From 9a8e7062c81c3ce855e27b06e1d849e087ddfa79 Mon Sep 17 00:00:00 2001 From: Jerin Jacob Date: Sat, 22 Jun 2019 18:54:16 +0530 Subject: [PATCH] mempool/octeontx2: add devargs for max pool selection The maximum number of mempools per application needs to be configured on HW during mempool driver initialization. HW can support up to 1M mempools, Since each mempool costs set of HW resources, the max_pools devargs parameter is being introduced to configure the number of mempools required for the application. For example: -w 0002:02:00.0,max_pools=512 With the above configuration, the driver will set up only 512 mempools for the given application to save HW resources. Signed-off-by: Jerin Jacob Signed-off-by: Harman Kalra --- drivers/mempool/octeontx2/otx2_mempool.c | 41 +++++++++++++++++++++++- 1 file changed, 40 insertions(+), 1 deletion(-) diff --git a/drivers/mempool/octeontx2/otx2_mempool.c b/drivers/mempool/octeontx2/otx2_mempool.c index c47f95fb03..9a5f11cf49 100644 --- a/drivers/mempool/octeontx2/otx2_mempool.c +++ b/drivers/mempool/octeontx2/otx2_mempool.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -159,6 +160,42 @@ otx2_aura_size_to_u32(uint8_t val) return 1 << (val + 6); } +static int +parse_max_pools(const char *key, const char *value, void *extra_args) +{ + RTE_SET_USED(key); + uint32_t val; + + val = atoi(value); + if (val < otx2_aura_size_to_u32(NPA_AURA_SZ_128)) + val = 128; + if (val > otx2_aura_size_to_u32(NPA_AURA_SZ_1M)) + val = BIT_ULL(20); + + *(uint8_t *)extra_args = rte_log2_u32(val) - 6; + return 0; +} + +#define OTX2_MAX_POOLS "max_pools" + +static uint8_t +otx2_parse_aura_size(struct rte_devargs *devargs) +{ + uint8_t aura_sz = NPA_AURA_SZ_128; + struct rte_kvargs *kvlist; + + if (devargs == NULL) + goto exit; + kvlist = rte_kvargs_parse(devargs->args, NULL); + if (kvlist == NULL) + goto exit; + + rte_kvargs_process(kvlist, OTX2_MAX_POOLS, &parse_max_pools, &aura_sz); + rte_kvargs_free(kvlist); +exit: + return aura_sz; +} + static inline int npa_lf_attach(struct otx2_mbox *mbox) { @@ -251,7 +288,7 @@ otx2_npa_lf_init(struct rte_pci_device *pci_dev, void *otx2_dev) if (rc) goto npa_detach; - aura_sz = NPA_AURA_SZ_128; + aura_sz = otx2_parse_aura_size(pci_dev->device.devargs); nr_pools = otx2_aura_size_to_u32(aura_sz); lf = &dev->npalf; @@ -414,3 +451,5 @@ static struct rte_pci_driver pci_npa = { RTE_PMD_REGISTER_PCI(mempool_octeontx2, pci_npa); RTE_PMD_REGISTER_PCI_TABLE(mempool_octeontx2, pci_npa_map); RTE_PMD_REGISTER_KMOD_DEP(mempool_octeontx2, "vfio-pci"); +RTE_PMD_REGISTER_PARAM_STRING(mempool_octeontx2, + OTX2_MAX_POOLS "=<128-1048576>"); -- 2.20.1