1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4 #ifndef _I40E_ADMINQ_H_
5 #define _I40E_ADMINQ_H_
6
7 #include <linux/mutex.h>
8 #include "i40e_alloc.h"
9 #include "i40e_adminq_cmd.h"
10
11 #define I40E_ADMINQ_DESC(R, i) \
12 (&(((struct i40e_aq_desc *)((R).desc_buf.va))[i]))
13
14 #define I40E_ADMINQ_DESC_ALIGNMENT 4096
15
16 struct i40e_adminq_ring {
17 struct i40e_virt_mem dma_head; /* space for dma structures */
18 struct i40e_dma_mem desc_buf; /* descriptor ring memory */
19 struct i40e_virt_mem cmd_buf; /* command buffer memory */
20
21 union {
22 struct i40e_dma_mem *asq_bi;
23 struct i40e_dma_mem *arq_bi;
24 } r;
25
26 u16 count; /* Number of descriptors */
27 u16 rx_buf_len; /* Admin Receive Queue buffer length */
28
29 /* used for interrupt processing */
30 u16 next_to_use;
31 u16 next_to_clean;
32
33 /* used for queue tracking */
34 u32 head;
35 u32 tail;
36 u32 len;
37 u32 bah;
38 u32 bal;
39 };
40
41 /* ASQ transaction details */
42 struct i40e_asq_cmd_details {
43 void *callback; /* cast from type I40E_ADMINQ_CALLBACK */
44 u64 cookie;
45 u16 flags_ena;
46 u16 flags_dis;
47 bool async;
48 bool postpone;
49 struct i40e_aq_desc *wb_desc;
50 };
51
52 #define I40E_ADMINQ_DETAILS(R, i) \
53 (&(((struct i40e_asq_cmd_details *)((R).cmd_buf.va))[i]))
54
55 /* ARQ event information */
56 struct i40e_arq_event_info {
57 struct i40e_aq_desc desc;
58 u16 msg_len;
59 u16 buf_len;
60 u8 *msg_buf;
61 };
62
63 /* Admin Queue information */
64 struct i40e_adminq_info {
65 struct i40e_adminq_ring arq; /* receive queue */
66 struct i40e_adminq_ring asq; /* send queue */
67 u32 asq_cmd_timeout; /* send queue cmd write back timeout*/
68 u16 num_arq_entries; /* receive queue depth */
69 u16 num_asq_entries; /* send queue depth */
70 u16 arq_buf_size; /* receive queue buffer size */
71 u16 asq_buf_size; /* send queue buffer size */
72 u16 fw_maj_ver; /* firmware major version */
73 u16 fw_min_ver; /* firmware minor version */
74 u32 fw_build; /* firmware build number */
75 u16 api_maj_ver; /* api major version */
76 u16 api_min_ver; /* api minor version */
77
78 struct mutex asq_mutex; /* Send queue lock */
79 struct mutex arq_mutex; /* Receive queue lock */
80
81 /* last status values on send and receive queues */
82 enum i40e_admin_queue_err asq_last_status;
83 enum i40e_admin_queue_err arq_last_status;
84 };
85
86 /**
87 * i40e_aq_rc_to_posix - convert errors to user-land codes
88 * @aq_ret: AdminQ handler error code can override aq_rc
89 * @aq_rc: AdminQ firmware error code to convert
90 **/
i40e_aq_rc_to_posix(int aq_ret,int aq_rc)91 static inline int i40e_aq_rc_to_posix(int aq_ret, int aq_rc)
92 {
93 int aq_to_posix[] = {
94 0, /* I40E_AQ_RC_OK */
95 -EPERM, /* I40E_AQ_RC_EPERM */
96 -ENOENT, /* I40E_AQ_RC_ENOENT */
97 -ESRCH, /* I40E_AQ_RC_ESRCH */
98 -EINTR, /* I40E_AQ_RC_EINTR */
99 -EIO, /* I40E_AQ_RC_EIO */
100 -ENXIO, /* I40E_AQ_RC_ENXIO */
101 -E2BIG, /* I40E_AQ_RC_E2BIG */
102 -EAGAIN, /* I40E_AQ_RC_EAGAIN */
103 -ENOMEM, /* I40E_AQ_RC_ENOMEM */
104 -EACCES, /* I40E_AQ_RC_EACCES */
105 -EFAULT, /* I40E_AQ_RC_EFAULT */
106 -EBUSY, /* I40E_AQ_RC_EBUSY */
107 -EEXIST, /* I40E_AQ_RC_EEXIST */
108 -EINVAL, /* I40E_AQ_RC_EINVAL */
109 -ENOTTY, /* I40E_AQ_RC_ENOTTY */
110 -ENOSPC, /* I40E_AQ_RC_ENOSPC */
111 -ENOSYS, /* I40E_AQ_RC_ENOSYS */
112 -ERANGE, /* I40E_AQ_RC_ERANGE */
113 -EPIPE, /* I40E_AQ_RC_EFLUSHED */
114 -ESPIPE, /* I40E_AQ_RC_BAD_ADDR */
115 -EROFS, /* I40E_AQ_RC_EMODE */
116 -EFBIG, /* I40E_AQ_RC_EFBIG */
117 };
118
119 if (!((u32)aq_rc < (sizeof(aq_to_posix) / sizeof((aq_to_posix)[0]))))
120 return -ERANGE;
121
122 return aq_to_posix[aq_rc];
123 }
124
125 /* general information */
126 #define I40E_AQ_LARGE_BUF 512
127 #define I40E_ASQ_CMD_TIMEOUT 250000 /* usecs */
128
129 void i40e_fill_default_direct_cmd_desc(struct i40e_aq_desc *desc,
130 u16 opcode);
131
132 #endif /* _I40E_ADMINQ_H_ */
133