1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018, Intel Corporation. */
4 #ifndef _ICE_CONTROLQ_H_
5 #define _ICE_CONTROLQ_H_
7 #include "ice_adminq_cmd.h"
9 /* Maximum buffer lengths for all control queue types */
10 #define ICE_AQ_MAX_BUF_LEN 4096
12 #define ICE_CTL_Q_DESC(R, i) \
13 (&(((struct ice_aq_desc *)((R).desc_buf.va))[i]))
15 #define ICE_CTL_Q_DESC_UNUSED(R) \
16 (u16)((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
17 (R)->next_to_clean - (R)->next_to_use - 1)
19 /* Defines that help manage the driver vs FW API checks.
20 * Take a look at ice_aq_ver_check in ice_controlq.c for actual usage.
23 #define EXP_FW_API_VER_BRANCH 0x00
24 #define EXP_FW_API_VER_MAJOR 0x00
25 #define EXP_FW_API_VER_MINOR 0x01
27 /* Different control queue types: These are mainly for SW consumption. */
29 ICE_CTL_Q_UNKNOWN = 0,
33 /* Control Queue timeout settings - max delay 1s */
34 #define ICE_CTL_Q_SQ_CMD_TIMEOUT 10000 /* Count 10000 times */
35 #define ICE_CTL_Q_SQ_CMD_USEC 100 /* Check every 100usec */
37 struct ice_ctl_q_ring {
38 void *dma_head; /* Virtual address to dma head */
39 struct ice_dma_mem desc_buf; /* descriptor ring memory */
40 void *cmd_buf; /* command buffer memory */
43 struct ice_dma_mem *sq_bi;
44 struct ice_dma_mem *rq_bi;
47 u16 count; /* Number of descriptors */
49 /* used for interrupt processing */
53 /* used for queue tracking */
64 /* sq transaction details */
66 struct ice_aq_desc *wb_desc;
69 #define ICE_CTL_Q_DETAILS(R, i) (&(((struct ice_sq_cd *)((R).cmd_buf))[i]))
71 /* rq event information */
72 struct ice_rq_event_info {
73 struct ice_aq_desc desc;
79 /* Control Queue information */
80 struct ice_ctl_q_info {
82 struct ice_ctl_q_ring rq; /* receive queue */
83 struct ice_ctl_q_ring sq; /* send queue */
84 u32 sq_cmd_timeout; /* send queue cmd write back timeout */
85 u16 num_rq_entries; /* receive queue depth */
86 u16 num_sq_entries; /* send queue depth */
87 u16 rq_buf_size; /* receive queue buffer size */
88 u16 sq_buf_size; /* send queue buffer size */
89 struct mutex sq_lock; /* Send queue lock */
90 struct mutex rq_lock; /* Receive queue lock */
91 enum ice_aq_err sq_last_status; /* last status on send queue */
92 enum ice_aq_err rq_last_status; /* last status on receive queue */
95 #endif /* _ICE_CONTROLQ_H_ */