1 /* Broadcom NetXtreme-C/E network driver.
3 * Copyright (c) 2020 Broadcom Limited
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
15 enum 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 */
23 #define HWRM_API_FLAGS (BNXT_HWRM_CTX_SILENT | BNXT_HWRM_FULL_WAIT)
25 struct bnxt_hwrm_ctx
{
27 dma_addr_t dma_handle
;
30 dma_addr_t slice_handle
;
34 enum bnxt_hwrm_ctx_flags flags
;
40 enum bnxt_hwrm_wait_state
{
47 enum bnxt_hwrm_chnl
{ BNXT_HWRM_CHNL_CHIMP
, BNXT_HWRM_CHNL_KONG
};
49 struct bnxt_hwrm_wait_token
{
51 struct hlist_node node
;
52 enum bnxt_hwrm_wait_state state
;
53 enum bnxt_hwrm_chnl dst
;
57 void hwrm_update_token(struct bnxt
*bp
, u16 seq
, enum bnxt_hwrm_wait_state s
);
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 40000
62 #define SHORT_HWRM_CMD_TIMEOUT 20
63 #define HWRM_CMD_TIMEOUT (bp->hwrm_cmd_timeout)
64 #define HWRM_RESET_TIMEOUT ((HWRM_CMD_TIMEOUT) * 4)
65 #define HWRM_COREDUMP_TIMEOUT ((HWRM_CMD_TIMEOUT) * 12)
66 #define BNXT_HWRM_TARGET 0xffff
67 #define BNXT_HWRM_NO_CMPL_RING -1
68 #define BNXT_HWRM_REQ_MAX_SIZE 128
69 #define BNXT_HWRM_DMA_SIZE (2 * PAGE_SIZE) /* space for req+resp */
70 #define BNXT_HWRM_RESP_RESERVED PAGE_SIZE
71 #define BNXT_HWRM_RESP_OFFSET (BNXT_HWRM_DMA_SIZE - \
72 BNXT_HWRM_RESP_RESERVED)
73 #define BNXT_HWRM_CTX_OFFSET (BNXT_HWRM_RESP_OFFSET - \
74 sizeof(struct bnxt_hwrm_ctx))
75 #define BNXT_HWRM_DMA_ALIGN 16
76 #define BNXT_HWRM_SENTINEL 0xb6e1f68a12e9a7eb /* arbitrary value */
77 #define BNXT_HWRM_REQS_PER_PAGE (BNXT_PAGE_SIZE / \
78 BNXT_HWRM_REQ_MAX_SIZE)
79 #define HWRM_SHORT_MIN_TIMEOUT 3
80 #define HWRM_SHORT_MAX_TIMEOUT 10
81 #define HWRM_SHORT_TIMEOUT_COUNTER 5
83 #define HWRM_MIN_TIMEOUT 25
84 #define HWRM_MAX_TIMEOUT 40
86 #define HWRM_WAIT_MUST_ABORT(bp, ctx) \
87 (le16_to_cpu((ctx)->req->req_type) != HWRM_VER_GET && \
88 !bnxt_is_fw_healthy(bp))
90 static inline unsigned int hwrm_total_timeout(unsigned int n
)
92 return n
<= HWRM_SHORT_TIMEOUT_COUNTER
? n
* HWRM_SHORT_MIN_TIMEOUT
:
93 HWRM_SHORT_TIMEOUT_COUNTER
* HWRM_SHORT_MIN_TIMEOUT
+
94 (n
- HWRM_SHORT_TIMEOUT_COUNTER
) * HWRM_MIN_TIMEOUT
;
98 #define HWRM_VALID_BIT_DELAY_USEC 150
100 static inline bool bnxt_cfa_hwrm_message(u16 req_type
)
103 case HWRM_CFA_ENCAP_RECORD_ALLOC
:
104 case HWRM_CFA_ENCAP_RECORD_FREE
:
105 case HWRM_CFA_DECAP_FILTER_ALLOC
:
106 case HWRM_CFA_DECAP_FILTER_FREE
:
107 case HWRM_CFA_EM_FLOW_ALLOC
:
108 case HWRM_CFA_EM_FLOW_FREE
:
109 case HWRM_CFA_EM_FLOW_CFG
:
110 case HWRM_CFA_FLOW_ALLOC
:
111 case HWRM_CFA_FLOW_FREE
:
112 case HWRM_CFA_FLOW_INFO
:
113 case HWRM_CFA_FLOW_FLUSH
:
114 case HWRM_CFA_FLOW_STATS
:
115 case HWRM_CFA_METER_PROFILE_ALLOC
:
116 case HWRM_CFA_METER_PROFILE_FREE
:
117 case HWRM_CFA_METER_PROFILE_CFG
:
118 case HWRM_CFA_METER_INSTANCE_ALLOC
:
119 case HWRM_CFA_METER_INSTANCE_FREE
:
126 static inline bool bnxt_kong_hwrm_message(struct bnxt
*bp
, struct input
*req
)
128 return (bp
->fw_cap
& BNXT_FW_CAP_KONG_MB_CHNL
&&
129 (bnxt_cfa_hwrm_message(le16_to_cpu(req
->req_type
)) ||
130 le16_to_cpu(req
->target_id
) == HWRM_TARGET_ID_KONG
));
133 int __hwrm_req_init(struct bnxt
*bp
, void **req
, u16 req_type
, u32 req_len
);
134 #define hwrm_req_init(bp, req, req_type) \
135 __hwrm_req_init((bp), (void **)&(req), (req_type), sizeof(*(req)))
136 void *hwrm_req_hold(struct bnxt
*bp
, void *req
);
137 void hwrm_req_drop(struct bnxt
*bp
, void *req
);
138 void hwrm_req_flags(struct bnxt
*bp
, void *req
, enum bnxt_hwrm_ctx_flags flags
);
139 void hwrm_req_timeout(struct bnxt
*bp
, void *req
, unsigned int timeout
);
140 int hwrm_req_send(struct bnxt
*bp
, void *req
);
141 int hwrm_req_send_silent(struct bnxt
*bp
, void *req
);
142 int hwrm_req_replace(struct bnxt
*bp
, void *req
, void *new_req
, u32 len
);
143 void hwrm_req_alloc_flags(struct bnxt
*bp
, void *req
, gfp_t flags
);
144 void *hwrm_req_dma_slice(struct bnxt
*bp
, void *req
, u32 size
, dma_addr_t
*dma
);