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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" | |
51 | ||
52 | /*---------------------------------------- | |
53 | DEFINES | |
54 | -----------------------------------------*/ | |
55 | ||
56 | ||
57 | #define INT_MODULE_PARM(n, v) int n = v; module_param(n, int, 0) | |
58 | ||
59 | /*-------------------------------------- | |
60 | TYPEDEFS | |
61 | -----------------------------------------*/ | |
62 | ||
63 | ||
64 | ||
65 | /*-------------------------------------------- | |
66 | GLOBAL variables | |
67 | --------------------------------------------*/ | |
68 | ||
69 | /* debug messages level */ | |
70 | INT_MODULE_PARM(sepDebug, 0x0); | |
71 | MODULE_PARM_DESC(sepDebug, "Flag to enable SEP debug messages"); | |
72 | ||
73 | /* address of the shared memory allocated during init for SEP driver */ | |
74 | static unsigned long g_sep_shared_area_addr; | |
75 | ||
76 | /* the physical address of the shared area */ | |
77 | static unsigned long g_sep_phys_shared_area_addr; | |
78 | ||
79 | /* Message Shared Area start address - will be allocated during init */ | |
80 | static unsigned long g_message_shared_area_addr; | |
81 | ||
82 | /* major and minor device numbers */ | |
83 | static dev_t g_sep_device_number; | |
84 | ||
85 | /* the files operations structure of the driver */ | |
86 | static struct file_operations g_sep_fops; | |
87 | ||
88 | /* cdev struct of the driver */ | |
89 | static struct cdev g_sep_cdev; | |
90 | ||
91 | /* | |
92 | mutex for the access to the internals of the sep driver | |
93 | */ | |
94 | static DEFINE_MUTEX(sep_mutex); | |
95 | ||
96 | ||
97 | /* wait queue head (event) of the driver */ | |
98 | DECLARE_WAIT_QUEUE_HEAD(g_sep_event); | |
99 | ||
100 | ||
101 | /* start address of the access to the SEP registers from driver */ | |
102 | unsigned long g_sep_reg_base_address; | |
103 | ||
104 | /* transaction counter that coordinates the transactions between SEP and HOST */ | |
105 | static unsigned long sep_host_to_sep_send_counter; | |
106 | ||
107 | /* counter for the messages from sep */ | |
108 | static unsigned long sep_sep_to_host_reply_counter; | |
109 | ||
110 | /* counter for the number of bytes allocated in the pool for the current | |
111 | transaction */ | |
112 | static unsigned long sep_data_pool_bytes_allocated; | |
113 | ||
114 | /* array of pointers to the pages that represent input data for the synchronic | |
115 | DMA action */ | |
116 | struct page **sep_in_page_array; | |
117 | ||
118 | /* array of pointers to the pages that represent out data for the synchronic | |
119 | DMA action */ | |
120 | struct page **sep_out_page_array; | |
121 | ||
122 | /* number of pages in the sep_in_page_array */ | |
123 | unsigned long sep_in_num_pages; | |
124 | ||
125 | /* number of pages in the sep_out_page_array */ | |
126 | unsigned long sep_out_num_pages; | |
127 | ||
128 | /* global data for every flow */ | |
129 | static struct sep_flow_context_t g_sep_flows_data_array[SEP_DRIVER_NUM_FLOWS]; | |
130 | ||
131 | /* flag for API mode - 1 -is blocking, 0 is non-blocking */ | |
132 | static unsigned long g_sep_block_mode_flag; | |
133 | ||
134 | /* pointer to the workqueue that handles the flow done interrupts */ | |
135 | static struct workqueue_struct *g_sep_flow_wq_ptr; | |
136 | ||
137 | /*------------------------------------------------ | |
138 | PROTOTYPES | |
139 | ---------------------------------------------------*/ | |
140 | ||
141 | /* | |
142 | interrupt handler function | |
143 | */ | |
144 | irqreturn_t sep_inthandler(int irq, void *dev_id); | |
145 | ||
146 | /* | |
147 | this function registers the driver to the file system | |
148 | */ | |
149 | static int sep_register_driver_to_fs(void); | |
150 | ||
151 | /* | |
152 | this function unregisters driver from fs | |
153 | */ | |
154 | static void sep_unregister_driver_from_fs(void); | |
155 | ||
156 | /* | |
157 | this function calculates the size of data that can be inserted into the lli | |
158 | table from this array the condition is that either the table is full | |
159 | (all etnries are entered), or there are no more entries in the lli array | |
160 | */ | |
161 | static unsigned long sep_calculate_lli_table_max_size( | |
162 | struct sep_lli_entry_t *lli_in_array_ptr, | |
163 | unsigned long num_array_entries); | |
164 | /* | |
165 | this functions builds ont lli table from the lli_array according to the | |
166 | given size of data | |
167 | */ | |
168 | static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, | |
169 | struct sep_lli_entry_t *lli_table_ptr, | |
170 | unsigned long *num_processed_entries_ptr, | |
171 | unsigned long *num_table_entries_ptr, | |
172 | unsigned long table_data_size); | |
173 | ||
174 | /* | |
175 | this function goes over the list of the print created tables and prints | |
176 | all the data | |
177 | */ | |
178 | static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, | |
179 | unsigned long num_table_entries, | |
180 | unsigned long table_data_size); | |
181 | ||
182 | ||
183 | ||
184 | /* | |
185 | This function raises interrupt to SEPm that signals that is has a new | |
186 | command from HOST | |
187 | */ | |
188 | static void sep_send_command_handler(void); | |
189 | ||
190 | ||
191 | /* | |
192 | This function raises interrupt to SEP that signals that is has a | |
193 | new reply from HOST | |
194 | */ | |
195 | static void sep_send_reply_command_handler(void); | |
196 | ||
197 | /* | |
198 | This function handles the allocate data pool memory request | |
199 | This function returns calculates the physical address of the allocated memory | |
200 | and the offset of this area from the mapped address. Therefore, the FVOs in | |
201 | user space can calculate the exact virtual address of this allocated memory | |
202 | */ | |
203 | static int sep_allocate_data_pool_memory_handler(unsigned long arg); | |
204 | ||
205 | ||
206 | /* | |
207 | This function handles write into allocated data pool command | |
208 | */ | |
209 | static int sep_write_into_data_pool_handler(unsigned long arg); | |
210 | ||
211 | /* | |
212 | this function handles the read from data pool command | |
213 | */ | |
214 | static int sep_read_from_data_pool_handler(unsigned long arg); | |
215 | ||
216 | /* | |
217 | this function handles tha request for creation of the DMA table | |
218 | for the synchronic symmetric operations (AES,DES) | |
219 | */ | |
220 | static int sep_create_sync_dma_tables_handler(unsigned long arg); | |
221 | ||
222 | /* | |
223 | this function handles the request to create the DMA tables for flow | |
224 | */ | |
225 | static int sep_create_flow_dma_tables_handler(unsigned long arg); | |
226 | ||
227 | /* | |
228 | This API handles the end transaction request | |
229 | */ | |
230 | static int sep_end_transaction_handler(unsigned long arg); | |
231 | ||
232 | ||
233 | /* | |
234 | this function handles add tables to flow | |
235 | */ | |
236 | static int sep_add_flow_tables_handler(unsigned long arg); | |
237 | ||
238 | /* | |
239 | this function add the flow add message to the specific flow | |
240 | */ | |
241 | static int sep_add_flow_tables_message_handler(unsigned long arg); | |
242 | ||
243 | /* | |
244 | this function handles the request for SEP start | |
245 | */ | |
246 | static int sep_start_handler(void); | |
247 | ||
248 | /* | |
249 | this function handles the request for SEP initialization | |
250 | */ | |
251 | static int sep_init_handler(unsigned long arg); | |
252 | ||
253 | /* | |
254 | this function handles the request cache and resident reallocation | |
255 | */ | |
256 | static int sep_realloc_cache_resident_handler(unsigned long arg); | |
257 | ||
258 | ||
259 | /* | |
260 | This api handles the setting of API mode to blocking or non-blocking | |
261 | */ | |
262 | static int sep_set_api_mode_handler(unsigned long arg); | |
263 | ||
264 | /* handler for flow done interrupt */ | |
265 | static void sep_flow_done_handler(struct work_struct *work); | |
266 | ||
267 | /* | |
268 | This function locks all the physical pages of the kernel virtual buffer | |
269 | and construct a basic lli array, where each entry holds the physical | |
270 | page address and the size that application data holds in this physical pages | |
271 | */ | |
272 | static int sep_lock_kernel_pages(unsigned long kernel_virt_addr, | |
273 | unsigned long data_size, | |
274 | unsigned long *num_pages_ptr, | |
275 | struct sep_lli_entry_t **lli_array_ptr, | |
276 | struct page ***page_array_ptr); | |
277 | ||
278 | /* | |
279 | This function creates one DMA table for flow and returns its data, | |
280 | and pointer to its info entry | |
281 | */ | |
282 | static int sep_prepare_one_flow_dma_table(unsigned long virt_buff_addr, | |
283 | unsigned long virt_buff_size, | |
284 | struct sep_lli_entry_t *table_data, | |
285 | struct sep_lli_entry_t **info_entry_ptr, | |
286 | struct sep_flow_context_t *flow_data_ptr, | |
287 | bool isKernelVirtualAddress); | |
288 | ||
289 | /* | |
290 | This function creates a list of tables for flow and returns the data for the | |
291 | first and last tables of the list | |
292 | */ | |
293 | static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, | |
294 | unsigned long first_buff_addr, | |
295 | struct sep_flow_context_t *flow_data_ptr, | |
296 | struct sep_lli_entry_t *first_table_data_ptr, | |
297 | struct sep_lli_entry_t *last_table_data_ptr, | |
298 | bool isKernelVirtualAddress); | |
299 | ||
300 | /* | |
301 | this function find a space for the new flow dma table | |
302 | */ | |
303 | static int sep_find_free_flow_dma_table_space( | |
304 | unsigned long **table_address_ptr); | |
305 | ||
306 | /* | |
307 | this function goes over all the flow tables connected to the given table and | |
308 | deallocate them | |
309 | */ | |
310 | static void sep_deallocated_flow_tables( | |
311 | struct sep_lli_entry_t *first_table_ptr); | |
312 | ||
313 | /* | |
314 | This function handler the set flow id command | |
315 | */ | |
316 | static int sep_set_flow_id_handler(unsigned long arg); | |
317 | ||
318 | /* | |
319 | This function returns pointer to the flow data structure | |
320 | that conatins the given id | |
321 | */ | |
322 | static int sep_find_flow_context(unsigned long flow_id, | |
323 | struct sep_flow_context_t **flow_data_ptr); | |
324 | ||
325 | ||
326 | /* | |
327 | this function returns the physical and virtual addresses of the static pool | |
328 | */ | |
329 | static int sep_get_static_pool_addr_handler(unsigned long arg); | |
330 | ||
331 | /* | |
332 | this address gets the offset of the physical address from the start of | |
333 | the mapped area | |
334 | */ | |
335 | static int sep_get_physical_mapped_offset_handler(unsigned long arg); | |
336 | ||
337 | ||
338 | /* | |
339 | this function handles the request for get time | |
340 | */ | |
341 | static int sep_get_time_handler(unsigned long arg); | |
342 | ||
343 | /* | |
344 | calculates time and sets it at the predefined address | |
345 | */ | |
346 | static int sep_set_time(unsigned long *address_ptr, | |
347 | unsigned long *time_in_sec_ptr); | |
348 | ||
349 | /* | |
350 | PATCH for configuring the DMA to single burst instead of multi-burst | |
351 | */ | |
352 | static void sep_configure_dma_burst(void); | |
353 | ||
354 | /* | |
355 | This function locks all the physical pages of the | |
356 | application virtual buffer and construct a basic lli | |
357 | array, where each entry holds the physical page address | |
358 | and the size that application data holds in this physical pages | |
359 | */ | |
360 | static int sep_lock_user_pages(unsigned long app_virt_addr, | |
361 | unsigned long data_size, | |
362 | unsigned long *num_pages_ptr, | |
363 | struct sep_lli_entry_t **lli_array_ptr, | |
364 | struct page ***page_array_ptr); | |
365 | ||
366 | /*--------------------------------------------- | |
367 | FUNCTIONS | |
368 | -----------------------------------------------*/ | |
369 | ||
370 | /* | |
371 | this function locks SEP by locking the semaphore | |
372 | */ | |
373 | int sep_lock() | |
374 | { | |
375 | mutex_lock(&sep_mutex); | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | /* | |
381 | this function unlocks SEP | |
382 | */ | |
383 | void sep_unlock() | |
384 | { | |
385 | /* release mutex */ | |
386 | mutex_unlock(&sep_mutex); | |
387 | } | |
388 | ||
389 | /* | |
390 | this function returns the address of the message shared area | |
391 | */ | |
392 | void sep_map_shared_area(unsigned long *mappedAddr_ptr) | |
393 | { | |
394 | *mappedAddr_ptr = g_sep_shared_area_addr; | |
395 | } | |
396 | ||
397 | /* | |
398 | this function returns the address of the message shared area | |
399 | */ | |
400 | void sep_send_msg_rdy_cmd() | |
401 | { | |
402 | sep_send_command_handler(); | |
403 | } | |
404 | ||
405 | /* this functions frees all the resources that were allocated for the building | |
406 | of the LLI DMA tables */ | |
407 | void sep_free_dma_resources() | |
408 | { | |
409 | sep_free_dma_table_data_handler(); | |
410 | } | |
411 | ||
412 | /* poll(suspend), until reply from sep */ | |
413 | void sep_driver_poll() | |
414 | { | |
415 | unsigned long retVal = 0; | |
416 | ||
417 | #ifdef SEP_DRIVER_POLLING_MODE | |
418 | ||
419 | while (sep_host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) | |
420 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
421 | HW_HOST_SEP_HOST_GPR2_REG_ADDR, | |
422 | retVal); | |
423 | ||
424 | sep_sep_to_host_reply_counter++; | |
425 | #else | |
426 | /* poll, until reply from sep */ | |
427 | wait_event(g_sep_event, | |
428 | (sep_host_to_sep_send_counter == sep_sep_to_host_reply_counter)); | |
429 | ||
430 | #endif | |
431 | } | |
432 | ||
433 | /*---------------------------------------------------------------------- | |
434 | open function of the character driver - must only lock the mutex | |
435 | must also release the memory data pool allocations | |
436 | ------------------------------------------------------------------------*/ | |
437 | static int sep_open(struct inode *inode_ptr, struct file *file_ptr) | |
438 | { | |
439 | /* return value */ | |
440 | int error; | |
441 | ||
442 | /*----------------- | |
443 | CODE | |
444 | ---------------------*/ | |
445 | ||
446 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:--------> open start\n"); | |
447 | ||
448 | error = 0; | |
449 | ||
450 | /* check the blocking mode */ | |
451 | if (g_sep_block_mode_flag) | |
452 | /* lock mutex */ | |
453 | mutex_lock(&sep_mutex); | |
454 | else | |
455 | error = mutex_trylock(&sep_mutex); | |
456 | ||
457 | /* check the error */ | |
458 | if (error) { | |
459 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
460 | "SEP Driver: down_interruptible failed\n"); | |
461 | ||
462 | goto end_function; | |
463 | } | |
464 | ||
465 | /* release data pool allocations */ | |
466 | sep_data_pool_bytes_allocated = 0; | |
467 | ||
468 | end_function: | |
469 | ||
470 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- open end\n"); | |
471 | ||
472 | return error; | |
473 | } | |
474 | ||
475 | ||
476 | ||
477 | ||
478 | /*------------------------------------------------------------ | |
479 | release function | |
480 | -------------------------------------------------------------*/ | |
481 | static int sep_release(struct inode *inode_ptr, struct file *file_ptr) | |
482 | { | |
483 | /*----------------- | |
484 | CODE | |
485 | ---------------------*/ | |
486 | ||
487 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
488 | "----------->SEP Driver: sep_release start\n"); | |
489 | ||
490 | #if 0/*!SEP_DRIVER_POLLING_MODE*/ | |
491 | /* close IMR */ | |
492 | SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_IMR_REG_ADDR, 0x7FFF); | |
493 | ||
494 | /* release IRQ line */ | |
495 | free_irq(SEP_DIRVER_IRQ_NUM, &g_sep_reg_base_address); | |
496 | ||
497 | #endif | |
498 | ||
499 | /* unlock the sep mutex */ | |
500 | mutex_unlock(&sep_mutex); | |
501 | ||
502 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
503 | "SEP Driver:<-------- sep_release end\n"); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | ||
509 | ||
510 | ||
511 | /*--------------------------------------------------------------- | |
512 | map function - this functions maps the message shared area | |
513 | -----------------------------------------------------------------*/ | |
514 | static int sep_mmap(struct file *filp, struct vm_area_struct *vma) | |
515 | { | |
516 | /* physical addr */ | |
517 | unsigned long phys_addr; | |
518 | ||
519 | /*----------------------- | |
520 | CODE | |
521 | -------------------------*/ | |
522 | ||
523 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "-------->SEP Driver: mmap start\n"); | |
524 | ||
525 | /* check that the size of the mapped range is as the size of the message | |
526 | shared area */ | |
527 | if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) { | |
528 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
529 | "SEP Driver mmap requested size is more than allowed\n"); | |
530 | printk(KERN_WARNING "SEP Driver mmap requested size is more \ | |
531 | than allowed\n"); | |
532 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", | |
533 | vma->vm_end); | |
534 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", | |
535 | vma->vm_start); | |
536 | return -EAGAIN; | |
537 | } | |
538 | ||
539 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
540 | "SEP Driver:g_message_shared_area_addr is %08lx\n", | |
541 | g_message_shared_area_addr); | |
542 | ||
543 | /* get physical address */ | |
544 | phys_addr = g_sep_phys_shared_area_addr; | |
545 | ||
546 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: phys_addr is %08lx\n", | |
547 | phys_addr); | |
548 | ||
549 | if (remap_pfn_range(vma, | |
550 | vma->vm_start, | |
551 | phys_addr >> PAGE_SHIFT, | |
552 | vma->vm_end - vma->vm_start, | |
553 | vma->vm_page_prot)) { | |
554 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
555 | "SEP Driver remap_page_range failed\n"); | |
556 | printk(KERN_WARNING "SEP Driver remap_page_range failed\n"); | |
557 | return -EAGAIN; | |
558 | } | |
559 | ||
560 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- mmap end\n"); | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
565 | ||
566 | /*----------------------------------------------- | |
567 | poll function | |
568 | *----------------------------------------------*/ | |
569 | static unsigned int sep_poll(struct file *filp, poll_table *wait) | |
570 | { | |
571 | unsigned long count; | |
572 | ||
573 | unsigned int mask = 0; | |
574 | ||
575 | /* flow id */ | |
576 | unsigned long retVal = 0; | |
577 | ||
578 | /*---------------------------------------------- | |
579 | CODE | |
580 | -------------------------------------------------*/ | |
581 | ||
582 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "---------->SEP Driver poll: start\n"); | |
583 | ||
584 | ||
585 | #if SEP_DRIVER_POLLING_MODE | |
586 | ||
587 | while (sep_host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) { | |
588 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
589 | HW_HOST_SEP_HOST_GPR2_REG_ADDR, | |
590 | retVal); | |
591 | ||
592 | for (count = 0; count < 10 * 4; count += 4) | |
593 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
594 | "Poll Debug Word %lu of the message is %lu\n", | |
595 | count, | |
596 | *((unsigned long *)(g_sep_shared_area_addr + | |
597 | SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + count))); | |
598 | } | |
599 | ||
600 | sep_sep_to_host_reply_counter++; | |
601 | #else | |
602 | /* add the event to the polling wait table */ | |
603 | poll_wait(filp, &g_sep_event, wait); | |
604 | ||
605 | #endif | |
606 | ||
607 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
608 | "sep_host_to_sep_send_counter is %lu\n", | |
609 | sep_host_to_sep_send_counter); | |
610 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
611 | "sep_sep_to_host_reply_counter is %lu\n", | |
612 | sep_sep_to_host_reply_counter); | |
613 | ||
614 | /* check if the data is ready */ | |
615 | if (sep_host_to_sep_send_counter == sep_sep_to_host_reply_counter) { | |
616 | for (count = 0; count < 12 * 4; count += 4) | |
617 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
618 | "Sep Mesg Word %lu of the message is %lu\n", | |
619 | count, *((unsigned long *)(g_sep_shared_area_addr + count))); | |
620 | ||
621 | for (count = 0; count < 10 * 4; count += 4) | |
622 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
623 | "Debug Data Word %lu of the message is %lu\n", | |
624 | count, | |
625 | *((unsigned long *)(g_sep_shared_area_addr + 0x1800 + count))); | |
626 | ||
627 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
628 | HW_HOST_SEP_HOST_GPR2_REG_ADDR, | |
629 | retVal); | |
630 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "retVal is %lu\n", retVal); | |
631 | /* check if the this is sep reply or request */ | |
632 | if (retVal >> 31) { | |
633 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
634 | "SEP Driver: sep request in\n"); | |
635 | /* request */ | |
636 | mask |= POLLOUT | POLLWRNORM; | |
637 | } else { | |
638 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: sep reply in\n"); | |
639 | mask |= POLLIN | POLLRDNORM; | |
640 | } | |
641 | } | |
642 | ||
643 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- poll exit\n"); | |
644 | return mask; | |
645 | } | |
646 | ||
647 | ||
648 | static int sep_ioctl(struct inode *inode, | |
649 | struct file *filp, | |
650 | unsigned int cmd, | |
651 | unsigned long arg) | |
652 | { | |
653 | ||
654 | /* error */ | |
655 | int error; | |
656 | ||
657 | /*------------------------ | |
658 | CODE | |
659 | ------------------------*/ | |
660 | error = 0; | |
661 | ||
662 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
663 | "------------>SEP Driver: ioctl start\n"); | |
664 | ||
665 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: cmd is %x\n", cmd); | |
666 | ||
667 | /* check that the command is for sep device */ | |
668 | if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) | |
669 | error = -ENOTTY; | |
670 | ||
671 | switch (cmd) { | |
672 | case SEP_IOCSENDSEPCOMMAND: | |
673 | ||
674 | /* send command to SEP */ | |
675 | sep_send_command_handler(); | |
676 | ||
677 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
678 | "SEP Driver: after sep_send_command_handler\n"); | |
679 | ||
680 | break; | |
681 | ||
682 | case SEP_IOCSENDSEPRPLYCOMMAND: | |
683 | ||
684 | /* send reply command to SEP */ | |
685 | sep_send_reply_command_handler(); | |
686 | ||
687 | break; | |
688 | ||
689 | case SEP_IOCALLOCDATAPOLL: | |
690 | ||
691 | /* allocate data pool */ | |
692 | error = sep_allocate_data_pool_memory_handler(arg); | |
693 | ||
694 | break; | |
695 | ||
696 | case SEP_IOCWRITEDATAPOLL: | |
697 | ||
698 | /* write data into memory pool */ | |
699 | error = sep_write_into_data_pool_handler(arg); | |
700 | ||
701 | break; | |
702 | ||
703 | case SEP_IOCREADDATAPOLL: | |
704 | ||
705 | /* read data from data pool into application memory */ | |
706 | error = sep_read_from_data_pool_handler(arg); | |
707 | ||
708 | break; | |
709 | ||
710 | case SEP_IOCCREATESYMDMATABLE: | |
711 | ||
712 | /* create dma table for synhronic operation */ | |
713 | error = sep_create_sync_dma_tables_handler(arg); | |
714 | ||
715 | break; | |
716 | ||
717 | case SEP_IOCCREATEFLOWDMATABLE: | |
718 | ||
719 | /* create flow dma tables */ | |
720 | error = sep_create_flow_dma_tables_handler(arg); | |
721 | ||
722 | break; | |
723 | ||
724 | case SEP_IOCFREEDMATABLEDATA: | |
725 | ||
726 | /* free the pages */ | |
727 | error = sep_free_dma_table_data_handler(); | |
728 | ||
729 | break; | |
730 | ||
731 | case SEP_IOCSETFLOWID: | |
732 | ||
733 | /* set flow id */ | |
734 | error = sep_set_flow_id_handler(arg); | |
735 | ||
736 | break; | |
737 | ||
738 | case SEP_IOCADDFLOWTABLE: | |
739 | ||
740 | /* add tables to the dynamic flow */ | |
741 | error = sep_add_flow_tables_handler(arg); | |
742 | ||
743 | break; | |
744 | ||
745 | case SEP_IOCADDFLOWMESSAGE: | |
746 | ||
747 | /* add message of add tables to flow */ | |
748 | error = sep_add_flow_tables_message_handler(arg); | |
749 | ||
750 | break; | |
751 | ||
752 | case SEP_IOCSEPSTART: | |
753 | ||
754 | /* start command to sep */ | |
755 | error = sep_start_handler(); | |
756 | break; | |
757 | ||
758 | case SEP_IOCSEPINIT: | |
759 | ||
760 | /* init command to sep */ | |
761 | error = sep_init_handler(arg); | |
762 | break; | |
763 | ||
764 | case SEP_IOCSETAPIMODE: | |
765 | ||
766 | /* set non- blocking mode */ | |
767 | error = sep_set_api_mode_handler(arg); | |
768 | ||
769 | break; | |
770 | ||
771 | case SEP_IOCGETSTATICPOOLADDR: | |
772 | ||
773 | /* get the physical and virtual addresses of the static pool */ | |
774 | error = sep_get_static_pool_addr_handler(arg); | |
775 | ||
776 | break; | |
777 | ||
778 | case SEP_IOCENDTRANSACTION: | |
779 | ||
780 | error = sep_end_transaction_handler(arg); | |
781 | ||
782 | break; | |
783 | ||
784 | case SEP_IOCREALLOCCACHERES: | |
785 | ||
786 | error = sep_realloc_cache_resident_handler(arg); | |
787 | ||
788 | break; | |
789 | ||
790 | case SEP_IOCGETMAPPEDADDROFFSET: | |
791 | ||
792 | error = sep_get_physical_mapped_offset_handler(arg); | |
793 | ||
794 | break; | |
795 | case SEP_IOCGETIME: | |
796 | ||
797 | error = sep_get_time_handler(arg); | |
798 | ||
799 | break; | |
800 | ||
801 | default: | |
802 | error = -ENOTTY; | |
803 | break; | |
804 | } | |
805 | ||
806 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
807 | "SEP Driver:<-------- ioctl end\n"); | |
808 | ||
809 | return error; | |
810 | } | |
811 | ||
812 | ||
813 | /* | |
814 | this function registers the driver to the file system | |
815 | */ | |
816 | static int sep_register_driver_to_fs(void) | |
817 | { | |
818 | /* return value */ | |
819 | int ret_val; | |
820 | ||
821 | /*--------------------- | |
822 | CODE | |
823 | -----------------------*/ | |
824 | ||
825 | ret_val = alloc_chrdev_region(&g_sep_device_number, 0, 1, "sep_sec_driver"); | |
826 | if (ret_val) { | |
827 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
828 | "sep_driver:major number allocation failed, retval is %d\n", ret_val); | |
829 | goto end_function; | |
830 | } | |
831 | ||
832 | /* set the files operations structure */ | |
833 | g_sep_fops.owner = THIS_MODULE; | |
834 | g_sep_fops.ioctl = sep_ioctl; | |
835 | g_sep_fops.poll = sep_poll; | |
836 | g_sep_fops.open = sep_open; | |
837 | g_sep_fops.release = sep_release; | |
838 | g_sep_fops.mmap = sep_mmap; | |
839 | ||
840 | /* init cdev */ | |
841 | cdev_init(&g_sep_cdev, &g_sep_fops); | |
842 | g_sep_cdev.owner = THIS_MODULE; | |
843 | ||
844 | /* register the driver with the kernel */ | |
845 | ret_val = cdev_add(&g_sep_cdev, g_sep_device_number, 1); | |
846 | ||
847 | if (ret_val) { | |
848 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
849 | "sep_driver:cdev_add failed, retval is %d\n", | |
850 | ret_val); | |
851 | goto end_function_unregister_devnum; | |
852 | } | |
853 | ||
854 | goto end_function; | |
855 | ||
856 | end_function_unregister_devnum: | |
857 | ||
858 | /* unregister dev numbers */ | |
859 | unregister_chrdev_region(g_sep_device_number, 1); | |
860 | ||
861 | end_function: | |
862 | ||
863 | return ret_val; | |
864 | } | |
865 | ||
866 | /* | |
867 | this function unregisters driver from fs | |
868 | */ | |
869 | static void sep_unregister_driver_from_fs(void) | |
870 | { | |
871 | /*------------------- | |
872 | CODE | |
873 | ---------------------*/ | |
874 | ||
875 | cdev_del(&g_sep_cdev); | |
876 | ||
877 | /* unregister dev numbers */ | |
878 | unregister_chrdev_region(g_sep_device_number, 1); | |
879 | } | |
880 | ||
881 | /*-------------------------------------------------------------- | |
882 | init function | |
883 | ----------------------------------------------------------------*/ | |
884 | static int __init sep_init(void) | |
885 | { | |
886 | /* return value */ | |
887 | int ret_val; | |
888 | ||
889 | /* counter */ | |
890 | int counter; | |
891 | ||
892 | /* size to of memory for allocation */ | |
893 | int size; | |
894 | ||
895 | /*------------------------ | |
896 | CODE | |
897 | ------------------------*/ | |
898 | ||
899 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
900 | "SEP Driver:-------->Init start\n"); | |
901 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, | |
902 | "g_sep_shared_area_addr = %lx\n", | |
903 | (unsigned long)&g_sep_shared_area_addr); | |
904 | ||
905 | ret_val = 0; | |
906 | ||
907 | /* transaction counter that coordinates the transactions between SEP | |
908 | and HOST */ | |
909 | sep_host_to_sep_send_counter = 0; | |
910 | ||
911 | /* counter for the messages from sep */ | |
912 | sep_sep_to_host_reply_counter = 0; | |
913 | ||
914 | /* counter for the number of bytes allocated in the pool | |
915 | for the current transaction */ | |
916 | sep_data_pool_bytes_allocated = 0; | |
917 | ||
918 | /* set the starting mode to blocking */ | |
919 | g_sep_block_mode_flag = 1; | |
920 | ||
921 | ||
922 | ret_val = sep_register_driver_to_device(); | |
923 | if (ret_val) { | |
924 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
925 | "sep_driver:sep_driver_to_device failed, ret_val is %d\n", | |
926 | ret_val); | |
927 | goto end_function_unregister_from_fs; | |
928 | } | |
929 | ||
930 | /* calculate the total size for allocation */ | |
931 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
932 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + | |
933 | SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + | |
934 | SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + | |
935 | SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + | |
936 | SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; | |
937 | ||
938 | ||
939 | ||
940 | /* allocate the shared area */ | |
941 | if (sep_map_and_alloc_shared_area(size, | |
942 | &g_sep_shared_area_addr, | |
943 | &g_sep_phys_shared_area_addr)) { | |
944 | ret_val = -ENOMEM; | |
945 | /* allocation failed */ | |
946 | goto end_function_unmap_io_memory; | |
947 | } | |
948 | ||
949 | /* now set the memory regions */ | |
950 | g_message_shared_area_addr = g_sep_shared_area_addr; | |
951 | ||
952 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
953 | "SEP Driver: g_message_shared_area_addr is %08lx\n", | |
954 | g_message_shared_area_addr); | |
955 | ||
956 | #if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1) | |
957 | ||
958 | /* send the new SHARED MESSAGE AREA to the SEP */ | |
959 | SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_HOST_SEP_GPR1_REG_ADDR, | |
960 | g_sep_phys_shared_area_addr); | |
961 | ||
962 | /* poll for SEP response */ | |
963 | SEP_READ_REGISTER(g_sep_reg_base_address + HW_HOST_SEP_HOST_GPR1_REG_ADDR, | |
964 | retVal); | |
965 | while (retVal != 0xffffffff && retVal != g_sep_phys_shared_area_addr) | |
966 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
967 | HW_HOST_SEP_HOST_GPR1_REG_ADDR, | |
968 | retVal); | |
969 | ||
970 | /* check the return value (register) */ | |
971 | if (retVal != g_sep_phys_shared_area_addr) { | |
972 | ret_val = -ENOMEM; | |
973 | goto end_function_deallocate_message_area; | |
974 | } | |
975 | ||
976 | #endif | |
977 | ||
978 | /* init the flow contextes */ | |
979 | for (counter = 0; counter < SEP_DRIVER_NUM_FLOWS; counter++) | |
980 | g_sep_flows_data_array[counter].flow_id = SEP_FREE_FLOW_ID; | |
981 | ||
982 | g_sep_flow_wq_ptr = create_singlethread_workqueue("sepflowwq"); | |
983 | if (g_sep_flow_wq_ptr == 0) { | |
984 | ret_val = -ENOMEM; | |
985 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
986 | "sep_driver:flow queue creation failed\n"); | |
987 | goto end_function_deallocate_sep_shared_area; | |
988 | } | |
989 | ||
990 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
991 | "SEP Driver: create flow workqueue \n"); | |
992 | ||
993 | /* register driver to fs */ | |
994 | ret_val = sep_register_driver_to_fs(); | |
995 | if (ret_val) | |
996 | goto end_function_deallocate_sep_shared_area; | |
997 | ||
998 | /* load the rom code */ | |
999 | sep_load_rom_code(); | |
1000 | ||
1001 | goto end_function; | |
1002 | ||
1003 | end_function_unregister_from_fs: | |
1004 | ||
1005 | /* unregister from fs */ | |
1006 | sep_unregister_driver_from_fs(); | |
1007 | ||
1008 | end_function_deallocate_sep_shared_area: | |
1009 | ||
1010 | /* de-allocate shared area */ | |
1011 | sep_unmap_and_free_shared_area(size, | |
1012 | g_sep_shared_area_addr, | |
1013 | g_sep_phys_shared_area_addr); | |
1014 | ||
1015 | end_function_unmap_io_memory: | |
1016 | ||
1017 | iounmap((void *)g_sep_reg_base_address); | |
1018 | ||
1019 | /* release io memory region */ | |
1020 | release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); | |
1021 | ||
1022 | end_function: | |
1023 | ||
1024 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- Init end\n"); | |
1025 | ||
1026 | return ret_val; | |
1027 | } | |
1028 | ||
1029 | ||
1030 | ||
1031 | ||
1032 | /*------------------------------------------------------------- | |
1033 | exit function | |
1034 | --------------------------------------------------------------*/ | |
1035 | static void __exit sep_exit(void) | |
1036 | { | |
1037 | /* size */ | |
1038 | int size; | |
1039 | ||
1040 | /*----------------------------- | |
1041 | CODE | |
1042 | --------------------------------*/ | |
1043 | ||
1044 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:--------> Exit start\n"); | |
1045 | ||
1046 | /* unregister from fs */ | |
1047 | sep_unregister_driver_from_fs(); | |
1048 | ||
1049 | /* calculate the total size for de-allocation */ | |
1050 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
1051 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + | |
1052 | SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + | |
1053 | SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + | |
1054 | SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + | |
1055 | SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; | |
1056 | ||
1057 | ||
1058 | /* free shared area */ | |
1059 | sep_unmap_and_free_shared_area(size, | |
1060 | g_sep_shared_area_addr, | |
1061 | g_sep_phys_shared_area_addr); | |
1062 | ||
1063 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1064 | "SEP Driver: free pages SEP SHARED AREA \n"); | |
1065 | ||
1066 | iounmap((void *)g_sep_reg_base_address); | |
1067 | ||
1068 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: iounmap \n"); | |
1069 | ||
1070 | /* release io memory region */ | |
1071 | release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); | |
1072 | ||
1073 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver: release_mem_region \n"); | |
1074 | ||
1075 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, "SEP Driver:<-------- Exit end\n"); | |
1076 | } | |
1077 | ||
1078 | ||
1079 | /* | |
1080 | interrupt handler function | |
1081 | */ | |
1082 | irqreturn_t sep_inthandler(int irq, void *dev_id) | |
1083 | { | |
1084 | /* int error */ | |
1085 | irqreturn_t int_error; | |
1086 | ||
1087 | /* error */ | |
1088 | unsigned long error; | |
1089 | ||
1090 | /* reg value */ | |
1091 | unsigned long reg_val; | |
1092 | ||
1093 | /* flow id */ | |
1094 | unsigned long flow_id; | |
1095 | ||
1096 | /* flow context */ | |
1097 | struct sep_flow_context_t *flow_context_ptr; | |
1098 | ||
1099 | /*----------------------------- | |
1100 | CODE | |
1101 | -----------------------------*/ | |
1102 | ||
1103 | int_error = IRQ_HANDLED; | |
1104 | ||
1105 | /* read the IRR register to check if this is SEP interrupt */ | |
1106 | SEP_READ_REGISTER(g_sep_reg_base_address + HW_HOST_IRR_REG_ADDR, reg_val); | |
1107 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Interrupt - reg is %08lx\n", | |
1108 | reg_val); | |
1109 | ||
1110 | /* check if this is the flow interrupt */ | |
1111 | if (0/*reg_val & (0x1 << 11)*/) { | |
1112 | /* read GPRO to find out the which flow is done */ | |
1113 | SEP_READ_REGISTER(g_sep_reg_base_address + HW_HOST_IRR_REG_ADDR, | |
1114 | flow_id); | |
1115 | ||
1116 | /* find the contex of the flow */ | |
1117 | error = sep_find_flow_context(flow_id >> 28, &flow_context_ptr); | |
1118 | if (error) | |
1119 | goto end_function_with_error; | |
1120 | ||
1121 | INIT_WORK(&flow_context_ptr->flow_wq, sep_flow_done_handler); | |
1122 | ||
1123 | /* queue the work */ | |
1124 | queue_work(g_sep_flow_wq_ptr, &flow_context_ptr->flow_wq); | |
1125 | ||
1126 | } else { | |
1127 | /* check if this is reply interrupt from SEP */ | |
1128 | if (reg_val & (0x1 << 13)) { | |
1129 | /* update the counter of reply messages */ | |
1130 | sep_sep_to_host_reply_counter++; | |
1131 | ||
1132 | /* wake up the waiting process */ | |
1133 | wake_up(&g_sep_event); | |
1134 | } else { | |
1135 | int_error = IRQ_NONE; | |
1136 | goto end_function; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | end_function_with_error: | |
1141 | ||
1142 | /* clear the interrupt */ | |
1143 | SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_ICR_REG_ADDR, reg_val); | |
1144 | ||
1145 | end_function: | |
1146 | ||
1147 | return int_error; | |
1148 | } | |
1149 | ||
1150 | ||
1151 | /* | |
1152 | This function prepares only input DMA table for synhronic symmetric | |
1153 | operations (HASH) | |
1154 | */ | |
1155 | int sep_prepare_input_dma_table(unsigned long app_virt_addr, | |
1156 | unsigned long data_size, | |
1157 | unsigned long block_size, | |
1158 | unsigned long *lli_table_ptr, | |
1159 | unsigned long *num_entries_ptr, | |
1160 | unsigned long *table_data_size_ptr, | |
1161 | bool isKernelVirtualAddress) | |
1162 | ||
1163 | { | |
1164 | /* pointer to the info entry of the table - the last entry */ | |
1165 | struct sep_lli_entry_t *info_entry_ptr; | |
1166 | ||
1167 | /* array of pointers ot page */ | |
1168 | struct sep_lli_entry_t *lli_array_ptr; | |
1169 | ||
1170 | /* points to the first entry to be processed in the lli_in_array */ | |
1171 | unsigned long current_entry; | |
1172 | ||
1173 | /* num entries in the virtual buffer */ | |
1174 | unsigned long sep_lli_entries; | |
1175 | ||
1176 | /* lli table pointer */ | |
1177 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1178 | ||
1179 | /* the total data in one table */ | |
1180 | unsigned long table_data_size; | |
1181 | ||
1182 | /* number of entries in lli table */ | |
1183 | unsigned long num_entries_in_table; | |
1184 | ||
1185 | /* next table address */ | |
1186 | unsigned long lli_table_alloc_addr; | |
1187 | ||
1188 | /* result */ | |
1189 | unsigned long result; | |
1190 | ||
1191 | /*------------------------ | |
1192 | CODE | |
1193 | --------------------------*/ | |
1194 | ||
1195 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1196 | "SEP Driver:--------> sep_prepare_input_dma_table start\n"); | |
1197 | ||
1198 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver:data_size is %lu\n", | |
1199 | data_size); | |
1200 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, "SEP Driver:block_size is %lu\n", | |
1201 | block_size); | |
1202 | ||
1203 | /* initialize the pages pointers */ | |
1204 | sep_in_page_array = 0; | |
1205 | sep_in_num_pages = 0; | |
1206 | ||
1207 | if (data_size == 0) { | |
1208 | /* special case - created 2 entries table with zero data */ | |
1209 | in_lli_table_ptr = (struct sep_lli_entry_t *)(g_sep_shared_area_addr + | |
1210 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES); | |
1211 | in_lli_table_ptr->physical_address = g_sep_shared_area_addr + | |
1212 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
1213 | in_lli_table_ptr->block_size = 0; | |
1214 | ||
1215 | in_lli_table_ptr++; | |
1216 | in_lli_table_ptr->physical_address = 0xFFFFFFFF; | |
1217 | in_lli_table_ptr->block_size = 0; | |
1218 | ||
1219 | *lli_table_ptr = g_sep_phys_shared_area_addr + | |
1220 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
1221 | *num_entries_ptr = 2; | |
1222 | *table_data_size_ptr = 0; | |
1223 | ||
1224 | goto end_function; | |
1225 | } | |
1226 | ||
1227 | /* check if the pages are in Kernel Virtual Address layout */ | |
1228 | if (isKernelVirtualAddress == true) | |
1229 | /* lock the pages of the kernel buffer and translate them to pages */ | |
1230 | result = sep_lock_kernel_pages(app_virt_addr, | |
1231 | data_size, | |
1232 | &sep_in_num_pages, | |
1233 | &lli_array_ptr, | |
1234 | &sep_in_page_array); | |
1235 | else | |
1236 | /* lock the pages of the user buffer and translate them to pages */ | |
1237 | result = sep_lock_user_pages(app_virt_addr, | |
1238 | data_size, | |
1239 | &sep_in_num_pages, | |
1240 | &lli_array_ptr, | |
1241 | &sep_in_page_array); | |
1242 | ||
1243 | if (result) | |
1244 | return result; | |
1245 | ||
1246 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1247 | "SEP Driver:output sep_in_num_pages is %lu\n", | |
1248 | sep_in_num_pages); | |
1249 | ||
1250 | current_entry = 0; | |
1251 | info_entry_ptr = 0; | |
1252 | sep_lli_entries = sep_in_num_pages; | |
1253 | ||
1254 | /* initiate to point after the message area */ | |
1255 | lli_table_alloc_addr = g_sep_shared_area_addr + | |
1256 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
1257 | ||
1258 | /* loop till all the entries in in array are not processed */ | |
1259 | while (current_entry < sep_lli_entries) { | |
1260 | /* set the new input and output tables */ | |
1261 | in_lli_table_ptr = (struct sep_lli_entry_t *)lli_table_alloc_addr; | |
1262 | ||
1263 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * | |
1264 | SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; | |
1265 | ||
1266 | /* calculate the maximum size of data for input table */ | |
1267 | table_data_size = sep_calculate_lli_table_max_size( | |
1268 | &lli_array_ptr[current_entry], | |
1269 | (sep_lli_entries - current_entry)); | |
1270 | ||
1271 | /* now calculate the table size so that it will be module block size */ | |
1272 | table_data_size = (table_data_size / block_size) * block_size; | |
1273 | ||
1274 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1275 | "SEP Driver:output table_data_size is %lu\n", | |
1276 | table_data_size); | |
1277 | ||
1278 | /* construct input lli table */ | |
1279 | sep_build_lli_table(&lli_array_ptr[current_entry], | |
1280 | in_lli_table_ptr, | |
1281 | ¤t_entry, | |
1282 | &num_entries_in_table, | |
1283 | table_data_size); | |
1284 | ||
1285 | if (info_entry_ptr == 0) { | |
1286 | /* set the output parameters to physical addresses */ | |
1287 | *lli_table_ptr = sep_shared_area_virt_to_phys( | |
1288 | (unsigned long)in_lli_table_ptr); | |
1289 | *num_entries_ptr = num_entries_in_table; | |
1290 | *table_data_size_ptr = table_data_size; | |
1291 | ||
1292 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1293 | "SEP Driver:output lli_table_in_ptr is %08lx\n", | |
1294 | *lli_table_ptr); | |
1295 | } else { | |
1296 | /* update the info entry of the previous in table */ | |
1297 | info_entry_ptr->physical_address = sep_shared_area_virt_to_phys( | |
1298 | (unsigned long)in_lli_table_ptr); | |
1299 | info_entry_ptr->block_size = ((num_entries_in_table) << 24) | | |
1300 | (table_data_size); | |
1301 | } | |
1302 | ||
1303 | /* save the pointer to the info entry of the current tables */ | |
1304 | info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
1305 | } | |
1306 | ||
1307 | /* print input tables */ | |
1308 | sep_debug_print_lli_tables((struct sep_lli_entry_t *) | |
1309 | sep_shared_area_phys_to_virt(*lli_table_ptr), | |
1310 | *num_entries_ptr, | |
1311 | *table_data_size_ptr); | |
1312 | ||
1313 | /* the array of the pages */ | |
1314 | kfree(lli_array_ptr); | |
1315 | ||
1316 | end_function: | |
1317 | ||
1318 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1319 | "SEP Driver:<-------- sep_prepare_input_dma_table end\n"); | |
1320 | ||
1321 | return 0; | |
1322 | ||
1323 | } | |
1324 | ||
1325 | /* | |
1326 | This function builds input and output DMA tables for synhronic | |
1327 | symmetric operations (AES, DES). It also checks that each table | |
1328 | is of the modular block size | |
1329 | */ | |
1330 | int sep_prepare_input_output_dma_table(unsigned long app_virt_in_addr, | |
1331 | unsigned long app_virt_out_addr, | |
1332 | unsigned long data_size, | |
1333 | unsigned long block_size, | |
1334 | unsigned long *lli_table_in_ptr, | |
1335 | unsigned long *lli_table_out_ptr, | |
1336 | unsigned long *in_num_entries_ptr, | |
1337 | unsigned long *out_num_entries_ptr, | |
1338 | unsigned long *table_data_size_ptr, | |
1339 | bool isKernelVirtualAddress) | |
1340 | ||
1341 | { | |
1342 | /* array of pointers of page */ | |
1343 | struct sep_lli_entry_t *lli_in_array; | |
1344 | ||
1345 | /* array of pointers of page */ | |
1346 | struct sep_lli_entry_t *lli_out_array; | |
1347 | ||
1348 | /* result */ | |
1349 | int result; | |
1350 | ||
1351 | ||
1352 | /*------------------------ | |
1353 | CODE | |
1354 | --------------------------*/ | |
1355 | ||
1356 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1357 | "SEP Driver:--------> sep_prepare_input_output_dma_table start\n"); | |
1358 | ||
1359 | result = 0; | |
1360 | ||
1361 | /* initialize the pages pointers */ | |
1362 | sep_in_page_array = 0; | |
1363 | sep_out_page_array = 0; | |
1364 | ||
1365 | /* check if the pages are in Kernel Virtual Address layout */ | |
1366 | if (isKernelVirtualAddress == true) { | |
1367 | /* lock the pages of the kernel buffer and translate them to pages */ | |
1368 | result = sep_lock_kernel_pages(app_virt_in_addr, | |
1369 | data_size, | |
1370 | &sep_in_num_pages, | |
1371 | &lli_in_array, | |
1372 | &sep_in_page_array); | |
1373 | if (result) { | |
1374 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1375 | "SEP Driver: sep_lock_kernel_pages for input virtual buffer failed\n"); | |
1376 | goto end_function; | |
1377 | } | |
1378 | } else { | |
1379 | /* lock the pages of the user buffer and translate them to pages */ | |
1380 | result = sep_lock_user_pages(app_virt_in_addr, | |
1381 | data_size, | |
1382 | &sep_in_num_pages, | |
1383 | &lli_in_array, | |
1384 | &sep_in_page_array); | |
1385 | if (result) { | |
1386 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1387 | "SEP Driver: sep_lock_user_pages for input virtual buffer failed\n"); | |
1388 | goto end_function; | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | if (isKernelVirtualAddress == true) { | |
1393 | result = sep_lock_kernel_pages(app_virt_out_addr, | |
1394 | data_size, | |
1395 | &sep_out_num_pages, | |
1396 | &lli_out_array, | |
1397 | &sep_out_page_array); | |
1398 | if (result) { | |
1399 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1400 | "SEP Driver: sep_lock_kernel_pages for output virtual buffer failed\n"); | |
1401 | goto end_function_with_error1; | |
1402 | } | |
1403 | } else { | |
1404 | result = sep_lock_user_pages(app_virt_out_addr, | |
1405 | data_size, | |
1406 | &sep_out_num_pages, | |
1407 | &lli_out_array, | |
1408 | &sep_out_page_array); | |
1409 | if (result) { | |
1410 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1411 | "SEP Driver: sep_lock_user_pages for output virtual buffer failed\n"); | |
1412 | goto end_function_with_error1; | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | ||
1417 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1418 | "sep_in_num_pages is %lu\n", sep_in_num_pages); | |
1419 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1420 | "sep_out_num_pages is %lu\n", sep_out_num_pages); | |
1421 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1422 | "SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n", | |
1423 | SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); | |
1424 | ||
1425 | ||
1426 | /* call the fucntion that creates table from the lli arrays */ | |
1427 | result = sep_construct_dma_tables_from_lli(lli_in_array, | |
1428 | sep_in_num_pages, | |
1429 | lli_out_array, | |
1430 | sep_out_num_pages, | |
1431 | block_size, | |
1432 | lli_table_in_ptr, | |
1433 | lli_table_out_ptr, | |
1434 | in_num_entries_ptr, | |
1435 | out_num_entries_ptr, | |
1436 | table_data_size_ptr); | |
1437 | if (result) { | |
1438 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1439 | "SEP Driver: sep_construct_dma_tables_from_lli failed\n"); | |
1440 | goto end_function_with_error2; | |
1441 | } | |
1442 | ||
1443 | /* fall through - free the lli entry arrays */ | |
1444 | ||
1445 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "in_num_entries_ptr is %08lx\n", | |
1446 | *in_num_entries_ptr); | |
1447 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "out_num_entries_ptr is %08lx\n", | |
1448 | *out_num_entries_ptr); | |
1449 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "table_data_size_ptr is %08lx\n", | |
1450 | *table_data_size_ptr); | |
1451 | ||
1452 | ||
1453 | end_function_with_error2: | |
1454 | ||
1455 | kfree(lli_out_array); | |
1456 | ||
1457 | end_function_with_error1: | |
1458 | ||
1459 | kfree(lli_in_array); | |
1460 | ||
1461 | end_function: | |
1462 | ||
1463 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, | |
1464 | "SEP Driver:<-------- sep_prepare_input_output_dma_table end result = %d\n", | |
1465 | (int)result); | |
1466 | ||
1467 | return result; | |
1468 | ||
1469 | } | |
1470 | ||
1471 | ||
1472 | /* | |
1473 | This function creates the input and output dma tables for | |
1474 | symmetric operations (AES/DES) according to the block size from LLI arays | |
1475 | */ | |
1476 | int sep_construct_dma_tables_from_lli(struct sep_lli_entry_t *lli_in_array, | |
1477 | unsigned long sep_in_lli_entries, | |
1478 | struct sep_lli_entry_t *lli_out_array, | |
1479 | unsigned long sep_out_lli_entries, | |
1480 | unsigned long block_size, | |
1481 | unsigned long *lli_table_in_ptr, | |
1482 | unsigned long *lli_table_out_ptr, | |
1483 | unsigned long *in_num_entries_ptr, | |
1484 | unsigned long *out_num_entries_ptr, | |
1485 | unsigned long *table_data_size_ptr) | |
1486 | { | |
1487 | /* points to the area where next lli table can be allocated */ | |
1488 | unsigned long lli_table_alloc_addr; | |
1489 | ||
1490 | /* input lli table */ | |
1491 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1492 | ||
1493 | /* output lli table */ | |
1494 | struct sep_lli_entry_t *out_lli_table_ptr; | |
1495 | ||
1496 | /* pointer to the info entry of the table - the last entry */ | |
1497 | struct sep_lli_entry_t *info_in_entry_ptr; | |
1498 | ||
1499 | /* pointer to the info entry of the table - the last entry */ | |
1500 | struct sep_lli_entry_t *info_out_entry_ptr; | |
1501 | ||
1502 | /* points to the first entry to be processed in the lli_in_array */ | |
1503 | unsigned long current_in_entry; | |
1504 | ||
1505 | /* points to the first entry to be processed in the lli_out_array */ | |
1506 | unsigned long current_out_entry; | |
1507 | ||
1508 | /* max size of the input table */ | |
1509 | unsigned long in_table_data_size; | |
1510 | ||
1511 | /* max size of the output table */ | |
1512 | unsigned long out_table_data_size; | |
1513 | ||
1514 | /* flag te signifies if this is the first tables build from the arrays */ | |
1515 | unsigned long first_table_flag; | |
1516 | ||
1517 | /* the data size that should be in table */ | |
1518 | unsigned long table_data_size; | |
1519 | ||
1520 | /* number of etnries in the input table */ | |
1521 | unsigned long num_entries_in_table; | |
1522 | ||
1523 | /* number of etnries in the output table */ | |
1524 | unsigned long num_entries_out_table; | |
1525 | ||
1526 | /*--------------------- | |
1527 | CODE | |
1528 | ------------------------*/ | |
1529 | ||
1530 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1531 | "SEP Driver:--------> sep_construct_dma_tables_from_lli start\n"); | |
1532 | ||
1533 | /* initiate to pint after the message area */ | |
1534 | lli_table_alloc_addr = g_sep_shared_area_addr + | |
1535 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
1536 | ||
1537 | current_in_entry = 0; | |
1538 | current_out_entry = 0; | |
1539 | first_table_flag = 1; | |
1540 | info_in_entry_ptr = 0; | |
1541 | info_out_entry_ptr = 0; | |
1542 | ||
1543 | /* loop till all the entries in in array are not processed */ | |
1544 | while (current_in_entry < sep_in_lli_entries) { | |
1545 | /* set the new input and output tables */ | |
1546 | in_lli_table_ptr = (struct sep_lli_entry_t *)lli_table_alloc_addr; | |
1547 | ||
1548 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * | |
1549 | SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; | |
1550 | ||
1551 | /* set the first output tables */ | |
1552 | out_lli_table_ptr = (struct sep_lli_entry_t *)lli_table_alloc_addr; | |
1553 | ||
1554 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * | |
1555 | SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; | |
1556 | ||
1557 | /* calculate the maximum size of data for input table */ | |
1558 | in_table_data_size = | |
1559 | sep_calculate_lli_table_max_size( | |
1560 | &lli_in_array[current_in_entry], | |
1561 | (sep_in_lli_entries - current_in_entry)); | |
1562 | ||
1563 | /* calculate the maximum size of data for output table */ | |
1564 | out_table_data_size = | |
1565 | sep_calculate_lli_table_max_size( | |
1566 | &lli_out_array[current_out_entry], | |
1567 | (sep_out_lli_entries - current_out_entry)); | |
1568 | ||
1569 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1570 | "SEP Driver:in_table_data_size is %lu\n", in_table_data_size); | |
1571 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1572 | "SEP Driver:out_table_data_size is %lu\n", out_table_data_size); | |
1573 | ||
1574 | /* check where the data is smallest */ | |
1575 | table_data_size = in_table_data_size; | |
1576 | if (table_data_size > out_table_data_size) | |
1577 | table_data_size = out_table_data_size; | |
1578 | ||
1579 | /* now calculate the table size so that it will be module block size */ | |
1580 | table_data_size = (table_data_size / block_size) * block_size; | |
1581 | ||
1582 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, | |
1583 | "SEP Driver:table_data_size is %lu\n", | |
1584 | table_data_size); | |
1585 | ||
1586 | /* construct input lli table */ | |
1587 | sep_build_lli_table(&lli_in_array[current_in_entry], | |
1588 | in_lli_table_ptr, | |
1589 | ¤t_in_entry, | |
1590 | &num_entries_in_table, | |
1591 | table_data_size); | |
1592 | ||
1593 | /* construct output lli table */ | |
1594 | sep_build_lli_table(&lli_out_array[current_out_entry], | |
1595 | out_lli_table_ptr, | |
1596 | ¤t_out_entry, | |
1597 | &num_entries_out_table, | |
1598 | table_data_size); | |
1599 | ||
1600 | /* if info entry is null - this is the first table built */ | |
1601 | if (info_in_entry_ptr == 0) { | |
1602 | /* set the output parameters to physical addresses */ | |
1603 | *lli_table_in_ptr = | |
1604 | sep_shared_area_virt_to_phys((unsigned long)in_lli_table_ptr); | |
1605 | *in_num_entries_ptr = num_entries_in_table; | |
1606 | *lli_table_out_ptr = | |
1607 | sep_shared_area_virt_to_phys((unsigned long)out_lli_table_ptr); | |
1608 | *out_num_entries_ptr = num_entries_out_table; | |
1609 | *table_data_size_ptr = table_data_size; | |
1610 | ||
1611 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1612 | "SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr); | |
1613 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1614 | "SEP Driver:output lli_table_out_ptr is %08lx\n", *lli_table_out_ptr); | |
1615 | } else { | |
1616 | /* update the info entry of the previous in table */ | |
1617 | info_in_entry_ptr->physical_address = | |
1618 | sep_shared_area_virt_to_phys((unsigned long)in_lli_table_ptr); | |
1619 | info_in_entry_ptr->block_size = | |
1620 | ((num_entries_in_table) << 24) | (table_data_size); | |
1621 | ||
1622 | /* update the info entry of the previous in table */ | |
1623 | info_out_entry_ptr->physical_address = | |
1624 | sep_shared_area_virt_to_phys((unsigned long)out_lli_table_ptr); | |
1625 | info_out_entry_ptr->block_size = | |
1626 | ((num_entries_out_table) << 24) | (table_data_size); | |
1627 | } | |
1628 | ||
1629 | /* save the pointer to the info entry of the current tables */ | |
1630 | info_in_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
1631 | info_out_entry_ptr = out_lli_table_ptr + num_entries_out_table - 1; | |
1632 | ||
1633 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1634 | "SEP Driver:output num_entries_out_table is %lu\n", | |
1635 | (unsigned long)num_entries_out_table); | |
1636 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1637 | "SEP Driver:output info_in_entry_ptr is %lu\n", | |
1638 | (unsigned long)info_in_entry_ptr); | |
1639 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1640 | "SEP Driver:output info_out_entry_ptr is %lu\n", | |
1641 | (unsigned long)info_out_entry_ptr); | |
1642 | } | |
1643 | ||
1644 | /* print input tables */ | |
1645 | sep_debug_print_lli_tables( | |
1646 | (struct sep_lli_entry_t *) | |
1647 | sep_shared_area_phys_to_virt(*lli_table_in_ptr), | |
1648 | *in_num_entries_ptr, | |
1649 | *table_data_size_ptr); | |
1650 | ||
1651 | /* print output tables */ | |
1652 | sep_debug_print_lli_tables( | |
1653 | (struct sep_lli_entry_t *) | |
1654 | sep_shared_area_phys_to_virt(*lli_table_out_ptr), | |
1655 | *out_num_entries_ptr, | |
1656 | *table_data_size_ptr); | |
1657 | ||
1658 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1659 | "SEP Driver:<-------- sep_construct_dma_tables_from_lli end\n"); | |
1660 | ||
1661 | return 0; | |
1662 | } | |
1663 | ||
1664 | /* | |
1665 | this function calculates the size of data that can be inserted into the lli | |
1666 | table from this array the condition is that either the table is full | |
1667 | (all etnries are entered), or there are no more entries in the lli array | |
1668 | */ | |
1669 | unsigned long sep_calculate_lli_table_max_size( | |
1670 | struct sep_lli_entry_t *lli_in_array_ptr, | |
1671 | unsigned long num_array_entries) | |
1672 | { | |
1673 | /* table data size */ | |
1674 | unsigned long table_data_size; | |
1675 | ||
1676 | /* counter */ | |
1677 | unsigned long counter; | |
1678 | ||
1679 | /*--------------------- | |
1680 | CODE | |
1681 | ----------------------*/ | |
1682 | ||
1683 | table_data_size = 0; | |
1684 | ||
1685 | /* calculate the data in the out lli table if till we fill the whole | |
1686 | table or till the data has ended */ | |
1687 | for (counter = 0; | |
1688 | (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) && | |
1689 | (counter < num_array_entries); counter++) | |
1690 | table_data_size += lli_in_array_ptr[counter].block_size; | |
1691 | ||
1692 | return table_data_size; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | this functions builds ont lli table from the lli_array according to | |
1697 | the given size of data | |
1698 | */ | |
1699 | static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, | |
1700 | struct sep_lli_entry_t *lli_table_ptr, | |
1701 | unsigned long *num_processed_entries_ptr, | |
1702 | unsigned long *num_table_entries_ptr, | |
1703 | unsigned long table_data_size) | |
1704 | { | |
1705 | /* current table data size */ | |
1706 | unsigned long curr_table_data_size; | |
1707 | ||
1708 | /* counter of lli array entry */ | |
1709 | unsigned long array_counter; | |
1710 | ||
1711 | /*----------------------- | |
1712 | CODE | |
1713 | ---------------------------*/ | |
1714 | ||
1715 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1716 | "SEP Driver:--------> sep_build_lli_table start\n"); | |
1717 | ||
1718 | /* init currrent table data size and lli array entry counter */ | |
1719 | curr_table_data_size = 0; | |
1720 | array_counter = 0; | |
1721 | *num_table_entries_ptr = 1; | |
1722 | ||
1723 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1724 | "SEP Driver:table_data_size is %lu\n", | |
1725 | table_data_size); | |
1726 | ||
1727 | /* fill the table till table size reaches the needed amount */ | |
1728 | while (curr_table_data_size < table_data_size) { | |
1729 | /* update the number of entries in table */ | |
1730 | (*num_table_entries_ptr)++; | |
1731 | ||
1732 | lli_table_ptr->physical_address = | |
1733 | lli_array_ptr[array_counter].physical_address; | |
1734 | lli_table_ptr->block_size = lli_array_ptr[array_counter].block_size; | |
1735 | curr_table_data_size += lli_table_ptr->block_size; | |
1736 | ||
1737 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1738 | "SEP Driver:lli_table_ptr is %08lx\n", | |
1739 | (unsigned long)lli_table_ptr); | |
1740 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1741 | "SEP Driver:lli_table_ptr->physical_address is %08lx\n", | |
1742 | lli_table_ptr->physical_address); | |
1743 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1744 | "SEP Driver:lli_table_ptr->block_size is %lu\n", | |
1745 | lli_table_ptr->block_size); | |
1746 | ||
1747 | /* check for overflow of the table data */ | |
1748 | if (curr_table_data_size > table_data_size) { | |
1749 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1750 | "SEP Driver:curr_table_data_size > table_data_size\n"); | |
1751 | ||
1752 | /* update the size of block in the table */ | |
1753 | lli_table_ptr->block_size -= (curr_table_data_size - table_data_size); | |
1754 | ||
1755 | /* update the physical address in the lli array */ | |
1756 | lli_array_ptr[array_counter].physical_address += | |
1757 | lli_table_ptr->block_size; | |
1758 | ||
1759 | /* update the block size left in the lli array */ | |
1760 | lli_array_ptr[array_counter].block_size = | |
1761 | (curr_table_data_size - table_data_size); | |
1762 | } else | |
1763 | /* advance to the next entry in the lli_array */ | |
1764 | array_counter++; | |
1765 | ||
1766 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1767 | "SEP Driver:lli_table_ptr->physical_address is %08lx\n", | |
1768 | lli_table_ptr->physical_address); | |
1769 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1770 | "SEP Driver:lli_table_ptr->block_size is %lu\n", | |
1771 | lli_table_ptr->block_size); | |
1772 | ||
1773 | /* move to the next entry in table */ | |
1774 | lli_table_ptr++; | |
1775 | } | |
1776 | ||
1777 | /* set the info entry to default */ | |
1778 | lli_table_ptr->physical_address = 0xffffffff; | |
1779 | lli_table_ptr->block_size = 0; | |
1780 | ||
1781 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1782 | "SEP Driver:lli_table_ptr is %08lx\n", | |
1783 | (unsigned long)lli_table_ptr); | |
1784 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1785 | "SEP Driver:lli_table_ptr->physical_address is %08lx\n", | |
1786 | lli_table_ptr->physical_address); | |
1787 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1788 | "SEP Driver:lli_table_ptr->block_size is %lu\n", | |
1789 | lli_table_ptr->block_size); | |
1790 | ||
1791 | ||
1792 | /* set the output parameter */ | |
1793 | *num_processed_entries_ptr += array_counter; | |
1794 | ||
1795 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1796 | "SEP Driver:*num_processed_entries_ptr is %lu\n", | |
1797 | *num_processed_entries_ptr); | |
1798 | ||
1799 | ||
1800 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1801 | "SEP Driver:<-------- sep_build_lli_table end\n"); | |
1802 | ||
1803 | return; | |
1804 | } | |
1805 | ||
1806 | /* | |
1807 | this function goes over the list of the print created tables and | |
1808 | prints all the data | |
1809 | */ | |
1810 | static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, | |
1811 | unsigned long num_table_entries, | |
1812 | unsigned long table_data_size) | |
1813 | { | |
1814 | unsigned long table_count; | |
1815 | ||
1816 | unsigned long entries_count; | |
1817 | /*----------------------------- | |
1818 | CODE | |
1819 | -------------------------------*/ | |
1820 | ||
1821 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1822 | "SEP Driver:--------> sep_debug_print_lli_tables start\n"); | |
1823 | ||
1824 | table_count = 1; | |
1825 | while ((unsigned long)lli_table_ptr != 0xffffffff) { | |
1826 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
1827 | "SEP Driver: lli table %08lx, table_data_size is %lu\n", | |
1828 | table_count, | |
1829 | table_data_size); | |
1830 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1831 | "SEP Driver: num_table_entries is %lu\n", num_table_entries); | |
1832 | ||
1833 | /* print entries of the table (without info entry) */ | |
1834 | for (entries_count = 0; | |
1835 | entries_count < num_table_entries; | |
1836 | entries_count++, lli_table_ptr++) { | |
1837 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1838 | "SEP Driver:lli_table_ptr address is %08lx\n", | |
1839 | (unsigned long)lli_table_ptr); | |
1840 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
1841 | "SEP Driver:phys address is %08lx block size is %lu\n", | |
1842 | lli_table_ptr->physical_address, lli_table_ptr->block_size); | |
1843 | } | |
1844 | ||
1845 | /* point to the info entry */ | |
1846 | lli_table_ptr--; | |
1847 | ||
1848 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1849 | "SEP Driver:phys lli_table_ptr->block_size is %lu\n", | |
1850 | lli_table_ptr->block_size); | |
1851 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1852 | "SEP Driver:phys lli_table_ptr->physical_address is %08lx\n", | |
1853 | lli_table_ptr->physical_address); | |
1854 | ||
1855 | ||
1856 | table_data_size = lli_table_ptr->block_size & 0xffffff; | |
1857 | num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff; | |
1858 | lli_table_ptr = (struct sep_lli_entry_t *) | |
1859 | (lli_table_ptr->physical_address); | |
1860 | ||
1861 | DEBUG_PRINT_3(SEP_DEBUG_LEVEL_EXTENDED, | |
1862 | "SEP Driver:phys table_data_size is %lu num_table_entries is \ | |
1863 | %lu lli_table_ptr is%lu\n", | |
1864 | table_data_size, num_table_entries, (unsigned long)lli_table_ptr); | |
1865 | ||
1866 | if ((unsigned long)lli_table_ptr != 0xffffffff) | |
1867 | lli_table_ptr = (struct sep_lli_entry_t *)sep_shared_area_phys_to_virt( | |
1868 | (unsigned long)lli_table_ptr); | |
1869 | ||
1870 | table_count++; | |
1871 | } | |
1872 | ||
1873 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1874 | "SEP Driver:<-------- sep_debug_print_lli_tables end\n"); | |
1875 | } | |
1876 | ||
1877 | ||
1878 | /* | |
1879 | This function locks all the physical pages of the application virtual buffer | |
1880 | and construct a basic lli array, where each entry holds the physical page | |
1881 | address and the size that application data holds in this physical pages | |
1882 | */ | |
1883 | int sep_lock_user_pages(unsigned long app_virt_addr, | |
1884 | unsigned long data_size, | |
1885 | unsigned long *num_pages_ptr, | |
1886 | struct sep_lli_entry_t **lli_array_ptr, | |
1887 | struct page ***page_array_ptr) | |
1888 | ||
1889 | { | |
1890 | /* error */ | |
1891 | int error; | |
1892 | ||
1893 | /* the the page of the end address of the user space buffer */ | |
1894 | unsigned long end_page; | |
1895 | ||
1896 | /* the page of the start address of the user space buffer */ | |
1897 | unsigned long start_page; | |
1898 | ||
1899 | /* the range in pages */ | |
1900 | unsigned long num_pages; | |
1901 | ||
1902 | /* array of pointers ot page */ | |
1903 | struct page **page_array; | |
1904 | ||
1905 | /* array of lli */ | |
1906 | struct sep_lli_entry_t *lli_array; | |
1907 | ||
1908 | /* count */ | |
1909 | unsigned long count; | |
1910 | ||
1911 | /* result */ | |
1912 | int result; | |
1913 | ||
1914 | /*------------------------ | |
1915 | CODE | |
1916 | --------------------------*/ | |
1917 | ||
1918 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1919 | "SEP Driver:--------> sep_lock_user_pages start\n"); | |
1920 | ||
1921 | error = 0; | |
1922 | ||
1923 | /* set start and end pages and num pages */ | |
1924 | end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
1925 | start_page = app_virt_addr >> PAGE_SHIFT; | |
1926 | num_pages = end_page - start_page + 1; | |
1927 | ||
1928 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1929 | "SEP Driver: app_virt_addr is %08lx\n", | |
1930 | app_virt_addr); | |
1931 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1932 | "SEP Driver: data_size is %lu\n", | |
1933 | data_size); | |
1934 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1935 | "SEP Driver: start_page is %lu\n", | |
1936 | start_page); | |
1937 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1938 | "SEP Driver: end_page is %lu\n", | |
1939 | end_page); | |
1940 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
1941 | "SEP Driver: num_pages is %lu\n", | |
1942 | num_pages); | |
1943 | ||
1944 | /* allocate array of pages structure pointers */ | |
1945 | page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); | |
1946 | if (!page_array) { | |
1947 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1948 | "SEP Driver: kmalloc for page_array failed\n"); | |
1949 | ||
1950 | error = -ENOMEM; | |
1951 | goto end_function; | |
1952 | } | |
1953 | ||
1954 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); | |
1955 | if (!lli_array) { | |
1956 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
1957 | "SEP Driver: kmalloc for lli_array failed\n"); | |
1958 | ||
1959 | error = -ENOMEM; | |
1960 | goto end_function_with_error1; | |
1961 | } | |
1962 | ||
1963 | /* convert the application virtual address into a set of physical */ | |
1964 | down_read(¤t->mm->mmap_sem); | |
1965 | result = get_user_pages(current, current->mm, app_virt_addr, num_pages, 1, 0, | |
1966 | page_array, | |
1967 | 0); | |
1968 | up_read(¤t->mm->mmap_sem); | |
1969 | ||
1970 | /* check the number of pages locked - if not all then exit with error */ | |
1971 | if (result != num_pages) { | |
1972 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
1973 | "SEP Driver: not all pages locked by get_user_pages\n"); | |
1974 | ||
1975 | error = -ENOMEM; | |
1976 | goto end_function_with_error2; | |
1977 | } | |
1978 | ||
1979 | /* flush the cache */ | |
1980 | for (count = 0; count < num_pages; count++) | |
1981 | flush_dcache_page(page_array[count]); | |
1982 | ||
1983 | /* set the start address of the first page - app data may start not at | |
1984 | the beginning of the page */ | |
1985 | lli_array[0].physical_address = ( | |
1986 | (unsigned long)page_to_phys(page_array[0])) + | |
1987 | (app_virt_addr & (~PAGE_MASK)) ; | |
1988 | ||
1989 | /* check that not all the data is in the first page only */ | |
1990 | if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size) | |
1991 | lli_array[0].block_size = data_size; | |
1992 | else | |
1993 | lli_array[0].block_size = PAGE_SIZE - (app_virt_addr & (~PAGE_MASK)); | |
1994 | ||
1995 | /* debug print */ | |
1996 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
1997 | "lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", | |
1998 | lli_array[0].physical_address, | |
1999 | lli_array[0].block_size); | |
2000 | ||
2001 | /* go from the second page to the prev before last */ | |
2002 | for (count = 1; count < (num_pages - 1); count++) { | |
2003 | lli_array[count].physical_address = | |
2004 | (unsigned long)page_to_phys(page_array[count]); | |
2005 | lli_array[count].block_size = PAGE_SIZE; | |
2006 | ||
2007 | DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, | |
2008 | "lli_array[%lu].physical_address is %08lx, \ | |
2009 | lli_array[%lu].block_size is %lu\n", | |
2010 | count, lli_array[count].physical_address, | |
2011 | count, | |
2012 | lli_array[count].block_size); | |
2013 | } | |
2014 | ||
2015 | /* if more then 1 pages locked - then update for the last page size needed */ | |
2016 | if (num_pages > 1) { | |
2017 | /* update the address of the last page */ | |
2018 | lli_array[count].physical_address = | |
2019 | (unsigned long)page_to_phys(page_array[count]); | |
2020 | ||
2021 | /* set the size of the last page */ | |
2022 | lli_array[count].block_size = (app_virt_addr + data_size) & | |
2023 | (~PAGE_MASK); | |
2024 | ||
2025 | if (lli_array[count].block_size == 0) { | |
2026 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, | |
2027 | "app_virt_addr is %08lx\n", | |
2028 | app_virt_addr); | |
2029 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "data_size is %lu\n", data_size); | |
2030 | while (1); | |
2031 | } | |
2032 | DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, | |
2033 | "lli_array[%lu].physical_address is %08lx, \ | |
2034 | lli_array[%lu].block_size is %lu\n", | |
2035 | count, lli_array[count].physical_address, | |
2036 | count, | |
2037 | lli_array[count].block_size); | |
2038 | } | |
2039 | ||
2040 | /* set output params */ | |
2041 | *lli_array_ptr = lli_array; | |
2042 | *num_pages_ptr = num_pages; | |
2043 | *page_array_ptr = page_array; | |
2044 | ||
2045 | goto end_function; | |
2046 | ||
2047 | end_function_with_error2: | |
2048 | ||
2049 | /* release the cache */ | |
2050 | for (count = 0; count < num_pages; count++) | |
2051 | page_cache_release(page_array[count]); | |
2052 | ||
2053 | /* free lli array */ | |
2054 | kfree(lli_array); | |
2055 | ||
2056 | end_function_with_error1: | |
2057 | ||
2058 | /* free page array */ | |
2059 | kfree(page_array); | |
2060 | ||
2061 | end_function: | |
2062 | ||
2063 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2064 | "SEP Driver:<-------- sep_lock_user_pages end\n"); | |
2065 | ||
2066 | return 0; | |
2067 | } | |
2068 | ||
2069 | /* | |
2070 | This function locks all the physical pages of the kernel virtual buffer | |
2071 | and construct a basic lli array, where each entry holds the physical | |
2072 | page address and the size that application data holds in this physical pages | |
2073 | */ | |
2074 | int sep_lock_kernel_pages(unsigned long kernel_virt_addr, | |
2075 | unsigned long data_size, | |
2076 | unsigned long *num_pages_ptr, | |
2077 | struct sep_lli_entry_t **lli_array_ptr, | |
2078 | struct page ***page_array_ptr) | |
2079 | ||
2080 | { | |
2081 | /* error */ | |
2082 | int error; | |
2083 | ||
2084 | /* the the page of the end address of the user space buffer */ | |
2085 | unsigned long end_page; | |
2086 | ||
2087 | /* the page of the start address of the user space buffer */ | |
2088 | unsigned long start_page; | |
2089 | ||
2090 | /* the range in pages */ | |
2091 | unsigned long num_pages; | |
2092 | ||
2093 | /* array of lli */ | |
2094 | struct sep_lli_entry_t *lli_array; | |
2095 | ||
2096 | /* next kernel address to map */ | |
2097 | unsigned long next_kernel_address; | |
2098 | ||
2099 | /* count */ | |
2100 | unsigned long count; | |
2101 | ||
2102 | ||
2103 | /*------------------------ | |
2104 | CODE | |
2105 | --------------------------*/ | |
2106 | ||
2107 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2108 | "SEP Driver:--------> sep_lock_kernel_pages start\n"); | |
2109 | ||
2110 | error = 0; | |
2111 | ||
2112 | /* set start and end pages and num pages */ | |
2113 | end_page = (kernel_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
2114 | start_page = kernel_virt_addr >> PAGE_SHIFT; | |
2115 | num_pages = end_page - start_page + 1; | |
2116 | ||
2117 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2118 | "SEP Driver: kernel_virt_addr is %08lx\n", | |
2119 | kernel_virt_addr); | |
2120 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2121 | "SEP Driver: data_size is %lu\n", | |
2122 | data_size); | |
2123 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2124 | "SEP Driver: start_page is %lx\n", | |
2125 | start_page); | |
2126 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2127 | "SEP Driver: end_page is %lx\n", | |
2128 | end_page); | |
2129 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2130 | "SEP Driver: num_pages is %lu\n", | |
2131 | num_pages); | |
2132 | ||
2133 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); | |
2134 | if (!lli_array) { | |
2135 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
2136 | "SEP Driver: kmalloc for lli_array failed\n"); | |
2137 | ||
2138 | error = -ENOMEM; | |
2139 | goto end_function; | |
2140 | } | |
2141 | ||
2142 | /* set the start address of the first page - app data may start not at | |
2143 | the beginning of the page */ | |
2144 | lli_array[0].physical_address = | |
2145 | (unsigned long)virt_to_phys((unsigned long *)kernel_virt_addr); | |
2146 | ||
2147 | /* check that not all the data is in the first page only */ | |
2148 | if ((PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK))) >= data_size) | |
2149 | lli_array[0].block_size = data_size; | |
2150 | else | |
2151 | lli_array[0].block_size = | |
2152 | PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK)); | |
2153 | ||
2154 | /* debug print */ | |
2155 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
2156 | "lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", | |
2157 | lli_array[0].physical_address, | |
2158 | lli_array[0].block_size); | |
2159 | ||
2160 | /* advance the address to the start of the next page */ | |
2161 | next_kernel_address = (kernel_virt_addr & PAGE_MASK) + PAGE_SIZE; | |
2162 | ||
2163 | /* go from the second page to the prev before last */ | |
2164 | for (count = 1; count < (num_pages - 1); count++) { | |
2165 | lli_array[count].physical_address = | |
2166 | (unsigned long)virt_to_phys((unsigned long *)next_kernel_address); | |
2167 | lli_array[count].block_size = PAGE_SIZE; | |
2168 | ||
2169 | DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, | |
2170 | "lli_array[%lu].physical_address is %08lx, \ | |
2171 | lli_array[%lu].block_size is %lu\n", | |
2172 | count, lli_array[count].physical_address, count, | |
2173 | lli_array[count].block_size); | |
2174 | ||
2175 | next_kernel_address += PAGE_SIZE; | |
2176 | } | |
2177 | ||
2178 | /* if more then 1 pages locked - then update for the last page size needed */ | |
2179 | if (num_pages > 1) { | |
2180 | /* update the address of the last page */ | |
2181 | lli_array[count].physical_address = | |
2182 | (unsigned long)virt_to_phys((unsigned long *)next_kernel_address); | |
2183 | ||
2184 | /* set the size of the last page */ | |
2185 | lli_array[count].block_size = | |
2186 | (kernel_virt_addr + data_size) & (~PAGE_MASK); | |
2187 | ||
2188 | if (lli_array[count].block_size == 0) { | |
2189 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, | |
2190 | "app_virt_addr is %08lx\n", | |
2191 | kernel_virt_addr); | |
2192 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_BASIC, "data_size is %lu\n", data_size); | |
2193 | while (1); | |
2194 | } | |
2195 | ||
2196 | DEBUG_PRINT_4(SEP_DEBUG_LEVEL_EXTENDED, | |
2197 | "lli_array[%lu].physical_address is %08lx, \ | |
2198 | lli_array[%lu].block_size is %lu\n", | |
2199 | count, lli_array[count].physical_address, | |
2200 | count, | |
2201 | lli_array[count].block_size); | |
2202 | } | |
2203 | ||
2204 | /* set output params */ | |
2205 | *lli_array_ptr = lli_array; | |
2206 | *num_pages_ptr = num_pages; | |
2207 | *page_array_ptr = 0; | |
2208 | ||
2209 | ||
2210 | end_function: | |
2211 | ||
2212 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2213 | "SEP Driver:<-------- sep_lock_kernel_pages end\n"); | |
2214 | ||
2215 | return 0; | |
2216 | } | |
2217 | ||
2218 | /* | |
2219 | This function releases all the application virtual buffer physical pages, | |
2220 | that were previously locked | |
2221 | */ | |
2222 | int sep_free_dma_pages(struct page **page_array_ptr, | |
2223 | unsigned long num_pages, | |
2224 | unsigned long dirtyFlag) | |
2225 | { | |
2226 | /* count */ | |
2227 | unsigned long count; | |
2228 | ||
2229 | /*------------------- | |
2230 | CODE | |
2231 | ---------------------*/ | |
2232 | ||
2233 | if (dirtyFlag) { | |
2234 | for (count = 0; count < num_pages; count++) { | |
2235 | /* the out array was written, therefore the data was changed */ | |
2236 | if (!PageReserved(page_array_ptr[count])) | |
2237 | SetPageDirty(page_array_ptr[count]); | |
2238 | page_cache_release(page_array_ptr[count]); | |
2239 | } | |
2240 | } else { | |
2241 | /* free in pages - the data was only read, therefore no update was done | |
2242 | on those pages */ | |
2243 | for (count = 0; count < num_pages; count++) | |
2244 | page_cache_release(page_array_ptr[count]); | |
2245 | } | |
2246 | ||
2247 | if (page_array_ptr) | |
2248 | /* free the array */ | |
2249 | kfree(page_array_ptr); | |
2250 | ||
2251 | return 0; | |
2252 | } | |
2253 | ||
2254 | /* | |
2255 | This function raises interrupt to SEP that signals that is has a new | |
2256 | command from HOST | |
2257 | */ | |
2258 | static void sep_send_command_handler() | |
2259 | { | |
2260 | ||
2261 | unsigned long count; | |
2262 | ||
2263 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2264 | "SEP Driver:--------> sep_send_command_handler start\n"); | |
2265 | ||
2266 | sep_set_time(0, 0); | |
2267 | ||
2268 | /* flash cache */ | |
2269 | flush_cache_all(); | |
2270 | ||
2271 | for (count = 0; count < 12 * 4; count += 4) | |
2272 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
2273 | "Word %lu of the message is %lu\n", | |
2274 | count, | |
2275 | *((unsigned long *)(g_sep_shared_area_addr + count))); | |
2276 | ||
2277 | /* update counter */ | |
2278 | sep_host_to_sep_send_counter++; | |
2279 | ||
2280 | /* send interrupt to SEP */ | |
2281 | SEP_WRITE_REGISTER(g_sep_reg_base_address + | |
2282 | HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); | |
2283 | ||
2284 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2285 | "SEP Driver:<-------- sep_send_command_handler end\n"); | |
2286 | ||
2287 | return; | |
2288 | } | |
2289 | ||
2290 | /* | |
2291 | This function raises interrupt to SEPm that signals that is has a | |
2292 | new command from HOST | |
2293 | */ | |
2294 | static void sep_send_reply_command_handler() | |
2295 | { | |
2296 | unsigned long count; | |
2297 | ||
2298 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2299 | "SEP Driver:--------> sep_send_reply_command_handler start\n"); | |
2300 | ||
2301 | /* flash cache */ | |
2302 | flush_cache_all(); | |
2303 | ||
2304 | for (count = 0; count < 12 * 4; count += 4) | |
2305 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
2306 | "Word %lu of the message is %lu\n", | |
2307 | count, | |
2308 | *((unsigned long *)(g_sep_shared_area_addr + count))); | |
2309 | ||
2310 | ||
2311 | /* update counter */ | |
2312 | sep_host_to_sep_send_counter++; | |
2313 | ||
2314 | /* send the interrupt to SEP */ | |
2315 | SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_HOST_SEP_GPR2_REG_ADDR, | |
2316 | sep_host_to_sep_send_counter); | |
2317 | ||
2318 | /* update both counters */ | |
2319 | sep_host_to_sep_send_counter++; | |
2320 | ||
2321 | sep_sep_to_host_reply_counter++; | |
2322 | ||
2323 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2324 | "SEP Driver:<-------- sep_send_reply_command_handler end\n"); | |
2325 | ||
2326 | return; | |
2327 | } | |
2328 | ||
2329 | ||
2330 | ||
2331 | /* | |
2332 | This function handles the allocate data pool memory request | |
2333 | This function returns calculates the physical address of the | |
2334 | allocated memory, and the offset of this area from the mapped address. | |
2335 | Therefore, the FVOs in user space can calculate the exact virtual | |
2336 | address of this allocated memory | |
2337 | */ | |
2338 | static int sep_allocate_data_pool_memory_handler(unsigned long arg) | |
2339 | { | |
2340 | /* error */ | |
2341 | int error; | |
2342 | ||
2343 | /* command paramaters */ | |
2344 | struct sep_driver_alloc_t command_args; | |
2345 | ||
2346 | /*------------------------- | |
2347 | CODE | |
2348 | ----------------------------*/ | |
2349 | ||
2350 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2351 | "SEP Driver:--------> sep_allocate_data_pool_memory_handler start\n"); | |
2352 | ||
2353 | ||
2354 | error = copy_from_user(&command_args, | |
2355 | (void *)arg, | |
2356 | sizeof(struct sep_driver_alloc_t)); | |
2357 | if (error) | |
2358 | goto end_function; | |
2359 | ||
2360 | /* allocate memory */ | |
2361 | if ( | |
2362 | (sep_data_pool_bytes_allocated + command_args.num_bytes) > | |
2363 | SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { | |
2364 | error = -ENOTTY; | |
2365 | goto end_function; | |
2366 | } | |
2367 | ||
2368 | /* set the virtual and physical address */ | |
2369 | command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + | |
2370 | sep_data_pool_bytes_allocated; | |
2371 | command_args.phys_address = g_sep_phys_shared_area_addr + | |
2372 | SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + | |
2373 | sep_data_pool_bytes_allocated; | |
2374 | ||
2375 | /* write the memory back to the user space */ | |
2376 | error = copy_to_user((void *)arg, | |
2377 | (void *)&command_args, | |
2378 | sizeof(struct sep_driver_alloc_t)); | |
2379 | if (error) | |
2380 | goto end_function; | |
2381 | ||
2382 | /* set the allocation */ | |
2383 | sep_data_pool_bytes_allocated += command_args.num_bytes; | |
2384 | ||
2385 | end_function: | |
2386 | ||
2387 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2388 | "SEP Driver:<-------- sep_allocate_data_pool_memory_handler end\n"); | |
2389 | ||
2390 | return error; | |
2391 | } | |
2392 | ||
2393 | /* | |
2394 | This function handles write into allocated data pool command | |
2395 | */ | |
2396 | static int sep_write_into_data_pool_handler(unsigned long arg) | |
2397 | { | |
2398 | /* error */ | |
2399 | int error; | |
2400 | ||
2401 | /* virtual address */ | |
2402 | unsigned long virt_address; | |
2403 | ||
2404 | /* application in address */ | |
2405 | unsigned long app_in_address; | |
2406 | ||
2407 | /* number of bytes */ | |
2408 | unsigned long num_bytes; | |
2409 | ||
2410 | /* address of the data pool */ | |
2411 | unsigned long data_pool_area_addr; | |
2412 | ||
2413 | /*-------------------------- | |
2414 | CODE | |
2415 | -----------------------------*/ | |
2416 | ||
2417 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2418 | "SEP Driver:--------> sep_write_into_data_pool_handler start\n"); | |
2419 | ||
2420 | /* get the application address */ | |
2421 | error = get_user(app_in_address, | |
2422 | &(((struct sep_driver_write_t *)arg)->app_address)); | |
2423 | if (error) | |
2424 | goto end_function; | |
2425 | ||
2426 | /* get the virtual kernel address address */ | |
2427 | error = get_user(virt_address, | |
2428 | &(((struct sep_driver_write_t *)arg)->datapool_address)); | |
2429 | if (error) | |
2430 | goto end_function; | |
2431 | ||
2432 | /* get the number of bytes */ | |
2433 | error = get_user(num_bytes, &(((struct sep_driver_write_t *)arg)->num_bytes)); | |
2434 | if (error) | |
2435 | goto end_function; | |
2436 | ||
2437 | /* calculate the start of the data pool */ | |
2438 | data_pool_area_addr = g_sep_shared_area_addr + | |
2439 | SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; | |
2440 | ||
2441 | ||
2442 | /* check that the range of the virtual kernel address is correct */ | |
2443 | if ((virt_address < data_pool_area_addr) || | |
2444 | (virt_address > (data_pool_area_addr + | |
2445 | SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { | |
2446 | error = -ENOTTY; | |
2447 | goto end_function; | |
2448 | } | |
2449 | ||
2450 | /* copy the application data */ | |
2451 | error = copy_from_user((void *)virt_address, | |
2452 | (void *)app_in_address, | |
2453 | num_bytes); | |
2454 | ||
2455 | end_function: | |
2456 | ||
2457 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2458 | "SEP Driver:<-------- sep_write_into_data_pool_handler end\n"); | |
2459 | ||
2460 | return error; | |
2461 | } | |
2462 | ||
2463 | /* | |
2464 | this function handles the read from data pool command | |
2465 | */ | |
2466 | static int sep_read_from_data_pool_handler(unsigned long arg) | |
2467 | { | |
2468 | /* error */ | |
2469 | int error; | |
2470 | ||
2471 | /* virtual address of dest application buffer */ | |
2472 | unsigned long app_out_address; | |
2473 | ||
2474 | /* virtual address of the data pool */ | |
2475 | unsigned long virt_address; | |
2476 | ||
2477 | /* number bytes */ | |
2478 | unsigned long num_bytes; | |
2479 | ||
2480 | /* address of the data pool */ | |
2481 | unsigned long data_pool_area_addr; | |
2482 | ||
2483 | /*------------------------ | |
2484 | CODE | |
2485 | -----------------------------*/ | |
2486 | ||
2487 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2488 | "SEP Driver:--------> sep_read_from_data_pool_handler start\n"); | |
2489 | ||
2490 | /* get the application address */ | |
2491 | error = get_user(app_out_address, | |
2492 | &(((struct sep_driver_write_t *)arg)->app_address)); | |
2493 | if (error) | |
2494 | goto end_function; | |
2495 | ||
2496 | /* get the virtual kernel address address */ | |
2497 | error = get_user(virt_address, | |
2498 | &(((struct sep_driver_write_t *)arg)->datapool_address)); | |
2499 | if (error) | |
2500 | goto end_function; | |
2501 | ||
2502 | /* get the number of bytes */ | |
2503 | error = get_user(num_bytes, &(((struct sep_driver_write_t *)arg)->num_bytes)); | |
2504 | if (error) | |
2505 | goto end_function; | |
2506 | ||
2507 | /* calculate the start of the data pool */ | |
2508 | data_pool_area_addr = g_sep_shared_area_addr + | |
2509 | SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; | |
2510 | ||
2511 | /* check that the range of the virtual kernel address is correct */ | |
2512 | if ((virt_address < data_pool_area_addr) || | |
2513 | (virt_address > (data_pool_area_addr + | |
2514 | SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { | |
2515 | error = -ENOTTY; | |
2516 | goto end_function; | |
2517 | } | |
2518 | ||
2519 | /* copy the application data */ | |
2520 | error = copy_to_user((void *)app_out_address, (void *)virt_address, | |
2521 | num_bytes); | |
2522 | ||
2523 | end_function: | |
2524 | ||
2525 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2526 | "SEP Driver:<-------- sep_read_from_data_pool_handler end\n"); | |
2527 | ||
2528 | return error; | |
2529 | } | |
2530 | ||
2531 | ||
2532 | /* | |
2533 | this function handles tha request for creation of the DMA table | |
2534 | for the synchronic symmetric operations (AES,DES) | |
2535 | */ | |
2536 | static int sep_create_sync_dma_tables_handler(unsigned long arg) | |
2537 | { | |
2538 | /* error */ | |
2539 | int error; | |
2540 | ||
2541 | /* command arguments */ | |
2542 | struct sep_driver_build_sync_table_t command_args; | |
2543 | ||
2544 | /*------------------------ | |
2545 | CODE | |
2546 | --------------------------*/ | |
2547 | ||
2548 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2549 | "SEP Driver:--------> sep_create_sync_dma_tables_handler start\n"); | |
2550 | ||
2551 | error = copy_from_user(&command_args, | |
2552 | (void *)arg, | |
2553 | sizeof(struct sep_driver_build_sync_table_t)); | |
2554 | if (error) | |
2555 | goto end_function; | |
2556 | ||
2557 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2558 | "app_in_address is %08lx\n", | |
2559 | command_args.app_in_address); | |
2560 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2561 | "app_out_address is %08lx\n", | |
2562 | command_args.app_out_address); | |
2563 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2564 | "data_size is %lu\n", | |
2565 | command_args.data_in_size); | |
2566 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
2567 | "block_size is %lu\n", | |
2568 | command_args.block_size); | |
2569 | ||
2570 | ||
2571 | /* check if we need to build only input table or input/output */ | |
2572 | if (command_args.app_out_address) | |
2573 | /* prepare input and output tables */ | |
2574 | error = sep_prepare_input_output_dma_table(command_args.app_in_address, | |
2575 | command_args.app_out_address, | |
2576 | command_args.data_in_size, | |
2577 | command_args.block_size, | |
2578 | &command_args.in_table_address, | |
2579 | &command_args.out_table_address, | |
2580 | &command_args.in_table_num_entries, | |
2581 | &command_args.out_table_num_entries, | |
2582 | &command_args.table_data_size, | |
2583 | command_args.isKernelVirtualAddress); | |
2584 | else | |
2585 | /* prepare input tables */ | |
2586 | error = sep_prepare_input_dma_table(command_args.app_in_address, | |
2587 | command_args.data_in_size, | |
2588 | command_args.block_size, | |
2589 | &command_args.in_table_address, | |
2590 | &command_args.in_table_num_entries, | |
2591 | &command_args.table_data_size, | |
2592 | command_args.isKernelVirtualAddress); | |
2593 | ||
2594 | if (error) | |
2595 | goto end_function; | |
2596 | ||
2597 | /* copy to user */ | |
2598 | error = copy_to_user((void *)arg, | |
2599 | (void *)&command_args, | |
2600 | sizeof(struct sep_driver_build_sync_table_t)); | |
2601 | ||
2602 | end_function: | |
2603 | ||
2604 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2605 | "SEP Driver:<-------- sep_create_sync_dma_tables_handler end\n"); | |
2606 | ||
2607 | return error; | |
2608 | } | |
2609 | ||
2610 | /* | |
2611 | this function handles the request for freeing dma table for synhronic actions | |
2612 | */ | |
2613 | int sep_free_dma_table_data_handler() | |
2614 | { | |
2615 | /*------------------------- | |
2616 | CODE | |
2617 | -----------------------------*/ | |
2618 | ||
2619 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2620 | "SEP Driver:--------> sep_free_dma_table_data_handler start\n"); | |
2621 | ||
2622 | /* free input pages array */ | |
2623 | sep_free_dma_pages(sep_in_page_array, | |
2624 | sep_in_num_pages, | |
2625 | 0); | |
2626 | ||
2627 | /* free output pages array if needed */ | |
2628 | if (sep_out_page_array) | |
2629 | sep_free_dma_pages(sep_out_page_array, | |
2630 | sep_out_num_pages, | |
2631 | 1); | |
2632 | ||
2633 | /* reset all the values */ | |
2634 | sep_in_page_array = 0; | |
2635 | sep_out_page_array = 0; | |
2636 | sep_in_num_pages = 0; | |
2637 | sep_out_num_pages = 0; | |
2638 | ||
2639 | ||
2640 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2641 | "SEP Driver:<-------- sep_free_dma_table_data_handler end\n"); | |
2642 | ||
2643 | return 0; | |
2644 | } | |
2645 | ||
2646 | /* | |
2647 | this function handles the request to create the DMA tables for flow | |
2648 | */ | |
2649 | static int sep_create_flow_dma_tables_handler(unsigned long arg) | |
2650 | { | |
2651 | /* error */ | |
2652 | int error; | |
2653 | ||
2654 | /* command arguments */ | |
2655 | struct sep_driver_build_flow_table_t command_args; | |
2656 | ||
2657 | /* first table - output */ | |
2658 | struct sep_lli_entry_t first_table_data; | |
2659 | ||
2660 | /* dma table data */ | |
2661 | struct sep_lli_entry_t last_table_data; | |
2662 | ||
2663 | /* pointer to the info entry of the previuos DMA table */ | |
2664 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
2665 | ||
2666 | /* pointer to the flow data strucutre */ | |
2667 | struct sep_flow_context_t *flow_context_ptr; | |
2668 | ||
2669 | /*------------------------ | |
2670 | CODE | |
2671 | --------------------------*/ | |
2672 | ||
2673 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2674 | "SEP Driver:--------> sep_create_flow_dma_tables_handler start\n"); | |
2675 | ||
2676 | /* init variables */ | |
2677 | prev_info_entry_ptr = 0; | |
2678 | first_table_data.physical_address = 0xffffffff; | |
2679 | ||
2680 | /* find the free structure for flow data */ | |
2681 | error = sep_find_flow_context(SEP_FREE_FLOW_ID, &flow_context_ptr); | |
2682 | if (error) | |
2683 | goto end_function; | |
2684 | ||
2685 | error = copy_from_user(&command_args, | |
2686 | (void *)arg, | |
2687 | sizeof(struct sep_driver_build_flow_table_t)); | |
2688 | if (error) | |
2689 | goto end_function; | |
2690 | ||
2691 | /* create flow tables */ | |
2692 | error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, | |
2693 | command_args.virt_buff_data_addr, | |
2694 | flow_context_ptr, | |
2695 | &first_table_data, | |
2696 | &last_table_data, | |
2697 | command_args.isKernelVirtualAddress); | |
2698 | if (error) | |
2699 | goto end_function_with_error; | |
2700 | ||
2701 | /* check if flow is static */ | |
2702 | if (!command_args.flow_type) | |
2703 | /* point the info entry of the last to the info entry of the first */ | |
2704 | last_table_data = first_table_data; | |
2705 | ||
2706 | /* set output params */ | |
2707 | command_args.first_table_addr = first_table_data.physical_address; | |
2708 | command_args.first_table_num_entries = | |
2709 | ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & | |
2710 | SEP_NUM_ENTRIES_MASK); | |
2711 | command_args.first_table_data_size = | |
2712 | (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
2713 | ||
2714 | /* send the parameters to user application */ | |
2715 | error = copy_to_user((void *)arg, | |
2716 | &command_args, | |
2717 | sizeof(struct sep_driver_build_flow_table_t)); | |
2718 | if (error) | |
2719 | goto end_function_with_error; | |
2720 | ||
2721 | /* all the flow created - update the flow entry with temp id */ | |
2722 | flow_context_ptr->flow_id = SEP_TEMP_FLOW_ID; | |
2723 | ||
2724 | /* set the processing tables data in the context */ | |
2725 | if (command_args.input_output_flag == SEP_DRIVER_IN_FLAG) | |
2726 | flow_context_ptr->input_tables_in_process = first_table_data; | |
2727 | else | |
2728 | flow_context_ptr->output_tables_in_process = first_table_data; | |
2729 | ||
2730 | goto end_function; | |
2731 | ||
2732 | end_function_with_error: | |
2733 | ||
2734 | /* free the allocated tables */ | |
2735 | sep_deallocated_flow_tables(&first_table_data); | |
2736 | ||
2737 | end_function: | |
2738 | ||
2739 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2740 | "SEP Driver:<-------- sep_create_flow_dma_tables_handler end\n"); | |
2741 | ||
2742 | return error; | |
2743 | ||
2744 | } | |
2745 | ||
2746 | /* | |
2747 | this functio n handles add tables to flow | |
2748 | */ | |
2749 | static int sep_add_flow_tables_handler(unsigned long arg) | |
2750 | { | |
2751 | /* error */ | |
2752 | int error; | |
2753 | ||
2754 | /* number of entries */ | |
2755 | unsigned long num_entries; | |
2756 | ||
2757 | /* command arguments */ | |
2758 | struct sep_driver_add_flow_table_t command_args; | |
2759 | ||
2760 | /* pointer to the flow data strucutre */ | |
2761 | struct sep_flow_context_t *flow_context_ptr; | |
2762 | ||
2763 | /* first dma table data */ | |
2764 | struct sep_lli_entry_t first_table_data; | |
2765 | ||
2766 | /* last dma table data */ | |
2767 | struct sep_lli_entry_t last_table_data; | |
2768 | ||
2769 | /* pointer to the info entry of the current DMA table */ | |
2770 | struct sep_lli_entry_t *info_entry_ptr; | |
2771 | ||
2772 | /*-------------------------- | |
2773 | CODE | |
2774 | ----------------------------*/ | |
2775 | ||
2776 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2777 | "SEP Driver:--------> sep_add_flow_tables_handler start\n"); | |
2778 | ||
2779 | /* get input parameters */ | |
2780 | error = copy_from_user(&command_args, | |
2781 | (void *)arg, | |
2782 | sizeof(struct sep_driver_add_flow_table_t)); | |
2783 | if (error) | |
2784 | goto end_function; | |
2785 | ||
2786 | /* find the flow structure for the flow id */ | |
2787 | error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); | |
2788 | if (error) | |
2789 | goto end_function; | |
2790 | ||
2791 | /* prepare the flow dma tables */ | |
2792 | error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, | |
2793 | command_args.virt_buff_data_addr, | |
2794 | flow_context_ptr, | |
2795 | &first_table_data, | |
2796 | &last_table_data, | |
2797 | command_args.isKernelVirtualAddress); | |
2798 | if (error) | |
2799 | goto end_function_with_error; | |
2800 | ||
2801 | /* now check if there is already an existing add table for this flow */ | |
2802 | if (command_args.inputOutputFlag == SEP_DRIVER_IN_FLAG) { | |
2803 | /* this buffer was for input buffers */ | |
2804 | if (flow_context_ptr->input_tables_flag) { | |
2805 | /* add table already exists - add the new tables to the end | |
2806 | of the previous */ | |
2807 | num_entries = (flow_context_ptr->last_input_table.block_size >> | |
2808 | SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
2809 | ||
2810 | info_entry_ptr = | |
2811 | (struct sep_lli_entry_t *) | |
2812 | (flow_context_ptr->last_input_table.physical_address + | |
2813 | (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
2814 | ||
2815 | /* connect to list of tables */ | |
2816 | *info_entry_ptr = first_table_data; | |
2817 | ||
2818 | /* set the first table data */ | |
2819 | first_table_data = flow_context_ptr->first_input_table; | |
2820 | } else { | |
2821 | /* set the input flag */ | |
2822 | flow_context_ptr->input_tables_flag = 1; | |
2823 | ||
2824 | /* set the first table data */ | |
2825 | flow_context_ptr->first_input_table = first_table_data; | |
2826 | } | |
2827 | /* set the last table data */ | |
2828 | flow_context_ptr->last_input_table = last_table_data; | |
2829 | } else /* this is output tables */ { | |
2830 | /* this buffer was for input buffers */ | |
2831 | if (flow_context_ptr->output_tables_flag) { | |
2832 | /* add table already exists - add the new tables to | |
2833 | the end of the previous */ | |
2834 | num_entries = (flow_context_ptr->last_output_table.block_size >> | |
2835 | SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
2836 | ||
2837 | info_entry_ptr = | |
2838 | (struct sep_lli_entry_t *) | |
2839 | (flow_context_ptr->last_output_table.physical_address + | |
2840 | (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
2841 | ||
2842 | /* connect to list of tables */ | |
2843 | *info_entry_ptr = first_table_data; | |
2844 | ||
2845 | /* set the first table data */ | |
2846 | first_table_data = flow_context_ptr->first_output_table; | |
2847 | } else { | |
2848 | /* set the input flag */ | |
2849 | flow_context_ptr->output_tables_flag = 1; | |
2850 | ||
2851 | /* set the first table data */ | |
2852 | flow_context_ptr->first_output_table = first_table_data; | |
2853 | } | |
2854 | /* set the last table data */ | |
2855 | flow_context_ptr->last_output_table = last_table_data; | |
2856 | } | |
2857 | ||
2858 | /* set output params */ | |
2859 | command_args.first_table_addr = first_table_data.physical_address; | |
2860 | command_args.first_table_num_entries = ((first_table_data.block_size >> | |
2861 | SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
2862 | command_args.first_table_data_size = | |
2863 | (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
2864 | ||
2865 | /* send the parameters to user application */ | |
2866 | error = copy_to_user((void *)arg, | |
2867 | &command_args, | |
2868 | sizeof(struct sep_driver_add_flow_table_t)); | |
2869 | if (error) | |
2870 | goto end_function_with_error; | |
2871 | ||
2872 | end_function_with_error: | |
2873 | ||
2874 | /* free the allocated tables */ | |
2875 | sep_deallocated_flow_tables(&first_table_data); | |
2876 | ||
2877 | end_function: | |
2878 | ||
2879 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2880 | "SEP Driver:<-------- sep_add_flow_tables_handler end\n"); | |
2881 | ||
2882 | return error; | |
2883 | } | |
2884 | ||
2885 | /* | |
2886 | this function add the flow add message to the specific flow | |
2887 | */ | |
2888 | static int sep_add_flow_tables_message_handler(unsigned long arg) | |
2889 | { | |
2890 | /* error */ | |
2891 | int error; | |
2892 | ||
2893 | /* arguments */ | |
2894 | struct sep_driver_add_message_t command_args; | |
2895 | ||
2896 | /* flow context */ | |
2897 | struct sep_flow_context_t *flow_context_ptr; | |
2898 | ||
2899 | /*---------------------------- | |
2900 | CODE | |
2901 | ------------------------------*/ | |
2902 | ||
2903 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2904 | "SEP Driver:--------> sep_add_flow_tables_message_handler start\n"); | |
2905 | ||
2906 | error = copy_from_user(&command_args, | |
2907 | (void *)arg, | |
2908 | sizeof(struct sep_driver_add_message_t)); | |
2909 | if (error) | |
2910 | goto end_function; | |
2911 | ||
2912 | /* check input */ | |
2913 | if (command_args.message_size_in_bytes > | |
2914 | SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES) { | |
2915 | error = -ENOMEM; | |
2916 | goto end_function; | |
2917 | } | |
2918 | ||
2919 | /* find the flow context */ | |
2920 | error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); | |
2921 | if (error) | |
2922 | goto end_function; | |
2923 | ||
2924 | /* copy the message into context */ | |
2925 | flow_context_ptr->message_size_in_bytes = command_args.message_size_in_bytes; | |
2926 | ||
2927 | error = copy_from_user(flow_context_ptr->message, | |
2928 | (void *)command_args.message_address, | |
2929 | command_args.message_size_in_bytes); | |
2930 | ||
2931 | ||
2932 | end_function: | |
2933 | ||
2934 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2935 | "SEP Driver:<-------- sep_add_flow_tables_message_handler end\n"); | |
2936 | ||
2937 | return error; | |
2938 | } | |
2939 | ||
2940 | ||
2941 | /* | |
2942 | this function returns the physical and virtual addresses of the static pool | |
2943 | */ | |
2944 | static int sep_get_static_pool_addr_handler(unsigned long arg) | |
2945 | { | |
2946 | /* error */ | |
2947 | int error; | |
2948 | ||
2949 | /* command arguments */ | |
2950 | struct sep_driver_static_pool_addr_t command_args; | |
2951 | ||
2952 | /*----------------------------- | |
2953 | CODE | |
2954 | ------------------------------*/ | |
2955 | ||
2956 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2957 | "SEP Driver:--------> sep_get_static_pool_addr_handler start\n"); | |
2958 | ||
2959 | /*prepare the output parameters in the struct */ | |
2960 | command_args.physical_static_address = g_sep_phys_shared_area_addr + | |
2961 | SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
2962 | command_args.virtual_static_address = g_sep_shared_area_addr + | |
2963 | SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
2964 | ||
2965 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
2966 | "SEP Driver:physical_static_address is %08lx, virtual_static_address %08lx\n", | |
2967 | command_args.physical_static_address, | |
2968 | command_args.virtual_static_address); | |
2969 | ||
2970 | /* send the parameters to user application */ | |
2971 | error = copy_to_user((void *)arg, | |
2972 | &command_args, | |
2973 | sizeof(struct sep_driver_static_pool_addr_t)); | |
2974 | if (error) | |
2975 | goto end_function; | |
2976 | ||
2977 | end_function: | |
2978 | ||
2979 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
2980 | "SEP Driver:<-------- sep_get_static_pool_addr_handler end\n"); | |
2981 | ||
2982 | return error; | |
2983 | } | |
2984 | ||
2985 | /* | |
2986 | this address gets the offset of the physical address from the start | |
2987 | of the mapped area | |
2988 | */ | |
2989 | static int sep_get_physical_mapped_offset_handler(unsigned long arg) | |
2990 | { | |
2991 | /* error */ | |
2992 | int error; | |
2993 | ||
2994 | /* command arguments */ | |
2995 | struct sep_driver_get_mapped_offset_t command_args; | |
2996 | ||
2997 | /*----------------------------- | |
2998 | CODE | |
2999 | ------------------------------*/ | |
3000 | ||
3001 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3002 | "SEP Driver:--------> sep_get_physical_mapped_offset_handler start\n"); | |
3003 | ||
3004 | error = copy_from_user(&command_args, | |
3005 | (void *)arg, | |
3006 | sizeof(struct sep_driver_get_mapped_offset_t)); | |
3007 | if (error) | |
3008 | goto end_function; | |
3009 | ||
3010 | if (command_args.physical_address < g_sep_phys_shared_area_addr) { | |
3011 | error = -ENOTTY; | |
3012 | goto end_function; | |
3013 | } | |
3014 | ||
3015 | /*prepare the output parameters in the struct */ | |
3016 | command_args.offset = command_args.physical_address - | |
3017 | g_sep_phys_shared_area_addr; | |
3018 | ||
3019 | DEBUG_PRINT_2(SEP_DEBUG_LEVEL_EXTENDED, | |
3020 | "SEP Driver:physical_address is %08lx, offset is %lu\n", | |
3021 | command_args.physical_address, | |
3022 | command_args.offset); | |
3023 | ||
3024 | /* send the parameters to user application */ | |
3025 | error = copy_to_user((void *)arg, | |
3026 | &command_args, | |
3027 | sizeof(struct sep_driver_get_mapped_offset_t)); | |
3028 | if (error) | |
3029 | goto end_function; | |
3030 | ||
3031 | end_function: | |
3032 | ||
3033 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3034 | "SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n"); | |
3035 | ||
3036 | return error; | |
3037 | } | |
3038 | ||
3039 | ||
3040 | /* | |
3041 | ? | |
3042 | */ | |
3043 | static int sep_start_handler(void) | |
3044 | { | |
3045 | /* reg val */ | |
3046 | unsigned long reg_val; | |
3047 | ||
3048 | /* error */ | |
3049 | unsigned long error; | |
3050 | ||
3051 | /*----------------------------- | |
3052 | CODE | |
3053 | ------------------------------*/ | |
3054 | ||
3055 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3056 | "SEP Driver:--------> sep_start_handler start\n"); | |
3057 | ||
3058 | error = 0; | |
3059 | ||
3060 | /* wait in polling for message from SEP */ | |
3061 | do { | |
3062 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3063 | HW_HOST_SEP_HOST_GPR3_REG_ADDR, reg_val); | |
3064 | } while (!reg_val); | |
3065 | ||
3066 | /* check the value */ | |
3067 | if (reg_val == 0x1) { | |
3068 | /* fatal error - read erro status from GPRO */ | |
3069 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3070 | HW_HOST_SEP_HOST_GPR0_REG_ADDR, error); | |
3071 | goto end_function; | |
3072 | } | |
3073 | ||
3074 | end_function: | |
3075 | ||
3076 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3077 | "SEP Driver:<-------- sep_start_handler end\n"); | |
3078 | ||
3079 | return error; | |
3080 | } | |
3081 | ||
3082 | /* | |
3083 | this function handles the request for SEP initialization | |
3084 | */ | |
3085 | static int sep_init_handler(unsigned long arg) | |
3086 | { | |
3087 | /* word from message */ | |
3088 | unsigned long message_word; | |
3089 | ||
3090 | /* message ptr */ | |
3091 | unsigned long *message_ptr; | |
3092 | ||
3093 | /* command arguments */ | |
3094 | struct sep_driver_init_t command_args; | |
3095 | ||
3096 | /* counter */ | |
3097 | unsigned long counter; | |
3098 | ||
3099 | /* error */ | |
3100 | unsigned long error; | |
3101 | ||
3102 | /* reg val */ | |
3103 | unsigned long reg_val; | |
3104 | ||
3105 | /*------------------- | |
3106 | CODE | |
3107 | ---------------------*/ | |
3108 | ||
3109 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3110 | "SEP Driver:--------> sep_init_handler start\n"); | |
3111 | ||
3112 | error = 0; | |
3113 | ||
3114 | error = copy_from_user(&command_args, (void *)arg, | |
3115 | sizeof(struct sep_driver_init_t)); | |
3116 | ||
3117 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3118 | "SEP Driver:--------> sep_init_handler - finished copy_from_user \n"); | |
3119 | ||
3120 | if (error) | |
3121 | goto end_function; | |
3122 | ||
3123 | /* PATCH - configure the DMA to single -burst instead of multi-burst */ | |
3124 | /*sep_configure_dma_burst();*/ | |
3125 | ||
3126 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3127 | "SEP Driver:--------> sep_init_handler - finished sep_configure_dma_burst \n"); | |
3128 | ||
3129 | message_ptr = (unsigned long *)command_args.message_addr; | |
3130 | ||
3131 | /* set the base address of the SRAM */ | |
3132 | SEP_WRITE_REGISTER(g_sep_reg_base_address + | |
3133 | HW_SRAM_ADDR_REG_ADDR, | |
3134 | HW_CC_SRAM_BASE_ADDRESS); | |
3135 | ||
3136 | for (counter = 0 ; | |
3137 | counter < command_args.message_size_in_words; | |
3138 | counter++, message_ptr++) { | |
3139 | get_user(message_word, message_ptr); | |
3140 | ||
3141 | /* write data to SRAM */ | |
3142 | SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_SRAM_DATA_REG_ADDR, | |
3143 | message_word); | |
3144 | ||
3145 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3146 | "SEP Driver:message_word is %lu\n", | |
3147 | message_word); | |
3148 | ||
3149 | /* wait for write complete */ | |
3150 | SEP_WAIT_SRAM_WRITE_COMPLETE(); | |
3151 | } | |
3152 | ||
3153 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3154 | "SEP Driver:--------> sep_init_handler - finished getting messages from user space\n"); | |
3155 | ||
3156 | /* signal SEP */ | |
3157 | SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_HOST_SEP_GPR0_REG_ADDR, | |
3158 | 0x1); | |
3159 | ||
3160 | do { | |
3161 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3162 | HW_HOST_SEP_HOST_GPR3_REG_ADDR, reg_val); | |
3163 | } while (!(reg_val & 0xFFFFFFFD)); | |
3164 | ||
3165 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3166 | "SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n"); | |
3167 | ||
3168 | /* check the value */ | |
3169 | if (reg_val == 0x1) { | |
3170 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_EXTENDED, | |
3171 | "SEP Driver:init failed\n"); | |
3172 | ||
3173 | SEP_READ_REGISTER(g_sep_reg_base_address + 0x8060, error); | |
3174 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3175 | "SEP Driver:sw monitor is %lu\n", | |
3176 | error); | |
3177 | ||
3178 | /* fatal error - read erro status from GPRO */ | |
3179 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3180 | HW_HOST_SEP_HOST_GPR0_REG_ADDR, | |
3181 | error); | |
3182 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3183 | "SEP Driver:error is %lu\n", error); | |
3184 | goto end_function; | |
3185 | } | |
3186 | ||
3187 | end_function: | |
3188 | ||
3189 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3190 | "SEP Driver:<-------- sep_init_handler end\n"); | |
3191 | ||
3192 | return error; | |
3193 | ||
3194 | } | |
3195 | ||
3196 | /* | |
3197 | this function handles the request cache and resident reallocation | |
3198 | */ | |
3199 | static int sep_realloc_cache_resident_handler(unsigned long arg) | |
3200 | { | |
3201 | /* error */ | |
3202 | int error; | |
3203 | ||
3204 | /* physical cache addr */ | |
3205 | unsigned long phys_cache_address; | |
3206 | ||
3207 | /* physical resident addr */ | |
3208 | unsigned long phys_resident_address; | |
3209 | ||
3210 | /* command arguments */ | |
3211 | struct sep_driver_realloc_cache_resident_t command_args; | |
3212 | ||
3213 | /*------------------ | |
3214 | CODE | |
3215 | ---------------------*/ | |
3216 | ||
3217 | /* copy the data */ | |
3218 | error = copy_from_user(&command_args, | |
3219 | (void *)arg, | |
3220 | sizeof(struct sep_driver_realloc_cache_resident_t)); | |
3221 | if (error) | |
3222 | goto end_function; | |
3223 | ||
3224 | /* copy cache and resident to the their intended locations */ | |
3225 | error = sep_copy_cache_resident_to_area(command_args.cache_addr, | |
3226 | command_args.cache_size_in_bytes, | |
3227 | command_args.resident_addr, | |
3228 | command_args.resident_size_in_bytes, | |
3229 | &phys_cache_address, | |
3230 | &phys_resident_address); | |
3231 | if (error) | |
3232 | goto end_function; | |
3233 | ||
3234 | /* lock the area (if needed) */ | |
3235 | sep_lock_cache_resident_area(); | |
3236 | ||
3237 | command_args.new_base_addr = g_sep_phys_shared_area_addr; | |
3238 | ||
3239 | /* find the new base address according to the lowest address between | |
3240 | cache, resident and shared area */ | |
3241 | if (phys_resident_address < command_args.new_base_addr) | |
3242 | command_args.new_base_addr = phys_resident_address; | |
3243 | if (phys_cache_address < command_args.new_base_addr) | |
3244 | command_args.new_base_addr = phys_cache_address; | |
3245 | ||
3246 | /* set the return parameters */ | |
3247 | command_args.new_cache_addr = phys_cache_address; | |
3248 | command_args.new_resident_addr = phys_resident_address; | |
3249 | ||
3250 | ||
3251 | /* set the new shared area */ | |
3252 | command_args.new_shared_area_addr = g_sep_phys_shared_area_addr; | |
3253 | ||
3254 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3255 | "SEP Driver:command_args.new_shared_area_addr is %08lx\n", | |
3256 | command_args.new_shared_area_addr); | |
3257 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3258 | "SEP Driver:command_args.new_base_addr is %08lx\n", | |
3259 | command_args.new_base_addr); | |
3260 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3261 | "SEP Driver:command_args.new_resident_addr is %08lx\n", | |
3262 | command_args.new_resident_addr); | |
3263 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3264 | "SEP Driver:command_args.new_cache_addr is %08lx\n", | |
3265 | command_args.new_cache_addr); | |
3266 | ||
3267 | /* return to user */ | |
3268 | error = copy_to_user((void *)arg, | |
3269 | (void *)&command_args, | |
3270 | sizeof(struct sep_driver_realloc_cache_resident_t)); | |
3271 | ||
3272 | end_function: | |
3273 | ||
3274 | return error; | |
3275 | } | |
3276 | ||
3277 | /* | |
3278 | this function handles the request for get time | |
3279 | */ | |
3280 | static int sep_get_time_handler(unsigned long arg) | |
3281 | { | |
3282 | /* error */ | |
3283 | int error; | |
3284 | ||
3285 | /* command arguments */ | |
3286 | struct sep_driver_get_time_t command_args; | |
3287 | ||
3288 | /*------------------------ | |
3289 | CODE | |
3290 | --------------------------*/ | |
3291 | ||
3292 | error = sep_set_time(&command_args.time_physical_address, | |
3293 | &command_args.time_value); | |
3294 | ||
3295 | /* return to user */ | |
3296 | error = copy_to_user((void *)arg, | |
3297 | (void *)&command_args, | |
3298 | sizeof(struct sep_driver_get_time_t)); | |
3299 | ||
3300 | return error; | |
3301 | ||
3302 | } | |
3303 | ||
3304 | /* | |
3305 | This api handles the setting of API mode to blocking or non-blocking | |
3306 | */ | |
3307 | static int sep_set_api_mode_handler(unsigned long arg) | |
3308 | { | |
3309 | /* error */ | |
3310 | int error; | |
3311 | ||
3312 | /* flag */ | |
3313 | unsigned long mode_flag; | |
3314 | ||
3315 | /*---------------------------- | |
3316 | CODE | |
3317 | -----------------------------*/ | |
3318 | ||
3319 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3320 | "SEP Driver:--------> sep_set_api_mode_handler start\n"); | |
3321 | ||
3322 | error = get_user( | |
3323 | mode_flag, &(((struct sep_driver_set_api_mode_t *)arg)->mode)); | |
3324 | if (error) | |
3325 | goto end_function; | |
3326 | ||
3327 | /* set the global flag */ | |
3328 | g_sep_block_mode_flag = mode_flag; | |
3329 | ||
3330 | ||
3331 | end_function: | |
3332 | ||
3333 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3334 | "SEP Driver:<-------- sep_set_api_mode_handler end\n"); | |
3335 | ||
3336 | return error; | |
3337 | } | |
3338 | ||
3339 | /* | |
3340 | This API handles the end transaction request | |
3341 | */ | |
3342 | static int sep_end_transaction_handler(unsigned long arg) | |
3343 | { | |
3344 | /*---------------------------- | |
3345 | CODE | |
3346 | -----------------------------*/ | |
3347 | ||
3348 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3349 | "SEP Driver:--------> sep_end_transaction_handler start\n"); | |
3350 | ||
3351 | #if 0/*!SEP_DRIVER_POLLING_MODE*/ | |
3352 | /* close IMR */ | |
3353 | SEP_WRITE_REGISTER(g_sep_reg_base_address + HW_HOST_IMR_REG_ADDR, 0x7FFF); | |
3354 | ||
3355 | /* release IRQ line */ | |
3356 | free_irq(SEP_DIRVER_IRQ_NUM, &g_sep_reg_base_address); | |
3357 | ||
3358 | /* lock the sep mutex */ | |
3359 | mutex_unlock(&sep_mutex); | |
3360 | #endif | |
3361 | ||
3362 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3363 | "SEP Driver:<-------- sep_end_transaction_handler end\n"); | |
3364 | ||
3365 | return 0; | |
3366 | } | |
3367 | ||
3368 | /* handler for flow done interrupt */ | |
3369 | static void sep_flow_done_handler(struct work_struct *work) | |
3370 | { | |
3371 | /* flow context_ptr */ | |
3372 | struct sep_flow_context_t *flow_data_ptr; | |
3373 | /*------------------------- | |
3374 | CODE | |
3375 | ---------------------------*/ | |
3376 | ||
3377 | /* obtain the mutex */ | |
3378 | mutex_lock(&sep_mutex); | |
3379 | ||
3380 | /* get the pointer to context */ | |
3381 | flow_data_ptr = (struct sep_flow_context_t *)work; | |
3382 | ||
3383 | /* free all the current input tables in sep */ | |
3384 | sep_deallocated_flow_tables(&flow_data_ptr->input_tables_in_process); | |
3385 | ||
3386 | /* free all the current tables output tables in SEP (if needed) */ | |
3387 | if (flow_data_ptr->output_tables_in_process.physical_address != 0xffffffff) | |
3388 | sep_deallocated_flow_tables(&flow_data_ptr->output_tables_in_process); | |
3389 | ||
3390 | /* check if we have additional tables to be sent to SEP only input | |
3391 | flag may be checked */ | |
3392 | if (flow_data_ptr->input_tables_flag) { | |
3393 | /* copy the message to the shared RAM and signal SEP */ | |
3394 | memcpy((void *)flow_data_ptr->message, | |
3395 | (void *)g_sep_shared_area_addr, | |
3396 | flow_data_ptr->message_size_in_bytes); | |
3397 | ||
3398 | SEP_WRITE_REGISTER(g_sep_reg_base_address + | |
3399 | HW_HOST_HOST_SEP_GPR2_REG_ADDR, | |
3400 | 0x2); | |
3401 | } | |
3402 | mutex_unlock(&sep_mutex); | |
3403 | } | |
3404 | ||
3405 | ||
3406 | /* | |
3407 | This function creates a list of tables for flow and returns the data for | |
3408 | the first and last tables of the list | |
3409 | */ | |
3410 | static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, | |
3411 | unsigned long first_buff_addr, | |
3412 | struct sep_flow_context_t *flow_data_ptr, | |
3413 | struct sep_lli_entry_t *first_table_data_ptr, | |
3414 | struct sep_lli_entry_t *last_table_data_ptr, | |
3415 | bool isKernelVirtualAddress) | |
3416 | { | |
3417 | /* error */ | |
3418 | int error; | |
3419 | ||
3420 | /* virtaul address of one buffer */ | |
3421 | unsigned long virt_buff_addr; | |
3422 | ||
3423 | /* virtual size of one buffer */ | |
3424 | unsigned long virt_buff_size; | |
3425 | ||
3426 | /* table data for each created table */ | |
3427 | struct sep_lli_entry_t table_data; | |
3428 | ||
3429 | /* info entry */ | |
3430 | struct sep_lli_entry_t *info_entry_ptr; | |
3431 | ||
3432 | /* prevouis info entry */ | |
3433 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
3434 | ||
3435 | /* counter */ | |
3436 | unsigned long i; | |
3437 | ||
3438 | /*------------------------------- | |
3439 | CODE | |
3440 | ----------------------------------*/ | |
3441 | ||
3442 | /* init vars */ | |
3443 | error = 0; | |
3444 | prev_info_entry_ptr = 0; | |
3445 | ||
3446 | /* init the first table to default */ | |
3447 | table_data.physical_address = 0xffffffff; | |
3448 | first_table_data_ptr->physical_address = 0xffffffff; | |
3449 | table_data.block_size = 0; | |
3450 | ||
3451 | for (i = 0; i < num_virtual_buffers; i++) { | |
3452 | /* get the virtual buffer address */ | |
3453 | error = get_user(virt_buff_addr, &first_buff_addr); | |
3454 | if (error) | |
3455 | goto end_function; | |
3456 | ||
3457 | /* get the virtual buffer size */ | |
3458 | first_buff_addr++; | |
3459 | error = get_user(virt_buff_size, &first_buff_addr); | |
3460 | if (error) | |
3461 | goto end_function; | |
3462 | ||
3463 | /* advance the address to point to the next pair of address|size */ | |
3464 | first_buff_addr++; | |
3465 | ||
3466 | /* now prepare the one flow LLI table from the data */ | |
3467 | error = sep_prepare_one_flow_dma_table(virt_buff_addr, | |
3468 | virt_buff_size, | |
3469 | &table_data, | |
3470 | &info_entry_ptr, | |
3471 | flow_data_ptr, | |
3472 | isKernelVirtualAddress); | |
3473 | if (error) | |
3474 | goto end_function; | |
3475 | ||
3476 | if (i == 0) { | |
3477 | /* if this is the first table - save it to return to the user | |
3478 | application */ | |
3479 | *first_table_data_ptr = table_data; | |
3480 | ||
3481 | /* set the pointer to info entry */ | |
3482 | prev_info_entry_ptr = info_entry_ptr; | |
3483 | } else { | |
3484 | /* not first table - the previous table info entry should | |
3485 | be updated */ | |
3486 | prev_info_entry_ptr->block_size = | |
3487 | (0x1 << SEP_INT_FLAG_OFFSET_IN_BITS) | | |
3488 | (table_data.block_size); | |
3489 | ||
3490 | /* set the pointer to info entry */ | |
3491 | prev_info_entry_ptr = info_entry_ptr; | |
3492 | } | |
3493 | } | |
3494 | ||
3495 | /* set the last table data */ | |
3496 | *last_table_data_ptr = table_data; | |
3497 | ||
3498 | end_function: | |
3499 | ||
3500 | return error; | |
3501 | } | |
3502 | ||
3503 | ||
3504 | /* | |
3505 | This function creates one DMA table for flow and returns its data, | |
3506 | and pointer to its info entry | |
3507 | */ | |
3508 | static int sep_prepare_one_flow_dma_table( | |
3509 | unsigned long virt_buff_addr, | |
3510 | unsigned long virt_buff_size, | |
3511 | struct sep_lli_entry_t *table_data, | |
3512 | struct sep_lli_entry_t **info_entry_ptr, | |
3513 | struct sep_flow_context_t *flow_data_ptr, | |
3514 | bool isKernelVirtualAddress) | |
3515 | { | |
3516 | /* error */ | |
3517 | int error; | |
3518 | ||
3519 | /* the range in pages */ | |
3520 | unsigned long lli_array_size; | |
3521 | ||
3522 | /* array of pointers ot page */ | |
3523 | struct sep_lli_entry_t *lli_array; | |
3524 | ||
3525 | /* pointer to the entry in the dma table */ | |
3526 | struct sep_lli_entry_t *flow_dma_table_entry_ptr; | |
3527 | ||
3528 | /* address of the dma table */ | |
3529 | unsigned long *start_dma_table_ptr; | |
3530 | ||
3531 | /* total table data counter */ | |
3532 | unsigned long dma_table_data_count; | |
3533 | ||
3534 | /* pointer that will keep the pointer t the pages of the virtual buffer */ | |
3535 | struct page **page_array_ptr; | |
3536 | ||
3537 | /* counter */ | |
3538 | unsigned long entry_count; | |
3539 | ||
3540 | /*------------------------------- | |
3541 | CODE | |
3542 | ----------------------------------*/ | |
3543 | ||
3544 | /* find the space for the new table */ | |
3545 | error = sep_find_free_flow_dma_table_space(&start_dma_table_ptr); | |
3546 | if (error) | |
3547 | goto end_function; | |
3548 | ||
3549 | /* check if the pages are in Kernel Virtual Address layout */ | |
3550 | if (isKernelVirtualAddress == true) | |
3551 | /* lock kernel buffer in the memory */ | |
3552 | error = sep_lock_kernel_pages(virt_buff_addr, | |
3553 | virt_buff_size, | |
3554 | &lli_array_size, | |
3555 | &lli_array, | |
3556 | &page_array_ptr); | |
3557 | else | |
3558 | /* lock user buffer in the memory */ | |
3559 | error = sep_lock_user_pages(virt_buff_addr, | |
3560 | virt_buff_size, | |
3561 | &lli_array_size, | |
3562 | &lli_array, | |
3563 | &page_array_ptr); | |
3564 | ||
3565 | if (error) | |
3566 | goto end_function; | |
3567 | ||
3568 | /* set the pointer to page array at the beginning of table - this table is | |
3569 | now considered taken */ | |
3570 | *start_dma_table_ptr = lli_array_size; | |
3571 | ||
3572 | /* point to the place of the pages pointers of the table */ | |
3573 | start_dma_table_ptr++; | |
3574 | ||
3575 | /* set the pages pointer */ | |
3576 | *start_dma_table_ptr = (unsigned long)page_array_ptr; | |
3577 | ||
3578 | /* set the pointer to the first entry */ | |
3579 | flow_dma_table_entry_ptr = (struct sep_lli_entry_t *)(++start_dma_table_ptr); | |
3580 | ||
3581 | /* now create the entries for table */ | |
3582 | for (dma_table_data_count = entry_count = 0; | |
3583 | entry_count < lli_array_size; | |
3584 | entry_count++) { | |
3585 | flow_dma_table_entry_ptr->physical_address = | |
3586 | lli_array[entry_count].physical_address; | |
3587 | ||
3588 | flow_dma_table_entry_ptr->block_size = | |
3589 | lli_array[entry_count].block_size; | |
3590 | ||
3591 | /* set the total data of a table */ | |
3592 | dma_table_data_count += lli_array[entry_count].block_size; | |
3593 | ||
3594 | flow_dma_table_entry_ptr++; | |
3595 | } | |
3596 | ||
3597 | /* set the physical address */ | |
3598 | table_data->physical_address = virt_to_phys(start_dma_table_ptr); | |
3599 | ||
3600 | /* set the num_entries and total data size */ | |
3601 | table_data->block_size = ((lli_array_size + 1) << | |
3602 | SEP_NUM_ENTRIES_OFFSET_IN_BITS) | | |
3603 | (dma_table_data_count); | |
3604 | ||
3605 | /* set the info entry */ | |
3606 | flow_dma_table_entry_ptr->physical_address = 0xffffffff; | |
3607 | flow_dma_table_entry_ptr->block_size = 0; | |
3608 | ||
3609 | /* set the pointer to info entry */ | |
3610 | *info_entry_ptr = flow_dma_table_entry_ptr; | |
3611 | ||
3612 | /* the array of the lli entries */ | |
3613 | kfree(lli_array); | |
3614 | ||
3615 | end_function: | |
3616 | ||
3617 | return error; | |
3618 | } | |
3619 | ||
3620 | ||
3621 | /* | |
3622 | This function returns pointer to the flow data structure | |
3623 | that conatins the given id | |
3624 | */ | |
3625 | static int sep_find_flow_context( | |
3626 | unsigned long flow_id, | |
3627 | struct sep_flow_context_t **flow_data_ptr) | |
3628 | { | |
3629 | /* count */ | |
3630 | unsigned long count; | |
3631 | ||
3632 | /* error */ | |
3633 | int error; | |
3634 | ||
3635 | /*----------------------- | |
3636 | CODE | |
3637 | ---------------------------*/ | |
3638 | ||
3639 | error = 0; | |
3640 | ||
3641 | /* | |
3642 | always search for flow with id default first - in case we | |
3643 | already started working on the flow there can be no situation | |
3644 | when 2 flows are with default flag | |
3645 | */ | |
3646 | for (count = 0; count < SEP_DRIVER_NUM_FLOWS; count++) { | |
3647 | if (g_sep_flows_data_array[count].flow_id == flow_id) { | |
3648 | *flow_data_ptr = &g_sep_flows_data_array[count]; | |
3649 | break; | |
3650 | } | |
3651 | } | |
3652 | ||
3653 | if (count == SEP_DRIVER_NUM_FLOWS) | |
3654 | /* no flow found */ | |
3655 | error = -ENOMEM; | |
3656 | ||
3657 | return error; | |
3658 | } | |
3659 | ||
3660 | /* | |
3661 | this function find a space for the new flow dma table | |
3662 | */ | |
3663 | static int sep_find_free_flow_dma_table_space( | |
3664 | unsigned long **table_address_ptr) | |
3665 | { | |
3666 | /* error */ | |
3667 | int error; | |
3668 | ||
3669 | /* pointer to the id field of the flow dma table */ | |
3670 | unsigned long *start_table_ptr; | |
3671 | ||
3672 | /* start address of the flow dma area */ | |
3673 | unsigned long flow_dma_area_start_addr; | |
3674 | ||
3675 | /* end address of the flow dma area */ | |
3676 | unsigned long flow_dma_area_end_addr; | |
3677 | ||
3678 | /* maximum table size in words */ | |
3679 | unsigned long table_size_in_words; | |
3680 | ||
3681 | /*--------------------- | |
3682 | CODE | |
3683 | -----------------------*/ | |
3684 | ||
3685 | error = 0; | |
3686 | ||
3687 | /* find the start address of the flow DMA table area */ | |
3688 | flow_dma_area_start_addr = g_sep_shared_area_addr + | |
3689 | SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
3690 | ||
3691 | /* set end address of the flow table area */ | |
3692 | flow_dma_area_end_addr = flow_dma_area_start_addr + | |
3693 | SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES; | |
3694 | ||
3695 | /* set table size in words */ | |
3696 | table_size_in_words = SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE * | |
3697 | (sizeof(struct sep_lli_entry_t) / sizeof(long)) + 2; | |
3698 | ||
3699 | /* set the pointer to the start address of DMA area */ | |
3700 | start_table_ptr = (unsigned long *)flow_dma_area_start_addr; | |
3701 | ||
3702 | /* find the space for the next table */ | |
3703 | while (((*start_table_ptr & 0x7FFFFFFF) != 0) && | |
3704 | ((unsigned long)start_table_ptr < | |
3705 | flow_dma_area_end_addr)) | |
3706 | start_table_ptr += table_size_in_words; | |
3707 | ||
3708 | /* check if we reached the end of floa tables area */ | |
3709 | if ((unsigned long)start_table_ptr >= flow_dma_area_end_addr) | |
3710 | error = -1; | |
3711 | else | |
3712 | *table_address_ptr = start_table_ptr; | |
3713 | ||
3714 | return error; | |
3715 | } | |
3716 | ||
3717 | /* | |
3718 | this function goes over all the flow tables connected to the given | |
3719 | table and deallocate them | |
3720 | */ | |
3721 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr) | |
3722 | { | |
3723 | /* id poiner */ | |
3724 | unsigned long *table_ptr; | |
3725 | ||
3726 | /* end address of the flow dma area */ | |
3727 | unsigned long num_entries; | |
3728 | ||
3729 | unsigned long num_pages; | |
3730 | ||
3731 | /* pages ptr */ | |
3732 | struct page **pages_ptr; | |
3733 | ||
3734 | /* maximum table size in words */ | |
3735 | struct sep_lli_entry_t *info_entry_ptr; | |
3736 | ||
3737 | /*------------------------------- | |
3738 | CODE | |
3739 | ---------------------------------*/ | |
3740 | ||
3741 | /* set the pointer to the first table */ | |
3742 | table_ptr = (unsigned long *)first_table_ptr->physical_address; | |
3743 | ||
3744 | /* set the num of entries */ | |
3745 | num_entries = (first_table_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) | |
3746 | & SEP_NUM_ENTRIES_MASK; | |
3747 | ||
3748 | /* go over all the connected tables */ | |
3749 | while (*table_ptr != 0xffffffff) { | |
3750 | /* get number of pages */ | |
3751 | num_pages = *(table_ptr - 2); | |
3752 | ||
3753 | /* get the pointer to the pages */ | |
3754 | pages_ptr = (struct page **)(*(table_ptr - 1)); | |
3755 | ||
3756 | /* free the pages */ | |
3757 | sep_free_dma_pages(pages_ptr, num_pages, 1); | |
3758 | ||
3759 | /* goto to the info entry */ | |
3760 | info_entry_ptr = ((struct sep_lli_entry_t *)table_ptr) + | |
3761 | (num_entries - 1); | |
3762 | ||
3763 | table_ptr = (unsigned long *)info_entry_ptr->physical_address; | |
3764 | num_entries = (info_entry_ptr->block_size >> | |
3765 | SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
3766 | } | |
3767 | ||
3768 | return; | |
3769 | } | |
3770 | ||
3771 | /* | |
3772 | This function handler the set flow id command | |
3773 | */ | |
3774 | static int sep_set_flow_id_handler(unsigned long arg) | |
3775 | { | |
3776 | /* error */ | |
3777 | int error; | |
3778 | ||
3779 | /* flow _id */ | |
3780 | unsigned long flow_id; | |
3781 | ||
3782 | /* pointer to flow data structre */ | |
3783 | struct sep_flow_context_t *flow_data_ptr; | |
3784 | ||
3785 | /*---------------------- | |
3786 | CODE | |
3787 | -----------------------*/ | |
3788 | ||
3789 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3790 | "------------>SEP Driver: sep_set_flow_id_handler start\n"); | |
3791 | ||
3792 | error = get_user(flow_id, | |
3793 | &(((struct sep_driver_set_flow_id_t *)arg)->flow_id)); | |
3794 | if (error) | |
3795 | goto end_function; | |
3796 | ||
3797 | /* find the flow data structure that was just used for creating new flow | |
3798 | - its id should be default */ | |
3799 | error = sep_find_flow_context(SEP_TEMP_FLOW_ID, &flow_data_ptr); | |
3800 | if (error) | |
3801 | goto end_function; | |
3802 | ||
3803 | /* set flow id */ | |
3804 | flow_data_ptr->flow_id = flow_id; | |
3805 | ||
3806 | end_function: | |
3807 | ||
3808 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3809 | "SEP Driver:<-------- sep_set_flow_id_handler end\n"); | |
3810 | ||
3811 | ||
3812 | return error; | |
3813 | } | |
3814 | ||
3815 | ||
3816 | /* | |
3817 | calculates time and sets it at the predefined address | |
3818 | */ | |
3819 | static int sep_set_time(unsigned long *address_ptr, | |
3820 | unsigned long *time_in_sec_ptr) | |
3821 | { | |
3822 | /* time struct */ | |
3823 | struct timeval time; | |
3824 | ||
3825 | /* address of time in the kernel */ | |
3826 | unsigned long time_addr; | |
3827 | ||
3828 | ||
3829 | /*------------------------ | |
3830 | CODE | |
3831 | --------------------------*/ | |
3832 | ||
3833 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3834 | "SEP Driver:--------> sep_set_time start\n"); | |
3835 | ||
3836 | ||
3837 | do_gettimeofday(&time); | |
3838 | ||
3839 | /* set value in the SYSTEM MEMORY offset */ | |
3840 | time_addr = g_message_shared_area_addr + | |
3841 | SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES; | |
3842 | ||
3843 | *(unsigned long *)time_addr = SEP_TIME_VAL_TOKEN; | |
3844 | *(unsigned long *)(time_addr + 4) = time.tv_sec; | |
3845 | ||
3846 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3847 | "SEP Driver:time.tv_sec is %lu\n", | |
3848 | time.tv_sec); | |
3849 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3850 | "SEP Driver:time_addr is %lu\n", | |
3851 | time_addr); | |
3852 | DEBUG_PRINT_1(SEP_DEBUG_LEVEL_EXTENDED, | |
3853 | "SEP Driver:g_message_shared_area_addr is %lu\n", | |
3854 | g_message_shared_area_addr); | |
3855 | ||
3856 | /* set the output parameters if needed */ | |
3857 | if (address_ptr) | |
3858 | *address_ptr = sep_shared_area_virt_to_phys(time_addr); | |
3859 | ||
3860 | if (time_in_sec_ptr) | |
3861 | *time_in_sec_ptr = time.tv_sec; | |
3862 | ||
3863 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3864 | "SEP Driver:<-------- sep_set_time end\n"); | |
3865 | ||
3866 | return 0; | |
3867 | } | |
3868 | ||
3869 | /* | |
3870 | PATCH for configuring the DMA to single burst instead of multi-burst | |
3871 | */ | |
3872 | static void sep_configure_dma_burst(void) | |
3873 | { | |
3874 | ||
3875 | #define HW_AHB_RD_WR_BURSTS_REG_ADDR 0x0E10UL | |
3876 | ||
3877 | unsigned long regVal; | |
3878 | ||
3879 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3880 | "SEP Driver:<-------- sep_configure_dma_burst start \n"); | |
3881 | ||
3882 | /* request access to registers from SEP */ | |
3883 | SEP_WRITE_REGISTER(g_sep_reg_base_address + | |
3884 | HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2UL); | |
3885 | ||
3886 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3887 | "SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n"); | |
3888 | ||
3889 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3890 | HW_HOST_SEP_BUSY_REG_ADDR, regVal); | |
3891 | while (regVal) | |
3892 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3893 | HW_HOST_SEP_BUSY_REG_ADDR, regVal); | |
3894 | ||
3895 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3896 | "SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (while(revVal) wait loop) \n"); | |
3897 | ||
3898 | /* set the DMA burst register to single burst*/ | |
3899 | SEP_WRITE_REGISTER(g_sep_reg_base_address + | |
3900 | HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL); | |
3901 | ||
3902 | /* release the sep busy */ | |
3903 | SEP_WRITE_REGISTER(g_sep_reg_base_address + | |
3904 | HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL); | |
3905 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3906 | HW_HOST_SEP_BUSY_REG_ADDR, regVal); | |
3907 | while (regVal != 0x0) | |
3908 | SEP_READ_REGISTER(g_sep_reg_base_address + | |
3909 | HW_HOST_SEP_BUSY_REG_ADDR, regVal); | |
3910 | ||
3911 | DEBUG_PRINT_0(SEP_DEBUG_LEVEL_BASIC, | |
3912 | "SEP Driver:<-------- sep_configure_dma_burst done \n"); | |
3913 | ||
3914 | } | |
3915 | ||
3916 | module_init(sep_init); | |
3917 | module_exit(sep_exit); | |
3918 | ||
3919 | MODULE_LICENSE("GPL"); |