1ad0dfdfdSMathieu Poirier /* SPDX-License-Identifier: GPL-2.0 */
2ad0dfdfdSMathieu Poirier /*
3ad0dfdfdSMathieu Poirier * Copyright (c) 2012, The Linux Foundation. All rights reserved.
4a06ae860SPratik Patel */
5a06ae860SPratik Patel
6a06ae860SPratik Patel #ifndef _LINUX_CORESIGHT_H
7a06ae860SPratik Patel #define _LINUX_CORESIGHT_H
8a06ae860SPratik Patel
9*73d779a0SAnshuman Khandual #include <linux/amba/bus.h>
10*73d779a0SAnshuman Khandual #include <linux/clk.h>
11a06ae860SPratik Patel #include <linux/device.h>
126e736c60SSuzuki K Poulose #include <linux/io.h>
13882d5e11SMathieu Poirier #include <linux/perf_event.h>
14ff63ec13SMark Brown #include <linux/sched.h>
15a06ae860SPratik Patel
16a06ae860SPratik Patel /* Peripheral id registers (0xFD0-0xFEC) */
17a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR4 0xfd0
18a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR5 0xfd4
19a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR6 0xfd8
20a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR7 0xfdC
21a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR0 0xfe0
22a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR1 0xfe4
23a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR2 0xfe8
24a06ae860SPratik Patel #define CORESIGHT_PERIPHIDR3 0xfeC
25a06ae860SPratik Patel /* Component id registers (0xFF0-0xFFC) */
26a06ae860SPratik Patel #define CORESIGHT_COMPIDR0 0xff0
27a06ae860SPratik Patel #define CORESIGHT_COMPIDR1 0xff4
28a06ae860SPratik Patel #define CORESIGHT_COMPIDR2 0xff8
29a06ae860SPratik Patel #define CORESIGHT_COMPIDR3 0xffC
30a06ae860SPratik Patel
31a06ae860SPratik Patel #define ETM_ARCH_V3_3 0x23
32a06ae860SPratik Patel #define ETM_ARCH_V3_5 0x25
33a06ae860SPratik Patel #define PFT_ARCH_V1_0 0x30
34a06ae860SPratik Patel #define PFT_ARCH_V1_1 0x31
35a06ae860SPratik Patel
36a06ae860SPratik Patel #define CORESIGHT_UNLOCK 0xc5acce55
37a06ae860SPratik Patel
38a06ae860SPratik Patel extern struct bus_type coresight_bustype;
39a06ae860SPratik Patel
40a06ae860SPratik Patel enum coresight_dev_type {
41a06ae860SPratik Patel CORESIGHT_DEV_TYPE_SINK,
42a06ae860SPratik Patel CORESIGHT_DEV_TYPE_LINK,
43a06ae860SPratik Patel CORESIGHT_DEV_TYPE_LINKSINK,
44a06ae860SPratik Patel CORESIGHT_DEV_TYPE_SOURCE,
458a091d84SSuzuki K Poulose CORESIGHT_DEV_TYPE_HELPER,
461b5b1646SJames Clark CORESIGHT_DEV_TYPE_MAX
47a06ae860SPratik Patel };
48a06ae860SPratik Patel
49a06ae860SPratik Patel enum coresight_dev_subtype_sink {
509d3ba0b6SHao Zhang CORESIGHT_DEV_SUBTYPE_SINK_DUMMY,
51a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_SINK_PORT,
52a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_SINK_BUFFER,
530336bdfdSMike Leach CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM,
542cd87a7bSAnshuman Khandual CORESIGHT_DEV_SUBTYPE_SINK_PERCPU_SYSMEM,
55a06ae860SPratik Patel };
56a06ae860SPratik Patel
57a06ae860SPratik Patel enum coresight_dev_subtype_link {
58a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_LINK_MERG,
59a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_LINK_SPLIT,
60a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_LINK_FIFO,
61a06ae860SPratik Patel };
62a06ae860SPratik Patel
63a06ae860SPratik Patel enum coresight_dev_subtype_source {
64a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_SOURCE_PROC,
65a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_SOURCE_BUS,
66a06ae860SPratik Patel CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE,
67b3c71626SMao Jinlong CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS,
68a06ae860SPratik Patel };
69a06ae860SPratik Patel
708a091d84SSuzuki K Poulose enum coresight_dev_subtype_helper {
71fcacb5c1SSuzuki K Poulose CORESIGHT_DEV_SUBTYPE_HELPER_CATU,
721b5b1646SJames Clark CORESIGHT_DEV_SUBTYPE_HELPER_ECT_CTI
73835d722bSMike Leach };
74835d722bSMike Leach
75a06ae860SPratik Patel /**
7600b78e8bSSuzuki K Poulose * union coresight_dev_subtype - further characterisation of a type
77a06ae860SPratik Patel * @sink_subtype: type of sink this component is, as defined
7800b78e8bSSuzuki K Poulose * by @coresight_dev_subtype_sink.
79a06ae860SPratik Patel * @link_subtype: type of link this component is, as defined
8000b78e8bSSuzuki K Poulose * by @coresight_dev_subtype_link.
81a06ae860SPratik Patel * @source_subtype: type of source this component is, as defined
8200b78e8bSSuzuki K Poulose * by @coresight_dev_subtype_source.
838a091d84SSuzuki K Poulose * @helper_subtype: type of helper this component is, as defined
848a091d84SSuzuki K Poulose * by @coresight_dev_subtype_helper.
85a06ae860SPratik Patel */
8600b78e8bSSuzuki K Poulose union coresight_dev_subtype {
8700b78e8bSSuzuki K Poulose /* We have some devices which acts as LINK and SINK */
8800b78e8bSSuzuki K Poulose struct {
89a06ae860SPratik Patel enum coresight_dev_subtype_sink sink_subtype;
90a06ae860SPratik Patel enum coresight_dev_subtype_link link_subtype;
9100b78e8bSSuzuki K Poulose };
92a06ae860SPratik Patel enum coresight_dev_subtype_source source_subtype;
938a091d84SSuzuki K Poulose enum coresight_dev_subtype_helper helper_subtype;
94a06ae860SPratik Patel };
95a06ae860SPratik Patel
96a06ae860SPratik Patel /**
97d375b356SSuzuki K Poulose * struct coresight_platform_data - data harvested from the firmware
98d375b356SSuzuki K Poulose * specification.
99d375b356SSuzuki K Poulose *
10081d0ea76SJames Clark * @nr_inconns: Number of elements for the input connections.
10181d0ea76SJames Clark * @nr_outconns: Number of elements for the output connections.
1024e8fe7e5SJames Clark * @out_conns: Array of nr_outconns pointers to connections from this
1034e8fe7e5SJames Clark * component.
104e3f4e687SJames Clark * @in_conns: Sparse array of pointers to input connections. Sparse
105e3f4e687SJames Clark * because the source device owns the connection so when it's
106e3f4e687SJames Clark * unloaded the connection leaves an empty slot.
107a06ae860SPratik Patel */
108a06ae860SPratik Patel struct coresight_platform_data {
10981d0ea76SJames Clark int nr_inconns;
11081d0ea76SJames Clark int nr_outconns;
1114e8fe7e5SJames Clark struct coresight_connection **out_conns;
112e3f4e687SJames Clark struct coresight_connection **in_conns;
113a06ae860SPratik Patel };
114a06ae860SPratik Patel
115a06ae860SPratik Patel /**
1166e736c60SSuzuki K Poulose * struct csdev_access - Abstraction of a CoreSight device access.
1176e736c60SSuzuki K Poulose *
1186e736c60SSuzuki K Poulose * @io_mem : True if the device has memory mapped I/O
1196e736c60SSuzuki K Poulose * @base : When io_mem == true, base address of the component
1206e736c60SSuzuki K Poulose * @read : Read from the given "offset" of the given instance.
1216e736c60SSuzuki K Poulose * @write : Write "val" to the given "offset".
1226e736c60SSuzuki K Poulose */
1236e736c60SSuzuki K Poulose struct csdev_access {
1246e736c60SSuzuki K Poulose bool io_mem;
1256e736c60SSuzuki K Poulose union {
1266e736c60SSuzuki K Poulose void __iomem *base;
1276e736c60SSuzuki K Poulose struct {
1286e736c60SSuzuki K Poulose u64 (*read)(u32 offset, bool relaxed, bool _64bit);
1296e736c60SSuzuki K Poulose void (*write)(u64 val, u32 offset, bool relaxed,
1306e736c60SSuzuki K Poulose bool _64bit);
1316e736c60SSuzuki K Poulose };
1326e736c60SSuzuki K Poulose };
1336e736c60SSuzuki K Poulose };
1346e736c60SSuzuki K Poulose
1356e736c60SSuzuki K Poulose #define CSDEV_ACCESS_IOMEM(_addr) \
1366e736c60SSuzuki K Poulose ((struct csdev_access) { \
1376e736c60SSuzuki K Poulose .io_mem = true, \
1386e736c60SSuzuki K Poulose .base = (_addr), \
1396e736c60SSuzuki K Poulose })
1406e736c60SSuzuki K Poulose
1416e736c60SSuzuki K Poulose /**
142a06ae860SPratik Patel * struct coresight_desc - description of a component required from drivers
143a06ae860SPratik Patel * @type: as defined by @coresight_dev_type.
144a06ae860SPratik Patel * @subtype: as defined by @coresight_dev_subtype.
145a06ae860SPratik Patel * @ops: generic operations for this component, as defined
1462ede79a6SSuzuki K Poulose * by @coresight_ops.
147a06ae860SPratik Patel * @pdata: platform data collected from DT.
148a06ae860SPratik Patel * @dev: The device entity associated to this component.
149a06ae860SPratik Patel * @groups: operations specific to this component. These will end up
1502ede79a6SSuzuki K Poulose * in the component's sysfs sub-directory.
1512ede79a6SSuzuki K Poulose * @name: name for the coresight device, also shown under sysfs.
1526e736c60SSuzuki K Poulose * @access: Describe access to the device
153a06ae860SPratik Patel */
154a06ae860SPratik Patel struct coresight_desc {
155a06ae860SPratik Patel enum coresight_dev_type type;
15600b78e8bSSuzuki K Poulose union coresight_dev_subtype subtype;
157a06ae860SPratik Patel const struct coresight_ops *ops;
158a06ae860SPratik Patel struct coresight_platform_data *pdata;
159a06ae860SPratik Patel struct device *dev;
160a06ae860SPratik Patel const struct attribute_group **groups;
1612ede79a6SSuzuki K Poulose const char *name;
1626e736c60SSuzuki K Poulose struct csdev_access access;
163a06ae860SPratik Patel };
164a06ae860SPratik Patel
165a06ae860SPratik Patel /**
166a06ae860SPratik Patel * struct coresight_connection - representation of a single connection
167d49c9cf1SJames Clark * @src_port: a connection's output port number.
168d49c9cf1SJames Clark * @dest_port: destination's input port number @src_port is connected to.
169d49c9cf1SJames Clark * @dest_fwnode: destination component's fwnode handle.
170d49c9cf1SJames Clark * @dest_dev: a @coresight_device representation of the component
171d49c9cf1SJames Clark connected to @src_port. NULL until the device is created
1728a7365c2SSuzuki K Poulose * @link: Representation of the connection as a sysfs link.
173e3f4e687SJames Clark *
174e3f4e687SJames Clark * The full connection structure looks like this, where in_conns store
175e3f4e687SJames Clark * references to same connection as the source device's out_conns.
176e3f4e687SJames Clark *
177e3f4e687SJames Clark * +-----------------------------+ +-----------------------------+
178e3f4e687SJames Clark * |coresight_device | |coresight_connection |
179e3f4e687SJames Clark * |-----------------------------| |-----------------------------|
180e3f4e687SJames Clark * | | | |
181e3f4e687SJames Clark * | | | dest_dev*|<--
182e3f4e687SJames Clark * |pdata->out_conns[nr_outconns]|<->|src_dev* | |
183e3f4e687SJames Clark * | | | | |
184e3f4e687SJames Clark * +-----------------------------+ +-----------------------------+ |
185e3f4e687SJames Clark * |
186e3f4e687SJames Clark * +-----------------------------+ |
187e3f4e687SJames Clark * |coresight_device | |
188e3f4e687SJames Clark * |------------------------------ |
189e3f4e687SJames Clark * | | |
190e3f4e687SJames Clark * | pdata->in_conns[nr_inconns]|<--
191e3f4e687SJames Clark * | |
192e3f4e687SJames Clark * +-----------------------------+
193a06ae860SPratik Patel */
194a06ae860SPratik Patel struct coresight_connection {
195d49c9cf1SJames Clark int src_port;
196d49c9cf1SJames Clark int dest_port;
197d49c9cf1SJames Clark struct fwnode_handle *dest_fwnode;
198d49c9cf1SJames Clark struct coresight_device *dest_dev;
1998a7365c2SSuzuki K Poulose struct coresight_sysfs_link *link;
200e3f4e687SJames Clark struct coresight_device *src_dev;
201ae7f2b5aSJames Clark atomic_t src_refcnt;
202ae7f2b5aSJames Clark atomic_t dest_refcnt;
203a06ae860SPratik Patel };
204a06ae860SPratik Patel
205a06ae860SPratik Patel /**
20680961525SMike Leach * struct coresight_sysfs_link - representation of a connection in sysfs.
20780961525SMike Leach * @orig: Originating (master) coresight device for the link.
20880961525SMike Leach * @orig_name: Name to use for the link orig->target.
20980961525SMike Leach * @target: Target (slave) coresight device for the link.
21080961525SMike Leach * @target_name: Name to use for the link target->orig.
21180961525SMike Leach */
21280961525SMike Leach struct coresight_sysfs_link {
21380961525SMike Leach struct coresight_device *orig;
21480961525SMike Leach const char *orig_name;
21580961525SMike Leach struct coresight_device *target;
21680961525SMike Leach const char *target_name;
21780961525SMike Leach };
21880961525SMike Leach
21980961525SMike Leach /**
220a06ae860SPratik Patel * struct coresight_device - representation of a device as used by the framework
221b77e3ed0SSuzuki K Poulose * @pdata: Platform data with device connections associated to this device.
222a06ae860SPratik Patel * @type: as defined by @coresight_dev_type.
223a06ae860SPratik Patel * @subtype: as defined by @coresight_dev_subtype.
224a06ae860SPratik Patel * @ops: generic operations for this component, as defined
2256e736c60SSuzuki K Poulose * by @coresight_ops.
2266e736c60SSuzuki K Poulose * @access: Device i/o access abstraction for this device.
227a06ae860SPratik Patel * @dev: The device entity associated to this component.
228a06ae860SPratik Patel * @refcnt: keep track of what is in use.
229a06ae860SPratik Patel * @orphan: true if the component has connections that haven't been linked.
230a06ae860SPratik Patel * @enable: 'true' if component is currently part of an active path.
231a06ae860SPratik Patel * @activated: 'true' only if a _sink_ has been activated. A sink can be
232bb8e370bSMathieu Poirier * activated but not yet enabled. Enabling for a _sink_
233d061cd73SMike Leach * happens when a source has been selected and a path is enabled
234d061cd73SMike Leach * from source to that sink.
235bb8e370bSMathieu Poirier * @ea: Device attribute for sink representation under PMU directory.
2360336bdfdSMike Leach * @def_sink: cached reference to default sink found for this device.
23780961525SMike Leach * @nr_links: number of sysfs links created to other components from this
23880961525SMike Leach * device. These will appear in the "connections" group.
23980961525SMike Leach * @has_conns_grp: Have added a "connections" group for sysfs links.
24042ff700fSMike Leach * @feature_csdev_list: List of complex feature programming added to the device.
24142ff700fSMike Leach * @config_csdev_list: List of system configurations added to the device.
24242ff700fSMike Leach * @cscfg_csdev_lock: Protect the lists of configurations and features.
243f8cce2ffSMike Leach * @active_cscfg_ctxt: Context information for current active system configuration.
244a06ae860SPratik Patel */
245a06ae860SPratik Patel struct coresight_device {
246b77e3ed0SSuzuki K Poulose struct coresight_platform_data *pdata;
247a06ae860SPratik Patel enum coresight_dev_type type;
24800b78e8bSSuzuki K Poulose union coresight_dev_subtype subtype;
249a06ae860SPratik Patel const struct coresight_ops *ops;
2506e736c60SSuzuki K Poulose struct csdev_access access;
251a06ae860SPratik Patel struct device dev;
252ae7f2b5aSJames Clark atomic_t refcnt;
253a06ae860SPratik Patel bool orphan;
254a06ae860SPratik Patel bool enable; /* true only if configured as part of a path */
255bb8e370bSMathieu Poirier /* sink specific fields */
256a06ae860SPratik Patel bool activated; /* true only if a sink is part of a path */
257bb8e370bSMathieu Poirier struct dev_ext_attribute *ea;
2580336bdfdSMike Leach struct coresight_device *def_sink;
25980961525SMike Leach /* sysfs links between components */
26080961525SMike Leach int nr_links;
26180961525SMike Leach bool has_conns_grp;
26242ff700fSMike Leach /* system configuration and feature lists */
26342ff700fSMike Leach struct list_head feature_csdev_list;
26442ff700fSMike Leach struct list_head config_csdev_list;
26542ff700fSMike Leach spinlock_t cscfg_csdev_lock;
266f8cce2ffSMike Leach void *active_cscfg_ctxt;
267a06ae860SPratik Patel };
268a06ae860SPratik Patel
2690f5f9b6bSSuzuki K Poulose /*
2700f5f9b6bSSuzuki K Poulose * coresight_dev_list - Mapping for devices to "name" index for device
2710f5f9b6bSSuzuki K Poulose * names.
2720f5f9b6bSSuzuki K Poulose *
2730f5f9b6bSSuzuki K Poulose * @nr_idx: Number of entries already allocated.
2740f5f9b6bSSuzuki K Poulose * @pfx: Prefix pattern for device name.
2750f5f9b6bSSuzuki K Poulose * @fwnode_list: Array of fwnode_handles associated with each allocated
2760f5f9b6bSSuzuki K Poulose * index, upto nr_idx entries.
2770f5f9b6bSSuzuki K Poulose */
2780f5f9b6bSSuzuki K Poulose struct coresight_dev_list {
2790f5f9b6bSSuzuki K Poulose int nr_idx;
2800f5f9b6bSSuzuki K Poulose const char *pfx;
2810f5f9b6bSSuzuki K Poulose struct fwnode_handle **fwnode_list;
2820f5f9b6bSSuzuki K Poulose };
2830f5f9b6bSSuzuki K Poulose
2840f5f9b6bSSuzuki K Poulose #define DEFINE_CORESIGHT_DEVLIST(var, dev_pfx) \
2850f5f9b6bSSuzuki K Poulose static struct coresight_dev_list (var) = { \
2860f5f9b6bSSuzuki K Poulose .pfx = dev_pfx, \
2870f5f9b6bSSuzuki K Poulose .nr_idx = 0, \
2880f5f9b6bSSuzuki K Poulose .fwnode_list = NULL, \
2890f5f9b6bSSuzuki K Poulose }
2900f5f9b6bSSuzuki K Poulose
291a06ae860SPratik Patel #define to_coresight_device(d) container_of(d, struct coresight_device, dev)
292a06ae860SPratik Patel
2939fa36828SJames Clark enum cs_mode {
2949fa36828SJames Clark CS_MODE_DISABLED,
2959fa36828SJames Clark CS_MODE_SYSFS,
2969fa36828SJames Clark CS_MODE_PERF,
2979fa36828SJames Clark };
2989fa36828SJames Clark
299a06ae860SPratik Patel #define source_ops(csdev) csdev->ops->source_ops
300a06ae860SPratik Patel #define sink_ops(csdev) csdev->ops->sink_ops
301a06ae860SPratik Patel #define link_ops(csdev) csdev->ops->link_ops
3028a091d84SSuzuki K Poulose #define helper_ops(csdev) csdev->ops->helper_ops
303835d722bSMike Leach #define ect_ops(csdev) csdev->ops->ect_ops
304a06ae860SPratik Patel
305a06ae860SPratik Patel /**
306a06ae860SPratik Patel * struct coresight_ops_sink - basic operations for a sink
307a06ae860SPratik Patel * Operations available for sinks
308a06ae860SPratik Patel * @enable: enables the sink.
309a06ae860SPratik Patel * @disable: disables the sink.
3102997aa40SMathieu Poirier * @alloc_buffer: initialises perf's ring buffer for trace collection.
3112997aa40SMathieu Poirier * @free_buffer: release memory allocated in @get_config.
3122997aa40SMathieu Poirier * @update_buffer: update buffer pointers after a trace session.
313a06ae860SPratik Patel */
314a06ae860SPratik Patel struct coresight_ops_sink {
3159fa36828SJames Clark int (*enable)(struct coresight_device *csdev, enum cs_mode mode,
3169fa36828SJames Clark void *data);
3176c817a95SMathieu Poirier int (*disable)(struct coresight_device *csdev);
318a0f08a6aSMathieu Poirier void *(*alloc_buffer)(struct coresight_device *csdev,
319a0f08a6aSMathieu Poirier struct perf_event *event, void **pages,
320a0f08a6aSMathieu Poirier int nr_pages, bool overwrite);
3212997aa40SMathieu Poirier void (*free_buffer)(void *config);
3227ec786adSSuzuki K Poulose unsigned long (*update_buffer)(struct coresight_device *csdev,
3232997aa40SMathieu Poirier struct perf_output_handle *handle,
3242997aa40SMathieu Poirier void *sink_config);
325a06ae860SPratik Patel };
326a06ae860SPratik Patel
327a06ae860SPratik Patel /**
328a06ae860SPratik Patel * struct coresight_ops_link - basic operations for a link
329a06ae860SPratik Patel * Operations available for links.
330a06ae860SPratik Patel * @enable: enables flow between iport and oport.
331a06ae860SPratik Patel * @disable: disables flow between iport and oport.
332a06ae860SPratik Patel */
333a06ae860SPratik Patel struct coresight_ops_link {
334ae7f2b5aSJames Clark int (*enable)(struct coresight_device *csdev,
335ae7f2b5aSJames Clark struct coresight_connection *in,
336ae7f2b5aSJames Clark struct coresight_connection *out);
337ae7f2b5aSJames Clark void (*disable)(struct coresight_device *csdev,
338ae7f2b5aSJames Clark struct coresight_connection *in,
339ae7f2b5aSJames Clark struct coresight_connection *out);
340a06ae860SPratik Patel };
341a06ae860SPratik Patel
342a06ae860SPratik Patel /**
343a06ae860SPratik Patel * struct coresight_ops_source - basic operations for a source
344a06ae860SPratik Patel * Operations available for sources.
34552210c87SMathieu Poirier * @cpu_id: returns the value of the CPU number this component
34652210c87SMathieu Poirier * is associated to.
3471d27ff5aSMathieu Poirier * @enable: enables tracing for a source.
348a06ae860SPratik Patel * @disable: disables tracing for a source.
349a06ae860SPratik Patel */
350a06ae860SPratik Patel struct coresight_ops_source {
35152210c87SMathieu Poirier int (*cpu_id)(struct coresight_device *csdev);
3529fa36828SJames Clark int (*enable)(struct coresight_device *csdev, struct perf_event *event,
3539fa36828SJames Clark enum cs_mode mode);
35468905d73SMathieu Poirier void (*disable)(struct coresight_device *csdev,
35568905d73SMathieu Poirier struct perf_event *event);
356a06ae860SPratik Patel };
357a06ae860SPratik Patel
3588a091d84SSuzuki K Poulose /**
3598a091d84SSuzuki K Poulose * struct coresight_ops_helper - Operations for a helper device.
3608a091d84SSuzuki K Poulose *
3618a091d84SSuzuki K Poulose * All operations could pass in a device specific data, which could
3628a091d84SSuzuki K Poulose * help the helper device to determine what to do.
3638a091d84SSuzuki K Poulose *
3648a091d84SSuzuki K Poulose * @enable : Enable the device
3658a091d84SSuzuki K Poulose * @disable : Disable the device
3668a091d84SSuzuki K Poulose */
3678a091d84SSuzuki K Poulose struct coresight_ops_helper {
36861486528SJames Clark int (*enable)(struct coresight_device *csdev, enum cs_mode mode,
36961486528SJames Clark void *data);
3708a091d84SSuzuki K Poulose int (*disable)(struct coresight_device *csdev, void *data);
3718a091d84SSuzuki K Poulose };
3728a091d84SSuzuki K Poulose
373a06ae860SPratik Patel struct coresight_ops {
374a06ae860SPratik Patel const struct coresight_ops_sink *sink_ops;
375a06ae860SPratik Patel const struct coresight_ops_link *link_ops;
376a06ae860SPratik Patel const struct coresight_ops_source *source_ops;
3778a091d84SSuzuki K Poulose const struct coresight_ops_helper *helper_ops;
378a06ae860SPratik Patel };
379a06ae860SPratik Patel
380b8127113SKim Phillips #if IS_ENABLED(CONFIG_CORESIGHT)
3816e736c60SSuzuki K Poulose
csdev_access_relaxed_read32(struct csdev_access * csa,u32 offset)3826e736c60SSuzuki K Poulose static inline u32 csdev_access_relaxed_read32(struct csdev_access *csa,
3836e736c60SSuzuki K Poulose u32 offset)
3846e736c60SSuzuki K Poulose {
3856e736c60SSuzuki K Poulose if (likely(csa->io_mem))
3866e736c60SSuzuki K Poulose return readl_relaxed(csa->base + offset);
3876e736c60SSuzuki K Poulose
3886e736c60SSuzuki K Poulose return csa->read(offset, true, false);
3896e736c60SSuzuki K Poulose }
3906e736c60SSuzuki K Poulose
391*73d779a0SAnshuman Khandual #define CORESIGHT_CIDRn(i) (0xFF0 + ((i) * 4))
392*73d779a0SAnshuman Khandual
coresight_get_cid(void __iomem * base)393*73d779a0SAnshuman Khandual static inline u32 coresight_get_cid(void __iomem *base)
394*73d779a0SAnshuman Khandual {
395*73d779a0SAnshuman Khandual u32 i, cid = 0;
396*73d779a0SAnshuman Khandual
397*73d779a0SAnshuman Khandual for (i = 0; i < 4; i++)
398*73d779a0SAnshuman Khandual cid |= readl(base + CORESIGHT_CIDRn(i)) << (i * 8);
399*73d779a0SAnshuman Khandual
400*73d779a0SAnshuman Khandual return cid;
401*73d779a0SAnshuman Khandual }
402*73d779a0SAnshuman Khandual
is_coresight_device(void __iomem * base)403*73d779a0SAnshuman Khandual static inline bool is_coresight_device(void __iomem *base)
404*73d779a0SAnshuman Khandual {
405*73d779a0SAnshuman Khandual u32 cid = coresight_get_cid(base);
406*73d779a0SAnshuman Khandual
407*73d779a0SAnshuman Khandual return cid == CORESIGHT_CID;
408*73d779a0SAnshuman Khandual }
409*73d779a0SAnshuman Khandual
410*73d779a0SAnshuman Khandual /*
411*73d779a0SAnshuman Khandual * Attempt to find and enable "APB clock" for the given device
412*73d779a0SAnshuman Khandual *
413*73d779a0SAnshuman Khandual * Returns:
414*73d779a0SAnshuman Khandual *
415*73d779a0SAnshuman Khandual * clk - Clock is found and enabled
416*73d779a0SAnshuman Khandual * NULL - clock is not found
417*73d779a0SAnshuman Khandual * ERROR - Clock is found but failed to enable
418*73d779a0SAnshuman Khandual */
coresight_get_enable_apb_pclk(struct device * dev)419*73d779a0SAnshuman Khandual static inline struct clk *coresight_get_enable_apb_pclk(struct device *dev)
420*73d779a0SAnshuman Khandual {
421*73d779a0SAnshuman Khandual struct clk *pclk;
422*73d779a0SAnshuman Khandual int ret;
423*73d779a0SAnshuman Khandual
424*73d779a0SAnshuman Khandual pclk = clk_get(dev, "apb_pclk");
425*73d779a0SAnshuman Khandual if (IS_ERR(pclk))
426*73d779a0SAnshuman Khandual return NULL;
427*73d779a0SAnshuman Khandual
428*73d779a0SAnshuman Khandual ret = clk_prepare_enable(pclk);
429*73d779a0SAnshuman Khandual if (ret) {
430*73d779a0SAnshuman Khandual clk_put(pclk);
431*73d779a0SAnshuman Khandual return ERR_PTR(ret);
432*73d779a0SAnshuman Khandual }
433*73d779a0SAnshuman Khandual return pclk;
434*73d779a0SAnshuman Khandual }
435*73d779a0SAnshuman Khandual
4365a1c7097SAnshuman Khandual #define CORESIGHT_PIDRn(i) (0xFE0 + ((i) * 4))
4375a1c7097SAnshuman Khandual
coresight_get_pid(struct csdev_access * csa)4385a1c7097SAnshuman Khandual static inline u32 coresight_get_pid(struct csdev_access *csa)
4395a1c7097SAnshuman Khandual {
4405a1c7097SAnshuman Khandual u32 i, pid = 0;
4415a1c7097SAnshuman Khandual
4425a1c7097SAnshuman Khandual for (i = 0; i < 4; i++)
4435a1c7097SAnshuman Khandual pid |= csdev_access_relaxed_read32(csa, CORESIGHT_PIDRn(i)) << (i * 8);
4445a1c7097SAnshuman Khandual
4455a1c7097SAnshuman Khandual return pid;
4465a1c7097SAnshuman Khandual }
4475a1c7097SAnshuman Khandual
csdev_access_relaxed_read_pair(struct csdev_access * csa,u32 lo_offset,u32 hi_offset)448b6df1cbbSJames Clark static inline u64 csdev_access_relaxed_read_pair(struct csdev_access *csa,
4490a98181fSJames Clark u32 lo_offset, u32 hi_offset)
450b6df1cbbSJames Clark {
451b6df1cbbSJames Clark if (likely(csa->io_mem)) {
4520a98181fSJames Clark return readl_relaxed(csa->base + lo_offset) |
4530a98181fSJames Clark ((u64)readl_relaxed(csa->base + hi_offset) << 32);
454b6df1cbbSJames Clark }
455b6df1cbbSJames Clark
4560a98181fSJames Clark return csa->read(lo_offset, true, false) | (csa->read(hi_offset, true, false) << 32);
4570a98181fSJames Clark }
4580a98181fSJames Clark
csdev_access_relaxed_write_pair(struct csdev_access * csa,u64 val,u32 lo_offset,u32 hi_offset)4590a98181fSJames Clark static inline void csdev_access_relaxed_write_pair(struct csdev_access *csa, u64 val,
4600a98181fSJames Clark u32 lo_offset, u32 hi_offset)
4610a98181fSJames Clark {
4620a98181fSJames Clark if (likely(csa->io_mem)) {
4630a98181fSJames Clark writel_relaxed((u32)val, csa->base + lo_offset);
4640a98181fSJames Clark writel_relaxed((u32)(val >> 32), csa->base + hi_offset);
4650a98181fSJames Clark } else {
4660a98181fSJames Clark csa->write((u32)val, lo_offset, true, false);
4670a98181fSJames Clark csa->write((u32)(val >> 32), hi_offset, true, false);
4680a98181fSJames Clark }
469b6df1cbbSJames Clark }
470b6df1cbbSJames Clark
csdev_access_read32(struct csdev_access * csa,u32 offset)4716e736c60SSuzuki K Poulose static inline u32 csdev_access_read32(struct csdev_access *csa, u32 offset)
4726e736c60SSuzuki K Poulose {
4736e736c60SSuzuki K Poulose if (likely(csa->io_mem))
4746e736c60SSuzuki K Poulose return readl(csa->base + offset);
4756e736c60SSuzuki K Poulose
4766e736c60SSuzuki K Poulose return csa->read(offset, false, false);
4776e736c60SSuzuki K Poulose }
4786e736c60SSuzuki K Poulose
csdev_access_relaxed_write32(struct csdev_access * csa,u32 val,u32 offset)4796e736c60SSuzuki K Poulose static inline void csdev_access_relaxed_write32(struct csdev_access *csa,
4806e736c60SSuzuki K Poulose u32 val, u32 offset)
4816e736c60SSuzuki K Poulose {
4826e736c60SSuzuki K Poulose if (likely(csa->io_mem))
4836e736c60SSuzuki K Poulose writel_relaxed(val, csa->base + offset);
4846e736c60SSuzuki K Poulose else
4856e736c60SSuzuki K Poulose csa->write(val, offset, true, false);
4866e736c60SSuzuki K Poulose }
4876e736c60SSuzuki K Poulose
csdev_access_write32(struct csdev_access * csa,u32 val,u32 offset)4886e736c60SSuzuki K Poulose static inline void csdev_access_write32(struct csdev_access *csa, u32 val, u32 offset)
4896e736c60SSuzuki K Poulose {
4906e736c60SSuzuki K Poulose if (likely(csa->io_mem))
4916e736c60SSuzuki K Poulose writel(val, csa->base + offset);
4926e736c60SSuzuki K Poulose else
4936e736c60SSuzuki K Poulose csa->write(val, offset, false, false);
4946e736c60SSuzuki K Poulose }
4956e736c60SSuzuki K Poulose
4966e736c60SSuzuki K Poulose #ifdef CONFIG_64BIT
4976e736c60SSuzuki K Poulose
csdev_access_relaxed_read64(struct csdev_access * csa,u32 offset)4986e736c60SSuzuki K Poulose static inline u64 csdev_access_relaxed_read64(struct csdev_access *csa,
4996e736c60SSuzuki K Poulose u32 offset)
5006e736c60SSuzuki K Poulose {
5016e736c60SSuzuki K Poulose if (likely(csa->io_mem))
5026e736c60SSuzuki K Poulose return readq_relaxed(csa->base + offset);
5036e736c60SSuzuki K Poulose
5046e736c60SSuzuki K Poulose return csa->read(offset, true, true);
5056e736c60SSuzuki K Poulose }
5066e736c60SSuzuki K Poulose
csdev_access_read64(struct csdev_access * csa,u32 offset)5076e736c60SSuzuki K Poulose static inline u64 csdev_access_read64(struct csdev_access *csa, u32 offset)
5086e736c60SSuzuki K Poulose {
5096e736c60SSuzuki K Poulose if (likely(csa->io_mem))
5106e736c60SSuzuki K Poulose return readq(csa->base + offset);
5116e736c60SSuzuki K Poulose
5126e736c60SSuzuki K Poulose return csa->read(offset, false, true);
5136e736c60SSuzuki K Poulose }
5146e736c60SSuzuki K Poulose
csdev_access_relaxed_write64(struct csdev_access * csa,u64 val,u32 offset)5156e736c60SSuzuki K Poulose static inline void csdev_access_relaxed_write64(struct csdev_access *csa,
5166e736c60SSuzuki K Poulose u64 val, u32 offset)
5176e736c60SSuzuki K Poulose {
5186e736c60SSuzuki K Poulose if (likely(csa->io_mem))
5196e736c60SSuzuki K Poulose writeq_relaxed(val, csa->base + offset);
5206e736c60SSuzuki K Poulose else
5216e736c60SSuzuki K Poulose csa->write(val, offset, true, true);
5226e736c60SSuzuki K Poulose }
5236e736c60SSuzuki K Poulose
csdev_access_write64(struct csdev_access * csa,u64 val,u32 offset)5246e736c60SSuzuki K Poulose static inline void csdev_access_write64(struct csdev_access *csa, u64 val, u32 offset)
5256e736c60SSuzuki K Poulose {
5266e736c60SSuzuki K Poulose if (likely(csa->io_mem))
5276e736c60SSuzuki K Poulose writeq(val, csa->base + offset);
5286e736c60SSuzuki K Poulose else
5296e736c60SSuzuki K Poulose csa->write(val, offset, false, true);
5306e736c60SSuzuki K Poulose }
5316e736c60SSuzuki K Poulose
5326e736c60SSuzuki K Poulose #else /* !CONFIG_64BIT */
5336e736c60SSuzuki K Poulose
csdev_access_relaxed_read64(struct csdev_access * csa,u32 offset)5346e736c60SSuzuki K Poulose static inline u64 csdev_access_relaxed_read64(struct csdev_access *csa,
5356e736c60SSuzuki K Poulose u32 offset)
5366e736c60SSuzuki K Poulose {
5376e736c60SSuzuki K Poulose WARN_ON(1);
5386e736c60SSuzuki K Poulose return 0;
5396e736c60SSuzuki K Poulose }
5406e736c60SSuzuki K Poulose
csdev_access_read64(struct csdev_access * csa,u32 offset)5416e736c60SSuzuki K Poulose static inline u64 csdev_access_read64(struct csdev_access *csa, u32 offset)
5426e736c60SSuzuki K Poulose {
5436e736c60SSuzuki K Poulose WARN_ON(1);
5446e736c60SSuzuki K Poulose return 0;
5456e736c60SSuzuki K Poulose }
5466e736c60SSuzuki K Poulose
csdev_access_relaxed_write64(struct csdev_access * csa,u64 val,u32 offset)5476e736c60SSuzuki K Poulose static inline void csdev_access_relaxed_write64(struct csdev_access *csa,
5486e736c60SSuzuki K Poulose u64 val, u32 offset)
5496e736c60SSuzuki K Poulose {
5506e736c60SSuzuki K Poulose WARN_ON(1);
5516e736c60SSuzuki K Poulose }
5526e736c60SSuzuki K Poulose
csdev_access_write64(struct csdev_access * csa,u64 val,u32 offset)5536e736c60SSuzuki K Poulose static inline void csdev_access_write64(struct csdev_access *csa, u64 val, u32 offset)
5546e736c60SSuzuki K Poulose {
5556e736c60SSuzuki K Poulose WARN_ON(1);
5566e736c60SSuzuki K Poulose }
5576e736c60SSuzuki K Poulose #endif /* CONFIG_64BIT */
5586e736c60SSuzuki K Poulose
coresight_is_percpu_source(struct coresight_device * csdev)5592cd87a7bSAnshuman Khandual static inline bool coresight_is_percpu_source(struct coresight_device *csdev)
5602cd87a7bSAnshuman Khandual {
5612cd87a7bSAnshuman Khandual return csdev && (csdev->type == CORESIGHT_DEV_TYPE_SOURCE) &&
5622cd87a7bSAnshuman Khandual (csdev->subtype.source_subtype == CORESIGHT_DEV_SUBTYPE_SOURCE_PROC);
5632cd87a7bSAnshuman Khandual }
5642cd87a7bSAnshuman Khandual
coresight_is_percpu_sink(struct coresight_device * csdev)5652cd87a7bSAnshuman Khandual static inline bool coresight_is_percpu_sink(struct coresight_device *csdev)
5662cd87a7bSAnshuman Khandual {
5672cd87a7bSAnshuman Khandual return csdev && (csdev->type == CORESIGHT_DEV_TYPE_SINK) &&
5682cd87a7bSAnshuman Khandual (csdev->subtype.sink_subtype == CORESIGHT_DEV_SUBTYPE_SINK_PERCPU_SYSMEM);
5692cd87a7bSAnshuman Khandual }
5702cd87a7bSAnshuman Khandual
571a06ae860SPratik Patel extern struct coresight_device *
572a06ae860SPratik Patel coresight_register(struct coresight_desc *desc);
573a06ae860SPratik Patel extern void coresight_unregister(struct coresight_device *csdev);
574a06ae860SPratik Patel extern int coresight_enable(struct coresight_device *csdev);
575a06ae860SPratik Patel extern void coresight_disable(struct coresight_device *csdev);
57602005282SSuzuki K Poulose extern int coresight_timeout(struct csdev_access *csa, u32 offset,
577a06ae860SPratik Patel int position, int value);
5782478a6aeSSuzuki K Poulose
5798ce00296SSuzuki K Poulose extern int coresight_claim_device(struct coresight_device *csdev);
5808ce00296SSuzuki K Poulose extern int coresight_claim_device_unlocked(struct coresight_device *csdev);
5812478a6aeSSuzuki K Poulose
5828ce00296SSuzuki K Poulose extern void coresight_disclaim_device(struct coresight_device *csdev);
5838ce00296SSuzuki K Poulose extern void coresight_disclaim_device_unlocked(struct coresight_device *csdev);
5840f5f9b6bSSuzuki K Poulose extern char *coresight_alloc_device_name(struct coresight_dev_list *devs,
5850f5f9b6bSSuzuki K Poulose struct device *dev);
586f188b5e7SAndrew Murray
587f188b5e7SAndrew Murray extern bool coresight_loses_context_with_cpu(struct device *dev);
5886e736c60SSuzuki K Poulose
5896e736c60SSuzuki K Poulose u32 coresight_relaxed_read32(struct coresight_device *csdev, u32 offset);
5906e736c60SSuzuki K Poulose u32 coresight_read32(struct coresight_device *csdev, u32 offset);
5916e736c60SSuzuki K Poulose void coresight_write32(struct coresight_device *csdev, u32 val, u32 offset);
5926e736c60SSuzuki K Poulose void coresight_relaxed_write32(struct coresight_device *csdev,
5936e736c60SSuzuki K Poulose u32 val, u32 offset);
5946e736c60SSuzuki K Poulose u64 coresight_relaxed_read64(struct coresight_device *csdev, u32 offset);
5956e736c60SSuzuki K Poulose u64 coresight_read64(struct coresight_device *csdev, u32 offset);
5966e736c60SSuzuki K Poulose void coresight_relaxed_write64(struct coresight_device *csdev,
5976e736c60SSuzuki K Poulose u64 val, u32 offset);
5986e736c60SSuzuki K Poulose void coresight_write64(struct coresight_device *csdev, u64 val, u32 offset);
5996e736c60SSuzuki K Poulose
600a06ae860SPratik Patel #else
601a06ae860SPratik Patel static inline struct coresight_device *
coresight_register(struct coresight_desc * desc)602a06ae860SPratik Patel coresight_register(struct coresight_desc *desc) { return NULL; }
coresight_unregister(struct coresight_device * csdev)603a06ae860SPratik Patel static inline void coresight_unregister(struct coresight_device *csdev) {}
604a06ae860SPratik Patel static inline int
coresight_enable(struct coresight_device * csdev)605a06ae860SPratik Patel coresight_enable(struct coresight_device *csdev) { return -ENOSYS; }
coresight_disable(struct coresight_device * csdev)606a06ae860SPratik Patel static inline void coresight_disable(struct coresight_device *csdev) {}
60702005282SSuzuki K Poulose
coresight_timeout(struct csdev_access * csa,u32 offset,int position,int value)60802005282SSuzuki K Poulose static inline int coresight_timeout(struct csdev_access *csa, u32 offset,
60902005282SSuzuki K Poulose int position, int value)
61002005282SSuzuki K Poulose {
61102005282SSuzuki K Poulose return 1;
61202005282SSuzuki K Poulose }
61302005282SSuzuki K Poulose
coresight_claim_device_unlocked(struct coresight_device * csdev)6148ce00296SSuzuki K Poulose static inline int coresight_claim_device_unlocked(struct coresight_device *csdev)
6152478a6aeSSuzuki K Poulose {
6162478a6aeSSuzuki K Poulose return -EINVAL;
6172478a6aeSSuzuki K Poulose }
6182478a6aeSSuzuki K Poulose
coresight_claim_device(struct coresight_device * csdev)6198ce00296SSuzuki K Poulose static inline int coresight_claim_device(struct coresight_device *csdev)
6202478a6aeSSuzuki K Poulose {
6212478a6aeSSuzuki K Poulose return -EINVAL;
6222478a6aeSSuzuki K Poulose }
6232478a6aeSSuzuki K Poulose
coresight_disclaim_device(struct coresight_device * csdev)6248ce00296SSuzuki K Poulose static inline void coresight_disclaim_device(struct coresight_device *csdev) {}
coresight_disclaim_device_unlocked(struct coresight_device * csdev)6258ce00296SSuzuki K Poulose static inline void coresight_disclaim_device_unlocked(struct coresight_device *csdev) {}
6262478a6aeSSuzuki K Poulose
coresight_loses_context_with_cpu(struct device * dev)627f188b5e7SAndrew Murray static inline bool coresight_loses_context_with_cpu(struct device *dev)
628f188b5e7SAndrew Murray {
629f188b5e7SAndrew Murray return false;
630f188b5e7SAndrew Murray }
6316e736c60SSuzuki K Poulose
coresight_relaxed_read32(struct coresight_device * csdev,u32 offset)6326e736c60SSuzuki K Poulose static inline u32 coresight_relaxed_read32(struct coresight_device *csdev, u32 offset)
6336e736c60SSuzuki K Poulose {
6346e736c60SSuzuki K Poulose WARN_ON_ONCE(1);
6356e736c60SSuzuki K Poulose return 0;
6366e736c60SSuzuki K Poulose }
6376e736c60SSuzuki K Poulose
coresight_read32(struct coresight_device * csdev,u32 offset)6386e736c60SSuzuki K Poulose static inline u32 coresight_read32(struct coresight_device *csdev, u32 offset)
6396e736c60SSuzuki K Poulose {
6406e736c60SSuzuki K Poulose WARN_ON_ONCE(1);
6416e736c60SSuzuki K Poulose return 0;
6426e736c60SSuzuki K Poulose }
6436e736c60SSuzuki K Poulose
coresight_write32(struct coresight_device * csdev,u32 val,u32 offset)6446e736c60SSuzuki K Poulose static inline void coresight_write32(struct coresight_device *csdev, u32 val, u32 offset)
6456e736c60SSuzuki K Poulose {
6466e736c60SSuzuki K Poulose }
6476e736c60SSuzuki K Poulose
coresight_relaxed_write32(struct coresight_device * csdev,u32 val,u32 offset)6486e736c60SSuzuki K Poulose static inline void coresight_relaxed_write32(struct coresight_device *csdev,
6496e736c60SSuzuki K Poulose u32 val, u32 offset)
6506e736c60SSuzuki K Poulose {
6516e736c60SSuzuki K Poulose }
6526e736c60SSuzuki K Poulose
coresight_relaxed_read64(struct coresight_device * csdev,u32 offset)6536e736c60SSuzuki K Poulose static inline u64 coresight_relaxed_read64(struct coresight_device *csdev,
6546e736c60SSuzuki K Poulose u32 offset)
6556e736c60SSuzuki K Poulose {
6566e736c60SSuzuki K Poulose WARN_ON_ONCE(1);
6576e736c60SSuzuki K Poulose return 0;
6586e736c60SSuzuki K Poulose }
6596e736c60SSuzuki K Poulose
coresight_read64(struct coresight_device * csdev,u32 offset)6606e736c60SSuzuki K Poulose static inline u64 coresight_read64(struct coresight_device *csdev, u32 offset)
6616e736c60SSuzuki K Poulose {
6626e736c60SSuzuki K Poulose WARN_ON_ONCE(1);
6636e736c60SSuzuki K Poulose return 0;
6646e736c60SSuzuki K Poulose }
6656e736c60SSuzuki K Poulose
coresight_relaxed_write64(struct coresight_device * csdev,u64 val,u32 offset)6666e736c60SSuzuki K Poulose static inline void coresight_relaxed_write64(struct coresight_device *csdev,
6676e736c60SSuzuki K Poulose u64 val, u32 offset)
6686e736c60SSuzuki K Poulose {
6696e736c60SSuzuki K Poulose }
6706e736c60SSuzuki K Poulose
coresight_write64(struct coresight_device * csdev,u64 val,u32 offset)6716e736c60SSuzuki K Poulose static inline void coresight_write64(struct coresight_device *csdev, u64 val, u32 offset)
6726e736c60SSuzuki K Poulose {
6736e736c60SSuzuki K Poulose }
6746e736c60SSuzuki K Poulose
6756e736c60SSuzuki K Poulose #endif /* IS_ENABLED(CONFIG_CORESIGHT) */
676c61c4b5dSMathieu Poirier
67791824db2SSuzuki K Poulose extern int coresight_get_cpu(struct device *dev);
678a06ae860SPratik Patel
679f03631daSSuzuki K Poulose struct coresight_platform_data *coresight_get_platform_data(struct device *dev);
6803d4ff657SJames Clark struct coresight_connection *
6813d4ff657SJames Clark coresight_add_out_conn(struct device *dev,
6823d4ff657SJames Clark struct coresight_platform_data *pdata,
6833d4ff657SJames Clark const struct coresight_connection *new_conn);
684e3f4e687SJames Clark int coresight_add_in_conn(struct coresight_connection *conn);
68561486528SJames Clark struct coresight_device *
68661486528SJames Clark coresight_find_input_type(struct coresight_platform_data *pdata,
68761486528SJames Clark enum coresight_dev_type type,
68861486528SJames Clark union coresight_dev_subtype subtype);
68961486528SJames Clark struct coresight_device *
69061486528SJames Clark coresight_find_output_type(struct coresight_platform_data *pdata,
69161486528SJames Clark enum coresight_dev_type type,
69261486528SJames Clark union coresight_dev_subtype subtype);
693f03631daSSuzuki K Poulose
6946e736c60SSuzuki K Poulose #endif /* _LINUX_COREISGHT_H */
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