crypto: octeontx2 - add LF framework

CPT RVU Local Functions(LFs) needs to be attached to the
PF/VF to submit the instructions to CPT.
This patch adds the interface to initialize and attach
the LFs. It also adds interface to register the LF's
interrupts.

Signed-off-by: Suheil Chandran <schandran@marvell.com>
Signed-off-by: Lukasz Bartosik <lbartosik@marvell.com>
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Author: SruChalla

drivers/crypto/marvell/octeontx2/Makefile

@@ -2,6 +2,6 @@
 obj-$(CONFIG_CRYPTO_DEV_OCTEONTX2_CPT) += octeontx2-cpt.o
 
 octeontx2-cpt-objs := otx2_cptpf_main.o otx2_cptpf_mbox.o \
-		      otx2_cpt_mbox_common.o otx2_cptpf_ucode.o
+		      otx2_cpt_mbox_common.o otx2_cptpf_ucode.o otx2_cptlf.o
 
 ccflags-y += -I$(srctree)/drivers/net/ethernet/marvell/octeontx2/af

drivers/crypto/marvell/octeontx2/otx2_cpt_common.h

@@ -76,4 +76,8 @@ int otx2_cpt_read_af_reg(struct otx2_mbox *mbox, struct pci_dev *pdev,
 			 u64 reg, u64 *val);
 int otx2_cpt_write_af_reg(struct otx2_mbox *mbox, struct pci_dev *pdev,
 			  u64 reg, u64 val);
+struct otx2_cptlfs_info;
+int otx2_cpt_attach_rscrs_msg(struct otx2_cptlfs_info *lfs);
+int otx2_cpt_detach_rsrcs_msg(struct otx2_cptlfs_info *lfs);
+
 #endif /* __OTX2_CPT_COMMON_H */

drivers/crypto/marvell/octeontx2/otx2_cpt_mbox_common.c

@@ -2,6 +2,7 @@
 /* Copyright (C) 2020 Marvell. */
 
 #include "otx2_cpt_common.h"
+#include "otx2_cptlf.h"
 
 int otx2_cpt_send_mbox_msg(struct otx2_mbox *mbox, struct pci_dev *pdev)
 {
@@ -112,3 +113,58 @@ int otx2_cpt_write_af_reg(struct otx2_mbox *mbox, struct pci_dev *pdev,
 
 	return otx2_cpt_send_mbox_msg(mbox, pdev);
 }
+
+int otx2_cpt_attach_rscrs_msg(struct otx2_cptlfs_info *lfs)
+{
+	struct otx2_mbox *mbox = lfs->mbox;
+	struct rsrc_attach *req;
+	int ret;
+
+	req = (struct rsrc_attach *)
+			otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
+						sizeof(struct msg_rsp));
+	if (req == NULL) {
+		dev_err(&lfs->pdev->dev, "RVU MBOX failed to get message.\n");
+		return -EFAULT;
+	}
+
+	req->hdr.id = MBOX_MSG_ATTACH_RESOURCES;
+	req->hdr.sig = OTX2_MBOX_REQ_SIG;
+	req->hdr.pcifunc = 0;
+	req->cptlfs = lfs->lfs_num;
+	ret = otx2_cpt_send_mbox_msg(mbox, lfs->pdev);
+	if (ret)
+		return ret;
+
+	if (!lfs->are_lfs_attached)
+		ret = -EINVAL;
+
+	return ret;
+}
+
+int otx2_cpt_detach_rsrcs_msg(struct otx2_cptlfs_info *lfs)
+{
+	struct otx2_mbox *mbox = lfs->mbox;
+	struct rsrc_detach *req;
+	int ret;
+
+	req = (struct rsrc_detach *)
+				otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
+							sizeof(struct msg_rsp));
+	if (req == NULL) {
+		dev_err(&lfs->pdev->dev, "RVU MBOX failed to get message.\n");
+		return -EFAULT;
+	}
+
+	req->hdr.id = MBOX_MSG_DETACH_RESOURCES;
+	req->hdr.sig = OTX2_MBOX_REQ_SIG;
+	req->hdr.pcifunc = 0;
+	ret = otx2_cpt_send_mbox_msg(mbox, lfs->pdev);
+	if (ret)
+		return ret;
+
+	if (lfs->are_lfs_attached)
+		ret = -EINVAL;
+
+	return ret;
+}