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 13 #define ICE_CTL_Q_DESC(R, i) \ 14 (&(((struct ice_aq_desc *)((R).desc_buf.va))[i])) 15 16 #define ICE_CTL_Q_DESC_UNUSED(R) \ 17 (u16)((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ 18 (R)->next_to_clean - (R)->next_to_use - 1) 19 20 /* Defines that help manage the driver vs FW API checks. 21 * Take a look at ice_aq_ver_check in ice_controlq.c for actual usage. 22 * 23 */ 24 #define EXP_FW_API_VER_BRANCH 0x00 25 #define EXP_FW_API_VER_MAJOR 0x00 26 #define EXP_FW_API_VER_MINOR 0x01 27 28 /* Different control queue types: These are mainly for SW consumption. */ 29 enum ice_ctl_q { 30 ICE_CTL_Q_UNKNOWN = 0, 31 ICE_CTL_Q_ADMIN, 32 ICE_CTL_Q_MAILBOX, 33 }; 34 35 /* Control Queue default settings */ 36 #define ICE_CTL_Q_SQ_CMD_TIMEOUT 250 /* msecs */ 37 38 struct ice_ctl_q_ring { 39 void *dma_head; /* Virtual address to dma head */ 40 struct ice_dma_mem desc_buf; /* descriptor ring memory */ 41 void *cmd_buf; /* command buffer memory */ 42 43 union { 44 struct ice_dma_mem *sq_bi; 45 struct ice_dma_mem *rq_bi; 46 } r; 47 48 u16 count; /* Number of descriptors */ 49 50 /* used for interrupt processing */ 51 u16 next_to_use; 52 u16 next_to_clean; 53 54 /* used for queue tracking */ 55 u32 head; 56 u32 tail; 57 u32 len; 58 u32 bah; 59 u32 bal; 60 u32 len_mask; 61 u32 len_ena_mask; 62 u32 head_mask; 63 }; 64 65 /* sq transaction details */ 66 struct ice_sq_cd { 67 struct ice_aq_desc *wb_desc; 68 }; 69 70 #define ICE_CTL_Q_DETAILS(R, i) (&(((struct ice_sq_cd *)((R).cmd_buf))[i])) 71 72 /* rq event information */ 73 struct ice_rq_event_info { 74 struct ice_aq_desc desc; 75 u16 msg_len; 76 u16 buf_len; 77 u8 *msg_buf; 78 }; 79 80 /* Control Queue information */ 81 struct ice_ctl_q_info { 82 enum ice_ctl_q qtype; 83 struct ice_ctl_q_ring rq; /* receive queue */ 84 struct ice_ctl_q_ring sq; /* send queue */ 85 u32 sq_cmd_timeout; /* send queue cmd write back timeout */ 86 u16 num_rq_entries; /* receive queue depth */ 87 u16 num_sq_entries; /* send queue depth */ 88 u16 rq_buf_size; /* receive queue buffer size */ 89 u16 sq_buf_size; /* send queue buffer size */ 90 struct mutex sq_lock; /* Send queue lock */ 91 struct mutex rq_lock; /* Receive queue lock */ 92 enum ice_aq_err sq_last_status; /* last status on send queue */ 93 enum ice_aq_err rq_last_status; /* last status on receive queue */ 94 }; 95 96 #endif /* _ICE_CONTROLQ_H_ */ 97