Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto update from Herbert Xu:
 "API:
   - Add helper for simple skcipher modes.
   - Add helper to register multiple templates.
   - Set CRYPTO_TFM_NEED_KEY when setkey fails.
   - Require neither or both of export/import in shash.
   - AEAD decryption test vectors are now generated from encryption
     ones.
   - New option CONFIG_CRYPTO_MANAGER_EXTRA_TESTS that includes random
     fuzzing.

  Algorithms:
   - Conversions to skcipher and helper for many templates.
   - Add more test vectors for nhpoly1305 and adiantum.

  Drivers:
   - Add crypto4xx prng support.
   - Add xcbc/cmac/ecb support in caam.
   - Add AES support for Exynos5433 in s5p.
   - Remove sha384/sha512 from artpec7 as hardware cannot do partial
     hash"

[ There is a merge of the Freescale SoC tree in order to pull in changes
  required by patches to the caam/qi2 driver. ]

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (174 commits)
  crypto: s5p - add AES support for Exynos5433
  dt-bindings: crypto: document Exynos5433 SlimSSS
  crypto: crypto4xx - add missing of_node_put after of_device_is_available
  crypto: cavium/zip - fix collision with generic cra_driver_name
  crypto: af_alg - use struct_size() in sock_kfree_s()
  crypto: caam - remove redundant likely/unlikely annotation
  crypto: s5p - update iv after AES-CBC op end
  crypto: x86/poly1305 - Clear key material from stack in SSE2 variant
  crypto: caam - generate hash keys in-place
  crypto: caam - fix DMA mapping xcbc key twice
  crypto: caam - fix hash context DMA unmap size
  hwrng: bcm2835 - fix probe as platform device
  crypto: s5p-sss - Use AES_BLOCK_SIZE define instead of number
  crypto: stm32 - drop pointless static qualifier in stm32_hash_remove()
  crypto: chelsio - Fixed Traffic Stall
  crypto: marvell - Remove set but not used variable 'ivsize'
  crypto: ccp - Update driver messages to remove some confusion
  crypto: adiantum - add 1536 and 4096-byte test vectors
  crypto: nhpoly1305 - add a test vector with len % 16 != 0
  crypto: arm/aes-ce - update IV after partial final CTR block
  ...

5 files changed, 90 insertions, 20 deletions

diff --git a/drivers/soc/fsl/dpio/dpio-cmd.h b/drivers/soc/fsl/dpio/dpio-cmd.h
index ab8f82ee7ee5..5814d2f395a4 100644
--- a/drivers/soc/fsl/dpio/dpio-cmd.h
+++ b/drivers/soc/fsl/dpio/dpio-cmd.h
@@ -25,6 +25,7 @@
 #define DPIO_CMDID_ENABLE				DPIO_CMD(0x002)
 #define DPIO_CMDID_DISABLE				DPIO_CMD(0x003)
 #define DPIO_CMDID_GET_ATTR				DPIO_CMD(0x004)
+#define DPIO_CMDID_RESET				DPIO_CMD(0x005)
 
 struct dpio_cmd_open {
 	__le32 dpio_id;
diff --git a/drivers/soc/fsl/dpio/dpio-driver.c b/drivers/soc/fsl/dpio/dpio-driver.c
index e58fcc9096e8..2d4af32a0dec 100644
--- a/drivers/soc/fsl/dpio/dpio-driver.c
+++ b/drivers/soc/fsl/dpio/dpio-driver.c
@@ -30,6 +30,8 @@ struct dpio_priv {
 	struct dpaa2_io *io;
 };
 
+static cpumask_var_t cpus_unused_mask;
+
 static irqreturn_t dpio_irq_handler(int irq_num, void *arg)
 {
 	struct device *dev = (struct device *)arg;
@@ -86,7 +88,7 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
 	struct dpio_priv *priv;
 	int err = -ENOMEM;
 	struct device *dev = &dpio_dev->dev;
-	static int next_cpu = -1;
+	int possible_next_cpu;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
@@ -108,6 +110,12 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
 		goto err_open;
 	}
 
+	err = dpio_reset(dpio_dev->mc_io, 0, dpio_dev->mc_handle);
+	if (err) {
+		dev_err(dev, "dpio_reset() failed\n");
+		goto err_reset;
+	}
+
 	err = dpio_get_attributes(dpio_dev->mc_io, 0, dpio_dev->mc_handle,
 				  &dpio_attrs);
 	if (err) {
@@ -128,17 +136,14 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
 	desc.dpio_id = dpio_dev->obj_desc.id;
 
 	/* get the cpu to use for the affinity hint */
-	if (next_cpu == -1)
-		next_cpu = cpumask_first(cpu_online_mask);
-	else
-		next_cpu = cpumask_next(next_cpu, cpu_online_mask);
-
-	if (!cpu_possible(next_cpu)) {
+	possible_next_cpu = cpumask_first(cpus_unused_mask);
+	if (possible_next_cpu >= nr_cpu_ids) {
 		dev_err(dev, "probe failed. Number of DPIOs exceeds NR_CPUS.\n");
 		err = -ERANGE;
 		goto err_allocate_irqs;
 	}
-	desc.cpu = next_cpu;
+	desc.cpu = possible_next_cpu;
+	cpumask_clear_cpu(possible_next_cpu, cpus_unused_mask);
 
 	/*
 	 * Set the CENA regs to be the cache inhibited area of the portal to
@@ -171,7 +176,7 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
 	if (err)
 		goto err_register_dpio_irq;
 
-	priv->io = dpaa2_io_create(&desc);
+	priv->io = dpaa2_io_create(&desc, dev);
 	if (!priv->io) {
 		dev_err(dev, "dpaa2_io_create failed\n");
 		err = -ENOMEM;
@@ -182,7 +187,6 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
 	dev_dbg(dev, "   receives_notifications = %d\n",
 		desc.receives_notifications);
 	dpio_close(dpio_dev->mc_io, 0, dpio_dev->mc_handle);
-	fsl_mc_portal_free(dpio_dev->mc_io);
 
 	return 0;
 
@@ -193,6 +197,7 @@ err_register_dpio_irq:
 err_allocate_irqs:
 	dpio_disable(dpio_dev->mc_io, 0, dpio_dev->mc_handle);
 err_get_attr:
+err_reset:
 	dpio_close(dpio_dev->mc_io, 0, dpio_dev->mc_handle);
 err_open:
 	fsl_mc_portal_free(dpio_dev->mc_io);
@@ -211,7 +216,7 @@ static int dpaa2_dpio_remove(struct fsl_mc_device *dpio_dev)
 {
 	struct device *dev;
 	struct dpio_priv *priv;
-	int err;
+	int err = 0, cpu;
 
 	dev = &dpio_dev->dev;
 	priv = dev_get_drvdata(dev);
@@ -220,11 +225,8 @@ static int dpaa2_dpio_remove(struct fsl_mc_device *dpio_dev)
 
 	dpio_teardown_irqs(dpio_dev);
 
-	err = fsl_mc_portal_allocate(dpio_dev, 0, &dpio_dev->mc_io);
-	if (err) {
-		dev_err(dev, "MC portal allocation failed\n");
-		goto err_mcportal;
-	}
+	cpu = dpaa2_io_get_cpu(priv->io);
+	cpumask_set_cpu(cpu, cpus_unused_mask);
 
 	err = dpio_open(dpio_dev->mc_io, 0, dpio_dev->obj_desc.id,
 			&dpio_dev->mc_handle);
@@ -243,7 +245,7 @@ static int dpaa2_dpio_remove(struct fsl_mc_device *dpio_dev)
 
 err_open:
 	fsl_mc_portal_free(dpio_dev->mc_io);
-err_mcportal:
+
 	return err;
 }
 
@@ -267,11 +269,16 @@ static struct fsl_mc_driver dpaa2_dpio_driver = {
 
 static int dpio_driver_init(void)
 {
+	if (!zalloc_cpumask_var(&cpus_unused_mask, GFP_KERNEL))
+		return -ENOMEM;
+	cpumask_copy(cpus_unused_mask, cpu_online_mask);
+
 	return fsl_mc_driver_register(&dpaa2_dpio_driver);
 }
 
 static void dpio_driver_exit(void)
 {
+	free_cpumask_var(cpus_unused_mask);
 	fsl_mc_driver_unregister(&dpaa2_dpio_driver);
 }
 module_init(dpio_driver_init);
diff --git a/drivers/soc/fsl/dpio/dpio-service.c b/drivers/soc/fsl/dpio/dpio-service.c
index ec0837ff039a..bc801934602a 100644
--- a/drivers/soc/fsl/dpio/dpio-service.c
+++ b/drivers/soc/fsl/dpio/dpio-service.c
@@ -27,6 +27,7 @@ struct dpaa2_io {
 	/* protect notifications list */
 	spinlock_t lock_notifications;
 	struct list_head notifications;
+	struct device *dev;
 };
 
 struct dpaa2_io_store {
@@ -98,13 +99,15 @@ EXPORT_SYMBOL_GPL(dpaa2_io_service_select);
 /**
  * dpaa2_io_create() - create a dpaa2_io object.
  * @desc: the dpaa2_io descriptor
+ * @dev: the actual DPIO device
  *
  * Activates a "struct dpaa2_io" corresponding to the given config of an actual
  * DPIO object.
  *
  * Return a valid dpaa2_io object for success, or NULL for failure.
  */
-struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc)
+struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc,
+				 struct device *dev)
 {
 	struct dpaa2_io *obj = kmalloc(sizeof(*obj), GFP_KERNEL);
 
@@ -146,6 +149,8 @@ struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc)
 		dpio_by_cpu[desc->cpu] = obj;
 	spin_unlock(&dpio_list_lock);
 
+	obj->dev = dev;
+
 	return obj;
 }
 
@@ -160,6 +165,11 @@ struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc)
  */
 void dpaa2_io_down(struct dpaa2_io *d)
 {
+	spin_lock(&dpio_list_lock);
+	dpio_by_cpu[d->dpio_desc.cpu] = NULL;
+	list_del(&d->node);
+	spin_unlock(&dpio_list_lock);
+
 	kfree(d);
 }
 
@@ -210,10 +220,24 @@ done:
 }
 
 /**
+ * dpaa2_io_get_cpu() - get the cpu associated with a given DPIO object
+ *
+ * @d: the given DPIO object.
+ *
+ * Return the cpu associated with the DPIO object
+ */
+int dpaa2_io_get_cpu(struct dpaa2_io *d)
+{
+	return d->dpio_desc.cpu;
+}
+EXPORT_SYMBOL(dpaa2_io_get_cpu);
+
+/**
  * dpaa2_io_service_register() - Prepare for servicing of FQDAN or CDAN
  *                               notifications on the given DPIO service.
  * @d:   the given DPIO service.
  * @ctx: the notification context.
+ * @dev: the device that requests the register
  *
  * The caller should make the MC command to attach a DPAA2 object to
  * a DPIO after this function completes successfully.  In that way:
@@ -228,14 +252,20 @@ done:
  * Return 0 for success, or -ENODEV for failure.
  */
 int dpaa2_io_service_register(struct dpaa2_io *d,
-			      struct dpaa2_io_notification_ctx *ctx)
+			      struct dpaa2_io_notification_ctx *ctx,
+			      struct device *dev)
 {
+	struct device_link *link;
 	unsigned long irqflags;
 
 	d = service_select_by_cpu(d, ctx->desired_cpu);
 	if (!d)
 		return -ENODEV;
 
+	link = device_link_add(dev, d->dev, DL_FLAG_AUTOREMOVE_CONSUMER);
+	if (!link)
+		return -EINVAL;
+
 	ctx->dpio_id = d->dpio_desc.dpio_id;
 	ctx->qman64 = (u64)(uintptr_t)ctx;
 	ctx->dpio_private = d;
@@ -256,12 +286,14 @@ EXPORT_SYMBOL_GPL(dpaa2_io_service_register);
  * dpaa2_io_service_deregister - The opposite of 'register'.
  * @service: the given DPIO service.
  * @ctx: the notification context.
+ * @dev: the device that requests to be deregistered
  *
  * This function should be called only after sending the MC command to
  * to detach the notification-producing device from the DPIO.
  */
 void dpaa2_io_service_deregister(struct dpaa2_io *service,
-				 struct dpaa2_io_notification_ctx *ctx)
+				 struct dpaa2_io_notification_ctx *ctx,
+				 struct device *dev)
 {
 	struct dpaa2_io *d = ctx->dpio_private;
 	unsigned long irqflags;
@@ -272,6 +304,9 @@ void dpaa2_io_service_deregister(struct dpaa2_io *service,
 	spin_lock_irqsave(&d->lock_notifications, irqflags);
 	list_del(&ctx->node);
 	spin_unlock_irqrestore(&d->lock_notifications, irqflags);
+
+	if (dev)
+		device_link_remove(dev, d->dev);
 }
 EXPORT_SYMBOL_GPL(dpaa2_io_service_deregister);
 
diff --git a/drivers/soc/fsl/dpio/dpio.c b/drivers/soc/fsl/dpio/dpio.c
index ff37c80e11a0..521bc6946317 100644
--- a/drivers/soc/fsl/dpio/dpio.c
+++ b/drivers/soc/fsl/dpio/dpio.c
@@ -196,3 +196,26 @@ int dpio_get_api_version(struct fsl_mc_io *mc_io,
 
 	return 0;
 }
+
+/**
+ * dpio_reset() - Reset the DPIO, returns the object to initial state.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPIO object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpio_reset(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPIO_CMDID_RESET,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
diff --git a/drivers/soc/fsl/dpio/dpio.h b/drivers/soc/fsl/dpio/dpio.h
index 49194c8e45f1..b2ac4ba4fb8e 100644
--- a/drivers/soc/fsl/dpio/dpio.h
+++ b/drivers/soc/fsl/dpio/dpio.h
@@ -80,4 +80,8 @@ int dpio_get_api_version(struct fsl_mc_io *mc_io,
 			 u16 *major_ver,
 			 u16 *minor_ver);
 
+int dpio_reset(struct fsl_mc_io	*mc_io,
+	       u32 cmd_flags,
+	       u16 token);
+
 #endif /* __FSL_DPIO_H */