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Commit | Line | Data |
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8e8ec596 KP |
1 | /* |
2 | * CAAM/SEC 4.x transport/backend driver | |
3 | * JobR backend functionality | |
4 | * | |
4bba1e9f | 5 | * Copyright 2008-2012 Freescale Semiconductor, Inc. |
8e8ec596 KP |
6 | */ |
7 | ||
5af50730 | 8 | #include <linux/of_irq.h> |
6c5dc7f8 | 9 | #include <linux/of_address.h> |
5af50730 | 10 | |
8e8ec596 KP |
11 | #include "compat.h" |
12 | #include "regs.h" | |
13 | #include "jr.h" | |
14 | #include "desc.h" | |
15 | #include "intern.h" | |
16 | ||
313ea293 RG |
17 | struct jr_driver_data { |
18 | /* List of Physical JobR's with the Driver */ | |
19 | struct list_head jr_list; | |
20 | spinlock_t jr_alloc_lock; /* jr_list lock */ | |
21 | } ____cacheline_aligned; | |
22 | ||
23 | static struct jr_driver_data driver_data; | |
24 | ||
25 | static int caam_reset_hw_jr(struct device *dev) | |
26 | { | |
27 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
28 | unsigned int timeout = 100000; | |
29 | ||
30 | /* | |
31 | * mask interrupts since we are going to poll | |
32 | * for reset completion status | |
33 | */ | |
34 | setbits32(&jrp->rregs->rconfig_lo, JRCFG_IMSK); | |
35 | ||
36 | /* initiate flush (required prior to reset) */ | |
37 | wr_reg32(&jrp->rregs->jrcommand, JRCR_RESET); | |
38 | while (((rd_reg32(&jrp->rregs->jrintstatus) & JRINT_ERR_HALT_MASK) == | |
39 | JRINT_ERR_HALT_INPROGRESS) && --timeout) | |
40 | cpu_relax(); | |
41 | ||
42 | if ((rd_reg32(&jrp->rregs->jrintstatus) & JRINT_ERR_HALT_MASK) != | |
43 | JRINT_ERR_HALT_COMPLETE || timeout == 0) { | |
44 | dev_err(dev, "failed to flush job ring %d\n", jrp->ridx); | |
45 | return -EIO; | |
46 | } | |
47 | ||
48 | /* initiate reset */ | |
49 | timeout = 100000; | |
50 | wr_reg32(&jrp->rregs->jrcommand, JRCR_RESET); | |
51 | while ((rd_reg32(&jrp->rregs->jrcommand) & JRCR_RESET) && --timeout) | |
52 | cpu_relax(); | |
53 | ||
54 | if (timeout == 0) { | |
55 | dev_err(dev, "failed to reset job ring %d\n", jrp->ridx); | |
56 | return -EIO; | |
57 | } | |
58 | ||
59 | /* unmask interrupts */ | |
60 | clrbits32(&jrp->rregs->rconfig_lo, JRCFG_IMSK); | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | /* | |
66 | * Shutdown JobR independent of platform property code | |
67 | */ | |
68 | int caam_jr_shutdown(struct device *dev) | |
69 | { | |
70 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
71 | dma_addr_t inpbusaddr, outbusaddr; | |
72 | int ret; | |
73 | ||
74 | ret = caam_reset_hw_jr(dev); | |
75 | ||
76 | tasklet_kill(&jrp->irqtask); | |
77 | ||
78 | /* Release interrupt */ | |
79 | free_irq(jrp->irq, dev); | |
80 | ||
81 | /* Free rings */ | |
82 | inpbusaddr = rd_reg64(&jrp->rregs->inpring_base); | |
83 | outbusaddr = rd_reg64(&jrp->rregs->outring_base); | |
84 | dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH, | |
85 | jrp->inpring, inpbusaddr); | |
86 | dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH, | |
87 | jrp->outring, outbusaddr); | |
88 | kfree(jrp->entinfo); | |
89 | ||
90 | return ret; | |
91 | } | |
92 | ||
93 | static int caam_jr_remove(struct platform_device *pdev) | |
94 | { | |
95 | int ret; | |
96 | struct device *jrdev; | |
97 | struct caam_drv_private_jr *jrpriv; | |
98 | ||
99 | jrdev = &pdev->dev; | |
100 | jrpriv = dev_get_drvdata(jrdev); | |
101 | ||
102 | /* | |
07defbfb | 103 | * Return EBUSY if job ring already allocated. |
313ea293 | 104 | */ |
07defbfb | 105 | if (atomic_read(&jrpriv->tfm_count)) { |
313ea293 RG |
106 | dev_err(jrdev, "Device is busy\n"); |
107 | return -EBUSY; | |
108 | } | |
109 | ||
110 | /* Remove the node from Physical JobR list maintained by driver */ | |
111 | spin_lock(&driver_data.jr_alloc_lock); | |
112 | list_del(&jrpriv->list_node); | |
113 | spin_unlock(&driver_data.jr_alloc_lock); | |
114 | ||
115 | /* Release ring */ | |
116 | ret = caam_jr_shutdown(jrdev); | |
117 | if (ret) | |
118 | dev_err(jrdev, "Failed to shut down job ring\n"); | |
119 | irq_dispose_mapping(jrpriv->irq); | |
120 | ||
121 | return ret; | |
122 | } | |
123 | ||
8e8ec596 KP |
124 | /* Main per-ring interrupt handler */ |
125 | static irqreturn_t caam_jr_interrupt(int irq, void *st_dev) | |
126 | { | |
127 | struct device *dev = st_dev; | |
128 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
129 | u32 irqstate; | |
130 | ||
131 | /* | |
132 | * Check the output ring for ready responses, kick | |
133 | * tasklet if jobs done. | |
134 | */ | |
135 | irqstate = rd_reg32(&jrp->rregs->jrintstatus); | |
136 | if (!irqstate) | |
137 | return IRQ_NONE; | |
138 | ||
139 | /* | |
140 | * If JobR error, we got more development work to do | |
141 | * Flag a bug now, but we really need to shut down and | |
142 | * restart the queue (and fix code). | |
143 | */ | |
144 | if (irqstate & JRINT_JR_ERROR) { | |
145 | dev_err(dev, "job ring error: irqstate: %08x\n", irqstate); | |
146 | BUG(); | |
147 | } | |
148 | ||
149 | /* mask valid interrupts */ | |
150 | setbits32(&jrp->rregs->rconfig_lo, JRCFG_IMSK); | |
151 | ||
152 | /* Have valid interrupt at this point, just ACK and trigger */ | |
153 | wr_reg32(&jrp->rregs->jrintstatus, irqstate); | |
154 | ||
155 | preempt_disable(); | |
a0ca6ca0 | 156 | tasklet_schedule(&jrp->irqtask); |
8e8ec596 KP |
157 | preempt_enable(); |
158 | ||
159 | return IRQ_HANDLED; | |
160 | } | |
161 | ||
162 | /* Deferred service handler, run as interrupt-fired tasklet */ | |
163 | static void caam_jr_dequeue(unsigned long devarg) | |
164 | { | |
165 | int hw_idx, sw_idx, i, head, tail; | |
166 | struct device *dev = (struct device *)devarg; | |
167 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
168 | void (*usercall)(struct device *dev, u32 *desc, u32 status, void *arg); | |
169 | u32 *userdesc, userstatus; | |
170 | void *userarg; | |
8e8ec596 | 171 | |
a8ea07c2 | 172 | while (rd_reg32(&jrp->rregs->outring_used)) { |
8e8ec596 | 173 | |
a8ea07c2 | 174 | head = ACCESS_ONCE(jrp->head); |
8e8ec596 | 175 | |
ce026cb9 | 176 | spin_lock(&jrp->outlock); |
8e8ec596 | 177 | |
a8ea07c2 | 178 | sw_idx = tail = jrp->tail; |
8e8ec596 | 179 | hw_idx = jrp->out_ring_read_index; |
a8ea07c2 | 180 | |
8e8ec596 KP |
181 | for (i = 0; CIRC_CNT(head, tail + i, JOBR_DEPTH) >= 1; i++) { |
182 | sw_idx = (tail + i) & (JOBR_DEPTH - 1); | |
183 | ||
8e8ec596 KP |
184 | if (jrp->outring[hw_idx].desc == |
185 | jrp->entinfo[sw_idx].desc_addr_dma) | |
186 | break; /* found */ | |
187 | } | |
188 | /* we should never fail to find a matching descriptor */ | |
189 | BUG_ON(CIRC_CNT(head, tail + i, JOBR_DEPTH) <= 0); | |
190 | ||
191 | /* Unmap just-run descriptor so we can post-process */ | |
192 | dma_unmap_single(dev, jrp->outring[hw_idx].desc, | |
193 | jrp->entinfo[sw_idx].desc_size, | |
194 | DMA_TO_DEVICE); | |
195 | ||
196 | /* mark completed, avoid matching on a recycled desc addr */ | |
197 | jrp->entinfo[sw_idx].desc_addr_dma = 0; | |
198 | ||
199 | /* Stash callback params for use outside of lock */ | |
200 | usercall = jrp->entinfo[sw_idx].callbk; | |
201 | userarg = jrp->entinfo[sw_idx].cbkarg; | |
202 | userdesc = jrp->entinfo[sw_idx].desc_addr_virt; | |
203 | userstatus = jrp->outring[hw_idx].jrstatus; | |
204 | ||
e7472422 VM |
205 | /* |
206 | * Make sure all information from the job has been obtained | |
207 | * before telling CAAM that the job has been removed from the | |
208 | * output ring. | |
209 | */ | |
210 | mb(); | |
211 | ||
14a8e29c KP |
212 | /* set done */ |
213 | wr_reg32(&jrp->rregs->outring_rmvd, 1); | |
8e8ec596 KP |
214 | |
215 | jrp->out_ring_read_index = (jrp->out_ring_read_index + 1) & | |
216 | (JOBR_DEPTH - 1); | |
217 | ||
218 | /* | |
219 | * if this job completed out-of-order, do not increment | |
220 | * the tail. Otherwise, increment tail by 1 plus the | |
221 | * number of subsequent jobs already completed out-of-order | |
222 | */ | |
223 | if (sw_idx == tail) { | |
224 | do { | |
225 | tail = (tail + 1) & (JOBR_DEPTH - 1); | |
8e8ec596 KP |
226 | } while (CIRC_CNT(head, tail, JOBR_DEPTH) >= 1 && |
227 | jrp->entinfo[tail].desc_addr_dma == 0); | |
228 | ||
229 | jrp->tail = tail; | |
230 | } | |
231 | ||
ce026cb9 | 232 | spin_unlock(&jrp->outlock); |
8e8ec596 KP |
233 | |
234 | /* Finally, execute user's callback */ | |
235 | usercall(dev, userdesc, userstatus, userarg); | |
8e8ec596 KP |
236 | } |
237 | ||
8e8ec596 KP |
238 | /* reenable / unmask IRQs */ |
239 | clrbits32(&jrp->rregs->rconfig_lo, JRCFG_IMSK); | |
240 | } | |
241 | ||
07defbfb RG |
242 | /** |
243 | * caam_jr_alloc() - Alloc a job ring for someone to use as needed. | |
244 | * | |
245 | * returns : pointer to the newly allocated physical | |
246 | * JobR dev can be written to if successful. | |
247 | **/ | |
248 | struct device *caam_jr_alloc(void) | |
249 | { | |
250 | struct caam_drv_private_jr *jrpriv, *min_jrpriv = NULL; | |
251 | struct device *dev = NULL; | |
252 | int min_tfm_cnt = INT_MAX; | |
253 | int tfm_cnt; | |
254 | ||
255 | spin_lock(&driver_data.jr_alloc_lock); | |
256 | ||
257 | if (list_empty(&driver_data.jr_list)) { | |
258 | spin_unlock(&driver_data.jr_alloc_lock); | |
259 | return ERR_PTR(-ENODEV); | |
260 | } | |
261 | ||
262 | list_for_each_entry(jrpriv, &driver_data.jr_list, list_node) { | |
263 | tfm_cnt = atomic_read(&jrpriv->tfm_count); | |
264 | if (tfm_cnt < min_tfm_cnt) { | |
265 | min_tfm_cnt = tfm_cnt; | |
266 | min_jrpriv = jrpriv; | |
267 | } | |
268 | if (!min_tfm_cnt) | |
269 | break; | |
270 | } | |
271 | ||
272 | if (min_jrpriv) { | |
273 | atomic_inc(&min_jrpriv->tfm_count); | |
274 | dev = min_jrpriv->dev; | |
275 | } | |
276 | spin_unlock(&driver_data.jr_alloc_lock); | |
277 | ||
278 | return dev; | |
279 | } | |
280 | EXPORT_SYMBOL(caam_jr_alloc); | |
281 | ||
282 | /** | |
283 | * caam_jr_free() - Free the Job Ring | |
284 | * @rdev - points to the dev that identifies the Job ring to | |
285 | * be released. | |
286 | **/ | |
287 | void caam_jr_free(struct device *rdev) | |
288 | { | |
289 | struct caam_drv_private_jr *jrpriv = dev_get_drvdata(rdev); | |
290 | ||
291 | atomic_dec(&jrpriv->tfm_count); | |
292 | } | |
293 | EXPORT_SYMBOL(caam_jr_free); | |
294 | ||
8e8ec596 KP |
295 | /** |
296 | * caam_jr_enqueue() - Enqueue a job descriptor head. Returns 0 if OK, | |
297 | * -EBUSY if the queue is full, -EIO if it cannot map the caller's | |
298 | * descriptor. | |
299 | * @dev: device of the job ring to be used. This device should have | |
300 | * been assigned prior by caam_jr_register(). | |
301 | * @desc: points to a job descriptor that execute our request. All | |
302 | * descriptors (and all referenced data) must be in a DMAable | |
303 | * region, and all data references must be physical addresses | |
304 | * accessible to CAAM (i.e. within a PAMU window granted | |
305 | * to it). | |
306 | * @cbk: pointer to a callback function to be invoked upon completion | |
307 | * of this request. This has the form: | |
308 | * callback(struct device *dev, u32 *desc, u32 stat, void *arg) | |
309 | * where: | |
310 | * @dev: contains the job ring device that processed this | |
311 | * response. | |
312 | * @desc: descriptor that initiated the request, same as | |
313 | * "desc" being argued to caam_jr_enqueue(). | |
314 | * @status: untranslated status received from CAAM. See the | |
315 | * reference manual for a detailed description of | |
316 | * error meaning, or see the JRSTA definitions in the | |
317 | * register header file | |
318 | * @areq: optional pointer to an argument passed with the | |
319 | * original request | |
320 | * @areq: optional pointer to a user argument for use at callback | |
321 | * time. | |
322 | **/ | |
323 | int caam_jr_enqueue(struct device *dev, u32 *desc, | |
324 | void (*cbk)(struct device *dev, u32 *desc, | |
325 | u32 status, void *areq), | |
326 | void *areq) | |
327 | { | |
328 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
329 | struct caam_jrentry_info *head_entry; | |
8e8ec596 KP |
330 | int head, tail, desc_size; |
331 | dma_addr_t desc_dma; | |
332 | ||
333 | desc_size = (*desc & HDR_JD_LENGTH_MASK) * sizeof(u32); | |
334 | desc_dma = dma_map_single(dev, desc, desc_size, DMA_TO_DEVICE); | |
335 | if (dma_mapping_error(dev, desc_dma)) { | |
336 | dev_err(dev, "caam_jr_enqueue(): can't map jobdesc\n"); | |
337 | return -EIO; | |
338 | } | |
339 | ||
ce026cb9 | 340 | spin_lock_bh(&jrp->inplock); |
8e8ec596 KP |
341 | |
342 | head = jrp->head; | |
343 | tail = ACCESS_ONCE(jrp->tail); | |
344 | ||
345 | if (!rd_reg32(&jrp->rregs->inpring_avail) || | |
346 | CIRC_SPACE(head, tail, JOBR_DEPTH) <= 0) { | |
ce026cb9 | 347 | spin_unlock_bh(&jrp->inplock); |
8e8ec596 KP |
348 | dma_unmap_single(dev, desc_dma, desc_size, DMA_TO_DEVICE); |
349 | return -EBUSY; | |
350 | } | |
351 | ||
352 | head_entry = &jrp->entinfo[head]; | |
353 | head_entry->desc_addr_virt = desc; | |
354 | head_entry->desc_size = desc_size; | |
355 | head_entry->callbk = (void *)cbk; | |
356 | head_entry->cbkarg = areq; | |
357 | head_entry->desc_addr_dma = desc_dma; | |
358 | ||
359 | jrp->inpring[jrp->inp_ring_write_index] = desc_dma; | |
360 | ||
e7472422 VM |
361 | /* |
362 | * Guarantee that the descriptor's DMA address has been written to | |
363 | * the next slot in the ring before the write index is updated, since | |
364 | * other cores may update this index independently. | |
365 | */ | |
8e8ec596 KP |
366 | smp_wmb(); |
367 | ||
368 | jrp->inp_ring_write_index = (jrp->inp_ring_write_index + 1) & | |
369 | (JOBR_DEPTH - 1); | |
370 | jrp->head = (head + 1) & (JOBR_DEPTH - 1); | |
371 | ||
e7472422 VM |
372 | /* |
373 | * Ensure that all job information has been written before | |
374 | * notifying CAAM that a new job was added to the input ring. | |
375 | */ | |
376 | wmb(); | |
377 | ||
8e8ec596 KP |
378 | wr_reg32(&jrp->rregs->inpring_jobadd, 1); |
379 | ||
ce026cb9 | 380 | spin_unlock_bh(&jrp->inplock); |
8e8ec596 KP |
381 | |
382 | return 0; | |
383 | } | |
384 | EXPORT_SYMBOL(caam_jr_enqueue); | |
385 | ||
8e8ec596 KP |
386 | /* |
387 | * Init JobR independent of platform property detection | |
388 | */ | |
389 | static int caam_jr_init(struct device *dev) | |
390 | { | |
391 | struct caam_drv_private_jr *jrp; | |
392 | dma_addr_t inpbusaddr, outbusaddr; | |
393 | int i, error; | |
394 | ||
395 | jrp = dev_get_drvdata(dev); | |
396 | ||
a0ca6ca0 | 397 | tasklet_init(&jrp->irqtask, caam_jr_dequeue, (unsigned long)dev); |
9620fd95 | 398 | |
a0ca6ca0 | 399 | /* Connect job ring interrupt handler. */ |
9620fd95 | 400 | error = request_irq(jrp->irq, caam_jr_interrupt, IRQF_SHARED, |
313ea293 | 401 | dev_name(dev), dev); |
9620fd95 KP |
402 | if (error) { |
403 | dev_err(dev, "can't connect JobR %d interrupt (%d)\n", | |
404 | jrp->ridx, jrp->irq); | |
cbceeefd | 405 | goto out_kill_deq; |
9620fd95 KP |
406 | } |
407 | ||
8e8ec596 KP |
408 | error = caam_reset_hw_jr(dev); |
409 | if (error) | |
cbceeefd | 410 | goto out_free_irq; |
8e8ec596 | 411 | |
cbceeefd | 412 | error = -ENOMEM; |
9c4f9733 FE |
413 | jrp->inpring = dma_alloc_coherent(dev, sizeof(*jrp->inpring) * |
414 | JOBR_DEPTH, &inpbusaddr, GFP_KERNEL); | |
cbceeefd CS |
415 | if (!jrp->inpring) |
416 | goto out_free_irq; | |
1af8ea86 | 417 | |
9c4f9733 | 418 | jrp->outring = dma_alloc_coherent(dev, sizeof(*jrp->outring) * |
1af8ea86 | 419 | JOBR_DEPTH, &outbusaddr, GFP_KERNEL); |
cbceeefd CS |
420 | if (!jrp->outring) |
421 | goto out_free_inpring; | |
8e8ec596 | 422 | |
9c4f9733 | 423 | jrp->entinfo = kcalloc(JOBR_DEPTH, sizeof(*jrp->entinfo), GFP_KERNEL); |
cbceeefd CS |
424 | if (!jrp->entinfo) |
425 | goto out_free_outring; | |
8e8ec596 KP |
426 | |
427 | for (i = 0; i < JOBR_DEPTH; i++) | |
428 | jrp->entinfo[i].desc_addr_dma = !0; | |
429 | ||
430 | /* Setup rings */ | |
8e8ec596 KP |
431 | jrp->inp_ring_write_index = 0; |
432 | jrp->out_ring_read_index = 0; | |
433 | jrp->head = 0; | |
434 | jrp->tail = 0; | |
435 | ||
436 | wr_reg64(&jrp->rregs->inpring_base, inpbusaddr); | |
437 | wr_reg64(&jrp->rregs->outring_base, outbusaddr); | |
438 | wr_reg32(&jrp->rregs->inpring_size, JOBR_DEPTH); | |
439 | wr_reg32(&jrp->rregs->outring_size, JOBR_DEPTH); | |
440 | ||
441 | jrp->ringsize = JOBR_DEPTH; | |
442 | ||
443 | spin_lock_init(&jrp->inplock); | |
444 | spin_lock_init(&jrp->outlock); | |
445 | ||
446 | /* Select interrupt coalescing parameters */ | |
447 | setbits32(&jrp->rregs->rconfig_lo, JOBR_INTC | | |
448 | (JOBR_INTC_COUNT_THLD << JRCFG_ICDCT_SHIFT) | | |
449 | (JOBR_INTC_TIME_THLD << JRCFG_ICTT_SHIFT)); | |
450 | ||
8e8ec596 | 451 | return 0; |
cbceeefd CS |
452 | |
453 | out_free_outring: | |
454 | dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH, | |
455 | jrp->outring, outbusaddr); | |
456 | out_free_inpring: | |
457 | dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH, | |
458 | jrp->inpring, inpbusaddr); | |
459 | dev_err(dev, "can't allocate job rings for %d\n", jrp->ridx); | |
460 | out_free_irq: | |
461 | free_irq(jrp->irq, dev); | |
462 | out_kill_deq: | |
463 | tasklet_kill(&jrp->irqtask); | |
464 | return error; | |
8e8ec596 KP |
465 | } |
466 | ||
8e8ec596 KP |
467 | |
468 | /* | |
313ea293 | 469 | * Probe routine for each detected JobR subsystem. |
8e8ec596 | 470 | */ |
313ea293 | 471 | static int caam_jr_probe(struct platform_device *pdev) |
8e8ec596 | 472 | { |
313ea293 RG |
473 | struct device *jrdev; |
474 | struct device_node *nprop; | |
475 | struct caam_job_ring __iomem *ctrl; | |
8e8ec596 | 476 | struct caam_drv_private_jr *jrpriv; |
313ea293 | 477 | static int total_jobrs; |
8e8ec596 KP |
478 | int error; |
479 | ||
313ea293 | 480 | jrdev = &pdev->dev; |
9c4f9733 | 481 | jrpriv = devm_kmalloc(jrdev, sizeof(*jrpriv), GFP_KERNEL); |
313ea293 | 482 | if (!jrpriv) |
8e8ec596 | 483 | return -ENOMEM; |
8e8ec596 | 484 | |
313ea293 | 485 | dev_set_drvdata(jrdev, jrpriv); |
8e8ec596 | 486 | |
313ea293 RG |
487 | /* save ring identity relative to detection */ |
488 | jrpriv->ridx = total_jobrs++; | |
489 | ||
490 | nprop = pdev->dev.of_node; | |
491 | /* Get configuration properties from device tree */ | |
492 | /* First, get register page */ | |
493 | ctrl = of_iomap(nprop, 0); | |
494 | if (!ctrl) { | |
495 | dev_err(jrdev, "of_iomap() failed\n"); | |
496 | return -ENOMEM; | |
8e8ec596 | 497 | } |
3862de1f | 498 | |
313ea293 | 499 | jrpriv->rregs = (struct caam_job_ring __force *)ctrl; |
8e8ec596 | 500 | |
e13af18a | 501 | if (sizeof(dma_addr_t) == sizeof(u64)) |
313ea293 | 502 | if (of_device_is_compatible(nprop, "fsl,sec-v5.0-job-ring")) |
a2ac287e | 503 | dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(40)); |
e13af18a | 504 | else |
a2ac287e | 505 | dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(36)); |
e13af18a | 506 | else |
a2ac287e | 507 | dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(32)); |
e13af18a | 508 | |
8e8ec596 | 509 | /* Identify the interrupt */ |
26b265cd | 510 | jrpriv->irq = irq_of_parse_and_map(nprop, 0); |
8e8ec596 KP |
511 | |
512 | /* Now do the platform independent part */ | |
513 | error = caam_jr_init(jrdev); /* now turn on hardware */ | |
c6bf62e4 CS |
514 | if (error) { |
515 | irq_dispose_mapping(jrpriv->irq); | |
8e8ec596 | 516 | return error; |
c6bf62e4 | 517 | } |
8e8ec596 | 518 | |
313ea293 RG |
519 | jrpriv->dev = jrdev; |
520 | spin_lock(&driver_data.jr_alloc_lock); | |
521 | list_add_tail(&jrpriv->list_node, &driver_data.jr_list); | |
522 | spin_unlock(&driver_data.jr_alloc_lock); | |
523 | ||
07defbfb RG |
524 | atomic_set(&jrpriv->tfm_count, 0); |
525 | ||
313ea293 RG |
526 | return 0; |
527 | } | |
528 | ||
529 | static struct of_device_id caam_jr_match[] = { | |
530 | { | |
531 | .compatible = "fsl,sec-v4.0-job-ring", | |
532 | }, | |
533 | { | |
534 | .compatible = "fsl,sec4.0-job-ring", | |
535 | }, | |
536 | {}, | |
537 | }; | |
538 | MODULE_DEVICE_TABLE(of, caam_jr_match); | |
539 | ||
540 | static struct platform_driver caam_jr_driver = { | |
541 | .driver = { | |
542 | .name = "caam_jr", | |
313ea293 RG |
543 | .of_match_table = caam_jr_match, |
544 | }, | |
545 | .probe = caam_jr_probe, | |
546 | .remove = caam_jr_remove, | |
547 | }; | |
548 | ||
549 | static int __init jr_driver_init(void) | |
550 | { | |
551 | spin_lock_init(&driver_data.jr_alloc_lock); | |
552 | INIT_LIST_HEAD(&driver_data.jr_list); | |
553 | return platform_driver_register(&caam_jr_driver); | |
8e8ec596 | 554 | } |
313ea293 RG |
555 | |
556 | static void __exit jr_driver_exit(void) | |
557 | { | |
558 | platform_driver_unregister(&caam_jr_driver); | |
8e8ec596 | 559 | } |
313ea293 RG |
560 | |
561 | module_init(jr_driver_init); | |
562 | module_exit(jr_driver_exit); | |
563 | ||
564 | MODULE_LICENSE("GPL"); | |
565 | MODULE_DESCRIPTION("FSL CAAM JR request backend"); | |
566 | MODULE_AUTHOR("Freescale Semiconductor - NMG/STC"); |