blob: 9200524bb64d2cbff10bac8020f70043aa5a7b9a [file] [log] [blame]
#ifndef __SEP_DEV_H__
#define __SEP_DEV_H__
* sep_dev.h - Security Processor Device Structures
* Copyright(c) 2009 Intel Corporation. All rights reserved.
* Copyright(c) 2009 Discretix. All rights reserved.
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* Alan Cox
struct sep_device {
/* pointer to pci dev */
struct pci_dev *pdev;
unsigned long in_use;
/* address of the shared memory allocated during init for SEP driver
(coherent alloc) */
void *shared_addr;
/* the physical address of the shared area */
dma_addr_t shared_bus;
/* restricted access region (coherent alloc) */
dma_addr_t rar_bus;
void *rar_addr;
/* firmware regions: cache is at rar_addr */
unsigned long cache_size;
/* follows the cache */
dma_addr_t resident_bus;
unsigned long resident_size;
void *resident_addr;
/* start address of the access to the SEP registers from driver */
void __iomem *reg_addr;
/* transaction counter that coordinates the transactions between SEP and HOST */
unsigned long send_ct;
/* counter for the messages from sep */
unsigned long reply_ct;
/* counter for the number of bytes allocated in the pool for the current
transaction */
unsigned long data_pool_bytes_allocated;
/* array of pointers to the pages that represent input data for the synchronic
DMA action */
struct page **in_page_array;
/* array of pointers to the pages that represent out data for the synchronic
DMA action */
struct page **out_page_array;
/* number of pages in the sep_in_page_array */
unsigned long in_num_pages;
/* number of pages in the sep_out_page_array */
unsigned long out_num_pages;
/* global data for every flow */
struct sep_flow_context_t flows[SEP_DRIVER_NUM_FLOWS];
/* pointer to the workqueue that handles the flow done interrupts */
struct workqueue_struct *flow_wq;
static struct sep_device *sep_dev;
static inline void sep_write_reg(struct sep_device *dev, int reg, u32 value)
void __iomem *addr = dev->reg_addr + reg;
writel(value, addr);
static inline u32 sep_read_reg(struct sep_device *dev, int reg)
void __iomem *addr = dev->reg_addr + reg;
return readl(addr);
/* wait for SRAM write complete(indirect write */
static inline void sep_wait_sram_write(struct sep_device *dev)
u32 reg_val;
reg_val = sep_read_reg(dev, HW_SRAM_DATA_READY_REG_ADDR);
while (!(reg_val & 1));