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 Intel Corporation. All rights reserved.
   9  *  Copyright(c) 2009 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; either version 2 of the License, or (at your option)
  14  *  any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  19  *  more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along with
  22  *  this program; if not, write to the Free Software Foundation, Inc., 59
  23  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  *
  25  *  CONTACTS:
  26  *
  27  *  Alan Cox            alan@linux.intel.com
  28  *
  29  */
  30
  31 struct sep_device {
  32         /* pointer to pci dev */
  33         struct pci_dev *sep_pci_dev_ptr;
  34
  35         unsigned long io_memory_start_physical_address;
  36         unsigned long io_memory_end_physical_address;
  37         unsigned long io_memory_size;
  38         void *io_memory_start_virtual_address;
  39
  40         /* restricted access region */
  41         unsigned long rar_physical_address;
  42         void *rar_virtual_address;
  43
  44         /* shared memory region */
  45         unsigned long shared_physical_address;
  46         void *shared_virtual_address;
  47
  48         /* firmware regions */
  49         unsigned long cache_physical_address;
  50         unsigned long cache_size;
  51         void *cache_virtual_address;
  52
  53         unsigned long resident_physical_address;
  54         unsigned long resident_size;
  55         void *resident_virtual_address;
  56
  57         /* device interrupt (as retrieved from PCI) */
  58         int sep_irq;
  59
  60         unsigned long rar_region_addr;
  61
  62         /* start address of the access to the SEP registers from driver */
  63         unsigned long reg_base_address;
  64         /* transaction counter that coordinates the transactions between SEP and HOST */
  65         unsigned long host_to_sep_send_counter;
  66         /* counter for the messages from sep */
  67         unsigned long sep_to_host_reply_counter;
  68         /* counter for the number of bytes allocated in the pool for the current
  69         transaction */
  70         unsigned long data_pool_bytes_allocated;
  71
  72         /* array of pointers to the pages that represent input data for the synchronic
  73         DMA action */
  74         struct page **in_page_array;
  75
  76         /* array of pointers to the pages that represent out data for the synchronic
  77         DMA action */
  78         struct page **out_page_array;
  79
  80         /* number of pages in the sep_in_page_array */
  81         unsigned long in_num_pages;
  82
  83         /* number of pages in the sep_out_page_array */
  84         unsigned long out_num_pages;
  85
  86         /* global data for every flow */
  87         struct sep_flow_context_t flows_data_array[SEP_DRIVER_NUM_FLOWS];
  88
  89         /* flag for API mode - 1 -is blocking, 0 is non-blocking */
  90         unsigned long block_mode_flag;
  91
  92         /* pointer to the workqueue that handles the flow done interrupts */
  93         struct workqueue_struct *flow_wq_ptr;
  94
  95         /* address of the shared memory allocated during init for SEP driver */
  96         unsigned long shared_area_addr;
  97         /* the physical address of the shared area */
  98         unsigned long phys_shared_area_addr;
  99
 100         /* Message Shared Area start address - will be allocated during init */
 101         unsigned long message_shared_area_addr;
 102 };
 103
 104 extern struct sep_device *sep_dev;
 105
 106 extern inline void sep_write_reg(struct sep_device *dev, int reg, u32 value)
 107 {
 108         void __iomem *addr = dev->reg_base_address + reg;
 109         writel(value, reg);
 110 }
 111
 112 extern inline u32 sep_read_reg(struct sep_device *dev, int reg)
 113 {
 114         void __iomem *addr = dev->reg_base_address + reg;
 115         return readl(reg);
 116 }
 117
 118 #endif
 119