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cd1bb431 MA |
1 | /* |
2 | * | |
3 | * sep_main_mod.c - Security Processor Driver main group of functions | |
4 | * | |
5 | * Copyright(c) 2009 Intel Corporation. All rights reserved. | |
6 | * Copyright(c) 2009 Discretix. All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along with | |
19 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
20 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | * | |
22 | * CONTACTS: | |
23 | * | |
24 | * Mark Allyn mark.a.allyn@intel.com | |
25 | * | |
26 | * CHANGES: | |
27 | * | |
28 | * 2009.06.26 Initial publish | |
29 | * | |
30 | */ | |
31 | ||
32 | #include <linux/init.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/fs.h> | |
35 | #include <linux/cdev.h> | |
36 | #include <linux/kdev_t.h> | |
37 | #include <linux/mutex.h> | |
38 | #include <linux/mm.h> | |
39 | #include <linux/poll.h> | |
40 | #include <linux/wait.h> | |
0097a69d AC |
41 | #include <linux/pci.h> |
42 | #include <linux/firmware.h> | |
cd1bb431 MA |
43 | #include <asm/ioctl.h> |
44 | #include <linux/ioport.h> | |
45 | #include <asm/io.h> | |
46 | #include <linux/interrupt.h> | |
47 | #include <linux/pagemap.h> | |
48 | #include <asm/cacheflush.h> | |
49 | #include "sep_driver_hw_defs.h" | |
50 | #include "sep_driver_config.h" | |
51 | #include "sep_driver_api.h" | |
52 | #include "sep_driver_ext_api.h" | |
f5e3980f | 53 | #include "sep_dev.h" |
cd1bb431 | 54 | |
0097a69d | 55 | #if SEP_DRIVER_ARM_DEBUG_MODE |
cd1bb431 | 56 | |
0097a69d AC |
57 | #define CRYS_SEP_ROM_length 0x4000 |
58 | #define CRYS_SEP_ROM_start_address 0x8000C000UL | |
59 | #define CRYS_SEP_ROM_start_address_offset 0xC000UL | |
60 | #define SEP_ROM_BANK_register 0x80008420UL | |
61 | #define SEP_ROM_BANK_register_offset 0x8420UL | |
62 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0x82000000 | |
cd1bb431 | 63 | |
0097a69d AC |
64 | /* |
65 | * THESE 2 definitions are specific to the board - must be | |
66 | * defined during integration | |
67 | */ | |
68 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0xFF0D0000 | |
69 | ||
70 | /* 2M size */ | |
71 | ||
72 | void sep_load_rom_code(void) | |
73 | { | |
74 | /* Index variables */ | |
75 | unsigned long i, k, j; | |
76 | unsigned long regVal; | |
77 | unsigned long Error; | |
78 | unsigned long warning; | |
79 | ||
80 | /* Loading ROM from SEP_ROM_image.h file */ | |
81 | k = sizeof(CRYS_SEP_ROM); | |
82 | ||
83 | edbg("SEP Driver: DX_CC_TST_SepRomLoader start\n"); | |
84 | ||
85 | edbg("SEP Driver: k is %lu\n", k); | |
86 | edbg("SEP Driver: sep_dev->reg_base_address is %p\n", sep_dev->reg_base_address); | |
87 | edbg("SEP Driver: CRYS_SEP_ROM_start_address_offset is %p\n", CRYS_SEP_ROM_start_address_offset); | |
88 | ||
89 | for (i = 0; i < 4; i++) { | |
90 | /* write bank */ | |
91 | sep_write_reg(sep_dev, SEP_ROM_BANK_register_offset, i); | |
92 | ||
93 | for (j = 0; j < CRYS_SEP_ROM_length / 4; j++) { | |
94 | sep_write_reg(sep_dev, CRYS_SEP_ROM_start_address_offset + 4 * j, CRYS_SEP_ROM[i * 0x1000 + j]); | |
95 | ||
96 | k = k - 4; | |
97 | ||
98 | if (k == 0) { | |
99 | j = CRYS_SEP_ROM_length; | |
100 | i = 4; | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
105 | /* reset the SEP */ | |
106 | sep_write_reg(sep_dev, HW_HOST_SEP_SW_RST_REG_ADDR, 0x1); | |
107 | ||
108 | /* poll for SEP ROM boot finish */ | |
109 | do { | |
110 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR); | |
111 | } while (!regVal); | |
112 | ||
113 | edbg("SEP Driver: ROM polling ended\n"); | |
114 | ||
115 | switch (regVal) { | |
116 | case 0x1: | |
117 | /* fatal error - read erro status from GPRO */ | |
118 | Error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
119 | edbg("SEP Driver: ROM polling case 1\n"); | |
120 | break; | |
121 | case 0x2: | |
122 | /* Boot First Phase ended */ | |
123 | warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
124 | edbg("SEP Driver: ROM polling case 2\n"); | |
125 | break; | |
126 | case 0x4: | |
127 | /* Cold boot ended successfully */ | |
128 | warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
129 | edbg("SEP Driver: ROM polling case 4\n"); | |
130 | Error = 0; | |
131 | break; | |
132 | case 0x8: | |
133 | /* Warmboot ended successfully */ | |
134 | warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
135 | edbg("SEP Driver: ROM polling case 8\n"); | |
136 | Error = 0; | |
137 | break; | |
138 | case 0x10: | |
139 | /* ColdWarm boot ended successfully */ | |
140 | warning = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
141 | edbg("SEP Driver: ROM polling case 16\n"); | |
142 | Error = 0; | |
143 | break; | |
144 | case 0x20: | |
145 | edbg("SEP Driver: ROM polling case 32\n"); | |
146 | break; | |
147 | } | |
148 | ||
149 | } | |
150 | ||
151 | #else | |
152 | void sep_load_rom_code(void) { } | |
153 | #endif /* SEP_DRIVER_ARM_DEBUG_MODE */ | |
cd1bb431 | 154 | |
cd1bb431 MA |
155 | |
156 | ||
0097a69d AC |
157 | /*---------------------------------------- |
158 | DEFINES | |
159 | -----------------------------------------*/ | |
160 | ||
161 | #define INT_MODULE_PARM(n, v) int n = v; module_param(n, int, 0) | |
162 | #define BASE_ADDRESS_FOR_SYSTEM 0xfffc0000 | |
163 | #define SEP_RAR_IO_MEM_REGION_SIZE 0x40000 | |
cd1bb431 MA |
164 | |
165 | /*-------------------------------------------- | |
166 | GLOBAL variables | |
167 | --------------------------------------------*/ | |
168 | ||
169 | /* debug messages level */ | |
170 | INT_MODULE_PARM(sepDebug, 0x0); | |
171 | MODULE_PARM_DESC(sepDebug, "Flag to enable SEP debug messages"); | |
172 | ||
0097a69d AC |
173 | /* Keep this a single static object for now to keep the conversion easy */ |
174 | ||
175 | static struct sep_device sep_instance; | |
176 | struct sep_device *sep_dev = &sep_instance; | |
177 | ||
178 | /* temporary */ | |
179 | unsigned long jiffies_future; | |
180 | ||
cd1bb431 MA |
181 | |
182 | /* | |
183 | mutex for the access to the internals of the sep driver | |
184 | */ | |
185 | static DEFINE_MUTEX(sep_mutex); | |
186 | ||
187 | ||
188 | /* wait queue head (event) of the driver */ | |
f5e3980f | 189 | static DECLARE_WAIT_QUEUE_HEAD(g_sep_event); |
cd1bb431 | 190 | |
cd1bb431 | 191 | |
cd1bb431 MA |
192 | |
193 | /*------------------------------------------------ | |
194 | PROTOTYPES | |
195 | ---------------------------------------------------*/ | |
196 | ||
197 | /* | |
198 | interrupt handler function | |
199 | */ | |
200 | irqreturn_t sep_inthandler(int irq, void *dev_id); | |
201 | ||
202 | /* | |
203 | this function registers the driver to the file system | |
204 | */ | |
d19cf32f | 205 | static int sep_register_driver_to_fs(void); |
cd1bb431 MA |
206 | |
207 | /* | |
208 | this function unregisters driver from fs | |
209 | */ | |
210 | static void sep_unregister_driver_from_fs(void); | |
211 | ||
212 | /* | |
213 | this function calculates the size of data that can be inserted into the lli | |
214 | table from this array the condition is that either the table is full | |
215 | (all etnries are entered), or there are no more entries in the lli array | |
216 | */ | |
d19cf32f | 217 | static unsigned long sep_calculate_lli_table_max_size(struct sep_lli_entry_t *lli_in_array_ptr, unsigned long num_array_entries); |
cd1bb431 MA |
218 | /* |
219 | this functions builds ont lli table from the lli_array according to the | |
220 | given size of data | |
221 | */ | |
d19cf32f | 222 | static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, struct sep_lli_entry_t *lli_table_ptr, unsigned long *num_processed_entries_ptr, unsigned long *num_table_entries_ptr, unsigned long table_data_size); |
cd1bb431 MA |
223 | |
224 | /* | |
225 | this function goes over the list of the print created tables and prints | |
226 | all the data | |
227 | */ | |
d19cf32f | 228 | static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, unsigned long num_table_entries, unsigned long table_data_size); |
cd1bb431 MA |
229 | |
230 | ||
231 | ||
232 | /* | |
233 | This function raises interrupt to SEPm that signals that is has a new | |
234 | command from HOST | |
235 | */ | |
236 | static void sep_send_command_handler(void); | |
237 | ||
238 | ||
239 | /* | |
240 | This function raises interrupt to SEP that signals that is has a | |
241 | new reply from HOST | |
242 | */ | |
243 | static void sep_send_reply_command_handler(void); | |
244 | ||
245 | /* | |
246 | This function handles the allocate data pool memory request | |
247 | This function returns calculates the physical address of the allocated memory | |
248 | and the offset of this area from the mapped address. Therefore, the FVOs in | |
249 | user space can calculate the exact virtual address of this allocated memory | |
250 | */ | |
251 | static int sep_allocate_data_pool_memory_handler(unsigned long arg); | |
252 | ||
253 | ||
254 | /* | |
255 | This function handles write into allocated data pool command | |
256 | */ | |
257 | static int sep_write_into_data_pool_handler(unsigned long arg); | |
258 | ||
259 | /* | |
260 | this function handles the read from data pool command | |
261 | */ | |
262 | static int sep_read_from_data_pool_handler(unsigned long arg); | |
263 | ||
264 | /* | |
265 | this function handles tha request for creation of the DMA table | |
266 | for the synchronic symmetric operations (AES,DES) | |
267 | */ | |
268 | static int sep_create_sync_dma_tables_handler(unsigned long arg); | |
269 | ||
270 | /* | |
271 | this function handles the request to create the DMA tables for flow | |
272 | */ | |
273 | static int sep_create_flow_dma_tables_handler(unsigned long arg); | |
274 | ||
275 | /* | |
276 | This API handles the end transaction request | |
277 | */ | |
278 | static int sep_end_transaction_handler(unsigned long arg); | |
279 | ||
280 | ||
281 | /* | |
282 | this function handles add tables to flow | |
283 | */ | |
284 | static int sep_add_flow_tables_handler(unsigned long arg); | |
285 | ||
286 | /* | |
287 | this function add the flow add message to the specific flow | |
288 | */ | |
289 | static int sep_add_flow_tables_message_handler(unsigned long arg); | |
290 | ||
291 | /* | |
292 | this function handles the request for SEP start | |
293 | */ | |
294 | static int sep_start_handler(void); | |
295 | ||
296 | /* | |
297 | this function handles the request for SEP initialization | |
298 | */ | |
299 | static int sep_init_handler(unsigned long arg); | |
300 | ||
301 | /* | |
302 | this function handles the request cache and resident reallocation | |
303 | */ | |
304 | static int sep_realloc_cache_resident_handler(unsigned long arg); | |
305 | ||
306 | ||
307 | /* | |
308 | This api handles the setting of API mode to blocking or non-blocking | |
309 | */ | |
310 | static int sep_set_api_mode_handler(unsigned long arg); | |
311 | ||
312 | /* handler for flow done interrupt */ | |
d19cf32f | 313 | static void sep_flow_done_handler(struct work_struct *work); |
cd1bb431 MA |
314 | |
315 | /* | |
316 | This function locks all the physical pages of the kernel virtual buffer | |
317 | and construct a basic lli array, where each entry holds the physical | |
318 | page address and the size that application data holds in this physical pages | |
319 | */ | |
d19cf32f | 320 | static int sep_lock_kernel_pages(unsigned long kernel_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr); |
cd1bb431 MA |
321 | |
322 | /* | |
323 | This function creates one DMA table for flow and returns its data, | |
324 | and pointer to its info entry | |
325 | */ | |
d19cf32f | 326 | static int sep_prepare_one_flow_dma_table(unsigned long virt_buff_addr, unsigned long virt_buff_size, struct sep_lli_entry_t *table_data, struct sep_lli_entry_t **info_entry_ptr, struct sep_flow_context_t *flow_data_ptr, bool isKernelVirtualAddress); |
cd1bb431 MA |
327 | |
328 | /* | |
329 | This function creates a list of tables for flow and returns the data for the | |
330 | first and last tables of the list | |
331 | */ | |
d19cf32f AC |
332 | static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, |
333 | unsigned long first_buff_addr, struct sep_flow_context_t *flow_data_ptr, struct sep_lli_entry_t *first_table_data_ptr, struct sep_lli_entry_t *last_table_data_ptr, bool isKernelVirtualAddress); | |
cd1bb431 MA |
334 | |
335 | /* | |
336 | this function find a space for the new flow dma table | |
337 | */ | |
d19cf32f | 338 | static int sep_find_free_flow_dma_table_space(unsigned long **table_address_ptr); |
cd1bb431 MA |
339 | |
340 | /* | |
341 | this function goes over all the flow tables connected to the given table and | |
342 | deallocate them | |
343 | */ | |
d19cf32f | 344 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr); |
cd1bb431 MA |
345 | |
346 | /* | |
347 | This function handler the set flow id command | |
348 | */ | |
349 | static int sep_set_flow_id_handler(unsigned long arg); | |
350 | ||
351 | /* | |
352 | This function returns pointer to the flow data structure | |
353 | that conatins the given id | |
354 | */ | |
d19cf32f | 355 | static int sep_find_flow_context(unsigned long flow_id, struct sep_flow_context_t **flow_data_ptr); |
cd1bb431 MA |
356 | |
357 | ||
358 | /* | |
359 | this function returns the physical and virtual addresses of the static pool | |
360 | */ | |
361 | static int sep_get_static_pool_addr_handler(unsigned long arg); | |
362 | ||
363 | /* | |
364 | this address gets the offset of the physical address from the start of | |
365 | the mapped area | |
366 | */ | |
367 | static int sep_get_physical_mapped_offset_handler(unsigned long arg); | |
368 | ||
369 | ||
370 | /* | |
371 | this function handles the request for get time | |
372 | */ | |
373 | static int sep_get_time_handler(unsigned long arg); | |
374 | ||
375 | /* | |
376 | calculates time and sets it at the predefined address | |
377 | */ | |
d19cf32f | 378 | static int sep_set_time(unsigned long *address_ptr, unsigned long *time_in_sec_ptr); |
cd1bb431 MA |
379 | |
380 | /* | |
381 | PATCH for configuring the DMA to single burst instead of multi-burst | |
382 | */ | |
383 | static void sep_configure_dma_burst(void); | |
384 | ||
385 | /* | |
386 | This function locks all the physical pages of the | |
387 | application virtual buffer and construct a basic lli | |
388 | array, where each entry holds the physical page address | |
389 | and the size that application data holds in this physical pages | |
390 | */ | |
d19cf32f | 391 | static int sep_lock_user_pages(unsigned long app_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr); |
cd1bb431 MA |
392 | |
393 | /*--------------------------------------------- | |
394 | FUNCTIONS | |
395 | -----------------------------------------------*/ | |
396 | ||
0097a69d AC |
397 | /* |
398 | This functions locks the area of the resisnd and cache sep code | |
399 | */ | |
400 | void sep_lock_cache_resident_area(void) | |
401 | { | |
402 | return; | |
403 | } | |
404 | ||
405 | /* | |
406 | This functions copies the cache and resident from their source location into | |
407 | destination memory, which is external to Linux VM and is given as | |
408 | physical address | |
409 | */ | |
410 | int sep_copy_cache_resident_to_area(unsigned long src_cache_addr, unsigned long cache_size_in_bytes, unsigned long src_resident_addr, unsigned long resident_size_in_bytes, unsigned long *dst_new_cache_addr_ptr, unsigned long *dst_new_resident_addr_ptr) | |
411 | { | |
412 | unsigned long resident_addr; | |
413 | unsigned long cache_addr; | |
414 | const struct firmware *fw; | |
415 | ||
416 | char *cache_name = "cache.image.bin"; | |
417 | char *res_name = "resident.image.bin"; | |
418 | ||
419 | /* error */ | |
420 | int error; | |
421 | ||
422 | /*-------------------------------- | |
423 | CODE | |
424 | -------------------------------------*/ | |
425 | error = 0; | |
426 | ||
427 | edbg("SEP Driver:rar_virtual is %p\n", sep_dev->rar_virtual_address); | |
428 | edbg("SEP Driver:rar_physical is %08lx\n", sep_dev->rar_physical_address); | |
429 | ||
430 | sep_dev->rar_region_addr = (unsigned long) sep_dev->rar_virtual_address; | |
431 | ||
432 | sep_dev->cache_physical_address = sep_dev->rar_physical_address; | |
433 | sep_dev->cache_virtual_address = sep_dev->rar_virtual_address; | |
434 | ||
435 | /* load cache */ | |
436 | error = request_firmware(&fw, cache_name, &sep_dev->sep_pci_dev_ptr->dev); | |
437 | if (error) { | |
438 | edbg("SEP Driver:cant request cache fw\n"); | |
439 | goto end_function; | |
440 | } | |
441 | ||
442 | edbg("SEP Driver:cache data loc is %p\n", (void *) fw->data); | |
443 | edbg("SEP Driver:cache data size is %08Zx\n", fw->size); | |
444 | ||
445 | memcpy((void *) sep_dev->cache_virtual_address, (void *) fw->data, fw->size); | |
446 | ||
447 | sep_dev->cache_size = fw->size; | |
448 | ||
449 | cache_addr = (unsigned long) sep_dev->cache_virtual_address; | |
450 | ||
451 | release_firmware(fw); | |
452 | ||
453 | sep_dev->resident_physical_address = sep_dev->cache_physical_address + sep_dev->cache_size; | |
454 | sep_dev->resident_virtual_address = sep_dev->cache_virtual_address + sep_dev->cache_size; | |
455 | ||
456 | /* load resident */ | |
457 | error = request_firmware(&fw, res_name, &sep_dev->sep_pci_dev_ptr->dev); | |
458 | if (error) { | |
459 | edbg("SEP Driver:cant request res fw\n"); | |
460 | goto end_function; | |
461 | } | |
462 | ||
463 | edbg("SEP Driver:res data loc is %p\n", (void *) fw->data); | |
464 | edbg("SEP Driver:res data size is %08Zx\n", fw->size); | |
465 | ||
466 | memcpy((void *) sep_dev->resident_virtual_address, (void *) fw->data, fw->size); | |
467 | ||
468 | sep_dev->resident_size = fw->size; | |
469 | ||
470 | release_firmware(fw); | |
471 | ||
472 | resident_addr = (unsigned long) sep_dev->resident_virtual_address; | |
473 | ||
474 | edbg("SEP Driver:resident_addr (physical )is %08lx\n", sep_dev->resident_physical_address); | |
475 | edbg("SEP Driver:cache_addr (physical) is %08lx\n", sep_dev->cache_physical_address); | |
476 | ||
477 | edbg("SEP Driver:resident_addr (logical )is %08lx\n", resident_addr); | |
478 | edbg("SEP Driver:cache_addr (logical) is %08lx\n", cache_addr); | |
479 | ||
480 | edbg("SEP Driver:resident_size is %08lx\n", sep_dev->resident_size); | |
481 | edbg("SEP Driver:cache_size is %08lx\n", sep_dev->cache_size); | |
482 | ||
483 | ||
484 | ||
485 | /* physical addresses */ | |
486 | *dst_new_cache_addr_ptr = sep_dev->cache_physical_address; | |
487 | *dst_new_resident_addr_ptr = sep_dev->resident_physical_address; | |
488 | end_function: | |
489 | return error; | |
490 | } | |
491 | ||
492 | /* | |
493 | This functions maps and allocates the | |
494 | shared area on the external RAM (device) | |
495 | The input is shared_area_size - the size of the memory to | |
496 | allocate. The outputs | |
497 | are kernel_shared_area_addr_ptr - the kerenl | |
498 | address of the mapped and allocated | |
499 | shared area, and phys_shared_area_addr_ptr | |
500 | - the physical address of the shared area | |
501 | */ | |
502 | int sep_map_and_alloc_shared_area(unsigned long shared_area_size, unsigned long *kernel_shared_area_addr_ptr, unsigned long *phys_shared_area_addr_ptr) | |
503 | { | |
504 | // shared_virtual_address = ioremap_nocache(0xda00000,shared_area_size); | |
505 | sep_dev->shared_virtual_address = kmalloc(shared_area_size, GFP_KERNEL); | |
506 | if (!sep_dev->shared_virtual_address) { | |
507 | edbg("sep_driver:shared memory kmalloc failed\n"); | |
508 | return -1; | |
509 | } | |
510 | /* FIXME */ | |
511 | sep_dev->shared_physical_address = __pa(sep_dev->shared_virtual_address); | |
512 | /* shared_physical_address = 0xda00000; */ | |
513 | *kernel_shared_area_addr_ptr = (unsigned long) sep_dev->shared_virtual_address; | |
514 | /* set the physical address of the shared area */ | |
515 | *phys_shared_area_addr_ptr = sep_dev->shared_physical_address; | |
516 | edbg("SEP Driver:shared_virtual_address is %p\n", sep_dev->shared_virtual_address); | |
517 | edbg("SEP Driver:shared_region_size is %08lx\n", shared_area_size); | |
518 | edbg("SEP Driver:shared_physical_addr is %08lx\n", *phys_shared_area_addr_ptr); | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
523 | /* | |
524 | This functions unmaps and deallocates the shared area | |
525 | on the external RAM (device) | |
526 | The input is shared_area_size - the size of the memory to deallocate,kernel_ | |
527 | shared_area_addr_ptr - the kernel address of the mapped and allocated | |
528 | shared area,phys_shared_area_addr_ptr - the physical address of | |
529 | the shared area | |
530 | */ | |
531 | void sep_unmap_and_free_shared_area(unsigned long shared_area_size, unsigned long kernel_shared_area_addr, unsigned long phys_shared_area_addr) | |
532 | { | |
533 | kfree((void *) kernel_shared_area_addr); | |
534 | } | |
535 | ||
536 | /* | |
537 | This functions returns the physical address inside shared area according | |
538 | to the virtual address. It can be either on the externa RAM device | |
539 | (ioremapped), or on the system RAM | |
540 | This implementation is for the external RAM | |
541 | */ | |
542 | unsigned long sep_shared_area_virt_to_phys(unsigned long virt_address) | |
543 | { | |
544 | edbg("SEP Driver:sh virt to phys v %08lx\n", virt_address); | |
545 | edbg("SEP Driver:sh virt to phys p %08lx\n", sep_dev->shared_physical_address + (virt_address - (unsigned long) sep_dev->shared_virtual_address)); | |
546 | ||
547 | return (unsigned long) sep_dev->shared_physical_address + (virt_address - (unsigned long) sep_dev->shared_virtual_address); | |
548 | } | |
549 | ||
550 | /* | |
551 | This functions returns the virtual address inside shared area | |
552 | according to the physical address. It can be either on the | |
553 | externa RAM device (ioremapped), or on the system RAM This implementation | |
554 | is for the external RAM | |
555 | */ | |
556 | unsigned long sep_shared_area_phys_to_virt(unsigned long phys_address) | |
557 | { | |
558 | return (unsigned long) sep_dev->shared_virtual_address + (phys_address - sep_dev->shared_physical_address); | |
559 | } | |
560 | ||
561 | ||
cd1bb431 MA |
562 | /* |
563 | this function returns the address of the message shared area | |
564 | */ | |
d19cf32f | 565 | void sep_map_shared_area(unsigned long *mappedAddr_ptr) |
cd1bb431 | 566 | { |
d19cf32f | 567 | *mappedAddr_ptr = sep_dev->shared_area_addr; |
cd1bb431 MA |
568 | } |
569 | ||
570 | /* | |
571 | this function returns the address of the message shared area | |
572 | */ | |
573 | void sep_send_msg_rdy_cmd() | |
574 | { | |
d19cf32f | 575 | sep_send_command_handler(); |
cd1bb431 MA |
576 | } |
577 | ||
578 | /* this functions frees all the resources that were allocated for the building | |
579 | of the LLI DMA tables */ | |
580 | void sep_free_dma_resources() | |
581 | { | |
d19cf32f | 582 | sep_free_dma_table_data_handler(); |
cd1bb431 MA |
583 | } |
584 | ||
585 | /* poll(suspend), until reply from sep */ | |
586 | void sep_driver_poll() | |
587 | { | |
d19cf32f | 588 | unsigned long retVal = 0; |
cd1bb431 MA |
589 | |
590 | #ifdef SEP_DRIVER_POLLING_MODE | |
591 | ||
d19cf32f AC |
592 | while (sep_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) |
593 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
cd1bb431 | 594 | |
d19cf32f | 595 | sep_dev->sep_to_host_reply_counter++; |
cd1bb431 | 596 | #else |
d19cf32f AC |
597 | /* poll, until reply from sep */ |
598 | wait_event(g_sep_event, (sep_dev->host_to_sep_send_counter == sep_dev->sep_to_host_reply_counter)); | |
cd1bb431 MA |
599 | |
600 | #endif | |
601 | } | |
602 | ||
603 | /*---------------------------------------------------------------------- | |
604 | open function of the character driver - must only lock the mutex | |
605 | must also release the memory data pool allocations | |
606 | ------------------------------------------------------------------------*/ | |
607 | static int sep_open(struct inode *inode_ptr, struct file *file_ptr) | |
608 | { | |
d19cf32f | 609 | int error; |
cd1bb431 | 610 | |
d19cf32f | 611 | dbg("SEP Driver:--------> open start\n"); |
cd1bb431 | 612 | |
d19cf32f | 613 | error = 0; |
cd1bb431 | 614 | |
d19cf32f AC |
615 | /* check the blocking mode */ |
616 | if (sep_dev->block_mode_flag) | |
617 | /* lock mutex */ | |
618 | mutex_lock(&sep_mutex); | |
619 | else | |
620 | error = mutex_trylock(&sep_mutex); | |
cd1bb431 | 621 | |
d19cf32f AC |
622 | /* check the error */ |
623 | if (error) { | |
624 | edbg("SEP Driver: down_interruptible failed\n"); | |
cd1bb431 | 625 | |
d19cf32f AC |
626 | goto end_function; |
627 | } | |
cd1bb431 | 628 | |
d19cf32f AC |
629 | /* release data pool allocations */ |
630 | sep_dev->data_pool_bytes_allocated = 0; | |
cd1bb431 | 631 | |
f93e4bf9 | 632 | end_function: |
d19cf32f | 633 | dbg("SEP Driver:<-------- open end\n"); |
d19cf32f | 634 | return error; |
cd1bb431 MA |
635 | } |
636 | ||
637 | ||
638 | ||
639 | ||
640 | /*------------------------------------------------------------ | |
641 | release function | |
642 | -------------------------------------------------------------*/ | |
643 | static int sep_release(struct inode *inode_ptr, struct file *file_ptr) | |
644 | { | |
d19cf32f | 645 | dbg("----------->SEP Driver: sep_release start\n"); |
cd1bb431 | 646 | |
d19cf32f AC |
647 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
648 | /* close IMR */ | |
649 | sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF); | |
cd1bb431 | 650 | |
d19cf32f AC |
651 | /* release IRQ line */ |
652 | free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address); | |
cd1bb431 MA |
653 | |
654 | #endif | |
655 | ||
d19cf32f AC |
656 | /* unlock the sep mutex */ |
657 | mutex_unlock(&sep_mutex); | |
cd1bb431 | 658 | |
d19cf32f | 659 | dbg("SEP Driver:<-------- sep_release end\n"); |
cd1bb431 | 660 | |
d19cf32f | 661 | return 0; |
cd1bb431 MA |
662 | } |
663 | ||
664 | ||
665 | ||
666 | ||
667 | /*--------------------------------------------------------------- | |
668 | map function - this functions maps the message shared area | |
669 | -----------------------------------------------------------------*/ | |
d19cf32f | 670 | static int sep_mmap(struct file *filp, struct vm_area_struct *vma) |
cd1bb431 | 671 | { |
d19cf32f | 672 | unsigned long phys_addr; |
cd1bb431 | 673 | |
d19cf32f | 674 | dbg("-------->SEP Driver: mmap start\n"); |
cd1bb431 | 675 | |
d19cf32f AC |
676 | /* check that the size of the mapped range is as the size of the message |
677 | shared area */ | |
678 | if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) { | |
679 | edbg("SEP Driver mmap requested size is more than allowed\n"); | |
680 | printk(KERN_WARNING "SEP Driver mmap requested size is more \ | |
cd1bb431 | 681 | than allowed\n"); |
d19cf32f AC |
682 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_end); |
683 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_start); | |
684 | return -EAGAIN; | |
685 | } | |
686 | ||
687 | edbg("SEP Driver:g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr); | |
688 | ||
689 | /* get physical address */ | |
690 | phys_addr = sep_dev->phys_shared_area_addr; | |
691 | ||
692 | edbg("SEP Driver: phys_addr is %08lx\n", phys_addr); | |
693 | ||
694 | if (remap_pfn_range(vma, vma->vm_start, phys_addr >> PAGE_SHIFT, vma->vm_end - vma->vm_start, vma->vm_page_prot)) { | |
695 | edbg("SEP Driver remap_page_range failed\n"); | |
696 | printk(KERN_WARNING "SEP Driver remap_page_range failed\n"); | |
697 | return -EAGAIN; | |
698 | } | |
699 | ||
700 | dbg("SEP Driver:<-------- mmap end\n"); | |
701 | ||
702 | return 0; | |
cd1bb431 MA |
703 | } |
704 | ||
705 | ||
706 | /*----------------------------------------------- | |
707 | poll function | |
708 | *----------------------------------------------*/ | |
d19cf32f | 709 | static unsigned int sep_poll(struct file *filp, poll_table * wait) |
cd1bb431 | 710 | { |
d19cf32f | 711 | unsigned long count; |
d19cf32f | 712 | unsigned int mask = 0; |
f93e4bf9 | 713 | unsigned long retVal = 0; /* flow id */ |
cd1bb431 | 714 | |
d19cf32f | 715 | dbg("---------->SEP Driver poll: start\n"); |
cd1bb431 MA |
716 | |
717 | ||
718 | #if SEP_DRIVER_POLLING_MODE | |
719 | ||
d19cf32f AC |
720 | while (sep_dev->host_to_sep_send_counter != (retVal & 0x7FFFFFFF)) { |
721 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
cd1bb431 | 722 | |
d19cf32f AC |
723 | for (count = 0; count < 10 * 4; count += 4) |
724 | edbg("Poll Debug Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + count))); | |
725 | } | |
cd1bb431 | 726 | |
d19cf32f | 727 | sep_dev->sep_to_host_reply_counter++; |
cd1bb431 | 728 | #else |
d19cf32f AC |
729 | /* add the event to the polling wait table */ |
730 | poll_wait(filp, &g_sep_event, wait); | |
cd1bb431 MA |
731 | |
732 | #endif | |
733 | ||
d19cf32f AC |
734 | edbg("sep_dev->host_to_sep_send_counter is %lu\n", sep_dev->host_to_sep_send_counter); |
735 | edbg("sep_dev->sep_to_host_reply_counter is %lu\n", sep_dev->sep_to_host_reply_counter); | |
736 | ||
737 | /* check if the data is ready */ | |
738 | if (sep_dev->host_to_sep_send_counter == sep_dev->sep_to_host_reply_counter) { | |
739 | for (count = 0; count < 12 * 4; count += 4) | |
740 | edbg("Sep Mesg Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count))); | |
741 | ||
742 | for (count = 0; count < 10 * 4; count += 4) | |
743 | edbg("Debug Data Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + 0x1800 + count))); | |
744 | ||
745 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
746 | edbg("retVal is %lu\n", retVal); | |
747 | /* check if the this is sep reply or request */ | |
748 | if (retVal >> 31) { | |
749 | edbg("SEP Driver: sep request in\n"); | |
750 | /* request */ | |
751 | mask |= POLLOUT | POLLWRNORM; | |
752 | } else { | |
753 | edbg("SEP Driver: sep reply in\n"); | |
754 | mask |= POLLIN | POLLRDNORM; | |
755 | } | |
cd1bb431 | 756 | } |
d19cf32f AC |
757 | dbg("SEP Driver:<-------- poll exit\n"); |
758 | return mask; | |
cd1bb431 MA |
759 | } |
760 | ||
761 | ||
d19cf32f | 762 | static int sep_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) |
cd1bb431 | 763 | { |
f93e4bf9 | 764 | int error = 0; |
cd1bb431 | 765 | |
d19cf32f | 766 | dbg("------------>SEP Driver: ioctl start\n"); |
cd1bb431 | 767 | |
d19cf32f | 768 | edbg("SEP Driver: cmd is %x\n", cmd); |
cd1bb431 | 769 | |
d19cf32f AC |
770 | /* check that the command is for sep device */ |
771 | if (_IOC_TYPE(cmd) != SEP_IOC_MAGIC_NUMBER) | |
772 | error = -ENOTTY; | |
cd1bb431 MA |
773 | |
774 | switch (cmd) { | |
775 | case SEP_IOCSENDSEPCOMMAND: | |
d19cf32f AC |
776 | /* send command to SEP */ |
777 | sep_send_command_handler(); | |
d19cf32f | 778 | edbg("SEP Driver: after sep_send_command_handler\n"); |
d19cf32f | 779 | break; |
cd1bb431 | 780 | case SEP_IOCSENDSEPRPLYCOMMAND: |
d19cf32f AC |
781 | /* send reply command to SEP */ |
782 | sep_send_reply_command_handler(); | |
d19cf32f | 783 | break; |
cd1bb431 | 784 | case SEP_IOCALLOCDATAPOLL: |
d19cf32f AC |
785 | /* allocate data pool */ |
786 | error = sep_allocate_data_pool_memory_handler(arg); | |
d19cf32f | 787 | break; |
cd1bb431 | 788 | case SEP_IOCWRITEDATAPOLL: |
d19cf32f AC |
789 | /* write data into memory pool */ |
790 | error = sep_write_into_data_pool_handler(arg); | |
d19cf32f | 791 | break; |
cd1bb431 | 792 | case SEP_IOCREADDATAPOLL: |
d19cf32f AC |
793 | /* read data from data pool into application memory */ |
794 | error = sep_read_from_data_pool_handler(arg); | |
d19cf32f | 795 | break; |
cd1bb431 | 796 | case SEP_IOCCREATESYMDMATABLE: |
d19cf32f AC |
797 | /* create dma table for synhronic operation */ |
798 | error = sep_create_sync_dma_tables_handler(arg); | |
d19cf32f | 799 | break; |
cd1bb431 | 800 | case SEP_IOCCREATEFLOWDMATABLE: |
d19cf32f AC |
801 | /* create flow dma tables */ |
802 | error = sep_create_flow_dma_tables_handler(arg); | |
d19cf32f | 803 | break; |
cd1bb431 | 804 | case SEP_IOCFREEDMATABLEDATA: |
d19cf32f AC |
805 | /* free the pages */ |
806 | error = sep_free_dma_table_data_handler(); | |
d19cf32f | 807 | break; |
cd1bb431 | 808 | case SEP_IOCSETFLOWID: |
d19cf32f AC |
809 | /* set flow id */ |
810 | error = sep_set_flow_id_handler(arg); | |
d19cf32f | 811 | break; |
cd1bb431 | 812 | case SEP_IOCADDFLOWTABLE: |
d19cf32f AC |
813 | /* add tables to the dynamic flow */ |
814 | error = sep_add_flow_tables_handler(arg); | |
d19cf32f | 815 | break; |
cd1bb431 | 816 | case SEP_IOCADDFLOWMESSAGE: |
d19cf32f AC |
817 | /* add message of add tables to flow */ |
818 | error = sep_add_flow_tables_message_handler(arg); | |
d19cf32f | 819 | break; |
cd1bb431 | 820 | case SEP_IOCSEPSTART: |
d19cf32f AC |
821 | /* start command to sep */ |
822 | error = sep_start_handler(); | |
823 | break; | |
cd1bb431 | 824 | case SEP_IOCSEPINIT: |
d19cf32f AC |
825 | /* init command to sep */ |
826 | error = sep_init_handler(arg); | |
827 | break; | |
cd1bb431 | 828 | case SEP_IOCSETAPIMODE: |
d19cf32f AC |
829 | /* set non- blocking mode */ |
830 | error = sep_set_api_mode_handler(arg); | |
d19cf32f | 831 | break; |
cd1bb431 | 832 | case SEP_IOCGETSTATICPOOLADDR: |
cd1bb431 MA |
833 | /* get the physical and virtual addresses of the static pool */ |
834 | error = sep_get_static_pool_addr_handler(arg); | |
cd1bb431 | 835 | break; |
cd1bb431 | 836 | case SEP_IOCENDTRANSACTION: |
d19cf32f | 837 | error = sep_end_transaction_handler(arg); |
cd1bb431 | 838 | break; |
cd1bb431 | 839 | case SEP_IOCREALLOCCACHERES: |
d19cf32f | 840 | error = sep_realloc_cache_resident_handler(arg); |
d19cf32f | 841 | break; |
cd1bb431 | 842 | case SEP_IOCGETMAPPEDADDROFFSET: |
d19cf32f | 843 | error = sep_get_physical_mapped_offset_handler(arg); |
d19cf32f | 844 | break; |
cd1bb431 | 845 | case SEP_IOCGETIME: |
d19cf32f | 846 | error = sep_get_time_handler(arg); |
d19cf32f | 847 | break; |
cd1bb431 | 848 | default: |
d19cf32f AC |
849 | error = -ENOTTY; |
850 | break; | |
851 | } | |
d19cf32f | 852 | dbg("SEP Driver:<-------- ioctl end\n"); |
d19cf32f | 853 | return error; |
cd1bb431 MA |
854 | } |
855 | ||
856 | ||
cd1bb431 MA |
857 | |
858 | /* | |
859 | interrupt handler function | |
860 | */ | |
861 | irqreturn_t sep_inthandler(int irq, void *dev_id) | |
862 | { | |
d19cf32f | 863 | irqreturn_t int_error; |
d19cf32f | 864 | unsigned long error; |
d19cf32f | 865 | unsigned long reg_val; |
d19cf32f | 866 | unsigned long flow_id; |
d19cf32f | 867 | struct sep_flow_context_t *flow_context_ptr; |
cd1bb431 | 868 | |
d19cf32f | 869 | int_error = IRQ_HANDLED; |
cd1bb431 | 870 | |
d19cf32f AC |
871 | /* read the IRR register to check if this is SEP interrupt */ |
872 | reg_val = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR); | |
873 | edbg("SEP Interrupt - reg is %08lx\n", reg_val); | |
cd1bb431 | 874 | |
d19cf32f AC |
875 | /* check if this is the flow interrupt */ |
876 | if (0 /*reg_val & (0x1 << 11) */ ) { | |
877 | /* read GPRO to find out the which flow is done */ | |
878 | flow_id = sep_read_reg(sep_dev, HW_HOST_IRR_REG_ADDR); | |
cd1bb431 | 879 | |
d19cf32f AC |
880 | /* find the contex of the flow */ |
881 | error = sep_find_flow_context(flow_id >> 28, &flow_context_ptr); | |
882 | if (error) | |
883 | goto end_function_with_error; | |
cd1bb431 | 884 | |
d19cf32f | 885 | INIT_WORK(&flow_context_ptr->flow_wq, sep_flow_done_handler); |
cd1bb431 | 886 | |
d19cf32f AC |
887 | /* queue the work */ |
888 | queue_work(sep_dev->flow_wq_ptr, &flow_context_ptr->flow_wq); | |
cd1bb431 | 889 | |
cd1bb431 | 890 | } else { |
d19cf32f AC |
891 | /* check if this is reply interrupt from SEP */ |
892 | if (reg_val & (0x1 << 13)) { | |
893 | /* update the counter of reply messages */ | |
894 | sep_dev->sep_to_host_reply_counter++; | |
895 | ||
896 | /* wake up the waiting process */ | |
897 | wake_up(&g_sep_event); | |
898 | } else { | |
899 | int_error = IRQ_NONE; | |
900 | goto end_function; | |
901 | } | |
cd1bb431 | 902 | } |
f93e4bf9 | 903 | end_function_with_error: |
d19cf32f AC |
904 | /* clear the interrupt */ |
905 | sep_write_reg(sep_dev, HW_HOST_ICR_REG_ADDR, reg_val); | |
f93e4bf9 | 906 | end_function: |
d19cf32f | 907 | return int_error; |
cd1bb431 MA |
908 | } |
909 | ||
910 | ||
911 | /* | |
912 | This function prepares only input DMA table for synhronic symmetric | |
913 | operations (HASH) | |
914 | */ | |
d19cf32f | 915 | int sep_prepare_input_dma_table(unsigned long app_virt_addr, unsigned long data_size, unsigned long block_size, unsigned long *lli_table_ptr, unsigned long *num_entries_ptr, unsigned long *table_data_size_ptr, bool isKernelVirtualAddress) |
cd1bb431 | 916 | { |
d19cf32f AC |
917 | /* pointer to the info entry of the table - the last entry */ |
918 | struct sep_lli_entry_t *info_entry_ptr; | |
d19cf32f AC |
919 | /* array of pointers ot page */ |
920 | struct sep_lli_entry_t *lli_array_ptr; | |
d19cf32f AC |
921 | /* points to the first entry to be processed in the lli_in_array */ |
922 | unsigned long current_entry; | |
d19cf32f AC |
923 | /* num entries in the virtual buffer */ |
924 | unsigned long sep_lli_entries; | |
d19cf32f AC |
925 | /* lli table pointer */ |
926 | struct sep_lli_entry_t *in_lli_table_ptr; | |
d19cf32f AC |
927 | /* the total data in one table */ |
928 | unsigned long table_data_size; | |
d19cf32f AC |
929 | /* number of entries in lli table */ |
930 | unsigned long num_entries_in_table; | |
d19cf32f AC |
931 | /* next table address */ |
932 | unsigned long lli_table_alloc_addr; | |
d19cf32f | 933 | unsigned long result; |
cd1bb431 | 934 | |
d19cf32f | 935 | dbg("SEP Driver:--------> sep_prepare_input_dma_table start\n"); |
cd1bb431 | 936 | |
d19cf32f AC |
937 | edbg("SEP Driver:data_size is %lu\n", data_size); |
938 | edbg("SEP Driver:block_size is %lu\n", block_size); | |
cd1bb431 | 939 | |
d19cf32f AC |
940 | /* initialize the pages pointers */ |
941 | sep_dev->in_page_array = 0; | |
942 | sep_dev->in_num_pages = 0; | |
cd1bb431 | 943 | |
d19cf32f AC |
944 | if (data_size == 0) { |
945 | /* special case - created 2 entries table with zero data */ | |
946 | in_lli_table_ptr = (struct sep_lli_entry_t *) (sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES); | |
947 | in_lli_table_ptr->physical_address = sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
948 | in_lli_table_ptr->block_size = 0; | |
cd1bb431 | 949 | |
d19cf32f AC |
950 | in_lli_table_ptr++; |
951 | in_lli_table_ptr->physical_address = 0xFFFFFFFF; | |
952 | in_lli_table_ptr->block_size = 0; | |
cd1bb431 | 953 | |
d19cf32f AC |
954 | *lli_table_ptr = sep_dev->phys_shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
955 | *num_entries_ptr = 2; | |
956 | *table_data_size_ptr = 0; | |
cd1bb431 | 957 | |
d19cf32f | 958 | goto end_function; |
cd1bb431 MA |
959 | } |
960 | ||
d19cf32f AC |
961 | /* check if the pages are in Kernel Virtual Address layout */ |
962 | if (isKernelVirtualAddress == true) | |
963 | /* lock the pages of the kernel buffer and translate them to pages */ | |
964 | result = sep_lock_kernel_pages(app_virt_addr, data_size, &sep_dev->in_num_pages, &lli_array_ptr, &sep_dev->in_page_array); | |
965 | else | |
966 | /* lock the pages of the user buffer and translate them to pages */ | |
967 | result = sep_lock_user_pages(app_virt_addr, data_size, &sep_dev->in_num_pages, &lli_array_ptr, &sep_dev->in_page_array); | |
968 | ||
969 | if (result) | |
970 | return result; | |
971 | ||
972 | edbg("SEP Driver:output sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages); | |
973 | ||
974 | current_entry = 0; | |
975 | info_entry_ptr = 0; | |
976 | sep_lli_entries = sep_dev->in_num_pages; | |
cd1bb431 | 977 | |
d19cf32f AC |
978 | /* initiate to point after the message area */ |
979 | lli_table_alloc_addr = sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 980 | |
d19cf32f AC |
981 | /* loop till all the entries in in array are not processed */ |
982 | while (current_entry < sep_lli_entries) { | |
983 | /* set the new input and output tables */ | |
984 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 985 | |
d19cf32f | 986 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
cd1bb431 | 987 | |
d19cf32f AC |
988 | /* calculate the maximum size of data for input table */ |
989 | table_data_size = sep_calculate_lli_table_max_size(&lli_array_ptr[current_entry], (sep_lli_entries - current_entry)); | |
cd1bb431 | 990 | |
d19cf32f AC |
991 | /* now calculate the table size so that it will be module block size */ |
992 | table_data_size = (table_data_size / block_size) * block_size; | |
993 | ||
994 | edbg("SEP Driver:output table_data_size is %lu\n", table_data_size); | |
995 | ||
996 | /* construct input lli table */ | |
997 | sep_build_lli_table(&lli_array_ptr[current_entry], in_lli_table_ptr, ¤t_entry, &num_entries_in_table, table_data_size); | |
998 | ||
999 | if (info_entry_ptr == 0) { | |
1000 | /* set the output parameters to physical addresses */ | |
1001 | *lli_table_ptr = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
1002 | *num_entries_ptr = num_entries_in_table; | |
1003 | *table_data_size_ptr = table_data_size; | |
1004 | ||
1005 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_ptr); | |
1006 | } else { | |
1007 | /* update the info entry of the previous in table */ | |
1008 | info_entry_ptr->physical_address = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
1009 | info_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); | |
1010 | } | |
1011 | ||
1012 | /* save the pointer to the info entry of the current tables */ | |
1013 | info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
1014 | } | |
1015 | ||
1016 | /* print input tables */ | |
1017 | sep_debug_print_lli_tables((struct sep_lli_entry_t *) | |
1018 | sep_shared_area_phys_to_virt(*lli_table_ptr), *num_entries_ptr, *table_data_size_ptr); | |
1019 | ||
1020 | /* the array of the pages */ | |
1021 | kfree(lli_array_ptr); | |
f93e4bf9 | 1022 | end_function: |
d19cf32f | 1023 | dbg("SEP Driver:<-------- sep_prepare_input_dma_table end\n"); |
d19cf32f | 1024 | return 0; |
cd1bb431 MA |
1025 | |
1026 | } | |
1027 | ||
1028 | /* | |
1029 | This function builds input and output DMA tables for synhronic | |
1030 | symmetric operations (AES, DES). It also checks that each table | |
1031 | is of the modular block size | |
1032 | */ | |
d19cf32f AC |
1033 | int sep_prepare_input_output_dma_table(unsigned long app_virt_in_addr, |
1034 | unsigned long app_virt_out_addr, | |
1035 | unsigned long data_size, | |
1036 | unsigned long block_size, | |
1037 | unsigned long *lli_table_in_ptr, unsigned long *lli_table_out_ptr, unsigned long *in_num_entries_ptr, unsigned long *out_num_entries_ptr, unsigned long *table_data_size_ptr, bool isKernelVirtualAddress) | |
cd1bb431 | 1038 | { |
d19cf32f AC |
1039 | /* array of pointers of page */ |
1040 | struct sep_lli_entry_t *lli_in_array; | |
d19cf32f AC |
1041 | /* array of pointers of page */ |
1042 | struct sep_lli_entry_t *lli_out_array; | |
f93e4bf9 | 1043 | int result = 0; |
cd1bb431 | 1044 | |
d19cf32f | 1045 | dbg("SEP Driver:--------> sep_prepare_input_output_dma_table start\n"); |
cd1bb431 | 1046 | |
d19cf32f AC |
1047 | /* initialize the pages pointers */ |
1048 | sep_dev->in_page_array = 0; | |
1049 | sep_dev->out_page_array = 0; | |
cd1bb431 | 1050 | |
d19cf32f AC |
1051 | /* check if the pages are in Kernel Virtual Address layout */ |
1052 | if (isKernelVirtualAddress == true) { | |
1053 | /* lock the pages of the kernel buffer and translate them to pages */ | |
1054 | result = sep_lock_kernel_pages(app_virt_in_addr, data_size, &sep_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array); | |
1055 | if (result) { | |
1056 | edbg("SEP Driver: sep_lock_kernel_pages for input virtual buffer failed\n"); | |
1057 | goto end_function; | |
1058 | } | |
1059 | } else { | |
1060 | /* lock the pages of the user buffer and translate them to pages */ | |
1061 | result = sep_lock_user_pages(app_virt_in_addr, data_size, &sep_dev->in_num_pages, &lli_in_array, &sep_dev->in_page_array); | |
1062 | if (result) { | |
1063 | edbg("SEP Driver: sep_lock_user_pages for input virtual buffer failed\n"); | |
1064 | goto end_function; | |
1065 | } | |
cd1bb431 | 1066 | } |
d19cf32f AC |
1067 | |
1068 | if (isKernelVirtualAddress == true) { | |
1069 | result = sep_lock_kernel_pages(app_virt_out_addr, data_size, &sep_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array); | |
1070 | if (result) { | |
1071 | edbg("SEP Driver: sep_lock_kernel_pages for output virtual buffer failed\n"); | |
1072 | goto end_function_with_error1; | |
1073 | } | |
1074 | } else { | |
1075 | result = sep_lock_user_pages(app_virt_out_addr, data_size, &sep_dev->out_num_pages, &lli_out_array, &sep_dev->out_page_array); | |
1076 | if (result) { | |
1077 | edbg("SEP Driver: sep_lock_user_pages for output virtual buffer failed\n"); | |
1078 | goto end_function_with_error1; | |
1079 | } | |
cd1bb431 | 1080 | } |
d19cf32f AC |
1081 | edbg("sep_dev->in_num_pages is %lu\n", sep_dev->in_num_pages); |
1082 | edbg("sep_dev->out_num_pages is %lu\n", sep_dev->out_num_pages); | |
1083 | edbg("SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n", SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); | |
cd1bb431 MA |
1084 | |
1085 | ||
d19cf32f AC |
1086 | /* call the fucntion that creates table from the lli arrays */ |
1087 | result = sep_construct_dma_tables_from_lli(lli_in_array, sep_dev->in_num_pages, lli_out_array, sep_dev->out_num_pages, block_size, lli_table_in_ptr, lli_table_out_ptr, in_num_entries_ptr, out_num_entries_ptr, table_data_size_ptr); | |
1088 | if (result) { | |
1089 | edbg("SEP Driver: sep_construct_dma_tables_from_lli failed\n"); | |
1090 | goto end_function_with_error2; | |
1091 | } | |
cd1bb431 | 1092 | |
d19cf32f | 1093 | /* fall through - free the lli entry arrays */ |
d19cf32f AC |
1094 | dbg("in_num_entries_ptr is %08lx\n", *in_num_entries_ptr); |
1095 | dbg("out_num_entries_ptr is %08lx\n", *out_num_entries_ptr); | |
1096 | dbg("table_data_size_ptr is %08lx\n", *table_data_size_ptr); | |
f93e4bf9 | 1097 | end_function_with_error2: |
d19cf32f | 1098 | kfree(lli_out_array); |
f93e4bf9 | 1099 | end_function_with_error1: |
d19cf32f | 1100 | kfree(lli_in_array); |
f93e4bf9 | 1101 | end_function: |
d19cf32f | 1102 | dbg("SEP Driver:<-------- sep_prepare_input_output_dma_table end result = %d\n", (int) result); |
d19cf32f | 1103 | return result; |
cd1bb431 MA |
1104 | |
1105 | } | |
1106 | ||
1107 | ||
1108 | /* | |
1109 | This function creates the input and output dma tables for | |
1110 | symmetric operations (AES/DES) according to the block size from LLI arays | |
1111 | */ | |
d19cf32f AC |
1112 | int sep_construct_dma_tables_from_lli(struct sep_lli_entry_t *lli_in_array, |
1113 | unsigned long sep_in_lli_entries, | |
1114 | struct sep_lli_entry_t *lli_out_array, | |
1115 | unsigned long sep_out_lli_entries, | |
1116 | unsigned long block_size, unsigned long *lli_table_in_ptr, unsigned long *lli_table_out_ptr, unsigned long *in_num_entries_ptr, unsigned long *out_num_entries_ptr, unsigned long *table_data_size_ptr) | |
cd1bb431 | 1117 | { |
d19cf32f AC |
1118 | /* points to the area where next lli table can be allocated */ |
1119 | unsigned long lli_table_alloc_addr; | |
d19cf32f AC |
1120 | /* input lli table */ |
1121 | struct sep_lli_entry_t *in_lli_table_ptr; | |
d19cf32f AC |
1122 | /* output lli table */ |
1123 | struct sep_lli_entry_t *out_lli_table_ptr; | |
d19cf32f AC |
1124 | /* pointer to the info entry of the table - the last entry */ |
1125 | struct sep_lli_entry_t *info_in_entry_ptr; | |
d19cf32f AC |
1126 | /* pointer to the info entry of the table - the last entry */ |
1127 | struct sep_lli_entry_t *info_out_entry_ptr; | |
d19cf32f AC |
1128 | /* points to the first entry to be processed in the lli_in_array */ |
1129 | unsigned long current_in_entry; | |
d19cf32f AC |
1130 | /* points to the first entry to be processed in the lli_out_array */ |
1131 | unsigned long current_out_entry; | |
d19cf32f AC |
1132 | /* max size of the input table */ |
1133 | unsigned long in_table_data_size; | |
d19cf32f AC |
1134 | /* max size of the output table */ |
1135 | unsigned long out_table_data_size; | |
d19cf32f AC |
1136 | /* flag te signifies if this is the first tables build from the arrays */ |
1137 | unsigned long first_table_flag; | |
d19cf32f AC |
1138 | /* the data size that should be in table */ |
1139 | unsigned long table_data_size; | |
d19cf32f AC |
1140 | /* number of etnries in the input table */ |
1141 | unsigned long num_entries_in_table; | |
d19cf32f AC |
1142 | /* number of etnries in the output table */ |
1143 | unsigned long num_entries_out_table; | |
cd1bb431 | 1144 | |
d19cf32f AC |
1145 | dbg("SEP Driver:--------> sep_construct_dma_tables_from_lli start\n"); |
1146 | ||
1147 | /* initiate to pint after the message area */ | |
1148 | lli_table_alloc_addr = sep_dev->shared_area_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
1149 | ||
1150 | current_in_entry = 0; | |
1151 | current_out_entry = 0; | |
1152 | first_table_flag = 1; | |
1153 | info_in_entry_ptr = 0; | |
1154 | info_out_entry_ptr = 0; | |
1155 | ||
1156 | /* loop till all the entries in in array are not processed */ | |
1157 | while (current_in_entry < sep_in_lli_entries) { | |
1158 | /* set the new input and output tables */ | |
1159 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
1160 | ||
1161 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; | |
1162 | ||
1163 | /* set the first output tables */ | |
1164 | out_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
1165 | ||
1166 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; | |
1167 | ||
1168 | /* calculate the maximum size of data for input table */ | |
1169 | in_table_data_size = sep_calculate_lli_table_max_size(&lli_in_array[current_in_entry], (sep_in_lli_entries - current_in_entry)); | |
1170 | ||
1171 | /* calculate the maximum size of data for output table */ | |
1172 | out_table_data_size = sep_calculate_lli_table_max_size(&lli_out_array[current_out_entry], (sep_out_lli_entries - current_out_entry)); | |
1173 | ||
1174 | edbg("SEP Driver:in_table_data_size is %lu\n", in_table_data_size); | |
1175 | edbg("SEP Driver:out_table_data_size is %lu\n", out_table_data_size); | |
1176 | ||
1177 | /* check where the data is smallest */ | |
1178 | table_data_size = in_table_data_size; | |
1179 | if (table_data_size > out_table_data_size) | |
1180 | table_data_size = out_table_data_size; | |
1181 | ||
1182 | /* now calculate the table size so that it will be module block size */ | |
1183 | table_data_size = (table_data_size / block_size) * block_size; | |
1184 | ||
1185 | dbg("SEP Driver:table_data_size is %lu\n", table_data_size); | |
1186 | ||
1187 | /* construct input lli table */ | |
1188 | sep_build_lli_table(&lli_in_array[current_in_entry], in_lli_table_ptr, ¤t_in_entry, &num_entries_in_table, table_data_size); | |
1189 | ||
1190 | /* construct output lli table */ | |
1191 | sep_build_lli_table(&lli_out_array[current_out_entry], out_lli_table_ptr, ¤t_out_entry, &num_entries_out_table, table_data_size); | |
1192 | ||
1193 | /* if info entry is null - this is the first table built */ | |
1194 | if (info_in_entry_ptr == 0) { | |
1195 | /* set the output parameters to physical addresses */ | |
1196 | *lli_table_in_ptr = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
1197 | *in_num_entries_ptr = num_entries_in_table; | |
1198 | *lli_table_out_ptr = sep_shared_area_virt_to_phys((unsigned long) out_lli_table_ptr); | |
1199 | *out_num_entries_ptr = num_entries_out_table; | |
1200 | *table_data_size_ptr = table_data_size; | |
1201 | ||
1202 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr); | |
1203 | edbg("SEP Driver:output lli_table_out_ptr is %08lx\n", *lli_table_out_ptr); | |
1204 | } else { | |
1205 | /* update the info entry of the previous in table */ | |
1206 | info_in_entry_ptr->physical_address = sep_shared_area_virt_to_phys((unsigned long) in_lli_table_ptr); | |
1207 | info_in_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); | |
1208 | ||
1209 | /* update the info entry of the previous in table */ | |
1210 | info_out_entry_ptr->physical_address = sep_shared_area_virt_to_phys((unsigned long) out_lli_table_ptr); | |
1211 | info_out_entry_ptr->block_size = ((num_entries_out_table) << 24) | (table_data_size); | |
1212 | } | |
1213 | ||
1214 | /* save the pointer to the info entry of the current tables */ | |
1215 | info_in_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
1216 | info_out_entry_ptr = out_lli_table_ptr + num_entries_out_table - 1; | |
1217 | ||
1218 | edbg("SEP Driver:output num_entries_out_table is %lu\n", (unsigned long) num_entries_out_table); | |
1219 | edbg("SEP Driver:output info_in_entry_ptr is %lu\n", (unsigned long) info_in_entry_ptr); | |
1220 | edbg("SEP Driver:output info_out_entry_ptr is %lu\n", (unsigned long) info_out_entry_ptr); | |
cd1bb431 MA |
1221 | } |
1222 | ||
d19cf32f AC |
1223 | /* print input tables */ |
1224 | sep_debug_print_lli_tables((struct sep_lli_entry_t *) | |
1225 | sep_shared_area_phys_to_virt(*lli_table_in_ptr), *in_num_entries_ptr, *table_data_size_ptr); | |
d19cf32f AC |
1226 | /* print output tables */ |
1227 | sep_debug_print_lli_tables((struct sep_lli_entry_t *) | |
1228 | sep_shared_area_phys_to_virt(*lli_table_out_ptr), *out_num_entries_ptr, *table_data_size_ptr); | |
d19cf32f | 1229 | dbg("SEP Driver:<-------- sep_construct_dma_tables_from_lli end\n"); |
d19cf32f | 1230 | return 0; |
cd1bb431 MA |
1231 | } |
1232 | ||
1233 | /* | |
1234 | this function calculates the size of data that can be inserted into the lli | |
1235 | table from this array the condition is that either the table is full | |
1236 | (all etnries are entered), or there are no more entries in the lli array | |
1237 | */ | |
d19cf32f | 1238 | unsigned long sep_calculate_lli_table_max_size(struct sep_lli_entry_t *lli_in_array_ptr, unsigned long num_array_entries) |
cd1bb431 | 1239 | { |
f93e4bf9 | 1240 | unsigned long table_data_size = 0; |
d19cf32f | 1241 | unsigned long counter; |
cd1bb431 | 1242 | |
d19cf32f AC |
1243 | /* calculate the data in the out lli table if till we fill the whole |
1244 | table or till the data has ended */ | |
1245 | for (counter = 0; (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) && (counter < num_array_entries); counter++) | |
1246 | table_data_size += lli_in_array_ptr[counter].block_size; | |
d19cf32f | 1247 | return table_data_size; |
cd1bb431 MA |
1248 | } |
1249 | ||
1250 | /* | |
1251 | this functions builds ont lli table from the lli_array according to | |
1252 | the given size of data | |
1253 | */ | |
d19cf32f | 1254 | static void sep_build_lli_table(struct sep_lli_entry_t *lli_array_ptr, struct sep_lli_entry_t *lli_table_ptr, unsigned long *num_processed_entries_ptr, unsigned long *num_table_entries_ptr, unsigned long table_data_size) |
cd1bb431 | 1255 | { |
d19cf32f | 1256 | unsigned long curr_table_data_size; |
d19cf32f AC |
1257 | /* counter of lli array entry */ |
1258 | unsigned long array_counter; | |
cd1bb431 | 1259 | |
d19cf32f AC |
1260 | dbg("SEP Driver:--------> sep_build_lli_table start\n"); |
1261 | ||
1262 | /* init currrent table data size and lli array entry counter */ | |
1263 | curr_table_data_size = 0; | |
1264 | array_counter = 0; | |
1265 | *num_table_entries_ptr = 1; | |
1266 | ||
1267 | edbg("SEP Driver:table_data_size is %lu\n", table_data_size); | |
1268 | ||
1269 | /* fill the table till table size reaches the needed amount */ | |
1270 | while (curr_table_data_size < table_data_size) { | |
1271 | /* update the number of entries in table */ | |
1272 | (*num_table_entries_ptr)++; | |
1273 | ||
1274 | lli_table_ptr->physical_address = lli_array_ptr[array_counter].physical_address; | |
1275 | lli_table_ptr->block_size = lli_array_ptr[array_counter].block_size; | |
1276 | curr_table_data_size += lli_table_ptr->block_size; | |
1277 | ||
1278 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1279 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1280 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1281 | ||
1282 | /* check for overflow of the table data */ | |
1283 | if (curr_table_data_size > table_data_size) { | |
1284 | edbg("SEP Driver:curr_table_data_size > table_data_size\n"); | |
1285 | ||
1286 | /* update the size of block in the table */ | |
1287 | lli_table_ptr->block_size -= (curr_table_data_size - table_data_size); | |
1288 | ||
1289 | /* update the physical address in the lli array */ | |
1290 | lli_array_ptr[array_counter].physical_address += lli_table_ptr->block_size; | |
1291 | ||
1292 | /* update the block size left in the lli array */ | |
1293 | lli_array_ptr[array_counter].block_size = (curr_table_data_size - table_data_size); | |
1294 | } else | |
1295 | /* advance to the next entry in the lli_array */ | |
1296 | array_counter++; | |
1297 | ||
1298 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1299 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1300 | ||
1301 | /* move to the next entry in table */ | |
1302 | lli_table_ptr++; | |
1303 | } | |
1304 | ||
1305 | /* set the info entry to default */ | |
1306 | lli_table_ptr->physical_address = 0xffffffff; | |
1307 | lli_table_ptr->block_size = 0; | |
1308 | ||
1309 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1310 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1311 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1312 | ||
d19cf32f AC |
1313 | /* set the output parameter */ |
1314 | *num_processed_entries_ptr += array_counter; | |
1315 | ||
1316 | edbg("SEP Driver:*num_processed_entries_ptr is %lu\n", *num_processed_entries_ptr); | |
d19cf32f | 1317 | dbg("SEP Driver:<-------- sep_build_lli_table end\n"); |
d19cf32f | 1318 | return; |
cd1bb431 MA |
1319 | } |
1320 | ||
1321 | /* | |
1322 | this function goes over the list of the print created tables and | |
1323 | prints all the data | |
1324 | */ | |
d19cf32f | 1325 | static void sep_debug_print_lli_tables(struct sep_lli_entry_t *lli_table_ptr, unsigned long num_table_entries, unsigned long table_data_size) |
cd1bb431 | 1326 | { |
d19cf32f | 1327 | unsigned long table_count; |
d19cf32f | 1328 | unsigned long entries_count; |
cd1bb431 | 1329 | |
d19cf32f | 1330 | dbg("SEP Driver:--------> sep_debug_print_lli_tables start\n"); |
cd1bb431 | 1331 | |
d19cf32f AC |
1332 | table_count = 1; |
1333 | while ((unsigned long) lli_table_ptr != 0xffffffff) { | |
1334 | edbg("SEP Driver: lli table %08lx, table_data_size is %lu\n", table_count, table_data_size); | |
1335 | edbg("SEP Driver: num_table_entries is %lu\n", num_table_entries); | |
cd1bb431 | 1336 | |
d19cf32f AC |
1337 | /* print entries of the table (without info entry) */ |
1338 | for (entries_count = 0; entries_count < num_table_entries; entries_count++, lli_table_ptr++) { | |
1339 | edbg("SEP Driver:lli_table_ptr address is %08lx\n", (unsigned long) lli_table_ptr); | |
1340 | edbg("SEP Driver:phys address is %08lx block size is %lu\n", lli_table_ptr->physical_address, lli_table_ptr->block_size); | |
1341 | } | |
cd1bb431 | 1342 | |
d19cf32f AC |
1343 | /* point to the info entry */ |
1344 | lli_table_ptr--; | |
cd1bb431 | 1345 | |
d19cf32f AC |
1346 | edbg("SEP Driver:phys lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); |
1347 | edbg("SEP Driver:phys lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
cd1bb431 | 1348 | |
cd1bb431 | 1349 | |
d19cf32f AC |
1350 | table_data_size = lli_table_ptr->block_size & 0xffffff; |
1351 | num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff; | |
1352 | lli_table_ptr = (struct sep_lli_entry_t *) | |
1353 | (lli_table_ptr->physical_address); | |
cd1bb431 | 1354 | |
d19cf32f | 1355 | edbg("SEP Driver:phys table_data_size is %lu num_table_entries is %lu lli_table_ptr is%lu\n", table_data_size, num_table_entries, (unsigned long) lli_table_ptr); |
cd1bb431 | 1356 | |
d19cf32f AC |
1357 | if ((unsigned long) lli_table_ptr != 0xffffffff) |
1358 | lli_table_ptr = (struct sep_lli_entry_t *) sep_shared_area_phys_to_virt((unsigned long) lli_table_ptr); | |
1359 | ||
1360 | table_count++; | |
1361 | } | |
d19cf32f | 1362 | dbg("SEP Driver:<-------- sep_debug_print_lli_tables end\n"); |
cd1bb431 MA |
1363 | } |
1364 | ||
1365 | ||
1366 | /* | |
1367 | This function locks all the physical pages of the application virtual buffer | |
1368 | and construct a basic lli array, where each entry holds the physical page | |
1369 | address and the size that application data holds in this physical pages | |
1370 | */ | |
d19cf32f | 1371 | int sep_lock_user_pages(unsigned long app_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr) |
cd1bb431 | 1372 | { |
f93e4bf9 | 1373 | int error = 0; |
d19cf32f AC |
1374 | /* the the page of the end address of the user space buffer */ |
1375 | unsigned long end_page; | |
d19cf32f AC |
1376 | /* the page of the start address of the user space buffer */ |
1377 | unsigned long start_page; | |
d19cf32f AC |
1378 | /* the range in pages */ |
1379 | unsigned long num_pages; | |
d19cf32f | 1380 | struct page **page_array; |
d19cf32f | 1381 | struct sep_lli_entry_t *lli_array; |
d19cf32f | 1382 | unsigned long count; |
d19cf32f | 1383 | int result; |
cd1bb431 | 1384 | |
d19cf32f AC |
1385 | dbg("SEP Driver:--------> sep_lock_user_pages start\n"); |
1386 | ||
d19cf32f AC |
1387 | /* set start and end pages and num pages */ |
1388 | end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
1389 | start_page = app_virt_addr >> PAGE_SHIFT; | |
1390 | num_pages = end_page - start_page + 1; | |
1391 | ||
1392 | edbg("SEP Driver: app_virt_addr is %08lx\n", app_virt_addr); | |
1393 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
1394 | edbg("SEP Driver: start_page is %lu\n", start_page); | |
1395 | edbg("SEP Driver: end_page is %lu\n", end_page); | |
1396 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
1397 | ||
1398 | /* allocate array of pages structure pointers */ | |
1399 | page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); | |
1400 | if (!page_array) { | |
1401 | edbg("SEP Driver: kmalloc for page_array failed\n"); | |
1402 | ||
1403 | error = -ENOMEM; | |
1404 | goto end_function; | |
cd1bb431 | 1405 | } |
cd1bb431 | 1406 | |
d19cf32f AC |
1407 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
1408 | if (!lli_array) { | |
1409 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
cd1bb431 | 1410 | |
d19cf32f AC |
1411 | error = -ENOMEM; |
1412 | goto end_function_with_error1; | |
1413 | } | |
cd1bb431 | 1414 | |
d19cf32f AC |
1415 | /* convert the application virtual address into a set of physical */ |
1416 | down_read(¤t->mm->mmap_sem); | |
1417 | result = get_user_pages(current, current->mm, app_virt_addr, num_pages, 1, 0, page_array, 0); | |
1418 | up_read(¤t->mm->mmap_sem); | |
cd1bb431 | 1419 | |
d19cf32f AC |
1420 | /* check the number of pages locked - if not all then exit with error */ |
1421 | if (result != num_pages) { | |
1422 | dbg("SEP Driver: not all pages locked by get_user_pages\n"); | |
cd1bb431 | 1423 | |
d19cf32f AC |
1424 | error = -ENOMEM; |
1425 | goto end_function_with_error2; | |
1426 | } | |
1427 | ||
1428 | /* flush the cache */ | |
1429 | for (count = 0; count < num_pages; count++) | |
1430 | flush_dcache_page(page_array[count]); | |
1431 | ||
1432 | /* set the start address of the first page - app data may start not at | |
1433 | the beginning of the page */ | |
1434 | lli_array[0].physical_address = ((unsigned long) page_to_phys(page_array[0])) + (app_virt_addr & (~PAGE_MASK)); | |
1435 | ||
1436 | /* check that not all the data is in the first page only */ | |
1437 | if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size) | |
1438 | lli_array[0].block_size = data_size; | |
1439 | else | |
1440 | lli_array[0].block_size = PAGE_SIZE - (app_virt_addr & (~PAGE_MASK)); | |
1441 | ||
1442 | /* debug print */ | |
1443 | dbg("lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", lli_array[0].physical_address, lli_array[0].block_size); | |
1444 | ||
1445 | /* go from the second page to the prev before last */ | |
1446 | for (count = 1; count < (num_pages - 1); count++) { | |
1447 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
1448 | lli_array[count].block_size = PAGE_SIZE; | |
1449 | ||
f93e4bf9 | 1450 | edbg("lli_array[%lu].physical_address is %08lx, lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); |
d19cf32f AC |
1451 | } |
1452 | ||
1453 | /* if more then 1 pages locked - then update for the last page size needed */ | |
1454 | if (num_pages > 1) { | |
1455 | /* update the address of the last page */ | |
1456 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
1457 | ||
1458 | /* set the size of the last page */ | |
1459 | lli_array[count].block_size = (app_virt_addr + data_size) & (~PAGE_MASK); | |
1460 | ||
1461 | if (lli_array[count].block_size == 0) { | |
1462 | dbg("app_virt_addr is %08lx\n", app_virt_addr); | |
1463 | dbg("data_size is %lu\n", data_size); | |
1464 | while (1); | |
1465 | } | |
1466 | edbg("lli_array[%lu].physical_address is %08lx, \ | |
1467 | lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); | |
1468 | } | |
1469 | ||
1470 | /* set output params */ | |
1471 | *lli_array_ptr = lli_array; | |
1472 | *num_pages_ptr = num_pages; | |
1473 | *page_array_ptr = page_array; | |
d19cf32f AC |
1474 | goto end_function; |
1475 | ||
f93e4bf9 | 1476 | end_function_with_error2: |
d19cf32f AC |
1477 | /* release the cache */ |
1478 | for (count = 0; count < num_pages; count++) | |
1479 | page_cache_release(page_array[count]); | |
d19cf32f | 1480 | kfree(lli_array); |
f93e4bf9 | 1481 | end_function_with_error1: |
d19cf32f | 1482 | kfree(page_array); |
f93e4bf9 | 1483 | end_function: |
d19cf32f | 1484 | dbg("SEP Driver:<-------- sep_lock_user_pages end\n"); |
d19cf32f | 1485 | return 0; |
cd1bb431 MA |
1486 | } |
1487 | ||
1488 | /* | |
1489 | This function locks all the physical pages of the kernel virtual buffer | |
1490 | and construct a basic lli array, where each entry holds the physical | |
1491 | page address and the size that application data holds in this physical pages | |
1492 | */ | |
d19cf32f | 1493 | int sep_lock_kernel_pages(unsigned long kernel_virt_addr, unsigned long data_size, unsigned long *num_pages_ptr, struct sep_lli_entry_t **lli_array_ptr, struct page ***page_array_ptr) |
cd1bb431 | 1494 | { |
f93e4bf9 | 1495 | int error = 0; |
d19cf32f AC |
1496 | /* the the page of the end address of the user space buffer */ |
1497 | unsigned long end_page; | |
d19cf32f AC |
1498 | /* the page of the start address of the user space buffer */ |
1499 | unsigned long start_page; | |
d19cf32f AC |
1500 | /* the range in pages */ |
1501 | unsigned long num_pages; | |
d19cf32f | 1502 | struct sep_lli_entry_t *lli_array; |
d19cf32f AC |
1503 | /* next kernel address to map */ |
1504 | unsigned long next_kernel_address; | |
d19cf32f | 1505 | unsigned long count; |
cd1bb431 | 1506 | |
d19cf32f AC |
1507 | dbg("SEP Driver:--------> sep_lock_kernel_pages start\n"); |
1508 | ||
d19cf32f AC |
1509 | /* set start and end pages and num pages */ |
1510 | end_page = (kernel_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
1511 | start_page = kernel_virt_addr >> PAGE_SHIFT; | |
1512 | num_pages = end_page - start_page + 1; | |
1513 | ||
1514 | edbg("SEP Driver: kernel_virt_addr is %08lx\n", kernel_virt_addr); | |
1515 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
1516 | edbg("SEP Driver: start_page is %lx\n", start_page); | |
1517 | edbg("SEP Driver: end_page is %lx\n", end_page); | |
1518 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
1519 | ||
1520 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); | |
1521 | if (!lli_array) { | |
1522 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
d19cf32f AC |
1523 | error = -ENOMEM; |
1524 | goto end_function; | |
cd1bb431 MA |
1525 | } |
1526 | ||
d19cf32f AC |
1527 | /* set the start address of the first page - app data may start not at |
1528 | the beginning of the page */ | |
1529 | lli_array[0].physical_address = (unsigned long) virt_to_phys((unsigned long *) kernel_virt_addr); | |
cd1bb431 | 1530 | |
d19cf32f AC |
1531 | /* check that not all the data is in the first page only */ |
1532 | if ((PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK))) >= data_size) | |
1533 | lli_array[0].block_size = data_size; | |
1534 | else | |
1535 | lli_array[0].block_size = PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK)); | |
cd1bb431 | 1536 | |
d19cf32f AC |
1537 | /* debug print */ |
1538 | dbg("lli_array[0].physical_address is %08lx, lli_array[0].block_size is %lu\n", lli_array[0].physical_address, lli_array[0].block_size); | |
1539 | ||
1540 | /* advance the address to the start of the next page */ | |
1541 | next_kernel_address = (kernel_virt_addr & PAGE_MASK) + PAGE_SIZE; | |
1542 | ||
1543 | /* go from the second page to the prev before last */ | |
1544 | for (count = 1; count < (num_pages - 1); count++) { | |
1545 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
1546 | lli_array[count].block_size = PAGE_SIZE; | |
1547 | ||
f93e4bf9 | 1548 | edbg("lli_array[%lu].physical_address is %08lx, lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); |
d19cf32f AC |
1549 | next_kernel_address += PAGE_SIZE; |
1550 | } | |
cd1bb431 | 1551 | |
d19cf32f AC |
1552 | /* if more then 1 pages locked - then update for the last page size needed */ |
1553 | if (num_pages > 1) { | |
1554 | /* update the address of the last page */ | |
1555 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
cd1bb431 | 1556 | |
d19cf32f AC |
1557 | /* set the size of the last page */ |
1558 | lli_array[count].block_size = (kernel_virt_addr + data_size) & (~PAGE_MASK); | |
cd1bb431 | 1559 | |
d19cf32f AC |
1560 | if (lli_array[count].block_size == 0) { |
1561 | dbg("app_virt_addr is %08lx\n", kernel_virt_addr); | |
1562 | dbg("data_size is %lu\n", data_size); | |
1563 | while (1); | |
1564 | } | |
1565 | ||
f93e4bf9 | 1566 | edbg("lli_array[%lu].physical_address is %08lx, lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); |
d19cf32f | 1567 | } |
d19cf32f AC |
1568 | /* set output params */ |
1569 | *lli_array_ptr = lli_array; | |
1570 | *num_pages_ptr = num_pages; | |
1571 | *page_array_ptr = 0; | |
f93e4bf9 | 1572 | end_function: |
d19cf32f | 1573 | dbg("SEP Driver:<-------- sep_lock_kernel_pages end\n"); |
d19cf32f | 1574 | return 0; |
cd1bb431 MA |
1575 | } |
1576 | ||
1577 | /* | |
1578 | This function releases all the application virtual buffer physical pages, | |
1579 | that were previously locked | |
1580 | */ | |
d19cf32f | 1581 | int sep_free_dma_pages(struct page **page_array_ptr, unsigned long num_pages, unsigned long dirtyFlag) |
cd1bb431 | 1582 | { |
d19cf32f | 1583 | unsigned long count; |
cd1bb431 | 1584 | |
d19cf32f AC |
1585 | if (dirtyFlag) { |
1586 | for (count = 0; count < num_pages; count++) { | |
1587 | /* the out array was written, therefore the data was changed */ | |
1588 | if (!PageReserved(page_array_ptr[count])) | |
1589 | SetPageDirty(page_array_ptr[count]); | |
1590 | page_cache_release(page_array_ptr[count]); | |
1591 | } | |
1592 | } else { | |
1593 | /* free in pages - the data was only read, therefore no update was done | |
1594 | on those pages */ | |
1595 | for (count = 0; count < num_pages; count++) | |
1596 | page_cache_release(page_array_ptr[count]); | |
cd1bb431 | 1597 | } |
cd1bb431 | 1598 | |
d19cf32f AC |
1599 | if (page_array_ptr) |
1600 | /* free the array */ | |
1601 | kfree(page_array_ptr); | |
cd1bb431 | 1602 | |
d19cf32f | 1603 | return 0; |
cd1bb431 MA |
1604 | } |
1605 | ||
1606 | /* | |
1607 | This function raises interrupt to SEP that signals that is has a new | |
1608 | command from HOST | |
1609 | */ | |
1610 | static void sep_send_command_handler() | |
1611 | { | |
d19cf32f | 1612 | unsigned long count; |
cd1bb431 | 1613 | |
d19cf32f | 1614 | dbg("SEP Driver:--------> sep_send_command_handler start\n"); |
d19cf32f | 1615 | sep_set_time(0, 0); |
cd1bb431 | 1616 | |
d19cf32f AC |
1617 | /* flash cache */ |
1618 | flush_cache_all(); | |
cd1bb431 | 1619 | |
d19cf32f AC |
1620 | for (count = 0; count < 12 * 4; count += 4) |
1621 | edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count))); | |
cd1bb431 | 1622 | |
d19cf32f AC |
1623 | /* update counter */ |
1624 | sep_dev->host_to_sep_send_counter++; | |
d19cf32f AC |
1625 | /* send interrupt to SEP */ |
1626 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); | |
d19cf32f | 1627 | dbg("SEP Driver:<-------- sep_send_command_handler end\n"); |
d19cf32f | 1628 | return; |
cd1bb431 MA |
1629 | } |
1630 | ||
1631 | /* | |
1632 | This function raises interrupt to SEPm that signals that is has a | |
1633 | new command from HOST | |
1634 | */ | |
1635 | static void sep_send_reply_command_handler() | |
1636 | { | |
d19cf32f | 1637 | unsigned long count; |
cd1bb431 | 1638 | |
d19cf32f | 1639 | dbg("SEP Driver:--------> sep_send_reply_command_handler start\n"); |
cd1bb431 | 1640 | |
d19cf32f AC |
1641 | /* flash cache */ |
1642 | flush_cache_all(); | |
d19cf32f AC |
1643 | for (count = 0; count < 12 * 4; count += 4) |
1644 | edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep_dev->shared_area_addr + count))); | |
d19cf32f AC |
1645 | /* update counter */ |
1646 | sep_dev->host_to_sep_send_counter++; | |
d19cf32f AC |
1647 | /* send the interrupt to SEP */ |
1648 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep_dev->host_to_sep_send_counter); | |
d19cf32f AC |
1649 | /* update both counters */ |
1650 | sep_dev->host_to_sep_send_counter++; | |
d19cf32f | 1651 | sep_dev->sep_to_host_reply_counter++; |
d19cf32f | 1652 | dbg("SEP Driver:<-------- sep_send_reply_command_handler end\n"); |
cd1bb431 MA |
1653 | } |
1654 | ||
1655 | ||
1656 | ||
1657 | /* | |
1658 | This function handles the allocate data pool memory request | |
1659 | This function returns calculates the physical address of the | |
1660 | allocated memory, and the offset of this area from the mapped address. | |
1661 | Therefore, the FVOs in user space can calculate the exact virtual | |
1662 | address of this allocated memory | |
1663 | */ | |
1664 | static int sep_allocate_data_pool_memory_handler(unsigned long arg) | |
1665 | { | |
d19cf32f | 1666 | int error; |
d19cf32f | 1667 | struct sep_driver_alloc_t command_args; |
cd1bb431 | 1668 | |
d19cf32f | 1669 | dbg("SEP Driver:--------> sep_allocate_data_pool_memory_handler start\n"); |
cd1bb431 | 1670 | |
d19cf32f AC |
1671 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_alloc_t)); |
1672 | if (error) | |
1673 | goto end_function; | |
cd1bb431 | 1674 | |
d19cf32f AC |
1675 | /* allocate memory */ |
1676 | if ((sep_dev->data_pool_bytes_allocated + command_args.num_bytes) > SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { | |
1677 | error = -ENOTTY; | |
1678 | goto end_function; | |
1679 | } | |
1680 | ||
1681 | /* set the virtual and physical address */ | |
1682 | command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep_dev->data_pool_bytes_allocated; | |
1683 | command_args.phys_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep_dev->data_pool_bytes_allocated; | |
cd1bb431 | 1684 | |
d19cf32f AC |
1685 | /* write the memory back to the user space */ |
1686 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_alloc_t)); | |
1687 | if (error) | |
1688 | goto end_function; | |
cd1bb431 | 1689 | |
d19cf32f AC |
1690 | /* set the allocation */ |
1691 | sep_dev->data_pool_bytes_allocated += command_args.num_bytes; | |
cd1bb431 | 1692 | |
f93e4bf9 | 1693 | end_function: |
d19cf32f | 1694 | dbg("SEP Driver:<-------- sep_allocate_data_pool_memory_handler end\n"); |
d19cf32f | 1695 | return error; |
cd1bb431 MA |
1696 | } |
1697 | ||
1698 | /* | |
1699 | This function handles write into allocated data pool command | |
1700 | */ | |
1701 | static int sep_write_into_data_pool_handler(unsigned long arg) | |
1702 | { | |
d19cf32f | 1703 | int error; |
d19cf32f | 1704 | unsigned long virt_address; |
d19cf32f | 1705 | unsigned long app_in_address; |
d19cf32f | 1706 | unsigned long num_bytes; |
d19cf32f | 1707 | unsigned long data_pool_area_addr; |
cd1bb431 | 1708 | |
d19cf32f | 1709 | dbg("SEP Driver:--------> sep_write_into_data_pool_handler start\n"); |
cd1bb431 | 1710 | |
d19cf32f AC |
1711 | /* get the application address */ |
1712 | error = get_user(app_in_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
1713 | if (error) | |
1714 | goto end_function; | |
cd1bb431 | 1715 | |
d19cf32f AC |
1716 | /* get the virtual kernel address address */ |
1717 | error = get_user(virt_address, &(((struct sep_driver_write_t *) arg)->datapool_address)); | |
1718 | if (error) | |
1719 | goto end_function; | |
cd1bb431 | 1720 | |
d19cf32f AC |
1721 | /* get the number of bytes */ |
1722 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
1723 | if (error) | |
1724 | goto end_function; | |
cd1bb431 | 1725 | |
d19cf32f AC |
1726 | /* calculate the start of the data pool */ |
1727 | data_pool_area_addr = sep_dev->shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; | |
cd1bb431 MA |
1728 | |
1729 | ||
d19cf32f AC |
1730 | /* check that the range of the virtual kernel address is correct */ |
1731 | if ((virt_address < data_pool_area_addr) || (virt_address > (data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { | |
1732 | error = -ENOTTY; | |
1733 | goto end_function; | |
1734 | } | |
d19cf32f AC |
1735 | /* copy the application data */ |
1736 | error = copy_from_user((void *) virt_address, (void *) app_in_address, num_bytes); | |
f93e4bf9 | 1737 | end_function: |
d19cf32f | 1738 | dbg("SEP Driver:<-------- sep_write_into_data_pool_handler end\n"); |
d19cf32f | 1739 | return error; |
cd1bb431 MA |
1740 | } |
1741 | ||
1742 | /* | |
1743 | this function handles the read from data pool command | |
1744 | */ | |
1745 | static int sep_read_from_data_pool_handler(unsigned long arg) | |
1746 | { | |
d19cf32f | 1747 | int error; |
d19cf32f AC |
1748 | /* virtual address of dest application buffer */ |
1749 | unsigned long app_out_address; | |
d19cf32f AC |
1750 | /* virtual address of the data pool */ |
1751 | unsigned long virt_address; | |
d19cf32f | 1752 | unsigned long num_bytes; |
d19cf32f | 1753 | unsigned long data_pool_area_addr; |
cd1bb431 | 1754 | |
d19cf32f | 1755 | dbg("SEP Driver:--------> sep_read_from_data_pool_handler start\n"); |
cd1bb431 | 1756 | |
d19cf32f AC |
1757 | /* get the application address */ |
1758 | error = get_user(app_out_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
1759 | if (error) | |
1760 | goto end_function; | |
cd1bb431 | 1761 | |
d19cf32f AC |
1762 | /* get the virtual kernel address address */ |
1763 | error = get_user(virt_address, &(((struct sep_driver_write_t *) arg)->datapool_address)); | |
1764 | if (error) | |
1765 | goto end_function; | |
cd1bb431 | 1766 | |
d19cf32f AC |
1767 | /* get the number of bytes */ |
1768 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
1769 | if (error) | |
1770 | goto end_function; | |
cd1bb431 | 1771 | |
d19cf32f AC |
1772 | /* calculate the start of the data pool */ |
1773 | data_pool_area_addr = sep_dev->shared_area_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 1774 | |
d19cf32f AC |
1775 | /* check that the range of the virtual kernel address is correct */ |
1776 | if ((virt_address < data_pool_area_addr) || (virt_address > (data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES))) { | |
1777 | error = -ENOTTY; | |
1778 | goto end_function; | |
1779 | } | |
cd1bb431 | 1780 | |
d19cf32f AC |
1781 | /* copy the application data */ |
1782 | error = copy_to_user((void *) app_out_address, (void *) virt_address, num_bytes); | |
f93e4bf9 | 1783 | end_function: |
d19cf32f | 1784 | dbg("SEP Driver:<-------- sep_read_from_data_pool_handler end\n"); |
d19cf32f | 1785 | return error; |
cd1bb431 MA |
1786 | } |
1787 | ||
1788 | ||
1789 | /* | |
1790 | this function handles tha request for creation of the DMA table | |
1791 | for the synchronic symmetric operations (AES,DES) | |
1792 | */ | |
1793 | static int sep_create_sync_dma_tables_handler(unsigned long arg) | |
1794 | { | |
d19cf32f | 1795 | int error; |
d19cf32f AC |
1796 | /* command arguments */ |
1797 | struct sep_driver_build_sync_table_t command_args; | |
cd1bb431 | 1798 | |
d19cf32f | 1799 | dbg("SEP Driver:--------> sep_create_sync_dma_tables_handler start\n"); |
cd1bb431 | 1800 | |
d19cf32f AC |
1801 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_sync_table_t)); |
1802 | if (error) | |
1803 | goto end_function; | |
cd1bb431 | 1804 | |
d19cf32f AC |
1805 | edbg("app_in_address is %08lx\n", command_args.app_in_address); |
1806 | edbg("app_out_address is %08lx\n", command_args.app_out_address); | |
1807 | edbg("data_size is %lu\n", command_args.data_in_size); | |
1808 | edbg("block_size is %lu\n", command_args.block_size); | |
1809 | ||
d19cf32f AC |
1810 | /* check if we need to build only input table or input/output */ |
1811 | if (command_args.app_out_address) | |
1812 | /* prepare input and output tables */ | |
1813 | error = sep_prepare_input_output_dma_table(command_args.app_in_address, | |
1814 | command_args.app_out_address, | |
1815 | command_args.data_in_size, | |
1816 | command_args.block_size, | |
1817 | &command_args.in_table_address, | |
1818 | &command_args.out_table_address, &command_args.in_table_num_entries, &command_args.out_table_num_entries, &command_args.table_data_size, command_args.isKernelVirtualAddress); | |
1819 | else | |
1820 | /* prepare input tables */ | |
1821 | error = sep_prepare_input_dma_table(command_args.app_in_address, | |
1822 | command_args.data_in_size, command_args.block_size, &command_args.in_table_address, &command_args.in_table_num_entries, &command_args.table_data_size, command_args.isKernelVirtualAddress); | |
cd1bb431 | 1823 | |
d19cf32f AC |
1824 | if (error) |
1825 | goto end_function; | |
d19cf32f AC |
1826 | /* copy to user */ |
1827 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_build_sync_table_t)); | |
f93e4bf9 | 1828 | end_function: |
d19cf32f | 1829 | dbg("SEP Driver:<-------- sep_create_sync_dma_tables_handler end\n"); |
d19cf32f | 1830 | return error; |
cd1bb431 MA |
1831 | } |
1832 | ||
1833 | /* | |
1834 | this function handles the request for freeing dma table for synhronic actions | |
1835 | */ | |
1836 | int sep_free_dma_table_data_handler() | |
1837 | { | |
d19cf32f | 1838 | dbg("SEP Driver:--------> sep_free_dma_table_data_handler start\n"); |
cd1bb431 | 1839 | |
d19cf32f AC |
1840 | /* free input pages array */ |
1841 | sep_free_dma_pages(sep_dev->in_page_array, sep_dev->in_num_pages, 0); | |
cd1bb431 | 1842 | |
d19cf32f AC |
1843 | /* free output pages array if needed */ |
1844 | if (sep_dev->out_page_array) | |
1845 | sep_free_dma_pages(sep_dev->out_page_array, sep_dev->out_num_pages, 1); | |
cd1bb431 | 1846 | |
d19cf32f AC |
1847 | /* reset all the values */ |
1848 | sep_dev->in_page_array = 0; | |
1849 | sep_dev->out_page_array = 0; | |
1850 | sep_dev->in_num_pages = 0; | |
1851 | sep_dev->out_num_pages = 0; | |
d19cf32f | 1852 | dbg("SEP Driver:<-------- sep_free_dma_table_data_handler end\n"); |
d19cf32f | 1853 | return 0; |
cd1bb431 MA |
1854 | } |
1855 | ||
1856 | /* | |
1857 | this function handles the request to create the DMA tables for flow | |
1858 | */ | |
1859 | static int sep_create_flow_dma_tables_handler(unsigned long arg) | |
1860 | { | |
d19cf32f | 1861 | int error; |
d19cf32f | 1862 | struct sep_driver_build_flow_table_t command_args; |
d19cf32f AC |
1863 | /* first table - output */ |
1864 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1865 | /* dma table data */ |
1866 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1867 | /* pointer to the info entry of the previuos DMA table */ |
1868 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
d19cf32f AC |
1869 | /* pointer to the flow data strucutre */ |
1870 | struct sep_flow_context_t *flow_context_ptr; | |
cd1bb431 | 1871 | |
d19cf32f | 1872 | dbg("SEP Driver:--------> sep_create_flow_dma_tables_handler start\n"); |
cd1bb431 | 1873 | |
d19cf32f AC |
1874 | /* init variables */ |
1875 | prev_info_entry_ptr = 0; | |
1876 | first_table_data.physical_address = 0xffffffff; | |
cd1bb431 | 1877 | |
d19cf32f AC |
1878 | /* find the free structure for flow data */ |
1879 | error = sep_find_flow_context(SEP_FREE_FLOW_ID, &flow_context_ptr); | |
1880 | if (error) | |
1881 | goto end_function; | |
cd1bb431 | 1882 | |
d19cf32f AC |
1883 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_flow_table_t)); |
1884 | if (error) | |
1885 | goto end_function; | |
cd1bb431 | 1886 | |
d19cf32f AC |
1887 | /* create flow tables */ |
1888 | error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, command_args.virt_buff_data_addr, flow_context_ptr, &first_table_data, &last_table_data, command_args.isKernelVirtualAddress); | |
1889 | if (error) | |
1890 | goto end_function_with_error; | |
cd1bb431 | 1891 | |
d19cf32f AC |
1892 | /* check if flow is static */ |
1893 | if (!command_args.flow_type) | |
1894 | /* point the info entry of the last to the info entry of the first */ | |
1895 | last_table_data = first_table_data; | |
cd1bb431 | 1896 | |
d19cf32f AC |
1897 | /* set output params */ |
1898 | command_args.first_table_addr = first_table_data.physical_address; | |
1899 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1900 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1901 | |
d19cf32f AC |
1902 | /* send the parameters to user application */ |
1903 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_build_flow_table_t)); | |
1904 | if (error) | |
1905 | goto end_function_with_error; | |
cd1bb431 | 1906 | |
d19cf32f AC |
1907 | /* all the flow created - update the flow entry with temp id */ |
1908 | flow_context_ptr->flow_id = SEP_TEMP_FLOW_ID; | |
cd1bb431 | 1909 | |
d19cf32f AC |
1910 | /* set the processing tables data in the context */ |
1911 | if (command_args.input_output_flag == SEP_DRIVER_IN_FLAG) | |
1912 | flow_context_ptr->input_tables_in_process = first_table_data; | |
1913 | else | |
1914 | flow_context_ptr->output_tables_in_process = first_table_data; | |
cd1bb431 | 1915 | |
d19cf32f | 1916 | goto end_function; |
cd1bb431 | 1917 | |
f93e4bf9 | 1918 | end_function_with_error: |
d19cf32f AC |
1919 | /* free the allocated tables */ |
1920 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1921 | end_function: |
d19cf32f | 1922 | dbg("SEP Driver:<-------- sep_create_flow_dma_tables_handler end\n"); |
d19cf32f | 1923 | return error; |
cd1bb431 MA |
1924 | } |
1925 | ||
1926 | /* | |
1927 | this functio n handles add tables to flow | |
1928 | */ | |
1929 | static int sep_add_flow_tables_handler(unsigned long arg) | |
1930 | { | |
d19cf32f | 1931 | int error; |
d19cf32f | 1932 | unsigned long num_entries; |
d19cf32f | 1933 | struct sep_driver_add_flow_table_t command_args; |
d19cf32f | 1934 | struct sep_flow_context_t *flow_context_ptr; |
d19cf32f AC |
1935 | /* first dma table data */ |
1936 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1937 | /* last dma table data */ |
1938 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1939 | /* pointer to the info entry of the current DMA table */ |
1940 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1941 | |
d19cf32f | 1942 | dbg("SEP Driver:--------> sep_add_flow_tables_handler start\n"); |
cd1bb431 | 1943 | |
d19cf32f AC |
1944 | /* get input parameters */ |
1945 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_flow_table_t)); | |
1946 | if (error) | |
1947 | goto end_function; | |
cd1bb431 | 1948 | |
d19cf32f AC |
1949 | /* find the flow structure for the flow id */ |
1950 | error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); | |
1951 | if (error) | |
1952 | goto end_function; | |
cd1bb431 | 1953 | |
d19cf32f AC |
1954 | /* prepare the flow dma tables */ |
1955 | error = sep_prepare_flow_dma_tables(command_args.num_virtual_buffers, command_args.virt_buff_data_addr, flow_context_ptr, &first_table_data, &last_table_data, command_args.isKernelVirtualAddress); | |
1956 | if (error) | |
1957 | goto end_function_with_error; | |
cd1bb431 | 1958 | |
d19cf32f AC |
1959 | /* now check if there is already an existing add table for this flow */ |
1960 | if (command_args.inputOutputFlag == SEP_DRIVER_IN_FLAG) { | |
1961 | /* this buffer was for input buffers */ | |
1962 | if (flow_context_ptr->input_tables_flag) { | |
1963 | /* add table already exists - add the new tables to the end | |
1964 | of the previous */ | |
1965 | num_entries = (flow_context_ptr->last_input_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1966 | ||
1967 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1968 | (flow_context_ptr->last_input_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1969 | ||
1970 | /* connect to list of tables */ | |
1971 | *info_entry_ptr = first_table_data; | |
1972 | ||
1973 | /* set the first table data */ | |
1974 | first_table_data = flow_context_ptr->first_input_table; | |
1975 | } else { | |
1976 | /* set the input flag */ | |
1977 | flow_context_ptr->input_tables_flag = 1; | |
1978 | ||
1979 | /* set the first table data */ | |
1980 | flow_context_ptr->first_input_table = first_table_data; | |
1981 | } | |
1982 | /* set the last table data */ | |
1983 | flow_context_ptr->last_input_table = last_table_data; | |
1984 | } else { /* this is output tables */ | |
1985 | ||
1986 | /* this buffer was for input buffers */ | |
1987 | if (flow_context_ptr->output_tables_flag) { | |
1988 | /* add table already exists - add the new tables to | |
1989 | the end of the previous */ | |
1990 | num_entries = (flow_context_ptr->last_output_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1991 | ||
1992 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1993 | (flow_context_ptr->last_output_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1994 | ||
1995 | /* connect to list of tables */ | |
1996 | *info_entry_ptr = first_table_data; | |
1997 | ||
1998 | /* set the first table data */ | |
1999 | first_table_data = flow_context_ptr->first_output_table; | |
2000 | } else { | |
2001 | /* set the input flag */ | |
2002 | flow_context_ptr->output_tables_flag = 1; | |
2003 | ||
2004 | /* set the first table data */ | |
2005 | flow_context_ptr->first_output_table = first_table_data; | |
2006 | } | |
2007 | /* set the last table data */ | |
2008 | flow_context_ptr->last_output_table = last_table_data; | |
cd1bb431 | 2009 | } |
cd1bb431 | 2010 | |
d19cf32f AC |
2011 | /* set output params */ |
2012 | command_args.first_table_addr = first_table_data.physical_address; | |
2013 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
2014 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 2015 | |
d19cf32f AC |
2016 | /* send the parameters to user application */ |
2017 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_add_flow_table_t)); | |
f93e4bf9 | 2018 | end_function_with_error: |
d19cf32f AC |
2019 | /* free the allocated tables */ |
2020 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 2021 | end_function: |
d19cf32f | 2022 | dbg("SEP Driver:<-------- sep_add_flow_tables_handler end\n"); |
d19cf32f | 2023 | return error; |
cd1bb431 MA |
2024 | } |
2025 | ||
2026 | /* | |
2027 | this function add the flow add message to the specific flow | |
2028 | */ | |
2029 | static int sep_add_flow_tables_message_handler(unsigned long arg) | |
2030 | { | |
d19cf32f | 2031 | int error; |
d19cf32f | 2032 | struct sep_driver_add_message_t command_args; |
d19cf32f | 2033 | struct sep_flow_context_t *flow_context_ptr; |
cd1bb431 | 2034 | |
d19cf32f | 2035 | dbg("SEP Driver:--------> sep_add_flow_tables_message_handler start\n"); |
cd1bb431 | 2036 | |
d19cf32f AC |
2037 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_message_t)); |
2038 | if (error) | |
2039 | goto end_function; | |
cd1bb431 | 2040 | |
d19cf32f AC |
2041 | /* check input */ |
2042 | if (command_args.message_size_in_bytes > SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES) { | |
2043 | error = -ENOMEM; | |
2044 | goto end_function; | |
2045 | } | |
cd1bb431 | 2046 | |
d19cf32f AC |
2047 | /* find the flow context */ |
2048 | error = sep_find_flow_context(command_args.flow_id, &flow_context_ptr); | |
2049 | if (error) | |
2050 | goto end_function; | |
cd1bb431 | 2051 | |
d19cf32f AC |
2052 | /* copy the message into context */ |
2053 | flow_context_ptr->message_size_in_bytes = command_args.message_size_in_bytes; | |
d19cf32f | 2054 | error = copy_from_user(flow_context_ptr->message, (void *) command_args.message_address, command_args.message_size_in_bytes); |
f93e4bf9 | 2055 | end_function: |
d19cf32f | 2056 | dbg("SEP Driver:<-------- sep_add_flow_tables_message_handler end\n"); |
d19cf32f | 2057 | return error; |
cd1bb431 MA |
2058 | } |
2059 | ||
2060 | ||
2061 | /* | |
2062 | this function returns the physical and virtual addresses of the static pool | |
2063 | */ | |
2064 | static int sep_get_static_pool_addr_handler(unsigned long arg) | |
2065 | { | |
d19cf32f | 2066 | int error; |
d19cf32f | 2067 | struct sep_driver_static_pool_addr_t command_args; |
cd1bb431 | 2068 | |
d19cf32f | 2069 | dbg("SEP Driver:--------> sep_get_static_pool_addr_handler start\n"); |
cd1bb431 | 2070 | |
d19cf32f AC |
2071 | /*prepare the output parameters in the struct */ |
2072 | command_args.physical_static_address = sep_dev->phys_shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
2073 | command_args.virtual_static_address = sep_dev->shared_area_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 2074 | |
d19cf32f | 2075 | edbg("SEP Driver:physical_static_address is %08lx, virtual_static_address %08lx\n", command_args.physical_static_address, command_args.virtual_static_address); |
cd1bb431 | 2076 | |
d19cf32f AC |
2077 | /* send the parameters to user application */ |
2078 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_static_pool_addr_t)); | |
d19cf32f | 2079 | dbg("SEP Driver:<-------- sep_get_static_pool_addr_handler end\n"); |
d19cf32f | 2080 | return error; |
cd1bb431 MA |
2081 | } |
2082 | ||
2083 | /* | |
2084 | this address gets the offset of the physical address from the start | |
2085 | of the mapped area | |
2086 | */ | |
2087 | static int sep_get_physical_mapped_offset_handler(unsigned long arg) | |
2088 | { | |
d19cf32f | 2089 | int error; |
d19cf32f | 2090 | struct sep_driver_get_mapped_offset_t command_args; |
cd1bb431 | 2091 | |
d19cf32f | 2092 | dbg("SEP Driver:--------> sep_get_physical_mapped_offset_handler start\n"); |
cd1bb431 | 2093 | |
d19cf32f AC |
2094 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_get_mapped_offset_t)); |
2095 | if (error) | |
2096 | goto end_function; | |
cd1bb431 | 2097 | |
d19cf32f AC |
2098 | if (command_args.physical_address < sep_dev->phys_shared_area_addr) { |
2099 | error = -ENOTTY; | |
2100 | goto end_function; | |
2101 | } | |
cd1bb431 | 2102 | |
d19cf32f AC |
2103 | /*prepare the output parameters in the struct */ |
2104 | command_args.offset = command_args.physical_address - sep_dev->phys_shared_area_addr; | |
cd1bb431 | 2105 | |
d19cf32f | 2106 | edbg("SEP Driver:physical_address is %08lx, offset is %lu\n", command_args.physical_address, command_args.offset); |
cd1bb431 | 2107 | |
d19cf32f AC |
2108 | /* send the parameters to user application */ |
2109 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_get_mapped_offset_t)); | |
f93e4bf9 | 2110 | end_function: |
d19cf32f | 2111 | dbg("SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n"); |
d19cf32f | 2112 | return error; |
cd1bb431 MA |
2113 | } |
2114 | ||
2115 | ||
2116 | /* | |
2117 | ? | |
2118 | */ | |
2119 | static int sep_start_handler(void) | |
2120 | { | |
d19cf32f | 2121 | unsigned long reg_val; |
f93e4bf9 | 2122 | unsigned long error = 0; |
cd1bb431 | 2123 | |
d19cf32f | 2124 | dbg("SEP Driver:--------> sep_start_handler start\n"); |
cd1bb431 | 2125 | |
d19cf32f | 2126 | /* wait in polling for message from SEP */ |
f93e4bf9 | 2127 | do |
d19cf32f | 2128 | reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2129 | while (!reg_val); |
cd1bb431 | 2130 | |
d19cf32f | 2131 | /* check the value */ |
43e8c4a3 | 2132 | if (reg_val == 0x1) |
d19cf32f AC |
2133 | /* fatal error - read erro status from GPRO */ |
2134 | error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
d19cf32f | 2135 | dbg("SEP Driver:<-------- sep_start_handler end\n"); |
d19cf32f | 2136 | return error; |
cd1bb431 MA |
2137 | } |
2138 | ||
2139 | /* | |
2140 | this function handles the request for SEP initialization | |
2141 | */ | |
2142 | static int sep_init_handler(unsigned long arg) | |
2143 | { | |
d19cf32f | 2144 | unsigned long message_word; |
d19cf32f | 2145 | unsigned long *message_ptr; |
d19cf32f | 2146 | struct sep_driver_init_t command_args; |
d19cf32f | 2147 | unsigned long counter; |
d19cf32f | 2148 | unsigned long error; |
d19cf32f | 2149 | unsigned long reg_val; |
cd1bb431 | 2150 | |
d19cf32f | 2151 | dbg("SEP Driver:--------> sep_init_handler start\n"); |
d19cf32f | 2152 | error = 0; |
cd1bb431 | 2153 | |
d19cf32f | 2154 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_init_t)); |
cd1bb431 | 2155 | |
d19cf32f | 2156 | dbg("SEP Driver:--------> sep_init_handler - finished copy_from_user \n"); |
cd1bb431 | 2157 | |
d19cf32f AC |
2158 | if (error) |
2159 | goto end_function; | |
cd1bb431 | 2160 | |
d19cf32f AC |
2161 | /* PATCH - configure the DMA to single -burst instead of multi-burst */ |
2162 | /*sep_configure_dma_burst(); */ | |
cd1bb431 | 2163 | |
d19cf32f | 2164 | dbg("SEP Driver:--------> sep_init_handler - finished sep_configure_dma_burst \n"); |
cd1bb431 | 2165 | |
d19cf32f | 2166 | message_ptr = (unsigned long *) command_args.message_addr; |
cd1bb431 | 2167 | |
d19cf32f AC |
2168 | /* set the base address of the SRAM */ |
2169 | sep_write_reg(sep_dev, HW_SRAM_ADDR_REG_ADDR, HW_CC_SRAM_BASE_ADDRESS); | |
cd1bb431 | 2170 | |
d19cf32f AC |
2171 | for (counter = 0; counter < command_args.message_size_in_words; counter++, message_ptr++) { |
2172 | get_user(message_word, message_ptr); | |
d19cf32f AC |
2173 | /* write data to SRAM */ |
2174 | sep_write_reg(sep_dev, HW_SRAM_DATA_REG_ADDR, message_word); | |
d19cf32f | 2175 | edbg("SEP Driver:message_word is %lu\n", message_word); |
cd1bb431 | 2176 | /* wait for write complete */ |
d19cf32f AC |
2177 | sep_wait_sram_write(sep_dev); |
2178 | } | |
d19cf32f | 2179 | dbg("SEP Driver:--------> sep_init_handler - finished getting messages from user space\n"); |
d19cf32f AC |
2180 | /* signal SEP */ |
2181 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1); | |
cd1bb431 | 2182 | |
f93e4bf9 | 2183 | do |
d19cf32f | 2184 | reg_val = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2185 | while (!(reg_val & 0xFFFFFFFD)); |
cd1bb431 | 2186 | |
d19cf32f | 2187 | dbg("SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n"); |
cd1bb431 | 2188 | |
d19cf32f AC |
2189 | /* check the value */ |
2190 | if (reg_val == 0x1) { | |
2191 | edbg("SEP Driver:init failed\n"); | |
cd1bb431 | 2192 | |
d19cf32f AC |
2193 | error = sep_read_reg(sep_dev, 0x8060); |
2194 | edbg("SEP Driver:sw monitor is %lu\n", error); | |
cd1bb431 | 2195 | |
d19cf32f AC |
2196 | /* fatal error - read erro status from GPRO */ |
2197 | error = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
2198 | edbg("SEP Driver:error is %lu\n", error); | |
d19cf32f | 2199 | } |
f93e4bf9 | 2200 | end_function: |
d19cf32f | 2201 | dbg("SEP Driver:<-------- sep_init_handler end\n"); |
d19cf32f | 2202 | return error; |
cd1bb431 MA |
2203 | |
2204 | } | |
2205 | ||
2206 | /* | |
2207 | this function handles the request cache and resident reallocation | |
2208 | */ | |
2209 | static int sep_realloc_cache_resident_handler(unsigned long arg) | |
2210 | { | |
d19cf32f | 2211 | int error; |
d19cf32f | 2212 | unsigned long phys_cache_address; |
d19cf32f | 2213 | unsigned long phys_resident_address; |
d19cf32f | 2214 | struct sep_driver_realloc_cache_resident_t command_args; |
cd1bb431 | 2215 | |
d19cf32f AC |
2216 | /* copy the data */ |
2217 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_realloc_cache_resident_t)); | |
2218 | if (error) | |
2219 | goto end_function; | |
cd1bb431 | 2220 | |
d19cf32f AC |
2221 | /* copy cache and resident to the their intended locations */ |
2222 | error = sep_copy_cache_resident_to_area(command_args.cache_addr, command_args.cache_size_in_bytes, command_args.resident_addr, command_args.resident_size_in_bytes, &phys_cache_address, &phys_resident_address); | |
2223 | if (error) | |
2224 | goto end_function; | |
cd1bb431 | 2225 | |
d19cf32f AC |
2226 | /* lock the area (if needed) */ |
2227 | sep_lock_cache_resident_area(); | |
cd1bb431 | 2228 | |
d19cf32f | 2229 | command_args.new_base_addr = sep_dev->phys_shared_area_addr; |
cd1bb431 | 2230 | |
d19cf32f AC |
2231 | /* find the new base address according to the lowest address between |
2232 | cache, resident and shared area */ | |
2233 | if (phys_resident_address < command_args.new_base_addr) | |
2234 | command_args.new_base_addr = phys_resident_address; | |
2235 | if (phys_cache_address < command_args.new_base_addr) | |
2236 | command_args.new_base_addr = phys_cache_address; | |
cd1bb431 | 2237 | |
d19cf32f AC |
2238 | /* set the return parameters */ |
2239 | command_args.new_cache_addr = phys_cache_address; | |
2240 | command_args.new_resident_addr = phys_resident_address; | |
cd1bb431 | 2241 | |
d19cf32f AC |
2242 | /* set the new shared area */ |
2243 | command_args.new_shared_area_addr = sep_dev->phys_shared_area_addr; | |
cd1bb431 | 2244 | |
d19cf32f AC |
2245 | edbg("SEP Driver:command_args.new_shared_area_addr is %08lx\n", command_args.new_shared_area_addr); |
2246 | edbg("SEP Driver:command_args.new_base_addr is %08lx\n", command_args.new_base_addr); | |
2247 | edbg("SEP Driver:command_args.new_resident_addr is %08lx\n", command_args.new_resident_addr); | |
2248 | edbg("SEP Driver:command_args.new_cache_addr is %08lx\n", command_args.new_cache_addr); | |
cd1bb431 | 2249 | |
d19cf32f AC |
2250 | /* return to user */ |
2251 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_realloc_cache_resident_t)); | |
f93e4bf9 | 2252 | end_function: |
d19cf32f | 2253 | return error; |
cd1bb431 MA |
2254 | } |
2255 | ||
2256 | /* | |
2257 | this function handles the request for get time | |
2258 | */ | |
2259 | static int sep_get_time_handler(unsigned long arg) | |
2260 | { | |
d19cf32f | 2261 | int error; |
d19cf32f | 2262 | struct sep_driver_get_time_t command_args; |
cd1bb431 | 2263 | |
d19cf32f | 2264 | error = sep_set_time(&command_args.time_physical_address, &command_args.time_value); |
d19cf32f | 2265 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_get_time_t)); |
d19cf32f | 2266 | return error; |
cd1bb431 MA |
2267 | |
2268 | } | |
2269 | ||
2270 | /* | |
2271 | This api handles the setting of API mode to blocking or non-blocking | |
2272 | */ | |
2273 | static int sep_set_api_mode_handler(unsigned long arg) | |
2274 | { | |
d19cf32f | 2275 | int error; |
d19cf32f | 2276 | unsigned long mode_flag; |
cd1bb431 | 2277 | |
d19cf32f | 2278 | dbg("SEP Driver:--------> sep_set_api_mode_handler start\n"); |
cd1bb431 | 2279 | |
d19cf32f AC |
2280 | error = get_user(mode_flag, &(((struct sep_driver_set_api_mode_t *) arg)->mode)); |
2281 | if (error) | |
2282 | goto end_function; | |
cd1bb431 | 2283 | |
d19cf32f AC |
2284 | /* set the global flag */ |
2285 | sep_dev->block_mode_flag = mode_flag; | |
f93e4bf9 | 2286 | end_function: |
d19cf32f | 2287 | dbg("SEP Driver:<-------- sep_set_api_mode_handler end\n"); |
d19cf32f | 2288 | return error; |
cd1bb431 MA |
2289 | } |
2290 | ||
2291 | /* | |
2292 | This API handles the end transaction request | |
2293 | */ | |
2294 | static int sep_end_transaction_handler(unsigned long arg) | |
2295 | { | |
d19cf32f | 2296 | dbg("SEP Driver:--------> sep_end_transaction_handler start\n"); |
cd1bb431 | 2297 | |
d19cf32f AC |
2298 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
2299 | /* close IMR */ | |
2300 | sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, 0x7FFF); | |
cd1bb431 | 2301 | |
d19cf32f AC |
2302 | /* release IRQ line */ |
2303 | free_irq(SEP_DIRVER_IRQ_NUM, &sep_dev->reg_base_address); | |
cd1bb431 | 2304 | |
d19cf32f AC |
2305 | /* lock the sep mutex */ |
2306 | mutex_unlock(&sep_mutex); | |
cd1bb431 MA |
2307 | #endif |
2308 | ||
d19cf32f | 2309 | dbg("SEP Driver:<-------- sep_end_transaction_handler end\n"); |
cd1bb431 | 2310 | |
d19cf32f | 2311 | return 0; |
cd1bb431 MA |
2312 | } |
2313 | ||
2314 | /* handler for flow done interrupt */ | |
d19cf32f | 2315 | static void sep_flow_done_handler(struct work_struct *work) |
cd1bb431 | 2316 | { |
d19cf32f | 2317 | struct sep_flow_context_t *flow_data_ptr; |
cd1bb431 | 2318 | |
d19cf32f AC |
2319 | /* obtain the mutex */ |
2320 | mutex_lock(&sep_mutex); | |
cd1bb431 | 2321 | |
d19cf32f AC |
2322 | /* get the pointer to context */ |
2323 | flow_data_ptr = (struct sep_flow_context_t *) work; | |
cd1bb431 | 2324 | |
d19cf32f AC |
2325 | /* free all the current input tables in sep */ |
2326 | sep_deallocated_flow_tables(&flow_data_ptr->input_tables_in_process); | |
cd1bb431 | 2327 | |
d19cf32f AC |
2328 | /* free all the current tables output tables in SEP (if needed) */ |
2329 | if (flow_data_ptr->output_tables_in_process.physical_address != 0xffffffff) | |
2330 | sep_deallocated_flow_tables(&flow_data_ptr->output_tables_in_process); | |
cd1bb431 | 2331 | |
d19cf32f AC |
2332 | /* check if we have additional tables to be sent to SEP only input |
2333 | flag may be checked */ | |
2334 | if (flow_data_ptr->input_tables_flag) { | |
2335 | /* copy the message to the shared RAM and signal SEP */ | |
2336 | memcpy((void *) flow_data_ptr->message, (void *) sep_dev->shared_area_addr, flow_data_ptr->message_size_in_bytes); | |
cd1bb431 | 2337 | |
d19cf32f AC |
2338 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR2_REG_ADDR, 0x2); |
2339 | } | |
2340 | mutex_unlock(&sep_mutex); | |
cd1bb431 MA |
2341 | } |
2342 | ||
2343 | ||
2344 | /* | |
2345 | This function creates a list of tables for flow and returns the data for | |
2346 | the first and last tables of the list | |
2347 | */ | |
2348 | static int sep_prepare_flow_dma_tables(unsigned long num_virtual_buffers, | |
d19cf32f | 2349 | unsigned long first_buff_addr, struct sep_flow_context_t *flow_data_ptr, struct sep_lli_entry_t *first_table_data_ptr, struct sep_lli_entry_t *last_table_data_ptr, bool isKernelVirtualAddress) |
cd1bb431 | 2350 | { |
d19cf32f | 2351 | int error; |
d19cf32f | 2352 | unsigned long virt_buff_addr; |
d19cf32f | 2353 | unsigned long virt_buff_size; |
d19cf32f | 2354 | struct sep_lli_entry_t table_data; |
d19cf32f | 2355 | struct sep_lli_entry_t *info_entry_ptr; |
d19cf32f | 2356 | struct sep_lli_entry_t *prev_info_entry_ptr; |
d19cf32f | 2357 | unsigned long i; |
cd1bb431 | 2358 | |
d19cf32f AC |
2359 | /* init vars */ |
2360 | error = 0; | |
2361 | prev_info_entry_ptr = 0; | |
2362 | ||
2363 | /* init the first table to default */ | |
2364 | table_data.physical_address = 0xffffffff; | |
2365 | first_table_data_ptr->physical_address = 0xffffffff; | |
2366 | table_data.block_size = 0; | |
2367 | ||
2368 | for (i = 0; i < num_virtual_buffers; i++) { | |
2369 | /* get the virtual buffer address */ | |
2370 | error = get_user(virt_buff_addr, &first_buff_addr); | |
2371 | if (error) | |
2372 | goto end_function; | |
2373 | ||
2374 | /* get the virtual buffer size */ | |
2375 | first_buff_addr++; | |
2376 | error = get_user(virt_buff_size, &first_buff_addr); | |
2377 | if (error) | |
2378 | goto end_function; | |
2379 | ||
2380 | /* advance the address to point to the next pair of address|size */ | |
2381 | first_buff_addr++; | |
2382 | ||
2383 | /* now prepare the one flow LLI table from the data */ | |
2384 | error = sep_prepare_one_flow_dma_table(virt_buff_addr, virt_buff_size, &table_data, &info_entry_ptr, flow_data_ptr, isKernelVirtualAddress); | |
2385 | if (error) | |
2386 | goto end_function; | |
2387 | ||
2388 | if (i == 0) { | |
2389 | /* if this is the first table - save it to return to the user | |
2390 | application */ | |
2391 | *first_table_data_ptr = table_data; | |
2392 | ||
2393 | /* set the pointer to info entry */ | |
2394 | prev_info_entry_ptr = info_entry_ptr; | |
2395 | } else { | |
2396 | /* not first table - the previous table info entry should | |
2397 | be updated */ | |
2398 | prev_info_entry_ptr->block_size = (0x1 << SEP_INT_FLAG_OFFSET_IN_BITS) | (table_data.block_size); | |
2399 | ||
2400 | /* set the pointer to info entry */ | |
2401 | prev_info_entry_ptr = info_entry_ptr; | |
2402 | } | |
cd1bb431 | 2403 | } |
cd1bb431 | 2404 | |
d19cf32f AC |
2405 | /* set the last table data */ |
2406 | *last_table_data_ptr = table_data; | |
f93e4bf9 | 2407 | end_function: |
d19cf32f | 2408 | return error; |
cd1bb431 MA |
2409 | } |
2410 | ||
2411 | ||
2412 | /* | |
2413 | This function creates one DMA table for flow and returns its data, | |
2414 | and pointer to its info entry | |
2415 | */ | |
d19cf32f | 2416 | static int sep_prepare_one_flow_dma_table(unsigned long virt_buff_addr, unsigned long virt_buff_size, struct sep_lli_entry_t *table_data, struct sep_lli_entry_t **info_entry_ptr, struct sep_flow_context_t *flow_data_ptr, bool isKernelVirtualAddress) |
cd1bb431 | 2417 | { |
d19cf32f | 2418 | int error; |
d19cf32f AC |
2419 | /* the range in pages */ |
2420 | unsigned long lli_array_size; | |
d19cf32f | 2421 | struct sep_lli_entry_t *lli_array; |
d19cf32f | 2422 | struct sep_lli_entry_t *flow_dma_table_entry_ptr; |
d19cf32f | 2423 | unsigned long *start_dma_table_ptr; |
d19cf32f AC |
2424 | /* total table data counter */ |
2425 | unsigned long dma_table_data_count; | |
f93e4bf9 | 2426 | /* pointer that will keep the pointer to the pages of the virtual buffer */ |
d19cf32f | 2427 | struct page **page_array_ptr; |
d19cf32f | 2428 | unsigned long entry_count; |
cd1bb431 | 2429 | |
d19cf32f AC |
2430 | /* find the space for the new table */ |
2431 | error = sep_find_free_flow_dma_table_space(&start_dma_table_ptr); | |
2432 | if (error) | |
2433 | goto end_function; | |
cd1bb431 | 2434 | |
d19cf32f AC |
2435 | /* check if the pages are in Kernel Virtual Address layout */ |
2436 | if (isKernelVirtualAddress == true) | |
2437 | /* lock kernel buffer in the memory */ | |
2438 | error = sep_lock_kernel_pages(virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); | |
2439 | else | |
2440 | /* lock user buffer in the memory */ | |
2441 | error = sep_lock_user_pages(virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); | |
2442 | ||
2443 | if (error) | |
2444 | goto end_function; | |
cd1bb431 | 2445 | |
d19cf32f AC |
2446 | /* set the pointer to page array at the beginning of table - this table is |
2447 | now considered taken */ | |
2448 | *start_dma_table_ptr = lli_array_size; | |
cd1bb431 | 2449 | |
d19cf32f AC |
2450 | /* point to the place of the pages pointers of the table */ |
2451 | start_dma_table_ptr++; | |
cd1bb431 | 2452 | |
d19cf32f AC |
2453 | /* set the pages pointer */ |
2454 | *start_dma_table_ptr = (unsigned long) page_array_ptr; | |
cd1bb431 | 2455 | |
d19cf32f AC |
2456 | /* set the pointer to the first entry */ |
2457 | flow_dma_table_entry_ptr = (struct sep_lli_entry_t *) (++start_dma_table_ptr); | |
cd1bb431 | 2458 | |
d19cf32f AC |
2459 | /* now create the entries for table */ |
2460 | for (dma_table_data_count = entry_count = 0; entry_count < lli_array_size; entry_count++) { | |
2461 | flow_dma_table_entry_ptr->physical_address = lli_array[entry_count].physical_address; | |
cd1bb431 | 2462 | |
d19cf32f | 2463 | flow_dma_table_entry_ptr->block_size = lli_array[entry_count].block_size; |
cd1bb431 | 2464 | |
d19cf32f AC |
2465 | /* set the total data of a table */ |
2466 | dma_table_data_count += lli_array[entry_count].block_size; | |
cd1bb431 | 2467 | |
d19cf32f AC |
2468 | flow_dma_table_entry_ptr++; |
2469 | } | |
cd1bb431 | 2470 | |
d19cf32f AC |
2471 | /* set the physical address */ |
2472 | table_data->physical_address = virt_to_phys(start_dma_table_ptr); | |
cd1bb431 | 2473 | |
d19cf32f AC |
2474 | /* set the num_entries and total data size */ |
2475 | table_data->block_size = ((lli_array_size + 1) << SEP_NUM_ENTRIES_OFFSET_IN_BITS) | (dma_table_data_count); | |
cd1bb431 | 2476 | |
d19cf32f AC |
2477 | /* set the info entry */ |
2478 | flow_dma_table_entry_ptr->physical_address = 0xffffffff; | |
2479 | flow_dma_table_entry_ptr->block_size = 0; | |
cd1bb431 | 2480 | |
d19cf32f AC |
2481 | /* set the pointer to info entry */ |
2482 | *info_entry_ptr = flow_dma_table_entry_ptr; | |
cd1bb431 | 2483 | |
d19cf32f AC |
2484 | /* the array of the lli entries */ |
2485 | kfree(lli_array); | |
f93e4bf9 | 2486 | end_function: |
d19cf32f | 2487 | return error; |
cd1bb431 MA |
2488 | } |
2489 | ||
2490 | ||
2491 | /* | |
2492 | This function returns pointer to the flow data structure | |
f93e4bf9 | 2493 | that contains the given id |
cd1bb431 | 2494 | */ |
d19cf32f | 2495 | static int sep_find_flow_context(unsigned long flow_id, struct sep_flow_context_t **flow_data_ptr) |
cd1bb431 | 2496 | { |
d19cf32f | 2497 | unsigned long count; |
f93e4bf9 | 2498 | int error = 0; |
d19cf32f AC |
2499 | |
2500 | /* | |
2501 | always search for flow with id default first - in case we | |
2502 | already started working on the flow there can be no situation | |
2503 | when 2 flows are with default flag | |
2504 | */ | |
2505 | for (count = 0; count < SEP_DRIVER_NUM_FLOWS; count++) { | |
2506 | if (sep_dev->flows_data_array[count].flow_id == flow_id) { | |
2507 | *flow_data_ptr = &sep_dev->flows_data_array[count]; | |
2508 | break; | |
2509 | } | |
cd1bb431 | 2510 | } |
cd1bb431 | 2511 | |
d19cf32f AC |
2512 | if (count == SEP_DRIVER_NUM_FLOWS) |
2513 | /* no flow found */ | |
2514 | error = -ENOMEM; | |
cd1bb431 | 2515 | |
d19cf32f | 2516 | return error; |
cd1bb431 MA |
2517 | } |
2518 | ||
2519 | /* | |
2520 | this function find a space for the new flow dma table | |
2521 | */ | |
d19cf32f | 2522 | static int sep_find_free_flow_dma_table_space(unsigned long **table_address_ptr) |
cd1bb431 | 2523 | { |
f93e4bf9 | 2524 | int error = 0; |
d19cf32f AC |
2525 | /* pointer to the id field of the flow dma table */ |
2526 | unsigned long *start_table_ptr; | |
d19cf32f | 2527 | unsigned long flow_dma_area_start_addr; |
d19cf32f | 2528 | unsigned long flow_dma_area_end_addr; |
d19cf32f AC |
2529 | /* maximum table size in words */ |
2530 | unsigned long table_size_in_words; | |
cd1bb431 | 2531 | |
d19cf32f AC |
2532 | /* find the start address of the flow DMA table area */ |
2533 | flow_dma_area_start_addr = sep_dev->shared_area_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 2534 | |
d19cf32f AC |
2535 | /* set end address of the flow table area */ |
2536 | flow_dma_area_end_addr = flow_dma_area_start_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES; | |
cd1bb431 | 2537 | |
d19cf32f AC |
2538 | /* set table size in words */ |
2539 | table_size_in_words = SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE * (sizeof(struct sep_lli_entry_t) / sizeof(long)) + 2; | |
cd1bb431 | 2540 | |
d19cf32f AC |
2541 | /* set the pointer to the start address of DMA area */ |
2542 | start_table_ptr = (unsigned long *) flow_dma_area_start_addr; | |
cd1bb431 | 2543 | |
d19cf32f AC |
2544 | /* find the space for the next table */ |
2545 | while (((*start_table_ptr & 0x7FFFFFFF) != 0) && ((unsigned long) start_table_ptr < flow_dma_area_end_addr)) | |
2546 | start_table_ptr += table_size_in_words; | |
cd1bb431 | 2547 | |
d19cf32f AC |
2548 | /* check if we reached the end of floa tables area */ |
2549 | if ((unsigned long) start_table_ptr >= flow_dma_area_end_addr) | |
2550 | error = -1; | |
2551 | else | |
2552 | *table_address_ptr = start_table_ptr; | |
cd1bb431 | 2553 | |
d19cf32f | 2554 | return error; |
cd1bb431 MA |
2555 | } |
2556 | ||
2557 | /* | |
2558 | this function goes over all the flow tables connected to the given | |
2559 | table and deallocate them | |
2560 | */ | |
2561 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr) | |
2562 | { | |
f93e4bf9 | 2563 | /* id pointer */ |
d19cf32f | 2564 | unsigned long *table_ptr; |
d19cf32f AC |
2565 | /* end address of the flow dma area */ |
2566 | unsigned long num_entries; | |
d19cf32f | 2567 | unsigned long num_pages; |
d19cf32f | 2568 | struct page **pages_ptr; |
d19cf32f AC |
2569 | /* maximum table size in words */ |
2570 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 2571 | |
d19cf32f AC |
2572 | /* set the pointer to the first table */ |
2573 | table_ptr = (unsigned long *) first_table_ptr->physical_address; | |
cd1bb431 | 2574 | |
d19cf32f AC |
2575 | /* set the num of entries */ |
2576 | num_entries = (first_table_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) | |
2577 | & SEP_NUM_ENTRIES_MASK; | |
cd1bb431 | 2578 | |
d19cf32f AC |
2579 | /* go over all the connected tables */ |
2580 | while (*table_ptr != 0xffffffff) { | |
2581 | /* get number of pages */ | |
2582 | num_pages = *(table_ptr - 2); | |
cd1bb431 | 2583 | |
d19cf32f AC |
2584 | /* get the pointer to the pages */ |
2585 | pages_ptr = (struct page **) (*(table_ptr - 1)); | |
cd1bb431 | 2586 | |
d19cf32f AC |
2587 | /* free the pages */ |
2588 | sep_free_dma_pages(pages_ptr, num_pages, 1); | |
cd1bb431 | 2589 | |
d19cf32f AC |
2590 | /* goto to the info entry */ |
2591 | info_entry_ptr = ((struct sep_lli_entry_t *) table_ptr) + (num_entries - 1); | |
cd1bb431 | 2592 | |
d19cf32f AC |
2593 | table_ptr = (unsigned long *) info_entry_ptr->physical_address; |
2594 | num_entries = (info_entry_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
2595 | } | |
cd1bb431 | 2596 | |
d19cf32f | 2597 | return; |
cd1bb431 MA |
2598 | } |
2599 | ||
2600 | /* | |
2601 | This function handler the set flow id command | |
2602 | */ | |
2603 | static int sep_set_flow_id_handler(unsigned long arg) | |
2604 | { | |
d19cf32f | 2605 | int error; |
d19cf32f | 2606 | unsigned long flow_id; |
d19cf32f | 2607 | struct sep_flow_context_t *flow_data_ptr; |
cd1bb431 | 2608 | |
d19cf32f | 2609 | dbg("------------>SEP Driver: sep_set_flow_id_handler start\n"); |
cd1bb431 | 2610 | |
d19cf32f AC |
2611 | error = get_user(flow_id, &(((struct sep_driver_set_flow_id_t *) arg)->flow_id)); |
2612 | if (error) | |
2613 | goto end_function; | |
cd1bb431 | 2614 | |
d19cf32f AC |
2615 | /* find the flow data structure that was just used for creating new flow |
2616 | - its id should be default */ | |
2617 | error = sep_find_flow_context(SEP_TEMP_FLOW_ID, &flow_data_ptr); | |
2618 | if (error) | |
2619 | goto end_function; | |
cd1bb431 | 2620 | |
d19cf32f AC |
2621 | /* set flow id */ |
2622 | flow_data_ptr->flow_id = flow_id; | |
cd1bb431 | 2623 | |
f93e4bf9 | 2624 | end_function: |
d19cf32f | 2625 | dbg("SEP Driver:<-------- sep_set_flow_id_handler end\n"); |
d19cf32f | 2626 | return error; |
cd1bb431 MA |
2627 | } |
2628 | ||
2629 | ||
2630 | /* | |
2631 | calculates time and sets it at the predefined address | |
2632 | */ | |
d19cf32f | 2633 | static int sep_set_time(unsigned long *address_ptr, unsigned long *time_in_sec_ptr) |
cd1bb431 | 2634 | { |
d19cf32f | 2635 | struct timeval time; |
d19cf32f AC |
2636 | /* address of time in the kernel */ |
2637 | unsigned long time_addr; | |
cd1bb431 MA |
2638 | |
2639 | ||
d19cf32f | 2640 | dbg("SEP Driver:--------> sep_set_time start\n"); |
cd1bb431 | 2641 | |
d19cf32f | 2642 | do_gettimeofday(&time); |
cd1bb431 | 2643 | |
d19cf32f AC |
2644 | /* set value in the SYSTEM MEMORY offset */ |
2645 | time_addr = sep_dev->message_shared_area_addr + SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES; | |
cd1bb431 | 2646 | |
d19cf32f AC |
2647 | *(unsigned long *) time_addr = SEP_TIME_VAL_TOKEN; |
2648 | *(unsigned long *) (time_addr + 4) = time.tv_sec; | |
cd1bb431 | 2649 | |
d19cf32f AC |
2650 | edbg("SEP Driver:time.tv_sec is %lu\n", time.tv_sec); |
2651 | edbg("SEP Driver:time_addr is %lu\n", time_addr); | |
2652 | edbg("SEP Driver:g_message_shared_area_addr is %lu\n", sep_dev->message_shared_area_addr); | |
cd1bb431 | 2653 | |
d19cf32f AC |
2654 | /* set the output parameters if needed */ |
2655 | if (address_ptr) | |
2656 | *address_ptr = sep_shared_area_virt_to_phys(time_addr); | |
cd1bb431 | 2657 | |
d19cf32f AC |
2658 | if (time_in_sec_ptr) |
2659 | *time_in_sec_ptr = time.tv_sec; | |
cd1bb431 | 2660 | |
d19cf32f | 2661 | dbg("SEP Driver:<-------- sep_set_time end\n"); |
cd1bb431 | 2662 | |
d19cf32f | 2663 | return 0; |
cd1bb431 MA |
2664 | } |
2665 | ||
794f1d78 AC |
2666 | static void sep_wait_busy(struct sep_device *dev) |
2667 | { | |
2668 | u32 reg; | |
2669 | ||
2670 | do { | |
2671 | reg = sep_read_reg(sep_dev, HW_HOST_SEP_BUSY_REG_ADDR); | |
2672 | } while (reg); | |
2673 | } | |
2674 | ||
cd1bb431 MA |
2675 | /* |
2676 | PATCH for configuring the DMA to single burst instead of multi-burst | |
2677 | */ | |
2678 | static void sep_configure_dma_burst(void) | |
2679 | { | |
cd1bb431 MA |
2680 | #define HW_AHB_RD_WR_BURSTS_REG_ADDR 0x0E10UL |
2681 | ||
d19cf32f | 2682 | dbg("SEP Driver:<-------- sep_configure_dma_burst start \n"); |
cd1bb431 | 2683 | |
d19cf32f AC |
2684 | /* request access to registers from SEP */ |
2685 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); | |
cd1bb431 | 2686 | |
d19cf32f | 2687 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n"); |
cd1bb431 | 2688 | |
d19cf32f | 2689 | sep_wait_busy(sep_dev); |
cd1bb431 | 2690 | |
d19cf32f | 2691 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (while(revVal) wait loop) \n"); |
cd1bb431 | 2692 | |
d19cf32f AC |
2693 | /* set the DMA burst register to single burst */ |
2694 | sep_write_reg(sep_dev, HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL); | |
cd1bb431 | 2695 | |
d19cf32f AC |
2696 | /* release the sep busy */ |
2697 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL); | |
2698 | sep_wait_busy(sep_dev); | |
cd1bb431 | 2699 | |
d19cf32f | 2700 | dbg("SEP Driver:<-------- sep_configure_dma_burst done \n"); |
cd1bb431 MA |
2701 | |
2702 | } | |
2703 | ||
0097a69d AC |
2704 | /* |
2705 | function that is activaed on the succesfull probe of the SEP device | |
2706 | */ | |
2707 | static int __devinit sep_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2708 | { | |
2709 | int error = 0; | |
2710 | ||
2711 | edbg("Sep pci probe starting\n"); | |
2712 | ||
2713 | /* enable the device */ | |
2714 | error = pci_enable_device(pdev); | |
2715 | if (error) { | |
2716 | edbg("error enabling pci device\n"); | |
2717 | goto end_function; | |
2718 | } | |
2719 | ||
2720 | /* set the pci dev pointer */ | |
2721 | sep_dev->sep_pci_dev_ptr = pdev; | |
2722 | ||
2723 | /* get the io memory start address */ | |
2724 | sep_dev->io_memory_start_physical_address = pci_resource_start(pdev, 0); | |
2725 | if (!sep_dev->io_memory_start_physical_address) { | |
2726 | edbg("SEP Driver error pci resource start\n"); | |
2727 | goto end_function; | |
2728 | } | |
2729 | ||
2730 | /* get the io memory end address */ | |
2731 | sep_dev->io_memory_end_physical_address = pci_resource_end(pdev, 0); | |
2732 | if (!sep_dev->io_memory_end_physical_address) { | |
2733 | edbg("SEP Driver error pci resource end\n"); | |
2734 | goto end_function; | |
2735 | } | |
2736 | ||
2737 | sep_dev->io_memory_size = sep_dev->io_memory_end_physical_address - sep_dev->io_memory_start_physical_address + 1; | |
2738 | ||
2739 | edbg("SEP Driver:io_memory_start_physical_address is %08lx\n", sep_dev->io_memory_start_physical_address); | |
2740 | ||
2741 | edbg("SEP Driver:io_memory_end_phyaical_address is %08lx\n", sep_dev->io_memory_end_physical_address); | |
2742 | ||
2743 | edbg("SEP Driver:io_memory_size is %08lx\n", sep_dev->io_memory_size); | |
2744 | ||
2745 | sep_dev->io_memory_start_virtual_address = ioremap_nocache(sep_dev->io_memory_start_physical_address, sep_dev->io_memory_size); | |
2746 | if (!sep_dev->io_memory_start_virtual_address) { | |
2747 | edbg("SEP Driver error ioremap of io memory\n"); | |
2748 | goto end_function; | |
2749 | } | |
2750 | ||
2751 | edbg("SEP Driver:io_memory_start_virtual_address is %p\n", sep_dev->io_memory_start_virtual_address); | |
2752 | ||
2753 | sep_dev->reg_base_address = (void __iomem *) sep_dev->io_memory_start_virtual_address; | |
2754 | ||
2755 | ||
2756 | /* set up system base address and shared memory location */ | |
2757 | ||
2758 | sep_dev->rar_virtual_address = kmalloc(2 * SEP_RAR_IO_MEM_REGION_SIZE, GFP_KERNEL); | |
2759 | ||
2760 | if (!sep_dev->rar_virtual_address) { | |
2761 | edbg("SEP Driver:cant kmalloc rar\n"); | |
2762 | goto end_function; | |
2763 | } | |
2764 | /* FIXME */ | |
2765 | sep_dev->rar_physical_address = __pa(sep_dev->rar_virtual_address); | |
2766 | ||
2767 | edbg("SEP Driver:rar_physical is %08lx\n", sep_dev->rar_physical_address); | |
2768 | edbg("SEP Driver:rar_virtual is %p\n", sep_dev->rar_virtual_address); | |
2769 | ||
2770 | #if !SEP_DRIVER_POLLING_MODE | |
2771 | ||
2772 | edbg("SEP Driver: about to write IMR and ICR REG_ADDR\n"); | |
2773 | ||
2774 | /* clear ICR register */ | |
2775 | sep_write_reg(sep_dev, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF); | |
2776 | ||
2777 | /* set the IMR register - open only GPR 2 */ | |
2778 | sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); | |
2779 | ||
2780 | /* figure out our irq */ | |
2781 | /* FIXME: */ | |
2782 | error = pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, (u8 *) & sep_dev->sep_irq); | |
2783 | ||
2784 | edbg("SEP Driver: my irq is %d\n", sep_irq); | |
2785 | ||
2786 | edbg("SEP Driver: about to call request_irq\n"); | |
2787 | /* get the interrupt line */ | |
2788 | error = request_irq(sep_irq, sep_inthandler, IRQF_SHARED, "sep_driver", &sep_dev->reg_base_address); | |
2789 | if (error) | |
2790 | goto end_function; | |
2791 | ||
2792 | goto end_function; | |
2793 | edbg("SEP Driver: about to write IMR REG_ADDR"); | |
2794 | ||
2795 | /* set the IMR register - open only GPR 2 */ | |
2796 | sep_write_reg(sep_dev, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); | |
2797 | ||
2798 | #endif /* SEP_DRIVER_POLLING_MODE */ | |
2799 | end_function: | |
2800 | return error; | |
2801 | } | |
2802 | ||
2803 | static struct pci_device_id sep_pci_id_tbl[] = { | |
2804 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080c)}, | |
2805 | {0} | |
2806 | }; | |
2807 | ||
2808 | MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl); | |
2809 | ||
2810 | /* field for registering driver to PCI device */ | |
2811 | static struct pci_driver sep_pci_driver = { | |
2812 | .name = "sep_sec_driver", | |
2813 | .id_table = sep_pci_id_tbl, | |
2814 | .probe = sep_probe | |
2815 | }; | |
2816 | ||
2817 | /* | |
2818 | this function registers th driver to | |
2819 | the device subsystem( either PCI, USB, etc) | |
2820 | */ | |
2821 | int sep_register_driver_to_device(void) | |
2822 | { | |
2823 | return pci_register_driver(&sep_pci_driver); | |
2824 | } | |
2825 | ||
2826 | ||
2827 | ||
2f82614c AC |
2828 | /* major and minor device numbers */ |
2829 | static dev_t sep_devno; | |
2830 | ||
2831 | /* the files operations structure of the driver */ | |
2832 | static struct file_operations sep_file_operations = { | |
2833 | .owner = THIS_MODULE, | |
2834 | .ioctl = sep_ioctl, | |
2835 | .poll = sep_poll, | |
2836 | .open = sep_open, | |
2837 | .release = sep_release, | |
2838 | .mmap = sep_mmap, | |
2839 | }; | |
2840 | ||
2841 | ||
2842 | /* cdev struct of the driver */ | |
2843 | static struct cdev sep_cdev; | |
2844 | ||
a2171b68 AC |
2845 | /* |
2846 | this function registers the driver to the file system | |
2847 | */ | |
2848 | static int sep_register_driver_to_fs(void) | |
2849 | { | |
2f82614c | 2850 | int ret_val = alloc_chrdev_region(&sep_devno, 0, 1, "sep_sec_driver"); |
a2171b68 AC |
2851 | if (ret_val) { |
2852 | edbg("sep_driver:major number allocation failed, retval is %d\n", ret_val); | |
2853 | goto end_function; | |
2854 | } | |
2855 | ||
a2171b68 | 2856 | /* init cdev */ |
2f82614c AC |
2857 | cdev_init(&sep_cdev, &sep_file_operations); |
2858 | sep_cdev.owner = THIS_MODULE; | |
a2171b68 AC |
2859 | |
2860 | /* register the driver with the kernel */ | |
2f82614c | 2861 | ret_val = cdev_add(&sep_cdev, sep_devno, 1); |
a2171b68 AC |
2862 | |
2863 | if (ret_val) { | |
2864 | edbg("sep_driver:cdev_add failed, retval is %d\n", ret_val); | |
2865 | goto end_function_unregister_devnum; | |
2866 | } | |
2867 | ||
2868 | goto end_function; | |
2869 | ||
2870 | end_function_unregister_devnum: | |
2871 | ||
2872 | /* unregister dev numbers */ | |
2f82614c | 2873 | unregister_chrdev_region(sep_devno, 1); |
a2171b68 AC |
2874 | |
2875 | end_function: | |
2876 | return ret_val; | |
2877 | } | |
2878 | ||
2879 | /* | |
2880 | this function unregisters driver from fs | |
2881 | */ | |
2882 | static void sep_unregister_driver_from_fs(void) | |
2883 | { | |
2f82614c | 2884 | cdev_del(&sep_cdev); |
a2171b68 | 2885 | /* unregister dev numbers */ |
2f82614c | 2886 | unregister_chrdev_region(sep_devno, 1); |
a2171b68 AC |
2887 | } |
2888 | ||
2889 | ||
2890 | /*-------------------------------------------------------------- | |
2891 | init function | |
2892 | ----------------------------------------------------------------*/ | |
2893 | static int __init sep_init(void) | |
2894 | { | |
2895 | int ret_val = 0; | |
2896 | int counter; | |
2897 | int size; /* size of memory for allocation */ | |
2898 | ||
2899 | dbg("SEP Driver:-------->Init start\n"); | |
2900 | edbg("sep->shared_area_addr = %lx\n", (unsigned long) &sep_dev->shared_area_addr); | |
2901 | ||
2902 | /* transaction counter that coordinates the transactions between SEP | |
2903 | and HOST */ | |
2904 | sep_dev->host_to_sep_send_counter = 0; | |
2905 | ||
2906 | /* counter for the messages from sep */ | |
2907 | sep_dev->sep_to_host_reply_counter = 0; | |
2908 | ||
2909 | /* counter for the number of bytes allocated in the pool | |
2910 | for the current transaction */ | |
2911 | sep_dev->data_pool_bytes_allocated = 0; | |
2912 | ||
2913 | /* set the starting mode to blocking */ | |
2914 | sep_dev->block_mode_flag = 1; | |
2915 | ||
2916 | ret_val = sep_register_driver_to_device(); | |
2917 | if (ret_val) { | |
2918 | edbg("sep_driver:sep_driver_to_device failed, ret_val is %d\n", ret_val); | |
2919 | goto end_function_unregister_from_fs; | |
2920 | } | |
2921 | /* calculate the total size for allocation */ | |
2922 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2923 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; | |
2924 | ||
2925 | /* allocate the shared area */ | |
2926 | if (sep_map_and_alloc_shared_area(size, &sep_dev->shared_area_addr, &sep_dev->phys_shared_area_addr)) { | |
2927 | ret_val = -ENOMEM; | |
2928 | /* allocation failed */ | |
2929 | goto end_function_unmap_io_memory; | |
2930 | } | |
2931 | /* now set the memory regions */ | |
2932 | sep_dev->message_shared_area_addr = sep_dev->shared_area_addr; | |
2933 | ||
2934 | edbg("SEP Driver: g_message_shared_area_addr is %08lx\n", sep_dev->message_shared_area_addr); | |
2935 | ||
2936 | #if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1) | |
2937 | /* send the new SHARED MESSAGE AREA to the SEP */ | |
2938 | sep_write_reg(sep_dev, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep_dev->phys_shared_area_addr); | |
2939 | ||
2940 | /* poll for SEP response */ | |
2941 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR); | |
2942 | while (retVal != 0xffffffff && retVal != sep_dev->phys_shared_area_addr) | |
2943 | retVal = sep_read_reg(sep_dev, HW_HOST_SEP_HOST_GPR1_REG_ADDR); | |
2944 | ||
2945 | /* check the return value (register) */ | |
2946 | if (retVal != sep_dev->phys_shared_area_addr) { | |
2947 | ret_val = -ENOMEM; | |
2948 | goto end_function_deallocate_message_area; | |
2949 | } | |
2950 | #endif | |
2951 | /* init the flow contextes */ | |
2952 | for (counter = 0; counter < SEP_DRIVER_NUM_FLOWS; counter++) | |
2953 | sep_dev->flows_data_array[counter].flow_id = SEP_FREE_FLOW_ID; | |
2954 | ||
2955 | sep_dev->flow_wq_ptr = create_singlethread_workqueue("sepflowwq"); | |
2956 | if (sep_dev->flow_wq_ptr == 0) { | |
2957 | ret_val = -ENOMEM; | |
2958 | edbg("sep_driver:flow queue creation failed\n"); | |
2959 | goto end_function_deallocate_sep_shared_area; | |
2960 | } | |
2961 | edbg("SEP Driver: create flow workqueue \n"); | |
2962 | ||
2963 | /* register driver to fs */ | |
2964 | ret_val = sep_register_driver_to_fs(); | |
2965 | if (ret_val) | |
2966 | goto end_function_deallocate_sep_shared_area; | |
2967 | /* load the rom code */ | |
2968 | sep_load_rom_code(); | |
2969 | goto end_function; | |
2970 | end_function_unregister_from_fs: | |
2971 | /* unregister from fs */ | |
2972 | sep_unregister_driver_from_fs(); | |
2973 | end_function_deallocate_sep_shared_area: | |
2974 | /* de-allocate shared area */ | |
2975 | sep_unmap_and_free_shared_area(size, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr); | |
2976 | end_function_unmap_io_memory: | |
2977 | iounmap((void *) sep_dev->reg_base_address); | |
2978 | /* release io memory region */ | |
2979 | release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); | |
2980 | end_function: | |
2981 | dbg("SEP Driver:<-------- Init end\n"); | |
2982 | return ret_val; | |
2983 | } | |
2984 | ||
2985 | ||
2986 | /*------------------------------------------------------------- | |
2987 | exit function | |
2988 | --------------------------------------------------------------*/ | |
2989 | static void __exit sep_exit(void) | |
2990 | { | |
2991 | int size; | |
2992 | ||
2993 | dbg("SEP Driver:--------> Exit start\n"); | |
2994 | ||
2995 | /* unregister from fs */ | |
2996 | sep_unregister_driver_from_fs(); | |
2997 | /* calculate the total size for de-allocation */ | |
2998 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2999 | SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES + SEP_DRIVER_STATIC_AREA_SIZE_IN_BYTES + SEP_DRIVER_SYSTEM_DATA_MEMORY_SIZE_IN_BYTES; | |
3000 | /* free shared area */ | |
3001 | sep_unmap_and_free_shared_area(size, sep_dev->shared_area_addr, sep_dev->phys_shared_area_addr); | |
3002 | edbg("SEP Driver: free pages SEP SHARED AREA \n"); | |
3003 | iounmap((void *) sep_dev->reg_base_address); | |
3004 | edbg("SEP Driver: iounmap \n"); | |
3005 | /* release io memory region */ | |
3006 | release_mem_region(SEP_IO_MEM_REGION_START_ADDRESS, SEP_IO_MEM_REGION_SIZE); | |
3007 | edbg("SEP Driver: release_mem_region \n"); | |
3008 | dbg("SEP Driver:<-------- Exit end\n"); | |
3009 | } | |
3010 | ||
3011 | ||
cd1bb431 MA |
3012 | module_init(sep_init); |
3013 | module_exit(sep_exit); | |
3014 | ||
3015 | MODULE_LICENSE("GPL"); |