xref: /openbmc/linux/drivers/s390/cio/qdio_debug.h (revision e23feb16)
1 /*
2  *  Copyright IBM Corp. 2008
3  *
4  *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
5  */
6 #ifndef QDIO_DEBUG_H
7 #define QDIO_DEBUG_H
8 
9 #include <asm/debug.h>
10 #include <asm/qdio.h>
11 #include "qdio.h"
12 
13 /* that gives us 15 characters in the text event views */
14 #define QDIO_DBF_LEN	16
15 
16 extern debug_info_t *qdio_dbf_setup;
17 extern debug_info_t *qdio_dbf_error;
18 
19 /* sort out low debug levels early to avoid wasted sprints */
20 static inline int qdio_dbf_passes(debug_info_t *dbf_grp, int level)
21 {
22 	return (level <= dbf_grp->level);
23 }
24 
25 #define DBF_ERR		3	/* error conditions	*/
26 #define DBF_WARN	4	/* warning conditions	*/
27 #define DBF_INFO	6	/* informational	*/
28 
29 #undef DBF_EVENT
30 #undef DBF_ERROR
31 #undef DBF_DEV_EVENT
32 
33 #define DBF_EVENT(text...) \
34 	do { \
35 		char debug_buffer[QDIO_DBF_LEN]; \
36 		snprintf(debug_buffer, QDIO_DBF_LEN, text); \
37 		debug_text_event(qdio_dbf_setup, DBF_ERR, debug_buffer); \
38 	} while (0)
39 
40 static inline void DBF_HEX(void *addr, int len)
41 {
42 	while (len > 0) {
43 		debug_event(qdio_dbf_setup, DBF_ERR, addr, len);
44 		len -= qdio_dbf_setup->buf_size;
45 		addr += qdio_dbf_setup->buf_size;
46 	}
47 }
48 
49 #define DBF_ERROR(text...) \
50 	do { \
51 		char debug_buffer[QDIO_DBF_LEN]; \
52 		snprintf(debug_buffer, QDIO_DBF_LEN, text); \
53 		debug_text_event(qdio_dbf_error, DBF_ERR, debug_buffer); \
54 	} while (0)
55 
56 static inline void DBF_ERROR_HEX(void *addr, int len)
57 {
58 	while (len > 0) {
59 		debug_event(qdio_dbf_error, DBF_ERR, addr, len);
60 		len -= qdio_dbf_error->buf_size;
61 		addr += qdio_dbf_error->buf_size;
62 	}
63 }
64 
65 #define DBF_DEV_EVENT(level, device, text...) \
66 	do { \
67 		char debug_buffer[QDIO_DBF_LEN]; \
68 		if (qdio_dbf_passes(device->debug_area, level)) { \
69 			snprintf(debug_buffer, QDIO_DBF_LEN, text); \
70 			debug_text_event(device->debug_area, level, debug_buffer); \
71 		} \
72 	} while (0)
73 
74 static inline void DBF_DEV_HEX(struct qdio_irq *dev, void *addr,
75 			       int len, int level)
76 {
77 	while (len > 0) {
78 		debug_event(dev->debug_area, level, addr, len);
79 		len -= dev->debug_area->buf_size;
80 		addr += dev->debug_area->buf_size;
81 	}
82 }
83 
84 void qdio_allocate_dbf(struct qdio_initialize *init_data,
85 		       struct qdio_irq *irq_ptr);
86 void qdio_setup_debug_entries(struct qdio_irq *irq_ptr,
87 			      struct ccw_device *cdev);
88 void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr);
89 int qdio_debug_init(void);
90 void qdio_debug_exit(void);
91 
92 #endif
93