rename target/linux/generic-2.6 to generic

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21952 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 1009 deletions

diff --git a/target/linux/generic-2.6/files/crypto/ocf/pasemi/pasemi.c b/target/linux/generic-2.6/files/crypto/ocf/pasemi/pasemi.c
deleted file mode 100644
index c3bb9313d3..0000000000
--- a/target/linux/generic-2.6/files/crypto/ocf/pasemi/pasemi.c
+++ /dev/null
@@ -1,1009 +0,0 @@
-/*
- * Copyright (C) 2007 PA Semi, Inc
- *
- * Driver for the PA Semi PWRficient DMA Crypto Engine
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-#ifndef AUTOCONF_INCLUDED
-#include <linux/config.h>
-#endif
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/timer.h>
-#include <linux/random.h>
-#include <linux/skbuff.h>
-#include <asm/scatterlist.h>
-#include <linux/moduleparam.h>
-#include <linux/pci.h>
-#include <cryptodev.h>
-#include <uio.h>
-#include "pasemi_fnu.h"
-
-#define DRV_NAME "pasemi"
-
-#define TIMER_INTERVAL 1000
-
-static void __devexit pasemi_dma_remove(struct pci_dev *pdev);
-static struct pasdma_status volatile * dma_status;
-
-static int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Enable debug");
-
-static void pasemi_desc_start(struct pasemi_desc *desc, u64 hdr)
-{
-	desc->postop = 0;
-	desc->quad[0] = hdr;
-	desc->quad_cnt = 1;
-	desc->size = 1;
-}
-
-static void pasemi_desc_build(struct pasemi_desc *desc, u64 val)
-{
-	desc->quad[desc->quad_cnt++] = val;
-	desc->size = (desc->quad_cnt + 1) / 2;
-}
-
-static void pasemi_desc_hdr(struct pasemi_desc *desc, u64 hdr)
-{
-	desc->quad[0] |= hdr;
-}
-
-static int pasemi_desc_size(struct pasemi_desc *desc)
-{
-	return desc->size;
-}
-
-static void pasemi_ring_add_desc(
-				 struct pasemi_fnu_txring *ring,
-				 struct pasemi_desc *desc,
-				 struct cryptop *crp) {
-	int i;
-	int ring_index = 2 * (ring->next_to_fill & (TX_RING_SIZE-1));
-
-	TX_DESC_INFO(ring, ring->next_to_fill).desc_size = desc->size;
-	TX_DESC_INFO(ring, ring->next_to_fill).desc_postop = desc->postop;
-	TX_DESC_INFO(ring, ring->next_to_fill).cf_crp = crp;
-
-	for (i = 0; i < desc->quad_cnt; i += 2) {
-		ring_index = 2 * (ring->next_to_fill & (TX_RING_SIZE-1));
-		ring->desc[ring_index] = desc->quad[i];
-		ring->desc[ring_index + 1] = desc->quad[i + 1];
-		ring->next_to_fill++;
-	}
-
-	if (desc->quad_cnt & 1)
-		ring->desc[ring_index + 1] = 0;
-}
-
-static void pasemi_ring_incr(struct pasemi_softc *sc, int chan_index, int incr)
-{
-	out_le32(sc->dma_regs + PAS_DMA_TXCHAN_INCR(sc->base_chan + chan_index),
-		 incr);
-}
-
-/*
- * Generate a new software session.
- */
-static int
-pasemi_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
-{
-	struct cryptoini *c, *encini = NULL, *macini = NULL;
-	struct pasemi_softc *sc = device_get_softc(dev);
-	struct pasemi_session *ses = NULL, **sespp;
-	int sesn, blksz = 0;
-	u64 ccmd = 0;
-	unsigned long flags;
-	struct pasemi_desc init_desc;
-	struct pasemi_fnu_txring *txring;
-
-	DPRINTF("%s()\n", __FUNCTION__);
-	if (sidp == NULL || cri == NULL || sc == NULL) {
-		DPRINTF("%s,%d - EINVAL\n", __FILE__, __LINE__);
-		return -EINVAL;
-	}
-	for (c = cri; c != NULL; c = c->cri_next) {
-		if (ALG_IS_SIG(c->cri_alg)) {
-			if (macini)
-				return -EINVAL;
-			macini = c;
-		} else if (ALG_IS_CIPHER(c->cri_alg)) {
-			if (encini)
-				return -EINVAL;
-			encini = c;
-		} else {
-			DPRINTF("UNKNOWN c->cri_alg %d\n", c->cri_alg);
-			return -EINVAL;
-		}
-	}
-	if (encini == NULL && macini == NULL)
-		return -EINVAL;
-	if (encini) {
-		/* validate key length */
-		switch (encini->cri_alg) {
-		case CRYPTO_DES_CBC:
-			if (encini->cri_klen != 64)
-				return -EINVAL;
-			ccmd = DMA_CALGO_DES;
-			break;
-		case CRYPTO_3DES_CBC:
-			if (encini->cri_klen != 192)
-				return -EINVAL;
-			ccmd = DMA_CALGO_3DES;
-			break;
-		case CRYPTO_AES_CBC:
-			if (encini->cri_klen != 128 &&
-			    encini->cri_klen != 192 &&
-			    encini->cri_klen != 256)
-				return -EINVAL;
-			ccmd = DMA_CALGO_AES;
-			break;
-		case CRYPTO_ARC4:
-			if (encini->cri_klen != 128)
-				return -EINVAL;
-			ccmd = DMA_CALGO_ARC;
-			break;
-		default:
-			DPRINTF("UNKNOWN encini->cri_alg %d\n",
-				encini->cri_alg);
-			return -EINVAL;
-		}
-	}
-
-	if (macini) {
-		switch (macini->cri_alg) {
-		case CRYPTO_MD5:
-		case CRYPTO_MD5_HMAC:
-			blksz = 16;
-			break;
-		case CRYPTO_SHA1:
-		case CRYPTO_SHA1_HMAC:
-			blksz = 20;
-			break;
-		default:
-			DPRINTF("UNKNOWN macini->cri_alg %d\n",
-				macini->cri_alg);
-			return -EINVAL;
-		}
-		if (((macini->cri_klen + 7) / 8) > blksz) {
-			DPRINTF("key length %d bigger than blksize %d not supported\n",
-				((macini->cri_klen + 7) / 8), blksz);
-			return -EINVAL;
-		}
-	}
-
-	for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
-		if (sc->sc_sessions[sesn] == NULL) {
-			sc->sc_sessions[sesn] = (struct pasemi_session *)
-				kzalloc(sizeof(struct pasemi_session), GFP_ATOMIC);
-			ses = sc->sc_sessions[sesn];
-			break;
-		} else if (sc->sc_sessions[sesn]->used == 0) {
-			ses = sc->sc_sessions[sesn];
-			break;
-		}
-	}
-
-	if (ses == NULL) {
-		sespp = (struct pasemi_session **)
-			kzalloc(sc->sc_nsessions * 2 *
-				sizeof(struct pasemi_session *), GFP_ATOMIC);
-		if (sespp == NULL)
-			return -ENOMEM;
-		memcpy(sespp, sc->sc_sessions,
-		       sc->sc_nsessions * sizeof(struct pasemi_session *));
-		kfree(sc->sc_sessions);
-		sc->sc_sessions = sespp;
-		sesn = sc->sc_nsessions;
-		ses = sc->sc_sessions[sesn] = (struct pasemi_session *)
-			kzalloc(sizeof(struct pasemi_session), GFP_ATOMIC);
-		if (ses == NULL)
-			return -ENOMEM;
-		sc->sc_nsessions *= 2;
-	}
-
-	ses->used = 1;
-
-	ses->dma_addr = pci_map_single(sc->dma_pdev, (void *) ses->civ,
-				       sizeof(struct pasemi_session), DMA_TO_DEVICE);
-
-	/* enter the channel scheduler */
-	spin_lock_irqsave(&sc->sc_chnlock, flags);
-
-	/* ARC4 has to be processed by the even channel */
-	if (encini && (encini->cri_alg == CRYPTO_ARC4))
-		ses->chan = sc->sc_lastchn & ~1;
-	else
-		ses->chan = sc->sc_lastchn;
-	sc->sc_lastchn = (sc->sc_lastchn + 1) % sc->sc_num_channels;
-
-	spin_unlock_irqrestore(&sc->sc_chnlock, flags);
-
-	txring = &sc->tx[ses->chan];
-
-	if (encini) {
-		ses->ccmd = ccmd;
-
-		/* get an IV */
-		/* XXX may read fewer than requested */
-		get_random_bytes(ses->civ, sizeof(ses->civ));
-
-		ses->keysz = (encini->cri_klen - 63) / 64;
-		memcpy(ses->key, encini->cri_key, (ses->keysz + 1) * 8);
-
-		pasemi_desc_start(&init_desc,
-				  XCT_CTRL_HDR(ses->chan, (encini && macini) ? 0x68 : 0x40, DMA_FN_CIV0));
-		pasemi_desc_build(&init_desc,
-				  XCT_FUN_SRC_PTR((encini && macini) ? 0x68 : 0x40, ses->dma_addr));
-	}
-	if (macini) {
-		if (macini->cri_alg == CRYPTO_MD5_HMAC ||
-		    macini->cri_alg == CRYPTO_SHA1_HMAC)
-			memcpy(ses->hkey, macini->cri_key, blksz);
-		else {
-			/* Load initialization constants(RFC 1321, 3174) */
-			ses->hiv[0] = 0x67452301efcdab89ULL;
-			ses->hiv[1] = 0x98badcfe10325476ULL;
-			ses->hiv[2] = 0xc3d2e1f000000000ULL;
-		}
-		ses->hseq = 0ULL;
-	}
-
-	spin_lock_irqsave(&txring->fill_lock, flags);
-
-	if (((txring->next_to_fill + pasemi_desc_size(&init_desc)) -
-	     txring->next_to_clean) > TX_RING_SIZE) {
-		spin_unlock_irqrestore(&txring->fill_lock, flags);
-		return ERESTART;
-	}
-
-	if (encini) {
-		pasemi_ring_add_desc(txring, &init_desc, NULL);
-		pasemi_ring_incr(sc, ses->chan,
-				 pasemi_desc_size(&init_desc));
-	}
-
-	txring->sesn = sesn;
-	spin_unlock_irqrestore(&txring->fill_lock, flags);
-
-	*sidp = PASEMI_SID(sesn);
-	return 0;
-}
-
-/*
- * Deallocate a session.
- */
-static int
-pasemi_freesession(device_t dev, u_int64_t tid)
-{
-	struct pasemi_softc *sc = device_get_softc(dev);
-	int session;
-	u_int32_t sid = ((u_int32_t) tid) & 0xffffffff;
-
-	DPRINTF("%s()\n", __FUNCTION__);
-
-	if (sc == NULL)
-		return -EINVAL;
-	session = PASEMI_SESSION(sid);
-	if (session >= sc->sc_nsessions || !sc->sc_sessions[session])
-		return -EINVAL;
-
-	pci_unmap_single(sc->dma_pdev,
-			 sc->sc_sessions[session]->dma_addr,
-			 sizeof(struct pasemi_session), DMA_TO_DEVICE);
-	memset(sc->sc_sessions[session], 0,
-	       sizeof(struct pasemi_session));
-
-	return 0;
-}
-
-static int
-pasemi_process(device_t dev, struct cryptop *crp, int hint)
-{
-
-	int err = 0, ivsize, srclen = 0, reinit = 0, reinit_size = 0, chsel;
-	struct pasemi_softc *sc = device_get_softc(dev);
-	struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
-	caddr_t ivp;
-	struct pasemi_desc init_desc, work_desc;
-	struct pasemi_session *ses;
-	struct sk_buff *skb;
-	struct uio *uiop;
-	unsigned long flags;
-	struct pasemi_fnu_txring *txring;
-
-	DPRINTF("%s()\n", __FUNCTION__);
-
-	if (crp == NULL || crp->crp_callback == NULL || sc == NULL)
-		return -EINVAL;
-
-	crp->crp_etype = 0;
-	if (PASEMI_SESSION(crp->crp_sid) >= sc->sc_nsessions)
-		return -EINVAL;
-
-	ses = sc->sc_sessions[PASEMI_SESSION(crp->crp_sid)];
-
-	crd1 = crp->crp_desc;
-	if (crd1 == NULL) {
-		err = -EINVAL;
-		goto errout;
-	}
-	crd2 = crd1->crd_next;
-
-	if (ALG_IS_SIG(crd1->crd_alg)) {
-		maccrd = crd1;
-		if (crd2 == NULL)
-			enccrd = NULL;
-		else if (ALG_IS_CIPHER(crd2->crd_alg) &&
-			 (crd2->crd_flags & CRD_F_ENCRYPT) == 0)
-			enccrd = crd2;
-		else
-			goto erralg;
-	} else if (ALG_IS_CIPHER(crd1->crd_alg)) {
-		enccrd = crd1;
-		if (crd2 == NULL)
-			maccrd = NULL;
-		else if (ALG_IS_SIG(crd2->crd_alg) &&
-			 (crd1->crd_flags & CRD_F_ENCRYPT))
-			maccrd = crd2;
-		else
-			goto erralg;
-	} else
-		goto erralg;
-
-	chsel = ses->chan;
-
-	txring = &sc->tx[chsel];
-
-	if (enccrd && !maccrd) {
-		if (enccrd->crd_alg == CRYPTO_ARC4)
-			reinit = 1;
-		reinit_size = 0x40;
-		srclen = crp->crp_ilen;
-
-		pasemi_desc_start(&work_desc, XCT_FUN_O | XCT_FUN_I
-				  | XCT_FUN_FUN(chsel));
-		if (enccrd->crd_flags & CRD_F_ENCRYPT)
-			pasemi_desc_hdr(&work_desc, XCT_FUN_CRM_ENC);
-		else
-			pasemi_desc_hdr(&work_desc, XCT_FUN_CRM_DEC);
-	} else if (enccrd && maccrd) {
-		if (enccrd->crd_alg == CRYPTO_ARC4)
-			reinit = 1;
-		reinit_size = 0x68;
-
-		if (enccrd->crd_flags & CRD_F_ENCRYPT) {
-			/* Encrypt -> Authenticate */
-			pasemi_desc_start(&work_desc, XCT_FUN_O | XCT_FUN_I | XCT_FUN_CRM_ENC_SIG
-					  | XCT_FUN_A | XCT_FUN_FUN(chsel));
-			srclen = maccrd->crd_skip + maccrd->crd_len;
-		} else {
-			/* Authenticate -> Decrypt */
-			pasemi_desc_start(&work_desc, XCT_FUN_O | XCT_FUN_I | XCT_FUN_CRM_SIG_DEC
-					  | XCT_FUN_24BRES | XCT_FUN_FUN(chsel));
-			pasemi_desc_build(&work_desc, 0);
-			pasemi_desc_build(&work_desc, 0);
-			pasemi_desc_build(&work_desc, 0);
-			work_desc.postop = PASEMI_CHECK_SIG;
-			srclen = crp->crp_ilen;
-		}
-
-		pasemi_desc_hdr(&work_desc, XCT_FUN_SHL(maccrd->crd_skip / 4));
-		pasemi_desc_hdr(&work_desc, XCT_FUN_CHL(enccrd->crd_skip - maccrd->crd_skip));
-	} else if (!enccrd && maccrd) {
-		srclen = maccrd->crd_len;
-
-		pasemi_desc_start(&init_desc,
-				  XCT_CTRL_HDR(chsel, 0x58, DMA_FN_HKEY0));
-		pasemi_desc_build(&init_desc,
-				  XCT_FUN_SRC_PTR(0x58, ((struct pasemi_session *)ses->dma_addr)->hkey));
-
-		pasemi_desc_start(&work_desc, XCT_FUN_O | XCT_FUN_I | XCT_FUN_CRM_SIG
-				  | XCT_FUN_A | XCT_FUN_FUN(chsel));
-	}
-
-	if (enccrd) {
-		switch (enccrd->crd_alg) {
-		case CRYPTO_3DES_CBC:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_ALG_3DES |
-					XCT_FUN_BCM_CBC);
-			ivsize = sizeof(u64);
-			break;
-		case CRYPTO_DES_CBC:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_ALG_DES |
-					XCT_FUN_BCM_CBC);
-			ivsize = sizeof(u64);
-			break;
-		case CRYPTO_AES_CBC:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_ALG_AES |
-					XCT_FUN_BCM_CBC);
-			ivsize = 2 * sizeof(u64);
-			break;
-		case CRYPTO_ARC4:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_ALG_ARC);
-			ivsize = 0;
-			break;
-		default:
-			printk(DRV_NAME ": unimplemented enccrd->crd_alg %d\n",
-			       enccrd->crd_alg);
-			err = -EINVAL;
-			goto errout;
-		}
-
-		ivp = (ivsize == sizeof(u64)) ? (caddr_t) &ses->civ[1] : (caddr_t) &ses->civ[0];
-		if (enccrd->crd_flags & CRD_F_ENCRYPT) {
-			if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
-				memcpy(ivp, enccrd->crd_iv, ivsize);
-			/* If IV is not present in the buffer already, it has to be copied there */
-			if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0)
-				crypto_copyback(crp->crp_flags, crp->crp_buf,
-						enccrd->crd_inject, ivsize, ivp);
-		} else {
-			if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
-				/* IV is provided expicitly in descriptor */
-				memcpy(ivp, enccrd->crd_iv, ivsize);
-			else
-				/* IV is provided in the packet */
-				crypto_copydata(crp->crp_flags, crp->crp_buf,
-						enccrd->crd_inject, ivsize,
-						ivp);
-		}
-	}
-
-	if (maccrd) {
-		switch (maccrd->crd_alg) {
-		case CRYPTO_MD5:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_SIG_MD5 |
-					XCT_FUN_HSZ((crp->crp_ilen - maccrd->crd_inject) / 4));
-			break;
-		case CRYPTO_SHA1:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_SIG_SHA1 |
-					XCT_FUN_HSZ((crp->crp_ilen - maccrd->crd_inject) / 4));
-			break;
-		case CRYPTO_MD5_HMAC:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_SIG_HMAC_MD5 |
-					XCT_FUN_HSZ((crp->crp_ilen - maccrd->crd_inject) / 4));
-			break;
-		case CRYPTO_SHA1_HMAC:
-			pasemi_desc_hdr(&work_desc, XCT_FUN_SIG_HMAC_SHA1 |
-					XCT_FUN_HSZ((crp->crp_ilen - maccrd->crd_inject) / 4));
-			break;
-		default:
-			printk(DRV_NAME ": unimplemented maccrd->crd_alg %d\n",
-			       maccrd->crd_alg);
-			err = -EINVAL;
-			goto errout;
-		}
-	}
-
-	if (crp->crp_flags & CRYPTO_F_SKBUF) {
-		/* using SKB buffers */
-		skb = (struct sk_buff *)crp->crp_buf;
-		if (skb_shinfo(skb)->nr_frags) {
-			printk(DRV_NAME ": skb frags unimplemented\n");
-			err = -EINVAL;
-			goto errout;
-		}
-		pasemi_desc_build(
-			&work_desc,
-			XCT_FUN_DST_PTR(skb->len, pci_map_single(
-						sc->dma_pdev, skb->data,
-						skb->len, DMA_TO_DEVICE)));
-		pasemi_desc_build(
-			&work_desc,
-			XCT_FUN_SRC_PTR(
-				srclen, pci_map_single(
-					sc->dma_pdev, skb->data,
-					srclen, DMA_TO_DEVICE)));
-		pasemi_desc_hdr(&work_desc, XCT_FUN_LLEN(srclen));
-	} else if (crp->crp_flags & CRYPTO_F_IOV) {
-		/* using IOV buffers */
-		uiop = (struct uio *)crp->crp_buf;
-		if (uiop->uio_iovcnt > 1) {
-			printk(DRV_NAME ": iov frags unimplemented\n");
-			err = -EINVAL;
-			goto errout;
-		}
-
-		/* crp_olen is never set; always use crp_ilen */
-		pasemi_desc_build(
-			&work_desc,
-			XCT_FUN_DST_PTR(crp->crp_ilen, pci_map_single(
-						sc->dma_pdev,
-						uiop->uio_iov->iov_base,
-						crp->crp_ilen, DMA_TO_DEVICE)));
-		pasemi_desc_hdr(&work_desc, XCT_FUN_LLEN(srclen));
-
-		pasemi_desc_build(
-			&work_desc,
-			XCT_FUN_SRC_PTR(srclen, pci_map_single(
-						sc->dma_pdev,
-						uiop->uio_iov->iov_base,
-						srclen, DMA_TO_DEVICE)));
-	} else {
-		/* using contig buffers */
-		pasemi_desc_build(
-			&work_desc,
-			XCT_FUN_DST_PTR(crp->crp_ilen, pci_map_single(
-						sc->dma_pdev,
-						crp->crp_buf,
-						crp->crp_ilen, DMA_TO_DEVICE)));
-		pasemi_desc_build(
-			&work_desc,
-			XCT_FUN_SRC_PTR(srclen, pci_map_single(
-						sc->dma_pdev,
-						crp->crp_buf, srclen,
-						DMA_TO_DEVICE)));
-		pasemi_desc_hdr(&work_desc, XCT_FUN_LLEN(srclen));
-	}
-
-	spin_lock_irqsave(&txring->fill_lock, flags);
-
-	if (txring->sesn != PASEMI_SESSION(crp->crp_sid)) {
-		txring->sesn = PASEMI_SESSION(crp->crp_sid);
-		reinit = 1;
-	}
-
-	if (enccrd) {
-		pasemi_desc_start(&init_desc,
-				  XCT_CTRL_HDR(chsel, reinit ? reinit_size : 0x10, DMA_FN_CIV0));
-		pasemi_desc_build(&init_desc,
-				  XCT_FUN_SRC_PTR(reinit ? reinit_size : 0x10, ses->dma_addr));
-	}
-
-	if (((txring->next_to_fill + pasemi_desc_size(&init_desc) +
-	      pasemi_desc_size(&work_desc)) -
-	     txring->next_to_clean) > TX_RING_SIZE) {
-		spin_unlock_irqrestore(&txring->fill_lock, flags);
-		err = ERESTART;
-		goto errout;
-	}
-
-	pasemi_ring_add_desc(txring, &init_desc, NULL);
-	pasemi_ring_add_desc(txring, &work_desc, crp);
-
-	pasemi_ring_incr(sc, chsel,
-			 pasemi_desc_size(&init_desc) +
-			 pasemi_desc_size(&work_desc));
-
-	spin_unlock_irqrestore(&txring->fill_lock, flags);
-
-	mod_timer(&txring->crypto_timer, jiffies + TIMER_INTERVAL);
-
-	return 0;
-
-erralg:
-	printk(DRV_NAME ": unsupported algorithm or algorithm order alg1 %d alg2 %d\n",
-	       crd1->crd_alg, crd2->crd_alg);
-	err = -EINVAL;
-
-errout:
-	if (err != ERESTART) {
-		crp->crp_etype = err;
-		crypto_done(crp);
-	}
-	return err;
-}
-
-static int pasemi_clean_tx(struct pasemi_softc *sc, int chan)
-{
-	int i, j, ring_idx;
-	struct pasemi_fnu_txring *ring = &sc->tx[chan];
-	u16 delta_cnt;
-	int flags, loops = 10;
-	int desc_size;
-	struct cryptop *crp;
-
-	spin_lock_irqsave(&ring->clean_lock, flags);
-
-	while ((delta_cnt = (dma_status->tx_sta[sc->base_chan + chan]
-			     & PAS_STATUS_PCNT_M) - ring->total_pktcnt)
-	       && loops--) {
-
-		for (i = 0; i < delta_cnt; i++) {
-			desc_size = TX_DESC_INFO(ring, ring->next_to_clean).desc_size;
-			crp = TX_DESC_INFO(ring, ring->next_to_clean).cf_crp;
-			if (crp) {
-				ring_idx = 2 * (ring->next_to_clean & (TX_RING_SIZE-1));
-				if (TX_DESC_INFO(ring, ring->next_to_clean).desc_postop & PASEMI_CHECK_SIG) {
-					/* Need to make sure signature matched,
-					 * if not - return error */
-					if (!(ring->desc[ring_idx + 1] & (1ULL << 63)))
-						crp->crp_etype = -EINVAL;
-				}
-				crypto_done(TX_DESC_INFO(ring,
-							 ring->next_to_clean).cf_crp);
-				TX_DESC_INFO(ring, ring->next_to_clean).cf_crp = NULL;
-				pci_unmap_single(
-					sc->dma_pdev,
-					XCT_PTR_ADDR_LEN(ring->desc[ring_idx + 1]),
-					PCI_DMA_TODEVICE);
-
-				ring->desc[ring_idx] = ring->desc[ring_idx + 1] = 0;
-
-				ring->next_to_clean++;
-				for (j = 1; j < desc_size; j++) {
-					ring_idx = 2 *
-						(ring->next_to_clean &
-						 (TX_RING_SIZE-1));
-					pci_unmap_single(
-						sc->dma_pdev,
-						XCT_PTR_ADDR_LEN(ring->desc[ring_idx]),
-						PCI_DMA_TODEVICE);
-					if (ring->desc[ring_idx + 1])
-						pci_unmap_single(
-							sc->dma_pdev,
-							XCT_PTR_ADDR_LEN(
-								ring->desc[
-									ring_idx + 1]),
-							PCI_DMA_TODEVICE);
-					ring->desc[ring_idx] =
-						ring->desc[ring_idx + 1] = 0;
-					ring->next_to_clean++;
-				}
-			} else {
-				for (j = 0; j < desc_size; j++) {
-					ring_idx = 2 * (ring->next_to_clean & (TX_RING_SIZE-1));
-					ring->desc[ring_idx] =
-						ring->desc[ring_idx + 1] = 0;
-					ring->next_to_clean++;
-				}
-			}
-		}
-
-		ring->total_pktcnt += delta_cnt;
-	}
-	spin_unlock_irqrestore(&ring->clean_lock, flags);
-
-	return 0;
-}
-
-static void sweepup_tx(struct pasemi_softc *sc)
-{
-	int i;
-
-	for (i = 0; i < sc->sc_num_channels; i++)
-		pasemi_clean_tx(sc, i);
-}
-
-static irqreturn_t pasemi_intr(int irq, void *arg, struct pt_regs *regs)
-{
-	struct pasemi_softc *sc = arg;
-	unsigned int reg;
-	int chan = irq - sc->base_irq;
-	int chan_index = sc->base_chan + chan;
-	u64 stat = dma_status->tx_sta[chan_index];
-
-	DPRINTF("%s()\n", __FUNCTION__);
-
-	if (!(stat & PAS_STATUS_CAUSE_M))
-		return IRQ_NONE;
-
-	pasemi_clean_tx(sc, chan);
-
-	stat = dma_status->tx_sta[chan_index];
-
-	reg = PAS_IOB_DMA_TXCH_RESET_PINTC |
-		PAS_IOB_DMA_TXCH_RESET_PCNT(sc->tx[chan].total_pktcnt);
-
-	if (stat & PAS_STATUS_SOFT)
-		reg |= PAS_IOB_DMA_RXCH_RESET_SINTC;
-
-	out_le32(sc->iob_regs + PAS_IOB_DMA_TXCH_RESET(chan_index), reg);
-
-
-	return IRQ_HANDLED;
-}
-
-static int pasemi_dma_setup_tx_resources(struct pasemi_softc *sc, int chan)
-{
-	u32 val;
-	int chan_index = chan + sc->base_chan;
-	int ret;
-	struct pasemi_fnu_txring *ring;
-
-	ring = &sc->tx[chan];
-
-	spin_lock_init(&ring->fill_lock);
-	spin_lock_init(&ring->clean_lock);
-
-	ring->desc_info = kzalloc(sizeof(struct pasemi_desc_info) *
-				  TX_RING_SIZE, GFP_KERNEL);
-	if (!ring->desc_info)
-		return -ENOMEM;
-
-	/* Allocate descriptors */
-	ring->desc = dma_alloc_coherent(&sc->dma_pdev->dev,
-					TX_RING_SIZE *
-					2 * sizeof(u64),
-					&ring->dma, GFP_KERNEL);
-	if (!ring->desc)
-		return -ENOMEM;
-
-	memset((void *) ring->desc, 0, TX_RING_SIZE * 2 * sizeof(u64));
-
-	out_le32(sc->iob_regs + PAS_IOB_DMA_TXCH_RESET(chan_index), 0x30);
-
-	ring->total_pktcnt = 0;
-
-	out_le32(sc->dma_regs + PAS_DMA_TXCHAN_BASEL(chan_index),
-		 PAS_DMA_TXCHAN_BASEL_BRBL(ring->dma));
-
-	val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->dma >> 32);
-	val |= PAS_DMA_TXCHAN_BASEU_SIZ(TX_RING_SIZE >> 2);
-
-	out_le32(sc->dma_regs + PAS_DMA_TXCHAN_BASEU(chan_index), val);
-
-	out_le32(sc->dma_regs + PAS_DMA_TXCHAN_CFG(chan_index),
-		 PAS_DMA_TXCHAN_CFG_TY_FUNC |
-		 PAS_DMA_TXCHAN_CFG_TATTR(chan) |
-		 PAS_DMA_TXCHAN_CFG_WT(2));
-
-	/* enable tx channel */
-	out_le32(sc->dma_regs +
-		 PAS_DMA_TXCHAN_TCMDSTA(chan_index),
-		 PAS_DMA_TXCHAN_TCMDSTA_EN);
-
-	out_le32(sc->iob_regs + PAS_IOB_DMA_TXCH_CFG(chan_index),
-		 PAS_IOB_DMA_TXCH_CFG_CNTTH(1000));
-
-	ring->next_to_fill = 0;
-	ring->next_to_clean = 0;
-
-	snprintf(ring->irq_name, sizeof(ring->irq_name),
-		 "%s%d", "crypto", chan);
-
-	ring->irq = irq_create_mapping(NULL, sc->base_irq + chan);
-	ret = request_irq(ring->irq, (irq_handler_t)
-			  pasemi_intr, IRQF_DISABLED, ring->irq_name, sc);
-	if (ret) {
-		printk(KERN_ERR DRV_NAME ": failed to hook irq %d ret %d\n",
-		       ring->irq, ret);
-		ring->irq = -1;
-		return ret;
-	}
-
-	setup_timer(&ring->crypto_timer, (void *) sweepup_tx, (unsigned long) sc);
-
-	return 0;
-}
-
-static device_method_t pasemi_methods = {
-	/* crypto device methods */
-	DEVMETHOD(cryptodev_newsession,		pasemi_newsession),
-	DEVMETHOD(cryptodev_freesession,	pasemi_freesession),
-	DEVMETHOD(cryptodev_process,		pasemi_process),
-};
-
-/* Set up the crypto device structure, private data,
- * and anything else we need before we start */
-
-static int __devinit
-pasemi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
-	struct pasemi_softc *sc;
-	int ret, i;
-
-	DPRINTF(KERN_ERR "%s()\n", __FUNCTION__);
-
-	sc = kzalloc(sizeof(*sc), GFP_KERNEL);
-	if (!sc)
-		return -ENOMEM;
-
-	softc_device_init(sc, DRV_NAME, 1, pasemi_methods);
-
-	pci_set_drvdata(pdev, sc);
-
-	spin_lock_init(&sc->sc_chnlock);
-
-	sc->sc_sessions = (struct pasemi_session **)
-		kzalloc(PASEMI_INITIAL_SESSIONS *
-			sizeof(struct pasemi_session *), GFP_ATOMIC);
-	if (sc->sc_sessions == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	sc->sc_nsessions = PASEMI_INITIAL_SESSIONS;
-	sc->sc_lastchn = 0;
-	sc->base_irq = pdev->irq + 6;
-	sc->base_chan = 6;
-	sc->sc_cid = -1;
-	sc->dma_pdev = pdev;
-
-	sc->iob_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa001, NULL);
-	if (!sc->iob_pdev) {
-		dev_err(&pdev->dev, "Can't find I/O Bridge\n");
-		ret = -ENODEV;
-		goto out;
-	}
-
-	/* This is hardcoded and ugly, but we have some firmware versions
-	 * who don't provide the register space in the device tree. Luckily
-	 * they are at well-known locations so we can just do the math here.
-	 */
-	sc->dma_regs =
-		ioremap(0xe0000000 + (sc->dma_pdev->devfn << 12), 0x2000);
-	sc->iob_regs =
-		ioremap(0xe0000000 + (sc->iob_pdev->devfn << 12), 0x2000);
-	if (!sc->dma_regs || !sc->iob_regs) {
-		dev_err(&pdev->dev, "Can't map registers\n");
-		ret = -ENODEV;
-		goto out;
-	}
-
-	dma_status = __ioremap(0xfd800000, 0x1000, 0);
-	if (!dma_status) {
-		ret = -ENODEV;
-		dev_err(&pdev->dev, "Can't map dmastatus space\n");
-		goto out;
-	}
-
-	sc->tx = (struct pasemi_fnu_txring *)
-		kzalloc(sizeof(struct pasemi_fnu_txring)
-			* 8, GFP_KERNEL);
-	if (!sc->tx) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	/* Initialize the h/w */
-	out_le32(sc->dma_regs + PAS_DMA_COM_CFG,
-		 (in_le32(sc->dma_regs + PAS_DMA_COM_CFG) |
-		  PAS_DMA_COM_CFG_FWF));
-	out_le32(sc->dma_regs + PAS_DMA_COM_TXCMD, PAS_DMA_COM_TXCMD_EN);
-
-	for (i = 0; i < PASEMI_FNU_CHANNELS; i++) {
-		sc->sc_num_channels++;
-		ret = pasemi_dma_setup_tx_resources(sc, i);
-		if (ret)
-			goto out;
-	}
-
-	sc->sc_cid = crypto_get_driverid(softc_get_device(sc),
-					 CRYPTOCAP_F_HARDWARE);
-	if (sc->sc_cid < 0) {
-		printk(KERN_ERR DRV_NAME ": could not get crypto driver id\n");
-		ret = -ENXIO;
-		goto out;
-	}
-
-	/* register algorithms with the framework */
-	printk(DRV_NAME ":");
-
-	crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0);
-	crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
-	crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0);
-	crypto_register(sc->sc_cid, CRYPTO_ARC4, 0, 0);
-	crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0);
-	crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0);
-	crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0);
-	crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0);
-
-	return 0;
-
-out:
-	pasemi_dma_remove(pdev);
-	return ret;
-}
-
-#define MAX_RETRIES 5000
-
-static void pasemi_free_tx_resources(struct pasemi_softc *sc, int chan)
-{
-	struct pasemi_fnu_txring *ring = &sc->tx[chan];
-	int chan_index = chan + sc->base_chan;
-	int retries;
-	u32 stat;
-
-	/* Stop the channel */
-	out_le32(sc->dma_regs +
-		 PAS_DMA_TXCHAN_TCMDSTA(chan_index),
-		 PAS_DMA_TXCHAN_TCMDSTA_ST);
-
-	for (retries = 0; retries < MAX_RETRIES; retries++) {
-		stat = in_le32(sc->dma_regs +
-			       PAS_DMA_TXCHAN_TCMDSTA(chan_index));
-		if (!(stat & PAS_DMA_TXCHAN_TCMDSTA_ACT))
-			break;
-		cond_resched();
-	}
-
-	if (stat & PAS_DMA_TXCHAN_TCMDSTA_ACT)
-		dev_err(&sc->dma_pdev->dev, "Failed to stop tx channel %d\n",
-			chan_index);
-
-	/* Disable the channel */
-	out_le32(sc->dma_regs +
-		 PAS_DMA_TXCHAN_TCMDSTA(chan_index),
-		 0);
-
-	if (ring->desc_info)
-		kfree((void *) ring->desc_info);
-	if (ring->desc)
-		dma_free_coherent(&sc->dma_pdev->dev,
-				  TX_RING_SIZE *
-				  2 * sizeof(u64),
-				  (void *) ring->desc, ring->dma);
-	if (ring->irq != -1)
-		free_irq(ring->irq, sc);
-
-	del_timer(&ring->crypto_timer);
-}
-
-static void __devexit pasemi_dma_remove(struct pci_dev *pdev)
-{
-	struct pasemi_softc *sc = pci_get_drvdata(pdev);
-	int i;
-
-	DPRINTF("%s()\n", __FUNCTION__);
-
-	if (sc->sc_cid >= 0) {
-		crypto_unregister_all(sc->sc_cid);
-	}
-
-	if (sc->tx) {
-		for (i = 0; i < sc->sc_num_channels; i++)
-			pasemi_free_tx_resources(sc, i);
-
-		kfree(sc->tx);
-	}
-	if (sc->sc_sessions) {
-		for (i = 0; i < sc->sc_nsessions; i++)
-			kfree(sc->sc_sessions[i]);
-		kfree(sc->sc_sessions);
-	}
-	if (sc->iob_pdev)
-		pci_dev_put(sc->iob_pdev);
-	if (sc->dma_regs)
-		iounmap(sc->dma_regs);
-	if (sc->iob_regs)
-		iounmap(sc->iob_regs);
-	kfree(sc);
-}
-
-static struct pci_device_id pasemi_dma_pci_tbl[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_PASEMI, 0xa007) },
-};
-
-MODULE_DEVICE_TABLE(pci, pasemi_dma_pci_tbl);
-
-static struct pci_driver pasemi_dma_driver = {
-	.name		= "pasemi_dma",
-	.id_table	= pasemi_dma_pci_tbl,
-	.probe		= pasemi_dma_probe,
-	.remove		= __devexit_p(pasemi_dma_remove),
-};
-
-static void __exit pasemi_dma_cleanup_module(void)
-{
-	pci_unregister_driver(&pasemi_dma_driver);
-	__iounmap(dma_status);
-	dma_status = NULL;
-}
-
-int pasemi_dma_init_module(void)
-{
-	return pci_register_driver(&pasemi_dma_driver);
-}
-
-module_init(pasemi_dma_init_module);
-module_exit(pasemi_dma_cleanup_module);
-
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_AUTHOR("Egor Martovetsky egor@pasemi.com");
-MODULE_DESCRIPTION("OCF driver for PA Semi PWRficient DMA Crypto Engine");