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 | */ | |
261ea058 | 34 | clrsetbits_32(&jrp->rregs->rconfig_lo, 0, JRCFG_IMSK); |
313ea293 RG |
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 */ | |
261ea058 | 60 | clrsetbits_32(&jrp->rregs->rconfig_lo, JRCFG_IMSK, 0); |
313ea293 RG |
61 | |
62 | return 0; | |
63 | } | |
64 | ||
65 | /* | |
66 | * Shutdown JobR independent of platform property code | |
67 | */ | |
029c053c | 68 | static int caam_jr_shutdown(struct device *dev) |
313ea293 RG |
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 | ||
313ea293 RG |
76 | /* Release interrupt */ |
77 | free_irq(jrp->irq, dev); | |
78 | ||
79 | /* Free rings */ | |
80 | inpbusaddr = rd_reg64(&jrp->rregs->inpring_base); | |
81 | outbusaddr = rd_reg64(&jrp->rregs->outring_base); | |
82 | dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH, | |
83 | jrp->inpring, inpbusaddr); | |
84 | dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH, | |
85 | jrp->outring, outbusaddr); | |
86 | kfree(jrp->entinfo); | |
87 | ||
88 | return ret; | |
89 | } | |
90 | ||
91 | static int caam_jr_remove(struct platform_device *pdev) | |
92 | { | |
93 | int ret; | |
94 | struct device *jrdev; | |
95 | struct caam_drv_private_jr *jrpriv; | |
96 | ||
97 | jrdev = &pdev->dev; | |
98 | jrpriv = dev_get_drvdata(jrdev); | |
99 | ||
100 | /* | |
07defbfb | 101 | * Return EBUSY if job ring already allocated. |
313ea293 | 102 | */ |
07defbfb | 103 | if (atomic_read(&jrpriv->tfm_count)) { |
313ea293 RG |
104 | dev_err(jrdev, "Device is busy\n"); |
105 | return -EBUSY; | |
106 | } | |
107 | ||
108 | /* Remove the node from Physical JobR list maintained by driver */ | |
109 | spin_lock(&driver_data.jr_alloc_lock); | |
110 | list_del(&jrpriv->list_node); | |
111 | spin_unlock(&driver_data.jr_alloc_lock); | |
112 | ||
113 | /* Release ring */ | |
114 | ret = caam_jr_shutdown(jrdev); | |
115 | if (ret) | |
116 | dev_err(jrdev, "Failed to shut down job ring\n"); | |
117 | irq_dispose_mapping(jrpriv->irq); | |
118 | ||
119 | return ret; | |
120 | } | |
121 | ||
8e8ec596 KP |
122 | /* Main per-ring interrupt handler */ |
123 | static irqreturn_t caam_jr_interrupt(int irq, void *st_dev) | |
124 | { | |
125 | struct device *dev = st_dev; | |
126 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
127 | u32 irqstate; | |
128 | ||
129 | /* | |
130 | * Check the output ring for ready responses, kick | |
66d2e202 | 131 | * the threaded irq if jobs done. |
8e8ec596 KP |
132 | */ |
133 | irqstate = rd_reg32(&jrp->rregs->jrintstatus); | |
134 | if (!irqstate) | |
135 | return IRQ_NONE; | |
136 | ||
137 | /* | |
138 | * If JobR error, we got more development work to do | |
139 | * Flag a bug now, but we really need to shut down and | |
140 | * restart the queue (and fix code). | |
141 | */ | |
142 | if (irqstate & JRINT_JR_ERROR) { | |
143 | dev_err(dev, "job ring error: irqstate: %08x\n", irqstate); | |
144 | BUG(); | |
145 | } | |
146 | ||
147 | /* mask valid interrupts */ | |
261ea058 | 148 | clrsetbits_32(&jrp->rregs->rconfig_lo, 0, JRCFG_IMSK); |
8e8ec596 KP |
149 | |
150 | /* Have valid interrupt at this point, just ACK and trigger */ | |
151 | wr_reg32(&jrp->rregs->jrintstatus, irqstate); | |
152 | ||
66d2e202 | 153 | return IRQ_WAKE_THREAD; |
8e8ec596 KP |
154 | } |
155 | ||
66d2e202 | 156 | static irqreturn_t caam_jr_threadirq(int irq, void *st_dev) |
8e8ec596 KP |
157 | { |
158 | int hw_idx, sw_idx, i, head, tail; | |
66d2e202 | 159 | struct device *dev = st_dev; |
8e8ec596 KP |
160 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); |
161 | void (*usercall)(struct device *dev, u32 *desc, u32 status, void *arg); | |
162 | u32 *userdesc, userstatus; | |
163 | void *userarg; | |
8e8ec596 | 164 | |
a8ea07c2 | 165 | while (rd_reg32(&jrp->rregs->outring_used)) { |
8e8ec596 | 166 | |
a8ea07c2 | 167 | head = ACCESS_ONCE(jrp->head); |
8e8ec596 | 168 | |
ce026cb9 | 169 | spin_lock(&jrp->outlock); |
8e8ec596 | 170 | |
a8ea07c2 | 171 | sw_idx = tail = jrp->tail; |
8e8ec596 | 172 | hw_idx = jrp->out_ring_read_index; |
a8ea07c2 | 173 | |
8e8ec596 KP |
174 | for (i = 0; CIRC_CNT(head, tail + i, JOBR_DEPTH) >= 1; i++) { |
175 | sw_idx = (tail + i) & (JOBR_DEPTH - 1); | |
176 | ||
8e8ec596 | 177 | if (jrp->outring[hw_idx].desc == |
261ea058 | 178 | caam_dma_to_cpu(jrp->entinfo[sw_idx].desc_addr_dma)) |
8e8ec596 KP |
179 | break; /* found */ |
180 | } | |
181 | /* we should never fail to find a matching descriptor */ | |
182 | BUG_ON(CIRC_CNT(head, tail + i, JOBR_DEPTH) <= 0); | |
183 | ||
184 | /* Unmap just-run descriptor so we can post-process */ | |
185 | dma_unmap_single(dev, jrp->outring[hw_idx].desc, | |
186 | jrp->entinfo[sw_idx].desc_size, | |
187 | DMA_TO_DEVICE); | |
188 | ||
189 | /* mark completed, avoid matching on a recycled desc addr */ | |
190 | jrp->entinfo[sw_idx].desc_addr_dma = 0; | |
191 | ||
192 | /* Stash callback params for use outside of lock */ | |
193 | usercall = jrp->entinfo[sw_idx].callbk; | |
194 | userarg = jrp->entinfo[sw_idx].cbkarg; | |
195 | userdesc = jrp->entinfo[sw_idx].desc_addr_virt; | |
261ea058 | 196 | userstatus = caam32_to_cpu(jrp->outring[hw_idx].jrstatus); |
8e8ec596 | 197 | |
e7472422 VM |
198 | /* |
199 | * Make sure all information from the job has been obtained | |
200 | * before telling CAAM that the job has been removed from the | |
201 | * output ring. | |
202 | */ | |
203 | mb(); | |
204 | ||
14a8e29c KP |
205 | /* set done */ |
206 | wr_reg32(&jrp->rregs->outring_rmvd, 1); | |
8e8ec596 KP |
207 | |
208 | jrp->out_ring_read_index = (jrp->out_ring_read_index + 1) & | |
209 | (JOBR_DEPTH - 1); | |
210 | ||
211 | /* | |
212 | * if this job completed out-of-order, do not increment | |
213 | * the tail. Otherwise, increment tail by 1 plus the | |
214 | * number of subsequent jobs already completed out-of-order | |
215 | */ | |
216 | if (sw_idx == tail) { | |
217 | do { | |
218 | tail = (tail + 1) & (JOBR_DEPTH - 1); | |
8e8ec596 KP |
219 | } while (CIRC_CNT(head, tail, JOBR_DEPTH) >= 1 && |
220 | jrp->entinfo[tail].desc_addr_dma == 0); | |
221 | ||
222 | jrp->tail = tail; | |
223 | } | |
224 | ||
ce026cb9 | 225 | spin_unlock(&jrp->outlock); |
8e8ec596 KP |
226 | |
227 | /* Finally, execute user's callback */ | |
228 | usercall(dev, userdesc, userstatus, userarg); | |
8e8ec596 KP |
229 | } |
230 | ||
8e8ec596 | 231 | /* reenable / unmask IRQs */ |
261ea058 | 232 | clrsetbits_32(&jrp->rregs->rconfig_lo, JRCFG_IMSK, 0); |
66d2e202 RK |
233 | |
234 | return IRQ_HANDLED; | |
8e8ec596 KP |
235 | } |
236 | ||
07defbfb RG |
237 | /** |
238 | * caam_jr_alloc() - Alloc a job ring for someone to use as needed. | |
239 | * | |
240 | * returns : pointer to the newly allocated physical | |
241 | * JobR dev can be written to if successful. | |
242 | **/ | |
243 | struct device *caam_jr_alloc(void) | |
244 | { | |
245 | struct caam_drv_private_jr *jrpriv, *min_jrpriv = NULL; | |
e930c765 | 246 | struct device *dev = ERR_PTR(-ENODEV); |
07defbfb RG |
247 | int min_tfm_cnt = INT_MAX; |
248 | int tfm_cnt; | |
249 | ||
250 | spin_lock(&driver_data.jr_alloc_lock); | |
251 | ||
252 | if (list_empty(&driver_data.jr_list)) { | |
253 | spin_unlock(&driver_data.jr_alloc_lock); | |
254 | return ERR_PTR(-ENODEV); | |
255 | } | |
256 | ||
257 | list_for_each_entry(jrpriv, &driver_data.jr_list, list_node) { | |
258 | tfm_cnt = atomic_read(&jrpriv->tfm_count); | |
259 | if (tfm_cnt < min_tfm_cnt) { | |
260 | min_tfm_cnt = tfm_cnt; | |
261 | min_jrpriv = jrpriv; | |
262 | } | |
263 | if (!min_tfm_cnt) | |
264 | break; | |
265 | } | |
266 | ||
267 | if (min_jrpriv) { | |
268 | atomic_inc(&min_jrpriv->tfm_count); | |
269 | dev = min_jrpriv->dev; | |
270 | } | |
271 | spin_unlock(&driver_data.jr_alloc_lock); | |
272 | ||
273 | return dev; | |
274 | } | |
275 | EXPORT_SYMBOL(caam_jr_alloc); | |
276 | ||
277 | /** | |
278 | * caam_jr_free() - Free the Job Ring | |
279 | * @rdev - points to the dev that identifies the Job ring to | |
280 | * be released. | |
281 | **/ | |
282 | void caam_jr_free(struct device *rdev) | |
283 | { | |
284 | struct caam_drv_private_jr *jrpriv = dev_get_drvdata(rdev); | |
285 | ||
286 | atomic_dec(&jrpriv->tfm_count); | |
287 | } | |
288 | EXPORT_SYMBOL(caam_jr_free); | |
289 | ||
8e8ec596 KP |
290 | /** |
291 | * caam_jr_enqueue() - Enqueue a job descriptor head. Returns 0 if OK, | |
292 | * -EBUSY if the queue is full, -EIO if it cannot map the caller's | |
293 | * descriptor. | |
294 | * @dev: device of the job ring to be used. This device should have | |
295 | * been assigned prior by caam_jr_register(). | |
296 | * @desc: points to a job descriptor that execute our request. All | |
297 | * descriptors (and all referenced data) must be in a DMAable | |
298 | * region, and all data references must be physical addresses | |
299 | * accessible to CAAM (i.e. within a PAMU window granted | |
300 | * to it). | |
301 | * @cbk: pointer to a callback function to be invoked upon completion | |
302 | * of this request. This has the form: | |
303 | * callback(struct device *dev, u32 *desc, u32 stat, void *arg) | |
304 | * where: | |
305 | * @dev: contains the job ring device that processed this | |
306 | * response. | |
307 | * @desc: descriptor that initiated the request, same as | |
308 | * "desc" being argued to caam_jr_enqueue(). | |
309 | * @status: untranslated status received from CAAM. See the | |
310 | * reference manual for a detailed description of | |
311 | * error meaning, or see the JRSTA definitions in the | |
312 | * register header file | |
313 | * @areq: optional pointer to an argument passed with the | |
314 | * original request | |
315 | * @areq: optional pointer to a user argument for use at callback | |
316 | * time. | |
317 | **/ | |
318 | int caam_jr_enqueue(struct device *dev, u32 *desc, | |
319 | void (*cbk)(struct device *dev, u32 *desc, | |
320 | u32 status, void *areq), | |
321 | void *areq) | |
322 | { | |
323 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
324 | struct caam_jrentry_info *head_entry; | |
8e8ec596 KP |
325 | int head, tail, desc_size; |
326 | dma_addr_t desc_dma; | |
327 | ||
261ea058 | 328 | desc_size = (caam32_to_cpu(*desc) & HDR_JD_LENGTH_MASK) * sizeof(u32); |
8e8ec596 KP |
329 | desc_dma = dma_map_single(dev, desc, desc_size, DMA_TO_DEVICE); |
330 | if (dma_mapping_error(dev, desc_dma)) { | |
331 | dev_err(dev, "caam_jr_enqueue(): can't map jobdesc\n"); | |
332 | return -EIO; | |
333 | } | |
334 | ||
ce026cb9 | 335 | spin_lock_bh(&jrp->inplock); |
8e8ec596 KP |
336 | |
337 | head = jrp->head; | |
338 | tail = ACCESS_ONCE(jrp->tail); | |
339 | ||
340 | if (!rd_reg32(&jrp->rregs->inpring_avail) || | |
341 | CIRC_SPACE(head, tail, JOBR_DEPTH) <= 0) { | |
ce026cb9 | 342 | spin_unlock_bh(&jrp->inplock); |
8e8ec596 KP |
343 | dma_unmap_single(dev, desc_dma, desc_size, DMA_TO_DEVICE); |
344 | return -EBUSY; | |
345 | } | |
346 | ||
347 | head_entry = &jrp->entinfo[head]; | |
348 | head_entry->desc_addr_virt = desc; | |
349 | head_entry->desc_size = desc_size; | |
350 | head_entry->callbk = (void *)cbk; | |
351 | head_entry->cbkarg = areq; | |
352 | head_entry->desc_addr_dma = desc_dma; | |
353 | ||
261ea058 | 354 | jrp->inpring[jrp->inp_ring_write_index] = cpu_to_caam_dma(desc_dma); |
8e8ec596 | 355 | |
e7472422 VM |
356 | /* |
357 | * Guarantee that the descriptor's DMA address has been written to | |
358 | * the next slot in the ring before the write index is updated, since | |
359 | * other cores may update this index independently. | |
360 | */ | |
8e8ec596 KP |
361 | smp_wmb(); |
362 | ||
363 | jrp->inp_ring_write_index = (jrp->inp_ring_write_index + 1) & | |
364 | (JOBR_DEPTH - 1); | |
365 | jrp->head = (head + 1) & (JOBR_DEPTH - 1); | |
366 | ||
e7472422 VM |
367 | /* |
368 | * Ensure that all job information has been written before | |
369 | * notifying CAAM that a new job was added to the input ring. | |
370 | */ | |
371 | wmb(); | |
372 | ||
8e8ec596 KP |
373 | wr_reg32(&jrp->rregs->inpring_jobadd, 1); |
374 | ||
ce026cb9 | 375 | spin_unlock_bh(&jrp->inplock); |
8e8ec596 KP |
376 | |
377 | return 0; | |
378 | } | |
379 | EXPORT_SYMBOL(caam_jr_enqueue); | |
380 | ||
8e8ec596 KP |
381 | /* |
382 | * Init JobR independent of platform property detection | |
383 | */ | |
384 | static int caam_jr_init(struct device *dev) | |
385 | { | |
386 | struct caam_drv_private_jr *jrp; | |
387 | dma_addr_t inpbusaddr, outbusaddr; | |
388 | int i, error; | |
389 | ||
390 | jrp = dev_get_drvdata(dev); | |
391 | ||
a0ca6ca0 | 392 | /* Connect job ring interrupt handler. */ |
66d2e202 RK |
393 | error = request_threaded_irq(jrp->irq, caam_jr_interrupt, |
394 | caam_jr_threadirq, IRQF_SHARED, | |
395 | dev_name(dev), dev); | |
9620fd95 KP |
396 | if (error) { |
397 | dev_err(dev, "can't connect JobR %d interrupt (%d)\n", | |
398 | jrp->ridx, jrp->irq); | |
cbceeefd | 399 | goto out_kill_deq; |
9620fd95 KP |
400 | } |
401 | ||
8e8ec596 KP |
402 | error = caam_reset_hw_jr(dev); |
403 | if (error) | |
cbceeefd | 404 | goto out_free_irq; |
8e8ec596 | 405 | |
cbceeefd | 406 | error = -ENOMEM; |
9c4f9733 FE |
407 | jrp->inpring = dma_alloc_coherent(dev, sizeof(*jrp->inpring) * |
408 | JOBR_DEPTH, &inpbusaddr, GFP_KERNEL); | |
cbceeefd CS |
409 | if (!jrp->inpring) |
410 | goto out_free_irq; | |
1af8ea86 | 411 | |
9c4f9733 | 412 | jrp->outring = dma_alloc_coherent(dev, sizeof(*jrp->outring) * |
1af8ea86 | 413 | JOBR_DEPTH, &outbusaddr, GFP_KERNEL); |
cbceeefd CS |
414 | if (!jrp->outring) |
415 | goto out_free_inpring; | |
8e8ec596 | 416 | |
9c4f9733 | 417 | jrp->entinfo = kcalloc(JOBR_DEPTH, sizeof(*jrp->entinfo), GFP_KERNEL); |
cbceeefd CS |
418 | if (!jrp->entinfo) |
419 | goto out_free_outring; | |
8e8ec596 KP |
420 | |
421 | for (i = 0; i < JOBR_DEPTH; i++) | |
422 | jrp->entinfo[i].desc_addr_dma = !0; | |
423 | ||
424 | /* Setup rings */ | |
8e8ec596 KP |
425 | jrp->inp_ring_write_index = 0; |
426 | jrp->out_ring_read_index = 0; | |
427 | jrp->head = 0; | |
428 | jrp->tail = 0; | |
429 | ||
430 | wr_reg64(&jrp->rregs->inpring_base, inpbusaddr); | |
431 | wr_reg64(&jrp->rregs->outring_base, outbusaddr); | |
432 | wr_reg32(&jrp->rregs->inpring_size, JOBR_DEPTH); | |
433 | wr_reg32(&jrp->rregs->outring_size, JOBR_DEPTH); | |
434 | ||
435 | jrp->ringsize = JOBR_DEPTH; | |
436 | ||
437 | spin_lock_init(&jrp->inplock); | |
438 | spin_lock_init(&jrp->outlock); | |
439 | ||
440 | /* Select interrupt coalescing parameters */ | |
261ea058 HG |
441 | clrsetbits_32(&jrp->rregs->rconfig_lo, 0, JOBR_INTC | |
442 | (JOBR_INTC_COUNT_THLD << JRCFG_ICDCT_SHIFT) | | |
443 | (JOBR_INTC_TIME_THLD << JRCFG_ICTT_SHIFT)); | |
8e8ec596 | 444 | |
8e8ec596 | 445 | return 0; |
cbceeefd CS |
446 | |
447 | out_free_outring: | |
448 | dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH, | |
449 | jrp->outring, outbusaddr); | |
450 | out_free_inpring: | |
451 | dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH, | |
452 | jrp->inpring, inpbusaddr); | |
453 | dev_err(dev, "can't allocate job rings for %d\n", jrp->ridx); | |
454 | out_free_irq: | |
455 | free_irq(jrp->irq, dev); | |
456 | out_kill_deq: | |
cbceeefd | 457 | return error; |
8e8ec596 KP |
458 | } |
459 | ||
8e8ec596 KP |
460 | |
461 | /* | |
313ea293 | 462 | * Probe routine for each detected JobR subsystem. |
8e8ec596 | 463 | */ |
313ea293 | 464 | static int caam_jr_probe(struct platform_device *pdev) |
8e8ec596 | 465 | { |
313ea293 RG |
466 | struct device *jrdev; |
467 | struct device_node *nprop; | |
468 | struct caam_job_ring __iomem *ctrl; | |
8e8ec596 | 469 | struct caam_drv_private_jr *jrpriv; |
313ea293 | 470 | static int total_jobrs; |
8e8ec596 KP |
471 | int error; |
472 | ||
313ea293 | 473 | jrdev = &pdev->dev; |
9c4f9733 | 474 | jrpriv = devm_kmalloc(jrdev, sizeof(*jrpriv), GFP_KERNEL); |
313ea293 | 475 | if (!jrpriv) |
8e8ec596 | 476 | return -ENOMEM; |
8e8ec596 | 477 | |
313ea293 | 478 | dev_set_drvdata(jrdev, jrpriv); |
8e8ec596 | 479 | |
313ea293 RG |
480 | /* save ring identity relative to detection */ |
481 | jrpriv->ridx = total_jobrs++; | |
482 | ||
483 | nprop = pdev->dev.of_node; | |
484 | /* Get configuration properties from device tree */ | |
485 | /* First, get register page */ | |
486 | ctrl = of_iomap(nprop, 0); | |
487 | if (!ctrl) { | |
488 | dev_err(jrdev, "of_iomap() failed\n"); | |
489 | return -ENOMEM; | |
8e8ec596 | 490 | } |
3862de1f | 491 | |
313ea293 | 492 | jrpriv->rregs = (struct caam_job_ring __force *)ctrl; |
8e8ec596 | 493 | |
e13af18a | 494 | if (sizeof(dma_addr_t) == sizeof(u64)) |
313ea293 | 495 | if (of_device_is_compatible(nprop, "fsl,sec-v5.0-job-ring")) |
a2ac287e | 496 | dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(40)); |
e13af18a | 497 | else |
a2ac287e | 498 | dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(36)); |
e13af18a | 499 | else |
a2ac287e | 500 | dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(32)); |
e13af18a | 501 | |
8e8ec596 | 502 | /* Identify the interrupt */ |
26b265cd | 503 | jrpriv->irq = irq_of_parse_and_map(nprop, 0); |
8e8ec596 KP |
504 | |
505 | /* Now do the platform independent part */ | |
506 | error = caam_jr_init(jrdev); /* now turn on hardware */ | |
c6bf62e4 CS |
507 | if (error) { |
508 | irq_dispose_mapping(jrpriv->irq); | |
8e8ec596 | 509 | return error; |
c6bf62e4 | 510 | } |
8e8ec596 | 511 | |
313ea293 RG |
512 | jrpriv->dev = jrdev; |
513 | spin_lock(&driver_data.jr_alloc_lock); | |
514 | list_add_tail(&jrpriv->list_node, &driver_data.jr_list); | |
515 | spin_unlock(&driver_data.jr_alloc_lock); | |
516 | ||
07defbfb RG |
517 | atomic_set(&jrpriv->tfm_count, 0); |
518 | ||
313ea293 RG |
519 | return 0; |
520 | } | |
521 | ||
522 | static struct of_device_id caam_jr_match[] = { | |
523 | { | |
524 | .compatible = "fsl,sec-v4.0-job-ring", | |
525 | }, | |
526 | { | |
527 | .compatible = "fsl,sec4.0-job-ring", | |
528 | }, | |
529 | {}, | |
530 | }; | |
531 | MODULE_DEVICE_TABLE(of, caam_jr_match); | |
532 | ||
533 | static struct platform_driver caam_jr_driver = { | |
534 | .driver = { | |
535 | .name = "caam_jr", | |
313ea293 RG |
536 | .of_match_table = caam_jr_match, |
537 | }, | |
538 | .probe = caam_jr_probe, | |
539 | .remove = caam_jr_remove, | |
540 | }; | |
541 | ||
542 | static int __init jr_driver_init(void) | |
543 | { | |
544 | spin_lock_init(&driver_data.jr_alloc_lock); | |
545 | INIT_LIST_HEAD(&driver_data.jr_list); | |
546 | return platform_driver_register(&caam_jr_driver); | |
8e8ec596 | 547 | } |
313ea293 RG |
548 | |
549 | static void __exit jr_driver_exit(void) | |
550 | { | |
551 | platform_driver_unregister(&caam_jr_driver); | |
8e8ec596 | 552 | } |
313ea293 RG |
553 | |
554 | module_init(jr_driver_init); | |
555 | module_exit(jr_driver_exit); | |
556 | ||
557 | MODULE_LICENSE("GPL"); | |
558 | MODULE_DESCRIPTION("FSL CAAM JR request backend"); | |
559 | MODULE_AUTHOR("Freescale Semiconductor - NMG/STC"); |