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Commit | Line | Data |
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cd1bb431 MA |
1 | /* |
2 | * | |
51faa9d2 | 3 | * sep_driver.c - Security Processor Driver main group of functions |
cd1bb431 MA |
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" | |
f5e3980f | 52 | #include "sep_dev.h" |
cd1bb431 | 53 | |
0097a69d | 54 | #if SEP_DRIVER_ARM_DEBUG_MODE |
cd1bb431 | 55 | |
0097a69d AC |
56 | #define CRYS_SEP_ROM_length 0x4000 |
57 | #define CRYS_SEP_ROM_start_address 0x8000C000UL | |
58 | #define CRYS_SEP_ROM_start_address_offset 0xC000UL | |
59 | #define SEP_ROM_BANK_register 0x80008420UL | |
60 | #define SEP_ROM_BANK_register_offset 0x8420UL | |
61 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0x82000000 | |
cd1bb431 | 62 | |
0097a69d AC |
63 | /* |
64 | * THESE 2 definitions are specific to the board - must be | |
65 | * defined during integration | |
66 | */ | |
67 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0xFF0D0000 | |
68 | ||
69 | /* 2M size */ | |
70 | ||
ca605bb6 | 71 | static void sep_load_rom_code(struct sep_device *sep) |
0097a69d AC |
72 | { |
73 | /* Index variables */ | |
74 | unsigned long i, k, j; | |
904290c0 AC |
75 | u32 reg; |
76 | u32 error; | |
77 | u32 warning; | |
0097a69d AC |
78 | |
79 | /* Loading ROM from SEP_ROM_image.h file */ | |
80 | k = sizeof(CRYS_SEP_ROM); | |
81 | ||
82 | edbg("SEP Driver: DX_CC_TST_SepRomLoader start\n"); | |
83 | ||
84 | edbg("SEP Driver: k is %lu\n", k); | |
ca605bb6 | 85 | edbg("SEP Driver: sep->reg_addr is %p\n", sep->reg_addr); |
0097a69d AC |
86 | edbg("SEP Driver: CRYS_SEP_ROM_start_address_offset is %p\n", CRYS_SEP_ROM_start_address_offset); |
87 | ||
88 | for (i = 0; i < 4; i++) { | |
89 | /* write bank */ | |
ca605bb6 | 90 | sep_write_reg(sep, SEP_ROM_BANK_register_offset, i); |
0097a69d AC |
91 | |
92 | for (j = 0; j < CRYS_SEP_ROM_length / 4; j++) { | |
ca605bb6 | 93 | sep_write_reg(sep, CRYS_SEP_ROM_start_address_offset + 4 * j, CRYS_SEP_ROM[i * 0x1000 + j]); |
0097a69d AC |
94 | |
95 | k = k - 4; | |
96 | ||
97 | if (k == 0) { | |
98 | j = CRYS_SEP_ROM_length; | |
99 | i = 4; | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | /* reset the SEP */ | |
ca605bb6 | 105 | sep_write_reg(sep, HW_HOST_SEP_SW_RST_REG_ADDR, 0x1); |
0097a69d AC |
106 | |
107 | /* poll for SEP ROM boot finish */ | |
dabe6e69 | 108 | do |
ca605bb6 | 109 | reg = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
dabe6e69 | 110 | while (!reg); |
0097a69d AC |
111 | |
112 | edbg("SEP Driver: ROM polling ended\n"); | |
113 | ||
904290c0 | 114 | switch (reg) { |
0097a69d AC |
115 | case 0x1: |
116 | /* fatal error - read erro status from GPRO */ | |
ca605bb6 | 117 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); |
0097a69d AC |
118 | edbg("SEP Driver: ROM polling case 1\n"); |
119 | break; | |
0097a69d AC |
120 | case 0x4: |
121 | /* Cold boot ended successfully */ | |
0097a69d AC |
122 | case 0x8: |
123 | /* Warmboot ended successfully */ | |
0097a69d AC |
124 | case 0x10: |
125 | /* ColdWarm boot ended successfully */ | |
904290c0 | 126 | error = 0; |
dabe6e69 AC |
127 | case 0x2: |
128 | /* Boot First Phase ended */ | |
129 | warning = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
0097a69d | 130 | case 0x20: |
dabe6e69 | 131 | edbg("SEP Driver: ROM polling case %d\n", reg); |
0097a69d AC |
132 | break; |
133 | } | |
134 | ||
135 | } | |
136 | ||
137 | #else | |
ca605bb6 | 138 | static void sep_load_rom_code(struct sep_device *sep) { } |
0097a69d | 139 | #endif /* SEP_DRIVER_ARM_DEBUG_MODE */ |
cd1bb431 | 140 | |
cd1bb431 MA |
141 | |
142 | ||
0097a69d AC |
143 | /*---------------------------------------- |
144 | DEFINES | |
145 | -----------------------------------------*/ | |
146 | ||
0097a69d AC |
147 | #define BASE_ADDRESS_FOR_SYSTEM 0xfffc0000 |
148 | #define SEP_RAR_IO_MEM_REGION_SIZE 0x40000 | |
cd1bb431 MA |
149 | |
150 | /*-------------------------------------------- | |
151 | GLOBAL variables | |
152 | --------------------------------------------*/ | |
153 | ||
154 | /* debug messages level */ | |
51faa9d2 AC |
155 | static int debug; |
156 | module_param(debug, int , 0); | |
157 | MODULE_PARM_DESC(debug, "Flag to enable SEP debug messages"); | |
cd1bb431 | 158 | |
0097a69d AC |
159 | /* Keep this a single static object for now to keep the conversion easy */ |
160 | ||
161 | static struct sep_device sep_instance; | |
b10b483e | 162 | static struct sep_device *sep_dev = &sep_instance; |
0097a69d | 163 | |
cd1bb431 MA |
164 | /* |
165 | mutex for the access to the internals of the sep driver | |
166 | */ | |
167 | static DEFINE_MUTEX(sep_mutex); | |
168 | ||
169 | ||
170 | /* wait queue head (event) of the driver */ | |
904290c0 | 171 | static DECLARE_WAIT_QUEUE_HEAD(sep_event); |
cd1bb431 | 172 | |
6f13ea3d AC |
173 | /** |
174 | * sep_load_firmware - copy firmware cache/resident | |
175 | * @sep: device we are loading | |
176 | * | |
177 | * This functions copies the cache and resident from their source | |
178 | * location into destination shared memory. | |
179 | */ | |
180 | ||
181 | static int sep_load_firmware(struct sep_device *sep) | |
0097a69d | 182 | { |
0097a69d | 183 | const struct firmware *fw; |
0097a69d AC |
184 | char *cache_name = "cache.image.bin"; |
185 | char *res_name = "resident.image.bin"; | |
0097a69d AC |
186 | int error; |
187 | ||
ca605bb6 | 188 | edbg("SEP Driver:rar_virtual is %p\n", sep->rar_addr); |
51faa9d2 | 189 | edbg("SEP Driver:rar_bus is %08llx\n", (unsigned long long)sep->rar_bus); |
0097a69d | 190 | |
0097a69d | 191 | /* load cache */ |
ca605bb6 | 192 | error = request_firmware(&fw, cache_name, &sep->pdev->dev); |
0097a69d AC |
193 | if (error) { |
194 | edbg("SEP Driver:cant request cache fw\n"); | |
6f13ea3d | 195 | return error; |
0097a69d | 196 | } |
6f13ea3d | 197 | edbg("SEP Driver:cache %08Zx@%p\n", fw->size, (void *) fw->data); |
0097a69d | 198 | |
70ae04e6 | 199 | memcpy(sep->rar_addr, (void *)fw->data, fw->size); |
790cf1b9 | 200 | sep->cache_size = fw->size; |
0097a69d AC |
201 | release_firmware(fw); |
202 | ||
70ae04e6 AC |
203 | sep->resident_bus = sep->rar_bus + sep->cache_size; |
204 | sep->resident_addr = sep->rar_addr + sep->cache_size; | |
0097a69d AC |
205 | |
206 | /* load resident */ | |
ca605bb6 | 207 | error = request_firmware(&fw, res_name, &sep->pdev->dev); |
0097a69d AC |
208 | if (error) { |
209 | edbg("SEP Driver:cant request res fw\n"); | |
6f13ea3d | 210 | return error; |
0097a69d | 211 | } |
6f13ea3d | 212 | edbg("sep: res %08Zx@%p\n", fw->size, (void *)fw->data); |
0097a69d | 213 | |
6f13ea3d | 214 | memcpy(sep->resident_addr, (void *) fw->data, fw->size); |
ca605bb6 | 215 | sep->resident_size = fw->size; |
0097a69d AC |
216 | release_firmware(fw); |
217 | ||
6f13ea3d AC |
218 | edbg("sep: resident v %p b %08llx cache v %p b %08llx\n", |
219 | sep->resident_addr, (unsigned long long)sep->resident_bus, | |
70ae04e6 | 220 | sep->rar_addr, (unsigned long long)sep->rar_bus); |
6f13ea3d | 221 | return 0; |
0097a69d AC |
222 | } |
223 | ||
ad6b9ab7 AC |
224 | /** |
225 | * sep_map_and_alloc_shared_area - allocate shared block | |
226 | * @sep: security processor | |
227 | * @size: size of shared area | |
228 | * | |
229 | * Allocate a shared buffer in host memory that can be used by both the | |
230 | * kernel and also the hardware interface via DMA. | |
231 | */ | |
232 | ||
ca605bb6 | 233 | static int sep_map_and_alloc_shared_area(struct sep_device *sep, |
ad6b9ab7 | 234 | unsigned long size) |
0097a69d | 235 | { |
ca605bb6 | 236 | /* shared_addr = ioremap_nocache(0xda00000,shared_area_size); */ |
c7b75562 | 237 | sep->shared_addr = dma_alloc_coherent(&sep->pdev->dev, size, |
ad6b9ab7 AC |
238 | &sep->shared_bus, GFP_KERNEL); |
239 | ||
ca605bb6 | 240 | if (!sep->shared_addr) { |
ad6b9ab7 AC |
241 | edbg("sep_driver :shared memory dma_alloc_coherent failed\n"); |
242 | return -ENOMEM; | |
0097a69d | 243 | } |
51faa9d2 | 244 | /* set the bus address of the shared area */ |
70ae04e6 | 245 | edbg("sep: shared_addr %ld bytes @%p (bus %08llx)\n", |
ad6b9ab7 | 246 | size, sep->shared_addr, (unsigned long long)sep->shared_bus); |
0097a69d AC |
247 | return 0; |
248 | } | |
249 | ||
ad6b9ab7 AC |
250 | /** |
251 | * sep_unmap_and_free_shared_area - free shared block | |
252 | * @sep: security processor | |
253 | * | |
254 | * Free the shared area allocated to the security processor. The | |
255 | * processor must have finished with this and any final posted | |
256 | * writes cleared before we do so. | |
257 | */ | |
8c7ff81a | 258 | static void sep_unmap_and_free_shared_area(struct sep_device *sep, int size) |
0097a69d | 259 | { |
ad6b9ab7 | 260 | dma_free_coherent(&sep->pdev->dev, size, |
70ae04e6 | 261 | sep->shared_addr, sep->shared_bus); |
0097a69d AC |
262 | } |
263 | ||
ad6b9ab7 | 264 | /** |
70ae04e6 | 265 | * sep_shared_virt_to_bus - convert bus/virt addresses |
ad6b9ab7 | 266 | * |
51faa9d2 | 267 | * Returns the bus address inside the shared area according |
ad6b9ab7 AC |
268 | * to the virtual address. |
269 | */ | |
270 | ||
70ae04e6 | 271 | static dma_addr_t sep_shared_virt_to_bus(struct sep_device *sep, |
790cf1b9 | 272 | void *virt_address) |
0097a69d | 273 | { |
ad6b9ab7 | 274 | dma_addr_t pa = sep->shared_bus + (virt_address - sep->shared_addr); |
51faa9d2 | 275 | edbg("sep: virt to bus b %08llx v %p\n", pa, virt_address); |
ad6b9ab7 | 276 | return pa; |
0097a69d AC |
277 | } |
278 | ||
ad6b9ab7 | 279 | /** |
70ae04e6 | 280 | * sep_shared_bus_to_virt - convert bus/virt addresses |
ad6b9ab7 AC |
281 | * |
282 | * Returns virtual address inside the shared area according | |
283 | * to the bus address. | |
284 | */ | |
285 | ||
70ae04e6 | 286 | static void *sep_shared_bus_to_virt(struct sep_device *sep, |
ad6b9ab7 | 287 | dma_addr_t bus_address) |
0097a69d | 288 | { |
ad6b9ab7 | 289 | return sep->shared_addr + (bus_address - sep->shared_bus); |
0097a69d AC |
290 | } |
291 | ||
292 | ||
4c29e979 AC |
293 | /** |
294 | * sep_try_open - attempt to open a SEP device | |
295 | * @sep: device to attempt to open | |
296 | * | |
297 | * Atomically attempt to get ownership of a SEP device. | |
298 | * Returns 1 if the device was opened, 0 on failure. | |
299 | */ | |
300 | ||
301 | static int sep_try_open(struct sep_device *sep) | |
cd1bb431 | 302 | { |
4c29e979 AC |
303 | if (!test_and_set_bit(0, &sep->in_use)) |
304 | return 1; | |
305 | return 0; | |
306 | } | |
307 | ||
308 | /** | |
309 | * sep_open - device open method | |
310 | * @inode: inode of sep device | |
311 | * @filp: file handle to sep device | |
312 | * | |
313 | * Open method for the SEP device. Called when userspace opens | |
314 | * the SEP device node. Must also release the memory data pool | |
315 | * allocations. | |
316 | * | |
317 | * Returns zero on success otherwise an error code. | |
318 | */ | |
cd1bb431 | 319 | |
4c29e979 AC |
320 | static int sep_open(struct inode *inode, struct file *filp) |
321 | { | |
322 | if (sep_dev == NULL) | |
323 | return -ENODEV; | |
cd1bb431 | 324 | |
d19cf32f | 325 | /* check the blocking mode */ |
4c29e979 AC |
326 | if (filp->f_flags & O_NDELAY) { |
327 | if (sep_try_open(sep_dev) == 0) | |
328 | return -EAGAIN; | |
329 | } else | |
330 | if (wait_event_interruptible(sep_event, sep_try_open(sep_dev)) < 0) | |
331 | return -EINTR; | |
cd1bb431 | 332 | |
ca605bb6 AC |
333 | /* Bind to the device, we only have one which makes it easy */ |
334 | filp->private_data = sep_dev; | |
d19cf32f AC |
335 | /* release data pool allocations */ |
336 | sep_dev->data_pool_bytes_allocated = 0; | |
4c29e979 | 337 | return 0; |
cd1bb431 MA |
338 | } |
339 | ||
340 | ||
4c29e979 AC |
341 | /** |
342 | * sep_release - close a SEP device | |
343 | * @inode: inode of SEP device | |
344 | * @filp: file handle being closed | |
345 | * | |
346 | * Called on the final close of a SEP device. As the open protects against | |
347 | * multiple simultaenous opens that means this method is called when the | |
348 | * final reference to the open handle is dropped. | |
349 | */ | |
cd1bb431 | 350 | |
4c29e979 | 351 | static int sep_release(struct inode *inode, struct file *filp) |
cd1bb431 | 352 | { |
4c29e979 | 353 | struct sep_device *sep = filp->private_data; |
d19cf32f AC |
354 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
355 | /* close IMR */ | |
ca605bb6 | 356 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, 0x7FFF); |
d19cf32f | 357 | /* release IRQ line */ |
ca605bb6 | 358 | free_irq(SEP_DIRVER_IRQ_NUM, sep); |
cd1bb431 MA |
359 | |
360 | #endif | |
4c29e979 AC |
361 | /* Ensure any blocked open progresses */ |
362 | clear_bit(0, &sep->in_use); | |
363 | wake_up(&sep_event); | |
d19cf32f | 364 | return 0; |
cd1bb431 MA |
365 | } |
366 | ||
cd1bb431 MA |
367 | /*--------------------------------------------------------------- |
368 | map function - this functions maps the message shared area | |
369 | -----------------------------------------------------------------*/ | |
d19cf32f | 370 | static int sep_mmap(struct file *filp, struct vm_area_struct *vma) |
cd1bb431 | 371 | { |
51faa9d2 | 372 | dma_addr_t bus_addr; |
ca605bb6 | 373 | struct sep_device *sep = filp->private_data; |
cd1bb431 | 374 | |
d19cf32f | 375 | dbg("-------->SEP Driver: mmap start\n"); |
cd1bb431 | 376 | |
d19cf32f AC |
377 | /* check that the size of the mapped range is as the size of the message |
378 | shared area */ | |
379 | if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) { | |
380 | edbg("SEP Driver mmap requested size is more than allowed\n"); | |
381 | printk(KERN_WARNING "SEP Driver mmap requested size is more \ | |
cd1bb431 | 382 | than allowed\n"); |
d19cf32f AC |
383 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_end); |
384 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_start); | |
385 | return -EAGAIN; | |
386 | } | |
387 | ||
70ae04e6 | 388 | edbg("SEP Driver:sep->shared_addr is %p\n", sep->shared_addr); |
d19cf32f | 389 | |
51faa9d2 | 390 | /* get bus address */ |
70ae04e6 | 391 | bus_addr = sep->shared_bus; |
d19cf32f | 392 | |
51faa9d2 | 393 | edbg("SEP Driver: phys_addr is %08llx\n", (unsigned long long)bus_addr); |
d19cf32f | 394 | |
51faa9d2 | 395 | if (remap_pfn_range(vma, vma->vm_start, bus_addr >> PAGE_SHIFT, vma->vm_end - vma->vm_start, vma->vm_page_prot)) { |
d19cf32f AC |
396 | edbg("SEP Driver remap_page_range failed\n"); |
397 | printk(KERN_WARNING "SEP Driver remap_page_range failed\n"); | |
398 | return -EAGAIN; | |
399 | } | |
400 | ||
401 | dbg("SEP Driver:<-------- mmap end\n"); | |
402 | ||
403 | return 0; | |
cd1bb431 MA |
404 | } |
405 | ||
406 | ||
407 | /*----------------------------------------------- | |
408 | poll function | |
409 | *----------------------------------------------*/ | |
d19cf32f | 410 | static unsigned int sep_poll(struct file *filp, poll_table * wait) |
cd1bb431 | 411 | { |
d19cf32f | 412 | unsigned long count; |
d19cf32f | 413 | unsigned int mask = 0; |
51faa9d2 | 414 | unsigned long retval = 0; /* flow id */ |
ca605bb6 | 415 | struct sep_device *sep = filp->private_data; |
cd1bb431 | 416 | |
d19cf32f | 417 | dbg("---------->SEP Driver poll: start\n"); |
cd1bb431 MA |
418 | |
419 | ||
420 | #if SEP_DRIVER_POLLING_MODE | |
421 | ||
51faa9d2 AC |
422 | while (sep->send_ct != (retval & 0x7FFFFFFF)) { |
423 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
cd1bb431 | 424 | |
d19cf32f | 425 | for (count = 0; count < 10 * 4; count += 4) |
70ae04e6 | 426 | edbg("Poll Debug Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + count))); |
d19cf32f | 427 | } |
cd1bb431 | 428 | |
ca605bb6 | 429 | sep->reply_ct++; |
cd1bb431 | 430 | #else |
d19cf32f | 431 | /* add the event to the polling wait table */ |
904290c0 | 432 | poll_wait(filp, &sep_event, wait); |
cd1bb431 MA |
433 | |
434 | #endif | |
435 | ||
ca605bb6 AC |
436 | edbg("sep->send_ct is %lu\n", sep->send_ct); |
437 | edbg("sep->reply_ct is %lu\n", sep->reply_ct); | |
d19cf32f AC |
438 | |
439 | /* check if the data is ready */ | |
ca605bb6 | 440 | if (sep->send_ct == sep->reply_ct) { |
d19cf32f | 441 | for (count = 0; count < 12 * 4; count += 4) |
70ae04e6 | 442 | edbg("Sep Mesg Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + count))); |
d19cf32f AC |
443 | |
444 | for (count = 0; count < 10 * 4; count += 4) | |
70ae04e6 | 445 | edbg("Debug Data Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + 0x1800 + count))); |
d19cf32f | 446 | |
51faa9d2 AC |
447 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR); |
448 | edbg("retval is %lu\n", retval); | |
d19cf32f | 449 | /* check if the this is sep reply or request */ |
51faa9d2 | 450 | if (retval >> 31) { |
d19cf32f AC |
451 | edbg("SEP Driver: sep request in\n"); |
452 | /* request */ | |
453 | mask |= POLLOUT | POLLWRNORM; | |
454 | } else { | |
455 | edbg("SEP Driver: sep reply in\n"); | |
456 | mask |= POLLIN | POLLRDNORM; | |
457 | } | |
cd1bb431 | 458 | } |
d19cf32f AC |
459 | dbg("SEP Driver:<-------- poll exit\n"); |
460 | return mask; | |
cd1bb431 MA |
461 | } |
462 | ||
0a18d7b5 AC |
463 | /* |
464 | calculates time and sets it at the predefined address | |
465 | */ | |
ca605bb6 | 466 | static int sep_set_time(struct sep_device *sep, unsigned long *address_ptr, unsigned long *time_in_sec_ptr) |
cd1bb431 | 467 | { |
0a18d7b5 AC |
468 | struct timeval time; |
469 | /* address of time in the kernel */ | |
790cf1b9 | 470 | u32 *time_addr; |
cd1bb431 | 471 | |
cd1bb431 | 472 | |
0a18d7b5 | 473 | dbg("SEP Driver:--------> sep_set_time start\n"); |
cd1bb431 | 474 | |
0a18d7b5 | 475 | do_gettimeofday(&time); |
cd1bb431 | 476 | |
0a18d7b5 | 477 | /* set value in the SYSTEM MEMORY offset */ |
70ae04e6 | 478 | time_addr = sep->shared_addr + SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES; |
cd1bb431 | 479 | |
790cf1b9 AC |
480 | time_addr[0] = SEP_TIME_VAL_TOKEN; |
481 | time_addr[1] = time.tv_sec; | |
cd1bb431 | 482 | |
0a18d7b5 | 483 | edbg("SEP Driver:time.tv_sec is %lu\n", time.tv_sec); |
790cf1b9 | 484 | edbg("SEP Driver:time_addr is %p\n", time_addr); |
70ae04e6 | 485 | edbg("SEP Driver:sep->shared_addr is %p\n", sep->shared_addr); |
b6368033 | 486 | |
0a18d7b5 AC |
487 | /* set the output parameters if needed */ |
488 | if (address_ptr) | |
70ae04e6 | 489 | *address_ptr = sep_shared_virt_to_bus(sep, time_addr); |
b6368033 | 490 | |
0a18d7b5 AC |
491 | if (time_in_sec_ptr) |
492 | *time_in_sec_ptr = time.tv_sec; | |
b6368033 | 493 | |
0a18d7b5 | 494 | dbg("SEP Driver:<-------- sep_set_time end\n"); |
b6368033 | 495 | |
0a18d7b5 AC |
496 | return 0; |
497 | } | |
b6368033 | 498 | |
0a18d7b5 AC |
499 | /* |
500 | This function raises interrupt to SEP that signals that is has a new | |
501 | command from HOST | |
502 | */ | |
ca605bb6 | 503 | static void sep_send_command_handler(struct sep_device *sep) |
0a18d7b5 AC |
504 | { |
505 | unsigned long count; | |
b6368033 | 506 | |
0a18d7b5 | 507 | dbg("SEP Driver:--------> sep_send_command_handler start\n"); |
ca605bb6 | 508 | sep_set_time(sep, 0, 0); |
b6368033 | 509 | |
0a18d7b5 AC |
510 | /* flash cache */ |
511 | flush_cache_all(); | |
b6368033 | 512 | |
0a18d7b5 | 513 | for (count = 0; count < 12 * 4; count += 4) |
70ae04e6 | 514 | edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + count))); |
0a18d7b5 AC |
515 | |
516 | /* update counter */ | |
ca605bb6 | 517 | sep->send_ct++; |
0a18d7b5 | 518 | /* send interrupt to SEP */ |
ca605bb6 | 519 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); |
0a18d7b5 AC |
520 | dbg("SEP Driver:<-------- sep_send_command_handler end\n"); |
521 | return; | |
b6368033 | 522 | } |
0a18d7b5 | 523 | |
cd1bb431 | 524 | /* |
0a18d7b5 AC |
525 | This function raises interrupt to SEPm that signals that is has a |
526 | new command from HOST | |
cd1bb431 | 527 | */ |
ca605bb6 | 528 | static void sep_send_reply_command_handler(struct sep_device *sep) |
cd1bb431 | 529 | { |
0a18d7b5 | 530 | unsigned long count; |
cd1bb431 | 531 | |
0a18d7b5 | 532 | dbg("SEP Driver:--------> sep_send_reply_command_handler start\n"); |
cd1bb431 | 533 | |
0a18d7b5 AC |
534 | /* flash cache */ |
535 | flush_cache_all(); | |
536 | for (count = 0; count < 12 * 4; count += 4) | |
70ae04e6 | 537 | edbg("Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + count))); |
0a18d7b5 | 538 | /* update counter */ |
ca605bb6 | 539 | sep->send_ct++; |
0a18d7b5 | 540 | /* send the interrupt to SEP */ |
ca605bb6 | 541 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep->send_ct); |
0a18d7b5 | 542 | /* update both counters */ |
ca605bb6 AC |
543 | sep->send_ct++; |
544 | sep->reply_ct++; | |
0a18d7b5 AC |
545 | dbg("SEP Driver:<-------- sep_send_reply_command_handler end\n"); |
546 | } | |
cd1bb431 | 547 | |
0a18d7b5 AC |
548 | /* |
549 | This function handles the allocate data pool memory request | |
51faa9d2 | 550 | This function returns calculates the bus address of the |
0a18d7b5 AC |
551 | allocated memory, and the offset of this area from the mapped address. |
552 | Therefore, the FVOs in user space can calculate the exact virtual | |
553 | address of this allocated memory | |
554 | */ | |
ca605bb6 AC |
555 | static int sep_allocate_data_pool_memory_handler(struct sep_device *sep, |
556 | unsigned long arg) | |
0a18d7b5 AC |
557 | { |
558 | int error; | |
559 | struct sep_driver_alloc_t command_args; | |
cd1bb431 | 560 | |
0a18d7b5 | 561 | dbg("SEP Driver:--------> sep_allocate_data_pool_memory_handler start\n"); |
cd1bb431 | 562 | |
0a18d7b5 AC |
563 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_alloc_t)); |
564 | if (error) | |
565 | goto end_function; | |
cd1bb431 | 566 | |
0a18d7b5 | 567 | /* allocate memory */ |
ca605bb6 | 568 | if ((sep->data_pool_bytes_allocated + command_args.num_bytes) > SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { |
51faa9d2 | 569 | error = -ENOMEM; |
0a18d7b5 AC |
570 | goto end_function; |
571 | } | |
cd1bb431 | 572 | |
51faa9d2 | 573 | /* set the virtual and bus address */ |
ca605bb6 | 574 | command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep->data_pool_bytes_allocated; |
70ae04e6 | 575 | command_args.phys_address = sep->shared_bus + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep->data_pool_bytes_allocated; |
0a18d7b5 AC |
576 | |
577 | /* write the memory back to the user space */ | |
578 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_alloc_t)); | |
579 | if (error) | |
580 | goto end_function; | |
581 | ||
582 | /* set the allocation */ | |
ca605bb6 | 583 | sep->data_pool_bytes_allocated += command_args.num_bytes; |
d19cf32f | 584 | |
f93e4bf9 | 585 | end_function: |
0a18d7b5 AC |
586 | dbg("SEP Driver:<-------- sep_allocate_data_pool_memory_handler end\n"); |
587 | return error; | |
cd1bb431 MA |
588 | } |
589 | ||
cd1bb431 | 590 | /* |
0a18d7b5 | 591 | This function handles write into allocated data pool command |
cd1bb431 | 592 | */ |
ca605bb6 | 593 | static int sep_write_into_data_pool_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 594 | { |
0a18d7b5 | 595 | int error; |
790cf1b9 AC |
596 | void *virt_address; |
597 | unsigned long va; | |
0a18d7b5 AC |
598 | unsigned long app_in_address; |
599 | unsigned long num_bytes; | |
790cf1b9 | 600 | void *data_pool_area_addr; |
cd1bb431 | 601 | |
0a18d7b5 | 602 | dbg("SEP Driver:--------> sep_write_into_data_pool_handler start\n"); |
cd1bb431 | 603 | |
0a18d7b5 AC |
604 | /* get the application address */ |
605 | error = get_user(app_in_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
606 | if (error) | |
607 | goto end_function; | |
cd1bb431 | 608 | |
0a18d7b5 | 609 | /* get the virtual kernel address address */ |
790cf1b9 | 610 | error = get_user(va, &(((struct sep_driver_write_t *) arg)->datapool_address)); |
0a18d7b5 AC |
611 | if (error) |
612 | goto end_function; | |
790cf1b9 | 613 | virt_address = (void *)va; |
cd1bb431 | 614 | |
0a18d7b5 AC |
615 | /* get the number of bytes */ |
616 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
617 | if (error) | |
618 | goto end_function; | |
cd1bb431 | 619 | |
0a18d7b5 | 620 | /* calculate the start of the data pool */ |
70ae04e6 | 621 | data_pool_area_addr = sep->shared_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; |
cd1bb431 | 622 | |
cd1bb431 | 623 | |
0a18d7b5 | 624 | /* check that the range of the virtual kernel address is correct */ |
ca605bb6 | 625 | if (virt_address < data_pool_area_addr || virt_address > (data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES)) { |
51faa9d2 | 626 | error = -EINVAL; |
d19cf32f | 627 | goto end_function; |
cd1bb431 | 628 | } |
0a18d7b5 | 629 | /* copy the application data */ |
790cf1b9 | 630 | error = copy_from_user(virt_address, (void *) app_in_address, num_bytes); |
0a18d7b5 AC |
631 | end_function: |
632 | dbg("SEP Driver:<-------- sep_write_into_data_pool_handler end\n"); | |
633 | return error; | |
634 | } | |
cd1bb431 | 635 | |
0a18d7b5 AC |
636 | /* |
637 | this function handles the read from data pool command | |
638 | */ | |
ca605bb6 | 639 | static int sep_read_from_data_pool_handler(struct sep_device *sep, unsigned long arg) |
0a18d7b5 AC |
640 | { |
641 | int error; | |
642 | /* virtual address of dest application buffer */ | |
643 | unsigned long app_out_address; | |
644 | /* virtual address of the data pool */ | |
790cf1b9 AC |
645 | unsigned long va; |
646 | void *virt_address; | |
0a18d7b5 | 647 | unsigned long num_bytes; |
790cf1b9 | 648 | void *data_pool_area_addr; |
cd1bb431 | 649 | |
0a18d7b5 | 650 | dbg("SEP Driver:--------> sep_read_from_data_pool_handler start\n"); |
cd1bb431 | 651 | |
0a18d7b5 AC |
652 | /* get the application address */ |
653 | error = get_user(app_out_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
654 | if (error) | |
655 | goto end_function; | |
cd1bb431 | 656 | |
0a18d7b5 | 657 | /* get the virtual kernel address address */ |
790cf1b9 | 658 | error = get_user(va, &(((struct sep_driver_write_t *) arg)->datapool_address)); |
0a18d7b5 AC |
659 | if (error) |
660 | goto end_function; | |
790cf1b9 | 661 | virt_address = (void *)va; |
cd1bb431 | 662 | |
0a18d7b5 AC |
663 | /* get the number of bytes */ |
664 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
665 | if (error) | |
666 | goto end_function; | |
cd1bb431 | 667 | |
0a18d7b5 | 668 | /* calculate the start of the data pool */ |
70ae04e6 | 669 | data_pool_area_addr = sep->shared_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; |
d19cf32f | 670 | |
ca605bb6 AC |
671 | /* FIXME: These are incomplete all over the driver: what about + len |
672 | and when doing that also overflows */ | |
0a18d7b5 | 673 | /* check that the range of the virtual kernel address is correct */ |
ca605bb6 | 674 | if (virt_address < data_pool_area_addr || virt_address > data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { |
51faa9d2 | 675 | error = -EINVAL; |
0a18d7b5 AC |
676 | goto end_function; |
677 | } | |
d19cf32f | 678 | |
0a18d7b5 | 679 | /* copy the application data */ |
790cf1b9 | 680 | error = copy_to_user((void *) app_out_address, virt_address, num_bytes); |
0a18d7b5 AC |
681 | end_function: |
682 | dbg("SEP Driver:<-------- sep_read_from_data_pool_handler end\n"); | |
683 | return error; | |
684 | } | |
d19cf32f | 685 | |
0a18d7b5 AC |
686 | /* |
687 | This function releases all the application virtual buffer physical pages, | |
688 | that were previously locked | |
689 | */ | |
690 | static int sep_free_dma_pages(struct page **page_array_ptr, unsigned long num_pages, unsigned long dirtyFlag) | |
691 | { | |
692 | unsigned long count; | |
d19cf32f | 693 | |
0a18d7b5 AC |
694 | if (dirtyFlag) { |
695 | for (count = 0; count < num_pages; count++) { | |
696 | /* the out array was written, therefore the data was changed */ | |
697 | if (!PageReserved(page_array_ptr[count])) | |
698 | SetPageDirty(page_array_ptr[count]); | |
699 | page_cache_release(page_array_ptr[count]); | |
d19cf32f | 700 | } |
0a18d7b5 AC |
701 | } else { |
702 | /* free in pages - the data was only read, therefore no update was done | |
703 | on those pages */ | |
704 | for (count = 0; count < num_pages; count++) | |
705 | page_cache_release(page_array_ptr[count]); | |
d19cf32f AC |
706 | } |
707 | ||
0a18d7b5 AC |
708 | if (page_array_ptr) |
709 | /* free the array */ | |
710 | kfree(page_array_ptr); | |
d19cf32f | 711 | |
d19cf32f | 712 | return 0; |
cd1bb431 MA |
713 | } |
714 | ||
715 | /* | |
0a18d7b5 AC |
716 | This function locks all the physical pages of the kernel virtual buffer |
717 | and construct a basic lli array, where each entry holds the physical | |
718 | page address and the size that application data holds in this physical pages | |
cd1bb431 | 719 | */ |
ca605bb6 AC |
720 | static int sep_lock_kernel_pages(struct sep_device *sep, |
721 | unsigned long kernel_virt_addr, | |
722 | unsigned long data_size, | |
723 | unsigned long *num_pages_ptr, | |
724 | struct sep_lli_entry_t **lli_array_ptr, | |
725 | struct page ***page_array_ptr) | |
cd1bb431 | 726 | { |
0a18d7b5 AC |
727 | int error = 0; |
728 | /* the the page of the end address of the user space buffer */ | |
729 | unsigned long end_page; | |
730 | /* the page of the start address of the user space buffer */ | |
731 | unsigned long start_page; | |
732 | /* the range in pages */ | |
733 | unsigned long num_pages; | |
734 | struct sep_lli_entry_t *lli_array; | |
735 | /* next kernel address to map */ | |
736 | unsigned long next_kernel_address; | |
737 | unsigned long count; | |
cd1bb431 | 738 | |
0a18d7b5 | 739 | dbg("SEP Driver:--------> sep_lock_kernel_pages start\n"); |
cd1bb431 | 740 | |
0a18d7b5 AC |
741 | /* set start and end pages and num pages */ |
742 | end_page = (kernel_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
743 | start_page = kernel_virt_addr >> PAGE_SHIFT; | |
744 | num_pages = end_page - start_page + 1; | |
cd1bb431 | 745 | |
0a18d7b5 AC |
746 | edbg("SEP Driver: kernel_virt_addr is %08lx\n", kernel_virt_addr); |
747 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
748 | edbg("SEP Driver: start_page is %lx\n", start_page); | |
749 | edbg("SEP Driver: end_page is %lx\n", end_page); | |
750 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
d19cf32f | 751 | |
0a18d7b5 AC |
752 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
753 | if (!lli_array) { | |
754 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
755 | error = -ENOMEM; | |
756 | goto end_function; | |
cd1bb431 | 757 | } |
cd1bb431 | 758 | |
0a18d7b5 AC |
759 | /* set the start address of the first page - app data may start not at |
760 | the beginning of the page */ | |
761 | lli_array[0].physical_address = (unsigned long) virt_to_phys((unsigned long *) kernel_virt_addr); | |
cd1bb431 | 762 | |
0a18d7b5 AC |
763 | /* check that not all the data is in the first page only */ |
764 | if ((PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK))) >= data_size) | |
765 | lli_array[0].block_size = data_size; | |
766 | else | |
767 | lli_array[0].block_size = PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK)); | |
768 | ||
769 | /* debug print */ | |
770 | 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); | |
771 | ||
772 | /* advance the address to the start of the next page */ | |
773 | next_kernel_address = (kernel_virt_addr & PAGE_MASK) + PAGE_SIZE; | |
774 | ||
775 | /* go from the second page to the prev before last */ | |
776 | for (count = 1; count < (num_pages - 1); count++) { | |
777 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
778 | lli_array[count].block_size = PAGE_SIZE; | |
779 | ||
780 | 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); | |
781 | next_kernel_address += PAGE_SIZE; | |
d19cf32f | 782 | } |
cd1bb431 | 783 | |
0a18d7b5 AC |
784 | /* if more then 1 pages locked - then update for the last page size needed */ |
785 | if (num_pages > 1) { | |
786 | /* update the address of the last page */ | |
787 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
cd1bb431 | 788 | |
0a18d7b5 AC |
789 | /* set the size of the last page */ |
790 | lli_array[count].block_size = (kernel_virt_addr + data_size) & (~PAGE_MASK); | |
cd1bb431 | 791 | |
0a18d7b5 AC |
792 | if (lli_array[count].block_size == 0) { |
793 | dbg("app_virt_addr is %08lx\n", kernel_virt_addr); | |
794 | dbg("data_size is %lu\n", data_size); | |
795 | while (1); | |
796 | } | |
cd1bb431 | 797 | |
0a18d7b5 AC |
798 | 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); |
799 | } | |
800 | /* set output params */ | |
801 | *lli_array_ptr = lli_array; | |
802 | *num_pages_ptr = num_pages; | |
803 | *page_array_ptr = 0; | |
804 | end_function: | |
805 | dbg("SEP Driver:<-------- sep_lock_kernel_pages end\n"); | |
806 | return 0; | |
807 | } | |
808 | ||
809 | /* | |
810 | This function locks all the physical pages of the application virtual buffer | |
811 | and construct a basic lli array, where each entry holds the physical page | |
812 | address and the size that application data holds in this physical pages | |
cd1bb431 | 813 | */ |
ca605bb6 AC |
814 | static int sep_lock_user_pages(struct sep_device *sep, |
815 | unsigned long app_virt_addr, | |
816 | unsigned long data_size, | |
817 | unsigned long *num_pages_ptr, | |
818 | struct sep_lli_entry_t **lli_array_ptr, | |
819 | struct page ***page_array_ptr) | |
cd1bb431 | 820 | { |
0a18d7b5 AC |
821 | int error = 0; |
822 | /* the the page of the end address of the user space buffer */ | |
823 | unsigned long end_page; | |
824 | /* the page of the start address of the user space buffer */ | |
825 | unsigned long start_page; | |
826 | /* the range in pages */ | |
827 | unsigned long num_pages; | |
828 | struct page **page_array; | |
829 | struct sep_lli_entry_t *lli_array; | |
830 | unsigned long count; | |
831 | int result; | |
d19cf32f | 832 | |
0a18d7b5 | 833 | dbg("SEP Driver:--------> sep_lock_user_pages start\n"); |
d19cf32f | 834 | |
0a18d7b5 AC |
835 | /* set start and end pages and num pages */ |
836 | end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
837 | start_page = app_virt_addr >> PAGE_SHIFT; | |
838 | num_pages = end_page - start_page + 1; | |
d19cf32f | 839 | |
0a18d7b5 AC |
840 | edbg("SEP Driver: app_virt_addr is %08lx\n", app_virt_addr); |
841 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
842 | edbg("SEP Driver: start_page is %lu\n", start_page); | |
843 | edbg("SEP Driver: end_page is %lu\n", end_page); | |
844 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
d19cf32f | 845 | |
0a18d7b5 AC |
846 | /* allocate array of pages structure pointers */ |
847 | page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); | |
848 | if (!page_array) { | |
849 | edbg("SEP Driver: kmalloc for page_array failed\n"); | |
d19cf32f | 850 | |
0a18d7b5 AC |
851 | error = -ENOMEM; |
852 | goto end_function; | |
853 | } | |
d19cf32f | 854 | |
0a18d7b5 AC |
855 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
856 | if (!lli_array) { | |
857 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
d19cf32f | 858 | |
0a18d7b5 AC |
859 | error = -ENOMEM; |
860 | goto end_function_with_error1; | |
861 | } | |
d19cf32f | 862 | |
0a18d7b5 AC |
863 | /* convert the application virtual address into a set of physical */ |
864 | down_read(¤t->mm->mmap_sem); | |
865 | result = get_user_pages(current, current->mm, app_virt_addr, num_pages, 1, 0, page_array, 0); | |
866 | up_read(¤t->mm->mmap_sem); | |
d19cf32f | 867 | |
0a18d7b5 AC |
868 | /* check the number of pages locked - if not all then exit with error */ |
869 | if (result != num_pages) { | |
870 | dbg("SEP Driver: not all pages locked by get_user_pages\n"); | |
d19cf32f | 871 | |
0a18d7b5 AC |
872 | error = -ENOMEM; |
873 | goto end_function_with_error2; | |
874 | } | |
d19cf32f | 875 | |
0a18d7b5 AC |
876 | /* flush the cache */ |
877 | for (count = 0; count < num_pages; count++) | |
878 | flush_dcache_page(page_array[count]); | |
d19cf32f | 879 | |
0a18d7b5 AC |
880 | /* set the start address of the first page - app data may start not at |
881 | the beginning of the page */ | |
882 | lli_array[0].physical_address = ((unsigned long) page_to_phys(page_array[0])) + (app_virt_addr & (~PAGE_MASK)); | |
d19cf32f | 883 | |
0a18d7b5 AC |
884 | /* check that not all the data is in the first page only */ |
885 | if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size) | |
886 | lli_array[0].block_size = data_size; | |
887 | else | |
888 | lli_array[0].block_size = PAGE_SIZE - (app_virt_addr & (~PAGE_MASK)); | |
d19cf32f | 889 | |
0a18d7b5 AC |
890 | /* debug print */ |
891 | 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); | |
d19cf32f | 892 | |
0a18d7b5 AC |
893 | /* go from the second page to the prev before last */ |
894 | for (count = 1; count < (num_pages - 1); count++) { | |
895 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
896 | lli_array[count].block_size = PAGE_SIZE; | |
d19cf32f | 897 | |
0a18d7b5 AC |
898 | 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); |
899 | } | |
d19cf32f | 900 | |
0a18d7b5 AC |
901 | /* if more then 1 pages locked - then update for the last page size needed */ |
902 | if (num_pages > 1) { | |
903 | /* update the address of the last page */ | |
904 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
d19cf32f | 905 | |
0a18d7b5 AC |
906 | /* set the size of the last page */ |
907 | lli_array[count].block_size = (app_virt_addr + data_size) & (~PAGE_MASK); | |
d19cf32f | 908 | |
0a18d7b5 AC |
909 | if (lli_array[count].block_size == 0) { |
910 | dbg("app_virt_addr is %08lx\n", app_virt_addr); | |
911 | dbg("data_size is %lu\n", data_size); | |
912 | while (1); | |
913 | } | |
914 | edbg("lli_array[%lu].physical_address is %08lx, \ | |
915 | lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); | |
cd1bb431 MA |
916 | } |
917 | ||
0a18d7b5 AC |
918 | /* set output params */ |
919 | *lli_array_ptr = lli_array; | |
920 | *num_pages_ptr = num_pages; | |
921 | *page_array_ptr = page_array; | |
922 | goto end_function; | |
923 | ||
924 | end_function_with_error2: | |
925 | /* release the cache */ | |
926 | for (count = 0; count < num_pages; count++) | |
927 | page_cache_release(page_array[count]); | |
928 | kfree(lli_array); | |
929 | end_function_with_error1: | |
930 | kfree(page_array); | |
931 | end_function: | |
932 | dbg("SEP Driver:<-------- sep_lock_user_pages end\n"); | |
d19cf32f | 933 | return 0; |
cd1bb431 MA |
934 | } |
935 | ||
0a18d7b5 | 936 | |
cd1bb431 MA |
937 | /* |
938 | this function calculates the size of data that can be inserted into the lli | |
939 | table from this array the condition is that either the table is full | |
940 | (all etnries are entered), or there are no more entries in the lli array | |
941 | */ | |
b10b483e | 942 | static unsigned long sep_calculate_lli_table_max_size(struct sep_lli_entry_t *lli_in_array_ptr, unsigned long num_array_entries) |
cd1bb431 | 943 | { |
f93e4bf9 | 944 | unsigned long table_data_size = 0; |
d19cf32f | 945 | unsigned long counter; |
cd1bb431 | 946 | |
d19cf32f AC |
947 | /* calculate the data in the out lli table if till we fill the whole |
948 | table or till the data has ended */ | |
949 | for (counter = 0; (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) && (counter < num_array_entries); counter++) | |
950 | table_data_size += lli_in_array_ptr[counter].block_size; | |
d19cf32f | 951 | return table_data_size; |
cd1bb431 MA |
952 | } |
953 | ||
954 | /* | |
955 | this functions builds ont lli table from the lli_array according to | |
956 | the given size of data | |
957 | */ | |
d19cf32f | 958 | 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 | 959 | { |
d19cf32f | 960 | unsigned long curr_table_data_size; |
d19cf32f AC |
961 | /* counter of lli array entry */ |
962 | unsigned long array_counter; | |
cd1bb431 | 963 | |
d19cf32f AC |
964 | dbg("SEP Driver:--------> sep_build_lli_table start\n"); |
965 | ||
966 | /* init currrent table data size and lli array entry counter */ | |
967 | curr_table_data_size = 0; | |
968 | array_counter = 0; | |
969 | *num_table_entries_ptr = 1; | |
970 | ||
971 | edbg("SEP Driver:table_data_size is %lu\n", table_data_size); | |
972 | ||
973 | /* fill the table till table size reaches the needed amount */ | |
974 | while (curr_table_data_size < table_data_size) { | |
975 | /* update the number of entries in table */ | |
976 | (*num_table_entries_ptr)++; | |
977 | ||
978 | lli_table_ptr->physical_address = lli_array_ptr[array_counter].physical_address; | |
979 | lli_table_ptr->block_size = lli_array_ptr[array_counter].block_size; | |
980 | curr_table_data_size += lli_table_ptr->block_size; | |
981 | ||
982 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
983 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
984 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
985 | ||
986 | /* check for overflow of the table data */ | |
987 | if (curr_table_data_size > table_data_size) { | |
988 | edbg("SEP Driver:curr_table_data_size > table_data_size\n"); | |
989 | ||
990 | /* update the size of block in the table */ | |
991 | lli_table_ptr->block_size -= (curr_table_data_size - table_data_size); | |
992 | ||
993 | /* update the physical address in the lli array */ | |
994 | lli_array_ptr[array_counter].physical_address += lli_table_ptr->block_size; | |
995 | ||
996 | /* update the block size left in the lli array */ | |
997 | lli_array_ptr[array_counter].block_size = (curr_table_data_size - table_data_size); | |
998 | } else | |
999 | /* advance to the next entry in the lli_array */ | |
1000 | array_counter++; | |
1001 | ||
1002 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1003 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1004 | ||
1005 | /* move to the next entry in table */ | |
1006 | lli_table_ptr++; | |
1007 | } | |
1008 | ||
1009 | /* set the info entry to default */ | |
1010 | lli_table_ptr->physical_address = 0xffffffff; | |
1011 | lli_table_ptr->block_size = 0; | |
1012 | ||
1013 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1014 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1015 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1016 | ||
d19cf32f AC |
1017 | /* set the output parameter */ |
1018 | *num_processed_entries_ptr += array_counter; | |
1019 | ||
1020 | edbg("SEP Driver:*num_processed_entries_ptr is %lu\n", *num_processed_entries_ptr); | |
d19cf32f | 1021 | dbg("SEP Driver:<-------- sep_build_lli_table end\n"); |
d19cf32f | 1022 | return; |
cd1bb431 MA |
1023 | } |
1024 | ||
1025 | /* | |
1026 | this function goes over the list of the print created tables and | |
1027 | prints all the data | |
1028 | */ | |
ca605bb6 | 1029 | static void sep_debug_print_lli_tables(struct sep_device *sep, struct sep_lli_entry_t *lli_table_ptr, unsigned long num_table_entries, unsigned long table_data_size) |
cd1bb431 | 1030 | { |
d19cf32f | 1031 | unsigned long table_count; |
d19cf32f | 1032 | unsigned long entries_count; |
cd1bb431 | 1033 | |
d19cf32f | 1034 | dbg("SEP Driver:--------> sep_debug_print_lli_tables start\n"); |
cd1bb431 | 1035 | |
d19cf32f AC |
1036 | table_count = 1; |
1037 | while ((unsigned long) lli_table_ptr != 0xffffffff) { | |
1038 | edbg("SEP Driver: lli table %08lx, table_data_size is %lu\n", table_count, table_data_size); | |
1039 | edbg("SEP Driver: num_table_entries is %lu\n", num_table_entries); | |
cd1bb431 | 1040 | |
d19cf32f AC |
1041 | /* print entries of the table (without info entry) */ |
1042 | for (entries_count = 0; entries_count < num_table_entries; entries_count++, lli_table_ptr++) { | |
1043 | edbg("SEP Driver:lli_table_ptr address is %08lx\n", (unsigned long) lli_table_ptr); | |
1044 | edbg("SEP Driver:phys address is %08lx block size is %lu\n", lli_table_ptr->physical_address, lli_table_ptr->block_size); | |
1045 | } | |
cd1bb431 | 1046 | |
d19cf32f AC |
1047 | /* point to the info entry */ |
1048 | lli_table_ptr--; | |
cd1bb431 | 1049 | |
d19cf32f AC |
1050 | edbg("SEP Driver:phys lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); |
1051 | edbg("SEP Driver:phys lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
cd1bb431 | 1052 | |
cd1bb431 | 1053 | |
d19cf32f AC |
1054 | table_data_size = lli_table_ptr->block_size & 0xffffff; |
1055 | num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff; | |
1056 | lli_table_ptr = (struct sep_lli_entry_t *) | |
1057 | (lli_table_ptr->physical_address); | |
cd1bb431 | 1058 | |
d19cf32f | 1059 | 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 | 1060 | |
d19cf32f | 1061 | if ((unsigned long) lli_table_ptr != 0xffffffff) |
70ae04e6 | 1062 | lli_table_ptr = (struct sep_lli_entry_t *) sep_shared_bus_to_virt(sep, (unsigned long) lli_table_ptr); |
d19cf32f AC |
1063 | |
1064 | table_count++; | |
1065 | } | |
d19cf32f | 1066 | dbg("SEP Driver:<-------- sep_debug_print_lli_tables end\n"); |
cd1bb431 MA |
1067 | } |
1068 | ||
1069 | ||
1070 | /* | |
0a18d7b5 AC |
1071 | This function prepares only input DMA table for synhronic symmetric |
1072 | operations (HASH) | |
cd1bb431 | 1073 | */ |
ca605bb6 AC |
1074 | static int sep_prepare_input_dma_table(struct sep_device *sep, |
1075 | unsigned long app_virt_addr, | |
1076 | unsigned long data_size, | |
1077 | unsigned long block_size, | |
1078 | unsigned long *lli_table_ptr, | |
1079 | unsigned long *num_entries_ptr, | |
1080 | unsigned long *table_data_size_ptr, | |
1081 | bool isKernelVirtualAddress) | |
cd1bb431 | 1082 | { |
0a18d7b5 AC |
1083 | /* pointer to the info entry of the table - the last entry */ |
1084 | struct sep_lli_entry_t *info_entry_ptr; | |
1085 | /* array of pointers ot page */ | |
1086 | struct sep_lli_entry_t *lli_array_ptr; | |
1087 | /* points to the first entry to be processed in the lli_in_array */ | |
1088 | unsigned long current_entry; | |
1089 | /* num entries in the virtual buffer */ | |
1090 | unsigned long sep_lli_entries; | |
1091 | /* lli table pointer */ | |
1092 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1093 | /* the total data in one table */ | |
1094 | unsigned long table_data_size; | |
1095 | /* number of entries in lli table */ | |
1096 | unsigned long num_entries_in_table; | |
1097 | /* next table address */ | |
790cf1b9 | 1098 | void *lli_table_alloc_addr; |
0a18d7b5 | 1099 | unsigned long result; |
cd1bb431 | 1100 | |
0a18d7b5 | 1101 | dbg("SEP Driver:--------> sep_prepare_input_dma_table start\n"); |
d19cf32f | 1102 | |
0a18d7b5 AC |
1103 | edbg("SEP Driver:data_size is %lu\n", data_size); |
1104 | edbg("SEP Driver:block_size is %lu\n", block_size); | |
d19cf32f | 1105 | |
0a18d7b5 | 1106 | /* initialize the pages pointers */ |
ca605bb6 AC |
1107 | sep->in_page_array = 0; |
1108 | sep->in_num_pages = 0; | |
d19cf32f | 1109 | |
0a18d7b5 AC |
1110 | if (data_size == 0) { |
1111 | /* special case - created 2 entries table with zero data */ | |
70ae04e6 | 1112 | in_lli_table_ptr = (struct sep_lli_entry_t *) (sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES); |
790cf1b9 | 1113 | /* FIXME: Should the entry below not be for _bus */ |
70ae04e6 | 1114 | in_lli_table_ptr->physical_address = (unsigned long)sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
0a18d7b5 AC |
1115 | in_lli_table_ptr->block_size = 0; |
1116 | ||
1117 | in_lli_table_ptr++; | |
1118 | in_lli_table_ptr->physical_address = 0xFFFFFFFF; | |
1119 | in_lli_table_ptr->block_size = 0; | |
1120 | ||
70ae04e6 | 1121 | *lli_table_ptr = sep->shared_bus + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
0a18d7b5 AC |
1122 | *num_entries_ptr = 2; |
1123 | *table_data_size_ptr = 0; | |
d19cf32f | 1124 | |
d19cf32f | 1125 | goto end_function; |
cd1bb431 | 1126 | } |
cd1bb431 | 1127 | |
0a18d7b5 AC |
1128 | /* check if the pages are in Kernel Virtual Address layout */ |
1129 | if (isKernelVirtualAddress == true) | |
1130 | /* lock the pages of the kernel buffer and translate them to pages */ | |
ca605bb6 | 1131 | result = sep_lock_kernel_pages(sep, app_virt_addr, data_size, &sep->in_num_pages, &lli_array_ptr, &sep->in_page_array); |
0a18d7b5 AC |
1132 | else |
1133 | /* lock the pages of the user buffer and translate them to pages */ | |
ca605bb6 | 1134 | result = sep_lock_user_pages(sep, app_virt_addr, data_size, &sep->in_num_pages, &lli_array_ptr, &sep->in_page_array); |
cd1bb431 | 1135 | |
0a18d7b5 AC |
1136 | if (result) |
1137 | return result; | |
cd1bb431 | 1138 | |
ca605bb6 | 1139 | edbg("SEP Driver:output sep->in_num_pages is %lu\n", sep->in_num_pages); |
cd1bb431 | 1140 | |
0a18d7b5 AC |
1141 | current_entry = 0; |
1142 | info_entry_ptr = 0; | |
ca605bb6 | 1143 | sep_lli_entries = sep->in_num_pages; |
d19cf32f | 1144 | |
0a18d7b5 | 1145 | /* initiate to point after the message area */ |
70ae04e6 | 1146 | lli_table_alloc_addr = sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
d19cf32f | 1147 | |
0a18d7b5 AC |
1148 | /* loop till all the entries in in array are not processed */ |
1149 | while (current_entry < sep_lli_entries) { | |
1150 | /* set the new input and output tables */ | |
1151 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
d19cf32f | 1152 | |
0a18d7b5 | 1153 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
d19cf32f | 1154 | |
0a18d7b5 AC |
1155 | /* calculate the maximum size of data for input table */ |
1156 | table_data_size = sep_calculate_lli_table_max_size(&lli_array_ptr[current_entry], (sep_lli_entries - current_entry)); | |
d19cf32f | 1157 | |
0a18d7b5 AC |
1158 | /* now calculate the table size so that it will be module block size */ |
1159 | table_data_size = (table_data_size / block_size) * block_size; | |
d19cf32f | 1160 | |
0a18d7b5 | 1161 | edbg("SEP Driver:output table_data_size is %lu\n", table_data_size); |
d19cf32f | 1162 | |
0a18d7b5 AC |
1163 | /* construct input lli table */ |
1164 | sep_build_lli_table(&lli_array_ptr[current_entry], in_lli_table_ptr, ¤t_entry, &num_entries_in_table, table_data_size); | |
d19cf32f | 1165 | |
0a18d7b5 AC |
1166 | if (info_entry_ptr == 0) { |
1167 | /* set the output parameters to physical addresses */ | |
70ae04e6 | 1168 | *lli_table_ptr = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 AC |
1169 | *num_entries_ptr = num_entries_in_table; |
1170 | *table_data_size_ptr = table_data_size; | |
d19cf32f | 1171 | |
0a18d7b5 AC |
1172 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_ptr); |
1173 | } else { | |
1174 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1175 | info_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 | 1176 | info_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); |
d19cf32f | 1177 | } |
0a18d7b5 AC |
1178 | |
1179 | /* save the pointer to the info entry of the current tables */ | |
1180 | info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
d19cf32f AC |
1181 | } |
1182 | ||
0a18d7b5 | 1183 | /* print input tables */ |
ca605bb6 | 1184 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1185 | sep_shared_bus_to_virt(sep, *lli_table_ptr), *num_entries_ptr, *table_data_size_ptr); |
d19cf32f | 1186 | |
0a18d7b5 AC |
1187 | /* the array of the pages */ |
1188 | kfree(lli_array_ptr); | |
f93e4bf9 | 1189 | end_function: |
0a18d7b5 | 1190 | dbg("SEP Driver:<-------- sep_prepare_input_dma_table end\n"); |
d19cf32f | 1191 | return 0; |
0a18d7b5 | 1192 | |
cd1bb431 MA |
1193 | } |
1194 | ||
1195 | /* | |
0a18d7b5 AC |
1196 | This function creates the input and output dma tables for |
1197 | symmetric operations (AES/DES) according to the block size from LLI arays | |
cd1bb431 | 1198 | */ |
ca605bb6 AC |
1199 | static int sep_construct_dma_tables_from_lli(struct sep_device *sep, |
1200 | struct sep_lli_entry_t *lli_in_array, | |
0a18d7b5 AC |
1201 | unsigned long sep_in_lli_entries, |
1202 | struct sep_lli_entry_t *lli_out_array, | |
1203 | unsigned long sep_out_lli_entries, | |
1204 | 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 | 1205 | { |
790cf1b9 AC |
1206 | /* points to the area where next lli table can be allocated: keep void * |
1207 | as there is pointer scaling to fix otherwise */ | |
1208 | void *lli_table_alloc_addr; | |
0a18d7b5 AC |
1209 | /* input lli table */ |
1210 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1211 | /* output lli table */ | |
1212 | struct sep_lli_entry_t *out_lli_table_ptr; | |
1213 | /* pointer to the info entry of the table - the last entry */ | |
1214 | struct sep_lli_entry_t *info_in_entry_ptr; | |
1215 | /* pointer to the info entry of the table - the last entry */ | |
1216 | struct sep_lli_entry_t *info_out_entry_ptr; | |
1217 | /* points to the first entry to be processed in the lli_in_array */ | |
1218 | unsigned long current_in_entry; | |
1219 | /* points to the first entry to be processed in the lli_out_array */ | |
1220 | unsigned long current_out_entry; | |
1221 | /* max size of the input table */ | |
1222 | unsigned long in_table_data_size; | |
1223 | /* max size of the output table */ | |
1224 | unsigned long out_table_data_size; | |
1225 | /* flag te signifies if this is the first tables build from the arrays */ | |
1226 | unsigned long first_table_flag; | |
1227 | /* the data size that should be in table */ | |
1228 | unsigned long table_data_size; | |
1229 | /* number of etnries in the input table */ | |
1230 | unsigned long num_entries_in_table; | |
1231 | /* number of etnries in the output table */ | |
1232 | unsigned long num_entries_out_table; | |
cd1bb431 | 1233 | |
0a18d7b5 | 1234 | dbg("SEP Driver:--------> sep_construct_dma_tables_from_lli start\n"); |
d19cf32f | 1235 | |
0a18d7b5 | 1236 | /* initiate to pint after the message area */ |
70ae04e6 | 1237 | lli_table_alloc_addr = sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
d19cf32f | 1238 | |
0a18d7b5 AC |
1239 | current_in_entry = 0; |
1240 | current_out_entry = 0; | |
1241 | first_table_flag = 1; | |
1242 | info_in_entry_ptr = 0; | |
1243 | info_out_entry_ptr = 0; | |
d19cf32f | 1244 | |
0a18d7b5 AC |
1245 | /* loop till all the entries in in array are not processed */ |
1246 | while (current_in_entry < sep_in_lli_entries) { | |
1247 | /* set the new input and output tables */ | |
1248 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 1249 | |
0a18d7b5 | 1250 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
cd1bb431 | 1251 | |
0a18d7b5 AC |
1252 | /* set the first output tables */ |
1253 | out_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 1254 | |
0a18d7b5 | 1255 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
d19cf32f | 1256 | |
0a18d7b5 AC |
1257 | /* calculate the maximum size of data for input table */ |
1258 | in_table_data_size = sep_calculate_lli_table_max_size(&lli_in_array[current_in_entry], (sep_in_lli_entries - current_in_entry)); | |
d19cf32f | 1259 | |
0a18d7b5 AC |
1260 | /* calculate the maximum size of data for output table */ |
1261 | out_table_data_size = sep_calculate_lli_table_max_size(&lli_out_array[current_out_entry], (sep_out_lli_entries - current_out_entry)); | |
d19cf32f | 1262 | |
0a18d7b5 AC |
1263 | edbg("SEP Driver:in_table_data_size is %lu\n", in_table_data_size); |
1264 | edbg("SEP Driver:out_table_data_size is %lu\n", out_table_data_size); | |
cd1bb431 | 1265 | |
0a18d7b5 AC |
1266 | /* check where the data is smallest */ |
1267 | table_data_size = in_table_data_size; | |
1268 | if (table_data_size > out_table_data_size) | |
1269 | table_data_size = out_table_data_size; | |
cd1bb431 | 1270 | |
0a18d7b5 AC |
1271 | /* now calculate the table size so that it will be module block size */ |
1272 | table_data_size = (table_data_size / block_size) * block_size; | |
cd1bb431 | 1273 | |
0a18d7b5 AC |
1274 | dbg("SEP Driver:table_data_size is %lu\n", table_data_size); |
1275 | ||
1276 | /* construct input lli table */ | |
1277 | sep_build_lli_table(&lli_in_array[current_in_entry], in_lli_table_ptr, ¤t_in_entry, &num_entries_in_table, table_data_size); | |
1278 | ||
1279 | /* construct output lli table */ | |
1280 | sep_build_lli_table(&lli_out_array[current_out_entry], out_lli_table_ptr, ¤t_out_entry, &num_entries_out_table, table_data_size); | |
1281 | ||
1282 | /* if info entry is null - this is the first table built */ | |
1283 | if (info_in_entry_ptr == 0) { | |
1284 | /* set the output parameters to physical addresses */ | |
70ae04e6 | 1285 | *lli_table_in_ptr = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 | 1286 | *in_num_entries_ptr = num_entries_in_table; |
70ae04e6 | 1287 | *lli_table_out_ptr = sep_shared_virt_to_bus(sep, out_lli_table_ptr); |
0a18d7b5 AC |
1288 | *out_num_entries_ptr = num_entries_out_table; |
1289 | *table_data_size_ptr = table_data_size; | |
1290 | ||
1291 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr); | |
1292 | edbg("SEP Driver:output lli_table_out_ptr is %08lx\n", *lli_table_out_ptr); | |
1293 | } else { | |
1294 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1295 | info_in_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 AC |
1296 | info_in_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); |
1297 | ||
1298 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1299 | info_out_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, out_lli_table_ptr); |
0a18d7b5 | 1300 | info_out_entry_ptr->block_size = ((num_entries_out_table) << 24) | (table_data_size); |
d19cf32f AC |
1301 | } |
1302 | ||
0a18d7b5 AC |
1303 | /* save the pointer to the info entry of the current tables */ |
1304 | info_in_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
1305 | info_out_entry_ptr = out_lli_table_ptr + num_entries_out_table - 1; | |
1306 | ||
1307 | edbg("SEP Driver:output num_entries_out_table is %lu\n", (unsigned long) num_entries_out_table); | |
1308 | edbg("SEP Driver:output info_in_entry_ptr is %lu\n", (unsigned long) info_in_entry_ptr); | |
1309 | edbg("SEP Driver:output info_out_entry_ptr is %lu\n", (unsigned long) info_out_entry_ptr); | |
d19cf32f | 1310 | } |
0a18d7b5 AC |
1311 | |
1312 | /* print input tables */ | |
ca605bb6 | 1313 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1314 | sep_shared_bus_to_virt(sep, *lli_table_in_ptr), *in_num_entries_ptr, *table_data_size_ptr); |
0a18d7b5 | 1315 | /* print output tables */ |
ca605bb6 | 1316 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1317 | sep_shared_bus_to_virt(sep, *lli_table_out_ptr), *out_num_entries_ptr, *table_data_size_ptr); |
0a18d7b5 | 1318 | dbg("SEP Driver:<-------- sep_construct_dma_tables_from_lli end\n"); |
d19cf32f | 1319 | return 0; |
cd1bb431 MA |
1320 | } |
1321 | ||
0a18d7b5 | 1322 | |
cd1bb431 | 1323 | /* |
0a18d7b5 AC |
1324 | This function builds input and output DMA tables for synhronic |
1325 | symmetric operations (AES, DES). It also checks that each table | |
1326 | is of the modular block size | |
cd1bb431 | 1327 | */ |
ca605bb6 AC |
1328 | static int sep_prepare_input_output_dma_table(struct sep_device *sep, |
1329 | unsigned long app_virt_in_addr, | |
0a18d7b5 AC |
1330 | unsigned long app_virt_out_addr, |
1331 | unsigned long data_size, | |
1332 | unsigned long block_size, | |
1333 | 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 | 1334 | { |
0a18d7b5 AC |
1335 | /* array of pointers of page */ |
1336 | struct sep_lli_entry_t *lli_in_array; | |
1337 | /* array of pointers of page */ | |
1338 | struct sep_lli_entry_t *lli_out_array; | |
1339 | int result = 0; | |
cd1bb431 | 1340 | |
0a18d7b5 AC |
1341 | dbg("SEP Driver:--------> sep_prepare_input_output_dma_table start\n"); |
1342 | ||
1343 | /* initialize the pages pointers */ | |
ca605bb6 AC |
1344 | sep->in_page_array = 0; |
1345 | sep->out_page_array = 0; | |
0a18d7b5 AC |
1346 | |
1347 | /* check if the pages are in Kernel Virtual Address layout */ | |
1348 | if (isKernelVirtualAddress == true) { | |
1349 | /* lock the pages of the kernel buffer and translate them to pages */ | |
ca605bb6 | 1350 | result = sep_lock_kernel_pages(sep, app_virt_in_addr, data_size, &sep->in_num_pages, &lli_in_array, &sep->in_page_array); |
0a18d7b5 AC |
1351 | if (result) { |
1352 | edbg("SEP Driver: sep_lock_kernel_pages for input virtual buffer failed\n"); | |
1353 | goto end_function; | |
d19cf32f AC |
1354 | } |
1355 | } else { | |
0a18d7b5 | 1356 | /* lock the pages of the user buffer and translate them to pages */ |
ca605bb6 | 1357 | result = sep_lock_user_pages(sep, app_virt_in_addr, data_size, &sep->in_num_pages, &lli_in_array, &sep->in_page_array); |
0a18d7b5 AC |
1358 | if (result) { |
1359 | edbg("SEP Driver: sep_lock_user_pages for input virtual buffer failed\n"); | |
1360 | goto end_function; | |
1361 | } | |
cd1bb431 | 1362 | } |
cd1bb431 | 1363 | |
0a18d7b5 | 1364 | if (isKernelVirtualAddress == true) { |
ca605bb6 | 1365 | result = sep_lock_kernel_pages(sep, app_virt_out_addr, data_size, &sep->out_num_pages, &lli_out_array, &sep->out_page_array); |
0a18d7b5 AC |
1366 | if (result) { |
1367 | edbg("SEP Driver: sep_lock_kernel_pages for output virtual buffer failed\n"); | |
1368 | goto end_function_with_error1; | |
1369 | } | |
1370 | } else { | |
ca605bb6 | 1371 | result = sep_lock_user_pages(sep, app_virt_out_addr, data_size, &sep->out_num_pages, &lli_out_array, &sep->out_page_array); |
0a18d7b5 AC |
1372 | if (result) { |
1373 | edbg("SEP Driver: sep_lock_user_pages for output virtual buffer failed\n"); | |
1374 | goto end_function_with_error1; | |
1375 | } | |
1376 | } | |
ca605bb6 AC |
1377 | edbg("sep->in_num_pages is %lu\n", sep->in_num_pages); |
1378 | edbg("sep->out_num_pages is %lu\n", sep->out_num_pages); | |
0a18d7b5 AC |
1379 | edbg("SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n", SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); |
1380 | ||
1381 | ||
1382 | /* call the fucntion that creates table from the lli arrays */ | |
ca605bb6 | 1383 | result = sep_construct_dma_tables_from_lli(sep, lli_in_array, sep->in_num_pages, lli_out_array, sep->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); |
0a18d7b5 AC |
1384 | if (result) { |
1385 | edbg("SEP Driver: sep_construct_dma_tables_from_lli failed\n"); | |
1386 | goto end_function_with_error2; | |
1387 | } | |
1388 | ||
1389 | /* fall through - free the lli entry arrays */ | |
1390 | dbg("in_num_entries_ptr is %08lx\n", *in_num_entries_ptr); | |
1391 | dbg("out_num_entries_ptr is %08lx\n", *out_num_entries_ptr); | |
1392 | dbg("table_data_size_ptr is %08lx\n", *table_data_size_ptr); | |
1393 | end_function_with_error2: | |
1394 | kfree(lli_out_array); | |
1395 | end_function_with_error1: | |
1396 | kfree(lli_in_array); | |
1397 | end_function: | |
1398 | dbg("SEP Driver:<-------- sep_prepare_input_output_dma_table end result = %d\n", (int) result); | |
1399 | return result; | |
cd1bb431 | 1400 | |
cd1bb431 MA |
1401 | } |
1402 | ||
1403 | /* | |
0a18d7b5 AC |
1404 | this function handles tha request for creation of the DMA table |
1405 | for the synchronic symmetric operations (AES,DES) | |
cd1bb431 | 1406 | */ |
ca605bb6 AC |
1407 | static int sep_create_sync_dma_tables_handler(struct sep_device *sep, |
1408 | unsigned long arg) | |
cd1bb431 | 1409 | { |
0a18d7b5 AC |
1410 | int error; |
1411 | /* command arguments */ | |
1412 | struct sep_driver_build_sync_table_t command_args; | |
cd1bb431 | 1413 | |
0a18d7b5 | 1414 | dbg("SEP Driver:--------> sep_create_sync_dma_tables_handler start\n"); |
cd1bb431 | 1415 | |
0a18d7b5 AC |
1416 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_sync_table_t)); |
1417 | if (error) | |
1418 | goto end_function; | |
cd1bb431 | 1419 | |
0a18d7b5 AC |
1420 | edbg("app_in_address is %08lx\n", command_args.app_in_address); |
1421 | edbg("app_out_address is %08lx\n", command_args.app_out_address); | |
1422 | edbg("data_size is %lu\n", command_args.data_in_size); | |
1423 | edbg("block_size is %lu\n", command_args.block_size); | |
cd1bb431 | 1424 | |
0a18d7b5 AC |
1425 | /* check if we need to build only input table or input/output */ |
1426 | if (command_args.app_out_address) | |
1427 | /* prepare input and output tables */ | |
ca605bb6 AC |
1428 | error = sep_prepare_input_output_dma_table(sep, |
1429 | command_args.app_in_address, | |
0a18d7b5 AC |
1430 | command_args.app_out_address, |
1431 | command_args.data_in_size, | |
1432 | command_args.block_size, | |
1433 | &command_args.in_table_address, | |
1434 | &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); | |
1435 | else | |
1436 | /* prepare input tables */ | |
ca605bb6 AC |
1437 | error = sep_prepare_input_dma_table(sep, |
1438 | command_args.app_in_address, | |
0a18d7b5 AC |
1439 | 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); |
1440 | ||
1441 | if (error) | |
1442 | goto end_function; | |
1443 | /* copy to user */ | |
51faa9d2 AC |
1444 | if (copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_build_sync_table_t))) |
1445 | error = -EFAULT; | |
0a18d7b5 AC |
1446 | end_function: |
1447 | dbg("SEP Driver:<-------- sep_create_sync_dma_tables_handler end\n"); | |
1448 | return error; | |
cd1bb431 MA |
1449 | } |
1450 | ||
1451 | /* | |
0a18d7b5 | 1452 | this function handles the request for freeing dma table for synhronic actions |
cd1bb431 | 1453 | */ |
ca605bb6 | 1454 | static int sep_free_dma_table_data_handler(struct sep_device *sep) |
cd1bb431 | 1455 | { |
0a18d7b5 | 1456 | dbg("SEP Driver:--------> sep_free_dma_table_data_handler start\n"); |
cd1bb431 | 1457 | |
0a18d7b5 | 1458 | /* free input pages array */ |
ca605bb6 | 1459 | sep_free_dma_pages(sep->in_page_array, sep->in_num_pages, 0); |
cd1bb431 | 1460 | |
0a18d7b5 | 1461 | /* free output pages array if needed */ |
ca605bb6 AC |
1462 | if (sep->out_page_array) |
1463 | sep_free_dma_pages(sep->out_page_array, sep->out_num_pages, 1); | |
cd1bb431 | 1464 | |
0a18d7b5 | 1465 | /* reset all the values */ |
ca605bb6 AC |
1466 | sep->in_page_array = 0; |
1467 | sep->out_page_array = 0; | |
1468 | sep->in_num_pages = 0; | |
1469 | sep->out_num_pages = 0; | |
0a18d7b5 AC |
1470 | dbg("SEP Driver:<-------- sep_free_dma_table_data_handler end\n"); |
1471 | return 0; | |
1472 | } | |
cd1bb431 MA |
1473 | |
1474 | /* | |
0a18d7b5 | 1475 | this function find a space for the new flow dma table |
cd1bb431 | 1476 | */ |
ca605bb6 AC |
1477 | static int sep_find_free_flow_dma_table_space(struct sep_device *sep, |
1478 | unsigned long **table_address_ptr) | |
cd1bb431 | 1479 | { |
0a18d7b5 AC |
1480 | int error = 0; |
1481 | /* pointer to the id field of the flow dma table */ | |
1482 | unsigned long *start_table_ptr; | |
790cf1b9 AC |
1483 | /* Do not make start_addr unsigned long * unless fixing the offset |
1484 | computations ! */ | |
1485 | void *flow_dma_area_start_addr; | |
1486 | unsigned long *flow_dma_area_end_addr; | |
0a18d7b5 AC |
1487 | /* maximum table size in words */ |
1488 | unsigned long table_size_in_words; | |
cd1bb431 | 1489 | |
0a18d7b5 | 1490 | /* find the start address of the flow DMA table area */ |
70ae04e6 | 1491 | flow_dma_area_start_addr = sep->shared_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
cd1bb431 | 1492 | |
0a18d7b5 AC |
1493 | /* set end address of the flow table area */ |
1494 | flow_dma_area_end_addr = flow_dma_area_start_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES; | |
cd1bb431 | 1495 | |
0a18d7b5 AC |
1496 | /* set table size in words */ |
1497 | table_size_in_words = SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE * (sizeof(struct sep_lli_entry_t) / sizeof(long)) + 2; | |
d19cf32f | 1498 | |
0a18d7b5 | 1499 | /* set the pointer to the start address of DMA area */ |
790cf1b9 | 1500 | start_table_ptr = flow_dma_area_start_addr; |
cd1bb431 | 1501 | |
0a18d7b5 | 1502 | /* find the space for the next table */ |
790cf1b9 | 1503 | while (((*start_table_ptr & 0x7FFFFFFF) != 0) && start_table_ptr < flow_dma_area_end_addr) |
0a18d7b5 | 1504 | start_table_ptr += table_size_in_words; |
cd1bb431 | 1505 | |
0a18d7b5 | 1506 | /* check if we reached the end of floa tables area */ |
790cf1b9 | 1507 | if (start_table_ptr >= flow_dma_area_end_addr) |
0a18d7b5 AC |
1508 | error = -1; |
1509 | else | |
1510 | *table_address_ptr = start_table_ptr; | |
cd1bb431 | 1511 | |
d19cf32f | 1512 | return error; |
cd1bb431 MA |
1513 | } |
1514 | ||
1515 | /* | |
0a18d7b5 AC |
1516 | This function creates one DMA table for flow and returns its data, |
1517 | and pointer to its info entry | |
cd1bb431 | 1518 | */ |
ca605bb6 AC |
1519 | static int sep_prepare_one_flow_dma_table(struct sep_device *sep, |
1520 | unsigned long virt_buff_addr, | |
1521 | unsigned long virt_buff_size, | |
1522 | struct sep_lli_entry_t *table_data, | |
1523 | struct sep_lli_entry_t **info_entry_ptr, | |
1524 | struct sep_flow_context_t *flow_data_ptr, | |
1525 | bool isKernelVirtualAddress) | |
cd1bb431 | 1526 | { |
d19cf32f | 1527 | int error; |
0a18d7b5 AC |
1528 | /* the range in pages */ |
1529 | unsigned long lli_array_size; | |
1530 | struct sep_lli_entry_t *lli_array; | |
1531 | struct sep_lli_entry_t *flow_dma_table_entry_ptr; | |
1532 | unsigned long *start_dma_table_ptr; | |
1533 | /* total table data counter */ | |
1534 | unsigned long dma_table_data_count; | |
1535 | /* pointer that will keep the pointer to the pages of the virtual buffer */ | |
1536 | struct page **page_array_ptr; | |
1537 | unsigned long entry_count; | |
cd1bb431 | 1538 | |
0a18d7b5 | 1539 | /* find the space for the new table */ |
ca605bb6 | 1540 | error = sep_find_free_flow_dma_table_space(sep, &start_dma_table_ptr); |
d19cf32f AC |
1541 | if (error) |
1542 | goto end_function; | |
cd1bb431 | 1543 | |
0a18d7b5 AC |
1544 | /* check if the pages are in Kernel Virtual Address layout */ |
1545 | if (isKernelVirtualAddress == true) | |
1546 | /* lock kernel buffer in the memory */ | |
ca605bb6 | 1547 | error = sep_lock_kernel_pages(sep, virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); |
0a18d7b5 AC |
1548 | else |
1549 | /* lock user buffer in the memory */ | |
ca605bb6 | 1550 | error = sep_lock_user_pages(sep, virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); |
cd1bb431 | 1551 | |
d19cf32f AC |
1552 | if (error) |
1553 | goto end_function; | |
cd1bb431 | 1554 | |
0a18d7b5 AC |
1555 | /* set the pointer to page array at the beginning of table - this table is |
1556 | now considered taken */ | |
1557 | *start_dma_table_ptr = lli_array_size; | |
cd1bb431 | 1558 | |
0a18d7b5 AC |
1559 | /* point to the place of the pages pointers of the table */ |
1560 | start_dma_table_ptr++; | |
cd1bb431 | 1561 | |
0a18d7b5 AC |
1562 | /* set the pages pointer */ |
1563 | *start_dma_table_ptr = (unsigned long) page_array_ptr; | |
1564 | ||
1565 | /* set the pointer to the first entry */ | |
1566 | flow_dma_table_entry_ptr = (struct sep_lli_entry_t *) (++start_dma_table_ptr); | |
1567 | ||
1568 | /* now create the entries for table */ | |
1569 | for (dma_table_data_count = entry_count = 0; entry_count < lli_array_size; entry_count++) { | |
1570 | flow_dma_table_entry_ptr->physical_address = lli_array[entry_count].physical_address; | |
1571 | ||
1572 | flow_dma_table_entry_ptr->block_size = lli_array[entry_count].block_size; | |
1573 | ||
1574 | /* set the total data of a table */ | |
1575 | dma_table_data_count += lli_array[entry_count].block_size; | |
1576 | ||
1577 | flow_dma_table_entry_ptr++; | |
d19cf32f | 1578 | } |
0a18d7b5 AC |
1579 | |
1580 | /* set the physical address */ | |
1581 | table_data->physical_address = virt_to_phys(start_dma_table_ptr); | |
1582 | ||
1583 | /* set the num_entries and total data size */ | |
1584 | table_data->block_size = ((lli_array_size + 1) << SEP_NUM_ENTRIES_OFFSET_IN_BITS) | (dma_table_data_count); | |
1585 | ||
1586 | /* set the info entry */ | |
1587 | flow_dma_table_entry_ptr->physical_address = 0xffffffff; | |
1588 | flow_dma_table_entry_ptr->block_size = 0; | |
1589 | ||
1590 | /* set the pointer to info entry */ | |
1591 | *info_entry_ptr = flow_dma_table_entry_ptr; | |
1592 | ||
1593 | /* the array of the lli entries */ | |
1594 | kfree(lli_array); | |
f93e4bf9 | 1595 | end_function: |
d19cf32f | 1596 | return error; |
cd1bb431 MA |
1597 | } |
1598 | ||
0a18d7b5 AC |
1599 | |
1600 | ||
cd1bb431 | 1601 | /* |
0a18d7b5 AC |
1602 | This function creates a list of tables for flow and returns the data for |
1603 | the first and last tables of the list | |
cd1bb431 | 1604 | */ |
ca605bb6 AC |
1605 | static int sep_prepare_flow_dma_tables(struct sep_device *sep, |
1606 | unsigned long num_virtual_buffers, | |
1607 | 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 | 1608 | { |
d19cf32f | 1609 | int error; |
0a18d7b5 AC |
1610 | unsigned long virt_buff_addr; |
1611 | unsigned long virt_buff_size; | |
1612 | struct sep_lli_entry_t table_data; | |
1613 | struct sep_lli_entry_t *info_entry_ptr; | |
1614 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
1615 | unsigned long i; | |
cd1bb431 | 1616 | |
0a18d7b5 AC |
1617 | /* init vars */ |
1618 | error = 0; | |
1619 | prev_info_entry_ptr = 0; | |
cd1bb431 | 1620 | |
0a18d7b5 AC |
1621 | /* init the first table to default */ |
1622 | table_data.physical_address = 0xffffffff; | |
1623 | first_table_data_ptr->physical_address = 0xffffffff; | |
1624 | table_data.block_size = 0; | |
cd1bb431 | 1625 | |
0a18d7b5 AC |
1626 | for (i = 0; i < num_virtual_buffers; i++) { |
1627 | /* get the virtual buffer address */ | |
1628 | error = get_user(virt_buff_addr, &first_buff_addr); | |
1629 | if (error) | |
1630 | goto end_function; | |
cd1bb431 | 1631 | |
0a18d7b5 AC |
1632 | /* get the virtual buffer size */ |
1633 | first_buff_addr++; | |
1634 | error = get_user(virt_buff_size, &first_buff_addr); | |
1635 | if (error) | |
1636 | goto end_function; | |
cd1bb431 | 1637 | |
0a18d7b5 AC |
1638 | /* advance the address to point to the next pair of address|size */ |
1639 | first_buff_addr++; | |
cd1bb431 | 1640 | |
0a18d7b5 | 1641 | /* now prepare the one flow LLI table from the data */ |
ca605bb6 | 1642 | error = sep_prepare_one_flow_dma_table(sep, virt_buff_addr, virt_buff_size, &table_data, &info_entry_ptr, flow_data_ptr, isKernelVirtualAddress); |
0a18d7b5 AC |
1643 | if (error) |
1644 | goto end_function; | |
1645 | ||
1646 | if (i == 0) { | |
1647 | /* if this is the first table - save it to return to the user | |
1648 | application */ | |
1649 | *first_table_data_ptr = table_data; | |
1650 | ||
1651 | /* set the pointer to info entry */ | |
1652 | prev_info_entry_ptr = info_entry_ptr; | |
1653 | } else { | |
1654 | /* not first table - the previous table info entry should | |
1655 | be updated */ | |
1656 | prev_info_entry_ptr->block_size = (0x1 << SEP_INT_FLAG_OFFSET_IN_BITS) | (table_data.block_size); | |
1657 | ||
1658 | /* set the pointer to info entry */ | |
1659 | prev_info_entry_ptr = info_entry_ptr; | |
1660 | } | |
d19cf32f | 1661 | } |
cd1bb431 | 1662 | |
0a18d7b5 AC |
1663 | /* set the last table data */ |
1664 | *last_table_data_ptr = table_data; | |
f93e4bf9 | 1665 | end_function: |
d19cf32f | 1666 | return error; |
cd1bb431 MA |
1667 | } |
1668 | ||
cd1bb431 | 1669 | /* |
0a18d7b5 AC |
1670 | this function goes over all the flow tables connected to the given |
1671 | table and deallocate them | |
cd1bb431 | 1672 | */ |
0a18d7b5 | 1673 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr) |
cd1bb431 | 1674 | { |
0a18d7b5 AC |
1675 | /* id pointer */ |
1676 | unsigned long *table_ptr; | |
1677 | /* end address of the flow dma area */ | |
1678 | unsigned long num_entries; | |
1679 | unsigned long num_pages; | |
1680 | struct page **pages_ptr; | |
1681 | /* maximum table size in words */ | |
1682 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1683 | |
0a18d7b5 AC |
1684 | /* set the pointer to the first table */ |
1685 | table_ptr = (unsigned long *) first_table_ptr->physical_address; | |
cd1bb431 | 1686 | |
0a18d7b5 AC |
1687 | /* set the num of entries */ |
1688 | num_entries = (first_table_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) | |
1689 | & SEP_NUM_ENTRIES_MASK; | |
cd1bb431 | 1690 | |
0a18d7b5 AC |
1691 | /* go over all the connected tables */ |
1692 | while (*table_ptr != 0xffffffff) { | |
1693 | /* get number of pages */ | |
1694 | num_pages = *(table_ptr - 2); | |
d19cf32f | 1695 | |
0a18d7b5 AC |
1696 | /* get the pointer to the pages */ |
1697 | pages_ptr = (struct page **) (*(table_ptr - 1)); | |
cd1bb431 | 1698 | |
0a18d7b5 AC |
1699 | /* free the pages */ |
1700 | sep_free_dma_pages(pages_ptr, num_pages, 1); | |
1701 | ||
1702 | /* goto to the info entry */ | |
1703 | info_entry_ptr = ((struct sep_lli_entry_t *) table_ptr) + (num_entries - 1); | |
1704 | ||
1705 | table_ptr = (unsigned long *) info_entry_ptr->physical_address; | |
1706 | num_entries = (info_entry_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1707 | } | |
1708 | ||
1709 | return; | |
cd1bb431 MA |
1710 | } |
1711 | ||
3cacf729 AC |
1712 | /** |
1713 | * sep_find_flow_context - find a flow | |
1714 | * @sep: the SEP we are working with | |
1715 | * @flow_id: flow identifier | |
1716 | * | |
1717 | * Returns a pointer the matching flow, or NULL if the flow does not | |
1718 | * exist. | |
1719 | */ | |
ca605bb6 | 1720 | |
3cacf729 AC |
1721 | static struct sep_flow_context_t *sep_find_flow_context(struct sep_device *sep, |
1722 | unsigned long flow_id) | |
cd1bb431 | 1723 | { |
3cacf729 | 1724 | int count; |
0a18d7b5 | 1725 | /* |
3cacf729 AC |
1726 | * always search for flow with id default first - in case we |
1727 | * already started working on the flow there can be no situation | |
1728 | * when 2 flows are with default flag | |
0a18d7b5 AC |
1729 | */ |
1730 | for (count = 0; count < SEP_DRIVER_NUM_FLOWS; count++) { | |
3cacf729 AC |
1731 | if (sep->flows[count].flow_id == flow_id) |
1732 | return &sep->flows[count]; | |
0a18d7b5 | 1733 | } |
3cacf729 | 1734 | return NULL; |
cd1bb431 MA |
1735 | } |
1736 | ||
0a18d7b5 | 1737 | |
cd1bb431 MA |
1738 | /* |
1739 | this function handles the request to create the DMA tables for flow | |
1740 | */ | |
ca605bb6 AC |
1741 | static int sep_create_flow_dma_tables_handler(struct sep_device *sep, |
1742 | unsigned long arg) | |
cd1bb431 | 1743 | { |
d19cf32f | 1744 | int error; |
d19cf32f | 1745 | struct sep_driver_build_flow_table_t command_args; |
d19cf32f AC |
1746 | /* first table - output */ |
1747 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1748 | /* dma table data */ |
1749 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1750 | /* pointer to the info entry of the previuos DMA table */ |
1751 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
d19cf32f AC |
1752 | /* pointer to the flow data strucutre */ |
1753 | struct sep_flow_context_t *flow_context_ptr; | |
cd1bb431 | 1754 | |
d19cf32f | 1755 | dbg("SEP Driver:--------> sep_create_flow_dma_tables_handler start\n"); |
cd1bb431 | 1756 | |
d19cf32f AC |
1757 | /* init variables */ |
1758 | prev_info_entry_ptr = 0; | |
1759 | first_table_data.physical_address = 0xffffffff; | |
cd1bb431 | 1760 | |
d19cf32f | 1761 | /* find the free structure for flow data */ |
3cacf729 AC |
1762 | flow_context_ptr = sep_find_flow_context(sep, SEP_FREE_FLOW_ID); |
1763 | if (flow_context_ptr == NULL) | |
d19cf32f | 1764 | goto end_function; |
cd1bb431 | 1765 | |
d19cf32f AC |
1766 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_flow_table_t)); |
1767 | if (error) | |
1768 | goto end_function; | |
cd1bb431 | 1769 | |
d19cf32f | 1770 | /* create flow tables */ |
ca605bb6 | 1771 | error = sep_prepare_flow_dma_tables(sep, command_args.num_virtual_buffers, command_args.virt_buff_data_addr, flow_context_ptr, &first_table_data, &last_table_data, command_args.isKernelVirtualAddress); |
d19cf32f AC |
1772 | if (error) |
1773 | goto end_function_with_error; | |
cd1bb431 | 1774 | |
d19cf32f AC |
1775 | /* check if flow is static */ |
1776 | if (!command_args.flow_type) | |
1777 | /* point the info entry of the last to the info entry of the first */ | |
1778 | last_table_data = first_table_data; | |
cd1bb431 | 1779 | |
d19cf32f AC |
1780 | /* set output params */ |
1781 | command_args.first_table_addr = first_table_data.physical_address; | |
1782 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1783 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1784 | |
d19cf32f AC |
1785 | /* send the parameters to user application */ |
1786 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_build_flow_table_t)); | |
1787 | if (error) | |
1788 | goto end_function_with_error; | |
cd1bb431 | 1789 | |
d19cf32f AC |
1790 | /* all the flow created - update the flow entry with temp id */ |
1791 | flow_context_ptr->flow_id = SEP_TEMP_FLOW_ID; | |
cd1bb431 | 1792 | |
d19cf32f AC |
1793 | /* set the processing tables data in the context */ |
1794 | if (command_args.input_output_flag == SEP_DRIVER_IN_FLAG) | |
1795 | flow_context_ptr->input_tables_in_process = first_table_data; | |
1796 | else | |
1797 | flow_context_ptr->output_tables_in_process = first_table_data; | |
cd1bb431 | 1798 | |
d19cf32f | 1799 | goto end_function; |
cd1bb431 | 1800 | |
f93e4bf9 | 1801 | end_function_with_error: |
d19cf32f AC |
1802 | /* free the allocated tables */ |
1803 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1804 | end_function: |
d19cf32f | 1805 | dbg("SEP Driver:<-------- sep_create_flow_dma_tables_handler end\n"); |
d19cf32f | 1806 | return error; |
cd1bb431 MA |
1807 | } |
1808 | ||
1809 | /* | |
ca605bb6 | 1810 | this function handles add tables to flow |
cd1bb431 | 1811 | */ |
ca605bb6 | 1812 | static int sep_add_flow_tables_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1813 | { |
d19cf32f | 1814 | int error; |
d19cf32f | 1815 | unsigned long num_entries; |
d19cf32f | 1816 | struct sep_driver_add_flow_table_t command_args; |
d19cf32f | 1817 | struct sep_flow_context_t *flow_context_ptr; |
d19cf32f AC |
1818 | /* first dma table data */ |
1819 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1820 | /* last dma table data */ |
1821 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1822 | /* pointer to the info entry of the current DMA table */ |
1823 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1824 | |
d19cf32f | 1825 | dbg("SEP Driver:--------> sep_add_flow_tables_handler start\n"); |
cd1bb431 | 1826 | |
d19cf32f AC |
1827 | /* get input parameters */ |
1828 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_flow_table_t)); | |
1829 | if (error) | |
1830 | goto end_function; | |
cd1bb431 | 1831 | |
d19cf32f | 1832 | /* find the flow structure for the flow id */ |
3cacf729 AC |
1833 | flow_context_ptr = sep_find_flow_context(sep, command_args.flow_id); |
1834 | if (flow_context_ptr == NULL) | |
d19cf32f | 1835 | goto end_function; |
cd1bb431 | 1836 | |
d19cf32f | 1837 | /* prepare the flow dma tables */ |
ca605bb6 | 1838 | error = sep_prepare_flow_dma_tables(sep, command_args.num_virtual_buffers, command_args.virt_buff_data_addr, flow_context_ptr, &first_table_data, &last_table_data, command_args.isKernelVirtualAddress); |
d19cf32f AC |
1839 | if (error) |
1840 | goto end_function_with_error; | |
cd1bb431 | 1841 | |
d19cf32f AC |
1842 | /* now check if there is already an existing add table for this flow */ |
1843 | if (command_args.inputOutputFlag == SEP_DRIVER_IN_FLAG) { | |
1844 | /* this buffer was for input buffers */ | |
1845 | if (flow_context_ptr->input_tables_flag) { | |
1846 | /* add table already exists - add the new tables to the end | |
1847 | of the previous */ | |
1848 | num_entries = (flow_context_ptr->last_input_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1849 | ||
1850 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1851 | (flow_context_ptr->last_input_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1852 | ||
1853 | /* connect to list of tables */ | |
1854 | *info_entry_ptr = first_table_data; | |
1855 | ||
1856 | /* set the first table data */ | |
1857 | first_table_data = flow_context_ptr->first_input_table; | |
1858 | } else { | |
1859 | /* set the input flag */ | |
1860 | flow_context_ptr->input_tables_flag = 1; | |
1861 | ||
1862 | /* set the first table data */ | |
1863 | flow_context_ptr->first_input_table = first_table_data; | |
1864 | } | |
1865 | /* set the last table data */ | |
1866 | flow_context_ptr->last_input_table = last_table_data; | |
1867 | } else { /* this is output tables */ | |
1868 | ||
1869 | /* this buffer was for input buffers */ | |
1870 | if (flow_context_ptr->output_tables_flag) { | |
1871 | /* add table already exists - add the new tables to | |
1872 | the end of the previous */ | |
1873 | num_entries = (flow_context_ptr->last_output_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1874 | ||
1875 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1876 | (flow_context_ptr->last_output_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1877 | ||
1878 | /* connect to list of tables */ | |
1879 | *info_entry_ptr = first_table_data; | |
1880 | ||
1881 | /* set the first table data */ | |
1882 | first_table_data = flow_context_ptr->first_output_table; | |
1883 | } else { | |
1884 | /* set the input flag */ | |
1885 | flow_context_ptr->output_tables_flag = 1; | |
1886 | ||
1887 | /* set the first table data */ | |
1888 | flow_context_ptr->first_output_table = first_table_data; | |
1889 | } | |
1890 | /* set the last table data */ | |
1891 | flow_context_ptr->last_output_table = last_table_data; | |
cd1bb431 | 1892 | } |
cd1bb431 | 1893 | |
d19cf32f AC |
1894 | /* set output params */ |
1895 | command_args.first_table_addr = first_table_data.physical_address; | |
1896 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1897 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1898 | |
d19cf32f AC |
1899 | /* send the parameters to user application */ |
1900 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_add_flow_table_t)); | |
f93e4bf9 | 1901 | end_function_with_error: |
d19cf32f AC |
1902 | /* free the allocated tables */ |
1903 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1904 | end_function: |
d19cf32f | 1905 | dbg("SEP Driver:<-------- sep_add_flow_tables_handler end\n"); |
d19cf32f | 1906 | return error; |
cd1bb431 MA |
1907 | } |
1908 | ||
1909 | /* | |
1910 | this function add the flow add message to the specific flow | |
1911 | */ | |
ca605bb6 | 1912 | static int sep_add_flow_tables_message_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1913 | { |
d19cf32f | 1914 | int error; |
d19cf32f | 1915 | struct sep_driver_add_message_t command_args; |
d19cf32f | 1916 | struct sep_flow_context_t *flow_context_ptr; |
cd1bb431 | 1917 | |
d19cf32f | 1918 | dbg("SEP Driver:--------> sep_add_flow_tables_message_handler start\n"); |
cd1bb431 | 1919 | |
d19cf32f AC |
1920 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_message_t)); |
1921 | if (error) | |
1922 | goto end_function; | |
cd1bb431 | 1923 | |
d19cf32f AC |
1924 | /* check input */ |
1925 | if (command_args.message_size_in_bytes > SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES) { | |
1926 | error = -ENOMEM; | |
1927 | goto end_function; | |
1928 | } | |
cd1bb431 | 1929 | |
d19cf32f | 1930 | /* find the flow context */ |
3cacf729 AC |
1931 | flow_context_ptr = sep_find_flow_context(sep, command_args.flow_id); |
1932 | if (flow_context_ptr == NULL) | |
d19cf32f | 1933 | goto end_function; |
cd1bb431 | 1934 | |
d19cf32f AC |
1935 | /* copy the message into context */ |
1936 | flow_context_ptr->message_size_in_bytes = command_args.message_size_in_bytes; | |
d19cf32f | 1937 | error = copy_from_user(flow_context_ptr->message, (void *) command_args.message_address, command_args.message_size_in_bytes); |
f93e4bf9 | 1938 | end_function: |
d19cf32f | 1939 | dbg("SEP Driver:<-------- sep_add_flow_tables_message_handler end\n"); |
d19cf32f | 1940 | return error; |
cd1bb431 MA |
1941 | } |
1942 | ||
1943 | ||
1944 | /* | |
51faa9d2 | 1945 | this function returns the bus and virtual addresses of the static pool |
cd1bb431 | 1946 | */ |
ca605bb6 | 1947 | static int sep_get_static_pool_addr_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1948 | { |
d19cf32f | 1949 | int error; |
d19cf32f | 1950 | struct sep_driver_static_pool_addr_t command_args; |
cd1bb431 | 1951 | |
d19cf32f | 1952 | dbg("SEP Driver:--------> sep_get_static_pool_addr_handler start\n"); |
cd1bb431 | 1953 | |
d19cf32f | 1954 | /*prepare the output parameters in the struct */ |
70ae04e6 AC |
1955 | command_args.physical_static_address = sep->shared_bus + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; |
1956 | command_args.virtual_static_address = (unsigned long)sep->shared_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 1957 | |
51faa9d2 | 1958 | edbg("SEP Driver:bus_static_address is %08lx, virtual_static_address %08lx\n", command_args.physical_static_address, command_args.virtual_static_address); |
cd1bb431 | 1959 | |
d19cf32f AC |
1960 | /* send the parameters to user application */ |
1961 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_static_pool_addr_t)); | |
d19cf32f | 1962 | dbg("SEP Driver:<-------- sep_get_static_pool_addr_handler end\n"); |
d19cf32f | 1963 | return error; |
cd1bb431 MA |
1964 | } |
1965 | ||
1966 | /* | |
1967 | this address gets the offset of the physical address from the start | |
1968 | of the mapped area | |
1969 | */ | |
ca605bb6 | 1970 | static int sep_get_physical_mapped_offset_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1971 | { |
d19cf32f | 1972 | int error; |
d19cf32f | 1973 | struct sep_driver_get_mapped_offset_t command_args; |
cd1bb431 | 1974 | |
d19cf32f | 1975 | dbg("SEP Driver:--------> sep_get_physical_mapped_offset_handler start\n"); |
cd1bb431 | 1976 | |
d19cf32f AC |
1977 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_get_mapped_offset_t)); |
1978 | if (error) | |
1979 | goto end_function; | |
cd1bb431 | 1980 | |
70ae04e6 | 1981 | if (command_args.physical_address < sep->shared_bus) { |
51faa9d2 | 1982 | error = -EINVAL; |
d19cf32f AC |
1983 | goto end_function; |
1984 | } | |
cd1bb431 | 1985 | |
d19cf32f | 1986 | /*prepare the output parameters in the struct */ |
70ae04e6 | 1987 | command_args.offset = command_args.physical_address - sep->shared_bus; |
cd1bb431 | 1988 | |
51faa9d2 | 1989 | edbg("SEP Driver:bus_address is %08lx, offset is %lu\n", command_args.physical_address, command_args.offset); |
cd1bb431 | 1990 | |
d19cf32f AC |
1991 | /* send the parameters to user application */ |
1992 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_get_mapped_offset_t)); | |
f93e4bf9 | 1993 | end_function: |
d19cf32f | 1994 | dbg("SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n"); |
d19cf32f | 1995 | return error; |
cd1bb431 MA |
1996 | } |
1997 | ||
1998 | ||
1999 | /* | |
2000 | ? | |
2001 | */ | |
ca605bb6 | 2002 | static int sep_start_handler(struct sep_device *sep) |
cd1bb431 | 2003 | { |
d19cf32f | 2004 | unsigned long reg_val; |
f93e4bf9 | 2005 | unsigned long error = 0; |
cd1bb431 | 2006 | |
d19cf32f | 2007 | dbg("SEP Driver:--------> sep_start_handler start\n"); |
cd1bb431 | 2008 | |
d19cf32f | 2009 | /* wait in polling for message from SEP */ |
f93e4bf9 | 2010 | do |
ca605bb6 | 2011 | reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2012 | while (!reg_val); |
cd1bb431 | 2013 | |
d19cf32f | 2014 | /* check the value */ |
43e8c4a3 | 2015 | if (reg_val == 0x1) |
ca605bb6 AC |
2016 | /* fatal error - read error status from GPRO */ |
2017 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
d19cf32f | 2018 | dbg("SEP Driver:<-------- sep_start_handler end\n"); |
d19cf32f | 2019 | return error; |
cd1bb431 MA |
2020 | } |
2021 | ||
2022 | /* | |
2023 | this function handles the request for SEP initialization | |
2024 | */ | |
ca605bb6 | 2025 | static int sep_init_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2026 | { |
d19cf32f | 2027 | unsigned long message_word; |
d19cf32f | 2028 | unsigned long *message_ptr; |
d19cf32f | 2029 | struct sep_driver_init_t command_args; |
d19cf32f | 2030 | unsigned long counter; |
d19cf32f | 2031 | unsigned long error; |
d19cf32f | 2032 | unsigned long reg_val; |
cd1bb431 | 2033 | |
d19cf32f | 2034 | dbg("SEP Driver:--------> sep_init_handler start\n"); |
d19cf32f | 2035 | error = 0; |
cd1bb431 | 2036 | |
d19cf32f | 2037 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_init_t)); |
cd1bb431 | 2038 | |
d19cf32f | 2039 | dbg("SEP Driver:--------> sep_init_handler - finished copy_from_user \n"); |
cd1bb431 | 2040 | |
d19cf32f AC |
2041 | if (error) |
2042 | goto end_function; | |
cd1bb431 | 2043 | |
d19cf32f AC |
2044 | /* PATCH - configure the DMA to single -burst instead of multi-burst */ |
2045 | /*sep_configure_dma_burst(); */ | |
cd1bb431 | 2046 | |
d19cf32f | 2047 | dbg("SEP Driver:--------> sep_init_handler - finished sep_configure_dma_burst \n"); |
cd1bb431 | 2048 | |
d19cf32f | 2049 | message_ptr = (unsigned long *) command_args.message_addr; |
cd1bb431 | 2050 | |
d19cf32f | 2051 | /* set the base address of the SRAM */ |
ca605bb6 | 2052 | sep_write_reg(sep, HW_SRAM_ADDR_REG_ADDR, HW_CC_SRAM_BASE_ADDRESS); |
cd1bb431 | 2053 | |
d19cf32f AC |
2054 | for (counter = 0; counter < command_args.message_size_in_words; counter++, message_ptr++) { |
2055 | get_user(message_word, message_ptr); | |
d19cf32f | 2056 | /* write data to SRAM */ |
ca605bb6 | 2057 | sep_write_reg(sep, HW_SRAM_DATA_REG_ADDR, message_word); |
d19cf32f | 2058 | edbg("SEP Driver:message_word is %lu\n", message_word); |
cd1bb431 | 2059 | /* wait for write complete */ |
ca605bb6 | 2060 | sep_wait_sram_write(sep); |
d19cf32f | 2061 | } |
d19cf32f | 2062 | dbg("SEP Driver:--------> sep_init_handler - finished getting messages from user space\n"); |
d19cf32f | 2063 | /* signal SEP */ |
ca605bb6 | 2064 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1); |
cd1bb431 | 2065 | |
f93e4bf9 | 2066 | do |
ca605bb6 | 2067 | reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2068 | while (!(reg_val & 0xFFFFFFFD)); |
cd1bb431 | 2069 | |
d19cf32f | 2070 | dbg("SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n"); |
cd1bb431 | 2071 | |
d19cf32f AC |
2072 | /* check the value */ |
2073 | if (reg_val == 0x1) { | |
2074 | edbg("SEP Driver:init failed\n"); | |
cd1bb431 | 2075 | |
ca605bb6 | 2076 | error = sep_read_reg(sep, 0x8060); |
d19cf32f | 2077 | edbg("SEP Driver:sw monitor is %lu\n", error); |
cd1bb431 | 2078 | |
d19cf32f | 2079 | /* fatal error - read erro status from GPRO */ |
ca605bb6 | 2080 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); |
d19cf32f | 2081 | edbg("SEP Driver:error is %lu\n", error); |
d19cf32f | 2082 | } |
f93e4bf9 | 2083 | end_function: |
d19cf32f | 2084 | dbg("SEP Driver:<-------- sep_init_handler end\n"); |
d19cf32f | 2085 | return error; |
cd1bb431 MA |
2086 | |
2087 | } | |
2088 | ||
2089 | /* | |
2090 | this function handles the request cache and resident reallocation | |
2091 | */ | |
ca605bb6 AC |
2092 | static int sep_realloc_cache_resident_handler(struct sep_device *sep, |
2093 | unsigned long arg) | |
cd1bb431 | 2094 | { |
d19cf32f | 2095 | struct sep_driver_realloc_cache_resident_t command_args; |
6f13ea3d | 2096 | int error; |
cd1bb431 | 2097 | |
d19cf32f | 2098 | /* copy cache and resident to the their intended locations */ |
6f13ea3d | 2099 | error = sep_load_firmware(sep); |
d19cf32f | 2100 | if (error) |
6f13ea3d | 2101 | return error; |
cd1bb431 | 2102 | |
70ae04e6 | 2103 | command_args.new_base_addr = sep->shared_bus; |
cd1bb431 | 2104 | |
d19cf32f AC |
2105 | /* find the new base address according to the lowest address between |
2106 | cache, resident and shared area */ | |
6f13ea3d AC |
2107 | if (sep->resident_bus < command_args.new_base_addr) |
2108 | command_args.new_base_addr = sep->resident_bus; | |
70ae04e6 AC |
2109 | if (sep->rar_bus < command_args.new_base_addr) |
2110 | command_args.new_base_addr = sep->rar_bus; | |
cd1bb431 | 2111 | |
d19cf32f | 2112 | /* set the return parameters */ |
70ae04e6 | 2113 | command_args.new_cache_addr = sep->rar_bus; |
6f13ea3d | 2114 | command_args.new_resident_addr = sep->resident_bus; |
cd1bb431 | 2115 | |
d19cf32f | 2116 | /* set the new shared area */ |
70ae04e6 | 2117 | command_args.new_shared_area_addr = sep->shared_bus; |
cd1bb431 | 2118 | |
70ae04e6 | 2119 | edbg("SEP Driver:command_args.new_shared_addr is %08llx\n", command_args.new_shared_area_addr); |
6f13ea3d AC |
2120 | edbg("SEP Driver:command_args.new_base_addr is %08llx\n", command_args.new_base_addr); |
2121 | edbg("SEP Driver:command_args.new_resident_addr is %08llx\n", command_args.new_resident_addr); | |
70ae04e6 | 2122 | edbg("SEP Driver:command_args.new_rar_addr is %08llx\n", command_args.new_cache_addr); |
cd1bb431 | 2123 | |
d19cf32f | 2124 | /* return to user */ |
6f13ea3d AC |
2125 | if (copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_realloc_cache_resident_t))) |
2126 | return -EFAULT; | |
2127 | return 0; | |
cd1bb431 MA |
2128 | } |
2129 | ||
2130 | /* | |
2131 | this function handles the request for get time | |
2132 | */ | |
ca605bb6 | 2133 | static int sep_get_time_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2134 | { |
d19cf32f | 2135 | int error; |
d19cf32f | 2136 | struct sep_driver_get_time_t command_args; |
cd1bb431 | 2137 | |
ca605bb6 | 2138 | error = sep_set_time(sep, &command_args.time_physical_address, &command_args.time_value); |
7913c21a AC |
2139 | if (error == 0) |
2140 | error = copy_to_user((void __user *)arg, | |
2141 | &command_args, sizeof(struct sep_driver_get_time_t)); | |
d19cf32f | 2142 | return error; |
cd1bb431 MA |
2143 | |
2144 | } | |
2145 | ||
cd1bb431 | 2146 | /* |
0a18d7b5 | 2147 | This API handles the end transaction request |
cd1bb431 | 2148 | */ |
ca605bb6 | 2149 | static int sep_end_transaction_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2150 | { |
0a18d7b5 | 2151 | dbg("SEP Driver:--------> sep_end_transaction_handler start\n"); |
cd1bb431 | 2152 | |
0a18d7b5 AC |
2153 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
2154 | /* close IMR */ | |
ca605bb6 | 2155 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, 0x7FFF); |
cd1bb431 | 2156 | |
0a18d7b5 | 2157 | /* release IRQ line */ |
ca605bb6 | 2158 | free_irq(SEP_DIRVER_IRQ_NUM, sep); |
cd1bb431 | 2159 | |
0a18d7b5 AC |
2160 | /* lock the sep mutex */ |
2161 | mutex_unlock(&sep_mutex); | |
2162 | #endif | |
cd1bb431 | 2163 | |
0a18d7b5 | 2164 | dbg("SEP Driver:<-------- sep_end_transaction_handler end\n"); |
cd1bb431 | 2165 | |
0a18d7b5 | 2166 | return 0; |
cd1bb431 MA |
2167 | } |
2168 | ||
0a18d7b5 | 2169 | |
cd1bb431 MA |
2170 | /* |
2171 | This function handler the set flow id command | |
2172 | */ | |
ca605bb6 | 2173 | static int sep_set_flow_id_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2174 | { |
d19cf32f | 2175 | int error; |
d19cf32f | 2176 | unsigned long flow_id; |
d19cf32f | 2177 | struct sep_flow_context_t *flow_data_ptr; |
cd1bb431 | 2178 | |
d19cf32f | 2179 | dbg("------------>SEP Driver: sep_set_flow_id_handler start\n"); |
cd1bb431 | 2180 | |
d19cf32f AC |
2181 | error = get_user(flow_id, &(((struct sep_driver_set_flow_id_t *) arg)->flow_id)); |
2182 | if (error) | |
2183 | goto end_function; | |
cd1bb431 | 2184 | |
d19cf32f AC |
2185 | /* find the flow data structure that was just used for creating new flow |
2186 | - its id should be default */ | |
3cacf729 AC |
2187 | flow_data_ptr = sep_find_flow_context(sep, SEP_TEMP_FLOW_ID); |
2188 | if (flow_data_ptr == NULL) | |
d19cf32f | 2189 | goto end_function; |
cd1bb431 | 2190 | |
d19cf32f AC |
2191 | /* set flow id */ |
2192 | flow_data_ptr->flow_id = flow_id; | |
cd1bb431 | 2193 | |
f93e4bf9 | 2194 | end_function: |
d19cf32f | 2195 | dbg("SEP Driver:<-------- sep_set_flow_id_handler end\n"); |
d19cf32f | 2196 | return error; |
cd1bb431 MA |
2197 | } |
2198 | ||
2199 | ||
0a18d7b5 AC |
2200 | |
2201 | ||
2202 | ||
2203 | static int sep_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) | |
2204 | { | |
2205 | int error = 0; | |
ca605bb6 | 2206 | struct sep_device *sep = filp->private_data; |
0a18d7b5 AC |
2207 | |
2208 | dbg("------------>SEP Driver: ioctl start\n"); | |
2209 | ||
2210 | edbg("SEP Driver: cmd is %x\n", cmd); | |
2211 | ||
0a18d7b5 AC |
2212 | switch (cmd) { |
2213 | case SEP_IOCSENDSEPCOMMAND: | |
2214 | /* send command to SEP */ | |
ca605bb6 | 2215 | sep_send_command_handler(sep); |
0a18d7b5 AC |
2216 | edbg("SEP Driver: after sep_send_command_handler\n"); |
2217 | break; | |
2218 | case SEP_IOCSENDSEPRPLYCOMMAND: | |
2219 | /* send reply command to SEP */ | |
ca605bb6 | 2220 | sep_send_reply_command_handler(sep); |
0a18d7b5 AC |
2221 | break; |
2222 | case SEP_IOCALLOCDATAPOLL: | |
2223 | /* allocate data pool */ | |
ca605bb6 | 2224 | error = sep_allocate_data_pool_memory_handler(sep, arg); |
0a18d7b5 AC |
2225 | break; |
2226 | case SEP_IOCWRITEDATAPOLL: | |
2227 | /* write data into memory pool */ | |
ca605bb6 | 2228 | error = sep_write_into_data_pool_handler(sep, arg); |
0a18d7b5 AC |
2229 | break; |
2230 | case SEP_IOCREADDATAPOLL: | |
2231 | /* read data from data pool into application memory */ | |
ca605bb6 | 2232 | error = sep_read_from_data_pool_handler(sep, arg); |
0a18d7b5 AC |
2233 | break; |
2234 | case SEP_IOCCREATESYMDMATABLE: | |
2235 | /* create dma table for synhronic operation */ | |
ca605bb6 | 2236 | error = sep_create_sync_dma_tables_handler(sep, arg); |
0a18d7b5 AC |
2237 | break; |
2238 | case SEP_IOCCREATEFLOWDMATABLE: | |
2239 | /* create flow dma tables */ | |
ca605bb6 | 2240 | error = sep_create_flow_dma_tables_handler(sep, arg); |
0a18d7b5 AC |
2241 | break; |
2242 | case SEP_IOCFREEDMATABLEDATA: | |
2243 | /* free the pages */ | |
ca605bb6 | 2244 | error = sep_free_dma_table_data_handler(sep); |
0a18d7b5 AC |
2245 | break; |
2246 | case SEP_IOCSETFLOWID: | |
2247 | /* set flow id */ | |
ca605bb6 | 2248 | error = sep_set_flow_id_handler(sep, arg); |
0a18d7b5 AC |
2249 | break; |
2250 | case SEP_IOCADDFLOWTABLE: | |
2251 | /* add tables to the dynamic flow */ | |
ca605bb6 | 2252 | error = sep_add_flow_tables_handler(sep, arg); |
0a18d7b5 AC |
2253 | break; |
2254 | case SEP_IOCADDFLOWMESSAGE: | |
2255 | /* add message of add tables to flow */ | |
ca605bb6 | 2256 | error = sep_add_flow_tables_message_handler(sep, arg); |
0a18d7b5 AC |
2257 | break; |
2258 | case SEP_IOCSEPSTART: | |
2259 | /* start command to sep */ | |
ca605bb6 | 2260 | error = sep_start_handler(sep); |
0a18d7b5 AC |
2261 | break; |
2262 | case SEP_IOCSEPINIT: | |
2263 | /* init command to sep */ | |
ca605bb6 | 2264 | error = sep_init_handler(sep, arg); |
0a18d7b5 | 2265 | break; |
0a18d7b5 AC |
2266 | case SEP_IOCGETSTATICPOOLADDR: |
2267 | /* get the physical and virtual addresses of the static pool */ | |
ca605bb6 | 2268 | error = sep_get_static_pool_addr_handler(sep, arg); |
0a18d7b5 AC |
2269 | break; |
2270 | case SEP_IOCENDTRANSACTION: | |
ca605bb6 | 2271 | error = sep_end_transaction_handler(sep, arg); |
0a18d7b5 AC |
2272 | break; |
2273 | case SEP_IOCREALLOCCACHERES: | |
ca605bb6 | 2274 | error = sep_realloc_cache_resident_handler(sep, arg); |
0a18d7b5 AC |
2275 | break; |
2276 | case SEP_IOCGETMAPPEDADDROFFSET: | |
ca605bb6 | 2277 | error = sep_get_physical_mapped_offset_handler(sep, arg); |
0a18d7b5 AC |
2278 | break; |
2279 | case SEP_IOCGETIME: | |
ca605bb6 | 2280 | error = sep_get_time_handler(sep, arg); |
0a18d7b5 AC |
2281 | break; |
2282 | default: | |
2283 | error = -ENOTTY; | |
2284 | break; | |
2285 | } | |
2286 | dbg("SEP Driver:<-------- ioctl end\n"); | |
2287 | return error; | |
2288 | } | |
2289 | ||
2290 | ||
2291 | ||
2292 | #if !SEP_DRIVER_POLLING_MODE | |
2293 | ||
2294 | /* handler for flow done interrupt */ | |
2295 | ||
2296 | static void sep_flow_done_handler(struct work_struct *work) | |
2297 | { | |
2298 | struct sep_flow_context_t *flow_data_ptr; | |
2299 | ||
2300 | /* obtain the mutex */ | |
2301 | mutex_lock(&sep_mutex); | |
2302 | ||
2303 | /* get the pointer to context */ | |
2304 | flow_data_ptr = (struct sep_flow_context_t *) work; | |
2305 | ||
2306 | /* free all the current input tables in sep */ | |
2307 | sep_deallocated_flow_tables(&flow_data_ptr->input_tables_in_process); | |
2308 | ||
2309 | /* free all the current tables output tables in SEP (if needed) */ | |
2310 | if (flow_data_ptr->output_tables_in_process.physical_address != 0xffffffff) | |
2311 | sep_deallocated_flow_tables(&flow_data_ptr->output_tables_in_process); | |
2312 | ||
2313 | /* check if we have additional tables to be sent to SEP only input | |
2314 | flag may be checked */ | |
2315 | if (flow_data_ptr->input_tables_flag) { | |
2316 | /* copy the message to the shared RAM and signal SEP */ | |
70ae04e6 | 2317 | memcpy((void *) flow_data_ptr->message, (void *) sep->shared_addr, flow_data_ptr->message_size_in_bytes); |
0a18d7b5 | 2318 | |
ca605bb6 | 2319 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR, 0x2); |
0a18d7b5 AC |
2320 | } |
2321 | mutex_unlock(&sep_mutex); | |
2322 | } | |
cd1bb431 | 2323 | /* |
0a18d7b5 | 2324 | interrupt handler function |
cd1bb431 | 2325 | */ |
0a18d7b5 | 2326 | static irqreturn_t sep_inthandler(int irq, void *dev_id) |
cd1bb431 | 2327 | { |
0a18d7b5 | 2328 | irqreturn_t int_error; |
0a18d7b5 AC |
2329 | unsigned long reg_val; |
2330 | unsigned long flow_id; | |
2331 | struct sep_flow_context_t *flow_context_ptr; | |
ca605bb6 | 2332 | struct sep_device *sep = dev_id; |
cd1bb431 | 2333 | |
0a18d7b5 | 2334 | int_error = IRQ_HANDLED; |
cd1bb431 | 2335 | |
0a18d7b5 | 2336 | /* read the IRR register to check if this is SEP interrupt */ |
ca605bb6 | 2337 | reg_val = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR); |
0a18d7b5 | 2338 | edbg("SEP Interrupt - reg is %08lx\n", reg_val); |
cd1bb431 | 2339 | |
0a18d7b5 AC |
2340 | /* check if this is the flow interrupt */ |
2341 | if (0 /*reg_val & (0x1 << 11) */ ) { | |
2342 | /* read GPRO to find out the which flow is done */ | |
ca605bb6 | 2343 | flow_id = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR); |
cd1bb431 | 2344 | |
0a18d7b5 | 2345 | /* find the contex of the flow */ |
3cacf729 AC |
2346 | flow_context_ptr = sep_find_flow_context(sep, flow_id >> 28); |
2347 | if (flow_context_ptr == NULL) | |
0a18d7b5 | 2348 | goto end_function_with_error; |
cd1bb431 | 2349 | |
0a18d7b5 | 2350 | /* queue the work */ |
3cacf729 | 2351 | INIT_WORK(&flow_context_ptr->flow_wq, sep_flow_done_handler); |
ca605bb6 | 2352 | queue_work(sep->flow_wq, &flow_context_ptr->flow_wq); |
0a18d7b5 AC |
2353 | |
2354 | } else { | |
2355 | /* check if this is reply interrupt from SEP */ | |
2356 | if (reg_val & (0x1 << 13)) { | |
2357 | /* update the counter of reply messages */ | |
ca605bb6 | 2358 | sep->reply_ct++; |
0a18d7b5 | 2359 | /* wake up the waiting process */ |
904290c0 | 2360 | wake_up(&sep_event); |
0a18d7b5 AC |
2361 | } else { |
2362 | int_error = IRQ_NONE; | |
2363 | goto end_function; | |
2364 | } | |
2365 | } | |
2366 | end_function_with_error: | |
2367 | /* clear the interrupt */ | |
ca605bb6 | 2368 | sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, reg_val); |
0a18d7b5 AC |
2369 | end_function: |
2370 | return int_error; | |
2371 | } | |
2372 | ||
2373 | #endif | |
cd1bb431 | 2374 | |
cd1bb431 | 2375 | |
cd1bb431 | 2376 | |
8c7ff81a | 2377 | #if 0 |
cd1bb431 | 2378 | |
ca605bb6 | 2379 | static void sep_wait_busy(struct sep_device *sep) |
794f1d78 AC |
2380 | { |
2381 | u32 reg; | |
2382 | ||
2383 | do { | |
ca605bb6 | 2384 | reg = sep_read_reg(sep, HW_HOST_SEP_BUSY_REG_ADDR); |
794f1d78 AC |
2385 | } while (reg); |
2386 | } | |
2387 | ||
cd1bb431 MA |
2388 | /* |
2389 | PATCH for configuring the DMA to single burst instead of multi-burst | |
2390 | */ | |
ca605bb6 | 2391 | static void sep_configure_dma_burst(struct sep_device *sep) |
cd1bb431 | 2392 | { |
cd1bb431 MA |
2393 | #define HW_AHB_RD_WR_BURSTS_REG_ADDR 0x0E10UL |
2394 | ||
d19cf32f | 2395 | dbg("SEP Driver:<-------- sep_configure_dma_burst start \n"); |
cd1bb431 | 2396 | |
d19cf32f | 2397 | /* request access to registers from SEP */ |
ca605bb6 | 2398 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); |
cd1bb431 | 2399 | |
d19cf32f | 2400 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n"); |
cd1bb431 | 2401 | |
ca605bb6 | 2402 | sep_wait_busy(sep); |
cd1bb431 | 2403 | |
d19cf32f | 2404 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (while(revVal) wait loop) \n"); |
cd1bb431 | 2405 | |
d19cf32f | 2406 | /* set the DMA burst register to single burst */ |
ca605bb6 | 2407 | sep_write_reg(sep, HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL); |
cd1bb431 | 2408 | |
d19cf32f | 2409 | /* release the sep busy */ |
ca605bb6 AC |
2410 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL); |
2411 | sep_wait_busy(sep); | |
cd1bb431 | 2412 | |
d19cf32f | 2413 | dbg("SEP Driver:<-------- sep_configure_dma_burst done \n"); |
cd1bb431 MA |
2414 | |
2415 | } | |
2416 | ||
8c7ff81a AC |
2417 | #endif |
2418 | ||
0097a69d | 2419 | /* |
ca605bb6 | 2420 | Function that is activaed on the succesful probe of the SEP device |
0097a69d AC |
2421 | */ |
2422 | static int __devinit sep_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2423 | { | |
2424 | int error = 0; | |
ca605bb6 AC |
2425 | struct sep_device *sep; |
2426 | int counter; | |
2427 | int size; /* size of memory for allocation */ | |
70ae04e6 AC |
2428 | unsigned long iosize; |
2429 | unsigned long bar0, end0; | |
0097a69d AC |
2430 | |
2431 | edbg("Sep pci probe starting\n"); | |
ca605bb6 AC |
2432 | if (sep_dev != NULL) { |
2433 | dev_warn(&pdev->dev, "only one SEP supported.\n"); | |
2434 | return -EBUSY; | |
2435 | } | |
0097a69d AC |
2436 | |
2437 | /* enable the device */ | |
2438 | error = pci_enable_device(pdev); | |
2439 | if (error) { | |
2440 | edbg("error enabling pci device\n"); | |
2441 | goto end_function; | |
2442 | } | |
2443 | ||
2444 | /* set the pci dev pointer */ | |
ca605bb6 AC |
2445 | sep_dev = &sep_instance; |
2446 | sep = &sep_instance; | |
2447 | ||
70ae04e6 | 2448 | edbg("sep->shared_addr = %p\n", sep->shared_addr); |
ca605bb6 AC |
2449 | /* transaction counter that coordinates the transactions between SEP |
2450 | and HOST */ | |
2451 | sep->send_ct = 0; | |
2452 | /* counter for the messages from sep */ | |
2453 | sep->reply_ct = 0; | |
2454 | /* counter for the number of bytes allocated in the pool | |
2455 | for the current transaction */ | |
2456 | sep->data_pool_bytes_allocated = 0; | |
2457 | ||
2458 | /* calculate the total size for allocation */ | |
2459 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2460 | 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; | |
2461 | ||
2462 | /* allocate the shared area */ | |
8c7ff81a | 2463 | if (sep_map_and_alloc_shared_area(sep, size)) { |
ca605bb6 AC |
2464 | error = -ENOMEM; |
2465 | /* allocation failed */ | |
2466 | goto end_function_error; | |
2467 | } | |
2468 | /* now set the memory regions */ | |
ca605bb6 AC |
2469 | #if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1) |
2470 | /* send the new SHARED MESSAGE AREA to the SEP */ | |
70ae04e6 | 2471 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep->shared_bus); |
ca605bb6 AC |
2472 | |
2473 | /* poll for SEP response */ | |
51faa9d2 | 2474 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); |
70ae04e6 | 2475 | while (retval != 0xffffffff && retval != sep->shared_bus) |
51faa9d2 | 2476 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); |
ca605bb6 AC |
2477 | |
2478 | /* check the return value (register) */ | |
70ae04e6 | 2479 | if (retval != sep->shared_bus) { |
ca605bb6 AC |
2480 | error = -ENOMEM; |
2481 | goto end_function_deallocate_sep_shared_area; | |
2482 | } | |
2483 | #endif | |
2484 | /* init the flow contextes */ | |
2485 | for (counter = 0; counter < SEP_DRIVER_NUM_FLOWS; counter++) | |
2486 | sep->flows[counter].flow_id = SEP_FREE_FLOW_ID; | |
2487 | ||
2488 | sep->flow_wq = create_singlethread_workqueue("sepflowwq"); | |
2489 | if (sep->flow_wq == NULL) { | |
2490 | error = -ENOMEM; | |
2491 | edbg("sep_driver:flow queue creation failed\n"); | |
2492 | goto end_function_deallocate_sep_shared_area; | |
2493 | } | |
2494 | edbg("SEP Driver: create flow workqueue \n"); | |
2495 | /* load the rom code */ | |
2496 | sep_load_rom_code(sep); | |
2497 | ||
2498 | sep->pdev = pci_dev_get(pdev); | |
0097a69d AC |
2499 | |
2500 | /* get the io memory start address */ | |
70ae04e6 AC |
2501 | bar0 = pci_resource_start(pdev, 0); |
2502 | if (!bar0) { | |
0097a69d | 2503 | edbg("SEP Driver error pci resource start\n"); |
ca605bb6 | 2504 | goto end_function_deallocate_sep_shared_area; |
0097a69d AC |
2505 | } |
2506 | ||
2507 | /* get the io memory end address */ | |
70ae04e6 AC |
2508 | end0 = pci_resource_end(pdev, 0); |
2509 | if (!end0) { | |
0097a69d | 2510 | edbg("SEP Driver error pci resource end\n"); |
ca605bb6 | 2511 | goto end_function_deallocate_sep_shared_area; |
0097a69d AC |
2512 | } |
2513 | ||
70ae04e6 | 2514 | iosize = end0 - bar0 + 1; |
0097a69d | 2515 | |
70ae04e6 | 2516 | edbg("SEP Driver:io_bus is %08lx\n", bar0); |
0097a69d | 2517 | |
70ae04e6 | 2518 | edbg("SEP Driver:io_memory_end_phyaical_address is %08lx\n", end0); |
0097a69d | 2519 | |
70ae04e6 | 2520 | edbg("SEP Driver:io_memory_size is %08lx\n", iosize); |
0097a69d | 2521 | |
70ae04e6 AC |
2522 | sep->reg_addr = ioremap_nocache(bar0, iosize); |
2523 | if (!sep->reg_addr) { | |
0097a69d | 2524 | edbg("SEP Driver error ioremap of io memory\n"); |
ca605bb6 | 2525 | goto end_function_deallocate_sep_shared_area; |
0097a69d AC |
2526 | } |
2527 | ||
70ae04e6 | 2528 | edbg("SEP Driver:io_addr is %p\n", sep->reg_addr); |
0097a69d AC |
2529 | |
2530 | /* set up system base address and shared memory location */ | |
2531 | ||
6f13ea3d AC |
2532 | sep->rar_addr = dma_alloc_coherent(&sep->pdev->dev, |
2533 | 2 * SEP_RAR_IO_MEM_REGION_SIZE, | |
2534 | &sep->rar_bus, GFP_KERNEL); | |
0097a69d | 2535 | |
ca605bb6 | 2536 | if (!sep->rar_addr) { |
6f13ea3d | 2537 | edbg("SEP Driver:can't allocate rar\n"); |
ca605bb6 | 2538 | goto end_function_uniomap; |
0097a69d | 2539 | } |
0097a69d | 2540 | |
51faa9d2 | 2541 | edbg("SEP Driver:rar_bus is %08llx\n", (unsigned long long)sep->rar_bus); |
ca605bb6 | 2542 | edbg("SEP Driver:rar_virtual is %p\n", sep->rar_addr); |
0097a69d AC |
2543 | |
2544 | #if !SEP_DRIVER_POLLING_MODE | |
2545 | ||
2546 | edbg("SEP Driver: about to write IMR and ICR REG_ADDR\n"); | |
2547 | ||
2548 | /* clear ICR register */ | |
ca605bb6 | 2549 | sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF); |
0097a69d AC |
2550 | |
2551 | /* set the IMR register - open only GPR 2 */ | |
ca605bb6 | 2552 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); |
0097a69d | 2553 | |
0097a69d AC |
2554 | edbg("SEP Driver: about to call request_irq\n"); |
2555 | /* get the interrupt line */ | |
ca605bb6 | 2556 | error = request_irq(pdev->irq, sep_inthandler, IRQF_SHARED, "sep_driver", sep); |
0097a69d | 2557 | if (error) |
ca605bb6 | 2558 | goto end_function_free_res; |
0097a69d AC |
2559 | |
2560 | goto end_function; | |
2561 | edbg("SEP Driver: about to write IMR REG_ADDR"); | |
2562 | ||
2563 | /* set the IMR register - open only GPR 2 */ | |
ca605bb6 | 2564 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); |
0097a69d | 2565 | |
ca605bb6 | 2566 | end_function_free_res: |
6f13ea3d AC |
2567 | dma_free_coherent(&sep->pdev->dev, 2 * SEP_RAR_IO_MEM_REGION_SIZE, |
2568 | sep->rar_addr, sep->rar_bus); | |
0097a69d | 2569 | #endif /* SEP_DRIVER_POLLING_MODE */ |
ca605bb6 | 2570 | end_function_uniomap: |
70ae04e6 | 2571 | iounmap(sep->reg_addr); |
ca605bb6 AC |
2572 | end_function_deallocate_sep_shared_area: |
2573 | /* de-allocate shared area */ | |
8c7ff81a | 2574 | sep_unmap_and_free_shared_area(sep, size); |
ca605bb6 AC |
2575 | end_function_error: |
2576 | sep_dev = NULL; | |
0097a69d AC |
2577 | end_function: |
2578 | return error; | |
2579 | } | |
2580 | ||
2581 | static struct pci_device_id sep_pci_id_tbl[] = { | |
2582 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080c)}, | |
2583 | {0} | |
2584 | }; | |
2585 | ||
2586 | MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl); | |
2587 | ||
2588 | /* field for registering driver to PCI device */ | |
2589 | static struct pci_driver sep_pci_driver = { | |
2590 | .name = "sep_sec_driver", | |
2591 | .id_table = sep_pci_id_tbl, | |
2592 | .probe = sep_probe | |
ca605bb6 | 2593 | /* FIXME: remove handler */ |
0097a69d AC |
2594 | }; |
2595 | ||
2f82614c AC |
2596 | /* major and minor device numbers */ |
2597 | static dev_t sep_devno; | |
2598 | ||
2599 | /* the files operations structure of the driver */ | |
2600 | static struct file_operations sep_file_operations = { | |
2601 | .owner = THIS_MODULE, | |
2602 | .ioctl = sep_ioctl, | |
2603 | .poll = sep_poll, | |
2604 | .open = sep_open, | |
2605 | .release = sep_release, | |
2606 | .mmap = sep_mmap, | |
2607 | }; | |
2608 | ||
2609 | ||
2610 | /* cdev struct of the driver */ | |
2611 | static struct cdev sep_cdev; | |
2612 | ||
a2171b68 AC |
2613 | /* |
2614 | this function registers the driver to the file system | |
2615 | */ | |
2616 | static int sep_register_driver_to_fs(void) | |
2617 | { | |
2f82614c | 2618 | int ret_val = alloc_chrdev_region(&sep_devno, 0, 1, "sep_sec_driver"); |
a2171b68 AC |
2619 | if (ret_val) { |
2620 | edbg("sep_driver:major number allocation failed, retval is %d\n", ret_val); | |
2621 | goto end_function; | |
2622 | } | |
2623 | ||
a2171b68 | 2624 | /* init cdev */ |
2f82614c AC |
2625 | cdev_init(&sep_cdev, &sep_file_operations); |
2626 | sep_cdev.owner = THIS_MODULE; | |
a2171b68 AC |
2627 | |
2628 | /* register the driver with the kernel */ | |
2f82614c | 2629 | ret_val = cdev_add(&sep_cdev, sep_devno, 1); |
a2171b68 AC |
2630 | |
2631 | if (ret_val) { | |
2632 | edbg("sep_driver:cdev_add failed, retval is %d\n", ret_val); | |
2633 | goto end_function_unregister_devnum; | |
2634 | } | |
2635 | ||
2636 | goto end_function; | |
2637 | ||
2638 | end_function_unregister_devnum: | |
2639 | ||
2640 | /* unregister dev numbers */ | |
2f82614c | 2641 | unregister_chrdev_region(sep_devno, 1); |
a2171b68 AC |
2642 | |
2643 | end_function: | |
2644 | return ret_val; | |
2645 | } | |
2646 | ||
a2171b68 AC |
2647 | |
2648 | /*-------------------------------------------------------------- | |
2649 | init function | |
2650 | ----------------------------------------------------------------*/ | |
2651 | static int __init sep_init(void) | |
2652 | { | |
2653 | int ret_val = 0; | |
a2171b68 | 2654 | dbg("SEP Driver:-------->Init start\n"); |
91410066 AC |
2655 | /* FIXME: Probe can occur before we are ready to survive a probe */ |
2656 | ret_val = pci_register_driver(&sep_pci_driver); | |
a2171b68 AC |
2657 | if (ret_val) { |
2658 | edbg("sep_driver:sep_driver_to_device failed, ret_val is %d\n", ret_val); | |
2659 | goto end_function_unregister_from_fs; | |
2660 | } | |
a2171b68 AC |
2661 | /* register driver to fs */ |
2662 | ret_val = sep_register_driver_to_fs(); | |
2663 | if (ret_val) | |
ca605bb6 | 2664 | goto end_function_unregister_pci; |
a2171b68 | 2665 | goto end_function; |
ca605bb6 AC |
2666 | end_function_unregister_pci: |
2667 | pci_unregister_driver(&sep_pci_driver); | |
a2171b68 AC |
2668 | end_function_unregister_from_fs: |
2669 | /* unregister from fs */ | |
91410066 AC |
2670 | cdev_del(&sep_cdev); |
2671 | /* unregister dev numbers */ | |
2672 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 AC |
2673 | end_function: |
2674 | dbg("SEP Driver:<-------- Init end\n"); | |
2675 | return ret_val; | |
2676 | } | |
2677 | ||
2678 | ||
2679 | /*------------------------------------------------------------- | |
2680 | exit function | |
2681 | --------------------------------------------------------------*/ | |
2682 | static void __exit sep_exit(void) | |
2683 | { | |
2684 | int size; | |
2685 | ||
2686 | dbg("SEP Driver:--------> Exit start\n"); | |
2687 | ||
2688 | /* unregister from fs */ | |
91410066 AC |
2689 | cdev_del(&sep_cdev); |
2690 | /* unregister dev numbers */ | |
2691 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 AC |
2692 | /* calculate the total size for de-allocation */ |
2693 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2694 | 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; | |
ca605bb6 | 2695 | /* FIXME: We need to do this in the unload for the device */ |
a2171b68 | 2696 | /* free shared area */ |
ca605bb6 | 2697 | if (sep_dev) { |
8c7ff81a | 2698 | sep_unmap_and_free_shared_area(sep_dev, size); |
ca605bb6 AC |
2699 | edbg("SEP Driver: free pages SEP SHARED AREA \n"); |
2700 | iounmap((void *) sep_dev->reg_addr); | |
2701 | edbg("SEP Driver: iounmap \n"); | |
2702 | } | |
a2171b68 AC |
2703 | edbg("SEP Driver: release_mem_region \n"); |
2704 | dbg("SEP Driver:<-------- Exit end\n"); | |
2705 | } | |
2706 | ||
2707 | ||
cd1bb431 MA |
2708 | module_init(sep_init); |
2709 | module_exit(sep_exit); | |
2710 | ||
2711 | MODULE_LICENSE("GPL"); |