2  * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
7  * 2-Clause License. This program is distributed in the hope that it
11  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
17  * The BSD 2-Clause License
23  *      - Redistributions of source code must retain the above
27  *      - Redistributions in binary form must reproduce the above
52 #include <rdma/vmw_pvrdma-abi.h>
58  * pvrdma_query_device - query device
71 	if (uhw->inlen || uhw->outlen)  in pvrdma_query_device()
72 		return -EINVAL;  in pvrdma_query_device()
74 	props->fw_ver = dev->dsr->caps.fw_ver;  in pvrdma_query_device()
75 	props->sys_image_guid = dev->dsr->caps.sys_image_guid;  in pvrdma_query_device()
76 	props->max_mr_size = dev->dsr->caps.max_mr_size;  in pvrdma_query_device()
77 	props->page_size_cap = dev->dsr->caps.page_size_cap;  in pvrdma_query_device()
78 	props->vendor_id = dev->dsr->caps.vendor_id;  in pvrdma_query_device()
79 	props->vendor_part_id = dev->pdev->device;  in pvrdma_query_device()
80 	props->hw_ver = dev->dsr->caps.hw_ver;  in pvrdma_query_device()
81 	props->max_qp = dev->dsr->caps.max_qp;  in pvrdma_query_device()
82 	props->max_qp_wr = dev->dsr->caps.max_qp_wr;  in pvrdma_query_device()
83 	props->device_cap_flags = dev->dsr->caps.device_cap_flags;  in pvrdma_query_device()
84 	props->max_send_sge = dev->dsr->caps.max_sge;  in pvrdma_query_device()
85 	props->max_recv_sge = dev->dsr->caps.max_sge;  in pvrdma_query_device()
86 	props->max_sge_rd = PVRDMA_GET_CAP(dev, dev->dsr->caps.max_sge,  in pvrdma_query_device()
87 					   dev->dsr->caps.max_sge_rd);  in pvrdma_query_device()
88 	props->max_srq = dev->dsr->caps.max_srq;  in pvrdma_query_device()
89 	props->max_srq_wr = dev->dsr->caps.max_srq_wr;  in pvrdma_query_device()
90 	props->max_srq_sge = dev->dsr->caps.max_srq_sge;  in pvrdma_query_device()
91 	props->max_cq = dev->dsr->caps.max_cq;  in pvrdma_query_device()
92 	props->max_cqe = dev->dsr->caps.max_cqe;  in pvrdma_query_device()
93 	props->max_mr = dev->dsr->caps.max_mr;  in pvrdma_query_device()
94 	props->max_pd = dev->dsr->caps.max_pd;  in pvrdma_query_device()
95 	props->max_qp_rd_atom = dev->dsr->caps.max_qp_rd_atom;  in pvrdma_query_device()
96 	props->max_qp_init_rd_atom = dev->dsr->caps.max_qp_init_rd_atom;  in pvrdma_query_device()
97 	props->atomic_cap =  in pvrdma_query_device()
98 		dev->dsr->caps.atomic_ops &  in pvrdma_query_device()
101 	props->masked_atomic_cap = props->atomic_cap;  in pvrdma_query_device()
102 	props->max_ah = dev->dsr->caps.max_ah;  in pvrdma_query_device()
103 	props->max_pkeys = dev->dsr->caps.max_pkeys;  in pvrdma_query_device()
104 	props->local_ca_ack_delay = dev->dsr->caps.local_ca_ack_delay;  in pvrdma_query_device()
105 	if ((dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_LOCAL_INV) &&  in pvrdma_query_device()
106 	    (dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_REMOTE_INV) &&  in pvrdma_query_device()
107 	    (dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_FAST_REG_WR)) {  in pvrdma_query_device()
108 		props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;  in pvrdma_query_device()
109 		props->max_fast_reg_page_list_len = PVRDMA_GET_CAP(dev,  in pvrdma_query_device()
111 				dev->dsr->caps.max_fast_reg_page_list_len);  in pvrdma_query_device()
114 	props->device_cap_flags |= IB_DEVICE_PORT_ACTIVE_EVENT |  in pvrdma_query_device()
121  * pvrdma_query_port - query device port attributes
139 	cmd->hdr.cmd = PVRDMA_CMD_QUERY_PORT;  in pvrdma_query_port()
140 	cmd->port_num = port;  in pvrdma_query_port()
144 		dev_warn(&dev->pdev->dev,  in pvrdma_query_port()
151 	props->state = pvrdma_port_state_to_ib(resp->attrs.state);  in pvrdma_query_port()
152 	props->max_mtu = pvrdma_mtu_to_ib(resp->attrs.max_mtu);  in pvrdma_query_port()
153 	props->active_mtu = pvrdma_mtu_to_ib(resp->attrs.active_mtu);  in pvrdma_query_port()
154 	props->gid_tbl_len = resp->attrs.gid_tbl_len;  in pvrdma_query_port()
155 	props->port_cap_flags =  in pvrdma_query_port()
156 		pvrdma_port_cap_flags_to_ib(resp->attrs.port_cap_flags);  in pvrdma_query_port()
157 	props->port_cap_flags |= IB_PORT_CM_SUP;  in pvrdma_query_port()
158 	props->ip_gids = true;  in pvrdma_query_port()
159 	props->max_msg_sz = resp->attrs.max_msg_sz;  in pvrdma_query_port()
160 	props->bad_pkey_cntr = resp->attrs.bad_pkey_cntr;  in pvrdma_query_port()
161 	props->qkey_viol_cntr = resp->attrs.qkey_viol_cntr;  in pvrdma_query_port()
162 	props->pkey_tbl_len = resp->attrs.pkey_tbl_len;  in pvrdma_query_port()
163 	props->lid = resp->attrs.lid;  in pvrdma_query_port()
164 	props->sm_lid = resp->attrs.sm_lid;  in pvrdma_query_port()
165 	props->lmc = resp->attrs.lmc;  in pvrdma_query_port()
166 	props->max_vl_num = resp->attrs.max_vl_num;  in pvrdma_query_port()
167 	props->sm_sl = resp->attrs.sm_sl;  in pvrdma_query_port()
168 	props->subnet_timeout = resp->attrs.subnet_timeout;  in pvrdma_query_port()
169 	props->init_type_reply = resp->attrs.init_type_reply;  in pvrdma_query_port()
170 	props->active_width = pvrdma_port_width_to_ib(resp->attrs.active_width);  in pvrdma_query_port()
171 	props->active_speed = pvrdma_port_speed_to_ib(resp->attrs.active_speed);  in pvrdma_query_port()
172 	props->phys_state = resp->attrs.phys_state;  in pvrdma_query_port()
178  * pvrdma_query_gid - query device gid
191 	if (index >= dev->dsr->caps.gid_tbl_len)  in pvrdma_query_gid()
192 		return -EINVAL;  in pvrdma_query_gid()
194 	memcpy(gid, &dev->sgid_tbl[index], sizeof(union ib_gid));  in pvrdma_query_gid()
200  * pvrdma_query_pkey - query device port's P_Key table
217 	cmd->hdr.cmd = PVRDMA_CMD_QUERY_PKEY;  in pvrdma_query_pkey()
218 	cmd->port_num = port;  in pvrdma_query_pkey()
219 	cmd->index = index;  in pvrdma_query_pkey()
224 		dev_warn(&to_vdev(ibdev)->pdev->dev,  in pvrdma_query_pkey()
241  * pvrdma_modify_port - modify device port attributes
257 		dev_warn(&vdev->pdev->dev,  in pvrdma_modify_port()
259 		return -EOPNOTSUPP;  in pvrdma_modify_port()
262 	mutex_lock(&vdev->port_mutex);  in pvrdma_modify_port()
267 	vdev->port_cap_mask |= props->set_port_cap_mask;  in pvrdma_modify_port()
268 	vdev->port_cap_mask &= ~props->clr_port_cap_mask;  in pvrdma_modify_port()
271 		vdev->ib_active = false;  in pvrdma_modify_port()
274 	mutex_unlock(&vdev->port_mutex);  in pvrdma_modify_port()
279  * pvrdma_alloc_ucontext - allocate ucontext
287 	struct ib_device *ibdev = uctx->device;  in pvrdma_alloc_ucontext()
297 	if (!vdev->ib_active)  in pvrdma_alloc_ucontext()
298 		return -EAGAIN;  in pvrdma_alloc_ucontext()
300 	context->dev = vdev;  in pvrdma_alloc_ucontext()
301 	ret = pvrdma_uar_alloc(vdev, &context->uar);  in pvrdma_alloc_ucontext()
303 		return -ENOMEM;  in pvrdma_alloc_ucontext()
306 	if (vdev->dsr_version < PVRDMA_PPN64_VERSION)  in pvrdma_alloc_ucontext()
307 		cmd->pfn = context->uar.pfn;  in pvrdma_alloc_ucontext()
309 		cmd->pfn64 = context->uar.pfn;  in pvrdma_alloc_ucontext()
311 	cmd->hdr.cmd = PVRDMA_CMD_CREATE_UC;  in pvrdma_alloc_ucontext()
314 		dev_warn(&vdev->pdev->dev,  in pvrdma_alloc_ucontext()
319 	context->ctx_handle = resp->ctx_handle;  in pvrdma_alloc_ucontext()
322 	uresp.qp_tab_size = vdev->dsr->caps.max_qp;  in pvrdma_alloc_ucontext()
325 		pvrdma_uar_free(vdev, &context->uar);  in pvrdma_alloc_ucontext()
326 		pvrdma_dealloc_ucontext(&context->ibucontext);  in pvrdma_alloc_ucontext()
327 		return -EFAULT;  in pvrdma_alloc_ucontext()
333 	pvrdma_uar_free(vdev, &context->uar);  in pvrdma_alloc_ucontext()
338  * pvrdma_dealloc_ucontext - deallocate ucontext
348 	cmd->hdr.cmd = PVRDMA_CMD_DESTROY_UC;  in pvrdma_dealloc_ucontext()
349 	cmd->ctx_handle = context->ctx_handle;  in pvrdma_dealloc_ucontext()
351 	ret = pvrdma_cmd_post(context->dev, &req, NULL, 0);  in pvrdma_dealloc_ucontext()
353 		dev_warn(&context->dev->pdev->dev,  in pvrdma_dealloc_ucontext()
357 	pvrdma_uar_free(to_vdev(ibcontext->device), &context->uar);  in pvrdma_dealloc_ucontext()
361  * pvrdma_mmap - create mmap region
370 	unsigned long start = vma->vm_start;  in pvrdma_mmap()
371 	unsigned long size = vma->vm_end - vma->vm_start;  in pvrdma_mmap()
372 	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;  in pvrdma_mmap()
374 	dev_dbg(&context->dev->pdev->dev, "create mmap region\n");  in pvrdma_mmap()
377 		dev_warn(&context->dev->pdev->dev,  in pvrdma_mmap()
379 		return -EINVAL;  in pvrdma_mmap()
384 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);  in pvrdma_mmap()
385 	if (io_remap_pfn_range(vma, start, context->uar.pfn, size,  in pvrdma_mmap()
386 			       vma->vm_page_prot))  in pvrdma_mmap()
387 		return -EAGAIN;  in pvrdma_mmap()
393  * pvrdma_alloc_pd - allocate protection domain
397  * @return: the ib_pd protection domain pointer on success, otherwise errno.
401 	struct ib_device *ibdev = ibpd->device;  in pvrdma_alloc_pd()
414 	if (!atomic_add_unless(&dev->num_pds, 1, dev->dsr->caps.max_pd))  in pvrdma_alloc_pd()
415 		return -ENOMEM;  in pvrdma_alloc_pd()
417 	cmd->hdr.cmd = PVRDMA_CMD_CREATE_PD;  in pvrdma_alloc_pd()
418 	cmd->ctx_handle = context ? context->ctx_handle : 0;  in pvrdma_alloc_pd()
421 		dev_warn(&dev->pdev->dev,  in pvrdma_alloc_pd()
422 			 "failed to allocate protection domain, error: %d\n",  in pvrdma_alloc_pd()
427 	pd->privileged = !udata;  in pvrdma_alloc_pd()
428 	pd->pd_handle = resp->pd_handle;  in pvrdma_alloc_pd()
429 	pd->pdn = resp->pd_handle;  in pvrdma_alloc_pd()
430 	pd_resp.pdn = resp->pd_handle;  in pvrdma_alloc_pd()
434 			dev_warn(&dev->pdev->dev,  in pvrdma_alloc_pd()
435 				 "failed to copy back protection domain\n");  in pvrdma_alloc_pd()
436 			pvrdma_dealloc_pd(&pd->ibpd, udata);  in pvrdma_alloc_pd()
437 			return -EFAULT;  in pvrdma_alloc_pd()
445 	atomic_dec(&dev->num_pds);  in pvrdma_alloc_pd()
450  * pvrdma_dealloc_pd - deallocate protection domain
451  * @pd: the protection domain to be released
458 	struct pvrdma_dev *dev = to_vdev(pd->device);  in pvrdma_dealloc_pd()
463 	cmd->hdr.cmd = PVRDMA_CMD_DESTROY_PD;  in pvrdma_dealloc_pd()
464 	cmd->pd_handle = to_vpd(pd)->pd_handle;  in pvrdma_dealloc_pd()
468 		dev_warn(&dev->pdev->dev,  in pvrdma_dealloc_pd()
469 			 "could not dealloc protection domain, error: %d\n",  in pvrdma_dealloc_pd()
472 	atomic_dec(&dev->num_pds);  in pvrdma_dealloc_pd()
477  * pvrdma_create_ah - create an address handle
487 	struct rdma_ah_attr *ah_attr = init_attr->ah_attr;  in pvrdma_create_ah()
488 	struct pvrdma_dev *dev = to_vdev(ibah->device);  in pvrdma_create_ah()
494 		return -EINVAL;  in pvrdma_create_ah()
497 	if ((ah_attr->type != RDMA_AH_ATTR_TYPE_ROCE)  ||  in pvrdma_create_ah()
498 	    rdma_is_multicast_addr((struct in6_addr *)grh->dgid.raw))  in pvrdma_create_ah()
499 		return -EINVAL;  in pvrdma_create_ah()
501 	if (!atomic_add_unless(&dev->num_ahs, 1, dev->dsr->caps.max_ah))  in pvrdma_create_ah()
502 		return -ENOMEM;  in pvrdma_create_ah()
504 	ah->av.port_pd = to_vpd(ibah->pd)->pd_handle | (port_num << 24);  in pvrdma_create_ah()
505 	ah->av.src_path_bits = rdma_ah_get_path_bits(ah_attr);  in pvrdma_create_ah()
506 	ah->av.src_path_bits |= 0x80;  in pvrdma_create_ah()
507 	ah->av.gid_index = grh->sgid_index;  in pvrdma_create_ah()
508 	ah->av.hop_limit = grh->hop_limit;  in pvrdma_create_ah()
509 	ah->av.sl_tclass_flowlabel = (grh->traffic_class << 20) |  in pvrdma_create_ah()
510 				      grh->flow_label;  in pvrdma_create_ah()
511 	memcpy(ah->av.dgid, grh->dgid.raw, 16);  in pvrdma_create_ah()
512 	memcpy(ah->av.dmac, ah_attr->roce.dmac, ETH_ALEN);  in pvrdma_create_ah()
518  * pvrdma_destroy_ah - destroy an address handle
525 	struct pvrdma_dev *dev = to_vdev(ah->device);  in pvrdma_destroy_ah()
527 	atomic_dec(&dev->num_ahs);  in pvrdma_destroy_ah()