layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 227 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/804-crypto-0003-crypto-caam-use-mapped_-src-dst-_nents-for-descripto.patch b/target/linux/layerscape/patches-5.4/804-crypto-0003-crypto-caam-use-mapped_-src-dst-_nents-for-descripto.patch
new file mode 100644
index 0000000000..4e1efc858b
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/804-crypto-0003-crypto-caam-use-mapped_-src-dst-_nents-for-descripto.patch
@@ -0,0 +1,227 @@
+From e640f4bcfa0088ff696bc5da6063a1ea8d782189 Mon Sep 17 00:00:00 2001
+From: Iuliana Prodan <iuliana.prodan@nxp.com>
+Date: Thu, 26 Sep 2019 15:26:29 +0300
+Subject: [PATCH] crypto: caam - use mapped_{src,dst}_nents for descriptor
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The mapped_{src,dst}_nents _returned_ from the dma_map_sg
+call (which could be less than src/dst_nents) have to be
+used to generate the job descriptors.
+
+Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
+Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+(cherry picked from commit eff9771d51529acf7f6f58a60b2923b98da28f0e)
+---
+ drivers/crypto/caam/caampkc.c | 72 +++++++++++++++++++++++--------------------
+ drivers/crypto/caam/caampkc.h |  8 +++--
+ 2 files changed, 45 insertions(+), 35 deletions(-)
+
+--- a/drivers/crypto/caam/caampkc.c
++++ b/drivers/crypto/caam/caampkc.c
+@@ -252,9 +252,9 @@ static struct rsa_edesc *rsa_edesc_alloc
+ 	gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
+ 		       GFP_KERNEL : GFP_ATOMIC;
+ 	int sg_flags = (flags == GFP_ATOMIC) ? SG_MITER_ATOMIC : 0;
+-	int sgc;
+ 	int sec4_sg_index, sec4_sg_len = 0, sec4_sg_bytes;
+ 	int src_nents, dst_nents;
++	int mapped_src_nents, mapped_dst_nents;
+ 	unsigned int diff_size = 0;
+ 	int lzeros;
+ 
+@@ -285,13 +285,27 @@ static struct rsa_edesc *rsa_edesc_alloc
+ 				     req_ctx->fixup_src_len);
+ 	dst_nents = sg_nents_for_len(req->dst, req->dst_len);
+ 
+-	if (!diff_size && src_nents == 1)
++	mapped_src_nents = dma_map_sg(dev, req_ctx->fixup_src, src_nents,
++				      DMA_TO_DEVICE);
++	if (unlikely(!mapped_src_nents)) {
++		dev_err(dev, "unable to map source\n");
++		return ERR_PTR(-ENOMEM);
++	}
++	mapped_dst_nents = dma_map_sg(dev, req->dst, dst_nents,
++				      DMA_FROM_DEVICE);
++	if (unlikely(!mapped_dst_nents)) {
++		dev_err(dev, "unable to map destination\n");
++		goto src_fail;
++	}
++
++	if (!diff_size && mapped_src_nents == 1)
+ 		sec4_sg_len = 0; /* no need for an input hw s/g table */
+ 	else
+-		sec4_sg_len = src_nents + !!diff_size;
++		sec4_sg_len = mapped_src_nents + !!diff_size;
+ 	sec4_sg_index = sec4_sg_len;
+-	if (dst_nents > 1)
+-		sec4_sg_len += pad_sg_nents(dst_nents);
++
++	if (mapped_dst_nents > 1)
++		sec4_sg_len += pad_sg_nents(mapped_dst_nents);
+ 	else
+ 		sec4_sg_len = pad_sg_nents(sec4_sg_len);
+ 
+@@ -301,19 +315,7 @@ static struct rsa_edesc *rsa_edesc_alloc
+ 	edesc = kzalloc(sizeof(*edesc) + desclen + sec4_sg_bytes,
+ 			GFP_DMA | flags);
+ 	if (!edesc)
+-		return ERR_PTR(-ENOMEM);
+-
+-	sgc = dma_map_sg(dev, req_ctx->fixup_src, src_nents, DMA_TO_DEVICE);
+-	if (unlikely(!sgc)) {
+-		dev_err(dev, "unable to map source\n");
+-		goto src_fail;
+-	}
+-
+-	sgc = dma_map_sg(dev, req->dst, dst_nents, DMA_FROM_DEVICE);
+-	if (unlikely(!sgc)) {
+-		dev_err(dev, "unable to map destination\n");
+ 		goto dst_fail;
+-	}
+ 
+ 	edesc->sec4_sg = (void *)edesc + sizeof(*edesc) + desclen;
+ 	if (diff_size)
+@@ -324,7 +326,7 @@ static struct rsa_edesc *rsa_edesc_alloc
+ 		sg_to_sec4_sg_last(req_ctx->fixup_src, req_ctx->fixup_src_len,
+ 				   edesc->sec4_sg + !!diff_size, 0);
+ 
+-	if (dst_nents > 1)
++	if (mapped_dst_nents > 1)
+ 		sg_to_sec4_sg_last(req->dst, req->dst_len,
+ 				   edesc->sec4_sg + sec4_sg_index, 0);
+ 
+@@ -335,6 +337,9 @@ static struct rsa_edesc *rsa_edesc_alloc
+ 	if (!sec4_sg_bytes)
+ 		return edesc;
+ 
++	edesc->mapped_src_nents = mapped_src_nents;
++	edesc->mapped_dst_nents = mapped_dst_nents;
++
+ 	edesc->sec4_sg_dma = dma_map_single(dev, edesc->sec4_sg,
+ 					    sec4_sg_bytes, DMA_TO_DEVICE);
+ 	if (dma_mapping_error(dev, edesc->sec4_sg_dma)) {
+@@ -351,11 +356,11 @@ static struct rsa_edesc *rsa_edesc_alloc
+ 	return edesc;
+ 
+ sec4_sg_fail:
+-	dma_unmap_sg(dev, req->dst, dst_nents, DMA_FROM_DEVICE);
++	kfree(edesc);
+ dst_fail:
+-	dma_unmap_sg(dev, req_ctx->fixup_src, src_nents, DMA_TO_DEVICE);
++	dma_unmap_sg(dev, req->dst, dst_nents, DMA_FROM_DEVICE);
+ src_fail:
+-	kfree(edesc);
++	dma_unmap_sg(dev, req_ctx->fixup_src, src_nents, DMA_TO_DEVICE);
+ 	return ERR_PTR(-ENOMEM);
+ }
+ 
+@@ -383,15 +388,15 @@ static int set_rsa_pub_pdb(struct akciph
+ 		return -ENOMEM;
+ 	}
+ 
+-	if (edesc->src_nents > 1) {
++	if (edesc->mapped_src_nents > 1) {
+ 		pdb->sgf |= RSA_PDB_SGF_F;
+ 		pdb->f_dma = edesc->sec4_sg_dma;
+-		sec4_sg_index += edesc->src_nents;
++		sec4_sg_index += edesc->mapped_src_nents;
+ 	} else {
+ 		pdb->f_dma = sg_dma_address(req_ctx->fixup_src);
+ 	}
+ 
+-	if (edesc->dst_nents > 1) {
++	if (edesc->mapped_dst_nents > 1) {
+ 		pdb->sgf |= RSA_PDB_SGF_G;
+ 		pdb->g_dma = edesc->sec4_sg_dma +
+ 			     sec4_sg_index * sizeof(struct sec4_sg_entry);
+@@ -428,17 +433,18 @@ static int set_rsa_priv_f1_pdb(struct ak
+ 		return -ENOMEM;
+ 	}
+ 
+-	if (edesc->src_nents > 1) {
++	if (edesc->mapped_src_nents > 1) {
+ 		pdb->sgf |= RSA_PRIV_PDB_SGF_G;
+ 		pdb->g_dma = edesc->sec4_sg_dma;
+-		sec4_sg_index += edesc->src_nents;
++		sec4_sg_index += edesc->mapped_src_nents;
++
+ 	} else {
+ 		struct caam_rsa_req_ctx *req_ctx = akcipher_request_ctx(req);
+ 
+ 		pdb->g_dma = sg_dma_address(req_ctx->fixup_src);
+ 	}
+ 
+-	if (edesc->dst_nents > 1) {
++	if (edesc->mapped_dst_nents > 1) {
+ 		pdb->sgf |= RSA_PRIV_PDB_SGF_F;
+ 		pdb->f_dma = edesc->sec4_sg_dma +
+ 			     sec4_sg_index * sizeof(struct sec4_sg_entry);
+@@ -493,17 +499,17 @@ static int set_rsa_priv_f2_pdb(struct ak
+ 		goto unmap_tmp1;
+ 	}
+ 
+-	if (edesc->src_nents > 1) {
++	if (edesc->mapped_src_nents > 1) {
+ 		pdb->sgf |= RSA_PRIV_PDB_SGF_G;
+ 		pdb->g_dma = edesc->sec4_sg_dma;
+-		sec4_sg_index += edesc->src_nents;
++		sec4_sg_index += edesc->mapped_src_nents;
+ 	} else {
+ 		struct caam_rsa_req_ctx *req_ctx = akcipher_request_ctx(req);
+ 
+ 		pdb->g_dma = sg_dma_address(req_ctx->fixup_src);
+ 	}
+ 
+-	if (edesc->dst_nents > 1) {
++	if (edesc->mapped_dst_nents > 1) {
+ 		pdb->sgf |= RSA_PRIV_PDB_SGF_F;
+ 		pdb->f_dma = edesc->sec4_sg_dma +
+ 			     sec4_sg_index * sizeof(struct sec4_sg_entry);
+@@ -582,17 +588,17 @@ static int set_rsa_priv_f3_pdb(struct ak
+ 		goto unmap_tmp1;
+ 	}
+ 
+-	if (edesc->src_nents > 1) {
++	if (edesc->mapped_src_nents > 1) {
+ 		pdb->sgf |= RSA_PRIV_PDB_SGF_G;
+ 		pdb->g_dma = edesc->sec4_sg_dma;
+-		sec4_sg_index += edesc->src_nents;
++		sec4_sg_index += edesc->mapped_src_nents;
+ 	} else {
+ 		struct caam_rsa_req_ctx *req_ctx = akcipher_request_ctx(req);
+ 
+ 		pdb->g_dma = sg_dma_address(req_ctx->fixup_src);
+ 	}
+ 
+-	if (edesc->dst_nents > 1) {
++	if (edesc->mapped_dst_nents > 1) {
+ 		pdb->sgf |= RSA_PRIV_PDB_SGF_F;
+ 		pdb->f_dma = edesc->sec4_sg_dma +
+ 			     sec4_sg_index * sizeof(struct sec4_sg_entry);
+--- a/drivers/crypto/caam/caampkc.h
++++ b/drivers/crypto/caam/caampkc.h
+@@ -112,8 +112,10 @@ struct caam_rsa_req_ctx {
+ 
+ /**
+  * rsa_edesc - s/w-extended rsa descriptor
+- * @src_nents     : number of segments in input scatterlist
+- * @dst_nents     : number of segments in output scatterlist
++ * @src_nents     : number of segments in input s/w scatterlist
++ * @dst_nents     : number of segments in output s/w scatterlist
++ * @mapped_src_nents: number of segments in input h/w link table
++ * @mapped_dst_nents: number of segments in output h/w link table
+  * @sec4_sg_bytes : length of h/w link table
+  * @sec4_sg_dma   : dma address of h/w link table
+  * @sec4_sg       : pointer to h/w link table
+@@ -123,6 +125,8 @@ struct caam_rsa_req_ctx {
+ struct rsa_edesc {
+ 	int src_nents;
+ 	int dst_nents;
++	int mapped_src_nents;
++	int mapped_dst_nents;
+ 	int sec4_sg_bytes;
+ 	dma_addr_t sec4_sg_dma;
+ 	struct sec4_sg_entry *sec4_sg;