From a299c837040bb47810b9d287dfe7deed6a254995 Mon Sep 17 00:00:00 2001 From: Yuan Kang Date: Fri, 22 Jun 2012 19:48:46 -0500 Subject: crypto: caam - link_tbl rename - rename scatterlist and link_tbl functions - link_tbl changed to sec4_sg - sg_to_link_tbl_one changed to dma_to_sec4_sg_one, since no scatterlist is use Signed-off-by: Yuan Kang Signed-off-by: Kim Phillips Signed-off-by: Herbert Xu diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index ea0295d..5ab480a 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -51,7 +51,7 @@ #include "desc_constr.h" #include "jr.h" #include "error.h" -#include "sg_link_tbl.h" +#include "sg_sw_sec4.h" #include "key_gen.h" /* @@ -658,8 +658,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, * @dst_nents: number of segments in output scatterlist * @iv_dma: dma address of iv for checking continuity and link table * @desc: h/w descriptor (variable length; must not exceed MAX_CAAM_DESCSIZE) - * @link_tbl_bytes: length of dma mapped link_tbl space - * @link_tbl_dma: bus physical mapped address of h/w link table + * @sec4_sg_bytes: length of dma mapped sec4_sg space + * @sec4_sg_dma: bus physical mapped address of h/w link table * @hw_desc: the h/w job descriptor followed by any referenced link tables */ struct aead_edesc { @@ -667,9 +667,9 @@ struct aead_edesc { int src_nents; int dst_nents; dma_addr_t iv_dma; - int link_tbl_bytes; - dma_addr_t link_tbl_dma; - struct link_tbl_entry *link_tbl; + int sec4_sg_bytes; + dma_addr_t sec4_sg_dma; + struct sec4_sg_entry *sec4_sg; u32 hw_desc[0]; }; @@ -679,24 +679,24 @@ struct aead_edesc { * @dst_nents: number of segments in output scatterlist * @iv_dma: dma address of iv for checking continuity and link table * @desc: h/w descriptor (variable length; must not exceed MAX_CAAM_DESCSIZE) - * @link_tbl_bytes: length of dma mapped link_tbl space - * @link_tbl_dma: bus physical mapped address of h/w link table + * @sec4_sg_bytes: length of dma mapped sec4_sg space + * @sec4_sg_dma: bus physical mapped address of h/w link table * @hw_desc: the h/w job descriptor followed by any referenced link tables */ struct ablkcipher_edesc { int src_nents; int dst_nents; dma_addr_t iv_dma; - int link_tbl_bytes; - dma_addr_t link_tbl_dma; - struct link_tbl_entry *link_tbl; + int sec4_sg_bytes; + dma_addr_t sec4_sg_dma; + struct sec4_sg_entry *sec4_sg; u32 hw_desc[0]; }; static void caam_unmap(struct device *dev, struct scatterlist *src, struct scatterlist *dst, int src_nents, int dst_nents, - dma_addr_t iv_dma, int ivsize, dma_addr_t link_tbl_dma, - int link_tbl_bytes) + dma_addr_t iv_dma, int ivsize, dma_addr_t sec4_sg_dma, + int sec4_sg_bytes) { if (unlikely(dst != src)) { dma_unmap_sg(dev, src, src_nents, DMA_TO_DEVICE); @@ -707,8 +707,8 @@ static void caam_unmap(struct device *dev, struct scatterlist *src, if (iv_dma) dma_unmap_single(dev, iv_dma, ivsize, DMA_TO_DEVICE); - if (link_tbl_bytes) - dma_unmap_single(dev, link_tbl_dma, link_tbl_bytes, + if (sec4_sg_bytes) + dma_unmap_single(dev, sec4_sg_dma, sec4_sg_bytes, DMA_TO_DEVICE); } @@ -723,8 +723,8 @@ static void aead_unmap(struct device *dev, caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents, - edesc->iv_dma, ivsize, edesc->link_tbl_dma, - edesc->link_tbl_bytes); + edesc->iv_dma, ivsize, edesc->sec4_sg_dma, + edesc->sec4_sg_bytes); } static void ablkcipher_unmap(struct device *dev, @@ -736,8 +736,8 @@ static void ablkcipher_unmap(struct device *dev, caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents, - edesc->iv_dma, ivsize, edesc->link_tbl_dma, - edesc->link_tbl_bytes); + edesc->iv_dma, ivsize, edesc->sec4_sg_dma, + edesc->sec4_sg_bytes); } static void aead_encrypt_done(struct device *jrdev, u32 *desc, u32 err, @@ -828,7 +828,7 @@ static void aead_decrypt_done(struct device *jrdev, u32 *desc, u32 err, sizeof(struct iphdr) + req->assoclen + ((req->cryptlen > 1500) ? 1500 : req->cryptlen) + ctx->authsize + 36, 1); - if (!err && edesc->link_tbl_bytes) { + if (!err && edesc->sec4_sg_bytes) { struct scatterlist *sg = sg_last(req->src, edesc->src_nents); print_hex_dump(KERN_ERR, "sglastout@"xstr(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(sg), @@ -927,7 +927,7 @@ static void init_aead_job(u32 *sh_desc, dma_addr_t ptr, u32 *desc = edesc->hw_desc; u32 out_options = 0, in_options; dma_addr_t dst_dma, src_dma; - int len, link_tbl_index = 0; + int len, sec4_sg_index = 0; #ifdef DEBUG debug("assoclen %d cryptlen %d authsize %d\n", @@ -953,9 +953,9 @@ static void init_aead_job(u32 *sh_desc, dma_addr_t ptr, src_dma = sg_dma_address(req->assoc); in_options = 0; } else { - src_dma = edesc->link_tbl_dma; - link_tbl_index += (edesc->assoc_nents ? : 1) + 1 + - (edesc->src_nents ? : 1); + src_dma = edesc->sec4_sg_dma; + sec4_sg_index += (edesc->assoc_nents ? : 1) + 1 + + (edesc->src_nents ? : 1); in_options = LDST_SGF; } if (encrypt) @@ -969,7 +969,7 @@ static void init_aead_job(u32 *sh_desc, dma_addr_t ptr, if (all_contig) { dst_dma = sg_dma_address(req->src); } else { - dst_dma = src_dma + sizeof(struct link_tbl_entry) * + dst_dma = src_dma + sizeof(struct sec4_sg_entry) * ((edesc->assoc_nents ? : 1) + 1); out_options = LDST_SGF; } @@ -977,9 +977,9 @@ static void init_aead_job(u32 *sh_desc, dma_addr_t ptr, if (!edesc->dst_nents) { dst_dma = sg_dma_address(req->dst); } else { - dst_dma = edesc->link_tbl_dma + - link_tbl_index * - sizeof(struct link_tbl_entry); + dst_dma = edesc->sec4_sg_dma + + sec4_sg_index * + sizeof(struct sec4_sg_entry); out_options = LDST_SGF; } } @@ -1005,7 +1005,7 @@ static void init_aead_giv_job(u32 *sh_desc, dma_addr_t ptr, u32 *desc = edesc->hw_desc; u32 out_options = 0, in_options; dma_addr_t dst_dma, src_dma; - int len, link_tbl_index = 0; + int len, sec4_sg_index = 0; #ifdef DEBUG debug("assoclen %d cryptlen %d authsize %d\n", @@ -1030,8 +1030,8 @@ static void init_aead_giv_job(u32 *sh_desc, dma_addr_t ptr, src_dma = sg_dma_address(req->assoc); in_options = 0; } else { - src_dma = edesc->link_tbl_dma; - link_tbl_index += edesc->assoc_nents + 1 + edesc->src_nents; + src_dma = edesc->sec4_sg_dma; + sec4_sg_index += edesc->assoc_nents + 1 + edesc->src_nents; in_options = LDST_SGF; } append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize + @@ -1041,13 +1041,13 @@ static void init_aead_giv_job(u32 *sh_desc, dma_addr_t ptr, dst_dma = edesc->iv_dma; } else { if (likely(req->src == req->dst)) { - dst_dma = src_dma + sizeof(struct link_tbl_entry) * + dst_dma = src_dma + sizeof(struct sec4_sg_entry) * edesc->assoc_nents; out_options = LDST_SGF; } else { - dst_dma = edesc->link_tbl_dma + - link_tbl_index * - sizeof(struct link_tbl_entry); + dst_dma = edesc->sec4_sg_dma + + sec4_sg_index * + sizeof(struct sec4_sg_entry); out_options = LDST_SGF; } } @@ -1068,7 +1068,7 @@ static void init_ablkcipher_job(u32 *sh_desc, dma_addr_t ptr, u32 *desc = edesc->hw_desc; u32 out_options = 0, in_options; dma_addr_t dst_dma, src_dma; - int len, link_tbl_index = 0; + int len, sec4_sg_index = 0; #ifdef DEBUG print_hex_dump(KERN_ERR, "presciv@"xstr(__LINE__)": ", @@ -1086,8 +1086,8 @@ static void init_ablkcipher_job(u32 *sh_desc, dma_addr_t ptr, src_dma = edesc->iv_dma; in_options = 0; } else { - src_dma = edesc->link_tbl_dma; - link_tbl_index += (iv_contig ? 0 : 1) + edesc->src_nents; + src_dma = edesc->sec4_sg_dma; + sec4_sg_index += (iv_contig ? 0 : 1) + edesc->src_nents; in_options = LDST_SGF; } append_seq_in_ptr(desc, src_dma, req->nbytes + ivsize, in_options); @@ -1096,16 +1096,16 @@ static void init_ablkcipher_job(u32 *sh_desc, dma_addr_t ptr, if (!edesc->src_nents && iv_contig) { dst_dma = sg_dma_address(req->src); } else { - dst_dma = edesc->link_tbl_dma + - sizeof(struct link_tbl_entry); + dst_dma = edesc->sec4_sg_dma + + sizeof(struct sec4_sg_entry); out_options = LDST_SGF; } } else { if (!edesc->dst_nents) { dst_dma = sg_dma_address(req->dst); } else { - dst_dma = edesc->link_tbl_dma + - link_tbl_index * sizeof(struct link_tbl_entry); + dst_dma = edesc->sec4_sg_dma + + sec4_sg_index * sizeof(struct sec4_sg_entry); out_options = LDST_SGF; } } @@ -1129,7 +1129,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, int sgc; bool all_contig = true; int ivsize = crypto_aead_ivsize(aead); - int link_tbl_index, link_tbl_len = 0, link_tbl_bytes; + int sec4_sg_index, sec4_sg_len = 0, sec4_sg_bytes; assoc_nents = sg_count(req->assoc, req->assoclen); src_nents = sg_count(req->src, req->cryptlen); @@ -1157,15 +1157,15 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, all_contig = false; assoc_nents = assoc_nents ? : 1; src_nents = src_nents ? : 1; - link_tbl_len = assoc_nents + 1 + src_nents; + sec4_sg_len = assoc_nents + 1 + src_nents; } - link_tbl_len += dst_nents; + sec4_sg_len += dst_nents; - link_tbl_bytes = link_tbl_len * sizeof(struct link_tbl_entry); + sec4_sg_bytes = sec4_sg_len * sizeof(struct sec4_sg_entry); /* allocate space for base edesc and hw desc commands, link tables */ edesc = kmalloc(sizeof(struct aead_edesc) + desc_bytes + - link_tbl_bytes, GFP_DMA | flags); + sec4_sg_bytes, GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return ERR_PTR(-ENOMEM); @@ -1175,32 +1175,32 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, edesc->src_nents = src_nents; edesc->dst_nents = dst_nents; edesc->iv_dma = iv_dma; - edesc->link_tbl_bytes = link_tbl_bytes; - edesc->link_tbl = (void *)edesc + sizeof(struct aead_edesc) + - desc_bytes; - edesc->link_tbl_dma = dma_map_single(jrdev, edesc->link_tbl, - link_tbl_bytes, DMA_TO_DEVICE); + edesc->sec4_sg_bytes = sec4_sg_bytes; + edesc->sec4_sg = (void *)edesc + sizeof(struct aead_edesc) + + desc_bytes; + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); *all_contig_ptr = all_contig; - link_tbl_index = 0; + sec4_sg_index = 0; if (!all_contig) { - sg_to_link_tbl(req->assoc, - (assoc_nents ? : 1), - edesc->link_tbl + - link_tbl_index, 0); - link_tbl_index += assoc_nents ? : 1; - sg_to_link_tbl_one(edesc->link_tbl + link_tbl_index, + sg_to_sec4_sg(req->assoc, + (assoc_nents ? : 1), + edesc->sec4_sg + + sec4_sg_index, 0); + sec4_sg_index += assoc_nents ? : 1; + dma_to_sec4_sg_one(edesc->sec4_sg + sec4_sg_index, iv_dma, ivsize, 0); - link_tbl_index += 1; - sg_to_link_tbl_last(req->src, - (src_nents ? : 1), - edesc->link_tbl + - link_tbl_index, 0); - link_tbl_index += src_nents ? : 1; + sec4_sg_index += 1; + sg_to_sec4_sg_last(req->src, + (src_nents ? : 1), + edesc->sec4_sg + + sec4_sg_index, 0); + sec4_sg_index += src_nents ? : 1; } if (dst_nents) { - sg_to_link_tbl_last(req->dst, dst_nents, - edesc->link_tbl + link_tbl_index, 0); + sg_to_sec4_sg_last(req->dst, dst_nents, + edesc->sec4_sg + sec4_sg_index, 0); } return edesc; @@ -1307,7 +1307,7 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request int sgc; u32 contig = GIV_SRC_CONTIG | GIV_DST_CONTIG; int ivsize = crypto_aead_ivsize(aead); - int link_tbl_index, link_tbl_len = 0, link_tbl_bytes; + int sec4_sg_index, sec4_sg_len = 0, sec4_sg_bytes; assoc_nents = sg_count(req->assoc, req->assoclen); src_nents = sg_count(req->src, req->cryptlen); @@ -1336,22 +1336,22 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request contig &= ~GIV_DST_CONTIG; if (unlikely(req->src != req->dst)) { dst_nents = dst_nents ? : 1; - link_tbl_len += 1; + sec4_sg_len += 1; } if (!(contig & GIV_SRC_CONTIG)) { assoc_nents = assoc_nents ? : 1; src_nents = src_nents ? : 1; - link_tbl_len += assoc_nents + 1 + src_nents; + sec4_sg_len += assoc_nents + 1 + src_nents; if (likely(req->src == req->dst)) contig &= ~GIV_DST_CONTIG; } - link_tbl_len += dst_nents; + sec4_sg_len += dst_nents; - link_tbl_bytes = link_tbl_len * sizeof(struct link_tbl_entry); + sec4_sg_bytes = sec4_sg_len * sizeof(struct sec4_sg_entry); /* allocate space for base edesc and hw desc commands, link tables */ edesc = kmalloc(sizeof(struct aead_edesc) + desc_bytes + - link_tbl_bytes, GFP_DMA | flags); + sec4_sg_bytes, GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return ERR_PTR(-ENOMEM); @@ -1361,33 +1361,33 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request edesc->src_nents = src_nents; edesc->dst_nents = dst_nents; edesc->iv_dma = iv_dma; - edesc->link_tbl_bytes = link_tbl_bytes; - edesc->link_tbl = (void *)edesc + sizeof(struct aead_edesc) + - desc_bytes; - edesc->link_tbl_dma = dma_map_single(jrdev, edesc->link_tbl, - link_tbl_bytes, DMA_TO_DEVICE); + edesc->sec4_sg_bytes = sec4_sg_bytes; + edesc->sec4_sg = (void *)edesc + sizeof(struct aead_edesc) + + desc_bytes; + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); *contig_ptr = contig; - link_tbl_index = 0; + sec4_sg_index = 0; if (!(contig & GIV_SRC_CONTIG)) { - sg_to_link_tbl(req->assoc, assoc_nents, - edesc->link_tbl + - link_tbl_index, 0); - link_tbl_index += assoc_nents; - sg_to_link_tbl_one(edesc->link_tbl + link_tbl_index, + sg_to_sec4_sg(req->assoc, assoc_nents, + edesc->sec4_sg + + sec4_sg_index, 0); + sec4_sg_index += assoc_nents; + dma_to_sec4_sg_one(edesc->sec4_sg + sec4_sg_index, iv_dma, ivsize, 0); - link_tbl_index += 1; - sg_to_link_tbl_last(req->src, src_nents, - edesc->link_tbl + - link_tbl_index, 0); - link_tbl_index += src_nents; + sec4_sg_index += 1; + sg_to_sec4_sg_last(req->src, src_nents, + edesc->sec4_sg + + sec4_sg_index, 0); + sec4_sg_index += src_nents; } if (unlikely(req->src != req->dst && !(contig & GIV_DST_CONTIG))) { - sg_to_link_tbl_one(edesc->link_tbl + link_tbl_index, + dma_to_sec4_sg_one(edesc->sec4_sg + sec4_sg_index, iv_dma, ivsize, 0); - link_tbl_index += 1; - sg_to_link_tbl_last(req->dst, dst_nents, - edesc->link_tbl + link_tbl_index, 0); + sec4_sg_index += 1; + sg_to_sec4_sg_last(req->dst, dst_nents, + edesc->sec4_sg + sec4_sg_index, 0); } return edesc; @@ -1453,13 +1453,13 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; - int src_nents, dst_nents = 0, link_tbl_bytes; + int src_nents, dst_nents = 0, sec4_sg_bytes; struct ablkcipher_edesc *edesc; dma_addr_t iv_dma = 0; bool iv_contig = false; int sgc; int ivsize = crypto_ablkcipher_ivsize(ablkcipher); - int link_tbl_index; + int sec4_sg_index; src_nents = sg_count(req->src, req->nbytes); @@ -1485,12 +1485,12 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request iv_contig = true; else src_nents = src_nents ? : 1; - link_tbl_bytes = ((iv_contig ? 0 : 1) + src_nents + dst_nents) * - sizeof(struct link_tbl_entry); + sec4_sg_bytes = ((iv_contig ? 0 : 1) + src_nents + dst_nents) * + sizeof(struct sec4_sg_entry); /* allocate space for base edesc and hw desc commands, link tables */ edesc = kmalloc(sizeof(struct ablkcipher_edesc) + desc_bytes + - link_tbl_bytes, GFP_DMA | flags); + sec4_sg_bytes, GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return ERR_PTR(-ENOMEM); @@ -1498,31 +1498,31 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request edesc->src_nents = src_nents; edesc->dst_nents = dst_nents; - edesc->link_tbl_bytes = link_tbl_bytes; - edesc->link_tbl = (void *)edesc + sizeof(struct ablkcipher_edesc) + - desc_bytes; + edesc->sec4_sg_bytes = sec4_sg_bytes; + edesc->sec4_sg = (void *)edesc + sizeof(struct ablkcipher_edesc) + + desc_bytes; - link_tbl_index = 0; + sec4_sg_index = 0; if (!iv_contig) { - sg_to_link_tbl_one(edesc->link_tbl, iv_dma, ivsize, 0); - sg_to_link_tbl_last(req->src, src_nents, - edesc->link_tbl + 1, 0); - link_tbl_index += 1 + src_nents; + dma_to_sec4_sg_one(edesc->sec4_sg, iv_dma, ivsize, 0); + sg_to_sec4_sg_last(req->src, src_nents, + edesc->sec4_sg + 1, 0); + sec4_sg_index += 1 + src_nents; } if (unlikely(dst_nents)) { - sg_to_link_tbl_last(req->dst, dst_nents, - edesc->link_tbl + link_tbl_index, 0); + sg_to_sec4_sg_last(req->dst, dst_nents, + edesc->sec4_sg + sec4_sg_index, 0); } - edesc->link_tbl_dma = dma_map_single(jrdev, edesc->link_tbl, - link_tbl_bytes, DMA_TO_DEVICE); + edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg, + sec4_sg_bytes, DMA_TO_DEVICE); edesc->iv_dma = iv_dma; #ifdef DEBUG - print_hex_dump(KERN_ERR, "ablkcipher link_tbl@"xstr(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, edesc->link_tbl, - link_tbl_bytes, 1); + print_hex_dump(KERN_ERR, "ablkcipher sec4_sg@"xstr(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, edesc->sec4_sg, + sec4_sg_bytes, 1); #endif *iv_contig_out = iv_contig; diff --git a/drivers/crypto/caam/desc.h b/drivers/crypto/caam/desc.h index 48c1927..3e68506 100644 --- a/drivers/crypto/caam/desc.h +++ b/drivers/crypto/caam/desc.h @@ -8,10 +8,10 @@ #ifndef DESC_H #define DESC_H -struct link_tbl_entry { +struct sec4_sg_entry { u64 ptr; -#define LINK_TBL_LEN_FIN 0x40000000 -#define LINK_TBL_LEN_EXT 0x80000000 +#define SEC4_SG_LEN_FIN 0x40000000 +#define SEC4_SG_LEN_EXT 0x80000000 u32 len; u8 reserved; u8 buf_pool_id; diff --git a/drivers/crypto/caam/sg_link_tbl.h b/drivers/crypto/caam/sg_link_tbl.h deleted file mode 100644 index 6df4349..0000000 --- a/drivers/crypto/caam/sg_link_tbl.h +++ /dev/null @@ -1,84 +0,0 @@ -/* - * CAAM/SEC 4.x functions for using scatterlists in caam driver - * - * Copyright 2008-2011 Freescale Semiconductor, Inc. - * - */ - -struct link_tbl_entry; - -/* - * convert single dma address to h/w link table format - */ -static inline void sg_to_link_tbl_one(struct link_tbl_entry *link_tbl_ptr, - dma_addr_t dma, u32 len, u32 offset) -{ - link_tbl_ptr->ptr = dma; - link_tbl_ptr->len = len; - link_tbl_ptr->reserved = 0; - link_tbl_ptr->buf_pool_id = 0; - link_tbl_ptr->offset = offset; -#ifdef DEBUG - print_hex_dump(KERN_ERR, "link_tbl_ptr@: ", - DUMP_PREFIX_ADDRESS, 16, 4, link_tbl_ptr, - sizeof(struct link_tbl_entry), 1); -#endif -} - -/* - * convert scatterlist to h/w link table format - * but does not have final bit; instead, returns last entry - */ -static inline struct link_tbl_entry * -sg_to_link_tbl(struct scatterlist *sg, int sg_count, - struct link_tbl_entry *link_tbl_ptr, u32 offset) -{ - while (sg_count) { - sg_to_link_tbl_one(link_tbl_ptr, sg_dma_address(sg), - sg_dma_len(sg), offset); - link_tbl_ptr++; - sg = sg_next(sg); - sg_count--; - } - return link_tbl_ptr - 1; -} - -/* - * convert scatterlist to h/w link table format - * scatterlist must have been previously dma mapped - */ -static inline void sg_to_link_tbl_last(struct scatterlist *sg, int sg_count, - struct link_tbl_entry *link_tbl_ptr, - u32 offset) -{ - link_tbl_ptr = sg_to_link_tbl(sg, sg_count, link_tbl_ptr, offset); - link_tbl_ptr->len |= LINK_TBL_LEN_FIN; -} - -/* count number of elements in scatterlist */ -static inline int __sg_count(struct scatterlist *sg_list, int nbytes) -{ - struct scatterlist *sg = sg_list; - int sg_nents = 0; - - while (nbytes > 0) { - sg_nents++; - nbytes -= sg->length; - if (!sg_is_last(sg) && (sg + 1)->length == 0) - BUG(); /* Not support chaining */ - sg = scatterwalk_sg_next(sg); - } - - return sg_nents; -} - -/* derive number of elements in scatterlist, but return 0 for 1 */ -static inline int sg_count(struct scatterlist *sg_list, int nbytes) -{ - int sg_nents = __sg_count(sg_list, nbytes); - - if (likely(sg_nents == 1)) - return 0; - - return sg_nents; -} diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h new file mode 100644 index 0000000..a6ad7a4 --- /dev/null +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -0,0 +1,84 @@ +/* + * CAAM/SEC 4.x functions for using scatterlists in caam driver + * + * Copyright 2008-2011 Freescale Semiconductor, Inc. + * + */ + +struct sec4_sg_entry; + +/* + * convert single dma address to h/w link table format + */ +static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, + dma_addr_t dma, u32 len, u32 offset) +{ + sec4_sg_ptr->ptr = dma; + sec4_sg_ptr->len = len; + sec4_sg_ptr->reserved = 0; + sec4_sg_ptr->buf_pool_id = 0; + sec4_sg_ptr->offset = offset; +#ifdef DEBUG + print_hex_dump(KERN_ERR, "sec4_sg_ptr@: ", + DUMP_PREFIX_ADDRESS, 16, 4, sec4_sg_ptr, + sizeof(struct sec4_sg_entry), 1); +#endif +} + +/* + * convert scatterlist to h/w link table format + * but does not have final bit; instead, returns last entry + */ +static inline struct sec4_sg_entry * +sg_to_sec4_sg(struct scatterlist *sg, int sg_count, + struct sec4_sg_entry *sec4_sg_ptr, u32 offset) +{ + while (sg_count) { + dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), + sg_dma_len(sg), offset); + sec4_sg_ptr++; + sg = sg_next(sg); + sg_count--; + } + return sec4_sg_ptr - 1; +} + +/* + * convert scatterlist to h/w link table format + * scatterlist must have been previously dma mapped + */ +static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int sg_count, + struct sec4_sg_entry *sec4_sg_ptr, + u32 offset) +{ + sec4_sg_ptr = sg_to_sec4_sg(sg, sg_count, sec4_sg_ptr, offset); + sec4_sg_ptr->len |= SEC4_SG_LEN_FIN; +} + +/* count number of elements in scatterlist */ +static inline int __sg_count(struct scatterlist *sg_list, int nbytes) +{ + struct scatterlist *sg = sg_list; + int sg_nents = 0; + + while (nbytes > 0) { + sg_nents++; + nbytes -= sg->length; + if (!sg_is_last(sg) && (sg + 1)->length == 0) + BUG(); /* Not support chaining */ + sg = scatterwalk_sg_next(sg); + } + + return sg_nents; +} + +/* derive number of elements in scatterlist, but return 0 for 1 */ +static inline int sg_count(struct scatterlist *sg_list, int nbytes) +{ + int sg_nents = __sg_count(sg_list, nbytes); + + if (likely(sg_nents == 1)) + return 0; + + return sg_nents; +} -- cgit v0.10.2