diff options
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/talitos/talitos.c')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/talitos/talitos.c | 1355 |
1 files changed, 0 insertions, 1355 deletions
diff --git a/target/linux/generic/files/crypto/ocf/talitos/talitos.c b/target/linux/generic/files/crypto/ocf/talitos/talitos.c deleted file mode 100644 index c4bc8c0fdb..0000000000 --- a/target/linux/generic/files/crypto/ocf/talitos/talitos.c +++ /dev/null @@ -1,1355 +0,0 @@ -/* - * crypto/ocf/talitos/talitos.c - * - * An OCF-Linux module that uses Freescale's SEC to do the crypto. - * Based on crypto/ocf/hifn and crypto/ocf/safe OCF drivers - * - * Copyright (c) 2006 Freescale Semiconductor, Inc. - * - * This code written by Kim A. B. Phillips <kim.phillips@freescale.com> - * some code copied from files with the following: - * Copyright (C) 2004-2007 David McCullough <david_mccullough@mcafee.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. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * 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. - * - * --------------------------------------------------------------------------- - * - * NOTES: - * - * The Freescale SEC (also known as 'talitos') resides on the - * internal bus, and runs asynchronous to the processor core. It has - * a wide gamut of cryptographic acceleration features, including single- - * pass IPsec (also known as algorithm chaining). To properly utilize - * all of the SEC's performance enhancing features, further reworking - * of higher level code (framework, applications) will be necessary. - * - * The following table shows which SEC version is present in which devices: - * - * Devices SEC version - * - * 8272, 8248 SEC 1.0 - * 885, 875 SEC 1.2 - * 8555E, 8541E SEC 2.0 - * 8349E SEC 2.01 - * 8548E SEC 2.1 - * - * The following table shows the features offered by each SEC version: - * - * Max. chan- - * version Bus I/F Clock nels DEU AESU AFEU MDEU PKEU RNG KEU - * - * SEC 1.0 internal 64b 100MHz 4 1 1 1 1 1 1 0 - * SEC 1.2 internal 32b 66MHz 1 1 1 0 1 0 0 0 - * SEC 2.0 internal 64b 166MHz 4 1 1 1 1 1 1 0 - * SEC 2.01 internal 64b 166MHz 4 1 1 1 1 1 1 0 - * SEC 2.1 internal 64b 333MHz 4 1 1 1 1 1 1 1 - * - * Each execution unit in the SEC has two modes of execution; channel and - * slave/debug. This driver employs the channel infrastructure in the - * device for convenience. Only the RNG is directly accessed due to the - * convenience of its random fifo pool. The relationship between the - * channels and execution units is depicted in the following diagram: - * - * ------- ------------ - * ---| ch0 |---| | - * ------- | | - * | |------+-------+-------+-------+------------ - * ------- | | | | | | | - * ---| ch1 |---| | | | | | | - * ------- | | ------ ------ ------ ------ ------ - * |controller| |DEU | |AESU| |MDEU| |PKEU| ... |RNG | - * ------- | | ------ ------ ------ ------ ------ - * ---| ch2 |---| | | | | | | - * ------- | | | | | | | - * | |------+-------+-------+-------+------------ - * ------- | | - * ---| ch3 |---| | - * ------- ------------ - * - * Channel ch0 may drive an aes operation to the aes unit (AESU), - * and, at the same time, ch1 may drive a message digest operation - * to the mdeu. Each channel has an input descriptor FIFO, and the - * FIFO can contain, e.g. on the 8541E, up to 24 entries, before a - * a buffer overrun error is triggered. The controller is responsible - * for fetching the data from descriptor pointers, and passing the - * data to the appropriate EUs. The controller also writes the - * cryptographic operation's result to memory. The SEC notifies - * completion by triggering an interrupt and/or setting the 1st byte - * of the hdr field to 0xff. - * - * TODO: - * o support more algorithms - * o support more versions of the SEC - * o add support for linux 2.4 - * o scatter-gather (sg) support - * o add support for public key ops (PKEU) - * o add statistics - */ - -#include <linux/version.h> -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) && !defined(AUTOCONF_INCLUDED) -#include <linux/config.h> -#endif -#include <linux/module.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#include <linux/random.h> -#include <linux/skbuff.h> -#include <asm/scatterlist.h> -#include <linux/dma-mapping.h> /* dma_map_single() */ -#include <linux/moduleparam.h> - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15) -#include <linux/platform_device.h> -#endif - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19) -#include <linux/of_platform.h> -#endif - -#include <cryptodev.h> -#include <uio.h> - -#define DRV_NAME "talitos" - -#include "talitos_dev.h" -#include "talitos_soft.h" - -#define read_random(p,l) get_random_bytes(p,l) - -const char talitos_driver_name[] = "Talitos OCF"; -const char talitos_driver_version[] = "0.2"; - -static int talitos_newsession(device_t dev, u_int32_t *sidp, - struct cryptoini *cri); -static int talitos_freesession(device_t dev, u_int64_t tid); -static int talitos_process(device_t dev, struct cryptop *crp, int hint); -static void dump_talitos_status(struct talitos_softc *sc); -static int talitos_submit(struct talitos_softc *sc, struct talitos_desc *td, - int chsel); -static void talitos_doneprocessing(struct talitos_softc *sc); -static void talitos_init_device(struct talitos_softc *sc); -static void talitos_reset_device_master(struct talitos_softc *sc); -static void talitos_reset_device(struct talitos_softc *sc); -static void talitos_errorprocessing(struct talitos_softc *sc); -#ifdef CONFIG_PPC_MERGE -static int talitos_probe(struct of_device *ofdev, const struct of_device_id *match); -static int talitos_remove(struct of_device *ofdev); -#else -static int talitos_probe(struct platform_device *pdev); -static int talitos_remove(struct platform_device *pdev); -#endif -#ifdef CONFIG_OCF_RANDOMHARVEST -static int talitos_read_random(void *arg, u_int32_t *buf, int maxwords); -static void talitos_rng_init(struct talitos_softc *sc); -#endif - -static device_method_t talitos_methods = { - /* crypto device methods */ - DEVMETHOD(cryptodev_newsession, talitos_newsession), - DEVMETHOD(cryptodev_freesession,talitos_freesession), - DEVMETHOD(cryptodev_process, talitos_process), -}; - -#define debug talitos_debug -int talitos_debug = 0; -module_param(talitos_debug, int, 0644); -MODULE_PARM_DESC(talitos_debug, "Enable debug"); - -static inline void talitos_write(volatile unsigned *addr, u32 val) -{ - out_be32(addr, val); -} - -static inline u32 talitos_read(volatile unsigned *addr) -{ - u32 val; - val = in_be32(addr); - return val; -} - -static void dump_talitos_status(struct talitos_softc *sc) -{ - unsigned int v, v_hi, i, *ptr; - v = talitos_read(sc->sc_base_addr + TALITOS_MCR); - v_hi = talitos_read(sc->sc_base_addr + TALITOS_MCR_HI); - printk(KERN_INFO "%s: MCR 0x%08x_%08x\n", - device_get_nameunit(sc->sc_cdev), v, v_hi); - v = talitos_read(sc->sc_base_addr + TALITOS_IMR); - v_hi = talitos_read(sc->sc_base_addr + TALITOS_IMR_HI); - printk(KERN_INFO "%s: IMR 0x%08x_%08x\n", - device_get_nameunit(sc->sc_cdev), v, v_hi); - v = talitos_read(sc->sc_base_addr + TALITOS_ISR); - v_hi = talitos_read(sc->sc_base_addr + TALITOS_ISR_HI); - printk(KERN_INFO "%s: ISR 0x%08x_%08x\n", - device_get_nameunit(sc->sc_cdev), v, v_hi); - for (i = 0; i < sc->sc_num_channels; i++) { - v = talitos_read(sc->sc_base_addr + i*TALITOS_CH_OFFSET + - TALITOS_CH_CDPR); - v_hi = talitos_read(sc->sc_base_addr + i*TALITOS_CH_OFFSET + - TALITOS_CH_CDPR_HI); - printk(KERN_INFO "%s: CDPR ch%d 0x%08x_%08x\n", - device_get_nameunit(sc->sc_cdev), i, v, v_hi); - } - for (i = 0; i < sc->sc_num_channels; i++) { - v = talitos_read(sc->sc_base_addr + i*TALITOS_CH_OFFSET + - TALITOS_CH_CCPSR); - v_hi = talitos_read(sc->sc_base_addr + i*TALITOS_CH_OFFSET + - TALITOS_CH_CCPSR_HI); - printk(KERN_INFO "%s: CCPSR ch%d 0x%08x_%08x\n", - device_get_nameunit(sc->sc_cdev), i, v, v_hi); - } - ptr = sc->sc_base_addr + TALITOS_CH_DESCBUF; - for (i = 0; i < 16; i++) { - v = talitos_read(ptr++); v_hi = talitos_read(ptr++); - printk(KERN_INFO "%s: DESCBUF ch0 0x%08x_%08x (tdp%02d)\n", - device_get_nameunit(sc->sc_cdev), v, v_hi, i); - } - return; -} - - -#ifdef CONFIG_OCF_RANDOMHARVEST -/* - * pull random numbers off the RNG FIFO, not exceeding amount available - */ -static int -talitos_read_random(void *arg, u_int32_t *buf, int maxwords) -{ - struct talitos_softc *sc = (struct talitos_softc *) arg; - int rc; - u_int32_t v; - - DPRINTF("%s()\n", __FUNCTION__); - - /* check for things like FIFO underflow */ - v = talitos_read(sc->sc_base_addr + TALITOS_RNGISR_HI); - if (unlikely(v)) { - printk(KERN_ERR "%s: RNGISR_HI error %08x\n", - device_get_nameunit(sc->sc_cdev), v); - return 0; - } - /* - * OFL is number of available 64-bit words, - * shift and convert to a 32-bit word count - */ - v = talitos_read(sc->sc_base_addr + TALITOS_RNGSR_HI); - v = (v & TALITOS_RNGSR_HI_OFL) >> (16 - 1); - if (maxwords > v) - maxwords = v; - for (rc = 0; rc < maxwords; rc++) { - buf[rc] = talitos_read(sc->sc_base_addr + - TALITOS_RNG_FIFO + rc*sizeof(u_int32_t)); - } - if (maxwords & 1) { - /* - * RNG will complain with an AE in the RNGISR - * if we don't complete the pairs of 32-bit reads - * to its 64-bit register based FIFO - */ - v = talitos_read(sc->sc_base_addr + - TALITOS_RNG_FIFO + rc*sizeof(u_int32_t)); - } - - return rc; -} - -static void -talitos_rng_init(struct talitos_softc *sc) -{ - u_int32_t v; - - DPRINTF("%s()\n", __FUNCTION__); - /* reset RNG EU */ - v = talitos_read(sc->sc_base_addr + TALITOS_RNGRCR_HI); - v |= TALITOS_RNGRCR_HI_SR; - talitos_write(sc->sc_base_addr + TALITOS_RNGRCR_HI, v); - while ((talitos_read(sc->sc_base_addr + TALITOS_RNGSR_HI) - & TALITOS_RNGSR_HI_RD) == 0) - cpu_relax(); - /* - * we tell the RNG to start filling the RNG FIFO - * by writing the RNGDSR - */ - v = talitos_read(sc->sc_base_addr + TALITOS_RNGDSR_HI); - talitos_write(sc->sc_base_addr + TALITOS_RNGDSR_HI, v); - /* - * 64 bits of data will be pushed onto the FIFO every - * 256 SEC cycles until the FIFO is full. The RNG then - * attempts to keep the FIFO full. - */ - v = talitos_read(sc->sc_base_addr + TALITOS_RNGISR_HI); - if (v) { - printk(KERN_ERR "%s: RNGISR_HI error %08x\n", - device_get_nameunit(sc->sc_cdev), v); - return; - } - /* - * n.b. we need to add a FIPS test here - if the RNG is going - * to fail, it's going to fail at reset time - */ - return; -} -#endif /* CONFIG_OCF_RANDOMHARVEST */ - -/* - * Generate a new software session. - */ -static int -talitos_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri) -{ - struct cryptoini *c, *encini = NULL, *macini = NULL; - struct talitos_softc *sc = device_get_softc(dev); - struct talitos_session *ses = NULL; - int sesn; - - 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 (c->cri_alg == CRYPTO_MD5 || - c->cri_alg == CRYPTO_MD5_HMAC || - c->cri_alg == CRYPTO_SHA1 || - c->cri_alg == CRYPTO_SHA1_HMAC || - c->cri_alg == CRYPTO_NULL_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 || - c->cri_alg == CRYPTO_NULL_CBC) { - if (encini) - return EINVAL; - encini = c; - } else { - DPRINTF("UNKNOWN c->cri_alg %d\n", encini->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; - break; - case CRYPTO_3DES_CBC: - if (encini->cri_klen != 192) { - return EINVAL; - } - break; - case CRYPTO_AES_CBC: - if (encini->cri_klen != 128 && - encini->cri_klen != 192 && - encini->cri_klen != 256) - return EINVAL; - break; - default: - DPRINTF("UNKNOWN encini->cri_alg %d\n", - encini->cri_alg); - return EINVAL; - } - } - - if (sc->sc_sessions == NULL) { - ses = sc->sc_sessions = (struct talitos_session *) - kmalloc(sizeof(struct talitos_session), SLAB_ATOMIC); - if (ses == NULL) - return ENOMEM; - memset(ses, 0, sizeof(struct talitos_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) { - /* allocating session */ - sesn = sc->sc_nsessions; - ses = (struct talitos_session *) kmalloc( - (sesn + 1) * sizeof(struct talitos_session), - SLAB_ATOMIC); - if (ses == NULL) - return ENOMEM; - memset(ses, 0, - (sesn + 1) * sizeof(struct talitos_session)); - memcpy(ses, sc->sc_sessions, - sesn * sizeof(struct talitos_session)); - memset(sc->sc_sessions, 0, - sesn * sizeof(struct talitos_session)); - kfree(sc->sc_sessions); - sc->sc_sessions = ses; - ses = &sc->sc_sessions[sesn]; - sc->sc_nsessions++; - } - } - - ses->ses_used = 1; - - if (encini) { - ses->ses_klen = (encini->cri_klen + 7) / 8; - memcpy(ses->ses_key, encini->cri_key, ses->ses_klen); - if (macini) { - /* doing hash on top of cipher */ - ses->ses_hmac_len = (macini->cri_klen + 7) / 8; - memcpy(ses->ses_hmac, macini->cri_key, - ses->ses_hmac_len); - } - } else if (macini) { - /* doing hash */ - ses->ses_klen = (macini->cri_klen + 7) / 8; - memcpy(ses->ses_key, macini->cri_key, ses->ses_klen); - } - - /* back compat way of determining MSC result len */ - if (macini) { - ses->ses_mlen = macini->cri_mlen; - if (ses->ses_mlen == 0) { - if (macini->cri_alg == CRYPTO_MD5_HMAC) - ses->ses_mlen = MD5_HASH_LEN; - else - ses->ses_mlen = SHA1_HASH_LEN; - } - } - - /* really should make up a template td here, - * and only fill things like i/o and direction in process() */ - - /* assign session ID */ - *sidp = TALITOS_SID(sc->sc_num, sesn); - return 0; -} - -/* - * Deallocate a session. - */ -static int -talitos_freesession(device_t dev, u_int64_t tid) -{ - struct talitos_softc *sc = device_get_softc(dev); - int session, ret; - u_int32_t sid = ((u_int32_t) tid) & 0xffffffff; - - if (sc == NULL) - return EINVAL; - session = TALITOS_SESSION(sid); - if (session < sc->sc_nsessions) { - memset(&sc->sc_sessions[session], 0, - sizeof(sc->sc_sessions[session])); - ret = 0; - } else - ret = EINVAL; - return ret; -} - -/* - * launch device processing - it will come back with done notification - * in the form of an interrupt and/or HDR_DONE_BITS in header - */ -static int -talitos_submit( - struct talitos_softc *sc, - struct talitos_desc *td, - int chsel) -{ - u_int32_t v; - - v = dma_map_single(NULL, td, sizeof(*td), DMA_TO_DEVICE); - talitos_write(sc->sc_base_addr + - chsel*TALITOS_CH_OFFSET + TALITOS_CH_FF, 0); - talitos_write(sc->sc_base_addr + - chsel*TALITOS_CH_OFFSET + TALITOS_CH_FF_HI, v); - return 0; -} - -static int -talitos_process(device_t dev, struct cryptop *crp, int hint) -{ - int i, err = 0, ivsize; - struct talitos_softc *sc = device_get_softc(dev); - struct cryptodesc *crd1, *crd2, *maccrd, *enccrd; - caddr_t iv; - struct talitos_session *ses; - struct talitos_desc *td; - unsigned long flags; - /* descriptor mappings */ - int hmac_key, hmac_data, cipher_iv, cipher_key, - in_fifo, out_fifo, cipher_iv_out; - static int chsel = -1; - u_int32_t rand_iv[4]; - - DPRINTF("%s()\n", __FUNCTION__); - - if (crp == NULL || crp->crp_callback == NULL || sc == NULL) { - return EINVAL; - } - crp->crp_etype = 0; - if (TALITOS_SESSION(crp->crp_sid) >= sc->sc_nsessions) { - return EINVAL; - } - - ses = &sc->sc_sessions[TALITOS_SESSION(crp->crp_sid)]; - - /* enter the channel scheduler */ - spin_lock_irqsave(&sc->sc_chnfifolock[sc->sc_num_channels], flags); - - /* reuse channel that already had/has requests for the required EU */ - for (i = 0; i < sc->sc_num_channels; i++) { - if (sc->sc_chnlastalg[i] == crp->crp_desc->crd_alg) - break; - } - if (i == sc->sc_num_channels) { - /* - * haven't seen this algo the last sc_num_channels or more - * use round robin in this case - * nb: sc->sc_num_channels must be power of 2 - */ - chsel = (chsel + 1) & (sc->sc_num_channels - 1); - } else { - /* - * matches channel with same target execution unit; - * use same channel in this case - */ - chsel = i; - } - sc->sc_chnlastalg[chsel] = crp->crp_desc->crd_alg; - - /* release the channel scheduler lock */ - spin_unlock_irqrestore(&sc->sc_chnfifolock[sc->sc_num_channels], flags); - - /* acquire the selected channel fifo lock */ - spin_lock_irqsave(&sc->sc_chnfifolock[chsel], flags); - - /* find and reserve next available descriptor-cryptop pair */ - for (i = 0; i < sc->sc_chfifo_len; i++) { - if (sc->sc_chnfifo[chsel][i].cf_desc.hdr == 0) { - /* - * ensure correct descriptor formation by - * avoiding inadvertently setting "optional" entries - * e.g. not using "optional" dptr2 for MD/HMAC descs - */ - memset(&sc->sc_chnfifo[chsel][i].cf_desc, - 0, sizeof(*td)); - /* reserve it with done notification request bit */ - sc->sc_chnfifo[chsel][i].cf_desc.hdr |= - TALITOS_DONE_NOTIFY; - break; - } - } - spin_unlock_irqrestore(&sc->sc_chnfifolock[chsel], flags); - - if (i == sc->sc_chfifo_len) { - /* fifo full */ - err = ERESTART; - goto errout; - } - - td = &sc->sc_chnfifo[chsel][i].cf_desc; - sc->sc_chnfifo[chsel][i].cf_crp = crp; - - crd1 = crp->crp_desc; - if (crd1 == NULL) { - err = EINVAL; - goto errout; - } - crd2 = crd1->crd_next; - /* prevent compiler warning */ - hmac_key = 0; - hmac_data = 0; - if (crd2 == NULL) { - td->hdr |= TD_TYPE_COMMON_NONSNOOP_NO_AFEU; - /* assign descriptor dword ptr mappings for this desc. type */ - cipher_iv = 1; - cipher_key = 2; - in_fifo = 3; - cipher_iv_out = 5; - if (crd1->crd_alg == CRYPTO_MD5_HMAC || - crd1->crd_alg == CRYPTO_SHA1_HMAC || - crd1->crd_alg == CRYPTO_SHA1 || - crd1->crd_alg == CRYPTO_MD5) { - out_fifo = 5; - maccrd = crd1; - enccrd = NULL; - } else if (crd1->crd_alg == CRYPTO_DES_CBC || - crd1->crd_alg == CRYPTO_3DES_CBC || - crd1->crd_alg == CRYPTO_AES_CBC || - crd1->crd_alg == CRYPTO_ARC4) { - out_fifo = 4; - maccrd = NULL; - enccrd = crd1; - } else { - DPRINTF("UNKNOWN crd1->crd_alg %d\n", crd1->crd_alg); - err = EINVAL; - goto errout; - } - } else { - if (sc->sc_desc_types & TALITOS_HAS_DT_IPSEC_ESP) { - td->hdr |= TD_TYPE_IPSEC_ESP; - } else { - DPRINTF("unimplemented: multiple descriptor ipsec\n"); - err = EINVAL; - goto errout; - } - /* assign descriptor dword ptr mappings for this desc. type */ - hmac_key = 0; - hmac_data = 1; - cipher_iv = 2; - cipher_key = 3; - in_fifo = 4; - out_fifo = 5; - cipher_iv_out = 6; - if ((crd1->crd_alg == CRYPTO_MD5_HMAC || - crd1->crd_alg == CRYPTO_SHA1_HMAC || - crd1->crd_alg == CRYPTO_MD5 || - crd1->crd_alg == CRYPTO_SHA1) && - (crd2->crd_alg == CRYPTO_DES_CBC || - crd2->crd_alg == CRYPTO_3DES_CBC || - crd2->crd_alg == CRYPTO_AES_CBC || - crd2->crd_alg == CRYPTO_ARC4) && - ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) { - maccrd = crd1; - enccrd = crd2; - } else if ((crd1->crd_alg == CRYPTO_DES_CBC || - crd1->crd_alg == CRYPTO_ARC4 || - crd1->crd_alg == CRYPTO_3DES_CBC || - crd1->crd_alg == CRYPTO_AES_CBC) && - (crd2->crd_alg == CRYPTO_MD5_HMAC || - crd2->crd_alg == CRYPTO_SHA1_HMAC || - crd2->crd_alg == CRYPTO_MD5 || - crd2->crd_alg == CRYPTO_SHA1) && - (crd1->crd_flags & CRD_F_ENCRYPT)) { - enccrd = crd1; - maccrd = crd2; - } else { - /* We cannot order the SEC as requested */ - printk("%s: cannot do the order\n", - device_get_nameunit(sc->sc_cdev)); - err = EINVAL; - goto errout; - } - } - /* assign in_fifo and out_fifo based on input/output struct type */ - if (crp->crp_flags & CRYPTO_F_SKBUF) { - /* using SKB buffers */ - struct sk_buff *skb = (struct sk_buff *)crp->crp_buf; - if (skb_shinfo(skb)->nr_frags) { - printk("%s: skb frags unimplemented\n", - device_get_nameunit(sc->sc_cdev)); - err = EINVAL; - goto errout; - } - td->ptr[in_fifo].ptr = dma_map_single(NULL, skb->data, - skb->len, DMA_TO_DEVICE); - td->ptr[in_fifo].len = skb->len; - td->ptr[out_fifo].ptr = dma_map_single(NULL, skb->data, - skb->len, DMA_TO_DEVICE); - td->ptr[out_fifo].len = skb->len; - td->ptr[hmac_data].ptr = dma_map_single(NULL, skb->data, - skb->len, DMA_TO_DEVICE); - } else if (crp->crp_flags & CRYPTO_F_IOV) { - /* using IOV buffers */ - struct uio *uiop = (struct uio *)crp->crp_buf; - if (uiop->uio_iovcnt > 1) { - printk("%s: iov frags unimplemented\n", - device_get_nameunit(sc->sc_cdev)); - err = EINVAL; - goto errout; - } - td->ptr[in_fifo].ptr = dma_map_single(NULL, - uiop->uio_iov->iov_base, crp->crp_ilen, DMA_TO_DEVICE); - td->ptr[in_fifo].len = crp->crp_ilen; - /* crp_olen is never set; always use crp_ilen */ - td->ptr[out_fifo].ptr = dma_map_single(NULL, - uiop->uio_iov->iov_base, - crp->crp_ilen, DMA_TO_DEVICE); - td->ptr[out_fifo].len = crp->crp_ilen; - } else { - /* using contig buffers */ - td->ptr[in_fifo].ptr = dma_map_single(NULL, - crp->crp_buf, crp->crp_ilen, DMA_TO_DEVICE); - td->ptr[in_fifo].len = crp->crp_ilen; - td->ptr[out_fifo].ptr = dma_map_single(NULL, - crp->crp_buf, crp->crp_ilen, DMA_TO_DEVICE); - td->ptr[out_fifo].len = crp->crp_ilen; - } - if (enccrd) { - switch (enccrd->crd_alg) { - case CRYPTO_3DES_CBC: - td->hdr |= TALITOS_MODE0_DEU_3DES; - /* FALLTHROUGH */ - case CRYPTO_DES_CBC: - td->hdr |= TALITOS_SEL0_DEU - | TALITOS_MODE0_DEU_CBC; - if (enccrd->crd_flags & CRD_F_ENCRYPT) - td->hdr |= TALITOS_MODE0_DEU_ENC; - ivsize = 2*sizeof(u_int32_t); - DPRINTF("%cDES ses %d ch %d len %d\n", - (td->hdr & TALITOS_MODE0_DEU_3DES)?'3':'1', - (u32)TALITOS_SESSION(crp->crp_sid), - chsel, td->ptr[in_fifo].len); - break; - case CRYPTO_AES_CBC: - td->hdr |= TALITOS_SEL0_AESU - | TALITOS_MODE0_AESU_CBC; - if (enccrd->crd_flags & CRD_F_ENCRYPT) - td->hdr |= TALITOS_MODE0_AESU_ENC; - ivsize = 4*sizeof(u_int32_t); - DPRINTF("AES ses %d ch %d len %d\n", - (u32)TALITOS_SESSION(crp->crp_sid), - chsel, td->ptr[in_fifo].len); - break; - default: - printk("%s: unimplemented enccrd->crd_alg %d\n", - device_get_nameunit(sc->sc_cdev), enccrd->crd_alg); - err = EINVAL; - goto errout; - } - /* - * Setup encrypt/decrypt state. When using basic ops - * we can't use an inline IV because hash/crypt offset - * must be from the end of the IV to the start of the - * crypt data and this leaves out the preceding header - * from the hash calculation. Instead we place the IV - * in the state record and set the hash/crypt offset to - * copy both the header+IV. - */ - if (enccrd->crd_flags & CRD_F_ENCRYPT) { - td->hdr |= TALITOS_DIR_OUTBOUND; - if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) - iv = enccrd->crd_iv; - else - read_random((iv = (caddr_t) rand_iv), sizeof(rand_iv)); - if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) { - crypto_copyback(crp->crp_flags, crp->crp_buf, - enccrd->crd_inject, ivsize, iv); - } - } else { - td->hdr |= TALITOS_DIR_INBOUND; - if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) { - iv = enccrd->crd_iv; - } else { - iv = (caddr_t) rand_iv; - crypto_copydata(crp->crp_flags, crp->crp_buf, - enccrd->crd_inject, ivsize, iv); - } - } - td->ptr[cipher_iv].ptr = dma_map_single(NULL, iv, ivsize, - DMA_TO_DEVICE); - td->ptr[cipher_iv].len = ivsize; - /* - * we don't need the cipher iv out length/pointer - * field to do ESP IPsec. Therefore we set the len field as 0, - * which tells the SEC not to do anything with this len/ptr - * field. Previously, when length/pointer as pointing to iv, - * it gave us corruption of packets. - */ - td->ptr[cipher_iv_out].len = 0; - } - if (enccrd && maccrd) { - /* this is ipsec only for now */ - td->hdr |= TALITOS_SEL1_MDEU - | TALITOS_MODE1_MDEU_INIT - | TALITOS_MODE1_MDEU_PAD; - switch (maccrd->crd_alg) { - case CRYPTO_MD5: - td->hdr |= TALITOS_MODE1_MDEU_MD5; - break; - case CRYPTO_MD5_HMAC: - td->hdr |= TALITOS_MODE1_MDEU_MD5_HMAC; - break; - case CRYPTO_SHA1: - td->hdr |= TALITOS_MODE1_MDEU_SHA1; - break; - case CRYPTO_SHA1_HMAC: - td->hdr |= TALITOS_MODE1_MDEU_SHA1_HMAC; - break; - default: - /* We cannot order the SEC as requested */ - printk("%s: cannot do the order\n", - device_get_nameunit(sc->sc_cdev)); - err = EINVAL; - goto errout; - } - if ((maccrd->crd_alg == CRYPTO_MD5_HMAC) || - (maccrd->crd_alg == CRYPTO_SHA1_HMAC)) { - /* - * The offset from hash data to the start of - * crypt data is the difference in the skips. - */ - /* ipsec only for now */ - td->ptr[hmac_key].ptr = dma_map_single(NULL, - ses->ses_hmac, ses->ses_hmac_len, DMA_TO_DEVICE); - td->ptr[hmac_key].len = ses->ses_hmac_len; - td->ptr[in_fifo].ptr += enccrd->crd_skip; - td->ptr[in_fifo].len = enccrd->crd_len; - td->ptr[out_fifo].ptr += enccrd->crd_skip; - td->ptr[out_fifo].len = enccrd->crd_len; - /* bytes of HMAC to postpend to ciphertext */ - td->ptr[out_fifo].extent = ses->ses_mlen; - td->ptr[hmac_data].ptr += maccrd->crd_skip; - td->ptr[hmac_data].len = enccrd->crd_skip - maccrd->crd_skip; - } - if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT) { - printk("%s: CRD_F_KEY_EXPLICIT unimplemented\n", - device_get_nameunit(sc->sc_cdev)); - } - } - if (!enccrd && maccrd) { - /* single MD5 or SHA */ - td->hdr |= TALITOS_SEL0_MDEU - | TALITOS_MODE0_MDEU_INIT - | TALITOS_MODE0_MDEU_PAD; - switch (maccrd->crd_alg) { - case CRYPTO_MD5: - td->hdr |= TALITOS_MODE0_MDEU_MD5; - DPRINTF("MD5 ses %d ch %d len %d\n", - (u32)TALITOS_SESSION(crp->crp_sid), - chsel, td->ptr[in_fifo].len); - break; - case CRYPTO_MD5_HMAC: - td->hdr |= TALITOS_MODE0_MDEU_MD5_HMAC; - break; - case CRYPTO_SHA1: - td->hdr |= TALITOS_MODE0_MDEU_SHA1; - DPRINTF("SHA1 ses %d ch %d len %d\n", - (u32)TALITOS_SESSION(crp->crp_sid), - chsel, td->ptr[in_fifo].len); - break; - case CRYPTO_SHA1_HMAC: - td->hdr |= TALITOS_MODE0_MDEU_SHA1_HMAC; - break; - default: - /* We cannot order the SEC as requested */ - DPRINTF("cannot do the order\n"); - err = EINVAL; - goto errout; - } - - if (crp->crp_flags & CRYPTO_F_IOV) - td->ptr[out_fifo].ptr += maccrd->crd_inject; - - if ((maccrd->crd_alg == CRYPTO_MD5_HMAC) || - (maccrd->crd_alg == CRYPTO_SHA1_HMAC)) { - td->ptr[hmac_key].ptr = dma_map_single(NULL, - ses->ses_hmac, ses->ses_hmac_len, - DMA_TO_DEVICE); - td->ptr[hmac_key].len = ses->ses_hmac_len; - } - } - else { - /* using process key (session data has duplicate) */ - td->ptr[cipher_key].ptr = dma_map_single(NULL, - enccrd->crd_key, (enccrd->crd_klen + 7) / 8, - DMA_TO_DEVICE); - td->ptr[cipher_key].len = (enccrd->crd_klen + 7) / 8; - } - /* descriptor complete - GO! */ - return talitos_submit(sc, td, chsel); - -errout: - if (err != ERESTART) { - crp->crp_etype = err; - crypto_done(crp); - } - return err; -} - -/* go through all channels descriptors, notifying OCF what has - * _and_hasn't_ successfully completed and reset the device - * (otherwise it's up to decoding desc hdrs!) - */ -static void talitos_errorprocessing(struct talitos_softc *sc) -{ - unsigned long flags; - int i, j; - - /* disable further scheduling until under control */ - spin_lock_irqsave(&sc->sc_chnfifolock[sc->sc_num_channels], flags); - - if (debug) dump_talitos_status(sc); - /* go through descriptors, try and salvage those successfully done, - * and EIO those that weren't - */ - for (i = 0; i < sc->sc_num_channels; i++) { - spin_lock_irqsave(&sc->sc_chnfifolock[i], flags); - for (j = 0; j < sc->sc_chfifo_len; j++) { - if (sc->sc_chnfifo[i][j].cf_desc.hdr) { - if ((sc->sc_chnfifo[i][j].cf_desc.hdr - & TALITOS_HDR_DONE_BITS) - != TALITOS_HDR_DONE_BITS) { - /* this one didn't finish */ - /* signify in crp->etype */ - sc->sc_chnfifo[i][j].cf_crp->crp_etype - = EIO; - } - } else - continue; /* free entry */ - /* either way, notify ocf */ - crypto_done(sc->sc_chnfifo[i][j].cf_crp); - /* and tag it available again - * - * memset to ensure correct descriptor formation by - * avoiding inadvertently setting "optional" entries - * e.g. not using "optional" dptr2 MD/HMAC processing - */ - memset(&sc->sc_chnfifo[i][j].cf_desc, - 0, sizeof(struct talitos_desc)); - } - spin_unlock_irqrestore(&sc->sc_chnfifolock[i], flags); - } - /* reset and initialize the SEC h/w device */ - talitos_reset_device(sc); - talitos_init_device(sc); -#ifdef CONFIG_OCF_RANDOMHARVEST - if (sc->sc_exec_units & TALITOS_HAS_EU_RNG) - talitos_rng_init(sc); -#endif - - /* Okay. Stand by. */ - spin_unlock_irqrestore(&sc->sc_chnfifolock[sc->sc_num_channels], flags); - - return; -} - -/* go through all channels descriptors, notifying OCF what's been done */ -static void talitos_doneprocessing(struct talitos_softc *sc) -{ - unsigned long flags; - int i, j; - - /* go through descriptors looking for done bits */ - for (i = 0; i < sc->sc_num_channels; i++) { - spin_lock_irqsave(&sc->sc_chnfifolock[i], flags); - for (j = 0; j < sc->sc_chfifo_len; j++) { - /* descriptor has done bits set? */ - if ((sc->sc_chnfifo[i][j].cf_desc.hdr - & TALITOS_HDR_DONE_BITS) - == TALITOS_HDR_DONE_BITS) { - /* notify ocf */ - crypto_done(sc->sc_chnfifo[i][j].cf_crp); - /* and tag it available again - * - * memset to ensure correct descriptor formation by - * avoiding inadvertently setting "optional" entries - * e.g. not using "optional" dptr2 MD/HMAC processing - */ - memset(&sc->sc_chnfifo[i][j].cf_desc, - 0, sizeof(struct talitos_desc)); - } - } - spin_unlock_irqrestore(&sc->sc_chnfifolock[i], flags); - } - return; -} - -static irqreturn_t -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19) -talitos_intr(int irq, void *arg) -#else -talitos_intr(int irq, void *arg, struct pt_regs *regs) -#endif -{ - struct talitos_softc *sc = arg; - u_int32_t v, v_hi; - - /* ack */ - v = talitos_read(sc->sc_base_addr + TALITOS_ISR); - v_hi = talitos_read(sc->sc_base_addr + TALITOS_ISR_HI); - talitos_write(sc->sc_base_addr + TALITOS_ICR, v); - talitos_write(sc->sc_base_addr + TALITOS_ICR_HI, v_hi); - - if (unlikely(v & TALITOS_ISR_ERROR)) { - /* Okay, Houston, we've had a problem here. */ - printk(KERN_DEBUG "%s: got error interrupt - ISR 0x%08x_%08x\n", - device_get_nameunit(sc->sc_cdev), v, v_hi); - talitos_errorprocessing(sc); - } else - if (likely(v & TALITOS_ISR_DONE)) { - talitos_doneprocessing(sc); - } - return IRQ_HANDLED; -} - -/* - * Initialize registers we need to touch only once. - */ -static void -talitos_init_device(struct talitos_softc *sc) -{ - u_int32_t v; - int i; - - DPRINTF("%s()\n", __FUNCTION__); - - /* init all channels */ - for (i = 0; i < sc->sc_num_channels; i++) { - v = talitos_read(sc->sc_base_addr + - i*TALITOS_CH_OFFSET + TALITOS_CH_CCCR_HI); - v |= TALITOS_CH_CCCR_HI_CDWE - | TALITOS_CH_CCCR_HI_CDIE; /* invoke interrupt if done */ - talitos_write(sc->sc_base_addr + - i*TALITOS_CH_OFFSET + TALITOS_CH_CCCR_HI, v); - } - /* enable all interrupts */ - v = talitos_read(sc->sc_base_addr + TALITOS_IMR); - v |= TALITOS_IMR_ALL; - talitos_write(sc->sc_base_addr + TALITOS_IMR, v); - v = talitos_read(sc->sc_base_addr + TALITOS_IMR_HI); - v |= TALITOS_IMR_HI_ERRONLY; - talitos_write(sc->sc_base_addr + TALITOS_IMR_HI, v); - return; -} - -/* - * set the master reset bit on the device. - */ -static void -talitos_reset_device_master(struct talitos_softc *sc) -{ - u_int32_t v; - - /* Reset the device by writing 1 to MCR:SWR and waiting 'til cleared */ - v = talitos_read(sc->sc_base_addr + TALITOS_MCR); - talitos_write(sc->sc_base_addr + TALITOS_MCR, v | TALITOS_MCR_SWR); - - while (talitos_read(sc->sc_base_addr + TALITOS_MCR) & TALITOS_MCR_SWR) - cpu_relax(); - - return; -} - -/* - * Resets the device. Values in the registers are left as is - * from the reset (i.e. initial values are assigned elsewhere). - */ -static void -talitos_reset_device(struct talitos_softc *sc) -{ - u_int32_t v; - int i; - - DPRINTF("%s()\n", __FUNCTION__); - - /* - * Master reset - * errata documentation: warning: certain SEC interrupts - * are not fully cleared by writing the MCR:SWR bit, - * set bit twice to completely reset - */ - talitos_reset_device_master(sc); /* once */ - talitos_reset_device_master(sc); /* and once again */ - - /* reset all channels */ - for (i = 0; i < sc->sc_num_channels; i++) { - v = talitos_read(sc->sc_base_addr + i*TALITOS_CH_OFFSET + - TALITOS_CH_CCCR); - talitos_write(sc->sc_base_addr + i*TALITOS_CH_OFFSET + - TALITOS_CH_CCCR, v | TALITOS_CH_CCCR_RESET); - } -} - -/* Set up the crypto device structure, private data, - * and anything else we need before we start */ -#ifdef CONFIG_PPC_MERGE -static int talitos_probe(struct of_device *ofdev, const struct of_device_id *match) -#else -static int talitos_probe(struct platform_device *pdev) -#endif -{ - struct talitos_softc *sc = NULL; - struct resource *r; -#ifdef CONFIG_PPC_MERGE - struct device *device = &ofdev->dev; - struct device_node *np = ofdev->node; - const unsigned int *prop; - int err; - struct resource res; -#endif - static int num_chips = 0; - int rc; - int i; - - DPRINTF("%s()\n", __FUNCTION__); - - sc = (struct talitos_softc *) kmalloc(sizeof(*sc), GFP_KERNEL); - if (!sc) - return -ENOMEM; - memset(sc, 0, sizeof(*sc)); - - softc_device_init(sc, DRV_NAME, num_chips, talitos_methods); - - sc->sc_irq = -1; - sc->sc_cid = -1; -#ifndef CONFIG_PPC_MERGE - sc->sc_dev = pdev; -#endif - sc->sc_num = num_chips++; - -#ifdef CONFIG_PPC_MERGE - dev_set_drvdata(device, sc); -#else - platform_set_drvdata(sc->sc_dev, sc); -#endif - - /* get the irq line */ -#ifdef CONFIG_PPC_MERGE - err = of_address_to_resource(np, 0, &res); - if (err) - return -EINVAL; - r = &res; - - sc->sc_irq = irq_of_parse_and_map(np, 0); -#else - /* get a pointer to the register memory */ - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - sc->sc_irq = platform_get_irq(pdev, 0); -#endif - rc = request_irq(sc->sc_irq, talitos_intr, 0, - device_get_nameunit(sc->sc_cdev), sc); - if (rc) { - printk(KERN_ERR "%s: failed to hook irq %d\n", - device_get_nameunit(sc->sc_cdev), sc->sc_irq); - sc->sc_irq = -1; - goto out; - } - - sc->sc_base_addr = (ocf_iomem_t) ioremap(r->start, (r->end - r->start)); - if (!sc->sc_base_addr) { - printk(KERN_ERR "%s: failed to ioremap\n", - device_get_nameunit(sc->sc_cdev)); - goto out; - } - - /* figure out our SEC's properties and capabilities */ - sc->sc_chiprev = (u64)talitos_read(sc->sc_base_addr + TALITOS_ID) << 32 - | talitos_read(sc->sc_base_addr + TALITOS_ID_HI); - DPRINTF("sec id 0x%llx\n", sc->sc_chiprev); - -#ifdef CONFIG_PPC_MERGE - /* get SEC properties from device tree, defaulting to SEC 2.0 */ - - prop = of_get_property(np, "num-channels", NULL); - sc->sc_num_channels = prop ? *prop : TALITOS_NCHANNELS_SEC_2_0; - - prop = of_get_property(np, "channel-fifo-len", NULL); - sc->sc_chfifo_len = prop ? *prop : TALITOS_CHFIFOLEN_SEC_2_0; - - prop = of_get_property(np, "exec-units-mask", NULL); - sc->sc_exec_units = prop ? *prop : TALITOS_HAS_EUS_SEC_2_0; - - prop = of_get_property(np, "descriptor-types-mask", NULL); - sc->sc_desc_types = prop ? *prop : TALITOS_HAS_DESCTYPES_SEC_2_0; -#else - /* bulk should go away with openfirmware flat device tree support */ - if (sc->sc_chiprev & TALITOS_ID_SEC_2_0) { - sc->sc_num_channels = TALITOS_NCHANNELS_SEC_2_0; - sc->sc_chfifo_len = TALITOS_CHFIFOLEN_SEC_2_0; - sc->sc_exec_units = TALITOS_HAS_EUS_SEC_2_0; - sc->sc_desc_types = TALITOS_HAS_DESCTYPES_SEC_2_0; - } else { - printk(KERN_ERR "%s: failed to id device\n", - device_get_nameunit(sc->sc_cdev)); - goto out; - } -#endif - - /* + 1 is for the meta-channel lock used by the channel scheduler */ - sc->sc_chnfifolock = (spinlock_t *) kmalloc( - (sc->sc_num_channels + 1) * sizeof(spinlock_t), GFP_KERNEL); - if (!sc->sc_chnfifolock) - goto out; - for (i = 0; i < sc->sc_num_channels + 1; i++) { - spin_lock_init(&sc->sc_chnfifolock[i]); - } - - sc->sc_chnlastalg = (int *) kmalloc( - sc->sc_num_channels * sizeof(int), GFP_KERNEL); - if (!sc->sc_chnlastalg) - goto out; - memset(sc->sc_chnlastalg, 0, sc->sc_num_channels * sizeof(int)); - - sc->sc_chnfifo = (struct desc_cryptop_pair **) kmalloc( - sc->sc_num_channels * sizeof(struct desc_cryptop_pair *), - GFP_KERNEL); - if (!sc->sc_chnfifo) - goto out; - for (i = 0; i < sc->sc_num_channels; i++) { - sc->sc_chnfifo[i] = (struct desc_cryptop_pair *) kmalloc( - sc->sc_chfifo_len * sizeof(struct desc_cryptop_pair), - GFP_KERNEL); - if (!sc->sc_chnfifo[i]) - goto out; - memset(sc->sc_chnfifo[i], 0, - sc->sc_chfifo_len * sizeof(struct desc_cryptop_pair)); - } - - /* reset and initialize the SEC h/w device */ - talitos_reset_device(sc); - talitos_init_device(sc); - - sc->sc_cid = crypto_get_driverid(softc_get_device(sc),CRYPTOCAP_F_HARDWARE); - if (sc->sc_cid < 0) { - printk(KERN_ERR "%s: could not get crypto driver id\n", - device_get_nameunit(sc->sc_cdev)); - goto out; - } - - /* register algorithms with the framework */ - printk("%s:", device_get_nameunit(sc->sc_cdev)); - - if (sc->sc_exec_units & TALITOS_HAS_EU_RNG) { - printk(" rng"); -#ifdef CONFIG_OCF_RANDOMHARVEST - talitos_rng_init(sc); - crypto_rregister(sc->sc_cid, talitos_read_random, sc); -#endif - } - if (sc->sc_exec_units & TALITOS_HAS_EU_DEU) { - printk(" des/3des"); - crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0); - crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0); - } - if (sc->sc_exec_units & TALITOS_HAS_EU_AESU) { - printk(" aes"); - crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0); - } - if (sc->sc_exec_units & TALITOS_HAS_EU_MDEU) { - printk(" md5"); - crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0); - /* HMAC support only with IPsec for now */ - crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0); - printk(" sha1"); - crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0); - /* HMAC support only with IPsec for now */ - crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0); - } - printk("\n"); - return 0; - -out: -#ifndef CONFIG_PPC_MERGE - talitos_remove(pdev); -#endif - return -ENOMEM; -} - -#ifdef CONFIG_PPC_MERGE -static int talitos_remove(struct of_device *ofdev) -#else -static int talitos_remove(struct platform_device *pdev) -#endif -{ -#ifdef CONFIG_PPC_MERGE - struct talitos_softc *sc = dev_get_drvdata(&ofdev->dev); -#else - struct talitos_softc *sc = platform_get_drvdata(pdev); -#endif - int i; - - DPRINTF("%s()\n", __FUNCTION__); - if (sc->sc_cid >= 0) - crypto_unregister_all(sc->sc_cid); - if (sc->sc_chnfifo) { - for (i = 0; i < sc->sc_num_channels; i++) - if (sc->sc_chnfifo[i]) - kfree(sc->sc_chnfifo[i]); - kfree(sc->sc_chnfifo); - } - if (sc->sc_chnlastalg) - kfree(sc->sc_chnlastalg); - if (sc->sc_chnfifolock) - kfree(sc->sc_chnfifolock); - if (sc->sc_irq != -1) - free_irq(sc->sc_irq, sc); - if (sc->sc_base_addr) - iounmap((void *) sc->sc_base_addr); - kfree(sc); - return 0; -} - -#ifdef CONFIG_PPC_MERGE -static struct of_device_id talitos_match[] = { - { - .type = "crypto", - .compatible = "talitos", - }, - {}, -}; - -MODULE_DEVICE_TABLE(of, talitos_match); - -static struct of_platform_driver talitos_driver = { - .name = DRV_NAME, - .match_table = talitos_match, - .probe = talitos_probe, - .remove = talitos_remove, -}; - -static int __init talitos_init(void) -{ - return of_register_platform_driver(&talitos_driver); -} - -static void __exit talitos_exit(void) -{ - of_unregister_platform_driver(&talitos_driver); -} -#else -/* Structure for a platform device driver */ -static struct platform_driver talitos_driver = { - .probe = talitos_probe, - .remove = talitos_remove, - .driver = { - .name = "fsl-sec2", - } -}; - -static int __init talitos_init(void) -{ - return platform_driver_register(&talitos_driver); -} - -static void __exit talitos_exit(void) -{ - platform_driver_unregister(&talitos_driver); -} -#endif - -module_init(talitos_init); -module_exit(talitos_exit); - -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_AUTHOR("kim.phillips@freescale.com"); -MODULE_DESCRIPTION("OCF driver for Freescale SEC (talitos)"); |