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-rw-r--r--drivers/crypto/Kconfig26
-rw-r--r--drivers/crypto/Makefile2
-rw-r--r--drivers/crypto/hifn_795x.c367
-rw-r--r--drivers/crypto/ixp4xx_crypto.c1506
-rw-r--r--drivers/crypto/padlock-aes.c4
-rw-r--r--drivers/crypto/padlock-sha.c4
-rw-r--r--drivers/crypto/talitos.c1597
-rw-r--r--drivers/crypto/talitos.h199
8 files changed, 3515 insertions, 190 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 43b71b69daa5..e522144cba3a 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -174,4 +174,30 @@ config CRYPTO_DEV_HIFN_795X_RNG
Select this option if you want to enable the random number generator
on the HIFN 795x crypto adapters.
+config CRYPTO_DEV_TALITOS
+ tristate "Talitos Freescale Security Engine (SEC)"
+ select CRYPTO_ALGAPI
+ select CRYPTO_AUTHENC
+ select HW_RANDOM
+ depends on FSL_SOC
+ help
+ Say 'Y' here to use the Freescale Security Engine (SEC)
+ to offload cryptographic algorithm computation.
+
+ The Freescale SEC is present on PowerQUICC 'E' processors, such
+ as the MPC8349E and MPC8548E.
+
+ To compile this driver as a module, choose M here: the module
+ will be called talitos.
+
+config CRYPTO_DEV_IXP4XX
+ tristate "Driver for IXP4xx crypto hardware acceleration"
+ depends on ARCH_IXP4XX
+ select CRYPTO_DES
+ select CRYPTO_ALGAPI
+ select CRYPTO_AUTHENC
+ select CRYPTO_BLKCIPHER
+ help
+ Driver for the IXP4xx NPE crypto engine.
+
endif # CRYPTO_HW
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index c0327f0dadc5..73557b2968d3 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -2,3 +2,5 @@ obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o
obj-$(CONFIG_CRYPTO_DEV_PADLOCK_SHA) += padlock-sha.o
obj-$(CONFIG_CRYPTO_DEV_GEODE) += geode-aes.o
obj-$(CONFIG_CRYPTO_DEV_HIFN_795X) += hifn_795x.o
+obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o
+obj-$(CONFIG_CRYPTO_DEV_IXP4XX) += ixp4xx_crypto.o
diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index 81f3f950cd7d..4d22b21bd3e3 100644
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -29,7 +29,6 @@
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include <linux/highmem.h>
-#include <linux/interrupt.h>
#include <linux/crypto.h>
#include <linux/hw_random.h>
#include <linux/ktime.h>
@@ -369,7 +368,9 @@ static atomic_t hifn_dev_number;
#define HIFN_D_DST_RSIZE 80*4
#define HIFN_D_RES_RSIZE 24*4
-#define HIFN_QUEUE_LENGTH HIFN_D_CMD_RSIZE-5
+#define HIFN_D_DST_DALIGN 4
+
+#define HIFN_QUEUE_LENGTH HIFN_D_CMD_RSIZE-1
#define AES_MIN_KEY_SIZE 16
#define AES_MAX_KEY_SIZE 32
@@ -535,10 +536,10 @@ struct hifn_crypt_command
*/
struct hifn_mac_command
{
- volatile u16 masks;
- volatile u16 header_skip;
- volatile u16 source_count;
- volatile u16 reserved;
+ volatile __le16 masks;
+ volatile __le16 header_skip;
+ volatile __le16 source_count;
+ volatile __le16 reserved;
};
#define HIFN_MAC_CMD_ALG_MASK 0x0001
@@ -564,10 +565,10 @@ struct hifn_mac_command
struct hifn_comp_command
{
- volatile u16 masks;
- volatile u16 header_skip;
- volatile u16 source_count;
- volatile u16 reserved;
+ volatile __le16 masks;
+ volatile __le16 header_skip;
+ volatile __le16 source_count;
+ volatile __le16 reserved;
};
#define HIFN_COMP_CMD_SRCLEN_M 0xc000
@@ -583,10 +584,10 @@ struct hifn_comp_command
struct hifn_base_result
{
- volatile u16 flags;
- volatile u16 session;
- volatile u16 src_cnt; /* 15:0 of source count */
- volatile u16 dst_cnt; /* 15:0 of dest count */
+ volatile __le16 flags;
+ volatile __le16 session;
+ volatile __le16 src_cnt; /* 15:0 of source count */
+ volatile __le16 dst_cnt; /* 15:0 of dest count */
};
#define HIFN_BASE_RES_DSTOVERRUN 0x0200 /* destination overrun */
@@ -597,8 +598,8 @@ struct hifn_base_result
struct hifn_comp_result
{
- volatile u16 flags;
- volatile u16 crc;
+ volatile __le16 flags;
+ volatile __le16 crc;
};
#define HIFN_COMP_RES_LCB_M 0xff00 /* longitudinal check byte */
@@ -609,8 +610,8 @@ struct hifn_comp_result
struct hifn_mac_result
{
- volatile u16 flags;
- volatile u16 reserved;
+ volatile __le16 flags;
+ volatile __le16 reserved;
/* followed by 0, 6, 8, or 10 u16's of the MAC, then crypt */
};
@@ -619,8 +620,8 @@ struct hifn_mac_result
struct hifn_crypt_result
{
- volatile u16 flags;
- volatile u16 reserved;
+ volatile __le16 flags;
+ volatile __le16 reserved;
};
#define HIFN_CRYPT_RES_SRC_NOTZERO 0x0001 /* source expired */
@@ -686,12 +687,12 @@ static inline u32 hifn_read_1(struct hifn_device *dev, u32 reg)
static inline void hifn_write_0(struct hifn_device *dev, u32 reg, u32 val)
{
- writel(val, dev->bar[0] + reg);
+ writel((__force u32)cpu_to_le32(val), dev->bar[0] + reg);
}
static inline void hifn_write_1(struct hifn_device *dev, u32 reg, u32 val)
{
- writel(val, dev->bar[1] + reg);
+ writel((__force u32)cpu_to_le32(val), dev->bar[1] + reg);
}
static void hifn_wait_puc(struct hifn_device *dev)
@@ -894,7 +895,7 @@ static int hifn_enable_crypto(struct hifn_device *dev)
char *offtbl = NULL;
int i;
- for (i = 0; i < sizeof(pci2id)/sizeof(pci2id[0]); i++) {
+ for (i = 0; i < ARRAY_SIZE(pci2id); i++) {
if (pci2id[i].pci_vendor == dev->pdev->vendor &&
pci2id[i].pci_prod == dev->pdev->device) {
offtbl = pci2id[i].card_id;
@@ -1037,14 +1038,14 @@ static void hifn_init_registers(struct hifn_device *dev)
hifn_write_0(dev, HIFN_0_PUIER, HIFN_PUIER_DSTOVER);
/* write all 4 ring address registers */
- hifn_write_1(dev, HIFN_1_DMA_CRAR, __cpu_to_le32(dptr +
- offsetof(struct hifn_dma, cmdr[0])));
- hifn_write_1(dev, HIFN_1_DMA_SRAR, __cpu_to_le32(dptr +
- offsetof(struct hifn_dma, srcr[0])));
- hifn_write_1(dev, HIFN_1_DMA_DRAR, __cpu_to_le32(dptr +
- offsetof(struct hifn_dma, dstr[0])));
- hifn_write_1(dev, HIFN_1_DMA_RRAR, __cpu_to_le32(dptr +
- offsetof(struct hifn_dma, resr[0])));
+ hifn_write_1(dev, HIFN_1_DMA_CRAR, dptr +
+ offsetof(struct hifn_dma, cmdr[0]));
+ hifn_write_1(dev, HIFN_1_DMA_SRAR, dptr +
+ offsetof(struct hifn_dma, srcr[0]));
+ hifn_write_1(dev, HIFN_1_DMA_DRAR, dptr +
+ offsetof(struct hifn_dma, dstr[0]));
+ hifn_write_1(dev, HIFN_1_DMA_RRAR, dptr +
+ offsetof(struct hifn_dma, resr[0]));
mdelay(2);
#if 0
@@ -1166,109 +1167,15 @@ static int hifn_setup_crypto_command(struct hifn_device *dev,
return cmd_len;
}
-static int hifn_setup_src_desc(struct hifn_device *dev, struct page *page,
- unsigned int offset, unsigned int size)
-{
- struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
- int idx;
- dma_addr_t addr;
-
- addr = pci_map_page(dev->pdev, page, offset, size, PCI_DMA_TODEVICE);
-
- idx = dma->srci;
-
- dma->srcr[idx].p = __cpu_to_le32(addr);
- dma->srcr[idx].l = __cpu_to_le32(size) | HIFN_D_VALID |
- HIFN_D_MASKDONEIRQ | HIFN_D_NOINVALID | HIFN_D_LAST;
-
- if (++idx == HIFN_D_SRC_RSIZE) {
- dma->srcr[idx].l = __cpu_to_le32(HIFN_D_VALID |
- HIFN_D_JUMP |
- HIFN_D_MASKDONEIRQ | HIFN_D_LAST);
- idx = 0;
- }
-
- dma->srci = idx;
- dma->srcu++;
-
- if (!(dev->flags & HIFN_FLAG_SRC_BUSY)) {
- hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA);
- dev->flags |= HIFN_FLAG_SRC_BUSY;
- }
-
- return size;
-}
-
-static void hifn_setup_res_desc(struct hifn_device *dev)
-{
- struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
-
- dma->resr[dma->resi].l = __cpu_to_le32(HIFN_USED_RESULT |
- HIFN_D_VALID | HIFN_D_LAST);
- /*
- * dma->resr[dma->resi].l = __cpu_to_le32(HIFN_MAX_RESULT | HIFN_D_VALID |
- * HIFN_D_LAST | HIFN_D_NOINVALID);
- */
-
- if (++dma->resi == HIFN_D_RES_RSIZE) {
- dma->resr[HIFN_D_RES_RSIZE].l = __cpu_to_le32(HIFN_D_VALID |
- HIFN_D_JUMP | HIFN_D_MASKDONEIRQ | HIFN_D_LAST);
- dma->resi = 0;
- }
-
- dma->resu++;
-
- if (!(dev->flags & HIFN_FLAG_RES_BUSY)) {
- hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA);
- dev->flags |= HIFN_FLAG_RES_BUSY;
- }
-}
-
-static void hifn_setup_dst_desc(struct hifn_device *dev, struct page *page,
- unsigned offset, unsigned size)
-{
- struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
- int idx;
- dma_addr_t addr;
-
- addr = pci_map_page(dev->pdev, page, offset, size, PCI_DMA_FROMDEVICE);
-
- idx = dma->dsti;
- dma->dstr[idx].p = __cpu_to_le32(addr);
- dma->dstr[idx].l = __cpu_to_le32(size | HIFN_D_VALID |
- HIFN_D_MASKDONEIRQ | HIFN_D_NOINVALID | HIFN_D_LAST);
-
- if (++idx == HIFN_D_DST_RSIZE) {
- dma->dstr[idx].l = __cpu_to_le32(HIFN_D_VALID |
- HIFN_D_JUMP | HIFN_D_MASKDONEIRQ |
- HIFN_D_LAST | HIFN_D_NOINVALID);
- idx = 0;
- }
- dma->dsti = idx;
- dma->dstu++;
-
- if (!(dev->flags & HIFN_FLAG_DST_BUSY)) {
- hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA);
- dev->flags |= HIFN_FLAG_DST_BUSY;
- }
-}
-
-static int hifn_setup_dma(struct hifn_device *dev, struct page *spage, unsigned int soff,
- struct page *dpage, unsigned int doff, unsigned int nbytes, void *priv,
- struct hifn_context *ctx)
+static int hifn_setup_cmd_desc(struct hifn_device *dev,
+ struct hifn_context *ctx, void *priv, unsigned int nbytes)
{
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
int cmd_len, sa_idx;
u8 *buf, *buf_pos;
u16 mask;
- dprintk("%s: spage: %p, soffset: %u, dpage: %p, doffset: %u, nbytes: %u, priv: %p, ctx: %p.\n",
- dev->name, spage, soff, dpage, doff, nbytes, priv, ctx);
-
- sa_idx = dma->resi;
-
- hifn_setup_src_desc(dev, spage, soff, nbytes);
-
+ sa_idx = dma->cmdi;
buf_pos = buf = dma->command_bufs[dma->cmdi];
mask = 0;
@@ -1370,16 +1277,113 @@ static int hifn_setup_dma(struct hifn_device *dev, struct page *spage, unsigned
hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA);
dev->flags |= HIFN_FLAG_CMD_BUSY;
}
-
- hifn_setup_dst_desc(dev, dpage, doff, nbytes);
- hifn_setup_res_desc(dev);
-
return 0;
err_out:
return -EINVAL;
}
+static int hifn_setup_src_desc(struct hifn_device *dev, struct page *page,
+ unsigned int offset, unsigned int size)
+{
+ struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+ int idx;
+ dma_addr_t addr;
+
+ addr = pci_map_page(dev->pdev, page, offset, size, PCI_DMA_TODEVICE);
+
+ idx = dma->srci;
+
+ dma->srcr[idx].p = __cpu_to_le32(addr);
+ dma->srcr[idx].l = __cpu_to_le32(size | HIFN_D_VALID |
+ HIFN_D_MASKDONEIRQ | HIFN_D_LAST);
+
+ if (++idx == HIFN_D_SRC_RSIZE) {
+ dma->srcr[idx].l = __cpu_to_le32(HIFN_D_VALID |
+ HIFN_D_JUMP |
+ HIFN_D_MASKDONEIRQ | HIFN_D_LAST);
+ idx = 0;
+ }
+
+ dma->srci = idx;
+ dma->srcu++;
+
+ if (!(dev->flags & HIFN_FLAG_SRC_BUSY)) {
+ hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA);
+ dev->flags |= HIFN_FLAG_SRC_BUSY;
+ }
+
+ return size;
+}
+
+static void hifn_setup_res_desc(struct hifn_device *dev)
+{
+ struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+
+ dma->resr[dma->resi].l = __cpu_to_le32(HIFN_USED_RESULT |
+ HIFN_D_VALID | HIFN_D_LAST);
+ /*
+ * dma->resr[dma->resi].l = __cpu_to_le32(HIFN_MAX_RESULT | HIFN_D_VALID |
+ * HIFN_D_LAST);
+ */
+
+ if (++dma->resi == HIFN_D_RES_RSIZE) {
+ dma->resr[HIFN_D_RES_RSIZE].l = __cpu_to_le32(HIFN_D_VALID |
+ HIFN_D_JUMP | HIFN_D_MASKDONEIRQ | HIFN_D_LAST);
+ dma->resi = 0;
+ }
+
+ dma->resu++;
+
+ if (!(dev->flags & HIFN_FLAG_RES_BUSY)) {
+ hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA);
+ dev->flags |= HIFN_FLAG_RES_BUSY;
+ }
+}
+
+static void hifn_setup_dst_desc(struct hifn_device *dev, struct page *page,
+ unsigned offset, unsigned size)
+{
+ struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+ int idx;
+ dma_addr_t addr;
+
+ addr = pci_map_page(dev->pdev, page, offset, size, PCI_DMA_FROMDEVICE);
+
+ idx = dma->dsti;
+ dma->dstr[idx].p = __cpu_to_le32(addr);
+ dma->dstr[idx].l = __cpu_to_le32(size | HIFN_D_VALID |
+ HIFN_D_MASKDONEIRQ | HIFN_D_LAST);
+
+ if (++idx == HIFN_D_DST_RSIZE) {
+ dma->dstr[idx].l = __cpu_to_le32(HIFN_D_VALID |
+ HIFN_D_JUMP | HIFN_D_MASKDONEIRQ |
+ HIFN_D_LAST);
+ idx = 0;
+ }
+ dma->dsti = idx;
+ dma->dstu++;
+
+ if (!(dev->flags & HIFN_FLAG_DST_BUSY)) {
+ hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA);
+ dev->flags |= HIFN_FLAG_DST_BUSY;
+ }
+}
+
+static int hifn_setup_dma(struct hifn_device *dev, struct page *spage, unsigned int soff,
+ struct page *dpage, unsigned int doff, unsigned int nbytes, void *priv,
+ struct hifn_context *ctx)
+{
+ dprintk("%s: spage: %p, soffset: %u, dpage: %p, doffset: %u, nbytes: %u, priv: %p, ctx: %p.\n",
+ dev->name, spage, soff, dpage, doff, nbytes, priv, ctx);
+
+ hifn_setup_src_desc(dev, spage, soff, nbytes);
+ hifn_setup_cmd_desc(dev, ctx, priv, nbytes);
+ hifn_setup_dst_desc(dev, dpage, doff, nbytes);
+ hifn_setup_res_desc(dev);
+ return 0;
+}
+
static int ablkcipher_walk_init(struct ablkcipher_walk *w,
int num, gfp_t gfp_flags)
{
@@ -1431,7 +1435,7 @@ static int ablkcipher_add(void *daddr, unsigned int *drestp, struct scatterlist
return -EINVAL;
while (size) {
- copy = min(drest, src->length);
+ copy = min(drest, min(size, src->length));
saddr = kmap_atomic(sg_page(src), KM_SOFTIRQ1);
memcpy(daddr, saddr + src->offset, copy);
@@ -1458,10 +1462,6 @@ static int ablkcipher_add(void *daddr, unsigned int *drestp, struct scatterlist
static int ablkcipher_walk(struct ablkcipher_request *req,
struct ablkcipher_walk *w)
{
- unsigned blocksize =
- crypto_ablkcipher_blocksize(crypto_ablkcipher_reqtfm(req));
- unsigned alignmask =
- crypto_ablkcipher_alignmask(crypto_ablkcipher_reqtfm(req));
struct scatterlist *src, *dst, *t;
void *daddr;
unsigned int nbytes = req->nbytes, offset, copy, diff;
@@ -1477,16 +1477,14 @@ static int ablkcipher_walk(struct ablkcipher_request *req,
dst = &req->dst[idx];
dprintk("\n%s: slen: %u, dlen: %u, soff: %u, doff: %u, offset: %u, "
- "blocksize: %u, nbytes: %u.\n",
+ "nbytes: %u.\n",
__func__, src->length, dst->length, src->offset,
- dst->offset, offset, blocksize, nbytes);
-
- if (src->length & (blocksize - 1) ||
- src->offset & (alignmask - 1) ||
- dst->length & (blocksize - 1) ||
- dst->offset & (alignmask - 1) ||
- offset) {
- unsigned slen = src->length - offset;
+ dst->offset, offset, nbytes);
+
+ if (!IS_ALIGNED(dst->offset, HIFN_D_DST_DALIGN) ||
+ !IS_ALIGNED(dst->length, HIFN_D_DST_DALIGN) ||
+ offset) {
+ unsigned slen = min(src->length - offset, nbytes);
unsigned dlen = PAGE_SIZE;
t = &w->cache[idx];
@@ -1498,8 +1496,8 @@ static int ablkcipher_walk(struct ablkcipher_request *req,
idx += err;
- copy = slen & ~(blocksize - 1);
- diff = slen & (blocksize - 1);
+ copy = slen & ~(HIFN_D_DST_DALIGN - 1);
+ diff = slen & (HIFN_D_DST_DALIGN - 1);
if (dlen < nbytes) {
/*
@@ -1507,7 +1505,7 @@ static int ablkcipher_walk(struct ablkcipher_request *req,
* to put there additional blocksized chunk,
* so we mark that page as containing only
* blocksize aligned chunks:
- * t->length = (slen & ~(blocksize - 1));
+ * t->length = (slen & ~(HIFN_D_DST_DALIGN - 1));
* and increase number of bytes to be processed
* in next chunk:
* nbytes += diff;
@@ -1544,7 +1542,7 @@ static int ablkcipher_walk(struct ablkcipher_request *req,
kunmap_atomic(daddr, KM_SOFTIRQ0);
} else {
- nbytes -= src->length;
+ nbytes -= min(src->length, nbytes);
idx++;
}
@@ -1563,14 +1561,10 @@ static int hifn_setup_session(struct ablkcipher_request *req)
struct hifn_context *ctx = crypto_tfm_ctx(req->base.tfm);
struct hifn_device *dev = ctx->dev;
struct page *spage, *dpage;
- unsigned long soff, doff, flags;
+ unsigned long soff, doff, dlen, flags;
unsigned int nbytes = req->nbytes, idx = 0, len;
int err = -EINVAL, sg_num;
struct scatterlist *src, *dst, *t;
- unsigned blocksize =
- crypto_ablkcipher_blocksize(crypto_ablkcipher_reqtfm(req));
- unsigned alignmask =
- crypto_ablkcipher_alignmask(crypto_ablkcipher_reqtfm(req));
if (ctx->iv && !ctx->ivsize && ctx->mode != ACRYPTO_MODE_ECB)
goto err_out_exit;
@@ -1578,17 +1572,14 @@ static int hifn_setup_session(struct ablkcipher_request *req)
ctx->walk.flags = 0;
while (nbytes) {
- src = &req->src[idx];
dst = &req->dst[idx];
+ dlen = min(dst->length, nbytes);
- if (src->length & (blocksize - 1) ||
- src->offset & (alignmask - 1) ||
- dst->length & (blocksize - 1) ||
- dst->offset & (alignmask - 1)) {
+ if (!IS_ALIGNED(dst->offset, HIFN_D_DST_DALIGN) ||
+ !IS_ALIGNED(dlen, HIFN_D_DST_DALIGN))
ctx->walk.flags |= ASYNC_FLAGS_MISALIGNED;
- }
- nbytes -= src->length;
+ nbytes -= dlen;
idx++;
}
@@ -1602,7 +1593,10 @@ static int hifn_setup_session(struct ablkcipher_request *req)
idx = 0;
sg_num = ablkcipher_walk(req, &ctx->walk);
-
+ if (sg_num < 0) {
+ err = sg_num;
+ goto err_out_exit;
+ }
atomic_set(&ctx->sg_num, sg_num);
spin_lock_irqsave(&dev->lock, flags);
@@ -1640,7 +1634,7 @@ static int hifn_setup_session(struct ablkcipher_request *req)
if (err)
goto err_out;
- nbytes -= len;
+ nbytes -= min(len, nbytes);
}
dev->active = HIFN_DEFAULT_ACTIVE_NUM;
@@ -1651,7 +1645,7 @@ static int hifn_setup_session(struct ablkcipher_request *req)
err_out:
spin_unlock_irqrestore(&dev->lock, flags);
err_out_exit:
- if (err && printk_ratelimit())
+ if (err)
dprintk("%s: iv: %p [%d], key: %p [%d], mode: %u, op: %u, "
"type: %u, err: %d.\n",
dev->name, ctx->iv, ctx->ivsize,
@@ -1745,8 +1739,7 @@ static int ablkcipher_get(void *saddr, unsigned int *srestp, unsigned int offset
return -EINVAL;
while (size) {
-
- copy = min(dst->length, srest);
+ copy = min(srest, min(dst->length, size));
daddr = kmap_atomic(sg_page(dst), KM_IRQ0);
memcpy(daddr + dst->offset + offset, saddr, copy);
@@ -1803,7 +1796,7 @@ static void hifn_process_ready(struct ablkcipher_request *req, int error)
sg_page(dst), dst->length, nbytes);
if (!t->length) {
- nbytes -= dst->length;
+ nbytes -= min(dst->length, nbytes);
idx++;
continue;
}
@@ -2202,9 +2195,9 @@ static int hifn_setup_crypto(struct ablkcipher_request *req, u8 op,
return err;
if (dev->started < HIFN_QUEUE_LENGTH && dev->queue.qlen)
- err = hifn_process_queue(dev);
+ hifn_process_queue(dev);
- return err;
+ return -EINPROGRESS;
}
/*
@@ -2364,7 +2357,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
* 3DES ECB, CBC, CFB and OFB modes.
*/
{
- .name = "cfb(des3_ede)", .drv_name = "hifn-3des", .bsize = 8,
+ .name = "cfb(des3_ede)", .drv_name = "cfb-3des", .bsize = 8,
.ablkcipher = {
.min_keysize = HIFN_3DES_KEY_LENGTH,
.max_keysize = HIFN_3DES_KEY_LENGTH,
@@ -2374,7 +2367,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "ofb(des3_ede)", .drv_name = "hifn-3des", .bsize = 8,
+ .name = "ofb(des3_ede)", .drv_name = "ofb-3des", .bsize = 8,
.ablkcipher = {
.min_keysize = HIFN_3DES_KEY_LENGTH,
.max_keysize = HIFN_3DES_KEY_LENGTH,
@@ -2384,8 +2377,9 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "cbc(des3_ede)", .drv_name = "hifn-3des", .bsize = 8,
+ .name = "cbc(des3_ede)", .drv_name = "cbc-3des", .bsize = 8,
.ablkcipher = {
+ .ivsize = HIFN_IV_LENGTH,
.min_keysize = HIFN_3DES_KEY_LENGTH,
.max_keysize = HIFN_3DES_KEY_LENGTH,
.setkey = hifn_setkey,
@@ -2394,7 +2388,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "ecb(des3_ede)", .drv_name = "hifn-3des", .bsize = 8,
+ .name = "ecb(des3_ede)", .drv_name = "ecb-3des", .bsize = 8,
.ablkcipher = {
.min_keysize = HIFN_3DES_KEY_LENGTH,
.max_keysize = HIFN_3DES_KEY_LENGTH,
@@ -2408,7 +2402,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
* DES ECB, CBC, CFB and OFB modes.
*/
{
- .name = "cfb(des)", .drv_name = "hifn-des", .bsize = 8,
+ .name = "cfb(des)", .drv_name = "cfb-des", .bsize = 8,
.ablkcipher = {
.min_keysize = HIFN_DES_KEY_LENGTH,
.max_keysize = HIFN_DES_KEY_LENGTH,
@@ -2418,7 +2412,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "ofb(des)", .drv_name = "hifn-des", .bsize = 8,
+ .name = "ofb(des)", .drv_name = "ofb-des", .bsize = 8,
.ablkcipher = {
.min_keysize = HIFN_DES_KEY_LENGTH,
.max_keysize = HIFN_DES_KEY_LENGTH,
@@ -2428,8 +2422,9 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "cbc(des)", .drv_name = "hifn-des", .bsize = 8,
+ .name = "cbc(des)", .drv_name = "cbc-des", .bsize = 8,
.ablkcipher = {
+ .ivsize = HIFN_IV_LENGTH,
.min_keysize = HIFN_DES_KEY_LENGTH,
.max_keysize = HIFN_DES_KEY_LENGTH,
.setkey = hifn_setkey,
@@ -2438,7 +2433,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "ecb(des)", .drv_name = "hifn-des", .bsize = 8,
+ .name = "ecb(des)", .drv_name = "ecb-des", .bsize = 8,
.ablkcipher = {
.min_keysize = HIFN_DES_KEY_LENGTH,
.max_keysize = HIFN_DES_KEY_LENGTH,
@@ -2452,7 +2447,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
* AES ECB, CBC, CFB and OFB modes.
*/
{
- .name = "ecb(aes)", .drv_name = "hifn-aes", .bsize = 16,
+ .name = "ecb(aes)", .drv_name = "ecb-aes", .bsize = 16,
.ablkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
@@ -2462,8 +2457,9 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "cbc(aes)", .drv_name = "hifn-aes", .bsize = 16,
+ .name = "cbc(aes)", .drv_name = "cbc-aes", .bsize = 16,
.ablkcipher = {
+ .ivsize = HIFN_AES_IV_LENGTH,
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.setkey = hifn_setkey,
@@ -2472,7 +2468,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "cfb(aes)", .drv_name = "hifn-aes", .bsize = 16,
+ .name = "cfb(aes)", .drv_name = "cfb-aes", .bsize = 16,
.ablkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
@@ -2482,7 +2478,7 @@ static struct hifn_alg_template hifn_alg_templates[] = {
},
},
{
- .name = "ofb(aes)", .drv_name = "hifn-aes", .bsize = 16,
+ .name = "ofb(aes)", .drv_name = "ofb-aes", .bsize = 16,
.ablkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
@@ -2514,15 +2510,14 @@ static int hifn_alg_alloc(struct hifn_device *dev, struct hifn_alg_template *t)
return -ENOMEM;
snprintf(alg->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s", t->name);
- snprintf(alg->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", t->drv_name);
+ snprintf(alg->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s-%s",
+ t->drv_name, dev->name);
alg->alg.cra_priority = 300;
alg->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC;
alg->alg.cra_blocksize = t->bsize;
alg->alg.cra_ctxsize = sizeof(struct hifn_context);
- alg->alg.cra_alignmask = 15;
- if (t->bsize == 8)
- alg->alg.cra_alignmask = 3;
+ alg->alg.cra_alignmask = 0;
alg->alg.cra_type = &crypto_ablkcipher_type;
alg->alg.cra_module = THIS_MODULE;
alg->alg.cra_u.ablkcipher = t->ablkcipher;
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
new file mode 100644
index 000000000000..42a107fe9233
--- /dev/null
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -0,0 +1,1506 @@
+/*
+ * Intel IXP4xx NPE-C crypto driver
+ *
+ * Copyright (C) 2008 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/crypto.h>
+#include <linux/kernel.h>
+#include <linux/rtnetlink.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+
+#include <crypto/ctr.h>
+#include <crypto/des.h>
+#include <crypto/aes.h>
+#include <crypto/sha.h>
+#include <crypto/algapi.h>
+#include <crypto/aead.h>
+#include <crypto/authenc.h>
+#include <crypto/scatterwalk.h>
+
+#include <asm/arch/npe.h>
+#include <asm/arch/qmgr.h>
+
+#define MAX_KEYLEN 32
+
+/* hash: cfgword + 2 * digestlen; crypt: keylen + cfgword */
+#define NPE_CTX_LEN 80
+#define AES_BLOCK128 16
+
+#define NPE_OP_HASH_VERIFY 0x01
+#define NPE_OP_CCM_ENABLE 0x04
+#define NPE_OP_CRYPT_ENABLE 0x08
+#define NPE_OP_HASH_ENABLE 0x10
+#define NPE_OP_NOT_IN_PLACE 0x20
+#define NPE_OP_HMAC_DISABLE 0x40
+#define NPE_OP_CRYPT_ENCRYPT 0x80
+
+#define NPE_OP_CCM_GEN_MIC 0xcc
+#define NPE_OP_HASH_GEN_ICV 0x50
+#define NPE_OP_ENC_GEN_KEY 0xc9
+
+#define MOD_ECB 0x0000
+#define MOD_CTR 0x1000
+#define MOD_CBC_ENC 0x2000
+#define MOD_CBC_DEC 0x3000
+#define MOD_CCM_ENC 0x4000
+#define MOD_CCM_DEC 0x5000
+
+#define KEYLEN_128 4
+#define KEYLEN_192 6
+#define KEYLEN_256 8
+
+#define CIPH_DECR 0x0000
+#define CIPH_ENCR 0x0400
+
+#define MOD_DES 0x0000
+#define MOD_TDEA2 0x0100
+#define MOD_3DES 0x0200
+#define MOD_AES 0x0800
+#define MOD_AES128 (0x0800 | KEYLEN_128)
+#define MOD_AES192 (0x0900 | KEYLEN_192)
+#define MOD_AES256 (0x0a00 | KEYLEN_256)
+
+#define MAX_IVLEN 16
+#define NPE_ID 2 /* NPE C */
+#define NPE_QLEN 16
+/* Space for registering when the first
+ * NPE_QLEN crypt_ctl are busy */
+#define NPE_QLEN_TOTAL 64
+
+#define SEND_QID 29
+#define RECV_QID 30
+
+#define CTL_FLAG_UNUSED 0x0000
+#define CTL_FLAG_USED 0x1000
+#define CTL_FLAG_PERFORM_ABLK 0x0001
+#define CTL_FLAG_GEN_ICV 0x0002
+#define CTL_FLAG_GEN_REVAES 0x0004
+#define CTL_FLAG_PERFORM_AEAD 0x0008
+#define CTL_FLAG_MASK 0x000f
+
+#define HMAC_IPAD_VALUE 0x36
+#define HMAC_OPAD_VALUE 0x5C
+#define HMAC_PAD_BLOCKLEN SHA1_BLOCK_SIZE
+
+#define MD5_DIGEST_SIZE 16
+
+struct buffer_desc {
+ u32 phys_next;
+ u16 buf_len;
+ u16 pkt_len;
+ u32 phys_addr;
+ u32 __reserved[4];
+ struct buffer_desc *next;
+};
+
+struct crypt_ctl {
+ u8 mode; /* NPE_OP_* operation mode */
+ u8 init_len;
+ u16 reserved;
+ u8 iv[MAX_IVLEN]; /* IV for CBC mode or CTR IV for CTR mode */
+ u32 icv_rev_aes; /* icv or rev aes */
+ u32 src_buf;
+ u32 dst_buf;
+ u16 auth_offs; /* Authentication start offset */
+ u16 auth_len; /* Authentication data length */
+ u16 crypt_offs; /* Cryption start offset */
+ u16 crypt_len; /* Cryption data length */
+ u32 aadAddr; /* Additional Auth Data Addr for CCM mode */
+ u32 crypto_ctx; /* NPE Crypto Param structure address */
+
+ /* Used by Host: 4*4 bytes*/
+ unsigned ctl_flags;
+ union {
+ struct ablkcipher_request *ablk_req;
+ struct aead_request *aead_req;
+ struct crypto_tfm *tfm;
+ } data;
+ struct buffer_desc *regist_buf;
+ u8 *regist_ptr;
+};
+
+struct ablk_ctx {
+ struct buffer_desc *src;
+ struct buffer_desc *dst;
+ unsigned src_nents;
+ unsigned dst_nents;
+};
+
+struct aead_ctx {
+ struct buffer_desc *buffer;
+ unsigned short assoc_nents;
+ unsigned short src_nents;
+ struct scatterlist ivlist;
+ /* used when the hmac is not on one sg entry */
+ u8 *hmac_virt;
+ int encrypt;
+};
+
+struct ix_hash_algo {
+ u32 cfgword;
+ unsigned char *icv;
+};
+
+struct ix_sa_dir {
+ unsigned char *npe_ctx;
+ dma_addr_t npe_ctx_phys;
+ int npe_ctx_idx;
+ u8 npe_mode;
+};
+
+struct ixp_ctx {
+ struct ix_sa_dir encrypt;
+ struct ix_sa_dir decrypt;
+ int authkey_len;
+ u8 authkey[MAX_KEYLEN];
+ int enckey_len;
+ u8 enckey[MAX_KEYLEN];
+ u8 salt[MAX_IVLEN];
+ u8 nonce[CTR_RFC3686_NONCE_SIZE];
+ unsigned salted;
+ atomic_t configuring;
+ struct completion completion;
+};
+
+struct ixp_alg {
+ struct crypto_alg crypto;
+ const struct ix_hash_algo *hash;
+ u32 cfg_enc;
+ u32 cfg_dec;
+
+ int registered;
+};
+
+static const struct ix_hash_algo hash_alg_md5 = {
+ .cfgword = 0xAA010004,
+ .icv = "\x01\x23\x45\x67\x89\xAB\xCD\xEF"
+ "\xFE\xDC\xBA\x98\x76\x54\x32\x10",
+};
+static const struct ix_hash_algo hash_alg_sha1 = {
+ .cfgword = 0x00000005,
+ .icv = "\x67\x45\x23\x01\xEF\xCD\xAB\x89\x98\xBA"
+ "\xDC\xFE\x10\x32\x54\x76\xC3\xD2\xE1\xF0",
+};
+
+static struct npe *npe_c;
+static struct dma_pool *buffer_pool = NULL;
+static struct dma_pool *ctx_pool = NULL;
+
+static struct crypt_ctl *crypt_virt = NULL;
+static dma_addr_t crypt_phys;
+
+static int support_aes = 1;
+
+static void dev_release(struct device *dev)
+{
+ return;
+}
+
+#define DRIVER_NAME "ixp4xx_crypto"
+static struct platform_device pseudo_dev = {
+ .name = DRIVER_NAME,
+ .id = 0,
+ .num_resources = 0,
+ .dev = {
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .release = dev_release,
+ }
+};
+
+static struct device *dev = &pseudo_dev.dev;
+
+static inline dma_addr_t crypt_virt2phys(struct crypt_ctl *virt)
+{
+ return crypt_phys + (virt - crypt_virt) * sizeof(struct crypt_ctl);
+}
+
+static inline struct crypt_ctl *crypt_phys2virt(dma_addr_t phys)
+{
+ return crypt_virt + (phys - crypt_phys) / sizeof(struct crypt_ctl);
+}
+
+static inline u32 cipher_cfg_enc(struct crypto_tfm *tfm)
+{
+ return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_enc;
+}
+
+static inline u32 cipher_cfg_dec(struct crypto_tfm *tfm)
+{
+ return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_dec;
+}
+
+static inline const struct ix_hash_algo *ix_hash(struct crypto_tfm *tfm)
+{
+ return container_of(tfm->__crt_alg, struct ixp_alg, crypto)->hash;
+}
+
+static int setup_crypt_desc(void)
+{
+ BUILD_BUG_ON(sizeof(struct crypt_ctl) != 64);
+ crypt_virt = dma_alloc_coherent(dev,
+ NPE_QLEN * sizeof(struct crypt_ctl),
+ &crypt_phys, GFP_KERNEL);
+ if (!crypt_virt)
+ return -ENOMEM;
+ memset(crypt_virt, 0, NPE_QLEN * sizeof(struct crypt_ctl));
+ return 0;
+}
+
+static spinlock_t desc_lock;
+static struct crypt_ctl *get_crypt_desc(void)
+{
+ int i;
+ static int idx = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&desc_lock, flags);
+
+ if (unlikely(!crypt_virt))
+ setup_crypt_desc();
+ if (unlikely(!crypt_virt)) {
+ spin_unlock_irqrestore(&desc_lock, flags);
+ return NULL;
+ }
+ i = idx;
+ if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) {
+ if (++idx >= NPE_QLEN)
+ idx = 0;
+ crypt_virt[i].ctl_flags = CTL_FLAG_USED;
+ spin_unlock_irqrestore(&desc_lock, flags);
+ return crypt_virt +i;
+ } else {
+ spin_unlock_irqrestore(&desc_lock, flags);
+ return NULL;
+ }
+}
+
+static spinlock_t emerg_lock;
+static struct crypt_ctl *get_crypt_desc_emerg(void)
+{
+ int i;
+ static int idx = NPE_QLEN;
+ struct crypt_ctl *desc;
+ unsigned long flags;
+
+ desc = get_crypt_desc();
+ if (desc)
+ return desc;
+ if (unlikely(!crypt_virt))
+ return NULL;
+
+ spin_lock_irqsave(&emerg_lock, flags);
+ i = idx;
+ if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) {
+ if (++idx >= NPE_QLEN_TOTAL)
+ idx = NPE_QLEN;
+ crypt_virt[i].ctl_flags = CTL_FLAG_USED;
+ spin_unlock_irqrestore(&emerg_lock, flags);
+ return crypt_virt +i;
+ } else {
+ spin_unlock_irqrestore(&emerg_lock, flags);
+ return NULL;
+ }
+}
+
+static void free_buf_chain(struct buffer_desc *buf, u32 phys)
+{
+ while (buf) {
+ struct buffer_desc *buf1;
+ u32 phys1;
+
+ buf1 = buf->next;
+ phys1 = buf->phys_next;
+ dma_pool_free(buffer_pool, buf, phys);
+ buf = buf1;
+ phys = phys1;
+ }
+}
+
+static struct tasklet_struct crypto_done_tasklet;
+
+static void finish_scattered_hmac(struct crypt_ctl *crypt)
+{
+ struct aead_request *req = crypt->data.aead_req;
+ struct aead_ctx *req_ctx = aead_request_ctx(req);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ int authsize = crypto_aead_authsize(tfm);
+ int decryptlen = req->cryptlen - authsize;
+
+ if (req_ctx->encrypt) {
+ scatterwalk_map_and_copy(req_ctx->hmac_virt,
+ req->src, decryptlen, authsize, 1);
+ }
+ dma_pool_free(buffer_pool, req_ctx->hmac_virt, crypt->icv_rev_aes);
+}
+
+static void one_packet(dma_addr_t phys)
+{
+ struct crypt_ctl *crypt;
+ struct ixp_ctx *ctx;
+ int failed;
+ enum dma_data_direction src_direction = DMA_BIDIRECTIONAL;
+
+ failed = phys & 0x1 ? -EBADMSG : 0;
+ phys &= ~0x3;
+ crypt = crypt_phys2virt(phys);
+
+ switch (crypt->ctl_flags & CTL_FLAG_MASK) {
+ case CTL_FLAG_PERFORM_AEAD: {
+ struct aead_request *req = crypt->data.aead_req;
+ struct aead_ctx *req_ctx = aead_request_ctx(req);
+ dma_unmap_sg(dev, req->assoc, req_ctx->assoc_nents,
+ DMA_TO_DEVICE);
+ dma_unmap_sg(dev, &req_ctx->ivlist, 1, DMA_BIDIRECTIONAL);
+ dma_unmap_sg(dev, req->src, req_ctx->src_nents,
+ DMA_BIDIRECTIONAL);
+
+ free_buf_chain(req_ctx->buffer, crypt->src_buf);
+ if (req_ctx->hmac_virt) {
+ finish_scattered_hmac(crypt);
+ }
+ req->base.complete(&req->base, failed);
+ break;
+ }
+ case CTL_FLAG_PERFORM_ABLK: {
+ struct ablkcipher_request *req = crypt->data.ablk_req;
+ struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);
+ int nents;
+ if (req_ctx->dst) {
+ nents = req_ctx->dst_nents;
+ dma_unmap_sg(dev, req->dst, nents, DMA_FROM_DEVICE);
+ free_buf_chain(req_ctx->dst, crypt->dst_buf);
+ src_direction = DMA_TO_DEVICE;
+ }
+ nents = req_ctx->src_nents;
+ dma_unmap_sg(dev, req->src, nents, src_direction);
+ free_buf_chain(req_ctx->src, crypt->src_buf);
+ req->base.complete(&req->base, failed);
+ break;
+ }
+ case CTL_FLAG_GEN_ICV:
+ ctx = crypto_tfm_ctx(crypt->data.tfm);
+ dma_pool_free(ctx_pool, crypt->regist_ptr,
+ crypt->regist_buf->phys_addr);
+ dma_pool_free(buffer_pool, crypt->regist_buf, crypt->src_buf);
+ if (atomic_dec_and_test(&ctx->configuring))
+ complete(&ctx->completion);
+ break;
+ case CTL_FLAG_GEN_REVAES:
+ ctx = crypto_tfm_ctx(crypt->data.tfm);
+ *(u32*)ctx->decrypt.npe_ctx &= cpu_to_be32(~CIPH_ENCR);
+ if (atomic_dec_and_test(&ctx->configuring))
+ complete(&ctx->completion);
+ break;
+ default:
+ BUG();
+ }
+ crypt->ctl_flags = CTL_FLAG_UNUSED;
+}
+
+static void irqhandler(void *_unused)
+{
+ tasklet_schedule(&crypto_done_tasklet);
+}
+
+static void crypto_done_action(unsigned long arg)
+{
+ int i;
+
+ for(i=0; i<4; i++) {
+ dma_addr_t phys = qmgr_get_entry(RECV_QID);
+ if (!phys)
+ return;
+ one_packet(phys);
+ }
+ tasklet_schedule(&crypto_done_tasklet);
+}
+
+static int init_ixp_crypto(void)
+{
+ int ret = -ENODEV;
+
+ if (! ( ~(*IXP4XX_EXP_CFG2) & (IXP4XX_FEATURE_HASH |
+ IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) {
+ printk(KERN_ERR "ixp_crypto: No HW crypto available\n");
+ return ret;
+ }
+ npe_c = npe_request(NPE_ID);
+ if (!npe_c)
+ return ret;
+
+ if (!npe_running(npe_c)) {
+ npe_load_firmware(npe_c, npe_name(npe_c), dev);
+ }
+
+ /* buffer_pool will also be used to sometimes store the hmac,
+ * so assure it is large enough
+ */
+ BUILD_BUG_ON(SHA1_DIGEST_SIZE > sizeof(struct buffer_desc));
+ buffer_pool = dma_pool_create("buffer", dev,
+ sizeof(struct buffer_desc), 32, 0);
+ ret = -ENOMEM;
+ if (!buffer_pool) {
+ goto err;
+ }
+ ctx_pool = dma_pool_create("context", dev,
+ NPE_CTX_LEN, 16, 0);
+ if (!ctx_pool) {
+ goto err;
+ }
+ ret = qmgr_request_queue(SEND_QID, NPE_QLEN_TOTAL, 0, 0);
+ if (ret)
+ goto err;
+ ret = qmgr_request_queue(RECV_QID, NPE_QLEN, 0, 0);
+ if (ret) {
+ qmgr_release_queue(SEND_QID);
+ goto err;
+ }
+ qmgr_set_irq(RECV_QID, QUEUE_IRQ_SRC_NOT_EMPTY, irqhandler, NULL);
+ tasklet_init(&crypto_done_tasklet, crypto_done_action, 0);
+
+ qmgr_enable_irq(RECV_QID);
+ return 0;
+err:
+ if (ctx_pool)
+ dma_pool_destroy(ctx_pool);
+ if (buffer_pool)
+ dma_pool_destroy(buffer_pool);
+ npe_release(npe_c);
+ return ret;
+}
+
+static void release_ixp_crypto(void)
+{
+ qmgr_disable_irq(RECV_QID);
+ tasklet_kill(&crypto_done_tasklet);
+
+ qmgr_release_queue(SEND_QID);
+ qmgr_release_queue(RECV_QID);
+
+ dma_pool_destroy(ctx_pool);
+ dma_pool_destroy(buffer_pool);
+
+ npe_release(npe_c);
+
+ if (crypt_virt) {
+ dma_free_coherent(dev,
+ NPE_QLEN_TOTAL * sizeof( struct crypt_ctl),
+ crypt_virt, crypt_phys);
+ }
+ return;
+}
+
+static void reset_sa_dir(struct ix_sa_dir *dir)
+{
+ memset(dir->npe_ctx, 0, NPE_CTX_LEN);
+ dir->npe_ctx_idx = 0;
+ dir->npe_mode = 0;
+}
+
+static int init_sa_dir(struct ix_sa_dir *dir)
+{
+ dir->npe_ctx = dma_pool_alloc(ctx_pool, GFP_KERNEL, &dir->npe_ctx_phys);
+ if (!dir->npe_ctx) {
+ return -ENOMEM;
+ }
+ reset_sa_dir(dir);
+ return 0;
+}
+
+static void free_sa_dir(struct ix_sa_dir *dir)
+{
+ memset(dir->npe_ctx, 0, NPE_CTX_LEN);
+ dma_pool_free(ctx_pool, dir->npe_ctx, dir->npe_ctx_phys);
+}
+
+static int init_tfm(struct crypto_tfm *tfm)
+{
+ struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
+ int ret;
+
+ atomic_set(&ctx->configuring, 0);
+ ret = init_sa_dir(&ctx->encrypt);
+ if (ret)
+ return ret;
+ ret = init_sa_dir(&ctx->decrypt);
+ if (ret) {
+ free_sa_dir(&ctx->encrypt);
+ }
+ return ret;
+}
+
+static int init_tfm_ablk(struct crypto_tfm *tfm)
+{
+ tfm->crt_ablkcipher.reqsize = sizeof(struct ablk_ctx);
+ return init_tfm(tfm);
+}
+
+static int init_tfm_aead(struct crypto_tfm *tfm)
+{
+ tfm->crt_aead.reqsize = sizeof(struct aead_ctx);
+ return init_tfm(tfm);
+}
+
+static void exit_tfm(struct crypto_tfm *tfm)
+{
+ struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
+ free_sa_dir(&ctx->encrypt);
+ free_sa_dir(&ctx->decrypt);
+}
+
+static int register_chain_var(struct crypto_tfm *tfm, u8 xpad, u32 target,
+ int init_len, u32 ctx_addr, const u8 *key, int key_len)
+{
+ struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct crypt_ctl *crypt;
+ struct buffer_desc *buf;
+ int i;
+ u8 *pad;
+ u32 pad_phys, buf_phys;
+
+ BUILD_BUG_ON(NPE_CTX_LEN < HMAC_PAD_BLOCKLEN);
+ pad = dma_pool_alloc(ctx_pool, GFP_KERNEL, &pad_phys);
+ if (!pad)
+ return -ENOMEM;
+ buf = dma_pool_alloc(buffer_pool, GFP_KERNEL, &buf_phys);
+ if (!buf) {
+ dma_pool_free(ctx_pool, pad, pad_phys);
+ return -ENOMEM;
+ }
+ crypt = get_crypt_desc_emerg();
+ if (!crypt) {
+ dma_pool_free(ctx_pool, pad, pad_phys);
+ dma_pool_free(buffer_pool, buf, buf_phys);
+ return -EAGAIN;
+ }
+
+ memcpy(pad, key, key_len);
+ memset(pad + key_len, 0, HMAC_PAD_BLOCKLEN - key_len);
+ for (i = 0; i < HMAC_PAD_BLOCKLEN; i++) {
+ pad[i] ^= xpad;
+ }
+
+ crypt->data.tfm = tfm;
+ crypt->regist_ptr = pad;
+ crypt->regist_buf = buf;
+
+ crypt->auth_offs = 0;
+ crypt->auth_len = HMAC_PAD_BLOCKLEN;
+ crypt->crypto_ctx = ctx_addr;
+ crypt->src_buf = buf_phys;
+ crypt->icv_rev_aes = target;
+ crypt->mode = NPE_OP_HASH_GEN_ICV;
+ crypt->init_len = init_len;
+ crypt->ctl_flags |= CTL_FLAG_GEN_ICV;
+
+ buf->next = 0;
+ buf->buf_len = HMAC_PAD_BLOCKLEN;
+ buf->pkt_len = 0;
+ buf->phys_addr = pad_phys;
+
+ atomic_inc(&ctx->configuring);
+ qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
+ BUG_ON(qmgr_stat_overflow(SEND_QID));
+ return 0;
+}
+
+static int setup_auth(struct crypto_tfm *tfm, int encrypt, unsigned authsize,
+ const u8 *key, int key_len, unsigned digest_len)
+{
+ u32 itarget, otarget, npe_ctx_addr;
+ unsigned char *cinfo;
+ int init_len, ret = 0;
+ u32 cfgword;
+ struct ix_sa_dir *dir;
+ struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
+ const struct ix_hash_algo *algo;
+
+ dir = encrypt ? &ctx->encrypt : &ctx->decrypt;
+ cinfo = dir->npe_ctx + dir->npe_ctx_idx;
+ algo = ix_hash(tfm);
+
+ /* write cfg word to cryptinfo */
+ cfgword = algo->cfgword | ( authsize << 6); /* (authsize/4) << 8 */
+ *(u32*)cinfo = cpu_to_be32(cfgword);
+ cinfo += sizeof(cfgword);
+
+ /* write ICV to cryptinfo */
+ memcpy(cinfo, algo->icv, digest_len);
+ cinfo += digest_len;
+
+ itarget = dir->npe_ctx_phys + dir->npe_ctx_idx
+ + sizeof(algo->cfgword);
+ otarget = itarget + digest_len;
+ init_len = cinfo - (dir->npe_ctx + dir->npe_ctx_idx);
+ npe_ctx_addr = dir->npe_ctx_phys + dir->npe_ctx_idx;
+
+ dir->npe_ctx_idx += init_len;
+ dir->npe_mode |= NPE_OP_HASH_ENABLE;
+
+ if (!encrypt)
+ dir->npe_mode |= NPE_OP_HASH_VERIFY;
+
+ ret = register_chain_var(tfm, HMAC_OPAD_VALUE, otarget,
+ init_len, npe_ctx_addr, key, key_len);
+ if (ret)
+ return ret;
+ return register_chain_var(tfm, HMAC_IPAD_VALUE, itarget,
+ init_len, npe_ctx_addr, key, key_len);
+}
+
+static int gen_rev_aes_key(struct crypto_tfm *tfm)
+{
+ struct crypt_ctl *crypt;
+ struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct ix_sa_dir *dir = &ctx->decrypt;
+
+ crypt = get_crypt_desc_emerg();
+ if (!crypt) {
+ return -EAGAIN;
+ }
+ *(u32*)dir->npe_ctx |= cpu_to_be32(CIPH_ENCR);
+
+ crypt->data.tfm = tfm;
+ crypt->crypt_offs = 0;
+ crypt->crypt_len = AES_BLOCK128;
+ crypt->src_buf = 0;
+ crypt->crypto_ctx = dir->npe_ctx_phys;
+ crypt->icv_rev_aes = dir->npe_ctx_phys + sizeof(u32);
+ crypt->mode = NPE_OP_ENC_GEN_KEY;
+ crypt->init_len = dir->npe_ctx_idx;
+ crypt->ctl_flags |= CTL_FLAG_GEN_REVAES;
+
+ atomic_inc(&ctx->configuring);
+ qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
+ BUG_ON(qmgr_stat_overflow(SEND_QID));
+ return 0;
+}
+
+static int setup_cipher(struct crypto_tfm *tfm, int encrypt,
+ const u8 *key, int key_len)
+{
+ u8 *cinfo;
+ u32 cipher_cfg;
+ u32 keylen_cfg = 0;
+ struct ix_sa_dir *dir;
+ struct ixp_ctx *ctx = crypto_tfm_ctx(tfm);
+ u32 *flags = &tfm->crt_flags;
+
+ dir = encrypt ? &ctx->encrypt : &ctx->decrypt;
+ cinfo = dir->npe_ctx;
+
+ if (encrypt) {
+ cipher_cfg = cipher_cfg_enc(tfm);
+ dir->npe_mode |= NPE_OP_CRYPT_ENCRYPT;
+ } else {
+ cipher_cfg = cipher_cfg_dec(tfm);
+ }
+ if (cipher_cfg & MOD_AES) {
+ switch (key_len) {
+ case 16: keylen_cfg = MOD_AES128 | KEYLEN_128; break;
+ case 24: keylen_cfg = MOD_AES192 | KEYLEN_192; break;
+ case 32: keylen_cfg = MOD_AES256 | KEYLEN_256; break;
+ default:
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
+ return -EINVAL;
+ }
+ cipher_cfg |= keylen_cfg;
+ } else if (cipher_cfg & MOD_3DES) {
+ const u32 *K = (const u32 *)key;
+ if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
+ !((K[2] ^ K[4]) | (K[3] ^ K[5]))))
+ {
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED;
+ return -EINVAL;
+ }
+ } else {
+ u32 tmp[DES_EXPKEY_WORDS];
+ if (des_ekey(tmp, key) == 0) {
+ *flags |= CRYPTO_TFM_RES_WEAK_KEY;
+ }
+ }
+ /* write cfg word to cryptinfo */
+ *(u32*)cinfo = cpu_to_be32(cipher_cfg);
+ cinfo += sizeof(cipher_cfg);
+
+ /* write cipher key to cryptinfo */
+ memcpy(cinfo, key, key_len);
+ /* NPE wants keylen set to DES3_EDE_KEY_SIZE even for single DES */
+ if (key_len < DES3_EDE_KEY_SIZE && !(cipher_cfg & MOD_AES)) {
+ memset(cinfo + key_len, 0, DES3_EDE_KEY_SIZE -key_len);
+ key_len = DES3_EDE_KEY_SIZE;
+ }
+ dir->npe_ctx_idx = sizeof(cipher_cfg) + key_len;
+ dir->npe_mode |= NPE_OP_CRYPT_ENABLE;
+ if ((cipher_cfg & MOD_AES) && !encrypt) {
+ return gen_rev_aes_key(tfm);
+ }
+ return 0;
+}
+
+static int count_sg(struct scatterlist *sg, int nbytes)
+{
+ int i;
+ for (i = 0; nbytes > 0; i++, sg = sg_next(sg))
+ nbytes -= sg->length;
+ return i;
+}
+
+static struct buffer_desc *chainup_buffers(struct scatterlist *sg,
+ unsigned nbytes, struct buffer_desc *buf, gfp_t flags)
+{
+ int nents = 0;
+
+ while (nbytes > 0) {
+ struct buffer_desc *next_buf;
+ u32 next_buf_phys;
+ unsigned len = min(nbytes, sg_dma_len(sg));
+
+ nents++;
+ nbytes -= len;
+ if (!buf->phys_addr) {
+ buf->phys_addr = sg_dma_address(sg);
+ buf->buf_len = len;
+ buf->next = NULL;
+ buf->phys_next = 0;
+ goto next;
+ }
+ /* Two consecutive chunks on one page may be handled by the old
+ * buffer descriptor, increased by the length of the new one
+ */
+ if (sg_dma_address(sg) == buf->phys_addr + buf->buf_len) {
+ buf->buf_len += len;
+ goto next;
+ }
+ next_buf = dma_pool_alloc(buffer_pool, flags, &next_buf_phys);
+ if (!next_buf)
+ return NULL;
+ buf->next = next_buf;
+ buf->phys_next = next_buf_phys;
+
+ buf = next_buf;
+ buf->next = NULL;
+ buf->phys_next = 0;
+ buf->phys_addr = sg_dma_address(sg);
+ buf->buf_len = len;
+next:
+ if (nbytes > 0) {
+ sg = sg_next(sg);
+ }
+ }
+ return buf;
+}
+
+static int ablk_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
+ unsigned int key_len)
+{
+ struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+ u32 *flags = &tfm->base.crt_flags;
+ int ret;
+
+ init_completion(&ctx->completion);
+ atomic_inc(&ctx->configuring);
+
+ reset_sa_dir(&ctx->encrypt);
+ reset_sa_dir(&ctx->decrypt);
+
+ ctx->encrypt.npe_mode = NPE_OP_HMAC_DISABLE;
+ ctx->decrypt.npe_mode = NPE_OP_HMAC_DISABLE;
+
+ ret = setup_cipher(&tfm->base, 0, key, key_len);
+ if (ret)
+ goto out;
+ ret = setup_cipher(&tfm->base, 1, key, key_len);
+ if (ret)
+ goto out;
+
+ if (*flags & CRYPTO_TFM_RES_WEAK_KEY) {
+ if (*flags & CRYPTO_TFM_REQ_WEAK_KEY) {
+ ret = -EINVAL;
+ } else {
+ *flags &= ~CRYPTO_TFM_RES_WEAK_KEY;
+ }
+ }
+out:
+ if (!atomic_dec_and_test(&ctx->configuring))
+ wait_for_completion(&ctx->completion);
+ return ret;
+}
+
+static int ablk_rfc3686_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
+ unsigned int key_len)
+{
+ struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+
+ /* the nonce is stored in bytes at end of key */
+ if (key_len < CTR_RFC3686_NONCE_SIZE)
+ return -EINVAL;
+
+ memcpy(ctx->nonce, key + (key_len - CTR_RFC3686_NONCE_SIZE),
+ CTR_RFC3686_NONCE_SIZE);
+
+ key_len -= CTR_RFC3686_NONCE_SIZE;
+ return ablk_setkey(tfm, key, key_len);
+}
+
+static int ablk_perform(struct ablkcipher_request *req, int encrypt)
+{
+ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
+ struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+ unsigned ivsize = crypto_ablkcipher_ivsize(tfm);
+ int ret = -ENOMEM;
+ struct ix_sa_dir *dir;
+ struct crypt_ctl *crypt;
+ unsigned int nbytes = req->nbytes, nents;
+ enum dma_data_direction src_direction = DMA_BIDIRECTIONAL;
+ struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);
+ gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
+ GFP_KERNEL : GFP_ATOMIC;
+
+ if (qmgr_stat_full(SEND_QID))
+ return -EAGAIN;
+ if (atomic_read(&ctx->configuring))
+ return -EAGAIN;
+
+ dir = encrypt ? &ctx->encrypt : &ctx->decrypt;
+
+ crypt = get_crypt_desc();
+ if (!crypt)
+ return ret;
+
+ crypt->data.ablk_req = req;
+ crypt->crypto_ctx = dir->npe_ctx_phys;
+ crypt->mode = dir->npe_mode;
+ crypt->init_len = dir->npe_ctx_idx;
+
+ crypt->crypt_offs = 0;
+ crypt->crypt_len = nbytes;
+
+ BUG_ON(ivsize && !req->info);
+ memcpy(crypt->iv, req->info, ivsize);
+ if (req->src != req->dst) {
+ crypt->mode |= NPE_OP_NOT_IN_PLACE;
+ nents = count_sg(req->dst, nbytes);
+ /* This was never tested by Intel
+ * for more than one dst buffer, I think. */
+ BUG_ON(nents != 1);
+ req_ctx->dst_nents = nents;
+ dma_map_sg(dev, req->dst, nents, DMA_FROM_DEVICE);
+ req_ctx->dst = dma_pool_alloc(buffer_pool, flags,&crypt->dst_buf);
+ if (!req_ctx->dst)
+ goto unmap_sg_dest;
+ req_ctx->dst->phys_addr = 0;
+ if (!chainup_buffers(req->dst, nbytes, req_ctx->dst, flags))
+ goto free_buf_dest;
+ src_direction = DMA_TO_DEVICE;
+ } else {
+ req_ctx->dst = NULL;
+ req_ctx->dst_nents = 0;
+ }
+ nents = count_sg(req->src, nbytes);
+ req_ctx->src_nents = nents;
+ dma_map_sg(dev, req->src, nents, src_direction);
+
+ req_ctx->src = dma_pool_alloc(buffer_pool, flags, &crypt->src_buf);
+ if (!req_ctx->src)
+ goto unmap_sg_src;
+ req_ctx->src->phys_addr = 0;
+ if (!chainup_buffers(req->src, nbytes, req_ctx->src, flags))
+ goto free_buf_src;
+
+ crypt->ctl_flags |= CTL_FLAG_PERFORM_ABLK;
+ qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
+ BUG_ON(qmgr_stat_overflow(SEND_QID));
+ return -EINPROGRESS;
+
+free_buf_src:
+ free_buf_chain(req_ctx->src, crypt->src_buf);
+unmap_sg_src:
+ dma_unmap_sg(dev, req->src, req_ctx->src_nents, src_direction);
+free_buf_dest:
+ if (req->src != req->dst) {
+ free_buf_chain(req_ctx->dst, crypt->dst_buf);
+unmap_sg_dest:
+ dma_unmap_sg(dev, req->src, req_ctx->dst_nents,
+ DMA_FROM_DEVICE);
+ }
+ crypt->ctl_flags = CTL_FLAG_UNUSED;
+ return ret;
+}
+
+static int ablk_encrypt(struct ablkcipher_request *req)
+{
+ return ablk_perform(req, 1);
+}
+
+static int ablk_decrypt(struct ablkcipher_request *req)
+{
+ return ablk_perform(req, 0);
+}
+
+static int ablk_rfc3686_crypt(struct ablkcipher_request *req)
+{
+ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
+ struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+ u8 iv[CTR_RFC3686_BLOCK_SIZE];
+ u8 *info = req->info;
+ int ret;
+
+ /* set up counter block */
+ memcpy(iv, ctx->nonce, CTR_RFC3686_NONCE_SIZE);
+ memcpy(iv + CTR_RFC3686_NONCE_SIZE, info, CTR_RFC3686_IV_SIZE);
+
+ /* initialize counter portion of counter block */
+ *(__be32 *)(iv + CTR_RFC3686_NONCE_SIZE + CTR_RFC3686_IV_SIZE) =
+ cpu_to_be32(1);
+
+ req->info = iv;
+ ret = ablk_perform(req, 1);
+ req->info = info;
+ return ret;
+}
+
+static int hmac_inconsistent(struct scatterlist *sg, unsigned start,
+ unsigned int nbytes)
+{
+ int offset = 0;
+
+ if (!nbytes)
+ return 0;
+
+ for (;;) {
+ if (start < offset + sg->length)
+ break;
+
+ offset += sg->length;
+ sg = sg_next(sg);
+ }
+ return (start + nbytes > offset + sg->length);
+}
+
+static int aead_perform(struct aead_request *req, int encrypt,
+ int cryptoffset, int eff_cryptlen, u8 *iv)
+{
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
+ unsigned ivsize = crypto_aead_ivsize(tfm);
+ unsigned authsize = crypto_aead_authsize(tfm);
+ int ret = -ENOMEM;
+ struct ix_sa_dir *dir;
+ struct crypt_ctl *crypt;
+ unsigned int cryptlen, nents;
+ struct buffer_desc *buf;
+ struct aead_ctx *req_ctx = aead_request_ctx(req);
+ gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
+ GFP_KERNEL : GFP_ATOMIC;
+
+ if (qmgr_stat_full(SEND_QID))
+ return -EAGAIN;
+ if (atomic_read(&ctx->configuring))
+ return -EAGAIN;
+
+ if (encrypt) {
+ dir = &ctx->encrypt;
+ cryptlen = req->cryptlen;
+ } else {
+ dir = &ctx->decrypt;
+ /* req->cryptlen includes the authsize when decrypting */
+ cryptlen = req->cryptlen -authsize;
+ eff_cryptlen -= authsize;
+ }
+ crypt = get_crypt_desc();
+ if (!crypt)
+ return ret;
+
+ crypt->data.aead_req = req;
+ crypt->crypto_ctx = dir->npe_ctx_phys;
+ crypt->mode = dir->npe_mode;
+ crypt->init_len = dir->npe_ctx_idx;
+
+ crypt->crypt_offs = cryptoffset;
+ crypt->crypt_len = eff_cryptlen;
+
+ crypt->auth_offs = 0;
+ crypt->auth_len = req->assoclen + ivsize + cryptlen;
+ BUG_ON(ivsize && !req->iv);
+ memcpy(crypt->iv, req->iv, ivsize);
+
+ if (req->src != req->dst) {
+ BUG(); /* -ENOTSUP because of my lazyness */
+ }
+
+ req_ctx->buffer = dma_pool_alloc(buffer_pool, flags, &crypt->src_buf);
+ if (!req_ctx->buffer)
+ goto out;
+ req_ctx->buffer->phys_addr = 0;
+ /* ASSOC data */
+ nents = count_sg(req->assoc, req->assoclen);
+ req_ctx->assoc_nents = nents;
+ dma_map_sg(dev, req->assoc, nents, DMA_TO_DEVICE);
+ buf = chainup_buffers(req->assoc, req->assoclen, req_ctx->buffer,flags);
+ if (!buf)
+ goto unmap_sg_assoc;
+ /* IV */
+ sg_init_table(&req_ctx->ivlist, 1);
+ sg_set_buf(&req_ctx->ivlist, iv, ivsize);
+ dma_map_sg(dev, &req_ctx->ivlist, 1, DMA_BIDIRECTIONAL);
+ buf = chainup_buffers(&req_ctx->ivlist, ivsize, buf, flags);
+ if (!buf)
+ goto unmap_sg_iv;
+ if (unlikely(hmac_inconsistent(req->src, cryptlen, authsize))) {
+ /* The 12 hmac bytes are scattered,
+ * we need to copy them into a safe buffer */
+ req_ctx->hmac_virt = dma_pool_alloc(buffer_pool, flags,
+ &crypt->icv_rev_aes);
+ if (unlikely(!req_ctx->hmac_virt))
+ goto unmap_sg_iv;
+ if (!encrypt) {
+ scatterwalk_map_and_copy(req_ctx->hmac_virt,
+ req->src, cryptlen, authsize, 0);
+ }
+ req_ctx->encrypt = encrypt;
+ } else {
+ req_ctx->hmac_virt = NULL;
+ }
+ /* Crypt */
+ nents = count_sg(req->src, cryptlen + authsize);
+ req_ctx->src_nents = nents;
+ dma_map_sg(dev, req->src, nents, DMA_BIDIRECTIONAL);
+ buf = chainup_buffers(req->src, cryptlen + authsize, buf, flags);
+ if (!buf)
+ goto unmap_sg_src;
+ if (!req_ctx->hmac_virt) {
+ crypt->icv_rev_aes = buf->phys_addr + buf->buf_len - authsize;
+ }
+ crypt->ctl_flags |= CTL_FLAG_PERFORM_AEAD;
+ qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
+ BUG_ON(qmgr_stat_overflow(SEND_QID));
+ return -EINPROGRESS;
+unmap_sg_src:
+ dma_unmap_sg(dev, req->src, req_ctx->src_nents, DMA_BIDIRECTIONAL);
+ if (req_ctx->hmac_virt) {
+ dma_pool_free(buffer_pool, req_ctx->hmac_virt,
+ crypt->icv_rev_aes);
+ }
+unmap_sg_iv:
+ dma_unmap_sg(dev, &req_ctx->ivlist, 1, DMA_BIDIRECTIONAL);
+unmap_sg_assoc:
+ dma_unmap_sg(dev, req->assoc, req_ctx->assoc_nents, DMA_TO_DEVICE);
+ free_buf_chain(req_ctx->buffer, crypt->src_buf);
+out:
+ crypt->ctl_flags = CTL_FLAG_UNUSED;
+ return ret;
+}
+
+static int aead_setup(struct crypto_aead *tfm, unsigned int authsize)
+{
+ struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
+ u32 *flags = &tfm->base.crt_flags;
+ unsigned digest_len = crypto_aead_alg(tfm)->maxauthsize;
+ int ret;
+
+ if (!ctx->enckey_len && !ctx->authkey_len)
+ return 0;
+ init_completion(&ctx->completion);
+ atomic_inc(&ctx->configuring);
+
+ reset_sa_dir(&ctx->encrypt);
+ reset_sa_dir(&ctx->decrypt);
+
+ ret = setup_cipher(&tfm->base, 0, ctx->enckey, ctx->enckey_len);
+ if (ret)
+ goto out;
+ ret = setup_cipher(&tfm->base, 1, ctx->enckey, ctx->enckey_len);
+ if (ret)
+ goto out;
+ ret = setup_auth(&tfm->base, 0, authsize, ctx->authkey,
+ ctx->authkey_len, digest_len);
+ if (ret)
+ goto out;
+ ret = setup_auth(&tfm->base, 1, authsize, ctx->authkey,
+ ctx->authkey_len, digest_len);
+ if (ret)
+ goto out;
+
+ if (*flags & CRYPTO_TFM_RES_WEAK_KEY) {
+ if (*flags & CRYPTO_TFM_REQ_WEAK_KEY) {
+ ret = -EINVAL;
+ goto out;
+ } else {
+ *flags &= ~CRYPTO_TFM_RES_WEAK_KEY;
+ }
+ }
+out:
+ if (!atomic_dec_and_test(&ctx->configuring))
+ wait_for_completion(&ctx->completion);
+ return ret;
+}
+
+static int aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
+{
+ int max = crypto_aead_alg(tfm)->maxauthsize >> 2;
+
+ if ((authsize>>2) < 1 || (authsize>>2) > max || (authsize & 3))
+ return -EINVAL;
+ return aead_setup(tfm, authsize);
+}
+
+static int aead_setkey(struct crypto_aead *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
+ struct rtattr *rta = (struct rtattr *)key;
+ struct crypto_authenc_key_param *param;
+
+ if (!RTA_OK(rta, keylen))
+ goto badkey;
+ if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
+ goto badkey;
+ if (RTA_PAYLOAD(rta) < sizeof(*param))
+ goto badkey;
+
+ param = RTA_DATA(rta);
+ ctx->enckey_len = be32_to_cpu(param->enckeylen);
+
+ key += RTA_ALIGN(rta->rta_len);
+ keylen -= RTA_ALIGN(rta->rta_len);
+
+ if (keylen < ctx->enckey_len)
+ goto badkey;
+
+ ctx->authkey_len = keylen - ctx->enckey_len;
+ memcpy(ctx->enckey, key + ctx->authkey_len, ctx->enckey_len);
+ memcpy(ctx->authkey, key, ctx->authkey_len);
+
+ return aead_setup(tfm, crypto_aead_authsize(tfm));
+badkey:
+ ctx->enckey_len = 0;
+ crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+ return -EINVAL;
+}
+
+static int aead_encrypt(struct aead_request *req)
+{
+ unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(req));
+ return aead_perform(req, 1, req->assoclen + ivsize,
+ req->cryptlen, req->iv);
+}
+
+static int aead_decrypt(struct aead_request *req)
+{
+ unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(req));
+ return aead_perform(req, 0, req->assoclen + ivsize,
+ req->cryptlen, req->iv);
+}
+
+static int aead_givencrypt(struct aead_givcrypt_request *req)
+{
+ struct crypto_aead *tfm = aead_givcrypt_reqtfm(req);
+ struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
+ unsigned len, ivsize = crypto_aead_ivsize(tfm);
+ __be64 seq;
+
+ /* copied from eseqiv.c */
+ if (!ctx->salted) {
+ get_random_bytes(ctx->salt, ivsize);
+ ctx->salted = 1;
+ }
+ memcpy(req->areq.iv, ctx->salt, ivsize);
+ len = ivsize;
+ if (ivsize > sizeof(u64)) {
+ memset(req->giv, 0, ivsize - sizeof(u64));
+ len = sizeof(u64);
+ }
+ seq = cpu_to_be64(req->seq);
+ memcpy(req->giv + ivsize - len, &seq, len);
+ return aead_perform(&req->areq, 1, req->areq.assoclen,
+ req->areq.cryptlen +ivsize, req->giv);
+}
+
+static struct ixp_alg ixp4xx_algos[] = {
+{
+ .crypto = {
+ .cra_name = "cbc(des)",
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
+ .geniv = "eseqiv",
+ }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192,
+
+}, {
+ .crypto = {
+ .cra_name = "ecb(des)",
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_DES | MOD_ECB | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_DES | MOD_ECB | KEYLEN_192,
+}, {
+ .crypto = {
+ .cra_name = "cbc(des3_ede)",
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .geniv = "eseqiv",
+ }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192,
+}, {
+ .crypto = {
+ .cra_name = "ecb(des3_ede)",
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_ECB | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_3DES | MOD_ECB | KEYLEN_192,
+}, {
+ .crypto = {
+ .cra_name = "cbc(aes)",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .geniv = "eseqiv",
+ }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC,
+ .cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC,
+}, {
+ .crypto = {
+ .cra_name = "ecb(aes)",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_AES | MOD_ECB,
+ .cfg_dec = CIPH_DECR | MOD_AES | MOD_ECB,
+}, {
+ .crypto = {
+ .cra_name = "ctr(aes)",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .geniv = "eseqiv",
+ }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CTR,
+ .cfg_dec = CIPH_ENCR | MOD_AES | MOD_CTR,
+}, {
+ .crypto = {
+ .cra_name = "rfc3686(ctr(aes))",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_u = { .ablkcipher = {
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .geniv = "eseqiv",
+ .setkey = ablk_rfc3686_setkey,
+ .encrypt = ablk_rfc3686_crypt,
+ .decrypt = ablk_rfc3686_crypt }
+ }
+ },
+ .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CTR,
+ .cfg_dec = CIPH_ENCR | MOD_AES | MOD_CTR,
+}, {
+ .crypto = {
+ .cra_name = "authenc(hmac(md5),cbc(des))",
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_u = { .aead = {
+ .ivsize = DES_BLOCK_SIZE,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ }
+ }
+ },
+ .hash = &hash_alg_md5,
+ .cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192,
+}, {
+ .crypto = {
+ .cra_name = "authenc(hmac(md5),cbc(des3_ede))",
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_u = { .aead = {
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ }
+ }
+ },
+ .hash = &hash_alg_md5,
+ .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192,
+}, {
+ .crypto = {
+ .cra_name = "authenc(hmac(sha1),cbc(des))",
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_u = { .aead = {
+ .ivsize = DES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ }
+ }
+ },
+ .hash = &hash_alg_sha1,
+ .cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192,
+}, {
+ .crypto = {
+ .cra_name = "authenc(hmac(sha1),cbc(des3_ede))",
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_u = { .aead = {
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ }
+ }
+ },
+ .hash = &hash_alg_sha1,
+ .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192,
+ .cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192,
+}, {
+ .crypto = {
+ .cra_name = "authenc(hmac(md5),cbc(aes))",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_u = { .aead = {
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ }
+ }
+ },
+ .hash = &hash_alg_md5,
+ .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC,
+ .cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC,
+}, {
+ .crypto = {
+ .cra_name = "authenc(hmac(sha1),cbc(aes))",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_u = { .aead = {
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ }
+ }
+ },
+ .hash = &hash_alg_sha1,
+ .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC,
+ .cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC,
+} };
+
+#define IXP_POSTFIX "-ixp4xx"
+static int __init ixp_module_init(void)
+{
+ int num = ARRAY_SIZE(ixp4xx_algos);
+ int i,err ;
+
+ if (platform_device_register(&pseudo_dev))
+ return -ENODEV;
+
+ spin_lock_init(&desc_lock);
+ spin_lock_init(&emerg_lock);
+
+ err = init_ixp_crypto();
+ if (err) {
+ platform_device_unregister(&pseudo_dev);
+ return err;
+ }
+ for (i=0; i< num; i++) {
+ struct crypto_alg *cra = &ixp4xx_algos[i].crypto;
+
+ if (snprintf(cra->cra_driver_name, CRYPTO_MAX_ALG_NAME,
+ "%s"IXP_POSTFIX, cra->cra_name) >=
+ CRYPTO_MAX_ALG_NAME)
+ {
+ continue;
+ }
+ if (!support_aes && (ixp4xx_algos[i].cfg_enc & MOD_AES)) {
+ continue;
+ }
+ if (!ixp4xx_algos[i].hash) {
+ /* block ciphers */
+ cra->cra_type = &crypto_ablkcipher_type;
+ cra->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
+ CRYPTO_ALG_ASYNC;
+ if (!cra->cra_ablkcipher.setkey)
+ cra->cra_ablkcipher.setkey = ablk_setkey;
+ if (!cra->cra_ablkcipher.encrypt)
+ cra->cra_ablkcipher.encrypt = ablk_encrypt;
+ if (!cra->cra_ablkcipher.decrypt)
+ cra->cra_ablkcipher.decrypt = ablk_decrypt;
+ cra->cra_init = init_tfm_ablk;
+ } else {
+ /* authenc */
+ cra->cra_type = &crypto_aead_type;
+ cra->cra_flags = CRYPTO_ALG_TYPE_AEAD |
+ CRYPTO_ALG_ASYNC;
+ cra->cra_aead.setkey = aead_setkey;
+ cra->cra_aead.setauthsize = aead_setauthsize;
+ cra->cra_aead.encrypt = aead_encrypt;
+ cra->cra_aead.decrypt = aead_decrypt;
+ cra->cra_aead.givencrypt = aead_givencrypt;
+ cra->cra_init = init_tfm_aead;
+ }
+ cra->cra_ctxsize = sizeof(struct ixp_ctx);
+ cra->cra_module = THIS_MODULE;
+ cra->cra_alignmask = 3;
+ cra->cra_priority = 300;
+ cra->cra_exit = exit_tfm;
+ if (crypto_register_alg(cra))
+ printk(KERN_ERR "Failed to register '%s'\n",
+ cra->cra_name);
+ else
+ ixp4xx_algos[i].registered = 1;
+ }
+ return 0;
+}
+
+static void __exit ixp_module_exit(void)
+{
+ int num = ARRAY_SIZE(ixp4xx_algos);
+ int i;
+
+ for (i=0; i< num; i++) {
+ if (ixp4xx_algos[i].registered)
+ crypto_unregister_alg(&ixp4xx_algos[i].crypto);
+ }
+ release_ixp_crypto();
+ platform_device_unregister(&pseudo_dev);
+}
+
+module_init(ixp_module_init);
+module_exit(ixp_module_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Hohnstaedt <chohnstaedt@innominate.com>");
+MODULE_DESCRIPTION("IXP4xx hardware crypto");
+
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index bb30eb9b93ef..54a2a166e566 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -385,12 +385,12 @@ static int __init padlock_init(void)
int ret;
if (!cpu_has_xcrypt) {
- printk(KERN_ERR PFX "VIA PadLock not detected.\n");
+ printk(KERN_NOTICE PFX "VIA PadLock not detected.\n");
return -ENODEV;
}
if (!cpu_has_xcrypt_enabled) {
- printk(KERN_ERR PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
+ printk(KERN_NOTICE PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
return -ENODEV;
}
diff --git a/drivers/crypto/padlock-sha.c b/drivers/crypto/padlock-sha.c
index c666b4e0933e..40d5680fa013 100644
--- a/drivers/crypto/padlock-sha.c
+++ b/drivers/crypto/padlock-sha.c
@@ -254,12 +254,12 @@ static int __init padlock_init(void)
int rc = -ENODEV;
if (!cpu_has_phe) {
- printk(KERN_ERR PFX "VIA PadLock Hash Engine not detected.\n");
+ printk(KERN_NOTICE PFX "VIA PadLock Hash Engine not detected.\n");
return -ENODEV;
}
if (!cpu_has_phe_enabled) {
- printk(KERN_ERR PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
+ printk(KERN_NOTICE PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
return -ENODEV;
}
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
new file mode 100644
index 000000000000..b11943dadefd
--- /dev/null
+++ b/drivers/crypto/talitos.c
@@ -0,0 +1,1597 @@
+/*
+ * talitos - Freescale Integrated Security Engine (SEC) device driver
+ *
+ * Copyright (c) 2008 Freescale Semiconductor, Inc.
+ *
+ * Scatterlist Crypto API glue code copied from files with the following:
+ * Copyright (c) 2006-2007 Herbert Xu <herbert@gondor.apana.org.au>
+ *
+ * Crypto algorithm registration code copied from hifn driver:
+ * 2007+ Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/crypto.h>
+#include <linux/hw_random.h>
+#include <linux/of_platform.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+#include <linux/rtnetlink.h>
+
+#include <crypto/algapi.h>
+#include <crypto/aes.h>
+#include <crypto/des.h>
+#include <crypto/sha.h>
+#include <crypto/aead.h>
+#include <crypto/authenc.h>
+
+#include "talitos.h"
+
+#define TALITOS_TIMEOUT 100000
+#define TALITOS_MAX_DATA_LEN 65535
+
+#define DESC_TYPE(desc_hdr) ((be32_to_cpu(desc_hdr) >> 3) & 0x1f)
+#define PRIMARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 28) & 0xf)
+#define SECONDARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 16) & 0xf)
+
+/* descriptor pointer entry */
+struct talitos_ptr {
+ __be16 len; /* length */
+ u8 j_extent; /* jump to sg link table and/or extent */
+ u8 eptr; /* extended address */
+ __be32 ptr; /* address */
+};
+
+/* descriptor */
+struct talitos_desc {
+ __be32 hdr; /* header high bits */
+ __be32 hdr_lo; /* header low bits */
+ struct talitos_ptr ptr[7]; /* ptr/len pair array */
+};
+
+/**
+ * talitos_request - descriptor submission request
+ * @desc: descriptor pointer (kernel virtual)
+ * @dma_desc: descriptor's physical bus address
+ * @callback: whom to call when descriptor processing is done
+ * @context: caller context (optional)
+ */
+struct talitos_request {
+ struct talitos_desc *desc;
+ dma_addr_t dma_desc;
+ void (*callback) (struct device *dev, struct talitos_desc *desc,
+ void *context, int error);
+ void *context;
+};
+
+struct talitos_private {
+ struct device *dev;
+ struct of_device *ofdev;
+ void __iomem *reg;
+ int irq;
+
+ /* SEC version geometry (from device tree node) */
+ unsigned int num_channels;
+ unsigned int chfifo_len;
+ unsigned int exec_units;
+ unsigned int desc_types;
+
+ /* next channel to be assigned next incoming descriptor */
+ atomic_t last_chan;
+
+ /* per-channel request fifo */
+ struct talitos_request **fifo;
+
+ /*
+ * length of the request fifo
+ * fifo_len is chfifo_len rounded up to next power of 2
+ * so we can use bitwise ops to wrap
+ */
+ unsigned int fifo_len;
+
+ /* per-channel index to next free descriptor request */
+ int *head;
+
+ /* per-channel index to next in-progress/done descriptor request */
+ int *tail;
+
+ /* per-channel request submission (head) and release (tail) locks */
+ spinlock_t *head_lock;
+ spinlock_t *tail_lock;
+
+ /* request callback tasklet */
+ struct tasklet_struct done_task;
+ struct tasklet_struct error_task;
+
+ /* list of registered algorithms */
+ struct list_head alg_list;
+
+ /* hwrng device */
+ struct hwrng rng;
+};
+
+/*
+ * map virtual single (contiguous) pointer to h/w descriptor pointer
+ */
+static void map_single_talitos_ptr(struct device *dev,
+ struct talitos_ptr *talitos_ptr,
+ unsigned short len, void *data,
+ unsigned char extent,
+ enum dma_data_direction dir)
+{
+ talitos_ptr->len = cpu_to_be16(len);
+ talitos_ptr->ptr = cpu_to_be32(dma_map_single(dev, data, len, dir));
+ talitos_ptr->j_extent = extent;
+}
+
+/*
+ * unmap bus single (contiguous) h/w descriptor pointer
+ */
+static void unmap_single_talitos_ptr(struct device *dev,
+ struct talitos_ptr *talitos_ptr,
+ enum dma_data_direction dir)
+{
+ dma_unmap_single(dev, be32_to_cpu(talitos_ptr->ptr),
+ be16_to_cpu(talitos_ptr->len), dir);
+}
+
+static int reset_channel(struct device *dev, int ch)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ unsigned int timeout = TALITOS_TIMEOUT;
+
+ setbits32(priv->reg + TALITOS_CCCR(ch), TALITOS_CCCR_RESET);
+
+ while ((in_be32(priv->reg + TALITOS_CCCR(ch)) & TALITOS_CCCR_RESET)
+ && --timeout)
+ cpu_relax();
+
+ if (timeout == 0) {
+ dev_err(dev, "failed to reset channel %d\n", ch);
+ return -EIO;
+ }
+
+ /* set done writeback and IRQ */
+ setbits32(priv->reg + TALITOS_CCCR_LO(ch), TALITOS_CCCR_LO_CDWE |
+ TALITOS_CCCR_LO_CDIE);
+
+ return 0;
+}
+
+static int reset_device(struct device *dev)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ unsigned int timeout = TALITOS_TIMEOUT;
+
+ setbits32(priv->reg + TALITOS_MCR, TALITOS_MCR_SWR);
+
+ while ((in_be32(priv->reg + TALITOS_MCR) & TALITOS_MCR_SWR)
+ && --timeout)
+ cpu_relax();
+
+ if (timeout == 0) {
+ dev_err(dev, "failed to reset device\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/*
+ * Reset and initialize the device
+ */
+static int init_device(struct device *dev)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ int ch, err;
+
+ /*
+ * Master reset
+ * errata documentation: warning: certain SEC interrupts
+ * are not fully cleared by writing the MCR:SWR bit,
+ * set bit twice to completely reset
+ */
+ err = reset_device(dev);
+ if (err)
+ return err;
+
+ err = reset_device(dev);
+ if (err)
+ return err;
+
+ /* reset channels */
+ for (ch = 0; ch < priv->num_channels; ch++) {
+ err = reset_channel(dev, ch);
+ if (err)
+ return err;
+ }
+
+ /* enable channel done and error interrupts */
+ setbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_INIT);
+ setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT);
+
+ return 0;
+}
+
+/**
+ * talitos_submit - submits a descriptor to the device for processing
+ * @dev: the SEC device to be used
+ * @desc: the descriptor to be processed by the device
+ * @callback: whom to call when processing is complete
+ * @context: a handle for use by caller (optional)
+ *
+ * desc must contain valid dma-mapped (bus physical) address pointers.
+ * callback must check err and feedback in descriptor header
+ * for device processing status.
+ */
+static int talitos_submit(struct device *dev, struct talitos_desc *desc,
+ void (*callback)(struct device *dev,
+ struct talitos_desc *desc,
+ void *context, int error),
+ void *context)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ struct talitos_request *request;
+ unsigned long flags, ch;
+ int head;
+
+ /* select done notification */
+ desc->hdr |= DESC_HDR_DONE_NOTIFY;
+
+ /* emulate SEC's round-robin channel fifo polling scheme */
+ ch = atomic_inc_return(&priv->last_chan) & (priv->num_channels - 1);
+
+ spin_lock_irqsave(&priv->head_lock[ch], flags);
+
+ head = priv->head[ch];
+ request = &priv->fifo[ch][head];
+
+ if (request->desc) {
+ /* request queue is full */
+ spin_unlock_irqrestore(&priv->head_lock[ch], flags);
+ return -EAGAIN;
+ }
+
+ /* map descriptor and save caller data */
+ request->dma_desc = dma_map_single(dev, desc, sizeof(*desc),
+ DMA_BIDIRECTIONAL);
+ request->callback = callback;
+ request->context = context;
+
+ /* increment fifo head */
+ priv->head[ch] = (priv->head[ch] + 1) & (priv->fifo_len - 1);
+
+ smp_wmb();
+ request->desc = desc;
+
+ /* GO! */
+ wmb();
+ out_be32(priv->reg + TALITOS_FF_LO(ch), request->dma_desc);
+
+ spin_unlock_irqrestore(&priv->head_lock[ch], flags);
+
+ return -EINPROGRESS;
+}
+
+/*
+ * process what was done, notify callback of error if not
+ */
+static void flush_channel(struct device *dev, int ch, int error, int reset_ch)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ struct talitos_request *request, saved_req;
+ unsigned long flags;
+ int tail, status;
+
+ spin_lock_irqsave(&priv->tail_lock[ch], flags);
+
+ tail = priv->tail[ch];
+ while (priv->fifo[ch][tail].desc) {
+ request = &priv->fifo[ch][tail];
+
+ /* descriptors with their done bits set don't get the error */
+ rmb();
+ if ((request->desc->hdr & DESC_HDR_DONE) == DESC_HDR_DONE)
+ status = 0;
+ else
+ if (!error)
+ break;
+ else
+ status = error;
+
+ dma_unmap_single(dev, request->dma_desc,
+ sizeof(struct talitos_desc), DMA_BIDIRECTIONAL);
+
+ /* copy entries so we can call callback outside lock */
+ saved_req.desc = request->desc;
+ saved_req.callback = request->callback;
+ saved_req.context = request->context;
+
+ /* release request entry in fifo */
+ smp_wmb();
+ request->desc = NULL;
+
+ /* increment fifo tail */
+ priv->tail[ch] = (tail + 1) & (priv->fifo_len - 1);
+
+ spin_unlock_irqrestore(&priv->tail_lock[ch], flags);
+ saved_req.callback(dev, saved_req.desc, saved_req.context,
+ status);
+ /* channel may resume processing in single desc error case */
+ if (error && !reset_ch && status == error)
+ return;
+ spin_lock_irqsave(&priv->tail_lock[ch], flags);
+ tail = priv->tail[ch];
+ }
+
+ spin_unlock_irqrestore(&priv->tail_lock[ch], flags);
+}
+
+/*
+ * process completed requests for channels that have done status
+ */
+static void talitos_done(unsigned long data)
+{
+ struct device *dev = (struct device *)data;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ int ch;
+
+ for (ch = 0; ch < priv->num_channels; ch++)
+ flush_channel(dev, ch, 0, 0);
+}
+
+/*
+ * locate current (offending) descriptor
+ */
+static struct talitos_desc *current_desc(struct device *dev, int ch)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ int tail = priv->tail[ch];
+ dma_addr_t cur_desc;
+
+ cur_desc = in_be32(priv->reg + TALITOS_CDPR_LO(ch));
+
+ while (priv->fifo[ch][tail].dma_desc != cur_desc) {
+ tail = (tail + 1) & (priv->fifo_len - 1);
+ if (tail == priv->tail[ch]) {
+ dev_err(dev, "couldn't locate current descriptor\n");
+ return NULL;
+ }
+ }
+
+ return priv->fifo[ch][tail].desc;
+}
+
+/*
+ * user diagnostics; report root cause of error based on execution unit status
+ */
+static void report_eu_error(struct device *dev, int ch, struct talitos_desc *desc)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ int i;
+
+ switch (desc->hdr & DESC_HDR_SEL0_MASK) {
+ case DESC_HDR_SEL0_AFEU:
+ dev_err(dev, "AFEUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_AFEUISR),
+ in_be32(priv->reg + TALITOS_AFEUISR_LO));
+ break;
+ case DESC_HDR_SEL0_DEU:
+ dev_err(dev, "DEUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_DEUISR),
+ in_be32(priv->reg + TALITOS_DEUISR_LO));
+ break;
+ case DESC_HDR_SEL0_MDEUA:
+ case DESC_HDR_SEL0_MDEUB:
+ dev_err(dev, "MDEUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_MDEUISR),
+ in_be32(priv->reg + TALITOS_MDEUISR_LO));
+ break;
+ case DESC_HDR_SEL0_RNG:
+ dev_err(dev, "RNGUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_RNGUISR),
+ in_be32(priv->reg + TALITOS_RNGUISR_LO));
+ break;
+ case DESC_HDR_SEL0_PKEU:
+ dev_err(dev, "PKEUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_PKEUISR),
+ in_be32(priv->reg + TALITOS_PKEUISR_LO));
+ break;
+ case DESC_HDR_SEL0_AESU:
+ dev_err(dev, "AESUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_AESUISR),
+ in_be32(priv->reg + TALITOS_AESUISR_LO));
+ break;
+ case DESC_HDR_SEL0_CRCU:
+ dev_err(dev, "CRCUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_CRCUISR),
+ in_be32(priv->reg + TALITOS_CRCUISR_LO));
+ break;
+ case DESC_HDR_SEL0_KEU:
+ dev_err(dev, "KEUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_KEUISR),
+ in_be32(priv->reg + TALITOS_KEUISR_LO));
+ break;
+ }
+
+ switch (desc->hdr & DESC_HDR_SEL1_MASK) {
+ case DESC_HDR_SEL1_MDEUA:
+ case DESC_HDR_SEL1_MDEUB:
+ dev_err(dev, "MDEUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_MDEUISR),
+ in_be32(priv->reg + TALITOS_MDEUISR_LO));
+ break;
+ case DESC_HDR_SEL1_CRCU:
+ dev_err(dev, "CRCUISR 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_CRCUISR),
+ in_be32(priv->reg + TALITOS_CRCUISR_LO));
+ break;
+ }
+
+ for (i = 0; i < 8; i++)
+ dev_err(dev, "DESCBUF 0x%08x_%08x\n",
+ in_be32(priv->reg + TALITOS_DESCBUF(ch) + 8*i),
+ in_be32(priv->reg + TALITOS_DESCBUF_LO(ch) + 8*i));
+}
+
+/*
+ * recover from error interrupts
+ */
+static void talitos_error(unsigned long data)
+{
+ struct device *dev = (struct device *)data;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ unsigned int timeout = TALITOS_TIMEOUT;
+ int ch, error, reset_dev = 0, reset_ch = 0;
+ u32 isr, isr_lo, v, v_lo;
+
+ isr = in_be32(priv->reg + TALITOS_ISR);
+ isr_lo = in_be32(priv->reg + TALITOS_ISR_LO);
+
+ for (ch = 0; ch < priv->num_channels; ch++) {
+ /* skip channels without errors */
+ if (!(isr & (1 << (ch * 2 + 1))))
+ continue;
+
+ error = -EINVAL;
+
+ v = in_be32(priv->reg + TALITOS_CCPSR(ch));
+ v_lo = in_be32(priv->reg + TALITOS_CCPSR_LO(ch));
+
+ if (v_lo & TALITOS_CCPSR_LO_DOF) {
+ dev_err(dev, "double fetch fifo overflow error\n");
+ error = -EAGAIN;
+ reset_ch = 1;
+ }
+ if (v_lo & TALITOS_CCPSR_LO_SOF) {
+ /* h/w dropped descriptor */
+ dev_err(dev, "single fetch fifo overflow error\n");
+ error = -EAGAIN;
+ }
+ if (v_lo & TALITOS_CCPSR_LO_MDTE)
+ dev_err(dev, "master data transfer error\n");
+ if (v_lo & TALITOS_CCPSR_LO_SGDLZ)
+ dev_err(dev, "s/g data length zero error\n");
+ if (v_lo & TALITOS_CCPSR_LO_FPZ)
+ dev_err(dev, "fetch pointer zero error\n");
+ if (v_lo & TALITOS_CCPSR_LO_IDH)
+ dev_err(dev, "illegal descriptor header error\n");
+ if (v_lo & TALITOS_CCPSR_LO_IEU)
+ dev_err(dev, "invalid execution unit error\n");
+ if (v_lo & TALITOS_CCPSR_LO_EU)
+ report_eu_error(dev, ch, current_desc(dev, ch));
+ if (v_lo & TALITOS_CCPSR_LO_GB)
+ dev_err(dev, "gather boundary error\n");
+ if (v_lo & TALITOS_CCPSR_LO_GRL)
+ dev_err(dev, "gather return/length error\n");
+ if (v_lo & TALITOS_CCPSR_LO_SB)
+ dev_err(dev, "scatter boundary error\n");
+ if (v_lo & TALITOS_CCPSR_LO_SRL)
+ dev_err(dev, "scatter return/length error\n");
+
+ flush_channel(dev, ch, error, reset_ch);
+
+ if (reset_ch) {
+ reset_channel(dev, ch);
+ } else {
+ setbits32(priv->reg + TALITOS_CCCR(ch),
+ TALITOS_CCCR_CONT);
+ setbits32(priv->reg + TALITOS_CCCR_LO(ch), 0);
+ while ((in_be32(priv->reg + TALITOS_CCCR(ch)) &
+ TALITOS_CCCR_CONT) && --timeout)
+ cpu_relax();
+ if (timeout == 0) {
+ dev_err(dev, "failed to restart channel %d\n",
+ ch);
+ reset_dev = 1;
+ }
+ }
+ }
+ if (reset_dev || isr & ~TALITOS_ISR_CHERR || isr_lo) {
+ dev_err(dev, "done overflow, internal time out, or rngu error: "
+ "ISR 0x%08x_%08x\n", isr, isr_lo);
+
+ /* purge request queues */
+ for (ch = 0; ch < priv->num_channels; ch++)
+ flush_channel(dev, ch, -EIO, 1);
+
+ /* reset and reinitialize the device */
+ init_device(dev);
+ }
+}
+
+static irqreturn_t talitos_interrupt(int irq, void *data)
+{
+ struct device *dev = data;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ u32 isr, isr_lo;
+
+ isr = in_be32(priv->reg + TALITOS_ISR);
+ isr_lo = in_be32(priv->reg + TALITOS_ISR_LO);
+
+ /* ack */
+ out_be32(priv->reg + TALITOS_ICR, isr);
+ out_be32(priv->reg + TALITOS_ICR_LO, isr_lo);
+
+ if (unlikely((isr & ~TALITOS_ISR_CHDONE) || isr_lo))
+ talitos_error((unsigned long)data);
+ else
+ if (likely(isr & TALITOS_ISR_CHDONE))
+ tasklet_schedule(&priv->done_task);
+
+ return (isr || isr_lo) ? IRQ_HANDLED : IRQ_NONE;
+}
+
+/*
+ * hwrng
+ */
+static int talitos_rng_data_present(struct hwrng *rng, int wait)
+{
+ struct device *dev = (struct device *)rng->priv;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ u32 ofl;
+ int i;
+
+ for (i = 0; i < 20; i++) {
+ ofl = in_be32(priv->reg + TALITOS_RNGUSR_LO) &
+ TALITOS_RNGUSR_LO_OFL;
+ if (ofl || !wait)
+ break;
+ udelay(10);
+ }
+
+ return !!ofl;
+}
+
+static int talitos_rng_data_read(struct hwrng *rng, u32 *data)
+{
+ struct device *dev = (struct device *)rng->priv;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+
+ /* rng fifo requires 64-bit accesses */
+ *data = in_be32(priv->reg + TALITOS_RNGU_FIFO);
+ *data = in_be32(priv->reg + TALITOS_RNGU_FIFO_LO);
+
+ return sizeof(u32);
+}
+
+static int talitos_rng_init(struct hwrng *rng)
+{
+ struct device *dev = (struct device *)rng->priv;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ unsigned int timeout = TALITOS_TIMEOUT;
+
+ setbits32(priv->reg + TALITOS_RNGURCR_LO, TALITOS_RNGURCR_LO_SR);
+ while (!(in_be32(priv->reg + TALITOS_RNGUSR_LO) & TALITOS_RNGUSR_LO_RD)
+ && --timeout)
+ cpu_relax();
+ if (timeout == 0) {
+ dev_err(dev, "failed to reset rng hw\n");
+ return -ENODEV;
+ }
+
+ /* start generating */
+ setbits32(priv->reg + TALITOS_RNGUDSR_LO, 0);
+
+ return 0;
+}
+
+static int talitos_register_rng(struct device *dev)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+
+ priv->rng.name = dev_driver_string(dev),
+ priv->rng.init = talitos_rng_init,
+ priv->rng.data_present = talitos_rng_data_present,
+ priv->rng.data_read = talitos_rng_data_read,
+ priv->rng.priv = (unsigned long)dev;
+
+ return hwrng_register(&priv->rng);
+}
+
+static void talitos_unregister_rng(struct device *dev)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+
+ hwrng_unregister(&priv->rng);
+}
+
+/*
+ * crypto alg
+ */
+#define TALITOS_CRA_PRIORITY 3000
+#define TALITOS_MAX_KEY_SIZE 64
+#define TALITOS_MAX_IV_LENGTH 16 /* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */
+
+#define MD5_DIGEST_SIZE 16
+
+struct talitos_ctx {
+ struct device *dev;
+ __be32 desc_hdr_template;
+ u8 key[TALITOS_MAX_KEY_SIZE];
+ u8 iv[TALITOS_MAX_IV_LENGTH];
+ unsigned int keylen;
+ unsigned int enckeylen;
+ unsigned int authkeylen;
+ unsigned int authsize;
+};
+
+static int aead_authenc_setauthsize(struct crypto_aead *authenc,
+ unsigned int authsize)
+{
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+
+ ctx->authsize = authsize;
+
+ return 0;
+}
+
+static int aead_authenc_setkey(struct crypto_aead *authenc,
+ const u8 *key, unsigned int keylen)
+{
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+ struct rtattr *rta = (void *)key;
+ struct crypto_authenc_key_param *param;
+ unsigned int authkeylen;
+ unsigned int enckeylen;
+
+ if (!RTA_OK(rta, keylen))
+ goto badkey;
+
+ if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
+ goto badkey;
+
+ if (RTA_PAYLOAD(rta) < sizeof(*param))
+ goto badkey;
+
+ param = RTA_DATA(rta);
+ enckeylen = be32_to_cpu(param->enckeylen);
+
+ key += RTA_ALIGN(rta->rta_len);
+ keylen -= RTA_ALIGN(rta->rta_len);
+
+ if (keylen < enckeylen)
+ goto badkey;
+
+ authkeylen = keylen - enckeylen;
+
+ if (keylen > TALITOS_MAX_KEY_SIZE)
+ goto badkey;
+
+ memcpy(&ctx->key, key, keylen);
+
+ ctx->keylen = keylen;
+ ctx->enckeylen = enckeylen;
+ ctx->authkeylen = authkeylen;
+
+ return 0;
+
+badkey:
+ crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
+ return -EINVAL;
+}
+
+/*
+ * ipsec_esp_edesc - s/w-extended ipsec_esp descriptor
+ * @src_nents: number of segments in input scatterlist
+ * @dst_nents: number of segments in output scatterlist
+ * @dma_len: length of dma mapped link_tbl space
+ * @dma_link_tbl: bus physical address of link_tbl
+ * @desc: h/w descriptor
+ * @link_tbl: input and output h/w link tables (if {src,dst}_nents > 1)
+ *
+ * if decrypting (with authcheck), or either one of src_nents or dst_nents
+ * is greater than 1, an integrity check value is concatenated to the end
+ * of link_tbl data
+ */
+struct ipsec_esp_edesc {
+ int src_nents;
+ int dst_nents;
+ int dma_len;
+ dma_addr_t dma_link_tbl;
+ struct talitos_desc desc;
+ struct talitos_ptr link_tbl[0];
+};
+
+static void ipsec_esp_unmap(struct device *dev,
+ struct ipsec_esp_edesc *edesc,
+ struct aead_request *areq)
+{
+ unmap_single_talitos_ptr(dev, &edesc->desc.ptr[6], DMA_FROM_DEVICE);
+ unmap_single_talitos_ptr(dev, &edesc->desc.ptr[3], DMA_TO_DEVICE);
+ unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], DMA_TO_DEVICE);
+ unmap_single_talitos_ptr(dev, &edesc->desc.ptr[0], DMA_TO_DEVICE);
+
+ dma_unmap_sg(dev, areq->assoc, 1, DMA_TO_DEVICE);
+
+ if (areq->src != areq->dst) {
+ dma_unmap_sg(dev, areq->src, edesc->src_nents ? : 1,
+ DMA_TO_DEVICE);
+ dma_unmap_sg(dev, areq->dst, edesc->dst_nents ? : 1,
+ DMA_FROM_DEVICE);
+ } else {
+ dma_unmap_sg(dev, areq->src, edesc->src_nents ? : 1,
+ DMA_BIDIRECTIONAL);
+ }
+
+ if (edesc->dma_len)
+ dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len,
+ DMA_BIDIRECTIONAL);
+}
+
+/*
+ * ipsec_esp descriptor callbacks
+ */
+static void ipsec_esp_encrypt_done(struct device *dev,
+ struct talitos_desc *desc, void *context,
+ int err)
+{
+ struct aead_request *areq = context;
+ struct ipsec_esp_edesc *edesc =
+ container_of(desc, struct ipsec_esp_edesc, desc);
+ struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+ struct scatterlist *sg;
+ void *icvdata;
+
+ ipsec_esp_unmap(dev, edesc, areq);
+
+ /* copy the generated ICV to dst */
+ if (edesc->dma_len) {
+ icvdata = &edesc->link_tbl[edesc->src_nents +
+ edesc->dst_nents + 1];
+ sg = sg_last(areq->dst, edesc->dst_nents);
+ memcpy((char *)sg_virt(sg) + sg->length - ctx->authsize,
+ icvdata, ctx->authsize);
+ }
+
+ kfree(edesc);
+
+ aead_request_complete(areq, err);
+}
+
+static void ipsec_esp_decrypt_done(struct device *dev,
+ struct talitos_desc *desc, void *context,
+ int err)
+{
+ struct aead_request *req = context;
+ struct ipsec_esp_edesc *edesc =
+ container_of(desc, struct ipsec_esp_edesc, desc);
+ struct crypto_aead *authenc = crypto_aead_reqtfm(req);
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+ struct scatterlist *sg;
+ void *icvdata;
+
+ ipsec_esp_unmap(dev, edesc, req);
+
+ if (!err) {
+ /* auth check */
+ if (edesc->dma_len)
+ icvdata = &edesc->link_tbl[edesc->src_nents +
+ edesc->dst_nents + 1];
+ else
+ icvdata = &edesc->link_tbl[0];
+
+ sg = sg_last(req->dst, edesc->dst_nents ? : 1);
+ err = memcmp(icvdata, (char *)sg_virt(sg) + sg->length -
+ ctx->authsize, ctx->authsize) ? -EBADMSG : 0;
+ }
+
+ kfree(edesc);
+
+ aead_request_complete(req, err);
+}
+
+/*
+ * convert scatterlist to SEC h/w link table format
+ * stop at cryptlen bytes
+ */
+static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
+ int cryptlen, struct talitos_ptr *link_tbl_ptr)
+{
+ int n_sg = sg_count;
+
+ while (n_sg--) {
+ link_tbl_ptr->ptr = cpu_to_be32(sg_dma_address(sg));
+ link_tbl_ptr->len = cpu_to_be16(sg_dma_len(sg));
+ link_tbl_ptr->j_extent = 0;
+ link_tbl_ptr++;
+ cryptlen -= sg_dma_len(sg);
+ sg = sg_next(sg);
+ }
+
+ /* adjust (decrease) last one (or two) entry's len to cryptlen */
+ link_tbl_ptr--;
+ while (link_tbl_ptr->len <= (-cryptlen)) {
+ /* Empty this entry, and move to previous one */
+ cryptlen += be16_to_cpu(link_tbl_ptr->len);
+ link_tbl_ptr->len = 0;
+ sg_count--;
+ link_tbl_ptr--;
+ }
+ link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len)
+ + cryptlen);
+
+ /* tag end of link table */
+ link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
+
+ return sg_count;
+}
+
+/*
+ * fill in and submit ipsec_esp descriptor
+ */
+static int ipsec_esp(struct ipsec_esp_edesc *edesc, struct aead_request *areq,
+ u8 *giv, u64 seq,
+ void (*callback) (struct device *dev,
+ struct talitos_desc *desc,
+ void *context, int error))
+{
+ struct crypto_aead *aead = crypto_aead_reqtfm(areq);
+ struct talitos_ctx *ctx = crypto_aead_ctx(aead);
+ struct device *dev = ctx->dev;
+ struct talitos_desc *desc = &edesc->desc;
+ unsigned int cryptlen = areq->cryptlen;
+ unsigned int authsize = ctx->authsize;
+ unsigned int ivsize;
+ int sg_count;
+
+ /* hmac key */
+ map_single_talitos_ptr(dev, &desc->ptr[0], ctx->authkeylen, &ctx->key,
+ 0, DMA_TO_DEVICE);
+ /* hmac data */
+ map_single_talitos_ptr(dev, &desc->ptr[1], sg_virt(areq->src) -
+ sg_virt(areq->assoc), sg_virt(areq->assoc), 0,
+ DMA_TO_DEVICE);
+ /* cipher iv */
+ ivsize = crypto_aead_ivsize(aead);
+ map_single_talitos_ptr(dev, &desc->ptr[2], ivsize, giv ?: areq->iv, 0,
+ DMA_TO_DEVICE);
+
+ /* cipher key */
+ map_single_talitos_ptr(dev, &desc->ptr[3], ctx->enckeylen,
+ (char *)&ctx->key + ctx->authkeylen, 0,
+ DMA_TO_DEVICE);
+
+ /*
+ * cipher in
+ * map and adjust cipher len to aead request cryptlen.
+ * extent is bytes of HMAC postpended to ciphertext,
+ * typically 12 for ipsec
+ */
+ desc->ptr[4].len = cpu_to_be16(cryptlen);
+ desc->ptr[4].j_extent = authsize;
+
+ if (areq->src == areq->dst)
+ sg_count = dma_map_sg(dev, areq->src, edesc->src_nents ? : 1,
+ DMA_BIDIRECTIONAL);
+ else
+ sg_count = dma_map_sg(dev, areq->src, edesc->src_nents ? : 1,
+ DMA_TO_DEVICE);
+
+ if (sg_count == 1) {
+ desc->ptr[4].ptr = cpu_to_be32(sg_dma_address(areq->src));
+ } else {
+ sg_count = sg_to_link_tbl(areq->src, sg_count, cryptlen,
+ &edesc->link_tbl[0]);
+ if (sg_count > 1) {
+ desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP;
+ desc->ptr[4].ptr = cpu_to_be32(edesc->dma_link_tbl);
+ dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl,
+ edesc->dma_len, DMA_BIDIRECTIONAL);
+ } else {
+ /* Only one segment now, so no link tbl needed */
+ desc->ptr[4].ptr = cpu_to_be32(sg_dma_address(areq->src));
+ }
+ }
+
+ /* cipher out */
+ desc->ptr[5].len = cpu_to_be16(cryptlen);
+ desc->ptr[5].j_extent = authsize;
+
+ if (areq->src != areq->dst) {
+ sg_count = dma_map_sg(dev, areq->dst, edesc->dst_nents ? : 1,
+ DMA_FROM_DEVICE);
+ }
+
+ if (sg_count == 1) {
+ desc->ptr[5].ptr = cpu_to_be32(sg_dma_address(areq->dst));
+ } else {
+ struct talitos_ptr *link_tbl_ptr =
+ &edesc->link_tbl[edesc->src_nents];
+ struct scatterlist *sg;
+
+ desc->ptr[5].ptr = cpu_to_be32((struct talitos_ptr *)
+ edesc->dma_link_tbl +
+ edesc->src_nents);
+ if (areq->src == areq->dst) {
+ memcpy(link_tbl_ptr, &edesc->link_tbl[0],
+ edesc->src_nents * sizeof(struct talitos_ptr));
+ } else {
+ sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen,
+ link_tbl_ptr);
+ }
+ link_tbl_ptr += sg_count - 1;
+
+ /* handle case where sg_last contains the ICV exclusively */
+ sg = sg_last(areq->dst, edesc->dst_nents);
+ if (sg->length == ctx->authsize)
+ link_tbl_ptr--;
+
+ link_tbl_ptr->j_extent = 0;
+ link_tbl_ptr++;
+ link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;
+ link_tbl_ptr->len = cpu_to_be16(authsize);
+
+ /* icv data follows link tables */
+ link_tbl_ptr->ptr = cpu_to_be32((struct talitos_ptr *)
+ edesc->dma_link_tbl +
+ edesc->src_nents +
+ edesc->dst_nents + 1);
+
+ desc->ptr[5].j_extent |= DESC_PTR_LNKTBL_JUMP;
+ dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl,
+ edesc->dma_len, DMA_BIDIRECTIONAL);
+ }
+
+ /* iv out */
+ map_single_talitos_ptr(dev, &desc->ptr[6], ivsize, ctx->iv, 0,
+ DMA_FROM_DEVICE);
+
+ return talitos_submit(dev, desc, callback, areq);
+}
+
+
+/*
+ * derive number of elements in scatterlist
+ */
+static int sg_count(struct scatterlist *sg_list, int nbytes)
+{
+ struct scatterlist *sg = sg_list;
+ int sg_nents = 0;
+
+ while (nbytes) {
+ sg_nents++;
+ nbytes -= sg->length;
+ sg = sg_next(sg);
+ }
+
+ return sg_nents;
+}
+
+/*
+ * allocate and map the ipsec_esp extended descriptor
+ */
+static struct ipsec_esp_edesc *ipsec_esp_edesc_alloc(struct aead_request *areq,
+ int icv_stashing)
+{
+ struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+ struct ipsec_esp_edesc *edesc;
+ int src_nents, dst_nents, alloc_len, dma_len;
+
+ if (areq->cryptlen + ctx->authsize > TALITOS_MAX_DATA_LEN) {
+ dev_err(ctx->dev, "cryptlen exceeds h/w max limit\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ src_nents = sg_count(areq->src, areq->cryptlen + ctx->authsize);
+ src_nents = (src_nents == 1) ? 0 : src_nents;
+
+ if (areq->dst == areq->src) {
+ dst_nents = src_nents;
+ } else {
+ dst_nents = sg_count(areq->dst, areq->cryptlen + ctx->authsize);
+ dst_nents = (dst_nents == 1) ? 0 : src_nents;
+ }
+
+ /*
+ * allocate space for base edesc plus the link tables,
+ * allowing for a separate entry for the generated ICV (+ 1),
+ * and the ICV data itself
+ */
+ alloc_len = sizeof(struct ipsec_esp_edesc);
+ if (src_nents || dst_nents) {
+ dma_len = (src_nents + dst_nents + 1) *
+ sizeof(struct talitos_ptr) + ctx->authsize;
+ alloc_len += dma_len;
+ } else {
+ dma_len = 0;
+ alloc_len += icv_stashing ? ctx->authsize : 0;
+ }
+
+ edesc = kmalloc(alloc_len, GFP_DMA);
+ if (!edesc) {
+ dev_err(ctx->dev, "could not allocate edescriptor\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ edesc->src_nents = src_nents;
+ edesc->dst_nents = dst_nents;
+ edesc->dma_len = dma_len;
+ edesc->dma_link_tbl = dma_map_single(ctx->dev, &edesc->link_tbl[0],
+ edesc->dma_len, DMA_BIDIRECTIONAL);
+
+ return edesc;
+}
+
+static int aead_authenc_encrypt(struct aead_request *req)
+{
+ struct crypto_aead *authenc = crypto_aead_reqtfm(req);
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+ struct ipsec_esp_edesc *edesc;
+
+ /* allocate extended descriptor */
+ edesc = ipsec_esp_edesc_alloc(req, 0);
+ if (IS_ERR(edesc))
+ return PTR_ERR(edesc);
+
+ /* set encrypt */
+ edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT;
+
+ return ipsec_esp(edesc, req, NULL, 0, ipsec_esp_encrypt_done);
+}
+
+static int aead_authenc_decrypt(struct aead_request *req)
+{
+ struct crypto_aead *authenc = crypto_aead_reqtfm(req);
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+ unsigned int authsize = ctx->authsize;
+ struct ipsec_esp_edesc *edesc;
+ struct scatterlist *sg;
+ void *icvdata;
+
+ req->cryptlen -= authsize;
+
+ /* allocate extended descriptor */
+ edesc = ipsec_esp_edesc_alloc(req, 1);
+ if (IS_ERR(edesc))
+ return PTR_ERR(edesc);
+
+ /* stash incoming ICV for later cmp with ICV generated by the h/w */
+ if (edesc->dma_len)
+ icvdata = &edesc->link_tbl[edesc->src_nents +
+ edesc->dst_nents + 1];
+ else
+ icvdata = &edesc->link_tbl[0];
+
+ sg = sg_last(req->src, edesc->src_nents ? : 1);
+
+ memcpy(icvdata, (char *)sg_virt(sg) + sg->length - ctx->authsize,
+ ctx->authsize);
+
+ /* decrypt */
+ edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_DIR_INBOUND;
+
+ return ipsec_esp(edesc, req, NULL, 0, ipsec_esp_decrypt_done);
+}
+
+static int aead_authenc_givencrypt(
+ struct aead_givcrypt_request *req)
+{
+ struct aead_request *areq = &req->areq;
+ struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
+ struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
+ struct ipsec_esp_edesc *edesc;
+
+ /* allocate extended descriptor */
+ edesc = ipsec_esp_edesc_alloc(areq, 0);
+ if (IS_ERR(edesc))
+ return PTR_ERR(edesc);
+
+ /* set encrypt */
+ edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT;
+
+ memcpy(req->giv, ctx->iv, crypto_aead_ivsize(authenc));
+
+ return ipsec_esp(edesc, areq, req->giv, req->seq,
+ ipsec_esp_encrypt_done);
+}
+
+struct talitos_alg_template {
+ char name[CRYPTO_MAX_ALG_NAME];
+ char driver_name[CRYPTO_MAX_ALG_NAME];
+ unsigned int blocksize;
+ struct aead_alg aead;
+ struct device *dev;
+ __be32 desc_hdr_template;
+};
+
+static struct talitos_alg_template driver_algs[] = {
+ /* single-pass ipsec_esp descriptor */
+ {
+ .name = "authenc(hmac(sha1),cbc(aes))",
+ .driver_name = "authenc-hmac-sha1-cbc-aes-talitos",
+ .blocksize = AES_BLOCK_SIZE,
+ .aead = {
+ .setkey = aead_authenc_setkey,
+ .setauthsize = aead_authenc_setauthsize,
+ .encrypt = aead_authenc_encrypt,
+ .decrypt = aead_authenc_decrypt,
+ .givencrypt = aead_authenc_givencrypt,
+ .geniv = "<built-in>",
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ },
+ .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
+ DESC_HDR_SEL0_AESU |
+ DESC_HDR_MODE0_AESU_CBC |
+ DESC_HDR_SEL1_MDEUA |
+ DESC_HDR_MODE1_MDEU_INIT |
+ DESC_HDR_MODE1_MDEU_PAD |
+ DESC_HDR_MODE1_MDEU_SHA1_HMAC,
+ },
+ {
+ .name = "authenc(hmac(sha1),cbc(des3_ede))",
+ .driver_name = "authenc-hmac-sha1-cbc-3des-talitos",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .aead = {
+ .setkey = aead_authenc_setkey,
+ .setauthsize = aead_authenc_setauthsize,
+ .encrypt = aead_authenc_encrypt,
+ .decrypt = aead_authenc_decrypt,
+ .givencrypt = aead_authenc_givencrypt,
+ .geniv = "<built-in>",
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ },
+ .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
+ DESC_HDR_SEL0_DEU |
+ DESC_HDR_MODE0_DEU_CBC |
+ DESC_HDR_MODE0_DEU_3DES |
+ DESC_HDR_SEL1_MDEUA |
+ DESC_HDR_MODE1_MDEU_INIT |
+ DESC_HDR_MODE1_MDEU_PAD |
+ DESC_HDR_MODE1_MDEU_SHA1_HMAC,
+ },
+ {
+ .name = "authenc(hmac(sha256),cbc(aes))",
+ .driver_name = "authenc-hmac-sha256-cbc-aes-talitos",
+ .blocksize = AES_BLOCK_SIZE,
+ .aead = {
+ .setkey = aead_authenc_setkey,
+ .setauthsize = aead_authenc_setauthsize,
+ .encrypt = aead_authenc_encrypt,
+ .decrypt = aead_authenc_decrypt,
+ .givencrypt = aead_authenc_givencrypt,
+ .geniv = "<built-in>",
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ },
+ .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
+ DESC_HDR_SEL0_AESU |
+ DESC_HDR_MODE0_AESU_CBC |
+ DESC_HDR_SEL1_MDEUA |
+ DESC_HDR_MODE1_MDEU_INIT |
+ DESC_HDR_MODE1_MDEU_PAD |
+ DESC_HDR_MODE1_MDEU_SHA256_HMAC,
+ },
+ {
+ .name = "authenc(hmac(sha256),cbc(des3_ede))",
+ .driver_name = "authenc-hmac-sha256-cbc-3des-talitos",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .aead = {
+ .setkey = aead_authenc_setkey,
+ .setauthsize = aead_authenc_setauthsize,
+ .encrypt = aead_authenc_encrypt,
+ .decrypt = aead_authenc_decrypt,
+ .givencrypt = aead_authenc_givencrypt,
+ .geniv = "<built-in>",
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ },
+ .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
+ DESC_HDR_SEL0_DEU |
+ DESC_HDR_MODE0_DEU_CBC |
+ DESC_HDR_MODE0_DEU_3DES |
+ DESC_HDR_SEL1_MDEUA |
+ DESC_HDR_MODE1_MDEU_INIT |
+ DESC_HDR_MODE1_MDEU_PAD |
+ DESC_HDR_MODE1_MDEU_SHA256_HMAC,
+ },
+ {
+ .name = "authenc(hmac(md5),cbc(aes))",
+ .driver_name = "authenc-hmac-md5-cbc-aes-talitos",
+ .blocksize = AES_BLOCK_SIZE,
+ .aead = {
+ .setkey = aead_authenc_setkey,
+ .setauthsize = aead_authenc_setauthsize,
+ .encrypt = aead_authenc_encrypt,
+ .decrypt = aead_authenc_decrypt,
+ .givencrypt = aead_authenc_givencrypt,
+ .geniv = "<built-in>",
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ },
+ .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
+ DESC_HDR_SEL0_AESU |
+ DESC_HDR_MODE0_AESU_CBC |
+ DESC_HDR_SEL1_MDEUA |
+ DESC_HDR_MODE1_MDEU_INIT |
+ DESC_HDR_MODE1_MDEU_PAD |
+ DESC_HDR_MODE1_MDEU_MD5_HMAC,
+ },
+ {
+ .name = "authenc(hmac(md5),cbc(des3_ede))",
+ .driver_name = "authenc-hmac-md5-cbc-3des-talitos",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .aead = {
+ .setkey = aead_authenc_setkey,
+ .setauthsize = aead_authenc_setauthsize,
+ .encrypt = aead_authenc_encrypt,
+ .decrypt = aead_authenc_decrypt,
+ .givencrypt = aead_authenc_givencrypt,
+ .geniv = "<built-in>",
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .maxauthsize = MD5_DIGEST_SIZE,
+ },
+ .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
+ DESC_HDR_SEL0_DEU |
+ DESC_HDR_MODE0_DEU_CBC |
+ DESC_HDR_MODE0_DEU_3DES |
+ DESC_HDR_SEL1_MDEUA |
+ DESC_HDR_MODE1_MDEU_INIT |
+ DESC_HDR_MODE1_MDEU_PAD |
+ DESC_HDR_MODE1_MDEU_MD5_HMAC,
+ }
+};
+
+struct talitos_crypto_alg {
+ struct list_head entry;
+ struct device *dev;
+ __be32 desc_hdr_template;
+ struct crypto_alg crypto_alg;
+};
+
+static int talitos_cra_init(struct crypto_tfm *tfm)
+{
+ struct crypto_alg *alg = tfm->__crt_alg;
+ struct talitos_crypto_alg *talitos_alg =
+ container_of(alg, struct talitos_crypto_alg, crypto_alg);
+ struct talitos_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ /* update context with ptr to dev */
+ ctx->dev = talitos_alg->dev;
+ /* copy descriptor header template value */
+ ctx->desc_hdr_template = talitos_alg->desc_hdr_template;
+
+ /* random first IV */
+ get_random_bytes(ctx->iv, TALITOS_MAX_IV_LENGTH);
+
+ return 0;
+}
+
+/*
+ * given the alg's descriptor header template, determine whether descriptor
+ * type and primary/secondary execution units required match the hw
+ * capabilities description provided in the device tree node.
+ */
+static int hw_supports(struct device *dev, __be32 desc_hdr_template)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ int ret;
+
+ ret = (1 << DESC_TYPE(desc_hdr_template) & priv->desc_types) &&
+ (1 << PRIMARY_EU(desc_hdr_template) & priv->exec_units);
+
+ if (SECONDARY_EU(desc_hdr_template))
+ ret = ret && (1 << SECONDARY_EU(desc_hdr_template)
+ & priv->exec_units);
+
+ return ret;
+}
+
+static int __devexit talitos_remove(struct of_device *ofdev)
+{
+ struct device *dev = &ofdev->dev;
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ struct talitos_crypto_alg *t_alg, *n;
+ int i;
+
+ list_for_each_entry_safe(t_alg, n, &priv->alg_list, entry) {
+ crypto_unregister_alg(&t_alg->crypto_alg);
+ list_del(&t_alg->entry);
+ kfree(t_alg);
+ }
+
+ if (hw_supports(dev, DESC_HDR_SEL0_RNG))
+ talitos_unregister_rng(dev);
+
+ kfree(priv->tail);
+ kfree(priv->head);
+
+ if (priv->fifo)
+ for (i = 0; i < priv->num_channels; i++)
+ kfree(priv->fifo[i]);
+
+ kfree(priv->fifo);
+ kfree(priv->head_lock);
+ kfree(priv->tail_lock);
+
+ if (priv->irq != NO_IRQ) {
+ free_irq(priv->irq, dev);
+ irq_dispose_mapping(priv->irq);
+ }
+
+ tasklet_kill(&priv->done_task);
+ tasklet_kill(&priv->error_task);
+
+ iounmap(priv->reg);
+
+ dev_set_drvdata(dev, NULL);
+
+ kfree(priv);
+
+ return 0;
+}
+
+static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
+ struct talitos_alg_template
+ *template)
+{
+ struct talitos_crypto_alg *t_alg;
+ struct crypto_alg *alg;
+
+ t_alg = kzalloc(sizeof(struct talitos_crypto_alg), GFP_KERNEL);
+ if (!t_alg)
+ return ERR_PTR(-ENOMEM);
+
+ alg = &t_alg->crypto_alg;
+
+ snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", template->name);
+ snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
+ template->driver_name);
+ alg->cra_module = THIS_MODULE;
+ alg->cra_init = talitos_cra_init;
+ alg->cra_priority = TALITOS_CRA_PRIORITY;
+ alg->cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC;
+ alg->cra_blocksize = template->blocksize;
+ alg->cra_alignmask = 0;
+ alg->cra_type = &crypto_aead_type;
+ alg->cra_ctxsize = sizeof(struct talitos_ctx);
+ alg->cra_u.aead = template->aead;
+
+ t_alg->desc_hdr_template = template->desc_hdr_template;
+ t_alg->dev = dev;
+
+ return t_alg;
+}
+
+static int talitos_probe(struct of_device *ofdev,
+ const struct of_device_id *match)
+{
+ struct device *dev = &ofdev->dev;
+ struct device_node *np = ofdev->node;
+ struct talitos_private *priv;
+ const unsigned int *prop;
+ int i, err;
+
+ priv = kzalloc(sizeof(struct talitos_private), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, priv);
+
+ priv->ofdev = ofdev;
+
+ tasklet_init(&priv->done_task, talitos_done, (unsigned long)dev);
+ tasklet_init(&priv->error_task, talitos_error, (unsigned long)dev);
+
+ priv->irq = irq_of_parse_and_map(np, 0);
+
+ if (priv->irq == NO_IRQ) {
+ dev_err(dev, "failed to map irq\n");
+ err = -EINVAL;
+ goto err_out;
+ }
+
+ /* get the irq line */
+ err = request_irq(priv->irq, talitos_interrupt, 0,
+ dev_driver_string(dev), dev);
+ if (err) {
+ dev_err(dev, "failed to request irq %d\n", priv->irq);
+ irq_dispose_mapping(priv->irq);
+ priv->irq = NO_IRQ;
+ goto err_out;
+ }
+
+ priv->reg = of_iomap(np, 0);
+ if (!priv->reg) {
+ dev_err(dev, "failed to of_iomap\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ /* get SEC version capabilities from device tree */
+ prop = of_get_property(np, "fsl,num-channels", NULL);
+ if (prop)
+ priv->num_channels = *prop;
+
+ prop = of_get_property(np, "fsl,channel-fifo-len", NULL);
+ if (prop)
+ priv->chfifo_len = *prop;
+
+ prop = of_get_property(np, "fsl,exec-units-mask", NULL);
+ if (prop)
+ priv->exec_units = *prop;
+
+ prop = of_get_property(np, "fsl,descriptor-types-mask", NULL);
+ if (prop)
+ priv->desc_types = *prop;
+
+ if (!is_power_of_2(priv->num_channels) || !priv->chfifo_len ||
+ !priv->exec_units || !priv->desc_types) {
+ dev_err(dev, "invalid property data in device tree node\n");
+ err = -EINVAL;
+ goto err_out;
+ }
+
+ of_node_put(np);
+ np = NULL;
+
+ priv->head_lock = kmalloc(sizeof(spinlock_t) * priv->num_channels,
+ GFP_KERNEL);
+ priv->tail_lock = kmalloc(sizeof(spinlock_t) * priv->num_channels,
+ GFP_KERNEL);
+ if (!priv->head_lock || !priv->tail_lock) {
+ dev_err(dev, "failed to allocate fifo locks\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ for (i = 0; i < priv->num_channels; i++) {
+ spin_lock_init(&priv->head_lock[i]);
+ spin_lock_init(&priv->tail_lock[i]);
+ }
+
+ priv->fifo = kmalloc(sizeof(struct talitos_request *) *
+ priv->num_channels, GFP_KERNEL);
+ if (!priv->fifo) {
+ dev_err(dev, "failed to allocate request fifo\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ priv->fifo_len = roundup_pow_of_two(priv->chfifo_len);
+
+ for (i = 0; i < priv->num_channels; i++) {
+ priv->fifo[i] = kzalloc(sizeof(struct talitos_request) *
+ priv->fifo_len, GFP_KERNEL);
+ if (!priv->fifo[i]) {
+ dev_err(dev, "failed to allocate request fifo %d\n", i);
+ err = -ENOMEM;
+ goto err_out;
+ }
+ }
+
+ priv->head = kzalloc(sizeof(int) * priv->num_channels, GFP_KERNEL);
+ priv->tail = kzalloc(sizeof(int) * priv->num_channels, GFP_KERNEL);
+ if (!priv->head || !priv->tail) {
+ dev_err(dev, "failed to allocate request index space\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ /* reset and initialize the h/w */
+ err = init_device(dev);
+ if (err) {
+ dev_err(dev, "failed to initialize device\n");
+ goto err_out;
+ }
+
+ /* register the RNG, if available */
+ if (hw_supports(dev, DESC_HDR_SEL0_RNG)) {
+ err = talitos_register_rng(dev);
+ if (err) {
+ dev_err(dev, "failed to register hwrng: %d\n", err);
+ goto err_out;
+ } else
+ dev_info(dev, "hwrng\n");
+ }
+
+ /* register crypto algorithms the device supports */
+ INIT_LIST_HEAD(&priv->alg_list);
+
+ for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
+ if (hw_supports(dev, driver_algs[i].desc_hdr_template)) {
+ struct talitos_crypto_alg *t_alg;
+
+ t_alg = talitos_alg_alloc(dev, &driver_algs[i]);
+ if (IS_ERR(t_alg)) {
+ err = PTR_ERR(t_alg);
+ goto err_out;
+ }
+
+ err = crypto_register_alg(&t_alg->crypto_alg);
+ if (err) {
+ dev_err(dev, "%s alg registration failed\n",
+ t_alg->crypto_alg.cra_driver_name);
+ kfree(t_alg);
+ } else {
+ list_add_tail(&t_alg->entry, &priv->alg_list);
+ dev_info(dev, "%s\n",
+ t_alg->crypto_alg.cra_driver_name);
+ }
+ }
+ }
+
+ return 0;
+
+err_out:
+ talitos_remove(ofdev);
+ if (np)
+ of_node_put(np);
+
+ return err;
+}
+
+static struct of_device_id talitos_match[] = {
+ {
+ .compatible = "fsl,sec2.0",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, talitos_match);
+
+static struct of_platform_driver talitos_driver = {
+ .name = "talitos",
+ .match_table = talitos_match,
+ .probe = talitos_probe,
+ .remove = __devexit_p(talitos_remove),
+};
+
+static int __init talitos_init(void)
+{
+ return of_register_platform_driver(&talitos_driver);
+}
+module_init(talitos_init);
+
+static void __exit talitos_exit(void)
+{
+ of_unregister_platform_driver(&talitos_driver);
+}
+module_exit(talitos_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kim Phillips <kim.phillips@freescale.com>");
+MODULE_DESCRIPTION("Freescale integrated security engine (SEC) driver");
diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h
new file mode 100644
index 000000000000..c48a405abf70
--- /dev/null
+++ b/drivers/crypto/talitos.h
@@ -0,0 +1,199 @@
+/*
+ * Freescale SEC (talitos) device register and descriptor header defines
+ *
+ * Copyright (c) 2006-2008 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/*
+ * TALITOS_xxx_LO addresses point to the low data bits (32-63) of the register
+ */
+
+/* global register offset addresses */
+#define TALITOS_MCR 0x1030 /* master control register */
+#define TALITOS_MCR_LO 0x1038
+#define TALITOS_MCR_SWR 0x1 /* s/w reset */
+#define TALITOS_IMR 0x1008 /* interrupt mask register */
+#define TALITOS_IMR_INIT 0x10fff /* enable channel IRQs */
+#define TALITOS_IMR_LO 0x100C
+#define TALITOS_IMR_LO_INIT 0x20000 /* allow RNGU error IRQs */
+#define TALITOS_ISR 0x1010 /* interrupt status register */
+#define TALITOS_ISR_CHERR 0xaa /* channel errors mask */
+#define TALITOS_ISR_CHDONE 0x55 /* channel done mask */
+#define TALITOS_ISR_LO 0x1014
+#define TALITOS_ICR 0x1018 /* interrupt clear register */
+#define TALITOS_ICR_LO 0x101C
+
+/* channel register address stride */
+#define TALITOS_CH_STRIDE 0x100
+
+/* channel configuration register */
+#define TALITOS_CCCR(ch) (ch * TALITOS_CH_STRIDE + 0x1108)
+#define TALITOS_CCCR_CONT 0x2 /* channel continue */
+#define TALITOS_CCCR_RESET 0x1 /* channel reset */
+#define TALITOS_CCCR_LO(ch) (ch * TALITOS_CH_STRIDE + 0x110c)
+#define TALITOS_CCCR_LO_CDWE 0x10 /* chan. done writeback enab. */
+#define TALITOS_CCCR_LO_NT 0x4 /* notification type */
+#define TALITOS_CCCR_LO_CDIE 0x2 /* channel done IRQ enable */
+
+/* CCPSR: channel pointer status register */
+#define TALITOS_CCPSR(ch) (ch * TALITOS_CH_STRIDE + 0x1110)
+#define TALITOS_CCPSR_LO(ch) (ch * TALITOS_CH_STRIDE + 0x1114)
+#define TALITOS_CCPSR_LO_DOF 0x8000 /* double FF write oflow error */
+#define TALITOS_CCPSR_LO_SOF 0x4000 /* single FF write oflow error */
+#define TALITOS_CCPSR_LO_MDTE 0x2000 /* master data transfer error */
+#define TALITOS_CCPSR_LO_SGDLZ 0x1000 /* s/g data len zero error */
+#define TALITOS_CCPSR_LO_FPZ 0x0800 /* fetch ptr zero error */
+#define TALITOS_CCPSR_LO_IDH 0x0400 /* illegal desc hdr error */
+#define TALITOS_CCPSR_LO_IEU 0x0200 /* invalid EU error */
+#define TALITOS_CCPSR_LO_EU 0x0100 /* EU error detected */
+#define TALITOS_CCPSR_LO_GB 0x0080 /* gather boundary error */
+#define TALITOS_CCPSR_LO_GRL 0x0040 /* gather return/length error */
+#define TALITOS_CCPSR_LO_SB 0x0020 /* scatter boundary error */
+#define TALITOS_CCPSR_LO_SRL 0x0010 /* scatter return/length error */
+
+/* channel fetch fifo register */
+#define TALITOS_FF(ch) (ch * TALITOS_CH_STRIDE + 0x1148)
+#define TALITOS_FF_LO(ch) (ch * TALITOS_CH_STRIDE + 0x114c)
+
+/* current descriptor pointer register */
+#define TALITOS_CDPR(ch) (ch * TALITOS_CH_STRIDE + 0x1140)
+#define TALITOS_CDPR_LO(ch) (ch * TALITOS_CH_STRIDE + 0x1144)
+
+/* descriptor buffer register */
+#define TALITOS_DESCBUF(ch) (ch * TALITOS_CH_STRIDE + 0x1180)
+#define TALITOS_DESCBUF_LO(ch) (ch * TALITOS_CH_STRIDE + 0x1184)
+
+/* gather link table */
+#define TALITOS_GATHER(ch) (ch * TALITOS_CH_STRIDE + 0x11c0)
+#define TALITOS_GATHER_LO(ch) (ch * TALITOS_CH_STRIDE + 0x11c4)
+
+/* scatter link table */
+#define TALITOS_SCATTER(ch) (ch * TALITOS_CH_STRIDE + 0x11e0)
+#define TALITOS_SCATTER_LO(ch) (ch * TALITOS_CH_STRIDE + 0x11e4)
+
+/* execution unit interrupt status registers */
+#define TALITOS_DEUISR 0x2030 /* DES unit */
+#define TALITOS_DEUISR_LO 0x2034
+#define TALITOS_AESUISR 0x4030 /* AES unit */
+#define TALITOS_AESUISR_LO 0x4034
+#define TALITOS_MDEUISR 0x6030 /* message digest unit */
+#define TALITOS_MDEUISR_LO 0x6034
+#define TALITOS_AFEUISR 0x8030 /* arc4 unit */
+#define TALITOS_AFEUISR_LO 0x8034
+#define TALITOS_RNGUISR 0xa030 /* random number unit */
+#define TALITOS_RNGUISR_LO 0xa034
+#define TALITOS_RNGUSR 0xa028 /* rng status */
+#define TALITOS_RNGUSR_LO 0xa02c
+#define TALITOS_RNGUSR_LO_RD 0x1 /* reset done */
+#define TALITOS_RNGUSR_LO_OFL 0xff0000/* output FIFO length */
+#define TALITOS_RNGUDSR 0xa010 /* data size */
+#define TALITOS_RNGUDSR_LO 0xa014
+#define TALITOS_RNGU_FIFO 0xa800 /* output FIFO */
+#define TALITOS_RNGU_FIFO_LO 0xa804 /* output FIFO */
+#define TALITOS_RNGURCR 0xa018 /* reset control */
+#define TALITOS_RNGURCR_LO 0xa01c
+#define TALITOS_RNGURCR_LO_SR 0x1 /* software reset */
+#define TALITOS_PKEUISR 0xc030 /* public key unit */
+#define TALITOS_PKEUISR_LO 0xc034
+#define TALITOS_KEUISR 0xe030 /* kasumi unit */
+#define TALITOS_KEUISR_LO 0xe034
+#define TALITOS_CRCUISR 0xf030 /* cyclic redundancy check unit*/
+#define TALITOS_CRCUISR_LO 0xf034
+
+/*
+ * talitos descriptor header (hdr) bits
+ */
+
+/* written back when done */
+#define DESC_HDR_DONE __constant_cpu_to_be32(0xff000000)
+
+/* primary execution unit select */
+#define DESC_HDR_SEL0_MASK __constant_cpu_to_be32(0xf0000000)
+#define DESC_HDR_SEL0_AFEU __constant_cpu_to_be32(0x10000000)
+#define DESC_HDR_SEL0_DEU __constant_cpu_to_be32(0x20000000)
+#define DESC_HDR_SEL0_MDEUA __constant_cpu_to_be32(0x30000000)
+#define DESC_HDR_SEL0_MDEUB __constant_cpu_to_be32(0xb0000000)
+#define DESC_HDR_SEL0_RNG __constant_cpu_to_be32(0x40000000)
+#define DESC_HDR_SEL0_PKEU __constant_cpu_to_be32(0x50000000)
+#define DESC_HDR_SEL0_AESU __constant_cpu_to_be32(0x60000000)
+#define DESC_HDR_SEL0_KEU __constant_cpu_to_be32(0x70000000)
+#define DESC_HDR_SEL0_CRCU __constant_cpu_to_be32(0x80000000)
+
+/* primary execution unit mode (MODE0) and derivatives */
+#define DESC_HDR_MODE0_ENCRYPT __constant_cpu_to_be32(0x00100000)
+#define DESC_HDR_MODE0_AESU_CBC __constant_cpu_to_be32(0x00200000)
+#define DESC_HDR_MODE0_DEU_CBC __constant_cpu_to_be32(0x00400000)
+#define DESC_HDR_MODE0_DEU_3DES __constant_cpu_to_be32(0x00200000)
+#define DESC_HDR_MODE0_MDEU_INIT __constant_cpu_to_be32(0x01000000)
+#define DESC_HDR_MODE0_MDEU_HMAC __constant_cpu_to_be32(0x00800000)
+#define DESC_HDR_MODE0_MDEU_PAD __constant_cpu_to_be32(0x00400000)
+#define DESC_HDR_MODE0_MDEU_MD5 __constant_cpu_to_be32(0x00200000)
+#define DESC_HDR_MODE0_MDEU_SHA256 __constant_cpu_to_be32(0x00100000)
+#define DESC_HDR_MODE0_MDEU_SHA1 __constant_cpu_to_be32(0x00000000)
+#define DESC_HDR_MODE0_MDEU_MD5_HMAC (DESC_HDR_MODE0_MDEU_MD5 | \
+ DESC_HDR_MODE0_MDEU_HMAC)
+#define DESC_HDR_MODE0_MDEU_SHA256_HMAC (DESC_HDR_MODE0_MDEU_SHA256 | \
+ DESC_HDR_MODE0_MDEU_HMAC)
+#define DESC_HDR_MODE0_MDEU_SHA1_HMAC (DESC_HDR_MODE0_MDEU_SHA1 | \
+ DESC_HDR_MODE0_MDEU_HMAC)
+
+/* secondary execution unit select (SEL1) */
+#define DESC_HDR_SEL1_MASK __constant_cpu_to_be32(0x000f0000)
+#define DESC_HDR_SEL1_MDEUA __constant_cpu_to_be32(0x00030000)
+#define DESC_HDR_SEL1_MDEUB __constant_cpu_to_be32(0x000b0000)
+#define DESC_HDR_SEL1_CRCU __constant_cpu_to_be32(0x00080000)
+
+/* secondary execution unit mode (MODE1) and derivatives */
+#define DESC_HDR_MODE1_MDEU_INIT __constant_cpu_to_be32(0x00001000)
+#define DESC_HDR_MODE1_MDEU_HMAC __constant_cpu_to_be32(0x00000800)
+#define DESC_HDR_MODE1_MDEU_PAD __constant_cpu_to_be32(0x00000400)
+#define DESC_HDR_MODE1_MDEU_MD5 __constant_cpu_to_be32(0x00000200)
+#define DESC_HDR_MODE1_MDEU_SHA256 __constant_cpu_to_be32(0x00000100)
+#define DESC_HDR_MODE1_MDEU_SHA1 __constant_cpu_to_be32(0x00000000)
+#define DESC_HDR_MODE1_MDEU_MD5_HMAC (DESC_HDR_MODE1_MDEU_MD5 | \
+ DESC_HDR_MODE1_MDEU_HMAC)
+#define DESC_HDR_MODE1_MDEU_SHA256_HMAC (DESC_HDR_MODE1_MDEU_SHA256 | \
+ DESC_HDR_MODE1_MDEU_HMAC)
+#define DESC_HDR_MODE1_MDEU_SHA1_HMAC (DESC_HDR_MODE1_MDEU_SHA1 | \
+ DESC_HDR_MODE1_MDEU_HMAC)
+
+/* direction of overall data flow (DIR) */
+#define DESC_HDR_DIR_INBOUND __constant_cpu_to_be32(0x00000002)
+
+/* request done notification (DN) */
+#define DESC_HDR_DONE_NOTIFY __constant_cpu_to_be32(0x00000001)
+
+/* descriptor types */
+#define DESC_HDR_TYPE_AESU_CTR_NONSNOOP __constant_cpu_to_be32(0 << 3)
+#define DESC_HDR_TYPE_IPSEC_ESP __constant_cpu_to_be32(1 << 3)
+#define DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU __constant_cpu_to_be32(2 << 3)
+#define DESC_HDR_TYPE_HMAC_SNOOP_NO_AFEU __constant_cpu_to_be32(4 << 3)
+
+/* link table extent field bits */
+#define DESC_PTR_LNKTBL_JUMP 0x80
+#define DESC_PTR_LNKTBL_RETURN 0x02
+#define DESC_PTR_LNKTBL_NEXT 0x01