1 /* $OpenBSD: hifn7751.c,v 1.120 2002/05/17 00:33:34 deraadt Exp $ */
2
3 /*-
4 * Invertex AEON / Hifn 7751 driver
5 * Copyright (c) 1999 Invertex Inc. All rights reserved.
6 * Copyright (c) 1999 Theo de Raadt
7 * Copyright (c) 2000-2001 Network Security Technologies, Inc.
8 * http://www.netsec.net
9 * Copyright (c) 2003 Hifn Inc.
10 *
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.
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
18 *
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.
26 *
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.
37 *
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.
41 */
42
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
45
46 /*
47 * Driver for various Hifn encryption processors.
48 */
49 #include "opt_hifn.h"
50
51 #include <sys/param.h>
52 #include <sys/systm.h>
53 #include <sys/proc.h>
54 #include <sys/errno.h>
55 #include <sys/malloc.h>
56 #include <sys/kernel.h>
57 #include <sys/module.h>
58 #include <sys/mbuf.h>
59 #include <sys/lock.h>
60 #include <sys/mutex.h>
61 #include <sys/sysctl.h>
62
63 #include <vm/vm.h>
64 #include <vm/pmap.h>
65
66 #include <machine/bus.h>
67 #include <machine/resource.h>
68 #include <sys/bus.h>
69 #include <sys/rman.h>
70
71 #include <opencrypto/cryptodev.h>
72 #include <sys/random.h>
73
74 #include <dev/pci/pcivar.h>
75 #include <dev/pci/pcireg.h>
76
77 #ifdef HIFN_RNDTEST
78 #include <dev/rndtest/rndtest.h>
79 #endif
80 #include <dev/hifn/hifn7751reg.h>
81 #include <dev/hifn/hifn7751var.h>
82
83 /*
84 * Prototypes and count for the pci_device structure
85 */
86 static int hifn_probe(device_t);
87 static int hifn_attach(device_t);
88 static int hifn_detach(device_t);
89 static int hifn_suspend(device_t);
90 static int hifn_resume(device_t);
91 static void hifn_shutdown(device_t);
92
93 static device_method_t hifn_methods[] = {
94 /* Device interface */
95 DEVMETHOD(device_probe, hifn_probe),
96 DEVMETHOD(device_attach, hifn_attach),
97 DEVMETHOD(device_detach, hifn_detach),
98 DEVMETHOD(device_suspend, hifn_suspend),
99 DEVMETHOD(device_resume, hifn_resume),
100 DEVMETHOD(device_shutdown, hifn_shutdown),
101
102 /* bus interface */
103 DEVMETHOD(bus_print_child, bus_generic_print_child),
104 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
105
106 { 0, 0 }
107 };
108 static driver_t hifn_driver = {
109 "hifn",
110 hifn_methods,
111 sizeof (struct hifn_softc)
112 };
113 static devclass_t hifn_devclass;
114
115 DRIVER_MODULE(hifn, pci, hifn_driver, hifn_devclass, 0, 0);
116 MODULE_DEPEND(hifn, crypto, 1, 1, 1);
117 #ifdef HIFN_RNDTEST
118 MODULE_DEPEND(hifn, rndtest, 1, 1, 1);
119 #endif
120
121 static void hifn_reset_board(struct hifn_softc *, int);
122 static void hifn_reset_puc(struct hifn_softc *);
123 static void hifn_puc_wait(struct hifn_softc *);
124 static int hifn_enable_crypto(struct hifn_softc *);
125 static void hifn_set_retry(struct hifn_softc *sc);
126 static void hifn_init_dma(struct hifn_softc *);
127 static void hifn_init_pci_registers(struct hifn_softc *);
128 static int hifn_sramsize(struct hifn_softc *);
129 static int hifn_dramsize(struct hifn_softc *);
130 static int hifn_ramtype(struct hifn_softc *);
131 static void hifn_sessions(struct hifn_softc *);
132 static void hifn_intr(void *);
133 static u_int hifn_write_command(struct hifn_command *, u_int8_t *);
134 static u_int32_t hifn_next_signature(u_int32_t a, u_int cnt);
135 static int hifn_newsession(void *, u_int32_t *, struct cryptoini *);
136 static int hifn_freesession(void *, u_int64_t);
137 static int hifn_process(void *, struct cryptop *, int);
138 static void hifn_callback(struct hifn_softc *, struct hifn_command *, u_int8_t *);
139 static int hifn_crypto(struct hifn_softc *, struct hifn_command *, struct cryptop *, int);
140 static int hifn_readramaddr(struct hifn_softc *, int, u_int8_t *);
141 static int hifn_writeramaddr(struct hifn_softc *, int, u_int8_t *);
142 static int hifn_dmamap_load_src(struct hifn_softc *, struct hifn_command *);
143 static int hifn_dmamap_load_dst(struct hifn_softc *, struct hifn_command *);
144 static int hifn_init_pubrng(struct hifn_softc *);
145 static void hifn_rng(void *);
146 static void hifn_tick(void *);
147 static void hifn_abort(struct hifn_softc *);
148 static void hifn_alloc_slot(struct hifn_softc *, int *, int *, int *, int *);
149
150 static void hifn_write_reg_0(struct hifn_softc *, bus_size_t, u_int32_t);
151 static void hifn_write_reg_1(struct hifn_softc *, bus_size_t, u_int32_t);
152
153 static __inline u_int32_t
154 READ_REG_0(struct hifn_softc *sc, bus_size_t reg)
155 {
156 u_int32_t v = bus_space_read_4(sc->sc_st0, sc->sc_sh0, reg);
157 sc->sc_bar0_lastreg = (bus_size_t) -1;
158 return (v);
159 }
160 #define WRITE_REG_0(sc, reg, val) hifn_write_reg_0(sc, reg, val)
161
162 static __inline u_int32_t
163 READ_REG_1(struct hifn_softc *sc, bus_size_t reg)
164 {
165 u_int32_t v = bus_space_read_4(sc->sc_st1, sc->sc_sh1, reg);
166 sc->sc_bar1_lastreg = (bus_size_t) -1;
167 return (v);
168 }
169 #define WRITE_REG_1(sc, reg, val) hifn_write_reg_1(sc, reg, val)
170
171 SYSCTL_NODE(_hw, OID_AUTO, hifn, CTLFLAG_RD, 0, "Hifn driver parameters");
172
173 #ifdef HIFN_DEBUG
174 static int hifn_debug = 0;
175 SYSCTL_INT(_hw_hifn, OID_AUTO, debug, CTLFLAG_RW, &hifn_debug,
176 0, "control debugging msgs");
177 #endif
178
179 static struct hifn_stats hifnstats;
180 SYSCTL_STRUCT(_hw_hifn, OID_AUTO, stats, CTLFLAG_RD, &hifnstats,
181 hifn_stats, "driver statistics");
182 static int hifn_maxbatch = 1;
183 SYSCTL_INT(_hw_hifn, OID_AUTO, maxbatch, CTLFLAG_RW, &hifn_maxbatch,
184 0, "max ops to batch w/o interrupt");
185
186 /*
187 * Probe for a supported device. The PCI vendor and device
188 * IDs are used to detect devices we know how to handle.
189 */
190 static int
191 hifn_probe(device_t dev)
192 {
193 if (pci_get_vendor(dev) == PCI_VENDOR_INVERTEX &&
194 pci_get_device(dev) == PCI_PRODUCT_INVERTEX_AEON)
195 return (BUS_PROBE_DEFAULT);
196 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
197 (pci_get_device(dev) == PCI_PRODUCT_HIFN_7751 ||
198 pci_get_device(dev) == PCI_PRODUCT_HIFN_7951 ||
199 pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
200 pci_get_device(dev) == PCI_PRODUCT_HIFN_7956 ||
201 pci_get_device(dev) == PCI_PRODUCT_HIFN_7811))
202 return (BUS_PROBE_DEFAULT);
203 if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
204 pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751)
205 return (BUS_PROBE_DEFAULT);
206 return (ENXIO);
207 }
208
209 static void
210 hifn_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
211 {
212 bus_addr_t *paddr = (bus_addr_t*) arg;
213 *paddr = segs->ds_addr;
214 }
215
216 static const char*
217 hifn_partname(struct hifn_softc *sc)
218 {
219 /* XXX sprintf numbers when not decoded */
220 switch (pci_get_vendor(sc->sc_dev)) {
221 case PCI_VENDOR_HIFN:
222 switch (pci_get_device(sc->sc_dev)) {
223 case PCI_PRODUCT_HIFN_6500: return "Hifn 6500";
224 case PCI_PRODUCT_HIFN_7751: return "Hifn 7751";
225 case PCI_PRODUCT_HIFN_7811: return "Hifn 7811";
226 case PCI_PRODUCT_HIFN_7951: return "Hifn 7951";
227 case PCI_PRODUCT_HIFN_7955: return "Hifn 7955";
228 case PCI_PRODUCT_HIFN_7956: return "Hifn 7956";
229 }
230 return "Hifn unknown-part";
231 case PCI_VENDOR_INVERTEX:
232 switch (pci_get_device(sc->sc_dev)) {
233 case PCI_PRODUCT_INVERTEX_AEON: return "Invertex AEON";
234 }
235 return "Invertex unknown-part";
236 case PCI_VENDOR_NETSEC:
237 switch (pci_get_device(sc->sc_dev)) {
238 case PCI_PRODUCT_NETSEC_7751: return "NetSec 7751";
239 }
240 return "NetSec unknown-part";
241 }
242 return "Unknown-vendor unknown-part";
243 }
244
245 static void
246 default_harvest(struct rndtest_state *rsp, void *buf, u_int count)
247 {
248 random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE);
249 }
250
251 static u_int
252 checkmaxmin(device_t dev, const char *what, u_int v, u_int min, u_int max)
253 {
254 if (v > max) {
255 device_printf(dev, "Warning, %s %u out of range, "
256 "using max %u\n", what, v, max);
257 v = max;
258 } else if (v < min) {
259 device_printf(dev, "Warning, %s %u out of range, "
260 "using min %u\n", what, v, min);
261 v = min;
262 }
263 return v;
264 }
265
266 /*
267 * Select PLL configuration for 795x parts. This is complicated in
268 * that we cannot determine the optimal parameters without user input.
269 * The reference clock is derived from an external clock through a
270 * multiplier. The external clock is either the host bus (i.e. PCI)
271 * or an external clock generator. When using the PCI bus we assume
272 * the clock is either 33 or 66 MHz; for an external source we cannot
273 * tell the speed.
274 *
275 * PLL configuration is done with a string: "pci" for PCI bus, or "ext"
276 * for an external source, followed by the frequency. We calculate
277 * the appropriate multiplier and PLL register contents accordingly.
278 * When no configuration is given we default to "pci66" since that
279 * always will allow the card to work. If a card is using the PCI
280 * bus clock and in a 33MHz slot then it will be operating at half
281 * speed until the correct information is provided.
282 */
283 static void
284 hifn_getpllconfig(device_t dev, u_int *pll)
285 {
286 const char *pllspec;
287 u_int freq, mul, fl, fh;
288 u_int32_t pllconfig;
289 char *nxt;
290
291 if (resource_string_value("hifn", device_get_unit(dev),
292 "pllconfig", &pllspec))
293 pllspec = "pci66";
294 fl = 33, fh = 66;
295 pllconfig = 0;
296 if (strncmp(pllspec, "ext", 3) == 0) {
297 pllspec += 3;
298 pllconfig |= HIFN_PLL_REF_SEL;
299 switch (pci_get_device(dev)) {
300 case PCI_PRODUCT_HIFN_7955:
301 case PCI_PRODUCT_HIFN_7956:
302 fl = 20, fh = 100;
303 break;
304 #ifdef notyet
305 case PCI_PRODUCT_HIFN_7954:
306 fl = 20, fh = 66;
307 break;
308 #endif
309 }
310 } else if (strncmp(pllspec, "pci", 3) == 0)
311 pllspec += 3;
312 freq = strtoul(pllspec, &nxt, 10);
313 if (nxt == pllspec)
314 freq = 66;
315 else
316 freq = checkmaxmin(dev, "frequency", freq, fl, fh);
317 /*
318 * Calculate multiplier. We target a Fck of 266 MHz,
319 * allowing only even values, possibly rounded down.
320 * Multipliers > 8 must set the charge pump current.
321 */
322 mul = checkmaxmin(dev, "PLL divisor", (266 / freq) &~ 1, 2, 12);
323 pllconfig |= (mul / 2 - 1) << HIFN_PLL_ND_SHIFT;
324 if (mul > 8)
325 pllconfig |= HIFN_PLL_IS;
326 *pll = pllconfig;
327 }
328
329 /*
330 * Attach an interface that successfully probed.
331 */
332 static int
333 hifn_attach(device_t dev)
334 {
335 struct hifn_softc *sc = device_get_softc(dev);
336 u_int32_t cmd;
337 caddr_t kva;
338 int rseg, rid;
339 char rbase;
340 u_int16_t ena, rev;
341
342 KASSERT(sc != NULL, ("hifn_attach: null software carrier!"));
343 bzero(sc, sizeof (*sc));
344 sc->sc_dev = dev;
345
346 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), "hifn driver", MTX_DEF);
347
348 /* XXX handle power management */
349
350 /*
351 * The 7951 and 795x have a random number generator and
352 * public key support; note this.
353 */
354 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
355 (pci_get_device(dev) == PCI_PRODUCT_HIFN_7951 ||
356 pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
357 pci_get_device(dev) == PCI_PRODUCT_HIFN_7956))
358 sc->sc_flags = HIFN_HAS_RNG | HIFN_HAS_PUBLIC;
359 /*
360 * The 7811 has a random number generator and
361 * we also note it's identity 'cuz of some quirks.
362 */
363 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
364 pci_get_device(dev) == PCI_PRODUCT_HIFN_7811)
365 sc->sc_flags |= HIFN_IS_7811 | HIFN_HAS_RNG;
366
367 /*
368 * The 795x parts support AES.
369 */
370 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
371 (pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
372 pci_get_device(dev) == PCI_PRODUCT_HIFN_7956)) {
373 sc->sc_flags |= HIFN_IS_7956 | HIFN_HAS_AES;
374 /*
375 * Select PLL configuration. This depends on the
376 * bus and board design and must be manually configured
377 * if the default setting is unacceptable.
378 */
379 hifn_getpllconfig(dev, &sc->sc_pllconfig);
380 }
381
382 /*
383 * Configure support for memory-mapped access to
384 * registers and for DMA operations.
385 */
386 #define PCIM_ENA (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN)
387 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
388 cmd |= PCIM_ENA;
389 pci_write_config(dev, PCIR_COMMAND, cmd, 4);
390 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
391 if ((cmd & PCIM_ENA) != PCIM_ENA) {
392 device_printf(dev, "failed to enable %s\n",
393 (cmd & PCIM_ENA) == 0 ?
394 "memory mapping & bus mastering" :
395 (cmd & PCIM_CMD_MEMEN) == 0 ?
396 "memory mapping" : "bus mastering");
397 goto fail_pci;
398 }
399 #undef PCIM_ENA
400
401 /*
402 * Setup PCI resources. Note that we record the bus
403 * tag and handle for each register mapping, this is
404 * used by the READ_REG_0, WRITE_REG_0, READ_REG_1,
405 * and WRITE_REG_1 macros throughout the driver.
406 */
407 rid = HIFN_BAR0;
408 sc->sc_bar0res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
409 RF_ACTIVE);
410 if (sc->sc_bar0res == NULL) {
411 device_printf(dev, "cannot map bar%d register space\n", 0);
412 goto fail_pci;
413 }
414 sc->sc_st0 = rman_get_bustag(sc->sc_bar0res);
415 sc->sc_sh0 = rman_get_bushandle(sc->sc_bar0res);
416 sc->sc_bar0_lastreg = (bus_size_t) -1;
417
418 rid = HIFN_BAR1;
419 sc->sc_bar1res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
420 RF_ACTIVE);
421 if (sc->sc_bar1res == NULL) {
422 device_printf(dev, "cannot map bar%d register space\n", 1);
423 goto fail_io0;
424 }
425 sc->sc_st1 = rman_get_bustag(sc->sc_bar1res);
426 sc->sc_sh1 = rman_get_bushandle(sc->sc_bar1res);
427 sc->sc_bar1_lastreg = (bus_size_t) -1;
428
429 hifn_set_retry(sc);
430
431 /*
432 * Setup the area where the Hifn DMA's descriptors
433 * and associated data structures.
434 */
435 if (bus_dma_tag_create(NULL, /* parent */
436 1, 0, /* alignment,boundary */
437 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
438 BUS_SPACE_MAXADDR, /* highaddr */
439 NULL, NULL, /* filter, filterarg */
440 HIFN_MAX_DMALEN, /* maxsize */
441 MAX_SCATTER, /* nsegments */
442 HIFN_MAX_SEGLEN, /* maxsegsize */
443 BUS_DMA_ALLOCNOW, /* flags */
444 NULL, /* lockfunc */
445 NULL, /* lockarg */
446 &sc->sc_dmat)) {
447 device_printf(dev, "cannot allocate DMA tag\n");
448 goto fail_io1;
449 }
450 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &sc->sc_dmamap)) {
451 device_printf(dev, "cannot create dma map\n");
452 bus_dma_tag_destroy(sc->sc_dmat);
453 goto fail_io1;
454 }
455 if (bus_dmamem_alloc(sc->sc_dmat, (void**) &kva, BUS_DMA_NOWAIT, &sc->sc_dmamap)) {
456 device_printf(dev, "cannot alloc dma buffer\n");
457 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
458 bus_dma_tag_destroy(sc->sc_dmat);
459 goto fail_io1;
460 }
461 if (bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, kva,
462 sizeof (*sc->sc_dma),
463 hifn_dmamap_cb, &sc->sc_dma_physaddr,
464 BUS_DMA_NOWAIT)) {
465 device_printf(dev, "cannot load dma map\n");
466 bus_dmamem_free(sc->sc_dmat, kva, sc->sc_dmamap);
467 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
468 bus_dma_tag_destroy(sc->sc_dmat);
469 goto fail_io1;
470 }
471 sc->sc_dma = (struct hifn_dma *)kva;
472 bzero(sc->sc_dma, sizeof(*sc->sc_dma));
473
474 KASSERT(sc->sc_st0 != 0, ("hifn_attach: null bar0 tag!"));
475 KASSERT(sc->sc_sh0 != 0, ("hifn_attach: null bar0 handle!"));
476 KASSERT(sc->sc_st1 != 0, ("hifn_attach: null bar1 tag!"));
477 KASSERT(sc->sc_sh1 != 0, ("hifn_attach: null bar1 handle!"));
478
479 /*
480 * Reset the board and do the ``secret handshake''
481 * to enable the crypto support. Then complete the
482 * initialization procedure by setting up the interrupt
483 * and hooking in to the system crypto support so we'll
484 * get used for system services like the crypto device,
485 * IPsec, RNG device, etc.
486 */
487 hifn_reset_board(sc, 0);
488
489 if (hifn_enable_crypto(sc) != 0) {
490 device_printf(dev, "crypto enabling failed\n");
491 goto fail_mem;
492 }
493 hifn_reset_puc(sc);
494
495 hifn_init_dma(sc);
496 hifn_init_pci_registers(sc);
497
498 /* XXX can't dynamically determine ram type for 795x; force dram */
499 if (sc->sc_flags & HIFN_IS_7956)
500 sc->sc_drammodel = 1;
501 else if (hifn_ramtype(sc))
502 goto fail_mem;
503
504 if (sc->sc_drammodel == 0)
505 hifn_sramsize(sc);
506 else
507 hifn_dramsize(sc);
508
509 /*
510 * Workaround for NetSec 7751 rev A: half ram size because two
511 * of the address lines were left floating
512 */
513 if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
514 pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751 &&
515 pci_get_revid(dev) == 0x61) /*XXX???*/
516 sc->sc_ramsize >>= 1;
517
518 /*
519 * Arrange the interrupt line.
520 */
521 rid = 0;
522 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
523 RF_SHAREABLE|RF_ACTIVE);
524 if (sc->sc_irq == NULL) {
525 device_printf(dev, "could not map interrupt\n");
526 goto fail_mem;
527 }
528 /*
529 * NB: Network code assumes we are blocked with splimp()
530 * so make sure the IRQ is marked appropriately.
531 */
532 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_NET | INTR_MPSAFE,
533 hifn_intr, sc, &sc->sc_intrhand)) {
534 device_printf(dev, "could not setup interrupt\n");
535 goto fail_intr2;
536 }
537
538 hifn_sessions(sc);
539
540 /*
541 * NB: Keep only the low 16 bits; this masks the chip id
542 * from the 7951.
543 */
544 rev = READ_REG_1(sc, HIFN_1_REVID) & 0xffff;
545
546 rseg = sc->sc_ramsize / 1024;
547 rbase = 'K';
548 if (sc->sc_ramsize >= (1024 * 1024)) {
549 rbase = 'M';
550 rseg /= 1024;
551 }
552 device_printf(sc->sc_dev, "%s, rev %u, %d%cB %cram",
553 hifn_partname(sc), rev,
554 rseg, rbase, sc->sc_drammodel ? 'd' : 's');
555 if (sc->sc_flags & HIFN_IS_7956)
556 printf(", pll=0x%x<%s clk, %ux mult>",
557 sc->sc_pllconfig,
558 sc->sc_pllconfig & HIFN_PLL_REF_SEL ? "ext" : "pci",
559 2 + 2*((sc->sc_pllconfig & HIFN_PLL_ND) >> 11));
560 printf("\n");
561
562 sc->sc_cid = crypto_get_driverid(0);
563 if (sc->sc_cid < 0) {
564 device_printf(dev, "could not get crypto driver id\n");
565 goto fail_intr;
566 }
567
568 WRITE_REG_0(sc, HIFN_0_PUCNFG,
569 READ_REG_0(sc, HIFN_0_PUCNFG) | HIFN_PUCNFG_CHIPID);
570 ena = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
571
572 switch (ena) {
573 case HIFN_PUSTAT_ENA_2:
574 crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0,
575 hifn_newsession, hifn_freesession, hifn_process, sc);
576 crypto_register(sc->sc_cid, CRYPTO_ARC4, 0, 0,
577 hifn_newsession, hifn_freesession, hifn_process, sc);
578 if (sc->sc_flags & HIFN_HAS_AES)
579 crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0,
580 hifn_newsession, hifn_freesession,
581 hifn_process, sc);
582 /*FALLTHROUGH*/
583 case HIFN_PUSTAT_ENA_1:
584 crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0,
585 hifn_newsession, hifn_freesession, hifn_process, sc);
586 crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0,
587 hifn_newsession, hifn_freesession, hifn_process, sc);
588 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0,
589 hifn_newsession, hifn_freesession, hifn_process, sc);
590 crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0,
591 hifn_newsession, hifn_freesession, hifn_process, sc);
592 crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0,
593 hifn_newsession, hifn_freesession, hifn_process, sc);
594 break;
595 }
596
597 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
598 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
599
600 if (sc->sc_flags & (HIFN_HAS_PUBLIC | HIFN_HAS_RNG))
601 hifn_init_pubrng(sc);
602
603 callout_init(&sc->sc_tickto, CALLOUT_MPSAFE);
604 callout_reset(&sc->sc_tickto, hz, hifn_tick, sc);
605
606 return (0);
607
608 fail_intr:
609 bus_teardown_intr(dev, sc->sc_irq, sc->sc_intrhand);
610 fail_intr2:
611 /* XXX don't store rid */
612 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
613 fail_mem:
614 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap);
615 bus_dmamem_free(sc->sc_dmat, sc->sc_dma, sc->sc_dmamap);
616 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
617 bus_dma_tag_destroy(sc->sc_dmat);
618
619 /* Turn off DMA polling */
620 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
621 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
622 fail_io1:
623 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR1, sc->sc_bar1res);
624 fail_io0:
625 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR0, sc->sc_bar0res);
626 fail_pci:
627 mtx_destroy(&sc->sc_mtx);
628 return (ENXIO);
629 }
630
631 /*
632 * Detach an interface that successfully probed.
633 */
634 static int
635 hifn_detach(device_t dev)
636 {
637 struct hifn_softc *sc = device_get_softc(dev);
638
639 KASSERT(sc != NULL, ("hifn_detach: null software carrier!"));
640
641 /* disable interrupts */
642 WRITE_REG_1(sc, HIFN_1_DMA_IER, 0);
643
644 /*XXX other resources */
645 callout_stop(&sc->sc_tickto);
646 callout_stop(&sc->sc_rngto);
647 #ifdef HIFN_RNDTEST
648 if (sc->sc_rndtest)
649 rndtest_detach(sc->sc_rndtest);
650 #endif
651
652 /* Turn off DMA polling */
653 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
654 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
655
656 crypto_unregister_all(sc->sc_cid);
657
658 bus_generic_detach(dev); /*XXX should be no children, right? */
659
660 bus_teardown_intr(dev, sc->sc_irq, sc->sc_intrhand);
661 /* XXX don't store rid */
662 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
663
664 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap);
665 bus_dmamem_free(sc->sc_dmat, sc->sc_dma, sc->sc_dmamap);
666 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
667 bus_dma_tag_destroy(sc->sc_dmat);
668
669 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR1, sc->sc_bar1res);
670 bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR0, sc->sc_bar0res);
671
672 mtx_destroy(&sc->sc_mtx);
673
674 return (0);
675 }
676
677 /*
678 * Stop all chip I/O so that the kernel's probe routines don't
679 * get confused by errant DMAs when rebooting.
680 */
681 static void
682 hifn_shutdown(device_t dev)
683 {
684 #ifdef notyet
685 hifn_stop(device_get_softc(dev));
686 #endif
687 }
688
689 /*
690 * Device suspend routine. Stop the interface and save some PCI
691 * settings in case the BIOS doesn't restore them properly on
692 * resume.
693 */
694 static int
695 hifn_suspend(device_t dev)
696 {
697 struct hifn_softc *sc = device_get_softc(dev);
698 #ifdef notyet
699 hifn_stop(sc);
700 #endif
701 sc->sc_suspended = 1;
702
703 return (0);
704 }
705
706 /*
707 * Device resume routine. Restore some PCI settings in case the BIOS
708 * doesn't, re-enable busmastering, and restart the interface if
709 * appropriate.
710 */
711 static int
712 hifn_resume(device_t dev)
713 {
714 struct hifn_softc *sc = device_get_softc(dev);
715 #ifdef notyet
716 /* reenable busmastering */
717 pci_enable_busmaster(dev);
718 pci_enable_io(dev, HIFN_RES);
719
720 /* reinitialize interface if necessary */
721 if (ifp->if_flags & IFF_UP)
722 rl_init(sc);
723 #endif
724 sc->sc_suspended = 0;
725
726 return (0);
727 }
728
729 static int
730 hifn_init_pubrng(struct hifn_softc *sc)
731 {
732 u_int32_t r;
733 int i;
734
735 #ifdef HIFN_RNDTEST
736 sc->sc_rndtest = rndtest_attach(sc->sc_dev);
737 if (sc->sc_rndtest)
738 sc->sc_harvest = rndtest_harvest;
739 else
740 sc->sc_harvest = default_harvest;
741 #else
742 sc->sc_harvest = default_harvest;
743 #endif
744 if ((sc->sc_flags & HIFN_IS_7811) == 0) {
745 /* Reset 7951 public key/rng engine */
746 WRITE_REG_1(sc, HIFN_1_PUB_RESET,
747 READ_REG_1(sc, HIFN_1_PUB_RESET) | HIFN_PUBRST_RESET);
748
749 for (i = 0; i < 100; i++) {
750 DELAY(1000);
751 if ((READ_REG_1(sc, HIFN_1_PUB_RESET) &
752 HIFN_PUBRST_RESET) == 0)
753 break;
754 }
755
756 if (i == 100) {
757 device_printf(sc->sc_dev, "public key init failed\n");
758 return (1);
759 }
760 }
761
762 /* Enable the rng, if available */
763 if (sc->sc_flags & HIFN_HAS_RNG) {
764 if (sc->sc_flags & HIFN_IS_7811) {
765 r = READ_REG_1(sc, HIFN_1_7811_RNGENA);
766 if (r & HIFN_7811_RNGENA_ENA) {
767 r &= ~HIFN_7811_RNGENA_ENA;
768 WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
769 }
770 WRITE_REG_1(sc, HIFN_1_7811_RNGCFG,
771 HIFN_7811_RNGCFG_DEFL);
772 r |= HIFN_7811_RNGENA_ENA;
773 WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
774 } else
775 WRITE_REG_1(sc, HIFN_1_RNG_CONFIG,
776 READ_REG_1(sc, HIFN_1_RNG_CONFIG) |
777 HIFN_RNGCFG_ENA);
778
779 sc->sc_rngfirst = 1;
780 if (hz >= 100)
781 sc->sc_rnghz = hz / 100;
782 else
783 sc->sc_rnghz = 1;
784 callout_init(&sc->sc_rngto, CALLOUT_MPSAFE);
785 callout_reset(&sc->sc_rngto, sc->sc_rnghz, hifn_rng, sc);
786 }
787
788 /* Enable public key engine, if available */
789 if (sc->sc_flags & HIFN_HAS_PUBLIC) {
790 WRITE_REG_1(sc, HIFN_1_PUB_IEN, HIFN_PUBIEN_DONE);
791 sc->sc_dmaier |= HIFN_DMAIER_PUBDONE;
792 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
793 }
794
795 return (0);
796 }
797
798 static void
799 hifn_rng(void *vsc)
800 {
801 #define RANDOM_BITS(n) (n)*sizeof (u_int32_t), (n)*sizeof (u_int32_t)*NBBY, 0
802 struct hifn_softc *sc = vsc;
803 u_int32_t sts, num[2];
804 int i;
805
806 if (sc->sc_flags & HIFN_IS_7811) {
807 for (i = 0; i < 5; i++) {
808 sts = READ_REG_1(sc, HIFN_1_7811_RNGSTS);
809 if (sts & HIFN_7811_RNGSTS_UFL) {
810 device_printf(sc->sc_dev,
811 "RNG underflow: disabling\n");
812 return;
813 }
814 if ((sts & HIFN_7811_RNGSTS_RDY) == 0)
815 break;
816
817 /*
818 * There are at least two words in the RNG FIFO
819 * at this point.
820 */
821 num[0] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
822 num[1] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
823 /* NB: discard first data read */
824 if (sc->sc_rngfirst)
825 sc->sc_rngfirst = 0;
826 else
827 (*sc->sc_harvest)(sc->sc_rndtest,
828 num, sizeof (num));
829 }
830 } else {
831 num[0] = READ_REG_1(sc, HIFN_1_RNG_DATA);
832
833 /* NB: discard first data read */
834 if (sc->sc_rngfirst)
835 sc->sc_rngfirst = 0;
836 else
837 (*sc->sc_harvest)(sc->sc_rndtest,
838 num, sizeof (num[0]));
839 }
840
841 callout_reset(&sc->sc_rngto, sc->sc_rnghz, hifn_rng, sc);
842 #undef RANDOM_BITS
843 }
844
845 static void
846 hifn_puc_wait(struct hifn_softc *sc)
847 {
848 int i;
849
850 for (i = 5000; i > 0; i--) {
851 DELAY(1);
852 if (!(READ_REG_0(sc, HIFN_0_PUCTRL) & HIFN_PUCTRL_RESET))
853 break;
854 }
855 if (!i)
856 device_printf(sc->sc_dev, "proc unit did not reset\n");
857 }
858
859 /*
860 * Reset the processing unit.
861 */
862 static void
863 hifn_reset_puc(struct hifn_softc *sc)
864 {
865 /* Reset processing unit */
866 WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
867 hifn_puc_wait(sc);
868 }
869
870 /*
871 * Set the Retry and TRDY registers; note that we set them to
872 * zero because the 7811 locks up when forced to retry (section
873 * 3.6 of "Specification Update SU-0014-04". Not clear if we
874 * should do this for all Hifn parts, but it doesn't seem to hurt.
875 */
876 static void
877 hifn_set_retry(struct hifn_softc *sc)
878 {
879 /* NB: RETRY only responds to 8-bit reads/writes */
880 pci_write_config(sc->sc_dev, HIFN_RETRY_TIMEOUT, 0, 1);
881 pci_write_config(sc->sc_dev, HIFN_TRDY_TIMEOUT, 0, 4);
882 }
883
884 /*
885 * Resets the board. Values in the regesters are left as is
886 * from the reset (i.e. initial values are assigned elsewhere).
887 */
888 static void
889 hifn_reset_board(struct hifn_softc *sc, int full)
890 {
891 u_int32_t reg;
892
893 /*
894 * Set polling in the DMA configuration register to zero. 0x7 avoids
895 * resetting the board and zeros out the other fields.
896 */
897 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
898 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
899
900 /*
901 * Now that polling has been disabled, we have to wait 1 ms
902 * before resetting the board.
903 */
904 DELAY(1000);
905
906 /* Reset the DMA unit */
907 if (full) {
908 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE);
909 DELAY(1000);
910 } else {
911 WRITE_REG_1(sc, HIFN_1_DMA_CNFG,
912 HIFN_DMACNFG_MODE | HIFN_DMACNFG_MSTRESET);
913 hifn_reset_puc(sc);
914 }
915
916 KASSERT(sc->sc_dma != NULL, ("hifn_reset_board: null DMA tag!"));
917 bzero(sc->sc_dma, sizeof(*sc->sc_dma));
918
919 /* Bring dma unit out of reset */
920 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
921 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
922
923 hifn_puc_wait(sc);
924 hifn_set_retry(sc);
925
926 if (sc->sc_flags & HIFN_IS_7811) {
927 for (reg = 0; reg < 1000; reg++) {
928 if (READ_REG_1(sc, HIFN_1_7811_MIPSRST) &
929 HIFN_MIPSRST_CRAMINIT)
930 break;
931 DELAY(1000);
932 }
933 if (reg == 1000)
934 printf(": cram init timeout\n");
935 }
936 }
937
938 static u_int32_t
939 hifn_next_signature(u_int32_t a, u_int cnt)
940 {
941 int i;
942 u_int32_t v;
943
944 for (i = 0; i < cnt; i++) {
945
946 /* get the parity */
947 v = a & 0x80080125;
948 v ^= v >> 16;
949 v ^= v >> 8;
950 v ^= v >> 4;
951 v ^= v >> 2;
952 v ^= v >> 1;
953
954 a = (v & 1) ^ (a << 1);
955 }
956
957 return a;
958 }
959
960 struct pci2id {
961 u_short pci_vendor;
962 u_short pci_prod;
963 char card_id[13];
964 };
965 static struct pci2id pci2id[] = {
966 {
967 PCI_VENDOR_HIFN,
968 PCI_PRODUCT_HIFN_7951,
969 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
970 0x00, 0x00, 0x00, 0x00, 0x00 }
971 }, {
972 PCI_VENDOR_HIFN,
973 PCI_PRODUCT_HIFN_7955,
974 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
975 0x00, 0x00, 0x00, 0x00, 0x00 }
976 }, {
977 PCI_VENDOR_HIFN,
978 PCI_PRODUCT_HIFN_7956,
979 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
980 0x00, 0x00, 0x00, 0x00, 0x00 }
981 }, {
982 PCI_VENDOR_NETSEC,
983 PCI_PRODUCT_NETSEC_7751,
984 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
985 0x00, 0x00, 0x00, 0x00, 0x00 }
986 }, {
987 PCI_VENDOR_INVERTEX,
988 PCI_PRODUCT_INVERTEX_AEON,
989 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
990 0x00, 0x00, 0x00, 0x00, 0x00 }
991 }, {
992 PCI_VENDOR_HIFN,
993 PCI_PRODUCT_HIFN_7811,
994 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
995 0x00, 0x00, 0x00, 0x00, 0x00 }
996 }, {
997 /*
998 * Other vendors share this PCI ID as well, such as
999 * http://www.powercrypt.com, and obviously they also
1000 * use the same key.
1001 */
1002 PCI_VENDOR_HIFN,
1003 PCI_PRODUCT_HIFN_7751,
1004 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1005 0x00, 0x00, 0x00, 0x00, 0x00 }
1006 },
1007 };
1008
1009 /*
1010 * Checks to see if crypto is already enabled. If crypto isn't enable,
1011 * "hifn_enable_crypto" is called to enable it. The check is important,
1012 * as enabling crypto twice will lock the board.
1013 */
1014 static int
1015 hifn_enable_crypto(struct hifn_softc *sc)
1016 {
1017 u_int32_t dmacfg, ramcfg, encl, addr, i;
1018 char *offtbl = NULL;
1019
1020 for (i = 0; i < sizeof(pci2id)/sizeof(pci2id[0]); i++) {
1021 if (pci2id[i].pci_vendor == pci_get_vendor(sc->sc_dev) &&
1022 pci2id[i].pci_prod == pci_get_device(sc->sc_dev)) {
1023 offtbl = pci2id[i].card_id;
1024 break;
1025 }
1026 }
1027 if (offtbl == NULL) {
1028 device_printf(sc->sc_dev, "Unknown card!\n");
1029 return (1);
1030 }
1031
1032 ramcfg = READ_REG_0(sc, HIFN_0_PUCNFG);
1033 dmacfg = READ_REG_1(sc, HIFN_1_DMA_CNFG);
1034
1035 /*
1036 * The RAM config register's encrypt level bit needs to be set before
1037 * every read performed on the encryption level register.
1038 */
1039 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
1040
1041 encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
1042
1043 /*
1044 * Make sure we don't re-unlock. Two unlocks kills chip until the
1045 * next reboot.
1046 */
1047 if (encl == HIFN_PUSTAT_ENA_1 || encl == HIFN_PUSTAT_ENA_2) {
1048 #ifdef HIFN_DEBUG
1049 if (hifn_debug)
1050 device_printf(sc->sc_dev,
1051 "Strong crypto already enabled!\n");
1052 #endif
1053 goto report;
1054 }
1055
1056 if (encl != 0 && encl != HIFN_PUSTAT_ENA_0) {
1057 #ifdef HIFN_DEBUG
1058 if (hifn_debug)
1059 device_printf(sc->sc_dev,
1060 "Unknown encryption level 0x%x\n", encl);
1061 #endif
1062 return 1;
1063 }
1064
1065 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_UNLOCK |
1066 HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
1067 DELAY(1000);
1068 addr = READ_REG_1(sc, HIFN_UNLOCK_SECRET1);
1069 DELAY(1000);
1070 WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, 0);
1071 DELAY(1000);
1072
1073 for (i = 0; i <= 12; i++) {
1074 addr = hifn_next_signature(addr, offtbl[i] + 0x101);
1075 WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, addr);
1076
1077 DELAY(1000);
1078 }
1079
1080 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
1081 encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
1082
1083 #ifdef HIFN_DEBUG
1084 if (hifn_debug) {
1085 if (encl != HIFN_PUSTAT_ENA_1 && encl != HIFN_PUSTAT_ENA_2)
1086 device_printf(sc->sc_dev, "Engine is permanently "
1087 "locked until next system reset!\n");
1088 else
1089 device_printf(sc->sc_dev, "Engine enabled "
1090 "successfully!\n");
1091 }
1092 #endif
1093
1094 report:
1095 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg);
1096 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, dmacfg);
1097
1098 switch (encl) {
1099 case HIFN_PUSTAT_ENA_1:
1100 case HIFN_PUSTAT_ENA_2:
1101 break;
1102 case HIFN_PUSTAT_ENA_0:
1103 default:
1104 device_printf(sc->sc_dev, "disabled");
1105 break;
1106 }
1107
1108 return 0;
1109 }
1110
1111 /*
1112 * Give initial values to the registers listed in the "Register Space"
1113 * section of the HIFN Software Development reference manual.
1114 */
1115 static void
1116 hifn_init_pci_registers(struct hifn_softc *sc)
1117 {
1118 /* write fixed values needed by the Initialization registers */
1119 WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
1120 WRITE_REG_0(sc, HIFN_0_FIFOCNFG, HIFN_FIFOCNFG_THRESHOLD);
1121 WRITE_REG_0(sc, HIFN_0_PUIER, HIFN_PUIER_DSTOVER);
1122
1123 /* write all 4 ring address registers */
1124 WRITE_REG_1(sc, HIFN_1_DMA_CRAR, sc->sc_dma_physaddr +
1125 offsetof(struct hifn_dma, cmdr[0]));
1126 WRITE_REG_1(sc, HIFN_1_DMA_SRAR, sc->sc_dma_physaddr +
1127 offsetof(struct hifn_dma, srcr[0]));
1128 WRITE_REG_1(sc, HIFN_1_DMA_DRAR, sc->sc_dma_physaddr +
1129 offsetof(struct hifn_dma, dstr[0]));
1130 WRITE_REG_1(sc, HIFN_1_DMA_RRAR, sc->sc_dma_physaddr +
1131 offsetof(struct hifn_dma, resr[0]));
1132
1133 DELAY(2000);
1134
1135 /* write status register */
1136 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1137 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS |
1138 HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_C_CTRL_DIS |
1139 HIFN_DMACSR_D_ABORT | HIFN_DMACSR_D_DONE | HIFN_DMACSR_D_LAST |
1140 HIFN_DMACSR_D_WAIT | HIFN_DMACSR_D_OVER |
1141 HIFN_DMACSR_R_ABORT | HIFN_DMACSR_R_DONE | HIFN_DMACSR_R_LAST |
1142 HIFN_DMACSR_R_WAIT | HIFN_DMACSR_R_OVER |
1143 HIFN_DMACSR_S_ABORT | HIFN_DMACSR_S_DONE | HIFN_DMACSR_S_LAST |
1144 HIFN_DMACSR_S_WAIT |
1145 HIFN_DMACSR_C_ABORT | HIFN_DMACSR_C_DONE | HIFN_DMACSR_C_LAST |
1146 HIFN_DMACSR_C_WAIT |
1147 HIFN_DMACSR_ENGINE |
1148 ((sc->sc_flags & HIFN_HAS_PUBLIC) ?
1149 HIFN_DMACSR_PUBDONE : 0) |
1150 ((sc->sc_flags & HIFN_IS_7811) ?
1151 HIFN_DMACSR_ILLW | HIFN_DMACSR_ILLR : 0));
1152
1153 sc->sc_d_busy = sc->sc_r_busy = sc->sc_s_busy = sc->sc_c_busy = 0;
1154 sc->sc_dmaier |= HIFN_DMAIER_R_DONE | HIFN_DMAIER_C_ABORT |
1155 HIFN_DMAIER_D_OVER | HIFN_DMAIER_R_OVER |
1156 HIFN_DMAIER_S_ABORT | HIFN_DMAIER_D_ABORT | HIFN_DMAIER_R_ABORT |
1157 ((sc->sc_flags & HIFN_IS_7811) ?
1158 HIFN_DMAIER_ILLW | HIFN_DMAIER_ILLR : 0);
1159 sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
1160 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
1161
1162
1163 if (sc->sc_flags & HIFN_IS_7956) {
1164 u_int32_t pll;
1165
1166 WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
1167 HIFN_PUCNFG_TCALLPHASES |
1168 HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32);
1169
1170 /* turn off the clocks and insure bypass is set */
1171 pll = READ_REG_1(sc, HIFN_1_PLL);
1172 pll = (pll &~ (HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL))
1173 | HIFN_PLL_BP;
1174 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1175 DELAY(10*1000); /* 10ms */
1176 /* change configuration */
1177 pll = (pll &~ HIFN_PLL_CONFIG) | sc->sc_pllconfig;
1178 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1179 DELAY(10*1000); /* 10ms */
1180 /* disable bypass */
1181 pll &= ~HIFN_PLL_BP;
1182 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1183 /* enable clocks with new configuration */
1184 pll |= HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL;
1185 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1186 } else {
1187 WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
1188 HIFN_PUCNFG_DRFR_128 | HIFN_PUCNFG_TCALLPHASES |
1189 HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32 |
1190 (sc->sc_drammodel ? HIFN_PUCNFG_DRAM : HIFN_PUCNFG_SRAM));
1191 }
1192
1193 WRITE_REG_0(sc, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
1194 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
1195 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE | HIFN_DMACNFG_LAST |
1196 ((HIFN_POLL_FREQUENCY << 16 ) & HIFN_DMACNFG_POLLFREQ) |
1197 ((HIFN_POLL_SCALAR << 8) & HIFN_DMACNFG_POLLINVAL));
1198 }
1199
1200 /*
1201 * The maximum number of sessions supported by the card
1202 * is dependent on the amount of context ram, which
1203 * encryption algorithms are enabled, and how compression
1204 * is configured. This should be configured before this
1205 * routine is called.
1206 */
1207 static void
1208 hifn_sessions(struct hifn_softc *sc)
1209 {
1210 u_int32_t pucnfg;
1211 int ctxsize;
1212
1213 pucnfg = READ_REG_0(sc, HIFN_0_PUCNFG);
1214
1215 if (pucnfg & HIFN_PUCNFG_COMPSING) {
1216 if (pucnfg & HIFN_PUCNFG_ENCCNFG)
1217 ctxsize = 128;
1218 else
1219 ctxsize = 512;
1220 /*
1221 * 7955/7956 has internal context memory of 32K
1222 */
1223 if (sc->sc_flags & HIFN_IS_7956)
1224 sc->sc_maxses = 32768 / ctxsize;
1225 else
1226 sc->sc_maxses = 1 +
1227 ((sc->sc_ramsize - 32768) / ctxsize);
1228 } else
1229 sc->sc_maxses = sc->sc_ramsize / 16384;
1230
1231 if (sc->sc_maxses > 2048)
1232 sc->sc_maxses = 2048;
1233 }
1234
1235 /*
1236 * Determine ram type (sram or dram). Board should be just out of a reset
1237 * state when this is called.
1238 */
1239 static int
1240 hifn_ramtype(struct hifn_softc *sc)
1241 {
1242 u_int8_t data[8], dataexpect[8];
1243 int i;
1244
1245 for (i = 0; i < sizeof(data); i++)
1246 data[i] = dataexpect[i] = 0x55;
1247 if (hifn_writeramaddr(sc, 0, data))
1248 return (-1);
1249 if (hifn_readramaddr(sc, 0, data))
1250 return (-1);
1251 if (bcmp(data, dataexpect, sizeof(data)) != 0) {
1252 sc->sc_drammodel = 1;
1253 return (0);
1254 }
1255
1256 for (i = 0; i < sizeof(data); i++)
1257 data[i] = dataexpect[i] = 0xaa;
1258 if (hifn_writeramaddr(sc, 0, data))
1259 return (-1);
1260 if (hifn_readramaddr(sc, 0, data))
1261 return (-1);
1262 if (bcmp(data, dataexpect, sizeof(data)) != 0) {
1263 sc->sc_drammodel = 1;
1264 return (0);
1265 }
1266
1267 return (0);
1268 }
1269
1270 #define HIFN_SRAM_MAX (32 << 20)
1271 #define HIFN_SRAM_STEP_SIZE 16384
1272 #define HIFN_SRAM_GRANULARITY (HIFN_SRAM_MAX / HIFN_SRAM_STEP_SIZE)
1273
1274 static int
1275 hifn_sramsize(struct hifn_softc *sc)
1276 {
1277 u_int32_t a;
1278 u_int8_t data[8];
1279 u_int8_t dataexpect[sizeof(data)];
1280 int32_t i;
1281
1282 for (i = 0; i < sizeof(data); i++)
1283 data[i] = dataexpect[i] = i ^ 0x5a;
1284
1285 for (i = HIFN_SRAM_GRANULARITY - 1; i >= 0; i--) {
1286 a = i * HIFN_SRAM_STEP_SIZE;
1287 bcopy(&i, data, sizeof(i));
1288 hifn_writeramaddr(sc, a, data);
1289 }
1290
1291 for (i = 0; i < HIFN_SRAM_GRANULARITY; i++) {
1292 a = i * HIFN_SRAM_STEP_SIZE;
1293 bcopy(&i, dataexpect, sizeof(i));
1294 if (hifn_readramaddr(sc, a, data) < 0)
1295 return (0);
1296 if (bcmp(data, dataexpect, sizeof(data)) != 0)
1297 return (0);
1298 sc->sc_ramsize = a + HIFN_SRAM_STEP_SIZE;
1299 }
1300
1301 return (0);
1302 }
1303
1304 /*
1305 * XXX For dram boards, one should really try all of the
1306 * HIFN_PUCNFG_DSZ_*'s. This just assumes that PUCNFG
1307 * is already set up correctly.
1308 */
1309 static int
1310 hifn_dramsize(struct hifn_softc *sc)
1311 {
1312 u_int32_t cnfg;
1313
1314 if (sc->sc_flags & HIFN_IS_7956) {
1315 /*
1316 * 7955/7956 have a fixed internal ram of only 32K.
1317 */
1318 sc->sc_ramsize = 32768;
1319 } else {
1320 cnfg = READ_REG_0(sc, HIFN_0_PUCNFG) &
1321 HIFN_PUCNFG_DRAMMASK;
1322 sc->sc_ramsize = 1 << ((cnfg >> 13) + 18);
1323 }
1324 return (0);
1325 }
1326
1327 static void
1328 hifn_alloc_slot(struct hifn_softc *sc, int *cmdp, int *srcp, int *dstp, int *resp)
1329 {
1330 struct hifn_dma *dma = sc->sc_dma;
1331
1332 if (dma->cmdi == HIFN_D_CMD_RSIZE) {
1333 dma->cmdi = 0;
1334 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID |
1335 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1336 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
1337 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1338 }
1339 *cmdp = dma->cmdi++;
1340 dma->cmdk = dma->cmdi;
1341
1342 if (dma->srci == HIFN_D_SRC_RSIZE) {
1343 dma->srci = 0;
1344 dma->srcr[HIFN_D_SRC_RSIZE].l = htole32(HIFN_D_VALID |
1345 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1346 HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
1347 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1348 }
1349 *srcp = dma->srci++;
1350 dma->srck = dma->srci;
1351
1352 if (dma->dsti == HIFN_D_DST_RSIZE) {
1353 dma->dsti = 0;
1354 dma->dstr[HIFN_D_DST_RSIZE].l = htole32(HIFN_D_VALID |
1355 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1356 HIFN_DSTR_SYNC(sc, HIFN_D_DST_RSIZE,
1357 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1358 }
1359 *dstp = dma->dsti++;
1360 dma->dstk = dma->dsti;
1361
1362 if (dma->resi == HIFN_D_RES_RSIZE) {
1363 dma->resi = 0;
1364 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID |
1365 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1366 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
1367 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1368 }
1369 *resp = dma->resi++;
1370 dma->resk = dma->resi;
1371 }
1372
1373 static int
1374 hifn_writeramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
1375 {
1376 struct hifn_dma *dma = sc->sc_dma;
1377 hifn_base_command_t wc;
1378 const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
1379 int r, cmdi, resi, srci, dsti;
1380
1381 wc.masks = htole16(3 << 13);
1382 wc.session_num = htole16(addr >> 14);
1383 wc.total_source_count = htole16(8);
1384 wc.total_dest_count = htole16(addr & 0x3fff);
1385
1386 hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
1387
1388 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1389 HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
1390 HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
1391
1392 /* build write command */
1393 bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
1394 *(hifn_base_command_t *)dma->command_bufs[cmdi] = wc;
1395 bcopy(data, &dma->test_src, sizeof(dma->test_src));
1396
1397 dma->srcr[srci].p = htole32(sc->sc_dma_physaddr
1398 + offsetof(struct hifn_dma, test_src));
1399 dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr
1400 + offsetof(struct hifn_dma, test_dst));
1401
1402 dma->cmdr[cmdi].l = htole32(16 | masks);
1403 dma->srcr[srci].l = htole32(8 | masks);
1404 dma->dstr[dsti].l = htole32(4 | masks);
1405 dma->resr[resi].l = htole32(4 | masks);
1406
1407 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1408 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1409
1410 for (r = 10000; r >= 0; r--) {
1411 DELAY(10);
1412 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1413 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1414 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
1415 break;
1416 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1417 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1418 }
1419 if (r == 0) {
1420 device_printf(sc->sc_dev, "writeramaddr -- "
1421 "result[%d](addr %d) still valid\n", resi, addr);
1422 r = -1;
1423 return (-1);
1424 } else
1425 r = 0;
1426
1427 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1428 HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
1429 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
1430
1431 return (r);
1432 }
1433
1434 static int
1435 hifn_readramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
1436 {
1437 struct hifn_dma *dma = sc->sc_dma;
1438 hifn_base_command_t rc;
1439 const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
1440 int r, cmdi, srci, dsti, resi;
1441
1442 rc.masks = htole16(2 << 13);
1443 rc.session_num = htole16(addr >> 14);
1444 rc.total_source_count = htole16(addr & 0x3fff);
1445 rc.total_dest_count = htole16(8);
1446
1447 hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
1448
1449 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1450 HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
1451 HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
1452
1453 bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
1454 *(hifn_base_command_t *)dma->command_bufs[cmdi] = rc;
1455
1456 dma->srcr[srci].p = htole32(sc->sc_dma_physaddr +
1457 offsetof(struct hifn_dma, test_src));
1458 dma->test_src = 0;
1459 dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr +
1460 offsetof(struct hifn_dma, test_dst));
1461 dma->test_dst = 0;
1462 dma->cmdr[cmdi].l = htole32(8 | masks);
1463 dma->srcr[srci].l = htole32(8 | masks);
1464 dma->dstr[dsti].l = htole32(8 | masks);
1465 dma->resr[resi].l = htole32(HIFN_MAX_RESULT | masks);
1466
1467 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1468 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1469
1470 for (r = 10000; r >= 0; r--) {
1471 DELAY(10);
1472 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1473 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1474 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
1475 break;
1476 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
1477 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1478 }
1479 if (r == 0) {
1480 device_printf(sc->sc_dev, "readramaddr -- "
1481 "result[%d](addr %d) still valid\n", resi, addr);
1482 r = -1;
1483 } else {
1484 r = 0;
1485 bcopy(&dma->test_dst, data, sizeof(dma->test_dst));
1486 }
1487
1488 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1489 HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
1490 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
1491
1492 return (r);
1493 }
1494
1495 /*
1496 * Initialize the descriptor rings.
1497 */
1498 static void
1499 hifn_init_dma(struct hifn_softc *sc)
1500 {
1501 struct hifn_dma *dma = sc->sc_dma;
1502 int i;
1503
1504 hifn_set_retry(sc);
1505
1506 /* initialize static pointer values */
1507 for (i = 0; i < HIFN_D_CMD_RSIZE; i++)
1508 dma->cmdr[i].p = htole32(sc->sc_dma_physaddr +
1509 offsetof(struct hifn_dma, command_bufs[i][0]));
1510 for (i = 0; i < HIFN_D_RES_RSIZE; i++)
1511 dma->resr[i].p = htole32(sc->sc_dma_physaddr +
1512 offsetof(struct hifn_dma, result_bufs[i][0]));
1513
1514 dma->cmdr[HIFN_D_CMD_RSIZE].p =
1515 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, cmdr[0]));
1516 dma->srcr[HIFN_D_SRC_RSIZE].p =
1517 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, srcr[0]));
1518 dma->dstr[HIFN_D_DST_RSIZE].p =
1519 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, dstr[0]));
1520 dma->resr[HIFN_D_RES_RSIZE].p =
1521 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, resr[0]));
1522
1523 dma->cmdu = dma->srcu = dma->dstu = dma->resu = 0;
1524 dma->cmdi = dma->srci = dma->dsti = dma->resi = 0;
1525 dma->cmdk = dma->srck = dma->dstk = dma->resk = 0;
1526 }
1527
1528 /*
1529 * Writes out the raw command buffer space. Returns the
1530 * command buffer size.
1531 */
1532 static u_int
1533 hifn_write_command(struct hifn_command *cmd, u_int8_t *buf)
1534 {
1535 u_int8_t *buf_pos;
1536 hifn_base_command_t *base_cmd;
1537 hifn_mac_command_t *mac_cmd;
1538 hifn_crypt_command_t *cry_cmd;
1539 int using_mac, using_crypt, len, ivlen;
1540 u_int32_t dlen, slen;
1541
1542 buf_pos = buf;
1543 using_mac = cmd->base_masks & HIFN_BASE_CMD_MAC;
1544 using_crypt = cmd->base_masks & HIFN_BASE_CMD_CRYPT;
1545
1546 base_cmd = (hifn_base_command_t *)buf_pos;
1547 base_cmd->masks = htole16(cmd->base_masks);
1548 slen = cmd->src_mapsize;
1549 if (cmd->sloplen)
1550 dlen = cmd->dst_mapsize - cmd->sloplen + sizeof(u_int32_t);
1551 else
1552 dlen = cmd->dst_mapsize;
1553 base_cmd->total_source_count = htole16(slen & HIFN_BASE_CMD_LENMASK_LO);
1554 base_cmd->total_dest_count = htole16(dlen & HIFN_BASE_CMD_LENMASK_LO);
1555 dlen >>= 16;
1556 slen >>= 16;
1557 base_cmd->session_num = htole16(
1558 ((slen << HIFN_BASE_CMD_SRCLEN_S) & HIFN_BASE_CMD_SRCLEN_M) |
1559 ((dlen << HIFN_BASE_CMD_DSTLEN_S) & HIFN_BASE_CMD_DSTLEN_M));
1560 buf_pos += sizeof(hifn_base_command_t);
1561
1562 if (using_mac) {
1563 mac_cmd = (hifn_mac_command_t *)buf_pos;
1564 dlen = cmd->maccrd->crd_len;
1565 mac_cmd->source_count = htole16(dlen & 0xffff);
1566 dlen >>= 16;
1567 mac_cmd->masks = htole16(cmd->mac_masks |
1568 ((dlen << HIFN_MAC_CMD_SRCLEN_S) & HIFN_MAC_CMD_SRCLEN_M));
1569 mac_cmd->header_skip = htole16(cmd->maccrd->crd_skip);
1570 mac_cmd->reserved = 0;
1571 buf_pos += sizeof(hifn_mac_command_t);
1572 }
1573
1574 if (using_crypt) {
1575 cry_cmd = (hifn_crypt_command_t *)buf_pos;
1576 dlen = cmd->enccrd->crd_len;
1577 cry_cmd->source_count = htole16(dlen & 0xffff);
1578 dlen >>= 16;
1579 cry_cmd->masks = htole16(cmd->cry_masks |
1580 ((dlen << HIFN_CRYPT_CMD_SRCLEN_S) & HIFN_CRYPT_CMD_SRCLEN_M));
1581 cry_cmd->header_skip = htole16(cmd->enccrd->crd_skip);
1582 cry_cmd->reserved = 0;
1583 buf_pos += sizeof(hifn_crypt_command_t);
1584 }
1585
1586 if (using_mac && cmd->mac_masks & HIFN_MAC_CMD_NEW_KEY) {
1587 bcopy(cmd->mac, buf_pos, HIFN_MAC_KEY_LENGTH);
1588 buf_pos += HIFN_MAC_KEY_LENGTH;
1589 }
1590
1591 if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_KEY) {
1592 switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
1593 case HIFN_CRYPT_CMD_ALG_3DES:
1594 bcopy(cmd->ck, buf_pos, HIFN_3DES_KEY_LENGTH);
1595 buf_pos += HIFN_3DES_KEY_LENGTH;
1596 break;
1597 case HIFN_CRYPT_CMD_ALG_DES:
1598 bcopy(cmd->ck, buf_pos, HIFN_DES_KEY_LENGTH);
1599 buf_pos += HIFN_DES_KEY_LENGTH;
1600 break;
1601 case HIFN_CRYPT_CMD_ALG_RC4:
1602 len = 256;
1603 do {
1604 int clen;
1605
1606 clen = MIN(cmd->cklen, len);
1607 bcopy(cmd->ck, buf_pos, clen);
1608 len -= clen;
1609 buf_pos += clen;
1610 } while (len > 0);
1611 bzero(buf_pos, 4);
1612 buf_pos += 4;
1613 break;
1614 case HIFN_CRYPT_CMD_ALG_AES:
1615 /*
1616 * AES keys are variable 128, 192 and
1617 * 256 bits (16, 24 and 32 bytes).
1618 */
1619 bcopy(cmd->ck, buf_pos, cmd->cklen);
1620 buf_pos += cmd->cklen;
1621 break;
1622 }
1623 }
1624
1625 if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_IV) {
1626 switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
1627 case HIFN_CRYPT_CMD_ALG_AES:
1628 ivlen = HIFN_AES_IV_LENGTH;
1629 break;
1630 default:
1631 ivlen = HIFN_IV_LENGTH;
1632 break;
1633 }
1634 bcopy(cmd->iv, buf_pos, ivlen);
1635 buf_pos += ivlen;
1636 }
1637
1638 if ((cmd->base_masks & (HIFN_BASE_CMD_MAC|HIFN_BASE_CMD_CRYPT)) == 0) {
1639 bzero(buf_pos, 8);
1640 buf_pos += 8;
1641 }
1642
1643 return (buf_pos - buf);
1644 }
1645
1646 static int
1647 hifn_dmamap_aligned(struct hifn_operand *op)
1648 {
1649 int i;
1650
1651 for (i = 0; i < op->nsegs; i++) {
1652 if (op->segs[i].ds_addr & 3)
1653 return (0);
1654 if ((i != (op->nsegs - 1)) && (op->segs[i].ds_len & 3))
1655 return (0);
1656 }
1657 return (1);
1658 }
1659
1660 static int
1661 hifn_dmamap_load_dst(struct hifn_softc *sc, struct hifn_command *cmd)
1662 {
1663 struct hifn_dma *dma = sc->sc_dma;
1664 struct hifn_operand *dst = &cmd->dst;
1665 u_int32_t p, l;
1666 int idx, used = 0, i;
1667
1668 idx = dma->dsti;
1669 for (i = 0; i < dst->nsegs - 1; i++) {
1670 dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
1671 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1672 HIFN_D_MASKDONEIRQ | dst->segs[i].ds_len);
1673 HIFN_DSTR_SYNC(sc, idx,
1674 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1675 used++;
1676
1677 if (++idx == HIFN_D_DST_RSIZE) {
1678 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1679 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1680 HIFN_DSTR_SYNC(sc, idx,
1681 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1682 idx = 0;
1683 }
1684 }
1685
1686 if (cmd->sloplen == 0) {
1687 p = dst->segs[i].ds_addr;
1688 l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
1689 dst->segs[i].ds_len;
1690 } else {
1691 p = sc->sc_dma_physaddr +
1692 offsetof(struct hifn_dma, slop[cmd->slopidx]);
1693 l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
1694 sizeof(u_int32_t);
1695
1696 if ((dst->segs[i].ds_len - cmd->sloplen) != 0) {
1697 dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
1698 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1699 HIFN_D_MASKDONEIRQ |
1700 (dst->segs[i].ds_len - cmd->sloplen));
1701 HIFN_DSTR_SYNC(sc, idx,
1702 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1703 used++;
1704
1705 if (++idx == HIFN_D_DST_RSIZE) {
1706 dma->dstr[idx].l = htole32(HIFN_D_VALID |
1707 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1708 HIFN_DSTR_SYNC(sc, idx,
1709 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1710 idx = 0;
1711 }
1712 }
1713 }
1714 dma->dstr[idx].p = htole32(p);
1715 dma->dstr[idx].l = htole32(l);
1716 HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1717 used++;
1718
1719 if (++idx == HIFN_D_DST_RSIZE) {
1720 dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP |
1721 HIFN_D_MASKDONEIRQ);
1722 HIFN_DSTR_SYNC(sc, idx,
1723 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1724 idx = 0;
1725 }
1726
1727 dma->dsti = idx;
1728 dma->dstu += used;
1729 return (idx);
1730 }
1731
1732 static int
1733 hifn_dmamap_load_src(struct hifn_softc *sc, struct hifn_command *cmd)
1734 {
1735 struct hifn_dma *dma = sc->sc_dma;
1736 struct hifn_operand *src = &cmd->src;
1737 int idx, i;
1738 u_int32_t last = 0;
1739
1740 idx = dma->srci;
1741 for (i = 0; i < src->nsegs; i++) {
1742 if (i == src->nsegs - 1)
1743 last = HIFN_D_LAST;
1744
1745 dma->srcr[idx].p = htole32(src->segs[i].ds_addr);
1746 dma->srcr[idx].l = htole32(src->segs[i].ds_len |
1747 HIFN_D_VALID | HIFN_D_MASKDONEIRQ | last);
1748 HIFN_SRCR_SYNC(sc, idx,
1749 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1750
1751 if (++idx == HIFN_D_SRC_RSIZE) {
1752 dma->srcr[idx].l = htole32(HIFN_D_VALID |
1753 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1754 HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
1755 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1756 idx = 0;
1757 }
1758 }
1759 dma->srci = idx;
1760 dma->srcu += src->nsegs;
1761 return (idx);
1762 }
1763
1764 static void
1765 hifn_op_cb(struct hifn_operand *op, bus_dma_segment_t *seg, int nsegs,
1766 int error)
1767 {
1768
1769 KASSERT(nsegs <= MAX_SCATTER,
1770 ("hifn_op_cb: too many DMA segments (%u > %u) "
1771 "returned when mapping operand", nsegs, MAX_SCATTER));
1772 op->nsegs = nsegs;
1773 bcopy(seg, op->segs, nsegs * sizeof (seg[0]));
1774 }
1775
1776 static void
1777 hifn_op_cb1(void *arg, bus_dma_segment_t *seg, int nsegs, int error)
1778 {
1779
1780 hifn_op_cb(arg, seg, nsegs, error);
1781 }
1782
1783 static void
1784 hifn_op_cb2(void *arg, bus_dma_segment_t *seg, int nsegs,
1785 bus_size_t mapsize, int error)
1786 {
1787
1788 hifn_op_cb(arg, seg, nsegs, error);
1789 }
1790
1791 static int
1792 hifn_crypto(
1793 struct hifn_softc *sc,
1794 struct hifn_command *cmd,
1795 struct cryptop *crp,
1796 int hint)
1797 {
1798 struct hifn_dma *dma = sc->sc_dma;
1799 u_int32_t cmdlen;
1800 int cmdi, resi, err = 0;
1801
1802 /*
1803 * need 1 cmd, and 1 res
1804 *
1805 * NB: check this first since it's easy.
1806 */
1807 HIFN_LOCK(sc);
1808 if ((dma->cmdu + 1) > HIFN_D_CMD_RSIZE ||
1809 (dma->resu + 1) > HIFN_D_RES_RSIZE) {
1810 #ifdef HIFN_DEBUG
1811 if (hifn_debug) {
1812 device_printf(sc->sc_dev,
1813 "cmd/result exhaustion, cmdu %u resu %u\n",
1814 dma->cmdu, dma->resu);
1815 }
1816 #endif
1817 hifnstats.hst_nomem_cr++;
1818 HIFN_UNLOCK(sc);
1819 return (ERESTART);
1820 }
1821
1822 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &cmd->src_map)) {
1823 hifnstats.hst_nomem_map++;
1824 HIFN_UNLOCK(sc);
1825 return (ENOMEM);
1826 }
1827
1828 cmd->src_mapsize = cmd->dst_mapsize = crp->crp_ilen;
1829
1830 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1831 err = bus_dmamap_load_mbuf(sc->sc_dmat, cmd->src_map,
1832 cmd->src_m, hifn_op_cb2, &cmd->src, BUS_DMA_NOWAIT);
1833 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1834 err = bus_dmamap_load_uio(sc->sc_dmat, cmd->src_map,
1835 cmd->src_io, hifn_op_cb2, &cmd->src, BUS_DMA_NOWAIT);
1836 } else {
1837 err = bus_dmamap_load(sc->sc_dmat, cmd->src_map, cmd->src_buf,
1838 crp->crp_ilen, hifn_op_cb1, &cmd->src, BUS_DMA_NOWAIT);
1839 }
1840 if (err != 0) {
1841 hifnstats.hst_nomem_load++;
1842 err = ENOMEM;
1843 goto err_srcmap1;
1844 }
1845
1846 if (hifn_dmamap_aligned(&cmd->src)) {
1847 cmd->sloplen = cmd->src_mapsize & 3;
1848 cmd->dst = cmd->src;
1849 } else {
1850 if (crp->crp_flags & CRYPTO_F_IOV) {
1851 err = EINVAL;
1852 goto err_srcmap;
1853 } else if (crp->crp_flags & CRYPTO_F_IMBUF) {
1854 int totlen, len;
1855 struct mbuf *m, *m0, *mlast;
1856
1857 KASSERT(cmd->dst_m == cmd->src_m,
1858 ("hifn_crypto: dst_m initialized improperly"));
1859 hifnstats.hst_unaligned++;
1860 /*
1861 * Source is not aligned on a longword boundary.
1862 * Copy the data to insure alignment. If we fail
1863 * to allocate mbufs or clusters while doing this
1864 * we return ERESTART so the operation is requeued
1865 * at the crypto later, but only if there are
1866 * ops already posted to the hardware; otherwise we
1867 * have no guarantee that we'll be re-entered.
1868 */
1869 totlen = cmd->src_mapsize;
1870 if (cmd->src_m->m_flags & M_PKTHDR) {
1871 len = MHLEN;
1872 MGETHDR(m0, M_DONTWAIT, MT_DATA);
1873 if (m0 && !m_dup_pkthdr(m0, cmd->src_m, M_DONTWAIT)) {
1874 m_free(m0);
1875 m0 = NULL;
1876 }
1877 } else {
1878 len = MLEN;
1879 MGET(m0, M_DONTWAIT, MT_DATA);
1880 }
1881 if (m0 == NULL) {
1882 hifnstats.hst_nomem_mbuf++;
1883 err = dma->cmdu ? ERESTART : ENOMEM;
1884 goto err_srcmap;
1885 }
1886 if (totlen >= MINCLSIZE) {
1887 MCLGET(m0, M_DONTWAIT);
1888 if ((m0->m_flags & M_EXT) == 0) {
1889 hifnstats.hst_nomem_mcl++;
1890 err = dma->cmdu ? ERESTART : ENOMEM;
1891 m_freem(m0);
1892 goto err_srcmap;
1893 }
1894 len = MCLBYTES;
1895 }
1896 totlen -= len;
1897 m0->m_pkthdr.len = m0->m_len = len;
1898 mlast = m0;
1899
1900 while (totlen > 0) {
1901 MGET(m, M_DONTWAIT, MT_DATA);
1902 if (m == NULL) {
1903 hifnstats.hst_nomem_mbuf++;
1904 err = dma->cmdu ? ERESTART : ENOMEM;
1905 m_freem(m0);
1906 goto err_srcmap;
1907 }
1908 len = MLEN;
1909 if (totlen >= MINCLSIZE) {
1910 MCLGET(m, M_DONTWAIT);
1911 if ((m->m_flags & M_EXT) == 0) {
1912 hifnstats.hst_nomem_mcl++;
1913 err = dma->cmdu ? ERESTART : ENOMEM;
1914 mlast->m_next = m;
1915 m_freem(m0);
1916 goto err_srcmap;
1917 }
1918 len = MCLBYTES;
1919 }
1920
1921 m->m_len = len;
1922 m0->m_pkthdr.len += len;
1923 totlen -= len;
1924
1925 mlast->m_next = m;
1926 mlast = m;
1927 }
1928 cmd->dst_m = m0;
1929 } else {
1930 err = EINVAL;
1931 goto err_srcmap;
1932 }
1933 }
1934
1935 if (cmd->dst_map == NULL) {
1936 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &cmd->dst_map)) {
1937 hifnstats.hst_nomem_map++;
1938 err = ENOMEM;
1939 goto err_srcmap;
1940 }
1941 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1942 err = bus_dmamap_load_mbuf(sc->sc_dmat, cmd->dst_map,
1943 cmd->dst_m, hifn_op_cb2, &cmd->dst, BUS_DMA_NOWAIT);
1944 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1945 err = bus_dmamap_load_uio(sc->sc_dmat, cmd->dst_map,
1946 cmd->dst_io, hifn_op_cb2, &cmd->dst,
1947 BUS_DMA_NOWAIT);
1948 } else {
1949 err = bus_dmamap_load(sc->sc_dmat, cmd->dst_map,
1950 cmd->dst_buf, crp->crp_ilen, hifn_op_cb1, &cmd->dst,
1951 BUS_DMA_NOWAIT);
1952 }
1953 if (err != 0) {
1954 hifnstats.hst_nomem_map++;
1955 err = ENOMEM;
1956 goto err_dstmap1;
1957 }
1958 }
1959
1960 #ifdef HIFN_DEBUG
1961 if (hifn_debug) {
1962 device_printf(sc->sc_dev,
1963 "Entering cmd: stat %8x ien %8x u %d/%d/%d/%d n %d/%d\n",
1964 READ_REG_1(sc, HIFN_1_DMA_CSR),
1965 READ_REG_1(sc, HIFN_1_DMA_IER),
1966 dma->cmdu, dma->srcu, dma->dstu, dma->resu,
1967 cmd->src_nsegs, cmd->dst_nsegs);
1968 }
1969 #endif
1970
1971 if (cmd->src_map == cmd->dst_map) {
1972 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
1973 BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
1974 } else {
1975 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
1976 BUS_DMASYNC_PREWRITE);
1977 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
1978 BUS_DMASYNC_PREREAD);
1979 }
1980
1981 /*
1982 * need N src, and N dst
1983 */
1984 if ((dma->srcu + cmd->src_nsegs) > HIFN_D_SRC_RSIZE ||
1985 (dma->dstu + cmd->dst_nsegs + 1) > HIFN_D_DST_RSIZE) {
1986 #ifdef HIFN_DEBUG
1987 if (hifn_debug) {
1988 device_printf(sc->sc_dev,
1989 "src/dst exhaustion, srcu %u+%u dstu %u+%u\n",
1990 dma->srcu, cmd->src_nsegs,
1991 dma->dstu, cmd->dst_nsegs);
1992 }
1993 #endif
1994 hifnstats.hst_nomem_sd++;
1995 err = ERESTART;
1996 goto err_dstmap;
1997 }
1998
1999 if (dma->cmdi == HIFN_D_CMD_RSIZE) {
2000 dma->cmdi = 0;
2001 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID |
2002 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
2003 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
2004 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
2005 }
2006 cmdi = dma->cmdi++;
2007 cmdlen = hifn_write_command(cmd, dma->command_bufs[cmdi]);
2008 HIFN_CMD_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE);
2009
2010 /* .p for command/result already set */
2011 dma->cmdr[cmdi].l = htole32(cmdlen | HIFN_D_VALID | HIFN_D_LAST |
2012 HIFN_D_MASKDONEIRQ);
2013 HIFN_CMDR_SYNC(sc, cmdi,
2014 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
2015 dma->cmdu++;
2016 if (sc->sc_c_busy == 0) {
2017 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA);
2018 sc->sc_c_busy = 1;
2019 }
2020
2021 /*
2022 * We don't worry about missing an interrupt (which a "command wait"
2023 * interrupt salvages us from), unless there is more than one command
2024 * in the queue.
2025 */
2026 if (dma->cmdu > 1) {
2027 sc->sc_dmaier |= HIFN_DMAIER_C_WAIT;
2028 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
2029 }
2030
2031 hifnstats.hst_ipackets++;
2032 hifnstats.hst_ibytes += cmd->src_mapsize;
2033
2034 hifn_dmamap_load_src(sc, cmd);
2035 if (sc->sc_s_busy == 0) {
2036 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA);
2037 sc->sc_s_busy = 1;
2038 }
2039
2040 /*
2041 * Unlike other descriptors, we don't mask done interrupt from
2042 * result descriptor.
2043 */
2044 #ifdef HIFN_DEBUG
2045 if (hifn_debug)
2046 printf("load res\n");
2047 #endif
2048 if (dma->resi == HIFN_D_RES_RSIZE) {
2049 dma->resi = 0;
2050 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID |
2051 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
2052 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
2053 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2054 }
2055 resi = dma->resi++;
2056 KASSERT(dma->hifn_commands[resi] == NULL,
2057 ("hifn_crypto: command slot %u busy", resi));
2058 dma->hifn_commands[resi] = cmd;
2059 HIFN_RES_SYNC(sc, resi, BUS_DMASYNC_PREREAD);
2060 if ((hint & CRYPTO_HINT_MORE) && sc->sc_curbatch < hifn_maxbatch) {
2061 dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
2062 HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ);
2063 sc->sc_curbatch++;
2064 if (sc->sc_curbatch > hifnstats.hst_maxbatch)
2065 hifnstats.hst_maxbatch = sc->sc_curbatch;
2066 hifnstats.hst_totbatch++;
2067 } else {
2068 dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
2069 HIFN_D_VALID | HIFN_D_LAST);
2070 sc->sc_curbatch = 0;
2071 }
2072 HIFN_RESR_SYNC(sc, resi,
2073 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2074 dma->resu++;
2075 if (sc->sc_r_busy == 0) {
2076 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA);
2077 sc->sc_r_busy = 1;
2078 }
2079
2080 if (cmd->sloplen)
2081 cmd->slopidx = resi;
2082
2083 hifn_dmamap_load_dst(sc, cmd);
2084
2085 if (sc->sc_d_busy == 0) {
2086 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA);
2087 sc->sc_d_busy = 1;
2088 }
2089
2090 #ifdef HIFN_DEBUG
2091 if (hifn_debug) {
2092 device_printf(sc->sc_dev, "command: stat %8x ier %8x\n",
2093 READ_REG_1(sc, HIFN_1_DMA_CSR),
2094 READ_REG_1(sc, HIFN_1_DMA_IER));
2095 }
2096 #endif
2097
2098 sc->sc_active = 5;
2099 HIFN_UNLOCK(sc);
2100 KASSERT(err == 0, ("hifn_crypto: success with error %u", err));
2101 return (err); /* success */
2102
2103 err_dstmap:
2104 if (cmd->src_map != cmd->dst_map)
2105 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
2106 err_dstmap1:
2107 if (cmd->src_map != cmd->dst_map)
2108 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
2109 err_srcmap:
2110 if (crp->crp_flags & CRYPTO_F_IMBUF) {
2111 if (cmd->src_m != cmd->dst_m)
2112 m_freem(cmd->dst_m);
2113 }
2114 bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
2115 err_srcmap1:
2116 bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
2117 HIFN_UNLOCK(sc);
2118 return (err);
2119 }
2120
2121 static void
2122 hifn_tick(void* vsc)
2123 {
2124 struct hifn_softc *sc = vsc;
2125
2126 HIFN_LOCK(sc);
2127 if (sc->sc_active == 0) {
2128 struct hifn_dma *dma = sc->sc_dma;
2129 u_int32_t r = 0;
2130
2131 if (dma->cmdu == 0 && sc->sc_c_busy) {
2132 sc->sc_c_busy = 0;
2133 r |= HIFN_DMACSR_C_CTRL_DIS;
2134 }
2135 if (dma->srcu == 0 && sc->sc_s_busy) {
2136 sc->sc_s_busy = 0;
2137 r |= HIFN_DMACSR_S_CTRL_DIS;
2138 }
2139 if (dma->dstu == 0 && sc->sc_d_busy) {
2140 sc->sc_d_busy = 0;
2141 r |= HIFN_DMACSR_D_CTRL_DIS;
2142 }
2143 if (dma->resu == 0 && sc->sc_r_busy) {
2144 sc->sc_r_busy = 0;
2145 r |= HIFN_DMACSR_R_CTRL_DIS;
2146 }
2147 if (r)
2148 WRITE_REG_1(sc, HIFN_1_DMA_CSR, r);
2149 } else
2150 sc->sc_active--;
2151 HIFN_UNLOCK(sc);
2152 callout_reset(&sc->sc_tickto, hz, hifn_tick, sc);
2153 }
2154
2155 static void
2156 hifn_intr(void *arg)
2157 {
2158 struct hifn_softc *sc = arg;
2159 struct hifn_dma *dma;
2160 u_int32_t dmacsr, restart;
2161 int i, u;
2162
2163 dmacsr = READ_REG_1(sc, HIFN_1_DMA_CSR);
2164
2165 /* Nothing in the DMA unit interrupted */
2166 if ((dmacsr & sc->sc_dmaier) == 0)
2167 return;
2168
2169 HIFN_LOCK(sc);
2170
2171 dma = sc->sc_dma;
2172
2173 #ifdef HIFN_DEBUG
2174 if (hifn_debug) {
2175 device_printf(sc->sc_dev,
2176 "irq: stat %08x ien %08x damier %08x i %d/%d/%d/%d k %d/%d/%d/%d u %d/%d/%d/%d\n",
2177 dmacsr, READ_REG_1(sc, HIFN_1_DMA_IER), sc->sc_dmaier,
2178 dma->cmdi, dma->srci, dma->dsti, dma->resi,
2179 dma->cmdk, dma->srck, dma->dstk, dma->resk,
2180 dma->cmdu, dma->srcu, dma->dstu, dma->resu);
2181 }
2182 #endif
2183
2184 WRITE_REG_1(sc, HIFN_1_DMA_CSR, dmacsr & sc->sc_dmaier);
2185
2186 if ((sc->sc_flags & HIFN_HAS_PUBLIC) &&
2187 (dmacsr & HIFN_DMACSR_PUBDONE))
2188 WRITE_REG_1(sc, HIFN_1_PUB_STATUS,
2189 READ_REG_1(sc, HIFN_1_PUB_STATUS) | HIFN_PUBSTS_DONE);
2190
2191 restart = dmacsr & (HIFN_DMACSR_D_OVER | HIFN_DMACSR_R_OVER);
2192 if (restart)
2193 device_printf(sc->sc_dev, "overrun %x\n", dmacsr);
2194
2195 if (sc->sc_flags & HIFN_IS_7811) {
2196 if (dmacsr & HIFN_DMACSR_ILLR)
2197 device_printf(sc->sc_dev, "illegal read\n");
2198 if (dmacsr & HIFN_DMACSR_ILLW)
2199 device_printf(sc->sc_dev, "illegal write\n");
2200 }
2201
2202 restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
2203 HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
2204 if (restart) {
2205 device_printf(sc->sc_dev, "abort, resetting.\n");
2206 hifnstats.hst_abort++;
2207 hifn_abort(sc);
2208 HIFN_UNLOCK(sc);
2209 return;
2210 }
2211
2212 if ((dmacsr & HIFN_DMACSR_C_WAIT) && (dma->cmdu == 0)) {
2213 /*
2214 * If no slots to process and we receive a "waiting on
2215 * command" interrupt, we disable the "waiting on command"
2216 * (by clearing it).
2217 */
2218 sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
2219 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
2220 }
2221
2222 /* clear the rings */
2223 i = dma->resk; u = dma->resu;
2224 while (u != 0) {
2225 HIFN_RESR_SYNC(sc, i,
2226 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2227 if (dma->resr[i].l & htole32(HIFN_D_VALID)) {
2228 HIFN_RESR_SYNC(sc, i,
2229 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2230 break;
2231 }
2232
2233 if (i != HIFN_D_RES_RSIZE) {
2234 struct hifn_command *cmd;
2235 u_int8_t *macbuf = NULL;
2236
2237 HIFN_RES_SYNC(sc, i, BUS_DMASYNC_POSTREAD);
2238 cmd = dma->hifn_commands[i];
2239 KASSERT(cmd != NULL,
2240 ("hifn_intr: null command slot %u", i));
2241 dma->hifn_commands[i] = NULL;
2242
2243 if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
2244 macbuf = dma->result_bufs[i];
2245 macbuf += 12;
2246 }
2247
2248 hifn_callback(sc, cmd, macbuf);
2249 hifnstats.hst_opackets++;
2250 u--;
2251 }
2252
2253 if (++i == (HIFN_D_RES_RSIZE + 1))
2254 i = 0;
2255 }
2256 dma->resk = i; dma->resu = u;
2257
2258 i = dma->srck; u = dma->srcu;
2259 while (u != 0) {
2260 if (i == HIFN_D_SRC_RSIZE)
2261 i = 0;
2262 HIFN_SRCR_SYNC(sc, i,
2263 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2264 if (dma->srcr[i].l & htole32(HIFN_D_VALID)) {
2265 HIFN_SRCR_SYNC(sc, i,
2266 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2267 break;
2268 }
2269 i++, u--;
2270 }
2271 dma->srck = i; dma->srcu = u;
2272
2273 i = dma->cmdk; u = dma->cmdu;
2274 while (u != 0) {
2275 HIFN_CMDR_SYNC(sc, i,
2276 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2277 if (dma->cmdr[i].l & htole32(HIFN_D_VALID)) {
2278 HIFN_CMDR_SYNC(sc, i,
2279 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2280 break;
2281 }
2282 if (i != HIFN_D_CMD_RSIZE) {
2283 u--;
2284 HIFN_CMD_SYNC(sc, i, BUS_DMASYNC_POSTWRITE);
2285 }
2286 if (++i == (HIFN_D_CMD_RSIZE + 1))
2287 i = 0;
2288 }
2289 dma->cmdk = i; dma->cmdu = u;
2290
2291 HIFN_UNLOCK(sc);
2292
2293 if (sc->sc_needwakeup) { /* XXX check high watermark */
2294 int wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ);
2295 #ifdef HIFN_DEBUG
2296 if (hifn_debug)
2297 device_printf(sc->sc_dev,
2298 "wakeup crypto (%x) u %d/%d/%d/%d\n",
2299 sc->sc_needwakeup,
2300 dma->cmdu, dma->srcu, dma->dstu, dma->resu);
2301 #endif
2302 sc->sc_needwakeup &= ~wakeup;
2303 crypto_unblock(sc->sc_cid, wakeup);
2304 }
2305 }
2306
2307 /*
2308 * Allocate a new 'session' and return an encoded session id. 'sidp'
2309 * contains our registration id, and should contain an encoded session
2310 * id on successful allocation.
2311 */
2312 static int
2313 hifn_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri)
2314 {
2315 struct cryptoini *c;
2316 struct hifn_softc *sc = arg;
2317 int mac = 0, cry = 0, sesn;
2318 struct hifn_session *ses = NULL;
2319
2320 KASSERT(sc != NULL, ("hifn_newsession: null softc"));
2321 if (sidp == NULL || cri == NULL || sc == NULL)
2322 return (EINVAL);
2323
2324 if (sc->sc_sessions == NULL) {
2325 ses = sc->sc_sessions = (struct hifn_session *)malloc(
2326 sizeof(*ses), M_DEVBUF, M_NOWAIT);
2327 if (ses == NULL)
2328 return (ENOMEM);
2329 sesn = 0;
2330 sc->sc_nsessions = 1;
2331 } else {
2332 for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
2333 if (!sc->sc_sessions[sesn].hs_used) {
2334 ses = &sc->sc_sessions[sesn];
2335 break;
2336 }
2337 }
2338
2339 if (ses == NULL) {
2340 sesn = sc->sc_nsessions;
2341 ses = (struct hifn_session *)malloc((sesn + 1) *
2342 sizeof(*ses), M_DEVBUF, M_NOWAIT);
2343 if (ses == NULL)
2344 return (ENOMEM);
2345 bcopy(sc->sc_sessions, ses, sesn * sizeof(*ses));
2346 bzero(sc->sc_sessions, sesn * sizeof(*ses));
2347 free(sc->sc_sessions, M_DEVBUF);
2348 sc->sc_sessions = ses;
2349 ses = &sc->sc_sessions[sesn];
2350 sc->sc_nsessions++;
2351 }
2352 }
2353 bzero(ses, sizeof(*ses));
2354 ses->hs_used = 1;
2355
2356 for (c = cri; c != NULL; c = c->cri_next) {
2357 switch (c->cri_alg) {
2358 case CRYPTO_MD5:
2359 case CRYPTO_SHA1:
2360 case CRYPTO_MD5_HMAC:
2361 case CRYPTO_SHA1_HMAC:
2362 if (mac)
2363 return (EINVAL);
2364 mac = 1;
2365 ses->hs_mlen = c->cri_mlen;
2366 if (ses->hs_mlen == 0) {
2367 switch (c->cri_alg) {
2368 case CRYPTO_MD5:
2369 case CRYPTO_MD5_HMAC:
2370 ses->hs_mlen = 16;
2371 break;
2372 case CRYPTO_SHA1:
2373 case CRYPTO_SHA1_HMAC:
2374 ses->hs_mlen = 20;
2375 break;
2376 }
2377 }
2378 break;
2379 case CRYPTO_DES_CBC:
2380 case CRYPTO_3DES_CBC:
2381 case CRYPTO_AES_CBC:
2382 /* XXX this may read fewer, does it matter? */
2383 read_random(ses->hs_iv,
2384 c->cri_alg == CRYPTO_AES_CBC ?
2385 HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
2386 /*FALLTHROUGH*/
2387 case CRYPTO_ARC4:
2388 if (cry)
2389 return (EINVAL);
2390 cry = 1;
2391 break;
2392 default:
2393 return (EINVAL);
2394 }
2395 }
2396 if (mac == 0 && cry == 0)
2397 return (EINVAL);
2398
2399 *sidp = HIFN_SID(device_get_unit(sc->sc_dev), sesn);
2400
2401 return (0);
2402 }
2403
2404 /*
2405 * Deallocate a session.
2406 * XXX this routine should run a zero'd mac/encrypt key into context ram.
2407 * XXX to blow away any keys already stored there.
2408 */
2409 static int
2410 hifn_freesession(void *arg, u_int64_t tid)
2411 {
2412 struct hifn_softc *sc = arg;
2413 int session;
2414 u_int32_t sid = CRYPTO_SESID2LID(tid);
2415
2416 KASSERT(sc != NULL, ("hifn_freesession: null softc"));
2417 if (sc == NULL)
2418 return (EINVAL);
2419
2420 session = HIFN_SESSION(sid);
2421 if (session >= sc->sc_nsessions)
2422 return (EINVAL);
2423
2424 bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session]));
2425 return (0);
2426 }
2427
2428 static int
2429 hifn_process(void *arg, struct cryptop *crp, int hint)
2430 {
2431 struct hifn_softc *sc = arg;
2432 struct hifn_command *cmd = NULL;
2433 int session, err, ivlen;
2434 struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
2435
2436 if (crp == NULL || crp->crp_callback == NULL) {
2437 hifnstats.hst_invalid++;
2438 return (EINVAL);
2439 }
2440 session = HIFN_SESSION(crp->crp_sid);
2441
2442 if (sc == NULL || session >= sc->sc_nsessions) {
2443 err = EINVAL;
2444 goto errout;
2445 }
2446
2447 cmd = malloc(sizeof(struct hifn_command), M_DEVBUF, M_NOWAIT | M_ZERO);
2448 if (cmd == NULL) {
2449 hifnstats.hst_nomem++;
2450 err = ENOMEM;
2451 goto errout;
2452 }
2453
2454 if (crp->crp_flags & CRYPTO_F_IMBUF) {
2455 cmd->src_m = (struct mbuf *)crp->crp_buf;
2456 cmd->dst_m = (struct mbuf *)crp->crp_buf;
2457 } else if (crp->crp_flags & CRYPTO_F_IOV) {
2458 cmd->src_io = (struct uio *)crp->crp_buf;
2459 cmd->dst_io = (struct uio *)crp->crp_buf;
2460 } else {
2461 cmd->src_buf = (void *)crp->crp_buf;
2462 cmd->dst_buf = (void *)crp->crp_buf;
2463 }
2464
2465 crd1 = crp->crp_desc;
2466 if (crd1 == NULL) {
2467 err = EINVAL;
2468 goto errout;
2469 }
2470 crd2 = crd1->crd_next;
2471
2472 if (crd2 == NULL) {
2473 if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
2474 crd1->crd_alg == CRYPTO_SHA1_HMAC ||
2475 crd1->crd_alg == CRYPTO_SHA1 ||
2476 crd1->crd_alg == CRYPTO_MD5) {
2477 maccrd = crd1;
2478 enccrd = NULL;
2479 } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
2480 crd1->crd_alg == CRYPTO_3DES_CBC ||
2481 crd1->crd_alg == CRYPTO_AES_CBC ||
2482 crd1->crd_alg == CRYPTO_ARC4) {
2483 if ((crd1->crd_flags & CRD_F_ENCRYPT) == 0)
2484 cmd->base_masks |= HIFN_BASE_CMD_DECODE;
2485 maccrd = NULL;
2486 enccrd = crd1;
2487 } else {
2488 err = EINVAL;
2489 goto errout;
2490 }
2491 } else {
2492 if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
2493 crd1->crd_alg == CRYPTO_SHA1_HMAC ||
2494 crd1->crd_alg == CRYPTO_MD5 ||
2495 crd1->crd_alg == CRYPTO_SHA1) &&
2496 (crd2->crd_alg == CRYPTO_DES_CBC ||
2497 crd2->crd_alg == CRYPTO_3DES_CBC ||
2498 crd2->crd_alg == CRYPTO_AES_CBC ||
2499 crd2->crd_alg == CRYPTO_ARC4) &&
2500 ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
2501 cmd->base_masks = HIFN_BASE_CMD_DECODE;
2502 maccrd = crd1;
2503 enccrd = crd2;
2504 } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
2505 crd1->crd_alg == CRYPTO_ARC4 ||
2506 crd1->crd_alg == CRYPTO_3DES_CBC ||
2507 crd1->crd_alg == CRYPTO_AES_CBC) &&
2508 (crd2->crd_alg == CRYPTO_MD5_HMAC ||
2509 crd2->crd_alg == CRYPTO_SHA1_HMAC ||
2510 crd2->crd_alg == CRYPTO_MD5 ||
2511 crd2->crd_alg == CRYPTO_SHA1) &&
2512 (crd1->crd_flags & CRD_F_ENCRYPT)) {
2513 enccrd = crd1;
2514 maccrd = crd2;
2515 } else {
2516 /*
2517 * We cannot order the 7751 as requested
2518 */
2519 err = EINVAL;
2520 goto errout;
2521 }
2522 }
2523
2524 if (enccrd) {
2525 cmd->enccrd = enccrd;
2526 cmd->base_masks |= HIFN_BASE_CMD_CRYPT;
2527 switch (enccrd->crd_alg) {
2528 case CRYPTO_ARC4:
2529 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_RC4;
2530 break;
2531 case CRYPTO_DES_CBC:
2532 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_DES |
2533 HIFN_CRYPT_CMD_MODE_CBC |
2534 HIFN_CRYPT_CMD_NEW_IV;
2535 break;
2536 case CRYPTO_3DES_CBC:
2537 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_3DES |
2538 HIFN_CRYPT_CMD_MODE_CBC |
2539 HIFN_CRYPT_CMD_NEW_IV;
2540 break;
2541 case CRYPTO_AES_CBC:
2542 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_AES |
2543 HIFN_CRYPT_CMD_MODE_CBC |
2544 HIFN_CRYPT_CMD_NEW_IV;
2545 break;
2546 default:
2547 err = EINVAL;
2548 goto errout;
2549 }
2550 if (enccrd->crd_alg != CRYPTO_ARC4) {
2551 ivlen = ((enccrd->crd_alg == CRYPTO_AES_CBC) ?
2552 HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
2553 if (enccrd->crd_flags & CRD_F_ENCRYPT) {
2554 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
2555 bcopy(enccrd->crd_iv, cmd->iv, ivlen);
2556 else
2557 bcopy(sc->sc_sessions[session].hs_iv,
2558 cmd->iv, ivlen);
2559
2560 if ((enccrd->crd_flags & CRD_F_IV_PRESENT)
2561 == 0) {
2562 crypto_copyback(crp->crp_flags,
2563 crp->crp_buf, enccrd->crd_inject,
2564 ivlen, cmd->iv);
2565 }
2566 } else {
2567 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
2568 bcopy(enccrd->crd_iv, cmd->iv, ivlen);
2569 else {
2570 crypto_copydata(crp->crp_flags,
2571 crp->crp_buf, enccrd->crd_inject,
2572 ivlen, cmd->iv);
2573 }
2574 }
2575 }
2576
2577 if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT)
2578 cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
2579 cmd->ck = enccrd->crd_key;
2580 cmd->cklen = enccrd->crd_klen >> 3;
2581 cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
2582
2583 /*
2584 * Need to specify the size for the AES key in the masks.
2585 */
2586 if ((cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) ==
2587 HIFN_CRYPT_CMD_ALG_AES) {
2588 switch (cmd->cklen) {
2589 case 16:
2590 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_128;
2591 break;
2592 case 24:
2593 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_192;
2594 break;
2595 case 32:
2596 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_256;
2597 break;
2598 default:
2599 err = EINVAL;
2600 goto errout;
2601 }
2602 }
2603 }
2604
2605 if (maccrd) {
2606 cmd->maccrd = maccrd;
2607 cmd->base_masks |= HIFN_BASE_CMD_MAC;
2608
2609 switch (maccrd->crd_alg) {
2610 case CRYPTO_MD5:
2611 cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
2612 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
2613 HIFN_MAC_CMD_POS_IPSEC;
2614 break;
2615 case CRYPTO_MD5_HMAC:
2616 cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
2617 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
2618 HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
2619 break;
2620 case CRYPTO_SHA1:
2621 cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
2622 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
2623 HIFN_MAC_CMD_POS_IPSEC;
2624 break;
2625 case CRYPTO_SHA1_HMAC:
2626 cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
2627 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
2628 HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
2629 break;
2630 }
2631
2632 if (maccrd->crd_alg == CRYPTO_SHA1_HMAC ||
2633 maccrd->crd_alg == CRYPTO_MD5_HMAC) {
2634 cmd->mac_masks |= HIFN_MAC_CMD_NEW_KEY;
2635 bcopy(maccrd->crd_key, cmd->mac, maccrd->crd_klen >> 3);
2636 bzero(cmd->mac + (maccrd->crd_klen >> 3),
2637 HIFN_MAC_KEY_LENGTH - (maccrd->crd_klen >> 3));
2638 }
2639 }
2640
2641 cmd->crp = crp;
2642 cmd->session_num = session;
2643 cmd->softc = sc;
2644
2645 err = hifn_crypto(sc, cmd, crp, hint);
2646 if (!err) {
2647 return 0;
2648 } else if (err == ERESTART) {
2649 /*
2650 * There weren't enough resources to dispatch the request
2651 * to the part. Notify the caller so they'll requeue this
2652 * request and resubmit it again soon.
2653 */
2654 #ifdef HIFN_DEBUG
2655 if (hifn_debug)
2656 device_printf(sc->sc_dev, "requeue request\n");
2657 #endif
2658 free(cmd, M_DEVBUF);
2659 sc->sc_needwakeup |= CRYPTO_SYMQ;
2660 return (err);
2661 }
2662
2663 errout:
2664 if (cmd != NULL)
2665 free(cmd, M_DEVBUF);
2666 if (err == EINVAL)
2667 hifnstats.hst_invalid++;
2668 else
2669 hifnstats.hst_nomem++;
2670 crp->crp_etype = err;
2671 crypto_done(crp);
2672 return (err);
2673 }
2674
2675 static void
2676 hifn_abort(struct hifn_softc *sc)
2677 {
2678 struct hifn_dma *dma = sc->sc_dma;
2679 struct hifn_command *cmd;
2680 struct cryptop *crp;
2681 int i, u;
2682
2683 i = dma->resk; u = dma->resu;
2684 while (u != 0) {
2685 cmd = dma->hifn_commands[i];
2686 KASSERT(cmd != NULL, ("hifn_abort: null command slot %u", i));
2687 dma->hifn_commands[i] = NULL;
2688 crp = cmd->crp;
2689
2690 if ((dma->resr[i].l & htole32(HIFN_D_VALID)) == 0) {
2691 /* Salvage what we can. */
2692 u_int8_t *macbuf;
2693
2694 if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
2695 macbuf = dma->result_bufs[i];
2696 macbuf += 12;
2697 } else
2698 macbuf = NULL;
2699 hifnstats.hst_opackets++;
2700 hifn_callback(sc, cmd, macbuf);
2701 } else {
2702 if (cmd->src_map == cmd->dst_map) {
2703 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2704 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
2705 } else {
2706 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2707 BUS_DMASYNC_POSTWRITE);
2708 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
2709 BUS_DMASYNC_POSTREAD);
2710 }
2711
2712 if (cmd->src_m != cmd->dst_m) {
2713 m_freem(cmd->src_m);
2714 crp->crp_buf = (caddr_t)cmd->dst_m;
2715 }
2716
2717 /* non-shared buffers cannot be restarted */
2718 if (cmd->src_map != cmd->dst_map) {
2719 /*
2720 * XXX should be EAGAIN, delayed until
2721 * after the reset.
2722 */
2723 crp->crp_etype = ENOMEM;
2724 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
2725 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
2726 } else
2727 crp->crp_etype = ENOMEM;
2728
2729 bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
2730 bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
2731
2732 free(cmd, M_DEVBUF);
2733 if (crp->crp_etype != EAGAIN)
2734 crypto_done(crp);
2735 }
2736
2737 if (++i == HIFN_D_RES_RSIZE)
2738 i = 0;
2739 u--;
2740 }
2741 dma->resk = i; dma->resu = u;
2742
2743 hifn_reset_board(sc, 1);
2744 hifn_init_dma(sc);
2745 hifn_init_pci_registers(sc);
2746 }
2747
2748 static void
2749 hifn_callback(struct hifn_softc *sc, struct hifn_command *cmd, u_int8_t *macbuf)
2750 {
2751 struct hifn_dma *dma = sc->sc_dma;
2752 struct cryptop *crp = cmd->crp;
2753 struct cryptodesc *crd;
2754 struct mbuf *m;
2755 int totlen, i, u, ivlen;
2756
2757 if (cmd->src_map == cmd->dst_map) {
2758 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2759 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
2760 } else {
2761 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
2762 BUS_DMASYNC_POSTWRITE);
2763 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
2764 BUS_DMASYNC_POSTREAD);
2765 }
2766
2767 if (crp->crp_flags & CRYPTO_F_IMBUF) {
2768 if (cmd->src_m != cmd->dst_m) {
2769 crp->crp_buf = (caddr_t)cmd->dst_m;
2770 totlen = cmd->src_mapsize;
2771 for (m = cmd->dst_m; m != NULL; m = m->m_next) {
2772 if (totlen < m->m_len) {
2773 m->m_len = totlen;
2774 totlen = 0;
2775 } else
2776 totlen -= m->m_len;
2777 }
2778 cmd->dst_m->m_pkthdr.len = cmd->src_m->m_pkthdr.len;
2779 m_freem(cmd->src_m);
2780 }
2781 }
2782
2783 if (cmd->sloplen != 0) {
2784 crypto_copyback(crp->crp_flags, crp->crp_buf,
2785 cmd->src_mapsize - cmd->sloplen, cmd->sloplen,
2786 (caddr_t)&dma->slop[cmd->slopidx]);
2787 }
2788
2789 i = dma->dstk; u = dma->dstu;
2790 while (u != 0) {
2791 if (i == HIFN_D_DST_RSIZE)
2792 i = 0;
2793 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
2794 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2795 if (dma->dstr[i].l & htole32(HIFN_D_VALID)) {
2796 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
2797 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2798 break;
2799 }
2800 i++, u--;
2801 }
2802 dma->dstk = i; dma->dstu = u;
2803
2804 hifnstats.hst_obytes += cmd->dst_mapsize;
2805
2806 if ((cmd->base_masks & (HIFN_BASE_CMD_CRYPT | HIFN_BASE_CMD_DECODE)) ==
2807 HIFN_BASE_CMD_CRYPT) {
2808 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
2809 if (crd->crd_alg != CRYPTO_DES_CBC &&
2810 crd->crd_alg != CRYPTO_3DES_CBC &&
2811 crd->crd_alg != CRYPTO_AES_CBC)
2812 continue;
2813 ivlen = ((crd->crd_alg == CRYPTO_AES_CBC) ?
2814 HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
2815 crypto_copydata(crp->crp_flags, crp->crp_buf,
2816 crd->crd_skip + crd->crd_len - ivlen, ivlen,
2817 cmd->softc->sc_sessions[cmd->session_num].hs_iv);
2818 break;
2819 }
2820 }
2821
2822 if (macbuf != NULL) {
2823 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
2824 int len;
2825
2826 if (crd->crd_alg != CRYPTO_MD5 &&
2827 crd->crd_alg != CRYPTO_SHA1 &&
2828 crd->crd_alg != CRYPTO_MD5_HMAC &&
2829 crd->crd_alg != CRYPTO_SHA1_HMAC) {
2830 continue;
2831 }
2832 len = cmd->softc->sc_sessions[cmd->session_num].hs_mlen;
2833 crypto_copyback(crp->crp_flags, crp->crp_buf,
2834 crd->crd_inject, len, macbuf);
2835 break;
2836 }
2837 }
2838
2839 if (cmd->src_map != cmd->dst_map) {
2840 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
2841 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
2842 }
2843 bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
2844 bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
2845 free(cmd, M_DEVBUF);
2846 crypto_done(crp);
2847 }
2848
2849 /*
2850 * 7811 PB3 rev/2 parts lock-up on burst writes to Group 0
2851 * and Group 1 registers; avoid conditions that could create
2852 * burst writes by doing a read in between the writes.
2853 *
2854 * NB: The read we interpose is always to the same register;
2855 * we do this because reading from an arbitrary (e.g. last)
2856 * register may not always work.
2857 */
2858 static void
2859 hifn_write_reg_0(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
2860 {
2861 if (sc->sc_flags & HIFN_IS_7811) {
2862 if (sc->sc_bar0_lastreg == reg - 4)
2863 bus_space_read_4(sc->sc_st0, sc->sc_sh0, HIFN_0_PUCNFG);
2864 sc->sc_bar0_lastreg = reg;
2865 }
2866 bus_space_write_4(sc->sc_st0, sc->sc_sh0, reg, val);
2867 }
2868
2869 static void
2870 hifn_write_reg_1(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
2871 {
2872 if (sc->sc_flags & HIFN_IS_7811) {
2873 if (sc->sc_bar1_lastreg == reg - 4)
2874 bus_space_read_4(sc->sc_st1, sc->sc_sh1, HIFN_1_REVID);
2875 sc->sc_bar1_lastreg = reg;
2876 }
2877 bus_space_write_4(sc->sc_st1, sc->sc_sh1, reg, val);
2878 }
Cache object: d8917a02e29ec901891049662508c889
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