diff options
Diffstat (limited to 'drivers/crypto/marvell/octeontx2/otx2_cptlf.h')
| -rw-r--r-- | drivers/crypto/marvell/octeontx2/otx2_cptlf.h | 77 |
1 files changed, 51 insertions, 26 deletions
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptlf.h b/drivers/crypto/marvell/octeontx2/otx2_cptlf.h index 679b0f7b70c3..f68631ec8861 100644 --- a/drivers/crypto/marvell/octeontx2/otx2_cptlf.h +++ b/drivers/crypto/marvell/octeontx2/otx2_cptlf.h @@ -5,6 +5,7 @@ #define __OTX2_CPTLF_H #include <linux/soc/marvell/octeontx2/asm.h> +#include <linux/bitfield.h> #include <mbox.h> #include <rvu.h> #include "otx2_cpt_common.h" @@ -119,6 +120,7 @@ struct otx2_cptlfs_info { u8 kvf_limits; /* Kernel crypto limits */ atomic_t state; /* LF's state. started/reset */ int blkaddr; /* CPT blkaddr: BLKADDR_CPT0/BLKADDR_CPT1 */ + int global_slot; /* Global slot across the blocks */ }; static inline void otx2_cpt_free_instruction_queues( @@ -206,48 +208,71 @@ static inline void otx2_cptlf_set_iqueues_size(struct otx2_cptlfs_info *lfs) otx2_cptlf_do_set_iqueue_size(&lfs->lf[slot]); } +#define INFLIGHT GENMASK_ULL(8, 0) +#define GRB_CNT GENMASK_ULL(39, 32) +#define GWB_CNT GENMASK_ULL(47, 40) +#define XQ_XOR GENMASK_ULL(63, 63) +#define DQPTR GENMASK_ULL(19, 0) +#define NQPTR GENMASK_ULL(51, 32) + static inline void otx2_cptlf_do_disable_iqueue(struct otx2_cptlf_info *lf) { - union otx2_cptx_lf_ctl lf_ctl = { .u = 0x0 }; - union otx2_cptx_lf_inprog lf_inprog; + void __iomem *reg_base = lf->lfs->reg_base; + struct pci_dev *pdev = lf->lfs->pdev; u8 blkaddr = lf->lfs->blkaddr; - int timeout = 20; + int timeout = 1000000; + u64 inprog, inst_ptr; + u64 slot = lf->slot; + u64 qsize, pending; + int i = 0; /* Disable instructions enqueuing */ - otx2_cpt_write64(lf->lfs->reg_base, blkaddr, lf->slot, - OTX2_CPT_LF_CTL, lf_ctl.u); + otx2_cpt_write64(reg_base, blkaddr, slot, OTX2_CPT_LF_CTL, 0x0); - /* Wait for instruction queue to become empty */ + inprog = otx2_cpt_read64(reg_base, blkaddr, slot, OTX2_CPT_LF_INPROG); + inprog |= BIT_ULL(16); + otx2_cpt_write64(reg_base, blkaddr, slot, OTX2_CPT_LF_INPROG, inprog); + + qsize = otx2_cpt_read64(reg_base, blkaddr, slot, OTX2_CPT_LF_Q_SIZE) & 0x7FFF; + do { + inst_ptr = otx2_cpt_read64(reg_base, blkaddr, slot, OTX2_CPT_LF_Q_INST_PTR); + pending = (FIELD_GET(XQ_XOR, inst_ptr) * qsize * 40) + + FIELD_GET(NQPTR, inst_ptr) - FIELD_GET(DQPTR, inst_ptr); + udelay(1); + timeout--; + } while ((pending != 0) && (timeout != 0)); + + if (timeout == 0) + dev_warn(&pdev->dev, "TIMEOUT: CPT poll on pending instructions\n"); + + timeout = 1000000; + /* Wait for CPT queue to become execution-quiescent */ do { - lf_inprog.u = otx2_cpt_read64(lf->lfs->reg_base, blkaddr, - lf->slot, OTX2_CPT_LF_INPROG); - if (!lf_inprog.s.inflight) - break; - - usleep_range(10000, 20000); - if (timeout-- < 0) { - dev_err(&lf->lfs->pdev->dev, - "Error LF %d is still busy.\n", lf->slot); - break; + inprog = otx2_cpt_read64(reg_base, blkaddr, slot, OTX2_CPT_LF_INPROG); + + if ((FIELD_GET(INFLIGHT, inprog) == 0) && + (FIELD_GET(GRB_CNT, inprog) == 0)) { + i++; + } else { + i = 0; + timeout--; } + } while ((timeout != 0) && (i < 10)); - } while (1); - - /* - * Disable executions in the LF's queue, - * the queue should be empty at this point - */ - lf_inprog.s.eena = 0x0; - otx2_cpt_write64(lf->lfs->reg_base, blkaddr, lf->slot, - OTX2_CPT_LF_INPROG, lf_inprog.u); + if (timeout == 0) + dev_warn(&pdev->dev, "TIMEOUT: CPT poll on inflight count\n"); + /* Wait for 2 us to flush all queue writes to memory */ + udelay(2); } static inline void otx2_cptlf_disable_iqueues(struct otx2_cptlfs_info *lfs) { int slot; - for (slot = 0; slot < lfs->lfs_num; slot++) + for (slot = 0; slot < lfs->lfs_num; slot++) { otx2_cptlf_do_disable_iqueue(&lfs->lf[slot]); + otx2_cpt_lf_reset_msg(lfs, lfs->global_slot + slot); + } } static inline void otx2_cptlf_set_iqueue_enq(struct otx2_cptlf_info *lf, |