[mirror_ubuntu-jammy-kernel.git] / drivers / net / ethernet / broadcom / bnxt / bnxt_hwrm.h

/* 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

#define HWRM_WAIT_MUST_ABORT(bp, ctx)					\
	(le16_to_cpu((ctx)->req->req_type) != HWRM_VER_GET &&		\
	 !bnxt_is_fw_healthy(bp))

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
Commit	Line	Data
3c8c20db EP	1	/* Broadcom NetXtreme-C/E network driver.
	2	*
	3	* Copyright (c) 2020 Broadcom Limited
	4	*
	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.
	8	*/
	9
	10	#ifndef BNXT_HWRM_H
	11	#define BNXT_HWRM_H
	12
	13	#include "bnxt_hsi.h"
	14
f9ff5782 EP	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 */
	21	};
	22
	23	#define HWRM_API_FLAGS (BNXT_HWRM_CTX_SILENT \| BNXT_HWRM_FULL_WAIT)
	24
	25	struct bnxt_hwrm_ctx {
	26	u64 sentinel;
	27	dma_addr_t dma_handle;
	28	struct output *resp;
	29	struct input *req;
21380817 EP	30	dma_addr_t slice_handle;
	31	void *slice_addr;
	32	u32 slice_size;
f9ff5782 EP	33	u32 req_len;
	34	enum bnxt_hwrm_ctx_flags flags;
	35	unsigned int timeout;
21380817 EP	36	u32 allocated;
21380817 EP	37	gfp_t gfp;
f9ff5782 EP	38	};
f9ff5782 EP	39
68f684e2 EP	40	enum bnxt_hwrm_wait_state {
	41	BNXT_HWRM_PENDING,
	42	BNXT_HWRM_DEFERRED,
	43	BNXT_HWRM_COMPLETE,
	44	BNXT_HWRM_CANCELLED,
	45	};
	46
	47	enum bnxt_hwrm_chnl { BNXT_HWRM_CHNL_CHIMP, BNXT_HWRM_CHNL_KONG };
	48
	49	struct 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
	57	void hwrm_update_token(struct bnxt *bp, u16 seq, enum bnxt_hwrm_wait_state s);
	58
3c8c20db EP	59	#define BNXT_HWRM_MAX_REQ_LEN (bp->hwrm_max_req_len)
3c8c20db EP	60	#define BNXT_HWRM_SHORT_REQ_LEN sizeof(struct hwrm_short_input)
f668a21c	61	#define HWRM_CMD_MAX_TIMEOUT 40000U
3c8c20db EP	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)
f9ff5782 EP	65	#define BNXT_HWRM_TARGET 0xffff
f9ff5782 EP	66	#define BNXT_HWRM_NO_CMPL_RING -1
3c8c20db	67	#define BNXT_HWRM_REQ_MAX_SIZE 128
f9ff5782 EP	68	#define BNXT_HWRM_DMA_SIZE (2 * PAGE_SIZE) /* space for req+resp */
	69	#define BNXT_HWRM_RESP_RESERVED PAGE_SIZE
	70	#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 16
	75	#define BNXT_HWRM_SENTINEL 0xb6e1f68a12e9a7eb /* arbitrary value */
3c8c20db EP	76	#define BNXT_HWRM_REQS_PER_PAGE (BNXT_PAGE_SIZE / \
	77	BNXT_HWRM_REQ_MAX_SIZE)
	78	#define HWRM_SHORT_MIN_TIMEOUT 3
	79	#define HWRM_SHORT_MAX_TIMEOUT 10
	80	#define HWRM_SHORT_TIMEOUT_COUNTER 5
	81
	82	#define HWRM_MIN_TIMEOUT 25
	83	#define HWRM_MAX_TIMEOUT 40
	84
f9ff5782 EP	85	#define HWRM_WAIT_MUST_ABORT(bp, ctx) \
f9ff5782 EP	86	(le16_to_cpu((ctx)->req->req_type) != HWRM_VER_GET && \
3c8c20db EP	87	!bnxt_is_fw_healthy(bp))
3c8c20db EP	88
f9ff5782 EP	89	static inline unsigned int hwrm_total_timeout(unsigned int n)
	90	{
	91	return n <= HWRM_SHORT_TIMEOUT_COUNTER ? n * HWRM_SHORT_MIN_TIMEOUT :
	92	HWRM_SHORT_TIMEOUT_COUNTER * HWRM_SHORT_MIN_TIMEOUT +
	93	(n - HWRM_SHORT_TIMEOUT_COUNTER) * HWRM_MIN_TIMEOUT;
	94	}
	95
3c8c20db	96
acd883e5	97	#define HWRM_VALID_BIT_DELAY_USEC 50000
3c8c20db	98
3c8c20db EP	99	static inline bool bnxt_cfa_hwrm_message(u16 req_type)
	100	{
	101	switch (req_type) {
	102	case HWRM_CFA_ENCAP_RECORD_ALLOC:
	103	case HWRM_CFA_ENCAP_RECORD_FREE:
	104	case HWRM_CFA_DECAP_FILTER_ALLOC:
	105	case HWRM_CFA_DECAP_FILTER_FREE:
	106	case HWRM_CFA_EM_FLOW_ALLOC:
	107	case HWRM_CFA_EM_FLOW_FREE:
	108	case HWRM_CFA_EM_FLOW_CFG:
	109	case HWRM_CFA_FLOW_ALLOC:
	110	case HWRM_CFA_FLOW_FREE:
	111	case HWRM_CFA_FLOW_INFO:
	112	case HWRM_CFA_FLOW_FLUSH:
	113	case HWRM_CFA_FLOW_STATS:
	114	case HWRM_CFA_METER_PROFILE_ALLOC:
	115	case HWRM_CFA_METER_PROFILE_FREE:
	116	case HWRM_CFA_METER_PROFILE_CFG:
	117	case HWRM_CFA_METER_INSTANCE_ALLOC:
	118	case HWRM_CFA_METER_INSTANCE_FREE:
	119	return true;
	120	default:
	121	return false;
	122	}
	123	}
	124
	125	static inline bool bnxt_kong_hwrm_message(struct bnxt bp, struct input req)
	126	{
	127	return (bp->fw_cap & BNXT_FW_CAP_KONG_MB_CHNL &&
	128	(bnxt_cfa_hwrm_message(le16_to_cpu(req->req_type)) \|\|
	129	le16_to_cpu(req->target_id) == HWRM_TARGET_ID_KONG));
	130	}
	131
f9ff5782 EP	132	int __hwrm_req_init(struct bnxt bp, void *req, u16 req_type, u32 req_len);
	133	#define hwrm_req_init(bp, req, req_type) \
	134	__hwrm_req_init((bp), (void *)&(req), (req_type), sizeof((req)))
	135	void hwrm_req_hold(struct bnxt bp, void *req);
	136	void hwrm_req_drop(struct bnxt bp, void req);
	137	void hwrm_req_flags(struct bnxt bp, void req, enum bnxt_hwrm_ctx_flags flags);
	138	void hwrm_req_timeout(struct bnxt bp, void req, unsigned int timeout);
	139	int hwrm_req_send(struct bnxt bp, void req);
	140	int hwrm_req_send_silent(struct bnxt bp, void req);
ecddc29d	141	int hwrm_req_replace(struct bnxt bp, void req, void *new_req, u32 len);
21380817 EP	142	void hwrm_req_alloc_flags(struct bnxt bp, void req, gfp_t flags);
21380817 EP	143	void hwrm_req_dma_slice(struct bnxt bp, void req, u32 size, dma_addr_t dma);
3c8c20db	144	#endif