+
+/*
+ * Copyright (c) 2008 Daniel Mueller (daniel@danm.de)
+ * Copyright (c) 2007 David McCullough (david_mccullough@securecomputing.com)
+ * Copyright (c) 2000 Jason L. Wright (jason@thought.net)
+ * Copyright (c) 2000 Theo de Raadt (deraadt@openbsd.org)
+ * Copyright (c) 2001 Patrik Lindergren (patrik@ipunplugged.com)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Effort sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F30602-01-2-0537.
+ *
+ */
+#undef UBSEC_DEBUG
+#undef UBSEC_VERBOSE_DEBUG
+
+#ifdef UBSEC_VERBOSE_DEBUG
+#define UBSEC_DEBUG
+#endif
+
+/*
+ * uBsec BCM5365 hardware crypto accelerator
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/proc_fs.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fs.h>
+#include <linux/random.h>
+#include <linux/skbuff.h>
+#include <linux/stat.h>
+#include <asm/io.h>
+
+#include <linux/ssb/ssb.h>
+
+/*
+ * BSD queue
+ */
+//#include "bsdqueue.h"
+
+/*
+ * OCF
+ */
+#include <cryptodev.h>
+#include <uio.h>
+
+#define HMAC_HACK 1
+
+#define HMAC_HACK 1
+#ifdef HMAC_HACK
+#include <safe/hmachack.h>
+#include <safe/md5.h>
+#include <safe/md5.c>
+#include <safe/sha1.h>
+#include <safe/sha1.c>
+#endif
+
+#include "bsdqueue.h"
+#include "ubsecreg.h"
+#include "ubsecvar.h"
+
+#define DRV_MODULE_NAME "ubsec_ssb"
+#define PFX DRV_MODULE_NAME ": "
+#define DRV_MODULE_VERSION "0.02"
+#define DRV_MODULE_RELDATE "Feb 21, 2009"
+
+#if 1
+#define DPRINTF(a...) \
+ if (debug) \
+ { \
+ printk(DRV_MODULE_NAME ": " a); \
+ }
+#else
+#define DPRINTF(a...)
+#endif
+
+/*
+ * Prototypes
+ */
+static irqreturn_t ubsec_ssb_isr(int, void *, struct pt_regs *);
+static int __devinit ubsec_ssb_probe(struct ssb_device *sdev,
+ const struct ssb_device_id *ent);
+static void __devexit ubsec_ssb_remove(struct ssb_device *sdev);
+int ubsec_attach(struct ssb_device *sdev, const struct ssb_device_id *ent,
+ struct device *self);
+static void ubsec_setup_mackey(struct ubsec_session *ses, int algo,
+ caddr_t key, int klen);
+static int dma_map_skb(struct ubsec_softc *sc,
+ struct ubsec_dma_alloc* q_map, struct sk_buff *skb, int *mlen);
+static int dma_map_uio(struct ubsec_softc *sc,
+ struct ubsec_dma_alloc *q_map, struct uio *uio, int *mlen);
+static void dma_unmap(struct ubsec_softc *sc,
+ struct ubsec_dma_alloc *q_map, int mlen);
+static int ubsec_dmamap_aligned(struct ubsec_softc *sc,
+ const struct ubsec_dma_alloc *q_map, int mlen);
+
+#ifdef UBSEC_DEBUG
+static int proc_read(char *buf, char **start, off_t offset,
+ int size, int *peof, void *data);
+#endif
+
+void ubsec_reset_board(struct ubsec_softc *);
+void ubsec_init_board(struct ubsec_softc *);
+void ubsec_cleanchip(struct ubsec_softc *);
+void ubsec_totalreset(struct ubsec_softc *);
+int ubsec_free_q(struct ubsec_softc*, struct ubsec_q *);
+
+static int ubsec_newsession(device_t, u_int32_t *, struct cryptoini *);
+static int ubsec_freesession(device_t, u_int64_t);
+static int ubsec_process(device_t, struct cryptop *, int);
+
+void ubsec_callback(struct ubsec_softc *, struct ubsec_q *);
+void ubsec_feed(struct ubsec_softc *);
+void ubsec_mcopy(struct sk_buff *, struct sk_buff *, int, int);
+void ubsec_dma_free(struct ubsec_softc *, struct ubsec_dma_alloc *);
+int ubsec_dma_malloc(struct ubsec_softc *, struct ubsec_dma_alloc *,
+ size_t, int);
+
+/* DEBUG crap... */
+void ubsec_dump_pb(struct ubsec_pktbuf *);
+void ubsec_dump_mcr(struct ubsec_mcr *);
+
+#define READ_REG(sc,r) \
+ ssb_read32((sc)->sdev, (r));
+#define WRITE_REG(sc,r,val) \
+ ssb_write32((sc)->sdev, (r), (val));
+#define READ_REG_SDEV(sdev,r) \
+ ssb_read32((sdev), (r));
+#define WRITE_REG_SDEV(sdev,r,val) \
+ ssb_write32((sdev), (r), (val));
+
+#define SWAP32(x) (x) = htole32(ntohl((x)))
+#define HTOLE32(x) (x) = htole32(x)
+
+#ifdef __LITTLE_ENDIAN
+#define letoh16(x) (x)
+#define letoh32(x) (x)
+#endif
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Enable debug output");
+
+#define UBSEC_SSB_MAX_CHIPS 1
+static struct ubsec_softc *ubsec_chip_idx[UBSEC_SSB_MAX_CHIPS];
+static struct ubsec_stats ubsecstats;
+
+#ifdef UBSEC_DEBUG
+static struct proc_dir_entry *procdebug;
+#endif
+
+static struct ssb_device_id ubsec_ssb_tbl[] = {
+ /* Broadcom BCM5365P IPSec Core */
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_IPSEC, SSB_ANY_REV),
+ SSB_DEVTABLE_END
+};
+
+static struct ssb_driver ubsec_ssb_driver = {
+ .name = DRV_MODULE_NAME,
+ .id_table = ubsec_ssb_tbl,
+ .probe = ubsec_ssb_probe,
+ .remove = __devexit_p(ubsec_ssb_remove),
+ /*
+ .suspend = ubsec_ssb_suspend,
+ .resume = ubsec_ssb_resume
+ */
+};
+
+static device_method_t ubsec_ssb_methods = {
+ /* crypto device methods */
+ DEVMETHOD(cryptodev_newsession, ubsec_newsession),
+ DEVMETHOD(cryptodev_freesession,ubsec_freesession),
+ DEVMETHOD(cryptodev_process, ubsec_process),
+};
+
+#ifdef UBSEC_DEBUG
+static int
+proc_read(char *buf, char **start, off_t offset,
+ int size, int *peof, void *data)
+{
+ int i = 0, byteswritten = 0, ret;
+ unsigned int stat, ctrl;
+#ifdef UBSEC_VERBOSE_DEBUG
+ struct ubsec_q *q;
+ struct ubsec_dma *dmap;
+#endif
+
+ while ((i < UBSEC_SSB_MAX_CHIPS) && (ubsec_chip_idx[i] != NULL))
+ {
+ struct ubsec_softc *sc = ubsec_chip_idx[i];
+
+ stat = READ_REG(sc, BS_STAT);
+ ctrl = READ_REG(sc, BS_CTRL);
+ ret = snprintf((buf + byteswritten),
+ (size - byteswritten) ,
+ "DEV %d, DMASTAT %08x, DMACTRL %08x\n", i, stat, ctrl);
+
+ byteswritten += ret;
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ printf("DEV %d, DMASTAT %08x, DMACTRL %08x\n", i, stat, ctrl);
+
+ /* Dump all queues MCRs */
+ if (!BSD_SIMPLEQ_EMPTY(&sc->sc_qchip)) {
+ BSD_SIMPLEQ_FOREACH(q, &sc->sc_qchip, q_next)
+ {
+ dmap = q->q_dma;
+ ubsec_dump_mcr(&dmap->d_dma->d_mcr);
+ }
+ }
+#endif
+
+ i++;
+ }
+
+ *peof = 1;
+
+ return byteswritten;
+}
+#endif
+
+/*
+ * map in a given sk_buff
+ */
+static int
+dma_map_skb(struct ubsec_softc *sc, struct ubsec_dma_alloc* q_map, struct sk_buff *skb, int *mlen)
+{
+ int i = 0;
+ dma_addr_t tmp;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ /*
+ * We support only a limited number of fragments.
+ */
+ if (unlikely((skb_shinfo(skb)->nr_frags + 1) >= UBS_MAX_SCATTER))
+ {
+ printk(KERN_ERR "Only %d scatter fragments are supported.\n", UBS_MAX_SCATTER);
+ return (-ENOMEM);
+ }
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s - map %d 0x%x %d\n", __FUNCTION__, 0, (unsigned int)skb->data, skb_headlen(skb));
+#endif
+
+ /* first data package */
+ tmp = dma_map_single(sc->sc_dv,
+ skb->data,
+ skb_headlen(skb),
+ DMA_BIDIRECTIONAL);
+
+ q_map[i].dma_paddr = tmp;
+ q_map[i].dma_vaddr = skb->data;
+ q_map[i].dma_size = skb_headlen(skb);
+
+ if (unlikely(tmp == 0))
+ {
+ printk(KERN_ERR "Could not map memory region for dma.\n");
+ return (-EINVAL);
+ }
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s - map %d done physical addr 0x%x\n", __FUNCTION__, 0, (unsigned int)tmp);
+#endif
+
+
+ /* all other data packages */
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s - map %d 0x%x %d\n", __FUNCTION__, i + 1,
+ (unsigned int)page_address(skb_shinfo(skb)->frags[i].page) +
+ skb_shinfo(skb)->frags[i].page_offset, skb_shinfo(skb)->frags[i].size);
+#endif
+
+ tmp = dma_map_single(sc->sc_dv,
+ page_address(skb_shinfo(skb)->frags[i].page) +
+ skb_shinfo(skb)->frags[i].page_offset,
+ skb_shinfo(skb)->frags[i].size,
+ DMA_BIDIRECTIONAL);
+
+ q_map[i + 1].dma_paddr = tmp;
+ q_map[i + 1].dma_vaddr = (void*)(page_address(skb_shinfo(skb)->frags[i].page) +
+ skb_shinfo(skb)->frags[i].page_offset);
+ q_map[i + 1].dma_size = skb_shinfo(skb)->frags[i].size;
+
+ if (unlikely(tmp == 0))
+ {
+ printk(KERN_ERR "Could not map memory region for dma.\n");
+ return (-EINVAL);
+ }
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s - map %d done physical addr 0x%x\n", __FUNCTION__, i + 1, (unsigned int)tmp);
+#endif
+
+ }
+ *mlen = i + 1;
+
+ return(0);
+}
+
+/*
+ * map in a given uio buffer
+ */
+
+static int
+dma_map_uio(struct ubsec_softc *sc, struct ubsec_dma_alloc *q_map, struct uio *uio, int *mlen)
+{
+ struct iovec *iov = uio->uio_iov;
+ int n;
+ dma_addr_t tmp;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ /*
+ * We support only a limited number of fragments.
+ */
+ if (unlikely(uio->uio_iovcnt >= UBS_MAX_SCATTER))
+ {
+ printk(KERN_ERR "Only %d scatter fragments are supported.\n", UBS_MAX_SCATTER);
+ return (-ENOMEM);
+ }
+
+ for (n = 0; n < uio->uio_iovcnt; n++) {
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s - map %d 0x%x %d\n", __FUNCTION__, n, (unsigned int)iov->iov_base, iov->iov_len);
+#endif
+ tmp = dma_map_single(sc->sc_dv,
+ iov->iov_base,
+ iov->iov_len,
+ DMA_BIDIRECTIONAL);
+
+ q_map[n].dma_paddr = tmp;
+ q_map[n].dma_vaddr = iov->iov_base;
+ q_map[n].dma_size = iov->iov_len;
+
+ if (unlikely(tmp == 0))
+ {
+ printk(KERN_ERR "Could not map memory region for dma.\n");
+ return (-EINVAL);
+ }
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s - map %d done physical addr 0x%x\n", __FUNCTION__, n, (unsigned int)tmp);
+#endif
+
+ iov++;
+ }
+ *mlen = n;
+
+ return(0);
+}
+
+static void
+dma_unmap(struct ubsec_softc *sc, struct ubsec_dma_alloc *q_map, int mlen)
+{
+ int i;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ for(i = 0; i < mlen; i++)
+ {
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s - unmap %d 0x%x %d\n", __FUNCTION__, i, (unsigned int)q_map[i].dma_paddr, q_map[i].dma_size);
+#endif
+ dma_unmap_single(sc->sc_dv,
+ q_map[i].dma_paddr,
+ q_map[i].dma_size,
+ DMA_BIDIRECTIONAL);
+ }
+ return;
+}
+
+/*
+ * Is the operand suitable aligned for direct DMA. Each
+ * segment must be aligned on a 32-bit boundary and all
+ * but the last segment must be a multiple of 4 bytes.
+ */
+static int
+ubsec_dmamap_aligned(struct ubsec_softc *sc, const struct ubsec_dma_alloc *q_map, int mlen)
+{
+ int i;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ for (i = 0; i < mlen; i++) {
+ if (q_map[i].dma_paddr & 3)
+ return (0);
+ if (i != (mlen - 1) && (q_map[i].dma_size & 3))
+ return (0);
+ }
+ return (1);
+}
+
+
+#define N(a) (sizeof(a) / sizeof (a[0]))
+static void
+ubsec_setup_mackey(struct ubsec_session *ses, int algo, caddr_t key, int klen)
+{
+#ifdef HMAC_HACK
+ MD5_CTX md5ctx;
+ SHA1_CTX sha1ctx;
+ int i;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ for (i = 0; i < klen; i++)
+ key[i] ^= HMAC_IPAD_VAL;
+
+ if (algo == CRYPTO_MD5_HMAC) {
+ MD5Init(&md5ctx);
+ MD5Update(&md5ctx, key, klen);
+ MD5Update(&md5ctx, hmac_ipad_buffer, MD5_HMAC_BLOCK_LEN - klen);
+ bcopy(md5ctx.md5_st8, ses->ses_hminner, sizeof(md5ctx.md5_st8));
+ } else {
+ SHA1Init(&sha1ctx);
+ SHA1Update(&sha1ctx, key, klen);
+ SHA1Update(&sha1ctx, hmac_ipad_buffer,
+ SHA1_HMAC_BLOCK_LEN - klen);
+ bcopy(sha1ctx.h.b32, ses->ses_hminner, sizeof(sha1ctx.h.b32));
+ }
+
+ for (i = 0; i < klen; i++)
+ key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
+
+ if (algo == CRYPTO_MD5_HMAC) {
+ MD5Init(&md5ctx);
+ MD5Update(&md5ctx, key, klen);
+ MD5Update(&md5ctx, hmac_opad_buffer, MD5_HMAC_BLOCK_LEN - klen);
+ bcopy(md5ctx.md5_st8, ses->ses_hmouter, sizeof(md5ctx.md5_st8));
+ } else {
+ SHA1Init(&sha1ctx);
+ SHA1Update(&sha1ctx, key, klen);
+ SHA1Update(&sha1ctx, hmac_opad_buffer,
+ SHA1_HMAC_BLOCK_LEN - klen);
+ bcopy(sha1ctx.h.b32, ses->ses_hmouter, sizeof(sha1ctx.h.b32));
+ }
+
+ for (i = 0; i < klen; i++)
+ key[i] ^= HMAC_OPAD_VAL;
+
+#else /* HMAC_HACK */
+ DPRINTF("md5/sha not implemented\n");
+#endif /* HMAC_HACK */
+}
+#undef N
+
+static int
+__devinit ubsec_ssb_probe(struct ssb_device *sdev,
+ const struct ssb_device_id *ent)
+{
+ int err;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ err = ssb_bus_powerup(sdev->bus, 0);
+ if (err) {
+ dev_err(sdev->dev, "Failed to powerup the bus\n");
+ goto err_out;
+ }
+
+ err = request_irq(sdev->irq, (irq_handler_t)ubsec_ssb_isr,
+ IRQF_DISABLED | IRQF_SHARED, DRV_MODULE_NAME, sdev);
+ if (err) {
+ dev_err(sdev->dev, "Could not request irq\n");
+ goto err_out_powerdown;
+ }
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
+ err = dma_set_mask(sdev->dma_dev, DMA_BIT_MASK(32)) ||
+ dma_set_coherent_mask(sdev->dma_dev, DMA_BIT_MASK(32));
+#else
+ err = ssb_dma_set_mask(sdev, DMA_32BIT_MASK);
+#endif
+ if (err) {
+ dev_err(sdev->dev,
+ "Required 32BIT DMA mask unsupported by the system.\n");
+ goto err_out_free_irq;
+ }
+
+ printk(KERN_INFO "Sentry5(tm) ROBOGateway(tm) IPSec Core at IRQ %u\n",
+ sdev->irq);
+
+ DPRINTF("Vendor: %x, core id: %x, revision: %x\n",
+ sdev->id.vendor, sdev->id.coreid, sdev->id.revision);
+
+ ssb_device_enable(sdev, 0);
+
+ if (ubsec_attach(sdev, ent, sdev->dev) != 0)
+ goto err_out_disable;
+
+#ifdef UBSEC_DEBUG
+ procdebug = create_proc_entry(DRV_MODULE_NAME, S_IRUSR, NULL);
+ if (procdebug)
+ {
+ procdebug->read_proc = proc_read;
+ procdebug->data = NULL;
+ } else
+ DPRINTF("Unable to create proc file.\n");
+#endif
+
+ return 0;
+
+err_out_disable:
+ ssb_device_disable(sdev, 0);
+
+err_out_free_irq:
+ free_irq(sdev->irq, sdev);
+
+err_out_powerdown:
+ ssb_bus_may_powerdown(sdev->bus);
+
+err_out:
+ return err;
+}
+
+static void __devexit ubsec_ssb_remove(struct ssb_device *sdev) {
+
+ struct ubsec_softc *sc;
+ unsigned int ctrlflgs;
+ struct ubsec_dma *dmap;
+ u_int32_t i;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ ctrlflgs = READ_REG_SDEV(sdev, BS_CTRL);
+ /* disable all IPSec Core interrupts globally */
+ ctrlflgs ^= (BS_CTRL_MCR1INT | BS_CTRL_MCR2INT |
+ BS_CTRL_DMAERR);
+ WRITE_REG_SDEV(sdev, BS_CTRL, ctrlflgs);
+
+ free_irq(sdev->irq, sdev);
+
+ sc = (struct ubsec_softc *)ssb_get_drvdata(sdev);
+
+ /* unregister all crypto algorithms */
+ crypto_unregister_all(sc->sc_cid);
+
+ /* Free queue / dma memory */
+ for (i = 0; i < UBS_MAX_NQUEUE; i++) {
+ struct ubsec_q *q;
+
+ q = sc->sc_queuea[i];
+ if (q != NULL)
+ {
+ dmap = q->q_dma;
+ if (dmap != NULL)
+ {
+ ubsec_dma_free(sc, &dmap->d_alloc);
+ q->q_dma = NULL;
+ }
+ kfree(q);
+ }
+ sc->sc_queuea[i] = NULL;
+ }
+
+ ssb_device_disable(sdev, 0);
+ ssb_bus_may_powerdown(sdev->bus);
+ ssb_set_drvdata(sdev, NULL);
+
+#ifdef UBSEC_DEBUG
+ if (procdebug)
+ remove_proc_entry(DRV_MODULE_NAME, NULL);
+#endif
+
+}
+
+
+int
+ubsec_attach(struct ssb_device *sdev, const struct ssb_device_id *ent,
+ struct device *self)
+{
+ struct ubsec_softc *sc = NULL;
+ struct ubsec_dma *dmap;
+ u_int32_t i;
+ static int num_chips = 0;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ sc = (struct ubsec_softc *) kmalloc(sizeof(*sc), GFP_KERNEL);
+ if (!sc)
+ return(-ENOMEM);
+ memset(sc, 0, sizeof(*sc));
+
+ sc->sc_dv = sdev->dev;
+ sc->sdev = sdev;
+
+ spin_lock_init(&sc->sc_ringmtx);
+
+ softc_device_init(sc, "ubsec_ssb", num_chips, ubsec_ssb_methods);
+
+ /* Maybe someday there are boards with more than one chip available */
+ if (num_chips < UBSEC_SSB_MAX_CHIPS) {
+ ubsec_chip_idx[device_get_unit(sc->sc_dev)] = sc;
+ num_chips++;
+ }
+
+ ssb_set_drvdata(sdev, sc);
+
+ BSD_SIMPLEQ_INIT(&sc->sc_queue);
+ BSD_SIMPLEQ_INIT(&sc->sc_qchip);
+ BSD_SIMPLEQ_INIT(&sc->sc_queue2);
+ BSD_SIMPLEQ_INIT(&sc->sc_qchip2);
+ BSD_SIMPLEQ_INIT(&sc->sc_q2free);
+
+ sc->sc_statmask = BS_STAT_MCR1_DONE | BS_STAT_DMAERR;
+
+ sc->sc_cid = crypto_get_driverid(softc_get_device(sc), CRYPTOCAP_F_HARDWARE);
+ if (sc->sc_cid < 0) {
+ device_printf(sc->sc_dev, "could not get crypto driver id\n");
+ return -1;
+ }
+
+ BSD_SIMPLEQ_INIT(&sc->sc_freequeue);
+ dmap = sc->sc_dmaa;
+ for (i = 0; i < UBS_MAX_NQUEUE; i++, dmap++) {
+ struct ubsec_q *q;
+
+ q = (struct ubsec_q *)kmalloc(sizeof(struct ubsec_q), GFP_KERNEL);
+ if (q == NULL) {
+ printf(": can't allocate queue buffers\n");
+ break;
+ }
+
+ if (ubsec_dma_malloc(sc, &dmap->d_alloc, sizeof(struct ubsec_dmachunk),0)) {
+ printf(": can't allocate dma buffers\n");
+ kfree(q);
+ break;
+ }
+ dmap->d_dma = (struct ubsec_dmachunk *)dmap->d_alloc.dma_vaddr;
+
+ q->q_dma = dmap;
+ sc->sc_queuea[i] = q;
+
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
+ }
+
+ /*
+ * Reset Broadcom chip
+ */
+ ubsec_reset_board(sc);
+
+ /*
+ * Init Broadcom chip
+ */
+ ubsec_init_board(sc);
+
+ /* supported crypto algorithms */
+ crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
+ crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0);
+
+ if (sc->sc_flags & UBS_FLAGS_AES) {
+ crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0);
+ printf(KERN_INFO DRV_MODULE_NAME ": DES 3DES AES128 AES192 AES256 MD5_HMAC SHA1_HMAC\n");
+ }
+ else
+ printf(KERN_INFO DRV_MODULE_NAME ": DES 3DES MD5_HMAC SHA1_HMAC\n");
+
+ crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0);
+ crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0);
+
+ return 0;
+}
+
+/*
+ * UBSEC Interrupt routine
+ */
+static irqreturn_t
+ubsec_ssb_isr(int irq, void *arg, struct pt_regs *regs)
+{
+ struct ubsec_softc *sc = NULL;
+ volatile u_int32_t stat;
+ struct ubsec_q *q;
+ struct ubsec_dma *dmap;
+ int npkts = 0, i;
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ sc = (struct ubsec_softc *)ssb_get_drvdata(arg);
+
+ stat = READ_REG(sc, BS_STAT);
+
+ stat &= sc->sc_statmask;
+ if (stat == 0)
+ return IRQ_NONE;
+
+ WRITE_REG(sc, BS_STAT, stat); /* IACK */
+
+ /*
+ * Check to see if we have any packets waiting for us
+ */
+ if ((stat & BS_STAT_MCR1_DONE)) {
+ while (!BSD_SIMPLEQ_EMPTY(&sc->sc_qchip)) {
+ q = BSD_SIMPLEQ_FIRST(&sc->sc_qchip);
+ dmap = q->q_dma;
+
+ if ((dmap->d_dma->d_mcr.mcr_flags & htole16(UBS_MCR_DONE)) == 0)
+ {
+ DPRINTF("error while processing MCR. Flags = %x\n", dmap->d_dma->d_mcr.mcr_flags);
+ break;
+ }
+
+ BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
+
+ npkts = q->q_nstacked_mcrs;
+ /*
+ * search for further sc_qchip ubsec_q's that share
+ * the same MCR, and complete them too, they must be
+ * at the top.
+ */
+ for (i = 0; i < npkts; i++) {
+ if(q->q_stacked_mcr[i])
+ ubsec_callback(sc, q->q_stacked_mcr[i]);
+ else
+ break;
+ }
+ ubsec_callback(sc, q);
+ }
+
+ /*
+ * Don't send any more packet to chip if there has been
+ * a DMAERR.
+ */
+ if (likely(!(stat & BS_STAT_DMAERR)))
+ ubsec_feed(sc);
+ else
+ DPRINTF("DMA error occurred. Stop feeding crypto chip.\n");
+ }
+
+ /*
+ * Check to see if we got any DMA Error
+ */
+ if (stat & BS_STAT_DMAERR) {
+ volatile u_int32_t a = READ_REG(sc, BS_ERR);
+
+ printf(KERN_ERR "%s: dmaerr %s@%08x\n", DRV_MODULE_NAME,
+ (a & BS_ERR_READ) ? "read" : "write", a & BS_ERR_ADDR);
+
+ ubsecstats.hst_dmaerr++;
+ ubsec_totalreset(sc);
+ ubsec_feed(sc);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * ubsec_feed() - aggregate and post requests to chip
+ * It is assumed that the caller set splnet()
+ */
+void
+ubsec_feed(struct ubsec_softc *sc)
+{
+#ifdef UBSEC_VERBOSE_DEBUG
+ static int max;
+#endif
+ struct ubsec_q *q, *q2;
+ int npkts, i;
+ void *v;
+ u_int32_t stat;
+
+ npkts = sc->sc_nqueue;
+ if (npkts > UBS_MAX_AGGR)
+ npkts = UBS_MAX_AGGR;
+ if (npkts < 2)
+ goto feed1;
+
+ stat = READ_REG(sc, BS_STAT);
+
+ if (stat & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) {
+ if(stat & BS_STAT_DMAERR) {
+ ubsec_totalreset(sc);
+ ubsecstats.hst_dmaerr++;
+ }
+ return;
+ }
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("merging %d records\n", npkts);
+
+ /* XXX temporary aggregation statistics reporting code */
+ if (max < npkts) {
+ max = npkts;
+ DPRINTF("%s: new max aggregate %d\n", DRV_MODULE_NAME, max);
+ }
+#endif /* UBSEC_VERBOSE_DEBUG */
+
+ q = BSD_SIMPLEQ_FIRST(&sc->sc_queue);
+ BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
+ --sc->sc_nqueue;
+
+#if 0
+ /*
+ * XXX
+ * We use dma_map_single() - no sync required!
+ */
+
+ bus_dmamap_sync(sc->sc_dmat, q->q_src_map,
+ 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
+ if (q->q_dst_map != NULL)
+ bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
+ 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD);
+#endif
+
+ q->q_nstacked_mcrs = npkts - 1; /* Number of packets stacked */
+
+ for (i = 0; i < q->q_nstacked_mcrs; i++) {
+ q2 = BSD_SIMPLEQ_FIRST(&sc->sc_queue);
+
+#if 0
+ bus_dmamap_sync(sc->sc_dmat, q2->q_src_map,
+ 0, q2->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
+ if (q2->q_dst_map != NULL)
+ bus_dmamap_sync(sc->sc_dmat, q2->q_dst_map,
+ 0, q2->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD);
+#endif
+ BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
+ --sc->sc_nqueue;
+
+ v = ((char *)&q2->q_dma->d_dma->d_mcr) + sizeof(struct ubsec_mcr) -
+ sizeof(struct ubsec_mcr_add);
+ bcopy(v, &q->q_dma->d_dma->d_mcradd[i], sizeof(struct ubsec_mcr_add));
+ q->q_stacked_mcr[i] = q2;
+ }
+ q->q_dma->d_dma->d_mcr.mcr_pkts = htole16(npkts);
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
+#if 0
+ bus_dmamap_sync(sc->sc_dmat, q->q_dma->d_alloc.dma_map,
+ 0, q->q_dma->d_alloc.dma_map->dm_mapsize,
+ BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
+#endif
+ WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_mcr));
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("feed (1): q->chip %p %08x %08x\n", q,
+ (u_int32_t)q->q_dma->d_alloc.dma_paddr,
+ (u_int32_t)(q->q_dma->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_mcr)));
+#endif /* UBSEC_DEBUG */
+ return;
+
+feed1:
+ while (!BSD_SIMPLEQ_EMPTY(&sc->sc_queue)) {
+ stat = READ_REG(sc, BS_STAT);
+
+ if (stat & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) {
+ if(stat & BS_STAT_DMAERR) {
+ ubsec_totalreset(sc);
+ ubsecstats.hst_dmaerr++;
+ }
+ break;
+ }
+
+ q = BSD_SIMPLEQ_FIRST(&sc->sc_queue);
+
+#if 0
+ bus_dmamap_sync(sc->sc_dmat, q->q_src_map,
+ 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE);
+ if (q->q_dst_map != NULL)
+ bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
+ 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD);
+ bus_dmamap_sync(sc->sc_dmat, q->q_dma->d_alloc.dma_map,
+ 0, q->q_dma->d_alloc.dma_map->dm_mapsize,
+ BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
+#endif
+
+ WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_mcr));
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("feed (2): q->chip %p %08x %08x\n", q,
+ (u_int32_t)q->q_dma->d_alloc.dma_paddr,
+ (u_int32_t)(q->q_dma->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_mcr)));
+#endif /* UBSEC_DEBUG */
+ BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
+ --sc->sc_nqueue;
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
+ }
+}
+
+/*
+ * Allocate a new 'session' and return an encoded session id. 'sidp'
+ * contains our registration id, and should contain an encoded session
+ * id on successful allocation.
+ */
+static int
+ubsec_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
+{
+ struct cryptoini *c, *encini = NULL, *macini = NULL;
+ struct ubsec_softc *sc = NULL;
+ struct ubsec_session *ses = NULL;
+ int sesn, i;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ if (sidp == NULL || cri == NULL)
+ return (EINVAL);
+
+ sc = device_get_softc(dev);
+
+ if (sc == NULL)
+ return (EINVAL);
+
+ for (c = cri; c != NULL; c = c->cri_next) {
+ if (c->cri_alg == CRYPTO_MD5_HMAC ||
+ c->cri_alg == CRYPTO_SHA1_HMAC) {
+ if (macini)
+ return (EINVAL);
+ macini = c;
+ } else if (c->cri_alg == CRYPTO_DES_CBC ||
+ c->cri_alg == CRYPTO_3DES_CBC ||
+ c->cri_alg == CRYPTO_AES_CBC) {
+ if (encini)
+ return (EINVAL);
+ encini = c;
+ } else
+ return (EINVAL);
+ }
+ if (encini == NULL && macini == NULL)
+ return (EINVAL);
+
+ if (sc->sc_sessions == NULL) {
+ ses = sc->sc_sessions = (struct ubsec_session *)kmalloc(
+ sizeof(struct ubsec_session), SLAB_ATOMIC);
+ if (ses == NULL)
+ return (ENOMEM);
+ memset(ses, 0, sizeof(struct ubsec_session));
+ sesn = 0;
+ sc->sc_nsessions = 1;
+ } else {
+ for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
+ if (sc->sc_sessions[sesn].ses_used == 0) {
+ ses = &sc->sc_sessions[sesn];
+ break;
+ }
+ }
+
+ if (ses == NULL) {
+ sesn = sc->sc_nsessions;
+ ses = (struct ubsec_session *)kmalloc((sesn + 1) *
+ sizeof(struct ubsec_session), SLAB_ATOMIC);
+ if (ses == NULL)
+ return (ENOMEM);
+ memset(ses, 0, (sesn + 1) * sizeof(struct ubsec_session));
+ bcopy(sc->sc_sessions, ses, sesn *
+ sizeof(struct ubsec_session));
+ bzero(sc->sc_sessions, sesn *
+ sizeof(struct ubsec_session));
+ kfree(sc->sc_sessions);
+ sc->sc_sessions = ses;
+ ses = &sc->sc_sessions[sesn];
+ sc->sc_nsessions++;
+ }
+ }
+
+ bzero(ses, sizeof(struct ubsec_session));
+ ses->ses_used = 1;
+ if (encini) {
+ /* get an IV */
+ /* XXX may read fewer than requested */
+ read_random(ses->ses_iv, sizeof(ses->ses_iv));
+
+ /* Go ahead and compute key in ubsec's byte order */
+ if (encini->cri_alg == CRYPTO_DES_CBC) {
+ /* DES uses the same key three times:
+ * 1st encrypt -> 2nd decrypt -> 3nd encrypt */
+ bcopy(encini->cri_key, &ses->ses_key[0], 8);
+ bcopy(encini->cri_key, &ses->ses_key[2], 8);
+ bcopy(encini->cri_key, &ses->ses_key[4], 8);
+ ses->ses_keysize = 192; /* Fake! Actually its only 64bits ..
+ oh no it is even less: 54bits. */
+ } else if(encini->cri_alg == CRYPTO_3DES_CBC) {
+ bcopy(encini->cri_key, ses->ses_key, 24);
+ ses->ses_keysize = 192;
+ } else if(encini->cri_alg == CRYPTO_AES_CBC) {
+ ses->ses_keysize = encini->cri_klen;
+
+ if (ses->ses_keysize != 128 &&
+ ses->ses_keysize != 192 &&
+ ses->ses_keysize != 256)
+ {
+ DPRINTF("unsupported AES key size: %d\n", ses->ses_keysize);
+ return (EINVAL);
+ }
+ bcopy(encini->cri_key, ses->ses_key, (ses->ses_keysize / 8));
+ }
+
+ /* Hardware requires the keys in little endian byte order */
+ for (i=0; i < (ses->ses_keysize / 32); i++)
+ SWAP32(ses->ses_key[i]);
+ }
+
+ if (macini) {
+ ses->ses_mlen = macini->cri_mlen;
+
+ if (ses->ses_mlen == 0 ||
+ ses->ses_mlen > SHA1_HASH_LEN) {
+
+ if (macini->cri_alg == CRYPTO_MD5_HMAC ||
+ macini->cri_alg == CRYPTO_SHA1_HMAC)
+ {
+ ses->ses_mlen = DEFAULT_HMAC_LEN;
+ } else
+ {
+ /*
+ * Reserved for future usage. MD5/SHA1 calculations have
+ * different hash sizes.
+ */
+ printk(KERN_ERR DRV_MODULE_NAME ": unsupported hash operation with mac/hash len: %d\n", ses->ses_mlen);
+ return (EINVAL);
+ }
+
+ }
+
+ if (macini->cri_key != NULL) {
+ ubsec_setup_mackey(ses, macini->cri_alg, macini->cri_key,
+ macini->cri_klen / 8);
+ }
+ }
+
+ *sidp = UBSEC_SID(device_get_unit(sc->sc_dev), sesn);
+ return (0);
+}
+
+/*
+ * Deallocate a session.
+ */
+static int
+ubsec_freesession(device_t dev, u_int64_t tid)
+{
+ struct ubsec_softc *sc = device_get_softc(dev);
+ int session;
+ u_int32_t sid = ((u_int32_t)tid) & 0xffffffff;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ if (sc == NULL)
+ return (EINVAL);
+
+ session = UBSEC_SESSION(sid);
+ if (session < sc->sc_nsessions) {
+ bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session]));
+ return (0);
+ } else
+ return (EINVAL);
+}
+
+static int
+ubsec_process(device_t dev, struct cryptop *crp, int hint)
+{
+ struct ubsec_q *q = NULL;
+ int err = 0, i, j, nicealign;
+ struct ubsec_softc *sc = device_get_softc(dev);
+ struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
+ int encoffset = 0, macoffset = 0, cpskip, cpoffset;
+ int sskip, dskip, stheend, dtheend, ivsize = 8;
+ int16_t coffset;
+ struct ubsec_session *ses;
+ struct ubsec_generic_ctx ctx;
+ struct ubsec_dma *dmap = NULL;
+ unsigned long flags;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ if (unlikely(crp == NULL || crp->crp_callback == NULL)) {
+ ubsecstats.hst_invalid++;
+ return (EINVAL);
+ }
+
+ if (unlikely(sc == NULL))
+ return (EINVAL);
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("spin_lock_irqsave\n");
+#endif
+ spin_lock_irqsave(&sc->sc_ringmtx, flags);
+ //spin_lock_irq(&sc->sc_ringmtx);
+
+ if (BSD_SIMPLEQ_EMPTY(&sc->sc_freequeue)) {
+ ubsecstats.hst_queuefull++;
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("spin_unlock_irqrestore\n");
+#endif
+ spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
+ //spin_unlock_irq(&sc->sc_ringmtx);
+ err = ENOMEM;
+ goto errout2;
+ }
+
+ q = BSD_SIMPLEQ_FIRST(&sc->sc_freequeue);
+ BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q_next);
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("spin_unlock_irqrestore\n");
+#endif
+ spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
+ //spin_unlock_irq(&sc->sc_ringmtx);
+
+ dmap = q->q_dma; /* Save dma pointer */
+ bzero(q, sizeof(struct ubsec_q));
+ bzero(&ctx, sizeof(ctx));
+
+ q->q_sesn = UBSEC_SESSION(crp->crp_sid);
+ q->q_dma = dmap;
+ ses = &sc->sc_sessions[q->q_sesn];
+
+ if (crp->crp_flags & CRYPTO_F_SKBUF) {
+ q->q_src_m = (struct sk_buff *)crp->crp_buf;
+ q->q_dst_m = (struct sk_buff *)crp->crp_buf;
+ } else if (crp->crp_flags & CRYPTO_F_IOV) {
+ q->q_src_io = (struct uio *)crp->crp_buf;
+ q->q_dst_io = (struct uio *)crp->crp_buf;
+ } else {
+ err = EINVAL;
+ goto errout; /* XXX we don't handle contiguous blocks! */
+ }
+
+ bzero(&dmap->d_dma->d_mcr, sizeof(struct ubsec_mcr));
+
+ dmap->d_dma->d_mcr.mcr_pkts = htole16(1);
+ dmap->d_dma->d_mcr.mcr_flags = 0;
+ q->q_crp = crp;
+
+ crd1 = crp->crp_desc;
+ if (crd1 == NULL) {
+ err = EINVAL;
+ goto errout;
+ }
+ crd2 = crd1->crd_next;
+
+ if (crd2 == NULL) {
+ if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
+ crd1->crd_alg == CRYPTO_SHA1_HMAC) {
+ maccrd = crd1;
+ enccrd = NULL;
+ } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
+ crd1->crd_alg == CRYPTO_3DES_CBC ||
+ crd1->crd_alg == CRYPTO_AES_CBC) {
+ maccrd = NULL;
+ enccrd = crd1;
+ } else {
+ err = EINVAL;
+ goto errout;
+ }
+ } else {
+ if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
+ crd1->crd_alg == CRYPTO_SHA1_HMAC) &&
+ (crd2->crd_alg == CRYPTO_DES_CBC ||
+ crd2->crd_alg == CRYPTO_3DES_CBC ||
+ crd2->crd_alg == CRYPTO_AES_CBC) &&
+ ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
+ maccrd = crd1;
+ enccrd = crd2;
+ } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
+ crd1->crd_alg == CRYPTO_3DES_CBC ||
+ crd1->crd_alg == CRYPTO_AES_CBC) &&
+ (crd2->crd_alg == CRYPTO_MD5_HMAC ||
+ crd2->crd_alg == CRYPTO_SHA1_HMAC) &&
+ (crd1->crd_flags & CRD_F_ENCRYPT)) {
+ enccrd = crd1;
+ maccrd = crd2;
+ } else {
+ /*
+ * We cannot order the ubsec as requested
+ */
+ printk(KERN_ERR DRV_MODULE_NAME ": got wrong algorithm/signature order.\n");
+ err = EINVAL;
+ goto errout;
+ }
+ }
+
+ /* Encryption/Decryption requested */
+ if (enccrd) {
+ encoffset = enccrd->crd_skip;
+
+ if (enccrd->crd_alg == CRYPTO_DES_CBC ||
+ enccrd->crd_alg == CRYPTO_3DES_CBC)
+ {
+ ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_3DES);
+ ctx.pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC_DES);
+ ivsize = 8; /* [3]DES uses 64bit IVs */
+ } else {
+ ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_AES);
+ ctx.pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC_AES);
+ ivsize = 16; /* AES uses 128bit IVs / [3]DES 64bit IVs */
+
+ switch(ses->ses_keysize)
+ {
+ case 128:
+ ctx.pc_flags |= htole16(UBS_PKTCTX_AES128);
+ break;
+ case 192:
+ ctx.pc_flags |= htole16(UBS_PKTCTX_AES192);
+ break;
+ case 256:
+ ctx.pc_flags |= htole16(UBS_PKTCTX_AES256);
+ break;
+ default:
+ DPRINTF("invalid AES key size: %d\n", ses->ses_keysize);
+ err = EINVAL;
+ goto errout;
+ }
+ }
+
+ if (enccrd->crd_flags & CRD_F_ENCRYPT) {
+ /* Direction: Outbound */
+
+ q->q_flags |= UBSEC_QFLAGS_COPYOUTIV;
+
+ if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) {
+ bcopy(enccrd->crd_iv, ctx.pc_iv, ivsize);
+ } else {
+ for(i=0; i < (ivsize / 4); i++)
+ ctx.pc_iv[i] = ses->ses_iv[i];
+ }
+
+ /* If there is no IV in the buffer -> copy it here */
+ if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) {
+ if (crp->crp_flags & CRYPTO_F_SKBUF)
+ /*
+ m_copyback(q->q_src_m,
+ enccrd->crd_inject,
+ 8, ctx.pc_iv);
+ */
+ crypto_copyback(crp->crp_flags, (caddr_t)q->q_src_m,
+ enccrd->crd_inject, ivsize, (caddr_t)ctx.pc_iv);
+ else if (crp->crp_flags & CRYPTO_F_IOV)
+ /*
+ cuio_copyback(q->q_src_io,
+ enccrd->crd_inject,
+ 8, ctx.pc_iv);
+ */
+ crypto_copyback(crp->crp_flags, (caddr_t)q->q_src_io,
+ enccrd->crd_inject, ivsize, (caddr_t)ctx.pc_iv);
+ }
+ } else {
+ /* Direction: Inbound */
+
+ ctx.pc_flags |= htole16(UBS_PKTCTX_INBOUND);
+
+ if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
+ bcopy(enccrd->crd_iv, ctx.pc_iv, ivsize);
+ else if (crp->crp_flags & CRYPTO_F_SKBUF)
+ /*
+ m_copydata(q->q_src_m, enccrd->crd_inject,
+ 8, (caddr_t)ctx.pc_iv);
+ */
+ crypto_copydata(crp->crp_flags, (caddr_t)q->q_src_m,
+ enccrd->crd_inject, ivsize,
+ (caddr_t)ctx.pc_iv);
+ else if (crp->crp_flags & CRYPTO_F_IOV)
+ /*
+ cuio_copydata(q->q_src_io,
+ enccrd->crd_inject, 8,
+ (caddr_t)ctx.pc_iv);
+ */
+ crypto_copydata(crp->crp_flags, (caddr_t)q->q_src_io,
+ enccrd->crd_inject, ivsize,
+ (caddr_t)ctx.pc_iv);
+
+ }
+
+ /* Even though key & IV sizes differ from cipher to cipher
+ * copy / swap the full array lengths. Let the compiler unroll
+ * the loop to increase the cpu pipeline performance... */
+ for(i=0; i < 8; i++)
+ ctx.pc_key[i] = ses->ses_key[i];
+ for(i=0; i < 4; i++)
+ SWAP32(ctx.pc_iv[i]);
+ }
+
+ /* Authentication requested */
+ if (maccrd) {
+ macoffset = maccrd->crd_skip;
+
+ if (maccrd->crd_alg == CRYPTO_MD5_HMAC)
+ ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_MD5);
+ else
+ ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_SHA1);
+
+ for (i = 0; i < 5; i++) {
+ ctx.pc_hminner[i] = ses->ses_hminner[i];
+ ctx.pc_hmouter[i] = ses->ses_hmouter[i];
+
+ HTOLE32(ctx.pc_hminner[i]);
+ HTOLE32(ctx.pc_hmouter[i]);
+ }
+ }
+
+ if (enccrd && maccrd) {
+ /*
+ * ubsec cannot handle packets where the end of encryption
+ * and authentication are not the same, or where the
+ * encrypted part begins before the authenticated part.
+ */
+ if (((encoffset + enccrd->crd_len) !=
+ (macoffset + maccrd->crd_len)) ||
+ (enccrd->crd_skip < maccrd->crd_skip)) {
+ err = EINVAL;
+ goto errout;
+ }
+ sskip = maccrd->crd_skip;
+ cpskip = dskip = enccrd->crd_skip;
+ stheend = maccrd->crd_len;
+ dtheend = enccrd->crd_len;
+ coffset = enccrd->crd_skip - maccrd->crd_skip;
+ cpoffset = cpskip + dtheend;
+#ifdef UBSEC_DEBUG
+ DPRINTF("mac: skip %d, len %d, inject %d\n",
+ maccrd->crd_skip, maccrd->crd_len, maccrd->crd_inject);
+ DPRINTF("enc: skip %d, len %d, inject %d\n",
+ enccrd->crd_skip, enccrd->crd_len, enccrd->crd_inject);
+ DPRINTF("src: skip %d, len %d\n", sskip, stheend);
+ DPRINTF("dst: skip %d, len %d\n", dskip, dtheend);
+ DPRINTF("ubs: coffset %d, pktlen %d, cpskip %d, cpoffset %d\n",
+ coffset, stheend, cpskip, cpoffset);
+#endif
+ } else {
+ cpskip = dskip = sskip = macoffset + encoffset;
+ dtheend = stheend = (enccrd)?enccrd->crd_len:maccrd->crd_len;
+ cpoffset = cpskip + dtheend;
+ coffset = 0;
+ }
+ ctx.pc_offset = htole16(coffset >> 2);
+
+#if 0
+ if (bus_dmamap_create(sc->sc_dmat, 0xfff0, UBS_MAX_SCATTER,
+ 0xfff0, 0, BUS_DMA_NOWAIT, &q->q_src_map) != 0) {
+ err = ENOMEM;
+ goto errout;
+ }
+#endif
+
+ if (crp->crp_flags & CRYPTO_F_SKBUF) {
+#if 0
+ if (bus_dmamap_load_mbuf(sc->sc_dmat, q->q_src_map,
+ q->q_src_m, BUS_DMA_NOWAIT) != 0) {
+ bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
+ q->q_src_map = NULL;
+ err = ENOMEM;
+ goto errout;
+ }
+#endif
+ err = dma_map_skb(sc, q->q_src_map, q->q_src_m, &q->q_src_len);
+ if (unlikely(err != 0))
+ goto errout;
+
+ } else if (crp->crp_flags & CRYPTO_F_IOV) {
+#if 0
+ if (bus_dmamap_load_uio(sc->sc_dmat, q->q_src_map,
+ q->q_src_io, BUS_DMA_NOWAIT) != 0) {
+ bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
+ q->q_src_map = NULL;
+ err = ENOMEM;
+ goto errout;
+ }
+#endif
+ err = dma_map_uio(sc, q->q_src_map, q->q_src_io, &q->q_src_len);
+ if (unlikely(err != 0))
+ goto errout;
+ }
+
+ /*
+ * Check alignment
+ */
+ nicealign = ubsec_dmamap_aligned(sc, q->q_src_map, q->q_src_len);
+
+ dmap->d_dma->d_mcr.mcr_pktlen = htole16(stheend);
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("src skip: %d\n", sskip);
+#endif
+ for (i = j = 0; i < q->q_src_len; i++) {
+ struct ubsec_pktbuf *pb;
+ size_t packl = q->q_src_map[i].dma_size;
+ dma_addr_t packp = q->q_src_map[i].dma_paddr;
+
+ if (sskip >= packl) {
+ sskip -= packl;
+ continue;
+ }
+
+ packl -= sskip;
+ packp += sskip;
+ sskip = 0;
+
+ /* maximum fragment size is 0xfffc */
+ if (packl > 0xfffc) {
+ DPRINTF("Error: fragment size is bigger than 0xfffc.\n");
+ err = EIO;
+ goto errout;
+ }
+
+ if (j == 0)
+ pb = &dmap->d_dma->d_mcr.mcr_ipktbuf;
+ else
+ pb = &dmap->d_dma->d_sbuf[j - 1];
+
+ pb->pb_addr = htole32(packp);
+
+ if (stheend) {
+ if (packl > stheend) {
+ pb->pb_len = htole32(stheend);
+ stheend = 0;
+ } else {
+ pb->pb_len = htole32(packl);
+ stheend -= packl;
+ }
+ } else
+ pb->pb_len = htole32(packl);
+
+ if ((i + 1) == q->q_src_len)
+ pb->pb_next = 0;
+ else
+ pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_sbuf[j]));
+ j++;
+ }
+
+ if (enccrd == NULL && maccrd != NULL) {
+ /* Authentication only */
+ dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr = 0;
+ dmap->d_dma->d_mcr.mcr_opktbuf.pb_len = 0;
+ dmap->d_dma->d_mcr.mcr_opktbuf.pb_next =
+ htole32(dmap->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_macbuf[0]));
+#ifdef UBSEC_DEBUG
+ DPRINTF("opkt: %x %x %x\n",
+ dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr,
+ dmap->d_dma->d_mcr.mcr_opktbuf.pb_len,
+ dmap->d_dma->d_mcr.mcr_opktbuf.pb_next);
+#endif
+ } else {
+ if (crp->crp_flags & CRYPTO_F_IOV) {
+ if (!nicealign) {
+ err = EINVAL;
+ goto errout;
+ }
+#if 0
+ if (bus_dmamap_create(sc->sc_dmat, 0xfff0,
+ UBS_MAX_SCATTER, 0xfff0, 0, BUS_DMA_NOWAIT,
+ &q->q_dst_map) != 0) {
+ err = ENOMEM;
+ goto errout;
+ }
+ if (bus_dmamap_load_uio(sc->sc_dmat, q->q_dst_map,
+ q->q_dst_io, BUS_DMA_NOWAIT) != 0) {
+ bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
+ q->q_dst_map = NULL;
+ goto errout;
+ }
+#endif
+
+ /* HW shall copy the result into the source memory */
+ for(i = 0; i < q->q_src_len; i++)
+ q->q_dst_map[i] = q->q_src_map[i];
+
+ q->q_dst_len = q->q_src_len;
+ q->q_has_dst = 0;
+
+ } else if (crp->crp_flags & CRYPTO_F_SKBUF) {
+ if (nicealign) {
+
+ /* HW shall copy the result into the source memory */
+ q->q_dst_m = q->q_src_m;
+ for(i = 0; i < q->q_src_len; i++)
+ q->q_dst_map[i] = q->q_src_map[i];
+
+ q->q_dst_len = q->q_src_len;
+ q->q_has_dst = 0;
+
+ } else {
+#ifdef NOTYET
+ int totlen, len;
+ struct sk_buff *m, *top, **mp;
+
+ totlen = q->q_src_map->dm_mapsize;
+ if (q->q_src_m->m_flags & M_PKTHDR) {
+ len = MHLEN;
+ MGETHDR(m, M_DONTWAIT, MT_DATA);
+ } else {
+ len = MLEN;
+ MGET(m, M_DONTWAIT, MT_DATA);
+ }
+ if (m == NULL) {
+ err = ENOMEM;
+ goto errout;
+ }
+ if (len == MHLEN)
+ M_DUP_PKTHDR(m, q->q_src_m);
+ if (totlen >= MINCLSIZE) {
+ MCLGET(m, M_DONTWAIT);
+ if (m->m_flags & M_EXT)
+ len = MCLBYTES;
+ }
+ m->m_len = len;
+ top = NULL;
+ mp = ⊤
+
+ while (totlen > 0) {
+ if (top) {
+ MGET(m, M_DONTWAIT, MT_DATA);
+ if (m == NULL) {
+ m_freem(top);
+ err = ENOMEM;
+ goto errout;
+ }
+ len = MLEN;
+ }
+ if (top && totlen >= MINCLSIZE) {
+ MCLGET(m, M_DONTWAIT);
+ if (m->m_flags & M_EXT)
+ len = MCLBYTES;
+ }
+ m->m_len = len = min(totlen, len);
+ totlen -= len;
+ *mp = m;
+ mp = &m->m_next;
+ }
+ q->q_dst_m = top;
+ ubsec_mcopy(q->q_src_m, q->q_dst_m,
+ cpskip, cpoffset);
+ if (bus_dmamap_create(sc->sc_dmat, 0xfff0,
+ UBS_MAX_SCATTER, 0xfff0, 0, BUS_DMA_NOWAIT,
+ &q->q_dst_map) != 0) {
+ err = ENOMEM;
+ goto errout;
+ }
+ if (bus_dmamap_load_mbuf(sc->sc_dmat,
+ q->q_dst_map, q->q_dst_m,
+ BUS_DMA_NOWAIT) != 0) {
+ bus_dmamap_destroy(sc->sc_dmat,
+ q->q_dst_map);
+ q->q_dst_map = NULL;
+ err = ENOMEM;
+ goto errout;
+ }
+#else
+ device_printf(sc->sc_dev,
+ "%s,%d: CRYPTO_F_SKBUF unaligned not implemented\n",
+ __FILE__, __LINE__);
+ err = EINVAL;
+ goto errout;
+#endif
+ }
+ } else {
+ err = EINVAL;
+ goto errout;
+ }
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("dst skip: %d\n", dskip);
+#endif
+ for (i = j = 0; i < q->q_dst_len; i++) {
+ struct ubsec_pktbuf *pb;
+ size_t packl = q->q_dst_map[i].dma_size;
+ dma_addr_t packp = q->q_dst_map[i].dma_paddr;
+
+ if (dskip >= packl) {
+ dskip -= packl;
+ continue;
+ }
+
+ packl -= dskip;
+ packp += dskip;
+ dskip = 0;
+
+ if (packl > 0xfffc) {
+ DPRINTF("Error: fragment size is bigger than 0xfffc.\n");
+ err = EIO;
+ goto errout;
+ }
+
+ if (j == 0)
+ pb = &dmap->d_dma->d_mcr.mcr_opktbuf;
+ else
+ pb = &dmap->d_dma->d_dbuf[j - 1];
+
+ pb->pb_addr = htole32(packp);
+
+ if (dtheend) {
+ if (packl > dtheend) {
+ pb->pb_len = htole32(dtheend);
+ dtheend = 0;
+ } else {
+ pb->pb_len = htole32(packl);
+ dtheend -= packl;
+ }
+ } else
+ pb->pb_len = htole32(packl);
+
+ if ((i + 1) == q->q_dst_len) {
+ if (maccrd)
+ /* Authentication:
+ * The last fragment of the output buffer
+ * contains the HMAC. */
+ pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_macbuf[0]));
+ else
+ pb->pb_next = 0;
+ } else
+ pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_dbuf[j]));
+ j++;
+ }
+ }
+
+ dmap->d_dma->d_mcr.mcr_cmdctxp = htole32(dmap->d_alloc.dma_paddr +
+ offsetof(struct ubsec_dmachunk, d_ctx));
+
+ if (sc->sc_flags & UBS_FLAGS_LONGCTX) {
+ /* new Broadcom cards with dynamic long command context structure */
+
+ if (enccrd != NULL &&
+ enccrd->crd_alg == CRYPTO_AES_CBC)
+ {
+ struct ubsec_pktctx_aes128 *ctxaes128;
+ struct ubsec_pktctx_aes192 *ctxaes192;
+ struct ubsec_pktctx_aes256 *ctxaes256;
+
+ switch(ses->ses_keysize)
+ {
+ /* AES 128bit */
+ case 128:
+ ctxaes128 = (struct ubsec_pktctx_aes128 *)
+ (dmap->d_alloc.dma_vaddr +
+ offsetof(struct ubsec_dmachunk, d_ctx));
+
+ ctxaes128->pc_len = htole16(sizeof(struct ubsec_pktctx_aes128));
+ ctxaes128->pc_type = ctx.pc_type;
+ ctxaes128->pc_flags = ctx.pc_flags;
+ ctxaes128->pc_offset = ctx.pc_offset;
+ for (i = 0; i < 4; i++)
+ ctxaes128->pc_aeskey[i] = ctx.pc_key[i];
+ for (i = 0; i < 5; i++)
+ ctxaes128->pc_hminner[i] = ctx.pc_hminner[i];
+ for (i = 0; i < 5; i++)
+ ctxaes128->pc_hmouter[i] = ctx.pc_hmouter[i];
+ for (i = 0; i < 4; i++)
+ ctxaes128->pc_iv[i] = ctx.pc_iv[i];
+ break;
+
+ /* AES 192bit */
+ case 192:
+ ctxaes192 = (struct ubsec_pktctx_aes192 *)
+ (dmap->d_alloc.dma_vaddr +
+ offsetof(struct ubsec_dmachunk, d_ctx));
+
+ ctxaes192->pc_len = htole16(sizeof(struct ubsec_pktctx_aes192));
+ ctxaes192->pc_type = ctx.pc_type;
+ ctxaes192->pc_flags = ctx.pc_flags;
+ ctxaes192->pc_offset = ctx.pc_offset;
+ for (i = 0; i < 6; i++)
+ ctxaes192->pc_aeskey[i] = ctx.pc_key[i];
+ for (i = 0; i < 5; i++)
+ ctxaes192->pc_hminner[i] = ctx.pc_hminner[i];
+ for (i = 0; i < 5; i++)
+ ctxaes192->pc_hmouter[i] = ctx.pc_hmouter[i];
+ for (i = 0; i < 4; i++)
+ ctxaes192->pc_iv[i] = ctx.pc_iv[i];
+ break;
+
+ /* AES 256bit */
+ case 256:
+ ctxaes256 = (struct ubsec_pktctx_aes256 *)
+ (dmap->d_alloc.dma_vaddr +
+ offsetof(struct ubsec_dmachunk, d_ctx));
+
+ ctxaes256->pc_len = htole16(sizeof(struct ubsec_pktctx_aes256));
+ ctxaes256->pc_type = ctx.pc_type;
+ ctxaes256->pc_flags = ctx.pc_flags;
+ ctxaes256->pc_offset = ctx.pc_offset;
+ for (i = 0; i < 8; i++)
+ ctxaes256->pc_aeskey[i] = ctx.pc_key[i];
+ for (i = 0; i < 5; i++)
+ ctxaes256->pc_hminner[i] = ctx.pc_hminner[i];
+ for (i = 0; i < 5; i++)
+ ctxaes256->pc_hmouter[i] = ctx.pc_hmouter[i];
+ for (i = 0; i < 4; i++)
+ ctxaes256->pc_iv[i] = ctx.pc_iv[i];
+ break;
+
+ }
+ } else {
+ /*
+ * [3]DES / MD5_HMAC / SHA1_HMAC
+ *
+ * MD5_HMAC / SHA1_HMAC can use the IPSEC 3DES operation without
+ * encryption.
+ */
+ struct ubsec_pktctx_des *ctxdes;
+
+ ctxdes = (struct ubsec_pktctx_des *)(dmap->d_alloc.dma_vaddr +
+ offsetof(struct ubsec_dmachunk, d_ctx));
+
+ ctxdes->pc_len = htole16(sizeof(struct ubsec_pktctx_des));
+ ctxdes->pc_type = ctx.pc_type;
+ ctxdes->pc_flags = ctx.pc_flags;
+ ctxdes->pc_offset = ctx.pc_offset;
+ for (i = 0; i < 6; i++)
+ ctxdes->pc_deskey[i] = ctx.pc_key[i];
+ for (i = 0; i < 5; i++)
+ ctxdes->pc_hminner[i] = ctx.pc_hminner[i];
+ for (i = 0; i < 5; i++)
+ ctxdes->pc_hmouter[i] = ctx.pc_hmouter[i];
+ ctxdes->pc_iv[0] = ctx.pc_iv[0];
+ ctxdes->pc_iv[1] = ctx.pc_iv[1];
+ }
+ } else
+ {
+ /* old Broadcom card with fixed small command context structure */
+
+ /*
+ * [3]DES / MD5_HMAC / SHA1_HMAC
+ */
+ struct ubsec_pktctx *ctxs;
+
+ ctxs = (struct ubsec_pktctx *)(dmap->d_alloc.dma_vaddr +
+ offsetof(struct ubsec_dmachunk, d_ctx));
+
+ /* transform generic context into small context */
+ for (i = 0; i < 6; i++)
+ ctxs->pc_deskey[i] = ctx.pc_key[i];
+ for (i = 0; i < 5; i++)
+ ctxs->pc_hminner[i] = ctx.pc_hminner[i];
+ for (i = 0; i < 5; i++)
+ ctxs->pc_hmouter[i] = ctx.pc_hmouter[i];
+ ctxs->pc_iv[0] = ctx.pc_iv[0];
+ ctxs->pc_iv[1] = ctx.pc_iv[1];
+ ctxs->pc_flags = ctx.pc_flags;
+ ctxs->pc_offset = ctx.pc_offset;
+ }
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("spin_lock_irqsave\n");
+#endif
+ spin_lock_irqsave(&sc->sc_ringmtx, flags);
+ //spin_lock_irq(&sc->sc_ringmtx);
+
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next);
+ sc->sc_nqueue++;
+ ubsecstats.hst_ipackets++;
+ ubsecstats.hst_ibytes += stheend;
+ ubsec_feed(sc);
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("spin_unlock_irqrestore\n");
+#endif
+ spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
+ //spin_unlock_irq(&sc->sc_ringmtx);
+
+ return (0);
+
+errout:
+ if (q != NULL) {
+#ifdef NOTYET
+ if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
+ m_freem(q->q_dst_m);
+#endif
+
+ if ((q->q_has_dst == 1) && q->q_dst_len > 0) {
+#if 0
+ bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
+ bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
+#endif
+ dma_unmap(sc, q->q_dst_map, q->q_dst_len);
+ }
+ if (q->q_src_len > 0) {
+#if 0
+ bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
+ bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
+#endif
+ dma_unmap(sc, q->q_src_map, q->q_src_len);
+ }
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("spin_lock_irqsave\n");
+#endif
+ spin_lock_irqsave(&sc->sc_ringmtx, flags);
+ //spin_lock_irq(&sc->sc_ringmtx);
+
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
+
+#ifdef UBSEC_VERBOSE_DEBUG
+ DPRINTF("spin_unlock_irqrestore\n");
+#endif
+ spin_unlock_irqrestore(&sc->sc_ringmtx, flags);
+ //spin_unlock_irq(&sc->sc_ringmtx);
+
+ }
+ if (err == EINVAL)
+ ubsecstats.hst_invalid++;
+ else
+ ubsecstats.hst_nomem++;
+errout2:
+ crp->crp_etype = err;
+ crypto_done(crp);
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s() err = %x\n", __FUNCTION__, err);
+#endif
+
+ return (0);
+}
+
+void
+ubsec_callback(struct ubsec_softc *sc, struct ubsec_q *q)
+{
+ struct cryptop *crp = (struct cryptop *)q->q_crp;
+ struct cryptodesc *crd;
+ struct ubsec_dma *dmap = q->q_dma;
+ int ivsize = 8;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ ubsecstats.hst_opackets++;
+ ubsecstats.hst_obytes += dmap->d_alloc.dma_size;
+
+#if 0
+ bus_dmamap_sync(sc->sc_dmat, dmap->d_alloc.dma_map, 0,
+ dmap->d_alloc.dma_map->dm_mapsize,
+ BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
+ if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) {
+ bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
+ 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_POSTREAD);
+ bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
+ bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
+ }
+ bus_dmamap_sync(sc->sc_dmat, q->q_src_map,
+ 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_POSTWRITE);
+ bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
+ bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
+#endif
+
+ if ((q->q_has_dst == 1) && q->q_dst_len > 0)
+ dma_unmap(sc, q->q_dst_map, q->q_dst_len);
+
+ dma_unmap(sc, q->q_src_map, q->q_src_len);
+
+#ifdef NOTYET
+ if ((crp->crp_flags & CRYPTO_F_SKBUF) && (q->q_src_m != q->q_dst_m)) {
+ m_freem(q->q_src_m);
+ crp->crp_buf = (caddr_t)q->q_dst_m;
+ }
+#endif
+
+ /* copy out IV for future use */
+ if (q->q_flags & UBSEC_QFLAGS_COPYOUTIV) {
+ for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
+ if (crd->crd_alg != CRYPTO_DES_CBC &&
+ crd->crd_alg != CRYPTO_3DES_CBC &&
+ crd->crd_alg != CRYPTO_AES_CBC)
+ continue;
+
+ if (crd->crd_alg == CRYPTO_AES_CBC)
+ ivsize = 16;
+ else
+ ivsize = 8;
+
+ if (crp->crp_flags & CRYPTO_F_SKBUF)
+#if 0
+ m_copydata((struct sk_buff *)crp->crp_buf,
+ crd->crd_skip + crd->crd_len - 8, 8,
+ (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
+#endif
+ crypto_copydata(crp->crp_flags, (caddr_t)crp->crp_buf,
+ crd->crd_skip + crd->crd_len - ivsize, ivsize,
+ (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
+
+ else if (crp->crp_flags & CRYPTO_F_IOV) {
+#if 0
+ cuio_copydata((struct uio *)crp->crp_buf,
+ crd->crd_skip + crd->crd_len - 8, 8,
+ (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
+#endif
+ crypto_copydata(crp->crp_flags, (caddr_t)crp->crp_buf,
+ crd->crd_skip + crd->crd_len - ivsize, ivsize,
+ (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
+
+ }
+ break;
+ }
+ }
+
+ for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
+ if (crd->crd_alg != CRYPTO_MD5_HMAC &&
+ crd->crd_alg != CRYPTO_SHA1_HMAC)
+ continue;
+#if 0
+ if (crp->crp_flags & CRYPTO_F_SKBUF)
+ m_copyback((struct sk_buff *)crp->crp_buf,
+ crd->crd_inject, 12,
+ dmap->d_dma->d_macbuf);
+#endif
+#if 0
+ /* BUG? it does not honor the mac len.. */
+ crypto_copyback(crp->crp_flags, crp->crp_buf,
+ crd->crd_inject, 12,
+ (caddr_t)dmap->d_dma->d_macbuf);
+#endif
+ crypto_copyback(crp->crp_flags, crp->crp_buf,
+ crd->crd_inject,
+ sc->sc_sessions[q->q_sesn].ses_mlen,
+ (caddr_t)dmap->d_dma->d_macbuf);
+#if 0
+ else if (crp->crp_flags & CRYPTO_F_IOV && crp->crp_mac)
+ bcopy((caddr_t)dmap->d_dma->d_macbuf,
+ crp->crp_mac, 12);
+#endif
+ break;
+ }
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
+ crypto_done(crp);
+}
+
+void
+ubsec_mcopy(struct sk_buff *srcm, struct sk_buff *dstm, int hoffset, int toffset)
+{
+ int i, j, dlen, slen;
+ caddr_t dptr, sptr;
+
+ j = 0;
+ sptr = srcm->data;
+ slen = srcm->len;
+ dptr = dstm->data;
+ dlen = dstm->len;
+
+ while (1) {
+ for (i = 0; i < min(slen, dlen); i++) {
+ if (j < hoffset || j >= toffset)
+ *dptr++ = *sptr++;
+ slen--;
+ dlen--;
+ j++;
+ }
+ if (slen == 0) {
+ srcm = srcm->next;
+ if (srcm == NULL)
+ return;
+ sptr = srcm->data;
+ slen = srcm->len;
+ }
+ if (dlen == 0) {
+ dstm = dstm->next;
+ if (dstm == NULL)
+ return;
+ dptr = dstm->data;
+ dlen = dstm->len;
+ }
+ }
+}
+
+int
+ubsec_dma_malloc(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma,
+ size_t size, int mapflags)
+{
+ dma->dma_vaddr = dma_alloc_coherent(sc->sc_dv,
+ size, &dma->dma_paddr, GFP_KERNEL);
+
+ if (likely(dma->dma_vaddr))
+ {
+ dma->dma_size = size;
+ return (0);
+ }
+
+ DPRINTF("could not allocate %d bytes of coherent memory.\n", size);
+
+ return (1);
+}
+
+void
+ubsec_dma_free(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma)
+{
+ dma_free_coherent(sc->sc_dv, dma->dma_size, dma->dma_vaddr,
+ dma->dma_paddr);
+}
+
+/*
+ * Resets the board. Values in the regesters are left as is
+ * from the reset (i.e. initial values are assigned elsewhere).
+ */
+void
+ubsec_reset_board(struct ubsec_softc *sc)
+{
+ volatile u_int32_t ctrl;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+ DPRINTF("Send reset signal to chip.\n");
+
+ ctrl = READ_REG(sc, BS_CTRL);
+ ctrl |= BS_CTRL_RESET;
+ WRITE_REG(sc, BS_CTRL, ctrl);
+
+ /*
+ * Wait aprox. 30 PCI clocks = 900 ns = 0.9 us
+ */
+ DELAY(10);
+}
+
+/*
+ * Init Broadcom registers
+ */
+void
+ubsec_init_board(struct ubsec_softc *sc)
+{
+ u_int32_t ctrl;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+ DPRINTF("Initialize chip.\n");
+
+ ctrl = READ_REG(sc, BS_CTRL);
+ ctrl &= ~(BS_CTRL_BE32 | BS_CTRL_BE64);
+ ctrl |= BS_CTRL_LITTLE_ENDIAN | BS_CTRL_MCR1INT | BS_CTRL_DMAERR;
+
+ WRITE_REG(sc, BS_CTRL, ctrl);
+
+ /* Set chip capabilities (BCM5365P) */
+ sc->sc_flags |= UBS_FLAGS_LONGCTX | UBS_FLAGS_AES;
+}
+
+/*
+ * Clean up after a chip crash.
+ * It is assumed that the caller has spin_lock_irq(sc_ringmtx).
+ */
+void
+ubsec_cleanchip(struct ubsec_softc *sc)
+{
+ struct ubsec_q *q;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+ DPRINTF("Clean up queues after chip crash.\n");
+
+ while (!BSD_SIMPLEQ_EMPTY(&sc->sc_qchip)) {
+ q = BSD_SIMPLEQ_FIRST(&sc->sc_qchip);
+ BSD_SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
+ ubsec_free_q(sc, q);
+ }
+}
+
+/*
+ * free a ubsec_q
+ * It is assumed that the caller has spin_lock_irq(sc_ringmtx).
+ */
+int
+ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q)
+{
+ struct ubsec_q *q2;
+ struct cryptop *crp;
+ int npkts;
+ int i;
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+
+ npkts = q->q_nstacked_mcrs;
+
+ for (i = 0; i < npkts; i++) {
+ if(q->q_stacked_mcr[i]) {
+ q2 = q->q_stacked_mcr[i];
+
+ if ((q2->q_dst_m != NULL) && (q2->q_src_m != q2->q_dst_m))
+#ifdef NOTYET
+ m_freem(q2->q_dst_m);
+#else
+ printk(KERN_ERR "%s,%d: SKB not supported\n", __FILE__, __LINE__);
+#endif
+
+ crp = (struct cryptop *)q2->q_crp;
+
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q2, q_next);
+
+ crp->crp_etype = EFAULT;
+ crypto_done(crp);
+ } else {
+ break;
+ }
+ }
+
+ /*
+ * Free header MCR
+ */
+ if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
+#ifdef NOTYET
+ m_freem(q->q_dst_m);
+#else
+ printk(KERN_ERR "%s,%d: SKB not supported\n", __FILE__, __LINE__);
+#endif
+
+ crp = (struct cryptop *)q->q_crp;
+
+ BSD_SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
+
+ crp->crp_etype = EFAULT;
+ crypto_done(crp);
+ return(0);
+}
+
+/*
+ * Routine to reset the chip and clean up.
+ * It is assumed that the caller has spin_lock_irq(sc_ringmtx).
+ */
+void
+ubsec_totalreset(struct ubsec_softc *sc)
+{
+
+#ifdef UBSEC_DEBUG
+ DPRINTF("%s()\n", __FUNCTION__);
+#endif
+ DPRINTF("initiate total chip reset.. \n");
+ ubsec_reset_board(sc);
+ ubsec_init_board(sc);
+ ubsec_cleanchip(sc);
+}
+
+void
+ubsec_dump_pb(struct ubsec_pktbuf *pb)
+{
+ printf("addr 0x%x (0x%x) next 0x%x\n",
+ pb->pb_addr, pb->pb_len, pb->pb_next);
+}
+
+void
+ubsec_dump_mcr(struct ubsec_mcr *mcr)
+{
+ struct ubsec_mcr_add *ma;
+ int i;
+
+ printf("MCR:\n");
+ printf(" pkts: %u, flags 0x%x\n",
+ letoh16(mcr->mcr_pkts), letoh16(mcr->mcr_flags));
+ ma = (struct ubsec_mcr_add *)&mcr->mcr_cmdctxp;
+ for (i = 0; i < letoh16(mcr->mcr_pkts); i++) {
+ printf(" %d: ctx 0x%x len 0x%x rsvd 0x%x\n", i,
+ letoh32(ma->mcr_cmdctxp), letoh16(ma->mcr_pktlen),
+ letoh16(ma->mcr_reserved));
+ printf(" %d: ipkt ", i);
+ ubsec_dump_pb(&ma->mcr_ipktbuf);
+ printf(" %d: opkt ", i);
+ ubsec_dump_pb(&ma->mcr_opktbuf);
+ ma++;
+ }
+ printf("END MCR\n");
+}
+
+static int __init mod_init(void) {
+ return ssb_driver_register(&ubsec_ssb_driver);
+}
+
+static void __exit mod_exit(void) {
+ ssb_driver_unregister(&ubsec_ssb_driver);
+}
+
+module_init(mod_init);
+module_exit(mod_exit);
+
+// Meta information
+MODULE_AUTHOR("Daniel Mueller <daniel@danm.de>");
+MODULE_LICENSE("BSD");
+MODULE_DESCRIPTION("OCF driver for BCM5365P IPSec Core");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
projects / openwrt.git / commitdiff