diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h new file mode 100644 index 000000000..c98032e38 --- /dev/null +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h @@ -0,0 +1,140 @@ +/* Broadcom NetXtreme-C/E network driver. + * + * Copyright (c) 2020 Broadcom Limited + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation. + */ + +#ifndef BNXT_HWRM_H +#define BNXT_HWRM_H + +#include "bnxt_hsi.h" + +enum bnxt_hwrm_ctx_flags { + /* Update the HWRM_API_FLAGS right below for any new non-internal bit added here */ + BNXT_HWRM_INTERNAL_CTX_OWNED = BIT(0), /* caller owns the context */ + BNXT_HWRM_INTERNAL_RESP_DIRTY = BIT(1), /* response contains data */ + BNXT_HWRM_CTX_SILENT = BIT(2), /* squelch firmware errors */ + BNXT_HWRM_FULL_WAIT = BIT(3), /* wait for full timeout of HWRM command */ +}; + +#define HWRM_API_FLAGS (BNXT_HWRM_CTX_SILENT | BNXT_HWRM_FULL_WAIT) + +struct bnxt_hwrm_ctx { + u64 sentinel; + dma_addr_t dma_handle; + struct output *resp; + struct input *req; + dma_addr_t slice_handle; + void *slice_addr; + u32 slice_size; + u32 req_len; + enum bnxt_hwrm_ctx_flags flags; + unsigned int timeout; + u32 allocated; + gfp_t gfp; +}; + +enum bnxt_hwrm_wait_state { + BNXT_HWRM_PENDING, + BNXT_HWRM_DEFERRED, + BNXT_HWRM_COMPLETE, + BNXT_HWRM_CANCELLED, +}; + +enum bnxt_hwrm_chnl { BNXT_HWRM_CHNL_CHIMP, BNXT_HWRM_CHNL_KONG }; + +struct bnxt_hwrm_wait_token { + struct rcu_head rcu; + struct hlist_node node; + enum bnxt_hwrm_wait_state state; + enum bnxt_hwrm_chnl dst; + u16 seq_id; +}; + +void hwrm_update_token(struct bnxt *bp, u16 seq, enum bnxt_hwrm_wait_state s); + +#define BNXT_HWRM_MAX_REQ_LEN (bp->hwrm_max_req_len) +#define BNXT_HWRM_SHORT_REQ_LEN sizeof(struct hwrm_short_input) +#define HWRM_CMD_MAX_TIMEOUT 40000U +#define SHORT_HWRM_CMD_TIMEOUT 20 +#define HWRM_CMD_TIMEOUT (bp->hwrm_cmd_timeout) +#define HWRM_RESET_TIMEOUT ((HWRM_CMD_TIMEOUT) * 4) +#define BNXT_HWRM_TARGET 0xffff +#define BNXT_HWRM_NO_CMPL_RING -1 +#define BNXT_HWRM_REQ_MAX_SIZE 128 +#define BNXT_HWRM_DMA_SIZE (2 * PAGE_SIZE) /* space for req+resp */ +#define BNXT_HWRM_RESP_RESERVED PAGE_SIZE +#define BNXT_HWRM_RESP_OFFSET (BNXT_HWRM_DMA_SIZE - \ + BNXT_HWRM_RESP_RESERVED) +#define BNXT_HWRM_CTX_OFFSET (BNXT_HWRM_RESP_OFFSET - \ + sizeof(struct bnxt_hwrm_ctx)) +#define BNXT_HWRM_DMA_ALIGN 16 +#define BNXT_HWRM_SENTINEL 0xb6e1f68a12e9a7eb /* arbitrary value */ +#define BNXT_HWRM_REQS_PER_PAGE (BNXT_PAGE_SIZE / \ + BNXT_HWRM_REQ_MAX_SIZE) +#define HWRM_SHORT_MIN_TIMEOUT 3 +#define HWRM_SHORT_MAX_TIMEOUT 10 +#define HWRM_SHORT_TIMEOUT_COUNTER 5 + +#define HWRM_MIN_TIMEOUT 25 +#define HWRM_MAX_TIMEOUT 40 + +static inline unsigned int hwrm_total_timeout(unsigned int n) +{ + return n <= HWRM_SHORT_TIMEOUT_COUNTER ? n * HWRM_SHORT_MIN_TIMEOUT : + HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT + + (n - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT; +} + + +#define HWRM_VALID_BIT_DELAY_USEC 50000 + +static inline bool bnxt_cfa_hwrm_message(u16 req_type) +{ + switch (req_type) { + case HWRM_CFA_ENCAP_RECORD_ALLOC: + case HWRM_CFA_ENCAP_RECORD_FREE: + case HWRM_CFA_DECAP_FILTER_ALLOC: + case HWRM_CFA_DECAP_FILTER_FREE: + case HWRM_CFA_EM_FLOW_ALLOC: + case HWRM_CFA_EM_FLOW_FREE: + case HWRM_CFA_EM_FLOW_CFG: + case HWRM_CFA_FLOW_ALLOC: + case HWRM_CFA_FLOW_FREE: + case HWRM_CFA_FLOW_INFO: + case HWRM_CFA_FLOW_FLUSH: + case HWRM_CFA_FLOW_STATS: + case HWRM_CFA_METER_PROFILE_ALLOC: + case HWRM_CFA_METER_PROFILE_FREE: + case HWRM_CFA_METER_PROFILE_CFG: + case HWRM_CFA_METER_INSTANCE_ALLOC: + case HWRM_CFA_METER_INSTANCE_FREE: + return true; + default: + return false; + } +} + +static inline bool bnxt_kong_hwrm_message(struct bnxt *bp, struct input *req) +{ + return (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL && + (bnxt_cfa_hwrm_message(le16_to_cpu(req->req_type)) || + le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG)); +} + +int __hwrm_req_init(struct bnxt *bp, void **req, u16 req_type, u32 req_len); +#define hwrm_req_init(bp, req, req_type) \ + __hwrm_req_init((bp), (void **)&(req), (req_type), sizeof(*(req))) +void *hwrm_req_hold(struct bnxt *bp, void *req); +void hwrm_req_drop(struct bnxt *bp, void *req); +void hwrm_req_flags(struct bnxt *bp, void *req, enum bnxt_hwrm_ctx_flags flags); +void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout); +int hwrm_req_send(struct bnxt *bp, void *req); +int hwrm_req_send_silent(struct bnxt *bp, void *req); +int hwrm_req_replace(struct bnxt *bp, void *req, void *new_req, u32 len); +void hwrm_req_alloc_flags(struct bnxt *bp, void *req, gfp_t flags); +void *hwrm_req_dma_slice(struct bnxt *bp, void *req, u32 size, dma_addr_t *dma); +#endif |