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/*
* Copyright (C) 2014 Freescale Semiconductor
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __LDPAA_ETH_H
#define __LDPAA_ETH_H
#include <linux/netdevice.h>
#include <fsl-mc/fsl_mc.h>
#include <fsl-mc/fsl_dpaa_fd.h>
#include <fsl-mc/fsl_dprc.h>
#include <fsl-mc/fsl_dpni.h>
#include <fsl-mc/fsl_dpbp.h>
#include <fsl-mc/fsl_dpio.h>
#include <fsl-mc/fsl_qbman_portal.h>
#include <fsl-mc/fsl_mc_private.h>
enum ldpaa_eth_type {
LDPAA_ETH_1G_E,
LDPAA_ETH_10G_E,
};
/* Arbitrary values for now, but we'll need to tune */
#define LDPAA_ETH_NUM_BUFS (2 * 7)
#define LDPAA_ETH_REFILL_THRESH (LDPAA_ETH_NUM_BUFS/2)
#define LDPAA_ETH_RX_BUFFER_SIZE 2048
/* Hardware requires alignment for ingress/egress buffer addresses
* and ingress buffer lengths.
*/
#define LDPAA_ETH_BUF_ALIGN 64
/* So far we're only accomodating a skb backpointer in the frame's
* software annotation, but the hardware options are either 0 or 64.
*/
#define LDPAA_ETH_SWA_SIZE 64
/* Annotation valid bits in FD FRC */
#define LDPAA_FD_FRC_FASV 0x8000
#define LDPAA_FD_FRC_FAEADV 0x4000
#define LDPAA_FD_FRC_FAPRV 0x2000
#define LDPAA_FD_FRC_FAIADV 0x1000
#define LDPAA_FD_FRC_FASWOV 0x0800
#define LDPAA_FD_FRC_FAICFDV 0x0400
/* Annotation bits in FD CTRL */
#define LDPAA_FD_CTRL_ASAL 0x00020000 /* ASAL = 128 */
#define LDPAA_FD_CTRL_PTA 0x00800000
#define LDPAA_FD_CTRL_PTV1 0x00400000
/* TODO: we may want to move this and other WRIOP related defines
* to a separate header
*/
/* Frame annotation status */
struct ldpaa_fas {
u8 reserved;
u8 ppid;
__le16 ifpid;
__le32 status;
} __packed;
/* Debug frame, otherwise supposed to be discarded */
#define LDPAA_ETH_FAS_DISC 0x80000000
/* MACSEC frame */
#define LDPAA_ETH_FAS_MS 0x40000000
#define LDPAA_ETH_FAS_PTP 0x08000000
/* Ethernet multicast frame */
#define LDPAA_ETH_FAS_MC 0x04000000
/* Ethernet broadcast frame */
#define LDPAA_ETH_FAS_BC 0x02000000
#define LDPAA_ETH_FAS_KSE 0x00040000
#define LDPAA_ETH_FAS_EOFHE 0x00020000
#define LDPAA_ETH_FAS_MNLE 0x00010000
#define LDPAA_ETH_FAS_TIDE 0x00008000
#define LDPAA_ETH_FAS_PIEE 0x00004000
/* Frame length error */
#define LDPAA_ETH_FAS_FLE 0x00002000
/* Frame physical error; our favourite pastime */
#define LDPAA_ETH_FAS_FPE 0x00001000
#define LDPAA_ETH_FAS_PTE 0x00000080
#define LDPAA_ETH_FAS_ISP 0x00000040
#define LDPAA_ETH_FAS_PHE 0x00000020
#define LDPAA_ETH_FAS_BLE 0x00000010
/* L3 csum validation performed */
#define LDPAA_ETH_FAS_L3CV 0x00000008
/* L3 csum error */
#define LDPAA_ETH_FAS_L3CE 0x00000004
/* L4 csum validation performed */
#define LDPAA_ETH_FAS_L4CV 0x00000002
/* L4 csum error */
#define LDPAA_ETH_FAS_L4CE 0x00000001
/* These bits always signal errors */
#define LDPAA_ETH_RX_ERR_MASK (LDPAA_ETH_FAS_DISC | \
LDPAA_ETH_FAS_KSE | \
LDPAA_ETH_FAS_EOFHE | \
LDPAA_ETH_FAS_MNLE | \
LDPAA_ETH_FAS_TIDE | \
LDPAA_ETH_FAS_PIEE | \
LDPAA_ETH_FAS_FLE | \
LDPAA_ETH_FAS_FPE | \
LDPAA_ETH_FAS_PTE | \
LDPAA_ETH_FAS_ISP | \
LDPAA_ETH_FAS_PHE | \
LDPAA_ETH_FAS_BLE | \
LDPAA_ETH_FAS_L3CE | \
LDPAA_ETH_FAS_L4CE)
/* Unsupported features in the ingress */
#define LDPAA_ETH_RX_UNSUPP_MASK LDPAA_ETH_FAS_MS
/* TODO trim down the bitmask; not all of them apply to Tx-confirm */
#define LDPAA_ETH_TXCONF_ERR_MASK (LDPAA_ETH_FAS_KSE | \
LDPAA_ETH_FAS_EOFHE | \
LDPAA_ETH_FAS_MNLE | \
LDPAA_ETH_FAS_TIDE)
struct ldpaa_eth_priv {
struct eth_device *net_dev;
int dpni_id;
uint16_t dpni_handle;
struct dpni_attr dpni_attrs;
/* Insofar as the MC is concerned, we're using one layout on all 3 types
* of buffers (Rx, Tx, Tx-Conf).
*/
struct dpni_buffer_layout buf_layout;
uint16_t tx_data_offset;
uint32_t rx_dflt_fqid;
uint16_t tx_qdid;
uint16_t tx_flow_id;
enum ldpaa_eth_type type; /* 1G or 10G ethernet */
struct phy_device *phydev;
};
extern struct fsl_mc_io *dflt_mc_io;
extern struct fsl_dpbp_obj *dflt_dpbp;
extern struct fsl_dpio_obj *dflt_dpio;
static void ldpaa_dpbp_drain_cnt(int count);
static void ldpaa_dpbp_drain(void);
static int ldpaa_dpbp_seed(uint16_t bpid);
static void ldpaa_dpbp_free(void);
static int ldpaa_dpni_setup(struct ldpaa_eth_priv *priv);
static int ldpaa_dpbp_setup(void);
static int ldpaa_dpni_bind(struct ldpaa_eth_priv *priv);
#endif /* __LDPAA_H */