crypto: ux500 - Add driver for CRYP hardware
This adds a driver for the ST-Ericsson ux500 crypto hardware
module. It supports AES, DES and 3DES, the driver implements
support for AES-ECB,CBC and CTR.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andreas Westin <andreas.westin@stericsson.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/ux500/Kconfig b/drivers/crypto/ux500/Kconfig
new file mode 100644
index 0000000..b893fa0
--- /dev/null
+++ b/drivers/crypto/ux500/Kconfig
@@ -0,0 +1,21 @@
+#
+# Copyright (C) ST-Ericsson SA 2010
+# Author: Shujuan Chen (shujuan.chen@stericsson.com)
+# License terms: GNU General Public License (GPL) version 2
+#
+
+config CRYPTO_DEV_UX500_CRYP
+ tristate "UX500 crypto driver for CRYP block"
+ depends on CRYPTO_DEV_UX500
+ select CRYPTO_DES
+ help
+ This selects the crypto driver for the UX500_CRYP hardware. It supports
+ AES-ECB, CBC and CTR with keys sizes of 128, 192 and 256 bit sizes.
+
+config CRYPTO_DEV_UX500_DEBUG
+ bool "Activate ux500 platform debug-mode for crypto and hash block"
+ depends on CRYPTO_DEV_UX500_CRYP || CRYPTO_DEV_UX500_HASH
+ default n
+ help
+ Say Y if you want to add debug prints to ux500_hash and
+ ux500_cryp devices.
diff --git a/drivers/crypto/ux500/Makefile b/drivers/crypto/ux500/Makefile
new file mode 100644
index 0000000..beb4d37
--- /dev/null
+++ b/drivers/crypto/ux500/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) ST-Ericsson SA 2010
+# Author: Shujuan Chen (shujuan.chen@stericsson.com)
+# License terms: GNU General Public License (GPL) version 2
+#
+
+obj-$(CONFIG_CRYPTO_DEV_UX500_CRYP) += cryp/
diff --git a/drivers/crypto/ux500/cryp/Makefile b/drivers/crypto/ux500/cryp/Makefile
new file mode 100644
index 0000000..e5d362a
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/Makefile
@@ -0,0 +1,13 @@
+#/*
+# * Copyright (C) ST-Ericsson SA 2010
+# * Author: shujuan.chen@stericsson.com for ST-Ericsson.
+# * License terms: GNU General Public License (GPL) version 2 */
+
+ifdef CONFIG_CRYPTO_DEV_UX500_DEBUG
+CFLAGS_cryp_core.o := -DDEBUG -O0
+CFLAGS_cryp.o := -DDEBUG -O0
+CFLAGS_cryp_irq.o := -DDEBUG -O0
+endif
+
+obj-$(CONFIG_CRYPTO_DEV_UX500_CRYP) += ux500_cryp.o
+ux500_cryp-objs := cryp.o cryp_irq.o cryp_core.o
diff --git a/drivers/crypto/ux500/cryp/cryp.c b/drivers/crypto/ux500/cryp/cryp.c
new file mode 100644
index 0000000..bd206ff
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/cryp.c
@@ -0,0 +1,391 @@
+/**
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
+ * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
+ * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
+ * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include <mach/hardware.h>
+
+#include "cryp_p.h"
+#include "cryp.h"
+
+/**
+ * cryp_wait_until_done - wait until the device logic is not busy
+ */
+void cryp_wait_until_done(struct cryp_device_data *device_data)
+{
+ while (cryp_is_logic_busy(device_data))
+ cpu_relax();
+}
+
+/**
+ * cryp_check - This routine checks Peripheral and PCell Id
+ * @device_data: Pointer to the device data struct for base address.
+ */
+int cryp_check(struct cryp_device_data *device_data)
+{
+ int peripheralid2 = 0;
+
+ if (NULL == device_data)
+ return -EINVAL;
+
+ if (cpu_is_u8500())
+ peripheralid2 = CRYP_PERIPHERAL_ID2_DB8500;
+ else if (cpu_is_u5500())
+ peripheralid2 = CRYP_PERIPHERAL_ID2_DB5500;
+
+ /* Check Peripheral and Pcell Id Register for CRYP */
+ if ((CRYP_PERIPHERAL_ID0 ==
+ readl_relaxed(&device_data->base->periphId0))
+ && (CRYP_PERIPHERAL_ID1 ==
+ readl_relaxed(&device_data->base->periphId1))
+ && (peripheralid2 ==
+ readl_relaxed(&device_data->base->periphId2))
+ && (CRYP_PERIPHERAL_ID3 ==
+ readl_relaxed(&device_data->base->periphId3))
+ && (CRYP_PCELL_ID0 ==
+ readl_relaxed(&device_data->base->pcellId0))
+ && (CRYP_PCELL_ID1 ==
+ readl_relaxed(&device_data->base->pcellId1))
+ && (CRYP_PCELL_ID2 ==
+ readl_relaxed(&device_data->base->pcellId2))
+ && (CRYP_PCELL_ID3 ==
+ readl_relaxed(&device_data->base->pcellId3))) {
+ return 0;
+ }
+
+ return -EPERM;
+}
+
+/**
+ * cryp_activity - This routine enables/disable the cryptography function.
+ * @device_data: Pointer to the device data struct for base address.
+ * @cryp_crypen: Enable/Disable functionality
+ */
+void cryp_activity(struct cryp_device_data *device_data,
+ enum cryp_crypen cryp_crypen)
+{
+ CRYP_PUT_BITS(&device_data->base->cr,
+ cryp_crypen,
+ CRYP_CR_CRYPEN_POS,
+ CRYP_CR_CRYPEN_MASK);
+}
+
+/**
+ * cryp_flush_inoutfifo - Resets both the input and the output FIFOs
+ * @device_data: Pointer to the device data struct for base address.
+ */
+void cryp_flush_inoutfifo(struct cryp_device_data *device_data)
+{
+ /*
+ * We always need to disble the hardware before trying to flush the
+ * FIFO. This is something that isn't written in the design
+ * specification, but we have been informed by the hardware designers
+ * that this must be done.
+ */
+ cryp_activity(device_data, CRYP_CRYPEN_DISABLE);
+ cryp_wait_until_done(device_data);
+
+ CRYP_SET_BITS(&device_data->base->cr, CRYP_CR_FFLUSH_MASK);
+ /*
+ * CRYP_SR_INFIFO_READY_MASK is the expected value on the status
+ * register when starting a new calculation, which means Input FIFO is
+ * not full and input FIFO is empty.
+ */
+ while (readl_relaxed(&device_data->base->sr) !=
+ CRYP_SR_INFIFO_READY_MASK)
+ cpu_relax();
+}
+
+/**
+ * cryp_set_configuration - This routine set the cr CRYP IP
+ * @device_data: Pointer to the device data struct for base address.
+ * @cryp_config: Pointer to the configuration parameter
+ * @control_register: The control register to be written later on.
+ */
+int cryp_set_configuration(struct cryp_device_data *device_data,
+ struct cryp_config *cryp_config,
+ u32 *control_register)
+{
+ u32 cr_for_kse;
+
+ if (NULL == device_data || NULL == cryp_config)
+ return -EINVAL;
+
+ *control_register |= (cryp_config->keysize << CRYP_CR_KEYSIZE_POS);
+
+ /* Prepare key for decryption in AES_ECB and AES_CBC mode. */
+ if ((CRYP_ALGORITHM_DECRYPT == cryp_config->algodir) &&
+ ((CRYP_ALGO_AES_ECB == cryp_config->algomode) ||
+ (CRYP_ALGO_AES_CBC == cryp_config->algomode))) {
+ cr_for_kse = *control_register;
+ /*
+ * This seems a bit odd, but it is indeed needed to set this to
+ * encrypt even though it is a decryption that we are doing. It
+ * also mentioned in the design spec that you need to do this.
+ * After the keyprepartion for decrypting is done you should set
+ * algodir back to decryption, which is done outside this if
+ * statement.
+ *
+ * According to design specification we should set mode ECB
+ * during key preparation even though we might be running CBC
+ * when enter this function.
+ *
+ * Writing to KSE_ENABLED will drop CRYPEN when key preparation
+ * is done. Therefore we need to set CRYPEN again outside this
+ * if statement when running decryption.
+ */
+ cr_for_kse |= ((CRYP_ALGORITHM_ENCRYPT << CRYP_CR_ALGODIR_POS) |
+ (CRYP_ALGO_AES_ECB << CRYP_CR_ALGOMODE_POS) |
+ (CRYP_CRYPEN_ENABLE << CRYP_CR_CRYPEN_POS) |
+ (KSE_ENABLED << CRYP_CR_KSE_POS));
+
+ writel_relaxed(cr_for_kse, &device_data->base->cr);
+ cryp_wait_until_done(device_data);
+ }
+
+ *control_register |=
+ ((cryp_config->algomode << CRYP_CR_ALGOMODE_POS) |
+ (cryp_config->algodir << CRYP_CR_ALGODIR_POS));
+
+ return 0;
+}
+
+/**
+ * cryp_configure_protection - set the protection bits in the CRYP logic.
+ * @device_data: Pointer to the device data struct for base address.
+ * @p_protect_config: Pointer to the protection mode and
+ * secure mode configuration
+ */
+int cryp_configure_protection(struct cryp_device_data *device_data,
+ struct cryp_protection_config *p_protect_config)
+{
+ if (NULL == p_protect_config)
+ return -EINVAL;
+
+ CRYP_WRITE_BIT(&device_data->base->cr,
+ (u32) p_protect_config->secure_access,
+ CRYP_CR_SECURE_MASK);
+ CRYP_PUT_BITS(&device_data->base->cr,
+ p_protect_config->privilege_access,
+ CRYP_CR_PRLG_POS,
+ CRYP_CR_PRLG_MASK);
+
+ return 0;
+}
+
+/**
+ * cryp_is_logic_busy - returns the busy status of the CRYP logic
+ * @device_data: Pointer to the device data struct for base address.
+ */
+int cryp_is_logic_busy(struct cryp_device_data *device_data)
+{
+ return CRYP_TEST_BITS(&device_data->base->sr,
+ CRYP_SR_BUSY_MASK);
+}
+
+/**
+ * cryp_configure_for_dma - configures the CRYP IP for DMA operation
+ * @device_data: Pointer to the device data struct for base address.
+ * @dma_req: Specifies the DMA request type value.
+ */
+void cryp_configure_for_dma(struct cryp_device_data *device_data,
+ enum cryp_dma_req_type dma_req)
+{
+ CRYP_SET_BITS(&device_data->base->dmacr,
+ (u32) dma_req);
+}
+
+/**
+ * cryp_configure_key_values - configures the key values for CRYP operations
+ * @device_data: Pointer to the device data struct for base address.
+ * @key_reg_index: Key value index register
+ * @key_value: The key value struct
+ */
+int cryp_configure_key_values(struct cryp_device_data *device_data,
+ enum cryp_key_reg_index key_reg_index,
+ struct cryp_key_value key_value)
+{
+ while (cryp_is_logic_busy(device_data))
+ cpu_relax();
+
+ switch (key_reg_index) {
+ case CRYP_KEY_REG_1:
+ writel_relaxed(key_value.key_value_left,
+ &device_data->base->key_1_l);
+ writel_relaxed(key_value.key_value_right,
+ &device_data->base->key_1_r);
+ break;
+ case CRYP_KEY_REG_2:
+ writel_relaxed(key_value.key_value_left,
+ &device_data->base->key_2_l);
+ writel_relaxed(key_value.key_value_right,
+ &device_data->base->key_2_r);
+ break;
+ case CRYP_KEY_REG_3:
+ writel_relaxed(key_value.key_value_left,
+ &device_data->base->key_3_l);
+ writel_relaxed(key_value.key_value_right,
+ &device_data->base->key_3_r);
+ break;
+ case CRYP_KEY_REG_4:
+ writel_relaxed(key_value.key_value_left,
+ &device_data->base->key_4_l);
+ writel_relaxed(key_value.key_value_right,
+ &device_data->base->key_4_r);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * cryp_configure_init_vector - configures the initialization vector register
+ * @device_data: Pointer to the device data struct for base address.
+ * @init_vector_index: Specifies the index of the init vector.
+ * @init_vector_value: Specifies the value for the init vector.
+ */
+int cryp_configure_init_vector(struct cryp_device_data *device_data,
+ enum cryp_init_vector_index
+ init_vector_index,
+ struct cryp_init_vector_value
+ init_vector_value)
+{
+ while (cryp_is_logic_busy(device_data))
+ cpu_relax();
+
+ switch (init_vector_index) {
+ case CRYP_INIT_VECTOR_INDEX_0:
+ writel_relaxed(init_vector_value.init_value_left,
+ &device_data->base->init_vect_0_l);
+ writel_relaxed(init_vector_value.init_value_right,
+ &device_data->base->init_vect_0_r);
+ break;
+ case CRYP_INIT_VECTOR_INDEX_1:
+ writel_relaxed(init_vector_value.init_value_left,
+ &device_data->base->init_vect_1_l);
+ writel_relaxed(init_vector_value.init_value_right,
+ &device_data->base->init_vect_1_r);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * cryp_save_device_context - Store hardware registers and
+ * other device context parameter
+ * @device_data: Pointer to the device data struct for base address.
+ * @ctx: Crypto device context
+ */
+void cryp_save_device_context(struct cryp_device_data *device_data,
+ struct cryp_device_context *ctx,
+ int cryp_mode)
+{
+ enum cryp_algo_mode algomode;
+ struct cryp_register *src_reg = device_data->base;
+ struct cryp_config *config =
+ (struct cryp_config *)device_data->current_ctx;
+
+ /*
+ * Always start by disable the hardware and wait for it to finish the
+ * ongoing calculations before trying to reprogram it.
+ */
+ cryp_activity(device_data, CRYP_CRYPEN_DISABLE);
+ cryp_wait_until_done(device_data);
+
+ if (cryp_mode == CRYP_MODE_DMA)
+ cryp_configure_for_dma(device_data, CRYP_DMA_DISABLE_BOTH);
+
+ if (CRYP_TEST_BITS(&src_reg->sr, CRYP_SR_IFEM_MASK) == 0)
+ ctx->din = readl_relaxed(&src_reg->din);
+
+ ctx->cr = readl_relaxed(&src_reg->cr) & CRYP_CR_CONTEXT_SAVE_MASK;
+
+ switch (config->keysize) {
+ case CRYP_KEY_SIZE_256:
+ ctx->key_4_l = readl_relaxed(&src_reg->key_4_l);
+ ctx->key_4_r = readl_relaxed(&src_reg->key_4_r);
+
+ case CRYP_KEY_SIZE_192:
+ ctx->key_3_l = readl_relaxed(&src_reg->key_3_l);
+ ctx->key_3_r = readl_relaxed(&src_reg->key_3_r);
+
+ case CRYP_KEY_SIZE_128:
+ ctx->key_2_l = readl_relaxed(&src_reg->key_2_l);
+ ctx->key_2_r = readl_relaxed(&src_reg->key_2_r);
+
+ default:
+ ctx->key_1_l = readl_relaxed(&src_reg->key_1_l);
+ ctx->key_1_r = readl_relaxed(&src_reg->key_1_r);
+ }
+
+ /* Save IV for CBC mode for both AES and DES. */
+ algomode = ((ctx->cr & CRYP_CR_ALGOMODE_MASK) >> CRYP_CR_ALGOMODE_POS);
+ if (algomode == CRYP_ALGO_TDES_CBC ||
+ algomode == CRYP_ALGO_DES_CBC ||
+ algomode == CRYP_ALGO_AES_CBC) {
+ ctx->init_vect_0_l = readl_relaxed(&src_reg->init_vect_0_l);
+ ctx->init_vect_0_r = readl_relaxed(&src_reg->init_vect_0_r);
+ ctx->init_vect_1_l = readl_relaxed(&src_reg->init_vect_1_l);
+ ctx->init_vect_1_r = readl_relaxed(&src_reg->init_vect_1_r);
+ }
+}
+
+/**
+ * cryp_restore_device_context - Restore hardware registers and
+ * other device context parameter
+ * @device_data: Pointer to the device data struct for base address.
+ * @ctx: Crypto device context
+ */
+void cryp_restore_device_context(struct cryp_device_data *device_data,
+ struct cryp_device_context *ctx)
+{
+ struct cryp_register *reg = device_data->base;
+ struct cryp_config *config =
+ (struct cryp_config *)device_data->current_ctx;
+
+ /*
+ * Fall through for all items in switch statement. DES is captured in
+ * the default.
+ */
+ switch (config->keysize) {
+ case CRYP_KEY_SIZE_256:
+ writel_relaxed(ctx->key_4_l, ®->key_4_l);
+ writel_relaxed(ctx->key_4_r, ®->key_4_r);
+
+ case CRYP_KEY_SIZE_192:
+ writel_relaxed(ctx->key_3_l, ®->key_3_l);
+ writel_relaxed(ctx->key_3_r, ®->key_3_r);
+
+ case CRYP_KEY_SIZE_128:
+ writel_relaxed(ctx->key_2_l, ®->key_2_l);
+ writel_relaxed(ctx->key_2_r, ®->key_2_r);
+
+ default:
+ writel_relaxed(ctx->key_1_l, ®->key_1_l);
+ writel_relaxed(ctx->key_1_r, ®->key_1_r);
+ }
+
+ /* Restore IV for CBC mode for AES and DES. */
+ if (config->algomode == CRYP_ALGO_TDES_CBC ||
+ config->algomode == CRYP_ALGO_DES_CBC ||
+ config->algomode == CRYP_ALGO_AES_CBC) {
+ writel_relaxed(ctx->init_vect_0_l, ®->init_vect_0_l);
+ writel_relaxed(ctx->init_vect_0_r, ®->init_vect_0_r);
+ writel_relaxed(ctx->init_vect_1_l, ®->init_vect_1_l);
+ writel_relaxed(ctx->init_vect_1_r, ®->init_vect_1_r);
+ }
+}
diff --git a/drivers/crypto/ux500/cryp/cryp.h b/drivers/crypto/ux500/cryp/cryp.h
new file mode 100644
index 0000000..14cfd05
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/cryp.h
@@ -0,0 +1,308 @@
+/**
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
+ * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
+ * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
+ * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#ifndef _CRYP_H_
+#define _CRYP_H_
+
+#include <linux/completion.h>
+#include <linux/dmaengine.h>
+#include <linux/klist.h>
+#include <linux/mutex.h>
+
+#define DEV_DBG_NAME "crypX crypX:"
+
+/* CRYP enable/disable */
+enum cryp_crypen {
+ CRYP_CRYPEN_DISABLE = 0,
+ CRYP_CRYPEN_ENABLE = 1
+};
+
+/* CRYP Start Computation enable/disable */
+enum cryp_start {
+ CRYP_START_DISABLE = 0,
+ CRYP_START_ENABLE = 1
+};
+
+/* CRYP Init Signal enable/disable */
+enum cryp_init {
+ CRYP_INIT_DISABLE = 0,
+ CRYP_INIT_ENABLE = 1
+};
+
+/* Cryp State enable/disable */
+enum cryp_state {
+ CRYP_STATE_DISABLE = 0,
+ CRYP_STATE_ENABLE = 1
+};
+
+/* Key preparation bit enable */
+enum cryp_key_prep {
+ KSE_DISABLED = 0,
+ KSE_ENABLED = 1
+};
+
+/* Key size for AES */
+#define CRYP_KEY_SIZE_128 (0)
+#define CRYP_KEY_SIZE_192 (1)
+#define CRYP_KEY_SIZE_256 (2)
+
+/* AES modes */
+enum cryp_algo_mode {
+ CRYP_ALGO_TDES_ECB,
+ CRYP_ALGO_TDES_CBC,
+ CRYP_ALGO_DES_ECB,
+ CRYP_ALGO_DES_CBC,
+ CRYP_ALGO_AES_ECB,
+ CRYP_ALGO_AES_CBC,
+ CRYP_ALGO_AES_CTR,
+ CRYP_ALGO_AES_XTS
+};
+
+/* Cryp Encryption or Decryption */
+enum cryp_algorithm_dir {
+ CRYP_ALGORITHM_ENCRYPT,
+ CRYP_ALGORITHM_DECRYPT
+};
+
+/* Hardware access method */
+enum cryp_mode {
+ CRYP_MODE_POLLING,
+ CRYP_MODE_INTERRUPT,
+ CRYP_MODE_DMA
+};
+
+/**
+ * struct cryp_config -
+ * @keysize: Key size for AES
+ * @algomode: AES modes
+ * @algodir: Cryp Encryption or Decryption
+ *
+ * CRYP configuration structure to be passed to set configuration
+ */
+struct cryp_config {
+ int keysize;
+ enum cryp_algo_mode algomode;
+ enum cryp_algorithm_dir algodir;
+};
+
+/**
+ * struct cryp_protection_config -
+ * @privilege_access: Privileged cryp state enable/disable
+ * @secure_access: Secure cryp state enable/disable
+ *
+ * Protection configuration structure for setting privilage access
+ */
+struct cryp_protection_config {
+ enum cryp_state privilege_access;
+ enum cryp_state secure_access;
+};
+
+/* Cryp status */
+enum cryp_status_id {
+ CRYP_STATUS_BUSY = 0x10,
+ CRYP_STATUS_OUTPUT_FIFO_FULL = 0x08,
+ CRYP_STATUS_OUTPUT_FIFO_NOT_EMPTY = 0x04,
+ CRYP_STATUS_INPUT_FIFO_NOT_FULL = 0x02,
+ CRYP_STATUS_INPUT_FIFO_EMPTY = 0x01
+};
+
+/* Cryp DMA interface */
+enum cryp_dma_req_type {
+ CRYP_DMA_DISABLE_BOTH,
+ CRYP_DMA_ENABLE_IN_DATA,
+ CRYP_DMA_ENABLE_OUT_DATA,
+ CRYP_DMA_ENABLE_BOTH_DIRECTIONS
+};
+
+enum cryp_dma_channel {
+ CRYP_DMA_RX = 0,
+ CRYP_DMA_TX
+};
+
+/* Key registers */
+enum cryp_key_reg_index {
+ CRYP_KEY_REG_1,
+ CRYP_KEY_REG_2,
+ CRYP_KEY_REG_3,
+ CRYP_KEY_REG_4
+};
+
+/* Key register left and right */
+struct cryp_key_value {
+ u32 key_value_left;
+ u32 key_value_right;
+};
+
+/* Cryp Initialization structure */
+enum cryp_init_vector_index {
+ CRYP_INIT_VECTOR_INDEX_0,
+ CRYP_INIT_VECTOR_INDEX_1
+};
+
+/* struct cryp_init_vector_value -
+ * @init_value_left
+ * @init_value_right
+ * */
+struct cryp_init_vector_value {
+ u32 init_value_left;
+ u32 init_value_right;
+};
+
+/**
+ * struct cryp_device_context - structure for a cryp context.
+ * @cr: control register
+ * @dmacr: DMA control register
+ * @imsc: Interrupt mask set/clear register
+ * @key_1_l: Key 1l register
+ * @key_1_r: Key 1r register
+ * @key_2_l: Key 2l register
+ * @key_2_r: Key 2r register
+ * @key_3_l: Key 3l register
+ * @key_3_r: Key 3r register
+ * @key_4_l: Key 4l register
+ * @key_4_r: Key 4r register
+ * @init_vect_0_l: Initialization vector 0l register
+ * @init_vect_0_r: Initialization vector 0r register
+ * @init_vect_1_l: Initialization vector 1l register
+ * @init_vect_1_r: Initialization vector 0r register
+ * @din: Data in register
+ * @dout: Data out register
+ *
+ * CRYP power management specifc structure.
+ */
+struct cryp_device_context {
+ u32 cr;
+ u32 dmacr;
+ u32 imsc;
+
+ u32 key_1_l;
+ u32 key_1_r;
+ u32 key_2_l;
+ u32 key_2_r;
+ u32 key_3_l;
+ u32 key_3_r;
+ u32 key_4_l;
+ u32 key_4_r;
+
+ u32 init_vect_0_l;
+ u32 init_vect_0_r;
+ u32 init_vect_1_l;
+ u32 init_vect_1_r;
+
+ u32 din;
+ u32 dout;
+};
+
+struct cryp_dma {
+ dma_cap_mask_t mask;
+ struct completion cryp_dma_complete;
+ struct dma_chan *chan_cryp2mem;
+ struct dma_chan *chan_mem2cryp;
+ struct stedma40_chan_cfg *cfg_cryp2mem;
+ struct stedma40_chan_cfg *cfg_mem2cryp;
+ int sg_src_len;
+ int sg_dst_len;
+ struct scatterlist *sg_src;
+ struct scatterlist *sg_dst;
+ int nents_src;
+ int nents_dst;
+};
+
+/**
+ * struct cryp_device_data - structure for a cryp device.
+ * @base: Pointer to the hardware base address.
+ * @dev: Pointer to the devices dev structure.
+ * @clk: Pointer to the device's clock control.
+ * @pwr_regulator: Pointer to the device's power control.
+ * @power_status: Current status of the power.
+ * @ctx_lock: Lock for current_ctx.
+ * @current_ctx: Pointer to the currently allocated context.
+ * @list_node: For inclusion into a klist.
+ * @dma: The dma structure holding channel configuration.
+ * @power_state: TRUE = power state on, FALSE = power state off.
+ * @power_state_spinlock: Spinlock for power_state.
+ * @restore_dev_ctx: TRUE = saved ctx, FALSE = no saved ctx.
+ */
+struct cryp_device_data {
+ struct cryp_register __iomem *base;
+ struct device *dev;
+ struct clk *clk;
+ struct regulator *pwr_regulator;
+ int power_status;
+ struct spinlock ctx_lock;
+ struct cryp_ctx *current_ctx;
+ struct klist_node list_node;
+ struct cryp_dma dma;
+ bool power_state;
+ struct spinlock power_state_spinlock;
+ bool restore_dev_ctx;
+};
+
+void cryp_wait_until_done(struct cryp_device_data *device_data);
+
+/* Initialization functions */
+
+int cryp_check(struct cryp_device_data *device_data);
+
+void cryp_activity(struct cryp_device_data *device_data,
+ enum cryp_crypen cryp_crypen);
+
+void cryp_flush_inoutfifo(struct cryp_device_data *device_data);
+
+int cryp_set_configuration(struct cryp_device_data *device_data,
+ struct cryp_config *cryp_config,
+ u32 *control_register);
+
+void cryp_configure_for_dma(struct cryp_device_data *device_data,
+ enum cryp_dma_req_type dma_req);
+
+int cryp_configure_key_values(struct cryp_device_data *device_data,
+ enum cryp_key_reg_index key_reg_index,
+ struct cryp_key_value key_value);
+
+int cryp_configure_init_vector(struct cryp_device_data *device_data,
+ enum cryp_init_vector_index
+ init_vector_index,
+ struct cryp_init_vector_value
+ init_vector_value);
+
+int cryp_configure_protection(struct cryp_device_data *device_data,
+ struct cryp_protection_config *p_protect_config);
+
+/* Power management funtions */
+void cryp_save_device_context(struct cryp_device_data *device_data,
+ struct cryp_device_context *ctx,
+ int cryp_mode);
+
+void cryp_restore_device_context(struct cryp_device_data *device_data,
+ struct cryp_device_context *ctx);
+
+/* Data transfer and status bits. */
+int cryp_is_logic_busy(struct cryp_device_data *device_data);
+
+int cryp_get_status(struct cryp_device_data *device_data);
+
+/**
+ * cryp_write_indata - This routine writes 32 bit data into the data input
+ * register of the cryptography IP.
+ * @device_data: Pointer to the device data struct for base address.
+ * @write_data: Data to write.
+ */
+int cryp_write_indata(struct cryp_device_data *device_data, u32 write_data);
+
+/**
+ * cryp_read_outdata - This routine reads the data from the data output
+ * register of the CRYP logic
+ * @device_data: Pointer to the device data struct for base address.
+ * @read_data: Read the data from the output FIFO.
+ */
+int cryp_read_outdata(struct cryp_device_data *device_data, u32 *read_data);
+
+#endif /* _CRYP_H_ */
diff --git a/drivers/crypto/ux500/cryp/cryp_core.c b/drivers/crypto/ux500/cryp/cryp_core.c
new file mode 100644
index 0000000..7051e00
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/cryp_core.c
@@ -0,0 +1,1785 @@
+/**
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
+ * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
+ * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
+ * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
+ * Author: Andreas Westin <andreas.westin@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/clk.h>
+#include <linux/completion.h>
+#include <linux/crypto.h>
+#include <linux/dmaengine.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irqreturn.h>
+#include <linux/klist.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/semaphore.h>
+
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/ctr.h>
+#include <crypto/des.h>
+#include <crypto/scatterwalk.h>
+
+#include <plat/ste_dma40.h>
+
+#include <mach/crypto-ux500.h>
+#include <mach/hardware.h>
+
+#include "cryp_p.h"
+#include "cryp.h"
+
+#define CRYP_MAX_KEY_SIZE 32
+#define BYTES_PER_WORD 4
+
+static int cryp_mode;
+static atomic_t session_id;
+
+static struct stedma40_chan_cfg *mem_to_engine;
+static struct stedma40_chan_cfg *engine_to_mem;
+
+/**
+ * struct cryp_driver_data - data specific to the driver.
+ *
+ * @device_list: A list of registered devices to choose from.
+ * @device_allocation: A semaphore initialized with number of devices.
+ */
+struct cryp_driver_data {
+ struct klist device_list;
+ struct semaphore device_allocation;
+};
+
+/**
+ * struct cryp_ctx - Crypto context
+ * @config: Crypto mode.
+ * @key[CRYP_MAX_KEY_SIZE]: Key.
+ * @keylen: Length of key.
+ * @iv: Pointer to initialization vector.
+ * @indata: Pointer to indata.
+ * @outdata: Pointer to outdata.
+ * @datalen: Length of indata.
+ * @outlen: Length of outdata.
+ * @blocksize: Size of blocks.
+ * @updated: Updated flag.
+ * @dev_ctx: Device dependent context.
+ * @device: Pointer to the device.
+ */
+struct cryp_ctx {
+ struct cryp_config config;
+ u8 key[CRYP_MAX_KEY_SIZE];
+ u32 keylen;
+ u8 *iv;
+ const u8 *indata;
+ u8 *outdata;
+ u32 datalen;
+ u32 outlen;
+ u32 blocksize;
+ u8 updated;
+ struct cryp_device_context dev_ctx;
+ struct cryp_device_data *device;
+ u32 session_id;
+};
+
+static struct cryp_driver_data driver_data;
+
+/**
+ * uint8p_to_uint32_be - 4*uint8 to uint32 big endian
+ * @in: Data to convert.
+ */
+static inline u32 uint8p_to_uint32_be(u8 *in)
+{
+ u32 *data = (u32 *)in;
+
+ return cpu_to_be32p(data);
+}
+
+/**
+ * swap_bits_in_byte - mirror the bits in a byte
+ * @b: the byte to be mirrored
+ *
+ * The bits are swapped the following way:
+ * Byte b include bits 0-7, nibble 1 (n1) include bits 0-3 and
+ * nibble 2 (n2) bits 4-7.
+ *
+ * Nibble 1 (n1):
+ * (The "old" (moved) bit is replaced with a zero)
+ * 1. Move bit 6 and 7, 4 positions to the left.
+ * 2. Move bit 3 and 5, 2 positions to the left.
+ * 3. Move bit 1-4, 1 position to the left.
+ *
+ * Nibble 2 (n2):
+ * 1. Move bit 0 and 1, 4 positions to the right.
+ * 2. Move bit 2 and 4, 2 positions to the right.
+ * 3. Move bit 3-6, 1 position to the right.
+ *
+ * Combine the two nibbles to a complete and swapped byte.
+ */
+
+static inline u8 swap_bits_in_byte(u8 b)
+{
+#define R_SHIFT_4_MASK 0xc0 /* Bits 6 and 7, right shift 4 */
+#define R_SHIFT_2_MASK 0x28 /* (After right shift 4) Bits 3 and 5,
+ right shift 2 */
+#define R_SHIFT_1_MASK 0x1e /* (After right shift 2) Bits 1-4,
+ right shift 1 */
+#define L_SHIFT_4_MASK 0x03 /* Bits 0 and 1, left shift 4 */
+#define L_SHIFT_2_MASK 0x14 /* (After left shift 4) Bits 2 and 4,
+ left shift 2 */
+#define L_SHIFT_1_MASK 0x78 /* (After left shift 1) Bits 3-6,
+ left shift 1 */
+
+ u8 n1;
+ u8 n2;
+
+ /* Swap most significant nibble */
+ /* Right shift 4, bits 6 and 7 */
+ n1 = ((b & R_SHIFT_4_MASK) >> 4) | (b & ~(R_SHIFT_4_MASK >> 4));
+ /* Right shift 2, bits 3 and 5 */
+ n1 = ((n1 & R_SHIFT_2_MASK) >> 2) | (n1 & ~(R_SHIFT_2_MASK >> 2));
+ /* Right shift 1, bits 1-4 */
+ n1 = (n1 & R_SHIFT_1_MASK) >> 1;
+
+ /* Swap least significant nibble */
+ /* Left shift 4, bits 0 and 1 */
+ n2 = ((b & L_SHIFT_4_MASK) << 4) | (b & ~(L_SHIFT_4_MASK << 4));
+ /* Left shift 2, bits 2 and 4 */
+ n2 = ((n2 & L_SHIFT_2_MASK) << 2) | (n2 & ~(L_SHIFT_2_MASK << 2));
+ /* Left shift 1, bits 3-6 */
+ n2 = (n2 & L_SHIFT_1_MASK) << 1;
+
+ return n1 | n2;
+}
+
+static inline void swap_words_in_key_and_bits_in_byte(const u8 *in,
+ u8 *out, u32 len)
+{
+ unsigned int i = 0;
+ int j;
+ int index = 0;
+
+ j = len - BYTES_PER_WORD;
+ while (j >= 0) {
+ for (i = 0; i < BYTES_PER_WORD; i++) {
+ index = len - j - BYTES_PER_WORD + i;
+ out[j + i] =
+ swap_bits_in_byte(in[index]);
+ }
+ j -= BYTES_PER_WORD;
+ }
+}
+
+static void add_session_id(struct cryp_ctx *ctx)
+{
+ /*
+ * We never want 0 to be a valid value, since this is the default value
+ * for the software context.
+ */
+ if (unlikely(atomic_inc_and_test(&session_id)))
+ atomic_inc(&session_id);
+
+ ctx->session_id = atomic_read(&session_id);
+}
+
+static irqreturn_t cryp_interrupt_handler(int irq, void *param)
+{
+ struct cryp_ctx *ctx;
+ int i;
+ struct cryp_device_data *device_data;
+
+ if (param == NULL) {
+ BUG_ON(!param);
+ return IRQ_HANDLED;
+ }
+
+ /* The device is coming from the one found in hw_crypt_noxts. */
+ device_data = (struct cryp_device_data *)param;
+
+ ctx = device_data->current_ctx;
+
+ if (ctx == NULL) {
+ BUG_ON(!ctx);
+ return IRQ_HANDLED;
+ }
+
+ dev_dbg(ctx->device->dev, "[%s] (len: %d) %s, ", __func__, ctx->outlen,
+ cryp_pending_irq_src(device_data, CRYP_IRQ_SRC_OUTPUT_FIFO) ?
+ "out" : "in");
+
+ if (cryp_pending_irq_src(device_data,
+ CRYP_IRQ_SRC_OUTPUT_FIFO)) {
+ if (ctx->outlen / ctx->blocksize > 0) {
+ for (i = 0; i < ctx->blocksize / 4; i++) {
+ *(ctx->outdata) = readl_relaxed(
+ &device_data->base->dout);
+ ctx->outdata += 4;
+ ctx->outlen -= 4;
+ }
+
+ if (ctx->outlen == 0) {
+ cryp_disable_irq_src(device_data,
+ CRYP_IRQ_SRC_OUTPUT_FIFO);
+ }
+ }
+ } else if (cryp_pending_irq_src(device_data,
+ CRYP_IRQ_SRC_INPUT_FIFO)) {
+ if (ctx->datalen / ctx->blocksize > 0) {
+ for (i = 0 ; i < ctx->blocksize / 4; i++) {
+ writel_relaxed(ctx->indata,
+ &device_data->base->din);
+ ctx->indata += 4;
+ ctx->datalen -= 4;
+ }
+
+ if (ctx->datalen == 0)
+ cryp_disable_irq_src(device_data,
+ CRYP_IRQ_SRC_INPUT_FIFO);
+
+ if (ctx->config.algomode == CRYP_ALGO_AES_XTS) {
+ CRYP_PUT_BITS(&device_data->base->cr,
+ CRYP_START_ENABLE,
+ CRYP_CR_START_POS,
+ CRYP_CR_START_MASK);
+
+ cryp_wait_until_done(device_data);
+ }
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int mode_is_aes(enum cryp_algo_mode mode)
+{
+ return CRYP_ALGO_AES_ECB == mode ||
+ CRYP_ALGO_AES_CBC == mode ||
+ CRYP_ALGO_AES_CTR == mode ||
+ CRYP_ALGO_AES_XTS == mode;
+}
+
+static int cfg_iv(struct cryp_device_data *device_data, u32 left, u32 right,
+ enum cryp_init_vector_index index)
+{
+ struct cryp_init_vector_value vector_value;
+
+ dev_dbg(device_data->dev, "[%s]", __func__);
+
+ vector_value.init_value_left = left;
+ vector_value.init_value_right = right;
+
+ return cryp_configure_init_vector(device_data,
+ index,
+ vector_value);
+}
+
+static int cfg_ivs(struct cryp_device_data *device_data, struct cryp_ctx *ctx)
+{
+ int i;
+ int status = 0;
+ int num_of_regs = ctx->blocksize / 8;
+ u32 iv[AES_BLOCK_SIZE / 4];
+
+ dev_dbg(device_data->dev, "[%s]", __func__);
+
+ /*
+ * Since we loop on num_of_regs we need to have a check in case
+ * someone provides an incorrect blocksize which would force calling
+ * cfg_iv with i greater than 2 which is an error.
+ */
+ if (num_of_regs > 2) {
+ dev_err(device_data->dev, "[%s] Incorrect blocksize %d",
+ __func__, ctx->blocksize);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ctx->blocksize / 4; i++)
+ iv[i] = uint8p_to_uint32_be(ctx->iv + i*4);
+
+ for (i = 0; i < num_of_regs; i++) {
+ status = cfg_iv(device_data, iv[i*2], iv[i*2+1],
+ (enum cryp_init_vector_index) i);
+ if (status != 0)
+ return status;
+ }
+ return status;
+}
+
+static int set_key(struct cryp_device_data *device_data,
+ u32 left_key,
+ u32 right_key,
+ enum cryp_key_reg_index index)
+{
+ struct cryp_key_value key_value;
+ int cryp_error;
+
+ dev_dbg(device_data->dev, "[%s]", __func__);
+
+ key_value.key_value_left = left_key;
+ key_value.key_value_right = right_key;
+
+ cryp_error = cryp_configure_key_values(device_data,
+ index,
+ key_value);
+ if (cryp_error != 0)
+ dev_err(device_data->dev, "[%s]: "
+ "cryp_configure_key_values() failed!", __func__);
+
+ return cryp_error;
+}
+
+static int cfg_keys(struct cryp_ctx *ctx)
+{
+ int i;
+ int num_of_regs = ctx->keylen / 8;
+ u32 swapped_key[CRYP_MAX_KEY_SIZE / 4];
+ int cryp_error = 0;
+
+ dev_dbg(ctx->device->dev, "[%s]", __func__);
+
+ if (mode_is_aes(ctx->config.algomode)) {
+ swap_words_in_key_and_bits_in_byte((u8 *)ctx->key,
+ (u8 *)swapped_key,
+ ctx->keylen);
+ } else {
+ for (i = 0; i < ctx->keylen / 4; i++)
+ swapped_key[i] = uint8p_to_uint32_be(ctx->key + i*4);
+ }
+
+ for (i = 0; i < num_of_regs; i++) {
+ cryp_error = set_key(ctx->device,
+ *(((u32 *)swapped_key)+i*2),
+ *(((u32 *)swapped_key)+i*2+1),
+ (enum cryp_key_reg_index) i);
+
+ if (cryp_error != 0) {
+ dev_err(ctx->device->dev, "[%s]: set_key() failed!",
+ __func__);
+ return cryp_error;
+ }
+ }
+ return cryp_error;
+}
+
+static int cryp_setup_context(struct cryp_ctx *ctx,
+ struct cryp_device_data *device_data)
+{
+ u32 control_register = CRYP_CR_DEFAULT;
+
+ switch (cryp_mode) {
+ case CRYP_MODE_INTERRUPT:
+ writel_relaxed(CRYP_IMSC_DEFAULT, &device_data->base->imsc);
+ break;
+
+ case CRYP_MODE_DMA:
+ writel_relaxed(CRYP_DMACR_DEFAULT, &device_data->base->dmacr);
+ break;
+
+ default:
+ break;
+ }
+
+ if (ctx->updated == 0) {
+ cryp_flush_inoutfifo(device_data);
+ if (cfg_keys(ctx) != 0) {
+ dev_err(ctx->device->dev, "[%s]: cfg_keys failed!",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (ctx->iv &&
+ CRYP_ALGO_AES_ECB != ctx->config.algomode &&
+ CRYP_ALGO_DES_ECB != ctx->config.algomode &&
+ CRYP_ALGO_TDES_ECB != ctx->config.algomode) {
+ if (cfg_ivs(device_data, ctx) != 0)
+ return -EPERM;
+ }
+
+ cryp_set_configuration(device_data, &ctx->config,
+ &control_register);
+ add_session_id(ctx);
+ } else if (ctx->updated == 1 &&
+ ctx->session_id != atomic_read(&session_id)) {
+ cryp_flush_inoutfifo(device_data);
+ cryp_restore_device_context(device_data, &ctx->dev_ctx);
+
+ add_session_id(ctx);
+ control_register = ctx->dev_ctx.cr;
+ } else
+ control_register = ctx->dev_ctx.cr;
+
+ writel(control_register |
+ (CRYP_CRYPEN_ENABLE << CRYP_CR_CRYPEN_POS),
+ &device_data->base->cr);
+
+ return 0;
+}
+
+static int cryp_get_device_data(struct cryp_ctx *ctx,
+ struct cryp_device_data **device_data)
+{
+ int ret;
+ struct klist_iter device_iterator;
+ struct klist_node *device_node;
+ struct cryp_device_data *local_device_data = NULL;
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ /* Wait until a device is available */
+ ret = down_interruptible(&driver_data.device_allocation);
+ if (ret)
+ return ret; /* Interrupted */
+
+ /* Select a device */
+ klist_iter_init(&driver_data.device_list, &device_iterator);
+
+ device_node = klist_next(&device_iterator);
+ while (device_node) {
+ local_device_data = container_of(device_node,
+ struct cryp_device_data, list_node);
+ spin_lock(&local_device_data->ctx_lock);
+ /* current_ctx allocates a device, NULL = unallocated */
+ if (local_device_data->current_ctx) {
+ device_node = klist_next(&device_iterator);
+ } else {
+ local_device_data->current_ctx = ctx;
+ ctx->device = local_device_data;
+ spin_unlock(&local_device_data->ctx_lock);
+ break;
+ }
+ spin_unlock(&local_device_data->ctx_lock);
+ }
+ klist_iter_exit(&device_iterator);
+
+ if (!device_node) {
+ /**
+ * No free device found.
+ * Since we allocated a device with down_interruptible, this
+ * should not be able to happen.
+ * Number of available devices, which are contained in
+ * device_allocation, is therefore decremented by not doing
+ * an up(device_allocation).
+ */
+ return -EBUSY;
+ }
+
+ *device_data = local_device_data;
+
+ return 0;
+}
+
+static void cryp_dma_setup_channel(struct cryp_device_data *device_data,
+ struct device *dev)
+{
+ dma_cap_zero(device_data->dma.mask);
+ dma_cap_set(DMA_SLAVE, device_data->dma.mask);
+
+ device_data->dma.cfg_mem2cryp = mem_to_engine;
+ device_data->dma.chan_mem2cryp =
+ dma_request_channel(device_data->dma.mask,
+ stedma40_filter,
+ device_data->dma.cfg_mem2cryp);
+
+ device_data->dma.cfg_cryp2mem = engine_to_mem;
+ device_data->dma.chan_cryp2mem =
+ dma_request_channel(device_data->dma.mask,
+ stedma40_filter,
+ device_data->dma.cfg_cryp2mem);
+
+ init_completion(&device_data->dma.cryp_dma_complete);
+}
+
+static void cryp_dma_out_callback(void *data)
+{
+ struct cryp_ctx *ctx = (struct cryp_ctx *) data;
+ dev_dbg(ctx->device->dev, "[%s]: ", __func__);
+
+ complete(&ctx->device->dma.cryp_dma_complete);
+}
+
+static int cryp_set_dma_transfer(struct cryp_ctx *ctx,
+ struct scatterlist *sg,
+ int len,
+ enum dma_data_direction direction)
+{
+ struct dma_async_tx_descriptor *desc;
+ struct dma_chan *channel = NULL;
+ dma_cookie_t cookie;
+
+ dev_dbg(ctx->device->dev, "[%s]: ", __func__);
+
+ if (unlikely(!IS_ALIGNED((u32)sg, 4))) {
+ dev_err(ctx->device->dev, "[%s]: Data in sg list isn't "
+ "aligned! Addr: 0x%08x", __func__, (u32)sg);
+ return -EFAULT;
+ }
+
+ switch (direction) {
+ case DMA_TO_DEVICE:
+ channel = ctx->device->dma.chan_mem2cryp;
+ ctx->device->dma.sg_src = sg;
+ ctx->device->dma.sg_src_len = dma_map_sg(channel->device->dev,
+ ctx->device->dma.sg_src,
+ ctx->device->dma.nents_src,
+ direction);
+
+ if (!ctx->device->dma.sg_src_len) {
+ dev_dbg(ctx->device->dev,
+ "[%s]: Could not map the sg list (TO_DEVICE)",
+ __func__);
+ return -EFAULT;
+ }
+
+ dev_dbg(ctx->device->dev, "[%s]: Setting up DMA for buffer "
+ "(TO_DEVICE)", __func__);
+
+ desc = channel->device->device_prep_slave_sg(channel,
+ ctx->device->dma.sg_src,
+ ctx->device->dma.sg_src_len,
+ direction,
+ DMA_CTRL_ACK);
+ break;
+
+ case DMA_FROM_DEVICE:
+ channel = ctx->device->dma.chan_cryp2mem;
+ ctx->device->dma.sg_dst = sg;
+ ctx->device->dma.sg_dst_len = dma_map_sg(channel->device->dev,
+ ctx->device->dma.sg_dst,
+ ctx->device->dma.nents_dst,
+ direction);
+
+ if (!ctx->device->dma.sg_dst_len) {
+ dev_dbg(ctx->device->dev,
+ "[%s]: Could not map the sg list (FROM_DEVICE)",
+ __func__);
+ return -EFAULT;
+ }
+
+ dev_dbg(ctx->device->dev, "[%s]: Setting up DMA for buffer "
+ "(FROM_DEVICE)", __func__);
+
+ desc = channel->device->device_prep_slave_sg(channel,
+ ctx->device->dma.sg_dst,
+ ctx->device->dma.sg_dst_len,
+ direction,
+ DMA_CTRL_ACK |
+ DMA_PREP_INTERRUPT);
+
+ desc->callback = cryp_dma_out_callback;
+ desc->callback_param = ctx;
+ break;
+
+ default:
+ dev_dbg(ctx->device->dev, "[%s]: Invalid DMA direction",
+ __func__);
+ return -EFAULT;
+ }
+
+ cookie = desc->tx_submit(desc);
+ dma_async_issue_pending(channel);
+
+ return 0;
+}
+
+static void cryp_dma_done(struct cryp_ctx *ctx)
+{
+ struct dma_chan *chan;
+
+ dev_dbg(ctx->device->dev, "[%s]: ", __func__);
+
+ chan = ctx->device->dma.chan_mem2cryp;
+ chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
+ dma_unmap_sg(chan->device->dev, ctx->device->dma.sg_src,
+ ctx->device->dma.sg_src_len, DMA_TO_DEVICE);
+
+ chan = ctx->device->dma.chan_cryp2mem;
+ chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
+ dma_unmap_sg(chan->device->dev, ctx->device->dma.sg_dst,
+ ctx->device->dma.sg_dst_len, DMA_FROM_DEVICE);
+}
+
+static int cryp_dma_write(struct cryp_ctx *ctx, struct scatterlist *sg,
+ int len)
+{
+ int error = cryp_set_dma_transfer(ctx, sg, len, DMA_TO_DEVICE);
+ dev_dbg(ctx->device->dev, "[%s]: ", __func__);
+
+ if (error) {
+ dev_dbg(ctx->device->dev, "[%s]: cryp_set_dma_transfer() "
+ "failed", __func__);
+ return error;
+ }
+
+ return len;
+}
+
+static int cryp_dma_read(struct cryp_ctx *ctx, struct scatterlist *sg, int len)
+{
+ int error = cryp_set_dma_transfer(ctx, sg, len, DMA_FROM_DEVICE);
+ if (error) {
+ dev_dbg(ctx->device->dev, "[%s]: cryp_set_dma_transfer() "
+ "failed", __func__);
+ return error;
+ }
+
+ return len;
+}
+
+static void cryp_polling_mode(struct cryp_ctx *ctx,
+ struct cryp_device_data *device_data)
+{
+ int len = ctx->blocksize / BYTES_PER_WORD;
+ int remaining_length = ctx->datalen;
+ u32 *indata = (u32 *)ctx->indata;
+ u32 *outdata = (u32 *)ctx->outdata;
+
+ while (remaining_length > 0) {
+ writesl(&device_data->base->din, indata, len);
+ indata += len;
+ remaining_length -= (len * BYTES_PER_WORD);
+ cryp_wait_until_done(device_data);
+
+ readsl(&device_data->base->dout, outdata, len);
+ outdata += len;
+ cryp_wait_until_done(device_data);
+ }
+}
+
+static int cryp_disable_power(struct device *dev,
+ struct cryp_device_data *device_data,
+ bool save_device_context)
+{
+ int ret = 0;
+
+ dev_dbg(dev, "[%s]", __func__);
+
+ spin_lock(&device_data->power_state_spinlock);
+ if (!device_data->power_state)
+ goto out;
+
+ spin_lock(&device_data->ctx_lock);
+ if (save_device_context && device_data->current_ctx) {
+ cryp_save_device_context(device_data,
+ &device_data->current_ctx->dev_ctx,
+ cryp_mode);
+ device_data->restore_dev_ctx = true;
+ }
+ spin_unlock(&device_data->ctx_lock);
+
+ clk_disable(device_data->clk);
+ ret = regulator_disable(device_data->pwr_regulator);
+ if (ret)
+ dev_err(dev, "[%s]: "
+ "regulator_disable() failed!",
+ __func__);
+
+ device_data->power_state = false;
+
+out:
+ spin_unlock(&device_data->power_state_spinlock);
+
+ return ret;
+}
+
+static int cryp_enable_power(
+ struct device *dev,
+ struct cryp_device_data *device_data,
+ bool restore_device_context)
+{
+ int ret = 0;
+
+ dev_dbg(dev, "[%s]", __func__);
+
+ spin_lock(&device_data->power_state_spinlock);
+ if (!device_data->power_state) {
+ ret = regulator_enable(device_data->pwr_regulator);
+ if (ret) {
+ dev_err(dev, "[%s]: regulator_enable() failed!",
+ __func__);
+ goto out;
+ }
+
+ ret = clk_enable(device_data->clk);
+ if (ret) {
+ dev_err(dev, "[%s]: clk_enable() failed!",
+ __func__);
+ regulator_disable(device_data->pwr_regulator);
+ goto out;
+ }
+ device_data->power_state = true;
+ }
+
+ if (device_data->restore_dev_ctx) {
+ spin_lock(&device_data->ctx_lock);
+ if (restore_device_context && device_data->current_ctx) {
+ device_data->restore_dev_ctx = false;
+ cryp_restore_device_context(device_data,
+ &device_data->current_ctx->dev_ctx);
+ }
+ spin_unlock(&device_data->ctx_lock);
+ }
+out:
+ spin_unlock(&device_data->power_state_spinlock);
+
+ return ret;
+}
+
+static int hw_crypt_noxts(struct cryp_ctx *ctx,
+ struct cryp_device_data *device_data)
+{
+ int ret = 0;
+
+ const u8 *indata = ctx->indata;
+ u8 *outdata = ctx->outdata;
+ u32 datalen = ctx->datalen;
+ u32 outlen = datalen;
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ ctx->outlen = ctx->datalen;
+
+ if (unlikely(!IS_ALIGNED((u32)indata, 4))) {
+ pr_debug(DEV_DBG_NAME " [%s]: Data isn't aligned! Addr: "
+ "0x%08x", __func__, (u32)indata);
+ return -EINVAL;
+ }
+
+ ret = cryp_setup_context(ctx, device_data);
+
+ if (ret)
+ goto out;
+
+ if (cryp_mode == CRYP_MODE_INTERRUPT) {
+ cryp_enable_irq_src(device_data, CRYP_IRQ_SRC_INPUT_FIFO |
+ CRYP_IRQ_SRC_OUTPUT_FIFO);
+
+ /*
+ * ctx->outlen is decremented in the cryp_interrupt_handler
+ * function. We had to add cpu_relax() (barrier) to make sure
+ * that gcc didn't optimze away this variable.
+ */
+ while (ctx->outlen > 0)
+ cpu_relax();
+ } else if (cryp_mode == CRYP_MODE_POLLING ||
+ cryp_mode == CRYP_MODE_DMA) {
+ /*
+ * The reason for having DMA in this if case is that if we are
+ * running cryp_mode = 2, then we separate DMA routines for
+ * handling cipher/plaintext > blocksize, except when
+ * running the normal CRYPTO_ALG_TYPE_CIPHER, then we still use
+ * the polling mode. Overhead of doing DMA setup eats up the
+ * benefits using it.
+ */
+ cryp_polling_mode(ctx, device_data);
+ } else {
+ dev_err(ctx->device->dev, "[%s]: Invalid operation mode!",
+ __func__);
+ ret = -EPERM;
+ goto out;
+ }
+
+ cryp_save_device_context(device_data, &ctx->dev_ctx, cryp_mode);
+ ctx->updated = 1;
+
+out:
+ ctx->indata = indata;
+ ctx->outdata = outdata;
+ ctx->datalen = datalen;
+ ctx->outlen = outlen;
+
+ return ret;
+}
+
+static int get_nents(struct scatterlist *sg, int nbytes)
+{
+ int nents = 0;
+
+ while (nbytes > 0) {
+ nbytes -= sg->length;
+ sg = scatterwalk_sg_next(sg);
+ nents++;
+ }
+
+ return nents;
+}
+
+static int ablk_dma_crypt(struct ablkcipher_request *areq)
+{
+ struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq);
+ struct cryp_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+ struct cryp_device_data *device_data;
+
+ int bytes_written = 0;
+ int bytes_read = 0;
+ int ret;
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ ctx->datalen = areq->nbytes;
+ ctx->outlen = areq->nbytes;
+
+ ret = cryp_get_device_data(ctx, &device_data);
+ if (ret)
+ return ret;
+
+ ret = cryp_setup_context(ctx, device_data);
+ if (ret)
+ goto out;
+
+ /* We have the device now, so store the nents in the dma struct. */
+ ctx->device->dma.nents_src = get_nents(areq->src, ctx->datalen);
+ ctx->device->dma.nents_dst = get_nents(areq->dst, ctx->outlen);
+
+ /* Enable DMA in- and output. */
+ cryp_configure_for_dma(device_data, CRYP_DMA_ENABLE_BOTH_DIRECTIONS);
+
+ bytes_written = cryp_dma_write(ctx, areq->src, ctx->datalen);
+ bytes_read = cryp_dma_read(ctx, areq->dst, bytes_written);
+
+ wait_for_completion(&ctx->device->dma.cryp_dma_complete);
+ cryp_dma_done(ctx);
+
+ cryp_save_device_context(device_data, &ctx->dev_ctx, cryp_mode);
+ ctx->updated = 1;
+
+out:
+ spin_lock(&device_data->ctx_lock);
+ device_data->current_ctx = NULL;
+ ctx->device = NULL;
+ spin_unlock(&device_data->ctx_lock);
+
+ /*
+ * The down_interruptible part for this semaphore is called in
+ * cryp_get_device_data.
+ */
+ up(&driver_data.device_allocation);
+
+ if (unlikely(bytes_written != bytes_read))
+ return -EPERM;
+
+ return 0;
+}
+
+static int ablk_crypt(struct ablkcipher_request *areq)
+{
+ struct ablkcipher_walk walk;
+ struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq);
+ struct cryp_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+ struct cryp_device_data *device_data;
+ unsigned long src_paddr;
+ unsigned long dst_paddr;
+ int ret;
+ int nbytes;
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ ret = cryp_get_device_data(ctx, &device_data);
+ if (ret)
+ goto out;
+
+ ablkcipher_walk_init(&walk, areq->dst, areq->src, areq->nbytes);
+ ret = ablkcipher_walk_phys(areq, &walk);
+
+ if (ret) {
+ pr_err(DEV_DBG_NAME "[%s]: ablkcipher_walk_phys() failed!",
+ __func__);
+ goto out;
+ }
+
+ while ((nbytes = walk.nbytes) > 0) {
+ ctx->iv = walk.iv;
+ src_paddr = (page_to_phys(walk.src.page) + walk.src.offset);
+ ctx->indata = phys_to_virt(src_paddr);
+
+ dst_paddr = (page_to_phys(walk.dst.page) + walk.dst.offset);
+ ctx->outdata = phys_to_virt(dst_paddr);
+
+ ctx->datalen = nbytes - (nbytes % ctx->blocksize);
+
+ ret = hw_crypt_noxts(ctx, device_data);
+ if (ret)
+ goto out;
+
+ nbytes -= ctx->datalen;
+ ret = ablkcipher_walk_done(areq, &walk, nbytes);
+ if (ret)
+ goto out;
+ }
+ ablkcipher_walk_complete(&walk);
+
+out:
+ /* Release the device */
+ spin_lock(&device_data->ctx_lock);
+ device_data->current_ctx = NULL;
+ ctx->device = NULL;
+ spin_unlock(&device_data->ctx_lock);
+
+ /*
+ * The down_interruptible part for this semaphore is called in
+ * cryp_get_device_data.
+ */
+ up(&driver_data.device_allocation);
+
+ return ret;
+}
+
+static int aes_ablkcipher_setkey(struct crypto_ablkcipher *cipher,
+ const u8 *key, unsigned int keylen)
+{
+ struct cryp_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+ u32 *flags = &cipher->base.crt_flags;
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ ctx->config.keysize = CRYP_KEY_SIZE_128;
+ break;
+
+ case AES_KEYSIZE_192:
+ ctx->config.keysize = CRYP_KEY_SIZE_192;
+ break;
+
+ case AES_KEYSIZE_256:
+ ctx->config.keysize = CRYP_KEY_SIZE_256;
+ break;
+
+ default:
+ pr_err(DEV_DBG_NAME "[%s]: Unknown keylen!", __func__);
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+ return -EINVAL;
+ }
+
+ memcpy(ctx->key, key, keylen);
+ ctx->keylen = keylen;
+
+ ctx->updated = 0;
+
+ return 0;
+}
+
+static int des_ablkcipher_setkey(struct crypto_ablkcipher *cipher,
+ const u8 *key, unsigned int keylen)
+{
+ struct cryp_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+ u32 *flags = &cipher->base.crt_flags;
+ u32 tmp[DES_EXPKEY_WORDS];
+ int ret;
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+ if (keylen != DES_KEY_SIZE) {
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+ pr_debug(DEV_DBG_NAME " [%s]: CRYPTO_TFM_RES_BAD_KEY_LEN",
+ __func__);
+ return -EINVAL;
+ }
+
+ ret = des_ekey(tmp, key);
+ if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
+ *flags |= CRYPTO_TFM_RES_WEAK_KEY;
+ pr_debug(DEV_DBG_NAME " [%s]: CRYPTO_TFM_REQ_WEAK_KEY",
+ __func__);
+ return -EINVAL;
+ }
+
+ memcpy(ctx->key, key, keylen);
+ ctx->keylen = keylen;
+
+ ctx->updated = 0;
+ return 0;
+}
+
+static int des3_ablkcipher_setkey(struct crypto_ablkcipher *cipher,
+ const u8 *key, unsigned int keylen)
+{
+ struct cryp_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+ u32 *flags = &cipher->base.crt_flags;
+ const u32 *K = (const u32 *)key;
+ u32 tmp[DES3_EDE_EXPKEY_WORDS];
+ int i, ret;
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+ if (keylen != DES3_EDE_KEY_SIZE) {
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+ pr_debug(DEV_DBG_NAME " [%s]: CRYPTO_TFM_RES_BAD_KEY_LEN",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* Checking key interdependency for weak key detection. */
+ if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
+ !((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
+ (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
+ *flags |= CRYPTO_TFM_RES_WEAK_KEY;
+ pr_debug(DEV_DBG_NAME " [%s]: CRYPTO_TFM_REQ_WEAK_KEY",
+ __func__);
+ return -EINVAL;
+ }
+ for (i = 0; i < 3; i++) {
+ ret = des_ekey(tmp, key + i*DES_KEY_SIZE);
+ if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
+ *flags |= CRYPTO_TFM_RES_WEAK_KEY;
+ pr_debug(DEV_DBG_NAME " [%s]: "
+ "CRYPTO_TFM_REQ_WEAK_KEY", __func__);
+ return -EINVAL;
+ }
+ }
+
+ memcpy(ctx->key, key, keylen);
+ ctx->keylen = keylen;
+
+ ctx->updated = 0;
+ return 0;
+}
+
+static int cryp_blk_encrypt(struct ablkcipher_request *areq)
+{
+ struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq);
+ struct cryp_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ ctx->config.algodir = CRYP_ALGORITHM_ENCRYPT;
+
+ /*
+ * DMA does not work for DES due to a hw bug */
+ if (cryp_mode == CRYP_MODE_DMA && mode_is_aes(ctx->config.algomode))
+ return ablk_dma_crypt(areq);
+
+ /* For everything except DMA, we run the non DMA version. */
+ return ablk_crypt(areq);
+}
+
+static int cryp_blk_decrypt(struct ablkcipher_request *areq)
+{
+ struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq);
+ struct cryp_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ ctx->config.algodir = CRYP_ALGORITHM_DECRYPT;
+
+ /* DMA does not work for DES due to a hw bug */
+ if (cryp_mode == CRYP_MODE_DMA && mode_is_aes(ctx->config.algomode))
+ return ablk_dma_crypt(areq);
+
+ /* For everything except DMA, we run the non DMA version. */
+ return ablk_crypt(areq);
+}
+
+struct cryp_algo_template {
+ enum cryp_algo_mode algomode;
+ struct crypto_alg crypto;
+};
+
+static int cryp_cra_init(struct crypto_tfm *tfm)
+{
+ struct cryp_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct crypto_alg *alg = tfm->__crt_alg;
+ struct cryp_algo_template *cryp_alg = container_of(alg,
+ struct cryp_algo_template,
+ crypto);
+
+ ctx->config.algomode = cryp_alg->algomode;
+ ctx->blocksize = crypto_tfm_alg_blocksize(tfm);
+
+ return 0;
+}
+
+static struct cryp_algo_template cryp_algs[] = {
+ {
+ .algomode = CRYP_ALGO_AES_ECB,
+ .crypto = {
+ .cra_name = "aes",
+ .cra_driver_name = "aes-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = aes_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_AES_ECB,
+ .crypto = {
+ .cra_name = "ecb(aes)",
+ .cra_driver_name = "ecb-aes-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = aes_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt,
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_AES_CBC,
+ .crypto = {
+ .cra_name = "cbc(aes)",
+ .cra_driver_name = "cbc-aes-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = aes_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_AES_CTR,
+ .crypto = {
+ .cra_name = "ctr(aes)",
+ .cra_driver_name = "ctr-aes-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .setkey = aes_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_DES_ECB,
+ .crypto = {
+ .cra_name = "des",
+ .cra_driver_name = "des-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .setkey = des_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt
+ }
+ }
+ }
+
+ },
+ {
+ .algomode = CRYP_ALGO_TDES_ECB,
+ .crypto = {
+ .cra_name = "des3_ede",
+ .cra_driver_name = "des3_ede-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .setkey = des_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_DES_ECB,
+ .crypto = {
+ .cra_name = "ecb(des)",
+ .cra_driver_name = "ecb-des-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .setkey = des_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt,
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_TDES_ECB,
+ .crypto = {
+ .cra_name = "ecb(des3_ede)",
+ .cra_driver_name = "ecb-des3_ede-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .setkey = des3_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt,
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_DES_CBC,
+ .crypto = {
+ .cra_name = "cbc(des)",
+ .cra_driver_name = "cbc-des-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .setkey = des_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt,
+ }
+ }
+ }
+ },
+ {
+ .algomode = CRYP_ALGO_TDES_CBC,
+ .crypto = {
+ .cra_name = "cbc(des3_ede)",
+ .cra_driver_name = "cbc-des3_ede-ux500",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct cryp_ctx),
+ .cra_alignmask = 3,
+ .cra_type = &crypto_ablkcipher_type,
+ .cra_init = cryp_cra_init,
+ .cra_module = THIS_MODULE,
+ .cra_u = {
+ .ablkcipher = {
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .setkey = des3_ablkcipher_setkey,
+ .encrypt = cryp_blk_encrypt,
+ .decrypt = cryp_blk_decrypt,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ }
+ }
+ }
+ }
+};
+
+/**
+ * cryp_algs_register_all -
+ */
+static int cryp_algs_register_all(void)
+{
+ int ret;
+ int i;
+ int count;
+
+ pr_debug("[%s]", __func__);
+
+ for (i = 0; i < ARRAY_SIZE(cryp_algs); i++) {
+ ret = crypto_register_alg(&cryp_algs[i].crypto);
+ if (ret) {
+ count = i;
+ pr_err("[%s] alg registration failed",
+ cryp_algs[i].crypto.cra_driver_name);
+ goto unreg;
+ }
+ }
+ return 0;
+unreg:
+ for (i = 0; i < count; i++)
+ crypto_unregister_alg(&cryp_algs[i].crypto);
+ return ret;
+}
+
+/**
+ * cryp_algs_unregister_all -
+ */
+static void cryp_algs_unregister_all(void)
+{
+ int i;
+
+ pr_debug(DEV_DBG_NAME " [%s]", __func__);
+
+ for (i = 0; i < ARRAY_SIZE(cryp_algs); i++)
+ crypto_unregister_alg(&cryp_algs[i].crypto);
+}
+
+static int ux500_cryp_probe(struct platform_device *pdev)
+{
+ int ret;
+ int cryp_error = 0;
+ struct resource *res = NULL;
+ struct resource *res_irq = NULL;
+ struct cryp_device_data *device_data;
+ struct cryp_protection_config prot = {
+ .privilege_access = CRYP_STATE_ENABLE
+ };
+ struct device *dev = &pdev->dev;
+
+ dev_dbg(dev, "[%s]", __func__);
+ device_data = kzalloc(sizeof(struct cryp_device_data), GFP_ATOMIC);
+ if (!device_data) {
+ dev_err(dev, "[%s]: kzalloc() failed!", __func__);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ device_data->dev = dev;
+ device_data->current_ctx = NULL;
+
+ /* Grab the DMA configuration from platform data. */
+ mem_to_engine = &((struct cryp_platform_data *)
+ dev->platform_data)->mem_to_engine;
+ engine_to_mem = &((struct cryp_platform_data *)
+ dev->platform_data)->engine_to_mem;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "[%s]: platform_get_resource() failed",
+ __func__);
+ ret = -ENODEV;
+ goto out_kfree;
+ }
+
+ res = request_mem_region(res->start, resource_size(res), pdev->name);
+ if (res == NULL) {
+ dev_err(dev, "[%s]: request_mem_region() failed",
+ __func__);
+ ret = -EBUSY;
+ goto out_kfree;
+ }
+
+ device_data->base = ioremap(res->start, resource_size(res));
+ if (!device_data->base) {
+ dev_err(dev, "[%s]: ioremap failed!", __func__);
+ ret = -ENOMEM;
+ goto out_free_mem;
+ }
+
+ spin_lock_init(&device_data->ctx_lock);
+ spin_lock_init(&device_data->power_state_spinlock);
+
+ /* Enable power for CRYP hardware block */
+ device_data->pwr_regulator = regulator_get(&pdev->dev, "v-ape");
+ if (IS_ERR(device_data->pwr_regulator)) {
+ dev_err(dev, "[%s]: could not get cryp regulator", __func__);
+ ret = PTR_ERR(device_data->pwr_regulator);
+ device_data->pwr_regulator = NULL;
+ goto out_unmap;
+ }
+
+ /* Enable the clk for CRYP hardware block */
+ device_data->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(device_data->clk)) {
+ dev_err(dev, "[%s]: clk_get() failed!", __func__);
+ ret = PTR_ERR(device_data->clk);
+ goto out_regulator;
+ }
+
+ /* Enable device power (and clock) */
+ ret = cryp_enable_power(device_data->dev, device_data, false);
+ if (ret) {
+ dev_err(dev, "[%s]: cryp_enable_power() failed!", __func__);
+ goto out_clk;
+ }
+
+ cryp_error = cryp_check(device_data);
+ if (cryp_error != 0) {
+ dev_err(dev, "[%s]: cryp_init() failed!", __func__);
+ ret = -EINVAL;
+ goto out_power;
+ }
+
+ cryp_error = cryp_configure_protection(device_data, &prot);
+ if (cryp_error != 0) {
+ dev_err(dev, "[%s]: cryp_configure_protection() failed!",
+ __func__);
+ ret = -EINVAL;
+ goto out_power;
+ }
+
+ res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res_irq) {
+ dev_err(dev, "[%s]: IORESOURCE_IRQ unavailable",
+ __func__);
+ goto out_power;
+ }
+
+ ret = request_irq(res_irq->start,
+ cryp_interrupt_handler,
+ 0,
+ "cryp1",
+ device_data);
+ if (ret) {
+ dev_err(dev, "[%s]: Unable to request IRQ", __func__);
+ goto out_power;
+ }
+
+ if (cryp_mode == CRYP_MODE_DMA)
+ cryp_dma_setup_channel(device_data, dev);
+
+ platform_set_drvdata(pdev, device_data);
+
+ /* Put the new device into the device list... */
+ klist_add_tail(&device_data->list_node, &driver_data.device_list);
+
+ /* ... and signal that a new device is available. */
+ up(&driver_data.device_allocation);
+
+ atomic_set(&session_id, 1);
+
+ ret = cryp_algs_register_all();
+ if (ret) {
+ dev_err(dev, "[%s]: cryp_algs_register_all() failed!",
+ __func__);
+ goto out_power;
+ }
+
+ return 0;
+
+out_power:
+ cryp_disable_power(device_data->dev, device_data, false);
+
+out_clk:
+ clk_put(device_data->clk);
+
+out_regulator:
+ regulator_put(device_data->pwr_regulator);
+
+out_unmap:
+ iounmap(device_data->base);
+
+out_free_mem:
+ release_mem_region(res->start, resource_size(res));
+
+out_kfree:
+ kfree(device_data);
+out:
+ return ret;
+}
+
+static int ux500_cryp_remove(struct platform_device *pdev)
+{
+ struct resource *res = NULL;
+ struct resource *res_irq = NULL;
+ struct cryp_device_data *device_data;
+
+ dev_dbg(&pdev->dev, "[%s]", __func__);
+ device_data = platform_get_drvdata(pdev);
+ if (!device_data) {
+ dev_err(&pdev->dev, "[%s]: platform_get_drvdata() failed!",
+ __func__);
+ return -ENOMEM;
+ }
+
+ /* Try to decrease the number of available devices. */
+ if (down_trylock(&driver_data.device_allocation))
+ return -EBUSY;
+
+ /* Check that the device is free */
+ spin_lock(&device_data->ctx_lock);
+ /* current_ctx allocates a device, NULL = unallocated */
+ if (device_data->current_ctx) {
+ /* The device is busy */
+ spin_unlock(&device_data->ctx_lock);
+ /* Return the device to the pool. */
+ up(&driver_data.device_allocation);
+ return -EBUSY;
+ }
+
+ spin_unlock(&device_data->ctx_lock);
+
+ /* Remove the device from the list */
+ if (klist_node_attached(&device_data->list_node))
+ klist_remove(&device_data->list_node);
+
+ /* If this was the last device, remove the services */
+ if (list_empty(&driver_data.device_list.k_list))
+ cryp_algs_unregister_all();
+
+ res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res_irq)
+ dev_err(&pdev->dev, "[%s]: IORESOURCE_IRQ, unavailable",
+ __func__);
+ else {
+ disable_irq(res_irq->start);
+ free_irq(res_irq->start, device_data);
+ }
+
+ if (cryp_disable_power(&pdev->dev, device_data, false))
+ dev_err(&pdev->dev, "[%s]: cryp_disable_power() failed",
+ __func__);
+
+ clk_put(device_data->clk);
+ regulator_put(device_data->pwr_regulator);
+
+ iounmap(device_data->base);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res)
+ release_mem_region(res->start, res->end - res->start + 1);
+
+ kfree(device_data);
+
+ return 0;
+}
+
+static void ux500_cryp_shutdown(struct platform_device *pdev)
+{
+ struct resource *res_irq = NULL;
+ struct cryp_device_data *device_data;
+
+ dev_dbg(&pdev->dev, "[%s]", __func__);
+
+ device_data = platform_get_drvdata(pdev);
+ if (!device_data) {
+ dev_err(&pdev->dev, "[%s]: platform_get_drvdata() failed!",
+ __func__);
+ return;
+ }
+
+ /* Check that the device is free */
+ spin_lock(&device_data->ctx_lock);
+ /* current_ctx allocates a device, NULL = unallocated */
+ if (!device_data->current_ctx) {
+ if (down_trylock(&driver_data.device_allocation))
+ dev_dbg(&pdev->dev, "[%s]: Cryp still in use!"
+ "Shutting down anyway...", __func__);
+ /**
+ * (Allocate the device)
+ * Need to set this to non-null (dummy) value,
+ * to avoid usage if context switching.
+ */
+ device_data->current_ctx++;
+ }
+ spin_unlock(&device_data->ctx_lock);
+
+ /* Remove the device from the list */
+ if (klist_node_attached(&device_data->list_node))
+ klist_remove(&device_data->list_node);
+
+ /* If this was the last device, remove the services */
+ if (list_empty(&driver_data.device_list.k_list))
+ cryp_algs_unregister_all();
+
+ res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res_irq)
+ dev_err(&pdev->dev, "[%s]: IORESOURCE_IRQ, unavailable",
+ __func__);
+ else {
+ disable_irq(res_irq->start);
+ free_irq(res_irq->start, device_data);
+ }
+
+ if (cryp_disable_power(&pdev->dev, device_data, false))
+ dev_err(&pdev->dev, "[%s]: cryp_disable_power() failed",
+ __func__);
+
+}
+
+static int ux500_cryp_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ int ret;
+ struct cryp_device_data *device_data;
+ struct resource *res_irq;
+ struct cryp_ctx *temp_ctx = NULL;
+
+ dev_dbg(&pdev->dev, "[%s]", __func__);
+
+ /* Handle state? */
+ device_data = platform_get_drvdata(pdev);
+ if (!device_data) {
+ dev_err(&pdev->dev, "[%s]: platform_get_drvdata() failed!",
+ __func__);
+ return -ENOMEM;
+ }
+
+ res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res_irq)
+ dev_err(&pdev->dev, "[%s]: IORESOURCE_IRQ, unavailable",
+ __func__);
+ else
+ disable_irq(res_irq->start);
+
+ spin_lock(&device_data->ctx_lock);
+ if (!device_data->current_ctx)
+ device_data->current_ctx++;
+ spin_unlock(&device_data->ctx_lock);
+
+ if (device_data->current_ctx == ++temp_ctx) {
+ if (down_interruptible(&driver_data.device_allocation))
+ dev_dbg(&pdev->dev, "[%s]: down_interruptible() "
+ "failed", __func__);
+ ret = cryp_disable_power(&pdev->dev, device_data, false);
+
+ } else
+ ret = cryp_disable_power(&pdev->dev, device_data, true);
+
+ if (ret)
+ dev_err(&pdev->dev, "[%s]: cryp_disable_power()", __func__);
+
+ return ret;
+}
+
+static int ux500_cryp_resume(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct cryp_device_data *device_data;
+ struct resource *res_irq;
+ struct cryp_ctx *temp_ctx = NULL;
+
+ dev_dbg(&pdev->dev, "[%s]", __func__);
+
+ device_data = platform_get_drvdata(pdev);
+ if (!device_data) {
+ dev_err(&pdev->dev, "[%s]: platform_get_drvdata() failed!",
+ __func__);
+ return -ENOMEM;
+ }
+
+ spin_lock(&device_data->ctx_lock);
+ if (device_data->current_ctx == ++temp_ctx)
+ device_data->current_ctx = NULL;
+ spin_unlock(&device_data->ctx_lock);
+
+
+ if (!device_data->current_ctx)
+ up(&driver_data.device_allocation);
+ else
+ ret = cryp_enable_power(&pdev->dev, device_data, true);
+
+ if (ret)
+ dev_err(&pdev->dev, "[%s]: cryp_enable_power() failed!",
+ __func__);
+ else {
+ res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (res_irq)
+ enable_irq(res_irq->start);
+ }
+
+ return ret;
+}
+
+static struct platform_driver cryp_driver = {
+ .probe = ux500_cryp_probe,
+ .remove = ux500_cryp_remove,
+ .shutdown = ux500_cryp_shutdown,
+ .suspend = ux500_cryp_suspend,
+ .resume = ux500_cryp_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "cryp1"
+ }
+};
+
+static int __init ux500_cryp_mod_init(void)
+{
+ pr_debug("[%s] is called!", __func__);
+ klist_init(&driver_data.device_list, NULL, NULL);
+ /* Initialize the semaphore to 0 devices (locked state) */
+ sema_init(&driver_data.device_allocation, 0);
+ return platform_driver_register(&cryp_driver);
+}
+
+static void __exit ux500_cryp_mod_fini(void)
+{
+ pr_debug("[%s] is called!", __func__);
+ platform_driver_unregister(&cryp_driver);
+ return;
+}
+
+module_init(ux500_cryp_mod_init);
+module_exit(ux500_cryp_mod_fini);
+
+module_param(cryp_mode, int, 0);
+
+MODULE_DESCRIPTION("Driver for ST-Ericsson UX500 CRYP crypto engine.");
+MODULE_ALIAS("aes-all");
+MODULE_ALIAS("des-all");
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/crypto/ux500/cryp/cryp_irq.c b/drivers/crypto/ux500/cryp/cryp_irq.c
new file mode 100644
index 0000000..08d291c
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/cryp_irq.c
@@ -0,0 +1,45 @@
+/**
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
+ * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
+ * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
+ * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL) version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitmap.h>
+#include <linux/device.h>
+
+#include "cryp.h"
+#include "cryp_p.h"
+#include "cryp_irq.h"
+#include "cryp_irqp.h"
+
+void cryp_enable_irq_src(struct cryp_device_data *device_data, u32 irq_src)
+{
+ u32 i;
+
+ dev_dbg(device_data->dev, "[%s]", __func__);
+
+ i = readl_relaxed(&device_data->base->imsc);
+ i = i | irq_src;
+ writel_relaxed(i, &device_data->base->imsc);
+}
+
+void cryp_disable_irq_src(struct cryp_device_data *device_data, u32 irq_src)
+{
+ u32 i;
+
+ dev_dbg(device_data->dev, "[%s]", __func__);
+
+ i = readl_relaxed(&device_data->base->imsc);
+ i = i & ~irq_src;
+ writel_relaxed(i, &device_data->base->imsc);
+}
+
+bool cryp_pending_irq_src(struct cryp_device_data *device_data, u32 irq_src)
+{
+ return (readl_relaxed(&device_data->base->mis) & irq_src) > 0;
+}
diff --git a/drivers/crypto/ux500/cryp/cryp_irq.h b/drivers/crypto/ux500/cryp/cryp_irq.h
new file mode 100644
index 0000000..5a7837f
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/cryp_irq.h
@@ -0,0 +1,31 @@
+/**
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
+ * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
+ * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
+ * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#ifndef _CRYP_IRQ_H_
+#define _CRYP_IRQ_H_
+
+#include "cryp.h"
+
+enum cryp_irq_src_id {
+ CRYP_IRQ_SRC_INPUT_FIFO = 0x1,
+ CRYP_IRQ_SRC_OUTPUT_FIFO = 0x2,
+ CRYP_IRQ_SRC_ALL = 0x3
+};
+
+/**
+ * M0 Funtions
+ */
+void cryp_enable_irq_src(struct cryp_device_data *device_data, u32 irq_src);
+
+void cryp_disable_irq_src(struct cryp_device_data *device_data, u32 irq_src);
+
+bool cryp_pending_irq_src(struct cryp_device_data *device_data, u32 irq_src);
+
+#endif /* _CRYP_IRQ_H_ */
diff --git a/drivers/crypto/ux500/cryp/cryp_irqp.h b/drivers/crypto/ux500/cryp/cryp_irqp.h
new file mode 100644
index 0000000..8b339cc
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/cryp_irqp.h
@@ -0,0 +1,125 @@
+/**
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
+ * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
+ * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
+ * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#ifndef __CRYP_IRQP_H_
+#define __CRYP_IRQP_H_
+
+#include "cryp_irq.h"
+
+/**
+ *
+ * CRYP Registers - Offset mapping
+ * +-----------------+
+ * 00h | CRYP_CR | Configuration register
+ * +-----------------+
+ * 04h | CRYP_SR | Status register
+ * +-----------------+
+ * 08h | CRYP_DIN | Data In register
+ * +-----------------+
+ * 0ch | CRYP_DOUT | Data out register
+ * +-----------------+
+ * 10h | CRYP_DMACR | DMA control register
+ * +-----------------+
+ * 14h | CRYP_IMSC | IMSC
+ * +-----------------+
+ * 18h | CRYP_RIS | Raw interrupt status
+ * +-----------------+
+ * 1ch | CRYP_MIS | Masked interrupt status.
+ * +-----------------+
+ * Key registers
+ * IVR registers
+ * Peripheral
+ * Cell IDs
+ *
+ * Refer data structure for other register map
+ */
+
+/**
+ * struct cryp_register
+ * @cr - Configuration register
+ * @status - Status register
+ * @din - Data input register
+ * @din_size - Data input size register
+ * @dout - Data output register
+ * @dout_size - Data output size register
+ * @dmacr - Dma control register
+ * @imsc - Interrupt mask set/clear register
+ * @ris - Raw interrupt status
+ * @mis - Masked interrupt statu register
+ * @key_1_l - Key register 1 L
+ * @key_1_r - Key register 1 R
+ * @key_2_l - Key register 2 L
+ * @key_2_r - Key register 2 R
+ * @key_3_l - Key register 3 L
+ * @key_3_r - Key register 3 R
+ * @key_4_l - Key register 4 L
+ * @key_4_r - Key register 4 R
+ * @init_vect_0_l - init vector 0 L
+ * @init_vect_0_r - init vector 0 R
+ * @init_vect_1_l - init vector 1 L
+ * @init_vect_1_r - init vector 1 R
+ * @cryp_unused1 - unused registers
+ * @itcr - Integration test control register
+ * @itip - Integration test input register
+ * @itop - Integration test output register
+ * @cryp_unused2 - unused registers
+ * @periphId0 - FE0 CRYP Peripheral Identication Register
+ * @periphId1 - FE4
+ * @periphId2 - FE8
+ * @periphId3 - FEC
+ * @pcellId0 - FF0 CRYP PCell Identication Register
+ * @pcellId1 - FF4
+ * @pcellId2 - FF8
+ * @pcellId3 - FFC
+ */
+struct cryp_register {
+ u32 cr; /* Configuration register */
+ u32 sr; /* Status register */
+ u32 din; /* Data input register */
+ u32 din_size; /* Data input size register */
+ u32 dout; /* Data output register */
+ u32 dout_size; /* Data output size register */
+ u32 dmacr; /* Dma control register */
+ u32 imsc; /* Interrupt mask set/clear register */
+ u32 ris; /* Raw interrupt status */
+ u32 mis; /* Masked interrupt statu register */
+
+ u32 key_1_l; /*Key register 1 L */
+ u32 key_1_r; /*Key register 1 R */
+ u32 key_2_l; /*Key register 2 L */
+ u32 key_2_r; /*Key register 2 R */
+ u32 key_3_l; /*Key register 3 L */
+ u32 key_3_r; /*Key register 3 R */
+ u32 key_4_l; /*Key register 4 L */
+ u32 key_4_r; /*Key register 4 R */
+
+ u32 init_vect_0_l; /*init vector 0 L */
+ u32 init_vect_0_r; /*init vector 0 R */
+ u32 init_vect_1_l; /*init vector 1 L */
+ u32 init_vect_1_r; /*init vector 1 R */
+
+ u32 cryp_unused1[(0x80 - 0x58) / sizeof(u32)]; /* unused registers */
+ u32 itcr; /*Integration test control register */
+ u32 itip; /*Integration test input register */
+ u32 itop; /*Integration test output register */
+ u32 cryp_unused2[(0xFE0 - 0x8C) / sizeof(u32)]; /* unused registers */
+
+ u32 periphId0; /* FE0 CRYP Peripheral Identication Register */
+ u32 periphId1; /* FE4 */
+ u32 periphId2; /* FE8 */
+ u32 periphId3; /* FEC */
+
+ u32 pcellId0; /* FF0 CRYP PCell Identication Register */
+ u32 pcellId1; /* FF4 */
+ u32 pcellId2; /* FF8 */
+ u32 pcellId3; /* FFC */
+};
+
+#endif
diff --git a/drivers/crypto/ux500/cryp/cryp_p.h b/drivers/crypto/ux500/cryp/cryp_p.h
new file mode 100644
index 0000000..0e07082
--- /dev/null
+++ b/drivers/crypto/ux500/cryp/cryp_p.h
@@ -0,0 +1,124 @@
+/**
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
+ * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
+ * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
+ * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
+ * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#ifndef _CRYP_P_H_
+#define _CRYP_P_H_
+
+#include <linux/io.h>
+#include <linux/bitops.h>
+
+#include "cryp.h"
+#include "cryp_irqp.h"
+
+/**
+ * Generic Macros
+ */
+#define CRYP_SET_BITS(reg_name, mask) \
+ writel_relaxed((readl_relaxed(reg_name) | mask), reg_name)
+
+#define CRYP_WRITE_BIT(reg_name, val, mask) \
+ writel_relaxed(((readl_relaxed(reg_name) & ~(mask)) |\
+ ((val) & (mask))), reg_name)
+
+#define CRYP_TEST_BITS(reg_name, val) \
+ (readl_relaxed(reg_name) & (val))
+
+#define CRYP_PUT_BITS(reg, val, shift, mask) \
+ writel_relaxed(((readl_relaxed(reg) & ~(mask)) | \
+ (((u32)val << shift) & (mask))), reg)
+
+/**
+ * CRYP specific Macros
+ */
+#define CRYP_PERIPHERAL_ID0 0xE3
+#define CRYP_PERIPHERAL_ID1 0x05
+
+#define CRYP_PERIPHERAL_ID2_DB8500 0x28
+#define CRYP_PERIPHERAL_ID2_DB5500 0x29
+#define CRYP_PERIPHERAL_ID3 0x00
+
+#define CRYP_PCELL_ID0 0x0D
+#define CRYP_PCELL_ID1 0xF0
+#define CRYP_PCELL_ID2 0x05
+#define CRYP_PCELL_ID3 0xB1
+
+/**
+ * CRYP register default values
+ */
+#define MAX_DEVICE_SUPPORT 2
+
+/* Priv set, keyrden set and datatype 8bits swapped set as default. */
+#define CRYP_CR_DEFAULT 0x0482
+#define CRYP_DMACR_DEFAULT 0x0
+#define CRYP_IMSC_DEFAULT 0x0
+#define CRYP_DIN_DEFAULT 0x0
+#define CRYP_DOUT_DEFAULT 0x0
+#define CRYP_KEY_DEFAULT 0x0
+#define CRYP_INIT_VECT_DEFAULT 0x0
+
+/**
+ * CRYP Control register specific mask
+ */
+#define CRYP_CR_SECURE_MASK BIT(0)
+#define CRYP_CR_PRLG_MASK BIT(1)
+#define CRYP_CR_ALGODIR_MASK BIT(2)
+#define CRYP_CR_ALGOMODE_MASK (BIT(5) | BIT(4) | BIT(3))
+#define CRYP_CR_DATATYPE_MASK (BIT(7) | BIT(6))
+#define CRYP_CR_KEYSIZE_MASK (BIT(9) | BIT(8))
+#define CRYP_CR_KEYRDEN_MASK BIT(10)
+#define CRYP_CR_KSE_MASK BIT(11)
+#define CRYP_CR_START_MASK BIT(12)
+#define CRYP_CR_INIT_MASK BIT(13)
+#define CRYP_CR_FFLUSH_MASK BIT(14)
+#define CRYP_CR_CRYPEN_MASK BIT(15)
+#define CRYP_CR_CONTEXT_SAVE_MASK (CRYP_CR_SECURE_MASK |\
+ CRYP_CR_PRLG_MASK |\
+ CRYP_CR_ALGODIR_MASK |\
+ CRYP_CR_ALGOMODE_MASK |\
+ CRYP_CR_DATATYPE_MASK |\
+ CRYP_CR_KEYSIZE_MASK |\
+ CRYP_CR_KEYRDEN_MASK |\
+ CRYP_CR_DATATYPE_MASK)
+
+
+#define CRYP_SR_INFIFO_READY_MASK (BIT(0) | BIT(1))
+#define CRYP_SR_IFEM_MASK BIT(0)
+#define CRYP_SR_BUSY_MASK BIT(4)
+
+/**
+ * Bit position used while setting bits in register
+ */
+#define CRYP_CR_PRLG_POS 1
+#define CRYP_CR_ALGODIR_POS 2
+#define CRYP_CR_ALGOMODE_POS 3
+#define CRYP_CR_DATATYPE_POS 6
+#define CRYP_CR_KEYSIZE_POS 8
+#define CRYP_CR_KEYRDEN_POS 10
+#define CRYP_CR_KSE_POS 11
+#define CRYP_CR_START_POS 12
+#define CRYP_CR_INIT_POS 13
+#define CRYP_CR_CRYPEN_POS 15
+
+#define CRYP_SR_BUSY_POS 4
+
+/**
+ * CRYP PCRs------PC_NAND control register
+ * BIT_MASK
+ */
+#define CRYP_DMA_REQ_MASK (BIT(1) | BIT(0))
+#define CRYP_DMA_REQ_MASK_POS 0
+
+
+struct cryp_system_context {
+ /* CRYP Register structure */
+ struct cryp_register *p_cryp_reg[MAX_DEVICE_SUPPORT];
+};
+
+#endif