37#include "pci_hotplug.h"
38
39#if !defined(MODULE)
40 #define MY_NAME "shpchp"
41#else
42 #define MY_NAME THIS_MODULE->name
43#endif
44
45extern int shpchp_poll_mode;
46extern int shpchp_poll_time;
47extern int shpchp_debug;
48
49/*#define dbg(format, arg...) do { if (shpchp_debug) printk(KERN_DEBUG "%s: " format, MY_NAME , ## arg); } while (0)*/
50#define dbg(format, arg...) do { if (shpchp_debug) printk("%s: " format, MY_NAME , ## arg); } while (0)
51#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
52#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
53#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
54
55struct pci_func {
56 struct pci_func *next;
57 u8 bus;
58 u8 device;
59 u8 function;
60 u8 is_a_board;
61 u16 status;
62 u8 configured;
63 u8 switch_save;
64 u8 presence_save;
65 u8 pwr_save;
66 u32 base_length[0x06];
67 u8 base_type[0x06];
68 u16 reserved2;
69 u32 config_space[0x20];
70 struct pci_resource *mem_head;
71 struct pci_resource *p_mem_head;
72 struct pci_resource *io_head;
73 struct pci_resource *bus_head;
74 struct pci_dev* pci_dev;
75};
76
77#define SLOT_MAGIC 0x67267321
78struct slot {
79 u32 magic;
80 struct slot *next;
81 u8 bus;
82 u8 device;
83 u32 number;
84 u8 is_a_board;
85 u8 configured;
86 u8 state;
87 u8 switch_save;
88 u8 presence_save;
89 u32 capabilities;
90 u16 reserved2;
91 struct timer_list task_event;
92 u8 hp_slot;
93 struct controller *ctrl;
94 struct hpc_ops *hpc_ops;
95 struct hotplug_slot *hotplug_slot;
96 struct list_head slot_list;
97};
98
99struct pci_resource {
100 struct pci_resource * next;
101 u32 base;
102 u32 length;
103};
104
105struct event_info {
106 u32 event_type;
107 u8 hp_slot;
108};
109
110struct controller {
111 struct controller *next;
112 struct semaphore crit_sect; /* critical section semaphore */
113 void * hpc_ctlr_handle; /* HPC controller handle */
114 int num_slots; /* Number of slots on ctlr */
115 int slot_num_inc; /* 1 or -1 */
116 struct pci_resource *mem_head;
117 struct pci_resource *p_mem_head;
118 struct pci_resource *io_head;
119 struct pci_resource *bus_head;
120 struct pci_dev *pci_dev;
121 struct pci_bus *pci_bus;
122 struct event_info event_queue[10];
123 struct slot *slot;
124 struct hpc_ops *hpc_ops;
125 wait_queue_head_t queue; /* sleep & wake process */
126 u8 next_event;
127 u8 seg;
128 u8 bus;
129 u8 device;
130 u8 function;
131 u8 rev;
132 u8 slot_device_offset;
133 u8 add_support;
134 enum pci_bus_speed speed;
135 u32 first_slot; /* First physical slot number */
136 u8 slot_bus; /* Bus where the slots handled by this controller sit */
137 u8 push_flag;
138 u16 ctlrcap;
139 u16 vendor_id;
140};
141
142struct irq_mapping {
143 u8 barber_pole;
144 u8 valid_INT;
145 u8 interrupt[4];
146};
147
148struct resource_lists {
149 struct pci_resource *mem_head;
150 struct pci_resource *p_mem_head;
151 struct pci_resource *io_head;
152 struct pci_resource *bus_head;
153 struct irq_mapping *irqs;
154};
155
156/* Define AMD SHPC ID */
157#define PCI_DEVICE_ID_AMD_GOLAM_7450 0x7450
158
159#define INT_BUTTON_IGNORE 0
160#define INT_PRESENCE_ON 1
161#define INT_PRESENCE_OFF 2
162#define INT_SWITCH_CLOSE 3
163#define INT_SWITCH_OPEN 4
164#define INT_POWER_FAULT 5
165#define INT_POWER_FAULT_CLEAR 6
166#define INT_BUTTON_PRESS 7
167#define INT_BUTTON_RELEASE 8
168#define INT_BUTTON_CANCEL 9
169
170#define STATIC_STATE 0
171#define BLINKINGON_STATE 1
172#define BLINKINGOFF_STATE 2
173#define POWERON_STATE 3
174#define POWEROFF_STATE 4
175
176#define PCI_TO_PCI_BRIDGE_CLASS 0x00060400
177
178/* Error messages */
179#define INTERLOCK_OPEN 0x00000002
180#define ADD_NOT_SUPPORTED 0x00000003
181#define CARD_FUNCTIONING 0x00000005
182#define ADAPTER_NOT_SAME 0x00000006
183#define NO_ADAPTER_PRESENT 0x00000009
184#define NOT_ENOUGH_RESOURCES 0x0000000B
185#define DEVICE_TYPE_NOT_SUPPORTED 0x0000000C
186#define WRONG_BUS_FREQUENCY 0x0000000D
187#define POWER_FAILURE 0x0000000E
188
189#define REMOVE_NOT_SUPPORTED 0x00000003
190
191#define DISABLE_CARD 1
192
193/*
194 * error Messages
195 */
196#define msg_initialization_err "Initialization failure, error=%d\n"
197#define msg_HPC_rev_error "Unsupported revision of the PCI hot plug controller found.\n"
198#define msg_HPC_non_shpc "The PCI hot plug controller is not supported by this driver.\n"
199#define msg_HPC_not_supported "This system is not supported by this version of shpcphd mdoule. Upgrade to a newer version of shpchpd\n"
200#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"
201#define msg_button_on "PCI slot #%d - powering on due to button press.\n"
202#define msg_button_off "PCI slot #%d - powering off due to button press.\n"
203#define msg_button_cancel "PCI slot #%d - action canceled due to button press.\n"
204#define msg_button_ignore "PCI slot #%d - button press ignored. (action in progress...)\n"
205
206/* sysfs functions for the hotplug controller info */
207extern void shpchp_create_ctrl_files (struct controller *ctrl);
208
209/* controller functions */
210extern int shpchprm_find_available_resources(struct controller *ctrl);
211extern int shpchp_event_start_thread(void);
212extern void shpchp_event_stop_thread(void);
213extern struct pci_func *shpchp_slot_create(unsigned char busnumber);
214extern struct pci_func *shpchp_slot_find(unsigned char bus, unsigned char device, unsigned char index);
215extern int shpchp_enable_slot(struct slot *slot);
216extern int shpchp_disable_slot(struct slot *slot);
217
218extern u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id);
219extern u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id);
220extern u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id);
221extern u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id);
222
223/* resource functions */
224extern int shpchp_resource_sort_and_combine(struct pci_resource **head);
225
226/* pci functions */
227extern int shpchp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
228/*extern int shpchp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num, struct slot *slot);*/
229extern int shpchp_save_config(struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num);
230extern int shpchp_save_used_resources(struct controller *ctrl, struct pci_func * func, int flag);
231extern int shpchp_save_slot_config(struct controller *ctrl, struct pci_func * new_slot);
232extern void shpchp_destroy_board_resources(struct pci_func * func);
233extern int shpchp_return_board_resources(struct pci_func * func, struct resource_lists * resources);
234extern void shpchp_destroy_resource_list(struct resource_lists * resources);
235extern int shpchp_configure_device(struct controller* ctrl, struct pci_func* func);
236extern int shpchp_unconfigure_device(struct pci_func* func);
237
238
239/* Global variables */
240extern struct controller *shpchp_ctrl_list;
241extern struct pci_func *shpchp_slot_list[256];
242
243/* These are added to support AMD shpc */
244extern u8 shpchp_nic_irq;
245extern u8 shpchp_disk_irq;
246
247struct ctrl_reg {
248 volatile u32 base_offset;
249 volatile u32 slot_avail1;
250 volatile u32 slot_avail2;
251 volatile u32 slot_config;
252 volatile u16 sec_bus_config;
253 volatile u8 msi_ctrl;
254 volatile u8 prog_interface;
255 volatile u16 cmd;
256 volatile u16 cmd_status;
257 volatile u32 intr_loc;
258 volatile u32 serr_loc;
259 volatile u32 serr_intr_enable;
260 volatile u32 slot1;
261 volatile u32 slot2;
262 volatile u32 slot3;
263 volatile u32 slot4;
264 volatile u32 slot5;
265 volatile u32 slot6;
266 volatile u32 slot7;
267 volatile u32 slot8;
268 volatile u32 slot9;
269 volatile u32 slot10;
270 volatile u32 slot11;
271 volatile u32 slot12;
272} __attribute__ ((packed));
273
274/* offsets to the controller registers based on the above structure layout */
275enum ctrl_offsets {
276 BASE_OFFSET = offsetof(struct ctrl_reg, base_offset),
277 SLOT_AVAIL1 = offsetof(struct ctrl_reg, slot_avail1),
278 SLOT_AVAIL2 = offsetof(struct ctrl_reg, slot_avail2),
279 SLOT_CONFIG = offsetof(struct ctrl_reg, slot_config),
280 SEC_BUS_CONFIG = offsetof(struct ctrl_reg, sec_bus_config),
281 MSI_CTRL = offsetof(struct ctrl_reg, msi_ctrl),
282 PROG_INTERFACE = offsetof(struct ctrl_reg, prog_interface),
283 CMD = offsetof(struct ctrl_reg, cmd),
284 CMD_STATUS = offsetof(struct ctrl_reg, cmd_status),
285 INTR_LOC = offsetof(struct ctrl_reg, intr_loc),
286 SERR_LOC = offsetof(struct ctrl_reg, serr_loc),
287 SERR_INTR_ENABLE = offsetof(struct ctrl_reg, serr_intr_enable),
288 SLOT1 = offsetof(struct ctrl_reg, slot1),
289 SLOT2 = offsetof(struct ctrl_reg, slot2),
290 SLOT3 = offsetof(struct ctrl_reg, slot3),
291 SLOT4 = offsetof(struct ctrl_reg, slot4),
292 SLOT5 = offsetof(struct ctrl_reg, slot5),
293 SLOT6 = offsetof(struct ctrl_reg, slot6),
294 SLOT7 = offsetof(struct ctrl_reg, slot7),
295 SLOT8 = offsetof(struct ctrl_reg, slot8),
296 SLOT9 = offsetof(struct ctrl_reg, slot9),
297 SLOT10 = offsetof(struct ctrl_reg, slot10),
298 SLOT11 = offsetof(struct ctrl_reg, slot11),
299 SLOT12 = offsetof(struct ctrl_reg, slot12),
300};
301typedef u8(*php_intr_callback_t) (unsigned int change_id, void *instance_id);
302struct php_ctlr_state_s {
303 struct php_ctlr_state_s *pnext;
304 struct pci_dev *pci_dev;
305 unsigned int irq;
306 unsigned long flags; /* spinlock's */
307 u32 slot_device_offset;
308 u32 num_slots;
309 struct timer_list int_poll_timer; /* Added for poll event */
310 php_intr_callback_t attention_button_callback;
311 php_intr_callback_t switch_change_callback;
312 php_intr_callback_t presence_change_callback;
313 php_intr_callback_t power_fault_callback;
314 void *callback_instance_id;
315 void __iomem *creg; /* Ptr to controller register space */
316};
317/* Inline functions */
318
319
320/* Inline functions to check the sanity of a pointer that is passed to us */
321static inline int slot_paranoia_check (struct slot *slot, const char *function)
322{
323 if (!slot) {
324 dbg("%s - slot == NULL", function);
325 return -1;
326 }
327 if (slot->magic != SLOT_MAGIC) {
328 dbg("%s - bad magic number for slot", function);
329 return -1;
330 }
331 if (!slot->hotplug_slot) {
332 dbg("%s - slot->hotplug_slot == NULL!", function);
333 return -1;
334 }
335 return 0;
336}
337
338static inline struct slot *get_slot (struct hotplug_slot *hotplug_slot, const char *function)
339{
340 struct slot *slot;
341
342 if (!hotplug_slot) {
343 dbg("%s - hotplug_slot == NULL\n", function);
344 return NULL;
345 }
346
347 slot = (struct slot *)hotplug_slot->private;
348 if (slot_paranoia_check (slot, function))
349 return NULL;
350 return slot;
351}
352
353static inline struct slot *shpchp_find_slot (struct controller *ctrl, u8 device)
354{
355 struct slot *p_slot, *tmp_slot = NULL;
356
357 if (!ctrl)
358 return NULL;
359
360 p_slot = ctrl->slot;
361
362 dbg("p_slot = %p\n", p_slot);
363
364 while (p_slot && (p_slot->device != device)) {
365 tmp_slot = p_slot;
366 p_slot = p_slot->next;
367 dbg("In while loop, p_slot = %p\n", p_slot);
368 }
369 if (p_slot == NULL) {
370 err("ERROR: shpchp_find_slot device=0x%x\n", device);
371 p_slot = tmp_slot;
372 }
373
374 return (p_slot);
375}
376
377static inline int wait_for_ctrl_irq (struct controller *ctrl)
378{
379 DECLARE_WAITQUEUE(wait, current);
380 int retval = 0;
381
382 dbg("%s : start\n",__FUNCTION__);
383
384 add_wait_queue(&ctrl->queue, &wait);
385
386 if (!shpchp_poll_mode) {
387 /* Sleep for up to 1 second */
388 msleep_interruptible(1000);
389 } else {
390 /* Sleep for up to 2 seconds */
391 msleep_interruptible(2000);
392 }
393 remove_wait_queue(&ctrl->queue, &wait);
394 if (signal_pending(current))
395 retval = -EINTR;
396
397 dbg("%s : end\n", __FUNCTION__);
398 return retval;
399}
400
401/* Puts node back in the resource list pointed to by head */
402static inline void return_resource(struct pci_resource **head, struct pci_resource *node)
403{
404 if (!node || !head)
405 return;
406 node->next = *head;
407 *head = node;
408}
409
410#define SLOT_NAME_SIZE 10
411
412static inline void make_slot_name(char *buffer, int buffer_size, struct slot *slot)
413{
414 snprintf(buffer, buffer_size, "%d", slot->number);
415}
416
417enum php_ctlr_type {
418 PCI,
419 ISA,
420 ACPI
421};
422
423int shpc_init( struct controller *ctrl, struct pci_dev *pdev,
424 php_intr_callback_t attention_button_callback,
425 php_intr_callback_t switch_change_callback,
426 php_intr_callback_t presence_change_callback,
427 php_intr_callback_t power_fault_callback);
428
429int shpc_get_ctlr_slot_config( struct controller *ctrl,
430 int *num_ctlr_slots,
431 int *first_device_num,
432 int *physical_slot_num,
433 int *updown,
434 int *flags);
435
436struct hpc_ops {
437 int (*power_on_slot ) (struct slot *slot);
438 int (*slot_enable ) (struct slot *slot);
439 int (*slot_disable ) (struct slot *slot);
440 int (*enable_all_slots) (struct slot *slot);
441 int (*pwr_on_all_slots) (struct slot *slot);
442 int (*set_bus_speed_mode) (struct slot *slot, enum pci_bus_speed speed);
443 int (*get_power_status) (struct slot *slot, u8 *status);
444 int (*get_attention_status) (struct slot *slot, u8 *status);
445 int (*set_attention_status) (struct slot *slot, u8 status);
446 int (*get_latch_status) (struct slot *slot, u8 *status);
447 int (*get_adapter_status) (struct slot *slot, u8 *status);
448
449 int (*get_max_bus_speed) (struct slot *slot, enum pci_bus_speed *speed);
450 int (*get_cur_bus_speed) (struct slot *slot, enum pci_bus_speed *speed);
451 int (*get_adapter_speed) (struct slot *slot, enum pci_bus_speed *speed);
452 int (*get_mode1_ECC_cap) (struct slot *slot, u8 *mode);
453 int (*get_prog_int) (struct slot *slot, u8 *prog_int);
454
455 int (*query_power_fault) (struct slot *slot);
456 void (*green_led_on) (struct slot *slot);
457 void (*green_led_off) (struct slot *slot);
458 void (*green_led_blink) (struct slot *slot);
459 void (*release_ctlr) (struct controller *ctrl);
460 int (*check_cmd_status) (struct controller *ctrl);
461};
462
463#endif /* _SHPCHP_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 07:24:40 -0500