Skip to content

L
linux
Commit 6eb44c53 authored by Alan Cox's avatar Alan Cox Committed by Greg Kroah-Hartman
Browse files
Options

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: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 7c9eb691
Show whitespace changes
Inline Side-by-side
Showing with 313 additions and 318 deletions
drivers/staging/sep/sep_driver.c
View file @ 6eb44c53
......@@ -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 @@ static int sep_singleton_open(struct inode *inode_ptr, struct file *file_ptr)
/**
* 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 @@ static int sep_request_daemon_mmap(struct file *filp,
/**
* 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 @@ static int sep_set_caller_id_handler(struct sep_device *sep, u32 arg)
/**
* 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 @@ static int sep_send_command_handler(struct sep_device *sep)
/**
* 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(&current->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(&current->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,
&current_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 @@ static int sep_prepare_input_dma_table(struct sep_device *sep,
}
/**
* 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 @@ static int sep_prepare_input_dma_table(struct sep_device *sep,
* @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,
&current_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,
&current_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 @@ static int sep_prepare_input_output_dma_table(struct sep_device *sep,
* @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 @@ static int sep_prepare_input_output_dma_table_in_dcb(struct sep_device *sep,
/**
* 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 @@ static int sep_create_sync_dma_tables_handler(struct sep_device *sep,
* @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 @@ static int sep_rar_prepare_output_msg_handler(struct sep_device *sep,
* @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 @@ static long sep_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
*/
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 @@ static long sep_request_daemon_ioctl(struct file *filp, u32 cmd,
}
/**
* 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,
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7