2 * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
3 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/module.h>
37 #include <linux/moduleparam.h>
38 #include <linux/pci.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/delay.h>
42 #include <linux/ethtool.h>
43 #include <linux/mii.h>
44 #include <linux/if_vlan.h>
45 #include <linux/crc32.h>
48 #include <linux/tcp.h>
49 #include <linux/init.h>
50 #include <linux/dma-mapping.h>
52 #include <linux/inet.h>
53 #include <linux/vmalloc.h>
54 #include <linux/slab.h>
56 #include <linux/route.h>
60 #include <asm/byteorder.h>
61 #include <rdma/ib_smi.h>
65 /* Device capabilities */
66 #define C2_MIN_PAGESIZE 1024
68 #define C2_MAX_MRS 32768
69 #define C2_MAX_QPS 16000
70 #define C2_MAX_WQE_SZ 256
71 #define C2_MAX_QP_WR ((128*1024)/C2_MAX_WQE_SZ)
73 #define C2_MAX_SGE_RD 1
74 #define C2_MAX_CQS 32768
75 #define C2_MAX_CQES 4096
76 #define C2_MAX_PDS 16384
79 * Send the adapter INIT message to the amso1100
81 static int c2_adapter_init(struct c2_dev *c2dev)
83 struct c2wr_init_req wr;
85 memset(&wr, 0, sizeof(wr));
86 c2_wr_set_id(&wr, CCWR_INIT);
88 wr.hint_count = cpu_to_be64(c2dev->hint_count_dma);
89 wr.q0_host_shared = cpu_to_be64(c2dev->req_vq.shared_dma);
90 wr.q1_host_shared = cpu_to_be64(c2dev->rep_vq.shared_dma);
91 wr.q1_host_msg_pool = cpu_to_be64(c2dev->rep_vq.host_dma);
92 wr.q2_host_shared = cpu_to_be64(c2dev->aeq.shared_dma);
93 wr.q2_host_msg_pool = cpu_to_be64(c2dev->aeq.host_dma);
95 /* Post the init message */
96 return vq_send_wr(c2dev, (union c2wr *) & wr);
100 * Send the adapter TERM message to the amso1100
102 static void c2_adapter_term(struct c2_dev *c2dev)
104 struct c2wr_init_req wr;
106 memset(&wr, 0, sizeof(wr));
107 c2_wr_set_id(&wr, CCWR_TERM);
110 /* Post the init message */
111 vq_send_wr(c2dev, (union c2wr *) & wr);
120 static int c2_rnic_query(struct c2_dev *c2dev, struct ib_device_attr *props)
122 struct c2_vq_req *vq_req;
123 struct c2wr_rnic_query_req wr;
124 struct c2wr_rnic_query_rep *reply;
127 vq_req = vq_req_alloc(c2dev);
131 c2_wr_set_id(&wr, CCWR_RNIC_QUERY);
132 wr.hdr.context = (unsigned long) vq_req;
133 wr.rnic_handle = c2dev->adapter_handle;
135 vq_req_get(c2dev, vq_req);
137 err = vq_send_wr(c2dev, (union c2wr *) &wr);
139 vq_req_put(c2dev, vq_req);
143 err = vq_wait_for_reply(c2dev, vq_req);
148 (struct c2wr_rnic_query_rep *) (unsigned long) (vq_req->reply_msg);
152 err = c2_errno(reply);
157 ((u64)be32_to_cpu(reply->fw_ver_major) << 32) |
158 ((be32_to_cpu(reply->fw_ver_minor) & 0xFFFF) << 16) |
159 (be32_to_cpu(reply->fw_ver_patch) & 0xFFFF);
160 memcpy(&props->sys_image_guid, c2dev->netdev->dev_addr, 6);
161 props->max_mr_size = 0xFFFFFFFF;
162 props->page_size_cap = ~(C2_MIN_PAGESIZE-1);
163 props->vendor_id = be32_to_cpu(reply->vendor_id);
164 props->vendor_part_id = be32_to_cpu(reply->part_number);
165 props->hw_ver = be32_to_cpu(reply->hw_version);
166 props->max_qp = be32_to_cpu(reply->max_qps);
167 props->max_qp_wr = be32_to_cpu(reply->max_qp_depth);
168 props->device_cap_flags = c2dev->device_cap_flags;
169 props->max_sge = C2_MAX_SGES;
170 props->max_sge_rd = C2_MAX_SGE_RD;
171 props->max_cq = be32_to_cpu(reply->max_cqs);
172 props->max_cqe = be32_to_cpu(reply->max_cq_depth);
173 props->max_mr = be32_to_cpu(reply->max_mrs);
174 props->max_pd = be32_to_cpu(reply->max_pds);
175 props->max_qp_rd_atom = be32_to_cpu(reply->max_qp_ird);
176 props->max_ee_rd_atom = 0;
177 props->max_res_rd_atom = be32_to_cpu(reply->max_global_ird);
178 props->max_qp_init_rd_atom = be32_to_cpu(reply->max_qp_ord);
179 props->max_ee_init_rd_atom = 0;
180 props->atomic_cap = IB_ATOMIC_NONE;
183 props->max_mw = be32_to_cpu(reply->max_mws);
184 props->max_raw_ipv6_qp = 0;
185 props->max_raw_ethy_qp = 0;
186 props->max_mcast_grp = 0;
187 props->max_mcast_qp_attach = 0;
188 props->max_total_mcast_qp_attach = 0;
191 props->max_map_per_fmr = 0;
193 props->max_srq_wr = 0;
194 props->max_srq_sge = 0;
195 props->max_pkeys = 0;
196 props->local_ca_ack_delay = 0;
199 vq_repbuf_free(c2dev, reply);
202 vq_req_free(c2dev, vq_req);
207 * Add an IP address to the RNIC interface
209 int c2_add_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask)
211 struct c2_vq_req *vq_req;
212 struct c2wr_rnic_setconfig_req *wr;
213 struct c2wr_rnic_setconfig_rep *reply;
214 struct c2_netaddr netaddr;
217 vq_req = vq_req_alloc(c2dev);
221 len = sizeof(struct c2_netaddr);
222 wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL);
228 c2_wr_set_id(wr, CCWR_RNIC_SETCONFIG);
229 wr->hdr.context = (unsigned long) vq_req;
230 wr->rnic_handle = c2dev->adapter_handle;
231 wr->option = cpu_to_be32(C2_CFG_ADD_ADDR);
233 netaddr.ip_addr = inaddr;
234 netaddr.netmask = inmask;
237 memcpy(wr->data, &netaddr, len);
239 vq_req_get(c2dev, vq_req);
241 err = vq_send_wr(c2dev, (union c2wr *) wr);
243 vq_req_put(c2dev, vq_req);
247 err = vq_wait_for_reply(c2dev, vq_req);
252 (struct c2wr_rnic_setconfig_rep *) (unsigned long) (vq_req->reply_msg);
258 err = c2_errno(reply);
259 vq_repbuf_free(c2dev, reply);
264 vq_req_free(c2dev, vq_req);
269 * Delete an IP address from the RNIC interface
271 int c2_del_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask)
273 struct c2_vq_req *vq_req;
274 struct c2wr_rnic_setconfig_req *wr;
275 struct c2wr_rnic_setconfig_rep *reply;
276 struct c2_netaddr netaddr;
279 vq_req = vq_req_alloc(c2dev);
283 len = sizeof(struct c2_netaddr);
284 wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL);
290 c2_wr_set_id(wr, CCWR_RNIC_SETCONFIG);
291 wr->hdr.context = (unsigned long) vq_req;
292 wr->rnic_handle = c2dev->adapter_handle;
293 wr->option = cpu_to_be32(C2_CFG_DEL_ADDR);
295 netaddr.ip_addr = inaddr;
296 netaddr.netmask = inmask;
299 memcpy(wr->data, &netaddr, len);
301 vq_req_get(c2dev, vq_req);
303 err = vq_send_wr(c2dev, (union c2wr *) wr);
305 vq_req_put(c2dev, vq_req);
309 err = vq_wait_for_reply(c2dev, vq_req);
314 (struct c2wr_rnic_setconfig_rep *) (unsigned long) (vq_req->reply_msg);
320 err = c2_errno(reply);
321 vq_repbuf_free(c2dev, reply);
326 vq_req_free(c2dev, vq_req);
331 * Open a single RNIC instance to use with all
332 * low level openib calls
334 static int c2_rnic_open(struct c2_dev *c2dev)
336 struct c2_vq_req *vq_req;
338 struct c2wr_rnic_open_rep *reply;
341 vq_req = vq_req_alloc(c2dev);
342 if (vq_req == NULL) {
346 memset(&wr, 0, sizeof(wr));
347 c2_wr_set_id(&wr, CCWR_RNIC_OPEN);
348 wr.rnic_open.req.hdr.context = (unsigned long) (vq_req);
349 wr.rnic_open.req.flags = cpu_to_be16(RNIC_PRIV_MODE);
350 wr.rnic_open.req.port_num = cpu_to_be16(0);
351 wr.rnic_open.req.user_context = (unsigned long) c2dev;
353 vq_req_get(c2dev, vq_req);
355 err = vq_send_wr(c2dev, &wr);
357 vq_req_put(c2dev, vq_req);
361 err = vq_wait_for_reply(c2dev, vq_req);
366 reply = (struct c2wr_rnic_open_rep *) (unsigned long) (vq_req->reply_msg);
372 if ((err = c2_errno(reply)) != 0) {
376 c2dev->adapter_handle = reply->rnic_handle;
379 vq_repbuf_free(c2dev, reply);
381 vq_req_free(c2dev, vq_req);
386 * Close the RNIC instance
388 static int c2_rnic_close(struct c2_dev *c2dev)
390 struct c2_vq_req *vq_req;
392 struct c2wr_rnic_close_rep *reply;
395 vq_req = vq_req_alloc(c2dev);
396 if (vq_req == NULL) {
400 memset(&wr, 0, sizeof(wr));
401 c2_wr_set_id(&wr, CCWR_RNIC_CLOSE);
402 wr.rnic_close.req.hdr.context = (unsigned long) vq_req;
403 wr.rnic_close.req.rnic_handle = c2dev->adapter_handle;
405 vq_req_get(c2dev, vq_req);
407 err = vq_send_wr(c2dev, &wr);
409 vq_req_put(c2dev, vq_req);
413 err = vq_wait_for_reply(c2dev, vq_req);
418 reply = (struct c2wr_rnic_close_rep *) (unsigned long) (vq_req->reply_msg);
424 if ((err = c2_errno(reply)) != 0) {
428 c2dev->adapter_handle = 0;
431 vq_repbuf_free(c2dev, reply);
433 vq_req_free(c2dev, vq_req);
438 * Called by c2_probe to initialize the RNIC. This principally
439 * involves initializing the various limits and resource pools that
440 * comprise the RNIC instance.
442 int c2_rnic_init(struct c2_dev *c2dev)
448 void __iomem *mmio_regs;
450 /* Device capabilities */
451 c2dev->device_cap_flags =
452 (IB_DEVICE_RESIZE_MAX_WR |
453 IB_DEVICE_CURR_QP_STATE_MOD |
454 IB_DEVICE_SYS_IMAGE_GUID |
455 IB_DEVICE_LOCAL_DMA_LKEY |
456 IB_DEVICE_MEM_WINDOW);
458 /* Allocate the qptr_array */
459 c2dev->qptr_array = vzalloc(C2_MAX_CQS * sizeof(void *));
460 if (!c2dev->qptr_array) {
464 /* Initialize the qptr_array */
465 c2dev->qptr_array[0] = (void *) &c2dev->req_vq;
466 c2dev->qptr_array[1] = (void *) &c2dev->rep_vq;
467 c2dev->qptr_array[2] = (void *) &c2dev->aeq;
469 /* Initialize data structures */
470 init_waitqueue_head(&c2dev->req_vq_wo);
471 spin_lock_init(&c2dev->vqlock);
472 spin_lock_init(&c2dev->lock);
474 /* Allocate MQ shared pointer pool for kernel clients. User
475 * mode client pools are hung off the user context
477 err = c2_init_mqsp_pool(c2dev, GFP_KERNEL, &c2dev->kern_mqsp_pool);
482 /* Allocate shared pointers for Q0, Q1, and Q2 from
483 * the shared pointer pool.
486 c2dev->hint_count = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool,
487 &c2dev->hint_count_dma,
489 c2dev->req_vq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool,
490 &c2dev->req_vq.shared_dma,
492 c2dev->rep_vq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool,
493 &c2dev->rep_vq.shared_dma,
495 c2dev->aeq.shared = c2_alloc_mqsp(c2dev, c2dev->kern_mqsp_pool,
496 &c2dev->aeq.shared_dma, GFP_KERNEL);
497 if (!c2dev->hint_count || !c2dev->req_vq.shared ||
498 !c2dev->rep_vq.shared || !c2dev->aeq.shared) {
503 mmio_regs = c2dev->kva;
504 /* Initialize the Verbs Request Queue */
505 c2_mq_req_init(&c2dev->req_vq, 0,
506 be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_QSIZE)),
507 be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_MSGSIZE)),
509 be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_POOLSTART)),
511 be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q0_SHARED)),
512 C2_MQ_ADAPTER_TARGET);
514 /* Initialize the Verbs Reply Queue */
515 qsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q1_QSIZE));
516 msgsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q1_MSGSIZE));
517 q1_pages = dma_alloc_coherent(&c2dev->pcidev->dev, qsize * msgsize,
518 &c2dev->rep_vq.host_dma, GFP_KERNEL);
523 dma_unmap_addr_set(&c2dev->rep_vq, mapping, c2dev->rep_vq.host_dma);
524 pr_debug("%s rep_vq va %p dma %llx\n", __func__, q1_pages,
525 (unsigned long long) c2dev->rep_vq.host_dma);
526 c2_mq_rep_init(&c2dev->rep_vq,
532 be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q1_SHARED)),
535 /* Initialize the Asynchronus Event Queue */
536 qsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q2_QSIZE));
537 msgsize = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q2_MSGSIZE));
538 q2_pages = dma_alloc_coherent(&c2dev->pcidev->dev, qsize * msgsize,
539 &c2dev->aeq.host_dma, GFP_KERNEL);
544 dma_unmap_addr_set(&c2dev->aeq, mapping, c2dev->aeq.host_dma);
545 pr_debug("%s aeq va %p dma %llx\n", __func__, q2_pages,
546 (unsigned long long) c2dev->aeq.host_dma);
547 c2_mq_rep_init(&c2dev->aeq,
553 be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_Q2_SHARED)),
556 /* Initialize the verbs request allocator */
557 err = vq_init(c2dev);
561 /* Enable interrupts on the adapter */
562 writel(0, c2dev->regs + C2_IDIS);
564 /* create the WR init message */
565 err = c2_adapter_init(c2dev);
570 /* open an adapter instance */
571 err = c2_rnic_open(c2dev);
575 /* Initialize cached the adapter limits */
576 err = c2_rnic_query(c2dev, &c2dev->props);
580 /* Initialize the PD pool */
581 err = c2_init_pd_table(c2dev);
585 /* Initialize the QP pool */
586 c2_init_qp_table(c2dev);
590 c2_rnic_close(c2dev);
594 dma_free_coherent(&c2dev->pcidev->dev,
595 c2dev->aeq.q_size * c2dev->aeq.msg_size,
596 q2_pages, dma_unmap_addr(&c2dev->aeq, mapping));
598 dma_free_coherent(&c2dev->pcidev->dev,
599 c2dev->rep_vq.q_size * c2dev->rep_vq.msg_size,
600 q1_pages, dma_unmap_addr(&c2dev->rep_vq, mapping));
602 c2_free_mqsp_pool(c2dev, c2dev->kern_mqsp_pool);
604 vfree(c2dev->qptr_array);
610 * Called by c2_remove to cleanup the RNIC resources.
612 void c2_rnic_term(struct c2_dev *c2dev)
615 /* Close the open adapter instance */
616 c2_rnic_close(c2dev);
618 /* Send the TERM message to the adapter */
619 c2_adapter_term(c2dev);
621 /* Disable interrupts on the adapter */
622 writel(1, c2dev->regs + C2_IDIS);
624 /* Free the QP pool */
625 c2_cleanup_qp_table(c2dev);
627 /* Free the PD pool */
628 c2_cleanup_pd_table(c2dev);
630 /* Free the verbs request allocator */
633 /* Free the asynchronus event queue */
634 dma_free_coherent(&c2dev->pcidev->dev,
635 c2dev->aeq.q_size * c2dev->aeq.msg_size,
636 c2dev->aeq.msg_pool.host,
637 dma_unmap_addr(&c2dev->aeq, mapping));
639 /* Free the verbs reply queue */
640 dma_free_coherent(&c2dev->pcidev->dev,
641 c2dev->rep_vq.q_size * c2dev->rep_vq.msg_size,
642 c2dev->rep_vq.msg_pool.host,
643 dma_unmap_addr(&c2dev->rep_vq, mapping));
645 /* Free the MQ shared pointer pool */
646 c2_free_mqsp_pool(c2dev, c2dev->kern_mqsp_pool);
648 /* Free the qptr_array */
649 vfree(c2dev->qptr_array);