C++ scnprintf函数代码示例

/*
 * msm_rpm_log_copy() - Copies messages from a volatile circular buffer in
 *			the RPM's shared memory into a private local buffer
 * msg_buffer:		pointer to local buffer (string)
 * buf_len:		length of local buffer in bytes
 * read_start_idx:	index into shared memory buffer
 *
 * Return value:	number of bytes written to the local buffer
 *
 * Copies messages stored in a circular buffer in the RPM Message Memory into
 * a specified local buffer.  The RPM processor is unaware of these reading
 * efforts, so care is taken to make sure that messages are valid both before
 * and after reading.  The RPM processor utilizes a ULog driver to write the
 * log.  The RPM processor maintains tail and head indices.  These correspond
 * to the next byte to write into, and the first valid byte, respectively.
 * Both indices increase monotonically (except for rollover).
 *
 * Messages take the form of [(u32)length] [(char)data0,1,...] in which the
 * length specifies the number of payload bytes.  Messages must be 4 byte
 * aligned, so padding is added at the end of a message as needed.
 *
 * Print format:
 * - 0xXX, 0xXX, 0xXX
 * - 0xXX
 * etc...
 */
static u32 msm_rpm_log_copy(const struct msm_rpm_log_platform_data *pdata,
			    char *msg_buffer, u32 buf_len, u32 *read_idx)
{
	u32 head_idx, tail_idx;
	u32 pos = 0;
	u32 i = 0;
	u32 msg_len;
	u32 pos_start;
	char temp[4];

	tail_idx = msm_rpm_log_read(pdata, MSM_RPM_LOG_PAGE_INDICES,
				    MSM_RPM_LOG_TAIL);
	head_idx = msm_rpm_log_read(pdata, MSM_RPM_LOG_PAGE_INDICES,
				    MSM_RPM_LOG_HEAD);

	
	while (tail_idx - head_idx > 0 && tail_idx - *read_idx > 0) {
		head_idx = msm_rpm_log_read(pdata, MSM_RPM_LOG_PAGE_INDICES,
					    MSM_RPM_LOG_HEAD);
		
		if (tail_idx - *read_idx > tail_idx - head_idx) {
			*read_idx = head_idx;
			continue;
		}
		if (tail_idx - head_idx > pdata->log_len ||
		    !IS_ALIGNED((tail_idx | head_idx | *read_idx), 4))
			break;

		msg_len = msm_rpm_log_read(pdata, MSM_RPM_LOG_PAGE_BUFFER,
					(*read_idx >> 2) & pdata->log_len_mask);

		
		if (PADDED_LENGTH(msg_len) > tail_idx - *read_idx - 4)
			msg_len = tail_idx - *read_idx - 4;

		
		if (pos + PRINTED_LENGTH(msg_len) > buf_len)
			break;

		pos_start = pos;
		pos += scnprintf(msg_buffer + pos, buf_len - pos, "- ");

		
		for (i = 0; i < msg_len; i++) {
			
			if (IS_ALIGNED(i, 4))
				*((u32 *)temp) = msm_rpm_log_read(pdata,
						MSM_RPM_LOG_PAGE_BUFFER,
						((*read_idx + 4 + i) >> 2) &
							pdata->log_len_mask);

			pos += scnprintf(msg_buffer + pos, buf_len - pos,
					 "0x%02X, ", temp[i & 0x03]);
		}

		pos += scnprintf(msg_buffer + pos, buf_len - pos, "\n");

		head_idx = msm_rpm_log_read(pdata, MSM_RPM_LOG_PAGE_INDICES,
					    MSM_RPM_LOG_HEAD);

		
		if (tail_idx - *read_idx > tail_idx - head_idx)
			pos = pos_start;

		*read_idx += PADDED_LENGTH(msg_len) + 4;
	}

	return pos;
}

/*
 * There's very little reason to use this, you should really
 * have a struct block_device just about everywhere and use
 * bdevname() instead.
 */
const char *__bdevname(dev_t dev, char *buffer)
{
	scnprintf(buffer, BDEVNAME_SIZE, "unknown-block(%u,%u)",
				MAJOR(dev), MINOR(dev));
	return buffer;
}

static ssize_t qos_if_dls_mac(const struct ieee80211_sub_if_data *sdata,
			      char *buf, int buflen)
{
	return scnprintf(buf, buflen, MAC_FMT "\n",
			 MAC_ARG(sdata->u.sta.dls_mac));
}

static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
			      struct ins_operands *ops)
{
	return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
}

static ssize_t acpi_pad_idlepct_show(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	return scnprintf(buf, PAGE_SIZE, "%d\n", idle_pct);
}

static ssize_t
il_dbgfs_interrupt_read(struct file *file, char __user *user_buf, size_t count,
			loff_t *ppos)
{

	struct il_priv *il = file->private_data;
	int pos = 0;
	int cnt = 0;
	char *buf;
	int bufsz = 24 * 64;	/* 24 items * 64 char per item */
	ssize_t ret;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf) {
		IL_ERR("Can not allocate Buffer\n");
		return -ENOMEM;
	}

	pos +=
	    scnprintf(buf + pos, bufsz - pos, "Interrupt Statistics Report:\n");

	pos +=
	    scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
		      il->isr_stats.hw);
	pos +=
	    scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
		      il->isr_stats.sw);
	if (il->isr_stats.sw || il->isr_stats.hw) {
		pos +=
		    scnprintf(buf + pos, bufsz - pos,
			      "\tLast Restarting Code:  0x%X\n",
			      il->isr_stats.err_code);
	}
#ifdef CONFIG_IWLEGACY_DEBUG
	pos +=
	    scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
		      il->isr_stats.sch);
	pos +=
	    scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
		      il->isr_stats.alive);
#endif
	pos +=
	    scnprintf(buf + pos, bufsz - pos,
		      "HW RF KILL switch toggled:\t %u\n",
		      il->isr_stats.rfkill);

	pos +=
	    scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
		      il->isr_stats.ctkill);

	pos +=
	    scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
		      il->isr_stats.wakeup);

	pos +=
	    scnprintf(buf + pos, bufsz - pos, "Rx command responses:\t\t %u\n",
		      il->isr_stats.rx);
	for (cnt = 0; cnt < IL_CN_MAX; cnt++) {
		if (il->isr_stats.handlers[cnt] > 0)
			pos +=
			    scnprintf(buf + pos, bufsz - pos,
				      "\tRx handler[%36s]:\t\t %u\n",
				      il_get_cmd_string(cnt),
				      il->isr_stats.handlers[cnt]);
	}

	pos +=
	    scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
		      il->isr_stats.tx);

	pos +=
	    scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
		      il->isr_stats.unhandled);

	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
}

int
p9_printfcall(char *buf, int buflen, struct p9_fcall *fc, int extended)
{
    int i, ret, type, tag;

    if (!fc)
        return scnprintf(buf, buflen, "<NULL>");

    type = fc->id;
    tag = fc->tag;

    ret = 0;
    switch (type) {
    case P9_TVERSION:
        ret += scnprintf(buf+ret, buflen-ret,
                "Tversion tag %u msize %u version '%.*s'", tag,
                fc->params.tversion.msize,
                fc->params.tversion.version.len,
                fc->params.tversion.version.str);
        break;

    case P9_RVERSION:
        ret += scnprintf(buf+ret, buflen-ret,
                "Rversion tag %u msize %u version '%.*s'", tag,
                fc->params.rversion.msize,
                fc->params.rversion.version.len,
                fc->params.rversion.version.str);
        break;

    case P9_TAUTH:
        ret += scnprintf(buf+ret, buflen-ret,
            "Tauth tag %u afid %d uname '%.*s' aname '%.*s'", tag,
            fc->params.tauth.afid, fc->params.tauth.uname.len,
            fc->params.tauth.uname.str, fc->params.tauth.aname.len,
            fc->params.tauth.aname.str);
        break;

    case P9_RAUTH:
        ret += scnprintf(buf+ret, buflen-ret, "Rauth tag %u qid ", tag);
        p9_printqid(buf+ret, buflen-ret, &fc->params.rauth.qid);
        break;

    case P9_TATTACH:
        ret += scnprintf(buf+ret, buflen-ret,
         "Tattach tag %u fid %d afid %d uname '%.*s' aname '%.*s'", tag,
         fc->params.tattach.fid, fc->params.tattach.afid,
         fc->params.tattach.uname.len, fc->params.tattach.uname.str,
         fc->params.tattach.aname.len, fc->params.tattach.aname.str);
        break;

    case P9_RATTACH:
        ret += scnprintf(buf+ret, buflen-ret, "Rattach tag %u qid ",
                                    tag);
        p9_printqid(buf+ret, buflen-ret, &fc->params.rattach.qid);
        break;

    case P9_RERROR:
        ret += scnprintf(buf+ret, buflen-ret,
                "Rerror tag %u ename '%.*s'", tag,
                fc->params.rerror.error.len,
                fc->params.rerror.error.str);
        if (extended)
            ret += scnprintf(buf+ret, buflen-ret, " ecode %d\n",
                fc->params.rerror.errno);
        break;

    case P9_TFLUSH:
        ret += scnprintf(buf+ret, buflen-ret, "Tflush tag %u oldtag %u",
            tag, fc->params.tflush.oldtag);
        break;

    case P9_RFLUSH:
        ret += scnprintf(buf+ret, buflen-ret, "Rflush tag %u", tag);
        break;

    case P9_TWALK:
        ret += scnprintf(buf+ret, buflen-ret,
            "Twalk tag %u fid %d newfid %d nwname %d", tag,
            fc->params.twalk.fid, fc->params.twalk.newfid,
            fc->params.twalk.nwname);
        for (i = 0; i < fc->params.twalk.nwname; i++)
            ret += scnprintf(buf+ret, buflen-ret, " '%.*s'",
                fc->params.twalk.wnames[i].len,
                fc->params.twalk.wnames[i].str);
        break;

    case P9_RWALK:
        ret += scnprintf(buf+ret, buflen-ret, "Rwalk tag %u nwqid %d",
            tag, fc->params.rwalk.nwqid);
        for (i = 0; i < fc->params.rwalk.nwqid; i++)
            ret += p9_printqid(buf+ret, buflen-ret,
                &fc->params.rwalk.wqids[i]);
        break;

    case P9_TOPEN:
        ret += scnprintf(buf+ret, buflen-ret,
            "Topen tag %u fid %d mode %d", tag,
            fc->params.topen.fid, fc->params.topen.mode);
        break;

//.........这里部分代码省略.........

static int debug_test_smsm(char *buf, int max)
{
	int i = 0;
	int test_num = 0;
	int ret;

	/* Test case 1 - Register new callback for notification */
	do {
		test_num++;
		SMSM_CB_TEST_INIT();
		ret = smsm_state_cb_register(SMSM_APPS_STATE, SMSM_SMDINIT,
				smsm_state_cb, (void *)0x1234);
		UT_EQ_INT(ret, 0);

		/* de-assert SMSM_SMD_INIT to trigger state update */
		UT_EQ_INT(smsm_cb_data.cb_count, 0);
		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, SMSM_SMDINIT, 0x0);
		UT_GT_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);

		UT_EQ_INT(smsm_cb_data.cb_count, 1);
		UT_EQ_INT(smsm_cb_data.old_state & SMSM_SMDINIT, SMSM_SMDINIT);
		UT_EQ_INT(smsm_cb_data.new_state & SMSM_SMDINIT, 0x0);
		UT_EQ_INT((int)smsm_cb_data.data, 0x1234);

		/* re-assert SMSM_SMD_INIT to trigger state update */
		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, 0x0, SMSM_SMDINIT);
		UT_GT_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);
		UT_EQ_INT(smsm_cb_data.cb_count, 2);
		UT_EQ_INT(smsm_cb_data.old_state & SMSM_SMDINIT, 0x0);
		UT_EQ_INT(smsm_cb_data.new_state & SMSM_SMDINIT, SMSM_SMDINIT);

		/* deregister callback */
		ret = smsm_state_cb_deregister(SMSM_APPS_STATE, SMSM_SMDINIT,
				smsm_state_cb, (void *)0x1234);
		UT_EQ_INT(ret, 2);

		/* make sure state change doesn't cause any more callbacks */
		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, SMSM_SMDINIT, 0x0);
		smsm_change_state(SMSM_APPS_STATE, 0x0, SMSM_SMDINIT);
		UT_EQ_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);
		UT_EQ_INT(smsm_cb_data.cb_count, 2);

		i += scnprintf(buf + i, max - i, "Test %d - PASS\n", test_num);
	} while (0);

	/* Test case 2 - Update already registered callback */
	do {
		test_num++;
		SMSM_CB_TEST_INIT();
		ret = smsm_state_cb_register(SMSM_APPS_STATE, SMSM_SMDINIT,
				smsm_state_cb, (void *)0x1234);
		UT_EQ_INT(ret, 0);
		ret = smsm_state_cb_register(SMSM_APPS_STATE, SMSM_INIT,
				smsm_state_cb, (void *)0x1234);
		UT_EQ_INT(ret, 1);

		/* verify both callback bits work */
		INIT_COMPLETION(smsm_cb_completion);
		UT_EQ_INT(smsm_cb_data.cb_count, 0);
		smsm_change_state(SMSM_APPS_STATE, SMSM_SMDINIT, 0x0);
		UT_GT_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);
		UT_EQ_INT(smsm_cb_data.cb_count, 1);
		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, 0x0, SMSM_SMDINIT);
		UT_GT_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);
		UT_EQ_INT(smsm_cb_data.cb_count, 2);

		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, SMSM_INIT, 0x0);
		UT_GT_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);
		UT_EQ_INT(smsm_cb_data.cb_count, 3);
		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, 0x0, SMSM_INIT);
		UT_GT_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);
		UT_EQ_INT(smsm_cb_data.cb_count, 4);

		/* deregister 1st callback */
		ret = smsm_state_cb_deregister(SMSM_APPS_STATE, SMSM_SMDINIT,
				smsm_state_cb, (void *)0x1234);
		UT_EQ_INT(ret, 1);
		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, SMSM_SMDINIT, 0x0);
		smsm_change_state(SMSM_APPS_STATE, 0x0, SMSM_SMDINIT);
		UT_EQ_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
					msecs_to_jiffies(20)), 0);
		UT_EQ_INT(smsm_cb_data.cb_count, 4);

		INIT_COMPLETION(smsm_cb_completion);
		smsm_change_state(SMSM_APPS_STATE, SMSM_INIT, 0x0);
		UT_GT_INT((int)wait_for_completion_timeout(&smsm_cb_completion,
//.........这里部分代码省略.........

static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
{
	struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id];
	struct bcr_identity *core = &cpu->core;
	const struct cpuinfo_data *tbl;
	char *isa_nm;
	int i, be, atomic;
	int n = 0;

	FIX_PTR(cpu);

	if (is_isa_arcompact()) {
		isa_nm = "ARCompact";
		be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);

		atomic = cpu->isa.atomic1;
		if (!cpu->isa.ver)	/* ISA BCR absent, use Kconfig info */
			atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
	} else {
		isa_nm = "ARCv2";
		be = cpu->isa.be;
		atomic = cpu->isa.atomic;
	}

	n += scnprintf(buf + n, len - n,
		       "\nIDENTITY\t: ARCVER [%#02x] ARCNUM [%#02x] CHIPID [%#4x]\n",
		       core->family, core->cpu_id, core->chip_id);

	for (tbl = &arc_cpu_tbl[0]; tbl->info.id != 0; tbl++) {
		if ((core->family >= tbl->info.id) &&
		    (core->family <= tbl->up_range)) {
			n += scnprintf(buf + n, len - n,
				       "processor [%d]\t: %s (%s ISA) %s\n",
				       cpu_id, tbl->info.str, isa_nm,
				       IS_AVAIL1(be, "[Big-Endian]"));
			break;
		}
	}

	if (tbl->info.id == 0)
		n += scnprintf(buf + n, len - n, "UNKNOWN ARC Processor\n");

	n += scnprintf(buf + n, len - n, "CPU speed\t: %u.%02u Mhz\n",
		       (unsigned int)(arc_get_core_freq() / 1000000),
		       (unsigned int)(arc_get_core_freq() / 10000) % 100);

	n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
		       IS_AVAIL1(cpu->timers.t0, "Timer0 "),
		       IS_AVAIL1(cpu->timers.t1, "Timer1 "),
		       IS_AVAIL2(cpu->timers.rtc, "64-bit RTC ",
				 CONFIG_ARC_HAS_RTC));

	n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
			   IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
			   IS_AVAIL2(cpu->isa.ldd, "ll64 ", CONFIG_ARC_HAS_LL64),
			   IS_AVAIL1(cpu->isa.unalign, "unalign (not used)"));

	if (i)
		n += scnprintf(buf + n, len - n, "\n\t\t: ");

	if (cpu->extn_mpy.ver) {
		if (cpu->extn_mpy.ver <= 0x2) {	/* ARCompact */
			n += scnprintf(buf + n, len - n, "mpy ");
		} else {
			int opt = 2;	/* stock MPY/MPYH */

			if (cpu->extn_mpy.dsp)	/* OPT 7-9 */
				opt = cpu->extn_mpy.dsp + 6;

			n += scnprintf(buf + n, len - n, "mpy[opt %d] ", opt);
		}
		n += scnprintf(buf + n, len - n, "%s",
			       IS_USED_CFG(CONFIG_ARC_HAS_HW_MPY));
	}

	n += scnprintf(buf + n, len - n, "%s%s%s%s%s%s%s%s\n",
		       IS_AVAIL1(cpu->isa.div_rem, "div_rem "),
		       IS_AVAIL1(cpu->extn.norm, "norm "),
		       IS_AVAIL1(cpu->extn.barrel, "barrel-shift "),
		       IS_AVAIL1(cpu->extn.swap, "swap "),
		       IS_AVAIL1(cpu->extn.minmax, "minmax "),
		       IS_AVAIL1(cpu->extn.crc, "crc "),
		       IS_AVAIL2(1, "swape", CONFIG_ARC_HAS_SWAPE));

	if (cpu->bpu.ver)
		n += scnprintf(buf + n, len - n,
			      "BPU\t\t: %s%s match, cache:%d, Predict Table:%d\n",
			      IS_AVAIL1(cpu->bpu.full, "full"),
			      IS_AVAIL1(!cpu->bpu.full, "partial"),
			      cpu->bpu.num_cache, cpu->bpu.num_pred);

	return buf;
}

static ssize_t ieee80211_if_fmt_num_buffered_multicast(
	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
	return scnprintf(buf, buflen, "%u\n",
			 skb_queue_len(&sdata->u.ap.ps.bc_buf));
}

/**
 * Dump individual input/output item pair.
 *
 * @s:   pointer to output file
 */
static void smp2p_item(struct seq_file *s, int remote_pid)
{
	struct smp2p_smem *out_ptr;
	struct smp2p_smem *in_ptr;
	struct smp2p_interrupt_config *int_cfg;
	char tmp_buff[64];
	int state;
	int entry;
	struct smp2p_entry_v1 *out_entries = NULL;
	struct smp2p_entry_v1 *in_entries = NULL;
	int out_valid = 0;
	int in_valid = 0;

	int_cfg = smp2p_get_interrupt_config();
	if (!int_cfg)
		return;
	if (!int_cfg[remote_pid].is_configured &&
			remote_pid != SMP2P_REMOTE_MOCK_PROC)
		return;

	out_ptr = smp2p_get_out_item(remote_pid, &state);
	in_ptr = smp2p_get_in_item(remote_pid);

	if (!out_ptr && !in_ptr)
		return;

	/* print item headers */
	seq_printf(s, "%s%s\n",
		" ====================================== ",
		"======================================");
	scnprintf(tmp_buff, sizeof(tmp_buff),
		"Apps(%d)->%s(%d)",
		SMP2P_APPS_PROC, int_cfg[remote_pid].name, remote_pid);
	seq_printf(s, "| %-37s", tmp_buff);

	scnprintf(tmp_buff, sizeof(tmp_buff),
		"%s(%d)->Apps(%d)",
		int_cfg[remote_pid].name, remote_pid, SMP2P_APPS_PROC);
	seq_printf(s, "| %-37s|\n", tmp_buff);
	seq_printf(s, "%s%s\n",
		" ====================================== ",
		"======================================");

	smp2p_item_header1(tmp_buff, sizeof(tmp_buff), out_ptr, state);
	seq_printf(s, "| %-37s", tmp_buff);
	smp2p_item_header1(tmp_buff, sizeof(tmp_buff), in_ptr, -1);
	seq_printf(s, "| %-37s|\n", tmp_buff);

	smp2p_item_header2(tmp_buff, sizeof(tmp_buff), out_ptr);
	seq_printf(s, "| %-37s", tmp_buff);
	smp2p_item_header2(tmp_buff, sizeof(tmp_buff), in_ptr);
	seq_printf(s, "| %-37s|\n", tmp_buff);

	smp2p_item_header3(tmp_buff, sizeof(tmp_buff), out_ptr);
	seq_printf(s, "| %-37s", tmp_buff);
	smp2p_item_header3(tmp_buff, sizeof(tmp_buff), in_ptr);
	seq_printf(s, "| %-37s|\n", tmp_buff);

	seq_printf(s, " %s%s\n",
		"-------------------------------------- ",
		"--------------------------------------");
	seq_printf(s, "| %-37s",
		"Entry Name       Value");
	seq_printf(s, "| %-37s|\n",
		"Entry Name       Value");
	seq_printf(s, " %s%s\n",
		"-------------------------------------- ",
		"--------------------------------------");

	/* print entries */
	if (out_ptr) {
		out_entries = (struct smp2p_entry_v1 *)((void *)out_ptr +
				sizeof(struct smp2p_smem));
		out_valid = SMP2P_GET_ENT_VALID(out_ptr->valid_total_ent);
	}

	if (in_ptr) {
		in_entries = (struct smp2p_entry_v1 *)((void *)in_ptr +
				sizeof(struct smp2p_smem));
		in_valid = SMP2P_GET_ENT_VALID(in_ptr->valid_total_ent);
	}

	for (entry = 0; out_entries || in_entries; ++entry) {
		if (out_entries && entry < out_valid) {
			scnprintf(tmp_buff, sizeof(tmp_buff),
					"%-16s 0x%08x",
					out_entries->name,
					out_entries->entry);
			++out_entries;
		} else {
			out_entries = NULL;
			scnprintf(tmp_buff, sizeof(tmp_buff), "None");
		}
		seq_printf(s, "| %-37s", tmp_buff);

//.........这里部分代码省略.........

static ssize_t read_file_antenna_diversity(struct file *file,
					   char __user *user_buf,
					   size_t count, loff_t *ppos)
{
	struct ath_softc *sc = file->private_data;
	struct ath_hw *ah = sc->sc_ah;
	struct ath9k_hw_capabilities *pCap = &ah->caps;
	struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
	struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
	struct ath_hw_antcomb_conf div_ant_conf;
	unsigned int len = 0;
	const unsigned int size = 1024;
	ssize_t retval = 0;
	char *buf;
	static const char *lna_conf_str[4] = {
		"LNA1_MINUS_LNA2", "LNA2", "LNA1", "LNA1_PLUS_LNA2"
	};

	buf = kzalloc(size, GFP_KERNEL);
	if (buf == NULL)
		return -ENOMEM;

	if (!(pCap->hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)) {
		len += scnprintf(buf + len, size - len, "%s\n",
				 "Antenna Diversity Combining is disabled");
		goto exit;
	}

	ath9k_ps_wakeup(sc);
	ath9k_hw_antdiv_comb_conf_get(ah, &div_ant_conf);
	len += scnprintf(buf + len, size - len, "Current MAIN config : %s\n",
			 lna_conf_str[div_ant_conf.main_lna_conf]);
	len += scnprintf(buf + len, size - len, "Current ALT config  : %s\n",
			 lna_conf_str[div_ant_conf.alt_lna_conf]);
	len += scnprintf(buf + len, size - len, "Average MAIN RSSI   : %d\n",
			 as_main->rssi_avg);
	len += scnprintf(buf + len, size - len, "Average ALT RSSI    : %d\n\n",
			 as_alt->rssi_avg);
	ath9k_ps_restore(sc);

	len += scnprintf(buf + len, size - len, "Packet Receive Cnt:\n");
	len += scnprintf(buf + len, size - len, "-------------------\n");

	len += scnprintf(buf + len, size - len, "%30s%15s\n",
			 "MAIN", "ALT");
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "TOTAL COUNT",
			 as_main->recv_cnt,
			 as_alt->recv_cnt);
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA1",
			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1],
			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1]);
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA2",
			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2],
			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2]);
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA1 + LNA2",
			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA1 - LNA2",
			 as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
			 as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);

	len += scnprintf(buf + len, size - len, "\nLNA Config Attempts:\n");
	len += scnprintf(buf + len, size - len, "--------------------\n");

	len += scnprintf(buf + len, size - len, "%30s%15s\n",
			 "MAIN", "ALT");
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA1",
			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1],
			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1]);
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA2",
			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2],
			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2]);
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA1 + LNA2",
			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
	len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
			 "LNA1 - LNA2",
			 as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
			 as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);

exit:
	if (len > size)
		len = size;

	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	kfree(buf);

	return retval;
}

/**
 * iwl_print_event_log - Dump error event log to syslog
 *
 */
static int iwl_print_event_log(struct iwl_trans *trans, u32 start_idx,
			       u32 num_events, u32 mode,
			       int pos, char **buf, size_t bufsz)
{
	u32 i;
	u32 base;       /* SRAM byte address of event log header */
	u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
	u32 ptr;        /* SRAM byte address of log data */
	u32 ev, time, data; /* event log data */
	unsigned long reg_flags;

	if (num_events == 0)
		return pos;

	base = trans->shrd->device_pointers.log_event_table;
	if (trans->shrd->ucode_type == IWL_UCODE_INIT) {
		if (!base)
			base = trans->shrd->fw->init_evtlog_ptr;
	} else {
		if (!base)
			base = trans->shrd->fw->inst_evtlog_ptr;
	}

	if (mode == 0)
		event_size = 2 * sizeof(u32);
	else
		event_size = 3 * sizeof(u32);

	ptr = base + EVENT_START_OFFSET + (start_idx * event_size);

	/* Make sure device is powered up for SRAM reads */
	spin_lock_irqsave(&trans->reg_lock, reg_flags);
	if (unlikely(!iwl_grab_nic_access(trans)))
		goto out_unlock;

	/* Set starting address; reads will auto-increment */
	iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);

	/* "time" is actually "data" for mode 0 (no timestamp).
	* place event id # at far right for easier visual parsing. */
	for (i = 0; i < num_events; i++) {
		ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
		time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
		if (mode == 0) {
			/* data, ev */
			if (bufsz) {
				pos += scnprintf(*buf + pos, bufsz - pos,
						"EVT_LOG:0x%08x:%04u\n",
						time, ev);
			} else {
				trace_iwlwifi_dev_ucode_event(trans->dev, 0,
					time, ev);
				IWL_ERR(trans, "EVT_LOG:0x%08x:%04u\n",
					time, ev);
			}
		} else {
			data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
			if (bufsz) {
				pos += scnprintf(*buf + pos, bufsz - pos,
						"EVT_LOGT:%010u:0x%08x:%04u\n",
						 time, data, ev);
			} else {
				IWL_ERR(trans, "EVT_LOGT:%010u:0x%08x:%04u\n",
					time, data, ev);
				trace_iwlwifi_dev_ucode_event(trans->dev, time,
					data, ev);
			}
		}
	}

	/* Allow device to power down */
	iwl_release_nic_access(trans);
out_unlock:
	spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
	return pos;
}

int dso__read_binary_type_filename(const struct dso *dso,
				   enum dso_binary_type type,
				   char *root_dir, char *filename, size_t size)
{
	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
	int ret = 0;

	switch (type) {
	case DSO_BINARY_TYPE__DEBUGLINK: {
		char *debuglink;

		strncpy(filename, dso->long_name, size);
		debuglink = filename + dso->long_name_len;
		while (debuglink != filename && *debuglink != '/')
			debuglink--;
		if (*debuglink == '/')
			debuglink++;
		filename__read_debuglink(dso->long_name, debuglink,
					 size - (debuglink - filename));
		}
		break;
	case DSO_BINARY_TYPE__BUILD_ID_CACHE:
		/* skip the locally configured cache if a symfs is given */
		if (symbol_conf.symfs[0] ||
		    (dso__build_id_filename(dso, filename, size) == NULL))
			ret = -1;
		break;

	case DSO_BINARY_TYPE__FEDORA_DEBUGINFO:
		snprintf(filename, size, "%s/usr/lib/debug%s.debug",
			 symbol_conf.symfs, dso->long_name);
		break;

	case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO:
		snprintf(filename, size, "%s/usr/lib/debug%s",
			 symbol_conf.symfs, dso->long_name);
		break;

	case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO:
	{
		const char *last_slash;
		size_t len;
		size_t dir_size;

		last_slash = dso->long_name + dso->long_name_len;
		while (last_slash != dso->long_name && *last_slash != '/')
			last_slash--;

		len = scnprintf(filename, size, "%s", symbol_conf.symfs);
		dir_size = last_slash - dso->long_name + 2;
		if (dir_size > (size - len)) {
			ret = -1;
			break;
		}
		len += scnprintf(filename + len, dir_size, "%s",  dso->long_name);
		len += scnprintf(filename + len , size - len, ".debug%s",
								last_slash);
		break;
	}

	case DSO_BINARY_TYPE__BUILDID_DEBUGINFO:
		if (!dso->has_build_id) {
			ret = -1;
			break;
		}

		build_id__sprintf(dso->build_id,
				  sizeof(dso->build_id),
				  build_id_hex);
		snprintf(filename, size,
			 "%s/usr/lib/debug/.build-id/%.2s/%s.debug",
			 symbol_conf.symfs, build_id_hex, build_id_hex + 2);
		break;

	case DSO_BINARY_TYPE__VMLINUX:
	case DSO_BINARY_TYPE__GUEST_VMLINUX:
	case DSO_BINARY_TYPE__SYSTEM_PATH_DSO:
		snprintf(filename, size, "%s%s",
			 symbol_conf.symfs, dso->long_name);
		break;

	case DSO_BINARY_TYPE__GUEST_KMODULE:
		snprintf(filename, size, "%s%s%s", symbol_conf.symfs,
			 root_dir, dso->long_name);
		break;

	case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE:
		snprintf(filename, size, "%s%s", symbol_conf.symfs,
			 dso->long_name);
		break;

	case DSO_BINARY_TYPE__KCORE:
	case DSO_BINARY_TYPE__GUEST_KCORE:
		snprintf(filename, size, "%s", dso->long_name);
		break;

	default:
	case DSO_BINARY_TYPE__KALLSYMS:
	case DSO_BINARY_TYPE__GUEST_KALLSYMS:
	case DSO_BINARY_TYPE__JAVA_JIT:
//.........这里部分代码省略.........

static ssize_t
il_dbgfs_channels_read(struct file *file, char __user *user_buf, size_t count,
		       loff_t *ppos)
{
	struct il_priv *il = file->private_data;
	struct ieee80211_channel *channels = NULL;
	const struct ieee80211_supported_band *supp_band = NULL;
	int pos = 0, i, bufsz = PAGE_SIZE;
	char *buf;
	ssize_t ret;

	if (!test_bit(S_GEO_CONFIGURED, &il->status))
		return -EAGAIN;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf) {
		IL_ERR("Can not allocate Buffer\n");
		return -ENOMEM;
	}

	supp_band = il_get_hw_mode(il, IEEE80211_BAND_2GHZ);
	if (supp_band) {
		channels = supp_band->channels;

		pos +=
		    scnprintf(buf + pos, bufsz - pos,
			      "Displaying %d channels in 2.4GHz band 802.11bg):\n",
			      supp_band->n_channels);

		for (i = 0; i < supp_band->n_channels; i++)
			pos +=
			    scnprintf(buf + pos, bufsz - pos,
				      "%d: %ddBm: BSS%s%s, %s.\n",
				      channels[i].hw_value,
				      channels[i].max_power,
				      channels[i].
				      flags & IEEE80211_CHAN_RADAR ?
				      " (IEEE 802.11h required)" : "",
				      ((channels[i].
					flags & IEEE80211_CHAN_NO_IR) ||
				       (channels[i].
					flags & IEEE80211_CHAN_RADAR)) ? "" :
				      ", IBSS",
				      channels[i].
				      flags & IEEE80211_CHAN_NO_IR ?
				      "passive only" : "active/passive");
	}
	supp_band = il_get_hw_mode(il, IEEE80211_BAND_5GHZ);
	if (supp_band) {
		channels = supp_band->channels;

		pos +=
		    scnprintf(buf + pos, bufsz - pos,
			      "Displaying %d channels in 5.2GHz band (802.11a)\n",
			      supp_band->n_channels);

		for (i = 0; i < supp_band->n_channels; i++)
			pos +=
			    scnprintf(buf + pos, bufsz - pos,
				      "%d: %ddBm: BSS%s%s, %s.\n",
				      channels[i].hw_value,
				      channels[i].max_power,
				      channels[i].
				      flags & IEEE80211_CHAN_RADAR ?
				      " (IEEE 802.11h required)" : "",
				      ((channels[i].
					flags & IEEE80211_CHAN_NO_IR) ||
				       (channels[i].
					flags & IEEE80211_CHAN_RADAR)) ? "" :
				      ", IBSS",
				      channels[i].
				      flags & IEEE80211_CHAN_NO_IR ?
				      "passive only" : "active/passive");
	}
	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
}