diff options
Diffstat (limited to 'drivers/staging/sep')
| -rw-r--r-- | drivers/staging/sep/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/staging/sep/Makefile | 3 | ||||
| -rw-r--r-- | drivers/staging/sep/TODO | 8 | ||||
| -rw-r--r-- | drivers/staging/sep/sep_driver_api.h | 545 | ||||
| -rw-r--r-- | drivers/staging/sep/sep_driver_config.h | 305 | ||||
| -rw-r--r-- | drivers/staging/sep/sep_driver_ext_api.h | 106 | ||||
| -rw-r--r-- | drivers/staging/sep/sep_driver_hw_defs.h | 240 | ||||
| -rw-r--r-- | drivers/staging/sep/sep_ext_with_pci_driver.c | 631 | ||||
| -rw-r--r-- | drivers/staging/sep/sep_main_mod.c | 3919 |
9 files changed, 5766 insertions, 0 deletions
diff --git a/drivers/staging/sep/Kconfig b/drivers/staging/sep/Kconfig new file mode 100644 index 0000000..1a4514d --- /dev/null +++ b/drivers/staging/sep/Kconfig @@ -0,0 +1,9 @@ +config DX_SEP + tristate "Discretix SEP driver" + depends on MRST + default y + help + Discretix SEP driver + + If unsure say M. The compiled module will be + called sep_driver.ko diff --git a/drivers/staging/sep/Makefile b/drivers/staging/sep/Makefile new file mode 100644 index 0000000..e2528e8 --- /dev/null +++ b/drivers/staging/sep/Makefile @@ -0,0 +1,3 @@ +EXTRA_CFLAGS += -DLITTLE__ENDIAN -DDX_CC5_SEP_PLAT -DCRYS_NO_EXT_IF_MODE_SUPPORT +obj-$(CONFIG_DX_SEP) := sep_driver.o +sep_driver-objs := sep_main_mod.o sep_ext_with_pci_driver.o diff --git a/drivers/staging/sep/TODO b/drivers/staging/sep/TODO new file mode 100644 index 0000000..ff0e931 --- /dev/null +++ b/drivers/staging/sep/TODO @@ -0,0 +1,8 @@ +Todo's so far (from Alan Cox) +- Fix firmware loading +- Get firmware into firmware git tree +- Review and tidy each algorithm function +- Check whether it can be plugged into any of the kernel crypto API + interfaces +- Do something about the magic shared memory interface and replace it + with something saner (in Linux terms) diff --git a/drivers/staging/sep/sep_driver_api.h b/drivers/staging/sep/sep_driver_api.h new file mode 100644 index 0000000..6a3be5d --- /dev/null +++ b/drivers/staging/sep/sep_driver_api.h @@ -0,0 +1,545 @@ +/* + * + * sep_driver_api.h - Security Processor Driver api definitions + * + * 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. + * + * CONTACTS: + * + * Mark Allyn mark.a.allyn@intel.com + * + * CHANGES: + * + * 2009.06.26 Initial publish + * + */ + +#ifndef __SEP_DRIVER_API_H__ +#define __SEP_DRIVER_API_H__ + + + +/*---------------------------------------------------------------- + IOCTL command defines + -----------------------------------------------------------------*/ + +/* magic number 1 of the sep IOCTL command */ +#define SEP_IOC_MAGIC_NUMBER 's' + +/* sends interrupt to sep that message is ready */ +#define SEP_IOCSENDSEPCOMMAND _IO(SEP_IOC_MAGIC_NUMBER , 0) + +/* sends interrupt to sep that message is ready */ +#define SEP_IOCSENDSEPRPLYCOMMAND _IO(SEP_IOC_MAGIC_NUMBER , 1) + +/* allocate memory in data pool */ +#define SEP_IOCALLOCDATAPOLL _IO(SEP_IOC_MAGIC_NUMBER , 2) + +/* write to pre-allocated memory in data pool */ +#define SEP_IOCWRITEDATAPOLL _IO(SEP_IOC_MAGIC_NUMBER , 3) + +/* read from pre-allocated memory in data pool */ +#define SEP_IOCREADDATAPOLL _IO(SEP_IOC_MAGIC_NUMBER , 4) + +/* create sym dma lli tables */ +#define SEP_IOCCREATESYMDMATABLE _IO(SEP_IOC_MAGIC_NUMBER , 5) + +/* create flow dma lli tables */ +#define SEP_IOCCREATEFLOWDMATABLE _IO(SEP_IOC_MAGIC_NUMBER , 6) + +/* free dynamic data aalocated during table creation */ +#define SEP_IOCFREEDMATABLEDATA _IO(SEP_IOC_MAGIC_NUMBER , 7) + +/* get the static pool area addersses (physical and virtual) */ +#define SEP_IOCGETSTATICPOOLADDR _IO(SEP_IOC_MAGIC_NUMBER , 8) + +/* set flow id command */ +#define SEP_IOCSETFLOWID _IO(SEP_IOC_MAGIC_NUMBER , 9) + +/* add tables to the dynamic flow */ +#define SEP_IOCADDFLOWTABLE _IO(SEP_IOC_MAGIC_NUMBER , 10) + +/* add flow add tables message */ +#define SEP_IOCADDFLOWMESSAGE _IO(SEP_IOC_MAGIC_NUMBER , 11) + +/* start sep command */ +#define SEP_IOCSEPSTART _IO(SEP_IOC_MAGIC_NUMBER , 12) + +/* init sep command */ +#define SEP_IOCSEPINIT _IO(SEP_IOC_MAGIC_NUMBER , 13) + +/* set non blocking mode */ +#define SEP_IOCSETAPIMODE _IO(SEP_IOC_MAGIC_NUMBER , 14) + +/* end transaction command */ +#define SEP_IOCENDTRANSACTION _IO(SEP_IOC_MAGIC_NUMBER , 15) + +/* reallocate cache and resident */ +#define SEP_IOCREALLOCCACHERES _IO(SEP_IOC_MAGIC_NUMBER , 16) + +/* get the offset of the address starting from the beginnnig of the map area */ +#define SEP_IOCGETMAPPEDADDROFFSET _IO(SEP_IOC_MAGIC_NUMBER , 17) + +/* get time address and value */ +#define SEP_IOCGETIME _IO(SEP_IOC_MAGIC_NUMBER , 19) + +/*------------------------------------------- + TYPEDEFS +----------------------------------------------*/ + +/* + init command struct +*/ +struct sep_driver_init_t { + /* start of the 1G of the host memory address that SEP can access */ + unsigned long message_addr; + + /* start address of resident */ + unsigned long message_size_in_words; + +}; + + +/* + realloc cache resident command +*/ +struct sep_driver_realloc_cache_resident_t { + /* base address */ + unsigned long base_addr; + + /* current cache address */ + unsigned long cache_addr; + + /* cache size in bytes*/ + unsigned long cache_size_in_bytes; + + /* current resident address */ + unsigned long resident_addr; + + /* resident size in bytes*/ + unsigned long resident_size_in_bytes; + + /* new cache address */ + unsigned long new_cache_addr; + + /* new resident address */ + unsigned long new_resident_addr; + + /* new resident address */ + unsigned long new_shared_area_addr; + + /* new base address */ + unsigned long new_base_addr; +}; + +/* + set api mode command struct +*/ +struct sep_driver_set_api_mode_t { + /* mode to set - 1 - blocking, 0 - non-blocking */ + unsigned long mode; +}; + +struct sep_driver_alloc_t { + /* virtual address of allocated space */ + unsigned long offset; + + /* physical address of allocated space */ + unsigned long phys_address; + + /* number of bytes to allocate */ + unsigned long num_bytes; +}; + +/* + */ +struct sep_driver_write_t { + /* application space address */ + unsigned long app_address; + + /* address of the data pool */ + unsigned long datapool_address; + + /* number of bytes to write */ + unsigned long num_bytes; +}; + +/* + */ +struct sep_driver_read_t { + /* application space address */ + unsigned long app_address; + + /* address of the data pool */ + unsigned long datapool_address; + + /* number of bytes to read */ + unsigned long num_bytes; +}; + +/* +*/ +struct sep_driver_build_sync_table_t { + /* address value of the data in */ + unsigned long app_in_address; + + /* size of data in */ + unsigned long data_in_size; + + /* address of the data out */ + unsigned long app_out_address; + + /* the size of the block of the operation - if needed, + every table will be modulo this parameter */ + unsigned long block_size; + + /* the physical address of the first input DMA table */ + unsigned long in_table_address; + + /* number of entries in the first input DMA table */ + unsigned long in_table_num_entries; + + /* the physical address of the first output DMA table */ + unsigned long out_table_address; + + /* number of entries in the first output DMA table */ + unsigned long out_table_num_entries; + + /* data in the first input table */ + unsigned long table_data_size; + + /* distinct user/kernel layout */ + bool isKernelVirtualAddress; + +}; + +/* +*/ +struct sep_driver_build_flow_table_t { + /* flow type */ + unsigned long flow_type; + + /* flag for input output */ + unsigned long input_output_flag; + + /* address value of the data in */ + unsigned long virt_buff_data_addr; + + /* size of data in */ + unsigned long num_virtual_buffers; + + /* the physical address of the first input DMA table */ + unsigned long first_table_addr; + + /* number of entries in the first input DMA table */ + unsigned long first_table_num_entries; + + /* data in the first input table */ + unsigned long first_table_data_size; + + /* distinct user/kernel layout */ + bool isKernelVirtualAddress; +}; + + +struct sep_driver_add_flow_table_t { + /* flow id */ + unsigned long flow_id; + + /* flag for input output */ + unsigned long inputOutputFlag; + + /* address value of the data in */ + unsigned long virt_buff_data_addr; + + /* size of data in */ + unsigned long num_virtual_buffers; + + /* address of the first table */ + unsigned long first_table_addr; + + /* number of entries in the first table */ + unsigned long first_table_num_entries; + + /* data size of the first table */ + unsigned long first_table_data_size; + + /* distinct user/kernel layout */ + bool isKernelVirtualAddress; + +}; + +/* + command struct for set flow id +*/ +struct sep_driver_set_flow_id_t { + /* flow id to set */ + unsigned long flow_id; +}; + + +/* command struct for add tables message */ +struct sep_driver_add_message_t { + /* flow id to set */ + unsigned long flow_id; + + /* message size in bytes */ + unsigned long message_size_in_bytes; + + /* address of the message */ + unsigned long message_address; +}; + +/* command struct for static pool addresses */ +struct sep_driver_static_pool_addr_t { + /* physical address of the static pool */ + unsigned long physical_static_address; + + /* virtual address of the static pool */ + unsigned long virtual_static_address; +}; + +/* command struct for getiing offset of the physical address from + the start of the mapped area */ +struct sep_driver_get_mapped_offset_t { + /* physical address of the static pool */ + unsigned long physical_address; + + /* virtual address of the static pool */ + unsigned long offset; +}; + +/* command struct for getting time value and address */ +struct sep_driver_get_time_t { + /* physical address of stored time */ + unsigned long time_physical_address; + + /* value of the stored time */ + unsigned long time_value; +}; + + +/* + structure that represent one entry in the DMA LLI table +*/ +struct sep_lli_entry_t { + /* physical address */ + unsigned long physical_address; + + /* block size */ + unsigned long block_size; +}; + +/* + structure that reperesents data needed for lli table construction +*/ +struct sep_lli_prepare_table_data_t { + /* pointer to the memory where the first lli entry to be built */ + struct sep_lli_entry_t *lli_entry_ptr; + + /* pointer to the array of lli entries from which the table is to be built */ + struct sep_lli_entry_t *lli_array_ptr; + + /* number of elements in lli array */ + int lli_array_size; + + /* number of entries in the created table */ + int num_table_entries; + + /* number of array entries processed during table creation */ + int num_array_entries_processed; + + /* the totatl data size in the created table */ + int lli_table_total_data_size; +}; + +/* + structure that represent tone table - it is not used in code, jkust + to show what table looks like +*/ +struct sep_lli_table_t { + /* number of pages mapped in this tables. If 0 - means that the table + is not defined (used as a valid flag)*/ + unsigned long num_pages; + /* + pointer to array of page pointers that represent the mapping of the + virtual buffer defined by the table to the physical memory. If this + pointer is NULL, it means that the table is not defined + (used as a valid flag) + */ + struct page **table_page_array_ptr; + + /* maximum flow entries in table */ + struct sep_lli_entry_t lli_entries[SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE]; +}; + + +/* + structure for keeping the mapping of the virtual buffer into physical pages +*/ +struct sep_flow_buffer_data { + /* pointer to the array of page structs pointers to the pages of the + virtual buffer */ + struct page **page_array_ptr; + + /* number of pages taken by the virtual buffer */ + unsigned long num_pages; + + /* this flag signals if this page_array is the last one among many that were + sent in one setting to SEP */ + unsigned long last_page_array_flag; +}; + +/* + struct that keeps all the data for one flow +*/ +struct sep_flow_context_t { + /* + work struct for handling the flow done interrupt in the workqueue + this structure must be in the first place, since it will be used + forcasting to the containing flow context + */ + struct work_struct flow_wq; + + /* flow id */ + unsigned long flow_id; + + /* additional input tables exists */ + unsigned long input_tables_flag; + + /* additional output tables exists */ + unsigned long output_tables_flag; + + /* data of the first input file */ + struct sep_lli_entry_t first_input_table; + + /* data of the first output table */ + struct sep_lli_entry_t first_output_table; + + /* last input table data */ + struct sep_lli_entry_t last_input_table; + + /* last output table data */ + struct sep_lli_entry_t last_output_table; + + /* first list of table */ + struct sep_lli_entry_t input_tables_in_process; + + /* output table in process (in sep) */ + struct sep_lli_entry_t output_tables_in_process; + + /* size of messages in bytes */ + unsigned long message_size_in_bytes; + + /* message */ + unsigned char message[SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES]; +}; + + + +/* + this function locks SEP by locking the semaphore +*/ +int sep_lock(void); + +/* + this function unlocks SEP +*/ +void sep_unlock(void); + +/* + this function returns the address of the message shared area +*/ +void sep_map_shared_area(unsigned long *mappedAddr_ptr); + + +/* + this function returns the address of the message shared area +*/ +void sep_send_msg_rdy_cmd(void); + + +/* + This function releases all the application virtual + buffer physical pages, that were previously locked +*/ +int sep_free_dma_pages(struct page **page_array_ptr, + unsigned long num_pages, + unsigned long dirtyFlag); + +/* + This function creates the input and output dma tables for + symmetric operations (AES/DES) according to the block size + from LLI arays +*/ +int sep_construct_dma_tables_from_lli( + struct sep_lli_entry_t *lli_in_array, + unsigned long sep_in_lli_entries, + struct sep_lli_entry_t *lli_out_array, + unsigned long sep_out_lli_entries, + unsigned long block_size, + unsigned long *lli_table_in_ptr, + unsigned long *lli_table_out_ptr, + unsigned long *in_num_entries_ptr, + unsigned long *out_num_entries_ptr, + unsigned long *table_data_size_ptr); + +/* + This function builds input and output DMA tables for synhronic symmetric + operations (AES, DES) It also checks that each table is of the modular + block size +*/ +int sep_prepare_input_output_dma_table(unsigned long app_virt_in_addr, + unsigned long app_virt_out_addr, + unsigned long data_size, + unsigned long block_size, + unsigned long *lli_table_in_ptr, + unsigned long *lli_table_out_ptr, + unsigned long *in_num_entries_ptr, + unsigned long *out_num_entries_ptr, + unsigned long *table_data_size_ptr, + bool isKernelVirtualAddress); + +/* + This function prepares only input DMA table for synhronic symmetric + operations (HASH) +*/ +int sep_prepare_input_dma_table(unsigned long app_virt_addr, + unsigned long data_size, + unsigned long block_size, + unsigned long *lli_table_ptr, + unsigned long *num_entries_ptr, + unsigned long *table_data_size_ptr, + bool isKernelVirtualAddress); + +/* this functions frees all the resources that were allocated for the building + of the LLI DMA tables */ +void sep_free_dma_resources(void); + + +/* poll(suspend) , until reply from sep */ +void sep_driver_poll(void); + +/* + this function handles the request for freeing dma table for + synhronic actions +*/ +int sep_free_dma_table_data_handler(void); + + +#endif diff --git a/drivers/staging/sep/sep_driver_config.h b/drivers/staging/sep/sep_driver_config.h new file mode 100644 index 0000000..a796c49 --- /dev/null +++ b/drivers/staging/sep/sep_driver_config.h @@ -0,0 +1,305 @@ +/* + * + * sep_driver_config.h - Security Processor Driver configuration + * + * 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. + * + * CONTACTS: + * + * Mark Allyn mark.a.allyn@intel.com + * + * CHANGES: + * + * 2009.06.26 Initial publish + * + */ + +#ifndef __SEP_DRIVER_CONFIG_H__ +#define __SEP_DRIVER_CONFIG_H__ + + +/*-------------------------------------- + DRIVER CONFIGURATION FLAGS + -------------------------------------*/ + +/* if flag is on , then the driver is running in polling and + not interrupt mode */ +#define SEP_DRIVER_POLLING_MODE 1 + +/* flag which defines if the shared area address should be + reconfiged (send to SEP anew) during init of the driver */ +#define SEP_DRIVER_RECONFIG_MESSAGE_AREA 0 + +/* the mode for running on the ARM1172 Evaluation platform (flag is 1) */ +#define SEP_DRIVER_ARM_DEBUG_MODE 0 + +/*------------------------------------------- + INTERNAL DATA CONFIGURATION + -------------------------------------------*/ + +/* flag for the input array */ +#define SEP_DRIVER_IN_FLAG 0 + +/* flag for output array */ +#define SEP_DRIVER_OUT_FLAG 1 + +/* maximum number of entries in one LLI tables */ +#define SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP 8 + + +/*-------------------------------------------------------- + SHARED AREA memory total size is 36K + it is divided is following: + + SHARED_MESSAGE_AREA 8K } + } + STATIC_POOL_AREA 4K } MAPPED AREA ( 24 K) + } + DATA_POOL_AREA 12K } + + SYNCHRONIC_DMA_TABLES_AREA 5K + + FLOW_DMA_TABLES_AREA 4K + + SYSTEM_MEMORY_AREA 3k + + SYSTEM_MEMORY total size is 3k + it is divided as following: + + TIME_MEMORY_AREA 8B +-----------------------------------------------------------*/ + + + +/* + the maximum length of the message - the rest of the message shared + area will be dedicated to the dma lli tables +*/ +#define SEP_DRIVER_MAX_MESSAGE_SIZE_IN_BYTES (8 * 1024) + +/* the size of the message shared area in pages */ +#define SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES (8 * 1024) + +/* the size of the data pool static area in pages */ +#define SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES (4 * 1024) + +/* the size of the data pool shared area size in pages */ +#define SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES (12 * 1024) + +/* the size of the message shared area in pages */ +#define SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES (1024 * 5) + + +/* the size of the data pool shared area size in pages */ +#define SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES (1024 * 4) + +/* system data (time, caller id etc') pool */ +#define SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES 100 + + +/* area size that is mapped - we map the MESSAGE AREA, STATIC POOL and + DATA POOL areas. area must be module 4k */ +#define SEP_DRIVER_MMMAP_AREA_SIZE (1024 * 24) + + +/*----------------------------------------------- + offsets of the areas starting from the shared area start address +*/ + +/* message area offset */ +#define SEP_DRIVER_MESSAGE_AREA_OFFSET_IN_BYTES 0 + +/* static pool area offset */ +#define SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES \ + (SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES) + +/* data pool area offset */ +#define SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES \ + (SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES + \ + SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES) + +/* synhronic dma tables area offset */ +#define SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES \ + (SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + \ + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) + +/* sep driver flow dma tables area offset */ +#define SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES \ + (SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES + \ + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES) + +/* system memory offset in bytes */ +#define SEP_DRIVER_SYSTEM_DATA_MEMORY_OFFSET_IN_BYTES \ + (SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES + \ + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES) + +/* offset of the time area */ +#define SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES \ + (SEP_DRIVER_SYSTEM_DATA_MEMORY_OFFSET_IN_BYTES) + + + +/* start physical address of the SEP registers memory in HOST */ +#define SEP_IO_MEM_REGION_START_ADDRESS 0x80000000 + +/* size of the SEP registers memory region in HOST (for now 100 registers) */ +#define SEP_IO_MEM_REGION_SIZE (2 * 0x100000) + +/* define the number of IRQ for SEP interrupts */ +#define SEP_DIRVER_IRQ_NUM 1 + +/* maximum number of add buffers */ +#define SEP_MAX_NUM_ADD_BUFFERS 100 + +/* number of flows */ +#define SEP_DRIVER_NUM_FLOWS 4 + +/* maximum number of entries in flow table */ +#define SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE 25 + +/* offset of the num entries in the block length entry of the LLI */ +#define SEP_NUM_ENTRIES_OFFSET_IN_BITS 24 + +/* offset of the interrupt flag in the block length entry of the LLI */ +#define SEP_INT_FLAG_OFFSET_IN_BITS 31 + +/* mask for extracting data size from LLI */ +#define SEP_TABLE_DATA_SIZE_MASK 0xFFFFFF + +/* mask for entries after being shifted left */ +#define SEP_NUM_ENTRIES_MASK 0x7F + +/* default flow id */ +#define SEP_FREE_FLOW_ID 0xFFFFFFFF + +/* temp flow id used during cretiong of new flow until receiving + real flow id from sep */ +#define SEP_TEMP_FLOW_ID (SEP_DRIVER_NUM_FLOWS + 1) + +/* maximum add buffers message length in bytes */ +#define SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES (7 * 4) + +/* maximum number of concurrent virtual buffers */ +#define SEP_MAX_VIRT_BUFFERS_CONCURRENT 100 + +/* the token that defines the start of time address */ +#define SEP_TIME_VAL_TOKEN 0x12345678 +/* DEBUG LEVEL MASKS */ +#define SEP_DEBUG_LEVEL_BASIC 0x1 + +#define SEP_DEBUG_LEVEL_REGISTERS 0x2 + +#define SEP_DEBUG_LEVEL_EXTENDED 0x4 + + +/* FUNCTIONAL MACROS */ + +/* debug macro without paramaters */ +#define DEBUG_PRINT_0(DEBUG_LEVEL , info) \ +do { \ + if (DEBUG_LEVEL & sepDebug) \ + printk(KERN_WARNING info); \ +} while (0) + +/* debug macro with 1 paramater */ +#define DEBUG_PRINT_1(DEBUG_LEVEL , info , param1) \ +do { \ + if (DEBUG_LEVEL & sepDebug) \ + printk(KERN_WARNING info, param1); \ +} while (0) + +/* debug macro with 2 paramaters */ +#define DEBUG_PRINT_2(DEBUG_LEVEL, info, param1, param2) \ +do { \ + if (DEBUG_LEVEL & sepDebug) \ + printk(KERN_WARNING info , param1, param2); \ +} while (0) + +/* debug macro with 3 paramaters */ +#define DEBUG_PRINT_3(DEBUG_LEVEL, info, param1, param2, param3) \ +do { \ + if (DEBUG_LEVEL & sepDebug) \ + printk(KERN_WARNING info , param1, param2 , param3); \ +} while (0) + +/* debug macro with 4 paramaters */ +#define DEBUG_PRINT_4(DEBUG_LEVEL, info, param1, param2, param3, param4) \ +do { \ + if (DEBUG_LEVEL & sepDebug) \ + printk(KERN_WARNING info, param1, param2, param3, param4); \ +} while (0) + +#if 0 +/* write register macro with option for debug print */ +#define SEP_WRITE_REGISTER(address, value) \ +do { \ + if (sepDebug & SEP_DEBUG_LEVEL_REGISTERS) \ + printk(KERN_WARNING "Write Register: address %lu value %lu\n", \ + (unsigned long)(address), (unsigned long)(value)); \ + writel((value), (void *)(address)); \ +} while (0) + +/* read register macro with option for debug print */ +#define SEP_READ_REGISTER(address , value) \ +do { \ + (value) = readl((void *)(address)); \ + if (sepDebug & SEP_DEBUG_LEVEL_REGISTERS) \ + printk(KERN_WARNING "Read Register: address %lu value %lu\n", \ + (address), (value)); \ +} while (0) +#else + +#if 1 + +#define SEP_WRITE_REGISTER(address, value) writel((value), (void *)(address)) +#define SEP_READ_REGISTER(address, value) (value) = readl((void *)(address)) +#endif + +#endif + +#if 0 +#define SEP_WRITE_ROM(address, value) writel((value), (void *)(address)) + +#define SEP_WRITE_REGISTER(address, value) \ +do { \ + unsigned long i; \ + for (i = 0; i < 1000; i++); \ + writel((value), (void *)(address)); \ +} while (0) + + +#define SEP_READ_REGISTER(address , value) \ +do { \ + unsigned long i; \ + for (i = 0; i < 1000; i++); \ + (value) = readl((void *) (address)); \ +} while (0) + +#endif + +/* wait for SRAM write complete(indirect write */ +#define SEP_WAIT_SRAM_WRITE_COMPLETE() \ +do { \ + unsigned long reg_val; \ + do { \ + SEP_READ_REGISTER(g_sep_reg_base_address + \ + HW_SRAM_DATA_READY_REG_ADDR, (reg_val)); \ + } while (!(reg_val & 0x1)); \ +} while (0) + +#endif diff --git a/drivers/staging/sep/sep_driver_ext_api.h b/drivers/staging/sep/sep_driver_ext_api.h new file mode 100644 index 0000000..3bc3b4d --- /dev/null +++ b/drivers/staging/sep/sep_driver_ext_api.h @@ -0,0 +1,106 @@ +/* + * + * sep_driver_ext_api.h - Security Processor Driver external api definitions + * + * 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. + * + * CONTACTS: + * + * Mark Allyn mark.a.allyn@intel.com + * + * CHANGES: + * + * 2009.06.26 Initial publish + * + */ + +#ifndef __SEP_DRIVER_EXT_API_H__ +#define __SEP_DRIVER_EXT_API_H__ + + +/* shared variables */ +extern int sepDebug; + +extern unsigned long g_sep_reg_base_address; + +/* +this function loads the ROM code in SEP (needed only in the debug mode on FPGA) +*/ +void sep_load_rom_code(void); + +/* +This functions locks the area of the resident and cache sep code (if possible) +*/ +void sep_lock_cache_resident_area(void); + +/* +This functions copies the cache and resident from their source location into +destination memory, which is external to Linux VM and is given as physical +address +*/ +int sep_copy_cache_resident_to_area(unsigned long src_cache_addr, + unsigned long cache_size_in_bytes, + unsigned long src_resident_addr, + unsigned long resident_size_in_bytes, + unsigned long *dst_new_cache_addr_ptr, + unsigned long *dst_new_resident_addr_ptr); + +/* +This functions maps and allocates the shared area on the external +RAM (device) The input is shared_area_size - the size of the memory +to allocate. The outputs are kernel_shared_area_addr_ptr - the kerenl +address of the mapped and allocated shared area, and +phys_shared_area_addr_ptr - the physical address of the shared area +*/ +int sep_map_and_alloc_shared_area(unsigned long shared_area_size, + unsigned long *kernel_shared_area_addr_ptr, + unsigned long *phys_shared_area_addr_ptr); + +/* +This functions unmaps and deallocates the shared area on the external +RAM (device) The input is shared_area_size - the size of the memory to +deallocate,kernel_shared_area_addr_ptr - the kernel address of the +mapped and allocated shared area,phys_shared_area_addr_ptr - the physical +address of the shared area +*/ +void sep_unmap_and_free_shared_area(unsigned long shared_area_size, + unsigned long kernel_shared_area_addr, + unsigned long phys_shared_area_addr); + + +/* +This functions returns the physical address inside shared area according +to the virtual address. It can be either on the externa RAM device +(ioremapped), or on the system RAM +*/ +unsigned long sep_shared_area_virt_to_phys(unsigned long virt_address); + +/* +This functions returns the vitrual address inside shared area according +to the physical address. It can be either on the externa RAM device +(ioremapped), or on the system RAM This implementation is for the external RAM +*/ +unsigned long sep_shared_area_phys_to_virt(unsigned long phys_address); + +/* +This function registers th driver to the device +subsystem (either PCI, USB, etc) +*/ +int sep_register_driver_to_device(void); + +#endif /*__SEP_DRIVER_EXT_API_H__*/ diff --git a/drivers/staging/sep/sep_driver_hw_defs.h b/drivers/staging/sep/sep_driver_hw_defs.h new file mode 100644 index 0000000..df831be --- /dev/null +++ b/drivers/staging/sep/sep_driver_hw_defs.h @@ -0,0 +1,240 @@ +/* + * + * sep_driver_hw_defs.h - Security Processor Driver hardware definitions + * + * 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. + * + * CONTACTS: + * + * Mark Allyn mark.a.allyn@intel.com + * + * CHANGES: + * + * 2009.06.26 Initial publish + * + */ + +#ifndef SEP_DRIVER_HW_DEFS__H +#define SEP_DRIVER_HW_DEFS__H + +/*--------------------------------------------------------------------------*/ +/* Abstract: HW Registers Defines. */ +/* */ +/* Note: This file was automatically created !!! */ +/* DO NOT EDIT THIS FILE !!! */ +/*--------------------------------------------------------------------------*/ + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* cf registers */ +#define HW_R0B_ADDR_0_REG_ADDR 0x0000UL +#define HW_R0B_ADDR_1_REG_ADDR 0x0004UL +#define HW_R0B_ADDR_2_REG_ADDR 0x0008UL +#define HW_R0B_ADDR_3_REG_ADDR 0x000cUL +#define HW_R0B_ADDR_4_REG_ADDR 0x0010UL +#define HW_R0B_ADDR_5_REG_ADDR 0x0014UL +#define HW_R0B_ADDR_6_REG_ADDR 0x0018UL +#define HW_R0B_ADDR_7_REG_ADDR 0x001cUL +#define HW_R0B_ADDR_8_REG_ADDR 0x0020UL +#define HW_R2B_ADDR_0_REG_ADDR 0x0080UL +#define HW_R2B_ADDR_1_REG_ADDR 0x0084UL +#define HW_R2B_ADDR_2_REG_ADDR 0x0088UL +#define HW_R2B_ADDR_3_REG_ADDR 0x008cUL +#define HW_R2B_ADDR_4_REG_ADDR 0x0090UL +#define HW_R2B_ADDR_5_REG_ADDR 0x0094UL +#define HW_R2B_ADDR_6_REG_ADDR 0x0098UL +#define HW_R2B_ADDR_7_REG_ADDR 0x009cUL +#define HW_R2B_ADDR_8_REG_ADDR 0x00a0UL +#define HW_R3B_REG_ADDR 0x00C0UL +#define HW_R4B_REG_ADDR 0x0100UL +#define HW_CSA_ADDR_0_REG_ADDR 0x0140UL +#define HW_CSA_ADDR_1_REG_ADDR 0x0144UL +#define HW_CSA_ADDR_2_REG_ADDR 0x0148UL +#define HW_CSA_ADDR_3_REG_ADDR 0x014cUL +#define HW_CSA_ADDR_4_REG_ADDR 0x0150UL +#define HW_CSA_ADDR_5_REG_ADDR 0x0154UL +#define HW_CSA_ADDR_6_REG_ADDR 0x0158UL +#define HW_CSA_ADDR_7_REG_ADDR 0x015cUL +#define HW_CSA_ADDR_8_REG_ADDR 0x0160UL +#define HW_CSA_REG_ADDR 0x0140UL +#define HW_SINB_REG_ADDR 0x0180UL +#define HW_SOUTB_REG_ADDR 0x0184UL +#define HW_PKI_CONTROL_REG_ADDR 0x01C0UL +#define HW_PKI_STATUS_REG_ADDR 0x01C4UL +#define HW_PKI_BUSY_REG_ADDR 0x01C8UL +#define HW_PKI_A_1025_REG_ADDR 0x01CCUL +#define HW_PKI_SDMA_CTL_REG_ADDR 0x01D0UL +#define HW_PKI_SDMA_OFFSET_REG_ADDR 0x01D4UL +#define HW_PKI_SDMA_POINTERS_REG_ADDR 0x01D8UL +#define HW_PKI_SDMA_DLENG_REG_ADDR 0x01DCUL +#define HW_PKI_SDMA_EXP_POINTERS_REG_ADDR 0x01E0UL +#define HW_PKI_SDMA_RES_POINTERS_REG_ADDR 0x01E4UL +#define HW_PKI_CLR_REG_ADDR 0x01E8UL +#define HW_PKI_SDMA_BUSY_REG_ADDR 0x01E8UL +#define HW_PKI_SDMA_FIRST_EXP_N_REG_ADDR 0x01ECUL +#define HW_PKI_SDMA_MUL_BY1_REG_ADDR 0x01F0UL +#define HW_PKI_SDMA_RMUL_SEL_REG_ADDR 0x01F4UL +#define HW_DES_KEY_0_REG_ADDR 0x0208UL +#define HW_DES_KEY_1_REG_ADDR 0x020CUL +#define HW_DES_KEY_2_REG_ADDR 0x0210UL +#define HW_DES_KEY_3_REG_ADDR 0x0214UL +#define HW_DES_KEY_4_REG_ADDR 0x0218UL +#define HW_DES_KEY_5_REG_ADDR 0x021CUL +#define HW_DES_CONTROL_0_REG_ADDR 0x0220UL +#define HW_DES_CONTROL_1_REG_ADDR 0x0224UL +#define HW_DES_IV_0_REG_ADDR 0x0228UL +#define HW_DES_IV_1_REG_ADDR 0x022CUL +#define HW_AES_KEY_0_ADDR_0_REG_ADDR 0x0400UL +#define HW_AES_KEY_0_ADDR_1_REG_ADDR 0x0404UL +#define HW_AES_KEY_0_ADDR_2_REG_ADDR 0x0408UL +#define HW_AES_KEY_0_ADDR_3_REG_ADDR 0x040cUL +#define HW_AES_KEY_0_ADDR_4_REG_ADDR 0x0410UL +#define HW_AES_KEY_0_ADDR_5_REG_ADDR 0x0414UL +#define HW_AES_KEY_0_ADDR_6_REG_ADDR 0x0418UL +#define HW_AES_KEY_0_ADDR_7_REG_ADDR 0x041cUL +#define HW_AES_KEY_0_REG_ADDR 0x0400UL +#define HW_AES_IV_0_ADDR_0_REG_ADDR 0x0440UL +#define HW_AES_IV_0_ADDR_1_REG_ADDR 0x0444UL +#define HW_AES_IV_0_ADDR_2_REG_ADDR 0x0448UL +#define HW_AES_IV_0_ADDR_3_REG_ADDR 0x044cUL +#define HW_AES_IV_0_REG_ADDR 0x0440UL +#define HW_AES_CTR1_ADDR_0_REG_ADDR 0x0460UL +#define HW_AES_CTR1_ADDR_1_REG_ADDR 0x0464UL +#define HW_AES_CTR1_ADDR_2_REG_ADDR 0x0468UL +#define HW_AES_CTR1_ADDR_3_REG_ADDR 0x046cUL +#define HW_AES_CTR1_REG_ADDR 0x0460UL +#define HW_AES_SK_REG_ADDR 0x0478UL +#define HW_AES_MAC_OK_REG_ADDR 0x0480UL +#define HW_AES_PREV_IV_0_ADDR_0_REG_ADDR 0x0490UL +#define HW_AES_PREV_IV_0_ADDR_1_REG_ADDR 0x0494UL +#define HW_AES_PREV_IV_0_ADDR_2_REG_ADDR 0x0498UL +#define HW_AES_PREV_IV_0_ADDR_3_REG_ADDR 0x049cUL +#define HW_AES_PREV_IV_0_REG_ADDR 0x0490UL +#define HW_AES_CONTROL_REG_ADDR 0x04C0UL +#define HW_HASH_H0_REG_ADDR 0x0640UL +#define HW_HASH_H1_REG_ADDR 0x0644UL +#define HW_HASH_H2_REG_ADDR 0x0648UL +#define HW_HASH_H3_REG_ADDR 0x064CUL +#define HW_HASH_H4_REG_ADDR 0x0650UL +#define HW_HASH_H5_REG_ADDR 0x0654UL +#define HW_HASH_H6_REG_ADDR 0x0658UL +#define HW_HASH_H7_REG_ADDR 0x065CUL +#define HW_HASH_H8_REG_ADDR 0x0660UL +#define HW_HASH_H9_REG_ADDR 0x0664UL +#define HW_HASH_H10_REG_ADDR 0x0668UL +#define HW_HASH_H11_REG_ADDR 0x066CUL +#define HW_HASH_H12_REG_ADDR 0x0670UL +#define HW_HASH_H13_REG_ADDR 0x0674UL +#define HW_HASH_H14_REG_ADDR 0x0678UL +#define HW_HASH_H15_REG_ADDR 0x067CUL +#define HW_HASH_CONTROL_REG_ADDR 0x07C0UL +#define HW_HASH_PAD_EN_REG_ADDR 0x07C4UL +#define HW_HASH_PAD_CFG_REG_ADDR 0x07C8UL +#define HW_HASH_CUR_LEN_0_REG_ADDR 0x07CCUL +#define HW_HASH_CUR_LEN_1_REG_ADDR 0x07D0UL +#define HW_HASH_CUR_LEN_2_REG_ADDR 0x07D4UL +#define HW_HASH_CUR_LEN_3_REG_ADDR 0x07D8UL +#define HW_HASH_PARAM_REG_ADDR 0x07DCUL +#define HW_HASH_INT_BUSY_REG_ADDR 0x07E0UL +#define HW_HASH_SW_RESET_REG_ADDR 0x07E4UL +#define HW_HASH_ENDIANESS_REG_ADDR 0x07E8UL +#define HW_HASH_DATA_REG_ADDR 0x07ECUL +#define HW_DRNG_CONTROL_REG_ADDR 0x0800UL +#define HW_DRNG_VALID_REG_ADDR 0x0804UL +#define HW_DRNG_DATA_REG_ADDR 0x0808UL +#define HW_RND_SRC_EN_REG_ADDR 0x080CUL +#define HW_AES_CLK_ENABLE_REG_ADDR 0x0810UL +#define HW_DES_CLK_ENABLE_REG_ADDR 0x0814UL +#define HW_HASH_CLK_ENABLE_REG_ADDR 0x0818UL +#define HW_PKI_CLK_ENABLE_REG_ADDR 0x081CUL +#define HW_CLK_STATUS_REG_ADDR 0x0824UL +#define HW_CLK_ENABLE_REG_ADDR 0x0828UL +#define HW_DRNG_SAMPLE_REG_ADDR 0x0850UL +#define HW_RND_SRC_CTL_REG_ADDR 0x0858UL +#define HW_CRYPTO_CTL_REG_ADDR 0x0900UL +#define HW_CRYPTO_STATUS_REG_ADDR 0x090CUL +#define HW_CRYPTO_BUSY_REG_ADDR 0x0910UL +#define HW_AES_BUSY_REG_ADDR 0x0914UL +#define HW_DES_BUSY_REG_ADDR 0x0918UL +#define HW_HASH_BUSY_REG_ADDR 0x091CUL +#define HW_CONTENT_REG_ADDR 0x0924UL +#define HW_VERSION_REG_ADDR 0x0928UL +#define HW_CONTEXT_ID_REG_ADDR 0x0930UL +#define HW_DIN_BUFFER_REG_ADDR 0x0C00UL +#define HW_DIN_MEM_DMA_BUSY_REG_ADDR 0x0c20UL +#define HW_SRC_LLI_MEM_ADDR_REG_ADDR 0x0c24UL +#define HW_SRC_LLI_WORD0_REG_ADDR 0x0C28UL +#define HW_SRC_LLI_WORD1_REG_ADDR 0x0C2CUL +#define HW_SRAM_SRC_ADDR_REG_ADDR 0x0c30UL +#define HW_DIN_SRAM_BYTES_LEN_REG_ADDR 0x0c34UL +#define HW_DIN_SRAM_DMA_BUSY_REG_ADDR 0x0C38UL +#define HW_WRITE_ALIGN_REG_ADDR 0x0C3CUL +#define HW_OLD_DATA_REG_ADDR 0x0C48UL +#define HW_WRITE_ALIGN_LAST_REG_ADDR 0x0C4CUL +#define HW_DOUT_BUFFER_REG_ADDR 0x0C00UL +#define HW_DST_LLI_WORD0_REG_ADDR 0x0D28UL +#define HW_DST_LLI_WORD1_REG_ADDR 0x0D2CUL +#define HW_DST_LLI_MEM_ADDR_REG_ADDR 0x0D24UL +#define HW_DOUT_MEM_DMA_BUSY_REG_ADDR 0x0D20UL +#define HW_SRAM_DEST_ADDR_REG_ADDR 0x0D30UL +#define HW_DOUT_SRAM_BYTES_LEN_REG_ADDR 0x0D34UL +#define HW_DOUT_SRAM_DMA_BUSY_REG_ADDR 0x0D38UL +#define HW_READ_ALIGN_REG_ADDR 0x0D3CUL +#define HW_READ_LAST_DATA_REG_ADDR 0x0D44UL +#define HW_RC4_THRU_CPU_REG_ADDR 0x0D4CUL +#define HW_AHB_SINGLE_REG_ADDR 0x0E00UL +#define HW_SRAM_DATA_REG_ADDR 0x0F00UL +#define HW_SRAM_ADDR_REG_ADDR 0x0F04UL +#define HW_SRAM_DATA_READY_REG_ADDR 0x0F08UL +#define HW_HOST_IRR_REG_ADDR 0x0A00UL +#define HW_HOST_IMR_REG_ADDR 0x0A04UL +#define HW_HOST_ICR_REG_ADDR 0x0A08UL +#define HW_HOST_SEP_SRAM_THRESHOLD_REG_ADDR 0x0A10UL +#define HW_HOST_SEP_BUSY_REG_ADDR 0x0A14UL +#define HW_HOST_SEP_LCS_REG_ADDR 0x0A18UL +#define HW_HOST_CC_SW_RST_REG_ADDR 0x0A40UL +#define HW_HOST_SEP_SW_RST_REG_ADDR 0x0A44UL +#define HW_HOST_FLOW_DMA_SW_INT0_REG_ADDR 0x0A80UL +#define HW_HOST_FLOW_DMA_SW_INT1_REG_ADDR 0x0A84UL +#define HW_HOST_FLOW_DMA_SW_INT2_REG_ADDR 0x0A88UL +#define HW_HOST_FLOW_DMA_SW_INT3_REG_ADDR 0x0A8cUL +#define HW_HOST_FLOW_DMA_SW_INT4_REG_ADDR 0x0A90UL +#define HW_HOST_FLOW_DMA_SW_INT5_REG_ADDR 0x0A94UL +#define HW_HOST_FLOW_DMA_SW_INT6_REG_ADDR 0x0A98UL +#define HW_HOST_FLOW_DMA_SW_INT7_REG_ADDR 0x0A9cUL +#define HW_HOST_SEP_HOST_GPR0_REG_ADDR 0x0B00UL +#define HW_HOST_SEP_HOST_GPR1_REG_ADDR 0x0B04UL +#define HW_HOST_SEP_HOST_GPR2_REG_ADDR 0x0B08UL +#define HW_HOST_SEP_HOST_GPR3_REG_ADDR 0x0B0CUL +#define HW_HOST_HOST_SEP_GPR0_REG_ADDR 0x0B80UL +#define HW_HOST_HOST_SEP_GPR1_REG_ADDR 0x0B84UL +#define HW_HOST_HOST_SEP_GPR2_REG_ADDR 0x0B88UL +#define HW_HOST_HOST_SEP_GPR3_REG_ADDR 0x0B8CUL +#define HW_HOST_HOST_ENDIAN_REG_ADDR 0x0B90UL +#define HW_HOST_HOST_COMM_CLK_EN_REG_ADDR 0x0B94UL +#define HW_CLR_SRAM_BUSY_REG_REG_ADDR 0x0F0CUL +#define HW_CC_SRAM_BASE_ADDRESS 0x5800UL + +#ifdef __cplusplus +} +#endif + +#endif /* ifndef HW_DEFS */ diff --git a/drivers/staging/sep/sep_ext_with_pci_driver.c b/drivers/staging/sep/sep_ext_with_pci_driver.c new file mode 100644 index 0000000..9fb1dd0 --- /dev/null +++ b/drivers/staging/sep/sep_ext_with_pci_driver.c @@ -0,0 +1,631 @@ +/* + * + * sep_ext_with_pci_driver.c - Security Processor Driver + * pci initialization functions + * + * 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. + * + * CONTACTS: + * + * Mark Allyn mark.a.allyn@intel.com + * + * CHANGES: + * + * 2009.06.26 Initial publish + * + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/cdev.h> +#include <linux/kdev_t.h> +#include <linux/semaphore.h> +#include <linux/mm.h> +#include <linux/poll.h> +#include <linux/wait.h> +#include <linux/ioctl.h> +#include <linux/ioport.h> +#include <linux/io.h> +#include <linux/interrupt.h> +#include <linux/pagemap.h> +#include <linux/pci.h> +#include <linux/firmware.h> +#include <linux/sched.h> +#include "sep_driver_hw_defs.h" +#include "sep_driver_config.h" +#include "sep_driver_api.h" +#include "sep_driver_ext_api.h" + +#if SEP_DRIVER_ARM_DEBUG_MODE + +#define CRYS_SEP_ROM_length 0x4000 + +#define CRYS_SEP_ROM_start_address 0x8000C000UL + +#define CRYS_SEP_ROM_start_address_offset 0xC000UL + +#define SEP_ROM_BANK_register 0x80008420UL + +#define SEP_ROM_BANK_register_offset 0x8420UL + +#define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0x82000000 + +/* 2M size */ +/* #define SEP_RAR_IO_MEM_REGION_SIZE (1024*1024*2) + +static unsigned long CRYS_SEP_ROM[] = { + #include "SEP_ROM_image.h" +}; + +#else +*/ + +/*------------- + THOSE 2 definitions are specific to the board - must be + defined during integration +---------------*/ +#define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0xFF0D0000 + +/* 2M size */ + +#endif /* SEP_DRIVER_ARM_DEBUG_MODE */ + +#define BASE_ADDRESS_FOR_SYSTEM 0xfffc0000 +#define SEP_RAR_IO_MEM_REGION_SIZE 0x40000 + +irqreturn_t sep_inthandler(int irq , void* dev_id); + +/* NOTE - must be defined specific to the board */ +#define VENDOR_ID 0x8086 + +/* io memory (register area) */ +static unsigned long io_memory_start_physical_address; +static unsigned long io_memory_end_physical_address; +static unsigned long io_memory_size; +void *io_memory_start_virtual_address; + +/* restricted access region */ +static unsigned long rar_physical_address; +static void *rar_virtual_address; + +/* shared memory region */ +static unsigned long shared_physical_address; +static void *shared_virtual_address; + +/* firmware regions */ +static unsigned long cache_physical_address; +static unsigned long cache_size; +static void *cache_virtual_address; + +static unsigned long resident_physical_address; +static unsigned long resident_size; +static void *resident_virtual_address; + +/* device interrupt (as retrieved from PCI) */ +int sep_irq; + +/* temporary */ +unsigned long jiffies_future; + +/*----------------------------- + private functions +--------------------------------*/ + +/* + function that is activated on the succesfull probe of the SEP device +*/ +static int __devinit sep_probe(struct pci_dev *pdev, + const struct pci_device_id *ent); + +static struct pci_device_id sep_pci_id_tbl[] = { + { PCI_DEVICE(VENDOR_ID, 0x080c) }, + { 0 } +}; + +MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl); + +static unsigned long rar_region_addr; + + +/* field for registering driver to PCI device */ +static struct pci_driver sep_pci_driver = { + .name = "sep_sec_driver", + .id_table = sep_pci_id_tbl, + .probe = sep_probe +}; + +/* pointer to pci dev received during probe */ +struct pci_dev *sep_pci_dev_ptr; + +/* + This functions locks the area of the resisnd and cache sep code +*/ +void sep_lock_cache_resident_area(void) +{ + return; +} + + +/* + This functions copies the cache and resident from their source location into + destination memory, which is external to Linux VM and is given as + physical address +*/ +int sep_copy_cache_resident_to_area(unsigned long src_cache_addr, + unsigned long cache_size_in_bytes, + unsigned long src_resident_addr, + unsigned long resident_size_in_bytes, + unsigned long *dst_new_cache_addr_ptr, + unsigned long *dst_new_resident_addr_ptr) +{ + /* resident address in user space */ + unsigned long resident_addr; + + /* cahce address in user space */ + unsigned long cache_addr; + + const struct firmware *fw; + + char *cache_name = "cache.image.bin"; + char *res_name = "resident.image.bin"; + + /* error */ + int error; + + /*-------------------------------- + CODE + -------------------------------------*/ + error = 0; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:rar_virtual is %p\n", + rar_virtual_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:rar_physical is %08lx\n", + rar_physical_address); + + rar_region_addr = (unsigned long)rar_virtual_address; + + cache_physical_address = rar_physical_address; + cache_virtual_address = rar_virtual_address; + + /* load cache */ + error = request_firmware(&fw, cache_name, &sep_pci_dev_ptr->dev); + if (error) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cant request cache fw\n"); + goto end_function; + } + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cache data loc is %p\n", + (void *)fw->data); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cache data size is %08x\n", + fw->size); + + memcpy((void *)cache_virtual_address, (void *)fw->data, fw->size); + + cache_size = fw->size; + + cache_addr = (unsigned long)cache_virtual_address; + + release_firmware(fw); + + resident_physical_address = cache_physical_address+cache_size; + resident_virtual_address = cache_virtual_address+cache_size; + + /* load resident */ + error = request_firmware(&fw, res_name, &sep_pci_dev_ptr->dev); + if (error) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cant request res fw\n"); + goto end_function; + } + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:res data loc is %p\n", + (void *)fw->data); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:res data size is %08x\n", + fw->size); + + memcpy((void *)resident_virtual_address, (void *)fw->data, fw->size); + + resident_size = fw->size; + + release_firmware(fw); + + resident_addr = (unsigned long)resident_virtual_address; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:resident_addr (physical )is %08lx\n", + resident_physical_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cache_addr (physical) is %08lx\n", + cache_physical_address); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:resident_addr (logical )is %08lx\n", + resident_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cache_addr (logical) is %08lx\n", + cache_addr); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:resident_size is %08lx\n", resident_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cache_size is %08lx\n", cache_size); + + + + /* physical addresses */ + *dst_new_cache_addr_ptr = cache_physical_address; + *dst_new_resident_addr_ptr = resident_physical_address; + +end_function: + + return error; +} + +/* + This functions maps and allocates the + shared area on the external RAM (device) + The input is shared_area_size - the size of the memory to + allocate. The outputs + are kernel_shared_area_addr_ptr - the kerenl + address of the mapped and allocated + shared area, and phys_shared_area_addr_ptr + - the physical address of the shared area +*/ +int sep_map_and_alloc_shared_area(unsigned long shared_area_size, + unsigned long *kernel_shared_area_addr_ptr, + unsigned long *phys_shared_area_addr_ptr) +{ + // shared_virtual_address = ioremap_nocache(0xda00000,shared_area_size); + shared_virtual_address = kmalloc(shared_area_size, GFP_KERNEL); + if (!shared_virtual_address) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "sep_driver:shared memory kmalloc failed\n"); + return -1; + } + + shared_physical_address = __pa(shared_virtual_address); + // shared_physical_address = 0xda00000; + + *kernel_shared_area_addr_ptr = (unsigned long)shared_virtual_address; + /* set the physical address of the shared area */ + *phys_shared_area_addr_ptr = shared_physical_address; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:shared_virtual_address is %p\n", + shared_virtual_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:shared_region_size is %08lx\n", + shared_area_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:shared_physical_addr is %08lx\n", + *phys_shared_area_addr_ptr); + + return 0; +} + +/* + This functions unmaps and deallocates the shared area + on the external RAM (device) + The input is shared_area_size - the size of the memory to deallocate,kernel_ + shared_area_addr_ptr - the kernel address of the mapped and allocated + shared area,phys_shared_area_addr_ptr - the physical address of + the shared area +*/ +void sep_unmap_and_free_shared_area(unsigned long shared_area_size, + unsigned long kernel_shared_area_addr, + unsigned long phys_shared_area_addr) +{ + kfree((void *)kernel_shared_area_addr); + return; +} + +/* + This functions returns the physical address inside shared area according + to the virtual address. It can be either on the externa RAM device + (ioremapped), or on the system RAM + This implementation is for the external RAM +*/ +unsigned long sep_shared_area_virt_to_phys(unsigned long virt_address) +{ + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:sh virt to phys v %08lx\n", + virt_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:sh virt to phys p %08lx\n", + shared_physical_address + + (virt_address - (unsigned long)shared_virtual_address)); + + return (unsigned long)shared_physical_address + + (virt_address - (unsigned long)shared_virtual_address); +} + +/* + This functions returns the virtual address inside shared area + according to the physical address. It can be either on the + externa RAM device (ioremapped), or on the system RAM This implementation + is for the external RAM +*/ +unsigned long sep_shared_area_phys_to_virt(unsigned long phys_address) +{ + return (unsigned long)shared_virtual_address + + (phys_address - shared_physical_address); +} + + +/* + function that is activaed on the succesfull probe of the SEP device +*/ +static int __devinit sep_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + /* error */ + int error; + + /*------------------------ + CODE + ---------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "Sep pci probe starting\n"); + error = 0; + + /* enable the device */ + error = pci_enable_device(pdev); + if (error) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "error enabling pci device\n"); + goto end_function; + } + + /* set the pci dev pointer */ + sep_pci_dev_ptr = pdev; + + /* get the io memory start address */ + io_memory_start_physical_address = pci_resource_start(pdev, 0); + if (!io_memory_start_physical_address) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver error pci resource start\n"); + goto end_function; + } + + /* get the io memory end address */ + io_memory_end_physical_address = pci_resource_end(pdev, 0); + if (!io_memory_end_physical_address) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver error pci resource end\n"); + goto end_function; + } + + io_memory_size = io_memory_end_physical_address - + io_memory_start_physical_address + 1; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:io_memory_start_physical_address is %08lx\n", + io_memory_start_physical_address); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:io_memory_end_phyaical_address is %08lx\n", + io_memory_end_physical_address); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:io_memory_size is %08lx\n", + io_memory_size); + + io_memory_start_virtual_address = + ioremap_nocache(io_memory_start_physical_address, + io_memory_size); + if (!io_memory_start_virtual_address) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver error ioremap of io memory\n"); + goto end_function; + } + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:io_memory_start_virtual_address is %p\n", + io_memory_start_virtual_address); + + g_sep_reg_base_address = (unsigned long)io_memory_start_virtual_address; + + + /* set up system base address and shared memory location */ + + rar_virtual_address = kmalloc(2 * SEP_RAR_IO_MEM_REGION_SIZE, + GFP_KERNEL); + + if (!rar_virtual_address) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:cant kmalloc rar\n"); + goto end_function; + } + + rar_physical_address = __pa(rar_virtual_address); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:rar_physical is %08lx\n", + rar_physical_address); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:rar_virtual is %p\n", + rar_virtual_address); + + +#if !SEP_DRIVER_POLLING_MODE + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: about to write IMR and ICR REG_ADDR\n"); + + /* clear ICR register */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_ICR_REG_ADDR, + 0xFFFFFFFF); + + /* set the IMR register - open only GPR 2 */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_IMR_REG_ADDR, + (~(0x1 << 13))); + + /* figure out our irq */ + error = pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, (u8 *)&sep_irq); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: my irq is %d\n", sep_irq); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: about to call request_irq\n"); + /* get the interrupt line */ + error = request_irq(sep_irq, sep_inthandler, IRQF_SHARED, + "sep_driver", &g_sep_reg_base_address); + if (error) + goto end_function; + + goto end_function; + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: about to write IMR REG_ADDR"); + + /* set the IMR register - open only GPR 2 */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_IMR_REG_ADDR, + (~(0x1 << 13))); + +#endif /* SEP_DRIVER_POLLING_MODE */ + +end_function: + + return error; +} + +/* + this function registers th driver to + the device subsystem( either PCI, USB, etc) +*/ +int sep_register_driver_to_device(void) +{ + return pci_register_driver(&sep_pci_driver); +} + + + +void sep_load_rom_code() +{ +#if SEP_DRIVER_ARM_DEBUG_MODE + /* Index variables */ + unsigned long i, k, j; + unsigned long regVal; + unsigned long Error; + unsigned long warning; + + /* Loading ROM from SEP_ROM_image.h file */ + k = sizeof(CRYS_SEP_ROM); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: DX_CC_TST_SepRomLoader start\n"); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: k is %lu\n", k); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: g_sep_reg_base_address is %p\n", + g_sep_reg_base_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: CRYS_SEP_ROM_start_address_offset is %p\n", + CRYS_SEP_ROM_start_address_offset); + + for (i = 0; i < 4; i++) { + /* write bank */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + + SEP_ROM_BANK_register_offset, i); + + for (j = 0; j < CRYS_SEP_ROM_length / 4; j++) { + SEP_WRITE_REGISTER(g_sep_reg_base_address + + CRYS_SEP_ROM_start_address_offset + 4*j, + CRYS_SEP_ROM[i * 0x1000 + j]); + + k = k - 4; + + if (k == 0) { + j = CRYS_SEP_ROM_length; + i = 4; + } + } + } + + /* reset the SEP*/ + SEP_WRITE_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_SW_RST_REG_ADDR, 0x1); + + /* poll for SEP ROM boot finish */ + do { + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR3_REG_ADDR, regVal); + } while (!regVal); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: ROM polling ended\n"); + + switch (regVal) { + case 0x1: + /* fatal error - read erro status from GPRO */ + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR0_REG_ADDR, Error); + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: ROM polling case 1\n"); + break; + case 0x2: + /* Boot First Phase ended */ + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR0_REG_ADDR, warning); + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: ROM polling case 2\n"); + break; + case 0x4: + /* Cold boot ended successfully */ + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR0_REG_ADDR, warning); + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: ROM polling case 4\n"); + Error = 0; + break; + case 0x8: + /* Warmboot ended successfully */ + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR0_REG_ADDR, warning); + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: ROM polling case 8\n"); + Error = 0; + break; + case 0x10: + /* ColdWarm boot ended successfully */ + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR0_REG_ADDR, warning); + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: ROM polling case 16\n"); + Error = 0; + break; + case 0x20: + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: ROM polling case 32\n"); + break; + } + +#endif +} + diff --git a/drivers/staging/sep/sep_main_mod.c b/drivers/staging/sep/sep_main_mod.c new file mode 100644 index 0000000..158c462 --- /dev/null +++ b/drivers/staging/sep/sep_main_mod.c @@ -0,0 +1,3919 @@ +/* + * + * sep_main_mod.c - Security Processor Driver main group of functions + * + * 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. + * + * CONTACTS: + * + * Mark Allyn mark.a.allyn@intel.com + * + * CHANGES: + * + * 2009.06.26 Initial publish + * + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/cdev.h> +#include <linux/kdev_t.h> +#include <linux/mutex.h> +#include <linux/mm.h> +#include <linux/poll.h> +#include <linux/wait.h> +#include <asm/ioctl.h> +#include <linux/ioport.h> +#include <asm/io.h> +#include <linux/interrupt.h> +#include <linux/pagemap.h> +#include <asm/cacheflush.h> +#include "sep_driver_hw_defs.h" +#include "sep_driver_config.h" +#include "sep_driver_api.h" +#include "sep_driver_ext_api.h" + +/*---------------------------------------- + DEFINES +-----------------------------------------*/ + + +#define INT_MODULE_PARM(n, v) int n = v; module_param(n, int, 0) + +/*-------------------------------------- + TYPEDEFS + -----------------------------------------*/ + + + +/*-------------------------------------------- + GLOBAL variables +--------------------------------------------*/ + +/* debug messages level */ +INT_MODULE_PARM(sepDebug, 0x0); +MODULE_PARM_DESC(sepDebug, "Flag to enable SEP debug messages"); + +/* address of the shared memory allocated during init for SEP driver */ +static unsigned long g_sep_shared_area_addr; + +/* the physical address of the shared area */ +static unsigned long g_sep_phys_shared_area_addr; + +/* Message Shared Area start address - will be allocated during init */ +static unsigned long g_message_shared_area_addr; + +/* major and minor device numbers */ +static dev_t g_sep_device_number; + +/* the files operations structure of the driver */ +static struct file_operations g_sep_fops; + +/* cdev struct of the driver */ +static struct cdev g_sep_cdev; + +/* + mutex for the access to the internals of the sep driver +*/ +static DEFINE_MUTEX(sep_mutex); + + +/* wait queue head (event) of the driver */ +DECLARE_WAIT_QUEUE_HEAD(g_sep_event); + + +/* start address of the access to the SEP registers from driver */ +unsigned long g_sep_reg_base_address; + +/* transaction counter that coordinates the transactions between SEP and HOST */ +static unsigned long sep_host_to_sep_send_counter; + +/* counter for the messages from sep */ +static unsigned long sep_sep_to_host_reply_counter; + +/* counter for the number of bytes allocated in the pool for the current +transaction */ +static unsigned long sep_data_pool_bytes_allocated; + +/* array of pointers to the pages that represent input data for the synchronic +DMA action */ +struct page **sep_in_page_array; + +/* array of pointers to the pages that represent out data for the synchronic +DMA action */ +struct page **sep_out_page_array; + +/* number of pages in the sep_in_page_array */ +unsigned long sep_in_num_pages; + +/* number of pages in the sep_out_page_array */ +unsigned long sep_out_num_pages; + +/* global data for every flow */ +static struct sep_flow_context_t g_sep_flows_data_array[SEP_DRIVER_NUM_FLOWS]; + +/* flag for API mode - 1 -is blocking, 0 is non-blocking */ +static unsigned long g_sep_block_mode_flag; + +/* pointer to the workqueue that handles the flow done interrupts */ +static struct workqueue_struct *g_sep_flow_wq_ptr; + +/*------------------------------------------------ + PROTOTYPES +---------------------------------------------------*/ + +/* + interrupt handler function +*/ +irqreturn_t sep_inthandler(int irq, void *dev_id); + +/* + this function registers the driver to the file system +*/ +static int sep_register_driver_to_fs(void); + +/* + this function unregisters driver from fs +*/ +static void sep_unregister_driver_from_fs(void); + +/* + this function calculates the size of data that can be inserted into the lli + table from this array the condition is that either the table is full + (all etnries are entered), or there are no more entries in the lli array +*/ +static unsigned long sep_calculate_lli_table_max_size( + struct sep_lli_entry_t *lli_in_array_ptr, + unsigned long num_array_entries); +/* + this functions builds ont lli table from the lli_array according to the + given size of data +*/ +static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, + struct sep_lli_entry_t *lli_table_ptr, + unsigned long *num_processed_entries_ptr, + unsigned long *num_table_entries_ptr, + unsigned long table_data_size); + +/* + this function goes over the list of the print created tables and prints + all the data +*/ +static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, + unsigned long num_table_entries, + unsigned long table_data_size); + + + +/* + This function raises interrupt to SEPm that signals that is has a new + command from HOST +*/ +static void sep_send_command_handler(void); + + +/* + This function raises interrupt to SEP that signals that is has a + new reply from HOST +*/ +static void sep_send_reply_command_handler(void); + +/* + This function handles the allocate data pool memory request + This function returns calculates the physical address of the allocated memory + and the offset of this area from the mapped address. Therefore, the FVOs in + user space can calculate the exact virtual address of this allocated memory +*/ +static int sep_allocate_data_pool_memory_handler(unsigned long arg); + + +/* + This function handles write into allocated data pool command +*/ +static int sep_write_into_data_pool_handler(unsigned long arg); + +/* + this function handles the read from data pool command +*/ +static int sep_read_from_data_pool_handler(unsigned long arg); + +/* + this function handles tha request for creation of the DMA table + for the synchronic symmetric operations (AES,DES) +*/ +static int sep_create_sync_dma_tables_handler(unsigned long arg); + +/* + this function handles the request to create the DMA tables for flow +*/ +static int sep_create_flow_dma_tables_handler(unsigned long arg); + +/* + This API handles the end transaction request +*/ +static int sep_end_transaction_handler(unsigned long arg); + + +/* + this function handles add tables to flow +*/ +static int sep_add_flow_tables_handler(unsigned long arg); + +/* + this function add the flow add message to the specific flow +*/ +static int sep_add_flow_tables_message_handler(unsigned long arg); + +/* + this function handles the request for SEP start +*/ +static int sep_start_handler(void); + +/* + this function handles the request for SEP initialization +*/ +static int sep_init_handler(unsigned long arg); + +/* + this function handles the request cache and resident reallocation +*/ +static int sep_realloc_cache_resident_handler(unsigned long arg); + + +/* + This api handles the setting of API mode to blocking or non-blocking +*/ +static int sep_set_api_mode_handler(unsigned long arg); + +/* handler for flow done interrupt */ +static void sep_flow_done_handler(struct work_struct *work); + +/* + This function locks all the physical pages of the kernel virtual buffer + and construct a basic lli array, where each entry holds the physical + page address and the size that application data holds in this physical pages +*/ +static int sep_lock_kernel_pages(unsigned long kernel_virt_addr, + unsigned long data_size, + unsigned long *num_pages_ptr, + struct sep_lli_entry_t **lli_array_ptr, + struct page ***page_array_ptr); + +/* + This function creates one DMA table for flow and returns its data, + and pointer to its info entry +*/ +static int sep_prepare_one_flow_dma_table(unsigned long virt_buff_addr, + unsigned long virt_buff_size, + struct sep_lli_entry_t *table_data, + struct sep_lli_entry_t **info_entry_ptr, + struct sep_flow_context_t *flow_data_ptr, + bool isKernelVirtualAddress); + +/* + This function creates a list of tables for flow and returns the data for the + first and last tables of the list +*/ +static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, + unsigned long first_buff_addr, + struct sep_flow_context_t *flow_data_ptr, + struct sep_lli_entry_t *first_table_data_ptr, + struct sep_lli_entry_t *last_table_data_ptr, + bool isKernelVirtualAddress); + +/* + this function find a space for the new flow dma table +*/ +static int sep_find_free_flow_dma_table_space( + unsigned long **table_address_ptr); + +/* + this function goes over all the flow tables connected to the given table and + deallocate them +*/ +static void sep_deallocated_flow_tables( + struct sep_lli_entry_t *first_table_ptr); + +/* + This function handler the set flow id command +*/ +static int sep_set_flow_id_handler(unsigned long arg); + +/* + This function returns pointer to the flow data structure + that conatins the given id +*/ +static int sep_find_flow_context(unsigned long flow_id, + struct sep_flow_context_t **flow_data_ptr); + + +/* + this function returns the physical and virtual addresses of the static pool +*/ +static int sep_get_static_pool_addr_handler(unsigned long arg); + +/* + this address gets the offset of the physical address from the start of + the mapped area +*/ +static int sep_get_physical_mapped_offset_handler(unsigned long arg); + + +/* + this function handles the request for get time +*/ +static int sep_get_time_handler(unsigned long arg); + +/* + calculates time and sets it at the predefined address +*/ +static int sep_set_time(unsigned long *address_ptr, + unsigned long *time_in_sec_ptr); + +/* + PATCH for configuring the DMA to single burst instead of multi-burst +*/ +static void sep_configure_dma_burst(void); + +/* + This function locks all the physical pages of the + application virtual buffer and construct a basic lli + array, where each entry holds the physical page address + and the size that application data holds in this physical pages +*/ +static int sep_lock_user_pages(unsigned long app_virt_addr, + unsigned long data_size, + unsigned long *num_pages_ptr, + struct sep_lli_entry_t **lli_array_ptr, + struct page ***page_array_ptr); + +/*--------------------------------------------- + FUNCTIONS +-----------------------------------------------*/ + +/* + this function locks SEP by locking the semaphore +*/ +int sep_lock() +{ + mutex_lock(&sep_mutex); + + return 0; +} + +/* + this function unlocks SEP +*/ +void sep_unlock() +{ + /* release mutex */ + mutex_unlock(&sep_mutex); +} + +/* + this function returns the address of the message shared area +*/ +void sep_map_shared_area(unsigned long *mappedAddr_ptr) +{ + *mappedAddr_ptr = g_sep_shared_area_addr; +} + +/* + this function returns the address of the message shared area +*/ +void sep_send_msg_rdy_cmd() +{ + sep_send_command_handler(); +} + +/* this functions frees all the resources that were allocated for the building +of the LLI DMA tables */ +void sep_free_dma_resources() +{ + sep_free_dma_table_data_handler(); +} + +/* poll(suspend), until reply from sep */ +void sep_driver_poll() +{ + unsigned long retVal = 0; + +#ifdef SEP_DRIVER_POLLING_MODE + + while (sep_host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR2_REG_ADDR, + retVal); + + sep_sep_to_host_reply_counter++; +#else + /* poll, until reply from sep */ + wait_event(g_sep_event, + (sep_host_to_sep_send_counter == sep_sep_to_host_reply_counter)); + +#endif +} + +/*---------------------------------------------------------------------- + open function of the character driver - must only lock the mutex + must also release the memory data pool allocations +------------------------------------------------------------------------*/ +static int sep_open(struct inode *inode_ptr, struct file *file_ptr) +{ + /* return value */ + int error; + + /*----------------- + CODE + ---------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:--------> open start\n"); + + error = 0; + + /* check the blocking mode */ + if (g_sep_block_mode_flag) + /* lock mutex */ + mutex_lock(&sep_mutex); + else + error = mutex_trylock(&sep_mutex); + + /* check the error */ + if (error) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: down_interruptible failed\n"); + + goto end_function; + } + + /* release data pool allocations */ + sep_data_pool_bytes_allocated = 0; + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- open end\n"); + + return error; +} + + + + +/*------------------------------------------------------------ + release function +-------------------------------------------------------------*/ +static int sep_release(struct inode *inode_ptr, struct file *file_ptr) +{ + /*----------------- + CODE + ---------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "----------->SEP Driver: sep_release start\n"); + +#if 0/*!SEP_DRIVER_POLLING_MODE*/ + /* close IMR */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_IMR_REG_ADDR, 0x7FFF); + + /* release IRQ line */ + free_irq(SEP_DIRVER_IRQ_NUM, &g_sep_reg_base_address); + +#endif + + /* unlock the sep mutex */ + mutex_unlock(&sep_mutex); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_release end\n"); + + return 0; +} + + + + +/*--------------------------------------------------------------- + map function - this functions maps the message shared area +-----------------------------------------------------------------*/ +static int sep_mmap(struct file *filp, struct vm_area_struct *vma) +{ + /* physical addr */ + unsigned long phys_addr; + + /*----------------------- + CODE + -------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "-------->SEP Driver: mmap start\n"); + + /* check that the size of the mapped range is as the size of the message + shared area */ + if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver mmap requested size is more than allowed\n"); + printk(KERN_WARNING "SEP Driver mmap requested size is more \ + than allowed\n"); + printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", + vma->vm_end); + printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", + vma->vm_start); + return -EAGAIN; + } + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:g_message_shared_area_addr is %08lx\n", + g_message_shared_area_addr); + + /* get physical address */ + phys_addr = g_sep_phys_shared_area_addr; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: phys_addr is %08lx\n", +phys_addr); + + if (remap_pfn_range(vma, + vma->vm_start, + phys_addr >> PAGE_SHIFT, + vma->vm_end - vma->vm_start, + vma->vm_page_prot)) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver remap_page_range failed\n"); + printk(KERN_WARNING "SEP Driver remap_page_range failed\n"); + return -EAGAIN; + } + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- mmap end\n"); + + return 0; +} + + +/*----------------------------------------------- + poll function +*----------------------------------------------*/ +static unsigned int sep_poll(struct file *filp, poll_table *wait) +{ + unsigned long count; + + unsigned int mask = 0; + + /* flow id */ + unsigned long retVal = 0; + + /*---------------------------------------------- + CODE + -------------------------------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "---------->SEP Driver poll: start\n"); + + +#if SEP_DRIVER_POLLING_MODE + + while (sep_host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) { + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR2_REG_ADDR, + retVal); + + for (count = 0; count < 10 * 4; count += 4) + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "Poll Debug Word %lu of the message is %lu\n", + count, + *((unsigned long *)(g_sep_shared_area_addr + + SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + count))); + } + + sep_sep_to_host_reply_counter++; +#else + /* add the event to the polling wait table */ + poll_wait(filp, &g_sep_event, wait); + +#endif + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "sep_host_to_sep_send_counter is %lu\n", + sep_host_to_sep_send_counter); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "sep_sep_to_host_reply_counter is %lu\n", + sep_sep_to_host_reply_counter); + + /* check if the data is ready */ + if (sep_host_to_sep_send_counter == sep_sep_to_host_reply_counter) { + for (count = 0; count < 12 * 4; count += 4) + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "Sep Mesg Word %lu of the message is %lu\n", + count, *((unsigned long *)(g_sep_shared_area_addr + count))); + + for (count = 0; count < 10 * 4; count += 4) + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "Debug Data Word %lu of the message is %lu\n", + count, + *((unsigned long *)(g_sep_shared_area_addr + 0x1800 + count))); + + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR2_REG_ADDR, + retVal); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "retVal is %lu\n", retVal); + /* check if the this is sep reply or request */ + if (retVal >> 31) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: sep request in\n"); + /* request */ + mask |= POLLOUT | POLLWRNORM; + } else { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: sep reply in\n"); + mask |= POLLIN | POLLRDNORM; + } + } + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- poll exit\n"); + return mask; +} + + +static int sep_ioctl(struct inode *inode, + struct file *filp, + unsigned int cmd, + unsigned long arg) +{ + + /* error */ + int error; + + /*------------------------ + CODE + ------------------------*/ + error = 0; + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "------------>SEP Driver: ioctl start\n"); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: cmd is %x\n", cmd); + + /* check that the command is for sep device */ + if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) + error = -ENOTTY; + + switch (cmd) { + case SEP_IOCSENDSEPCOMMAND: + + /* send command to SEP */ + sep_send_command_handler(); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: after sep_send_command_handler\n"); + + break; + + case SEP_IOCSENDSEPRPLYCOMMAND: + + /* send reply command to SEP */ + sep_send_reply_command_handler(); + + break; + + case SEP_IOCALLOCDATAPOLL: + + /* allocate data pool */ + error = sep_allocate_data_pool_memory_handler(arg); + + break; + + case SEP_IOCWRITEDATAPOLL: + + /* write data into memory pool */ + error = sep_write_into_data_pool_handler(arg); + + break; + + case SEP_IOCREADDATAPOLL: + + /* read data from data pool into application memory */ + error = sep_read_from_data_pool_handler(arg); + + break; + + case SEP_IOCCREATESYMDMATABLE: + + /* create dma table for synhronic operation */ + error = sep_create_sync_dma_tables_handler(arg); + + break; + + case SEP_IOCCREATEFLOWDMATABLE: + + /* create flow dma tables */ + error = sep_create_flow_dma_tables_handler(arg); + + break; + + case SEP_IOCFREEDMATABLEDATA: + + /* free the pages */ + error = sep_free_dma_table_data_handler(); + + break; + + case SEP_IOCSETFLOWID: + + /* set flow id */ + error = sep_set_flow_id_handler(arg); + + break; + + case SEP_IOCADDFLOWTABLE: + + /* add tables to the dynamic flow */ + error = sep_add_flow_tables_handler(arg); + + break; + + case SEP_IOCADDFLOWMESSAGE: + + /* add message of add tables to flow */ + error = sep_add_flow_tables_message_handler(arg); + + break; + + case SEP_IOCSEPSTART: + + /* start command to sep */ + error = sep_start_handler(); + break; + + case SEP_IOCSEPINIT: + + /* init command to sep */ + error = sep_init_handler(arg); + break; + + case SEP_IOCSETAPIMODE: + + /* set non- blocking mode */ + error = sep_set_api_mode_handler(arg); + + break; + + case SEP_IOCGETSTATICPOOLADDR: + + /* get the physical and virtual addresses of the static pool */ + error = sep_get_static_pool_addr_handler(arg); + + break; + + case SEP_IOCENDTRANSACTION: + + error = sep_end_transaction_handler(arg); + + break; + + case SEP_IOCREALLOCCACHERES: + + error = sep_realloc_cache_resident_handler(arg); + + break; + + case SEP_IOCGETMAPPEDADDROFFSET: + + error = sep_get_physical_mapped_offset_handler(arg); + + break; + case SEP_IOCGETIME: + + error = sep_get_time_handler(arg); + + break; + + default: + error = -ENOTTY; + break; + } + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- ioctl end\n"); + + return error; +} + + +/* + this function registers the driver to the file system +*/ +static int sep_register_driver_to_fs(void) +{ + /* return value */ + int ret_val; + + /*--------------------- + CODE + -----------------------*/ + + ret_val = alloc_chrdev_region(&g_sep_device_number, 0, 1, "sep_sec_driver"); + if (ret_val) { + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "sep_driver:major number allocation failed, retval is %d\n", ret_val); + goto end_function; + } + + /* set the files operations structure */ + g_sep_fops.owner = THIS_MODULE; + g_sep_fops.ioctl = sep_ioctl; + g_sep_fops.poll = sep_poll; + g_sep_fops.open = sep_open; + g_sep_fops.release = sep_release; + g_sep_fops.mmap = sep_mmap; + + /* init cdev */ + cdev_init(&g_sep_cdev, &g_sep_fops); + g_sep_cdev.owner = THIS_MODULE; + + /* register the driver with the kernel */ + ret_val = cdev_add(&g_sep_cdev, g_sep_device_number, 1); + + if (ret_val) { + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "sep_driver:cdev_add failed, retval is %d\n", + ret_val); + goto end_function_unregister_devnum; + } + + goto end_function; + +end_function_unregister_devnum: + + /* unregister dev numbers */ + unregister_chrdev_region(g_sep_device_number, 1); + +end_function: + + return ret_val; +} + +/* + this function unregisters driver from fs +*/ +static void sep_unregister_driver_from_fs(void) +{ + /*------------------- + CODE + ---------------------*/ + + cdev_del(&g_sep_cdev); + + /* unregister dev numbers */ + unregister_chrdev_region(g_sep_device_number, 1); +} + +/*-------------------------------------------------------------- + init function +----------------------------------------------------------------*/ +static int __init sep_init(void) +{ + /* return value */ + int ret_val; + + /* counter */ + int counter; + + /* size to of memory for allocation */ + int size; + + /*------------------------ + CODE + ------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:-------->Init start\n"); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, + "g_sep_shared_area_addr = %lx\n", + (unsigned long)&g_sep_shared_area_addr); + + ret_val = 0; + +/* transaction counter that coordinates the transactions between SEP + and HOST */ + sep_host_to_sep_send_counter = 0; + +/* counter for the messages from sep */ + sep_sep_to_host_reply_counter = 0; + +/* counter for the number of bytes allocated in the pool +for the current transaction */ + sep_data_pool_bytes_allocated = 0; + + /* set the starting mode to blocking */ + g_sep_block_mode_flag = 1; + + + ret_val = sep_register_driver_to_device(); + if (ret_val) { + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "sep_driver:sep_driver_to_device failed, ret_val is %d\n", + ret_val); + goto end_function_unregister_from_fs; + } + + /* calculate the total size for allocation */ + size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + + SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + + SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; + + + + /* allocate the shared area */ + if (sep_map_and_alloc_shared_area(size, + &g_sep_shared_area_addr, + &g_sep_phys_shared_area_addr)) { + ret_val = -ENOMEM; + /* allocation failed */ + goto end_function_unmap_io_memory; + } + + /* now set the memory regions */ + g_message_shared_area_addr = g_sep_shared_area_addr; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: g_message_shared_area_addr is %08lx\n", + g_message_shared_area_addr); + +#if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1) + + /* send the new SHARED MESSAGE AREA to the SEP */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_HOST_SEP_GPR1_REG_ADDR, + g_sep_phys_shared_area_addr); + + /* poll for SEP response */ + SEP_READ_REGISTER(g_sep_reg_base_address + HW_HOST_SEP_HOST_GPR1_REG_ADDR, + retVal); + while (retVal != 0xffffffff && retVal != g_sep_phys_shared_area_addr) + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR1_REG_ADDR, + retVal); + + /* check the return value (register) */ + if (retVal != g_sep_phys_shared_area_addr) { + ret_val = -ENOMEM; + goto end_function_deallocate_message_area; + } + +#endif + + /* init the flow contextes */ + for (counter = 0; counter < SEP_DRIVER_NUM_FLOWS; counter++) + g_sep_flows_data_array[counter].flow_id = SEP_FREE_FLOW_ID; + + g_sep_flow_wq_ptr = create_singlethread_workqueue("sepflowwq"); + if (g_sep_flow_wq_ptr == 0) { + ret_val = -ENOMEM; + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "sep_driver:flow queue creation failed\n"); + goto end_function_deallocate_sep_shared_area; + } + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: create flow workqueue \n"); + + /* register driver to fs */ + ret_val = sep_register_driver_to_fs(); + if (ret_val) + goto end_function_deallocate_sep_shared_area; + + /* load the rom code */ + sep_load_rom_code(); + + goto end_function; + +end_function_unregister_from_fs: + + /* unregister from fs */ + sep_unregister_driver_from_fs(); + +end_function_deallocate_sep_shared_area: + + /* de-allocate shared area */ + sep_unmap_and_free_shared_area(size, + g_sep_shared_area_addr, + g_sep_phys_shared_area_addr); + +end_function_unmap_io_memory: + + iounmap((void *)g_sep_reg_base_address); + + /* release io memory region */ + release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- Init end\n"); + + return ret_val; +} + + + + +/*------------------------------------------------------------- + exit function +--------------------------------------------------------------*/ +static void __exit sep_exit(void) +{ + /* size */ + int size; + + /*----------------------------- + CODE + --------------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:--------> Exit start\n"); + + /* unregister from fs */ + sep_unregister_driver_from_fs(); + + /* calculate the total size for de-allocation */ + size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + + SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + + SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; + + + /* free shared area */ + sep_unmap_and_free_shared_area(size, + g_sep_shared_area_addr, + g_sep_phys_shared_area_addr); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: free pages SEP SHARED AREA \n"); + + iounmap((void *)g_sep_reg_base_address); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: iounmap \n"); + + /* release io memory region */ + release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: release_mem_region \n"); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- Exit end\n"); +} + + +/* + interrupt handler function +*/ +irqreturn_t sep_inthandler(int irq, void *dev_id) +{ + /* int error */ + irqreturn_t int_error; + + /* error */ + unsigned long error; + + /* reg value */ + unsigned long reg_val; + + /* flow id */ + unsigned long flow_id; + + /* flow context */ + struct sep_flow_context_t *flow_context_ptr; + + /*----------------------------- + CODE + -----------------------------*/ + + int_error = IRQ_HANDLED; + + /* read the IRR register to check if this is SEP interrupt */ + SEP_READ_REGISTER(g_sep_reg_base_address + HW_HOST_IRR_REG_ADDR, reg_val); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Interrupt - reg is %08lx\n", + reg_val); + + /* check if this is the flow interrupt */ + if (0/*reg_val & (0x1 << 11)*/) { + /* read GPRO to find out the which flow is done */ + SEP_READ_REGISTER(g_sep_reg_base_address + HW_HOST_IRR_REG_ADDR, + flow_id); + + /* find the contex of the flow */ + error = sep_find_flow_context(flow_id >> 28, &flow_context_ptr); + if (error) + goto end_function_with_error; + + INIT_WORK(&flow_context_ptr->flow_wq, sep_flow_done_handler); + + /* queue the work */ + queue_work(g_sep_flow_wq_ptr, &flow_context_ptr->flow_wq); + + } else { + /* check if this is reply interrupt from SEP */ + if (reg_val & (0x1 << 13)) { + /* update the counter of reply messages */ + sep_sep_to_host_reply_counter++; + + /* wake up the waiting process */ + wake_up(&g_sep_event); + } else { + int_error = IRQ_NONE; + goto end_function; + } + } + +end_function_with_error: + + /* clear the interrupt */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_ICR_REG_ADDR, reg_val); + +end_function: + + return int_error; +} + + +/* + This function prepares only input DMA table for synhronic symmetric + operations (HASH) +*/ +int sep_prepare_input_dma_table(unsigned long app_virt_addr, + unsigned long data_size, + unsigned long block_size, + unsigned long *lli_table_ptr, + unsigned long *num_entries_ptr, + unsigned long *table_data_size_ptr, + bool isKernelVirtualAddress) + +{ + /* pointer to the info entry of the table - the last entry */ + struct sep_lli_entry_t *info_entry_ptr; + + /* array of pointers ot page */ + struct sep_lli_entry_t *lli_array_ptr; + + /* points to the first entry to be processed in the lli_in_array */ + unsigned long current_entry; + + /* num entries in the virtual buffer */ + unsigned long sep_lli_entries; + + /* lli table pointer */ + struct sep_lli_entry_t *in_lli_table_ptr; + + /* the total data in one table */ + unsigned long table_data_size; + + /* number of entries in lli table */ + unsigned long num_entries_in_table; + + /* next table address */ + unsigned long lli_table_alloc_addr; + + /* result */ + unsigned long result; + + /*------------------------ + CODE + --------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_prepare_input_dma_table start\n"); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver:data_size is %lu\n", + data_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver:block_size is %lu\n", + block_size); + + /* initialize the pages pointers */ + sep_in_page_array = 0; + sep_in_num_pages = 0; + + if (data_size == 0) { + /* special case - created 2 entries table with zero data */ + in_lli_table_ptr = (struct sep_lli_entry_t *)(g_sep_shared_area_addr + + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES); + in_lli_table_ptr->physical_address = g_sep_shared_area_addr + + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; + in_lli_table_ptr->block_size = 0; + + in_lli_table_ptr++; + in_lli_table_ptr->physical_address = 0xFFFFFFFF; + in_lli_table_ptr->block_size = 0; + + *lli_table_ptr = g_sep_phys_shared_area_addr + + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; + *num_entries_ptr = 2; + *table_data_size_ptr = 0; + + goto end_function; + } + + /* check if the pages are in Kernel Virtual Address layout */ + if (isKernelVirtualAddress == true) + /* lock the pages of the kernel buffer and translate them to pages */ + result = sep_lock_kernel_pages(app_virt_addr, + data_size, + &sep_in_num_pages, + &lli_array_ptr, + &sep_in_page_array); + else + /* lock the pages of the user buffer and translate them to pages */ + result = sep_lock_user_pages(app_virt_addr, + data_size, + &sep_in_num_pages, + &lli_array_ptr, + &sep_in_page_array); + + if (result) + return result; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output sep_in_num_pages is %lu\n", + sep_in_num_pages); + + current_entry = 0; + info_entry_ptr = 0; + sep_lli_entries = sep_in_num_pages; + + /* initiate to point after the message area */ + lli_table_alloc_addr = g_sep_shared_area_addr + + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; + + /* loop till all the entries in in array are not processed */ + while (current_entry < sep_lli_entries) { + /* set the new input and output tables */ + in_lli_table_ptr = (struct sep_lli_entry_t *)lli_table_alloc_addr; + + lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * + SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; + + /* calculate the maximum size of data for input table */ + table_data_size = sep_calculate_lli_table_max_size( + &lli_array_ptr[current_entry], + (sep_lli_entries - current_entry)); + + /* now calculate the table size so that it will be module block size */ + table_data_size = (table_data_size / block_size) * block_size; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output table_data_size is %lu\n", + table_data_size); + + /* construct input lli table */ + sep_build_lli_table(&lli_array_ptr[current_entry], + in_lli_table_ptr, + ¤t_entry, + &num_entries_in_table, + table_data_size); + + if (info_entry_ptr == 0) { + /* set the output parameters to physical addresses */ + *lli_table_ptr = sep_shared_area_virt_to_phys( + (unsigned long)in_lli_table_ptr); + *num_entries_ptr = num_entries_in_table; + *table_data_size_ptr = table_data_size; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output lli_table_in_ptr is %08lx\n", + *lli_table_ptr); + } else { + /* update the info entry of the previous in table */ + info_entry_ptr->physical_address = sep_shared_area_virt_to_phys( + (unsigned long)in_lli_table_ptr); + info_entry_ptr->block_size = ((num_entries_in_table) << 24) | + (table_data_size); + } + + /* save the pointer to the info entry of the current tables */ + info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; + } + + /* print input tables */ + sep_debug_print_lli_tables((struct sep_lli_entry_t *) + sep_shared_area_phys_to_virt(*lli_table_ptr), + *num_entries_ptr, + *table_data_size_ptr); + + /* the array of the pages */ + kfree(lli_array_ptr); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_prepare_input_dma_table end\n"); + + return 0; + +} + +/* + This function builds input and output DMA tables for synhronic + symmetric operations (AES, DES). It also checks that each table + is of the modular block size +*/ +int sep_prepare_input_output_dma_table(unsigned long app_virt_in_addr, + unsigned long app_virt_out_addr, + unsigned long data_size, + unsigned long block_size, + unsigned long *lli_table_in_ptr, + unsigned long *lli_table_out_ptr, + unsigned long *in_num_entries_ptr, + unsigned long *out_num_entries_ptr, + unsigned long *table_data_size_ptr, + bool isKernelVirtualAddress) + +{ + /* array of pointers of page */ + struct sep_lli_entry_t *lli_in_array; + + /* array of pointers of page */ + struct sep_lli_entry_t *lli_out_array; + + /* result */ + int result; + + + /*------------------------ + CODE + --------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_prepare_input_output_dma_table start\n"); + + result = 0; + + /* initialize the pages pointers */ + sep_in_page_array = 0; + sep_out_page_array = 0; + + /* check if the pages are in Kernel Virtual Address layout */ + if (isKernelVirtualAddress == true) { + /* lock the pages of the kernel buffer and translate them to pages */ + result = sep_lock_kernel_pages(app_virt_in_addr, + data_size, + &sep_in_num_pages, + &lli_in_array, + &sep_in_page_array); + if (result) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: sep_lock_kernel_pages for input virtual buffer failed\n"); + goto end_function; + } + } else { + /* lock the pages of the user buffer and translate them to pages */ + result = sep_lock_user_pages(app_virt_in_addr, + data_size, + &sep_in_num_pages, + &lli_in_array, + &sep_in_page_array); + if (result) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: sep_lock_user_pages for input virtual buffer failed\n"); + goto end_function; + } + } + + if (isKernelVirtualAddress == true) { + result = sep_lock_kernel_pages(app_virt_out_addr, + data_size, + &sep_out_num_pages, + &lli_out_array, + &sep_out_page_array); + if (result) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: sep_lock_kernel_pages for output virtual buffer failed\n"); + goto end_function_with_error1; + } + } else { + result = sep_lock_user_pages(app_virt_out_addr, + data_size, + &sep_out_num_pages, + &lli_out_array, + &sep_out_page_array); + if (result) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: sep_lock_user_pages for output virtual buffer failed\n"); + goto end_function_with_error1; + } + } + + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "sep_in_num_pages is %lu\n", sep_in_num_pages); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "sep_out_num_pages is %lu\n", sep_out_num_pages); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n", + SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); + + + /* call the fucntion that creates table from the lli arrays */ + result = sep_construct_dma_tables_from_lli(lli_in_array, + sep_in_num_pages, + lli_out_array, + sep_out_num_pages, + block_size, + lli_table_in_ptr, + lli_table_out_ptr, + in_num_entries_ptr, + out_num_entries_ptr, + table_data_size_ptr); + if (result) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: sep_construct_dma_tables_from_lli failed\n"); + goto end_function_with_error2; + } + + /* fall through - free the lli entry arrays */ + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "in_num_entries_ptr is %08lx\n", + *in_num_entries_ptr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "out_num_entries_ptr is %08lx\n", + *out_num_entries_ptr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "table_data_size_ptr is %08lx\n", + *table_data_size_ptr); + + +end_function_with_error2: + + kfree(lli_out_array); + +end_function_with_error1: + + kfree(lli_in_array); + +end_function: + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, +"SEP Driver:<-------- sep_prepare_input_output_dma_table end result = %d\n", +(int)result); + + return result; + +} + + +/* + This function creates the input and output dma tables for + symmetric operations (AES/DES) according to the block size from LLI arays +*/ +int sep_construct_dma_tables_from_lli(struct sep_lli_entry_t *lli_in_array, + unsigned long sep_in_lli_entries, + struct sep_lli_entry_t *lli_out_array, + unsigned long sep_out_lli_entries, + unsigned long block_size, + unsigned long *lli_table_in_ptr, + unsigned long *lli_table_out_ptr, + unsigned long *in_num_entries_ptr, + unsigned long *out_num_entries_ptr, + unsigned long *table_data_size_ptr) +{ + /* points to the area where next lli table can be allocated */ + unsigned long lli_table_alloc_addr; + + /* input lli table */ + struct sep_lli_entry_t *in_lli_table_ptr; + + /* output lli table */ + struct sep_lli_entry_t *out_lli_table_ptr; + + /* pointer to the info entry of the table - the last entry */ + struct sep_lli_entry_t *info_in_entry_ptr; + + /* pointer to the info entry of the table - the last entry */ + struct sep_lli_entry_t *info_out_entry_ptr; + + /* points to the first entry to be processed in the lli_in_array */ + unsigned long current_in_entry; + + /* points to the first entry to be processed in the lli_out_array */ + unsigned long current_out_entry; + + /* max size of the input table */ + unsigned long in_table_data_size; + + /* max size of the output table */ + unsigned long out_table_data_size; + + /* flag te signifies if this is the first tables build from the arrays */ + unsigned long first_table_flag; + + /* the data size that should be in table */ + unsigned long table_data_size; + + /* number of etnries in the input table */ + unsigned long num_entries_in_table; + + /* number of etnries in the output table */ + unsigned long num_entries_out_table; + + /*--------------------- + CODE + ------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_construct_dma_tables_from_lli start\n"); + + /* initiate to pint after the message area */ + lli_table_alloc_addr = g_sep_shared_area_addr + + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; + + current_in_entry = 0; + current_out_entry = 0; + first_table_flag = 1; + info_in_entry_ptr = 0; + info_out_entry_ptr = 0; + + /* loop till all the entries in in array are not processed */ + while (current_in_entry < sep_in_lli_entries) { + /* set the new input and output tables */ + in_lli_table_ptr = (struct sep_lli_entry_t *)lli_table_alloc_addr; + + lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * + SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; + + /* set the first output tables */ + out_lli_table_ptr = (struct sep_lli_entry_t *)lli_table_alloc_addr; + + lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * + SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; + + /* calculate the maximum size of data for input table */ + in_table_data_size = + sep_calculate_lli_table_max_size( + &lli_in_array[current_in_entry], + (sep_in_lli_entries - current_in_entry)); + + /* calculate the maximum size of data for output table */ + out_table_data_size = + sep_calculate_lli_table_max_size( + &lli_out_array[current_out_entry], + (sep_out_lli_entries - current_out_entry)); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:in_table_data_size is %lu\n", in_table_data_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:out_table_data_size is %lu\n", out_table_data_size); + + /* check where the data is smallest */ + table_data_size = in_table_data_size; + if (table_data_size > out_table_data_size) + table_data_size = out_table_data_size; + + /* now calculate the table size so that it will be module block size */ + table_data_size = (table_data_size / block_size) * block_size; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:table_data_size is %lu\n", + table_data_size); + + /* construct input lli table */ + sep_build_lli_table(&lli_in_array[current_in_entry], + in_lli_table_ptr, + ¤t_in_entry, + &num_entries_in_table, + table_data_size); + + /* construct output lli table */ + sep_build_lli_table(&lli_out_array[current_out_entry], + out_lli_table_ptr, + ¤t_out_entry, + &num_entries_out_table, + table_data_size); + + /* if info entry is null - this is the first table built */ + if (info_in_entry_ptr == 0) { + /* set the output parameters to physical addresses */ + *lli_table_in_ptr = + sep_shared_area_virt_to_phys((unsigned long)in_lli_table_ptr); + *in_num_entries_ptr = num_entries_in_table; + *lli_table_out_ptr = + sep_shared_area_virt_to_phys((unsigned long)out_lli_table_ptr); + *out_num_entries_ptr = num_entries_out_table; + *table_data_size_ptr = table_data_size; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output lli_table_out_ptr is %08lx\n", *lli_table_out_ptr); + } else { + /* update the info entry of the previous in table */ + info_in_entry_ptr->physical_address = + sep_shared_area_virt_to_phys((unsigned long)in_lli_table_ptr); + info_in_entry_ptr->block_size = + ((num_entries_in_table) << 24) | (table_data_size); + + /* update the info entry of the previous in table */ + info_out_entry_ptr->physical_address = + sep_shared_area_virt_to_phys((unsigned long)out_lli_table_ptr); + info_out_entry_ptr->block_size = + ((num_entries_out_table) << 24) | (table_data_size); + } + + /* save the pointer to the info entry of the current tables */ + info_in_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; + info_out_entry_ptr = out_lli_table_ptr + num_entries_out_table - 1; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output num_entries_out_table is %lu\n", + (unsigned long)num_entries_out_table); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output info_in_entry_ptr is %lu\n", + (unsigned long)info_in_entry_ptr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:output info_out_entry_ptr is %lu\n", + (unsigned long)info_out_entry_ptr); + } + + /* print input tables */ + sep_debug_print_lli_tables( + (struct sep_lli_entry_t *) + sep_shared_area_phys_to_virt(*lli_table_in_ptr), + *in_num_entries_ptr, + *table_data_size_ptr); + + /* print output tables */ + sep_debug_print_lli_tables( + (struct sep_lli_entry_t *) + sep_shared_area_phys_to_virt(*lli_table_out_ptr), + *out_num_entries_ptr, + *table_data_size_ptr); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_construct_dma_tables_from_lli end\n"); + + return 0; +} + +/* + this function calculates the size of data that can be inserted into the lli + table from this array the condition is that either the table is full + (all etnries are entered), or there are no more entries in the lli array +*/ +unsigned long sep_calculate_lli_table_max_size( + struct sep_lli_entry_t *lli_in_array_ptr, + unsigned long num_array_entries) +{ + /* table data size */ + unsigned long table_data_size; + + /* counter */ + unsigned long counter; + + /*--------------------- + CODE + ----------------------*/ + + table_data_size = 0; + + /* calculate the data in the out lli table if till we fill the whole + table or till the data has ended */ + for (counter = 0; + (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) && + (counter < num_array_entries); counter++) + table_data_size += lli_in_array_ptr[counter].block_size; + + return table_data_size; +} + +/* + this functions builds ont lli table from the lli_array according to + the given size of data +*/ +static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, + struct sep_lli_entry_t *lli_table_ptr, + unsigned long *num_processed_entries_ptr, + unsigned long *num_table_entries_ptr, + unsigned long table_data_size) +{ + /* current table data size */ + unsigned long curr_table_data_size; + + /* counter of lli array entry */ + unsigned long array_counter; + + /*----------------------- + CODE + ---------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_build_lli_table start\n"); + + /* init currrent table data size and lli array entry counter */ + curr_table_data_size = 0; + array_counter = 0; + *num_table_entries_ptr = 1; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:table_data_size is %lu\n", + table_data_size); + + /* fill the table till table size reaches the needed amount */ + while (curr_table_data_size < table_data_size) { + /* update the number of entries in table */ + (*num_table_entries_ptr)++; + + lli_table_ptr->physical_address = + lli_array_ptr[array_counter].physical_address; + lli_table_ptr->block_size = lli_array_ptr[array_counter].block_size; + curr_table_data_size += lli_table_ptr->block_size; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr is %08lx\n", + (unsigned long)lli_table_ptr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr->physical_address is %08lx\n", + lli_table_ptr->physical_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr->block_size is %lu\n", + lli_table_ptr->block_size); + + /* check for overflow of the table data */ + if (curr_table_data_size > table_data_size) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:curr_table_data_size > table_data_size\n"); + + /* update the size of block in the table */ + lli_table_ptr->block_size -= (curr_table_data_size - table_data_size); + + /* update the physical address in the lli array */ + lli_array_ptr[array_counter].physical_address += + lli_table_ptr->block_size; + + /* update the block size left in the lli array */ + lli_array_ptr[array_counter].block_size = + (curr_table_data_size - table_data_size); + } else + /* advance to the next entry in the lli_array */ + array_counter++; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr->physical_address is %08lx\n", + lli_table_ptr->physical_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr->block_size is %lu\n", + lli_table_ptr->block_size); + + /* move to the next entry in table */ + lli_table_ptr++; + } + + /* set the info entry to default */ + lli_table_ptr->physical_address = 0xffffffff; + lli_table_ptr->block_size = 0; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr is %08lx\n", + (unsigned long)lli_table_ptr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr->physical_address is %08lx\n", + lli_table_ptr->physical_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr->block_size is %lu\n", + lli_table_ptr->block_size); + + + /* set the output parameter */ + *num_processed_entries_ptr += array_counter; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:*num_processed_entries_ptr is %lu\n", + *num_processed_entries_ptr); + + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_build_lli_table end\n"); + + return; +} + +/* + this function goes over the list of the print created tables and + prints all the data +*/ +static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, + unsigned long num_table_entries, + unsigned long table_data_size) +{ + unsigned long table_count; + + unsigned long entries_count; + /*----------------------------- + CODE + -------------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_debug_print_lli_tables start\n"); + + table_count = 1; + while ((unsigned long)lli_table_ptr != 0xffffffff) { + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: lli table %08lx, table_data_size is %lu\n", + table_count, + table_data_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: num_table_entries is %lu\n", num_table_entries); + + /* print entries of the table (without info entry) */ + for (entries_count = 0; + entries_count < num_table_entries; + entries_count++, lli_table_ptr++) { + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:lli_table_ptr address is %08lx\n", + (unsigned long)lli_table_ptr); + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:phys address is %08lx block size is %lu\n", + lli_table_ptr->physical_address, lli_table_ptr->block_size); + } + + /* point to the info entry */ + lli_table_ptr--; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:phys lli_table_ptr->block_size is %lu\n", + lli_table_ptr->block_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:phys lli_table_ptr->physical_address is %08lx\n", + lli_table_ptr->physical_address); + + + table_data_size = lli_table_ptr->block_size & 0xffffff; + num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff; + lli_table_ptr = (struct sep_lli_entry_t *) + (lli_table_ptr->physical_address); + + DEBUG_PRINT_3(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:phys table_data_size is %lu num_table_entries is \ + %lu lli_table_ptr is%lu\n", + table_data_size, num_table_entries, (unsigned long)lli_table_ptr); + + if ((unsigned long)lli_table_ptr != 0xffffffff) + lli_table_ptr = (struct sep_lli_entry_t *)sep_shared_area_phys_to_virt( + (unsigned long)lli_table_ptr); + + table_count++; + } + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_debug_print_lli_tables end\n"); +} + + +/* + This function locks all the physical pages of the application virtual buffer + and construct a basic lli array, where each entry holds the physical page + address and the size that application data holds in this physical pages +*/ +int sep_lock_user_pages(unsigned long app_virt_addr, + unsigned long data_size, + unsigned long *num_pages_ptr, + struct sep_lli_entry_t **lli_array_ptr, + struct page ***page_array_ptr) + +{ + /* error */ + int error; + + /* the the page of the end address of the user space buffer */ + unsigned long end_page; + + /* the page of the start address of the user space buffer */ + unsigned long start_page; + + /* the range in pages */ + unsigned long num_pages; + + /* array of pointers ot page */ + struct page **page_array; + + /* array of lli */ + struct sep_lli_entry_t *lli_array; + + /* count */ + unsigned long count; + + /* result */ + int result; + + /*------------------------ + CODE + --------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_lock_user_pages start\n"); + + error = 0; + + /* set start and end pages and num pages */ + end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT; + start_page = app_virt_addr >> PAGE_SHIFT; + num_pages = end_page - start_page + 1; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: app_virt_addr is %08lx\n", + app_virt_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: data_size is %lu\n", + data_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: start_page is %lu\n", + start_page); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: end_page is %lu\n", + end_page); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: num_pages is %lu\n", + num_pages); + + /* allocate array of pages structure pointers */ + page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); + if (!page_array) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: kmalloc for page_array failed\n"); + + error = -ENOMEM; + goto end_function; + } + + lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); + if (!lli_array) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: kmalloc for lli_array failed\n"); + + error = -ENOMEM; + goto end_function_with_error1; + } + + /* convert the application virtual address into a set of physical */ + down_read(¤t->mm->mmap_sem); + result = get_user_pages(current, current->mm, app_virt_addr, num_pages, 1, 0, + page_array, + 0); + up_read(¤t->mm->mmap_sem); + + /* check the number of pages locked - if not all then exit with error */ + if (result != num_pages) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver: not all pages locked by get_user_pages\n"); + + error = -ENOMEM; + goto end_function_with_error2; + } + + /* flush the cache */ + for (count = 0; count < num_pages; count++) + flush_dcache_page(page_array[count]); + + /* set the start address of the first page - app data may start not at + the beginning of the page */ + lli_array[0].physical_address = ( + (unsigned long)page_to_phys(page_array[0])) + + (app_virt_addr & (~PAGE_MASK)) ; + + /* check that not all the data is in the first page only */ + if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size) + lli_array[0].block_size = data_size; + else + lli_array[0].block_size = PAGE_SIZE - (app_virt_addr & (~PAGE_MASK)); + + /* debug print */ + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", + lli_array[0].physical_address, + lli_array[0].block_size); + + /* go from the second page to the prev before last */ + for (count = 1; count < (num_pages - 1); count++) { + lli_array[count].physical_address = + (unsigned long)page_to_phys(page_array[count]); + lli_array[count].block_size = PAGE_SIZE; + + DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, + "lli_array[%lu].physical_address is %08lx, \ + lli_array[%lu].block_size is %lu\n", + count, lli_array[count].physical_address, + count, + lli_array[count].block_size); + } + + /* if more then 1 pages locked - then update for the last page size needed */ + if (num_pages > 1) { + /* update the address of the last page */ + lli_array[count].physical_address = + (unsigned long)page_to_phys(page_array[count]); + + /* set the size of the last page */ + lli_array[count].block_size = (app_virt_addr + data_size) & + (~PAGE_MASK); + + if (lli_array[count].block_size == 0) { + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, + "app_virt_addr is %08lx\n", + app_virt_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "data_size is %lu\n", data_size); + while (1); + } + DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, + "lli_array[%lu].physical_address is %08lx, \ + lli_array[%lu].block_size is %lu\n", + count, lli_array[count].physical_address, + count, + lli_array[count].block_size); + } + + /* set output params */ + *lli_array_ptr = lli_array; + *num_pages_ptr = num_pages; + *page_array_ptr = page_array; + + goto end_function; + +end_function_with_error2: + + /* release the cache */ + for (count = 0; count < num_pages; count++) + page_cache_release(page_array[count]); + + /* free lli array */ + kfree(lli_array); + +end_function_with_error1: + + /* free page array */ + kfree(page_array); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_lock_user_pages end\n"); + + return 0; +} + +/* + This function locks all the physical pages of the kernel virtual buffer + and construct a basic lli array, where each entry holds the physical + page address and the size that application data holds in this physical pages +*/ +int sep_lock_kernel_pages(unsigned long kernel_virt_addr, + unsigned long data_size, + unsigned long *num_pages_ptr, + struct sep_lli_entry_t **lli_array_ptr, + struct page ***page_array_ptr) + +{ + /* error */ + int error; + + /* the the page of the end address of the user space buffer */ + unsigned long end_page; + + /* the page of the start address of the user space buffer */ + unsigned long start_page; + + /* the range in pages */ + unsigned long num_pages; + + /* array of lli */ + struct sep_lli_entry_t *lli_array; + + /* next kernel address to map */ + unsigned long next_kernel_address; + + /* count */ + unsigned long count; + + + /*------------------------ + CODE + --------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_lock_kernel_pages start\n"); + + error = 0; + + /* set start and end pages and num pages */ + end_page = (kernel_virt_addr + data_size - 1) >> PAGE_SHIFT; + start_page = kernel_virt_addr >> PAGE_SHIFT; + num_pages = end_page - start_page + 1; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: kernel_virt_addr is %08lx\n", + kernel_virt_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: data_size is %lu\n", + data_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: start_page is %lx\n", + start_page); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: end_page is %lx\n", + end_page); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: num_pages is %lu\n", + num_pages); + + lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); + if (!lli_array) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver: kmalloc for lli_array failed\n"); + + error = -ENOMEM; + goto end_function; + } + + /* set the start address of the first page - app data may start not at + the beginning of the page */ + lli_array[0].physical_address = + (unsigned long)virt_to_phys((unsigned long *)kernel_virt_addr); + + /* check that not all the data is in the first page only */ + if ((PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK))) >= data_size) + lli_array[0].block_size = data_size; + else + lli_array[0].block_size = + PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK)); + + /* debug print */ + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", + lli_array[0].physical_address, + lli_array[0].block_size); + + /* advance the address to the start of the next page */ + next_kernel_address = (kernel_virt_addr & PAGE_MASK) + PAGE_SIZE; + + /* go from the second page to the prev before last */ + for (count = 1; count < (num_pages - 1); count++) { + lli_array[count].physical_address = + (unsigned long)virt_to_phys((unsigned long *)next_kernel_address); + lli_array[count].block_size = PAGE_SIZE; + + DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, + "lli_array[%lu].physical_address is %08lx, \ + lli_array[%lu].block_size is %lu\n", + count, lli_array[count].physical_address, count, + lli_array[count].block_size); + + next_kernel_address += PAGE_SIZE; + } + + /* if more then 1 pages locked - then update for the last page size needed */ + if (num_pages > 1) { + /* update the address of the last page */ + lli_array[count].physical_address = + (unsigned long)virt_to_phys((unsigned long *)next_kernel_address); + + /* set the size of the last page */ + lli_array[count].block_size = + (kernel_virt_addr + data_size) & (~PAGE_MASK); + + if (lli_array[count].block_size == 0) { + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, + "app_virt_addr is %08lx\n", + kernel_virt_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "data_size is %lu\n", data_size); + while (1); + } + + DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, + "lli_array[%lu].physical_address is %08lx, \ + lli_array[%lu].block_size is %lu\n", + count, lli_array[count].physical_address, + count, + lli_array[count].block_size); + } + + /* set output params */ + *lli_array_ptr = lli_array; + *num_pages_ptr = num_pages; + *page_array_ptr = 0; + + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_lock_kernel_pages end\n"); + + return 0; +} + +/* + This function releases all the application virtual buffer physical pages, + that were previously locked +*/ +int sep_free_dma_pages(struct page **page_array_ptr, + unsigned long num_pages, + unsigned long dirtyFlag) +{ + /* count */ + unsigned long count; + + /*------------------- + CODE + ---------------------*/ + + if (dirtyFlag) { + for (count = 0; count < num_pages; count++) { + /* the out array was written, therefore the data was changed */ + if (!PageReserved(page_array_ptr[count])) + SetPageDirty(page_array_ptr[count]); + page_cache_release(page_array_ptr[count]); + } + } else { + /* free in pages - the data was only read, therefore no update was done + on those pages */ + for (count = 0; count < num_pages; count++) + page_cache_release(page_array_ptr[count]); + } + + if (page_array_ptr) + /* free the array */ + kfree(page_array_ptr); + + return 0; +} + +/* + This function raises interrupt to SEP that signals that is has a new + command from HOST +*/ +static void sep_send_command_handler() +{ + + unsigned long count; + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_send_command_handler start\n"); + + sep_set_time(0, 0); + + /* flash cache */ + flush_cache_all(); + + for (count = 0; count < 12 * 4; count += 4) + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "Word %lu of the message is %lu\n", + count, + *((unsigned long *)(g_sep_shared_area_addr + count))); + + /* update counter */ + sep_host_to_sep_send_counter++; + + /* send interrupt to SEP */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + + HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_send_command_handler end\n"); + + return; +} + +/* + This function raises interrupt to SEPm that signals that is has a + new command from HOST +*/ +static void sep_send_reply_command_handler() +{ + unsigned long count; + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_send_reply_command_handler start\n"); + + /* flash cache */ + flush_cache_all(); + + for (count = 0; count < 12 * 4; count += 4) + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "Word %lu of the message is %lu\n", + count, + *((unsigned long *)(g_sep_shared_area_addr + count))); + + + /* update counter */ + sep_host_to_sep_send_counter++; + + /* send the interrupt to SEP */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_HOST_SEP_GPR2_REG_ADDR, + sep_host_to_sep_send_counter); + + /* update both counters */ + sep_host_to_sep_send_counter++; + + sep_sep_to_host_reply_counter++; + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_send_reply_command_handler end\n"); + + return; +} + + + +/* + This function handles the allocate data pool memory request + This function returns calculates the physical address of the + allocated memory, and the offset of this area from the mapped address. + Therefore, the FVOs in user space can calculate the exact virtual + address of this allocated memory +*/ +static int sep_allocate_data_pool_memory_handler(unsigned long arg) +{ + /* error */ + int error; + + /* command paramaters */ + struct sep_driver_alloc_t command_args; + + /*------------------------- + CODE + ----------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_allocate_data_pool_memory_handler start\n"); + + + error = copy_from_user(&command_args, + (void *)arg, + sizeof(struct sep_driver_alloc_t)); + if (error) + goto end_function; + + /* allocate memory */ + if ( + (sep_data_pool_bytes_allocated + command_args.num_bytes) > + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { + error = -ENOTTY; + goto end_function; + } + + /* set the virtual and physical address */ + command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + + sep_data_pool_bytes_allocated; + command_args.phys_address = g_sep_phys_shared_area_addr + + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + + sep_data_pool_bytes_allocated; + + /* write the memory back to the user space */ + error = copy_to_user((void *)arg, + (void *)&command_args, + sizeof(struct sep_driver_alloc_t)); + if (error) + goto end_function; + + /* set the allocation */ + sep_data_pool_bytes_allocated += command_args.num_bytes; + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_allocate_data_pool_memory_handler end\n"); + + return error; +} + +/* + This function handles write into allocated data pool command +*/ +static int sep_write_into_data_pool_handler(unsigned long arg) +{ + /* error */ + int error; + + /* virtual address */ + unsigned long virt_address; + + /* application in address */ + unsigned long app_in_address; + + /* number of bytes */ + unsigned long num_bytes; + + /* address of the data pool */ + unsigned long data_pool_area_addr; + + /*-------------------------- + CODE + -----------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_write_into_data_pool_handler start\n"); + + /* get the application address */ + error = get_user(app_in_address, + &(((struct sep_driver_write_t *)arg)->app_address)); + if (error) + goto end_function; + + /* get the virtual kernel address address */ + error = get_user(virt_address, + &(((struct sep_driver_write_t *)arg)->datapool_address)); + if (error) + goto end_function; + + /* get the number of bytes */ + error = get_user(num_bytes, &(((struct sep_driver_write_t *)arg)->num_bytes)); + if (error) + goto end_function; + + /* calculate the start of the data pool */ + data_pool_area_addr = g_sep_shared_area_addr + + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; + + + /* check that the range of the virtual kernel address is correct */ + if ((virt_address < data_pool_area_addr) || + (virt_address > (data_pool_area_addr + + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { + error = -ENOTTY; + goto end_function; + } + + /* copy the application data */ + error = copy_from_user((void *)virt_address, + (void *)app_in_address, + num_bytes); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_write_into_data_pool_handler end\n"); + + return error; +} + +/* + this function handles the read from data pool command +*/ +static int sep_read_from_data_pool_handler(unsigned long arg) +{ + /* error */ + int error; + + /* virtual address of dest application buffer */ + unsigned long app_out_address; + + /* virtual address of the data pool */ + unsigned long virt_address; + + /* number bytes */ + unsigned long num_bytes; + + /* address of the data pool */ + unsigned long data_pool_area_addr; + + /*------------------------ + CODE + -----------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_read_from_data_pool_handler start\n"); + + /* get the application address */ + error = get_user(app_out_address, + &(((struct sep_driver_write_t *)arg)->app_address)); + if (error) + goto end_function; + + /* get the virtual kernel address address */ + error = get_user(virt_address, + &(((struct sep_driver_write_t *)arg)->datapool_address)); + if (error) + goto end_function; + + /* get the number of bytes */ + error = get_user(num_bytes, &(((struct sep_driver_write_t *)arg)->num_bytes)); + if (error) + goto end_function; + + /* calculate the start of the data pool */ + data_pool_area_addr = g_sep_shared_area_addr + + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; + + /* check that the range of the virtual kernel address is correct */ + if ((virt_address < data_pool_area_addr) || + (virt_address > (data_pool_area_addr + + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { + error = -ENOTTY; + goto end_function; + } + + /* copy the application data */ + error = copy_to_user((void *)app_out_address, (void *)virt_address, + num_bytes); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_read_from_data_pool_handler end\n"); + + return error; +} + + +/* + this function handles tha request for creation of the DMA table + for the synchronic symmetric operations (AES,DES) +*/ +static int sep_create_sync_dma_tables_handler(unsigned long arg) +{ + /* error */ + int error; + + /* command arguments */ + struct sep_driver_build_sync_table_t command_args; + + /*------------------------ + CODE + --------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_create_sync_dma_tables_handler start\n"); + + error = copy_from_user(&command_args, + (void *)arg, + sizeof(struct sep_driver_build_sync_table_t)); + if (error) + goto end_function; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "app_in_address is %08lx\n", + command_args.app_in_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "app_out_address is %08lx\n", + command_args.app_out_address); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "data_size is %lu\n", + command_args.data_in_size); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "block_size is %lu\n", + command_args.block_size); + + + /* check if we need to build only input table or input/output */ + if (command_args.app_out_address) + /* prepare input and output tables */ + error = sep_prepare_input_output_dma_table(command_args.app_in_address, + command_args.app_out_address, + command_args.data_in_size, + command_args.block_size, + &command_args.in_table_address, + &command_args.out_table_address, + &command_args.in_table_num_entries, + &command_args.out_table_num_entries, + &command_args.table_data_size, + command_args.isKernelVirtualAddress); + else + /* prepare input tables */ + error = sep_prepare_input_dma_table(command_args.app_in_address, + command_args.data_in_size, + command_args.block_size, + &command_args.in_table_address, + &command_args.in_table_num_entries, + &command_args.table_data_size, + command_args.isKernelVirtualAddress); + + if (error) + goto end_function; + + /* copy to user */ + error = copy_to_user((void *)arg, + (void *)&command_args, + sizeof(struct sep_driver_build_sync_table_t)); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_create_sync_dma_tables_handler end\n"); + + return error; +} + +/* + this function handles the request for freeing dma table for synhronic actions +*/ +int sep_free_dma_table_data_handler() +{ + /*------------------------- + CODE + -----------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_free_dma_table_data_handler start\n"); + + /* free input pages array */ + sep_free_dma_pages(sep_in_page_array, + sep_in_num_pages, + 0); + + /* free output pages array if needed */ + if (sep_out_page_array) + sep_free_dma_pages(sep_out_page_array, + sep_out_num_pages, + 1); + + /* reset all the values */ + sep_in_page_array = 0; + sep_out_page_array = 0; + sep_in_num_pages = 0; + sep_out_num_pages = 0; + + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_free_dma_table_data_handler end\n"); + + return 0; +} + +/* + this function handles the request to create the DMA tables for flow +*/ +static int sep_create_flow_dma_tables_handler(unsigned long arg) +{ + /* error */ + int error; + + /* command arguments */ + struct sep_driver_build_flow_table_t command_args; + + /* first table - output */ + struct sep_lli_entry_t first_table_data; + + /* dma table data */ + struct sep_lli_entry_t last_table_data; + + /* pointer to the info entry of the previuos DMA table */ + struct sep_lli_entry_t *prev_info_entry_ptr; + + /* pointer to the flow data strucutre */ + struct sep_flow_context_t *flow_context_ptr; + + /*------------------------ + CODE + --------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_create_flow_dma_tables_handler start\n"); + + /* init variables */ + prev_info_entry_ptr = 0; + first_table_data.physical_address = 0xffffffff; + + /* find the free structure for flow data */ + error = sep_find_flow_context(SEP_FREE_FLOW_ID, &flow_context_ptr); + if (error) + goto end_function; + + error = copy_from_user(&command_args, + (void *)arg, + sizeof(struct sep_driver_build_flow_table_t)); + if (error) + goto end_function; + + /* create flow tables */ + error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, + command_args.virt_buff_data_addr, + flow_context_ptr, + &first_table_data, + &last_table_data, + command_args.isKernelVirtualAddress); + if (error) + goto end_function_with_error; + + /* check if flow is static */ + if (!command_args.flow_type) + /* point the info entry of the last to the info entry of the first */ + last_table_data = first_table_data; + + /* set output params */ + command_args.first_table_addr = first_table_data.physical_address; + command_args.first_table_num_entries = + ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & + SEP_NUM_ENTRIES_MASK); + command_args.first_table_data_size = + (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); + + /* send the parameters to user application */ + error = copy_to_user((void *)arg, + &command_args, + sizeof(struct sep_driver_build_flow_table_t)); + if (error) + goto end_function_with_error; + + /* all the flow created - update the flow entry with temp id */ + flow_context_ptr->flow_id = SEP_TEMP_FLOW_ID; + + /* set the processing tables data in the context */ + if (command_args.input_output_flag == SEP_DRIVER_IN_FLAG) + flow_context_ptr->input_tables_in_process = first_table_data; + else + flow_context_ptr->output_tables_in_process = first_table_data; + + goto end_function; + +end_function_with_error: + + /* free the allocated tables */ + sep_deallocated_flow_tables(&first_table_data); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_create_flow_dma_tables_handler end\n"); + + return error; + +} + +/* + this functio n handles add tables to flow +*/ +static int sep_add_flow_tables_handler(unsigned long arg) +{ + /* error */ + int error; + + /* number of entries */ + unsigned long num_entries; + + /* command arguments */ + struct sep_driver_add_flow_table_t command_args; + + /* pointer to the flow data strucutre */ + struct sep_flow_context_t *flow_context_ptr; + + /* first dma table data */ + struct sep_lli_entry_t first_table_data; + + /* last dma table data */ + struct sep_lli_entry_t last_table_data; + + /* pointer to the info entry of the current DMA table */ + struct sep_lli_entry_t *info_entry_ptr; + + /*-------------------------- + CODE + ----------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_add_flow_tables_handler start\n"); + + /* get input parameters */ + error = copy_from_user(&command_args, + (void *)arg, + sizeof(struct sep_driver_add_flow_table_t)); + if (error) + goto end_function; + + /* find the flow structure for the flow id */ + error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); + if (error) + goto end_function; + + /* prepare the flow dma tables */ + error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, + command_args.virt_buff_data_addr, + flow_context_ptr, + &first_table_data, + &last_table_data, + command_args.isKernelVirtualAddress); + if (error) + goto end_function_with_error; + + /* now check if there is already an existing add table for this flow */ + if (command_args.inputOutputFlag == SEP_DRIVER_IN_FLAG) { + /* this buffer was for input buffers */ + if (flow_context_ptr->input_tables_flag) { + /* add table already exists - add the new tables to the end + of the previous */ + num_entries = (flow_context_ptr->last_input_table.block_size >> + SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; + + info_entry_ptr = + (struct sep_lli_entry_t *) + (flow_context_ptr->last_input_table.physical_address + + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); + + /* connect to list of tables */ + *info_entry_ptr = first_table_data; + + /* set the first table data */ + first_table_data = flow_context_ptr->first_input_table; + } else { + /* set the input flag */ + flow_context_ptr->input_tables_flag = 1; + + /* set the first table data */ + flow_context_ptr->first_input_table = first_table_data; + } + /* set the last table data */ + flow_context_ptr->last_input_table = last_table_data; + } else /* this is output tables */ { + /* this buffer was for input buffers */ + if (flow_context_ptr->output_tables_flag) { + /* add table already exists - add the new tables to + the end of the previous */ + num_entries = (flow_context_ptr->last_output_table.block_size >> + SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; + + info_entry_ptr = + (struct sep_lli_entry_t *) + (flow_context_ptr->last_output_table.physical_address + + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); + + /* connect to list of tables */ + *info_entry_ptr = first_table_data; + + /* set the first table data */ + first_table_data = flow_context_ptr->first_output_table; + } else { + /* set the input flag */ + flow_context_ptr->output_tables_flag = 1; + + /* set the first table data */ + flow_context_ptr->first_output_table = first_table_data; + } + /* set the last table data */ + flow_context_ptr->last_output_table = last_table_data; + } + + /* set output params */ + command_args.first_table_addr = first_table_data.physical_address; + command_args.first_table_num_entries = ((first_table_data.block_size >> + SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); + command_args.first_table_data_size = + (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); + + /* send the parameters to user application */ + error = copy_to_user((void *)arg, + &command_args, + sizeof(struct sep_driver_add_flow_table_t)); + if (error) + goto end_function_with_error; + +end_function_with_error: + + /* free the allocated tables */ + sep_deallocated_flow_tables(&first_table_data); + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_add_flow_tables_handler end\n"); + + return error; +} + +/* + this function add the flow add message to the specific flow +*/ +static int sep_add_flow_tables_message_handler(unsigned long arg) +{ + /* error */ + int error; + + /* arguments */ + struct sep_driver_add_message_t command_args; + + /* flow context */ + struct sep_flow_context_t *flow_context_ptr; + + /*---------------------------- + CODE + ------------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_add_flow_tables_message_handler start\n"); + + error = copy_from_user(&command_args, + (void *)arg, + sizeof(struct sep_driver_add_message_t)); + if (error) + goto end_function; + + /* check input */ + if (command_args.message_size_in_bytes > + SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES) { + error = -ENOMEM; + goto end_function; + } + + /* find the flow context */ + error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); + if (error) + goto end_function; + + /* copy the message into context */ + flow_context_ptr->message_size_in_bytes = command_args.message_size_in_bytes; + + error = copy_from_user(flow_context_ptr->message, + (void *)command_args.message_address, + command_args.message_size_in_bytes); + + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_add_flow_tables_message_handler end\n"); + + return error; +} + + +/* + this function returns the physical and virtual addresses of the static pool +*/ +static int sep_get_static_pool_addr_handler(unsigned long arg) +{ + /* error */ + int error; + + /* command arguments */ + struct sep_driver_static_pool_addr_t command_args; + + /*----------------------------- + CODE + ------------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_get_static_pool_addr_handler start\n"); + + /*prepare the output parameters in the struct */ + command_args.physical_static_address = g_sep_phys_shared_area_addr + + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; + command_args.virtual_static_address = g_sep_shared_area_addr + + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; + + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:physical_static_address is %08lx, virtual_static_address %08lx\n", + command_args.physical_static_address, + command_args.virtual_static_address); + + /* send the parameters to user application */ + error = copy_to_user((void *)arg, + &command_args, + sizeof(struct sep_driver_static_pool_addr_t)); + if (error) + goto end_function; + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_get_static_pool_addr_handler end\n"); + + return error; +} + +/* + this address gets the offset of the physical address from the start + of the mapped area +*/ +static int sep_get_physical_mapped_offset_handler(unsigned long arg) +{ + /* error */ + int error; + + /* command arguments */ + struct sep_driver_get_mapped_offset_t command_args; + + /*----------------------------- + CODE + ------------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_get_physical_mapped_offset_handler start\n"); + + error = copy_from_user(&command_args, + (void *)arg, + sizeof(struct sep_driver_get_mapped_offset_t)); + if (error) + goto end_function; + + if (command_args.physical_address < g_sep_phys_shared_area_addr) { + error = -ENOTTY; + goto end_function; + } + + /*prepare the output parameters in the struct */ + command_args.offset = command_args.physical_address - + g_sep_phys_shared_area_addr; + + DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:physical_address is %08lx, offset is %lu\n", + command_args.physical_address, + command_args.offset); + + /* send the parameters to user application */ + error = copy_to_user((void *)arg, + &command_args, + sizeof(struct sep_driver_get_mapped_offset_t)); + if (error) + goto end_function; + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n"); + + return error; +} + + +/* + ? +*/ +static int sep_start_handler(void) +{ + /* reg val */ + unsigned long reg_val; + + /* error */ + unsigned long error; + + /*----------------------------- + CODE + ------------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_start_handler start\n"); + + error = 0; + + /* wait in polling for message from SEP */ + do { + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR3_REG_ADDR, reg_val); + } while (!reg_val); + + /* check the value */ + if (reg_val == 0x1) { + /* fatal error - read erro status from GPRO */ + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR0_REG_ADDR, error); + goto end_function; + } + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_start_handler end\n"); + + return error; +} + +/* + this function handles the request for SEP initialization +*/ +static int sep_init_handler(unsigned long arg) +{ + /* word from message */ + unsigned long message_word; + + /* message ptr */ + unsigned long *message_ptr; + + /* command arguments */ + struct sep_driver_init_t command_args; + + /* counter */ + unsigned long counter; + + /* error */ + unsigned long error; + + /* reg val */ + unsigned long reg_val; + + /*------------------- + CODE + ---------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_init_handler start\n"); + + error = 0; + + error = copy_from_user(&command_args, (void *)arg, + sizeof(struct sep_driver_init_t)); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_init_handler - finished copy_from_user \n"); + + if (error) + goto end_function; + + /* PATCH - configure the DMA to single -burst instead of multi-burst */ + /*sep_configure_dma_burst();*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_init_handler - finished sep_configure_dma_burst \n"); + + message_ptr = (unsigned long *)command_args.message_addr; + + /* set the base address of the SRAM */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + + HW_SRAM_ADDR_REG_ADDR, + HW_CC_SRAM_BASE_ADDRESS); + + for (counter = 0 ; + counter < command_args.message_size_in_words; + counter++, message_ptr++) { + get_user(message_word, message_ptr); + + /* write data to SRAM */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_SRAM_DATA_REG_ADDR, + message_word); + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:message_word is %lu\n", + message_word); + + /* wait for write complete */ + SEP_WAIT_SRAM_WRITE_COMPLETE(); + } + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_init_handler - finished getting messages from user space\n"); + + /* signal SEP */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_HOST_SEP_GPR0_REG_ADDR, + 0x1); + + do { + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR3_REG_ADDR, reg_val); + } while (!(reg_val & 0xFFFFFFFD)); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n"); + + /* check the value */ + if (reg_val == 0x1) { + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:init failed\n"); + + SEP_READ_REGISTER(g_sep_reg_base_address + 0x8060, error); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:sw monitor is %lu\n", + error); + + /* fatal error - read erro status from GPRO */ + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_HOST_GPR0_REG_ADDR, + error); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:error is %lu\n", error); + goto end_function; + } + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_init_handler end\n"); + + return error; + +} + +/* + this function handles the request cache and resident reallocation +*/ +static int sep_realloc_cache_resident_handler(unsigned long arg) +{ + /* error */ + int error; + + /* physical cache addr */ + unsigned long phys_cache_address; + + /* physical resident addr */ + unsigned long phys_resident_address; + + /* command arguments */ + struct sep_driver_realloc_cache_resident_t command_args; + + /*------------------ + CODE + ---------------------*/ + + /* copy the data */ + error = copy_from_user(&command_args, + (void *)arg, + sizeof(struct sep_driver_realloc_cache_resident_t)); + if (error) + goto end_function; + + /* copy cache and resident to the their intended locations */ + error = sep_copy_cache_resident_to_area(command_args.cache_addr, + command_args.cache_size_in_bytes, + command_args.resident_addr, + command_args.resident_size_in_bytes, + &phys_cache_address, + &phys_resident_address); + if (error) + goto end_function; + + /* lock the area (if needed) */ + sep_lock_cache_resident_area(); + + command_args.new_base_addr = g_sep_phys_shared_area_addr; + + /* find the new base address according to the lowest address between + cache, resident and shared area */ + if (phys_resident_address < command_args.new_base_addr) + command_args.new_base_addr = phys_resident_address; + if (phys_cache_address < command_args.new_base_addr) + command_args.new_base_addr = phys_cache_address; + + /* set the return parameters */ + command_args.new_cache_addr = phys_cache_address; + command_args.new_resident_addr = phys_resident_address; + + + /* set the new shared area */ + command_args.new_shared_area_addr = g_sep_phys_shared_area_addr; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:command_args.new_shared_area_addr is %08lx\n", + command_args.new_shared_area_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:command_args.new_base_addr is %08lx\n", + command_args.new_base_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:command_args.new_resident_addr is %08lx\n", + command_args.new_resident_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:command_args.new_cache_addr is %08lx\n", + command_args.new_cache_addr); + + /* return to user */ + error = copy_to_user((void *)arg, + (void *)&command_args, + sizeof(struct sep_driver_realloc_cache_resident_t)); + +end_function: + + return error; +} + +/* + this function handles the request for get time +*/ +static int sep_get_time_handler(unsigned long arg) +{ + /* error */ + int error; + + /* command arguments */ + struct sep_driver_get_time_t command_args; + + /*------------------------ + CODE + --------------------------*/ + + error = sep_set_time(&command_args.time_physical_address, + &command_args.time_value); + + /* return to user */ + error = copy_to_user((void *)arg, + (void *)&command_args, + sizeof(struct sep_driver_get_time_t)); + + return error; + +} + +/* + This api handles the setting of API mode to blocking or non-blocking +*/ +static int sep_set_api_mode_handler(unsigned long arg) +{ + /* error */ + int error; + + /* flag */ + unsigned long mode_flag; + + /*---------------------------- + CODE + -----------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_set_api_mode_handler start\n"); + + error = get_user( + mode_flag, &(((struct sep_driver_set_api_mode_t *)arg)->mode)); + if (error) + goto end_function; + + /* set the global flag */ + g_sep_block_mode_flag = mode_flag; + + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_set_api_mode_handler end\n"); + + return error; +} + +/* + This API handles the end transaction request +*/ +static int sep_end_transaction_handler(unsigned long arg) +{ + /*---------------------------- + CODE + -----------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_end_transaction_handler start\n"); + +#if 0/*!SEP_DRIVER_POLLING_MODE*/ + /* close IMR */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_IMR_REG_ADDR, 0x7FFF); + + /* release IRQ line */ + free_irq(SEP_DIRVER_IRQ_NUM, &g_sep_reg_base_address); + + /* lock the sep mutex */ + mutex_unlock(&sep_mutex); +#endif + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_end_transaction_handler end\n"); + + return 0; +} + +/* handler for flow done interrupt */ +static void sep_flow_done_handler(struct work_struct *work) +{ + /* flow context_ptr */ + struct sep_flow_context_t *flow_data_ptr; + /*------------------------- + CODE + ---------------------------*/ + + /* obtain the mutex */ + mutex_lock(&sep_mutex); + + /* get the pointer to context */ + flow_data_ptr = (struct sep_flow_context_t *)work; + + /* free all the current input tables in sep */ + sep_deallocated_flow_tables(&flow_data_ptr->input_tables_in_process); + + /* free all the current tables output tables in SEP (if needed) */ + if (flow_data_ptr->output_tables_in_process.physical_address != 0xffffffff) + sep_deallocated_flow_tables(&flow_data_ptr->output_tables_in_process); + + /* check if we have additional tables to be sent to SEP only input + flag may be checked */ + if (flow_data_ptr->input_tables_flag) { + /* copy the message to the shared RAM and signal SEP */ + memcpy((void *)flow_data_ptr->message, + (void *)g_sep_shared_area_addr, + flow_data_ptr->message_size_in_bytes); + + SEP_WRITE_REGISTER(g_sep_reg_base_address + + HW_HOST_HOST_SEP_GPR2_REG_ADDR, + 0x2); + } + mutex_unlock(&sep_mutex); +} + + +/* + This function creates a list of tables for flow and returns the data for + the first and last tables of the list +*/ +static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, + unsigned long first_buff_addr, + struct sep_flow_context_t *flow_data_ptr, + struct sep_lli_entry_t *first_table_data_ptr, + struct sep_lli_entry_t *last_table_data_ptr, + bool isKernelVirtualAddress) +{ + /* error */ + int error; + + /* virtaul address of one buffer */ + unsigned long virt_buff_addr; + + /* virtual size of one buffer */ + unsigned long virt_buff_size; + + /* table data for each created table */ + struct sep_lli_entry_t table_data; + + /* info entry */ + struct sep_lli_entry_t *info_entry_ptr; + + /* prevouis info entry */ + struct sep_lli_entry_t *prev_info_entry_ptr; + + /* counter */ + unsigned long i; + + /*------------------------------- + CODE + ----------------------------------*/ + + /* init vars */ + error = 0; + prev_info_entry_ptr = 0; + + /* init the first table to default */ + table_data.physical_address = 0xffffffff; + first_table_data_ptr->physical_address = 0xffffffff; + table_data.block_size = 0; + + for (i = 0; i < num_virtual_buffers; i++) { + /* get the virtual buffer address */ + error = get_user(virt_buff_addr, &first_buff_addr); + if (error) + goto end_function; + + /* get the virtual buffer size */ + first_buff_addr++; + error = get_user(virt_buff_size, &first_buff_addr); + if (error) + goto end_function; + + /* advance the address to point to the next pair of address|size */ + first_buff_addr++; + + /* now prepare the one flow LLI table from the data */ + error = sep_prepare_one_flow_dma_table(virt_buff_addr, + virt_buff_size, + &table_data, + &info_entry_ptr, + flow_data_ptr, + isKernelVirtualAddress); + if (error) + goto end_function; + + if (i == 0) { + /* if this is the first table - save it to return to the user + application */ + *first_table_data_ptr = table_data; + + /* set the pointer to info entry */ + prev_info_entry_ptr = info_entry_ptr; + } else { + /* not first table - the previous table info entry should + be updated */ + prev_info_entry_ptr->block_size = + (0x1 << SEP_INT_FLAG_OFFSET_IN_BITS) | + (table_data.block_size); + + /* set the pointer to info entry */ + prev_info_entry_ptr = info_entry_ptr; + } + } + + /* set the last table data */ + *last_table_data_ptr = table_data; + +end_function: + + return error; +} + + +/* + This function creates one DMA table for flow and returns its data, + and pointer to its info entry +*/ +static int sep_prepare_one_flow_dma_table( + unsigned long virt_buff_addr, + unsigned long virt_buff_size, + struct sep_lli_entry_t *table_data, + struct sep_lli_entry_t **info_entry_ptr, + struct sep_flow_context_t *flow_data_ptr, + bool isKernelVirtualAddress) +{ + /* error */ + int error; + + /* the range in pages */ + unsigned long lli_array_size; + + /* array of pointers ot page */ + struct sep_lli_entry_t *lli_array; + + /* pointer to the entry in the dma table */ + struct sep_lli_entry_t *flow_dma_table_entry_ptr; + + /* address of the dma table */ + unsigned long *start_dma_table_ptr; + + /* total table data counter */ + unsigned long dma_table_data_count; + + /* pointer that will keep the pointer t the pages of the virtual buffer */ + struct page **page_array_ptr; + + /* counter */ + unsigned long entry_count; + + /*------------------------------- + CODE + ----------------------------------*/ + + /* find the space for the new table */ + error = sep_find_free_flow_dma_table_space(&start_dma_table_ptr); + if (error) + goto end_function; + + /* check if the pages are in Kernel Virtual Address layout */ + if (isKernelVirtualAddress == true) + /* lock kernel buffer in the memory */ + error = sep_lock_kernel_pages(virt_buff_addr, + virt_buff_size, + &lli_array_size, + &lli_array, + &page_array_ptr); + else + /* lock user buffer in the memory */ + error = sep_lock_user_pages(virt_buff_addr, + virt_buff_size, + &lli_array_size, + &lli_array, + &page_array_ptr); + + if (error) + goto end_function; + + /* set the pointer to page array at the beginning of table - this table is + now considered taken */ + *start_dma_table_ptr = lli_array_size; + + /* point to the place of the pages pointers of the table */ + start_dma_table_ptr++; + + /* set the pages pointer */ + *start_dma_table_ptr = (unsigned long)page_array_ptr; + + /* set the pointer to the first entry */ + flow_dma_table_entry_ptr = (struct sep_lli_entry_t *)(++start_dma_table_ptr); + + /* now create the entries for table */ + for (dma_table_data_count = entry_count = 0; + entry_count < lli_array_size; + entry_count++) { + flow_dma_table_entry_ptr->physical_address = + lli_array[entry_count].physical_address; + + flow_dma_table_entry_ptr->block_size = + lli_array[entry_count].block_size; + + /* set the total data of a table */ + dma_table_data_count += lli_array[entry_count].block_size; + + flow_dma_table_entry_ptr++; + } + + /* set the physical address */ + table_data->physical_address = virt_to_phys(start_dma_table_ptr); + + /* set the num_entries and total data size */ + table_data->block_size = ((lli_array_size + 1) << + SEP_NUM_ENTRIES_OFFSET_IN_BITS) | + (dma_table_data_count); + + /* set the info entry */ + flow_dma_table_entry_ptr->physical_address = 0xffffffff; + flow_dma_table_entry_ptr->block_size = 0; + + /* set the pointer to info entry */ + *info_entry_ptr = flow_dma_table_entry_ptr; + + /* the array of the lli entries */ + kfree(lli_array); + +end_function: + + return error; +} + + +/* + This function returns pointer to the flow data structure + that conatins the given id +*/ +static int sep_find_flow_context( + unsigned long flow_id, + struct sep_flow_context_t **flow_data_ptr) +{ + /* count */ + unsigned long count; + + /* error */ + int error; + + /*----------------------- + CODE + ---------------------------*/ + + error = 0; + + /* + always search for flow with id default first - in case we + already started working on the flow there can be no situation + when 2 flows are with default flag + */ + for (count = 0; count < SEP_DRIVER_NUM_FLOWS; count++) { + if (g_sep_flows_data_array[count].flow_id == flow_id) { + *flow_data_ptr = &g_sep_flows_data_array[count]; + break; + } + } + + if (count == SEP_DRIVER_NUM_FLOWS) + /* no flow found */ + error = -ENOMEM; + + return error; +} + +/* + this function find a space for the new flow dma table +*/ +static int sep_find_free_flow_dma_table_space( + unsigned long **table_address_ptr) +{ + /* error */ + int error; + + /* pointer to the id field of the flow dma table */ + unsigned long *start_table_ptr; + + /* start address of the flow dma area */ + unsigned long flow_dma_area_start_addr; + + /* end address of the flow dma area */ + unsigned long flow_dma_area_end_addr; + + /* maximum table size in words */ + unsigned long table_size_in_words; + + /*--------------------- + CODE + -----------------------*/ + + error = 0; + + /* find the start address of the flow DMA table area */ + flow_dma_area_start_addr = g_sep_shared_area_addr + + SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES; + + /* set end address of the flow table area */ + flow_dma_area_end_addr = flow_dma_area_start_addr + + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES; + + /* set table size in words */ + table_size_in_words = SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE * + (sizeof(struct sep_lli_entry_t) / sizeof(long)) + 2; + + /* set the pointer to the start address of DMA area */ + start_table_ptr = (unsigned long *)flow_dma_area_start_addr; + + /* find the space for the next table */ + while (((*start_table_ptr & 0x7FFFFFFF) != 0) && + ((unsigned long)start_table_ptr < + flow_dma_area_end_addr)) + start_table_ptr += table_size_in_words; + + /* check if we reached the end of floa tables area */ + if ((unsigned long)start_table_ptr >= flow_dma_area_end_addr) + error = -1; + else + *table_address_ptr = start_table_ptr; + + return error; +} + +/* + this function goes over all the flow tables connected to the given + table and deallocate them +*/ +static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr) +{ + /* id poiner */ + unsigned long *table_ptr; + + /* end address of the flow dma area */ + unsigned long num_entries; + + unsigned long num_pages; + + /* pages ptr */ + struct page **pages_ptr; + + /* maximum table size in words */ + struct sep_lli_entry_t *info_entry_ptr; + + /*------------------------------- + CODE + ---------------------------------*/ + + /* set the pointer to the first table */ + table_ptr = (unsigned long *)first_table_ptr->physical_address; + + /* set the num of entries */ + num_entries = (first_table_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) + & SEP_NUM_ENTRIES_MASK; + + /* go over all the connected tables */ + while (*table_ptr != 0xffffffff) { + /* get number of pages */ + num_pages = *(table_ptr - 2); + + /* get the pointer to the pages */ + pages_ptr = (struct page **)(*(table_ptr - 1)); + + /* free the pages */ + sep_free_dma_pages(pages_ptr, num_pages, 1); + + /* goto to the info entry */ + info_entry_ptr = ((struct sep_lli_entry_t *)table_ptr) + + (num_entries - 1); + + table_ptr = (unsigned long *)info_entry_ptr->physical_address; + num_entries = (info_entry_ptr->block_size >> + SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; + } + + return; +} + +/* + This function handler the set flow id command +*/ +static int sep_set_flow_id_handler(unsigned long arg) +{ + /* error */ + int error; + + /* flow _id */ + unsigned long flow_id; + + /* pointer to flow data structre */ + struct sep_flow_context_t *flow_data_ptr; + + /*---------------------- + CODE + -----------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "------------>SEP Driver: sep_set_flow_id_handler start\n"); + + error = get_user(flow_id, + &(((struct sep_driver_set_flow_id_t *)arg)->flow_id)); + if (error) + goto end_function; + + /* find the flow data structure that was just used for creating new flow + - its id should be default */ + error = sep_find_flow_context(SEP_TEMP_FLOW_ID, &flow_data_ptr); + if (error) + goto end_function; + + /* set flow id */ + flow_data_ptr->flow_id = flow_id; + +end_function: + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_set_flow_id_handler end\n"); + + + return error; +} + + +/* + calculates time and sets it at the predefined address +*/ +static int sep_set_time(unsigned long *address_ptr, + unsigned long *time_in_sec_ptr) +{ + /* time struct */ + struct timeval time; + + /* address of time in the kernel */ + unsigned long time_addr; + + + /*------------------------ + CODE + --------------------------*/ + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:--------> sep_set_time start\n"); + + + do_gettimeofday(&time); + + /* set value in the SYSTEM MEMORY offset */ + time_addr = g_message_shared_area_addr + + SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES; + + *(unsigned long *)time_addr = SEP_TIME_VAL_TOKEN; + *(unsigned long *)(time_addr + 4) = time.tv_sec; + + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:time.tv_sec is %lu\n", + time.tv_sec); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:time_addr is %lu\n", + time_addr); + DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, + "SEP Driver:g_message_shared_area_addr is %lu\n", + g_message_shared_area_addr); + + /* set the output parameters if needed */ + if (address_ptr) + *address_ptr = sep_shared_area_virt_to_phys(time_addr); + + if (time_in_sec_ptr) + *time_in_sec_ptr = time.tv_sec; + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_set_time end\n"); + + return 0; +} + +/* + PATCH for configuring the DMA to single burst instead of multi-burst +*/ +static void sep_configure_dma_burst(void) +{ + +#define HW_AHB_RD_WR_BURSTS_REG_ADDR 0x0E10UL + + unsigned long regVal; + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_configure_dma_burst start \n"); + + /* request access to registers from SEP */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + + HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2UL); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n"); + + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_BUSY_REG_ADDR, regVal); + while (regVal) + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_BUSY_REG_ADDR, regVal); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (while(revVal) wait loop) \n"); + + /* set the DMA burst register to single burst*/ + SEP_WRITE_REGISTER(g_sep_reg_base_address + + HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL); + + /* release the sep busy */ + SEP_WRITE_REGISTER(g_sep_reg_base_address + + HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL); + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_BUSY_REG_ADDR, regVal); + while (regVal != 0x0) + SEP_READ_REGISTER(g_sep_reg_base_address + + HW_HOST_SEP_BUSY_REG_ADDR, regVal); + + DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, + "SEP Driver:<-------- sep_configure_dma_burst done \n"); + +} + +module_init(sep_init); +module_exit(sep_exit); + +MODULE_LICENSE("GPL"); |
