driver/ldpaa_eth: Add LDPAA Ethernet driver
LDPAA Ethernet driver is a freescale's new ethernet driver based on
Layerscape architecture.
Every ethernet driver controls on DPNI object. Where all DPNIs share
one common DPBP and DPIO object to support Rx and Tx flows.
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
CC: Cristian Sovaiala <cristian.sovaiala@freescale.com>
CC: Bogdan Hamciuc <bogdan.hamciuc@freescale.com>
CC: J. German Rivera <German.Rivera@freescale.com>
[York Sun: s/NetReceive/net_process_received_packet]
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/net/ldpaa_eth/ldpaa_eth.h b/drivers/net/ldpaa_eth/ldpaa_eth.h
new file mode 100644
index 0000000..c7760ef
--- /dev/null
+++ b/drivers/net/ldpaa_eth/ldpaa_eth.h
@@ -0,0 +1,153 @@
+/*
+ * 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;
+ uint32_t tx_conf_fqid;
+ uint16_t tx_flow_id;
+
+ enum ldpaa_eth_type type; /* 1G or 10G ethernet */
+ phy_interface_t enet_if;
+ struct mii_dev *bus;
+ struct phy_device *phydev;
+ int phyaddr;
+
+};
+
+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 */