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1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018, Intel Corporation. */
3
4 #ifndef _ICE_CONTROLQ_H_
5 #define _ICE_CONTROLQ_H_
6
7 #include "ice_adminq_cmd.h"
8
9 /* Maximum buffer lengths for all control queue types */
10 #define ICE_AQ_MAX_BUF_LEN 4096
11 #define ICE_MBXQ_MAX_BUF_LEN 4096
12 #define ICE_SBQ_MAX_BUF_LEN 512
13
14 #define ICE_CTL_Q_DESC(R, i) \
15         (&(((struct ice_aq_desc *)((R).desc_buf.va))[i]))
16
17 #define ICE_CTL_Q_DESC_UNUSED(R) \
18         ((u16)((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
19                (R)->next_to_clean - (R)->next_to_use - 1))
20
21 /* Defines that help manage the driver vs FW API checks.
22  * Take a look at ice_aq_ver_check in ice_controlq.c for actual usage.
23  */
24 #define EXP_FW_API_VER_MAJOR_E810       0x01
25 #define EXP_FW_API_VER_MINOR_E810       0x05
26
27 #define EXP_FW_API_VER_MAJOR_E830       0x01
28 #define EXP_FW_API_VER_MINOR_E830       0x07
29
30 #define EXP_FW_API_VER_MAJOR_BY_MAC(hw) ((hw)->mac_type == ICE_MAC_E830 ? \
31                                          EXP_FW_API_VER_MAJOR_E830 : \
32                                          EXP_FW_API_VER_MAJOR_E810)
33 #define EXP_FW_API_VER_MINOR_BY_MAC(hw) ((hw)->mac_type == ICE_MAC_E830 ? \
34                                          EXP_FW_API_VER_MINOR_E830 : \
35                                          EXP_FW_API_VER_MINOR_E810)
36
37 /* Different control queue types: These are mainly for SW consumption. */
38 enum ice_ctl_q {
39         ICE_CTL_Q_UNKNOWN = 0,
40         ICE_CTL_Q_ADMIN,
41         ICE_CTL_Q_MAILBOX,
42         ICE_CTL_Q_SB,
43 };
44
45 /* Control Queue timeout settings - max delay 1s */
46 #define ICE_CTL_Q_SQ_CMD_TIMEOUT        USEC_PER_SEC
47 #define ICE_CTL_Q_ADMIN_INIT_TIMEOUT    10    /* Count 10 times */
48 #define ICE_CTL_Q_ADMIN_INIT_MSEC       100   /* Check every 100msec */
49
50 struct ice_ctl_q_ring {
51         void *dma_head;                 /* Virtual address to DMA head */
52         struct ice_dma_mem desc_buf;    /* descriptor ring memory */
53
54         union {
55                 struct ice_dma_mem *sq_bi;
56                 struct ice_dma_mem *rq_bi;
57         } r;
58
59         u16 count;              /* Number of descriptors */
60
61         /* used for interrupt processing */
62         u16 next_to_use;
63         u16 next_to_clean;
64
65         /* used for queue tracking */
66         u32 head;
67         u32 tail;
68         u32 len;
69         u32 bah;
70         u32 bal;
71         u32 len_mask;
72         u32 len_ena_mask;
73         u32 len_crit_mask;
74         u32 head_mask;
75 };
76
77 /* sq transaction details */
78 struct ice_sq_cd {
79         struct ice_aq_desc *wb_desc;
80 };
81
82 /* rq event information */
83 struct ice_rq_event_info {
84         struct ice_aq_desc desc;
85         u16 msg_len;
86         u16 buf_len;
87         u8 *msg_buf;
88 };
89
90 /* Control Queue information */
91 struct ice_ctl_q_info {
92         enum ice_ctl_q qtype;
93         struct ice_ctl_q_ring rq;       /* receive queue */
94         struct ice_ctl_q_ring sq;       /* send queue */
95         u16 num_rq_entries;             /* receive queue depth */
96         u16 num_sq_entries;             /* send queue depth */
97         u16 rq_buf_size;                /* receive queue buffer size */
98         u16 sq_buf_size;                /* send queue buffer size */
99         enum ice_aq_err sq_last_status; /* last status on send queue */
100         struct mutex sq_lock;           /* Send queue lock */
101         struct mutex rq_lock;           /* Receive queue lock */
102 };
103
104 #endif /* _ICE_CONTROLQ_H_ */
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