package/kernel/lantiq/ltq-deu/src/ifxmips_deu.h

   1 /******************************************************************************
   2 **
   3 ** FILE NAME    : ifxmips_deu.h
   4 ** DESCRIPTION  : Data Encryption Unit Driver
   5 ** COPYRIGHT    :       Copyright (c) 2009
   6 **                      Infineon Technologies AG
   7 **                      Am Campeon 1-12, 85579 Neubiberg, Germany
   8 **
   9 **    This program is free software; you can redistribute it and/or modify
  10 **    it under the terms of the GNU General Public License as published by
  11 **    the Free Software Foundation; either version 2 of the License, or
  12 **    (at your option) any later version.
  13 **
  14 ** HISTORY
  15 ** $Date        $Author             $Comment
  16 ** 08,Sept 2009 Mohammad Firdaus    Initial UEIP release
  17 *******************************************************************************/
  18 /*!
  19   \defgroup IFX_DEU IFX_DEU_DRIVERS
  20   \ingroup  API
  21   \brief ifx deu driver module
  22 */
  23
  24 /*!
  25   \file ifxmips_deu.h
  26   \brief main deu driver header file
  27 */
  28
  29 /*!
  30   \defgroup IFX_DEU_DEFINITIONS IFX_DEU_DEFINITIONS
  31   \ingroup  IFX_DEU
  32   \brief ifx deu definitions
  33 */
  34
  35
  36 #ifndef IFXMIPS_DEU_H
  37 #define IFXMIPS_DEU_H
  38
  39 #include <crypto/algapi.h>
  40 #include <linux/interrupt.h>
  41
  42 #define IFXDEU_ALIGNMENT 16
  43
  44 #define IFX_DEU_BASE_ADDR                       (KSEG1 | 0x1E103100)
  45 #define IFX_DEU_CLK                             ((volatile u32 *)(IFX_DEU_BASE_ADDR + 0x0000))
  46 #define IFX_DES_CON                             ((volatile u32 *)(IFX_DEU_BASE_ADDR + 0x0010))
  47 #define IFX_AES_CON                             ((volatile u32 *)(IFX_DEU_BASE_ADDR + 0x0050))
  48 #define IFX_HASH_CON                            ((volatile u32 *)(IFX_DEU_BASE_ADDR + 0x00B0))
  49 #define IFX_ARC4_CON                            ((volatile u32 *)(IFX_DEU_BASE_ADDR + 0x0100))
  50
  51 #define PFX     "ifxdeu: "
  52 #define CLC_START IFX_DEU_CLK
  53 #define IFXDEU_CRA_PRIORITY     300
  54 #define IFXDEU_COMPOSITE_PRIORITY 400
  55 //#define KSEG1                         0xA0000000
  56 #define IFX_PMU_ENABLE 1
  57 #define IFX_PMU_DISABLE 0
  58
  59 #define CRYPTO_DIR_ENCRYPT 1
  60 #define CRYPTO_DIR_DECRYPT 0
  61
  62 #define AES_IDLE 0
  63 #define AES_BUSY 1
  64 #define AES_STARTED 2
  65 #define AES_COMPLETED 3
  66 #define DES_IDLE 0
  67 #define DES_BUSY 1
  68 #define DES_STARTED 2
  69 #define DES_COMPLETED 3
  70
  71 #define PROCESS_SCATTER 1
  72 #define PROCESS_NEW_PACKET 2
  73
  74 #define PMU_DEU BIT(20)
  75 #define START_DEU_POWER        \
  76     do {                       \
  77         volatile struct clc_controlr_t *clc = (struct clc_controlr_t *) CLC_START;  \
  78         ltq_pmu_enable(PMU_DEU); \
  79         clc->FSOE = 0;           \
  80         clc->SBWE = 0;           \
  81         clc->SPEN = 0;           \
  82         clc->SBWE = 0;           \
  83         clc->DISS = 0;           \
  84         clc->DISR = 0;           \
  85     } while(0)
  86
  87 #define STOP_DEU_POWER          \
  88     do {                        \
  89         volatile struct clc_controlr_t *clc = (struct clc_controlr_t *) CLC_START; \
  90         ltq_pmu_disable(PMU_DEU); \
  91         clc->FSOE = 1;          \
  92         clc->SBWE = 1;           \
  93         clc->SPEN = 1;           \
  94         clc->SBWE = 1;           \
  95         clc->DISS = 1;           \
  96         clc->DISR = 1;           \
  97     } while (0)
  98
  99 /*
 100  * Not used anymore in UEIP (use IFX_DES_CON, IFX_AES_CON, etc instead)
 101  * #define DEU_BASE   (KSEG1+0x1E103100)
 102  * #define DES_CON              (DEU_BASE+0x10)
 103  * #define AES_CON              (DEU_BASE+0x50)
 104  * #define HASH_CON     (DEU_BASE+0xB0)
 105  * #define DMA_CON              (DEU_BASE+0xEC)
 106  * #define INT_CON              (DEU_BASE+0xF4)
 107  * #define ARC4_CON     (DEU_BASE+0x100)
 108  */
 109
 110
 111 int ifxdeu_init_des (void);
 112 int ifxdeu_init_aes (void);
 113 int ifxdeu_init_arc4 (void);
 114 int ifxdeu_init_sha1 (void);
 115 int ifxdeu_init_md5 (void);
 116 int ifxdeu_init_sha1_hmac (void);
 117 int ifxdeu_init_md5_hmac (void);
 118 int __init lqdeu_async_aes_init(void);
 119 int __init lqdeu_async_des_init(void);
 120
 121 void ifxdeu_fini_des (void);
 122 void ifxdeu_fini_aes (void);
 123 void ifxdeu_fini_arc4 (void);
 124 void ifxdeu_fini_sha1 (void);
 125 void ifxdeu_fini_md5 (void);
 126 void ifxdeu_fini_sha1_hmac (void);
 127 void ifxdeu_fini_md5_hmac (void);
 128 void __exit ifxdeu_fini_dma(void);
 129 void __exit lqdeu_fini_async_aes(void);
 130 void __exit lqdeu_fini_async_des(void);
 131 void __exit deu_fini (void);
 132 int deu_dma_init (void);
 133
 134 extern spinlock_t ltq_deu_hash_lock;
 135 #define CRTCL_SECT_HASH_INIT        spin_lock_init(&ltq_deu_hash_lock)
 136 #define CRTCL_SECT_HASH_START       spin_lock_irqsave(&ltq_deu_hash_lock, flag)
 137 #define CRTCL_SECT_HASH_END         spin_unlock_irqrestore(&ltq_deu_hash_lock, flag)
 138
 139
 140 #define DEU_WAKELIST_INIT(queue) \
 141     init_waitqueue_head(&queue)
 142
 143 #define DEU_WAIT_EVENT_TIMEOUT(queue, event, flags, timeout)     \
 144     do {                                                         \
 145         wait_event_interruptible_timeout((queue),                \
 146             test_bit((event), &(flags)), (timeout));            \
 147         clear_bit((event), &(flags));                            \
 148     }while (0)
 149
 150
 151 #define DEU_WAKEUP_EVENT(queue, event, flags)         \
 152     do {                                              \
 153         set_bit((event), &(flags));                   \
 154         wake_up_interruptible(&(queue));              \
 155     }while (0)
 156
 157 #define DEU_WAIT_EVENT(queue, event, flags)           \
 158     do {                                              \
 159         wait_event_interruptible(queue,               \
 160             test_bit((event), &(flags)));             \
 161         clear_bit((event), &(flags));                 \
 162     }while (0)
 163
 164 typedef struct deu_drv_priv {
 165     wait_queue_head_t  deu_thread_wait;
 166 #define DEU_EVENT       1
 167 #define DES_ASYNC_EVENT 2
 168 #define AES_ASYNC_EVENT 3
 169     volatile long      des_event_flags;
 170     volatile long      aes_event_flags;
 171     volatile long      deu_event_flags;
 172     int                event_src;
 173     u32                *deu_rx_buf;
 174     u32                *outcopy;
 175     u32                deu_rx_len;
 176
 177     struct aes_priv    *aes_dataptr;
 178     struct des_priv    *des_dataptr;
 179 }deu_drv_priv_t;
 180
 181
 182 /**
 183  *      struct aes_priv_t - ASYNC AES
 184  *      @lock: spinlock lock
 185  *      @lock_flag: flag for spinlock activities
 186  *      @list: crypto queue API list
 187  *      @hw_status: DEU hw status flag
 188  *      @aes_wait_flag: flag for sleep queue
 189  *      @aes_wait_queue: queue attributes for aes
 190  *      @bytes_processed: number of bytes to process by DEU
 191  *      @aes_pid: pid number for AES thread
 192  *      @aes_sync: atomic wait sync for AES
 193  *
 194 */
 195
 196 typedef struct {
 197     spinlock_t lock;
 198     struct crypto_queue list;
 199     unsigned int hw_status;
 200     volatile long aes_wait_flag;
 201     wait_queue_head_t aes_wait_queue;
 202
 203     pid_t aes_pid;
 204
 205     struct tasklet_struct aes_task;
 206
 207 } aes_priv_t;
 208
 209 /**
 210  *      struct des_priv_t - ASYNC DES
 211  *      @lock: spinlock lock
 212  *      @list: crypto queue API list
 213  *      @hw_status: DEU hw status flag
 214  *      @des_wait_flag: flag for sleep queue
 215  *      @des_wait_queue: queue attributes for des
 216  *      @des_pid: pid number for DES thread
 217  *      @des_sync: atomic wait sync for DES
 218  *
 219 */
 220
 221 typedef struct {
 222     spinlock_t lock;
 223     struct crypto_queue list;
 224     unsigned int hw_status;
 225     volatile long des_wait_flag;
 226     wait_queue_head_t des_wait_queue;
 227
 228     pid_t des_pid;
 229
 230     struct tasklet_struct des_task;
 231
 232 } des_priv_t;
 233
 234 #endif  /* IFXMIPS_DEU_H */
 235
 236