1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm.h b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm.h
new file mode 100644
index 000000000000..83794a12cc81
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm.h
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2025 Broadcom */
+
+#ifndef _BNGE_HWRM_H_
+#define _BNGE_HWRM_H_
+
+#include <linux/bnxt/hsi.h>
+
+enum bnge_hwrm_ctx_flags {
+	BNGE_HWRM_INTERNAL_CTX_OWNED	= BIT(0),
+	BNGE_HWRM_INTERNAL_RESP_DIRTY	= BIT(1),
+	BNGE_HWRM_CTX_SILENT		= BIT(2),
+	BNGE_HWRM_FULL_WAIT		= BIT(3),
+};
+
+#define BNGE_HWRM_API_FLAGS (BNGE_HWRM_CTX_SILENT | BNGE_HWRM_FULL_WAIT)
+
+struct bnge_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 bnge_hwrm_ctx_flags flags;
+	unsigned int timeout;
+	u32 allocated;
+	gfp_t gfp;
+};
+
+enum bnge_hwrm_wait_state {
+	BNGE_HWRM_PENDING,
+	BNGE_HWRM_DEFERRED,
+	BNGE_HWRM_COMPLETE,
+	BNGE_HWRM_CANCELLED,
+};
+
+enum bnge_hwrm_chnl { BNGE_HWRM_CHNL_CHIMP, BNGE_HWRM_CHNL_KONG };
+
+struct bnge_hwrm_wait_token {
+	struct rcu_head rcu;
+	struct hlist_node node;
+	enum bnge_hwrm_wait_state state;
+	enum bnge_hwrm_chnl dst;
+	u16 seq_id;
+};
+
+#define BNGE_DFLT_HWRM_CMD_TIMEOUT		500
+
+#define BNGE_GRCPF_REG_CHIMP_COMM		0x0
+#define BNGE_GRCPF_REG_CHIMP_COMM_TRIGGER	0x100
+
+#define BNGE_HWRM_MAX_REQ_LEN		(bd->hwrm_max_req_len)
+#define BNGE_HWRM_SHORT_REQ_LEN		sizeof(struct hwrm_short_input)
+#define BNGE_HWRM_CMD_MAX_TIMEOUT	40000U
+#define BNGE_SHORT_HWRM_CMD_TIMEOUT	20
+#define BNGE_HWRM_CMD_TIMEOUT		(bd->hwrm_cmd_timeout)
+#define BNGE_HWRM_RESET_TIMEOUT		((BNGE_HWRM_CMD_TIMEOUT) * 4)
+#define BNGE_HWRM_TARGET		0xffff
+#define BNGE_HWRM_NO_CMPL_RING		-1
+#define BNGE_HWRM_REQ_MAX_SIZE		128
+#define BNGE_HWRM_DMA_SIZE		(2 * PAGE_SIZE) /* space for req+resp */
+#define BNGE_HWRM_RESP_RESERVED		PAGE_SIZE
+#define BNGE_HWRM_RESP_OFFSET		(BNGE_HWRM_DMA_SIZE -		\
+					 BNGE_HWRM_RESP_RESERVED)
+#define BNGE_HWRM_CTX_OFFSET		(BNGE_HWRM_RESP_OFFSET -	\
+					 sizeof(struct bnge_hwrm_ctx))
+#define BNGE_HWRM_DMA_ALIGN		16
+#define BNGE_HWRM_SENTINEL		0xb6e1f68a12e9a7eb /* arbitrary value */
+#define BNGE_HWRM_SHORT_MIN_TIMEOUT		3
+#define BNGE_HWRM_SHORT_MAX_TIMEOUT		10
+#define BNGE_HWRM_SHORT_TIMEOUT_COUNTER		5
+
+#define BNGE_HWRM_MIN_TIMEOUT		25
+#define BNGE_HWRM_MAX_TIMEOUT		40
+
+static inline unsigned int bnge_hwrm_timeout(unsigned int n)
+{
+	return n <= BNGE_HWRM_SHORT_TIMEOUT_COUNTER ?
+		n * BNGE_HWRM_SHORT_MIN_TIMEOUT :
+		BNGE_HWRM_SHORT_TIMEOUT_COUNTER *
+			BNGE_HWRM_SHORT_MIN_TIMEOUT +
+			(n - BNGE_HWRM_SHORT_TIMEOUT_COUNTER) *
+				BNGE_HWRM_MIN_TIMEOUT;
+}
+
+#define BNGE_HWRM_FIN_WAIT_USEC	50000
+
+void bnge_cleanup_hwrm_resources(struct bnge_dev *bd);
+int bnge_init_hwrm_resources(struct bnge_dev *bd);
+
+int bnge_hwrm_req_create(struct bnge_dev *bd, void **req, u16 req_type,
+			 u32 req_len);
+#define bnge_hwrm_req_init(bd, req, req_type) \
+	bnge_hwrm_req_create((bd), (void **)&(req), (req_type),	\
+			     sizeof(*(req)))
+void *bnge_hwrm_req_hold(struct bnge_dev *bd, void *req);
+void bnge_hwrm_req_drop(struct bnge_dev *bd, void *req);
+void bnge_hwrm_req_flags(struct bnge_dev *bd, void *req,
+			 enum bnge_hwrm_ctx_flags flags);
+void bnge_hwrm_req_timeout(struct bnge_dev *bd, void *req,
+			   unsigned int timeout);
+int bnge_hwrm_req_send(struct bnge_dev *bd, void *req);
+int bnge_hwrm_req_send_silent(struct bnge_dev *bd, void *req);
+void bnge_hwrm_req_alloc_flags(struct bnge_dev *bd, void *req, gfp_t flags);
+void *bnge_hwrm_req_dma_slice(struct bnge_dev *bd, void *req, u32 size,
+			      dma_addr_t *dma);
+#endif /* _BNGE_HWRM_H_ */