/* * Copyright (c) 2006 Chelsio, Inc. All rights reserved. * * 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 * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - 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. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef __CXIO_HAL_H__ #define __CXIO_HAL_H__ #include <linux/list.h> #include <linux/mutex.h> #include "t3_cpl.h" #include "t3cdev.h" #include "cxgb3_ctl_defs.h" #include "cxio_wr.h" #define T3_CTRL_QP_ID FW_RI_SGEEC_START #define T3_CTL_QP_TID FW_RI_TID_START #define T3_CTRL_QP_SIZE_LOG2 8 #define T3_CTRL_CQ_ID 0 /* TBD */ #define T3_MAX_NUM_RI (1<<15) #define T3_MAX_NUM_QP (1<<15) #define T3_MAX_NUM_CQ (1<<15) #define T3_MAX_NUM_PD (1<<15) #define T3_MAX_PBL_SIZE 256 #define T3_MAX_RQ_SIZE 1024 #define T3_MAX_NUM_STAG (1<<15) #define T3_STAG_UNSET 0xffffffff #define T3_MAX_DEV_NAME_LEN 32 struct cxio_hal_ctrl_qp { u32 wptr; u32 rptr; struct mutex lock; /* for the wtpr, can sleep */ wait_queue_head_t waitq;/* wait for RspQ/CQE msg */ union t3_wr *workq; /* the work request queue */ dma_addr_t dma_addr; /* pci bus address of the workq */ DECLARE_PCI_UNMAP_ADDR(mapping) void __iomem *doorbell; }; struct cxio_hal_resource { struct kfifo *tpt_fifo; spinlock_t tpt_fifo_lock; struct kfifo *qpid_fifo; spinlock_t qpid_fifo_lock; struct kfifo *cqid_fifo; spinlock_t cqid_fifo_lock; struct kfifo *pdid_fifo; spinlock_t pdid_fifo_lock; }; struct cxio_qpid_list { struct list_head entry; u32 qpid; }; struct cxio_ucontext { struct list_head qpids; struct mutex lock; }; struct cxio_rdev { char dev_name[T3_MAX_DEV_NAME_LEN]; struct t3cdev *t3cdev_p; struct rdma_info rnic_info; struct adap_ports port_info; struct cxio_hal_resource *rscp; struct cxio_hal_ctrl_qp ctrl_qp; void *ulp; unsigned long qpshift; u32 qpnr; u32 qpmask; struct cxio_ucontext uctx; struct gen_pool *pbl_pool; struct gen_pool *rqt_pool; struct list_head entry; }; static inline int cxio_num_stags(struct cxio_rdev *rdev_p) { return min((int)T3_MAX_NUM_STAG, (int)((rdev_p->rnic_info.tpt_top - rdev_p->rnic_info.tpt_base) >> 5)); } typedef void (*cxio_hal_ev_callback_func_t) (struct cxio_rdev * rdev_p, struct sk_buff * skb); #define RSPQ_CQID(rsp) (be32_to_cpu(rsp->cq_ptrid) & 0xffff) #define RSPQ_CQPTR(rsp) ((be32_to_cpu(rsp->cq_ptrid) >> 16) & 0xffff) #define RSPQ_GENBIT(rsp) ((be32_to_cpu(rsp->flags) >> 16) & 1) #define RSPQ_OVERFLOW(rsp) ((be32_to_cpu(rsp->flags) >> 17) & 1) #define RSPQ_AN(rsp) ((be32_to_cpu(rsp->flags) >> 18) & 1) #define RSPQ_SE(rsp) ((be32_to_cpu(rsp->flags) >> 19) & 1) #define RSPQ_NOTIFY(rsp) ((be32_to_cpu(rsp->flags) >> 20) & 1) #define RSPQ_CQBRANCH(rsp) ((be32_to_cpu(rsp->flags) >> 21) & 1) #define RSPQ_CREDIT_THRESH(rsp) ((be32_to_cpu(rsp->flags) >> 22) & 1) struct respQ_msg_t { __be32 flags; /* flit 0 */ __be32 cq_ptrid; __be64 rsvd; /* flit 1 */ struct t3_cqe cqe; /* flits 2-3 */ }; enum t3_cq_opcode { CQ_ARM_AN = 0x2, CQ_ARM_SE = 0x6, CQ_FORCE_AN = 0x3, CQ_CREDIT_UPDATE = 0x7 }; int cxio_rdev_open(struct cxio_rdev *rdev); void cxio_rdev_close(struct cxio_rdev *rdev); int cxio_hal_cq_op(struct cxio_rdev *rdev, struct t3_cq *cq, enum t3_cq_opcode op, u32 credit); int cxio_create_cq(struct cxio_rdev *rdev, struct t3_cq *cq); int cxio_destroy_cq(struct cxio_rdev *rdev, struct t3_cq *cq); int cxio_resize_cq(struct cxio_rdev *rdev, struct t3_cq *cq); void cxio_release_ucontext(struct cxio_rdev *rdev, struct cxio_ucontext *uctx); void cxio_init_ucontext(struct cxio_rdev *rdev, struct cxio_ucontext *uctx); int cxio_create_qp(struct cxio_rdev *rdev, u32 kernel_domain, struct t3_wq *wq, struct cxio_ucontext *uctx); int cxio_destroy_qp(struct cxio_rdev *rdev, struct t3_wq *wq, struct cxio_ucontext *uctx); int cxio_peek_cq(struct t3_wq *wr, struct t3_cq *cq, int opcode); int cxio_register_phys_mem(struct cxio_rdev *rdev, u32 * stag, u32 pdid, enum tpt_mem_perm perm, u32 zbva, u64 to, u32 len, u8 page_size, __be64 *pbl, u32 *pbl_size, u32 *pbl_addr); int cxio_reregister_phys_mem(struct cxio_rdev *rdev, u32 * stag, u32 pdid, enum tpt_mem_perm perm, u32 zbva, u64 to, u32 len, u8 page_size, __be64 *pbl, u32 *pbl_size, u32 *pbl_addr); int cxio_dereg_mem(struct cxio_rdev *rdev, u32 stag, u32 pbl_size, u32 pbl_addr); int cxio_allocate_window(struct cxio_rdev *rdev, u32 * stag, u32 pdid); int cxio_deallocate_window(struct cxio_rdev *rdev, u32 stag); int cxio_rdma_init(struct cxio_rdev *rdev, struct t3_rdma_init_attr *attr); void cxio_register_ev_cb(cxio_hal_ev_callback_func_t ev_cb); void cxio_unregister_ev_cb(cxio_hal_ev_callback_func_t ev_cb); u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp); void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid); int __init cxio_hal_init(void); void __exit cxio_hal_exit(void); void cxio_flush_rq(struct t3_wq *wq, struct t3_cq *cq, int count); void cxio_flush_sq(struct t3_wq *wq, struct t3_cq *cq, int count); void cxio_count_rcqes(struct t3_cq *cq, struct t3_wq *wq, int *count); void cxio_count_scqes(struct t3_cq *cq, struct t3_wq *wq, int *count); void cxio_flush_hw_cq(struct t3_cq *cq); int cxio_poll_cq(struct t3_wq *wq, struct t3_cq *cq, struct t3_cqe *cqe, u8 *cqe_flushed, u64 *cookie, u32 *credit); #define MOD "iw_cxgb3: " #define PDBG(fmt, args...) pr_debug(MOD fmt, ## args) #ifdef DEBUG void cxio_dump_tpt(struct cxio_rdev *rev, u32 stag); void cxio_dump_pbl(struct cxio_rdev *rev, u32 pbl_addr, uint len, u8 shift); void cxio_dump_wqe(union t3_wr *wqe); void cxio_dump_wce(struct t3_cqe *wce); void cxio_dump_rqt(struct cxio_rdev *rdev, u32 hwtid, int nents); void cxio_dump_tcb(struct cxio_rdev *rdev, u32 hwtid); #endif #endif