[PATCH] common/cnxk: allow building generic arm64 target for cn9k/cn10k

[Tomasz Duszynski]

Allow building generic arm64 target using config/arm/arm64_armv8_linux_*
config which works on both cn9k and cn10k by relaxing cache line size
requirements a bit.

While at it move cache line checks to common place.

Signed-off-by: Tomasz Duszynski <tduszynski at marvell.com>
Reviewed-by: Jerin Jacob Kollanukkaran <jerinj at marvell.com>
---
 drivers/common/cnxk/roc_dev.c       | 26 ++++++++++++++++++++++++++
 drivers/event/cnxk/cn10k_eventdev.c |  5 -----
 drivers/event/cnxk/cn9k_eventdev.c  |  5 -----
 drivers/net/cnxk/cn10k_ethdev.c     |  5 -----
 drivers/net/cnxk/cn9k_ethdev.c      |  5 -----
 5 files changed, 26 insertions(+), 20 deletions(-)

diff --git a/drivers/common/cnxk/roc_dev.c b/drivers/common/cnxk/roc_dev.c
index 9a869698c4..09199ac2ff 100644
--- a/drivers/common/cnxk/roc_dev.c
+++ b/drivers/common/cnxk/roc_dev.c
@@ -1094,6 +1094,29 @@ dev_lmt_setup(struct dev *dev)
 	return -errno;
 }
 
+static bool
+dev_cache_line_size_valid(void)
+{
+	if (roc_model_is_cn9k()) {
+		if (PLT_CACHE_LINE_SIZE != 128) {
+			plt_err("Cache line size of %d is wrong for CN9K",
+				PLT_CACHE_LINE_SIZE);
+			return false;
+		}
+	} else if (roc_model_is_cn10k()) {
+		if (PLT_CACHE_LINE_SIZE == 128) {
+			plt_warn("Cache line size of %d might affect performance",
+				 PLT_CACHE_LINE_SIZE);
+		} else if (PLT_CACHE_LINE_SIZE != 64) {
+			plt_err("Cache line size of %d is wrong for CN10K",
+				PLT_CACHE_LINE_SIZE);
+			return false;
+		}
+	}
+
+	return true;
+}
+
 int
 dev_init(struct dev *dev, struct plt_pci_device *pci_dev)
 {
@@ -1102,6 +1125,9 @@ dev_init(struct dev *dev, struct plt_pci_device *pci_dev)
 	uintptr_t vf_mbase = 0;
 	uint64_t intr_offset;
 
+	if (!dev_cache_line_size_valid())
+		return -EFAULT;
+
 	bar2 = (uintptr_t)pci_dev->mem_resource[2].addr;
 	bar4 = (uintptr_t)pci_dev->mem_resource[4].addr;
 	if (bar2 == 0 || bar4 == 0) {
diff --git a/drivers/event/cnxk/cn10k_eventdev.c b/drivers/event/cnxk/cn10k_eventdev.c
index 77f0c28160..25d01fd90a 100644
--- a/drivers/event/cnxk/cn10k_eventdev.c
+++ b/drivers/event/cnxk/cn10k_eventdev.c
@@ -963,11 +963,6 @@ cn10k_sso_init(struct rte_eventdev *event_dev)
 	struct cnxk_sso_evdev *dev = cnxk_sso_pmd_priv(event_dev);
 	int rc;
 
-	if (RTE_CACHE_LINE_SIZE != 64) {
-		plt_err("Driver not compiled for CN10K");
-		return -EFAULT;
-	}
-
 	rc = roc_plt_init();
 	if (rc < 0) {
 		plt_err("Failed to initialize platform model");
diff --git a/drivers/event/cnxk/cn9k_eventdev.c b/drivers/event/cnxk/cn9k_eventdev.c
index 4d45f02c1c..6fef15e352 100644
--- a/drivers/event/cnxk/cn9k_eventdev.c
+++ b/drivers/event/cnxk/cn9k_eventdev.c
@@ -1193,11 +1193,6 @@ cn9k_sso_init(struct rte_eventdev *event_dev)
 	struct cnxk_sso_evdev *dev = cnxk_sso_pmd_priv(event_dev);
 	int rc;
 
-	if (RTE_CACHE_LINE_SIZE != 128) {
-		plt_err("Driver not compiled for CN9K");
-		return -EFAULT;
-	}
-
 	rc = roc_plt_init();
 	if (rc < 0) {
 		plt_err("Failed to initialize platform model");
diff --git a/drivers/net/cnxk/cn10k_ethdev.c b/drivers/net/cnxk/cn10k_ethdev.c
index 4cd82af7e5..33f61743f9 100644
--- a/drivers/net/cnxk/cn10k_ethdev.c
+++ b/drivers/net/cnxk/cn10k_ethdev.c
@@ -759,11 +759,6 @@ cn10k_nix_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 	struct cnxk_eth_dev *dev;
 	int rc;
 
-	if (RTE_CACHE_LINE_SIZE != 64) {
-		plt_err("Driver not compiled for CN10K");
-		return -EFAULT;
-	}
-
 	rc = roc_plt_init();
 	if (rc) {
 		plt_err("Failed to initialize platform model, rc=%d", rc);
diff --git a/drivers/net/cnxk/cn9k_ethdev.c b/drivers/net/cnxk/cn9k_ethdev.c
index a388b3a8a6..fb34d20759 100644
--- a/drivers/net/cnxk/cn9k_ethdev.c
+++ b/drivers/net/cnxk/cn9k_ethdev.c
@@ -689,11 +689,6 @@ cn9k_nix_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 	struct cnxk_eth_dev *dev;
 	int rc;
 
-	if (RTE_CACHE_LINE_SIZE != 128) {
-		plt_err("Driver not compiled for CN9K");
-		return -EFAULT;
-	}
-
 	rc = roc_plt_init();
 	if (rc) {
 		plt_err("Failed to initialize platform model, rc=%d", rc);
-- 
2.25.1