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  **/
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 	/* aq_rc is invalid if AQ timed out */
120 	if (aq_ret == -EIO)
121 		return -EAGAIN;
122 
123 	if (!((u32)aq_rc < (sizeof(aq_to_posix) / sizeof((aq_to_posix)[0]))))
124 		return -ERANGE;
125 
126 	return aq_to_posix[aq_rc];
127 }
128 
129 /* general information */
130 #define I40E_AQ_LARGE_BUF	512
131 #define I40E_ASQ_CMD_TIMEOUT	250000  /* usecs */
132 
133 void i40e_fill_default_direct_cmd_desc(struct i40e_aq_desc *desc,
134 				       u16 opcode);
135 
136 #endif /* _I40E_ADMINQ_H_ */
137