X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fcrypto%2Fccp%2Fccp_dev.c;h=7d98b2eb2567e157c91c53fa8f70a1b129e2d335;hb=a5ac40fbb33da0d3e110df7eee593c32cbb11406;hp=48bebb289e0db6122e91d8c692859266b57aa9bd;hpb=70f0f8a8d78c3e9cb9b478665d196210d7cd946b;p=dpdk.git

diff --git a/drivers/crypto/ccp/ccp_dev.c b/drivers/crypto/ccp/ccp_dev.c
index 48bebb289e..7d98b2eb25 100644
--- a/drivers/crypto/ccp/ccp_dev.c
+++ b/drivers/crypto/ccp/ccp_dev.c
@@ -62,6 +62,26 @@ ccp_allot_queue(struct rte_cryptodev *cdev, int slot_req)
 	return NULL;
 }
 
+int
+ccp_read_hwrng(uint32_t *value)
+{
+	struct ccp_device *dev;
+
+	TAILQ_FOREACH(dev, &ccp_list, next) {
+		void *vaddr = (void *)(dev->pci.mem_resource[2].addr);
+
+		while (dev->hwrng_retries++ < CCP_MAX_TRNG_RETRIES) {
+			*value = CCP_READ_REG(vaddr, TRNG_OUT_REG);
+			if (*value) {
+				dev->hwrng_retries = 0;
+				return 0;
+			}
+		}
+		dev->hwrng_retries = 0;
+	}
+	return -1;
+}
+
 static const struct rte_memzone *
 ccp_queue_dma_zone_reserve(const char *queue_name,
 			   uint32_t queue_size,
@@ -740,7 +760,7 @@ ccp_probe_device(const char *dirname, uint16_t domain,
 	return 0;
 fail:
 	CCP_LOG_ERR("CCP Device probe failed");
-	if (uio_fd > 0)
+	if (uio_fd >= 0)
 		close(uio_fd);
 	if (ccp_dev)
 		rte_free(ccp_dev);