Commit | Line | Data |
---|---|---|
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> | |
db376005 | 38 | #include <linux/sched.h> |
cd1bb431 MA |
39 | #include <linux/mm.h> |
40 | #include <linux/poll.h> | |
41 | #include <linux/wait.h> | |
0097a69d AC |
42 | #include <linux/pci.h> |
43 | #include <linux/firmware.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
cd1bb431 MA |
45 | #include <asm/ioctl.h> |
46 | #include <linux/ioport.h> | |
47 | #include <asm/io.h> | |
48 | #include <linux/interrupt.h> | |
49 | #include <linux/pagemap.h> | |
50 | #include <asm/cacheflush.h> | |
51 | #include "sep_driver_hw_defs.h" | |
52 | #include "sep_driver_config.h" | |
53 | #include "sep_driver_api.h" | |
f5e3980f | 54 | #include "sep_dev.h" |
cd1bb431 | 55 | |
0097a69d | 56 | #if SEP_DRIVER_ARM_DEBUG_MODE |
cd1bb431 | 57 | |
0097a69d AC |
58 | #define CRYS_SEP_ROM_length 0x4000 |
59 | #define CRYS_SEP_ROM_start_address 0x8000C000UL | |
60 | #define CRYS_SEP_ROM_start_address_offset 0xC000UL | |
61 | #define SEP_ROM_BANK_register 0x80008420UL | |
62 | #define SEP_ROM_BANK_register_offset 0x8420UL | |
63 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0x82000000 | |
cd1bb431 | 64 | |
0097a69d AC |
65 | /* |
66 | * THESE 2 definitions are specific to the board - must be | |
67 | * defined during integration | |
68 | */ | |
69 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0xFF0D0000 | |
70 | ||
71 | /* 2M size */ | |
72 | ||
ca605bb6 | 73 | static void sep_load_rom_code(struct sep_device *sep) |
0097a69d AC |
74 | { |
75 | /* Index variables */ | |
76 | unsigned long i, k, j; | |
904290c0 AC |
77 | u32 reg; |
78 | u32 error; | |
79 | u32 warning; | |
0097a69d AC |
80 | |
81 | /* Loading ROM from SEP_ROM_image.h file */ | |
82 | k = sizeof(CRYS_SEP_ROM); | |
83 | ||
84 | edbg("SEP Driver: DX_CC_TST_SepRomLoader start\n"); | |
85 | ||
86 | edbg("SEP Driver: k is %lu\n", k); | |
ca605bb6 | 87 | edbg("SEP Driver: sep->reg_addr is %p\n", sep->reg_addr); |
0097a69d AC |
88 | edbg("SEP Driver: CRYS_SEP_ROM_start_address_offset is %p\n", CRYS_SEP_ROM_start_address_offset); |
89 | ||
90 | for (i = 0; i < 4; i++) { | |
91 | /* write bank */ | |
ca605bb6 | 92 | sep_write_reg(sep, SEP_ROM_BANK_register_offset, i); |
0097a69d AC |
93 | |
94 | for (j = 0; j < CRYS_SEP_ROM_length / 4; j++) { | |
ca605bb6 | 95 | sep_write_reg(sep, CRYS_SEP_ROM_start_address_offset + 4 * j, CRYS_SEP_ROM[i * 0x1000 + j]); |
0097a69d AC |
96 | |
97 | k = k - 4; | |
98 | ||
99 | if (k == 0) { | |
100 | j = CRYS_SEP_ROM_length; | |
101 | i = 4; | |
102 | } | |
103 | } | |
104 | } | |
105 | ||
106 | /* reset the SEP */ | |
ca605bb6 | 107 | sep_write_reg(sep, HW_HOST_SEP_SW_RST_REG_ADDR, 0x1); |
0097a69d AC |
108 | |
109 | /* poll for SEP ROM boot finish */ | |
dabe6e69 | 110 | do |
ca605bb6 | 111 | reg = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
dabe6e69 | 112 | while (!reg); |
0097a69d AC |
113 | |
114 | edbg("SEP Driver: ROM polling ended\n"); | |
115 | ||
904290c0 | 116 | switch (reg) { |
0097a69d AC |
117 | case 0x1: |
118 | /* fatal error - read erro status from GPRO */ | |
ca605bb6 | 119 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); |
0097a69d AC |
120 | edbg("SEP Driver: ROM polling case 1\n"); |
121 | break; | |
0097a69d AC |
122 | case 0x4: |
123 | /* Cold boot ended successfully */ | |
0097a69d AC |
124 | case 0x8: |
125 | /* Warmboot ended successfully */ | |
0097a69d AC |
126 | case 0x10: |
127 | /* ColdWarm boot ended successfully */ | |
904290c0 | 128 | error = 0; |
dabe6e69 AC |
129 | case 0x2: |
130 | /* Boot First Phase ended */ | |
131 | warning = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
0097a69d | 132 | case 0x20: |
dabe6e69 | 133 | edbg("SEP Driver: ROM polling case %d\n", reg); |
0097a69d AC |
134 | break; |
135 | } | |
136 | ||
137 | } | |
138 | ||
139 | #else | |
ca605bb6 | 140 | static void sep_load_rom_code(struct sep_device *sep) { } |
0097a69d | 141 | #endif /* SEP_DRIVER_ARM_DEBUG_MODE */ |
cd1bb431 | 142 | |
cd1bb431 MA |
143 | |
144 | ||
0097a69d AC |
145 | /*---------------------------------------- |
146 | DEFINES | |
147 | -----------------------------------------*/ | |
148 | ||
0097a69d AC |
149 | #define BASE_ADDRESS_FOR_SYSTEM 0xfffc0000 |
150 | #define SEP_RAR_IO_MEM_REGION_SIZE 0x40000 | |
cd1bb431 MA |
151 | |
152 | /*-------------------------------------------- | |
153 | GLOBAL variables | |
154 | --------------------------------------------*/ | |
155 | ||
156 | /* debug messages level */ | |
51faa9d2 AC |
157 | static int debug; |
158 | module_param(debug, int , 0); | |
159 | MODULE_PARM_DESC(debug, "Flag to enable SEP debug messages"); | |
cd1bb431 | 160 | |
0097a69d AC |
161 | /* Keep this a single static object for now to keep the conversion easy */ |
162 | ||
163 | static struct sep_device sep_instance; | |
b10b483e | 164 | static struct sep_device *sep_dev = &sep_instance; |
0097a69d | 165 | |
cd1bb431 MA |
166 | /* |
167 | mutex for the access to the internals of the sep driver | |
168 | */ | |
169 | static DEFINE_MUTEX(sep_mutex); | |
170 | ||
171 | ||
172 | /* wait queue head (event) of the driver */ | |
904290c0 | 173 | static DECLARE_WAIT_QUEUE_HEAD(sep_event); |
cd1bb431 | 174 | |
6f13ea3d AC |
175 | /** |
176 | * sep_load_firmware - copy firmware cache/resident | |
177 | * @sep: device we are loading | |
178 | * | |
179 | * This functions copies the cache and resident from their source | |
180 | * location into destination shared memory. | |
181 | */ | |
182 | ||
183 | static int sep_load_firmware(struct sep_device *sep) | |
0097a69d | 184 | { |
0097a69d | 185 | const struct firmware *fw; |
4401e824 BH |
186 | char *cache_name = "sep/cache.image.bin"; |
187 | char *res_name = "sep/resident.image.bin"; | |
0097a69d AC |
188 | int error; |
189 | ||
ca605bb6 | 190 | edbg("SEP Driver:rar_virtual is %p\n", sep->rar_addr); |
51faa9d2 | 191 | edbg("SEP Driver:rar_bus is %08llx\n", (unsigned long long)sep->rar_bus); |
0097a69d | 192 | |
0097a69d | 193 | /* load cache */ |
ca605bb6 | 194 | error = request_firmware(&fw, cache_name, &sep->pdev->dev); |
0097a69d AC |
195 | if (error) { |
196 | edbg("SEP Driver:cant request cache fw\n"); | |
6f13ea3d | 197 | return error; |
0097a69d | 198 | } |
6f13ea3d | 199 | edbg("SEP Driver:cache %08Zx@%p\n", fw->size, (void *) fw->data); |
0097a69d | 200 | |
70ae04e6 | 201 | memcpy(sep->rar_addr, (void *)fw->data, fw->size); |
790cf1b9 | 202 | sep->cache_size = fw->size; |
0097a69d AC |
203 | release_firmware(fw); |
204 | ||
70ae04e6 AC |
205 | sep->resident_bus = sep->rar_bus + sep->cache_size; |
206 | sep->resident_addr = sep->rar_addr + sep->cache_size; | |
0097a69d AC |
207 | |
208 | /* load resident */ | |
ca605bb6 | 209 | error = request_firmware(&fw, res_name, &sep->pdev->dev); |
0097a69d AC |
210 | if (error) { |
211 | edbg("SEP Driver:cant request res fw\n"); | |
6f13ea3d | 212 | return error; |
0097a69d | 213 | } |
6f13ea3d | 214 | edbg("sep: res %08Zx@%p\n", fw->size, (void *)fw->data); |
0097a69d | 215 | |
6f13ea3d | 216 | memcpy(sep->resident_addr, (void *) fw->data, fw->size); |
ca605bb6 | 217 | sep->resident_size = fw->size; |
0097a69d AC |
218 | release_firmware(fw); |
219 | ||
6f13ea3d AC |
220 | edbg("sep: resident v %p b %08llx cache v %p b %08llx\n", |
221 | sep->resident_addr, (unsigned long long)sep->resident_bus, | |
70ae04e6 | 222 | sep->rar_addr, (unsigned long long)sep->rar_bus); |
6f13ea3d | 223 | return 0; |
0097a69d AC |
224 | } |
225 | ||
e4c3a24d BH |
226 | MODULE_FIRMWARE("sep/cache.image.bin"); |
227 | MODULE_FIRMWARE("sep/resident.image.bin"); | |
228 | ||
ad6b9ab7 AC |
229 | /** |
230 | * sep_map_and_alloc_shared_area - allocate shared block | |
231 | * @sep: security processor | |
232 | * @size: size of shared area | |
233 | * | |
234 | * Allocate a shared buffer in host memory that can be used by both the | |
235 | * kernel and also the hardware interface via DMA. | |
236 | */ | |
237 | ||
ca605bb6 | 238 | static int sep_map_and_alloc_shared_area(struct sep_device *sep, |
ad6b9ab7 | 239 | unsigned long size) |
0097a69d | 240 | { |
ca605bb6 | 241 | /* shared_addr = ioremap_nocache(0xda00000,shared_area_size); */ |
c7b75562 | 242 | sep->shared_addr = dma_alloc_coherent(&sep->pdev->dev, size, |
ad6b9ab7 AC |
243 | &sep->shared_bus, GFP_KERNEL); |
244 | ||
ca605bb6 | 245 | if (!sep->shared_addr) { |
ad6b9ab7 AC |
246 | edbg("sep_driver :shared memory dma_alloc_coherent failed\n"); |
247 | return -ENOMEM; | |
0097a69d | 248 | } |
51faa9d2 | 249 | /* set the bus address of the shared area */ |
70ae04e6 | 250 | edbg("sep: shared_addr %ld bytes @%p (bus %08llx)\n", |
ad6b9ab7 | 251 | size, sep->shared_addr, (unsigned long long)sep->shared_bus); |
0097a69d AC |
252 | return 0; |
253 | } | |
254 | ||
ad6b9ab7 AC |
255 | /** |
256 | * sep_unmap_and_free_shared_area - free shared block | |
257 | * @sep: security processor | |
258 | * | |
259 | * Free the shared area allocated to the security processor. The | |
260 | * processor must have finished with this and any final posted | |
261 | * writes cleared before we do so. | |
262 | */ | |
8c7ff81a | 263 | static void sep_unmap_and_free_shared_area(struct sep_device *sep, int size) |
0097a69d | 264 | { |
ad6b9ab7 | 265 | dma_free_coherent(&sep->pdev->dev, size, |
70ae04e6 | 266 | sep->shared_addr, sep->shared_bus); |
0097a69d AC |
267 | } |
268 | ||
ad6b9ab7 | 269 | /** |
70ae04e6 | 270 | * sep_shared_virt_to_bus - convert bus/virt addresses |
ad6b9ab7 | 271 | * |
51faa9d2 | 272 | * Returns the bus address inside the shared area according |
ad6b9ab7 AC |
273 | * to the virtual address. |
274 | */ | |
275 | ||
70ae04e6 | 276 | static dma_addr_t sep_shared_virt_to_bus(struct sep_device *sep, |
790cf1b9 | 277 | void *virt_address) |
0097a69d | 278 | { |
ad6b9ab7 | 279 | dma_addr_t pa = sep->shared_bus + (virt_address - sep->shared_addr); |
db376005 AC |
280 | edbg("sep: virt to bus b %08llx v %p\n", (unsigned long long) pa, |
281 | virt_address); | |
ad6b9ab7 | 282 | return pa; |
0097a69d AC |
283 | } |
284 | ||
ad6b9ab7 | 285 | /** |
70ae04e6 | 286 | * sep_shared_bus_to_virt - convert bus/virt addresses |
ad6b9ab7 AC |
287 | * |
288 | * Returns virtual address inside the shared area according | |
289 | * to the bus address. | |
290 | */ | |
291 | ||
70ae04e6 | 292 | static void *sep_shared_bus_to_virt(struct sep_device *sep, |
ad6b9ab7 | 293 | dma_addr_t bus_address) |
0097a69d | 294 | { |
ad6b9ab7 | 295 | return sep->shared_addr + (bus_address - sep->shared_bus); |
0097a69d AC |
296 | } |
297 | ||
298 | ||
4c29e979 AC |
299 | /** |
300 | * sep_try_open - attempt to open a SEP device | |
301 | * @sep: device to attempt to open | |
302 | * | |
303 | * Atomically attempt to get ownership of a SEP device. | |
304 | * Returns 1 if the device was opened, 0 on failure. | |
305 | */ | |
306 | ||
307 | static int sep_try_open(struct sep_device *sep) | |
cd1bb431 | 308 | { |
4c29e979 AC |
309 | if (!test_and_set_bit(0, &sep->in_use)) |
310 | return 1; | |
311 | return 0; | |
312 | } | |
313 | ||
314 | /** | |
315 | * sep_open - device open method | |
316 | * @inode: inode of sep device | |
317 | * @filp: file handle to sep device | |
318 | * | |
319 | * Open method for the SEP device. Called when userspace opens | |
320 | * the SEP device node. Must also release the memory data pool | |
321 | * allocations. | |
322 | * | |
323 | * Returns zero on success otherwise an error code. | |
324 | */ | |
cd1bb431 | 325 | |
4c29e979 AC |
326 | static int sep_open(struct inode *inode, struct file *filp) |
327 | { | |
328 | if (sep_dev == NULL) | |
329 | return -ENODEV; | |
cd1bb431 | 330 | |
d19cf32f | 331 | /* check the blocking mode */ |
4c29e979 AC |
332 | if (filp->f_flags & O_NDELAY) { |
333 | if (sep_try_open(sep_dev) == 0) | |
334 | return -EAGAIN; | |
335 | } else | |
336 | if (wait_event_interruptible(sep_event, sep_try_open(sep_dev)) < 0) | |
337 | return -EINTR; | |
cd1bb431 | 338 | |
ca605bb6 AC |
339 | /* Bind to the device, we only have one which makes it easy */ |
340 | filp->private_data = sep_dev; | |
d19cf32f AC |
341 | /* release data pool allocations */ |
342 | sep_dev->data_pool_bytes_allocated = 0; | |
4c29e979 | 343 | return 0; |
cd1bb431 MA |
344 | } |
345 | ||
346 | ||
4c29e979 AC |
347 | /** |
348 | * sep_release - close a SEP device | |
349 | * @inode: inode of SEP device | |
350 | * @filp: file handle being closed | |
351 | * | |
352 | * Called on the final close of a SEP device. As the open protects against | |
353 | * multiple simultaenous opens that means this method is called when the | |
354 | * final reference to the open handle is dropped. | |
355 | */ | |
cd1bb431 | 356 | |
4c29e979 | 357 | static int sep_release(struct inode *inode, struct file *filp) |
cd1bb431 | 358 | { |
4c29e979 | 359 | struct sep_device *sep = filp->private_data; |
d19cf32f AC |
360 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
361 | /* close IMR */ | |
ca605bb6 | 362 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, 0x7FFF); |
d19cf32f | 363 | /* release IRQ line */ |
ca605bb6 | 364 | free_irq(SEP_DIRVER_IRQ_NUM, sep); |
cd1bb431 MA |
365 | |
366 | #endif | |
4c29e979 AC |
367 | /* Ensure any blocked open progresses */ |
368 | clear_bit(0, &sep->in_use); | |
369 | wake_up(&sep_event); | |
d19cf32f | 370 | return 0; |
cd1bb431 MA |
371 | } |
372 | ||
cd1bb431 MA |
373 | /*--------------------------------------------------------------- |
374 | map function - this functions maps the message shared area | |
375 | -----------------------------------------------------------------*/ | |
d19cf32f | 376 | static int sep_mmap(struct file *filp, struct vm_area_struct *vma) |
cd1bb431 | 377 | { |
51faa9d2 | 378 | dma_addr_t bus_addr; |
ca605bb6 | 379 | struct sep_device *sep = filp->private_data; |
cd1bb431 | 380 | |
d19cf32f | 381 | dbg("-------->SEP Driver: mmap start\n"); |
cd1bb431 | 382 | |
d19cf32f AC |
383 | /* check that the size of the mapped range is as the size of the message |
384 | shared area */ | |
385 | if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) { | |
386 | edbg("SEP Driver mmap requested size is more than allowed\n"); | |
bc568942 | 387 | printk(KERN_WARNING "SEP Driver mmap requested size is more than allowed\n"); |
d19cf32f AC |
388 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_end); |
389 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_start); | |
390 | return -EAGAIN; | |
391 | } | |
392 | ||
70ae04e6 | 393 | edbg("SEP Driver:sep->shared_addr is %p\n", sep->shared_addr); |
d19cf32f | 394 | |
51faa9d2 | 395 | /* get bus address */ |
70ae04e6 | 396 | bus_addr = sep->shared_bus; |
d19cf32f | 397 | |
51faa9d2 | 398 | edbg("SEP Driver: phys_addr is %08llx\n", (unsigned long long)bus_addr); |
d19cf32f | 399 | |
51faa9d2 | 400 | if (remap_pfn_range(vma, vma->vm_start, bus_addr >> PAGE_SHIFT, vma->vm_end - vma->vm_start, vma->vm_page_prot)) { |
d19cf32f AC |
401 | edbg("SEP Driver remap_page_range failed\n"); |
402 | printk(KERN_WARNING "SEP Driver remap_page_range failed\n"); | |
403 | return -EAGAIN; | |
404 | } | |
405 | ||
406 | dbg("SEP Driver:<-------- mmap end\n"); | |
407 | ||
408 | return 0; | |
cd1bb431 MA |
409 | } |
410 | ||
411 | ||
412 | /*----------------------------------------------- | |
413 | poll function | |
414 | *----------------------------------------------*/ | |
d19cf32f | 415 | static unsigned int sep_poll(struct file *filp, poll_table * wait) |
cd1bb431 | 416 | { |
d19cf32f | 417 | unsigned long count; |
d19cf32f | 418 | unsigned int mask = 0; |
51faa9d2 | 419 | unsigned long retval = 0; /* flow id */ |
ca605bb6 | 420 | struct sep_device *sep = filp->private_data; |
cd1bb431 | 421 | |
d19cf32f | 422 | dbg("---------->SEP Driver poll: start\n"); |
cd1bb431 MA |
423 | |
424 | ||
425 | #if SEP_DRIVER_POLLING_MODE | |
426 | ||
51faa9d2 AC |
427 | while (sep->send_ct != (retval & 0x7FFFFFFF)) { |
428 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
cd1bb431 | 429 | |
d19cf32f | 430 | for (count = 0; count < 10 * 4; count += 4) |
70ae04e6 | 431 | 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 | 432 | } |
cd1bb431 | 433 | |
ca605bb6 | 434 | sep->reply_ct++; |
cd1bb431 | 435 | #else |
d19cf32f | 436 | /* add the event to the polling wait table */ |
904290c0 | 437 | poll_wait(filp, &sep_event, wait); |
cd1bb431 MA |
438 | |
439 | #endif | |
440 | ||
ca605bb6 AC |
441 | edbg("sep->send_ct is %lu\n", sep->send_ct); |
442 | edbg("sep->reply_ct is %lu\n", sep->reply_ct); | |
d19cf32f AC |
443 | |
444 | /* check if the data is ready */ | |
ca605bb6 | 445 | if (sep->send_ct == sep->reply_ct) { |
d19cf32f | 446 | for (count = 0; count < 12 * 4; count += 4) |
70ae04e6 | 447 | edbg("Sep Mesg Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + count))); |
d19cf32f AC |
448 | |
449 | for (count = 0; count < 10 * 4; count += 4) | |
70ae04e6 | 450 | edbg("Debug Data Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + 0x1800 + count))); |
d19cf32f | 451 | |
51faa9d2 AC |
452 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR); |
453 | edbg("retval is %lu\n", retval); | |
d19cf32f | 454 | /* check if the this is sep reply or request */ |
51faa9d2 | 455 | if (retval >> 31) { |
d19cf32f AC |
456 | edbg("SEP Driver: sep request in\n"); |
457 | /* request */ | |
458 | mask |= POLLOUT | POLLWRNORM; | |
459 | } else { | |
460 | edbg("SEP Driver: sep reply in\n"); | |
461 | mask |= POLLIN | POLLRDNORM; | |
462 | } | |
cd1bb431 | 463 | } |
d19cf32f AC |
464 | dbg("SEP Driver:<-------- poll exit\n"); |
465 | return mask; | |
cd1bb431 MA |
466 | } |
467 | ||
cfd498be AC |
468 | /** |
469 | * sep_time_address - address in SEP memory of time | |
470 | * @sep: SEP device we want the address from | |
471 | * | |
472 | * Return the address of the two dwords in memory used for time | |
473 | * setting. | |
474 | */ | |
475 | ||
476 | static u32 *sep_time_address(struct sep_device *sep) | |
477 | { | |
478 | return sep->shared_addr + SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES; | |
479 | } | |
480 | ||
481 | /** | |
482 | * sep_set_time - set the SEP time | |
483 | * @sep: the SEP we are setting the time for | |
484 | * | |
485 | * Calculates time and sets it at the predefined address. | |
486 | * Called with the sep mutex held. | |
487 | */ | |
488 | static unsigned long sep_set_time(struct sep_device *sep) | |
cd1bb431 | 489 | { |
0a18d7b5 | 490 | struct timeval time; |
cfd498be | 491 | u32 *time_addr; /* address of time as seen by the kernel */ |
cd1bb431 | 492 | |
cd1bb431 | 493 | |
cfd498be | 494 | dbg("sep:sep_set_time start\n"); |
cd1bb431 | 495 | |
0a18d7b5 | 496 | do_gettimeofday(&time); |
cd1bb431 | 497 | |
0a18d7b5 | 498 | /* set value in the SYSTEM MEMORY offset */ |
cfd498be | 499 | time_addr = sep_time_address(sep); |
cd1bb431 | 500 | |
790cf1b9 AC |
501 | time_addr[0] = SEP_TIME_VAL_TOKEN; |
502 | time_addr[1] = time.tv_sec; | |
cd1bb431 | 503 | |
0a18d7b5 | 504 | edbg("SEP Driver:time.tv_sec is %lu\n", time.tv_sec); |
790cf1b9 | 505 | edbg("SEP Driver:time_addr is %p\n", time_addr); |
70ae04e6 | 506 | edbg("SEP Driver:sep->shared_addr is %p\n", sep->shared_addr); |
b6368033 | 507 | |
cfd498be | 508 | return time.tv_sec; |
0a18d7b5 | 509 | } |
b6368033 | 510 | |
2e7dcc3b AC |
511 | /** |
512 | * sep_dump_message - dump the message that is pending | |
513 | * @sep: sep device | |
514 | * | |
515 | * Dump out the message pending in the shared message area | |
516 | */ | |
517 | ||
518 | static void sep_dump_message(struct sep_device *sep) | |
519 | { | |
520 | int count; | |
521 | for (count = 0; count < 12 * 4; count += 4) | |
522 | edbg("Word %d of the message is %u\n", count, *((u32 *) (sep->shared_addr + count))); | |
523 | } | |
524 | ||
525 | /** | |
526 | * sep_send_command_handler - kick off a command | |
527 | * @sep: sep being signalled | |
528 | * | |
529 | * This function raises interrupt to SEP that signals that is has a new | |
530 | * command from the host | |
531 | */ | |
532 | ||
ca605bb6 | 533 | static void sep_send_command_handler(struct sep_device *sep) |
0a18d7b5 | 534 | { |
2e7dcc3b | 535 | dbg("sep:sep_send_command_handler start\n"); |
b6368033 | 536 | |
2e7dcc3b | 537 | mutex_lock(&sep_mutex); |
cfd498be | 538 | sep_set_time(sep); |
b6368033 | 539 | |
2e7dcc3b | 540 | /* FIXME: flush cache */ |
0a18d7b5 | 541 | flush_cache_all(); |
b6368033 | 542 | |
2e7dcc3b | 543 | sep_dump_message(sep); |
0a18d7b5 | 544 | /* update counter */ |
ca605bb6 | 545 | sep->send_ct++; |
0a18d7b5 | 546 | /* send interrupt to SEP */ |
ca605bb6 | 547 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); |
0a18d7b5 | 548 | dbg("SEP Driver:<-------- sep_send_command_handler end\n"); |
2e7dcc3b | 549 | mutex_unlock(&sep_mutex); |
0a18d7b5 | 550 | return; |
b6368033 | 551 | } |
0a18d7b5 | 552 | |
2e7dcc3b AC |
553 | /** |
554 | * sep_send_reply_command_handler - kick off a command reply | |
555 | * @sep: sep being signalled | |
556 | * | |
557 | * This function raises interrupt to SEP that signals that is has a new | |
558 | * command from the host | |
559 | */ | |
560 | ||
ca605bb6 | 561 | static void sep_send_reply_command_handler(struct sep_device *sep) |
cd1bb431 | 562 | { |
2e7dcc3b | 563 | dbg("sep:sep_send_reply_command_handler start\n"); |
cd1bb431 | 564 | |
0a18d7b5 AC |
565 | /* flash cache */ |
566 | flush_cache_all(); | |
2e7dcc3b AC |
567 | |
568 | sep_dump_message(sep); | |
569 | ||
570 | mutex_lock(&sep_mutex); | |
571 | sep->send_ct++; /* update counter */ | |
0a18d7b5 | 572 | /* send the interrupt to SEP */ |
ca605bb6 | 573 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep->send_ct); |
0a18d7b5 | 574 | /* update both counters */ |
ca605bb6 AC |
575 | sep->send_ct++; |
576 | sep->reply_ct++; | |
2e7dcc3b AC |
577 | mutex_unlock(&sep_mutex); |
578 | dbg("sep: sep_send_reply_command_handler end\n"); | |
0a18d7b5 | 579 | } |
cd1bb431 | 580 | |
0a18d7b5 AC |
581 | /* |
582 | This function handles the allocate data pool memory request | |
51faa9d2 | 583 | This function returns calculates the bus address of the |
0a18d7b5 AC |
584 | allocated memory, and the offset of this area from the mapped address. |
585 | Therefore, the FVOs in user space can calculate the exact virtual | |
586 | address of this allocated memory | |
587 | */ | |
ca605bb6 AC |
588 | static int sep_allocate_data_pool_memory_handler(struct sep_device *sep, |
589 | unsigned long arg) | |
0a18d7b5 AC |
590 | { |
591 | int error; | |
592 | struct sep_driver_alloc_t command_args; | |
cd1bb431 | 593 | |
0a18d7b5 | 594 | dbg("SEP Driver:--------> sep_allocate_data_pool_memory_handler start\n"); |
cd1bb431 | 595 | |
0a18d7b5 AC |
596 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_alloc_t)); |
597 | if (error) | |
598 | goto end_function; | |
cd1bb431 | 599 | |
0a18d7b5 | 600 | /* allocate memory */ |
ca605bb6 | 601 | if ((sep->data_pool_bytes_allocated + command_args.num_bytes) > SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { |
51faa9d2 | 602 | error = -ENOMEM; |
0a18d7b5 AC |
603 | goto end_function; |
604 | } | |
cd1bb431 | 605 | |
51faa9d2 | 606 | /* set the virtual and bus address */ |
ca605bb6 | 607 | command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep->data_pool_bytes_allocated; |
70ae04e6 | 608 | command_args.phys_address = sep->shared_bus + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep->data_pool_bytes_allocated; |
0a18d7b5 AC |
609 | |
610 | /* write the memory back to the user space */ | |
611 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_alloc_t)); | |
612 | if (error) | |
613 | goto end_function; | |
614 | ||
615 | /* set the allocation */ | |
ca605bb6 | 616 | sep->data_pool_bytes_allocated += command_args.num_bytes; |
d19cf32f | 617 | |
f93e4bf9 | 618 | end_function: |
0a18d7b5 AC |
619 | dbg("SEP Driver:<-------- sep_allocate_data_pool_memory_handler end\n"); |
620 | return error; | |
cd1bb431 MA |
621 | } |
622 | ||
cd1bb431 | 623 | /* |
0a18d7b5 | 624 | This function handles write into allocated data pool command |
cd1bb431 | 625 | */ |
ca605bb6 | 626 | static int sep_write_into_data_pool_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 627 | { |
0a18d7b5 | 628 | int error; |
790cf1b9 AC |
629 | void *virt_address; |
630 | unsigned long va; | |
0a18d7b5 AC |
631 | unsigned long app_in_address; |
632 | unsigned long num_bytes; | |
790cf1b9 | 633 | void *data_pool_area_addr; |
cd1bb431 | 634 | |
0a18d7b5 | 635 | dbg("SEP Driver:--------> sep_write_into_data_pool_handler start\n"); |
cd1bb431 | 636 | |
0a18d7b5 AC |
637 | /* get the application address */ |
638 | error = get_user(app_in_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
639 | if (error) | |
640 | goto end_function; | |
cd1bb431 | 641 | |
0a18d7b5 | 642 | /* get the virtual kernel address address */ |
790cf1b9 | 643 | error = get_user(va, &(((struct sep_driver_write_t *) arg)->datapool_address)); |
0a18d7b5 AC |
644 | if (error) |
645 | goto end_function; | |
790cf1b9 | 646 | virt_address = (void *)va; |
cd1bb431 | 647 | |
0a18d7b5 AC |
648 | /* get the number of bytes */ |
649 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
650 | if (error) | |
651 | goto end_function; | |
cd1bb431 | 652 | |
0a18d7b5 | 653 | /* calculate the start of the data pool */ |
70ae04e6 | 654 | data_pool_area_addr = sep->shared_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; |
cd1bb431 | 655 | |
cd1bb431 | 656 | |
0a18d7b5 | 657 | /* check that the range of the virtual kernel address is correct */ |
ca605bb6 | 658 | if (virt_address < data_pool_area_addr || virt_address > (data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES)) { |
51faa9d2 | 659 | error = -EINVAL; |
d19cf32f | 660 | goto end_function; |
cd1bb431 | 661 | } |
0a18d7b5 | 662 | /* copy the application data */ |
790cf1b9 | 663 | error = copy_from_user(virt_address, (void *) app_in_address, num_bytes); |
0a18d7b5 AC |
664 | end_function: |
665 | dbg("SEP Driver:<-------- sep_write_into_data_pool_handler end\n"); | |
666 | return error; | |
667 | } | |
cd1bb431 | 668 | |
0a18d7b5 AC |
669 | /* |
670 | this function handles the read from data pool command | |
671 | */ | |
ca605bb6 | 672 | static int sep_read_from_data_pool_handler(struct sep_device *sep, unsigned long arg) |
0a18d7b5 AC |
673 | { |
674 | int error; | |
675 | /* virtual address of dest application buffer */ | |
676 | unsigned long app_out_address; | |
677 | /* virtual address of the data pool */ | |
790cf1b9 AC |
678 | unsigned long va; |
679 | void *virt_address; | |
0a18d7b5 | 680 | unsigned long num_bytes; |
790cf1b9 | 681 | void *data_pool_area_addr; |
cd1bb431 | 682 | |
0a18d7b5 | 683 | dbg("SEP Driver:--------> sep_read_from_data_pool_handler start\n"); |
cd1bb431 | 684 | |
0a18d7b5 AC |
685 | /* get the application address */ |
686 | error = get_user(app_out_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
687 | if (error) | |
688 | goto end_function; | |
cd1bb431 | 689 | |
0a18d7b5 | 690 | /* get the virtual kernel address address */ |
790cf1b9 | 691 | error = get_user(va, &(((struct sep_driver_write_t *) arg)->datapool_address)); |
0a18d7b5 AC |
692 | if (error) |
693 | goto end_function; | |
790cf1b9 | 694 | virt_address = (void *)va; |
cd1bb431 | 695 | |
0a18d7b5 AC |
696 | /* get the number of bytes */ |
697 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
698 | if (error) | |
699 | goto end_function; | |
cd1bb431 | 700 | |
0a18d7b5 | 701 | /* calculate the start of the data pool */ |
70ae04e6 | 702 | data_pool_area_addr = sep->shared_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; |
d19cf32f | 703 | |
ca605bb6 AC |
704 | /* FIXME: These are incomplete all over the driver: what about + len |
705 | and when doing that also overflows */ | |
0a18d7b5 | 706 | /* check that the range of the virtual kernel address is correct */ |
ca605bb6 | 707 | if (virt_address < data_pool_area_addr || virt_address > data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { |
51faa9d2 | 708 | error = -EINVAL; |
0a18d7b5 AC |
709 | goto end_function; |
710 | } | |
d19cf32f | 711 | |
0a18d7b5 | 712 | /* copy the application data */ |
790cf1b9 | 713 | error = copy_to_user((void *) app_out_address, virt_address, num_bytes); |
0a18d7b5 AC |
714 | end_function: |
715 | dbg("SEP Driver:<-------- sep_read_from_data_pool_handler end\n"); | |
716 | return error; | |
717 | } | |
d19cf32f | 718 | |
0a18d7b5 AC |
719 | /* |
720 | This function releases all the application virtual buffer physical pages, | |
721 | that were previously locked | |
722 | */ | |
723 | static int sep_free_dma_pages(struct page **page_array_ptr, unsigned long num_pages, unsigned long dirtyFlag) | |
724 | { | |
725 | unsigned long count; | |
d19cf32f | 726 | |
0a18d7b5 AC |
727 | if (dirtyFlag) { |
728 | for (count = 0; count < num_pages; count++) { | |
729 | /* the out array was written, therefore the data was changed */ | |
730 | if (!PageReserved(page_array_ptr[count])) | |
731 | SetPageDirty(page_array_ptr[count]); | |
732 | page_cache_release(page_array_ptr[count]); | |
d19cf32f | 733 | } |
0a18d7b5 AC |
734 | } else { |
735 | /* free in pages - the data was only read, therefore no update was done | |
736 | on those pages */ | |
737 | for (count = 0; count < num_pages; count++) | |
738 | page_cache_release(page_array_ptr[count]); | |
d19cf32f AC |
739 | } |
740 | ||
0a18d7b5 AC |
741 | if (page_array_ptr) |
742 | /* free the array */ | |
743 | kfree(page_array_ptr); | |
d19cf32f | 744 | |
d19cf32f | 745 | return 0; |
cd1bb431 MA |
746 | } |
747 | ||
748 | /* | |
0a18d7b5 AC |
749 | This function locks all the physical pages of the kernel virtual buffer |
750 | and construct a basic lli array, where each entry holds the physical | |
751 | page address and the size that application data holds in this physical pages | |
cd1bb431 | 752 | */ |
ca605bb6 AC |
753 | static int sep_lock_kernel_pages(struct sep_device *sep, |
754 | unsigned long kernel_virt_addr, | |
755 | unsigned long data_size, | |
756 | unsigned long *num_pages_ptr, | |
757 | struct sep_lli_entry_t **lli_array_ptr, | |
758 | struct page ***page_array_ptr) | |
cd1bb431 | 759 | { |
0a18d7b5 AC |
760 | int error = 0; |
761 | /* the the page of the end address of the user space buffer */ | |
762 | unsigned long end_page; | |
763 | /* the page of the start address of the user space buffer */ | |
764 | unsigned long start_page; | |
765 | /* the range in pages */ | |
766 | unsigned long num_pages; | |
767 | struct sep_lli_entry_t *lli_array; | |
768 | /* next kernel address to map */ | |
769 | unsigned long next_kernel_address; | |
770 | unsigned long count; | |
cd1bb431 | 771 | |
0a18d7b5 | 772 | dbg("SEP Driver:--------> sep_lock_kernel_pages start\n"); |
cd1bb431 | 773 | |
0a18d7b5 AC |
774 | /* set start and end pages and num pages */ |
775 | end_page = (kernel_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
776 | start_page = kernel_virt_addr >> PAGE_SHIFT; | |
777 | num_pages = end_page - start_page + 1; | |
cd1bb431 | 778 | |
0a18d7b5 AC |
779 | edbg("SEP Driver: kernel_virt_addr is %08lx\n", kernel_virt_addr); |
780 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
781 | edbg("SEP Driver: start_page is %lx\n", start_page); | |
782 | edbg("SEP Driver: end_page is %lx\n", end_page); | |
783 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
d19cf32f | 784 | |
0a18d7b5 AC |
785 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
786 | if (!lli_array) { | |
787 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
788 | error = -ENOMEM; | |
789 | goto end_function; | |
cd1bb431 | 790 | } |
cd1bb431 | 791 | |
0a18d7b5 AC |
792 | /* set the start address of the first page - app data may start not at |
793 | the beginning of the page */ | |
794 | lli_array[0].physical_address = (unsigned long) virt_to_phys((unsigned long *) kernel_virt_addr); | |
cd1bb431 | 795 | |
0a18d7b5 AC |
796 | /* check that not all the data is in the first page only */ |
797 | if ((PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK))) >= data_size) | |
798 | lli_array[0].block_size = data_size; | |
799 | else | |
800 | lli_array[0].block_size = PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK)); | |
801 | ||
802 | /* debug print */ | |
803 | 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); | |
804 | ||
805 | /* advance the address to the start of the next page */ | |
806 | next_kernel_address = (kernel_virt_addr & PAGE_MASK) + PAGE_SIZE; | |
807 | ||
808 | /* go from the second page to the prev before last */ | |
809 | for (count = 1; count < (num_pages - 1); count++) { | |
810 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
811 | lli_array[count].block_size = PAGE_SIZE; | |
812 | ||
813 | 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); | |
814 | next_kernel_address += PAGE_SIZE; | |
d19cf32f | 815 | } |
cd1bb431 | 816 | |
0a18d7b5 AC |
817 | /* if more then 1 pages locked - then update for the last page size needed */ |
818 | if (num_pages > 1) { | |
819 | /* update the address of the last page */ | |
820 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
cd1bb431 | 821 | |
0a18d7b5 AC |
822 | /* set the size of the last page */ |
823 | lli_array[count].block_size = (kernel_virt_addr + data_size) & (~PAGE_MASK); | |
cd1bb431 | 824 | |
0a18d7b5 AC |
825 | if (lli_array[count].block_size == 0) { |
826 | dbg("app_virt_addr is %08lx\n", kernel_virt_addr); | |
827 | dbg("data_size is %lu\n", data_size); | |
828 | while (1); | |
829 | } | |
cd1bb431 | 830 | |
0a18d7b5 AC |
831 | 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); |
832 | } | |
833 | /* set output params */ | |
834 | *lli_array_ptr = lli_array; | |
835 | *num_pages_ptr = num_pages; | |
836 | *page_array_ptr = 0; | |
837 | end_function: | |
838 | dbg("SEP Driver:<-------- sep_lock_kernel_pages end\n"); | |
839 | return 0; | |
840 | } | |
841 | ||
842 | /* | |
843 | This function locks all the physical pages of the application virtual buffer | |
844 | and construct a basic lli array, where each entry holds the physical page | |
845 | address and the size that application data holds in this physical pages | |
cd1bb431 | 846 | */ |
ca605bb6 AC |
847 | static int sep_lock_user_pages(struct sep_device *sep, |
848 | unsigned long app_virt_addr, | |
849 | unsigned long data_size, | |
850 | unsigned long *num_pages_ptr, | |
851 | struct sep_lli_entry_t **lli_array_ptr, | |
852 | struct page ***page_array_ptr) | |
cd1bb431 | 853 | { |
0a18d7b5 AC |
854 | int error = 0; |
855 | /* the the page of the end address of the user space buffer */ | |
856 | unsigned long end_page; | |
857 | /* the page of the start address of the user space buffer */ | |
858 | unsigned long start_page; | |
859 | /* the range in pages */ | |
860 | unsigned long num_pages; | |
861 | struct page **page_array; | |
862 | struct sep_lli_entry_t *lli_array; | |
863 | unsigned long count; | |
864 | int result; | |
d19cf32f | 865 | |
0a18d7b5 | 866 | dbg("SEP Driver:--------> sep_lock_user_pages start\n"); |
d19cf32f | 867 | |
0a18d7b5 AC |
868 | /* set start and end pages and num pages */ |
869 | end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
870 | start_page = app_virt_addr >> PAGE_SHIFT; | |
871 | num_pages = end_page - start_page + 1; | |
d19cf32f | 872 | |
0a18d7b5 AC |
873 | edbg("SEP Driver: app_virt_addr is %08lx\n", app_virt_addr); |
874 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
875 | edbg("SEP Driver: start_page is %lu\n", start_page); | |
876 | edbg("SEP Driver: end_page is %lu\n", end_page); | |
877 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
d19cf32f | 878 | |
0a18d7b5 AC |
879 | /* allocate array of pages structure pointers */ |
880 | page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); | |
881 | if (!page_array) { | |
882 | edbg("SEP Driver: kmalloc for page_array failed\n"); | |
d19cf32f | 883 | |
0a18d7b5 AC |
884 | error = -ENOMEM; |
885 | goto end_function; | |
886 | } | |
d19cf32f | 887 | |
0a18d7b5 AC |
888 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
889 | if (!lli_array) { | |
890 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
d19cf32f | 891 | |
0a18d7b5 AC |
892 | error = -ENOMEM; |
893 | goto end_function_with_error1; | |
894 | } | |
d19cf32f | 895 | |
0a18d7b5 AC |
896 | /* convert the application virtual address into a set of physical */ |
897 | down_read(¤t->mm->mmap_sem); | |
898 | result = get_user_pages(current, current->mm, app_virt_addr, num_pages, 1, 0, page_array, 0); | |
899 | up_read(¤t->mm->mmap_sem); | |
d19cf32f | 900 | |
0a18d7b5 AC |
901 | /* check the number of pages locked - if not all then exit with error */ |
902 | if (result != num_pages) { | |
903 | dbg("SEP Driver: not all pages locked by get_user_pages\n"); | |
d19cf32f | 904 | |
0a18d7b5 AC |
905 | error = -ENOMEM; |
906 | goto end_function_with_error2; | |
907 | } | |
d19cf32f | 908 | |
0a18d7b5 AC |
909 | /* flush the cache */ |
910 | for (count = 0; count < num_pages; count++) | |
911 | flush_dcache_page(page_array[count]); | |
d19cf32f | 912 | |
0a18d7b5 AC |
913 | /* set the start address of the first page - app data may start not at |
914 | the beginning of the page */ | |
915 | lli_array[0].physical_address = ((unsigned long) page_to_phys(page_array[0])) + (app_virt_addr & (~PAGE_MASK)); | |
d19cf32f | 916 | |
0a18d7b5 AC |
917 | /* check that not all the data is in the first page only */ |
918 | if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size) | |
919 | lli_array[0].block_size = data_size; | |
920 | else | |
921 | lli_array[0].block_size = PAGE_SIZE - (app_virt_addr & (~PAGE_MASK)); | |
d19cf32f | 922 | |
0a18d7b5 AC |
923 | /* debug print */ |
924 | 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 | 925 | |
0a18d7b5 AC |
926 | /* go from the second page to the prev before last */ |
927 | for (count = 1; count < (num_pages - 1); count++) { | |
928 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
929 | lli_array[count].block_size = PAGE_SIZE; | |
d19cf32f | 930 | |
0a18d7b5 AC |
931 | 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); |
932 | } | |
d19cf32f | 933 | |
0a18d7b5 AC |
934 | /* if more then 1 pages locked - then update for the last page size needed */ |
935 | if (num_pages > 1) { | |
936 | /* update the address of the last page */ | |
937 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
d19cf32f | 938 | |
0a18d7b5 AC |
939 | /* set the size of the last page */ |
940 | lli_array[count].block_size = (app_virt_addr + data_size) & (~PAGE_MASK); | |
d19cf32f | 941 | |
0a18d7b5 AC |
942 | if (lli_array[count].block_size == 0) { |
943 | dbg("app_virt_addr is %08lx\n", app_virt_addr); | |
944 | dbg("data_size is %lu\n", data_size); | |
945 | while (1); | |
946 | } | |
c7e10c99 JP |
947 | edbg("lli_array[%lu].physical_address is %08lx, lli_array[%lu].block_size is %lu\n", |
948 | count, lli_array[count].physical_address, | |
949 | count, lli_array[count].block_size); | |
cd1bb431 MA |
950 | } |
951 | ||
0a18d7b5 AC |
952 | /* set output params */ |
953 | *lli_array_ptr = lli_array; | |
954 | *num_pages_ptr = num_pages; | |
955 | *page_array_ptr = page_array; | |
956 | goto end_function; | |
957 | ||
958 | end_function_with_error2: | |
959 | /* release the cache */ | |
960 | for (count = 0; count < num_pages; count++) | |
961 | page_cache_release(page_array[count]); | |
962 | kfree(lli_array); | |
963 | end_function_with_error1: | |
964 | kfree(page_array); | |
965 | end_function: | |
966 | dbg("SEP Driver:<-------- sep_lock_user_pages end\n"); | |
d19cf32f | 967 | return 0; |
cd1bb431 MA |
968 | } |
969 | ||
0a18d7b5 | 970 | |
cd1bb431 MA |
971 | /* |
972 | this function calculates the size of data that can be inserted into the lli | |
973 | table from this array the condition is that either the table is full | |
974 | (all etnries are entered), or there are no more entries in the lli array | |
975 | */ | |
b10b483e | 976 | static unsigned long sep_calculate_lli_table_max_size(struct sep_lli_entry_t *lli_in_array_ptr, unsigned long num_array_entries) |
cd1bb431 | 977 | { |
f93e4bf9 | 978 | unsigned long table_data_size = 0; |
d19cf32f | 979 | unsigned long counter; |
cd1bb431 | 980 | |
d19cf32f AC |
981 | /* calculate the data in the out lli table if till we fill the whole |
982 | table or till the data has ended */ | |
983 | for (counter = 0; (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) && (counter < num_array_entries); counter++) | |
984 | table_data_size += lli_in_array_ptr[counter].block_size; | |
d19cf32f | 985 | return table_data_size; |
cd1bb431 MA |
986 | } |
987 | ||
988 | /* | |
989 | this functions builds ont lli table from the lli_array according to | |
990 | the given size of data | |
991 | */ | |
d19cf32f | 992 | 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 | 993 | { |
d19cf32f | 994 | unsigned long curr_table_data_size; |
d19cf32f AC |
995 | /* counter of lli array entry */ |
996 | unsigned long array_counter; | |
cd1bb431 | 997 | |
d19cf32f AC |
998 | dbg("SEP Driver:--------> sep_build_lli_table start\n"); |
999 | ||
1000 | /* init currrent table data size and lli array entry counter */ | |
1001 | curr_table_data_size = 0; | |
1002 | array_counter = 0; | |
1003 | *num_table_entries_ptr = 1; | |
1004 | ||
1005 | edbg("SEP Driver:table_data_size is %lu\n", table_data_size); | |
1006 | ||
1007 | /* fill the table till table size reaches the needed amount */ | |
1008 | while (curr_table_data_size < table_data_size) { | |
1009 | /* update the number of entries in table */ | |
1010 | (*num_table_entries_ptr)++; | |
1011 | ||
1012 | lli_table_ptr->physical_address = lli_array_ptr[array_counter].physical_address; | |
1013 | lli_table_ptr->block_size = lli_array_ptr[array_counter].block_size; | |
1014 | curr_table_data_size += lli_table_ptr->block_size; | |
1015 | ||
1016 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1017 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1018 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1019 | ||
1020 | /* check for overflow of the table data */ | |
1021 | if (curr_table_data_size > table_data_size) { | |
1022 | edbg("SEP Driver:curr_table_data_size > table_data_size\n"); | |
1023 | ||
1024 | /* update the size of block in the table */ | |
1025 | lli_table_ptr->block_size -= (curr_table_data_size - table_data_size); | |
1026 | ||
1027 | /* update the physical address in the lli array */ | |
1028 | lli_array_ptr[array_counter].physical_address += lli_table_ptr->block_size; | |
1029 | ||
1030 | /* update the block size left in the lli array */ | |
1031 | lli_array_ptr[array_counter].block_size = (curr_table_data_size - table_data_size); | |
1032 | } else | |
1033 | /* advance to the next entry in the lli_array */ | |
1034 | array_counter++; | |
1035 | ||
1036 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1037 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1038 | ||
1039 | /* move to the next entry in table */ | |
1040 | lli_table_ptr++; | |
1041 | } | |
1042 | ||
1043 | /* set the info entry to default */ | |
1044 | lli_table_ptr->physical_address = 0xffffffff; | |
1045 | lli_table_ptr->block_size = 0; | |
1046 | ||
1047 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1048 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1049 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1050 | ||
d19cf32f AC |
1051 | /* set the output parameter */ |
1052 | *num_processed_entries_ptr += array_counter; | |
1053 | ||
1054 | edbg("SEP Driver:*num_processed_entries_ptr is %lu\n", *num_processed_entries_ptr); | |
d19cf32f | 1055 | dbg("SEP Driver:<-------- sep_build_lli_table end\n"); |
d19cf32f | 1056 | return; |
cd1bb431 MA |
1057 | } |
1058 | ||
1059 | /* | |
1060 | this function goes over the list of the print created tables and | |
1061 | prints all the data | |
1062 | */ | |
ca605bb6 | 1063 | 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 | 1064 | { |
d19cf32f | 1065 | unsigned long table_count; |
d19cf32f | 1066 | unsigned long entries_count; |
cd1bb431 | 1067 | |
d19cf32f | 1068 | dbg("SEP Driver:--------> sep_debug_print_lli_tables start\n"); |
cd1bb431 | 1069 | |
d19cf32f AC |
1070 | table_count = 1; |
1071 | while ((unsigned long) lli_table_ptr != 0xffffffff) { | |
1072 | edbg("SEP Driver: lli table %08lx, table_data_size is %lu\n", table_count, table_data_size); | |
1073 | edbg("SEP Driver: num_table_entries is %lu\n", num_table_entries); | |
cd1bb431 | 1074 | |
d19cf32f AC |
1075 | /* print entries of the table (without info entry) */ |
1076 | for (entries_count = 0; entries_count < num_table_entries; entries_count++, lli_table_ptr++) { | |
1077 | edbg("SEP Driver:lli_table_ptr address is %08lx\n", (unsigned long) lli_table_ptr); | |
1078 | edbg("SEP Driver:phys address is %08lx block size is %lu\n", lli_table_ptr->physical_address, lli_table_ptr->block_size); | |
1079 | } | |
cd1bb431 | 1080 | |
d19cf32f AC |
1081 | /* point to the info entry */ |
1082 | lli_table_ptr--; | |
cd1bb431 | 1083 | |
d19cf32f AC |
1084 | edbg("SEP Driver:phys lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); |
1085 | edbg("SEP Driver:phys lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
cd1bb431 | 1086 | |
cd1bb431 | 1087 | |
d19cf32f AC |
1088 | table_data_size = lli_table_ptr->block_size & 0xffffff; |
1089 | num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff; | |
1090 | lli_table_ptr = (struct sep_lli_entry_t *) | |
1091 | (lli_table_ptr->physical_address); | |
cd1bb431 | 1092 | |
d19cf32f | 1093 | 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 | 1094 | |
d19cf32f | 1095 | if ((unsigned long) lli_table_ptr != 0xffffffff) |
70ae04e6 | 1096 | lli_table_ptr = (struct sep_lli_entry_t *) sep_shared_bus_to_virt(sep, (unsigned long) lli_table_ptr); |
d19cf32f AC |
1097 | |
1098 | table_count++; | |
1099 | } | |
d19cf32f | 1100 | dbg("SEP Driver:<-------- sep_debug_print_lli_tables end\n"); |
cd1bb431 MA |
1101 | } |
1102 | ||
1103 | ||
1104 | /* | |
0a18d7b5 AC |
1105 | This function prepares only input DMA table for synhronic symmetric |
1106 | operations (HASH) | |
cd1bb431 | 1107 | */ |
ca605bb6 AC |
1108 | static int sep_prepare_input_dma_table(struct sep_device *sep, |
1109 | unsigned long app_virt_addr, | |
1110 | unsigned long data_size, | |
1111 | unsigned long block_size, | |
1112 | unsigned long *lli_table_ptr, | |
1113 | unsigned long *num_entries_ptr, | |
1114 | unsigned long *table_data_size_ptr, | |
1115 | bool isKernelVirtualAddress) | |
cd1bb431 | 1116 | { |
0a18d7b5 AC |
1117 | /* pointer to the info entry of the table - the last entry */ |
1118 | struct sep_lli_entry_t *info_entry_ptr; | |
1119 | /* array of pointers ot page */ | |
1120 | struct sep_lli_entry_t *lli_array_ptr; | |
1121 | /* points to the first entry to be processed in the lli_in_array */ | |
1122 | unsigned long current_entry; | |
1123 | /* num entries in the virtual buffer */ | |
1124 | unsigned long sep_lli_entries; | |
1125 | /* lli table pointer */ | |
1126 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1127 | /* the total data in one table */ | |
1128 | unsigned long table_data_size; | |
1129 | /* number of entries in lli table */ | |
1130 | unsigned long num_entries_in_table; | |
1131 | /* next table address */ | |
790cf1b9 | 1132 | void *lli_table_alloc_addr; |
0a18d7b5 | 1133 | unsigned long result; |
cd1bb431 | 1134 | |
0a18d7b5 | 1135 | dbg("SEP Driver:--------> sep_prepare_input_dma_table start\n"); |
d19cf32f | 1136 | |
0a18d7b5 AC |
1137 | edbg("SEP Driver:data_size is %lu\n", data_size); |
1138 | edbg("SEP Driver:block_size is %lu\n", block_size); | |
d19cf32f | 1139 | |
0a18d7b5 | 1140 | /* initialize the pages pointers */ |
ca605bb6 AC |
1141 | sep->in_page_array = 0; |
1142 | sep->in_num_pages = 0; | |
d19cf32f | 1143 | |
0a18d7b5 AC |
1144 | if (data_size == 0) { |
1145 | /* special case - created 2 entries table with zero data */ | |
70ae04e6 | 1146 | in_lli_table_ptr = (struct sep_lli_entry_t *) (sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES); |
790cf1b9 | 1147 | /* FIXME: Should the entry below not be for _bus */ |
70ae04e6 | 1148 | in_lli_table_ptr->physical_address = (unsigned long)sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
0a18d7b5 AC |
1149 | in_lli_table_ptr->block_size = 0; |
1150 | ||
1151 | in_lli_table_ptr++; | |
1152 | in_lli_table_ptr->physical_address = 0xFFFFFFFF; | |
1153 | in_lli_table_ptr->block_size = 0; | |
1154 | ||
70ae04e6 | 1155 | *lli_table_ptr = sep->shared_bus + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
0a18d7b5 AC |
1156 | *num_entries_ptr = 2; |
1157 | *table_data_size_ptr = 0; | |
d19cf32f | 1158 | |
d19cf32f | 1159 | goto end_function; |
cd1bb431 | 1160 | } |
cd1bb431 | 1161 | |
0a18d7b5 AC |
1162 | /* check if the pages are in Kernel Virtual Address layout */ |
1163 | if (isKernelVirtualAddress == true) | |
1164 | /* lock the pages of the kernel buffer and translate them to pages */ | |
ca605bb6 | 1165 | result = sep_lock_kernel_pages(sep, app_virt_addr, data_size, &sep->in_num_pages, &lli_array_ptr, &sep->in_page_array); |
0a18d7b5 AC |
1166 | else |
1167 | /* lock the pages of the user buffer and translate them to pages */ | |
ca605bb6 | 1168 | result = sep_lock_user_pages(sep, app_virt_addr, data_size, &sep->in_num_pages, &lli_array_ptr, &sep->in_page_array); |
cd1bb431 | 1169 | |
0a18d7b5 AC |
1170 | if (result) |
1171 | return result; | |
cd1bb431 | 1172 | |
ca605bb6 | 1173 | edbg("SEP Driver:output sep->in_num_pages is %lu\n", sep->in_num_pages); |
cd1bb431 | 1174 | |
0a18d7b5 AC |
1175 | current_entry = 0; |
1176 | info_entry_ptr = 0; | |
ca605bb6 | 1177 | sep_lli_entries = sep->in_num_pages; |
d19cf32f | 1178 | |
0a18d7b5 | 1179 | /* initiate to point after the message area */ |
70ae04e6 | 1180 | lli_table_alloc_addr = sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
d19cf32f | 1181 | |
0a18d7b5 AC |
1182 | /* loop till all the entries in in array are not processed */ |
1183 | while (current_entry < sep_lli_entries) { | |
1184 | /* set the new input and output tables */ | |
1185 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
d19cf32f | 1186 | |
0a18d7b5 | 1187 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
d19cf32f | 1188 | |
0a18d7b5 AC |
1189 | /* calculate the maximum size of data for input table */ |
1190 | table_data_size = sep_calculate_lli_table_max_size(&lli_array_ptr[current_entry], (sep_lli_entries - current_entry)); | |
d19cf32f | 1191 | |
0a18d7b5 AC |
1192 | /* now calculate the table size so that it will be module block size */ |
1193 | table_data_size = (table_data_size / block_size) * block_size; | |
d19cf32f | 1194 | |
0a18d7b5 | 1195 | edbg("SEP Driver:output table_data_size is %lu\n", table_data_size); |
d19cf32f | 1196 | |
0a18d7b5 AC |
1197 | /* construct input lli table */ |
1198 | sep_build_lli_table(&lli_array_ptr[current_entry], in_lli_table_ptr, ¤t_entry, &num_entries_in_table, table_data_size); | |
d19cf32f | 1199 | |
0a18d7b5 AC |
1200 | if (info_entry_ptr == 0) { |
1201 | /* set the output parameters to physical addresses */ | |
70ae04e6 | 1202 | *lli_table_ptr = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 AC |
1203 | *num_entries_ptr = num_entries_in_table; |
1204 | *table_data_size_ptr = table_data_size; | |
d19cf32f | 1205 | |
0a18d7b5 AC |
1206 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_ptr); |
1207 | } else { | |
1208 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1209 | info_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 | 1210 | info_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); |
d19cf32f | 1211 | } |
0a18d7b5 AC |
1212 | |
1213 | /* save the pointer to the info entry of the current tables */ | |
1214 | info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
d19cf32f AC |
1215 | } |
1216 | ||
0a18d7b5 | 1217 | /* print input tables */ |
ca605bb6 | 1218 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1219 | sep_shared_bus_to_virt(sep, *lli_table_ptr), *num_entries_ptr, *table_data_size_ptr); |
d19cf32f | 1220 | |
0a18d7b5 AC |
1221 | /* the array of the pages */ |
1222 | kfree(lli_array_ptr); | |
f93e4bf9 | 1223 | end_function: |
0a18d7b5 | 1224 | dbg("SEP Driver:<-------- sep_prepare_input_dma_table end\n"); |
d19cf32f | 1225 | return 0; |
0a18d7b5 | 1226 | |
cd1bb431 MA |
1227 | } |
1228 | ||
1229 | /* | |
0a18d7b5 AC |
1230 | This function creates the input and output dma tables for |
1231 | symmetric operations (AES/DES) according to the block size from LLI arays | |
cd1bb431 | 1232 | */ |
ca605bb6 AC |
1233 | static int sep_construct_dma_tables_from_lli(struct sep_device *sep, |
1234 | struct sep_lli_entry_t *lli_in_array, | |
0a18d7b5 AC |
1235 | unsigned long sep_in_lli_entries, |
1236 | struct sep_lli_entry_t *lli_out_array, | |
1237 | unsigned long sep_out_lli_entries, | |
1238 | 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 | 1239 | { |
790cf1b9 AC |
1240 | /* points to the area where next lli table can be allocated: keep void * |
1241 | as there is pointer scaling to fix otherwise */ | |
1242 | void *lli_table_alloc_addr; | |
0a18d7b5 AC |
1243 | /* input lli table */ |
1244 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1245 | /* output lli table */ | |
1246 | struct sep_lli_entry_t *out_lli_table_ptr; | |
1247 | /* pointer to the info entry of the table - the last entry */ | |
1248 | struct sep_lli_entry_t *info_in_entry_ptr; | |
1249 | /* pointer to the info entry of the table - the last entry */ | |
1250 | struct sep_lli_entry_t *info_out_entry_ptr; | |
1251 | /* points to the first entry to be processed in the lli_in_array */ | |
1252 | unsigned long current_in_entry; | |
1253 | /* points to the first entry to be processed in the lli_out_array */ | |
1254 | unsigned long current_out_entry; | |
1255 | /* max size of the input table */ | |
1256 | unsigned long in_table_data_size; | |
1257 | /* max size of the output table */ | |
1258 | unsigned long out_table_data_size; | |
1259 | /* flag te signifies if this is the first tables build from the arrays */ | |
1260 | unsigned long first_table_flag; | |
1261 | /* the data size that should be in table */ | |
1262 | unsigned long table_data_size; | |
1263 | /* number of etnries in the input table */ | |
1264 | unsigned long num_entries_in_table; | |
1265 | /* number of etnries in the output table */ | |
1266 | unsigned long num_entries_out_table; | |
cd1bb431 | 1267 | |
0a18d7b5 | 1268 | dbg("SEP Driver:--------> sep_construct_dma_tables_from_lli start\n"); |
d19cf32f | 1269 | |
0a18d7b5 | 1270 | /* initiate to pint after the message area */ |
70ae04e6 | 1271 | lli_table_alloc_addr = sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
d19cf32f | 1272 | |
0a18d7b5 AC |
1273 | current_in_entry = 0; |
1274 | current_out_entry = 0; | |
1275 | first_table_flag = 1; | |
1276 | info_in_entry_ptr = 0; | |
1277 | info_out_entry_ptr = 0; | |
d19cf32f | 1278 | |
0a18d7b5 AC |
1279 | /* loop till all the entries in in array are not processed */ |
1280 | while (current_in_entry < sep_in_lli_entries) { | |
1281 | /* set the new input and output tables */ | |
1282 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 1283 | |
0a18d7b5 | 1284 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
cd1bb431 | 1285 | |
0a18d7b5 AC |
1286 | /* set the first output tables */ |
1287 | out_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 1288 | |
0a18d7b5 | 1289 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
d19cf32f | 1290 | |
0a18d7b5 AC |
1291 | /* calculate the maximum size of data for input table */ |
1292 | in_table_data_size = sep_calculate_lli_table_max_size(&lli_in_array[current_in_entry], (sep_in_lli_entries - current_in_entry)); | |
d19cf32f | 1293 | |
0a18d7b5 AC |
1294 | /* calculate the maximum size of data for output table */ |
1295 | out_table_data_size = sep_calculate_lli_table_max_size(&lli_out_array[current_out_entry], (sep_out_lli_entries - current_out_entry)); | |
d19cf32f | 1296 | |
0a18d7b5 AC |
1297 | edbg("SEP Driver:in_table_data_size is %lu\n", in_table_data_size); |
1298 | edbg("SEP Driver:out_table_data_size is %lu\n", out_table_data_size); | |
cd1bb431 | 1299 | |
0a18d7b5 AC |
1300 | /* check where the data is smallest */ |
1301 | table_data_size = in_table_data_size; | |
1302 | if (table_data_size > out_table_data_size) | |
1303 | table_data_size = out_table_data_size; | |
cd1bb431 | 1304 | |
0a18d7b5 AC |
1305 | /* now calculate the table size so that it will be module block size */ |
1306 | table_data_size = (table_data_size / block_size) * block_size; | |
cd1bb431 | 1307 | |
0a18d7b5 AC |
1308 | dbg("SEP Driver:table_data_size is %lu\n", table_data_size); |
1309 | ||
1310 | /* construct input lli table */ | |
1311 | sep_build_lli_table(&lli_in_array[current_in_entry], in_lli_table_ptr, ¤t_in_entry, &num_entries_in_table, table_data_size); | |
1312 | ||
1313 | /* construct output lli table */ | |
1314 | sep_build_lli_table(&lli_out_array[current_out_entry], out_lli_table_ptr, ¤t_out_entry, &num_entries_out_table, table_data_size); | |
1315 | ||
1316 | /* if info entry is null - this is the first table built */ | |
1317 | if (info_in_entry_ptr == 0) { | |
1318 | /* set the output parameters to physical addresses */ | |
70ae04e6 | 1319 | *lli_table_in_ptr = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 | 1320 | *in_num_entries_ptr = num_entries_in_table; |
70ae04e6 | 1321 | *lli_table_out_ptr = sep_shared_virt_to_bus(sep, out_lli_table_ptr); |
0a18d7b5 AC |
1322 | *out_num_entries_ptr = num_entries_out_table; |
1323 | *table_data_size_ptr = table_data_size; | |
1324 | ||
1325 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr); | |
1326 | edbg("SEP Driver:output lli_table_out_ptr is %08lx\n", *lli_table_out_ptr); | |
1327 | } else { | |
1328 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1329 | info_in_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 AC |
1330 | info_in_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); |
1331 | ||
1332 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1333 | info_out_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, out_lli_table_ptr); |
0a18d7b5 | 1334 | info_out_entry_ptr->block_size = ((num_entries_out_table) << 24) | (table_data_size); |
d19cf32f AC |
1335 | } |
1336 | ||
0a18d7b5 AC |
1337 | /* save the pointer to the info entry of the current tables */ |
1338 | info_in_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
1339 | info_out_entry_ptr = out_lli_table_ptr + num_entries_out_table - 1; | |
1340 | ||
1341 | edbg("SEP Driver:output num_entries_out_table is %lu\n", (unsigned long) num_entries_out_table); | |
1342 | edbg("SEP Driver:output info_in_entry_ptr is %lu\n", (unsigned long) info_in_entry_ptr); | |
1343 | edbg("SEP Driver:output info_out_entry_ptr is %lu\n", (unsigned long) info_out_entry_ptr); | |
d19cf32f | 1344 | } |
0a18d7b5 AC |
1345 | |
1346 | /* print input tables */ | |
ca605bb6 | 1347 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1348 | sep_shared_bus_to_virt(sep, *lli_table_in_ptr), *in_num_entries_ptr, *table_data_size_ptr); |
0a18d7b5 | 1349 | /* print output tables */ |
ca605bb6 | 1350 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1351 | sep_shared_bus_to_virt(sep, *lli_table_out_ptr), *out_num_entries_ptr, *table_data_size_ptr); |
0a18d7b5 | 1352 | dbg("SEP Driver:<-------- sep_construct_dma_tables_from_lli end\n"); |
d19cf32f | 1353 | return 0; |
cd1bb431 MA |
1354 | } |
1355 | ||
0a18d7b5 | 1356 | |
cd1bb431 | 1357 | /* |
0a18d7b5 AC |
1358 | This function builds input and output DMA tables for synhronic |
1359 | symmetric operations (AES, DES). It also checks that each table | |
1360 | is of the modular block size | |
cd1bb431 | 1361 | */ |
ca605bb6 AC |
1362 | static int sep_prepare_input_output_dma_table(struct sep_device *sep, |
1363 | unsigned long app_virt_in_addr, | |
0a18d7b5 AC |
1364 | unsigned long app_virt_out_addr, |
1365 | unsigned long data_size, | |
1366 | unsigned long block_size, | |
1367 | 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 | 1368 | { |
0a18d7b5 AC |
1369 | /* array of pointers of page */ |
1370 | struct sep_lli_entry_t *lli_in_array; | |
1371 | /* array of pointers of page */ | |
1372 | struct sep_lli_entry_t *lli_out_array; | |
1373 | int result = 0; | |
cd1bb431 | 1374 | |
0a18d7b5 AC |
1375 | dbg("SEP Driver:--------> sep_prepare_input_output_dma_table start\n"); |
1376 | ||
1377 | /* initialize the pages pointers */ | |
ca605bb6 AC |
1378 | sep->in_page_array = 0; |
1379 | sep->out_page_array = 0; | |
0a18d7b5 AC |
1380 | |
1381 | /* check if the pages are in Kernel Virtual Address layout */ | |
1382 | if (isKernelVirtualAddress == true) { | |
1383 | /* lock the pages of the kernel buffer and translate them to pages */ | |
ca605bb6 | 1384 | 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 |
1385 | if (result) { |
1386 | edbg("SEP Driver: sep_lock_kernel_pages for input virtual buffer failed\n"); | |
1387 | goto end_function; | |
d19cf32f AC |
1388 | } |
1389 | } else { | |
0a18d7b5 | 1390 | /* lock the pages of the user buffer and translate them to pages */ |
ca605bb6 | 1391 | 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 |
1392 | if (result) { |
1393 | edbg("SEP Driver: sep_lock_user_pages for input virtual buffer failed\n"); | |
1394 | goto end_function; | |
1395 | } | |
cd1bb431 | 1396 | } |
cd1bb431 | 1397 | |
0a18d7b5 | 1398 | if (isKernelVirtualAddress == true) { |
ca605bb6 | 1399 | 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 |
1400 | if (result) { |
1401 | edbg("SEP Driver: sep_lock_kernel_pages for output virtual buffer failed\n"); | |
1402 | goto end_function_with_error1; | |
1403 | } | |
1404 | } else { | |
ca605bb6 | 1405 | 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 |
1406 | if (result) { |
1407 | edbg("SEP Driver: sep_lock_user_pages for output virtual buffer failed\n"); | |
1408 | goto end_function_with_error1; | |
1409 | } | |
1410 | } | |
ca605bb6 AC |
1411 | edbg("sep->in_num_pages is %lu\n", sep->in_num_pages); |
1412 | edbg("sep->out_num_pages is %lu\n", sep->out_num_pages); | |
0a18d7b5 AC |
1413 | edbg("SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n", SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); |
1414 | ||
1415 | ||
1416 | /* call the fucntion that creates table from the lli arrays */ | |
ca605bb6 | 1417 | 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 |
1418 | if (result) { |
1419 | edbg("SEP Driver: sep_construct_dma_tables_from_lli failed\n"); | |
1420 | goto end_function_with_error2; | |
1421 | } | |
1422 | ||
1423 | /* fall through - free the lli entry arrays */ | |
1424 | dbg("in_num_entries_ptr is %08lx\n", *in_num_entries_ptr); | |
1425 | dbg("out_num_entries_ptr is %08lx\n", *out_num_entries_ptr); | |
1426 | dbg("table_data_size_ptr is %08lx\n", *table_data_size_ptr); | |
1427 | end_function_with_error2: | |
1428 | kfree(lli_out_array); | |
1429 | end_function_with_error1: | |
1430 | kfree(lli_in_array); | |
1431 | end_function: | |
1432 | dbg("SEP Driver:<-------- sep_prepare_input_output_dma_table end result = %d\n", (int) result); | |
1433 | return result; | |
cd1bb431 | 1434 | |
cd1bb431 MA |
1435 | } |
1436 | ||
1437 | /* | |
0a18d7b5 AC |
1438 | this function handles tha request for creation of the DMA table |
1439 | for the synchronic symmetric operations (AES,DES) | |
cd1bb431 | 1440 | */ |
ca605bb6 AC |
1441 | static int sep_create_sync_dma_tables_handler(struct sep_device *sep, |
1442 | unsigned long arg) | |
cd1bb431 | 1443 | { |
0a18d7b5 AC |
1444 | int error; |
1445 | /* command arguments */ | |
1446 | struct sep_driver_build_sync_table_t command_args; | |
cd1bb431 | 1447 | |
0a18d7b5 | 1448 | dbg("SEP Driver:--------> sep_create_sync_dma_tables_handler start\n"); |
cd1bb431 | 1449 | |
0a18d7b5 AC |
1450 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_sync_table_t)); |
1451 | if (error) | |
1452 | goto end_function; | |
cd1bb431 | 1453 | |
0a18d7b5 AC |
1454 | edbg("app_in_address is %08lx\n", command_args.app_in_address); |
1455 | edbg("app_out_address is %08lx\n", command_args.app_out_address); | |
1456 | edbg("data_size is %lu\n", command_args.data_in_size); | |
1457 | edbg("block_size is %lu\n", command_args.block_size); | |
cd1bb431 | 1458 | |
0a18d7b5 AC |
1459 | /* check if we need to build only input table or input/output */ |
1460 | if (command_args.app_out_address) | |
1461 | /* prepare input and output tables */ | |
ca605bb6 AC |
1462 | error = sep_prepare_input_output_dma_table(sep, |
1463 | command_args.app_in_address, | |
0a18d7b5 AC |
1464 | command_args.app_out_address, |
1465 | command_args.data_in_size, | |
1466 | command_args.block_size, | |
1467 | &command_args.in_table_address, | |
1468 | &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); | |
1469 | else | |
1470 | /* prepare input tables */ | |
ca605bb6 AC |
1471 | error = sep_prepare_input_dma_table(sep, |
1472 | command_args.app_in_address, | |
0a18d7b5 AC |
1473 | 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); |
1474 | ||
1475 | if (error) | |
1476 | goto end_function; | |
1477 | /* copy to user */ | |
51faa9d2 AC |
1478 | if (copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_build_sync_table_t))) |
1479 | error = -EFAULT; | |
0a18d7b5 AC |
1480 | end_function: |
1481 | dbg("SEP Driver:<-------- sep_create_sync_dma_tables_handler end\n"); | |
1482 | return error; | |
cd1bb431 MA |
1483 | } |
1484 | ||
1485 | /* | |
0a18d7b5 | 1486 | this function handles the request for freeing dma table for synhronic actions |
cd1bb431 | 1487 | */ |
ca605bb6 | 1488 | static int sep_free_dma_table_data_handler(struct sep_device *sep) |
cd1bb431 | 1489 | { |
0a18d7b5 | 1490 | dbg("SEP Driver:--------> sep_free_dma_table_data_handler start\n"); |
cd1bb431 | 1491 | |
0a18d7b5 | 1492 | /* free input pages array */ |
ca605bb6 | 1493 | sep_free_dma_pages(sep->in_page_array, sep->in_num_pages, 0); |
cd1bb431 | 1494 | |
0a18d7b5 | 1495 | /* free output pages array if needed */ |
ca605bb6 AC |
1496 | if (sep->out_page_array) |
1497 | sep_free_dma_pages(sep->out_page_array, sep->out_num_pages, 1); | |
cd1bb431 | 1498 | |
0a18d7b5 | 1499 | /* reset all the values */ |
ca605bb6 AC |
1500 | sep->in_page_array = 0; |
1501 | sep->out_page_array = 0; | |
1502 | sep->in_num_pages = 0; | |
1503 | sep->out_num_pages = 0; | |
0a18d7b5 AC |
1504 | dbg("SEP Driver:<-------- sep_free_dma_table_data_handler end\n"); |
1505 | return 0; | |
1506 | } | |
cd1bb431 MA |
1507 | |
1508 | /* | |
0a18d7b5 | 1509 | this function find a space for the new flow dma table |
cd1bb431 | 1510 | */ |
ca605bb6 AC |
1511 | static int sep_find_free_flow_dma_table_space(struct sep_device *sep, |
1512 | unsigned long **table_address_ptr) | |
cd1bb431 | 1513 | { |
0a18d7b5 AC |
1514 | int error = 0; |
1515 | /* pointer to the id field of the flow dma table */ | |
1516 | unsigned long *start_table_ptr; | |
790cf1b9 AC |
1517 | /* Do not make start_addr unsigned long * unless fixing the offset |
1518 | computations ! */ | |
1519 | void *flow_dma_area_start_addr; | |
1520 | unsigned long *flow_dma_area_end_addr; | |
0a18d7b5 AC |
1521 | /* maximum table size in words */ |
1522 | unsigned long table_size_in_words; | |
cd1bb431 | 1523 | |
0a18d7b5 | 1524 | /* find the start address of the flow DMA table area */ |
70ae04e6 | 1525 | flow_dma_area_start_addr = sep->shared_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
cd1bb431 | 1526 | |
0a18d7b5 AC |
1527 | /* set end address of the flow table area */ |
1528 | flow_dma_area_end_addr = flow_dma_area_start_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES; | |
cd1bb431 | 1529 | |
0a18d7b5 AC |
1530 | /* set table size in words */ |
1531 | table_size_in_words = SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE * (sizeof(struct sep_lli_entry_t) / sizeof(long)) + 2; | |
d19cf32f | 1532 | |
0a18d7b5 | 1533 | /* set the pointer to the start address of DMA area */ |
790cf1b9 | 1534 | start_table_ptr = flow_dma_area_start_addr; |
cd1bb431 | 1535 | |
0a18d7b5 | 1536 | /* find the space for the next table */ |
790cf1b9 | 1537 | while (((*start_table_ptr & 0x7FFFFFFF) != 0) && start_table_ptr < flow_dma_area_end_addr) |
0a18d7b5 | 1538 | start_table_ptr += table_size_in_words; |
cd1bb431 | 1539 | |
0a18d7b5 | 1540 | /* check if we reached the end of floa tables area */ |
790cf1b9 | 1541 | if (start_table_ptr >= flow_dma_area_end_addr) |
0a18d7b5 AC |
1542 | error = -1; |
1543 | else | |
1544 | *table_address_ptr = start_table_ptr; | |
cd1bb431 | 1545 | |
d19cf32f | 1546 | return error; |
cd1bb431 MA |
1547 | } |
1548 | ||
1549 | /* | |
0a18d7b5 AC |
1550 | This function creates one DMA table for flow and returns its data, |
1551 | and pointer to its info entry | |
cd1bb431 | 1552 | */ |
ca605bb6 AC |
1553 | static int sep_prepare_one_flow_dma_table(struct sep_device *sep, |
1554 | unsigned long virt_buff_addr, | |
1555 | unsigned long virt_buff_size, | |
1556 | struct sep_lli_entry_t *table_data, | |
1557 | struct sep_lli_entry_t **info_entry_ptr, | |
1558 | struct sep_flow_context_t *flow_data_ptr, | |
1559 | bool isKernelVirtualAddress) | |
cd1bb431 | 1560 | { |
d19cf32f | 1561 | int error; |
0a18d7b5 AC |
1562 | /* the range in pages */ |
1563 | unsigned long lli_array_size; | |
1564 | struct sep_lli_entry_t *lli_array; | |
1565 | struct sep_lli_entry_t *flow_dma_table_entry_ptr; | |
1566 | unsigned long *start_dma_table_ptr; | |
1567 | /* total table data counter */ | |
1568 | unsigned long dma_table_data_count; | |
1569 | /* pointer that will keep the pointer to the pages of the virtual buffer */ | |
1570 | struct page **page_array_ptr; | |
1571 | unsigned long entry_count; | |
cd1bb431 | 1572 | |
0a18d7b5 | 1573 | /* find the space for the new table */ |
ca605bb6 | 1574 | error = sep_find_free_flow_dma_table_space(sep, &start_dma_table_ptr); |
d19cf32f AC |
1575 | if (error) |
1576 | goto end_function; | |
cd1bb431 | 1577 | |
0a18d7b5 AC |
1578 | /* check if the pages are in Kernel Virtual Address layout */ |
1579 | if (isKernelVirtualAddress == true) | |
1580 | /* lock kernel buffer in the memory */ | |
ca605bb6 | 1581 | error = sep_lock_kernel_pages(sep, virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); |
0a18d7b5 AC |
1582 | else |
1583 | /* lock user buffer in the memory */ | |
ca605bb6 | 1584 | error = sep_lock_user_pages(sep, virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); |
cd1bb431 | 1585 | |
d19cf32f AC |
1586 | if (error) |
1587 | goto end_function; | |
cd1bb431 | 1588 | |
0a18d7b5 AC |
1589 | /* set the pointer to page array at the beginning of table - this table is |
1590 | now considered taken */ | |
1591 | *start_dma_table_ptr = lli_array_size; | |
cd1bb431 | 1592 | |
0a18d7b5 AC |
1593 | /* point to the place of the pages pointers of the table */ |
1594 | start_dma_table_ptr++; | |
cd1bb431 | 1595 | |
0a18d7b5 AC |
1596 | /* set the pages pointer */ |
1597 | *start_dma_table_ptr = (unsigned long) page_array_ptr; | |
1598 | ||
1599 | /* set the pointer to the first entry */ | |
1600 | flow_dma_table_entry_ptr = (struct sep_lli_entry_t *) (++start_dma_table_ptr); | |
1601 | ||
1602 | /* now create the entries for table */ | |
1603 | for (dma_table_data_count = entry_count = 0; entry_count < lli_array_size; entry_count++) { | |
1604 | flow_dma_table_entry_ptr->physical_address = lli_array[entry_count].physical_address; | |
1605 | ||
1606 | flow_dma_table_entry_ptr->block_size = lli_array[entry_count].block_size; | |
1607 | ||
1608 | /* set the total data of a table */ | |
1609 | dma_table_data_count += lli_array[entry_count].block_size; | |
1610 | ||
1611 | flow_dma_table_entry_ptr++; | |
d19cf32f | 1612 | } |
0a18d7b5 AC |
1613 | |
1614 | /* set the physical address */ | |
1615 | table_data->physical_address = virt_to_phys(start_dma_table_ptr); | |
1616 | ||
1617 | /* set the num_entries and total data size */ | |
1618 | table_data->block_size = ((lli_array_size + 1) << SEP_NUM_ENTRIES_OFFSET_IN_BITS) | (dma_table_data_count); | |
1619 | ||
1620 | /* set the info entry */ | |
1621 | flow_dma_table_entry_ptr->physical_address = 0xffffffff; | |
1622 | flow_dma_table_entry_ptr->block_size = 0; | |
1623 | ||
1624 | /* set the pointer to info entry */ | |
1625 | *info_entry_ptr = flow_dma_table_entry_ptr; | |
1626 | ||
1627 | /* the array of the lli entries */ | |
1628 | kfree(lli_array); | |
f93e4bf9 | 1629 | end_function: |
d19cf32f | 1630 | return error; |
cd1bb431 MA |
1631 | } |
1632 | ||
0a18d7b5 AC |
1633 | |
1634 | ||
cd1bb431 | 1635 | /* |
0a18d7b5 AC |
1636 | This function creates a list of tables for flow and returns the data for |
1637 | the first and last tables of the list | |
cd1bb431 | 1638 | */ |
ca605bb6 AC |
1639 | static int sep_prepare_flow_dma_tables(struct sep_device *sep, |
1640 | unsigned long num_virtual_buffers, | |
1641 | 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 | 1642 | { |
d19cf32f | 1643 | int error; |
0a18d7b5 AC |
1644 | unsigned long virt_buff_addr; |
1645 | unsigned long virt_buff_size; | |
1646 | struct sep_lli_entry_t table_data; | |
1647 | struct sep_lli_entry_t *info_entry_ptr; | |
1648 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
1649 | unsigned long i; | |
cd1bb431 | 1650 | |
0a18d7b5 AC |
1651 | /* init vars */ |
1652 | error = 0; | |
1653 | prev_info_entry_ptr = 0; | |
cd1bb431 | 1654 | |
0a18d7b5 AC |
1655 | /* init the first table to default */ |
1656 | table_data.physical_address = 0xffffffff; | |
1657 | first_table_data_ptr->physical_address = 0xffffffff; | |
1658 | table_data.block_size = 0; | |
cd1bb431 | 1659 | |
0a18d7b5 AC |
1660 | for (i = 0; i < num_virtual_buffers; i++) { |
1661 | /* get the virtual buffer address */ | |
1662 | error = get_user(virt_buff_addr, &first_buff_addr); | |
1663 | if (error) | |
1664 | goto end_function; | |
cd1bb431 | 1665 | |
0a18d7b5 AC |
1666 | /* get the virtual buffer size */ |
1667 | first_buff_addr++; | |
1668 | error = get_user(virt_buff_size, &first_buff_addr); | |
1669 | if (error) | |
1670 | goto end_function; | |
cd1bb431 | 1671 | |
0a18d7b5 AC |
1672 | /* advance the address to point to the next pair of address|size */ |
1673 | first_buff_addr++; | |
cd1bb431 | 1674 | |
0a18d7b5 | 1675 | /* now prepare the one flow LLI table from the data */ |
ca605bb6 | 1676 | 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 |
1677 | if (error) |
1678 | goto end_function; | |
1679 | ||
1680 | if (i == 0) { | |
1681 | /* if this is the first table - save it to return to the user | |
1682 | application */ | |
1683 | *first_table_data_ptr = table_data; | |
1684 | ||
1685 | /* set the pointer to info entry */ | |
1686 | prev_info_entry_ptr = info_entry_ptr; | |
1687 | } else { | |
1688 | /* not first table - the previous table info entry should | |
1689 | be updated */ | |
1690 | prev_info_entry_ptr->block_size = (0x1 << SEP_INT_FLAG_OFFSET_IN_BITS) | (table_data.block_size); | |
1691 | ||
1692 | /* set the pointer to info entry */ | |
1693 | prev_info_entry_ptr = info_entry_ptr; | |
1694 | } | |
d19cf32f | 1695 | } |
cd1bb431 | 1696 | |
0a18d7b5 AC |
1697 | /* set the last table data */ |
1698 | *last_table_data_ptr = table_data; | |
f93e4bf9 | 1699 | end_function: |
d19cf32f | 1700 | return error; |
cd1bb431 MA |
1701 | } |
1702 | ||
cd1bb431 | 1703 | /* |
0a18d7b5 AC |
1704 | this function goes over all the flow tables connected to the given |
1705 | table and deallocate them | |
cd1bb431 | 1706 | */ |
0a18d7b5 | 1707 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr) |
cd1bb431 | 1708 | { |
0a18d7b5 AC |
1709 | /* id pointer */ |
1710 | unsigned long *table_ptr; | |
1711 | /* end address of the flow dma area */ | |
1712 | unsigned long num_entries; | |
1713 | unsigned long num_pages; | |
1714 | struct page **pages_ptr; | |
1715 | /* maximum table size in words */ | |
1716 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1717 | |
0a18d7b5 AC |
1718 | /* set the pointer to the first table */ |
1719 | table_ptr = (unsigned long *) first_table_ptr->physical_address; | |
cd1bb431 | 1720 | |
0a18d7b5 AC |
1721 | /* set the num of entries */ |
1722 | num_entries = (first_table_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) | |
1723 | & SEP_NUM_ENTRIES_MASK; | |
cd1bb431 | 1724 | |
0a18d7b5 AC |
1725 | /* go over all the connected tables */ |
1726 | while (*table_ptr != 0xffffffff) { | |
1727 | /* get number of pages */ | |
1728 | num_pages = *(table_ptr - 2); | |
d19cf32f | 1729 | |
0a18d7b5 AC |
1730 | /* get the pointer to the pages */ |
1731 | pages_ptr = (struct page **) (*(table_ptr - 1)); | |
cd1bb431 | 1732 | |
0a18d7b5 AC |
1733 | /* free the pages */ |
1734 | sep_free_dma_pages(pages_ptr, num_pages, 1); | |
1735 | ||
1736 | /* goto to the info entry */ | |
1737 | info_entry_ptr = ((struct sep_lli_entry_t *) table_ptr) + (num_entries - 1); | |
1738 | ||
1739 | table_ptr = (unsigned long *) info_entry_ptr->physical_address; | |
1740 | num_entries = (info_entry_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1741 | } | |
1742 | ||
1743 | return; | |
cd1bb431 MA |
1744 | } |
1745 | ||
3cacf729 AC |
1746 | /** |
1747 | * sep_find_flow_context - find a flow | |
1748 | * @sep: the SEP we are working with | |
1749 | * @flow_id: flow identifier | |
1750 | * | |
1751 | * Returns a pointer the matching flow, or NULL if the flow does not | |
1752 | * exist. | |
1753 | */ | |
ca605bb6 | 1754 | |
3cacf729 AC |
1755 | static struct sep_flow_context_t *sep_find_flow_context(struct sep_device *sep, |
1756 | unsigned long flow_id) | |
cd1bb431 | 1757 | { |
3cacf729 | 1758 | int count; |
0a18d7b5 | 1759 | /* |
3cacf729 AC |
1760 | * always search for flow with id default first - in case we |
1761 | * already started working on the flow there can be no situation | |
1762 | * when 2 flows are with default flag | |
0a18d7b5 AC |
1763 | */ |
1764 | for (count = 0; count < SEP_DRIVER_NUM_FLOWS; count++) { | |
3cacf729 AC |
1765 | if (sep->flows[count].flow_id == flow_id) |
1766 | return &sep->flows[count]; | |
0a18d7b5 | 1767 | } |
3cacf729 | 1768 | return NULL; |
cd1bb431 MA |
1769 | } |
1770 | ||
0a18d7b5 | 1771 | |
cd1bb431 MA |
1772 | /* |
1773 | this function handles the request to create the DMA tables for flow | |
1774 | */ | |
ca605bb6 AC |
1775 | static int sep_create_flow_dma_tables_handler(struct sep_device *sep, |
1776 | unsigned long arg) | |
cd1bb431 | 1777 | { |
db376005 | 1778 | int error = -ENOENT; |
d19cf32f | 1779 | struct sep_driver_build_flow_table_t command_args; |
d19cf32f AC |
1780 | /* first table - output */ |
1781 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1782 | /* dma table data */ |
1783 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1784 | /* pointer to the info entry of the previuos DMA table */ |
1785 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
d19cf32f AC |
1786 | /* pointer to the flow data strucutre */ |
1787 | struct sep_flow_context_t *flow_context_ptr; | |
cd1bb431 | 1788 | |
d19cf32f | 1789 | dbg("SEP Driver:--------> sep_create_flow_dma_tables_handler start\n"); |
cd1bb431 | 1790 | |
d19cf32f AC |
1791 | /* init variables */ |
1792 | prev_info_entry_ptr = 0; | |
1793 | first_table_data.physical_address = 0xffffffff; | |
cd1bb431 | 1794 | |
d19cf32f | 1795 | /* find the free structure for flow data */ |
727acb4f | 1796 | error = -EINVAL; |
3cacf729 AC |
1797 | flow_context_ptr = sep_find_flow_context(sep, SEP_FREE_FLOW_ID); |
1798 | if (flow_context_ptr == NULL) | |
d19cf32f | 1799 | goto end_function; |
cd1bb431 | 1800 | |
d19cf32f AC |
1801 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_flow_table_t)); |
1802 | if (error) | |
1803 | goto end_function; | |
cd1bb431 | 1804 | |
d19cf32f | 1805 | /* create flow tables */ |
ca605bb6 | 1806 | 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 |
1807 | if (error) |
1808 | goto end_function_with_error; | |
cd1bb431 | 1809 | |
d19cf32f AC |
1810 | /* check if flow is static */ |
1811 | if (!command_args.flow_type) | |
1812 | /* point the info entry of the last to the info entry of the first */ | |
1813 | last_table_data = first_table_data; | |
cd1bb431 | 1814 | |
d19cf32f AC |
1815 | /* set output params */ |
1816 | command_args.first_table_addr = first_table_data.physical_address; | |
1817 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1818 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1819 | |
d19cf32f AC |
1820 | /* send the parameters to user application */ |
1821 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_build_flow_table_t)); | |
1822 | if (error) | |
1823 | goto end_function_with_error; | |
cd1bb431 | 1824 | |
d19cf32f AC |
1825 | /* all the flow created - update the flow entry with temp id */ |
1826 | flow_context_ptr->flow_id = SEP_TEMP_FLOW_ID; | |
cd1bb431 | 1827 | |
d19cf32f AC |
1828 | /* set the processing tables data in the context */ |
1829 | if (command_args.input_output_flag == SEP_DRIVER_IN_FLAG) | |
1830 | flow_context_ptr->input_tables_in_process = first_table_data; | |
1831 | else | |
1832 | flow_context_ptr->output_tables_in_process = first_table_data; | |
cd1bb431 | 1833 | |
d19cf32f | 1834 | goto end_function; |
cd1bb431 | 1835 | |
f93e4bf9 | 1836 | end_function_with_error: |
d19cf32f AC |
1837 | /* free the allocated tables */ |
1838 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1839 | end_function: |
d19cf32f | 1840 | dbg("SEP Driver:<-------- sep_create_flow_dma_tables_handler end\n"); |
d19cf32f | 1841 | return error; |
cd1bb431 MA |
1842 | } |
1843 | ||
1844 | /* | |
ca605bb6 | 1845 | this function handles add tables to flow |
cd1bb431 | 1846 | */ |
ca605bb6 | 1847 | static int sep_add_flow_tables_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1848 | { |
d19cf32f | 1849 | int error; |
d19cf32f | 1850 | unsigned long num_entries; |
d19cf32f | 1851 | struct sep_driver_add_flow_table_t command_args; |
d19cf32f | 1852 | struct sep_flow_context_t *flow_context_ptr; |
d19cf32f AC |
1853 | /* first dma table data */ |
1854 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1855 | /* last dma table data */ |
1856 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1857 | /* pointer to the info entry of the current DMA table */ |
1858 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1859 | |
d19cf32f | 1860 | dbg("SEP Driver:--------> sep_add_flow_tables_handler start\n"); |
cd1bb431 | 1861 | |
d19cf32f AC |
1862 | /* get input parameters */ |
1863 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_flow_table_t)); | |
1864 | if (error) | |
1865 | goto end_function; | |
cd1bb431 | 1866 | |
d19cf32f | 1867 | /* find the flow structure for the flow id */ |
3cacf729 AC |
1868 | flow_context_ptr = sep_find_flow_context(sep, command_args.flow_id); |
1869 | if (flow_context_ptr == NULL) | |
d19cf32f | 1870 | goto end_function; |
cd1bb431 | 1871 | |
d19cf32f | 1872 | /* prepare the flow dma tables */ |
ca605bb6 | 1873 | 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 |
1874 | if (error) |
1875 | goto end_function_with_error; | |
cd1bb431 | 1876 | |
d19cf32f AC |
1877 | /* now check if there is already an existing add table for this flow */ |
1878 | if (command_args.inputOutputFlag == SEP_DRIVER_IN_FLAG) { | |
1879 | /* this buffer was for input buffers */ | |
1880 | if (flow_context_ptr->input_tables_flag) { | |
1881 | /* add table already exists - add the new tables to the end | |
1882 | of the previous */ | |
1883 | num_entries = (flow_context_ptr->last_input_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1884 | ||
1885 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1886 | (flow_context_ptr->last_input_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1887 | ||
1888 | /* connect to list of tables */ | |
1889 | *info_entry_ptr = first_table_data; | |
1890 | ||
1891 | /* set the first table data */ | |
1892 | first_table_data = flow_context_ptr->first_input_table; | |
1893 | } else { | |
1894 | /* set the input flag */ | |
1895 | flow_context_ptr->input_tables_flag = 1; | |
1896 | ||
1897 | /* set the first table data */ | |
1898 | flow_context_ptr->first_input_table = first_table_data; | |
1899 | } | |
1900 | /* set the last table data */ | |
1901 | flow_context_ptr->last_input_table = last_table_data; | |
1902 | } else { /* this is output tables */ | |
1903 | ||
1904 | /* this buffer was for input buffers */ | |
1905 | if (flow_context_ptr->output_tables_flag) { | |
1906 | /* add table already exists - add the new tables to | |
1907 | the end of the previous */ | |
1908 | num_entries = (flow_context_ptr->last_output_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1909 | ||
1910 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1911 | (flow_context_ptr->last_output_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1912 | ||
1913 | /* connect to list of tables */ | |
1914 | *info_entry_ptr = first_table_data; | |
1915 | ||
1916 | /* set the first table data */ | |
1917 | first_table_data = flow_context_ptr->first_output_table; | |
1918 | } else { | |
1919 | /* set the input flag */ | |
1920 | flow_context_ptr->output_tables_flag = 1; | |
1921 | ||
1922 | /* set the first table data */ | |
1923 | flow_context_ptr->first_output_table = first_table_data; | |
1924 | } | |
1925 | /* set the last table data */ | |
1926 | flow_context_ptr->last_output_table = last_table_data; | |
cd1bb431 | 1927 | } |
cd1bb431 | 1928 | |
d19cf32f AC |
1929 | /* set output params */ |
1930 | command_args.first_table_addr = first_table_data.physical_address; | |
1931 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1932 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1933 | |
d19cf32f AC |
1934 | /* send the parameters to user application */ |
1935 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_add_flow_table_t)); | |
f93e4bf9 | 1936 | end_function_with_error: |
d19cf32f AC |
1937 | /* free the allocated tables */ |
1938 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1939 | end_function: |
d19cf32f | 1940 | dbg("SEP Driver:<-------- sep_add_flow_tables_handler end\n"); |
d19cf32f | 1941 | return error; |
cd1bb431 MA |
1942 | } |
1943 | ||
1944 | /* | |
1945 | this function add the flow add message to the specific flow | |
1946 | */ | |
ca605bb6 | 1947 | static int sep_add_flow_tables_message_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1948 | { |
d19cf32f | 1949 | int error; |
d19cf32f | 1950 | struct sep_driver_add_message_t command_args; |
d19cf32f | 1951 | struct sep_flow_context_t *flow_context_ptr; |
cd1bb431 | 1952 | |
d19cf32f | 1953 | dbg("SEP Driver:--------> sep_add_flow_tables_message_handler start\n"); |
cd1bb431 | 1954 | |
d19cf32f AC |
1955 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_message_t)); |
1956 | if (error) | |
1957 | goto end_function; | |
cd1bb431 | 1958 | |
d19cf32f AC |
1959 | /* check input */ |
1960 | if (command_args.message_size_in_bytes > SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES) { | |
1961 | error = -ENOMEM; | |
1962 | goto end_function; | |
1963 | } | |
cd1bb431 | 1964 | |
d19cf32f | 1965 | /* find the flow context */ |
3cacf729 AC |
1966 | flow_context_ptr = sep_find_flow_context(sep, command_args.flow_id); |
1967 | if (flow_context_ptr == NULL) | |
d19cf32f | 1968 | goto end_function; |
cd1bb431 | 1969 | |
d19cf32f AC |
1970 | /* copy the message into context */ |
1971 | flow_context_ptr->message_size_in_bytes = command_args.message_size_in_bytes; | |
d19cf32f | 1972 | error = copy_from_user(flow_context_ptr->message, (void *) command_args.message_address, command_args.message_size_in_bytes); |
f93e4bf9 | 1973 | end_function: |
d19cf32f | 1974 | dbg("SEP Driver:<-------- sep_add_flow_tables_message_handler end\n"); |
d19cf32f | 1975 | return error; |
cd1bb431 MA |
1976 | } |
1977 | ||
1978 | ||
1979 | /* | |
51faa9d2 | 1980 | this function returns the bus and virtual addresses of the static pool |
cd1bb431 | 1981 | */ |
ca605bb6 | 1982 | static int sep_get_static_pool_addr_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1983 | { |
d19cf32f | 1984 | int error; |
d19cf32f | 1985 | struct sep_driver_static_pool_addr_t command_args; |
cd1bb431 | 1986 | |
d19cf32f | 1987 | dbg("SEP Driver:--------> sep_get_static_pool_addr_handler start\n"); |
cd1bb431 | 1988 | |
d19cf32f | 1989 | /*prepare the output parameters in the struct */ |
70ae04e6 AC |
1990 | command_args.physical_static_address = sep->shared_bus + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; |
1991 | command_args.virtual_static_address = (unsigned long)sep->shared_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 1992 | |
51faa9d2 | 1993 | edbg("SEP Driver:bus_static_address is %08lx, virtual_static_address %08lx\n", command_args.physical_static_address, command_args.virtual_static_address); |
cd1bb431 | 1994 | |
d19cf32f AC |
1995 | /* send the parameters to user application */ |
1996 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_static_pool_addr_t)); | |
d19cf32f | 1997 | dbg("SEP Driver:<-------- sep_get_static_pool_addr_handler end\n"); |
d19cf32f | 1998 | return error; |
cd1bb431 MA |
1999 | } |
2000 | ||
2001 | /* | |
2002 | this address gets the offset of the physical address from the start | |
2003 | of the mapped area | |
2004 | */ | |
ca605bb6 | 2005 | static int sep_get_physical_mapped_offset_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2006 | { |
d19cf32f | 2007 | int error; |
d19cf32f | 2008 | struct sep_driver_get_mapped_offset_t command_args; |
cd1bb431 | 2009 | |
d19cf32f | 2010 | dbg("SEP Driver:--------> sep_get_physical_mapped_offset_handler start\n"); |
cd1bb431 | 2011 | |
d19cf32f AC |
2012 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_get_mapped_offset_t)); |
2013 | if (error) | |
2014 | goto end_function; | |
cd1bb431 | 2015 | |
70ae04e6 | 2016 | if (command_args.physical_address < sep->shared_bus) { |
51faa9d2 | 2017 | error = -EINVAL; |
d19cf32f AC |
2018 | goto end_function; |
2019 | } | |
cd1bb431 | 2020 | |
d19cf32f | 2021 | /*prepare the output parameters in the struct */ |
70ae04e6 | 2022 | command_args.offset = command_args.physical_address - sep->shared_bus; |
cd1bb431 | 2023 | |
51faa9d2 | 2024 | edbg("SEP Driver:bus_address is %08lx, offset is %lu\n", command_args.physical_address, command_args.offset); |
cd1bb431 | 2025 | |
d19cf32f AC |
2026 | /* send the parameters to user application */ |
2027 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_get_mapped_offset_t)); | |
f93e4bf9 | 2028 | end_function: |
d19cf32f | 2029 | dbg("SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n"); |
d19cf32f | 2030 | return error; |
cd1bb431 MA |
2031 | } |
2032 | ||
2033 | ||
2034 | /* | |
2035 | ? | |
2036 | */ | |
ca605bb6 | 2037 | static int sep_start_handler(struct sep_device *sep) |
cd1bb431 | 2038 | { |
d19cf32f | 2039 | unsigned long reg_val; |
f93e4bf9 | 2040 | unsigned long error = 0; |
cd1bb431 | 2041 | |
d19cf32f | 2042 | dbg("SEP Driver:--------> sep_start_handler start\n"); |
cd1bb431 | 2043 | |
d19cf32f | 2044 | /* wait in polling for message from SEP */ |
f93e4bf9 | 2045 | do |
ca605bb6 | 2046 | reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2047 | while (!reg_val); |
cd1bb431 | 2048 | |
d19cf32f | 2049 | /* check the value */ |
43e8c4a3 | 2050 | if (reg_val == 0x1) |
ca605bb6 AC |
2051 | /* fatal error - read error status from GPRO */ |
2052 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
d19cf32f | 2053 | dbg("SEP Driver:<-------- sep_start_handler end\n"); |
d19cf32f | 2054 | return error; |
cd1bb431 MA |
2055 | } |
2056 | ||
2057 | /* | |
2058 | this function handles the request for SEP initialization | |
2059 | */ | |
ca605bb6 | 2060 | static int sep_init_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2061 | { |
d19cf32f | 2062 | unsigned long message_word; |
d19cf32f | 2063 | unsigned long *message_ptr; |
d19cf32f | 2064 | struct sep_driver_init_t command_args; |
d19cf32f | 2065 | unsigned long counter; |
d19cf32f | 2066 | unsigned long error; |
d19cf32f | 2067 | unsigned long reg_val; |
cd1bb431 | 2068 | |
d19cf32f | 2069 | dbg("SEP Driver:--------> sep_init_handler start\n"); |
d19cf32f | 2070 | error = 0; |
cd1bb431 | 2071 | |
d19cf32f | 2072 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_init_t)); |
cd1bb431 | 2073 | |
d19cf32f | 2074 | dbg("SEP Driver:--------> sep_init_handler - finished copy_from_user \n"); |
cd1bb431 | 2075 | |
d19cf32f AC |
2076 | if (error) |
2077 | goto end_function; | |
cd1bb431 | 2078 | |
d19cf32f AC |
2079 | /* PATCH - configure the DMA to single -burst instead of multi-burst */ |
2080 | /*sep_configure_dma_burst(); */ | |
cd1bb431 | 2081 | |
d19cf32f | 2082 | dbg("SEP Driver:--------> sep_init_handler - finished sep_configure_dma_burst \n"); |
cd1bb431 | 2083 | |
d19cf32f | 2084 | message_ptr = (unsigned long *) command_args.message_addr; |
cd1bb431 | 2085 | |
d19cf32f | 2086 | /* set the base address of the SRAM */ |
ca605bb6 | 2087 | sep_write_reg(sep, HW_SRAM_ADDR_REG_ADDR, HW_CC_SRAM_BASE_ADDRESS); |
cd1bb431 | 2088 | |
d19cf32f AC |
2089 | for (counter = 0; counter < command_args.message_size_in_words; counter++, message_ptr++) { |
2090 | get_user(message_word, message_ptr); | |
d19cf32f | 2091 | /* write data to SRAM */ |
ca605bb6 | 2092 | sep_write_reg(sep, HW_SRAM_DATA_REG_ADDR, message_word); |
d19cf32f | 2093 | edbg("SEP Driver:message_word is %lu\n", message_word); |
cd1bb431 | 2094 | /* wait for write complete */ |
ca605bb6 | 2095 | sep_wait_sram_write(sep); |
d19cf32f | 2096 | } |
d19cf32f | 2097 | dbg("SEP Driver:--------> sep_init_handler - finished getting messages from user space\n"); |
d19cf32f | 2098 | /* signal SEP */ |
ca605bb6 | 2099 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1); |
cd1bb431 | 2100 | |
f93e4bf9 | 2101 | do |
ca605bb6 | 2102 | reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2103 | while (!(reg_val & 0xFFFFFFFD)); |
cd1bb431 | 2104 | |
d19cf32f | 2105 | dbg("SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n"); |
cd1bb431 | 2106 | |
d19cf32f AC |
2107 | /* check the value */ |
2108 | if (reg_val == 0x1) { | |
2109 | edbg("SEP Driver:init failed\n"); | |
cd1bb431 | 2110 | |
ca605bb6 | 2111 | error = sep_read_reg(sep, 0x8060); |
d19cf32f | 2112 | edbg("SEP Driver:sw monitor is %lu\n", error); |
cd1bb431 | 2113 | |
d19cf32f | 2114 | /* fatal error - read erro status from GPRO */ |
ca605bb6 | 2115 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); |
d19cf32f | 2116 | edbg("SEP Driver:error is %lu\n", error); |
d19cf32f | 2117 | } |
f93e4bf9 | 2118 | end_function: |
d19cf32f | 2119 | dbg("SEP Driver:<-------- sep_init_handler end\n"); |
d19cf32f | 2120 | return error; |
cd1bb431 MA |
2121 | |
2122 | } | |
2123 | ||
2124 | /* | |
2125 | this function handles the request cache and resident reallocation | |
2126 | */ | |
ca605bb6 AC |
2127 | static int sep_realloc_cache_resident_handler(struct sep_device *sep, |
2128 | unsigned long arg) | |
cd1bb431 | 2129 | { |
d19cf32f | 2130 | struct sep_driver_realloc_cache_resident_t command_args; |
6f13ea3d | 2131 | int error; |
cd1bb431 | 2132 | |
d19cf32f | 2133 | /* copy cache and resident to the their intended locations */ |
6f13ea3d | 2134 | error = sep_load_firmware(sep); |
d19cf32f | 2135 | if (error) |
6f13ea3d | 2136 | return error; |
cd1bb431 | 2137 | |
70ae04e6 | 2138 | command_args.new_base_addr = sep->shared_bus; |
cd1bb431 | 2139 | |
d19cf32f AC |
2140 | /* find the new base address according to the lowest address between |
2141 | cache, resident and shared area */ | |
6f13ea3d AC |
2142 | if (sep->resident_bus < command_args.new_base_addr) |
2143 | command_args.new_base_addr = sep->resident_bus; | |
70ae04e6 AC |
2144 | if (sep->rar_bus < command_args.new_base_addr) |
2145 | command_args.new_base_addr = sep->rar_bus; | |
cd1bb431 | 2146 | |
d19cf32f | 2147 | /* set the return parameters */ |
70ae04e6 | 2148 | command_args.new_cache_addr = sep->rar_bus; |
6f13ea3d | 2149 | command_args.new_resident_addr = sep->resident_bus; |
cd1bb431 | 2150 | |
d19cf32f | 2151 | /* set the new shared area */ |
70ae04e6 | 2152 | command_args.new_shared_area_addr = sep->shared_bus; |
cd1bb431 | 2153 | |
70ae04e6 | 2154 | edbg("SEP Driver:command_args.new_shared_addr is %08llx\n", command_args.new_shared_area_addr); |
6f13ea3d AC |
2155 | edbg("SEP Driver:command_args.new_base_addr is %08llx\n", command_args.new_base_addr); |
2156 | edbg("SEP Driver:command_args.new_resident_addr is %08llx\n", command_args.new_resident_addr); | |
70ae04e6 | 2157 | edbg("SEP Driver:command_args.new_rar_addr is %08llx\n", command_args.new_cache_addr); |
cd1bb431 | 2158 | |
d19cf32f | 2159 | /* return to user */ |
6f13ea3d AC |
2160 | if (copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_realloc_cache_resident_t))) |
2161 | return -EFAULT; | |
2162 | return 0; | |
cd1bb431 MA |
2163 | } |
2164 | ||
cfd498be AC |
2165 | /** |
2166 | * sep_get_time_handler - time request from user space | |
2167 | * @sep: sep we are to set the time for | |
2168 | * @arg: pointer to user space arg buffer | |
2169 | * | |
2170 | * This function reports back the time and the address in the SEP | |
2171 | * shared buffer at which it has been placed. (Do we really need this!!!) | |
2172 | */ | |
2173 | ||
ca605bb6 | 2174 | static int sep_get_time_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2175 | { |
d19cf32f | 2176 | struct sep_driver_get_time_t command_args; |
cd1bb431 | 2177 | |
cfd498be | 2178 | mutex_lock(&sep_mutex); |
a4e80a1b AC |
2179 | command_args.time_value = sep_set_time(sep); |
2180 | command_args.time_physical_address = (unsigned long)sep_time_address(sep); | |
cfd498be AC |
2181 | mutex_unlock(&sep_mutex); |
2182 | if (copy_to_user((void __user *)arg, | |
2183 | &command_args, sizeof(struct sep_driver_get_time_t))) | |
2184 | return -EFAULT; | |
2185 | return 0; | |
cd1bb431 MA |
2186 | |
2187 | } | |
2188 | ||
cd1bb431 | 2189 | /* |
0a18d7b5 | 2190 | This API handles the end transaction request |
cd1bb431 | 2191 | */ |
ca605bb6 | 2192 | static int sep_end_transaction_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2193 | { |
0a18d7b5 | 2194 | dbg("SEP Driver:--------> sep_end_transaction_handler start\n"); |
cd1bb431 | 2195 | |
0a18d7b5 AC |
2196 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
2197 | /* close IMR */ | |
ca605bb6 | 2198 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, 0x7FFF); |
cd1bb431 | 2199 | |
0a18d7b5 | 2200 | /* release IRQ line */ |
ca605bb6 | 2201 | free_irq(SEP_DIRVER_IRQ_NUM, sep); |
cd1bb431 | 2202 | |
0a18d7b5 AC |
2203 | /* lock the sep mutex */ |
2204 | mutex_unlock(&sep_mutex); | |
2205 | #endif | |
cd1bb431 | 2206 | |
0a18d7b5 | 2207 | dbg("SEP Driver:<-------- sep_end_transaction_handler end\n"); |
cd1bb431 | 2208 | |
0a18d7b5 | 2209 | return 0; |
cd1bb431 MA |
2210 | } |
2211 | ||
0a18d7b5 | 2212 | |
6f9e0f60 AC |
2213 | /** |
2214 | * sep_set_flow_id_handler - handle flow setting | |
2215 | * @sep: the SEP we are configuring | |
2216 | * @flow_id: the flow we are setting | |
2217 | * | |
2218 | * This function handler the set flow id command | |
2219 | */ | |
2220 | static int sep_set_flow_id_handler(struct sep_device *sep, | |
2221 | unsigned long flow_id) | |
cd1bb431 | 2222 | { |
6f9e0f60 | 2223 | int error = 0; |
d19cf32f | 2224 | struct sep_flow_context_t *flow_data_ptr; |
cd1bb431 | 2225 | |
d19cf32f AC |
2226 | /* find the flow data structure that was just used for creating new flow |
2227 | - its id should be default */ | |
cd1bb431 | 2228 | |
6f9e0f60 AC |
2229 | mutex_lock(&sep_mutex); |
2230 | flow_data_ptr = sep_find_flow_context(sep, SEP_TEMP_FLOW_ID); | |
2231 | if (flow_data_ptr) | |
2232 | flow_data_ptr->flow_id = flow_id; /* set flow id */ | |
2233 | else | |
2234 | error = -EINVAL; | |
2235 | mutex_unlock(&sep_mutex); | |
d19cf32f | 2236 | return error; |
cd1bb431 MA |
2237 | } |
2238 | ||
74e1cd45 | 2239 | static long sep_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
0a18d7b5 AC |
2240 | { |
2241 | int error = 0; | |
ca605bb6 | 2242 | struct sep_device *sep = filp->private_data; |
0a18d7b5 AC |
2243 | |
2244 | dbg("------------>SEP Driver: ioctl start\n"); | |
2245 | ||
2246 | edbg("SEP Driver: cmd is %x\n", cmd); | |
2247 | ||
0a18d7b5 AC |
2248 | switch (cmd) { |
2249 | case SEP_IOCSENDSEPCOMMAND: | |
2250 | /* send command to SEP */ | |
ca605bb6 | 2251 | sep_send_command_handler(sep); |
0a18d7b5 AC |
2252 | edbg("SEP Driver: after sep_send_command_handler\n"); |
2253 | break; | |
2254 | case SEP_IOCSENDSEPRPLYCOMMAND: | |
2255 | /* send reply command to SEP */ | |
ca605bb6 | 2256 | sep_send_reply_command_handler(sep); |
0a18d7b5 AC |
2257 | break; |
2258 | case SEP_IOCALLOCDATAPOLL: | |
2259 | /* allocate data pool */ | |
ca605bb6 | 2260 | error = sep_allocate_data_pool_memory_handler(sep, arg); |
0a18d7b5 AC |
2261 | break; |
2262 | case SEP_IOCWRITEDATAPOLL: | |
2263 | /* write data into memory pool */ | |
ca605bb6 | 2264 | error = sep_write_into_data_pool_handler(sep, arg); |
0a18d7b5 AC |
2265 | break; |
2266 | case SEP_IOCREADDATAPOLL: | |
2267 | /* read data from data pool into application memory */ | |
ca605bb6 | 2268 | error = sep_read_from_data_pool_handler(sep, arg); |
0a18d7b5 AC |
2269 | break; |
2270 | case SEP_IOCCREATESYMDMATABLE: | |
2271 | /* create dma table for synhronic operation */ | |
ca605bb6 | 2272 | error = sep_create_sync_dma_tables_handler(sep, arg); |
0a18d7b5 AC |
2273 | break; |
2274 | case SEP_IOCCREATEFLOWDMATABLE: | |
2275 | /* create flow dma tables */ | |
ca605bb6 | 2276 | error = sep_create_flow_dma_tables_handler(sep, arg); |
0a18d7b5 AC |
2277 | break; |
2278 | case SEP_IOCFREEDMATABLEDATA: | |
2279 | /* free the pages */ | |
ca605bb6 | 2280 | error = sep_free_dma_table_data_handler(sep); |
0a18d7b5 AC |
2281 | break; |
2282 | case SEP_IOCSETFLOWID: | |
2283 | /* set flow id */ | |
6f9e0f60 | 2284 | error = sep_set_flow_id_handler(sep, (unsigned long)arg); |
0a18d7b5 AC |
2285 | break; |
2286 | case SEP_IOCADDFLOWTABLE: | |
2287 | /* add tables to the dynamic flow */ | |
ca605bb6 | 2288 | error = sep_add_flow_tables_handler(sep, arg); |
0a18d7b5 AC |
2289 | break; |
2290 | case SEP_IOCADDFLOWMESSAGE: | |
2291 | /* add message of add tables to flow */ | |
ca605bb6 | 2292 | error = sep_add_flow_tables_message_handler(sep, arg); |
0a18d7b5 AC |
2293 | break; |
2294 | case SEP_IOCSEPSTART: | |
2295 | /* start command to sep */ | |
ca605bb6 | 2296 | error = sep_start_handler(sep); |
0a18d7b5 AC |
2297 | break; |
2298 | case SEP_IOCSEPINIT: | |
2299 | /* init command to sep */ | |
ca605bb6 | 2300 | error = sep_init_handler(sep, arg); |
0a18d7b5 | 2301 | break; |
0a18d7b5 AC |
2302 | case SEP_IOCGETSTATICPOOLADDR: |
2303 | /* get the physical and virtual addresses of the static pool */ | |
ca605bb6 | 2304 | error = sep_get_static_pool_addr_handler(sep, arg); |
0a18d7b5 AC |
2305 | break; |
2306 | case SEP_IOCENDTRANSACTION: | |
ca605bb6 | 2307 | error = sep_end_transaction_handler(sep, arg); |
0a18d7b5 AC |
2308 | break; |
2309 | case SEP_IOCREALLOCCACHERES: | |
ca605bb6 | 2310 | error = sep_realloc_cache_resident_handler(sep, arg); |
0a18d7b5 AC |
2311 | break; |
2312 | case SEP_IOCGETMAPPEDADDROFFSET: | |
ca605bb6 | 2313 | error = sep_get_physical_mapped_offset_handler(sep, arg); |
0a18d7b5 AC |
2314 | break; |
2315 | case SEP_IOCGETIME: | |
ca605bb6 | 2316 | error = sep_get_time_handler(sep, arg); |
0a18d7b5 AC |
2317 | break; |
2318 | default: | |
2319 | error = -ENOTTY; | |
2320 | break; | |
2321 | } | |
2322 | dbg("SEP Driver:<-------- ioctl end\n"); | |
2323 | return error; | |
2324 | } | |
2325 | ||
2326 | ||
2327 | ||
2328 | #if !SEP_DRIVER_POLLING_MODE | |
2329 | ||
2330 | /* handler for flow done interrupt */ | |
2331 | ||
2332 | static void sep_flow_done_handler(struct work_struct *work) | |
2333 | { | |
2334 | struct sep_flow_context_t *flow_data_ptr; | |
2335 | ||
2336 | /* obtain the mutex */ | |
2337 | mutex_lock(&sep_mutex); | |
2338 | ||
2339 | /* get the pointer to context */ | |
2340 | flow_data_ptr = (struct sep_flow_context_t *) work; | |
2341 | ||
2342 | /* free all the current input tables in sep */ | |
2343 | sep_deallocated_flow_tables(&flow_data_ptr->input_tables_in_process); | |
2344 | ||
2345 | /* free all the current tables output tables in SEP (if needed) */ | |
2346 | if (flow_data_ptr->output_tables_in_process.physical_address != 0xffffffff) | |
2347 | sep_deallocated_flow_tables(&flow_data_ptr->output_tables_in_process); | |
2348 | ||
2349 | /* check if we have additional tables to be sent to SEP only input | |
2350 | flag may be checked */ | |
2351 | if (flow_data_ptr->input_tables_flag) { | |
2352 | /* copy the message to the shared RAM and signal SEP */ | |
70ae04e6 | 2353 | memcpy((void *) flow_data_ptr->message, (void *) sep->shared_addr, flow_data_ptr->message_size_in_bytes); |
0a18d7b5 | 2354 | |
ca605bb6 | 2355 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR, 0x2); |
0a18d7b5 AC |
2356 | } |
2357 | mutex_unlock(&sep_mutex); | |
2358 | } | |
cd1bb431 | 2359 | /* |
0a18d7b5 | 2360 | interrupt handler function |
cd1bb431 | 2361 | */ |
0a18d7b5 | 2362 | static irqreturn_t sep_inthandler(int irq, void *dev_id) |
cd1bb431 | 2363 | { |
0a18d7b5 | 2364 | irqreturn_t int_error; |
0a18d7b5 AC |
2365 | unsigned long reg_val; |
2366 | unsigned long flow_id; | |
2367 | struct sep_flow_context_t *flow_context_ptr; | |
ca605bb6 | 2368 | struct sep_device *sep = dev_id; |
cd1bb431 | 2369 | |
0a18d7b5 | 2370 | int_error = IRQ_HANDLED; |
cd1bb431 | 2371 | |
0a18d7b5 | 2372 | /* read the IRR register to check if this is SEP interrupt */ |
ca605bb6 | 2373 | reg_val = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR); |
0a18d7b5 | 2374 | edbg("SEP Interrupt - reg is %08lx\n", reg_val); |
cd1bb431 | 2375 | |
0a18d7b5 AC |
2376 | /* check if this is the flow interrupt */ |
2377 | if (0 /*reg_val & (0x1 << 11) */ ) { | |
2378 | /* read GPRO to find out the which flow is done */ | |
ca605bb6 | 2379 | flow_id = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR); |
cd1bb431 | 2380 | |
0a18d7b5 | 2381 | /* find the contex of the flow */ |
3cacf729 AC |
2382 | flow_context_ptr = sep_find_flow_context(sep, flow_id >> 28); |
2383 | if (flow_context_ptr == NULL) | |
0a18d7b5 | 2384 | goto end_function_with_error; |
cd1bb431 | 2385 | |
0a18d7b5 | 2386 | /* queue the work */ |
3cacf729 | 2387 | INIT_WORK(&flow_context_ptr->flow_wq, sep_flow_done_handler); |
ca605bb6 | 2388 | queue_work(sep->flow_wq, &flow_context_ptr->flow_wq); |
0a18d7b5 AC |
2389 | |
2390 | } else { | |
2391 | /* check if this is reply interrupt from SEP */ | |
2392 | if (reg_val & (0x1 << 13)) { | |
2393 | /* update the counter of reply messages */ | |
ca605bb6 | 2394 | sep->reply_ct++; |
0a18d7b5 | 2395 | /* wake up the waiting process */ |
904290c0 | 2396 | wake_up(&sep_event); |
0a18d7b5 AC |
2397 | } else { |
2398 | int_error = IRQ_NONE; | |
2399 | goto end_function; | |
2400 | } | |
2401 | } | |
2402 | end_function_with_error: | |
2403 | /* clear the interrupt */ | |
ca605bb6 | 2404 | sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, reg_val); |
0a18d7b5 AC |
2405 | end_function: |
2406 | return int_error; | |
2407 | } | |
2408 | ||
2409 | #endif | |
cd1bb431 | 2410 | |
cd1bb431 | 2411 | |
cd1bb431 | 2412 | |
8c7ff81a | 2413 | #if 0 |
cd1bb431 | 2414 | |
ca605bb6 | 2415 | static void sep_wait_busy(struct sep_device *sep) |
794f1d78 AC |
2416 | { |
2417 | u32 reg; | |
2418 | ||
2419 | do { | |
ca605bb6 | 2420 | reg = sep_read_reg(sep, HW_HOST_SEP_BUSY_REG_ADDR); |
794f1d78 AC |
2421 | } while (reg); |
2422 | } | |
2423 | ||
cd1bb431 MA |
2424 | /* |
2425 | PATCH for configuring the DMA to single burst instead of multi-burst | |
2426 | */ | |
ca605bb6 | 2427 | static void sep_configure_dma_burst(struct sep_device *sep) |
cd1bb431 | 2428 | { |
cd1bb431 MA |
2429 | #define HW_AHB_RD_WR_BURSTS_REG_ADDR 0x0E10UL |
2430 | ||
d19cf32f | 2431 | dbg("SEP Driver:<-------- sep_configure_dma_burst start \n"); |
cd1bb431 | 2432 | |
d19cf32f | 2433 | /* request access to registers from SEP */ |
ca605bb6 | 2434 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); |
cd1bb431 | 2435 | |
d19cf32f | 2436 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n"); |
cd1bb431 | 2437 | |
ca605bb6 | 2438 | sep_wait_busy(sep); |
cd1bb431 | 2439 | |
d19cf32f | 2440 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (while(revVal) wait loop) \n"); |
cd1bb431 | 2441 | |
d19cf32f | 2442 | /* set the DMA burst register to single burst */ |
ca605bb6 | 2443 | sep_write_reg(sep, HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL); |
cd1bb431 | 2444 | |
d19cf32f | 2445 | /* release the sep busy */ |
ca605bb6 AC |
2446 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL); |
2447 | sep_wait_busy(sep); | |
cd1bb431 | 2448 | |
d19cf32f | 2449 | dbg("SEP Driver:<-------- sep_configure_dma_burst done \n"); |
cd1bb431 MA |
2450 | |
2451 | } | |
2452 | ||
8c7ff81a AC |
2453 | #endif |
2454 | ||
0097a69d | 2455 | /* |
bbc9a991 | 2456 | Function that is activated on the successful probe of the SEP device |
0097a69d AC |
2457 | */ |
2458 | static int __devinit sep_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2459 | { | |
2460 | int error = 0; | |
ca605bb6 AC |
2461 | struct sep_device *sep; |
2462 | int counter; | |
2463 | int size; /* size of memory for allocation */ | |
0097a69d AC |
2464 | |
2465 | edbg("Sep pci probe starting\n"); | |
ca605bb6 AC |
2466 | if (sep_dev != NULL) { |
2467 | dev_warn(&pdev->dev, "only one SEP supported.\n"); | |
2468 | return -EBUSY; | |
2469 | } | |
0097a69d AC |
2470 | |
2471 | /* enable the device */ | |
2472 | error = pci_enable_device(pdev); | |
2473 | if (error) { | |
2474 | edbg("error enabling pci device\n"); | |
2475 | goto end_function; | |
2476 | } | |
2477 | ||
2478 | /* set the pci dev pointer */ | |
ca605bb6 AC |
2479 | sep_dev = &sep_instance; |
2480 | sep = &sep_instance; | |
2481 | ||
70ae04e6 | 2482 | edbg("sep->shared_addr = %p\n", sep->shared_addr); |
ca605bb6 AC |
2483 | /* transaction counter that coordinates the transactions between SEP |
2484 | and HOST */ | |
2485 | sep->send_ct = 0; | |
2486 | /* counter for the messages from sep */ | |
2487 | sep->reply_ct = 0; | |
2488 | /* counter for the number of bytes allocated in the pool | |
2489 | for the current transaction */ | |
2490 | sep->data_pool_bytes_allocated = 0; | |
2491 | ||
2492 | /* calculate the total size for allocation */ | |
2493 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2494 | 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; | |
2495 | ||
2496 | /* allocate the shared area */ | |
8c7ff81a | 2497 | if (sep_map_and_alloc_shared_area(sep, size)) { |
ca605bb6 AC |
2498 | error = -ENOMEM; |
2499 | /* allocation failed */ | |
2500 | goto end_function_error; | |
2501 | } | |
2502 | /* now set the memory regions */ | |
ca605bb6 | 2503 | #if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1) |
663d8bb0 AC |
2504 | /* Note: this test section will need moving before it could ever |
2505 | work as the registers are not yet mapped ! */ | |
ca605bb6 | 2506 | /* send the new SHARED MESSAGE AREA to the SEP */ |
70ae04e6 | 2507 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep->shared_bus); |
ca605bb6 AC |
2508 | |
2509 | /* poll for SEP response */ | |
51faa9d2 | 2510 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); |
70ae04e6 | 2511 | while (retval != 0xffffffff && retval != sep->shared_bus) |
51faa9d2 | 2512 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); |
ca605bb6 AC |
2513 | |
2514 | /* check the return value (register) */ | |
70ae04e6 | 2515 | if (retval != sep->shared_bus) { |
ca605bb6 AC |
2516 | error = -ENOMEM; |
2517 | goto end_function_deallocate_sep_shared_area; | |
2518 | } | |
2519 | #endif | |
2520 | /* init the flow contextes */ | |
2521 | for (counter = 0; counter < SEP_DRIVER_NUM_FLOWS; counter++) | |
2522 | sep->flows[counter].flow_id = SEP_FREE_FLOW_ID; | |
2523 | ||
2524 | sep->flow_wq = create_singlethread_workqueue("sepflowwq"); | |
2525 | if (sep->flow_wq == NULL) { | |
2526 | error = -ENOMEM; | |
2527 | edbg("sep_driver:flow queue creation failed\n"); | |
2528 | goto end_function_deallocate_sep_shared_area; | |
2529 | } | |
2530 | edbg("SEP Driver: create flow workqueue \n"); | |
ca605bb6 | 2531 | sep->pdev = pci_dev_get(pdev); |
0097a69d | 2532 | |
663d8bb0 | 2533 | sep->reg_addr = pci_ioremap_bar(pdev, 0); |
70ae04e6 | 2534 | if (!sep->reg_addr) { |
663d8bb0 | 2535 | edbg("sep: ioremap of registers failed.\n"); |
ca605bb6 | 2536 | goto end_function_deallocate_sep_shared_area; |
0097a69d | 2537 | } |
663d8bb0 | 2538 | edbg("SEP Driver:reg_addr is %p\n", sep->reg_addr); |
0097a69d | 2539 | |
663d8bb0 AC |
2540 | /* load the rom code */ |
2541 | sep_load_rom_code(sep); | |
0097a69d AC |
2542 | |
2543 | /* set up system base address and shared memory location */ | |
6f13ea3d AC |
2544 | sep->rar_addr = dma_alloc_coherent(&sep->pdev->dev, |
2545 | 2 * SEP_RAR_IO_MEM_REGION_SIZE, | |
2546 | &sep->rar_bus, GFP_KERNEL); | |
0097a69d | 2547 | |
ca605bb6 | 2548 | if (!sep->rar_addr) { |
6f13ea3d | 2549 | edbg("SEP Driver:can't allocate rar\n"); |
ca605bb6 | 2550 | goto end_function_uniomap; |
0097a69d | 2551 | } |
0097a69d | 2552 | |
663d8bb0 | 2553 | |
51faa9d2 | 2554 | edbg("SEP Driver:rar_bus is %08llx\n", (unsigned long long)sep->rar_bus); |
ca605bb6 | 2555 | edbg("SEP Driver:rar_virtual is %p\n", sep->rar_addr); |
0097a69d AC |
2556 | |
2557 | #if !SEP_DRIVER_POLLING_MODE | |
2558 | ||
2559 | edbg("SEP Driver: about to write IMR and ICR REG_ADDR\n"); | |
2560 | ||
2561 | /* clear ICR register */ | |
ca605bb6 | 2562 | sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF); |
0097a69d AC |
2563 | |
2564 | /* set the IMR register - open only GPR 2 */ | |
ca605bb6 | 2565 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); |
0097a69d | 2566 | |
0097a69d AC |
2567 | edbg("SEP Driver: about to call request_irq\n"); |
2568 | /* get the interrupt line */ | |
ca605bb6 | 2569 | error = request_irq(pdev->irq, sep_inthandler, IRQF_SHARED, "sep_driver", sep); |
0097a69d | 2570 | if (error) |
ca605bb6 | 2571 | goto end_function_free_res; |
663d8bb0 | 2572 | return 0; |
0097a69d AC |
2573 | edbg("SEP Driver: about to write IMR REG_ADDR"); |
2574 | ||
2575 | /* set the IMR register - open only GPR 2 */ | |
ca605bb6 | 2576 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); |
0097a69d | 2577 | |
ca605bb6 | 2578 | end_function_free_res: |
6f13ea3d AC |
2579 | dma_free_coherent(&sep->pdev->dev, 2 * SEP_RAR_IO_MEM_REGION_SIZE, |
2580 | sep->rar_addr, sep->rar_bus); | |
0097a69d | 2581 | #endif /* SEP_DRIVER_POLLING_MODE */ |
ca605bb6 | 2582 | end_function_uniomap: |
70ae04e6 | 2583 | iounmap(sep->reg_addr); |
ca605bb6 AC |
2584 | end_function_deallocate_sep_shared_area: |
2585 | /* de-allocate shared area */ | |
8c7ff81a | 2586 | sep_unmap_and_free_shared_area(sep, size); |
ca605bb6 AC |
2587 | end_function_error: |
2588 | sep_dev = NULL; | |
0097a69d AC |
2589 | end_function: |
2590 | return error; | |
2591 | } | |
2592 | ||
13ac58da | 2593 | static const struct pci_device_id sep_pci_id_tbl[] = { |
0097a69d AC |
2594 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080c)}, |
2595 | {0} | |
2596 | }; | |
2597 | ||
2598 | MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl); | |
2599 | ||
2600 | /* field for registering driver to PCI device */ | |
2601 | static struct pci_driver sep_pci_driver = { | |
2602 | .name = "sep_sec_driver", | |
2603 | .id_table = sep_pci_id_tbl, | |
2604 | .probe = sep_probe | |
ca605bb6 | 2605 | /* FIXME: remove handler */ |
0097a69d AC |
2606 | }; |
2607 | ||
2f82614c AC |
2608 | /* major and minor device numbers */ |
2609 | static dev_t sep_devno; | |
2610 | ||
2611 | /* the files operations structure of the driver */ | |
2612 | static struct file_operations sep_file_operations = { | |
2613 | .owner = THIS_MODULE, | |
74e1cd45 | 2614 | .unlocked_ioctl = sep_ioctl, |
2f82614c AC |
2615 | .poll = sep_poll, |
2616 | .open = sep_open, | |
2617 | .release = sep_release, | |
2618 | .mmap = sep_mmap, | |
2619 | }; | |
2620 | ||
2621 | ||
2622 | /* cdev struct of the driver */ | |
2623 | static struct cdev sep_cdev; | |
2624 | ||
a2171b68 AC |
2625 | /* |
2626 | this function registers the driver to the file system | |
2627 | */ | |
2628 | static int sep_register_driver_to_fs(void) | |
2629 | { | |
2f82614c | 2630 | int ret_val = alloc_chrdev_region(&sep_devno, 0, 1, "sep_sec_driver"); |
a2171b68 | 2631 | if (ret_val) { |
a4e80a1b AC |
2632 | edbg("sep: major number allocation failed, retval is %d\n", |
2633 | ret_val); | |
2634 | return ret_val; | |
a2171b68 | 2635 | } |
a2171b68 | 2636 | /* init cdev */ |
2f82614c AC |
2637 | cdev_init(&sep_cdev, &sep_file_operations); |
2638 | sep_cdev.owner = THIS_MODULE; | |
a2171b68 AC |
2639 | |
2640 | /* register the driver with the kernel */ | |
2f82614c | 2641 | ret_val = cdev_add(&sep_cdev, sep_devno, 1); |
a2171b68 AC |
2642 | if (ret_val) { |
2643 | edbg("sep_driver:cdev_add failed, retval is %d\n", ret_val); | |
a4e80a1b AC |
2644 | /* unregister dev numbers */ |
2645 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 | 2646 | } |
a4e80a1b | 2647 | return ret_val; |
a2171b68 AC |
2648 | } |
2649 | ||
a2171b68 AC |
2650 | |
2651 | /*-------------------------------------------------------------- | |
2652 | init function | |
2653 | ----------------------------------------------------------------*/ | |
2654 | static int __init sep_init(void) | |
2655 | { | |
2656 | int ret_val = 0; | |
a2171b68 | 2657 | dbg("SEP Driver:-------->Init start\n"); |
91410066 AC |
2658 | /* FIXME: Probe can occur before we are ready to survive a probe */ |
2659 | ret_val = pci_register_driver(&sep_pci_driver); | |
a2171b68 AC |
2660 | if (ret_val) { |
2661 | edbg("sep_driver:sep_driver_to_device failed, ret_val is %d\n", ret_val); | |
2662 | goto end_function_unregister_from_fs; | |
2663 | } | |
a2171b68 AC |
2664 | /* register driver to fs */ |
2665 | ret_val = sep_register_driver_to_fs(); | |
2666 | if (ret_val) | |
ca605bb6 | 2667 | goto end_function_unregister_pci; |
a2171b68 | 2668 | goto end_function; |
ca605bb6 AC |
2669 | end_function_unregister_pci: |
2670 | pci_unregister_driver(&sep_pci_driver); | |
a2171b68 AC |
2671 | end_function_unregister_from_fs: |
2672 | /* unregister from fs */ | |
91410066 AC |
2673 | cdev_del(&sep_cdev); |
2674 | /* unregister dev numbers */ | |
2675 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 AC |
2676 | end_function: |
2677 | dbg("SEP Driver:<-------- Init end\n"); | |
2678 | return ret_val; | |
2679 | } | |
2680 | ||
2681 | ||
2682 | /*------------------------------------------------------------- | |
2683 | exit function | |
2684 | --------------------------------------------------------------*/ | |
2685 | static void __exit sep_exit(void) | |
2686 | { | |
2687 | int size; | |
2688 | ||
2689 | dbg("SEP Driver:--------> Exit start\n"); | |
2690 | ||
2691 | /* unregister from fs */ | |
91410066 AC |
2692 | cdev_del(&sep_cdev); |
2693 | /* unregister dev numbers */ | |
2694 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 AC |
2695 | /* calculate the total size for de-allocation */ |
2696 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2697 | 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 | 2698 | /* FIXME: We need to do this in the unload for the device */ |
a2171b68 | 2699 | /* free shared area */ |
ca605bb6 | 2700 | if (sep_dev) { |
8c7ff81a | 2701 | sep_unmap_and_free_shared_area(sep_dev, size); |
ca605bb6 AC |
2702 | edbg("SEP Driver: free pages SEP SHARED AREA \n"); |
2703 | iounmap((void *) sep_dev->reg_addr); | |
2704 | edbg("SEP Driver: iounmap \n"); | |
2705 | } | |
a2171b68 AC |
2706 | edbg("SEP Driver: release_mem_region \n"); |
2707 | dbg("SEP Driver:<-------- Exit end\n"); | |
2708 | } | |
2709 | ||
2710 | ||
cd1bb431 MA |
2711 | module_init(sep_init); |
2712 | module_exit(sep_exit); | |
2713 | ||
2714 | MODULE_LICENSE("GPL"); |