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-rw-r--r--drivers/net/ethernet/renesas/Kconfig45
-rw-r--r--drivers/net/ethernet/renesas/Makefile10
-rw-r--r--drivers/net/ethernet/renesas/ravb.h1134
-rw-r--r--drivers/net/ethernet/renesas/ravb_main.c3117
-rw-r--r--drivers/net/ethernet/renesas/ravb_ptp.c358
-rw-r--r--drivers/net/ethernet/renesas/sh_eth.c3555
-rw-r--r--drivers/net/ethernet/renesas/sh_eth.h567
7 files changed, 8786 insertions, 0 deletions
diff --git a/drivers/net/ethernet/renesas/Kconfig b/drivers/net/ethernet/renesas/Kconfig
new file mode 100644
index 000000000..8008b2f45
--- /dev/null
+++ b/drivers/net/ethernet/renesas/Kconfig
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Renesas device configuration
+#
+
+config NET_VENDOR_RENESAS
+ bool "Renesas devices"
+ default y
+ help
+ If you have a network (Ethernet) card belonging to this class, say Y.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about Renesas devices. If you say Y, you will be asked
+ for your specific device in the following questions.
+
+if NET_VENDOR_RENESAS
+
+config SH_ETH
+ tristate "Renesas SuperH Ethernet support"
+ depends on ARCH_RENESAS || SUPERH || COMPILE_TEST
+ select CRC32
+ select MII
+ select MDIO_BITBANG
+ select PHYLIB
+ help
+ Renesas SuperH Ethernet device driver.
+ This driver supporting CPUs are:
+ - SH7619, SH7710, SH7712, SH7724, SH7734, SH7763, SH7757,
+ R8A7740, R8A774x, R8A777x and R8A779x.
+
+config RAVB
+ tristate "Renesas Ethernet AVB support"
+ depends on ARCH_RENESAS || COMPILE_TEST
+ depends on PTP_1588_CLOCK_OPTIONAL
+ select CRC32
+ select MII
+ select MDIO_BITBANG
+ select PHYLIB
+ help
+ Renesas Ethernet AVB device driver.
+ This driver supports the following SoCs:
+ - R8A779x.
+
+endif # NET_VENDOR_RENESAS
diff --git a/drivers/net/ethernet/renesas/Makefile b/drivers/net/ethernet/renesas/Makefile
new file mode 100644
index 000000000..f21ab8c02
--- /dev/null
+++ b/drivers/net/ethernet/renesas/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Renesas device drivers.
+#
+
+obj-$(CONFIG_SH_ETH) += sh_eth.o
+
+ravb-objs := ravb_main.o ravb_ptp.o
+
+obj-$(CONFIG_RAVB) += ravb.o
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
new file mode 100644
index 000000000..e0f8276cf
--- /dev/null
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -0,0 +1,1134 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Renesas Ethernet AVB device driver
+ *
+ * Copyright (C) 2014-2015 Renesas Electronics Corporation
+ * Copyright (C) 2015 Renesas Solutions Corp.
+ * Copyright (C) 2015-2016 Cogent Embedded, Inc. <source@cogentembedded.com>
+ *
+ * Based on the SuperH Ethernet driver
+ */
+
+#ifndef __RAVB_H__
+#define __RAVB_H__
+
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mdio-bitbang.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+#include <linux/ptp_clock_kernel.h>
+
+#define BE_TX_RING_SIZE 64 /* TX ring size for Best Effort */
+#define BE_RX_RING_SIZE 1024 /* RX ring size for Best Effort */
+#define NC_TX_RING_SIZE 64 /* TX ring size for Network Control */
+#define NC_RX_RING_SIZE 64 /* RX ring size for Network Control */
+#define BE_TX_RING_MIN 64
+#define BE_RX_RING_MIN 64
+#define BE_TX_RING_MAX 1024
+#define BE_RX_RING_MAX 2048
+
+#define PKT_BUF_SZ 1538
+
+/* Driver's parameters */
+#define RAVB_ALIGN 128
+
+/* Hardware time stamp */
+#define RAVB_TXTSTAMP_VALID 0x00000001 /* TX timestamp valid */
+#define RAVB_TXTSTAMP_ENABLED 0x00000010 /* Enable TX timestamping */
+
+#define RAVB_RXTSTAMP_VALID 0x00000001 /* RX timestamp valid */
+#define RAVB_RXTSTAMP_TYPE 0x00000006 /* RX type mask */
+#define RAVB_RXTSTAMP_TYPE_V2_L2_EVENT 0x00000002
+#define RAVB_RXTSTAMP_TYPE_ALL 0x00000006
+#define RAVB_RXTSTAMP_ENABLED 0x00000010 /* Enable RX timestamping */
+
+enum ravb_reg {
+ /* AVB-DMAC registers */
+ CCC = 0x0000,
+ DBAT = 0x0004,
+ DLR = 0x0008,
+ CSR = 0x000C,
+ CDAR0 = 0x0010,
+ CDAR1 = 0x0014,
+ CDAR2 = 0x0018,
+ CDAR3 = 0x001C,
+ CDAR4 = 0x0020,
+ CDAR5 = 0x0024,
+ CDAR6 = 0x0028,
+ CDAR7 = 0x002C,
+ CDAR8 = 0x0030,
+ CDAR9 = 0x0034,
+ CDAR10 = 0x0038,
+ CDAR11 = 0x003C,
+ CDAR12 = 0x0040,
+ CDAR13 = 0x0044,
+ CDAR14 = 0x0048,
+ CDAR15 = 0x004C,
+ CDAR16 = 0x0050,
+ CDAR17 = 0x0054,
+ CDAR18 = 0x0058,
+ CDAR19 = 0x005C,
+ CDAR20 = 0x0060,
+ CDAR21 = 0x0064,
+ ESR = 0x0088,
+ APSR = 0x008C, /* R-Car Gen3 only */
+ RCR = 0x0090,
+ RQC0 = 0x0094,
+ RQC1 = 0x0098,
+ RQC2 = 0x009C,
+ RQC3 = 0x00A0,
+ RQC4 = 0x00A4,
+ RPC = 0x00B0,
+ RTC = 0x00B4, /* R-Car Gen3 and RZ/G2L only */
+ UFCW = 0x00BC,
+ UFCS = 0x00C0,
+ UFCV0 = 0x00C4,
+ UFCV1 = 0x00C8,
+ UFCV2 = 0x00CC,
+ UFCV3 = 0x00D0,
+ UFCV4 = 0x00D4,
+ UFCD0 = 0x00E0,
+ UFCD1 = 0x00E4,
+ UFCD2 = 0x00E8,
+ UFCD3 = 0x00EC,
+ UFCD4 = 0x00F0,
+ SFO = 0x00FC,
+ SFP0 = 0x0100,
+ SFP1 = 0x0104,
+ SFP2 = 0x0108,
+ SFP3 = 0x010C,
+ SFP4 = 0x0110,
+ SFP5 = 0x0114,
+ SFP6 = 0x0118,
+ SFP7 = 0x011C,
+ SFP8 = 0x0120,
+ SFP9 = 0x0124,
+ SFP10 = 0x0128,
+ SFP11 = 0x012C,
+ SFP12 = 0x0130,
+ SFP13 = 0x0134,
+ SFP14 = 0x0138,
+ SFP15 = 0x013C,
+ SFP16 = 0x0140,
+ SFP17 = 0x0144,
+ SFP18 = 0x0148,
+ SFP19 = 0x014C,
+ SFP20 = 0x0150,
+ SFP21 = 0x0154,
+ SFP22 = 0x0158,
+ SFP23 = 0x015C,
+ SFP24 = 0x0160,
+ SFP25 = 0x0164,
+ SFP26 = 0x0168,
+ SFP27 = 0x016C,
+ SFP28 = 0x0170,
+ SFP29 = 0x0174,
+ SFP30 = 0x0178,
+ SFP31 = 0x017C,
+ SFM0 = 0x01C0,
+ SFM1 = 0x01C4,
+ TGC = 0x0300,
+ TCCR = 0x0304,
+ TSR = 0x0308,
+ TFA0 = 0x0310,
+ TFA1 = 0x0314,
+ TFA2 = 0x0318,
+ CIVR0 = 0x0320,
+ CIVR1 = 0x0324,
+ CDVR0 = 0x0328,
+ CDVR1 = 0x032C,
+ CUL0 = 0x0330,
+ CUL1 = 0x0334,
+ CLL0 = 0x0338,
+ CLL1 = 0x033C,
+ DIC = 0x0350,
+ DIS = 0x0354,
+ EIC = 0x0358,
+ EIS = 0x035C,
+ RIC0 = 0x0360,
+ RIS0 = 0x0364,
+ RIC1 = 0x0368,
+ RIS1 = 0x036C,
+ RIC2 = 0x0370,
+ RIS2 = 0x0374,
+ TIC = 0x0378,
+ TIS = 0x037C,
+ ISS = 0x0380,
+ CIE = 0x0384, /* R-Car Gen3 only */
+ GCCR = 0x0390,
+ GMTT = 0x0394,
+ GPTC = 0x0398,
+ GTI = 0x039C,
+ GTO0 = 0x03A0,
+ GTO1 = 0x03A4,
+ GTO2 = 0x03A8,
+ GIC = 0x03AC,
+ GIS = 0x03B0,
+ GCPT = 0x03B4, /* Documented for R-Car Gen3 only */
+ GCT0 = 0x03B8,
+ GCT1 = 0x03BC,
+ GCT2 = 0x03C0,
+ GIE = 0x03CC, /* R-Car Gen3 only */
+ GID = 0x03D0, /* R-Car Gen3 only */
+ DIL = 0x0440, /* R-Car Gen3 only */
+ RIE0 = 0x0460, /* R-Car Gen3 only */
+ RID0 = 0x0464, /* R-Car Gen3 only */
+ RIE2 = 0x0470, /* R-Car Gen3 only */
+ RID2 = 0x0474, /* R-Car Gen3 only */
+ TIE = 0x0478, /* R-Car Gen3 only */
+ TID = 0x047c, /* R-Car Gen3 only */
+
+ /* E-MAC registers */
+ ECMR = 0x0500,
+ RFLR = 0x0508,
+ ECSR = 0x0510,
+ ECSIPR = 0x0518,
+ PIR = 0x0520,
+ PSR = 0x0528,
+ PIPR = 0x052c,
+ CXR31 = 0x0530, /* RZ/G2L only */
+ CXR35 = 0x0540, /* RZ/G2L only */
+ MPR = 0x0558,
+ PFTCR = 0x055c,
+ PFRCR = 0x0560,
+ GECMR = 0x05b0,
+ MAHR = 0x05c0,
+ MALR = 0x05c8,
+ TROCR = 0x0700, /* R-Car Gen3 and RZ/G2L only */
+ CXR41 = 0x0708, /* RZ/G2L only */
+ CXR42 = 0x0710, /* RZ/G2L only */
+ CEFCR = 0x0740,
+ FRECR = 0x0748,
+ TSFRCR = 0x0750,
+ TLFRCR = 0x0758,
+ RFCR = 0x0760,
+ MAFCR = 0x0778,
+ CSR0 = 0x0800, /* RZ/G2L only */
+};
+
+
+/* Register bits of the Ethernet AVB */
+/* CCC */
+enum CCC_BIT {
+ CCC_OPC = 0x00000003,
+ CCC_OPC_RESET = 0x00000000,
+ CCC_OPC_CONFIG = 0x00000001,
+ CCC_OPC_OPERATION = 0x00000002,
+ CCC_GAC = 0x00000080,
+ CCC_DTSR = 0x00000100,
+ CCC_CSEL = 0x00030000,
+ CCC_CSEL_HPB = 0x00010000,
+ CCC_CSEL_ETH_TX = 0x00020000,
+ CCC_CSEL_GMII_REF = 0x00030000,
+ CCC_LBME = 0x01000000,
+};
+
+/* CSR */
+enum CSR_BIT {
+ CSR_OPS = 0x0000000F,
+ CSR_OPS_RESET = 0x00000001,
+ CSR_OPS_CONFIG = 0x00000002,
+ CSR_OPS_OPERATION = 0x00000004,
+ CSR_OPS_STANDBY = 0x00000008, /* Documented for R-Car Gen3 only */
+ CSR_DTS = 0x00000100,
+ CSR_TPO0 = 0x00010000,
+ CSR_TPO1 = 0x00020000,
+ CSR_TPO2 = 0x00040000,
+ CSR_TPO3 = 0x00080000,
+ CSR_RPO = 0x00100000,
+};
+
+/* ESR */
+enum ESR_BIT {
+ ESR_EQN = 0x0000001F,
+ ESR_ET = 0x00000F00,
+ ESR_EIL = 0x00001000,
+};
+
+/* APSR (R-Car Gen3 only) */
+enum APSR_BIT {
+ APSR_MEMS = 0x00000002, /* Undocumented */
+ APSR_CMSW = 0x00000010,
+ APSR_RDM = 0x00002000,
+ APSR_TDM = 0x00004000,
+};
+
+/* RCR */
+enum RCR_BIT {
+ RCR_EFFS = 0x00000001,
+ RCR_ENCF = 0x00000002,
+ RCR_ESF = 0x0000000C,
+ RCR_ETS0 = 0x00000010,
+ RCR_ETS2 = 0x00000020,
+ RCR_RFCL = 0x1FFF0000,
+};
+
+/* RQC0/1/2/3/4 */
+enum RQC_BIT {
+ RQC_RSM0 = 0x00000003,
+ RQC_UFCC0 = 0x00000030,
+ RQC_RSM1 = 0x00000300,
+ RQC_UFCC1 = 0x00003000,
+ RQC_RSM2 = 0x00030000,
+ RQC_UFCC2 = 0x00300000,
+ RQC_RSM3 = 0x03000000,
+ RQC_UFCC3 = 0x30000000,
+};
+
+/* RPC */
+enum RPC_BIT {
+ RPC_PCNT = 0x00000700,
+ RPC_DCNT = 0x00FF0000,
+};
+
+/* UFCW */
+enum UFCW_BIT {
+ UFCW_WL0 = 0x0000003F,
+ UFCW_WL1 = 0x00003F00,
+ UFCW_WL2 = 0x003F0000,
+ UFCW_WL3 = 0x3F000000,
+};
+
+/* UFCS */
+enum UFCS_BIT {
+ UFCS_SL0 = 0x0000003F,
+ UFCS_SL1 = 0x00003F00,
+ UFCS_SL2 = 0x003F0000,
+ UFCS_SL3 = 0x3F000000,
+};
+
+/* UFCV0/1/2/3/4 */
+enum UFCV_BIT {
+ UFCV_CV0 = 0x0000003F,
+ UFCV_CV1 = 0x00003F00,
+ UFCV_CV2 = 0x003F0000,
+ UFCV_CV3 = 0x3F000000,
+};
+
+/* UFCD0/1/2/3/4 */
+enum UFCD_BIT {
+ UFCD_DV0 = 0x0000003F,
+ UFCD_DV1 = 0x00003F00,
+ UFCD_DV2 = 0x003F0000,
+ UFCD_DV3 = 0x3F000000,
+};
+
+/* SFO */
+enum SFO_BIT {
+ SFO_FBP = 0x0000003F,
+};
+
+/* RTC */
+enum RTC_BIT {
+ RTC_MFL0 = 0x00000FFF,
+ RTC_MFL1 = 0x0FFF0000,
+};
+
+/* TGC */
+enum TGC_BIT {
+ TGC_TSM0 = 0x00000001,
+ TGC_TSM1 = 0x00000002,
+ TGC_TSM2 = 0x00000004,
+ TGC_TSM3 = 0x00000008,
+ TGC_TQP = 0x00000030,
+ TGC_TQP_NONAVB = 0x00000000,
+ TGC_TQP_AVBMODE1 = 0x00000010,
+ TGC_TQP_AVBMODE2 = 0x00000030,
+ TGC_TBD0 = 0x00000300,
+ TGC_TBD1 = 0x00003000,
+ TGC_TBD2 = 0x00030000,
+ TGC_TBD3 = 0x00300000,
+};
+
+/* TCCR */
+enum TCCR_BIT {
+ TCCR_TSRQ0 = 0x00000001,
+ TCCR_TSRQ1 = 0x00000002,
+ TCCR_TSRQ2 = 0x00000004,
+ TCCR_TSRQ3 = 0x00000008,
+ TCCR_TFEN = 0x00000100,
+ TCCR_TFR = 0x00000200,
+};
+
+/* TSR */
+enum TSR_BIT {
+ TSR_CCS0 = 0x00000003,
+ TSR_CCS1 = 0x0000000C,
+ TSR_TFFL = 0x00000700,
+};
+
+/* TFA2 */
+enum TFA2_BIT {
+ TFA2_TSV = 0x0000FFFF,
+ TFA2_TST = 0x03FF0000,
+};
+
+/* DIC */
+enum DIC_BIT {
+ DIC_DPE1 = 0x00000002,
+ DIC_DPE2 = 0x00000004,
+ DIC_DPE3 = 0x00000008,
+ DIC_DPE4 = 0x00000010,
+ DIC_DPE5 = 0x00000020,
+ DIC_DPE6 = 0x00000040,
+ DIC_DPE7 = 0x00000080,
+ DIC_DPE8 = 0x00000100,
+ DIC_DPE9 = 0x00000200,
+ DIC_DPE10 = 0x00000400,
+ DIC_DPE11 = 0x00000800,
+ DIC_DPE12 = 0x00001000,
+ DIC_DPE13 = 0x00002000,
+ DIC_DPE14 = 0x00004000,
+ DIC_DPE15 = 0x00008000,
+};
+
+/* DIS */
+enum DIS_BIT {
+ DIS_DPF1 = 0x00000002,
+ DIS_DPF2 = 0x00000004,
+ DIS_DPF3 = 0x00000008,
+ DIS_DPF4 = 0x00000010,
+ DIS_DPF5 = 0x00000020,
+ DIS_DPF6 = 0x00000040,
+ DIS_DPF7 = 0x00000080,
+ DIS_DPF8 = 0x00000100,
+ DIS_DPF9 = 0x00000200,
+ DIS_DPF10 = 0x00000400,
+ DIS_DPF11 = 0x00000800,
+ DIS_DPF12 = 0x00001000,
+ DIS_DPF13 = 0x00002000,
+ DIS_DPF14 = 0x00004000,
+ DIS_DPF15 = 0x00008000,
+};
+
+/* EIC */
+enum EIC_BIT {
+ EIC_MREE = 0x00000001,
+ EIC_MTEE = 0x00000002,
+ EIC_QEE = 0x00000004,
+ EIC_SEE = 0x00000008,
+ EIC_CLLE0 = 0x00000010,
+ EIC_CLLE1 = 0x00000020,
+ EIC_CULE0 = 0x00000040,
+ EIC_CULE1 = 0x00000080,
+ EIC_TFFE = 0x00000100,
+};
+
+/* EIS */
+enum EIS_BIT {
+ EIS_MREF = 0x00000001,
+ EIS_MTEF = 0x00000002,
+ EIS_QEF = 0x00000004,
+ EIS_SEF = 0x00000008,
+ EIS_CLLF0 = 0x00000010,
+ EIS_CLLF1 = 0x00000020,
+ EIS_CULF0 = 0x00000040,
+ EIS_CULF1 = 0x00000080,
+ EIS_TFFF = 0x00000100,
+ EIS_QFS = 0x00010000,
+ EIS_RESERVED = (GENMASK(31, 17) | GENMASK(15, 11)),
+};
+
+/* RIC0 */
+enum RIC0_BIT {
+ RIC0_FRE0 = 0x00000001,
+ RIC0_FRE1 = 0x00000002,
+ RIC0_FRE2 = 0x00000004,
+ RIC0_FRE3 = 0x00000008,
+ RIC0_FRE4 = 0x00000010,
+ RIC0_FRE5 = 0x00000020,
+ RIC0_FRE6 = 0x00000040,
+ RIC0_FRE7 = 0x00000080,
+ RIC0_FRE8 = 0x00000100,
+ RIC0_FRE9 = 0x00000200,
+ RIC0_FRE10 = 0x00000400,
+ RIC0_FRE11 = 0x00000800,
+ RIC0_FRE12 = 0x00001000,
+ RIC0_FRE13 = 0x00002000,
+ RIC0_FRE14 = 0x00004000,
+ RIC0_FRE15 = 0x00008000,
+ RIC0_FRE16 = 0x00010000,
+ RIC0_FRE17 = 0x00020000,
+};
+
+/* RIC0 */
+enum RIS0_BIT {
+ RIS0_FRF0 = 0x00000001,
+ RIS0_FRF1 = 0x00000002,
+ RIS0_FRF2 = 0x00000004,
+ RIS0_FRF3 = 0x00000008,
+ RIS0_FRF4 = 0x00000010,
+ RIS0_FRF5 = 0x00000020,
+ RIS0_FRF6 = 0x00000040,
+ RIS0_FRF7 = 0x00000080,
+ RIS0_FRF8 = 0x00000100,
+ RIS0_FRF9 = 0x00000200,
+ RIS0_FRF10 = 0x00000400,
+ RIS0_FRF11 = 0x00000800,
+ RIS0_FRF12 = 0x00001000,
+ RIS0_FRF13 = 0x00002000,
+ RIS0_FRF14 = 0x00004000,
+ RIS0_FRF15 = 0x00008000,
+ RIS0_FRF16 = 0x00010000,
+ RIS0_FRF17 = 0x00020000,
+ RIS0_RESERVED = GENMASK(31, 18),
+};
+
+/* RIC1 */
+enum RIC1_BIT {
+ RIC1_RFWE = 0x80000000,
+};
+
+/* RIS1 */
+enum RIS1_BIT {
+ RIS1_RFWF = 0x80000000,
+};
+
+/* RIC2 */
+enum RIC2_BIT {
+ RIC2_QFE0 = 0x00000001,
+ RIC2_QFE1 = 0x00000002,
+ RIC2_QFE2 = 0x00000004,
+ RIC2_QFE3 = 0x00000008,
+ RIC2_QFE4 = 0x00000010,
+ RIC2_QFE5 = 0x00000020,
+ RIC2_QFE6 = 0x00000040,
+ RIC2_QFE7 = 0x00000080,
+ RIC2_QFE8 = 0x00000100,
+ RIC2_QFE9 = 0x00000200,
+ RIC2_QFE10 = 0x00000400,
+ RIC2_QFE11 = 0x00000800,
+ RIC2_QFE12 = 0x00001000,
+ RIC2_QFE13 = 0x00002000,
+ RIC2_QFE14 = 0x00004000,
+ RIC2_QFE15 = 0x00008000,
+ RIC2_QFE16 = 0x00010000,
+ RIC2_QFE17 = 0x00020000,
+ RIC2_RFFE = 0x80000000,
+};
+
+/* RIS2 */
+enum RIS2_BIT {
+ RIS2_QFF0 = 0x00000001,
+ RIS2_QFF1 = 0x00000002,
+ RIS2_QFF2 = 0x00000004,
+ RIS2_QFF3 = 0x00000008,
+ RIS2_QFF4 = 0x00000010,
+ RIS2_QFF5 = 0x00000020,
+ RIS2_QFF6 = 0x00000040,
+ RIS2_QFF7 = 0x00000080,
+ RIS2_QFF8 = 0x00000100,
+ RIS2_QFF9 = 0x00000200,
+ RIS2_QFF10 = 0x00000400,
+ RIS2_QFF11 = 0x00000800,
+ RIS2_QFF12 = 0x00001000,
+ RIS2_QFF13 = 0x00002000,
+ RIS2_QFF14 = 0x00004000,
+ RIS2_QFF15 = 0x00008000,
+ RIS2_QFF16 = 0x00010000,
+ RIS2_QFF17 = 0x00020000,
+ RIS2_RFFF = 0x80000000,
+ RIS2_RESERVED = GENMASK(30, 18),
+};
+
+/* TIC */
+enum TIC_BIT {
+ TIC_FTE0 = 0x00000001, /* Documented for R-Car Gen3 only */
+ TIC_FTE1 = 0x00000002, /* Documented for R-Car Gen3 only */
+ TIC_TFUE = 0x00000100,
+ TIC_TFWE = 0x00000200,
+};
+
+/* TIS */
+enum TIS_BIT {
+ TIS_FTF0 = 0x00000001, /* Documented for R-Car Gen3 only */
+ TIS_FTF1 = 0x00000002, /* Documented for R-Car Gen3 only */
+ TIS_TFUF = 0x00000100,
+ TIS_TFWF = 0x00000200,
+ TIS_RESERVED = (GENMASK(31, 20) | GENMASK(15, 12) | GENMASK(7, 4))
+};
+
+/* ISS */
+enum ISS_BIT {
+ ISS_FRS = 0x00000001, /* Documented for R-Car Gen3 only */
+ ISS_FTS = 0x00000004, /* Documented for R-Car Gen3 only */
+ ISS_ES = 0x00000040,
+ ISS_MS = 0x00000080,
+ ISS_TFUS = 0x00000100,
+ ISS_TFWS = 0x00000200,
+ ISS_RFWS = 0x00001000,
+ ISS_CGIS = 0x00002000,
+ ISS_DPS1 = 0x00020000,
+ ISS_DPS2 = 0x00040000,
+ ISS_DPS3 = 0x00080000,
+ ISS_DPS4 = 0x00100000,
+ ISS_DPS5 = 0x00200000,
+ ISS_DPS6 = 0x00400000,
+ ISS_DPS7 = 0x00800000,
+ ISS_DPS8 = 0x01000000,
+ ISS_DPS9 = 0x02000000,
+ ISS_DPS10 = 0x04000000,
+ ISS_DPS11 = 0x08000000,
+ ISS_DPS12 = 0x10000000,
+ ISS_DPS13 = 0x20000000,
+ ISS_DPS14 = 0x40000000,
+ ISS_DPS15 = 0x80000000,
+};
+
+/* CIE (R-Car Gen3 only) */
+enum CIE_BIT {
+ CIE_CRIE = 0x00000001,
+ CIE_CTIE = 0x00000100,
+ CIE_RQFM = 0x00010000,
+ CIE_CL0M = 0x00020000,
+ CIE_RFWL = 0x00040000,
+ CIE_RFFL = 0x00080000,
+};
+
+/* GCCR */
+enum GCCR_BIT {
+ GCCR_TCR = 0x00000003,
+ GCCR_TCR_NOREQ = 0x00000000, /* No request */
+ GCCR_TCR_RESET = 0x00000001, /* gPTP/AVTP presentation timer reset */
+ GCCR_TCR_CAPTURE = 0x00000003, /* Capture value set in GCCR.TCSS */
+ GCCR_LTO = 0x00000004,
+ GCCR_LTI = 0x00000008,
+ GCCR_LPTC = 0x00000010,
+ GCCR_LMTT = 0x00000020,
+ GCCR_TCSS = 0x00000300,
+ GCCR_TCSS_GPTP = 0x00000000, /* gPTP timer value */
+ GCCR_TCSS_ADJGPTP = 0x00000100, /* Adjusted gPTP timer value */
+ GCCR_TCSS_AVTP = 0x00000200, /* AVTP presentation time value */
+};
+
+/* GTI */
+enum GTI_BIT {
+ GTI_TIV = 0x0FFFFFFF,
+};
+
+#define GTI_TIV_MAX GTI_TIV
+#define GTI_TIV_MIN 0x20
+
+/* GIC */
+enum GIC_BIT {
+ GIC_PTCE = 0x00000001, /* Documented for R-Car Gen3 only */
+ GIC_PTME = 0x00000004,
+};
+
+/* GIS */
+enum GIS_BIT {
+ GIS_PTCF = 0x00000001, /* Documented for R-Car Gen3 only */
+ GIS_PTMF = 0x00000004,
+ GIS_RESERVED = GENMASK(15, 10),
+};
+
+/* GIE (R-Car Gen3 only) */
+enum GIE_BIT {
+ GIE_PTCS = 0x00000001,
+ GIE_PTOS = 0x00000002,
+ GIE_PTMS0 = 0x00000004,
+ GIE_PTMS1 = 0x00000008,
+ GIE_PTMS2 = 0x00000010,
+ GIE_PTMS3 = 0x00000020,
+ GIE_PTMS4 = 0x00000040,
+ GIE_PTMS5 = 0x00000080,
+ GIE_PTMS6 = 0x00000100,
+ GIE_PTMS7 = 0x00000200,
+ GIE_ATCS0 = 0x00010000,
+ GIE_ATCS1 = 0x00020000,
+ GIE_ATCS2 = 0x00040000,
+ GIE_ATCS3 = 0x00080000,
+ GIE_ATCS4 = 0x00100000,
+ GIE_ATCS5 = 0x00200000,
+ GIE_ATCS6 = 0x00400000,
+ GIE_ATCS7 = 0x00800000,
+ GIE_ATCS8 = 0x01000000,
+ GIE_ATCS9 = 0x02000000,
+ GIE_ATCS10 = 0x04000000,
+ GIE_ATCS11 = 0x08000000,
+ GIE_ATCS12 = 0x10000000,
+ GIE_ATCS13 = 0x20000000,
+ GIE_ATCS14 = 0x40000000,
+ GIE_ATCS15 = 0x80000000,
+};
+
+/* GID (R-Car Gen3 only) */
+enum GID_BIT {
+ GID_PTCD = 0x00000001,
+ GID_PTOD = 0x00000002,
+ GID_PTMD0 = 0x00000004,
+ GID_PTMD1 = 0x00000008,
+ GID_PTMD2 = 0x00000010,
+ GID_PTMD3 = 0x00000020,
+ GID_PTMD4 = 0x00000040,
+ GID_PTMD5 = 0x00000080,
+ GID_PTMD6 = 0x00000100,
+ GID_PTMD7 = 0x00000200,
+ GID_ATCD0 = 0x00010000,
+ GID_ATCD1 = 0x00020000,
+ GID_ATCD2 = 0x00040000,
+ GID_ATCD3 = 0x00080000,
+ GID_ATCD4 = 0x00100000,
+ GID_ATCD5 = 0x00200000,
+ GID_ATCD6 = 0x00400000,
+ GID_ATCD7 = 0x00800000,
+ GID_ATCD8 = 0x01000000,
+ GID_ATCD9 = 0x02000000,
+ GID_ATCD10 = 0x04000000,
+ GID_ATCD11 = 0x08000000,
+ GID_ATCD12 = 0x10000000,
+ GID_ATCD13 = 0x20000000,
+ GID_ATCD14 = 0x40000000,
+ GID_ATCD15 = 0x80000000,
+};
+
+/* RIE0 (R-Car Gen3 only) */
+enum RIE0_BIT {
+ RIE0_FRS0 = 0x00000001,
+ RIE0_FRS1 = 0x00000002,
+ RIE0_FRS2 = 0x00000004,
+ RIE0_FRS3 = 0x00000008,
+ RIE0_FRS4 = 0x00000010,
+ RIE0_FRS5 = 0x00000020,
+ RIE0_FRS6 = 0x00000040,
+ RIE0_FRS7 = 0x00000080,
+ RIE0_FRS8 = 0x00000100,
+ RIE0_FRS9 = 0x00000200,
+ RIE0_FRS10 = 0x00000400,
+ RIE0_FRS11 = 0x00000800,
+ RIE0_FRS12 = 0x00001000,
+ RIE0_FRS13 = 0x00002000,
+ RIE0_FRS14 = 0x00004000,
+ RIE0_FRS15 = 0x00008000,
+ RIE0_FRS16 = 0x00010000,
+ RIE0_FRS17 = 0x00020000,
+};
+
+/* RID0 (R-Car Gen3 only) */
+enum RID0_BIT {
+ RID0_FRD0 = 0x00000001,
+ RID0_FRD1 = 0x00000002,
+ RID0_FRD2 = 0x00000004,
+ RID0_FRD3 = 0x00000008,
+ RID0_FRD4 = 0x00000010,
+ RID0_FRD5 = 0x00000020,
+ RID0_FRD6 = 0x00000040,
+ RID0_FRD7 = 0x00000080,
+ RID0_FRD8 = 0x00000100,
+ RID0_FRD9 = 0x00000200,
+ RID0_FRD10 = 0x00000400,
+ RID0_FRD11 = 0x00000800,
+ RID0_FRD12 = 0x00001000,
+ RID0_FRD13 = 0x00002000,
+ RID0_FRD14 = 0x00004000,
+ RID0_FRD15 = 0x00008000,
+ RID0_FRD16 = 0x00010000,
+ RID0_FRD17 = 0x00020000,
+};
+
+/* RIE2 (R-Car Gen3 only) */
+enum RIE2_BIT {
+ RIE2_QFS0 = 0x00000001,
+ RIE2_QFS1 = 0x00000002,
+ RIE2_QFS2 = 0x00000004,
+ RIE2_QFS3 = 0x00000008,
+ RIE2_QFS4 = 0x00000010,
+ RIE2_QFS5 = 0x00000020,
+ RIE2_QFS6 = 0x00000040,
+ RIE2_QFS7 = 0x00000080,
+ RIE2_QFS8 = 0x00000100,
+ RIE2_QFS9 = 0x00000200,
+ RIE2_QFS10 = 0x00000400,
+ RIE2_QFS11 = 0x00000800,
+ RIE2_QFS12 = 0x00001000,
+ RIE2_QFS13 = 0x00002000,
+ RIE2_QFS14 = 0x00004000,
+ RIE2_QFS15 = 0x00008000,
+ RIE2_QFS16 = 0x00010000,
+ RIE2_QFS17 = 0x00020000,
+ RIE2_RFFS = 0x80000000,
+};
+
+/* RID2 (R-Car Gen3 only) */
+enum RID2_BIT {
+ RID2_QFD0 = 0x00000001,
+ RID2_QFD1 = 0x00000002,
+ RID2_QFD2 = 0x00000004,
+ RID2_QFD3 = 0x00000008,
+ RID2_QFD4 = 0x00000010,
+ RID2_QFD5 = 0x00000020,
+ RID2_QFD6 = 0x00000040,
+ RID2_QFD7 = 0x00000080,
+ RID2_QFD8 = 0x00000100,
+ RID2_QFD9 = 0x00000200,
+ RID2_QFD10 = 0x00000400,
+ RID2_QFD11 = 0x00000800,
+ RID2_QFD12 = 0x00001000,
+ RID2_QFD13 = 0x00002000,
+ RID2_QFD14 = 0x00004000,
+ RID2_QFD15 = 0x00008000,
+ RID2_QFD16 = 0x00010000,
+ RID2_QFD17 = 0x00020000,
+ RID2_RFFD = 0x80000000,
+};
+
+/* TIE (R-Car Gen3 only) */
+enum TIE_BIT {
+ TIE_FTS0 = 0x00000001,
+ TIE_FTS1 = 0x00000002,
+ TIE_FTS2 = 0x00000004,
+ TIE_FTS3 = 0x00000008,
+ TIE_TFUS = 0x00000100,
+ TIE_TFWS = 0x00000200,
+ TIE_MFUS = 0x00000400,
+ TIE_MFWS = 0x00000800,
+ TIE_TDPS0 = 0x00010000,
+ TIE_TDPS1 = 0x00020000,
+ TIE_TDPS2 = 0x00040000,
+ TIE_TDPS3 = 0x00080000,
+};
+
+/* TID (R-Car Gen3 only) */
+enum TID_BIT {
+ TID_FTD0 = 0x00000001,
+ TID_FTD1 = 0x00000002,
+ TID_FTD2 = 0x00000004,
+ TID_FTD3 = 0x00000008,
+ TID_TFUD = 0x00000100,
+ TID_TFWD = 0x00000200,
+ TID_MFUD = 0x00000400,
+ TID_MFWD = 0x00000800,
+ TID_TDPD0 = 0x00010000,
+ TID_TDPD1 = 0x00020000,
+ TID_TDPD2 = 0x00040000,
+ TID_TDPD3 = 0x00080000,
+};
+
+/* ECMR */
+enum ECMR_BIT {
+ ECMR_PRM = 0x00000001,
+ ECMR_DM = 0x00000002,
+ ECMR_TE = 0x00000020,
+ ECMR_RE = 0x00000040,
+ ECMR_MPDE = 0x00000200,
+ ECMR_TXF = 0x00010000, /* Documented for R-Car Gen3 only */
+ ECMR_RXF = 0x00020000,
+ ECMR_PFR = 0x00040000,
+ ECMR_ZPF = 0x00080000, /* Documented for R-Car Gen3 and RZ/G2L */
+ ECMR_RZPF = 0x00100000,
+ ECMR_DPAD = 0x00200000,
+ ECMR_RCSC = 0x00800000,
+ ECMR_RCPT = 0x02000000, /* Documented for RZ/G2L only */
+ ECMR_TRCCM = 0x04000000,
+};
+
+/* ECSR */
+enum ECSR_BIT {
+ ECSR_ICD = 0x00000001,
+ ECSR_MPD = 0x00000002,
+ ECSR_LCHNG = 0x00000004,
+ ECSR_PHYI = 0x00000008,
+ ECSR_PFRI = 0x00000010, /* Documented for R-Car Gen3 and RZ/G2L */
+};
+
+/* ECSIPR */
+enum ECSIPR_BIT {
+ ECSIPR_ICDIP = 0x00000001,
+ ECSIPR_MPDIP = 0x00000002,
+ ECSIPR_LCHNGIP = 0x00000004,
+};
+
+/* PIR */
+enum PIR_BIT {
+ PIR_MDC = 0x00000001,
+ PIR_MMD = 0x00000002,
+ PIR_MDO = 0x00000004,
+ PIR_MDI = 0x00000008,
+};
+
+/* PSR */
+enum PSR_BIT {
+ PSR_LMON = 0x00000001,
+};
+
+/* PIPR */
+enum PIPR_BIT {
+ PIPR_PHYIP = 0x00000001,
+};
+
+/* MPR */
+enum MPR_BIT {
+ MPR_MP = 0x0000ffff,
+};
+
+/* GECMR */
+enum GECMR_BIT {
+ GECMR_SPEED = 0x00000001,
+ GECMR_SPEED_100 = 0x00000000,
+ GECMR_SPEED_1000 = 0x00000001,
+ GBETH_GECMR_SPEED = 0x00000030,
+ GBETH_GECMR_SPEED_10 = 0x00000000,
+ GBETH_GECMR_SPEED_100 = 0x00000010,
+ GBETH_GECMR_SPEED_1000 = 0x00000020,
+};
+
+/* The Ethernet AVB descriptor definitions. */
+struct ravb_desc {
+ __le16 ds; /* Descriptor size */
+ u8 cc; /* Content control MSBs (reserved) */
+ u8 die_dt; /* Descriptor interrupt enable and type */
+ __le32 dptr; /* Descriptor pointer */
+};
+
+#define DPTR_ALIGN 4 /* Required descriptor pointer alignment */
+
+enum DIE_DT {
+ /* Frame data */
+ DT_FMID = 0x40,
+ DT_FSTART = 0x50,
+ DT_FEND = 0x60,
+ DT_FSINGLE = 0x70,
+ /* Chain control */
+ DT_LINK = 0x80,
+ DT_LINKFIX = 0x90,
+ DT_EOS = 0xa0,
+ /* HW/SW arbitration */
+ DT_FEMPTY = 0xc0,
+ DT_FEMPTY_IS = 0xd0,
+ DT_FEMPTY_IC = 0xe0,
+ DT_FEMPTY_ND = 0xf0,
+ DT_LEMPTY = 0x20,
+ DT_EEMPTY = 0x30,
+};
+
+struct ravb_rx_desc {
+ __le16 ds_cc; /* Descriptor size and content control LSBs */
+ u8 msc; /* MAC status code */
+ u8 die_dt; /* Descriptor interrupt enable and type */
+ __le32 dptr; /* Descpriptor pointer */
+};
+
+struct ravb_ex_rx_desc {
+ __le16 ds_cc; /* Descriptor size and content control lower bits */
+ u8 msc; /* MAC status code */
+ u8 die_dt; /* Descriptor interrupt enable and type */
+ __le32 dptr; /* Descpriptor pointer */
+ __le32 ts_n; /* Timestampe nsec */
+ __le32 ts_sl; /* Timestamp low */
+ __le16 ts_sh; /* Timestamp high */
+ __le16 res; /* Reserved bits */
+};
+
+enum RX_DS_CC_BIT {
+ RX_DS = 0x0fff, /* Data size */
+ RX_TR = 0x1000, /* Truncation indication */
+ RX_EI = 0x2000, /* Error indication */
+ RX_PS = 0xc000, /* Padding selection */
+};
+
+/* E-MAC status code */
+enum MSC_BIT {
+ MSC_CRC = 0x01, /* Frame CRC error */
+ MSC_RFE = 0x02, /* Frame reception error (flagged by PHY) */
+ MSC_RTSF = 0x04, /* Frame length error (frame too short) */
+ MSC_RTLF = 0x08, /* Frame length error (frame too long) */
+ MSC_FRE = 0x10, /* Fraction error (not a multiple of 8 bits) */
+ MSC_CRL = 0x20, /* Carrier lost */
+ MSC_CEEF = 0x40, /* Carrier extension error */
+ MSC_MC = 0x80, /* Multicast frame reception */
+};
+
+struct ravb_tx_desc {
+ __le16 ds_tagl; /* Descriptor size and frame tag LSBs */
+ u8 tagh_tsr; /* Frame tag MSBs and timestamp storage request bit */
+ u8 die_dt; /* Descriptor interrupt enable and type */
+ __le32 dptr; /* Descpriptor pointer */
+};
+
+enum TX_DS_TAGL_BIT {
+ TX_DS = 0x0fff, /* Data size */
+ TX_TAGL = 0xf000, /* Frame tag LSBs */
+};
+
+enum TX_TAGH_TSR_BIT {
+ TX_TAGH = 0x3f, /* Frame tag MSBs */
+ TX_TSR = 0x40, /* Timestamp storage request */
+};
+enum RAVB_QUEUE {
+ RAVB_BE = 0, /* Best Effort Queue */
+ RAVB_NC, /* Network Control Queue */
+};
+
+enum CXR31_BIT {
+ CXR31_SEL_LINK0 = 0x00000001,
+ CXR31_SEL_LINK1 = 0x00000008,
+};
+
+enum CXR35_BIT {
+ CXR35_SEL_XMII = 0x00000003,
+ CXR35_SEL_XMII_RGMII = 0x00000000,
+ CXR35_SEL_XMII_MII = 0x00000002,
+ CXR35_HALFCYC_CLKSW = 0xffff0000,
+};
+
+enum CSR0_BIT {
+ CSR0_TPE = 0x00000010,
+ CSR0_RPE = 0x00000020,
+};
+
+#define DBAT_ENTRY_NUM 22
+#define RX_QUEUE_OFFSET 4
+#define NUM_RX_QUEUE 2
+#define NUM_TX_QUEUE 2
+
+#define RX_BUF_SZ (2048 - ETH_FCS_LEN + sizeof(__sum16))
+
+#define GBETH_RX_BUFF_MAX 8192
+#define GBETH_RX_DESC_DATA_SIZE 4080
+
+struct ravb_tstamp_skb {
+ struct list_head list;
+ struct sk_buff *skb;
+ u16 tag;
+};
+
+struct ravb_ptp_perout {
+ u32 target;
+ u32 period;
+};
+
+#define N_EXT_TS 1
+#define N_PER_OUT 1
+
+struct ravb_ptp {
+ struct ptp_clock *clock;
+ struct ptp_clock_info info;
+ u32 default_addend;
+ u32 current_addend;
+ int extts[N_EXT_TS];
+ struct ravb_ptp_perout perout[N_PER_OUT];
+};
+
+struct ravb_hw_info {
+ void (*rx_ring_free)(struct net_device *ndev, int q);
+ void (*rx_ring_format)(struct net_device *ndev, int q);
+ void *(*alloc_rx_desc)(struct net_device *ndev, int q);
+ bool (*receive)(struct net_device *ndev, int *quota, int q);
+ void (*set_rate)(struct net_device *ndev);
+ int (*set_feature)(struct net_device *ndev, netdev_features_t features);
+ int (*dmac_init)(struct net_device *ndev);
+ void (*emac_init)(struct net_device *ndev);
+ const char (*gstrings_stats)[ETH_GSTRING_LEN];
+ size_t gstrings_size;
+ netdev_features_t net_hw_features;
+ netdev_features_t net_features;
+ int stats_len;
+ size_t max_rx_len;
+ u32 tccr_mask;
+ u32 rx_max_buf_size;
+ unsigned aligned_tx: 1;
+
+ /* hardware features */
+ unsigned internal_delay:1; /* AVB-DMAC has internal delays */
+ unsigned tx_counters:1; /* E-MAC has TX counters */
+ unsigned carrier_counters:1; /* E-MAC has carrier counters */
+ unsigned multi_irqs:1; /* AVB-DMAC and E-MAC has multiple irqs */
+ unsigned irq_en_dis:1; /* Has separate irq enable and disable regs */
+ unsigned err_mgmt_irqs:1; /* Line1 (Err) and Line2 (Mgmt) irqs are separate */
+ unsigned gptp:1; /* AVB-DMAC has gPTP support */
+ unsigned ccc_gac:1; /* AVB-DMAC has gPTP support active in config mode */
+ unsigned gptp_ref_clk:1; /* gPTP has separate reference clock */
+ unsigned nc_queues:1; /* AVB-DMAC has RX and TX NC queues */
+ unsigned magic_pkt:1; /* E-MAC supports magic packet detection */
+ unsigned half_duplex:1; /* E-MAC supports half duplex mode */
+};
+
+struct ravb_private {
+ struct net_device *ndev;
+ struct platform_device *pdev;
+ void __iomem *addr;
+ struct clk *clk;
+ struct clk *refclk;
+ struct clk *gptp_clk;
+ struct mdiobb_ctrl mdiobb;
+ u32 num_rx_ring[NUM_RX_QUEUE];
+ u32 num_tx_ring[NUM_TX_QUEUE];
+ u32 desc_bat_size;
+ dma_addr_t desc_bat_dma;
+ struct ravb_desc *desc_bat;
+ dma_addr_t rx_desc_dma[NUM_RX_QUEUE];
+ dma_addr_t tx_desc_dma[NUM_TX_QUEUE];
+ struct ravb_rx_desc *gbeth_rx_ring;
+ struct ravb_ex_rx_desc *rx_ring[NUM_RX_QUEUE];
+ struct ravb_tx_desc *tx_ring[NUM_TX_QUEUE];
+ void *tx_align[NUM_TX_QUEUE];
+ struct sk_buff *rx_1st_skb;
+ struct sk_buff **rx_skb[NUM_RX_QUEUE];
+ struct sk_buff **tx_skb[NUM_TX_QUEUE];
+ u32 rx_over_errors;
+ u32 rx_fifo_errors;
+ struct net_device_stats stats[NUM_RX_QUEUE];
+ u32 tstamp_tx_ctrl;
+ u32 tstamp_rx_ctrl;
+ struct list_head ts_skb_list;
+ u32 ts_skb_tag;
+ struct ravb_ptp ptp;
+ spinlock_t lock; /* Register access lock */
+ u32 cur_rx[NUM_RX_QUEUE]; /* Consumer ring indices */
+ u32 dirty_rx[NUM_RX_QUEUE]; /* Producer ring indices */
+ u32 cur_tx[NUM_TX_QUEUE];
+ u32 dirty_tx[NUM_TX_QUEUE];
+ struct napi_struct napi[NUM_RX_QUEUE];
+ struct work_struct work;
+ /* MII transceiver section. */
+ struct mii_bus *mii_bus; /* MDIO bus control */
+ int link;
+ phy_interface_t phy_interface;
+ int msg_enable;
+ int speed;
+ int emac_irq;
+ int erra_irq;
+ int mgmta_irq;
+ int rx_irqs[NUM_RX_QUEUE];
+ int tx_irqs[NUM_TX_QUEUE];
+
+ unsigned no_avb_link:1;
+ unsigned avb_link_active_low:1;
+ unsigned wol_enabled:1;
+ unsigned rxcidm:1; /* RX Clock Internal Delay Mode */
+ unsigned txcidm:1; /* TX Clock Internal Delay Mode */
+ unsigned rgmii_override:1; /* Deprecated rgmii-*id behavior */
+ unsigned int num_tx_desc; /* TX descriptors per packet */
+
+ int duplex;
+
+ const struct ravb_hw_info *info;
+ struct reset_control *rstc;
+};
+
+static inline u32 ravb_read(struct net_device *ndev, enum ravb_reg reg)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ return ioread32(priv->addr + reg);
+}
+
+static inline void ravb_write(struct net_device *ndev, u32 data,
+ enum ravb_reg reg)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ iowrite32(data, priv->addr + reg);
+}
+
+void ravb_modify(struct net_device *ndev, enum ravb_reg reg, u32 clear,
+ u32 set);
+int ravb_wait(struct net_device *ndev, enum ravb_reg reg, u32 mask, u32 value);
+
+void ravb_ptp_interrupt(struct net_device *ndev);
+void ravb_ptp_init(struct net_device *ndev, struct platform_device *pdev);
+void ravb_ptp_stop(struct net_device *ndev);
+
+#endif /* #ifndef __RAVB_H__ */
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
new file mode 100644
index 000000000..e7b700062
--- /dev/null
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -0,0 +1,3117 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Renesas Ethernet AVB device driver
+ *
+ * Copyright (C) 2014-2019 Renesas Electronics Corporation
+ * Copyright (C) 2015 Renesas Solutions Corp.
+ * Copyright (C) 2015-2016 Cogent Embedded, Inc. <source@cogentembedded.com>
+ *
+ * Based on the SuperH Ethernet driver
+ */
+
+#include <linux/cache.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/net_tstamp.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/sys_soc.h>
+#include <linux/reset.h>
+#include <linux/math64.h>
+
+#include "ravb.h"
+
+#define RAVB_DEF_MSG_ENABLE \
+ (NETIF_MSG_LINK | \
+ NETIF_MSG_TIMER | \
+ NETIF_MSG_RX_ERR | \
+ NETIF_MSG_TX_ERR)
+
+static const char *ravb_rx_irqs[NUM_RX_QUEUE] = {
+ "ch0", /* RAVB_BE */
+ "ch1", /* RAVB_NC */
+};
+
+static const char *ravb_tx_irqs[NUM_TX_QUEUE] = {
+ "ch18", /* RAVB_BE */
+ "ch19", /* RAVB_NC */
+};
+
+void ravb_modify(struct net_device *ndev, enum ravb_reg reg, u32 clear,
+ u32 set)
+{
+ ravb_write(ndev, (ravb_read(ndev, reg) & ~clear) | set, reg);
+}
+
+int ravb_wait(struct net_device *ndev, enum ravb_reg reg, u32 mask, u32 value)
+{
+ int i;
+
+ for (i = 0; i < 10000; i++) {
+ if ((ravb_read(ndev, reg) & mask) == value)
+ return 0;
+ udelay(10);
+ }
+ return -ETIMEDOUT;
+}
+
+static int ravb_set_opmode(struct net_device *ndev, u32 opmode)
+{
+ u32 csr_ops = 1U << (opmode & CCC_OPC);
+ u32 ccc_mask = CCC_OPC;
+ int error;
+
+ /* If gPTP active in config mode is supported it needs to be configured
+ * along with CSEL and operating mode in the same access. This is a
+ * hardware limitation.
+ */
+ if (opmode & CCC_GAC)
+ ccc_mask |= CCC_GAC | CCC_CSEL;
+
+ /* Set operating mode */
+ ravb_modify(ndev, CCC, ccc_mask, opmode);
+ /* Check if the operating mode is changed to the requested one */
+ error = ravb_wait(ndev, CSR, CSR_OPS, csr_ops);
+ if (error) {
+ netdev_err(ndev, "failed to switch device to requested mode (%u)\n",
+ opmode & CCC_OPC);
+ }
+
+ return error;
+}
+
+static void ravb_set_rate_gbeth(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ switch (priv->speed) {
+ case 10: /* 10BASE */
+ ravb_write(ndev, GBETH_GECMR_SPEED_10, GECMR);
+ break;
+ case 100: /* 100BASE */
+ ravb_write(ndev, GBETH_GECMR_SPEED_100, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ ravb_write(ndev, GBETH_GECMR_SPEED_1000, GECMR);
+ break;
+ }
+}
+
+static void ravb_set_rate_rcar(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ switch (priv->speed) {
+ case 100: /* 100BASE */
+ ravb_write(ndev, GECMR_SPEED_100, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ ravb_write(ndev, GECMR_SPEED_1000, GECMR);
+ break;
+ }
+}
+
+static void ravb_set_buffer_align(struct sk_buff *skb)
+{
+ u32 reserve = (unsigned long)skb->data & (RAVB_ALIGN - 1);
+
+ if (reserve)
+ skb_reserve(skb, RAVB_ALIGN - reserve);
+}
+
+/* Get MAC address from the MAC address registers
+ *
+ * Ethernet AVB device doesn't have ROM for MAC address.
+ * This function gets the MAC address that was used by a bootloader.
+ */
+static void ravb_read_mac_address(struct device_node *np,
+ struct net_device *ndev)
+{
+ int ret;
+
+ ret = of_get_ethdev_address(np, ndev);
+ if (ret) {
+ u32 mahr = ravb_read(ndev, MAHR);
+ u32 malr = ravb_read(ndev, MALR);
+ u8 addr[ETH_ALEN];
+
+ addr[0] = (mahr >> 24) & 0xFF;
+ addr[1] = (mahr >> 16) & 0xFF;
+ addr[2] = (mahr >> 8) & 0xFF;
+ addr[3] = (mahr >> 0) & 0xFF;
+ addr[4] = (malr >> 8) & 0xFF;
+ addr[5] = (malr >> 0) & 0xFF;
+ eth_hw_addr_set(ndev, addr);
+ }
+}
+
+static void ravb_mdio_ctrl(struct mdiobb_ctrl *ctrl, u32 mask, int set)
+{
+ struct ravb_private *priv = container_of(ctrl, struct ravb_private,
+ mdiobb);
+
+ ravb_modify(priv->ndev, PIR, mask, set ? mask : 0);
+}
+
+/* MDC pin control */
+static void ravb_set_mdc(struct mdiobb_ctrl *ctrl, int level)
+{
+ ravb_mdio_ctrl(ctrl, PIR_MDC, level);
+}
+
+/* Data I/O pin control */
+static void ravb_set_mdio_dir(struct mdiobb_ctrl *ctrl, int output)
+{
+ ravb_mdio_ctrl(ctrl, PIR_MMD, output);
+}
+
+/* Set data bit */
+static void ravb_set_mdio_data(struct mdiobb_ctrl *ctrl, int value)
+{
+ ravb_mdio_ctrl(ctrl, PIR_MDO, value);
+}
+
+/* Get data bit */
+static int ravb_get_mdio_data(struct mdiobb_ctrl *ctrl)
+{
+ struct ravb_private *priv = container_of(ctrl, struct ravb_private,
+ mdiobb);
+
+ return (ravb_read(priv->ndev, PIR) & PIR_MDI) != 0;
+}
+
+/* MDIO bus control struct */
+static const struct mdiobb_ops bb_ops = {
+ .owner = THIS_MODULE,
+ .set_mdc = ravb_set_mdc,
+ .set_mdio_dir = ravb_set_mdio_dir,
+ .set_mdio_data = ravb_set_mdio_data,
+ .get_mdio_data = ravb_get_mdio_data,
+};
+
+/* Free TX skb function for AVB-IP */
+static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ struct net_device_stats *stats = &priv->stats[q];
+ unsigned int num_tx_desc = priv->num_tx_desc;
+ struct ravb_tx_desc *desc;
+ unsigned int entry;
+ int free_num = 0;
+ u32 size;
+
+ for (; priv->cur_tx[q] - priv->dirty_tx[q] > 0; priv->dirty_tx[q]++) {
+ bool txed;
+
+ entry = priv->dirty_tx[q] % (priv->num_tx_ring[q] *
+ num_tx_desc);
+ desc = &priv->tx_ring[q][entry];
+ txed = desc->die_dt == DT_FEMPTY;
+ if (free_txed_only && !txed)
+ break;
+ /* Descriptor type must be checked before all other reads */
+ dma_rmb();
+ size = le16_to_cpu(desc->ds_tagl) & TX_DS;
+ /* Free the original skb. */
+ if (priv->tx_skb[q][entry / num_tx_desc]) {
+ dma_unmap_single(ndev->dev.parent, le32_to_cpu(desc->dptr),
+ size, DMA_TO_DEVICE);
+ /* Last packet descriptor? */
+ if (entry % num_tx_desc == num_tx_desc - 1) {
+ entry /= num_tx_desc;
+ dev_kfree_skb_any(priv->tx_skb[q][entry]);
+ priv->tx_skb[q][entry] = NULL;
+ if (txed)
+ stats->tx_packets++;
+ }
+ free_num++;
+ }
+ if (txed)
+ stats->tx_bytes += size;
+ desc->die_dt = DT_EEMPTY;
+ }
+ return free_num;
+}
+
+static void ravb_rx_ring_free_gbeth(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ unsigned int ring_size;
+ unsigned int i;
+
+ if (!priv->gbeth_rx_ring)
+ return;
+
+ for (i = 0; i < priv->num_rx_ring[q]; i++) {
+ struct ravb_rx_desc *desc = &priv->gbeth_rx_ring[i];
+
+ if (!dma_mapping_error(ndev->dev.parent,
+ le32_to_cpu(desc->dptr)))
+ dma_unmap_single(ndev->dev.parent,
+ le32_to_cpu(desc->dptr),
+ GBETH_RX_BUFF_MAX,
+ DMA_FROM_DEVICE);
+ }
+ ring_size = sizeof(struct ravb_rx_desc) * (priv->num_rx_ring[q] + 1);
+ dma_free_coherent(ndev->dev.parent, ring_size, priv->gbeth_rx_ring,
+ priv->rx_desc_dma[q]);
+ priv->gbeth_rx_ring = NULL;
+}
+
+static void ravb_rx_ring_free_rcar(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ unsigned int ring_size;
+ unsigned int i;
+
+ if (!priv->rx_ring[q])
+ return;
+
+ for (i = 0; i < priv->num_rx_ring[q]; i++) {
+ struct ravb_ex_rx_desc *desc = &priv->rx_ring[q][i];
+
+ if (!dma_mapping_error(ndev->dev.parent,
+ le32_to_cpu(desc->dptr)))
+ dma_unmap_single(ndev->dev.parent,
+ le32_to_cpu(desc->dptr),
+ RX_BUF_SZ,
+ DMA_FROM_DEVICE);
+ }
+ ring_size = sizeof(struct ravb_ex_rx_desc) *
+ (priv->num_rx_ring[q] + 1);
+ dma_free_coherent(ndev->dev.parent, ring_size, priv->rx_ring[q],
+ priv->rx_desc_dma[q]);
+ priv->rx_ring[q] = NULL;
+}
+
+/* Free skb's and DMA buffers for Ethernet AVB */
+static void ravb_ring_free(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ unsigned int num_tx_desc = priv->num_tx_desc;
+ unsigned int ring_size;
+ unsigned int i;
+
+ info->rx_ring_free(ndev, q);
+
+ if (priv->tx_ring[q]) {
+ ravb_tx_free(ndev, q, false);
+
+ ring_size = sizeof(struct ravb_tx_desc) *
+ (priv->num_tx_ring[q] * num_tx_desc + 1);
+ dma_free_coherent(ndev->dev.parent, ring_size, priv->tx_ring[q],
+ priv->tx_desc_dma[q]);
+ priv->tx_ring[q] = NULL;
+ }
+
+ /* Free RX skb ringbuffer */
+ if (priv->rx_skb[q]) {
+ for (i = 0; i < priv->num_rx_ring[q]; i++)
+ dev_kfree_skb(priv->rx_skb[q][i]);
+ }
+ kfree(priv->rx_skb[q]);
+ priv->rx_skb[q] = NULL;
+
+ /* Free aligned TX buffers */
+ kfree(priv->tx_align[q]);
+ priv->tx_align[q] = NULL;
+
+ /* Free TX skb ringbuffer.
+ * SKBs are freed by ravb_tx_free() call above.
+ */
+ kfree(priv->tx_skb[q]);
+ priv->tx_skb[q] = NULL;
+}
+
+static void ravb_rx_ring_format_gbeth(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ struct ravb_rx_desc *rx_desc;
+ unsigned int rx_ring_size;
+ dma_addr_t dma_addr;
+ unsigned int i;
+
+ rx_ring_size = sizeof(*rx_desc) * priv->num_rx_ring[q];
+ memset(priv->gbeth_rx_ring, 0, rx_ring_size);
+ /* Build RX ring buffer */
+ for (i = 0; i < priv->num_rx_ring[q]; i++) {
+ /* RX descriptor */
+ rx_desc = &priv->gbeth_rx_ring[i];
+ rx_desc->ds_cc = cpu_to_le16(GBETH_RX_DESC_DATA_SIZE);
+ dma_addr = dma_map_single(ndev->dev.parent, priv->rx_skb[q][i]->data,
+ GBETH_RX_BUFF_MAX,
+ DMA_FROM_DEVICE);
+ /* We just set the data size to 0 for a failed mapping which
+ * should prevent DMA from happening...
+ */
+ if (dma_mapping_error(ndev->dev.parent, dma_addr))
+ rx_desc->ds_cc = cpu_to_le16(0);
+ rx_desc->dptr = cpu_to_le32(dma_addr);
+ rx_desc->die_dt = DT_FEMPTY;
+ }
+ rx_desc = &priv->gbeth_rx_ring[i];
+ rx_desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
+ rx_desc->die_dt = DT_LINKFIX; /* type */
+}
+
+static void ravb_rx_ring_format_rcar(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ struct ravb_ex_rx_desc *rx_desc;
+ unsigned int rx_ring_size = sizeof(*rx_desc) * priv->num_rx_ring[q];
+ dma_addr_t dma_addr;
+ unsigned int i;
+
+ memset(priv->rx_ring[q], 0, rx_ring_size);
+ /* Build RX ring buffer */
+ for (i = 0; i < priv->num_rx_ring[q]; i++) {
+ /* RX descriptor */
+ rx_desc = &priv->rx_ring[q][i];
+ rx_desc->ds_cc = cpu_to_le16(RX_BUF_SZ);
+ dma_addr = dma_map_single(ndev->dev.parent, priv->rx_skb[q][i]->data,
+ RX_BUF_SZ,
+ DMA_FROM_DEVICE);
+ /* We just set the data size to 0 for a failed mapping which
+ * should prevent DMA from happening...
+ */
+ if (dma_mapping_error(ndev->dev.parent, dma_addr))
+ rx_desc->ds_cc = cpu_to_le16(0);
+ rx_desc->dptr = cpu_to_le32(dma_addr);
+ rx_desc->die_dt = DT_FEMPTY;
+ }
+ rx_desc = &priv->rx_ring[q][i];
+ rx_desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
+ rx_desc->die_dt = DT_LINKFIX; /* type */
+}
+
+/* Format skb and descriptor buffer for Ethernet AVB */
+static void ravb_ring_format(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ unsigned int num_tx_desc = priv->num_tx_desc;
+ struct ravb_tx_desc *tx_desc;
+ struct ravb_desc *desc;
+ unsigned int tx_ring_size = sizeof(*tx_desc) * priv->num_tx_ring[q] *
+ num_tx_desc;
+ unsigned int i;
+
+ priv->cur_rx[q] = 0;
+ priv->cur_tx[q] = 0;
+ priv->dirty_rx[q] = 0;
+ priv->dirty_tx[q] = 0;
+
+ info->rx_ring_format(ndev, q);
+
+ memset(priv->tx_ring[q], 0, tx_ring_size);
+ /* Build TX ring buffer */
+ for (i = 0, tx_desc = priv->tx_ring[q]; i < priv->num_tx_ring[q];
+ i++, tx_desc++) {
+ tx_desc->die_dt = DT_EEMPTY;
+ if (num_tx_desc > 1) {
+ tx_desc++;
+ tx_desc->die_dt = DT_EEMPTY;
+ }
+ }
+ tx_desc->dptr = cpu_to_le32((u32)priv->tx_desc_dma[q]);
+ tx_desc->die_dt = DT_LINKFIX; /* type */
+
+ /* RX descriptor base address for best effort */
+ desc = &priv->desc_bat[RX_QUEUE_OFFSET + q];
+ desc->die_dt = DT_LINKFIX; /* type */
+ desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
+
+ /* TX descriptor base address for best effort */
+ desc = &priv->desc_bat[q];
+ desc->die_dt = DT_LINKFIX; /* type */
+ desc->dptr = cpu_to_le32((u32)priv->tx_desc_dma[q]);
+}
+
+static void *ravb_alloc_rx_desc_gbeth(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ unsigned int ring_size;
+
+ ring_size = sizeof(struct ravb_rx_desc) * (priv->num_rx_ring[q] + 1);
+
+ priv->gbeth_rx_ring = dma_alloc_coherent(ndev->dev.parent, ring_size,
+ &priv->rx_desc_dma[q],
+ GFP_KERNEL);
+ return priv->gbeth_rx_ring;
+}
+
+static void *ravb_alloc_rx_desc_rcar(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ unsigned int ring_size;
+
+ ring_size = sizeof(struct ravb_ex_rx_desc) * (priv->num_rx_ring[q] + 1);
+
+ priv->rx_ring[q] = dma_alloc_coherent(ndev->dev.parent, ring_size,
+ &priv->rx_desc_dma[q],
+ GFP_KERNEL);
+ return priv->rx_ring[q];
+}
+
+/* Init skb and descriptor buffer for Ethernet AVB */
+static int ravb_ring_init(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ unsigned int num_tx_desc = priv->num_tx_desc;
+ unsigned int ring_size;
+ struct sk_buff *skb;
+ unsigned int i;
+
+ /* Allocate RX and TX skb rings */
+ priv->rx_skb[q] = kcalloc(priv->num_rx_ring[q],
+ sizeof(*priv->rx_skb[q]), GFP_KERNEL);
+ priv->tx_skb[q] = kcalloc(priv->num_tx_ring[q],
+ sizeof(*priv->tx_skb[q]), GFP_KERNEL);
+ if (!priv->rx_skb[q] || !priv->tx_skb[q])
+ goto error;
+
+ for (i = 0; i < priv->num_rx_ring[q]; i++) {
+ skb = __netdev_alloc_skb(ndev, info->max_rx_len, GFP_KERNEL);
+ if (!skb)
+ goto error;
+ ravb_set_buffer_align(skb);
+ priv->rx_skb[q][i] = skb;
+ }
+
+ if (num_tx_desc > 1) {
+ /* Allocate rings for the aligned buffers */
+ priv->tx_align[q] = kmalloc(DPTR_ALIGN * priv->num_tx_ring[q] +
+ DPTR_ALIGN - 1, GFP_KERNEL);
+ if (!priv->tx_align[q])
+ goto error;
+ }
+
+ /* Allocate all RX descriptors. */
+ if (!info->alloc_rx_desc(ndev, q))
+ goto error;
+
+ priv->dirty_rx[q] = 0;
+
+ /* Allocate all TX descriptors. */
+ ring_size = sizeof(struct ravb_tx_desc) *
+ (priv->num_tx_ring[q] * num_tx_desc + 1);
+ priv->tx_ring[q] = dma_alloc_coherent(ndev->dev.parent, ring_size,
+ &priv->tx_desc_dma[q],
+ GFP_KERNEL);
+ if (!priv->tx_ring[q])
+ goto error;
+
+ return 0;
+
+error:
+ ravb_ring_free(ndev, q);
+
+ return -ENOMEM;
+}
+
+static void ravb_emac_init_gbeth(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ if (priv->phy_interface == PHY_INTERFACE_MODE_MII) {
+ ravb_write(ndev, (1000 << 16) | CXR35_SEL_XMII_MII, CXR35);
+ ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1, 0);
+ } else {
+ ravb_write(ndev, (1000 << 16) | CXR35_SEL_XMII_RGMII, CXR35);
+ ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1,
+ CXR31_SEL_LINK0);
+ }
+
+ /* Receive frame limit set register */
+ ravb_write(ndev, GBETH_RX_BUFF_MAX + ETH_FCS_LEN, RFLR);
+
+ /* EMAC Mode: PAUSE prohibition; Duplex; TX; RX; CRC Pass Through */
+ ravb_write(ndev, ECMR_ZPF | ((priv->duplex > 0) ? ECMR_DM : 0) |
+ ECMR_TE | ECMR_RE | ECMR_RCPT |
+ ECMR_TXF | ECMR_RXF, ECMR);
+
+ ravb_set_rate_gbeth(ndev);
+
+ /* Set MAC address */
+ ravb_write(ndev,
+ (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
+ (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
+ ravb_write(ndev, (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
+
+ /* E-MAC status register clear */
+ ravb_write(ndev, ECSR_ICD | ECSR_LCHNG | ECSR_PFRI, ECSR);
+ ravb_write(ndev, CSR0_TPE | CSR0_RPE, CSR0);
+
+ /* E-MAC interrupt enable register */
+ ravb_write(ndev, ECSIPR_ICDIP, ECSIPR);
+}
+
+static void ravb_emac_init_rcar(struct net_device *ndev)
+{
+ /* Receive frame limit set register */
+ ravb_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN, RFLR);
+
+ /* EMAC Mode: PAUSE prohibition; Duplex; RX Checksum; TX; RX */
+ ravb_write(ndev, ECMR_ZPF | ECMR_DM |
+ (ndev->features & NETIF_F_RXCSUM ? ECMR_RCSC : 0) |
+ ECMR_TE | ECMR_RE, ECMR);
+
+ ravb_set_rate_rcar(ndev);
+
+ /* Set MAC address */
+ ravb_write(ndev,
+ (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
+ (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
+ ravb_write(ndev,
+ (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
+
+ /* E-MAC status register clear */
+ ravb_write(ndev, ECSR_ICD | ECSR_MPD, ECSR);
+
+ /* E-MAC interrupt enable register */
+ ravb_write(ndev, ECSIPR_ICDIP | ECSIPR_MPDIP | ECSIPR_LCHNGIP, ECSIPR);
+}
+
+/* E-MAC init function */
+static void ravb_emac_init(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ info->emac_init(ndev);
+}
+
+static int ravb_dmac_init_gbeth(struct net_device *ndev)
+{
+ int error;
+
+ error = ravb_ring_init(ndev, RAVB_BE);
+ if (error)
+ return error;
+
+ /* Descriptor format */
+ ravb_ring_format(ndev, RAVB_BE);
+
+ /* Set DMAC RX */
+ ravb_write(ndev, 0x60000000, RCR);
+
+ /* Set Max Frame Length (RTC) */
+ ravb_write(ndev, 0x7ffc0000 | GBETH_RX_BUFF_MAX, RTC);
+
+ /* Set FIFO size */
+ ravb_write(ndev, 0x00222200, TGC);
+
+ ravb_write(ndev, 0, TCCR);
+
+ /* Frame receive */
+ ravb_write(ndev, RIC0_FRE0, RIC0);
+ /* Disable FIFO full warning */
+ ravb_write(ndev, 0x0, RIC1);
+ /* Receive FIFO full error, descriptor empty */
+ ravb_write(ndev, RIC2_QFE0 | RIC2_RFFE, RIC2);
+
+ ravb_write(ndev, TIC_FTE0, TIC);
+
+ return 0;
+}
+
+static int ravb_dmac_init_rcar(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int error;
+
+ error = ravb_ring_init(ndev, RAVB_BE);
+ if (error)
+ return error;
+ error = ravb_ring_init(ndev, RAVB_NC);
+ if (error) {
+ ravb_ring_free(ndev, RAVB_BE);
+ return error;
+ }
+
+ /* Descriptor format */
+ ravb_ring_format(ndev, RAVB_BE);
+ ravb_ring_format(ndev, RAVB_NC);
+
+ /* Set AVB RX */
+ ravb_write(ndev,
+ RCR_EFFS | RCR_ENCF | RCR_ETS0 | RCR_ESF | 0x18000000, RCR);
+
+ /* Set FIFO size */
+ ravb_write(ndev, TGC_TQP_AVBMODE1 | 0x00112200, TGC);
+
+ /* Timestamp enable */
+ ravb_write(ndev, TCCR_TFEN, TCCR);
+
+ /* Interrupt init: */
+ if (info->multi_irqs) {
+ /* Clear DIL.DPLx */
+ ravb_write(ndev, 0, DIL);
+ /* Set queue specific interrupt */
+ ravb_write(ndev, CIE_CRIE | CIE_CTIE | CIE_CL0M, CIE);
+ }
+ /* Frame receive */
+ ravb_write(ndev, RIC0_FRE0 | RIC0_FRE1, RIC0);
+ /* Disable FIFO full warning */
+ ravb_write(ndev, 0, RIC1);
+ /* Receive FIFO full error, descriptor empty */
+ ravb_write(ndev, RIC2_QFE0 | RIC2_QFE1 | RIC2_RFFE, RIC2);
+ /* Frame transmitted, timestamp FIFO updated */
+ ravb_write(ndev, TIC_FTE0 | TIC_FTE1 | TIC_TFUE, TIC);
+
+ return 0;
+}
+
+/* Device init function for Ethernet AVB */
+static int ravb_dmac_init(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int error;
+
+ /* Set CONFIG mode */
+ error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+ if (error)
+ return error;
+
+ error = info->dmac_init(ndev);
+ if (error)
+ return error;
+
+ /* Setting the control will start the AVB-DMAC process. */
+ return ravb_set_opmode(ndev, CCC_OPC_OPERATION);
+}
+
+static void ravb_get_tx_tstamp(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ struct ravb_tstamp_skb *ts_skb, *ts_skb2;
+ struct skb_shared_hwtstamps shhwtstamps;
+ struct sk_buff *skb;
+ struct timespec64 ts;
+ u16 tag, tfa_tag;
+ int count;
+ u32 tfa2;
+
+ count = (ravb_read(ndev, TSR) & TSR_TFFL) >> 8;
+ while (count--) {
+ tfa2 = ravb_read(ndev, TFA2);
+ tfa_tag = (tfa2 & TFA2_TST) >> 16;
+ ts.tv_nsec = (u64)ravb_read(ndev, TFA0);
+ ts.tv_sec = ((u64)(tfa2 & TFA2_TSV) << 32) |
+ ravb_read(ndev, TFA1);
+ memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+ shhwtstamps.hwtstamp = timespec64_to_ktime(ts);
+ list_for_each_entry_safe(ts_skb, ts_skb2, &priv->ts_skb_list,
+ list) {
+ skb = ts_skb->skb;
+ tag = ts_skb->tag;
+ list_del(&ts_skb->list);
+ kfree(ts_skb);
+ if (tag == tfa_tag) {
+ skb_tstamp_tx(skb, &shhwtstamps);
+ dev_consume_skb_any(skb);
+ break;
+ } else {
+ dev_kfree_skb_any(skb);
+ }
+ }
+ ravb_modify(ndev, TCCR, TCCR_TFR, TCCR_TFR);
+ }
+}
+
+static void ravb_rx_csum(struct sk_buff *skb)
+{
+ u8 *hw_csum;
+
+ /* The hardware checksum is contained in sizeof(__sum16) (2) bytes
+ * appended to packet data
+ */
+ if (unlikely(skb->len < sizeof(__sum16)))
+ return;
+ hw_csum = skb_tail_pointer(skb) - sizeof(__sum16);
+ skb->csum = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ skb_trim(skb, skb->len - sizeof(__sum16));
+}
+
+static struct sk_buff *ravb_get_skb_gbeth(struct net_device *ndev, int entry,
+ struct ravb_rx_desc *desc)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ struct sk_buff *skb;
+
+ skb = priv->rx_skb[RAVB_BE][entry];
+ priv->rx_skb[RAVB_BE][entry] = NULL;
+ dma_unmap_single(ndev->dev.parent, le32_to_cpu(desc->dptr),
+ ALIGN(GBETH_RX_BUFF_MAX, 16), DMA_FROM_DEVICE);
+
+ return skb;
+}
+
+/* Packet receive function for Gigabit Ethernet */
+static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ struct net_device_stats *stats;
+ struct ravb_rx_desc *desc;
+ struct sk_buff *skb;
+ dma_addr_t dma_addr;
+ u8 desc_status;
+ int boguscnt;
+ u16 pkt_len;
+ u8 die_dt;
+ int entry;
+ int limit;
+
+ entry = priv->cur_rx[q] % priv->num_rx_ring[q];
+ boguscnt = priv->dirty_rx[q] + priv->num_rx_ring[q] - priv->cur_rx[q];
+ stats = &priv->stats[q];
+
+ boguscnt = min(boguscnt, *quota);
+ limit = boguscnt;
+ desc = &priv->gbeth_rx_ring[entry];
+ while (desc->die_dt != DT_FEMPTY) {
+ /* Descriptor type must be checked before all other reads */
+ dma_rmb();
+ desc_status = desc->msc;
+ pkt_len = le16_to_cpu(desc->ds_cc) & RX_DS;
+
+ if (--boguscnt < 0)
+ break;
+
+ /* We use 0-byte descriptors to mark the DMA mapping errors */
+ if (!pkt_len)
+ continue;
+
+ if (desc_status & MSC_MC)
+ stats->multicast++;
+
+ if (desc_status & (MSC_CRC | MSC_RFE | MSC_RTSF | MSC_RTLF | MSC_CEEF)) {
+ stats->rx_errors++;
+ if (desc_status & MSC_CRC)
+ stats->rx_crc_errors++;
+ if (desc_status & MSC_RFE)
+ stats->rx_frame_errors++;
+ if (desc_status & (MSC_RTLF | MSC_RTSF))
+ stats->rx_length_errors++;
+ if (desc_status & MSC_CEEF)
+ stats->rx_missed_errors++;
+ } else {
+ die_dt = desc->die_dt & 0xF0;
+ switch (die_dt) {
+ case DT_FSINGLE:
+ skb = ravb_get_skb_gbeth(ndev, entry, desc);
+ skb_put(skb, pkt_len);
+ skb->protocol = eth_type_trans(skb, ndev);
+ napi_gro_receive(&priv->napi[q], skb);
+ stats->rx_packets++;
+ stats->rx_bytes += pkt_len;
+ break;
+ case DT_FSTART:
+ priv->rx_1st_skb = ravb_get_skb_gbeth(ndev, entry, desc);
+ skb_put(priv->rx_1st_skb, pkt_len);
+ break;
+ case DT_FMID:
+ skb = ravb_get_skb_gbeth(ndev, entry, desc);
+ skb_copy_to_linear_data_offset(priv->rx_1st_skb,
+ priv->rx_1st_skb->len,
+ skb->data,
+ pkt_len);
+ skb_put(priv->rx_1st_skb, pkt_len);
+ dev_kfree_skb(skb);
+ break;
+ case DT_FEND:
+ skb = ravb_get_skb_gbeth(ndev, entry, desc);
+ skb_copy_to_linear_data_offset(priv->rx_1st_skb,
+ priv->rx_1st_skb->len,
+ skb->data,
+ pkt_len);
+ skb_put(priv->rx_1st_skb, pkt_len);
+ dev_kfree_skb(skb);
+ priv->rx_1st_skb->protocol =
+ eth_type_trans(priv->rx_1st_skb, ndev);
+ napi_gro_receive(&priv->napi[q],
+ priv->rx_1st_skb);
+ stats->rx_packets++;
+ stats->rx_bytes += pkt_len;
+ break;
+ }
+ }
+
+ entry = (++priv->cur_rx[q]) % priv->num_rx_ring[q];
+ desc = &priv->gbeth_rx_ring[entry];
+ }
+
+ /* Refill the RX ring buffers. */
+ for (; priv->cur_rx[q] - priv->dirty_rx[q] > 0; priv->dirty_rx[q]++) {
+ entry = priv->dirty_rx[q] % priv->num_rx_ring[q];
+ desc = &priv->gbeth_rx_ring[entry];
+ desc->ds_cc = cpu_to_le16(GBETH_RX_DESC_DATA_SIZE);
+
+ if (!priv->rx_skb[q][entry]) {
+ skb = netdev_alloc_skb(ndev, info->max_rx_len);
+ if (!skb)
+ break;
+ ravb_set_buffer_align(skb);
+ dma_addr = dma_map_single(ndev->dev.parent,
+ skb->data,
+ GBETH_RX_BUFF_MAX,
+ DMA_FROM_DEVICE);
+ skb_checksum_none_assert(skb);
+ /* We just set the data size to 0 for a failed mapping
+ * which should prevent DMA from happening...
+ */
+ if (dma_mapping_error(ndev->dev.parent, dma_addr))
+ desc->ds_cc = cpu_to_le16(0);
+ desc->dptr = cpu_to_le32(dma_addr);
+ priv->rx_skb[q][entry] = skb;
+ }
+ /* Descriptor type must be set after all the above writes */
+ dma_wmb();
+ desc->die_dt = DT_FEMPTY;
+ }
+
+ *quota -= limit - (++boguscnt);
+
+ return boguscnt <= 0;
+}
+
+/* Packet receive function for Ethernet AVB */
+static bool ravb_rx_rcar(struct net_device *ndev, int *quota, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int entry = priv->cur_rx[q] % priv->num_rx_ring[q];
+ int boguscnt = (priv->dirty_rx[q] + priv->num_rx_ring[q]) -
+ priv->cur_rx[q];
+ struct net_device_stats *stats = &priv->stats[q];
+ struct ravb_ex_rx_desc *desc;
+ struct sk_buff *skb;
+ dma_addr_t dma_addr;
+ struct timespec64 ts;
+ u8 desc_status;
+ u16 pkt_len;
+ int limit;
+
+ boguscnt = min(boguscnt, *quota);
+ limit = boguscnt;
+ desc = &priv->rx_ring[q][entry];
+ while (desc->die_dt != DT_FEMPTY) {
+ /* Descriptor type must be checked before all other reads */
+ dma_rmb();
+ desc_status = desc->msc;
+ pkt_len = le16_to_cpu(desc->ds_cc) & RX_DS;
+
+ if (--boguscnt < 0)
+ break;
+
+ /* We use 0-byte descriptors to mark the DMA mapping errors */
+ if (!pkt_len)
+ continue;
+
+ if (desc_status & MSC_MC)
+ stats->multicast++;
+
+ if (desc_status & (MSC_CRC | MSC_RFE | MSC_RTSF | MSC_RTLF |
+ MSC_CEEF)) {
+ stats->rx_errors++;
+ if (desc_status & MSC_CRC)
+ stats->rx_crc_errors++;
+ if (desc_status & MSC_RFE)
+ stats->rx_frame_errors++;
+ if (desc_status & (MSC_RTLF | MSC_RTSF))
+ stats->rx_length_errors++;
+ if (desc_status & MSC_CEEF)
+ stats->rx_missed_errors++;
+ } else {
+ u32 get_ts = priv->tstamp_rx_ctrl & RAVB_RXTSTAMP_TYPE;
+
+ skb = priv->rx_skb[q][entry];
+ priv->rx_skb[q][entry] = NULL;
+ dma_unmap_single(ndev->dev.parent, le32_to_cpu(desc->dptr),
+ RX_BUF_SZ,
+ DMA_FROM_DEVICE);
+ get_ts &= (q == RAVB_NC) ?
+ RAVB_RXTSTAMP_TYPE_V2_L2_EVENT :
+ ~RAVB_RXTSTAMP_TYPE_V2_L2_EVENT;
+ if (get_ts) {
+ struct skb_shared_hwtstamps *shhwtstamps;
+
+ shhwtstamps = skb_hwtstamps(skb);
+ memset(shhwtstamps, 0, sizeof(*shhwtstamps));
+ ts.tv_sec = ((u64) le16_to_cpu(desc->ts_sh) <<
+ 32) | le32_to_cpu(desc->ts_sl);
+ ts.tv_nsec = le32_to_cpu(desc->ts_n);
+ shhwtstamps->hwtstamp = timespec64_to_ktime(ts);
+ }
+
+ skb_put(skb, pkt_len);
+ skb->protocol = eth_type_trans(skb, ndev);
+ if (ndev->features & NETIF_F_RXCSUM)
+ ravb_rx_csum(skb);
+ napi_gro_receive(&priv->napi[q], skb);
+ stats->rx_packets++;
+ stats->rx_bytes += pkt_len;
+ }
+
+ entry = (++priv->cur_rx[q]) % priv->num_rx_ring[q];
+ desc = &priv->rx_ring[q][entry];
+ }
+
+ /* Refill the RX ring buffers. */
+ for (; priv->cur_rx[q] - priv->dirty_rx[q] > 0; priv->dirty_rx[q]++) {
+ entry = priv->dirty_rx[q] % priv->num_rx_ring[q];
+ desc = &priv->rx_ring[q][entry];
+ desc->ds_cc = cpu_to_le16(RX_BUF_SZ);
+
+ if (!priv->rx_skb[q][entry]) {
+ skb = netdev_alloc_skb(ndev, info->max_rx_len);
+ if (!skb)
+ break; /* Better luck next round. */
+ ravb_set_buffer_align(skb);
+ dma_addr = dma_map_single(ndev->dev.parent, skb->data,
+ le16_to_cpu(desc->ds_cc),
+ DMA_FROM_DEVICE);
+ skb_checksum_none_assert(skb);
+ /* We just set the data size to 0 for a failed mapping
+ * which should prevent DMA from happening...
+ */
+ if (dma_mapping_error(ndev->dev.parent, dma_addr))
+ desc->ds_cc = cpu_to_le16(0);
+ desc->dptr = cpu_to_le32(dma_addr);
+ priv->rx_skb[q][entry] = skb;
+ }
+ /* Descriptor type must be set after all the above writes */
+ dma_wmb();
+ desc->die_dt = DT_FEMPTY;
+ }
+
+ *quota -= limit - (++boguscnt);
+
+ return boguscnt <= 0;
+}
+
+/* Packet receive function for Ethernet AVB */
+static bool ravb_rx(struct net_device *ndev, int *quota, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ return info->receive(ndev, quota, q);
+}
+
+static void ravb_rcv_snd_disable(struct net_device *ndev)
+{
+ /* Disable TX and RX */
+ ravb_modify(ndev, ECMR, ECMR_RE | ECMR_TE, 0);
+}
+
+static void ravb_rcv_snd_enable(struct net_device *ndev)
+{
+ /* Enable TX and RX */
+ ravb_modify(ndev, ECMR, ECMR_RE | ECMR_TE, ECMR_RE | ECMR_TE);
+}
+
+/* function for waiting dma process finished */
+static int ravb_stop_dma(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int error;
+
+ /* Wait for stopping the hardware TX process */
+ error = ravb_wait(ndev, TCCR, info->tccr_mask, 0);
+
+ if (error)
+ return error;
+
+ error = ravb_wait(ndev, CSR, CSR_TPO0 | CSR_TPO1 | CSR_TPO2 | CSR_TPO3,
+ 0);
+ if (error)
+ return error;
+
+ /* Stop the E-MAC's RX/TX processes. */
+ ravb_rcv_snd_disable(ndev);
+
+ /* Wait for stopping the RX DMA process */
+ error = ravb_wait(ndev, CSR, CSR_RPO, 0);
+ if (error)
+ return error;
+
+ /* Stop AVB-DMAC process */
+ return ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+}
+
+/* E-MAC interrupt handler */
+static void ravb_emac_interrupt_unlocked(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ u32 ecsr, psr;
+
+ ecsr = ravb_read(ndev, ECSR);
+ ravb_write(ndev, ecsr, ECSR); /* clear interrupt */
+
+ if (ecsr & ECSR_MPD)
+ pm_wakeup_event(&priv->pdev->dev, 0);
+ if (ecsr & ECSR_ICD)
+ ndev->stats.tx_carrier_errors++;
+ if (ecsr & ECSR_LCHNG) {
+ /* Link changed */
+ if (priv->no_avb_link)
+ return;
+ psr = ravb_read(ndev, PSR);
+ if (priv->avb_link_active_low)
+ psr ^= PSR_LMON;
+ if (!(psr & PSR_LMON)) {
+ /* DIsable RX and TX */
+ ravb_rcv_snd_disable(ndev);
+ } else {
+ /* Enable RX and TX */
+ ravb_rcv_snd_enable(ndev);
+ }
+ }
+}
+
+static irqreturn_t ravb_emac_interrupt(int irq, void *dev_id)
+{
+ struct net_device *ndev = dev_id;
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ spin_lock(&priv->lock);
+ ravb_emac_interrupt_unlocked(ndev);
+ spin_unlock(&priv->lock);
+ return IRQ_HANDLED;
+}
+
+/* Error interrupt handler */
+static void ravb_error_interrupt(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ u32 eis, ris2;
+
+ eis = ravb_read(ndev, EIS);
+ ravb_write(ndev, ~(EIS_QFS | EIS_RESERVED), EIS);
+ if (eis & EIS_QFS) {
+ ris2 = ravb_read(ndev, RIS2);
+ ravb_write(ndev, ~(RIS2_QFF0 | RIS2_QFF1 | RIS2_RFFF | RIS2_RESERVED),
+ RIS2);
+
+ /* Receive Descriptor Empty int */
+ if (ris2 & RIS2_QFF0)
+ priv->stats[RAVB_BE].rx_over_errors++;
+
+ /* Receive Descriptor Empty int */
+ if (ris2 & RIS2_QFF1)
+ priv->stats[RAVB_NC].rx_over_errors++;
+
+ /* Receive FIFO Overflow int */
+ if (ris2 & RIS2_RFFF)
+ priv->rx_fifo_errors++;
+ }
+}
+
+static bool ravb_queue_interrupt(struct net_device *ndev, int q)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ u32 ris0 = ravb_read(ndev, RIS0);
+ u32 ric0 = ravb_read(ndev, RIC0);
+ u32 tis = ravb_read(ndev, TIS);
+ u32 tic = ravb_read(ndev, TIC);
+
+ if (((ris0 & ric0) & BIT(q)) || ((tis & tic) & BIT(q))) {
+ if (napi_schedule_prep(&priv->napi[q])) {
+ /* Mask RX and TX interrupts */
+ if (!info->irq_en_dis) {
+ ravb_write(ndev, ric0 & ~BIT(q), RIC0);
+ ravb_write(ndev, tic & ~BIT(q), TIC);
+ } else {
+ ravb_write(ndev, BIT(q), RID0);
+ ravb_write(ndev, BIT(q), TID);
+ }
+ __napi_schedule(&priv->napi[q]);
+ } else {
+ netdev_warn(ndev,
+ "ignoring interrupt, rx status 0x%08x, rx mask 0x%08x,\n",
+ ris0, ric0);
+ netdev_warn(ndev,
+ " tx status 0x%08x, tx mask 0x%08x.\n",
+ tis, tic);
+ }
+ return true;
+ }
+ return false;
+}
+
+static bool ravb_timestamp_interrupt(struct net_device *ndev)
+{
+ u32 tis = ravb_read(ndev, TIS);
+
+ if (tis & TIS_TFUF) {
+ ravb_write(ndev, ~(TIS_TFUF | TIS_RESERVED), TIS);
+ ravb_get_tx_tstamp(ndev);
+ return true;
+ }
+ return false;
+}
+
+static irqreturn_t ravb_interrupt(int irq, void *dev_id)
+{
+ struct net_device *ndev = dev_id;
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ irqreturn_t result = IRQ_NONE;
+ u32 iss;
+
+ spin_lock(&priv->lock);
+ /* Get interrupt status */
+ iss = ravb_read(ndev, ISS);
+
+ /* Received and transmitted interrupts */
+ if (iss & (ISS_FRS | ISS_FTS | ISS_TFUS)) {
+ int q;
+
+ /* Timestamp updated */
+ if (ravb_timestamp_interrupt(ndev))
+ result = IRQ_HANDLED;
+
+ /* Network control and best effort queue RX/TX */
+ if (info->nc_queues) {
+ for (q = RAVB_NC; q >= RAVB_BE; q--) {
+ if (ravb_queue_interrupt(ndev, q))
+ result = IRQ_HANDLED;
+ }
+ } else {
+ if (ravb_queue_interrupt(ndev, RAVB_BE))
+ result = IRQ_HANDLED;
+ }
+ }
+
+ /* E-MAC status summary */
+ if (iss & ISS_MS) {
+ ravb_emac_interrupt_unlocked(ndev);
+ result = IRQ_HANDLED;
+ }
+
+ /* Error status summary */
+ if (iss & ISS_ES) {
+ ravb_error_interrupt(ndev);
+ result = IRQ_HANDLED;
+ }
+
+ /* gPTP interrupt status summary */
+ if (iss & ISS_CGIS) {
+ ravb_ptp_interrupt(ndev);
+ result = IRQ_HANDLED;
+ }
+
+ spin_unlock(&priv->lock);
+ return result;
+}
+
+/* Timestamp/Error/gPTP interrupt handler */
+static irqreturn_t ravb_multi_interrupt(int irq, void *dev_id)
+{
+ struct net_device *ndev = dev_id;
+ struct ravb_private *priv = netdev_priv(ndev);
+ irqreturn_t result = IRQ_NONE;
+ u32 iss;
+
+ spin_lock(&priv->lock);
+ /* Get interrupt status */
+ iss = ravb_read(ndev, ISS);
+
+ /* Timestamp updated */
+ if ((iss & ISS_TFUS) && ravb_timestamp_interrupt(ndev))
+ result = IRQ_HANDLED;
+
+ /* Error status summary */
+ if (iss & ISS_ES) {
+ ravb_error_interrupt(ndev);
+ result = IRQ_HANDLED;
+ }
+
+ /* gPTP interrupt status summary */
+ if (iss & ISS_CGIS) {
+ ravb_ptp_interrupt(ndev);
+ result = IRQ_HANDLED;
+ }
+
+ spin_unlock(&priv->lock);
+ return result;
+}
+
+static irqreturn_t ravb_dma_interrupt(int irq, void *dev_id, int q)
+{
+ struct net_device *ndev = dev_id;
+ struct ravb_private *priv = netdev_priv(ndev);
+ irqreturn_t result = IRQ_NONE;
+
+ spin_lock(&priv->lock);
+
+ /* Network control/Best effort queue RX/TX */
+ if (ravb_queue_interrupt(ndev, q))
+ result = IRQ_HANDLED;
+
+ spin_unlock(&priv->lock);
+ return result;
+}
+
+static irqreturn_t ravb_be_interrupt(int irq, void *dev_id)
+{
+ return ravb_dma_interrupt(irq, dev_id, RAVB_BE);
+}
+
+static irqreturn_t ravb_nc_interrupt(int irq, void *dev_id)
+{
+ return ravb_dma_interrupt(irq, dev_id, RAVB_NC);
+}
+
+static int ravb_poll(struct napi_struct *napi, int budget)
+{
+ struct net_device *ndev = napi->dev;
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ bool gptp = info->gptp || info->ccc_gac;
+ struct ravb_rx_desc *desc;
+ unsigned long flags;
+ int q = napi - priv->napi;
+ int mask = BIT(q);
+ int quota = budget;
+ unsigned int entry;
+
+ if (!gptp) {
+ entry = priv->cur_rx[q] % priv->num_rx_ring[q];
+ desc = &priv->gbeth_rx_ring[entry];
+ }
+ /* Processing RX Descriptor Ring */
+ /* Clear RX interrupt */
+ ravb_write(ndev, ~(mask | RIS0_RESERVED), RIS0);
+ if (gptp || desc->die_dt != DT_FEMPTY) {
+ if (ravb_rx(ndev, &quota, q))
+ goto out;
+ }
+
+ /* Processing TX Descriptor Ring */
+ spin_lock_irqsave(&priv->lock, flags);
+ /* Clear TX interrupt */
+ ravb_write(ndev, ~(mask | TIS_RESERVED), TIS);
+ ravb_tx_free(ndev, q, true);
+ netif_wake_subqueue(ndev, q);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ napi_complete(napi);
+
+ /* Re-enable RX/TX interrupts */
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!info->irq_en_dis) {
+ ravb_modify(ndev, RIC0, mask, mask);
+ ravb_modify(ndev, TIC, mask, mask);
+ } else {
+ ravb_write(ndev, mask, RIE0);
+ ravb_write(ndev, mask, TIE);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* Receive error message handling */
+ priv->rx_over_errors = priv->stats[RAVB_BE].rx_over_errors;
+ if (info->nc_queues)
+ priv->rx_over_errors += priv->stats[RAVB_NC].rx_over_errors;
+ if (priv->rx_over_errors != ndev->stats.rx_over_errors)
+ ndev->stats.rx_over_errors = priv->rx_over_errors;
+ if (priv->rx_fifo_errors != ndev->stats.rx_fifo_errors)
+ ndev->stats.rx_fifo_errors = priv->rx_fifo_errors;
+out:
+ return budget - quota;
+}
+
+static void ravb_set_duplex_gbeth(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ ravb_modify(ndev, ECMR, ECMR_DM, priv->duplex > 0 ? ECMR_DM : 0);
+}
+
+/* PHY state control function */
+static void ravb_adjust_link(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ struct phy_device *phydev = ndev->phydev;
+ bool new_state = false;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ /* Disable TX and RX right over here, if E-MAC change is ignored */
+ if (priv->no_avb_link)
+ ravb_rcv_snd_disable(ndev);
+
+ if (phydev->link) {
+ if (info->half_duplex && phydev->duplex != priv->duplex) {
+ new_state = true;
+ priv->duplex = phydev->duplex;
+ ravb_set_duplex_gbeth(ndev);
+ }
+
+ if (phydev->speed != priv->speed) {
+ new_state = true;
+ priv->speed = phydev->speed;
+ info->set_rate(ndev);
+ }
+ if (!priv->link) {
+ ravb_modify(ndev, ECMR, ECMR_TXF, 0);
+ new_state = true;
+ priv->link = phydev->link;
+ }
+ } else if (priv->link) {
+ new_state = true;
+ priv->link = 0;
+ priv->speed = 0;
+ if (info->half_duplex)
+ priv->duplex = -1;
+ }
+
+ /* Enable TX and RX right over here, if E-MAC change is ignored */
+ if (priv->no_avb_link && phydev->link)
+ ravb_rcv_snd_enable(ndev);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (new_state && netif_msg_link(priv))
+ phy_print_status(phydev);
+}
+
+static const struct soc_device_attribute r8a7795es10[] = {
+ { .soc_id = "r8a7795", .revision = "ES1.0", },
+ { /* sentinel */ }
+};
+
+/* PHY init function */
+static int ravb_phy_init(struct net_device *ndev)
+{
+ struct device_node *np = ndev->dev.parent->of_node;
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ struct phy_device *phydev;
+ struct device_node *pn;
+ phy_interface_t iface;
+ int err;
+
+ priv->link = 0;
+ priv->speed = 0;
+ priv->duplex = -1;
+
+ /* Try connecting to PHY */
+ pn = of_parse_phandle(np, "phy-handle", 0);
+ if (!pn) {
+ /* In the case of a fixed PHY, the DT node associated
+ * to the PHY is the Ethernet MAC DT node.
+ */
+ if (of_phy_is_fixed_link(np)) {
+ err = of_phy_register_fixed_link(np);
+ if (err)
+ return err;
+ }
+ pn = of_node_get(np);
+ }
+
+ iface = priv->rgmii_override ? PHY_INTERFACE_MODE_RGMII
+ : priv->phy_interface;
+ phydev = of_phy_connect(ndev, pn, ravb_adjust_link, 0, iface);
+ of_node_put(pn);
+ if (!phydev) {
+ netdev_err(ndev, "failed to connect PHY\n");
+ err = -ENOENT;
+ goto err_deregister_fixed_link;
+ }
+
+ /* This driver only support 10/100Mbit speeds on R-Car H3 ES1.0
+ * at this time.
+ */
+ if (soc_device_match(r8a7795es10)) {
+ phy_set_max_speed(phydev, SPEED_100);
+
+ netdev_info(ndev, "limited PHY to 100Mbit/s\n");
+ }
+
+ if (!info->half_duplex) {
+ /* 10BASE, Pause and Asym Pause is not supported */
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT);
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Full_BIT);
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_Pause_BIT);
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_Asym_Pause_BIT);
+
+ /* Half Duplex is not supported */
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_100baseT_Half_BIT);
+ }
+
+ phy_attached_info(phydev);
+
+ return 0;
+
+err_deregister_fixed_link:
+ if (of_phy_is_fixed_link(np))
+ of_phy_deregister_fixed_link(np);
+
+ return err;
+}
+
+/* PHY control start function */
+static int ravb_phy_start(struct net_device *ndev)
+{
+ int error;
+
+ error = ravb_phy_init(ndev);
+ if (error)
+ return error;
+
+ phy_start(ndev->phydev);
+
+ return 0;
+}
+
+static u32 ravb_get_msglevel(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ return priv->msg_enable;
+}
+
+static void ravb_set_msglevel(struct net_device *ndev, u32 value)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ priv->msg_enable = value;
+}
+
+static const char ravb_gstrings_stats_gbeth[][ETH_GSTRING_LEN] = {
+ "rx_queue_0_current",
+ "tx_queue_0_current",
+ "rx_queue_0_dirty",
+ "tx_queue_0_dirty",
+ "rx_queue_0_packets",
+ "tx_queue_0_packets",
+ "rx_queue_0_bytes",
+ "tx_queue_0_bytes",
+ "rx_queue_0_mcast_packets",
+ "rx_queue_0_errors",
+ "rx_queue_0_crc_errors",
+ "rx_queue_0_frame_errors",
+ "rx_queue_0_length_errors",
+ "rx_queue_0_csum_offload_errors",
+ "rx_queue_0_over_errors",
+};
+
+static const char ravb_gstrings_stats[][ETH_GSTRING_LEN] = {
+ "rx_queue_0_current",
+ "tx_queue_0_current",
+ "rx_queue_0_dirty",
+ "tx_queue_0_dirty",
+ "rx_queue_0_packets",
+ "tx_queue_0_packets",
+ "rx_queue_0_bytes",
+ "tx_queue_0_bytes",
+ "rx_queue_0_mcast_packets",
+ "rx_queue_0_errors",
+ "rx_queue_0_crc_errors",
+ "rx_queue_0_frame_errors",
+ "rx_queue_0_length_errors",
+ "rx_queue_0_missed_errors",
+ "rx_queue_0_over_errors",
+
+ "rx_queue_1_current",
+ "tx_queue_1_current",
+ "rx_queue_1_dirty",
+ "tx_queue_1_dirty",
+ "rx_queue_1_packets",
+ "tx_queue_1_packets",
+ "rx_queue_1_bytes",
+ "tx_queue_1_bytes",
+ "rx_queue_1_mcast_packets",
+ "rx_queue_1_errors",
+ "rx_queue_1_crc_errors",
+ "rx_queue_1_frame_errors",
+ "rx_queue_1_length_errors",
+ "rx_queue_1_missed_errors",
+ "rx_queue_1_over_errors",
+};
+
+static int ravb_get_sset_count(struct net_device *netdev, int sset)
+{
+ struct ravb_private *priv = netdev_priv(netdev);
+ const struct ravb_hw_info *info = priv->info;
+
+ switch (sset) {
+ case ETH_SS_STATS:
+ return info->stats_len;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void ravb_get_ethtool_stats(struct net_device *ndev,
+ struct ethtool_stats *estats, u64 *data)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int num_rx_q;
+ int i = 0;
+ int q;
+
+ num_rx_q = info->nc_queues ? NUM_RX_QUEUE : 1;
+ /* Device-specific stats */
+ for (q = RAVB_BE; q < num_rx_q; q++) {
+ struct net_device_stats *stats = &priv->stats[q];
+
+ data[i++] = priv->cur_rx[q];
+ data[i++] = priv->cur_tx[q];
+ data[i++] = priv->dirty_rx[q];
+ data[i++] = priv->dirty_tx[q];
+ data[i++] = stats->rx_packets;
+ data[i++] = stats->tx_packets;
+ data[i++] = stats->rx_bytes;
+ data[i++] = stats->tx_bytes;
+ data[i++] = stats->multicast;
+ data[i++] = stats->rx_errors;
+ data[i++] = stats->rx_crc_errors;
+ data[i++] = stats->rx_frame_errors;
+ data[i++] = stats->rx_length_errors;
+ data[i++] = stats->rx_missed_errors;
+ data[i++] = stats->rx_over_errors;
+ }
+}
+
+static void ravb_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ memcpy(data, info->gstrings_stats, info->gstrings_size);
+ break;
+ }
+}
+
+static void ravb_get_ringparam(struct net_device *ndev,
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kernel_ring,
+ struct netlink_ext_ack *extack)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ ring->rx_max_pending = BE_RX_RING_MAX;
+ ring->tx_max_pending = BE_TX_RING_MAX;
+ ring->rx_pending = priv->num_rx_ring[RAVB_BE];
+ ring->tx_pending = priv->num_tx_ring[RAVB_BE];
+}
+
+static int ravb_set_ringparam(struct net_device *ndev,
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kernel_ring,
+ struct netlink_ext_ack *extack)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int error;
+
+ if (ring->tx_pending > BE_TX_RING_MAX ||
+ ring->rx_pending > BE_RX_RING_MAX ||
+ ring->tx_pending < BE_TX_RING_MIN ||
+ ring->rx_pending < BE_RX_RING_MIN)
+ return -EINVAL;
+ if (ring->rx_mini_pending || ring->rx_jumbo_pending)
+ return -EINVAL;
+
+ if (netif_running(ndev)) {
+ netif_device_detach(ndev);
+ /* Stop PTP Clock driver */
+ if (info->gptp)
+ ravb_ptp_stop(ndev);
+ /* Wait for DMA stopping */
+ error = ravb_stop_dma(ndev);
+ if (error) {
+ netdev_err(ndev,
+ "cannot set ringparam! Any AVB processes are still running?\n");
+ return error;
+ }
+ synchronize_irq(ndev->irq);
+
+ /* Free all the skb's in the RX queue and the DMA buffers. */
+ ravb_ring_free(ndev, RAVB_BE);
+ if (info->nc_queues)
+ ravb_ring_free(ndev, RAVB_NC);
+ }
+
+ /* Set new parameters */
+ priv->num_rx_ring[RAVB_BE] = ring->rx_pending;
+ priv->num_tx_ring[RAVB_BE] = ring->tx_pending;
+
+ if (netif_running(ndev)) {
+ error = ravb_dmac_init(ndev);
+ if (error) {
+ netdev_err(ndev,
+ "%s: ravb_dmac_init() failed, error %d\n",
+ __func__, error);
+ return error;
+ }
+
+ ravb_emac_init(ndev);
+
+ /* Initialise PTP Clock driver */
+ if (info->gptp)
+ ravb_ptp_init(ndev, priv->pdev);
+
+ netif_device_attach(ndev);
+ }
+
+ return 0;
+}
+
+static int ravb_get_ts_info(struct net_device *ndev,
+ struct ethtool_ts_info *info)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *hw_info = priv->info;
+
+ info->so_timestamping =
+ SOF_TIMESTAMPING_TX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE |
+ SOF_TIMESTAMPING_TX_HARDWARE |
+ SOF_TIMESTAMPING_RX_HARDWARE |
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+ info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
+ info->rx_filters =
+ (1 << HWTSTAMP_FILTER_NONE) |
+ (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
+ (1 << HWTSTAMP_FILTER_ALL);
+ if (hw_info->gptp || hw_info->ccc_gac)
+ info->phc_index = ptp_clock_index(priv->ptp.clock);
+
+ return 0;
+}
+
+static void ravb_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = priv->wol_enabled ? WAKE_MAGIC : 0;
+}
+
+static int ravb_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ if (!info->magic_pkt || (wol->wolopts & ~WAKE_MAGIC))
+ return -EOPNOTSUPP;
+
+ priv->wol_enabled = !!(wol->wolopts & WAKE_MAGIC);
+
+ device_set_wakeup_enable(&priv->pdev->dev, priv->wol_enabled);
+
+ return 0;
+}
+
+static const struct ethtool_ops ravb_ethtool_ops = {
+ .nway_reset = phy_ethtool_nway_reset,
+ .get_msglevel = ravb_get_msglevel,
+ .set_msglevel = ravb_set_msglevel,
+ .get_link = ethtool_op_get_link,
+ .get_strings = ravb_get_strings,
+ .get_ethtool_stats = ravb_get_ethtool_stats,
+ .get_sset_count = ravb_get_sset_count,
+ .get_ringparam = ravb_get_ringparam,
+ .set_ringparam = ravb_set_ringparam,
+ .get_ts_info = ravb_get_ts_info,
+ .get_link_ksettings = phy_ethtool_get_link_ksettings,
+ .set_link_ksettings = phy_ethtool_set_link_ksettings,
+ .get_wol = ravb_get_wol,
+ .set_wol = ravb_set_wol,
+};
+
+static inline int ravb_hook_irq(unsigned int irq, irq_handler_t handler,
+ struct net_device *ndev, struct device *dev,
+ const char *ch)
+{
+ char *name;
+ int error;
+
+ name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s", ndev->name, ch);
+ if (!name)
+ return -ENOMEM;
+ error = request_irq(irq, handler, 0, name, ndev);
+ if (error)
+ netdev_err(ndev, "cannot request IRQ %s\n", name);
+
+ return error;
+}
+
+/* Network device open function for Ethernet AVB */
+static int ravb_open(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ struct platform_device *pdev = priv->pdev;
+ struct device *dev = &pdev->dev;
+ int error;
+
+ napi_enable(&priv->napi[RAVB_BE]);
+ if (info->nc_queues)
+ napi_enable(&priv->napi[RAVB_NC]);
+
+ if (!info->multi_irqs) {
+ error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED,
+ ndev->name, ndev);
+ if (error) {
+ netdev_err(ndev, "cannot request IRQ\n");
+ goto out_napi_off;
+ }
+ } else {
+ error = ravb_hook_irq(ndev->irq, ravb_multi_interrupt, ndev,
+ dev, "ch22:multi");
+ if (error)
+ goto out_napi_off;
+ error = ravb_hook_irq(priv->emac_irq, ravb_emac_interrupt, ndev,
+ dev, "ch24:emac");
+ if (error)
+ goto out_free_irq;
+ error = ravb_hook_irq(priv->rx_irqs[RAVB_BE], ravb_be_interrupt,
+ ndev, dev, "ch0:rx_be");
+ if (error)
+ goto out_free_irq_emac;
+ error = ravb_hook_irq(priv->tx_irqs[RAVB_BE], ravb_be_interrupt,
+ ndev, dev, "ch18:tx_be");
+ if (error)
+ goto out_free_irq_be_rx;
+ error = ravb_hook_irq(priv->rx_irqs[RAVB_NC], ravb_nc_interrupt,
+ ndev, dev, "ch1:rx_nc");
+ if (error)
+ goto out_free_irq_be_tx;
+ error = ravb_hook_irq(priv->tx_irqs[RAVB_NC], ravb_nc_interrupt,
+ ndev, dev, "ch19:tx_nc");
+ if (error)
+ goto out_free_irq_nc_rx;
+
+ if (info->err_mgmt_irqs) {
+ error = ravb_hook_irq(priv->erra_irq, ravb_multi_interrupt,
+ ndev, dev, "err_a");
+ if (error)
+ goto out_free_irq_nc_tx;
+ error = ravb_hook_irq(priv->mgmta_irq, ravb_multi_interrupt,
+ ndev, dev, "mgmt_a");
+ if (error)
+ goto out_free_irq_erra;
+ }
+ }
+
+ /* Device init */
+ error = ravb_dmac_init(ndev);
+ if (error)
+ goto out_free_irq_mgmta;
+ ravb_emac_init(ndev);
+
+ /* Initialise PTP Clock driver */
+ if (info->gptp)
+ ravb_ptp_init(ndev, priv->pdev);
+
+ /* PHY control start */
+ error = ravb_phy_start(ndev);
+ if (error)
+ goto out_ptp_stop;
+
+ netif_tx_start_all_queues(ndev);
+
+ return 0;
+
+out_ptp_stop:
+ /* Stop PTP Clock driver */
+ if (info->gptp)
+ ravb_ptp_stop(ndev);
+ ravb_stop_dma(ndev);
+out_free_irq_mgmta:
+ if (!info->multi_irqs)
+ goto out_free_irq;
+ if (info->err_mgmt_irqs)
+ free_irq(priv->mgmta_irq, ndev);
+out_free_irq_erra:
+ if (info->err_mgmt_irqs)
+ free_irq(priv->erra_irq, ndev);
+out_free_irq_nc_tx:
+ free_irq(priv->tx_irqs[RAVB_NC], ndev);
+out_free_irq_nc_rx:
+ free_irq(priv->rx_irqs[RAVB_NC], ndev);
+out_free_irq_be_tx:
+ free_irq(priv->tx_irqs[RAVB_BE], ndev);
+out_free_irq_be_rx:
+ free_irq(priv->rx_irqs[RAVB_BE], ndev);
+out_free_irq_emac:
+ free_irq(priv->emac_irq, ndev);
+out_free_irq:
+ free_irq(ndev->irq, ndev);
+out_napi_off:
+ if (info->nc_queues)
+ napi_disable(&priv->napi[RAVB_NC]);
+ napi_disable(&priv->napi[RAVB_BE]);
+ return error;
+}
+
+/* Timeout function for Ethernet AVB */
+static void ravb_tx_timeout(struct net_device *ndev, unsigned int txqueue)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ netif_err(priv, tx_err, ndev,
+ "transmit timed out, status %08x, resetting...\n",
+ ravb_read(ndev, ISS));
+
+ /* tx_errors count up */
+ ndev->stats.tx_errors++;
+
+ schedule_work(&priv->work);
+}
+
+static void ravb_tx_timeout_work(struct work_struct *work)
+{
+ struct ravb_private *priv = container_of(work, struct ravb_private,
+ work);
+ const struct ravb_hw_info *info = priv->info;
+ struct net_device *ndev = priv->ndev;
+ int error;
+
+ if (!rtnl_trylock()) {
+ usleep_range(1000, 2000);
+ schedule_work(&priv->work);
+ return;
+ }
+
+ netif_tx_stop_all_queues(ndev);
+
+ /* Stop PTP Clock driver */
+ if (info->gptp)
+ ravb_ptp_stop(ndev);
+
+ /* Wait for DMA stopping */
+ if (ravb_stop_dma(ndev)) {
+ /* If ravb_stop_dma() fails, the hardware is still operating
+ * for TX and/or RX. So, this should not call the following
+ * functions because ravb_dmac_init() is possible to fail too.
+ * Also, this should not retry ravb_stop_dma() again and again
+ * here because it's possible to wait forever. So, this just
+ * re-enables the TX and RX and skip the following
+ * re-initialization procedure.
+ */
+ ravb_rcv_snd_enable(ndev);
+ goto out;
+ }
+
+ ravb_ring_free(ndev, RAVB_BE);
+ if (info->nc_queues)
+ ravb_ring_free(ndev, RAVB_NC);
+
+ /* Device init */
+ error = ravb_dmac_init(ndev);
+ if (error) {
+ /* If ravb_dmac_init() fails, descriptors are freed. So, this
+ * should return here to avoid re-enabling the TX and RX in
+ * ravb_emac_init().
+ */
+ netdev_err(ndev, "%s: ravb_dmac_init() failed, error %d\n",
+ __func__, error);
+ goto out_unlock;
+ }
+ ravb_emac_init(ndev);
+
+out:
+ /* Initialise PTP Clock driver */
+ if (info->gptp)
+ ravb_ptp_init(ndev, priv->pdev);
+
+ netif_tx_start_all_queues(ndev);
+
+out_unlock:
+ rtnl_unlock();
+}
+
+/* Packet transmit function for Ethernet AVB */
+static netdev_tx_t ravb_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ unsigned int num_tx_desc = priv->num_tx_desc;
+ u16 q = skb_get_queue_mapping(skb);
+ struct ravb_tstamp_skb *ts_skb;
+ struct ravb_tx_desc *desc;
+ unsigned long flags;
+ dma_addr_t dma_addr;
+ void *buffer;
+ u32 entry;
+ u32 len;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (priv->cur_tx[q] - priv->dirty_tx[q] > (priv->num_tx_ring[q] - 1) *
+ num_tx_desc) {
+ netif_err(priv, tx_queued, ndev,
+ "still transmitting with the full ring!\n");
+ netif_stop_subqueue(ndev, q);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+
+ if (skb_put_padto(skb, ETH_ZLEN))
+ goto exit;
+
+ entry = priv->cur_tx[q] % (priv->num_tx_ring[q] * num_tx_desc);
+ priv->tx_skb[q][entry / num_tx_desc] = skb;
+
+ if (num_tx_desc > 1) {
+ buffer = PTR_ALIGN(priv->tx_align[q], DPTR_ALIGN) +
+ entry / num_tx_desc * DPTR_ALIGN;
+ len = PTR_ALIGN(skb->data, DPTR_ALIGN) - skb->data;
+
+ /* Zero length DMA descriptors are problematic as they seem
+ * to terminate DMA transfers. Avoid them by simply using a
+ * length of DPTR_ALIGN (4) when skb data is aligned to
+ * DPTR_ALIGN.
+ *
+ * As skb is guaranteed to have at least ETH_ZLEN (60)
+ * bytes of data by the call to skb_put_padto() above this
+ * is safe with respect to both the length of the first DMA
+ * descriptor (len) overflowing the available data and the
+ * length of the second DMA descriptor (skb->len - len)
+ * being negative.
+ */
+ if (len == 0)
+ len = DPTR_ALIGN;
+
+ memcpy(buffer, skb->data, len);
+ dma_addr = dma_map_single(ndev->dev.parent, buffer, len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(ndev->dev.parent, dma_addr))
+ goto drop;
+
+ desc = &priv->tx_ring[q][entry];
+ desc->ds_tagl = cpu_to_le16(len);
+ desc->dptr = cpu_to_le32(dma_addr);
+
+ buffer = skb->data + len;
+ len = skb->len - len;
+ dma_addr = dma_map_single(ndev->dev.parent, buffer, len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(ndev->dev.parent, dma_addr))
+ goto unmap;
+
+ desc++;
+ } else {
+ desc = &priv->tx_ring[q][entry];
+ len = skb->len;
+ dma_addr = dma_map_single(ndev->dev.parent, skb->data, skb->len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(ndev->dev.parent, dma_addr))
+ goto drop;
+ }
+ desc->ds_tagl = cpu_to_le16(len);
+ desc->dptr = cpu_to_le32(dma_addr);
+
+ /* TX timestamp required */
+ if (info->gptp || info->ccc_gac) {
+ if (q == RAVB_NC) {
+ ts_skb = kmalloc(sizeof(*ts_skb), GFP_ATOMIC);
+ if (!ts_skb) {
+ if (num_tx_desc > 1) {
+ desc--;
+ dma_unmap_single(ndev->dev.parent, dma_addr,
+ len, DMA_TO_DEVICE);
+ }
+ goto unmap;
+ }
+ ts_skb->skb = skb_get(skb);
+ ts_skb->tag = priv->ts_skb_tag++;
+ priv->ts_skb_tag &= 0x3ff;
+ list_add_tail(&ts_skb->list, &priv->ts_skb_list);
+
+ /* TAG and timestamp required flag */
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+ desc->tagh_tsr = (ts_skb->tag >> 4) | TX_TSR;
+ desc->ds_tagl |= cpu_to_le16(ts_skb->tag << 12);
+ }
+
+ skb_tx_timestamp(skb);
+ }
+ /* Descriptor type must be set after all the above writes */
+ dma_wmb();
+ if (num_tx_desc > 1) {
+ desc->die_dt = DT_FEND;
+ desc--;
+ desc->die_dt = DT_FSTART;
+ } else {
+ desc->die_dt = DT_FSINGLE;
+ }
+ ravb_modify(ndev, TCCR, TCCR_TSRQ0 << q, TCCR_TSRQ0 << q);
+
+ priv->cur_tx[q] += num_tx_desc;
+ if (priv->cur_tx[q] - priv->dirty_tx[q] >
+ (priv->num_tx_ring[q] - 1) * num_tx_desc &&
+ !ravb_tx_free(ndev, q, true))
+ netif_stop_subqueue(ndev, q);
+
+exit:
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return NETDEV_TX_OK;
+
+unmap:
+ dma_unmap_single(ndev->dev.parent, le32_to_cpu(desc->dptr),
+ le16_to_cpu(desc->ds_tagl), DMA_TO_DEVICE);
+drop:
+ dev_kfree_skb_any(skb);
+ priv->tx_skb[q][entry / num_tx_desc] = NULL;
+ goto exit;
+}
+
+static u16 ravb_select_queue(struct net_device *ndev, struct sk_buff *skb,
+ struct net_device *sb_dev)
+{
+ /* If skb needs TX timestamp, it is handled in network control queue */
+ return (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) ? RAVB_NC :
+ RAVB_BE;
+
+}
+
+static struct net_device_stats *ravb_get_stats(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ struct net_device_stats *nstats, *stats0, *stats1;
+
+ nstats = &ndev->stats;
+ stats0 = &priv->stats[RAVB_BE];
+
+ if (info->tx_counters) {
+ nstats->tx_dropped += ravb_read(ndev, TROCR);
+ ravb_write(ndev, 0, TROCR); /* (write clear) */
+ }
+
+ if (info->carrier_counters) {
+ nstats->collisions += ravb_read(ndev, CXR41);
+ ravb_write(ndev, 0, CXR41); /* (write clear) */
+ nstats->tx_carrier_errors += ravb_read(ndev, CXR42);
+ ravb_write(ndev, 0, CXR42); /* (write clear) */
+ }
+
+ nstats->rx_packets = stats0->rx_packets;
+ nstats->tx_packets = stats0->tx_packets;
+ nstats->rx_bytes = stats0->rx_bytes;
+ nstats->tx_bytes = stats0->tx_bytes;
+ nstats->multicast = stats0->multicast;
+ nstats->rx_errors = stats0->rx_errors;
+ nstats->rx_crc_errors = stats0->rx_crc_errors;
+ nstats->rx_frame_errors = stats0->rx_frame_errors;
+ nstats->rx_length_errors = stats0->rx_length_errors;
+ nstats->rx_missed_errors = stats0->rx_missed_errors;
+ nstats->rx_over_errors = stats0->rx_over_errors;
+ if (info->nc_queues) {
+ stats1 = &priv->stats[RAVB_NC];
+
+ nstats->rx_packets += stats1->rx_packets;
+ nstats->tx_packets += stats1->tx_packets;
+ nstats->rx_bytes += stats1->rx_bytes;
+ nstats->tx_bytes += stats1->tx_bytes;
+ nstats->multicast += stats1->multicast;
+ nstats->rx_errors += stats1->rx_errors;
+ nstats->rx_crc_errors += stats1->rx_crc_errors;
+ nstats->rx_frame_errors += stats1->rx_frame_errors;
+ nstats->rx_length_errors += stats1->rx_length_errors;
+ nstats->rx_missed_errors += stats1->rx_missed_errors;
+ nstats->rx_over_errors += stats1->rx_over_errors;
+ }
+
+ return nstats;
+}
+
+/* Update promiscuous bit */
+static void ravb_set_rx_mode(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ ravb_modify(ndev, ECMR, ECMR_PRM,
+ ndev->flags & IFF_PROMISC ? ECMR_PRM : 0);
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+/* Device close function for Ethernet AVB */
+static int ravb_close(struct net_device *ndev)
+{
+ struct device_node *np = ndev->dev.parent->of_node;
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ struct ravb_tstamp_skb *ts_skb, *ts_skb2;
+
+ netif_tx_stop_all_queues(ndev);
+
+ /* Disable interrupts by clearing the interrupt masks. */
+ ravb_write(ndev, 0, RIC0);
+ ravb_write(ndev, 0, RIC2);
+ ravb_write(ndev, 0, TIC);
+
+ /* Stop PTP Clock driver */
+ if (info->gptp)
+ ravb_ptp_stop(ndev);
+
+ /* Set the config mode to stop the AVB-DMAC's processes */
+ if (ravb_stop_dma(ndev) < 0)
+ netdev_err(ndev,
+ "device will be stopped after h/w processes are done.\n");
+
+ /* Clear the timestamp list */
+ if (info->gptp || info->ccc_gac) {
+ list_for_each_entry_safe(ts_skb, ts_skb2, &priv->ts_skb_list, list) {
+ list_del(&ts_skb->list);
+ kfree_skb(ts_skb->skb);
+ kfree(ts_skb);
+ }
+ }
+
+ /* PHY disconnect */
+ if (ndev->phydev) {
+ phy_stop(ndev->phydev);
+ phy_disconnect(ndev->phydev);
+ if (of_phy_is_fixed_link(np))
+ of_phy_deregister_fixed_link(np);
+ }
+
+ cancel_work_sync(&priv->work);
+
+ if (info->multi_irqs) {
+ free_irq(priv->tx_irqs[RAVB_NC], ndev);
+ free_irq(priv->rx_irqs[RAVB_NC], ndev);
+ free_irq(priv->tx_irqs[RAVB_BE], ndev);
+ free_irq(priv->rx_irqs[RAVB_BE], ndev);
+ free_irq(priv->emac_irq, ndev);
+ if (info->err_mgmt_irqs) {
+ free_irq(priv->erra_irq, ndev);
+ free_irq(priv->mgmta_irq, ndev);
+ }
+ }
+ free_irq(ndev->irq, ndev);
+
+ if (info->nc_queues)
+ napi_disable(&priv->napi[RAVB_NC]);
+ napi_disable(&priv->napi[RAVB_BE]);
+
+ /* Free all the skb's in the RX queue and the DMA buffers. */
+ ravb_ring_free(ndev, RAVB_BE);
+ if (info->nc_queues)
+ ravb_ring_free(ndev, RAVB_NC);
+
+ return 0;
+}
+
+static int ravb_hwtstamp_get(struct net_device *ndev, struct ifreq *req)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ struct hwtstamp_config config;
+
+ config.flags = 0;
+ config.tx_type = priv->tstamp_tx_ctrl ? HWTSTAMP_TX_ON :
+ HWTSTAMP_TX_OFF;
+ switch (priv->tstamp_rx_ctrl & RAVB_RXTSTAMP_TYPE) {
+ case RAVB_RXTSTAMP_TYPE_V2_L2_EVENT:
+ config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
+ break;
+ case RAVB_RXTSTAMP_TYPE_ALL:
+ config.rx_filter = HWTSTAMP_FILTER_ALL;
+ break;
+ default:
+ config.rx_filter = HWTSTAMP_FILTER_NONE;
+ }
+
+ return copy_to_user(req->ifr_data, &config, sizeof(config)) ?
+ -EFAULT : 0;
+}
+
+/* Control hardware time stamping */
+static int ravb_hwtstamp_set(struct net_device *ndev, struct ifreq *req)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ struct hwtstamp_config config;
+ u32 tstamp_rx_ctrl = RAVB_RXTSTAMP_ENABLED;
+ u32 tstamp_tx_ctrl;
+
+ if (copy_from_user(&config, req->ifr_data, sizeof(config)))
+ return -EFAULT;
+
+ switch (config.tx_type) {
+ case HWTSTAMP_TX_OFF:
+ tstamp_tx_ctrl = 0;
+ break;
+ case HWTSTAMP_TX_ON:
+ tstamp_tx_ctrl = RAVB_TXTSTAMP_ENABLED;
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ switch (config.rx_filter) {
+ case HWTSTAMP_FILTER_NONE:
+ tstamp_rx_ctrl = 0;
+ break;
+ case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+ tstamp_rx_ctrl |= RAVB_RXTSTAMP_TYPE_V2_L2_EVENT;
+ break;
+ default:
+ config.rx_filter = HWTSTAMP_FILTER_ALL;
+ tstamp_rx_ctrl |= RAVB_RXTSTAMP_TYPE_ALL;
+ }
+
+ priv->tstamp_tx_ctrl = tstamp_tx_ctrl;
+ priv->tstamp_rx_ctrl = tstamp_rx_ctrl;
+
+ return copy_to_user(req->ifr_data, &config, sizeof(config)) ?
+ -EFAULT : 0;
+}
+
+/* ioctl to device function */
+static int ravb_do_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
+{
+ struct phy_device *phydev = ndev->phydev;
+
+ if (!netif_running(ndev))
+ return -EINVAL;
+
+ if (!phydev)
+ return -ENODEV;
+
+ switch (cmd) {
+ case SIOCGHWTSTAMP:
+ return ravb_hwtstamp_get(ndev, req);
+ case SIOCSHWTSTAMP:
+ return ravb_hwtstamp_set(ndev, req);
+ }
+
+ return phy_mii_ioctl(phydev, req, cmd);
+}
+
+static int ravb_change_mtu(struct net_device *ndev, int new_mtu)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ ndev->mtu = new_mtu;
+
+ if (netif_running(ndev)) {
+ synchronize_irq(priv->emac_irq);
+ ravb_emac_init(ndev);
+ }
+
+ netdev_update_features(ndev);
+
+ return 0;
+}
+
+static void ravb_set_rx_csum(struct net_device *ndev, bool enable)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ /* Disable TX and RX */
+ ravb_rcv_snd_disable(ndev);
+
+ /* Modify RX Checksum setting */
+ ravb_modify(ndev, ECMR, ECMR_RCSC, enable ? ECMR_RCSC : 0);
+
+ /* Enable TX and RX */
+ ravb_rcv_snd_enable(ndev);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static int ravb_set_features_gbeth(struct net_device *ndev,
+ netdev_features_t features)
+{
+ /* Place holder */
+ return 0;
+}
+
+static int ravb_set_features_rcar(struct net_device *ndev,
+ netdev_features_t features)
+{
+ netdev_features_t changed = ndev->features ^ features;
+
+ if (changed & NETIF_F_RXCSUM)
+ ravb_set_rx_csum(ndev, features & NETIF_F_RXCSUM);
+
+ ndev->features = features;
+
+ return 0;
+}
+
+static int ravb_set_features(struct net_device *ndev,
+ netdev_features_t features)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ return info->set_feature(ndev, features);
+}
+
+static const struct net_device_ops ravb_netdev_ops = {
+ .ndo_open = ravb_open,
+ .ndo_stop = ravb_close,
+ .ndo_start_xmit = ravb_start_xmit,
+ .ndo_select_queue = ravb_select_queue,
+ .ndo_get_stats = ravb_get_stats,
+ .ndo_set_rx_mode = ravb_set_rx_mode,
+ .ndo_tx_timeout = ravb_tx_timeout,
+ .ndo_eth_ioctl = ravb_do_ioctl,
+ .ndo_change_mtu = ravb_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_set_features = ravb_set_features,
+};
+
+/* MDIO bus init function */
+static int ravb_mdio_init(struct ravb_private *priv)
+{
+ struct platform_device *pdev = priv->pdev;
+ struct device *dev = &pdev->dev;
+ struct phy_device *phydev;
+ struct device_node *pn;
+ int error;
+
+ /* Bitbang init */
+ priv->mdiobb.ops = &bb_ops;
+
+ /* MII controller setting */
+ priv->mii_bus = alloc_mdio_bitbang(&priv->mdiobb);
+ if (!priv->mii_bus)
+ return -ENOMEM;
+
+ /* Hook up MII support for ethtool */
+ priv->mii_bus->name = "ravb_mii";
+ priv->mii_bus->parent = dev;
+ snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+ pdev->name, pdev->id);
+
+ /* Register MDIO bus */
+ error = of_mdiobus_register(priv->mii_bus, dev->of_node);
+ if (error)
+ goto out_free_bus;
+
+ pn = of_parse_phandle(dev->of_node, "phy-handle", 0);
+ phydev = of_phy_find_device(pn);
+ if (phydev) {
+ phydev->mac_managed_pm = true;
+ put_device(&phydev->mdio.dev);
+ }
+ of_node_put(pn);
+
+ return 0;
+
+out_free_bus:
+ free_mdio_bitbang(priv->mii_bus);
+ return error;
+}
+
+/* MDIO bus release function */
+static int ravb_mdio_release(struct ravb_private *priv)
+{
+ /* Unregister mdio bus */
+ mdiobus_unregister(priv->mii_bus);
+
+ /* Free bitbang info */
+ free_mdio_bitbang(priv->mii_bus);
+
+ return 0;
+}
+
+static const struct ravb_hw_info ravb_gen3_hw_info = {
+ .rx_ring_free = ravb_rx_ring_free_rcar,
+ .rx_ring_format = ravb_rx_ring_format_rcar,
+ .alloc_rx_desc = ravb_alloc_rx_desc_rcar,
+ .receive = ravb_rx_rcar,
+ .set_rate = ravb_set_rate_rcar,
+ .set_feature = ravb_set_features_rcar,
+ .dmac_init = ravb_dmac_init_rcar,
+ .emac_init = ravb_emac_init_rcar,
+ .gstrings_stats = ravb_gstrings_stats,
+ .gstrings_size = sizeof(ravb_gstrings_stats),
+ .net_hw_features = NETIF_F_RXCSUM,
+ .net_features = NETIF_F_RXCSUM,
+ .stats_len = ARRAY_SIZE(ravb_gstrings_stats),
+ .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
+ .tccr_mask = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
+ .rx_max_buf_size = SZ_2K,
+ .internal_delay = 1,
+ .tx_counters = 1,
+ .multi_irqs = 1,
+ .irq_en_dis = 1,
+ .ccc_gac = 1,
+ .nc_queues = 1,
+ .magic_pkt = 1,
+};
+
+static const struct ravb_hw_info ravb_gen2_hw_info = {
+ .rx_ring_free = ravb_rx_ring_free_rcar,
+ .rx_ring_format = ravb_rx_ring_format_rcar,
+ .alloc_rx_desc = ravb_alloc_rx_desc_rcar,
+ .receive = ravb_rx_rcar,
+ .set_rate = ravb_set_rate_rcar,
+ .set_feature = ravb_set_features_rcar,
+ .dmac_init = ravb_dmac_init_rcar,
+ .emac_init = ravb_emac_init_rcar,
+ .gstrings_stats = ravb_gstrings_stats,
+ .gstrings_size = sizeof(ravb_gstrings_stats),
+ .net_hw_features = NETIF_F_RXCSUM,
+ .net_features = NETIF_F_RXCSUM,
+ .stats_len = ARRAY_SIZE(ravb_gstrings_stats),
+ .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
+ .tccr_mask = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
+ .rx_max_buf_size = SZ_2K,
+ .aligned_tx = 1,
+ .gptp = 1,
+ .nc_queues = 1,
+ .magic_pkt = 1,
+};
+
+static const struct ravb_hw_info ravb_rzv2m_hw_info = {
+ .rx_ring_free = ravb_rx_ring_free_rcar,
+ .rx_ring_format = ravb_rx_ring_format_rcar,
+ .alloc_rx_desc = ravb_alloc_rx_desc_rcar,
+ .receive = ravb_rx_rcar,
+ .set_rate = ravb_set_rate_rcar,
+ .set_feature = ravb_set_features_rcar,
+ .dmac_init = ravb_dmac_init_rcar,
+ .emac_init = ravb_emac_init_rcar,
+ .gstrings_stats = ravb_gstrings_stats,
+ .gstrings_size = sizeof(ravb_gstrings_stats),
+ .net_hw_features = NETIF_F_RXCSUM,
+ .net_features = NETIF_F_RXCSUM,
+ .stats_len = ARRAY_SIZE(ravb_gstrings_stats),
+ .max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
+ .tccr_mask = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
+ .rx_max_buf_size = SZ_2K,
+ .multi_irqs = 1,
+ .err_mgmt_irqs = 1,
+ .gptp = 1,
+ .gptp_ref_clk = 1,
+ .nc_queues = 1,
+ .magic_pkt = 1,
+};
+
+static const struct ravb_hw_info gbeth_hw_info = {
+ .rx_ring_free = ravb_rx_ring_free_gbeth,
+ .rx_ring_format = ravb_rx_ring_format_gbeth,
+ .alloc_rx_desc = ravb_alloc_rx_desc_gbeth,
+ .receive = ravb_rx_gbeth,
+ .set_rate = ravb_set_rate_gbeth,
+ .set_feature = ravb_set_features_gbeth,
+ .dmac_init = ravb_dmac_init_gbeth,
+ .emac_init = ravb_emac_init_gbeth,
+ .gstrings_stats = ravb_gstrings_stats_gbeth,
+ .gstrings_size = sizeof(ravb_gstrings_stats_gbeth),
+ .stats_len = ARRAY_SIZE(ravb_gstrings_stats_gbeth),
+ .max_rx_len = ALIGN(GBETH_RX_BUFF_MAX, RAVB_ALIGN),
+ .tccr_mask = TCCR_TSRQ0,
+ .rx_max_buf_size = SZ_8K,
+ .aligned_tx = 1,
+ .tx_counters = 1,
+ .carrier_counters = 1,
+ .half_duplex = 1,
+};
+
+static const struct of_device_id ravb_match_table[] = {
+ { .compatible = "renesas,etheravb-r8a7790", .data = &ravb_gen2_hw_info },
+ { .compatible = "renesas,etheravb-r8a7794", .data = &ravb_gen2_hw_info },
+ { .compatible = "renesas,etheravb-rcar-gen2", .data = &ravb_gen2_hw_info },
+ { .compatible = "renesas,etheravb-r8a7795", .data = &ravb_gen3_hw_info },
+ { .compatible = "renesas,etheravb-rcar-gen3", .data = &ravb_gen3_hw_info },
+ { .compatible = "renesas,etheravb-rcar-gen4", .data = &ravb_gen3_hw_info },
+ { .compatible = "renesas,etheravb-rzv2m", .data = &ravb_rzv2m_hw_info },
+ { .compatible = "renesas,rzg2l-gbeth", .data = &gbeth_hw_info },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ravb_match_table);
+
+static int ravb_set_gti(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ struct device *dev = ndev->dev.parent;
+ unsigned long rate;
+ uint64_t inc;
+
+ if (info->gptp_ref_clk)
+ rate = clk_get_rate(priv->gptp_clk);
+ else
+ rate = clk_get_rate(priv->clk);
+ if (!rate)
+ return -EINVAL;
+
+ inc = div64_ul(1000000000ULL << 20, rate);
+
+ if (inc < GTI_TIV_MIN || inc > GTI_TIV_MAX) {
+ dev_err(dev, "gti.tiv increment 0x%llx is outside the range 0x%x - 0x%x\n",
+ inc, GTI_TIV_MIN, GTI_TIV_MAX);
+ return -EINVAL;
+ }
+
+ ravb_write(ndev, inc, GTI);
+
+ return 0;
+}
+
+static int ravb_set_config_mode(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int error;
+
+ if (info->gptp) {
+ error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+ if (error)
+ return error;
+ /* Set CSEL value */
+ ravb_modify(ndev, CCC, CCC_CSEL, CCC_CSEL_HPB);
+ } else if (info->ccc_gac) {
+ error = ravb_set_opmode(ndev, CCC_OPC_CONFIG | CCC_GAC | CCC_CSEL_HPB);
+ } else {
+ error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+ }
+
+ return error;
+}
+
+/* Set tx and rx clock internal delay modes */
+static void ravb_parse_delay_mode(struct device_node *np, struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ bool explicit_delay = false;
+ u32 delay;
+
+ if (!of_property_read_u32(np, "rx-internal-delay-ps", &delay)) {
+ /* Valid values are 0 and 1800, according to DT bindings */
+ priv->rxcidm = !!delay;
+ explicit_delay = true;
+ }
+ if (!of_property_read_u32(np, "tx-internal-delay-ps", &delay)) {
+ /* Valid values are 0 and 2000, according to DT bindings */
+ priv->txcidm = !!delay;
+ explicit_delay = true;
+ }
+
+ if (explicit_delay)
+ return;
+
+ /* Fall back to legacy rgmii-*id behavior */
+ if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
+ priv->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID) {
+ priv->rxcidm = 1;
+ priv->rgmii_override = 1;
+ }
+
+ if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
+ priv->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) {
+ priv->txcidm = 1;
+ priv->rgmii_override = 1;
+ }
+}
+
+static void ravb_set_delay_mode(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ u32 set = 0;
+
+ if (priv->rxcidm)
+ set |= APSR_RDM;
+ if (priv->txcidm)
+ set |= APSR_TDM;
+ ravb_modify(ndev, APSR, APSR_RDM | APSR_TDM, set);
+}
+
+static int ravb_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const struct ravb_hw_info *info;
+ struct reset_control *rstc;
+ struct ravb_private *priv;
+ struct net_device *ndev;
+ int error, irq, q;
+ struct resource *res;
+ int i;
+
+ if (!np) {
+ dev_err(&pdev->dev,
+ "this driver is required to be instantiated from device tree\n");
+ return -EINVAL;
+ }
+
+ rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
+ if (IS_ERR(rstc))
+ return dev_err_probe(&pdev->dev, PTR_ERR(rstc),
+ "failed to get cpg reset\n");
+
+ ndev = alloc_etherdev_mqs(sizeof(struct ravb_private),
+ NUM_TX_QUEUE, NUM_RX_QUEUE);
+ if (!ndev)
+ return -ENOMEM;
+
+ info = of_device_get_match_data(&pdev->dev);
+
+ ndev->features = info->net_features;
+ ndev->hw_features = info->net_hw_features;
+
+ error = reset_control_deassert(rstc);
+ if (error)
+ goto out_free_netdev;
+
+ pm_runtime_enable(&pdev->dev);
+ error = pm_runtime_resume_and_get(&pdev->dev);
+ if (error < 0)
+ goto out_rpm_disable;
+
+ if (info->multi_irqs) {
+ if (info->err_mgmt_irqs)
+ irq = platform_get_irq_byname(pdev, "dia");
+ else
+ irq = platform_get_irq_byname(pdev, "ch22");
+ } else {
+ irq = platform_get_irq(pdev, 0);
+ }
+ if (irq < 0) {
+ error = irq;
+ goto out_release;
+ }
+ ndev->irq = irq;
+
+ SET_NETDEV_DEV(ndev, &pdev->dev);
+
+ priv = netdev_priv(ndev);
+ priv->info = info;
+ priv->rstc = rstc;
+ priv->ndev = ndev;
+ priv->pdev = pdev;
+ priv->num_tx_ring[RAVB_BE] = BE_TX_RING_SIZE;
+ priv->num_rx_ring[RAVB_BE] = BE_RX_RING_SIZE;
+ if (info->nc_queues) {
+ priv->num_tx_ring[RAVB_NC] = NC_TX_RING_SIZE;
+ priv->num_rx_ring[RAVB_NC] = NC_RX_RING_SIZE;
+ }
+
+ priv->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+ if (IS_ERR(priv->addr)) {
+ error = PTR_ERR(priv->addr);
+ goto out_release;
+ }
+
+ /* The Ether-specific entries in the device structure. */
+ ndev->base_addr = res->start;
+
+ spin_lock_init(&priv->lock);
+ INIT_WORK(&priv->work, ravb_tx_timeout_work);
+
+ error = of_get_phy_mode(np, &priv->phy_interface);
+ if (error && error != -ENODEV)
+ goto out_release;
+
+ priv->no_avb_link = of_property_read_bool(np, "renesas,no-ether-link");
+ priv->avb_link_active_low =
+ of_property_read_bool(np, "renesas,ether-link-active-low");
+
+ if (info->multi_irqs) {
+ if (info->err_mgmt_irqs)
+ irq = platform_get_irq_byname(pdev, "line3");
+ else
+ irq = platform_get_irq_byname(pdev, "ch24");
+ if (irq < 0) {
+ error = irq;
+ goto out_release;
+ }
+ priv->emac_irq = irq;
+ for (i = 0; i < NUM_RX_QUEUE; i++) {
+ irq = platform_get_irq_byname(pdev, ravb_rx_irqs[i]);
+ if (irq < 0) {
+ error = irq;
+ goto out_release;
+ }
+ priv->rx_irqs[i] = irq;
+ }
+ for (i = 0; i < NUM_TX_QUEUE; i++) {
+ irq = platform_get_irq_byname(pdev, ravb_tx_irqs[i]);
+ if (irq < 0) {
+ error = irq;
+ goto out_release;
+ }
+ priv->tx_irqs[i] = irq;
+ }
+
+ if (info->err_mgmt_irqs) {
+ irq = platform_get_irq_byname(pdev, "err_a");
+ if (irq < 0) {
+ error = irq;
+ goto out_release;
+ }
+ priv->erra_irq = irq;
+
+ irq = platform_get_irq_byname(pdev, "mgmt_a");
+ if (irq < 0) {
+ error = irq;
+ goto out_release;
+ }
+ priv->mgmta_irq = irq;
+ }
+ }
+
+ priv->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(priv->clk)) {
+ error = PTR_ERR(priv->clk);
+ goto out_release;
+ }
+
+ priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk");
+ if (IS_ERR(priv->refclk)) {
+ error = PTR_ERR(priv->refclk);
+ goto out_release;
+ }
+ clk_prepare_enable(priv->refclk);
+
+ if (info->gptp_ref_clk) {
+ priv->gptp_clk = devm_clk_get(&pdev->dev, "gptp");
+ if (IS_ERR(priv->gptp_clk)) {
+ error = PTR_ERR(priv->gptp_clk);
+ goto out_disable_refclk;
+ }
+ clk_prepare_enable(priv->gptp_clk);
+ }
+
+ ndev->max_mtu = info->rx_max_buf_size - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
+ ndev->min_mtu = ETH_MIN_MTU;
+
+ /* FIXME: R-Car Gen2 has 4byte alignment restriction for tx buffer
+ * Use two descriptor to handle such situation. First descriptor to
+ * handle aligned data buffer and second descriptor to handle the
+ * overflow data because of alignment.
+ */
+ priv->num_tx_desc = info->aligned_tx ? 2 : 1;
+
+ /* Set function */
+ ndev->netdev_ops = &ravb_netdev_ops;
+ ndev->ethtool_ops = &ravb_ethtool_ops;
+
+ /* Set AVB config mode */
+ error = ravb_set_config_mode(ndev);
+ if (error)
+ goto out_disable_gptp_clk;
+
+ if (info->gptp || info->ccc_gac) {
+ /* Set GTI value */
+ error = ravb_set_gti(ndev);
+ if (error)
+ goto out_disable_gptp_clk;
+
+ /* Request GTI loading */
+ ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
+ }
+
+ if (info->internal_delay) {
+ ravb_parse_delay_mode(np, ndev);
+ ravb_set_delay_mode(ndev);
+ }
+
+ /* Allocate descriptor base address table */
+ priv->desc_bat_size = sizeof(struct ravb_desc) * DBAT_ENTRY_NUM;
+ priv->desc_bat = dma_alloc_coherent(ndev->dev.parent, priv->desc_bat_size,
+ &priv->desc_bat_dma, GFP_KERNEL);
+ if (!priv->desc_bat) {
+ dev_err(&pdev->dev,
+ "Cannot allocate desc base address table (size %d bytes)\n",
+ priv->desc_bat_size);
+ error = -ENOMEM;
+ goto out_disable_gptp_clk;
+ }
+ for (q = RAVB_BE; q < DBAT_ENTRY_NUM; q++)
+ priv->desc_bat[q].die_dt = DT_EOS;
+ ravb_write(ndev, priv->desc_bat_dma, DBAT);
+
+ /* Initialise HW timestamp list */
+ INIT_LIST_HEAD(&priv->ts_skb_list);
+
+ /* Initialise PTP Clock driver */
+ if (info->ccc_gac)
+ ravb_ptp_init(ndev, pdev);
+
+ /* Debug message level */
+ priv->msg_enable = RAVB_DEF_MSG_ENABLE;
+
+ /* Read and set MAC address */
+ ravb_read_mac_address(np, ndev);
+ if (!is_valid_ether_addr(ndev->dev_addr)) {
+ dev_warn(&pdev->dev,
+ "no valid MAC address supplied, using a random one\n");
+ eth_hw_addr_random(ndev);
+ }
+
+ /* MDIO bus init */
+ error = ravb_mdio_init(priv);
+ if (error) {
+ dev_err(&pdev->dev, "failed to initialize MDIO\n");
+ goto out_dma_free;
+ }
+
+ netif_napi_add(ndev, &priv->napi[RAVB_BE], ravb_poll);
+ if (info->nc_queues)
+ netif_napi_add(ndev, &priv->napi[RAVB_NC], ravb_poll);
+
+ /* Network device register */
+ error = register_netdev(ndev);
+ if (error)
+ goto out_napi_del;
+
+ device_set_wakeup_capable(&pdev->dev, 1);
+
+ /* Print device information */
+ netdev_info(ndev, "Base address at %#x, %pM, IRQ %d.\n",
+ (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
+
+ platform_set_drvdata(pdev, ndev);
+
+ return 0;
+
+out_napi_del:
+ if (info->nc_queues)
+ netif_napi_del(&priv->napi[RAVB_NC]);
+
+ netif_napi_del(&priv->napi[RAVB_BE]);
+ ravb_mdio_release(priv);
+out_dma_free:
+ dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat,
+ priv->desc_bat_dma);
+
+ /* Stop PTP Clock driver */
+ if (info->ccc_gac)
+ ravb_ptp_stop(ndev);
+out_disable_gptp_clk:
+ clk_disable_unprepare(priv->gptp_clk);
+out_disable_refclk:
+ clk_disable_unprepare(priv->refclk);
+out_release:
+ pm_runtime_put(&pdev->dev);
+out_rpm_disable:
+ pm_runtime_disable(&pdev->dev);
+ reset_control_assert(rstc);
+out_free_netdev:
+ free_netdev(ndev);
+ return error;
+}
+
+static int ravb_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ unregister_netdev(ndev);
+ if (info->nc_queues)
+ netif_napi_del(&priv->napi[RAVB_NC]);
+ netif_napi_del(&priv->napi[RAVB_BE]);
+
+ ravb_mdio_release(priv);
+
+ /* Stop PTP Clock driver */
+ if (info->ccc_gac)
+ ravb_ptp_stop(ndev);
+
+ dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat,
+ priv->desc_bat_dma);
+
+ ravb_set_opmode(ndev, CCC_OPC_RESET);
+
+ clk_disable_unprepare(priv->gptp_clk);
+ clk_disable_unprepare(priv->refclk);
+
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ reset_control_assert(priv->rstc);
+ free_netdev(ndev);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static int ravb_wol_setup(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ /* Disable interrupts by clearing the interrupt masks. */
+ ravb_write(ndev, 0, RIC0);
+ ravb_write(ndev, 0, RIC2);
+ ravb_write(ndev, 0, TIC);
+
+ /* Only allow ECI interrupts */
+ synchronize_irq(priv->emac_irq);
+ if (info->nc_queues)
+ napi_disable(&priv->napi[RAVB_NC]);
+ napi_disable(&priv->napi[RAVB_BE]);
+ ravb_write(ndev, ECSIPR_MPDIP, ECSIPR);
+
+ /* Enable MagicPacket */
+ ravb_modify(ndev, ECMR, ECMR_MPDE, ECMR_MPDE);
+
+ return enable_irq_wake(priv->emac_irq);
+}
+
+static int ravb_wol_restore(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+
+ if (info->nc_queues)
+ napi_enable(&priv->napi[RAVB_NC]);
+ napi_enable(&priv->napi[RAVB_BE]);
+
+ /* Disable MagicPacket */
+ ravb_modify(ndev, ECMR, ECMR_MPDE, 0);
+
+ ravb_close(ndev);
+
+ return disable_irq_wake(priv->emac_irq);
+}
+
+static int __maybe_unused ravb_suspend(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct ravb_private *priv = netdev_priv(ndev);
+ int ret;
+
+ if (!netif_running(ndev))
+ return 0;
+
+ netif_device_detach(ndev);
+
+ if (priv->wol_enabled)
+ ret = ravb_wol_setup(ndev);
+ else
+ ret = ravb_close(ndev);
+
+ if (priv->info->ccc_gac)
+ ravb_ptp_stop(ndev);
+
+ return ret;
+}
+
+static int __maybe_unused ravb_resume(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int ret = 0;
+
+ /* If WoL is enabled set reset mode to rearm the WoL logic */
+ if (priv->wol_enabled) {
+ ret = ravb_set_opmode(ndev, CCC_OPC_RESET);
+ if (ret)
+ return ret;
+ }
+
+ /* All register have been reset to default values.
+ * Restore all registers which where setup at probe time and
+ * reopen device if it was running before system suspended.
+ */
+
+ /* Set AVB config mode */
+ ret = ravb_set_config_mode(ndev);
+ if (ret)
+ return ret;
+
+ if (info->gptp || info->ccc_gac) {
+ /* Set GTI value */
+ ret = ravb_set_gti(ndev);
+ if (ret)
+ return ret;
+
+ /* Request GTI loading */
+ ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
+ }
+
+ if (info->internal_delay)
+ ravb_set_delay_mode(ndev);
+
+ /* Restore descriptor base address table */
+ ravb_write(ndev, priv->desc_bat_dma, DBAT);
+
+ if (priv->info->ccc_gac)
+ ravb_ptp_init(ndev, priv->pdev);
+
+ if (netif_running(ndev)) {
+ if (priv->wol_enabled) {
+ ret = ravb_wol_restore(ndev);
+ if (ret)
+ return ret;
+ }
+ ret = ravb_open(ndev);
+ if (ret < 0)
+ return ret;
+ ravb_set_rx_mode(ndev);
+ netif_device_attach(ndev);
+ }
+
+ return ret;
+}
+
+static int __maybe_unused ravb_runtime_nop(struct device *dev)
+{
+ /* Runtime PM callback shared between ->runtime_suspend()
+ * and ->runtime_resume(). Simply returns success.
+ *
+ * This driver re-initializes all registers after
+ * pm_runtime_get_sync() anyway so there is no need
+ * to save and restore registers here.
+ */
+ return 0;
+}
+
+static const struct dev_pm_ops ravb_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(ravb_suspend, ravb_resume)
+ SET_RUNTIME_PM_OPS(ravb_runtime_nop, ravb_runtime_nop, NULL)
+};
+
+static struct platform_driver ravb_driver = {
+ .probe = ravb_probe,
+ .remove = ravb_remove,
+ .driver = {
+ .name = "ravb",
+ .pm = &ravb_dev_pm_ops,
+ .of_match_table = ravb_match_table,
+ },
+};
+
+module_platform_driver(ravb_driver);
+
+MODULE_AUTHOR("Mitsuhiro Kimura, Masaru Nagai");
+MODULE_DESCRIPTION("Renesas Ethernet AVB driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/net/ethernet/renesas/ravb_ptp.c b/drivers/net/ethernet/renesas/ravb_ptp.c
new file mode 100644
index 000000000..87c4306d6
--- /dev/null
+++ b/drivers/net/ethernet/renesas/ravb_ptp.c
@@ -0,0 +1,358 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* PTP 1588 clock using the Renesas Ethernet AVB
+ *
+ * Copyright (C) 2013-2015 Renesas Electronics Corporation
+ * Copyright (C) 2015 Renesas Solutions Corp.
+ * Copyright (C) 2015-2016 Cogent Embedded, Inc. <source@cogentembedded.com>
+ */
+
+#include "ravb.h"
+
+static int ravb_ptp_tcr_request(struct ravb_private *priv, u32 request)
+{
+ struct net_device *ndev = priv->ndev;
+ int error;
+
+ error = ravb_wait(ndev, GCCR, GCCR_TCR, GCCR_TCR_NOREQ);
+ if (error)
+ return error;
+
+ ravb_modify(ndev, GCCR, request, request);
+ return ravb_wait(ndev, GCCR, GCCR_TCR, GCCR_TCR_NOREQ);
+}
+
+/* Caller must hold the lock */
+static int ravb_ptp_time_read(struct ravb_private *priv, struct timespec64 *ts)
+{
+ struct net_device *ndev = priv->ndev;
+ int error;
+
+ error = ravb_ptp_tcr_request(priv, GCCR_TCR_CAPTURE);
+ if (error)
+ return error;
+
+ ts->tv_nsec = ravb_read(ndev, GCT0);
+ ts->tv_sec = ravb_read(ndev, GCT1) |
+ ((s64)ravb_read(ndev, GCT2) << 32);
+
+ return 0;
+}
+
+/* Caller must hold the lock */
+static int ravb_ptp_time_write(struct ravb_private *priv,
+ const struct timespec64 *ts)
+{
+ struct net_device *ndev = priv->ndev;
+ int error;
+ u32 gccr;
+
+ error = ravb_ptp_tcr_request(priv, GCCR_TCR_RESET);
+ if (error)
+ return error;
+
+ gccr = ravb_read(ndev, GCCR);
+ if (gccr & GCCR_LTO)
+ return -EBUSY;
+ ravb_write(ndev, ts->tv_nsec, GTO0);
+ ravb_write(ndev, ts->tv_sec, GTO1);
+ ravb_write(ndev, (ts->tv_sec >> 32) & 0xffff, GTO2);
+ ravb_write(ndev, gccr | GCCR_LTO, GCCR);
+
+ return 0;
+}
+
+/* Caller must hold the lock */
+static int ravb_ptp_update_compare(struct ravb_private *priv, u32 ns)
+{
+ struct net_device *ndev = priv->ndev;
+ /* When the comparison value (GPTC.PTCV) is in range of
+ * [x-1 to x+1] (x is the configured increment value in
+ * GTI.TIV), it may happen that a comparison match is
+ * not detected when the timer wraps around.
+ */
+ u32 gti_ns_plus_1 = (priv->ptp.current_addend >> 20) + 1;
+ u32 gccr;
+
+ if (ns < gti_ns_plus_1)
+ ns = gti_ns_plus_1;
+ else if (ns > 0 - gti_ns_plus_1)
+ ns = 0 - gti_ns_plus_1;
+
+ gccr = ravb_read(ndev, GCCR);
+ if (gccr & GCCR_LPTC)
+ return -EBUSY;
+ ravb_write(ndev, ns, GPTC);
+ ravb_write(ndev, gccr | GCCR_LPTC, GCCR);
+
+ return 0;
+}
+
+/* PTP clock operations */
+static int ravb_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+{
+ struct ravb_private *priv = container_of(ptp, struct ravb_private,
+ ptp.info);
+ struct net_device *ndev = priv->ndev;
+ unsigned long flags;
+ u32 diff, addend;
+ bool neg_adj = false;
+ u32 gccr;
+
+ if (ppb < 0) {
+ neg_adj = true;
+ ppb = -ppb;
+ }
+ addend = priv->ptp.default_addend;
+ diff = div_u64((u64)addend * ppb, NSEC_PER_SEC);
+
+ addend = neg_adj ? addend - diff : addend + diff;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ priv->ptp.current_addend = addend;
+
+ gccr = ravb_read(ndev, GCCR);
+ if (gccr & GCCR_LTI) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return -EBUSY;
+ }
+ ravb_write(ndev, addend & GTI_TIV, GTI);
+ ravb_write(ndev, gccr | GCCR_LTI, GCCR);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+static int ravb_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+ struct ravb_private *priv = container_of(ptp, struct ravb_private,
+ ptp.info);
+ struct timespec64 ts;
+ unsigned long flags;
+ int error;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ error = ravb_ptp_time_read(priv, &ts);
+ if (!error) {
+ u64 now = ktime_to_ns(timespec64_to_ktime(ts));
+
+ ts = ns_to_timespec64(now + delta);
+ error = ravb_ptp_time_write(priv, &ts);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return error;
+}
+
+static int ravb_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts)
+{
+ struct ravb_private *priv = container_of(ptp, struct ravb_private,
+ ptp.info);
+ unsigned long flags;
+ int error;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ error = ravb_ptp_time_read(priv, ts);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return error;
+}
+
+static int ravb_ptp_settime64(struct ptp_clock_info *ptp,
+ const struct timespec64 *ts)
+{
+ struct ravb_private *priv = container_of(ptp, struct ravb_private,
+ ptp.info);
+ unsigned long flags;
+ int error;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ error = ravb_ptp_time_write(priv, ts);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return error;
+}
+
+static int ravb_ptp_extts(struct ptp_clock_info *ptp,
+ struct ptp_extts_request *req, int on)
+{
+ struct ravb_private *priv = container_of(ptp, struct ravb_private,
+ ptp.info);
+ const struct ravb_hw_info *info = priv->info;
+ struct net_device *ndev = priv->ndev;
+ unsigned long flags;
+
+ /* Reject requests with unsupported flags */
+ if (req->flags & ~(PTP_ENABLE_FEATURE |
+ PTP_RISING_EDGE |
+ PTP_FALLING_EDGE |
+ PTP_STRICT_FLAGS))
+ return -EOPNOTSUPP;
+
+ if (req->index)
+ return -EINVAL;
+
+ if (priv->ptp.extts[req->index] == on)
+ return 0;
+ priv->ptp.extts[req->index] = on;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!info->irq_en_dis)
+ ravb_modify(ndev, GIC, GIC_PTCE, on ? GIC_PTCE : 0);
+ else if (on)
+ ravb_write(ndev, GIE_PTCS, GIE);
+ else
+ ravb_write(ndev, GID_PTCD, GID);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+static int ravb_ptp_perout(struct ptp_clock_info *ptp,
+ struct ptp_perout_request *req, int on)
+{
+ struct ravb_private *priv = container_of(ptp, struct ravb_private,
+ ptp.info);
+ const struct ravb_hw_info *info = priv->info;
+ struct net_device *ndev = priv->ndev;
+ struct ravb_ptp_perout *perout;
+ unsigned long flags;
+ int error = 0;
+
+ /* Reject requests with unsupported flags */
+ if (req->flags)
+ return -EOPNOTSUPP;
+
+ if (req->index)
+ return -EINVAL;
+
+ if (on) {
+ u64 start_ns;
+ u64 period_ns;
+
+ start_ns = req->start.sec * NSEC_PER_SEC + req->start.nsec;
+ period_ns = req->period.sec * NSEC_PER_SEC + req->period.nsec;
+
+ if (start_ns > U32_MAX) {
+ netdev_warn(ndev,
+ "ptp: start value (nsec) is over limit. Maximum size of start is only 32 bits\n");
+ return -ERANGE;
+ }
+
+ if (period_ns > U32_MAX) {
+ netdev_warn(ndev,
+ "ptp: period value (nsec) is over limit. Maximum size of period is only 32 bits\n");
+ return -ERANGE;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ perout = &priv->ptp.perout[req->index];
+ perout->target = (u32)start_ns;
+ perout->period = (u32)period_ns;
+ error = ravb_ptp_update_compare(priv, (u32)start_ns);
+ if (!error) {
+ /* Unmask interrupt */
+ if (!info->irq_en_dis)
+ ravb_modify(ndev, GIC, GIC_PTME, GIC_PTME);
+ else
+ ravb_write(ndev, GIE_PTMS0, GIE);
+ }
+ } else {
+ spin_lock_irqsave(&priv->lock, flags);
+
+ perout = &priv->ptp.perout[req->index];
+ perout->period = 0;
+
+ /* Mask interrupt */
+ if (!info->irq_en_dis)
+ ravb_modify(ndev, GIC, GIC_PTME, 0);
+ else
+ ravb_write(ndev, GID_PTMD0, GID);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return error;
+}
+
+static int ravb_ptp_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *req, int on)
+{
+ switch (req->type) {
+ case PTP_CLK_REQ_EXTTS:
+ return ravb_ptp_extts(ptp, &req->extts, on);
+ case PTP_CLK_REQ_PEROUT:
+ return ravb_ptp_perout(ptp, &req->perout, on);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static const struct ptp_clock_info ravb_ptp_info = {
+ .owner = THIS_MODULE,
+ .name = "ravb clock",
+ .max_adj = 50000000,
+ .n_ext_ts = N_EXT_TS,
+ .n_per_out = N_PER_OUT,
+ .adjfreq = ravb_ptp_adjfreq,
+ .adjtime = ravb_ptp_adjtime,
+ .gettime64 = ravb_ptp_gettime64,
+ .settime64 = ravb_ptp_settime64,
+ .enable = ravb_ptp_enable,
+};
+
+/* Caller must hold the lock */
+void ravb_ptp_interrupt(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ u32 gis = ravb_read(ndev, GIS);
+
+ gis &= ravb_read(ndev, GIC);
+ if (gis & GIS_PTCF) {
+ struct ptp_clock_event event;
+
+ event.type = PTP_CLOCK_EXTTS;
+ event.index = 0;
+ event.timestamp = ravb_read(ndev, GCPT);
+ ptp_clock_event(priv->ptp.clock, &event);
+ }
+ if (gis & GIS_PTMF) {
+ struct ravb_ptp_perout *perout = priv->ptp.perout;
+
+ if (perout->period) {
+ perout->target += perout->period;
+ ravb_ptp_update_compare(priv, perout->target);
+ }
+ }
+
+ ravb_write(ndev, ~(gis | GIS_RESERVED), GIS);
+}
+
+void ravb_ptp_init(struct net_device *ndev, struct platform_device *pdev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+ unsigned long flags;
+
+ priv->ptp.info = ravb_ptp_info;
+
+ priv->ptp.default_addend = ravb_read(ndev, GTI);
+ priv->ptp.current_addend = priv->ptp.default_addend;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ ravb_wait(ndev, GCCR, GCCR_TCR, GCCR_TCR_NOREQ);
+ ravb_modify(ndev, GCCR, GCCR_TCSS, GCCR_TCSS_ADJGPTP);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ priv->ptp.clock = ptp_clock_register(&priv->ptp.info, &pdev->dev);
+}
+
+void ravb_ptp_stop(struct net_device *ndev)
+{
+ struct ravb_private *priv = netdev_priv(ndev);
+
+ ravb_write(ndev, 0, GIC);
+ ravb_write(ndev, 0, GIS);
+
+ ptp_clock_unregister(priv->ptp.clock);
+}
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
new file mode 100644
index 000000000..14dc5833c
--- /dev/null
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -0,0 +1,3555 @@
+// SPDX-License-Identifier: GPL-2.0
+/* SuperH Ethernet device driver
+ *
+ * Copyright (C) 2014 Renesas Electronics Corporation
+ * Copyright (C) 2006-2012 Nobuhiro Iwamatsu
+ * Copyright (C) 2008-2014 Renesas Solutions Corp.
+ * Copyright (C) 2013-2017 Cogent Embedded, Inc.
+ * Copyright (C) 2014 Codethink Limited
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/mdio-bitbang.h>
+#include <linux/netdevice.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/of_net.h>
+#include <linux/phy.h>
+#include <linux/cache.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/sh_eth.h>
+#include <linux/of_mdio.h>
+
+#include "sh_eth.h"
+
+#define SH_ETH_DEF_MSG_ENABLE \
+ (NETIF_MSG_LINK | \
+ NETIF_MSG_TIMER | \
+ NETIF_MSG_RX_ERR| \
+ NETIF_MSG_TX_ERR)
+
+#define SH_ETH_OFFSET_INVALID ((u16)~0)
+
+#define SH_ETH_OFFSET_DEFAULTS \
+ [0 ... SH_ETH_MAX_REGISTER_OFFSET - 1] = SH_ETH_OFFSET_INVALID
+
+/* use some intentionally tricky logic here to initialize the whole struct to
+ * 0xffff, but then override certain fields, requiring us to indicate that we
+ * "know" that there are overrides in this structure, and we'll need to disable
+ * that warning from W=1 builds. GCC has supported this option since 4.2.X, but
+ * the macros available to do this only define GCC 8.
+ */
+__diag_push();
+__diag_ignore(GCC, 8, "-Woverride-init",
+ "logic to initialize all and then override some is OK");
+static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
+ SH_ETH_OFFSET_DEFAULTS,
+
+ [EDSR] = 0x0000,
+ [EDMR] = 0x0400,
+ [EDTRR] = 0x0408,
+ [EDRRR] = 0x0410,
+ [EESR] = 0x0428,
+ [EESIPR] = 0x0430,
+ [TDLAR] = 0x0010,
+ [TDFAR] = 0x0014,
+ [TDFXR] = 0x0018,
+ [TDFFR] = 0x001c,
+ [RDLAR] = 0x0030,
+ [RDFAR] = 0x0034,
+ [RDFXR] = 0x0038,
+ [RDFFR] = 0x003c,
+ [TRSCER] = 0x0438,
+ [RMFCR] = 0x0440,
+ [TFTR] = 0x0448,
+ [FDR] = 0x0450,
+ [RMCR] = 0x0458,
+ [RPADIR] = 0x0460,
+ [FCFTR] = 0x0468,
+ [CSMR] = 0x04E4,
+
+ [ECMR] = 0x0500,
+ [ECSR] = 0x0510,
+ [ECSIPR] = 0x0518,
+ [PIR] = 0x0520,
+ [PSR] = 0x0528,
+ [PIPR] = 0x052c,
+ [RFLR] = 0x0508,
+ [APR] = 0x0554,
+ [MPR] = 0x0558,
+ [PFTCR] = 0x055c,
+ [PFRCR] = 0x0560,
+ [TPAUSER] = 0x0564,
+ [GECMR] = 0x05b0,
+ [BCULR] = 0x05b4,
+ [MAHR] = 0x05c0,
+ [MALR] = 0x05c8,
+ [TROCR] = 0x0700,
+ [CDCR] = 0x0708,
+ [LCCR] = 0x0710,
+ [CEFCR] = 0x0740,
+ [FRECR] = 0x0748,
+ [TSFRCR] = 0x0750,
+ [TLFRCR] = 0x0758,
+ [RFCR] = 0x0760,
+ [CERCR] = 0x0768,
+ [CEECR] = 0x0770,
+ [MAFCR] = 0x0778,
+ [RMII_MII] = 0x0790,
+
+ [ARSTR] = 0x0000,
+ [TSU_CTRST] = 0x0004,
+ [TSU_FWEN0] = 0x0010,
+ [TSU_FWEN1] = 0x0014,
+ [TSU_FCM] = 0x0018,
+ [TSU_BSYSL0] = 0x0020,
+ [TSU_BSYSL1] = 0x0024,
+ [TSU_PRISL0] = 0x0028,
+ [TSU_PRISL1] = 0x002c,
+ [TSU_FWSL0] = 0x0030,
+ [TSU_FWSL1] = 0x0034,
+ [TSU_FWSLC] = 0x0038,
+ [TSU_QTAGM0] = 0x0040,
+ [TSU_QTAGM1] = 0x0044,
+ [TSU_FWSR] = 0x0050,
+ [TSU_FWINMK] = 0x0054,
+ [TSU_ADQT0] = 0x0048,
+ [TSU_ADQT1] = 0x004c,
+ [TSU_VTAG0] = 0x0058,
+ [TSU_VTAG1] = 0x005c,
+ [TSU_ADSBSY] = 0x0060,
+ [TSU_TEN] = 0x0064,
+ [TSU_POST1] = 0x0070,
+ [TSU_POST2] = 0x0074,
+ [TSU_POST3] = 0x0078,
+ [TSU_POST4] = 0x007c,
+ [TSU_ADRH0] = 0x0100,
+
+ [TXNLCR0] = 0x0080,
+ [TXALCR0] = 0x0084,
+ [RXNLCR0] = 0x0088,
+ [RXALCR0] = 0x008c,
+ [FWNLCR0] = 0x0090,
+ [FWALCR0] = 0x0094,
+ [TXNLCR1] = 0x00a0,
+ [TXALCR1] = 0x00a4,
+ [RXNLCR1] = 0x00a8,
+ [RXALCR1] = 0x00ac,
+ [FWNLCR1] = 0x00b0,
+ [FWALCR1] = 0x00b4,
+};
+
+static const u16 sh_eth_offset_fast_rcar[SH_ETH_MAX_REGISTER_OFFSET] = {
+ SH_ETH_OFFSET_DEFAULTS,
+
+ [ECMR] = 0x0300,
+ [RFLR] = 0x0308,
+ [ECSR] = 0x0310,
+ [ECSIPR] = 0x0318,
+ [PIR] = 0x0320,
+ [PSR] = 0x0328,
+ [RDMLR] = 0x0340,
+ [IPGR] = 0x0350,
+ [APR] = 0x0354,
+ [MPR] = 0x0358,
+ [RFCF] = 0x0360,
+ [TPAUSER] = 0x0364,
+ [TPAUSECR] = 0x0368,
+ [MAHR] = 0x03c0,
+ [MALR] = 0x03c8,
+ [TROCR] = 0x03d0,
+ [CDCR] = 0x03d4,
+ [LCCR] = 0x03d8,
+ [CNDCR] = 0x03dc,
+ [CEFCR] = 0x03e4,
+ [FRECR] = 0x03e8,
+ [TSFRCR] = 0x03ec,
+ [TLFRCR] = 0x03f0,
+ [RFCR] = 0x03f4,
+ [MAFCR] = 0x03f8,
+
+ [EDMR] = 0x0200,
+ [EDTRR] = 0x0208,
+ [EDRRR] = 0x0210,
+ [TDLAR] = 0x0218,
+ [RDLAR] = 0x0220,
+ [EESR] = 0x0228,
+ [EESIPR] = 0x0230,
+ [TRSCER] = 0x0238,
+ [RMFCR] = 0x0240,
+ [TFTR] = 0x0248,
+ [FDR] = 0x0250,
+ [RMCR] = 0x0258,
+ [TFUCR] = 0x0264,
+ [RFOCR] = 0x0268,
+ [RMIIMODE] = 0x026c,
+ [FCFTR] = 0x0270,
+ [TRIMD] = 0x027c,
+};
+
+static const u16 sh_eth_offset_fast_sh4[SH_ETH_MAX_REGISTER_OFFSET] = {
+ SH_ETH_OFFSET_DEFAULTS,
+
+ [ECMR] = 0x0100,
+ [RFLR] = 0x0108,
+ [ECSR] = 0x0110,
+ [ECSIPR] = 0x0118,
+ [PIR] = 0x0120,
+ [PSR] = 0x0128,
+ [RDMLR] = 0x0140,
+ [IPGR] = 0x0150,
+ [APR] = 0x0154,
+ [MPR] = 0x0158,
+ [TPAUSER] = 0x0164,
+ [RFCF] = 0x0160,
+ [TPAUSECR] = 0x0168,
+ [BCFRR] = 0x016c,
+ [MAHR] = 0x01c0,
+ [MALR] = 0x01c8,
+ [TROCR] = 0x01d0,
+ [CDCR] = 0x01d4,
+ [LCCR] = 0x01d8,
+ [CNDCR] = 0x01dc,
+ [CEFCR] = 0x01e4,
+ [FRECR] = 0x01e8,
+ [TSFRCR] = 0x01ec,
+ [TLFRCR] = 0x01f0,
+ [RFCR] = 0x01f4,
+ [MAFCR] = 0x01f8,
+ [RTRATE] = 0x01fc,
+
+ [EDMR] = 0x0000,
+ [EDTRR] = 0x0008,
+ [EDRRR] = 0x0010,
+ [TDLAR] = 0x0018,
+ [RDLAR] = 0x0020,
+ [EESR] = 0x0028,
+ [EESIPR] = 0x0030,
+ [TRSCER] = 0x0038,
+ [RMFCR] = 0x0040,
+ [TFTR] = 0x0048,
+ [FDR] = 0x0050,
+ [RMCR] = 0x0058,
+ [TFUCR] = 0x0064,
+ [RFOCR] = 0x0068,
+ [FCFTR] = 0x0070,
+ [RPADIR] = 0x0078,
+ [TRIMD] = 0x007c,
+ [RBWAR] = 0x00c8,
+ [RDFAR] = 0x00cc,
+ [TBRAR] = 0x00d4,
+ [TDFAR] = 0x00d8,
+};
+
+static const u16 sh_eth_offset_fast_sh3_sh2[SH_ETH_MAX_REGISTER_OFFSET] = {
+ SH_ETH_OFFSET_DEFAULTS,
+
+ [EDMR] = 0x0000,
+ [EDTRR] = 0x0004,
+ [EDRRR] = 0x0008,
+ [TDLAR] = 0x000c,
+ [RDLAR] = 0x0010,
+ [EESR] = 0x0014,
+ [EESIPR] = 0x0018,
+ [TRSCER] = 0x001c,
+ [RMFCR] = 0x0020,
+ [TFTR] = 0x0024,
+ [FDR] = 0x0028,
+ [RMCR] = 0x002c,
+ [EDOCR] = 0x0030,
+ [FCFTR] = 0x0034,
+ [RPADIR] = 0x0038,
+ [TRIMD] = 0x003c,
+ [RBWAR] = 0x0040,
+ [RDFAR] = 0x0044,
+ [TBRAR] = 0x004c,
+ [TDFAR] = 0x0050,
+
+ [ECMR] = 0x0160,
+ [ECSR] = 0x0164,
+ [ECSIPR] = 0x0168,
+ [PIR] = 0x016c,
+ [MAHR] = 0x0170,
+ [MALR] = 0x0174,
+ [RFLR] = 0x0178,
+ [PSR] = 0x017c,
+ [TROCR] = 0x0180,
+ [CDCR] = 0x0184,
+ [LCCR] = 0x0188,
+ [CNDCR] = 0x018c,
+ [CEFCR] = 0x0194,
+ [FRECR] = 0x0198,
+ [TSFRCR] = 0x019c,
+ [TLFRCR] = 0x01a0,
+ [RFCR] = 0x01a4,
+ [MAFCR] = 0x01a8,
+ [IPGR] = 0x01b4,
+ [APR] = 0x01b8,
+ [MPR] = 0x01bc,
+ [TPAUSER] = 0x01c4,
+ [BCFR] = 0x01cc,
+
+ [ARSTR] = 0x0000,
+ [TSU_CTRST] = 0x0004,
+ [TSU_FWEN0] = 0x0010,
+ [TSU_FWEN1] = 0x0014,
+ [TSU_FCM] = 0x0018,
+ [TSU_BSYSL0] = 0x0020,
+ [TSU_BSYSL1] = 0x0024,
+ [TSU_PRISL0] = 0x0028,
+ [TSU_PRISL1] = 0x002c,
+ [TSU_FWSL0] = 0x0030,
+ [TSU_FWSL1] = 0x0034,
+ [TSU_FWSLC] = 0x0038,
+ [TSU_QTAGM0] = 0x0040,
+ [TSU_QTAGM1] = 0x0044,
+ [TSU_ADQT0] = 0x0048,
+ [TSU_ADQT1] = 0x004c,
+ [TSU_FWSR] = 0x0050,
+ [TSU_FWINMK] = 0x0054,
+ [TSU_ADSBSY] = 0x0060,
+ [TSU_TEN] = 0x0064,
+ [TSU_POST1] = 0x0070,
+ [TSU_POST2] = 0x0074,
+ [TSU_POST3] = 0x0078,
+ [TSU_POST4] = 0x007c,
+
+ [TXNLCR0] = 0x0080,
+ [TXALCR0] = 0x0084,
+ [RXNLCR0] = 0x0088,
+ [RXALCR0] = 0x008c,
+ [FWNLCR0] = 0x0090,
+ [FWALCR0] = 0x0094,
+ [TXNLCR1] = 0x00a0,
+ [TXALCR1] = 0x00a4,
+ [RXNLCR1] = 0x00a8,
+ [RXALCR1] = 0x00ac,
+ [FWNLCR1] = 0x00b0,
+ [FWALCR1] = 0x00b4,
+
+ [TSU_ADRH0] = 0x0100,
+};
+__diag_pop();
+
+static void sh_eth_rcv_snd_disable(struct net_device *ndev);
+static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev);
+
+static void sh_eth_write(struct net_device *ndev, u32 data, int enum_index)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u16 offset = mdp->reg_offset[enum_index];
+
+ if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+ return;
+
+ iowrite32(data, mdp->addr + offset);
+}
+
+static u32 sh_eth_read(struct net_device *ndev, int enum_index)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u16 offset = mdp->reg_offset[enum_index];
+
+ if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+ return ~0U;
+
+ return ioread32(mdp->addr + offset);
+}
+
+static void sh_eth_modify(struct net_device *ndev, int enum_index, u32 clear,
+ u32 set)
+{
+ sh_eth_write(ndev, (sh_eth_read(ndev, enum_index) & ~clear) | set,
+ enum_index);
+}
+
+static u16 sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index)
+{
+ return mdp->reg_offset[enum_index];
+}
+
+static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data,
+ int enum_index)
+{
+ u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
+
+ if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+ return;
+
+ iowrite32(data, mdp->tsu_addr + offset);
+}
+
+static u32 sh_eth_tsu_read(struct sh_eth_private *mdp, int enum_index)
+{
+ u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
+
+ if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
+ return ~0U;
+
+ return ioread32(mdp->tsu_addr + offset);
+}
+
+static void sh_eth_soft_swap(char *src, int len)
+{
+#ifdef __LITTLE_ENDIAN
+ u32 *p = (u32 *)src;
+ u32 *maxp = p + DIV_ROUND_UP(len, sizeof(u32));
+
+ for (; p < maxp; p++)
+ *p = swab32(*p);
+#endif
+}
+
+static void sh_eth_select_mii(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u32 value;
+
+ switch (mdp->phy_interface) {
+ case PHY_INTERFACE_MODE_RGMII ... PHY_INTERFACE_MODE_RGMII_TXID:
+ value = 0x3;
+ break;
+ case PHY_INTERFACE_MODE_GMII:
+ value = 0x2;
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ value = 0x1;
+ break;
+ case PHY_INTERFACE_MODE_RMII:
+ value = 0x0;
+ break;
+ default:
+ netdev_warn(ndev,
+ "PHY interface mode was not setup. Set to MII.\n");
+ value = 0x1;
+ break;
+ }
+
+ sh_eth_write(ndev, value, RMII_MII);
+}
+
+static void sh_eth_set_duplex(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ sh_eth_modify(ndev, ECMR, ECMR_DM, mdp->duplex ? ECMR_DM : 0);
+}
+
+static void sh_eth_chip_reset(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ /* reset device */
+ sh_eth_tsu_write(mdp, ARSTR_ARST, ARSTR);
+ mdelay(1);
+}
+
+static int sh_eth_soft_reset(struct net_device *ndev)
+{
+ sh_eth_modify(ndev, EDMR, EDMR_SRST_ETHER, EDMR_SRST_ETHER);
+ mdelay(3);
+ sh_eth_modify(ndev, EDMR, EDMR_SRST_ETHER, 0);
+
+ return 0;
+}
+
+static int sh_eth_check_soft_reset(struct net_device *ndev)
+{
+ int cnt;
+
+ for (cnt = 100; cnt > 0; cnt--) {
+ if (!(sh_eth_read(ndev, EDMR) & EDMR_SRST_GETHER))
+ return 0;
+ mdelay(1);
+ }
+
+ netdev_err(ndev, "Device reset failed\n");
+ return -ETIMEDOUT;
+}
+
+static int sh_eth_soft_reset_gether(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ sh_eth_write(ndev, EDSR_ENALL, EDSR);
+ sh_eth_modify(ndev, EDMR, EDMR_SRST_GETHER, EDMR_SRST_GETHER);
+
+ ret = sh_eth_check_soft_reset(ndev);
+ if (ret)
+ return ret;
+
+ /* Table Init */
+ sh_eth_write(ndev, 0, TDLAR);
+ sh_eth_write(ndev, 0, TDFAR);
+ sh_eth_write(ndev, 0, TDFXR);
+ sh_eth_write(ndev, 0, TDFFR);
+ sh_eth_write(ndev, 0, RDLAR);
+ sh_eth_write(ndev, 0, RDFAR);
+ sh_eth_write(ndev, 0, RDFXR);
+ sh_eth_write(ndev, 0, RDFFR);
+
+ /* Reset HW CRC register */
+ if (mdp->cd->csmr)
+ sh_eth_write(ndev, 0, CSMR);
+
+ /* Select MII mode */
+ if (mdp->cd->select_mii)
+ sh_eth_select_mii(ndev);
+
+ return ret;
+}
+
+static void sh_eth_set_rate_gether(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (WARN_ON(!mdp->cd->gecmr))
+ return;
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_write(ndev, GECMR_10, GECMR);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_write(ndev, GECMR_100, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ sh_eth_write(ndev, GECMR_1000, GECMR);
+ break;
+ }
+}
+
+#ifdef CONFIG_OF
+/* R7S72100 */
+static struct sh_eth_cpu_data r7s72100_data = {
+ .soft_reset = sh_eth_soft_reset_gether,
+
+ .chip_reset = sh_eth_chip_reset,
+ .set_duplex = sh_eth_set_duplex,
+
+ .register_type = SH_ETH_REG_GIGABIT,
+
+ .edtrr_trns = EDTRR_TRNS_GETHER,
+ .ecsr_value = ECSR_ICD,
+ .ecsipr_value = ECSIPR_ICDIP,
+ .eesipr_value = EESIPR_TWB1IP | EESIPR_TWBIP | EESIPR_TC1IP |
+ EESIPR_TABTIP | EESIPR_RABTIP | EESIPR_RFCOFIP |
+ EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ EESIPR_RMAFIP | EESIPR_RRFIP |
+ EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_TC1 | EESR_FTC,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+ EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+ EESR_TDE,
+ .fdr_value = 0x0000070f,
+
+ .trscer_err_mask = TRSCER_RMAFCE | TRSCER_RRFCE,
+
+ .no_psr = 1,
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .rpadir = 1,
+ .no_trimd = 1,
+ .no_ade = 1,
+ .xdfar_rw = 1,
+ .csmr = 1,
+ .rx_csum = 1,
+ .tsu = 1,
+ .no_tx_cntrs = 1,
+};
+
+static void sh_eth_chip_reset_r8a7740(struct net_device *ndev)
+{
+ sh_eth_chip_reset(ndev);
+
+ sh_eth_select_mii(ndev);
+}
+
+/* R8A7740 */
+static struct sh_eth_cpu_data r8a7740_data = {
+ .soft_reset = sh_eth_soft_reset_gether,
+
+ .chip_reset = sh_eth_chip_reset_r8a7740,
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_gether,
+
+ .register_type = SH_ETH_REG_GIGABIT,
+
+ .edtrr_trns = EDTRR_TRNS_GETHER,
+ .ecsr_value = ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ 0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+ EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+ EESIPR_CEEFIP | EESIPR_CELFIP |
+ EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_TC1 | EESR_FTC,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+ EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+ EESR_TDE,
+ .fdr_value = 0x0000070f,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .gecmr = 1,
+ .bculr = 1,
+ .hw_swap = 1,
+ .rpadir = 1,
+ .no_trimd = 1,
+ .no_ade = 1,
+ .xdfar_rw = 1,
+ .csmr = 1,
+ .rx_csum = 1,
+ .tsu = 1,
+ .select_mii = 1,
+ .magic = 1,
+ .cexcr = 1,
+};
+
+/* There is CPU dependent code */
+static void sh_eth_set_rate_rcar(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_modify(ndev, ECMR, ECMR_ELB, 0);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_modify(ndev, ECMR, ECMR_ELB, ECMR_ELB);
+ break;
+ }
+}
+
+/* R-Car Gen1 */
+static struct sh_eth_cpu_data rcar_gen1_data = {
+ .soft_reset = sh_eth_soft_reset,
+
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_rcar,
+
+ .register_type = SH_ETH_REG_FAST_RCAR,
+
+ .edtrr_trns = EDTRR_TRNS_ETHER,
+ .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
+ .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ EESIPR_RMAFIP | EESIPR_RRFIP |
+ EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+ .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+ .fdr_value = 0x00000f0f,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .no_xdfar = 1,
+};
+
+/* R-Car Gen2 and RZ/G1 */
+static struct sh_eth_cpu_data rcar_gen2_data = {
+ .soft_reset = sh_eth_soft_reset,
+
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_rcar,
+
+ .register_type = SH_ETH_REG_FAST_RCAR,
+
+ .edtrr_trns = EDTRR_TRNS_ETHER,
+ .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP |
+ ECSIPR_MPDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ EESIPR_RMAFIP | EESIPR_RRFIP |
+ EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+ .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+ .fdr_value = 0x00000f0f,
+
+ .trscer_err_mask = TRSCER_RMAFCE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .no_xdfar = 1,
+ .rmiimode = 1,
+ .magic = 1,
+};
+
+/* R8A77980 */
+static struct sh_eth_cpu_data r8a77980_data = {
+ .soft_reset = sh_eth_soft_reset_gether,
+
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_gether,
+
+ .register_type = SH_ETH_REG_GIGABIT,
+
+ .edtrr_trns = EDTRR_TRNS_GETHER,
+ .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP |
+ ECSIPR_MPDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ EESIPR_RMAFIP | EESIPR_RRFIP |
+ EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_FTC | EESR_CD | EESR_TRO,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+ EESR_RFE | EESR_RDE | EESR_RFRMER |
+ EESR_TFE | EESR_TDE | EESR_ECI,
+ .fdr_value = 0x0000070f,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .gecmr = 1,
+ .bculr = 1,
+ .hw_swap = 1,
+ .nbst = 1,
+ .rpadir = 1,
+ .no_trimd = 1,
+ .no_ade = 1,
+ .xdfar_rw = 1,
+ .csmr = 1,
+ .rx_csum = 1,
+ .select_mii = 1,
+ .magic = 1,
+ .cexcr = 1,
+};
+
+/* R7S9210 */
+static struct sh_eth_cpu_data r7s9210_data = {
+ .soft_reset = sh_eth_soft_reset,
+
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_rcar,
+
+ .register_type = SH_ETH_REG_FAST_SH4,
+
+ .edtrr_trns = EDTRR_TRNS_ETHER,
+ .ecsr_value = ECSR_ICD,
+ .ecsipr_value = ECSIPR_ICDIP,
+ .eesipr_value = EESIPR_TWBIP | EESIPR_TABTIP | EESIPR_RABTIP |
+ EESIPR_RFCOFIP | EESIPR_ECIIP | EESIPR_FTCIP |
+ EESIPR_TDEIP | EESIPR_TFUFIP | EESIPR_FRIP |
+ EESIPR_RDEIP | EESIPR_RFOFIP | EESIPR_CNDIP |
+ EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
+ EESIPR_RMAFIP | EESIPR_RRFIP | EESIPR_RTLFIP |
+ EESIPR_RTSFIP | EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+ .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+ .fdr_value = 0x0000070f,
+
+ .trscer_err_mask = TRSCER_RMAFCE | TRSCER_RRFCE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .rpadir = 1,
+ .no_ade = 1,
+ .xdfar_rw = 1,
+};
+#endif /* CONFIG_OF */
+
+static void sh_eth_set_rate_sh7724(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_modify(ndev, ECMR, ECMR_RTM, 0);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_modify(ndev, ECMR, ECMR_RTM, ECMR_RTM);
+ break;
+ }
+}
+
+/* SH7724 */
+static struct sh_eth_cpu_data sh7724_data = {
+ .soft_reset = sh_eth_soft_reset,
+
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_sh7724,
+
+ .register_type = SH_ETH_REG_FAST_SH4,
+
+ .edtrr_trns = EDTRR_TRNS_ETHER,
+ .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
+ .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ EESIPR_RMAFIP | EESIPR_RRFIP |
+ EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+ .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .rpadir = 1,
+};
+
+static void sh_eth_set_rate_sh7757(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_write(ndev, 0, RTRATE);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_write(ndev, 1, RTRATE);
+ break;
+ }
+}
+
+/* SH7757 */
+static struct sh_eth_cpu_data sh7757_data = {
+ .soft_reset = sh_eth_soft_reset,
+
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_sh7757,
+
+ .register_type = SH_ETH_REG_FAST_SH4,
+
+ .edtrr_trns = EDTRR_TRNS_ETHER,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ 0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+ EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+ EESIPR_CEEFIP | EESIPR_CELFIP |
+ EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
+ .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+ .irq_flags = IRQF_SHARED,
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .no_ade = 1,
+ .rpadir = 1,
+ .rtrate = 1,
+ .dual_port = 1,
+};
+
+#define SH_GIGA_ETH_BASE 0xfee00000UL
+#define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
+#define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
+static void sh_eth_chip_reset_giga(struct net_device *ndev)
+{
+ u32 mahr[2], malr[2];
+ int i;
+
+ /* save MAHR and MALR */
+ for (i = 0; i < 2; i++) {
+ malr[i] = ioread32((void *)GIGA_MALR(i));
+ mahr[i] = ioread32((void *)GIGA_MAHR(i));
+ }
+
+ sh_eth_chip_reset(ndev);
+
+ /* restore MAHR and MALR */
+ for (i = 0; i < 2; i++) {
+ iowrite32(malr[i], (void *)GIGA_MALR(i));
+ iowrite32(mahr[i], (void *)GIGA_MAHR(i));
+ }
+}
+
+static void sh_eth_set_rate_giga(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (WARN_ON(!mdp->cd->gecmr))
+ return;
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_write(ndev, 0x00000000, GECMR);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_write(ndev, 0x00000010, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ sh_eth_write(ndev, 0x00000020, GECMR);
+ break;
+ }
+}
+
+/* SH7757(GETHERC) */
+static struct sh_eth_cpu_data sh7757_data_giga = {
+ .soft_reset = sh_eth_soft_reset_gether,
+
+ .chip_reset = sh_eth_chip_reset_giga,
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_giga,
+
+ .register_type = SH_ETH_REG_GIGABIT,
+
+ .edtrr_trns = EDTRR_TRNS_GETHER,
+ .ecsr_value = ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ 0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+ EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+ EESIPR_CEEFIP | EESIPR_CELFIP |
+ EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_TC1 | EESR_FTC,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+ EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+ EESR_TDE,
+ .fdr_value = 0x0000072f,
+
+ .irq_flags = IRQF_SHARED,
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .gecmr = 1,
+ .bculr = 1,
+ .hw_swap = 1,
+ .rpadir = 1,
+ .no_trimd = 1,
+ .no_ade = 1,
+ .xdfar_rw = 1,
+ .tsu = 1,
+ .cexcr = 1,
+ .dual_port = 1,
+};
+
+/* SH7734 */
+static struct sh_eth_cpu_data sh7734_data = {
+ .soft_reset = sh_eth_soft_reset_gether,
+
+ .chip_reset = sh_eth_chip_reset,
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_gether,
+
+ .register_type = SH_ETH_REG_GIGABIT,
+
+ .edtrr_trns = EDTRR_TRNS_GETHER,
+ .ecsr_value = ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
+ EESIPR_RMAFIP | EESIPR_CEEFIP | EESIPR_CELFIP |
+ EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_TC1 | EESR_FTC,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+ EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
+ EESR_TDE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .gecmr = 1,
+ .bculr = 1,
+ .hw_swap = 1,
+ .no_trimd = 1,
+ .no_ade = 1,
+ .xdfar_rw = 1,
+ .tsu = 1,
+ .csmr = 1,
+ .rx_csum = 1,
+ .select_mii = 1,
+ .magic = 1,
+ .cexcr = 1,
+};
+
+/* SH7763 */
+static struct sh_eth_cpu_data sh7763_data = {
+ .soft_reset = sh_eth_soft_reset_gether,
+
+ .chip_reset = sh_eth_chip_reset,
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate_gether,
+
+ .register_type = SH_ETH_REG_GIGABIT,
+
+ .edtrr_trns = EDTRR_TRNS_GETHER,
+ .ecsr_value = ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
+ EESIPR_RMAFIP | EESIPR_CEEFIP | EESIPR_CELFIP |
+ EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .tx_check = EESR_TC1 | EESR_FTC,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .gecmr = 1,
+ .bculr = 1,
+ .hw_swap = 1,
+ .no_trimd = 1,
+ .no_ade = 1,
+ .xdfar_rw = 1,
+ .tsu = 1,
+ .irq_flags = IRQF_SHARED,
+ .magic = 1,
+ .cexcr = 1,
+ .rx_csum = 1,
+ .dual_port = 1,
+};
+
+static struct sh_eth_cpu_data sh7619_data = {
+ .soft_reset = sh_eth_soft_reset,
+
+ .register_type = SH_ETH_REG_FAST_SH3_SH2,
+
+ .edtrr_trns = EDTRR_TRNS_ETHER,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ 0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+ EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+ EESIPR_CEEFIP | EESIPR_CELFIP |
+ EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+};
+
+static struct sh_eth_cpu_data sh771x_data = {
+ .soft_reset = sh_eth_soft_reset,
+
+ .register_type = SH_ETH_REG_FAST_SH3_SH2,
+
+ .edtrr_trns = EDTRR_TRNS_ETHER,
+ .eesipr_value = EESIPR_RFCOFIP | EESIPR_ECIIP |
+ EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
+ EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
+ 0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
+ EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
+ EESIPR_CEEFIP | EESIPR_CELFIP |
+ EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
+ EESIPR_PREIP | EESIPR_CERFIP,
+
+ .trscer_err_mask = TRSCER_RMAFCE,
+
+ .tsu = 1,
+ .dual_port = 1,
+};
+
+static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
+{
+ if (!cd->ecsr_value)
+ cd->ecsr_value = DEFAULT_ECSR_INIT;
+
+ if (!cd->ecsipr_value)
+ cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
+
+ if (!cd->fcftr_value)
+ cd->fcftr_value = DEFAULT_FIFO_F_D_RFF |
+ DEFAULT_FIFO_F_D_RFD;
+
+ if (!cd->fdr_value)
+ cd->fdr_value = DEFAULT_FDR_INIT;
+
+ if (!cd->tx_check)
+ cd->tx_check = DEFAULT_TX_CHECK;
+
+ if (!cd->eesr_err_check)
+ cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
+
+ if (!cd->trscer_err_mask)
+ cd->trscer_err_mask = DEFAULT_TRSCER_ERR_MASK;
+}
+
+static void sh_eth_set_receive_align(struct sk_buff *skb)
+{
+ uintptr_t reserve = (uintptr_t)skb->data & (SH_ETH_RX_ALIGN - 1);
+
+ if (reserve)
+ skb_reserve(skb, SH_ETH_RX_ALIGN - reserve);
+}
+
+/* Program the hardware MAC address from dev->dev_addr. */
+static void update_mac_address(struct net_device *ndev)
+{
+ sh_eth_write(ndev,
+ (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
+ (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
+ sh_eth_write(ndev,
+ (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
+}
+
+/* Get MAC address from SuperH MAC address register
+ *
+ * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
+ * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
+ * When you want use this device, you must set MAC address in bootloader.
+ *
+ */
+static void read_mac_address(struct net_device *ndev, unsigned char *mac)
+{
+ if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
+ eth_hw_addr_set(ndev, mac);
+ } else {
+ u32 mahr = sh_eth_read(ndev, MAHR);
+ u32 malr = sh_eth_read(ndev, MALR);
+ u8 addr[ETH_ALEN];
+
+ addr[0] = (mahr >> 24) & 0xFF;
+ addr[1] = (mahr >> 16) & 0xFF;
+ addr[2] = (mahr >> 8) & 0xFF;
+ addr[3] = (mahr >> 0) & 0xFF;
+ addr[4] = (malr >> 8) & 0xFF;
+ addr[5] = (malr >> 0) & 0xFF;
+ eth_hw_addr_set(ndev, addr);
+ }
+}
+
+struct bb_info {
+ void (*set_gate)(void *addr);
+ struct mdiobb_ctrl ctrl;
+ void *addr;
+};
+
+static void sh_mdio_ctrl(struct mdiobb_ctrl *ctrl, u32 mask, int set)
+{
+ struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+ u32 pir;
+
+ if (bitbang->set_gate)
+ bitbang->set_gate(bitbang->addr);
+
+ pir = ioread32(bitbang->addr);
+ if (set)
+ pir |= mask;
+ else
+ pir &= ~mask;
+ iowrite32(pir, bitbang->addr);
+}
+
+/* Data I/O pin control */
+static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
+{
+ sh_mdio_ctrl(ctrl, PIR_MMD, bit);
+}
+
+/* Set bit data*/
+static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
+{
+ sh_mdio_ctrl(ctrl, PIR_MDO, bit);
+}
+
+/* Get bit data*/
+static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
+{
+ struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+ if (bitbang->set_gate)
+ bitbang->set_gate(bitbang->addr);
+
+ return (ioread32(bitbang->addr) & PIR_MDI) != 0;
+}
+
+/* MDC pin control */
+static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
+{
+ sh_mdio_ctrl(ctrl, PIR_MDC, bit);
+}
+
+/* mdio bus control struct */
+static const struct mdiobb_ops bb_ops = {
+ .owner = THIS_MODULE,
+ .set_mdc = sh_mdc_ctrl,
+ .set_mdio_dir = sh_mmd_ctrl,
+ .set_mdio_data = sh_set_mdio,
+ .get_mdio_data = sh_get_mdio,
+};
+
+/* free Tx skb function */
+static int sh_eth_tx_free(struct net_device *ndev, bool sent_only)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_txdesc *txdesc;
+ int free_num = 0;
+ int entry;
+ bool sent;
+
+ for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
+ entry = mdp->dirty_tx % mdp->num_tx_ring;
+ txdesc = &mdp->tx_ring[entry];
+ sent = !(txdesc->status & cpu_to_le32(TD_TACT));
+ if (sent_only && !sent)
+ break;
+ /* TACT bit must be checked before all the following reads */
+ dma_rmb();
+ netif_info(mdp, tx_done, ndev,
+ "tx entry %d status 0x%08x\n",
+ entry, le32_to_cpu(txdesc->status));
+ /* Free the original skb. */
+ if (mdp->tx_skbuff[entry]) {
+ dma_unmap_single(&mdp->pdev->dev,
+ le32_to_cpu(txdesc->addr),
+ le32_to_cpu(txdesc->len) >> 16,
+ DMA_TO_DEVICE);
+ dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
+ mdp->tx_skbuff[entry] = NULL;
+ free_num++;
+ }
+ txdesc->status = cpu_to_le32(TD_TFP);
+ if (entry >= mdp->num_tx_ring - 1)
+ txdesc->status |= cpu_to_le32(TD_TDLE);
+
+ if (sent) {
+ ndev->stats.tx_packets++;
+ ndev->stats.tx_bytes += le32_to_cpu(txdesc->len) >> 16;
+ }
+ }
+ return free_num;
+}
+
+/* free skb and descriptor buffer */
+static void sh_eth_ring_free(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ringsize, i;
+
+ if (mdp->rx_ring) {
+ for (i = 0; i < mdp->num_rx_ring; i++) {
+ if (mdp->rx_skbuff[i]) {
+ struct sh_eth_rxdesc *rxdesc = &mdp->rx_ring[i];
+
+ dma_unmap_single(&mdp->pdev->dev,
+ le32_to_cpu(rxdesc->addr),
+ ALIGN(mdp->rx_buf_sz, 32),
+ DMA_FROM_DEVICE);
+ }
+ }
+ ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
+ dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->rx_ring,
+ mdp->rx_desc_dma);
+ mdp->rx_ring = NULL;
+ }
+
+ /* Free Rx skb ringbuffer */
+ if (mdp->rx_skbuff) {
+ for (i = 0; i < mdp->num_rx_ring; i++)
+ dev_kfree_skb(mdp->rx_skbuff[i]);
+ }
+ kfree(mdp->rx_skbuff);
+ mdp->rx_skbuff = NULL;
+
+ if (mdp->tx_ring) {
+ sh_eth_tx_free(ndev, false);
+
+ ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
+ dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->tx_ring,
+ mdp->tx_desc_dma);
+ mdp->tx_ring = NULL;
+ }
+
+ /* Free Tx skb ringbuffer */
+ kfree(mdp->tx_skbuff);
+ mdp->tx_skbuff = NULL;
+}
+
+/* format skb and descriptor buffer */
+static void sh_eth_ring_format(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i;
+ struct sk_buff *skb;
+ struct sh_eth_rxdesc *rxdesc = NULL;
+ struct sh_eth_txdesc *txdesc = NULL;
+ int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring;
+ int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring;
+ int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
+ dma_addr_t dma_addr;
+ u32 buf_len;
+
+ mdp->cur_rx = 0;
+ mdp->cur_tx = 0;
+ mdp->dirty_rx = 0;
+ mdp->dirty_tx = 0;
+
+ memset(mdp->rx_ring, 0, rx_ringsize);
+
+ /* build Rx ring buffer */
+ for (i = 0; i < mdp->num_rx_ring; i++) {
+ /* skb */
+ mdp->rx_skbuff[i] = NULL;
+ skb = netdev_alloc_skb(ndev, skbuff_size);
+ if (skb == NULL)
+ break;
+ sh_eth_set_receive_align(skb);
+
+ /* The size of the buffer is a multiple of 32 bytes. */
+ buf_len = ALIGN(mdp->rx_buf_sz, 32);
+ dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, buf_len,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
+ kfree_skb(skb);
+ break;
+ }
+ mdp->rx_skbuff[i] = skb;
+
+ /* RX descriptor */
+ rxdesc = &mdp->rx_ring[i];
+ rxdesc->len = cpu_to_le32(buf_len << 16);
+ rxdesc->addr = cpu_to_le32(dma_addr);
+ rxdesc->status = cpu_to_le32(RD_RACT | RD_RFP);
+
+ /* Rx descriptor address set */
+ if (i == 0) {
+ sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
+ if (mdp->cd->xdfar_rw)
+ sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
+ }
+ }
+
+ mdp->dirty_rx = (u32) (i - mdp->num_rx_ring);
+
+ /* Mark the last entry as wrapping the ring. */
+ if (rxdesc)
+ rxdesc->status |= cpu_to_le32(RD_RDLE);
+
+ memset(mdp->tx_ring, 0, tx_ringsize);
+
+ /* build Tx ring buffer */
+ for (i = 0; i < mdp->num_tx_ring; i++) {
+ mdp->tx_skbuff[i] = NULL;
+ txdesc = &mdp->tx_ring[i];
+ txdesc->status = cpu_to_le32(TD_TFP);
+ txdesc->len = cpu_to_le32(0);
+ if (i == 0) {
+ /* Tx descriptor address set */
+ sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
+ if (mdp->cd->xdfar_rw)
+ sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
+ }
+ }
+
+ txdesc->status |= cpu_to_le32(TD_TDLE);
+}
+
+/* Get skb and descriptor buffer */
+static int sh_eth_ring_init(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int rx_ringsize, tx_ringsize;
+
+ /* +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
+ * card needs room to do 8 byte alignment, +2 so we can reserve
+ * the first 2 bytes, and +16 gets room for the status word from the
+ * card.
+ */
+ mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
+ (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
+ if (mdp->cd->rpadir)
+ mdp->rx_buf_sz += NET_IP_ALIGN;
+
+ /* Allocate RX and TX skb rings */
+ mdp->rx_skbuff = kcalloc(mdp->num_rx_ring, sizeof(*mdp->rx_skbuff),
+ GFP_KERNEL);
+ if (!mdp->rx_skbuff)
+ return -ENOMEM;
+
+ mdp->tx_skbuff = kcalloc(mdp->num_tx_ring, sizeof(*mdp->tx_skbuff),
+ GFP_KERNEL);
+ if (!mdp->tx_skbuff)
+ goto ring_free;
+
+ /* Allocate all Rx descriptors. */
+ rx_ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
+ mdp->rx_ring = dma_alloc_coherent(&mdp->pdev->dev, rx_ringsize,
+ &mdp->rx_desc_dma, GFP_KERNEL);
+ if (!mdp->rx_ring)
+ goto ring_free;
+
+ mdp->dirty_rx = 0;
+
+ /* Allocate all Tx descriptors. */
+ tx_ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
+ mdp->tx_ring = dma_alloc_coherent(&mdp->pdev->dev, tx_ringsize,
+ &mdp->tx_desc_dma, GFP_KERNEL);
+ if (!mdp->tx_ring)
+ goto ring_free;
+ return 0;
+
+ring_free:
+ /* Free Rx and Tx skb ring buffer and DMA buffer */
+ sh_eth_ring_free(ndev);
+
+ return -ENOMEM;
+}
+
+static int sh_eth_dev_init(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ /* Soft Reset */
+ ret = mdp->cd->soft_reset(ndev);
+ if (ret)
+ return ret;
+
+ if (mdp->cd->rmiimode)
+ sh_eth_write(ndev, 0x1, RMIIMODE);
+
+ /* Descriptor format */
+ sh_eth_ring_format(ndev);
+ if (mdp->cd->rpadir)
+ sh_eth_write(ndev, NET_IP_ALIGN << 16, RPADIR);
+
+ /* all sh_eth int mask */
+ sh_eth_write(ndev, 0, EESIPR);
+
+#if defined(__LITTLE_ENDIAN)
+ if (mdp->cd->hw_swap)
+ sh_eth_write(ndev, EDMR_EL, EDMR);
+ else
+#endif
+ sh_eth_write(ndev, 0, EDMR);
+
+ /* FIFO size set */
+ sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
+ sh_eth_write(ndev, 0, TFTR);
+
+ /* Frame recv control (enable multiple-packets per rx irq) */
+ sh_eth_write(ndev, RMCR_RNC, RMCR);
+
+ sh_eth_write(ndev, mdp->cd->trscer_err_mask, TRSCER);
+
+ /* DMA transfer burst mode */
+ if (mdp->cd->nbst)
+ sh_eth_modify(ndev, EDMR, EDMR_NBST, EDMR_NBST);
+
+ /* Burst cycle count upper-limit */
+ if (mdp->cd->bculr)
+ sh_eth_write(ndev, 0x800, BCULR);
+
+ sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
+
+ if (!mdp->cd->no_trimd)
+ sh_eth_write(ndev, 0, TRIMD);
+
+ /* Recv frame limit set register */
+ sh_eth_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN,
+ RFLR);
+
+ sh_eth_modify(ndev, EESR, 0, 0);
+ mdp->irq_enabled = true;
+ sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
+
+ /* EMAC Mode: PAUSE prohibition; Duplex; RX Checksum; TX; RX */
+ sh_eth_write(ndev, ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) |
+ (ndev->features & NETIF_F_RXCSUM ? ECMR_RCSC : 0) |
+ ECMR_TE | ECMR_RE, ECMR);
+
+ if (mdp->cd->set_rate)
+ mdp->cd->set_rate(ndev);
+
+ /* E-MAC Status Register clear */
+ sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
+
+ /* E-MAC Interrupt Enable register */
+ sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
+
+ /* Set MAC address */
+ update_mac_address(ndev);
+
+ /* mask reset */
+ if (mdp->cd->apr)
+ sh_eth_write(ndev, 1, APR);
+ if (mdp->cd->mpr)
+ sh_eth_write(ndev, 1, MPR);
+ if (mdp->cd->tpauser)
+ sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
+
+ /* Setting the Rx mode will start the Rx process. */
+ sh_eth_write(ndev, EDRRR_R, EDRRR);
+
+ return ret;
+}
+
+static void sh_eth_dev_exit(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i;
+
+ /* Deactivate all TX descriptors, so DMA should stop at next
+ * packet boundary if it's currently running
+ */
+ for (i = 0; i < mdp->num_tx_ring; i++)
+ mdp->tx_ring[i].status &= ~cpu_to_le32(TD_TACT);
+
+ /* Disable TX FIFO egress to MAC */
+ sh_eth_rcv_snd_disable(ndev);
+
+ /* Stop RX DMA at next packet boundary */
+ sh_eth_write(ndev, 0, EDRRR);
+
+ /* Aside from TX DMA, we can't tell when the hardware is
+ * really stopped, so we need to reset to make sure.
+ * Before doing that, wait for long enough to *probably*
+ * finish transmitting the last packet and poll stats.
+ */
+ msleep(2); /* max frame time at 10 Mbps < 1250 us */
+ sh_eth_get_stats(ndev);
+ mdp->cd->soft_reset(ndev);
+
+ /* Set the RMII mode again if required */
+ if (mdp->cd->rmiimode)
+ sh_eth_write(ndev, 0x1, RMIIMODE);
+
+ /* Set MAC address again */
+ update_mac_address(ndev);
+}
+
+static void sh_eth_rx_csum(struct sk_buff *skb)
+{
+ u8 *hw_csum;
+
+ /* The hardware checksum is 2 bytes appended to packet data */
+ if (unlikely(skb->len < sizeof(__sum16)))
+ return;
+ hw_csum = skb_tail_pointer(skb) - sizeof(__sum16);
+ skb->csum = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ skb_trim(skb, skb->len - sizeof(__sum16));
+}
+
+/* Packet receive function */
+static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_rxdesc *rxdesc;
+
+ int entry = mdp->cur_rx % mdp->num_rx_ring;
+ int boguscnt = (mdp->dirty_rx + mdp->num_rx_ring) - mdp->cur_rx;
+ int limit;
+ struct sk_buff *skb;
+ u32 desc_status;
+ int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
+ dma_addr_t dma_addr;
+ u16 pkt_len;
+ u32 buf_len;
+
+ boguscnt = min(boguscnt, *quota);
+ limit = boguscnt;
+ rxdesc = &mdp->rx_ring[entry];
+ while (!(rxdesc->status & cpu_to_le32(RD_RACT))) {
+ /* RACT bit must be checked before all the following reads */
+ dma_rmb();
+ desc_status = le32_to_cpu(rxdesc->status);
+ pkt_len = le32_to_cpu(rxdesc->len) & RD_RFL;
+
+ if (--boguscnt < 0)
+ break;
+
+ netif_info(mdp, rx_status, ndev,
+ "rx entry %d status 0x%08x len %d\n",
+ entry, desc_status, pkt_len);
+
+ if (!(desc_status & RDFEND))
+ ndev->stats.rx_length_errors++;
+
+ /* In case of almost all GETHER/ETHERs, the Receive Frame State
+ * (RFS) bits in the Receive Descriptor 0 are from bit 9 to
+ * bit 0. However, in case of the R8A7740 and R7S72100
+ * the RFS bits are from bit 25 to bit 16. So, the
+ * driver needs right shifting by 16.
+ */
+ if (mdp->cd->csmr)
+ desc_status >>= 16;
+
+ skb = mdp->rx_skbuff[entry];
+ if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
+ RD_RFS5 | RD_RFS6 | RD_RFS10)) {
+ ndev->stats.rx_errors++;
+ if (desc_status & RD_RFS1)
+ ndev->stats.rx_crc_errors++;
+ if (desc_status & RD_RFS2)
+ ndev->stats.rx_frame_errors++;
+ if (desc_status & RD_RFS3)
+ ndev->stats.rx_length_errors++;
+ if (desc_status & RD_RFS4)
+ ndev->stats.rx_length_errors++;
+ if (desc_status & RD_RFS6)
+ ndev->stats.rx_missed_errors++;
+ if (desc_status & RD_RFS10)
+ ndev->stats.rx_over_errors++;
+ } else if (skb) {
+ dma_addr = le32_to_cpu(rxdesc->addr);
+ if (!mdp->cd->hw_swap)
+ sh_eth_soft_swap(
+ phys_to_virt(ALIGN(dma_addr, 4)),
+ pkt_len + 2);
+ mdp->rx_skbuff[entry] = NULL;
+ if (mdp->cd->rpadir)
+ skb_reserve(skb, NET_IP_ALIGN);
+ dma_unmap_single(&mdp->pdev->dev, dma_addr,
+ ALIGN(mdp->rx_buf_sz, 32),
+ DMA_FROM_DEVICE);
+ skb_put(skb, pkt_len);
+ skb->protocol = eth_type_trans(skb, ndev);
+ if (ndev->features & NETIF_F_RXCSUM)
+ sh_eth_rx_csum(skb);
+ netif_receive_skb(skb);
+ ndev->stats.rx_packets++;
+ ndev->stats.rx_bytes += pkt_len;
+ if (desc_status & RD_RFS8)
+ ndev->stats.multicast++;
+ }
+ entry = (++mdp->cur_rx) % mdp->num_rx_ring;
+ rxdesc = &mdp->rx_ring[entry];
+ }
+
+ /* Refill the Rx ring buffers. */
+ for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
+ entry = mdp->dirty_rx % mdp->num_rx_ring;
+ rxdesc = &mdp->rx_ring[entry];
+ /* The size of the buffer is 32 byte boundary. */
+ buf_len = ALIGN(mdp->rx_buf_sz, 32);
+ rxdesc->len = cpu_to_le32(buf_len << 16);
+
+ if (mdp->rx_skbuff[entry] == NULL) {
+ skb = netdev_alloc_skb(ndev, skbuff_size);
+ if (skb == NULL)
+ break; /* Better luck next round. */
+ sh_eth_set_receive_align(skb);
+ dma_addr = dma_map_single(&mdp->pdev->dev, skb->data,
+ buf_len, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
+ kfree_skb(skb);
+ break;
+ }
+ mdp->rx_skbuff[entry] = skb;
+
+ skb_checksum_none_assert(skb);
+ rxdesc->addr = cpu_to_le32(dma_addr);
+ }
+ dma_wmb(); /* RACT bit must be set after all the above writes */
+ if (entry >= mdp->num_rx_ring - 1)
+ rxdesc->status |=
+ cpu_to_le32(RD_RACT | RD_RFP | RD_RDLE);
+ else
+ rxdesc->status |= cpu_to_le32(RD_RACT | RD_RFP);
+ }
+
+ /* Restart Rx engine if stopped. */
+ /* If we don't need to check status, don't. -KDU */
+ if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) {
+ /* fix the values for the next receiving if RDE is set */
+ if (intr_status & EESR_RDE && !mdp->cd->no_xdfar) {
+ u32 count = (sh_eth_read(ndev, RDFAR) -
+ sh_eth_read(ndev, RDLAR)) >> 4;
+
+ mdp->cur_rx = count;
+ mdp->dirty_rx = count;
+ }
+ sh_eth_write(ndev, EDRRR_R, EDRRR);
+ }
+
+ *quota -= limit - boguscnt - 1;
+
+ return *quota <= 0;
+}
+
+static void sh_eth_rcv_snd_disable(struct net_device *ndev)
+{
+ /* disable tx and rx */
+ sh_eth_modify(ndev, ECMR, ECMR_RE | ECMR_TE, 0);
+}
+
+static void sh_eth_rcv_snd_enable(struct net_device *ndev)
+{
+ /* enable tx and rx */
+ sh_eth_modify(ndev, ECMR, ECMR_RE | ECMR_TE, ECMR_RE | ECMR_TE);
+}
+
+/* E-MAC interrupt handler */
+static void sh_eth_emac_interrupt(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u32 felic_stat;
+ u32 link_stat;
+
+ felic_stat = sh_eth_read(ndev, ECSR) & sh_eth_read(ndev, ECSIPR);
+ sh_eth_write(ndev, felic_stat, ECSR); /* clear int */
+ if (felic_stat & ECSR_ICD)
+ ndev->stats.tx_carrier_errors++;
+ if (felic_stat & ECSR_MPD)
+ pm_wakeup_event(&mdp->pdev->dev, 0);
+ if (felic_stat & ECSR_LCHNG) {
+ /* Link Changed */
+ if (mdp->cd->no_psr || mdp->no_ether_link)
+ return;
+ link_stat = sh_eth_read(ndev, PSR);
+ if (mdp->ether_link_active_low)
+ link_stat = ~link_stat;
+ if (!(link_stat & PSR_LMON)) {
+ sh_eth_rcv_snd_disable(ndev);
+ } else {
+ /* Link Up */
+ sh_eth_modify(ndev, EESIPR, EESIPR_ECIIP, 0);
+ /* clear int */
+ sh_eth_modify(ndev, ECSR, 0, 0);
+ sh_eth_modify(ndev, EESIPR, EESIPR_ECIIP, EESIPR_ECIIP);
+ /* enable tx and rx */
+ sh_eth_rcv_snd_enable(ndev);
+ }
+ }
+}
+
+/* error control function */
+static void sh_eth_error(struct net_device *ndev, u32 intr_status)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u32 mask;
+
+ if (intr_status & EESR_TWB) {
+ /* Unused write back interrupt */
+ if (intr_status & EESR_TABT) { /* Transmit Abort int */
+ ndev->stats.tx_aborted_errors++;
+ netif_err(mdp, tx_err, ndev, "Transmit Abort\n");
+ }
+ }
+
+ if (intr_status & EESR_RABT) {
+ /* Receive Abort int */
+ if (intr_status & EESR_RFRMER) {
+ /* Receive Frame Overflow int */
+ ndev->stats.rx_frame_errors++;
+ }
+ }
+
+ if (intr_status & EESR_TDE) {
+ /* Transmit Descriptor Empty int */
+ ndev->stats.tx_fifo_errors++;
+ netif_err(mdp, tx_err, ndev, "Transmit Descriptor Empty\n");
+ }
+
+ if (intr_status & EESR_TFE) {
+ /* FIFO under flow */
+ ndev->stats.tx_fifo_errors++;
+ netif_err(mdp, tx_err, ndev, "Transmit FIFO Under flow\n");
+ }
+
+ if (intr_status & EESR_RDE) {
+ /* Receive Descriptor Empty int */
+ ndev->stats.rx_over_errors++;
+ }
+
+ if (intr_status & EESR_RFE) {
+ /* Receive FIFO Overflow int */
+ ndev->stats.rx_fifo_errors++;
+ }
+
+ if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
+ /* Address Error */
+ ndev->stats.tx_fifo_errors++;
+ netif_err(mdp, tx_err, ndev, "Address Error\n");
+ }
+
+ mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
+ if (mdp->cd->no_ade)
+ mask &= ~EESR_ADE;
+ if (intr_status & mask) {
+ /* Tx error */
+ u32 edtrr = sh_eth_read(ndev, EDTRR);
+
+ /* dmesg */
+ netdev_err(ndev, "TX error. status=%8.8x cur_tx=%8.8x dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
+ intr_status, mdp->cur_tx, mdp->dirty_tx,
+ (u32)ndev->state, edtrr);
+ /* dirty buffer free */
+ sh_eth_tx_free(ndev, true);
+
+ /* SH7712 BUG */
+ if (edtrr ^ mdp->cd->edtrr_trns) {
+ /* tx dma start */
+ sh_eth_write(ndev, mdp->cd->edtrr_trns, EDTRR);
+ }
+ /* wakeup */
+ netif_wake_queue(ndev);
+ }
+}
+
+static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
+{
+ struct net_device *ndev = netdev;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_cpu_data *cd = mdp->cd;
+ irqreturn_t ret = IRQ_NONE;
+ u32 intr_status, intr_enable;
+
+ spin_lock(&mdp->lock);
+
+ /* Get interrupt status */
+ intr_status = sh_eth_read(ndev, EESR);
+ /* Mask it with the interrupt mask, forcing ECI interrupt to be always
+ * enabled since it's the one that comes thru regardless of the mask,
+ * and we need to fully handle it in sh_eth_emac_interrupt() in order
+ * to quench it as it doesn't get cleared by just writing 1 to the ECI
+ * bit...
+ */
+ intr_enable = sh_eth_read(ndev, EESIPR);
+ intr_status &= intr_enable | EESIPR_ECIIP;
+ if (intr_status & (EESR_RX_CHECK | cd->tx_check | EESR_ECI |
+ cd->eesr_err_check))
+ ret = IRQ_HANDLED;
+ else
+ goto out;
+
+ if (unlikely(!mdp->irq_enabled)) {
+ sh_eth_write(ndev, 0, EESIPR);
+ goto out;
+ }
+
+ if (intr_status & EESR_RX_CHECK) {
+ if (napi_schedule_prep(&mdp->napi)) {
+ /* Mask Rx interrupts */
+ sh_eth_write(ndev, intr_enable & ~EESR_RX_CHECK,
+ EESIPR);
+ __napi_schedule(&mdp->napi);
+ } else {
+ netdev_warn(ndev,
+ "ignoring interrupt, status 0x%08x, mask 0x%08x.\n",
+ intr_status, intr_enable);
+ }
+ }
+
+ /* Tx Check */
+ if (intr_status & cd->tx_check) {
+ /* Clear Tx interrupts */
+ sh_eth_write(ndev, intr_status & cd->tx_check, EESR);
+
+ sh_eth_tx_free(ndev, true);
+ netif_wake_queue(ndev);
+ }
+
+ /* E-MAC interrupt */
+ if (intr_status & EESR_ECI)
+ sh_eth_emac_interrupt(ndev);
+
+ if (intr_status & cd->eesr_err_check) {
+ /* Clear error interrupts */
+ sh_eth_write(ndev, intr_status & cd->eesr_err_check, EESR);
+
+ sh_eth_error(ndev, intr_status);
+ }
+
+out:
+ spin_unlock(&mdp->lock);
+
+ return ret;
+}
+
+static int sh_eth_poll(struct napi_struct *napi, int budget)
+{
+ struct sh_eth_private *mdp = container_of(napi, struct sh_eth_private,
+ napi);
+ struct net_device *ndev = napi->dev;
+ int quota = budget;
+ u32 intr_status;
+
+ for (;;) {
+ intr_status = sh_eth_read(ndev, EESR);
+ if (!(intr_status & EESR_RX_CHECK))
+ break;
+ /* Clear Rx interrupts */
+ sh_eth_write(ndev, intr_status & EESR_RX_CHECK, EESR);
+
+ if (sh_eth_rx(ndev, intr_status, &quota))
+ goto out;
+ }
+
+ napi_complete(napi);
+
+ /* Reenable Rx interrupts */
+ if (mdp->irq_enabled)
+ sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
+out:
+ return budget - quota;
+}
+
+/* PHY state control function */
+static void sh_eth_adjust_link(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct phy_device *phydev = ndev->phydev;
+ unsigned long flags;
+ int new_state = 0;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+
+ /* Disable TX and RX right over here, if E-MAC change is ignored */
+ if (mdp->cd->no_psr || mdp->no_ether_link)
+ sh_eth_rcv_snd_disable(ndev);
+
+ if (phydev->link) {
+ if (phydev->duplex != mdp->duplex) {
+ new_state = 1;
+ mdp->duplex = phydev->duplex;
+ if (mdp->cd->set_duplex)
+ mdp->cd->set_duplex(ndev);
+ }
+
+ if (phydev->speed != mdp->speed) {
+ new_state = 1;
+ mdp->speed = phydev->speed;
+ if (mdp->cd->set_rate)
+ mdp->cd->set_rate(ndev);
+ }
+ if (!mdp->link) {
+ sh_eth_modify(ndev, ECMR, ECMR_TXF, 0);
+ new_state = 1;
+ mdp->link = phydev->link;
+ }
+ } else if (mdp->link) {
+ new_state = 1;
+ mdp->link = 0;
+ mdp->speed = 0;
+ mdp->duplex = -1;
+ }
+
+ /* Enable TX and RX right over here, if E-MAC change is ignored */
+ if ((mdp->cd->no_psr || mdp->no_ether_link) && phydev->link)
+ sh_eth_rcv_snd_enable(ndev);
+
+ spin_unlock_irqrestore(&mdp->lock, flags);
+
+ if (new_state && netif_msg_link(mdp))
+ phy_print_status(phydev);
+}
+
+/* PHY init function */
+static int sh_eth_phy_init(struct net_device *ndev)
+{
+ struct device_node *np = ndev->dev.parent->of_node;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct phy_device *phydev;
+
+ mdp->link = 0;
+ mdp->speed = 0;
+ mdp->duplex = -1;
+
+ /* Try connect to PHY */
+ if (np) {
+ struct device_node *pn;
+
+ pn = of_parse_phandle(np, "phy-handle", 0);
+ phydev = of_phy_connect(ndev, pn,
+ sh_eth_adjust_link, 0,
+ mdp->phy_interface);
+
+ of_node_put(pn);
+ if (!phydev)
+ phydev = ERR_PTR(-ENOENT);
+ } else {
+ char phy_id[MII_BUS_ID_SIZE + 3];
+
+ snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
+ mdp->mii_bus->id, mdp->phy_id);
+
+ phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
+ mdp->phy_interface);
+ }
+
+ if (IS_ERR(phydev)) {
+ netdev_err(ndev, "failed to connect PHY\n");
+ return PTR_ERR(phydev);
+ }
+
+ /* mask with MAC supported features */
+ if (mdp->cd->register_type != SH_ETH_REG_GIGABIT)
+ phy_set_max_speed(phydev, SPEED_100);
+
+ phy_attached_info(phydev);
+
+ return 0;
+}
+
+/* PHY control start function */
+static int sh_eth_phy_start(struct net_device *ndev)
+{
+ int ret;
+
+ ret = sh_eth_phy_init(ndev);
+ if (ret)
+ return ret;
+
+ phy_start(ndev->phydev);
+
+ return 0;
+}
+
+/* If it is ever necessary to increase SH_ETH_REG_DUMP_MAX_REGS, the
+ * version must be bumped as well. Just adding registers up to that
+ * limit is fine, as long as the existing register indices don't
+ * change.
+ */
+#define SH_ETH_REG_DUMP_VERSION 1
+#define SH_ETH_REG_DUMP_MAX_REGS 256
+
+static size_t __sh_eth_get_regs(struct net_device *ndev, u32 *buf)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_cpu_data *cd = mdp->cd;
+ u32 *valid_map;
+ size_t len;
+
+ BUILD_BUG_ON(SH_ETH_MAX_REGISTER_OFFSET > SH_ETH_REG_DUMP_MAX_REGS);
+
+ /* Dump starts with a bitmap that tells ethtool which
+ * registers are defined for this chip.
+ */
+ len = DIV_ROUND_UP(SH_ETH_REG_DUMP_MAX_REGS, 32);
+ if (buf) {
+ valid_map = buf;
+ buf += len;
+ } else {
+ valid_map = NULL;
+ }
+
+ /* Add a register to the dump, if it has a defined offset.
+ * This automatically skips most undefined registers, but for
+ * some it is also necessary to check a capability flag in
+ * struct sh_eth_cpu_data.
+ */
+#define mark_reg_valid(reg) valid_map[reg / 32] |= 1U << (reg % 32)
+#define add_reg_from(reg, read_expr) do { \
+ if (mdp->reg_offset[reg] != SH_ETH_OFFSET_INVALID) { \
+ if (buf) { \
+ mark_reg_valid(reg); \
+ *buf++ = read_expr; \
+ } \
+ ++len; \
+ } \
+ } while (0)
+#define add_reg(reg) add_reg_from(reg, sh_eth_read(ndev, reg))
+#define add_tsu_reg(reg) add_reg_from(reg, sh_eth_tsu_read(mdp, reg))
+
+ add_reg(EDSR);
+ add_reg(EDMR);
+ add_reg(EDTRR);
+ add_reg(EDRRR);
+ add_reg(EESR);
+ add_reg(EESIPR);
+ add_reg(TDLAR);
+ if (!cd->no_xdfar)
+ add_reg(TDFAR);
+ add_reg(TDFXR);
+ add_reg(TDFFR);
+ add_reg(RDLAR);
+ if (!cd->no_xdfar)
+ add_reg(RDFAR);
+ add_reg(RDFXR);
+ add_reg(RDFFR);
+ add_reg(TRSCER);
+ add_reg(RMFCR);
+ add_reg(TFTR);
+ add_reg(FDR);
+ add_reg(RMCR);
+ add_reg(TFUCR);
+ add_reg(RFOCR);
+ if (cd->rmiimode)
+ add_reg(RMIIMODE);
+ add_reg(FCFTR);
+ if (cd->rpadir)
+ add_reg(RPADIR);
+ if (!cd->no_trimd)
+ add_reg(TRIMD);
+ add_reg(ECMR);
+ add_reg(ECSR);
+ add_reg(ECSIPR);
+ add_reg(PIR);
+ if (!cd->no_psr)
+ add_reg(PSR);
+ add_reg(RDMLR);
+ add_reg(RFLR);
+ add_reg(IPGR);
+ if (cd->apr)
+ add_reg(APR);
+ if (cd->mpr)
+ add_reg(MPR);
+ add_reg(RFCR);
+ add_reg(RFCF);
+ if (cd->tpauser)
+ add_reg(TPAUSER);
+ add_reg(TPAUSECR);
+ if (cd->gecmr)
+ add_reg(GECMR);
+ if (cd->bculr)
+ add_reg(BCULR);
+ add_reg(MAHR);
+ add_reg(MALR);
+ if (!cd->no_tx_cntrs) {
+ add_reg(TROCR);
+ add_reg(CDCR);
+ add_reg(LCCR);
+ add_reg(CNDCR);
+ }
+ add_reg(CEFCR);
+ add_reg(FRECR);
+ add_reg(TSFRCR);
+ add_reg(TLFRCR);
+ if (cd->cexcr) {
+ add_reg(CERCR);
+ add_reg(CEECR);
+ }
+ add_reg(MAFCR);
+ if (cd->rtrate)
+ add_reg(RTRATE);
+ if (cd->csmr)
+ add_reg(CSMR);
+ if (cd->select_mii)
+ add_reg(RMII_MII);
+ if (cd->tsu) {
+ add_tsu_reg(ARSTR);
+ add_tsu_reg(TSU_CTRST);
+ if (cd->dual_port) {
+ add_tsu_reg(TSU_FWEN0);
+ add_tsu_reg(TSU_FWEN1);
+ add_tsu_reg(TSU_FCM);
+ add_tsu_reg(TSU_BSYSL0);
+ add_tsu_reg(TSU_BSYSL1);
+ add_tsu_reg(TSU_PRISL0);
+ add_tsu_reg(TSU_PRISL1);
+ add_tsu_reg(TSU_FWSL0);
+ add_tsu_reg(TSU_FWSL1);
+ }
+ add_tsu_reg(TSU_FWSLC);
+ if (cd->dual_port) {
+ add_tsu_reg(TSU_QTAGM0);
+ add_tsu_reg(TSU_QTAGM1);
+ add_tsu_reg(TSU_FWSR);
+ add_tsu_reg(TSU_FWINMK);
+ add_tsu_reg(TSU_ADQT0);
+ add_tsu_reg(TSU_ADQT1);
+ add_tsu_reg(TSU_VTAG0);
+ add_tsu_reg(TSU_VTAG1);
+ }
+ add_tsu_reg(TSU_ADSBSY);
+ add_tsu_reg(TSU_TEN);
+ add_tsu_reg(TSU_POST1);
+ add_tsu_reg(TSU_POST2);
+ add_tsu_reg(TSU_POST3);
+ add_tsu_reg(TSU_POST4);
+ /* This is the start of a table, not just a single register. */
+ if (buf) {
+ unsigned int i;
+
+ mark_reg_valid(TSU_ADRH0);
+ for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES * 2; i++)
+ *buf++ = ioread32(mdp->tsu_addr +
+ mdp->reg_offset[TSU_ADRH0] +
+ i * 4);
+ }
+ len += SH_ETH_TSU_CAM_ENTRIES * 2;
+ }
+
+#undef mark_reg_valid
+#undef add_reg_from
+#undef add_reg
+#undef add_tsu_reg
+
+ return len * 4;
+}
+
+static int sh_eth_get_regs_len(struct net_device *ndev)
+{
+ return __sh_eth_get_regs(ndev, NULL);
+}
+
+static void sh_eth_get_regs(struct net_device *ndev, struct ethtool_regs *regs,
+ void *buf)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ regs->version = SH_ETH_REG_DUMP_VERSION;
+
+ pm_runtime_get_sync(&mdp->pdev->dev);
+ __sh_eth_get_regs(ndev, buf);
+ pm_runtime_put_sync(&mdp->pdev->dev);
+}
+
+static u32 sh_eth_get_msglevel(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ return mdp->msg_enable;
+}
+
+static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ mdp->msg_enable = value;
+}
+
+static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
+ "rx_current", "tx_current",
+ "rx_dirty", "tx_dirty",
+};
+#define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats)
+
+static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return SH_ETH_STATS_LEN;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void sh_eth_get_ethtool_stats(struct net_device *ndev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i = 0;
+
+ /* device-specific stats */
+ data[i++] = mdp->cur_rx;
+ data[i++] = mdp->cur_tx;
+ data[i++] = mdp->dirty_rx;
+ data[i++] = mdp->dirty_tx;
+}
+
+static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
+{
+ switch (stringset) {
+ case ETH_SS_STATS:
+ memcpy(data, sh_eth_gstrings_stats,
+ sizeof(sh_eth_gstrings_stats));
+ break;
+ }
+}
+
+static void sh_eth_get_ringparam(struct net_device *ndev,
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kernel_ring,
+ struct netlink_ext_ack *extack)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ ring->rx_max_pending = RX_RING_MAX;
+ ring->tx_max_pending = TX_RING_MAX;
+ ring->rx_pending = mdp->num_rx_ring;
+ ring->tx_pending = mdp->num_tx_ring;
+}
+
+static int sh_eth_set_ringparam(struct net_device *ndev,
+ struct ethtool_ringparam *ring,
+ struct kernel_ethtool_ringparam *kernel_ring,
+ struct netlink_ext_ack *extack)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ if (ring->tx_pending > TX_RING_MAX ||
+ ring->rx_pending > RX_RING_MAX ||
+ ring->tx_pending < TX_RING_MIN ||
+ ring->rx_pending < RX_RING_MIN)
+ return -EINVAL;
+ if (ring->rx_mini_pending || ring->rx_jumbo_pending)
+ return -EINVAL;
+
+ if (netif_running(ndev)) {
+ netif_device_detach(ndev);
+ netif_tx_disable(ndev);
+
+ /* Serialise with the interrupt handler and NAPI, then
+ * disable interrupts. We have to clear the
+ * irq_enabled flag first to ensure that interrupts
+ * won't be re-enabled.
+ */
+ mdp->irq_enabled = false;
+ synchronize_irq(ndev->irq);
+ napi_synchronize(&mdp->napi);
+ sh_eth_write(ndev, 0x0000, EESIPR);
+
+ sh_eth_dev_exit(ndev);
+
+ /* Free all the skbuffs in the Rx queue and the DMA buffers. */
+ sh_eth_ring_free(ndev);
+ }
+
+ /* Set new parameters */
+ mdp->num_rx_ring = ring->rx_pending;
+ mdp->num_tx_ring = ring->tx_pending;
+
+ if (netif_running(ndev)) {
+ ret = sh_eth_ring_init(ndev);
+ if (ret < 0) {
+ netdev_err(ndev, "%s: sh_eth_ring_init failed.\n",
+ __func__);
+ return ret;
+ }
+ ret = sh_eth_dev_init(ndev);
+ if (ret < 0) {
+ netdev_err(ndev, "%s: sh_eth_dev_init failed.\n",
+ __func__);
+ return ret;
+ }
+
+ netif_device_attach(ndev);
+ }
+
+ return 0;
+}
+
+static void sh_eth_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ wol->supported = 0;
+ wol->wolopts = 0;
+
+ if (mdp->cd->magic) {
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = mdp->wol_enabled ? WAKE_MAGIC : 0;
+ }
+}
+
+static int sh_eth_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (!mdp->cd->magic || wol->wolopts & ~WAKE_MAGIC)
+ return -EOPNOTSUPP;
+
+ mdp->wol_enabled = !!(wol->wolopts & WAKE_MAGIC);
+
+ device_set_wakeup_enable(&mdp->pdev->dev, mdp->wol_enabled);
+
+ return 0;
+}
+
+static const struct ethtool_ops sh_eth_ethtool_ops = {
+ .get_regs_len = sh_eth_get_regs_len,
+ .get_regs = sh_eth_get_regs,
+ .nway_reset = phy_ethtool_nway_reset,
+ .get_msglevel = sh_eth_get_msglevel,
+ .set_msglevel = sh_eth_set_msglevel,
+ .get_link = ethtool_op_get_link,
+ .get_strings = sh_eth_get_strings,
+ .get_ethtool_stats = sh_eth_get_ethtool_stats,
+ .get_sset_count = sh_eth_get_sset_count,
+ .get_ringparam = sh_eth_get_ringparam,
+ .set_ringparam = sh_eth_set_ringparam,
+ .get_link_ksettings = phy_ethtool_get_link_ksettings,
+ .set_link_ksettings = phy_ethtool_set_link_ksettings,
+ .get_wol = sh_eth_get_wol,
+ .set_wol = sh_eth_set_wol,
+};
+
+/* network device open function */
+static int sh_eth_open(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ pm_runtime_get_sync(&mdp->pdev->dev);
+
+ napi_enable(&mdp->napi);
+
+ ret = request_irq(ndev->irq, sh_eth_interrupt,
+ mdp->cd->irq_flags, ndev->name, ndev);
+ if (ret) {
+ netdev_err(ndev, "Can not assign IRQ number\n");
+ goto out_napi_off;
+ }
+
+ /* Descriptor set */
+ ret = sh_eth_ring_init(ndev);
+ if (ret)
+ goto out_free_irq;
+
+ /* device init */
+ ret = sh_eth_dev_init(ndev);
+ if (ret)
+ goto out_free_irq;
+
+ /* PHY control start*/
+ ret = sh_eth_phy_start(ndev);
+ if (ret)
+ goto out_free_irq;
+
+ netif_start_queue(ndev);
+
+ mdp->is_opened = 1;
+
+ return ret;
+
+out_free_irq:
+ free_irq(ndev->irq, ndev);
+out_napi_off:
+ napi_disable(&mdp->napi);
+ pm_runtime_put_sync(&mdp->pdev->dev);
+ return ret;
+}
+
+/* Timeout function */
+static void sh_eth_tx_timeout(struct net_device *ndev, unsigned int txqueue)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_rxdesc *rxdesc;
+ int i;
+
+ netif_stop_queue(ndev);
+
+ netif_err(mdp, timer, ndev,
+ "transmit timed out, status %8.8x, resetting...\n",
+ sh_eth_read(ndev, EESR));
+
+ /* tx_errors count up */
+ ndev->stats.tx_errors++;
+
+ /* Free all the skbuffs in the Rx queue. */
+ for (i = 0; i < mdp->num_rx_ring; i++) {
+ rxdesc = &mdp->rx_ring[i];
+ rxdesc->status = cpu_to_le32(0);
+ rxdesc->addr = cpu_to_le32(0xBADF00D0);
+ dev_kfree_skb(mdp->rx_skbuff[i]);
+ mdp->rx_skbuff[i] = NULL;
+ }
+ for (i = 0; i < mdp->num_tx_ring; i++) {
+ dev_kfree_skb(mdp->tx_skbuff[i]);
+ mdp->tx_skbuff[i] = NULL;
+ }
+
+ /* device init */
+ sh_eth_dev_init(ndev);
+
+ netif_start_queue(ndev);
+}
+
+/* Packet transmit function */
+static netdev_tx_t sh_eth_start_xmit(struct sk_buff *skb,
+ struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_txdesc *txdesc;
+ dma_addr_t dma_addr;
+ u32 entry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+ if ((mdp->cur_tx - mdp->dirty_tx) >= (mdp->num_tx_ring - 4)) {
+ if (!sh_eth_tx_free(ndev, true)) {
+ netif_warn(mdp, tx_queued, ndev, "TxFD exhausted.\n");
+ netif_stop_queue(ndev);
+ spin_unlock_irqrestore(&mdp->lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+ }
+ spin_unlock_irqrestore(&mdp->lock, flags);
+
+ if (skb_put_padto(skb, ETH_ZLEN))
+ return NETDEV_TX_OK;
+
+ entry = mdp->cur_tx % mdp->num_tx_ring;
+ mdp->tx_skbuff[entry] = skb;
+ txdesc = &mdp->tx_ring[entry];
+ /* soft swap. */
+ if (!mdp->cd->hw_swap)
+ sh_eth_soft_swap(PTR_ALIGN(skb->data, 4), skb->len + 2);
+ dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, skb->len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+ txdesc->addr = cpu_to_le32(dma_addr);
+ txdesc->len = cpu_to_le32(skb->len << 16);
+
+ dma_wmb(); /* TACT bit must be set after all the above writes */
+ if (entry >= mdp->num_tx_ring - 1)
+ txdesc->status |= cpu_to_le32(TD_TACT | TD_TDLE);
+ else
+ txdesc->status |= cpu_to_le32(TD_TACT);
+
+ wmb(); /* cur_tx must be incremented after TACT bit was set */
+ mdp->cur_tx++;
+
+ if (!(sh_eth_read(ndev, EDTRR) & mdp->cd->edtrr_trns))
+ sh_eth_write(ndev, mdp->cd->edtrr_trns, EDTRR);
+
+ return NETDEV_TX_OK;
+}
+
+/* The statistics registers have write-clear behaviour, which means we
+ * will lose any increment between the read and write. We mitigate
+ * this by only clearing when we read a non-zero value, so we will
+ * never falsely report a total of zero.
+ */
+static void
+sh_eth_update_stat(struct net_device *ndev, unsigned long *stat, int reg)
+{
+ u32 delta = sh_eth_read(ndev, reg);
+
+ if (delta) {
+ *stat += delta;
+ sh_eth_write(ndev, 0, reg);
+ }
+}
+
+static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (mdp->cd->no_tx_cntrs)
+ return &ndev->stats;
+
+ if (!mdp->is_opened)
+ return &ndev->stats;
+
+ sh_eth_update_stat(ndev, &ndev->stats.tx_dropped, TROCR);
+ sh_eth_update_stat(ndev, &ndev->stats.collisions, CDCR);
+ sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors, LCCR);
+
+ if (mdp->cd->cexcr) {
+ sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
+ CERCR);
+ sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
+ CEECR);
+ } else {
+ sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
+ CNDCR);
+ }
+
+ return &ndev->stats;
+}
+
+/* device close function */
+static int sh_eth_close(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ netif_stop_queue(ndev);
+
+ /* Serialise with the interrupt handler and NAPI, then disable
+ * interrupts. We have to clear the irq_enabled flag first to
+ * ensure that interrupts won't be re-enabled.
+ */
+ mdp->irq_enabled = false;
+ synchronize_irq(ndev->irq);
+ napi_disable(&mdp->napi);
+ sh_eth_write(ndev, 0x0000, EESIPR);
+
+ sh_eth_dev_exit(ndev);
+
+ /* PHY Disconnect */
+ if (ndev->phydev) {
+ phy_stop(ndev->phydev);
+ phy_disconnect(ndev->phydev);
+ }
+
+ free_irq(ndev->irq, ndev);
+
+ /* Free all the skbuffs in the Rx queue and the DMA buffer. */
+ sh_eth_ring_free(ndev);
+
+ mdp->is_opened = 0;
+
+ pm_runtime_put(&mdp->pdev->dev);
+
+ return 0;
+}
+
+static int sh_eth_change_mtu(struct net_device *ndev, int new_mtu)
+{
+ if (netif_running(ndev))
+ return -EBUSY;
+
+ ndev->mtu = new_mtu;
+ netdev_update_features(ndev);
+
+ return 0;
+}
+
+/* For TSU_POSTn. Please refer to the manual about this (strange) bitfields */
+static u32 sh_eth_tsu_get_post_mask(int entry)
+{
+ return 0x0f << (28 - ((entry % 8) * 4));
+}
+
+static u32 sh_eth_tsu_get_post_bit(struct sh_eth_private *mdp, int entry)
+{
+ return (0x08 >> (mdp->port << 1)) << (28 - ((entry % 8) * 4));
+}
+
+static void sh_eth_tsu_enable_cam_entry_post(struct net_device *ndev,
+ int entry)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int reg = TSU_POST1 + entry / 8;
+ u32 tmp;
+
+ tmp = sh_eth_tsu_read(mdp, reg);
+ sh_eth_tsu_write(mdp, tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg);
+}
+
+static bool sh_eth_tsu_disable_cam_entry_post(struct net_device *ndev,
+ int entry)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int reg = TSU_POST1 + entry / 8;
+ u32 post_mask, ref_mask, tmp;
+
+ post_mask = sh_eth_tsu_get_post_mask(entry);
+ ref_mask = sh_eth_tsu_get_post_bit(mdp, entry) & ~post_mask;
+
+ tmp = sh_eth_tsu_read(mdp, reg);
+ sh_eth_tsu_write(mdp, tmp & ~post_mask, reg);
+
+ /* If other port enables, the function returns "true" */
+ return tmp & ref_mask;
+}
+
+static int sh_eth_tsu_busy(struct net_device *ndev)
+{
+ int timeout = SH_ETH_TSU_TIMEOUT_MS * 100;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ while ((sh_eth_tsu_read(mdp, TSU_ADSBSY) & TSU_ADSBSY_0)) {
+ udelay(10);
+ timeout--;
+ if (timeout <= 0) {
+ netdev_err(ndev, "%s: timeout\n", __func__);
+ return -ETIMEDOUT;
+ }
+ }
+
+ return 0;
+}
+
+static int sh_eth_tsu_write_entry(struct net_device *ndev, u16 offset,
+ const u8 *addr)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u32 val;
+
+ val = addr[0] << 24 | addr[1] << 16 | addr[2] << 8 | addr[3];
+ iowrite32(val, mdp->tsu_addr + offset);
+ if (sh_eth_tsu_busy(ndev) < 0)
+ return -EBUSY;
+
+ val = addr[4] << 8 | addr[5];
+ iowrite32(val, mdp->tsu_addr + offset + 4);
+ if (sh_eth_tsu_busy(ndev) < 0)
+ return -EBUSY;
+
+ return 0;
+}
+
+static void sh_eth_tsu_read_entry(struct net_device *ndev, u16 offset, u8 *addr)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u32 val;
+
+ val = ioread32(mdp->tsu_addr + offset);
+ addr[0] = (val >> 24) & 0xff;
+ addr[1] = (val >> 16) & 0xff;
+ addr[2] = (val >> 8) & 0xff;
+ addr[3] = val & 0xff;
+ val = ioread32(mdp->tsu_addr + offset + 4);
+ addr[4] = (val >> 8) & 0xff;
+ addr[5] = val & 0xff;
+}
+
+
+static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+ int i;
+ u8 c_addr[ETH_ALEN];
+
+ for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
+ sh_eth_tsu_read_entry(ndev, reg_offset, c_addr);
+ if (ether_addr_equal(addr, c_addr))
+ return i;
+ }
+
+ return -ENOENT;
+}
+
+static int sh_eth_tsu_find_empty(struct net_device *ndev)
+{
+ u8 blank[ETH_ALEN];
+ int entry;
+
+ memset(blank, 0, sizeof(blank));
+ entry = sh_eth_tsu_find_entry(ndev, blank);
+ return (entry < 0) ? -ENOMEM : entry;
+}
+
+static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev,
+ int entry)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+ int ret;
+ u8 blank[ETH_ALEN];
+
+ sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) &
+ ~(1 << (31 - entry)), TSU_TEN);
+
+ memset(blank, 0, sizeof(blank));
+ ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+ int i, ret;
+
+ if (!mdp->cd->tsu)
+ return 0;
+
+ i = sh_eth_tsu_find_entry(ndev, addr);
+ if (i < 0) {
+ /* No entry found, create one */
+ i = sh_eth_tsu_find_empty(ndev);
+ if (i < 0)
+ return -ENOMEM;
+ ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr);
+ if (ret < 0)
+ return ret;
+
+ /* Enable the entry */
+ sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) |
+ (1 << (31 - i)), TSU_TEN);
+ }
+
+ /* Entry found or created, enable POST */
+ sh_eth_tsu_enable_cam_entry_post(ndev, i);
+
+ return 0;
+}
+
+static int sh_eth_tsu_del_entry(struct net_device *ndev, const u8 *addr)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i, ret;
+
+ if (!mdp->cd->tsu)
+ return 0;
+
+ i = sh_eth_tsu_find_entry(ndev, addr);
+ if (i) {
+ /* Entry found */
+ if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
+ goto done;
+
+ /* Disable the entry if both ports was disabled */
+ ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
+ if (ret < 0)
+ return ret;
+ }
+done:
+ return 0;
+}
+
+static int sh_eth_tsu_purge_all(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i, ret;
+
+ if (!mdp->cd->tsu)
+ return 0;
+
+ for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++) {
+ if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
+ continue;
+
+ /* Disable the entry if both ports was disabled */
+ ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static void sh_eth_tsu_purge_mcast(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
+ u8 addr[ETH_ALEN];
+ int i;
+
+ if (!mdp->cd->tsu)
+ return;
+
+ for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
+ sh_eth_tsu_read_entry(ndev, reg_offset, addr);
+ if (is_multicast_ether_addr(addr))
+ sh_eth_tsu_del_entry(ndev, addr);
+ }
+}
+
+/* Update promiscuous flag and multicast filter */
+static void sh_eth_set_rx_mode(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u32 ecmr_bits;
+ int mcast_all = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+ /* Initial condition is MCT = 1, PRM = 0.
+ * Depending on ndev->flags, set PRM or clear MCT
+ */
+ ecmr_bits = sh_eth_read(ndev, ECMR) & ~ECMR_PRM;
+ if (mdp->cd->tsu)
+ ecmr_bits |= ECMR_MCT;
+
+ if (!(ndev->flags & IFF_MULTICAST)) {
+ sh_eth_tsu_purge_mcast(ndev);
+ mcast_all = 1;
+ }
+ if (ndev->flags & IFF_ALLMULTI) {
+ sh_eth_tsu_purge_mcast(ndev);
+ ecmr_bits &= ~ECMR_MCT;
+ mcast_all = 1;
+ }
+
+ if (ndev->flags & IFF_PROMISC) {
+ sh_eth_tsu_purge_all(ndev);
+ ecmr_bits = (ecmr_bits & ~ECMR_MCT) | ECMR_PRM;
+ } else if (mdp->cd->tsu) {
+ struct netdev_hw_addr *ha;
+ netdev_for_each_mc_addr(ha, ndev) {
+ if (mcast_all && is_multicast_ether_addr(ha->addr))
+ continue;
+
+ if (sh_eth_tsu_add_entry(ndev, ha->addr) < 0) {
+ if (!mcast_all) {
+ sh_eth_tsu_purge_mcast(ndev);
+ ecmr_bits &= ~ECMR_MCT;
+ mcast_all = 1;
+ }
+ }
+ }
+ }
+
+ /* update the ethernet mode */
+ sh_eth_write(ndev, ecmr_bits, ECMR);
+
+ spin_unlock_irqrestore(&mdp->lock, flags);
+}
+
+static void sh_eth_set_rx_csum(struct net_device *ndev, bool enable)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+
+ /* Disable TX and RX */
+ sh_eth_rcv_snd_disable(ndev);
+
+ /* Modify RX Checksum setting */
+ sh_eth_modify(ndev, ECMR, ECMR_RCSC, enable ? ECMR_RCSC : 0);
+
+ /* Enable TX and RX */
+ sh_eth_rcv_snd_enable(ndev);
+
+ spin_unlock_irqrestore(&mdp->lock, flags);
+}
+
+static int sh_eth_set_features(struct net_device *ndev,
+ netdev_features_t features)
+{
+ netdev_features_t changed = ndev->features ^ features;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (changed & NETIF_F_RXCSUM && mdp->cd->rx_csum)
+ sh_eth_set_rx_csum(ndev, features & NETIF_F_RXCSUM);
+
+ ndev->features = features;
+
+ return 0;
+}
+
+static int sh_eth_get_vtag_index(struct sh_eth_private *mdp)
+{
+ if (!mdp->port)
+ return TSU_VTAG0;
+ else
+ return TSU_VTAG1;
+}
+
+static int sh_eth_vlan_rx_add_vid(struct net_device *ndev,
+ __be16 proto, u16 vid)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int vtag_reg_index = sh_eth_get_vtag_index(mdp);
+
+ if (unlikely(!mdp->cd->tsu))
+ return -EPERM;
+
+ /* No filtering if vid = 0 */
+ if (!vid)
+ return 0;
+
+ mdp->vlan_num_ids++;
+
+ /* The controller has one VLAN tag HW filter. So, if the filter is
+ * already enabled, the driver disables it and the filte
+ */
+ if (mdp->vlan_num_ids > 1) {
+ /* disable VLAN filter */
+ sh_eth_tsu_write(mdp, 0, vtag_reg_index);
+ return 0;
+ }
+
+ sh_eth_tsu_write(mdp, TSU_VTAG_ENABLE | (vid & TSU_VTAG_VID_MASK),
+ vtag_reg_index);
+
+ return 0;
+}
+
+static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev,
+ __be16 proto, u16 vid)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int vtag_reg_index = sh_eth_get_vtag_index(mdp);
+
+ if (unlikely(!mdp->cd->tsu))
+ return -EPERM;
+
+ /* No filtering if vid = 0 */
+ if (!vid)
+ return 0;
+
+ mdp->vlan_num_ids--;
+ sh_eth_tsu_write(mdp, 0, vtag_reg_index);
+
+ return 0;
+}
+
+/* SuperH's TSU register init function */
+static void sh_eth_tsu_init(struct sh_eth_private *mdp)
+{
+ if (!mdp->cd->dual_port) {
+ sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
+ sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL,
+ TSU_FWSLC); /* Enable POST registers */
+ return;
+ }
+
+ sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */
+ sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */
+ sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */
+ sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
+ sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
+ sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
+ sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
+ sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
+ sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
+ sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
+ sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */
+ sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */
+ sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */
+ sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */
+ sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
+ sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */
+ sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */
+ sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */
+ sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */
+}
+
+/* MDIO bus release function */
+static int sh_mdio_release(struct sh_eth_private *mdp)
+{
+ /* unregister mdio bus */
+ mdiobus_unregister(mdp->mii_bus);
+
+ /* free bitbang info */
+ free_mdio_bitbang(mdp->mii_bus);
+
+ return 0;
+}
+
+static int sh_mdiobb_read(struct mii_bus *bus, int phy, int reg)
+{
+ int res;
+
+ pm_runtime_get_sync(bus->parent);
+ res = mdiobb_read(bus, phy, reg);
+ pm_runtime_put(bus->parent);
+
+ return res;
+}
+
+static int sh_mdiobb_write(struct mii_bus *bus, int phy, int reg, u16 val)
+{
+ int res;
+
+ pm_runtime_get_sync(bus->parent);
+ res = mdiobb_write(bus, phy, reg, val);
+ pm_runtime_put(bus->parent);
+
+ return res;
+}
+
+/* MDIO bus init function */
+static int sh_mdio_init(struct sh_eth_private *mdp,
+ struct sh_eth_plat_data *pd)
+{
+ int ret;
+ struct bb_info *bitbang;
+ struct platform_device *pdev = mdp->pdev;
+ struct device *dev = &mdp->pdev->dev;
+ struct phy_device *phydev;
+ struct device_node *pn;
+
+ /* create bit control struct for PHY */
+ bitbang = devm_kzalloc(dev, sizeof(struct bb_info), GFP_KERNEL);
+ if (!bitbang)
+ return -ENOMEM;
+
+ /* bitbang init */
+ bitbang->addr = mdp->addr + mdp->reg_offset[PIR];
+ bitbang->set_gate = pd->set_mdio_gate;
+ bitbang->ctrl.ops = &bb_ops;
+
+ /* MII controller setting */
+ mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
+ if (!mdp->mii_bus)
+ return -ENOMEM;
+
+ /* Wrap accessors with Runtime PM-aware ops */
+ mdp->mii_bus->read = sh_mdiobb_read;
+ mdp->mii_bus->write = sh_mdiobb_write;
+
+ /* Hook up MII support for ethtool */
+ mdp->mii_bus->name = "sh_mii";
+ mdp->mii_bus->parent = dev;
+ snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+ pdev->name, pdev->id);
+
+ /* register MDIO bus */
+ if (pd->phy_irq > 0)
+ mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
+
+ ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
+ if (ret)
+ goto out_free_bus;
+
+ pn = of_parse_phandle(dev->of_node, "phy-handle", 0);
+ phydev = of_phy_find_device(pn);
+ if (phydev) {
+ phydev->mac_managed_pm = true;
+ put_device(&phydev->mdio.dev);
+ }
+ of_node_put(pn);
+
+ return 0;
+
+out_free_bus:
+ free_mdio_bitbang(mdp->mii_bus);
+ return ret;
+}
+
+static const u16 *sh_eth_get_register_offset(int register_type)
+{
+ const u16 *reg_offset = NULL;
+
+ switch (register_type) {
+ case SH_ETH_REG_GIGABIT:
+ reg_offset = sh_eth_offset_gigabit;
+ break;
+ case SH_ETH_REG_FAST_RCAR:
+ reg_offset = sh_eth_offset_fast_rcar;
+ break;
+ case SH_ETH_REG_FAST_SH4:
+ reg_offset = sh_eth_offset_fast_sh4;
+ break;
+ case SH_ETH_REG_FAST_SH3_SH2:
+ reg_offset = sh_eth_offset_fast_sh3_sh2;
+ break;
+ }
+
+ return reg_offset;
+}
+
+static const struct net_device_ops sh_eth_netdev_ops = {
+ .ndo_open = sh_eth_open,
+ .ndo_stop = sh_eth_close,
+ .ndo_start_xmit = sh_eth_start_xmit,
+ .ndo_get_stats = sh_eth_get_stats,
+ .ndo_set_rx_mode = sh_eth_set_rx_mode,
+ .ndo_tx_timeout = sh_eth_tx_timeout,
+ .ndo_eth_ioctl = phy_do_ioctl_running,
+ .ndo_change_mtu = sh_eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_set_features = sh_eth_set_features,
+};
+
+static const struct net_device_ops sh_eth_netdev_ops_tsu = {
+ .ndo_open = sh_eth_open,
+ .ndo_stop = sh_eth_close,
+ .ndo_start_xmit = sh_eth_start_xmit,
+ .ndo_get_stats = sh_eth_get_stats,
+ .ndo_set_rx_mode = sh_eth_set_rx_mode,
+ .ndo_vlan_rx_add_vid = sh_eth_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = sh_eth_vlan_rx_kill_vid,
+ .ndo_tx_timeout = sh_eth_tx_timeout,
+ .ndo_eth_ioctl = phy_do_ioctl_running,
+ .ndo_change_mtu = sh_eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_set_features = sh_eth_set_features,
+};
+
+#ifdef CONFIG_OF
+static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
+{
+ struct device_node *np = dev->of_node;
+ struct sh_eth_plat_data *pdata;
+ phy_interface_t interface;
+ int ret;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+
+ ret = of_get_phy_mode(np, &interface);
+ if (ret)
+ return NULL;
+ pdata->phy_interface = interface;
+
+ of_get_mac_address(np, pdata->mac_addr);
+
+ pdata->no_ether_link =
+ of_property_read_bool(np, "renesas,no-ether-link");
+ pdata->ether_link_active_low =
+ of_property_read_bool(np, "renesas,ether-link-active-low");
+
+ return pdata;
+}
+
+static const struct of_device_id sh_eth_match_table[] = {
+ { .compatible = "renesas,gether-r8a7740", .data = &r8a7740_data },
+ { .compatible = "renesas,ether-r8a7743", .data = &rcar_gen2_data },
+ { .compatible = "renesas,ether-r8a7745", .data = &rcar_gen2_data },
+ { .compatible = "renesas,ether-r8a7778", .data = &rcar_gen1_data },
+ { .compatible = "renesas,ether-r8a7779", .data = &rcar_gen1_data },
+ { .compatible = "renesas,ether-r8a7790", .data = &rcar_gen2_data },
+ { .compatible = "renesas,ether-r8a7791", .data = &rcar_gen2_data },
+ { .compatible = "renesas,ether-r8a7793", .data = &rcar_gen2_data },
+ { .compatible = "renesas,ether-r8a7794", .data = &rcar_gen2_data },
+ { .compatible = "renesas,gether-r8a77980", .data = &r8a77980_data },
+ { .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data },
+ { .compatible = "renesas,ether-r7s9210", .data = &r7s9210_data },
+ { .compatible = "renesas,rcar-gen1-ether", .data = &rcar_gen1_data },
+ { .compatible = "renesas,rcar-gen2-ether", .data = &rcar_gen2_data },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sh_eth_match_table);
+#else
+static inline struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
+{
+ return NULL;
+}
+#endif
+
+static int sh_eth_drv_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct sh_eth_plat_data *pd = dev_get_platdata(&pdev->dev);
+ const struct platform_device_id *id = platform_get_device_id(pdev);
+ struct sh_eth_private *mdp;
+ struct net_device *ndev;
+ int ret;
+
+ ndev = alloc_etherdev(sizeof(struct sh_eth_private));
+ if (!ndev)
+ return -ENOMEM;
+
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_get_sync(&pdev->dev);
+
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ goto out_release;
+ ndev->irq = ret;
+
+ SET_NETDEV_DEV(ndev, &pdev->dev);
+
+ mdp = netdev_priv(ndev);
+ mdp->num_tx_ring = TX_RING_SIZE;
+ mdp->num_rx_ring = RX_RING_SIZE;
+ mdp->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+ if (IS_ERR(mdp->addr)) {
+ ret = PTR_ERR(mdp->addr);
+ goto out_release;
+ }
+
+ ndev->base_addr = res->start;
+
+ spin_lock_init(&mdp->lock);
+ mdp->pdev = pdev;
+
+ if (pdev->dev.of_node)
+ pd = sh_eth_parse_dt(&pdev->dev);
+ if (!pd) {
+ dev_err(&pdev->dev, "no platform data\n");
+ ret = -EINVAL;
+ goto out_release;
+ }
+
+ /* get PHY ID */
+ mdp->phy_id = pd->phy;
+ mdp->phy_interface = pd->phy_interface;
+ mdp->no_ether_link = pd->no_ether_link;
+ mdp->ether_link_active_low = pd->ether_link_active_low;
+
+ /* set cpu data */
+ if (id)
+ mdp->cd = (struct sh_eth_cpu_data *)id->driver_data;
+ else
+ mdp->cd = (struct sh_eth_cpu_data *)of_device_get_match_data(&pdev->dev);
+
+ mdp->reg_offset = sh_eth_get_register_offset(mdp->cd->register_type);
+ if (!mdp->reg_offset) {
+ dev_err(&pdev->dev, "Unknown register type (%d)\n",
+ mdp->cd->register_type);
+ ret = -EINVAL;
+ goto out_release;
+ }
+ sh_eth_set_default_cpu_data(mdp->cd);
+
+ /* User's manual states max MTU should be 2048 but due to the
+ * alignment calculations in sh_eth_ring_init() the practical
+ * MTU is a bit less. Maybe this can be optimized some more.
+ */
+ ndev->max_mtu = 2000 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
+ ndev->min_mtu = ETH_MIN_MTU;
+
+ if (mdp->cd->rx_csum) {
+ ndev->features = NETIF_F_RXCSUM;
+ ndev->hw_features = NETIF_F_RXCSUM;
+ }
+
+ /* set function */
+ if (mdp->cd->tsu)
+ ndev->netdev_ops = &sh_eth_netdev_ops_tsu;
+ else
+ ndev->netdev_ops = &sh_eth_netdev_ops;
+ ndev->ethtool_ops = &sh_eth_ethtool_ops;
+ ndev->watchdog_timeo = TX_TIMEOUT;
+
+ /* debug message level */
+ mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
+
+ /* read and set MAC address */
+ read_mac_address(ndev, pd->mac_addr);
+ if (!is_valid_ether_addr(ndev->dev_addr)) {
+ dev_warn(&pdev->dev,
+ "no valid MAC address supplied, using a random one.\n");
+ eth_hw_addr_random(ndev);
+ }
+
+ if (mdp->cd->tsu) {
+ int port = pdev->id < 0 ? 0 : pdev->id % 2;
+ struct resource *rtsu;
+
+ rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!rtsu) {
+ dev_err(&pdev->dev, "no TSU resource\n");
+ ret = -ENODEV;
+ goto out_release;
+ }
+ /* We can only request the TSU region for the first port
+ * of the two sharing this TSU for the probe to succeed...
+ */
+ if (port == 0 &&
+ !devm_request_mem_region(&pdev->dev, rtsu->start,
+ resource_size(rtsu),
+ dev_name(&pdev->dev))) {
+ dev_err(&pdev->dev, "can't request TSU resource.\n");
+ ret = -EBUSY;
+ goto out_release;
+ }
+ /* ioremap the TSU registers */
+ mdp->tsu_addr = devm_ioremap(&pdev->dev, rtsu->start,
+ resource_size(rtsu));
+ if (!mdp->tsu_addr) {
+ dev_err(&pdev->dev, "TSU region ioremap() failed.\n");
+ ret = -ENOMEM;
+ goto out_release;
+ }
+ mdp->port = port;
+ ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+
+ /* Need to init only the first port of the two sharing a TSU */
+ if (port == 0) {
+ if (mdp->cd->chip_reset)
+ mdp->cd->chip_reset(ndev);
+
+ /* TSU init (Init only)*/
+ sh_eth_tsu_init(mdp);
+ }
+ }
+
+ if (mdp->cd->rmiimode)
+ sh_eth_write(ndev, 0x1, RMIIMODE);
+
+ /* MDIO bus init */
+ ret = sh_mdio_init(mdp, pd);
+ if (ret) {
+ dev_err_probe(&pdev->dev, ret, "MDIO init failed\n");
+ goto out_release;
+ }
+
+ netif_napi_add(ndev, &mdp->napi, sh_eth_poll);
+
+ /* network device register */
+ ret = register_netdev(ndev);
+ if (ret)
+ goto out_napi_del;
+
+ if (mdp->cd->magic)
+ device_set_wakeup_capable(&pdev->dev, 1);
+
+ /* print device information */
+ netdev_info(ndev, "Base address at 0x%x, %pM, IRQ %d.\n",
+ (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
+
+ pm_runtime_put(&pdev->dev);
+ platform_set_drvdata(pdev, ndev);
+
+ return ret;
+
+out_napi_del:
+ netif_napi_del(&mdp->napi);
+ sh_mdio_release(mdp);
+
+out_release:
+ /* net_dev free */
+ free_netdev(ndev);
+
+ pm_runtime_put(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ return ret;
+}
+
+static int sh_eth_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ unregister_netdev(ndev);
+ netif_napi_del(&mdp->napi);
+ sh_mdio_release(mdp);
+ pm_runtime_disable(&pdev->dev);
+ free_netdev(ndev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
+static int sh_eth_wol_setup(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ /* Only allow ECI interrupts */
+ synchronize_irq(ndev->irq);
+ napi_disable(&mdp->napi);
+ sh_eth_write(ndev, EESIPR_ECIIP, EESIPR);
+
+ /* Enable MagicPacket */
+ sh_eth_modify(ndev, ECMR, ECMR_MPDE, ECMR_MPDE);
+
+ return enable_irq_wake(ndev->irq);
+}
+
+static int sh_eth_wol_restore(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ napi_enable(&mdp->napi);
+
+ /* Disable MagicPacket */
+ sh_eth_modify(ndev, ECMR, ECMR_MPDE, 0);
+
+ /* The device needs to be reset to restore MagicPacket logic
+ * for next wakeup. If we close and open the device it will
+ * both be reset and all registers restored. This is what
+ * happens during suspend and resume without WoL enabled.
+ */
+ sh_eth_close(ndev);
+ ret = sh_eth_open(ndev);
+ if (ret < 0)
+ return ret;
+
+ return disable_irq_wake(ndev->irq);
+}
+
+static int sh_eth_suspend(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ if (!netif_running(ndev))
+ return 0;
+
+ netif_device_detach(ndev);
+
+ if (mdp->wol_enabled)
+ ret = sh_eth_wol_setup(ndev);
+ else
+ ret = sh_eth_close(ndev);
+
+ return ret;
+}
+
+static int sh_eth_resume(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ if (!netif_running(ndev))
+ return 0;
+
+ if (mdp->wol_enabled)
+ ret = sh_eth_wol_restore(ndev);
+ else
+ ret = sh_eth_open(ndev);
+
+ if (ret < 0)
+ return ret;
+
+ netif_device_attach(ndev);
+
+ return ret;
+}
+#endif
+
+static int sh_eth_runtime_nop(struct device *dev)
+{
+ /* Runtime PM callback shared between ->runtime_suspend()
+ * and ->runtime_resume(). Simply returns success.
+ *
+ * This driver re-initializes all registers after
+ * pm_runtime_get_sync() anyway so there is no need
+ * to save and restore registers here.
+ */
+ return 0;
+}
+
+static const struct dev_pm_ops sh_eth_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sh_eth_suspend, sh_eth_resume)
+ SET_RUNTIME_PM_OPS(sh_eth_runtime_nop, sh_eth_runtime_nop, NULL)
+};
+#define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops)
+#else
+#define SH_ETH_PM_OPS NULL
+#endif
+
+static const struct platform_device_id sh_eth_id_table[] = {
+ { "sh7619-ether", (kernel_ulong_t)&sh7619_data },
+ { "sh771x-ether", (kernel_ulong_t)&sh771x_data },
+ { "sh7724-ether", (kernel_ulong_t)&sh7724_data },
+ { "sh7734-gether", (kernel_ulong_t)&sh7734_data },
+ { "sh7757-ether", (kernel_ulong_t)&sh7757_data },
+ { "sh7757-gether", (kernel_ulong_t)&sh7757_data_giga },
+ { "sh7763-gether", (kernel_ulong_t)&sh7763_data },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, sh_eth_id_table);
+
+static struct platform_driver sh_eth_driver = {
+ .probe = sh_eth_drv_probe,
+ .remove = sh_eth_drv_remove,
+ .id_table = sh_eth_id_table,
+ .driver = {
+ .name = CARDNAME,
+ .pm = SH_ETH_PM_OPS,
+ .of_match_table = of_match_ptr(sh_eth_match_table),
+ },
+};
+
+module_platform_driver(sh_eth_driver);
+
+MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
+MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h
new file mode 100644
index 000000000..a5c07c6ff
--- /dev/null
+++ b/drivers/net/ethernet/renesas/sh_eth.h
@@ -0,0 +1,567 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* SuperH Ethernet device driver
+ *
+ * Copyright (C) 2006-2012 Nobuhiro Iwamatsu
+ * Copyright (C) 2008-2012 Renesas Solutions Corp.
+ */
+
+#ifndef __SH_ETH_H__
+#define __SH_ETH_H__
+
+#define CARDNAME "sh-eth"
+#define TX_TIMEOUT (5*HZ)
+#define TX_RING_SIZE 64 /* Tx ring size */
+#define RX_RING_SIZE 64 /* Rx ring size */
+#define TX_RING_MIN 64
+#define RX_RING_MIN 64
+#define TX_RING_MAX 1024
+#define RX_RING_MAX 1024
+#define PKT_BUF_SZ 1538
+#define SH_ETH_TSU_TIMEOUT_MS 500
+#define SH_ETH_TSU_CAM_ENTRIES 32
+
+enum {
+ /* IMPORTANT: To keep ethtool register dump working, add new
+ * register names immediately before SH_ETH_MAX_REGISTER_OFFSET.
+ */
+
+ /* E-DMAC registers */
+ EDSR = 0,
+ EDMR,
+ EDTRR,
+ EDRRR,
+ EESR,
+ EESIPR,
+ TDLAR,
+ TDFAR,
+ TDFXR,
+ TDFFR,
+ RDLAR,
+ RDFAR,
+ RDFXR,
+ RDFFR,
+ TRSCER,
+ RMFCR,
+ TFTR,
+ FDR,
+ RMCR,
+ EDOCR,
+ TFUCR,
+ RFOCR,
+ RMIIMODE,
+ FCFTR,
+ RPADIR,
+ TRIMD,
+ RBWAR,
+ TBRAR,
+
+ /* Ether registers */
+ ECMR,
+ ECSR,
+ ECSIPR,
+ PIR,
+ PSR,
+ RDMLR,
+ PIPR,
+ RFLR,
+ IPGR,
+ APR,
+ MPR,
+ PFTCR,
+ PFRCR,
+ RFCR,
+ RFCF,
+ TPAUSER,
+ TPAUSECR,
+ BCFR,
+ BCFRR,
+ GECMR,
+ BCULR,
+ MAHR,
+ MALR,
+ TROCR,
+ CDCR,
+ LCCR,
+ CNDCR,
+ CEFCR,
+ FRECR,
+ TSFRCR,
+ TLFRCR,
+ CERCR,
+ CEECR,
+ MAFCR,
+ RTRATE,
+ CSMR,
+ RMII_MII,
+
+ /* TSU Absolute address */
+ ARSTR,
+ TSU_CTRST,
+ TSU_FWEN0,
+ TSU_FWEN1,
+ TSU_FCM,
+ TSU_BSYSL0,
+ TSU_BSYSL1,
+ TSU_PRISL0,
+ TSU_PRISL1,
+ TSU_FWSL0,
+ TSU_FWSL1,
+ TSU_FWSLC,
+ TSU_QTAG0, /* Same as TSU_QTAGM0 */
+ TSU_QTAG1, /* Same as TSU_QTAGM1 */
+ TSU_QTAGM0,
+ TSU_QTAGM1,
+ TSU_FWSR,
+ TSU_FWINMK,
+ TSU_ADQT0,
+ TSU_ADQT1,
+ TSU_VTAG0,
+ TSU_VTAG1,
+ TSU_ADSBSY,
+ TSU_TEN,
+ TSU_POST1,
+ TSU_POST2,
+ TSU_POST3,
+ TSU_POST4,
+ TSU_ADRH0,
+ /* TSU_ADR{H,L}{0..31} are assumed to be contiguous */
+
+ TXNLCR0,
+ TXALCR0,
+ RXNLCR0,
+ RXALCR0,
+ FWNLCR0,
+ FWALCR0,
+ TXNLCR1,
+ TXALCR1,
+ RXNLCR1,
+ RXALCR1,
+ FWNLCR1,
+ FWALCR1,
+
+ /* This value must be written at last. */
+ SH_ETH_MAX_REGISTER_OFFSET,
+};
+
+enum {
+ SH_ETH_REG_GIGABIT,
+ SH_ETH_REG_FAST_RCAR,
+ SH_ETH_REG_FAST_SH4,
+ SH_ETH_REG_FAST_SH3_SH2
+};
+
+/* Driver's parameters */
+#if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_RENESAS)
+#define SH_ETH_RX_ALIGN 32
+#else
+#define SH_ETH_RX_ALIGN 2
+#endif
+
+/* Register's bits
+ */
+/* EDSR : sh7734, sh7757, sh7763, r8a7740, and r7s72100 only */
+enum EDSR_BIT {
+ EDSR_ENT = 0x01, EDSR_ENR = 0x02,
+};
+#define EDSR_ENALL (EDSR_ENT|EDSR_ENR)
+
+/* GECMR : sh7734, sh7763 and r8a7740 only */
+enum GECMR_BIT {
+ GECMR_10 = 0x0, GECMR_100 = 0x04, GECMR_1000 = 0x01,
+};
+
+/* EDMR */
+enum EDMR_BIT {
+ EDMR_NBST = 0x80,
+ EDMR_EL = 0x40, /* Litte endian */
+ EDMR_DL1 = 0x20, EDMR_DL0 = 0x10,
+ EDMR_SRST_GETHER = 0x03,
+ EDMR_SRST_ETHER = 0x01,
+};
+
+/* EDTRR */
+enum EDTRR_BIT {
+ EDTRR_TRNS_GETHER = 0x03,
+ EDTRR_TRNS_ETHER = 0x01,
+};
+
+/* EDRRR */
+enum EDRRR_BIT {
+ EDRRR_R = 0x01,
+};
+
+/* TPAUSER */
+enum TPAUSER_BIT {
+ TPAUSER_TPAUSE = 0x0000ffff,
+ TPAUSER_UNLIMITED = 0,
+};
+
+/* BCFR */
+enum BCFR_BIT {
+ BCFR_RPAUSE = 0x0000ffff,
+ BCFR_UNLIMITED = 0,
+};
+
+/* PIR */
+enum PIR_BIT {
+ PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
+};
+
+/* PSR */
+enum PSR_BIT { PSR_LMON = 0x01, };
+
+/* EESR */
+enum EESR_BIT {
+ EESR_TWB1 = 0x80000000,
+ EESR_TWB = 0x40000000, /* same as TWB0 */
+ EESR_TC1 = 0x20000000,
+ EESR_TUC = 0x10000000,
+ EESR_ROC = 0x08000000,
+ EESR_TABT = 0x04000000,
+ EESR_RABT = 0x02000000,
+ EESR_RFRMER = 0x01000000, /* same as RFCOF */
+ EESR_ADE = 0x00800000,
+ EESR_ECI = 0x00400000,
+ EESR_FTC = 0x00200000, /* same as TC or TC0 */
+ EESR_TDE = 0x00100000,
+ EESR_TFE = 0x00080000, /* same as TFUF */
+ EESR_FRC = 0x00040000, /* same as FR */
+ EESR_RDE = 0x00020000,
+ EESR_RFE = 0x00010000,
+ EESR_CND = 0x00000800,
+ EESR_DLC = 0x00000400,
+ EESR_CD = 0x00000200,
+ EESR_TRO = 0x00000100,
+ EESR_RMAF = 0x00000080,
+ EESR_CEEF = 0x00000040,
+ EESR_CELF = 0x00000020,
+ EESR_RRF = 0x00000010,
+ EESR_RTLF = 0x00000008,
+ EESR_RTSF = 0x00000004,
+ EESR_PRE = 0x00000002,
+ EESR_CERF = 0x00000001,
+};
+
+#define EESR_RX_CHECK (EESR_FRC | /* Frame recv */ \
+ EESR_RMAF | /* Multicast address recv */ \
+ EESR_RRF | /* Bit frame recv */ \
+ EESR_RTLF | /* Long frame recv */ \
+ EESR_RTSF | /* Short frame recv */ \
+ EESR_PRE | /* PHY-LSI recv error */ \
+ EESR_CERF) /* Recv frame CRC error */
+
+#define DEFAULT_TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | \
+ EESR_TRO)
+#define DEFAULT_EESR_ERR_CHECK (EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | \
+ EESR_RDE | EESR_RFRMER | EESR_ADE | \
+ EESR_TFE | EESR_TDE)
+
+/* EESIPR */
+enum EESIPR_BIT {
+ EESIPR_TWB1IP = 0x80000000,
+ EESIPR_TWBIP = 0x40000000, /* same as TWB0IP */
+ EESIPR_TC1IP = 0x20000000,
+ EESIPR_TUCIP = 0x10000000,
+ EESIPR_ROCIP = 0x08000000,
+ EESIPR_TABTIP = 0x04000000,
+ EESIPR_RABTIP = 0x02000000,
+ EESIPR_RFCOFIP = 0x01000000,
+ EESIPR_ADEIP = 0x00800000,
+ EESIPR_ECIIP = 0x00400000,
+ EESIPR_FTCIP = 0x00200000, /* same as TC0IP */
+ EESIPR_TDEIP = 0x00100000,
+ EESIPR_TFUFIP = 0x00080000,
+ EESIPR_FRIP = 0x00040000,
+ EESIPR_RDEIP = 0x00020000,
+ EESIPR_RFOFIP = 0x00010000,
+ EESIPR_CNDIP = 0x00000800,
+ EESIPR_DLCIP = 0x00000400,
+ EESIPR_CDIP = 0x00000200,
+ EESIPR_TROIP = 0x00000100,
+ EESIPR_RMAFIP = 0x00000080,
+ EESIPR_CEEFIP = 0x00000040,
+ EESIPR_CELFIP = 0x00000020,
+ EESIPR_RRFIP = 0x00000010,
+ EESIPR_RTLFIP = 0x00000008,
+ EESIPR_RTSFIP = 0x00000004,
+ EESIPR_PREIP = 0x00000002,
+ EESIPR_CERFIP = 0x00000001,
+};
+
+/* FCFTR */
+enum FCFTR_BIT {
+ FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
+ FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
+ FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
+};
+#define DEFAULT_FIFO_F_D_RFF (FCFTR_RFF2 | FCFTR_RFF1 | FCFTR_RFF0)
+#define DEFAULT_FIFO_F_D_RFD (FCFTR_RFD2 | FCFTR_RFD1 | FCFTR_RFD0)
+
+/* RMCR */
+enum RMCR_BIT {
+ RMCR_RNC = 0x00000001,
+};
+
+/* ECMR */
+enum ECMR_BIT {
+ ECMR_TRCCM = 0x04000000, ECMR_RCSC = 0x00800000,
+ ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000,
+ ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
+ ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
+ ECMR_MPDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
+ ECMR_RTM = 0x00000010, ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004,
+ ECMR_DM = 0x00000002, ECMR_PRM = 0x00000001,
+};
+
+/* ECSR */
+enum ECSR_BIT {
+ ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10,
+ ECSR_LCHNG = 0x04,
+ ECSR_MPD = 0x02, ECSR_ICD = 0x01,
+};
+
+#define DEFAULT_ECSR_INIT (ECSR_BRCRX | ECSR_PSRTO | ECSR_LCHNG | \
+ ECSR_ICD | ECSIPR_MPDIP)
+
+/* ECSIPR */
+enum ECSIPR_BIT {
+ ECSIPR_BRCRXIP = 0x20, ECSIPR_PSRTOIP = 0x10,
+ ECSIPR_LCHNGIP = 0x04,
+ ECSIPR_MPDIP = 0x02, ECSIPR_ICDIP = 0x01,
+};
+
+#define DEFAULT_ECSIPR_INIT (ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | \
+ ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP)
+
+/* APR */
+enum APR_BIT {
+ APR_AP = 0x0000ffff,
+};
+
+/* MPR */
+enum MPR_BIT {
+ MPR_MP = 0x0000ffff,
+};
+
+/* TRSCER */
+enum TRSCER_BIT {
+ TRSCER_CNDCE = 0x00000800,
+ TRSCER_DLCCE = 0x00000400,
+ TRSCER_CDCE = 0x00000200,
+ TRSCER_TROCE = 0x00000100,
+ TRSCER_RMAFCE = 0x00000080,
+ TRSCER_RRFCE = 0x00000010,
+ TRSCER_RTLFCE = 0x00000008,
+ TRSCER_RTSFCE = 0x00000004,
+ TRSCER_PRECE = 0x00000002,
+ TRSCER_CERFCE = 0x00000001,
+};
+
+#define DEFAULT_TRSCER_ERR_MASK (TRSCER_RMAFCE | TRSCER_RRFCE | TRSCER_CDCE)
+
+/* RPADIR */
+enum RPADIR_BIT {
+ RPADIR_PADS = 0x1f0000, RPADIR_PADR = 0xffff,
+};
+
+/* FDR */
+#define DEFAULT_FDR_INIT 0x00000707
+
+/* ARSTR */
+enum ARSTR_BIT { ARSTR_ARST = 0x00000001, };
+
+/* TSU_FWEN0 */
+enum TSU_FWEN0_BIT {
+ TSU_FWEN0_0 = 0x00000001,
+};
+
+/* TSU_ADSBSY */
+enum TSU_ADSBSY_BIT {
+ TSU_ADSBSY_0 = 0x00000001,
+};
+
+/* TSU_TEN */
+enum TSU_TEN_BIT {
+ TSU_TEN_0 = 0x80000000,
+};
+
+/* TSU_FWSL0 */
+enum TSU_FWSL0_BIT {
+ TSU_FWSL0_FW50 = 0x1000, TSU_FWSL0_FW40 = 0x0800,
+ TSU_FWSL0_FW30 = 0x0400, TSU_FWSL0_FW20 = 0x0200,
+ TSU_FWSL0_FW10 = 0x0100, TSU_FWSL0_RMSA0 = 0x0010,
+};
+
+/* TSU_FWSLC */
+enum TSU_FWSLC_BIT {
+ TSU_FWSLC_POSTENU = 0x2000, TSU_FWSLC_POSTENL = 0x1000,
+ TSU_FWSLC_CAMSEL03 = 0x0080, TSU_FWSLC_CAMSEL02 = 0x0040,
+ TSU_FWSLC_CAMSEL01 = 0x0020, TSU_FWSLC_CAMSEL00 = 0x0010,
+ TSU_FWSLC_CAMSEL13 = 0x0008, TSU_FWSLC_CAMSEL12 = 0x0004,
+ TSU_FWSLC_CAMSEL11 = 0x0002, TSU_FWSLC_CAMSEL10 = 0x0001,
+};
+
+/* TSU_VTAGn */
+#define TSU_VTAG_ENABLE 0x80000000
+#define TSU_VTAG_VID_MASK 0x00000fff
+
+/* The sh ether Tx buffer descriptors.
+ * This structure should be 20 bytes.
+ */
+struct sh_eth_txdesc {
+ u32 status; /* TD0 */
+ u32 len; /* TD1 */
+ u32 addr; /* TD2 */
+ u32 pad0; /* padding data */
+} __aligned(2) __packed;
+
+/* Transmit descriptor 0 bits */
+enum TD_STS_BIT {
+ TD_TACT = 0x80000000,
+ TD_TDLE = 0x40000000,
+ TD_TFP1 = 0x20000000,
+ TD_TFP0 = 0x10000000,
+ TD_TFE = 0x08000000,
+ TD_TWBI = 0x04000000,
+};
+#define TDF1ST TD_TFP1
+#define TDFEND TD_TFP0
+#define TD_TFP (TD_TFP1 | TD_TFP0)
+
+/* Transmit descriptor 1 bits */
+enum TD_LEN_BIT {
+ TD_TBL = 0xffff0000, /* transmit buffer length */
+};
+
+/* The sh ether Rx buffer descriptors.
+ * This structure should be 20 bytes.
+ */
+struct sh_eth_rxdesc {
+ u32 status; /* RD0 */
+ u32 len; /* RD1 */
+ u32 addr; /* RD2 */
+ u32 pad0; /* padding data */
+} __aligned(2) __packed;
+
+/* Receive descriptor 0 bits */
+enum RD_STS_BIT {
+ RD_RACT = 0x80000000,
+ RD_RDLE = 0x40000000,
+ RD_RFP1 = 0x20000000,
+ RD_RFP0 = 0x10000000,
+ RD_RFE = 0x08000000,
+ RD_RFS10 = 0x00000200,
+ RD_RFS9 = 0x00000100,
+ RD_RFS8 = 0x00000080,
+ RD_RFS7 = 0x00000040,
+ RD_RFS6 = 0x00000020,
+ RD_RFS5 = 0x00000010,
+ RD_RFS4 = 0x00000008,
+ RD_RFS3 = 0x00000004,
+ RD_RFS2 = 0x00000002,
+ RD_RFS1 = 0x00000001,
+};
+#define RDF1ST RD_RFP1
+#define RDFEND RD_RFP0
+#define RD_RFP (RD_RFP1 | RD_RFP0)
+
+/* Receive descriptor 1 bits */
+enum RD_LEN_BIT {
+ RD_RFL = 0x0000ffff, /* receive frame length */
+ RD_RBL = 0xffff0000, /* receive buffer length */
+};
+
+/* This structure is used by each CPU dependency handling. */
+struct sh_eth_cpu_data {
+ /* mandatory functions */
+ int (*soft_reset)(struct net_device *ndev);
+
+ /* optional functions */
+ void (*chip_reset)(struct net_device *ndev);
+ void (*set_duplex)(struct net_device *ndev);
+ void (*set_rate)(struct net_device *ndev);
+
+ /* mandatory initialize value */
+ int register_type;
+ u32 edtrr_trns;
+ u32 eesipr_value;
+
+ /* optional initialize value */
+ u32 ecsr_value;
+ u32 ecsipr_value;
+ u32 fdr_value;
+ u32 fcftr_value;
+
+ /* interrupt checking mask */
+ u32 tx_check;
+ u32 eesr_err_check;
+
+ /* Error mask */
+ u32 trscer_err_mask;
+
+ /* hardware features */
+ unsigned long irq_flags; /* IRQ configuration flags */
+ unsigned no_psr:1; /* EtherC DOES NOT have PSR */
+ unsigned apr:1; /* EtherC has APR */
+ unsigned mpr:1; /* EtherC has MPR */
+ unsigned tpauser:1; /* EtherC has TPAUSER */
+ unsigned gecmr:1; /* EtherC has GECMR */
+ unsigned bculr:1; /* EtherC has BCULR */
+ unsigned tsu:1; /* EtherC has TSU */
+ unsigned hw_swap:1; /* E-DMAC has DE bit in EDMR */
+ unsigned nbst:1; /* E-DMAC has NBST bit in EDMR */
+ unsigned rpadir:1; /* E-DMAC has RPADIR */
+ unsigned no_trimd:1; /* E-DMAC DOES NOT have TRIMD */
+ unsigned no_ade:1; /* E-DMAC DOES NOT have ADE bit in EESR */
+ unsigned no_xdfar:1; /* E-DMAC DOES NOT have RDFAR/TDFAR */
+ unsigned xdfar_rw:1; /* E-DMAC has writeable RDFAR/TDFAR */
+ unsigned csmr:1; /* E-DMAC has CSMR */
+ unsigned rx_csum:1; /* EtherC has ECMR.RCSC */
+ unsigned select_mii:1; /* EtherC has RMII_MII (MII select register) */
+ unsigned rmiimode:1; /* EtherC has RMIIMODE register */
+ unsigned rtrate:1; /* EtherC has RTRATE register */
+ unsigned magic:1; /* EtherC has ECMR.MPDE and ECSR.MPD */
+ unsigned no_tx_cntrs:1; /* EtherC DOES NOT have TX error counters */
+ unsigned cexcr:1; /* EtherC has CERCR/CEECR */
+ unsigned dual_port:1; /* Dual EtherC/E-DMAC */
+};
+
+struct sh_eth_private {
+ struct platform_device *pdev;
+ struct sh_eth_cpu_data *cd;
+ const u16 *reg_offset;
+ void __iomem *addr;
+ void __iomem *tsu_addr;
+ struct clk *clk;
+ u32 num_rx_ring;
+ u32 num_tx_ring;
+ dma_addr_t rx_desc_dma;
+ dma_addr_t tx_desc_dma;
+ struct sh_eth_rxdesc *rx_ring;
+ struct sh_eth_txdesc *tx_ring;
+ struct sk_buff **rx_skbuff;
+ struct sk_buff **tx_skbuff;
+ spinlock_t lock; /* Register access lock */
+ u32 cur_rx, dirty_rx; /* Producer/consumer ring indices */
+ u32 cur_tx, dirty_tx;
+ u32 rx_buf_sz; /* Based on MTU+slack. */
+ struct napi_struct napi;
+ bool irq_enabled;
+ /* MII transceiver section. */
+ u32 phy_id; /* PHY ID */
+ struct mii_bus *mii_bus; /* MDIO bus control */
+ int link;
+ phy_interface_t phy_interface;
+ int msg_enable;
+ int speed;
+ int duplex;
+ int port; /* for TSU */
+ int vlan_num_ids; /* for VLAN tag filter */
+
+ unsigned no_ether_link:1;
+ unsigned ether_link_active_low:1;
+ unsigned is_opened:1;
+ unsigned wol_enabled:1;
+};
+
+#endif /* #ifndef __SH_ETH_H__ */
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