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Commit | Line | Data |
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cd1bb431 MA |
1 | /* |
2 | * | |
51faa9d2 | 3 | * sep_driver.c - Security Processor Driver main group of functions |
cd1bb431 MA |
4 | * |
5 | * Copyright(c) 2009 Intel Corporation. All rights reserved. | |
6 | * Copyright(c) 2009 Discretix. All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along with | |
19 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
20 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | * | |
22 | * CONTACTS: | |
23 | * | |
24 | * Mark Allyn mark.a.allyn@intel.com | |
25 | * | |
26 | * CHANGES: | |
27 | * | |
28 | * 2009.06.26 Initial publish | |
29 | * | |
30 | */ | |
31 | ||
32 | #include <linux/init.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/fs.h> | |
35 | #include <linux/cdev.h> | |
36 | #include <linux/kdev_t.h> | |
37 | #include <linux/mutex.h> | |
38 | #include <linux/mm.h> | |
39 | #include <linux/poll.h> | |
40 | #include <linux/wait.h> | |
4439c935 | 41 | #include <linux/sched.h> |
0097a69d AC |
42 | #include <linux/pci.h> |
43 | #include <linux/firmware.h> | |
cd1bb431 MA |
44 | #include <asm/ioctl.h> |
45 | #include <linux/ioport.h> | |
46 | #include <asm/io.h> | |
47 | #include <linux/interrupt.h> | |
48 | #include <linux/pagemap.h> | |
49 | #include <asm/cacheflush.h> | |
50 | #include "sep_driver_hw_defs.h" | |
51 | #include "sep_driver_config.h" | |
52 | #include "sep_driver_api.h" | |
f5e3980f | 53 | #include "sep_dev.h" |
cd1bb431 | 54 | |
0097a69d | 55 | #if SEP_DRIVER_ARM_DEBUG_MODE |
cd1bb431 | 56 | |
0097a69d AC |
57 | #define CRYS_SEP_ROM_length 0x4000 |
58 | #define CRYS_SEP_ROM_start_address 0x8000C000UL | |
59 | #define CRYS_SEP_ROM_start_address_offset 0xC000UL | |
60 | #define SEP_ROM_BANK_register 0x80008420UL | |
61 | #define SEP_ROM_BANK_register_offset 0x8420UL | |
62 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0x82000000 | |
cd1bb431 | 63 | |
0097a69d AC |
64 | /* |
65 | * THESE 2 definitions are specific to the board - must be | |
66 | * defined during integration | |
67 | */ | |
68 | #define SEP_RAR_IO_MEM_REGION_START_ADDRESS 0xFF0D0000 | |
69 | ||
70 | /* 2M size */ | |
71 | ||
ca605bb6 | 72 | static void sep_load_rom_code(struct sep_device *sep) |
0097a69d AC |
73 | { |
74 | /* Index variables */ | |
75 | unsigned long i, k, j; | |
904290c0 AC |
76 | u32 reg; |
77 | u32 error; | |
78 | u32 warning; | |
0097a69d AC |
79 | |
80 | /* Loading ROM from SEP_ROM_image.h file */ | |
81 | k = sizeof(CRYS_SEP_ROM); | |
82 | ||
83 | edbg("SEP Driver: DX_CC_TST_SepRomLoader start\n"); | |
84 | ||
85 | edbg("SEP Driver: k is %lu\n", k); | |
ca605bb6 | 86 | edbg("SEP Driver: sep->reg_addr is %p\n", sep->reg_addr); |
0097a69d AC |
87 | edbg("SEP Driver: CRYS_SEP_ROM_start_address_offset is %p\n", CRYS_SEP_ROM_start_address_offset); |
88 | ||
89 | for (i = 0; i < 4; i++) { | |
90 | /* write bank */ | |
ca605bb6 | 91 | sep_write_reg(sep, SEP_ROM_BANK_register_offset, i); |
0097a69d AC |
92 | |
93 | for (j = 0; j < CRYS_SEP_ROM_length / 4; j++) { | |
ca605bb6 | 94 | sep_write_reg(sep, CRYS_SEP_ROM_start_address_offset + 4 * j, CRYS_SEP_ROM[i * 0x1000 + j]); |
0097a69d AC |
95 | |
96 | k = k - 4; | |
97 | ||
98 | if (k == 0) { | |
99 | j = CRYS_SEP_ROM_length; | |
100 | i = 4; | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
105 | /* reset the SEP */ | |
ca605bb6 | 106 | sep_write_reg(sep, HW_HOST_SEP_SW_RST_REG_ADDR, 0x1); |
0097a69d AC |
107 | |
108 | /* poll for SEP ROM boot finish */ | |
dabe6e69 | 109 | do |
ca605bb6 | 110 | reg = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
dabe6e69 | 111 | while (!reg); |
0097a69d AC |
112 | |
113 | edbg("SEP Driver: ROM polling ended\n"); | |
114 | ||
904290c0 | 115 | switch (reg) { |
0097a69d AC |
116 | case 0x1: |
117 | /* fatal error - read erro status from GPRO */ | |
ca605bb6 | 118 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); |
0097a69d AC |
119 | edbg("SEP Driver: ROM polling case 1\n"); |
120 | break; | |
0097a69d AC |
121 | case 0x4: |
122 | /* Cold boot ended successfully */ | |
0097a69d AC |
123 | case 0x8: |
124 | /* Warmboot ended successfully */ | |
0097a69d AC |
125 | case 0x10: |
126 | /* ColdWarm boot ended successfully */ | |
904290c0 | 127 | error = 0; |
dabe6e69 AC |
128 | case 0x2: |
129 | /* Boot First Phase ended */ | |
130 | warning = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
0097a69d | 131 | case 0x20: |
dabe6e69 | 132 | edbg("SEP Driver: ROM polling case %d\n", reg); |
0097a69d AC |
133 | break; |
134 | } | |
135 | ||
136 | } | |
137 | ||
138 | #else | |
ca605bb6 | 139 | static void sep_load_rom_code(struct sep_device *sep) { } |
0097a69d | 140 | #endif /* SEP_DRIVER_ARM_DEBUG_MODE */ |
cd1bb431 | 141 | |
cd1bb431 MA |
142 | |
143 | ||
0097a69d AC |
144 | /*---------------------------------------- |
145 | DEFINES | |
146 | -----------------------------------------*/ | |
147 | ||
0097a69d AC |
148 | #define BASE_ADDRESS_FOR_SYSTEM 0xfffc0000 |
149 | #define SEP_RAR_IO_MEM_REGION_SIZE 0x40000 | |
cd1bb431 MA |
150 | |
151 | /*-------------------------------------------- | |
152 | GLOBAL variables | |
153 | --------------------------------------------*/ | |
154 | ||
155 | /* debug messages level */ | |
51faa9d2 AC |
156 | static int debug; |
157 | module_param(debug, int , 0); | |
158 | MODULE_PARM_DESC(debug, "Flag to enable SEP debug messages"); | |
cd1bb431 | 159 | |
0097a69d AC |
160 | /* Keep this a single static object for now to keep the conversion easy */ |
161 | ||
162 | static struct sep_device sep_instance; | |
b10b483e | 163 | static struct sep_device *sep_dev = &sep_instance; |
0097a69d | 164 | |
cd1bb431 MA |
165 | /* |
166 | mutex for the access to the internals of the sep driver | |
167 | */ | |
168 | static DEFINE_MUTEX(sep_mutex); | |
169 | ||
170 | ||
171 | /* wait queue head (event) of the driver */ | |
904290c0 | 172 | static DECLARE_WAIT_QUEUE_HEAD(sep_event); |
cd1bb431 | 173 | |
6f13ea3d AC |
174 | /** |
175 | * sep_load_firmware - copy firmware cache/resident | |
176 | * @sep: device we are loading | |
177 | * | |
178 | * This functions copies the cache and resident from their source | |
179 | * location into destination shared memory. | |
180 | */ | |
181 | ||
182 | static int sep_load_firmware(struct sep_device *sep) | |
0097a69d | 183 | { |
0097a69d | 184 | const struct firmware *fw; |
0097a69d AC |
185 | char *cache_name = "cache.image.bin"; |
186 | char *res_name = "resident.image.bin"; | |
0097a69d AC |
187 | int error; |
188 | ||
ca605bb6 | 189 | edbg("SEP Driver:rar_virtual is %p\n", sep->rar_addr); |
51faa9d2 | 190 | edbg("SEP Driver:rar_bus is %08llx\n", (unsigned long long)sep->rar_bus); |
0097a69d | 191 | |
0097a69d | 192 | /* load cache */ |
ca605bb6 | 193 | error = request_firmware(&fw, cache_name, &sep->pdev->dev); |
0097a69d AC |
194 | if (error) { |
195 | edbg("SEP Driver:cant request cache fw\n"); | |
6f13ea3d | 196 | return error; |
0097a69d | 197 | } |
6f13ea3d | 198 | edbg("SEP Driver:cache %08Zx@%p\n", fw->size, (void *) fw->data); |
0097a69d | 199 | |
70ae04e6 | 200 | memcpy(sep->rar_addr, (void *)fw->data, fw->size); |
790cf1b9 | 201 | sep->cache_size = fw->size; |
0097a69d AC |
202 | release_firmware(fw); |
203 | ||
70ae04e6 AC |
204 | sep->resident_bus = sep->rar_bus + sep->cache_size; |
205 | sep->resident_addr = sep->rar_addr + sep->cache_size; | |
0097a69d AC |
206 | |
207 | /* load resident */ | |
ca605bb6 | 208 | error = request_firmware(&fw, res_name, &sep->pdev->dev); |
0097a69d AC |
209 | if (error) { |
210 | edbg("SEP Driver:cant request res fw\n"); | |
6f13ea3d | 211 | return error; |
0097a69d | 212 | } |
6f13ea3d | 213 | edbg("sep: res %08Zx@%p\n", fw->size, (void *)fw->data); |
0097a69d | 214 | |
6f13ea3d | 215 | memcpy(sep->resident_addr, (void *) fw->data, fw->size); |
ca605bb6 | 216 | sep->resident_size = fw->size; |
0097a69d AC |
217 | release_firmware(fw); |
218 | ||
6f13ea3d AC |
219 | edbg("sep: resident v %p b %08llx cache v %p b %08llx\n", |
220 | sep->resident_addr, (unsigned long long)sep->resident_bus, | |
70ae04e6 | 221 | sep->rar_addr, (unsigned long long)sep->rar_bus); |
6f13ea3d | 222 | return 0; |
0097a69d AC |
223 | } |
224 | ||
ad6b9ab7 AC |
225 | /** |
226 | * sep_map_and_alloc_shared_area - allocate shared block | |
227 | * @sep: security processor | |
228 | * @size: size of shared area | |
229 | * | |
230 | * Allocate a shared buffer in host memory that can be used by both the | |
231 | * kernel and also the hardware interface via DMA. | |
232 | */ | |
233 | ||
ca605bb6 | 234 | static int sep_map_and_alloc_shared_area(struct sep_device *sep, |
ad6b9ab7 | 235 | unsigned long size) |
0097a69d | 236 | { |
ca605bb6 | 237 | /* shared_addr = ioremap_nocache(0xda00000,shared_area_size); */ |
c7b75562 | 238 | sep->shared_addr = dma_alloc_coherent(&sep->pdev->dev, size, |
ad6b9ab7 AC |
239 | &sep->shared_bus, GFP_KERNEL); |
240 | ||
ca605bb6 | 241 | if (!sep->shared_addr) { |
ad6b9ab7 AC |
242 | edbg("sep_driver :shared memory dma_alloc_coherent failed\n"); |
243 | return -ENOMEM; | |
0097a69d | 244 | } |
51faa9d2 | 245 | /* set the bus address of the shared area */ |
70ae04e6 | 246 | edbg("sep: shared_addr %ld bytes @%p (bus %08llx)\n", |
ad6b9ab7 | 247 | size, sep->shared_addr, (unsigned long long)sep->shared_bus); |
0097a69d AC |
248 | return 0; |
249 | } | |
250 | ||
ad6b9ab7 AC |
251 | /** |
252 | * sep_unmap_and_free_shared_area - free shared block | |
253 | * @sep: security processor | |
254 | * | |
255 | * Free the shared area allocated to the security processor. The | |
256 | * processor must have finished with this and any final posted | |
257 | * writes cleared before we do so. | |
258 | */ | |
8c7ff81a | 259 | static void sep_unmap_and_free_shared_area(struct sep_device *sep, int size) |
0097a69d | 260 | { |
ad6b9ab7 | 261 | dma_free_coherent(&sep->pdev->dev, size, |
70ae04e6 | 262 | sep->shared_addr, sep->shared_bus); |
0097a69d AC |
263 | } |
264 | ||
ad6b9ab7 | 265 | /** |
70ae04e6 | 266 | * sep_shared_virt_to_bus - convert bus/virt addresses |
ad6b9ab7 | 267 | * |
51faa9d2 | 268 | * Returns the bus address inside the shared area according |
ad6b9ab7 AC |
269 | * to the virtual address. |
270 | */ | |
271 | ||
70ae04e6 | 272 | static dma_addr_t sep_shared_virt_to_bus(struct sep_device *sep, |
790cf1b9 | 273 | void *virt_address) |
0097a69d | 274 | { |
ad6b9ab7 | 275 | dma_addr_t pa = sep->shared_bus + (virt_address - sep->shared_addr); |
727acb4f RD |
276 | edbg("sep: virt to bus b %08llx v %p\n", |
277 | (unsigned long long)pa, virt_address); | |
ad6b9ab7 | 278 | return pa; |
0097a69d AC |
279 | } |
280 | ||
ad6b9ab7 | 281 | /** |
70ae04e6 | 282 | * sep_shared_bus_to_virt - convert bus/virt addresses |
ad6b9ab7 AC |
283 | * |
284 | * Returns virtual address inside the shared area according | |
285 | * to the bus address. | |
286 | */ | |
287 | ||
70ae04e6 | 288 | static void *sep_shared_bus_to_virt(struct sep_device *sep, |
ad6b9ab7 | 289 | dma_addr_t bus_address) |
0097a69d | 290 | { |
ad6b9ab7 | 291 | return sep->shared_addr + (bus_address - sep->shared_bus); |
0097a69d AC |
292 | } |
293 | ||
294 | ||
4c29e979 AC |
295 | /** |
296 | * sep_try_open - attempt to open a SEP device | |
297 | * @sep: device to attempt to open | |
298 | * | |
299 | * Atomically attempt to get ownership of a SEP device. | |
300 | * Returns 1 if the device was opened, 0 on failure. | |
301 | */ | |
302 | ||
303 | static int sep_try_open(struct sep_device *sep) | |
cd1bb431 | 304 | { |
4c29e979 AC |
305 | if (!test_and_set_bit(0, &sep->in_use)) |
306 | return 1; | |
307 | return 0; | |
308 | } | |
309 | ||
310 | /** | |
311 | * sep_open - device open method | |
312 | * @inode: inode of sep device | |
313 | * @filp: file handle to sep device | |
314 | * | |
315 | * Open method for the SEP device. Called when userspace opens | |
316 | * the SEP device node. Must also release the memory data pool | |
317 | * allocations. | |
318 | * | |
319 | * Returns zero on success otherwise an error code. | |
320 | */ | |
cd1bb431 | 321 | |
4c29e979 AC |
322 | static int sep_open(struct inode *inode, struct file *filp) |
323 | { | |
324 | if (sep_dev == NULL) | |
325 | return -ENODEV; | |
cd1bb431 | 326 | |
d19cf32f | 327 | /* check the blocking mode */ |
4c29e979 AC |
328 | if (filp->f_flags & O_NDELAY) { |
329 | if (sep_try_open(sep_dev) == 0) | |
330 | return -EAGAIN; | |
331 | } else | |
332 | if (wait_event_interruptible(sep_event, sep_try_open(sep_dev)) < 0) | |
333 | return -EINTR; | |
cd1bb431 | 334 | |
ca605bb6 AC |
335 | /* Bind to the device, we only have one which makes it easy */ |
336 | filp->private_data = sep_dev; | |
d19cf32f AC |
337 | /* release data pool allocations */ |
338 | sep_dev->data_pool_bytes_allocated = 0; | |
4c29e979 | 339 | return 0; |
cd1bb431 MA |
340 | } |
341 | ||
342 | ||
4c29e979 AC |
343 | /** |
344 | * sep_release - close a SEP device | |
345 | * @inode: inode of SEP device | |
346 | * @filp: file handle being closed | |
347 | * | |
348 | * Called on the final close of a SEP device. As the open protects against | |
349 | * multiple simultaenous opens that means this method is called when the | |
350 | * final reference to the open handle is dropped. | |
351 | */ | |
cd1bb431 | 352 | |
4c29e979 | 353 | static int sep_release(struct inode *inode, struct file *filp) |
cd1bb431 | 354 | { |
4c29e979 | 355 | struct sep_device *sep = filp->private_data; |
d19cf32f AC |
356 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
357 | /* close IMR */ | |
ca605bb6 | 358 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, 0x7FFF); |
d19cf32f | 359 | /* release IRQ line */ |
ca605bb6 | 360 | free_irq(SEP_DIRVER_IRQ_NUM, sep); |
cd1bb431 MA |
361 | |
362 | #endif | |
4c29e979 AC |
363 | /* Ensure any blocked open progresses */ |
364 | clear_bit(0, &sep->in_use); | |
365 | wake_up(&sep_event); | |
d19cf32f | 366 | return 0; |
cd1bb431 MA |
367 | } |
368 | ||
cd1bb431 MA |
369 | /*--------------------------------------------------------------- |
370 | map function - this functions maps the message shared area | |
371 | -----------------------------------------------------------------*/ | |
d19cf32f | 372 | static int sep_mmap(struct file *filp, struct vm_area_struct *vma) |
cd1bb431 | 373 | { |
51faa9d2 | 374 | dma_addr_t bus_addr; |
ca605bb6 | 375 | struct sep_device *sep = filp->private_data; |
cd1bb431 | 376 | |
d19cf32f | 377 | dbg("-------->SEP Driver: mmap start\n"); |
cd1bb431 | 378 | |
d19cf32f AC |
379 | /* check that the size of the mapped range is as the size of the message |
380 | shared area */ | |
381 | if ((vma->vm_end - vma->vm_start) > SEP_DRIVER_MMMAP_AREA_SIZE) { | |
382 | edbg("SEP Driver mmap requested size is more than allowed\n"); | |
383 | printk(KERN_WARNING "SEP Driver mmap requested size is more \ | |
cd1bb431 | 384 | than allowed\n"); |
d19cf32f AC |
385 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_end); |
386 | printk(KERN_WARNING "SEP Driver vma->vm_end is %08lx\n", vma->vm_start); | |
387 | return -EAGAIN; | |
388 | } | |
389 | ||
70ae04e6 | 390 | edbg("SEP Driver:sep->shared_addr is %p\n", sep->shared_addr); |
d19cf32f | 391 | |
51faa9d2 | 392 | /* get bus address */ |
70ae04e6 | 393 | bus_addr = sep->shared_bus; |
d19cf32f | 394 | |
51faa9d2 | 395 | edbg("SEP Driver: phys_addr is %08llx\n", (unsigned long long)bus_addr); |
d19cf32f | 396 | |
51faa9d2 | 397 | if (remap_pfn_range(vma, vma->vm_start, bus_addr >> PAGE_SHIFT, vma->vm_end - vma->vm_start, vma->vm_page_prot)) { |
d19cf32f AC |
398 | edbg("SEP Driver remap_page_range failed\n"); |
399 | printk(KERN_WARNING "SEP Driver remap_page_range failed\n"); | |
400 | return -EAGAIN; | |
401 | } | |
402 | ||
403 | dbg("SEP Driver:<-------- mmap end\n"); | |
404 | ||
405 | return 0; | |
cd1bb431 MA |
406 | } |
407 | ||
408 | ||
409 | /*----------------------------------------------- | |
410 | poll function | |
411 | *----------------------------------------------*/ | |
d19cf32f | 412 | static unsigned int sep_poll(struct file *filp, poll_table * wait) |
cd1bb431 | 413 | { |
d19cf32f | 414 | unsigned long count; |
d19cf32f | 415 | unsigned int mask = 0; |
51faa9d2 | 416 | unsigned long retval = 0; /* flow id */ |
ca605bb6 | 417 | struct sep_device *sep = filp->private_data; |
cd1bb431 | 418 | |
d19cf32f | 419 | dbg("---------->SEP Driver poll: start\n"); |
cd1bb431 MA |
420 | |
421 | ||
422 | #if SEP_DRIVER_POLLING_MODE | |
423 | ||
51faa9d2 AC |
424 | while (sep->send_ct != (retval & 0x7FFFFFFF)) { |
425 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR); | |
cd1bb431 | 426 | |
d19cf32f | 427 | for (count = 0; count < 10 * 4; count += 4) |
70ae04e6 | 428 | 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 | 429 | } |
cd1bb431 | 430 | |
ca605bb6 | 431 | sep->reply_ct++; |
cd1bb431 | 432 | #else |
d19cf32f | 433 | /* add the event to the polling wait table */ |
904290c0 | 434 | poll_wait(filp, &sep_event, wait); |
cd1bb431 MA |
435 | |
436 | #endif | |
437 | ||
ca605bb6 AC |
438 | edbg("sep->send_ct is %lu\n", sep->send_ct); |
439 | edbg("sep->reply_ct is %lu\n", sep->reply_ct); | |
d19cf32f AC |
440 | |
441 | /* check if the data is ready */ | |
ca605bb6 | 442 | if (sep->send_ct == sep->reply_ct) { |
d19cf32f | 443 | for (count = 0; count < 12 * 4; count += 4) |
70ae04e6 | 444 | edbg("Sep Mesg Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + count))); |
d19cf32f AC |
445 | |
446 | for (count = 0; count < 10 * 4; count += 4) | |
70ae04e6 | 447 | edbg("Debug Data Word %lu of the message is %lu\n", count, *((unsigned long *) (sep->shared_addr + 0x1800 + count))); |
d19cf32f | 448 | |
51faa9d2 AC |
449 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR2_REG_ADDR); |
450 | edbg("retval is %lu\n", retval); | |
d19cf32f | 451 | /* check if the this is sep reply or request */ |
51faa9d2 | 452 | if (retval >> 31) { |
d19cf32f AC |
453 | edbg("SEP Driver: sep request in\n"); |
454 | /* request */ | |
455 | mask |= POLLOUT | POLLWRNORM; | |
456 | } else { | |
457 | edbg("SEP Driver: sep reply in\n"); | |
458 | mask |= POLLIN | POLLRDNORM; | |
459 | } | |
cd1bb431 | 460 | } |
d19cf32f AC |
461 | dbg("SEP Driver:<-------- poll exit\n"); |
462 | return mask; | |
cd1bb431 MA |
463 | } |
464 | ||
cfd498be AC |
465 | /** |
466 | * sep_time_address - address in SEP memory of time | |
467 | * @sep: SEP device we want the address from | |
468 | * | |
469 | * Return the address of the two dwords in memory used for time | |
470 | * setting. | |
471 | */ | |
472 | ||
473 | static u32 *sep_time_address(struct sep_device *sep) | |
474 | { | |
475 | return sep->shared_addr + SEP_DRIVER_SYSTEM_TIME_MEMORY_OFFSET_IN_BYTES; | |
476 | } | |
477 | ||
478 | /** | |
479 | * sep_set_time - set the SEP time | |
480 | * @sep: the SEP we are setting the time for | |
481 | * | |
482 | * Calculates time and sets it at the predefined address. | |
483 | * Called with the sep mutex held. | |
484 | */ | |
485 | static unsigned long sep_set_time(struct sep_device *sep) | |
cd1bb431 | 486 | { |
0a18d7b5 | 487 | struct timeval time; |
cfd498be | 488 | u32 *time_addr; /* address of time as seen by the kernel */ |
cd1bb431 | 489 | |
cd1bb431 | 490 | |
cfd498be | 491 | dbg("sep:sep_set_time start\n"); |
cd1bb431 | 492 | |
0a18d7b5 | 493 | do_gettimeofday(&time); |
cd1bb431 | 494 | |
0a18d7b5 | 495 | /* set value in the SYSTEM MEMORY offset */ |
cfd498be | 496 | time_addr = sep_time_address(sep); |
cd1bb431 | 497 | |
790cf1b9 AC |
498 | time_addr[0] = SEP_TIME_VAL_TOKEN; |
499 | time_addr[1] = time.tv_sec; | |
cd1bb431 | 500 | |
0a18d7b5 | 501 | edbg("SEP Driver:time.tv_sec is %lu\n", time.tv_sec); |
790cf1b9 | 502 | edbg("SEP Driver:time_addr is %p\n", time_addr); |
70ae04e6 | 503 | edbg("SEP Driver:sep->shared_addr is %p\n", sep->shared_addr); |
b6368033 | 504 | |
cfd498be | 505 | return time.tv_sec; |
0a18d7b5 | 506 | } |
b6368033 | 507 | |
2e7dcc3b AC |
508 | /** |
509 | * sep_dump_message - dump the message that is pending | |
510 | * @sep: sep device | |
511 | * | |
512 | * Dump out the message pending in the shared message area | |
513 | */ | |
514 | ||
515 | static void sep_dump_message(struct sep_device *sep) | |
516 | { | |
517 | int count; | |
518 | for (count = 0; count < 12 * 4; count += 4) | |
519 | edbg("Word %d of the message is %u\n", count, *((u32 *) (sep->shared_addr + count))); | |
520 | } | |
521 | ||
522 | /** | |
523 | * sep_send_command_handler - kick off a command | |
524 | * @sep: sep being signalled | |
525 | * | |
526 | * This function raises interrupt to SEP that signals that is has a new | |
527 | * command from the host | |
528 | */ | |
529 | ||
ca605bb6 | 530 | static void sep_send_command_handler(struct sep_device *sep) |
0a18d7b5 | 531 | { |
2e7dcc3b | 532 | dbg("sep:sep_send_command_handler start\n"); |
b6368033 | 533 | |
2e7dcc3b | 534 | mutex_lock(&sep_mutex); |
cfd498be | 535 | sep_set_time(sep); |
b6368033 | 536 | |
2e7dcc3b | 537 | /* FIXME: flush cache */ |
0a18d7b5 | 538 | flush_cache_all(); |
b6368033 | 539 | |
2e7dcc3b | 540 | sep_dump_message(sep); |
0a18d7b5 | 541 | /* update counter */ |
ca605bb6 | 542 | sep->send_ct++; |
0a18d7b5 | 543 | /* send interrupt to SEP */ |
ca605bb6 | 544 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); |
0a18d7b5 | 545 | dbg("SEP Driver:<-------- sep_send_command_handler end\n"); |
2e7dcc3b | 546 | mutex_unlock(&sep_mutex); |
0a18d7b5 | 547 | return; |
b6368033 | 548 | } |
0a18d7b5 | 549 | |
2e7dcc3b AC |
550 | /** |
551 | * sep_send_reply_command_handler - kick off a command reply | |
552 | * @sep: sep being signalled | |
553 | * | |
554 | * This function raises interrupt to SEP that signals that is has a new | |
555 | * command from the host | |
556 | */ | |
557 | ||
ca605bb6 | 558 | static void sep_send_reply_command_handler(struct sep_device *sep) |
cd1bb431 | 559 | { |
2e7dcc3b | 560 | dbg("sep:sep_send_reply_command_handler start\n"); |
cd1bb431 | 561 | |
0a18d7b5 AC |
562 | /* flash cache */ |
563 | flush_cache_all(); | |
2e7dcc3b AC |
564 | |
565 | sep_dump_message(sep); | |
566 | ||
567 | mutex_lock(&sep_mutex); | |
568 | sep->send_ct++; /* update counter */ | |
0a18d7b5 | 569 | /* send the interrupt to SEP */ |
ca605bb6 | 570 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR, sep->send_ct); |
0a18d7b5 | 571 | /* update both counters */ |
ca605bb6 AC |
572 | sep->send_ct++; |
573 | sep->reply_ct++; | |
2e7dcc3b AC |
574 | mutex_unlock(&sep_mutex); |
575 | dbg("sep: sep_send_reply_command_handler end\n"); | |
0a18d7b5 | 576 | } |
cd1bb431 | 577 | |
0a18d7b5 AC |
578 | /* |
579 | This function handles the allocate data pool memory request | |
51faa9d2 | 580 | This function returns calculates the bus address of the |
0a18d7b5 AC |
581 | allocated memory, and the offset of this area from the mapped address. |
582 | Therefore, the FVOs in user space can calculate the exact virtual | |
583 | address of this allocated memory | |
584 | */ | |
ca605bb6 AC |
585 | static int sep_allocate_data_pool_memory_handler(struct sep_device *sep, |
586 | unsigned long arg) | |
0a18d7b5 AC |
587 | { |
588 | int error; | |
589 | struct sep_driver_alloc_t command_args; | |
cd1bb431 | 590 | |
0a18d7b5 | 591 | dbg("SEP Driver:--------> sep_allocate_data_pool_memory_handler start\n"); |
cd1bb431 | 592 | |
0a18d7b5 AC |
593 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_alloc_t)); |
594 | if (error) | |
595 | goto end_function; | |
cd1bb431 | 596 | |
0a18d7b5 | 597 | /* allocate memory */ |
ca605bb6 | 598 | if ((sep->data_pool_bytes_allocated + command_args.num_bytes) > SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { |
51faa9d2 | 599 | error = -ENOMEM; |
0a18d7b5 AC |
600 | goto end_function; |
601 | } | |
cd1bb431 | 602 | |
51faa9d2 | 603 | /* set the virtual and bus address */ |
ca605bb6 | 604 | command_args.offset = SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep->data_pool_bytes_allocated; |
70ae04e6 | 605 | command_args.phys_address = sep->shared_bus + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES + sep->data_pool_bytes_allocated; |
0a18d7b5 AC |
606 | |
607 | /* write the memory back to the user space */ | |
608 | error = copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_alloc_t)); | |
609 | if (error) | |
610 | goto end_function; | |
611 | ||
612 | /* set the allocation */ | |
ca605bb6 | 613 | sep->data_pool_bytes_allocated += command_args.num_bytes; |
d19cf32f | 614 | |
f93e4bf9 | 615 | end_function: |
0a18d7b5 AC |
616 | dbg("SEP Driver:<-------- sep_allocate_data_pool_memory_handler end\n"); |
617 | return error; | |
cd1bb431 MA |
618 | } |
619 | ||
cd1bb431 | 620 | /* |
0a18d7b5 | 621 | This function handles write into allocated data pool command |
cd1bb431 | 622 | */ |
ca605bb6 | 623 | static int sep_write_into_data_pool_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 624 | { |
0a18d7b5 | 625 | int error; |
790cf1b9 AC |
626 | void *virt_address; |
627 | unsigned long va; | |
0a18d7b5 AC |
628 | unsigned long app_in_address; |
629 | unsigned long num_bytes; | |
790cf1b9 | 630 | void *data_pool_area_addr; |
cd1bb431 | 631 | |
0a18d7b5 | 632 | dbg("SEP Driver:--------> sep_write_into_data_pool_handler start\n"); |
cd1bb431 | 633 | |
0a18d7b5 AC |
634 | /* get the application address */ |
635 | error = get_user(app_in_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
636 | if (error) | |
637 | goto end_function; | |
cd1bb431 | 638 | |
0a18d7b5 | 639 | /* get the virtual kernel address address */ |
790cf1b9 | 640 | error = get_user(va, &(((struct sep_driver_write_t *) arg)->datapool_address)); |
0a18d7b5 AC |
641 | if (error) |
642 | goto end_function; | |
790cf1b9 | 643 | virt_address = (void *)va; |
cd1bb431 | 644 | |
0a18d7b5 AC |
645 | /* get the number of bytes */ |
646 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
647 | if (error) | |
648 | goto end_function; | |
cd1bb431 | 649 | |
0a18d7b5 | 650 | /* calculate the start of the data pool */ |
70ae04e6 | 651 | data_pool_area_addr = sep->shared_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; |
cd1bb431 | 652 | |
cd1bb431 | 653 | |
0a18d7b5 | 654 | /* check that the range of the virtual kernel address is correct */ |
ca605bb6 | 655 | if (virt_address < data_pool_area_addr || virt_address > (data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES)) { |
51faa9d2 | 656 | error = -EINVAL; |
d19cf32f | 657 | goto end_function; |
cd1bb431 | 658 | } |
0a18d7b5 | 659 | /* copy the application data */ |
790cf1b9 | 660 | error = copy_from_user(virt_address, (void *) app_in_address, num_bytes); |
0a18d7b5 AC |
661 | end_function: |
662 | dbg("SEP Driver:<-------- sep_write_into_data_pool_handler end\n"); | |
663 | return error; | |
664 | } | |
cd1bb431 | 665 | |
0a18d7b5 AC |
666 | /* |
667 | this function handles the read from data pool command | |
668 | */ | |
ca605bb6 | 669 | static int sep_read_from_data_pool_handler(struct sep_device *sep, unsigned long arg) |
0a18d7b5 AC |
670 | { |
671 | int error; | |
672 | /* virtual address of dest application buffer */ | |
673 | unsigned long app_out_address; | |
674 | /* virtual address of the data pool */ | |
790cf1b9 AC |
675 | unsigned long va; |
676 | void *virt_address; | |
0a18d7b5 | 677 | unsigned long num_bytes; |
790cf1b9 | 678 | void *data_pool_area_addr; |
cd1bb431 | 679 | |
0a18d7b5 | 680 | dbg("SEP Driver:--------> sep_read_from_data_pool_handler start\n"); |
cd1bb431 | 681 | |
0a18d7b5 AC |
682 | /* get the application address */ |
683 | error = get_user(app_out_address, &(((struct sep_driver_write_t *) arg)->app_address)); | |
684 | if (error) | |
685 | goto end_function; | |
cd1bb431 | 686 | |
0a18d7b5 | 687 | /* get the virtual kernel address address */ |
790cf1b9 | 688 | error = get_user(va, &(((struct sep_driver_write_t *) arg)->datapool_address)); |
0a18d7b5 AC |
689 | if (error) |
690 | goto end_function; | |
790cf1b9 | 691 | virt_address = (void *)va; |
cd1bb431 | 692 | |
0a18d7b5 AC |
693 | /* get the number of bytes */ |
694 | error = get_user(num_bytes, &(((struct sep_driver_write_t *) arg)->num_bytes)); | |
695 | if (error) | |
696 | goto end_function; | |
cd1bb431 | 697 | |
0a18d7b5 | 698 | /* calculate the start of the data pool */ |
70ae04e6 | 699 | data_pool_area_addr = sep->shared_addr + SEP_DRIVER_DATA_POOL_AREA_OFFSET_IN_BYTES; |
d19cf32f | 700 | |
ca605bb6 AC |
701 | /* FIXME: These are incomplete all over the driver: what about + len |
702 | and when doing that also overflows */ | |
0a18d7b5 | 703 | /* check that the range of the virtual kernel address is correct */ |
ca605bb6 | 704 | if (virt_address < data_pool_area_addr || virt_address > data_pool_area_addr + SEP_DRIVER_DATA_POOL_SHARED_AREA_SIZE_IN_BYTES) { |
51faa9d2 | 705 | error = -EINVAL; |
0a18d7b5 AC |
706 | goto end_function; |
707 | } | |
d19cf32f | 708 | |
0a18d7b5 | 709 | /* copy the application data */ |
790cf1b9 | 710 | error = copy_to_user((void *) app_out_address, virt_address, num_bytes); |
0a18d7b5 AC |
711 | end_function: |
712 | dbg("SEP Driver:<-------- sep_read_from_data_pool_handler end\n"); | |
713 | return error; | |
714 | } | |
d19cf32f | 715 | |
0a18d7b5 AC |
716 | /* |
717 | This function releases all the application virtual buffer physical pages, | |
718 | that were previously locked | |
719 | */ | |
720 | static int sep_free_dma_pages(struct page **page_array_ptr, unsigned long num_pages, unsigned long dirtyFlag) | |
721 | { | |
722 | unsigned long count; | |
d19cf32f | 723 | |
0a18d7b5 AC |
724 | if (dirtyFlag) { |
725 | for (count = 0; count < num_pages; count++) { | |
726 | /* the out array was written, therefore the data was changed */ | |
727 | if (!PageReserved(page_array_ptr[count])) | |
728 | SetPageDirty(page_array_ptr[count]); | |
729 | page_cache_release(page_array_ptr[count]); | |
d19cf32f | 730 | } |
0a18d7b5 AC |
731 | } else { |
732 | /* free in pages - the data was only read, therefore no update was done | |
733 | on those pages */ | |
734 | for (count = 0; count < num_pages; count++) | |
735 | page_cache_release(page_array_ptr[count]); | |
d19cf32f AC |
736 | } |
737 | ||
0a18d7b5 AC |
738 | if (page_array_ptr) |
739 | /* free the array */ | |
740 | kfree(page_array_ptr); | |
d19cf32f | 741 | |
d19cf32f | 742 | return 0; |
cd1bb431 MA |
743 | } |
744 | ||
745 | /* | |
0a18d7b5 AC |
746 | This function locks all the physical pages of the kernel virtual buffer |
747 | and construct a basic lli array, where each entry holds the physical | |
748 | page address and the size that application data holds in this physical pages | |
cd1bb431 | 749 | */ |
ca605bb6 AC |
750 | static int sep_lock_kernel_pages(struct sep_device *sep, |
751 | unsigned long kernel_virt_addr, | |
752 | unsigned long data_size, | |
753 | unsigned long *num_pages_ptr, | |
754 | struct sep_lli_entry_t **lli_array_ptr, | |
755 | struct page ***page_array_ptr) | |
cd1bb431 | 756 | { |
0a18d7b5 AC |
757 | int error = 0; |
758 | /* the the page of the end address of the user space buffer */ | |
759 | unsigned long end_page; | |
760 | /* the page of the start address of the user space buffer */ | |
761 | unsigned long start_page; | |
762 | /* the range in pages */ | |
763 | unsigned long num_pages; | |
764 | struct sep_lli_entry_t *lli_array; | |
765 | /* next kernel address to map */ | |
766 | unsigned long next_kernel_address; | |
767 | unsigned long count; | |
cd1bb431 | 768 | |
0a18d7b5 | 769 | dbg("SEP Driver:--------> sep_lock_kernel_pages start\n"); |
cd1bb431 | 770 | |
0a18d7b5 AC |
771 | /* set start and end pages and num pages */ |
772 | end_page = (kernel_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
773 | start_page = kernel_virt_addr >> PAGE_SHIFT; | |
774 | num_pages = end_page - start_page + 1; | |
cd1bb431 | 775 | |
0a18d7b5 AC |
776 | edbg("SEP Driver: kernel_virt_addr is %08lx\n", kernel_virt_addr); |
777 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
778 | edbg("SEP Driver: start_page is %lx\n", start_page); | |
779 | edbg("SEP Driver: end_page is %lx\n", end_page); | |
780 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
d19cf32f | 781 | |
0a18d7b5 AC |
782 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
783 | if (!lli_array) { | |
784 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
785 | error = -ENOMEM; | |
786 | goto end_function; | |
cd1bb431 | 787 | } |
cd1bb431 | 788 | |
0a18d7b5 AC |
789 | /* set the start address of the first page - app data may start not at |
790 | the beginning of the page */ | |
791 | lli_array[0].physical_address = (unsigned long) virt_to_phys((unsigned long *) kernel_virt_addr); | |
cd1bb431 | 792 | |
0a18d7b5 AC |
793 | /* check that not all the data is in the first page only */ |
794 | if ((PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK))) >= data_size) | |
795 | lli_array[0].block_size = data_size; | |
796 | else | |
797 | lli_array[0].block_size = PAGE_SIZE - (kernel_virt_addr & (~PAGE_MASK)); | |
798 | ||
799 | /* debug print */ | |
800 | 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); | |
801 | ||
802 | /* advance the address to the start of the next page */ | |
803 | next_kernel_address = (kernel_virt_addr & PAGE_MASK) + PAGE_SIZE; | |
804 | ||
805 | /* go from the second page to the prev before last */ | |
806 | for (count = 1; count < (num_pages - 1); count++) { | |
807 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
808 | lli_array[count].block_size = PAGE_SIZE; | |
809 | ||
810 | 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); | |
811 | next_kernel_address += PAGE_SIZE; | |
d19cf32f | 812 | } |
cd1bb431 | 813 | |
0a18d7b5 AC |
814 | /* if more then 1 pages locked - then update for the last page size needed */ |
815 | if (num_pages > 1) { | |
816 | /* update the address of the last page */ | |
817 | lli_array[count].physical_address = (unsigned long) virt_to_phys((unsigned long *) next_kernel_address); | |
cd1bb431 | 818 | |
0a18d7b5 AC |
819 | /* set the size of the last page */ |
820 | lli_array[count].block_size = (kernel_virt_addr + data_size) & (~PAGE_MASK); | |
cd1bb431 | 821 | |
0a18d7b5 AC |
822 | if (lli_array[count].block_size == 0) { |
823 | dbg("app_virt_addr is %08lx\n", kernel_virt_addr); | |
824 | dbg("data_size is %lu\n", data_size); | |
825 | while (1); | |
826 | } | |
cd1bb431 | 827 | |
0a18d7b5 AC |
828 | 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); |
829 | } | |
830 | /* set output params */ | |
831 | *lli_array_ptr = lli_array; | |
832 | *num_pages_ptr = num_pages; | |
833 | *page_array_ptr = 0; | |
834 | end_function: | |
835 | dbg("SEP Driver:<-------- sep_lock_kernel_pages end\n"); | |
836 | return 0; | |
837 | } | |
838 | ||
839 | /* | |
840 | This function locks all the physical pages of the application virtual buffer | |
841 | and construct a basic lli array, where each entry holds the physical page | |
842 | address and the size that application data holds in this physical pages | |
cd1bb431 | 843 | */ |
ca605bb6 AC |
844 | static int sep_lock_user_pages(struct sep_device *sep, |
845 | unsigned long app_virt_addr, | |
846 | unsigned long data_size, | |
847 | unsigned long *num_pages_ptr, | |
848 | struct sep_lli_entry_t **lli_array_ptr, | |
849 | struct page ***page_array_ptr) | |
cd1bb431 | 850 | { |
0a18d7b5 AC |
851 | int error = 0; |
852 | /* the the page of the end address of the user space buffer */ | |
853 | unsigned long end_page; | |
854 | /* the page of the start address of the user space buffer */ | |
855 | unsigned long start_page; | |
856 | /* the range in pages */ | |
857 | unsigned long num_pages; | |
858 | struct page **page_array; | |
859 | struct sep_lli_entry_t *lli_array; | |
860 | unsigned long count; | |
861 | int result; | |
d19cf32f | 862 | |
0a18d7b5 | 863 | dbg("SEP Driver:--------> sep_lock_user_pages start\n"); |
d19cf32f | 864 | |
0a18d7b5 AC |
865 | /* set start and end pages and num pages */ |
866 | end_page = (app_virt_addr + data_size - 1) >> PAGE_SHIFT; | |
867 | start_page = app_virt_addr >> PAGE_SHIFT; | |
868 | num_pages = end_page - start_page + 1; | |
d19cf32f | 869 | |
0a18d7b5 AC |
870 | edbg("SEP Driver: app_virt_addr is %08lx\n", app_virt_addr); |
871 | edbg("SEP Driver: data_size is %lu\n", data_size); | |
872 | edbg("SEP Driver: start_page is %lu\n", start_page); | |
873 | edbg("SEP Driver: end_page is %lu\n", end_page); | |
874 | edbg("SEP Driver: num_pages is %lu\n", num_pages); | |
d19cf32f | 875 | |
0a18d7b5 AC |
876 | /* allocate array of pages structure pointers */ |
877 | page_array = kmalloc(sizeof(struct page *) * num_pages, GFP_ATOMIC); | |
878 | if (!page_array) { | |
879 | edbg("SEP Driver: kmalloc for page_array failed\n"); | |
d19cf32f | 880 | |
0a18d7b5 AC |
881 | error = -ENOMEM; |
882 | goto end_function; | |
883 | } | |
d19cf32f | 884 | |
0a18d7b5 AC |
885 | lli_array = kmalloc(sizeof(struct sep_lli_entry_t) * num_pages, GFP_ATOMIC); |
886 | if (!lli_array) { | |
887 | edbg("SEP Driver: kmalloc for lli_array failed\n"); | |
d19cf32f | 888 | |
0a18d7b5 AC |
889 | error = -ENOMEM; |
890 | goto end_function_with_error1; | |
891 | } | |
d19cf32f | 892 | |
0a18d7b5 AC |
893 | /* convert the application virtual address into a set of physical */ |
894 | down_read(¤t->mm->mmap_sem); | |
895 | result = get_user_pages(current, current->mm, app_virt_addr, num_pages, 1, 0, page_array, 0); | |
896 | up_read(¤t->mm->mmap_sem); | |
d19cf32f | 897 | |
0a18d7b5 AC |
898 | /* check the number of pages locked - if not all then exit with error */ |
899 | if (result != num_pages) { | |
900 | dbg("SEP Driver: not all pages locked by get_user_pages\n"); | |
d19cf32f | 901 | |
0a18d7b5 AC |
902 | error = -ENOMEM; |
903 | goto end_function_with_error2; | |
904 | } | |
d19cf32f | 905 | |
0a18d7b5 AC |
906 | /* flush the cache */ |
907 | for (count = 0; count < num_pages; count++) | |
908 | flush_dcache_page(page_array[count]); | |
d19cf32f | 909 | |
0a18d7b5 AC |
910 | /* set the start address of the first page - app data may start not at |
911 | the beginning of the page */ | |
912 | lli_array[0].physical_address = ((unsigned long) page_to_phys(page_array[0])) + (app_virt_addr & (~PAGE_MASK)); | |
d19cf32f | 913 | |
0a18d7b5 AC |
914 | /* check that not all the data is in the first page only */ |
915 | if ((PAGE_SIZE - (app_virt_addr & (~PAGE_MASK))) >= data_size) | |
916 | lli_array[0].block_size = data_size; | |
917 | else | |
918 | lli_array[0].block_size = PAGE_SIZE - (app_virt_addr & (~PAGE_MASK)); | |
d19cf32f | 919 | |
0a18d7b5 AC |
920 | /* debug print */ |
921 | 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 | 922 | |
0a18d7b5 AC |
923 | /* go from the second page to the prev before last */ |
924 | for (count = 1; count < (num_pages - 1); count++) { | |
925 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
926 | lli_array[count].block_size = PAGE_SIZE; | |
d19cf32f | 927 | |
0a18d7b5 AC |
928 | 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); |
929 | } | |
d19cf32f | 930 | |
0a18d7b5 AC |
931 | /* if more then 1 pages locked - then update for the last page size needed */ |
932 | if (num_pages > 1) { | |
933 | /* update the address of the last page */ | |
934 | lli_array[count].physical_address = (unsigned long) page_to_phys(page_array[count]); | |
d19cf32f | 935 | |
0a18d7b5 AC |
936 | /* set the size of the last page */ |
937 | lli_array[count].block_size = (app_virt_addr + data_size) & (~PAGE_MASK); | |
d19cf32f | 938 | |
0a18d7b5 AC |
939 | if (lli_array[count].block_size == 0) { |
940 | dbg("app_virt_addr is %08lx\n", app_virt_addr); | |
941 | dbg("data_size is %lu\n", data_size); | |
942 | while (1); | |
943 | } | |
944 | edbg("lli_array[%lu].physical_address is %08lx, \ | |
945 | lli_array[%lu].block_size is %lu\n", count, lli_array[count].physical_address, count, lli_array[count].block_size); | |
cd1bb431 MA |
946 | } |
947 | ||
0a18d7b5 AC |
948 | /* set output params */ |
949 | *lli_array_ptr = lli_array; | |
950 | *num_pages_ptr = num_pages; | |
951 | *page_array_ptr = page_array; | |
952 | goto end_function; | |
953 | ||
954 | end_function_with_error2: | |
955 | /* release the cache */ | |
956 | for (count = 0; count < num_pages; count++) | |
957 | page_cache_release(page_array[count]); | |
958 | kfree(lli_array); | |
959 | end_function_with_error1: | |
960 | kfree(page_array); | |
961 | end_function: | |
962 | dbg("SEP Driver:<-------- sep_lock_user_pages end\n"); | |
d19cf32f | 963 | return 0; |
cd1bb431 MA |
964 | } |
965 | ||
0a18d7b5 | 966 | |
cd1bb431 MA |
967 | /* |
968 | this function calculates the size of data that can be inserted into the lli | |
969 | table from this array the condition is that either the table is full | |
970 | (all etnries are entered), or there are no more entries in the lli array | |
971 | */ | |
b10b483e | 972 | static unsigned long sep_calculate_lli_table_max_size(struct sep_lli_entry_t *lli_in_array_ptr, unsigned long num_array_entries) |
cd1bb431 | 973 | { |
f93e4bf9 | 974 | unsigned long table_data_size = 0; |
d19cf32f | 975 | unsigned long counter; |
cd1bb431 | 976 | |
d19cf32f AC |
977 | /* calculate the data in the out lli table if till we fill the whole |
978 | table or till the data has ended */ | |
979 | for (counter = 0; (counter < (SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP - 1)) && (counter < num_array_entries); counter++) | |
980 | table_data_size += lli_in_array_ptr[counter].block_size; | |
d19cf32f | 981 | return table_data_size; |
cd1bb431 MA |
982 | } |
983 | ||
984 | /* | |
985 | this functions builds ont lli table from the lli_array according to | |
986 | the given size of data | |
987 | */ | |
d19cf32f | 988 | 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 | 989 | { |
d19cf32f | 990 | unsigned long curr_table_data_size; |
d19cf32f AC |
991 | /* counter of lli array entry */ |
992 | unsigned long array_counter; | |
cd1bb431 | 993 | |
d19cf32f AC |
994 | dbg("SEP Driver:--------> sep_build_lli_table start\n"); |
995 | ||
996 | /* init currrent table data size and lli array entry counter */ | |
997 | curr_table_data_size = 0; | |
998 | array_counter = 0; | |
999 | *num_table_entries_ptr = 1; | |
1000 | ||
1001 | edbg("SEP Driver:table_data_size is %lu\n", table_data_size); | |
1002 | ||
1003 | /* fill the table till table size reaches the needed amount */ | |
1004 | while (curr_table_data_size < table_data_size) { | |
1005 | /* update the number of entries in table */ | |
1006 | (*num_table_entries_ptr)++; | |
1007 | ||
1008 | lli_table_ptr->physical_address = lli_array_ptr[array_counter].physical_address; | |
1009 | lli_table_ptr->block_size = lli_array_ptr[array_counter].block_size; | |
1010 | curr_table_data_size += lli_table_ptr->block_size; | |
1011 | ||
1012 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1013 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1014 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1015 | ||
1016 | /* check for overflow of the table data */ | |
1017 | if (curr_table_data_size > table_data_size) { | |
1018 | edbg("SEP Driver:curr_table_data_size > table_data_size\n"); | |
1019 | ||
1020 | /* update the size of block in the table */ | |
1021 | lli_table_ptr->block_size -= (curr_table_data_size - table_data_size); | |
1022 | ||
1023 | /* update the physical address in the lli array */ | |
1024 | lli_array_ptr[array_counter].physical_address += lli_table_ptr->block_size; | |
1025 | ||
1026 | /* update the block size left in the lli array */ | |
1027 | lli_array_ptr[array_counter].block_size = (curr_table_data_size - table_data_size); | |
1028 | } else | |
1029 | /* advance to the next entry in the lli_array */ | |
1030 | array_counter++; | |
1031 | ||
1032 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1033 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1034 | ||
1035 | /* move to the next entry in table */ | |
1036 | lli_table_ptr++; | |
1037 | } | |
1038 | ||
1039 | /* set the info entry to default */ | |
1040 | lli_table_ptr->physical_address = 0xffffffff; | |
1041 | lli_table_ptr->block_size = 0; | |
1042 | ||
1043 | edbg("SEP Driver:lli_table_ptr is %08lx\n", (unsigned long) lli_table_ptr); | |
1044 | edbg("SEP Driver:lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
1045 | edbg("SEP Driver:lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); | |
1046 | ||
d19cf32f AC |
1047 | /* set the output parameter */ |
1048 | *num_processed_entries_ptr += array_counter; | |
1049 | ||
1050 | edbg("SEP Driver:*num_processed_entries_ptr is %lu\n", *num_processed_entries_ptr); | |
d19cf32f | 1051 | dbg("SEP Driver:<-------- sep_build_lli_table end\n"); |
d19cf32f | 1052 | return; |
cd1bb431 MA |
1053 | } |
1054 | ||
1055 | /* | |
1056 | this function goes over the list of the print created tables and | |
1057 | prints all the data | |
1058 | */ | |
ca605bb6 | 1059 | 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 | 1060 | { |
d19cf32f | 1061 | unsigned long table_count; |
d19cf32f | 1062 | unsigned long entries_count; |
cd1bb431 | 1063 | |
d19cf32f | 1064 | dbg("SEP Driver:--------> sep_debug_print_lli_tables start\n"); |
cd1bb431 | 1065 | |
d19cf32f AC |
1066 | table_count = 1; |
1067 | while ((unsigned long) lli_table_ptr != 0xffffffff) { | |
1068 | edbg("SEP Driver: lli table %08lx, table_data_size is %lu\n", table_count, table_data_size); | |
1069 | edbg("SEP Driver: num_table_entries is %lu\n", num_table_entries); | |
cd1bb431 | 1070 | |
d19cf32f AC |
1071 | /* print entries of the table (without info entry) */ |
1072 | for (entries_count = 0; entries_count < num_table_entries; entries_count++, lli_table_ptr++) { | |
1073 | edbg("SEP Driver:lli_table_ptr address is %08lx\n", (unsigned long) lli_table_ptr); | |
1074 | edbg("SEP Driver:phys address is %08lx block size is %lu\n", lli_table_ptr->physical_address, lli_table_ptr->block_size); | |
1075 | } | |
cd1bb431 | 1076 | |
d19cf32f AC |
1077 | /* point to the info entry */ |
1078 | lli_table_ptr--; | |
cd1bb431 | 1079 | |
d19cf32f AC |
1080 | edbg("SEP Driver:phys lli_table_ptr->block_size is %lu\n", lli_table_ptr->block_size); |
1081 | edbg("SEP Driver:phys lli_table_ptr->physical_address is %08lx\n", lli_table_ptr->physical_address); | |
cd1bb431 | 1082 | |
cd1bb431 | 1083 | |
d19cf32f AC |
1084 | table_data_size = lli_table_ptr->block_size & 0xffffff; |
1085 | num_table_entries = (lli_table_ptr->block_size >> 24) & 0xff; | |
1086 | lli_table_ptr = (struct sep_lli_entry_t *) | |
1087 | (lli_table_ptr->physical_address); | |
cd1bb431 | 1088 | |
d19cf32f | 1089 | 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 | 1090 | |
d19cf32f | 1091 | if ((unsigned long) lli_table_ptr != 0xffffffff) |
70ae04e6 | 1092 | lli_table_ptr = (struct sep_lli_entry_t *) sep_shared_bus_to_virt(sep, (unsigned long) lli_table_ptr); |
d19cf32f AC |
1093 | |
1094 | table_count++; | |
1095 | } | |
d19cf32f | 1096 | dbg("SEP Driver:<-------- sep_debug_print_lli_tables end\n"); |
cd1bb431 MA |
1097 | } |
1098 | ||
1099 | ||
1100 | /* | |
0a18d7b5 AC |
1101 | This function prepares only input DMA table for synhronic symmetric |
1102 | operations (HASH) | |
cd1bb431 | 1103 | */ |
ca605bb6 AC |
1104 | static int sep_prepare_input_dma_table(struct sep_device *sep, |
1105 | unsigned long app_virt_addr, | |
1106 | unsigned long data_size, | |
1107 | unsigned long block_size, | |
1108 | unsigned long *lli_table_ptr, | |
1109 | unsigned long *num_entries_ptr, | |
1110 | unsigned long *table_data_size_ptr, | |
1111 | bool isKernelVirtualAddress) | |
cd1bb431 | 1112 | { |
0a18d7b5 AC |
1113 | /* pointer to the info entry of the table - the last entry */ |
1114 | struct sep_lli_entry_t *info_entry_ptr; | |
1115 | /* array of pointers ot page */ | |
1116 | struct sep_lli_entry_t *lli_array_ptr; | |
1117 | /* points to the first entry to be processed in the lli_in_array */ | |
1118 | unsigned long current_entry; | |
1119 | /* num entries in the virtual buffer */ | |
1120 | unsigned long sep_lli_entries; | |
1121 | /* lli table pointer */ | |
1122 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1123 | /* the total data in one table */ | |
1124 | unsigned long table_data_size; | |
1125 | /* number of entries in lli table */ | |
1126 | unsigned long num_entries_in_table; | |
1127 | /* next table address */ | |
790cf1b9 | 1128 | void *lli_table_alloc_addr; |
0a18d7b5 | 1129 | unsigned long result; |
cd1bb431 | 1130 | |
0a18d7b5 | 1131 | dbg("SEP Driver:--------> sep_prepare_input_dma_table start\n"); |
d19cf32f | 1132 | |
0a18d7b5 AC |
1133 | edbg("SEP Driver:data_size is %lu\n", data_size); |
1134 | edbg("SEP Driver:block_size is %lu\n", block_size); | |
d19cf32f | 1135 | |
0a18d7b5 | 1136 | /* initialize the pages pointers */ |
ca605bb6 AC |
1137 | sep->in_page_array = 0; |
1138 | sep->in_num_pages = 0; | |
d19cf32f | 1139 | |
0a18d7b5 AC |
1140 | if (data_size == 0) { |
1141 | /* special case - created 2 entries table with zero data */ | |
70ae04e6 | 1142 | in_lli_table_ptr = (struct sep_lli_entry_t *) (sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES); |
790cf1b9 | 1143 | /* FIXME: Should the entry below not be for _bus */ |
70ae04e6 | 1144 | in_lli_table_ptr->physical_address = (unsigned long)sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
0a18d7b5 AC |
1145 | in_lli_table_ptr->block_size = 0; |
1146 | ||
1147 | in_lli_table_ptr++; | |
1148 | in_lli_table_ptr->physical_address = 0xFFFFFFFF; | |
1149 | in_lli_table_ptr->block_size = 0; | |
1150 | ||
70ae04e6 | 1151 | *lli_table_ptr = sep->shared_bus + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
0a18d7b5 AC |
1152 | *num_entries_ptr = 2; |
1153 | *table_data_size_ptr = 0; | |
d19cf32f | 1154 | |
d19cf32f | 1155 | goto end_function; |
cd1bb431 | 1156 | } |
cd1bb431 | 1157 | |
0a18d7b5 AC |
1158 | /* check if the pages are in Kernel Virtual Address layout */ |
1159 | if (isKernelVirtualAddress == true) | |
1160 | /* lock the pages of the kernel buffer and translate them to pages */ | |
ca605bb6 | 1161 | result = sep_lock_kernel_pages(sep, app_virt_addr, data_size, &sep->in_num_pages, &lli_array_ptr, &sep->in_page_array); |
0a18d7b5 AC |
1162 | else |
1163 | /* lock the pages of the user buffer and translate them to pages */ | |
ca605bb6 | 1164 | result = sep_lock_user_pages(sep, app_virt_addr, data_size, &sep->in_num_pages, &lli_array_ptr, &sep->in_page_array); |
cd1bb431 | 1165 | |
0a18d7b5 AC |
1166 | if (result) |
1167 | return result; | |
cd1bb431 | 1168 | |
ca605bb6 | 1169 | edbg("SEP Driver:output sep->in_num_pages is %lu\n", sep->in_num_pages); |
cd1bb431 | 1170 | |
0a18d7b5 AC |
1171 | current_entry = 0; |
1172 | info_entry_ptr = 0; | |
ca605bb6 | 1173 | sep_lli_entries = sep->in_num_pages; |
d19cf32f | 1174 | |
0a18d7b5 | 1175 | /* initiate to point after the message area */ |
70ae04e6 | 1176 | lli_table_alloc_addr = sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
d19cf32f | 1177 | |
0a18d7b5 AC |
1178 | /* loop till all the entries in in array are not processed */ |
1179 | while (current_entry < sep_lli_entries) { | |
1180 | /* set the new input and output tables */ | |
1181 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
d19cf32f | 1182 | |
0a18d7b5 | 1183 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
d19cf32f | 1184 | |
0a18d7b5 AC |
1185 | /* calculate the maximum size of data for input table */ |
1186 | table_data_size = sep_calculate_lli_table_max_size(&lli_array_ptr[current_entry], (sep_lli_entries - current_entry)); | |
d19cf32f | 1187 | |
0a18d7b5 AC |
1188 | /* now calculate the table size so that it will be module block size */ |
1189 | table_data_size = (table_data_size / block_size) * block_size; | |
d19cf32f | 1190 | |
0a18d7b5 | 1191 | edbg("SEP Driver:output table_data_size is %lu\n", table_data_size); |
d19cf32f | 1192 | |
0a18d7b5 AC |
1193 | /* construct input lli table */ |
1194 | sep_build_lli_table(&lli_array_ptr[current_entry], in_lli_table_ptr, ¤t_entry, &num_entries_in_table, table_data_size); | |
d19cf32f | 1195 | |
0a18d7b5 AC |
1196 | if (info_entry_ptr == 0) { |
1197 | /* set the output parameters to physical addresses */ | |
70ae04e6 | 1198 | *lli_table_ptr = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 AC |
1199 | *num_entries_ptr = num_entries_in_table; |
1200 | *table_data_size_ptr = table_data_size; | |
d19cf32f | 1201 | |
0a18d7b5 AC |
1202 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_ptr); |
1203 | } else { | |
1204 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1205 | info_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 | 1206 | info_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); |
d19cf32f | 1207 | } |
0a18d7b5 AC |
1208 | |
1209 | /* save the pointer to the info entry of the current tables */ | |
1210 | info_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
d19cf32f AC |
1211 | } |
1212 | ||
0a18d7b5 | 1213 | /* print input tables */ |
ca605bb6 | 1214 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1215 | sep_shared_bus_to_virt(sep, *lli_table_ptr), *num_entries_ptr, *table_data_size_ptr); |
d19cf32f | 1216 | |
0a18d7b5 AC |
1217 | /* the array of the pages */ |
1218 | kfree(lli_array_ptr); | |
f93e4bf9 | 1219 | end_function: |
0a18d7b5 | 1220 | dbg("SEP Driver:<-------- sep_prepare_input_dma_table end\n"); |
d19cf32f | 1221 | return 0; |
0a18d7b5 | 1222 | |
cd1bb431 MA |
1223 | } |
1224 | ||
1225 | /* | |
0a18d7b5 AC |
1226 | This function creates the input and output dma tables for |
1227 | symmetric operations (AES/DES) according to the block size from LLI arays | |
cd1bb431 | 1228 | */ |
ca605bb6 AC |
1229 | static int sep_construct_dma_tables_from_lli(struct sep_device *sep, |
1230 | struct sep_lli_entry_t *lli_in_array, | |
0a18d7b5 AC |
1231 | unsigned long sep_in_lli_entries, |
1232 | struct sep_lli_entry_t *lli_out_array, | |
1233 | unsigned long sep_out_lli_entries, | |
1234 | 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 | 1235 | { |
790cf1b9 AC |
1236 | /* points to the area where next lli table can be allocated: keep void * |
1237 | as there is pointer scaling to fix otherwise */ | |
1238 | void *lli_table_alloc_addr; | |
0a18d7b5 AC |
1239 | /* input lli table */ |
1240 | struct sep_lli_entry_t *in_lli_table_ptr; | |
1241 | /* output lli table */ | |
1242 | struct sep_lli_entry_t *out_lli_table_ptr; | |
1243 | /* pointer to the info entry of the table - the last entry */ | |
1244 | struct sep_lli_entry_t *info_in_entry_ptr; | |
1245 | /* pointer to the info entry of the table - the last entry */ | |
1246 | struct sep_lli_entry_t *info_out_entry_ptr; | |
1247 | /* points to the first entry to be processed in the lli_in_array */ | |
1248 | unsigned long current_in_entry; | |
1249 | /* points to the first entry to be processed in the lli_out_array */ | |
1250 | unsigned long current_out_entry; | |
1251 | /* max size of the input table */ | |
1252 | unsigned long in_table_data_size; | |
1253 | /* max size of the output table */ | |
1254 | unsigned long out_table_data_size; | |
1255 | /* flag te signifies if this is the first tables build from the arrays */ | |
1256 | unsigned long first_table_flag; | |
1257 | /* the data size that should be in table */ | |
1258 | unsigned long table_data_size; | |
1259 | /* number of etnries in the input table */ | |
1260 | unsigned long num_entries_in_table; | |
1261 | /* number of etnries in the output table */ | |
1262 | unsigned long num_entries_out_table; | |
cd1bb431 | 1263 | |
0a18d7b5 | 1264 | dbg("SEP Driver:--------> sep_construct_dma_tables_from_lli start\n"); |
d19cf32f | 1265 | |
0a18d7b5 | 1266 | /* initiate to pint after the message area */ |
70ae04e6 | 1267 | lli_table_alloc_addr = sep->shared_addr + SEP_DRIVER_SYNCHRONIC_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
d19cf32f | 1268 | |
0a18d7b5 AC |
1269 | current_in_entry = 0; |
1270 | current_out_entry = 0; | |
1271 | first_table_flag = 1; | |
1272 | info_in_entry_ptr = 0; | |
1273 | info_out_entry_ptr = 0; | |
d19cf32f | 1274 | |
0a18d7b5 AC |
1275 | /* loop till all the entries in in array are not processed */ |
1276 | while (current_in_entry < sep_in_lli_entries) { | |
1277 | /* set the new input and output tables */ | |
1278 | in_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 1279 | |
0a18d7b5 | 1280 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
cd1bb431 | 1281 | |
0a18d7b5 AC |
1282 | /* set the first output tables */ |
1283 | out_lli_table_ptr = (struct sep_lli_entry_t *) lli_table_alloc_addr; | |
cd1bb431 | 1284 | |
0a18d7b5 | 1285 | lli_table_alloc_addr += sizeof(struct sep_lli_entry_t) * SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP; |
d19cf32f | 1286 | |
0a18d7b5 AC |
1287 | /* calculate the maximum size of data for input table */ |
1288 | in_table_data_size = sep_calculate_lli_table_max_size(&lli_in_array[current_in_entry], (sep_in_lli_entries - current_in_entry)); | |
d19cf32f | 1289 | |
0a18d7b5 AC |
1290 | /* calculate the maximum size of data for output table */ |
1291 | out_table_data_size = sep_calculate_lli_table_max_size(&lli_out_array[current_out_entry], (sep_out_lli_entries - current_out_entry)); | |
d19cf32f | 1292 | |
0a18d7b5 AC |
1293 | edbg("SEP Driver:in_table_data_size is %lu\n", in_table_data_size); |
1294 | edbg("SEP Driver:out_table_data_size is %lu\n", out_table_data_size); | |
cd1bb431 | 1295 | |
0a18d7b5 AC |
1296 | /* check where the data is smallest */ |
1297 | table_data_size = in_table_data_size; | |
1298 | if (table_data_size > out_table_data_size) | |
1299 | table_data_size = out_table_data_size; | |
cd1bb431 | 1300 | |
0a18d7b5 AC |
1301 | /* now calculate the table size so that it will be module block size */ |
1302 | table_data_size = (table_data_size / block_size) * block_size; | |
cd1bb431 | 1303 | |
0a18d7b5 AC |
1304 | dbg("SEP Driver:table_data_size is %lu\n", table_data_size); |
1305 | ||
1306 | /* construct input lli table */ | |
1307 | sep_build_lli_table(&lli_in_array[current_in_entry], in_lli_table_ptr, ¤t_in_entry, &num_entries_in_table, table_data_size); | |
1308 | ||
1309 | /* construct output lli table */ | |
1310 | sep_build_lli_table(&lli_out_array[current_out_entry], out_lli_table_ptr, ¤t_out_entry, &num_entries_out_table, table_data_size); | |
1311 | ||
1312 | /* if info entry is null - this is the first table built */ | |
1313 | if (info_in_entry_ptr == 0) { | |
1314 | /* set the output parameters to physical addresses */ | |
70ae04e6 | 1315 | *lli_table_in_ptr = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 | 1316 | *in_num_entries_ptr = num_entries_in_table; |
70ae04e6 | 1317 | *lli_table_out_ptr = sep_shared_virt_to_bus(sep, out_lli_table_ptr); |
0a18d7b5 AC |
1318 | *out_num_entries_ptr = num_entries_out_table; |
1319 | *table_data_size_ptr = table_data_size; | |
1320 | ||
1321 | edbg("SEP Driver:output lli_table_in_ptr is %08lx\n", *lli_table_in_ptr); | |
1322 | edbg("SEP Driver:output lli_table_out_ptr is %08lx\n", *lli_table_out_ptr); | |
1323 | } else { | |
1324 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1325 | info_in_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, in_lli_table_ptr); |
0a18d7b5 AC |
1326 | info_in_entry_ptr->block_size = ((num_entries_in_table) << 24) | (table_data_size); |
1327 | ||
1328 | /* update the info entry of the previous in table */ | |
70ae04e6 | 1329 | info_out_entry_ptr->physical_address = sep_shared_virt_to_bus(sep, out_lli_table_ptr); |
0a18d7b5 | 1330 | info_out_entry_ptr->block_size = ((num_entries_out_table) << 24) | (table_data_size); |
d19cf32f AC |
1331 | } |
1332 | ||
0a18d7b5 AC |
1333 | /* save the pointer to the info entry of the current tables */ |
1334 | info_in_entry_ptr = in_lli_table_ptr + num_entries_in_table - 1; | |
1335 | info_out_entry_ptr = out_lli_table_ptr + num_entries_out_table - 1; | |
1336 | ||
1337 | edbg("SEP Driver:output num_entries_out_table is %lu\n", (unsigned long) num_entries_out_table); | |
1338 | edbg("SEP Driver:output info_in_entry_ptr is %lu\n", (unsigned long) info_in_entry_ptr); | |
1339 | edbg("SEP Driver:output info_out_entry_ptr is %lu\n", (unsigned long) info_out_entry_ptr); | |
d19cf32f | 1340 | } |
0a18d7b5 AC |
1341 | |
1342 | /* print input tables */ | |
ca605bb6 | 1343 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1344 | sep_shared_bus_to_virt(sep, *lli_table_in_ptr), *in_num_entries_ptr, *table_data_size_ptr); |
0a18d7b5 | 1345 | /* print output tables */ |
ca605bb6 | 1346 | sep_debug_print_lli_tables(sep, (struct sep_lli_entry_t *) |
70ae04e6 | 1347 | sep_shared_bus_to_virt(sep, *lli_table_out_ptr), *out_num_entries_ptr, *table_data_size_ptr); |
0a18d7b5 | 1348 | dbg("SEP Driver:<-------- sep_construct_dma_tables_from_lli end\n"); |
d19cf32f | 1349 | return 0; |
cd1bb431 MA |
1350 | } |
1351 | ||
0a18d7b5 | 1352 | |
cd1bb431 | 1353 | /* |
0a18d7b5 AC |
1354 | This function builds input and output DMA tables for synhronic |
1355 | symmetric operations (AES, DES). It also checks that each table | |
1356 | is of the modular block size | |
cd1bb431 | 1357 | */ |
ca605bb6 AC |
1358 | static int sep_prepare_input_output_dma_table(struct sep_device *sep, |
1359 | unsigned long app_virt_in_addr, | |
0a18d7b5 AC |
1360 | unsigned long app_virt_out_addr, |
1361 | unsigned long data_size, | |
1362 | unsigned long block_size, | |
1363 | 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 | 1364 | { |
0a18d7b5 AC |
1365 | /* array of pointers of page */ |
1366 | struct sep_lli_entry_t *lli_in_array; | |
1367 | /* array of pointers of page */ | |
1368 | struct sep_lli_entry_t *lli_out_array; | |
1369 | int result = 0; | |
cd1bb431 | 1370 | |
0a18d7b5 AC |
1371 | dbg("SEP Driver:--------> sep_prepare_input_output_dma_table start\n"); |
1372 | ||
1373 | /* initialize the pages pointers */ | |
ca605bb6 AC |
1374 | sep->in_page_array = 0; |
1375 | sep->out_page_array = 0; | |
0a18d7b5 AC |
1376 | |
1377 | /* check if the pages are in Kernel Virtual Address layout */ | |
1378 | if (isKernelVirtualAddress == true) { | |
1379 | /* lock the pages of the kernel buffer and translate them to pages */ | |
ca605bb6 | 1380 | 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 |
1381 | if (result) { |
1382 | edbg("SEP Driver: sep_lock_kernel_pages for input virtual buffer failed\n"); | |
1383 | goto end_function; | |
d19cf32f AC |
1384 | } |
1385 | } else { | |
0a18d7b5 | 1386 | /* lock the pages of the user buffer and translate them to pages */ |
ca605bb6 | 1387 | 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 |
1388 | if (result) { |
1389 | edbg("SEP Driver: sep_lock_user_pages for input virtual buffer failed\n"); | |
1390 | goto end_function; | |
1391 | } | |
cd1bb431 | 1392 | } |
cd1bb431 | 1393 | |
0a18d7b5 | 1394 | if (isKernelVirtualAddress == true) { |
ca605bb6 | 1395 | 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 |
1396 | if (result) { |
1397 | edbg("SEP Driver: sep_lock_kernel_pages for output virtual buffer failed\n"); | |
1398 | goto end_function_with_error1; | |
1399 | } | |
1400 | } else { | |
ca605bb6 | 1401 | 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 |
1402 | if (result) { |
1403 | edbg("SEP Driver: sep_lock_user_pages for output virtual buffer failed\n"); | |
1404 | goto end_function_with_error1; | |
1405 | } | |
1406 | } | |
ca605bb6 AC |
1407 | edbg("sep->in_num_pages is %lu\n", sep->in_num_pages); |
1408 | edbg("sep->out_num_pages is %lu\n", sep->out_num_pages); | |
0a18d7b5 AC |
1409 | edbg("SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP is %x\n", SEP_DRIVER_ENTRIES_PER_TABLE_IN_SEP); |
1410 | ||
1411 | ||
1412 | /* call the fucntion that creates table from the lli arrays */ | |
ca605bb6 | 1413 | 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 |
1414 | if (result) { |
1415 | edbg("SEP Driver: sep_construct_dma_tables_from_lli failed\n"); | |
1416 | goto end_function_with_error2; | |
1417 | } | |
1418 | ||
1419 | /* fall through - free the lli entry arrays */ | |
1420 | dbg("in_num_entries_ptr is %08lx\n", *in_num_entries_ptr); | |
1421 | dbg("out_num_entries_ptr is %08lx\n", *out_num_entries_ptr); | |
1422 | dbg("table_data_size_ptr is %08lx\n", *table_data_size_ptr); | |
1423 | end_function_with_error2: | |
1424 | kfree(lli_out_array); | |
1425 | end_function_with_error1: | |
1426 | kfree(lli_in_array); | |
1427 | end_function: | |
1428 | dbg("SEP Driver:<-------- sep_prepare_input_output_dma_table end result = %d\n", (int) result); | |
1429 | return result; | |
cd1bb431 | 1430 | |
cd1bb431 MA |
1431 | } |
1432 | ||
1433 | /* | |
0a18d7b5 AC |
1434 | this function handles tha request for creation of the DMA table |
1435 | for the synchronic symmetric operations (AES,DES) | |
cd1bb431 | 1436 | */ |
ca605bb6 AC |
1437 | static int sep_create_sync_dma_tables_handler(struct sep_device *sep, |
1438 | unsigned long arg) | |
cd1bb431 | 1439 | { |
0a18d7b5 AC |
1440 | int error; |
1441 | /* command arguments */ | |
1442 | struct sep_driver_build_sync_table_t command_args; | |
cd1bb431 | 1443 | |
0a18d7b5 | 1444 | dbg("SEP Driver:--------> sep_create_sync_dma_tables_handler start\n"); |
cd1bb431 | 1445 | |
0a18d7b5 AC |
1446 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_sync_table_t)); |
1447 | if (error) | |
1448 | goto end_function; | |
cd1bb431 | 1449 | |
0a18d7b5 AC |
1450 | edbg("app_in_address is %08lx\n", command_args.app_in_address); |
1451 | edbg("app_out_address is %08lx\n", command_args.app_out_address); | |
1452 | edbg("data_size is %lu\n", command_args.data_in_size); | |
1453 | edbg("block_size is %lu\n", command_args.block_size); | |
cd1bb431 | 1454 | |
0a18d7b5 AC |
1455 | /* check if we need to build only input table or input/output */ |
1456 | if (command_args.app_out_address) | |
1457 | /* prepare input and output tables */ | |
ca605bb6 AC |
1458 | error = sep_prepare_input_output_dma_table(sep, |
1459 | command_args.app_in_address, | |
0a18d7b5 AC |
1460 | command_args.app_out_address, |
1461 | command_args.data_in_size, | |
1462 | command_args.block_size, | |
1463 | &command_args.in_table_address, | |
1464 | &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); | |
1465 | else | |
1466 | /* prepare input tables */ | |
ca605bb6 AC |
1467 | error = sep_prepare_input_dma_table(sep, |
1468 | command_args.app_in_address, | |
0a18d7b5 AC |
1469 | 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); |
1470 | ||
1471 | if (error) | |
1472 | goto end_function; | |
1473 | /* copy to user */ | |
51faa9d2 AC |
1474 | if (copy_to_user((void *) arg, (void *) &command_args, sizeof(struct sep_driver_build_sync_table_t))) |
1475 | error = -EFAULT; | |
0a18d7b5 AC |
1476 | end_function: |
1477 | dbg("SEP Driver:<-------- sep_create_sync_dma_tables_handler end\n"); | |
1478 | return error; | |
cd1bb431 MA |
1479 | } |
1480 | ||
1481 | /* | |
0a18d7b5 | 1482 | this function handles the request for freeing dma table for synhronic actions |
cd1bb431 | 1483 | */ |
ca605bb6 | 1484 | static int sep_free_dma_table_data_handler(struct sep_device *sep) |
cd1bb431 | 1485 | { |
0a18d7b5 | 1486 | dbg("SEP Driver:--------> sep_free_dma_table_data_handler start\n"); |
cd1bb431 | 1487 | |
0a18d7b5 | 1488 | /* free input pages array */ |
ca605bb6 | 1489 | sep_free_dma_pages(sep->in_page_array, sep->in_num_pages, 0); |
cd1bb431 | 1490 | |
0a18d7b5 | 1491 | /* free output pages array if needed */ |
ca605bb6 AC |
1492 | if (sep->out_page_array) |
1493 | sep_free_dma_pages(sep->out_page_array, sep->out_num_pages, 1); | |
cd1bb431 | 1494 | |
0a18d7b5 | 1495 | /* reset all the values */ |
ca605bb6 AC |
1496 | sep->in_page_array = 0; |
1497 | sep->out_page_array = 0; | |
1498 | sep->in_num_pages = 0; | |
1499 | sep->out_num_pages = 0; | |
0a18d7b5 AC |
1500 | dbg("SEP Driver:<-------- sep_free_dma_table_data_handler end\n"); |
1501 | return 0; | |
1502 | } | |
cd1bb431 MA |
1503 | |
1504 | /* | |
0a18d7b5 | 1505 | this function find a space for the new flow dma table |
cd1bb431 | 1506 | */ |
ca605bb6 AC |
1507 | static int sep_find_free_flow_dma_table_space(struct sep_device *sep, |
1508 | unsigned long **table_address_ptr) | |
cd1bb431 | 1509 | { |
0a18d7b5 AC |
1510 | int error = 0; |
1511 | /* pointer to the id field of the flow dma table */ | |
1512 | unsigned long *start_table_ptr; | |
790cf1b9 AC |
1513 | /* Do not make start_addr unsigned long * unless fixing the offset |
1514 | computations ! */ | |
1515 | void *flow_dma_area_start_addr; | |
1516 | unsigned long *flow_dma_area_end_addr; | |
0a18d7b5 AC |
1517 | /* maximum table size in words */ |
1518 | unsigned long table_size_in_words; | |
cd1bb431 | 1519 | |
0a18d7b5 | 1520 | /* find the start address of the flow DMA table area */ |
70ae04e6 | 1521 | flow_dma_area_start_addr = sep->shared_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_OFFSET_IN_BYTES; |
cd1bb431 | 1522 | |
0a18d7b5 AC |
1523 | /* set end address of the flow table area */ |
1524 | flow_dma_area_end_addr = flow_dma_area_start_addr + SEP_DRIVER_FLOW_DMA_TABLES_AREA_SIZE_IN_BYTES; | |
cd1bb431 | 1525 | |
0a18d7b5 AC |
1526 | /* set table size in words */ |
1527 | table_size_in_words = SEP_DRIVER_MAX_FLOW_NUM_ENTRIES_IN_TABLE * (sizeof(struct sep_lli_entry_t) / sizeof(long)) + 2; | |
d19cf32f | 1528 | |
0a18d7b5 | 1529 | /* set the pointer to the start address of DMA area */ |
790cf1b9 | 1530 | start_table_ptr = flow_dma_area_start_addr; |
cd1bb431 | 1531 | |
0a18d7b5 | 1532 | /* find the space for the next table */ |
790cf1b9 | 1533 | while (((*start_table_ptr & 0x7FFFFFFF) != 0) && start_table_ptr < flow_dma_area_end_addr) |
0a18d7b5 | 1534 | start_table_ptr += table_size_in_words; |
cd1bb431 | 1535 | |
0a18d7b5 | 1536 | /* check if we reached the end of floa tables area */ |
790cf1b9 | 1537 | if (start_table_ptr >= flow_dma_area_end_addr) |
0a18d7b5 AC |
1538 | error = -1; |
1539 | else | |
1540 | *table_address_ptr = start_table_ptr; | |
cd1bb431 | 1541 | |
d19cf32f | 1542 | return error; |
cd1bb431 MA |
1543 | } |
1544 | ||
1545 | /* | |
0a18d7b5 AC |
1546 | This function creates one DMA table for flow and returns its data, |
1547 | and pointer to its info entry | |
cd1bb431 | 1548 | */ |
ca605bb6 AC |
1549 | static int sep_prepare_one_flow_dma_table(struct sep_device *sep, |
1550 | unsigned long virt_buff_addr, | |
1551 | unsigned long virt_buff_size, | |
1552 | struct sep_lli_entry_t *table_data, | |
1553 | struct sep_lli_entry_t **info_entry_ptr, | |
1554 | struct sep_flow_context_t *flow_data_ptr, | |
1555 | bool isKernelVirtualAddress) | |
cd1bb431 | 1556 | { |
d19cf32f | 1557 | int error; |
0a18d7b5 AC |
1558 | /* the range in pages */ |
1559 | unsigned long lli_array_size; | |
1560 | struct sep_lli_entry_t *lli_array; | |
1561 | struct sep_lli_entry_t *flow_dma_table_entry_ptr; | |
1562 | unsigned long *start_dma_table_ptr; | |
1563 | /* total table data counter */ | |
1564 | unsigned long dma_table_data_count; | |
1565 | /* pointer that will keep the pointer to the pages of the virtual buffer */ | |
1566 | struct page **page_array_ptr; | |
1567 | unsigned long entry_count; | |
cd1bb431 | 1568 | |
0a18d7b5 | 1569 | /* find the space for the new table */ |
ca605bb6 | 1570 | error = sep_find_free_flow_dma_table_space(sep, &start_dma_table_ptr); |
d19cf32f AC |
1571 | if (error) |
1572 | goto end_function; | |
cd1bb431 | 1573 | |
0a18d7b5 AC |
1574 | /* check if the pages are in Kernel Virtual Address layout */ |
1575 | if (isKernelVirtualAddress == true) | |
1576 | /* lock kernel buffer in the memory */ | |
ca605bb6 | 1577 | error = sep_lock_kernel_pages(sep, virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); |
0a18d7b5 AC |
1578 | else |
1579 | /* lock user buffer in the memory */ | |
ca605bb6 | 1580 | error = sep_lock_user_pages(sep, virt_buff_addr, virt_buff_size, &lli_array_size, &lli_array, &page_array_ptr); |
cd1bb431 | 1581 | |
d19cf32f AC |
1582 | if (error) |
1583 | goto end_function; | |
cd1bb431 | 1584 | |
0a18d7b5 AC |
1585 | /* set the pointer to page array at the beginning of table - this table is |
1586 | now considered taken */ | |
1587 | *start_dma_table_ptr = lli_array_size; | |
cd1bb431 | 1588 | |
0a18d7b5 AC |
1589 | /* point to the place of the pages pointers of the table */ |
1590 | start_dma_table_ptr++; | |
cd1bb431 | 1591 | |
0a18d7b5 AC |
1592 | /* set the pages pointer */ |
1593 | *start_dma_table_ptr = (unsigned long) page_array_ptr; | |
1594 | ||
1595 | /* set the pointer to the first entry */ | |
1596 | flow_dma_table_entry_ptr = (struct sep_lli_entry_t *) (++start_dma_table_ptr); | |
1597 | ||
1598 | /* now create the entries for table */ | |
1599 | for (dma_table_data_count = entry_count = 0; entry_count < lli_array_size; entry_count++) { | |
1600 | flow_dma_table_entry_ptr->physical_address = lli_array[entry_count].physical_address; | |
1601 | ||
1602 | flow_dma_table_entry_ptr->block_size = lli_array[entry_count].block_size; | |
1603 | ||
1604 | /* set the total data of a table */ | |
1605 | dma_table_data_count += lli_array[entry_count].block_size; | |
1606 | ||
1607 | flow_dma_table_entry_ptr++; | |
d19cf32f | 1608 | } |
0a18d7b5 AC |
1609 | |
1610 | /* set the physical address */ | |
1611 | table_data->physical_address = virt_to_phys(start_dma_table_ptr); | |
1612 | ||
1613 | /* set the num_entries and total data size */ | |
1614 | table_data->block_size = ((lli_array_size + 1) << SEP_NUM_ENTRIES_OFFSET_IN_BITS) | (dma_table_data_count); | |
1615 | ||
1616 | /* set the info entry */ | |
1617 | flow_dma_table_entry_ptr->physical_address = 0xffffffff; | |
1618 | flow_dma_table_entry_ptr->block_size = 0; | |
1619 | ||
1620 | /* set the pointer to info entry */ | |
1621 | *info_entry_ptr = flow_dma_table_entry_ptr; | |
1622 | ||
1623 | /* the array of the lli entries */ | |
1624 | kfree(lli_array); | |
f93e4bf9 | 1625 | end_function: |
d19cf32f | 1626 | return error; |
cd1bb431 MA |
1627 | } |
1628 | ||
0a18d7b5 AC |
1629 | |
1630 | ||
cd1bb431 | 1631 | /* |
0a18d7b5 AC |
1632 | This function creates a list of tables for flow and returns the data for |
1633 | the first and last tables of the list | |
cd1bb431 | 1634 | */ |
ca605bb6 AC |
1635 | static int sep_prepare_flow_dma_tables(struct sep_device *sep, |
1636 | unsigned long num_virtual_buffers, | |
1637 | 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 | 1638 | { |
d19cf32f | 1639 | int error; |
0a18d7b5 AC |
1640 | unsigned long virt_buff_addr; |
1641 | unsigned long virt_buff_size; | |
1642 | struct sep_lli_entry_t table_data; | |
1643 | struct sep_lli_entry_t *info_entry_ptr; | |
1644 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
1645 | unsigned long i; | |
cd1bb431 | 1646 | |
0a18d7b5 AC |
1647 | /* init vars */ |
1648 | error = 0; | |
1649 | prev_info_entry_ptr = 0; | |
cd1bb431 | 1650 | |
0a18d7b5 AC |
1651 | /* init the first table to default */ |
1652 | table_data.physical_address = 0xffffffff; | |
1653 | first_table_data_ptr->physical_address = 0xffffffff; | |
1654 | table_data.block_size = 0; | |
cd1bb431 | 1655 | |
0a18d7b5 AC |
1656 | for (i = 0; i < num_virtual_buffers; i++) { |
1657 | /* get the virtual buffer address */ | |
1658 | error = get_user(virt_buff_addr, &first_buff_addr); | |
1659 | if (error) | |
1660 | goto end_function; | |
cd1bb431 | 1661 | |
0a18d7b5 AC |
1662 | /* get the virtual buffer size */ |
1663 | first_buff_addr++; | |
1664 | error = get_user(virt_buff_size, &first_buff_addr); | |
1665 | if (error) | |
1666 | goto end_function; | |
cd1bb431 | 1667 | |
0a18d7b5 AC |
1668 | /* advance the address to point to the next pair of address|size */ |
1669 | first_buff_addr++; | |
cd1bb431 | 1670 | |
0a18d7b5 | 1671 | /* now prepare the one flow LLI table from the data */ |
ca605bb6 | 1672 | 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 |
1673 | if (error) |
1674 | goto end_function; | |
1675 | ||
1676 | if (i == 0) { | |
1677 | /* if this is the first table - save it to return to the user | |
1678 | application */ | |
1679 | *first_table_data_ptr = table_data; | |
1680 | ||
1681 | /* set the pointer to info entry */ | |
1682 | prev_info_entry_ptr = info_entry_ptr; | |
1683 | } else { | |
1684 | /* not first table - the previous table info entry should | |
1685 | be updated */ | |
1686 | prev_info_entry_ptr->block_size = (0x1 << SEP_INT_FLAG_OFFSET_IN_BITS) | (table_data.block_size); | |
1687 | ||
1688 | /* set the pointer to info entry */ | |
1689 | prev_info_entry_ptr = info_entry_ptr; | |
1690 | } | |
d19cf32f | 1691 | } |
cd1bb431 | 1692 | |
0a18d7b5 AC |
1693 | /* set the last table data */ |
1694 | *last_table_data_ptr = table_data; | |
f93e4bf9 | 1695 | end_function: |
d19cf32f | 1696 | return error; |
cd1bb431 MA |
1697 | } |
1698 | ||
cd1bb431 | 1699 | /* |
0a18d7b5 AC |
1700 | this function goes over all the flow tables connected to the given |
1701 | table and deallocate them | |
cd1bb431 | 1702 | */ |
0a18d7b5 | 1703 | static void sep_deallocated_flow_tables(struct sep_lli_entry_t *first_table_ptr) |
cd1bb431 | 1704 | { |
0a18d7b5 AC |
1705 | /* id pointer */ |
1706 | unsigned long *table_ptr; | |
1707 | /* end address of the flow dma area */ | |
1708 | unsigned long num_entries; | |
1709 | unsigned long num_pages; | |
1710 | struct page **pages_ptr; | |
1711 | /* maximum table size in words */ | |
1712 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1713 | |
0a18d7b5 AC |
1714 | /* set the pointer to the first table */ |
1715 | table_ptr = (unsigned long *) first_table_ptr->physical_address; | |
cd1bb431 | 1716 | |
0a18d7b5 AC |
1717 | /* set the num of entries */ |
1718 | num_entries = (first_table_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) | |
1719 | & SEP_NUM_ENTRIES_MASK; | |
cd1bb431 | 1720 | |
0a18d7b5 AC |
1721 | /* go over all the connected tables */ |
1722 | while (*table_ptr != 0xffffffff) { | |
1723 | /* get number of pages */ | |
1724 | num_pages = *(table_ptr - 2); | |
d19cf32f | 1725 | |
0a18d7b5 AC |
1726 | /* get the pointer to the pages */ |
1727 | pages_ptr = (struct page **) (*(table_ptr - 1)); | |
cd1bb431 | 1728 | |
0a18d7b5 AC |
1729 | /* free the pages */ |
1730 | sep_free_dma_pages(pages_ptr, num_pages, 1); | |
1731 | ||
1732 | /* goto to the info entry */ | |
1733 | info_entry_ptr = ((struct sep_lli_entry_t *) table_ptr) + (num_entries - 1); | |
1734 | ||
1735 | table_ptr = (unsigned long *) info_entry_ptr->physical_address; | |
1736 | num_entries = (info_entry_ptr->block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1737 | } | |
1738 | ||
1739 | return; | |
cd1bb431 MA |
1740 | } |
1741 | ||
3cacf729 AC |
1742 | /** |
1743 | * sep_find_flow_context - find a flow | |
1744 | * @sep: the SEP we are working with | |
1745 | * @flow_id: flow identifier | |
1746 | * | |
1747 | * Returns a pointer the matching flow, or NULL if the flow does not | |
1748 | * exist. | |
1749 | */ | |
ca605bb6 | 1750 | |
3cacf729 AC |
1751 | static struct sep_flow_context_t *sep_find_flow_context(struct sep_device *sep, |
1752 | unsigned long flow_id) | |
cd1bb431 | 1753 | { |
3cacf729 | 1754 | int count; |
0a18d7b5 | 1755 | /* |
3cacf729 AC |
1756 | * always search for flow with id default first - in case we |
1757 | * already started working on the flow there can be no situation | |
1758 | * when 2 flows are with default flag | |
0a18d7b5 AC |
1759 | */ |
1760 | for (count = 0; count < SEP_DRIVER_NUM_FLOWS; count++) { | |
3cacf729 AC |
1761 | if (sep->flows[count].flow_id == flow_id) |
1762 | return &sep->flows[count]; | |
0a18d7b5 | 1763 | } |
3cacf729 | 1764 | return NULL; |
cd1bb431 MA |
1765 | } |
1766 | ||
0a18d7b5 | 1767 | |
cd1bb431 MA |
1768 | /* |
1769 | this function handles the request to create the DMA tables for flow | |
1770 | */ | |
ca605bb6 AC |
1771 | static int sep_create_flow_dma_tables_handler(struct sep_device *sep, |
1772 | unsigned long arg) | |
cd1bb431 | 1773 | { |
d19cf32f | 1774 | int error; |
d19cf32f | 1775 | struct sep_driver_build_flow_table_t command_args; |
d19cf32f AC |
1776 | /* first table - output */ |
1777 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1778 | /* dma table data */ |
1779 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1780 | /* pointer to the info entry of the previuos DMA table */ |
1781 | struct sep_lli_entry_t *prev_info_entry_ptr; | |
d19cf32f AC |
1782 | /* pointer to the flow data strucutre */ |
1783 | struct sep_flow_context_t *flow_context_ptr; | |
cd1bb431 | 1784 | |
d19cf32f | 1785 | dbg("SEP Driver:--------> sep_create_flow_dma_tables_handler start\n"); |
cd1bb431 | 1786 | |
d19cf32f AC |
1787 | /* init variables */ |
1788 | prev_info_entry_ptr = 0; | |
1789 | first_table_data.physical_address = 0xffffffff; | |
cd1bb431 | 1790 | |
d19cf32f | 1791 | /* find the free structure for flow data */ |
727acb4f | 1792 | error = -EINVAL; |
3cacf729 AC |
1793 | flow_context_ptr = sep_find_flow_context(sep, SEP_FREE_FLOW_ID); |
1794 | if (flow_context_ptr == NULL) | |
d19cf32f | 1795 | goto end_function; |
cd1bb431 | 1796 | |
d19cf32f AC |
1797 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_build_flow_table_t)); |
1798 | if (error) | |
1799 | goto end_function; | |
cd1bb431 | 1800 | |
d19cf32f | 1801 | /* create flow tables */ |
ca605bb6 | 1802 | 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 |
1803 | if (error) |
1804 | goto end_function_with_error; | |
cd1bb431 | 1805 | |
d19cf32f AC |
1806 | /* check if flow is static */ |
1807 | if (!command_args.flow_type) | |
1808 | /* point the info entry of the last to the info entry of the first */ | |
1809 | last_table_data = first_table_data; | |
cd1bb431 | 1810 | |
d19cf32f AC |
1811 | /* set output params */ |
1812 | command_args.first_table_addr = first_table_data.physical_address; | |
1813 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1814 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1815 | |
d19cf32f AC |
1816 | /* send the parameters to user application */ |
1817 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_build_flow_table_t)); | |
1818 | if (error) | |
1819 | goto end_function_with_error; | |
cd1bb431 | 1820 | |
d19cf32f AC |
1821 | /* all the flow created - update the flow entry with temp id */ |
1822 | flow_context_ptr->flow_id = SEP_TEMP_FLOW_ID; | |
cd1bb431 | 1823 | |
d19cf32f AC |
1824 | /* set the processing tables data in the context */ |
1825 | if (command_args.input_output_flag == SEP_DRIVER_IN_FLAG) | |
1826 | flow_context_ptr->input_tables_in_process = first_table_data; | |
1827 | else | |
1828 | flow_context_ptr->output_tables_in_process = first_table_data; | |
cd1bb431 | 1829 | |
d19cf32f | 1830 | goto end_function; |
cd1bb431 | 1831 | |
f93e4bf9 | 1832 | end_function_with_error: |
d19cf32f AC |
1833 | /* free the allocated tables */ |
1834 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1835 | end_function: |
d19cf32f | 1836 | dbg("SEP Driver:<-------- sep_create_flow_dma_tables_handler end\n"); |
d19cf32f | 1837 | return error; |
cd1bb431 MA |
1838 | } |
1839 | ||
1840 | /* | |
ca605bb6 | 1841 | this function handles add tables to flow |
cd1bb431 | 1842 | */ |
ca605bb6 | 1843 | static int sep_add_flow_tables_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1844 | { |
d19cf32f | 1845 | int error; |
d19cf32f | 1846 | unsigned long num_entries; |
d19cf32f | 1847 | struct sep_driver_add_flow_table_t command_args; |
d19cf32f | 1848 | struct sep_flow_context_t *flow_context_ptr; |
d19cf32f AC |
1849 | /* first dma table data */ |
1850 | struct sep_lli_entry_t first_table_data; | |
d19cf32f AC |
1851 | /* last dma table data */ |
1852 | struct sep_lli_entry_t last_table_data; | |
d19cf32f AC |
1853 | /* pointer to the info entry of the current DMA table */ |
1854 | struct sep_lli_entry_t *info_entry_ptr; | |
cd1bb431 | 1855 | |
d19cf32f | 1856 | dbg("SEP Driver:--------> sep_add_flow_tables_handler start\n"); |
cd1bb431 | 1857 | |
d19cf32f AC |
1858 | /* get input parameters */ |
1859 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_flow_table_t)); | |
1860 | if (error) | |
1861 | goto end_function; | |
cd1bb431 | 1862 | |
d19cf32f | 1863 | /* find the flow structure for the flow id */ |
3cacf729 AC |
1864 | flow_context_ptr = sep_find_flow_context(sep, command_args.flow_id); |
1865 | if (flow_context_ptr == NULL) | |
d19cf32f | 1866 | goto end_function; |
cd1bb431 | 1867 | |
d19cf32f | 1868 | /* prepare the flow dma tables */ |
ca605bb6 | 1869 | 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 |
1870 | if (error) |
1871 | goto end_function_with_error; | |
cd1bb431 | 1872 | |
d19cf32f AC |
1873 | /* now check if there is already an existing add table for this flow */ |
1874 | if (command_args.inputOutputFlag == SEP_DRIVER_IN_FLAG) { | |
1875 | /* this buffer was for input buffers */ | |
1876 | if (flow_context_ptr->input_tables_flag) { | |
1877 | /* add table already exists - add the new tables to the end | |
1878 | of the previous */ | |
1879 | num_entries = (flow_context_ptr->last_input_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1880 | ||
1881 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1882 | (flow_context_ptr->last_input_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1883 | ||
1884 | /* connect to list of tables */ | |
1885 | *info_entry_ptr = first_table_data; | |
1886 | ||
1887 | /* set the first table data */ | |
1888 | first_table_data = flow_context_ptr->first_input_table; | |
1889 | } else { | |
1890 | /* set the input flag */ | |
1891 | flow_context_ptr->input_tables_flag = 1; | |
1892 | ||
1893 | /* set the first table data */ | |
1894 | flow_context_ptr->first_input_table = first_table_data; | |
1895 | } | |
1896 | /* set the last table data */ | |
1897 | flow_context_ptr->last_input_table = last_table_data; | |
1898 | } else { /* this is output tables */ | |
1899 | ||
1900 | /* this buffer was for input buffers */ | |
1901 | if (flow_context_ptr->output_tables_flag) { | |
1902 | /* add table already exists - add the new tables to | |
1903 | the end of the previous */ | |
1904 | num_entries = (flow_context_ptr->last_output_table.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK; | |
1905 | ||
1906 | info_entry_ptr = (struct sep_lli_entry_t *) | |
1907 | (flow_context_ptr->last_output_table.physical_address + (sizeof(struct sep_lli_entry_t) * (num_entries - 1))); | |
1908 | ||
1909 | /* connect to list of tables */ | |
1910 | *info_entry_ptr = first_table_data; | |
1911 | ||
1912 | /* set the first table data */ | |
1913 | first_table_data = flow_context_ptr->first_output_table; | |
1914 | } else { | |
1915 | /* set the input flag */ | |
1916 | flow_context_ptr->output_tables_flag = 1; | |
1917 | ||
1918 | /* set the first table data */ | |
1919 | flow_context_ptr->first_output_table = first_table_data; | |
1920 | } | |
1921 | /* set the last table data */ | |
1922 | flow_context_ptr->last_output_table = last_table_data; | |
cd1bb431 | 1923 | } |
cd1bb431 | 1924 | |
d19cf32f AC |
1925 | /* set output params */ |
1926 | command_args.first_table_addr = first_table_data.physical_address; | |
1927 | command_args.first_table_num_entries = ((first_table_data.block_size >> SEP_NUM_ENTRIES_OFFSET_IN_BITS) & SEP_NUM_ENTRIES_MASK); | |
1928 | command_args.first_table_data_size = (first_table_data.block_size & SEP_TABLE_DATA_SIZE_MASK); | |
cd1bb431 | 1929 | |
d19cf32f AC |
1930 | /* send the parameters to user application */ |
1931 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_add_flow_table_t)); | |
f93e4bf9 | 1932 | end_function_with_error: |
d19cf32f AC |
1933 | /* free the allocated tables */ |
1934 | sep_deallocated_flow_tables(&first_table_data); | |
f93e4bf9 | 1935 | end_function: |
d19cf32f | 1936 | dbg("SEP Driver:<-------- sep_add_flow_tables_handler end\n"); |
d19cf32f | 1937 | return error; |
cd1bb431 MA |
1938 | } |
1939 | ||
1940 | /* | |
1941 | this function add the flow add message to the specific flow | |
1942 | */ | |
ca605bb6 | 1943 | static int sep_add_flow_tables_message_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1944 | { |
d19cf32f | 1945 | int error; |
d19cf32f | 1946 | struct sep_driver_add_message_t command_args; |
d19cf32f | 1947 | struct sep_flow_context_t *flow_context_ptr; |
cd1bb431 | 1948 | |
d19cf32f | 1949 | dbg("SEP Driver:--------> sep_add_flow_tables_message_handler start\n"); |
cd1bb431 | 1950 | |
d19cf32f AC |
1951 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_add_message_t)); |
1952 | if (error) | |
1953 | goto end_function; | |
cd1bb431 | 1954 | |
d19cf32f AC |
1955 | /* check input */ |
1956 | if (command_args.message_size_in_bytes > SEP_MAX_ADD_MESSAGE_LENGTH_IN_BYTES) { | |
1957 | error = -ENOMEM; | |
1958 | goto end_function; | |
1959 | } | |
cd1bb431 | 1960 | |
d19cf32f | 1961 | /* find the flow context */ |
3cacf729 AC |
1962 | flow_context_ptr = sep_find_flow_context(sep, command_args.flow_id); |
1963 | if (flow_context_ptr == NULL) | |
d19cf32f | 1964 | goto end_function; |
cd1bb431 | 1965 | |
d19cf32f AC |
1966 | /* copy the message into context */ |
1967 | flow_context_ptr->message_size_in_bytes = command_args.message_size_in_bytes; | |
d19cf32f | 1968 | error = copy_from_user(flow_context_ptr->message, (void *) command_args.message_address, command_args.message_size_in_bytes); |
f93e4bf9 | 1969 | end_function: |
d19cf32f | 1970 | dbg("SEP Driver:<-------- sep_add_flow_tables_message_handler end\n"); |
d19cf32f | 1971 | return error; |
cd1bb431 MA |
1972 | } |
1973 | ||
1974 | ||
1975 | /* | |
51faa9d2 | 1976 | this function returns the bus and virtual addresses of the static pool |
cd1bb431 | 1977 | */ |
ca605bb6 | 1978 | static int sep_get_static_pool_addr_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 1979 | { |
d19cf32f | 1980 | int error; |
d19cf32f | 1981 | struct sep_driver_static_pool_addr_t command_args; |
cd1bb431 | 1982 | |
d19cf32f | 1983 | dbg("SEP Driver:--------> sep_get_static_pool_addr_handler start\n"); |
cd1bb431 | 1984 | |
d19cf32f | 1985 | /*prepare the output parameters in the struct */ |
70ae04e6 AC |
1986 | command_args.physical_static_address = sep->shared_bus + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; |
1987 | command_args.virtual_static_address = (unsigned long)sep->shared_addr + SEP_DRIVER_STATIC_AREA_OFFSET_IN_BYTES; | |
cd1bb431 | 1988 | |
51faa9d2 | 1989 | edbg("SEP Driver:bus_static_address is %08lx, virtual_static_address %08lx\n", command_args.physical_static_address, command_args.virtual_static_address); |
cd1bb431 | 1990 | |
d19cf32f AC |
1991 | /* send the parameters to user application */ |
1992 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_static_pool_addr_t)); | |
d19cf32f | 1993 | dbg("SEP Driver:<-------- sep_get_static_pool_addr_handler end\n"); |
d19cf32f | 1994 | return error; |
cd1bb431 MA |
1995 | } |
1996 | ||
1997 | /* | |
1998 | this address gets the offset of the physical address from the start | |
1999 | of the mapped area | |
2000 | */ | |
ca605bb6 | 2001 | static int sep_get_physical_mapped_offset_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2002 | { |
d19cf32f | 2003 | int error; |
d19cf32f | 2004 | struct sep_driver_get_mapped_offset_t command_args; |
cd1bb431 | 2005 | |
d19cf32f | 2006 | dbg("SEP Driver:--------> sep_get_physical_mapped_offset_handler start\n"); |
cd1bb431 | 2007 | |
d19cf32f AC |
2008 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_get_mapped_offset_t)); |
2009 | if (error) | |
2010 | goto end_function; | |
cd1bb431 | 2011 | |
70ae04e6 | 2012 | if (command_args.physical_address < sep->shared_bus) { |
51faa9d2 | 2013 | error = -EINVAL; |
d19cf32f AC |
2014 | goto end_function; |
2015 | } | |
cd1bb431 | 2016 | |
d19cf32f | 2017 | /*prepare the output parameters in the struct */ |
70ae04e6 | 2018 | command_args.offset = command_args.physical_address - sep->shared_bus; |
cd1bb431 | 2019 | |
51faa9d2 | 2020 | edbg("SEP Driver:bus_address is %08lx, offset is %lu\n", command_args.physical_address, command_args.offset); |
cd1bb431 | 2021 | |
d19cf32f AC |
2022 | /* send the parameters to user application */ |
2023 | error = copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_get_mapped_offset_t)); | |
f93e4bf9 | 2024 | end_function: |
d19cf32f | 2025 | dbg("SEP Driver:<-------- sep_get_physical_mapped_offset_handler end\n"); |
d19cf32f | 2026 | return error; |
cd1bb431 MA |
2027 | } |
2028 | ||
2029 | ||
2030 | /* | |
2031 | ? | |
2032 | */ | |
ca605bb6 | 2033 | static int sep_start_handler(struct sep_device *sep) |
cd1bb431 | 2034 | { |
d19cf32f | 2035 | unsigned long reg_val; |
f93e4bf9 | 2036 | unsigned long error = 0; |
cd1bb431 | 2037 | |
d19cf32f | 2038 | dbg("SEP Driver:--------> sep_start_handler start\n"); |
cd1bb431 | 2039 | |
d19cf32f | 2040 | /* wait in polling for message from SEP */ |
f93e4bf9 | 2041 | do |
ca605bb6 | 2042 | reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2043 | while (!reg_val); |
cd1bb431 | 2044 | |
d19cf32f | 2045 | /* check the value */ |
43e8c4a3 | 2046 | if (reg_val == 0x1) |
ca605bb6 AC |
2047 | /* fatal error - read error status from GPRO */ |
2048 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); | |
d19cf32f | 2049 | dbg("SEP Driver:<-------- sep_start_handler end\n"); |
d19cf32f | 2050 | return error; |
cd1bb431 MA |
2051 | } |
2052 | ||
2053 | /* | |
2054 | this function handles the request for SEP initialization | |
2055 | */ | |
ca605bb6 | 2056 | static int sep_init_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2057 | { |
d19cf32f | 2058 | unsigned long message_word; |
d19cf32f | 2059 | unsigned long *message_ptr; |
d19cf32f | 2060 | struct sep_driver_init_t command_args; |
d19cf32f | 2061 | unsigned long counter; |
d19cf32f | 2062 | unsigned long error; |
d19cf32f | 2063 | unsigned long reg_val; |
cd1bb431 | 2064 | |
d19cf32f | 2065 | dbg("SEP Driver:--------> sep_init_handler start\n"); |
d19cf32f | 2066 | error = 0; |
cd1bb431 | 2067 | |
d19cf32f | 2068 | error = copy_from_user(&command_args, (void *) arg, sizeof(struct sep_driver_init_t)); |
cd1bb431 | 2069 | |
d19cf32f | 2070 | dbg("SEP Driver:--------> sep_init_handler - finished copy_from_user \n"); |
cd1bb431 | 2071 | |
d19cf32f AC |
2072 | if (error) |
2073 | goto end_function; | |
cd1bb431 | 2074 | |
d19cf32f AC |
2075 | /* PATCH - configure the DMA to single -burst instead of multi-burst */ |
2076 | /*sep_configure_dma_burst(); */ | |
cd1bb431 | 2077 | |
d19cf32f | 2078 | dbg("SEP Driver:--------> sep_init_handler - finished sep_configure_dma_burst \n"); |
cd1bb431 | 2079 | |
d19cf32f | 2080 | message_ptr = (unsigned long *) command_args.message_addr; |
cd1bb431 | 2081 | |
d19cf32f | 2082 | /* set the base address of the SRAM */ |
ca605bb6 | 2083 | sep_write_reg(sep, HW_SRAM_ADDR_REG_ADDR, HW_CC_SRAM_BASE_ADDRESS); |
cd1bb431 | 2084 | |
d19cf32f AC |
2085 | for (counter = 0; counter < command_args.message_size_in_words; counter++, message_ptr++) { |
2086 | get_user(message_word, message_ptr); | |
d19cf32f | 2087 | /* write data to SRAM */ |
ca605bb6 | 2088 | sep_write_reg(sep, HW_SRAM_DATA_REG_ADDR, message_word); |
d19cf32f | 2089 | edbg("SEP Driver:message_word is %lu\n", message_word); |
cd1bb431 | 2090 | /* wait for write complete */ |
ca605bb6 | 2091 | sep_wait_sram_write(sep); |
d19cf32f | 2092 | } |
d19cf32f | 2093 | dbg("SEP Driver:--------> sep_init_handler - finished getting messages from user space\n"); |
d19cf32f | 2094 | /* signal SEP */ |
ca605bb6 | 2095 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x1); |
cd1bb431 | 2096 | |
f93e4bf9 | 2097 | do |
ca605bb6 | 2098 | reg_val = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR3_REG_ADDR); |
f93e4bf9 | 2099 | while (!(reg_val & 0xFFFFFFFD)); |
cd1bb431 | 2100 | |
d19cf32f | 2101 | dbg("SEP Driver:--------> sep_init_handler - finished waiting for reg_val & 0xFFFFFFFD \n"); |
cd1bb431 | 2102 | |
d19cf32f AC |
2103 | /* check the value */ |
2104 | if (reg_val == 0x1) { | |
2105 | edbg("SEP Driver:init failed\n"); | |
cd1bb431 | 2106 | |
ca605bb6 | 2107 | error = sep_read_reg(sep, 0x8060); |
d19cf32f | 2108 | edbg("SEP Driver:sw monitor is %lu\n", error); |
cd1bb431 | 2109 | |
d19cf32f | 2110 | /* fatal error - read erro status from GPRO */ |
ca605bb6 | 2111 | error = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR0_REG_ADDR); |
d19cf32f | 2112 | edbg("SEP Driver:error is %lu\n", error); |
d19cf32f | 2113 | } |
f93e4bf9 | 2114 | end_function: |
d19cf32f | 2115 | dbg("SEP Driver:<-------- sep_init_handler end\n"); |
d19cf32f | 2116 | return error; |
cd1bb431 MA |
2117 | |
2118 | } | |
2119 | ||
2120 | /* | |
2121 | this function handles the request cache and resident reallocation | |
2122 | */ | |
ca605bb6 AC |
2123 | static int sep_realloc_cache_resident_handler(struct sep_device *sep, |
2124 | unsigned long arg) | |
cd1bb431 | 2125 | { |
d19cf32f | 2126 | struct sep_driver_realloc_cache_resident_t command_args; |
6f13ea3d | 2127 | int error; |
cd1bb431 | 2128 | |
d19cf32f | 2129 | /* copy cache and resident to the their intended locations */ |
6f13ea3d | 2130 | error = sep_load_firmware(sep); |
d19cf32f | 2131 | if (error) |
6f13ea3d | 2132 | return error; |
cd1bb431 | 2133 | |
70ae04e6 | 2134 | command_args.new_base_addr = sep->shared_bus; |
cd1bb431 | 2135 | |
d19cf32f AC |
2136 | /* find the new base address according to the lowest address between |
2137 | cache, resident and shared area */ | |
6f13ea3d AC |
2138 | if (sep->resident_bus < command_args.new_base_addr) |
2139 | command_args.new_base_addr = sep->resident_bus; | |
70ae04e6 AC |
2140 | if (sep->rar_bus < command_args.new_base_addr) |
2141 | command_args.new_base_addr = sep->rar_bus; | |
cd1bb431 | 2142 | |
d19cf32f | 2143 | /* set the return parameters */ |
70ae04e6 | 2144 | command_args.new_cache_addr = sep->rar_bus; |
6f13ea3d | 2145 | command_args.new_resident_addr = sep->resident_bus; |
cd1bb431 | 2146 | |
d19cf32f | 2147 | /* set the new shared area */ |
70ae04e6 | 2148 | command_args.new_shared_area_addr = sep->shared_bus; |
cd1bb431 | 2149 | |
70ae04e6 | 2150 | edbg("SEP Driver:command_args.new_shared_addr is %08llx\n", command_args.new_shared_area_addr); |
6f13ea3d AC |
2151 | edbg("SEP Driver:command_args.new_base_addr is %08llx\n", command_args.new_base_addr); |
2152 | edbg("SEP Driver:command_args.new_resident_addr is %08llx\n", command_args.new_resident_addr); | |
70ae04e6 | 2153 | edbg("SEP Driver:command_args.new_rar_addr is %08llx\n", command_args.new_cache_addr); |
cd1bb431 | 2154 | |
d19cf32f | 2155 | /* return to user */ |
6f13ea3d AC |
2156 | if (copy_to_user((void *) arg, &command_args, sizeof(struct sep_driver_realloc_cache_resident_t))) |
2157 | return -EFAULT; | |
2158 | return 0; | |
cd1bb431 MA |
2159 | } |
2160 | ||
cfd498be AC |
2161 | /** |
2162 | * sep_get_time_handler - time request from user space | |
2163 | * @sep: sep we are to set the time for | |
2164 | * @arg: pointer to user space arg buffer | |
2165 | * | |
2166 | * This function reports back the time and the address in the SEP | |
2167 | * shared buffer at which it has been placed. (Do we really need this!!!) | |
2168 | */ | |
2169 | ||
ca605bb6 | 2170 | static int sep_get_time_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2171 | { |
d19cf32f | 2172 | struct sep_driver_get_time_t command_args; |
cd1bb431 | 2173 | |
cfd498be | 2174 | mutex_lock(&sep_mutex); |
a4e80a1b AC |
2175 | command_args.time_value = sep_set_time(sep); |
2176 | command_args.time_physical_address = (unsigned long)sep_time_address(sep); | |
cfd498be AC |
2177 | mutex_unlock(&sep_mutex); |
2178 | if (copy_to_user((void __user *)arg, | |
2179 | &command_args, sizeof(struct sep_driver_get_time_t))) | |
2180 | return -EFAULT; | |
2181 | return 0; | |
cd1bb431 MA |
2182 | |
2183 | } | |
2184 | ||
cd1bb431 | 2185 | /* |
0a18d7b5 | 2186 | This API handles the end transaction request |
cd1bb431 | 2187 | */ |
ca605bb6 | 2188 | static int sep_end_transaction_handler(struct sep_device *sep, unsigned long arg) |
cd1bb431 | 2189 | { |
0a18d7b5 | 2190 | dbg("SEP Driver:--------> sep_end_transaction_handler start\n"); |
cd1bb431 | 2191 | |
0a18d7b5 AC |
2192 | #if 0 /*!SEP_DRIVER_POLLING_MODE */ |
2193 | /* close IMR */ | |
ca605bb6 | 2194 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, 0x7FFF); |
cd1bb431 | 2195 | |
0a18d7b5 | 2196 | /* release IRQ line */ |
ca605bb6 | 2197 | free_irq(SEP_DIRVER_IRQ_NUM, sep); |
cd1bb431 | 2198 | |
0a18d7b5 AC |
2199 | /* lock the sep mutex */ |
2200 | mutex_unlock(&sep_mutex); | |
2201 | #endif | |
cd1bb431 | 2202 | |
0a18d7b5 | 2203 | dbg("SEP Driver:<-------- sep_end_transaction_handler end\n"); |
cd1bb431 | 2204 | |
0a18d7b5 | 2205 | return 0; |
cd1bb431 MA |
2206 | } |
2207 | ||
0a18d7b5 | 2208 | |
6f9e0f60 AC |
2209 | /** |
2210 | * sep_set_flow_id_handler - handle flow setting | |
2211 | * @sep: the SEP we are configuring | |
2212 | * @flow_id: the flow we are setting | |
2213 | * | |
2214 | * This function handler the set flow id command | |
2215 | */ | |
2216 | static int sep_set_flow_id_handler(struct sep_device *sep, | |
2217 | unsigned long flow_id) | |
cd1bb431 | 2218 | { |
6f9e0f60 | 2219 | int error = 0; |
d19cf32f | 2220 | struct sep_flow_context_t *flow_data_ptr; |
cd1bb431 | 2221 | |
d19cf32f AC |
2222 | /* find the flow data structure that was just used for creating new flow |
2223 | - its id should be default */ | |
cd1bb431 | 2224 | |
6f9e0f60 AC |
2225 | mutex_lock(&sep_mutex); |
2226 | flow_data_ptr = sep_find_flow_context(sep, SEP_TEMP_FLOW_ID); | |
2227 | if (flow_data_ptr) | |
2228 | flow_data_ptr->flow_id = flow_id; /* set flow id */ | |
2229 | else | |
2230 | error = -EINVAL; | |
2231 | mutex_unlock(&sep_mutex); | |
d19cf32f | 2232 | return error; |
cd1bb431 MA |
2233 | } |
2234 | ||
0a18d7b5 AC |
2235 | static int sep_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) |
2236 | { | |
2237 | int error = 0; | |
ca605bb6 | 2238 | struct sep_device *sep = filp->private_data; |
0a18d7b5 AC |
2239 | |
2240 | dbg("------------>SEP Driver: ioctl start\n"); | |
2241 | ||
2242 | edbg("SEP Driver: cmd is %x\n", cmd); | |
2243 | ||
0a18d7b5 AC |
2244 | switch (cmd) { |
2245 | case SEP_IOCSENDSEPCOMMAND: | |
2246 | /* send command to SEP */ | |
ca605bb6 | 2247 | sep_send_command_handler(sep); |
0a18d7b5 AC |
2248 | edbg("SEP Driver: after sep_send_command_handler\n"); |
2249 | break; | |
2250 | case SEP_IOCSENDSEPRPLYCOMMAND: | |
2251 | /* send reply command to SEP */ | |
ca605bb6 | 2252 | sep_send_reply_command_handler(sep); |
0a18d7b5 AC |
2253 | break; |
2254 | case SEP_IOCALLOCDATAPOLL: | |
2255 | /* allocate data pool */ | |
ca605bb6 | 2256 | error = sep_allocate_data_pool_memory_handler(sep, arg); |
0a18d7b5 AC |
2257 | break; |
2258 | case SEP_IOCWRITEDATAPOLL: | |
2259 | /* write data into memory pool */ | |
ca605bb6 | 2260 | error = sep_write_into_data_pool_handler(sep, arg); |
0a18d7b5 AC |
2261 | break; |
2262 | case SEP_IOCREADDATAPOLL: | |
2263 | /* read data from data pool into application memory */ | |
ca605bb6 | 2264 | error = sep_read_from_data_pool_handler(sep, arg); |
0a18d7b5 AC |
2265 | break; |
2266 | case SEP_IOCCREATESYMDMATABLE: | |
2267 | /* create dma table for synhronic operation */ | |
ca605bb6 | 2268 | error = sep_create_sync_dma_tables_handler(sep, arg); |
0a18d7b5 AC |
2269 | break; |
2270 | case SEP_IOCCREATEFLOWDMATABLE: | |
2271 | /* create flow dma tables */ | |
ca605bb6 | 2272 | error = sep_create_flow_dma_tables_handler(sep, arg); |
0a18d7b5 AC |
2273 | break; |
2274 | case SEP_IOCFREEDMATABLEDATA: | |
2275 | /* free the pages */ | |
ca605bb6 | 2276 | error = sep_free_dma_table_data_handler(sep); |
0a18d7b5 AC |
2277 | break; |
2278 | case SEP_IOCSETFLOWID: | |
2279 | /* set flow id */ | |
6f9e0f60 | 2280 | error = sep_set_flow_id_handler(sep, (unsigned long)arg); |
0a18d7b5 AC |
2281 | break; |
2282 | case SEP_IOCADDFLOWTABLE: | |
2283 | /* add tables to the dynamic flow */ | |
ca605bb6 | 2284 | error = sep_add_flow_tables_handler(sep, arg); |
0a18d7b5 AC |
2285 | break; |
2286 | case SEP_IOCADDFLOWMESSAGE: | |
2287 | /* add message of add tables to flow */ | |
ca605bb6 | 2288 | error = sep_add_flow_tables_message_handler(sep, arg); |
0a18d7b5 AC |
2289 | break; |
2290 | case SEP_IOCSEPSTART: | |
2291 | /* start command to sep */ | |
ca605bb6 | 2292 | error = sep_start_handler(sep); |
0a18d7b5 AC |
2293 | break; |
2294 | case SEP_IOCSEPINIT: | |
2295 | /* init command to sep */ | |
ca605bb6 | 2296 | error = sep_init_handler(sep, arg); |
0a18d7b5 | 2297 | break; |
0a18d7b5 AC |
2298 | case SEP_IOCGETSTATICPOOLADDR: |
2299 | /* get the physical and virtual addresses of the static pool */ | |
ca605bb6 | 2300 | error = sep_get_static_pool_addr_handler(sep, arg); |
0a18d7b5 AC |
2301 | break; |
2302 | case SEP_IOCENDTRANSACTION: | |
ca605bb6 | 2303 | error = sep_end_transaction_handler(sep, arg); |
0a18d7b5 AC |
2304 | break; |
2305 | case SEP_IOCREALLOCCACHERES: | |
ca605bb6 | 2306 | error = sep_realloc_cache_resident_handler(sep, arg); |
0a18d7b5 AC |
2307 | break; |
2308 | case SEP_IOCGETMAPPEDADDROFFSET: | |
ca605bb6 | 2309 | error = sep_get_physical_mapped_offset_handler(sep, arg); |
0a18d7b5 AC |
2310 | break; |
2311 | case SEP_IOCGETIME: | |
ca605bb6 | 2312 | error = sep_get_time_handler(sep, arg); |
0a18d7b5 AC |
2313 | break; |
2314 | default: | |
2315 | error = -ENOTTY; | |
2316 | break; | |
2317 | } | |
2318 | dbg("SEP Driver:<-------- ioctl end\n"); | |
2319 | return error; | |
2320 | } | |
2321 | ||
2322 | ||
2323 | ||
2324 | #if !SEP_DRIVER_POLLING_MODE | |
2325 | ||
2326 | /* handler for flow done interrupt */ | |
2327 | ||
2328 | static void sep_flow_done_handler(struct work_struct *work) | |
2329 | { | |
2330 | struct sep_flow_context_t *flow_data_ptr; | |
2331 | ||
2332 | /* obtain the mutex */ | |
2333 | mutex_lock(&sep_mutex); | |
2334 | ||
2335 | /* get the pointer to context */ | |
2336 | flow_data_ptr = (struct sep_flow_context_t *) work; | |
2337 | ||
2338 | /* free all the current input tables in sep */ | |
2339 | sep_deallocated_flow_tables(&flow_data_ptr->input_tables_in_process); | |
2340 | ||
2341 | /* free all the current tables output tables in SEP (if needed) */ | |
2342 | if (flow_data_ptr->output_tables_in_process.physical_address != 0xffffffff) | |
2343 | sep_deallocated_flow_tables(&flow_data_ptr->output_tables_in_process); | |
2344 | ||
2345 | /* check if we have additional tables to be sent to SEP only input | |
2346 | flag may be checked */ | |
2347 | if (flow_data_ptr->input_tables_flag) { | |
2348 | /* copy the message to the shared RAM and signal SEP */ | |
70ae04e6 | 2349 | memcpy((void *) flow_data_ptr->message, (void *) sep->shared_addr, flow_data_ptr->message_size_in_bytes); |
0a18d7b5 | 2350 | |
ca605bb6 | 2351 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR2_REG_ADDR, 0x2); |
0a18d7b5 AC |
2352 | } |
2353 | mutex_unlock(&sep_mutex); | |
2354 | } | |
cd1bb431 | 2355 | /* |
0a18d7b5 | 2356 | interrupt handler function |
cd1bb431 | 2357 | */ |
0a18d7b5 | 2358 | static irqreturn_t sep_inthandler(int irq, void *dev_id) |
cd1bb431 | 2359 | { |
0a18d7b5 | 2360 | irqreturn_t int_error; |
0a18d7b5 AC |
2361 | unsigned long reg_val; |
2362 | unsigned long flow_id; | |
2363 | struct sep_flow_context_t *flow_context_ptr; | |
ca605bb6 | 2364 | struct sep_device *sep = dev_id; |
cd1bb431 | 2365 | |
0a18d7b5 | 2366 | int_error = IRQ_HANDLED; |
cd1bb431 | 2367 | |
0a18d7b5 | 2368 | /* read the IRR register to check if this is SEP interrupt */ |
ca605bb6 | 2369 | reg_val = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR); |
0a18d7b5 | 2370 | edbg("SEP Interrupt - reg is %08lx\n", reg_val); |
cd1bb431 | 2371 | |
0a18d7b5 AC |
2372 | /* check if this is the flow interrupt */ |
2373 | if (0 /*reg_val & (0x1 << 11) */ ) { | |
2374 | /* read GPRO to find out the which flow is done */ | |
ca605bb6 | 2375 | flow_id = sep_read_reg(sep, HW_HOST_IRR_REG_ADDR); |
cd1bb431 | 2376 | |
0a18d7b5 | 2377 | /* find the contex of the flow */ |
3cacf729 AC |
2378 | flow_context_ptr = sep_find_flow_context(sep, flow_id >> 28); |
2379 | if (flow_context_ptr == NULL) | |
0a18d7b5 | 2380 | goto end_function_with_error; |
cd1bb431 | 2381 | |
0a18d7b5 | 2382 | /* queue the work */ |
3cacf729 | 2383 | INIT_WORK(&flow_context_ptr->flow_wq, sep_flow_done_handler); |
ca605bb6 | 2384 | queue_work(sep->flow_wq, &flow_context_ptr->flow_wq); |
0a18d7b5 AC |
2385 | |
2386 | } else { | |
2387 | /* check if this is reply interrupt from SEP */ | |
2388 | if (reg_val & (0x1 << 13)) { | |
2389 | /* update the counter of reply messages */ | |
ca605bb6 | 2390 | sep->reply_ct++; |
0a18d7b5 | 2391 | /* wake up the waiting process */ |
904290c0 | 2392 | wake_up(&sep_event); |
0a18d7b5 AC |
2393 | } else { |
2394 | int_error = IRQ_NONE; | |
2395 | goto end_function; | |
2396 | } | |
2397 | } | |
2398 | end_function_with_error: | |
2399 | /* clear the interrupt */ | |
ca605bb6 | 2400 | sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, reg_val); |
0a18d7b5 AC |
2401 | end_function: |
2402 | return int_error; | |
2403 | } | |
2404 | ||
2405 | #endif | |
cd1bb431 | 2406 | |
cd1bb431 | 2407 | |
cd1bb431 | 2408 | |
8c7ff81a | 2409 | #if 0 |
cd1bb431 | 2410 | |
ca605bb6 | 2411 | static void sep_wait_busy(struct sep_device *sep) |
794f1d78 AC |
2412 | { |
2413 | u32 reg; | |
2414 | ||
2415 | do { | |
ca605bb6 | 2416 | reg = sep_read_reg(sep, HW_HOST_SEP_BUSY_REG_ADDR); |
794f1d78 AC |
2417 | } while (reg); |
2418 | } | |
2419 | ||
cd1bb431 MA |
2420 | /* |
2421 | PATCH for configuring the DMA to single burst instead of multi-burst | |
2422 | */ | |
ca605bb6 | 2423 | static void sep_configure_dma_burst(struct sep_device *sep) |
cd1bb431 | 2424 | { |
cd1bb431 MA |
2425 | #define HW_AHB_RD_WR_BURSTS_REG_ADDR 0x0E10UL |
2426 | ||
d19cf32f | 2427 | dbg("SEP Driver:<-------- sep_configure_dma_burst start \n"); |
cd1bb431 | 2428 | |
d19cf32f | 2429 | /* request access to registers from SEP */ |
ca605bb6 | 2430 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x2); |
cd1bb431 | 2431 | |
d19cf32f | 2432 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (write reg) \n"); |
cd1bb431 | 2433 | |
ca605bb6 | 2434 | sep_wait_busy(sep); |
cd1bb431 | 2435 | |
d19cf32f | 2436 | dbg("SEP Driver:<-------- sep_configure_dma_burst finished request access to registers from SEP (while(revVal) wait loop) \n"); |
cd1bb431 | 2437 | |
d19cf32f | 2438 | /* set the DMA burst register to single burst */ |
ca605bb6 | 2439 | sep_write_reg(sep, HW_AHB_RD_WR_BURSTS_REG_ADDR, 0x0UL); |
cd1bb431 | 2440 | |
d19cf32f | 2441 | /* release the sep busy */ |
ca605bb6 AC |
2442 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR0_REG_ADDR, 0x0UL); |
2443 | sep_wait_busy(sep); | |
cd1bb431 | 2444 | |
d19cf32f | 2445 | dbg("SEP Driver:<-------- sep_configure_dma_burst done \n"); |
cd1bb431 MA |
2446 | |
2447 | } | |
2448 | ||
8c7ff81a AC |
2449 | #endif |
2450 | ||
0097a69d | 2451 | /* |
ca605bb6 | 2452 | Function that is activaed on the succesful probe of the SEP device |
0097a69d AC |
2453 | */ |
2454 | static int __devinit sep_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2455 | { | |
2456 | int error = 0; | |
ca605bb6 AC |
2457 | struct sep_device *sep; |
2458 | int counter; | |
2459 | int size; /* size of memory for allocation */ | |
0097a69d AC |
2460 | |
2461 | edbg("Sep pci probe starting\n"); | |
ca605bb6 AC |
2462 | if (sep_dev != NULL) { |
2463 | dev_warn(&pdev->dev, "only one SEP supported.\n"); | |
2464 | return -EBUSY; | |
2465 | } | |
0097a69d AC |
2466 | |
2467 | /* enable the device */ | |
2468 | error = pci_enable_device(pdev); | |
2469 | if (error) { | |
2470 | edbg("error enabling pci device\n"); | |
2471 | goto end_function; | |
2472 | } | |
2473 | ||
2474 | /* set the pci dev pointer */ | |
ca605bb6 AC |
2475 | sep_dev = &sep_instance; |
2476 | sep = &sep_instance; | |
2477 | ||
70ae04e6 | 2478 | edbg("sep->shared_addr = %p\n", sep->shared_addr); |
ca605bb6 AC |
2479 | /* transaction counter that coordinates the transactions between SEP |
2480 | and HOST */ | |
2481 | sep->send_ct = 0; | |
2482 | /* counter for the messages from sep */ | |
2483 | sep->reply_ct = 0; | |
2484 | /* counter for the number of bytes allocated in the pool | |
2485 | for the current transaction */ | |
2486 | sep->data_pool_bytes_allocated = 0; | |
2487 | ||
2488 | /* calculate the total size for allocation */ | |
2489 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2490 | 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; | |
2491 | ||
2492 | /* allocate the shared area */ | |
8c7ff81a | 2493 | if (sep_map_and_alloc_shared_area(sep, size)) { |
ca605bb6 AC |
2494 | error = -ENOMEM; |
2495 | /* allocation failed */ | |
2496 | goto end_function_error; | |
2497 | } | |
2498 | /* now set the memory regions */ | |
ca605bb6 | 2499 | #if (SEP_DRIVER_RECONFIG_MESSAGE_AREA == 1) |
663d8bb0 AC |
2500 | /* Note: this test section will need moving before it could ever |
2501 | work as the registers are not yet mapped ! */ | |
ca605bb6 | 2502 | /* send the new SHARED MESSAGE AREA to the SEP */ |
70ae04e6 | 2503 | sep_write_reg(sep, HW_HOST_HOST_SEP_GPR1_REG_ADDR, sep->shared_bus); |
ca605bb6 AC |
2504 | |
2505 | /* poll for SEP response */ | |
51faa9d2 | 2506 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); |
70ae04e6 | 2507 | while (retval != 0xffffffff && retval != sep->shared_bus) |
51faa9d2 | 2508 | retval = sep_read_reg(sep, HW_HOST_SEP_HOST_GPR1_REG_ADDR); |
ca605bb6 AC |
2509 | |
2510 | /* check the return value (register) */ | |
70ae04e6 | 2511 | if (retval != sep->shared_bus) { |
ca605bb6 AC |
2512 | error = -ENOMEM; |
2513 | goto end_function_deallocate_sep_shared_area; | |
2514 | } | |
2515 | #endif | |
2516 | /* init the flow contextes */ | |
2517 | for (counter = 0; counter < SEP_DRIVER_NUM_FLOWS; counter++) | |
2518 | sep->flows[counter].flow_id = SEP_FREE_FLOW_ID; | |
2519 | ||
2520 | sep->flow_wq = create_singlethread_workqueue("sepflowwq"); | |
2521 | if (sep->flow_wq == NULL) { | |
2522 | error = -ENOMEM; | |
2523 | edbg("sep_driver:flow queue creation failed\n"); | |
2524 | goto end_function_deallocate_sep_shared_area; | |
2525 | } | |
2526 | edbg("SEP Driver: create flow workqueue \n"); | |
ca605bb6 | 2527 | sep->pdev = pci_dev_get(pdev); |
0097a69d | 2528 | |
663d8bb0 | 2529 | sep->reg_addr = pci_ioremap_bar(pdev, 0); |
70ae04e6 | 2530 | if (!sep->reg_addr) { |
663d8bb0 | 2531 | edbg("sep: ioremap of registers failed.\n"); |
ca605bb6 | 2532 | goto end_function_deallocate_sep_shared_area; |
0097a69d | 2533 | } |
663d8bb0 | 2534 | edbg("SEP Driver:reg_addr is %p\n", sep->reg_addr); |
0097a69d | 2535 | |
663d8bb0 AC |
2536 | /* load the rom code */ |
2537 | sep_load_rom_code(sep); | |
0097a69d AC |
2538 | |
2539 | /* set up system base address and shared memory location */ | |
6f13ea3d AC |
2540 | sep->rar_addr = dma_alloc_coherent(&sep->pdev->dev, |
2541 | 2 * SEP_RAR_IO_MEM_REGION_SIZE, | |
2542 | &sep->rar_bus, GFP_KERNEL); | |
0097a69d | 2543 | |
ca605bb6 | 2544 | if (!sep->rar_addr) { |
6f13ea3d | 2545 | edbg("SEP Driver:can't allocate rar\n"); |
ca605bb6 | 2546 | goto end_function_uniomap; |
0097a69d | 2547 | } |
0097a69d | 2548 | |
663d8bb0 | 2549 | |
51faa9d2 | 2550 | edbg("SEP Driver:rar_bus is %08llx\n", (unsigned long long)sep->rar_bus); |
ca605bb6 | 2551 | edbg("SEP Driver:rar_virtual is %p\n", sep->rar_addr); |
0097a69d AC |
2552 | |
2553 | #if !SEP_DRIVER_POLLING_MODE | |
2554 | ||
2555 | edbg("SEP Driver: about to write IMR and ICR REG_ADDR\n"); | |
2556 | ||
2557 | /* clear ICR register */ | |
ca605bb6 | 2558 | sep_write_reg(sep, HW_HOST_ICR_REG_ADDR, 0xFFFFFFFF); |
0097a69d AC |
2559 | |
2560 | /* set the IMR register - open only GPR 2 */ | |
ca605bb6 | 2561 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); |
0097a69d | 2562 | |
0097a69d AC |
2563 | edbg("SEP Driver: about to call request_irq\n"); |
2564 | /* get the interrupt line */ | |
ca605bb6 | 2565 | error = request_irq(pdev->irq, sep_inthandler, IRQF_SHARED, "sep_driver", sep); |
0097a69d | 2566 | if (error) |
ca605bb6 | 2567 | goto end_function_free_res; |
663d8bb0 | 2568 | return 0; |
0097a69d AC |
2569 | edbg("SEP Driver: about to write IMR REG_ADDR"); |
2570 | ||
2571 | /* set the IMR register - open only GPR 2 */ | |
ca605bb6 | 2572 | sep_write_reg(sep, HW_HOST_IMR_REG_ADDR, (~(0x1 << 13))); |
0097a69d | 2573 | |
ca605bb6 | 2574 | end_function_free_res: |
6f13ea3d AC |
2575 | dma_free_coherent(&sep->pdev->dev, 2 * SEP_RAR_IO_MEM_REGION_SIZE, |
2576 | sep->rar_addr, sep->rar_bus); | |
0097a69d | 2577 | #endif /* SEP_DRIVER_POLLING_MODE */ |
ca605bb6 | 2578 | end_function_uniomap: |
70ae04e6 | 2579 | iounmap(sep->reg_addr); |
ca605bb6 AC |
2580 | end_function_deallocate_sep_shared_area: |
2581 | /* de-allocate shared area */ | |
8c7ff81a | 2582 | sep_unmap_and_free_shared_area(sep, size); |
ca605bb6 AC |
2583 | end_function_error: |
2584 | sep_dev = NULL; | |
0097a69d AC |
2585 | end_function: |
2586 | return error; | |
2587 | } | |
2588 | ||
2589 | static struct pci_device_id sep_pci_id_tbl[] = { | |
2590 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080c)}, | |
2591 | {0} | |
2592 | }; | |
2593 | ||
2594 | MODULE_DEVICE_TABLE(pci, sep_pci_id_tbl); | |
2595 | ||
2596 | /* field for registering driver to PCI device */ | |
2597 | static struct pci_driver sep_pci_driver = { | |
2598 | .name = "sep_sec_driver", | |
2599 | .id_table = sep_pci_id_tbl, | |
2600 | .probe = sep_probe | |
ca605bb6 | 2601 | /* FIXME: remove handler */ |
0097a69d AC |
2602 | }; |
2603 | ||
2f82614c AC |
2604 | /* major and minor device numbers */ |
2605 | static dev_t sep_devno; | |
2606 | ||
2607 | /* the files operations structure of the driver */ | |
2608 | static struct file_operations sep_file_operations = { | |
2609 | .owner = THIS_MODULE, | |
2610 | .ioctl = sep_ioctl, | |
2611 | .poll = sep_poll, | |
2612 | .open = sep_open, | |
2613 | .release = sep_release, | |
2614 | .mmap = sep_mmap, | |
2615 | }; | |
2616 | ||
2617 | ||
2618 | /* cdev struct of the driver */ | |
2619 | static struct cdev sep_cdev; | |
2620 | ||
a2171b68 AC |
2621 | /* |
2622 | this function registers the driver to the file system | |
2623 | */ | |
2624 | static int sep_register_driver_to_fs(void) | |
2625 | { | |
2f82614c | 2626 | int ret_val = alloc_chrdev_region(&sep_devno, 0, 1, "sep_sec_driver"); |
a2171b68 | 2627 | if (ret_val) { |
a4e80a1b AC |
2628 | edbg("sep: major number allocation failed, retval is %d\n", |
2629 | ret_val); | |
2630 | return ret_val; | |
a2171b68 | 2631 | } |
a2171b68 | 2632 | /* init cdev */ |
2f82614c AC |
2633 | cdev_init(&sep_cdev, &sep_file_operations); |
2634 | sep_cdev.owner = THIS_MODULE; | |
a2171b68 AC |
2635 | |
2636 | /* register the driver with the kernel */ | |
2f82614c | 2637 | ret_val = cdev_add(&sep_cdev, sep_devno, 1); |
a2171b68 AC |
2638 | if (ret_val) { |
2639 | edbg("sep_driver:cdev_add failed, retval is %d\n", ret_val); | |
a4e80a1b AC |
2640 | /* unregister dev numbers */ |
2641 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 | 2642 | } |
a4e80a1b | 2643 | return ret_val; |
a2171b68 AC |
2644 | } |
2645 | ||
a2171b68 AC |
2646 | |
2647 | /*-------------------------------------------------------------- | |
2648 | init function | |
2649 | ----------------------------------------------------------------*/ | |
2650 | static int __init sep_init(void) | |
2651 | { | |
2652 | int ret_val = 0; | |
a2171b68 | 2653 | dbg("SEP Driver:-------->Init start\n"); |
91410066 AC |
2654 | /* FIXME: Probe can occur before we are ready to survive a probe */ |
2655 | ret_val = pci_register_driver(&sep_pci_driver); | |
a2171b68 AC |
2656 | if (ret_val) { |
2657 | edbg("sep_driver:sep_driver_to_device failed, ret_val is %d\n", ret_val); | |
2658 | goto end_function_unregister_from_fs; | |
2659 | } | |
a2171b68 AC |
2660 | /* register driver to fs */ |
2661 | ret_val = sep_register_driver_to_fs(); | |
2662 | if (ret_val) | |
ca605bb6 | 2663 | goto end_function_unregister_pci; |
a2171b68 | 2664 | goto end_function; |
ca605bb6 AC |
2665 | end_function_unregister_pci: |
2666 | pci_unregister_driver(&sep_pci_driver); | |
a2171b68 AC |
2667 | end_function_unregister_from_fs: |
2668 | /* unregister from fs */ | |
91410066 AC |
2669 | cdev_del(&sep_cdev); |
2670 | /* unregister dev numbers */ | |
2671 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 AC |
2672 | end_function: |
2673 | dbg("SEP Driver:<-------- Init end\n"); | |
2674 | return ret_val; | |
2675 | } | |
2676 | ||
2677 | ||
2678 | /*------------------------------------------------------------- | |
2679 | exit function | |
2680 | --------------------------------------------------------------*/ | |
2681 | static void __exit sep_exit(void) | |
2682 | { | |
2683 | int size; | |
2684 | ||
2685 | dbg("SEP Driver:--------> Exit start\n"); | |
2686 | ||
2687 | /* unregister from fs */ | |
91410066 AC |
2688 | cdev_del(&sep_cdev); |
2689 | /* unregister dev numbers */ | |
2690 | unregister_chrdev_region(sep_devno, 1); | |
a2171b68 AC |
2691 | /* calculate the total size for de-allocation */ |
2692 | size = SEP_DRIVER_MESSAGE_SHARED_AREA_SIZE_IN_BYTES + | |
2693 | 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 | 2694 | /* FIXME: We need to do this in the unload for the device */ |
a2171b68 | 2695 | /* free shared area */ |
ca605bb6 | 2696 | if (sep_dev) { |
8c7ff81a | 2697 | sep_unmap_and_free_shared_area(sep_dev, size); |
ca605bb6 AC |
2698 | edbg("SEP Driver: free pages SEP SHARED AREA \n"); |
2699 | iounmap((void *) sep_dev->reg_addr); | |
2700 | edbg("SEP Driver: iounmap \n"); | |
2701 | } | |
a2171b68 AC |
2702 | edbg("SEP Driver: release_mem_region \n"); |
2703 | dbg("SEP Driver:<-------- Exit end\n"); | |
2704 | } | |
2705 | ||
2706 | ||
cd1bb431 MA |
2707 | module_init(sep_init); |
2708 | module_exit(sep_exit); | |
2709 | ||
2710 | MODULE_LICENSE("GPL"); |