blob: 7d770b2cd889a961f2b9c46226b2e7fe59894fb9 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Standard PCI Hot Plug 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 Corp.
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 *
Kristen Accardi8cf4c192005-08-16 15:16:10 -070026 * Send feedback to <greg@kroah.com>,<kristen.c.accardi@intel.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027 *
28 */
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include <linux/pci.h>
Andrew Mortond4d28dd2005-11-13 16:06:40 -080034#include <linux/interrupt.h>
35
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include "shpchp.h"
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038/* Slot Available Register I field definition */
39#define SLOT_33MHZ 0x0000001f
40#define SLOT_66MHZ_PCIX 0x00001f00
41#define SLOT_100MHZ_PCIX 0x001f0000
42#define SLOT_133MHZ_PCIX 0x1f000000
43
44/* Slot Available Register II field definition */
45#define SLOT_66MHZ 0x0000001f
46#define SLOT_66MHZ_PCIX_266 0x00000f00
47#define SLOT_100MHZ_PCIX_266 0x0000f000
48#define SLOT_133MHZ_PCIX_266 0x000f0000
49#define SLOT_66MHZ_PCIX_533 0x00f00000
50#define SLOT_100MHZ_PCIX_533 0x0f000000
51#define SLOT_133MHZ_PCIX_533 0xf0000000
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053/* Slot Configuration */
54#define SLOT_NUM 0x0000001F
55#define FIRST_DEV_NUM 0x00001F00
56#define PSN 0x07FF0000
57#define UPDOWN 0x20000000
58#define MRLSENSOR 0x40000000
59#define ATTN_BUTTON 0x80000000
60
Kenji Kaneshige2b34da72006-05-02 11:09:42 +090061/*
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +090062 * Interrupt Locator Register definitions
63 */
64#define CMD_INTR_PENDING (1 << 0)
65#define SLOT_INTR_PENDING(i) (1 << (i + 1))
66
67/*
Kenji Kaneshigee7138722006-05-02 11:12:37 +090068 * Controller SERR-INT Register
69 */
70#define GLOBAL_INTR_MASK (1 << 0)
71#define GLOBAL_SERR_MASK (1 << 1)
72#define COMMAND_INTR_MASK (1 << 2)
73#define ARBITER_SERR_MASK (1 << 3)
74#define COMMAND_DETECTED (1 << 16)
75#define ARBITER_DETECTED (1 << 17)
76#define SERR_INTR_RSVDZ_MASK 0xfffc0000
77
78/*
Kenji Kaneshige2b34da72006-05-02 11:09:42 +090079 * Logical Slot Register definitions
80 */
81#define SLOT_REG(i) (SLOT1 + (4 * i))
82
Kenji Kaneshige58587592006-05-02 11:10:37 +090083#define SLOT_STATE_SHIFT (0)
84#define SLOT_STATE_MASK (3 << 0)
85#define SLOT_STATE_PWRONLY (1)
86#define SLOT_STATE_ENABLED (2)
87#define SLOT_STATE_DISABLED (3)
88#define PWR_LED_STATE_SHIFT (2)
89#define PWR_LED_STATE_MASK (3 << 2)
90#define ATN_LED_STATE_SHIFT (4)
91#define ATN_LED_STATE_MASK (3 << 4)
92#define ATN_LED_STATE_ON (1)
93#define ATN_LED_STATE_BLINK (2)
94#define ATN_LED_STATE_OFF (3)
95#define POWER_FAULT (1 << 6)
96#define ATN_BUTTON (1 << 7)
97#define MRL_SENSOR (1 << 8)
98#define MHZ66_CAP (1 << 9)
99#define PRSNT_SHIFT (10)
100#define PRSNT_MASK (3 << 10)
101#define PCIX_CAP_SHIFT (12)
102#define PCIX_CAP_MASK_PI1 (3 << 12)
103#define PCIX_CAP_MASK_PI2 (7 << 12)
104#define PRSNT_CHANGE_DETECTED (1 << 16)
105#define ISO_PFAULT_DETECTED (1 << 17)
106#define BUTTON_PRESS_DETECTED (1 << 18)
107#define MRL_CHANGE_DETECTED (1 << 19)
108#define CON_PFAULT_DETECTED (1 << 20)
109#define PRSNT_CHANGE_INTR_MASK (1 << 24)
110#define ISO_PFAULT_INTR_MASK (1 << 25)
111#define BUTTON_PRESS_INTR_MASK (1 << 26)
112#define MRL_CHANGE_INTR_MASK (1 << 27)
113#define CON_PFAULT_INTR_MASK (1 << 28)
114#define MRL_CHANGE_SERR_MASK (1 << 29)
115#define CON_PFAULT_SERR_MASK (1 << 30)
116#define SLOT_REG_RSVDZ_MASK (1 << 15) | (7 << 21)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117
Kenji Kaneshige40853992006-05-12 11:11:48 +0900118/*
119 * SHPC Command Code definitnions
120 *
121 * Slot Operation 00h - 3Fh
122 * Set Bus Segment Speed/Mode A 40h - 47h
123 * Power-Only All Slots 48h
124 * Enable All Slots 49h
125 * Set Bus Segment Speed/Mode B (PI=2) 50h - 5Fh
126 * Reserved Command Codes 60h - BFh
127 * Vendor Specific Commands C0h - FFh
128 */
129#define SET_SLOT_PWR 0x01 /* Slot Operation */
130#define SET_SLOT_ENABLE 0x02
131#define SET_SLOT_DISABLE 0x03
132#define SET_PWR_ON 0x04
133#define SET_PWR_BLINK 0x08
134#define SET_PWR_OFF 0x0c
135#define SET_ATTN_ON 0x10
136#define SET_ATTN_BLINK 0x20
137#define SET_ATTN_OFF 0x30
138#define SETA_PCI_33MHZ 0x40 /* Set Bus Segment Speed/Mode A */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139#define SETA_PCI_66MHZ 0x41
140#define SETA_PCIX_66MHZ 0x42
141#define SETA_PCIX_100MHZ 0x43
142#define SETA_PCIX_133MHZ 0x44
Kenji Kaneshige40853992006-05-12 11:11:48 +0900143#define SETA_RESERVED1 0x45
144#define SETA_RESERVED2 0x46
145#define SETA_RESERVED3 0x47
146#define SET_PWR_ONLY_ALL 0x48 /* Power-Only All Slots */
147#define SET_ENABLE_ALL 0x49 /* Enable All Slots */
148#define SETB_PCI_33MHZ 0x50 /* Set Bus Segment Speed/Mode B */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149#define SETB_PCI_66MHZ 0x51
150#define SETB_PCIX_66MHZ_PM 0x52
151#define SETB_PCIX_100MHZ_PM 0x53
152#define SETB_PCIX_133MHZ_PM 0x54
153#define SETB_PCIX_66MHZ_EM 0x55
154#define SETB_PCIX_100MHZ_EM 0x56
155#define SETB_PCIX_133MHZ_EM 0x57
156#define SETB_PCIX_66MHZ_266 0x58
157#define SETB_PCIX_100MHZ_266 0x59
158#define SETB_PCIX_133MHZ_266 0x5a
159#define SETB_PCIX_66MHZ_533 0x5b
160#define SETB_PCIX_100MHZ_533 0x5c
161#define SETB_PCIX_133MHZ_533 0x5d
Kenji Kaneshige40853992006-05-12 11:11:48 +0900162#define SETB_RESERVED1 0x5e
163#define SETB_RESERVED2 0x5f
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164
Kenji Kaneshige40853992006-05-12 11:11:48 +0900165/*
166 * SHPC controller command error code
167 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168#define SWITCH_OPEN 0x1
169#define INVALID_CMD 0x2
170#define INVALID_SPEED_MODE 0x4
171
Kenji Kaneshige40853992006-05-12 11:11:48 +0900172/*
173 * For accessing SHPC Working Register Set via PCI Configuration Space
174 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175#define DWORD_SELECT 0x2
176#define DWORD_DATA 0x4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
178/* Field Offset in Logical Slot Register - byte boundary */
179#define SLOT_EVENT_LATCH 0x2
180#define SLOT_SERR_INT_MASK 0x3
181
Kenji Kaneshige82d5f4a2006-05-03 23:42:04 +0900182static atomic_t shpchp_num_controllers = ATOMIC_INIT(0);
183
David Howells7d12e782006-10-05 14:55:46 +0100184static irqreturn_t shpc_isr(int irq, void *dev_id);
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800185static void start_int_poll_timer(struct controller *ctrl, int sec);
Kenji Kaneshiged29aadd2006-01-26 09:59:24 +0900186static int hpc_check_cmd_status(struct controller *ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900188static inline u8 shpc_readb(struct controller *ctrl, int reg)
189{
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800190 return readb(ctrl->creg + reg);
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900191}
192
193static inline void shpc_writeb(struct controller *ctrl, int reg, u8 val)
194{
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800195 writeb(val, ctrl->creg + reg);
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900196}
197
198static inline u16 shpc_readw(struct controller *ctrl, int reg)
199{
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800200 return readw(ctrl->creg + reg);
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900201}
202
203static inline void shpc_writew(struct controller *ctrl, int reg, u16 val)
204{
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800205 writew(val, ctrl->creg + reg);
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900206}
207
208static inline u32 shpc_readl(struct controller *ctrl, int reg)
209{
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800210 return readl(ctrl->creg + reg);
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900211}
212
213static inline void shpc_writel(struct controller *ctrl, int reg, u32 val)
214{
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800215 writel(val, ctrl->creg + reg);
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900216}
217
218static inline int shpc_indirect_read(struct controller *ctrl, int index,
219 u32 *value)
220{
221 int rc;
222 u32 cap_offset = ctrl->cap_offset;
223 struct pci_dev *pdev = ctrl->pci_dev;
224
225 rc = pci_write_config_byte(pdev, cap_offset + DWORD_SELECT, index);
226 if (rc)
227 return rc;
228 return pci_read_config_dword(pdev, cap_offset + DWORD_DATA, value);
229}
230
Kenji Kaneshigef4263952006-05-12 11:13:02 +0900231/*
232 * This is the interrupt polling timeout function.
233 */
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800234static void int_poll_timeout(unsigned long data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235{
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800236 struct controller *ctrl = (struct controller *)data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237
Kenji Kaneshigef4263952006-05-12 11:13:02 +0900238 /* Poll for interrupt events. regs == NULL => polling */
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800239 shpc_isr(0, ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800241 init_timer(&ctrl->poll_timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 if (!shpchp_poll_time)
Kenji Kaneshigef4263952006-05-12 11:13:02 +0900243 shpchp_poll_time = 2; /* default polling interval is 2 sec */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800245 start_int_poll_timer(ctrl, shpchp_poll_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246}
247
Kenji Kaneshigef4263952006-05-12 11:13:02 +0900248/*
249 * This function starts the interrupt polling timer.
250 */
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800251static void start_int_poll_timer(struct controller *ctrl, int sec)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
Kenji Kaneshigef4263952006-05-12 11:13:02 +0900253 /* Clamp to sane value */
254 if ((sec <= 0) || (sec > 60))
255 sec = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800257 ctrl->poll_timer.function = &int_poll_timeout;
258 ctrl->poll_timer.data = (unsigned long)ctrl;
259 ctrl->poll_timer.expires = jiffies + sec * HZ;
260 add_timer(&ctrl->poll_timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261}
262
Kenji Kaneshiged1729cc2006-09-28 15:51:21 -0700263static inline int is_ctrl_busy(struct controller *ctrl)
264{
265 u16 cmd_status = shpc_readw(ctrl, CMD_STATUS);
266 return cmd_status & 0x1;
267}
268
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700269/*
270 * Returns 1 if SHPC finishes executing a command within 1 sec,
271 * otherwise returns 0.
272 */
273static inline int shpc_poll_ctrl_busy(struct controller *ctrl)
274{
275 int i;
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700276
Kenji Kaneshiged1729cc2006-09-28 15:51:21 -0700277 if (!is_ctrl_busy(ctrl))
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700278 return 1;
279
280 /* Check every 0.1 sec for a total of 1 sec */
281 for (i = 0; i < 10; i++) {
282 msleep(100);
Kenji Kaneshiged1729cc2006-09-28 15:51:21 -0700283 if (!is_ctrl_busy(ctrl))
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700284 return 1;
285 }
286
287 return 0;
288}
289
Kenji Kaneshigebd62e272005-11-25 12:28:53 +0900290static inline int shpc_wait_cmd(struct controller *ctrl)
291{
292 int retval = 0;
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700293 unsigned long timeout = msecs_to_jiffies(1000);
294 int rc;
295
296 if (shpchp_poll_mode)
297 rc = shpc_poll_ctrl_busy(ctrl);
298 else
299 rc = wait_event_interruptible_timeout(ctrl->queue,
Kenji Kaneshige6aa562c2006-09-28 15:51:36 -0700300 !is_ctrl_busy(ctrl), timeout);
Kenji Kaneshiged1729cc2006-09-28 15:51:21 -0700301 if (!rc && is_ctrl_busy(ctrl)) {
Kenji Kaneshigebd62e272005-11-25 12:28:53 +0900302 retval = -EIO;
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700303 err("Command not completed in 1000 msec\n");
Kenji Kaneshigebd62e272005-11-25 12:28:53 +0900304 } else if (rc < 0) {
305 retval = -EINTR;
306 info("Command was interrupted by a signal\n");
307 }
Kenji Kaneshigebd62e272005-11-25 12:28:53 +0900308
309 return retval;
310}
311
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
313{
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900314 struct controller *ctrl = slot->ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 u16 cmd_status;
316 int retval = 0;
317 u16 temp_word;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Kenji Kaneshiged29aadd2006-01-26 09:59:24 +0900319 mutex_lock(&slot->ctrl->cmd_lock);
320
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700321 if (!shpc_poll_ctrl_busy(ctrl)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 /* After 1 sec and and the controller is still busy */
Kenji Kaneshigeb4a1eff2006-09-22 12:52:37 -0700323 err("%s : Controller is still busy after 1 sec.\n",
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800324 __func__);
Kenji Kaneshiged29aadd2006-01-26 09:59:24 +0900325 retval = -EBUSY;
326 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 }
328
329 ++t_slot;
330 temp_word = (t_slot << 8) | (cmd & 0xFF);
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800331 dbg("%s: t_slot %x cmd %x\n", __func__, t_slot, cmd);
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800332
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 /* To make sure the Controller Busy bit is 0 before we send out the
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800334 * command.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 */
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900336 shpc_writew(ctrl, CMD, temp_word);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
Kenji Kaneshigebd62e272005-11-25 12:28:53 +0900338 /*
339 * Wait for command completion.
340 */
341 retval = shpc_wait_cmd(slot->ctrl);
Kenji Kaneshiged29aadd2006-01-26 09:59:24 +0900342 if (retval)
343 goto out;
344
345 cmd_status = hpc_check_cmd_status(slot->ctrl);
346 if (cmd_status) {
347 err("%s: Failed to issued command 0x%x (error code = %d)\n",
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800348 __func__, cmd, cmd_status);
Kenji Kaneshiged29aadd2006-01-26 09:59:24 +0900349 retval = -EIO;
350 }
351 out:
352 mutex_unlock(&slot->ctrl->cmd_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 return retval;
354}
355
356static int hpc_check_cmd_status(struct controller *ctrl)
357{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 int retval = 0;
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800359 u16 cmd_status = shpc_readw(ctrl, CMD_STATUS) & 0x000F;
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800360
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 switch (cmd_status >> 1) {
362 case 0:
363 retval = 0;
364 break;
365 case 1:
366 retval = SWITCH_OPEN;
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800367 err("%s: Switch opened!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 break;
369 case 2:
370 retval = INVALID_CMD;
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800371 err("%s: Invalid HPC command!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 break;
373 case 4:
374 retval = INVALID_SPEED_MODE;
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800375 err("%s: Invalid bus speed/mode!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 break;
377 default:
378 retval = cmd_status;
379 }
380
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 return retval;
382}
383
384
385static int hpc_get_attention_status(struct slot *slot, u8 *status)
386{
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900387 struct controller *ctrl = slot->ctrl;
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800388 u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
389 u8 state = (slot_reg & ATN_LED_STATE_MASK) >> ATN_LED_STATE_SHIFT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390
Kenji Kaneshige58587592006-05-02 11:10:37 +0900391 switch (state) {
392 case ATN_LED_STATE_ON:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 *status = 1; /* On */
394 break;
Kenji Kaneshige58587592006-05-02 11:10:37 +0900395 case ATN_LED_STATE_BLINK:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 *status = 2; /* Blink */
397 break;
Kenji Kaneshige58587592006-05-02 11:10:37 +0900398 case ATN_LED_STATE_OFF:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 *status = 0; /* Off */
400 break;
401 default:
Kenji Kaneshige58587592006-05-02 11:10:37 +0900402 *status = 0xFF; /* Reserved */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 break;
404 }
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 return 0;
407}
408
409static int hpc_get_power_status(struct slot * slot, u8 *status)
410{
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900411 struct controller *ctrl = slot->ctrl;
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800412 u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
413 u8 state = (slot_reg & SLOT_STATE_MASK) >> SLOT_STATE_SHIFT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414
Kenji Kaneshige58587592006-05-02 11:10:37 +0900415 switch (state) {
416 case SLOT_STATE_PWRONLY:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 *status = 2; /* Powered only */
418 break;
Kenji Kaneshige58587592006-05-02 11:10:37 +0900419 case SLOT_STATE_ENABLED:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 *status = 1; /* Enabled */
421 break;
Kenji Kaneshige58587592006-05-02 11:10:37 +0900422 case SLOT_STATE_DISABLED:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 *status = 0; /* Disabled */
424 break;
425 default:
Kenji Kaneshige58587592006-05-02 11:10:37 +0900426 *status = 0xFF; /* Reserved */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 break;
428 }
429
Kenji Kaneshige58587592006-05-02 11:10:37 +0900430 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431}
432
433
434static int hpc_get_latch_status(struct slot *slot, u8 *status)
435{
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900436 struct controller *ctrl = slot->ctrl;
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800437 u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438
Kenji Kaneshige58587592006-05-02 11:10:37 +0900439 *status = !!(slot_reg & MRL_SENSOR); /* 0 -> close; 1 -> open */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 return 0;
442}
443
444static int hpc_get_adapter_status(struct slot *slot, u8 *status)
445{
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900446 struct controller *ctrl = slot->ctrl;
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800447 u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
448 u8 state = (slot_reg & PRSNT_MASK) >> PRSNT_SHIFT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
Kenji Kaneshige58587592006-05-02 11:10:37 +0900450 *status = (state != 0x3) ? 1 : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 return 0;
453}
454
455static int hpc_get_prog_int(struct slot *slot, u8 *prog_int)
456{
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900457 struct controller *ctrl = slot->ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900459 *prog_int = shpc_readb(ctrl, PROG_INTERFACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 return 0;
462}
463
464static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value)
465{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 int retval = 0;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900467 struct controller *ctrl = slot->ctrl;
Kenji Kaneshige2b34da72006-05-02 11:09:42 +0900468 u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
Kenji Kaneshige58587592006-05-02 11:10:37 +0900469 u8 m66_cap = !!(slot_reg & MHZ66_CAP);
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +0900470 u8 pi, pcix_cap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +0900472 if ((retval = hpc_get_prog_int(slot, &pi)))
473 return retval;
474
475 switch (pi) {
476 case 1:
477 pcix_cap = (slot_reg & PCIX_CAP_MASK_PI1) >> PCIX_CAP_SHIFT;
478 break;
479 case 2:
480 pcix_cap = (slot_reg & PCIX_CAP_MASK_PI2) >> PCIX_CAP_SHIFT;
481 break;
482 default:
483 return -ENODEV;
484 }
485
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900486 dbg("%s: slot_reg = %x, pcix_cap = %x, m66_cap = %x\n",
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800487 __func__, slot_reg, pcix_cap, m66_cap);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900489 switch (pcix_cap) {
490 case 0x0:
491 *value = m66_cap ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
492 break;
493 case 0x1:
494 *value = PCI_SPEED_66MHz_PCIX;
495 break;
496 case 0x3:
497 *value = PCI_SPEED_133MHz_PCIX;
498 break;
499 case 0x4:
500 *value = PCI_SPEED_133MHz_PCIX_266;
501 break;
502 case 0x5:
503 *value = PCI_SPEED_133MHz_PCIX_533;
504 break;
505 case 0x2:
506 default:
507 *value = PCI_SPEED_UNKNOWN;
508 retval = -ENODEV;
509 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 }
511
512 dbg("Adapter speed = %d\n", *value);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 return retval;
514}
515
516static int hpc_get_mode1_ECC_cap(struct slot *slot, u8 *mode)
517{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 int retval = 0;
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800519 struct controller *ctrl = slot->ctrl;
520 u16 sec_bus_status = shpc_readw(ctrl, SEC_BUS_CONFIG);
521 u8 pi = shpc_readb(ctrl, PROG_INTERFACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522
523 if (pi == 2) {
Kenji Kaneshige87d6c552005-11-24 11:35:05 +0900524 *mode = (sec_bus_status & 0x0100) >> 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 } else {
526 retval = -1;
527 }
528
529 dbg("Mode 1 ECC cap = %d\n", *mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 return retval;
531}
532
533static int hpc_query_power_fault(struct slot * slot)
534{
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900535 struct controller *ctrl = slot->ctrl;
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800536 u32 slot_reg = shpc_readl(ctrl, SLOT_REG(slot->hp_slot));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 /* Note: Logic 0 => fault */
Kenji Kaneshige58587592006-05-02 11:10:37 +0900539 return !(slot_reg & POWER_FAULT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540}
541
542static int hpc_set_attention_status(struct slot *slot, u8 value)
543{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 u8 slot_cmd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545
546 switch (value) {
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800547 case 0 :
Kenji Kaneshige40853992006-05-12 11:11:48 +0900548 slot_cmd = SET_ATTN_OFF; /* OFF */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 break;
550 case 1:
Kenji Kaneshige40853992006-05-12 11:11:48 +0900551 slot_cmd = SET_ATTN_ON; /* ON */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 break;
553 case 2:
Kenji Kaneshige40853992006-05-12 11:11:48 +0900554 slot_cmd = SET_ATTN_BLINK; /* BLINK */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 break;
556 default:
557 return -1;
558 }
559
Kenji Kaneshiged4fbf602006-05-12 11:05:59 +0900560 return shpc_write_cmd(slot, slot->hp_slot, slot_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561}
562
563
564static void hpc_set_green_led_on(struct slot *slot)
565{
Kenji Kaneshige40853992006-05-12 11:11:48 +0900566 shpc_write_cmd(slot, slot->hp_slot, SET_PWR_ON);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567}
568
569static void hpc_set_green_led_off(struct slot *slot)
570{
Kenji Kaneshige40853992006-05-12 11:11:48 +0900571 shpc_write_cmd(slot, slot->hp_slot, SET_PWR_OFF);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572}
573
574static void hpc_set_green_led_blink(struct slot *slot)
575{
Kenji Kaneshige40853992006-05-12 11:11:48 +0900576 shpc_write_cmd(slot, slot->hp_slot, SET_PWR_BLINK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577}
578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579static void hpc_release_ctlr(struct controller *ctrl)
580{
Kenji Kaneshigef7391f52006-02-21 15:45:45 -0800581 int i;
Kenji Kaneshiged49f2c42006-05-03 23:34:17 +0900582 u32 slot_reg, serr_int;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
Kenji Kaneshigef7391f52006-02-21 15:45:45 -0800584 /*
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +0900585 * Mask event interrupts and SERRs of all slots
Kenji Kaneshigef7391f52006-02-21 15:45:45 -0800586 */
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +0900587 for (i = 0; i < ctrl->num_slots; i++) {
588 slot_reg = shpc_readl(ctrl, SLOT_REG(i));
589 slot_reg |= (PRSNT_CHANGE_INTR_MASK | ISO_PFAULT_INTR_MASK |
590 BUTTON_PRESS_INTR_MASK | MRL_CHANGE_INTR_MASK |
591 CON_PFAULT_INTR_MASK | MRL_CHANGE_SERR_MASK |
592 CON_PFAULT_SERR_MASK);
593 slot_reg &= ~SLOT_REG_RSVDZ_MASK;
594 shpc_writel(ctrl, SLOT_REG(i), slot_reg);
595 }
Kenji Kaneshigef7391f52006-02-21 15:45:45 -0800596
597 cleanup_slots(ctrl);
598
Kenji Kaneshiged49f2c42006-05-03 23:34:17 +0900599 /*
Joe Perches36098012007-12-17 11:40:11 -0800600 * Mask SERR and System Interrupt generation
Kenji Kaneshiged49f2c42006-05-03 23:34:17 +0900601 */
602 serr_int = shpc_readl(ctrl, SERR_INTR_ENABLE);
603 serr_int |= (GLOBAL_INTR_MASK | GLOBAL_SERR_MASK |
604 COMMAND_INTR_MASK | ARBITER_SERR_MASK);
605 serr_int &= ~SERR_INTR_RSVDZ_MASK;
606 shpc_writel(ctrl, SERR_INTR_ENABLE, serr_int);
607
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800608 if (shpchp_poll_mode)
609 del_timer(&ctrl->poll_timer);
610 else {
611 free_irq(ctrl->pci_dev->irq, ctrl);
612 pci_disable_msi(ctrl->pci_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 }
Kenji Kaneshigef7391f52006-02-21 15:45:45 -0800614
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800615 iounmap(ctrl->creg);
616 release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617
Kenji Kaneshige82d5f4a2006-05-03 23:42:04 +0900618 /*
619 * If this is the last controller to be released, destroy the
620 * shpchpd work queue
621 */
622 if (atomic_dec_and_test(&shpchp_num_controllers))
623 destroy_workqueue(shpchp_wq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624}
625
626static int hpc_power_on_slot(struct slot * slot)
627{
Kenji Kaneshiged4fbf602006-05-12 11:05:59 +0900628 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Kenji Kaneshige40853992006-05-12 11:11:48 +0900630 retval = shpc_write_cmd(slot, slot->hp_slot, SET_SLOT_PWR);
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800631 if (retval)
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800632 err("%s: Write command failed!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800634 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635}
636
637static int hpc_slot_enable(struct slot * slot)
638{
Kenji Kaneshiged4fbf602006-05-12 11:05:59 +0900639 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640
Kenji Kaneshige40853992006-05-12 11:11:48 +0900641 /* Slot - Enable, Power Indicator - Blink, Attention Indicator - Off */
642 retval = shpc_write_cmd(slot, slot->hp_slot,
643 SET_SLOT_ENABLE | SET_PWR_BLINK | SET_ATTN_OFF);
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800644 if (retval)
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800645 err("%s: Write command failed!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800647 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648}
649
650static int hpc_slot_disable(struct slot * slot)
651{
Kenji Kaneshiged4fbf602006-05-12 11:05:59 +0900652 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653
Kenji Kaneshige40853992006-05-12 11:11:48 +0900654 /* Slot - Disable, Power Indicator - Off, Attention Indicator - On */
655 retval = shpc_write_cmd(slot, slot->hp_slot,
656 SET_SLOT_DISABLE | SET_PWR_OFF | SET_ATTN_ON);
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800657 if (retval)
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800658 err("%s: Write command failed!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800660 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661}
662
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663static int hpc_set_bus_speed_mode(struct slot * slot, enum pci_bus_speed value)
664{
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900665 int retval;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900666 struct controller *ctrl = slot->ctrl;
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900667 u8 pi, cmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900669 pi = shpc_readb(ctrl, PROG_INTERFACE);
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900670 if ((pi == 1) && (value > PCI_SPEED_133MHz_PCIX))
671 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900673 switch (value) {
674 case PCI_SPEED_33MHz:
675 cmd = SETA_PCI_33MHZ;
676 break;
677 case PCI_SPEED_66MHz:
678 cmd = SETA_PCI_66MHZ;
679 break;
680 case PCI_SPEED_66MHz_PCIX:
681 cmd = SETA_PCIX_66MHZ;
682 break;
683 case PCI_SPEED_100MHz_PCIX:
684 cmd = SETA_PCIX_100MHZ;
685 break;
686 case PCI_SPEED_133MHz_PCIX:
687 cmd = SETA_PCIX_133MHZ;
688 break;
689 case PCI_SPEED_66MHz_PCIX_ECC:
690 cmd = SETB_PCIX_66MHZ_EM;
691 break;
692 case PCI_SPEED_100MHz_PCIX_ECC:
693 cmd = SETB_PCIX_100MHZ_EM;
694 break;
695 case PCI_SPEED_133MHz_PCIX_ECC:
696 cmd = SETB_PCIX_133MHZ_EM;
697 break;
698 case PCI_SPEED_66MHz_PCIX_266:
699 cmd = SETB_PCIX_66MHZ_266;
700 break;
701 case PCI_SPEED_100MHz_PCIX_266:
702 cmd = SETB_PCIX_100MHZ_266;
703 break;
704 case PCI_SPEED_133MHz_PCIX_266:
705 cmd = SETB_PCIX_133MHZ_266;
706 break;
707 case PCI_SPEED_66MHz_PCIX_533:
708 cmd = SETB_PCIX_66MHZ_533;
709 break;
710 case PCI_SPEED_100MHz_PCIX_533:
711 cmd = SETB_PCIX_100MHZ_533;
712 break;
713 case PCI_SPEED_133MHz_PCIX_533:
714 cmd = SETB_PCIX_133MHZ_533;
715 break;
716 default:
717 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 }
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900719
720 retval = shpc_write_cmd(slot, 0, cmd);
721 if (retval)
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800722 err("%s: Write command failed!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 return retval;
725}
726
David Howells7d12e782006-10-05 14:55:46 +0100727static irqreturn_t shpc_isr(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728{
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900729 struct controller *ctrl = (struct controller *)dev_id;
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900730 u32 serr_int, slot_reg, intr_loc, intr_loc2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 int hp_slot;
732
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 /* Check to see if it was our interrupt */
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900734 intr_loc = shpc_readl(ctrl, INTR_LOC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 if (!intr_loc)
736 return IRQ_NONE;
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900737
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800738 dbg("%s: intr_loc = %x\n",__func__, intr_loc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739
740 if(!shpchp_poll_mode) {
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900741 /*
742 * Mask Global Interrupt Mask - see implementation
743 * note on p. 139 of SHPC spec rev 1.0
744 */
745 serr_int = shpc_readl(ctrl, SERR_INTR_ENABLE);
746 serr_int |= GLOBAL_INTR_MASK;
747 serr_int &= ~SERR_INTR_RSVDZ_MASK;
748 shpc_writel(ctrl, SERR_INTR_ENABLE, serr_int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900750 intr_loc2 = shpc_readl(ctrl, INTR_LOC);
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800751 dbg("%s: intr_loc2 = %x\n",__func__, intr_loc2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 }
753
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900754 if (intr_loc & CMD_INTR_PENDING) {
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800755 /*
756 * Command Complete Interrupt Pending
Kenji Kaneshigef467f612005-11-24 11:39:29 +0900757 * RO only - clear by writing 1 to the Command Completion
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758 * Detect bit in Controller SERR-INT register
759 */
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900760 serr_int = shpc_readl(ctrl, SERR_INTR_ENABLE);
761 serr_int &= ~SERR_INTR_RSVDZ_MASK;
762 shpc_writel(ctrl, SERR_INTR_ENABLE, serr_int);
763
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 wake_up_interruptible(&ctrl->queue);
765 }
766
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900767 if (!(intr_loc & ~CMD_INTR_PENDING))
Kenji Kaneshigee4e73042006-01-26 10:05:57 +0900768 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800770 for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) {
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900771 /* To find out which slot has interrupt pending */
772 if (!(intr_loc & SLOT_INTR_PENDING(hp_slot)))
773 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900775 slot_reg = shpc_readl(ctrl, SLOT_REG(hp_slot));
776 dbg("%s: Slot %x with intr, slot register = %x\n",
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800777 __func__, hp_slot, slot_reg);
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900778
779 if (slot_reg & MRL_CHANGE_DETECTED)
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800780 shpchp_handle_switch_change(hp_slot, ctrl);
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900781
782 if (slot_reg & BUTTON_PRESS_DETECTED)
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800783 shpchp_handle_attention_button(hp_slot, ctrl);
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900784
785 if (slot_reg & PRSNT_CHANGE_DETECTED)
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800786 shpchp_handle_presence_change(hp_slot, ctrl);
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900787
788 if (slot_reg & (ISO_PFAULT_DETECTED | CON_PFAULT_DETECTED))
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800789 shpchp_handle_power_fault(hp_slot, ctrl);
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900790
791 /* Clear all slot events */
792 slot_reg &= ~SLOT_REG_RSVDZ_MASK;
793 shpc_writel(ctrl, SLOT_REG(hp_slot), slot_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 }
Kenji Kaneshigee4e73042006-01-26 10:05:57 +0900795 out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 if (!shpchp_poll_mode) {
797 /* Unmask Global Interrupt Mask */
Kenji Kaneshigec4cecc12006-05-12 11:10:56 +0900798 serr_int = shpc_readl(ctrl, SERR_INTR_ENABLE);
799 serr_int &= ~(GLOBAL_INTR_MASK | SERR_INTR_RSVDZ_MASK);
800 shpc_writel(ctrl, SERR_INTR_ENABLE, serr_int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 }
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800802
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 return IRQ_HANDLED;
804}
805
806static int hpc_get_max_bus_speed (struct slot *slot, enum pci_bus_speed *value)
807{
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900808 int retval = 0;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900809 struct controller *ctrl = slot->ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900811 u8 pi = shpc_readb(ctrl, PROG_INTERFACE);
812 u32 slot_avail1 = shpc_readl(ctrl, SLOT_AVAIL1);
813 u32 slot_avail2 = shpc_readl(ctrl, SLOT_AVAIL2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 if (pi == 2) {
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900816 if (slot_avail2 & SLOT_133MHZ_PCIX_533)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900817 bus_speed = PCI_SPEED_133MHz_PCIX_533;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900818 else if (slot_avail2 & SLOT_100MHZ_PCIX_533)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900819 bus_speed = PCI_SPEED_100MHz_PCIX_533;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900820 else if (slot_avail2 & SLOT_66MHZ_PCIX_533)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900821 bus_speed = PCI_SPEED_66MHz_PCIX_533;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900822 else if (slot_avail2 & SLOT_133MHZ_PCIX_266)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900823 bus_speed = PCI_SPEED_133MHz_PCIX_266;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900824 else if (slot_avail2 & SLOT_100MHZ_PCIX_266)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900825 bus_speed = PCI_SPEED_100MHz_PCIX_266;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900826 else if (slot_avail2 & SLOT_66MHZ_PCIX_266)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900827 bus_speed = PCI_SPEED_66MHz_PCIX_266;
828 }
829
830 if (bus_speed == PCI_SPEED_UNKNOWN) {
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900831 if (slot_avail1 & SLOT_133MHZ_PCIX)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900832 bus_speed = PCI_SPEED_133MHz_PCIX;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900833 else if (slot_avail1 & SLOT_100MHZ_PCIX)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900834 bus_speed = PCI_SPEED_100MHz_PCIX;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900835 else if (slot_avail1 & SLOT_66MHZ_PCIX)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900836 bus_speed = PCI_SPEED_66MHz_PCIX;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900837 else if (slot_avail2 & SLOT_66MHZ)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900838 bus_speed = PCI_SPEED_66MHz;
Kenji Kaneshige6558b6a2005-11-24 13:44:01 +0900839 else if (slot_avail1 & SLOT_33MHZ)
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900840 bus_speed = PCI_SPEED_33MHz;
841 else
842 retval = -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 }
844
845 *value = bus_speed;
846 dbg("Max bus speed = %d\n", bus_speed);
Kenji Kaneshige1555b332007-01-09 13:03:01 -0800847
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 return retval;
849}
850
851static int hpc_get_cur_bus_speed (struct slot *slot, enum pci_bus_speed *value)
852{
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900853 int retval = 0;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900854 struct controller *ctrl = slot->ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855 enum pci_bus_speed bus_speed = PCI_SPEED_UNKNOWN;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900856 u16 sec_bus_reg = shpc_readw(ctrl, SEC_BUS_CONFIG);
857 u8 pi = shpc_readb(ctrl, PROG_INTERFACE);
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900858 u8 speed_mode = (pi == 2) ? (sec_bus_reg & 0xF) : (sec_bus_reg & 0x7);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900860 if ((pi == 1) && (speed_mode > 4)) {
861 *value = PCI_SPEED_UNKNOWN;
862 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 }
864
Kenji Kaneshige0afabe92006-03-01 14:55:11 +0900865 switch (speed_mode) {
866 case 0x0:
867 *value = PCI_SPEED_33MHz;
868 break;
869 case 0x1:
870 *value = PCI_SPEED_66MHz;
871 break;
872 case 0x2:
873 *value = PCI_SPEED_66MHz_PCIX;
874 break;
875 case 0x3:
876 *value = PCI_SPEED_100MHz_PCIX;
877 break;
878 case 0x4:
879 *value = PCI_SPEED_133MHz_PCIX;
880 break;
881 case 0x5:
882 *value = PCI_SPEED_66MHz_PCIX_ECC;
883 break;
884 case 0x6:
885 *value = PCI_SPEED_100MHz_PCIX_ECC;
886 break;
887 case 0x7:
888 *value = PCI_SPEED_133MHz_PCIX_ECC;
889 break;
890 case 0x8:
891 *value = PCI_SPEED_66MHz_PCIX_266;
892 break;
893 case 0x9:
894 *value = PCI_SPEED_100MHz_PCIX_266;
895 break;
896 case 0xa:
897 *value = PCI_SPEED_133MHz_PCIX_266;
898 break;
899 case 0xb:
900 *value = PCI_SPEED_66MHz_PCIX_533;
901 break;
902 case 0xc:
903 *value = PCI_SPEED_100MHz_PCIX_533;
904 break;
905 case 0xd:
906 *value = PCI_SPEED_133MHz_PCIX_533;
907 break;
908 default:
909 *value = PCI_SPEED_UNKNOWN;
910 retval = -ENODEV;
911 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 }
913
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 dbg("Current bus speed = %d\n", bus_speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915 return retval;
916}
917
918static struct hpc_ops shpchp_hpc_ops = {
919 .power_on_slot = hpc_power_on_slot,
920 .slot_enable = hpc_slot_enable,
921 .slot_disable = hpc_slot_disable,
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800922 .set_bus_speed_mode = hpc_set_bus_speed_mode,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 .set_attention_status = hpc_set_attention_status,
924 .get_power_status = hpc_get_power_status,
925 .get_attention_status = hpc_get_attention_status,
926 .get_latch_status = hpc_get_latch_status,
927 .get_adapter_status = hpc_get_adapter_status,
928
929 .get_max_bus_speed = hpc_get_max_bus_speed,
930 .get_cur_bus_speed = hpc_get_cur_bus_speed,
931 .get_adapter_speed = hpc_get_adapter_speed,
932 .get_mode1_ECC_cap = hpc_get_mode1_ECC_cap,
933 .get_prog_int = hpc_get_prog_int,
934
935 .query_power_fault = hpc_query_power_fault,
936 .green_led_on = hpc_set_green_led_on,
937 .green_led_off = hpc_set_green_led_off,
938 .green_led_blink = hpc_set_green_led_blink,
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800939
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940 .release_ctlr = hpc_release_ctlr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941};
942
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800943int shpc_init(struct controller *ctrl, struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944{
Amol Lad662a98f2006-10-05 12:07:32 +0530945 int rc = -1, num_slots = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 u8 hp_slot;
Kenji Kaneshige04559862005-11-24 11:36:59 +0900947 u32 shpc_base_offset;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900948 u32 tempdword, slot_reg, slot_config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 u8 i;
950
Kenji Kaneshige04559862005-11-24 11:36:59 +0900951 ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */
952
rajesh.shah@intel.comee138332005-10-13 12:05:42 -0700953 if ((pdev->vendor == PCI_VENDOR_ID_AMD) || (pdev->device ==
954 PCI_DEVICE_ID_AMD_GOLAM_7450)) {
Kenji Kaneshige04559862005-11-24 11:36:59 +0900955 /* amd shpc driver doesn't use Base Offset; assume 0 */
956 ctrl->mmio_base = pci_resource_start(pdev, 0);
957 ctrl->mmio_size = pci_resource_len(pdev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958 } else {
Kenji Kaneshige04559862005-11-24 11:36:59 +0900959 ctrl->cap_offset = pci_find_capability(pdev, PCI_CAP_ID_SHPC);
960 if (!ctrl->cap_offset) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800961 err("%s : cap_offset == 0\n", __func__);
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800962 goto abort;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 }
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800964 dbg("%s: cap_offset = %x\n", __func__, ctrl->cap_offset);
Kenji Kaneshige04559862005-11-24 11:36:59 +0900965
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900966 rc = shpc_indirect_read(ctrl, 0, &shpc_base_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 if (rc) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800968 err("%s: cannot read base_offset\n", __func__);
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800969 goto abort;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 }
971
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900972 rc = shpc_indirect_read(ctrl, 3, &tempdword);
Kenji Kaneshige04559862005-11-24 11:36:59 +0900973 if (rc) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800974 err("%s: cannot read slot config\n", __func__);
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800975 goto abort;
Kenji Kaneshige04559862005-11-24 11:36:59 +0900976 }
977 num_slots = tempdword & SLOT_NUM;
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800978 dbg("%s: num_slots (indirect) %x\n", __func__, num_slots);
Kenji Kaneshige04559862005-11-24 11:36:59 +0900979
980 for (i = 0; i < 9 + num_slots; i++) {
Kenji Kaneshige75d97c52006-05-02 11:08:42 +0900981 rc = shpc_indirect_read(ctrl, i, &tempdword);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982 if (rc) {
Kenji Kaneshige04559862005-11-24 11:36:59 +0900983 err("%s: cannot read creg (index = %d)\n",
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800984 __func__, i);
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -0800985 goto abort;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 }
Harvey Harrison66bef8c2008-03-03 19:09:46 -0800987 dbg("%s: offset %d: value %x\n", __func__,i,
rajesh.shah@intel.com7c8942f2005-10-13 12:05:43 -0700988 tempdword);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989 }
Kenji Kaneshige04559862005-11-24 11:36:59 +0900990
991 ctrl->mmio_base =
992 pci_resource_start(pdev, 0) + shpc_base_offset;
993 ctrl->mmio_size = 0x24 + 0x4 * num_slots;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994 }
995
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800996 info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n", pdev->vendor, pdev->device, pdev->subsystem_vendor,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 pdev->subsystem_device);
Kenji Kaneshige9f593e32007-01-09 13:03:10 -0800998
Amol Lad662a98f2006-10-05 12:07:32 +0530999 rc = pci_enable_device(pdev);
1000 if (rc) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001001 err("%s: pci_enable_device failed\n", __func__);
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001002 goto abort;
Amol Lad662a98f2006-10-05 12:07:32 +05301003 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004
Kenji Kaneshige04559862005-11-24 11:36:59 +09001005 if (!request_mem_region(ctrl->mmio_base, ctrl->mmio_size, MY_NAME)) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001006 err("%s: cannot reserve MMIO region\n", __func__);
Amol Lad662a98f2006-10-05 12:07:32 +05301007 rc = -1;
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001008 goto abort;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 }
1010
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001011 ctrl->creg = ioremap(ctrl->mmio_base, ctrl->mmio_size);
1012 if (!ctrl->creg) {
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001013 err("%s: cannot remap MMIO region %lx @ %lx\n", __func__,
Kenji Kaneshige04559862005-11-24 11:36:59 +09001014 ctrl->mmio_size, ctrl->mmio_base);
1015 release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
Amol Lad662a98f2006-10-05 12:07:32 +05301016 rc = -1;
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001017 goto abort;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 }
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001019 dbg("%s: ctrl->creg %p\n", __func__, ctrl->creg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020
Ingo Molnar6aa4cdd2006-01-13 16:02:15 +01001021 mutex_init(&ctrl->crit_sect);
Kenji Kaneshiged29aadd2006-01-26 09:59:24 +09001022 mutex_init(&ctrl->cmd_lock);
1023
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024 /* Setup wait queue */
1025 init_waitqueue_head(&ctrl->queue);
1026
Kenji Kaneshige75d97c52006-05-02 11:08:42 +09001027 ctrl->hpc_ops = &shpchp_hpc_ops;
1028
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029 /* Return PCI Controller Info */
Kenji Kaneshige75d97c52006-05-02 11:08:42 +09001030 slot_config = shpc_readl(ctrl, SLOT_CONFIG);
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001031 ctrl->slot_device_offset = (slot_config & FIRST_DEV_NUM) >> 8;
1032 ctrl->num_slots = slot_config & SLOT_NUM;
1033 ctrl->first_slot = (slot_config & PSN) >> 16;
1034 ctrl->slot_num_inc = ((slot_config & UPDOWN) >> 29) ? 1 : -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035
1036 /* Mask Global Interrupt Mask & Command Complete Interrupt Mask */
Kenji Kaneshige75d97c52006-05-02 11:08:42 +09001037 tempdword = shpc_readl(ctrl, SERR_INTR_ENABLE);
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001038 dbg("%s: SERR_INTR_ENABLE = %x\n", __func__, tempdword);
Kenji Kaneshigee7138722006-05-02 11:12:37 +09001039 tempdword |= (GLOBAL_INTR_MASK | GLOBAL_SERR_MASK |
1040 COMMAND_INTR_MASK | ARBITER_SERR_MASK);
1041 tempdword &= ~SERR_INTR_RSVDZ_MASK;
Kenji Kaneshige75d97c52006-05-02 11:08:42 +09001042 shpc_writel(ctrl, SERR_INTR_ENABLE, tempdword);
1043 tempdword = shpc_readl(ctrl, SERR_INTR_ENABLE);
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001044 dbg("%s: SERR_INTR_ENABLE = %x\n", __func__, tempdword);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045
1046 /* Mask the MRL sensor SERR Mask of individual slot in
1047 * Slot SERR-INT Mask & clear all the existing event if any
1048 */
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001049 for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) {
Kenji Kaneshige2b34da72006-05-02 11:09:42 +09001050 slot_reg = shpc_readl(ctrl, SLOT_REG(hp_slot));
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001051 dbg("%s: Default Logical Slot Register %d value %x\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052 hp_slot, slot_reg);
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +09001053 slot_reg |= (PRSNT_CHANGE_INTR_MASK | ISO_PFAULT_INTR_MASK |
1054 BUTTON_PRESS_INTR_MASK | MRL_CHANGE_INTR_MASK |
1055 CON_PFAULT_INTR_MASK | MRL_CHANGE_SERR_MASK |
1056 CON_PFAULT_SERR_MASK);
1057 slot_reg &= ~SLOT_REG_RSVDZ_MASK;
1058 shpc_writel(ctrl, SLOT_REG(hp_slot), slot_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 }
Kenji Kaneshige9f593e32007-01-09 13:03:10 -08001060
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001061 if (shpchp_poll_mode) {
1062 /* Install interrupt polling timer. Start with 10 sec delay */
1063 init_timer(&ctrl->poll_timer);
1064 start_int_poll_timer(ctrl, 10);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065 } else {
1066 /* Installs the interrupt handler */
1067 rc = pci_enable_msi(pdev);
1068 if (rc) {
1069 info("Can't get msi for the hotplug controller\n");
1070 info("Use INTx for the hotplug controller\n");
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001071 }
Kenji Kaneshige9f593e32007-01-09 13:03:10 -08001072
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001073 rc = request_irq(ctrl->pci_dev->irq, shpc_isr, IRQF_SHARED,
1074 MY_NAME, (void *)ctrl);
1075 dbg("%s: request_irq %d for hpc%d (returns %d)\n",
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001076 __func__, ctrl->pci_dev->irq,
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001077 atomic_read(&shpchp_num_controllers), rc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078 if (rc) {
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001079 err("Can't get irq %d for the hotplug controller\n",
1080 ctrl->pci_dev->irq);
1081 goto abort_iounmap;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 }
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001084 dbg("%s: HPC at b:d:f:irq=0x%x:%x:%x:%x\n", __func__,
rajesh.shah@intel.com7c8942f2005-10-13 12:05:43 -07001085 pdev->bus->number, PCI_SLOT(pdev->devfn),
1086 PCI_FUNC(pdev->devfn), pdev->irq);
rajesh.shah@intel.com424600f2005-10-13 12:05:38 -07001087 get_hp_hw_control_from_firmware(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +09001089 /*
Kenji Kaneshige82d5f4a2006-05-03 23:42:04 +09001090 * If this is the first controller to be initialized,
1091 * initialize the shpchpd work queue
1092 */
1093 if (atomic_add_return(1, &shpchp_num_controllers) == 1) {
1094 shpchp_wq = create_singlethread_workqueue("shpchpd");
Amol Lad662a98f2006-10-05 12:07:32 +05301095 if (!shpchp_wq) {
1096 rc = -ENOMEM;
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001097 goto abort_iounmap;
Amol Lad662a98f2006-10-05 12:07:32 +05301098 }
Kenji Kaneshige82d5f4a2006-05-03 23:42:04 +09001099 }
1100
1101 /*
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +09001102 * Unmask all event interrupts of all slots
1103 */
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001104 for (hp_slot = 0; hp_slot < ctrl->num_slots; hp_slot++) {
Kenji Kaneshige2b34da72006-05-02 11:09:42 +09001105 slot_reg = shpc_readl(ctrl, SLOT_REG(hp_slot));
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001106 dbg("%s: Default Logical Slot Register %d value %x\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107 hp_slot, slot_reg);
Kenji Kaneshige795eb5c2006-05-02 11:11:54 +09001108 slot_reg &= ~(PRSNT_CHANGE_INTR_MASK | ISO_PFAULT_INTR_MASK |
1109 BUTTON_PRESS_INTR_MASK | MRL_CHANGE_INTR_MASK |
1110 CON_PFAULT_INTR_MASK | SLOT_REG_RSVDZ_MASK);
1111 shpc_writel(ctrl, SLOT_REG(hp_slot), slot_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112 }
1113 if (!shpchp_poll_mode) {
1114 /* Unmask all general input interrupts and SERR */
Kenji Kaneshige75d97c52006-05-02 11:08:42 +09001115 tempdword = shpc_readl(ctrl, SERR_INTR_ENABLE);
Kenji Kaneshigee7138722006-05-02 11:12:37 +09001116 tempdword &= ~(GLOBAL_INTR_MASK | COMMAND_INTR_MASK |
1117 SERR_INTR_RSVDZ_MASK);
Kenji Kaneshige75d97c52006-05-02 11:08:42 +09001118 shpc_writel(ctrl, SERR_INTR_ENABLE, tempdword);
1119 tempdword = shpc_readl(ctrl, SERR_INTR_ENABLE);
Harvey Harrison66bef8c2008-03-03 19:09:46 -08001120 dbg("%s: SERR_INTR_ENABLE = %x\n", __func__, tempdword);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 }
1122
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123 return 0;
1124
1125 /* We end up here for the many possible ways to fail this API. */
Kenji Kaneshige0abe68c2006-12-16 15:25:34 -08001126abort_iounmap:
1127 iounmap(ctrl->creg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128abort:
Amol Lad662a98f2006-10-05 12:07:32 +05301129 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130}