* Copyright (C) 2013,2016 Advanced Micro Devices, Inc.
*
* Author: Tom Lendacky <thomas.lendacky@amd.com>
+ * Author: Gary R Hook <gary.hook@amd.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#include "ccp-dev.h"
/* SHA initial context values */
-static const __be32 ccp_sha1_init[CCP_SHA_CTXSIZE / sizeof(__be32)] = {
+static const __be32 ccp_sha1_init[SHA1_DIGEST_SIZE / sizeof(__be32)] = {
cpu_to_be32(SHA1_H0), cpu_to_be32(SHA1_H1),
cpu_to_be32(SHA1_H2), cpu_to_be32(SHA1_H3),
- cpu_to_be32(SHA1_H4), 0, 0, 0,
+ cpu_to_be32(SHA1_H4),
};
-static const __be32 ccp_sha224_init[CCP_SHA_CTXSIZE / sizeof(__be32)] = {
+static const __be32 ccp_sha224_init[SHA256_DIGEST_SIZE / sizeof(__be32)] = {
cpu_to_be32(SHA224_H0), cpu_to_be32(SHA224_H1),
cpu_to_be32(SHA224_H2), cpu_to_be32(SHA224_H3),
cpu_to_be32(SHA224_H4), cpu_to_be32(SHA224_H5),
cpu_to_be32(SHA224_H6), cpu_to_be32(SHA224_H7),
};
-static const __be32 ccp_sha256_init[CCP_SHA_CTXSIZE / sizeof(__be32)] = {
+static const __be32 ccp_sha256_init[SHA256_DIGEST_SIZE / sizeof(__be32)] = {
cpu_to_be32(SHA256_H0), cpu_to_be32(SHA256_H1),
cpu_to_be32(SHA256_H2), cpu_to_be32(SHA256_H3),
cpu_to_be32(SHA256_H4), cpu_to_be32(SHA256_H5),
cpu_to_be32(SHA256_H6), cpu_to_be32(SHA256_H7),
};
-static u32 ccp_alloc_ksb(struct ccp_device *ccp, unsigned int count)
-{
- int start;
-
- for (;;) {
- mutex_lock(&ccp->ksb_mutex);
-
- start = (u32)bitmap_find_next_zero_area(ccp->ksb,
- ccp->ksb_count,
- ccp->ksb_start,
- count, 0);
- if (start <= ccp->ksb_count) {
- bitmap_set(ccp->ksb, start, count);
-
- mutex_unlock(&ccp->ksb_mutex);
- break;
- }
-
- ccp->ksb_avail = 0;
-
- mutex_unlock(&ccp->ksb_mutex);
-
- /* Wait for KSB entries to become available */
- if (wait_event_interruptible(ccp->ksb_queue, ccp->ksb_avail))
- return 0;
- }
-
- return KSB_START + start;
-}
-
-static void ccp_free_ksb(struct ccp_device *ccp, unsigned int start,
- unsigned int count)
-{
- if (!start)
- return;
-
- mutex_lock(&ccp->ksb_mutex);
-
- bitmap_clear(ccp->ksb, start - KSB_START, count);
-
- ccp->ksb_avail = 1;
-
- mutex_unlock(&ccp->ksb_mutex);
-
- wake_up_interruptible_all(&ccp->ksb_queue);
-}
+#define CCP_NEW_JOBID(ccp) ((ccp->vdata->version == CCP_VERSION(3, 0)) ? \
+ ccp_gen_jobid(ccp) : 0)
static u32 ccp_gen_jobid(struct ccp_device *ccp)
{
unsigned int len, unsigned int se_len,
bool sign_extend)
{
- unsigned int nbytes, sg_offset, dm_offset, ksb_len, i;
+ unsigned int nbytes, sg_offset, dm_offset, sb_len, i;
u8 buffer[CCP_REVERSE_BUF_SIZE];
if (WARN_ON(se_len > sizeof(buffer)))
dm_offset = 0;
nbytes = len;
while (nbytes) {
- ksb_len = min_t(unsigned int, nbytes, se_len);
- sg_offset -= ksb_len;
+ sb_len = min_t(unsigned int, nbytes, se_len);
+ sg_offset -= sb_len;
- scatterwalk_map_and_copy(buffer, sg, sg_offset, ksb_len, 0);
- for (i = 0; i < ksb_len; i++)
- wa->address[dm_offset + i] = buffer[ksb_len - i - 1];
+ scatterwalk_map_and_copy(buffer, sg, sg_offset, sb_len, 0);
+ for (i = 0; i < sb_len; i++)
+ wa->address[dm_offset + i] = buffer[sb_len - i - 1];
- dm_offset += ksb_len;
- nbytes -= ksb_len;
+ dm_offset += sb_len;
+ nbytes -= sb_len;
- if ((ksb_len != se_len) && sign_extend) {
+ if ((sb_len != se_len) && sign_extend) {
/* Must sign-extend to nearest sign-extend length */
if (wa->address[dm_offset - 1] & 0x80)
memset(wa->address + dm_offset, 0xff,
- se_len - ksb_len);
+ se_len - sb_len);
}
}
struct scatterlist *sg,
unsigned int len)
{
- unsigned int nbytes, sg_offset, dm_offset, ksb_len, i;
+ unsigned int nbytes, sg_offset, dm_offset, sb_len, i;
u8 buffer[CCP_REVERSE_BUF_SIZE];
sg_offset = 0;
dm_offset = len;
nbytes = len;
while (nbytes) {
- ksb_len = min_t(unsigned int, nbytes, sizeof(buffer));
- dm_offset -= ksb_len;
+ sb_len = min_t(unsigned int, nbytes, sizeof(buffer));
+ dm_offset -= sb_len;
- for (i = 0; i < ksb_len; i++)
- buffer[ksb_len - i - 1] = wa->address[dm_offset + i];
- scatterwalk_map_and_copy(buffer, sg, sg_offset, ksb_len, 1);
+ for (i = 0; i < sb_len; i++)
+ buffer[sb_len - i - 1] = wa->address[dm_offset + i];
+ scatterwalk_map_and_copy(buffer, sg, sg_offset, sb_len, 1);
- sg_offset += ksb_len;
- nbytes -= ksb_len;
+ sg_offset += sb_len;
+ nbytes -= sb_len;
}
}
}
}
-static int ccp_copy_to_from_ksb(struct ccp_cmd_queue *cmd_q,
- struct ccp_dm_workarea *wa, u32 jobid, u32 ksb,
- u32 byte_swap, bool from)
+static int ccp_copy_to_from_sb(struct ccp_cmd_queue *cmd_q,
+ struct ccp_dm_workarea *wa, u32 jobid, u32 sb,
+ u32 byte_swap, bool from)
{
struct ccp_op op;
if (from) {
op.soc = 1;
- op.src.type = CCP_MEMTYPE_KSB;
- op.src.u.ksb = ksb;
+ op.src.type = CCP_MEMTYPE_SB;
+ op.src.u.sb = sb;
op.dst.type = CCP_MEMTYPE_SYSTEM;
op.dst.u.dma.address = wa->dma.address;
op.dst.u.dma.length = wa->length;
op.src.type = CCP_MEMTYPE_SYSTEM;
op.src.u.dma.address = wa->dma.address;
op.src.u.dma.length = wa->length;
- op.dst.type = CCP_MEMTYPE_KSB;
- op.dst.u.ksb = ksb;
+ op.dst.type = CCP_MEMTYPE_SB;
+ op.dst.u.sb = sb;
}
op.u.passthru.byte_swap = byte_swap;
- return cmd_q->ccp->vdata->perform->perform_passthru(&op);
+ return cmd_q->ccp->vdata->perform->passthru(&op);
}
-static int ccp_copy_to_ksb(struct ccp_cmd_queue *cmd_q,
- struct ccp_dm_workarea *wa, u32 jobid, u32 ksb,
- u32 byte_swap)
+static int ccp_copy_to_sb(struct ccp_cmd_queue *cmd_q,
+ struct ccp_dm_workarea *wa, u32 jobid, u32 sb,
+ u32 byte_swap)
{
- return ccp_copy_to_from_ksb(cmd_q, wa, jobid, ksb, byte_swap, false);
+ return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, false);
}
-static int ccp_copy_from_ksb(struct ccp_cmd_queue *cmd_q,
- struct ccp_dm_workarea *wa, u32 jobid, u32 ksb,
- u32 byte_swap)
+static int ccp_copy_from_sb(struct ccp_cmd_queue *cmd_q,
+ struct ccp_dm_workarea *wa, u32 jobid, u32 sb,
+ u32 byte_swap)
{
- return ccp_copy_to_from_ksb(cmd_q, wa, jobid, ksb, byte_swap, true);
+ return ccp_copy_to_from_sb(cmd_q, wa, jobid, sb, byte_swap, true);
}
static int ccp_run_aes_cmac_cmd(struct ccp_cmd_queue *cmd_q,
return -EINVAL;
}
- BUILD_BUG_ON(CCP_AES_KEY_KSB_COUNT != 1);
- BUILD_BUG_ON(CCP_AES_CTX_KSB_COUNT != 1);
+ BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1);
+ BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1);
ret = -EIO;
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
- op.jobid = ccp_gen_jobid(cmd_q->ccp);
- op.ksb_key = cmd_q->ksb_key;
- op.ksb_ctx = cmd_q->ksb_ctx;
+ op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
+ op.sb_key = cmd_q->sb_key;
+ op.sb_ctx = cmd_q->sb_ctx;
op.init = 1;
op.u.aes.type = aes->type;
op.u.aes.mode = aes->mode;
op.u.aes.action = aes->action;
- /* All supported key sizes fit in a single (32-byte) KSB entry
+ /* All supported key sizes fit in a single (32-byte) SB entry
* and must be in little endian format. Use the 256-bit byte
* swap passthru option to convert from big endian to little
* endian.
*/
ret = ccp_init_dm_workarea(&key, cmd_q,
- CCP_AES_KEY_KSB_COUNT * CCP_KSB_BYTES,
+ CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES,
DMA_TO_DEVICE);
if (ret)
return ret;
- dm_offset = CCP_KSB_BYTES - aes->key_len;
+ dm_offset = CCP_SB_BYTES - aes->key_len;
ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len);
- ret = ccp_copy_to_ksb(cmd_q, &key, op.jobid, op.ksb_key,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_key;
}
- /* The AES context fits in a single (32-byte) KSB entry and
+ /* The AES context fits in a single (32-byte) SB entry and
* must be in little endian format. Use the 256-bit byte swap
* passthru option to convert from big endian to little endian.
*/
ret = ccp_init_dm_workarea(&ctx, cmd_q,
- CCP_AES_CTX_KSB_COUNT * CCP_KSB_BYTES,
+ CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES,
DMA_BIDIRECTIONAL);
if (ret)
goto e_key;
- dm_offset = CCP_KSB_BYTES - AES_BLOCK_SIZE;
+ dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE;
ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len);
- ret = ccp_copy_to_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_ctx;
op.eom = 1;
/* Push the K1/K2 key to the CCP now */
- ret = ccp_copy_from_ksb(cmd_q, &ctx, op.jobid,
- op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid,
+ op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_src;
ccp_set_dm_area(&ctx, 0, aes->cmac_key, 0,
aes->cmac_key_len);
- ret = ccp_copy_to_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_src;
}
}
- ret = cmd_q->ccp->vdata->perform->perform_aes(&op);
+ ret = cmd_q->ccp->vdata->perform->aes(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_src;
/* Retrieve the AES context - convert from LE to BE using
* 32-byte (256-bit) byteswapping
*/
- ret = ccp_copy_from_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_src;
}
/* ...but we only need AES_BLOCK_SIZE bytes */
- dm_offset = CCP_KSB_BYTES - AES_BLOCK_SIZE;
+ dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE;
ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len);
e_src:
return -EINVAL;
}
- BUILD_BUG_ON(CCP_AES_KEY_KSB_COUNT != 1);
- BUILD_BUG_ON(CCP_AES_CTX_KSB_COUNT != 1);
+ BUILD_BUG_ON(CCP_AES_KEY_SB_COUNT != 1);
+ BUILD_BUG_ON(CCP_AES_CTX_SB_COUNT != 1);
ret = -EIO;
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
- op.jobid = ccp_gen_jobid(cmd_q->ccp);
- op.ksb_key = cmd_q->ksb_key;
- op.ksb_ctx = cmd_q->ksb_ctx;
+ op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
+ op.sb_key = cmd_q->sb_key;
+ op.sb_ctx = cmd_q->sb_ctx;
op.init = (aes->mode == CCP_AES_MODE_ECB) ? 0 : 1;
op.u.aes.type = aes->type;
op.u.aes.mode = aes->mode;
op.u.aes.action = aes->action;
- /* All supported key sizes fit in a single (32-byte) KSB entry
+ /* All supported key sizes fit in a single (32-byte) SB entry
* and must be in little endian format. Use the 256-bit byte
* swap passthru option to convert from big endian to little
* endian.
*/
ret = ccp_init_dm_workarea(&key, cmd_q,
- CCP_AES_KEY_KSB_COUNT * CCP_KSB_BYTES,
+ CCP_AES_KEY_SB_COUNT * CCP_SB_BYTES,
DMA_TO_DEVICE);
if (ret)
return ret;
- dm_offset = CCP_KSB_BYTES - aes->key_len;
+ dm_offset = CCP_SB_BYTES - aes->key_len;
ccp_set_dm_area(&key, dm_offset, aes->key, 0, aes->key_len);
- ret = ccp_copy_to_ksb(cmd_q, &key, op.jobid, op.ksb_key,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_key;
}
- /* The AES context fits in a single (32-byte) KSB entry and
+ /* The AES context fits in a single (32-byte) SB entry and
* must be in little endian format. Use the 256-bit byte swap
* passthru option to convert from big endian to little endian.
*/
ret = ccp_init_dm_workarea(&ctx, cmd_q,
- CCP_AES_CTX_KSB_COUNT * CCP_KSB_BYTES,
+ CCP_AES_CTX_SB_COUNT * CCP_SB_BYTES,
DMA_BIDIRECTIONAL);
if (ret)
goto e_key;
if (aes->mode != CCP_AES_MODE_ECB) {
- /* Load the AES context - conver to LE */
- dm_offset = CCP_KSB_BYTES - AES_BLOCK_SIZE;
+ /* Load the AES context - convert to LE */
+ dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE;
ccp_set_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len);
- ret = ccp_copy_to_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_ctx;
op.soc = 1;
}
- ret = cmd_q->ccp->vdata->perform->perform_aes(&op);
+ ret = cmd_q->ccp->vdata->perform->aes(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
/* Retrieve the AES context - convert from LE to BE using
* 32-byte (256-bit) byteswapping
*/
- ret = ccp_copy_from_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
}
/* ...but we only need AES_BLOCK_SIZE bytes */
- dm_offset = CCP_KSB_BYTES - AES_BLOCK_SIZE;
+ dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE;
ccp_get_dm_area(&ctx, dm_offset, aes->iv, 0, aes->iv_len);
}
if (!xts->key || !xts->iv || !xts->src || !xts->dst)
return -EINVAL;
- BUILD_BUG_ON(CCP_XTS_AES_KEY_KSB_COUNT != 1);
- BUILD_BUG_ON(CCP_XTS_AES_CTX_KSB_COUNT != 1);
+ BUILD_BUG_ON(CCP_XTS_AES_KEY_SB_COUNT != 1);
+ BUILD_BUG_ON(CCP_XTS_AES_CTX_SB_COUNT != 1);
ret = -EIO;
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
- op.jobid = ccp_gen_jobid(cmd_q->ccp);
- op.ksb_key = cmd_q->ksb_key;
- op.ksb_ctx = cmd_q->ksb_ctx;
+ op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
+ op.sb_key = cmd_q->sb_key;
+ op.sb_ctx = cmd_q->sb_ctx;
op.init = 1;
op.u.xts.action = xts->action;
op.u.xts.unit_size = xts->unit_size;
- /* All supported key sizes fit in a single (32-byte) KSB entry
+ /* All supported key sizes fit in a single (32-byte) SB entry
* and must be in little endian format. Use the 256-bit byte
* swap passthru option to convert from big endian to little
* endian.
*/
ret = ccp_init_dm_workarea(&key, cmd_q,
- CCP_XTS_AES_KEY_KSB_COUNT * CCP_KSB_BYTES,
+ CCP_XTS_AES_KEY_SB_COUNT * CCP_SB_BYTES,
DMA_TO_DEVICE);
if (ret)
return ret;
- dm_offset = CCP_KSB_BYTES - AES_KEYSIZE_128;
+ dm_offset = CCP_SB_BYTES - AES_KEYSIZE_128;
ccp_set_dm_area(&key, dm_offset, xts->key, 0, xts->key_len);
ccp_set_dm_area(&key, 0, xts->key, dm_offset, xts->key_len);
- ret = ccp_copy_to_ksb(cmd_q, &key, op.jobid, op.ksb_key,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_to_sb(cmd_q, &key, op.jobid, op.sb_key,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_key;
}
- /* The AES context fits in a single (32-byte) KSB entry and
+ /* The AES context fits in a single (32-byte) SB entry and
* for XTS is already in little endian format so no byte swapping
* is needed.
*/
ret = ccp_init_dm_workarea(&ctx, cmd_q,
- CCP_XTS_AES_CTX_KSB_COUNT * CCP_KSB_BYTES,
+ CCP_XTS_AES_CTX_SB_COUNT * CCP_SB_BYTES,
DMA_BIDIRECTIONAL);
if (ret)
goto e_key;
ccp_set_dm_area(&ctx, 0, xts->iv, 0, xts->iv_len);
- ret = ccp_copy_to_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_NOOP);
+ ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_NOOP);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_ctx;
if (!src.sg_wa.bytes_left)
op.eom = 1;
- ret = cmd_q->ccp->vdata->perform->perform_xts_aes(&op);
+ ret = cmd_q->ccp->vdata->perform->xts_aes(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
/* Retrieve the AES context - convert from LE to BE using
* 32-byte (256-bit) byteswapping
*/
- ret = ccp_copy_from_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
}
/* ...but we only need AES_BLOCK_SIZE bytes */
- dm_offset = CCP_KSB_BYTES - AES_BLOCK_SIZE;
+ dm_offset = CCP_SB_BYTES - AES_BLOCK_SIZE;
ccp_get_dm_area(&ctx, dm_offset, xts->iv, 0, xts->iv_len);
e_dst:
struct ccp_dm_workarea ctx;
struct ccp_data src;
struct ccp_op op;
+ unsigned int ioffset, ooffset;
+ unsigned int digest_size;
+ int sb_count;
+ const void *init;
+ u64 block_size;
+ int ctx_size;
int ret;
- if (sha->ctx_len != CCP_SHA_CTXSIZE)
+ switch (sha->type) {
+ case CCP_SHA_TYPE_1:
+ if (sha->ctx_len < SHA1_DIGEST_SIZE)
+ return -EINVAL;
+ block_size = SHA1_BLOCK_SIZE;
+ break;
+ case CCP_SHA_TYPE_224:
+ if (sha->ctx_len < SHA224_DIGEST_SIZE)
+ return -EINVAL;
+ block_size = SHA224_BLOCK_SIZE;
+ break;
+ case CCP_SHA_TYPE_256:
+ if (sha->ctx_len < SHA256_DIGEST_SIZE)
+ return -EINVAL;
+ block_size = SHA256_BLOCK_SIZE;
+ break;
+ default:
return -EINVAL;
+ }
if (!sha->ctx)
return -EINVAL;
- if (!sha->final && (sha->src_len & (CCP_SHA_BLOCKSIZE - 1)))
+ if (!sha->final && (sha->src_len & (block_size - 1)))
return -EINVAL;
- if (!sha->src_len) {
- const u8 *sha_zero;
+ /* The version 3 device can't handle zero-length input */
+ if (cmd_q->ccp->vdata->version == CCP_VERSION(3, 0)) {
- /* Not final, just return */
- if (!sha->final)
- return 0;
+ if (!sha->src_len) {
+ unsigned int digest_len;
+ const u8 *sha_zero;
- /* CCP can't do a zero length sha operation so the caller
- * must buffer the data.
- */
- if (sha->msg_bits)
- return -EINVAL;
+ /* Not final, just return */
+ if (!sha->final)
+ return 0;
- /* The CCP cannot perform zero-length sha operations so the
- * caller is required to buffer data for the final operation.
- * However, a sha operation for a message with a total length
- * of zero is valid so known values are required to supply
- * the result.
- */
- switch (sha->type) {
- case CCP_SHA_TYPE_1:
- sha_zero = sha1_zero_message_hash;
- break;
- case CCP_SHA_TYPE_224:
- sha_zero = sha224_zero_message_hash;
- break;
- case CCP_SHA_TYPE_256:
- sha_zero = sha256_zero_message_hash;
- break;
- default:
- return -EINVAL;
- }
+ /* CCP can't do a zero length sha operation so the
+ * caller must buffer the data.
+ */
+ if (sha->msg_bits)
+ return -EINVAL;
+
+ /* The CCP cannot perform zero-length sha operations
+ * so the caller is required to buffer data for the
+ * final operation. However, a sha operation for a
+ * message with a total length of zero is valid so
+ * known values are required to supply the result.
+ */
+ switch (sha->type) {
+ case CCP_SHA_TYPE_1:
+ sha_zero = sha1_zero_message_hash;
+ digest_len = SHA1_DIGEST_SIZE;
+ break;
+ case CCP_SHA_TYPE_224:
+ sha_zero = sha224_zero_message_hash;
+ digest_len = SHA224_DIGEST_SIZE;
+ break;
+ case CCP_SHA_TYPE_256:
+ sha_zero = sha256_zero_message_hash;
+ digest_len = SHA256_DIGEST_SIZE;
+ break;
+ default:
+ return -EINVAL;
+ }
- scatterwalk_map_and_copy((void *)sha_zero, sha->ctx, 0,
- sha->ctx_len, 1);
+ scatterwalk_map_and_copy((void *)sha_zero, sha->ctx, 0,
+ digest_len, 1);
- return 0;
+ return 0;
+ }
}
- if (!sha->src)
- return -EINVAL;
+ /* Set variables used throughout */
+ switch (sha->type) {
+ case CCP_SHA_TYPE_1:
+ digest_size = SHA1_DIGEST_SIZE;
+ init = (void *) ccp_sha1_init;
+ ctx_size = SHA1_DIGEST_SIZE;
+ sb_count = 1;
+ if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0))
+ ooffset = ioffset = CCP_SB_BYTES - SHA1_DIGEST_SIZE;
+ else
+ ooffset = ioffset = 0;
+ break;
+ case CCP_SHA_TYPE_224:
+ digest_size = SHA224_DIGEST_SIZE;
+ init = (void *) ccp_sha224_init;
+ ctx_size = SHA256_DIGEST_SIZE;
+ sb_count = 1;
+ ioffset = 0;
+ if (cmd_q->ccp->vdata->version != CCP_VERSION(3, 0))
+ ooffset = CCP_SB_BYTES - SHA224_DIGEST_SIZE;
+ else
+ ooffset = 0;
+ break;
+ case CCP_SHA_TYPE_256:
+ digest_size = SHA256_DIGEST_SIZE;
+ init = (void *) ccp_sha256_init;
+ ctx_size = SHA256_DIGEST_SIZE;
+ sb_count = 1;
+ ooffset = ioffset = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ goto e_data;
+ }
- BUILD_BUG_ON(CCP_SHA_KSB_COUNT != 1);
+ /* For zero-length plaintext the src pointer is ignored;
+ * otherwise both parts must be valid
+ */
+ if (sha->src_len && !sha->src)
+ return -EINVAL;
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
- op.jobid = ccp_gen_jobid(cmd_q->ccp);
- op.ksb_ctx = cmd_q->ksb_ctx;
+ op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
+ op.sb_ctx = cmd_q->sb_ctx; /* Pre-allocated */
op.u.sha.type = sha->type;
op.u.sha.msg_bits = sha->msg_bits;
- /* The SHA context fits in a single (32-byte) KSB entry and
- * must be in little endian format. Use the 256-bit byte swap
- * passthru option to convert from big endian to little endian.
- */
- ret = ccp_init_dm_workarea(&ctx, cmd_q,
- CCP_SHA_KSB_COUNT * CCP_KSB_BYTES,
+ ret = ccp_init_dm_workarea(&ctx, cmd_q, sb_count * CCP_SB_BYTES,
DMA_BIDIRECTIONAL);
if (ret)
return ret;
-
if (sha->first) {
- const __be32 *init;
-
switch (sha->type) {
case CCP_SHA_TYPE_1:
- init = ccp_sha1_init;
- break;
case CCP_SHA_TYPE_224:
- init = ccp_sha224_init;
- break;
case CCP_SHA_TYPE_256:
- init = ccp_sha256_init;
+ memcpy(ctx.address + ioffset, init, ctx_size);
break;
default:
ret = -EINVAL;
goto e_ctx;
}
- memcpy(ctx.address, init, CCP_SHA_CTXSIZE);
} else {
- ccp_set_dm_area(&ctx, 0, sha->ctx, 0, sha->ctx_len);
+ /* Restore the context */
+ ccp_set_dm_area(&ctx, 0, sha->ctx, 0,
+ sb_count * CCP_SB_BYTES);
}
- ret = ccp_copy_to_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_to_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_ctx;
}
- /* Send data to the CCP SHA engine */
- ret = ccp_init_data(&src, cmd_q, sha->src, sha->src_len,
- CCP_SHA_BLOCKSIZE, DMA_TO_DEVICE);
- if (ret)
- goto e_ctx;
+ if (sha->src) {
+ /* Send data to the CCP SHA engine; block_size is set above */
+ ret = ccp_init_data(&src, cmd_q, sha->src, sha->src_len,
+ block_size, DMA_TO_DEVICE);
+ if (ret)
+ goto e_ctx;
- while (src.sg_wa.bytes_left) {
- ccp_prepare_data(&src, NULL, &op, CCP_SHA_BLOCKSIZE, false);
- if (sha->final && !src.sg_wa.bytes_left)
- op.eom = 1;
+ while (src.sg_wa.bytes_left) {
+ ccp_prepare_data(&src, NULL, &op, block_size, false);
+ if (sha->final && !src.sg_wa.bytes_left)
+ op.eom = 1;
+
+ ret = cmd_q->ccp->vdata->perform->sha(&op);
+ if (ret) {
+ cmd->engine_error = cmd_q->cmd_error;
+ goto e_data;
+ }
- ret = cmd_q->ccp->vdata->perform->perform_sha(&op);
+ ccp_process_data(&src, NULL, &op);
+ }
+ } else {
+ op.eom = 1;
+ ret = cmd_q->ccp->vdata->perform->sha(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_data;
}
-
- ccp_process_data(&src, NULL, &op);
}
/* Retrieve the SHA context - convert from LE to BE using
* 32-byte (256-bit) byteswapping to BE
*/
- ret = ccp_copy_from_ksb(cmd_q, &ctx, op.jobid, op.ksb_ctx,
- CCP_PASSTHRU_BYTESWAP_256BIT);
+ ret = ccp_copy_from_sb(cmd_q, &ctx, op.jobid, op.sb_ctx,
+ CCP_PASSTHRU_BYTESWAP_256BIT);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_data;
}
- ccp_get_dm_area(&ctx, 0, sha->ctx, 0, sha->ctx_len);
-
- if (sha->final && sha->opad) {
- /* HMAC operation, recursively perform final SHA */
- struct ccp_cmd hmac_cmd;
- struct scatterlist sg;
- u64 block_size, digest_size;
- u8 *hmac_buf;
-
+ if (sha->final) {
+ /* Finishing up, so get the digest */
switch (sha->type) {
case CCP_SHA_TYPE_1:
- block_size = SHA1_BLOCK_SIZE;
- digest_size = SHA1_DIGEST_SIZE;
- break;
case CCP_SHA_TYPE_224:
- block_size = SHA224_BLOCK_SIZE;
- digest_size = SHA224_DIGEST_SIZE;
- break;
case CCP_SHA_TYPE_256:
- block_size = SHA256_BLOCK_SIZE;
- digest_size = SHA256_DIGEST_SIZE;
+ ccp_get_dm_area(&ctx, ooffset,
+ sha->ctx, 0,
+ digest_size);
break;
default:
ret = -EINVAL;
- goto e_data;
+ goto e_ctx;
}
+ } else {
+ /* Stash the context */
+ ccp_get_dm_area(&ctx, 0, sha->ctx, 0,
+ sb_count * CCP_SB_BYTES);
+ }
+
+ if (sha->final && sha->opad) {
+ /* HMAC operation, recursively perform final SHA */
+ struct ccp_cmd hmac_cmd;
+ struct scatterlist sg;
+ u8 *hmac_buf;
if (sha->opad_len != block_size) {
ret = -EINVAL;
sg_init_one(&sg, hmac_buf, block_size + digest_size);
scatterwalk_map_and_copy(hmac_buf, sha->opad, 0, block_size, 0);
- memcpy(hmac_buf + block_size, ctx.address, digest_size);
+ switch (sha->type) {
+ case CCP_SHA_TYPE_1:
+ case CCP_SHA_TYPE_224:
+ case CCP_SHA_TYPE_256:
+ memcpy(hmac_buf + block_size,
+ ctx.address + ooffset,
+ digest_size);
+ break;
+ default:
+ ret = -EINVAL;
+ goto e_ctx;
+ }
memset(&hmac_cmd, 0, sizeof(hmac_cmd));
hmac_cmd.engine = CCP_ENGINE_SHA;
}
e_data:
- ccp_free_data(&src, cmd_q);
+ if (sha->src)
+ ccp_free_data(&src, cmd_q);
e_ctx:
ccp_dm_free(&ctx);
struct ccp_dm_workarea exp, src;
struct ccp_data dst;
struct ccp_op op;
- unsigned int ksb_count, i_len, o_len;
+ unsigned int sb_count, i_len, o_len;
int ret;
if (rsa->key_size > CCP_RSA_MAX_WIDTH)
o_len = ((rsa->key_size + 255) / 256) * 32;
i_len = o_len * 2;
- ksb_count = o_len / CCP_KSB_BYTES;
+ sb_count = o_len / CCP_SB_BYTES;
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
op.jobid = ccp_gen_jobid(cmd_q->ccp);
- op.ksb_key = ccp_alloc_ksb(cmd_q->ccp, ksb_count);
- if (!op.ksb_key)
+ op.sb_key = cmd_q->ccp->vdata->perform->sballoc(cmd_q, sb_count);
+
+ if (!op.sb_key)
return -EIO;
- /* The RSA exponent may span multiple (32-byte) KSB entries and must
+ /* The RSA exponent may span multiple (32-byte) SB entries and must
* be in little endian format. Reverse copy each 32-byte chunk
* of the exponent (En chunk to E0 chunk, E(n-1) chunk to E1 chunk)
* and each byte within that chunk and do not perform any byte swap
*/
ret = ccp_init_dm_workarea(&exp, cmd_q, o_len, DMA_TO_DEVICE);
if (ret)
- goto e_ksb;
+ goto e_sb;
ret = ccp_reverse_set_dm_area(&exp, rsa->exp, rsa->exp_len,
- CCP_KSB_BYTES, false);
+ CCP_SB_BYTES, false);
if (ret)
goto e_exp;
- ret = ccp_copy_to_ksb(cmd_q, &exp, op.jobid, op.ksb_key,
- CCP_PASSTHRU_BYTESWAP_NOOP);
+ ret = ccp_copy_to_sb(cmd_q, &exp, op.jobid, op.sb_key,
+ CCP_PASSTHRU_BYTESWAP_NOOP);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_exp;
goto e_exp;
ret = ccp_reverse_set_dm_area(&src, rsa->mod, rsa->mod_len,
- CCP_KSB_BYTES, false);
+ CCP_SB_BYTES, false);
if (ret)
goto e_src;
src.address += o_len; /* Adjust the address for the copy operation */
ret = ccp_reverse_set_dm_area(&src, rsa->src, rsa->src_len,
- CCP_KSB_BYTES, false);
+ CCP_SB_BYTES, false);
if (ret)
goto e_src;
src.address -= o_len; /* Reset the address to original value */
op.u.rsa.mod_size = rsa->key_size;
op.u.rsa.input_len = i_len;
- ret = cmd_q->ccp->vdata->perform->perform_rsa(&op);
+ ret = cmd_q->ccp->vdata->perform->rsa(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
e_exp:
ccp_dm_free(&exp);
-e_ksb:
- ccp_free_ksb(cmd_q->ccp, op.ksb_key, ksb_count);
+e_sb:
+ cmd_q->ccp->vdata->perform->sbfree(cmd_q, op.sb_key, sb_count);
return ret;
}
struct ccp_op op;
bool in_place = false;
unsigned int i;
- int ret;
+ int ret = 0;
if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1)))
return -EINVAL;
return -EINVAL;
}
- BUILD_BUG_ON(CCP_PASSTHRU_KSB_COUNT != 1);
+ BUILD_BUG_ON(CCP_PASSTHRU_SB_COUNT != 1);
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
- op.jobid = ccp_gen_jobid(cmd_q->ccp);
+ op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) {
/* Load the mask */
- op.ksb_key = cmd_q->ksb_key;
+ op.sb_key = cmd_q->sb_key;
ret = ccp_init_dm_workarea(&mask, cmd_q,
- CCP_PASSTHRU_KSB_COUNT *
- CCP_KSB_BYTES,
+ CCP_PASSTHRU_SB_COUNT *
+ CCP_SB_BYTES,
DMA_TO_DEVICE);
if (ret)
return ret;
ccp_set_dm_area(&mask, 0, pt->mask, 0, pt->mask_len);
- ret = ccp_copy_to_ksb(cmd_q, &mask, op.jobid, op.ksb_key,
- CCP_PASSTHRU_BYTESWAP_NOOP);
+ ret = ccp_copy_to_sb(cmd_q, &mask, op.jobid, op.sb_key,
+ CCP_PASSTHRU_BYTESWAP_NOOP);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_mask;
op.dst.u.dma.offset = dst.sg_wa.sg_used;
op.dst.u.dma.length = op.src.u.dma.length;
- ret = cmd_q->ccp->vdata->perform->perform_passthru(&op);
+ ret = cmd_q->ccp->vdata->perform->passthru(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
return -EINVAL;
}
- BUILD_BUG_ON(CCP_PASSTHRU_KSB_COUNT != 1);
+ BUILD_BUG_ON(CCP_PASSTHRU_SB_COUNT != 1);
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) {
/* Load the mask */
- op.ksb_key = cmd_q->ksb_key;
+ op.sb_key = cmd_q->sb_key;
mask.length = pt->mask_len;
mask.dma.address = pt->mask;
mask.dma.length = pt->mask_len;
- ret = ccp_copy_to_ksb(cmd_q, &mask, op.jobid, op.ksb_key,
+ ret = ccp_copy_to_sb(cmd_q, &mask, op.jobid, op.sb_key,
CCP_PASSTHRU_BYTESWAP_NOOP);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
op.dst.u.dma.offset = 0;
op.dst.u.dma.length = pt->src_len;
- ret = cmd_q->ccp->vdata->perform->perform_passthru(&op);
+ ret = cmd_q->ccp->vdata->perform->passthru(&op);
if (ret)
cmd->engine_error = cmd_q->cmd_error;
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
- op.jobid = ccp_gen_jobid(cmd_q->ccp);
+ op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
/* Concatenate the modulus and the operands. Both the modulus and
* the operands must be in little endian format. Since the input
op.u.ecc.function = cmd->u.ecc.function;
- ret = cmd_q->ccp->vdata->perform->perform_ecc(&op);
+ ret = cmd_q->ccp->vdata->perform->ecc(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
memset(&op, 0, sizeof(op));
op.cmd_q = cmd_q;
- op.jobid = ccp_gen_jobid(cmd_q->ccp);
+ op.jobid = CCP_NEW_JOBID(cmd_q->ccp);
/* Concatenate the modulus and the operands. Both the modulus and
* the operands must be in little endian format. Since the input
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
- /* Set the first point Z coordianate to 1 */
+ /* Set the first point Z coordinate to 1 */
*src.address = 0x01;
src.address += CCP_ECC_OPERAND_SIZE;
goto e_src;
src.address += CCP_ECC_OPERAND_SIZE;
- /* Set the second point Z coordianate to 1 */
+ /* Set the second point Z coordinate to 1 */
*src.address = 0x01;
src.address += CCP_ECC_OPERAND_SIZE;
} else {
op.u.ecc.function = cmd->u.ecc.function;
- ret = cmd_q->ccp->vdata->perform->perform_ecc(&op);
+ ret = cmd_q->ccp->vdata->perform->ecc(&op);
if (ret) {
cmd->engine_error = cmd_q->cmd_error;
goto e_dst;
cmd->engine_error = 0;
cmd_q->cmd_error = 0;
cmd_q->int_rcvd = 0;
- cmd_q->free_slots = CMD_Q_DEPTH(ioread32(cmd_q->reg_status));
+ cmd_q->free_slots = cmd_q->ccp->vdata->perform->get_free_slots(cmd_q);
switch (cmd->engine) {
case CCP_ENGINE_AES:
projects / cascardo / linux.git / blobdiff