drivers/staging/sep/sep_dev.h

   1 #ifndef __SEP_DEV_H__
   2 #define __SEP_DEV_H__
   3
   4 /*
   5  *
   6  *  sep_dev.h - Security Processor Device Structures
   7  *
   8  *  Copyright(c) 2009,2010 Intel Corporation. All rights reserved.
   9  *  Contributions(c) 2009,2010 Discretix. All rights reserved.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the Free
  13  *  Software Foundation; version 2 of the License.
  14  *
  15  *  This program is distributed in the hope that it will be useful, but WITHOUT
  16  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  *  more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License along with
  21  *  this program; if not, write to the Free Software Foundation, Inc., 59
  22  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23  *
  24  *  CONTACTS:
  25  *
  26  *  Mark Allyn          mark.a.allyn@intel.com
  27  *  Jayant Mangalampalli jayant.mangalampalli@intel.com
  28  *
  29  *  CHANGES
  30  *  2010.09.14  upgrade to Medfield
  31  */
  32
  33 struct sep_device {
  34         /* pointer to pci dev */
  35         struct pci_dev *pdev;
  36
  37         /* character device file */
  38         struct cdev sep_cdev;
  39         struct cdev sep_daemon_cdev;
  40         struct cdev sep_singleton_cdev;
  41
  42         /* devices (using misc dev) */
  43         struct miscdevice miscdev_sep;
  44         struct miscdevice miscdev_singleton;
  45         struct miscdevice miscdev_daemon;
  46
  47         /* major / minor numbers of device */
  48         dev_t sep_devno;
  49         dev_t sep_daemon_devno;
  50         dev_t sep_singleton_devno;
  51
  52         struct mutex sep_mutex;
  53         struct mutex ioctl_mutex;
  54         spinlock_t snd_rply_lck;
  55
  56         /* flags to indicate use and lock status of sep */
  57         u32 pid_doing_transaction;
  58         unsigned long in_use_flags;
  59
  60         /* request daemon alread open */
  61         unsigned long request_daemon_open;
  62
  63         /* 1 = Moorestown; 0 = Medfield */
  64         int mrst;
  65
  66         /* address of the shared memory allocated during init for SEP driver
  67            (coherent alloc) */
  68         dma_addr_t shared_bus;
  69         size_t shared_size;
  70         void *shared_addr;
  71
  72         /* start address of the access to the SEP registers from driver */
  73         dma_addr_t reg_physical_addr;
  74         dma_addr_t reg_physical_end;
  75         void __iomem *reg_addr;
  76
  77         /* wait queue head (event) of the driver */
  78         wait_queue_head_t event;
  79         wait_queue_head_t event_request_daemon;
  80         wait_queue_head_t event_mmap;
  81
  82         struct sep_caller_id_entry
  83                 caller_id_table[SEP_CALLER_ID_TABLE_NUM_ENTRIES];
  84
  85         /* access flag for singleton device */
  86         unsigned long singleton_access_flag;
  87
  88         /* transaction counter that coordinates the
  89            transactions between SEP and HOST */
  90         unsigned long send_ct;
  91         /* counter for the messages from sep */
  92         unsigned long reply_ct;
  93         /* counter for the number of bytes allocated in the pool for the
  94            current transaction */
  95         long data_pool_bytes_allocated;
  96
  97         u32 num_of_data_allocations;
  98
  99         /* number of the lli tables created in the current transaction */
 100         u32     num_lli_tables_created;
 101
 102         /* number of data control blocks */
 103         u32 nr_dcb_creat;
 104
 105         struct sep_dma_resource dma_res_arr[SEP_MAX_NUM_SYNC_DMA_OPS];
 106
 107 };
 108
 109 static inline void sep_write_reg(struct sep_device *dev, int reg, u32 value)
 110 {
 111         void __iomem *addr = dev->reg_addr + reg;
 112         writel(value, addr);
 113 }
 114
 115 static inline u32 sep_read_reg(struct sep_device *dev, int reg)
 116 {
 117         void __iomem *addr = dev->reg_addr + reg;
 118         return readl(addr);
 119 }
 120
 121 /* wait for SRAM write complete(indirect write */
 122 static inline void sep_wait_sram_write(struct sep_device *dev)
 123 {
 124         u32 reg_val;
 125         do {
 126                 reg_val = sep_read_reg(dev, HW_SRAM_DATA_READY_REG_ADDR);
 127         } while (!(reg_val & 1));
 128 }
 129
 130
 131 #endif