Commit | Line | Data |
---|---|---|
736759ef | 1 | // SPDX-License-Identifier: GPL-2.0+ |
1da177e4 LT |
2 | /* |
3 | * Standard 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 Corp. | |
8 | * Copyright (C) 2003-2004 Intel Corporation | |
9 | * | |
10 | * All rights reserved. | |
11 | * | |
8cf4c195 | 12 | * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> |
1da177e4 LT |
13 | * |
14 | */ | |
15 | ||
1da177e4 LT |
16 | #include <linux/module.h> |
17 | #include <linux/kernel.h> | |
18 | #include <linux/types.h> | |
5a0e3ad6 | 19 | #include <linux/slab.h> |
1da177e4 | 20 | #include <linux/pci.h> |
dbd7a788 | 21 | #include "../pci.h" |
1da177e4 | 22 | #include "shpchp.h" |
1da177e4 | 23 | |
c4028958 | 24 | static void interrupt_event_handler(struct work_struct *work); |
a246fa4e KK |
25 | static int shpchp_enable_slot(struct slot *p_slot); |
26 | static int shpchp_disable_slot(struct slot *p_slot); | |
1da177e4 | 27 | |
f7391f53 KK |
28 | static int queue_interrupt_event(struct slot *p_slot, u32 event_type) |
29 | { | |
30 | struct event_info *info; | |
31 | ||
32 | info = kmalloc(sizeof(*info), GFP_ATOMIC); | |
33 | if (!info) | |
34 | return -ENOMEM; | |
35 | ||
36 | info->event_type = event_type; | |
37 | info->p_slot = p_slot; | |
c4028958 | 38 | INIT_WORK(&info->work, interrupt_event_handler); |
f7391f53 | 39 | |
f652e7d2 | 40 | queue_work(p_slot->wq, &info->work); |
f7391f53 KK |
41 | |
42 | return 0; | |
43 | } | |
1da177e4 | 44 | |
0abe68ce | 45 | u8 shpchp_handle_attention_button(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 46 | { |
1da177e4 | 47 | struct slot *p_slot; |
f7391f53 | 48 | u32 event_type; |
1da177e4 LT |
49 | |
50 | /* Attention Button Change */ | |
be7bce25 | 51 | ctrl_dbg(ctrl, "Attention button interrupt received\n"); |
9f593e30 | 52 | |
1da177e4 | 53 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 54 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 LT |
55 | |
56 | /* | |
57 | * Button pressed - See if need to TAKE ACTION!!! | |
58 | */ | |
f98ca311 | 59 | ctrl_info(ctrl, "Button pressed on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 60 | event_type = INT_BUTTON_PRESS; |
1da177e4 | 61 | |
f7391f53 | 62 | queue_interrupt_event(p_slot, event_type); |
1da177e4 LT |
63 | |
64 | return 0; | |
65 | ||
66 | } | |
67 | ||
0abe68ce | 68 | u8 shpchp_handle_switch_change(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 69 | { |
1da177e4 | 70 | struct slot *p_slot; |
1da177e4 | 71 | u8 getstatus; |
f7391f53 | 72 | u32 event_type; |
1da177e4 LT |
73 | |
74 | /* Switch Change */ | |
be7bce25 | 75 | ctrl_dbg(ctrl, "Switch interrupt received\n"); |
1da177e4 | 76 | |
1da177e4 | 77 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
2178bfad | 78 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
1da177e4 | 79 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
be7bce25 TI |
80 | ctrl_dbg(ctrl, "Card present %x Power status %x\n", |
81 | p_slot->presence_save, p_slot->pwr_save); | |
1da177e4 LT |
82 | |
83 | if (getstatus) { | |
84 | /* | |
85 | * Switch opened | |
86 | */ | |
f98ca311 | 87 | ctrl_info(ctrl, "Latch open on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 88 | event_type = INT_SWITCH_OPEN; |
2178bfad | 89 | if (p_slot->pwr_save && p_slot->presence_save) { |
f7391f53 | 90 | event_type = INT_POWER_FAULT; |
f98ca311 | 91 | ctrl_err(ctrl, "Surprise Removal of card\n"); |
1da177e4 LT |
92 | } |
93 | } else { | |
94 | /* | |
95 | * Switch closed | |
96 | */ | |
f98ca311 | 97 | ctrl_info(ctrl, "Latch close on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 98 | event_type = INT_SWITCH_CLOSE; |
1da177e4 LT |
99 | } |
100 | ||
f7391f53 | 101 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 102 | |
f7391f53 | 103 | return 1; |
1da177e4 LT |
104 | } |
105 | ||
0abe68ce | 106 | u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 107 | { |
1da177e4 | 108 | struct slot *p_slot; |
f7391f53 | 109 | u32 event_type; |
1da177e4 LT |
110 | |
111 | /* Presence Change */ | |
be7bce25 | 112 | ctrl_dbg(ctrl, "Presence/Notify input change\n"); |
1da177e4 | 113 | |
1da177e4 LT |
114 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
115 | ||
9f593e30 | 116 | /* |
1da177e4 LT |
117 | * Save the presence state |
118 | */ | |
2178bfad | 119 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
120 | if (p_slot->presence_save) { | |
1da177e4 LT |
121 | /* |
122 | * Card Present | |
123 | */ | |
f98ca311 TI |
124 | ctrl_info(ctrl, "Card present on Slot(%s)\n", |
125 | slot_name(p_slot)); | |
f7391f53 | 126 | event_type = INT_PRESENCE_ON; |
1da177e4 LT |
127 | } else { |
128 | /* | |
129 | * Not Present | |
130 | */ | |
f98ca311 TI |
131 | ctrl_info(ctrl, "Card not present on Slot(%s)\n", |
132 | slot_name(p_slot)); | |
f7391f53 | 133 | event_type = INT_PRESENCE_OFF; |
1da177e4 LT |
134 | } |
135 | ||
f7391f53 | 136 | queue_interrupt_event(p_slot, event_type); |
1da177e4 | 137 | |
f7391f53 | 138 | return 1; |
1da177e4 LT |
139 | } |
140 | ||
0abe68ce | 141 | u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl) |
1da177e4 | 142 | { |
1da177e4 | 143 | struct slot *p_slot; |
f7391f53 | 144 | u32 event_type; |
1da177e4 LT |
145 | |
146 | /* Power fault */ | |
be7bce25 | 147 | ctrl_dbg(ctrl, "Power fault interrupt received\n"); |
1da177e4 | 148 | |
1da177e4 LT |
149 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
150 | ||
3c78bc61 | 151 | if (!(p_slot->hpc_ops->query_power_fault(p_slot))) { |
1da177e4 LT |
152 | /* |
153 | * Power fault Cleared | |
154 | */ | |
f98ca311 TI |
155 | ctrl_info(ctrl, "Power fault cleared on Slot(%s)\n", |
156 | slot_name(p_slot)); | |
2178bfad | 157 | p_slot->status = 0x00; |
f7391f53 | 158 | event_type = INT_POWER_FAULT_CLEAR; |
1da177e4 LT |
159 | } else { |
160 | /* | |
161 | * Power fault | |
162 | */ | |
f98ca311 | 163 | ctrl_info(ctrl, "Power fault on Slot(%s)\n", slot_name(p_slot)); |
f7391f53 | 164 | event_type = INT_POWER_FAULT; |
1da177e4 | 165 | /* set power fault status for this board */ |
2178bfad | 166 | p_slot->status = 0xFF; |
be7bce25 | 167 | ctrl_info(ctrl, "Power fault bit %x set\n", hp_slot); |
1da177e4 | 168 | } |
1da177e4 | 169 | |
f7391f53 KK |
170 | queue_interrupt_event(p_slot, event_type); |
171 | ||
172 | return 1; | |
1da177e4 LT |
173 | } |
174 | ||
9f593e30 | 175 | /* The following routines constitute the bulk of the |
1da177e4 LT |
176 | hotplug controller logic |
177 | */ | |
ee138334 | 178 | static int change_bus_speed(struct controller *ctrl, struct slot *p_slot, |
179 | enum pci_bus_speed speed) | |
9f593e30 | 180 | { |
ee138334 | 181 | int rc = 0; |
1da177e4 | 182 | |
be7bce25 | 183 | ctrl_dbg(ctrl, "Change speed to %d\n", speed); |
79e50e72 QL |
184 | rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed); |
185 | if (rc) { | |
227f0647 RD |
186 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command failed\n", |
187 | __func__); | |
1da177e4 LT |
188 | return WRONG_BUS_FREQUENCY; |
189 | } | |
1da177e4 LT |
190 | return rc; |
191 | } | |
192 | ||
ee138334 | 193 | static int fix_bus_speed(struct controller *ctrl, struct slot *pslot, |
194 | u8 flag, enum pci_bus_speed asp, enum pci_bus_speed bsp, | |
195 | enum pci_bus_speed msp) | |
9f593e30 | 196 | { |
ee138334 | 197 | int rc = 0; |
0afabe90 KK |
198 | |
199 | /* | |
200 | * If other slots on the same bus are occupied, we cannot | |
201 | * change the bus speed. | |
202 | */ | |
203 | if (flag) { | |
204 | if (asp < bsp) { | |
227f0647 RD |
205 | ctrl_err(ctrl, "Speed of bus %x and adapter %x mismatch\n", |
206 | bsp, asp); | |
0afabe90 | 207 | rc = WRONG_BUS_FREQUENCY; |
1da177e4 | 208 | } |
0afabe90 KK |
209 | return rc; |
210 | } | |
211 | ||
212 | if (asp < msp) { | |
213 | if (bsp != asp) | |
214 | rc = change_bus_speed(ctrl, pslot, asp); | |
1da177e4 | 215 | } else { |
0afabe90 KK |
216 | if (bsp != msp) |
217 | rc = change_bus_speed(ctrl, pslot, msp); | |
1da177e4 LT |
218 | } |
219 | return rc; | |
220 | } | |
221 | ||
222 | /** | |
223 | * board_added - Called after a board has been added to the system. | |
26e6c66e | 224 | * @p_slot: target &slot |
1da177e4 | 225 | * |
26e6c66e RD |
226 | * Turns power on for the board. |
227 | * Configures board. | |
1da177e4 | 228 | */ |
ee138334 | 229 | static int board_added(struct slot *p_slot) |
1da177e4 LT |
230 | { |
231 | u8 hp_slot; | |
232 | u8 slots_not_empty = 0; | |
ee138334 | 233 | int rc = 0; |
0afabe90 | 234 | enum pci_bus_speed asp, bsp, msp; |
2178bfad | 235 | struct controller *ctrl = p_slot->ctrl; |
be7bce25 | 236 | struct pci_bus *parent = ctrl->pci_dev->subordinate; |
1da177e4 | 237 | |
2178bfad | 238 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 | 239 | |
227f0647 | 240 | ctrl_dbg(ctrl, "%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", |
f98ca311 | 241 | __func__, p_slot->device, ctrl->slot_device_offset, hp_slot); |
1da177e4 | 242 | |
1da177e4 LT |
243 | /* Power on slot without connecting to bus */ |
244 | rc = p_slot->hpc_ops->power_on_slot(p_slot); | |
245 | if (rc) { | |
be7bce25 | 246 | ctrl_err(ctrl, "Failed to power on slot\n"); |
1da177e4 LT |
247 | return -1; |
248 | } | |
9f593e30 | 249 | |
1da177e4 | 250 | if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { |
79e50e72 QL |
251 | rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz); |
252 | if (rc) { | |
227f0647 RD |
253 | ctrl_err(ctrl, "%s: Issue of set bus speed mode command failed\n", |
254 | __func__); | |
1da177e4 LT |
255 | return WRONG_BUS_FREQUENCY; |
256 | } | |
9f593e30 | 257 | |
1da177e4 | 258 | /* turn on board, blink green LED, turn off Amber LED */ |
79e50e72 QL |
259 | rc = p_slot->hpc_ops->slot_enable(p_slot); |
260 | if (rc) { | |
be7bce25 | 261 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
262 | return rc; |
263 | } | |
1da177e4 | 264 | } |
9f593e30 | 265 | |
0afabe90 KK |
266 | rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp); |
267 | if (rc) { | |
227f0647 | 268 | ctrl_err(ctrl, "Can't get adapter speed or bus mode mismatch\n"); |
1da177e4 LT |
269 | return WRONG_BUS_FREQUENCY; |
270 | } | |
271 | ||
93fa9d32 MA |
272 | bsp = ctrl->pci_dev->subordinate->cur_bus_speed; |
273 | msp = ctrl->pci_dev->subordinate->max_bus_speed; | |
1da177e4 LT |
274 | |
275 | /* Check if there are other slots or devices on the same bus */ | |
276 | if (!list_empty(&ctrl->pci_dev->subordinate->devices)) | |
277 | slots_not_empty = 1; | |
278 | ||
227f0647 RD |
279 | ctrl_dbg(ctrl, "%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, max_bus_speed %d\n", |
280 | __func__, slots_not_empty, asp, | |
f98ca311 | 281 | bsp, msp); |
1da177e4 | 282 | |
0afabe90 KK |
283 | rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp); |
284 | if (rc) | |
285 | return rc; | |
1da177e4 | 286 | |
1da177e4 | 287 | /* turn on board, blink green LED, turn off Amber LED */ |
79e50e72 QL |
288 | rc = p_slot->hpc_ops->slot_enable(p_slot); |
289 | if (rc) { | |
be7bce25 | 290 | ctrl_err(ctrl, "Issue of Slot Enable command failed\n"); |
1da177e4 LT |
291 | return rc; |
292 | } | |
1da177e4 | 293 | |
1da177e4 | 294 | /* Wait for ~1 second */ |
68c0b671 | 295 | msleep(1000); |
1da177e4 | 296 | |
f98ca311 | 297 | ctrl_dbg(ctrl, "%s: slot status = %x\n", __func__, p_slot->status); |
1da177e4 | 298 | /* Check for a power fault */ |
2178bfad | 299 | if (p_slot->status == 0xFF) { |
1da177e4 | 300 | /* power fault occurred, but it was benign */ |
be7bce25 | 301 | ctrl_dbg(ctrl, "%s: Power fault\n", __func__); |
1da177e4 | 302 | rc = POWER_FAILURE; |
2178bfad | 303 | p_slot->status = 0; |
dbd7a788 | 304 | goto err_exit; |
1da177e4 LT |
305 | } |
306 | ||
dbd7a788 | 307 | if (shpchp_configure_device(p_slot)) { |
be7bce25 TI |
308 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n", |
309 | pci_domain_nr(parent), p_slot->bus, p_slot->device); | |
dbd7a788 | 310 | goto err_exit; |
311 | } | |
1da177e4 | 312 | |
2178bfad | 313 | p_slot->status = 0; |
314 | p_slot->is_a_board = 0x01; | |
315 | p_slot->pwr_save = 1; | |
1da177e4 | 316 | |
dbd7a788 | 317 | p_slot->hpc_ops->green_led_on(p_slot); |
1da177e4 | 318 | |
dbd7a788 | 319 | return 0; |
1da177e4 | 320 | |
dbd7a788 | 321 | err_exit: |
dbd7a788 | 322 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
323 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
324 | if (rc) { | |
f98ca311 TI |
325 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
326 | __func__); | |
dbd7a788 | 327 | return rc; |
328 | } | |
1da177e4 | 329 | |
dbd7a788 | 330 | return(rc); |
1da177e4 LT |
331 | } |
332 | ||
333 | ||
334 | /** | |
26e6c66e RD |
335 | * remove_board - Turns off slot and LEDs |
336 | * @p_slot: target &slot | |
1da177e4 | 337 | */ |
ee138334 | 338 | static int remove_board(struct slot *p_slot) |
1da177e4 | 339 | { |
2178bfad | 340 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 341 | u8 hp_slot; |
ee138334 | 342 | int rc; |
70b60919 | 343 | |
cfbd83d0 | 344 | shpchp_unconfigure_device(p_slot); |
1da177e4 | 345 | |
2178bfad | 346 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
1da177e4 LT |
347 | p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
348 | ||
be7bce25 | 349 | ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, hp_slot); |
1da177e4 | 350 | |
1da177e4 | 351 | /* Change status to shutdown */ |
2178bfad | 352 | if (p_slot->is_a_board) |
353 | p_slot->status = 0x01; | |
1da177e4 | 354 | |
1da177e4 LT |
355 | /* turn off slot, turn on Amber LED, turn off Green LED */ |
356 | rc = p_slot->hpc_ops->slot_disable(p_slot); | |
357 | if (rc) { | |
f98ca311 TI |
358 | ctrl_err(ctrl, "%s: Issue of Slot Disable command failed\n", |
359 | __func__); | |
1da177e4 LT |
360 | return rc; |
361 | } | |
9f593e30 | 362 | |
1da177e4 LT |
363 | rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); |
364 | if (rc) { | |
be7bce25 | 365 | ctrl_err(ctrl, "Issue of Set Attention command failed\n"); |
1da177e4 LT |
366 | return rc; |
367 | } | |
1da177e4 | 368 | |
2178bfad | 369 | p_slot->pwr_save = 0; |
370 | p_slot->is_a_board = 0; | |
1da177e4 LT |
371 | |
372 | return 0; | |
373 | } | |
374 | ||
375 | ||
a246fa4e KK |
376 | struct pushbutton_work_info { |
377 | struct slot *p_slot; | |
378 | struct work_struct work; | |
379 | }; | |
380 | ||
1da177e4 | 381 | /** |
26e6c66e RD |
382 | * shpchp_pushbutton_thread - handle pushbutton events |
383 | * @work: &struct work_struct to be handled | |
1da177e4 | 384 | * |
26e6c66e | 385 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
1da177e4 | 386 | * Handles all pending events and exits. |
1da177e4 | 387 | */ |
c4028958 | 388 | static void shpchp_pushbutton_thread(struct work_struct *work) |
1da177e4 | 389 | { |
c4028958 DH |
390 | struct pushbutton_work_info *info = |
391 | container_of(work, struct pushbutton_work_info, work); | |
a246fa4e | 392 | struct slot *p_slot = info->p_slot; |
1da177e4 | 393 | |
a246fa4e KK |
394 | mutex_lock(&p_slot->lock); |
395 | switch (p_slot->state) { | |
396 | case POWEROFF_STATE: | |
397 | mutex_unlock(&p_slot->lock); | |
1da177e4 | 398 | shpchp_disable_slot(p_slot); |
a246fa4e | 399 | mutex_lock(&p_slot->lock); |
1da177e4 | 400 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
401 | break; |
402 | case POWERON_STATE: | |
403 | mutex_unlock(&p_slot->lock); | |
d29aadda | 404 | if (shpchp_enable_slot(p_slot)) |
1da177e4 | 405 | p_slot->hpc_ops->green_led_off(p_slot); |
a246fa4e | 406 | mutex_lock(&p_slot->lock); |
1da177e4 | 407 | p_slot->state = STATIC_STATE; |
a246fa4e KK |
408 | break; |
409 | default: | |
410 | break; | |
411 | } | |
412 | mutex_unlock(&p_slot->lock); | |
413 | ||
414 | kfree(info); | |
415 | } | |
416 | ||
e325e1f0 | 417 | void shpchp_queue_pushbutton_work(struct work_struct *work) |
a246fa4e | 418 | { |
c4028958 | 419 | struct slot *p_slot = container_of(work, struct slot, work.work); |
a246fa4e KK |
420 | struct pushbutton_work_info *info; |
421 | ||
422 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
423 | if (!info) { | |
f98ca311 TI |
424 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
425 | __func__); | |
a246fa4e KK |
426 | return; |
427 | } | |
428 | info->p_slot = p_slot; | |
c4028958 | 429 | INIT_WORK(&info->work, shpchp_pushbutton_thread); |
a246fa4e KK |
430 | |
431 | mutex_lock(&p_slot->lock); | |
432 | switch (p_slot->state) { | |
433 | case BLINKINGOFF_STATE: | |
434 | p_slot->state = POWEROFF_STATE; | |
435 | break; | |
436 | case BLINKINGON_STATE: | |
437 | p_slot->state = POWERON_STATE; | |
438 | break; | |
439 | default: | |
6fcaf17a | 440 | kfree(info); |
a246fa4e | 441 | goto out; |
1da177e4 | 442 | } |
f652e7d2 | 443 | queue_work(p_slot->wq, &info->work); |
a246fa4e KK |
444 | out: |
445 | mutex_unlock(&p_slot->lock); | |
1da177e4 LT |
446 | } |
447 | ||
a7da2161 | 448 | static void update_slot_info(struct slot *slot) |
1da177e4 | 449 | { |
a7da2161 LW |
450 | slot->hpc_ops->get_power_status(slot, &slot->pwr_save); |
451 | slot->hpc_ops->get_attention_status(slot, &slot->attention_save); | |
452 | slot->hpc_ops->get_latch_status(slot, &slot->latch_save); | |
453 | slot->hpc_ops->get_adapter_status(slot, &slot->presence_save); | |
1da177e4 LT |
454 | } |
455 | ||
a246fa4e KK |
456 | /* |
457 | * Note: This function must be called with slot->lock held | |
458 | */ | |
459 | static void handle_button_press_event(struct slot *p_slot) | |
1da177e4 | 460 | { |
1da177e4 | 461 | u8 getstatus; |
f98ca311 | 462 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 | 463 | |
a246fa4e KK |
464 | switch (p_slot->state) { |
465 | case STATIC_STATE: | |
f7391f53 KK |
466 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
467 | if (getstatus) { | |
468 | p_slot->state = BLINKINGOFF_STATE; | |
227f0647 RD |
469 | ctrl_info(ctrl, "PCI slot #%s - powering off due to button press\n", |
470 | slot_name(p_slot)); | |
f7391f53 KK |
471 | } else { |
472 | p_slot->state = BLINKINGON_STATE; | |
227f0647 RD |
473 | ctrl_info(ctrl, "PCI slot #%s - powering on due to button press\n", |
474 | slot_name(p_slot)); | |
f7391f53 KK |
475 | } |
476 | /* blink green LED and turn off amber */ | |
477 | p_slot->hpc_ops->green_led_blink(p_slot); | |
478 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
1da177e4 | 479 | |
f652e7d2 | 480 | queue_delayed_work(p_slot->wq, &p_slot->work, 5*HZ); |
a246fa4e KK |
481 | break; |
482 | case BLINKINGOFF_STATE: | |
483 | case BLINKINGON_STATE: | |
484 | /* | |
485 | * Cancel if we are still blinking; this means that we | |
486 | * press the attention again before the 5 sec. limit | |
487 | * expires to cancel hot-add or hot-remove | |
488 | */ | |
f98ca311 TI |
489 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", |
490 | slot_name(p_slot)); | |
a246fa4e KK |
491 | cancel_delayed_work(&p_slot->work); |
492 | if (p_slot->state == BLINKINGOFF_STATE) | |
493 | p_slot->hpc_ops->green_led_on(p_slot); | |
494 | else | |
495 | p_slot->hpc_ops->green_led_off(p_slot); | |
496 | p_slot->hpc_ops->set_attention_status(p_slot, 0); | |
227f0647 RD |
497 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to button press\n", |
498 | slot_name(p_slot)); | |
a246fa4e KK |
499 | p_slot->state = STATIC_STATE; |
500 | break; | |
501 | case POWEROFF_STATE: | |
502 | case POWERON_STATE: | |
503 | /* | |
504 | * Ignore if the slot is on power-on or power-off state; | |
505 | * this means that the previous attention button action | |
506 | * to hot-add or hot-remove is undergoing | |
507 | */ | |
f98ca311 TI |
508 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", |
509 | slot_name(p_slot)); | |
a246fa4e KK |
510 | update_slot_info(p_slot); |
511 | break; | |
512 | default: | |
f98ca311 | 513 | ctrl_warn(ctrl, "Not a valid state\n"); |
a246fa4e KK |
514 | break; |
515 | } | |
516 | } | |
517 | ||
c4028958 | 518 | static void interrupt_event_handler(struct work_struct *work) |
a246fa4e | 519 | { |
c4028958 | 520 | struct event_info *info = container_of(work, struct event_info, work); |
a246fa4e KK |
521 | struct slot *p_slot = info->p_slot; |
522 | ||
523 | mutex_lock(&p_slot->lock); | |
524 | switch (info->event_type) { | |
525 | case INT_BUTTON_PRESS: | |
526 | handle_button_press_event(p_slot); | |
f7391f53 KK |
527 | break; |
528 | case INT_POWER_FAULT: | |
be7bce25 | 529 | ctrl_dbg(p_slot->ctrl, "%s: Power fault\n", __func__); |
f7391f53 KK |
530 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
531 | p_slot->hpc_ops->green_led_off(p_slot); | |
532 | break; | |
533 | default: | |
534 | update_slot_info(p_slot); | |
535 | break; | |
1da177e4 | 536 | } |
a246fa4e | 537 | mutex_unlock(&p_slot->lock); |
1da177e4 | 538 | |
f7391f53 | 539 | kfree(info); |
1da177e4 LT |
540 | } |
541 | ||
542 | ||
a246fa4e | 543 | static int shpchp_enable_slot (struct slot *p_slot) |
1da177e4 LT |
544 | { |
545 | u8 getstatus = 0; | |
ef3be547 | 546 | int rc, retval = -ENODEV; |
f98ca311 | 547 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
548 | |
549 | /* Check to see if (latch closed, card present, power off) */ | |
6aa4cdd0 | 550 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 LT |
551 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
552 | if (rc || !getstatus) { | |
f98ca311 | 553 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 554 | goto out; |
1da177e4 LT |
555 | } |
556 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); | |
557 | if (rc || getstatus) { | |
f98ca311 | 558 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 559 | goto out; |
1da177e4 LT |
560 | } |
561 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); | |
562 | if (rc || getstatus) { | |
f98ca311 TI |
563 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
564 | slot_name(p_slot)); | |
ef3be547 | 565 | goto out; |
1da177e4 | 566 | } |
1da177e4 | 567 | |
2178bfad | 568 | p_slot->is_a_board = 1; |
1da177e4 LT |
569 | |
570 | /* We have to save the presence info for these slots */ | |
2178bfad | 571 | p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); |
572 | p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); | |
f98ca311 | 573 | ctrl_dbg(ctrl, "%s: p_slot->pwr_save %x\n", __func__, p_slot->pwr_save); |
1da177e4 | 574 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 | 575 | |
bed4e9cf BH |
576 | if ((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD && |
577 | p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458) | |
53044f35 | 578 | && p_slot->ctrl->num_slots == 1) { |
bed4e9cf | 579 | /* handle AMD POGO errata; this must be done before enable */ |
53044f35 | 580 | amd_pogo_errata_save_misc_reg(p_slot); |
ef3be547 | 581 | retval = board_added(p_slot); |
bed4e9cf | 582 | /* handle AMD POGO errata; this must be done after enable */ |
53044f35 KD |
583 | amd_pogo_errata_restore_misc_reg(p_slot); |
584 | } else | |
ef3be547 | 585 | retval = board_added(p_slot); |
53044f35 | 586 | |
ef3be547 | 587 | if (retval) { |
2178bfad | 588 | p_slot->hpc_ops->get_adapter_status(p_slot, |
589 | &(p_slot->presence_save)); | |
1da177e4 | 590 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
1da177e4 LT |
591 | } |
592 | ||
2178bfad | 593 | update_slot_info(p_slot); |
ef3be547 KK |
594 | out: |
595 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
596 | return retval; | |
1da177e4 LT |
597 | } |
598 | ||
599 | ||
a246fa4e | 600 | static int shpchp_disable_slot (struct slot *p_slot) |
1da177e4 | 601 | { |
1da177e4 | 602 | u8 getstatus = 0; |
ef3be547 | 603 | int rc, retval = -ENODEV; |
f98ca311 | 604 | struct controller *ctrl = p_slot->ctrl; |
1da177e4 LT |
605 | |
606 | if (!p_slot->ctrl) | |
ee17fd93 | 607 | return -ENODEV; |
1da177e4 | 608 | |
1da177e4 | 609 | /* Check to see if (latch closed, card present, power on) */ |
6aa4cdd0 | 610 | mutex_lock(&p_slot->ctrl->crit_sect); |
1da177e4 | 611 | |
ef3be547 KK |
612 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
613 | if (rc || !getstatus) { | |
f98ca311 | 614 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 615 | goto out; |
1da177e4 | 616 | } |
ef3be547 KK |
617 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
618 | if (rc || getstatus) { | |
f98ca311 | 619 | ctrl_info(ctrl, "Latch open on slot(%s)\n", slot_name(p_slot)); |
ef3be547 | 620 | goto out; |
1da177e4 | 621 | } |
ef3be547 KK |
622 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
623 | if (rc || !getstatus) { | |
be7bce25 | 624 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
f98ca311 | 625 | slot_name(p_slot)); |
ef3be547 | 626 | goto out; |
1da177e4 | 627 | } |
1da177e4 | 628 | |
ef3be547 | 629 | retval = remove_board(p_slot); |
2178bfad | 630 | update_slot_info(p_slot); |
ef3be547 KK |
631 | out: |
632 | mutex_unlock(&p_slot->ctrl->crit_sect); | |
633 | return retval; | |
1da177e4 LT |
634 | } |
635 | ||
a246fa4e KK |
636 | int shpchp_sysfs_enable_slot(struct slot *p_slot) |
637 | { | |
638 | int retval = -ENODEV; | |
f98ca311 | 639 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
640 | |
641 | mutex_lock(&p_slot->lock); | |
642 | switch (p_slot->state) { | |
643 | case BLINKINGON_STATE: | |
644 | cancel_delayed_work(&p_slot->work); | |
df561f66 | 645 | fallthrough; |
a246fa4e KK |
646 | case STATIC_STATE: |
647 | p_slot->state = POWERON_STATE; | |
648 | mutex_unlock(&p_slot->lock); | |
649 | retval = shpchp_enable_slot(p_slot); | |
650 | mutex_lock(&p_slot->lock); | |
651 | p_slot->state = STATIC_STATE; | |
652 | break; | |
653 | case POWERON_STATE: | |
f98ca311 TI |
654 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
655 | slot_name(p_slot)); | |
a246fa4e KK |
656 | break; |
657 | case BLINKINGOFF_STATE: | |
658 | case POWEROFF_STATE: | |
f98ca311 TI |
659 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
660 | slot_name(p_slot)); | |
a246fa4e KK |
661 | break; |
662 | default: | |
f98ca311 TI |
663 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
664 | slot_name(p_slot)); | |
a246fa4e KK |
665 | break; |
666 | } | |
667 | mutex_unlock(&p_slot->lock); | |
668 | ||
669 | return retval; | |
670 | } | |
671 | ||
672 | int shpchp_sysfs_disable_slot(struct slot *p_slot) | |
673 | { | |
674 | int retval = -ENODEV; | |
f98ca311 | 675 | struct controller *ctrl = p_slot->ctrl; |
a246fa4e KK |
676 | |
677 | mutex_lock(&p_slot->lock); | |
678 | switch (p_slot->state) { | |
679 | case BLINKINGOFF_STATE: | |
680 | cancel_delayed_work(&p_slot->work); | |
df561f66 | 681 | fallthrough; |
a246fa4e KK |
682 | case STATIC_STATE: |
683 | p_slot->state = POWEROFF_STATE; | |
684 | mutex_unlock(&p_slot->lock); | |
685 | retval = shpchp_disable_slot(p_slot); | |
686 | mutex_lock(&p_slot->lock); | |
687 | p_slot->state = STATIC_STATE; | |
688 | break; | |
689 | case POWEROFF_STATE: | |
f98ca311 TI |
690 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
691 | slot_name(p_slot)); | |
a246fa4e KK |
692 | break; |
693 | case BLINKINGON_STATE: | |
694 | case POWERON_STATE: | |
f98ca311 TI |
695 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
696 | slot_name(p_slot)); | |
a246fa4e KK |
697 | break; |
698 | default: | |
f98ca311 TI |
699 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
700 | slot_name(p_slot)); | |
a246fa4e KK |
701 | break; |
702 | } | |
703 | mutex_unlock(&p_slot->lock); | |
704 | ||
705 | return retval; | |
706 | } |