[deliverable/linux.git] / arch / arm / mach-msm / smd_debug.c

/* arch/arm/mach-msm/smd_debug.c
 *
 * Copyright (C) 2007 Google, Inc.
 * Author: Brian Swetland <swetland@google.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/debugfs.h>
#include <linux/list.h>

#include <mach/msm_iomap.h>

#include "smd_private.h"

#if defined(CONFIG_DEBUG_FS)

static char *chstate(unsigned n)
{
	switch (n) {
	case SMD_SS_CLOSED:
		return "CLOSED";
	case SMD_SS_OPENING:
		return "OPENING";
	case SMD_SS_OPENED:
		return "OPENED";
	case SMD_SS_FLUSHING:
		return "FLUSHING";
	case SMD_SS_CLOSING:
		return "CLOSING";
	case SMD_SS_RESET:
		return "RESET";
	case SMD_SS_RESET_OPENING:
		return "ROPENING";
	default:
		return "UNKNOWN";
	}
}


static int dump_ch(char *buf, int max, struct smd_channel *ch)
{
	volatile struct smd_half_channel *s = ch->send;
	volatile struct smd_half_channel *r = ch->recv;

	return scnprintf(
		buf, max,
		"ch%02d:"
		" %8s(%05d/%05d) %c%c%c%c%c%c%c <->"
		" %8s(%05d/%05d) %c%c%c%c%c%c%c '%s'\n", ch->n,
		chstate(s->state), s->tail, s->head,
		s->fDSR ? 'D' : 'd',
		s->fCTS ? 'C' : 'c',
		s->fCD ? 'C' : 'c',
		s->fRI ? 'I' : 'i',
		s->fHEAD ? 'W' : 'w',
		s->fTAIL ? 'R' : 'r',
		s->fSTATE ? 'S' : 's',
		chstate(r->state), r->tail, r->head,
		r->fDSR ? 'D' : 'd',
		r->fCTS ? 'R' : 'r',
		r->fCD ? 'C' : 'c',
		r->fRI ? 'I' : 'i',
		r->fHEAD ? 'W' : 'w',
		r->fTAIL ? 'R' : 'r',
		r->fSTATE ? 'S' : 's',
		ch->name
		);
}

static int debug_read_stat(char *buf, int max)
{
	char *msg;
	int i = 0;

	msg = smem_find(ID_DIAG_ERR_MSG, SZ_DIAG_ERR_MSG);

	if (raw_smsm_get_state(SMSM_STATE_MODEM) & SMSM_RESET)
		i += scnprintf(buf + i, max - i,
			       "smsm: ARM9 HAS CRASHED\n");

	i += scnprintf(buf + i, max - i, "smsm: a9: %08x a11: %08x\n",
		       raw_smsm_get_state(SMSM_STATE_MODEM),
		       raw_smsm_get_state(SMSM_STATE_APPS));
#ifdef CONFIG_ARCH_MSM_SCORPION
	i += scnprintf(buf + i, max - i, "smsm dem: apps: %08x modem: %08x "
		       "qdsp6: %08x power: %08x time: %08x\n",
		       raw_smsm_get_state(SMSM_STATE_APPS_DEM),
		       raw_smsm_get_state(SMSM_STATE_MODEM_DEM),
		       raw_smsm_get_state(SMSM_STATE_QDSP6_DEM),
		       raw_smsm_get_state(SMSM_STATE_POWER_MASTER_DEM),
		       raw_smsm_get_state(SMSM_STATE_TIME_MASTER_DEM));
#endif
	if (msg) {
		msg[SZ_DIAG_ERR_MSG - 1] = 0;
		i += scnprintf(buf + i, max - i, "diag: '%s'\n", msg);
	}
	return i;
}

static int debug_read_mem(char *buf, int max)
{
	unsigned n;
	struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
	struct smem_heap_entry *toc = shared->heap_toc;
	int i = 0;

	i += scnprintf(buf + i, max - i,
		       "heap: init=%d free=%d remain=%d\n",
		       shared->heap_info.initialized,
		       shared->heap_info.free_offset,
		       shared->heap_info.heap_remaining);

	for (n = 0; n < SMEM_NUM_ITEMS; n++) {
		if (toc[n].allocated == 0)
			continue;
		i += scnprintf(buf + i, max - i,
			       "%04d: offset %08x size %08x\n",
			       n, toc[n].offset, toc[n].size);
	}
	return i;
}

static int debug_read_ch(char *buf, int max)
{
	struct smd_channel *ch;
	unsigned long flags;
	int i = 0;

	spin_lock_irqsave(&smd_lock, flags);
	list_for_each_entry(ch, &smd_ch_list_dsp, ch_list)
		i += dump_ch(buf + i, max - i, ch);
	list_for_each_entry(ch, &smd_ch_list_modem, ch_list)
		i += dump_ch(buf + i, max - i, ch);
	list_for_each_entry(ch, &smd_ch_closed_list, ch_list)
		i += dump_ch(buf + i, max - i, ch);
	spin_unlock_irqrestore(&smd_lock, flags);

	return i;
}

static int debug_read_version(char *buf, int max)
{
	struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
	unsigned version = shared->version[VERSION_MODEM];
	return sprintf(buf, "%d.%d\n", version >> 16, version & 0xffff);
}

static int debug_read_build_id(char *buf, int max)
{
	unsigned size;
	void *data;

	data = smem_item(SMEM_HW_SW_BUILD_ID, &size);
	if (!data)
		return 0;

	if (size >= max)
		size = max;
	memcpy(buf, data, size);

	return size;
}

static int debug_read_alloc_tbl(char *buf, int max)
{
	struct smd_alloc_elm *shared;
	int n, i = 0;

	shared = smem_find(ID_CH_ALLOC_TBL, sizeof(*shared) * 64);

	for (n = 0; n < 64; n++) {
		if (shared[n].ref_count == 0)
			continue;
		i += scnprintf(buf + i, max - i,
			       "%03d: %-20s cid=%02d type=%03d "
			       "kind=%02d ref_count=%d\n",
			       n, shared[n].name, shared[n].cid,
			       shared[n].ctype & 0xff,
			       (shared[n].ctype >> 8) & 0xf,
			       shared[n].ref_count);
	}

	return i;
}

#define DEBUG_BUFMAX 4096
static char debug_buffer[DEBUG_BUFMAX];

static ssize_t debug_read(struct file *file, char __user *buf,
			  size_t count, loff_t *ppos)
{
	int (*fill)(char *buf, int max) = file->private_data;
	int bsize = fill(debug_buffer, DEBUG_BUFMAX);
	return simple_read_from_buffer(buf, count, ppos, debug_buffer, bsize);
}

static const struct file_operations debug_ops = {
	.read = debug_read,
	.open = simple_open,
	.llseek = default_llseek,
};

static void debug_create(const char *name, umode_t mode,
			 struct dentry *dent,
			 int (*fill)(char *buf, int max))
{
	debugfs_create_file(name, mode, dent, fill, &debug_ops);
}

int __init smd_debugfs_init(void)
{
	struct dentry *dent;

	dent = debugfs_create_dir("smd", 0);
	if (IS_ERR(dent))
		return 1;

	debug_create("ch", 0444, dent, debug_read_ch);
	debug_create("stat", 0444, dent, debug_read_stat);
	debug_create("mem", 0444, dent, debug_read_mem);
	debug_create("version", 0444, dent, debug_read_version);
	debug_create("tbl", 0444, dent, debug_read_alloc_tbl);
	debug_create("build", 0444, dent, debug_read_build_id);

	return 0;
}

#endif


#define MAX_NUM_SLEEP_CLIENTS		64
#define MAX_SLEEP_NAME_LEN		8

#define NUM_GPIO_INT_REGISTERS		6
#define GPIO_SMEM_NUM_GROUPS		2
#define GPIO_SMEM_MAX_PC_INTERRUPTS	8

struct tramp_gpio_save {
	unsigned int enable;
	unsigned int detect;
	unsigned int polarity;
};

struct tramp_gpio_smem {
	uint16_t num_fired[GPIO_SMEM_NUM_GROUPS];
	uint16_t fired[GPIO_SMEM_NUM_GROUPS][GPIO_SMEM_MAX_PC_INTERRUPTS];
	uint32_t enabled[NUM_GPIO_INT_REGISTERS];
	uint32_t detection[NUM_GPIO_INT_REGISTERS];
	uint32_t polarity[NUM_GPIO_INT_REGISTERS];
};


void smsm_print_sleep_info(void)
{
	unsigned long flags;
	uint32_t *ptr;
#ifndef CONFIG_ARCH_MSM_SCORPION
	struct tramp_gpio_smem *gpio;
	struct smsm_interrupt_info *int_info;
#endif


	spin_lock_irqsave(&smem_lock, flags);

	ptr = smem_alloc(SMEM_SMSM_SLEEP_DELAY, sizeof(*ptr));
	if (ptr)
		pr_info("SMEM_SMSM_SLEEP_DELAY: %x\n", *ptr);

	ptr = smem_alloc(SMEM_SMSM_LIMIT_SLEEP, sizeof(*ptr));
	if (ptr)
		pr_info("SMEM_SMSM_LIMIT_SLEEP: %x\n", *ptr);

	ptr = smem_alloc(SMEM_SLEEP_POWER_COLLAPSE_DISABLED, sizeof(*ptr));
	if (ptr)
		pr_info("SMEM_SLEEP_POWER_COLLAPSE_DISABLED: %x\n", *ptr);

#ifndef CONFIG_ARCH_MSM_SCORPION
	int_info = smem_alloc(SMEM_SMSM_INT_INFO, sizeof(*int_info));
	if (int_info)
		pr_info("SMEM_SMSM_INT_INFO %x %x %x\n",
			int_info->interrupt_mask,
			int_info->pending_interrupts,
			int_info->wakeup_reason);

	gpio = smem_alloc(SMEM_GPIO_INT, sizeof(*gpio));
	if (gpio) {
		int i;
		for (i = 0; i < NUM_GPIO_INT_REGISTERS; i++)
			pr_info("SMEM_GPIO_INT: %d: e %x d %x p %x\n",
				i, gpio->enabled[i], gpio->detection[i],
				gpio->polarity[i]);

		for (i = 0; i < GPIO_SMEM_NUM_GROUPS; i++)
			pr_info("SMEM_GPIO_INT: %d: f %d: %d %d...\n",
				i, gpio->num_fired[i], gpio->fired[i][0],
				gpio->fired[i][1]);
	}
#else
#endif
	spin_unlock_irqrestore(&smem_lock, flags);
}
Commit	Line	Data
03e00cd3 BS	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 <->"
37521a31	58	" %8s(%05d/%05d) %c%c%c%c%c%c%c '%s'\n", ch->n,
03e00cd3 BS	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',
37521a31 BS	74	r->fSTATE ? 'S' : 's',
37521a31 BS	75	ch->name
03e00cd3 BS	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);
37521a31 BS	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)
03e00cd3 BS	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
03e00cd3 BS	206	static const struct file_operations debug_ops = {
03e00cd3 BS	207	.read = debug_read,
234e3405	208	.open = simple_open,
6038f373	209	.llseek = default_llseek,
03e00cd3 BS	210	};
03e00cd3 BS	211
f4ae40a6	212	static void debug_create(const char *name, umode_t mode,
03e00cd3 BS	213	struct dentry *dent,
	214	int (fill)(char buf, int max))
	215	{
	216	debugfs_create_file(name, mode, dent, fill, &debug_ops);
	217	}
	218
c633c531	219	int __init smd_debugfs_init(void)
03e00cd3 BS	220	{
	221	struct dentry *dent;
	222
	223	dent = debugfs_create_dir("smd", 0);
	224	if (IS_ERR(dent))
869a2a09	225	return 1;
03e00cd3 BS	226
	227	debug_create("ch", 0444, dent, debug_read_ch);
	228	debug_create("stat", 0444, dent, debug_read_stat);
	229	debug_create("mem", 0444, dent, debug_read_mem);
	230	debug_create("version", 0444, dent, debug_read_version);
	231	debug_create("tbl", 0444, dent, debug_read_alloc_tbl);
	232	debug_create("build", 0444, dent, debug_read_build_id);
869a2a09 DW	233
869a2a09 DW	234	return 0;
03e00cd3 BS	235	}
03e00cd3 BS	236
03e00cd3 BS	237	#endif
	238
	239
	240	#define MAX_NUM_SLEEP_CLIENTS 64
	241	#define MAX_SLEEP_NAME_LEN 8
	242
	243	#define NUM_GPIO_INT_REGISTERS 6
	244	#define GPIO_SMEM_NUM_GROUPS 2
	245	#define GPIO_SMEM_MAX_PC_INTERRUPTS 8
	246
	247	struct tramp_gpio_save {
	248	unsigned int enable;
	249	unsigned int detect;
	250	unsigned int polarity;
	251	};
	252
	253	struct tramp_gpio_smem {
	254	uint16_t num_fired[GPIO_SMEM_NUM_GROUPS];
	255	uint16_t fired[GPIO_SMEM_NUM_GROUPS][GPIO_SMEM_MAX_PC_INTERRUPTS];
	256	uint32_t enabled[NUM_GPIO_INT_REGISTERS];
	257	uint32_t detection[NUM_GPIO_INT_REGISTERS];
	258	uint32_t polarity[NUM_GPIO_INT_REGISTERS];
	259	};
	260
	261
	262	void smsm_print_sleep_info(void)
	263	{
	264	unsigned long flags;
	265	uint32_t *ptr;
d2c5d214	266	#ifndef CONFIG_ARCH_MSM_SCORPION
03e00cd3 BS	267	struct tramp_gpio_smem *gpio;
03e00cd3 BS	268	struct smsm_interrupt_info *int_info;
d2c5d214	269	#endif
03e00cd3 BS	270
	271
	272	spin_lock_irqsave(&smem_lock, flags);
	273
	274	ptr = smem_alloc(SMEM_SMSM_SLEEP_DELAY, sizeof(*ptr));
	275	if (ptr)
	276	pr_info("SMEM_SMSM_SLEEP_DELAY: %x\n", *ptr);
	277
	278	ptr = smem_alloc(SMEM_SMSM_LIMIT_SLEEP, sizeof(*ptr));
	279	if (ptr)
	280	pr_info("SMEM_SMSM_LIMIT_SLEEP: %x\n", *ptr);
	281
	282	ptr = smem_alloc(SMEM_SLEEP_POWER_COLLAPSE_DISABLED, sizeof(*ptr));
	283	if (ptr)
	284	pr_info("SMEM_SLEEP_POWER_COLLAPSE_DISABLED: %x\n", *ptr);
	285
	286	#ifndef CONFIG_ARCH_MSM_SCORPION
	287	int_info = smem_alloc(SMEM_SMSM_INT_INFO, sizeof(*int_info));
	288	if (int_info)
	289	pr_info("SMEM_SMSM_INT_INFO %x %x %x\n",
	290	int_info->interrupt_mask,
	291	int_info->pending_interrupts,
	292	int_info->wakeup_reason);
	293
	294	gpio = smem_alloc(SMEM_GPIO_INT, sizeof(*gpio));
	295	if (gpio) {
	296	int i;
	297	for (i = 0; i < NUM_GPIO_INT_REGISTERS; i++)
	298	pr_info("SMEM_GPIO_INT: %d: e %x d %x p %x\n",
	299	i, gpio->enabled[i], gpio->detection[i],
	300	gpio->polarity[i]);
	301
	302	for (i = 0; i < GPIO_SMEM_NUM_GROUPS; i++)
	303	pr_info("SMEM_GPIO_INT: %d: f %d: %d %d...\n",
	304	i, gpio->num_fired[i], gpio->fired[i][0],
	305	gpio->fired[i][1]);
	306	}
	307	#else
	308	#endif
	309	spin_unlock_irqrestore(&smem_lock, flags);
	310	}
	311