From: Radu Alexe <radu.alexe@xxxxxxx>
The caam_dma is a memcpy DMA driver based on the DMA functionality of
the CAAM hardware block. It creates a DMA channel for each JR of the
CAAM. This patch adds functionality that is used by the caam_dma that is
not yet part of the JR driver.
Signed-off-by: Radu Alexe <radu.alexe@xxxxxxx>
---
drivers/crypto/caam/desc.h | 3 +++
drivers/crypto/caam/jr.c | 42 ++++++++++++++++++++++++++++++++++++++++++
drivers/crypto/caam/jr.h | 2 ++
3 files changed, 47 insertions(+)
diff --git a/drivers/crypto/caam/desc.h b/drivers/crypto/caam/desc.h
index 2e6766a1573f..f03221d2468a 100644
--- a/drivers/crypto/caam/desc.h
+++ b/drivers/crypto/caam/desc.h
@@ -354,6 +354,7 @@
#define FIFOLD_TYPE_PK_N (0x08 << FIFOLD_TYPE_SHIFT)
#define FIFOLD_TYPE_PK_A (0x0c << FIFOLD_TYPE_SHIFT)
#define FIFOLD_TYPE_PK_B (0x0d << FIFOLD_TYPE_SHIFT)
+#define FIFOLD_TYPE_IFIFO (0x0f << FIFOLD_TYPE_SHIFT)
/* Other types. Need to OR in last/flush bits as desired */
#define FIFOLD_TYPE_MSG_MASK (0x38 << FIFOLD_TYPE_SHIFT)
@@ -407,6 +408,7 @@
#define FIFOST_TYPE_MESSAGE_DATA (0x30 << FIFOST_TYPE_SHIFT)
#define FIFOST_TYPE_RNGSTORE (0x34 << FIFOST_TYPE_SHIFT)
#define FIFOST_TYPE_RNGFIFO (0x35 << FIFOST_TYPE_SHIFT)
+#define FIFOST_TYPE_METADATA (0x3e << FIFOST_TYPE_SHIFT)
#define FIFOST_TYPE_SKIP (0x3f << FIFOST_TYPE_SHIFT)
/*
@@ -1443,6 +1445,7 @@
#define MATH_SRC1_INFIFO (0x0a << MATH_SRC1_SHIFT)
#define MATH_SRC1_OUTFIFO (0x0b << MATH_SRC1_SHIFT)
#define MATH_SRC1_ONE (0x0c << MATH_SRC1_SHIFT)
+#define MATH_SRC1_ZERO (0x0f << MATH_SRC1_SHIFT)
/* Destination selectors */
#define MATH_DEST_SHIFT 8
diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c
index d258953ff488..00e87094588d 100644
--- a/drivers/crypto/caam/jr.c
+++ b/drivers/crypto/caam/jr.c
@@ -23,6 +23,14 @@ struct jr_driver_data {
static struct jr_driver_data driver_data;
+static int jr_driver_probed;
+
+int caam_jr_driver_probed(void)
+{
+ return jr_driver_probed;
+}
+EXPORT_SYMBOL(caam_jr_driver_probed);
+
static int caam_reset_hw_jr(struct device *dev)
{
struct caam_drv_private_jr *jrp = dev_get_drvdata(dev);
@@ -119,6 +127,8 @@ static int caam_jr_remove(struct platform_device *pdev)
dev_err(jrdev, "Failed to shut down job ring\n");
irq_dispose_mapping(jrpriv->irq);
+ jr_driver_probed--;
+
return ret;
}
@@ -280,6 +290,36 @@ struct device *caam_jr_alloc(void)
}
EXPORT_SYMBOL(caam_jr_alloc);
+/**
+ * caam_jridx_alloc() - Alloc a specific job ring based on its index.
+ *
+ * returns : pointer to the newly allocated physical
+ * JobR dev can be written to if successful.
+ **/
+struct device *caam_jridx_alloc(int idx)
+{
+ struct caam_drv_private_jr *jrpriv;
+ struct device *dev = ERR_PTR(-ENODEV);
+
+ spin_lock(&driver_data.jr_alloc_lock);
+
+ if (list_empty(&driver_data.jr_list))
+ goto end;
+
+ list_for_each_entry(jrpriv, &driver_data.jr_list, list_node) {
+ if (jrpriv->ridx == idx) {
+ atomic_inc(&jrpriv->tfm_count);
+ dev = jrpriv->dev;
+ break;
+ }
+ }
+
+end:
+ spin_unlock(&driver_data.jr_alloc_lock);
+ return dev;
+}
+EXPORT_SYMBOL(caam_jridx_alloc);
+
/**
* caam_jr_free() - Free the Job Ring
* @rdev - points to the dev that identifies the Job ring to
@@ -538,6 +578,8 @@ static int caam_jr_probe(struct platform_device *pdev)
atomic_set(&jrpriv->tfm_count, 0);
+ jr_driver_probed++;
+
return 0;
}
diff --git a/drivers/crypto/caam/jr.h b/drivers/crypto/caam/jr.h
index 97113a6d6c58..ee4d31c9aeb8 100644
--- a/drivers/crypto/caam/jr.h
+++ b/drivers/crypto/caam/jr.h
@@ -8,7 +8,9 @@
#define JR_H
/* Prototypes for backend-level services exposed to APIs */
+int caam_jr_driver_probed(void);
struct device *caam_jr_alloc(void);
+struct device *caam_jridx_alloc(int idx);
void caam_jr_free(struct device *rdev);
int caam_jr_enqueue(struct device *dev, u32 *desc,
void (*cbk)(struct device *dev, u32 *desc, u32 status,
--
2.14.2.606.g7451fcd
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