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Subject[PATCH v4 13/16] crypto: caam - don't hardcode inpentry size
Date
Using dma_addr_t for elements of JobR input ring is not appropriate on
all 64-bit SoCs, some of which, like i.MX8MQ, use only 32-bit wide
pointers there. Convert all of the code to use explicit helper
function that can be later extended to support i.MX8MQ. No functional
change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Spencer <christopher.spencer@sea.co.uk>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Aymen Sghaier <aymen.sghaier@nxp.com>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
drivers/crypto/caam/intern.h | 3 ++-
drivers/crypto/caam/jr.c | 4 ++--
drivers/crypto/caam/regs.h | 9 +++++++++
3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h
index 081805c0f88b..c00c7c84ec84 100644
--- a/drivers/crypto/caam/intern.h
+++ b/drivers/crypto/caam/intern.h
@@ -55,7 +55,8 @@ struct caam_drv_private_jr {
spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */
u32 inpring_avail; /* Number of free entries in input ring */
int head; /* entinfo (s/w ring) head index */
- dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */
+ void *inpring; /* Base of input ring, alloc
+ * DMA-safe */
int out_ring_read_index; /* Output index "tail" */
int tail; /* entinfo (s/w ring) tail index */
void *outring; /* Base of output ring, DMA-safe */
diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c
index 88777cc8adcd..fd20eee8169a 100644
--- a/drivers/crypto/caam/jr.c
+++ b/drivers/crypto/caam/jr.c
@@ -391,7 +391,7 @@ int caam_jr_enqueue(struct device *dev, u32 *desc,
head_entry->cbkarg = areq;
head_entry->desc_addr_dma = desc_dma;

- jrp->inpring[head] = cpu_to_caam_dma(desc_dma);
+ jr_inpentry_set(jrp->inpring, head, cpu_to_caam_dma(desc_dma));

/*
* Guarantee that the descriptor's DMA address has been written to
@@ -447,7 +447,7 @@ static int caam_jr_init(struct device *dev)
goto out_free_irq;

error = -ENOMEM;
- jrp->inpring = dmam_alloc_coherent(dev, sizeof(*jrp->inpring) *
+ jrp->inpring = dmam_alloc_coherent(dev, SIZEOF_JR_INPENTRY *
JOBR_DEPTH, &inpbusaddr,
GFP_KERNEL);
if (!jrp->inpring)
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index 0cc4a48dfc30..ec49f5ba9689 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -244,6 +244,15 @@ static inline u32 jr_outentry_jrstatus(void *outring, int hw_idx)
return jrstatus;
}

+static inline void jr_inpentry_set(void *inpring, int hw_idx, dma_addr_t val)
+{
+ dma_addr_t *inpentry = inpring;
+
+ inpentry[hw_idx] = val;
+}
+
+#define SIZEOF_JR_INPENTRY caam_ptr_sz
+

/* Version registers (Era 10+) e80-eff */
struct version_regs {
--
2.21.0
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