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Message-Id: <20230322061716.3195841-2-meenakshi.aggarwal@nxp.com>
Date: Wed, 22 Mar 2023 07:17:15 +0100
From: meenakshi.aggarwal@....com
To: horia.geanta@....com, V.sethi@....com, pankaj.gupta@....com,
gaurav.jain@....com, herbert@...dor.apana.org.au,
davem@...emloft.net, linux-crypto@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Meenakshi Aggarwal <meenakshi.aggarwal@....com>,
Varun Sethi <v.sethi@....com>
Subject: [PATCH v2 1/2] crypto: caam - reduce page 0 regs access to minimum
From: Horia GeantA <horia.geanta@....com>
Use job ring register map, in place of controller register map
to access page 0 registers, as access to the controller register
map is not permitted.
Signed-off-by: Horia GeantA <horia.geanta@....com>
Signed-off-by: Gaurav Jain <gaurav.jain@....com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@....com>
Reviewed-by: Varun Sethi <v.sethi@....com>
---
drivers/crypto/caam/caamalg.c | 21 ++++-----
drivers/crypto/caam/caamhash.c | 10 +++--
drivers/crypto/caam/caampkc.c | 6 +--
drivers/crypto/caam/caamrng.c | 6 +--
drivers/crypto/caam/ctrl.c | 82 +++++++++++++++++++++-------------
drivers/crypto/caam/debugfs.c | 9 ++--
drivers/crypto/caam/debugfs.h | 7 ++-
7 files changed, 83 insertions(+), 58 deletions(-)
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index 12b1c8346243..feb86013dbf6 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -3,7 +3,7 @@
* caam - Freescale FSL CAAM support for crypto API
*
* Copyright 2008-2011 Freescale Semiconductor, Inc.
- * Copyright 2016-2019 NXP
+ * Copyright 2016-2019, 2023 NXP
*
* Based on talitos crypto API driver.
*
@@ -3542,13 +3542,14 @@ int caam_algapi_init(struct device *ctrldev)
* First, detect presence and attributes of DES, AES, and MD blocks.
*/
if (priv->era < 10) {
+ struct caam_perfmon __iomem *perfmon = &priv->jr[0]->perfmon;
u32 cha_vid, cha_inst, aes_rn;
- cha_vid = rd_reg32(&priv->ctrl->perfmon.cha_id_ls);
+ cha_vid = rd_reg32(&perfmon->cha_id_ls);
aes_vid = cha_vid & CHA_ID_LS_AES_MASK;
md_vid = (cha_vid & CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT;
- cha_inst = rd_reg32(&priv->ctrl->perfmon.cha_num_ls);
+ cha_inst = rd_reg32(&perfmon->cha_num_ls);
des_inst = (cha_inst & CHA_ID_LS_DES_MASK) >>
CHA_ID_LS_DES_SHIFT;
aes_inst = cha_inst & CHA_ID_LS_AES_MASK;
@@ -3556,23 +3557,23 @@ int caam_algapi_init(struct device *ctrldev)
ccha_inst = 0;
ptha_inst = 0;
- aes_rn = rd_reg32(&priv->ctrl->perfmon.cha_rev_ls) &
- CHA_ID_LS_AES_MASK;
+ aes_rn = rd_reg32(&perfmon->cha_rev_ls) & CHA_ID_LS_AES_MASK;
gcm_support = !(aes_vid == CHA_VER_VID_AES_LP && aes_rn < 8);
} else {
+ struct version_regs __iomem *vreg = &priv->jr[0]->vreg;
u32 aesa, mdha;
- aesa = rd_reg32(&priv->ctrl->vreg.aesa);
- mdha = rd_reg32(&priv->ctrl->vreg.mdha);
+ aesa = rd_reg32(&vreg->aesa);
+ mdha = rd_reg32(&vreg->mdha);
aes_vid = (aesa & CHA_VER_VID_MASK) >> CHA_VER_VID_SHIFT;
md_vid = (mdha & CHA_VER_VID_MASK) >> CHA_VER_VID_SHIFT;
- des_inst = rd_reg32(&priv->ctrl->vreg.desa) & CHA_VER_NUM_MASK;
+ des_inst = rd_reg32(&vreg->desa) & CHA_VER_NUM_MASK;
aes_inst = aesa & CHA_VER_NUM_MASK;
md_inst = mdha & CHA_VER_NUM_MASK;
- ccha_inst = rd_reg32(&priv->ctrl->vreg.ccha) & CHA_VER_NUM_MASK;
- ptha_inst = rd_reg32(&priv->ctrl->vreg.ptha) & CHA_VER_NUM_MASK;
+ ccha_inst = rd_reg32(&vreg->ccha) & CHA_VER_NUM_MASK;
+ ptha_inst = rd_reg32(&vreg->ptha) & CHA_VER_NUM_MASK;
gcm_support = aesa & CHA_VER_MISC_AES_GCM;
}
diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index 82d3c730a502..80deb003f0a5 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -3,7 +3,7 @@
* caam - Freescale FSL CAAM support for ahash functions of crypto API
*
* Copyright 2011 Freescale Semiconductor, Inc.
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2019, 2023 NXP
*
* Based on caamalg.c crypto API driver.
*
@@ -1956,12 +1956,14 @@ int caam_algapi_hash_init(struct device *ctrldev)
* presence and attributes of MD block.
*/
if (priv->era < 10) {
- md_vid = (rd_reg32(&priv->ctrl->perfmon.cha_id_ls) &
+ struct caam_perfmon __iomem *perfmon = &priv->jr[0]->perfmon;
+
+ md_vid = (rd_reg32(&perfmon->cha_id_ls) &
CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT;
- md_inst = (rd_reg32(&priv->ctrl->perfmon.cha_num_ls) &
+ md_inst = (rd_reg32(&perfmon->cha_num_ls) &
CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT;
} else {
- u32 mdha = rd_reg32(&priv->ctrl->vreg.mdha);
+ u32 mdha = rd_reg32(&priv->jr[0]->vreg.mdha);
md_vid = (mdha & CHA_VER_VID_MASK) >> CHA_VER_VID_SHIFT;
md_inst = mdha & CHA_VER_NUM_MASK;
diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c
index e40614fef39d..72afc249d42f 100644
--- a/drivers/crypto/caam/caampkc.c
+++ b/drivers/crypto/caam/caampkc.c
@@ -3,7 +3,7 @@
* caam - Freescale FSL CAAM support for Public Key Cryptography
*
* Copyright 2016 Freescale Semiconductor, Inc.
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2019, 2023 NXP
*
* There is no Shared Descriptor for PKC so that the Job Descriptor must carry
* all the desired key parameters, input and output pointers.
@@ -1168,10 +1168,10 @@ int caam_pkc_init(struct device *ctrldev)
/* Determine public key hardware accelerator presence. */
if (priv->era < 10) {
- pk_inst = (rd_reg32(&priv->ctrl->perfmon.cha_num_ls) &
+ pk_inst = (rd_reg32(&priv->jr[0]->perfmon.cha_num_ls) &
CHA_ID_LS_PK_MASK) >> CHA_ID_LS_PK_SHIFT;
} else {
- pkha = rd_reg32(&priv->ctrl->vreg.pkha);
+ pkha = rd_reg32(&priv->jr[0]->vreg.pkha);
pk_inst = pkha & CHA_VER_NUM_MASK;
/*
diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c
index 1fd8ff965006..50eb55da45c2 100644
--- a/drivers/crypto/caam/caamrng.c
+++ b/drivers/crypto/caam/caamrng.c
@@ -3,7 +3,7 @@
* caam - Freescale FSL CAAM support for hw_random
*
* Copyright 2011 Freescale Semiconductor, Inc.
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2019, 2023 NXP
*
* Based on caamalg.c crypto API driver.
*
@@ -227,10 +227,10 @@ int caam_rng_init(struct device *ctrldev)
/* Check for an instantiated RNG before registration */
if (priv->era < 10)
- rng_inst = (rd_reg32(&priv->ctrl->perfmon.cha_num_ls) &
+ rng_inst = (rd_reg32(&priv->jr[0]->perfmon.cha_num_ls) &
CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT;
else
- rng_inst = rd_reg32(&priv->ctrl->vreg.rng) & CHA_VER_NUM_MASK;
+ rng_inst = rd_reg32(&priv->jr[0]->vreg.rng) & CHA_VER_NUM_MASK;
if (!rng_inst)
return 0;
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 6278afb951c3..ae07c1e5fd38 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -3,7 +3,7 @@
* Controller-level driver, kernel property detection, initialization
*
* Copyright 2008-2012 Freescale Semiconductor, Inc.
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2019, 2023 NXP
*/
#include <linux/device.h>
@@ -395,7 +395,7 @@ static void kick_trng(struct platform_device *pdev, int ent_delay)
RTMCTL_SAMP_MODE_RAW_ES_SC);
}
-static int caam_get_era_from_hw(struct caam_ctrl __iomem *ctrl)
+static int caam_get_era_from_hw(struct caam_perfmon __iomem *perfmon)
{
static const struct {
u16 ip_id;
@@ -421,12 +421,12 @@ static int caam_get_era_from_hw(struct caam_ctrl __iomem *ctrl)
u16 ip_id;
int i;
- ccbvid = rd_reg32(&ctrl->perfmon.ccb_id);
+ ccbvid = rd_reg32(&perfmon->ccb_id);
era = (ccbvid & CCBVID_ERA_MASK) >> CCBVID_ERA_SHIFT;
if (era) /* This is '0' prior to CAAM ERA-6 */
return era;
- id_ms = rd_reg32(&ctrl->perfmon.caam_id_ms);
+ id_ms = rd_reg32(&perfmon->caam_id_ms);
ip_id = (id_ms & SECVID_MS_IPID_MASK) >> SECVID_MS_IPID_SHIFT;
maj_rev = (id_ms & SECVID_MS_MAJ_REV_MASK) >> SECVID_MS_MAJ_REV_SHIFT;
@@ -444,9 +444,9 @@ static int caam_get_era_from_hw(struct caam_ctrl __iomem *ctrl)
* In case this property is not passed an attempt to retrieve the CAAM
* era via register reads will be made.
*
- * @ctrl: controller region
+ * @perfmon: Performance Monitor Registers
*/
-static int caam_get_era(struct caam_ctrl __iomem *ctrl)
+static int caam_get_era(struct caam_perfmon __iomem *perfmon)
{
struct device_node *caam_node;
int ret;
@@ -459,7 +459,7 @@ static int caam_get_era(struct caam_ctrl __iomem *ctrl)
if (!ret)
return prop;
else
- return caam_get_era_from_hw(ctrl);
+ return caam_get_era_from_hw(perfmon);
}
/*
@@ -626,6 +626,7 @@ static int caam_probe(struct platform_device *pdev)
struct device_node *nprop, *np;
struct caam_ctrl __iomem *ctrl;
struct caam_drv_private *ctrlpriv;
+ struct caam_perfmon __iomem *perfmon;
struct dentry *dfs_root;
u32 scfgr, comp_params;
u8 rng_vid;
@@ -665,9 +666,36 @@ static int caam_probe(struct platform_device *pdev)
return ret;
}
- caam_little_end = !(bool)(rd_reg32(&ctrl->perfmon.status) &
+ ring = 0;
+ for_each_available_child_of_node(nprop, np)
+ if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") ||
+ of_device_is_compatible(np, "fsl,sec4.0-job-ring")) {
+ u32 reg;
+
+ if (of_property_read_u32_index(np, "reg", 0, ®)) {
+ dev_err(dev, "%s read reg property error\n",
+ np->full_name);
+ continue;
+ }
+
+ ctrlpriv->jr[ring] = (struct caam_job_ring __iomem __force *)
+ ((__force uint8_t *)ctrl + reg);
+
+ ctrlpriv->total_jobrs++;
+ ring++;
+ }
+
+ /*
+ * Wherever possible, instead of accessing registers from the global page,
+ * use the alias registers in the first (cf. DT nodes order)
+ * job ring's page.
+ */
+ perfmon = ring ? (struct caam_perfmon __iomem *)&ctrlpriv->jr[0]->perfmon :
+ (struct caam_perfmon __iomem *)&ctrl->perfmon;
+
+ caam_little_end = !(bool)(rd_reg32(&perfmon->status) &
(CSTA_PLEND | CSTA_ALT_PLEND));
- comp_params = rd_reg32(&ctrl->perfmon.comp_parms_ms);
+ comp_params = rd_reg32(&perfmon->comp_parms_ms);
if (comp_params & CTPR_MS_PS && rd_reg32(&ctrl->mcr) & MCFGR_LONG_PTR)
caam_ptr_sz = sizeof(u64);
else
@@ -778,7 +806,7 @@ static int caam_probe(struct platform_device *pdev)
return ret;
}
- ctrlpriv->era = caam_get_era(ctrl);
+ ctrlpriv->era = caam_get_era(perfmon);
ctrlpriv->domain = iommu_get_domain_for_dev(dev);
dfs_root = debugfs_create_dir(dev_name(dev), NULL);
@@ -789,7 +817,7 @@ static int caam_probe(struct platform_device *pdev)
return ret;
}
- caam_debugfs_init(ctrlpriv, dfs_root);
+ caam_debugfs_init(ctrlpriv, perfmon, dfs_root);
/* Check to see if (DPAA 1.x) QI present. If so, enable */
if (ctrlpriv->qi_present && !caam_dpaa2) {
@@ -808,26 +836,13 @@ static int caam_probe(struct platform_device *pdev)
#endif
}
- ring = 0;
- for_each_available_child_of_node(nprop, np)
- if (of_device_is_compatible(np, "fsl,sec-v4.0-job-ring") ||
- of_device_is_compatible(np, "fsl,sec4.0-job-ring")) {
- ctrlpriv->jr[ring] = (struct caam_job_ring __iomem __force *)
- ((__force uint8_t *)ctrl +
- (ring + JR_BLOCK_NUMBER) *
- BLOCK_OFFSET
- );
- ctrlpriv->total_jobrs++;
- ring++;
- }
-
/* If no QI and no rings specified, quit and go home */
if ((!ctrlpriv->qi_present) && (!ctrlpriv->total_jobrs)) {
dev_err(dev, "no queues configured, terminating\n");
return -ENOMEM;
}
- comp_params = rd_reg32(&ctrl->perfmon.comp_parms_ls);
+ comp_params = rd_reg32(&perfmon->comp_parms_ls);
ctrlpriv->blob_present = !!(comp_params & CTPR_LS_BLOB);
/*
@@ -836,15 +851,20 @@ static int caam_probe(struct platform_device *pdev)
* check both here.
*/
if (ctrlpriv->era < 10) {
- rng_vid = (rd_reg32(&ctrl->perfmon.cha_id_ls) &
+ rng_vid = (rd_reg32(&perfmon->cha_id_ls) &
CHA_ID_LS_RNG_MASK) >> CHA_ID_LS_RNG_SHIFT;
ctrlpriv->blob_present = ctrlpriv->blob_present &&
- (rd_reg32(&ctrl->perfmon.cha_num_ls) & CHA_ID_LS_AES_MASK);
+ (rd_reg32(&perfmon->cha_num_ls) & CHA_ID_LS_AES_MASK);
} else {
- rng_vid = (rd_reg32(&ctrl->vreg.rng) & CHA_VER_VID_MASK) >>
+ struct version_regs __iomem *vreg;
+
+ vreg = ring ? (struct version_regs __iomem *)&ctrlpriv->jr[0]->vreg :
+ (struct version_regs __iomem *)&ctrl->vreg;
+
+ rng_vid = (rd_reg32(&vreg->rng) & CHA_VER_VID_MASK) >>
CHA_VER_VID_SHIFT;
ctrlpriv->blob_present = ctrlpriv->blob_present &&
- (rd_reg32(&ctrl->vreg.aesa) & CHA_VER_MISC_AES_NUM_MASK);
+ (rd_reg32(&vreg->aesa) & CHA_VER_MISC_AES_NUM_MASK);
}
/*
@@ -925,8 +945,8 @@ static int caam_probe(struct platform_device *pdev)
/* NOTE: RTIC detection ought to go here, around Si time */
- caam_id = (u64)rd_reg32(&ctrl->perfmon.caam_id_ms) << 32 |
- (u64)rd_reg32(&ctrl->perfmon.caam_id_ls);
+ caam_id = (u64)rd_reg32(&perfmon->caam_id_ms) << 32 |
+ (u64)rd_reg32(&perfmon->caam_id_ls);
/* Report "alive" for developer to see */
dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id,
diff --git a/drivers/crypto/caam/debugfs.c b/drivers/crypto/caam/debugfs.c
index 806bb20d2aa1..798ba989a8a0 100644
--- a/drivers/crypto/caam/debugfs.c
+++ b/drivers/crypto/caam/debugfs.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
-/* Copyright 2019 NXP */
+/* Copyright 2019, 2023 NXP */
#include <linux/debugfs.h>
#include "compat.h"
@@ -42,16 +42,15 @@ void caam_debugfs_qi_init(struct caam_drv_private *ctrlpriv)
}
#endif
-void caam_debugfs_init(struct caam_drv_private *ctrlpriv, struct dentry *root)
+void caam_debugfs_init(struct caam_drv_private *ctrlpriv,
+ struct caam_perfmon __iomem *perfmon,
+ struct dentry *root)
{
- struct caam_perfmon *perfmon;
-
/*
* FIXME: needs better naming distinction, as some amalgamation of
* "caam" and nprop->full_name. The OF name isn't distinctive,
* but does separate instances
*/
- perfmon = (struct caam_perfmon __force *)&ctrlpriv->ctrl->perfmon;
ctrlpriv->ctl = debugfs_create_dir("ctl", root);
diff --git a/drivers/crypto/caam/debugfs.h b/drivers/crypto/caam/debugfs.h
index 661d768acdbf..78e3c6b957c2 100644
--- a/drivers/crypto/caam/debugfs.h
+++ b/drivers/crypto/caam/debugfs.h
@@ -1,16 +1,19 @@
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
-/* Copyright 2019 NXP */
+/* Copyright 2019, 2023 NXP */
#ifndef CAAM_DEBUGFS_H
#define CAAM_DEBUGFS_H
struct dentry;
struct caam_drv_private;
+struct caam_perfmon;
#ifdef CONFIG_DEBUG_FS
-void caam_debugfs_init(struct caam_drv_private *ctrlpriv, struct dentry *root);
+void caam_debugfs_init(struct caam_drv_private *ctrlpriv,
+ struct caam_perfmon __iomem *perfmon, struct dentry *root);
#else
static inline void caam_debugfs_init(struct caam_drv_private *ctrlpriv,
+ struct caam_perfmon __iomem *perfmon,
struct dentry *root)
{}
#endif
--
2.25.1
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