new file mode 100644
@@ -0,0 +1,1241 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/of_device.h>
+#include <linux/vmalloc.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include "spacc_hal.h"
+#include "spacc_core.h"
+
+static const u8 spacc_ctrl_map[SPACC_CTRL_VER_SIZE][SPACC_CTRL_MAPSIZE] = {
+ { 0, 8, 4, 12, 24, 16, 31, 25, 26, 27, 28, 29, 14, 15 },
+ { 0, 8, 3, 12, 24, 16, 31, 25, 26, 27, 28, 29, 14, 15 },
+ { 0, 4, 8, 13, 15, 16, 24, 25, 26, 27, 28, 29, 30, 31 }
+};
+
+static const int keysizes[2][7] = {
+ /* 1 2 4 8 16 32 64 */
+ { 5, 8, 16, 24, 32, 0, 0 }, /* cipher key sizes*/
+ { 8, 16, 20, 24, 32, 64, 128 }, /* hash key sizes*/
+};
+
+
+/* bits are 40, 64, 128, 192, 256, and top bit for hash */
+static const unsigned char template[] = {
+ [CRYPTO_MODE_NULL] = 0,
+ [CRYPTO_MODE_AES_ECB] = 28, /* AESECB 128/224/256 */
+ [CRYPTO_MODE_AES_CBC] = 28, /* AESCBC 128/224/256 */
+ [CRYPTO_MODE_AES_CTR] = 28, /* AESCTR 128/224/256 */
+ [CRYPTO_MODE_AES_CCM] = 28, /* AESCCM 128/224/256 */
+ [CRYPTO_MODE_AES_GCM] = 28, /* AESGCM 128/224/256 */
+ [CRYPTO_MODE_AES_F8] = 28, /* AESF8 128/224/256 */
+ [CRYPTO_MODE_AES_XTS] = 20, /* AESXTS 128/256 */
+ [CRYPTO_MODE_AES_CFB] = 28, /* AESCFB 128/224/256 */
+ [CRYPTO_MODE_AES_OFB] = 28, /* AESOFB 128/224/256 */
+ [CRYPTO_MODE_AES_CS1] = 28, /* AESCS1 128/224/256 */
+ [CRYPTO_MODE_AES_CS2] = 28, /* AESCS2 128/224/256 */
+ [CRYPTO_MODE_AES_CS3] = 28, /* AESCS3 128/224/256 */
+ [CRYPTO_MODE_MULTI2_ECB] = 0, /* MULTI2 */
+ [CRYPTO_MODE_MULTI2_CBC] = 0, /* MULTI2 */
+ [CRYPTO_MODE_MULTI2_OFB] = 0, /* MULTI2 */
+ [CRYPTO_MODE_MULTI2_CFB] = 0, /* MULTI2 */
+ [CRYPTO_MODE_3DES_CBC] = 8, /* 3DES CBC */
+ [CRYPTO_MODE_3DES_ECB] = 8, /* 3DES ECB */
+ [CRYPTO_MODE_DES_CBC] = 2, /* DES CBC */
+ [CRYPTO_MODE_DES_ECB] = 2, /* DES ECB */
+ [CRYPTO_MODE_KASUMI_ECB] = 4, /* KASUMI ECB */
+ [CRYPTO_MODE_KASUMI_F8] = 4, /* KASUMI F8 */
+ [CRYPTO_MODE_SNOW3G_UEA2] = 4, /* SNOW3G */
+ [CRYPTO_MODE_ZUC_UEA3] = 4, /* ZUC */
+ [CRYPTO_MODE_CHACHA20_STREAM] = 16, /* CHACHA20 */
+ [CRYPTO_MODE_CHACHA20_POLY1305] = 16, /* CHACHA20 */
+ [CRYPTO_MODE_SM4_ECB] = 4, /* SM4ECB 128 */
+ [CRYPTO_MODE_SM4_CBC] = 4, /* SM4CBC 128 */
+ [CRYPTO_MODE_SM4_CFB] = 4, /* SM4CFB 128 */
+ [CRYPTO_MODE_SM4_OFB] = 4, /* SM4OFB 128 */
+ [CRYPTO_MODE_SM4_CTR] = 4, /* SM4CTR 128 */
+ [CRYPTO_MODE_SM4_CCM] = 4, /* SM4CCM 128 */
+ [CRYPTO_MODE_SM4_GCM] = 4, /* SM4GCM 128 */
+ [CRYPTO_MODE_SM4_F8] = 4, /* SM4F8 128 */
+ [CRYPTO_MODE_SM4_XTS] = 4, /* SM4XTS 128 */
+ [CRYPTO_MODE_SM4_CS1] = 4, /* SM4CS1 128 */
+ [CRYPTO_MODE_SM4_CS2] = 4, /* SM4CS2 128 */
+ [CRYPTO_MODE_SM4_CS3] = 4, /* SM4CS3 128 */
+
+ [CRYPTO_MODE_HASH_MD5] = 242,
+ [CRYPTO_MODE_HMAC_MD5] = 242,
+ [CRYPTO_MODE_HASH_SHA1] = 242,
+ [CRYPTO_MODE_HMAC_SHA1] = 242,
+ [CRYPTO_MODE_HASH_SHA224] = 242,
+ [CRYPTO_MODE_HMAC_SHA224] = 242,
+ [CRYPTO_MODE_HASH_SHA256] = 242,
+ [CRYPTO_MODE_HMAC_SHA256] = 242,
+ [CRYPTO_MODE_HASH_SHA384] = 242,
+ [CRYPTO_MODE_HMAC_SHA384] = 242,
+ [CRYPTO_MODE_HASH_SHA512] = 242,
+ [CRYPTO_MODE_HMAC_SHA512] = 242,
+ [CRYPTO_MODE_HASH_SHA512_224] = 242,
+ [CRYPTO_MODE_HMAC_SHA512_224] = 242,
+ [CRYPTO_MODE_HASH_SHA512_256] = 242,
+ [CRYPTO_MODE_HMAC_SHA512_256] = 242,
+ [CRYPTO_MODE_MAC_XCBC] = 154, /* XaCBC */
+ [CRYPTO_MODE_MAC_CMAC] = 154, /* CMAC */
+ [CRYPTO_MODE_MAC_KASUMI_F9] = 130, /* KASUMI */
+ [CRYPTO_MODE_MAC_SNOW3G_UIA2] = 130, /* SNOW */
+ [CRYPTO_MODE_MAC_ZUC_UIA3] = 130, /* ZUC */
+ [CRYPTO_MODE_MAC_POLY1305] = 144,
+ [CRYPTO_MODE_SSLMAC_MD5] = 130,
+ [CRYPTO_MODE_SSLMAC_SHA1] = 132,
+ [CRYPTO_MODE_HASH_CRC32] = 0,
+ [CRYPTO_MODE_MAC_MICHAEL] = 129,
+
+ [CRYPTO_MODE_HASH_SHA3_224] = 242,
+ [CRYPTO_MODE_HASH_SHA3_256] = 242,
+ [CRYPTO_MODE_HASH_SHA3_384] = 242,
+ [CRYPTO_MODE_HASH_SHA3_512] = 242,
+ [CRYPTO_MODE_HASH_SHAKE128] = 242,
+ [CRYPTO_MODE_HASH_SHAKE256] = 242,
+ [CRYPTO_MODE_HASH_CSHAKE128] = 130,
+ [CRYPTO_MODE_HASH_CSHAKE256] = 130,
+ [CRYPTO_MODE_MAC_KMAC128] = 242,
+ [CRYPTO_MODE_MAC_KMAC256] = 242,
+ [CRYPTO_MODE_MAC_KMACXOF128] = 242,
+ [CRYPTO_MODE_MAC_KMACXOF256] = 242,
+ [CRYPTO_MODE_HASH_SM3] = 242,
+ [CRYPTO_MODE_HMAC_SM3] = 242,
+ [CRYPTO_MODE_MAC_SM4_XCBC] = 242,
+ [CRYPTO_MODE_MAC_SM4_CMAC] = 242,
+};
+
+/*
+ * This hack implements SG chaining in a way that works around some
+ * limitations of Linux -- the generic sg_chain function fails on ARM, and
+ * the scatterwalk_sg_chain function creates chains that cannot be DMA mapped
+ * on x86. So this one is halfway inbetween, and hopefully works in both
+ * environments.
+ *
+ * Unfortunately, if SG debugging is enabled the scatterwalk code will bail
+ * on these chains, but it will otherwise work properly.
+ */
+static inline void spacc_sg_chain(struct scatterlist *sg1, int num,
+ struct scatterlist *sg2)
+{
+ BUILD_BUG_ON(IS_ENABLED(CONFIG_DEBUG_SG));
+ sg_chain(sg1, num, sg2);
+ sg1[num - 1].page_link |= 1;
+}
+
+/* Prepare the SG for DMA mapping. Returns the number of SG entries. */
+static int fixup_sg(struct scatterlist *sg, int nbytes)
+{
+ int sg_nents = 0;
+
+ while (nbytes > 0) {
+ if (sg && sg->length) {
+ ++sg_nents;
+
+ if (sg->length > nbytes)
+ return sg_nents;
+
+ nbytes -= sg->length;
+
+ sg = sg_next(sg);
+ if (!sg)
+ break;
+ /* WARNING: sg->length may be > nbytes */
+ } else {
+ /*
+ * The Linux crypto system uses its own SG chaining
+ * method which is slightly incompatible with the
+ * generic SG chaining. In particular, dma_map_sg does
+ * not support this method. Turn them into proper
+ * chained SGs here (which dma_map_sg does
+ * support) as a workaround.
+ */
+ spacc_sg_chain(sg, 1, sg_chain_ptr(sg));
+ sg = sg_chain_ptr(sg);
+ if (!sg)
+ break;
+ }
+ }
+
+ return sg_nents;
+}
+
+int spacc_sgs_to_ddt(struct device *dev,
+ struct scatterlist *sg1, int len1, int *ents1,
+ struct scatterlist *sg2, int len2, int *ents2,
+ struct scatterlist *sg3, int len3, int *ents3,
+ struct pdu_ddt *ddt, int dma_direction)
+{
+ unsigned int foo_len[3];
+ int i, j, k, rc, *vents[3];
+ int nents[3], onents[3], tents;
+ struct scatterlist *sg_entry, *foo_sg[3];
+
+ foo_sg[0] = sg1; foo_len[0] = len1; vents[0] = ents1;
+ foo_sg[1] = sg2; foo_len[1] = len2; vents[1] = ents2;
+ foo_sg[2] = sg3; foo_len[2] = len3; vents[2] = ents3;
+
+ /* map them all*/
+ tents = 0;
+ for (j = 0; j < 3; j++) {
+ if (foo_sg[j]) {
+ onents[j] = fixup_sg(foo_sg[j], foo_len[j]);
+ *vents[j] = nents[j] = dma_map_sg(dev, foo_sg[j],
+ onents[j],
+ dma_direction);
+ tents += nents[j];
+ if (nents[j] <= 0) {
+ for (k = 0; k < j; k++) {
+ if (foo_sg[k])
+ dma_unmap_sg(dev, foo_sg[k],
+ nents[k],
+ dma_direction);
+ }
+ return -ENOMEM;
+ }
+ }
+ }
+
+ /* require ATOMIC operations */
+ rc = pdu_ddt_init(ddt, tents | 0x80000000);
+ if (rc < 0) {
+ for (k = 0; k < 3; k++) {
+ if (foo_sg[k])
+ dma_unmap_sg(dev, foo_sg[k],
+ nents[k], dma_direction);
+ }
+ return -EIO;
+ }
+
+ for (j = 0; j < 3; j++) {
+ if (foo_sg[j]) {
+ for_each_sg(foo_sg[j], sg_entry, nents[j], i) {
+ pdu_ddt_add(ddt, sg_dma_address(sg_entry),
+ min(foo_len[j], sg_dma_len(sg_entry)));
+ foo_len[j] -= sg_dma_len(sg_entry);
+ }
+ dma_sync_sg_for_device(dev, foo_sg[j], nents[j],
+ dma_direction);
+ }
+ }
+
+ return tents;
+}
+
+int spacc_sg_to_ddt(struct device *dev, struct scatterlist *sg,
+ int nbytes, struct pdu_ddt *ddt, int dma_direction)
+{
+ struct scatterlist *sg_entry;
+ int nents, orig_nents;
+ int i, rc;
+
+ orig_nents = fixup_sg(sg, nbytes);
+ nents = dma_map_sg(dev, sg, orig_nents, dma_direction);
+
+ if (nents <= 0)
+ return -ENOMEM;
+
+ /* require ATOMIC operations */
+ rc = pdu_ddt_init(ddt, nents | 0x80000000);
+ if (rc < 0) {
+ dma_unmap_sg(dev, sg, orig_nents, dma_direction);
+ return -EIO;
+ }
+
+ for_each_sg(sg, sg_entry, nents, i) {
+ pdu_ddt_add(ddt, sg_dma_address(sg_entry),
+ sg_dma_len(sg_entry));
+ }
+
+ dma_sync_sg_for_device(dev, sg, nents, dma_direction);
+
+ return orig_nents;
+}
+
+int spacc_set_operation(struct spacc_device *spacc, int handle, int op,
+ u32 prot, uint32_t icvcmd, uint32_t icvoff,
+ uint32_t icvsz, uint32_t sec_key)
+{
+ int ret = CRYPTO_OK;
+ struct spacc_job *job = NULL;
+
+ if (handle < 0 || handle > SPACC_MAX_JOBS)
+ return -ENXIO;
+
+ job = &spacc->job[handle];
+ if (!job)
+ return -EIO;
+
+ job->op = op;
+ if (op == OP_ENCRYPT)
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ENCRYPT);
+ else
+ job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ENCRYPT);
+
+ switch (prot) {
+ case ICV_HASH: /* HASH of plaintext */
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_PT);
+ break;
+ case ICV_HASH_ENCRYPT:
+ /* HASH the plaintext and encrypt the lot */
+ /* ICV_PT and ICV_APPEND must be set too */
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_ENC);
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_PT);
+ /* This mode is not valid when BIT_ALIGN != 0 */
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_APPEND);
+ break;
+ case ICV_ENCRYPT_HASH: /* HASH the ciphertext */
+ job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ICV_PT);
+ job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ICV_ENC);
+ break;
+ case ICV_IGNORE:
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ job->icv_len = icvsz;
+
+ switch (icvcmd) {
+ case IP_ICV_OFFSET:
+ job->icv_offset = icvoff;
+ job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ICV_APPEND);
+ break;
+ case IP_ICV_APPEND:
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_APPEND);
+ break;
+ case IP_ICV_IGNORE:
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ if (sec_key)
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_SEC_KEY);
+
+ return ret;
+}
+
+static int _spacc_fifo_full(struct spacc_device *spacc, uint32_t prio)
+{
+ if (spacc->config.is_qos)
+ return readl(spacc->regmap + SPACC_REG_FIFO_STAT) &
+ SPACC_FIFO_STAT_CMDX_FULL(prio);
+ else
+ return readl(spacc->regmap + SPACC_REG_FIFO_STAT) &
+ SPACC_FIFO_STAT_CMD0_FULL;
+}
+
+/* When proc_sz != 0 it overrides the ddt_len value
+ * defined in the context referenced by 'job_idx'
+ */
+int spacc_packet_enqueue_ddt_ex(struct spacc_device *spacc, int use_jb,
+ int job_idx, struct pdu_ddt *src_ddt,
+ struct pdu_ddt *dst_ddt, u32 proc_sz,
+ uint32_t aad_offset, uint32_t pre_aad_sz,
+ u32 post_aad_sz, uint32_t iv_offset,
+ uint32_t prio)
+{
+ int i;
+ struct spacc_job *job;
+ int ret = CRYPTO_OK, proc_len;
+
+ if (job_idx < 0 || job_idx > SPACC_MAX_JOBS)
+ return -ENXIO;
+
+ switch (prio) {
+ case SPACC_SW_CTRL_PRIO_MED:
+ if (spacc->config.cmd1_fifo_depth == 0)
+ return -EINVAL;
+ break;
+ case SPACC_SW_CTRL_PRIO_LOW:
+ if (spacc->config.cmd2_fifo_depth == 0)
+ return -EINVAL;
+ break;
+ }
+
+ job = &spacc->job[job_idx];
+ if (!job)
+ return -EIO;
+
+ /* process any jobs in the jb*/
+ if (use_jb && spacc_process_jb(spacc) != 0)
+ goto fifo_full;
+
+ if (_spacc_fifo_full(spacc, prio)) {
+ if (use_jb)
+ goto fifo_full;
+ else
+ return -EBUSY;
+ }
+
+ /* compute the length we must process, in decrypt mode
+ * with an ICV (hash, hmac or CCM modes)
+ * we must subtract the icv length from the buffer size
+ */
+ if (proc_sz == SPACC_AUTO_SIZE) {
+ proc_len = src_ddt->len;
+
+ if (job->op == OP_DECRYPT &&
+ (job->hash_mode > 0 ||
+ job->enc_mode == CRYPTO_MODE_AES_CCM ||
+ job->enc_mode == CRYPTO_MODE_AES_GCM) &&
+ !(job->ctrl & SPACC_CTRL_MASK(SPACC_CTRL_ICV_ENC)))
+ proc_len = src_ddt->len - job->icv_len;
+ } else {
+ proc_len = proc_sz;
+ }
+
+ if (pre_aad_sz & SPACC_AADCOPY_FLAG) {
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_AAD_COPY);
+ pre_aad_sz &= ~(SPACC_AADCOPY_FLAG);
+ } else {
+ job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_AAD_COPY);
+ }
+
+ job->pre_aad_sz = pre_aad_sz;
+ job->post_aad_sz = post_aad_sz;
+
+ if (spacc->config.dma_type == SPACC_DMA_DDT) {
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_SRC_PTR,
+ (uint32_t)src_ddt->phys,
+ &spacc->cache.src_ptr);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_DST_PTR,
+ (uint32_t)dst_ddt->phys,
+ &spacc->cache.dst_ptr);
+ } else if (spacc->config.dma_type == SPACC_DMA_LINEAR) {
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_SRC_PTR,
+ (uint32_t)src_ddt->virt[0],
+ &spacc->cache.src_ptr);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_DST_PTR,
+ (uint32_t)dst_ddt->virt[0],
+ &spacc->cache.dst_ptr);
+ } else {
+ return -EIO;
+ }
+
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_PROC_LEN,
+ proc_len - job->post_aad_sz,
+ &spacc->cache.proc_len);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_ICV_LEN,
+ job->icv_len, &spacc->cache.icv_len);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_ICV_OFFSET,
+ job->icv_offset, &spacc->cache.icv_offset);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_PRE_AAD_LEN,
+ job->pre_aad_sz, &spacc->cache.pre_aad);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_POST_AAD_LEN,
+ job->post_aad_sz, &spacc->cache.post_aad);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_IV_OFFSET,
+ iv_offset, &spacc->cache.iv_offset);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_OFFSET,
+ aad_offset, &spacc->cache.offset);
+ pdu_io_cached_write(spacc->regmap + SPACC_REG_AUX_INFO,
+ AUX_DIR(job->auxinfo_dir) |
+ AUX_BIT_ALIGN(job->auxinfo_bit_align) |
+ AUX_CBC_CS(job->auxinfo_cs_mode),
+ &spacc->cache.aux);
+
+ if (job->first_use == 1) {
+ writel(job->ckey_sz | SPACC_SET_KEY_CTX(job->ctx_idx),
+ spacc->regmap + SPACC_REG_KEY_SZ);
+ writel(job->hkey_sz | SPACC_SET_KEY_CTX(job->ctx_idx),
+ spacc->regmap + SPACC_REG_KEY_SZ);
+ }
+
+ job->job_swid = spacc->job_next_swid;
+ spacc->job_lookup[job->job_swid] = job_idx;
+ spacc->job_next_swid =
+ (spacc->job_next_swid + 1) % SPACC_MAX_JOBS;
+ writel(SPACC_SW_CTRL_ID_SET(job->job_swid) |
+ SPACC_SW_CTRL_PRIO_SET(prio),
+ spacc->regmap + SPACC_REG_SW_CTRL);
+ writel(job->ctrl, spacc->regmap + SPACC_REG_CTRL);
+
+ /* Clear an expansion key after the first call*/
+ if (job->first_use == 1) {
+ job->first_use = 0;
+ job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_KEY_EXP);
+ }
+
+ return ret;
+
+fifo_full:
+ /* try to add a job to the job buffers*/
+ i = spacc->jb_head + 1;
+ if (i == SPACC_MAX_JOB_BUFFERS)
+ i = 0;
+
+ if (i == spacc->jb_tail)
+ return -EBUSY;
+
+ spacc->job_buffer[spacc->jb_head] = (struct spacc_job_buffer) {
+ .active = 1,
+ .job_idx = job_idx,
+ .src = src_ddt,
+ .dst = dst_ddt,
+ .proc_sz = proc_sz,
+ .aad_offset = aad_offset,
+ .pre_aad_sz = pre_aad_sz,
+ .post_aad_sz = post_aad_sz,
+ .iv_offset = iv_offset,
+ .prio = prio
+ };
+
+ spacc->jb_head = i;
+
+ return CRYPTO_USED_JB;
+}
+
+int spacc_packet_enqueue_ddt(struct spacc_device *spacc, int job_idx,
+ struct pdu_ddt *src_ddt, struct pdu_ddt *dst_ddt,
+ u32 proc_sz, u32 aad_offset, uint32_t pre_aad_sz,
+ uint32_t post_aad_sz, u32 iv_offset, uint32_t prio)
+{
+ int ret;
+ unsigned long lock_flags;
+
+ spin_lock_irqsave(&spacc->lock, lock_flags);
+ ret = spacc_packet_enqueue_ddt_ex(spacc, 1, job_idx, src_ddt,
+ dst_ddt, proc_sz, aad_offset,
+ pre_aad_sz, post_aad_sz,
+ iv_offset, prio);
+ spin_unlock_irqrestore(&spacc->lock, lock_flags);
+
+ return ret;
+}
+
+static int spacc_packet_dequeue(struct spacc_device *spacc, int job_idx)
+{
+ int ret = CRYPTO_OK;
+ struct spacc_job *job = &spacc->job[job_idx];
+ unsigned long lock_flag;
+
+ spin_lock_irqsave(&spacc->lock, lock_flag);
+
+ if (!job && !(job_idx == SPACC_JOB_IDX_UNUSED)) {
+ ret = -EIO;
+ } else if (job->job_done) {
+ job->job_done = 0;
+ ret = job->job_err;
+ } else {
+ ret = -EINPROGRESS;
+ }
+
+ spin_unlock_irqrestore(&spacc->lock, lock_flag);
+
+ return ret;
+}
+
+int spacc_isenabled(struct spacc_device *spacc, int mode, int keysize)
+{
+ int x;
+
+ if (mode < 0 || mode > CRYPTO_MODE_LAST)
+ return 0;
+
+ if (mode == CRYPTO_MODE_NULL ||
+ mode == CRYPTO_MODE_AES_XTS ||
+ mode == CRYPTO_MODE_SM4_XTS ||
+ mode == CRYPTO_MODE_AES_F8 ||
+ mode == CRYPTO_MODE_SM4_F8 ||
+ spacc->config.modes[mode] & 128)
+ return 1;
+
+ for (x = 0; x < 6; x++) {
+ if (keysizes[0][x] == keysize) {
+ if (spacc->config.modes[mode] & (1 << x))
+ return 1;
+ else
+ return 0;
+ }
+ }
+
+ return 0;
+}
+
+/* Releases a crypto context back into appropriate module's pool*/
+int spacc_close(struct spacc_device *dev, int handle)
+{
+ return spacc_job_release(dev, handle);
+}
+
+static void spacc_static_modes(struct spacc_device *spacc, int x, int y)
+{
+ /* Disable the algos that as not supported here */
+ switch (x) {
+ case CRYPTO_MODE_AES_F8:
+ case CRYPTO_MODE_AES_CFB:
+ case CRYPTO_MODE_AES_OFB:
+ case CRYPTO_MODE_MULTI2_ECB:
+ case CRYPTO_MODE_MULTI2_CBC:
+ case CRYPTO_MODE_MULTI2_CFB:
+ case CRYPTO_MODE_MULTI2_OFB:
+ case CRYPTO_MODE_MAC_POLY1305:
+ case CRYPTO_MODE_HASH_CRC32:
+ /* Disable the modes */
+ spacc->config.modes[x] &= ~(1 << y);
+ break;
+ default:
+ break;/* Algos are enabled */
+ }
+}
+
+int spacc_static_config(struct spacc_device *spacc)
+{
+
+ int x, y;
+
+ for (x = 0; x < ARRAY_SIZE(template); x++) {
+ spacc->config.modes[x] = template[x];
+
+ for (y = 0; y < (ARRAY_SIZE(keysizes[0])); y++) {
+ /* List static modes */
+ spacc_static_modes(spacc, x, y);
+ }
+ }
+
+ return 0;
+}
+
+int spacc_clone_handle(struct spacc_device *spacc, int old_handle,
+ void *cbdata)
+{
+ int new_handle;
+
+ new_handle = spacc_job_request(spacc, spacc->job[old_handle].ctx_idx);
+ if (new_handle < 0)
+ return new_handle;
+
+ spacc->job[new_handle] = spacc->job[old_handle];
+ spacc->job[new_handle].job_used = new_handle;
+ spacc->job[new_handle].cbdata = cbdata;
+
+ return new_handle;
+}
+
+/* Allocates a job for spacc module context and initialize
+ * it with an appropriate type.
+ */
+int spacc_open(struct spacc_device *spacc, int enc, int hash, int ctxid,
+ int secure_mode, spacc_callback cb, void *cbdata)
+{
+ u32 ctrl = 0;
+ int job_idx = 0;
+ int ret = CRYPTO_OK;
+ struct spacc_job *job = NULL;
+
+ job_idx = spacc_job_request(spacc, ctxid);
+ if (job_idx < 0)
+ return -EIO;
+
+ job = &spacc->job[job_idx];
+
+ if (secure_mode && job->ctx_idx > spacc->config.num_sec_ctx) {
+ pr_debug("ERR: For secure contexts");
+ pr_debug("ERR: Job ctx ID is outside allowed range\n");
+ spacc_job_release(spacc, job_idx);
+ return -EIO;
+ }
+
+ job->auxinfo_cs_mode = 0;
+ job->auxinfo_bit_align = 0;
+ job->auxinfo_dir = 0;
+ job->icv_len = 0;
+
+ switch (enc) {
+ case CRYPTO_MODE_NULL:
+ break;
+ case CRYPTO_MODE_AES_ECB:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_ECB);
+ break;
+ case CRYPTO_MODE_AES_CBC:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC);
+ break;
+ case CRYPTO_MODE_AES_CS3:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC);
+ job->auxinfo_cs_mode = 3;
+ break;
+ case CRYPTO_MODE_AES_CTR:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CTR);
+ break;
+ case CRYPTO_MODE_AES_XTS:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_XTS);
+ break;
+ case CRYPTO_MODE_3DES_CBC:
+ case CRYPTO_MODE_DES_CBC:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_DES);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC);
+ break;
+ case CRYPTO_MODE_3DES_ECB:
+ case CRYPTO_MODE_DES_ECB:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_DES);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_ECB);
+ break;
+ case CRYPTO_MODE_CHACHA20_STREAM:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_CHACHA20);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CHACHA_STREAM);
+ break;
+ case CRYPTO_MODE_SM4_ECB:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_ECB);
+ break;
+ case CRYPTO_MODE_SM4_CBC:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC);
+ break;
+ case CRYPTO_MODE_SM4_CS3:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC);
+ job->auxinfo_cs_mode = 3;
+ break;
+ case CRYPTO_MODE_SM4_CTR:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CTR);
+ break;
+ case CRYPTO_MODE_SM4_XTS:
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4);
+ ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_XTS);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ }
+
+ ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_MSG_BEGIN) |
+ SPACC_CTRL_MASK(SPACC_CTRL_MSG_END);
+
+ if (ret != CRYPTO_OK) {
+ spacc_job_release(spacc, job_idx);
+ } else {
+ ret = job_idx;
+ job->first_use = 1;
+ job->enc_mode = enc;
+ job->hash_mode = hash;
+ job->ckey_sz = 0;
+ job->hkey_sz = 0;
+ job->job_done = 0;
+ job->job_swid = 0;
+ job->job_secure = !!secure_mode;
+
+ job->auxinfo_bit_align = 0;
+ job->job_err = -EINPROGRESS;
+ job->ctrl = ctrl |
+ SPACC_CTRL_SET(SPACC_CTRL_CTX_IDX,
+ job->ctx_idx);
+ job->cb = cb;
+ job->cbdata = cbdata;
+ }
+
+ return ret;
+}
+
+static int spacc_xof_stringsize_autodetect(struct spacc_device *spacc)
+{
+ void *virt;
+ dma_addr_t dma;
+ struct pdu_ddt ddt;
+ int ss, alg, i, stat;
+ unsigned long spacc_ctrl[2] = {0xF400B400, 0xF400D400};
+ unsigned char buf[256];
+ unsigned long buflen, rbuf;
+ unsigned char test_str[6] = {0x01, 0x20, 0x54, 0x45, 0x53, 0x54};
+ unsigned char md[2][16] = {
+ {0xc3, 0x6d, 0x0a, 0x88, 0xfa, 0x37, 0x4c, 0x9b,
+ 0x44, 0x74, 0xeb, 0x00, 0x5f, 0xe8, 0xca, 0x25},
+ {0x68, 0x77, 0x04, 0x11, 0xf8, 0xe3, 0xb0, 0x1e,
+ 0x0d, 0xbf, 0x71, 0x6a, 0xe9, 0x87, 0x1a, 0x0d}};
+
+ virt = dma_alloc_coherent(get_ddt_device(), 256, &dma, GFP_KERNEL);
+ if (!virt)
+ return -EIO;
+
+ if (pdu_ddt_init(&ddt, 1)) {
+ dma_free_coherent(get_ddt_device(), 256, virt, dma);
+ return -EIO;
+ }
+ pdu_ddt_add(&ddt, dma, 256);
+
+ /* populate registers for jobs*/
+ writel((uint32_t)ddt.phys, spacc->regmap + SPACC_REG_SRC_PTR);
+ writel((uint32_t)ddt.phys, spacc->regmap + SPACC_REG_DST_PTR);
+
+ writel(16, spacc->regmap + SPACC_REG_PROC_LEN);
+ writel(16, spacc->regmap + SPACC_REG_PRE_AAD_LEN);
+ writel(16, spacc->regmap + SPACC_REG_ICV_LEN);
+ writel(6, spacc->regmap + SPACC_REG_KEY_SZ);
+ writel(0, spacc->regmap + SPACC_REG_SW_CTRL);
+
+ /* repeat for 2 algorithms, CSHAKE128 and KMAC128*/
+ for (alg = 0; (alg < 2) && (spacc->config.string_size == 0); alg++) {
+ /* repeat for 4 string_size sizes*/
+ for (ss = 0; ss < 4; ss++) {
+ buflen = (32UL << ss);
+ if (buflen > spacc->config.hash_page_size)
+ break;
+
+ /* clear I/O memory*/
+ memset(virt, 0, 256);
+
+ /* clear buf and then insert test string*/
+ memset(buf, 0, sizeof(buf));
+ memcpy(buf, test_str, sizeof(test_str));
+ memcpy(buf + (buflen >> 1), test_str, sizeof(test_str));
+
+ /* write key context */
+ pdu_to_dev_s(spacc->regmap + SPACC_CTX_HASH_KEY,
+ buf,
+ spacc->config.hash_page_size >> 2,
+ spacc->config.spacc_endian);
+
+ /* write ctrl register */
+ writel(spacc_ctrl[alg], spacc->regmap + SPACC_REG_CTRL);
+
+ /* wait for job to complete */
+ for (i = 0; i < 20; i++) {
+ rbuf = 0;
+ rbuf = readl(spacc->regmap +
+ SPACC_REG_FIFO_STAT) &
+ SPACC_FIFO_STAT_STAT_EMPTY;
+ if (!rbuf) {
+ /* check result, if it matches,
+ * we have string_size
+ */
+ writel(1, spacc->regmap +
+ SPACC_REG_STAT_POP);
+ rbuf = 0;
+ rbuf = readl(spacc->regmap +
+ SPACC_REG_STATUS);
+ stat = SPACC_GET_STATUS_RET_CODE(rbuf);
+ if ((!memcmp(virt, md[alg], 16)) &&
+ stat == SPACC_OK) {
+ spacc->config.string_size =
+ (16 << ss);
+ }
+ break;
+ }
+ }
+ }
+ }
+
+ /* reset registers */
+ writel(0, spacc->regmap + SPACC_REG_IRQ_CTRL);
+ writel(0, spacc->regmap + SPACC_REG_IRQ_EN);
+ writel(0xFFFFFFFF, spacc->regmap + SPACC_REG_IRQ_STAT);
+
+ writel(0, spacc->regmap + SPACC_REG_SRC_PTR);
+ writel(0, spacc->regmap + SPACC_REG_DST_PTR);
+ writel(0, spacc->regmap + SPACC_REG_PROC_LEN);
+ writel(0, spacc->regmap + SPACC_REG_ICV_LEN);
+ writel(0, spacc->regmap + SPACC_REG_PRE_AAD_LEN);
+
+ pdu_ddt_free(&ddt);
+ dma_free_coherent(get_ddt_device(), 256, virt, dma);
+
+ return CRYPTO_OK;
+}
+
+/* free up the memory */
+void spacc_fini(struct spacc_device *spacc)
+{
+ vfree(spacc->ctx);
+ vfree(spacc->job);
+}
+
+int spacc_init(void __iomem *baseaddr, struct spacc_device *spacc,
+ struct pdu_info *info)
+{
+ unsigned long id;
+ char version_string[3][16] = { "SPACC", "SPACC-PDU" };
+ char idx_string[2][16] = { "(Normal Port)", "(Secure Port)" };
+ char dma_type_string[4][16] = { "Unknown", "Scattergather", "Linear",
+ "Unknown" };
+
+ if (!baseaddr) {
+ pr_debug("ERR: baseaddr is NULL\n");
+ return -1;
+ }
+ if (!spacc) {
+ pr_debug("ERR: spacc is NULL\n");
+ return -1;
+ }
+
+ memset(spacc, 0, sizeof(*spacc));
+ spin_lock_init(&spacc->lock);
+ spin_lock_init(&spacc->ctx_lock);
+
+ /* assign the baseaddr*/
+ spacc->regmap = baseaddr;
+
+ /* version info*/
+ spacc->config.version = info->spacc_version.version;
+ spacc->config.pdu_version = (info->pdu_config.major << 4) |
+ info->pdu_config.minor;
+ spacc->config.project = info->spacc_version.project;
+ spacc->config.is_pdu = info->spacc_version.is_pdu;
+ spacc->config.is_qos = info->spacc_version.qos;
+
+ /* misc*/
+ spacc->config.is_partial = info->spacc_version.partial;
+ spacc->config.num_ctx = info->spacc_config.num_ctx;
+ spacc->config.ciph_page_size = 1U <<
+ info->spacc_config.ciph_ctx_page_size;
+
+ spacc->config.hash_page_size = 1U <<
+ info->spacc_config.hash_ctx_page_size;
+
+ spacc->config.dma_type = info->spacc_config.dma_type;
+ spacc->config.idx = info->spacc_version.vspacc_idx;
+ spacc->config.cmd0_fifo_depth = info->spacc_config.cmd0_fifo_depth;
+ spacc->config.cmd1_fifo_depth = info->spacc_config.cmd1_fifo_depth;
+ spacc->config.cmd2_fifo_depth = info->spacc_config.cmd2_fifo_depth;
+ spacc->config.stat_fifo_depth = info->spacc_config.stat_fifo_depth;
+ spacc->config.fifo_cnt = 1;
+ spacc->config.is_ivimport = info->spacc_version.ivimport;
+
+ /* ctrl register map*/
+ if (spacc->config.version <= 0x4E)
+ spacc->config.ctrl_map = spacc_ctrl_map[SPACC_CTRL_VER_0];
+ else if (spacc->config.version <= 0x60)
+ spacc->config.ctrl_map = spacc_ctrl_map[SPACC_CTRL_VER_1];
+ else
+ spacc->config.ctrl_map = spacc_ctrl_map[SPACC_CTRL_VER_2];
+
+ spacc->job_next_swid = 0;
+ spacc->wdcnt = 0;
+ spacc->config.wd_timer = SPACC_WD_TIMER_INIT;
+
+ /* version 4.10 uses IRQ,
+ * above uses WD and we don't support below 4.00
+ */
+ if (spacc->config.version < 0x40) {
+ pr_debug("ERR: Unsupported SPAcc version\n");
+ return -EIO;
+ } else if (spacc->config.version < 0x4B) {
+ spacc->op_mode = SPACC_OP_MODE_IRQ;
+ } else {
+ spacc->op_mode = SPACC_OP_MODE_WD;
+ }
+
+ /* set threshold and enable irq
+ * on 4.11 and newer cores we can derive this
+ * from the HW reported depths.
+ */
+ if (spacc->config.stat_fifo_depth == 1)
+ spacc->config.ideal_stat_level = 1;
+ else if (spacc->config.stat_fifo_depth <= 4)
+ spacc->config.ideal_stat_level =
+ spacc->config.stat_fifo_depth - 1;
+ else if (spacc->config.stat_fifo_depth <= 8)
+ spacc->config.ideal_stat_level =
+ spacc->config.stat_fifo_depth - 2;
+ else
+ spacc->config.ideal_stat_level =
+ spacc->config.stat_fifo_depth - 4;
+
+ /* determine max PROClen value */
+ writel(0xFFFFFFFF, spacc->regmap + SPACC_REG_PROC_LEN);
+ spacc->config.max_msg_size = readl(spacc->regmap + SPACC_REG_PROC_LEN);
+
+ /* read config info*/
+ if (spacc->config.is_pdu) {
+ pr_debug("PDU:\n");
+ pr_debug(" MAJOR : %u\n", info->pdu_config.major);
+ pr_debug(" MINOR : %u\n", info->pdu_config.minor);
+ }
+
+ id = readl(spacc->regmap + SPACC_REG_ID);
+ pr_debug("SPACC ID: (%08lx)\n", (unsigned long)id);
+ pr_debug(" MAJOR : %x\n", info->spacc_version.major);
+ pr_debug(" MINOR : %x\n", info->spacc_version.minor);
+ pr_debug(" QOS : %x\n", info->spacc_version.qos);
+ pr_debug(" IVIMPORT : %x\n", spacc->config.is_ivimport);
+
+ if (spacc->config.version >= 0x48)
+ pr_debug(" TYPE : %lx (%s)\n", SPACC_ID_TYPE(id),
+ version_string[SPACC_ID_TYPE(id) & 3]);
+
+ pr_debug(" AUX : %x\n", info->spacc_version.qos);
+ pr_debug(" IDX : %lx %s\n", SPACC_ID_VIDX(id),
+ spacc->config.is_secure ?
+ (idx_string[spacc->config.is_secure_port & 1]) : "");
+ pr_debug(" PARTIAL : %x\n", info->spacc_version.partial);
+ pr_debug(" PROJECT : %x\n", info->spacc_version.project);
+
+ if (spacc->config.version >= 0x48)
+ id = readl(spacc->regmap + SPACC_REG_CONFIG);
+ else
+ id = 0xFFFFFFFF;
+
+ pr_debug("SPACC CFG: (%08lx)\n", id);
+ pr_debug(" CTX CNT : %u\n", info->spacc_config.num_ctx);
+ pr_debug(" VSPACC CNT : %u\n", info->spacc_config.num_vspacc);
+ pr_debug(" CIPH SZ : %-3lu bytes\n", 1UL <<
+ info->spacc_config.ciph_ctx_page_size);
+ pr_debug(" HASH SZ : %-3lu bytes\n", 1UL <<
+ info->spacc_config.hash_ctx_page_size);
+ pr_debug(" DMA TYPE : %u (%s)\n", info->spacc_config.dma_type,
+ dma_type_string[info->spacc_config.dma_type & 3]);
+ pr_debug(" MAX PROCLEN: %lu bytes\n", (unsigned long)
+ spacc->config.max_msg_size);
+ pr_debug(" FIFO CONFIG :\n");
+ pr_debug(" CMD0 DEPTH: %d\n", spacc->config.cmd0_fifo_depth);
+
+ if (spacc->config.is_qos) {
+ pr_debug(" CMD1 DEPTH: %d\n",
+ spacc->config.cmd1_fifo_depth);
+ pr_debug(" CMD2 DEPTH: %d\n",
+ spacc->config.cmd2_fifo_depth);
+ }
+ pr_debug(" STAT DEPTH: %d\n", spacc->config.stat_fifo_depth);
+
+ if (spacc->config.dma_type == SPACC_DMA_DDT) {
+ writel(0x1234567F, baseaddr + SPACC_REG_DST_PTR);
+ writel(0xDEADBEEF, baseaddr + SPACC_REG_SRC_PTR);
+
+ if (((readl(baseaddr + SPACC_REG_DST_PTR)) !=
+ (0x1234567F & SPACC_DST_PTR_PTR)) ||
+ ((readl(baseaddr + SPACC_REG_SRC_PTR)) !=
+ (0xDEADBEEF & SPACC_SRC_PTR_PTR))) {
+ pr_debug("ERR: Failed to set pointers\n");
+ goto ERR;
+ }
+ }
+
+ /* zero the IRQ CTRL/EN register
+ * (to make sure we're in a sane state)
+ */
+ writel(0, spacc->regmap + SPACC_REG_IRQ_CTRL);
+ writel(0, spacc->regmap + SPACC_REG_IRQ_EN);
+ writel(0xFFFFFFFF, spacc->regmap + SPACC_REG_IRQ_STAT);
+
+ /* init cache*/
+ memset(&spacc->cache, 0, sizeof(spacc->cache));
+ writel(0, spacc->regmap + SPACC_REG_SRC_PTR);
+ writel(0, spacc->regmap + SPACC_REG_DST_PTR);
+ writel(0, spacc->regmap + SPACC_REG_PROC_LEN);
+ writel(0, spacc->regmap + SPACC_REG_ICV_LEN);
+ writel(0, spacc->regmap + SPACC_REG_ICV_OFFSET);
+ writel(0, spacc->regmap + SPACC_REG_PRE_AAD_LEN);
+ writel(0, spacc->regmap + SPACC_REG_POST_AAD_LEN);
+ writel(0, spacc->regmap + SPACC_REG_IV_OFFSET);
+ writel(0, spacc->regmap + SPACC_REG_OFFSET);
+ writel(0, spacc->regmap + SPACC_REG_AUX_INFO);
+
+ spacc->ctx = vmalloc(sizeof(struct spacc_ctx) * spacc->config.num_ctx);
+ if (!spacc->ctx)
+ goto ERR;
+
+ spacc->job = vmalloc(sizeof(struct spacc_job) * SPACC_MAX_JOBS);
+ if (!spacc->job)
+ goto ERR;
+
+ /* initialize job_idx and lookup table */
+ spacc_job_init_all(spacc);
+
+ /* initialize contexts */
+ spacc_ctx_init_all(spacc);
+
+ /* autodetect and set string size setting*/
+ if (spacc->config.version == 0x61 || spacc->config.version >= 0x65)
+ spacc_xof_stringsize_autodetect(spacc);
+
+ return CRYPTO_OK;
+ERR:
+ spacc_fini(spacc);
+ pr_debug("ERR: Crypto Failed\n");
+
+ return -EIO;
+}
+
+/* callback function to initialize tasklet running */
+void spacc_pop_jobs(unsigned long data)
+{
+ int num = 0;
+ struct spacc_priv *priv = (struct spacc_priv *)data;
+ struct spacc_device *spacc = &priv->spacc;
+
+ /* decrement the WD CNT here since
+ * now we're actually going to respond
+ * to the IRQ completely
+ */
+ if (spacc->wdcnt)
+ --(spacc->wdcnt);
+
+ spacc_pop_packets(spacc, &num);
+}
+
+int spacc_remove(struct platform_device *pdev)
+{
+ struct spacc_device *spacc;
+ struct spacc_priv *priv = platform_get_drvdata(pdev);
+
+ /* free test vector memory*/
+ spacc = &priv->spacc;
+ spacc_fini(spacc);
+
+ tasklet_kill(&priv->pop_jobs);
+
+ /* devm functions do proper cleanup */
+ pdu_mem_deinit(&pdev->dev);
+ dev_dbg(&pdev->dev, "removed!\n");
+
+ return 0;
+}
+
+int spacc_set_key_exp(struct spacc_device *spacc, int job_idx)
+{
+ struct spacc_ctx *ctx = NULL;
+ struct spacc_job *job = NULL;
+
+ if (job_idx < 0 || job_idx > SPACC_MAX_JOBS) {
+ pr_debug("ERR: Invalid Job id specified (out of range)\n");
+ return -ENXIO;
+ }
+
+ job = &spacc->job[job_idx];
+ ctx = context_lookup_by_job(spacc, job_idx);
+
+ if (!ctx) {
+ pr_debug("ERR: Failed to find ctx id\n");
+ return -EIO;
+ }
+
+ job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_KEY_EXP);
+
+ return CRYPTO_OK;
+}
+
+int spacc_compute_xcbc_key(struct spacc_device *spacc, int mode_id,
+ int job_idx, const unsigned char *key,
+ int keylen, unsigned char *xcbc_out)
+{
+ unsigned char *buf;
+ dma_addr_t bufphys;
+ struct pdu_ddt ddt;
+ unsigned char iv[16];
+ int err, i, handle, usecbc, ctx_idx;
+
+ if (job_idx >= 0 && job_idx < SPACC_MAX_JOBS)
+ ctx_idx = spacc->job[job_idx].ctx_idx;
+ else
+ ctx_idx = -1;
+
+ if (mode_id == CRYPTO_MODE_MAC_XCBC) {
+ /* figure out if we can schedule the key */
+ if (spacc_isenabled(spacc, CRYPTO_MODE_AES_ECB, 16))
+ usecbc = 0;
+ else if (spacc_isenabled(spacc, CRYPTO_MODE_AES_CBC, 16))
+ usecbc = 1;
+ else
+ return -1;
+ } else if (mode_id == CRYPTO_MODE_MAC_SM4_XCBC) {
+ /* figure out if we can schedule the key */
+ if (spacc_isenabled(spacc, CRYPTO_MODE_SM4_ECB, 16))
+ usecbc = 0;
+ else if (spacc_isenabled(spacc, CRYPTO_MODE_SM4_CBC, 16))
+ usecbc = 1;
+ else
+ return -1;
+ } else {
+ return -1;
+ }
+
+ memset(iv, 0, sizeof(iv));
+ memset(&ddt, 0, sizeof(ddt));
+
+ buf = dma_alloc_coherent(get_ddt_device(), 64, &bufphys, GFP_KERNEL);
+ if (!buf)
+ return -EINVAL;
+
+ handle = -1;
+
+ /* set to 1111...., 2222...., 333... */
+ for (i = 0; i < 48; i++)
+ buf[i] = (i >> 4) + 1;
+
+ /* build DDT */
+ err = pdu_ddt_init(&ddt, 1);
+ if (err)
+ goto xcbc_err;
+
+ pdu_ddt_add(&ddt, bufphys, 48);
+
+ /* open a handle in either CBC or ECB mode */
+ if (mode_id == CRYPTO_MODE_MAC_XCBC) {
+ handle = spacc_open(spacc, (usecbc ?
+ CRYPTO_MODE_AES_CBC : CRYPTO_MODE_AES_ECB),
+ CRYPTO_MODE_NULL, ctx_idx, 0, NULL, NULL);
+ if (handle < 0) {
+ err = handle;
+ goto xcbc_err;
+ }
+ } else if (mode_id == CRYPTO_MODE_MAC_SM4_XCBC) {
+ handle = spacc_open(spacc, (usecbc ?
+ CRYPTO_MODE_SM4_CBC : CRYPTO_MODE_SM4_ECB),
+ CRYPTO_MODE_NULL, ctx_idx, 0, NULL, NULL);
+ if (handle < 0) {
+ err = handle;
+ goto xcbc_err;
+ }
+ }
+ spacc_set_operation(spacc, handle, OP_ENCRYPT, 0, 0, 0, 0, 0);
+
+ if (usecbc) {
+ /* we can do the ECB work in CBC using three
+ * jobs with the IVreset to zero each time
+ */
+ for (i = 0; i < 3; i++) {
+ spacc_write_context(spacc, handle,
+ SPACC_CRYPTO_OPERATION, key,
+ keylen, iv, 16);
+ err = spacc_packet_enqueue_ddt(spacc, handle, &ddt,
+ &ddt, 16, (i * 16) |
+ ((i * 16) << 16), 0, 0, 0, 0);
+ if (err != CRYPTO_OK)
+ goto xcbc_err;
+
+ do {
+ err = spacc_packet_dequeue(spacc, handle);
+ } while (err == -EINPROGRESS);
+ if (err != CRYPTO_OK)
+ goto xcbc_err;
+ }
+ } else {
+ /* do the 48 bytes as a single SPAcc job this is the ideal case
+ * but only possible if ECB was enabled in the core
+ */
+ spacc_write_context(spacc, handle, SPACC_CRYPTO_OPERATION,
+ key, keylen, iv, 16);
+ err = spacc_packet_enqueue_ddt(spacc, handle, &ddt, &ddt, 48,
+ 0, 0, 0, 0, 0);
+ if (err != CRYPTO_OK)
+ goto xcbc_err;
+
+ do {
+ err = spacc_packet_dequeue(spacc, handle);
+ } while (err == -EINPROGRESS);
+ if (err != CRYPTO_OK)
+ goto xcbc_err;
+ }
+
+ /* now we can copy the key*/
+ memcpy(xcbc_out, buf, 48);
+ memset(buf, 0, 64);
+
+xcbc_err:
+ dma_free_coherent(get_ddt_device(), 64, buf, bufphys);
+ pdu_ddt_free(&ddt);
+ if (handle >= 0)
+ spacc_close(spacc, handle);
+
+ if (err)
+ return -EINVAL;
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,826 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+
+#ifndef SPACC_CORE_H_
+#define SPACC_CORE_H_
+
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/of_device.h>
+#include <linux/dma-mapping.h>
+#include <crypto/skcipher.h>
+#include "spacc_hal.h"
+
+enum {
+ SPACC_DMA_UNDEF = 0,
+ SPACC_DMA_DDT = 1,
+ SPACC_DMA_LINEAR = 2
+};
+
+enum {
+ SPACC_OP_MODE_IRQ = 0,
+ SPACC_OP_MODE_WD = 1 /* watchdog */
+};
+
+#define OP_ENCRYPT 0
+#define OP_DECRYPT 1
+
+#define SPACC_CRYPTO_OPERATION 1
+#define SPACC_HASH_OPERATION 2
+
+#define SPACC_AADCOPY_FLAG 0x80000000
+
+#define SPACC_AUTO_SIZE (-1)
+
+#define SPACC_WD_LIMIT 0x80
+#define SPACC_WD_TIMER_INIT 0x40000
+
+/********* Register Offsets **********/
+#define SPACC_REG_IRQ_EN 0x00000L
+#define SPACC_REG_IRQ_STAT 0x00004L
+#define SPACC_REG_IRQ_CTRL 0x00008L
+#define SPACC_REG_FIFO_STAT 0x0000CL
+#define SPACC_REG_SDMA_BRST_SZ 0x00010L
+
+#define SPACC_REG_SRC_PTR 0x00020L
+#define SPACC_REG_DST_PTR 0x00024L
+#define SPACC_REG_OFFSET 0x00028L
+#define SPACC_REG_PRE_AAD_LEN 0x0002CL
+#define SPACC_REG_POST_AAD_LEN 0x00030L
+
+#define SPACC_REG_PROC_LEN 0x00034L
+#define SPACC_REG_ICV_LEN 0x00038L
+#define SPACC_REG_ICV_OFFSET 0x0003CL
+#define SPACC_REG_IV_OFFSET 0x00040L
+
+#define SPACC_REG_SW_CTRL 0x00044L
+#define SPACC_REG_AUX_INFO 0x00048L
+#define SPACC_REG_CTRL 0x0004CL
+
+#define SPACC_REG_STAT_POP 0x00050L
+#define SPACC_REG_STATUS 0x00054L
+
+#define SPACC_REG_STAT_WD_CTRL 0x00080L
+
+#define SPACC_REG_KEY_SZ 0x00100L
+
+#define SPACC_REG_VIRTUAL_RQST 0x00140L
+#define SPACC_REG_VIRTUAL_ALLOC 0x00144L
+#define SPACC_REG_VIRTUAL_PRIO 0x00148L
+
+#define SPACC_REG_ID 0x00180L
+#define SPACC_REG_CONFIG 0x00184L
+#define SPACC_REG_CONFIG2 0x00190L
+
+#define SPACC_REG_SECURE_CTRL 0x001C0L
+#define SPACC_REG_SECURE_RELEASE 0x001C4
+
+#define SPACC_REG_SK_LOAD 0x00200L
+#define SPACC_REG_SK_STAT 0x00204L
+#define SPACC_REG_SK_KEY 0x00240L
+
+#define SPACC_REG_VERSION_EXT_3 0x00194L
+
+/* out 8MB from base of SPACC */
+#define SPACC_REG_SKP 0x800000UL
+
+/********** Context Offsets **********/
+#define SPACC_CTX_CIPH_KEY 0x04000L
+#define SPACC_CTX_HASH_KEY 0x08000L
+
+/******** Sub-Context Offsets ********/
+#define SPACC_CTX_AES_KEY 0x00
+#define SPACC_CTX_AES_IV 0x20
+
+#define SPACC_CTX_DES_KEY 0x08
+#define SPACC_CTX_DES_IV 0x00
+
+/* use these to loop over CMDX macros */
+#define SPACC_CMDX_MAX 1
+#define SPACC_CMDX_MAX_QOS 3
+/********** IRQ_EN Bit Masks **********/
+
+#define _SPACC_IRQ_CMD0 0
+#define _SPACC_IRQ_STAT 4
+#define _SPACC_IRQ_STAT_WD 12
+#define _SPACC_IRQ_GLBL 31
+
+#define SPACC_IRQ_EN_CMD(x) (1UL << _SPACC_IRQ_CMD0 << (x))
+#define SPACC_IRQ_EN_STAT BIT(_SPACC_IRQ_STAT)
+#define SPACC_IRQ_EN_STAT_WD BIT(_SPACC_IRQ_STAT_WD)
+#define SPACC_IRQ_EN_GLBL BIT(_SPACC_IRQ_GLBL)
+
+/********* IRQ_STAT Bitmasks *********/
+
+#define SPACC_IRQ_STAT_CMDX(x) (1UL << _SPACC_IRQ_CMD0 << (x))
+#define SPACC_IRQ_STAT_STAT BIT(_SPACC_IRQ_STAT)
+#define SPACC_IRQ_STAT_STAT_WD BIT(_SPACC_IRQ_STAT_WD)
+
+#define SPACC_IRQ_STAT_CLEAR_STAT(spacc) writel(SPACC_IRQ_STAT_STAT, \
+ (spacc)->regmap + SPACC_REG_IRQ_STAT)
+
+#define SPACC_IRQ_STAT_CLEAR_STAT_WD(spacc) writel(SPACC_IRQ_STAT_STAT_WD, \
+ (spacc)->regmap + SPACC_REG_IRQ_STAT)
+
+#define SPACC_IRQ_STAT_CLEAR_CMDX(spacc, x) writel(SPACC_IRQ_STAT_CMDX(x), \
+ (spacc)->regmap + SPACC_REG_IRQ_STAT)
+
+/********* IRQ_CTRL Bitmasks *********/
+/* CMD0 = 0; for QOS, CMD1 = 8, CMD2 = 16 */
+#define _SPACC_IRQ_CTRL_CMDX_CNT(x) (8 * (x))
+#define SPACC_IRQ_CTRL_CMDX_CNT_SET(x, n) \
+ (((n) & 0xFF) << _SPACC_IRQ_CTRL_CMDX_CNT(x))
+#define SPACC_IRQ_CTRL_CMDX_CNT_MASK(x) \
+ (0xFF << _SPACC_IRQ_CTRL_CMDX_CNT(x))
+
+/* STAT_CNT is at 16 and for QOS at 24 */
+#define _SPACC_IRQ_CTRL_STAT_CNT 16
+#define SPACC_IRQ_CTRL_STAT_CNT_SET(n) ((n) << _SPACC_IRQ_CTRL_STAT_CNT)
+#define SPACC_IRQ_CTRL_STAT_CNT_MASK (0x1FF << _SPACC_IRQ_CTRL_STAT_CNT)
+
+#define _SPACC_IRQ_CTRL_STAT_CNT_QOS 24
+#define SPACC_IRQ_CTRL_STAT_CNT_SET_QOS(n) \
+ ((n) << _SPACC_IRQ_CTRL_STAT_CNT_QOS)
+#define SPACC_IRQ_CTRL_STAT_CNT_MASK_QOS \
+ (0x7F << _SPACC_IRQ_CTRL_STAT_CNT_QOS)
+
+/******** FIFO_STAT Bitmasks *********/
+
+/* SPACC with QOS */
+#define SPACC_FIFO_STAT_CMDX_CNT_MASK(x) \
+ (0x7F << ((x) * 8))
+#define SPACC_FIFO_STAT_CMDX_CNT_GET(x, y) \
+ (((y) & SPACC_FIFO_STAT_CMDX_CNT_MASK(x)) >> ((x) * 8))
+#define SPACC_FIFO_STAT_CMDX_FULL(x) (1UL << (7 + (x) * 8))
+
+#define _SPACC_FIFO_STAT_STAT_CNT_QOS 24
+#define SPACC_FIFO_STAT_STAT_CNT_MASK_QOS \
+ (0x7F << _SPACC_FIFO_STAT_STAT_CNT_QOS)
+#define SPACC_FIFO_STAT_STAT_CNT_GET_QOS(y) \
+ (((y) & \
+ SPACC_FIFO_STAT_STAT_CNT_MASK_QOS) >> _SPACC_FIFO_STAT_STAT_CNT_QOS)
+
+/* SPACC without QOS */
+#define SPACC_FIFO_STAT_CMD0_CNT_MASK (0x1FF)
+#define SPACC_FIFO_STAT_CMD0_CNT_GET(y) ((y) & SPACC_FIFO_STAT_CMD0_CNT_MASK)
+#define _SPACC_FIFO_STAT_CMD0_FULL 15
+#define SPACC_FIFO_STAT_CMD0_FULL BIT(_SPACC_FIFO_STAT_CMD0_FULL)
+
+#define _SPACC_FIFO_STAT_STAT_CNT 16
+#define SPACC_FIFO_STAT_STAT_CNT_MASK (0x1FF << _SPACC_FIFO_STAT_STAT_CNT)
+#define SPACC_FIFO_STAT_STAT_CNT_GET(y) \
+ (((y) & SPACC_FIFO_STAT_STAT_CNT_MASK) >> _SPACC_FIFO_STAT_STAT_CNT)
+
+/* both */
+#define _SPACC_FIFO_STAT_STAT_EMPTY 31
+#define SPACC_FIFO_STAT_STAT_EMPTY BIT(_SPACC_FIFO_STAT_STAT_EMPTY)
+
+/********* SRC/DST_PTR Bitmasks **********/
+
+#define SPACC_SRC_PTR_PTR 0xFFFFFFF8
+#define SPACC_DST_PTR_PTR 0xFFFFFFF8
+
+/********** OFFSET Bitmasks **********/
+
+#define SPACC_OFFSET_SRC_O 0
+#define SPACC_OFFSET_SRC_W 16
+#define SPACC_OFFSET_DST_O 16
+#define SPACC_OFFSET_DST_W 16
+
+#define SPACC_MIN_CHUNK_SIZE 1024
+#define SPACC_MAX_CHUNK_SIZE 16384
+
+/********* PKT_LEN Bitmasks **********/
+
+#ifndef _SPACC_PKT_LEN_PROC_LEN
+#define _SPACC_PKT_LEN_PROC_LEN 0
+#endif
+#ifndef _SPACC_PKT_LEN_AAD_LEN
+#define _SPACC_PKT_LEN_AAD_LEN 16
+#endif
+
+/********* SW_CTRL Bitmasks ***********/
+
+#define _SPACC_SW_CTRL_ID_0 0
+#define SPACC_SW_CTRL_ID_W 8
+#define SPACC_SW_CTRL_ID_MASK (0xFF << _SPACC_SW_CTRL_ID_0)
+#define SPACC_SW_CTRL_ID_GET(y) \
+ (((y) & SPACC_SW_CTRL_ID_MASK) >> _SPACC_SW_CTRL_ID_0)
+#define SPACC_SW_CTRL_ID_SET(id) \
+ (((id) & SPACC_SW_CTRL_ID_MASK) >> _SPACC_SW_CTRL_ID_0)
+
+#define _SPACC_SW_CTRL_PRIO 30
+#define SPACC_SW_CTRL_PRIO_MASK 0x3
+#define SPACC_SW_CTRL_PRIO_SET(prio) \
+ (((prio) & SPACC_SW_CTRL_PRIO_MASK) << _SPACC_SW_CTRL_PRIO)
+
+/* Priorities */
+#define SPACC_SW_CTRL_PRIO_HI 0
+#define SPACC_SW_CTRL_PRIO_MED 1
+#define SPACC_SW_CTRL_PRIO_LOW 2
+
+/*********** SECURE_CTRL bitmasks *********/
+#define _SPACC_SECURE_CTRL_MS_SRC 0
+#define _SPACC_SECURE_CTRL_MS_DST 1
+#define _SPACC_SECURE_CTRL_MS_DDT 2
+#define _SPACC_SECURE_CTRL_LOCK 31
+
+#define SPACC_SECURE_CTRL_MS_SRC BIT(_SPACC_SECURE_CTRL_MS_SRC)
+#define SPACC_SECURE_CTRL_MS_DST BIT(_SPACC_SECURE_CTRL_MS_DST)
+#define SPACC_SECURE_CTRL_MS_DDT BIT(_SPACC_SECURE_CTRL_MS_DDT)
+#define SPACC_SECURE_CTRL_LOCK BIT(_SPACC_SECURE_CTRL_LOCK)
+
+/********* SKP bits **************/
+#define _SPACC_SK_LOAD_CTX_IDX 0
+#define _SPACC_SK_LOAD_ALG 8
+#define _SPACC_SK_LOAD_MODE 12
+#define _SPACC_SK_LOAD_SIZE 16
+#define _SPACC_SK_LOAD_ENC_EN 30
+#define _SPACC_SK_LOAD_DEC_EN 31
+#define _SPACC_SK_STAT_BUSY 0
+
+#define SPACC_SK_LOAD_ENC_EN BIT(_SPACC_SK_LOAD_ENC_EN)
+#define SPACC_SK_LOAD_DEC_EN BIT(_SPACC_SK_LOAD_DEC_EN)
+#define SPACC_SK_STAT_BUSY BIT(_SPACC_SK_STAT_BUSY)
+
+/*********** CTRL Bitmasks ***********/
+/* These CTRL field locations vary with SPACC version
+ * and if they are used, they should be set accordingly
+ */
+#define _SPACC_CTRL_CIPH_ALG 0
+#define _SPACC_CTRL_HASH_ALG 4
+#define _SPACC_CTRL_CIPH_MODE 8
+#define _SPACC_CTRL_HASH_MODE 12
+#define _SPACC_CTRL_MSG_BEGIN 14
+#define _SPACC_CTRL_MSG_END 15
+#define _SPACC_CTRL_CTX_IDX 16
+#define _SPACC_CTRL_ENCRYPT 24
+#define _SPACC_CTRL_AAD_COPY 25
+#define _SPACC_CTRL_ICV_PT 26
+#define _SPACC_CTRL_ICV_ENC 27
+#define _SPACC_CTRL_ICV_APPEND 28
+#define _SPACC_CTRL_KEY_EXP 29
+#define _SPACC_CTRL_SEC_KEY 31
+
+/* CTRL bitmasks for 4.15+ cores */
+#define _SPACC_CTRL_CIPH_ALG_415 0
+#define _SPACC_CTRL_HASH_ALG_415 3
+#define _SPACC_CTRL_CIPH_MODE_415 8
+#define _SPACC_CTRL_HASH_MODE_415 12
+
+/********* Virtual Spacc Priority Bitmasks **********/
+#define _SPACC_VPRIO_MODE 0
+#define _SPACC_VPRIO_WEIGHT 8
+
+/********* AUX INFO Bitmasks *********/
+#define _SPACC_AUX_INFO_DIR 0
+#define _SPACC_AUX_INFO_BIT_ALIGN 1
+#define _SPACC_AUX_INFO_CBC_CS 16
+
+/********* STAT_POP Bitmasks *********/
+#define _SPACC_STAT_POP_POP 0
+#define SPACC_STAT_POP_POP BIT(_SPACC_STAT_POP_POP)
+
+/********** STATUS Bitmasks **********/
+#define _SPACC_STATUS_SW_ID 0
+#define _SPACC_STATUS_RET_CODE 24
+#define _SPACC_STATUS_SEC_CMD 31
+#define SPACC_GET_STATUS_RET_CODE(s) \
+ (((s) >> _SPACC_STATUS_RET_CODE) & 0x7)
+
+#define SPACC_STATUS_SW_ID_MASK (0xFF << _SPACC_STATUS_SW_ID)
+#define SPACC_STATUS_SW_ID_GET(y) \
+ (((y) & SPACC_STATUS_SW_ID_MASK) >> _SPACC_STATUS_SW_ID)
+
+/********** KEY_SZ Bitmasks **********/
+#define _SPACC_KEY_SZ_SIZE 0
+#define _SPACC_KEY_SZ_CTX_IDX 8
+#define _SPACC_KEY_SZ_CIPHER 31
+
+#define SPACC_KEY_SZ_CIPHER BIT(_SPACC_KEY_SZ_CIPHER)
+
+#define SPACC_SET_CIPHER_KEY_SZ(z) \
+ (((z) << _SPACC_KEY_SZ_SIZE) | (1UL << _SPACC_KEY_SZ_CIPHER))
+#define SPACC_SET_HASH_KEY_SZ(z) ((z) << _SPACC_KEY_SZ_SIZE)
+#define SPACC_SET_KEY_CTX(ctx) ((ctx) << _SPACC_KEY_SZ_CTX_IDX)
+
+/*****************************************************************************/
+
+#define AUX_DIR(a) ((a) << _SPACC_AUX_INFO_DIR)
+#define AUX_BIT_ALIGN(a) ((a) << _SPACC_AUX_INFO_BIT_ALIGN)
+#define AUX_CBC_CS(a) ((a) << _SPACC_AUX_INFO_CBC_CS)
+
+#define VPRIO_SET(mode, weight) \
+ (((mode) << _SPACC_VPRIO_MODE) | ((weight) << _SPACC_VPRIO_WEIGHT))
+
+#ifndef MAX_DDT_ENTRIES
+/* add one for null at end of list */
+#define MAX_DDT_ENTRIES \
+ ((SPACC_MAX_MSG_MALLOC_SIZE / SPACC_MAX_PARTICLE_SIZE) + 1)
+#endif
+
+#define DDT_ENTRY_SIZE (sizeof(ddt_entry) * MAX_DDT_ENTRIES)
+
+#ifndef SPACC_MAX_JOBS
+#define SPACC_MAX_JOBS BIT(SPACC_SW_CTRL_ID_W)
+#endif
+
+#if SPACC_MAX_JOBS > 256
+# error SPACC_MAX_JOBS cannot exceed 256.
+#endif
+
+#ifndef SPACC_MAX_JOB_BUFFERS
+#define SPACC_MAX_JOB_BUFFERS 192
+#endif
+
+#define CRYPTO_USED_JB 256
+
+/* max DDT particle size */
+#ifndef SPACC_MAX_PARTICLE_SIZE
+#define SPACC_MAX_PARTICLE_SIZE 4096
+#endif
+
+/* max message size from HW configuration */
+/* usually defined in ICD as (2 exponent 16) -1 */
+#ifndef _SPACC_MAX_MSG_MALLOC_SIZE
+#define _SPACC_MAX_MSG_MALLOC_SIZE 16
+#endif
+#define SPACC_MAX_MSG_MALLOC_SIZE BIT(_SPACC_MAX_MSG_MALLOC_SIZE)
+
+#ifndef SPACC_MAX_MSG_SIZE
+#define SPACC_MAX_MSG_SIZE (SPACC_MAX_MSG_MALLOC_SIZE - 1)
+#endif
+
+#define SPACC_LOOP_WAIT 1000000
+#define SPACC_CTR_IV_MAX8 ((u32)0xFF)
+#define SPACC_CTR_IV_MAX16 ((u32)0xFFFF)
+#define SPACC_CTR_IV_MAX32 ((u32)0xFFFFFFFF)
+#define SPACC_CTR_IV_MAX64 ((u64)0xFFFFFFFFFFFFFFFF)
+
+/* cipher algos */
+enum ecipher {
+ C_NULL = 0,
+ C_DES = 1,
+ C_AES = 2,
+ C_RC4 = 3,
+ C_MULTI2 = 4,
+ C_KASUMI = 5,
+ C_SNOW3G_UEA2 = 6,
+ C_ZUC_UEA3 = 7,
+ C_CHACHA20 = 8,
+ C_SM4 = 9,
+ C_MAX = 10
+};
+
+/* ctrl reg cipher modes */
+enum eciphermode {
+ CM_ECB = 0,
+ CM_CBC = 1,
+ CM_CTR = 2,
+ CM_CCM = 3,
+ CM_GCM = 5,
+ CM_OFB = 7,
+ CM_CFB = 8,
+ CM_F8 = 9,
+ CM_XTS = 10,
+ CM_MAX = 11
+};
+
+enum echachaciphermode {
+ CM_CHACHA_STREAM = 2,
+ CM_CHACHA_AEAD = 5
+};
+
+enum ehash {
+ H_NULL = 0,
+ H_MD5 = 1,
+ H_SHA1 = 2,
+ H_SHA224 = 3,
+ H_SHA256 = 4,
+ H_SHA384 = 5,
+ H_SHA512 = 6,
+ H_XCBC = 7,
+ H_CMAC = 8,
+ H_KF9 = 9,
+ H_SNOW3G_UIA2 = 10,
+ H_CRC32_I3E802_3 = 11,
+ H_ZUC_UIA3 = 12,
+ H_SHA512_224 = 13,
+ H_SHA512_256 = 14,
+ H_MICHAEL = 15,
+ H_SHA3_224 = 16,
+ H_SHA3_256 = 17,
+ H_SHA3_384 = 18,
+ H_SHA3_512 = 19,
+ H_SHAKE128 = 20,
+ H_SHAKE256 = 21,
+ H_POLY1305 = 22,
+ H_SM3 = 23,
+ H_SM4_XCBC_MAC = 24,
+ H_SM4_CMAC = 25,
+ H_MAX = 26
+};
+
+enum ehashmode {
+ HM_RAW = 0,
+ HM_SSLMAC = 1,
+ HM_HMAC = 2,
+ HM_MAX = 3
+};
+
+enum eshakehashmode {
+ HM_SHAKE_SHAKE = 0,
+ HM_SHAKE_CSHAKE = 1,
+ HM_SHAKE_KMAC = 2
+};
+
+enum spacc_ret_code {
+ SPACC_OK = 0,
+ SPACC_ICVFAIL = 1,
+ SPACC_MEMERR = 2,
+ SPACC_BLOCKERR = 3,
+ SPACC_SECERR = 4
+};
+
+enum eicvpos {
+ IP_ICV_OFFSET = 0,
+ IP_ICV_APPEND = 1,
+ IP_ICV_IGNORE = 2,
+ IP_MAX = 3
+};
+
+enum {
+ /* HASH of plaintext */
+ ICV_HASH = 0,
+ /* HASH the plaintext and encrypt the plaintext and ICV */
+ ICV_HASH_ENCRYPT = 1,
+ /* HASH the ciphertext */
+ ICV_ENCRYPT_HASH = 2,
+ ICV_IGNORE = 3,
+ IM_MAX = 4
+};
+
+enum {
+ NO_PARTIAL_PCK = 0,
+ FIRST_PARTIAL_PCK = 1,
+ MIDDLE_PARTIAL_PCK = 2,
+ LAST_PARTIAL_PCK = 3
+};
+
+enum crypto_modes {
+ CRYPTO_MODE_NULL,
+ CRYPTO_MODE_AES_ECB,
+ CRYPTO_MODE_AES_CBC,
+ CRYPTO_MODE_AES_CTR,
+ CRYPTO_MODE_AES_CCM,
+ CRYPTO_MODE_AES_GCM,
+ CRYPTO_MODE_AES_F8,
+ CRYPTO_MODE_AES_XTS,
+ CRYPTO_MODE_AES_CFB,
+ CRYPTO_MODE_AES_OFB,
+ CRYPTO_MODE_AES_CS1,
+ CRYPTO_MODE_AES_CS2,
+ CRYPTO_MODE_AES_CS3,
+ CRYPTO_MODE_MULTI2_ECB,
+ CRYPTO_MODE_MULTI2_CBC,
+ CRYPTO_MODE_MULTI2_OFB,
+ CRYPTO_MODE_MULTI2_CFB,
+ CRYPTO_MODE_3DES_CBC,
+ CRYPTO_MODE_3DES_ECB,
+ CRYPTO_MODE_DES_CBC,
+ CRYPTO_MODE_DES_ECB,
+ CRYPTO_MODE_KASUMI_ECB,
+ CRYPTO_MODE_KASUMI_F8,
+ CRYPTO_MODE_SNOW3G_UEA2,
+ CRYPTO_MODE_ZUC_UEA3,
+ CRYPTO_MODE_CHACHA20_STREAM,
+ CRYPTO_MODE_CHACHA20_POLY1305,
+ CRYPTO_MODE_SM4_ECB,
+ CRYPTO_MODE_SM4_CBC,
+ CRYPTO_MODE_SM4_CFB,
+ CRYPTO_MODE_SM4_OFB,
+ CRYPTO_MODE_SM4_CTR,
+ CRYPTO_MODE_SM4_CCM,
+ CRYPTO_MODE_SM4_GCM,
+ CRYPTO_MODE_SM4_F8,
+ CRYPTO_MODE_SM4_XTS,
+ CRYPTO_MODE_SM4_CS1,
+ CRYPTO_MODE_SM4_CS2,
+ CRYPTO_MODE_SM4_CS3,
+
+ CRYPTO_MODE_HASH_MD5,
+ CRYPTO_MODE_HMAC_MD5,
+ CRYPTO_MODE_HASH_SHA1,
+ CRYPTO_MODE_HMAC_SHA1,
+ CRYPTO_MODE_HASH_SHA224,
+ CRYPTO_MODE_HMAC_SHA224,
+ CRYPTO_MODE_HASH_SHA256,
+ CRYPTO_MODE_HMAC_SHA256,
+ CRYPTO_MODE_HASH_SHA384,
+ CRYPTO_MODE_HMAC_SHA384,
+ CRYPTO_MODE_HASH_SHA512,
+ CRYPTO_MODE_HMAC_SHA512,
+ CRYPTO_MODE_HASH_SHA512_224,
+ CRYPTO_MODE_HMAC_SHA512_224,
+ CRYPTO_MODE_HASH_SHA512_256,
+ CRYPTO_MODE_HMAC_SHA512_256,
+
+ CRYPTO_MODE_MAC_XCBC,
+ CRYPTO_MODE_MAC_CMAC,
+ CRYPTO_MODE_MAC_KASUMI_F9,
+ CRYPTO_MODE_MAC_SNOW3G_UIA2,
+ CRYPTO_MODE_MAC_ZUC_UIA3,
+ CRYPTO_MODE_MAC_POLY1305,
+
+ CRYPTO_MODE_SSLMAC_MD5,
+ CRYPTO_MODE_SSLMAC_SHA1,
+ CRYPTO_MODE_HASH_CRC32,
+ CRYPTO_MODE_MAC_MICHAEL,
+
+ CRYPTO_MODE_HASH_SHA3_224,
+ CRYPTO_MODE_HASH_SHA3_256,
+ CRYPTO_MODE_HASH_SHA3_384,
+ CRYPTO_MODE_HASH_SHA3_512,
+
+ CRYPTO_MODE_HASH_SHAKE128,
+ CRYPTO_MODE_HASH_SHAKE256,
+ CRYPTO_MODE_HASH_CSHAKE128,
+ CRYPTO_MODE_HASH_CSHAKE256,
+ CRYPTO_MODE_MAC_KMAC128,
+ CRYPTO_MODE_MAC_KMAC256,
+ CRYPTO_MODE_MAC_KMACXOF128,
+ CRYPTO_MODE_MAC_KMACXOF256,
+
+ CRYPTO_MODE_HASH_SM3,
+ CRYPTO_MODE_HMAC_SM3,
+ CRYPTO_MODE_MAC_SM4_XCBC,
+ CRYPTO_MODE_MAC_SM4_CMAC,
+
+ CRYPTO_MODE_LAST
+};
+
+/* job descriptor */
+typedef void (*spacc_callback)(void *spacc_dev, void *data);
+
+struct spacc_job {
+ unsigned long
+ enc_mode, /* Encryption Algorithm mode */
+ hash_mode, /* HASH Algorithm mode */
+ icv_len,
+ icv_offset,
+ op, /* Operation */
+ ctrl, /* CTRL shadow register */
+
+ /* context just initialized or taken,
+ * and this is the first use.
+ */
+ first_use,
+ pre_aad_sz, post_aad_sz, /* size of AAD for the latest packet*/
+ hkey_sz,
+ ckey_sz;
+
+ /* Direction and bit alignment parameters for the AUX_INFO reg */
+ unsigned int auxinfo_dir, auxinfo_bit_align;
+ unsigned int auxinfo_cs_mode; /* AUX info setting for CBC-CS */
+
+ u32 ctx_idx;
+ unsigned int job_used, job_swid, job_done, job_err, job_secure;
+ spacc_callback cb;
+ void *cbdata;
+
+};
+
+#define SPACC_CTX_IDX_UNUSED 0xFFFFFFFF
+#define SPACC_JOB_IDX_UNUSED 0xFFFFFFFF
+
+struct spacc_ctx {
+ /* Memory context to store cipher keys*/
+ void __iomem *ciph_key;
+ /* Memory context to store hash keys*/
+ void __iomem *hash_key;
+ /* reference count of jobs using this context */
+ int ref_cnt;
+ /* number of contexts following related to this one */
+ int ncontig;
+};
+
+#define SPACC_CTRL_MASK(field) \
+ (1UL << spacc->config.ctrl_map[(field)])
+#define SPACC_CTRL_SET(field, value) \
+ ((value) << spacc->config.ctrl_map[(field)])
+
+enum {
+ SPACC_CTRL_VER_0,
+ SPACC_CTRL_VER_1,
+ SPACC_CTRL_VER_2,
+ SPACC_CTRL_VER_SIZE
+};
+
+enum {
+ SPACC_CTRL_CIPH_ALG,
+ SPACC_CTRL_CIPH_MODE,
+ SPACC_CTRL_HASH_ALG,
+ SPACC_CTRL_HASH_MODE,
+ SPACC_CTRL_ENCRYPT,
+ SPACC_CTRL_CTX_IDX,
+ SPACC_CTRL_SEC_KEY,
+ SPACC_CTRL_AAD_COPY,
+ SPACC_CTRL_ICV_PT,
+ SPACC_CTRL_ICV_ENC,
+ SPACC_CTRL_ICV_APPEND,
+ SPACC_CTRL_KEY_EXP,
+ SPACC_CTRL_MSG_BEGIN,
+ SPACC_CTRL_MSG_END,
+ SPACC_CTRL_MAPSIZE
+};
+
+struct spacc_device {
+ void __iomem *regmap;
+ int zero_key;
+
+ /* hardware configuration */
+ struct {
+ unsigned int version,
+ pdu_version,
+ project;
+ uint32_t max_msg_size; /* max PROCLEN value */
+
+ unsigned char modes[CRYPTO_MODE_LAST];
+
+ int num_ctx, /* no. of contexts */
+ num_sec_ctx, /* no. of SKP contexts*/
+ sec_ctx_page_size, /* page size of SKP context in bytes*/
+ ciph_page_size, /* cipher context page size in bytes*/
+ hash_page_size, /* hash context page size in bytes*/
+ string_size,
+ is_qos, /* QOS spacc? */
+ is_pdu, /* PDU spacc? */
+ is_secure,
+ is_secure_port, /* Are we on the secure port? */
+ is_partial, /* Is partial processing enabled? */
+ is_ivimport, /* is ivimport enabled? */
+ dma_type, /* DMA type: linear or scattergather */
+ idx, /* Which virtual spacc IDX is this? */
+ priority, /* Weighted priority of virtual spacc */
+ cmd0_fifo_depth, /* CMD FIFO depths */
+ cmd1_fifo_depth,
+ cmd2_fifo_depth,
+ stat_fifo_depth, /* depth of STATUS FIFO */
+ fifo_cnt,
+ ideal_stat_level,
+ spacc_endian;
+
+ uint32_t wd_timer;
+ u64 oldtimer, timer;
+
+ const u8 *ctrl_map; /* map of ctrl register field offsets */
+ } config;
+
+ struct spacc_job_buffer {
+ int active;
+ int job_idx;
+ struct pdu_ddt *src, *dst;
+ u32 proc_sz, aad_offset, pre_aad_sz,
+ post_aad_sz, iv_offset, prio;
+ } job_buffer[SPACC_MAX_JOB_BUFFERS];
+
+ int jb_head, jb_tail;
+
+ int op_mode, /* operating mode and watchdog functionality */
+ wdcnt; /* number of pending WD IRQs*/
+
+ /* SW_ID value which will be used for next job. */
+ unsigned int job_next_swid;
+
+ struct spacc_ctx *ctx; /* This size changes per configured device */
+ struct spacc_job *job; /* allocate memory for [SPACC_MAX_JOBS]; */
+ int job_lookup[SPACC_MAX_JOBS]; /* correlate SW_ID back to job index */
+
+ spinlock_t lock; /* lock for register access */
+ spinlock_t ctx_lock; /* lock for context manager */
+
+ /* callback functions for IRQ processing */
+ void (*irq_cb_cmdx)(struct spacc_device *spacc, int x);
+ void (*irq_cb_stat)(struct spacc_device *spacc);
+ void (*irq_cb_stat_wd)(struct spacc_device *spacc);
+
+ /* this is called after jobs have been popped off the STATUS FIFO
+ * useful so you can be told when there might be space available
+ * in the CMD FIFO
+ */
+ void (*spacc_notify_jobs)(struct spacc_device *spacc);
+
+ /* cache*/
+ struct {
+ u32 src_ptr,
+ dst_ptr,
+ proc_len,
+ icv_len,
+ icv_offset,
+ pre_aad,
+ post_aad,
+ iv_offset,
+ offset,
+ aux;
+ } cache;
+
+ struct device *dptr;
+};
+
+enum {
+ SPACC_IRQ_MODE_WD = 1, /* use WD*/
+ SPACC_IRQ_MODE_STEP = 2 /* older use CMD/STAT stepping */
+};
+
+enum {
+ SPACC_IRQ_CMD_GET = 0,
+ SPACC_IRQ_CMD_SET = 1
+};
+
+struct spacc_priv {
+ struct spacc_device spacc;
+ struct semaphore core_running;
+ struct tasklet_struct pop_jobs;
+ spinlock_t hw_lock;
+ unsigned long max_msg_len;
+};
+
+
+int spacc_open(struct spacc_device *spacc, int enc, int hash, int ctx,
+ int secure_mode, spacc_callback cb, void *cbdata);
+int spacc_clone_handle(struct spacc_device *spacc, int old_handle,
+ void *cbdata);
+int spacc_close(struct spacc_device *spacc, int job_idx);
+int spacc_set_operation(struct spacc_device *spacc, int job_idx, int op,
+ u32 prot, uint32_t icvcmd, uint32_t icvoff,
+ uint32_t icvsz, uint32_t sec_key);
+int spacc_set_key_exp(struct spacc_device *spacc, int job_idx);
+
+int spacc_packet_enqueue_ddt_ex(struct spacc_device *spacc, int use_jb,
+ int job_idx, struct pdu_ddt *src_ddt, struct pdu_ddt *dst_ddt,
+ u32 proc_sz, uint32_t aad_offset, uint32_t pre_aad_sz,
+ u32 post_aad_sz, uint32_t iv_offset, uint32_t prio);
+int spacc_packet_enqueue_ddt(struct spacc_device *spacc, int job_idx,
+ struct pdu_ddt *src_ddt, struct pdu_ddt *dst_ddt,
+ uint32_t proc_sz, u32 aad_offset, uint32_t pre_aad_sz,
+ uint32_t post_aad_sz, u32 iv_offset, uint32_t prio);
+
+/* IRQ handling functions */
+void spacc_irq_cmdx_enable(struct spacc_device *spacc, int cmdx, int cmdx_cnt);
+void spacc_irq_cmdx_disable(struct spacc_device *spacc, int cmdx);
+void spacc_irq_stat_enable(struct spacc_device *spacc, int stat_cnt);
+void spacc_irq_stat_disable(struct spacc_device *spacc);
+void spacc_irq_stat_wd_enable(struct spacc_device *spacc);
+void spacc_irq_stat_wd_disable(struct spacc_device *spacc);
+void spacc_irq_glbl_enable(struct spacc_device *spacc);
+void spacc_irq_glbl_disable(struct spacc_device *spacc);
+uint32_t spacc_process_irq(struct spacc_device *spacc);
+void spacc_set_wd_count(struct spacc_device *spacc, uint32_t val);
+irqreturn_t spacc_irq_handler(int irq, void *dev);
+int spacc_sgs_to_ddt(struct device *dev,
+ struct scatterlist *sg1, int len1, int *ents1,
+ struct scatterlist *sg2, int len2, int *ents2,
+ struct scatterlist *sg3, int len3, int *ents3,
+ struct pdu_ddt *ddt, int dma_direction);
+int spacc_sg_to_ddt(struct device *dev, struct scatterlist *sg,
+ int nbytes, struct pdu_ddt *ddt, int dma_direction);
+
+/* Context Manager */
+void spacc_ctx_init_all(struct spacc_device *spacc);
+
+/* SPAcc specific manipulation of context memory */
+int spacc_write_context(struct spacc_device *spacc, int job_idx, int op,
+ const unsigned char *key, int ksz,
+ const unsigned char *iv, int ivsz);
+
+int spacc_read_context(struct spacc_device *spacc, int job_idx, int op,
+ unsigned char *key, int ksz, unsigned char *iv,
+ int ivsz);
+
+/* Job Manager */
+void spacc_job_init_all(struct spacc_device *spacc);
+int spacc_job_request(struct spacc_device *dev, int job_idx);
+int spacc_job_release(struct spacc_device *dev, int job_idx);
+int spacc_handle_release(struct spacc_device *spacc, int job_idx);
+
+/* Helper functions */
+struct spacc_ctx *context_lookup_by_job(struct spacc_device *spacc,
+ int job_idx);
+int spacc_isenabled(struct spacc_device *spacc, int mode, int keysize);
+int spacc_compute_xcbc_key(struct spacc_device *spacc, int mode_id,
+ int job_idx, const unsigned char *key,
+ int keylen, unsigned char *xcbc_out);
+
+int spacc_process_jb(struct spacc_device *spacc);
+int spacc_remove(struct platform_device *pdev);
+int spacc_static_config(struct spacc_device *spacc);
+int spacc_autodetect(struct spacc_device *spacc);
+void spacc_pop_jobs(unsigned long data);
+void spacc_fini(struct spacc_device *spacc);
+int spacc_init(void __iomem *baseaddr, struct spacc_device *spacc,
+ struct pdu_info *info);
+int spacc_pop_packets(struct spacc_device *spacc, int *num_popped);
+void spacc_stat_process(struct spacc_device *spacc);
+void spacc_cmd_process(struct spacc_device *spacc, int x);
+
+#endif
new file mode 100644
@@ -0,0 +1,339 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/of_device.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include "spacc_device.h"
+
+static struct platform_device *spacc_pdev[ELP_CAPI_MAX_DEV + 1];
+
+#define VSPACC_PRIORITY_MAX 15
+
+void spacc_cmd_process(struct spacc_device *spacc, int x)
+{
+ struct spacc_priv *priv = container_of(spacc, struct spacc_priv, spacc);
+
+ /* run tasklet to pop jobs off fifo */
+ tasklet_schedule(&priv->pop_jobs);
+}
+void spacc_stat_process(struct spacc_device *spacc)
+{
+ struct spacc_priv *priv = container_of(spacc, struct spacc_priv, spacc);
+
+ /* run tasklet to pop jobs off fifo */
+ tasklet_schedule(&priv->pop_jobs);
+}
+
+
+int spacc_probe(struct platform_device *pdev,
+ const struct of_device_id snps_spacc_id[])
+{
+ int spacc_idx = -1;
+ struct resource *mem;
+ int spacc_endian = 0;
+ void __iomem *baseaddr;
+ struct pdu_info info;
+ int spacc_priority = -1;
+ struct spacc_priv *priv;
+ int x = 0, err, oldmode, irq_num;
+ const struct of_device_id *match, *id;
+ u64 oldtimer = 100000, timer = 100000;
+
+ if (pdev->dev.of_node) {
+ id = of_match_node(snps_spacc_id, pdev->dev.of_node);
+ if (!id) {
+ dev_err(&pdev->dev, "DT node did not match\n");
+ return -EINVAL;
+ }
+ }
+
+ /* Initialize DDT DMA pools based on this device's resources */
+ if (pdu_mem_init(&pdev->dev)) {
+ dev_err(&pdev->dev, "Could not initialize DMA pools\n");
+ return -ENOMEM;
+ }
+
+ match = of_match_device(of_match_ptr(snps_spacc_id), &pdev->dev);
+ if (!match) {
+ dev_err(&pdev->dev, "SPAcc dtb missing");
+ return -ENODEV;
+ }
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem) {
+ dev_err(&pdev->dev, "no memory resource for spacc\n");
+ err = -ENXIO;
+ goto free_ddt_mem_pool;
+ }
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ err = -ENOMEM;
+ goto free_ddt_mem_pool;
+ }
+
+ /* Read spacc priority and index and save inside priv.spacc.config */
+ if (of_property_read_u32(pdev->dev.of_node, "spacc_priority",
+ &spacc_priority)) {
+ dev_err(&pdev->dev, "No vspacc priority specified\n");
+ err = -EINVAL;
+ goto free_ddt_mem_pool;
+ }
+
+ if (spacc_priority < 0 && spacc_priority > VSPACC_PRIORITY_MAX) {
+ dev_err(&pdev->dev, "Invalid vspacc priority\n");
+ err = -EINVAL;
+ goto free_ddt_mem_pool;
+ }
+ priv->spacc.config.priority = spacc_priority;
+
+ if (of_property_read_u32(pdev->dev.of_node, "spacc_index",
+ &spacc_idx)) {
+ dev_err(&pdev->dev, "No vspacc index specified\n");
+ err = -EINVAL;
+ goto free_ddt_mem_pool;
+ }
+ priv->spacc.config.idx = spacc_idx;
+
+ if (of_property_read_u32(pdev->dev.of_node, "spacc_endian",
+ &spacc_endian)) {
+ dev_dbg(&pdev->dev, "No spacc_endian specified\n");
+ dev_dbg(&pdev->dev, "Default spacc Endianness (0==little)\n");
+ spacc_endian = 0;
+ }
+ priv->spacc.config.spacc_endian = spacc_endian;
+
+ if (of_property_read_u64(pdev->dev.of_node, "oldtimer",
+ &oldtimer)) {
+ dev_dbg(&pdev->dev, "No oldtimer specified\n");
+ dev_dbg(&pdev->dev, "Default oldtimer (100000)\n");
+ oldtimer = 100000;
+ }
+ priv->spacc.config.oldtimer = oldtimer;
+
+ if (of_property_read_u64(pdev->dev.of_node, "timer", &timer)) {
+ dev_dbg(&pdev->dev, "No timer specified\n");
+ dev_dbg(&pdev->dev, "Default timer (100000)\n");
+ timer = 100000;
+ }
+ priv->spacc.config.timer = timer;
+
+ baseaddr = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(baseaddr)) {
+ dev_err(&pdev->dev, "unable to map iomem\n");
+ err = PTR_ERR(baseaddr);
+ goto free_ddt_mem_pool;
+ }
+
+ pdu_get_version(baseaddr, &info);
+ if (pdev->dev.platform_data) {
+ struct pdu_info *parent_info = pdev->dev.platform_data;
+
+ memcpy(&info.pdu_config, &parent_info->pdu_config,
+ sizeof(info.pdu_config));
+ }
+
+ dev_dbg(&pdev->dev, "EPN %04X : virt [%d]\n",
+ info.spacc_version.project,
+ info.spacc_version.vspacc_idx);
+
+ /* Validate virtual spacc index with vspacc count read from
+ * VERSION_EXT.VSPACC_CNT. Thus vspacc count=3, gives valid index 0,1,2
+ */
+ if (spacc_idx != info.spacc_version.vspacc_idx) {
+ dev_err(&pdev->dev, "DTS vspacc_idx mismatch read value\n");
+ err = -EINVAL;
+ goto free_ddt_mem_pool;
+ }
+
+ if (spacc_idx < 0 || spacc_idx > (info.spacc_config.num_vspacc - 1)) {
+ dev_err(&pdev->dev, "Invalid vspacc index specified\n");
+ err = -EINVAL;
+ goto free_ddt_mem_pool;
+ }
+
+ err = spacc_init(baseaddr, &priv->spacc, &info);
+ if (err != CRYPTO_OK) {
+ dev_err(&pdev->dev, "Failed to initialize device %d\n", x);
+ err = -ENXIO;
+ goto free_ddt_mem_pool;
+ }
+
+ spin_lock_init(&priv->hw_lock);
+ spacc_irq_glbl_disable(&priv->spacc);
+ tasklet_init(&priv->pop_jobs, spacc_pop_jobs, (unsigned long)priv);
+
+ priv->spacc.dptr = &pdev->dev;
+ platform_set_drvdata(pdev, priv);
+
+ irq_num = platform_get_irq(pdev, 0);
+ if (irq_num < 0) {
+ dev_err(&pdev->dev, "no irq resource for spacc\n");
+ err = -ENXIO;
+ goto free_ddt_mem_pool;
+ }
+
+ /* Determine configured maximum message length. */
+ priv->max_msg_len = priv->spacc.config.max_msg_size;
+
+ if (devm_request_irq(&pdev->dev, irq_num, spacc_irq_handler,
+ IRQF_SHARED, dev_name(&pdev->dev),
+ &pdev->dev)) {
+ dev_err(&pdev->dev, "failed to request IRQ\n");
+ err = -EBUSY;
+ goto err_tasklet_kill;
+ }
+
+ priv->spacc.irq_cb_stat = spacc_stat_process;
+ priv->spacc.irq_cb_cmdx = spacc_cmd_process;
+ oldmode = priv->spacc.op_mode;
+ priv->spacc.op_mode = SPACC_OP_MODE_IRQ;
+
+ spacc_irq_stat_enable(&priv->spacc, 1);
+ spacc_irq_cmdx_enable(&priv->spacc, 0, 1);
+ spacc_irq_stat_wd_disable(&priv->spacc);
+ spacc_irq_glbl_enable(&priv->spacc);
+
+
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_AUTODETECT)
+ err = spacc_autodetect(&priv->spacc);
+ if (err < 0) {
+ spacc_irq_glbl_disable(&priv->spacc);
+ goto err_tasklet_kill;
+ }
+#else
+ err = spacc_static_config(&priv->spacc);
+ if (err < 0) {
+ spacc_irq_glbl_disable(&priv->spacc);
+ goto err_tasklet_kill;
+ }
+#endif
+
+ priv->spacc.op_mode = oldmode;
+
+ if (priv->spacc.op_mode == SPACC_OP_MODE_IRQ) {
+ priv->spacc.irq_cb_stat = spacc_stat_process;
+ priv->spacc.irq_cb_cmdx = spacc_cmd_process;
+
+ spacc_irq_stat_enable(&priv->spacc, 1);
+ spacc_irq_cmdx_enable(&priv->spacc, 0, 1);
+ spacc_irq_glbl_enable(&priv->spacc);
+ } else {
+ priv->spacc.irq_cb_stat = spacc_stat_process;
+ priv->spacc.irq_cb_stat_wd = spacc_stat_process;
+
+ spacc_irq_stat_enable(&priv->spacc,
+ priv->spacc.config.ideal_stat_level);
+
+ spacc_irq_cmdx_disable(&priv->spacc, 0);
+ spacc_irq_stat_wd_enable(&priv->spacc);
+ spacc_irq_glbl_enable(&priv->spacc);
+
+ /* enable the wd by setting the wd_timer = 100000 */
+ spacc_set_wd_count(&priv->spacc,
+ priv->spacc.config.wd_timer =
+ priv->spacc.config.timer);
+ }
+
+ /* unlock normal*/
+ if (priv->spacc.config.is_secure_port) {
+ u32 t;
+
+ t = readl(baseaddr + SPACC_REG_SECURE_CTRL);
+ t &= ~(1UL << 31);
+ writel(t, baseaddr + SPACC_REG_SECURE_CTRL);
+ }
+
+ /* unlock device by default */
+ writel(0, baseaddr + SPACC_REG_SECURE_CTRL);
+
+ return err;
+
+err_tasklet_kill:
+ tasklet_kill(&priv->pop_jobs);
+ spacc_fini(&priv->spacc);
+
+free_ddt_mem_pool:
+ pdu_mem_deinit(&pdev->dev);
+
+ return err;
+}
+
+static void spacc_unregister_algs(void)
+{
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_HASH)
+ spacc_unregister_hash_algs();
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_AEAD)
+ spacc_unregister_aead_algs();
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_CIPHER)
+ spacc_unregister_cipher_algs();
+#endif
+}
+
+static const struct of_device_id snps_spacc_id[] = {
+ {.compatible = "snps-dwc-spacc" },
+ { /*sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, snps_spacc_id);
+
+static int spacc_crypto_probe(struct platform_device *pdev)
+{
+ int rc;
+
+ rc = spacc_probe(pdev, snps_spacc_id);
+ if (rc < 0)
+ goto err;
+
+ spacc_pdev[0] = pdev;
+
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_HASH)
+ rc = probe_hashes(pdev);
+ if (rc < 0)
+ goto err;
+#endif
+
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_CIPHER)
+ rc = probe_ciphers(pdev);
+ if (rc < 0)
+ goto err;
+#endif
+
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_AEAD)
+ rc = probe_aeads(pdev);
+ if (rc < 0)
+ goto err;
+#endif
+
+ return 0;
+err:
+ spacc_unregister_algs();
+
+ return rc;
+}
+
+static int spacc_crypto_remove(struct platform_device *pdev)
+{
+ spacc_unregister_algs();
+ spacc_remove(pdev);
+
+ return 0;
+}
+
+static struct platform_driver spacc_driver = {
+ .probe = spacc_crypto_probe,
+ .remove = spacc_crypto_remove,
+ .driver = {
+ .name = "spacc",
+ .of_match_table = of_match_ptr(snps_spacc_id),
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(spacc_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Synopsys, Inc.");
new file mode 100644
@@ -0,0 +1,236 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef SPACC_DEVICE_H_
+#define SPACC_DEVICE_H_
+
+#include <crypto/hash.h>
+#include <crypto/ctr.h>
+#include <crypto/internal/aead.h>
+#include <linux/of.h>
+#include "spacc_core.h"
+
+#define MODE_TAB_AEAD(_name, _ciph, _hash, _hashlen, _ivlen, _blocklen) \
+ .name = _name, .aead = { .ciph = _ciph, .hash = _hash }, \
+ .hashlen = _hashlen, .ivlen = _ivlen, .blocklen = _blocklen
+
+/* Helper macros for initializing the hash/cipher tables. */
+#define MODE_TAB_COMMON(_name, _id_name, _blocklen) \
+ .name = _name, .id = CRYPTO_MODE_##_id_name, .blocklen = _blocklen
+
+#define MODE_TAB_HASH(_name, _id_name, _hashlen, _blocklen) \
+ MODE_TAB_COMMON(_name, _id_name, _blocklen), \
+ .hashlen = _hashlen, .testlen = _hashlen
+
+#define MODE_TAB_CIPH(_name, _id_name, _ivlen, _blocklen) \
+ MODE_TAB_COMMON(_name, _id_name, _blocklen), \
+ .ivlen = _ivlen
+
+#define MODE_TAB_HASH_XCBC 0x8000
+
+/* Max # of SPAcc devices to look at in our CAPI driver...*/
+#define ELP_CAPI_MAX_DEV 8
+
+#define SPACC_MAX_DIGEST_SIZE 64
+#define SPACC_MAX_KEY_SIZE 32
+#define SPACC_MAX_IV_SIZE 16
+
+#define SPACC_DMA_ALIGN 4
+#define SPACC_DMA_BOUNDARY 0x10000
+
+/* flag means the IV is computed from setkey and crypt*/
+#define SPACC_MANGLE_IV_FLAG 0x8000
+
+/* we're doing a CTR mangle (for RFC3686/IPsec)*/
+#define SPACC_MANGLE_IV_RFC3686 0x0100
+
+/* we're doing GCM */
+#define SPACC_MANGLE_IV_RFC4106 0x0200
+
+/* we're doing GMAC */
+#define SPACC_MANGLE_IV_RFC4543 0x0300
+
+/* we're doing CCM */
+#define SPACC_MANGLE_IV_RFC4309 0x0400
+
+/* we're doing SM4 GCM/CCM */
+#define SPACC_MANGLE_IV_RFC8998 0x0500
+
+#define CRYPTO_MODE_AES_CTR_RFC3686 (CRYPTO_MODE_AES_CTR \
+ | SPACC_MANGLE_IV_FLAG \
+ | SPACC_MANGLE_IV_RFC3686)
+#define CRYPTO_MODE_AES_GCM_RFC4106 (CRYPTO_MODE_AES_GCM \
+ | SPACC_MANGLE_IV_FLAG \
+ | SPACC_MANGLE_IV_RFC4106)
+#define CRYPTO_MODE_AES_GCM_RFC4543 (CRYPTO_MODE_AES_GCM \
+ | SPACC_MANGLE_IV_FLAG \
+ | SPACC_MANGLE_IV_RFC4543)
+#define CRYPTO_MODE_AES_CCM_RFC4309 (CRYPTO_MODE_AES_CCM \
+ | SPACC_MANGLE_IV_FLAG \
+ | SPACC_MANGLE_IV_RFC4309)
+#define CRYPTO_MODE_SM4_GCM_RFC8998 (CRYPTO_MODE_SM4_GCM)
+#define CRYPTO_MODE_SM4_CCM_RFC8998 (CRYPTO_MODE_SM4_CCM)
+
+struct spacc_crypto_ctx {
+ struct device *dev;
+
+ spinlock_t lock;
+ struct list_head jobs;
+ int handle, mode, auth_size, key_len;
+ unsigned char *cipher_key;
+
+ /*
+ * Indicates that the H/W context has been setup and can be used for
+ * crypto; otherwise, the software fallback will be used.
+ */
+ bool ctx_valid;
+ unsigned int flag_ppp;
+
+ /* salt used for rfc3686/givencrypt mode */
+ unsigned char csalt[16];
+ u8 ipad[128] __aligned(sizeof(u32));
+ u8 digest_ctx_buf[128] __aligned(sizeof(u32));
+ u8 ppp_buffer[128] __aligned(sizeof(u32));
+
+ /* Save keylen from setkey */
+ int keylen;
+ u8 key[256];
+ int zero_key;
+ unsigned char *ppp_sgl_buff;
+ struct scatterlist *ppp_sgl;
+
+ union{
+ struct crypto_ahash *hash;
+ struct crypto_aead *aead;
+ struct crypto_skcipher *cipher;
+ } fb;
+};
+
+struct spacc_crypto_reqctx {
+ struct pdu_ddt src, dst;
+ void *digest_buf, *iv_buf;
+ dma_addr_t digest_dma, iv_dma;
+ int fulliv_nents, ptext_nents, iv_nents;
+ int dst_nents, assoc_nents, src_nents;
+ int total_nents, single_shot, small_pck, cur_part_pck, final_part_pck;
+ int encrypt_op, mode;
+ unsigned int head_sg, tail_sg, rem_len, rem_nents, first_ppp_chunk;
+ unsigned int crypt_len;
+
+ struct aead_cb_data {
+ int new_handle;
+ struct spacc_crypto_ctx *tctx;
+ struct spacc_crypto_reqctx *ctx;
+ struct aead_request *req;
+ struct spacc_device *spacc;
+ } cb;
+
+ struct ahash_cb_data {
+ int new_handle;
+ struct spacc_crypto_ctx *tctx;
+ struct spacc_crypto_reqctx *ctx;
+ struct ahash_request *req;
+ struct spacc_device *spacc;
+ } acb;
+
+ struct cipher_cb_data {
+ int new_handle;
+ struct spacc_crypto_ctx *tctx;
+ struct spacc_crypto_reqctx *ctx;
+ struct skcipher_request *req;
+ struct spacc_device *spacc;
+ } ccb;
+
+ union {
+ struct ahash_request hash_req;
+ struct skcipher_request cipher_req;
+ struct aead_request aead_req;
+ } fb;
+};
+
+struct mode_tab {
+ char name[128];
+
+ int valid;
+
+ /* mode ID used in hash/cipher mode but not aead*/
+ int id;
+
+ /* ciph/hash mode used in aead */
+ struct {
+ int ciph, hash;
+ } aead;
+
+ unsigned int hashlen, ivlen, blocklen, keylen[3];
+ unsigned int keylen_mask, testlen;
+ unsigned int chunksize, walksize, min_keysize, max_keysize;
+
+ bool sw_fb;
+
+ union {
+ unsigned char hash_test[SPACC_MAX_DIGEST_SIZE];
+ unsigned char ciph_test[3][2 * SPACC_MAX_IV_SIZE];
+ };
+};
+
+struct spacc_alg {
+ struct mode_tab *mode;
+ unsigned int keylen_mask;
+
+ struct device *dev[ELP_CAPI_MAX_DEV + 1];
+
+ struct list_head list;
+ struct crypto_alg *calg;
+ struct crypto_tfm *tfm;
+
+ union {
+ struct ahash_alg hash;
+ struct aead_alg aead;
+ struct skcipher_alg skcipher;
+ } alg;
+};
+
+static inline const struct spacc_alg *spacc_tfm_ahash(struct crypto_tfm *tfm)
+{
+ const struct crypto_alg *calg = tfm->__crt_alg;
+
+ if ((calg->cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_AHASH)
+ return container_of(calg, struct spacc_alg, alg.hash.halg.base);
+
+ return NULL;
+}
+
+static inline const struct spacc_alg *spacc_tfm_skcipher(struct crypto_tfm *tfm)
+{
+ const struct crypto_alg *calg = tfm->__crt_alg;
+
+ if ((calg->cra_flags & CRYPTO_ALG_TYPE_MASK) ==
+ CRYPTO_ALG_TYPE_SKCIPHER)
+ return container_of(calg, struct spacc_alg, alg.skcipher.base);
+
+ return NULL;
+}
+
+static inline const struct spacc_alg *spacc_tfm_aead(struct crypto_tfm *tfm)
+{
+ const struct crypto_alg *calg = tfm->__crt_alg;
+
+ if ((calg->cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_AEAD)
+ return container_of(calg, struct spacc_alg, alg.aead.base);
+
+ return NULL;
+}
+
+int probe_hashes(struct platform_device *spacc_pdev);
+int spacc_unregister_hash_algs(void);
+
+int probe_aeads(struct platform_device *spacc_pdev);
+int spacc_unregister_aead_algs(void);
+
+int probe_ciphers(struct platform_device *spacc_pdev);
+int spacc_unregister_cipher_algs(void);
+
+int spacc_probe(struct platform_device *pdev,
+ const struct of_device_id snps_spacc_id[]);
+
+irqreturn_t spacc_irq_handler(int irq, void *dev);
+#endif
new file mode 100644
@@ -0,0 +1,367 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/dmapool.h>
+#include <linux/dma-mapping.h>
+#include "spacc_hal.h"
+
+static struct dma_pool *ddt_pool, *ddt16_pool, *ddt4_pool;
+static struct device *ddt_device;
+
+#define PDU_REG_SPACC_VERSION 0x00180UL
+#define PDU_REG_SPACC_CONFIG 0x00184UL
+#define PDU_REG_SPACC_CONFIG2 0x00190UL
+#define PDU_REG_SPACC_IV_OFFSET 0x00040UL
+#define PDU_REG_PDU_CONFIG 0x00188UL
+#define PDU_REG_SECURE_LOCK 0x001C0UL
+
+int pdu_get_version(void __iomem *dev, struct pdu_info *inf)
+{
+ unsigned long tmp;
+
+ if (!inf)
+ return -1;
+
+ memset(inf, 0, sizeof(*inf));
+ tmp = readl(dev + PDU_REG_SPACC_VERSION);
+
+ /* Read the SPAcc version block this tells us the revision,
+ * project, and a few other feature bits
+ *
+ * layout for v6.5+
+ */
+ inf->spacc_version = (struct spacc_version_block) {
+ .minor = SPACC_ID_MINOR(tmp),
+ .major = SPACC_ID_MAJOR(tmp),
+ .version = (SPACC_ID_MAJOR(tmp) << 4) | SPACC_ID_MINOR(tmp),
+ .qos = SPACC_ID_QOS(tmp),
+ .is_spacc = SPACC_ID_TYPE(tmp) == SPACC_TYPE_SPACCQOS,
+ .is_pdu = SPACC_ID_TYPE(tmp) == SPACC_TYPE_PDU,
+ .aux = SPACC_ID_AUX(tmp),
+ .vspacc_idx = SPACC_ID_VIDX(tmp),
+ .partial = SPACC_ID_PARTIAL(tmp),
+ .project = SPACC_ID_PROJECT(tmp),
+ };
+
+ /* try to autodetect */
+ writel(0x80000000, dev + PDU_REG_SPACC_IV_OFFSET);
+
+ if (readl(dev + PDU_REG_SPACC_IV_OFFSET) == 0x80000000)
+ inf->spacc_version.ivimport = 1;
+ else
+ inf->spacc_version.ivimport = 0;
+
+
+ /* Read the SPAcc config block (v6.5+) which tells us how many
+ * contexts there are and context page sizes
+ * this register is only available in v6.5 and up
+ */
+ tmp = readl(dev + PDU_REG_SPACC_CONFIG);
+ inf->spacc_config = (struct spacc_config_block) {
+ SPACC_CFG_CTX_CNT(tmp),
+ SPACC_CFG_VSPACC_CNT(tmp),
+ SPACC_CFG_CIPH_CTX_SZ(tmp),
+ SPACC_CFG_HASH_CTX_SZ(tmp),
+ SPACC_CFG_DMA_TYPE(tmp),
+ 0, 0, 0, 0
+ };
+
+ /* CONFIG2 only present in v6.5+ cores */
+ tmp = readl(dev + PDU_REG_SPACC_CONFIG2);
+ if (inf->spacc_version.qos) {
+ inf->spacc_config.cmd0_fifo_depth =
+ SPACC_CFG_CMD0_FIFO_QOS(tmp);
+ inf->spacc_config.cmd1_fifo_depth =
+ SPACC_CFG_CMD1_FIFO(tmp);
+ inf->spacc_config.cmd2_fifo_depth =
+ SPACC_CFG_CMD2_FIFO(tmp);
+ inf->spacc_config.stat_fifo_depth =
+ SPACC_CFG_STAT_FIFO_QOS(tmp);
+ } else {
+ inf->spacc_config.cmd0_fifo_depth =
+ SPACC_CFG_CMD0_FIFO(tmp);
+ inf->spacc_config.stat_fifo_depth =
+ SPACC_CFG_STAT_FIFO(tmp);
+ }
+
+ /* only read PDU config if it's actually a PDU engine */
+ if (inf->spacc_version.is_pdu) {
+ tmp = readl(dev + PDU_REG_PDU_CONFIG);
+ inf->pdu_config = (struct pdu_config_block)
+ {SPACC_PDU_CFG_MINOR(tmp),
+ SPACC_PDU_CFG_MAJOR(tmp)};
+
+ /* unlock all cores by default */
+ writel(0, dev + PDU_REG_SECURE_LOCK);
+ }
+
+ return 0;
+}
+
+void pdu_to_dev(void __iomem *addr_, uint32_t *src, unsigned long nword)
+{
+ void __iomem *addr = addr_;
+
+ while (nword--) {
+ writel(*src++, addr);
+ addr += 4;
+ }
+}
+
+void pdu_from_dev(u32 *dst, void __iomem *addr_, unsigned long nword)
+{
+ void __iomem *addr = addr_;
+
+ while (nword--) {
+ *dst++ = readl(addr);
+ addr += 4;
+ }
+}
+
+static void pdu_to_dev_big(void __iomem *addr_, const unsigned char *src,
+ unsigned long nword)
+{
+ unsigned long v;
+ void __iomem *addr = addr_;
+
+ while (nword--) {
+ v = 0;
+ v = (v << 8) | ((unsigned long)*src++);
+ v = (v << 8) | ((unsigned long)*src++);
+ v = (v << 8) | ((unsigned long)*src++);
+ v = (v << 8) | ((unsigned long)*src++);
+ writel(v, addr);
+ addr += 4;
+ }
+}
+
+static void pdu_from_dev_big(unsigned char *dst, void __iomem *addr_,
+ unsigned long nword)
+{
+ unsigned long v;
+ void __iomem *addr = addr_;
+
+ while (nword--) {
+ v = readl(addr);
+ addr += 4;
+ *dst++ = (v >> 24) & 0xFF; v <<= 8;
+ *dst++ = (v >> 24) & 0xFF; v <<= 8;
+ *dst++ = (v >> 24) & 0xFF; v <<= 8;
+ *dst++ = (v >> 24) & 0xFF; v <<= 8;
+ }
+}
+
+static void pdu_to_dev_little(void __iomem *addr_, const unsigned char *src,
+ unsigned long nword)
+{
+ unsigned long v;
+ void __iomem *addr = addr_;
+
+ while (nword--) {
+ v = 0;
+ v = (v >> 8) | ((unsigned long)*src++ << 24UL);
+ v = (v >> 8) | ((unsigned long)*src++ << 24UL);
+ v = (v >> 8) | ((unsigned long)*src++ << 24UL);
+ v = (v >> 8) | ((unsigned long)*src++ << 24UL);
+ writel(v, addr);
+ addr += 4;
+ }
+}
+
+static void pdu_from_dev_little(unsigned char *dst, void __iomem *addr_, unsigned long
+ nword)
+{
+ unsigned long v;
+ void __iomem *addr = addr_;
+
+ while (nword--) {
+ v = readl(addr);
+ addr += 4;
+ *dst++ = v & 0xFF; v >>= 8;
+ *dst++ = v & 0xFF; v >>= 8;
+ *dst++ = v & 0xFF; v >>= 8;
+ *dst++ = v & 0xFF; v >>= 8;
+ }
+}
+
+void pdu_to_dev_s(void __iomem *addr, const unsigned char *src,
+ unsigned long nword, int endian)
+{
+ if (endian)
+ pdu_to_dev_big(addr, src, nword);
+ else
+ pdu_to_dev_little(addr, src, nword);
+}
+
+void pdu_from_dev_s(unsigned char *dst, void __iomem *addr,
+ unsigned long nword, int endian)
+{
+ if (endian)
+ pdu_from_dev_big(dst, addr, nword);
+ else
+ pdu_from_dev_little(dst, addr, nword);
+}
+
+void pdu_io_cached_write(void __iomem *addr, unsigned long val,
+ uint32_t *cache)
+{
+ if (*cache == val) {
+#ifdef CONFIG_CRYPTO_DEV_SPACC_DEBUG_TRACE_IO
+ pr_debug("PDU: write %.8lx -> %p (cached)\n", val, addr);
+#endif
+ return;
+ }
+
+ *cache = val;
+ writel(val, addr);
+}
+
+struct device *get_ddt_device(void)
+{
+ return ddt_device;
+}
+
+/* Platform specific DDT routines */
+
+/* create a DMA pool for DDT entries this should help from splitting
+ * pages for DDTs which by default are 520 bytes long meaning we would
+ * otherwise waste 3576 bytes per DDT allocated...
+ * we also maintain a smaller table of 4 entries common for simple jobs
+ * which uses 480 fewer bytes of DMA memory.
+ * and for good measure another table for 16 entries saving 384 bytes
+ */
+int pdu_mem_init(void *device)
+{
+ if (ddt_device)
+ return 0; /* Already setup */
+
+ ddt_device = device;
+ ddt_pool = dma_pool_create("spaccddt", device, (PDU_MAX_DDT + 1) * 8,
+ 8, 0); /* max of 64 DDT entries */
+
+ if (!ddt_pool)
+ return -1;
+
+#if PDU_MAX_DDT > 16
+ /* max of 16 DDT entries */
+ ddt16_pool = dma_pool_create("spaccddt16", device, (16 + 1) * 8, 8, 0);
+ if (!ddt16_pool) {
+ dma_pool_destroy(ddt_pool);
+ return -1;
+ }
+#else
+ ddt16_pool = ddt_pool;
+#endif
+ /* max of 4 DDT entries */
+ ddt4_pool = dma_pool_create("spaccddt4", device, (4 + 1) * 8, 8, 0);
+ if (!ddt4_pool) {
+ dma_pool_destroy(ddt_pool);
+#if PDU_MAX_DDT > 16
+ dma_pool_destroy(ddt16_pool);
+#endif
+ return -1;
+ }
+
+ return 0;
+}
+
+/* destroy the pool */
+void pdu_mem_deinit(void *device)
+{
+ /* For now, just skip deinit except for matching device */
+ if (device != ddt_device)
+ return;
+
+ dma_pool_destroy(ddt_pool);
+
+#if PDU_MAX_DDT > 16
+ dma_pool_destroy(ddt16_pool);
+#endif
+ dma_pool_destroy(ddt4_pool);
+
+ ddt_device = NULL;
+}
+
+int pdu_ddt_init(struct pdu_ddt *ddt, unsigned long limit)
+{
+ /* set the MSB if we want to use an ATOMIC
+ * allocation required for top half processing
+ */
+ int flag = (limit & 0x80000000);
+
+ limit &= 0x7FFFFFFF;
+ if (limit + 1 >= SIZE_MAX / 8) {
+ /* Too big to even compute DDT size */
+ return -1;
+ } else if (limit > PDU_MAX_DDT) {
+ size_t len = 8 * ((size_t)limit + 1);
+
+ ddt->virt = dma_alloc_coherent(ddt_device, len, &ddt->phys,
+ flag ? GFP_ATOMIC : GFP_KERNEL);
+ } else if (limit > 16) {
+ ddt->virt = dma_pool_alloc(ddt_pool, flag ? GFP_ATOMIC :
+ GFP_KERNEL, &ddt->phys);
+ } else if (limit > 4) {
+ ddt->virt = dma_pool_alloc(ddt16_pool, flag ? GFP_ATOMIC :
+ GFP_KERNEL, &ddt->phys);
+ } else {
+ ddt->virt = dma_pool_alloc(ddt4_pool, flag ? GFP_ATOMIC :
+ GFP_KERNEL, &ddt->phys);
+ }
+
+ ddt->idx = 0;
+ ddt->len = 0;
+ ddt->limit = limit;
+
+ if (!ddt->virt)
+ return -1;
+
+#ifdef CONFIG_CRYPTO_DEV_SPACC_DEBUG_TRACE_DDT
+ pr_debug(" DDT[%.8lx]: allocated %lu fragments\n",
+ (unsigned long)ddt->phys, limit);
+#endif
+
+ return 0;
+}
+
+int pdu_ddt_add(struct pdu_ddt *ddt, dma_addr_t phys, unsigned long size)
+{
+#ifdef CONFIG_CRYPTO_DEV_SPACC_DEBUG_TRACE_DDT
+ pr_debug(" DDT[%.8lx]: 0x%.8lx size %lu\n",
+ (unsigned long)ddt->phys,
+ (unsigned long)phys, size);
+#endif
+
+ if (ddt->idx == ddt->limit)
+ return -1;
+
+ ddt->virt[ddt->idx * 2 + 0] = (uint32_t)phys;
+ ddt->virt[ddt->idx * 2 + 1] = size;
+ ddt->virt[ddt->idx * 2 + 2] = 0;
+ ddt->virt[ddt->idx * 2 + 3] = 0;
+ ddt->len += size;
+ ++(ddt->idx);
+
+ return 0;
+}
+
+int pdu_ddt_free(struct pdu_ddt *ddt)
+{
+ if (ddt->virt) {
+ if (ddt->limit > PDU_MAX_DDT) {
+ size_t len = 8 * ((size_t)ddt->limit + 1);
+
+ dma_free_coherent(ddt_device, len, ddt->virt,
+ ddt->phys);
+ } else if (ddt->limit > 16) {
+ dma_pool_free(ddt_pool, ddt->virt, ddt->phys);
+ } else if (ddt->limit > 4) {
+ dma_pool_free(ddt16_pool, ddt->virt, ddt->phys);
+ } else {
+ dma_pool_free(ddt4_pool, ddt->virt, ddt->phys);
+ }
+
+ ddt->virt = NULL;
+ }
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef SPACC_HAL_H
+#define SPACC_HAL_H
+
+/* Maximum number of DDT entries allowed*/
+#ifndef PDU_MAX_DDT
+#define PDU_MAX_DDT 64
+#endif
+
+/* Platform Generic */
+#define PDU_IRQ_EN_GLBL BIT(31)
+#define PDU_IRQ_EN_VSPACC(x) (1UL << (x))
+#define PDU_IRQ_EN_RNG BIT(16)
+
+#ifndef SPACC_ID_MINOR
+ #define SPACC_ID_MINOR(x) ((x) & 0x0F)
+ #define SPACC_ID_MAJOR(x) (((x) >> 4) & 0x0F)
+ #define SPACC_ID_QOS(x) (((x) >> 8) & 0x01)
+ #define SPACC_ID_TYPE(x) (((x) >> 9) & 0x03)
+ #define SPACC_ID_AUX(x) (((x) >> 11) & 0x01)
+ #define SPACC_ID_VIDX(x) (((x) >> 12) & 0x07)
+ #define SPACC_ID_PARTIAL(x) (((x) >> 15) & 0x01)
+ #define SPACC_ID_PROJECT(x) ((x) >> 16)
+
+ #define SPACC_TYPE_SPACCQOS 0
+ #define SPACC_TYPE_PDU 1
+
+ #define SPACC_CFG_CTX_CNT(x) ((x) & 0x7F)
+ #define SPACC_CFG_RC4_CTX_CNT(x) (((x) >> 8) & 0x7F)
+ #define SPACC_CFG_VSPACC_CNT(x) (((x) >> 16) & 0x0F)
+ #define SPACC_CFG_CIPH_CTX_SZ(x) (((x) >> 20) & 0x07)
+ #define SPACC_CFG_HASH_CTX_SZ(x) (((x) >> 24) & 0x0F)
+ #define SPACC_CFG_DMA_TYPE(x) (((x) >> 28) & 0x03)
+
+ #define SPACC_CFG_CMD0_FIFO_QOS(x) (((x) >> 0) & 0x7F)
+ #define SPACC_CFG_CMD0_FIFO(x) (((x) >> 0) & 0x1FF)
+ #define SPACC_CFG_CMD1_FIFO(x) (((x) >> 8) & 0x7F)
+ #define SPACC_CFG_CMD2_FIFO(x) (((x) >> 16) & 0x7F)
+ #define SPACC_CFG_STAT_FIFO_QOS(x) (((x) >> 24) & 0x7F)
+ #define SPACC_CFG_STAT_FIFO(x) (((x) >> 16) & 0x1FF)
+
+ #define SPACC_PDU_CFG_MINOR(x) ((x) & 0x0F)
+ #define SPACC_PDU_CFG_MAJOR(x) (((x) >> 4) & 0x0F)
+
+ #define PDU_SECURE_LOCK_SPACC(x) (x)
+ #define PDU_SECURE_LOCK_CFG BIT(30)
+ #define PDU_SECURE_LOCK_GLBL BIT(31)
+#endif /* SPACC_ID_MINOR */
+
+#define CRYPTO_OK (0)
+
+struct spacc_version_block {
+ unsigned int minor,
+ major,
+ version,
+ qos,
+ is_spacc,
+ is_pdu,
+ aux,
+ vspacc_idx,
+ partial,
+ project,
+ ivimport;
+};
+
+struct spacc_config_block {
+ unsigned int num_ctx,
+ num_vspacc,
+ ciph_ctx_page_size,
+ hash_ctx_page_size,
+ dma_type,
+ cmd0_fifo_depth,
+ cmd1_fifo_depth,
+ cmd2_fifo_depth,
+ stat_fifo_depth;
+};
+
+struct pdu_config_block {
+ unsigned int minor,
+ major;
+};
+
+struct pdu_info {
+ u32 clockrate;
+ struct spacc_version_block spacc_version;
+ struct spacc_config_block spacc_config;
+ struct pdu_config_block pdu_config;
+};
+
+struct pdu_ddt {
+ dma_addr_t phys;
+ u32 *virt;
+ u32 *virt_orig;
+ unsigned long idx, limit, len;
+};
+
+void pdu_io_cached_write(void __iomem *addr, unsigned long val, uint32_t *cache);
+void pdu_to_dev(void __iomem *addr, uint32_t *src, unsigned long nword);
+void pdu_from_dev(u32 *dst, void __iomem *addr, unsigned long nword);
+void pdu_from_dev_s(unsigned char *dst, void __iomem *addr, unsigned long nword,
+ int endian);
+void pdu_to_dev_s(void __iomem *addr, const unsigned char *src, unsigned long nword,
+ int endian);
+struct device *get_ddt_device(void);
+int pdu_mem_init(void *device);
+void pdu_mem_deinit(void *device);
+int pdu_ddt_init(struct pdu_ddt *ddt, unsigned long limit);
+int pdu_ddt_add(struct pdu_ddt *ddt, dma_addr_t phys, unsigned long size);
+int pdu_ddt_free(struct pdu_ddt *ddt);
+int pdu_get_version(void __iomem *dev, struct pdu_info *inf);
+
+#endif
new file mode 100644
@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include "spacc_core.h"
+
+/* Read the IRQ status register and process as needed */
+
+
+void spacc_disable_int (struct spacc_device *spacc);
+
+static inline uint32_t _spacc_get_stat_cnt(struct spacc_device *spacc)
+{
+ u32 fifo;
+
+ if (spacc->config.is_qos)
+ fifo = SPACC_FIFO_STAT_STAT_CNT_GET_QOS(readl(spacc->regmap +
+ SPACC_REG_FIFO_STAT));
+ else
+ fifo = SPACC_FIFO_STAT_STAT_CNT_GET(readl(spacc->regmap +
+ SPACC_REG_FIFO_STAT));
+
+ return fifo;
+}
+
+static int spacc_pop_packets_ex(struct spacc_device *spacc, int *num_popped,
+ unsigned long *lock_flag)
+{
+ int jobs;
+ int ret = -EINPROGRESS;
+ struct spacc_job *job = NULL;
+ u32 cmdstat, swid, spacc_errcode = SPACC_OK;
+
+ *num_popped = 0;
+
+ while ((jobs = _spacc_get_stat_cnt(spacc))) {
+ while (jobs-- > 0) {
+ /* write the pop register to get the next job */
+ writel(1, spacc->regmap + SPACC_REG_STAT_POP);
+ cmdstat = readl(spacc->regmap + SPACC_REG_STATUS);
+
+ swid = SPACC_STATUS_SW_ID_GET(cmdstat);
+
+ if (spacc->job_lookup[swid] == SPACC_JOB_IDX_UNUSED) {
+ ret = -EIO;
+ goto ERR;
+ }
+
+ /* find the associated job with popped swid */
+ if (swid < 0 || swid >= SPACC_MAX_JOBS)
+ job = NULL;
+ else
+ job = &spacc->job[spacc->job_lookup[swid]];
+
+ if (!job) {
+ ret = -EIO;
+ goto ERR;
+ }
+
+ /* mark job as done */
+ job->job_done = 1;
+ spacc->job_lookup[swid] = SPACC_JOB_IDX_UNUSED;
+ spacc_errcode = SPACC_GET_STATUS_RET_CODE(cmdstat);
+
+ switch (spacc_errcode) {
+ case SPACC_ICVFAIL:
+ ret = -EBADMSG;
+ break;
+ case SPACC_MEMERR:
+ ret = -EINVAL;
+ break;
+ case SPACC_BLOCKERR:
+ ret = -EINVAL;
+ break;
+ case SPACC_SECERR:
+ ret = -EIO;
+ break;
+ case SPACC_OK:
+ ret = CRYPTO_OK;
+ break;
+ default:
+ pr_debug("Invalid SPAcc Error");
+ }
+
+ job->job_err = ret;
+
+ /*
+ * We're done touching the SPAcc hw, so release the
+ * lock across the job callback. It must be reacquired
+ * before continuing to the next iteration.
+ */
+
+ if (job->cb) {
+ spin_unlock_irqrestore(&spacc->lock,
+ *lock_flag);
+ job->cb(spacc, job->cbdata);
+ spin_lock_irqsave(&spacc->lock,
+ *lock_flag);
+ }
+
+ (*num_popped)++;
+ }
+ }
+
+ if (!*num_popped)
+ pr_debug(" Failed to pop a single job\n");
+
+ERR:
+ spacc_process_jb(spacc);
+
+ /* reset the WD timer to the original value*/
+ if (spacc->op_mode == SPACC_OP_MODE_WD)
+ spacc_set_wd_count(spacc, spacc->config.wd_timer);
+
+ if (*num_popped && spacc->spacc_notify_jobs)
+ spacc->spacc_notify_jobs(spacc);
+
+ return ret;
+}
+
+int spacc_pop_packets(struct spacc_device *spacc, int *num_popped)
+{
+ int err;
+ unsigned long lock_flag;
+
+ spin_lock_irqsave(&spacc->lock, lock_flag);
+ err = spacc_pop_packets_ex(spacc, num_popped, &lock_flag);
+ spin_unlock_irqrestore(&spacc->lock, lock_flag);
+
+ return err;
+}
+
+uint32_t spacc_process_irq(struct spacc_device *spacc)
+{
+ u32 temp;
+ int x, cmd_max;
+ unsigned long lock_flag;
+
+ spin_lock_irqsave(&spacc->lock, lock_flag);
+
+ temp = readl(spacc->regmap + SPACC_REG_IRQ_STAT);
+
+ /* clear interrupt pin and run registered callback */
+ if (temp & SPACC_IRQ_STAT_STAT) {
+ SPACC_IRQ_STAT_CLEAR_STAT(spacc);
+ if (spacc->op_mode == SPACC_OP_MODE_IRQ) {
+ spacc->config.fifo_cnt <<= 2;
+ if (spacc->config.fifo_cnt >=
+ spacc->config.stat_fifo_depth)
+ spacc->config.fifo_cnt =
+ spacc->config.stat_fifo_depth;
+
+ /* update fifo count to allow more stati to pile up*/
+ spacc_irq_stat_enable(spacc, spacc->config.fifo_cnt);
+ /* reenable CMD0 empty interrupt*/
+ spacc_irq_cmdx_enable(spacc, 0, 0);
+ }
+
+ if (spacc->irq_cb_stat)
+ spacc->irq_cb_stat(spacc);
+ }
+
+ /* Watchdog IRQ */
+ if (spacc->op_mode == SPACC_OP_MODE_WD) {
+ if (temp & SPACC_IRQ_STAT_STAT_WD) {
+ if (++spacc->wdcnt == SPACC_WD_LIMIT) {
+ /* this happens when you get too many IRQs that
+ * go unanswered
+ */
+ spacc_irq_stat_wd_disable(spacc);
+ /* we set the STAT CNT to 1 so that every job
+ * generates an IRQ now
+ */
+ spacc_irq_stat_enable(spacc, 1);
+ spacc->op_mode = SPACC_OP_MODE_IRQ;
+ } else if (spacc->config.wd_timer < (0xFFFFFFUL >> 4)) {
+ /* if the timer isn't too high lets bump it up
+ * a bit so as to give the IRQ a chance to
+ * reply
+ */
+ spacc_set_wd_count(spacc,
+ spacc->config.wd_timer << 4);
+ }
+
+ SPACC_IRQ_STAT_CLEAR_STAT_WD(spacc);
+ if (spacc->irq_cb_stat_wd)
+ spacc->irq_cb_stat_wd(spacc);
+ }
+ }
+
+ if (spacc->op_mode == SPACC_OP_MODE_IRQ) {
+ cmd_max = (spacc->config.is_qos ? SPACC_CMDX_MAX_QOS :
+ SPACC_CMDX_MAX);
+ for (x = 0; x < cmd_max; x++) {
+ if (temp & SPACC_IRQ_STAT_CMDX(x)) {
+ spacc->config.fifo_cnt = 1;
+ /* disable CMD0 interrupt since STAT=1 */
+ spacc_irq_cmdx_disable(spacc, x);
+ spacc_irq_stat_enable(spacc,
+ spacc->config.fifo_cnt);
+
+ SPACC_IRQ_STAT_CLEAR_CMDX(spacc, x);
+ /* run registered callback */
+ if (spacc->irq_cb_cmdx)
+ spacc->irq_cb_cmdx(spacc, x);
+ }
+ }
+ }
+
+ spin_unlock_irqrestore(&spacc->lock, lock_flag);
+
+ return temp;
+}
+
+void spacc_set_wd_count(struct spacc_device *spacc, uint32_t val)
+{
+ writel(val, spacc->regmap + SPACC_REG_STAT_WD_CTRL);
+}
+
+/* cmdx and cmdx_cnt depend on HW config
+ * cmdx can be 0, 1 or 2
+ * cmdx_cnt must be 2^6 or less
+ */
+void spacc_irq_cmdx_enable(struct spacc_device *spacc, int cmdx, int cmdx_cnt)
+{
+ u32 temp;
+
+ /* read the reg, clear the bit range and set the new value */
+ temp = readl(spacc->regmap + SPACC_REG_IRQ_CTRL) &
+ (~SPACC_IRQ_CTRL_CMDX_CNT_MASK(cmdx));
+ temp |= SPACC_IRQ_CTRL_CMDX_CNT_SET(cmdx, cmdx_cnt);
+
+ writel(temp | SPACC_IRQ_CTRL_CMDX_CNT_SET(cmdx, cmdx_cnt),
+ spacc->regmap + SPACC_REG_IRQ_CTRL);
+
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_CMD(cmdx),
+ spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_irq_cmdx_disable(struct spacc_device *spacc, int cmdx)
+{
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) &
+ (~SPACC_IRQ_EN_CMD(cmdx)), spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_irq_stat_enable(struct spacc_device *spacc, int stat_cnt)
+{
+ u32 temp;
+
+ temp = readl(spacc->regmap + SPACC_REG_IRQ_CTRL);
+ if (spacc->config.is_qos) {
+ temp &= (~SPACC_IRQ_CTRL_STAT_CNT_MASK_QOS);
+ temp |= SPACC_IRQ_CTRL_STAT_CNT_SET_QOS(stat_cnt);
+ } else {
+ temp &= (~SPACC_IRQ_CTRL_STAT_CNT_MASK);
+ temp |= SPACC_IRQ_CTRL_STAT_CNT_SET(stat_cnt);
+ }
+
+ writel(temp, spacc->regmap + SPACC_REG_IRQ_CTRL);
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_STAT,
+ spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_irq_stat_disable(struct spacc_device *spacc)
+{
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) & (~SPACC_IRQ_EN_STAT),
+ spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_irq_stat_wd_enable(struct spacc_device *spacc)
+{
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_STAT_WD,
+ spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_irq_stat_wd_disable(struct spacc_device *spacc)
+{
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) &
+ (~SPACC_IRQ_EN_STAT_WD), spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_irq_glbl_enable(struct spacc_device *spacc)
+{
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_GLBL,
+ spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_irq_glbl_disable(struct spacc_device *spacc)
+{
+ writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) & (~SPACC_IRQ_EN_GLBL),
+ spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+void spacc_disable_int (struct spacc_device *spacc)
+{
+ writel(0, spacc->regmap + SPACC_REG_IRQ_EN);
+}
+
+/* a function to run callbacks in the IRQ handler */
+irqreturn_t spacc_irq_handler(int irq, void *dev)
+{
+ struct spacc_priv *priv = platform_get_drvdata(to_platform_device(dev));
+ struct spacc_device *spacc = &priv->spacc;
+
+ if (spacc->config.oldtimer != spacc->config.timer) {
+ priv->spacc.config.wd_timer = spacc->config.timer;
+ spacc_set_wd_count(&priv->spacc, priv->spacc.config.wd_timer);
+ spacc->config.oldtimer = spacc->config.timer;
+ }
+
+ /* check irq flags and process as required */
+ if (!spacc_process_irq(spacc))
+ return IRQ_NONE;
+
+ return IRQ_HANDLED;
+}
new file mode 100644
@@ -0,0 +1,650 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "spacc_core.h"
+
+#define MIN(x, y) (((x) < (y)) ? (x) : (y))
+
+/* prevent reading past the end of the buffer */
+static void read_from_buf(unsigned char *dst, unsigned char *src,
+ int off, int n, int max)
+{
+ if (!dst)
+ return;
+
+ while (off < max && n) {
+ *dst++ = src[off++];
+ --n;
+ }
+}
+
+static void write_to_buf(unsigned char *dst, const unsigned char *src,
+ int off, int n, int len)
+{
+ if (!src)
+ return;
+
+ while (n && (off < len)) {
+ dst[off++] = *src++;
+ --n;
+ }
+}
+
+/* This function is not meant to be called directly,
+ * it should be called from the job manager
+ */
+static int spacc_ctx_request(struct spacc_device *spacc,
+ int ctx_id, int ncontig)
+{
+ int ret;
+ int x, y, count;
+ unsigned long lock_flag;
+
+ if (!spacc)
+ return -1;
+
+ if (ctx_id > spacc->config.num_ctx)
+ return -1;
+
+ if (ncontig < 1 || ncontig > spacc->config.num_ctx)
+ return -1;
+
+ ret = CRYPTO_OK;
+
+ spin_lock_irqsave(&spacc->ctx_lock, lock_flag);
+ /* allocating scheme, look for contiguous contexts. Free contexts have
+ * a ref_cnt of 0.
+ * If specific ctx_id is requested,
+ * test the ncontig and then bump the ref_cnt
+ */
+ if (ctx_id != -1) {
+ if ((&spacc->ctx[ctx_id])->ncontig != ncontig - 1)
+ ret = -1;
+ } else {
+ /* check to see if ncontig are free
+ * loop over all available contexts to find the first
+ * ncontig empty ones
+ */
+ for (x = 0; x <= (spacc->config.num_ctx - ncontig); ) {
+ count = ncontig;
+ while (count) {
+ if ((&spacc->ctx[x + count - 1])->ref_cnt != 0) {
+ /* incr x to past failed count
+ * location
+ */
+ x = x + count;
+ break;
+ }
+ count--;
+ }
+ if (count != 0) {
+ ret = -1;
+ /* test next x */
+ } else {
+ ctx_id = x;
+ ret = CRYPTO_OK;
+ break;
+ }
+ }
+ }
+
+ if (ret == CRYPTO_OK) {
+ /* ctx_id is good so mark used */
+ for (y = 0; y < ncontig; y++)
+ (&spacc->ctx[ctx_id + y])->ref_cnt++;
+ (&spacc->ctx[ctx_id])->ncontig = ncontig - 1;
+ } else {
+ ctx_id = -1;
+ }
+
+ spin_unlock_irqrestore(&spacc->ctx_lock, lock_flag);
+
+ return ctx_id;
+}
+
+static int spacc_ctx_release(struct spacc_device *spacc, int ctx_id)
+{
+ int y;
+ int ncontig;
+ unsigned long lock_flag;
+
+ if (ctx_id < 0 || ctx_id > spacc->config.num_ctx)
+ return -EINVAL;
+
+ spin_lock_irqsave(&spacc->ctx_lock, lock_flag);
+ /* release the base context and contiguous block */
+ ncontig = (&spacc->ctx[ctx_id])->ncontig;
+ for (y = 0; y <= ncontig; y++) {
+ if ((&spacc->ctx[ctx_id + y])->ref_cnt > 0)
+ (&spacc->ctx[ctx_id + y])->ref_cnt--;
+ }
+
+ if ((&spacc->ctx[ctx_id])->ref_cnt == 0) {
+ (&spacc->ctx[ctx_id])->ncontig = 0;
+#ifdef CONFIG_CRYPTO_DEV_SPACC_SECURE_MODE
+ /* TODO: This driver works in harmony with "normal" kernel
+ * processes so we release the context all the time
+ * normally this would be done from a "secure" kernel process
+ * (trustzone/etc). This hack is so that SPACC.0
+ * cores can both use the same context space.
+ */
+ writel(ctx_id, spacc->regmap + SPACC_REG_SECURE_RELEASE);
+#endif
+ }
+
+ spin_unlock_irqrestore(&spacc->ctx_lock, lock_flag);
+
+ return CRYPTO_OK;
+}
+
+/* Job manager: This will reset all job data, pointers, etc */
+void spacc_job_init_all(struct spacc_device *spacc)
+{
+ int x;
+ struct spacc_job *job;
+
+ for (x = 0; x < (SPACC_MAX_JOBS); x++) {
+ job = &spacc->job[x];
+ memset(job, 0, sizeof(struct spacc_job));
+
+ job->job_swid = SPACC_JOB_IDX_UNUSED;
+ job->job_used = SPACC_JOB_IDX_UNUSED;
+ spacc->job_lookup[x] = SPACC_JOB_IDX_UNUSED;
+ }
+}
+
+/* get a new job id and use a specific ctx_idx or -1 for a new one */
+int spacc_job_request(struct spacc_device *spacc, int ctx_idx)
+{
+ int x, ret;
+ struct spacc_job *job;
+ unsigned long lock_flag;
+
+ if (!spacc)
+ return -1;
+
+ spin_lock_irqsave(&spacc->lock, lock_flag);
+
+ /* find the first available job id */
+ for (x = 0; x < SPACC_MAX_JOBS; x++) {
+ job = &spacc->job[x];
+ if (job->job_used == SPACC_JOB_IDX_UNUSED) {
+ job->job_used = x;
+ break;
+ }
+ }
+
+ if (x == SPACC_MAX_JOBS) {
+ ret = -1;
+ } else {
+ /* associate a single context to go with job */
+ ret = spacc_ctx_request(spacc, ctx_idx, 1);
+ if (ret != -1) {
+ job->ctx_idx = ret;
+ ret = x;
+ }
+ }
+
+ spin_unlock_irqrestore(&spacc->lock, lock_flag);
+
+ return ret;
+}
+
+int spacc_job_release(struct spacc_device *spacc, int job_idx)
+{
+ int ret;
+ struct spacc_job *job;
+ unsigned long lock_flag;
+
+ if (!spacc)
+ return -EINVAL;
+
+ if (job_idx < 0 || job_idx >= SPACC_MAX_JOBS)
+ return -ENXIO;
+
+ spin_lock_irqsave(&spacc->lock, lock_flag);
+
+ job = &spacc->job[job_idx];
+ /* release context that goes with job */
+ ret = spacc_ctx_release(spacc, job->ctx_idx);
+ job->ctx_idx = SPACC_CTX_IDX_UNUSED;
+ job->job_used = SPACC_JOB_IDX_UNUSED;
+ /* disable any callback*/
+ job->cb = NULL;
+
+ /* NOTE: this leaves ctrl data in memory */
+ spin_unlock_irqrestore(&spacc->lock, lock_flag);
+
+ return ret;
+}
+
+int spacc_handle_release(struct spacc_device *spacc, int job_idx)
+{
+ int ret = 0;
+ struct spacc_job *job;
+ unsigned long lock_flag;
+
+ if (!spacc)
+ return -EINVAL;
+
+ if (job_idx < 0 || job_idx >= SPACC_MAX_JOBS)
+ return -ENXIO;
+
+ spin_lock_irqsave(&spacc->lock, lock_flag);
+
+ job = &spacc->job[job_idx];
+ job->job_used = SPACC_JOB_IDX_UNUSED;
+ job->cb = NULL; /* disable any callback*/
+
+ /* NOTE: this leaves ctrl data in memory */
+ spin_unlock_irqrestore(&spacc->lock, lock_flag);
+
+ return ret;
+}
+
+/* Return a context structure for a job idx or null if invalid */
+struct spacc_ctx *context_lookup_by_job(struct spacc_device *spacc, int job_idx)
+{
+ if (job_idx < 0 || job_idx >= SPACC_MAX_JOBS)
+ return NULL;
+
+ return &spacc->ctx[(&spacc->job[job_idx])->ctx_idx];
+}
+
+int spacc_process_jb(struct spacc_device *spacc)
+{
+ int tail, ret;
+
+ /* are there jobs in the buffer? */
+ while (spacc->jb_head != spacc->jb_tail) {
+ tail = spacc->jb_tail;
+
+ if (spacc->job_buffer[tail].active) {
+ ret = spacc_packet_enqueue_ddt_ex(spacc, 0,
+ spacc->job_buffer[tail].job_idx,
+ spacc->job_buffer[tail].src,
+ spacc->job_buffer[tail].dst,
+ spacc->job_buffer[tail].proc_sz,
+ spacc->job_buffer[tail].aad_offset,
+ spacc->job_buffer[tail].pre_aad_sz,
+ spacc->job_buffer[tail].post_aad_sz,
+ spacc->job_buffer[tail].iv_offset,
+ spacc->job_buffer[tail].prio);
+
+ if (ret != -EBUSY)
+ spacc->job_buffer[tail].active = 0;
+ else
+ return -1;
+ }
+
+ tail++;
+ if (tail == SPACC_MAX_JOB_BUFFERS)
+ tail = 0;
+
+ spacc->jb_tail = tail;
+ }
+
+ return 0;
+}
+
+/* Write appropriate context data which depends on operation and mode */
+int spacc_write_context(struct spacc_device *spacc, int job_idx, int op,
+ const unsigned char *key, int ksz,
+ const unsigned char *iv, int ivsz)
+{
+ int buflen;
+ int ret = CRYPTO_OK;
+ unsigned char buf[300];
+ struct spacc_ctx *ctx = NULL;
+ struct spacc_job *job = NULL;
+
+ if (job_idx < 0 || job_idx > SPACC_MAX_JOBS)
+ return -ENXIO;
+
+ job = &spacc->job[job_idx];
+ ctx = context_lookup_by_job(spacc, job_idx);
+
+ if (!job || !ctx)
+ return -EIO;
+
+ switch (op) {
+ case SPACC_CRYPTO_OPERATION:
+ /* get page size and then read so we can do a
+ * read-modify-write cycle
+ */
+ buflen = MIN(sizeof(buf),
+ (unsigned int)spacc->config.ciph_page_size);
+
+ pdu_from_dev_s(buf, ctx->ciph_key, buflen >> 2,
+ spacc->config.spacc_endian);
+
+ switch (job->enc_mode) {
+ case CRYPTO_MODE_SM4_ECB:
+ case CRYPTO_MODE_SM4_CBC:
+ case CRYPTO_MODE_SM4_CFB:
+ case CRYPTO_MODE_SM4_OFB:
+ case CRYPTO_MODE_SM4_CTR:
+ case CRYPTO_MODE_SM4_CCM:
+ case CRYPTO_MODE_SM4_GCM:
+ case CRYPTO_MODE_SM4_CS1:
+ case CRYPTO_MODE_SM4_CS2:
+ case CRYPTO_MODE_SM4_CS3:
+ case CRYPTO_MODE_AES_ECB:
+ case CRYPTO_MODE_AES_CBC:
+ case CRYPTO_MODE_AES_CS1:
+ case CRYPTO_MODE_AES_CS2:
+ case CRYPTO_MODE_AES_CS3:
+ case CRYPTO_MODE_AES_CFB:
+ case CRYPTO_MODE_AES_OFB:
+ case CRYPTO_MODE_AES_CTR:
+ case CRYPTO_MODE_AES_CCM:
+ case CRYPTO_MODE_AES_GCM:
+ write_to_buf(buf, key, 0, ksz, buflen);
+ if (iv) {
+ unsigned char one[4] = { 0, 0, 0, 1 };
+ unsigned long enc1, enc2;
+
+ enc1 = CRYPTO_MODE_AES_GCM;
+ enc2 = CRYPTO_MODE_SM4_GCM;
+
+ write_to_buf(buf, iv, 32, ivsz, buflen);
+ if (ivsz == 12 &&
+ (job->enc_mode == enc1 ||
+ job->enc_mode == enc2))
+ write_to_buf(buf, one, 11 * 4, 4,
+ buflen);
+ }
+ break;
+ case CRYPTO_MODE_SM4_F8:
+ case CRYPTO_MODE_AES_F8:
+ if (key) {
+ write_to_buf(buf, key + ksz, 0, ksz, buflen);
+ write_to_buf(buf, key, 48, ksz, buflen);
+ }
+ write_to_buf(buf, iv, 32, 16, buflen);
+ break;
+ case CRYPTO_MODE_SM4_XTS:
+ case CRYPTO_MODE_AES_XTS:
+ if (key) {
+ write_to_buf(buf, key, 0,
+ ksz >> 1, buflen);
+ write_to_buf(buf, key + (ksz >> 1), 48,
+ ksz >> 1, buflen);
+ /* divide by two since that's
+ * what we program the hardware
+ */
+ ksz = ksz >> 1;
+ }
+ write_to_buf(buf, iv, 32, 16, buflen);
+ break;
+ case CRYPTO_MODE_MULTI2_ECB:
+ case CRYPTO_MODE_MULTI2_CBC:
+ case CRYPTO_MODE_MULTI2_OFB:
+ case CRYPTO_MODE_MULTI2_CFB:
+ write_to_buf(buf, key, 0, ksz, buflen);
+ write_to_buf(buf, iv, 0x28, ivsz, buflen);
+ if (ivsz <= 8) {
+ /*default to 128 rounds*/
+ unsigned char rounds[4] = { 0, 0, 0, 128};
+
+ write_to_buf(buf, rounds, 0x30, 4, buflen);
+ }
+ break;
+ case CRYPTO_MODE_3DES_CBC:
+ case CRYPTO_MODE_3DES_ECB:
+ case CRYPTO_MODE_DES_CBC:
+ case CRYPTO_MODE_DES_ECB:
+ write_to_buf(buf, iv, 0, 8, buflen);
+ write_to_buf(buf, key, 8, ksz, buflen);
+ break;
+ case CRYPTO_MODE_KASUMI_ECB:
+ case CRYPTO_MODE_KASUMI_F8:
+ write_to_buf(buf, iv, 16, 8, buflen);
+ write_to_buf(buf, key, 0, 16, buflen);
+ break;
+ case CRYPTO_MODE_SNOW3G_UEA2:
+ case CRYPTO_MODE_ZUC_UEA3:
+ write_to_buf(buf, key, 0, 32, buflen);
+ break;
+ case CRYPTO_MODE_CHACHA20_STREAM:
+ case CRYPTO_MODE_CHACHA20_POLY1305:
+ write_to_buf(buf, key, 0, ksz, buflen);
+ write_to_buf(buf, iv, 32, ivsz, buflen);
+ break;
+ case CRYPTO_MODE_NULL:
+ break;
+ }
+
+ if (key) {
+ job->ckey_sz = SPACC_SET_CIPHER_KEY_SZ(ksz);
+ job->first_use = 1;
+ }
+ pdu_to_dev_s(ctx->ciph_key, buf, buflen >> 2,
+ spacc->config.spacc_endian);
+ break;
+
+ case SPACC_HASH_OPERATION:
+ /* get page size and then read so we can do a
+ * read-modify-write cycle
+ */
+ buflen = MIN(sizeof(buf),
+ (u32)spacc->config.hash_page_size);
+ pdu_from_dev_s(buf, ctx->hash_key, buflen >> 2,
+ spacc->config.spacc_endian);
+
+ switch (job->hash_mode) {
+ case CRYPTO_MODE_MAC_XCBC:
+ case CRYPTO_MODE_MAC_SM4_XCBC:
+ if (key) {
+ write_to_buf(buf, key + (ksz - 32), 32, 32,
+ buflen);
+ write_to_buf(buf, key, 0, (ksz - 32),
+ buflen);
+ job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz - 32);
+ }
+ break;
+ case CRYPTO_MODE_HASH_CRC32:
+ case CRYPTO_MODE_MAC_SNOW3G_UIA2:
+ case CRYPTO_MODE_MAC_ZUC_UIA3:
+ if (key) {
+ write_to_buf(buf, key, 0, ksz, buflen);
+ job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz);
+ }
+ break;
+ case CRYPTO_MODE_MAC_POLY1305:
+ write_to_buf(buf, key, 0, ksz, buflen);
+ write_to_buf(buf, iv, 32, ivsz, buflen);
+ break;
+ case CRYPTO_MODE_HASH_CSHAKE128:
+ case CRYPTO_MODE_HASH_CSHAKE256:
+ /* use "iv" and "key" to */
+ /* pass s-string and n-string */
+ write_to_buf(buf, iv, 0, ivsz, buflen);
+ write_to_buf(buf, key,
+ spacc->config.string_size, ksz, buflen);
+ break;
+ case CRYPTO_MODE_MAC_KMAC128:
+ case CRYPTO_MODE_MAC_KMAC256:
+ case CRYPTO_MODE_MAC_KMACXOF128:
+ case CRYPTO_MODE_MAC_KMACXOF256:
+ /* use "iv" and "key" to pass s-string & key */
+ write_to_buf(buf, iv, 0, ivsz, buflen);
+ write_to_buf(buf, key,
+ spacc->config.string_size, ksz, buflen);
+ job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz);
+ break;
+ default:
+ if (key) {
+ job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz);
+ write_to_buf(buf, key, 0, ksz, buflen);
+ }
+ }
+ pdu_to_dev_s(ctx->hash_key, buf, buflen >> 2,
+ spacc->config.spacc_endian);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+int spacc_read_context(struct spacc_device *spacc, int job_idx,
+ int op, unsigned char *key, int ksz,
+ unsigned char *iv, int ivsz)
+{
+ int buflen;
+ int ret = CRYPTO_OK;
+ unsigned char buf[300];
+ struct spacc_ctx *ctx = NULL;
+ struct spacc_job *job = NULL;
+
+ if (job_idx < 0 || job_idx > SPACC_MAX_JOBS)
+ return -ENXIO;
+
+ job = &spacc->job[job_idx];
+ ctx = context_lookup_by_job(spacc, job_idx);
+
+ if (!ctx)
+ return -EIO;
+
+ switch (op) {
+ case SPACC_CRYPTO_OPERATION:
+ buflen = MIN(sizeof(buf),
+ (u32)spacc->config.ciph_page_size);
+ pdu_from_dev_s(buf, ctx->ciph_key, buflen >> 2,
+ spacc->config.spacc_endian);
+
+ switch (job->enc_mode) {
+ case CRYPTO_MODE_SM4_ECB:
+ case CRYPTO_MODE_SM4_CBC:
+ case CRYPTO_MODE_SM4_CFB:
+ case CRYPTO_MODE_SM4_OFB:
+ case CRYPTO_MODE_SM4_CTR:
+ case CRYPTO_MODE_SM4_CCM:
+ case CRYPTO_MODE_SM4_GCM:
+ case CRYPTO_MODE_SM4_CS1:
+ case CRYPTO_MODE_SM4_CS2:
+ case CRYPTO_MODE_SM4_CS3:
+ case CRYPTO_MODE_AES_ECB:
+ case CRYPTO_MODE_AES_CBC:
+ case CRYPTO_MODE_AES_CS1:
+ case CRYPTO_MODE_AES_CS2:
+ case CRYPTO_MODE_AES_CS3:
+ case CRYPTO_MODE_AES_CFB:
+ case CRYPTO_MODE_AES_OFB:
+ case CRYPTO_MODE_AES_CTR:
+ case CRYPTO_MODE_AES_CCM:
+ case CRYPTO_MODE_AES_GCM:
+ read_from_buf(key, buf, 0, ksz, buflen);
+ read_from_buf(iv, buf, 32, 16, buflen);
+ break;
+ case CRYPTO_MODE_CHACHA20_STREAM:
+ read_from_buf(key, buf, 0, ksz, buflen);
+ read_from_buf(iv, buf, 32, 16, buflen);
+ break;
+ case CRYPTO_MODE_SM4_F8:
+ case CRYPTO_MODE_AES_F8:
+ if (key) {
+ read_from_buf(key + ksz, buf, 0, ksz, buflen);
+ read_from_buf(key, buf, 48, ksz, buflen);
+ }
+ read_from_buf(iv, buf, 32, 16, buflen);
+ break;
+ case CRYPTO_MODE_SM4_XTS:
+ case CRYPTO_MODE_AES_XTS:
+ if (key) {
+ read_from_buf(key, buf, 0, ksz >> 1, buflen);
+ read_from_buf(key + (ksz >> 1), buf,
+ 48, ksz >> 1, buflen);
+ }
+ read_from_buf(iv, buf, 32, 16, buflen);
+ break;
+ case CRYPTO_MODE_MULTI2_ECB:
+ case CRYPTO_MODE_MULTI2_CBC:
+ case CRYPTO_MODE_MULTI2_OFB:
+ case CRYPTO_MODE_MULTI2_CFB:
+ read_from_buf(key, buf, 0, ksz, buflen);
+ /* Number of rounds at the end of the IV */
+ read_from_buf(iv, buf, 0x28, ivsz, buflen);
+ break;
+ case CRYPTO_MODE_3DES_CBC:
+ case CRYPTO_MODE_3DES_ECB:
+ read_from_buf(iv, buf, 0, 8, buflen);
+ read_from_buf(key, buf, 8, 24, buflen);
+ break;
+ case CRYPTO_MODE_DES_CBC:
+ case CRYPTO_MODE_DES_ECB:
+ read_from_buf(iv, buf, 0, 8, buflen);
+ read_from_buf(key, buf, 8, 8, buflen);
+ break;
+ case CRYPTO_MODE_KASUMI_ECB:
+ case CRYPTO_MODE_KASUMI_F8:
+ read_from_buf(iv, buf, 16, 8, buflen);
+ read_from_buf(key, buf, 0, 16, buflen);
+ break;
+ case CRYPTO_MODE_SNOW3G_UEA2:
+ case CRYPTO_MODE_ZUC_UEA3:
+ read_from_buf(key, buf, 0, 32, buflen);
+ break;
+ case CRYPTO_MODE_NULL:
+ break;
+ }
+ break;
+
+ case SPACC_HASH_OPERATION:
+ buflen = MIN(sizeof(buf),
+ (u32)spacc->config.hash_page_size);
+ pdu_from_dev_s(buf, ctx->hash_key, buflen >> 2,
+ spacc->config.spacc_endian);
+
+ switch (job->hash_mode) {
+ case CRYPTO_MODE_MAC_XCBC:
+ case CRYPTO_MODE_MAC_SM4_XCBC:
+ if (key && ksz <= 64) {
+ read_from_buf(key + (ksz - 32), buf,
+ 32, 32, buflen);
+ read_from_buf(key, buf, 0, ksz - 32, buflen);
+ }
+ break;
+ case CRYPTO_MODE_HASH_CRC32:
+ read_from_buf(iv, buf, 0, ivsz, buflen);
+ break;
+ case CRYPTO_MODE_MAC_SNOW3G_UIA2:
+ case CRYPTO_MODE_MAC_ZUC_UIA3:
+ read_from_buf(key, buf, 0, 32, buflen);
+ break;
+ default:
+ read_from_buf(key, buf, 0, ksz, buflen);
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+/* Context manager: This will reset all reference counts, pointers, etc */
+void spacc_ctx_init_all(struct spacc_device *spacc)
+{
+ int x;
+ struct spacc_ctx *ctx;
+ unsigned long lock_flag;
+
+ spin_lock_irqsave(&spacc->ctx_lock, lock_flag);
+
+ /* initialize contexts */
+ for (x = 0; x < spacc->config.num_ctx; x++) {
+ ctx = &spacc->ctx[x];
+
+ /* sets everything including ref_cnt and ncontig to 0 */
+ memset(ctx, 0, sizeof(*ctx));
+
+ ctx->ciph_key = spacc->regmap + SPACC_CTX_CIPH_KEY +
+ (x * spacc->config.ciph_page_size);
+ ctx->hash_key = spacc->regmap + SPACC_CTX_HASH_KEY +
+ (x * spacc->config.hash_page_size);
+ }
+
+ spin_unlock_irqrestore(&spacc->ctx_lock, lock_flag);
+}
new file mode 100644
@@ -0,0 +1,715 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <crypto/ctr.h>
+#include <crypto/des.h>
+#include <linux/dma-mapping.h>
+#include <crypto/scatterwalk.h>
+#include <crypto/internal/des.h>
+#include <linux/platform_device.h>
+
+#include "spacc_device.h"
+#include "spacc_core.h"
+
+static LIST_HEAD(spacc_cipher_alg_list);
+static DEFINE_MUTEX(spacc_cipher_alg_mutex);
+
+static struct mode_tab possible_ciphers[] = {
+ /* {keylen, MODE_TAB_CIPH(name, id, iv_len, blk_len)} */
+
+ /* SM4 */
+ { MODE_TAB_CIPH("cbc(sm4)", SM4_CBC, 16, 16), .keylen[0] = 16,
+ .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 },
+ { MODE_TAB_CIPH("ecb(sm4)", SM4_ECB, 0, 16), .keylen[0] = 16,
+ .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 },
+ { MODE_TAB_CIPH("ctr(sm4)", SM4_CTR, 16, 1), .keylen[0] = 16,
+ .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 },
+ { MODE_TAB_CIPH("xts(sm4)", SM4_XTS, 16, 16), .keylen[0] = 32,
+ .chunksize = 16, .walksize = 16, .min_keysize = 32, .max_keysize = 32 },
+ { MODE_TAB_CIPH("cts(cbc(sm4))", SM4_CS3, 16, 16), .keylen[0] = 16,
+ .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 },
+
+ /* AES */
+ { MODE_TAB_CIPH("cbc(aes)", AES_CBC, 16, 16), .keylen = { 16, 24, 32 },
+ .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 32 },
+ { MODE_TAB_CIPH("ecb(aes)", AES_ECB, 0, 16), .keylen = { 16, 24, 32 },
+ .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 32 },
+ { MODE_TAB_CIPH("xts(aes)", AES_XTS, 16, 16), .keylen = { 32, 48, 64 },
+ .chunksize = 16, .walksize = 16, .min_keysize = 32, .max_keysize = 64 },
+ { MODE_TAB_CIPH("cts(cbc(aes))", AES_CS3, 16, 16),
+ .keylen = { 16, 24, 32 }, .chunksize = 16, .walksize = 16,
+ .min_keysize = 16, .max_keysize = 32 },
+ { MODE_TAB_CIPH("ctr(aes)", AES_CTR, 16, 1), .keylen = { 16, 24, 32 },
+ .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 32 },
+
+ /* CHACHA20 */
+ { MODE_TAB_CIPH("chacha20", CHACHA20_STREAM, 16, 1), .keylen[0] = 32,
+ .chunksize = 64, .walksize = 64, .min_keysize = 32, .max_keysize = 32 },
+
+ /* DES */
+ { MODE_TAB_CIPH("ecb(des)", DES_ECB, 0, 8), .keylen[0] = 8,
+ .chunksize = 8, .walksize = 8, .min_keysize = 8, .max_keysize = 8},
+ { MODE_TAB_CIPH("cbc(des)", DES_CBC, 8, 8), .keylen[0] = 8,
+ .chunksize = 8, .walksize = 8, .min_keysize = 8, .max_keysize = 8},
+ { MODE_TAB_CIPH("ecb(des3_ede)", 3DES_ECB, 0, 8), .keylen[0] = 24,
+ .chunksize = 8, .walksize = 8, .min_keysize = 24, .max_keysize = 24 },
+ { MODE_TAB_CIPH("cbc(des3_ede)", 3DES_CBC, 8, 8), .keylen[0] = 24,
+ .chunksize = 8, .walksize = 8, .min_keysize = 24, .max_keysize = 24 },
+};
+
+static int spacc_skcipher_fallback(unsigned char *name,
+ struct skcipher_request *req, int enc_dec)
+{
+ int ret = 0;
+ struct crypto_skcipher *reqtfm = crypto_skcipher_reqtfm(req);
+ struct spacc_crypto_ctx *tctx = crypto_skcipher_ctx(reqtfm);
+ struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req);
+
+ tctx->fb.cipher = crypto_alloc_skcipher(name,
+ CRYPTO_ALG_TYPE_SKCIPHER,
+ CRYPTO_ALG_NEED_FALLBACK);
+
+ crypto_skcipher_set_reqsize(reqtfm,
+ sizeof(struct spacc_crypto_reqctx) +
+ crypto_skcipher_reqsize(tctx->fb.cipher));
+ ret = crypto_skcipher_setkey(tctx->fb.cipher, tctx->cipher_key,
+ tctx->key_len);
+ if (ret)
+ return ret;
+
+ skcipher_request_set_tfm(&ctx->fb.cipher_req, tctx->fb.cipher);
+ skcipher_request_set_crypt(&ctx->fb.cipher_req, req->src, req->dst,
+ req->cryptlen, req->iv);
+
+ if (enc_dec)
+ ret = crypto_skcipher_decrypt(&ctx->fb.cipher_req);
+ else
+ ret = crypto_skcipher_encrypt(&ctx->fb.cipher_req);
+
+ crypto_free_skcipher(tctx->fb.cipher);
+ tctx->fb.cipher = NULL;
+
+ if (tctx->cipher_key) {
+ kfree(NULL);
+ tctx->cipher_key = NULL;
+ }
+ return ret;
+}
+
+static void spacc_cipher_cleanup_dma(struct device *dev,
+ struct skcipher_request *req)
+{
+ struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req);
+ struct spacc_crypto_ctx *tctx = ctx->ccb.tctx;
+
+ if (req->dst != req->src) {
+ if (ctx->src_nents) {
+ dma_unmap_sg(dev, req->src, ctx->src_nents,
+ DMA_TO_DEVICE);
+ pdu_ddt_free(&ctx->src);
+ }
+
+ if (ctx->dst_nents) {
+ dma_unmap_sg(dev, req->dst, ctx->dst_nents,
+ DMA_FROM_DEVICE);
+ pdu_ddt_free(&ctx->dst);
+ }
+ } else {
+ if (ctx->src_nents) {
+ dma_unmap_sg(dev, req->src, ctx->src_nents,
+ DMA_TO_DEVICE);
+ pdu_ddt_free(&ctx->src);
+ }
+ }
+
+ if (tctx->cipher_key) {
+ kfree(NULL);
+ tctx->cipher_key = NULL;
+ }
+}
+
+static void spacc_cipher_cb(void *spacc, void *tfm)
+{
+ int err = -1;
+ struct cipher_cb_data *cb = tfm;
+ struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(cb->req);
+
+ u32 status_reg = readl(cb->spacc->regmap + SPACC_REG_STATUS);
+ u32 status_ret = (status_reg >> 24) & 0x03;
+
+ if (ctx->mode == CRYPTO_MODE_DES_CBC ||
+ ctx->mode == CRYPTO_MODE_3DES_CBC) {
+ spacc_read_context(cb->spacc, cb->tctx->handle,
+ SPACC_CRYPTO_OPERATION, NULL, 0,
+ cb->req->iv, 8);
+ } else if (ctx->mode != CRYPTO_MODE_DES_ECB &&
+ ctx->mode != CRYPTO_MODE_3DES_ECB &&
+ ctx->mode != CRYPTO_MODE_SM4_ECB &&
+ ctx->mode != CRYPTO_MODE_AES_ECB &&
+ ctx->mode != CRYPTO_MODE_SM4_XTS &&
+ ctx->mode != CRYPTO_MODE_KASUMI_ECB) {
+ if (status_ret == 0x3) {
+ err = -EINVAL;
+ goto CALLBACK_ERR;
+ }
+ spacc_read_context(cb->spacc, cb->tctx->handle,
+ SPACC_CRYPTO_OPERATION, NULL, 0,
+ cb->req->iv, 16);
+ }
+
+ if (ctx->mode != CRYPTO_MODE_DES_ECB &&
+ ctx->mode != CRYPTO_MODE_DES_CBC &&
+ ctx->mode != CRYPTO_MODE_3DES_ECB &&
+ ctx->mode != CRYPTO_MODE_3DES_CBC) {
+ if (status_ret == 0x03) {
+ err = -EINVAL;
+ goto CALLBACK_ERR;
+ }
+ }
+
+ if (ctx->mode == CRYPTO_MODE_SM4_ECB && status_ret == 0x03) {
+ err = -EINVAL;
+ goto CALLBACK_ERR;
+ }
+
+ if (cb->req->dst != cb->req->src)
+ dma_sync_sg_for_cpu(cb->tctx->dev, cb->req->dst, ctx->dst_nents,
+ DMA_FROM_DEVICE);
+
+ err = cb->spacc->job[cb->new_handle].job_err;
+
+CALLBACK_ERR:
+ spacc_cipher_cleanup_dma(cb->tctx->dev, cb->req);
+ spacc_close(cb->spacc, cb->new_handle);
+ skcipher_request_complete(cb->req, err);
+}
+
+static int spacc_cipher_init_dma(struct device *dev,
+ struct skcipher_request *req)
+{
+ struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req);
+ int rc;
+
+ if (req->src == req->dst) {
+ rc = spacc_sg_to_ddt(dev, req->src, req->cryptlen, &ctx->src,
+ DMA_TO_DEVICE);
+ if (rc < 0) {
+ pdu_ddt_free(&ctx->src);
+ return rc;
+ }
+ ctx->src_nents = rc;
+ } else {
+ rc = spacc_sg_to_ddt(dev, req->src, req->cryptlen, &ctx->src,
+ DMA_TO_DEVICE);
+ if (rc < 0) {
+ pdu_ddt_free(&ctx->src);
+ return rc;
+ }
+ ctx->src_nents = rc;
+
+ rc = spacc_sg_to_ddt(dev, req->dst, req->cryptlen, &ctx->dst,
+ DMA_FROM_DEVICE);
+ if (rc < 0) {
+ pdu_ddt_free(&ctx->dst);
+ return rc;
+ }
+ ctx->dst_nents = rc;
+ }
+
+ return 0;
+}
+
+static int spacc_cipher_cra_init(struct crypto_tfm *tfm)
+{
+ struct spacc_crypto_ctx *tctx = crypto_tfm_ctx(tfm);
+ const struct spacc_alg *salg = spacc_tfm_skcipher(tfm);
+
+ tctx->keylen = 0;
+ tctx->cipher_key = NULL;
+ tctx->handle = -1;
+ tctx->ctx_valid = false;
+ tctx->dev = get_device(salg->dev[0]);
+
+ crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm),
+ sizeof(struct spacc_crypto_reqctx));
+
+ return 0;
+}
+
+static void spacc_cipher_cra_exit(struct crypto_tfm *tfm)
+{
+ struct spacc_crypto_ctx *tctx = crypto_tfm_ctx(tfm);
+ struct spacc_priv *priv = dev_get_drvdata(tctx->dev);
+
+
+ if (tctx->handle >= 0)
+ spacc_close(&priv->spacc, tctx->handle);
+
+ put_device(tctx->dev);
+}
+
+
+static int spacc_check_keylen(const struct spacc_alg *salg, unsigned int keylen)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(salg->mode->keylen); i++)
+ if (salg->mode->keylen[i] == keylen)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int spacc_cipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ int ret = 0, rc = 0, err;
+ const struct spacc_alg *salg = spacc_tfm_skcipher(&tfm->base);
+ struct spacc_crypto_ctx *tctx = crypto_skcipher_ctx(tfm);
+ struct spacc_priv *priv = dev_get_drvdata(tctx->dev);
+ struct spacc_crypto_reqctx *ctx = crypto_skcipher_ctx(tfm);
+
+ err = spacc_check_keylen(salg, keylen);
+ if (err)
+ return err;
+
+ ctx->mode = salg->mode->id;
+ tctx->key_len = keylen;
+ tctx->cipher_key = kmalloc(keylen, GFP_KERNEL);
+ memcpy(tctx->cipher_key, key, keylen);
+
+ if (tctx->handle >= 0) {
+ spacc_close(&priv->spacc, tctx->handle);
+ put_device(tctx->dev);
+ tctx->handle = -1;
+ tctx->dev = NULL;
+ }
+
+ priv = NULL;
+ priv = dev_get_drvdata(salg->dev[0]);
+ tctx->dev = get_device(salg->dev[0]);
+ ret = spacc_isenabled(&priv->spacc, salg->mode->id,
+ keylen);
+ if (ret)
+ tctx->handle = spacc_open(&priv->spacc, salg->mode->id,
+ CRYPTO_MODE_NULL, -1, 0,
+ spacc_cipher_cb, tfm);
+
+ if (tctx->handle < 0) {
+ put_device(salg->dev[0]);
+ dev_dbg(salg->dev[0], "failed to open SPAcc context\n");
+ return -EINVAL;
+ }
+
+ /* Weak key Implementation for DES_ECB */
+ if (salg->mode->id == CRYPTO_MODE_DES_ECB) {
+ err = verify_skcipher_des_key(tfm, key);
+ if (err)
+ return -EINVAL;
+ }
+
+ if (salg->mode->id == CRYPTO_MODE_SM4_F8 ||
+ salg->mode->id == CRYPTO_MODE_AES_F8) {
+ /* f8 mode requires an IV of 128-bits and a key-salt mask,
+ * equivalent in size to the key.
+ * AES-F8 or SM4-F8 mode has a SALTKEY prepended to the base
+ * key.
+ */
+ rc = spacc_write_context(&priv->spacc, tctx->handle,
+ SPACC_CRYPTO_OPERATION, key, 16,
+ NULL, 0);
+ } else {
+ rc = spacc_write_context(&priv->spacc, tctx->handle,
+ SPACC_CRYPTO_OPERATION, key, keylen,
+ NULL, 0);
+ }
+
+ if (rc < 0) {
+ dev_dbg(salg->dev[0], "failed with SPAcc write context\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int spacc_cipher_process(struct skcipher_request *req, int enc_dec)
+{
+ u8 ivc1[16];
+ unsigned char *name;
+ unsigned int len = 0;
+ u32 num_iv = 0, diff;
+ u64 num_iv64 = 0, diff64;
+ unsigned char chacha20_iv[16];
+ int rc = 0, ret = 0, i = 0, j = 0;
+ struct crypto_skcipher *reqtfm = crypto_skcipher_reqtfm(req);
+ struct spacc_crypto_ctx *tctx = crypto_skcipher_ctx(reqtfm);
+ struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req);
+ struct spacc_priv *priv = dev_get_drvdata(tctx->dev);
+ const struct spacc_alg *salg = spacc_tfm_skcipher(&reqtfm->base);
+ struct spacc_device *device_h = &priv->spacc;
+
+ len = ctx->crypt_len / 16;
+
+ if (req->cryptlen == 0) {
+ if (salg->mode->id == CRYPTO_MODE_SM4_CS3 ||
+ salg->mode->id == CRYPTO_MODE_SM4_XTS ||
+ salg->mode->id == CRYPTO_MODE_AES_XTS ||
+ salg->mode->id == CRYPTO_MODE_AES_CS3)
+ return -EINVAL;
+ else
+ return 0;
+ }
+
+ /* Given IV - <1st 4-bytes as counter value>
+ * <last 12-bytes as nonce>
+ * Reversing the order of nonce & counter as,
+ * <1st 12-bytes as nonce>
+ * <last 4-bytes as counter>
+ * and then write to HW context,
+ * ex:
+ * Given IV - 2a000000000000000000000000000002
+ * Reverse order - 0000000000000000000000020000002a
+ */
+ if (salg->mode->id == CRYPTO_MODE_CHACHA20_STREAM) {
+ for (i = 4; i < 16; i++) {
+ chacha20_iv[j] = req->iv[i];
+ j++;
+ }
+
+ j = j + 3;
+
+ for (i = 0; i <= 3; i++) {
+ chacha20_iv[j] = req->iv[i];
+ j--;
+ }
+ memcpy(req->iv, chacha20_iv, 16);
+ }
+
+ if (salg->mode->id == CRYPTO_MODE_SM4_CFB) {
+ if (req->cryptlen % 16 != 0) {
+ name = salg->calg->cra_name;
+ ret = spacc_skcipher_fallback(name, req, enc_dec);
+ return ret;
+ }
+ }
+
+ if (salg->mode->id == CRYPTO_MODE_SM4_XTS ||
+ salg->mode->id == CRYPTO_MODE_SM4_CS3 ||
+ salg->mode->id == CRYPTO_MODE_AES_XTS ||
+ salg->mode->id == CRYPTO_MODE_AES_CS3) {
+ if (req->cryptlen == 16) {
+ name = salg->calg->cra_name;
+ ret = spacc_skcipher_fallback(name, req, enc_dec);
+ return ret;
+ }
+ }
+
+ if (salg->mode->id == CRYPTO_MODE_AES_CTR ||
+ salg->mode->id == CRYPTO_MODE_SM4_CTR) {
+ /* copy the IV to local buffer */
+ for (i = 0; i < 16; i++)
+ ivc1[i] = req->iv[i];
+
+ /* 32-bit counter width */
+ if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3) & (0x2)) {
+
+ for (i = 12; i < 16; i++) {
+ num_iv <<= 8;
+ num_iv |= ivc1[i];
+ }
+
+ diff = SPACC_CTR_IV_MAX32 - num_iv;
+
+ if (len > diff) {
+ name = salg->calg->cra_name;
+ ret = spacc_skcipher_fallback(name,
+ req, enc_dec);
+ return ret;
+ }
+ } else if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3)
+ & (0x3)) { /* 64-bit counter width */
+
+ for (i = 8; i < 16; i++) {
+ num_iv64 <<= 8;
+ num_iv64 |= ivc1[i];
+ }
+
+ diff64 = SPACC_CTR_IV_MAX64 - num_iv64;
+
+ if (len > diff64) {
+ name = salg->calg->cra_name;
+ ret = spacc_skcipher_fallback(name,
+ req, enc_dec);
+ return ret;
+ }
+ } else if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3)
+ & (0x1)) { /* 16-bit counter width */
+
+ for (i = 14; i < 16; i++) {
+ num_iv <<= 8;
+ num_iv |= ivc1[i];
+ }
+
+ diff = SPACC_CTR_IV_MAX16 - num_iv;
+
+ if (len > diff) {
+ name = salg->calg->cra_name;
+ ret = spacc_skcipher_fallback(name,
+ req, enc_dec);
+ return ret;
+ }
+ } else if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3)
+ & (0x0)) { /* 8-bit counter width */
+
+ for (i = 15; i < 16; i++) {
+ num_iv <<= 8;
+ num_iv |= ivc1[i];
+ }
+
+ diff = SPACC_CTR_IV_MAX8 - num_iv;
+
+ if (len > diff) {
+ name = salg->calg->cra_name;
+ ret = spacc_skcipher_fallback(name,
+ req, enc_dec);
+ return ret;
+ }
+ }
+ }
+
+ if (salg->mode->id == CRYPTO_MODE_DES_CBC ||
+ salg->mode->id == CRYPTO_MODE_3DES_CBC)
+ rc = spacc_write_context(&priv->spacc, tctx->handle,
+ SPACC_CRYPTO_OPERATION, NULL, 0,
+ req->iv, 8);
+ else if (salg->mode->id != CRYPTO_MODE_DES_ECB &&
+ salg->mode->id != CRYPTO_MODE_3DES_ECB &&
+ salg->mode->id != CRYPTO_MODE_SM4_ECB &&
+ salg->mode->id != CRYPTO_MODE_AES_ECB &&
+ salg->mode->id != CRYPTO_MODE_KASUMI_ECB)
+ rc = spacc_write_context(&priv->spacc, tctx->handle,
+ SPACC_CRYPTO_OPERATION, NULL, 0,
+ req->iv, 16);
+
+ if (rc < 0)
+ pr_err("ERR: spacc_write_context\n");
+
+ /* Initialize the DMA */
+ rc = spacc_cipher_init_dma(tctx->dev, req);
+
+ ctx->ccb.new_handle = spacc_clone_handle(&priv->spacc, tctx->handle,
+ &ctx->ccb);
+ if (ctx->ccb.new_handle < 0) {
+ spacc_cipher_cleanup_dma(tctx->dev, req);
+ dev_dbg(salg->dev[0], "failed to clone handle\n");
+ return -EINVAL;
+ }
+
+ /* copying the data to clone handle */
+ ctx->ccb.tctx = tctx;
+ ctx->ccb.ctx = ctx;
+ ctx->ccb.req = req;
+ ctx->ccb.spacc = &priv->spacc;
+
+ if (salg->mode->id == CRYPTO_MODE_SM4_CS3) {
+ int handle = ctx->ccb.new_handle;
+
+ if (handle < 0 || handle > SPACC_MAX_JOBS)
+ return -ENXIO;
+
+ device_h->job[handle].auxinfo_cs_mode = 3;
+ }
+
+ if (enc_dec) { /* for decrypt */
+ rc = spacc_set_operation(&priv->spacc, ctx->ccb.new_handle, 1,
+ ICV_IGNORE, IP_ICV_IGNORE, 0, 0, 0);
+ spacc_set_key_exp(&priv->spacc, ctx->ccb.new_handle);
+ } else { /* for encrypt */
+ rc = spacc_set_operation(&priv->spacc, ctx->ccb.new_handle, 0,
+ ICV_IGNORE, IP_ICV_IGNORE, 0, 0, 0);
+ }
+
+ rc = spacc_packet_enqueue_ddt(&priv->spacc, ctx->ccb.new_handle,
+ &ctx->src,
+ (req->dst == req->src) ? &ctx->src :
+ &ctx->dst,
+ req->cryptlen,
+ 0, 0, 0, 0, 0);
+ if (rc < 0) {
+ spacc_cipher_cleanup_dma(tctx->dev, req);
+ spacc_close(&priv->spacc, ctx->ccb.new_handle);
+
+ if (rc != -EBUSY && rc < 0) {
+ dev_err(tctx->dev,
+ "failed to enqueue job, ERR: %d\n", rc);
+ return rc;
+ } else if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
+ return -EBUSY;
+ }
+ }
+
+ priv->spacc.job[tctx->handle].first_use = 0;
+ priv->spacc.job[tctx->handle].ctrl &=
+ ~(1UL << priv->spacc.config.ctrl_map[SPACC_CTRL_KEY_EXP]);
+
+ return -EINPROGRESS;
+}
+
+static int spacc_cipher_encrypt(struct skcipher_request *req)
+{
+ int rv = 0;
+ struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req);
+
+ ctx->crypt_len = req->cryptlen;
+
+ /* enc_dec - 0(encrypt), 1(decrypt) */
+ rv = spacc_cipher_process(req, 0);
+
+ return rv;
+}
+
+static int spacc_cipher_decrypt(struct skcipher_request *req)
+{
+ int rv = 0;
+ struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req);
+
+ ctx->crypt_len = req->cryptlen;
+
+ /* enc_dec - 0(encrypt), 1(decrypt) */
+ rv = spacc_cipher_process(req, 1);
+
+ return rv;
+}
+
+static struct skcipher_alg spacc_skcipher_alg = {
+ .setkey = spacc_cipher_setkey,
+ .encrypt = spacc_cipher_encrypt,
+ .decrypt = spacc_cipher_decrypt,
+ /*
+ * Chunksize: Equal to the block size except for stream cipher
+ * such as CTR where it is set to the underlying block size.
+ *
+ * Walksize: Equal to the chunk size except in cases where the
+ * algorithm is considerably more efficient if it can operate on
+ * multiple chunks in parallel. Should be a multiple of chunksize.
+ */
+ .min_keysize = 16,
+ .max_keysize = 64,
+ .ivsize = 16,
+ .chunksize = 16,
+ .walksize = 16,
+ .base = {
+ .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_ALLOCATES_MEMORY |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = 16,
+ .cra_ctxsize = sizeof(struct spacc_crypto_ctx),
+ .cra_priority = 300,
+ .cra_init = spacc_cipher_cra_init,
+ .cra_exit = spacc_cipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+};
+
+static void spacc_init_calg(struct crypto_alg *calg,
+ const struct mode_tab *mode)
+{
+
+ strscpy(calg->cra_name, mode->name, sizeof(mode->name) - 1);
+ calg->cra_name[sizeof(mode->name) - 1] = '\0';
+
+ strscpy(calg->cra_driver_name, "spacc-");
+ strcat(calg->cra_driver_name, mode->name);
+ calg->cra_driver_name[sizeof(calg->cra_driver_name) - 1] = '\0';
+ calg->cra_blocksize = mode->blocklen;
+}
+
+static int spacc_register_cipher(struct spacc_alg *salg,
+ unsigned int algo_idx)
+{
+ int rc;
+
+ salg->calg = &salg->alg.skcipher.base;
+ salg->alg.skcipher = spacc_skcipher_alg;
+
+ /* this function will assign mode->name to calg->cra_name &
+ * calg->cra_driver_name
+ */
+ spacc_init_calg(salg->calg, salg->mode);
+ salg->alg.skcipher.ivsize = salg->mode->ivlen;
+ salg->alg.skcipher.base.cra_blocksize = salg->mode->blocklen;
+
+ salg->alg.skcipher.chunksize = possible_ciphers[algo_idx].chunksize;
+ salg->alg.skcipher.walksize = possible_ciphers[algo_idx].walksize;
+ salg->alg.skcipher.min_keysize = possible_ciphers[algo_idx].min_keysize;
+ salg->alg.skcipher.max_keysize = possible_ciphers[algo_idx].max_keysize;
+
+ rc = crypto_register_skcipher(&salg->alg.skcipher);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&spacc_cipher_alg_mutex);
+ list_add(&salg->list, &spacc_cipher_alg_list);
+ mutex_unlock(&spacc_cipher_alg_mutex);
+
+ return 0;
+}
+
+int probe_ciphers(struct platform_device *spacc_pdev)
+{
+ int rc;
+ unsigned int i, y;
+ int registered = 0;
+ struct spacc_alg *salg;
+ struct spacc_priv *priv = dev_get_drvdata(&spacc_pdev->dev);
+
+ for (i = 0; i < ARRAY_SIZE(possible_ciphers); i++)
+ possible_ciphers[i].valid = 0;
+
+ for (i = 0; i < ARRAY_SIZE(possible_ciphers) &&
+ (possible_ciphers[i].valid == 0); i++) {
+ for (y = 0; y < 3; y++) {
+ if (spacc_isenabled(&priv->spacc,
+ possible_ciphers[i].id & 0xFF,
+ possible_ciphers[i].keylen[y])) {
+ salg = kmalloc(sizeof(*salg), GFP_KERNEL);
+ if (!salg)
+ return -ENOMEM;
+
+ salg->mode = &possible_ciphers[i];
+ salg->dev[0] = &spacc_pdev->dev;
+
+ if (possible_ciphers[i].valid == 0) {
+ rc = spacc_register_cipher(salg, i);
+ if (rc < 0) {
+ kfree(salg);
+ continue;
+ }
+ }
+ dev_dbg(&spacc_pdev->dev, "registered %s\n",
+ possible_ciphers[i].name);
+ registered++;
+ possible_ciphers[i].valid = 1;
+ }
+ }
+ }
+
+ return registered;
+}
+
+int spacc_unregister_cipher_algs(void)
+{
+ struct spacc_alg *salg, *tmp;
+
+ mutex_lock(&spacc_cipher_alg_mutex);
+
+ list_for_each_entry_safe(salg, tmp, &spacc_cipher_alg_list, list) {
+ crypto_unregister_skcipher(&salg->alg.skcipher);
+ list_del(&salg->list);
+ kfree(salg);
+ }
+
+ mutex_unlock(&spacc_cipher_alg_mutex);
+
+ return 0;
+}