1 /* $FreeBSD: src/sys/dev/hifn/hifn7751.c,v 1.5.2.5 2003/06/04 17:56:59 sam Exp $ */
2 /* $OpenBSD: hifn7751.c,v 1.120 2002/05/17 00:33:34 deraadt Exp $ */
5 * Invertex AEON / Hifn 7751 driver
6 * Copyright (c) 1999 Invertex Inc. All rights reserved.
7 * Copyright (c) 1999 Theo de Raadt
8 * Copyright (c) 2000-2001 Network Security Technologies, Inc.
9 * http://www.netsec.net
11 * This driver is based on a previous driver by Invertex, for which they
12 * requested: Please send any comments, feedback, bug-fixes, or feature
13 * requests to software@invertex.com.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. The name of the author may not be used to endorse or promote products
25 * derived from this software without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
28 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
29 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
30 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
31 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * Effort sponsored in part by the Defense Advanced Research Projects
39 * Agency (DARPA) and Air Force Research Laboratory, Air Force
40 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
45 * Driver for the Hifn 7751 encryption processor.
49 #include <sys/param.h>
50 #include <sys/systm.h>
52 #include <sys/errno.h>
53 #include <sys/malloc.h>
54 #include <sys/kernel.h>
56 #include <sys/sysctl.h>
61 #include <machine/clock.h>
62 #include <machine/bus.h>
63 #include <machine/resource.h>
67 #include <opencrypto/cryptodev.h>
68 #include <sys/random.h>
70 #include <pci/pcivar.h>
71 #include <pci/pcireg.h>
74 #include <dev/rndtest/rndtest.h>
76 #include <dev/hifn/hifn7751reg.h>
77 #include <dev/hifn/hifn7751var.h>
80 * Prototypes and count for the pci_device structure
82 static int hifn_probe(device_t);
83 static int hifn_attach(device_t);
84 static int hifn_detach(device_t);
85 static int hifn_suspend(device_t);
86 static int hifn_resume(device_t);
87 static void hifn_shutdown(device_t);
89 static device_method_t hifn_methods[] = {
90 /* Device interface */
91 DEVMETHOD(device_probe, hifn_probe),
92 DEVMETHOD(device_attach, hifn_attach),
93 DEVMETHOD(device_detach, hifn_detach),
94 DEVMETHOD(device_suspend, hifn_suspend),
95 DEVMETHOD(device_resume, hifn_resume),
96 DEVMETHOD(device_shutdown, hifn_shutdown),
99 DEVMETHOD(bus_print_child, bus_generic_print_child),
100 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
104 static driver_t hifn_driver = {
107 sizeof (struct hifn_softc)
109 static devclass_t hifn_devclass;
111 DRIVER_MODULE(hifn, pci, hifn_driver, hifn_devclass, 0, 0);
112 MODULE_DEPEND(hifn, crypto, 1, 1, 1);
114 MODULE_DEPEND(hifn, rndtest, 1, 1, 1);
117 static void hifn_reset_board(struct hifn_softc *, int);
118 static void hifn_reset_puc(struct hifn_softc *);
119 static void hifn_puc_wait(struct hifn_softc *);
120 static int hifn_enable_crypto(struct hifn_softc *);
121 static void hifn_set_retry(struct hifn_softc *sc);
122 static void hifn_init_dma(struct hifn_softc *);
123 static void hifn_init_pci_registers(struct hifn_softc *);
124 static int hifn_sramsize(struct hifn_softc *);
125 static int hifn_dramsize(struct hifn_softc *);
126 static int hifn_ramtype(struct hifn_softc *);
127 static void hifn_sessions(struct hifn_softc *);
128 static void hifn_intr(void *);
129 static u_int hifn_write_command(struct hifn_command *, u_int8_t *);
130 static u_int32_t hifn_next_signature(u_int32_t a, u_int cnt);
131 static int hifn_newsession(void *, u_int32_t *, struct cryptoini *);
132 static int hifn_freesession(void *, u_int64_t);
133 static int hifn_process(void *, struct cryptop *, int);
134 static void hifn_callback(struct hifn_softc *, struct hifn_command *, u_int8_t *);
135 static int hifn_crypto(struct hifn_softc *, struct hifn_command *, struct cryptop *, int);
136 static int hifn_readramaddr(struct hifn_softc *, int, u_int8_t *);
137 static int hifn_writeramaddr(struct hifn_softc *, int, u_int8_t *);
138 static int hifn_dmamap_load_src(struct hifn_softc *, struct hifn_command *);
139 static int hifn_dmamap_load_dst(struct hifn_softc *, struct hifn_command *);
140 static int hifn_init_pubrng(struct hifn_softc *);
142 static void hifn_rng(void *);
144 static void hifn_tick(void *);
145 static void hifn_abort(struct hifn_softc *);
146 static void hifn_alloc_slot(struct hifn_softc *, int *, int *, int *, int *);
148 static void hifn_write_reg_0(struct hifn_softc *, bus_size_t, u_int32_t);
149 static void hifn_write_reg_1(struct hifn_softc *, bus_size_t, u_int32_t);
151 static __inline__ u_int32_t
152 READ_REG_0(struct hifn_softc *sc, bus_size_t reg)
154 u_int32_t v = bus_space_read_4(sc->sc_st0, sc->sc_sh0, reg);
155 sc->sc_bar0_lastreg = (bus_size_t) -1;
158 #define WRITE_REG_0(sc, reg, val) hifn_write_reg_0(sc, reg, val)
160 static __inline__ u_int32_t
161 READ_REG_1(struct hifn_softc *sc, bus_size_t reg)
163 u_int32_t v = bus_space_read_4(sc->sc_st1, sc->sc_sh1, reg);
164 sc->sc_bar1_lastreg = (bus_size_t) -1;
167 #define WRITE_REG_1(sc, reg, val) hifn_write_reg_1(sc, reg, val)
169 SYSCTL_NODE(_hw, OID_AUTO, hifn, CTLFLAG_RD, 0, "Hifn driver parameters");
172 static int hifn_debug = 0;
173 SYSCTL_INT(_hw_hifn, OID_AUTO, debug, CTLFLAG_RW, &hifn_debug,
174 0, "control debugging msgs");
177 static struct hifn_stats hifnstats;
178 SYSCTL_STRUCT(_hw_hifn, OID_AUTO, stats, CTLFLAG_RD, &hifnstats,
179 hifn_stats, "driver statistics");
180 static int hifn_maxbatch = 1;
181 SYSCTL_INT(_hw_hifn, OID_AUTO, maxbatch, CTLFLAG_RW, &hifn_maxbatch,
182 0, "max ops to batch w/o interrupt");
185 * Probe for a supported device. The PCI vendor and device
186 * IDs are used to detect devices we know how to handle.
189 hifn_probe(device_t dev)
191 if (pci_get_vendor(dev) == PCI_VENDOR_INVERTEX &&
192 pci_get_device(dev) == PCI_PRODUCT_INVERTEX_AEON)
194 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
195 (pci_get_device(dev) == PCI_PRODUCT_HIFN_7751 ||
196 pci_get_device(dev) == PCI_PRODUCT_HIFN_7951 ||
197 pci_get_device(dev) == PCI_PRODUCT_HIFN_7811))
199 if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
200 pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751)
206 hifn_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
208 bus_addr_t *paddr = (bus_addr_t*) arg;
209 *paddr = segs->ds_addr;
213 hifn_partname(struct hifn_softc *sc)
215 /* XXX sprintf numbers when not decoded */
216 switch (pci_get_vendor(sc->sc_dev)) {
217 case PCI_VENDOR_HIFN:
218 switch (pci_get_device(sc->sc_dev)) {
219 case PCI_PRODUCT_HIFN_6500: return "Hifn 6500";
220 case PCI_PRODUCT_HIFN_7751: return "Hifn 7751";
221 case PCI_PRODUCT_HIFN_7811: return "Hifn 7811";
222 case PCI_PRODUCT_HIFN_7951: return "Hifn 7951";
224 return "Hifn unknown-part";
225 case PCI_VENDOR_INVERTEX:
226 switch (pci_get_device(sc->sc_dev)) {
227 case PCI_PRODUCT_INVERTEX_AEON: return "Invertex AEON";
229 return "Invertex unknown-part";
230 case PCI_VENDOR_NETSEC:
231 switch (pci_get_device(sc->sc_dev)) {
232 case PCI_PRODUCT_NETSEC_7751: return "NetSec 7751";
234 return "NetSec unknown-part";
236 return "Unknown-vendor unknown-part";
240 default_harvest(struct rndtest_state *rsp, void *buf, u_int count)
242 u_int32_t *p = (u_int32_t *)buf;
243 for (count /= sizeof (u_int32_t); count; count--)
244 add_true_randomness(*p++);
248 * Attach an interface that successfully probed.
251 hifn_attach(device_t dev)
253 struct hifn_softc *sc = device_get_softc(dev);
260 KASSERT(sc != NULL, ("hifn_attach: null software carrier!"));
261 bzero(sc, sizeof (*sc));
264 /* XXX handle power management */
267 * The 7951 has a random number generator and
268 * public key support; note this.
270 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
271 pci_get_device(dev) == PCI_PRODUCT_HIFN_7951)
272 sc->sc_flags = HIFN_HAS_RNG | HIFN_HAS_PUBLIC;
274 * The 7811 has a random number generator and
275 * we also note it's identity 'cuz of some quirks.
277 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
278 pci_get_device(dev) == PCI_PRODUCT_HIFN_7811)
279 sc->sc_flags |= HIFN_IS_7811 | HIFN_HAS_RNG;
282 * Configure support for memory-mapped access to
283 * registers and for DMA operations.
285 #define PCIM_ENA (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN)
286 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
288 pci_write_config(dev, PCIR_COMMAND, cmd, 4);
289 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
290 if ((cmd & PCIM_ENA) != PCIM_ENA) {
291 device_printf(dev, "failed to enable %s\n",
292 (cmd & PCIM_ENA) == 0 ?
293 "memory mapping & bus mastering" :
294 (cmd & PCIM_CMD_MEMEN) == 0 ?
295 "memory mapping" : "bus mastering");
301 * Setup PCI resources. Note that we record the bus
302 * tag and handle for each register mapping, this is
303 * used by the READ_REG_0, WRITE_REG_0, READ_REG_1,
304 * and WRITE_REG_1 macros throughout the driver.
307 sc->sc_bar0res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
308 0, ~0, 1, RF_ACTIVE);
309 if (sc->sc_bar0res == NULL) {
310 device_printf(dev, "cannot map bar%d register space\n", 0);
313 sc->sc_st0 = rman_get_bustag(sc->sc_bar0res);
314 sc->sc_sh0 = rman_get_bushandle(sc->sc_bar0res);
315 sc->sc_bar0_lastreg = (bus_size_t) -1;
318 sc->sc_bar1res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
319 0, ~0, 1, RF_ACTIVE);
320 if (sc->sc_bar1res == NULL) {
321 device_printf(dev, "cannot map bar%d register space\n", 1);
324 sc->sc_st1 = rman_get_bustag(sc->sc_bar1res);
325 sc->sc_sh1 = rman_get_bushandle(sc->sc_bar1res);
326 sc->sc_bar1_lastreg = (bus_size_t) -1;
331 * Setup the area where the Hifn DMA's descriptors
332 * and associated data structures.
334 if (bus_dma_tag_create(NULL, /* parent */
335 1, 0, /* alignment,boundary */
336 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
337 BUS_SPACE_MAXADDR, /* highaddr */
338 NULL, NULL, /* filter, filterarg */
339 HIFN_MAX_DMALEN, /* maxsize */
340 MAX_SCATTER, /* nsegments */
341 HIFN_MAX_SEGLEN, /* maxsegsize */
342 BUS_DMA_ALLOCNOW, /* flags */
344 device_printf(dev, "cannot allocate DMA tag\n");
347 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &sc->sc_dmamap)) {
348 device_printf(dev, "cannot create dma map\n");
349 bus_dma_tag_destroy(sc->sc_dmat);
352 if (bus_dmamem_alloc(sc->sc_dmat, (void**) &kva, BUS_DMA_NOWAIT, &sc->sc_dmamap)) {
353 device_printf(dev, "cannot alloc dma buffer\n");
354 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
355 bus_dma_tag_destroy(sc->sc_dmat);
358 if (bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, kva,
359 sizeof (*sc->sc_dma),
360 hifn_dmamap_cb, &sc->sc_dma_physaddr,
362 device_printf(dev, "cannot load dma map\n");
363 bus_dmamem_free(sc->sc_dmat, kva, sc->sc_dmamap);
364 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
365 bus_dma_tag_destroy(sc->sc_dmat);
368 sc->sc_dma = (struct hifn_dma *)kva;
369 bzero(sc->sc_dma, sizeof(*sc->sc_dma));
371 KASSERT(sc->sc_st0 != NULL, ("hifn_attach: null bar0 tag!"));
372 KASSERT(sc->sc_sh0 != NULL, ("hifn_attach: null bar0 handle!"));
373 KASSERT(sc->sc_st1 != NULL, ("hifn_attach: null bar1 tag!"));
374 KASSERT(sc->sc_sh1 != NULL, ("hifn_attach: null bar1 handle!"));
377 * Reset the board and do the ``secret handshake''
378 * to enable the crypto support. Then complete the
379 * initialization procedure by setting up the interrupt
380 * and hooking in to the system crypto support so we'll
381 * get used for system services like the crypto device,
382 * IPsec, RNG device, etc.
384 hifn_reset_board(sc, 0);
386 if (hifn_enable_crypto(sc) != 0) {
387 device_printf(dev, "crypto enabling failed\n");
393 hifn_init_pci_registers(sc);
395 if (hifn_ramtype(sc))
398 if (sc->sc_drammodel == 0)
404 * Workaround for NetSec 7751 rev A: half ram size because two
405 * of the address lines were left floating
407 if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
408 pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751 &&
409 pci_get_revid(dev) == 0x61) /*XXX???*/
410 sc->sc_ramsize >>= 1;
413 * Arrange the interrupt line.
416 sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
417 0, ~0, 1, RF_SHAREABLE|RF_ACTIVE);
418 if (sc->sc_irq == NULL) {
419 device_printf(dev, "could not map interrupt\n");
423 * NB: Network code assumes we are blocked with splimp()
424 * so make sure the IRQ is marked appropriately.
426 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_NET,
427 hifn_intr, sc, &sc->sc_intrhand)) {
428 device_printf(dev, "could not setup interrupt\n");
435 * NB: Keep only the low 16 bits; this masks the chip id
438 rev = READ_REG_1(sc, HIFN_1_REVID) & 0xffff;
440 rseg = sc->sc_ramsize / 1024;
442 if (sc->sc_ramsize >= (1024 * 1024)) {
446 device_printf(sc->sc_dev, "%s, rev %u, %d%cB %cram, %u sessions\n",
447 hifn_partname(sc), rev,
448 rseg, rbase, sc->sc_drammodel ? 'd' : 's',
451 sc->sc_cid = crypto_get_driverid(0);
452 if (sc->sc_cid < 0) {
453 device_printf(dev, "could not get crypto driver id\n");
457 WRITE_REG_0(sc, HIFN_0_PUCNFG,
458 READ_REG_0(sc, HIFN_0_PUCNFG) | HIFN_PUCNFG_CHIPID);
459 ena = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
462 case HIFN_PUSTAT_ENA_2:
463 crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0,
464 hifn_newsession, hifn_freesession, hifn_process, sc);
465 crypto_register(sc->sc_cid, CRYPTO_ARC4, 0, 0,
466 hifn_newsession, hifn_freesession, hifn_process, sc);
468 case HIFN_PUSTAT_ENA_1:
469 crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0,
470 hifn_newsession, hifn_freesession, hifn_process, sc);
471 crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0,
472 hifn_newsession, hifn_freesession, hifn_process, sc);
473 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0,
474 hifn_newsession, hifn_freesession, hifn_process, sc);
475 crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0,
476 hifn_newsession, hifn_freesession, hifn_process, sc);
477 crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0,
478 hifn_newsession, hifn_freesession, hifn_process, sc);
482 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
483 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
485 if (sc->sc_flags & (HIFN_HAS_PUBLIC | HIFN_HAS_RNG))
486 hifn_init_pubrng(sc);
488 /* NB: 1 means the callout runs w/o Giant locked */
489 callout_init(&sc->sc_tickto);
490 callout_reset(&sc->sc_tickto, hz, hifn_tick, sc);
495 bus_teardown_intr(dev, sc->sc_irq, sc->sc_intrhand);
497 /* XXX don't store rid */
498 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
500 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap);
501 bus_dmamem_free(sc->sc_dmat, sc->sc_dma, sc->sc_dmamap);
502 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
503 bus_dma_tag_destroy(sc->sc_dmat);
505 /* Turn off DMA polling */
506 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
507 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
509 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR1, sc->sc_bar1res);
511 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR0, sc->sc_bar0res);
517 * Detach an interface that successfully probed.
520 hifn_detach(device_t dev)
522 struct hifn_softc *sc = device_get_softc(dev);
525 KASSERT(sc != NULL, ("hifn_detach: null software carrier!"));
529 /*XXX other resources */
530 callout_stop(&sc->sc_tickto);
531 callout_stop(&sc->sc_rngto);
534 rndtest_detach(sc->sc_rndtest);
537 /* Turn off DMA polling */
538 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
539 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
541 crypto_unregister_all(sc->sc_cid);
543 bus_generic_detach(dev); /*XXX should be no children, right? */
545 bus_teardown_intr(dev, sc->sc_irq, sc->sc_intrhand);
546 /* XXX don't store rid */
547 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
549 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap);
550 bus_dmamem_free(sc->sc_dmat, sc->sc_dma, sc->sc_dmamap);
551 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
552 bus_dma_tag_destroy(sc->sc_dmat);
554 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR1, sc->sc_bar1res);
555 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR0, sc->sc_bar0res);
563 * Stop all chip I/O so that the kernel's probe routines don't
564 * get confused by errant DMAs when rebooting.
567 hifn_shutdown(device_t dev)
570 hifn_stop(device_get_softc(dev));
575 * Device suspend routine. Stop the interface and save some PCI
576 * settings in case the BIOS doesn't restore them properly on
580 hifn_suspend(device_t dev)
582 struct hifn_softc *sc = device_get_softc(dev);
587 for (i = 0; i < 5; i++)
588 sc->saved_maps[i] = pci_read_config(dev, PCIR_MAPS + i * 4, 4);
589 sc->saved_biosaddr = pci_read_config(dev, PCIR_BIOS, 4);
590 sc->saved_intline = pci_read_config(dev, PCIR_INTLINE, 1);
591 sc->saved_cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1);
592 sc->saved_lattimer = pci_read_config(dev, PCIR_LATTIMER, 1);
594 sc->sc_suspended = 1;
600 * Device resume routine. Restore some PCI settings in case the BIOS
601 * doesn't, re-enable busmastering, and restart the interface if
605 hifn_resume(device_t dev)
607 struct hifn_softc *sc = device_get_softc(dev);
611 /* better way to do this? */
612 for (i = 0; i < 5; i++)
613 pci_write_config(dev, PCIR_MAPS + i * 4, sc->saved_maps[i], 4);
614 pci_write_config(dev, PCIR_BIOS, sc->saved_biosaddr, 4);
615 pci_write_config(dev, PCIR_INTLINE, sc->saved_intline, 1);
616 pci_write_config(dev, PCIR_CACHELNSZ, sc->saved_cachelnsz, 1);
617 pci_write_config(dev, PCIR_LATTIMER, sc->saved_lattimer, 1);
619 /* reenable busmastering */
620 pci_enable_busmaster(dev);
621 pci_enable_io(dev, HIFN_RES);
623 /* reinitialize interface if necessary */
624 if (ifp->if_flags & IFF_UP)
627 sc->sc_suspended = 0;
633 hifn_init_pubrng(struct hifn_softc *sc)
639 sc->sc_rndtest = rndtest_attach(sc->sc_dev);
641 sc->sc_harvest = rndtest_harvest;
643 sc->sc_harvest = default_harvest;
645 sc->sc_harvest = default_harvest;
647 if ((sc->sc_flags & HIFN_IS_7811) == 0) {
648 /* Reset 7951 public key/rng engine */
649 WRITE_REG_1(sc, HIFN_1_PUB_RESET,
650 READ_REG_1(sc, HIFN_1_PUB_RESET) | HIFN_PUBRST_RESET);
652 for (i = 0; i < 100; i++) {
654 if ((READ_REG_1(sc, HIFN_1_PUB_RESET) &
655 HIFN_PUBRST_RESET) == 0)
660 device_printf(sc->sc_dev, "public key init failed\n");
666 /* Enable the rng, if available */
667 if (sc->sc_flags & HIFN_HAS_RNG) {
668 if (sc->sc_flags & HIFN_IS_7811) {
669 r = READ_REG_1(sc, HIFN_1_7811_RNGENA);
670 if (r & HIFN_7811_RNGENA_ENA) {
671 r &= ~HIFN_7811_RNGENA_ENA;
672 WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
674 WRITE_REG_1(sc, HIFN_1_7811_RNGCFG,
675 HIFN_7811_RNGCFG_DEFL);
676 r |= HIFN_7811_RNGENA_ENA;
677 WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
679 WRITE_REG_1(sc, HIFN_1_RNG_CONFIG,
680 READ_REG_1(sc, HIFN_1_RNG_CONFIG) |
685 sc->sc_rnghz = hz / 100;
688 /* NB: 1 means the callout runs w/o Giant locked */
689 callout_init(&sc->sc_rngto);
690 callout_reset(&sc->sc_rngto, sc->sc_rnghz, hifn_rng, sc);
694 /* Enable public key engine, if available */
695 if (sc->sc_flags & HIFN_HAS_PUBLIC) {
696 WRITE_REG_1(sc, HIFN_1_PUB_IEN, HIFN_PUBIEN_DONE);
697 sc->sc_dmaier |= HIFN_DMAIER_PUBDONE;
698 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
708 #define RANDOM_BITS(n) (n)*sizeof (u_int32_t), (n)*sizeof (u_int32_t)*NBBY, 0
709 struct hifn_softc *sc = vsc;
710 u_int32_t sts, num[2];
713 if (sc->sc_flags & HIFN_IS_7811) {
714 for (i = 0; i < 5; i++) {
715 sts = READ_REG_1(sc, HIFN_1_7811_RNGSTS);
716 if (sts & HIFN_7811_RNGSTS_UFL) {
717 device_printf(sc->sc_dev,
718 "RNG underflow: disabling\n");
721 if ((sts & HIFN_7811_RNGSTS_RDY) == 0)
725 * There are at least two words in the RNG FIFO
728 num[0] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
729 num[1] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
730 /* NB: discard first data read */
734 (*sc->sc_harvest)(sc->sc_rndtest,
738 num[0] = READ_REG_1(sc, HIFN_1_RNG_DATA);
740 /* NB: discard first data read */
744 (*sc->sc_harvest)(sc->sc_rndtest,
745 num, sizeof (num[0]));
748 callout_reset(&sc->sc_rngto, sc->sc_rnghz, hifn_rng, sc);
754 hifn_puc_wait(struct hifn_softc *sc)
758 for (i = 5000; i > 0; i--) {
760 if (!(READ_REG_0(sc, HIFN_0_PUCTRL) & HIFN_PUCTRL_RESET))
764 device_printf(sc->sc_dev, "proc unit did not reset\n");
768 * Reset the processing unit.
771 hifn_reset_puc(struct hifn_softc *sc)
773 /* Reset processing unit */
774 WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
779 * Set the Retry and TRDY registers; note that we set them to
780 * zero because the 7811 locks up when forced to retry (section
781 * 3.6 of "Specification Update SU-0014-04". Not clear if we
782 * should do this for all Hifn parts, but it doesn't seem to hurt.
785 hifn_set_retry(struct hifn_softc *sc)
787 /* NB: RETRY only responds to 8-bit reads/writes */
788 pci_write_config(sc->sc_dev, HIFN_RETRY_TIMEOUT, 0, 1);
789 pci_write_config(sc->sc_dev, HIFN_TRDY_TIMEOUT, 0, 4);
793 * Resets the board. Values in the regesters are left as is
794 * from the reset (i.e. initial values are assigned elsewhere).
797 hifn_reset_board(struct hifn_softc *sc, int full)
802 * Set polling in the DMA configuration register to zero. 0x7 avoids
803 * resetting the board and zeros out the other fields.
805 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
806 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
809 * Now that polling has been disabled, we have to wait 1 ms
810 * before resetting the board.
814 /* Reset the DMA unit */
816 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE);
819 WRITE_REG_1(sc, HIFN_1_DMA_CNFG,
820 HIFN_DMACNFG_MODE | HIFN_DMACNFG_MSTRESET);
824 KASSERT(sc->sc_dma != NULL, ("hifn_reset_board: null DMA tag!"));
825 bzero(sc->sc_dma, sizeof(*sc->sc_dma));
827 /* Bring dma unit out of reset */
828 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
829 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
834 if (sc->sc_flags & HIFN_IS_7811) {
835 for (reg = 0; reg < 1000; reg++) {
836 if (READ_REG_1(sc, HIFN_1_7811_MIPSRST) &
837 HIFN_MIPSRST_CRAMINIT)
842 printf(": cram init timeout\n");
847 hifn_next_signature(u_int32_t a, u_int cnt)
852 for (i = 0; i < cnt; i++) {
862 a = (v & 1) ^ (a << 1);
873 static struct pci2id pci2id[] = {
876 PCI_PRODUCT_HIFN_7951,
877 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
878 0x00, 0x00, 0x00, 0x00, 0x00 }
881 PCI_PRODUCT_NETSEC_7751,
882 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
883 0x00, 0x00, 0x00, 0x00, 0x00 }
886 PCI_PRODUCT_INVERTEX_AEON,
887 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
888 0x00, 0x00, 0x00, 0x00, 0x00 }
891 PCI_PRODUCT_HIFN_7811,
892 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
893 0x00, 0x00, 0x00, 0x00, 0x00 }
896 * Other vendors share this PCI ID as well, such as
897 * http://www.powercrypt.com, and obviously they also
901 PCI_PRODUCT_HIFN_7751,
902 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
903 0x00, 0x00, 0x00, 0x00, 0x00 }
908 * Checks to see if crypto is already enabled. If crypto isn't enable,
909 * "hifn_enable_crypto" is called to enable it. The check is important,
910 * as enabling crypto twice will lock the board.
913 hifn_enable_crypto(struct hifn_softc *sc)
915 u_int32_t dmacfg, ramcfg, encl, addr, i;
918 for (i = 0; i < sizeof(pci2id)/sizeof(pci2id[0]); i++) {
919 if (pci2id[i].pci_vendor == pci_get_vendor(sc->sc_dev) &&
920 pci2id[i].pci_prod == pci_get_device(sc->sc_dev)) {
921 offtbl = pci2id[i].card_id;
925 if (offtbl == NULL) {
926 device_printf(sc->sc_dev, "Unknown card!\n");
930 ramcfg = READ_REG_0(sc, HIFN_0_PUCNFG);
931 dmacfg = READ_REG_1(sc, HIFN_1_DMA_CNFG);
934 * The RAM config register's encrypt level bit needs to be set before
935 * every read performed on the encryption level register.
937 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
939 encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
942 * Make sure we don't re-unlock. Two unlocks kills chip until the
945 if (encl == HIFN_PUSTAT_ENA_1 || encl == HIFN_PUSTAT_ENA_2) {
948 device_printf(sc->sc_dev,
949 "Strong crypto already enabled!\n");
954 if (encl != 0 && encl != HIFN_PUSTAT_ENA_0) {
957 device_printf(sc->sc_dev,
958 "Unknown encryption level 0x%x\n", encl);
963 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_UNLOCK |
964 HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
966 addr = READ_REG_1(sc, HIFN_UNLOCK_SECRET1);
968 WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, 0);
971 for (i = 0; i <= 12; i++) {
972 addr = hifn_next_signature(addr, offtbl[i] + 0x101);
973 WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, addr);
978 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
979 encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
983 if (encl != HIFN_PUSTAT_ENA_1 && encl != HIFN_PUSTAT_ENA_2)
984 device_printf(sc->sc_dev, "Engine is permanently "
985 "locked until next system reset!\n");
987 device_printf(sc->sc_dev, "Engine enabled "
993 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg);
994 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, dmacfg);
997 case HIFN_PUSTAT_ENA_1:
998 case HIFN_PUSTAT_ENA_2:
1000 case HIFN_PUSTAT_ENA_0:
1002 device_printf(sc->sc_dev, "disabled");
1010 * Give initial values to the registers listed in the "Register Space"
1011 * section of the HIFN Software Development reference manual.
1014 hifn_init_pci_registers(struct hifn_softc *sc)
1016 /* write fixed values needed by the Initialization registers */
1017 WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
1018 WRITE_REG_0(sc, HIFN_0_FIFOCNFG, HIFN_FIFOCNFG_THRESHOLD);
1019 WRITE_REG_0(sc, HIFN_0_PUIER, HIFN_PUIER_DSTOVER);
1021 /* write all 4 ring address registers */
1022 WRITE_REG_1(sc, HIFN_1_DMA_CRAR, sc->sc_dma_physaddr +
1023 offsetof(struct hifn_dma, cmdr[0]));
1024 WRITE_REG_1(sc, HIFN_1_DMA_SRAR, sc->sc_dma_physaddr +
1025 offsetof(struct hifn_dma, srcr[0]));
1026 WRITE_REG_1(sc, HIFN_1_DMA_DRAR, sc->sc_dma_physaddr +
1027 offsetof(struct hifn_dma, dstr[0]));
1028 WRITE_REG_1(sc, HIFN_1_DMA_RRAR, sc->sc_dma_physaddr +
1029 offsetof(struct hifn_dma, resr[0]));
1033 /* write status register */
1034 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1035 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS |
1036 HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_C_CTRL_DIS |
1037 HIFN_DMACSR_D_ABORT | HIFN_DMACSR_D_DONE | HIFN_DMACSR_D_LAST |
1038 HIFN_DMACSR_D_WAIT | HIFN_DMACSR_D_OVER |
1039 HIFN_DMACSR_R_ABORT | HIFN_DMACSR_R_DONE | HIFN_DMACSR_R_LAST |
1040 HIFN_DMACSR_R_WAIT | HIFN_DMACSR_R_OVER |
1041 HIFN_DMACSR_S_ABORT | HIFN_DMACSR_S_DONE | HIFN_DMACSR_S_LAST |
1042 HIFN_DMACSR_S_WAIT |
1043 HIFN_DMACSR_C_ABORT | HIFN_DMACSR_C_DONE | HIFN_DMACSR_C_LAST |
1044 HIFN_DMACSR_C_WAIT |
1045 HIFN_DMACSR_ENGINE |
1046 ((sc->sc_flags & HIFN_HAS_PUBLIC) ?
1047 HIFN_DMACSR_PUBDONE : 0) |
1048 ((sc->sc_flags & HIFN_IS_7811) ?
1049 HIFN_DMACSR_ILLW | HIFN_DMACSR_ILLR : 0));
1051 sc->sc_d_busy = sc->sc_r_busy = sc->sc_s_busy = sc->sc_c_busy = 0;
1052 sc->sc_dmaier |= HIFN_DMAIER_R_DONE | HIFN_DMAIER_C_ABORT |
1053 HIFN_DMAIER_D_OVER | HIFN_DMAIER_R_OVER |
1054 HIFN_DMAIER_S_ABORT | HIFN_DMAIER_D_ABORT | HIFN_DMAIER_R_ABORT |
1055 ((sc->sc_flags & HIFN_IS_7811) ?
1056 HIFN_DMAIER_ILLW | HIFN_DMAIER_ILLR : 0);
1057 sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
1058 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
1060 WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
1061 HIFN_PUCNFG_DRFR_128 | HIFN_PUCNFG_TCALLPHASES |
1062 HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32 |
1063 (sc->sc_drammodel ? HIFN_PUCNFG_DRAM : HIFN_PUCNFG_SRAM));
1065 WRITE_REG_0(sc, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
1066 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
1067 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE | HIFN_DMACNFG_LAST |
1068 ((HIFN_POLL_FREQUENCY << 16 ) & HIFN_DMACNFG_POLLFREQ) |
1069 ((HIFN_POLL_SCALAR << 8) & HIFN_DMACNFG_POLLINVAL));
1073 * The maximum number of sessions supported by the card
1074 * is dependent on the amount of context ram, which
1075 * encryption algorithms are enabled, and how compression
1076 * is configured. This should be configured before this
1077 * routine is called.
1080 hifn_sessions(struct hifn_softc *sc)
1085 pucnfg = READ_REG_0(sc, HIFN_0_PUCNFG);
1087 if (pucnfg & HIFN_PUCNFG_COMPSING) {
1088 if (pucnfg & HIFN_PUCNFG_ENCCNFG)
1093 ((sc->sc_ramsize - 32768) / ctxsize);
1095 sc->sc_maxses = sc->sc_ramsize / 16384;
1097 if (sc->sc_maxses > 2048)
1098 sc->sc_maxses = 2048;
1102 * Determine ram type (sram or dram). Board should be just out of a reset
1103 * state when this is called.
1106 hifn_ramtype(struct hifn_softc *sc)
1108 u_int8_t data[8], dataexpect[8];
1111 for (i = 0; i < sizeof(data); i++)
1112 data[i] = dataexpect[i] = 0x55;
1113 if (hifn_writeramaddr(sc, 0, data))
1115 if (hifn_readramaddr(sc, 0, data))
1117 if (bcmp(data, dataexpect, sizeof(data)) != 0) {
1118 sc->sc_drammodel = 1;
1122 for (i = 0; i < sizeof(data); i++)
1123 data[i] = dataexpect[i] = 0xaa;
1124 if (hifn_writeramaddr(sc, 0, data))
1126 if (hifn_readramaddr(sc, 0, data))
1128 if (bcmp(data, dataexpect, sizeof(data)) != 0) {
1129 sc->sc_drammodel = 1;
1136 #define HIFN_SRAM_MAX (32 << 20)
1137 #define HIFN_SRAM_STEP_SIZE 16384
1138 #define HIFN_SRAM_GRANULARITY (HIFN_SRAM_MAX / HIFN_SRAM_STEP_SIZE)
1141 hifn_sramsize(struct hifn_softc *sc)
1145 u_int8_t dataexpect[sizeof(data)];
1148 for (i = 0; i < sizeof(data); i++)
1149 data[i] = dataexpect[i] = i ^ 0x5a;
1151 for (i = HIFN_SRAM_GRANULARITY - 1; i >= 0; i--) {
1152 a = i * HIFN_SRAM_STEP_SIZE;
1153 bcopy(&i, data, sizeof(i));
1154 hifn_writeramaddr(sc, a, data);
1157 for (i = 0; i < HIFN_SRAM_GRANULARITY; i++) {
1158 a = i * HIFN_SRAM_STEP_SIZE;
1159 bcopy(&i, dataexpect, sizeof(i));
1160 if (hifn_readramaddr(sc, a, data) < 0)
1162 if (bcmp(data, dataexpect, sizeof(data)) != 0)
1164 sc->sc_ramsize = a + HIFN_SRAM_STEP_SIZE;
1171 * XXX For dram boards, one should really try all of the
1172 * HIFN_PUCNFG_DSZ_*'s. This just assumes that PUCNFG
1173 * is already set up correctly.
1176 hifn_dramsize(struct hifn_softc *sc)
1180 cnfg = READ_REG_0(sc, HIFN_0_PUCNFG) &
1181 HIFN_PUCNFG_DRAMMASK;
1182 sc->sc_ramsize = 1 << ((cnfg >> 13) + 18);
1187 hifn_alloc_slot(struct hifn_softc *sc, int *cmdp, int *srcp, int *dstp, int *resp)
1189 struct hifn_dma *dma = sc->sc_dma;
1191 if (dma->cmdi == HIFN_D_CMD_RSIZE) {
1193 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID |
1194 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1195 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
1196 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1198 *cmdp = dma->cmdi++;
1199 dma->cmdk = dma->cmdi;
1201 if (dma->srci == HIFN_D_SRC_RSIZE) {
1203 dma->srcr[HIFN_D_SRC_RSIZE].l = htole32(HIFN_D_VALID |
1204 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1205 HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
1206 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1208 *srcp = dma->srci++;
1209 dma->srck = dma->srci;
1211 if (dma->dsti == HIFN_D_DST_RSIZE) {
1213 dma->dstr[HIFN_D_DST_RSIZE].l = htole32(HIFN_D_VALID |
1214 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1215 HIFN_DSTR_SYNC(sc, HIFN_D_DST_RSIZE,
1216 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1218 *dstp = dma->dsti++;
1219 dma->dstk = dma->dsti;
1221 if (dma->resi == HIFN_D_RES_RSIZE) {
1223 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID |
1224 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1225 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
1226 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1228 *resp = dma->resi++;
1229 dma->resk = dma->resi;
1233 hifn_writeramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
1235 struct hifn_dma *dma = sc->sc_dma;
1236 hifn_base_command_t wc;
1237 const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
1238 int r, cmdi, resi, srci, dsti;
1240 wc.masks = htole16(3 << 13);
1241 wc.session_num = htole16(addr >> 14);
1242 wc.total_source_count = htole16(8);
1243 wc.total_dest_count = htole16(addr & 0x3fff);
1245 hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
1247 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1248 HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
1249 HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
1251 /* build write command */
1252 bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
1253 *(hifn_base_command_t *)dma->command_bufs[cmdi] = wc;
1254 bcopy(data, &dma->test_src, sizeof(dma->test_src));
1256 dma->srcr[srci].p = htole32(sc->sc_dma_physaddr
1257 + offsetof(struct hifn_dma, test_src));
1258 dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr
1259 + offsetof(struct hifn_dma, test_dst));
1261 dma->cmdr[cmdi].l = htole32(16 | masks);
1262 dma->srcr[srci].l = htole32(8 | masks);
1263 dma->dstr[dsti].l = htole32(4 | masks);
1264 dma->resr[resi].l = htole32(4 | masks);
1266 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1267 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1269 for (r = 10000; r >= 0; r--) {
1271 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1272 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1273 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
1275 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1276 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1279 device_printf(sc->sc_dev, "writeramaddr -- "
1280 "result[%d](addr %d) still valid\n", resi, addr);
1286 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1287 HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
1288 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
1294 hifn_readramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
1296 struct hifn_dma *dma = sc->sc_dma;
1297 hifn_base_command_t rc;
1298 const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
1299 int r, cmdi, srci, dsti, resi;
1301 rc.masks = htole16(2 << 13);
1302 rc.session_num = htole16(addr >> 14);
1303 rc.total_source_count = htole16(addr & 0x3fff);
1304 rc.total_dest_count = htole16(8);
1306 hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
1308 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1309 HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
1310 HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
1312 bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
1313 *(hifn_base_command_t *)dma->command_bufs[cmdi] = rc;
1315 dma->srcr[srci].p = htole32(sc->sc_dma_physaddr +
1316 offsetof(struct hifn_dma, test_src));
1318 dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr +
1319 offsetof(struct hifn_dma, test_dst));
1321 dma->cmdr[cmdi].l = htole32(8 | masks);
1322 dma->srcr[srci].l = htole32(8 | masks);
1323 dma->dstr[dsti].l = htole32(8 | masks);
1324 dma->resr[resi].l = htole32(HIFN_MAX_RESULT | masks);
1326 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1327 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1329 for (r = 10000; r >= 0; r--) {
1331 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1332 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1333 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
1335 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1336 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1339 device_printf(sc->sc_dev, "readramaddr -- "
1340 "result[%d](addr %d) still valid\n", resi, addr);
1344 bcopy(&dma->test_dst, data, sizeof(dma->test_dst));
1347 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1348 HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
1349 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
1355 * Initialize the descriptor rings.
1358 hifn_init_dma(struct hifn_softc *sc)
1360 struct hifn_dma *dma = sc->sc_dma;
1365 /* initialize static pointer values */
1366 for (i = 0; i < HIFN_D_CMD_RSIZE; i++)
1367 dma->cmdr[i].p = htole32(sc->sc_dma_physaddr +
1368 offsetof(struct hifn_dma, command_bufs[i][0]));
1369 for (i = 0; i < HIFN_D_RES_RSIZE; i++)
1370 dma->resr[i].p = htole32(sc->sc_dma_physaddr +
1371 offsetof(struct hifn_dma, result_bufs[i][0]));
1373 dma->cmdr[HIFN_D_CMD_RSIZE].p =
1374 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, cmdr[0]));
1375 dma->srcr[HIFN_D_SRC_RSIZE].p =
1376 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, srcr[0]));
1377 dma->dstr[HIFN_D_DST_RSIZE].p =
1378 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, dstr[0]));
1379 dma->resr[HIFN_D_RES_RSIZE].p =
1380 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, resr[0]));
1382 dma->cmdu = dma->srcu = dma->dstu = dma->resu = 0;
1383 dma->cmdi = dma->srci = dma->dsti = dma->resi = 0;
1384 dma->cmdk = dma->srck = dma->dstk = dma->resk = 0;
1388 * Writes out the raw command buffer space. Returns the
1389 * command buffer size.
1392 hifn_write_command(struct hifn_command *cmd, u_int8_t *buf)
1394 #define MIN(a,b) ((a)<(b)?(a):(b))
1396 hifn_base_command_t *base_cmd;
1397 hifn_mac_command_t *mac_cmd;
1398 hifn_crypt_command_t *cry_cmd;
1399 int using_mac, using_crypt, len;
1400 u_int32_t dlen, slen;
1403 using_mac = cmd->base_masks & HIFN_BASE_CMD_MAC;
1404 using_crypt = cmd->base_masks & HIFN_BASE_CMD_CRYPT;
1406 base_cmd = (hifn_base_command_t *)buf_pos;
1407 base_cmd->masks = htole16(cmd->base_masks);
1408 slen = cmd->src_mapsize;
1410 dlen = cmd->dst_mapsize - cmd->sloplen + sizeof(u_int32_t);
1412 dlen = cmd->dst_mapsize;
1413 base_cmd->total_source_count = htole16(slen & HIFN_BASE_CMD_LENMASK_LO);
1414 base_cmd->total_dest_count = htole16(dlen & HIFN_BASE_CMD_LENMASK_LO);
1417 base_cmd->session_num = htole16(cmd->session_num |
1418 ((slen << HIFN_BASE_CMD_SRCLEN_S) & HIFN_BASE_CMD_SRCLEN_M) |
1419 ((dlen << HIFN_BASE_CMD_DSTLEN_S) & HIFN_BASE_CMD_DSTLEN_M));
1420 buf_pos += sizeof(hifn_base_command_t);
1423 mac_cmd = (hifn_mac_command_t *)buf_pos;
1424 dlen = cmd->maccrd->crd_len;
1425 mac_cmd->source_count = htole16(dlen & 0xffff);
1427 mac_cmd->masks = htole16(cmd->mac_masks |
1428 ((dlen << HIFN_MAC_CMD_SRCLEN_S) & HIFN_MAC_CMD_SRCLEN_M));
1429 mac_cmd->header_skip = htole16(cmd->maccrd->crd_skip);
1430 mac_cmd->reserved = 0;
1431 buf_pos += sizeof(hifn_mac_command_t);
1435 cry_cmd = (hifn_crypt_command_t *)buf_pos;
1436 dlen = cmd->enccrd->crd_len;
1437 cry_cmd->source_count = htole16(dlen & 0xffff);
1439 cry_cmd->masks = htole16(cmd->cry_masks |
1440 ((dlen << HIFN_CRYPT_CMD_SRCLEN_S) & HIFN_CRYPT_CMD_SRCLEN_M));
1441 cry_cmd->header_skip = htole16(cmd->enccrd->crd_skip);
1442 cry_cmd->reserved = 0;
1443 buf_pos += sizeof(hifn_crypt_command_t);
1446 if (using_mac && cmd->mac_masks & HIFN_MAC_CMD_NEW_KEY) {
1447 bcopy(cmd->mac, buf_pos, HIFN_MAC_KEY_LENGTH);
1448 buf_pos += HIFN_MAC_KEY_LENGTH;
1451 if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_KEY) {
1452 switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
1453 case HIFN_CRYPT_CMD_ALG_3DES:
1454 bcopy(cmd->ck, buf_pos, HIFN_3DES_KEY_LENGTH);
1455 buf_pos += HIFN_3DES_KEY_LENGTH;
1457 case HIFN_CRYPT_CMD_ALG_DES:
1458 bcopy(cmd->ck, buf_pos, HIFN_DES_KEY_LENGTH);
1459 buf_pos += cmd->cklen;
1461 case HIFN_CRYPT_CMD_ALG_RC4:
1466 clen = MIN(cmd->cklen, len);
1467 bcopy(cmd->ck, buf_pos, clen);
1477 if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_IV) {
1478 bcopy(cmd->iv, buf_pos, HIFN_IV_LENGTH);
1479 buf_pos += HIFN_IV_LENGTH;
1482 if ((cmd->base_masks & (HIFN_BASE_CMD_MAC|HIFN_BASE_CMD_CRYPT)) == 0) {
1487 return (buf_pos - buf);
1492 hifn_dmamap_aligned(struct hifn_operand *op)
1496 for (i = 0; i < op->nsegs; i++) {
1497 if (op->segs[i].ds_addr & 3)
1499 if ((i != (op->nsegs - 1)) && (op->segs[i].ds_len & 3))
1506 hifn_dmamap_load_dst(struct hifn_softc *sc, struct hifn_command *cmd)
1508 struct hifn_dma *dma = sc->sc_dma;
1509 struct hifn_operand *dst = &cmd->dst;
1511 int idx, used = 0, i;
1514 for (i = 0; i < dst->nsegs - 1; i++) {
1515 dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
1516 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1517 HIFN_D_MASKDONEIRQ | dst->segs[i].ds_len);
1518 HIFN_DSTR_SYNC(sc, idx,
1519 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1522 if (++idx == HIFN_D_DST_RSIZE) {
1523 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1524 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1525 HIFN_DSTR_SYNC(sc, idx,
1526 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1531 if (cmd->sloplen == 0) {
1532 p = dst->segs[i].ds_addr;
1533 l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
1534 dst->segs[i].ds_len;
1536 p = sc->sc_dma_physaddr +
1537 offsetof(struct hifn_dma, slop[cmd->slopidx]);
1538 l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
1541 if ((dst->segs[i].ds_len - cmd->sloplen) != 0) {
1542 dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
1543 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1544 HIFN_D_MASKDONEIRQ |
1545 (dst->segs[i].ds_len - cmd->sloplen));
1546 HIFN_DSTR_SYNC(sc, idx,
1547 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1550 if (++idx == HIFN_D_DST_RSIZE) {
1551 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1552 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1553 HIFN_DSTR_SYNC(sc, idx,
1554 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1559 dma->dstr[idx].p = htole32(p);
1560 dma->dstr[idx].l = htole32(l);
1561 HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1564 if (++idx == HIFN_D_DST_RSIZE) {
1565 dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP |
1566 HIFN_D_MASKDONEIRQ);
1567 HIFN_DSTR_SYNC(sc, idx,
1568 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1578 hifn_dmamap_load_src(struct hifn_softc *sc, struct hifn_command *cmd)
1580 struct hifn_dma *dma = sc->sc_dma;
1581 struct hifn_operand *src = &cmd->src;
1586 for (i = 0; i < src->nsegs; i++) {
1587 if (i == src->nsegs - 1)
1590 dma->srcr[idx].p = htole32(src->segs[i].ds_addr);
1591 dma->srcr[idx].l = htole32(src->segs[i].ds_len |
1592 HIFN_D_VALID | HIFN_D_MASKDONEIRQ | last);
1593 HIFN_SRCR_SYNC(sc, idx,
1594 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1596 if (++idx == HIFN_D_SRC_RSIZE) {
1597 dma->srcr[idx].l = htole32(HIFN_D_VALID |
1598 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1599 HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
1600 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1605 dma->srcu += src->nsegs;
1610 hifn_op_cb(void* arg, bus_dma_segment_t *seg, int nsegs, bus_size_t mapsize, int error)
1612 struct hifn_operand *op = arg;
1614 KASSERT(nsegs <= MAX_SCATTER,
1615 ("hifn_op_cb: too many DMA segments (%u > %u) "
1616 "returned when mapping operand", nsegs, MAX_SCATTER));
1617 op->mapsize = mapsize;
1619 bcopy(seg, op->segs, nsegs * sizeof (seg[0]));
1624 struct hifn_softc *sc,
1625 struct hifn_command *cmd,
1626 struct cryptop *crp,
1629 struct hifn_dma *dma = sc->sc_dma;
1631 int cmdi, resi, err = 0;
1634 * need 1 cmd, and 1 res
1636 * NB: check this first since it's easy.
1638 if ((dma->cmdu + 1) > HIFN_D_CMD_RSIZE ||
1639 (dma->resu + 1) > HIFN_D_RES_RSIZE) {
1642 device_printf(sc->sc_dev,
1643 "cmd/result exhaustion, cmdu %u resu %u\n",
1644 dma->cmdu, dma->resu);
1647 hifnstats.hst_nomem_cr++;
1651 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &cmd->src_map)) {
1652 hifnstats.hst_nomem_map++;
1656 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1657 if (bus_dmamap_load_mbuf(sc->sc_dmat, cmd->src_map,
1658 cmd->src_m, hifn_op_cb, &cmd->src, BUS_DMA_NOWAIT)) {
1659 hifnstats.hst_nomem_load++;
1663 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1664 if (bus_dmamap_load_uio(sc->sc_dmat, cmd->src_map,
1665 cmd->src_io, hifn_op_cb, &cmd->src, BUS_DMA_NOWAIT)) {
1666 hifnstats.hst_nomem_load++;
1675 if (hifn_dmamap_aligned(&cmd->src)) {
1676 cmd->sloplen = cmd->src_mapsize & 3;
1677 cmd->dst = cmd->src;
1679 if (crp->crp_flags & CRYPTO_F_IOV) {
1682 } else if (crp->crp_flags & CRYPTO_F_IMBUF) {
1684 struct mbuf *m, *m0, *mlast;
1686 KASSERT(cmd->dst_m == cmd->src_m,
1687 ("hifn_crypto: dst_m initialized improperly"));
1688 hifnstats.hst_unaligned++;
1690 * Source is not aligned on a longword boundary.
1691 * Copy the data to insure alignment. If we fail
1692 * to allocate mbufs or clusters while doing this
1693 * we return ERESTART so the operation is requeued
1694 * at the crypto later, but only if there are
1695 * ops already posted to the hardware; otherwise we
1696 * have no guarantee that we'll be re-entered.
1698 totlen = cmd->src_mapsize;
1699 if (cmd->src_m->m_flags & M_PKTHDR) {
1701 MGETHDR(m0, M_DONTWAIT, MT_DATA);
1702 if (m0 && !m_dup_pkthdr(m0, cmd->src_m, M_DONTWAIT)) {
1708 MGET(m0, M_DONTWAIT, MT_DATA);
1711 hifnstats.hst_nomem_mbuf++;
1712 err = dma->cmdu ? ERESTART : ENOMEM;
1715 if (totlen >= MINCLSIZE) {
1716 MCLGET(m0, M_DONTWAIT);
1717 if ((m0->m_flags & M_EXT) == 0) {
1718 hifnstats.hst_nomem_mcl++;
1719 err = dma->cmdu ? ERESTART : ENOMEM;
1726 m0->m_pkthdr.len = m0->m_len = len;
1729 while (totlen > 0) {
1730 MGET(m, M_DONTWAIT, MT_DATA);
1732 hifnstats.hst_nomem_mbuf++;
1733 err = dma->cmdu ? ERESTART : ENOMEM;
1738 if (totlen >= MINCLSIZE) {
1739 MCLGET(m, M_DONTWAIT);
1740 if ((m->m_flags & M_EXT) == 0) {
1741 hifnstats.hst_nomem_mcl++;
1742 err = dma->cmdu ? ERESTART : ENOMEM;
1751 m0->m_pkthdr.len += len;
1761 if (cmd->dst_map == NULL) {
1762 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &cmd->dst_map)) {
1763 hifnstats.hst_nomem_map++;
1767 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1768 if (bus_dmamap_load_mbuf(sc->sc_dmat, cmd->dst_map,
1769 cmd->dst_m, hifn_op_cb, &cmd->dst, BUS_DMA_NOWAIT)) {
1770 hifnstats.hst_nomem_map++;
1774 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1775 if (bus_dmamap_load_uio(sc->sc_dmat, cmd->dst_map,
1776 cmd->dst_io, hifn_op_cb, &cmd->dst, BUS_DMA_NOWAIT)) {
1777 hifnstats.hst_nomem_load++;
1786 device_printf(sc->sc_dev,
1787 "Entering cmd: stat %8x ien %8x u %d/%d/%d/%d n %d/%d\n",
1788 READ_REG_1(sc, HIFN_1_DMA_CSR),
1789 READ_REG_1(sc, HIFN_1_DMA_IER),
1790 dma->cmdu, dma->srcu, dma->dstu, dma->resu,
1791 cmd->src_nsegs, cmd->dst_nsegs);
1795 if (cmd->src_map == cmd->dst_map) {
1796 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
1797 BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
1799 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
1800 BUS_DMASYNC_PREWRITE);
1801 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
1802 BUS_DMASYNC_PREREAD);
1806 * need N src, and N dst
1808 if ((dma->srcu + cmd->src_nsegs) > HIFN_D_SRC_RSIZE ||
1809 (dma->dstu + cmd->dst_nsegs + 1) > HIFN_D_DST_RSIZE) {
1812 device_printf(sc->sc_dev,
1813 "src/dst exhaustion, srcu %u+%u dstu %u+%u\n",
1814 dma->srcu, cmd->src_nsegs,
1815 dma->dstu, cmd->dst_nsegs);
1818 hifnstats.hst_nomem_sd++;
1823 if (dma->cmdi == HIFN_D_CMD_RSIZE) {
1825 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID |
1826 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1827 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
1828 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1831 cmdlen = hifn_write_command(cmd, dma->command_bufs[cmdi]);
1832 HIFN_CMD_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE);
1834 /* .p for command/result already set */
1835 dma->cmdr[cmdi].l = htole32(cmdlen | HIFN_D_VALID | HIFN_D_LAST |
1836 HIFN_D_MASKDONEIRQ);
1837 HIFN_CMDR_SYNC(sc, cmdi,
1838 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1840 if (sc->sc_c_busy == 0) {
1841 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA);
1846 * We don't worry about missing an interrupt (which a "command wait"
1847 * interrupt salvages us from), unless there is more than one command
1850 if (dma->cmdu > 1) {
1851 sc->sc_dmaier |= HIFN_DMAIER_C_WAIT;
1852 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
1855 hifnstats.hst_ipackets++;
1856 hifnstats.hst_ibytes += cmd->src_mapsize;
1858 hifn_dmamap_load_src(sc, cmd);
1859 if (sc->sc_s_busy == 0) {
1860 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA);
1865 * Unlike other descriptors, we don't mask done interrupt from
1866 * result descriptor.
1870 printf("load res\n");
1872 if (dma->resi == HIFN_D_RES_RSIZE) {
1874 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID |
1875 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1876 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
1877 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1880 KASSERT(dma->hifn_commands[resi] == NULL,
1881 ("hifn_crypto: command slot %u busy", resi));
1882 dma->hifn_commands[resi] = cmd;
1883 HIFN_RES_SYNC(sc, resi, BUS_DMASYNC_PREREAD);
1884 if ((hint & CRYPTO_HINT_MORE) && sc->sc_curbatch < hifn_maxbatch) {
1885 dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
1886 HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ);
1888 if (sc->sc_curbatch > hifnstats.hst_maxbatch)
1889 hifnstats.hst_maxbatch = sc->sc_curbatch;
1890 hifnstats.hst_totbatch++;
1892 dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
1893 HIFN_D_VALID | HIFN_D_LAST);
1894 sc->sc_curbatch = 0;
1896 HIFN_RESR_SYNC(sc, resi,
1897 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1899 if (sc->sc_r_busy == 0) {
1900 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA);
1905 cmd->slopidx = resi;
1907 hifn_dmamap_load_dst(sc, cmd);
1909 if (sc->sc_d_busy == 0) {
1910 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA);
1916 device_printf(sc->sc_dev, "command: stat %8x ier %8x\n",
1917 READ_REG_1(sc, HIFN_1_DMA_CSR),
1918 READ_REG_1(sc, HIFN_1_DMA_IER));
1923 KASSERT(err == 0, ("hifn_crypto: success with error %u", err));
1924 return (err); /* success */
1927 if (cmd->src_map != cmd->dst_map)
1928 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
1930 if (cmd->src_map != cmd->dst_map)
1931 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
1933 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1934 if (cmd->src_m != cmd->dst_m)
1935 m_freem(cmd->dst_m);
1937 bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
1939 bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
1944 hifn_tick(void* vsc)
1946 struct hifn_softc *sc = vsc;
1950 if (sc->sc_active == 0) {
1951 struct hifn_dma *dma = sc->sc_dma;
1954 if (dma->cmdu == 0 && sc->sc_c_busy) {
1956 r |= HIFN_DMACSR_C_CTRL_DIS;
1958 if (dma->srcu == 0 && sc->sc_s_busy) {
1960 r |= HIFN_DMACSR_S_CTRL_DIS;
1962 if (dma->dstu == 0 && sc->sc_d_busy) {
1964 r |= HIFN_DMACSR_D_CTRL_DIS;
1966 if (dma->resu == 0 && sc->sc_r_busy) {
1968 r |= HIFN_DMACSR_R_CTRL_DIS;
1971 WRITE_REG_1(sc, HIFN_1_DMA_CSR, r);
1975 callout_reset(&sc->sc_tickto, hz, hifn_tick, sc);
1979 hifn_intr(void *arg)
1981 struct hifn_softc *sc = arg;
1982 struct hifn_dma *dma;
1983 u_int32_t dmacsr, restart;
1988 dmacsr = READ_REG_1(sc, HIFN_1_DMA_CSR);
1992 device_printf(sc->sc_dev,
1993 "irq: stat %08x ien %08x damier %08x i %d/%d/%d/%d k %d/%d/%d/%d u %d/%d/%d/%d\n",
1994 dmacsr, READ_REG_1(sc, HIFN_1_DMA_IER), sc->sc_dmaier,
1995 dma->cmdi, dma->srci, dma->dsti, dma->resi,
1996 dma->cmdk, dma->srck, dma->dstk, dma->resk,
1997 dma->cmdu, dma->srcu, dma->dstu, dma->resu);
2001 /* Nothing in the DMA unit interrupted */
2002 if ((dmacsr & sc->sc_dmaier) == 0) {
2003 hifnstats.hst_noirq++;
2007 WRITE_REG_1(sc, HIFN_1_DMA_CSR, dmacsr & sc->sc_dmaier);
2009 if ((sc->sc_flags & HIFN_HAS_PUBLIC) &&
2010 (dmacsr & HIFN_DMACSR_PUBDONE))
2011 WRITE_REG_1(sc, HIFN_1_PUB_STATUS,
2012 READ_REG_1(sc, HIFN_1_PUB_STATUS) | HIFN_PUBSTS_DONE);
2014 restart = dmacsr & (HIFN_DMACSR_D_OVER | HIFN_DMACSR_R_OVER);
2016 device_printf(sc->sc_dev, "overrun %x\n", dmacsr);
2018 if (sc->sc_flags & HIFN_IS_7811) {
2019 if (dmacsr & HIFN_DMACSR_ILLR)
2020 device_printf(sc->sc_dev, "illegal read\n");
2021 if (dmacsr & HIFN_DMACSR_ILLW)
2022 device_printf(sc->sc_dev, "illegal write\n");
2025 restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
2026 HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
2028 device_printf(sc->sc_dev, "abort, resetting.\n");
2029 hifnstats.hst_abort++;
2034 if ((dmacsr & HIFN_DMACSR_C_WAIT) && (dma->cmdu == 0)) {
2036 * If no slots to process and we receive a "waiting on
2037 * command" interrupt, we disable the "waiting on command"
2040 sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
2041 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
2044 /* clear the rings */
2045 i = dma->resk; u = dma->resu;
2047 HIFN_RESR_SYNC(sc, i,
2048 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2049 if (dma->resr[i].l & htole32(HIFN_D_VALID)) {
2050 HIFN_RESR_SYNC(sc, i,
2051 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2055 if (i != HIFN_D_RES_RSIZE) {
2056 struct hifn_command *cmd;
2057 u_int8_t *macbuf = NULL;
2059 HIFN_RES_SYNC(sc, i, BUS_DMASYNC_POSTREAD);
2060 cmd = dma->hifn_commands[i];
2061 KASSERT(cmd != NULL,
2062 ("hifn_intr: null command slot %u", i));
2063 dma->hifn_commands[i] = NULL;
2065 if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
2066 macbuf = dma->result_bufs[i];
2070 hifn_callback(sc, cmd, macbuf);
2071 hifnstats.hst_opackets++;
2075 if (++i == (HIFN_D_RES_RSIZE + 1))
2078 dma->resk = i; dma->resu = u;
2080 i = dma->srck; u = dma->srcu;
2082 if (i == HIFN_D_SRC_RSIZE)
2084 HIFN_SRCR_SYNC(sc, i,
2085 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2086 if (dma->srcr[i].l & htole32(HIFN_D_VALID)) {
2087 HIFN_SRCR_SYNC(sc, i,
2088 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2093 dma->srck = i; dma->srcu = u;
2095 i = dma->cmdk; u = dma->cmdu;
2097 HIFN_CMDR_SYNC(sc, i,
2098 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2099 if (dma->cmdr[i].l & htole32(HIFN_D_VALID)) {
2100 HIFN_CMDR_SYNC(sc, i,
2101 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2104 if (i != HIFN_D_CMD_RSIZE) {
2106 HIFN_CMD_SYNC(sc, i, BUS_DMASYNC_POSTWRITE);
2108 if (++i == (HIFN_D_CMD_RSIZE + 1))
2111 dma->cmdk = i; dma->cmdu = u;
2113 if (sc->sc_needwakeup) { /* XXX check high watermark */
2114 int wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ);
2117 device_printf(sc->sc_dev,
2118 "wakeup crypto (%x) u %d/%d/%d/%d\n",
2120 dma->cmdu, dma->srcu, dma->dstu, dma->resu);
2122 sc->sc_needwakeup &= ~wakeup;
2123 crypto_unblock(sc->sc_cid, wakeup);
2128 * Allocate a new 'session' and return an encoded session id. 'sidp'
2129 * contains our registration id, and should contain an encoded session
2130 * id on successful allocation.
2133 hifn_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri)
2135 struct cryptoini *c;
2136 struct hifn_softc *sc = arg;
2137 int i, mac = 0, cry = 0;
2139 KASSERT(sc != NULL, ("hifn_newsession: null softc"));
2140 if (sidp == NULL || cri == NULL || sc == NULL)
2143 for (i = 0; i < sc->sc_maxses; i++)
2144 if (sc->sc_sessions[i].hs_state == HS_STATE_FREE)
2146 if (i == sc->sc_maxses)
2149 for (c = cri; c != NULL; c = c->cri_next) {
2150 switch (c->cri_alg) {
2153 case CRYPTO_MD5_HMAC:
2154 case CRYPTO_SHA1_HMAC:
2159 case CRYPTO_DES_CBC:
2160 case CRYPTO_3DES_CBC:
2161 /* XXX this may read fewer, does it matter? */
2162 read_random(sc->sc_sessions[i].hs_iv, HIFN_IV_LENGTH);
2173 if (mac == 0 && cry == 0)
2176 *sidp = HIFN_SID(device_get_unit(sc->sc_dev), i);
2177 sc->sc_sessions[i].hs_state = HS_STATE_USED;
2183 * Deallocate a session.
2184 * XXX this routine should run a zero'd mac/encrypt key into context ram.
2185 * XXX to blow away any keys already stored there.
2188 hifn_freesession(void *arg, u_int64_t tid)
2190 struct hifn_softc *sc = arg;
2192 u_int32_t sid = ((u_int32_t) tid) & 0xffffffff;
2194 KASSERT(sc != NULL, ("hifn_freesession: null softc"));
2198 session = HIFN_SESSION(sid);
2199 if (session >= sc->sc_maxses)
2202 bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session]));
2207 hifn_process(void *arg, struct cryptop *crp, int hint)
2209 struct hifn_softc *sc = arg;
2210 struct hifn_command *cmd = NULL;
2212 struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
2214 if (crp == NULL || crp->crp_callback == NULL) {
2215 hifnstats.hst_invalid++;
2218 session = HIFN_SESSION(crp->crp_sid);
2220 if (sc == NULL || session >= sc->sc_maxses) {
2225 cmd = malloc(sizeof(struct hifn_command), M_DEVBUF, M_NOWAIT | M_ZERO);
2227 hifnstats.hst_nomem++;
2232 if (crp->crp_flags & CRYPTO_F_IMBUF) {
2233 cmd->src_m = (struct mbuf *)crp->crp_buf;
2234 cmd->dst_m = (struct mbuf *)crp->crp_buf;
2235 } else if (crp->crp_flags & CRYPTO_F_IOV) {
2236 cmd->src_io = (struct uio *)crp->crp_buf;
2237 cmd->dst_io = (struct uio *)crp->crp_buf;
2240 goto errout; /* XXX we don't handle contiguous buffers! */
2243 crd1 = crp->crp_desc;
2248 crd2 = crd1->crd_next;
2251 if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
2252 crd1->crd_alg == CRYPTO_SHA1_HMAC ||
2253 crd1->crd_alg == CRYPTO_SHA1 ||
2254 crd1->crd_alg == CRYPTO_MD5) {
2257 } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
2258 crd1->crd_alg == CRYPTO_3DES_CBC ||
2259 crd1->crd_alg == CRYPTO_ARC4) {
2260 if ((crd1->crd_flags & CRD_F_ENCRYPT) == 0)
2261 cmd->base_masks |= HIFN_BASE_CMD_DECODE;
2269 if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
2270 crd1->crd_alg == CRYPTO_SHA1_HMAC ||
2271 crd1->crd_alg == CRYPTO_MD5 ||
2272 crd1->crd_alg == CRYPTO_SHA1) &&
2273 (crd2->crd_alg == CRYPTO_DES_CBC ||
2274 crd2->crd_alg == CRYPTO_3DES_CBC ||
2275 crd2->crd_alg == CRYPTO_ARC4) &&
2276 ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
2277 cmd->base_masks = HIFN_BASE_CMD_DECODE;
2280 } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
2281 crd1->crd_alg == CRYPTO_ARC4 ||
2282 crd1->crd_alg == CRYPTO_3DES_CBC) &&
2283 (crd2->crd_alg == CRYPTO_MD5_HMAC ||
2284 crd2->crd_alg == CRYPTO_SHA1_HMAC ||
2285 crd2->crd_alg == CRYPTO_MD5 ||
2286 crd2->crd_alg == CRYPTO_SHA1) &&
2287 (crd1->crd_flags & CRD_F_ENCRYPT)) {
2292 * We cannot order the 7751 as requested
2300 cmd->enccrd = enccrd;
2301 cmd->base_masks |= HIFN_BASE_CMD_CRYPT;
2302 switch (enccrd->crd_alg) {
2304 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_RC4;
2305 if ((enccrd->crd_flags & CRD_F_ENCRYPT)
2306 != sc->sc_sessions[session].hs_prev_op)
2307 sc->sc_sessions[session].hs_state =
2310 case CRYPTO_DES_CBC:
2311 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_DES |
2312 HIFN_CRYPT_CMD_MODE_CBC |
2313 HIFN_CRYPT_CMD_NEW_IV;
2315 case CRYPTO_3DES_CBC:
2316 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_3DES |
2317 HIFN_CRYPT_CMD_MODE_CBC |
2318 HIFN_CRYPT_CMD_NEW_IV;
2324 if (enccrd->crd_alg != CRYPTO_ARC4) {
2325 if (enccrd->crd_flags & CRD_F_ENCRYPT) {
2326 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
2327 bcopy(enccrd->crd_iv, cmd->iv,
2330 bcopy(sc->sc_sessions[session].hs_iv,
2331 cmd->iv, HIFN_IV_LENGTH);
2333 if ((enccrd->crd_flags & CRD_F_IV_PRESENT)
2335 if (crp->crp_flags & CRYPTO_F_IMBUF)
2336 m_copyback(cmd->src_m,
2338 HIFN_IV_LENGTH, cmd->iv);
2339 else if (crp->crp_flags & CRYPTO_F_IOV)
2340 cuio_copyback(cmd->src_io,
2342 HIFN_IV_LENGTH, cmd->iv);
2345 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
2346 bcopy(enccrd->crd_iv, cmd->iv,
2348 else if (crp->crp_flags & CRYPTO_F_IMBUF)
2349 m_copydata(cmd->src_m,
2351 HIFN_IV_LENGTH, cmd->iv);
2352 else if (crp->crp_flags & CRYPTO_F_IOV)
2353 cuio_copydata(cmd->src_io,
2355 HIFN_IV_LENGTH, cmd->iv);
2359 cmd->ck = enccrd->crd_key;
2360 cmd->cklen = enccrd->crd_klen >> 3;
2362 if (sc->sc_sessions[session].hs_state == HS_STATE_USED)
2363 cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
2367 cmd->maccrd = maccrd;
2368 cmd->base_masks |= HIFN_BASE_CMD_MAC;
2370 switch (maccrd->crd_alg) {
2372 cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
2373 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
2374 HIFN_MAC_CMD_POS_IPSEC;
2376 case CRYPTO_MD5_HMAC:
2377 cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
2378 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
2379 HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
2382 cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
2383 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
2384 HIFN_MAC_CMD_POS_IPSEC;
2386 case CRYPTO_SHA1_HMAC:
2387 cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
2388 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
2389 HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
2393 if ((maccrd->crd_alg == CRYPTO_SHA1_HMAC ||
2394 maccrd->crd_alg == CRYPTO_MD5_HMAC) &&
2395 sc->sc_sessions[session].hs_state == HS_STATE_USED) {
2396 cmd->mac_masks |= HIFN_MAC_CMD_NEW_KEY;
2397 bcopy(maccrd->crd_key, cmd->mac, maccrd->crd_klen >> 3);
2398 bzero(cmd->mac + (maccrd->crd_klen >> 3),
2399 HIFN_MAC_KEY_LENGTH - (maccrd->crd_klen >> 3));
2404 cmd->session_num = session;
2407 err = hifn_crypto(sc, cmd, crp, hint);
2410 sc->sc_sessions[session].hs_prev_op =
2411 enccrd->crd_flags & CRD_F_ENCRYPT;
2412 if (sc->sc_sessions[session].hs_state == HS_STATE_USED)
2413 sc->sc_sessions[session].hs_state = HS_STATE_KEY;
2415 } else if (err == ERESTART) {
2417 * There weren't enough resources to dispatch the request
2418 * to the part. Notify the caller so they'll requeue this
2419 * request and resubmit it again soon.
2423 device_printf(sc->sc_dev, "requeue request\n");
2425 free(cmd, M_DEVBUF);
2426 sc->sc_needwakeup |= CRYPTO_SYMQ;
2432 free(cmd, M_DEVBUF);
2434 hifnstats.hst_invalid++;
2436 hifnstats.hst_nomem++;
2437 crp->crp_etype = err;
2443 hifn_abort(struct hifn_softc *sc)
2445 struct hifn_dma *dma = sc->sc_dma;
2446 struct hifn_command *cmd;
2447 struct cryptop *crp;
2450 i = dma->resk; u = dma->resu;
2452 cmd = dma->hifn_commands[i];
2453 KASSERT(cmd != NULL, ("hifn_abort: null command slot %u", i));
2454 dma->hifn_commands[i] = NULL;
2457 if ((dma->resr[i].l & htole32(HIFN_D_VALID)) == 0) {
2458 /* Salvage what we can. */
2461 if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
2462 macbuf = dma->result_bufs[i];
2466 hifnstats.hst_opackets++;
2467 hifn_callback(sc, cmd, macbuf);
2469 if (cmd->src_map == cmd->dst_map) {
2470 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2471 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
2473 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2474 BUS_DMASYNC_POSTWRITE);
2475 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
2476 BUS_DMASYNC_POSTREAD);
2479 if (cmd->src_m != cmd->dst_m) {
2480 m_freem(cmd->src_m);
2481 crp->crp_buf = (caddr_t)cmd->dst_m;
2484 /* non-shared buffers cannot be restarted */
2485 if (cmd->src_map != cmd->dst_map) {
2487 * XXX should be EAGAIN, delayed until
2490 crp->crp_etype = ENOMEM;
2491 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
2492 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
2494 crp->crp_etype = ENOMEM;
2496 bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
2497 bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
2499 free(cmd, M_DEVBUF);
2500 if (crp->crp_etype != EAGAIN)
2504 if (++i == HIFN_D_RES_RSIZE)
2508 dma->resk = i; dma->resu = u;
2510 /* Force upload of key next time */
2511 for (i = 0; i < sc->sc_maxses; i++)
2512 if (sc->sc_sessions[i].hs_state == HS_STATE_KEY)
2513 sc->sc_sessions[i].hs_state = HS_STATE_USED;
2515 hifn_reset_board(sc, 1);
2517 hifn_init_pci_registers(sc);
2521 hifn_callback(struct hifn_softc *sc, struct hifn_command *cmd, u_int8_t *macbuf)
2523 struct hifn_dma *dma = sc->sc_dma;
2524 struct cryptop *crp = cmd->crp;
2525 struct cryptodesc *crd;
2529 if (cmd->src_map == cmd->dst_map) {
2530 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2531 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
2533 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2534 BUS_DMASYNC_POSTWRITE);
2535 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
2536 BUS_DMASYNC_POSTREAD);
2539 if (crp->crp_flags & CRYPTO_F_IMBUF) {
2540 if (cmd->src_m != cmd->dst_m) {
2541 crp->crp_buf = (caddr_t)cmd->dst_m;
2542 totlen = cmd->src_mapsize;
2543 for (m = cmd->dst_m; m != NULL; m = m->m_next) {
2544 if (totlen < m->m_len) {
2550 cmd->dst_m->m_pkthdr.len = cmd->src_m->m_pkthdr.len;
2551 m_freem(cmd->src_m);
2555 if (cmd->sloplen != 0) {
2556 if (crp->crp_flags & CRYPTO_F_IMBUF)
2557 m_copyback((struct mbuf *)crp->crp_buf,
2558 cmd->src_mapsize - cmd->sloplen,
2559 cmd->sloplen, (caddr_t)&dma->slop[cmd->slopidx]);
2560 else if (crp->crp_flags & CRYPTO_F_IOV)
2561 cuio_copyback((struct uio *)crp->crp_buf,
2562 cmd->src_mapsize - cmd->sloplen,
2563 cmd->sloplen, (caddr_t)&dma->slop[cmd->slopidx]);
2566 i = dma->dstk; u = dma->dstu;
2568 if (i == HIFN_D_DST_RSIZE)
2570 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
2571 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2572 if (dma->dstr[i].l & htole32(HIFN_D_VALID)) {
2573 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
2574 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2579 dma->dstk = i; dma->dstu = u;
2581 hifnstats.hst_obytes += cmd->dst_mapsize;
2583 if ((cmd->base_masks & (HIFN_BASE_CMD_CRYPT | HIFN_BASE_CMD_DECODE)) ==
2584 HIFN_BASE_CMD_CRYPT) {
2585 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
2586 if (crd->crd_alg != CRYPTO_DES_CBC &&
2587 crd->crd_alg != CRYPTO_3DES_CBC)
2589 if (crp->crp_flags & CRYPTO_F_IMBUF)
2590 m_copydata((struct mbuf *)crp->crp_buf,
2591 crd->crd_skip + crd->crd_len - HIFN_IV_LENGTH,
2593 cmd->softc->sc_sessions[cmd->session_num].hs_iv);
2594 else if (crp->crp_flags & CRYPTO_F_IOV) {
2595 cuio_copydata((struct uio *)crp->crp_buf,
2596 crd->crd_skip + crd->crd_len - HIFN_IV_LENGTH,
2598 cmd->softc->sc_sessions[cmd->session_num].hs_iv);
2604 if (macbuf != NULL) {
2605 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
2608 if (crd->crd_alg == CRYPTO_MD5)
2610 else if (crd->crd_alg == CRYPTO_SHA1)
2612 else if (crd->crd_alg == CRYPTO_MD5_HMAC ||
2613 crd->crd_alg == CRYPTO_SHA1_HMAC)
2618 if (crp->crp_flags & CRYPTO_F_IMBUF)
2619 m_copyback((struct mbuf *)crp->crp_buf,
2620 crd->crd_inject, len, macbuf);
2621 else if ((crp->crp_flags & CRYPTO_F_IOV) && crp->crp_mac)
2622 bcopy((caddr_t)macbuf, crp->crp_mac, len);
2627 if (cmd->src_map != cmd->dst_map) {
2628 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
2629 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
2631 bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
2632 bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
2633 free(cmd, M_DEVBUF);
2638 * 7811 PB3 rev/2 parts lock-up on burst writes to Group 0
2639 * and Group 1 registers; avoid conditions that could create
2640 * burst writes by doing a read in between the writes.
2642 * NB: The read we interpose is always to the same register;
2643 * we do this because reading from an arbitrary (e.g. last)
2644 * register may not always work.
2647 hifn_write_reg_0(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
2649 if (sc->sc_flags & HIFN_IS_7811) {
2650 if (sc->sc_bar0_lastreg == reg - 4)
2651 bus_space_read_4(sc->sc_st0, sc->sc_sh0, HIFN_0_PUCNFG);
2652 sc->sc_bar0_lastreg = reg;
2654 bus_space_write_4(sc->sc_st0, sc->sc_sh0, reg, val);
2658 hifn_write_reg_1(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
2660 if (sc->sc_flags & HIFN_IS_7811) {
2661 if (sc->sc_bar1_lastreg == reg - 4)
2662 bus_space_read_4(sc->sc_st1, sc->sc_sh1, HIFN_1_REVID);
2663 sc->sc_bar1_lastreg = reg;
2665 bus_space_write_4(sc->sc_st1, sc->sc_sh1, reg, val);