drivers/infiniband/hw/bnxt_re/qplib_res.h - linux - Git at Google

 /*
  * Broadcom NetXtreme-E RoCE driver.
  *
  * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
  * Broadcom refers to Broadcom Limited and/or its subsidiaries.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
  * General Public License (GPL) Version 2, available from the file
  * COPYING in the main directory of this source tree, or the
  * BSD license below:
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Description: QPLib resource manager (header)
  */

 #ifndef __BNXT_QPLIB_RES_H__
 #define __BNXT_QPLIB_RES_H__

 extern const struct bnxt_qplib_gid bnxt_qplib_gid_zero;

 #define PTR_CNT_PER_PG		(PAGE_SIZE / sizeof(void *))
 #define PTR_MAX_IDX_PER_PG	(PTR_CNT_PER_PG - 1)
 #define PTR_PG(x)		(((x) & ~PTR_MAX_IDX_PER_PG) / PTR_CNT_PER_PG)
 #define PTR_IDX(x)		((x) & PTR_MAX_IDX_PER_PG)

 #define HWQ_CMP(idx, hwq)	((idx) & ((hwq)->max_elements - 1))

 #define HWQ_FREE_SLOTS(hwq)	(hwq->max_elements - \
 				((HWQ_CMP(hwq->prod, hwq)\
 				- HWQ_CMP(hwq->cons, hwq))\
 				& (hwq->max_elements - 1)))
 enum bnxt_qplib_hwq_type {
 	HWQ_TYPE_CTX,
 	HWQ_TYPE_QUEUE,
 	HWQ_TYPE_L2_CMPL
 };

 #define MAX_PBL_LVL_0_PGS		1
 #define MAX_PBL_LVL_1_PGS		512
 #define MAX_PBL_LVL_1_PGS_SHIFT		9
 #define MAX_PBL_LVL_1_PGS_FOR_LVL_2	256
 #define MAX_PBL_LVL_2_PGS		(256 * 512)

 enum bnxt_qplib_pbl_lvl {
 	PBL_LVL_0,
 	PBL_LVL_1,
 	PBL_LVL_2,
 	PBL_LVL_MAX
 };

 #define ROCE_PG_SIZE_4K		(4 * 1024)
 #define ROCE_PG_SIZE_8K		(8 * 1024)
 #define ROCE_PG_SIZE_64K	(64 * 1024)
 #define ROCE_PG_SIZE_2M		(2 * 1024 * 1024)
 #define ROCE_PG_SIZE_8M		(8 * 1024 * 1024)
 #define ROCE_PG_SIZE_1G		(1024 * 1024 * 1024)

 struct bnxt_qplib_pbl {
 	u32				pg_count;
 	u32				pg_size;
 	void				**pg_arr;
 	dma_addr_t			*pg_map_arr;
 };

 struct bnxt_qplib_hwq {
 	struct pci_dev			*pdev;
 	/* lock to protect qplib_hwq */
 	spinlock_t			lock;
 	struct bnxt_qplib_pbl		pbl[PBL_LVL_MAX];
 	enum bnxt_qplib_pbl_lvl		level;		/* 0, 1, or 2 */
 	/* ptr for easy access to the PBL entries */
 	void				**pbl_ptr;
 	/* ptr for easy access to the dma_addr */
 	dma_addr_t			*pbl_dma_ptr;
 	u32				max_elements;
 	u16				element_size;	/* Size of each entry */

 	u32				prod;		/* raw */
 	u32				cons;		/* raw */
 	u8				cp_bit;
 	u8				is_user;
 };

 /* Tables */
 struct bnxt_qplib_pd_tbl {
 	unsigned long			*tbl;
 	u32				max;
 };

 struct bnxt_qplib_sgid_tbl {
 	struct bnxt_qplib_gid		*tbl;
 	u16				*hw_id;
 	u16				max;
 	u16				active;
 	void				*ctx;
 	u8				*vlan;
 };

 struct bnxt_qplib_pkey_tbl {
 	u16				*tbl;
 	u16				max;
 	u16				active;
 };

 struct bnxt_qplib_dpi {
 	u32				dpi;
 	void __iomem			*dbr;
 	u64				umdbr;
 };

 struct bnxt_qplib_dpi_tbl {
 	void				**app_tbl;
 	unsigned long			*tbl;
 	u16				max;
 	void __iomem			*dbr_bar_reg_iomem;
 	u64				unmapped_dbr;
 };

 struct bnxt_qplib_stats {
 	dma_addr_t			dma_map;
 	void				*dma;
 	u32				size;
 	u32				fw_id;
 };

 struct bnxt_qplib_vf_res {
 	u32 max_qp_per_vf;
 	u32 max_mrw_per_vf;
 	u32 max_srq_per_vf;
 	u32 max_cq_per_vf;
 	u32 max_gid_per_vf;
 };

 #define BNXT_QPLIB_MAX_QP_CTX_ENTRY_SIZE	448
 #define BNXT_QPLIB_MAX_SRQ_CTX_ENTRY_SIZE	64
 #define BNXT_QPLIB_MAX_CQ_CTX_ENTRY_SIZE	64
 #define BNXT_QPLIB_MAX_MRW_CTX_ENTRY_SIZE	128

 struct bnxt_qplib_ctx {
 	u32				qpc_count;
 	struct bnxt_qplib_hwq		qpc_tbl;
 	u32				mrw_count;
 	struct bnxt_qplib_hwq		mrw_tbl;
 	u32				srqc_count;
 	struct bnxt_qplib_hwq		srqc_tbl;
 	u32				cq_count;
 	struct bnxt_qplib_hwq		cq_tbl;
 	struct bnxt_qplib_hwq		tim_tbl;
 #define MAX_TQM_ALLOC_REQ		48
 #define MAX_TQM_ALLOC_BLK_SIZE		8
 	u8				tqm_count[MAX_TQM_ALLOC_REQ];
 	struct bnxt_qplib_hwq		tqm_pde;
 	u32				tqm_pde_level;
 	struct bnxt_qplib_hwq		tqm_tbl[MAX_TQM_ALLOC_REQ];
 	struct bnxt_qplib_stats		stats;
 	struct bnxt_qplib_vf_res	vf_res;
 	u64				hwrm_intf_ver;
 };

 struct bnxt_qplib_chip_ctx {
 	u16	chip_num;
 	u8	chip_rev;
 	u8	chip_metal;
 };

 #define CHIP_NUM_57500          0x1750

 struct bnxt_qplib_res {
 	struct pci_dev			*pdev;
 	struct bnxt_qplib_chip_ctx	*cctx;
 	struct net_device		*netdev;

 	struct bnxt_qplib_rcfw		*rcfw;
 	struct bnxt_qplib_pd_tbl	pd_tbl;
 	struct bnxt_qplib_sgid_tbl	sgid_tbl;
 	struct bnxt_qplib_pkey_tbl	pkey_tbl;
 	struct bnxt_qplib_dpi_tbl	dpi_tbl;
 	bool				prio;
 };

 static inline bool bnxt_qplib_is_chip_gen_p5(struct bnxt_qplib_chip_ctx *cctx)
 {
 	return (cctx->chip_num == CHIP_NUM_57500);
 }

 static inline u8 bnxt_qplib_get_hwq_type(struct bnxt_qplib_res *res)
 {
 	return bnxt_qplib_is_chip_gen_p5(res->cctx) ?
 					HWQ_TYPE_QUEUE : HWQ_TYPE_L2_CMPL;
 }

 static inline u8 bnxt_qplib_get_ring_type(struct bnxt_qplib_chip_ctx *cctx)
 {
 	return bnxt_qplib_is_chip_gen_p5(cctx) ?
 	       RING_ALLOC_REQ_RING_TYPE_NQ :
 	       RING_ALLOC_REQ_RING_TYPE_ROCE_CMPL;
 }

 struct bnxt_qplib_sg_info {
 	struct scatterlist		*sglist;
 	u32				nmap;
 	u32				npages;
 };

 #define to_bnxt_qplib(ptr, type, member)	\
 	container_of(ptr, type, member)

 struct bnxt_qplib_pd;
 struct bnxt_qplib_dev_attr;

 void bnxt_qplib_free_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq);
 int bnxt_qplib_alloc_init_hwq(struct pci_dev *pdev, struct bnxt_qplib_hwq *hwq,
 			      struct bnxt_qplib_sg_info *sg_info, u32 *elements,
 			      u32 elements_per_page, u32 aux, u32 pg_size,
 			      enum bnxt_qplib_hwq_type hwq_type);
 void bnxt_qplib_get_guid(u8 *dev_addr, u8 *guid);
 int bnxt_qplib_alloc_pd(struct bnxt_qplib_pd_tbl *pd_tbl,
 			struct bnxt_qplib_pd *pd);
 int bnxt_qplib_dealloc_pd(struct bnxt_qplib_res *res,
 			  struct bnxt_qplib_pd_tbl *pd_tbl,
 			  struct bnxt_qplib_pd *pd);
 int bnxt_qplib_alloc_dpi(struct bnxt_qplib_dpi_tbl *dpit,
 			 struct bnxt_qplib_dpi     *dpi,
 			 void                      *app);
 int bnxt_qplib_dealloc_dpi(struct bnxt_qplib_res *res,
 			   struct bnxt_qplib_dpi_tbl *dpi_tbl,
 			   struct bnxt_qplib_dpi *dpi);
 void bnxt_qplib_cleanup_res(struct bnxt_qplib_res *res);
 int bnxt_qplib_init_res(struct bnxt_qplib_res *res);
 void bnxt_qplib_free_res(struct bnxt_qplib_res *res);
 int bnxt_qplib_alloc_res(struct bnxt_qplib_res *res, struct pci_dev *pdev,
 			 struct net_device *netdev,
 			 struct bnxt_qplib_dev_attr *dev_attr);
 void bnxt_qplib_free_ctx(struct pci_dev *pdev,
 			 struct bnxt_qplib_ctx *ctx);
 int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
 			 struct bnxt_qplib_ctx *ctx,
 			 bool virt_fn, bool is_p5);
 #endif /* __BNXT_QPLIB_RES_H__ */
	/*
	* Broadcom NetXtreme-E RoCE driver.
	*
	* Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
	* Broadcom refers to Broadcom Limited and/or its subsidiaries.
	*
	* This software is available to you under a choice of one of two
	* licenses. You may choose to be licensed under the terms of the GNU
	* General Public License (GPL) Version 2, available from the file
	* COPYING in the main directory of this source tree, or the
	* BSD license below:
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in
	* the documentation and/or other materials provided with the
	* distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
	* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
	* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* Description: QPLib resource manager (header)
	*/

	#ifndef __BNXT_QPLIB_RES_H__
	#define __BNXT_QPLIB_RES_H__

	extern const struct bnxt_qplib_gid bnxt_qplib_gid_zero;

	#define PTR_CNT_PER_PG (PAGE_SIZE / sizeof(void *))
	#define PTR_MAX_IDX_PER_PG (PTR_CNT_PER_PG - 1)
	#define PTR_PG(x) (((x) & ~PTR_MAX_IDX_PER_PG) / PTR_CNT_PER_PG)
	#define PTR_IDX(x) ((x) & PTR_MAX_IDX_PER_PG)

	#define HWQ_CMP(idx, hwq) ((idx) & ((hwq)->max_elements - 1))

	#define HWQ_FREE_SLOTS(hwq) (hwq->max_elements - \
	((HWQ_CMP(hwq->prod, hwq)\
	- HWQ_CMP(hwq->cons, hwq))\
	& (hwq->max_elements - 1)))
	enum bnxt_qplib_hwq_type {
	HWQ_TYPE_CTX,
	HWQ_TYPE_QUEUE,
	HWQ_TYPE_L2_CMPL
	};

	#define MAX_PBL_LVL_0_PGS 1
	#define MAX_PBL_LVL_1_PGS 512
	#define MAX_PBL_LVL_1_PGS_SHIFT 9
	#define MAX_PBL_LVL_1_PGS_FOR_LVL_2 256
	#define MAX_PBL_LVL_2_PGS (256 * 512)

	enum bnxt_qplib_pbl_lvl {
	PBL_LVL_0,
	PBL_LVL_1,
	PBL_LVL_2,
	PBL_LVL_MAX
	};

	#define ROCE_PG_SIZE_4K (4 * 1024)
	#define ROCE_PG_SIZE_8K (8 * 1024)
	#define ROCE_PG_SIZE_64K (64 * 1024)
	#define ROCE_PG_SIZE_2M (2 * 1024 * 1024)
	#define ROCE_PG_SIZE_8M (8 * 1024 * 1024)
	#define ROCE_PG_SIZE_1G (1024 * 1024 * 1024)

	struct bnxt_qplib_pbl {
	u32 pg_count;
	u32 pg_size;
	void **pg_arr;
	dma_addr_t *pg_map_arr;
	};

	struct bnxt_qplib_hwq {
	struct pci_dev *pdev;
	/* lock to protect qplib_hwq */
	spinlock_t lock;
	struct bnxt_qplib_pbl pbl[PBL_LVL_MAX];
	enum bnxt_qplib_pbl_lvl level; /* 0, 1, or 2 */
	/* ptr for easy access to the PBL entries */
	void **pbl_ptr;
	/* ptr for easy access to the dma_addr */
	dma_addr_t *pbl_dma_ptr;
	u32 max_elements;
	u16 element_size; /* Size of each entry */

	u32 prod; /* raw */
	u32 cons; /* raw */
	u8 cp_bit;
	u8 is_user;
	};

	/* Tables */
	struct bnxt_qplib_pd_tbl {
	unsigned long *tbl;
	u32 max;
	};

	struct bnxt_qplib_sgid_tbl {
	struct bnxt_qplib_gid *tbl;
	u16 *hw_id;
	u16 max;
	u16 active;
	void *ctx;
	u8 *vlan;
	};

	struct bnxt_qplib_pkey_tbl {
	u16 *tbl;
	u16 max;
	u16 active;
	};

	struct bnxt_qplib_dpi {
	u32 dpi;
	void __iomem *dbr;
	u64 umdbr;
	};

	struct bnxt_qplib_dpi_tbl {
	void **app_tbl;
	unsigned long *tbl;
	u16 max;
	void __iomem *dbr_bar_reg_iomem;
	u64 unmapped_dbr;
	};

	struct bnxt_qplib_stats {
	dma_addr_t dma_map;
	void *dma;
	u32 size;
	u32 fw_id;
	};

	struct bnxt_qplib_vf_res {
	u32 max_qp_per_vf;
	u32 max_mrw_per_vf;
	u32 max_srq_per_vf;
	u32 max_cq_per_vf;
	u32 max_gid_per_vf;
	};

	#define BNXT_QPLIB_MAX_QP_CTX_ENTRY_SIZE 448
	#define BNXT_QPLIB_MAX_SRQ_CTX_ENTRY_SIZE 64
	#define BNXT_QPLIB_MAX_CQ_CTX_ENTRY_SIZE 64
	#define BNXT_QPLIB_MAX_MRW_CTX_ENTRY_SIZE 128

	struct bnxt_qplib_ctx {
	u32 qpc_count;
	struct bnxt_qplib_hwq qpc_tbl;
	u32 mrw_count;
	struct bnxt_qplib_hwq mrw_tbl;
	u32 srqc_count;
	struct bnxt_qplib_hwq srqc_tbl;
	u32 cq_count;
	struct bnxt_qplib_hwq cq_tbl;
	struct bnxt_qplib_hwq tim_tbl;
	#define MAX_TQM_ALLOC_REQ 48
	#define MAX_TQM_ALLOC_BLK_SIZE 8
	u8 tqm_count[MAX_TQM_ALLOC_REQ];
	struct bnxt_qplib_hwq tqm_pde;
	u32 tqm_pde_level;
	struct bnxt_qplib_hwq tqm_tbl[MAX_TQM_ALLOC_REQ];
	struct bnxt_qplib_stats stats;
	struct bnxt_qplib_vf_res vf_res;
	u64 hwrm_intf_ver;
	};

	struct bnxt_qplib_chip_ctx {
	u16 chip_num;
	u8 chip_rev;
	u8 chip_metal;
	};

	#define CHIP_NUM_57500 0x1750

	struct bnxt_qplib_res {
	struct pci_dev *pdev;
	struct bnxt_qplib_chip_ctx *cctx;
	struct net_device *netdev;

	struct bnxt_qplib_rcfw *rcfw;
	struct bnxt_qplib_pd_tbl pd_tbl;
	struct bnxt_qplib_sgid_tbl sgid_tbl;
	struct bnxt_qplib_pkey_tbl pkey_tbl;
	struct bnxt_qplib_dpi_tbl dpi_tbl;
	bool prio;
	};

	static inline bool bnxt_qplib_is_chip_gen_p5(struct bnxt_qplib_chip_ctx *cctx)
	{
	return (cctx->chip_num == CHIP_NUM_57500);
	}

	static inline u8 bnxt_qplib_get_hwq_type(struct bnxt_qplib_res *res)
	{
	return bnxt_qplib_is_chip_gen_p5(res->cctx) ?
	HWQ_TYPE_QUEUE : HWQ_TYPE_L2_CMPL;
	}

	static inline u8 bnxt_qplib_get_ring_type(struct bnxt_qplib_chip_ctx *cctx)
	{
	return bnxt_qplib_is_chip_gen_p5(cctx) ?
	RING_ALLOC_REQ_RING_TYPE_NQ :
	RING_ALLOC_REQ_RING_TYPE_ROCE_CMPL;
	}

	struct bnxt_qplib_sg_info {
	struct scatterlist *sglist;
	u32 nmap;
	u32 npages;
	};

	#define to_bnxt_qplib(ptr, type, member) \
	container_of(ptr, type, member)

	struct bnxt_qplib_pd;
	struct bnxt_qplib_dev_attr;

	void bnxt_qplib_free_hwq(struct pci_dev pdev, struct bnxt_qplib_hwq hwq);
	int bnxt_qplib_alloc_init_hwq(struct pci_dev pdev, struct bnxt_qplib_hwq hwq,
	struct bnxt_qplib_sg_info sg_info, u32 elements,
	u32 elements_per_page, u32 aux, u32 pg_size,
	enum bnxt_qplib_hwq_type hwq_type);
	void bnxt_qplib_get_guid(u8 dev_addr, u8 guid);
	int bnxt_qplib_alloc_pd(struct bnxt_qplib_pd_tbl *pd_tbl,
	struct bnxt_qplib_pd *pd);
	int bnxt_qplib_dealloc_pd(struct bnxt_qplib_res *res,
	struct bnxt_qplib_pd_tbl *pd_tbl,
	struct bnxt_qplib_pd *pd);
	int bnxt_qplib_alloc_dpi(struct bnxt_qplib_dpi_tbl *dpit,
	struct bnxt_qplib_dpi *dpi,
	void *app);
	int bnxt_qplib_dealloc_dpi(struct bnxt_qplib_res *res,
	struct bnxt_qplib_dpi_tbl *dpi_tbl,
	struct bnxt_qplib_dpi *dpi);
	void bnxt_qplib_cleanup_res(struct bnxt_qplib_res *res);
	int bnxt_qplib_init_res(struct bnxt_qplib_res *res);
	void bnxt_qplib_free_res(struct bnxt_qplib_res *res);
	int bnxt_qplib_alloc_res(struct bnxt_qplib_res res, struct pci_dev pdev,
	struct net_device *netdev,
	struct bnxt_qplib_dev_attr *dev_attr);
	void bnxt_qplib_free_ctx(struct pci_dev *pdev,
	struct bnxt_qplib_ctx *ctx);
	int bnxt_qplib_alloc_ctx(struct pci_dev *pdev,
	struct bnxt_qplib_ctx *ctx,
	bool virt_fn, bool is_p5);
	#endif /* __BNXT_QPLIB_RES_H__ */