mirror of https://gitee.com/openkylin/linux.git
234 lines
5.9 KiB
C
234 lines
5.9 KiB
C
/*
|
|
* drivers/s390/cio/qdio_debug.c
|
|
*
|
|
* Copyright IBM Corp. 2008
|
|
*
|
|
* Author: Jan Glauber (jang@linux.vnet.ibm.com)
|
|
*/
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/debugfs.h>
|
|
#include <asm/qdio.h>
|
|
#include <asm/debug.h>
|
|
#include "qdio_debug.h"
|
|
#include "qdio.h"
|
|
|
|
debug_info_t *qdio_dbf_setup;
|
|
debug_info_t *qdio_dbf_trace;
|
|
|
|
static struct dentry *debugfs_root;
|
|
#define MAX_DEBUGFS_QUEUES 32
|
|
static struct dentry *debugfs_queues[MAX_DEBUGFS_QUEUES] = { NULL };
|
|
static DEFINE_MUTEX(debugfs_mutex);
|
|
#define QDIO_DEBUGFS_NAME_LEN 40
|
|
|
|
void qdio_allocate_do_dbf(struct qdio_initialize *init_data)
|
|
{
|
|
char dbf_text[20];
|
|
|
|
sprintf(dbf_text, "qfmt:%x", init_data->q_format);
|
|
QDIO_DBF_TEXT0(0, setup, dbf_text);
|
|
QDIO_DBF_HEX0(0, setup, init_data->adapter_name, 8);
|
|
sprintf(dbf_text, "qpff%4x", init_data->qib_param_field_format);
|
|
QDIO_DBF_TEXT0(0, setup, dbf_text);
|
|
QDIO_DBF_HEX0(0, setup, &init_data->qib_param_field, sizeof(void *));
|
|
QDIO_DBF_HEX0(0, setup, &init_data->input_slib_elements, sizeof(void *));
|
|
QDIO_DBF_HEX0(0, setup, &init_data->output_slib_elements, sizeof(void *));
|
|
sprintf(dbf_text, "niq:%4x", init_data->no_input_qs);
|
|
QDIO_DBF_TEXT0(0, setup, dbf_text);
|
|
sprintf(dbf_text, "noq:%4x", init_data->no_output_qs);
|
|
QDIO_DBF_TEXT0(0, setup, dbf_text);
|
|
QDIO_DBF_HEX0(0, setup, &init_data->input_handler, sizeof(void *));
|
|
QDIO_DBF_HEX0(0, setup, &init_data->output_handler, sizeof(void *));
|
|
QDIO_DBF_HEX0(0, setup, &init_data->int_parm, sizeof(long));
|
|
QDIO_DBF_HEX0(0, setup, &init_data->flags, sizeof(long));
|
|
QDIO_DBF_HEX0(0, setup, &init_data->input_sbal_addr_array, sizeof(void *));
|
|
QDIO_DBF_HEX0(0, setup, &init_data->output_sbal_addr_array, sizeof(void *));
|
|
}
|
|
|
|
static void qdio_unregister_dbf_views(void)
|
|
{
|
|
if (qdio_dbf_setup)
|
|
debug_unregister(qdio_dbf_setup);
|
|
if (qdio_dbf_trace)
|
|
debug_unregister(qdio_dbf_trace);
|
|
}
|
|
|
|
static int qdio_register_dbf_views(void)
|
|
{
|
|
qdio_dbf_setup = debug_register("qdio_setup", QDIO_DBF_SETUP_PAGES,
|
|
QDIO_DBF_SETUP_NR_AREAS,
|
|
QDIO_DBF_SETUP_LEN);
|
|
if (!qdio_dbf_setup)
|
|
goto oom;
|
|
debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view);
|
|
debug_set_level(qdio_dbf_setup, QDIO_DBF_SETUP_LEVEL);
|
|
|
|
qdio_dbf_trace = debug_register("qdio_trace", QDIO_DBF_TRACE_PAGES,
|
|
QDIO_DBF_TRACE_NR_AREAS,
|
|
QDIO_DBF_TRACE_LEN);
|
|
if (!qdio_dbf_trace)
|
|
goto oom;
|
|
debug_register_view(qdio_dbf_trace, &debug_hex_ascii_view);
|
|
debug_set_level(qdio_dbf_trace, QDIO_DBF_TRACE_LEVEL);
|
|
return 0;
|
|
oom:
|
|
qdio_unregister_dbf_views();
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int qstat_show(struct seq_file *m, void *v)
|
|
{
|
|
unsigned char state;
|
|
struct qdio_q *q = m->private;
|
|
int i;
|
|
|
|
if (!q)
|
|
return 0;
|
|
|
|
seq_printf(m, "device state indicator: %d\n", *q->irq_ptr->dsci);
|
|
seq_printf(m, "nr_used: %d\n", atomic_read(&q->nr_buf_used));
|
|
seq_printf(m, "ftc: %d\n", q->first_to_check);
|
|
seq_printf(m, "last_move_ftc: %d\n", q->last_move_ftc);
|
|
seq_printf(m, "polling: %d\n", q->u.in.polling);
|
|
seq_printf(m, "slsb buffer states:\n");
|
|
|
|
qdio_siga_sync_q(q);
|
|
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
|
|
get_buf_state(q, i, &state);
|
|
switch (state) {
|
|
case SLSB_P_INPUT_NOT_INIT:
|
|
case SLSB_P_OUTPUT_NOT_INIT:
|
|
seq_printf(m, "N");
|
|
break;
|
|
case SLSB_P_INPUT_PRIMED:
|
|
case SLSB_CU_OUTPUT_PRIMED:
|
|
seq_printf(m, "+");
|
|
break;
|
|
case SLSB_P_INPUT_ACK:
|
|
seq_printf(m, "A");
|
|
break;
|
|
case SLSB_P_INPUT_ERROR:
|
|
case SLSB_P_OUTPUT_ERROR:
|
|
seq_printf(m, "x");
|
|
break;
|
|
case SLSB_CU_INPUT_EMPTY:
|
|
case SLSB_P_OUTPUT_EMPTY:
|
|
seq_printf(m, "-");
|
|
break;
|
|
case SLSB_P_INPUT_HALTED:
|
|
case SLSB_P_OUTPUT_HALTED:
|
|
seq_printf(m, ".");
|
|
break;
|
|
default:
|
|
seq_printf(m, "?");
|
|
}
|
|
if (i == 63)
|
|
seq_printf(m, "\n");
|
|
}
|
|
seq_printf(m, "\n");
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t qstat_seq_write(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *off)
|
|
{
|
|
struct seq_file *seq = file->private_data;
|
|
struct qdio_q *q = seq->private;
|
|
|
|
if (!q)
|
|
return 0;
|
|
|
|
if (q->is_input_q)
|
|
xchg(q->irq_ptr->dsci, 1);
|
|
local_bh_disable();
|
|
tasklet_schedule(&q->tasklet);
|
|
local_bh_enable();
|
|
return count;
|
|
}
|
|
|
|
static int qstat_seq_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, qstat_show,
|
|
filp->f_path.dentry->d_inode->i_private);
|
|
}
|
|
|
|
static void remove_debugfs_entry(struct qdio_q *q)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_DEBUGFS_QUEUES; i++) {
|
|
if (!debugfs_queues[i])
|
|
continue;
|
|
if (debugfs_queues[i]->d_inode->i_private == q) {
|
|
debugfs_remove(debugfs_queues[i]);
|
|
debugfs_queues[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct file_operations debugfs_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = qstat_seq_open,
|
|
.read = seq_read,
|
|
.write = qstat_seq_write,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev)
|
|
{
|
|
int i = 0;
|
|
char name[QDIO_DEBUGFS_NAME_LEN];
|
|
|
|
while (debugfs_queues[i] != NULL) {
|
|
i++;
|
|
if (i >= MAX_DEBUGFS_QUEUES)
|
|
return;
|
|
}
|
|
snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%s_%d",
|
|
dev_name(&cdev->dev),
|
|
q->is_input_q ? "input" : "output",
|
|
q->nr);
|
|
debugfs_queues[i] = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
|
|
debugfs_root, q, &debugfs_fops);
|
|
}
|
|
|
|
void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
|
|
{
|
|
struct qdio_q *q;
|
|
int i;
|
|
|
|
mutex_lock(&debugfs_mutex);
|
|
for_each_input_queue(irq_ptr, q, i)
|
|
setup_debugfs_entry(q, cdev);
|
|
for_each_output_queue(irq_ptr, q, i)
|
|
setup_debugfs_entry(q, cdev);
|
|
mutex_unlock(&debugfs_mutex);
|
|
}
|
|
|
|
void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
|
|
{
|
|
struct qdio_q *q;
|
|
int i;
|
|
|
|
mutex_lock(&debugfs_mutex);
|
|
for_each_input_queue(irq_ptr, q, i)
|
|
remove_debugfs_entry(q);
|
|
for_each_output_queue(irq_ptr, q, i)
|
|
remove_debugfs_entry(q);
|
|
mutex_unlock(&debugfs_mutex);
|
|
}
|
|
|
|
int __init qdio_debug_init(void)
|
|
{
|
|
debugfs_root = debugfs_create_dir("qdio_queues", NULL);
|
|
return qdio_register_dbf_views();
|
|
}
|
|
|
|
void qdio_debug_exit(void)
|
|
{
|
|
debugfs_remove(debugfs_root);
|
|
qdio_unregister_dbf_views();
|
|
}
|