+++ /dev/null
-From f0e2ce58f853634d7ad1a418a49bd5fbd556227c Mon Sep 17 00:00:00 2001
-From: raveendra padasalagi <raveendra.padasalagi@broadcom.com>
-Date: Tue, 29 Aug 2017 15:08:10 +0530
-Subject: crypto: brcm - Explicity ACK mailbox message
-
-From: raveendra padasalagi <raveendra.padasalagi@broadcom.com>
-
-commit f0e2ce58f853634d7ad1a418a49bd5fbd556227c upstream.
-
-Add support to explicity ACK mailbox message
-because after sending message we can know
-the send status via error attribute of brcm_message.
-
-This is needed to support "txdone_ack" supported in
-mailbox controller driver.
-
-Fixes: 9d12ba86f818 ("crypto: brcm - Add Broadcom SPU driver")
-Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
-Reviewed-by: Anup Patel <anup.patel@broadcom.com>
-Reviewed-by: Scott Branden <scott.branden@broadcom.com>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
----
- drivers/crypto/bcm/cipher.c | 101 ++++++++++++++++++++------------------------
- 1 file changed, 46 insertions(+), 55 deletions(-)
-
---- a/drivers/crypto/bcm/cipher.c
-+++ b/drivers/crypto/bcm/cipher.c
-@@ -258,6 +258,44 @@ spu_ablkcipher_tx_sg_create(struct brcm_
- return 0;
- }
-
-+static int mailbox_send_message(struct brcm_message *mssg, u32 flags,
-+ u8 chan_idx)
-+{
-+ int err;
-+ int retry_cnt = 0;
-+ struct device *dev = &(iproc_priv.pdev->dev);
-+
-+ err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg);
-+ if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) {
-+ while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {
-+ /*
-+ * Mailbox queue is full. Since MAY_SLEEP is set, assume
-+ * not in atomic context and we can wait and try again.
-+ */
-+ retry_cnt++;
-+ usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);
-+ err = mbox_send_message(iproc_priv.mbox[chan_idx],
-+ mssg);
-+ atomic_inc(&iproc_priv.mb_no_spc);
-+ }
-+ }
-+ if (err < 0) {
-+ atomic_inc(&iproc_priv.mb_send_fail);
-+ return err;
-+ }
-+
-+ /* Check error returned by mailbox controller */
-+ err = mssg->error;
-+ if (unlikely(err < 0)) {
-+ dev_err(dev, "message error %d", err);
-+ /* Signal txdone for mailbox channel */
-+ }
-+
-+ /* Signal txdone for mailbox channel */
-+ mbox_client_txdone(iproc_priv.mbox[chan_idx], err);
-+ return err;
-+}
-+
- /**
- * handle_ablkcipher_req() - Submit as much of a block cipher request as fits in
- * a single SPU request message, starting at the current position in the request
-@@ -295,7 +333,6 @@ static int handle_ablkcipher_req(struct
- u32 pad_len; /* total length of all padding */
- bool update_key = false;
- struct brcm_message *mssg; /* mailbox message */
-- int retry_cnt = 0;
-
- /* number of entries in src and dst sg in mailbox message. */
- u8 rx_frag_num = 2; /* response header and STATUS */
-@@ -464,24 +501,9 @@ static int handle_ablkcipher_req(struct
- if (err)
- return err;
-
-- err = mbox_send_message(iproc_priv.mbox[rctx->chan_idx], mssg);
-- if (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) {
-- while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {
-- /*
-- * Mailbox queue is full. Since MAY_SLEEP is set, assume
-- * not in atomic context and we can wait and try again.
-- */
-- retry_cnt++;
-- usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);
-- err = mbox_send_message(iproc_priv.mbox[rctx->chan_idx],
-- mssg);
-- atomic_inc(&iproc_priv.mb_no_spc);
-- }
-- }
-- if (unlikely(err < 0)) {
-- atomic_inc(&iproc_priv.mb_send_fail);
-+ err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
-+ if (unlikely(err < 0))
- return err;
-- }
-
- return -EINPROGRESS;
- }
-@@ -712,7 +734,6 @@ static int handle_ahash_req(struct iproc
- u32 spu_hdr_len;
- unsigned int digestsize;
- u16 rem = 0;
-- int retry_cnt = 0;
-
- /*
- * number of entries in src and dst sg. Always includes SPU msg header.
-@@ -906,24 +927,10 @@ static int handle_ahash_req(struct iproc
- if (err)
- return err;
-
-- err = mbox_send_message(iproc_priv.mbox[rctx->chan_idx], mssg);
-- if (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) {
-- while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {
-- /*
-- * Mailbox queue is full. Since MAY_SLEEP is set, assume
-- * not in atomic context and we can wait and try again.
-- */
-- retry_cnt++;
-- usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);
-- err = mbox_send_message(iproc_priv.mbox[rctx->chan_idx],
-- mssg);
-- atomic_inc(&iproc_priv.mb_no_spc);
-- }
-- }
-- if (err < 0) {
-- atomic_inc(&iproc_priv.mb_send_fail);
-+ err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
-+ if (unlikely(err < 0))
- return err;
-- }
-+
- return -EINPROGRESS;
- }
-
-@@ -1322,7 +1329,6 @@ static int handle_aead_req(struct iproc_
- int assoc_nents = 0;
- bool incl_icv = false;
- unsigned int digestsize = ctx->digestsize;
-- int retry_cnt = 0;
-
- /* number of entries in src and dst sg. Always includes SPU msg header.
- */
-@@ -1560,24 +1566,9 @@ static int handle_aead_req(struct iproc_
- if (err)
- return err;
-
-- err = mbox_send_message(iproc_priv.mbox[rctx->chan_idx], mssg);
-- if (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) {
-- while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {
-- /*
-- * Mailbox queue is full. Since MAY_SLEEP is set, assume
-- * not in atomic context and we can wait and try again.
-- */
-- retry_cnt++;
-- usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);
-- err = mbox_send_message(iproc_priv.mbox[rctx->chan_idx],
-- mssg);
-- atomic_inc(&iproc_priv.mb_no_spc);
-- }
-- }
-- if (err < 0) {
-- atomic_inc(&iproc_priv.mb_send_fail);
-+ err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
-+ if (unlikely(err < 0))
- return err;
-- }
-
- return -EINPROGRESS;
- }
-@@ -4534,7 +4525,7 @@ static int spu_mb_init(struct device *de
- mcl->dev = dev;
- mcl->tx_block = false;
- mcl->tx_tout = 0;
-- mcl->knows_txdone = false;
-+ mcl->knows_txdone = true;
- mcl->rx_callback = spu_rx_callback;
- mcl->tx_done = NULL;
-