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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/crypto/ux500/cryp/cryp.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/crypto/ux500/cryp/cryp.h')
-rw-r--r--kernel/drivers/crypto/ux500/cryp/cryp.h313
1 files changed, 313 insertions, 0 deletions
diff --git a/kernel/drivers/crypto/ux500/cryp/cryp.h b/kernel/drivers/crypto/ux500/cryp/cryp.h
new file mode 100644
index 000000000..d1d6606fe
--- /dev/null
+++ b/kernel/drivers/crypto/ux500/cryp/cryp.h
@@ -0,0 +1,313 @@
+/**
+ * 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 */
+#define CRYP_DMA_TX_FIFO 0x08
+#define CRYP_DMA_RX_FIFO 0x10
+
+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 virtual base address of the cryp device.
+ * @phybase: Pointer to physical memory location of the cryp device.
+ * @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;
+ phys_addr_t phybase;
+ 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_ */