octeontx2-af: Enable mkex profile

The following set of NPC registers allow the driver to configure NPC
to generate different key value schemes to compare against packet
payload in MCAM search.

NPC_AF_INTF(0..1)_KEX_CFG
NPC_AF_KEX_LDATA(0..1)_FLAGS_CFG
NPC_AF_INTF(0..1)_LID(0..7)_LT(0..15)_LD(0..1)_CFG
NPC_AF_INTF(0..1)_LDATA(0..1)_FLAGS(0..15)_CFG

Currently, the AF driver populates these registers to
configure the default values to address the most common
use cases such as key generation for channel number + DMAC.

The secure firmware stores different configuration
value of these registers to enable different NPC use case
along with the name for the lookup.

Patch loads profile binary from secure firmware over
the exiting CGX mailbox interface and apply the profile.

AF driver shall fall back to the default configuration
in case of any errors.

The AF consumer driver can know the selected profile
on response to NPC_GET_KEX_CFG mailbox by introducing
mkex_pfl_name in the struct npc_get_kex_cfg_rsp.

Signed-off-by: Vamsi Attunuru <vamsi.attunuru@marvell.com>
Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 54 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index 4c94571e03eb..742f0c1f60df 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -498,6 +498,60 @@ static inline bool cgx_event_is_linkevent(u64 event)
 		return false;
 }
 
+static inline int cgx_fwi_get_mkex_prfl_sz(u64 *prfl_sz,
+					   struct cgx *cgx)
+{
+	u64 req = 0;
+	u64 resp;
+	int err;
+
+	req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_MKEX_PRFL_SIZE, req);
+	err = cgx_fwi_cmd_generic(req, &resp, cgx, 0);
+	if (!err)
+		*prfl_sz = FIELD_GET(RESP_MKEX_PRFL_SIZE, resp);
+
+	return err;
+}
+
+static inline int cgx_fwi_get_mkex_prfl_addr(u64 *prfl_addr,
+					     struct cgx *cgx)
+{
+	u64 req = 0;
+	u64 resp;
+	int err;
+
+	req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_MKEX_PRFL_ADDR, req);
+	err = cgx_fwi_cmd_generic(req, &resp, cgx, 0);
+	if (!err)
+		*prfl_addr = FIELD_GET(RESP_MKEX_PRFL_ADDR, resp);
+
+	return err;
+}
+
+int cgx_get_mkex_prfl_info(u64 *addr, u64 *size)
+{
+	struct cgx *cgx_dev;
+	int err;
+
+	if (!addr || !size)
+		return -EINVAL;
+
+	cgx_dev = list_first_entry(&cgx_list, struct cgx, cgx_list);
+	if (!cgx_dev)
+		return -ENXIO;
+
+	err = cgx_fwi_get_mkex_prfl_sz(size, cgx_dev);
+	if (err)
+		return -EIO;
+
+	err = cgx_fwi_get_mkex_prfl_addr(addr, cgx_dev);
+	if (err)
+		return -EIO;
+
+	return 0;
+}
+EXPORT_SYMBOL(cgx_get_mkex_prfl_info);
+
 static irqreturn_t cgx_fwi_event_handler(int irq, void *data)
 {
 	struct lmac *lmac = data;