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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 | 11 | #include "compat.h" |
297b9ceb | 12 | #include "ctrl.h" |
8e8ec596 KP |
13 | #include "regs.h" |
14 | #include "jr.h" | |
15 | #include "desc.h" | |
16 | #include "intern.h" | |
17 | ||
313ea293 RG |
18 | struct jr_driver_data { |
19 | /* List of Physical JobR's with the Driver */ | |
20 | struct list_head jr_list; | |
21 | spinlock_t jr_alloc_lock; /* jr_list lock */ | |
22 | } ____cacheline_aligned; | |
23 | ||
24 | static struct jr_driver_data driver_data; | |
25 | ||
26 | static int caam_reset_hw_jr(struct device *dev) | |
27 | { | |
28 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
29 | unsigned int timeout = 100000; | |
30 | ||
31 | /* | |
32 | * mask interrupts since we are going to poll | |
33 | * for reset completion status | |
34 | */ | |
261ea058 | 35 | clrsetbits_32(&jrp->rregs->rconfig_lo, 0, JRCFG_IMSK); |
313ea293 RG |
36 | |
37 | /* initiate flush (required prior to reset) */ | |
38 | wr_reg32(&jrp->rregs->jrcommand, JRCR_RESET); | |
39 | while (((rd_reg32(&jrp->rregs->jrintstatus) & JRINT_ERR_HALT_MASK) == | |
40 | JRINT_ERR_HALT_INPROGRESS) && --timeout) | |
41 | cpu_relax(); | |
42 | ||
43 | if ((rd_reg32(&jrp->rregs->jrintstatus) & JRINT_ERR_HALT_MASK) != | |
44 | JRINT_ERR_HALT_COMPLETE || timeout == 0) { | |
45 | dev_err(dev, "failed to flush job ring %d\n", jrp->ridx); | |
46 | return -EIO; | |
47 | } | |
48 | ||
49 | /* initiate reset */ | |
50 | timeout = 100000; | |
51 | wr_reg32(&jrp->rregs->jrcommand, JRCR_RESET); | |
52 | while ((rd_reg32(&jrp->rregs->jrcommand) & JRCR_RESET) && --timeout) | |
53 | cpu_relax(); | |
54 | ||
55 | if (timeout == 0) { | |
56 | dev_err(dev, "failed to reset job ring %d\n", jrp->ridx); | |
57 | return -EIO; | |
58 | } | |
59 | ||
60 | /* unmask interrupts */ | |
261ea058 | 61 | clrsetbits_32(&jrp->rregs->rconfig_lo, JRCFG_IMSK, 0); |
313ea293 RG |
62 | |
63 | return 0; | |
64 | } | |
65 | ||
66 | /* | |
67 | * Shutdown JobR independent of platform property code | |
68 | */ | |
029c053c | 69 | static int caam_jr_shutdown(struct device *dev) |
313ea293 RG |
70 | { |
71 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
72 | dma_addr_t inpbusaddr, outbusaddr; | |
73 | int ret; | |
74 | ||
75 | ret = caam_reset_hw_jr(dev); | |
76 | ||
2b163b5b HG |
77 | tasklet_kill(&jrp->irqtask); |
78 | ||
313ea293 RG |
79 | /* Release interrupt */ |
80 | free_irq(jrp->irq, dev); | |
81 | ||
82 | /* Free rings */ | |
83 | inpbusaddr = rd_reg64(&jrp->rregs->inpring_base); | |
84 | outbusaddr = rd_reg64(&jrp->rregs->outring_base); | |
85 | dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH, | |
86 | jrp->inpring, inpbusaddr); | |
87 | dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH, | |
88 | jrp->outring, outbusaddr); | |
89 | kfree(jrp->entinfo); | |
90 | ||
91 | return ret; | |
92 | } | |
93 | ||
94 | static int caam_jr_remove(struct platform_device *pdev) | |
95 | { | |
96 | int ret; | |
97 | struct device *jrdev; | |
98 | struct caam_drv_private_jr *jrpriv; | |
99 | ||
100 | jrdev = &pdev->dev; | |
101 | jrpriv = dev_get_drvdata(jrdev); | |
102 | ||
103 | /* | |
07defbfb | 104 | * Return EBUSY if job ring already allocated. |
313ea293 | 105 | */ |
07defbfb | 106 | if (atomic_read(&jrpriv->tfm_count)) { |
313ea293 RG |
107 | dev_err(jrdev, "Device is busy\n"); |
108 | return -EBUSY; | |
109 | } | |
110 | ||
111 | /* Remove the node from Physical JobR list maintained by driver */ | |
112 | spin_lock(&driver_data.jr_alloc_lock); | |
113 | list_del(&jrpriv->list_node); | |
114 | spin_unlock(&driver_data.jr_alloc_lock); | |
115 | ||
116 | /* Release ring */ | |
117 | ret = caam_jr_shutdown(jrdev); | |
118 | if (ret) | |
119 | dev_err(jrdev, "Failed to shut down job ring\n"); | |
120 | irq_dispose_mapping(jrpriv->irq); | |
121 | ||
122 | return ret; | |
123 | } | |
124 | ||
8e8ec596 KP |
125 | /* Main per-ring interrupt handler */ |
126 | static irqreturn_t caam_jr_interrupt(int irq, void *st_dev) | |
127 | { | |
128 | struct device *dev = st_dev; | |
129 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
130 | u32 irqstate; | |
131 | ||
132 | /* | |
133 | * Check the output ring for ready responses, kick | |
2b163b5b | 134 | * tasklet if jobs done. |
8e8ec596 KP |
135 | */ |
136 | irqstate = rd_reg32(&jrp->rregs->jrintstatus); | |
137 | if (!irqstate) | |
138 | return IRQ_NONE; | |
139 | ||
140 | /* | |
141 | * If JobR error, we got more development work to do | |
142 | * Flag a bug now, but we really need to shut down and | |
143 | * restart the queue (and fix code). | |
144 | */ | |
145 | if (irqstate & JRINT_JR_ERROR) { | |
146 | dev_err(dev, "job ring error: irqstate: %08x\n", irqstate); | |
147 | BUG(); | |
148 | } | |
149 | ||
150 | /* mask valid interrupts */ | |
261ea058 | 151 | clrsetbits_32(&jrp->rregs->rconfig_lo, 0, JRCFG_IMSK); |
8e8ec596 KP |
152 | |
153 | /* Have valid interrupt at this point, just ACK and trigger */ | |
154 | wr_reg32(&jrp->rregs->jrintstatus, irqstate); | |
155 | ||
2b163b5b HG |
156 | preempt_disable(); |
157 | tasklet_schedule(&jrp->irqtask); | |
158 | preempt_enable(); | |
159 | ||
160 | return IRQ_HANDLED; | |
8e8ec596 KP |
161 | } |
162 | ||
2b163b5b HG |
163 | /* Deferred service handler, run as interrupt-fired tasklet */ |
164 | static void caam_jr_dequeue(unsigned long devarg) | |
8e8ec596 KP |
165 | { |
166 | int hw_idx, sw_idx, i, head, tail; | |
2b163b5b | 167 | struct device *dev = (struct device *)devarg; |
8e8ec596 KP |
168 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); |
169 | void (*usercall)(struct device *dev, u32 *desc, u32 status, void *arg); | |
170 | u32 *userdesc, userstatus; | |
171 | void *userarg; | |
8e8ec596 | 172 | |
a8ea07c2 | 173 | while (rd_reg32(&jrp->rregs->outring_used)) { |
8e8ec596 | 174 | |
6aa7de05 | 175 | head = READ_ONCE(jrp->head); |
8e8ec596 | 176 | |
ce026cb9 | 177 | spin_lock(&jrp->outlock); |
8e8ec596 | 178 | |
a8ea07c2 | 179 | sw_idx = tail = jrp->tail; |
8e8ec596 | 180 | hw_idx = jrp->out_ring_read_index; |
a8ea07c2 | 181 | |
8e8ec596 KP |
182 | for (i = 0; CIRC_CNT(head, tail + i, JOBR_DEPTH) >= 1; i++) { |
183 | sw_idx = (tail + i) & (JOBR_DEPTH - 1); | |
184 | ||
8e8ec596 | 185 | if (jrp->outring[hw_idx].desc == |
261ea058 | 186 | caam_dma_to_cpu(jrp->entinfo[sw_idx].desc_addr_dma)) |
8e8ec596 KP |
187 | break; /* found */ |
188 | } | |
189 | /* we should never fail to find a matching descriptor */ | |
190 | BUG_ON(CIRC_CNT(head, tail + i, JOBR_DEPTH) <= 0); | |
191 | ||
192 | /* Unmap just-run descriptor so we can post-process */ | |
193 | dma_unmap_single(dev, jrp->outring[hw_idx].desc, | |
194 | jrp->entinfo[sw_idx].desc_size, | |
195 | DMA_TO_DEVICE); | |
196 | ||
197 | /* mark completed, avoid matching on a recycled desc addr */ | |
198 | jrp->entinfo[sw_idx].desc_addr_dma = 0; | |
199 | ||
200 | /* Stash callback params for use outside of lock */ | |
201 | usercall = jrp->entinfo[sw_idx].callbk; | |
202 | userarg = jrp->entinfo[sw_idx].cbkarg; | |
203 | userdesc = jrp->entinfo[sw_idx].desc_addr_virt; | |
261ea058 | 204 | userstatus = caam32_to_cpu(jrp->outring[hw_idx].jrstatus); |
8e8ec596 | 205 | |
e7472422 VM |
206 | /* |
207 | * Make sure all information from the job has been obtained | |
208 | * before telling CAAM that the job has been removed from the | |
209 | * output ring. | |
210 | */ | |
211 | mb(); | |
212 | ||
14a8e29c KP |
213 | /* set done */ |
214 | wr_reg32(&jrp->rregs->outring_rmvd, 1); | |
8e8ec596 KP |
215 | |
216 | jrp->out_ring_read_index = (jrp->out_ring_read_index + 1) & | |
217 | (JOBR_DEPTH - 1); | |
218 | ||
219 | /* | |
220 | * if this job completed out-of-order, do not increment | |
221 | * the tail. Otherwise, increment tail by 1 plus the | |
222 | * number of subsequent jobs already completed out-of-order | |
223 | */ | |
224 | if (sw_idx == tail) { | |
225 | do { | |
226 | tail = (tail + 1) & (JOBR_DEPTH - 1); | |
8e8ec596 KP |
227 | } while (CIRC_CNT(head, tail, JOBR_DEPTH) >= 1 && |
228 | jrp->entinfo[tail].desc_addr_dma == 0); | |
229 | ||
230 | jrp->tail = tail; | |
231 | } | |
232 | ||
ce026cb9 | 233 | spin_unlock(&jrp->outlock); |
8e8ec596 KP |
234 | |
235 | /* Finally, execute user's callback */ | |
236 | usercall(dev, userdesc, userstatus, userarg); | |
8e8ec596 KP |
237 | } |
238 | ||
8e8ec596 | 239 | /* reenable / unmask IRQs */ |
261ea058 | 240 | clrsetbits_32(&jrp->rregs->rconfig_lo, JRCFG_IMSK, 0); |
8e8ec596 KP |
241 | } |
242 | ||
07defbfb RG |
243 | /** |
244 | * caam_jr_alloc() - Alloc a job ring for someone to use as needed. | |
245 | * | |
246 | * returns : pointer to the newly allocated physical | |
247 | * JobR dev can be written to if successful. | |
248 | **/ | |
249 | struct device *caam_jr_alloc(void) | |
250 | { | |
251 | struct caam_drv_private_jr *jrpriv, *min_jrpriv = NULL; | |
e930c765 | 252 | struct device *dev = ERR_PTR(-ENODEV); |
07defbfb RG |
253 | int min_tfm_cnt = INT_MAX; |
254 | int tfm_cnt; | |
255 | ||
256 | spin_lock(&driver_data.jr_alloc_lock); | |
257 | ||
258 | if (list_empty(&driver_data.jr_list)) { | |
259 | spin_unlock(&driver_data.jr_alloc_lock); | |
260 | return ERR_PTR(-ENODEV); | |
261 | } | |
262 | ||
263 | list_for_each_entry(jrpriv, &driver_data.jr_list, list_node) { | |
264 | tfm_cnt = atomic_read(&jrpriv->tfm_count); | |
265 | if (tfm_cnt < min_tfm_cnt) { | |
266 | min_tfm_cnt = tfm_cnt; | |
267 | min_jrpriv = jrpriv; | |
268 | } | |
269 | if (!min_tfm_cnt) | |
270 | break; | |
271 | } | |
272 | ||
273 | if (min_jrpriv) { | |
274 | atomic_inc(&min_jrpriv->tfm_count); | |
275 | dev = min_jrpriv->dev; | |
276 | } | |
277 | spin_unlock(&driver_data.jr_alloc_lock); | |
278 | ||
279 | return dev; | |
280 | } | |
281 | EXPORT_SYMBOL(caam_jr_alloc); | |
282 | ||
283 | /** | |
284 | * caam_jr_free() - Free the Job Ring | |
285 | * @rdev - points to the dev that identifies the Job ring to | |
286 | * be released. | |
287 | **/ | |
288 | void caam_jr_free(struct device *rdev) | |
289 | { | |
290 | struct caam_drv_private_jr *jrpriv = dev_get_drvdata(rdev); | |
291 | ||
292 | atomic_dec(&jrpriv->tfm_count); | |
293 | } | |
294 | EXPORT_SYMBOL(caam_jr_free); | |
295 | ||
8e8ec596 KP |
296 | /** |
297 | * caam_jr_enqueue() - Enqueue a job descriptor head. Returns 0 if OK, | |
298 | * -EBUSY if the queue is full, -EIO if it cannot map the caller's | |
299 | * descriptor. | |
300 | * @dev: device of the job ring to be used. This device should have | |
301 | * been assigned prior by caam_jr_register(). | |
302 | * @desc: points to a job descriptor that execute our request. All | |
303 | * descriptors (and all referenced data) must be in a DMAable | |
304 | * region, and all data references must be physical addresses | |
305 | * accessible to CAAM (i.e. within a PAMU window granted | |
306 | * to it). | |
307 | * @cbk: pointer to a callback function to be invoked upon completion | |
308 | * of this request. This has the form: | |
309 | * callback(struct device *dev, u32 *desc, u32 stat, void *arg) | |
310 | * where: | |
311 | * @dev: contains the job ring device that processed this | |
312 | * response. | |
313 | * @desc: descriptor that initiated the request, same as | |
314 | * "desc" being argued to caam_jr_enqueue(). | |
315 | * @status: untranslated status received from CAAM. See the | |
316 | * reference manual for a detailed description of | |
317 | * error meaning, or see the JRSTA definitions in the | |
318 | * register header file | |
319 | * @areq: optional pointer to an argument passed with the | |
320 | * original request | |
321 | * @areq: optional pointer to a user argument for use at callback | |
322 | * time. | |
323 | **/ | |
324 | int caam_jr_enqueue(struct device *dev, u32 *desc, | |
325 | void (*cbk)(struct device *dev, u32 *desc, | |
326 | u32 status, void *areq), | |
327 | void *areq) | |
328 | { | |
329 | struct caam_drv_private_jr *jrp = dev_get_drvdata(dev); | |
330 | struct caam_jrentry_info *head_entry; | |
8e8ec596 KP |
331 | int head, tail, desc_size; |
332 | dma_addr_t desc_dma; | |
333 | ||
261ea058 | 334 | desc_size = (caam32_to_cpu(*desc) & HDR_JD_LENGTH_MASK) * sizeof(u32); |
8e8ec596 KP |
335 | desc_dma = dma_map_single(dev, desc, desc_size, DMA_TO_DEVICE); |
336 | if (dma_mapping_error(dev, desc_dma)) { | |
337 | dev_err(dev, "caam_jr_enqueue(): can't map jobdesc\n"); | |
338 | return -EIO; | |
339 | } | |
340 | ||
ce026cb9 | 341 | spin_lock_bh(&jrp->inplock); |
8e8ec596 KP |
342 | |
343 | head = jrp->head; | |
6aa7de05 | 344 | tail = READ_ONCE(jrp->tail); |
8e8ec596 KP |
345 | |
346 | if (!rd_reg32(&jrp->rregs->inpring_avail) || | |
347 | CIRC_SPACE(head, tail, JOBR_DEPTH) <= 0) { | |
ce026cb9 | 348 | spin_unlock_bh(&jrp->inplock); |
8e8ec596 KP |
349 | dma_unmap_single(dev, desc_dma, desc_size, DMA_TO_DEVICE); |
350 | return -EBUSY; | |
351 | } | |
352 | ||
353 | head_entry = &jrp->entinfo[head]; | |
354 | head_entry->desc_addr_virt = desc; | |
355 | head_entry->desc_size = desc_size; | |
356 | head_entry->callbk = (void *)cbk; | |
357 | head_entry->cbkarg = areq; | |
358 | head_entry->desc_addr_dma = desc_dma; | |
359 | ||
261ea058 | 360 | jrp->inpring[jrp->inp_ring_write_index] = cpu_to_caam_dma(desc_dma); |
8e8ec596 | 361 | |
e7472422 VM |
362 | /* |
363 | * Guarantee that the descriptor's DMA address has been written to | |
364 | * the next slot in the ring before the write index is updated, since | |
365 | * other cores may update this index independently. | |
366 | */ | |
8e8ec596 KP |
367 | smp_wmb(); |
368 | ||
369 | jrp->inp_ring_write_index = (jrp->inp_ring_write_index + 1) & | |
370 | (JOBR_DEPTH - 1); | |
371 | jrp->head = (head + 1) & (JOBR_DEPTH - 1); | |
372 | ||
e7472422 VM |
373 | /* |
374 | * Ensure that all job information has been written before | |
375 | * notifying CAAM that a new job was added to the input ring. | |
376 | */ | |
377 | wmb(); | |
378 | ||
8e8ec596 KP |
379 | wr_reg32(&jrp->rregs->inpring_jobadd, 1); |
380 | ||
ce026cb9 | 381 | spin_unlock_bh(&jrp->inplock); |
8e8ec596 KP |
382 | |
383 | return 0; | |
384 | } | |
385 | EXPORT_SYMBOL(caam_jr_enqueue); | |
386 | ||
8e8ec596 KP |
387 | /* |
388 | * Init JobR independent of platform property detection | |
389 | */ | |
390 | static int caam_jr_init(struct device *dev) | |
391 | { | |
392 | struct caam_drv_private_jr *jrp; | |
393 | dma_addr_t inpbusaddr, outbusaddr; | |
394 | int i, error; | |
395 | ||
396 | jrp = dev_get_drvdata(dev); | |
397 | ||
2b163b5b HG |
398 | tasklet_init(&jrp->irqtask, caam_jr_dequeue, (unsigned long)dev); |
399 | ||
a0ca6ca0 | 400 | /* Connect job ring interrupt handler. */ |
2b163b5b HG |
401 | error = request_irq(jrp->irq, caam_jr_interrupt, IRQF_SHARED, |
402 | dev_name(dev), dev); | |
9620fd95 KP |
403 | if (error) { |
404 | dev_err(dev, "can't connect JobR %d interrupt (%d)\n", | |
405 | jrp->ridx, jrp->irq); | |
cbceeefd | 406 | goto out_kill_deq; |
9620fd95 KP |
407 | } |
408 | ||
8e8ec596 KP |
409 | error = caam_reset_hw_jr(dev); |
410 | if (error) | |
cbceeefd | 411 | goto out_free_irq; |
8e8ec596 | 412 | |
cbceeefd | 413 | error = -ENOMEM; |
9c4f9733 FE |
414 | jrp->inpring = dma_alloc_coherent(dev, sizeof(*jrp->inpring) * |
415 | JOBR_DEPTH, &inpbusaddr, GFP_KERNEL); | |
cbceeefd CS |
416 | if (!jrp->inpring) |
417 | goto out_free_irq; | |
1af8ea86 | 418 | |
9c4f9733 | 419 | jrp->outring = dma_alloc_coherent(dev, sizeof(*jrp->outring) * |
1af8ea86 | 420 | JOBR_DEPTH, &outbusaddr, GFP_KERNEL); |
cbceeefd CS |
421 | if (!jrp->outring) |
422 | goto out_free_inpring; | |
8e8ec596 | 423 | |
9c4f9733 | 424 | jrp->entinfo = kcalloc(JOBR_DEPTH, sizeof(*jrp->entinfo), GFP_KERNEL); |
cbceeefd CS |
425 | if (!jrp->entinfo) |
426 | goto out_free_outring; | |
8e8ec596 KP |
427 | |
428 | for (i = 0; i < JOBR_DEPTH; i++) | |
429 | jrp->entinfo[i].desc_addr_dma = !0; | |
430 | ||
431 | /* Setup rings */ | |
8e8ec596 KP |
432 | jrp->inp_ring_write_index = 0; |
433 | jrp->out_ring_read_index = 0; | |
434 | jrp->head = 0; | |
435 | jrp->tail = 0; | |
436 | ||
437 | wr_reg64(&jrp->rregs->inpring_base, inpbusaddr); | |
438 | wr_reg64(&jrp->rregs->outring_base, outbusaddr); | |
439 | wr_reg32(&jrp->rregs->inpring_size, JOBR_DEPTH); | |
440 | wr_reg32(&jrp->rregs->outring_size, JOBR_DEPTH); | |
441 | ||
442 | jrp->ringsize = JOBR_DEPTH; | |
443 | ||
444 | spin_lock_init(&jrp->inplock); | |
445 | spin_lock_init(&jrp->outlock); | |
446 | ||
447 | /* Select interrupt coalescing parameters */ | |
261ea058 HG |
448 | clrsetbits_32(&jrp->rregs->rconfig_lo, 0, JOBR_INTC | |
449 | (JOBR_INTC_COUNT_THLD << JRCFG_ICDCT_SHIFT) | | |
450 | (JOBR_INTC_TIME_THLD << JRCFG_ICTT_SHIFT)); | |
8e8ec596 | 451 | |
8e8ec596 | 452 | return 0; |
cbceeefd CS |
453 | |
454 | out_free_outring: | |
455 | dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH, | |
456 | jrp->outring, outbusaddr); | |
457 | out_free_inpring: | |
458 | dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH, | |
459 | jrp->inpring, inpbusaddr); | |
460 | dev_err(dev, "can't allocate job rings for %d\n", jrp->ridx); | |
461 | out_free_irq: | |
462 | free_irq(jrp->irq, dev); | |
463 | out_kill_deq: | |
2b163b5b | 464 | tasklet_kill(&jrp->irqtask); |
cbceeefd | 465 | return error; |
8e8ec596 KP |
466 | } |
467 | ||
8e8ec596 KP |
468 | |
469 | /* | |
313ea293 | 470 | * Probe routine for each detected JobR subsystem. |
8e8ec596 | 471 | */ |
313ea293 | 472 | static int caam_jr_probe(struct platform_device *pdev) |
8e8ec596 | 473 | { |
313ea293 RG |
474 | struct device *jrdev; |
475 | struct device_node *nprop; | |
476 | struct caam_job_ring __iomem *ctrl; | |
8e8ec596 | 477 | struct caam_drv_private_jr *jrpriv; |
313ea293 | 478 | static int total_jobrs; |
8e8ec596 KP |
479 | int error; |
480 | ||
313ea293 | 481 | jrdev = &pdev->dev; |
9c4f9733 | 482 | jrpriv = devm_kmalloc(jrdev, sizeof(*jrpriv), GFP_KERNEL); |
313ea293 | 483 | if (!jrpriv) |
8e8ec596 | 484 | return -ENOMEM; |
8e8ec596 | 485 | |
313ea293 | 486 | dev_set_drvdata(jrdev, jrpriv); |
8e8ec596 | 487 | |
313ea293 RG |
488 | /* save ring identity relative to detection */ |
489 | jrpriv->ridx = total_jobrs++; | |
490 | ||
491 | nprop = pdev->dev.of_node; | |
492 | /* Get configuration properties from device tree */ | |
493 | /* First, get register page */ | |
494 | ctrl = of_iomap(nprop, 0); | |
495 | if (!ctrl) { | |
496 | dev_err(jrdev, "of_iomap() failed\n"); | |
497 | return -ENOMEM; | |
8e8ec596 | 498 | } |
3862de1f | 499 | |
8439e94f | 500 | jrpriv->rregs = (struct caam_job_ring __iomem __force *)ctrl; |
8e8ec596 | 501 | |
b3b5fce7 | 502 | if (sizeof(dma_addr_t) == sizeof(u64)) { |
297b9ceb HG |
503 | if (caam_dpaa2) |
504 | error = dma_set_mask_and_coherent(jrdev, | |
505 | DMA_BIT_MASK(49)); | |
506 | else if (of_device_is_compatible(nprop, | |
507 | "fsl,sec-v5.0-job-ring")) | |
b3b5fce7 HG |
508 | error = dma_set_mask_and_coherent(jrdev, |
509 | DMA_BIT_MASK(40)); | |
e13af18a | 510 | else |
b3b5fce7 HG |
511 | error = dma_set_mask_and_coherent(jrdev, |
512 | DMA_BIT_MASK(36)); | |
513 | } else { | |
514 | error = dma_set_mask_and_coherent(jrdev, DMA_BIT_MASK(32)); | |
515 | } | |
516 | if (error) { | |
517 | dev_err(jrdev, "dma_set_mask_and_coherent failed (%d)\n", | |
518 | error); | |
519 | iounmap(ctrl); | |
520 | return error; | |
521 | } | |
e13af18a | 522 | |
8e8ec596 | 523 | /* Identify the interrupt */ |
26b265cd | 524 | jrpriv->irq = irq_of_parse_and_map(nprop, 0); |
8e8ec596 KP |
525 | |
526 | /* Now do the platform independent part */ | |
527 | error = caam_jr_init(jrdev); /* now turn on hardware */ | |
c6bf62e4 CS |
528 | if (error) { |
529 | irq_dispose_mapping(jrpriv->irq); | |
33878795 | 530 | iounmap(ctrl); |
8e8ec596 | 531 | return error; |
c6bf62e4 | 532 | } |
8e8ec596 | 533 | |
313ea293 RG |
534 | jrpriv->dev = jrdev; |
535 | spin_lock(&driver_data.jr_alloc_lock); | |
536 | list_add_tail(&jrpriv->list_node, &driver_data.jr_list); | |
537 | spin_unlock(&driver_data.jr_alloc_lock); | |
538 | ||
07defbfb RG |
539 | atomic_set(&jrpriv->tfm_count, 0); |
540 | ||
313ea293 RG |
541 | return 0; |
542 | } | |
543 | ||
52a33d99 | 544 | static const struct of_device_id caam_jr_match[] = { |
313ea293 RG |
545 | { |
546 | .compatible = "fsl,sec-v4.0-job-ring", | |
547 | }, | |
548 | { | |
549 | .compatible = "fsl,sec4.0-job-ring", | |
550 | }, | |
551 | {}, | |
552 | }; | |
553 | MODULE_DEVICE_TABLE(of, caam_jr_match); | |
554 | ||
555 | static struct platform_driver caam_jr_driver = { | |
556 | .driver = { | |
557 | .name = "caam_jr", | |
313ea293 RG |
558 | .of_match_table = caam_jr_match, |
559 | }, | |
560 | .probe = caam_jr_probe, | |
561 | .remove = caam_jr_remove, | |
562 | }; | |
563 | ||
564 | static int __init jr_driver_init(void) | |
565 | { | |
566 | spin_lock_init(&driver_data.jr_alloc_lock); | |
567 | INIT_LIST_HEAD(&driver_data.jr_list); | |
568 | return platform_driver_register(&caam_jr_driver); | |
8e8ec596 | 569 | } |
313ea293 RG |
570 | |
571 | static void __exit jr_driver_exit(void) | |
572 | { | |
573 | platform_driver_unregister(&caam_jr_driver); | |
8e8ec596 | 574 | } |
313ea293 RG |
575 | |
576 | module_init(jr_driver_init); | |
577 | module_exit(jr_driver_exit); | |
578 | ||
579 | MODULE_LICENSE("GPL"); | |
580 | MODULE_DESCRIPTION("FSL CAAM JR request backend"); | |
581 | MODULE_AUTHOR("Freescale Semiconductor - NMG/STC"); |