ctrl.c (b70366e5d31788650b2a5cec5cd13ea80ac7e44a) ctrl.c (67c2315def06c1ef18492b214686531e69682800)
1/* * CAAM control-plane driver backend
2 * Controller-level driver, kernel property detection, initialization
3 *
4 * Copyright 2008-2012 Freescale Semiconductor, Inc.
5 */
6
7#include <linux/device.h>
8#include <linux/of_address.h>

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13#include "intern.h"
14#include "jr.h"
15#include "desc_constr.h"
16#include "ctrl.h"
17
18bool caam_little_end;
19EXPORT_SYMBOL(caam_little_end);
20
1/* * CAAM control-plane driver backend
2 * Controller-level driver, kernel property detection, initialization
3 *
4 * Copyright 2008-2012 Freescale Semiconductor, Inc.
5 */
6
7#include <linux/device.h>
8#include <linux/of_address.h>

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13#include "intern.h"
14#include "jr.h"
15#include "desc_constr.h"
16#include "ctrl.h"
17
18bool caam_little_end;
19EXPORT_SYMBOL(caam_little_end);
20
21#ifdef CONFIG_CAAM_QI
22#include "qi.h"
23#endif
24
21/*
22 * i.MX targets tend to have clock control subsystems that can
23 * enable/disable clocking to our device.
24 */
25#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_IMX
26static inline struct clk *caam_drv_identify_clk(struct device *dev,
27 char *clk_name)
28{

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306 ctrldev = &pdev->dev;
307 ctrlpriv = dev_get_drvdata(ctrldev);
308 ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl;
309
310 /* Remove platform devices for JobRs */
311 for (ring = 0; ring < ctrlpriv->total_jobrs; ring++)
312 of_device_unregister(ctrlpriv->jrpdev[ring]);
313
25/*
26 * i.MX targets tend to have clock control subsystems that can
27 * enable/disable clocking to our device.
28 */
29#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_IMX
30static inline struct clk *caam_drv_identify_clk(struct device *dev,
31 char *clk_name)
32{

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310 ctrldev = &pdev->dev;
311 ctrlpriv = dev_get_drvdata(ctrldev);
312 ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl;
313
314 /* Remove platform devices for JobRs */
315 for (ring = 0; ring < ctrlpriv->total_jobrs; ring++)
316 of_device_unregister(ctrlpriv->jrpdev[ring]);
317
318#ifdef CONFIG_CAAM_QI
319 if (ctrlpriv->qidev)
320 caam_qi_shutdown(ctrlpriv->qidev);
321#endif
322
314 /* De-initialize RNG state handles initialized by this driver. */
315 if (ctrlpriv->rng4_sh_init)
316 deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init);
317
318 /* Shut down debug views */
319#ifdef CONFIG_DEBUG_FS
320 debugfs_remove_recursive(ctrlpriv->dfs_root);
321#endif

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396 caam_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
397 ret = of_property_read_u32(caam_node, "fsl,sec-era", &prop);
398 of_node_put(caam_node);
399
400 return ret ? -ENOTSUPP : prop;
401}
402EXPORT_SYMBOL(caam_get_era);
403
323 /* De-initialize RNG state handles initialized by this driver. */
324 if (ctrlpriv->rng4_sh_init)
325 deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init);
326
327 /* Shut down debug views */
328#ifdef CONFIG_DEBUG_FS
329 debugfs_remove_recursive(ctrlpriv->dfs_root);
330#endif

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405 caam_node = of_find_compatible_node(NULL, NULL, "fsl,sec-v4.0");
406 ret = of_property_read_u32(caam_node, "fsl,sec-era", &prop);
407 of_node_put(caam_node);
408
409 return ret ? -ENOTSUPP : prop;
410}
411EXPORT_SYMBOL(caam_get_era);
412
404#ifdef CONFIG_DEBUG_FS
405static int caam_debugfs_u64_get(void *data, u64 *val)
406{
407 *val = caam64_to_cpu(*(u64 *)data);
408 return 0;
409}
410
411static int caam_debugfs_u32_get(void *data, u64 *val)
412{
413 *val = caam32_to_cpu(*(u32 *)data);
414 return 0;
415}
416
417DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n");
418DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u64_ro, caam_debugfs_u64_get, NULL, "%llu\n");
419#endif
420
421/* Probe routine for CAAM top (controller) level */
422static int caam_probe(struct platform_device *pdev)
423{
424 int ret, ring, ridx, rspec, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN;
425 u64 caam_id;
426 struct device *dev;
427 struct device_node *nprop, *np;
428 struct caam_ctrl __iomem *ctrl;

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610
611 ctrlpriv->jrpdev = devm_kcalloc(&pdev->dev, rspec,
612 sizeof(*ctrlpriv->jrpdev), GFP_KERNEL);
613 if (ctrlpriv->jrpdev == NULL) {
614 ret = -ENOMEM;
615 goto iounmap_ctrl;
616 }
617
413/* Probe routine for CAAM top (controller) level */
414static int caam_probe(struct platform_device *pdev)
415{
416 int ret, ring, ridx, rspec, gen_sk, ent_delay = RTSDCTL_ENT_DLY_MIN;
417 u64 caam_id;
418 struct device *dev;
419 struct device_node *nprop, *np;
420 struct caam_ctrl __iomem *ctrl;

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602
603 ctrlpriv->jrpdev = devm_kcalloc(&pdev->dev, rspec,
604 sizeof(*ctrlpriv->jrpdev), GFP_KERNEL);
605 if (ctrlpriv->jrpdev == NULL) {
606 ret = -ENOMEM;
607 goto iounmap_ctrl;
608 }
609
610#ifdef CONFIG_DEBUG_FS
611 /*
612 * FIXME: needs better naming distinction, as some amalgamation of
613 * "caam" and nprop->full_name. The OF name isn't distinctive,
614 * but does separate instances
615 */
616 perfmon = (struct caam_perfmon __force *)&ctrl->perfmon;
617
618 ctrlpriv->dfs_root = debugfs_create_dir(dev_name(dev), NULL);
619 ctrlpriv->ctl = debugfs_create_dir("ctl", ctrlpriv->dfs_root);
620#endif
618 ring = 0;
619 ridx = 0;
620 ctrlpriv->total_jobrs = 0;
621 for_each_available_child_of_node(nprop, np)
622 if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") ||
623 of_device_is_compatible(np, "fsl,sec4.0-job-ring")) {
624 ctrlpriv->jrpdev[ring] =
625 of_platform_device_create(np, NULL, dev);

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645 CTPR_MS_QI_MASK);
646 if (ctrlpriv->qi_present) {
647 ctrlpriv->qi = (struct caam_queue_if __iomem __force *)
648 ((__force uint8_t *)ctrl +
649 BLOCK_OFFSET * QI_BLOCK_NUMBER
650 );
651 /* This is all that's required to physically enable QI */
652 wr_reg32(&ctrlpriv->qi->qi_control_lo, QICTL_DQEN);
621 ring = 0;
622 ridx = 0;
623 ctrlpriv->total_jobrs = 0;
624 for_each_available_child_of_node(nprop, np)
625 if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") ||
626 of_device_is_compatible(np, "fsl,sec4.0-job-ring")) {
627 ctrlpriv->jrpdev[ring] =
628 of_platform_device_create(np, NULL, dev);

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648 CTPR_MS_QI_MASK);
649 if (ctrlpriv->qi_present) {
650 ctrlpriv->qi = (struct caam_queue_if __iomem __force *)
651 ((__force uint8_t *)ctrl +
652 BLOCK_OFFSET * QI_BLOCK_NUMBER
653 );
654 /* This is all that's required to physically enable QI */
655 wr_reg32(&ctrlpriv->qi->qi_control_lo, QICTL_DQEN);
656
657 /* If QMAN driver is present, init CAAM-QI backend */
658#ifdef CONFIG_CAAM_QI
659 ret = caam_qi_init(pdev);
660 if (ret)
661 dev_err(dev, "caam qi i/f init failed: %d\n", ret);
662#endif
653 }
654
655 /* If no QI and no rings specified, quit and go home */
656 if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) {
657 dev_err(dev, "no queues configured, terminating\n");
658 ret = -ENOMEM;
659 goto caam_remove;
660 }

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732
733 /* Report "alive" for developer to see */
734 dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id,
735 caam_get_era());
736 dev_info(dev, "job rings = %d, qi = %d\n",
737 ctrlpriv->total_jobrs, ctrlpriv->qi_present);
738
739#ifdef CONFIG_DEBUG_FS
663 }
664
665 /* If no QI and no rings specified, quit and go home */
666 if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) {
667 dev_err(dev, "no queues configured, terminating\n");
668 ret = -ENOMEM;
669 goto caam_remove;
670 }

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742
743 /* Report "alive" for developer to see */
744 dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id,
745 caam_get_era());
746 dev_info(dev, "job rings = %d, qi = %d\n",
747 ctrlpriv->total_jobrs, ctrlpriv->qi_present);
748
749#ifdef CONFIG_DEBUG_FS
740 /*
741 * FIXME: needs better naming distinction, as some amalgamation of
742 * "caam" and nprop->full_name. The OF name isn't distinctive,
743 * but does separate instances
744 */
745 perfmon = (struct caam_perfmon __force *)&ctrl->perfmon;
746
750
747 ctrlpriv->dfs_root = debugfs_create_dir(dev_name(dev), NULL);
748 ctrlpriv->ctl = debugfs_create_dir("ctl", ctrlpriv->dfs_root);
749
750 /* Controller-level - performance monitor counters */
751
752 ctrlpriv->ctl_rq_dequeued =
753 debugfs_create_file("rq_dequeued",
754 S_IRUSR | S_IRGRP | S_IROTH,
755 ctrlpriv->ctl, &perfmon->req_dequeued,
756 &caam_fops_u64_ro);
757 ctrlpriv->ctl_ob_enc_req =
758 debugfs_create_file("ob_rq_encrypted",
759 S_IRUSR | S_IRGRP | S_IROTH,

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825 S_IRUSR |
826 S_IRGRP | S_IROTH,
827 ctrlpriv->ctl,
828 &ctrlpriv->ctl_tdsk_wrap);
829#endif
830 return 0;
831
832caam_remove:
751 ctrlpriv->ctl_rq_dequeued =
752 debugfs_create_file("rq_dequeued",
753 S_IRUSR | S_IRGRP | S_IROTH,
754 ctrlpriv->ctl, &perfmon->req_dequeued,
755 &caam_fops_u64_ro);
756 ctrlpriv->ctl_ob_enc_req =
757 debugfs_create_file("ob_rq_encrypted",
758 S_IRUSR | S_IRGRP | S_IROTH,

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824 S_IRUSR |
825 S_IRGRP | S_IROTH,
826 ctrlpriv->ctl,
827 &ctrlpriv->ctl_tdsk_wrap);
828#endif
829 return 0;
830
831caam_remove:
832#ifdef CONFIG_DEBUG_FS
833 debugfs_remove_recursive(ctrlpriv->dfs_root);
834#endif
833 caam_remove(pdev);
834 return ret;
835
836iounmap_ctrl:
837 iounmap(ctrl);
838disable_caam_emi_slow:
839 if (ctrlpriv->caam_emi_slow)
840 clk_disable_unprepare(ctrlpriv->caam_emi_slow);

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836 return ret;
837
838iounmap_ctrl:
839 iounmap(ctrl);
840disable_caam_emi_slow:
841 if (ctrlpriv->caam_emi_slow)
842 clk_disable_unprepare(ctrlpriv->caam_emi_slow);

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