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
+
--- /dev/null
+/*
+ *
+ * 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 <linux/pci.h>
+#include <linux/firmware.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"
+#include "sep_dev.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
+
+/*
+ * THESE 2 definitions are specific to the board - must be
+ * defined during integration
+ */
+#define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0xFF0D0000
+
+/* 2M size */
+
+void sep_load_rom_code(void)
+{
+ /* 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);
+
+ edbg("SEP Driver: DX_CC_TST_SepRomLoader start\n");
+
+ edbg("SEP Driver: k is %lu\n", k);
+ edbg("SEP Driver: sep_dev->reg_base_address is %p\n", sep_dev->reg_base_address);
+ edbg("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_reg(sep_dev, SEP_ROM_BANK_register_offset, i);
+
+ for (j = 0; j < CRYS_SEP_ROM_length / 4; j++) {
+ sep_write_reg(sep_dev, 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_reg(sep_dev, HW_HOST_SEP_SW_RST_REG_ADDR, 0x1);
+
+ /* poll for SEP ROM boot finish */
+ do {
+ retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+ } while (!regVal);
+
+ edbg("SEP Driver: ROM polling ended\n");
+
+ switch (regVal) {
+ case 0x1:
+ /* fatal error - read erro status from GPRO */
+ Error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ edbg("SEP Driver: ROM polling case 1\n");
+ break;
+ case 0x2:
+ /* Boot First Phase ended */
+ warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ edbg("SEP Driver: ROM polling case 2\n");
+ break;
+ case 0x4:
+ /* Cold boot ended successfully */
+ warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ edbg("SEP Driver: ROM polling case 4\n");
+ Error = 0;
+ break;
+ case 0x8:
+ /* Warmboot ended successfully */
+ warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ edbg("SEP Driver: ROM polling case 8\n");
+ Error = 0;
+ break;
+ case 0x10:
+ /* ColdWarm boot ended successfully */
+ warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ edbg("SEP Driver: ROM polling case 16\n");
+ Error = 0;
+ break;
+ case 0x20:
+ edbg("SEP Driver: ROM polling case 32\n");
+ break;
+ }
+
+}
+
+#else
+void sep_load_rom_code(void) { }
+#endif /* SEP_DRIVER_ARM_DEBUG_MODE */
+
+
+
+/*----------------------------------------
+ DEFINES
+-----------------------------------------*/
+
+#define INT_MODULE_PARM(n, v) int n = v; module_param(n, int, 0)
+#define BASE_ADDRESS_FOR_SYSTEM 0xfffc0000
+#define SEP_RAR_IO_MEM_REGION_SIZE 0x40000
+
+/*--------------------------------------------
+ GLOBAL variables
+--------------------------------------------*/
+
+/* debug messages level */
+INT_MODULE_PARM(sepDebug, 0x0);
+MODULE_PARM_DESC(sepDebug, "Flag to enable SEP debug messages");
+
+/* Keep this a single static object for now to keep the conversion easy */
+
+static struct sep_device sep_instance;
+struct sep_device *sep_dev = &sep_instance;
+
+/* temporary */
+unsigned long jiffies_future;
+
+
+/*
+ mutex for the access to the internals of the sep driver
+*/
+static DEFINE_MUTEX(sep_mutex);
+
+
+/* wait queue head (event) of the driver */
+static DECLARE_WAIT_QUEUE_HEAD(g_sep_event);
+
+
+
+/*------------------------------------------------
+ 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 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)
+{
+ unsigned long resident_addr;
+ 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;
+
+ edbg("SEP Driver:rar_virtual is %p\n", sep_dev->rar_virtual_address);
+ edbg("SEP Driver:rar_physical is %08lx\n", sep_dev->rar_physical_address);
+
+ sep_dev->rar_region_addr = (unsigned long) sep_dev->rar_virtual_address;
+
+ sep_dev->cache_physical_address = sep_dev->rar_physical_address;
+ sep_dev->cache_virtual_address = sep_dev->rar_virtual_address;
+
+ /* load cache */
+ error = request_firmware(&fw, cache_name, &sep_dev->sep_pci_dev_ptr->dev);
+ if (error) {
+ edbg("SEP Driver:cant request cache fw\n");
+ goto end_function;
+ }
+
+ edbg("SEP Driver:cache data loc is %p\n", (void *) fw->data);
+ edbg("SEP Driver:cache data size is %08Zx\n", fw->size);
+
+ memcpy((void *) sep_dev->cache_virtual_address, (void *) fw->data, fw->size);
+
+ sep_dev->cache_size = fw->size;
+
+ cache_addr = (unsigned long) sep_dev->cache_virtual_address;
+
+ release_firmware(fw);
+
+ sep_dev->resident_physical_address = sep_dev->cache_physical_address + sep_dev->cache_size;
+ sep_dev->resident_virtual_address = sep_dev->cache_virtual_address + sep_dev->cache_size;
+
+ /* load resident */
+ error = request_firmware(&fw, res_name, &sep_dev->sep_pci_dev_ptr->dev);
+ if (error) {
+ edbg("SEP Driver:cant request res fw\n");
+ goto end_function;
+ }
+
+ edbg("SEP Driver:res data loc is %p\n", (void *) fw->data);
+ edbg("SEP Driver:res data size is %08Zx\n", fw->size);
+
+ memcpy((void *) sep_dev->resident_virtual_address, (void *) fw->data, fw->size);
+
+ sep_dev->resident_size = fw->size;
+
+ release_firmware(fw);
+
+ resident_addr = (unsigned long) sep_dev->resident_virtual_address;
+
+ edbg("SEP Driver:resident_addr (physical )is %08lx\n", sep_dev->resident_physical_address);
+ edbg("SEP Driver:cache_addr (physical) is %08lx\n", sep_dev->cache_physical_address);
+
+ edbg("SEP Driver:resident_addr (logical )is %08lx\n", resident_addr);
+ edbg("SEP Driver:cache_addr (logical) is %08lx\n", cache_addr);
+
+ edbg("SEP Driver:resident_size is %08lx\n", sep_dev->resident_size);
+ edbg("SEP Driver:cache_size is %08lx\n", sep_dev->cache_size);
+
+
+
+ /* physical addresses */
+ *dst_new_cache_addr_ptr = sep_dev->cache_physical_address;
+ *dst_new_resident_addr_ptr = sep_dev->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);
+ sep_dev->shared_virtual_address = kmalloc(shared_area_size, GFP_KERNEL);
+ if (!sep_dev->shared_virtual_address) {
+ edbg("sep_driver:shared memory kmalloc failed\n");
+ return -1;
+ }
+ /* FIXME */
+ sep_dev->shared_physical_address = __pa(sep_dev->shared_virtual_address);
+ /* shared_physical_address = 0xda00000; */
+ *kernel_shared_area_addr_ptr = (unsigned long) sep_dev->shared_virtual_address;
+ /* set the physical address of the shared area */
+ *phys_shared_area_addr_ptr = sep_dev->shared_physical_address;
+ edbg("SEP Driver:shared_virtual_address is %p\n", sep_dev->shared_virtual_address);
+ edbg("SEP Driver:shared_region_size is %08lx\n", shared_area_size);
+ edbg("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);
+}
+
+/*
+ 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)
+{
+ edbg("SEP Driver:sh virt to phys v %08lx\n", virt_address);
+ edbg("SEP Driver:sh virt to phys p %08lx\n", sep_dev->shared_physical_address + (virt_address - (unsigned long) sep_dev->shared_virtual_address));
+
+ return (unsigned long) sep_dev->shared_physical_address + (virt_address - (unsigned long) sep_dev->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) sep_dev->shared_virtual_address + (phys_address - sep_dev->shared_physical_address);
+}
+
+
+/*
+ this function returns the address of the message shared area
+*/
+void sep_map_shared_area(unsigned long *mappedAddr_ptr)
+{
+ *mappedAddr_ptr = sep_dev->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_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF))
+ retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
+
+ sep_dev->sep_to_host_reply_counter++;
+#else
+ /* poll, until reply from sep */
+ wait_event(g_sep_event, (sep_dev->host_to_sep_send_counter == sep_dev->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)
+{
+ int error;
+
+ dbg("SEP Driver:--------> open start\n");
+
+ error = 0;
+
+ /* check the blocking mode */
+ if (sep_dev->block_mode_flag)
+ /* lock mutex */
+ mutex_lock(&sep_mutex);
+ else
+ error = mutex_trylock(&sep_mutex);
+
+ /* check the error */
+ if (error) {
+ edbg("SEP Driver: down_interruptible failed\n");
+
+ goto end_function;
+ }
+
+ /* release data pool allocations */
+ sep_dev->data_pool_bytes_allocated = 0;
+
+end_function:
+ dbg("SEP Driver:<-------- open end\n");
+ return error;
+}
+
+
+
+
+/*------------------------------------------------------------
+ release function
+-------------------------------------------------------------*/
+static int sep_release(struct inode *inode_ptr, struct file *file_ptr)
+{
+ dbg("----------->SEP Driver: sep_release start\n");
+
+#if 0 /*!SEP_DRIVER_POLLING_MODE */
+ /* close IMR */
+ sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF);
+
+ /* release IRQ line */
+ free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address);
+
+#endif
+
+ /* unlock the sep mutex */
+ mutex_unlock(&sep_mutex);
+
+ dbg("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)
+{
+ unsigned long phys_addr;
+
+ dbg("-------->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) {
+ edbg("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;
+ }
+
+ edbg("SEP Driver:g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr);
+
+ /* get physical address */
+ phys_addr = sep_dev->phys_shared_area_addr;
+
+ edbg("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)) {
+ edbg("SEP Driver remap_page_range failed\n");
+ printk(KERN_WARNING "SEP Driver remap_page_range failed\n");
+ return -EAGAIN;
+ }
+
+ dbg("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;
+ unsigned long retVal = 0; /* flow id */
+
+ dbg("---------->SEP Driver poll: start\n");
+
+
+#if SEP_DRIVER_POLLING_MODE
+
+ while (sep_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) {
+ retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
+
+ for (count = 0; count < 10 * 4; count += 4)
+ edbg("Poll Debug Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + count)));
+ }
+
+ sep_dev->sep_to_host_reply_counter++;
+#else
+ /* add the event to the polling wait table */
+ poll_wait(filp, &g_sep_event, wait);
+
+#endif
+
+ edbg("sep_dev->host_to_sep_send_counter is %lu\n", sep_dev->host_to_sep_send_counter);
+ edbg("sep_dev->sep_to_host_reply_counter is %lu\n", sep_dev->sep_to_host_reply_counter);
+
+ /* check if the data is ready */
+ if (sep_dev->host_to_sep_send_counter == sep_dev->sep_to_host_reply_counter) {
+ for (count = 0; count < 12 * 4; count += 4)
+ edbg("Sep Mesg Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count)));
+
+ for (count = 0; count < 10 * 4; count += 4)
+ edbg("Debug Data Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + 0x1800 + count)));
+
+ retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
+ edbg("retVal is %lu\n", retVal);
+ /* check if the this is sep reply or request */
+ if (retVal >> 31) {
+ edbg("SEP Driver: sep request in\n");
+ /* request */
+ mask |= POLLOUT | POLLWRNORM;
+ } else {
+ edbg("SEP Driver: sep reply in\n");
+ mask |= POLLIN | POLLRDNORM;
+ }
+ }
+ dbg("SEP Driver:<-------- poll exit\n");
+ return mask;
+}
+
+
+static int sep_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ int error = 0;
+
+ dbg("------------>SEP Driver: ioctl start\n");
+
+ edbg("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();
+ edbg("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;
+ }
+ dbg("SEP Driver:<-------- ioctl end\n");
+ return error;
+}
+
+
+
+/*
+ interrupt handler function
+*/
+irqreturn_t sep_inthandler(int irq, void *dev_id)
+{
+ irqreturn_t int_error;
+ unsigned long error;
+ unsigned long reg_val;
+ unsigned long flow_id;
+ struct sep_flow_context_t *flow_context_ptr;
+
+ int_error = IRQ_HANDLED;
+
+ /* read the IRR register to check if this is SEP interrupt */
+ reg_val = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR);
+ edbg("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 */
+ flow_id = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR);
+
+ /* 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(sep_dev->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_dev->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_reg(sep_dev, 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;
+ unsigned long result;
+
+ dbg("SEP Driver:--------> sep_prepare_input_dma_table start\n");
+
+ edbg("SEP Driver:data_size is %lu\n", data_size);
+ edbg("SEP Driver:block_size is %lu\n", block_size);
+
+ /* initialize the pages pointers */
+ sep_dev->in_page_array = 0;
+ sep_dev->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 *) (sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES);
+ in_lli_table_ptr->physical_address = sep_dev->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 = sep_dev->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_dev->in_num_pages, &lli_array_ptr, &sep_dev->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_dev->in_num_pages, &lli_array_ptr, &sep_dev->in_page_array);
+
+ if (result)
+ return result;
+
+ edbg("SEP Driver:output sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages);
+
+ current_entry = 0;
+ info_entry_ptr = 0;
+ sep_lli_entries = sep_dev->in_num_pages;
+
+ /* initiate to point after the message area */
+ lli_table_alloc_addr = sep_dev->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;
+
+ edbg("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;
+
+ edbg("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:
+ dbg("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;
+ int result = 0;
+
+ dbg("SEP Driver:--------> sep_prepare_input_output_dma_table start\n");
+
+ /* initialize the pages pointers */
+ sep_dev->in_page_array = 0;
+ sep_dev->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_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array);
+ if (result) {
+ edbg("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_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array);
+ if (result) {
+ edbg("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_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array);
+ if (result) {
+ edbg("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_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array);
+ if (result) {
+ edbg("SEP Driver: sep_lock_user_pages for output virtual buffer failed\n");
+ goto end_function_with_error1;
+ }
+ }
+ edbg("sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages);
+ edbg("sep_dev->out_num_pages is %lu\n", sep_dev->out_num_pages);
+ edbg("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_dev->in_num_pages, lli_out_array, sep_dev->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) {
+ edbg("SEP Driver: sep_construct_dma_tables_from_lli failed\n");
+ goto end_function_with_error2;
+ }
+
+ /* fall through - free the lli entry arrays */
+ dbg("in_num_entries_ptr is %08lx\n", *in_num_entries_ptr);
+ dbg("out_num_entries_ptr is %08lx\n", *out_num_entries_ptr);
+ dbg("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:
+ dbg("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;
+
+ dbg("SEP Driver:--------> sep_construct_dma_tables_from_lli start\n");
+
+ /* initiate to pint after the message area */
+ lli_table_alloc_addr = sep_dev->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));
+
+ edbg("SEP Driver:in_table_data_size is %lu\n", in_table_data_size);
+ edbg("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;
+
+ dbg("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;
+
+ edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr);
+ edbg("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;
+
+ edbg("SEP Driver:output num_entries_out_table is %lu\n", (unsigned long) num_entries_out_table);
+ edbg("SEP Driver:output info_in_entry_ptr is %lu\n", (unsigned long) info_in_entry_ptr);
+ edbg("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);
+ dbg("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)
+{
+ unsigned long table_data_size = 0;
+ unsigned long counter;
+
+ /* 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)
+{
+ unsigned long curr_table_data_size;
+ /* counter of lli array entry */
+ unsigned long array_counter;
+
+ dbg("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;
+
+ edbg("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;
+
+ edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr);
+ edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address);
+ edbg("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) {
+ edbg("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++;
+
+ edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address);
+ edbg("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;
+
+ edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr);
+ edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address);
+ edbg("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;
+
+ edbg("SEP Driver:*num_processed_entries_ptr is %lu\n", *num_processed_entries_ptr);
+ dbg("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;
+
+ dbg("SEP Driver:--------> sep_debug_print_lli_tables start\n");
+
+ table_count = 1;
+ while ((unsigned long) lli_table_ptr != 0xffffffff) {
+ edbg("SEP Driver: lli table %08lx, table_data_size is %lu\n", table_count, table_data_size);
+ edbg("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++) {
+ edbg("SEP Driver:lli_table_ptr address is %08lx\n", (unsigned long) lli_table_ptr);
+ edbg("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--;
+
+ edbg("SEP Driver:phys lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size);
+ edbg("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);
+
+ edbg("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++;
+ }
+ dbg("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)
+{
+ int error = 0;
+ /* 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;
+ struct page **page_array;
+ struct sep_lli_entry_t *lli_array;
+ unsigned long count;
+ int result;
+
+ dbg("SEP Driver:--------> sep_lock_user_pages start\n");
+
+ /* 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;
+
+ edbg("SEP Driver: app_virt_addr is %08lx\n", app_virt_addr);
+ edbg("SEP Driver: data_size is %lu\n", data_size);
+ edbg("SEP Driver: start_page is %lu\n", start_page);
+ edbg("SEP Driver: end_page is %lu\n", end_page);
+ edbg("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) {
+ edbg("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) {
+ edbg("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) {
+ dbg("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 */
+ dbg("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;
+
+ edbg("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) {
+ dbg("app_virt_addr is %08lx\n", app_virt_addr);
+ dbg("data_size is %lu\n", data_size);
+ while (1);
+ }
+ edbg("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]);
+ kfree(lli_array);
+end_function_with_error1:
+ kfree(page_array);
+end_function:
+ dbg("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)
+{
+ int error = 0;
+ /* 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;
+ struct sep_lli_entry_t *lli_array;
+ /* next kernel address to map */
+ unsigned long next_kernel_address;
+ unsigned long count;
+
+ dbg("SEP Driver:--------> sep_lock_kernel_pages start\n");
+
+ /* 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;
+
+ edbg("SEP Driver: kernel_virt_addr is %08lx\n", kernel_virt_addr);
+ edbg("SEP Driver: data_size is %lu\n", data_size);
+ edbg("SEP Driver: start_page is %lx\n", start_page);
+ edbg("SEP Driver: end_page is %lx\n", end_page);
+ edbg("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) {
+ edbg("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 */
+ dbg("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;
+
+ edbg("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) {
+ dbg("app_virt_addr is %08lx\n", kernel_virt_addr);
+ dbg("data_size is %lu\n", data_size);
+ while (1);
+ }
+
+ edbg("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:
+ dbg("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)
+{
+ unsigned long count;
+
+ 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;
+
+ dbg("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)
+ edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count)));
+
+ /* update counter */
+ sep_dev->host_to_sep_send_counter++;
+ /* send interrupt to SEP */
+ sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2);
+ dbg("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;
+
+ dbg("SEP Driver:--------> sep_send_reply_command_handler start\n");
+
+ /* flash cache */
+ flush_cache_all();
+ for (count = 0; count < 12 * 4; count += 4)
+ edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count)));
+ /* update counter */
+ sep_dev->host_to_sep_send_counter++;
+ /* send the interrupt to SEP */
+ sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep_dev->host_to_sep_send_counter);
+ /* update both counters */
+ sep_dev->host_to_sep_send_counter++;
+ sep_dev->sep_to_host_reply_counter++;
+ dbg("SEP Driver:<-------- sep_send_reply_command_handler end\n");
+}
+
+
+
+/*
+ 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)
+{
+ int error;
+ struct sep_driver_alloc_t command_args;
+
+ dbg("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_dev->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_dev->data_pool_bytes_allocated;
+ command_args.phys_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep_dev->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_dev->data_pool_bytes_allocated += command_args.num_bytes;
+
+end_function:
+ dbg("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)
+{
+ int error;
+ unsigned long virt_address;
+ unsigned long app_in_address;
+ unsigned long num_bytes;
+ unsigned long data_pool_area_addr;
+
+ dbg("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 = sep_dev->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:
+ dbg("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)
+{
+ int error;
+ /* virtual address of dest application buffer */
+ unsigned long app_out_address;
+ /* virtual address of the data pool */
+ unsigned long virt_address;
+ unsigned long num_bytes;
+ unsigned long data_pool_area_addr;
+
+ dbg("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 = sep_dev->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:
+ dbg("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)
+{
+ int error;
+ /* command arguments */
+ struct sep_driver_build_sync_table_t command_args;
+
+ dbg("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;
+
+ edbg("app_in_address is %08lx\n", command_args.app_in_address);
+ edbg("app_out_address is %08lx\n", command_args.app_out_address);
+ edbg("data_size is %lu\n", command_args.data_in_size);
+ edbg("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:
+ dbg("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()
+{
+ dbg("SEP Driver:--------> sep_free_dma_table_data_handler start\n");
+
+ /* free input pages array */
+ sep_free_dma_pages(sep_dev->in_page_array, sep_dev->in_num_pages, 0);
+
+ /* free output pages array if needed */
+ if (sep_dev->out_page_array)
+ sep_free_dma_pages(sep_dev->out_page_array, sep_dev->out_num_pages, 1);
+
+ /* reset all the values */
+ sep_dev->in_page_array = 0;
+ sep_dev->out_page_array = 0;
+ sep_dev->in_num_pages = 0;
+ sep_dev->out_num_pages = 0;
+ dbg("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)
+{
+ int error;
+ 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;
+
+ dbg("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:
+ dbg("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)
+{
+ int error;
+ unsigned long num_entries;
+ struct sep_driver_add_flow_table_t command_args;
+ 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;
+
+ dbg("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));
+end_function_with_error:
+ /* free the allocated tables */
+ sep_deallocated_flow_tables(&first_table_data);
+end_function:
+ dbg("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)
+{
+ int error;
+ struct sep_driver_add_message_t command_args;
+ struct sep_flow_context_t *flow_context_ptr;
+
+ dbg("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:
+ dbg("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)
+{
+ int error;
+ struct sep_driver_static_pool_addr_t command_args;
+
+ dbg("SEP Driver:--------> sep_get_static_pool_addr_handler start\n");
+
+ /*prepare the output parameters in the struct */
+ command_args.physical_static_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES;
+ command_args.virtual_static_address = sep_dev->shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES;
+
+ edbg("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));
+ dbg("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)
+{
+ int error;
+ struct sep_driver_get_mapped_offset_t command_args;
+
+ dbg("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 < sep_dev->phys_shared_area_addr) {
+ error = -ENOTTY;
+ goto end_function;
+ }
+
+ /*prepare the output parameters in the struct */
+ command_args.offset = command_args.physical_address - sep_dev->phys_shared_area_addr;
+
+ edbg("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));
+end_function:
+ dbg("SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n");
+ return error;
+}
+
+
+/*
+ ?
+*/
+static int sep_start_handler(void)
+{
+ unsigned long reg_val;
+ unsigned long error = 0;
+
+ dbg("SEP Driver:--------> sep_start_handler start\n");
+
+ /* wait in polling for message from SEP */
+ do
+ reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+ while (!reg_val);
+
+ /* check the value */
+ if (reg_val == 0x1)
+ /* fatal error - read erro status from GPRO */
+ error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ dbg("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)
+{
+ unsigned long message_word;
+ unsigned long *message_ptr;
+ struct sep_driver_init_t command_args;
+ unsigned long counter;
+ unsigned long error;
+ unsigned long reg_val;
+
+ dbg("SEP Driver:--------> sep_init_handler start\n");
+ error = 0;
+
+ error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_init_t));
+
+ dbg("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(); */
+
+ dbg("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_reg(sep_dev, 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_reg(sep_dev, HW_SRAM_DATA_REG_ADDR, message_word);
+ edbg("SEP Driver:message_word is %lu\n", message_word);
+ /* wait for write complete */
+ sep_wait_sram_write(sep_dev);
+ }
+ dbg("SEP Driver:--------> sep_init_handler - finished getting messages from user space\n");
+ /* signal SEP */
+ sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1);
+
+ do
+ reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
+ while (!(reg_val & 0xFFFFFFFD));
+
+ dbg("SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n");
+
+ /* check the value */
+ if (reg_val == 0x1) {
+ edbg("SEP Driver:init failed\n");
+
+ error = sep_read_reg(sep_dev, 0x8060);
+ edbg("SEP Driver:sw monitor is %lu\n", error);
+
+ /* fatal error - read erro status from GPRO */
+ error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
+ edbg("SEP Driver:error is %lu\n", error);
+ }
+end_function:
+ dbg("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)
+{
+ int error;
+ unsigned long phys_cache_address;
+ unsigned long phys_resident_address;
+ struct sep_driver_realloc_cache_resident_t command_args;
+
+ /* 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 = sep_dev->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 = sep_dev->phys_shared_area_addr;
+
+ edbg("SEP Driver:command_args.new_shared_area_addr is %08lx\n", command_args.new_shared_area_addr);
+ edbg("SEP Driver:command_args.new_base_addr is %08lx\n", command_args.new_base_addr);
+ edbg("SEP Driver:command_args.new_resident_addr is %08lx\n", command_args.new_resident_addr);
+ edbg("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)
+{
+ int error;
+ struct sep_driver_get_time_t command_args;
+
+ error = sep_set_time(&command_args.time_physical_address, &command_args.time_value);
+ 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)
+{
+ int error;
+ unsigned long mode_flag;
+
+ dbg("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 */
+ sep_dev->block_mode_flag = mode_flag;
+end_function:
+ dbg("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)
+{
+ dbg("SEP Driver:--------> sep_end_transaction_handler start\n");
+
+#if 0 /*!SEP_DRIVER_POLLING_MODE */
+ /* close IMR */
+ sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF);
+
+ /* release IRQ line */
+ free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address);
+
+ /* lock the sep mutex */
+ mutex_unlock(&sep_mutex);
+#endif
+
+ dbg("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)
+{
+ struct sep_flow_context_t *flow_data_ptr;
+
+ /* 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 *) sep_dev->shared_area_addr, flow_data_ptr->message_size_in_bytes);
+
+ sep_write_reg(sep_dev, 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)
+{
+ int error;
+ 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_lli_entry_t *prev_info_entry_ptr;
+ unsigned long i;
+
+ /* 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)
+{
+ int error;
+ /* the range in pages */
+ unsigned long lli_array_size;
+ struct sep_lli_entry_t *lli_array;
+ struct sep_lli_entry_t *flow_dma_table_entry_ptr;
+ unsigned long *start_dma_table_ptr;
+ /* total table data counter */
+ unsigned long dma_table_data_count;
+ /* pointer that will keep the pointer to the pages of the virtual buffer */
+ struct page **page_array_ptr;
+ unsigned long entry_count;
+
+ /* 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 contains the given id
+*/
+static int sep_find_flow_context(unsigned long flow_id, struct sep_flow_context_t **flow_data_ptr)
+{
+ unsigned long count;
+ int 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 (sep_dev->flows_data_array[count].flow_id == flow_id) {
+ *flow_data_ptr = &sep_dev->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)
+{
+ int error = 0;
+ /* pointer to the id field of the flow dma table */
+ unsigned long *start_table_ptr;
+ unsigned long flow_dma_area_start_addr;
+ unsigned long flow_dma_area_end_addr;
+ /* maximum table size in words */
+ unsigned long table_size_in_words;
+
+ /* find the start address of the flow DMA table area */
+ flow_dma_area_start_addr = sep_dev->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 pointer */
+ unsigned long *table_ptr;
+ /* end address of the flow dma area */
+ unsigned long num_entries;
+ unsigned long num_pages;
+ struct page **pages_ptr;
+ /* maximum table size in words */
+ struct sep_lli_entry_t *info_entry_ptr;
+
+ /* 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)
+{
+ int error;
+ unsigned long flow_id;
+ struct sep_flow_context_t *flow_data_ptr;
+
+ dbg("------------>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:
+ dbg("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)
+{
+ struct timeval time;
+ /* address of time in the kernel */
+ unsigned long time_addr;
+
+
+ dbg("SEP Driver:--------> sep_set_time start\n");
+
+ do_gettimeofday(&time);
+
+ /* set value in the SYSTEM MEMORY offset */
+ time_addr = sep_dev->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;
+
+ edbg("SEP Driver:time.tv_sec is %lu\n", time.tv_sec);
+ edbg("SEP Driver:time_addr is %lu\n", time_addr);
+ edbg("SEP Driver:g_message_shared_area_addr is %lu\n", sep_dev->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;
+
+ dbg("SEP Driver:<-------- sep_set_time end\n");
+
+ return 0;
+}
+
+static void sep_wait_busy(struct sep_device *dev)
+{
+ u32 reg;
+
+ do {
+ reg = sep_read_reg(sep_dev, HW_HOST_SEP_BUSY_REG_ADDR);
+ } while (reg);
+}
+
+/*
+ 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
+
+ dbg("SEP Driver:<-------- sep_configure_dma_burst start \n");
+
+ /* request access to registers from SEP */
+ sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2);
+
+ dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n");
+
+ sep_wait_busy(sep_dev);
+
+ dbg("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_reg(sep_dev, HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL);
+
+ /* release the sep busy */
+ sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL);
+ sep_wait_busy(sep_dev);
+
+ dbg("SEP Driver:<-------- sep_configure_dma_burst done \n");
+
+}
+
+/*
+ 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)
+{
+ int error = 0;
+
+ edbg("Sep pci probe starting\n");
+
+ /* enable the device */
+ error = pci_enable_device(pdev);
+ if (error) {
+ edbg("error enabling pci device\n");
+ goto end_function;
+ }
+
+ /* set the pci dev pointer */
+ sep_dev->sep_pci_dev_ptr = pdev;
+
+ /* get the io memory start address */
+ sep_dev->io_memory_start_physical_address = pci_resource_start(pdev, 0);
+ if (!sep_dev->io_memory_start_physical_address) {
+ edbg("SEP Driver error pci resource start\n");
+ goto end_function;
+ }
+
+ /* get the io memory end address */
+ sep_dev->io_memory_end_physical_address = pci_resource_end(pdev, 0);
+ if (!sep_dev->io_memory_end_physical_address) {
+ edbg("SEP Driver error pci resource end\n");
+ goto end_function;
+ }
+
+ sep_dev->io_memory_size = sep_dev->io_memory_end_physical_address - sep_dev->io_memory_start_physical_address + 1;
+
+ edbg("SEP Driver:io_memory_start_physical_address is %08lx\n", sep_dev->io_memory_start_physical_address);
+
+ edbg("SEP Driver:io_memory_end_phyaical_address is %08lx\n", sep_dev->io_memory_end_physical_address);
+
+ edbg("SEP Driver:io_memory_size is %08lx\n", sep_dev->io_memory_size);
+
+ sep_dev->io_memory_start_virtual_address = ioremap_nocache(sep_dev->io_memory_start_physical_address, sep_dev->io_memory_size);
+ if (!sep_dev->io_memory_start_virtual_address) {
+ edbg("SEP Driver error ioremap of io memory\n");
+ goto end_function;
+ }
+
+ edbg("SEP Driver:io_memory_start_virtual_address is %p\n", sep_dev->io_memory_start_virtual_address);
+
+ sep_dev->reg_base_address = (void __iomem *) sep_dev->io_memory_start_virtual_address;
+
+
+ /* set up system base address and shared memory location */
+
+ sep_dev->rar_virtual_address = kmalloc(2 * SEP_RAR_IO_MEM_REGION_SIZE, GFP_KERNEL);
+
+ if (!sep_dev->rar_virtual_address) {
+ edbg("SEP Driver:cant kmalloc rar\n");
+ goto end_function;
+ }
+ /* FIXME */
+ sep_dev->rar_physical_address = __pa(sep_dev->rar_virtual_address);
+
+ edbg("SEP Driver:rar_physical is %08lx\n", sep_dev->rar_physical_address);
+ edbg("SEP Driver:rar_virtual is %p\n", sep_dev->rar_virtual_address);
+
+#if !SEP_DRIVER_POLLING_MODE
+
+ edbg("SEP Driver: about to write IMR and ICR REG_ADDR\n");
+
+ /* clear ICR register */
+ sep_write_reg(sep_dev, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF);
+
+ /* set the IMR register - open only GPR 2 */
+ sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13)));
+
+ /* figure out our irq */
+ /* FIXME: */
+ error = pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, (u8 *) & sep_dev->sep_irq);
+
+ edbg("SEP Driver: my irq is %d\n", sep_irq);
+
+ edbg("SEP Driver: about to call request_irq\n");
+ /* get the interrupt line */
+ error = request_irq(sep_irq, sep_inthandler, IRQF_SHARED, "sep_driver", &sep_dev->reg_base_address);
+ if (error)
+ goto end_function;
+
+ goto end_function;
+ edbg("SEP Driver: about to write IMR REG_ADDR");
+
+ /* set the IMR register - open only GPR 2 */
+ sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13)));
+
+#endif /* SEP_DRIVER_POLLING_MODE */
+end_function:
+ return error;
+}
+
+static struct pci_device_id sep_pci_id_tbl[] = {
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080c)},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl);
+
+/* 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
+};
+
+/*
+ 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);
+}
+
+
+
+/* major and minor device numbers */
+static dev_t sep_devno;
+
+/* the files operations structure of the driver */
+static struct file_operations sep_file_operations = {
+ .owner = THIS_MODULE,
+ .ioctl = sep_ioctl,
+ .poll = sep_poll,
+ .open = sep_open,
+ .release = sep_release,
+ .mmap = sep_mmap,
+};
+
+
+/* cdev struct of the driver */
+static struct cdev sep_cdev;
+
+/*
+ this function registers the driver to the file system
+*/
+static int sep_register_driver_to_fs(void)
+{
+ int ret_val = alloc_chrdev_region(&sep_devno, 0, 1, "sep_sec_driver");
+ if (ret_val) {
+ edbg("sep_driver:major number allocation failed, retval is %d\n", ret_val);
+ goto end_function;
+ }
+
+ /* init cdev */
+ cdev_init(&sep_cdev, &sep_file_operations);
+ sep_cdev.owner = THIS_MODULE;
+
+ /* register the driver with the kernel */
+ ret_val = cdev_add(&sep_cdev, sep_devno, 1);
+
+ if (ret_val) {
+ edbg("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(sep_devno, 1);
+
+end_function:
+ return ret_val;
+}
+
+/*
+ this function unregisters driver from fs
+*/
+static void sep_unregister_driver_from_fs(void)
+{
+ cdev_del(&sep_cdev);
+ /* unregister dev numbers */
+ unregister_chrdev_region(sep_devno, 1);
+}
+
+
+/*--------------------------------------------------------------
+ init function
+----------------------------------------------------------------*/
+static int __init sep_init(void)
+{
+ int ret_val = 0;
+ int counter;
+ int size; /* size of memory for allocation */
+
+ dbg("SEP Driver:-------->Init start\n");
+ edbg("sep->shared_area_addr = %lx\n", (unsigned long) &sep_dev->shared_area_addr);
+
+ /* transaction counter that coordinates the transactions between SEP
+ and HOST */
+ sep_dev->host_to_sep_send_counter = 0;
+
+ /* counter for the messages from sep */
+ sep_dev->sep_to_host_reply_counter = 0;
+
+ /* counter for the number of bytes allocated in the pool
+ for the current transaction */
+ sep_dev->data_pool_bytes_allocated = 0;
+
+ /* set the starting mode to blocking */
+ sep_dev->block_mode_flag = 1;
+
+ ret_val = sep_register_driver_to_device();
+ if (ret_val) {
+ edbg("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, &sep_dev->shared_area_addr, &sep_dev->phys_shared_area_addr)) {
+ ret_val = -ENOMEM;
+ /* allocation failed */
+ goto end_function_unmap_io_memory;
+ }
+ /* now set the memory regions */
+ sep_dev->message_shared_area_addr = sep_dev->shared_area_addr;
+
+ edbg("SEP Driver: g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr);
+
+#if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1)
+ /* send the new SHARED MESSAGE AREA to the SEP */
+ sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep_dev->phys_shared_area_addr);
+
+ /* poll for SEP response */
+ retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR);
+ while (retVal != 0xffffffff && retVal != sep_dev->phys_shared_area_addr)
+ retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR);
+
+ /* check the return value (register) */
+ if (retVal != sep_dev->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++)
+ sep_dev->flows_data_array[counter].flow_id = SEP_FREE_FLOW_ID;
+
+ sep_dev->flow_wq_ptr = create_singlethread_workqueue("sepflowwq");
+ if (sep_dev->flow_wq_ptr == 0) {
+ ret_val = -ENOMEM;
+ edbg("sep_driver:flow queue creation failed\n");
+ goto end_function_deallocate_sep_shared_area;
+ }
+ edbg("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, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr);
+end_function_unmap_io_memory:
+ iounmap((void *) sep_dev->reg_base_address);
+ /* release io memory region */
+ release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE);
+end_function:
+ dbg("SEP Driver:<-------- Init end\n");
+ return ret_val;
+}
+
+
+/*-------------------------------------------------------------
+ exit function
+--------------------------------------------------------------*/
+static void __exit sep_exit(void)
+{
+ int size;
+
+ dbg("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, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr);
+ edbg("SEP Driver: free pages SEP SHARED AREA \n");
+ iounmap((void *) sep_dev->reg_base_address);
+ edbg("SEP Driver: iounmap \n");
+ /* release io memory region */
+ release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE);
+ edbg("SEP Driver: release_mem_region \n");
+ dbg("SEP Driver:<-------- Exit end\n");
+}
+
+
+module_init(sep_init);
+module_exit(sep_exit);
+
+MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- *
- * 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"
-#include "sep_dev.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
-
-/*
- * THESE 2 definitions are specific to the board - must be
- * defined during integration
- */
-#define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0xFF0D0000
-
-/* 2M size */
-
-void sep_load_rom_code(void)
-{
- /* 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);
-
- edbg("SEP Driver: DX_CC_TST_SepRomLoader start\n");
-
- edbg("SEP Driver: k is %lu\n", k);
- edbg("SEP Driver: sep_dev->reg_base_address is %p\n", sep_dev->reg_base_address);
- edbg("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_reg(sep_dev, SEP_ROM_BANK_register_offset, i);
-
- for (j = 0; j < CRYS_SEP_ROM_length / 4; j++) {
- sep_write_reg(sep_dev, 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_reg(sep_dev, HW_HOST_SEP_SW_RST_REG_ADDR, 0x1);
-
- /* poll for SEP ROM boot finish */
- do {
- retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
- } while (!regVal);
-
- edbg("SEP Driver: ROM polling ended\n");
-
- switch (regVal) {
- case 0x1:
- /* fatal error - read erro status from GPRO */
- Error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
- edbg("SEP Driver: ROM polling case 1\n");
- break;
- case 0x2:
- /* Boot First Phase ended */
- warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
- edbg("SEP Driver: ROM polling case 2\n");
- break;
- case 0x4:
- /* Cold boot ended successfully */
- warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
- edbg("SEP Driver: ROM polling case 4\n");
- Error = 0;
- break;
- case 0x8:
- /* Warmboot ended successfully */
- warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
- edbg("SEP Driver: ROM polling case 8\n");
- Error = 0;
- break;
- case 0x10:
- /* ColdWarm boot ended successfully */
- warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
- edbg("SEP Driver: ROM polling case 16\n");
- Error = 0;
- break;
- case 0x20:
- edbg("SEP Driver: ROM polling case 32\n");
- break;
- }
-
-}
-
-#else
-void sep_load_rom_code(void) { }
-#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);
-
-/* Keep this a single static object for now to keep the conversion easy */
-
-static struct sep_device sep_instance;
-struct sep_device *sep_dev = &sep_instance;
-
-/* temporary */
-unsigned long jiffies_future;
-
-/*-----------------------------
- private functions
---------------------------------*/
-
-/*
- 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)
-{
- unsigned long resident_addr;
- 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;
-
- edbg("SEP Driver:rar_virtual is %p\n", sep_dev->rar_virtual_address);
- edbg("SEP Driver:rar_physical is %08lx\n", sep_dev->rar_physical_address);
-
- sep_dev->rar_region_addr = (unsigned long) sep_dev->rar_virtual_address;
-
- sep_dev->cache_physical_address = sep_dev->rar_physical_address;
- sep_dev->cache_virtual_address = sep_dev->rar_virtual_address;
-
- /* load cache */
- error = request_firmware(&fw, cache_name, &sep_dev->sep_pci_dev_ptr->dev);
- if (error) {
- edbg("SEP Driver:cant request cache fw\n");
- goto end_function;
- }
-
- edbg("SEP Driver:cache data loc is %p\n", (void *) fw->data);
- edbg("SEP Driver:cache data size is %08Zx\n", fw->size);
-
- memcpy((void *) sep_dev->cache_virtual_address, (void *) fw->data, fw->size);
-
- sep_dev->cache_size = fw->size;
-
- cache_addr = (unsigned long) sep_dev->cache_virtual_address;
-
- release_firmware(fw);
-
- sep_dev->resident_physical_address = sep_dev->cache_physical_address + sep_dev->cache_size;
- sep_dev->resident_virtual_address = sep_dev->cache_virtual_address + sep_dev->cache_size;
-
- /* load resident */
- error = request_firmware(&fw, res_name, &sep_dev->sep_pci_dev_ptr->dev);
- if (error) {
- edbg("SEP Driver:cant request res fw\n");
- goto end_function;
- }
-
- edbg("SEP Driver:res data loc is %p\n", (void *) fw->data);
- edbg("SEP Driver:res data size is %08Zx\n", fw->size);
-
- memcpy((void *) sep_dev->resident_virtual_address, (void *) fw->data, fw->size);
-
- sep_dev->resident_size = fw->size;
-
- release_firmware(fw);
-
- resident_addr = (unsigned long) sep_dev->resident_virtual_address;
-
- edbg("SEP Driver:resident_addr (physical )is %08lx\n", sep_dev->resident_physical_address);
- edbg("SEP Driver:cache_addr (physical) is %08lx\n", sep_dev->cache_physical_address);
-
- edbg("SEP Driver:resident_addr (logical )is %08lx\n", resident_addr);
- edbg("SEP Driver:cache_addr (logical) is %08lx\n", cache_addr);
-
- edbg("SEP Driver:resident_size is %08lx\n", sep_dev->resident_size);
- edbg("SEP Driver:cache_size is %08lx\n", sep_dev->cache_size);
-
-
-
- /* physical addresses */
- *dst_new_cache_addr_ptr = sep_dev->cache_physical_address;
- *dst_new_resident_addr_ptr = sep_dev->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);
- sep_dev->shared_virtual_address = kmalloc(shared_area_size, GFP_KERNEL);
- if (!sep_dev->shared_virtual_address) {
- edbg("sep_driver:shared memory kmalloc failed\n");
- return -1;
- }
- /* FIXME */
- sep_dev->shared_physical_address = __pa(sep_dev->shared_virtual_address);
- /* shared_physical_address = 0xda00000; */
- *kernel_shared_area_addr_ptr = (unsigned long) sep_dev->shared_virtual_address;
- /* set the physical address of the shared area */
- *phys_shared_area_addr_ptr = sep_dev->shared_physical_address;
- edbg("SEP Driver:shared_virtual_address is %p\n", sep_dev->shared_virtual_address);
- edbg("SEP Driver:shared_region_size is %08lx\n", shared_area_size);
- edbg("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);
-}
-
-/*
- 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)
-{
- edbg("SEP Driver:sh virt to phys v %08lx\n", virt_address);
- edbg("SEP Driver:sh virt to phys p %08lx\n", sep_dev->shared_physical_address + (virt_address - (unsigned long) sep_dev->shared_virtual_address));
-
- return (unsigned long) sep_dev->shared_physical_address + (virt_address - (unsigned long) sep_dev->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) sep_dev->shared_virtual_address + (phys_address - sep_dev->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)
-{
- int error = 0;
-
- edbg("Sep pci probe starting\n");
-
- /* enable the device */
- error = pci_enable_device(pdev);
- if (error) {
- edbg("error enabling pci device\n");
- goto end_function;
- }
-
- /* set the pci dev pointer */
- sep_dev->sep_pci_dev_ptr = pdev;
-
- /* get the io memory start address */
- sep_dev->io_memory_start_physical_address = pci_resource_start(pdev, 0);
- if (!sep_dev->io_memory_start_physical_address) {
- edbg("SEP Driver error pci resource start\n");
- goto end_function;
- }
-
- /* get the io memory end address */
- sep_dev->io_memory_end_physical_address = pci_resource_end(pdev, 0);
- if (!sep_dev->io_memory_end_physical_address) {
- edbg("SEP Driver error pci resource end\n");
- goto end_function;
- }
-
- sep_dev->io_memory_size = sep_dev->io_memory_end_physical_address - sep_dev->io_memory_start_physical_address + 1;
-
- edbg("SEP Driver:io_memory_start_physical_address is %08lx\n", sep_dev->io_memory_start_physical_address);
-
- edbg("SEP Driver:io_memory_end_phyaical_address is %08lx\n", sep_dev->io_memory_end_physical_address);
-
- edbg("SEP Driver:io_memory_size is %08lx\n", sep_dev->io_memory_size);
-
- sep_dev->io_memory_start_virtual_address = ioremap_nocache(sep_dev->io_memory_start_physical_address, sep_dev->io_memory_size);
- if (!sep_dev->io_memory_start_virtual_address) {
- edbg("SEP Driver error ioremap of io memory\n");
- goto end_function;
- }
-
- edbg("SEP Driver:io_memory_start_virtual_address is %p\n", sep_dev->io_memory_start_virtual_address);
-
- sep_dev->reg_base_address = (void __iomem *) sep_dev->io_memory_start_virtual_address;
-
-
- /* set up system base address and shared memory location */
-
- sep_dev->rar_virtual_address = kmalloc(2 * SEP_RAR_IO_MEM_REGION_SIZE, GFP_KERNEL);
-
- if (!sep_dev->rar_virtual_address) {
- edbg("SEP Driver:cant kmalloc rar\n");
- goto end_function;
- }
- /* FIXME */
- sep_dev->rar_physical_address = __pa(sep_dev->rar_virtual_address);
-
- edbg("SEP Driver:rar_physical is %08lx\n", sep_dev->rar_physical_address);
- edbg("SEP Driver:rar_virtual is %p\n", sep_dev->rar_virtual_address);
-
-#if !SEP_DRIVER_POLLING_MODE
-
- edbg("SEP Driver: about to write IMR and ICR REG_ADDR\n");
-
- /* clear ICR register */
- sep_write_reg(sep_dev, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF);
-
- /* set the IMR register - open only GPR 2 */
- sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13)));
-
- /* figure out our irq */
- /* FIXME: */
- error = pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, (u8 *) & sep_dev->sep_irq);
-
- edbg("SEP Driver: my irq is %d\n", sep_irq);
-
- edbg("SEP Driver: about to call request_irq\n");
- /* get the interrupt line */
- error = request_irq(sep_irq, sep_inthandler, IRQF_SHARED, "sep_driver", &sep_dev->reg_base_address);
- if (error)
- goto end_function;
-
- goto end_function;
- edbg("SEP Driver: about to write IMR REG_ADDR");
-
- /* set the IMR register - open only GPR 2 */
- sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13)));
-
-#endif /* SEP_DRIVER_POLLING_MODE */
-end_function:
- return error;
-}
-
-static struct pci_device_id sep_pci_id_tbl[] = {
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080c)},
- {0}
-};
-
-MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl);
-
-/* 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
-};
-
-/*
- 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);
-}
-
-
+++ /dev/null
-/*
- *
- * 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"
-#include "sep_dev.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");
-
-
-/*
- mutex for the access to the internals of the sep driver
-*/
-static DEFINE_MUTEX(sep_mutex);
-
-
-/* wait queue head (event) of the driver */
-static DECLARE_WAIT_QUEUE_HEAD(g_sep_event);
-
-
-
-/*------------------------------------------------
- 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 returns the address of the message shared area
-*/
-void sep_map_shared_area(unsigned long *mappedAddr_ptr)
-{
- *mappedAddr_ptr = sep_dev->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_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF))
- retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
-
- sep_dev->sep_to_host_reply_counter++;
-#else
- /* poll, until reply from sep */
- wait_event(g_sep_event, (sep_dev->host_to_sep_send_counter == sep_dev->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)
-{
- int error;
-
- dbg("SEP Driver:--------> open start\n");
-
- error = 0;
-
- /* check the blocking mode */
- if (sep_dev->block_mode_flag)
- /* lock mutex */
- mutex_lock(&sep_mutex);
- else
- error = mutex_trylock(&sep_mutex);
-
- /* check the error */
- if (error) {
- edbg("SEP Driver: down_interruptible failed\n");
-
- goto end_function;
- }
-
- /* release data pool allocations */
- sep_dev->data_pool_bytes_allocated = 0;
-
-end_function:
- dbg("SEP Driver:<-------- open end\n");
- return error;
-}
-
-
-
-
-/*------------------------------------------------------------
- release function
--------------------------------------------------------------*/
-static int sep_release(struct inode *inode_ptr, struct file *file_ptr)
-{
- dbg("----------->SEP Driver: sep_release start\n");
-
-#if 0 /*!SEP_DRIVER_POLLING_MODE */
- /* close IMR */
- sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF);
-
- /* release IRQ line */
- free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address);
-
-#endif
-
- /* unlock the sep mutex */
- mutex_unlock(&sep_mutex);
-
- dbg("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)
-{
- unsigned long phys_addr;
-
- dbg("-------->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) {
- edbg("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;
- }
-
- edbg("SEP Driver:g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr);
-
- /* get physical address */
- phys_addr = sep_dev->phys_shared_area_addr;
-
- edbg("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)) {
- edbg("SEP Driver remap_page_range failed\n");
- printk(KERN_WARNING "SEP Driver remap_page_range failed\n");
- return -EAGAIN;
- }
-
- dbg("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;
- unsigned long retVal = 0; /* flow id */
-
- dbg("---------->SEP Driver poll: start\n");
-
-
-#if SEP_DRIVER_POLLING_MODE
-
- while (sep_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) {
- retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
-
- for (count = 0; count < 10 * 4; count += 4)
- edbg("Poll Debug Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + count)));
- }
-
- sep_dev->sep_to_host_reply_counter++;
-#else
- /* add the event to the polling wait table */
- poll_wait(filp, &g_sep_event, wait);
-
-#endif
-
- edbg("sep_dev->host_to_sep_send_counter is %lu\n", sep_dev->host_to_sep_send_counter);
- edbg("sep_dev->sep_to_host_reply_counter is %lu\n", sep_dev->sep_to_host_reply_counter);
-
- /* check if the data is ready */
- if (sep_dev->host_to_sep_send_counter == sep_dev->sep_to_host_reply_counter) {
- for (count = 0; count < 12 * 4; count += 4)
- edbg("Sep Mesg Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count)));
-
- for (count = 0; count < 10 * 4; count += 4)
- edbg("Debug Data Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + 0x1800 + count)));
-
- retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR);
- edbg("retVal is %lu\n", retVal);
- /* check if the this is sep reply or request */
- if (retVal >> 31) {
- edbg("SEP Driver: sep request in\n");
- /* request */
- mask |= POLLOUT | POLLWRNORM;
- } else {
- edbg("SEP Driver: sep reply in\n");
- mask |= POLLIN | POLLRDNORM;
- }
- }
- dbg("SEP Driver:<-------- poll exit\n");
- return mask;
-}
-
-
-static int sep_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
-{
- int error = 0;
-
- dbg("------------>SEP Driver: ioctl start\n");
-
- edbg("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();
- edbg("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;
- }
- dbg("SEP Driver:<-------- ioctl end\n");
- return error;
-}
-
-
-
-/*
- interrupt handler function
-*/
-irqreturn_t sep_inthandler(int irq, void *dev_id)
-{
- irqreturn_t int_error;
- unsigned long error;
- unsigned long reg_val;
- unsigned long flow_id;
- struct sep_flow_context_t *flow_context_ptr;
-
- int_error = IRQ_HANDLED;
-
- /* read the IRR register to check if this is SEP interrupt */
- reg_val = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR);
- edbg("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 */
- flow_id = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR);
-
- /* 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(sep_dev->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_dev->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_reg(sep_dev, 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;
- unsigned long result;
-
- dbg("SEP Driver:--------> sep_prepare_input_dma_table start\n");
-
- edbg("SEP Driver:data_size is %lu\n", data_size);
- edbg("SEP Driver:block_size is %lu\n", block_size);
-
- /* initialize the pages pointers */
- sep_dev->in_page_array = 0;
- sep_dev->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 *) (sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES);
- in_lli_table_ptr->physical_address = sep_dev->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 = sep_dev->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_dev->in_num_pages, &lli_array_ptr, &sep_dev->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_dev->in_num_pages, &lli_array_ptr, &sep_dev->in_page_array);
-
- if (result)
- return result;
-
- edbg("SEP Driver:output sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages);
-
- current_entry = 0;
- info_entry_ptr = 0;
- sep_lli_entries = sep_dev->in_num_pages;
-
- /* initiate to point after the message area */
- lli_table_alloc_addr = sep_dev->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;
-
- edbg("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;
-
- edbg("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:
- dbg("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;
- int result = 0;
-
- dbg("SEP Driver:--------> sep_prepare_input_output_dma_table start\n");
-
- /* initialize the pages pointers */
- sep_dev->in_page_array = 0;
- sep_dev->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_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array);
- if (result) {
- edbg("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_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array);
- if (result) {
- edbg("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_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array);
- if (result) {
- edbg("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_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array);
- if (result) {
- edbg("SEP Driver: sep_lock_user_pages for output virtual buffer failed\n");
- goto end_function_with_error1;
- }
- }
- edbg("sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages);
- edbg("sep_dev->out_num_pages is %lu\n", sep_dev->out_num_pages);
- edbg("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_dev->in_num_pages, lli_out_array, sep_dev->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) {
- edbg("SEP Driver: sep_construct_dma_tables_from_lli failed\n");
- goto end_function_with_error2;
- }
-
- /* fall through - free the lli entry arrays */
- dbg("in_num_entries_ptr is %08lx\n", *in_num_entries_ptr);
- dbg("out_num_entries_ptr is %08lx\n", *out_num_entries_ptr);
- dbg("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:
- dbg("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;
-
- dbg("SEP Driver:--------> sep_construct_dma_tables_from_lli start\n");
-
- /* initiate to pint after the message area */
- lli_table_alloc_addr = sep_dev->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));
-
- edbg("SEP Driver:in_table_data_size is %lu\n", in_table_data_size);
- edbg("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;
-
- dbg("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;
-
- edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr);
- edbg("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;
-
- edbg("SEP Driver:output num_entries_out_table is %lu\n", (unsigned long) num_entries_out_table);
- edbg("SEP Driver:output info_in_entry_ptr is %lu\n", (unsigned long) info_in_entry_ptr);
- edbg("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);
- dbg("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)
-{
- unsigned long table_data_size = 0;
- unsigned long counter;
-
- /* 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)
-{
- unsigned long curr_table_data_size;
- /* counter of lli array entry */
- unsigned long array_counter;
-
- dbg("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;
-
- edbg("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;
-
- edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr);
- edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address);
- edbg("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) {
- edbg("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++;
-
- edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address);
- edbg("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;
-
- edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr);
- edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address);
- edbg("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;
-
- edbg("SEP Driver:*num_processed_entries_ptr is %lu\n", *num_processed_entries_ptr);
- dbg("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;
-
- dbg("SEP Driver:--------> sep_debug_print_lli_tables start\n");
-
- table_count = 1;
- while ((unsigned long) lli_table_ptr != 0xffffffff) {
- edbg("SEP Driver: lli table %08lx, table_data_size is %lu\n", table_count, table_data_size);
- edbg("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++) {
- edbg("SEP Driver:lli_table_ptr address is %08lx\n", (unsigned long) lli_table_ptr);
- edbg("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--;
-
- edbg("SEP Driver:phys lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size);
- edbg("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);
-
- edbg("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++;
- }
- dbg("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)
-{
- int error = 0;
- /* 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;
- struct page **page_array;
- struct sep_lli_entry_t *lli_array;
- unsigned long count;
- int result;
-
- dbg("SEP Driver:--------> sep_lock_user_pages start\n");
-
- /* 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;
-
- edbg("SEP Driver: app_virt_addr is %08lx\n", app_virt_addr);
- edbg("SEP Driver: data_size is %lu\n", data_size);
- edbg("SEP Driver: start_page is %lu\n", start_page);
- edbg("SEP Driver: end_page is %lu\n", end_page);
- edbg("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) {
- edbg("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) {
- edbg("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) {
- dbg("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 */
- dbg("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;
-
- edbg("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) {
- dbg("app_virt_addr is %08lx\n", app_virt_addr);
- dbg("data_size is %lu\n", data_size);
- while (1);
- }
- edbg("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]);
- kfree(lli_array);
-end_function_with_error1:
- kfree(page_array);
-end_function:
- dbg("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)
-{
- int error = 0;
- /* 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;
- struct sep_lli_entry_t *lli_array;
- /* next kernel address to map */
- unsigned long next_kernel_address;
- unsigned long count;
-
- dbg("SEP Driver:--------> sep_lock_kernel_pages start\n");
-
- /* 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;
-
- edbg("SEP Driver: kernel_virt_addr is %08lx\n", kernel_virt_addr);
- edbg("SEP Driver: data_size is %lu\n", data_size);
- edbg("SEP Driver: start_page is %lx\n", start_page);
- edbg("SEP Driver: end_page is %lx\n", end_page);
- edbg("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) {
- edbg("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 */
- dbg("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;
-
- edbg("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) {
- dbg("app_virt_addr is %08lx\n", kernel_virt_addr);
- dbg("data_size is %lu\n", data_size);
- while (1);
- }
-
- edbg("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:
- dbg("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)
-{
- unsigned long count;
-
- 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;
-
- dbg("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)
- edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count)));
-
- /* update counter */
- sep_dev->host_to_sep_send_counter++;
- /* send interrupt to SEP */
- sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2);
- dbg("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;
-
- dbg("SEP Driver:--------> sep_send_reply_command_handler start\n");
-
- /* flash cache */
- flush_cache_all();
- for (count = 0; count < 12 * 4; count += 4)
- edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count)));
- /* update counter */
- sep_dev->host_to_sep_send_counter++;
- /* send the interrupt to SEP */
- sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep_dev->host_to_sep_send_counter);
- /* update both counters */
- sep_dev->host_to_sep_send_counter++;
- sep_dev->sep_to_host_reply_counter++;
- dbg("SEP Driver:<-------- sep_send_reply_command_handler end\n");
-}
-
-
-
-/*
- 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)
-{
- int error;
- struct sep_driver_alloc_t command_args;
-
- dbg("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_dev->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_dev->data_pool_bytes_allocated;
- command_args.phys_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep_dev->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_dev->data_pool_bytes_allocated += command_args.num_bytes;
-
-end_function:
- dbg("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)
-{
- int error;
- unsigned long virt_address;
- unsigned long app_in_address;
- unsigned long num_bytes;
- unsigned long data_pool_area_addr;
-
- dbg("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 = sep_dev->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:
- dbg("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)
-{
- int error;
- /* virtual address of dest application buffer */
- unsigned long app_out_address;
- /* virtual address of the data pool */
- unsigned long virt_address;
- unsigned long num_bytes;
- unsigned long data_pool_area_addr;
-
- dbg("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 = sep_dev->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:
- dbg("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)
-{
- int error;
- /* command arguments */
- struct sep_driver_build_sync_table_t command_args;
-
- dbg("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;
-
- edbg("app_in_address is %08lx\n", command_args.app_in_address);
- edbg("app_out_address is %08lx\n", command_args.app_out_address);
- edbg("data_size is %lu\n", command_args.data_in_size);
- edbg("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:
- dbg("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()
-{
- dbg("SEP Driver:--------> sep_free_dma_table_data_handler start\n");
-
- /* free input pages array */
- sep_free_dma_pages(sep_dev->in_page_array, sep_dev->in_num_pages, 0);
-
- /* free output pages array if needed */
- if (sep_dev->out_page_array)
- sep_free_dma_pages(sep_dev->out_page_array, sep_dev->out_num_pages, 1);
-
- /* reset all the values */
- sep_dev->in_page_array = 0;
- sep_dev->out_page_array = 0;
- sep_dev->in_num_pages = 0;
- sep_dev->out_num_pages = 0;
- dbg("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)
-{
- int error;
- 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;
-
- dbg("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:
- dbg("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)
-{
- int error;
- unsigned long num_entries;
- struct sep_driver_add_flow_table_t command_args;
- 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;
-
- dbg("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));
-end_function_with_error:
- /* free the allocated tables */
- sep_deallocated_flow_tables(&first_table_data);
-end_function:
- dbg("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)
-{
- int error;
- struct sep_driver_add_message_t command_args;
- struct sep_flow_context_t *flow_context_ptr;
-
- dbg("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:
- dbg("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)
-{
- int error;
- struct sep_driver_static_pool_addr_t command_args;
-
- dbg("SEP Driver:--------> sep_get_static_pool_addr_handler start\n");
-
- /*prepare the output parameters in the struct */
- command_args.physical_static_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES;
- command_args.virtual_static_address = sep_dev->shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES;
-
- edbg("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));
- dbg("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)
-{
- int error;
- struct sep_driver_get_mapped_offset_t command_args;
-
- dbg("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 < sep_dev->phys_shared_area_addr) {
- error = -ENOTTY;
- goto end_function;
- }
-
- /*prepare the output parameters in the struct */
- command_args.offset = command_args.physical_address - sep_dev->phys_shared_area_addr;
-
- edbg("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));
-end_function:
- dbg("SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n");
- return error;
-}
-
-
-/*
- ?
-*/
-static int sep_start_handler(void)
-{
- unsigned long reg_val;
- unsigned long error = 0;
-
- dbg("SEP Driver:--------> sep_start_handler start\n");
-
- /* wait in polling for message from SEP */
- do
- reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
- while (!reg_val);
-
- /* check the value */
- if (reg_val == 0x1)
- /* fatal error - read erro status from GPRO */
- error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
-end_function:
- dbg("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)
-{
- unsigned long message_word;
- unsigned long *message_ptr;
- struct sep_driver_init_t command_args;
- unsigned long counter;
- unsigned long error;
- unsigned long reg_val;
-
- dbg("SEP Driver:--------> sep_init_handler start\n");
- error = 0;
-
- error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_init_t));
-
- dbg("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(); */
-
- dbg("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_reg(sep_dev, 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_reg(sep_dev, HW_SRAM_DATA_REG_ADDR, message_word);
- edbg("SEP Driver:message_word is %lu\n", message_word);
- /* wait for write complete */
- sep_wait_sram_write(sep_dev);
- }
- dbg("SEP Driver:--------> sep_init_handler - finished getting messages from user space\n");
- /* signal SEP */
- sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1);
-
- do
- reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR);
- while (!(reg_val & 0xFFFFFFFD));
-
- dbg("SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n");
-
- /* check the value */
- if (reg_val == 0x1) {
- edbg("SEP Driver:init failed\n");
-
- error = sep_read_reg(sep_dev, 0x8060);
- edbg("SEP Driver:sw monitor is %lu\n", error);
-
- /* fatal error - read erro status from GPRO */
- error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR);
- edbg("SEP Driver:error is %lu\n", error);
- }
-end_function:
- dbg("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)
-{
- int error;
- unsigned long phys_cache_address;
- unsigned long phys_resident_address;
- struct sep_driver_realloc_cache_resident_t command_args;
-
- /* 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 = sep_dev->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 = sep_dev->phys_shared_area_addr;
-
- edbg("SEP Driver:command_args.new_shared_area_addr is %08lx\n", command_args.new_shared_area_addr);
- edbg("SEP Driver:command_args.new_base_addr is %08lx\n", command_args.new_base_addr);
- edbg("SEP Driver:command_args.new_resident_addr is %08lx\n", command_args.new_resident_addr);
- edbg("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)
-{
- int error;
- struct sep_driver_get_time_t command_args;
-
- error = sep_set_time(&command_args.time_physical_address, &command_args.time_value);
- 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)
-{
- int error;
- unsigned long mode_flag;
-
- dbg("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 */
- sep_dev->block_mode_flag = mode_flag;
-end_function:
- dbg("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)
-{
- dbg("SEP Driver:--------> sep_end_transaction_handler start\n");
-
-#if 0 /*!SEP_DRIVER_POLLING_MODE */
- /* close IMR */
- sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF);
-
- /* release IRQ line */
- free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address);
-
- /* lock the sep mutex */
- mutex_unlock(&sep_mutex);
-#endif
-
- dbg("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)
-{
- struct sep_flow_context_t *flow_data_ptr;
-
- /* 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 *) sep_dev->shared_area_addr, flow_data_ptr->message_size_in_bytes);
-
- sep_write_reg(sep_dev, 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)
-{
- int error;
- 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_lli_entry_t *prev_info_entry_ptr;
- unsigned long i;
-
- /* 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)
-{
- int error;
- /* the range in pages */
- unsigned long lli_array_size;
- struct sep_lli_entry_t *lli_array;
- struct sep_lli_entry_t *flow_dma_table_entry_ptr;
- unsigned long *start_dma_table_ptr;
- /* total table data counter */
- unsigned long dma_table_data_count;
- /* pointer that will keep the pointer to the pages of the virtual buffer */
- struct page **page_array_ptr;
- unsigned long entry_count;
-
- /* 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 contains the given id
-*/
-static int sep_find_flow_context(unsigned long flow_id, struct sep_flow_context_t **flow_data_ptr)
-{
- unsigned long count;
- int 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 (sep_dev->flows_data_array[count].flow_id == flow_id) {
- *flow_data_ptr = &sep_dev->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)
-{
- int error = 0;
- /* pointer to the id field of the flow dma table */
- unsigned long *start_table_ptr;
- unsigned long flow_dma_area_start_addr;
- unsigned long flow_dma_area_end_addr;
- /* maximum table size in words */
- unsigned long table_size_in_words;
-
- /* find the start address of the flow DMA table area */
- flow_dma_area_start_addr = sep_dev->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 pointer */
- unsigned long *table_ptr;
- /* end address of the flow dma area */
- unsigned long num_entries;
- unsigned long num_pages;
- struct page **pages_ptr;
- /* maximum table size in words */
- struct sep_lli_entry_t *info_entry_ptr;
-
- /* 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)
-{
- int error;
- unsigned long flow_id;
- struct sep_flow_context_t *flow_data_ptr;
-
- dbg("------------>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:
- dbg("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)
-{
- struct timeval time;
- /* address of time in the kernel */
- unsigned long time_addr;
-
-
- dbg("SEP Driver:--------> sep_set_time start\n");
-
- do_gettimeofday(&time);
-
- /* set value in the SYSTEM MEMORY offset */
- time_addr = sep_dev->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;
-
- edbg("SEP Driver:time.tv_sec is %lu\n", time.tv_sec);
- edbg("SEP Driver:time_addr is %lu\n", time_addr);
- edbg("SEP Driver:g_message_shared_area_addr is %lu\n", sep_dev->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;
-
- dbg("SEP Driver:<-------- sep_set_time end\n");
-
- return 0;
-}
-
-static void sep_wait_busy(struct sep_device *dev)
-{
- u32 reg;
-
- do {
- reg = sep_read_reg(sep_dev, HW_HOST_SEP_BUSY_REG_ADDR);
- } while (reg);
-}
-
-/*
- 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
-
- dbg("SEP Driver:<-------- sep_configure_dma_burst start \n");
-
- /* request access to registers from SEP */
- sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2);
-
- dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n");
-
- sep_wait_busy(sep_dev);
-
- dbg("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_reg(sep_dev, HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL);
-
- /* release the sep busy */
- sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL);
- sep_wait_busy(sep_dev);
-
- dbg("SEP Driver:<-------- sep_configure_dma_burst done \n");
-
-}
-
-/* major and minor device numbers */
-static dev_t sep_devno;
-
-/* the files operations structure of the driver */
-static struct file_operations sep_file_operations = {
- .owner = THIS_MODULE,
- .ioctl = sep_ioctl,
- .poll = sep_poll,
- .open = sep_open,
- .release = sep_release,
- .mmap = sep_mmap,
-};
-
-
-/* cdev struct of the driver */
-static struct cdev sep_cdev;
-
-/*
- this function registers the driver to the file system
-*/
-static int sep_register_driver_to_fs(void)
-{
- int ret_val = alloc_chrdev_region(&sep_devno, 0, 1, "sep_sec_driver");
- if (ret_val) {
- edbg("sep_driver:major number allocation failed, retval is %d\n", ret_val);
- goto end_function;
- }
-
- /* init cdev */
- cdev_init(&sep_cdev, &sep_file_operations);
- sep_cdev.owner = THIS_MODULE;
-
- /* register the driver with the kernel */
- ret_val = cdev_add(&sep_cdev, sep_devno, 1);
-
- if (ret_val) {
- edbg("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(sep_devno, 1);
-
-end_function:
- return ret_val;
-}
-
-/*
- this function unregisters driver from fs
-*/
-static void sep_unregister_driver_from_fs(void)
-{
- cdev_del(&sep_cdev);
- /* unregister dev numbers */
- unregister_chrdev_region(sep_devno, 1);
-}
-
-
-/*--------------------------------------------------------------
- init function
-----------------------------------------------------------------*/
-static int __init sep_init(void)
-{
- int ret_val = 0;
- int counter;
- int size; /* size of memory for allocation */
-
- dbg("SEP Driver:-------->Init start\n");
- edbg("sep->shared_area_addr = %lx\n", (unsigned long) &sep_dev->shared_area_addr);
-
- /* transaction counter that coordinates the transactions between SEP
- and HOST */
- sep_dev->host_to_sep_send_counter = 0;
-
- /* counter for the messages from sep */
- sep_dev->sep_to_host_reply_counter = 0;
-
- /* counter for the number of bytes allocated in the pool
- for the current transaction */
- sep_dev->data_pool_bytes_allocated = 0;
-
- /* set the starting mode to blocking */
- sep_dev->block_mode_flag = 1;
-
- ret_val = sep_register_driver_to_device();
- if (ret_val) {
- edbg("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, &sep_dev->shared_area_addr, &sep_dev->phys_shared_area_addr)) {
- ret_val = -ENOMEM;
- /* allocation failed */
- goto end_function_unmap_io_memory;
- }
- /* now set the memory regions */
- sep_dev->message_shared_area_addr = sep_dev->shared_area_addr;
-
- edbg("SEP Driver: g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr);
-
-#if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1)
- /* send the new SHARED MESSAGE AREA to the SEP */
- sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep_dev->phys_shared_area_addr);
-
- /* poll for SEP response */
- retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR);
- while (retVal != 0xffffffff && retVal != sep_dev->phys_shared_area_addr)
- retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR);
-
- /* check the return value (register) */
- if (retVal != sep_dev->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++)
- sep_dev->flows_data_array[counter].flow_id = SEP_FREE_FLOW_ID;
-
- sep_dev->flow_wq_ptr = create_singlethread_workqueue("sepflowwq");
- if (sep_dev->flow_wq_ptr == 0) {
- ret_val = -ENOMEM;
- edbg("sep_driver:flow queue creation failed\n");
- goto end_function_deallocate_sep_shared_area;
- }
- edbg("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, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr);
-end_function_unmap_io_memory:
- iounmap((void *) sep_dev->reg_base_address);
- /* release io memory region */
- release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE);
-end_function:
- dbg("SEP Driver:<-------- Init end\n");
- return ret_val;
-}
-
-
-/*-------------------------------------------------------------
- exit function
---------------------------------------------------------------*/
-static void __exit sep_exit(void)
-{
- int size;
-
- dbg("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, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr);
- edbg("SEP Driver: free pages SEP SHARED AREA \n");
- iounmap((void *) sep_dev->reg_base_address);
- edbg("SEP Driver: iounmap \n");
- /* release io memory region */
- release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE);
- edbg("SEP Driver: release_mem_region \n");
- dbg("SEP Driver:<-------- Exit end\n");
-}
-
-
-module_init(sep_init);
-module_exit(sep_exit);
-
-MODULE_LICENSE("GPL");
projects / linux-2.6-block.git / commitdiff