xref: /illumos-gate/usr/src/uts/common/io/cxgbe/t4nex/cudbg.h (revision 698f4ab6008be205f4362675967638572eef4f21)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source. A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*-
13  * Copyright (c) 2019 Chelsio Communications, Inc.
14  * All rights reserved.
15  * * Redistribution and use in source and binary forms, with or without
16  * modification, are permitted provided that the following conditions * are met:
17  * 1. Redistributions of source code must retain the above copyright
18  *    notice, this list of conditions and the following disclaimer.
19  * 2. Redistributions in binary form must reproduce the above copyright
20  *    notice, this list of conditions and the following disclaimer in the
21  *    documentation and/or other materials provided with the distribution.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 /*
37  * Chelsio Unified Debug Interface header file.
38  * Version 1.1
39  */
40 #ifndef _CUDBG_IF_H_
41 #define _CUDBG_IF_H_
42 
43 #ifndef _KERNEL
44 #include <stdlib.h>
45 #endif
46 
47 #include "cudbg_lib_common.h"
48 
49 #ifdef __GNUC__
50 #define ATTRIBUTE_UNUSED __attribute__ ((unused))
51 #else
52 #define ATTRIBUTE_UNUSED
53 #endif
54 
55 #if defined(CONFIG_CUDBG_DEBUG)
56 #define cudbg_debug(pdbg_init, format,  ...) do {\
57 	pdbg_init->print(format, ##__VA_ARGS__); \
58 } while (0)
59 #else
60 #define cudbg_debug(pdbg_init, format,  ...) do { } while (0)
61 #endif
62 
63 #define OUT
64 #define IN
65 #define INOUT
66 
67 /* Error codes */
68 
69 #define CUDBG_STATUS_SUCCESS		     0
70 #define CUDBG_STATUS_NOSPACE		    -2
71 #define CUDBG_STATUS_FLASH_WRITE_FAIL	    -3
72 #define CUDBG_STATUS_FLASH_READ_FAIL	    -4
73 #define CUDBG_STATUS_UNDEFINED_OUT_BUF	    -5
74 #define CUDBG_STATUS_UNDEFINED_CBFN	    -6
75 #define CUDBG_STATUS_UNDEFINED_PRINTF_CBFN  -7
76 #define CUDBG_STATUS_ADAP_INVALID	    -8
77 #define CUDBG_STATUS_FLASH_EMPTY	    -9
78 #define CUDBG_STATUS_NO_ADAPTER		    -10
79 #define CUDBG_STATUS_NO_SIGNATURE	    -11
80 #define CUDBG_STATUS_MULTIPLE_REG	    -12
81 #define CUDBG_STATUS_UNREGISTERED	    -13
82 #define CUDBG_STATUS_UNDEFINED_ENTITY	    -14
83 #define CUDBG_STATUS_REG_FAIlED		    -15
84 #define CUDBG_STATUS_DEVLOG_FAILED	    -16
85 #define CUDBG_STATUS_SMALL_BUFF		    -17
86 #define CUDBG_STATUS_CHKSUM_MISSMATCH	    -18
87 #define CUDBG_STATUS_NO_SCRATCH_MEM	    -19
88 #define CUDBG_STATUS_OUTBUFF_OVERFLOW	    -20
89 #define CUDBG_STATUS_INVALID_BUFF	    -21  /* Invalid magic */
90 #define CUDBG_STATUS_FILE_OPEN_FAIL	    -22
91 #define CUDBG_STATUS_DEVLOG_INT_FAIL	    -23
92 #define CUDBG_STATUS_ENTITY_NOT_FOUND	    -24
93 #define CUDBG_STATUS_DECOMPRESS_FAIL	    -25
94 #define CUDBG_STATUS_BUFFER_SHORT	    -26
95 #define CUDBG_METADATA_VERSION_MISMATCH     -27
96 #define CUDBG_STATUS_NOT_IMPLEMENTED	    -28
97 #define CUDBG_SYSTEM_ERROR		    -29
98 #define CUDBG_STATUS_MMAP_FAILED	    -30
99 #define CUDBG_STATUS_FILE_WRITE_FAILED	    -31
100 #define CUDBG_STATUS_CCLK_NOT_DEFINED	    -32
101 #define CUDBG_STATUS_FLASH_FULL            -33
102 #define CUDBG_STATUS_SECTOR_EMPTY          -34
103 #define CUDBG_STATUS_ENTITY_NOT_REQUESTED  -35
104 #define CUDBG_STATUS_NOT_SUPPORTED         -36
105 #define CUDBG_STATUS_FILE_READ_FAILED      -37
106 #define CUDBG_STATUS_CORRUPTED             -38
107 #define CUDBG_STATUS_INVALID_INDEX         -39
108 
109 #define CUDBG_MAJOR_VERSION		    1
110 #define CUDBG_MINOR_VERSION		    14
111 #define CUDBG_BUILD_VERSION		    0
112 
113 #define CUDBG_FILE_NAME_LEN 256
114 #define CUDBG_DIR_NAME_LEN  256
115 #define CUDBG_MAX_BITMAP_LEN 16
116 
117 static char ATTRIBUTE_UNUSED * err_msg[] = {
118 	"Success",
119 	"Unknown",
120 	"No space",
121 	"Flash write fail",
122 	"Flash read fail",
123 	"Undefined out buf",
124 	"Callback function undefined",
125 	"Print callback function undefined",
126 	"ADAP invalid",
127 	"Flash empty",
128 	"No adapter",
129 	"No signature",
130 	"Multiple registration",
131 	"Unregistered",
132 	"Undefined entity",
133 	"Reg failed",
134 	"Devlog failed",
135 	"Small buff",
136 	"Checksum mismatch",
137 	"No scratch memory",
138 	"Outbuff overflow",
139 	"Invalid buffer",
140 	"File open fail",
141 	"Devlog int fail",
142 	"Entity not found",
143 	"Decompress fail",
144 	"Buffer short",
145 	"Version mismatch",
146 	"Not implemented",
147 	"System error",
148 	"Mmap failed",
149 	"File write failed",
150 	"cclk not defined",
151 	"Flash full",
152 	"Sector empty",
153 	"Entity not requested",
154 	"Not supported",
155 	"File read fail",
156 	"Corrupted",
157 	"Invalid Index"
158 };
159 
160 enum CUDBG_DBG_ENTITY_TYPE {
161 	CUDBG_ALL	   = 0,
162 	CUDBG_REG_DUMP	   = 1,
163 	CUDBG_DEV_LOG	   = 2,
164 	CUDBG_CIM_LA	   = 3,
165 	CUDBG_CIM_MA_LA    = 4,
166 	CUDBG_CIM_QCFG	   = 5,
167 	CUDBG_CIM_IBQ_TP0  = 6,
168 	CUDBG_CIM_IBQ_TP1  = 7,
169 	CUDBG_CIM_IBQ_ULP  = 8,
170 	CUDBG_CIM_IBQ_SGE0 = 9,
171 	CUDBG_CIM_IBQ_SGE1 = 10,
172 	CUDBG_CIM_IBQ_NCSI = 11,
173 	CUDBG_CIM_OBQ_ULP0 = 12,
174 	CUDBG_CIM_OBQ_ULP1 = 13,
175 	CUDBG_CIM_OBQ_ULP2 = 14,
176 	CUDBG_CIM_OBQ_ULP3 = 15,
177 	CUDBG_CIM_OBQ_SGE  = 16,
178 	CUDBG_CIM_OBQ_NCSI = 17,
179 	CUDBG_EDC0	   = 18,
180 	CUDBG_EDC1	   = 19,
181 	CUDBG_MC0	   = 20,
182 	CUDBG_MC1	   = 21,
183 	CUDBG_RSS	   = 22,
184 	CUDBG_RSS_PF_CONF  = 23,
185 	CUDBG_RSS_KEY	   = 24,
186 	CUDBG_RSS_VF_CONF  = 25,
187 	CUDBG_RSS_CONF	   = 26,
188 	CUDBG_PATH_MTU	   = 27,
189 	CUDBG_SW_STATE	   = 28,
190 	CUDBG_WTP	   = 29,
191 	CUDBG_PM_STATS	   = 30,
192 	CUDBG_HW_SCHED	   = 31,
193 	CUDBG_TCP_STATS    = 32,
194 	CUDBG_TP_ERR_STATS = 33,
195 	CUDBG_FCOE_STATS   = 34,
196 	CUDBG_RDMA_STATS   = 35,
197 	CUDBG_TP_INDIRECT  = 36,
198 	CUDBG_SGE_INDIRECT = 37,
199 	CUDBG_CPL_STATS    = 38,
200 	CUDBG_DDP_STATS    = 39,
201 	CUDBG_WC_STATS	   = 40,
202 	CUDBG_ULPRX_LA	   = 41,
203 	CUDBG_LB_STATS	   = 42,
204 	CUDBG_TP_LA	   = 43,
205 	CUDBG_MEMINFO	   = 44,
206 	CUDBG_CIM_PIF_LA   = 45,
207 	CUDBG_CLK	   = 46,
208 	CUDBG_CIM_OBQ_RXQ0 = 47,
209 	CUDBG_CIM_OBQ_RXQ1 = 48,
210 	CUDBG_MAC_STATS    = 49,
211 	CUDBG_PCIE_INDIRECT = 50,
212 	CUDBG_PM_INDIRECT  = 51,
213 	CUDBG_FULL	   = 52,
214 	CUDBG_TX_RATE	   = 53,
215 	CUDBG_TID_INFO	   = 54,
216 	CUDBG_PCIE_CONFIG  = 55,
217 	CUDBG_DUMP_CONTEXT = 56,
218 	CUDBG_MPS_TCAM	   = 57,
219 	CUDBG_VPD_DATA	   = 58,
220 	CUDBG_LE_TCAM	   = 59,
221 	CUDBG_CCTRL	   = 60,
222 	CUDBG_MA_INDIRECT  = 61,
223 	CUDBG_ULPTX_LA	   = 62,
224 	CUDBG_EXT_ENTITY   = 63,
225 	CUDBG_UP_CIM_INDIRECT = 64,
226 	CUDBG_PBT_TABLE    = 65,
227 	CUDBG_MBOX_LOG     = 66,
228 	CUDBG_HMA_INDIRECT = 67,
229 	CUDBG_MAX_ENTITY   = 68,
230 };
231 
232 #define ENTITY_FLAG_NULL 0
233 #define ENTITY_FLAG_REGISTER 1
234 #define ENTITY_FLAG_BINARY 2
235 #define ENTITY_FLAG_FW_NO_ATTACH    3
236 
237 /* file_name matches Linux cxgb4 debugfs entry names. */
238 struct el {char *name; char *file_name; int bit; u32 flag; };
239 static struct el ATTRIBUTE_UNUSED entity_list[] = {
240 	{"all", "all", CUDBG_ALL, ENTITY_FLAG_NULL},
241 	{"regdump", "regdump", CUDBG_REG_DUMP, 1 << ENTITY_FLAG_REGISTER},
242 	{"devlog", "devlog", CUDBG_DEV_LOG, ENTITY_FLAG_NULL},
243 	{"cimla", "cim_la", CUDBG_CIM_LA, ENTITY_FLAG_NULL},
244 	{"cimmala", "cim_ma_la", CUDBG_CIM_MA_LA, ENTITY_FLAG_NULL},
245 	{"cimqcfg", "cim_qcfg", CUDBG_CIM_QCFG, ENTITY_FLAG_NULL},
246 	{"ibqtp0", "ibq_tp0", CUDBG_CIM_IBQ_TP0, ENTITY_FLAG_NULL},
247 	{"ibqtp1", "ibq_tp1", CUDBG_CIM_IBQ_TP1, ENTITY_FLAG_NULL},
248 	{"ibqulp", "ibq_ulp", CUDBG_CIM_IBQ_ULP, ENTITY_FLAG_NULL},
249 	{"ibqsge0", "ibq_sge0", CUDBG_CIM_IBQ_SGE0, ENTITY_FLAG_NULL},
250 	{"ibqsge1", "ibq_sge1", CUDBG_CIM_IBQ_SGE1, ENTITY_FLAG_NULL},
251 	{"ibqncsi", "ibq_ncsi", CUDBG_CIM_IBQ_NCSI, ENTITY_FLAG_NULL},
252 	{"obqulp0", "obq_ulp0", CUDBG_CIM_OBQ_ULP0, ENTITY_FLAG_NULL},
253 	{"obqulp1", "obq_ulp1", CUDBG_CIM_OBQ_ULP1, ENTITY_FLAG_NULL},
254 	{"obqulp2", "obq_ulp2", CUDBG_CIM_OBQ_ULP2, ENTITY_FLAG_NULL},
255 	{"obqulp3", "obq_ulp3", CUDBG_CIM_OBQ_ULP3, ENTITY_FLAG_NULL},
256 	{"obqsge", "obq_sge", CUDBG_CIM_OBQ_SGE, ENTITY_FLAG_NULL},
257 	{"obqncsi", "obq_ncsi", CUDBG_CIM_OBQ_NCSI, ENTITY_FLAG_NULL},
258 	{"edc0", "edc0", CUDBG_EDC0, (1 << ENTITY_FLAG_BINARY)},
259 	{"edc1", "edc1", CUDBG_EDC1, (1 << ENTITY_FLAG_BINARY)},
260 	{"mc0", "mc0", CUDBG_MC0, (1 << ENTITY_FLAG_BINARY)},
261 	{"mc1", "mc1", CUDBG_MC1, (1 << ENTITY_FLAG_BINARY)},
262 	{"rss", "rss", CUDBG_RSS, ENTITY_FLAG_NULL},
263 	{"rss_pf_config", "rss_pf_config", CUDBG_RSS_PF_CONF, ENTITY_FLAG_NULL},
264 	{"rss_key", "rss_key", CUDBG_RSS_KEY, ENTITY_FLAG_NULL},
265 	{"rss_vf_config", "rss_vf_config", CUDBG_RSS_VF_CONF, ENTITY_FLAG_NULL},
266 	{"rss_config", "rss_config", CUDBG_RSS_CONF, ENTITY_FLAG_NULL},
267 	{"pathmtu", "path_mtus", CUDBG_PATH_MTU, ENTITY_FLAG_NULL},
268 	{"swstate", "sw_state", CUDBG_SW_STATE, ENTITY_FLAG_NULL},
269 	{"wtp", "wtp", CUDBG_WTP, ENTITY_FLAG_NULL},
270 	{"pmstats", "pm_stats", CUDBG_PM_STATS, ENTITY_FLAG_NULL},
271 	{"hwsched", "hw_sched", CUDBG_HW_SCHED, ENTITY_FLAG_NULL},
272 	{"tcpstats", "tcp_stats", CUDBG_TCP_STATS, ENTITY_FLAG_NULL},
273 	{"tperrstats", "tp_err_stats", CUDBG_TP_ERR_STATS, ENTITY_FLAG_NULL},
274 	{"fcoestats", "fcoe_stats", CUDBG_FCOE_STATS, ENTITY_FLAG_NULL},
275 	{"rdmastats", "rdma_stats", CUDBG_RDMA_STATS, ENTITY_FLAG_NULL},
276 	{"tpindirect", "tp_indirect", CUDBG_TP_INDIRECT,
277 					1 << ENTITY_FLAG_REGISTER},
278 	{"sgeindirect", "sge_indirect", CUDBG_SGE_INDIRECT,
279 					1 << ENTITY_FLAG_REGISTER},
280 	{"cplstats", "cpl_stats", CUDBG_CPL_STATS, ENTITY_FLAG_NULL},
281 	{"ddpstats", "ddp_stats", CUDBG_DDP_STATS, ENTITY_FLAG_NULL},
282 	{"wcstats", "wc_stats", CUDBG_WC_STATS, ENTITY_FLAG_NULL},
283 	{"ulprxla", "ulprx_la", CUDBG_ULPRX_LA, ENTITY_FLAG_NULL},
284 	{"lbstats", "lb_stats", CUDBG_LB_STATS, ENTITY_FLAG_NULL},
285 	{"tpla", "tp_la", CUDBG_TP_LA, ENTITY_FLAG_NULL},
286 	{"meminfo", "meminfo", CUDBG_MEMINFO, ENTITY_FLAG_NULL},
287 	{"cimpifla", "cim_pif_la", CUDBG_CIM_PIF_LA, ENTITY_FLAG_NULL},
288 	{"clk", "clk", CUDBG_CLK, ENTITY_FLAG_NULL},
289 	{"obq_sge_rx_q0", "obq_sge_rx_q0", CUDBG_CIM_OBQ_RXQ0,
290 					ENTITY_FLAG_NULL},
291 	{"obq_sge_rx_q1", "obq_sge_rx_q1", CUDBG_CIM_OBQ_RXQ1,
292 					ENTITY_FLAG_NULL},
293 	{"macstats", "mac_stats", CUDBG_MAC_STATS, ENTITY_FLAG_NULL},
294 	{"pcieindirect", "pcie_indirect", CUDBG_PCIE_INDIRECT,
295 					1 << ENTITY_FLAG_REGISTER},
296 	{"pmindirect", "pm_indirect", CUDBG_PM_INDIRECT,
297 				1 << ENTITY_FLAG_REGISTER},
298 	{"full", "full", CUDBG_FULL, ENTITY_FLAG_NULL},
299 	{"txrate", "tx_rate", CUDBG_TX_RATE, ENTITY_FLAG_NULL},
300 	{"tidinfo", "tids", CUDBG_TID_INFO, ENTITY_FLAG_NULL |
301 				(1 << ENTITY_FLAG_FW_NO_ATTACH)},
302 	{"pcieconfig", "pcie_config", CUDBG_PCIE_CONFIG, ENTITY_FLAG_NULL},
303 	{"dumpcontext", "dump_context", CUDBG_DUMP_CONTEXT, ENTITY_FLAG_NULL},
304 	{"mpstcam", "mps_tcam", CUDBG_MPS_TCAM, ENTITY_FLAG_NULL},
305 	{"vpddata", "vpd_data", CUDBG_VPD_DATA, ENTITY_FLAG_NULL},
306 	{"letcam", "le_tcam", CUDBG_LE_TCAM, ENTITY_FLAG_NULL},
307 	{"cctrl", "cctrl", CUDBG_CCTRL, ENTITY_FLAG_NULL},
308 	{"maindirect", "ma_indirect", CUDBG_MA_INDIRECT,
309 				1 << ENTITY_FLAG_REGISTER},
310 	{"ulptxla", "ulptx_la", CUDBG_ULPTX_LA, ENTITY_FLAG_NULL},
311 	{"extentity", "ext_entity", CUDBG_EXT_ENTITY, ENTITY_FLAG_NULL},
312 	{"upcimindirect", "up_cim_indirect", CUDBG_UP_CIM_INDIRECT,
313 					1 << ENTITY_FLAG_REGISTER},
314 	{"pbttables", "pbt_tables", CUDBG_PBT_TABLE, ENTITY_FLAG_NULL},
315 	{"mboxlog", "mboxlog", CUDBG_MBOX_LOG, ENTITY_FLAG_NULL},
316 	{"hmaindirect", "hma_indirect", CUDBG_HMA_INDIRECT,
317 				1 << ENTITY_FLAG_REGISTER},
318 };
319 
320 #ifdef _KERNEL
321 typedef int (*cudbg_print_cb) (dev_info_t *dip, ...);
322 #else
323 typedef int (*cudbg_print_cb) (char *, ...);
324 #endif
325 
326 struct cudbg_init_hdr {
327 	u8   major_ver;
328 	u8   minor_ver;
329 	u8   build_ver;
330 	u8   res;
331 	u16  init_struct_size;
332 };
333 
334 struct cudbg_flash_hdr {
335 	u32 signature;
336 	u8 major_ver;
337 	u8 minor_ver;
338 	u8 build_ver;
339 	u8 res;
340 	u64 timestamp;
341 	u64 time_res;
342 	u32 hdr_len;
343 	u32 data_len;
344 	u32 hdr_flags;
345 	u32 sec_seq_no;
346 	u32 reserved[22];
347 };
348 
349 struct cudbg_param {
350 	u16			 param_type;
351 	u16			 reserved;
352 	union {
353 		struct {
354 			u32 memtype;	/* which memory (EDC0, EDC1, MC) */
355 			u32 start;	/* start of log in firmware memory */
356 			u32 size;	/* size of log */
357 		} devlog_param;
358 		struct {
359 			struct mbox_cmd_log *log;
360 			u16 mbox_cmds;
361 		} mboxlog_param;
362 		struct {
363 			u8 caller_string[100];
364 			u8 os_type;
365 		} sw_state_param;
366 		u64 time;
367 		u8 tcb_bit_param;
368 		void *adap;
369 		void *access_lock;
370 	} u;
371 };
372 
373 /* params for tcb_bit_param */
374 #define CUDBG_TCB_BRIEF_PARAM      0x1
375 #define CUDBG_TCB_FROM_CARD_PARAM  0x2
376 #define CUDBG_TCB_AS_SCB_PARAM     0x4
377 
378 enum {
379         /* params for os_type */
380         CUDBG_OS_TYPE_WINDOWS = 1,
381         CUDBG_OS_TYPE_LINUX = 2,
382         CUDBG_OS_TYPE_ESX = 3,
383         CUDBG_OS_TYPE_UNKNOWN = 4,
384 };
385 
386 /*
387  * * What is OFFLINE_VIEW_ONLY mode?
388  *
389  * cudbg frame work will be used only to interpret previously collected
390  * data store in a file (i.e NOT hw flash)
391  */
392 
393 struct cudbg_init {
394 	struct cudbg_init_hdr	 header;
395 	struct adapter		 *adap;		 /* Pointer to adapter structure
396 						    with filled fields */
397 	cudbg_print_cb		 print;		 /* Platform dependent print
398 						    function */
399 	u32			 verbose:1;	 /* Turn on verbose print */
400 	u32			 use_flash:1;	 /* Use flash to collect or view
401 						    debug */
402 	u32			 full_mode:1;	 /* If set, cudbg will pull in
403 						    common code */
404 	u32			 no_compress:1;  /* Dont compress will storing
405 						    the collected debug */
406 	u32			 info:1;	 /* Show just the info, Dont
407 						    interpret */
408 	u32			 reserved:27;
409 	u8			 dbg_bitmap[CUDBG_MAX_BITMAP_LEN];
410 						/* Bit map to select the dbg
411 						    data type to be collected
412 						    or viewed */
413 };
414 
415 struct cudbg_private {
416 	struct cudbg_init  dbg_init;
417 #ifdef _KERNEL
418 	struct cudbg_flash_sec_info  sec_info;
419 #endif
420 };
421 
422 /********************************* Helper functions *************************/
423 void set_dbg_bitmap(u8 *bitmap, enum CUDBG_DBG_ENTITY_TYPE type);
424 void reset_dbg_bitmap(u8 *bitmap, enum CUDBG_DBG_ENTITY_TYPE type);
425 struct cudbg_init * cudbg_get_init(void *handle);
426 
427 /**
428  *  cudbg_collect - Collect and store debug information.
429  *  ## Parameters ##
430  *  @handle : A pointer returned by cudbg_alloc_handle.
431  *  @outbuf : pointer to output buffer, to store the collected information
432  *	      or to use it as a scratch buffer in case HW flash is used to
433  *	      store the debug information.
434  *  @outbuf_size : Size of output buffer.
435  *  ##	Return ##
436  *  If the function succeeds, the return value will be size of debug information
437  *  collected and stored.
438  *  -ve value represent error.
439  */
440 int cudbg_collect(void *handle, void *outbuf, u32 *outbuf_size);
441 
442 int cudbg_view(void *handle, void *pinbuf, u32 inbuf_size,
443                void *poutbuf, s64 *poutbuf_size);
444 void init_cudbg_hdr(struct cudbg_init_hdr *hdr);
445 void * cudbg_alloc_handle(void);
446 void cudbg_free_handle(void *handle);
447 #endif /* _CUDBG_IF_H_ */
448