bus/dpaa: register platform HW mempool on runtime
[dpdk.git] / drivers / mempool / dpaa / dpaa_mempool.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  *
3  *   Copyright 2017 NXP
4  *
5  */
6
7 /* System headers */
8 #include <stdio.h>
9 #include <inttypes.h>
10 #include <unistd.h>
11 #include <limits.h>
12 #include <sched.h>
13 #include <signal.h>
14 #include <pthread.h>
15 #include <sys/types.h>
16 #include <sys/syscall.h>
17
18 #include <rte_byteorder.h>
19 #include <rte_common.h>
20 #include <rte_log.h>
21 #include <rte_debug.h>
22 #include <rte_memory.h>
23 #include <rte_tailq.h>
24 #include <rte_eal.h>
25 #include <rte_malloc.h>
26 #include <rte_ring.h>
27
28 #include <dpaa_mempool.h>
29
30 struct dpaa_bp_info rte_dpaa_bpid_info[DPAA_MAX_BPOOLS];
31
32 static int
33 dpaa_mbuf_create_pool(struct rte_mempool *mp)
34 {
35         struct bman_pool *bp;
36         struct bm_buffer bufs[8];
37         struct dpaa_bp_info *bp_info;
38         uint8_t bpid;
39         int num_bufs = 0, ret = 0;
40         struct bman_pool_params params = {
41                 .flags = BMAN_POOL_FLAG_DYNAMIC_BPID
42         };
43
44         MEMPOOL_INIT_FUNC_TRACE();
45
46         bp = bman_new_pool(&params);
47         if (!bp) {
48                 DPAA_MEMPOOL_ERR("bman_new_pool() failed");
49                 return -ENODEV;
50         }
51         bpid = bman_get_params(bp)->bpid;
52
53         /* Drain the pool of anything already in it. */
54         do {
55                 /* Acquire is all-or-nothing, so we drain in 8s,
56                  * then in 1s for the remainder.
57                  */
58                 if (ret != 1)
59                         ret = bman_acquire(bp, bufs, 8, 0);
60                 if (ret < 8)
61                         ret = bman_acquire(bp, bufs, 1, 0);
62                 if (ret > 0)
63                         num_bufs += ret;
64         } while (ret > 0);
65         if (num_bufs)
66                 DPAA_MEMPOOL_WARN("drained %u bufs from BPID %d",
67                                   num_bufs, bpid);
68
69         rte_dpaa_bpid_info[bpid].mp = mp;
70         rte_dpaa_bpid_info[bpid].bpid = bpid;
71         rte_dpaa_bpid_info[bpid].size = mp->elt_size;
72         rte_dpaa_bpid_info[bpid].bp = bp;
73         rte_dpaa_bpid_info[bpid].meta_data_size =
74                 sizeof(struct rte_mbuf) + rte_pktmbuf_priv_size(mp);
75         rte_dpaa_bpid_info[bpid].dpaa_ops_index = mp->ops_index;
76         rte_dpaa_bpid_info[bpid].ptov_off = 0;
77         rte_dpaa_bpid_info[bpid].flags = 0;
78
79         bp_info = rte_malloc(NULL,
80                              sizeof(struct dpaa_bp_info),
81                              RTE_CACHE_LINE_SIZE);
82         if (!bp_info) {
83                 DPAA_MEMPOOL_WARN("Memory allocation failed for bp_info");
84                 bman_free_pool(bp);
85                 return -ENOMEM;
86         }
87
88         rte_memcpy(bp_info, (void *)&rte_dpaa_bpid_info[bpid],
89                    sizeof(struct dpaa_bp_info));
90         mp->pool_data = (void *)bp_info;
91
92         DPAA_MEMPOOL_INFO("BMAN pool created for bpid =%d", bpid);
93         return 0;
94 }
95
96 static void
97 dpaa_mbuf_free_pool(struct rte_mempool *mp)
98 {
99         struct dpaa_bp_info *bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
100
101         MEMPOOL_INIT_FUNC_TRACE();
102
103         if (bp_info) {
104                 bman_free_pool(bp_info->bp);
105                 DPAA_MEMPOOL_INFO("BMAN pool freed for bpid =%d",
106                                   bp_info->bpid);
107                 rte_free(mp->pool_data);
108                 mp->pool_data = NULL;
109         }
110 }
111
112 static void
113 dpaa_buf_free(struct dpaa_bp_info *bp_info, uint64_t addr)
114 {
115         struct bm_buffer buf;
116         int ret;
117
118         DPAA_MEMPOOL_DEBUG("Free 0x%lx to bpid: %d", addr, bp_info->bpid);
119
120         bm_buffer_set64(&buf, addr);
121 retry:
122         ret = bman_release(bp_info->bp, &buf, 1, 0);
123         if (ret) {
124                 DPAA_MEMPOOL_DEBUG("BMAN busy. Retrying...");
125                 cpu_spin(CPU_SPIN_BACKOFF_CYCLES);
126                 goto retry;
127         }
128 }
129
130 static int
131 dpaa_mbuf_free_bulk(struct rte_mempool *pool,
132                     void *const *obj_table,
133                     unsigned int n)
134 {
135         struct dpaa_bp_info *bp_info = DPAA_MEMPOOL_TO_POOL_INFO(pool);
136         int ret;
137         unsigned int i = 0;
138
139         DPAA_MEMPOOL_DPDEBUG("Request to free %d buffers in bpid = %d",
140                              n, bp_info->bpid);
141
142         ret = rte_dpaa_portal_init((void *)0);
143         if (ret) {
144                 DPAA_MEMPOOL_ERR("rte_dpaa_portal_init failed with ret: %d",
145                                  ret);
146                 return 0;
147         }
148
149         while (i < n) {
150                 uint64_t phy = rte_mempool_virt2iova(obj_table[i]);
151
152                 if (unlikely(!bp_info->ptov_off)) {
153                         /* buffers are not from multiple memzones */
154                         if (!(bp_info->flags & DPAA_MPOOL_MULTI_MEMZONE)) {
155                                 bp_info->ptov_off
156                                                 = (uint64_t)obj_table[i] - phy;
157                                 rte_dpaa_bpid_info[bp_info->bpid].ptov_off
158                                                 = bp_info->ptov_off;
159                         }
160                 }
161
162                 dpaa_buf_free(bp_info,
163                               (uint64_t)phy + bp_info->meta_data_size);
164                 i = i + 1;
165         }
166
167         DPAA_MEMPOOL_DPDEBUG("freed %d buffers in bpid =%d",
168                              n, bp_info->bpid);
169
170         return 0;
171 }
172
173 static int
174 dpaa_mbuf_alloc_bulk(struct rte_mempool *pool,
175                      void **obj_table,
176                      unsigned int count)
177 {
178         struct rte_mbuf **m = (struct rte_mbuf **)obj_table;
179         struct bm_buffer bufs[DPAA_MBUF_MAX_ACQ_REL];
180         struct dpaa_bp_info *bp_info;
181         void *bufaddr;
182         int i, ret;
183         unsigned int n = 0;
184
185         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(pool);
186
187         DPAA_MEMPOOL_DPDEBUG("Request to alloc %d buffers in bpid = %d",
188                              count, bp_info->bpid);
189
190         if (unlikely(count >= (RTE_MEMPOOL_CACHE_MAX_SIZE * 2))) {
191                 DPAA_MEMPOOL_ERR("Unable to allocate requested (%u) buffers",
192                                  count);
193                 return -1;
194         }
195
196         ret = rte_dpaa_portal_init((void *)0);
197         if (ret) {
198                 DPAA_MEMPOOL_ERR("rte_dpaa_portal_init failed with ret: %d",
199                                  ret);
200                 return -1;
201         }
202
203         while (n < count) {
204                 /* Acquire is all-or-nothing, so we drain in 7s,
205                  * then the remainder.
206                  */
207                 if ((count - n) > DPAA_MBUF_MAX_ACQ_REL) {
208                         ret = bman_acquire(bp_info->bp, bufs,
209                                            DPAA_MBUF_MAX_ACQ_REL, 0);
210                 } else {
211                         ret = bman_acquire(bp_info->bp, bufs, count - n, 0);
212                 }
213                 /* In case of less than requested number of buffers available
214                  * in pool, qbman_swp_acquire returns 0
215                  */
216                 if (ret <= 0) {
217                         DPAA_MEMPOOL_DPDEBUG("Buffer acquire failed (%d)",
218                                              ret);
219                         /* The API expect the exact number of requested
220                          * buffers. Releasing all buffers allocated
221                          */
222                         dpaa_mbuf_free_bulk(pool, obj_table, n);
223                         return -ENOBUFS;
224                 }
225                 /* assigning mbuf from the acquired objects */
226                 for (i = 0; (i < ret) && bufs[i].addr; i++) {
227                         /* TODO-errata - objerved that bufs may be null
228                          * i.e. first buffer is valid, remaining 6 buffers
229                          * may be null.
230                          */
231                         bufaddr = DPAA_MEMPOOL_PTOV(bp_info, bufs[i].addr);
232                         m[n] = (struct rte_mbuf *)((char *)bufaddr
233                                                 - bp_info->meta_data_size);
234                         DPAA_MEMPOOL_DPDEBUG("Paddr (%p), FD (%p) from BMAN",
235                                              (void *)bufaddr, (void *)m[n]);
236                         n++;
237                 }
238         }
239
240         DPAA_MEMPOOL_DPDEBUG("Allocated %d buffers from bpid=%d",
241                              n, bp_info->bpid);
242         return 0;
243 }
244
245 static unsigned int
246 dpaa_mbuf_get_count(const struct rte_mempool *mp)
247 {
248         struct dpaa_bp_info *bp_info;
249
250         MEMPOOL_INIT_FUNC_TRACE();
251
252         if (!mp || !mp->pool_data) {
253                 DPAA_MEMPOOL_ERR("Invalid mempool provided\n");
254                 return 0;
255         }
256
257         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
258
259         return bman_query_free_buffers(bp_info->bp);
260 }
261
262 static int
263 dpaa_register_memory_area(const struct rte_mempool *mp,
264                           char *vaddr __rte_unused,
265                           rte_iova_t paddr __rte_unused,
266                           size_t len)
267 {
268         struct dpaa_bp_info *bp_info;
269         unsigned int total_elt_sz;
270
271         MEMPOOL_INIT_FUNC_TRACE();
272
273         if (!mp || !mp->pool_data) {
274                 DPAA_MEMPOOL_ERR("Invalid mempool provided\n");
275                 return 0;
276         }
277
278         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
279         total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
280
281         DPAA_MEMPOOL_DEBUG("Req size %lu vs Available %u\n",
282                            len, total_elt_sz * mp->size);
283
284         /* Detect pool area has sufficient space for elements in this memzone */
285         if (len < total_elt_sz * mp->size)
286                 /* Else, Memory will be allocated from multiple memzones */
287                 bp_info->flags |= DPAA_MPOOL_MULTI_MEMZONE;
288
289         return 0;
290 }
291
292 struct rte_mempool_ops dpaa_mpool_ops = {
293         .name = DPAA_MEMPOOL_OPS_NAME,
294         .alloc = dpaa_mbuf_create_pool,
295         .free = dpaa_mbuf_free_pool,
296         .enqueue = dpaa_mbuf_free_bulk,
297         .dequeue = dpaa_mbuf_alloc_bulk,
298         .get_count = dpaa_mbuf_get_count,
299         .register_memory_area = dpaa_register_memory_area,
300 };
301
302 MEMPOOL_REGISTER_OPS(dpaa_mpool_ops);