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1da177e4 LT |
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 | ||
45 | extern int shpchp_poll_mode; | |
46 | extern int shpchp_poll_time; | |
47 | extern 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 | ||
55 | struct 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 | |
78 | struct 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 | ||
99 | struct pci_resource { | |
100 | struct pci_resource * next; | |
101 | u32 base; | |
102 | u32 length; | |
103 | }; | |
104 | ||
105 | struct event_info { | |
106 | u32 event_type; | |
107 | u8 hp_slot; | |
108 | }; | |
109 | ||
110 | struct 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 | ||
142 | struct irq_mapping { | |
143 | u8 barber_pole; | |
144 | u8 valid_INT; | |
145 | u8 interrupt[4]; | |
146 | }; | |
147 | ||
148 | struct 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 */ | |
207 | extern void shpchp_create_ctrl_files (struct controller *ctrl); | |
208 | ||
209 | /* controller functions */ | |
210 | extern int shpchprm_find_available_resources(struct controller *ctrl); | |
211 | extern int shpchp_event_start_thread(void); | |
212 | extern void shpchp_event_stop_thread(void); | |
213 | extern struct pci_func *shpchp_slot_create(unsigned char busnumber); | |
214 | extern struct pci_func *shpchp_slot_find(unsigned char bus, unsigned char device, unsigned char index); | |
215 | extern int shpchp_enable_slot(struct slot *slot); | |
216 | extern int shpchp_disable_slot(struct slot *slot); | |
217 | ||
218 | extern u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id); | |
219 | extern u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id); | |
220 | extern u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id); | |
221 | extern u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id); | |
222 | ||
223 | /* resource functions */ | |
224 | extern int shpchp_resource_sort_and_combine(struct pci_resource **head); | |
225 | ||
226 | /* pci functions */ | |
227 | extern 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);*/ | |
229 | extern int shpchp_save_config(struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num); | |
230 | extern int shpchp_save_used_resources(struct controller *ctrl, struct pci_func * func, int flag); | |
231 | extern int shpchp_save_slot_config(struct controller *ctrl, struct pci_func * new_slot); | |
232 | extern void shpchp_destroy_board_resources(struct pci_func * func); | |
233 | extern int shpchp_return_board_resources(struct pci_func * func, struct resource_lists * resources); | |
234 | extern void shpchp_destroy_resource_list(struct resource_lists * resources); | |
235 | extern int shpchp_configure_device(struct controller* ctrl, struct pci_func* func); | |
236 | extern int shpchp_unconfigure_device(struct pci_func* func); | |
237 | ||
238 | ||
239 | /* Global variables */ | |
240 | extern struct controller *shpchp_ctrl_list; | |
241 | extern struct pci_func *shpchp_slot_list[256]; | |
242 | ||
243 | /* These are added to support AMD shpc */ | |
244 | extern u8 shpchp_nic_irq; | |
245 | extern u8 shpchp_disk_irq; | |
246 | ||
247 | struct 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 */ | |
275 | enum 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 | }; | |
301 | typedef u8(*php_intr_callback_t) (unsigned int change_id, void *instance_id); | |
302 | struct 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 */ | |
321 | static 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 | ||
338 | static 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 | ||
353 | static 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 | ||
377 | static 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 */ | |
402 | static 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 | ||
412 | static inline void make_slot_name(char *buffer, int buffer_size, struct slot *slot) | |
413 | { | |
414 | snprintf(buffer, buffer_size, "%d", slot->number); | |
415 | } | |
416 | ||
417 | enum php_ctlr_type { | |
418 | PCI, | |
419 | ISA, | |
420 | ACPI | |
421 | }; | |
422 | ||
423 | int 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 | ||
429 | int 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 | ||
436 | struct 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 */ |