From: Alan Cox Date: Wed, 24 Nov 2010 19:38:39 +0000 (+0000) Subject: Staging: sep: Make SEP consistent X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6eb44c531763ff50325822bac749e92938782795;p=linux-beck.git Staging: sep: Make SEP consistent SEP is initials so make it consistent in the driver, ditto DMA and DCB Consistent capitalisation of comment leads Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/sep/sep_driver.c b/drivers/staging/sep/sep_driver.c index ff9df36d5461..9c165587a247 100644 --- a/drivers/staging/sep/sep_driver.c +++ b/drivers/staging/sep/sep_driver.c @@ -92,7 +92,7 @@ static int sep_load_firmware(struct sep_device *sep) int error ; unsigned int work1, work2, work3; - /* set addresses and load resident */ + /* Set addresses and load resident */ sep->resident_bus = sep->rar_bus; sep->resident_addr = sep->rar_addr; @@ -113,7 +113,7 @@ static int sep_load_firmware(struct sep_device *sep) dev_dbg(&sep->pdev->dev, "resident size is %08x\n", sep->resident_size); - /* set addresses for dcache (no loading needed) */ + /* Set addresses for dcache (no loading needed) */ work1 = (unsigned int)sep->resident_bus; work2 = (unsigned int)sep->resident_size; work3 = (work1 + work2 + (1024 * 4)) & 0xfffff000; @@ -126,7 +126,7 @@ static int sep_load_firmware(struct sep_device *sep) sep->dcache_size = 1024 * 128; - /* set addresses and load cache */ + /* Set addresses and load cache */ sep->cache_bus = sep->dcache_bus + sep->dcache_size; sep->cache_addr = sep->dcache_addr + sep->dcache_size; @@ -147,7 +147,7 @@ static int sep_load_firmware(struct sep_device *sep) dev_dbg(&sep->pdev->dev, "cache size is %08x\n", sep->cache_size); - /* set addresses and load extapp */ + /* Set addresses and load extapp */ sep->extapp_bus = sep->cache_bus + (1024 * 370); sep->extapp_addr = sep->cache_addr + (1024 * 370); @@ -177,7 +177,7 @@ MODULE_FIRMWARE("sep/extapp.image.bin"); /** * sep_dump_message - dump the message that is pending - * @sep: sep device + * @sep: SEP device */ static void sep_dump_message(struct sep_device *sep) { @@ -205,7 +205,7 @@ static int sep_map_and_alloc_shared_area(struct sep_device *sep) return -ENOMEM; } dev_dbg(&sep->pdev->dev, - "sep: shared_addr %x bytes @%p (bus %llx)\n", + "shared_addr %x bytes @%p (bus %llx)\n", sep->shared_size, sep->shared_addr, (unsigned long long)sep->shared_bus); return 0; @@ -249,7 +249,7 @@ static int sep_singleton_open(struct inode *inode_ptr, struct file *file_ptr) struct sep_device *sep; /* - * Get the sep device structure and use it for the + * Get the SEP device structure and use it for the * private_data field in filp for other methods */ sep = sep_dev; @@ -274,8 +274,8 @@ end_function: /** * sep_open - device open method - * @inode: inode of sep device - * @filp: file handle to sep device + * @inode: inode of SEP device + * @filp: file handle to SEP device * * Open method for the SEP device. Called when userspace opens * the SEP device node. @@ -287,7 +287,7 @@ static int sep_open(struct inode *inode, struct file *filp) struct sep_device *sep; /* - * Get the sep device structure and use it for the + * Get the SEP device structure and use it for the * private_data field in filp for other methods */ sep = sep_dev; @@ -320,8 +320,8 @@ static int sep_singleton_release(struct inode *inode, struct file *filp) /** * sep_request_daemonopen - request daemon open method - * @inode: inode of sep device - * @filp: file handle to sep device + * @inode: inode of SEP device + * @filp: file handle to SEP device * * Open method for the SEP request daemon. Called when * request daemon in userspace opens the SEP device node. @@ -359,7 +359,7 @@ static int sep_request_daemon_release(struct inode *inode, struct file *filp) dev_dbg(&sep->pdev->dev, "Reques daemon release for pid %d\n", current->pid); - /* clear the request_daemon_open flag */ + /* Clear the request_daemon_open flag */ clear_bit(0, &sep->request_daemon_open); return 0; } @@ -380,12 +380,12 @@ static int sep_req_daemon_send_reply_command_handler(struct sep_device *sep) sep_dump_message(sep); - /* counters are lockable region */ + /* Counters are lockable region */ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags); sep->send_ct++; sep->reply_ct++; - /* send the interrupt to SEP */ + /* Send the interrupt to SEP */ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep->send_ct); @@ -408,13 +408,13 @@ static int sep_req_daemon_send_reply_command_handler(struct sep_device *sep) * sep_free_dma_table_data_handler - free DMA table * @sep: pointere to struct sep_device * - * Handles the request to free dma table for synchronic actions + * Handles the request to free DMA table for synchronic actions */ static int sep_free_dma_table_data_handler(struct sep_device *sep) { int count; int dcb_counter; - /* pointer to the current dma_resource struct */ + /* Pointer to the current dma_resource struct */ struct sep_dma_resource *dma; dev_dbg(&sep->pdev->dev, "sep_free_dma_table_data_handler start\n"); @@ -422,7 +422,7 @@ static int sep_free_dma_table_data_handler(struct sep_device *sep) for (dcb_counter = 0; dcb_counter < sep->nr_dcb_creat; dcb_counter++) { dma = &sep->dma_res_arr[dcb_counter]; - /* unmap and free input map array */ + /* Unmap and free input map array */ if (dma->in_map_array) { for (count = 0; count < dma->in_num_pages; count++) { dma_unmap_page(&sep->pdev->dev, @@ -433,7 +433,7 @@ static int sep_free_dma_table_data_handler(struct sep_device *sep) kfree(dma->in_map_array); } - /* unmap output map array, DON'T free it yet */ + /* Unmap output map array, DON'T free it yet */ if (dma->out_map_array) { for (count = 0; count < dma->out_num_pages; count++) { dma_unmap_page(&sep->pdev->dev, @@ -444,7 +444,7 @@ static int sep_free_dma_table_data_handler(struct sep_device *sep) kfree(dma->out_map_array); } - /* free page cache for output */ + /* Free page cache for output */ if (dma->in_page_array) { for (count = 0; count < dma->in_num_pages; count++) { flush_dcache_page(dma->in_page_array[count]); @@ -463,7 +463,7 @@ static int sep_free_dma_table_data_handler(struct sep_device *sep) kfree(dma->out_page_array); } - /* reset all the values */ + /* Reset all the values */ dma->in_page_array = 0; dma->out_page_array = 0; dma->in_num_pages = 0; @@ -503,7 +503,7 @@ static int sep_request_daemon_mmap(struct file *filp, goto end_function; } - /* get physical address */ + /* Get physical address */ bus_address = sep->shared_bus; dev_dbg(&sep->pdev->dev, "bus_address is %08lx\n", @@ -524,7 +524,7 @@ end_function: /** * sep_request_daemon_poll - poll implementation - * @sep: struct sep_device * for current sep device + * @sep: struct sep_device * for current SEP device * @filp: struct file * for open file * @wait: poll_table * for poll * @@ -547,7 +547,7 @@ static unsigned int sep_request_daemon_poll(struct file *filp, sep->send_ct, sep->reply_ct); spin_lock_irqsave(&sep->snd_rply_lck, lck_flags); - /* check if the data is ready */ + /* Check if the data is ready */ if (sep->send_ct == sep->reply_ct) { spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags); @@ -555,13 +555,13 @@ static unsigned int sep_request_daemon_poll(struct file *filp, dev_dbg(&sep->pdev->dev, "daemon poll: data check (GPR2) is %x\n", retval2); - /* check if PRINT request */ + /* Check if PRINT request */ if ((retval2 >> 30) & 0x1) { dev_dbg(&sep->pdev->dev, "daemon poll: PRINTF request in\n"); mask |= POLLIN; goto end_function; } - /* check if NVS request */ + /* Check if NVS request */ if (retval2 >> 31) { dev_dbg(&sep->pdev->dev, "daemon poll: NVS request in\n"); mask |= POLLPRI | POLLWRNORM; @@ -591,7 +591,7 @@ static int sep_release(struct inode *inode, struct file *filp) dev_dbg(&sep->pdev->dev, "Release for pid %d\n", current->pid); mutex_lock(&sep->sep_mutex); - /* is this the process that has a transaction open? + /* Is this the process that has a transaction open? * If so, lets reset pid_doing_transaction to 0 and * clear the in use flags, and then wake up sep_event * so that other processes can do transactions @@ -614,7 +614,7 @@ static int sep_release(struct inode *inode, struct file *filp) * @filp: pointer to struct file * @vma: pointer to vm_area_struct * - * Called on an mmap of our space via the normal sep device + * Called on an mmap of our space via the normal SEP device */ static int sep_mmap(struct file *filp, struct vm_area_struct *vma) { @@ -636,8 +636,8 @@ static int sep_mmap(struct file *filp, struct vm_area_struct *vma) /* * The pid_doing_transaction indicates that this process * now owns the facilities to performa a transaction with - * the sep. While this process is performing a transaction, - * no other process who has the sep device open can perform + * the SEP. While this process is performing a transaction, + * no other process who has the SEP device open can perform * any transactions. This method allows more than one process * to have the device open at any given time, which provides * finer granularity for device utilization by multiple @@ -647,12 +647,12 @@ static int sep_mmap(struct file *filp, struct vm_area_struct *vma) sep->pid_doing_transaction = current->pid; mutex_unlock(&sep->sep_mutex); - /* zero the pools and the number of data pool alocation pointers */ + /* Zero the pools and the number of data pool alocation pointers */ sep->data_pool_bytes_allocated = 0; sep->num_of_data_allocations = 0; /* - * check that the size of the mapped range is as the size of the message + * 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) { @@ -662,7 +662,7 @@ static int sep_mmap(struct file *filp, struct vm_area_struct *vma) dev_dbg(&sep->pdev->dev, "shared_addr is %p\n", sep->shared_addr); - /* get bus address */ + /* Get bus address */ bus_addr = sep->shared_bus; dev_dbg(&sep->pdev->dev, @@ -678,13 +678,13 @@ static int sep_mmap(struct file *filp, struct vm_area_struct *vma) goto end_function; end_function_with_error: - /* clear the bit */ + /* Clear the bit */ clear_bit(SEP_MMAP_LOCK_BIT, &sep->in_use_flags); mutex_lock(&sep->sep_mutex); sep->pid_doing_transaction = 0; mutex_unlock(&sep->sep_mutex); - /* raise event for stuck contextes */ + /* Raise event for stuck contextes */ dev_warn(&sep->pdev->dev, "mmap error - waking up event\n"); wake_up(&sep->event); @@ -722,14 +722,14 @@ static unsigned int sep_poll(struct file *filp, poll_table *wait) } mutex_unlock(&sep->sep_mutex); - /* check if send command or send_reply were activated previously */ + /* Check if send command or send_reply were activated previously */ if (!test_bit(SEP_SEND_MSG_LOCK_BIT, &sep->in_use_flags)) { dev_warn(&sep->pdev->dev, "poll; lock bit set\n"); mask = POLLERR; goto end_function; } - /* add the event to the polling wait table */ + /* Add the event to the polling wait table */ dev_dbg(&sep->pdev->dev, "poll: calling wait sep_event\n"); poll_wait(filp, &sep->event, wait); @@ -737,7 +737,7 @@ static unsigned int sep_poll(struct file *filp, poll_table *wait) dev_dbg(&sep->pdev->dev, "poll: send_ct is %lx reply ct is %lx\n", sep->send_ct, sep->reply_ct); - /* check if error occured during poll */ + /* Check if error occured during poll */ retval2 = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); if (retval2 != 0x0) { dev_warn(&sep->pdev->dev, "poll; poll error %x\n", retval2); @@ -753,25 +753,24 @@ static unsigned int sep_poll(struct file *filp, poll_table *wait) dev_dbg(&sep->pdev->dev, "poll: data ready check (GPR2) %x\n", retval); - /* check if printf request */ + /* Check if printf request */ if ((retval >> 30) & 0x1) { - dev_dbg(&sep->pdev->dev, "poll: sep printf request\n"); + dev_dbg(&sep->pdev->dev, "poll: SEP printf request\n"); wake_up(&sep->event_request_daemon); goto end_function; } - /* check if the this is sep reply or request */ + /* Check if the this is SEP reply or request */ if (retval >> 31) { - dev_dbg(&sep->pdev->dev, "poll: sep request\n"); + dev_dbg(&sep->pdev->dev, "poll: SEP request\n"); wake_up(&sep->event_request_daemon); } else { dev_dbg(&sep->pdev->dev, "poll: normal return\n"); - /* in case it is again by send_reply_comand */ + /* In case it is again by send_reply_comand */ clear_bit(SEP_SEND_MSG_LOCK_BIT, &sep->in_use_flags); sep_dump_message(sep); dev_dbg(&sep->pdev->dev, - "poll; sep reply POLLIN | POLLRDNORM\n"); - + "poll; SEP reply POLLIN | POLLRDNORM\n"); mask |= POLLIN | POLLRDNORM; } } else { @@ -803,19 +802,19 @@ static u32 *sep_time_address(struct sep_device *sep) * @sep: the SEP we are setting the time for * * Calculates time and sets it at the predefined address. - * Called with the sep mutex held. + * Called with the SEP mutex held. */ static unsigned long sep_set_time(struct sep_device *sep) { struct timeval time; - u32 *time_addr; /* address of time as seen by the kernel */ + u32 *time_addr; /* Address of time as seen by the kernel */ - dev_dbg(&sep->pdev->dev, "sep:sep_set_time start\n"); + dev_dbg(&sep->pdev->dev, "sep_set_time start\n"); do_gettimeofday(&time); - /* set value in the SYSTEM MEMORY offset */ + /* Set value in the SYSTEM MEMORY offset */ time_addr = sep_time_address(sep); time_addr[0] = SEP_TIME_VAL_TOKEN; @@ -830,7 +829,7 @@ static unsigned long sep_set_time(struct sep_device *sep) /** * sep_set_caller_id_handler - insert caller id entry - * @sep: sep device + * @sep: SEP device * @arg: pointer to struct caller_id_struct * * Inserts the data into the caller id table. Note that this function @@ -858,7 +857,7 @@ static int sep_set_caller_id_handler(struct sep_device *sep, u32 arg) goto end_function; } - /* copy the data */ + /* Copy the data */ if (copy_from_user(&command_args, (void __user *)arg, sizeof(command_args))) { error = -EFAULT; @@ -894,9 +893,9 @@ end_function: /** * sep_set_current_caller_id - set the caller id - * @sep: pointer to struct_sep + * @sep: pointer to struct_sep_device * - * Set the caller ID (if it exists) to the sep. Note that this + * Set the caller ID (if it exists) to the SEP. Note that this * function falls under the ioctl lock */ static int sep_set_current_caller_id(struct sep_device *sep) @@ -906,7 +905,7 @@ static int sep_set_current_caller_id(struct sep_device *sep) dev_dbg(&sep->pdev->dev, "sep_set_current_caller_id start\n"); dev_dbg(&sep->pdev->dev, "current process is %d\n", current->pid); - /* zero the previous value */ + /* Zero the previous value */ memset(sep->shared_addr + SEP_CALLER_ID_OFFSET_BYTES, 0, SEP_CALLER_ID_HASH_SIZE_IN_BYTES); @@ -926,7 +925,7 @@ static int sep_set_current_caller_id(struct sep_device *sep) /** * sep_send_command_handler - kick off a command - * @sep: sep being signalled + * @sep: SEP being signalled * * This function raises interrupt to SEP that signals that is has a new * command from the host @@ -946,13 +945,13 @@ static int sep_send_command_handler(struct sep_device *sep) } sep_set_time(sep); - /* only Medfield has caller id */ + /* Only Medfield has caller id */ if (sep->mrst == 0) sep_set_current_caller_id(sep); sep_dump_message(sep); - /* update counter */ + /* Update counter */ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags); sep->send_ct++; spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags); @@ -961,7 +960,7 @@ static int sep_send_command_handler(struct sep_device *sep) "sep_send_command_handler send_ct %lx reply_ct %lx\n", sep->send_ct, sep->reply_ct); - /* send interrupt to SEP */ + /* Send interrupt to SEP */ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); end_function: @@ -971,7 +970,7 @@ end_function: /** * sep_allocate_data_pool_memory_handler -allocate pool memory - * @sep: pointer to struct_sep + * @sep: pointer to struct sep_device * @arg: pointer to struct alloc_struct * * This function handles the allocate data pool memory request @@ -1016,7 +1015,7 @@ static int sep_allocate_data_pool_memory_handler(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "command_args.offset: %x\n", command_args.offset); - /* Place in the shared area that is known by the sep */ + /* Place in the shared area that is known by the SEP */ token_addr = (u32 *)(sep->shared_addr + SEP_DRIVER_DATA_POOL_ALLOCATION_OFFSET_IN_BYTES + (sep->num_of_data_allocations)*2*sizeof(u32)); @@ -1043,7 +1042,7 @@ static int sep_allocate_data_pool_memory_handler(struct sep_device *sep, goto end_function; } - /* update the allocation */ + /* Update the allocation */ sep->data_pool_bytes_allocated += command_args.num_bytes; sep->num_of_data_allocations += 1; @@ -1079,9 +1078,9 @@ static int sep_lock_kernel_pages(struct sep_device *sep, { int error = 0; - /* array of lli */ + /* Array of lli */ struct sep_lli_entry *lli_array; - /* map array */ + /* Map array */ struct sep_dma_map *map_array; dev_dbg(&sep->pdev->dev, @@ -1110,7 +1109,7 @@ static int sep_lock_kernel_pages(struct sep_device *sep, /* - * set the start address of the first page - app data may start not at + * Set the start address of the first page - app data may start not at * the beginning of the page */ lli_array[0].bus_address = (u32)map_array[0].dma_addr; @@ -1121,7 +1120,7 @@ static int sep_lock_kernel_pages(struct sep_device *sep, (unsigned long)lli_array[0].bus_address, lli_array[0].block_size); - /* set the output parameters */ + /* Set the output parameters */ if (in_out_flag == SEP_DRIVER_IN_FLAG) { *lli_array_ptr = lli_array; sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages = 1; @@ -1168,25 +1167,25 @@ static int sep_lock_user_pages(struct sep_device *sep, int error = 0; u32 count; int result; - /* the the page of the end address of the user space buffer */ + /* The the page of the end address of the user space buffer */ u32 end_page; - /* the page of the start address of the user space buffer */ + /* The page of the start address of the user space buffer */ u32 start_page; - /* the range in pages */ + /* The range in pages */ u32 num_pages; - /* array of pointers to page */ + /* Array of pointers to page */ struct page **page_array; - /* array of lli */ + /* Array of lli */ struct sep_lli_entry *lli_array; - /* map array */ + /* Map array */ struct sep_dma_map *map_array; - /* direction of the DMA mapping for locked pages */ + /* Direction of the DMA mapping for locked pages */ enum dma_data_direction dir; dev_dbg(&sep->pdev->dev, "sep_lock_user_pages start\n"); - /* set start and end pages and num pages */ + /* 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; @@ -1199,7 +1198,7 @@ static int sep_lock_user_pages(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "starting page_array malloc\n"); - /* allocate array of pages structure pointers */ + /* Allocate array of pages structure pointers */ page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); if (!page_array) { error = -ENOMEM; @@ -1223,7 +1222,7 @@ static int sep_lock_user_pages(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "starting get_user_pages\n"); - /* convert the application virtual address into a set of physical */ + /* 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, @@ -1232,7 +1231,7 @@ static int sep_lock_user_pages(struct sep_device *sep, up_read(¤t->mm->mmap_sem); - /* check the number of pages locked - if not all then exit with error */ + /* Check the number of pages locked - if not all then exit with error */ if (result != num_pages) { dev_warn(&sep->pdev->dev, "not all pages locked by get_user_pages\n"); @@ -1242,26 +1241,25 @@ static int sep_lock_user_pages(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "get_user_pages succeeded\n"); - /* set direction */ + /* Set direction */ if (in_out_flag == SEP_DRIVER_IN_FLAG) dir = DMA_TO_DEVICE; else dir = DMA_FROM_DEVICE; /* - * fill the array using page array data and - * map the pages - this action - * will also flush the cache as needed + * Fill the array using page array data and + * map the pages - this action will also flush the cache as needed */ for (count = 0; count < num_pages; count++) { - /* fill the map array */ + /* Fill the map array */ map_array[count].dma_addr = dma_map_page(&sep->pdev->dev, page_array[count], 0, PAGE_SIZE, /*dir*/DMA_BIDIRECTIONAL); map_array[count].size = PAGE_SIZE; - /* fill the lli array entry */ + /* Fill the lli array entry */ lli_array[count].bus_address = (u32)map_array[count].dma_addr; lli_array[count].block_size = PAGE_SIZE; @@ -1270,11 +1268,11 @@ static int sep_lock_user_pages(struct sep_device *sep, count, lli_array[count].block_size); } - /* check the offset for the first page */ + /* Check the offset for the first page */ lli_array[0].bus_address = lli_array[0].bus_address + (app_virt_addr & (~PAGE_MASK)); - /* check that not all the data is in the first page only */ + /* 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 @@ -1286,7 +1284,7 @@ static int sep_lock_user_pages(struct sep_device *sep, (unsigned long)lli_array[count].bus_address, lli_array[count].block_size); - /* check the size of the last page */ + /* Check the size of the last page */ if (num_pages > 1) { lli_array[num_pages - 1].block_size = (app_virt_addr + data_size) & (~PAGE_MASK); @@ -1299,7 +1297,7 @@ static int sep_lock_user_pages(struct sep_device *sep, lli_array[count].block_size); } - /* set output params acording to the in_out flag */ + /* Set output params acording to the in_out flag */ if (in_out_flag == SEP_DRIVER_IN_FLAG) { *lli_array_ptr = lli_array; sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages = num_pages; @@ -1319,14 +1317,14 @@ static int sep_lock_user_pages(struct sep_device *sep, goto end_function; end_function_with_error3: - /* free lli array */ + /* Free lli array */ kfree(lli_array); end_function_with_error2: kfree(map_array); end_function_with_error1: - /* free page array */ + /* Free page array */ kfree(page_array); end_function: @@ -1352,15 +1350,15 @@ static u32 sep_calculate_lli_table_max_size(struct sep_device *sep, u32 *last_table_flag) { u32 counter; - /* table data size */ + /* Table data size */ u32 table_data_size = 0; - /* data size for the next table */ + /* Data size for the next table */ u32 next_table_data_size; *last_table_flag = 0; /* - * calculate the data in the out lli table till we fill the whole + * Calculate the data in the out lli table till we fill the whole * table or till the data has ended */ for (counter = 0; @@ -1369,20 +1367,19 @@ static u32 sep_calculate_lli_table_max_size(struct sep_device *sep, table_data_size += lli_in_array_ptr[counter].block_size; /* - * check if we reached the last entry, + * Check if we reached the last entry, * meaning this ia the last table to build, * and no need to check the block alignment */ if (counter == num_array_entries) { - /* set the last table flag */ + /* Set the last table flag */ *last_table_flag = 1; goto end_function; } /* - * calculate the data size of the next table. - * Stop if no entries left or - * if data size is more the DMA restriction + * Calculate the data size of the next table. + * Stop if no entries left or if data size is more the DMA restriction */ next_table_data_size = 0; for (; counter < num_array_entries; counter++) { @@ -1392,7 +1389,7 @@ static u32 sep_calculate_lli_table_max_size(struct sep_device *sep, } /* - * check if the next table data size is less then DMA rstriction. + * Check if the next table data size is less then DMA rstriction. * if it is - recalculate the current table size, so that the next * table data size will be adaquete for DMA */ @@ -1427,23 +1424,23 @@ static void sep_build_lli_table(struct sep_device *sep, u32 *num_table_entries_ptr, u32 table_data_size) { - /* current table data size */ + /* Current table data size */ u32 curr_table_data_size; - /* counter of lli array entry */ + /* Counter of lli array entry */ u32 array_counter; dev_dbg(&sep->pdev->dev, "sep_build_lli_table start\n"); - /* init currrent table data size and lli array entry counter */ + /* Init currrent table data size and lli array entry counter */ curr_table_data_size = 0; array_counter = 0; *num_table_entries_ptr = 1; dev_dbg(&sep->pdev->dev, "table_data_size is %x\n", table_data_size); - /* fill the table till table size reaches the needed amount */ + /* 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 */ + /* Update the number of entries in table */ (*num_table_entries_ptr)++; lli_table_ptr->bus_address = @@ -1461,24 +1458,24 @@ static void sep_build_lli_table(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "lli_table_ptr->block_size is %x\n", lli_table_ptr->block_size); - /* check for overflow of the table data */ + /* Check for overflow of the table data */ if (curr_table_data_size > table_data_size) { dev_dbg(&sep->pdev->dev, "curr_table_data_size too large\n"); - /* update the size of block in the table */ + /* Update the size of block in the table */ lli_table_ptr->block_size -= cpu_to_le32((curr_table_data_size - table_data_size)); - /* update the physical address in the lli array */ + /* Update the physical address in the lli array */ lli_array_ptr[array_counter].bus_address += cpu_to_le32(lli_table_ptr->block_size); - /* update the block size left in the lli array */ + /* 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 */ + /* Advance to the next entry in the lli_array */ array_counter++; dev_dbg(&sep->pdev->dev, @@ -1488,11 +1485,11 @@ static void sep_build_lli_table(struct sep_device *sep, "lli_table_ptr->block_size is %x\n", lli_table_ptr->block_size); - /* move to the next entry in table */ + /* Move to the next entry in table */ lli_table_ptr++; } - /* set the info entry to default */ + /* Set the info entry to default */ lli_table_ptr->bus_address = 0xffffffff; lli_table_ptr->block_size = 0; @@ -1502,7 +1499,7 @@ static void sep_build_lli_table(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "lli_table_ptr->block_size is %x\n", lli_table_ptr->block_size); - /* set the output parameter */ + /* Set the output parameter */ *num_processed_entries_ptr += array_counter; dev_dbg(&sep->pdev->dev, "num_processed_entries_ptr is %x\n", @@ -1578,7 +1575,7 @@ static void sep_debug_print_lli_tables(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "num_table_entries is %lu\n", num_table_entries); - /* print entries of the table (without info entry) */ + /* Print entries of the table (without info entry) */ for (entries_count = 0; entries_count < num_table_entries; entries_count++, lli_table_ptr++) { @@ -1591,7 +1588,7 @@ static void sep_debug_print_lli_tables(struct sep_device *sep, (unsigned long)lli_table_ptr->bus_address, lli_table_ptr->block_size); } - /* point to the info entry */ + /* Point to the info entry */ lli_table_ptr--; dev_dbg(&sep->pdev->dev, @@ -1642,7 +1639,7 @@ static void sep_prepare_empty_lli_table(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "sep_prepare_empty_lli_table start\n"); - /* find the area for new table */ + /* Find the area for new table */ lli_table_ptr = (struct sep_lli_entry *)(sep->shared_addr + SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES + @@ -1656,18 +1653,18 @@ static void sep_prepare_empty_lli_table(struct sep_device *sep, lli_table_ptr->bus_address = 0xFFFFFFFF; lli_table_ptr->block_size = 0; - /* set the output parameter value */ + /* Set the output parameter value */ *lli_table_addr_ptr = sep->shared_bus + SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES + sep->num_lli_tables_created * sizeof(struct sep_lli_entry) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; - /* set the num of entries and table data size for empty table */ + /* Set the num of entries and table data size for empty table */ *num_entries_ptr = 2; *table_data_size_ptr = 0; - /* update the number of created tables */ + /* Update the number of created tables */ sep->num_lli_tables_created++; dev_dbg(&sep->pdev->dev, "sep_prepare_empty_lli_table start\n"); @@ -1686,7 +1683,7 @@ static void sep_prepare_empty_lli_table(struct sep_device *sep, * * This function prepares only input DMA table for synhronic symmetric * operations (HASH) - * Note that all bus addresses that are passed to the sep + * Note that all bus addresses that are passed to the SEP * are in 32 bit format; the SEP is a 32 bit device */ static int sep_prepare_input_dma_table(struct sep_device *sep, @@ -1699,54 +1696,54 @@ static int sep_prepare_input_dma_table(struct sep_device *sep, bool is_kva) { int error = 0; - /* pointer to the info entry of the table - the last entry */ + /* Pointer to the info entry of the table - the last entry */ struct sep_lli_entry *info_entry_ptr; - /* array of pointers to page */ + /* Array of pointers to page */ struct sep_lli_entry *lli_array_ptr; - /* points to the first entry to be processed in the lli_in_array */ + /* Points to the first entry to be processed in the lli_in_array */ u32 current_entry = 0; - /* num entries in the virtual buffer */ + /* Num entries in the virtual buffer */ u32 sep_lli_entries = 0; - /* lli table pointer */ + /* Lli table pointer */ struct sep_lli_entry *in_lli_table_ptr; - /* the total data in one table */ + /* The total data in one table */ u32 table_data_size = 0; - /* flag for last table */ + /* Flag for last table */ u32 last_table_flag = 0; - /* number of entries in lli table */ + /* Number of entries in lli table */ u32 num_entries_in_table = 0; - /* next table address */ + /* Next table address */ u32 lli_table_alloc_addr = 0; dev_dbg(&sep->pdev->dev, "sep_prepare_input_dma_table start\n"); dev_dbg(&sep->pdev->dev, "data_size is %x\n", data_size); dev_dbg(&sep->pdev->dev, "block_size is %x\n", block_size); - /* initialize the pages pointers */ + /* Initialize the pages pointers */ sep->dma_res_arr[sep->nr_dcb_creat].in_page_array = 0; sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages = 0; - /* set the kernel address for first table to be allocated */ + /* Set the kernel address for first table to be allocated */ lli_table_alloc_addr = (u32)(sep->shared_addr + SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES + sep->num_lli_tables_created * sizeof(struct sep_lli_entry) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); if (data_size == 0) { - /* special case - create meptu table - 2 entries, zero data */ + /* Special case - create meptu table - 2 entries, zero data */ sep_prepare_empty_lli_table(sep, lli_table_ptr, num_entries_ptr, table_data_size_ptr); goto update_dcb_counter; } - /* check if the pages are in Kernel Virtual Address layout */ + /* Check if the pages are in Kernel Virtual Address layout */ if (is_kva == true) - /* lock the pages in the kernel */ + /* Lock the pages in the kernel */ error = sep_lock_kernel_pages(sep, app_virt_addr, data_size, &lli_array_ptr, SEP_DRIVER_IN_FLAG); else /* - * lock the pages of the user buffer + * Lock the pages of the user buffer * and translate them to pages */ error = sep_lock_user_pages(sep, app_virt_addr, @@ -1763,10 +1760,10 @@ static int sep_prepare_input_dma_table(struct sep_device *sep, sep_lli_entries = sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages; - /* loop till all the entries in in array are not processed */ + /* Loop till all the entries in in array are not processed */ while (current_entry < sep_lli_entries) { - /* set the new input and output tables */ + /* Set the new input and output tables */ in_lli_table_ptr = (struct sep_lli_entry *)lli_table_alloc_addr; @@ -1783,17 +1780,17 @@ static int sep_prepare_input_dma_table(struct sep_device *sep, } - /* update the number of created tables */ + /* Update the number of created tables */ sep->num_lli_tables_created++; - /* calculate the maximum size of data for input table */ + /* Calculate the maximum size of data for input table */ table_data_size = sep_calculate_lli_table_max_size(sep, &lli_array_ptr[current_entry], (sep_lli_entries - current_entry), &last_table_flag); /* - * if this is not the last table - + * If this is not the last table - * then allign it to the block size */ if (!last_table_flag) @@ -1803,14 +1800,14 @@ static int sep_prepare_input_dma_table(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "output table_data_size is %x\n", table_data_size); - /* construct input lli table */ + /* Construct input lli table */ sep_build_lli_table(sep, &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 */ + /* Set the output parameters to physical addresses */ *lli_table_ptr = sep_shared_area_virt_to_bus(sep, in_lli_table_ptr); *num_entries_ptr = num_entries_in_table; @@ -1821,7 +1818,7 @@ static int sep_prepare_input_dma_table(struct sep_device *sep, (unsigned long)*lli_table_ptr); } else { - /* update the info entry of the previous in table */ + /* Update the info entry of the previous in table */ info_entry_ptr->bus_address = sep_shared_area_virt_to_bus(sep, in_lli_table_ptr); @@ -1829,23 +1826,23 @@ static int sep_prepare_input_dma_table(struct sep_device *sep, ((num_entries_in_table) << 24) | (table_data_size); } - /* save the pointer to the info entry of the current tables */ + /* 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 */ + /* Print input tables */ sep_debug_print_lli_tables(sep, (struct sep_lli_entry *) sep_shared_area_bus_to_virt(sep, *lli_table_ptr), *num_entries_ptr, *table_data_size_ptr); - /* the array of the pages */ + /* The array of the pages */ kfree(lli_array_ptr); update_dcb_counter: - /* update dcb counter */ + /* Update DCB counter */ sep->nr_dcb_creat++; goto end_function; end_function_error: - /* free all the allocated resources */ + /* Free all the allocated resources */ kfree(sep->dma_res_arr[sep->nr_dcb_creat].in_map_array); kfree(lli_array_ptr); kfree(sep->dma_res_arr[sep->nr_dcb_creat].in_page_array); @@ -1857,7 +1854,7 @@ end_function: } /** * sep_construct_dma_tables_from_lli - prepare AES/DES mappings - * @sep: pointer to struct_sep + * @sep: pointer to struct sep_device * @lli_in_array: * @sep_in_lli_entries: * @lli_out_array: @@ -1869,10 +1866,10 @@ end_function: * @out_num_entries_ptr * @table_data_size_ptr * - * This function creates the input and output dma tables for + * This function creates the input and output DMA tables for * symmetric operations (AES/DES) according to the block * size from LLI arays - * Note that all bus addresses that are passed to the sep + * Note that all bus addresses that are passed to the SEP * are in 32 bit format; the SEP is a 32 bit device */ static int sep_construct_dma_tables_from_lli( @@ -1888,56 +1885,56 @@ static int sep_construct_dma_tables_from_lli( u32 *out_num_entries_ptr, u32 *table_data_size_ptr) { - /* points to the area where next lli table can be allocated */ + /* Points to the area where next lli table can be allocated */ u32 lli_table_alloc_addr = 0; - /* input lli table */ + /* Input lli table */ struct sep_lli_entry *in_lli_table_ptr = 0; - /* output lli table */ + /* Output lli table */ struct sep_lli_entry *out_lli_table_ptr = 0; - /* pointer to the info entry of the table - the last entry */ + /* Pointer to the info entry of the table - the last entry */ struct sep_lli_entry *info_in_entry_ptr = 0; - /* pointer to the info entry of the table - the last entry */ + /* Pointer to the info entry of the table - the last entry */ struct sep_lli_entry *info_out_entry_ptr = 0; - /* points to the first entry to be processed in the lli_in_array */ + /* Points to the first entry to be processed in the lli_in_array */ u32 current_in_entry = 0; - /* points to the first entry to be processed in the lli_out_array */ + /* Points to the first entry to be processed in the lli_out_array */ u32 current_out_entry = 0; - /* max size of the input table */ + /* Max size of the input table */ u32 in_table_data_size = 0; - /* max size of the output table */ + /* Max size of the output table */ u32 out_table_data_size = 0; - /* flag te signifies if this is the last tables build */ + /* Flag te signifies if this is the last tables build */ u32 last_table_flag = 0; - /* the data size that should be in table */ + /* The data size that should be in table */ u32 table_data_size = 0; - /* number of etnries in the input table */ + /* Number of etnries in the input table */ u32 num_entries_in_table = 0; - /* number of etnries in the output table */ + /* Number of etnries in the output table */ u32 num_entries_out_table = 0; dev_dbg(&sep->pdev->dev, "sep_construct_dma_tables_from_lli start\n"); - /* initiate to point after the message area */ + /* Initiate to point after the message area */ lli_table_alloc_addr = (u32)(sep->shared_addr + SYNCHRONIC_DMA_TABLES_AREA_OFFSET_BYTES + (sep->num_lli_tables_created * (sizeof(struct sep_lli_entry) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP))); - /* loop till all the entries in in array are not processed */ + /* 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 */ + /* Set the new input and output tables */ in_lli_table_ptr = (struct sep_lli_entry *)lli_table_alloc_addr; lli_table_alloc_addr += sizeof(struct sep_lli_entry) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; - /* set the first output tables */ + /* Set the first output tables */ out_lli_table_ptr = (struct sep_lli_entry *)lli_table_alloc_addr; - /* check if the DMA table area limit was overrun */ + /* Check if the DMA table area limit was overrun */ if ((lli_table_alloc_addr + sizeof(struct sep_lli_entry) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP) > ((u32)sep->shared_addr + @@ -1948,20 +1945,20 @@ static int sep_construct_dma_tables_from_lli( return -ENOMEM; } - /* update the number of the lli tables created */ + /* Update the number of the lli tables created */ sep->num_lli_tables_created += 2; lli_table_alloc_addr += sizeof(struct sep_lli_entry) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; - /* calculate the maximum size of data for input table */ + /* Calculate the maximum size of data for input table */ in_table_data_size = sep_calculate_lli_table_max_size(sep, &lli_in_array[current_in_entry], (sep_in_lli_entries - current_in_entry), &last_table_flag); - /* calculate the maximum size of data for output table */ + /* Calculate the maximum size of data for output table */ out_table_data_size = sep_calculate_lli_table_max_size(sep, &lli_out_array[current_out_entry], @@ -1980,7 +1977,7 @@ static int sep_construct_dma_tables_from_lli( if (!last_table_flag) { /* - * if this is not the last table, + * If this is not the last table, * then must check where the data is smallest * and then align it to the block size */ @@ -1988,7 +1985,7 @@ static int sep_construct_dma_tables_from_lli( table_data_size = out_table_data_size; /* - * now calculate the table size so that + * Now calculate the table size so that * it will be module block size */ table_data_size = (table_data_size / block_size) * @@ -1998,23 +1995,23 @@ static int sep_construct_dma_tables_from_lli( dev_dbg(&sep->pdev->dev, "table_data_size is %x\n", table_data_size); - /* construct input lli table */ + /* Construct input lli table */ sep_build_lli_table(sep, &lli_in_array[current_in_entry], in_lli_table_ptr, ¤t_in_entry, &num_entries_in_table, table_data_size); - /* construct output lli table */ + /* Construct output lli table */ sep_build_lli_table(sep, &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 entry is null - this is the first table built */ if (info_in_entry_ptr == 0) { - /* set the output parameters to physical addresses */ + /* Set the output parameters to physical addresses */ *lli_table_in_ptr = sep_shared_area_virt_to_bus(sep, in_lli_table_ptr); @@ -2034,7 +2031,7 @@ static int sep_construct_dma_tables_from_lli( "output lli_table_out_ptr is %08lx\n", (unsigned long)*lli_table_out_ptr); } else { - /* update the info entry of the previous in table */ + /* Update the info entry of the previous in table */ info_in_entry_ptr->bus_address = sep_shared_area_virt_to_bus(sep, in_lli_table_ptr); @@ -2043,7 +2040,7 @@ static int sep_construct_dma_tables_from_lli( ((num_entries_in_table) << 24) | (table_data_size); - /* update the info entry of the previous in table */ + /* Update the info entry of the previous in table */ info_out_entry_ptr->bus_address = sep_shared_area_virt_to_bus(sep, out_lli_table_ptr); @@ -2063,7 +2060,7 @@ static int sep_construct_dma_tables_from_lli( info_out_entry_ptr->block_size); } - /* save the pointer to the info entry of the current tables */ + /* 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 + @@ -2080,14 +2077,14 @@ static int sep_construct_dma_tables_from_lli( (unsigned long)info_out_entry_ptr); } - /* print input tables */ + /* Print input tables */ sep_debug_print_lli_tables(sep, (struct sep_lli_entry *) sep_shared_area_bus_to_virt(sep, *lli_table_in_ptr), *in_num_entries_ptr, *table_data_size_ptr); - /* print output tables */ + /* Print output tables */ sep_debug_print_lli_tables(sep, (struct sep_lli_entry *) sep_shared_area_bus_to_virt(sep, *lli_table_out_ptr), @@ -2114,7 +2111,7 @@ static int sep_construct_dma_tables_from_lli( * This function builds input and output DMA tables for synhronic * symmetric operations (AES, DES, HASH). It also checks that each table * is of the modular block size - * Note that all bus addresses that are passed to the sep + * Note that all bus addresses that are passed to the SEP * are in 32 bit format; the SEP is a 32 bit device */ static int sep_prepare_input_output_dma_table(struct sep_device *sep, @@ -2131,15 +2128,15 @@ static int sep_prepare_input_output_dma_table(struct sep_device *sep, { int error = 0; - /* array of pointers of page */ + /* Array of pointers of page */ struct sep_lli_entry *lli_in_array; - /* array of pointers of page */ + /* Array of pointers of page */ struct sep_lli_entry *lli_out_array; dev_dbg(&sep->pdev->dev, "sep_prepare_input_output_dma_table start\n"); if (data_size == 0) { - /* prepare empty table for input and output */ + /* Prepare empty table for input and output */ sep_prepare_empty_lli_table(sep, lli_table_in_ptr, in_num_entries_ptr, table_data_size_ptr); @@ -2149,11 +2146,11 @@ static int sep_prepare_input_output_dma_table(struct sep_device *sep, goto update_dcb_counter; } - /* initialize the pages pointers */ + /* Initialize the pages pointers */ sep->dma_res_arr[sep->nr_dcb_creat].in_page_array = 0; sep->dma_res_arr[sep->nr_dcb_creat].out_page_array = 0; - /* lock the pages of the buffer and translate them to pages */ + /* Lock the pages of the buffer and translate them to pages */ if (is_kva == true) { error = sep_lock_kernel_pages(sep, app_virt_in_addr, data_size, &lli_in_array, SEP_DRIVER_IN_FLAG); @@ -2200,7 +2197,7 @@ static int sep_prepare_input_output_dma_table(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "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 */ + /* Call the fucntion that creates table from the lli arrays */ error = sep_construct_dma_tables_from_lli(sep, lli_in_array, sep->dma_res_arr[sep->nr_dcb_creat].in_num_pages, lli_out_array, @@ -2218,9 +2215,9 @@ static int sep_prepare_input_output_dma_table(struct sep_device *sep, kfree(lli_in_array); update_dcb_counter: - /* update dcb counter */ + /* Update DCB counter */ sep->nr_dcb_creat++; - /* fall through - free the lli entry arrays */ + /* Fall through - free the lli entry arrays */ dev_dbg(&sep->pdev->dev, "in_num_entries_ptr is %08x\n", *in_num_entries_ptr); dev_dbg(&sep->pdev->dev, "out_num_entries_ptr is %08x\n", @@ -2259,10 +2256,10 @@ end_function: * @isapplet: bool; to indicate external app * @is_kva: bool; kernel buffer; only used for kernel crypto module * - * This function prepares the linked dma tables and puts the - * address for the linked list of tables inta a dcb (data control - * block) the address of which is known by the sep hardware - * Note that all bus addresses that are passed to the sep + * This function prepares the linked DMA tables and puts the + * address for the linked list of tables inta a DCB (data control + * block) the address of which is known by the SEP hardware + * Note that all bus addresses that are passed to the SEP * are in 32 bit format; the SEP is a 32 bit device */ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, @@ -2275,36 +2272,36 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, bool is_kva) { int error = 0; - /* size of tail */ + /* Size of tail */ u32 tail_size = 0; - /* address of the created dcb table */ + /* Address of the created DCB table */ struct sep_dcblock *dcb_table_ptr = 0; - /* the physical address of the first input DMA table */ + /* The physical address of the first input DMA table */ dma_addr_t in_first_mlli_address = 0; - /* number of entries in the first input DMA table */ + /* Number of entries in the first input DMA table */ u32 in_first_num_entries = 0; - /* the physical address of the first output DMA table */ + /* The physical address of the first output DMA table */ dma_addr_t out_first_mlli_address = 0; - /* number of entries in the first output DMA table */ + /* Number of entries in the first output DMA table */ u32 out_first_num_entries = 0; - /* data in the first input/output table */ + /* Data in the first input/output table */ u32 first_data_size = 0; dev_dbg(&sep->pdev->dev, "prepare_input_output_dma_table_in_dcb start\n"); if (sep->nr_dcb_creat == SEP_MAX_NUM_SYNC_DMA_OPS) { - /* No more DCBS to allocate */ - dev_warn(&sep->pdev->dev, "no more dcb's available\n"); + /* No more DCBs to allocate */ + dev_warn(&sep->pdev->dev, "no more DCBs available\n"); error = -ENOSPC; goto end_function; } - /* allocate new DCB */ + /* Allocate new DCB */ dcb_table_ptr = (struct sep_dcblock *)(sep->shared_addr + SEP_DRIVER_SYSTEM_DCB_MEMORY_OFFSET_IN_BYTES + (sep->nr_dcb_creat * sizeof(struct sep_dcblock))); - /* set the default values in the dcb */ + /* Set the default values in the DCB */ dcb_table_ptr->input_mlli_address = 0; dcb_table_ptr->input_mlli_num_entries = 0; dcb_table_ptr->input_mlli_data_size = 0; @@ -2324,7 +2321,7 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, } if (tail_block_size) /* - * case the tail size should be + * Case the tail size should be * bigger than the real block size */ tail_size = tail_block_size + @@ -2332,7 +2329,7 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, tail_block_size) % block_size); } - /* check if there is enough data for dma operation */ + /* Check if there is enough data for DMA operation */ if (data_in_size < SEP_DRIVER_MIN_DATA_SIZE_PER_TABLE) { if (is_kva == true) { memcpy(dcb_table_ptr->tail_data, @@ -2348,7 +2345,7 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, dcb_table_ptr->tail_data_size = data_in_size; - /* set the output user-space address for mem2mem op */ + /* Set the output user-space address for mem2mem op */ if (app_out_address) dcb_table_ptr->out_vr_tail_pt = (u32)app_out_address; @@ -2367,7 +2364,7 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, (void *)(app_in_address + data_in_size - tail_size), tail_size); } else { - /* we have tail data - copy it to dcb */ + /* We have tail data - copy it to DCB */ if (copy_from_user(dcb_table_ptr->tail_data, (void *)(app_in_address + data_in_size - tail_size), tail_size)) { @@ -2393,9 +2390,9 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, data_in_size = (data_in_size - tail_size); } } - /* check if we need to build only input table or input/output */ + /* Check if we need to build only input table or input/output */ if (app_out_address) { - /* prepare input/output tables */ + /* Prepare input/output tables */ error = sep_prepare_input_output_dma_table(sep, app_in_address, app_out_address, @@ -2408,7 +2405,7 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, &first_data_size, is_kva); } else { - /* prepare input tables */ + /* Prepare input tables */ error = sep_prepare_input_dma_table(sep, app_in_address, data_in_size, @@ -2420,11 +2417,11 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep, } if (error) { - dev_warn(&sep->pdev->dev, "prepare dma table call failed from prepare dcb call\n"); + dev_warn(&sep->pdev->dev, "prepare DMA table call failed from prepare DCB call\n"); goto end_function; } - /* set the dcb values */ + /* Set the DCB values */ dcb_table_ptr->input_mlli_address = in_first_mlli_address; dcb_table_ptr->input_mlli_num_entries = in_first_num_entries; dcb_table_ptr->input_mlli_data_size = first_data_size; @@ -2441,7 +2438,7 @@ end_function: /** - * sep_create_sync_dma_tables_handler - create sync dma tables + * sep_create_sync_dma_tables_handler - create sync DMA tables * @sep: pointer to struct sep_device * @arg: pointer to struct bld_syn_tab_struct * @@ -2454,7 +2451,7 @@ static int sep_create_sync_dma_tables_handler(struct sep_device *sep, { int error = 0; - /* command arguments */ + /* Command arguments */ struct bld_syn_tab_struct command_args; dev_dbg(&sep->pdev->dev, @@ -2475,7 +2472,7 @@ static int sep_create_sync_dma_tables_handler(struct sep_device *sep, dev_dbg(&sep->pdev->dev, "block_size is %u\n", command_args.block_size); - /* validate user parameters */ + /* Validate user parameters */ if (!command_args.app_in_address) { error = -EINVAL; goto end_function; @@ -2501,7 +2498,7 @@ end_function: * @isapplet: indicates external application (used for kernel access) * @is_kva: indicates kernel addresses (only used for kernel crypto) * - * This function frees the dma tables and dcb block + * This function frees the DMA tables and DCB */ static int sep_free_dma_tables_and_dcb(struct sep_device *sep, bool isapplet, bool is_kva) @@ -2514,12 +2511,12 @@ static int sep_free_dma_tables_and_dcb(struct sep_device *sep, bool isapplet, dev_dbg(&sep->pdev->dev, "sep_free_dma_tables_and_dcb start\n"); if (isapplet == true) { - /* set pointer to first dcb table */ + /* Set pointer to first DCB table */ dcb_table_ptr = (struct sep_dcblock *) (sep->shared_addr + SEP_DRIVER_SYSTEM_DCB_MEMORY_OFFSET_IN_BYTES); - /* go over each dcb and see if tail pointer must be updated */ + /* Go over each DCB and see if tail pointer must be updated */ for (i = 0; i < sep->nr_dcb_creat; i++, dcb_table_ptr++) { if (dcb_table_ptr->out_vr_tail_pt) { if (is_kva == true) { @@ -2533,14 +2530,14 @@ static int sep_free_dma_tables_and_dcb(struct sep_device *sep, bool isapplet, dcb_table_ptr->tail_data_size); } if (error_temp) { - /* release the dma resource */ + /* Release the DMA resource */ error = -EFAULT; break; } } } } - /* free the output pages, if any */ + /* Free the output pages, if any */ sep_free_dma_table_data_handler(sep); dev_dbg(&sep->pdev->dev, "sep_free_dma_tables_and_dcb end\n"); @@ -2579,7 +2576,7 @@ static int sep_get_static_pool_addr_handler(struct sep_device *sep, (u32)static_pool_addr[1], (u32)command_args.static_virt_address); - /* send the parameters to user application */ + /* Send the parameters to user application */ if (copy_to_user((void __user *) arg, &command_args, sizeof(struct stat_pool_addr_struct))) return -EFAULT; @@ -2600,14 +2597,14 @@ static int sep_start_handler(struct sep_device *sep) dev_dbg(&sep->pdev->dev, "sep_start_handler start\n"); - /* wait in polling for message from SEP */ + /* Wait in polling for message from SEP */ do reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); while (!reg_val); - /* check the value */ + /* Check the value */ if (reg_val == 0x1) - /* fatal error - read error status from GPRO */ + /* Fatal error - read error status from GPRO */ error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); dev_dbg(&sep->pdev->dev, "sep_start_handler end\n"); return error; @@ -2619,7 +2616,7 @@ static int sep_start_handler(struct sep_device *sep) * @length: buffer size * * This function performs a checksum for messages that are sent - * to the sep + * to the SEP. */ static u32 sep_check_sum_calc(u8 *data, u32 length) { @@ -2651,7 +2648,7 @@ static u32 sep_check_sum_calc(u8 *data, u32 length) * Handles the request for SEP initialization * Note that this will go away for Medfield once the SCU * SEP initialization is complete - * Also note that the message to the sep has components + * Also note that the message to the SEP has components * from user space as well as components written by the driver * This is becuase the portions of the message that pertain to * physical addresses must be set by the driver after the message @@ -2670,7 +2667,7 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) dev_dbg(&sep->pdev->dev, "sep_init_handler start\n"); - /* make sure that we have not initialized already */ + /* Make sure that we have not initialized already */ reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); if (reg_val != 0x2) { @@ -2679,13 +2676,13 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) goto end_function; } - /* only root can initialize */ + /* Only root can initialize */ if (!capable(CAP_SYS_ADMIN)) { error = -EACCES; goto end_function; } - /* copy in the parameters */ + /* Copy in the parameters */ error = copy_from_user(&command_args, (void __user *)arg, sizeof(struct init_struct)); @@ -2694,14 +2691,14 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) goto end_function; } - /* validate parameters */ + /* Validate parameters */ if (!command_args.message_addr || !command_args.sep_sram_addr || command_args.message_size_in_words > 14) { error = -EINVAL; goto end_function; } - /* copy in the sep init message */ + /* Copy in the SEP init message */ addr_hold = (unsigned long)command_args.message_addr; error = copy_from_user(message_buff, (void __user *)addr_hold, @@ -2712,16 +2709,16 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) goto end_function; } - /* load resident, cache, and extapp firmware */ + /* Load resident, cache, and extapp firmware */ error = sep_load_firmware(sep); if (error) { dev_warn(&sep->pdev->dev, - "init; copy sep init message failed %x\n", error); + "init; copy SEP init message failed %x\n", error); goto end_function; } - /* compute the base address */ + /* Compute the base address */ new_base_addr = sep->shared_bus; if (sep->resident_bus < new_base_addr) @@ -2733,7 +2730,7 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) if (sep->dcache_bus < new_base_addr) new_base_addr = sep->dcache_bus; - /* put physical addresses in sep message */ + /* Put physical addresses in SEP message */ message_buff[3] = (u32)new_base_addr; message_buff[4] = (u32)sep->shared_bus; message_buff[6] = (u32)sep->resident_bus; @@ -2745,16 +2742,16 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) sep_check_sum_calc((u8 *)message_buff, command_args.message_size_in_words*sizeof(u32)); - /* debug print of message */ + /* Debug print of message */ for (counter = 0; counter < command_args.message_size_in_words; counter++) - dev_dbg(&sep->pdev->dev, "init; sep message word %d is %x\n", + dev_dbg(&sep->pdev->dev, "init; SEP message word %d is %x\n", counter, message_buff[counter]); - /* tell the sep the sram address */ + /* Tell the SEP the sram address */ sep_write_reg(sep, HW_SRAM_ADDR_REG_ADDR, command_args.sep_sram_addr); - /* push the message to the sep */ + /* Push the message to the SEP */ for (counter = 0; counter < command_args.message_size_in_words; counter++) { sep_write_reg(sep, HW_SRAM_DATA_REG_ADDR, @@ -2762,10 +2759,10 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) sep_wait_sram_write(sep); } - /* signal sep that message is ready and to init */ + /* Signal SEP that message is ready and to init */ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1); - /* wait for acknowledge */ + /* Wait for acknowledge */ dev_dbg(&sep->pdev->dev, "init; waiting for msg response\n"); do @@ -2782,10 +2779,10 @@ static int sep_init_handler(struct sep_device *sep, unsigned long arg) } dev_dbg(&sep->pdev->dev, "init; end CC INIT, reg_val is %x\n", reg_val); - /* signal sep to zero the GPR3 */ + /* Signal SEP to zero the GPR3 */ sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x10); - /* wait for response */ + /* Wait for response */ dev_dbg(&sep->pdev->dev, "init; waiting for zero set response\n"); do @@ -2807,25 +2804,25 @@ static int sep_end_transaction_handler(struct sep_device *sep) { dev_dbg(&sep->pdev->dev, "sep_end_transaction_handler start\n"); - /* clear the data pool pointers Token */ + /* Clear the data pool pointers Token */ memset((void *)(sep->shared_addr + SEP_DRIVER_DATA_POOL_ALLOCATION_OFFSET_IN_BYTES), 0, sep->num_of_data_allocations*2*sizeof(u32)); - /* check that all the dma resources were freed */ + /* Check that all the DMA resources were freed */ sep_free_dma_table_data_handler(sep); clear_bit(SEP_MMAP_LOCK_BIT, &sep->in_use_flags); /* - * we are now through with the transaction. Let's + * We are now through with the transaction. Let's * allow other processes who have the device open * to perform transactions */ mutex_lock(&sep->sep_mutex); sep->pid_doing_transaction = 0; mutex_unlock(&sep->sep_mutex); - /* raise event for stuck contextes */ + /* Raise event for stuck contextes */ wake_up(&sep->event); dev_dbg(&sep->pdev->dev, "waking up event\n"); @@ -2844,9 +2841,8 @@ static int sep_end_transaction_handler(struct sep_device *sep) */ static int sep_prepare_dcb_handler(struct sep_device *sep, unsigned long arg) { - /* error */ int error; - /* command arguments */ + /* Command arguments */ struct build_dcb_struct command_args; dev_dbg(&sep->pdev->dev, "sep_prepare_dcb_handler start\n"); @@ -2912,24 +2908,24 @@ static int sep_rar_prepare_output_msg_handler(struct sep_device *sep, unsigned long arg) { int error = 0; - /* command args */ + /* Command args */ struct rar_hndl_to_bus_struct command_args; struct RAR_buffer rar_buf; - /* bus address */ + /* Bus address */ dma_addr_t rar_bus = 0; - /* holds the RAR address in the system memory offset */ + /* Holds the RAR address in the system memory offset */ u32 *rar_addr; dev_dbg(&sep->pdev->dev, "sep_rar_prepare_output_msg_handler start\n"); - /* copy the data */ + /* Copy the data */ if (copy_from_user(&command_args, (void __user *)arg, sizeof(command_args))) { error = -EFAULT; goto end_function; } - /* call to translation function only if user handle is not NULL */ + /* Call to translation function only if user handle is not NULL */ if (command_args.rar_handle) { memset(&rar_buf, 0, sizeof(rar_buf)); rar_buf.info.handle = (u32)command_args.rar_handle; @@ -2943,11 +2939,11 @@ static int sep_rar_prepare_output_msg_handler(struct sep_device *sep, } dev_dbg(&sep->pdev->dev, "rar msg; rar_addr_bus = %x\n", (u32)rar_bus); - /* set value in the SYSTEM MEMORY offset */ + /* Set value in the SYSTEM MEMORY offset */ rar_addr = (u32 *)(sep->shared_addr + SEP_DRIVER_SYSTEM_RAR_MEMORY_OFFSET_IN_BYTES); - /* copy the physical address to the System Area for the sep */ + /* Copy the physical address to the System Area for the SEP */ rar_addr[0] = SEP_RAR_VAL_TOKEN; rar_addr[1] = rar_bus; @@ -2961,19 +2957,19 @@ end_function: * @sep: pointer to struct sep_device * @arg: pointer to user parameters * - * This function tells the sep where the extapp is located + * This function tells the SEP where the extapp is located */ static int sep_realloc_ext_cache_handler(struct sep_device *sep, unsigned long arg) { - /* holds the new ext cache address in the system memory offset */ + /* Holds the new ext cache address in the system memory offset */ u32 *system_addr; - /* set value in the SYSTEM MEMORY offset */ + /* Set value in the SYSTEM MEMORY offset */ system_addr = (u32 *)(sep->shared_addr + SEP_DRIVER_SYSTEM_EXT_CACHE_ADDR_OFFSET_IN_BYTES); - /* copy the physical address to the System Area for the sep */ + /* Copy the physical address to the System Area for the SEP */ system_addr[0] = SEP_EXT_CACHE_ADDR_VAL_TOKEN; dev_dbg(&sep->pdev->dev, "ext cache init; system addr 0 is %x\n", system_addr[0]); @@ -3025,7 +3021,7 @@ static long sep_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) dev_dbg(&sep->pdev->dev, "SEP_IOCFREEDCB is %x\n", SEP_IOCFREEDCB); - /* make sure we own this device */ + /* Make sure we own this device */ mutex_lock(&sep->sep_mutex); if ((current->pid != sep->pid_doing_transaction) && (sep->pid_doing_transaction != 0)) { @@ -3037,48 +3033,48 @@ static long sep_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) mutex_unlock(&sep->sep_mutex); - /* check that the command is for sep device */ + /* Check that the command is for SEP device */ if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) { error = -ENOTTY; goto end_function; } - /* lock to prevent the daemon to interfere with operation */ + /* Lock to prevent the daemon to interfere with operation */ mutex_lock(&sep->ioctl_mutex); switch (cmd) { case SEP_IOCSENDSEPCOMMAND: - /* send command to SEP */ + /* Send command to SEP */ error = sep_send_command_handler(sep); break; case SEP_IOCALLOCDATAPOLL: - /* allocate data pool */ + /* Allocate data pool */ error = sep_allocate_data_pool_memory_handler(sep, arg); break; case SEP_IOCCREATESYMDMATABLE: - /* create dma table for synhronic operation */ + /* Create DMA table for synhronic operation */ error = sep_create_sync_dma_tables_handler(sep, arg); break; case SEP_IOCFREEDMATABLEDATA: - /* free the pages */ + /* Free the pages */ error = sep_free_dma_table_data_handler(sep); break; case SEP_IOCSEPSTART: - /* start command to sep */ - if (sep->pdev->revision == 0) /* only for old chip */ + /* Start command to SEP */ + if (sep->pdev->revision == 0) /* Only for old chip */ error = sep_start_handler(sep); else - error = -EPERM; /* not permitted on new chip */ + error = -EPERM; /* Not permitted on new chip */ break; case SEP_IOCSEPINIT: - /* init command to sep */ - if (sep->pdev->revision == 0) /* only for old chip */ + /* Init command to SEP */ + if (sep->pdev->revision == 0) /* Only for old chip */ error = sep_init_handler(sep, arg); else - error = -EPERM; /* not permitted on new chip */ + error = -EPERM; /* Not permitted on new chip */ break; case SEP_IOCGETSTATICPOOLADDR: - /* get the physical and virtual addresses of the static pool */ + /* Get the physical and virtual addresses of the static pool */ error = sep_get_static_pool_addr_handler(sep, arg); break; case SEP_IOCENDTRANSACTION: @@ -3087,10 +3083,10 @@ static long sep_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) case SEP_IOCREALLOCEXTCACHE: if (sep->mrst) error = -ENODEV; - if (sep->pdev->revision == 0) /* only for old chip */ + if (sep->pdev->revision == 0) /* Only for old chip */ error = sep_realloc_ext_cache_handler(sep, arg); else - error = -EPERM; /* not permitted on new chip */ + error = -EPERM; /* Not permitted on new chip */ break; case SEP_IOCRARPREPAREMESSAGE: error = sep_rar_prepare_output_msg_handler(sep, arg); @@ -3123,20 +3119,19 @@ end_function: */ static long sep_singleton_ioctl(struct file *filp, u32 cmd, unsigned long arg) { - /* error */ long error = 0; struct sep_device *sep = filp->private_data; dev_dbg(&sep->pdev->dev, "singleton_ioctl start\n"); dev_dbg(&sep->pdev->dev, "cmd is %x\n", cmd); - /* check that the command is for sep device */ + /* Check that the command is for the SEP device */ if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) { error = -ENOTTY; goto end_function; } - /* make sure we own this device */ + /* Make sure we own this device */ mutex_lock(&sep->sep_mutex); if ((current->pid != sep->pid_doing_transaction) && (sep->pid_doing_transaction != 0)) { @@ -3182,23 +3177,23 @@ static long sep_request_daemon_ioctl(struct file *filp, u32 cmd, dev_dbg(&sep->pdev->dev, "daemon ioctl: start\n"); dev_dbg(&sep->pdev->dev, "daemon ioctl: cmd is %x\n", cmd); - /* check that the command is for sep device */ + /* Check that the command is for SEP device */ if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) { error = -ENOTTY; goto end_function; } - /* only one process can access ioctl at any given time */ + /* Only one process can access ioctl at any given time */ mutex_lock(&sep->ioctl_mutex); switch (cmd) { case SEP_IOCSENDSEPRPLYCOMMAND: - /* send reply command to SEP */ + /* Send reply command to SEP */ error = sep_req_daemon_send_reply_command_handler(sep); break; case SEP_IOCENDTRANSACTION: /* - * end req daemon transaction, do nothing + * End req daemon transaction, do nothing * will be removed upon update in middleware * API library */ @@ -3217,7 +3212,7 @@ end_function: } /** - * sep_inthandler - Interrupt Handler + * sep_inthandler - interrupt handler * @irq: interrupt * @dev_id: device id */ @@ -3228,12 +3223,12 @@ static irqreturn_t sep_inthandler(int irq, void *dev_id) u32 reg_val, reg_val2 = 0; struct sep_device *sep = dev_id; - /* read the IRR register to check if this is SEP interrupt */ + /* Read the IRR register to check if this is SEP interrupt */ reg_val = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR); dev_dbg(&sep->pdev->dev, "SEP Interrupt - reg is %08x\n", reg_val); if (reg_val & (0x1 << 13)) { - /* lock and update the counter of reply messages */ + /* Lock and update the counter of reply messages */ spin_lock_irqsave(&sep->snd_rply_lck, lck_flags); sep->reply_ct++; spin_unlock_irqrestore(&sep->snd_rply_lck, lck_flags); @@ -3241,7 +3236,7 @@ static irqreturn_t sep_inthandler(int irq, void *dev_id) dev_dbg(&sep->pdev->dev, "sep int: send_ct %lx reply_ct %lx\n", sep->send_ct, sep->reply_ct); - /* is this printf or daemon request? */ + /* Is this printf or daemon request? */ reg_val2 = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR); dev_dbg(&sep->pdev->dev, "SEP Interrupt - reg2 is %08x\n", reg_val2); @@ -3253,11 +3248,11 @@ static irqreturn_t sep_inthandler(int irq, void *dev_id) dev_dbg(&sep->pdev->dev, "int: daemon request\n"); wake_up(&sep->event_request_daemon); } else { - dev_dbg(&sep->pdev->dev, "int: sep reply\n"); + dev_dbg(&sep->pdev->dev, "int: SEP reply\n"); wake_up(&sep->event); } } else { - dev_dbg(&sep->pdev->dev, "int: not sep interrupt\n"); + dev_dbg(&sep->pdev->dev, "int: not SEP interrupt\n"); int_error = IRQ_NONE; } if (int_error == IRQ_HANDLED) @@ -3329,20 +3324,20 @@ static int __devinit sep_probe(struct pci_dev *pdev, int error = 0; struct sep_device *sep; - pr_debug("Sep pci probe starting\n"); + pr_debug("SEP pci probe starting\n"); if (sep_dev != NULL) { dev_warn(&pdev->dev, "only one SEP supported.\n"); return -EBUSY; } - /* enable the device */ + /* Enable the device */ error = pci_enable_device(pdev); if (error) { dev_warn(&pdev->dev, "error enabling pci device\n"); goto end_function; } - /* allocate the sep_device structure for this device */ + /* Allocate the sep_device structure for this device */ sep_dev = kzalloc(sizeof(struct sep_device), GFP_ATOMIC); if (sep_dev == NULL) { dev_warn(&pdev->dev, @@ -3351,7 +3346,7 @@ static int __devinit sep_probe(struct pci_dev *pdev, } /* - * we're going to use another variable for actually + * We're going to use another variable for actually * working with the device; this way, if we have * multiple devices in the future, it would be easier * to make appropriate changes @@ -3366,7 +3361,7 @@ static int __devinit sep_probe(struct pci_dev *pdev, dev_dbg(&sep->pdev->dev, "PCI obtained, device being prepared\n"); dev_dbg(&sep->pdev->dev, "revision is %d\n", sep->pdev->revision); - /* set up our register area */ + /* Set up our register area */ sep->reg_physical_addr = pci_resource_start(sep->pdev, 0); if (!sep->reg_physical_addr) { dev_warn(&sep->pdev->dev, "Error getting register start\n"); @@ -3395,7 +3390,7 @@ static int __devinit sep_probe(struct pci_dev *pdev, (unsigned long long)sep->reg_physical_end, sep->reg_addr); - /* allocate the shared area */ + /* Allocate the shared area */ sep->shared_size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + SYNCHRONIC_DMA_TABLES_AREA_SIZE_BYTES + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + @@ -3404,11 +3399,11 @@ static int __devinit sep_probe(struct pci_dev *pdev, if (sep_map_and_alloc_shared_area(sep)) { error = -ENOMEM; - /* allocation failed */ + /* Allocation failed */ goto end_function_error; } - /* the next section depends on type of unit */ + /* The next section depends on type of unit */ if (sep->mrst) { error = register_rar(RAR_TYPE_IMAGE, &sep_callback, (unsigned long)sep); @@ -3435,14 +3430,14 @@ static int __devinit sep_probe(struct pci_dev *pdev, dev_dbg(&sep->pdev->dev, "about to write IMR and ICR REG_ADDR\n"); - /* clear ICR register */ + /* Clear ICR register */ sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF); - /* set the IMR register - open only GPR 2 */ + /* Set the IMR register - open only GPR 2 */ sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); dev_dbg(&sep->pdev->dev, "about to call request_irq\n"); - /* get the interrupt line */ + /* Get the interrupt line */ error = request_irq(pdev->irq, sep_inthandler, IRQF_SHARED, "sep_driver", sep); @@ -3455,7 +3450,7 @@ static int __devinit sep_probe(struct pci_dev *pdev, goto end_function; end_function_deallocate_sep_shared_area: - /* de-allocate shared area */ + /* De-allocate shared area */ sep_unmap_and_free_shared_area(sep); end_function_error: @@ -3475,7 +3470,7 @@ static DEFINE_PCI_DEVICE_TABLE(sep_pci_id_tbl) = { MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl); -/* field for registering driver to PCI device */ +/* Field for registering driver to PCI device */ static struct pci_driver sep_pci_driver = { .name = "sep_sec_driver", .id_table = sep_pci_id_tbl, @@ -3483,7 +3478,7 @@ static struct pci_driver sep_pci_driver = { /* FIXME: remove handler */ }; -/* file operation for singleton sep operations */ +/* File operation for singleton SEP operations */ static const struct file_operations singleton_file_operations = { .owner = THIS_MODULE, .unlocked_ioctl = sep_singleton_ioctl, @@ -3493,7 +3488,7 @@ static const struct file_operations singleton_file_operations = { .mmap = sep_mmap, }; -/* file operation for daemon operations */ +/* File operation for daemon operations */ static const struct file_operations daemon_file_operations = { .owner = THIS_MODULE, .unlocked_ioctl = sep_request_daemon_ioctl, @@ -3503,7 +3498,7 @@ static const struct file_operations daemon_file_operations = { .mmap = sep_request_daemon_mmap, }; -/* the files operations structure of the driver */ +/* The files operations structure of the driver */ static const struct file_operations sep_file_operations = { .owner = THIS_MODULE, .unlocked_ioctl = sep_ioctl, @@ -3526,19 +3521,19 @@ static int sep_reconfig_shared_area(struct sep_device *sep) dev_dbg(&sep->pdev->dev, "reconfig shared area start\n"); - /* send the new SHARED MESSAGE AREA to the SEP */ + /* Send the new SHARED MESSAGE AREA to the SEP */ dev_dbg(&sep->pdev->dev, "sending %08llx to sep\n", (unsigned long long)sep->shared_bus); sep_write_reg(sep, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep->shared_bus); - /* poll for SEP response */ + /* Poll for SEP response */ ret_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); while (ret_val != 0xffffffff && ret_val != sep->shared_bus) ret_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); - /* check the return value (register) */ + /* Check the return value (register) */ if (ret_val != sep->shared_bus) { dev_warn(&sep->pdev->dev, "could not reconfig shared area\n"); dev_warn(&sep->pdev->dev, "result was %x\n", ret_val); @@ -3574,7 +3569,7 @@ static int sep_register_driver_to_fs(struct sep_device *sep) ret_val = misc_register(&sep->miscdev_sep); if (ret_val) { - dev_warn(&sep->pdev->dev, "misc reg fails for sep %x\n", + dev_warn(&sep->pdev->dev, "misc reg fails for SEP %x\n", ret_val); return ret_val; } @@ -3611,7 +3606,7 @@ static int __init sep_init(void) int ret_val = 0; struct sep_device *sep = NULL; - pr_debug("Sep driver: Init start\n"); + pr_debug("SEP driver: Init start\n"); ret_val = pci_register_driver(&sep_pci_driver); if (ret_val) { @@ -3628,14 +3623,14 @@ static int __init sep_init(void) mutex_init(&sep->sep_mutex); mutex_init(&sep->ioctl_mutex); - /* new chip requires share area reconfigure */ - if (sep->pdev->revision == 4) { /* only for new chip */ + /* The new chip requires ashared area reconfigure */ + if (sep->pdev->revision == 4) { /* Only for new chip */ ret_val = sep_reconfig_shared_area(sep); if (ret_val) goto end_function_unregister_pci; } - /* register driver to fs */ + /* Register driver to fs */ ret_val = sep_register_driver_to_fs(sep); if (ret_val) { dev_warn(&sep->pdev->dev, "error registering device to file\n"); @@ -3665,18 +3660,18 @@ static void __exit sep_exit(void) sep = sep_dev; pr_debug("Exit start\n"); - /* unregister from fs */ + /* Unregister from fs */ misc_deregister(&sep->miscdev_sep); misc_deregister(&sep->miscdev_singleton); misc_deregister(&sep->miscdev_daemon); - /* free the irq */ + /* Free the irq */ free_irq(sep->pdev->irq, sep); - /* unregister the driver */ + /* Unregister the driver */ pci_unregister_driver(&sep_pci_driver); - /* free shared area */ + /* Free the shared area */ if (sep_dev) { sep_unmap_and_free_shared_area(sep_dev); dev_dbg(&sep->pdev->dev,