2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (C) 2008-2009 Semihalf, Piotr Ziecik
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
19 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
23 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
24 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * Freescale integrated Security Engine (SEC) driver. Currently SEC 2.0 and
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
37 #include <sys/systm.h>
39 #include <sys/endian.h>
40 #include <sys/kernel.h>
42 #include <sys/malloc.h>
44 #include <sys/module.h>
45 #include <sys/mutex.h>
46 #include <sys/random.h>
49 #include <machine/_inttypes.h>
50 #include <machine/bus.h>
51 #include <machine/resource.h>
53 #include <opencrypto/cryptodev.h>
54 #include <opencrypto/xform_auth.h>
55 #include "cryptodev_if.h"
57 #include <dev/ofw/ofw_bus_subr.h>
58 #include <dev/sec/sec.h>
60 static int sec_probe(device_t dev);
61 static int sec_attach(device_t dev);
62 static int sec_detach(device_t dev);
63 static int sec_suspend(device_t dev);
64 static int sec_resume(device_t dev);
65 static int sec_shutdown(device_t dev);
66 static void sec_primary_intr(void *arg);
67 static void sec_secondary_intr(void *arg);
68 static int sec_setup_intr(struct sec_softc *sc, struct resource **ires,
69 void **ihand, int *irid, driver_intr_t handler, const char *iname);
70 static void sec_release_intr(struct sec_softc *sc, struct resource *ires,
71 void *ihand, int irid, const char *iname);
72 static int sec_controller_reset(struct sec_softc *sc);
73 static int sec_channel_reset(struct sec_softc *sc, int channel, int full);
74 static int sec_init(struct sec_softc *sc);
75 static int sec_alloc_dma_mem(struct sec_softc *sc,
76 struct sec_dma_mem *dma_mem, bus_size_t size);
77 static int sec_desc_map_dma(struct sec_softc *sc,
78 struct sec_dma_mem *dma_mem, struct cryptop *crp, bus_size_t size,
79 struct sec_desc_map_info *sdmi);
80 static void sec_free_dma_mem(struct sec_dma_mem *dma_mem);
81 static void sec_enqueue(struct sec_softc *sc);
82 static int sec_enqueue_desc(struct sec_softc *sc, struct sec_desc *desc,
84 static int sec_eu_channel(struct sec_softc *sc, int eu);
85 static int sec_make_pointer(struct sec_softc *sc, struct sec_desc *desc,
86 u_int n, struct cryptop *crp, bus_size_t doffset, bus_size_t dsize);
87 static int sec_make_pointer_direct(struct sec_softc *sc,
88 struct sec_desc *desc, u_int n, bus_addr_t data, bus_size_t dsize);
89 static int sec_probesession(device_t dev,
90 const struct crypto_session_params *csp);
91 static int sec_newsession(device_t dev, crypto_session_t cses,
92 const struct crypto_session_params *csp);
93 static int sec_process(device_t dev, struct cryptop *crp, int hint);
94 static int sec_build_common_ns_desc(struct sec_softc *sc,
95 struct sec_desc *desc, const struct crypto_session_params *csp,
97 static int sec_build_common_s_desc(struct sec_softc *sc,
98 struct sec_desc *desc, const struct crypto_session_params *csp,
101 static struct sec_desc *sec_find_desc(struct sec_softc *sc, bus_addr_t paddr);
104 static bool sec_aesu_newsession(const struct crypto_session_params *csp);
105 static int sec_aesu_make_desc(struct sec_softc *sc,
106 const struct crypto_session_params *csp, struct sec_desc *desc,
107 struct cryptop *crp);
110 static bool sec_mdeu_can_handle(u_int alg);
111 static int sec_mdeu_config(const struct crypto_session_params *csp,
112 u_int *eu, u_int *mode, u_int *hashlen);
113 static bool sec_mdeu_newsession(const struct crypto_session_params *csp);
114 static int sec_mdeu_make_desc(struct sec_softc *sc,
115 const struct crypto_session_params *csp, struct sec_desc *desc,
116 struct cryptop *crp);
118 static device_method_t sec_methods[] = {
119 /* Device interface */
120 DEVMETHOD(device_probe, sec_probe),
121 DEVMETHOD(device_attach, sec_attach),
122 DEVMETHOD(device_detach, sec_detach),
124 DEVMETHOD(device_suspend, sec_suspend),
125 DEVMETHOD(device_resume, sec_resume),
126 DEVMETHOD(device_shutdown, sec_shutdown),
129 DEVMETHOD(cryptodev_probesession, sec_probesession),
130 DEVMETHOD(cryptodev_newsession, sec_newsession),
131 DEVMETHOD(cryptodev_process, sec_process),
135 static driver_t sec_driver = {
138 sizeof(struct sec_softc),
141 static devclass_t sec_devclass;
142 DRIVER_MODULE(sec, simplebus, sec_driver, sec_devclass, 0, 0);
143 MODULE_DEPEND(sec, crypto, 1, 1, 1);
145 static struct sec_eu_methods sec_eus[] = {
158 sec_sync_dma_mem(struct sec_dma_mem *dma_mem, bus_dmasync_op_t op)
161 /* Sync only if dma memory is valid */
162 if (dma_mem->dma_vaddr != NULL)
163 bus_dmamap_sync(dma_mem->dma_tag, dma_mem->dma_map, op);
167 sec_get_pointer_data(struct sec_desc *desc, u_int n)
170 return (desc->sd_ptr_dmem[n].dma_vaddr);
174 sec_probe(device_t dev)
176 struct sec_softc *sc;
179 if (!ofw_bus_status_okay(dev))
182 if (!ofw_bus_is_compatible(dev, "fsl,sec2.0"))
185 sc = device_get_softc(dev);
188 sc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rrid,
191 if (sc->sc_rres == NULL)
194 sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres);
195 sc->sc_bas.bst = rman_get_bustag(sc->sc_rres);
197 id = SEC_READ(sc, SEC_ID);
199 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid, sc->sc_rres);
203 device_set_desc(dev, "Freescale Security Engine 2.0");
207 device_set_desc(dev, "Freescale Security Engine 3.0");
211 device_set_desc(dev, "Freescale Security Engine 3.1");
215 device_printf(dev, "unknown SEC ID 0x%016"PRIx64"!\n", id);
223 sec_attach(device_t dev)
225 struct sec_softc *sc;
226 struct sec_hw_lt *lt;
230 sc = device_get_softc(dev);
235 sc->sc_cid = crypto_get_driverid(dev, sizeof(struct sec_session),
236 CRYPTOCAP_F_HARDWARE);
237 if (sc->sc_cid < 0) {
238 device_printf(dev, "could not get crypto driver ID!\n");
243 mtx_init(&sc->sc_controller_lock, device_get_nameunit(dev),
244 "SEC Controller lock", MTX_DEF);
245 mtx_init(&sc->sc_descriptors_lock, device_get_nameunit(dev),
246 "SEC Descriptors lock", MTX_DEF);
248 /* Allocate I/O memory for SEC registers */
250 sc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rrid,
253 if (sc->sc_rres == NULL) {
254 device_printf(dev, "could not allocate I/O memory!\n");
258 sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres);
259 sc->sc_bas.bst = rman_get_bustag(sc->sc_rres);
261 /* Setup interrupts */
263 error = sec_setup_intr(sc, &sc->sc_pri_ires, &sc->sc_pri_ihand,
264 &sc->sc_pri_irid, sec_primary_intr, "primary");
269 if (sc->sc_version == 3) {
271 error = sec_setup_intr(sc, &sc->sc_sec_ires, &sc->sc_sec_ihand,
272 &sc->sc_sec_irid, sec_secondary_intr, "secondary");
278 /* Alloc DMA memory for descriptors and link tables */
279 error = sec_alloc_dma_mem(sc, &(sc->sc_desc_dmem),
280 SEC_DESCRIPTORS * sizeof(struct sec_hw_desc));
285 error = sec_alloc_dma_mem(sc, &(sc->sc_lt_dmem),
286 (SEC_LT_ENTRIES + 1) * sizeof(struct sec_hw_lt));
291 /* Fill in descriptors and link tables */
292 for (i = 0; i < SEC_DESCRIPTORS; i++) {
293 sc->sc_desc[i].sd_desc =
294 (struct sec_hw_desc*)(sc->sc_desc_dmem.dma_vaddr) + i;
295 sc->sc_desc[i].sd_desc_paddr = sc->sc_desc_dmem.dma_paddr +
296 (i * sizeof(struct sec_hw_desc));
299 for (i = 0; i < SEC_LT_ENTRIES + 1; i++) {
301 (struct sec_hw_lt*)(sc->sc_lt_dmem.dma_vaddr) + i;
302 sc->sc_lt[i].sl_lt_paddr = sc->sc_lt_dmem.dma_paddr +
303 (i * sizeof(struct sec_hw_lt));
306 /* Last entry in link table is used to create a circle */
307 lt = sc->sc_lt[SEC_LT_ENTRIES].sl_lt;
311 lt->shl_ptr = sc->sc_lt[0].sl_lt_paddr;
313 /* Init descriptor and link table queues pointers */
314 SEC_CNT_INIT(sc, sc_free_desc_get_cnt, SEC_DESCRIPTORS);
315 SEC_CNT_INIT(sc, sc_free_desc_put_cnt, SEC_DESCRIPTORS);
316 SEC_CNT_INIT(sc, sc_ready_desc_get_cnt, SEC_DESCRIPTORS);
317 SEC_CNT_INIT(sc, sc_ready_desc_put_cnt, SEC_DESCRIPTORS);
318 SEC_CNT_INIT(sc, sc_queued_desc_get_cnt, SEC_DESCRIPTORS);
319 SEC_CNT_INIT(sc, sc_queued_desc_put_cnt, SEC_DESCRIPTORS);
320 SEC_CNT_INIT(sc, sc_lt_alloc_cnt, SEC_LT_ENTRIES);
321 SEC_CNT_INIT(sc, sc_lt_free_cnt, SEC_LT_ENTRIES);
323 /* Create masks for fast checks */
324 sc->sc_int_error_mask = 0;
325 for (i = 0; i < SEC_CHANNELS; i++)
326 sc->sc_int_error_mask |= (~0ULL & SEC_INT_CH_ERR(i));
328 switch (sc->sc_version) {
330 sc->sc_channel_idle_mask =
331 (SEC_CHAN_CSR2_FFLVL_M << SEC_CHAN_CSR2_FFLVL_S) |
332 (SEC_CHAN_CSR2_MSTATE_M << SEC_CHAN_CSR2_MSTATE_S) |
333 (SEC_CHAN_CSR2_PSTATE_M << SEC_CHAN_CSR2_PSTATE_S) |
334 (SEC_CHAN_CSR2_GSTATE_M << SEC_CHAN_CSR2_GSTATE_S);
337 sc->sc_channel_idle_mask =
338 (SEC_CHAN_CSR3_FFLVL_M << SEC_CHAN_CSR3_FFLVL_S) |
339 (SEC_CHAN_CSR3_MSTATE_M << SEC_CHAN_CSR3_MSTATE_S) |
340 (SEC_CHAN_CSR3_PSTATE_M << SEC_CHAN_CSR3_PSTATE_S) |
341 (SEC_CHAN_CSR3_GSTATE_M << SEC_CHAN_CSR3_GSTATE_S);
346 error = sec_init(sc);
354 sec_free_dma_mem(&(sc->sc_lt_dmem));
356 sec_free_dma_mem(&(sc->sc_desc_dmem));
358 sec_release_intr(sc, sc->sc_sec_ires, sc->sc_sec_ihand,
359 sc->sc_sec_irid, "secondary");
361 sec_release_intr(sc, sc->sc_pri_ires, sc->sc_pri_ihand,
362 sc->sc_pri_irid, "primary");
364 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid, sc->sc_rres);
366 mtx_destroy(&sc->sc_controller_lock);
367 mtx_destroy(&sc->sc_descriptors_lock);
373 sec_detach(device_t dev)
375 struct sec_softc *sc = device_get_softc(dev);
376 int i, error, timeout = SEC_TIMEOUT;
378 /* Prepare driver to shutdown */
379 SEC_LOCK(sc, descriptors);
381 SEC_UNLOCK(sc, descriptors);
383 /* Wait until all queued processing finishes */
385 SEC_LOCK(sc, descriptors);
386 i = SEC_READY_DESC_CNT(sc) + SEC_QUEUED_DESC_CNT(sc);
387 SEC_UNLOCK(sc, descriptors);
393 device_printf(dev, "queue flush timeout!\n");
395 /* DMA can be still active - stop it */
396 for (i = 0; i < SEC_CHANNELS; i++)
397 sec_channel_reset(sc, i, 1);
406 /* Disable interrupts */
407 SEC_WRITE(sc, SEC_IER, 0);
409 /* Unregister from OCF */
410 crypto_unregister_all(sc->sc_cid);
412 /* Free DMA memory */
413 for (i = 0; i < SEC_DESCRIPTORS; i++)
414 SEC_DESC_FREE_POINTERS(&(sc->sc_desc[i]));
416 sec_free_dma_mem(&(sc->sc_lt_dmem));
417 sec_free_dma_mem(&(sc->sc_desc_dmem));
419 /* Release interrupts */
420 sec_release_intr(sc, sc->sc_pri_ires, sc->sc_pri_ihand,
421 sc->sc_pri_irid, "primary");
422 sec_release_intr(sc, sc->sc_sec_ires, sc->sc_sec_ihand,
423 sc->sc_sec_irid, "secondary");
427 error = bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid,
430 device_printf(dev, "bus_release_resource() failed for"
431 " I/O memory, error %d\n", error);
436 mtx_destroy(&sc->sc_controller_lock);
437 mtx_destroy(&sc->sc_descriptors_lock);
443 sec_suspend(device_t dev)
450 sec_resume(device_t dev)
457 sec_shutdown(device_t dev)
464 sec_setup_intr(struct sec_softc *sc, struct resource **ires, void **ihand,
465 int *irid, driver_intr_t handler, const char *iname)
469 (*ires) = bus_alloc_resource_any(sc->sc_dev, SYS_RES_IRQ, irid,
472 if ((*ires) == NULL) {
473 device_printf(sc->sc_dev, "could not allocate %s IRQ\n", iname);
477 error = bus_setup_intr(sc->sc_dev, *ires, INTR_MPSAFE | INTR_TYPE_NET,
478 NULL, handler, sc, ihand);
481 device_printf(sc->sc_dev, "failed to set up %s IRQ\n", iname);
482 if (bus_release_resource(sc->sc_dev, SYS_RES_IRQ, *irid, *ires))
483 device_printf(sc->sc_dev, "could not release %s IRQ\n",
494 sec_release_intr(struct sec_softc *sc, struct resource *ires, void *ihand,
495 int irid, const char *iname)
502 error = bus_teardown_intr(sc->sc_dev, ires, ihand);
504 device_printf(sc->sc_dev, "bus_teardown_intr() failed for %s"
505 " IRQ, error %d\n", iname, error);
507 error = bus_release_resource(sc->sc_dev, SYS_RES_IRQ, irid, ires);
509 device_printf(sc->sc_dev, "bus_release_resource() failed for %s"
510 " IRQ, error %d\n", iname, error);
514 sec_primary_intr(void *arg)
516 struct sec_session *ses;
517 struct sec_softc *sc = arg;
518 struct sec_desc *desc;
521 uint8_t hash[HASH_MAX_LEN];
524 SEC_LOCK(sc, controller);
526 /* Check for errors */
527 isr = SEC_READ(sc, SEC_ISR);
528 if (isr & sc->sc_int_error_mask) {
529 /* Check each channel for error */
530 for (i = 0; i < SEC_CHANNELS; i++) {
531 if ((isr & SEC_INT_CH_ERR(i)) == 0)
534 device_printf(sc->sc_dev,
535 "I/O error on channel %i!\n", i);
537 /* Find and mark problematic descriptor */
538 desc = sec_find_desc(sc, SEC_READ(sc,
542 desc->sd_error = EIO;
544 /* Do partial channel reset */
545 sec_channel_reset(sc, i, 0);
550 SEC_WRITE(sc, SEC_ICR, 0xFFFFFFFFFFFFFFFFULL);
552 SEC_UNLOCK(sc, controller);
553 SEC_LOCK(sc, descriptors);
555 /* Handle processed descriptors */
556 SEC_DESC_SYNC(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
558 while (SEC_QUEUED_DESC_CNT(sc) > 0) {
559 desc = SEC_GET_QUEUED_DESC(sc);
561 if (desc->sd_desc->shd_done != 0xFF && desc->sd_error == 0) {
562 SEC_PUT_BACK_QUEUED_DESC(sc);
566 SEC_DESC_SYNC_POINTERS(desc, BUS_DMASYNC_PREREAD |
567 BUS_DMASYNC_PREWRITE);
570 crp->crp_etype = desc->sd_error;
571 if (crp->crp_etype == 0) {
572 ses = crypto_get_driver_session(crp->crp_session);
573 if (ses->ss_mlen != 0) {
574 if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) {
576 crp->crp_digest_start,
579 desc->sd_desc->shd_digest,
580 hash, ses->ss_mlen) != 0)
581 crp->crp_etype = EBADMSG;
584 crp->crp_digest_start,
586 desc->sd_desc->shd_digest);
589 crypto_done(desc->sd_crp);
591 SEC_DESC_FREE_POINTERS(desc);
592 SEC_DESC_FREE_LT(sc, desc);
593 SEC_DESC_QUEUED2FREE(sc);
596 SEC_DESC_SYNC(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
598 if (!sc->sc_shutdown) {
599 wakeup = sc->sc_blocked;
603 SEC_UNLOCK(sc, descriptors);
605 /* Enqueue ready descriptors in hardware */
609 crypto_unblock(sc->sc_cid, wakeup);
613 sec_secondary_intr(void *arg)
615 struct sec_softc *sc = arg;
617 device_printf(sc->sc_dev, "spurious secondary interrupt!\n");
618 sec_primary_intr(arg);
622 sec_controller_reset(struct sec_softc *sc)
624 int timeout = SEC_TIMEOUT;
626 /* Reset Controller */
627 SEC_WRITE(sc, SEC_MCR, SEC_MCR_SWR);
629 while (SEC_READ(sc, SEC_MCR) & SEC_MCR_SWR) {
634 device_printf(sc->sc_dev, "timeout while waiting for "
644 sec_channel_reset(struct sec_softc *sc, int channel, int full)
646 int timeout = SEC_TIMEOUT;
647 uint64_t bit = (full) ? SEC_CHAN_CCR_R : SEC_CHAN_CCR_CON;
651 reg = SEC_READ(sc, SEC_CHAN_CCR(channel));
652 SEC_WRITE(sc, SEC_CHAN_CCR(channel), reg | bit);
654 while (SEC_READ(sc, SEC_CHAN_CCR(channel)) & bit) {
659 device_printf(sc->sc_dev, "timeout while waiting for "
666 reg = SEC_CHAN_CCR_CDIE | SEC_CHAN_CCR_NT | SEC_CHAN_CCR_BS;
668 switch(sc->sc_version) {
670 reg |= SEC_CHAN_CCR_CDWE;
673 reg |= SEC_CHAN_CCR_AWSE | SEC_CHAN_CCR_WGN;
677 SEC_WRITE(sc, SEC_CHAN_CCR(channel), reg);
684 sec_init(struct sec_softc *sc)
689 /* Reset controller twice to clear all pending interrupts */
690 error = sec_controller_reset(sc);
694 error = sec_controller_reset(sc);
699 for (i = 0; i < SEC_CHANNELS; i++) {
700 error = sec_channel_reset(sc, i, 1);
705 /* Enable Interrupts */
707 for (i = 0; i < SEC_CHANNELS; i++)
708 reg |= SEC_INT_CH_DN(i) | SEC_INT_CH_ERR(i);
710 SEC_WRITE(sc, SEC_IER, reg);
716 sec_alloc_dma_mem_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
718 struct sec_dma_mem *dma_mem = arg;
723 KASSERT(nseg == 1, ("Wrong number of segments, should be 1"));
724 dma_mem->dma_paddr = segs->ds_addr;
728 sec_dma_map_desc_cb(void *arg, bus_dma_segment_t *segs, int nseg,
731 struct sec_desc_map_info *sdmi = arg;
732 struct sec_softc *sc = sdmi->sdmi_sc;
733 struct sec_lt *lt = NULL;
738 SEC_LOCK_ASSERT(sc, descriptors);
743 for (i = 0; i < nseg; i++) {
744 addr = segs[i].ds_addr;
745 size = segs[i].ds_len;
747 /* Skip requested offset */
748 if (sdmi->sdmi_offset >= size) {
749 sdmi->sdmi_offset -= size;
753 addr += sdmi->sdmi_offset;
754 size -= sdmi->sdmi_offset;
755 sdmi->sdmi_offset = 0;
757 /* Do not link more than requested */
758 if (sdmi->sdmi_size < size)
759 size = sdmi->sdmi_size;
761 lt = SEC_ALLOC_LT_ENTRY(sc);
762 lt->sl_lt->shl_length = size;
763 lt->sl_lt->shl_r = 0;
764 lt->sl_lt->shl_n = 0;
765 lt->sl_lt->shl_ptr = addr;
767 if (sdmi->sdmi_lt_first == NULL)
768 sdmi->sdmi_lt_first = lt;
770 sdmi->sdmi_lt_used += 1;
772 if ((sdmi->sdmi_size -= size) == 0)
776 sdmi->sdmi_lt_last = lt;
780 sec_alloc_dma_mem(struct sec_softc *sc, struct sec_dma_mem *dma_mem,
785 if (dma_mem->dma_vaddr != NULL)
788 error = bus_dma_tag_create(NULL, /* parent */
789 SEC_DMA_ALIGNMENT, 0, /* alignment, boundary */
790 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
791 BUS_SPACE_MAXADDR, /* highaddr */
792 NULL, NULL, /* filtfunc, filtfuncarg */
793 size, 1, /* maxsize, nsegments */
794 size, 0, /* maxsegsz, flags */
795 NULL, NULL, /* lockfunc, lockfuncarg */
796 &(dma_mem->dma_tag)); /* dmat */
799 device_printf(sc->sc_dev, "failed to allocate busdma tag, error"
804 error = bus_dmamem_alloc(dma_mem->dma_tag, &(dma_mem->dma_vaddr),
805 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &(dma_mem->dma_map));
808 device_printf(sc->sc_dev, "failed to allocate DMA safe"
809 " memory, error %i!\n", error);
813 error = bus_dmamap_load(dma_mem->dma_tag, dma_mem->dma_map,
814 dma_mem->dma_vaddr, size, sec_alloc_dma_mem_cb, dma_mem,
818 device_printf(sc->sc_dev, "cannot get address of the DMA"
819 " memory, error %i\n", error);
823 dma_mem->dma_is_map = 0;
827 bus_dmamem_free(dma_mem->dma_tag, dma_mem->dma_vaddr, dma_mem->dma_map);
829 bus_dma_tag_destroy(dma_mem->dma_tag);
831 dma_mem->dma_vaddr = NULL;
836 sec_desc_map_dma(struct sec_softc *sc, struct sec_dma_mem *dma_mem,
837 struct cryptop *crp, bus_size_t size, struct sec_desc_map_info *sdmi)
841 if (dma_mem->dma_vaddr != NULL)
844 switch (crp->crp_buf.cb_type) {
845 case CRYPTO_BUF_CONTIG:
848 size = SEC_FREE_LT_CNT(sc) * SEC_MAX_DMA_BLOCK_SIZE;
850 case CRYPTO_BUF_MBUF:
851 size = m_length(crp->crp_buf.cb_mbuf, NULL);
853 case CRYPTO_BUF_VMPAGE:
854 size = PAGE_SIZE - crp->crp_buf.cb_vm_page_offset;
860 error = bus_dma_tag_create(NULL, /* parent */
861 SEC_DMA_ALIGNMENT, 0, /* alignment, boundary */
862 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
863 BUS_SPACE_MAXADDR, /* highaddr */
864 NULL, NULL, /* filtfunc, filtfuncarg */
866 SEC_FREE_LT_CNT(sc), /* nsegments */
867 SEC_MAX_DMA_BLOCK_SIZE, 0, /* maxsegsz, flags */
868 NULL, NULL, /* lockfunc, lockfuncarg */
869 &(dma_mem->dma_tag)); /* dmat */
872 device_printf(sc->sc_dev, "failed to allocate busdma tag, error"
874 dma_mem->dma_vaddr = NULL;
878 error = bus_dmamap_create(dma_mem->dma_tag, 0, &(dma_mem->dma_map));
881 device_printf(sc->sc_dev, "failed to create DMA map, error %i!"
883 bus_dma_tag_destroy(dma_mem->dma_tag);
887 error = bus_dmamap_load_crp(dma_mem->dma_tag, dma_mem->dma_map, crp,
888 sec_dma_map_desc_cb, sdmi, BUS_DMA_NOWAIT);
891 device_printf(sc->sc_dev, "cannot get address of the DMA"
892 " memory, error %i!\n", error);
893 bus_dmamap_destroy(dma_mem->dma_tag, dma_mem->dma_map);
894 bus_dma_tag_destroy(dma_mem->dma_tag);
898 dma_mem->dma_is_map = 1;
899 dma_mem->dma_vaddr = crp;
905 sec_free_dma_mem(struct sec_dma_mem *dma_mem)
908 /* Check for double free */
909 if (dma_mem->dma_vaddr == NULL)
912 bus_dmamap_unload(dma_mem->dma_tag, dma_mem->dma_map);
914 if (dma_mem->dma_is_map)
915 bus_dmamap_destroy(dma_mem->dma_tag, dma_mem->dma_map);
917 bus_dmamem_free(dma_mem->dma_tag, dma_mem->dma_vaddr,
920 bus_dma_tag_destroy(dma_mem->dma_tag);
921 dma_mem->dma_vaddr = NULL;
925 sec_eu_channel(struct sec_softc *sc, int eu)
930 SEC_LOCK_ASSERT(sc, controller);
932 reg = SEC_READ(sc, SEC_EUASR);
936 channel = SEC_EUASR_AFEU(reg);
939 channel = SEC_EUASR_DEU(reg);
943 channel = SEC_EUASR_MDEU(reg);
946 channel = SEC_EUASR_RNGU(reg);
949 channel = SEC_EUASR_PKEU(reg);
952 channel = SEC_EUASR_AESU(reg);
955 channel = SEC_EUASR_KEU(reg);
958 channel = SEC_EUASR_CRCU(reg);
962 return (channel - 1);
966 sec_enqueue_desc(struct sec_softc *sc, struct sec_desc *desc, int channel)
968 u_int fflvl = SEC_MAX_FIFO_LEVEL;
972 SEC_LOCK_ASSERT(sc, controller);
974 /* Find free channel if have not got one */
976 for (i = 0; i < SEC_CHANNELS; i++) {
977 reg = SEC_READ(sc, SEC_CHAN_CSR(channel));
979 if ((reg & sc->sc_channel_idle_mask) == 0) {
986 /* There is no free channel */
990 /* Check FIFO level on selected channel */
991 reg = SEC_READ(sc, SEC_CHAN_CSR(channel));
993 switch(sc->sc_version) {
995 fflvl = (reg >> SEC_CHAN_CSR2_FFLVL_S) & SEC_CHAN_CSR2_FFLVL_M;
998 fflvl = (reg >> SEC_CHAN_CSR3_FFLVL_S) & SEC_CHAN_CSR3_FFLVL_M;
1002 if (fflvl >= SEC_MAX_FIFO_LEVEL)
1005 /* Enqueue descriptor in channel */
1006 SEC_WRITE(sc, SEC_CHAN_FF(channel), desc->sd_desc_paddr);
1012 sec_enqueue(struct sec_softc *sc)
1014 struct sec_desc *desc;
1017 SEC_LOCK(sc, descriptors);
1018 SEC_LOCK(sc, controller);
1020 while (SEC_READY_DESC_CNT(sc) > 0) {
1021 desc = SEC_GET_READY_DESC(sc);
1023 ch0 = sec_eu_channel(sc, desc->sd_desc->shd_eu_sel0);
1024 ch1 = sec_eu_channel(sc, desc->sd_desc->shd_eu_sel1);
1027 * Both EU are used by the same channel.
1028 * Enqueue descriptor in channel used by busy EUs.
1030 if (ch0 >= 0 && ch0 == ch1) {
1031 if (sec_enqueue_desc(sc, desc, ch0) >= 0) {
1032 SEC_DESC_READY2QUEUED(sc);
1038 * Only one EU is free.
1039 * Enqueue descriptor in channel used by busy EU.
1041 if ((ch0 >= 0 && ch1 < 0) || (ch1 >= 0 && ch0 < 0)) {
1042 if (sec_enqueue_desc(sc, desc, (ch0 >= 0) ? ch0 : ch1)
1044 SEC_DESC_READY2QUEUED(sc);
1051 * Enqueue descriptor in first free channel.
1053 if (ch0 < 0 && ch1 < 0) {
1054 if (sec_enqueue_desc(sc, desc, -1) >= 0) {
1055 SEC_DESC_READY2QUEUED(sc);
1060 /* Current descriptor can not be queued at the moment */
1061 SEC_PUT_BACK_READY_DESC(sc);
1065 SEC_UNLOCK(sc, controller);
1066 SEC_UNLOCK(sc, descriptors);
1069 static struct sec_desc *
1070 sec_find_desc(struct sec_softc *sc, bus_addr_t paddr)
1072 struct sec_desc *desc = NULL;
1075 SEC_LOCK_ASSERT(sc, descriptors);
1077 for (i = 0; i < SEC_CHANNELS; i++) {
1078 if (sc->sc_desc[i].sd_desc_paddr == paddr) {
1079 desc = &(sc->sc_desc[i]);
1088 sec_make_pointer_direct(struct sec_softc *sc, struct sec_desc *desc, u_int n,
1089 bus_addr_t data, bus_size_t dsize)
1091 struct sec_hw_desc_ptr *ptr;
1093 SEC_LOCK_ASSERT(sc, descriptors);
1095 ptr = &(desc->sd_desc->shd_pointer[n]);
1096 ptr->shdp_length = dsize;
1097 ptr->shdp_extent = 0;
1099 ptr->shdp_ptr = data;
1105 sec_make_pointer(struct sec_softc *sc, struct sec_desc *desc,
1106 u_int n, struct cryptop *crp, bus_size_t doffset, bus_size_t dsize)
1108 struct sec_desc_map_info sdmi = { sc, dsize, doffset, NULL, NULL, 0 };
1109 struct sec_hw_desc_ptr *ptr;
1112 SEC_LOCK_ASSERT(sc, descriptors);
1114 error = sec_desc_map_dma(sc, &(desc->sd_ptr_dmem[n]), crp, dsize,
1120 sdmi.sdmi_lt_last->sl_lt->shl_r = 1;
1121 desc->sd_lt_used += sdmi.sdmi_lt_used;
1123 ptr = &(desc->sd_desc->shd_pointer[n]);
1124 ptr->shdp_length = dsize;
1125 ptr->shdp_extent = 0;
1127 ptr->shdp_ptr = sdmi.sdmi_lt_first->sl_lt_paddr;
1133 sec_cipher_supported(const struct crypto_session_params *csp)
1136 switch (csp->csp_cipher_alg) {
1137 case CRYPTO_AES_CBC:
1139 if (csp->csp_ivlen != AES_BLOCK_LEN)
1146 if (csp->csp_cipher_klen == 0 || csp->csp_cipher_klen > SEC_MAX_KEY_LEN)
1153 sec_auth_supported(struct sec_softc *sc,
1154 const struct crypto_session_params *csp)
1157 switch (csp->csp_auth_alg) {
1158 case CRYPTO_SHA2_384_HMAC:
1159 case CRYPTO_SHA2_512_HMAC:
1160 if (sc->sc_version < 3)
1163 case CRYPTO_SHA1_HMAC:
1164 case CRYPTO_SHA2_256_HMAC:
1165 if (csp->csp_auth_klen > SEC_MAX_KEY_LEN)
1177 sec_probesession(device_t dev, const struct crypto_session_params *csp)
1179 struct sec_softc *sc = device_get_softc(dev);
1181 if (csp->csp_flags != 0)
1183 switch (csp->csp_mode) {
1184 case CSP_MODE_DIGEST:
1185 if (!sec_auth_supported(sc, csp))
1188 case CSP_MODE_CIPHER:
1189 if (!sec_cipher_supported(csp))
1193 if (!sec_auth_supported(sc, csp) || !sec_cipher_supported(csp))
1199 return (CRYPTODEV_PROBE_HARDWARE);
1203 sec_newsession(device_t dev, crypto_session_t cses,
1204 const struct crypto_session_params *csp)
1206 struct sec_eu_methods *eu = sec_eus;
1207 struct sec_session *ses;
1209 ses = crypto_get_driver_session(cses);
1211 /* Find EU for this session */
1212 while (eu->sem_make_desc != NULL) {
1213 if (eu->sem_newsession(csp))
1217 KASSERT(eu->sem_make_desc != NULL, ("failed to find eu for session"));
1219 /* Save cipher key */
1220 if (csp->csp_cipher_key != NULL)
1221 memcpy(ses->ss_key, csp->csp_cipher_key, csp->csp_cipher_klen);
1223 /* Save digest key */
1224 if (csp->csp_auth_key != NULL)
1225 memcpy(ses->ss_mkey, csp->csp_auth_key, csp->csp_auth_klen);
1227 if (csp->csp_auth_alg != 0) {
1228 if (csp->csp_auth_mlen == 0)
1229 ses->ss_mlen = crypto_auth_hash(csp)->hashsize;
1231 ses->ss_mlen = csp->csp_auth_mlen;
1238 sec_process(device_t dev, struct cryptop *crp, int hint)
1240 struct sec_softc *sc = device_get_softc(dev);
1241 struct sec_desc *desc = NULL;
1242 const struct crypto_session_params *csp;
1243 struct sec_session *ses;
1246 ses = crypto_get_driver_session(crp->crp_session);
1247 csp = crypto_get_params(crp->crp_session);
1249 /* Check for input length */
1250 if (crypto_buffer_len(&crp->crp_buf) > SEC_MAX_DMA_BLOCK_SIZE) {
1251 crp->crp_etype = E2BIG;
1256 SEC_LOCK(sc, descriptors);
1257 SEC_DESC_SYNC(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1259 /* Block driver if there is no free descriptors or we are going down */
1260 if (SEC_FREE_DESC_CNT(sc) == 0 || sc->sc_shutdown) {
1261 sc->sc_blocked |= CRYPTO_SYMQ;
1262 SEC_UNLOCK(sc, descriptors);
1266 /* Prepare descriptor */
1267 desc = SEC_GET_FREE_DESC(sc);
1268 desc->sd_lt_used = 0;
1272 if (csp->csp_cipher_alg != 0)
1273 crypto_read_iv(crp, desc->sd_desc->shd_iv);
1275 if (crp->crp_cipher_key != NULL)
1276 memcpy(ses->ss_key, crp->crp_cipher_key, csp->csp_cipher_klen);
1278 if (crp->crp_auth_key != NULL)
1279 memcpy(ses->ss_mkey, crp->crp_auth_key, csp->csp_auth_klen);
1281 memcpy(desc->sd_desc->shd_key, ses->ss_key, csp->csp_cipher_klen);
1282 memcpy(desc->sd_desc->shd_mkey, ses->ss_mkey, csp->csp_auth_klen);
1284 error = ses->ss_eu->sem_make_desc(sc, csp, desc, crp);
1287 SEC_DESC_FREE_POINTERS(desc);
1288 SEC_DESC_PUT_BACK_LT(sc, desc);
1289 SEC_PUT_BACK_FREE_DESC(sc);
1290 SEC_UNLOCK(sc, descriptors);
1291 crp->crp_etype = error;
1297 * Skip DONE interrupt if this is not last request in burst, but only
1298 * if we are running on SEC 3.X. On SEC 2.X we have to enable DONE
1299 * signaling on each descriptor.
1301 if ((hint & CRYPTO_HINT_MORE) && sc->sc_version == 3)
1302 desc->sd_desc->shd_dn = 0;
1304 desc->sd_desc->shd_dn = 1;
1306 SEC_DESC_SYNC(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1307 SEC_DESC_SYNC_POINTERS(desc, BUS_DMASYNC_POSTREAD |
1308 BUS_DMASYNC_POSTWRITE);
1309 SEC_DESC_FREE2READY(sc);
1310 SEC_UNLOCK(sc, descriptors);
1312 /* Enqueue ready descriptors in hardware */
1319 sec_build_common_ns_desc(struct sec_softc *sc, struct sec_desc *desc,
1320 const struct crypto_session_params *csp, struct cryptop *crp)
1322 struct sec_hw_desc *hd = desc->sd_desc;
1325 hd->shd_desc_type = SEC_DT_COMMON_NONSNOOP;
1326 hd->shd_eu_sel1 = SEC_EU_NONE;
1329 /* Pointer 0: NULL */
1330 error = sec_make_pointer_direct(sc, desc, 0, 0, 0);
1334 /* Pointer 1: IV IN */
1335 error = sec_make_pointer_direct(sc, desc, 1, desc->sd_desc_paddr +
1336 offsetof(struct sec_hw_desc, shd_iv), csp->csp_ivlen);
1340 /* Pointer 2: Cipher Key */
1341 error = sec_make_pointer_direct(sc, desc, 2, desc->sd_desc_paddr +
1342 offsetof(struct sec_hw_desc, shd_key), csp->csp_cipher_klen);
1346 /* Pointer 3: Data IN */
1347 error = sec_make_pointer(sc, desc, 3, crp, crp->crp_payload_start,
1348 crp->crp_payload_length);
1352 /* Pointer 4: Data OUT */
1353 error = sec_make_pointer(sc, desc, 4, crp, crp->crp_payload_start,
1354 crp->crp_payload_length);
1358 /* Pointer 5: IV OUT (Not used: NULL) */
1359 error = sec_make_pointer_direct(sc, desc, 5, 0, 0);
1363 /* Pointer 6: NULL */
1364 error = sec_make_pointer_direct(sc, desc, 6, 0, 0);
1370 sec_build_common_s_desc(struct sec_softc *sc, struct sec_desc *desc,
1371 const struct crypto_session_params *csp, struct cryptop *crp)
1373 struct sec_hw_desc *hd = desc->sd_desc;
1374 u_int eu, mode, hashlen;
1377 error = sec_mdeu_config(csp, &eu, &mode, &hashlen);
1381 hd->shd_desc_type = SEC_DT_HMAC_SNOOP;
1382 hd->shd_eu_sel1 = eu;
1383 hd->shd_mode1 = mode;
1385 /* Pointer 0: HMAC Key */
1386 error = sec_make_pointer_direct(sc, desc, 0, desc->sd_desc_paddr +
1387 offsetof(struct sec_hw_desc, shd_mkey), csp->csp_auth_klen);
1391 /* Pointer 1: HMAC-Only Data IN */
1392 error = sec_make_pointer(sc, desc, 1, crp, crp->crp_aad_start,
1393 crp->crp_aad_length);
1397 /* Pointer 2: Cipher Key */
1398 error = sec_make_pointer_direct(sc, desc, 2, desc->sd_desc_paddr +
1399 offsetof(struct sec_hw_desc, shd_key), csp->csp_cipher_klen);
1403 /* Pointer 3: IV IN */
1404 error = sec_make_pointer_direct(sc, desc, 3, desc->sd_desc_paddr +
1405 offsetof(struct sec_hw_desc, shd_iv), csp->csp_ivlen);
1409 /* Pointer 4: Data IN */
1410 error = sec_make_pointer(sc, desc, 4, crp, crp->crp_payload_start,
1411 crp->crp_payload_length);
1415 /* Pointer 5: Data OUT */
1416 error = sec_make_pointer(sc, desc, 5, crp, crp->crp_payload_start,
1417 crp->crp_payload_length);
1421 /* Pointer 6: HMAC OUT */
1422 error = sec_make_pointer_direct(sc, desc, 6, desc->sd_desc_paddr +
1423 offsetof(struct sec_hw_desc, shd_digest), hashlen);
1431 sec_aesu_newsession(const struct crypto_session_params *csp)
1434 return (csp->csp_cipher_alg == CRYPTO_AES_CBC);
1438 sec_aesu_make_desc(struct sec_softc *sc,
1439 const struct crypto_session_params *csp, struct sec_desc *desc,
1440 struct cryptop *crp)
1442 struct sec_hw_desc *hd = desc->sd_desc;
1445 hd->shd_eu_sel0 = SEC_EU_AESU;
1446 hd->shd_mode0 = SEC_AESU_MODE_CBC;
1448 if (CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) {
1449 hd->shd_mode0 |= SEC_AESU_MODE_ED;
1454 if (csp->csp_mode == CSP_MODE_ETA)
1455 error = sec_build_common_s_desc(sc, desc, csp, crp);
1457 error = sec_build_common_ns_desc(sc, desc, csp, crp);
1465 sec_mdeu_can_handle(u_int alg)
1469 case CRYPTO_SHA1_HMAC:
1470 case CRYPTO_SHA2_256_HMAC:
1471 case CRYPTO_SHA2_384_HMAC:
1472 case CRYPTO_SHA2_512_HMAC:
1480 sec_mdeu_config(const struct crypto_session_params *csp, u_int *eu, u_int *mode,
1484 *mode = SEC_MDEU_MODE_PD | SEC_MDEU_MODE_INIT;
1487 switch (csp->csp_auth_alg) {
1488 case CRYPTO_SHA1_HMAC:
1489 *mode |= SEC_MDEU_MODE_HMAC;
1492 *eu = SEC_EU_MDEU_A;
1493 *mode |= SEC_MDEU_MODE_SHA1;
1494 *hashlen = SHA1_HASH_LEN;
1496 case CRYPTO_SHA2_256_HMAC:
1497 *mode |= SEC_MDEU_MODE_HMAC | SEC_MDEU_MODE_SHA256;
1498 *eu = SEC_EU_MDEU_A;
1500 case CRYPTO_SHA2_384_HMAC:
1501 *mode |= SEC_MDEU_MODE_HMAC | SEC_MDEU_MODE_SHA384;
1502 *eu = SEC_EU_MDEU_B;
1504 case CRYPTO_SHA2_512_HMAC:
1505 *mode |= SEC_MDEU_MODE_HMAC | SEC_MDEU_MODE_SHA512;
1506 *eu = SEC_EU_MDEU_B;
1512 if (*mode & SEC_MDEU_MODE_HMAC)
1513 *hashlen = SEC_HMAC_HASH_LEN;
1519 sec_mdeu_newsession(const struct crypto_session_params *csp)
1522 return (sec_mdeu_can_handle(csp->csp_auth_alg));
1526 sec_mdeu_make_desc(struct sec_softc *sc,
1527 const struct crypto_session_params *csp,
1528 struct sec_desc *desc, struct cryptop *crp)
1530 struct sec_hw_desc *hd = desc->sd_desc;
1531 u_int eu, mode, hashlen;
1534 error = sec_mdeu_config(csp, &eu, &mode, &hashlen);
1538 hd->shd_desc_type = SEC_DT_COMMON_NONSNOOP;
1539 hd->shd_eu_sel0 = eu;
1540 hd->shd_mode0 = mode;
1541 hd->shd_eu_sel1 = SEC_EU_NONE;
1544 /* Pointer 0: NULL */
1545 error = sec_make_pointer_direct(sc, desc, 0, 0, 0);
1549 /* Pointer 1: Context In (Not used: NULL) */
1550 error = sec_make_pointer_direct(sc, desc, 1, 0, 0);
1554 /* Pointer 2: HMAC Key (or NULL, depending on digest type) */
1555 if (hd->shd_mode0 & SEC_MDEU_MODE_HMAC)
1556 error = sec_make_pointer_direct(sc, desc, 2,
1557 desc->sd_desc_paddr + offsetof(struct sec_hw_desc,
1558 shd_mkey), csp->csp_auth_klen);
1560 error = sec_make_pointer_direct(sc, desc, 2, 0, 0);
1565 /* Pointer 3: Input Data */
1566 error = sec_make_pointer(sc, desc, 3, crp, crp->crp_payload_start,
1567 crp->crp_payload_length);
1571 /* Pointer 4: NULL */
1572 error = sec_make_pointer_direct(sc, desc, 4, 0, 0);
1576 /* Pointer 5: Hash out */
1577 error = sec_make_pointer_direct(sc, desc, 5, desc->sd_desc_paddr +
1578 offsetof(struct sec_hw_desc, shd_digest), hashlen);
1582 /* Pointer 6: NULL */
1583 error = sec_make_pointer_direct(sc, desc, 6, 0, 0);