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123 lines
3.5 KiB
Diff
123 lines
3.5 KiB
Diff
From 20f552cafd7dda6f5d25128bbc04ea2c91d9f5d1 Mon Sep 17 00:00:00 2001
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From: Radu Alexe <radu.alexe@nxp.com>
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Date: Thu, 26 Oct 2017 10:45:14 +0300
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Subject: [PATCH] crypto: caam - add functionality used by the caam_dma driver
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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The caam_dma is a memcpy DMA driver based on the DMA functionality of
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the CAAM hardware block. It creates a DMA channel for each JR of the
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CAAM. This patch adds functionality that is used by the caam_dma that is
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not yet part of the JR driver.
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Signed-off-by: Radu Alexe <radu.alexe@nxp.com>
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Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
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---
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drivers/crypto/caam/desc.h | 2 ++
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drivers/crypto/caam/jr.c | 41 +++++++++++++++++++++++++++++++++++++++++
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drivers/crypto/caam/jr.h | 2 ++
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3 files changed, 45 insertions(+)
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--- a/drivers/crypto/caam/desc.h
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+++ b/drivers/crypto/caam/desc.h
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@@ -364,6 +364,7 @@
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#define FIFOLD_TYPE_PK_N (0x08 << FIFOLD_TYPE_SHIFT)
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#define FIFOLD_TYPE_PK_A (0x0c << FIFOLD_TYPE_SHIFT)
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#define FIFOLD_TYPE_PK_B (0x0d << FIFOLD_TYPE_SHIFT)
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+#define FIFOLD_TYPE_IFIFO (0x0f << FIFOLD_TYPE_SHIFT)
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/* Other types. Need to OR in last/flush bits as desired */
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#define FIFOLD_TYPE_MSG_MASK (0x38 << FIFOLD_TYPE_SHIFT)
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@@ -1522,6 +1523,7 @@
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#define MATH_SRC1_INFIFO (0x0a << MATH_SRC1_SHIFT)
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#define MATH_SRC1_OUTFIFO (0x0b << MATH_SRC1_SHIFT)
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#define MATH_SRC1_ONE (0x0c << MATH_SRC1_SHIFT)
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+#define MATH_SRC1_ZERO (0x0f << MATH_SRC1_SHIFT)
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/* Destination selectors */
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#define MATH_DEST_SHIFT 8
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--- a/drivers/crypto/caam/jr.c
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+++ b/drivers/crypto/caam/jr.c
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@@ -62,6 +62,14 @@ algs_unlock:
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mutex_unlock(&algs_lock);
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}
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+static int jr_driver_probed;
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+
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+int caam_jr_driver_probed(void)
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+{
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+ return jr_driver_probed;
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+}
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+EXPORT_SYMBOL(caam_jr_driver_probed);
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+
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static int caam_reset_hw_jr(struct device *dev)
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{
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struct caam_drv_private_jr *jrp = dev_get_drvdata(dev);
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@@ -147,6 +155,8 @@ static int caam_jr_remove(struct platfor
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if (ret)
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dev_err(jrdev, "Failed to shut down job ring\n");
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+ jr_driver_probed--;
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+
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return ret;
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}
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@@ -311,6 +321,36 @@ struct device *caam_jr_alloc(void)
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EXPORT_SYMBOL(caam_jr_alloc);
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/**
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+ * caam_jridx_alloc() - Alloc a specific job ring based on its index.
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+ *
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+ * returns : pointer to the newly allocated physical
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+ * JobR dev can be written to if successful.
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+ **/
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+struct device *caam_jridx_alloc(int idx)
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+{
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+ struct caam_drv_private_jr *jrpriv;
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+ struct device *dev = ERR_PTR(-ENODEV);
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+
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+ spin_lock(&driver_data.jr_alloc_lock);
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+
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+ if (list_empty(&driver_data.jr_list))
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+ goto end;
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+
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+ list_for_each_entry(jrpriv, &driver_data.jr_list, list_node) {
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+ if (jrpriv->ridx == idx) {
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+ atomic_inc(&jrpriv->tfm_count);
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+ dev = jrpriv->dev;
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+ break;
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+ }
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+ }
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+
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+end:
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+ spin_unlock(&driver_data.jr_alloc_lock);
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+ return dev;
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+}
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+EXPORT_SYMBOL(caam_jridx_alloc);
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+
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+/**
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* caam_jr_free() - Free the Job Ring
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* @rdev - points to the dev that identifies the Job ring to
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* be released.
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@@ -565,6 +605,7 @@ static int caam_jr_probe(struct platform
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device_set_wakeup_enable(&pdev->dev, false);
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register_algs(jrdev->parent);
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+ jr_driver_probed++;
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return 0;
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}
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--- a/drivers/crypto/caam/jr.h
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+++ b/drivers/crypto/caam/jr.h
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@@ -9,7 +9,9 @@
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#define JR_H
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/* Prototypes for backend-level services exposed to APIs */
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+int caam_jr_driver_probed(void);
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struct device *caam_jr_alloc(void);
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+struct device *caam_jridx_alloc(int idx);
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void caam_jr_free(struct device *rdev);
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int caam_jr_enqueue(struct device *dev, u32 *desc,
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void (*cbk)(struct device *dev, u32 *desc, u32 status,
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