2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 #ifndef __CXIO_HAL_H__
33 #define __CXIO_HAL_H__
35 #include <linux/list.h>
36 #include <linux/mutex.h>
40 #include "cxgb3_ctl_defs.h"
43 #define T3_CTRL_QP_ID FW_RI_SGEEC_START
44 #define T3_CTL_QP_TID FW_RI_TID_START
45 #define T3_CTRL_QP_SIZE_LOG2 8
46 #define T3_CTRL_CQ_ID 0
49 #define T3_MAX_NUM_RI (1<<15)
50 #define T3_MAX_NUM_QP (1<<15)
51 #define T3_MAX_NUM_CQ (1<<15)
52 #define T3_MAX_NUM_PD (1<<15)
53 #define T3_MAX_PBL_SIZE 256
54 #define T3_MAX_RQ_SIZE 1024
55 #define T3_MAX_NUM_STAG (1<<15)
56 #define T3_MAX_MR_SIZE 0x100000000ULL
58 #define T3_STAG_UNSET 0xffffffff
60 #define T3_MAX_DEV_NAME_LEN 32
62 struct cxio_hal_ctrl_qp {
65 struct mutex lock; /* for the wtpr, can sleep */
66 wait_queue_head_t waitq;/* wait for RspQ/CQE msg */
67 union t3_wr *workq; /* the work request queue */
68 dma_addr_t dma_addr; /* pci bus address of the workq */
69 DECLARE_PCI_UNMAP_ADDR(mapping)
70 void __iomem *doorbell;
73 struct cxio_hal_resource {
74 struct kfifo *tpt_fifo;
75 spinlock_t tpt_fifo_lock;
76 struct kfifo *qpid_fifo;
77 spinlock_t qpid_fifo_lock;
78 struct kfifo *cqid_fifo;
79 spinlock_t cqid_fifo_lock;
80 struct kfifo *pdid_fifo;
81 spinlock_t pdid_fifo_lock;
84 struct cxio_qpid_list {
85 struct list_head entry;
89 struct cxio_ucontext {
90 struct list_head qpids;
95 char dev_name[T3_MAX_DEV_NAME_LEN];
96 struct t3cdev *t3cdev_p;
97 struct rdma_info rnic_info;
98 struct adap_ports port_info;
99 struct cxio_hal_resource *rscp;
100 struct cxio_hal_ctrl_qp ctrl_qp;
102 unsigned long qpshift;
105 struct cxio_ucontext uctx;
106 struct gen_pool *pbl_pool;
107 struct gen_pool *rqt_pool;
108 struct list_head entry;
111 static inline int cxio_num_stags(struct cxio_rdev *rdev_p)
113 return min((int)T3_MAX_NUM_STAG, (int)((rdev_p->rnic_info.tpt_top - rdev_p->rnic_info.tpt_base) >> 5));
116 typedef void (*cxio_hal_ev_callback_func_t) (struct cxio_rdev * rdev_p,
117 struct sk_buff * skb);
119 #define RSPQ_CQID(rsp) (be32_to_cpu(rsp->cq_ptrid) & 0xffff)
120 #define RSPQ_CQPTR(rsp) ((be32_to_cpu(rsp->cq_ptrid) >> 16) & 0xffff)
121 #define RSPQ_GENBIT(rsp) ((be32_to_cpu(rsp->flags) >> 16) & 1)
122 #define RSPQ_OVERFLOW(rsp) ((be32_to_cpu(rsp->flags) >> 17) & 1)
123 #define RSPQ_AN(rsp) ((be32_to_cpu(rsp->flags) >> 18) & 1)
124 #define RSPQ_SE(rsp) ((be32_to_cpu(rsp->flags) >> 19) & 1)
125 #define RSPQ_NOTIFY(rsp) ((be32_to_cpu(rsp->flags) >> 20) & 1)
126 #define RSPQ_CQBRANCH(rsp) ((be32_to_cpu(rsp->flags) >> 21) & 1)
127 #define RSPQ_CREDIT_THRESH(rsp) ((be32_to_cpu(rsp->flags) >> 22) & 1)
130 __be32 flags; /* flit 0 */
132 __be64 rsvd; /* flit 1 */
133 struct t3_cqe cqe; /* flits 2-3 */
140 CQ_CREDIT_UPDATE = 0x7
143 int cxio_rdev_open(struct cxio_rdev *rdev);
144 void cxio_rdev_close(struct cxio_rdev *rdev);
145 int cxio_hal_cq_op(struct cxio_rdev *rdev, struct t3_cq *cq,
146 enum t3_cq_opcode op, u32 credit);
147 int cxio_create_cq(struct cxio_rdev *rdev, struct t3_cq *cq);
148 int cxio_destroy_cq(struct cxio_rdev *rdev, struct t3_cq *cq);
149 int cxio_resize_cq(struct cxio_rdev *rdev, struct t3_cq *cq);
150 void cxio_release_ucontext(struct cxio_rdev *rdev, struct cxio_ucontext *uctx);
151 void cxio_init_ucontext(struct cxio_rdev *rdev, struct cxio_ucontext *uctx);
152 int cxio_create_qp(struct cxio_rdev *rdev, u32 kernel_domain, struct t3_wq *wq,
153 struct cxio_ucontext *uctx);
154 int cxio_destroy_qp(struct cxio_rdev *rdev, struct t3_wq *wq,
155 struct cxio_ucontext *uctx);
156 int cxio_peek_cq(struct t3_wq *wr, struct t3_cq *cq, int opcode);
157 int cxio_register_phys_mem(struct cxio_rdev *rdev, u32 * stag, u32 pdid,
158 enum tpt_mem_perm perm, u32 zbva, u64 to, u32 len,
159 u8 page_size, __be64 *pbl, u32 *pbl_size,
161 int cxio_reregister_phys_mem(struct cxio_rdev *rdev, u32 * stag, u32 pdid,
162 enum tpt_mem_perm perm, u32 zbva, u64 to, u32 len,
163 u8 page_size, __be64 *pbl, u32 *pbl_size,
165 int cxio_dereg_mem(struct cxio_rdev *rdev, u32 stag, u32 pbl_size,
167 int cxio_allocate_window(struct cxio_rdev *rdev, u32 * stag, u32 pdid);
168 int cxio_deallocate_window(struct cxio_rdev *rdev, u32 stag);
169 int cxio_rdma_init(struct cxio_rdev *rdev, struct t3_rdma_init_attr *attr);
170 void cxio_register_ev_cb(cxio_hal_ev_callback_func_t ev_cb);
171 void cxio_unregister_ev_cb(cxio_hal_ev_callback_func_t ev_cb);
172 u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp);
173 void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid);
174 int __init cxio_hal_init(void);
175 void __exit cxio_hal_exit(void);
176 void cxio_flush_rq(struct t3_wq *wq, struct t3_cq *cq, int count);
177 void cxio_flush_sq(struct t3_wq *wq, struct t3_cq *cq, int count);
178 void cxio_count_rcqes(struct t3_cq *cq, struct t3_wq *wq, int *count);
179 void cxio_count_scqes(struct t3_cq *cq, struct t3_wq *wq, int *count);
180 void cxio_flush_hw_cq(struct t3_cq *cq);
181 int cxio_poll_cq(struct t3_wq *wq, struct t3_cq *cq, struct t3_cqe *cqe,
182 u8 *cqe_flushed, u64 *cookie, u32 *credit);
184 #define MOD "iw_cxgb3: "
185 #define PDBG(fmt, args...) pr_debug(MOD fmt, ## args)
188 void cxio_dump_tpt(struct cxio_rdev *rev, u32 stag);
189 void cxio_dump_pbl(struct cxio_rdev *rev, u32 pbl_addr, uint len, u8 shift);
190 void cxio_dump_wqe(union t3_wr *wqe);
191 void cxio_dump_wce(struct t3_cqe *wce);
192 void cxio_dump_rqt(struct cxio_rdev *rdev, u32 hwtid, int nents);
193 void cxio_dump_tcb(struct cxio_rdev *rdev, u32 hwtid);