[PATCH 3/7] crypto: caam - add job ring accessors from Linux

[Ahmad Fatoum]

Job ring entries differ in size depending on caam_ptr_sz. Fortunately,
an entry is at most two elements big, so we can just provide accessors.

Import them from Linux.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 drivers/crypto/caam/regs.h | 60 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index 5c4b783e80fe..76ccb3006a2c 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -221,6 +221,66 @@ struct jr_outentry {
 	u32 jrstatus;	/* Status for completed descriptor */
 } __packed;
 
+static inline void jr_outentry_get(void *outring, int hw_idx, dma_addr_t *desc,
+				   u32 *jrstatus)
+{
+
+	if (caam_ptr_sz == sizeof(u32)) {
+		struct {
+			u32 desc;
+			u32 jrstatus;
+		} __packed *outentry = outring;
+
+		*desc = outentry[hw_idx].desc;
+		*jrstatus = outentry[hw_idx].jrstatus;
+	} else {
+		struct {
+			dma_addr_t desc;/* Pointer to completed descriptor */
+			u32 jrstatus;	/* Status for completed descriptor */
+		} __packed *outentry = outring;
+
+		*desc = outentry[hw_idx].desc;
+		*jrstatus = outentry[hw_idx].jrstatus;
+	}
+}
+
+#define SIZEOF_JR_OUTENTRY	(caam_ptr_sz + sizeof(u32))
+
+static inline dma_addr_t jr_outentry_desc(void *outring, int hw_idx)
+{
+	dma_addr_t desc;
+	u32 unused;
+
+	jr_outentry_get(outring, hw_idx, &desc, &unused);
+
+	return desc;
+}
+
+static inline u32 jr_outentry_jrstatus(void *outring, int hw_idx)
+{
+	dma_addr_t unused;
+	u32 jrstatus;
+
+	jr_outentry_get(outring, hw_idx, &unused, &jrstatus);
+
+	return jrstatus;
+}
+
+static inline void jr_inpentry_set(void *inpring, int hw_idx, dma_addr_t val)
+{
+	if (caam_ptr_sz == sizeof(u32)) {
+		u32 *inpentry = inpring;
+
+		inpentry[hw_idx] = val;
+	} else {
+		dma_addr_t *inpentry = inpring;
+
+		inpentry[hw_idx] = val;
+	}
+}
+
+#define SIZEOF_JR_INPENTRY	caam_ptr_sz
+
 /*
  * CHA version ID / instantiation bitfields
  * Defined for use within cha_id in perfmon
-- 
2.30.2