From bbf19e89b87cab524a91f76a89347538a038ceae Mon Sep 17 00:00:00 2001 From: Ashwin Sekhar T K Date: Thu, 8 Apr 2021 15:20:41 +0530 Subject: [PATCH] mempool/cnxk: add generic operations Add generic CNXk mempool ops which will enqueue/dequeue from pool one element at a time. Signed-off-by: Pavan Nikhilesh Signed-off-by: Ashwin Sekhar T K --- drivers/mempool/cnxk/cnxk_mempool.h | 26 ++++ drivers/mempool/cnxk/cnxk_mempool_ops.c | 171 ++++++++++++++++++++++++ drivers/mempool/cnxk/meson.build | 3 +- 3 files changed, 199 insertions(+), 1 deletion(-) create mode 100644 drivers/mempool/cnxk/cnxk_mempool.h create mode 100644 drivers/mempool/cnxk/cnxk_mempool_ops.c diff --git a/drivers/mempool/cnxk/cnxk_mempool.h b/drivers/mempool/cnxk/cnxk_mempool.h new file mode 100644 index 0000000000..099b7f6998 --- /dev/null +++ b/drivers/mempool/cnxk/cnxk_mempool.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(C) 2021 Marvell. + */ + +#ifndef _CNXK_MEMPOOL_H_ +#define _CNXK_MEMPOOL_H_ + +#include + +unsigned int cnxk_mempool_get_count(const struct rte_mempool *mp); +ssize_t cnxk_mempool_calc_mem_size(const struct rte_mempool *mp, + uint32_t obj_num, uint32_t pg_shift, + size_t *min_chunk_size, size_t *align); +int cnxk_mempool_populate(struct rte_mempool *mp, unsigned int max_objs, + void *vaddr, rte_iova_t iova, size_t len, + rte_mempool_populate_obj_cb_t *obj_cb, + void *obj_cb_arg); +int cnxk_mempool_alloc(struct rte_mempool *mp); +void cnxk_mempool_free(struct rte_mempool *mp); + +int __rte_hot cnxk_mempool_enq(struct rte_mempool *mp, void *const *obj_table, + unsigned int n); +int __rte_hot cnxk_mempool_deq(struct rte_mempool *mp, void **obj_table, + unsigned int n); + +#endif diff --git a/drivers/mempool/cnxk/cnxk_mempool_ops.c b/drivers/mempool/cnxk/cnxk_mempool_ops.c new file mode 100644 index 0000000000..2ce1816c04 --- /dev/null +++ b/drivers/mempool/cnxk/cnxk_mempool_ops.c @@ -0,0 +1,171 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(C) 2021 Marvell. + */ + +#include + +#include "roc_api.h" +#include "cnxk_mempool.h" + +int __rte_hot +cnxk_mempool_enq(struct rte_mempool *mp, void *const *obj_table, unsigned int n) +{ + unsigned int index; + + /* Ensure mbuf init changes are written before the free pointers + * are enqueued to the stack. + */ + rte_io_wmb(); + for (index = 0; index < n; index++) + roc_npa_aura_op_free(mp->pool_id, 0, + (uint64_t)obj_table[index]); + + return 0; +} + +int __rte_hot +cnxk_mempool_deq(struct rte_mempool *mp, void **obj_table, unsigned int n) +{ + unsigned int index; + uint64_t obj; + + for (index = 0; index < n; index++, obj_table++) { + int retry = 4; + + /* Retry few times before failing */ + do { + obj = roc_npa_aura_op_alloc(mp->pool_id, 0); + } while (retry-- && (obj == 0)); + + if (obj == 0) { + cnxk_mempool_enq(mp, obj_table - index, index); + return -ENOENT; + } + *obj_table = (void *)obj; + } + + return 0; +} + +unsigned int +cnxk_mempool_get_count(const struct rte_mempool *mp) +{ + return (unsigned int)roc_npa_aura_op_available(mp->pool_id); +} + +ssize_t +cnxk_mempool_calc_mem_size(const struct rte_mempool *mp, uint32_t obj_num, + uint32_t pg_shift, size_t *min_chunk_size, + size_t *align) +{ + size_t total_elt_sz; + + /* Need space for one more obj on each chunk to fulfill + * alignment requirements. + */ + total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size; + return rte_mempool_op_calc_mem_size_helper( + mp, obj_num, pg_shift, total_elt_sz, min_chunk_size, align); +} + +int +cnxk_mempool_alloc(struct rte_mempool *mp) +{ + uint64_t aura_handle = 0; + struct npa_aura_s aura; + struct npa_pool_s pool; + uint32_t block_count; + size_t block_size; + int rc = -ERANGE; + + block_size = mp->elt_size + mp->header_size + mp->trailer_size; + block_count = mp->size; + if (mp->header_size % ROC_ALIGN != 0) { + plt_err("Header size should be multiple of %dB", ROC_ALIGN); + goto error; + } + + if (block_size % ROC_ALIGN != 0) { + plt_err("Block size should be multiple of %dB", ROC_ALIGN); + goto error; + } + + memset(&aura, 0, sizeof(struct npa_aura_s)); + memset(&pool, 0, sizeof(struct npa_pool_s)); + pool.nat_align = 1; + pool.buf_offset = mp->header_size / ROC_ALIGN; + + /* Use driver specific mp->pool_config to override aura config */ + if (mp->pool_config != NULL) + memcpy(&aura, mp->pool_config, sizeof(struct npa_aura_s)); + + rc = roc_npa_pool_create(&aura_handle, block_size, block_count, &aura, + &pool); + if (rc) { + plt_err("Failed to alloc pool or aura rc=%d", rc); + goto error; + } + + /* Store aura_handle for future queue operations */ + mp->pool_id = aura_handle; + plt_npa_dbg("block_sz=%lu block_count=%d aura_handle=0x%" PRIx64, + block_size, block_count, aura_handle); + + return 0; +error: + return rc; +} + +void +cnxk_mempool_free(struct rte_mempool *mp) +{ + int rc = 0; + + plt_npa_dbg("aura_handle=0x%" PRIx64, mp->pool_id); + rc = roc_npa_pool_destroy(mp->pool_id); + if (rc) + plt_err("Failed to free pool or aura rc=%d", rc); +} + +int +cnxk_mempool_populate(struct rte_mempool *mp, unsigned int max_objs, + void *vaddr, rte_iova_t iova, size_t len, + rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg) +{ + size_t total_elt_sz, off; + int num_elts; + + if (iova == RTE_BAD_IOVA) + return -EINVAL; + + total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size; + + /* Align object start address to a multiple of total_elt_sz */ + off = total_elt_sz - ((((uintptr_t)vaddr - 1) % total_elt_sz) + 1); + + if (len < off) + return -EINVAL; + + vaddr = (char *)vaddr + off; + iova += off; + len -= off; + num_elts = len / total_elt_sz; + + plt_npa_dbg("iova %" PRIx64 ", aligned iova %" PRIx64 "", iova - off, + iova); + plt_npa_dbg("length %" PRIu64 ", aligned length %" PRIu64 "", + (uint64_t)(len + off), (uint64_t)len); + plt_npa_dbg("element size %" PRIu64 "", (uint64_t)total_elt_sz); + plt_npa_dbg("requested objects %" PRIu64 ", possible objects %" PRIu64 + "", (uint64_t)max_objs, (uint64_t)num_elts); + + roc_npa_aura_op_range_set(mp->pool_id, iova, + iova + num_elts * total_elt_sz); + + if (roc_npa_pool_range_update_check(mp->pool_id) < 0) + return -EBUSY; + + return rte_mempool_op_populate_helper( + mp, RTE_MEMPOOL_POPULATE_F_ALIGN_OBJ, max_objs, vaddr, iova, + len, obj_cb, obj_cb_arg); +} diff --git a/drivers/mempool/cnxk/meson.build b/drivers/mempool/cnxk/meson.build index 0be0802373..52244e728b 100644 --- a/drivers/mempool/cnxk/meson.build +++ b/drivers/mempool/cnxk/meson.build @@ -8,6 +8,7 @@ if not is_linux or not dpdk_conf.get('RTE_ARCH_64') subdir_done() endif -sources = files('cnxk_mempool.c') +sources = files('cnxk_mempool.c', + 'cnxk_mempool_ops.c') deps += ['eal', 'mbuf', 'kvargs', 'bus_pci', 'common_cnxk', 'mempool'] -- 2.20.1