[kernel] pci_set_mwi depends upon CONFIG_HAVE_PCI_SET_MWI
[openwrt/svn-archive/archive.git] / target / linux / generic-2.6 / files / crypto / ocf / hifn / hifn7751.c
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 __FBSDID("$FreeBSD: src/sys/dev/hifn/hifn7751.c,v 1.40 2007/03/21 03:42:49 sam Exp $");
44 */
45
46 /*
47 * Driver for various Hifn encryption processors.
48 */
49 #ifndef AUTOCONF_INCLUDED
50 #include <linux/config.h>
51 #endif
52 #include <linux/module.h>
53 #include <linux/init.h>
54 #include <linux/list.h>
55 #include <linux/slab.h>
56 #include <linux/wait.h>
57 #include <linux/sched.h>
58 #include <linux/pci.h>
59 #include <linux/delay.h>
60 #include <linux/interrupt.h>
61 #include <linux/spinlock.h>
62 #include <linux/random.h>
63 #include <linux/version.h>
64 #include <linux/skbuff.h>
65 #include <asm/io.h>
66
67 #include <cryptodev.h>
68 #include <uio.h>
69 #include <hifn/hifn7751reg.h>
70 #include <hifn/hifn7751var.h>
71
72 #if 1
73 #define DPRINTF(a...) if (hifn_debug) { \
74 printk("%s: ", sc ? \
75 device_get_nameunit(sc->sc_dev) : "hifn"); \
76 printk(a); \
77 } else
78 #else
79 #define DPRINTF(a...)
80 #endif
81
82 static inline int
83 pci_get_revid(struct pci_dev *dev)
84 {
85 u8 rid = 0;
86 pci_read_config_byte(dev, PCI_REVISION_ID, &rid);
87 return rid;
88 }
89
90 static struct hifn_stats hifnstats;
91
92 #define debug hifn_debug
93 int hifn_debug = 0;
94 module_param(hifn_debug, int, 0644);
95 MODULE_PARM_DESC(hifn_debug, "Enable debug");
96
97 int hifn_maxbatch = 1;
98 module_param(hifn_maxbatch, int, 0644);
99 MODULE_PARM_DESC(hifn_maxbatch, "max ops to batch w/o interrupt");
100
101 int hifn_cache_linesize = 0x10;
102 module_param(hifn_cache_linesize, int, 0444);
103 MODULE_PARM_DESC(hifn_cache_linesize, "PCI config cache line size");
104
105 #ifdef MODULE_PARM
106 char *hifn_pllconfig = NULL;
107 MODULE_PARM(hifn_pllconfig, "s");
108 #else
109 char hifn_pllconfig[32]; /* This setting is RO after loading */
110 module_param_string(hifn_pllconfig, hifn_pllconfig, 32, 0444);
111 #endif
112 MODULE_PARM_DESC(hifn_pllconfig, "PLL config, ie., pci66, ext33, ...");
113
114 #ifdef HIFN_VULCANDEV
115 #include <sys/conf.h>
116 #include <sys/uio.h>
117
118 static struct cdevsw vulcanpk_cdevsw; /* forward declaration */
119 #endif
120
121 /*
122 * Prototypes and count for the pci_device structure
123 */
124 static int hifn_probe(struct pci_dev *dev, const struct pci_device_id *ent);
125 static void hifn_remove(struct pci_dev *dev);
126
127 static int hifn_newsession(device_t, u_int32_t *, struct cryptoini *);
128 static int hifn_freesession(device_t, u_int64_t);
129 static int hifn_process(device_t, struct cryptop *, int);
130
131 static device_method_t hifn_methods = {
132 /* crypto device methods */
133 DEVMETHOD(cryptodev_newsession, hifn_newsession),
134 DEVMETHOD(cryptodev_freesession,hifn_freesession),
135 DEVMETHOD(cryptodev_process, hifn_process),
136 };
137
138 static void hifn_reset_board(struct hifn_softc *, int);
139 static void hifn_reset_puc(struct hifn_softc *);
140 static void hifn_puc_wait(struct hifn_softc *);
141 static int hifn_enable_crypto(struct hifn_softc *);
142 static void hifn_set_retry(struct hifn_softc *sc);
143 static void hifn_init_dma(struct hifn_softc *);
144 static void hifn_init_pci_registers(struct hifn_softc *);
145 static int hifn_sramsize(struct hifn_softc *);
146 static int hifn_dramsize(struct hifn_softc *);
147 static int hifn_ramtype(struct hifn_softc *);
148 static void hifn_sessions(struct hifn_softc *);
149 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
150 static irqreturn_t hifn_intr(int irq, void *arg);
151 #else
152 static irqreturn_t hifn_intr(int irq, void *arg, struct pt_regs *regs);
153 #endif
154 static u_int hifn_write_command(struct hifn_command *, u_int8_t *);
155 static u_int32_t hifn_next_signature(u_int32_t a, u_int cnt);
156 static void hifn_callback(struct hifn_softc *, struct hifn_command *, u_int8_t *);
157 static int hifn_crypto(struct hifn_softc *, struct hifn_command *, struct cryptop *, int);
158 static int hifn_readramaddr(struct hifn_softc *, int, u_int8_t *);
159 static int hifn_writeramaddr(struct hifn_softc *, int, u_int8_t *);
160 static int hifn_dmamap_load_src(struct hifn_softc *, struct hifn_command *);
161 static int hifn_dmamap_load_dst(struct hifn_softc *, struct hifn_command *);
162 static int hifn_init_pubrng(struct hifn_softc *);
163 static void hifn_tick(unsigned long arg);
164 static void hifn_abort(struct hifn_softc *);
165 static void hifn_alloc_slot(struct hifn_softc *, int *, int *, int *, int *);
166
167 static void hifn_write_reg_0(struct hifn_softc *, bus_size_t, u_int32_t);
168 static void hifn_write_reg_1(struct hifn_softc *, bus_size_t, u_int32_t);
169
170 #ifdef CONFIG_OCF_RANDOMHARVEST
171 static int hifn_read_random(void *arg, u_int32_t *buf, int len);
172 #endif
173
174 #define HIFN_MAX_CHIPS 8
175 static struct hifn_softc *hifn_chip_idx[HIFN_MAX_CHIPS];
176
177 static __inline u_int32_t
178 READ_REG_0(struct hifn_softc *sc, bus_size_t reg)
179 {
180 u_int32_t v = readl(sc->sc_bar0 + reg);
181 sc->sc_bar0_lastreg = (bus_size_t) -1;
182 return (v);
183 }
184 #define WRITE_REG_0(sc, reg, val) hifn_write_reg_0(sc, reg, val)
185
186 static __inline u_int32_t
187 READ_REG_1(struct hifn_softc *sc, bus_size_t reg)
188 {
189 u_int32_t v = readl(sc->sc_bar1 + reg);
190 sc->sc_bar1_lastreg = (bus_size_t) -1;
191 return (v);
192 }
193 #define WRITE_REG_1(sc, reg, val) hifn_write_reg_1(sc, reg, val)
194
195 /*
196 * map in a given buffer (great on some arches :-)
197 */
198
199 static int
200 pci_map_uio(struct hifn_softc *sc, struct hifn_operand *buf, struct uio *uio)
201 {
202 struct iovec *iov = uio->uio_iov;
203
204 DPRINTF("%s()\n", __FUNCTION__);
205
206 buf->mapsize = 0;
207 for (buf->nsegs = 0; buf->nsegs < uio->uio_iovcnt; ) {
208 buf->segs[buf->nsegs].ds_addr = pci_map_single(sc->sc_pcidev,
209 iov->iov_base, iov->iov_len,
210 PCI_DMA_BIDIRECTIONAL);
211 buf->segs[buf->nsegs].ds_len = iov->iov_len;
212 buf->mapsize += iov->iov_len;
213 iov++;
214 buf->nsegs++;
215 }
216 /* identify this buffer by the first segment */
217 buf->map = (void *) buf->segs[0].ds_addr;
218 return(0);
219 }
220
221 /*
222 * map in a given sk_buff
223 */
224
225 static int
226 pci_map_skb(struct hifn_softc *sc,struct hifn_operand *buf,struct sk_buff *skb)
227 {
228 int i;
229
230 DPRINTF("%s()\n", __FUNCTION__);
231
232 buf->mapsize = 0;
233
234 buf->segs[0].ds_addr = pci_map_single(sc->sc_pcidev,
235 skb->data, skb_headlen(skb), PCI_DMA_BIDIRECTIONAL);
236 buf->segs[0].ds_len = skb_headlen(skb);
237 buf->mapsize += buf->segs[0].ds_len;
238
239 buf->nsegs = 1;
240
241 for (i = 0; i < skb_shinfo(skb)->nr_frags; ) {
242 buf->segs[buf->nsegs].ds_len = skb_shinfo(skb)->frags[i].size;
243 buf->segs[buf->nsegs].ds_addr = pci_map_single(sc->sc_pcidev,
244 page_address(skb_shinfo(skb)->frags[i].page) +
245 skb_shinfo(skb)->frags[i].page_offset,
246 buf->segs[buf->nsegs].ds_len, PCI_DMA_BIDIRECTIONAL);
247 buf->mapsize += buf->segs[buf->nsegs].ds_len;
248 buf->nsegs++;
249 }
250
251 /* identify this buffer by the first segment */
252 buf->map = (void *) buf->segs[0].ds_addr;
253 return(0);
254 }
255
256 /*
257 * map in a given contiguous buffer
258 */
259
260 static int
261 pci_map_buf(struct hifn_softc *sc,struct hifn_operand *buf, void *b, int len)
262 {
263 DPRINTF("%s()\n", __FUNCTION__);
264
265 buf->mapsize = 0;
266 buf->segs[0].ds_addr = pci_map_single(sc->sc_pcidev,
267 b, len, PCI_DMA_BIDIRECTIONAL);
268 buf->segs[0].ds_len = len;
269 buf->mapsize += buf->segs[0].ds_len;
270 buf->nsegs = 1;
271
272 /* identify this buffer by the first segment */
273 buf->map = (void *) buf->segs[0].ds_addr;
274 return(0);
275 }
276
277 #if 0 /* not needed at this time */
278 static void
279 pci_sync_iov(struct hifn_softc *sc, struct hifn_operand *buf)
280 {
281 int i;
282
283 DPRINTF("%s()\n", __FUNCTION__);
284 for (i = 0; i < buf->nsegs; i++)
285 pci_dma_sync_single_for_cpu(sc->sc_pcidev, buf->segs[i].ds_addr,
286 buf->segs[i].ds_len, PCI_DMA_BIDIRECTIONAL);
287 }
288 #endif
289
290 static void
291 pci_unmap_buf(struct hifn_softc *sc, struct hifn_operand *buf)
292 {
293 int i;
294 DPRINTF("%s()\n", __FUNCTION__);
295 for (i = 0; i < buf->nsegs; i++) {
296 pci_unmap_single(sc->sc_pcidev, buf->segs[i].ds_addr,
297 buf->segs[i].ds_len, PCI_DMA_BIDIRECTIONAL);
298 buf->segs[i].ds_addr = 0;
299 buf->segs[i].ds_len = 0;
300 }
301 buf->nsegs = 0;
302 buf->mapsize = 0;
303 buf->map = 0;
304 }
305
306 static const char*
307 hifn_partname(struct hifn_softc *sc)
308 {
309 /* XXX sprintf numbers when not decoded */
310 switch (pci_get_vendor(sc->sc_pcidev)) {
311 case PCI_VENDOR_HIFN:
312 switch (pci_get_device(sc->sc_pcidev)) {
313 case PCI_PRODUCT_HIFN_6500: return "Hifn 6500";
314 case PCI_PRODUCT_HIFN_7751: return "Hifn 7751";
315 case PCI_PRODUCT_HIFN_7811: return "Hifn 7811";
316 case PCI_PRODUCT_HIFN_7951: return "Hifn 7951";
317 case PCI_PRODUCT_HIFN_7955: return "Hifn 7955";
318 case PCI_PRODUCT_HIFN_7956: return "Hifn 7956";
319 }
320 return "Hifn unknown-part";
321 case PCI_VENDOR_INVERTEX:
322 switch (pci_get_device(sc->sc_pcidev)) {
323 case PCI_PRODUCT_INVERTEX_AEON: return "Invertex AEON";
324 }
325 return "Invertex unknown-part";
326 case PCI_VENDOR_NETSEC:
327 switch (pci_get_device(sc->sc_pcidev)) {
328 case PCI_PRODUCT_NETSEC_7751: return "NetSec 7751";
329 }
330 return "NetSec unknown-part";
331 }
332 return "Unknown-vendor unknown-part";
333 }
334
335 static u_int
336 checkmaxmin(struct pci_dev *dev, const char *what, u_int v, u_int min, u_int max)
337 {
338 struct hifn_softc *sc = pci_get_drvdata(dev);
339 if (v > max) {
340 device_printf(sc->sc_dev, "Warning, %s %u out of range, "
341 "using max %u\n", what, v, max);
342 v = max;
343 } else if (v < min) {
344 device_printf(sc->sc_dev, "Warning, %s %u out of range, "
345 "using min %u\n", what, v, min);
346 v = min;
347 }
348 return v;
349 }
350
351 /*
352 * Select PLL configuration for 795x parts. This is complicated in
353 * that we cannot determine the optimal parameters without user input.
354 * The reference clock is derived from an external clock through a
355 * multiplier. The external clock is either the host bus (i.e. PCI)
356 * or an external clock generator. When using the PCI bus we assume
357 * the clock is either 33 or 66 MHz; for an external source we cannot
358 * tell the speed.
359 *
360 * PLL configuration is done with a string: "pci" for PCI bus, or "ext"
361 * for an external source, followed by the frequency. We calculate
362 * the appropriate multiplier and PLL register contents accordingly.
363 * When no configuration is given we default to "pci66" since that
364 * always will allow the card to work. If a card is using the PCI
365 * bus clock and in a 33MHz slot then it will be operating at half
366 * speed until the correct information is provided.
367 *
368 * We use a default setting of "ext66" because according to Mike Ham
369 * of HiFn, almost every board in existence has an external crystal
370 * populated at 66Mhz. Using PCI can be a problem on modern motherboards,
371 * because PCI33 can have clocks from 0 to 33Mhz, and some have
372 * non-PCI-compliant spread-spectrum clocks, which can confuse the pll.
373 */
374 static void
375 hifn_getpllconfig(struct pci_dev *dev, u_int *pll)
376 {
377 const char *pllspec = hifn_pllconfig;
378 u_int freq, mul, fl, fh;
379 u_int32_t pllconfig;
380 char *nxt;
381
382 if (pllspec == NULL)
383 pllspec = "ext66";
384 fl = 33, fh = 66;
385 pllconfig = 0;
386 if (strncmp(pllspec, "ext", 3) == 0) {
387 pllspec += 3;
388 pllconfig |= HIFN_PLL_REF_SEL;
389 switch (pci_get_device(dev)) {
390 case PCI_PRODUCT_HIFN_7955:
391 case PCI_PRODUCT_HIFN_7956:
392 fl = 20, fh = 100;
393 break;
394 #ifdef notyet
395 case PCI_PRODUCT_HIFN_7954:
396 fl = 20, fh = 66;
397 break;
398 #endif
399 }
400 } else if (strncmp(pllspec, "pci", 3) == 0)
401 pllspec += 3;
402 freq = strtoul(pllspec, &nxt, 10);
403 if (nxt == pllspec)
404 freq = 66;
405 else
406 freq = checkmaxmin(dev, "frequency", freq, fl, fh);
407 /*
408 * Calculate multiplier. We target a Fck of 266 MHz,
409 * allowing only even values, possibly rounded down.
410 * Multipliers > 8 must set the charge pump current.
411 */
412 mul = checkmaxmin(dev, "PLL divisor", (266 / freq) &~ 1, 2, 12);
413 pllconfig |= (mul / 2 - 1) << HIFN_PLL_ND_SHIFT;
414 if (mul > 8)
415 pllconfig |= HIFN_PLL_IS;
416 *pll = pllconfig;
417 }
418
419 /*
420 * Attach an interface that successfully probed.
421 */
422 static int
423 hifn_probe(struct pci_dev *dev, const struct pci_device_id *ent)
424 {
425 struct hifn_softc *sc = NULL;
426 char rbase;
427 u_int16_t ena, rev;
428 int rseg, rc;
429 unsigned long mem_start, mem_len;
430 static int num_chips = 0;
431
432 DPRINTF("%s()\n", __FUNCTION__);
433
434 if (pci_enable_device(dev) < 0)
435 return(-ENODEV);
436
437 #ifdef CONFIG_HAVE_PCI_SET_MWI
438 if (pci_set_mwi(dev))
439 return(-ENODEV);
440 #endif
441
442 if (!dev->irq) {
443 printk("hifn: found device with no IRQ assigned. check BIOS settings!");
444 pci_disable_device(dev);
445 return(-ENODEV);
446 }
447
448 sc = (struct hifn_softc *) kmalloc(sizeof(*sc), GFP_KERNEL);
449 if (!sc)
450 return(-ENOMEM);
451 memset(sc, 0, sizeof(*sc));
452
453 softc_device_init(sc, "hifn", num_chips, hifn_methods);
454
455 sc->sc_pcidev = dev;
456 sc->sc_irq = -1;
457 sc->sc_cid = -1;
458 sc->sc_num = num_chips++;
459 if (sc->sc_num < HIFN_MAX_CHIPS)
460 hifn_chip_idx[sc->sc_num] = sc;
461
462 pci_set_drvdata(sc->sc_pcidev, sc);
463
464 spin_lock_init(&sc->sc_mtx);
465
466 /* XXX handle power management */
467
468 /*
469 * The 7951 and 795x have a random number generator and
470 * public key support; note this.
471 */
472 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
473 (pci_get_device(dev) == PCI_PRODUCT_HIFN_7951 ||
474 pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
475 pci_get_device(dev) == PCI_PRODUCT_HIFN_7956))
476 sc->sc_flags = HIFN_HAS_RNG | HIFN_HAS_PUBLIC;
477 /*
478 * The 7811 has a random number generator and
479 * we also note it's identity 'cuz of some quirks.
480 */
481 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
482 pci_get_device(dev) == PCI_PRODUCT_HIFN_7811)
483 sc->sc_flags |= HIFN_IS_7811 | HIFN_HAS_RNG;
484
485 /*
486 * The 795x parts support AES.
487 */
488 if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
489 (pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
490 pci_get_device(dev) == PCI_PRODUCT_HIFN_7956)) {
491 sc->sc_flags |= HIFN_IS_7956 | HIFN_HAS_AES;
492 /*
493 * Select PLL configuration. This depends on the
494 * bus and board design and must be manually configured
495 * if the default setting is unacceptable.
496 */
497 hifn_getpllconfig(dev, &sc->sc_pllconfig);
498 }
499
500 /*
501 * Setup PCI resources. Note that we record the bus
502 * tag and handle for each register mapping, this is
503 * used by the READ_REG_0, WRITE_REG_0, READ_REG_1,
504 * and WRITE_REG_1 macros throughout the driver.
505 */
506 mem_start = pci_resource_start(sc->sc_pcidev, 0);
507 mem_len = pci_resource_len(sc->sc_pcidev, 0);
508 sc->sc_bar0 = (ocf_iomem_t) ioremap(mem_start, mem_len);
509 if (!sc->sc_bar0) {
510 device_printf(sc->sc_dev, "cannot map bar%d register space\n", 0);
511 goto fail;
512 }
513 sc->sc_bar0_lastreg = (bus_size_t) -1;
514
515 mem_start = pci_resource_start(sc->sc_pcidev, 1);
516 mem_len = pci_resource_len(sc->sc_pcidev, 1);
517 sc->sc_bar1 = (ocf_iomem_t) ioremap(mem_start, mem_len);
518 if (!sc->sc_bar1) {
519 device_printf(sc->sc_dev, "cannot map bar%d register space\n", 1);
520 goto fail;
521 }
522 sc->sc_bar1_lastreg = (bus_size_t) -1;
523
524 /* fix up the bus size */
525 if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
526 device_printf(sc->sc_dev, "No usable DMA configuration, aborting.\n");
527 goto fail;
528 }
529 if (pci_set_consistent_dma_mask(dev, DMA_32BIT_MASK)) {
530 device_printf(sc->sc_dev,
531 "No usable consistent DMA configuration, aborting.\n");
532 goto fail;
533 }
534
535 hifn_set_retry(sc);
536
537 /*
538 * Setup the area where the Hifn DMA's descriptors
539 * and associated data structures.
540 */
541 sc->sc_dma = (struct hifn_dma *) pci_alloc_consistent(dev,
542 sizeof(*sc->sc_dma),
543 &sc->sc_dma_physaddr);
544 if (!sc->sc_dma) {
545 device_printf(sc->sc_dev, "cannot alloc sc_dma\n");
546 goto fail;
547 }
548 bzero(sc->sc_dma, sizeof(*sc->sc_dma));
549
550 /*
551 * Reset the board and do the ``secret handshake''
552 * to enable the crypto support. Then complete the
553 * initialization procedure by setting up the interrupt
554 * and hooking in to the system crypto support so we'll
555 * get used for system services like the crypto device,
556 * IPsec, RNG device, etc.
557 */
558 hifn_reset_board(sc, 0);
559
560 if (hifn_enable_crypto(sc) != 0) {
561 device_printf(sc->sc_dev, "crypto enabling failed\n");
562 goto fail;
563 }
564 hifn_reset_puc(sc);
565
566 hifn_init_dma(sc);
567 hifn_init_pci_registers(sc);
568
569 pci_set_master(sc->sc_pcidev);
570
571 /* XXX can't dynamically determine ram type for 795x; force dram */
572 if (sc->sc_flags & HIFN_IS_7956)
573 sc->sc_drammodel = 1;
574 else if (hifn_ramtype(sc))
575 goto fail;
576
577 if (sc->sc_drammodel == 0)
578 hifn_sramsize(sc);
579 else
580 hifn_dramsize(sc);
581
582 /*
583 * Workaround for NetSec 7751 rev A: half ram size because two
584 * of the address lines were left floating
585 */
586 if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
587 pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751 &&
588 pci_get_revid(dev) == 0x61) /*XXX???*/
589 sc->sc_ramsize >>= 1;
590
591 /*
592 * Arrange the interrupt line.
593 */
594 rc = request_irq(dev->irq, hifn_intr, IRQF_SHARED, "hifn", sc);
595 if (rc) {
596 device_printf(sc->sc_dev, "could not map interrupt: %d\n", rc);
597 goto fail;
598 }
599 sc->sc_irq = dev->irq;
600
601 hifn_sessions(sc);
602
603 /*
604 * NB: Keep only the low 16 bits; this masks the chip id
605 * from the 7951.
606 */
607 rev = READ_REG_1(sc, HIFN_1_REVID) & 0xffff;
608
609 rseg = sc->sc_ramsize / 1024;
610 rbase = 'K';
611 if (sc->sc_ramsize >= (1024 * 1024)) {
612 rbase = 'M';
613 rseg /= 1024;
614 }
615 device_printf(sc->sc_dev, "%s, rev %u, %d%cB %cram",
616 hifn_partname(sc), rev,
617 rseg, rbase, sc->sc_drammodel ? 'd' : 's');
618 if (sc->sc_flags & HIFN_IS_7956)
619 printf(", pll=0x%x<%s clk, %ux mult>",
620 sc->sc_pllconfig,
621 sc->sc_pllconfig & HIFN_PLL_REF_SEL ? "ext" : "pci",
622 2 + 2*((sc->sc_pllconfig & HIFN_PLL_ND) >> 11));
623 printf("\n");
624
625 sc->sc_cid = crypto_get_driverid(softc_get_device(sc),CRYPTOCAP_F_HARDWARE);
626 if (sc->sc_cid < 0) {
627 device_printf(sc->sc_dev, "could not get crypto driver id\n");
628 goto fail;
629 }
630
631 WRITE_REG_0(sc, HIFN_0_PUCNFG,
632 READ_REG_0(sc, HIFN_0_PUCNFG) | HIFN_PUCNFG_CHIPID);
633 ena = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
634
635 switch (ena) {
636 case HIFN_PUSTAT_ENA_2:
637 crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
638 crypto_register(sc->sc_cid, CRYPTO_ARC4, 0, 0);
639 if (sc->sc_flags & HIFN_HAS_AES)
640 crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0);
641 /*FALLTHROUGH*/
642 case HIFN_PUSTAT_ENA_1:
643 crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0);
644 crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0);
645 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0);
646 crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0);
647 crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0);
648 break;
649 }
650
651 if (sc->sc_flags & (HIFN_HAS_PUBLIC | HIFN_HAS_RNG))
652 hifn_init_pubrng(sc);
653
654 init_timer(&sc->sc_tickto);
655 sc->sc_tickto.function = hifn_tick;
656 sc->sc_tickto.data = (unsigned long) sc->sc_num;
657 mod_timer(&sc->sc_tickto, jiffies + HZ);
658
659 return (0);
660
661 fail:
662 if (sc->sc_cid >= 0)
663 crypto_unregister_all(sc->sc_cid);
664 if (sc->sc_irq != -1)
665 free_irq(sc->sc_irq, sc);
666 if (sc->sc_dma) {
667 /* Turn off DMA polling */
668 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
669 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
670
671 pci_free_consistent(sc->sc_pcidev,
672 sizeof(*sc->sc_dma),
673 sc->sc_dma, sc->sc_dma_physaddr);
674 }
675 kfree(sc);
676 return (-ENXIO);
677 }
678
679 /*
680 * Detach an interface that successfully probed.
681 */
682 static void
683 hifn_remove(struct pci_dev *dev)
684 {
685 struct hifn_softc *sc = pci_get_drvdata(dev);
686 unsigned long l_flags;
687
688 DPRINTF("%s()\n", __FUNCTION__);
689
690 KASSERT(sc != NULL, ("hifn_detach: null software carrier!"));
691
692 /* disable interrupts */
693 HIFN_LOCK(sc);
694 WRITE_REG_1(sc, HIFN_1_DMA_IER, 0);
695 HIFN_UNLOCK(sc);
696
697 /*XXX other resources */
698 del_timer_sync(&sc->sc_tickto);
699
700 /* Turn off DMA polling */
701 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
702 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
703
704 crypto_unregister_all(sc->sc_cid);
705
706 free_irq(sc->sc_irq, sc);
707
708 pci_free_consistent(sc->sc_pcidev, sizeof(*sc->sc_dma),
709 sc->sc_dma, sc->sc_dma_physaddr);
710 }
711
712
713 static int
714 hifn_init_pubrng(struct hifn_softc *sc)
715 {
716 int i;
717
718 DPRINTF("%s()\n", __FUNCTION__);
719
720 if ((sc->sc_flags & HIFN_IS_7811) == 0) {
721 /* Reset 7951 public key/rng engine */
722 WRITE_REG_1(sc, HIFN_1_PUB_RESET,
723 READ_REG_1(sc, HIFN_1_PUB_RESET) | HIFN_PUBRST_RESET);
724
725 for (i = 0; i < 100; i++) {
726 DELAY(1000);
727 if ((READ_REG_1(sc, HIFN_1_PUB_RESET) &
728 HIFN_PUBRST_RESET) == 0)
729 break;
730 }
731
732 if (i == 100) {
733 device_printf(sc->sc_dev, "public key init failed\n");
734 return (1);
735 }
736 }
737
738 /* Enable the rng, if available */
739 #ifdef CONFIG_OCF_RANDOMHARVEST
740 if (sc->sc_flags & HIFN_HAS_RNG) {
741 if (sc->sc_flags & HIFN_IS_7811) {
742 u_int32_t r;
743 r = READ_REG_1(sc, HIFN_1_7811_RNGENA);
744 if (r & HIFN_7811_RNGENA_ENA) {
745 r &= ~HIFN_7811_RNGENA_ENA;
746 WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
747 }
748 WRITE_REG_1(sc, HIFN_1_7811_RNGCFG,
749 HIFN_7811_RNGCFG_DEFL);
750 r |= HIFN_7811_RNGENA_ENA;
751 WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
752 } else
753 WRITE_REG_1(sc, HIFN_1_RNG_CONFIG,
754 READ_REG_1(sc, HIFN_1_RNG_CONFIG) |
755 HIFN_RNGCFG_ENA);
756
757 sc->sc_rngfirst = 1;
758 crypto_rregister(sc->sc_cid, hifn_read_random, sc);
759 }
760 #endif
761
762 /* Enable public key engine, if available */
763 if (sc->sc_flags & HIFN_HAS_PUBLIC) {
764 WRITE_REG_1(sc, HIFN_1_PUB_IEN, HIFN_PUBIEN_DONE);
765 sc->sc_dmaier |= HIFN_DMAIER_PUBDONE;
766 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
767 #ifdef HIFN_VULCANDEV
768 sc->sc_pkdev = make_dev(&vulcanpk_cdevsw, 0,
769 UID_ROOT, GID_WHEEL, 0666,
770 "vulcanpk");
771 sc->sc_pkdev->si_drv1 = sc;
772 #endif
773 }
774
775 return (0);
776 }
777
778 #ifdef CONFIG_OCF_RANDOMHARVEST
779 static int
780 hifn_read_random(void *arg, u_int32_t *buf, int len)
781 {
782 struct hifn_softc *sc = (struct hifn_softc *) arg;
783 u_int32_t sts;
784 int i, rc = 0;
785
786 if (len <= 0)
787 return rc;
788
789 if (sc->sc_flags & HIFN_IS_7811) {
790 /* ONLY VALID ON 7811!!!! */
791 for (i = 0; i < 5; i++) {
792 sts = READ_REG_1(sc, HIFN_1_7811_RNGSTS);
793 if (sts & HIFN_7811_RNGSTS_UFL) {
794 device_printf(sc->sc_dev,
795 "RNG underflow: disabling\n");
796 /* DAVIDM perhaps return -1 */
797 break;
798 }
799 if ((sts & HIFN_7811_RNGSTS_RDY) == 0)
800 break;
801
802 /*
803 * There are at least two words in the RNG FIFO
804 * at this point.
805 */
806 if (rc < len)
807 buf[rc++] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
808 if (rc < len)
809 buf[rc++] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
810 }
811 } else
812 buf[rc++] = READ_REG_1(sc, HIFN_1_RNG_DATA);
813
814 /* NB: discard first data read */
815 if (sc->sc_rngfirst) {
816 sc->sc_rngfirst = 0;
817 rc = 0;
818 }
819
820 return(rc);
821 }
822 #endif /* CONFIG_OCF_RANDOMHARVEST */
823
824 static void
825 hifn_puc_wait(struct hifn_softc *sc)
826 {
827 int i;
828 int reg = HIFN_0_PUCTRL;
829
830 if (sc->sc_flags & HIFN_IS_7956) {
831 reg = HIFN_0_PUCTRL2;
832 }
833
834 for (i = 5000; i > 0; i--) {
835 DELAY(1);
836 if (!(READ_REG_0(sc, reg) & HIFN_PUCTRL_RESET))
837 break;
838 }
839 if (!i)
840 device_printf(sc->sc_dev, "proc unit did not reset(0x%x)\n",
841 READ_REG_0(sc, HIFN_0_PUCTRL));
842 }
843
844 /*
845 * Reset the processing unit.
846 */
847 static void
848 hifn_reset_puc(struct hifn_softc *sc)
849 {
850 /* Reset processing unit */
851 int reg = HIFN_0_PUCTRL;
852
853 if (sc->sc_flags & HIFN_IS_7956) {
854 reg = HIFN_0_PUCTRL2;
855 }
856 WRITE_REG_0(sc, reg, HIFN_PUCTRL_DMAENA);
857
858 hifn_puc_wait(sc);
859 }
860
861 /*
862 * Set the Retry and TRDY registers; note that we set them to
863 * zero because the 7811 locks up when forced to retry (section
864 * 3.6 of "Specification Update SU-0014-04". Not clear if we
865 * should do this for all Hifn parts, but it doesn't seem to hurt.
866 */
867 static void
868 hifn_set_retry(struct hifn_softc *sc)
869 {
870 DPRINTF("%s()\n", __FUNCTION__);
871 /* NB: RETRY only responds to 8-bit reads/writes */
872 pci_write_config_byte(sc->sc_pcidev, HIFN_RETRY_TIMEOUT, 0);
873 pci_write_config_dword(sc->sc_pcidev, HIFN_TRDY_TIMEOUT, 0);
874 /* piggy back the cache line setting here */
875 pci_write_config_byte(sc->sc_pcidev, PCI_CACHE_LINE_SIZE, hifn_cache_linesize);
876 }
877
878 /*
879 * Resets the board. Values in the regesters are left as is
880 * from the reset (i.e. initial values are assigned elsewhere).
881 */
882 static void
883 hifn_reset_board(struct hifn_softc *sc, int full)
884 {
885 u_int32_t reg;
886
887 DPRINTF("%s()\n", __FUNCTION__);
888 /*
889 * Set polling in the DMA configuration register to zero. 0x7 avoids
890 * resetting the board and zeros out the other fields.
891 */
892 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
893 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
894
895 /*
896 * Now that polling has been disabled, we have to wait 1 ms
897 * before resetting the board.
898 */
899 DELAY(1000);
900
901 /* Reset the DMA unit */
902 if (full) {
903 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE);
904 DELAY(1000);
905 } else {
906 WRITE_REG_1(sc, HIFN_1_DMA_CNFG,
907 HIFN_DMACNFG_MODE | HIFN_DMACNFG_MSTRESET);
908 hifn_reset_puc(sc);
909 }
910
911 KASSERT(sc->sc_dma != NULL, ("hifn_reset_board: null DMA tag!"));
912 bzero(sc->sc_dma, sizeof(*sc->sc_dma));
913
914 /* Bring dma unit out of reset */
915 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
916 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
917
918 hifn_puc_wait(sc);
919 hifn_set_retry(sc);
920
921 if (sc->sc_flags & HIFN_IS_7811) {
922 for (reg = 0; reg < 1000; reg++) {
923 if (READ_REG_1(sc, HIFN_1_7811_MIPSRST) &
924 HIFN_MIPSRST_CRAMINIT)
925 break;
926 DELAY(1000);
927 }
928 if (reg == 1000)
929 device_printf(sc->sc_dev, ": cram init timeout\n");
930 } else {
931 /* set up DMA configuration register #2 */
932 /* turn off all PK and BAR0 swaps */
933 WRITE_REG_1(sc, HIFN_1_DMA_CNFG2,
934 (3 << HIFN_DMACNFG2_INIT_WRITE_BURST_SHIFT)|
935 (3 << HIFN_DMACNFG2_INIT_READ_BURST_SHIFT)|
936 (2 << HIFN_DMACNFG2_TGT_WRITE_BURST_SHIFT)|
937 (2 << HIFN_DMACNFG2_TGT_READ_BURST_SHIFT));
938 }
939 }
940
941 static u_int32_t
942 hifn_next_signature(u_int32_t a, u_int cnt)
943 {
944 int i;
945 u_int32_t v;
946
947 for (i = 0; i < cnt; i++) {
948
949 /* get the parity */
950 v = a & 0x80080125;
951 v ^= v >> 16;
952 v ^= v >> 8;
953 v ^= v >> 4;
954 v ^= v >> 2;
955 v ^= v >> 1;
956
957 a = (v & 1) ^ (a << 1);
958 }
959
960 return a;
961 }
962
963
964 /*
965 * Checks to see if crypto is already enabled. If crypto isn't enable,
966 * "hifn_enable_crypto" is called to enable it. The check is important,
967 * as enabling crypto twice will lock the board.
968 */
969 static int
970 hifn_enable_crypto(struct hifn_softc *sc)
971 {
972 u_int32_t dmacfg, ramcfg, encl, addr, i;
973 char offtbl[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
974 0x00, 0x00, 0x00, 0x00 };
975
976 DPRINTF("%s()\n", __FUNCTION__);
977
978 ramcfg = READ_REG_0(sc, HIFN_0_PUCNFG);
979 dmacfg = READ_REG_1(sc, HIFN_1_DMA_CNFG);
980
981 /*
982 * The RAM config register's encrypt level bit needs to be set before
983 * every read performed on the encryption level register.
984 */
985 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
986
987 encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
988
989 /*
990 * Make sure we don't re-unlock. Two unlocks kills chip until the
991 * next reboot.
992 */
993 if (encl == HIFN_PUSTAT_ENA_1 || encl == HIFN_PUSTAT_ENA_2) {
994 #ifdef HIFN_DEBUG
995 if (hifn_debug)
996 device_printf(sc->sc_dev,
997 "Strong crypto already enabled!\n");
998 #endif
999 goto report;
1000 }
1001
1002 if (encl != 0 && encl != HIFN_PUSTAT_ENA_0) {
1003 #ifdef HIFN_DEBUG
1004 if (hifn_debug)
1005 device_printf(sc->sc_dev,
1006 "Unknown encryption level 0x%x\n", encl);
1007 #endif
1008 return 1;
1009 }
1010
1011 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_UNLOCK |
1012 HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
1013 DELAY(1000);
1014 addr = READ_REG_1(sc, HIFN_UNLOCK_SECRET1);
1015 DELAY(1000);
1016 WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, 0);
1017 DELAY(1000);
1018
1019 for (i = 0; i <= 12; i++) {
1020 addr = hifn_next_signature(addr, offtbl[i] + 0x101);
1021 WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, addr);
1022
1023 DELAY(1000);
1024 }
1025
1026 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
1027 encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
1028
1029 #ifdef HIFN_DEBUG
1030 if (hifn_debug) {
1031 if (encl != HIFN_PUSTAT_ENA_1 && encl != HIFN_PUSTAT_ENA_2)
1032 device_printf(sc->sc_dev, "Engine is permanently "
1033 "locked until next system reset!\n");
1034 else
1035 device_printf(sc->sc_dev, "Engine enabled "
1036 "successfully!\n");
1037 }
1038 #endif
1039
1040 report:
1041 WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg);
1042 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, dmacfg);
1043
1044 switch (encl) {
1045 case HIFN_PUSTAT_ENA_1:
1046 case HIFN_PUSTAT_ENA_2:
1047 break;
1048 case HIFN_PUSTAT_ENA_0:
1049 default:
1050 device_printf(sc->sc_dev, "disabled\n");
1051 break;
1052 }
1053
1054 return 0;
1055 }
1056
1057 /*
1058 * Give initial values to the registers listed in the "Register Space"
1059 * section of the HIFN Software Development reference manual.
1060 */
1061 static void
1062 hifn_init_pci_registers(struct hifn_softc *sc)
1063 {
1064 DPRINTF("%s()\n", __FUNCTION__);
1065
1066 /* write fixed values needed by the Initialization registers */
1067 WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
1068 WRITE_REG_0(sc, HIFN_0_FIFOCNFG, HIFN_FIFOCNFG_THRESHOLD);
1069 WRITE_REG_0(sc, HIFN_0_PUIER, HIFN_PUIER_DSTOVER);
1070
1071 /* write all 4 ring address registers */
1072 WRITE_REG_1(sc, HIFN_1_DMA_CRAR, sc->sc_dma_physaddr +
1073 offsetof(struct hifn_dma, cmdr[0]));
1074 WRITE_REG_1(sc, HIFN_1_DMA_SRAR, sc->sc_dma_physaddr +
1075 offsetof(struct hifn_dma, srcr[0]));
1076 WRITE_REG_1(sc, HIFN_1_DMA_DRAR, sc->sc_dma_physaddr +
1077 offsetof(struct hifn_dma, dstr[0]));
1078 WRITE_REG_1(sc, HIFN_1_DMA_RRAR, sc->sc_dma_physaddr +
1079 offsetof(struct hifn_dma, resr[0]));
1080
1081 DELAY(2000);
1082
1083 /* write status register */
1084 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1085 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS |
1086 HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_C_CTRL_DIS |
1087 HIFN_DMACSR_D_ABORT | HIFN_DMACSR_D_DONE | HIFN_DMACSR_D_LAST |
1088 HIFN_DMACSR_D_WAIT | HIFN_DMACSR_D_OVER |
1089 HIFN_DMACSR_R_ABORT | HIFN_DMACSR_R_DONE | HIFN_DMACSR_R_LAST |
1090 HIFN_DMACSR_R_WAIT | HIFN_DMACSR_R_OVER |
1091 HIFN_DMACSR_S_ABORT | HIFN_DMACSR_S_DONE | HIFN_DMACSR_S_LAST |
1092 HIFN_DMACSR_S_WAIT |
1093 HIFN_DMACSR_C_ABORT | HIFN_DMACSR_C_DONE | HIFN_DMACSR_C_LAST |
1094 HIFN_DMACSR_C_WAIT |
1095 HIFN_DMACSR_ENGINE |
1096 ((sc->sc_flags & HIFN_HAS_PUBLIC) ?
1097 HIFN_DMACSR_PUBDONE : 0) |
1098 ((sc->sc_flags & HIFN_IS_7811) ?
1099 HIFN_DMACSR_ILLW | HIFN_DMACSR_ILLR : 0));
1100
1101 sc->sc_d_busy = sc->sc_r_busy = sc->sc_s_busy = sc->sc_c_busy = 0;
1102 sc->sc_dmaier |= HIFN_DMAIER_R_DONE | HIFN_DMAIER_C_ABORT |
1103 HIFN_DMAIER_D_OVER | HIFN_DMAIER_R_OVER |
1104 HIFN_DMAIER_S_ABORT | HIFN_DMAIER_D_ABORT | HIFN_DMAIER_R_ABORT |
1105 ((sc->sc_flags & HIFN_IS_7811) ?
1106 HIFN_DMAIER_ILLW | HIFN_DMAIER_ILLR : 0);
1107 sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
1108 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
1109
1110
1111 if (sc->sc_flags & HIFN_IS_7956) {
1112 u_int32_t pll;
1113
1114 WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
1115 HIFN_PUCNFG_TCALLPHASES |
1116 HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32);
1117
1118 /* turn off the clocks and insure bypass is set */
1119 pll = READ_REG_1(sc, HIFN_1_PLL);
1120 pll = (pll &~ (HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL))
1121 | HIFN_PLL_BP | HIFN_PLL_MBSET;
1122 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1123 DELAY(10*1000); /* 10ms */
1124
1125 /* change configuration */
1126 pll = (pll &~ HIFN_PLL_CONFIG) | sc->sc_pllconfig;
1127 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1128 DELAY(10*1000); /* 10ms */
1129
1130 /* disable bypass */
1131 pll &= ~HIFN_PLL_BP;
1132 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1133 /* enable clocks with new configuration */
1134 pll |= HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL;
1135 WRITE_REG_1(sc, HIFN_1_PLL, pll);
1136 } else {
1137 WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
1138 HIFN_PUCNFG_DRFR_128 | HIFN_PUCNFG_TCALLPHASES |
1139 HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32 |
1140 (sc->sc_drammodel ? HIFN_PUCNFG_DRAM : HIFN_PUCNFG_SRAM));
1141 }
1142
1143 WRITE_REG_0(sc, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
1144 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
1145 HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE | HIFN_DMACNFG_LAST |
1146 ((HIFN_POLL_FREQUENCY << 16 ) & HIFN_DMACNFG_POLLFREQ) |
1147 ((HIFN_POLL_SCALAR << 8) & HIFN_DMACNFG_POLLINVAL));
1148 }
1149
1150 /*
1151 * The maximum number of sessions supported by the card
1152 * is dependent on the amount of context ram, which
1153 * encryption algorithms are enabled, and how compression
1154 * is configured. This should be configured before this
1155 * routine is called.
1156 */
1157 static void
1158 hifn_sessions(struct hifn_softc *sc)
1159 {
1160 u_int32_t pucnfg;
1161 int ctxsize;
1162
1163 DPRINTF("%s()\n", __FUNCTION__);
1164
1165 pucnfg = READ_REG_0(sc, HIFN_0_PUCNFG);
1166
1167 if (pucnfg & HIFN_PUCNFG_COMPSING) {
1168 if (pucnfg & HIFN_PUCNFG_ENCCNFG)
1169 ctxsize = 128;
1170 else
1171 ctxsize = 512;
1172 /*
1173 * 7955/7956 has internal context memory of 32K
1174 */
1175 if (sc->sc_flags & HIFN_IS_7956)
1176 sc->sc_maxses = 32768 / ctxsize;
1177 else
1178 sc->sc_maxses = 1 +
1179 ((sc->sc_ramsize - 32768) / ctxsize);
1180 } else
1181 sc->sc_maxses = sc->sc_ramsize / 16384;
1182
1183 if (sc->sc_maxses > 2048)
1184 sc->sc_maxses = 2048;
1185 }
1186
1187 /*
1188 * Determine ram type (sram or dram). Board should be just out of a reset
1189 * state when this is called.
1190 */
1191 static int
1192 hifn_ramtype(struct hifn_softc *sc)
1193 {
1194 u_int8_t data[8], dataexpect[8];
1195 int i;
1196
1197 for (i = 0; i < sizeof(data); i++)
1198 data[i] = dataexpect[i] = 0x55;
1199 if (hifn_writeramaddr(sc, 0, data))
1200 return (-1);
1201 if (hifn_readramaddr(sc, 0, data))
1202 return (-1);
1203 if (bcmp(data, dataexpect, sizeof(data)) != 0) {
1204 sc->sc_drammodel = 1;
1205 return (0);
1206 }
1207
1208 for (i = 0; i < sizeof(data); i++)
1209 data[i] = dataexpect[i] = 0xaa;
1210 if (hifn_writeramaddr(sc, 0, data))
1211 return (-1);
1212 if (hifn_readramaddr(sc, 0, data))
1213 return (-1);
1214 if (bcmp(data, dataexpect, sizeof(data)) != 0) {
1215 sc->sc_drammodel = 1;
1216 return (0);
1217 }
1218
1219 return (0);
1220 }
1221
1222 #define HIFN_SRAM_MAX (32 << 20)
1223 #define HIFN_SRAM_STEP_SIZE 16384
1224 #define HIFN_SRAM_GRANULARITY (HIFN_SRAM_MAX / HIFN_SRAM_STEP_SIZE)
1225
1226 static int
1227 hifn_sramsize(struct hifn_softc *sc)
1228 {
1229 u_int32_t a;
1230 u_int8_t data[8];
1231 u_int8_t dataexpect[sizeof(data)];
1232 int32_t i;
1233
1234 for (i = 0; i < sizeof(data); i++)
1235 data[i] = dataexpect[i] = i ^ 0x5a;
1236
1237 for (i = HIFN_SRAM_GRANULARITY - 1; i >= 0; i--) {
1238 a = i * HIFN_SRAM_STEP_SIZE;
1239 bcopy(&i, data, sizeof(i));
1240 hifn_writeramaddr(sc, a, data);
1241 }
1242
1243 for (i = 0; i < HIFN_SRAM_GRANULARITY; i++) {
1244 a = i * HIFN_SRAM_STEP_SIZE;
1245 bcopy(&i, dataexpect, sizeof(i));
1246 if (hifn_readramaddr(sc, a, data) < 0)
1247 return (0);
1248 if (bcmp(data, dataexpect, sizeof(data)) != 0)
1249 return (0);
1250 sc->sc_ramsize = a + HIFN_SRAM_STEP_SIZE;
1251 }
1252
1253 return (0);
1254 }
1255
1256 /*
1257 * XXX For dram boards, one should really try all of the
1258 * HIFN_PUCNFG_DSZ_*'s. This just assumes that PUCNFG
1259 * is already set up correctly.
1260 */
1261 static int
1262 hifn_dramsize(struct hifn_softc *sc)
1263 {
1264 u_int32_t cnfg;
1265
1266 if (sc->sc_flags & HIFN_IS_7956) {
1267 /*
1268 * 7955/7956 have a fixed internal ram of only 32K.
1269 */
1270 sc->sc_ramsize = 32768;
1271 } else {
1272 cnfg = READ_REG_0(sc, HIFN_0_PUCNFG) &
1273 HIFN_PUCNFG_DRAMMASK;
1274 sc->sc_ramsize = 1 << ((cnfg >> 13) + 18);
1275 }
1276 return (0);
1277 }
1278
1279 static void
1280 hifn_alloc_slot(struct hifn_softc *sc, int *cmdp, int *srcp, int *dstp, int *resp)
1281 {
1282 struct hifn_dma *dma = sc->sc_dma;
1283
1284 DPRINTF("%s()\n", __FUNCTION__);
1285
1286 if (dma->cmdi == HIFN_D_CMD_RSIZE) {
1287 dma->cmdi = 0;
1288 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
1289 wmb();
1290 dma->cmdr[HIFN_D_CMD_RSIZE].l |= htole32(HIFN_D_VALID);
1291 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
1292 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1293 }
1294 *cmdp = dma->cmdi++;
1295 dma->cmdk = dma->cmdi;
1296
1297 if (dma->srci == HIFN_D_SRC_RSIZE) {
1298 dma->srci = 0;
1299 dma->srcr[HIFN_D_SRC_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
1300 wmb();
1301 dma->srcr[HIFN_D_SRC_RSIZE].l |= htole32(HIFN_D_VALID);
1302 HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
1303 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1304 }
1305 *srcp = dma->srci++;
1306 dma->srck = dma->srci;
1307
1308 if (dma->dsti == HIFN_D_DST_RSIZE) {
1309 dma->dsti = 0;
1310 dma->dstr[HIFN_D_DST_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
1311 wmb();
1312 dma->dstr[HIFN_D_DST_RSIZE].l |= htole32(HIFN_D_VALID);
1313 HIFN_DSTR_SYNC(sc, HIFN_D_DST_RSIZE,
1314 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1315 }
1316 *dstp = dma->dsti++;
1317 dma->dstk = dma->dsti;
1318
1319 if (dma->resi == HIFN_D_RES_RSIZE) {
1320 dma->resi = 0;
1321 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
1322 wmb();
1323 dma->resr[HIFN_D_RES_RSIZE].l |= htole32(HIFN_D_VALID);
1324 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
1325 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1326 }
1327 *resp = dma->resi++;
1328 dma->resk = dma->resi;
1329 }
1330
1331 static int
1332 hifn_writeramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
1333 {
1334 struct hifn_dma *dma = sc->sc_dma;
1335 hifn_base_command_t wc;
1336 const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
1337 int r, cmdi, resi, srci, dsti;
1338
1339 DPRINTF("%s()\n", __FUNCTION__);
1340
1341 wc.masks = htole16(3 << 13);
1342 wc.session_num = htole16(addr >> 14);
1343 wc.total_source_count = htole16(8);
1344 wc.total_dest_count = htole16(addr & 0x3fff);
1345
1346 hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
1347
1348 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1349 HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
1350 HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
1351
1352 /* build write command */
1353 bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
1354 *(hifn_base_command_t *)dma->command_bufs[cmdi] = wc;
1355 bcopy(data, &dma->test_src, sizeof(dma->test_src));
1356
1357 dma->srcr[srci].p = htole32(sc->sc_dma_physaddr
1358 + offsetof(struct hifn_dma, test_src));
1359 dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr
1360 + offsetof(struct hifn_dma, test_dst));
1361
1362 dma->cmdr[cmdi].l = htole32(16 | masks);
1363 dma->srcr[srci].l = htole32(8 | masks);
1364 dma->dstr[dsti].l = htole32(4 | masks);
1365 dma->resr[resi].l = htole32(4 | masks);
1366
1367 for (r = 10000; r >= 0; r--) {
1368 DELAY(10);
1369 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
1370 break;
1371 }
1372 if (r == 0) {
1373 device_printf(sc->sc_dev, "writeramaddr -- "
1374 "result[%d](addr %d) still valid\n", resi, addr);
1375 r = -1;
1376 return (-1);
1377 } else
1378 r = 0;
1379
1380 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1381 HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
1382 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
1383
1384 return (r);
1385 }
1386
1387 static int
1388 hifn_readramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
1389 {
1390 struct hifn_dma *dma = sc->sc_dma;
1391 hifn_base_command_t rc;
1392 const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
1393 int r, cmdi, srci, dsti, resi;
1394
1395 DPRINTF("%s()\n", __FUNCTION__);
1396
1397 rc.masks = htole16(2 << 13);
1398 rc.session_num = htole16(addr >> 14);
1399 rc.total_source_count = htole16(addr & 0x3fff);
1400 rc.total_dest_count = htole16(8);
1401
1402 hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
1403
1404 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1405 HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
1406 HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
1407
1408 bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
1409 *(hifn_base_command_t *)dma->command_bufs[cmdi] = rc;
1410
1411 dma->srcr[srci].p = htole32(sc->sc_dma_physaddr +
1412 offsetof(struct hifn_dma, test_src));
1413 dma->test_src = 0;
1414 dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr +
1415 offsetof(struct hifn_dma, test_dst));
1416 dma->test_dst = 0;
1417 dma->cmdr[cmdi].l = htole32(8 | masks);
1418 dma->srcr[srci].l = htole32(8 | masks);
1419 dma->dstr[dsti].l = htole32(8 | masks);
1420 dma->resr[resi].l = htole32(HIFN_MAX_RESULT | masks);
1421
1422 for (r = 10000; r >= 0; r--) {
1423 DELAY(10);
1424 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
1425 break;
1426 }
1427 if (r == 0) {
1428 device_printf(sc->sc_dev, "readramaddr -- "
1429 "result[%d](addr %d) still valid\n", resi, addr);
1430 r = -1;
1431 } else {
1432 r = 0;
1433 bcopy(&dma->test_dst, data, sizeof(dma->test_dst));
1434 }
1435
1436 WRITE_REG_1(sc, HIFN_1_DMA_CSR,
1437 HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
1438 HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
1439
1440 return (r);
1441 }
1442
1443 /*
1444 * Initialize the descriptor rings.
1445 */
1446 static void
1447 hifn_init_dma(struct hifn_softc *sc)
1448 {
1449 struct hifn_dma *dma = sc->sc_dma;
1450 int i;
1451
1452 DPRINTF("%s()\n", __FUNCTION__);
1453
1454 hifn_set_retry(sc);
1455
1456 /* initialize static pointer values */
1457 for (i = 0; i < HIFN_D_CMD_RSIZE; i++)
1458 dma->cmdr[i].p = htole32(sc->sc_dma_physaddr +
1459 offsetof(struct hifn_dma, command_bufs[i][0]));
1460 for (i = 0; i < HIFN_D_RES_RSIZE; i++)
1461 dma->resr[i].p = htole32(sc->sc_dma_physaddr +
1462 offsetof(struct hifn_dma, result_bufs[i][0]));
1463
1464 dma->cmdr[HIFN_D_CMD_RSIZE].p =
1465 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, cmdr[0]));
1466 dma->srcr[HIFN_D_SRC_RSIZE].p =
1467 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, srcr[0]));
1468 dma->dstr[HIFN_D_DST_RSIZE].p =
1469 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, dstr[0]));
1470 dma->resr[HIFN_D_RES_RSIZE].p =
1471 htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, resr[0]));
1472
1473 dma->cmdu = dma->srcu = dma->dstu = dma->resu = 0;
1474 dma->cmdi = dma->srci = dma->dsti = dma->resi = 0;
1475 dma->cmdk = dma->srck = dma->dstk = dma->resk = 0;
1476 }
1477
1478 /*
1479 * Writes out the raw command buffer space. Returns the
1480 * command buffer size.
1481 */
1482 static u_int
1483 hifn_write_command(struct hifn_command *cmd, u_int8_t *buf)
1484 {
1485 struct hifn_softc *sc = NULL;
1486 u_int8_t *buf_pos;
1487 hifn_base_command_t *base_cmd;
1488 hifn_mac_command_t *mac_cmd;
1489 hifn_crypt_command_t *cry_cmd;
1490 int using_mac, using_crypt, len, ivlen;
1491 u_int32_t dlen, slen;
1492
1493 DPRINTF("%s()\n", __FUNCTION__);
1494
1495 buf_pos = buf;
1496 using_mac = cmd->base_masks & HIFN_BASE_CMD_MAC;
1497 using_crypt = cmd->base_masks & HIFN_BASE_CMD_CRYPT;
1498
1499 base_cmd = (hifn_base_command_t *)buf_pos;
1500 base_cmd->masks = htole16(cmd->base_masks);
1501 slen = cmd->src_mapsize;
1502 if (cmd->sloplen)
1503 dlen = cmd->dst_mapsize - cmd->sloplen + sizeof(u_int32_t);
1504 else
1505 dlen = cmd->dst_mapsize;
1506 base_cmd->total_source_count = htole16(slen & HIFN_BASE_CMD_LENMASK_LO);
1507 base_cmd->total_dest_count = htole16(dlen & HIFN_BASE_CMD_LENMASK_LO);
1508 dlen >>= 16;
1509 slen >>= 16;
1510 base_cmd->session_num = htole16(
1511 ((slen << HIFN_BASE_CMD_SRCLEN_S) & HIFN_BASE_CMD_SRCLEN_M) |
1512 ((dlen << HIFN_BASE_CMD_DSTLEN_S) & HIFN_BASE_CMD_DSTLEN_M));
1513 buf_pos += sizeof(hifn_base_command_t);
1514
1515 if (using_mac) {
1516 mac_cmd = (hifn_mac_command_t *)buf_pos;
1517 dlen = cmd->maccrd->crd_len;
1518 mac_cmd->source_count = htole16(dlen & 0xffff);
1519 dlen >>= 16;
1520 mac_cmd->masks = htole16(cmd->mac_masks |
1521 ((dlen << HIFN_MAC_CMD_SRCLEN_S) & HIFN_MAC_CMD_SRCLEN_M));
1522 mac_cmd->header_skip = htole16(cmd->maccrd->crd_skip);
1523 mac_cmd->reserved = 0;
1524 buf_pos += sizeof(hifn_mac_command_t);
1525 }
1526
1527 if (using_crypt) {
1528 cry_cmd = (hifn_crypt_command_t *)buf_pos;
1529 dlen = cmd->enccrd->crd_len;
1530 cry_cmd->source_count = htole16(dlen & 0xffff);
1531 dlen >>= 16;
1532 cry_cmd->masks = htole16(cmd->cry_masks |
1533 ((dlen << HIFN_CRYPT_CMD_SRCLEN_S) & HIFN_CRYPT_CMD_SRCLEN_M));
1534 cry_cmd->header_skip = htole16(cmd->enccrd->crd_skip);
1535 cry_cmd->reserved = 0;
1536 buf_pos += sizeof(hifn_crypt_command_t);
1537 }
1538
1539 if (using_mac && cmd->mac_masks & HIFN_MAC_CMD_NEW_KEY) {
1540 bcopy(cmd->mac, buf_pos, HIFN_MAC_KEY_LENGTH);
1541 buf_pos += HIFN_MAC_KEY_LENGTH;
1542 }
1543
1544 if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_KEY) {
1545 switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
1546 case HIFN_CRYPT_CMD_ALG_3DES:
1547 bcopy(cmd->ck, buf_pos, HIFN_3DES_KEY_LENGTH);
1548 buf_pos += HIFN_3DES_KEY_LENGTH;
1549 break;
1550 case HIFN_CRYPT_CMD_ALG_DES:
1551 bcopy(cmd->ck, buf_pos, HIFN_DES_KEY_LENGTH);
1552 buf_pos += HIFN_DES_KEY_LENGTH;
1553 break;
1554 case HIFN_CRYPT_CMD_ALG_RC4:
1555 len = 256;
1556 do {
1557 int clen;
1558
1559 clen = MIN(cmd->cklen, len);
1560 bcopy(cmd->ck, buf_pos, clen);
1561 len -= clen;
1562 buf_pos += clen;
1563 } while (len > 0);
1564 bzero(buf_pos, 4);
1565 buf_pos += 4;
1566 break;
1567 case HIFN_CRYPT_CMD_ALG_AES:
1568 /*
1569 * AES keys are variable 128, 192 and
1570 * 256 bits (16, 24 and 32 bytes).
1571 */
1572 bcopy(cmd->ck, buf_pos, cmd->cklen);
1573 buf_pos += cmd->cklen;
1574 break;
1575 }
1576 }
1577
1578 if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_IV) {
1579 switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
1580 case HIFN_CRYPT_CMD_ALG_AES:
1581 ivlen = HIFN_AES_IV_LENGTH;
1582 break;
1583 default:
1584 ivlen = HIFN_IV_LENGTH;
1585 break;
1586 }
1587 bcopy(cmd->iv, buf_pos, ivlen);
1588 buf_pos += ivlen;
1589 }
1590
1591 if ((cmd->base_masks & (HIFN_BASE_CMD_MAC|HIFN_BASE_CMD_CRYPT)) == 0) {
1592 bzero(buf_pos, 8);
1593 buf_pos += 8;
1594 }
1595
1596 return (buf_pos - buf);
1597 }
1598
1599 static int
1600 hifn_dmamap_aligned(struct hifn_operand *op)
1601 {
1602 struct hifn_softc *sc = NULL;
1603 int i;
1604
1605 DPRINTF("%s()\n", __FUNCTION__);
1606
1607 for (i = 0; i < op->nsegs; i++) {
1608 if (op->segs[i].ds_addr & 3)
1609 return (0);
1610 if ((i != (op->nsegs - 1)) && (op->segs[i].ds_len & 3))
1611 return (0);
1612 }
1613 return (1);
1614 }
1615
1616 static __inline int
1617 hifn_dmamap_dstwrap(struct hifn_softc *sc, int idx)
1618 {
1619 struct hifn_dma *dma = sc->sc_dma;
1620
1621 if (++idx == HIFN_D_DST_RSIZE) {
1622 dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP |
1623 HIFN_D_MASKDONEIRQ);
1624 HIFN_DSTR_SYNC(sc, idx,
1625 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1626 idx = 0;
1627 }
1628 return (idx);
1629 }
1630
1631 static int
1632 hifn_dmamap_load_dst(struct hifn_softc *sc, struct hifn_command *cmd)
1633 {
1634 struct hifn_dma *dma = sc->sc_dma;
1635 struct hifn_operand *dst = &cmd->dst;
1636 u_int32_t p, l;
1637 int idx, used = 0, i;
1638
1639 DPRINTF("%s()\n", __FUNCTION__);
1640
1641 idx = dma->dsti;
1642 for (i = 0; i < dst->nsegs - 1; i++) {
1643 dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
1644 dma->dstr[idx].l = htole32(HIFN_D_MASKDONEIRQ | dst->segs[i].ds_len);
1645 wmb();
1646 dma->dstr[idx].l |= htole32(HIFN_D_VALID);
1647 HIFN_DSTR_SYNC(sc, idx,
1648 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1649 used++;
1650
1651 idx = hifn_dmamap_dstwrap(sc, idx);
1652 }
1653
1654 if (cmd->sloplen == 0) {
1655 p = dst->segs[i].ds_addr;
1656 l = HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
1657 dst->segs[i].ds_len;
1658 } else {
1659 p = sc->sc_dma_physaddr +
1660 offsetof(struct hifn_dma, slop[cmd->slopidx]);
1661 l = HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
1662 sizeof(u_int32_t);
1663
1664 if ((dst->segs[i].ds_len - cmd->sloplen) != 0) {
1665 dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
1666 dma->dstr[idx].l = htole32(HIFN_D_MASKDONEIRQ |
1667 (dst->segs[i].ds_len - cmd->sloplen));
1668 wmb();
1669 dma->dstr[idx].l |= htole32(HIFN_D_VALID);
1670 HIFN_DSTR_SYNC(sc, idx,
1671 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1672 used++;
1673
1674 idx = hifn_dmamap_dstwrap(sc, idx);
1675 }
1676 }
1677 dma->dstr[idx].p = htole32(p);
1678 dma->dstr[idx].l = htole32(l);
1679 wmb();
1680 dma->dstr[idx].l |= htole32(HIFN_D_VALID);
1681 HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1682 used++;
1683
1684 idx = hifn_dmamap_dstwrap(sc, idx);
1685
1686 dma->dsti = idx;
1687 dma->dstu += used;
1688 return (idx);
1689 }
1690
1691 static __inline int
1692 hifn_dmamap_srcwrap(struct hifn_softc *sc, int idx)
1693 {
1694 struct hifn_dma *dma = sc->sc_dma;
1695
1696 if (++idx == HIFN_D_SRC_RSIZE) {
1697 dma->srcr[idx].l = htole32(HIFN_D_VALID |
1698 HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
1699 HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
1700 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1701 idx = 0;
1702 }
1703 return (idx);
1704 }
1705
1706 static int
1707 hifn_dmamap_load_src(struct hifn_softc *sc, struct hifn_command *cmd)
1708 {
1709 struct hifn_dma *dma = sc->sc_dma;
1710 struct hifn_operand *src = &cmd->src;
1711 int idx, i;
1712 u_int32_t last = 0;
1713
1714 DPRINTF("%s()\n", __FUNCTION__);
1715
1716 idx = dma->srci;
1717 for (i = 0; i < src->nsegs; i++) {
1718 if (i == src->nsegs - 1)
1719 last = HIFN_D_LAST;
1720
1721 dma->srcr[idx].p = htole32(src->segs[i].ds_addr);
1722 dma->srcr[idx].l = htole32(src->segs[i].ds_len |
1723 HIFN_D_MASKDONEIRQ | last);
1724 wmb();
1725 dma->srcr[idx].l |= htole32(HIFN_D_VALID);
1726 HIFN_SRCR_SYNC(sc, idx,
1727 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1728
1729 idx = hifn_dmamap_srcwrap(sc, idx);
1730 }
1731 dma->srci = idx;
1732 dma->srcu += src->nsegs;
1733 return (idx);
1734 }
1735
1736
1737 static int
1738 hifn_crypto(
1739 struct hifn_softc *sc,
1740 struct hifn_command *cmd,
1741 struct cryptop *crp,
1742 int hint)
1743 {
1744 struct hifn_dma *dma = sc->sc_dma;
1745 u_int32_t cmdlen, csr;
1746 int cmdi, resi, err = 0;
1747 unsigned long l_flags;
1748
1749 DPRINTF("%s()\n", __FUNCTION__);
1750
1751 /*
1752 * need 1 cmd, and 1 res
1753 *
1754 * NB: check this first since it's easy.
1755 */
1756 HIFN_LOCK(sc);
1757 if ((dma->cmdu + 1) > HIFN_D_CMD_RSIZE ||
1758 (dma->resu + 1) > HIFN_D_RES_RSIZE) {
1759 #ifdef HIFN_DEBUG
1760 if (hifn_debug) {
1761 device_printf(sc->sc_dev,
1762 "cmd/result exhaustion, cmdu %u resu %u\n",
1763 dma->cmdu, dma->resu);
1764 }
1765 #endif
1766 hifnstats.hst_nomem_cr++;
1767 sc->sc_needwakeup |= CRYPTO_SYMQ;
1768 HIFN_UNLOCK(sc);
1769 return (ERESTART);
1770 }
1771
1772 if (crp->crp_flags & CRYPTO_F_SKBUF) {
1773 if (pci_map_skb(sc, &cmd->src, cmd->src_skb)) {
1774 hifnstats.hst_nomem_load++;
1775 err = ENOMEM;
1776 goto err_srcmap1;
1777 }
1778 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1779 if (pci_map_uio(sc, &cmd->src, cmd->src_io)) {
1780 hifnstats.hst_nomem_load++;
1781 err = ENOMEM;
1782 goto err_srcmap1;
1783 }
1784 } else {
1785 if (pci_map_buf(sc, &cmd->src, cmd->src_buf, crp->crp_ilen)) {
1786 hifnstats.hst_nomem_load++;
1787 err = ENOMEM;
1788 goto err_srcmap1;
1789 }
1790 }
1791
1792 if (hifn_dmamap_aligned(&cmd->src)) {
1793 cmd->sloplen = cmd->src_mapsize & 3;
1794 cmd->dst = cmd->src;
1795 } else {
1796 if (crp->crp_flags & CRYPTO_F_IOV) {
1797 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
1798 err = EINVAL;
1799 goto err_srcmap;
1800 } else if (crp->crp_flags & CRYPTO_F_SKBUF) {
1801 #ifdef NOTYET
1802 int totlen, len;
1803 struct mbuf *m, *m0, *mlast;
1804
1805 KASSERT(cmd->dst_m == cmd->src_m,
1806 ("hifn_crypto: dst_m initialized improperly"));
1807 hifnstats.hst_unaligned++;
1808 /*
1809 * Source is not aligned on a longword boundary.
1810 * Copy the data to insure alignment. If we fail
1811 * to allocate mbufs or clusters while doing this
1812 * we return ERESTART so the operation is requeued
1813 * at the crypto later, but only if there are
1814 * ops already posted to the hardware; otherwise we
1815 * have no guarantee that we'll be re-entered.
1816 */
1817 totlen = cmd->src_mapsize;
1818 if (cmd->src_m->m_flags & M_PKTHDR) {
1819 len = MHLEN;
1820 MGETHDR(m0, M_DONTWAIT, MT_DATA);
1821 if (m0 && !m_dup_pkthdr(m0, cmd->src_m, M_DONTWAIT)) {
1822 m_free(m0);
1823 m0 = NULL;
1824 }
1825 } else {
1826 len = MLEN;
1827 MGET(m0, M_DONTWAIT, MT_DATA);
1828 }
1829 if (m0 == NULL) {
1830 hifnstats.hst_nomem_mbuf++;
1831 err = dma->cmdu ? ERESTART : ENOMEM;
1832 goto err_srcmap;
1833 }
1834 if (totlen >= MINCLSIZE) {
1835 MCLGET(m0, M_DONTWAIT);
1836 if ((m0->m_flags & M_EXT) == 0) {
1837 hifnstats.hst_nomem_mcl++;
1838 err = dma->cmdu ? ERESTART : ENOMEM;
1839 m_freem(m0);
1840 goto err_srcmap;
1841 }
1842 len = MCLBYTES;
1843 }
1844 totlen -= len;
1845 m0->m_pkthdr.len = m0->m_len = len;
1846 mlast = m0;
1847
1848 while (totlen > 0) {
1849 MGET(m, M_DONTWAIT, MT_DATA);
1850 if (m == NULL) {
1851 hifnstats.hst_nomem_mbuf++;
1852 err = dma->cmdu ? ERESTART : ENOMEM;
1853 m_freem(m0);
1854 goto err_srcmap;
1855 }
1856 len = MLEN;
1857 if (totlen >= MINCLSIZE) {
1858 MCLGET(m, M_DONTWAIT);
1859 if ((m->m_flags & M_EXT) == 0) {
1860 hifnstats.hst_nomem_mcl++;
1861 err = dma->cmdu ? ERESTART : ENOMEM;
1862 mlast->m_next = m;
1863 m_freem(m0);
1864 goto err_srcmap;
1865 }
1866 len = MCLBYTES;
1867 }
1868
1869 m->m_len = len;
1870 m0->m_pkthdr.len += len;
1871 totlen -= len;
1872
1873 mlast->m_next = m;
1874 mlast = m;
1875 }
1876 cmd->dst_m = m0;
1877 #else
1878 device_printf(sc->sc_dev,
1879 "%s,%d: CRYPTO_F_SKBUF unaligned not implemented\n",
1880 __FILE__, __LINE__);
1881 err = EINVAL;
1882 goto err_srcmap;
1883 #endif
1884 } else {
1885 device_printf(sc->sc_dev,
1886 "%s,%d: unaligned contig buffers not implemented\n",
1887 __FILE__, __LINE__);
1888 err = EINVAL;
1889 goto err_srcmap;
1890 }
1891 }
1892
1893 if (cmd->dst_map == NULL) {
1894 if (crp->crp_flags & CRYPTO_F_SKBUF) {
1895 if (pci_map_skb(sc, &cmd->dst, cmd->dst_skb)) {
1896 hifnstats.hst_nomem_map++;
1897 err = ENOMEM;
1898 goto err_dstmap1;
1899 }
1900 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1901 if (pci_map_uio(sc, &cmd->dst, cmd->dst_io)) {
1902 hifnstats.hst_nomem_load++;
1903 err = ENOMEM;
1904 goto err_dstmap1;
1905 }
1906 } else {
1907 if (pci_map_buf(sc, &cmd->dst, cmd->dst_buf, crp->crp_ilen)) {
1908 hifnstats.hst_nomem_load++;
1909 err = ENOMEM;
1910 goto err_dstmap1;
1911 }
1912 }
1913 }
1914
1915 #ifdef HIFN_DEBUG
1916 if (hifn_debug) {
1917 device_printf(sc->sc_dev,
1918 "Entering cmd: stat %8x ien %8x u %d/%d/%d/%d n %d/%d\n",
1919 READ_REG_1(sc, HIFN_1_DMA_CSR),
1920 READ_REG_1(sc, HIFN_1_DMA_IER),
1921 dma->cmdu, dma->srcu, dma->dstu, dma->resu,
1922 cmd->src_nsegs, cmd->dst_nsegs);
1923 }
1924 #endif
1925
1926 #if 0
1927 if (cmd->src_map == cmd->dst_map) {
1928 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
1929 BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
1930 } else {
1931 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
1932 BUS_DMASYNC_PREWRITE);
1933 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
1934 BUS_DMASYNC_PREREAD);
1935 }
1936 #endif
1937
1938 /*
1939 * need N src, and N dst
1940 */
1941 if ((dma->srcu + cmd->src_nsegs) > HIFN_D_SRC_RSIZE ||
1942 (dma->dstu + cmd->dst_nsegs + 1) > HIFN_D_DST_RSIZE) {
1943 #ifdef HIFN_DEBUG
1944 if (hifn_debug) {
1945 device_printf(sc->sc_dev,
1946 "src/dst exhaustion, srcu %u+%u dstu %u+%u\n",
1947 dma->srcu, cmd->src_nsegs,
1948 dma->dstu, cmd->dst_nsegs);
1949 }
1950 #endif
1951 hifnstats.hst_nomem_sd++;
1952 err = ERESTART;
1953 goto err_dstmap;
1954 }
1955
1956 if (dma->cmdi == HIFN_D_CMD_RSIZE) {
1957 dma->cmdi = 0;
1958 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
1959 wmb();
1960 dma->cmdr[HIFN_D_CMD_RSIZE].l |= htole32(HIFN_D_VALID);
1961 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
1962 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1963 }
1964 cmdi = dma->cmdi++;
1965 cmdlen = hifn_write_command(cmd, dma->command_bufs[cmdi]);
1966 HIFN_CMD_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE);
1967
1968 /* .p for command/result already set */
1969 dma->cmdr[cmdi].l = htole32(cmdlen | HIFN_D_LAST |
1970 HIFN_D_MASKDONEIRQ);
1971 wmb();
1972 dma->cmdr[cmdi].l |= htole32(HIFN_D_VALID);
1973 HIFN_CMDR_SYNC(sc, cmdi,
1974 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
1975 dma->cmdu++;
1976
1977 /*
1978 * We don't worry about missing an interrupt (which a "command wait"
1979 * interrupt salvages us from), unless there is more than one command
1980 * in the queue.
1981 */
1982 if (dma->cmdu > 1) {
1983 sc->sc_dmaier |= HIFN_DMAIER_C_WAIT;
1984 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
1985 }
1986
1987 hifnstats.hst_ipackets++;
1988 hifnstats.hst_ibytes += cmd->src_mapsize;
1989
1990 hifn_dmamap_load_src(sc, cmd);
1991
1992 /*
1993 * Unlike other descriptors, we don't mask done interrupt from
1994 * result descriptor.
1995 */
1996 #ifdef HIFN_DEBUG
1997 if (hifn_debug)
1998 device_printf(sc->sc_dev, "load res\n");
1999 #endif
2000 if (dma->resi == HIFN_D_RES_RSIZE) {
2001 dma->resi = 0;
2002 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
2003 wmb();
2004 dma->resr[HIFN_D_RES_RSIZE].l |= htole32(HIFN_D_VALID);
2005 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
2006 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2007 }
2008 resi = dma->resi++;
2009 KASSERT(dma->hifn_commands[resi] == NULL,
2010 ("hifn_crypto: command slot %u busy", resi));
2011 dma->hifn_commands[resi] = cmd;
2012 HIFN_RES_SYNC(sc, resi, BUS_DMASYNC_PREREAD);
2013 if ((hint & CRYPTO_HINT_MORE) && sc->sc_curbatch < hifn_maxbatch) {
2014 dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
2015 HIFN_D_LAST | HIFN_D_MASKDONEIRQ);
2016 wmb();
2017 dma->resr[resi].l |= htole32(HIFN_D_VALID);
2018 sc->sc_curbatch++;
2019 if (sc->sc_curbatch > hifnstats.hst_maxbatch)
2020 hifnstats.hst_maxbatch = sc->sc_curbatch;
2021 hifnstats.hst_totbatch++;
2022 } else {
2023 dma->resr[resi].l = htole32(HIFN_MAX_RESULT | HIFN_D_LAST);
2024 wmb();
2025 dma->resr[resi].l |= htole32(HIFN_D_VALID);
2026 sc->sc_curbatch = 0;
2027 }
2028 HIFN_RESR_SYNC(sc, resi,
2029 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2030 dma->resu++;
2031
2032 if (cmd->sloplen)
2033 cmd->slopidx = resi;
2034
2035 hifn_dmamap_load_dst(sc, cmd);
2036
2037 csr = 0;
2038 if (sc->sc_c_busy == 0) {
2039 csr |= HIFN_DMACSR_C_CTRL_ENA;
2040 sc->sc_c_busy = 1;
2041 }
2042 if (sc->sc_s_busy == 0) {
2043 csr |= HIFN_DMACSR_S_CTRL_ENA;
2044 sc->sc_s_busy = 1;
2045 }
2046 if (sc->sc_r_busy == 0) {
2047 csr |= HIFN_DMACSR_R_CTRL_ENA;
2048 sc->sc_r_busy = 1;
2049 }
2050 if (sc->sc_d_busy == 0) {
2051 csr |= HIFN_DMACSR_D_CTRL_ENA;
2052 sc->sc_d_busy = 1;
2053 }
2054 if (csr)
2055 WRITE_REG_1(sc, HIFN_1_DMA_CSR, csr);
2056
2057 #ifdef HIFN_DEBUG
2058 if (hifn_debug) {
2059 device_printf(sc->sc_dev, "command: stat %8x ier %8x\n",
2060 READ_REG_1(sc, HIFN_1_DMA_CSR),
2061 READ_REG_1(sc, HIFN_1_DMA_IER));
2062 }
2063 #endif
2064
2065 sc->sc_active = 5;
2066 HIFN_UNLOCK(sc);
2067 KASSERT(err == 0, ("hifn_crypto: success with error %u", err));
2068 return (err); /* success */
2069
2070 err_dstmap:
2071 if (cmd->src_map != cmd->dst_map)
2072 pci_unmap_buf(sc, &cmd->dst);
2073 err_dstmap1:
2074 err_srcmap:
2075 if (crp->crp_flags & CRYPTO_F_SKBUF) {
2076 if (cmd->src_skb != cmd->dst_skb)
2077 #ifdef NOTYET
2078 m_freem(cmd->dst_m);
2079 #else
2080 device_printf(sc->sc_dev,
2081 "%s,%d: CRYPTO_F_SKBUF src != dst not implemented\n",
2082 __FILE__, __LINE__);
2083 #endif
2084 }
2085 pci_unmap_buf(sc, &cmd->src);
2086 err_srcmap1:
2087 HIFN_UNLOCK(sc);
2088 return (err);
2089 }
2090
2091 static void
2092 hifn_tick(unsigned long arg)
2093 {
2094 struct hifn_softc *sc;
2095 unsigned long l_flags;
2096
2097 if (arg >= HIFN_MAX_CHIPS)
2098 return;
2099 sc = hifn_chip_idx[arg];
2100 if (!sc)
2101 return;
2102
2103 HIFN_LOCK(sc);
2104 if (sc->sc_active == 0) {
2105 struct hifn_dma *dma = sc->sc_dma;
2106 u_int32_t r = 0;
2107
2108 if (dma->cmdu == 0 && sc->sc_c_busy) {
2109 sc->sc_c_busy = 0;
2110 r |= HIFN_DMACSR_C_CTRL_DIS;
2111 }
2112 if (dma->srcu == 0 && sc->sc_s_busy) {
2113 sc->sc_s_busy = 0;
2114 r |= HIFN_DMACSR_S_CTRL_DIS;
2115 }
2116 if (dma->dstu == 0 && sc->sc_d_busy) {
2117 sc->sc_d_busy = 0;
2118 r |= HIFN_DMACSR_D_CTRL_DIS;
2119 }
2120 if (dma->resu == 0 && sc->sc_r_busy) {
2121 sc->sc_r_busy = 0;
2122 r |= HIFN_DMACSR_R_CTRL_DIS;
2123 }
2124 if (r)
2125 WRITE_REG_1(sc, HIFN_1_DMA_CSR, r);
2126 } else
2127 sc->sc_active--;
2128 HIFN_UNLOCK(sc);
2129 mod_timer(&sc->sc_tickto, jiffies + HZ);
2130 }
2131
2132 static irqreturn_t
2133 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
2134 hifn_intr(int irq, void *arg)
2135 #else
2136 hifn_intr(int irq, void *arg, struct pt_regs *regs)
2137 #endif
2138 {
2139 struct hifn_softc *sc = arg;
2140 struct hifn_dma *dma;
2141 u_int32_t dmacsr, restart;
2142 int i, u;
2143 unsigned long l_flags;
2144
2145 dmacsr = READ_REG_1(sc, HIFN_1_DMA_CSR);
2146
2147 /* Nothing in the DMA unit interrupted */
2148 if ((dmacsr & sc->sc_dmaier) == 0)
2149 return IRQ_NONE;
2150
2151 HIFN_LOCK(sc);
2152
2153 dma = sc->sc_dma;
2154
2155 #ifdef HIFN_DEBUG
2156 if (hifn_debug) {
2157 device_printf(sc->sc_dev,
2158 "irq: stat %08x ien %08x damier %08x i %d/%d/%d/%d k %d/%d/%d/%d u %d/%d/%d/%d\n",
2159 dmacsr, READ_REG_1(sc, HIFN_1_DMA_IER), sc->sc_dmaier,
2160 dma->cmdi, dma->srci, dma->dsti, dma->resi,
2161 dma->cmdk, dma->srck, dma->dstk, dma->resk,
2162 dma->cmdu, dma->srcu, dma->dstu, dma->resu);
2163 }
2164 #endif
2165
2166 WRITE_REG_1(sc, HIFN_1_DMA_CSR, dmacsr & sc->sc_dmaier);
2167
2168 if ((sc->sc_flags & HIFN_HAS_PUBLIC) &&
2169 (dmacsr & HIFN_DMACSR_PUBDONE))
2170 WRITE_REG_1(sc, HIFN_1_PUB_STATUS,
2171 READ_REG_1(sc, HIFN_1_PUB_STATUS) | HIFN_PUBSTS_DONE);
2172
2173 restart = dmacsr & (HIFN_DMACSR_D_OVER | HIFN_DMACSR_R_OVER);
2174 if (restart)
2175 device_printf(sc->sc_dev, "overrun %x\n", dmacsr);
2176
2177 if (sc->sc_flags & HIFN_IS_7811) {
2178 if (dmacsr & HIFN_DMACSR_ILLR)
2179 device_printf(sc->sc_dev, "illegal read\n");
2180 if (dmacsr & HIFN_DMACSR_ILLW)
2181 device_printf(sc->sc_dev, "illegal write\n");
2182 }
2183
2184 restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
2185 HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
2186 if (restart) {
2187 device_printf(sc->sc_dev, "abort, resetting.\n");
2188 hifnstats.hst_abort++;
2189 hifn_abort(sc);
2190 HIFN_UNLOCK(sc);
2191 return IRQ_HANDLED;
2192 }
2193
2194 if ((dmacsr & HIFN_DMACSR_C_WAIT) && (dma->cmdu == 0)) {
2195 /*
2196 * If no slots to process and we receive a "waiting on
2197 * command" interrupt, we disable the "waiting on command"
2198 * (by clearing it).
2199 */
2200 sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
2201 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
2202 }
2203
2204 /* clear the rings */
2205 i = dma->resk; u = dma->resu;
2206 while (u != 0) {
2207 HIFN_RESR_SYNC(sc, i,
2208 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2209 if (dma->resr[i].l & htole32(HIFN_D_VALID)) {
2210 HIFN_RESR_SYNC(sc, i,
2211 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2212 break;
2213 }
2214
2215 if (i != HIFN_D_RES_RSIZE) {
2216 struct hifn_command *cmd;
2217 u_int8_t *macbuf = NULL;
2218
2219 HIFN_RES_SYNC(sc, i, BUS_DMASYNC_POSTREAD);
2220 cmd = dma->hifn_commands[i];
2221 KASSERT(cmd != NULL,
2222 ("hifn_intr: null command slot %u", i));
2223 dma->hifn_commands[i] = NULL;
2224
2225 if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
2226 macbuf = dma->result_bufs[i];
2227 macbuf += 12;
2228 }
2229
2230 hifn_callback(sc, cmd, macbuf);
2231 hifnstats.hst_opackets++;
2232 u--;
2233 }
2234
2235 if (++i == (HIFN_D_RES_RSIZE + 1))
2236 i = 0;
2237 }
2238 dma->resk = i; dma->resu = u;
2239
2240 i = dma->srck; u = dma->srcu;
2241 while (u != 0) {
2242 if (i == HIFN_D_SRC_RSIZE)
2243 i = 0;
2244 HIFN_SRCR_SYNC(sc, i,
2245 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2246 if (dma->srcr[i].l & htole32(HIFN_D_VALID)) {
2247 HIFN_SRCR_SYNC(sc, i,
2248 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2249 break;
2250 }
2251 i++, u--;
2252 }
2253 dma->srck = i; dma->srcu = u;
2254
2255 i = dma->cmdk; u = dma->cmdu;
2256 while (u != 0) {
2257 HIFN_CMDR_SYNC(sc, i,
2258 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
2259 if (dma->cmdr[i].l & htole32(HIFN_D_VALID)) {
2260 HIFN_CMDR_SYNC(sc, i,
2261 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
2262 break;
2263 }
2264 if (i != HIFN_D_CMD_RSIZE) {
2265 u--;
2266 HIFN_CMD_SYNC(sc, i, BUS_DMASYNC_POSTWRITE);
2267 }
2268 if (++i == (HIFN_D_CMD_RSIZE + 1))
2269 i = 0;
2270 }
2271 dma->cmdk = i; dma->cmdu = u;
2272
2273 HIFN_UNLOCK(sc);
2274
2275 if (sc->sc_needwakeup) { /* XXX check high watermark */
2276 int wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ);
2277 #ifdef HIFN_DEBUG
2278 if (hifn_debug)
2279 device_printf(sc->sc_dev,
2280 "wakeup crypto (%x) u %d/%d/%d/%d\n",
2281 sc->sc_needwakeup,
2282 dma->cmdu, dma->srcu, dma->dstu, dma->resu);
2283 #endif
2284 sc->sc_needwakeup &= ~wakeup;
2285 crypto_unblock(sc->sc_cid, wakeup);
2286 }
2287
2288 return IRQ_HANDLED;
2289 }
2290
2291 /*
2292 * Allocate a new 'session' and return an encoded session id. 'sidp'
2293 * contains our registration id, and should contain an encoded session
2294 * id on successful allocation.
2295 */
2296 static int
2297 hifn_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
2298 {
2299 struct hifn_softc *sc = device_get_softc(dev);
2300 struct cryptoini *c;
2301 int mac = 0, cry = 0, sesn;
2302 struct hifn_session *ses = NULL;
2303 unsigned long l_flags;
2304
2305 DPRINTF("%s()\n", __FUNCTION__);
2306
2307 KASSERT(sc != NULL, ("hifn_newsession: null softc"));
2308 if (sidp == NULL || cri == NULL || sc == NULL) {
2309 DPRINTF("%s,%d: %s - EINVAL\n", __FILE__, __LINE__, __FUNCTION__);
2310 return (EINVAL);
2311 }
2312
2313 HIFN_LOCK(sc);
2314 if (sc->sc_sessions == NULL) {
2315 ses = sc->sc_sessions = (struct hifn_session *)kmalloc(sizeof(*ses),
2316 SLAB_ATOMIC);
2317 if (ses == NULL) {
2318 HIFN_UNLOCK(sc);
2319 return (ENOMEM);
2320 }
2321 sesn = 0;
2322 sc->sc_nsessions = 1;
2323 } else {
2324 for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
2325 if (!sc->sc_sessions[sesn].hs_used) {
2326 ses = &sc->sc_sessions[sesn];
2327 break;
2328 }
2329 }
2330
2331 if (ses == NULL) {
2332 sesn = sc->sc_nsessions;
2333 ses = (struct hifn_session *)kmalloc((sesn + 1) * sizeof(*ses),
2334 SLAB_ATOMIC);
2335 if (ses == NULL) {
2336 HIFN_UNLOCK(sc);
2337 return (ENOMEM);
2338 }
2339 bcopy(sc->sc_sessions, ses, sesn * sizeof(*ses));
2340 bzero(sc->sc_sessions, sesn * sizeof(*ses));
2341 kfree(sc->sc_sessions);
2342 sc->sc_sessions = ses;
2343 ses = &sc->sc_sessions[sesn];
2344 sc->sc_nsessions++;
2345 }
2346 }
2347 HIFN_UNLOCK(sc);
2348
2349 bzero(ses, sizeof(*ses));
2350 ses->hs_used = 1;
2351
2352 for (c = cri; c != NULL; c = c->cri_next) {
2353 switch (c->cri_alg) {
2354 case CRYPTO_MD5:
2355 case CRYPTO_SHA1:
2356 case CRYPTO_MD5_HMAC:
2357 case CRYPTO_SHA1_HMAC:
2358 if (mac) {
2359 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2360 return (EINVAL);
2361 }
2362 mac = 1;
2363 ses->hs_mlen = c->cri_mlen;
2364 if (ses->hs_mlen == 0) {
2365 switch (c->cri_alg) {
2366 case CRYPTO_MD5:
2367 case CRYPTO_MD5_HMAC:
2368 ses->hs_mlen = 16;
2369 break;
2370 case CRYPTO_SHA1:
2371 case CRYPTO_SHA1_HMAC:
2372 ses->hs_mlen = 20;
2373 break;
2374 }
2375 }
2376 break;
2377 case CRYPTO_DES_CBC:
2378 case CRYPTO_3DES_CBC:
2379 case CRYPTO_AES_CBC:
2380 /* XXX this may read fewer, does it matter? */
2381 read_random(ses->hs_iv,
2382 c->cri_alg == CRYPTO_AES_CBC ?
2383 HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
2384 /*FALLTHROUGH*/
2385 case CRYPTO_ARC4:
2386 if (cry) {
2387 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2388 return (EINVAL);
2389 }
2390 cry = 1;
2391 break;
2392 default:
2393 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2394 return (EINVAL);
2395 }
2396 }
2397 if (mac == 0 && cry == 0) {
2398 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2399 return (EINVAL);
2400 }
2401
2402 *sidp = HIFN_SID(device_get_unit(sc->sc_dev), sesn);
2403
2404 return (0);
2405 }
2406
2407 /*
2408 * Deallocate a session.
2409 * XXX this routine should run a zero'd mac/encrypt key into context ram.
2410 * XXX to blow away any keys already stored there.
2411 */
2412 static int
2413 hifn_freesession(device_t dev, u_int64_t tid)
2414 {
2415 struct hifn_softc *sc = device_get_softc(dev);
2416 int session, error;
2417 u_int32_t sid = CRYPTO_SESID2LID(tid);
2418 unsigned long l_flags;
2419
2420 DPRINTF("%s()\n", __FUNCTION__);
2421
2422 KASSERT(sc != NULL, ("hifn_freesession: null softc"));
2423 if (sc == NULL) {
2424 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2425 return (EINVAL);
2426 }
2427
2428 HIFN_LOCK(sc);
2429 session = HIFN_SESSION(sid);
2430 if (session < sc->sc_nsessions) {
2431 bzero(&sc->sc_sessions[session], sizeof(struct hifn_session));
2432 error = 0;
2433 } else {
2434 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2435 error = EINVAL;
2436 }
2437 HIFN_UNLOCK(sc);
2438
2439 return (error);
2440 }
2441
2442 static int
2443 hifn_process(device_t dev, struct cryptop *crp, int hint)
2444 {
2445 struct hifn_softc *sc = device_get_softc(dev);
2446 struct hifn_command *cmd = NULL;
2447 int session, err, ivlen;
2448 struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
2449
2450 DPRINTF("%s()\n", __FUNCTION__);
2451
2452 if (crp == NULL || crp->crp_callback == NULL) {
2453 hifnstats.hst_invalid++;
2454 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2455 return (EINVAL);
2456 }
2457 session = HIFN_SESSION(crp->crp_sid);
2458
2459 if (sc == NULL || session >= sc->sc_nsessions) {
2460 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2461 err = EINVAL;
2462 goto errout;
2463 }
2464
2465 cmd = kmalloc(sizeof(struct hifn_command), SLAB_ATOMIC);
2466 if (cmd == NULL) {
2467 hifnstats.hst_nomem++;
2468 err = ENOMEM;
2469 goto errout;
2470 }
2471 memset(cmd, 0, sizeof(*cmd));
2472
2473 if (crp->crp_flags & CRYPTO_F_SKBUF) {
2474 cmd->src_skb = (struct sk_buff *)crp->crp_buf;
2475 cmd->dst_skb = (struct sk_buff *)crp->crp_buf;
2476 } else if (crp->crp_flags & CRYPTO_F_IOV) {
2477 cmd->src_io = (struct uio *)crp->crp_buf;
2478 cmd->dst_io = (struct uio *)crp->crp_buf;
2479 } else {
2480 cmd->src_buf = crp->crp_buf;
2481 cmd->dst_buf = crp->crp_buf;
2482 }
2483
2484 crd1 = crp->crp_desc;
2485 if (crd1 == NULL) {
2486 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2487 err = EINVAL;
2488 goto errout;
2489 }
2490 crd2 = crd1->crd_next;
2491
2492 if (crd2 == NULL) {
2493 if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
2494 crd1->crd_alg == CRYPTO_SHA1_HMAC ||
2495 crd1->crd_alg == CRYPTO_SHA1 ||
2496 crd1->crd_alg == CRYPTO_MD5) {
2497 maccrd = crd1;
2498 enccrd = NULL;
2499 } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
2500 crd1->crd_alg == CRYPTO_3DES_CBC ||
2501 crd1->crd_alg == CRYPTO_AES_CBC ||
2502 crd1->crd_alg == CRYPTO_ARC4) {
2503 if ((crd1->crd_flags & CRD_F_ENCRYPT) == 0)
2504 cmd->base_masks |= HIFN_BASE_CMD_DECODE;
2505 maccrd = NULL;
2506 enccrd = crd1;
2507 } else {
2508 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2509 err = EINVAL;
2510 goto errout;
2511 }
2512 } else {
2513 if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
2514 crd1->crd_alg == CRYPTO_SHA1_HMAC ||
2515 crd1->crd_alg == CRYPTO_MD5 ||
2516 crd1->crd_alg == CRYPTO_SHA1) &&
2517 (crd2->crd_alg == CRYPTO_DES_CBC ||
2518 crd2->crd_alg == CRYPTO_3DES_CBC ||
2519 crd2->crd_alg == CRYPTO_AES_CBC ||
2520 crd2->crd_alg == CRYPTO_ARC4) &&
2521 ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
2522 cmd->base_masks = HIFN_BASE_CMD_DECODE;
2523 maccrd = crd1;
2524 enccrd = crd2;
2525 } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
2526 crd1->crd_alg == CRYPTO_ARC4 ||
2527 crd1->crd_alg == CRYPTO_3DES_CBC ||
2528 crd1->crd_alg == CRYPTO_AES_CBC) &&
2529 (crd2->crd_alg == CRYPTO_MD5_HMAC ||
2530 crd2->crd_alg == CRYPTO_SHA1_HMAC ||
2531 crd2->crd_alg == CRYPTO_MD5 ||
2532 crd2->crd_alg == CRYPTO_SHA1) &&
2533 (crd1->crd_flags & CRD_F_ENCRYPT)) {
2534 enccrd = crd1;
2535 maccrd = crd2;
2536 } else {
2537 /*
2538 * We cannot order the 7751 as requested
2539 */
2540 DPRINTF("%s,%d: %s %d,%d,%d - EINVAL\n",__FILE__,__LINE__,__FUNCTION__, crd1->crd_alg, crd2->crd_alg, crd1->crd_flags & CRD_F_ENCRYPT);
2541 err = EINVAL;
2542 goto errout;
2543 }
2544 }
2545
2546 if (enccrd) {
2547 cmd->enccrd = enccrd;
2548 cmd->base_masks |= HIFN_BASE_CMD_CRYPT;
2549 switch (enccrd->crd_alg) {
2550 case CRYPTO_ARC4:
2551 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_RC4;
2552 break;
2553 case CRYPTO_DES_CBC:
2554 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_DES |
2555 HIFN_CRYPT_CMD_MODE_CBC |
2556 HIFN_CRYPT_CMD_NEW_IV;
2557 break;
2558 case CRYPTO_3DES_CBC:
2559 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_3DES |
2560 HIFN_CRYPT_CMD_MODE_CBC |
2561 HIFN_CRYPT_CMD_NEW_IV;
2562 break;
2563 case CRYPTO_AES_CBC:
2564 cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_AES |
2565 HIFN_CRYPT_CMD_MODE_CBC |
2566 HIFN_CRYPT_CMD_NEW_IV;
2567 break;
2568 default:
2569 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2570 err = EINVAL;
2571 goto errout;
2572 }
2573 if (enccrd->crd_alg != CRYPTO_ARC4) {
2574 ivlen = ((enccrd->crd_alg == CRYPTO_AES_CBC) ?
2575 HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
2576 if (enccrd->crd_flags & CRD_F_ENCRYPT) {
2577 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
2578 bcopy(enccrd->crd_iv, cmd->iv, ivlen);
2579 else
2580 bcopy(sc->sc_sessions[session].hs_iv,
2581 cmd->iv, ivlen);
2582
2583 if ((enccrd->crd_flags & CRD_F_IV_PRESENT)
2584 == 0) {
2585 crypto_copyback(crp->crp_flags,
2586 crp->crp_buf, enccrd->crd_inject,
2587 ivlen, cmd->iv);
2588 }
2589 } else {
2590 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
2591 bcopy(enccrd->crd_iv, cmd->iv, ivlen);
2592 else {
2593 crypto_copydata(crp->crp_flags,
2594 crp->crp_buf, enccrd->crd_inject,
2595 ivlen, cmd->iv);
2596 }
2597 }
2598 }
2599
2600 if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT)
2601 cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
2602 cmd->ck = enccrd->crd_key;
2603 cmd->cklen = enccrd->crd_klen >> 3;
2604 cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
2605
2606 /*
2607 * Need to specify the size for the AES key in the masks.
2608 */
2609 if ((cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) ==
2610 HIFN_CRYPT_CMD_ALG_AES) {
2611 switch (cmd->cklen) {
2612 case 16:
2613 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_128;
2614 break;
2615 case 24:
2616 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_192;
2617 break;
2618 case 32:
2619 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_256;
2620 break;
2621 default:
2622 DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
2623 err = EINVAL;
2624 goto errout;
2625 }
2626 }
2627 }
2628
2629 if (maccrd) {
2630 cmd->maccrd = maccrd;
2631 cmd->base_masks |= HIFN_BASE_CMD_MAC;
2632
2633 switch (maccrd->crd_alg) {
2634 case CRYPTO_MD5:
2635 cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
2636 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
2637 HIFN_MAC_CMD_POS_IPSEC;
2638 break;
2639 case CRYPTO_MD5_HMAC:
2640 cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
2641 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
2642 HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
2643 break;
2644 case CRYPTO_SHA1:
2645 cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
2646 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
2647 HIFN_MAC_CMD_POS_IPSEC;
2648 break;
2649 case CRYPTO_SHA1_HMAC:
2650 cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
2651 HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
2652 HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
2653 break;
2654 }
2655
2656 if (maccrd->crd_alg == CRYPTO_SHA1_HMAC ||
2657 maccrd->crd_alg == CRYPTO_MD5_HMAC) {
2658 cmd->mac_masks |= HIFN_MAC_CMD_NEW_KEY;
2659 bcopy(maccrd->crd_key, cmd->mac, maccrd->crd_klen >> 3);
2660 bzero(cmd->mac + (maccrd->crd_klen >> 3),
2661 HIFN_MAC_KEY_LENGTH - (maccrd->crd_klen >> 3));
2662 }
2663 }
2664
2665 cmd->crp = crp;
2666 cmd->session_num = session;
2667 cmd->softc = sc;
2668
2669 err = hifn_crypto(sc, cmd, crp, hint);
2670 if (!err) {
2671 return 0;
2672 } else if (err == ERESTART) {
2673 /*
2674 * There weren't enough resources to dispatch the request
2675 * to the part. Notify the caller so they'll requeue this
2676 * request and resubmit it again soon.
2677 */
2678 #ifdef HIFN_DEBUG
2679 if (hifn_debug)
2680 device_printf(sc->sc_dev, "requeue request\n");
2681 #endif
2682 kfree(cmd);
2683 sc->sc_needwakeup |= CRYPTO_SYMQ;
2684 return (err);
2685 }
2686
2687 errout:
2688 if (cmd != NULL)
2689 kfree(cmd);
2690 if (err == EINVAL)
2691 hifnstats.hst_invalid++;
2692 else
2693 hifnstats.hst_nomem++;