diff options
Diffstat (limited to 'drivers/crypto/caam/ctrl.c')
| -rw-r--r-- | drivers/crypto/caam/ctrl.c | 45 |
1 files changed, 26 insertions, 19 deletions
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 16bbc72f041a..e2ba3d202da5 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -18,12 +18,8 @@ #include "desc_constr.h" #include "ctrl.h" -bool caam_little_end; -EXPORT_SYMBOL(caam_little_end); bool caam_dpaa2; EXPORT_SYMBOL(caam_dpaa2); -bool caam_imx; -EXPORT_SYMBOL(caam_imx); #ifdef CONFIG_CAAM_QI #include "qi.h" @@ -472,6 +468,24 @@ static int caam_get_era(struct caam_ctrl __iomem *ctrl) return caam_get_era_from_hw(ctrl); } +/* + * ERRATA: imx6 devices (imx6D, imx6Q, imx6DL, imx6S, imx6DP and imx6DQ) + * have an issue wherein AXI bus transactions may not occur in the correct + * order. This isn't a problem running single descriptors, but can be if + * running multiple concurrent descriptors. Reworking the driver to throttle + * to single requests is impractical, thus the workaround is to limit the AXI + * pipeline to a depth of 1 (from it's default of 4) to preclude this situation + * from occurring. + */ +static void handle_imx6_err005766(u32 *mcr) +{ + if (of_machine_is_compatible("fsl,imx6q") || + of_machine_is_compatible("fsl,imx6dl") || + of_machine_is_compatible("fsl,imx6qp")) + clrsetbits_32(mcr, MCFGR_AXIPIPE_MASK, + 1 << MCFGR_AXIPIPE_SHIFT); +} + static const struct of_device_id caam_match[] = { { .compatible = "fsl,sec-v4.0", @@ -644,6 +658,8 @@ static int caam_probe(struct platform_device *pdev) (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); + handle_imx6_err005766(&ctrl->mcr); + /* * Read the Compile Time paramters and SCFGR to determine * if Virtualization is enabled for this platform @@ -863,27 +879,18 @@ static int caam_probe(struct platform_device *pdev) /* Internal covering keys (useful in non-secure mode only) */ ctrlpriv->ctl_kek_wrap.data = (__force void *)&ctrlpriv->ctrl->kek[0]; ctrlpriv->ctl_kek_wrap.size = KEK_KEY_SIZE * sizeof(u32); - ctrlpriv->ctl_kek = debugfs_create_blob("kek", - S_IRUSR | - S_IRGRP | S_IROTH, - ctrlpriv->ctl, - &ctrlpriv->ctl_kek_wrap); + debugfs_create_blob("kek", S_IRUSR | S_IRGRP | S_IROTH, ctrlpriv->ctl, + &ctrlpriv->ctl_kek_wrap); ctrlpriv->ctl_tkek_wrap.data = (__force void *)&ctrlpriv->ctrl->tkek[0]; ctrlpriv->ctl_tkek_wrap.size = KEK_KEY_SIZE * sizeof(u32); - ctrlpriv->ctl_tkek = debugfs_create_blob("tkek", - S_IRUSR | - S_IRGRP | S_IROTH, - ctrlpriv->ctl, - &ctrlpriv->ctl_tkek_wrap); + debugfs_create_blob("tkek", S_IRUSR | S_IRGRP | S_IROTH, ctrlpriv->ctl, + &ctrlpriv->ctl_tkek_wrap); ctrlpriv->ctl_tdsk_wrap.data = (__force void *)&ctrlpriv->ctrl->tdsk[0]; ctrlpriv->ctl_tdsk_wrap.size = KEK_KEY_SIZE * sizeof(u32); - ctrlpriv->ctl_tdsk = debugfs_create_blob("tdsk", - S_IRUSR | - S_IRGRP | S_IROTH, - ctrlpriv->ctl, - &ctrlpriv->ctl_tdsk_wrap); + debugfs_create_blob("tdsk", S_IRUSR | S_IRGRP | S_IROTH, ctrlpriv->ctl, + &ctrlpriv->ctl_tdsk_wrap); #endif return 0; |