diff options
| -rw-r--r-- | drivers/crypto/caam/ctrl.c | 41 | ||||
| -rw-r--r-- | drivers/crypto/caam/ctrl.h | 13 | ||||
| -rw-r--r-- | drivers/crypto/caam/regs.h | 6 |
3 files changed, 58 insertions, 2 deletions
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index ac6abb375c8..414ba20c05a 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -11,6 +11,7 @@ #include "jr.h" #include "desc_constr.h" #include "error.h" +#include "ctrl.h" static int caam_remove(struct platform_device *pdev) { @@ -155,10 +156,44 @@ static void kick_trng(struct platform_device *pdev) clrbits32(&r4tst->rtmctl, RTMCTL_PRGM); } +/** + * caam_get_era() - Return the ERA of the SEC on SoC, based + * on the SEC_VID register. + * Returns the ERA number (1..4) or -ENOTSUPP if the ERA is unknown. + * @caam_id - the value of the SEC_VID register + **/ +int caam_get_era(u64 caam_id) +{ + struct sec_vid *sec_vid = (struct sec_vid *)&caam_id; + static const struct { + u16 ip_id; + u8 maj_rev; + u8 era; + } caam_eras[] = { + {0x0A10, 1, 1}, + {0x0A10, 2, 2}, + {0x0A12, 1, 3}, + {0x0A14, 1, 3}, + {0x0A14, 2, 4}, + {0x0A16, 1, 4}, + {0x0A11, 1, 4} + }; + int i; + + for (i = 0; i < ARRAY_SIZE(caam_eras); i++) + if (caam_eras[i].ip_id == sec_vid->ip_id && + caam_eras[i].maj_rev == sec_vid->maj_rev) + return caam_eras[i].era; + + return -ENOTSUPP; +} +EXPORT_SYMBOL(caam_get_era); + /* Probe routine for CAAM top (controller) level */ static int caam_probe(struct platform_device *pdev) { int ret, ring, rspec; + u64 caam_id; struct device *dev; struct device_node *nprop, *np; struct caam_ctrl __iomem *ctrl; @@ -276,9 +311,11 @@ static int caam_probe(struct platform_device *pdev) /* Initialize queue allocator lock */ spin_lock_init(&ctrlpriv->jr_alloc_lock); + caam_id = rd_reg64(&topregs->ctrl.perfmon.caam_id); + /* Report "alive" for developer to see */ - dev_info(dev, "device ID = 0x%016llx\n", - rd_reg64(&topregs->ctrl.perfmon.caam_id)); + dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id, + caam_get_era(caam_id)); dev_info(dev, "job rings = %d, qi = %d\n", ctrlpriv->total_jobrs, ctrlpriv->qi_present); diff --git a/drivers/crypto/caam/ctrl.h b/drivers/crypto/caam/ctrl.h new file mode 100644 index 00000000000..980d44eaaf4 --- /dev/null +++ b/drivers/crypto/caam/ctrl.h @@ -0,0 +1,13 @@ +/* + * CAAM control-plane driver backend public-level include definitions + * + * Copyright 2012 Freescale Semiconductor, Inc. + */ + +#ifndef CTRL_H +#define CTRL_H + +/* Prototypes for backend-level services exposed to APIs */ +int caam_get_era(u64 caam_id); + +#endif /* CTRL_H */ diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h index 6d9f1d98297..3223fc6d647 100644 --- a/drivers/crypto/caam/regs.h +++ b/drivers/crypto/caam/regs.h @@ -117,6 +117,12 @@ struct jr_outentry { #define CHA_NUM_DECONUM_SHIFT 56 #define CHA_NUM_DECONUM_MASK (0xfull << CHA_NUM_DECONUM_SHIFT) +struct sec_vid { + u16 ip_id; + u8 maj_rev; + u8 min_rev; +}; + struct caam_perfmon { /* Performance Monitor Registers f00-f9f */ u64 req_dequeued; /* PC_REQ_DEQ - Dequeued Requests */ |