1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ 2 /* Copyright (C) 2018 Netronome Systems, Inc. */ 3 4 #ifndef __NFP_ABI__ 5 #define __NFP_ABI__ 1 6 7 #include <linux/types.h> 8 9 #define NFP_MBOX_SYM_NAME "_abi_nfd_pf%u_mbox" 10 #define NFP_MBOX_SYM_MIN_SIZE 16 /* When no data needed */ 11 12 #define NFP_MBOX_CMD 0x00 13 #define NFP_MBOX_RET 0x04 14 #define NFP_MBOX_DATA_LEN 0x08 15 #define NFP_MBOX_RESERVED 0x0c 16 #define NFP_MBOX_DATA 0x10 17 18 /** 19 * enum nfp_mbox_cmd - PF mailbox commands 20 * 21 * @NFP_MBOX_NO_CMD: null command 22 * Used to indicate previous command has finished. 23 * 24 * @NFP_MBOX_POOL_GET: get shared buffer pool info/config 25 * Input - struct nfp_shared_buf_pool_id 26 * Output - struct nfp_shared_buf_pool_info_get 27 * 28 * @NFP_MBOX_POOL_SET: set shared buffer pool info/config 29 * Input - struct nfp_shared_buf_pool_info_set 30 * Output - None 31 * 32 * @NFP_MBOX_PCIE_ABM_ENABLE: enable PCIe-side advanced buffer management 33 * Enable advanced buffer management of the PCIe block. If ABM is disabled 34 * PCIe block maintains a very short queue of buffers and does tail drop. 35 * ABM allows more advanced buffering and priority control. 36 * Input - None 37 * Output - None 38 * 39 * @NFP_MBOX_PCIE_ABM_DISABLE: disable PCIe-side advanced buffer management 40 * Input - None 41 * Output - None 42 */ 43 enum nfp_mbox_cmd { 44 NFP_MBOX_NO_CMD = 0x00, 45 46 NFP_MBOX_POOL_GET = 0x01, 47 NFP_MBOX_POOL_SET = 0x02, 48 49 NFP_MBOX_PCIE_ABM_ENABLE = 0x03, 50 NFP_MBOX_PCIE_ABM_DISABLE = 0x04, 51 }; 52 53 #define NFP_SHARED_BUF_COUNT_SYM_NAME "_abi_nfd_pf%u_sb_cnt" 54 #define NFP_SHARED_BUF_TABLE_SYM_NAME "_abi_nfd_pf%u_sb_tbl" 55 56 /** 57 * struct nfp_shared_buf - NFP shared buffer description 58 * @id: numerical user-visible id of the shared buffer 59 * @size: size in bytes of the buffer 60 * @ingress_pools_count: number of ingress pools 61 * @egress_pools_count: number of egress pools 62 * @ingress_tc_count: number of ingress trafic classes 63 * @egress_tc_count: number of egress trafic classes 64 * @pool_size_unit: pool size may be in credits, each credit is 65 * @pool_size_unit bytes 66 */ 67 struct nfp_shared_buf { 68 __le32 id; 69 __le32 size; 70 __le16 ingress_pools_count; 71 __le16 egress_pools_count; 72 __le16 ingress_tc_count; 73 __le16 egress_tc_count; 74 75 __le32 pool_size_unit; 76 }; 77 78 /** 79 * struct nfp_shared_buf_pool_id - shared buffer pool identification 80 * @shared_buf: shared buffer id 81 * @pool: pool index 82 */ 83 struct nfp_shared_buf_pool_id { 84 __le32 shared_buf; 85 __le32 pool; 86 }; 87 88 /** 89 * struct nfp_shared_buf_pool_info_get - struct devlink_sb_pool_info mirror 90 * @pool_type: one of enum devlink_sb_pool_type 91 * @size: pool size in units of SB's @pool_size_unit 92 * @threshold_type: one of enum devlink_sb_threshold_type 93 */ 94 struct nfp_shared_buf_pool_info_get { 95 __le32 pool_type; 96 __le32 size; 97 __le32 threshold_type; 98 }; 99 100 /** 101 * struct nfp_shared_buf_pool_info_set - packed args of sb_pool_set 102 * @id: pool identification info 103 * @size: pool size in units of SB's @pool_size_unit 104 * @threshold_type: one of enum devlink_sb_threshold_type 105 */ 106 struct nfp_shared_buf_pool_info_set { 107 struct nfp_shared_buf_pool_id id; 108 __le32 size; 109 __le32 threshold_type; 110 }; 111 112 #endif 113