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1/* Broadcom NetXtreme-C/E network driver.2 *3 * Copyright (c) 2020 Broadcom Limited4 *5 * This program is free software; you can redistribute it and/or modify6 * it under the terms of the GNU General Public License as published by7 * the Free Software Foundation.8 */9 10#ifndef BNXT_HWRM_H11#define BNXT_HWRM_H12 13#include "bnxt_hsi.h"14 15enum bnxt_hwrm_ctx_flags {16 /* Update the HWRM_API_FLAGS right below for any new non-internal bit added here */17 BNXT_HWRM_INTERNAL_CTX_OWNED = BIT(0), /* caller owns the context */18 BNXT_HWRM_INTERNAL_RESP_DIRTY = BIT(1), /* response contains data */19 BNXT_HWRM_CTX_SILENT = BIT(2), /* squelch firmware errors */20 BNXT_HWRM_FULL_WAIT = BIT(3), /* wait for full timeout of HWRM command */21};22 23#define HWRM_API_FLAGS (BNXT_HWRM_CTX_SILENT | BNXT_HWRM_FULL_WAIT)24 25struct bnxt_hwrm_ctx {26 u64 sentinel;27 dma_addr_t dma_handle;28 struct output *resp;29 struct input *req;30 dma_addr_t slice_handle;31 void *slice_addr;32 u32 slice_size;33 u32 req_len;34 enum bnxt_hwrm_ctx_flags flags;35 unsigned int timeout;36 u32 allocated;37 gfp_t gfp;38};39 40enum bnxt_hwrm_wait_state {41 BNXT_HWRM_PENDING,42 BNXT_HWRM_DEFERRED,43 BNXT_HWRM_COMPLETE,44 BNXT_HWRM_CANCELLED,45};46 47enum bnxt_hwrm_chnl { BNXT_HWRM_CHNL_CHIMP, BNXT_HWRM_CHNL_KONG };48 49struct bnxt_hwrm_wait_token {50 struct rcu_head rcu;51 struct hlist_node node;52 enum bnxt_hwrm_wait_state state;53 enum bnxt_hwrm_chnl dst;54 u16 seq_id;55};56 57void hwrm_update_token(struct bnxt *bp, u16 seq, enum bnxt_hwrm_wait_state s);58 59#define BNXT_HWRM_MAX_REQ_LEN (bp->hwrm_max_req_len)60#define BNXT_HWRM_SHORT_REQ_LEN sizeof(struct hwrm_short_input)61#define HWRM_CMD_MAX_TIMEOUT 40000U62#define SHORT_HWRM_CMD_TIMEOUT 2063#define HWRM_CMD_TIMEOUT (bp->hwrm_cmd_timeout)64#define HWRM_RESET_TIMEOUT ((HWRM_CMD_TIMEOUT) * 4)65#define BNXT_HWRM_TARGET 0xffff66#define BNXT_HWRM_NO_CMPL_RING -167#define BNXT_HWRM_REQ_MAX_SIZE 12868#define BNXT_HWRM_DMA_SIZE (2 * PAGE_SIZE) /* space for req+resp */69#define BNXT_HWRM_RESP_RESERVED PAGE_SIZE70#define BNXT_HWRM_RESP_OFFSET (BNXT_HWRM_DMA_SIZE - \71 BNXT_HWRM_RESP_RESERVED)72#define BNXT_HWRM_CTX_OFFSET (BNXT_HWRM_RESP_OFFSET - \73 sizeof(struct bnxt_hwrm_ctx))74#define BNXT_HWRM_DMA_ALIGN 1675#define BNXT_HWRM_SENTINEL 0xb6e1f68a12e9a7eb /* arbitrary value */76#define BNXT_HWRM_REQS_PER_PAGE (BNXT_PAGE_SIZE / \77 BNXT_HWRM_REQ_MAX_SIZE)78#define HWRM_SHORT_MIN_TIMEOUT 379#define HWRM_SHORT_MAX_TIMEOUT 1080#define HWRM_SHORT_TIMEOUT_COUNTER 581 82#define HWRM_MIN_TIMEOUT 2583#define HWRM_MAX_TIMEOUT 4084 85static inline unsigned int hwrm_total_timeout(unsigned int n)86{87 return n <= HWRM_SHORT_TIMEOUT_COUNTER ? n * HWRM_SHORT_MIN_TIMEOUT :88 HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT +89 (n - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT;90}91 92 93#define HWRM_VALID_BIT_DELAY_USEC 5000094 95static inline bool bnxt_cfa_hwrm_message(u16 req_type)96{97 switch (req_type) {98 case HWRM_CFA_ENCAP_RECORD_ALLOC:99 case HWRM_CFA_ENCAP_RECORD_FREE:100 case HWRM_CFA_DECAP_FILTER_ALLOC:101 case HWRM_CFA_DECAP_FILTER_FREE:102 case HWRM_CFA_EM_FLOW_ALLOC:103 case HWRM_CFA_EM_FLOW_FREE:104 case HWRM_CFA_EM_FLOW_CFG:105 case HWRM_CFA_FLOW_ALLOC:106 case HWRM_CFA_FLOW_FREE:107 case HWRM_CFA_FLOW_INFO:108 case HWRM_CFA_FLOW_FLUSH:109 case HWRM_CFA_FLOW_STATS:110 case HWRM_CFA_METER_PROFILE_ALLOC:111 case HWRM_CFA_METER_PROFILE_FREE:112 case HWRM_CFA_METER_PROFILE_CFG:113 case HWRM_CFA_METER_INSTANCE_ALLOC:114 case HWRM_CFA_METER_INSTANCE_FREE:115 return true;116 default:117 return false;118 }119}120 121static inline bool bnxt_kong_hwrm_message(struct bnxt *bp, struct input *req)122{123 return (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL &&124 (bnxt_cfa_hwrm_message(le16_to_cpu(req->req_type)) ||125 le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG));126}127 128int __hwrm_req_init(struct bnxt *bp, void **req, u16 req_type, u32 req_len);129#define hwrm_req_init(bp, req, req_type) \130 __hwrm_req_init((bp), (void **)&(req), (req_type), sizeof(*(req)))131void *hwrm_req_hold(struct bnxt *bp, void *req);132void hwrm_req_drop(struct bnxt *bp, void *req);133void hwrm_req_flags(struct bnxt *bp, void *req, enum bnxt_hwrm_ctx_flags flags);134void hwrm_req_timeout(struct bnxt *bp, void *req, unsigned int timeout);135int hwrm_req_send(struct bnxt *bp, void *req);136int hwrm_req_send_silent(struct bnxt *bp, void *req);137int hwrm_req_replace(struct bnxt *bp, void *req, void *new_req, u32 len);138void hwrm_req_alloc_flags(struct bnxt *bp, void *req, gfp_t flags);139void *hwrm_req_dma_slice(struct bnxt *bp, void *req, u32 size, dma_addr_t *dma);140 141/* Older devices can only support req length of 128.142 * HWRM_FUNC_CFG requests which don't need fields starting at143 * num_quic_tx_key_ctxs can use this helper to avoid getting -E2BIG.144 */145static inline int146bnxt_hwrm_func_cfg_short_req_init(struct bnxt *bp,147 struct hwrm_func_cfg_input **req)148{149 u32 req_len;150 151 req_len = min_t(u32, sizeof(**req), bp->hwrm_max_ext_req_len);152 return __hwrm_req_init(bp, (void **)req, HWRM_FUNC_CFG, req_len);153}154#endif155