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1/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
2 *
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 */
12
13#ifndef _CORESIGHT_CORESIGHT_ETM_H
14#define _CORESIGHT_CORESIGHT_ETM_H
15
16#include <linux/spinlock.h>
17#include "coresight-priv.h"
18
19/*
20 * Device registers:
21 * 0x000 - 0x2FC: Trace registers
22 * 0x300 - 0x314: Management registers
23 * 0x318 - 0xEFC: Trace registers
24 * 0xF00: Management registers
25 * 0xFA0 - 0xFA4: Trace registers
26 * 0xFA8 - 0xFFC: Management registers
27 */
28/* Trace registers (0x000-0x2FC) */
29/* Main control and configuration registers */
30#define TRCPRGCTLR 0x004
31#define TRCPROCSELR 0x008
32#define TRCSTATR 0x00C
33#define TRCCONFIGR 0x010
34#define TRCAUXCTLR 0x018
35#define TRCEVENTCTL0R 0x020
36#define TRCEVENTCTL1R 0x024
37#define TRCSTALLCTLR 0x02C
38#define TRCTSCTLR 0x030
39#define TRCSYNCPR 0x034
40#define TRCCCCTLR 0x038
41#define TRCBBCTLR 0x03C
42#define TRCTRACEIDR 0x040
43#define TRCQCTLR 0x044
44/* Filtering control registers */
45#define TRCVICTLR 0x080
46#define TRCVIIECTLR 0x084
47#define TRCVISSCTLR 0x088
48#define TRCVIPCSSCTLR 0x08C
49#define TRCVDCTLR 0x0A0
50#define TRCVDSACCTLR 0x0A4
51#define TRCVDARCCTLR 0x0A8
52/* Derived resources registers */
53#define TRCSEQEVRn(n) (0x100 + (n * 4))
54#define TRCSEQRSTEVR 0x118
55#define TRCSEQSTR 0x11C
56#define TRCEXTINSELR 0x120
57#define TRCCNTRLDVRn(n) (0x140 + (n * 4))
58#define TRCCNTCTLRn(n) (0x150 + (n * 4))
59#define TRCCNTVRn(n) (0x160 + (n * 4))
60/* ID registers */
61#define TRCIDR8 0x180
62#define TRCIDR9 0x184
63#define TRCIDR10 0x188
64#define TRCIDR11 0x18C
65#define TRCIDR12 0x190
66#define TRCIDR13 0x194
67#define TRCIMSPEC0 0x1C0
68#define TRCIMSPECn(n) (0x1C0 + (n * 4))
69#define TRCIDR0 0x1E0
70#define TRCIDR1 0x1E4
71#define TRCIDR2 0x1E8
72#define TRCIDR3 0x1EC
73#define TRCIDR4 0x1F0
74#define TRCIDR5 0x1F4
75#define TRCIDR6 0x1F8
76#define TRCIDR7 0x1FC
77/* Resource selection registers */
78#define TRCRSCTLRn(n) (0x200 + (n * 4))
79/* Single-shot comparator registers */
80#define TRCSSCCRn(n) (0x280 + (n * 4))
81#define TRCSSCSRn(n) (0x2A0 + (n * 4))
82#define TRCSSPCICRn(n) (0x2C0 + (n * 4))
83/* Management registers (0x300-0x314) */
84#define TRCOSLAR 0x300
85#define TRCOSLSR 0x304
86#define TRCPDCR 0x310
87#define TRCPDSR 0x314
88/* Trace registers (0x318-0xEFC) */
89/* Comparator registers */
90#define TRCACVRn(n) (0x400 + (n * 8))
91#define TRCACATRn(n) (0x480 + (n * 8))
92#define TRCDVCVRn(n) (0x500 + (n * 16))
93#define TRCDVCMRn(n) (0x580 + (n * 16))
94#define TRCCIDCVRn(n) (0x600 + (n * 8))
95#define TRCVMIDCVRn(n) (0x640 + (n * 8))
96#define TRCCIDCCTLR0 0x680
97#define TRCCIDCCTLR1 0x684
98#define TRCVMIDCCTLR0 0x688
99#define TRCVMIDCCTLR1 0x68C
100/* Management register (0xF00) */
101/* Integration control registers */
102#define TRCITCTRL 0xF00
103/* Trace registers (0xFA0-0xFA4) */
104/* Claim tag registers */
105#define TRCCLAIMSET 0xFA0
106#define TRCCLAIMCLR 0xFA4
107/* Management registers (0xFA8-0xFFC) */
108#define TRCDEVAFF0 0xFA8
109#define TRCDEVAFF1 0xFAC
110#define TRCLAR 0xFB0
111#define TRCLSR 0xFB4
112#define TRCAUTHSTATUS 0xFB8
113#define TRCDEVARCH 0xFBC
114#define TRCDEVID 0xFC8
115#define TRCDEVTYPE 0xFCC
116#define TRCPIDR4 0xFD0
117#define TRCPIDR5 0xFD4
118#define TRCPIDR6 0xFD8
119#define TRCPIDR7 0xFDC
120#define TRCPIDR0 0xFE0
121#define TRCPIDR1 0xFE4
122#define TRCPIDR2 0xFE8
123#define TRCPIDR3 0xFEC
124#define TRCCIDR0 0xFF0
125#define TRCCIDR1 0xFF4
126#define TRCCIDR2 0xFF8
127#define TRCCIDR3 0xFFC
128
129/* ETMv4 resources */
130#define ETM_MAX_NR_PE 8
131#define ETMv4_MAX_CNTR 4
132#define ETM_MAX_SEQ_STATES 4
133#define ETM_MAX_EXT_INP_SEL 4
134#define ETM_MAX_EXT_INP 256
135#define ETM_MAX_EXT_OUT 4
136#define ETM_MAX_SINGLE_ADDR_CMP 16
137#define ETM_MAX_ADDR_RANGE_CMP (ETM_MAX_SINGLE_ADDR_CMP / 2)
138#define ETM_MAX_DATA_VAL_CMP 8
139#define ETMv4_MAX_CTXID_CMP 8
140#define ETM_MAX_VMID_CMP 8
141#define ETM_MAX_PE_CMP 8
142#define ETM_MAX_RES_SEL 16
143#define ETM_MAX_SS_CMP 8
144
145#define ETM_ARCH_V4 0x40
146#define ETMv4_SYNC_MASK 0x1F
147#define ETM_CYC_THRESHOLD_MASK 0xFFF
148#define ETMv4_EVENT_MASK 0xFF
149#define ETM_CNTR_MAX_VAL 0xFFFF
150#define ETM_TRACEID_MASK 0x3f
151
152/* ETMv4 programming modes */
153#define ETM_MODE_EXCLUDE BIT(0)
154#define ETM_MODE_LOAD BIT(1)
155#define ETM_MODE_STORE BIT(2)
156#define ETM_MODE_LOAD_STORE BIT(3)
157#define ETM_MODE_BB BIT(4)
158#define ETMv4_MODE_CYCACC BIT(5)
159#define ETMv4_MODE_CTXID BIT(6)
160#define ETM_MODE_VMID BIT(7)
161#define ETM_MODE_COND(val) BMVAL(val, 8, 10)
162#define ETMv4_MODE_TIMESTAMP BIT(11)
163#define ETM_MODE_RETURNSTACK BIT(12)
164#define ETM_MODE_QELEM(val) BMVAL(val, 13, 14)
165#define ETM_MODE_DATA_TRACE_ADDR BIT(15)
166#define ETM_MODE_DATA_TRACE_VAL BIT(16)
167#define ETM_MODE_ISTALL BIT(17)
168#define ETM_MODE_DSTALL BIT(18)
169#define ETM_MODE_ATB_TRIGGER BIT(19)
170#define ETM_MODE_LPOVERRIDE BIT(20)
171#define ETM_MODE_ISTALL_EN BIT(21)
172#define ETM_MODE_DSTALL_EN BIT(22)
173#define ETM_MODE_INSTPRIO BIT(23)
174#define ETM_MODE_NOOVERFLOW BIT(24)
175#define ETM_MODE_TRACE_RESET BIT(25)
176#define ETM_MODE_TRACE_ERR BIT(26)
177#define ETM_MODE_VIEWINST_STARTSTOP BIT(27)
178#define ETMv4_MODE_ALL 0xFFFFFFF
179
180#define TRCSTATR_IDLE_BIT 0
181
182/**
183 * struct etm4_drvdata - specifics associated to an ETM component
184 * @base: Memory mapped base address for this component.
185 * @dev: The device entity associated to this component.
186 * @csdev: Component vitals needed by the framework.
187 * @spinlock: Only one at a time pls.
188 * @cpu: The cpu this component is affined to.
189 * @arch: ETM version number.
190 * @enable: Is this ETM currently tracing.
191 * @sticky_enable: true if ETM base configuration has been done.
192 * @boot_enable:True if we should start tracing at boot time.
193 * @os_unlock: True if access to management registers is allowed.
194 * @nr_pe: The number of processing entity available for tracing.
195 * @nr_pe_cmp: The number of processing entity comparator inputs that are
196 * available for tracing.
197 * @nr_addr_cmp:Number of pairs of address comparators available
198 * as found in ETMIDR4 0-3.
199 * @nr_cntr: Number of counters as found in ETMIDR5 bit 28-30.
200 * @nr_ext_inp: Number of external input.
201 * @numcidc: Number of contextID comparators.
202 * @numvmidc: Number of VMID comparators.
203 * @nrseqstate: The number of sequencer states that are implemented.
204 * @nr_event: Indicates how many events the trace unit support.
205 * @nr_resource:The number of resource selection pairs available for tracing.
206 * @nr_ss_cmp: Number of single-shot comparator controls that are available.
207 * @mode: Controls various modes supported by this ETM.
208 * @trcid: value of the current ID for this component.
209 * @trcid_size: Indicates the trace ID width.
210 * @instrp0: Tracing of load and store instructions
211 * as P0 elements is supported.
212 * @trccond: If the trace unit supports conditional
213 * instruction tracing.
214 * @retstack: Indicates if the implementation supports a return stack.
215 * @trc_error: Whether a trace unit can trace a system
216 * error exception.
217 * @atbtrig: If the implementation can support ATB triggers
218 * @lpoverride: If the implementation can support low-power state over.
219 * @pe_sel: Controls which PE to trace.
220 * @cfg: Controls the tracing options.
221 * @eventctrl0: Controls the tracing of arbitrary events.
222 * @eventctrl1: Controls the behavior of the events that @event_ctrl0 selects.
223 * @stallctl: If functionality that prevents trace unit buffer overflows
224 * is available.
225 * @sysstall: Does the system support stall control of the PE?
226 * @nooverflow: Indicate if overflow prevention is supported.
227 * @stall_ctrl: Enables trace unit functionality that prevents trace
228 * unit buffer overflows.
229 * @ts_size: Global timestamp size field.
230 * @ts_ctrl: Controls the insertion of global timestamps in the
231 * trace streams.
232 * @syncpr: Indicates if an implementation has a fixed
233 * synchronization period.
234 * @syncfreq: Controls how often trace synchronization requests occur.
235 * @trccci: Indicates if the trace unit supports cycle counting
236 * for instruction.
237 * @ccsize: Indicates the size of the cycle counter in bits.
238 * @ccitmin: minimum value that can be programmed in
239 * the TRCCCCTLR register.
240 * @ccctlr: Sets the threshold value for cycle counting.
241 * @trcbb: Indicates if the trace unit supports branch broadcast tracing.
242 * @q_support: Q element support characteristics.
243 * @vinst_ctrl: Controls instruction trace filtering.
244 * @viiectlr: Set or read, the address range comparators.
245 * @vissctlr: Set, or read, the single address comparators that control the
246 * ViewInst start-stop logic.
247 * @vipcssctlr: Set, or read, which PE comparator inputs can control the
248 * ViewInst start-stop logic.
249 * @seq_idx: Sequencor index selector.
250 * @seq_ctrl: Control for the sequencer state transition control register.
251 * @seq_rst: Moves the sequencer to state 0 when a programmed event occurs.
252 * @seq_state: Set, or read the sequencer state.
253 * @cntr_idx: Counter index seletor.
254 * @cntrldvr: Sets or returns the reload count value for a counter.
255 * @cntr_ctrl: Controls the operation of a counter.
256 * @cntr_val: Sets or returns the value for a counter.
257 * @res_idx: Resource index selector.
258 * @res_ctrl: Controls the selection of the resources in the trace unit.
259 * @ss_ctrl: Controls the corresponding single-shot comparator resource.
260 * @ss_status: The status of the corresponding single-shot comparator.
261 * @ss_pe_cmp: Selects the PE comparator inputs for Single-shot control.
262 * @addr_idx: Address comparator index selector.
263 * @addr_val: Value for address comparator.
264 * @addr_acc: Address comparator access type.
265 * @addr_type: Current status of the comparator register.
266 * @ctxid_idx: Context ID index selector.
267 * @ctxid_size: Size of the context ID field to consider.
268 * @ctxid_pid: Value of the context ID comparator.
269 * @ctxid_vpid: Virtual PID seen by users if PID namespace is enabled, otherwise
270 * the same value of ctxid_pid.
271 * @ctxid_mask0:Context ID comparator mask for comparator 0-3.
272 * @ctxid_mask1:Context ID comparator mask for comparator 4-7.
273 * @vmid_idx: VM ID index selector.
274 * @vmid_size: Size of the VM ID comparator to consider.
275 * @vmid_val: Value of the VM ID comparator.
276 * @vmid_mask0: VM ID comparator mask for comparator 0-3.
277 * @vmid_mask1: VM ID comparator mask for comparator 4-7.
278 * @s_ex_level: In secure state, indicates whether instruction tracing is
279 * supported for the corresponding Exception level.
280 * @ns_ex_level:In non-secure state, indicates whether instruction tracing is
281 * supported for the corresponding Exception level.
282 * @ext_inp: External input selection.
283 */
284struct etmv4_drvdata {
285 void __iomem *base;
286 struct device *dev;
287 struct coresight_device *csdev;
288 spinlock_t spinlock;
289 int cpu;
290 u8 arch;
291 bool enable;
292 bool sticky_enable;
293 bool boot_enable;
294 bool os_unlock;
295 u8 nr_pe;
296 u8 nr_pe_cmp;
297 u8 nr_addr_cmp;
298 u8 nr_cntr;
299 u8 nr_ext_inp;
300 u8 numcidc;
301 u8 numvmidc;
302 u8 nrseqstate;
303 u8 nr_event;
304 u8 nr_resource;
305 u8 nr_ss_cmp;
306 u32 mode;
307 u8 trcid;
308 u8 trcid_size;
309 bool instrp0;
310 bool trccond;
311 bool retstack;
312 bool trc_error;
313 bool atbtrig;
314 bool lpoverride;
315 u32 pe_sel;
316 u32 cfg;
317 u32 eventctrl0;
318 u32 eventctrl1;
319 bool stallctl;
320 bool sysstall;
321 bool nooverflow;
322 u32 stall_ctrl;
323 u8 ts_size;
324 u32 ts_ctrl;
325 bool syncpr;
326 u32 syncfreq;
327 bool trccci;
328 u8 ccsize;
329 u8 ccitmin;
330 u32 ccctlr;
331 bool trcbb;
332 u32 bb_ctrl;
333 bool q_support;
334 u32 vinst_ctrl;
335 u32 viiectlr;
336 u32 vissctlr;
337 u32 vipcssctlr;
338 u8 seq_idx;
339 u32 seq_ctrl[ETM_MAX_SEQ_STATES];
340 u32 seq_rst;
341 u32 seq_state;
342 u8 cntr_idx;
343 u32 cntrldvr[ETMv4_MAX_CNTR];
344 u32 cntr_ctrl[ETMv4_MAX_CNTR];
345 u32 cntr_val[ETMv4_MAX_CNTR];
346 u8 res_idx;
347 u32 res_ctrl[ETM_MAX_RES_SEL];
348 u32 ss_ctrl[ETM_MAX_SS_CMP];
349 u32 ss_status[ETM_MAX_SS_CMP];
350 u32 ss_pe_cmp[ETM_MAX_SS_CMP];
351 u8 addr_idx;
352 u64 addr_val[ETM_MAX_SINGLE_ADDR_CMP];
353 u64 addr_acc[ETM_MAX_SINGLE_ADDR_CMP];
354 u8 addr_type[ETM_MAX_SINGLE_ADDR_CMP];
355 u8 ctxid_idx;
356 u8 ctxid_size;
357 u64 ctxid_pid[ETMv4_MAX_CTXID_CMP];
358 u64 ctxid_vpid[ETMv4_MAX_CTXID_CMP];
359 u32 ctxid_mask0;
360 u32 ctxid_mask1;
361 u8 vmid_idx;
362 u8 vmid_size;
363 u64 vmid_val[ETM_MAX_VMID_CMP];
364 u32 vmid_mask0;
365 u32 vmid_mask1;
366 u8 s_ex_level;
367 u8 ns_ex_level;
368 u32 ext_inp;
369};
370
371/* Address comparator access types */
372enum etm_addr_acctype {
373 ETM_INSTR_ADDR,
374 ETM_DATA_LOAD_ADDR,
375 ETM_DATA_STORE_ADDR,
376 ETM_DATA_LOAD_STORE_ADDR,
377};
378
379/* Address comparator context types */
380enum etm_addr_ctxtype {
381 ETM_CTX_NONE,
382 ETM_CTX_CTXID,
383 ETM_CTX_VMID,
384 ETM_CTX_CTXID_VMID,
385};
386
387enum etm_addr_type {
388 ETM_ADDR_TYPE_NONE,
389 ETM_ADDR_TYPE_SINGLE,
390 ETM_ADDR_TYPE_RANGE,
391 ETM_ADDR_TYPE_START,
392 ETM_ADDR_TYPE_STOP,
393};
394#endif