Adds code to not execute CPT errata "when CPT_AF_DIAG[FLT_DIS] = 0 and a CPT engine access to LLC/DRAM encounters a fault/poison, a rare case may result in unpredictable data being delivered to a CPT engine" workaround on CN10KA B0/CN10KB HW as it is fixed on these chips. Signed-off-by: Srujana Challa <schalla@xxxxxxxxxxx> --- drivers/crypto/marvell/octeontx2/otx2_cpt_common.h | 8 ++++++++ drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c | 10 ++++++---- 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/marvell/octeontx2/otx2_cpt_common.h b/drivers/crypto/marvell/octeontx2/otx2_cpt_common.h index bef78db15a89..4c5454470267 100644 --- a/drivers/crypto/marvell/octeontx2/otx2_cpt_common.h +++ b/drivers/crypto/marvell/octeontx2/otx2_cpt_common.h @@ -192,6 +192,14 @@ static inline void otx2_cpt_set_hw_caps(struct pci_dev *pdev, } } +static inline bool cpt_is_errata_38550_exists(struct pci_dev *pdev) +{ + if (is_dev_otx2(pdev) || is_dev_cn10ka_ax(pdev)) + return true; + + return false; +} + static inline bool cpt_feature_rxc_icb_cnt(struct pci_dev *pdev) { if (!is_dev_otx2(pdev) && !is_dev_cn10ka_ax(pdev)) diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c b/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c index 7fccc348f66e..7178fa81f00f 100644 --- a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c +++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c @@ -1254,10 +1254,12 @@ int otx2_cpt_create_eng_grps(struct otx2_cptpf_dev *cptpf, * encounters a fault/poison, a rare case may result in * unpredictable data being delivered to a CPT engine. */ - otx2_cpt_read_af_reg(&cptpf->afpf_mbox, pdev, CPT_AF_DIAG, ®_val, - BLKADDR_CPT0); - otx2_cpt_write_af_reg(&cptpf->afpf_mbox, pdev, CPT_AF_DIAG, - reg_val | BIT_ULL(24), BLKADDR_CPT0); + if (cpt_is_errata_38550_exists(pdev)) { + otx2_cpt_read_af_reg(&cptpf->afpf_mbox, pdev, CPT_AF_DIAG, ®_val, + BLKADDR_CPT0); + otx2_cpt_write_af_reg(&cptpf->afpf_mbox, pdev, CPT_AF_DIAG, + reg_val | BIT_ULL(24), BLKADDR_CPT0); + } mutex_unlock(&eng_grps->lock); return 0; -- 2.25.1