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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017 Cavium, Inc
*/
#include <stdio.h>
#include <rte_mempool.h>
#include <rte_malloc.h>
#include <rte_mbuf.h>
#include "octeontx_fpavf.h"
static int
octeontx_fpavf_alloc(struct rte_mempool *mp)
{
uintptr_t pool;
uint32_t memseg_count = mp->size;
uint32_t object_size;
int rc = 0;
object_size = mp->elt_size + mp->header_size + mp->trailer_size;
pool = octeontx_fpa_bufpool_create(object_size, memseg_count,
OCTEONTX_FPAVF_BUF_OFFSET,
mp->socket_id);
rc = octeontx_fpa_bufpool_block_size(pool);
if (rc < 0)
goto _end;
if ((uint32_t)rc != object_size)
fpavf_log_err("buffer size mismatch: %d instead of %u\n",
rc, object_size);
fpavf_log_info("Pool created %p with .. ", (void *)pool);
fpavf_log_info("obj_sz %d, cnt %d\n", object_size, memseg_count);
/* assign pool handle to mempool */
mp->pool_id = (uint64_t)pool;
return 0;
_end:
return rc;
}
static void
octeontx_fpavf_free(struct rte_mempool *mp)
{
uintptr_t pool;
pool = (uintptr_t)mp->pool_id;
octeontx_fpa_bufpool_destroy(pool, mp->socket_id);
}
static __rte_always_inline void *
octeontx_fpa_bufpool_alloc(uintptr_t handle)
{
return (void *)(uintptr_t)fpavf_read64((void *)(handle +
FPA_VF_VHAURA_OP_ALLOC(0)));
}
static __rte_always_inline void
octeontx_fpa_bufpool_free(uintptr_t handle, void *buf)
{
uint64_t free_addr = FPA_VF_FREE_ADDRS_S(FPA_VF_VHAURA_OP_FREE(0),
0 /* DWB */, 1 /* FABS */);
fpavf_write64((uintptr_t)buf, (void *)(uintptr_t)(handle + free_addr));
}
static int
octeontx_fpavf_enqueue(struct rte_mempool *mp, void * const *obj_table,
unsigned int n)
{
uintptr_t pool;
unsigned int index;
pool = (uintptr_t)mp->pool_id;
/* Get pool bar address from handle */
pool &= ~(uint64_t)FPA_GPOOL_MASK;
for (index = 0; index < n; index++, obj_table++)
octeontx_fpa_bufpool_free(pool, *obj_table);
return 0;
}
static int
octeontx_fpavf_dequeue(struct rte_mempool *mp, void **obj_table,
unsigned int n)
{
unsigned int index;
uintptr_t pool;
void *obj;
pool = (uintptr_t)mp->pool_id;
/* Get pool bar address from handle */
pool &= ~(uint64_t)FPA_GPOOL_MASK;
for (index = 0; index < n; index++, obj_table++) {
obj = octeontx_fpa_bufpool_alloc(pool);
if (obj == NULL) {
/*
* Failed to allocate the requested number of objects
* from the pool. Current pool implementation requires
* completing the entire request or returning error
* otherwise.
* Free already allocated buffers to the pool.
*/
for (; index > 0; index--) {
obj_table--;
octeontx_fpa_bufpool_free(pool, *obj_table);
}
return -ENOMEM;
}
*obj_table = obj;
}
return 0;
}
static unsigned int
octeontx_fpavf_get_count(const struct rte_mempool *mp)
{
uintptr_t pool;
pool = (uintptr_t)mp->pool_id;
return octeontx_fpa_bufpool_free_count(pool);
}
static ssize_t
octeontx_fpavf_calc_mem_size(const struct rte_mempool *mp,
uint32_t obj_num, uint32_t pg_shift,
size_t *min_chunk_size, size_t *align)
{
ssize_t mem_size;
/*
* Simply need space for one more object to be able to
* fulfil alignment requirements.
*/
mem_size = rte_mempool_op_calc_mem_size_default(mp, obj_num + 1,
pg_shift,
min_chunk_size, align);
if (mem_size >= 0) {
/*
* Memory area which contains objects must be physically
* contiguous.
*/
*min_chunk_size = mem_size;
}
return mem_size;
}
static int
octeontx_fpavf_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;
size_t off;
uint8_t gpool;
uintptr_t pool_bar;
int ret;
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 % total_elt_sz);
if (len < off)
return -EINVAL;
vaddr = (char *)vaddr + off;
iova += off;
len -= off;
gpool = octeontx_fpa_bufpool_gpool(mp->pool_id);
pool_bar = mp->pool_id & ~(uint64_t)FPA_GPOOL_MASK;
ret = octeontx_fpavf_pool_set_range(pool_bar, len, vaddr, gpool);
if (ret < 0)
return ret;
return rte_mempool_op_populate_default(mp, max_objs, vaddr, iova, len,
obj_cb, obj_cb_arg);
}
static struct rte_mempool_ops octeontx_fpavf_ops = {
.name = "octeontx_fpavf",
.alloc = octeontx_fpavf_alloc,
.free = octeontx_fpavf_free,
.enqueue = octeontx_fpavf_enqueue,
.dequeue = octeontx_fpavf_dequeue,
.get_count = octeontx_fpavf_get_count,
.calc_mem_size = octeontx_fpavf_calc_mem_size,
.populate = octeontx_fpavf_populate,
};
MEMPOOL_REGISTER_OPS(octeontx_fpavf_ops);
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