crypto: octeontx2 - hardware configuration for inline IPsec

On OcteonTX2/OctoenTX3 variants of silicon, Admin function (AF)
handles resource allocation and configuration for PFs and their VFs.
PFs request the AF directly, via mailboxes.
Unlike PFs, VFs cannot send a mailbox request directly. A VF sends
mailbox messages to its parent PF, with which it shares a
mailbox region. The PF then forwards these messages to the AF.

This patch adds code to configure inline-IPsec HW resources for
CPT VFs as CPT VFs cannot send a mailbox request directly to AF.

Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c b/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c
index 612a764b8a8c..91855e9f9f8f 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_main.c
@@ -13,6 +13,8 @@
 #define OTX2_CPT_DRV_NAME    "rvu_cptpf"
 #define OTX2_CPT_DRV_STRING  "Marvell RVU CPT Physical Function Driver"
 
+#define CPT_UC_RID_CN9K_B0   1
+
 static void cptpf_enable_vfpf_mbox_intr(struct otx2_cptpf_dev *cptpf,
 					int num_vfs)
 {
@@ -498,6 +500,32 @@ static void cptpf_afpf_mbox_destroy(struct otx2_cptpf_dev *cptpf)
 	otx2_mbox_destroy(&cptpf->afpf_mbox_up);
 }
 
+static ssize_t sso_pf_func_ovrd_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct otx2_cptpf_dev *cptpf = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%d\n", cptpf->sso_pf_func_ovrd);
+}
+
+static ssize_t sso_pf_func_ovrd_store(struct device *dev,
+				      struct device_attribute *attr,
+				      const char *buf, size_t count)
+{
+	struct otx2_cptpf_dev *cptpf = dev_get_drvdata(dev);
+	u8 sso_pf_func_ovrd;
+
+	if (!(cptpf->pdev->revision == CPT_UC_RID_CN9K_B0))
+		return count;
+
+	if (kstrtou8(buf, 0, &sso_pf_func_ovrd))
+		return -EINVAL;
+
+	cptpf->sso_pf_func_ovrd = sso_pf_func_ovrd;
+
+	return count;
+}
+
 static ssize_t kvf_limits_show(struct device *dev,
 			       struct device_attribute *attr, char *buf)
 {
@@ -528,8 +556,11 @@ static ssize_t kvf_limits_store(struct device *dev,
 }
 
 static DEVICE_ATTR_RW(kvf_limits);
+static DEVICE_ATTR_RW(sso_pf_func_ovrd);
+
 static struct attribute *cptpf_attrs[] = {
 	&dev_attr_kvf_limits.attr,
+	&dev_attr_sso_pf_func_ovrd.attr,
 	NULL
 };