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| author | Mark Allyn <mark.a.allyn@intel.com> | 2009-08-06 20:43:59 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-15 12:02:11 -0700 |
| commit | cd1bb431d8b183e2d063267419984cc9bbe22b0b (patch) | |
| tree | 4d425dd0408f4ac11f071dbdcc654d9eb7e66438 | |
| parent | 249c033c29ed4eccd24b52959747f2663deaa02f (diff) | |
| download | linux-3.10-cd1bb431d8b183e2d063267419984cc9bbe22b0b.tar.gz linux-3.10-cd1bb431d8b183e2d063267419984cc9bbe22b0b.tar.bz2 linux-3.10-cd1bb431d8b183e2d063267419984cc9bbe22b0b.zip | |
Staging: sep: Upstream revision 3 of the security processor kernel driver
Upstream revision 3 of the security processor kernel driver;
now located in drivers/staging
This revision adds an initial TODO file
This driver no longer requires to have the firmware compiled in
it with the CONFIG_EXTRA_FIRMWARE configuration option.
Furthermore, we now have the right to distribute the firmware
binaries.
This is the Linux kernel driver for the Security Processor, which is
a hardware device the provides cryptographic, secure storage, and
key management services.
Please be aware that this patch does not contain any encryption
algorithm. It only transports data to and from user space
applications to the security processor.
Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/staging/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/staging/Makefile | 1 | ||||
| -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 |
11 files changed, 5769 insertions, 0 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 979de8fb32c..2860bd5704f 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -135,5 +135,7 @@ source "drivers/staging/hv/Kconfig" source "drivers/staging/vme/Kconfig" +source "drivers/staging/sep/Kconfig" + endif # !STAGING_EXCLUDE_BUILD endif # STAGING diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index c80d05006dc..ce6523c02f9 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -49,3 +49,4 @@ obj-$(CONFIG_USB_CPC) += cpc-usb/ obj-$(CONFIG_FB_UDL) += udlfb/ obj-$(CONFIG_HYPERV) += hv/ obj-$(CONFIG_VME_BUS) += vme/ +obj-$(CONFIG_DX_SEP) += sep/ diff --git a/drivers/staging/sep/Kconfig b/drivers/staging/sep/Kconfig new file mode 100644 index 00000000000..1a4514d3a7a --- /dev/null +++ b/drivers/staging/sep/Kconfig @@ -0,0 +1,9 @@ +config DX_SEP + tristate "Discretix SEP driver" + depends on MRST + default y + help + Discretix SEP driver + + If unsure say M. The compiled module will be + called sep_driver.ko diff --git a/drivers/staging/sep/Makefile b/drivers/staging/sep/Makefile new file mode 100644 index 00000000000..e2528e80e28 --- /dev/null +++ b/drivers/staging/sep/Makefile @@ -0,0 +1,3 @@ +EXTRA_CFLAGS += -DLITTLE__ENDIAN -DDX_CC5_SEP_PLAT -DCRYS_NO_EXT_IF_MODE_SUPPORT +obj-$(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 00000000000..ff0e931dab6 --- /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 00000000000..6a3be5dbfff --- /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 00000000000..a796c4970a0 --- /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 00000000000..3bc3b4de99c --- /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 00000000000..df831be2645 --- /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 00000000000..9fb1dd0129a --- /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 00000000000..158c462135b --- /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"); |