Release 4.7 drivers/soc/ti/knav_qmss.h

/*
 * 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__


#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 {
	
atomic_t	 pushes;
	
atomic_t	 pops;
	
atomic_t	 push_errors;
	
atomic_t	 pop_errors;
	
atomic_t	 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	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;
};


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;
};


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;
	
u32	cpu_map;
};


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;
}

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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__ */
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Directory: drivers/soc/ti

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