Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
[pandora-kernel.git] / arch / arm / mach-msm / smd_debug.c
1 /* arch/arm/mach-msm/smd_debug.c
2  *
3  * Copyright (C) 2007 Google, Inc.
4  * Author: Brian Swetland <swetland@google.com>
5  *
6  * This software is licensed under the terms of the GNU General Public
7  * License version 2, as published by the Free Software Foundation, and
8  * may be copied, distributed, and modified under those terms.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  */
16
17 #include <linux/debugfs.h>
18 #include <linux/list.h>
19
20 #include <mach/msm_iomap.h>
21
22 #include "smd_private.h"
23
24 #if defined(CONFIG_DEBUG_FS)
25
26 static char *chstate(unsigned n)
27 {
28         switch (n) {
29         case SMD_SS_CLOSED:
30                 return "CLOSED";
31         case SMD_SS_OPENING:
32                 return "OPENING";
33         case SMD_SS_OPENED:
34                 return "OPENED";
35         case SMD_SS_FLUSHING:
36                 return "FLUSHING";
37         case SMD_SS_CLOSING:
38                 return "CLOSING";
39         case SMD_SS_RESET:
40                 return "RESET";
41         case SMD_SS_RESET_OPENING:
42                 return "ROPENING";
43         default:
44                 return "UNKNOWN";
45         }
46 }
47
48
49 static int dump_ch(char *buf, int max, struct smd_channel *ch)
50 {
51         volatile struct smd_half_channel *s = ch->send;
52         volatile struct smd_half_channel *r = ch->recv;
53
54         return scnprintf(
55                 buf, max,
56                 "ch%02d:"
57                 " %8s(%05d/%05d) %c%c%c%c%c%c%c <->"
58                 " %8s(%05d/%05d) %c%c%c%c%c%c%c '%s'\n", ch->n,
59                 chstate(s->state), s->tail, s->head,
60                 s->fDSR ? 'D' : 'd',
61                 s->fCTS ? 'C' : 'c',
62                 s->fCD ? 'C' : 'c',
63                 s->fRI ? 'I' : 'i',
64                 s->fHEAD ? 'W' : 'w',
65                 s->fTAIL ? 'R' : 'r',
66                 s->fSTATE ? 'S' : 's',
67                 chstate(r->state), r->tail, r->head,
68                 r->fDSR ? 'D' : 'd',
69                 r->fCTS ? 'R' : 'r',
70                 r->fCD ? 'C' : 'c',
71                 r->fRI ? 'I' : 'i',
72                 r->fHEAD ? 'W' : 'w',
73                 r->fTAIL ? 'R' : 'r',
74                 r->fSTATE ? 'S' : 's',
75                 ch->name
76                 );
77 }
78
79 static int debug_read_stat(char *buf, int max)
80 {
81         char *msg;
82         int i = 0;
83
84         msg = smem_find(ID_DIAG_ERR_MSG, SZ_DIAG_ERR_MSG);
85
86         if (raw_smsm_get_state(SMSM_STATE_MODEM) & SMSM_RESET)
87                 i += scnprintf(buf + i, max - i,
88                                "smsm: ARM9 HAS CRASHED\n");
89
90         i += scnprintf(buf + i, max - i, "smsm: a9: %08x a11: %08x\n",
91                        raw_smsm_get_state(SMSM_STATE_MODEM),
92                        raw_smsm_get_state(SMSM_STATE_APPS));
93 #ifdef CONFIG_ARCH_MSM_SCORPION
94         i += scnprintf(buf + i, max - i, "smsm dem: apps: %08x modem: %08x "
95                        "qdsp6: %08x power: %08x time: %08x\n",
96                        raw_smsm_get_state(SMSM_STATE_APPS_DEM),
97                        raw_smsm_get_state(SMSM_STATE_MODEM_DEM),
98                        raw_smsm_get_state(SMSM_STATE_QDSP6_DEM),
99                        raw_smsm_get_state(SMSM_STATE_POWER_MASTER_DEM),
100                        raw_smsm_get_state(SMSM_STATE_TIME_MASTER_DEM));
101 #endif
102         if (msg) {
103                 msg[SZ_DIAG_ERR_MSG - 1] = 0;
104                 i += scnprintf(buf + i, max - i, "diag: '%s'\n", msg);
105         }
106         return i;
107 }
108
109 static int debug_read_mem(char *buf, int max)
110 {
111         unsigned n;
112         struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
113         struct smem_heap_entry *toc = shared->heap_toc;
114         int i = 0;
115
116         i += scnprintf(buf + i, max - i,
117                        "heap: init=%d free=%d remain=%d\n",
118                        shared->heap_info.initialized,
119                        shared->heap_info.free_offset,
120                        shared->heap_info.heap_remaining);
121
122         for (n = 0; n < SMEM_NUM_ITEMS; n++) {
123                 if (toc[n].allocated == 0)
124                         continue;
125                 i += scnprintf(buf + i, max - i,
126                                "%04d: offset %08x size %08x\n",
127                                n, toc[n].offset, toc[n].size);
128         }
129         return i;
130 }
131
132 static int debug_read_ch(char *buf, int max)
133 {
134         struct smd_channel *ch;
135         unsigned long flags;
136         int i = 0;
137
138         spin_lock_irqsave(&smd_lock, flags);
139         list_for_each_entry(ch, &smd_ch_list_dsp, ch_list)
140                 i += dump_ch(buf + i, max - i, ch);
141         list_for_each_entry(ch, &smd_ch_list_modem, ch_list)
142                 i += dump_ch(buf + i, max - i, ch);
143         list_for_each_entry(ch, &smd_ch_closed_list, ch_list)
144                 i += dump_ch(buf + i, max - i, ch);
145         spin_unlock_irqrestore(&smd_lock, flags);
146
147         return i;
148 }
149
150 static int debug_read_version(char *buf, int max)
151 {
152         struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
153         unsigned version = shared->version[VERSION_MODEM];
154         return sprintf(buf, "%d.%d\n", version >> 16, version & 0xffff);
155 }
156
157 static int debug_read_build_id(char *buf, int max)
158 {
159         unsigned size;
160         void *data;
161
162         data = smem_item(SMEM_HW_SW_BUILD_ID, &size);
163         if (!data)
164                 return 0;
165
166         if (size >= max)
167                 size = max;
168         memcpy(buf, data, size);
169
170         return size;
171 }
172
173 static int debug_read_alloc_tbl(char *buf, int max)
174 {
175         struct smd_alloc_elm *shared;
176         int n, i = 0;
177
178         shared = smem_find(ID_CH_ALLOC_TBL, sizeof(*shared) * 64);
179
180         for (n = 0; n < 64; n++) {
181                 if (shared[n].ref_count == 0)
182                         continue;
183                 i += scnprintf(buf + i, max - i,
184                                "%03d: %-20s cid=%02d type=%03d "
185                                "kind=%02d ref_count=%d\n",
186                                n, shared[n].name, shared[n].cid,
187                                shared[n].ctype & 0xff,
188                                (shared[n].ctype >> 8) & 0xf,
189                                shared[n].ref_count);
190         }
191
192         return i;
193 }
194
195 #define DEBUG_BUFMAX 4096
196 static char debug_buffer[DEBUG_BUFMAX];
197
198 static ssize_t debug_read(struct file *file, char __user *buf,
199                           size_t count, loff_t *ppos)
200 {
201         int (*fill)(char *buf, int max) = file->private_data;
202         int bsize = fill(debug_buffer, DEBUG_BUFMAX);
203         return simple_read_from_buffer(buf, count, ppos, debug_buffer, bsize);
204 }
205
206 static int debug_open(struct inode *inode, struct file *file)
207 {
208         file->private_data = inode->i_private;
209         return 0;
210 }
211
212 static const struct file_operations debug_ops = {
213         .read = debug_read,
214         .open = debug_open,
215         .llseek = default_llseek,
216 };
217
218 static void debug_create(const char *name, mode_t mode,
219                          struct dentry *dent,
220                          int (*fill)(char *buf, int max))
221 {
222         debugfs_create_file(name, mode, dent, fill, &debug_ops);
223 }
224
225 static int smd_debugfs_init(void)
226 {
227         struct dentry *dent;
228
229         dent = debugfs_create_dir("smd", 0);
230         if (IS_ERR(dent))
231                 return 1;
232
233         debug_create("ch", 0444, dent, debug_read_ch);
234         debug_create("stat", 0444, dent, debug_read_stat);
235         debug_create("mem", 0444, dent, debug_read_mem);
236         debug_create("version", 0444, dent, debug_read_version);
237         debug_create("tbl", 0444, dent, debug_read_alloc_tbl);
238         debug_create("build", 0444, dent, debug_read_build_id);
239
240         return 0;
241 }
242
243 late_initcall(smd_debugfs_init);
244 #endif
245
246
247 #define MAX_NUM_SLEEP_CLIENTS           64
248 #define MAX_SLEEP_NAME_LEN              8
249
250 #define NUM_GPIO_INT_REGISTERS          6
251 #define GPIO_SMEM_NUM_GROUPS            2
252 #define GPIO_SMEM_MAX_PC_INTERRUPTS     8
253
254 struct tramp_gpio_save {
255         unsigned int enable;
256         unsigned int detect;
257         unsigned int polarity;
258 };
259
260 struct tramp_gpio_smem {
261         uint16_t num_fired[GPIO_SMEM_NUM_GROUPS];
262         uint16_t fired[GPIO_SMEM_NUM_GROUPS][GPIO_SMEM_MAX_PC_INTERRUPTS];
263         uint32_t enabled[NUM_GPIO_INT_REGISTERS];
264         uint32_t detection[NUM_GPIO_INT_REGISTERS];
265         uint32_t polarity[NUM_GPIO_INT_REGISTERS];
266 };
267
268
269 void smsm_print_sleep_info(void)
270 {
271         unsigned long flags;
272         uint32_t *ptr;
273 #ifndef CONFIG_ARCH_MSM_SCORPION
274         struct tramp_gpio_smem *gpio;
275         struct smsm_interrupt_info *int_info;
276 #endif
277
278
279         spin_lock_irqsave(&smem_lock, flags);
280
281         ptr = smem_alloc(SMEM_SMSM_SLEEP_DELAY, sizeof(*ptr));
282         if (ptr)
283                 pr_info("SMEM_SMSM_SLEEP_DELAY: %x\n", *ptr);
284
285         ptr = smem_alloc(SMEM_SMSM_LIMIT_SLEEP, sizeof(*ptr));
286         if (ptr)
287                 pr_info("SMEM_SMSM_LIMIT_SLEEP: %x\n", *ptr);
288
289         ptr = smem_alloc(SMEM_SLEEP_POWER_COLLAPSE_DISABLED, sizeof(*ptr));
290         if (ptr)
291                 pr_info("SMEM_SLEEP_POWER_COLLAPSE_DISABLED: %x\n", *ptr);
292
293 #ifndef CONFIG_ARCH_MSM_SCORPION
294         int_info = smem_alloc(SMEM_SMSM_INT_INFO, sizeof(*int_info));
295         if (int_info)
296                 pr_info("SMEM_SMSM_INT_INFO %x %x %x\n",
297                         int_info->interrupt_mask,
298                         int_info->pending_interrupts,
299                         int_info->wakeup_reason);
300
301         gpio = smem_alloc(SMEM_GPIO_INT, sizeof(*gpio));
302         if (gpio) {
303                 int i;
304                 for (i = 0; i < NUM_GPIO_INT_REGISTERS; i++)
305                         pr_info("SMEM_GPIO_INT: %d: e %x d %x p %x\n",
306                                 i, gpio->enabled[i], gpio->detection[i],
307                                 gpio->polarity[i]);
308
309                 for (i = 0; i < GPIO_SMEM_NUM_GROUPS; i++)
310                         pr_info("SMEM_GPIO_INT: %d: f %d: %d %d...\n",
311                                 i, gpio->num_fired[i], gpio->fired[i][0],
312                                 gpio->fired[i][1]);
313         }
314 #else
315 #endif
316         spin_unlock_irqrestore(&smem_lock, flags);
317 }
318