Commit | Line | Data |
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cd1bb431 MA |
1 | /* |
2 | * | |
3 | * sep_main_mod.c - Security Processor Driver main group of functions | |
4 | * | |
5 | * Copyright(c) 2009 Intel Corporation. All rights reserved. | |
6 | * Copyright(c) 2009 Discretix. All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along with | |
19 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
20 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | * | |
22 | * CONTACTS: | |
23 | * | |
24 | * Mark Allyn mark.a.allyn@intel.com | |
25 | * | |
26 | * CHANGES: | |
27 | * | |
28 | * 2009.06.26 Initial publish | |
29 | * | |
30 | */ | |
31 | ||
32 | #include <linux/init.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/fs.h> | |
35 | #include <linux/cdev.h> | |
36 | #include <linux/kdev_t.h> | |
37 | #include <linux/mutex.h> | |
38 | #include <linux/mm.h> | |
39 | #include <linux/poll.h> | |
40 | #include <linux/wait.h> | |
41 | #include <asm/ioctl.h> | |
42 | #include <linux/ioport.h> | |
43 | #include <asm/io.h> | |
44 | #include <linux/interrupt.h> | |
45 | #include <linux/pagemap.h> | |
46 | #include <asm/cacheflush.h> | |
47 | #include "sep_driver_hw_defs.h" | |
48 | #include "sep_driver_config.h" | |
49 | #include "sep_driver_api.h" | |
50 | #include "sep_driver_ext_api.h" | |
f5e3980f | 51 | #include "sep_dev.h" |
cd1bb431 MA |
52 | |
53 | /*---------------------------------------- | |
54 | DEFINES | |
55 | -----------------------------------------*/ | |
56 | ||
57 | ||
58 | #define INT_MODULE_PARM(n, v) int n = v; module_param(n, int, 0) | |
59 | ||
60 | /*-------------------------------------- | |
61 | TYPEDEFS | |
62 | -----------------------------------------*/ | |
63 | ||
64 | ||
65 | ||
66 | /*-------------------------------------------- | |
67 | GLOBAL variables | |
68 | --------------------------------------------*/ | |
69 | ||
70 | /* debug messages level */ | |
71 | INT_MODULE_PARM(sepDebug, 0x0); | |
72 | MODULE_PARM_DESC(sepDebug, "Flag to enable SEP debug messages"); | |
73 | ||
cd1bb431 MA |
74 | |
75 | /* | |
76 | mutex for the access to the internals of the sep driver | |
77 | */ | |
78 | static DEFINE_MUTEX(sep_mutex); | |
79 | ||
80 | ||
81 | /* wait queue head (event) of the driver */ | |
f5e3980f | 82 | static DECLARE_WAIT_QUEUE_HEAD(g_sep_event); |
cd1bb431 | 83 | |
cd1bb431 | 84 | |
cd1bb431 MA |
85 | |
86 | /*------------------------------------------------ | |
87 | PROTOTYPES | |
88 | ---------------------------------------------------*/ | |
89 | ||
90 | /* | |
91 | interrupt handler function | |
92 | */ | |
93 | irqreturn_t sep_inthandler(int irq, void *dev_id); | |
94 | ||
95 | /* | |
96 | this function registers the driver to the file system | |
97 | */ | |
d19cf32f | 98 | static int sep_register_driver_to_fs(void); |
cd1bb431 MA |
99 | |
100 | /* | |
101 | this function unregisters driver from fs | |
102 | */ | |
103 | static void sep_unregister_driver_from_fs(void); | |
104 | ||
105 | /* | |
106 | this function calculates the size of data that can be inserted into the lli | |
107 | table from this array the condition is that either the table is full | |
108 | (all etnries are entered), or there are no more entries in the lli array | |
109 | */ | |
d19cf32f | 110 | static unsigned long sep_calculate_lli_table_max_size(struct sep_lli_entry_t *lli_in_array_ptr, unsigned long num_array_entries); |
cd1bb431 MA |
111 | /* |
112 | this functions builds ont lli table from the lli_array according to the | |
113 | given size of data | |
114 | */ | |
d19cf32f | 115 | static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, struct sep_lli_entry_t *lli_table_ptr, unsigned long *num_processed_entries_ptr, unsigned long *num_table_entries_ptr, unsigned long table_data_size); |
cd1bb431 MA |
116 | |
117 | /* | |
118 | this function goes over the list of the print created tables and prints | |
119 | all the data | |
120 | */ | |
d19cf32f | 121 | static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, unsigned long num_table_entries, unsigned long table_data_size); |
cd1bb431 MA |
122 | |
123 | ||
124 | ||
125 | /* | |
126 | This function raises interrupt to SEPm that signals that is has a new | |
127 | command from HOST | |
128 | */ | |
129 | static void sep_send_command_handler(void); | |
130 | ||
131 | ||
132 | /* | |
133 | This function raises interrupt to SEP that signals that is has a | |
134 | new reply from HOST | |
135 | */ | |
136 | static void sep_send_reply_command_handler(void); | |
137 | ||
138 | /* | |
139 | This function handles the allocate data pool memory request | |
140 | This function returns calculates the physical address of the allocated memory | |
141 | and the offset of this area from the mapped address. Therefore, the FVOs in | |
142 | user space can calculate the exact virtual address of this allocated memory | |
143 | */ | |
144 | static int sep_allocate_data_pool_memory_handler(unsigned long arg); | |
145 | ||
146 | ||
147 | /* | |
148 | This function handles write into allocated data pool command | |
149 | */ | |
150 | static int sep_write_into_data_pool_handler(unsigned long arg); | |
151 | ||
152 | /* | |
153 | this function handles the read from data pool command | |
154 | */ | |
155 | static int sep_read_from_data_pool_handler(unsigned long arg); | |
156 | ||
157 | /* | |
158 | this function handles tha request for creation of the DMA table | |
159 | for the synchronic symmetric operations (AES,DES) | |
160 | */ | |
161 | static int sep_create_sync_dma_tables_handler(unsigned long arg); | |
162 | ||
163 | /* | |
164 | this function handles the request to create the DMA tables for flow | |
165 | */ | |
166 | static int sep_create_flow_dma_tables_handler(unsigned long arg); | |
167 | ||
168 | /* | |
169 | This API handles the end transaction request | |
170 | */ | |
171 | static int sep_end_transaction_handler(unsigned long arg); | |
172 | ||
173 | ||
174 | /* | |
175 | this function handles add tables to flow | |
176 | */ | |
177 | static int sep_add_flow_tables_handler(unsigned long arg); | |
178 | ||
179 | /* | |
180 | this function add the flow add message to the specific flow | |
181 | */ | |
182 | static int sep_add_flow_tables_message_handler(unsigned long arg); | |
183 | ||
184 | /* | |
185 | this function handles the request for SEP start | |
186 | */ | |
187 | static int sep_start_handler(void); | |
188 | ||
189 | /* | |
190 | this function handles the request for SEP initialization | |
191 | */ | |
192 | static int sep_init_handler(unsigned long arg); | |
193 | ||
194 | /* | |
195 | this function handles the request cache and resident reallocation | |
196 | */ | |
197 | static int sep_realloc_cache_resident_handler(unsigned long arg); | |
198 | ||
199 | ||
200 | /* | |
201 | This api handles the setting of API mode to blocking or non-blocking | |
202 | */ | |
203 | static int sep_set_api_mode_handler(unsigned long arg); | |
204 | ||
205 | /* handler for flow done interrupt */ | |
d19cf32f | 206 | static void sep_flow_done_handler(struct work_struct *work); |
cd1bb431 MA |
207 | |
208 | /* | |
209 | This function locks all the physical pages of the kernel virtual buffer | |
210 | and construct a basic lli array, where each entry holds the physical | |
211 | page address and the size that application data holds in this physical pages | |
212 | */ | |
d19cf32f | 213 | static int sep_lock_kernel_pages(unsigned long kernel_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr); |
cd1bb431 MA |
214 | |
215 | /* | |
216 | This function creates one DMA table for flow and returns its data, | |
217 | and pointer to its info entry | |
218 | */ | |
d19cf32f | 219 | static int sep_prepare_one_flow_dma_table(unsigned long virt_buff_addr, unsigned long virt_buff_size, struct sep_lli_entry_t *table_data, struct sep_lli_entry_t **info_entry_ptr, struct sep_flow_context_t *flow_data_ptr, bool isKernelVirtualAddress); |
cd1bb431 MA |
220 | |
221 | /* | |
222 | This function creates a list of tables for flow and returns the data for the | |
223 | first and last tables of the list | |
224 | */ | |
d19cf32f AC |
225 | static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, |
226 | unsigned long first_buff_addr, struct sep_flow_context_t *flow_data_ptr, struct sep_lli_entry_t *first_table_data_ptr, struct sep_lli_entry_t *last_table_data_ptr, bool isKernelVirtualAddress); | |
cd1bb431 MA |
227 | |
228 | /* | |
229 | this function find a space for the new flow dma table | |
230 | */ | |
d19cf32f | 231 | static int sep_find_free_flow_dma_table_space(unsigned long **table_address_ptr); |
cd1bb431 MA |
232 | |
233 | /* | |
234 | this function goes over all the flow tables connected to the given table and | |
235 | deallocate them | |
236 | */ | |
d19cf32f | 237 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr); |
cd1bb431 MA |
238 | |
239 | /* | |
240 | This function handler the set flow id command | |
241 | */ | |
242 | static int sep_set_flow_id_handler(unsigned long arg); | |
243 | ||
244 | /* | |
245 | This function returns pointer to the flow data structure | |
246 | that conatins the given id | |
247 | */ | |
d19cf32f | 248 | static int sep_find_flow_context(unsigned long flow_id, struct sep_flow_context_t **flow_data_ptr); |
cd1bb431 MA |
249 | |
250 | ||
251 | /* | |
252 | this function returns the physical and virtual addresses of the static pool | |
253 | */ | |
254 | static int sep_get_static_pool_addr_handler(unsigned long arg); | |
255 | ||
256 | /* | |
257 | this address gets the offset of the physical address from the start of | |
258 | the mapped area | |
259 | */ | |
260 | static int sep_get_physical_mapped_offset_handler(unsigned long arg); | |
261 | ||
262 | ||
263 | /* | |
264 | this function handles the request for get time | |
265 | */ | |
266 | static int sep_get_time_handler(unsigned long arg); | |
267 | ||
268 | /* | |
269 | calculates time and sets it at the predefined address | |
270 | */ | |
d19cf32f | 271 | static int sep_set_time(unsigned long *address_ptr, unsigned long *time_in_sec_ptr); |
cd1bb431 MA |
272 | |
273 | /* | |
274 | PATCH for configuring the DMA to single burst instead of multi-burst | |
275 | */ | |
276 | static void sep_configure_dma_burst(void); | |
277 | ||
278 | /* | |
279 | This function locks all the physical pages of the | |
280 | application virtual buffer and construct a basic lli | |
281 | array, where each entry holds the physical page address | |
282 | and the size that application data holds in this physical pages | |
283 | */ | |
d19cf32f | 284 | static int sep_lock_user_pages(unsigned long app_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr); |
cd1bb431 MA |
285 | |
286 | /*--------------------------------------------- | |
287 | FUNCTIONS | |
288 | -----------------------------------------------*/ | |
289 | ||
cd1bb431 MA |
290 | /* |
291 | this function returns the address of the message shared area | |
292 | */ | |
d19cf32f | 293 | void sep_map_shared_area(unsigned long *mappedAddr_ptr) |
cd1bb431 | 294 | { |
d19cf32f | 295 | *mappedAddr_ptr = sep_dev->shared_area_addr; |
cd1bb431 MA |
296 | } |
297 | ||
298 | /* | |
299 | this function returns the address of the message shared area | |
300 | */ | |
301 | void sep_send_msg_rdy_cmd() | |
302 | { | |
d19cf32f | 303 | sep_send_command_handler(); |
cd1bb431 MA |
304 | } |
305 | ||
306 | /* this functions frees all the resources that were allocated for the building | |
307 | of the LLI DMA tables */ | |
308 | void sep_free_dma_resources() | |
309 | { | |
d19cf32f | 310 | sep_free_dma_table_data_handler(); |
cd1bb431 MA |
311 | } |
312 | ||
313 | /* poll(suspend), until reply from sep */ | |
314 | void sep_driver_poll() | |
315 | { | |
d19cf32f | 316 | unsigned long retVal = 0; |
cd1bb431 MA |
317 | |
318 | #ifdef SEP_DRIVER_POLLING_MODE | |
319 | ||
d19cf32f AC |
320 | while (sep_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) |
321 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
cd1bb431 | 322 | |
d19cf32f | 323 | sep_dev->sep_to_host_reply_counter++; |
cd1bb431 | 324 | #else |
d19cf32f AC |
325 | /* poll, until reply from sep */ |
326 | wait_event(g_sep_event, (sep_dev->host_to_sep_send_counter == sep_dev->sep_to_host_reply_counter)); | |
cd1bb431 MA |
327 | |
328 | #endif | |
329 | } | |
330 | ||
331 | /*---------------------------------------------------------------------- | |
332 | open function of the character driver - must only lock the mutex | |
333 | must also release the memory data pool allocations | |
334 | ------------------------------------------------------------------------*/ | |
335 | static int sep_open(struct inode *inode_ptr, struct file *file_ptr) | |
336 | { | |
d19cf32f | 337 | int error; |
cd1bb431 | 338 | |
d19cf32f | 339 | dbg("SEP Driver:--------> open start\n"); |
cd1bb431 | 340 | |
d19cf32f | 341 | error = 0; |
cd1bb431 | 342 | |
d19cf32f AC |
343 | /* check the blocking mode */ |
344 | if (sep_dev->block_mode_flag) | |
345 | /* lock mutex */ | |
346 | mutex_lock(&sep_mutex); | |
347 | else | |
348 | error = mutex_trylock(&sep_mutex); | |
cd1bb431 | 349 | |
d19cf32f AC |
350 | /* check the error */ |
351 | if (error) { | |
352 | edbg("SEP Driver: down_interruptible failed\n"); | |
cd1bb431 | 353 | |
d19cf32f AC |
354 | goto end_function; |
355 | } | |
cd1bb431 | 356 | |
d19cf32f AC |
357 | /* release data pool allocations */ |
358 | sep_dev->data_pool_bytes_allocated = 0; | |
cd1bb431 | 359 | |
f93e4bf9 | 360 | end_function: |
d19cf32f | 361 | dbg("SEP Driver:<-------- open end\n"); |
d19cf32f | 362 | return error; |
cd1bb431 MA |
363 | } |
364 | ||
365 | ||
366 | ||
367 | ||
368 | /*------------------------------------------------------------ | |
369 | release function | |
370 | -------------------------------------------------------------*/ | |
371 | static int sep_release(struct inode *inode_ptr, struct file *file_ptr) | |
372 | { | |
d19cf32f | 373 | dbg("----------->SEP Driver: sep_release start\n"); |
cd1bb431 | 374 | |
d19cf32f AC |
375 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
376 | /* close IMR */ | |
377 | sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF); | |
cd1bb431 | 378 | |
d19cf32f AC |
379 | /* release IRQ line */ |
380 | free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address); | |
cd1bb431 MA |
381 | |
382 | #endif | |
383 | ||
d19cf32f AC |
384 | /* unlock the sep mutex */ |
385 | mutex_unlock(&sep_mutex); | |
cd1bb431 | 386 | |
d19cf32f | 387 | dbg("SEP Driver:<-------- sep_release end\n"); |
cd1bb431 | 388 | |
d19cf32f | 389 | return 0; |
cd1bb431 MA |
390 | } |
391 | ||
392 | ||
393 | ||
394 | ||
395 | /*--------------------------------------------------------------- | |
396 | map function - this functions maps the message shared area | |
397 | -----------------------------------------------------------------*/ | |
d19cf32f | 398 | static int sep_mmap(struct file *filp, struct vm_area_struct *vma) |
cd1bb431 | 399 | { |
d19cf32f | 400 | unsigned long phys_addr; |
cd1bb431 | 401 | |
d19cf32f | 402 | dbg("-------->SEP Driver: mmap start\n"); |
cd1bb431 | 403 | |
d19cf32f AC |
404 | /* check that the size of the mapped range is as the size of the message |
405 | shared area */ | |
406 | if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) { | |
407 | edbg("SEP Driver mmap requested size is more than allowed\n"); | |
408 | printk(KERN_WARNING "SEP Driver mmap requested size is more \ | |
cd1bb431 | 409 | than allowed\n"); |
d19cf32f AC |
410 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_end); |
411 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_start); | |
412 | return -EAGAIN; | |
413 | } | |
414 | ||
415 | edbg("SEP Driver:g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr); | |
416 | ||
417 | /* get physical address */ | |
418 | phys_addr = sep_dev->phys_shared_area_addr; | |
419 | ||
420 | edbg("SEP Driver: phys_addr is %08lx\n", phys_addr); | |
421 | ||
422 | if (remap_pfn_range(vma, vma->vm_start, phys_addr >> PAGE_SHIFT, vma->vm_end - vma->vm_start, vma->vm_page_prot)) { | |
423 | edbg("SEP Driver remap_page_range failed\n"); | |
424 | printk(KERN_WARNING "SEP Driver remap_page_range failed\n"); | |
425 | return -EAGAIN; | |
426 | } | |
427 | ||
428 | dbg("SEP Driver:<-------- mmap end\n"); | |
429 | ||
430 | return 0; | |
cd1bb431 MA |
431 | } |
432 | ||
433 | ||
434 | /*----------------------------------------------- | |
435 | poll function | |
436 | *----------------------------------------------*/ | |
d19cf32f | 437 | static unsigned int sep_poll(struct file *filp, poll_table * wait) |
cd1bb431 | 438 | { |
d19cf32f | 439 | unsigned long count; |
d19cf32f | 440 | unsigned int mask = 0; |
f93e4bf9 | 441 | unsigned long retVal = 0; /* flow id */ |
cd1bb431 | 442 | |
d19cf32f | 443 | dbg("---------->SEP Driver poll: start\n"); |
cd1bb431 MA |
444 | |
445 | ||
446 | #if SEP_DRIVER_POLLING_MODE | |
447 | ||
d19cf32f AC |
448 | while (sep_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) { |
449 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
cd1bb431 | 450 | |
d19cf32f AC |
451 | for (count = 0; count < 10 * 4; count += 4) |
452 | edbg("Poll Debug Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + count))); | |
453 | } | |
cd1bb431 | 454 | |
d19cf32f | 455 | sep_dev->sep_to_host_reply_counter++; |
cd1bb431 | 456 | #else |
d19cf32f AC |
457 | /* add the event to the polling wait table */ |
458 | poll_wait(filp, &g_sep_event, wait); | |
cd1bb431 MA |
459 | |
460 | #endif | |
461 | ||
d19cf32f AC |
462 | edbg("sep_dev->host_to_sep_send_counter is %lu\n", sep_dev->host_to_sep_send_counter); |
463 | edbg("sep_dev->sep_to_host_reply_counter is %lu\n", sep_dev->sep_to_host_reply_counter); | |
464 | ||
465 | /* check if the data is ready */ | |
466 | if (sep_dev->host_to_sep_send_counter == sep_dev->sep_to_host_reply_counter) { | |
467 | for (count = 0; count < 12 * 4; count += 4) | |
468 | edbg("Sep Mesg Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count))); | |
469 | ||
470 | for (count = 0; count < 10 * 4; count += 4) | |
471 | edbg("Debug Data Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + 0x1800 + count))); | |
472 | ||
473 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
474 | edbg("retVal is %lu\n", retVal); | |
475 | /* check if the this is sep reply or request */ | |
476 | if (retVal >> 31) { | |
477 | edbg("SEP Driver: sep request in\n"); | |
478 | /* request */ | |
479 | mask |= POLLOUT | POLLWRNORM; | |
480 | } else { | |
481 | edbg("SEP Driver: sep reply in\n"); | |
482 | mask |= POLLIN | POLLRDNORM; | |
483 | } | |
cd1bb431 | 484 | } |
d19cf32f AC |
485 | dbg("SEP Driver:<-------- poll exit\n"); |
486 | return mask; | |
cd1bb431 MA |
487 | } |
488 | ||
489 | ||
d19cf32f | 490 | static int sep_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) |
cd1bb431 | 491 | { |
f93e4bf9 | 492 | int error = 0; |
cd1bb431 | 493 | |
d19cf32f | 494 | dbg("------------>SEP Driver: ioctl start\n"); |
cd1bb431 | 495 | |
d19cf32f | 496 | edbg("SEP Driver: cmd is %x\n", cmd); |
cd1bb431 | 497 | |
d19cf32f AC |
498 | /* check that the command is for sep device */ |
499 | if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) | |
500 | error = -ENOTTY; | |
cd1bb431 MA |
501 | |
502 | switch (cmd) { | |
503 | case SEP_IOCSENDSEPCOMMAND: | |
d19cf32f AC |
504 | /* send command to SEP */ |
505 | sep_send_command_handler(); | |
d19cf32f | 506 | edbg("SEP Driver: after sep_send_command_handler\n"); |
d19cf32f | 507 | break; |
cd1bb431 | 508 | case SEP_IOCSENDSEPRPLYCOMMAND: |
d19cf32f AC |
509 | /* send reply command to SEP */ |
510 | sep_send_reply_command_handler(); | |
d19cf32f | 511 | break; |
cd1bb431 | 512 | case SEP_IOCALLOCDATAPOLL: |
d19cf32f AC |
513 | /* allocate data pool */ |
514 | error = sep_allocate_data_pool_memory_handler(arg); | |
d19cf32f | 515 | break; |
cd1bb431 | 516 | case SEP_IOCWRITEDATAPOLL: |
d19cf32f AC |
517 | /* write data into memory pool */ |
518 | error = sep_write_into_data_pool_handler(arg); | |
d19cf32f | 519 | break; |
cd1bb431 | 520 | case SEP_IOCREADDATAPOLL: |
d19cf32f AC |
521 | /* read data from data pool into application memory */ |
522 | error = sep_read_from_data_pool_handler(arg); | |
d19cf32f | 523 | break; |
cd1bb431 | 524 | case SEP_IOCCREATESYMDMATABLE: |
d19cf32f AC |
525 | /* create dma table for synhronic operation */ |
526 | error = sep_create_sync_dma_tables_handler(arg); | |
d19cf32f | 527 | break; |
cd1bb431 | 528 | case SEP_IOCCREATEFLOWDMATABLE: |
d19cf32f AC |
529 | /* create flow dma tables */ |
530 | error = sep_create_flow_dma_tables_handler(arg); | |
d19cf32f | 531 | break; |
cd1bb431 | 532 | case SEP_IOCFREEDMATABLEDATA: |
d19cf32f AC |
533 | /* free the pages */ |
534 | error = sep_free_dma_table_data_handler(); | |
d19cf32f | 535 | break; |
cd1bb431 | 536 | case SEP_IOCSETFLOWID: |
d19cf32f AC |
537 | /* set flow id */ |
538 | error = sep_set_flow_id_handler(arg); | |
d19cf32f | 539 | break; |
cd1bb431 | 540 | case SEP_IOCADDFLOWTABLE: |
d19cf32f AC |
541 | /* add tables to the dynamic flow */ |
542 | error = sep_add_flow_tables_handler(arg); | |
d19cf32f | 543 | break; |
cd1bb431 | 544 | case SEP_IOCADDFLOWMESSAGE: |
d19cf32f AC |
545 | /* add message of add tables to flow */ |
546 | error = sep_add_flow_tables_message_handler(arg); | |
d19cf32f | 547 | break; |
cd1bb431 | 548 | case SEP_IOCSEPSTART: |
d19cf32f AC |
549 | /* start command to sep */ |
550 | error = sep_start_handler(); | |
551 | break; | |
cd1bb431 | 552 | case SEP_IOCSEPINIT: |
d19cf32f AC |
553 | /* init command to sep */ |
554 | error = sep_init_handler(arg); | |
555 | break; | |
cd1bb431 | 556 | case SEP_IOCSETAPIMODE: |
d19cf32f AC |
557 | /* set non- blocking mode */ |
558 | error = sep_set_api_mode_handler(arg); | |
d19cf32f | 559 | break; |
cd1bb431 | 560 | case SEP_IOCGETSTATICPOOLADDR: |
cd1bb431 MA |
561 | /* get the physical and virtual addresses of the static pool */ |
562 | error = sep_get_static_pool_addr_handler(arg); | |
cd1bb431 | 563 | break; |
cd1bb431 | 564 | case SEP_IOCENDTRANSACTION: |
d19cf32f | 565 | error = sep_end_transaction_handler(arg); |
cd1bb431 | 566 | break; |
cd1bb431 | 567 | case SEP_IOCREALLOCCACHERES: |
d19cf32f | 568 | error = sep_realloc_cache_resident_handler(arg); |
d19cf32f | 569 | break; |
cd1bb431 | 570 | case SEP_IOCGETMAPPEDADDROFFSET: |
d19cf32f | 571 | error = sep_get_physical_mapped_offset_handler(arg); |
d19cf32f | 572 | break; |
cd1bb431 | 573 | case SEP_IOCGETIME: |
d19cf32f | 574 | error = sep_get_time_handler(arg); |
d19cf32f | 575 | break; |
cd1bb431 | 576 | default: |
d19cf32f AC |
577 | error = -ENOTTY; |
578 | break; | |
579 | } | |
d19cf32f | 580 | dbg("SEP Driver:<-------- ioctl end\n"); |
d19cf32f | 581 | return error; |
cd1bb431 MA |
582 | } |
583 | ||
584 | ||
cd1bb431 MA |
585 | |
586 | /* | |
587 | interrupt handler function | |
588 | */ | |
589 | irqreturn_t sep_inthandler(int irq, void *dev_id) | |
590 | { | |
d19cf32f | 591 | irqreturn_t int_error; |
d19cf32f | 592 | unsigned long error; |
d19cf32f | 593 | unsigned long reg_val; |
d19cf32f | 594 | unsigned long flow_id; |
d19cf32f | 595 | struct sep_flow_context_t *flow_context_ptr; |
cd1bb431 | 596 | |
d19cf32f | 597 | int_error = IRQ_HANDLED; |
cd1bb431 | 598 | |
d19cf32f AC |
599 | /* read the IRR register to check if this is SEP interrupt */ |
600 | reg_val = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR); | |
601 | edbg("SEP Interrupt - reg is %08lx\n", reg_val); | |
cd1bb431 | 602 | |
d19cf32f AC |
603 | /* check if this is the flow interrupt */ |
604 | if (0 /*reg_val & (0x1 << 11) */ ) { | |
605 | /* read GPRO to find out the which flow is done */ | |
606 | flow_id = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR); | |
cd1bb431 | 607 | |
d19cf32f AC |
608 | /* find the contex of the flow */ |
609 | error = sep_find_flow_context(flow_id >> 28, &flow_context_ptr); | |
610 | if (error) | |
611 | goto end_function_with_error; | |
cd1bb431 | 612 | |
d19cf32f | 613 | INIT_WORK(&flow_context_ptr->flow_wq, sep_flow_done_handler); |
cd1bb431 | 614 | |
d19cf32f AC |
615 | /* queue the work */ |
616 | queue_work(sep_dev->flow_wq_ptr, &flow_context_ptr->flow_wq); | |
cd1bb431 | 617 | |
cd1bb431 | 618 | } else { |
d19cf32f AC |
619 | /* check if this is reply interrupt from SEP */ |
620 | if (reg_val & (0x1 << 13)) { | |
621 | /* update the counter of reply messages */ | |
622 | sep_dev->sep_to_host_reply_counter++; | |
623 | ||
624 | /* wake up the waiting process */ | |
625 | wake_up(&g_sep_event); | |
626 | } else { | |
627 | int_error = IRQ_NONE; | |
628 | goto end_function; | |
629 | } | |
cd1bb431 | 630 | } |
f93e4bf9 | 631 | end_function_with_error: |
d19cf32f AC |
632 | /* clear the interrupt */ |
633 | sep_write_reg(sep_dev, HW_HOST_ICR_REG_ADDR, reg_val); | |
f93e4bf9 | 634 | end_function: |
d19cf32f | 635 | return int_error; |
cd1bb431 MA |
636 | } |
637 | ||
638 | ||
639 | /* | |
640 | This function prepares only input DMA table for synhronic symmetric | |
641 | operations (HASH) | |
642 | */ | |
d19cf32f | 643 | int sep_prepare_input_dma_table(unsigned long app_virt_addr, unsigned long data_size, unsigned long block_size, unsigned long *lli_table_ptr, unsigned long *num_entries_ptr, unsigned long *table_data_size_ptr, bool isKernelVirtualAddress) |
cd1bb431 | 644 | { |
d19cf32f AC |
645 | /* pointer to the info entry of the table - the last entry */ |
646 | struct sep_lli_entry_t *info_entry_ptr; | |
d19cf32f AC |
647 | /* array of pointers ot page */ |
648 | struct sep_lli_entry_t *lli_array_ptr; | |
d19cf32f AC |
649 | /* points to the first entry to be processed in the lli_in_array */ |
650 | unsigned long current_entry; | |
d19cf32f AC |
651 | /* num entries in the virtual buffer */ |
652 | unsigned long sep_lli_entries; | |
d19cf32f AC |
653 | /* lli table pointer */ |
654 | struct sep_lli_entry_t *in_lli_table_ptr; | |
d19cf32f AC |
655 | /* the total data in one table */ |
656 | unsigned long table_data_size; | |
d19cf32f AC |
657 | /* number of entries in lli table */ |
658 | unsigned long num_entries_in_table; | |
d19cf32f AC |
659 | /* next table address */ |
660 | unsigned long lli_table_alloc_addr; | |
d19cf32f | 661 | unsigned long result; |
cd1bb431 | 662 | |
d19cf32f | 663 | dbg("SEP Driver:--------> sep_prepare_input_dma_table start\n"); |
cd1bb431 | 664 | |
d19cf32f AC |
665 | edbg("SEP Driver:data_size is %lu\n", data_size); |
666 | edbg("SEP Driver:block_size is %lu\n", block_size); | |
cd1bb431 | 667 | |
d19cf32f AC |
668 | /* initialize the pages pointers */ |
669 | sep_dev->in_page_array = 0; | |
670 | sep_dev->in_num_pages = 0; | |
cd1bb431 | 671 | |
d19cf32f AC |
672 | if (data_size == 0) { |
673 | /* special case - created 2 entries table with zero data */ | |
674 | in_lli_table_ptr = (struct sep_lli_entry_t *) (sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES); | |
675 | in_lli_table_ptr->physical_address = sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
676 | in_lli_table_ptr->block_size = 0; | |
cd1bb431 | 677 | |
d19cf32f AC |
678 | in_lli_table_ptr++; |
679 | in_lli_table_ptr->physical_address = 0xFFFFFFFF; | |
680 | in_lli_table_ptr->block_size = 0; | |
cd1bb431 | 681 | |
d19cf32f AC |
682 | *lli_table_ptr = sep_dev->phys_shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
683 | *num_entries_ptr = 2; | |
684 | *table_data_size_ptr = 0; | |
cd1bb431 | 685 | |
d19cf32f | 686 | goto end_function; |
cd1bb431 MA |
687 | } |
688 | ||
d19cf32f AC |
689 | /* check if the pages are in Kernel Virtual Address layout */ |
690 | if (isKernelVirtualAddress == true) | |
691 | /* lock the pages of the kernel buffer and translate them to pages */ | |
692 | result = sep_lock_kernel_pages(app_virt_addr, data_size, &sep_dev->in_num_pages, &lli_array_ptr, &sep_dev->in_page_array); | |
693 | else | |
694 | /* lock the pages of the user buffer and translate them to pages */ | |
695 | result = sep_lock_user_pages(app_virt_addr, data_size, &sep_dev->in_num_pages, &lli_array_ptr, &sep_dev->in_page_array); | |
696 | ||
697 | if (result) | |
698 | return result; | |
699 | ||
700 | edbg("SEP Driver:output sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages); | |
701 | ||
702 | current_entry = 0; | |
703 | info_entry_ptr = 0; | |
704 | sep_lli_entries = sep_dev->in_num_pages; | |
cd1bb431 | 705 | |
d19cf32f AC |
706 | /* initiate to point after the message area */ |
707 | lli_table_alloc_addr = sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 708 | |
d19cf32f AC |
709 | /* loop till all the entries in in array are not processed */ |
710 | while (current_entry < sep_lli_entries) { | |
711 | /* set the new input and output tables */ | |
712 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 713 | |
d19cf32f | 714 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
cd1bb431 | 715 | |
d19cf32f AC |
716 | /* calculate the maximum size of data for input table */ |
717 | table_data_size = sep_calculate_lli_table_max_size(&lli_array_ptr[current_entry], (sep_lli_entries - current_entry)); | |
cd1bb431 | 718 | |
d19cf32f AC |
719 | /* now calculate the table size so that it will be module block size */ |
720 | table_data_size = (table_data_size / block_size) * block_size; | |
721 | ||
722 | edbg("SEP Driver:output table_data_size is %lu\n", table_data_size); | |
723 | ||
724 | /* construct input lli table */ | |
725 | sep_build_lli_table(&lli_array_ptr[current_entry], in_lli_table_ptr, ¤t_entry, &num_entries_in_table, table_data_size); | |
726 | ||
727 | if (info_entry_ptr == 0) { | |
728 | /* set the output parameters to physical addresses */ | |
729 | *lli_table_ptr = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
730 | *num_entries_ptr = num_entries_in_table; | |
731 | *table_data_size_ptr = table_data_size; | |
732 | ||
733 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_ptr); | |
734 | } else { | |
735 | /* update the info entry of the previous in table */ | |
736 | info_entry_ptr->physical_address = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
737 | info_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); | |
738 | } | |
739 | ||
740 | /* save the pointer to the info entry of the current tables */ | |
741 | info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
742 | } | |
743 | ||
744 | /* print input tables */ | |
745 | sep_debug_print_lli_tables((struct sep_lli_entry_t *) | |
746 | sep_shared_area_phys_to_virt(*lli_table_ptr), *num_entries_ptr, *table_data_size_ptr); | |
747 | ||
748 | /* the array of the pages */ | |
749 | kfree(lli_array_ptr); | |
f93e4bf9 | 750 | end_function: |
d19cf32f | 751 | dbg("SEP Driver:<-------- sep_prepare_input_dma_table end\n"); |
d19cf32f | 752 | return 0; |
cd1bb431 MA |
753 | |
754 | } | |
755 | ||
756 | /* | |
757 | This function builds input and output DMA tables for synhronic | |
758 | symmetric operations (AES, DES). It also checks that each table | |
759 | is of the modular block size | |
760 | */ | |
d19cf32f AC |
761 | int sep_prepare_input_output_dma_table(unsigned long app_virt_in_addr, |
762 | unsigned long app_virt_out_addr, | |
763 | unsigned long data_size, | |
764 | unsigned long block_size, | |
765 | unsigned long *lli_table_in_ptr, unsigned long *lli_table_out_ptr, unsigned long *in_num_entries_ptr, unsigned long *out_num_entries_ptr, unsigned long *table_data_size_ptr, bool isKernelVirtualAddress) | |
cd1bb431 | 766 | { |
d19cf32f AC |
767 | /* array of pointers of page */ |
768 | struct sep_lli_entry_t *lli_in_array; | |
d19cf32f AC |
769 | /* array of pointers of page */ |
770 | struct sep_lli_entry_t *lli_out_array; | |
f93e4bf9 | 771 | int result = 0; |
cd1bb431 | 772 | |
d19cf32f | 773 | dbg("SEP Driver:--------> sep_prepare_input_output_dma_table start\n"); |
cd1bb431 | 774 | |
d19cf32f AC |
775 | /* initialize the pages pointers */ |
776 | sep_dev->in_page_array = 0; | |
777 | sep_dev->out_page_array = 0; | |
cd1bb431 | 778 | |
d19cf32f AC |
779 | /* check if the pages are in Kernel Virtual Address layout */ |
780 | if (isKernelVirtualAddress == true) { | |
781 | /* lock the pages of the kernel buffer and translate them to pages */ | |
782 | result = sep_lock_kernel_pages(app_virt_in_addr, data_size, &sep_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array); | |
783 | if (result) { | |
784 | edbg("SEP Driver: sep_lock_kernel_pages for input virtual buffer failed\n"); | |
785 | goto end_function; | |
786 | } | |
787 | } else { | |
788 | /* lock the pages of the user buffer and translate them to pages */ | |
789 | result = sep_lock_user_pages(app_virt_in_addr, data_size, &sep_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array); | |
790 | if (result) { | |
791 | edbg("SEP Driver: sep_lock_user_pages for input virtual buffer failed\n"); | |
792 | goto end_function; | |
793 | } | |
cd1bb431 | 794 | } |
d19cf32f AC |
795 | |
796 | if (isKernelVirtualAddress == true) { | |
797 | result = sep_lock_kernel_pages(app_virt_out_addr, data_size, &sep_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array); | |
798 | if (result) { | |
799 | edbg("SEP Driver: sep_lock_kernel_pages for output virtual buffer failed\n"); | |
800 | goto end_function_with_error1; | |
801 | } | |
802 | } else { | |
803 | result = sep_lock_user_pages(app_virt_out_addr, data_size, &sep_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array); | |
804 | if (result) { | |
805 | edbg("SEP Driver: sep_lock_user_pages for output virtual buffer failed\n"); | |
806 | goto end_function_with_error1; | |
807 | } | |
cd1bb431 | 808 | } |
d19cf32f AC |
809 | edbg("sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages); |
810 | edbg("sep_dev->out_num_pages is %lu\n", sep_dev->out_num_pages); | |
811 | edbg("SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n", SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); | |
cd1bb431 MA |
812 | |
813 | ||
d19cf32f AC |
814 | /* call the fucntion that creates table from the lli arrays */ |
815 | result = sep_construct_dma_tables_from_lli(lli_in_array, sep_dev->in_num_pages, lli_out_array, sep_dev->out_num_pages, block_size, lli_table_in_ptr, lli_table_out_ptr, in_num_entries_ptr, out_num_entries_ptr, table_data_size_ptr); | |
816 | if (result) { | |
817 | edbg("SEP Driver: sep_construct_dma_tables_from_lli failed\n"); | |
818 | goto end_function_with_error2; | |
819 | } | |
cd1bb431 | 820 | |
d19cf32f | 821 | /* fall through - free the lli entry arrays */ |
d19cf32f AC |
822 | dbg("in_num_entries_ptr is %08lx\n", *in_num_entries_ptr); |
823 | dbg("out_num_entries_ptr is %08lx\n", *out_num_entries_ptr); | |
824 | dbg("table_data_size_ptr is %08lx\n", *table_data_size_ptr); | |
f93e4bf9 | 825 | end_function_with_error2: |
d19cf32f | 826 | kfree(lli_out_array); |
f93e4bf9 | 827 | end_function_with_error1: |
d19cf32f | 828 | kfree(lli_in_array); |
f93e4bf9 | 829 | end_function: |
d19cf32f | 830 | dbg("SEP Driver:<-------- sep_prepare_input_output_dma_table end result = %d\n", (int) result); |
d19cf32f | 831 | return result; |
cd1bb431 MA |
832 | |
833 | } | |
834 | ||
835 | ||
836 | /* | |
837 | This function creates the input and output dma tables for | |
838 | symmetric operations (AES/DES) according to the block size from LLI arays | |
839 | */ | |
d19cf32f AC |
840 | int sep_construct_dma_tables_from_lli(struct sep_lli_entry_t *lli_in_array, |
841 | unsigned long sep_in_lli_entries, | |
842 | struct sep_lli_entry_t *lli_out_array, | |
843 | unsigned long sep_out_lli_entries, | |
844 | unsigned long block_size, unsigned long *lli_table_in_ptr, unsigned long *lli_table_out_ptr, unsigned long *in_num_entries_ptr, unsigned long *out_num_entries_ptr, unsigned long *table_data_size_ptr) | |
cd1bb431 | 845 | { |
d19cf32f AC |
846 | /* points to the area where next lli table can be allocated */ |
847 | unsigned long lli_table_alloc_addr; | |
d19cf32f AC |
848 | /* input lli table */ |
849 | struct sep_lli_entry_t *in_lli_table_ptr; | |
d19cf32f AC |
850 | /* output lli table */ |
851 | struct sep_lli_entry_t *out_lli_table_ptr; | |
d19cf32f AC |
852 | /* pointer to the info entry of the table - the last entry */ |
853 | struct sep_lli_entry_t *info_in_entry_ptr; | |
d19cf32f AC |
854 | /* pointer to the info entry of the table - the last entry */ |
855 | struct sep_lli_entry_t *info_out_entry_ptr; | |
d19cf32f AC |
856 | /* points to the first entry to be processed in the lli_in_array */ |
857 | unsigned long current_in_entry; | |
d19cf32f AC |
858 | /* points to the first entry to be processed in the lli_out_array */ |
859 | unsigned long current_out_entry; | |
d19cf32f AC |
860 | /* max size of the input table */ |
861 | unsigned long in_table_data_size; | |
d19cf32f AC |
862 | /* max size of the output table */ |
863 | unsigned long out_table_data_size; | |
d19cf32f AC |
864 | /* flag te signifies if this is the first tables build from the arrays */ |
865 | unsigned long first_table_flag; | |
d19cf32f AC |
866 | /* the data size that should be in table */ |
867 | unsigned long table_data_size; | |
d19cf32f AC |
868 | /* number of etnries in the input table */ |
869 | unsigned long num_entries_in_table; | |
d19cf32f AC |
870 | /* number of etnries in the output table */ |
871 | unsigned long num_entries_out_table; | |
cd1bb431 | 872 | |
d19cf32f AC |
873 | dbg("SEP Driver:--------> sep_construct_dma_tables_from_lli start\n"); |
874 | ||
875 | /* initiate to pint after the message area */ | |
876 | lli_table_alloc_addr = sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
877 | ||
878 | current_in_entry = 0; | |
879 | current_out_entry = 0; | |
880 | first_table_flag = 1; | |
881 | info_in_entry_ptr = 0; | |
882 | info_out_entry_ptr = 0; | |
883 | ||
884 | /* loop till all the entries in in array are not processed */ | |
885 | while (current_in_entry < sep_in_lli_entries) { | |
886 | /* set the new input and output tables */ | |
887 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
888 | ||
889 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; | |
890 | ||
891 | /* set the first output tables */ | |
892 | out_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
893 | ||
894 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; | |
895 | ||
896 | /* calculate the maximum size of data for input table */ | |
897 | in_table_data_size = sep_calculate_lli_table_max_size(&lli_in_array[current_in_entry], (sep_in_lli_entries - current_in_entry)); | |
898 | ||
899 | /* calculate the maximum size of data for output table */ | |
900 | out_table_data_size = sep_calculate_lli_table_max_size(&lli_out_array[current_out_entry], (sep_out_lli_entries - current_out_entry)); | |
901 | ||
902 | edbg("SEP Driver:in_table_data_size is %lu\n", in_table_data_size); | |
903 | edbg("SEP Driver:out_table_data_size is %lu\n", out_table_data_size); | |
904 | ||
905 | /* check where the data is smallest */ | |
906 | table_data_size = in_table_data_size; | |
907 | if (table_data_size > out_table_data_size) | |
908 | table_data_size = out_table_data_size; | |
909 | ||
910 | /* now calculate the table size so that it will be module block size */ | |
911 | table_data_size = (table_data_size / block_size) * block_size; | |
912 | ||
913 | dbg("SEP Driver:table_data_size is %lu\n", table_data_size); | |
914 | ||
915 | /* construct input lli table */ | |
916 | sep_build_lli_table(&lli_in_array[current_in_entry], in_lli_table_ptr, ¤t_in_entry, &num_entries_in_table, table_data_size); | |
917 | ||
918 | /* construct output lli table */ | |
919 | sep_build_lli_table(&lli_out_array[current_out_entry], out_lli_table_ptr, ¤t_out_entry, &num_entries_out_table, table_data_size); | |
920 | ||
921 | /* if info entry is null - this is the first table built */ | |
922 | if (info_in_entry_ptr == 0) { | |
923 | /* set the output parameters to physical addresses */ | |
924 | *lli_table_in_ptr = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
925 | *in_num_entries_ptr = num_entries_in_table; | |
926 | *lli_table_out_ptr = sep_shared_area_virt_to_phys((unsigned long) out_lli_table_ptr); | |
927 | *out_num_entries_ptr = num_entries_out_table; | |
928 | *table_data_size_ptr = table_data_size; | |
929 | ||
930 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr); | |
931 | edbg("SEP Driver:output lli_table_out_ptr is %08lx\n", *lli_table_out_ptr); | |
932 | } else { | |
933 | /* update the info entry of the previous in table */ | |
934 | info_in_entry_ptr->physical_address = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
935 | info_in_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); | |
936 | ||
937 | /* update the info entry of the previous in table */ | |
938 | info_out_entry_ptr->physical_address = sep_shared_area_virt_to_phys((unsigned long) out_lli_table_ptr); | |
939 | info_out_entry_ptr->block_size = ((num_entries_out_table) << 24) | (table_data_size); | |
940 | } | |
941 | ||
942 | /* save the pointer to the info entry of the current tables */ | |
943 | info_in_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
944 | info_out_entry_ptr = out_lli_table_ptr + num_entries_out_table - 1; | |
945 | ||
946 | edbg("SEP Driver:output num_entries_out_table is %lu\n", (unsigned long) num_entries_out_table); | |
947 | edbg("SEP Driver:output info_in_entry_ptr is %lu\n", (unsigned long) info_in_entry_ptr); | |
948 | edbg("SEP Driver:output info_out_entry_ptr is %lu\n", (unsigned long) info_out_entry_ptr); | |
cd1bb431 MA |
949 | } |
950 | ||
d19cf32f AC |
951 | /* print input tables */ |
952 | sep_debug_print_lli_tables((struct sep_lli_entry_t *) | |
953 | sep_shared_area_phys_to_virt(*lli_table_in_ptr), *in_num_entries_ptr, *table_data_size_ptr); | |
d19cf32f AC |
954 | /* print output tables */ |
955 | sep_debug_print_lli_tables((struct sep_lli_entry_t *) | |
956 | sep_shared_area_phys_to_virt(*lli_table_out_ptr), *out_num_entries_ptr, *table_data_size_ptr); | |
d19cf32f | 957 | dbg("SEP Driver:<-------- sep_construct_dma_tables_from_lli end\n"); |
d19cf32f | 958 | return 0; |
cd1bb431 MA |
959 | } |
960 | ||
961 | /* | |
962 | this function calculates the size of data that can be inserted into the lli | |
963 | table from this array the condition is that either the table is full | |
964 | (all etnries are entered), or there are no more entries in the lli array | |
965 | */ | |
d19cf32f | 966 | unsigned long sep_calculate_lli_table_max_size(struct sep_lli_entry_t *lli_in_array_ptr, unsigned long num_array_entries) |
cd1bb431 | 967 | { |
f93e4bf9 | 968 | unsigned long table_data_size = 0; |
d19cf32f | 969 | unsigned long counter; |
cd1bb431 | 970 | |
d19cf32f AC |
971 | /* calculate the data in the out lli table if till we fill the whole |
972 | table or till the data has ended */ | |
973 | for (counter = 0; (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) && (counter < num_array_entries); counter++) | |
974 | table_data_size += lli_in_array_ptr[counter].block_size; | |
d19cf32f | 975 | return table_data_size; |
cd1bb431 MA |
976 | } |
977 | ||
978 | /* | |
979 | this functions builds ont lli table from the lli_array according to | |
980 | the given size of data | |
981 | */ | |
d19cf32f | 982 | static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, struct sep_lli_entry_t *lli_table_ptr, unsigned long *num_processed_entries_ptr, unsigned long *num_table_entries_ptr, unsigned long table_data_size) |
cd1bb431 | 983 | { |
d19cf32f | 984 | unsigned long curr_table_data_size; |
d19cf32f AC |
985 | /* counter of lli array entry */ |
986 | unsigned long array_counter; | |
cd1bb431 | 987 | |
d19cf32f AC |
988 | dbg("SEP Driver:--------> sep_build_lli_table start\n"); |
989 | ||
990 | /* init currrent table data size and lli array entry counter */ | |
991 | curr_table_data_size = 0; | |
992 | array_counter = 0; | |
993 | *num_table_entries_ptr = 1; | |
994 | ||
995 | edbg("SEP Driver:table_data_size is %lu\n", table_data_size); | |
996 | ||
997 | /* fill the table till table size reaches the needed amount */ | |
998 | while (curr_table_data_size < table_data_size) { | |
999 | /* update the number of entries in table */ | |
1000 | (*num_table_entries_ptr)++; | |
1001 | ||
1002 | lli_table_ptr->physical_address = lli_array_ptr[array_counter].physical_address; | |
1003 | lli_table_ptr->block_size = lli_array_ptr[array_counter].block_size; | |
1004 | curr_table_data_size += lli_table_ptr->block_size; | |
1005 | ||
1006 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1007 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1008 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1009 | ||
1010 | /* check for overflow of the table data */ | |
1011 | if (curr_table_data_size > table_data_size) { | |
1012 | edbg("SEP Driver:curr_table_data_size > table_data_size\n"); | |
1013 | ||
1014 | /* update the size of block in the table */ | |
1015 | lli_table_ptr->block_size -= (curr_table_data_size - table_data_size); | |
1016 | ||
1017 | /* update the physical address in the lli array */ | |
1018 | lli_array_ptr[array_counter].physical_address += lli_table_ptr->block_size; | |
1019 | ||
1020 | /* update the block size left in the lli array */ | |
1021 | lli_array_ptr[array_counter].block_size = (curr_table_data_size - table_data_size); | |
1022 | } else | |
1023 | /* advance to the next entry in the lli_array */ | |
1024 | array_counter++; | |
1025 | ||
1026 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1027 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1028 | ||
1029 | /* move to the next entry in table */ | |
1030 | lli_table_ptr++; | |
1031 | } | |
1032 | ||
1033 | /* set the info entry to default */ | |
1034 | lli_table_ptr->physical_address = 0xffffffff; | |
1035 | lli_table_ptr->block_size = 0; | |
1036 | ||
1037 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1038 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1039 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1040 | ||
d19cf32f AC |
1041 | /* set the output parameter */ |
1042 | *num_processed_entries_ptr += array_counter; | |
1043 | ||
1044 | edbg("SEP Driver:*num_processed_entries_ptr is %lu\n", *num_processed_entries_ptr); | |
d19cf32f | 1045 | dbg("SEP Driver:<-------- sep_build_lli_table end\n"); |
d19cf32f | 1046 | return; |
cd1bb431 MA |
1047 | } |
1048 | ||
1049 | /* | |
1050 | this function goes over the list of the print created tables and | |
1051 | prints all the data | |
1052 | */ | |
d19cf32f | 1053 | static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, unsigned long num_table_entries, unsigned long table_data_size) |
cd1bb431 | 1054 | { |
d19cf32f | 1055 | unsigned long table_count; |
d19cf32f | 1056 | unsigned long entries_count; |
cd1bb431 | 1057 | |
d19cf32f | 1058 | dbg("SEP Driver:--------> sep_debug_print_lli_tables start\n"); |
cd1bb431 | 1059 | |
d19cf32f AC |
1060 | table_count = 1; |
1061 | while ((unsigned long) lli_table_ptr != 0xffffffff) { | |
1062 | edbg("SEP Driver: lli table %08lx, table_data_size is %lu\n", table_count, table_data_size); | |
1063 | edbg("SEP Driver: num_table_entries is %lu\n", num_table_entries); | |
cd1bb431 | 1064 | |
d19cf32f AC |
1065 | /* print entries of the table (without info entry) */ |
1066 | for (entries_count = 0; entries_count < num_table_entries; entries_count++, lli_table_ptr++) { | |
1067 | edbg("SEP Driver:lli_table_ptr address is %08lx\n", (unsigned long) lli_table_ptr); | |
1068 | edbg("SEP Driver:phys address is %08lx block size is %lu\n", lli_table_ptr->physical_address, lli_table_ptr->block_size); | |
1069 | } | |
cd1bb431 | 1070 | |
d19cf32f AC |
1071 | /* point to the info entry */ |
1072 | lli_table_ptr--; | |
cd1bb431 | 1073 | |
d19cf32f AC |
1074 | edbg("SEP Driver:phys lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); |
1075 | edbg("SEP Driver:phys lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
cd1bb431 | 1076 | |
cd1bb431 | 1077 | |
d19cf32f AC |
1078 | table_data_size = lli_table_ptr->block_size & 0xffffff; |
1079 | num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff; | |
1080 | lli_table_ptr = (struct sep_lli_entry_t *) | |
1081 | (lli_table_ptr->physical_address); | |
cd1bb431 | 1082 | |
d19cf32f | 1083 | edbg("SEP Driver:phys table_data_size is %lu num_table_entries is %lu lli_table_ptr is%lu\n", table_data_size, num_table_entries, (unsigned long) lli_table_ptr); |
cd1bb431 | 1084 | |
d19cf32f AC |
1085 | if ((unsigned long) lli_table_ptr != 0xffffffff) |
1086 | lli_table_ptr = (struct sep_lli_entry_t *) sep_shared_area_phys_to_virt((unsigned long) lli_table_ptr); | |
1087 | ||
1088 | table_count++; | |
1089 | } | |
d19cf32f | 1090 | dbg("SEP Driver:<-------- sep_debug_print_lli_tables end\n"); |
cd1bb431 MA |
1091 | } |
1092 | ||
1093 | ||
1094 | /* | |
1095 | This function locks all the physical pages of the application virtual buffer | |
1096 | and construct a basic lli array, where each entry holds the physical page | |
1097 | address and the size that application data holds in this physical pages | |
1098 | */ | |
d19cf32f | 1099 | int sep_lock_user_pages(unsigned long app_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr) |
cd1bb431 | 1100 | { |
f93e4bf9 | 1101 | int error = 0; |
d19cf32f AC |
1102 | /* the the page of the end address of the user space buffer */ |
1103 | unsigned long end_page; | |
d19cf32f AC |
1104 | /* the page of the start address of the user space buffer */ |
1105 | unsigned long start_page; | |
d19cf32f AC |
1106 | /* the range in pages */ |
1107 | unsigned long num_pages; | |
d19cf32f | 1108 | struct page **page_array; |
d19cf32f | 1109 | struct sep_lli_entry_t *lli_array; |
d19cf32f | 1110 | unsigned long count; |
d19cf32f | 1111 | int result; |
cd1bb431 | 1112 | |
d19cf32f AC |
1113 | dbg("SEP Driver:--------> sep_lock_user_pages start\n"); |
1114 | ||
d19cf32f AC |
1115 | /* set start and end pages and num pages */ |
1116 | end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
1117 | start_page = app_virt_addr >> PAGE_SHIFT; | |
1118 | num_pages = end_page - start_page + 1; | |
1119 | ||
1120 | edbg("SEP Driver: app_virt_addr is %08lx\n", app_virt_addr); | |
1121 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
1122 | edbg("SEP Driver: start_page is %lu\n", start_page); | |
1123 | edbg("SEP Driver: end_page is %lu\n", end_page); | |
1124 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
1125 | ||
1126 | /* allocate array of pages structure pointers */ | |
1127 | page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); | |
1128 | if (!page_array) { | |
1129 | edbg("SEP Driver: kmalloc for page_array failed\n"); | |
1130 | ||
1131 | error = -ENOMEM; | |
1132 | goto end_function; | |
cd1bb431 | 1133 | } |
cd1bb431 | 1134 | |
d19cf32f AC |
1135 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
1136 | if (!lli_array) { | |
1137 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
cd1bb431 | 1138 | |
d19cf32f AC |
1139 | error = -ENOMEM; |
1140 | goto end_function_with_error1; | |
1141 | } | |
cd1bb431 | 1142 | |
d19cf32f AC |
1143 | /* convert the application virtual address into a set of physical */ |
1144 | down_read(¤t->mm->mmap_sem); | |
1145 | result = get_user_pages(current, current->mm, app_virt_addr, num_pages, 1, 0, page_array, 0); | |
1146 | up_read(¤t->mm->mmap_sem); | |
cd1bb431 | 1147 | |
d19cf32f AC |
1148 | /* check the number of pages locked - if not all then exit with error */ |
1149 | if (result != num_pages) { | |
1150 | dbg("SEP Driver: not all pages locked by get_user_pages\n"); | |
cd1bb431 | 1151 | |
d19cf32f AC |
1152 | error = -ENOMEM; |
1153 | goto end_function_with_error2; | |
1154 | } | |
1155 | ||
1156 | /* flush the cache */ | |
1157 | for (count = 0; count < num_pages; count++) | |
1158 | flush_dcache_page(page_array[count]); | |
1159 | ||
1160 | /* set the start address of the first page - app data may start not at | |
1161 | the beginning of the page */ | |
1162 | lli_array[0].physical_address = ((unsigned long) page_to_phys(page_array[0])) + (app_virt_addr & (~PAGE_MASK)); | |
1163 | ||
1164 | /* check that not all the data is in the first page only */ | |
1165 | if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size) | |
1166 | lli_array[0].block_size = data_size; | |
1167 | else | |
1168 | lli_array[0].block_size = PAGE_SIZE - (app_virt_addr & (~PAGE_MASK)); | |
1169 | ||
1170 | /* debug print */ | |
1171 | dbg("lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", lli_array[0].physical_address, lli_array[0].block_size); | |
1172 | ||
1173 | /* go from the second page to the prev before last */ | |
1174 | for (count = 1; count < (num_pages - 1); count++) { | |
1175 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
1176 | lli_array[count].block_size = PAGE_SIZE; | |
1177 | ||
f93e4bf9 | 1178 | edbg("lli_array[%lu].physical_address is %08lx, lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); |
d19cf32f AC |
1179 | } |
1180 | ||
1181 | /* if more then 1 pages locked - then update for the last page size needed */ | |
1182 | if (num_pages > 1) { | |
1183 | /* update the address of the last page */ | |
1184 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
1185 | ||
1186 | /* set the size of the last page */ | |
1187 | lli_array[count].block_size = (app_virt_addr + data_size) & (~PAGE_MASK); | |
1188 | ||
1189 | if (lli_array[count].block_size == 0) { | |
1190 | dbg("app_virt_addr is %08lx\n", app_virt_addr); | |
1191 | dbg("data_size is %lu\n", data_size); | |
1192 | while (1); | |
1193 | } | |
1194 | edbg("lli_array[%lu].physical_address is %08lx, \ | |
1195 | lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); | |
1196 | } | |
1197 | ||
1198 | /* set output params */ | |
1199 | *lli_array_ptr = lli_array; | |
1200 | *num_pages_ptr = num_pages; | |
1201 | *page_array_ptr = page_array; | |
d19cf32f AC |
1202 | goto end_function; |
1203 | ||
f93e4bf9 | 1204 | end_function_with_error2: |
d19cf32f AC |
1205 | /* release the cache */ |
1206 | for (count = 0; count < num_pages; count++) | |
1207 | page_cache_release(page_array[count]); | |
d19cf32f | 1208 | kfree(lli_array); |
f93e4bf9 | 1209 | end_function_with_error1: |
d19cf32f | 1210 | kfree(page_array); |
f93e4bf9 | 1211 | end_function: |
d19cf32f | 1212 | dbg("SEP Driver:<-------- sep_lock_user_pages end\n"); |
d19cf32f | 1213 | return 0; |
cd1bb431 MA |
1214 | } |
1215 | ||
1216 | /* | |
1217 | This function locks all the physical pages of the kernel virtual buffer | |
1218 | and construct a basic lli array, where each entry holds the physical | |
1219 | page address and the size that application data holds in this physical pages | |
1220 | */ | |
d19cf32f | 1221 | int sep_lock_kernel_pages(unsigned long kernel_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr) |
cd1bb431 | 1222 | { |
f93e4bf9 | 1223 | int error = 0; |
d19cf32f AC |
1224 | /* the the page of the end address of the user space buffer */ |
1225 | unsigned long end_page; | |
d19cf32f AC |
1226 | /* the page of the start address of the user space buffer */ |
1227 | unsigned long start_page; | |
d19cf32f AC |
1228 | /* the range in pages */ |
1229 | unsigned long num_pages; | |
d19cf32f | 1230 | struct sep_lli_entry_t *lli_array; |
d19cf32f AC |
1231 | /* next kernel address to map */ |
1232 | unsigned long next_kernel_address; | |
d19cf32f | 1233 | unsigned long count; |
cd1bb431 | 1234 | |
d19cf32f AC |
1235 | dbg("SEP Driver:--------> sep_lock_kernel_pages start\n"); |
1236 | ||
d19cf32f AC |
1237 | /* set start and end pages and num pages */ |
1238 | end_page = (kernel_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
1239 | start_page = kernel_virt_addr >> PAGE_SHIFT; | |
1240 | num_pages = end_page - start_page + 1; | |
1241 | ||
1242 | edbg("SEP Driver: kernel_virt_addr is %08lx\n", kernel_virt_addr); | |
1243 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
1244 | edbg("SEP Driver: start_page is %lx\n", start_page); | |
1245 | edbg("SEP Driver: end_page is %lx\n", end_page); | |
1246 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
1247 | ||
1248 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); | |
1249 | if (!lli_array) { | |
1250 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
d19cf32f AC |
1251 | error = -ENOMEM; |
1252 | goto end_function; | |
cd1bb431 MA |
1253 | } |
1254 | ||
d19cf32f AC |
1255 | /* set the start address of the first page - app data may start not at |
1256 | the beginning of the page */ | |
1257 | lli_array[0].physical_address = (unsigned long) virt_to_phys((unsigned long *) kernel_virt_addr); | |
cd1bb431 | 1258 | |
d19cf32f AC |
1259 | /* check that not all the data is in the first page only */ |
1260 | if ((PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK))) >= data_size) | |
1261 | lli_array[0].block_size = data_size; | |
1262 | else | |
1263 | lli_array[0].block_size = PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK)); | |
cd1bb431 | 1264 | |
d19cf32f AC |
1265 | /* debug print */ |
1266 | dbg("lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", lli_array[0].physical_address, lli_array[0].block_size); | |
1267 | ||
1268 | /* advance the address to the start of the next page */ | |
1269 | next_kernel_address = (kernel_virt_addr & PAGE_MASK) + PAGE_SIZE; | |
1270 | ||
1271 | /* go from the second page to the prev before last */ | |
1272 | for (count = 1; count < (num_pages - 1); count++) { | |
1273 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
1274 | lli_array[count].block_size = PAGE_SIZE; | |
1275 | ||
f93e4bf9 | 1276 | edbg("lli_array[%lu].physical_address is %08lx, lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); |
d19cf32f AC |
1277 | next_kernel_address += PAGE_SIZE; |
1278 | } | |
cd1bb431 | 1279 | |
d19cf32f AC |
1280 | /* if more then 1 pages locked - then update for the last page size needed */ |
1281 | if (num_pages > 1) { | |
1282 | /* update the address of the last page */ | |
1283 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
cd1bb431 | 1284 | |
d19cf32f AC |
1285 | /* set the size of the last page */ |
1286 | lli_array[count].block_size = (kernel_virt_addr + data_size) & (~PAGE_MASK); | |
cd1bb431 | 1287 | |
d19cf32f AC |
1288 | if (lli_array[count].block_size == 0) { |
1289 | dbg("app_virt_addr is %08lx\n", kernel_virt_addr); | |
1290 | dbg("data_size is %lu\n", data_size); | |
1291 | while (1); | |
1292 | } | |
1293 | ||
f93e4bf9 | 1294 | edbg("lli_array[%lu].physical_address is %08lx, lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); |
d19cf32f | 1295 | } |
d19cf32f AC |
1296 | /* set output params */ |
1297 | *lli_array_ptr = lli_array; | |
1298 | *num_pages_ptr = num_pages; | |
1299 | *page_array_ptr = 0; | |
f93e4bf9 | 1300 | end_function: |
d19cf32f | 1301 | dbg("SEP Driver:<-------- sep_lock_kernel_pages end\n"); |
d19cf32f | 1302 | return 0; |
cd1bb431 MA |
1303 | } |
1304 | ||
1305 | /* | |
1306 | This function releases all the application virtual buffer physical pages, | |
1307 | that were previously locked | |
1308 | */ | |
d19cf32f | 1309 | int sep_free_dma_pages(struct page **page_array_ptr, unsigned long num_pages, unsigned long dirtyFlag) |
cd1bb431 | 1310 | { |
d19cf32f | 1311 | unsigned long count; |
cd1bb431 | 1312 | |
d19cf32f AC |
1313 | if (dirtyFlag) { |
1314 | for (count = 0; count < num_pages; count++) { | |
1315 | /* the out array was written, therefore the data was changed */ | |
1316 | if (!PageReserved(page_array_ptr[count])) | |
1317 | SetPageDirty(page_array_ptr[count]); | |
1318 | page_cache_release(page_array_ptr[count]); | |
1319 | } | |
1320 | } else { | |
1321 | /* free in pages - the data was only read, therefore no update was done | |
1322 | on those pages */ | |
1323 | for (count = 0; count < num_pages; count++) | |
1324 | page_cache_release(page_array_ptr[count]); | |
cd1bb431 | 1325 | } |
cd1bb431 | 1326 | |
d19cf32f AC |
1327 | if (page_array_ptr) |
1328 | /* free the array */ | |
1329 | kfree(page_array_ptr); | |
cd1bb431 | 1330 | |
d19cf32f | 1331 | return 0; |
cd1bb431 MA |
1332 | } |
1333 | ||
1334 | /* | |
1335 | This function raises interrupt to SEP that signals that is has a new | |
1336 | command from HOST | |
1337 | */ | |
1338 | static void sep_send_command_handler() | |
1339 | { | |
d19cf32f | 1340 | unsigned long count; |
cd1bb431 | 1341 | |
d19cf32f | 1342 | dbg("SEP Driver:--------> sep_send_command_handler start\n"); |
d19cf32f | 1343 | sep_set_time(0, 0); |
cd1bb431 | 1344 | |
d19cf32f AC |
1345 | /* flash cache */ |
1346 | flush_cache_all(); | |
cd1bb431 | 1347 | |
d19cf32f AC |
1348 | for (count = 0; count < 12 * 4; count += 4) |
1349 | edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count))); | |
cd1bb431 | 1350 | |
d19cf32f AC |
1351 | /* update counter */ |
1352 | sep_dev->host_to_sep_send_counter++; | |
d19cf32f AC |
1353 | /* send interrupt to SEP */ |
1354 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); | |
d19cf32f | 1355 | dbg("SEP Driver:<-------- sep_send_command_handler end\n"); |
d19cf32f | 1356 | return; |
cd1bb431 MA |
1357 | } |
1358 | ||
1359 | /* | |
1360 | This function raises interrupt to SEPm that signals that is has a | |
1361 | new command from HOST | |
1362 | */ | |
1363 | static void sep_send_reply_command_handler() | |
1364 | { | |
d19cf32f | 1365 | unsigned long count; |
cd1bb431 | 1366 | |
d19cf32f | 1367 | dbg("SEP Driver:--------> sep_send_reply_command_handler start\n"); |
cd1bb431 | 1368 | |
d19cf32f AC |
1369 | /* flash cache */ |
1370 | flush_cache_all(); | |
d19cf32f AC |
1371 | for (count = 0; count < 12 * 4; count += 4) |
1372 | edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count))); | |
d19cf32f AC |
1373 | /* update counter */ |
1374 | sep_dev->host_to_sep_send_counter++; | |
d19cf32f AC |
1375 | /* send the interrupt to SEP */ |
1376 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep_dev->host_to_sep_send_counter); | |
d19cf32f AC |
1377 | /* update both counters */ |
1378 | sep_dev->host_to_sep_send_counter++; | |
d19cf32f | 1379 | sep_dev->sep_to_host_reply_counter++; |
d19cf32f | 1380 | dbg("SEP Driver:<-------- sep_send_reply_command_handler end\n"); |
cd1bb431 MA |
1381 | } |
1382 | ||
1383 | ||
1384 | ||
1385 | /* | |
1386 | This function handles the allocate data pool memory request | |
1387 | This function returns calculates the physical address of the | |
1388 | allocated memory, and the offset of this area from the mapped address. | |
1389 | Therefore, the FVOs in user space can calculate the exact virtual | |
1390 | address of this allocated memory | |
1391 | */ | |
1392 | static int sep_allocate_data_pool_memory_handler(unsigned long arg) | |
1393 | { | |
d19cf32f | 1394 | int error; |
d19cf32f | 1395 | struct sep_driver_alloc_t command_args; |
cd1bb431 | 1396 | |
d19cf32f | 1397 | dbg("SEP Driver:--------> sep_allocate_data_pool_memory_handler start\n"); |
cd1bb431 | 1398 | |
d19cf32f AC |
1399 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_alloc_t)); |
1400 | if (error) | |
1401 | goto end_function; | |
cd1bb431 | 1402 | |
d19cf32f AC |
1403 | /* allocate memory */ |
1404 | if ((sep_dev->data_pool_bytes_allocated + command_args.num_bytes) > SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { | |
1405 | error = -ENOTTY; | |
1406 | goto end_function; | |
1407 | } | |
1408 | ||
1409 | /* set the virtual and physical address */ | |
1410 | command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep_dev->data_pool_bytes_allocated; | |
1411 | command_args.phys_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep_dev->data_pool_bytes_allocated; | |
cd1bb431 | 1412 | |
d19cf32f AC |
1413 | /* write the memory back to the user space */ |
1414 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_alloc_t)); | |
1415 | if (error) | |
1416 | goto end_function; | |
cd1bb431 | 1417 | |
d19cf32f AC |
1418 | /* set the allocation */ |
1419 | sep_dev->data_pool_bytes_allocated += command_args.num_bytes; | |
cd1bb431 | 1420 | |
f93e4bf9 | 1421 | end_function: |
d19cf32f | 1422 | dbg("SEP Driver:<-------- sep_allocate_data_pool_memory_handler end\n"); |
d19cf32f | 1423 | return error; |
cd1bb431 MA |
1424 | } |
1425 | ||
1426 | /* | |
1427 | This function handles write into allocated data pool command | |
1428 | */ | |
1429 | static int sep_write_into_data_pool_handler(unsigned long arg) | |
1430 | { | |
d19cf32f | 1431 | int error; |
d19cf32f | 1432 | unsigned long virt_address; |
d19cf32f | 1433 | unsigned long app_in_address; |
d19cf32f | 1434 | unsigned long num_bytes; |
d19cf32f | 1435 | unsigned long data_pool_area_addr; |
cd1bb431 | 1436 | |
d19cf32f | 1437 | dbg("SEP Driver:--------> sep_write_into_data_pool_handler start\n"); |
cd1bb431 | 1438 | |
d19cf32f AC |
1439 | /* get the application address */ |
1440 | error = get_user(app_in_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
1441 | if (error) | |
1442 | goto end_function; | |
cd1bb431 | 1443 | |
d19cf32f AC |
1444 | /* get the virtual kernel address address */ |
1445 | error = get_user(virt_address, &(((struct sep_driver_write_t *) arg)->datapool_address)); | |
1446 | if (error) | |
1447 | goto end_function; | |
cd1bb431 | 1448 | |
d19cf32f AC |
1449 | /* get the number of bytes */ |
1450 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
1451 | if (error) | |
1452 | goto end_function; | |
cd1bb431 | 1453 | |
d19cf32f AC |
1454 | /* calculate the start of the data pool */ |
1455 | data_pool_area_addr = sep_dev->shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; | |
cd1bb431 MA |
1456 | |
1457 | ||
d19cf32f AC |
1458 | /* check that the range of the virtual kernel address is correct */ |
1459 | if ((virt_address < data_pool_area_addr) || (virt_address > (data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { | |
1460 | error = -ENOTTY; | |
1461 | goto end_function; | |
1462 | } | |
d19cf32f AC |
1463 | /* copy the application data */ |
1464 | error = copy_from_user((void *) virt_address, (void *) app_in_address, num_bytes); | |
f93e4bf9 | 1465 | end_function: |
d19cf32f | 1466 | dbg("SEP Driver:<-------- sep_write_into_data_pool_handler end\n"); |
d19cf32f | 1467 | return error; |
cd1bb431 MA |
1468 | } |
1469 | ||
1470 | /* | |
1471 | this function handles the read from data pool command | |
1472 | */ | |
1473 | static int sep_read_from_data_pool_handler(unsigned long arg) | |
1474 | { | |
d19cf32f | 1475 | int error; |
d19cf32f AC |
1476 | /* virtual address of dest application buffer */ |
1477 | unsigned long app_out_address; | |
d19cf32f AC |
1478 | /* virtual address of the data pool */ |
1479 | unsigned long virt_address; | |
d19cf32f | 1480 | unsigned long num_bytes; |
d19cf32f | 1481 | unsigned long data_pool_area_addr; |
cd1bb431 | 1482 | |
d19cf32f | 1483 | dbg("SEP Driver:--------> sep_read_from_data_pool_handler start\n"); |
cd1bb431 | 1484 | |
d19cf32f AC |
1485 | /* get the application address */ |
1486 | error = get_user(app_out_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
1487 | if (error) | |
1488 | goto end_function; | |
cd1bb431 | 1489 | |
d19cf32f AC |
1490 | /* get the virtual kernel address address */ |
1491 | error = get_user(virt_address, &(((struct sep_driver_write_t *) arg)->datapool_address)); | |
1492 | if (error) | |
1493 | goto end_function; | |
cd1bb431 | 1494 | |
d19cf32f AC |
1495 | /* get the number of bytes */ |
1496 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
1497 | if (error) | |
1498 | goto end_function; | |
cd1bb431 | 1499 | |
d19cf32f AC |
1500 | /* calculate the start of the data pool */ |
1501 | data_pool_area_addr = sep_dev->shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 1502 | |
d19cf32f AC |
1503 | /* check that the range of the virtual kernel address is correct */ |
1504 | if ((virt_address < data_pool_area_addr) || (virt_address > (data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { | |
1505 | error = -ENOTTY; | |
1506 | goto end_function; | |
1507 | } | |
cd1bb431 | 1508 | |
d19cf32f AC |
1509 | /* copy the application data */ |
1510 | error = copy_to_user((void *) app_out_address, (void *) virt_address, num_bytes); | |
f93e4bf9 | 1511 | end_function: |
d19cf32f | 1512 | dbg("SEP Driver:<-------- sep_read_from_data_pool_handler end\n"); |
d19cf32f | 1513 | return error; |
cd1bb431 MA |
1514 | } |
1515 | ||
1516 | ||
1517 | /* | |
1518 | this function handles tha request for creation of the DMA table | |
1519 | for the synchronic symmetric operations (AES,DES) | |
1520 | */ | |
1521 | static int sep_create_sync_dma_tables_handler(unsigned long arg) | |
1522 | { | |
d19cf32f | 1523 | int error; |
d19cf32f AC |
1524 | /* command arguments */ |
1525 | struct sep_driver_build_sync_table_t command_args; | |
cd1bb431 | 1526 | |
d19cf32f | 1527 | dbg("SEP Driver:--------> sep_create_sync_dma_tables_handler start\n"); |
cd1bb431 | 1528 | |
d19cf32f AC |
1529 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_sync_table_t)); |
1530 | if (error) | |
1531 | goto end_function; | |
cd1bb431 | 1532 | |
d19cf32f AC |
1533 | edbg("app_in_address is %08lx\n", command_args.app_in_address); |
1534 | edbg("app_out_address is %08lx\n", command_args.app_out_address); | |
1535 | edbg("data_size is %lu\n", command_args.data_in_size); | |
1536 | edbg("block_size is %lu\n", command_args.block_size); | |
1537 | ||
d19cf32f AC |
1538 | /* check if we need to build only input table or input/output */ |
1539 | if (command_args.app_out_address) | |
1540 | /* prepare input and output tables */ | |
1541 | error = sep_prepare_input_output_dma_table(command_args.app_in_address, | |
1542 | command_args.app_out_address, | |
1543 | command_args.data_in_size, | |
1544 | command_args.block_size, | |
1545 | &command_args.in_table_address, | |
1546 | &command_args.out_table_address, &command_args.in_table_num_entries, &command_args.out_table_num_entries, &command_args.table_data_size, command_args.isKernelVirtualAddress); | |
1547 | else | |
1548 | /* prepare input tables */ | |
1549 | error = sep_prepare_input_dma_table(command_args.app_in_address, | |
1550 | command_args.data_in_size, command_args.block_size, &command_args.in_table_address, &command_args.in_table_num_entries, &command_args.table_data_size, command_args.isKernelVirtualAddress); | |
cd1bb431 | 1551 | |
d19cf32f AC |
1552 | if (error) |
1553 | goto end_function; | |
d19cf32f AC |
1554 | /* copy to user */ |
1555 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_build_sync_table_t)); | |
f93e4bf9 | 1556 | end_function: |
d19cf32f | 1557 | dbg("SEP Driver:<-------- sep_create_sync_dma_tables_handler end\n"); |
d19cf32f | 1558 | return error; |
cd1bb431 MA |
1559 | } |
1560 | ||
1561 | /* | |
1562 | this function handles the request for freeing dma table for synhronic actions | |
1563 | */ | |
1564 | int sep_free_dma_table_data_handler() | |
1565 | { | |
d19cf32f | 1566 | dbg("SEP Driver:--------> sep_free_dma_table_data_handler start\n"); |
cd1bb431 | 1567 | |
d19cf32f AC |
1568 | /* free input pages array */ |
1569 | sep_free_dma_pages(sep_dev->in_page_array, sep_dev->in_num_pages, 0); | |
cd1bb431 | 1570 | |
d19cf32f AC |
1571 | /* free output pages array if needed */ |
1572 | if (sep_dev->out_page_array) | |
1573 | sep_free_dma_pages(sep_dev->out_page_array, sep_dev->out_num_pages, 1); | |
cd1bb431 | 1574 | |
d19cf32f AC |
1575 | /* reset all the values */ |
1576 | sep_dev->in_page_array = 0; | |
1577 | sep_dev->out_page_array = 0; | |
1578 | sep_dev->in_num_pages = 0; | |
1579 | sep_dev->out_num_pages = 0; | |
d19cf32f | 1580 | dbg("SEP Driver:<-------- sep_free_dma_table_data_handler end\n"); |
d19cf32f | 1581 | return 0; |
cd1bb431 MA |
1582 | } |
1583 | ||
1584 | /* | |
1585 | this function handles the request to create the DMA tables for flow | |
1586 | */ | |
1587 | static int sep_create_flow_dma_tables_handler(unsigned long arg) | |
1588 | { | |
d19cf32f | 1589 | int error; |
d19cf32f | 1590 | struct sep_driver_build_flow_table_t command_args; |
d19cf32f AC |
1591 | /* first table - output */ |
1592 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1593 | /* dma table data */ |
1594 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1595 | /* pointer to the info entry of the previuos DMA table */ |
1596 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
d19cf32f AC |
1597 | /* pointer to the flow data strucutre */ |
1598 | struct sep_flow_context_t *flow_context_ptr; | |
cd1bb431 | 1599 | |
d19cf32f | 1600 | dbg("SEP Driver:--------> sep_create_flow_dma_tables_handler start\n"); |
cd1bb431 | 1601 | |
d19cf32f AC |
1602 | /* init variables */ |
1603 | prev_info_entry_ptr = 0; | |
1604 | first_table_data.physical_address = 0xffffffff; | |
cd1bb431 | 1605 | |
d19cf32f AC |
1606 | /* find the free structure for flow data */ |
1607 | error = sep_find_flow_context(SEP_FREE_FLOW_ID, &flow_context_ptr); | |
1608 | if (error) | |
1609 | goto end_function; | |
cd1bb431 | 1610 | |
d19cf32f AC |
1611 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_flow_table_t)); |
1612 | if (error) | |
1613 | goto end_function; | |
cd1bb431 | 1614 | |
d19cf32f AC |
1615 | /* create flow tables */ |
1616 | error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, command_args.virt_buff_data_addr, flow_context_ptr, &first_table_data, &last_table_data, command_args.isKernelVirtualAddress); | |
1617 | if (error) | |
1618 | goto end_function_with_error; | |
cd1bb431 | 1619 | |
d19cf32f AC |
1620 | /* check if flow is static */ |
1621 | if (!command_args.flow_type) | |
1622 | /* point the info entry of the last to the info entry of the first */ | |
1623 | last_table_data = first_table_data; | |
cd1bb431 | 1624 | |
d19cf32f AC |
1625 | /* set output params */ |
1626 | command_args.first_table_addr = first_table_data.physical_address; | |
1627 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1628 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1629 | |
d19cf32f AC |
1630 | /* send the parameters to user application */ |
1631 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_build_flow_table_t)); | |
1632 | if (error) | |
1633 | goto end_function_with_error; | |
cd1bb431 | 1634 | |
d19cf32f AC |
1635 | /* all the flow created - update the flow entry with temp id */ |
1636 | flow_context_ptr->flow_id = SEP_TEMP_FLOW_ID; | |
cd1bb431 | 1637 | |
d19cf32f AC |
1638 | /* set the processing tables data in the context */ |
1639 | if (command_args.input_output_flag == SEP_DRIVER_IN_FLAG) | |
1640 | flow_context_ptr->input_tables_in_process = first_table_data; | |
1641 | else | |
1642 | flow_context_ptr->output_tables_in_process = first_table_data; | |
cd1bb431 | 1643 | |
d19cf32f | 1644 | goto end_function; |
cd1bb431 | 1645 | |
f93e4bf9 | 1646 | end_function_with_error: |
d19cf32f AC |
1647 | /* free the allocated tables */ |
1648 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1649 | end_function: |
d19cf32f | 1650 | dbg("SEP Driver:<-------- sep_create_flow_dma_tables_handler end\n"); |
d19cf32f | 1651 | return error; |
cd1bb431 MA |
1652 | } |
1653 | ||
1654 | /* | |
1655 | this functio n handles add tables to flow | |
1656 | */ | |
1657 | static int sep_add_flow_tables_handler(unsigned long arg) | |
1658 | { | |
d19cf32f | 1659 | int error; |
d19cf32f | 1660 | unsigned long num_entries; |
d19cf32f | 1661 | struct sep_driver_add_flow_table_t command_args; |
d19cf32f | 1662 | struct sep_flow_context_t *flow_context_ptr; |
d19cf32f AC |
1663 | /* first dma table data */ |
1664 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1665 | /* last dma table data */ |
1666 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1667 | /* pointer to the info entry of the current DMA table */ |
1668 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1669 | |
d19cf32f | 1670 | dbg("SEP Driver:--------> sep_add_flow_tables_handler start\n"); |
cd1bb431 | 1671 | |
d19cf32f AC |
1672 | /* get input parameters */ |
1673 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_flow_table_t)); | |
1674 | if (error) | |
1675 | goto end_function; | |
cd1bb431 | 1676 | |
d19cf32f AC |
1677 | /* find the flow structure for the flow id */ |
1678 | error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); | |
1679 | if (error) | |
1680 | goto end_function; | |
cd1bb431 | 1681 | |
d19cf32f AC |
1682 | /* prepare the flow dma tables */ |
1683 | error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, command_args.virt_buff_data_addr, flow_context_ptr, &first_table_data, &last_table_data, command_args.isKernelVirtualAddress); | |
1684 | if (error) | |
1685 | goto end_function_with_error; | |
cd1bb431 | 1686 | |
d19cf32f AC |
1687 | /* now check if there is already an existing add table for this flow */ |
1688 | if (command_args.inputOutputFlag == SEP_DRIVER_IN_FLAG) { | |
1689 | /* this buffer was for input buffers */ | |
1690 | if (flow_context_ptr->input_tables_flag) { | |
1691 | /* add table already exists - add the new tables to the end | |
1692 | of the previous */ | |
1693 | num_entries = (flow_context_ptr->last_input_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1694 | ||
1695 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1696 | (flow_context_ptr->last_input_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1697 | ||
1698 | /* connect to list of tables */ | |
1699 | *info_entry_ptr = first_table_data; | |
1700 | ||
1701 | /* set the first table data */ | |
1702 | first_table_data = flow_context_ptr->first_input_table; | |
1703 | } else { | |
1704 | /* set the input flag */ | |
1705 | flow_context_ptr->input_tables_flag = 1; | |
1706 | ||
1707 | /* set the first table data */ | |
1708 | flow_context_ptr->first_input_table = first_table_data; | |
1709 | } | |
1710 | /* set the last table data */ | |
1711 | flow_context_ptr->last_input_table = last_table_data; | |
1712 | } else { /* this is output tables */ | |
1713 | ||
1714 | /* this buffer was for input buffers */ | |
1715 | if (flow_context_ptr->output_tables_flag) { | |
1716 | /* add table already exists - add the new tables to | |
1717 | the end of the previous */ | |
1718 | num_entries = (flow_context_ptr->last_output_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1719 | ||
1720 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1721 | (flow_context_ptr->last_output_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1722 | ||
1723 | /* connect to list of tables */ | |
1724 | *info_entry_ptr = first_table_data; | |
1725 | ||
1726 | /* set the first table data */ | |
1727 | first_table_data = flow_context_ptr->first_output_table; | |
1728 | } else { | |
1729 | /* set the input flag */ | |
1730 | flow_context_ptr->output_tables_flag = 1; | |
1731 | ||
1732 | /* set the first table data */ | |
1733 | flow_context_ptr->first_output_table = first_table_data; | |
1734 | } | |
1735 | /* set the last table data */ | |
1736 | flow_context_ptr->last_output_table = last_table_data; | |
cd1bb431 | 1737 | } |
cd1bb431 | 1738 | |
d19cf32f AC |
1739 | /* set output params */ |
1740 | command_args.first_table_addr = first_table_data.physical_address; | |
1741 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1742 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1743 | |
d19cf32f AC |
1744 | /* send the parameters to user application */ |
1745 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_add_flow_table_t)); | |
f93e4bf9 | 1746 | end_function_with_error: |
d19cf32f AC |
1747 | /* free the allocated tables */ |
1748 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1749 | end_function: |
d19cf32f | 1750 | dbg("SEP Driver:<-------- sep_add_flow_tables_handler end\n"); |
d19cf32f | 1751 | return error; |
cd1bb431 MA |
1752 | } |
1753 | ||
1754 | /* | |
1755 | this function add the flow add message to the specific flow | |
1756 | */ | |
1757 | static int sep_add_flow_tables_message_handler(unsigned long arg) | |
1758 | { | |
d19cf32f | 1759 | int error; |
d19cf32f | 1760 | struct sep_driver_add_message_t command_args; |
d19cf32f | 1761 | struct sep_flow_context_t *flow_context_ptr; |
cd1bb431 | 1762 | |
d19cf32f | 1763 | dbg("SEP Driver:--------> sep_add_flow_tables_message_handler start\n"); |
cd1bb431 | 1764 | |
d19cf32f AC |
1765 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_message_t)); |
1766 | if (error) | |
1767 | goto end_function; | |
cd1bb431 | 1768 | |
d19cf32f AC |
1769 | /* check input */ |
1770 | if (command_args.message_size_in_bytes > SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES) { | |
1771 | error = -ENOMEM; | |
1772 | goto end_function; | |
1773 | } | |
cd1bb431 | 1774 | |
d19cf32f AC |
1775 | /* find the flow context */ |
1776 | error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); | |
1777 | if (error) | |
1778 | goto end_function; | |
cd1bb431 | 1779 | |
d19cf32f AC |
1780 | /* copy the message into context */ |
1781 | flow_context_ptr->message_size_in_bytes = command_args.message_size_in_bytes; | |
d19cf32f | 1782 | error = copy_from_user(flow_context_ptr->message, (void *) command_args.message_address, command_args.message_size_in_bytes); |
f93e4bf9 | 1783 | end_function: |
d19cf32f | 1784 | dbg("SEP Driver:<-------- sep_add_flow_tables_message_handler end\n"); |
d19cf32f | 1785 | return error; |
cd1bb431 MA |
1786 | } |
1787 | ||
1788 | ||
1789 | /* | |
1790 | this function returns the physical and virtual addresses of the static pool | |
1791 | */ | |
1792 | static int sep_get_static_pool_addr_handler(unsigned long arg) | |
1793 | { | |
d19cf32f | 1794 | int error; |
d19cf32f | 1795 | struct sep_driver_static_pool_addr_t command_args; |
cd1bb431 | 1796 | |
d19cf32f | 1797 | dbg("SEP Driver:--------> sep_get_static_pool_addr_handler start\n"); |
cd1bb431 | 1798 | |
d19cf32f AC |
1799 | /*prepare the output parameters in the struct */ |
1800 | command_args.physical_static_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
1801 | command_args.virtual_static_address = sep_dev->shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 1802 | |
d19cf32f | 1803 | edbg("SEP Driver:physical_static_address is %08lx, virtual_static_address %08lx\n", command_args.physical_static_address, command_args.virtual_static_address); |
cd1bb431 | 1804 | |
d19cf32f AC |
1805 | /* send the parameters to user application */ |
1806 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_static_pool_addr_t)); | |
d19cf32f | 1807 | dbg("SEP Driver:<-------- sep_get_static_pool_addr_handler end\n"); |
d19cf32f | 1808 | return error; |
cd1bb431 MA |
1809 | } |
1810 | ||
1811 | /* | |
1812 | this address gets the offset of the physical address from the start | |
1813 | of the mapped area | |
1814 | */ | |
1815 | static int sep_get_physical_mapped_offset_handler(unsigned long arg) | |
1816 | { | |
d19cf32f | 1817 | int error; |
d19cf32f | 1818 | struct sep_driver_get_mapped_offset_t command_args; |
cd1bb431 | 1819 | |
d19cf32f | 1820 | dbg("SEP Driver:--------> sep_get_physical_mapped_offset_handler start\n"); |
cd1bb431 | 1821 | |
d19cf32f AC |
1822 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_get_mapped_offset_t)); |
1823 | if (error) | |
1824 | goto end_function; | |
cd1bb431 | 1825 | |
d19cf32f AC |
1826 | if (command_args.physical_address < sep_dev->phys_shared_area_addr) { |
1827 | error = -ENOTTY; | |
1828 | goto end_function; | |
1829 | } | |
cd1bb431 | 1830 | |
d19cf32f AC |
1831 | /*prepare the output parameters in the struct */ |
1832 | command_args.offset = command_args.physical_address - sep_dev->phys_shared_area_addr; | |
cd1bb431 | 1833 | |
d19cf32f | 1834 | edbg("SEP Driver:physical_address is %08lx, offset is %lu\n", command_args.physical_address, command_args.offset); |
cd1bb431 | 1835 | |
d19cf32f AC |
1836 | /* send the parameters to user application */ |
1837 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_get_mapped_offset_t)); | |
f93e4bf9 | 1838 | end_function: |
d19cf32f | 1839 | dbg("SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n"); |
d19cf32f | 1840 | return error; |
cd1bb431 MA |
1841 | } |
1842 | ||
1843 | ||
1844 | /* | |
1845 | ? | |
1846 | */ | |
1847 | static int sep_start_handler(void) | |
1848 | { | |
d19cf32f | 1849 | unsigned long reg_val; |
f93e4bf9 | 1850 | unsigned long error = 0; |
cd1bb431 | 1851 | |
d19cf32f | 1852 | dbg("SEP Driver:--------> sep_start_handler start\n"); |
cd1bb431 | 1853 | |
d19cf32f | 1854 | /* wait in polling for message from SEP */ |
f93e4bf9 | 1855 | do |
d19cf32f | 1856 | reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 1857 | while (!reg_val); |
cd1bb431 | 1858 | |
d19cf32f | 1859 | /* check the value */ |
43e8c4a3 | 1860 | if (reg_val == 0x1) |
d19cf32f AC |
1861 | /* fatal error - read erro status from GPRO */ |
1862 | error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
f93e4bf9 | 1863 | end_function: |
d19cf32f | 1864 | dbg("SEP Driver:<-------- sep_start_handler end\n"); |
d19cf32f | 1865 | return error; |
cd1bb431 MA |
1866 | } |
1867 | ||
1868 | /* | |
1869 | this function handles the request for SEP initialization | |
1870 | */ | |
1871 | static int sep_init_handler(unsigned long arg) | |
1872 | { | |
d19cf32f | 1873 | unsigned long message_word; |
d19cf32f | 1874 | unsigned long *message_ptr; |
d19cf32f | 1875 | struct sep_driver_init_t command_args; |
d19cf32f | 1876 | unsigned long counter; |
d19cf32f | 1877 | unsigned long error; |
d19cf32f | 1878 | unsigned long reg_val; |
cd1bb431 | 1879 | |
d19cf32f | 1880 | dbg("SEP Driver:--------> sep_init_handler start\n"); |
d19cf32f | 1881 | error = 0; |
cd1bb431 | 1882 | |
d19cf32f | 1883 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_init_t)); |
cd1bb431 | 1884 | |
d19cf32f | 1885 | dbg("SEP Driver:--------> sep_init_handler - finished copy_from_user \n"); |
cd1bb431 | 1886 | |
d19cf32f AC |
1887 | if (error) |
1888 | goto end_function; | |
cd1bb431 | 1889 | |
d19cf32f AC |
1890 | /* PATCH - configure the DMA to single -burst instead of multi-burst */ |
1891 | /*sep_configure_dma_burst(); */ | |
cd1bb431 | 1892 | |
d19cf32f | 1893 | dbg("SEP Driver:--------> sep_init_handler - finished sep_configure_dma_burst \n"); |
cd1bb431 | 1894 | |
d19cf32f | 1895 | message_ptr = (unsigned long *) command_args.message_addr; |
cd1bb431 | 1896 | |
d19cf32f AC |
1897 | /* set the base address of the SRAM */ |
1898 | sep_write_reg(sep_dev, HW_SRAM_ADDR_REG_ADDR, HW_CC_SRAM_BASE_ADDRESS); | |
cd1bb431 | 1899 | |
d19cf32f AC |
1900 | for (counter = 0; counter < command_args.message_size_in_words; counter++, message_ptr++) { |
1901 | get_user(message_word, message_ptr); | |
d19cf32f AC |
1902 | /* write data to SRAM */ |
1903 | sep_write_reg(sep_dev, HW_SRAM_DATA_REG_ADDR, message_word); | |
d19cf32f | 1904 | edbg("SEP Driver:message_word is %lu\n", message_word); |
cd1bb431 | 1905 | /* wait for write complete */ |
d19cf32f AC |
1906 | sep_wait_sram_write(sep_dev); |
1907 | } | |
d19cf32f | 1908 | dbg("SEP Driver:--------> sep_init_handler - finished getting messages from user space\n"); |
d19cf32f AC |
1909 | /* signal SEP */ |
1910 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1); | |
cd1bb431 | 1911 | |
f93e4bf9 | 1912 | do |
d19cf32f | 1913 | reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 1914 | while (!(reg_val & 0xFFFFFFFD)); |
cd1bb431 | 1915 | |
d19cf32f | 1916 | dbg("SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n"); |
cd1bb431 | 1917 | |
d19cf32f AC |
1918 | /* check the value */ |
1919 | if (reg_val == 0x1) { | |
1920 | edbg("SEP Driver:init failed\n"); | |
cd1bb431 | 1921 | |
d19cf32f AC |
1922 | error = sep_read_reg(sep_dev, 0x8060); |
1923 | edbg("SEP Driver:sw monitor is %lu\n", error); | |
cd1bb431 | 1924 | |
d19cf32f AC |
1925 | /* fatal error - read erro status from GPRO */ |
1926 | error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
1927 | edbg("SEP Driver:error is %lu\n", error); | |
d19cf32f | 1928 | } |
f93e4bf9 | 1929 | end_function: |
d19cf32f | 1930 | dbg("SEP Driver:<-------- sep_init_handler end\n"); |
d19cf32f | 1931 | return error; |
cd1bb431 MA |
1932 | |
1933 | } | |
1934 | ||
1935 | /* | |
1936 | this function handles the request cache and resident reallocation | |
1937 | */ | |
1938 | static int sep_realloc_cache_resident_handler(unsigned long arg) | |
1939 | { | |
d19cf32f | 1940 | int error; |
d19cf32f | 1941 | unsigned long phys_cache_address; |
d19cf32f | 1942 | unsigned long phys_resident_address; |
d19cf32f | 1943 | struct sep_driver_realloc_cache_resident_t command_args; |
cd1bb431 | 1944 | |
d19cf32f AC |
1945 | /* copy the data */ |
1946 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_realloc_cache_resident_t)); | |
1947 | if (error) | |
1948 | goto end_function; | |
cd1bb431 | 1949 | |
d19cf32f AC |
1950 | /* copy cache and resident to the their intended locations */ |
1951 | error = sep_copy_cache_resident_to_area(command_args.cache_addr, command_args.cache_size_in_bytes, command_args.resident_addr, command_args.resident_size_in_bytes, &phys_cache_address, &phys_resident_address); | |
1952 | if (error) | |
1953 | goto end_function; | |
cd1bb431 | 1954 | |
d19cf32f AC |
1955 | /* lock the area (if needed) */ |
1956 | sep_lock_cache_resident_area(); | |
cd1bb431 | 1957 | |
d19cf32f | 1958 | command_args.new_base_addr = sep_dev->phys_shared_area_addr; |
cd1bb431 | 1959 | |
d19cf32f AC |
1960 | /* find the new base address according to the lowest address between |
1961 | cache, resident and shared area */ | |
1962 | if (phys_resident_address < command_args.new_base_addr) | |
1963 | command_args.new_base_addr = phys_resident_address; | |
1964 | if (phys_cache_address < command_args.new_base_addr) | |
1965 | command_args.new_base_addr = phys_cache_address; | |
cd1bb431 | 1966 | |
d19cf32f AC |
1967 | /* set the return parameters */ |
1968 | command_args.new_cache_addr = phys_cache_address; | |
1969 | command_args.new_resident_addr = phys_resident_address; | |
cd1bb431 | 1970 | |
d19cf32f AC |
1971 | /* set the new shared area */ |
1972 | command_args.new_shared_area_addr = sep_dev->phys_shared_area_addr; | |
cd1bb431 | 1973 | |
d19cf32f AC |
1974 | edbg("SEP Driver:command_args.new_shared_area_addr is %08lx\n", command_args.new_shared_area_addr); |
1975 | edbg("SEP Driver:command_args.new_base_addr is %08lx\n", command_args.new_base_addr); | |
1976 | edbg("SEP Driver:command_args.new_resident_addr is %08lx\n", command_args.new_resident_addr); | |
1977 | edbg("SEP Driver:command_args.new_cache_addr is %08lx\n", command_args.new_cache_addr); | |
cd1bb431 | 1978 | |
d19cf32f AC |
1979 | /* return to user */ |
1980 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_realloc_cache_resident_t)); | |
f93e4bf9 | 1981 | end_function: |
d19cf32f | 1982 | return error; |
cd1bb431 MA |
1983 | } |
1984 | ||
1985 | /* | |
1986 | this function handles the request for get time | |
1987 | */ | |
1988 | static int sep_get_time_handler(unsigned long arg) | |
1989 | { | |
d19cf32f | 1990 | int error; |
d19cf32f | 1991 | struct sep_driver_get_time_t command_args; |
cd1bb431 | 1992 | |
d19cf32f | 1993 | error = sep_set_time(&command_args.time_physical_address, &command_args.time_value); |
d19cf32f | 1994 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_get_time_t)); |
d19cf32f | 1995 | return error; |
cd1bb431 MA |
1996 | |
1997 | } | |
1998 | ||
1999 | /* | |
2000 | This api handles the setting of API mode to blocking or non-blocking | |
2001 | */ | |
2002 | static int sep_set_api_mode_handler(unsigned long arg) | |
2003 | { | |
d19cf32f | 2004 | int error; |
d19cf32f | 2005 | unsigned long mode_flag; |
cd1bb431 | 2006 | |
d19cf32f | 2007 | dbg("SEP Driver:--------> sep_set_api_mode_handler start\n"); |
cd1bb431 | 2008 | |
d19cf32f AC |
2009 | error = get_user(mode_flag, &(((struct sep_driver_set_api_mode_t *) arg)->mode)); |
2010 | if (error) | |
2011 | goto end_function; | |
cd1bb431 | 2012 | |
d19cf32f AC |
2013 | /* set the global flag */ |
2014 | sep_dev->block_mode_flag = mode_flag; | |
f93e4bf9 | 2015 | end_function: |
d19cf32f | 2016 | dbg("SEP Driver:<-------- sep_set_api_mode_handler end\n"); |
d19cf32f | 2017 | return error; |
cd1bb431 MA |
2018 | } |
2019 | ||
2020 | /* | |
2021 | This API handles the end transaction request | |
2022 | */ | |
2023 | static int sep_end_transaction_handler(unsigned long arg) | |
2024 | { | |
d19cf32f | 2025 | dbg("SEP Driver:--------> sep_end_transaction_handler start\n"); |
cd1bb431 | 2026 | |
d19cf32f AC |
2027 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
2028 | /* close IMR */ | |
2029 | sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF); | |
cd1bb431 | 2030 | |
d19cf32f AC |
2031 | /* release IRQ line */ |
2032 | free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address); | |
cd1bb431 | 2033 | |
d19cf32f AC |
2034 | /* lock the sep mutex */ |
2035 | mutex_unlock(&sep_mutex); | |
cd1bb431 MA |
2036 | #endif |
2037 | ||
d19cf32f | 2038 | dbg("SEP Driver:<-------- sep_end_transaction_handler end\n"); |
cd1bb431 | 2039 | |
d19cf32f | 2040 | return 0; |
cd1bb431 MA |
2041 | } |
2042 | ||
2043 | /* handler for flow done interrupt */ | |
d19cf32f | 2044 | static void sep_flow_done_handler(struct work_struct *work) |
cd1bb431 | 2045 | { |
d19cf32f | 2046 | struct sep_flow_context_t *flow_data_ptr; |
cd1bb431 | 2047 | |
d19cf32f AC |
2048 | /* obtain the mutex */ |
2049 | mutex_lock(&sep_mutex); | |
cd1bb431 | 2050 | |
d19cf32f AC |
2051 | /* get the pointer to context */ |
2052 | flow_data_ptr = (struct sep_flow_context_t *) work; | |
cd1bb431 | 2053 | |
d19cf32f AC |
2054 | /* free all the current input tables in sep */ |
2055 | sep_deallocated_flow_tables(&flow_data_ptr->input_tables_in_process); | |
cd1bb431 | 2056 | |
d19cf32f AC |
2057 | /* free all the current tables output tables in SEP (if needed) */ |
2058 | if (flow_data_ptr->output_tables_in_process.physical_address != 0xffffffff) | |
2059 | sep_deallocated_flow_tables(&flow_data_ptr->output_tables_in_process); | |
cd1bb431 | 2060 | |
d19cf32f AC |
2061 | /* check if we have additional tables to be sent to SEP only input |
2062 | flag may be checked */ | |
2063 | if (flow_data_ptr->input_tables_flag) { | |
2064 | /* copy the message to the shared RAM and signal SEP */ | |
2065 | memcpy((void *) flow_data_ptr->message, (void *) sep_dev->shared_area_addr, flow_data_ptr->message_size_in_bytes); | |
cd1bb431 | 2066 | |
d19cf32f AC |
2067 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR2_REG_ADDR, 0x2); |
2068 | } | |
2069 | mutex_unlock(&sep_mutex); | |
cd1bb431 MA |
2070 | } |
2071 | ||
2072 | ||
2073 | /* | |
2074 | This function creates a list of tables for flow and returns the data for | |
2075 | the first and last tables of the list | |
2076 | */ | |
2077 | static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, | |
d19cf32f | 2078 | unsigned long first_buff_addr, struct sep_flow_context_t *flow_data_ptr, struct sep_lli_entry_t *first_table_data_ptr, struct sep_lli_entry_t *last_table_data_ptr, bool isKernelVirtualAddress) |
cd1bb431 | 2079 | { |
d19cf32f | 2080 | int error; |
d19cf32f | 2081 | unsigned long virt_buff_addr; |
d19cf32f | 2082 | unsigned long virt_buff_size; |
d19cf32f | 2083 | struct sep_lli_entry_t table_data; |
d19cf32f | 2084 | struct sep_lli_entry_t *info_entry_ptr; |
d19cf32f | 2085 | struct sep_lli_entry_t *prev_info_entry_ptr; |
d19cf32f | 2086 | unsigned long i; |
cd1bb431 | 2087 | |
d19cf32f AC |
2088 | /* init vars */ |
2089 | error = 0; | |
2090 | prev_info_entry_ptr = 0; | |
2091 | ||
2092 | /* init the first table to default */ | |
2093 | table_data.physical_address = 0xffffffff; | |
2094 | first_table_data_ptr->physical_address = 0xffffffff; | |
2095 | table_data.block_size = 0; | |
2096 | ||
2097 | for (i = 0; i < num_virtual_buffers; i++) { | |
2098 | /* get the virtual buffer address */ | |
2099 | error = get_user(virt_buff_addr, &first_buff_addr); | |
2100 | if (error) | |
2101 | goto end_function; | |
2102 | ||
2103 | /* get the virtual buffer size */ | |
2104 | first_buff_addr++; | |
2105 | error = get_user(virt_buff_size, &first_buff_addr); | |
2106 | if (error) | |
2107 | goto end_function; | |
2108 | ||
2109 | /* advance the address to point to the next pair of address|size */ | |
2110 | first_buff_addr++; | |
2111 | ||
2112 | /* now prepare the one flow LLI table from the data */ | |
2113 | error = sep_prepare_one_flow_dma_table(virt_buff_addr, virt_buff_size, &table_data, &info_entry_ptr, flow_data_ptr, isKernelVirtualAddress); | |
2114 | if (error) | |
2115 | goto end_function; | |
2116 | ||
2117 | if (i == 0) { | |
2118 | /* if this is the first table - save it to return to the user | |
2119 | application */ | |
2120 | *first_table_data_ptr = table_data; | |
2121 | ||
2122 | /* set the pointer to info entry */ | |
2123 | prev_info_entry_ptr = info_entry_ptr; | |
2124 | } else { | |
2125 | /* not first table - the previous table info entry should | |
2126 | be updated */ | |
2127 | prev_info_entry_ptr->block_size = (0x1 << SEP_INT_FLAG_OFFSET_IN_BITS) | (table_data.block_size); | |
2128 | ||
2129 | /* set the pointer to info entry */ | |
2130 | prev_info_entry_ptr = info_entry_ptr; | |
2131 | } | |
cd1bb431 | 2132 | } |
cd1bb431 | 2133 | |
d19cf32f AC |
2134 | /* set the last table data */ |
2135 | *last_table_data_ptr = table_data; | |
f93e4bf9 | 2136 | end_function: |
d19cf32f | 2137 | return error; |
cd1bb431 MA |
2138 | } |
2139 | ||
2140 | ||
2141 | /* | |
2142 | This function creates one DMA table for flow and returns its data, | |
2143 | and pointer to its info entry | |
2144 | */ | |
d19cf32f | 2145 | static int sep_prepare_one_flow_dma_table(unsigned long virt_buff_addr, unsigned long virt_buff_size, struct sep_lli_entry_t *table_data, struct sep_lli_entry_t **info_entry_ptr, struct sep_flow_context_t *flow_data_ptr, bool isKernelVirtualAddress) |
cd1bb431 | 2146 | { |
d19cf32f | 2147 | int error; |
d19cf32f AC |
2148 | /* the range in pages */ |
2149 | unsigned long lli_array_size; | |
d19cf32f | 2150 | struct sep_lli_entry_t *lli_array; |
d19cf32f | 2151 | struct sep_lli_entry_t *flow_dma_table_entry_ptr; |
d19cf32f | 2152 | unsigned long *start_dma_table_ptr; |
d19cf32f AC |
2153 | /* total table data counter */ |
2154 | unsigned long dma_table_data_count; | |
f93e4bf9 | 2155 | /* pointer that will keep the pointer to the pages of the virtual buffer */ |
d19cf32f | 2156 | struct page **page_array_ptr; |
d19cf32f | 2157 | unsigned long entry_count; |
cd1bb431 | 2158 | |
d19cf32f AC |
2159 | /* find the space for the new table */ |
2160 | error = sep_find_free_flow_dma_table_space(&start_dma_table_ptr); | |
2161 | if (error) | |
2162 | goto end_function; | |
cd1bb431 | 2163 | |
d19cf32f AC |
2164 | /* check if the pages are in Kernel Virtual Address layout */ |
2165 | if (isKernelVirtualAddress == true) | |
2166 | /* lock kernel buffer in the memory */ | |
2167 | error = sep_lock_kernel_pages(virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); | |
2168 | else | |
2169 | /* lock user buffer in the memory */ | |
2170 | error = sep_lock_user_pages(virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); | |
2171 | ||
2172 | if (error) | |
2173 | goto end_function; | |
cd1bb431 | 2174 | |
d19cf32f AC |
2175 | /* set the pointer to page array at the beginning of table - this table is |
2176 | now considered taken */ | |
2177 | *start_dma_table_ptr = lli_array_size; | |
cd1bb431 | 2178 | |
d19cf32f AC |
2179 | /* point to the place of the pages pointers of the table */ |
2180 | start_dma_table_ptr++; | |
cd1bb431 | 2181 | |
d19cf32f AC |
2182 | /* set the pages pointer */ |
2183 | *start_dma_table_ptr = (unsigned long) page_array_ptr; | |
cd1bb431 | 2184 | |
d19cf32f AC |
2185 | /* set the pointer to the first entry */ |
2186 | flow_dma_table_entry_ptr = (struct sep_lli_entry_t *) (++start_dma_table_ptr); | |
cd1bb431 | 2187 | |
d19cf32f AC |
2188 | /* now create the entries for table */ |
2189 | for (dma_table_data_count = entry_count = 0; entry_count < lli_array_size; entry_count++) { | |
2190 | flow_dma_table_entry_ptr->physical_address = lli_array[entry_count].physical_address; | |
cd1bb431 | 2191 | |
d19cf32f | 2192 | flow_dma_table_entry_ptr->block_size = lli_array[entry_count].block_size; |
cd1bb431 | 2193 | |
d19cf32f AC |
2194 | /* set the total data of a table */ |
2195 | dma_table_data_count += lli_array[entry_count].block_size; | |
cd1bb431 | 2196 | |
d19cf32f AC |
2197 | flow_dma_table_entry_ptr++; |
2198 | } | |
cd1bb431 | 2199 | |
d19cf32f AC |
2200 | /* set the physical address */ |
2201 | table_data->physical_address = virt_to_phys(start_dma_table_ptr); | |
cd1bb431 | 2202 | |
d19cf32f AC |
2203 | /* set the num_entries and total data size */ |
2204 | table_data->block_size = ((lli_array_size + 1) << SEP_NUM_ENTRIES_OFFSET_IN_BITS) | (dma_table_data_count); | |
cd1bb431 | 2205 | |
d19cf32f AC |
2206 | /* set the info entry */ |
2207 | flow_dma_table_entry_ptr->physical_address = 0xffffffff; | |
2208 | flow_dma_table_entry_ptr->block_size = 0; | |
cd1bb431 | 2209 | |
d19cf32f AC |
2210 | /* set the pointer to info entry */ |
2211 | *info_entry_ptr = flow_dma_table_entry_ptr; | |
cd1bb431 | 2212 | |
d19cf32f AC |
2213 | /* the array of the lli entries */ |
2214 | kfree(lli_array); | |
f93e4bf9 | 2215 | end_function: |
d19cf32f | 2216 | return error; |
cd1bb431 MA |
2217 | } |
2218 | ||
2219 | ||
2220 | /* | |
2221 | This function returns pointer to the flow data structure | |
f93e4bf9 | 2222 | that contains the given id |
cd1bb431 | 2223 | */ |
d19cf32f | 2224 | static int sep_find_flow_context(unsigned long flow_id, struct sep_flow_context_t **flow_data_ptr) |
cd1bb431 | 2225 | { |
d19cf32f | 2226 | unsigned long count; |
f93e4bf9 | 2227 | int error = 0; |
d19cf32f AC |
2228 | |
2229 | /* | |
2230 | always search for flow with id default first - in case we | |
2231 | already started working on the flow there can be no situation | |
2232 | when 2 flows are with default flag | |
2233 | */ | |
2234 | for (count = 0; count < SEP_DRIVER_NUM_FLOWS; count++) { | |
2235 | if (sep_dev->flows_data_array[count].flow_id == flow_id) { | |
2236 | *flow_data_ptr = &sep_dev->flows_data_array[count]; | |
2237 | break; | |
2238 | } | |
cd1bb431 | 2239 | } |
cd1bb431 | 2240 | |
d19cf32f AC |
2241 | if (count == SEP_DRIVER_NUM_FLOWS) |
2242 | /* no flow found */ | |
2243 | error = -ENOMEM; | |
cd1bb431 | 2244 | |
d19cf32f | 2245 | return error; |
cd1bb431 MA |
2246 | } |
2247 | ||
2248 | /* | |
2249 | this function find a space for the new flow dma table | |
2250 | */ | |
d19cf32f | 2251 | static int sep_find_free_flow_dma_table_space(unsigned long **table_address_ptr) |
cd1bb431 | 2252 | { |
f93e4bf9 | 2253 | int error = 0; |
d19cf32f AC |
2254 | /* pointer to the id field of the flow dma table */ |
2255 | unsigned long *start_table_ptr; | |
d19cf32f | 2256 | unsigned long flow_dma_area_start_addr; |
d19cf32f | 2257 | unsigned long flow_dma_area_end_addr; |
d19cf32f AC |
2258 | /* maximum table size in words */ |
2259 | unsigned long table_size_in_words; | |
cd1bb431 | 2260 | |
d19cf32f AC |
2261 | /* find the start address of the flow DMA table area */ |
2262 | flow_dma_area_start_addr = sep_dev->shared_area_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 2263 | |
d19cf32f AC |
2264 | /* set end address of the flow table area */ |
2265 | flow_dma_area_end_addr = flow_dma_area_start_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES; | |
cd1bb431 | 2266 | |
d19cf32f AC |
2267 | /* set table size in words */ |
2268 | table_size_in_words = SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE * (sizeof(struct sep_lli_entry_t) / sizeof(long)) + 2; | |
cd1bb431 | 2269 | |
d19cf32f AC |
2270 | /* set the pointer to the start address of DMA area */ |
2271 | start_table_ptr = (unsigned long *) flow_dma_area_start_addr; | |
cd1bb431 | 2272 | |
d19cf32f AC |
2273 | /* find the space for the next table */ |
2274 | while (((*start_table_ptr & 0x7FFFFFFF) != 0) && ((unsigned long) start_table_ptr < flow_dma_area_end_addr)) | |
2275 | start_table_ptr += table_size_in_words; | |
cd1bb431 | 2276 | |
d19cf32f AC |
2277 | /* check if we reached the end of floa tables area */ |
2278 | if ((unsigned long) start_table_ptr >= flow_dma_area_end_addr) | |
2279 | error = -1; | |
2280 | else | |
2281 | *table_address_ptr = start_table_ptr; | |
cd1bb431 | 2282 | |
d19cf32f | 2283 | return error; |
cd1bb431 MA |
2284 | } |
2285 | ||
2286 | /* | |
2287 | this function goes over all the flow tables connected to the given | |
2288 | table and deallocate them | |
2289 | */ | |
2290 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr) | |
2291 | { | |
f93e4bf9 | 2292 | /* id pointer */ |
d19cf32f | 2293 | unsigned long *table_ptr; |
d19cf32f AC |
2294 | /* end address of the flow dma area */ |
2295 | unsigned long num_entries; | |
d19cf32f | 2296 | unsigned long num_pages; |
d19cf32f | 2297 | struct page **pages_ptr; |
d19cf32f AC |
2298 | /* maximum table size in words */ |
2299 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 2300 | |
d19cf32f AC |
2301 | /* set the pointer to the first table */ |
2302 | table_ptr = (unsigned long *) first_table_ptr->physical_address; | |
cd1bb431 | 2303 | |
d19cf32f AC |
2304 | /* set the num of entries */ |
2305 | num_entries = (first_table_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) | |
2306 | & SEP_NUM_ENTRIES_MASK; | |
cd1bb431 | 2307 | |
d19cf32f AC |
2308 | /* go over all the connected tables */ |
2309 | while (*table_ptr != 0xffffffff) { | |
2310 | /* get number of pages */ | |
2311 | num_pages = *(table_ptr - 2); | |
cd1bb431 | 2312 | |
d19cf32f AC |
2313 | /* get the pointer to the pages */ |
2314 | pages_ptr = (struct page **) (*(table_ptr - 1)); | |
cd1bb431 | 2315 | |
d19cf32f AC |
2316 | /* free the pages */ |
2317 | sep_free_dma_pages(pages_ptr, num_pages, 1); | |
cd1bb431 | 2318 | |
d19cf32f AC |
2319 | /* goto to the info entry */ |
2320 | info_entry_ptr = ((struct sep_lli_entry_t *) table_ptr) + (num_entries - 1); | |
cd1bb431 | 2321 | |
d19cf32f AC |
2322 | table_ptr = (unsigned long *) info_entry_ptr->physical_address; |
2323 | num_entries = (info_entry_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
2324 | } | |
cd1bb431 | 2325 | |
d19cf32f | 2326 | return; |
cd1bb431 MA |
2327 | } |
2328 | ||
2329 | /* | |
2330 | This function handler the set flow id command | |
2331 | */ | |
2332 | static int sep_set_flow_id_handler(unsigned long arg) | |
2333 | { | |
d19cf32f | 2334 | int error; |
d19cf32f | 2335 | unsigned long flow_id; |
d19cf32f | 2336 | struct sep_flow_context_t *flow_data_ptr; |
cd1bb431 | 2337 | |
d19cf32f | 2338 | dbg("------------>SEP Driver: sep_set_flow_id_handler start\n"); |
cd1bb431 | 2339 | |
d19cf32f AC |
2340 | error = get_user(flow_id, &(((struct sep_driver_set_flow_id_t *) arg)->flow_id)); |
2341 | if (error) | |
2342 | goto end_function; | |
cd1bb431 | 2343 | |
d19cf32f AC |
2344 | /* find the flow data structure that was just used for creating new flow |
2345 | - its id should be default */ | |
2346 | error = sep_find_flow_context(SEP_TEMP_FLOW_ID, &flow_data_ptr); | |
2347 | if (error) | |
2348 | goto end_function; | |
cd1bb431 | 2349 | |
d19cf32f AC |
2350 | /* set flow id */ |
2351 | flow_data_ptr->flow_id = flow_id; | |
cd1bb431 | 2352 | |
f93e4bf9 | 2353 | end_function: |
d19cf32f | 2354 | dbg("SEP Driver:<-------- sep_set_flow_id_handler end\n"); |
d19cf32f | 2355 | return error; |
cd1bb431 MA |
2356 | } |
2357 | ||
2358 | ||
2359 | /* | |
2360 | calculates time and sets it at the predefined address | |
2361 | */ | |
d19cf32f | 2362 | static int sep_set_time(unsigned long *address_ptr, unsigned long *time_in_sec_ptr) |
cd1bb431 | 2363 | { |
d19cf32f | 2364 | struct timeval time; |
d19cf32f AC |
2365 | /* address of time in the kernel */ |
2366 | unsigned long time_addr; | |
cd1bb431 MA |
2367 | |
2368 | ||
d19cf32f | 2369 | dbg("SEP Driver:--------> sep_set_time start\n"); |
cd1bb431 | 2370 | |
d19cf32f | 2371 | do_gettimeofday(&time); |
cd1bb431 | 2372 | |
d19cf32f AC |
2373 | /* set value in the SYSTEM MEMORY offset */ |
2374 | time_addr = sep_dev->message_shared_area_addr + SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES; | |
cd1bb431 | 2375 | |
d19cf32f AC |
2376 | *(unsigned long *) time_addr = SEP_TIME_VAL_TOKEN; |
2377 | *(unsigned long *) (time_addr + 4) = time.tv_sec; | |
cd1bb431 | 2378 | |
d19cf32f AC |
2379 | edbg("SEP Driver:time.tv_sec is %lu\n", time.tv_sec); |
2380 | edbg("SEP Driver:time_addr is %lu\n", time_addr); | |
2381 | edbg("SEP Driver:g_message_shared_area_addr is %lu\n", sep_dev->message_shared_area_addr); | |
cd1bb431 | 2382 | |
d19cf32f AC |
2383 | /* set the output parameters if needed */ |
2384 | if (address_ptr) | |
2385 | *address_ptr = sep_shared_area_virt_to_phys(time_addr); | |
cd1bb431 | 2386 | |
d19cf32f AC |
2387 | if (time_in_sec_ptr) |
2388 | *time_in_sec_ptr = time.tv_sec; | |
cd1bb431 | 2389 | |
d19cf32f | 2390 | dbg("SEP Driver:<-------- sep_set_time end\n"); |
cd1bb431 | 2391 | |
d19cf32f | 2392 | return 0; |
cd1bb431 MA |
2393 | } |
2394 | ||
794f1d78 AC |
2395 | static void sep_wait_busy(struct sep_device *dev) |
2396 | { | |
2397 | u32 reg; | |
2398 | ||
2399 | do { | |
2400 | reg = sep_read_reg(sep_dev, HW_HOST_SEP_BUSY_REG_ADDR); | |
2401 | } while (reg); | |
2402 | } | |
2403 | ||
cd1bb431 MA |
2404 | /* |
2405 | PATCH for configuring the DMA to single burst instead of multi-burst | |
2406 | */ | |
2407 | static void sep_configure_dma_burst(void) | |
2408 | { | |
cd1bb431 MA |
2409 | #define HW_AHB_RD_WR_BURSTS_REG_ADDR 0x0E10UL |
2410 | ||
d19cf32f | 2411 | dbg("SEP Driver:<-------- sep_configure_dma_burst start \n"); |
cd1bb431 | 2412 | |
d19cf32f AC |
2413 | /* request access to registers from SEP */ |
2414 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); | |
cd1bb431 | 2415 | |
d19cf32f | 2416 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n"); |
cd1bb431 | 2417 | |
d19cf32f | 2418 | sep_wait_busy(sep_dev); |
cd1bb431 | 2419 | |
d19cf32f | 2420 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (while(revVal) wait loop) \n"); |
cd1bb431 | 2421 | |
d19cf32f AC |
2422 | /* set the DMA burst register to single burst */ |
2423 | sep_write_reg(sep_dev, HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL); | |
cd1bb431 | 2424 | |
d19cf32f AC |
2425 | /* release the sep busy */ |
2426 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL); | |
2427 | sep_wait_busy(sep_dev); | |
cd1bb431 | 2428 | |
d19cf32f | 2429 | dbg("SEP Driver:<-------- sep_configure_dma_burst done \n"); |
cd1bb431 MA |
2430 | |
2431 | } | |
2432 | ||
2f82614c AC |
2433 | /* major and minor device numbers */ |
2434 | static dev_t sep_devno; | |
2435 | ||
2436 | /* the files operations structure of the driver */ | |
2437 | static struct file_operations sep_file_operations = { | |
2438 | .owner = THIS_MODULE, | |
2439 | .ioctl = sep_ioctl, | |
2440 | .poll = sep_poll, | |
2441 | .open = sep_open, | |
2442 | .release = sep_release, | |
2443 | .mmap = sep_mmap, | |
2444 | }; | |
2445 | ||
2446 | ||
2447 | /* cdev struct of the driver */ | |
2448 | static struct cdev sep_cdev; | |
2449 | ||
a2171b68 AC |
2450 | /* |
2451 | this function registers the driver to the file system | |
2452 | */ | |
2453 | static int sep_register_driver_to_fs(void) | |
2454 | { | |
2f82614c | 2455 | int ret_val = alloc_chrdev_region(&sep_devno, 0, 1, "sep_sec_driver"); |
a2171b68 AC |
2456 | if (ret_val) { |
2457 | edbg("sep_driver:major number allocation failed, retval is %d\n", ret_val); | |
2458 | goto end_function; | |
2459 | } | |
2460 | ||
a2171b68 | 2461 | /* init cdev */ |
2f82614c AC |
2462 | cdev_init(&sep_cdev, &sep_file_operations); |
2463 | sep_cdev.owner = THIS_MODULE; | |
a2171b68 AC |
2464 | |
2465 | /* register the driver with the kernel */ | |
2f82614c | 2466 | ret_val = cdev_add(&sep_cdev, sep_devno, 1); |
a2171b68 AC |
2467 | |
2468 | if (ret_val) { | |
2469 | edbg("sep_driver:cdev_add failed, retval is %d\n", ret_val); | |
2470 | goto end_function_unregister_devnum; | |
2471 | } | |
2472 | ||
2473 | goto end_function; | |
2474 | ||
2475 | end_function_unregister_devnum: | |
2476 | ||
2477 | /* unregister dev numbers */ | |
2f82614c | 2478 | unregister_chrdev_region(sep_devno, 1); |
a2171b68 AC |
2479 | |
2480 | end_function: | |
2481 | return ret_val; | |
2482 | } | |
2483 | ||
2484 | /* | |
2485 | this function unregisters driver from fs | |
2486 | */ | |
2487 | static void sep_unregister_driver_from_fs(void) | |
2488 | { | |
2f82614c | 2489 | cdev_del(&sep_cdev); |
a2171b68 | 2490 | /* unregister dev numbers */ |
2f82614c | 2491 | unregister_chrdev_region(sep_devno, 1); |
a2171b68 AC |
2492 | } |
2493 | ||
2494 | ||
2495 | /*-------------------------------------------------------------- | |
2496 | init function | |
2497 | ----------------------------------------------------------------*/ | |
2498 | static int __init sep_init(void) | |
2499 | { | |
2500 | int ret_val = 0; | |
2501 | int counter; | |
2502 | int size; /* size of memory for allocation */ | |
2503 | ||
2504 | dbg("SEP Driver:-------->Init start\n"); | |
2505 | edbg("sep->shared_area_addr = %lx\n", (unsigned long) &sep_dev->shared_area_addr); | |
2506 | ||
2507 | /* transaction counter that coordinates the transactions between SEP | |
2508 | and HOST */ | |
2509 | sep_dev->host_to_sep_send_counter = 0; | |
2510 | ||
2511 | /* counter for the messages from sep */ | |
2512 | sep_dev->sep_to_host_reply_counter = 0; | |
2513 | ||
2514 | /* counter for the number of bytes allocated in the pool | |
2515 | for the current transaction */ | |
2516 | sep_dev->data_pool_bytes_allocated = 0; | |
2517 | ||
2518 | /* set the starting mode to blocking */ | |
2519 | sep_dev->block_mode_flag = 1; | |
2520 | ||
2521 | ret_val = sep_register_driver_to_device(); | |
2522 | if (ret_val) { | |
2523 | edbg("sep_driver:sep_driver_to_device failed, ret_val is %d\n", ret_val); | |
2524 | goto end_function_unregister_from_fs; | |
2525 | } | |
2526 | /* calculate the total size for allocation */ | |
2527 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2528 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; | |
2529 | ||
2530 | /* allocate the shared area */ | |
2531 | if (sep_map_and_alloc_shared_area(size, &sep_dev->shared_area_addr, &sep_dev->phys_shared_area_addr)) { | |
2532 | ret_val = -ENOMEM; | |
2533 | /* allocation failed */ | |
2534 | goto end_function_unmap_io_memory; | |
2535 | } | |
2536 | /* now set the memory regions */ | |
2537 | sep_dev->message_shared_area_addr = sep_dev->shared_area_addr; | |
2538 | ||
2539 | edbg("SEP Driver: g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr); | |
2540 | ||
2541 | #if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1) | |
2542 | /* send the new SHARED MESSAGE AREA to the SEP */ | |
2543 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep_dev->phys_shared_area_addr); | |
2544 | ||
2545 | /* poll for SEP response */ | |
2546 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR); | |
2547 | while (retVal != 0xffffffff && retVal != sep_dev->phys_shared_area_addr) | |
2548 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR); | |
2549 | ||
2550 | /* check the return value (register) */ | |
2551 | if (retVal != sep_dev->phys_shared_area_addr) { | |
2552 | ret_val = -ENOMEM; | |
2553 | goto end_function_deallocate_message_area; | |
2554 | } | |
2555 | #endif | |
2556 | /* init the flow contextes */ | |
2557 | for (counter = 0; counter < SEP_DRIVER_NUM_FLOWS; counter++) | |
2558 | sep_dev->flows_data_array[counter].flow_id = SEP_FREE_FLOW_ID; | |
2559 | ||
2560 | sep_dev->flow_wq_ptr = create_singlethread_workqueue("sepflowwq"); | |
2561 | if (sep_dev->flow_wq_ptr == 0) { | |
2562 | ret_val = -ENOMEM; | |
2563 | edbg("sep_driver:flow queue creation failed\n"); | |
2564 | goto end_function_deallocate_sep_shared_area; | |
2565 | } | |
2566 | edbg("SEP Driver: create flow workqueue \n"); | |
2567 | ||
2568 | /* register driver to fs */ | |
2569 | ret_val = sep_register_driver_to_fs(); | |
2570 | if (ret_val) | |
2571 | goto end_function_deallocate_sep_shared_area; | |
2572 | /* load the rom code */ | |
2573 | sep_load_rom_code(); | |
2574 | goto end_function; | |
2575 | end_function_unregister_from_fs: | |
2576 | /* unregister from fs */ | |
2577 | sep_unregister_driver_from_fs(); | |
2578 | end_function_deallocate_sep_shared_area: | |
2579 | /* de-allocate shared area */ | |
2580 | sep_unmap_and_free_shared_area(size, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr); | |
2581 | end_function_unmap_io_memory: | |
2582 | iounmap((void *) sep_dev->reg_base_address); | |
2583 | /* release io memory region */ | |
2584 | release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); | |
2585 | end_function: | |
2586 | dbg("SEP Driver:<-------- Init end\n"); | |
2587 | return ret_val; | |
2588 | } | |
2589 | ||
2590 | ||
2591 | /*------------------------------------------------------------- | |
2592 | exit function | |
2593 | --------------------------------------------------------------*/ | |
2594 | static void __exit sep_exit(void) | |
2595 | { | |
2596 | int size; | |
2597 | ||
2598 | dbg("SEP Driver:--------> Exit start\n"); | |
2599 | ||
2600 | /* unregister from fs */ | |
2601 | sep_unregister_driver_from_fs(); | |
2602 | /* calculate the total size for de-allocation */ | |
2603 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2604 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; | |
2605 | /* free shared area */ | |
2606 | sep_unmap_and_free_shared_area(size, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr); | |
2607 | edbg("SEP Driver: free pages SEP SHARED AREA \n"); | |
2608 | iounmap((void *) sep_dev->reg_base_address); | |
2609 | edbg("SEP Driver: iounmap \n"); | |
2610 | /* release io memory region */ | |
2611 | release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); | |
2612 | edbg("SEP Driver: release_mem_region \n"); | |
2613 | dbg("SEP Driver:<-------- Exit end\n"); | |
2614 | } | |
2615 | ||
2616 | ||
cd1bb431 MA |
2617 | module_init(sep_init); |
2618 | module_exit(sep_exit); | |
2619 | ||
2620 | MODULE_LICENSE("GPL"); |