+int
+otx_cpt_get_resource(void *dev, uint8_t group, struct cpt_instance **instance)
+{
+ int ret = -ENOENT, len, qlen, i;
+ int chunk_len, chunks, chunk_size;
+ struct cpt_vf *cptvf = (struct cpt_vf *)dev;
+ struct cpt_instance *cpt_instance;
+ struct command_chunk *chunk_head = NULL, *chunk_prev = NULL;
+ struct command_chunk *chunk = NULL;
+ uint8_t *mem;
+ const struct rte_memzone *rz;
+ uint64_t dma_addr = 0, alloc_len, used_len;
+ uint64_t *next_ptr;
+ uint64_t pg_sz = sysconf(_SC_PAGESIZE);
+
+ CPT_LOG_DP_DEBUG("Initializing cpt resource %s", cptvf->dev_name);
+
+ cpt_instance = &cptvf->instance;
+
+ memset(&cptvf->cqueue, 0, sizeof(cptvf->cqueue));
+ memset(&cptvf->pqueue, 0, sizeof(cptvf->pqueue));
+
+ /* Chunks are of fixed size buffers */
+ chunks = DEFAULT_CMD_QCHUNKS;
+ chunk_len = DEFAULT_CMD_QCHUNK_SIZE;
+
+ qlen = chunks * chunk_len;
+ /* Chunk size includes 8 bytes of next chunk ptr */
+ chunk_size = chunk_len * CPT_INST_SIZE + CPT_NEXT_CHUNK_PTR_SIZE;
+
+ /* For command chunk structures */
+ len = chunks * RTE_ALIGN(sizeof(struct command_chunk), 8);
+
+ /* For pending queue */
+ len += qlen * RTE_ALIGN(sizeof(struct rid), 8);
+
+ /* So that instruction queues start as pg size aligned */
+ len = RTE_ALIGN(len, pg_sz);
+
+ /* For Instruction queues */
+ len += chunks * RTE_ALIGN(chunk_size, 128);
+
+ /* Wastage after instruction queues */
+ len = RTE_ALIGN(len, pg_sz);
+
+ rz = rte_memzone_reserve_aligned(cptvf->dev_name, len, cptvf->node,
+ RTE_MEMZONE_SIZE_HINT_ONLY |
+ RTE_MEMZONE_256MB,
+ RTE_CACHE_LINE_SIZE);
+ if (!rz) {
+ ret = rte_errno;
+ goto cleanup;
+ }
+
+ mem = rz->addr;
+ dma_addr = rz->phys_addr;
+ alloc_len = len;
+
+ memset(mem, 0, len);
+
+ cpt_instance->rsvd = (uintptr_t)rz;
+
+ /* Pending queue setup */
+ cptvf->pqueue.rid_queue = (struct rid *)mem;
+ cptvf->pqueue.enq_tail = 0;
+ cptvf->pqueue.deq_head = 0;
+ cptvf->pqueue.pending_count = 0;
+
+ mem += qlen * RTE_ALIGN(sizeof(struct rid), 8);
+ len -= qlen * RTE_ALIGN(sizeof(struct rid), 8);
+ dma_addr += qlen * RTE_ALIGN(sizeof(struct rid), 8);
+
+ /* Alignment wastage */
+ used_len = alloc_len - len;
+ mem += RTE_ALIGN(used_len, pg_sz) - used_len;
+ len -= RTE_ALIGN(used_len, pg_sz) - used_len;
+ dma_addr += RTE_ALIGN(used_len, pg_sz) - used_len;
+
+ /* Init instruction queues */
+ chunk_head = &cptvf->cqueue.chead[0];
+ i = qlen;
+
+ chunk_prev = NULL;
+ for (i = 0; i < DEFAULT_CMD_QCHUNKS; i++) {
+ int csize;
+
+ chunk = &cptvf->cqueue.chead[i];
+ chunk->head = mem;
+ chunk->dma_addr = dma_addr;
+
+ csize = RTE_ALIGN(chunk_size, 128);
+ mem += csize;
+ dma_addr += csize;
+ len -= csize;
+
+ if (chunk_prev) {
+ next_ptr = (uint64_t *)(chunk_prev->head +
+ chunk_size - 8);
+ *next_ptr = (uint64_t)chunk->dma_addr;
+ }
+ chunk_prev = chunk;
+ }
+ /* Circular loop */
+ next_ptr = (uint64_t *)(chunk_prev->head + chunk_size - 8);
+ *next_ptr = (uint64_t)chunk_head->dma_addr;
+
+ assert(!len);
+
+ /* This is used for CPT(0)_PF_Q(0..15)_CTL.size config */
+ cptvf->qsize = chunk_size / 8;
+ cptvf->cqueue.qhead = chunk_head->head;
+ cptvf->cqueue.idx = 0;
+ cptvf->cqueue.cchunk = 0;
+
+ if (cpt_vq_init(cptvf, group)) {
+ CPT_LOG_ERR("Failed to initialize CPT VQ of device %s",
+ cptvf->dev_name);
+ ret = -EBUSY;
+ goto cleanup;
+ }
+
+ *instance = cpt_instance;
+
+ CPT_LOG_DP_DEBUG("Crypto device (%s) initialized", cptvf->dev_name);
+
+ return 0;
+cleanup:
+ rte_memzone_free(rz);
+ *instance = NULL;
+ return ret;
+}
+
+int
+otx_cpt_put_resource(struct cpt_instance *instance)
+{
+ struct cpt_vf *cptvf = (struct cpt_vf *)instance;
+ struct rte_memzone *rz;
+
+ if (!cptvf) {
+ CPT_LOG_ERR("Invalid CPTVF handle");
+ return -EINVAL;
+ }
+
+ CPT_LOG_DP_DEBUG("Releasing cpt device %s", cptvf->dev_name);
+
+ rz = (struct rte_memzone *)instance->rsvd;
+ rte_memzone_free(rz);
+ return 0;
+}
+
git.droids-corp.org / dpdk.git / commitdiff