diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_abi.h')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_abi.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_abi.h b/drivers/net/ethernet/netronome/nfp/nfp_abi.h new file mode 100644 index 000000000..dd359a44a --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/nfp_abi.h @@ -0,0 +1,112 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* Copyright (C) 2018 Netronome Systems, Inc. */ + +#ifndef __NFP_ABI__ +#define __NFP_ABI__ 1 + +#include <linux/types.h> + +#define NFP_MBOX_SYM_NAME "_abi_nfd_pf%u_mbox" +#define NFP_MBOX_SYM_MIN_SIZE 16 /* When no data needed */ + +#define NFP_MBOX_CMD 0x00 +#define NFP_MBOX_RET 0x04 +#define NFP_MBOX_DATA_LEN 0x08 +#define NFP_MBOX_RESERVED 0x0c +#define NFP_MBOX_DATA 0x10 + +/** + * enum nfp_mbox_cmd - PF mailbox commands + * + * @NFP_MBOX_NO_CMD: null command + * Used to indicate previous command has finished. + * + * @NFP_MBOX_POOL_GET: get shared buffer pool info/config + * Input - struct nfp_shared_buf_pool_id + * Output - struct nfp_shared_buf_pool_info_get + * + * @NFP_MBOX_POOL_SET: set shared buffer pool info/config + * Input - struct nfp_shared_buf_pool_info_set + * Output - None + * + * @NFP_MBOX_PCIE_ABM_ENABLE: enable PCIe-side advanced buffer management + * Enable advanced buffer management of the PCIe block. If ABM is disabled + * PCIe block maintains a very short queue of buffers and does tail drop. + * ABM allows more advanced buffering and priority control. + * Input - None + * Output - None + * + * @NFP_MBOX_PCIE_ABM_DISABLE: disable PCIe-side advanced buffer management + * Input - None + * Output - None + */ +enum nfp_mbox_cmd { + NFP_MBOX_NO_CMD = 0x00, + + NFP_MBOX_POOL_GET = 0x01, + NFP_MBOX_POOL_SET = 0x02, + + NFP_MBOX_PCIE_ABM_ENABLE = 0x03, + NFP_MBOX_PCIE_ABM_DISABLE = 0x04, +}; + +#define NFP_SHARED_BUF_COUNT_SYM_NAME "_abi_nfd_pf%u_sb_cnt" +#define NFP_SHARED_BUF_TABLE_SYM_NAME "_abi_nfd_pf%u_sb_tbl" + +/** + * struct nfp_shared_buf - NFP shared buffer description + * @id: numerical user-visible id of the shared buffer + * @size: size in bytes of the buffer + * @ingress_pools_count: number of ingress pools + * @egress_pools_count: number of egress pools + * @ingress_tc_count: number of ingress trafic classes + * @egress_tc_count: number of egress trafic classes + * @pool_size_unit: pool size may be in credits, each credit is + * @pool_size_unit bytes + */ +struct nfp_shared_buf { + __le32 id; + __le32 size; + __le16 ingress_pools_count; + __le16 egress_pools_count; + __le16 ingress_tc_count; + __le16 egress_tc_count; + + __le32 pool_size_unit; +}; + +/** + * struct nfp_shared_buf_pool_id - shared buffer pool identification + * @shared_buf: shared buffer id + * @pool: pool index + */ +struct nfp_shared_buf_pool_id { + __le32 shared_buf; + __le32 pool; +}; + +/** + * struct nfp_shared_buf_pool_info_get - struct devlink_sb_pool_info mirror + * @pool_type: one of enum devlink_sb_pool_type + * @size: pool size in units of SB's @pool_size_unit + * @threshold_type: one of enum devlink_sb_threshold_type + */ +struct nfp_shared_buf_pool_info_get { + __le32 pool_type; + __le32 size; + __le32 threshold_type; +}; + +/** + * struct nfp_shared_buf_pool_info_set - packed args of sb_pool_set + * @id: pool identification info + * @size: pool size in units of SB's @pool_size_unit + * @threshold_type: one of enum devlink_sb_threshold_type + */ +struct nfp_shared_buf_pool_info_set { + struct nfp_shared_buf_pool_id id; + __le32 size; + __le32 threshold_type; +}; + +#endif |