Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  Copyright IBM Corp. 2008, 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <asm/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include "qdio_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include "qdio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) debug_info_t *qdio_dbf_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) debug_info_t *qdio_dbf_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) static struct dentry *debugfs_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define QDIO_DEBUGFS_NAME_LEN	10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define QDIO_DBF_NAME_LEN	20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) struct qdio_dbf_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	char dbf_name[QDIO_DBF_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	debug_info_t *dbf_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	struct list_head dbf_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static LIST_HEAD(qdio_dbf_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) static DEFINE_MUTEX(qdio_dbf_list_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) static debug_info_t *qdio_get_dbf_entry(char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	struct qdio_dbf_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	debug_info_t *rc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	mutex_lock(&qdio_dbf_list_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	list_for_each_entry(entry, &qdio_dbf_list, dbf_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 		if (strcmp(entry->dbf_name, name) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 			rc = entry->dbf_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	mutex_unlock(&qdio_dbf_list_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static void qdio_clear_dbf_list(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct qdio_dbf_entry *entry, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	mutex_lock(&qdio_dbf_list_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	list_for_each_entry_safe(entry, tmp, &qdio_dbf_list, dbf_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		list_del(&entry->dbf_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		debug_unregister(entry->dbf_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	mutex_unlock(&qdio_dbf_list_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) int qdio_allocate_dbf(struct qdio_irq *irq_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	char text[QDIO_DBF_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct qdio_dbf_entry *new_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	/* allocate trace view for the interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	snprintf(text, QDIO_DBF_NAME_LEN, "qdio_%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		 dev_name(&irq_ptr->cdev->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	irq_ptr->debug_area = qdio_get_dbf_entry(text);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (irq_ptr->debug_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf reused");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		irq_ptr->debug_area = debug_register(text, 2, 1, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		if (!irq_ptr->debug_area)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		if (debug_register_view(irq_ptr->debug_area,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 						&debug_hex_ascii_view)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			debug_unregister(irq_ptr->debug_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		debug_set_level(irq_ptr->debug_area, DBF_WARN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf created");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		new_entry = kzalloc(sizeof(struct qdio_dbf_entry), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if (!new_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			debug_unregister(irq_ptr->debug_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		strlcpy(new_entry->dbf_name, text, QDIO_DBF_NAME_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		new_entry->dbf_info = irq_ptr->debug_area;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		mutex_lock(&qdio_dbf_list_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		list_add(&new_entry->dbf_list, &qdio_dbf_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		mutex_unlock(&qdio_dbf_list_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) static int qstat_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	unsigned char state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	struct qdio_q *q = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (!q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	seq_printf(m, "Timestamp: %Lx  Last AI: %Lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		   q->timestamp, last_ai_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	seq_printf(m, "nr_used: %d  ftc: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		   atomic_read(&q->nr_buf_used), q->first_to_check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	if (q->is_input_q) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		seq_printf(m, "batch start: %u  batch count: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 			   q->u.in.batch_start, q->u.in.batch_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		seq_printf(m, "DSCI: %x   IRQs disabled: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 			   *(u8 *)q->irq_ptr->dsci,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 			   test_bit(QDIO_IRQ_DISABLED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 				    &q->irq_ptr->poll_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	seq_printf(m, "SBAL states:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	seq_printf(m, "|0      |8      |16     |24     |32     |40     |48     |56  63|\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		debug_get_buf_state(q, i, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		switch (state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		case SLSB_P_INPUT_NOT_INIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		case SLSB_P_OUTPUT_NOT_INIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			seq_printf(m, "N");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		case SLSB_P_OUTPUT_PENDING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			seq_printf(m, "P");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		case SLSB_P_INPUT_PRIMED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		case SLSB_CU_OUTPUT_PRIMED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 			seq_printf(m, "+");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		case SLSB_P_INPUT_ACK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 			seq_printf(m, "A");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		case SLSB_P_INPUT_ERROR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		case SLSB_P_OUTPUT_ERROR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 			seq_printf(m, "x");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		case SLSB_CU_INPUT_EMPTY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		case SLSB_P_OUTPUT_EMPTY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 			seq_printf(m, "-");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		case SLSB_P_INPUT_HALTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		case SLSB_P_OUTPUT_HALTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			seq_printf(m, ".");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 			seq_printf(m, "?");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		if (i == 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			seq_printf(m, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	seq_printf(m, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	seq_printf(m, "|64     |72     |80     |88     |96     |104    |112    |   127|\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	seq_printf(m, "\nSBAL statistics:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (!q->irq_ptr->perf_stat_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		seq_printf(m, " disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	seq_printf(m, "\n1          2..        4..        8..        "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		   "16..       32..       64..       128\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	for (i = 0; i < ARRAY_SIZE(q->q_stats.nr_sbals); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		seq_printf(m, "%-10u ", q->q_stats.nr_sbals[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	seq_printf(m, "\nError      NOP        Total\n%-10u %-10u %-10u\n\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		   q->q_stats.nr_sbal_error, q->q_stats.nr_sbal_nop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		   q->q_stats.nr_sbal_total);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) DEFINE_SHOW_ATTRIBUTE(qstat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static int ssqd_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct ccw_device *cdev = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	struct qdio_ssqd_desc ssqd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	rc = qdio_get_ssqd_desc(cdev, &ssqd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	seq_hex_dump(m, "", DUMP_PREFIX_NONE, 16, 4, &ssqd, sizeof(ssqd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		     false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) DEFINE_SHOW_ATTRIBUTE(ssqd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static char *qperf_names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	"Assumed adapter interrupts",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	"QDIO interrupts",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	"Requested PCIs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	"Inbound tasklet runs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	"Inbound tasklet resched",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	"Inbound tasklet resched2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	"Outbound tasklet runs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	"SIGA read",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	"SIGA write",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	"SIGA sync",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	"Inbound calls",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	"Inbound handler",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	"Inbound stop_polling",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	"Inbound queue full",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	"Outbound calls",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	"Outbound handler",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	"Outbound queue full",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	"Outbound fast_requeue",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	"Outbound target_full",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	"QEBSM eqbs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	"QEBSM eqbs partial",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	"QEBSM sqbs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	"QEBSM sqbs partial",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	"Discarded interrupts"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static int qperf_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	struct qdio_irq *irq_ptr = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	unsigned int *stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	if (!irq_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	if (!irq_ptr->perf_stat_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		seq_printf(m, "disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	stat = (unsigned int *)&irq_ptr->perf_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	for (i = 0; i < ARRAY_SIZE(qperf_names); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		seq_printf(m, "%26s:\t%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 			   qperf_names[i], *(stat + i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			       size_t count, loff_t *off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	struct seq_file *seq = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	struct qdio_irq *irq_ptr = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	struct qdio_q *q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	if (!irq_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	ret = kstrtoul_from_user(ubuf, count, 10, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	switch (val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		irq_ptr->perf_stat_enabled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		for_each_input_queue(irq_ptr, q, i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 			memset(&q->q_stats, 0, sizeof(q->q_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		for_each_output_queue(irq_ptr, q, i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 			memset(&q->q_stats, 0, sizeof(q->q_stats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		irq_ptr->perf_stat_enabled = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static int qperf_seq_open(struct inode *inode, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	return single_open(filp, qperf_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 			   file_inode(filp)->i_private);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static const struct file_operations debugfs_perf_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	.owner	 = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	.open	 = qperf_seq_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	.read	 = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	.write	 = qperf_seq_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	.llseek  = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	.release = single_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) static void setup_debugfs_entry(struct dentry *parent, struct qdio_q *q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	char name[QDIO_DEBUGFS_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		 q->is_input_q ? "input" : "output",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		 q->nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	debugfs_create_file(name, 0444, parent, q, &qstat_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) void qdio_setup_debug_entries(struct qdio_irq *irq_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	struct qdio_q *q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&irq_ptr->cdev->dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 						  debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	debugfs_create_file("statistics", S_IFREG | S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 			    irq_ptr->debugfs_dev, irq_ptr, &debugfs_perf_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	debugfs_create_file("ssqd", 0444, irq_ptr->debugfs_dev, irq_ptr->cdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 			    &ssqd_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	for_each_input_queue(irq_ptr, q, i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		setup_debugfs_entry(irq_ptr->debugfs_dev, q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	for_each_output_queue(irq_ptr, q, i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		setup_debugfs_entry(irq_ptr->debugfs_dev, q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	debugfs_remove_recursive(irq_ptr->debugfs_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) int __init qdio_debug_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	debugfs_root = debugfs_create_dir("qdio", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	qdio_dbf_setup = debug_register("qdio_setup", 16, 1, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	debug_set_level(qdio_dbf_setup, DBF_INFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	DBF_EVENT("dbf created\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	qdio_dbf_error = debug_register("qdio_error", 4, 1, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	debug_register_view(qdio_dbf_error, &debug_hex_ascii_view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	debug_set_level(qdio_dbf_error, DBF_INFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	DBF_ERROR("dbf created\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) void qdio_debug_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	qdio_clear_dbf_list();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	debugfs_remove_recursive(debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	debug_unregister(qdio_dbf_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	debug_unregister(qdio_dbf_error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }