[deliverable/linux.git] / drivers / scsi / snic / vnic_devcmd.h

/*
 * Copyright 2014 Cisco Systems, Inc.  All rights reserved.
 *
 * This program is free software; you may redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef _VNIC_DEVCMD_H_
#define _VNIC_DEVCMD_H_

#define _CMD_NBITS      14
#define _CMD_VTYPEBITS	10
#define _CMD_FLAGSBITS  6
#define _CMD_DIRBITS	2

#define _CMD_NMASK      ((1 << _CMD_NBITS)-1)
#define _CMD_VTYPEMASK  ((1 << _CMD_VTYPEBITS)-1)
#define _CMD_FLAGSMASK  ((1 << _CMD_FLAGSBITS)-1)
#define _CMD_DIRMASK    ((1 << _CMD_DIRBITS)-1)

#define _CMD_NSHIFT     0
#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
#define _CMD_DIRSHIFT   (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)

/*
 * Direction bits (from host perspective).
 */
#define _CMD_DIR_NONE   0U
#define _CMD_DIR_WRITE  1U
#define _CMD_DIR_READ   2U
#define _CMD_DIR_RW     (_CMD_DIR_WRITE | _CMD_DIR_READ)

/*
 * Flag bits.
 */
#define _CMD_FLAGS_NONE 0U
#define _CMD_FLAGS_NOWAIT 1U

/*
 * vNIC type bits.
 */
#define _CMD_VTYPE_NONE  0U
#define _CMD_VTYPE_ENET  1U
#define _CMD_VTYPE_FC    2U
#define _CMD_VTYPE_SCSI  4U
#define _CMD_VTYPE_ALL   (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)

/*
 * Used to create cmds..
*/
#define _CMDCF(dir, flags, vtype, nr)  \
	(((dir)   << _CMD_DIRSHIFT) | \
	((flags) << _CMD_FLAGSSHIFT) | \
	((vtype) << _CMD_VTYPESHIFT) | \
	((nr)    << _CMD_NSHIFT))
#define _CMDC(dir, vtype, nr)    _CMDCF(dir, 0, vtype, nr)
#define _CMDCNW(dir, vtype, nr)  _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)

/*
 * Used to decode cmds..
*/
#define _CMD_DIR(cmd)            (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
#define _CMD_FLAGS(cmd)          (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
#define _CMD_VTYPE(cmd)          (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
#define _CMD_N(cmd)              (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)

enum vnic_devcmd_cmd {
	CMD_NONE                = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),

	/* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */
	CMD_MCPU_FW_INFO        = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),

	/* dev-specific block member:
	 *    in: (u16)a0=offset,(u8)a1=size
	 *    out: a0=value */
	CMD_DEV_SPEC            = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),

	/* stats clear */
	CMD_STATS_CLEAR         = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),

	/* stats dump in mem: (u64)a0=paddr to stats area,
	 *                    (u16)a1=sizeof stats area */
	CMD_STATS_DUMP          = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),

	/* nic_cfg in (u32)a0 */
	CMD_NIC_CFG             = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),

	/* set struct vnic_devcmd_notify buffer in mem:
	 * in:
	 *   (u64)a0=paddr to notify (set paddr=0 to unset)
	 *   (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
	 *   (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
	 * out:
	 *   (u32)a1 = effective size
	 */
	CMD_NOTIFY              = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),

	/* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
	CMD_OPEN		= _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),

	/* open status:
	 *    out: a0=0 open complete, a0=1 open in progress */
	CMD_OPEN_STATUS		= _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),

	/* close vnic */
	CMD_CLOSE		= _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),

	/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
	CMD_INIT		= _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),

	/* enable virtual link */
	CMD_ENABLE		= _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),

	/* enable virtual link, waiting variant. */
	CMD_ENABLE_WAIT		= _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),

	/* disable virtual link */
	CMD_DISABLE		= _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),

	/* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */
	CMD_STATS_DUMP_ALL	= _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),

	/* init status:
	 *    out: a0=0 init complete, a0=1 init in progress
	 *         if a0=0, a1=errno */
	CMD_INIT_STATUS		= _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),

	/* undo initialize of virtual link */
	CMD_DEINIT		= _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),

	/* check fw capability of a cmd:
	 * in:  (u32)a0=cmd
	 * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
	CMD_CAPABILITY      = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),

	/*
	 * Initialization for the devcmd2 interface.
	 * in: (u64) a0=host result buffer physical address
	 * in: (u16) a1=number of entries in result buffer
	 */
	CMD_INITIALIZE_DEVCMD2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 57)
};

/* flags for CMD_OPEN */
#define CMD_OPENF_OPROM		0x1	/* open coming from option rom */

/* flags for CMD_INIT */
#define CMD_INITF_DEFAULT_MAC	0x1	/* init with default mac addr */

/* flags for CMD_PACKET_FILTER */
#define CMD_PFILTER_DIRECTED		0x01
#define CMD_PFILTER_MULTICAST		0x02
#define CMD_PFILTER_BROADCAST		0x04
#define CMD_PFILTER_PROMISCUOUS		0x08
#define CMD_PFILTER_ALL_MULTICAST	0x10

enum vnic_devcmd_status {
	STAT_NONE = 0,
	STAT_BUSY = 1 << 0,	/* cmd in progress */
	STAT_ERROR = 1 << 1,	/* last cmd caused error (code in a0) */
};

enum vnic_devcmd_error {
	ERR_SUCCESS = 0,
	ERR_EINVAL = 1,
	ERR_EFAULT = 2,
	ERR_EPERM = 3,
	ERR_EBUSY = 4,
	ERR_ECMDUNKNOWN = 5,
	ERR_EBADSTATE = 6,
	ERR_ENOMEM = 7,
	ERR_ETIMEDOUT = 8,
	ERR_ELINKDOWN = 9,
};

struct vnic_devcmd_fw_info {
	char fw_version[32];
	char fw_build[32];
	char hw_version[32];
	char hw_serial_number[32];
};

struct vnic_devcmd_notify {
	u32 csum;		/* checksum over following words */

	u32 link_state;		/* link up == 1 */
	u32 port_speed;		/* effective port speed (rate limit) */
	u32 mtu;		/* MTU */
	u32 msglvl;		/* requested driver msg lvl */
	u32 uif;		/* uplink interface */
	u32 status;		/* status bits (see VNIC_STF_*) */
	u32 error;		/* error code (see ERR_*) for first ERR */
	u32 link_down_cnt;	/* running count of link down transitions */
};
#define VNIC_STF_FATAL_ERR	0x0001	/* fatal fw error */

struct vnic_devcmd_provinfo {
	u8 oui[3];
	u8 type;
	u8 data[0];
};

/*
 * Writing cmd register causes STAT_BUSY to get set in status register.
 * When cmd completes, STAT_BUSY will be cleared.
 *
 * If cmd completed successfully STAT_ERROR will be clear
 * and args registers contain cmd-specific results.
 *
 * If cmd error, STAT_ERROR will be set and args[0] contains error code.
 *
 * status register is read-only.  While STAT_BUSY is set,
 * all other register contents are read-only.
 */

/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
#define VNIC_DEVCMD_NARGS 15
struct vnic_devcmd {
	u32 status;			/* RO */
	u32 cmd;			/* RW */
	u64 args[VNIC_DEVCMD_NARGS];	/* RW cmd args (little-endian) */
};


/*
 * Version 2 of the interface.
 *
 * Some things are carried over, notably the vnic_devcmd_cmd enum.
 */

/*
 * Flags for vnic_devcmd2.flags
 */

#define DEVCMD2_FNORESULT       0x1     /* Don't copy result to host */

#define VNIC_DEVCMD2_NARGS      VNIC_DEVCMD_NARGS
struct vnic_devcmd2 {
	u16 pad;
	u16 flags;
	u32 cmd;                /* same command #defines as original */
	u64 args[VNIC_DEVCMD2_NARGS];
};

#define VNIC_DEVCMD2_NRESULTS   VNIC_DEVCMD_NARGS
struct devcmd2_result {
	u64 results[VNIC_DEVCMD2_NRESULTS];
	u32 pad;
	u16 completed_index;    /* into copy WQ */
	u8  error;              /* same error codes as original */
	u8  color;              /* 0 or 1 as with completion queues */
};

#define DEVCMD2_RING_SIZE   32
#define DEVCMD2_DESC_SIZE   128

#define DEVCMD2_RESULTS_SIZE_MAX   ((1 << 16) - 1)

#endif /* _VNIC_DEVCMD_H_ */
Commit	Line	Data
c8806b6c NM	1	/*
	2	* Copyright 2014 Cisco Systems, Inc. All rights reserved.
	3	*
	4	* This program is free software; you may redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; version 2 of the License.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	9	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	10	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	11	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	12	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	13	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	14	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	15	* SOFTWARE.
	16	*/
	17
	18	#ifndef _VNIC_DEVCMD_H_
	19	#define _VNIC_DEVCMD_H_
	20
	21	#define _CMD_NBITS 14
	22	#define _CMD_VTYPEBITS 10
	23	#define _CMD_FLAGSBITS 6
	24	#define _CMD_DIRBITS 2
	25
	26	#define _CMD_NMASK ((1 << _CMD_NBITS)-1)
	27	#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1)
	28	#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1)
	29	#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1)
	30
	31	#define _CMD_NSHIFT 0
	32	#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
	33	#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
	34	#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
	35
	36	/*
	37	* Direction bits (from host perspective).
	38	*/
	39	#define _CMD_DIR_NONE 0U
	40	#define _CMD_DIR_WRITE 1U
	41	#define _CMD_DIR_READ 2U
	42	#define _CMD_DIR_RW (_CMD_DIR_WRITE \| _CMD_DIR_READ)
	43
	44	/*
	45	* Flag bits.
	46	*/
	47	#define _CMD_FLAGS_NONE 0U
	48	#define _CMD_FLAGS_NOWAIT 1U
	49
	50	/*
	51	* vNIC type bits.
	52	*/
	53	#define _CMD_VTYPE_NONE 0U
	54	#define _CMD_VTYPE_ENET 1U
	55	#define _CMD_VTYPE_FC 2U
	56	#define _CMD_VTYPE_SCSI 4U
	57	#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET \| _CMD_VTYPE_FC \| _CMD_VTYPE_SCSI)
	58
	59	/*
	60	* Used to create cmds..
	61	*/
	62	#define _CMDCF(dir, flags, vtype, nr) \
	63	(((dir) << _CMD_DIRSHIFT) \| \
	64	((flags) << _CMD_FLAGSSHIFT) \| \
65	((vtype) << _CMD_VTYPESHIFT) \| \
66	((nr) << _CMD_NSHIFT))
67	#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr)
68	#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
69
70	/*
71	* Used to decode cmds..
72	*/
73	#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
74	#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
75	#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
76	#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
77
78	enum vnic_devcmd_cmd {
79	CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),
80
81	/* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */
82	CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),
83
84	/* dev-specific block member:
85	* in: (u16)a0=offset,(u8)a1=size
86	* out: a0=value */
87	CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),
88
89	/* stats clear */
90	CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),
91
92	/* stats dump in mem: (u64)a0=paddr to stats area,
93	* (u16)a1=sizeof stats area */
94	CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),
95
96	/* nic_cfg in (u32)a0 */
97	CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),
98
99	/* set struct vnic_devcmd_notify buffer in mem:
100	* in:
101	* (u64)a0=paddr to notify (set paddr=0 to unset)
102	* (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
103	* (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
104	* out:
105	* (u32)a1 = effective size
106	*/
107	CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),
108
109	/* initiate open sequence (u32)a0=flags (see CMD_OPENF_) /
110	CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),
111
112	/* open status:
113	* out: a0=0 open complete, a0=1 open in progress */
114	CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),
115
116	/* close vnic */
117	CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
118
119	/* initialize virtual link: (u32)a0=flags (see CMD_INITF_) /
120	CMD_INIT = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
121
122	/* enable virtual link */
123	CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
124
125	/* enable virtual link, waiting variant. */
126	CMD_ENABLE_WAIT = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
127
128	/* disable virtual link */
129	CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),
130
131	/* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */
132	CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),
133
134	/* init status:
135	* out: a0=0 init complete, a0=1 init in progress
136	* if a0=0, a1=errno */
137	CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),
138
139	/* undo initialize of virtual link */
140	CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
141
142	/* check fw capability of a cmd:
143	* in: (u32)a0=cmd
144	* out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
145	CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
146
147	/*
148	* Initialization for the devcmd2 interface.
149	* in: (u64) a0=host result buffer physical address
150	* in: (u16) a1=number of entries in result buffer
151	*/
152	CMD_INITIALIZE_DEVCMD2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 57)
153	};
154
155	/* flags for CMD_OPEN */
156	#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */
157
158	/* flags for CMD_INIT */
159	#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */
160
161	/* flags for CMD_PACKET_FILTER */
162	#define CMD_PFILTER_DIRECTED 0x01
163	#define CMD_PFILTER_MULTICAST 0x02
164	#define CMD_PFILTER_BROADCAST 0x04
165	#define CMD_PFILTER_PROMISCUOUS 0x08
166	#define CMD_PFILTER_ALL_MULTICAST 0x10
167
168	enum vnic_devcmd_status {
169	STAT_NONE = 0,
170	STAT_BUSY = 1 << 0, /* cmd in progress */
171	STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */
172	};
173
174	enum vnic_devcmd_error {
175	ERR_SUCCESS = 0,
176	ERR_EINVAL = 1,
177	ERR_EFAULT = 2,
178	ERR_EPERM = 3,
179	ERR_EBUSY = 4,
180	ERR_ECMDUNKNOWN = 5,
181	ERR_EBADSTATE = 6,
182	ERR_ENOMEM = 7,
183	ERR_ETIMEDOUT = 8,
184	ERR_ELINKDOWN = 9,
185	};
186
187	struct vnic_devcmd_fw_info {
188	char fw_version[32];
189	char fw_build[32];
190	char hw_version[32];
191	char hw_serial_number[32];
192	};
193
194	struct vnic_devcmd_notify {
195	u32 csum; /* checksum over following words */
196
197	u32 link_state; /* link up == 1 */
198	u32 port_speed; /* effective port speed (rate limit) */
199	u32 mtu; /* MTU */
200	u32 msglvl; /* requested driver msg lvl */
201	u32 uif; /* uplink interface */
202	u32 status; /* status bits (see VNIC_STF_) /
203	u32 error; /* error code (see ERR_) for first ERR /
204	u32 link_down_cnt; /* running count of link down transitions */
205	};
206	#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */
207
208	struct vnic_devcmd_provinfo {
209	u8 oui[3];
210	u8 type;
211	u8 data[0];
212	};
213
214	/*
215	* Writing cmd register causes STAT_BUSY to get set in status register.
216	* When cmd completes, STAT_BUSY will be cleared.
217	*
218	* If cmd completed successfully STAT_ERROR will be clear
219	* and args registers contain cmd-specific results.
220	*
221	* If cmd error, STAT_ERROR will be set and args[0] contains error code.
222	*
223	* status register is read-only. While STAT_BUSY is set,
224	* all other register contents are read-only.
225	*/
226
227	/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
228	#define VNIC_DEVCMD_NARGS 15
229	struct vnic_devcmd {
230	u32 status; /* RO */
231	u32 cmd; /* RW */
232	u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */
233	};
234
235
236	/*
237	* Version 2 of the interface.
238	*
239	* Some things are carried over, notably the vnic_devcmd_cmd enum.
240	*/
241
242	/*
243	* Flags for vnic_devcmd2.flags
244	*/
245
246	#define DEVCMD2_FNORESULT 0x1 /* Don't copy result to host */
247
248	#define VNIC_DEVCMD2_NARGS VNIC_DEVCMD_NARGS
249	struct vnic_devcmd2 {
250	u16 pad;
251	u16 flags;
252	u32 cmd; /* same command #defines as original */
253	u64 args[VNIC_DEVCMD2_NARGS];
254	};
255
256	#define VNIC_DEVCMD2_NRESULTS VNIC_DEVCMD_NARGS
257	struct devcmd2_result {
258	u64 results[VNIC_DEVCMD2_NRESULTS];
259	u32 pad;
260	u16 completed_index; /* into copy WQ */
261	u8 error; /* same error codes as original */
262	u8 color; /* 0 or 1 as with completion queues */
263	};
264
265	#define DEVCMD2_RING_SIZE 32
266	#define DEVCMD2_DESC_SIZE 128
267
268	#define DEVCMD2_RESULTS_SIZE_MAX ((1 << 16) - 1)
269
270	#endif /* _VNIC_DEVCMD_H_ */