summaryrefslogtreecommitdiffstats
path: root/drivers/soc/ti/knav_qmss.h
blob: bd040c29c4bf812272f0f98ed76bf157f65b827d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
/*
 * Keystone Navigator QMSS driver internal header
 *
 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
 * Author:	Sandeep Nair <sandeep_n@ti.com>
 *		Cyril Chemparathy <cyril@ti.com>
 *		Santosh Shilimkar <santosh.shilimkar@ti.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#ifndef __KNAV_QMSS_H__
#define __KNAV_QMSS_H__

#include <linux/percpu.h>

#define THRESH_GTE	BIT(7)
#define THRESH_LT	0

#define PDSP_CTRL_PC_MASK	0xffff0000
#define PDSP_CTRL_SOFT_RESET	BIT(0)
#define PDSP_CTRL_ENABLE	BIT(1)
#define PDSP_CTRL_RUNNING	BIT(15)

#define ACC_MAX_CHANNEL		48
#define ACC_DEFAULT_PERIOD	25 /* usecs */

#define ACC_CHANNEL_INT_BASE		2

#define ACC_LIST_ENTRY_TYPE		1
#define ACC_LIST_ENTRY_WORDS		(1 << ACC_LIST_ENTRY_TYPE)
#define ACC_LIST_ENTRY_QUEUE_IDX	0
#define ACC_LIST_ENTRY_DESC_IDX	(ACC_LIST_ENTRY_WORDS - 1)

#define ACC_CMD_DISABLE_CHANNEL	0x80
#define ACC_CMD_ENABLE_CHANNEL	0x81
#define ACC_CFG_MULTI_QUEUE		BIT(21)

#define ACC_INTD_OFFSET_EOI		(0x0010)
#define ACC_INTD_OFFSET_COUNT(ch)	(0x0300 + 4 * (ch))
#define ACC_INTD_OFFSET_STATUS(ch)	(0x0200 + 4 * ((ch) / 32))

#define RANGE_MAX_IRQS			64

#define ACC_DESCS_MAX		SZ_1K
#define ACC_DESCS_MASK		(ACC_DESCS_MAX - 1)
#define DESC_SIZE_MASK		0xful
#define DESC_PTR_MASK		(~DESC_SIZE_MASK)

#define KNAV_NAME_SIZE			32

enum knav_acc_result {
	ACC_RET_IDLE,
	ACC_RET_SUCCESS,
	ACC_RET_INVALID_COMMAND,
	ACC_RET_INVALID_CHANNEL,
	ACC_RET_INACTIVE_CHANNEL,
	ACC_RET_ACTIVE_CHANNEL,
	ACC_RET_INVALID_QUEUE,
	ACC_RET_INVALID_RET,
};

struct knav_reg_config {
	u32		revision;
	u32		__pad1;
	u32		divert;
	u32		link_ram_base0;
	u32		link_ram_size0;
	u32		link_ram_base1;
	u32		__pad2[2];
	u32		starvation[0];
};

struct knav_reg_region {
	u32		base;
	u32		start_index;
	u32		size_count;
	u32		__pad;
};

struct knav_reg_pdsp_regs {
	u32		control;
	u32		status;
	u32		cycle_count;
	u32		stall_count;
};

struct knav_reg_acc_command {
	u32		command;
	u32		queue_mask;
	u32		list_dma;
	u32		queue_num;
	u32		timer_config;
};

struct knav_link_ram_block {
	dma_addr_t	 dma;
	void		*virt;
	size_t		 size;
};

struct knav_acc_info {
	u32			 pdsp_id;
	u32			 start_channel;
	u32			 list_entries;
	u32			 pacing_mode;
	u32			 timer_count;
	int			 mem_size;
	int			 list_size;
	struct knav_pdsp_info	*pdsp;
};

struct knav_acc_channel {
	u32			channel;
	u32			list_index;
	u32			open_mask;
	u32			*list_cpu[2];
	dma_addr_t		list_dma[2];
	char			name[KNAV_NAME_SIZE];
	atomic_t		retrigger_count;
};

struct knav_pdsp_info {
	const char					*name;
	struct knav_reg_pdsp_regs  __iomem		*regs;
	union {
		void __iomem				*command;
		struct knav_reg_acc_command __iomem	*acc_command;
		u32 __iomem				*qos_command;
	};
	void __iomem					*intd;
	u32 __iomem					*iram;
	u32						id;
	struct list_head				list;
	bool						loaded;
	bool						started;
};

struct knav_qmgr_info {
	unsigned			start_queue;
	unsigned			num_queues;
	struct knav_reg_config __iomem	*reg_config;
	struct knav_reg_region __iomem	*reg_region;
	struct knav_reg_queue __iomem	*reg_push, *reg_pop, *reg_peek;
	void __iomem			*reg_status;
	struct list_head		list;
};

#define KNAV_NUM_LINKRAM	2

/**
 * struct knav_queue_stats:	queue statistics
 * pushes:			number of push operations
 * pops:			number of pop operations
 * push_errors:			number of push errors
 * pop_errors:			number of pop errors
 * notifies:			notifier counts
 */
struct knav_queue_stats {
	unsigned int pushes;
	unsigned int pops;
	unsigned int push_errors;
	unsigned int pop_errors;
	unsigned int notifies;
};

/**
 * struct knav_reg_queue:	queue registers
 * @entry_count:		valid entries in the queue
 * @byte_count:			total byte count in thhe queue
 * @packet_size:		packet size for the queue
 * @ptr_size_thresh:		packet pointer size threshold
 */
struct knav_reg_queue {
	u32		entry_count;
	u32		byte_count;
	u32		packet_size;
	u32		ptr_size_thresh;
};

/**
 * struct knav_region:		qmss region info
 * @dma_start, dma_end:		start and end dma address
 * @virt_start, virt_end:	start and end virtual address
 * @desc_size:			descriptor size
 * @used_desc:			consumed descriptors
 * @id:				region number
 * @num_desc:			total descriptors
 * @link_index:			index of the first descriptor
 * @name:			region name
 * @list:			instance in the device's region list
 * @pools:			list of descriptor pools in the region
 */
struct knav_region {
	dma_addr_t		dma_start, dma_end;
	void			*virt_start, *virt_end;
	unsigned		desc_size;
	unsigned		used_desc;
	unsigned		id;
	unsigned		num_desc;
	unsigned		link_index;
	const char		*name;
	struct list_head	list;
	struct list_head	pools;
};

/**
 * struct knav_pool:		qmss pools
 * @dev:			device pointer
 * @region:			qmss region info
 * @queue:			queue registers
 * @kdev:			qmss device pointer
 * @region_offset:		offset from the base
 * @num_desc:			total descriptors
 * @desc_size:			descriptor size
 * @region_id:			region number
 * @name:			pool name
 * @list:			list head
 * @region_inst:		instance in the region's pool list
 */
struct knav_pool {
	struct device			*dev;
	struct knav_region		*region;
	struct knav_queue		*queue;
	struct knav_device		*kdev;
	int				region_offset;
	int				num_desc;
	int				desc_size;
	int				region_id;
	const char			*name;
	struct list_head		list;
	struct list_head		region_inst;
};

/**
 * struct knav_queue_inst:		qmss queue instace properties
 * @descs:				descriptor pointer
 * @desc_head, desc_tail, desc_count:	descriptor counters
 * @acc:				accumulator channel pointer
 * @kdev:				qmss device pointer
 * @range:				range info
 * @qmgr:				queue manager info
 * @id:					queue instace id
 * @irq_num:				irq line number
 * @notify_needed:			notifier needed based on queue type
 * @num_notifiers:			total notifiers
 * @handles:				list head
 * @name:				queue instance name
 * @irq_name:				irq line name
 */
struct knav_queue_inst {
	u32				*descs;
	atomic_t			desc_head, desc_tail, desc_count;
	struct knav_acc_channel	*acc;
	struct knav_device		*kdev;
	struct knav_range_info		*range;
	struct knav_qmgr_info		*qmgr;
	u32				id;
	int				irq_num;
	int				notify_needed;
	atomic_t			num_notifiers;
	struct list_head		handles;
	const char			*name;
	const char			*irq_name;
};

/**
 * struct knav_queue:			qmss queue properties
 * @reg_push, reg_pop, reg_peek:	push, pop queue registers
 * @inst:				qmss queue instace properties
 * @notifier_fn:			notifier function
 * @notifier_fn_arg:			notifier function argument
 * @notifier_enabled:			notier enabled for a give queue
 * @rcu:				rcu head
 * @flags:				queue flags
 * @list:				list head
 */
struct knav_queue {
	struct knav_reg_queue __iomem	*reg_push, *reg_pop, *reg_peek;
	struct knav_queue_inst		*inst;
	struct knav_queue_stats __percpu	*stats;
	knav_queue_notify_fn		notifier_fn;
	void				*notifier_fn_arg;
	atomic_t			notifier_enabled;
	struct rcu_head			rcu;
	unsigned			flags;
	struct list_head		list;
};

enum qmss_version {
	QMSS,
	QMSS_66AK2G,
};

struct knav_device {
	struct device				*dev;
	unsigned				base_id;
	unsigned				num_queues;
	unsigned				num_queues_in_use;
	unsigned				inst_shift;
	struct knav_link_ram_block		link_rams[KNAV_NUM_LINKRAM];
	void					*instances;
	struct list_head			regions;
	struct list_head			queue_ranges;
	struct list_head			pools;
	struct list_head			pdsps;
	struct list_head			qmgrs;
	enum qmss_version			version;
};

struct knav_range_ops {
	int	(*init_range)(struct knav_range_info *range);
	int	(*free_range)(struct knav_range_info *range);
	int	(*init_queue)(struct knav_range_info *range,
			      struct knav_queue_inst *inst);
	int	(*open_queue)(struct knav_range_info *range,
			      struct knav_queue_inst *inst, unsigned flags);
	int	(*close_queue)(struct knav_range_info *range,
			       struct knav_queue_inst *inst);
	int	(*set_notify)(struct knav_range_info *range,
			      struct knav_queue_inst *inst, bool enabled);
};

struct knav_irq_info {
	int		irq;
	struct cpumask	*cpu_mask;
};

struct knav_range_info {
	const char			*name;
	struct knav_device		*kdev;
	unsigned			queue_base;
	unsigned			num_queues;
	void				*queue_base_inst;
	unsigned			flags;
	struct list_head		list;
	struct knav_range_ops		*ops;
	struct knav_acc_info		acc_info;
	struct knav_acc_channel	*acc;
	unsigned			num_irqs;
	struct knav_irq_info		irqs[RANGE_MAX_IRQS];
};

#define RANGE_RESERVED		BIT(0)
#define RANGE_HAS_IRQ		BIT(1)
#define RANGE_HAS_ACCUMULATOR	BIT(2)
#define RANGE_MULTI_QUEUE	BIT(3)

#define for_each_region(kdev, region)				\
	list_for_each_entry(region, &kdev->regions, list)

#define first_region(kdev)					\
	list_first_entry_or_null(&kdev->regions, \
				 struct knav_region, list)

#define for_each_queue_range(kdev, range)			\
	list_for_each_entry(range, &kdev->queue_ranges, list)

#define first_queue_range(kdev)					\
	list_first_entry_or_null(&kdev->queue_ranges, \
				 struct knav_range_info, list)

#define for_each_pool(kdev, pool)				\
	list_for_each_entry(pool, &kdev->pools, list)

#define for_each_pdsp(kdev, pdsp)				\
	list_for_each_entry(pdsp, &kdev->pdsps, list)

#define for_each_qmgr(kdev, qmgr)				\
	list_for_each_entry(qmgr, &kdev->qmgrs, list)

static inline struct knav_pdsp_info *
knav_find_pdsp(struct knav_device *kdev, unsigned pdsp_id)
{
	struct knav_pdsp_info *pdsp;

	for_each_pdsp(kdev, pdsp)
		if (pdsp_id == pdsp->id)
			return pdsp;
	return NULL;
}

extern int knav_init_acc_range(struct knav_device *kdev,
					struct device_node *node,
					struct knav_range_info *range);
extern void knav_queue_notify(struct knav_queue_inst *inst);

#endif /* __KNAV_QMSS_H__ */