From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Rybchenko Subject: [RFC v2 03/17] mempool/octeontx: add callback to calculate memory size Date: Tue, 23 Jan 2018 13:15:58 +0000 Message-ID: <1516713372-10572-4-git-send-email-arybchenko@solarflare.com> References: <1511539591-20966-1-git-send-email-arybchenko@solarflare.com> <1516713372-10572-1-git-send-email-arybchenko@solarflare.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Olivier Matz , Santosh Shukla , Jerin Jacob To: Return-path: Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [148.163.129.52]) by dpdk.org (Postfix) with ESMTP id 4E65B1B017 for ; Tue, 23 Jan 2018 14:16:53 +0100 (CET) In-Reply-To: <1516713372-10572-1-git-send-email-arybchenko@solarflare.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The driver requires one and only one physically contiguous memory chunk for all objects. Signed-off-by: Andrew Rybchenko --- drivers/mempool/octeontx/rte_mempool_octeontx.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/mempool/octeontx/rte_mempool_octeontx.c b/drivers/mempool/octeontx/rte_mempool_octeontx.c index d143d05..4ec5efe 100644 --- a/drivers/mempool/octeontx/rte_mempool_octeontx.c +++ b/drivers/mempool/octeontx/rte_mempool_octeontx.c @@ -136,6 +136,30 @@ octeontx_fpavf_get_capabilities(const struct rte_mempool *mp, return 0; } +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 + * fullfil alignment requirements. + */ + mem_size = rte_mempool_calc_mem_size_def(mp, obj_num + 1, pg_shift, + min_chunk_size, align); + if (mem_size >= 0) { + /* + * The whole memory area containing the objects must be + * physically contiguous. + */ + *min_chunk_size = mem_size; + } + + return mem_size; +} + static int octeontx_fpavf_register_memory_area(const struct rte_mempool *mp, char *vaddr, rte_iova_t paddr, size_t len) @@ -159,6 +183,7 @@ static struct rte_mempool_ops octeontx_fpavf_ops = { .get_count = octeontx_fpavf_get_count, .get_capabilities = octeontx_fpavf_get_capabilities, .register_memory_area = octeontx_fpavf_register_memory_area, + .calc_mem_size = octeontx_fpavf_calc_mem_size, }; MEMPOOL_REGISTER_OPS(octeontx_fpavf_ops); -- 2.7.4