Merge: crypto: ccp: update ccp driver upto v6.2-rc6

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/1943

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2130715

Bring in important CCP driver patches and fixes from upstream
upto v6.2-rc6. All the patches apply cleanly.

Signed-off-by: Vladis Dronov <vdronov@redhat.com>

Approved-by: Ondrej Mosnáček <omosnacek@gmail.com>
Approved-by: Phil Auld <pauld@redhat.com>
Approved-by: Herbert Xu <zxu@redhat.com>

Signed-off-by: Herton R. Krzesinski <herton@redhat.com>

Author: Herton R. Krzesinski

drivers/crypto/ccp/ccp-crypto-main.c

@@ -78,13 +78,6 @@ struct ccp_crypto_cmd {
 	int ret;
 };
 
-struct ccp_crypto_cpu {
-	struct work_struct work;
-	struct completion completion;
-	struct ccp_crypto_cmd *crypto_cmd;
-	int err;
-};
-
 static inline bool ccp_crypto_success(int err)
 {
 	if (err && (err != -EINPROGRESS) && (err != -EBUSY))
@@ -400,7 +393,7 @@ static void ccp_unregister_algs(void)
 	}
 }
 
-static int ccp_crypto_init(void)
+static int __init ccp_crypto_init(void)
 {
 	int ret;
 
@@ -421,7 +414,7 @@ static int ccp_crypto_init(void)
 	return ret;
 }
 
-static void ccp_crypto_exit(void)
+static void __exit ccp_crypto_exit(void)
 {
 	ccp_unregister_algs();
 }

drivers/crypto/ccp/ccp-dmaengine.c

@@ -642,14 +642,26 @@ static void ccp_dma_release(struct ccp_device *ccp)
 		chan = ccp->ccp_dma_chan + i;
 		dma_chan = &chan->dma_chan;
 
-		if (dma_chan->client_count)
-			dma_release_channel(dma_chan);
-
 		tasklet_kill(&chan->cleanup_tasklet);
 		list_del_rcu(&dma_chan->device_node);
 	}
 }
 
+static void ccp_dma_release_channels(struct ccp_device *ccp)
+{
+	struct ccp_dma_chan *chan;
+	struct dma_chan *dma_chan;
+	unsigned int i;
+
+	for (i = 0; i < ccp->cmd_q_count; i++) {
+		chan = ccp->ccp_dma_chan + i;
+		dma_chan = &chan->dma_chan;
+
+		if (dma_chan->client_count)
+			dma_release_channel(dma_chan);
+	}
+}
+
 int ccp_dmaengine_register(struct ccp_device *ccp)
 {
 	struct ccp_dma_chan *chan;
@@ -770,8 +782,9 @@ void ccp_dmaengine_unregister(struct ccp_device *ccp)
 	if (!dmaengine)
 		return;
 
-	ccp_dma_release(ccp);
+	ccp_dma_release_channels(ccp);
 	dma_async_device_unregister(dma_dev);
+	ccp_dma_release(ccp);
 
 	kmem_cache_destroy(ccp->dma_desc_cache);
 	kmem_cache_destroy(ccp->dma_cmd_cache);

drivers/crypto/ccp/sev-dev.c

@@ -881,7 +881,14 @@ static int sev_ioctl_do_get_id2(struct sev_issue_cmd *argp)
 	input_address = (void __user *)input.address;
 
 	if (input.address && input.length) {
-		id_blob = kzalloc(input.length, GFP_KERNEL);
+		/*
+		 * The length of the ID shouldn't be assumed by software since
+		 * it may change in the future.  The allocation size is limited
+		 * to 1 << (PAGE_SHIFT + MAX_ORDER - 1) by the page allocator.
+		 * If the allocation fails, simply return ENOMEM rather than
+		 * warning in the kernel log.
+		 */
+		id_blob = kzalloc(input.length, GFP_KERNEL | __GFP_NOWARN);
 		if (!id_blob)
 			return -ENOMEM;
 

drivers/crypto/ccp/sp-pci.c

@@ -381,6 +381,15 @@ static const struct psp_vdata pspv3 = {
 	.inten_reg		= 0x10690,
 	.intsts_reg		= 0x10694,
 };
+
+static const struct psp_vdata pspv4 = {
+	.sev			= &sevv2,
+	.tee			= &teev1,
+	.feature_reg		= 0x109fc,
+	.inten_reg		= 0x10690,
+	.intsts_reg		= 0x10694,
+};
+
 #endif
 
 static const struct sp_dev_vdata dev_vdata[] = {
@@ -426,7 +435,7 @@ static const struct sp_dev_vdata dev_vdata[] = {
 	{	/* 5 */
 		.bar = 2,
 #ifdef CONFIG_CRYPTO_DEV_SP_PSP
-		.psp_vdata = &pspv2,
+		.psp_vdata = &pspv4,
 #endif
 	},
 	{	/* 6 */