2 * Copyright (c) 2004, 2005 Topspin Communications. 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 * $Id: mthca_provider.c 1397 2004-12-28 05:09:00Z roland $
37 #include "mthca_dev.h"
38 #include "mthca_cmd.h"
40 static int mthca_query_device(struct ib_device *ibdev,
41 struct ib_device_attr *props)
43 struct ib_smp *in_mad = NULL;
44 struct ib_smp *out_mad = NULL;
46 struct mthca_dev* mdev = to_mdev(ibdev);
50 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
51 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
52 if (!in_mad || !out_mad)
55 memset(props, 0, sizeof props);
57 props->fw_ver = mdev->fw_ver;
59 memset(in_mad, 0, sizeof *in_mad);
60 in_mad->base_version = 1;
61 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
62 in_mad->class_version = 1;
63 in_mad->method = IB_MGMT_METHOD_GET;
64 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
66 err = mthca_MAD_IFC(mdev, 1, 1,
67 1, NULL, NULL, in_mad, out_mad,
76 props->device_cap_flags = mdev->device_cap_flags;
77 props->vendor_id = be32_to_cpup((u32 *) (out_mad->data + 36)) &
79 props->vendor_part_id = be16_to_cpup((u16 *) (out_mad->data + 30));
80 props->hw_ver = be16_to_cpup((u16 *) (out_mad->data + 32));
81 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
82 memcpy(&props->node_guid, out_mad->data + 12, 8);
84 props->max_mr_size = ~0ull;
85 props->max_qp = mdev->limits.num_qps - mdev->limits.reserved_qps;
86 props->max_qp_wr = 0xffff;
87 props->max_sge = mdev->limits.max_sg;
88 props->max_cq = mdev->limits.num_cqs - mdev->limits.reserved_cqs;
89 props->max_cqe = 0xffff;
90 props->max_mr = mdev->limits.num_mpts - mdev->limits.reserved_mrws;
91 props->max_pd = mdev->limits.num_pds - mdev->limits.reserved_pds;
92 props->max_qp_rd_atom = 1 << mdev->qp_table.rdb_shift;
93 props->max_qp_init_rd_atom = 1 << mdev->qp_table.rdb_shift;
94 props->local_ca_ack_delay = mdev->limits.local_ca_ack_delay;
103 static int mthca_query_port(struct ib_device *ibdev,
104 u8 port, struct ib_port_attr *props)
106 struct ib_smp *in_mad = NULL;
107 struct ib_smp *out_mad = NULL;
111 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
112 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
113 if (!in_mad || !out_mad)
116 memset(in_mad, 0, sizeof *in_mad);
117 in_mad->base_version = 1;
118 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
119 in_mad->class_version = 1;
120 in_mad->method = IB_MGMT_METHOD_GET;
121 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
122 in_mad->attr_mod = cpu_to_be32(port);
124 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
125 port, NULL, NULL, in_mad, out_mad,
134 props->lid = be16_to_cpup((u16 *) (out_mad->data + 16));
135 props->lmc = out_mad->data[34] & 0x7;
136 props->sm_lid = be16_to_cpup((u16 *) (out_mad->data + 18));
137 props->sm_sl = out_mad->data[36] & 0xf;
138 props->state = out_mad->data[32] & 0xf;
139 props->phys_state = out_mad->data[33] >> 4;
140 props->port_cap_flags = be32_to_cpup((u32 *) (out_mad->data + 20));
141 props->gid_tbl_len = to_mdev(ibdev)->limits.gid_table_len;
142 props->pkey_tbl_len = to_mdev(ibdev)->limits.pkey_table_len;
143 props->qkey_viol_cntr = be16_to_cpup((u16 *) (out_mad->data + 48));
144 props->active_width = out_mad->data[31] & 0xf;
145 props->active_speed = out_mad->data[35] >> 4;
153 static int mthca_modify_port(struct ib_device *ibdev,
154 u8 port, int port_modify_mask,
155 struct ib_port_modify *props)
157 struct mthca_set_ib_param set_ib;
158 struct ib_port_attr attr;
162 if (down_interruptible(&to_mdev(ibdev)->cap_mask_mutex))
165 err = mthca_query_port(ibdev, port, &attr);
169 set_ib.set_si_guid = 0;
170 set_ib.reset_qkey_viol = !!(port_modify_mask & IB_PORT_RESET_QKEY_CNTR);
172 set_ib.cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
173 ~props->clr_port_cap_mask;
175 err = mthca_SET_IB(to_mdev(ibdev), &set_ib, port, &status);
184 up(&to_mdev(ibdev)->cap_mask_mutex);
188 static int mthca_query_pkey(struct ib_device *ibdev,
189 u8 port, u16 index, u16 *pkey)
191 struct ib_smp *in_mad = NULL;
192 struct ib_smp *out_mad = NULL;
196 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
197 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
198 if (!in_mad || !out_mad)
201 memset(in_mad, 0, sizeof *in_mad);
202 in_mad->base_version = 1;
203 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
204 in_mad->class_version = 1;
205 in_mad->method = IB_MGMT_METHOD_GET;
206 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
207 in_mad->attr_mod = cpu_to_be32(index / 32);
209 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
210 port, NULL, NULL, in_mad, out_mad,
219 *pkey = be16_to_cpu(((u16 *) out_mad->data)[index % 32]);
227 static int mthca_query_gid(struct ib_device *ibdev, u8 port,
228 int index, union ib_gid *gid)
230 struct ib_smp *in_mad = NULL;
231 struct ib_smp *out_mad = NULL;
235 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
236 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
237 if (!in_mad || !out_mad)
240 memset(in_mad, 0, sizeof *in_mad);
241 in_mad->base_version = 1;
242 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
243 in_mad->class_version = 1;
244 in_mad->method = IB_MGMT_METHOD_GET;
245 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
246 in_mad->attr_mod = cpu_to_be32(port);
248 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
249 port, NULL, NULL, in_mad, out_mad,
258 memcpy(gid->raw, out_mad->data + 8, 8);
260 memset(in_mad, 0, sizeof *in_mad);
261 in_mad->base_version = 1;
262 in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
263 in_mad->class_version = 1;
264 in_mad->method = IB_MGMT_METHOD_GET;
265 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
266 in_mad->attr_mod = cpu_to_be32(index / 8);
268 err = mthca_MAD_IFC(to_mdev(ibdev), 1, 1,
269 port, NULL, NULL, in_mad, out_mad,
278 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 16, 8);
286 static struct ib_pd *mthca_alloc_pd(struct ib_device *ibdev)
291 pd = kmalloc(sizeof *pd, GFP_KERNEL);
293 return ERR_PTR(-ENOMEM);
295 err = mthca_pd_alloc(to_mdev(ibdev), pd);
304 static int mthca_dealloc_pd(struct ib_pd *pd)
306 mthca_pd_free(to_mdev(pd->device), to_mpd(pd));
312 static struct ib_ah *mthca_ah_create(struct ib_pd *pd,
313 struct ib_ah_attr *ah_attr)
318 ah = kmalloc(sizeof *ah, GFP_KERNEL);
320 return ERR_PTR(-ENOMEM);
322 err = mthca_create_ah(to_mdev(pd->device), to_mpd(pd), ah_attr, ah);
331 static int mthca_ah_destroy(struct ib_ah *ah)
333 mthca_destroy_ah(to_mdev(ah->device), to_mah(ah));
339 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
340 struct ib_qp_init_attr *init_attr)
345 switch (init_attr->qp_type) {
350 qp = kmalloc(sizeof *qp, GFP_KERNEL);
352 return ERR_PTR(-ENOMEM);
354 qp->sq.max = init_attr->cap.max_send_wr;
355 qp->rq.max = init_attr->cap.max_recv_wr;
356 qp->sq.max_gs = init_attr->cap.max_send_sge;
357 qp->rq.max_gs = init_attr->cap.max_recv_sge;
359 err = mthca_alloc_qp(to_mdev(pd->device), to_mpd(pd),
360 to_mcq(init_attr->send_cq),
361 to_mcq(init_attr->recv_cq),
362 init_attr->qp_type, init_attr->sq_sig_type,
364 qp->ibqp.qp_num = qp->qpn;
370 qp = kmalloc(sizeof (struct mthca_sqp), GFP_KERNEL);
372 return ERR_PTR(-ENOMEM);
374 qp->sq.max = init_attr->cap.max_send_wr;
375 qp->rq.max = init_attr->cap.max_recv_wr;
376 qp->sq.max_gs = init_attr->cap.max_send_sge;
377 qp->rq.max_gs = init_attr->cap.max_recv_sge;
379 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
381 err = mthca_alloc_sqp(to_mdev(pd->device), to_mpd(pd),
382 to_mcq(init_attr->send_cq),
383 to_mcq(init_attr->recv_cq),
384 init_attr->sq_sig_type,
385 qp->ibqp.qp_num, init_attr->port_num,
390 /* Don't support raw QPs */
391 return ERR_PTR(-ENOSYS);
399 init_attr->cap.max_inline_data = 0;
404 static int mthca_destroy_qp(struct ib_qp *qp)
406 mthca_free_qp(to_mdev(qp->device), to_mqp(qp));
411 static struct ib_cq *mthca_create_cq(struct ib_device *ibdev, int entries)
417 cq = kmalloc(sizeof *cq, GFP_KERNEL);
419 return ERR_PTR(-ENOMEM);
421 for (nent = 1; nent <= entries; nent <<= 1)
424 err = mthca_init_cq(to_mdev(ibdev), nent, cq);
433 static int mthca_destroy_cq(struct ib_cq *cq)
435 mthca_free_cq(to_mdev(cq->device), to_mcq(cq));
441 static inline u32 convert_access(int acc)
443 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MTHCA_MPT_FLAG_ATOMIC : 0) |
444 (acc & IB_ACCESS_REMOTE_WRITE ? MTHCA_MPT_FLAG_REMOTE_WRITE : 0) |
445 (acc & IB_ACCESS_REMOTE_READ ? MTHCA_MPT_FLAG_REMOTE_READ : 0) |
446 (acc & IB_ACCESS_LOCAL_WRITE ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0) |
447 MTHCA_MPT_FLAG_LOCAL_READ;
450 static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
455 mr = kmalloc(sizeof *mr, GFP_KERNEL);
457 return ERR_PTR(-ENOMEM);
459 err = mthca_mr_alloc_notrans(to_mdev(pd->device),
461 convert_access(acc), mr);
471 static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
472 struct ib_phys_buf *buffer_list,
486 /* First check that we have enough alignment */
487 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK))
488 return ERR_PTR(-EINVAL);
490 if (num_phys_buf > 1 &&
491 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK))
492 return ERR_PTR(-EINVAL);
496 for (i = 0; i < num_phys_buf; ++i) {
497 if (i != 0 && buffer_list[i].addr & ~PAGE_MASK)
498 return ERR_PTR(-EINVAL);
499 if (i != 0 && i != num_phys_buf - 1 &&
500 (buffer_list[i].size & ~PAGE_MASK))
501 return ERR_PTR(-EINVAL);
503 total_size += buffer_list[i].size;
505 mask |= buffer_list[i].addr;
508 /* Find largest page shift we can use to cover buffers */
509 for (shift = PAGE_SHIFT; shift < 31; ++shift)
510 if (num_phys_buf > 1) {
511 if ((1ULL << shift) & mask)
515 buffer_list[0].size +
516 (buffer_list[0].addr & ((1ULL << shift) - 1)))
520 buffer_list[0].size += buffer_list[0].addr & ((1ULL << shift) - 1);
521 buffer_list[0].addr &= ~0ull << shift;
523 mr = kmalloc(sizeof *mr, GFP_KERNEL);
525 return ERR_PTR(-ENOMEM);
528 for (i = 0; i < num_phys_buf; ++i)
529 npages += (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
534 page_list = kmalloc(npages * sizeof *page_list, GFP_KERNEL);
537 return ERR_PTR(-ENOMEM);
541 for (i = 0; i < num_phys_buf; ++i)
543 j < (buffer_list[i].size + (1ULL << shift) - 1) >> shift;
545 page_list[n++] = buffer_list[i].addr + ((u64) j << shift);
547 mthca_dbg(to_mdev(pd->device), "Registering memory at %llx (iova %llx) "
548 "in PD %x; shift %d, npages %d.\n",
549 (unsigned long long) buffer_list[0].addr,
550 (unsigned long long) *iova_start,
554 err = mthca_mr_alloc_phys(to_mdev(pd->device),
556 page_list, shift, npages,
557 *iova_start, total_size,
558 convert_access(acc), mr);
569 static int mthca_dereg_mr(struct ib_mr *mr)
571 struct mthca_mr *mmr = to_mmr(mr);
572 mthca_free_mr(to_mdev(mr->device), mmr);
577 static ssize_t show_rev(struct class_device *cdev, char *buf)
579 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
580 return sprintf(buf, "%x\n", dev->rev_id);
583 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
585 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
586 return sprintf(buf, "%x.%x.%x\n", (int) (dev->fw_ver >> 32),
587 (int) (dev->fw_ver >> 16) & 0xffff,
588 (int) dev->fw_ver & 0xffff);
591 static ssize_t show_hca(struct class_device *cdev, char *buf)
593 struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
594 switch (dev->hca_type) {
595 case TAVOR: return sprintf(buf, "MT23108\n");
596 case ARBEL_COMPAT: return sprintf(buf, "MT25208 (MT23108 compat mode)\n");
597 case ARBEL_NATIVE: return sprintf(buf, "MT25208\n");
598 default: return sprintf(buf, "unknown\n");
602 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
603 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
604 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
606 static struct class_device_attribute *mthca_class_attributes[] = {
607 &class_device_attr_hw_rev,
608 &class_device_attr_fw_ver,
609 &class_device_attr_hca_type
612 int mthca_register_device(struct mthca_dev *dev)
617 strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
618 dev->ib_dev.node_type = IB_NODE_CA;
619 dev->ib_dev.phys_port_cnt = dev->limits.num_ports;
620 dev->ib_dev.dma_device = &dev->pdev->dev;
621 dev->ib_dev.class_dev.dev = &dev->pdev->dev;
622 dev->ib_dev.query_device = mthca_query_device;
623 dev->ib_dev.query_port = mthca_query_port;
624 dev->ib_dev.modify_port = mthca_modify_port;
625 dev->ib_dev.query_pkey = mthca_query_pkey;
626 dev->ib_dev.query_gid = mthca_query_gid;
627 dev->ib_dev.alloc_pd = mthca_alloc_pd;
628 dev->ib_dev.dealloc_pd = mthca_dealloc_pd;
629 dev->ib_dev.create_ah = mthca_ah_create;
630 dev->ib_dev.destroy_ah = mthca_ah_destroy;
631 dev->ib_dev.create_qp = mthca_create_qp;
632 dev->ib_dev.modify_qp = mthca_modify_qp;
633 dev->ib_dev.destroy_qp = mthca_destroy_qp;
634 dev->ib_dev.create_cq = mthca_create_cq;
635 dev->ib_dev.destroy_cq = mthca_destroy_cq;
636 dev->ib_dev.poll_cq = mthca_poll_cq;
637 dev->ib_dev.get_dma_mr = mthca_get_dma_mr;
638 dev->ib_dev.reg_phys_mr = mthca_reg_phys_mr;
639 dev->ib_dev.dereg_mr = mthca_dereg_mr;
640 dev->ib_dev.attach_mcast = mthca_multicast_attach;
641 dev->ib_dev.detach_mcast = mthca_multicast_detach;
642 dev->ib_dev.process_mad = mthca_process_mad;
644 if (dev->hca_type == ARBEL_NATIVE) {
645 dev->ib_dev.req_notify_cq = mthca_arbel_arm_cq;
646 dev->ib_dev.post_send = mthca_arbel_post_send;
647 dev->ib_dev.post_recv = mthca_arbel_post_receive;
649 dev->ib_dev.req_notify_cq = mthca_tavor_arm_cq;
650 dev->ib_dev.post_send = mthca_tavor_post_send;
651 dev->ib_dev.post_recv = mthca_tavor_post_receive;
654 init_MUTEX(&dev->cap_mask_mutex);
656 ret = ib_register_device(&dev->ib_dev);
660 for (i = 0; i < ARRAY_SIZE(mthca_class_attributes); ++i) {
661 ret = class_device_create_file(&dev->ib_dev.class_dev,
662 mthca_class_attributes[i]);
664 ib_unregister_device(&dev->ib_dev);
672 void mthca_unregister_device(struct mthca_dev *dev)
674 ib_unregister_device(&dev->ib_dev);