937ad6570245122e9d4646fc5cdcb021dadefda8
[dpdk.git] / drivers / net / bnxt / bnxt_vnic.c
1 /*-
2  *   BSD LICENSE
3  *
4  *   Copyright(c) 2014-2015 Broadcom Corporation.
5  *   All rights reserved.
6  *
7  *   Redistribution and use in source and binary forms, with or without
8  *   modification, are permitted provided that the following conditions
9  *   are met:
10  *
11  *     * Redistributions of source code must retain the above copyright
12  *       notice, this list of conditions and the following disclaimer.
13  *     * Redistributions in binary form must reproduce the above copyright
14  *       notice, this list of conditions and the following disclaimer in
15  *       the documentation and/or other materials provided with the
16  *       distribution.
17  *     * Neither the name of Broadcom Corporation nor the names of its
18  *       contributors may be used to endorse or promote products derived
19  *       from this software without specific prior written permission.
20  *
21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33
34 #include <inttypes.h>
35
36 #include <rte_memzone.h>
37 #include <rte_malloc.h>
38
39 #include "bnxt.h"
40 #include "bnxt_vnic.h"
41 #include "hsi_struct_def_dpdk.h"
42
43 /*
44  * VNIC Functions
45  */
46
47 static void prandom_bytes(void *dest_ptr, size_t len)
48 {
49         char *dest = (char *)dest_ptr;
50         uint64_t rb;
51
52         while (len) {
53                 rb = rte_rand();
54                 if (len >= 8) {
55                         memcpy(dest, &rb, 8);
56                         len -= 8;
57                         dest += 8;
58                 } else {
59                         memcpy(dest, &rb, len);
60                         dest += len;
61                         len = 0;
62                 }
63         }
64 }
65
66 void bnxt_init_vnics(struct bnxt *bp)
67 {
68         struct bnxt_vnic_info *vnic;
69         uint16_t max_vnics;
70         int i, j;
71
72         max_vnics = bp->max_vnics;
73         STAILQ_INIT(&bp->free_vnic_list);
74         for (i = 0; i < max_vnics; i++) {
75                 vnic = &bp->vnic_info[i];
76                 vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
77                 vnic->rss_rule = (uint16_t)HWRM_NA_SIGNATURE;
78                 vnic->cos_rule = (uint16_t)HWRM_NA_SIGNATURE;
79                 vnic->lb_rule = (uint16_t)HWRM_NA_SIGNATURE;
80
81                 for (j = 0; j < MAX_QUEUES_PER_VNIC; j++)
82                         vnic->fw_grp_ids[j] = (uint16_t)HWRM_NA_SIGNATURE;
83
84                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
85                 STAILQ_INIT(&vnic->filter);
86                 STAILQ_INIT(&vnic->flow_list);
87                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
88         }
89         for (i = 0; i < MAX_FF_POOLS; i++)
90                 STAILQ_INIT(&bp->ff_pool[i]);
91 }
92
93 int bnxt_free_vnic(struct bnxt *bp, struct bnxt_vnic_info *vnic,
94                           int pool)
95 {
96         struct bnxt_vnic_info *temp;
97
98         temp = STAILQ_FIRST(&bp->ff_pool[pool]);
99         while (temp) {
100                 if (temp == vnic) {
101                         STAILQ_REMOVE(&bp->ff_pool[pool], vnic,
102                                       bnxt_vnic_info, next);
103                         vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
104                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic,
105                                            next);
106                         return 0;
107                 }
108                 temp = STAILQ_NEXT(temp, next);
109         }
110         RTE_LOG(ERR, PMD, "VNIC %p is not found in pool[%d]\n", vnic, pool);
111         return -EINVAL;
112 }
113
114 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
115 {
116         struct bnxt_vnic_info *vnic;
117
118         /* Find the 1st unused vnic from the free_vnic_list pool*/
119         vnic = STAILQ_FIRST(&bp->free_vnic_list);
120         if (!vnic) {
121                 RTE_LOG(ERR, PMD, "No more free VNIC resources\n");
122                 return NULL;
123         }
124         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
125         return vnic;
126 }
127
128 void bnxt_free_all_vnics(struct bnxt *bp)
129 {
130         struct bnxt_vnic_info *temp, *next;
131         int i;
132
133         for (i = 0; i < MAX_FF_POOLS; i++) {
134                 temp = STAILQ_FIRST(&bp->ff_pool[i]);
135                 while (temp) {
136                         next = STAILQ_NEXT(temp, next);
137                         STAILQ_REMOVE(&bp->ff_pool[i], temp, bnxt_vnic_info,
138                                       next);
139                         STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
140                         temp = next;
141                 }
142         }
143 }
144
145 void bnxt_free_vnic_attributes(struct bnxt *bp)
146 {
147         struct bnxt_vnic_info *vnic;
148
149         STAILQ_FOREACH(vnic, &bp->free_vnic_list, next) {
150                 if (vnic->rss_table) {
151                         /* 'Unreserve' the rss_table */
152                         /* N/A */
153
154                         vnic->rss_table = NULL;
155                 }
156
157                 if (vnic->rss_hash_key) {
158                         /* 'Unreserve' the rss_hash_key */
159                         /* N/A */
160
161                         vnic->rss_hash_key = NULL;
162                 }
163         }
164 }
165
166 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
167 {
168         struct bnxt_vnic_info *vnic;
169         struct rte_pci_device *pdev = bp->pdev;
170         const struct rte_memzone *mz;
171         char mz_name[RTE_MEMZONE_NAMESIZE];
172         uint32_t entry_length = RTE_CACHE_LINE_ROUNDUP(
173                                 HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table) +
174                                 HW_HASH_KEY_SIZE +
175                                 BNXT_MAX_MC_ADDRS * ETHER_ADDR_LEN);
176         uint16_t max_vnics;
177         int i;
178         phys_addr_t mz_phys_addr;
179
180         max_vnics = bp->max_vnics;
181         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
182                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
183                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
184         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
185         mz = rte_memzone_lookup(mz_name);
186         if (!mz) {
187                 mz = rte_memzone_reserve(mz_name,
188                                          entry_length * max_vnics,
189                                          SOCKET_ID_ANY,
190                                          RTE_MEMZONE_2MB |
191                                          RTE_MEMZONE_SIZE_HINT_ONLY);
192                 if (!mz)
193                         return -ENOMEM;
194         }
195         mz_phys_addr = mz->iova;
196         if ((unsigned long)mz->addr == mz_phys_addr) {
197                 RTE_LOG(WARNING, PMD,
198                         "Memzone physical address same as virtual.\n");
199                 RTE_LOG(WARNING, PMD,
200                         "Using rte_mem_virt2iova()\n");
201                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
202                 if (mz_phys_addr == 0) {
203                         RTE_LOG(ERR, PMD,
204                         "unable to map vnic address to physical memory\n");
205                         return -ENOMEM;
206                 }
207         }
208
209         for (i = 0; i < max_vnics; i++) {
210                 vnic = &bp->vnic_info[i];
211
212                 /* Allocate rss table and hash key */
213                 vnic->rss_table =
214                         (void *)((char *)mz->addr + (entry_length * i));
215                 memset(vnic->rss_table, -1, entry_length);
216
217                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
218                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
219                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table));
220
221                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
222                              HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
223                 vnic->mc_list = (void *)((char *)vnic->rss_hash_key +
224                                 HW_HASH_KEY_SIZE);
225                 vnic->mc_list_dma_addr = vnic->rss_hash_key_dma_addr +
226                                 HW_HASH_KEY_SIZE;
227         }
228
229         return 0;
230 }
231
232 void bnxt_free_vnic_mem(struct bnxt *bp)
233 {
234         struct bnxt_vnic_info *vnic;
235         uint16_t max_vnics, i;
236
237         if (bp->vnic_info == NULL)
238                 return;
239
240         max_vnics = bp->max_vnics;
241         for (i = 0; i < max_vnics; i++) {
242                 vnic = &bp->vnic_info[i];
243                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
244                         RTE_LOG(ERR, PMD, "VNIC is not freed yet!\n");
245                         /* TODO Call HWRM to free VNIC */
246                 }
247         }
248
249         rte_free(bp->vnic_info);
250         bp->vnic_info = NULL;
251 }
252
253 int bnxt_alloc_vnic_mem(struct bnxt *bp)
254 {
255         struct bnxt_vnic_info *vnic_mem;
256         uint16_t max_vnics;
257
258         max_vnics = bp->max_vnics;
259         /* Allocate memory for VNIC pool and filter pool */
260         vnic_mem = rte_zmalloc("bnxt_vnic_info",
261                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
262         if (vnic_mem == NULL) {
263                 RTE_LOG(ERR, PMD, "Failed to alloc memory for %d VNICs",
264                         max_vnics);
265                 return -ENOMEM;
266         }
267         bp->vnic_info = vnic_mem;
268         return 0;
269 }