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
|
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/*
* Copyright 2014-2016 Freescale Semiconductor Inc.
* Copyright 2017-2019 NXP
*
*/
#ifndef __FSL_DPAA2_IO_H
#define __FSL_DPAA2_IO_H
#include <linux/types.h>
#include <linux/cpumask.h>
#include <linux/irqreturn.h>
#include "dpaa2-fd.h"
#include "dpaa2-global.h"
struct dpaa2_io;
struct dpaa2_io_store;
struct device;
/**
* DOC: DPIO Service
*
* The DPIO service provides APIs for users to interact with the datapath
* by enqueueing and dequeing frame descriptors.
*
* The following set of APIs can be used to enqueue and dequeue frames
* as well as producing notification callbacks when data is available
* for dequeue.
*/
#define DPAA2_IO_ANY_CPU -1
/**
* struct dpaa2_io_desc - The DPIO descriptor
* @receives_notifications: Use notificaton mode. Non-zero if the DPIO
* has a channel.
* @has_8prio: Set to non-zero for channel with 8 priority WQs. Ignored
* unless receives_notification is TRUE.
* @cpu: The cpu index that at least interrupt handlers will
* execute on.
* @stash_affinity: The stash affinity for this portal favour 'cpu'
* @regs_cena: The cache enabled regs.
* @regs_cinh: The cache inhibited regs
* @dpio_id: The dpio index
* @qman_version: The qman version
*
* Describes the attributes and features of the DPIO object.
*/
struct dpaa2_io_desc {
int receives_notifications;
int has_8prio;
int cpu;
void *regs_cena;
void __iomem *regs_cinh;
int dpio_id;
u32 qman_version;
};
struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc,
struct device *dev);
void dpaa2_io_down(struct dpaa2_io *d);
irqreturn_t dpaa2_io_irq(struct dpaa2_io *obj);
struct dpaa2_io *dpaa2_io_service_select(int cpu);
/**
* struct dpaa2_io_notification_ctx - The DPIO notification context structure
* @cb: The callback to be invoked when the notification arrives
* @is_cdan: Zero for FQDAN, non-zero for CDAN
* @id: FQID or channel ID, needed for rearm
* @desired_cpu: The cpu on which the notifications will show up. Use
* DPAA2_IO_ANY_CPU if don't care
* @dpio_id: The dpio index
* @qman64: The 64-bit context value shows up in the FQDAN/CDAN.
* @node: The list node
* @dpio_private: The dpio object internal to dpio_service
*
* Used when a FQDAN/CDAN registration is made by drivers.
*/
struct dpaa2_io_notification_ctx {
void (*cb)(struct dpaa2_io_notification_ctx *ctx);
int is_cdan;
u32 id;
int desired_cpu;
int dpio_id;
u64 qman64;
struct list_head node;
void *dpio_private;
};
int dpaa2_io_get_cpu(struct dpaa2_io *d);
int dpaa2_io_service_register(struct dpaa2_io *service,
struct dpaa2_io_notification_ctx *ctx,
struct device *dev);
void dpaa2_io_service_deregister(struct dpaa2_io *service,
struct dpaa2_io_notification_ctx *ctx,
struct device *dev);
int dpaa2_io_service_rearm(struct dpaa2_io *service,
struct dpaa2_io_notification_ctx *ctx);
int dpaa2_io_service_pull_fq(struct dpaa2_io *d, u32 fqid,
struct dpaa2_io_store *s);
int dpaa2_io_service_pull_channel(struct dpaa2_io *d, u32 channelid,
struct dpaa2_io_store *s);
int dpaa2_io_service_enqueue_fq(struct dpaa2_io *d, u32 fqid,
const struct dpaa2_fd *fd);
int dpaa2_io_service_enqueue_multiple_fq(struct dpaa2_io *d, u32 fqid,
const struct dpaa2_fd *fd, int number_of_frame);
int dpaa2_io_service_enqueue_multiple_desc_fq(struct dpaa2_io *d, u32 *fqid,
const struct dpaa2_fd *fd, int number_of_frame);
int dpaa2_io_service_enqueue_qd(struct dpaa2_io *d, u32 qdid, u8 prio,
u16 qdbin, const struct dpaa2_fd *fd);
int dpaa2_io_service_release(struct dpaa2_io *d, u16 bpid,
const u64 *buffers, unsigned int num_buffers);
int dpaa2_io_service_acquire(struct dpaa2_io *d, u16 bpid,
u64 *buffers, unsigned int num_buffers);
struct dpaa2_io_store *dpaa2_io_store_create(unsigned int max_frames,
struct device *dev);
void dpaa2_io_store_destroy(struct dpaa2_io_store *s);
struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last);
int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid,
u32 *fcnt, u32 *bcnt);
int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid,
u32 *num);
#endif /* __FSL_DPAA2_IO_H */
|
