[PATCH] net/ethernet/realtek: Add Realtek automotive PCIe driver

From: justinlai0215
Date: Thu Aug 03 2023 - 04:29:18 EST

This patch is to add the ethernet device driver for the PCIe interface of Realtek Automotive Ethernet Switch,
applicable to RTL9054, RTL9068, RTL9072, RTL9075, RTL9068, RTL9071.

Signed-off-by: justinlai0215 <justinlai0215@xxxxxxxxxxx>
---
drivers/net/ethernet/realtek/Kconfig | 17 +
drivers/net/ethernet/realtek/Makefile | 1 +
drivers/net/ethernet/realtek/rtase/Makefile | 10 +
drivers/net/ethernet/realtek/rtase/rtase.h | 654 +++
.../net/ethernet/realtek/rtase/rtase_main.c | 4797 +++++++++++++++++
.../net/ethernet/realtek/rtase/rtase_sriov.c | 328 ++
.../net/ethernet/realtek/rtase/rtase_sriov.h | 30 +
7 files changed, 5837 insertions(+)
create mode 100644 drivers/net/ethernet/realtek/rtase/Makefile
create mode 100644 drivers/net/ethernet/realtek/rtase/rtase.h
create mode 100644 drivers/net/ethernet/realtek/rtase/rtase_main.c
create mode 100644 drivers/net/ethernet/realtek/rtase/rtase_sriov.c
create mode 100644 drivers/net/ethernet/realtek/rtase/rtase_sriov.h

diff --git a/drivers/net/ethernet/realtek/Kconfig b/drivers/net/ethernet/realtek/Kconfig
index 93d9df55b361..0250d1c3874b 100644
--- a/drivers/net/ethernet/realtek/Kconfig
+++ b/drivers/net/ethernet/realtek/Kconfig
@@ -113,4 +113,21 @@ config R8169
To compile this driver as a module, choose M here: the module
will be called r8169. This is recommended.

+config RTASE
+ tristate "Realtek Automotive Switch 9054/9068/9072/9075/9068/9071 PCIe Interface support"
+ depends on PCI
+ select CRC32
+ help
+ Say Y here if you have a Realtek Ethernet adapter belonging to
+ the following families:
+ RTL9054 5GBit Ethernet
+ RTL9068 5GBit Ethernet
+ RTL9072 5GBit Ethernet
+ RTL9075 5GBit Ethernet
+ RTL9068 5GBit Ethernet
+ RTL9071 5GBit Ethernet
+
+ To compile this driver as a module, choose M here: the module
+ will be called rtase. This is recommended.
+
endif # NET_VENDOR_REALTEK
diff --git a/drivers/net/ethernet/realtek/Makefile b/drivers/net/ethernet/realtek/Makefile
index 2e1d78b106b0..0c1c16f63e9a 100644
--- a/drivers/net/ethernet/realtek/Makefile
+++ b/drivers/net/ethernet/realtek/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_8139TOO) += 8139too.o
obj-$(CONFIG_ATP) += atp.o
r8169-objs += r8169_main.o r8169_firmware.o r8169_phy_config.o
obj-$(CONFIG_R8169) += r8169.o
+obj-$(CONFIG_RTASE) += rtase/
diff --git a/drivers/net/ethernet/realtek/rtase/Makefile b/drivers/net/ethernet/realtek/rtase/Makefile
new file mode 100644
index 000000000000..61fe2f9e0344
--- /dev/null
+++ b/drivers/net/ethernet/realtek/rtase/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright(c) 2023 Realtek Semiconductor Corp. All rights reserved.
+
+#
+# Makefile for the Realtek PCIe driver
+#
+
+obj-$(CONFIG_RTASE) += rtase.o
+
+rtase-objs := rtase_main.o rtase_sriov.o
diff --git a/drivers/net/ethernet/realtek/rtase/rtase.h b/drivers/net/ethernet/realtek/rtase/rtase.h
new file mode 100644
index 000000000000..766193914373
--- /dev/null
+++ b/drivers/net/ethernet/realtek/rtase/rtase.h
@@ -0,0 +1,654 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * rtase is the Linux device driver released for Realtek Automotive Switch
+ * controllers with PCI-Express interface.
+ *
+ * Copyright(c) 2023 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * Author:
+ * Realtek ARD software team
+ * No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
+ *
+ */
+
+/******************************************************************************
+ * This product is covered by one or more of the following patents:
+ * US6,570,884, US6,115,776, and US6,327,625.
+ ******************************************************************************/
+
+#ifndef RTASE_H_
+#define RTASE_H_
+
+#include <linux/version.h>
+#include <linux/ethtool.h>
+
+#define RTL_ALLOC_SKB_INTR(napi, length) napi_alloc_skb(&(napi), length)
+
+#define NETIF_F_ALL_CSUM NETIF_F_CSUM_MASK
+
+#define ENABLE_RTASE_PROCFS
+
+#define NETIF_F_HW_VLAN_RX NETIF_F_HW_VLAN_CTAG_RX
+#define NETIF_F_HW_VLAN_TX NETIF_F_HW_VLAN_CTAG_TX
+
+#define CONFIG_SRIOV 1
+
+#ifndef NETIF_F_RXALL
+#define NETIF_F_RXALL 0u
+#endif
+
+#ifndef NETIF_F_RXFCS
+#define NETIF_F_RXFCS 0u
+#endif
+
+#ifndef SET_NETDEV_DEV
+#define SET_NETDEV_DEV(net, pdev)
+#endif
+
+#ifndef SET_MODULE_OWNER
+#define SET_MODULE_OWNER(dev)
+#endif
+
+#ifndef SA_SHIRQ
+#define SA_SHIRQ IRQF_SHARED
+#endif
+
+#ifndef NETIF_F_GSO
+#define gso_size tso_size
+#define gso_segs tso_segs
+#endif
+
+#ifndef dma_mapping_error
+#define dma_mapping_error(a, b) 0
+#endif
+
+#ifndef netif_err
+#define netif_err(a, b, c, d)
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef false
+#define false 0
+#endif
+
+#ifndef true
+#define true 1
+#endif
+
+/* the low 32 bit address of receive buffer must be 8-byte alignment. */
+#define RTK_RX_ALIGN (8u)
+
+#define NAPI_SUFFIX "-NAPI"
+#define RTASE_VERSION "1.002.06" NAPI_SUFFIX
+#define MODULENAME "rtase"
+#define PFX MODULENAME ": "
+
+#define GPL_CLAIM \
+ "rtase Copyright (C) 2021 Realtek ARD software team\n\
+ This program comes with ABSOLUTELY NO WARRANTY;\n\
+ for details, please see <http://www.gnu.org/licenses/>.\n\
+ This is free software, and you are welcome to redistribute it under certain conditions; \n \
+ see <http://www.gnu.org/licenses/>.\n"
+
+#ifdef RTASE_DEBUG
+#define assert(expr) \
+ do { \
+ if (!(expr)) { \
+ pr_info("Assertion failed! %s,%s,%s,line=%d\n", #expr, __FILE__, __func__, \
+ __LINE__); \
+ } \
+ } while (0)
+#define dprintk(fmt, args...) pr_info(PFX fmt, ##args)
+#else
+#define assert(expr)
+#define dprintk(fmt, args...)
+#endif /* RTASE_DEBUG */
+
+#define RTASE_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
+
+#define TX_BUFFS_AVAIL(ring) ((ring)->dirty_idx + NUM_DESC - (ring)->cur_idx - 1)
+
+/* MAC address length */
+#ifndef MAC_ADDR_LEN
+#define MAC_ADDR_LEN 6u
+#endif
+
+#ifndef NETIF_F_TSO6
+#define NETIF_F_TSO6 0u
+#endif
+
+#define RX_DMA_BURST_256 4u
+#define TX_DMA_BURST_UNLIMITED 7u
+#define JUMBO_FRAME_1K (ETH_DATA_LEN)
+#define JUMBO_FRAME_9K ((9 * 1024) - ETH_HLEN - VLAN_HLEN - ETH_FCS_LEN)
+
+/* 3 means InterFrameGap = the shortest one */
+#define INTERFRAMEGAP 0x03u
+
+#define RTASE_REGS_SIZE (256u)
+#define RTASE_PCI_REGS_SIZE (0x100)
+#define RTASE_NAPI_WEIGHT (64)
+
+#define RTASE_TX_TIMEOUT (6 * HZ)
+
+#define TX_DUPLICATE_DIRTYIDX_COUNT 3u
+/* Set timeout to 1s (0x7735940 = 1s / 8ns) */
+#define TIMEOUT_SET_TIME 0x7735940u
+
+#define VLAN_FILTER_ENTRY_NUM 32u
+/* Number of Tx queues */
+#define NUM_TX_QUEUE 8u
+/* Number of Rx queues */
+#define NUM_RX_QUEUE 4u
+/* Number of Tx descriptor registers */
+#define NUM_TX_DESC 1024u
+
+/* default tx interrupt mitigation, num = 64, time = 131.072us */
+#define TX_INT_MITIGATION 0x3448u
+/* default rx interrupt mitigation, num = 64, time = 131.072us */
+#define RX_INT_MITIGATION 0x3448u
+
+#define NUM_MSIX 4u
+
+/* 0x05F3 = 1522bye + 1 */
+#define RX_BUF_SIZE 0x05F3u
+
+/* write/read MMIO register */
+#define RTL_W8(reg, val8) writeb((val8), ioaddr + (reg))
+#define RTL_W16(reg, val16) writew((val16), ioaddr + (reg))
+#define RTL_W32(reg, val32) writel((val32), ioaddr + (reg))
+#define RTL_R8(reg) readb(ioaddr + (reg))
+#define RTL_R16(reg) readw(ioaddr + (reg))
+#define RTL_R32(reg) readl(ioaddr + (reg))
+
+#ifndef DMA_64BIT_MASK
+#define DMA_64BIT_MASK 0xFFFFFFFFFFFFFFFFuLL
+#endif
+
+#ifndef DMA_32BIT_MASK
+#define DMA_32BIT_MASK 0x00000000FFFFFFFFuLL
+#endif
+
+/*****************************************************************************/
+#define RTL_NETIF_RX_SCHEDULE_PREP(dev, napi) napi_schedule_prep(napi)
+#define __RTL_NETIF_RX_SCHEDULE(dev, napi) __napi_schedule(napi)
+
+/*****************************************************************************/
+#ifndef module_param
+#define module_param(v, t, p) MODULE_PARM(v, "i")
+#endif
+
+#ifndef PCI_DEVICE
+#define PCI_DEVICE(vend, dev) \
+ .vendor = (vend), .device = (dev), .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
+#endif
+
+/*****************************************************************************/
+/* RTASE_registers */
+#define MAC0 0x0000u
+#define MAC4 0x0004u
+#define MAR0 0x0008u
+#define MAR1 0x000Cu
+#define DTCCR0 0x0010u
+#define DTCCR4 0x0014u
+#define FCR 0x0018u
+#define LBK_CTRL 0x001Au
+#define TX_DESC_START_ADDR0 0x0020u
+#define TX_DESC_START_ADDR4 0x0024u
+#define TX_DESC_COMMAND 0x0028u
+#define CHIP_CMD 0x0037u
+#define IMR0 0x0038u
+#define ISR0 0x003Cu
+#define IMR1 0x0800u
+#define ISR1 0x0802u
+#define TX_CONFIG_0 0x0040u
+#define RX_CONFIG_0 0x0044u
+#define RX_CONFIG_1 0x0046u
+#define EEM 0x0050u
+#define TDFNR 0x0057u
+#define TPPOLL 0x0090u
+#define PDR 0x00B0u
+#define FIFOR 0x00D3u
+#define PCPR 0x00D8u
+#define RMS 0x00DAu
+#define CPLUS_CMD 0x00DAu
+#define Q0_RX_DESC_ADDR0 0x00E4u
+#define Q0_RX_DESC_ADDR4 0x00E8u
+#define Q1_RX_DESC_ADDR0 0x4000u
+#define Q1_RX_DESC_ADDR4 0x4004u
+#define MTPS 0x00ECu
+#define MISC 0x00F2u
+#define TCTR0 0x0048u
+#define TIMEOUT0_ADDR 0x0058u
+
+#define TFUN_CTRL 0x0400u
+#define TX_CONFIG_1 0x203Eu
+#define TOKSEL 0x2046u
+#define TXQCRDT_0 0x2500u
+#define RFIFONFULL 0x4406u
+#define VQCTRL 0x4800u
+#define INT_MITI_TX 0x0A00u
+#define INT_MITI_RX 0x0A80u
+
+#define VFMSGDATA_0 0x7100u
+#define VFMSGDATA_2 0x7104u
+#define PFMSGICRREQ 0x7140u
+#define PFMSGIMR 0x7148u
+#define PFMSGVF1 0x7200u
+
+#define VF_MAC_0 0x7294u
+#define VF_MAC_2 0x7296u
+#define VF_MAC_4 0x7298u
+
+#define RX_PCP_TABLE 0x72D4u
+#define VLAN_ENTRY_MEM_0 0x7234u
+#define VLAN_ENTRY_0 0xAC80u
+
+/* RTASE_register_content */
+/* InterruptStatusBits 0 */
+#define TOK7 BIT(30)
+#define TOK6 BIT(28)
+#define TOK5 BIT(26)
+#define TOK4 BIT(24)
+#define MBX BIT(16)
+#define TIMEOUT0 BIT(14)
+#define FOVW BIT(6)
+#define RDU BIT(4)
+#define TOK BIT(2)
+#define ROK BIT(0)
+
+/* InterruptStatusBits 1~3 */
+#define Q_TOK BIT(4)
+#define Q_RDU BIT(1)
+#define Q_ROK BIT(0)
+
+/* ChipCmdRegBits */
+#define STOP_REQ BIT(7)
+#define STOP_REQ_DONE BIT(6)
+#define RE BIT(3)
+#define TE BIT(2)
+
+/* Cfg9346Bits */
+#define EEM_Unlock 0xC0u
+
+/* Receive Configuration 0 */
+#define RX_SINGLE_FETCH BIT(14)
+#define RX_SINGLE_TAG BIT(13)
+#define RX_MX_DMA_MASK 0x7
+#define RX_MX_DMA_SHIFT 8u
+#define ACPT_FLOW BIT(7)
+#define ACCEPT_ERR BIT(5)
+#define ACCEPT_RUNT BIT(4)
+#define ACCEPT_BROADCAST BIT(3)
+#define ACCEPT_MULTICAST BIT(2)
+#define ACCEPT_MYPHYS BIT(1)
+#define ACCEPT_ALLPHYS BIT(0)
+#define ACCEPT_MASK \
+ (ACPT_FLOW | ACCEPT_ERR | ACCEPT_RUNT | ACCEPT_BROADCAST | ACCEPT_MULTICAST \
+ | ACCEPT_MYPHYS | ACCEPT_ALLPHYS)
+
+/* Receive Configuration 1 */
+#define RX_MAX_FETCH_DESC_MASK 0x1F
+#define RX_MAX_FETCH_DESC_SHIFT 11u
+#define RX_NEW_DESC_FORMAT_EN BIT(8)
+#define OUTER_VLAN_DETAG_EN BIT(7)
+#define INNER_VLAN_DETAG_EN BIT(6)
+#define PCIE_NEW_FLOW BIT(2)
+#define PCIE_RELOAD_En BIT(0)
+
+/* TxConfigBits */
+#define TX_INTER_FRAME_GAP_MASK 0x3u
+#define TX_INTER_FRAME_GAP_SHIFT 24u
+#define TX_DMA_MASK 0x7u
+/* DMA burst value (0-7) is shift this many bits */
+#define TX_DMA_SHIFT 8u
+
+/* TFunCtrl */
+#define TX_NEW_DESC_FORMAT_EN BIT(0)
+
+/* TxDescCommand */
+#define TX_DESC_CMD_CS BIT(15)
+#define TX_DESC_CMD_WE BIT(14)
+
+/* CPlusCmd */
+#define FORCE_RXFLOW_EN BIT(11)
+#define FORCE_TXFLOW_EN BIT(10)
+#define RX_CHKSUM BIT(5)
+
+/* MISC */
+#define RX_DV_GATE_EN BIT(3)
+
+/* ResetCounterCommand */
+#define COUNTER_RESET BIT(0)
+/* DumpCounterCommand */
+#define COUNTER_DUMP BIT(3)
+
+/* OCP access */
+#define OCPR_WRITE 0x80000000u
+#define OCPR_ADDR_REG_SHIFT 16u
+
+/* MCU Command */
+#define TX_FIFO_EMPTY BIT(5)
+#define RX_FIFO_EMPTY BIT(4)
+
+/* Function Control Register */
+#define FCR_TX_LOOPBACK_EN BIT(9)
+#define FCR_TE BIT(8)
+#define FCR_RXQ_MASK 0x3u
+#define FCR_RXQ_SHIFT 4u
+#define FCR_MAR_EN BIT(3)
+#define FCR_BAR_EN BIT(2)
+#define FCR_VLAN_FTR_EN BIT(1)
+#define FCR_RE BIT(0)
+
+/* Loopback Control */
+#define LBK_ATLD BIT(1)
+#define LBK_CLR BIT(0)
+
+/* PCP Register */
+#define PCPR_VLAN_FTR_EN BIT(6)
+
+/*RTASE_register_content END */
+
+/* _DescStatusBit */
+#define DESC_OWN BIT(31) /* Descriptor is owned by NIC */
+#define RING_END BIT(30) /* End of descriptor ring */
+
+/* Tx private */
+/*------ offset 0 of tx descriptor ------*/
+#define TX_FIRST_FRAG BIT(29) /* Tx First segment of a packet */
+#define TX_LAST_FRAG BIT(28) /* Tx Final segment of a packet */
+#define GIANT_SEND_V4 BIT(26) /* TCP Giant Send Offload V4 (GSOv4) */
+#define GIANT_SEND_V6 BIT(25) /* TCP Giant Send Offload V6 (GSOv6) */
+#define TX_VLAN_TAG BIT(17) /* Add VLAN tag */
+
+/*------ offset 4 of tx descriptor ------*/
+#define TX_UDPCS_C BIT(31) /* Calculate UDP/IP checksum */
+#define TX_TCPCS_C BIT(30) /* Calculate TCP/IP checksum */
+#define TX_IPCS_C BIT(29) /* Calculate IP checksum */
+#define TX_IPV6F_C BIT(28) /* Indicate it is an IPv6 packet */
+
+/* Rx private */
+/*------ offset 28 of rx descriptor ------*/
+#define RX_FIRST_FRAG BIT(25) /* Rx First segment of a packet */
+#define RX_LAST_FRAG BIT(24) /* Rx Final segment of a packet */
+#define RX_RES BIT(20)
+#define RX_RUNT BIT(19)
+#define RX_RWT BIT(18)
+#define RX_CRC BIT(16)
+
+#define RX_V6F BIT(31)
+#define RX_V4F BIT(30)
+#define RX_UDPT BIT(29)
+#define RX_TCPT BIT(28)
+#define RX_IPF BIT(26) /* IP checksum failed */
+#define RX_UDPF BIT(25) /* UDP/IP checksum failed */
+#define RX_TCPF BIT(24) /* TCP/IP checksum failed */
+#define RX_LBK_FIFO_FULL BIT(17) /* Loopback FIFO Full */
+#define RX_VLAN_TAG BIT(16) /* VLAN tag available */
+/* _DescStatusBit END */
+
+/* sw_flag_content */
+#define SWF_SRIOV_ENABLED BIT(0)
+#define SWF_MSI_ENABLED BIT(1)
+#define SWF_MSIX_ENABLED BIT(2)
+
+#define RSVD_MASK 0x3FFFC000u
+
+typedef struct {
+ u32 opts1;
+ u32 opts2;
+ u64 addr;
+ u32 opts3;
+ u32 reserved1;
+ u32 reserved2;
+ u32 reserved3;
+} tx_desc;
+
+typedef union {
+ struct {
+ u64 header_buf_addr;
+ u32 reserved1;
+ u32 opts_header_len;
+ u64 addr;
+ u32 reserved2;
+ u32 opts1;
+ } desc_cmd;
+
+ struct {
+ u32 reserved1;
+ u32 reserved2;
+ u32 rss;
+ u32 opts4;
+ u32 reserved3;
+ u32 opts3;
+ u32 opts2;
+ u32 opts1;
+ } desc_status;
+
+ struct {
+ u32 reserved1;
+ u32 reserved2;
+ u32 reserved3;
+ u32 reserved4;
+ u32 time_stamp_0_31;
+ u32 time_stamp_32_63;
+ u32 time_stamp_64_79;
+ u32 opts1;
+ } desc_ptp;
+
+ struct {
+ u32 rsvd1;
+ u32 rsvd2;
+ u32 rsvd3;
+ u32 rsvd4;
+ u32 rsvd5;
+ u32 rsvd6;
+ u32 opts2;
+ u32 opts1;
+ } desc_rsc;
+} rx_desc;
+
+#define CMD_DBG_READ 1u
+#define CMD_DBG_WRITE 2u
+#define CMD_REG_READ16 3u
+#define CMD_REG_WRITE16 4u
+#define CMD_REG_READ32 5u
+#define CMD_REG_WRITE32 6u
+#define CMD_GET_RXQOS 7u
+#define CMD_SET_RXQOS 8u
+#define CMD_GET_TIMSIG 9u
+#define CMD_SET_TIMSIG 10u
+#define SIO_PRIV_RTK_REG (SIOCDEVPRIVATE + 6)
+#define SIO_PRIV_RTK_RXQOS (SIOCDEVPRIVATE + 7)
+#define SIO_TIMEOUT_SIG_SET (SIOCDEVPRIVATE + 8)
+#define SIO_PRIV_RTK_PTM (SIOCDEVPRIVATE + 9)
+#define SIO_PRIV_RTK_INFO (SIOCDEVPRIVATE + 10)
+#define TIMEOUT_INIT 0
+#define TIMEOUT_ERROR 99
+#define DWORD_MOD 16
+
+struct rtase_ptm_cmd_t {
+ /* disable:0, enable:1 */
+ u8 enable;
+ u8 type;
+ u8 bits;
+ u32 reg_addr;
+ u32 ptm_addr;
+ u32 reg_value;
+ u64 ptp_second;
+ u32 ptp_nano_second;
+ u64 ptm_time;
+};
+
+struct reg_rw {
+ u16 cmd;
+ u16 addr;
+ u32 val;
+};
+
+struct rtk_qos {
+ u16 cmd;
+ u8 pcp;
+ u8 tc;
+};
+
+struct rtk_timeout_sig {
+ u16 cmd;
+ u16 state;
+};
+
+#ifdef CONFIG_SRIOV
+struct vf_info {
+ struct pci_dev *vf_pci_dev;
+ u8 status;
+ u8 vf_mac[ETH_ALEN];
+ u32 mc_filter[2];
+};
+#endif
+
+#define NUM_DESC 1024u
+#define RTASE_TX_RING_DESC_SIZE (NUM_DESC * sizeof(tx_desc))
+#define RTASE_RX_RING_DESC_SIZE (NUM_DESC * sizeof(rx_desc))
+#define VLAN_ENTRY_CAREBIT 0xF0000000u
+
+/* txqos hardware definitions */
+#define RTASE_1T_CLOCK 64u
+#define RTASE_1T_POWER 10000000u
+#define RTASE_IDLESLOPE_INT_SHIFT 25u
+
+struct rtase_int_vector {
+ struct rtase_private *tp;
+ unsigned int irq;
+ u8 status;
+ u8 name[20];
+ u16 index;
+ u16 imr_addr;
+ u16 isr_addr;
+ u32 imr;
+ struct list_head ring_list;
+ struct napi_struct napi;
+ int weight;
+ int (*poll)(struct napi_struct *napi, int budget);
+};
+
+struct rtase_ring {
+ struct rtase_int_vector *ivec;
+ void *desc;
+ dma_addr_t phy_addr;
+ u32 cur_idx;
+ u32 dirty_idx;
+ u32 priv_dirty_idx;
+ u8 duplicate_dirty_count;
+ u16 index;
+
+ struct sk_buff *skbuff[NUM_DESC];
+ union {
+ u32 len[NUM_DESC];
+ dma_addr_t data_phy_addr[NUM_DESC];
+ } mis;
+
+ struct list_head ring_entry;
+ s32 (*ring_handler)(struct rtase_ring *ring, s32 budget);
+};
+
+struct rtase_txqos {
+ s32 hicredit;
+ s32 locredit;
+ s32 idleslope;
+ s32 sendslope;
+};
+
+struct rtase_private {
+ void __iomem *mmio_addr; /* memory map physical address */
+
+#ifdef RDBG_MSIX
+ u8 __iomem *msix_addr;
+#endif
+
+ u32 sw_flag;
+ struct work_struct msg_work;
+ struct work_struct watchdog_work;
+ u32 mc_filter[2];
+
+ struct pci_dev *pdev; /* Index of PCI device */
+ struct net_device *dev;
+ spinlock_t lock; /* spin lock flag */
+ u32 msg_enable;
+ u16 max_jumbo_frame_size;
+ u8 mcfg;
+ u32 rx_buf_sz;
+
+ struct rtase_ring tx_ring[NUM_TX_QUEUE];
+ struct rtase_txqos tx_qos[NUM_TX_QUEUE];
+ struct rtase_ring rx_ring[NUM_RX_QUEUE];
+ struct rtase_counters *tally_vaddr;
+ dma_addr_t tally_paddr;
+
+ u32 vlan_filter_ctrl;
+ u16 vlan_filter_vid[VLAN_FILTER_ENTRY_NUM];
+
+ struct delayed_work task;
+ u8 hw_ic_ver_unknown;
+ u8 random_mac;
+ u8 org_mac_addr[MAC_ADDR_LEN];
+
+#ifdef ENABLE_RTASE_PROCFS
+ /* Procfs support */
+ struct proc_dir_entry *proc_dir;
+#endif
+#ifdef CONFIG_SRIOV
+ struct vf_info *vf_info;
+ u16 num_vfs;
+ u16 total_vfs;
+#endif
+ struct msix_entry msix_entry[NUM_MSIX];
+ struct rtase_int_vector int_vector[NUM_MSIX];
+
+ u16 tx_queue_ctrl;
+ u16 func_tx_queue_num;
+ u16 func_rx_queue_num;
+ u16 int_nums;
+ u16 tx_int_mit;
+ u16 rx_int_mit;
+
+ /* timeout state */
+ u16 timeout_state;
+
+ /* ptm */
+ u8 ptm_support;
+};
+
+/* mcfg */
+#define CFG_METHOD_1 (0u)
+#define CFG_METHOD_DEFAULT (1u)
+
+#define LSO_64K 64000
+
+#define NIC_MIN_PHYS_BUF_COUNT (2)
+#define NIC_MAX_PHYS_BUF_COUNT_LSO2 (16 * 4)
+
+#define GTTCPHO_SHIFT 18
+
+#define TCPHO_SHIFT 18u
+#define TCPHO_MAX 0x3FFu
+
+#define MSS_MAX 0x07FFu /* MSS value */
+
+void rtase_hw_reset(const struct net_device *dev);
+void rtase_tx_clear(struct rtase_private *tp);
+void rtase_rx_clear(struct rtase_private *tp);
+s32 rtase_init_ring(const struct net_device *dev);
+void rtase_hw_start(const struct net_device *dev);
+void rtase_hw_set_rx_packet_filter(struct net_device *dev);
+void rtase_func_enable(const struct rtase_private *tp);
+void rtase_func_disable(const struct rtase_private *tp);
+
+#endif /* RTASE_H_ */
diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c
new file mode 100644
index 000000000000..96744bd7f6ac
--- /dev/null
+++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c
@@ -0,0 +1,4797 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * rtase is the Linux device driver released for Realtek Automotive Switch
+ * controllers with PCI-Express interface.
+ *
+ * Copyright(c) 2023 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * Author:
+ * Realtek ARD software team
+ * No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
+ *
+ */
+
+/******************************************************************************
+ * This product is covered by one or more of the following patents:
+ * US6,570,884, US6,115,776, and US6,327,625.
+ ******************************************************************************/
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/cdev.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/if_vlan.h>
+#include <linux/crc32.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/tcp.h>
+#include <linux/init.h>
+#include <linux/rtnetlink.h>
+#include <linux/prefetch.h>
+#include <linux/dma-mapping.h>
+#include <linux/moduleparam.h>
+#include <linux/mdio.h>
+#include <net/ip6_checksum.h>
+#include <net/pkt_cls.h>
+
+#include <linux/io.h>
+#include <asm/irq.h>
+
+#include "rtase.h"
+#ifdef CONFIG_SRIOV
+#include "rtase_sriov.h"
+#endif
+
+#ifdef ENABLE_RTASE_PROCFS
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#endif
+
+/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
+ * The RTL chips use a 64 element hash table based on the Ethernet CRC.
+ */
+static struct workqueue_struct *work_queue;
+
+#define _R(NAME, MAC, JUM_FRAME_SZ) \
+ { \
+ .name = NAME, .mcfg = MAC, .jumbo_frame_sz = JUM_FRAME_SZ \
+ }
+
+static const struct {
+ const char *name;
+ u8 mcfg;
+ u16 jumbo_frame_sz;
+} rtl_chip_info[] = {_R("RTL9072", CFG_METHOD_1, JUMBO_FRAME_9K),
+
+ _R("Unknown", CFG_METHOD_DEFAULT, JUMBO_FRAME_1K)};
+#undef _R
+
+static struct pci_device_id rtase_pci_tbl[] = {
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x906A),
+ },
+ {
+ 0,
+ },
+};
+
+MODULE_DEVICE_TABLE(pci, rtase_pci_tbl);
+MODULE_AUTHOR("Realtek ARD Software Team");
+MODULE_DESCRIPTION("Realtek Automotive Switch Ethernet and Network PCIe Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(RTASE_VERSION);
+
+static struct {
+ u32 msg_enable;
+} debug = {-1};
+
+/******************************************************************************
+ * Module Parameters
+ ******************************************************************************/
+static unsigned int txq_ctrl = 1;
+static unsigned int func_txq_num = 1;
+static unsigned int func_rxq_num = 1;
+static unsigned int interrupt_num = 1;
+static int rx_copybreak;
+
+module_param(txq_ctrl, uint, 0);
+MODULE_PARM_DESC(txq_ctrl, "The maximum number of TX queues for PF and VFs.");
+
+module_param(func_txq_num, uint, 0);
+MODULE_PARM_DESC(func_txq_num, "TX queue number for this function.");
+
+module_param(func_rxq_num, uint, 0);
+MODULE_PARM_DESC(func_rxq_num, "RX queue number for this function.");
+
+module_param(interrupt_num, uint, 0);
+MODULE_PARM_DESC(interrupt_num, "Interrupt Vector number for this function.");
+
+module_param(rx_copybreak, int, 0);
+MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
+
+/******************************************************************************
+ * Function Prototype
+ ******************************************************************************/
+static int rtase_open(struct net_device *dev);
+static netdev_tx_t rtase_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static void rtase_set_rx_mode(struct net_device *dev);
+static int rtase_set_mac_address(struct net_device *dev, void *p);
+static int rtase_change_mtu(struct net_device *dev, int new_mtu);
+static void rtase_tx_timeout(struct net_device *dev, unsigned int txqueue);
+static void rtase_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
+static int rtase_vlan_rx_add_vid(struct net_device *dev, __be16 protocol, u16 vid);
+static int rtase_vlan_rx_kill_vid(struct net_device *dev, __be16 protocol, u16 vid);
+static int rtase_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data);
+
+static irqreturn_t rtase_interrupt(int irq, void *dev_instance);
+static irqreturn_t rtase_q_interrupt(int irq, void *dev_instance);
+static void rtase_hw_config(struct net_device *dev);
+static int rtase_close(struct net_device *dev);
+static void rtase_down(struct net_device *dev);
+static void rtase_init_netdev_ops(struct net_device *dev);
+static void rtase_rar_set(const struct rtase_private *tp, const uint8_t *addr);
+static void rtase_desc_addr_fill(const struct rtase_private *tp);
+static void rtase_tx_desc_init(struct rtase_private *tp, u16 idx);
+static void rtase_rx_desc_init(struct rtase_private *tp, u16 idx);
+static void rtase_set_mar(const struct rtase_private *tp);
+static s32 tx_handler(struct rtase_ring *ring, s32 budget);
+static s32 rx_handler(struct rtase_ring *ring, s32 budget);
+static s32 rtase_rxqos(const struct ifreq *ifr, const struct rtase_private *tp);
+static int rtase_poll(struct napi_struct *napi, int budget);
+static void rtase_sw_reset(struct net_device *dev);
+static void rtase_dump_tally_counter(const struct rtase_private *tp, dma_addr_t paddr);
+static s32 rtase_ptm(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 rtase_ptm_function(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 rtase_ptm_get_clock(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 rtase_ptm_swc_set(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 rtase_ptm_swc_get(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 rtase_ptm_reg_get(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 rtase_ptm_reg_set(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 rtase_ptm_auto_update(const struct ifreq *ifr, const struct rtase_private *tp);
+static void dump_tx_desc(const struct rtase_ring *ring);
+static s32 rtase_debug_msg(const struct ifreq *ifr, const struct rtase_private *tp);
+static void mac_ocp_write(const struct rtase_private *tp, u16 reg_addr, u16 value);
+static u16 mac_ocp_read(const struct rtase_private *tp, u16 reg_addr);
+static s32 reg_fun(const struct ifreq *ifr, const struct rtase_private *tp);
+static s32 timeout_sig(const struct ifreq *ifr, struct rtase_private *tp);
+
+/******************************************************************************
+ * Function
+ ******************************************************************************/
+#ifndef SET_ETHTOOL_OPS
+#define SET_ETHTOOL_OPS(netdev, ops) ((netdev)->ethtool_ops = (ops))
+#endif /* SET_ETHTOOL_OPS */
+
+struct rtase_counters {
+ u64 tx_packets;
+ u64 rx_packets;
+ u64 tx_errors;
+ u32 rx_errors;
+ u16 rx_missed;
+ u16 align_errors;
+ u32 tx_one_collision;
+ u32 tx_multi_collision;
+ u64 rx_unicast;
+ u64 rx_broadcast;
+ u32 rx_multicast;
+ u16 tx_aborted;
+ u16 tx_underun;
+};
+
+#ifdef ENABLE_RTASE_PROCFS
+/******************************************************************************
+ * PROCFS STUFF
+ ******************************************************************************/
+static struct proc_dir_entry *rtase_proc;
+static s32 proc_init_num;
+
+static void rtase_dump_tally_counter(const struct rtase_private *tp, dma_addr_t paddr)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 cmd;
+ u32 wait_cnt;
+
+ RTL_W32(DTCCR4, (u32)(paddr >> 32));
+ cmd = (u32)(paddr & DMA_BIT_MASK(32));
+ RTL_W32(DTCCR0, cmd);
+ RTL_W32(DTCCR0, (u32)(cmd | COUNTER_DUMP));
+
+ wait_cnt = 0;
+ while ((RTL_R32(DTCCR0) & COUNTER_DUMP) != 0u) {
+ usleep_range(10, 20);
+
+ wait_cnt++;
+ if (wait_cnt > 20u)
+ break;
+ }
+}
+
+static int proc_get_tally_counter(struct seq_file *m, void *v)
+{
+ const struct net_device *dev = m->private;
+ struct rtase_private *tp = netdev_priv(dev);
+ const struct rtase_counters *counters = NULL;
+ dma_addr_t paddr;
+ unsigned long flags;
+
+ (void)v;
+ seq_puts(m, "\nDump Tally Counter\n");
+
+ counters = tp->tally_vaddr;
+ paddr = tp->tally_paddr;
+ if (!counters) {
+ seq_puts(m, "\nDump Tally Counter Fail\n");
+ goto out;
+ }
+
+ spin_lock_irqsave(&tp->lock, flags);
+ rtase_dump_tally_counter(tp, paddr);
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ seq_puts(m, "Statistics\tValue\n----------\t-----\n");
+ seq_printf(m, "tx_packets\t%lld\n", le64_to_cpu(counters->tx_packets));
+ seq_printf(m, "rx_packets\t%lld\n", le64_to_cpu(counters->rx_packets));
+ seq_printf(m, "tx_errors\t%lld\n", le64_to_cpu(counters->tx_errors));
+ seq_printf(m, "rx_missed\t%lld\n", le64_to_cpu(counters->rx_missed));
+ seq_printf(m, "align_errors\t%lld\n", le64_to_cpu(counters->align_errors));
+ seq_printf(m, "tx_one_collision\t%lld\n", le64_to_cpu(counters->tx_one_collision));
+ seq_printf(m, "tx_multi_collision\t%lld\n", le64_to_cpu(counters->tx_multi_collision));
+ seq_printf(m, "rx_unicast\t%lld\n", le64_to_cpu(counters->rx_unicast));
+ seq_printf(m, "rx_broadcast\t%lld\n", le64_to_cpu(counters->rx_broadcast));
+ seq_printf(m, "rx_multicast\t%lld\n", le64_to_cpu(counters->rx_multicast));
+ seq_printf(m, "tx_aborted\t%lld\n", le64_to_cpu(counters->tx_aborted));
+ seq_printf(m, "tx_underun\t%lld\n", le64_to_cpu(counters->tx_underun));
+
+ seq_putc(m, '\n');
+
+out:
+ return 0;
+}
+
+static int proc_get_pci_registers(struct seq_file *m, void *v)
+{
+ const struct net_device *dev = m->private;
+ s32 n = 0;
+ s32 max_reg_size = RTASE_PCI_REGS_SIZE;
+ u32 dword_rd;
+ struct rtase_private *tp = netdev_priv(dev);
+ unsigned long flags;
+
+ (void)v;
+ seq_puts(m, "\nDump PCI Registers\n");
+ seq_puts(m, "\nOffset\tValue\n------\t-----\n ");
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ while (n < max_reg_size) {
+ if ((n % DWORD_MOD) == 0)
+ seq_printf(m, "\n0x%03x:\t", n);
+
+ pci_read_config_dword(tp->pdev, n, &dword_rd);
+ seq_printf(m, "%08x ", dword_rd);
+ n += 4;
+ }
+
+ n = 0x110;
+ pci_read_config_dword(tp->pdev, n, &dword_rd);
+ seq_printf(m, "\n0x%03x:\t%08x ", n, dword_rd);
+ n = 0x70C;
+ pci_read_config_dword(tp->pdev, n, &dword_rd);
+ seq_printf(m, "\n0x%03x:\t%08x ", n, dword_rd);
+
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ seq_putc(m, '\n');
+ return 0;
+}
+
+static void rtase_proc_module_init(void)
+{
+ /* create /proc/net/rtase */
+ rtase_proc = proc_mkdir(MODULENAME, init_net.proc_net);
+
+ if (!rtase_proc)
+ dprintk("cannot create %s proc entry\n", MODULENAME);
+}
+
+/* seq_file wrappers for procfile show routines.
+ */
+static int rtase_proc_open(struct inode *p_inode, struct file *p_file)
+{
+ struct net_device *dev = proc_get_parent_data(p_inode);
+ int (*show)(struct seq_file *seq, void *v) = pde_data(p_inode);
+
+ return single_open(p_file, show, dev);
+}
+
+static const struct proc_ops rtase_proc_fops = {
+ .proc_open = rtase_proc_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
+};
+
+/* Table of proc files we need to create.
+ */
+struct rtase_proc_file {
+ char name[12];
+ int (*show)(struct seq_file *seq, void *v);
+};
+
+static const struct rtase_proc_file rtase_proc_files[] = {
+ {"tally", &proc_get_tally_counter}, {"pci_regs", &proc_get_pci_registers}, {""}};
+
+static void rtase_proc_init(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ const struct rtase_proc_file *f;
+ struct proc_dir_entry *dir = NULL;
+
+ if (rtase_proc && !tp->proc_dir) {
+ dir = proc_mkdir_data(dev->name, 0, rtase_proc, dev);
+ if (!dir) {
+ netdev_info(dev, "Unable to initialize /proc/net/%s/%s\n", MODULENAME,
+ dev->name);
+ goto out;
+ }
+
+ tp->proc_dir = dir;
+ proc_init_num++;
+
+ for (f = rtase_proc_files; f->name[0] != '\0'; f++) {
+ if (proc_create_data(f->name, S_IFREG | S_IRUGO, dir, &rtase_proc_fops,
+ f->show)
+ == NULL) {
+ netdev_info(dev, "Unable to initialize /proc/net/%s/%s/%s\n",
+ MODULENAME, dev->name, f->name);
+ goto out;
+ }
+ }
+ }
+
+out:
+ return;
+}
+
+static void rtase_proc_remove(const struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+
+ if (tp->proc_dir) {
+ remove_proc_subtree(dev->name, rtase_proc);
+ proc_init_num--;
+ tp->proc_dir = NULL;
+ }
+}
+
+#endif /* ENABLE_RTASE_PROCFS */
+
+static void mac_ocp_write(const struct rtase_private *tp, u16 reg_addr, u16 value)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 data32;
+
+ WARN_ON_ONCE(reg_addr % 2u);
+
+ data32 = ((u32)reg_addr / 2u);
+ data32 <<= OCPR_ADDR_REG_SHIFT;
+ data32 += value;
+ data32 |= OCPR_WRITE;
+
+ RTL_W32(PDR, data32);
+}
+
+static u16 mac_ocp_read(const struct rtase_private *tp, u16 reg_addr)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 data32;
+ u16 data16 = 0;
+
+ WARN_ON_ONCE(reg_addr % 2u);
+
+ data32 = ((u32)reg_addr / 2u);
+ data32 <<= OCPR_ADDR_REG_SHIFT;
+
+ RTL_W32(PDR, data32);
+ data16 = (u16)RTL_R32(PDR);
+
+ return data16;
+}
+
+static void rtase_interrupt_mitigation(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 i = 0;
+
+ /* tx interrupt mitigation */
+ for (i = 0u; i < tp->func_tx_queue_num; i++)
+ RTL_W16((INT_MITI_TX + (i * 2u)), tp->tx_int_mit);
+
+ /* rx interrupt mitigation */
+ for (i = 0u; i < tp->func_rx_queue_num; i++)
+ RTL_W16((INT_MITI_RX + (i * 2u)), tp->rx_int_mit);
+}
+
+static inline void rtase_enable_hw_interrupt(const struct rtase_private *tp)
+{
+ const struct rtase_int_vector *ivec = &tp->int_vector[0];
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 i = 0;
+
+ RTL_W32(ivec->imr_addr, ivec->imr);
+
+ for (i = 1; i < tp->int_nums; i++) {
+ ivec = &tp->int_vector[i];
+ RTL_W16(ivec->imr_addr, (u16)ivec->imr);
+ }
+}
+
+static void rtase_irq_mask_and_ack(const struct rtase_private *tp)
+{
+ const struct rtase_int_vector *ivec = &tp->int_vector[0];
+ void __iomem *ioaddr = tp->mmio_addr;
+ u8 i = 0;
+
+ RTL_W32(ivec->imr_addr, 0);
+ RTL_W32(ivec->isr_addr, RTL_R32(ivec->isr_addr));
+
+ for (i = 1; i < tp->int_nums; i++) {
+ ivec = &tp->int_vector[i];
+ RTL_W16(ivec->imr_addr, 0);
+ RTL_W16(ivec->isr_addr, RTL_R16(ivec->isr_addr));
+ }
+}
+
+static void rtase_nic_reset(const struct net_device *dev)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 i = 0;
+ u16 rx_config;
+
+ rx_config = RTL_R16(RX_CONFIG_0);
+ RTL_W16(RX_CONFIG_0, (u16)(rx_config & ~ACCEPT_MASK));
+
+ /* rxdv_gated_en - mask rxdv in PHYIO */
+ RTL_W8(MISC, (u8)(RTL_R8(MISC) | RX_DV_GATE_EN));
+ /* stop any TLP request from PCIe */
+ RTL_W8(CHIP_CMD, (u8)(RTL_R8(CHIP_CMD) | STOP_REQ));
+ mdelay(2);
+
+ /* wait TLP request done */
+ for (i = 0u; i < 1500u; i++) {
+ if ((RTL_R8(CHIP_CMD) & STOP_REQ_DONE) != 0u)
+ break;
+
+ usleep_range(100, 110);
+ }
+
+ /* wait FIFO empty */
+ for (i = 0u; i < 1000u; i++) {
+ if ((RTL_R8(FIFOR) & (TX_FIFO_EMPTY | RX_FIFO_EMPTY))
+ == (TX_FIFO_EMPTY | RX_FIFO_EMPTY))
+ break;
+
+ usleep_range(100, 110);
+ }
+
+ RTL_W8(CHIP_CMD, (u8)(RTL_R8(CHIP_CMD) & ~(TE | RE)));
+
+ RTL_W8(CHIP_CMD, (u8)(RTL_R8(CHIP_CMD) & ~STOP_REQ));
+
+ RTL_W16(RX_CONFIG_0, rx_config);
+}
+
+static void rtase_nic_enable(const struct net_device *dev)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 rcr = RTL_R16(RX_CONFIG_1);
+
+ /* PCIe PLA reload */
+ RTL_W16(RX_CONFIG_1, (u16)(rcr & ~PCIE_RELOAD_En));
+ RTL_W16(RX_CONFIG_1, (u16)(rcr | PCIE_RELOAD_En));
+
+ /* Set PCIe TE & RE */
+ RTL_W8(CHIP_CMD, (u8)(RTL_R8(CHIP_CMD) | (TE | RE)));
+
+ /* Clear rxdv_gated_en */
+ RTL_W8(MISC, (u8)(RTL_R8(MISC) & ~RX_DV_GATE_EN));
+}
+
+void rtase_func_enable(const struct rtase_private *tp)
+{
+ u16 i = 0u;
+ u16 cr = 0u;
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ /* Polling function TE & RE */
+ for (i = 0u; i < 1500u; i++) {
+ if ((RTL_R16(FCR) & (FCR_TE | FCR_RE)) == 0u)
+ break;
+
+ usleep_range(100, 110);
+ }
+
+ /* Set function TE & RE */
+ cr = RTL_R16(FCR);
+ cr |= (u16)(FCR_TE | FCR_RE);
+ RTL_W16(FCR, cr);
+}
+
+void rtase_func_disable(const struct rtase_private *tp)
+{
+ u16 i = 0;
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ /* Clear function TE & RE */
+ RTL_W16(FCR, (u16)(RTL_R16(FCR) & ~(FCR_TE | FCR_RE)));
+
+ /* Polling function TE & RE */
+ for (i = 0u; i < 1500u; i++) {
+ if ((RTL_R16(FCR) & (FCR_TE | FCR_RE)) == 0u)
+ break;
+
+ usleep_range(100, 110);
+ }
+}
+
+void rtase_hw_reset(const struct net_device *dev)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+
+ /* disable & clear interrupts */
+ rtase_irq_mask_and_ack(tp);
+
+ /* nic reset */
+ rtase_nic_reset(dev);
+}
+
+static void rtase_enable_EEM_write(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ RTL_W8(EEM, (RTL_R8(EEM) | EEM_Unlock));
+}
+
+static void rtase_disable_EEM_write(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ RTL_W8(EEM, (RTL_R8(EEM) & (u8)(~EEM_Unlock)));
+}
+
+static inline u32 rtase_tx_vlan_tag(const struct rtase_private *tp, const struct sk_buff *skb)
+{
+ u32 tag;
+
+ (void)tp;
+
+ tag = (skb_vlan_tag_present(skb) != 0u) ? (u32)(TX_VLAN_TAG | swab16(skb_vlan_tag_get(skb)))
+ : 0x00u;
+
+ return tag;
+}
+
+static s32 rtase_rx_vlan_skb(rx_desc *desc, struct sk_buff *skb)
+{
+ u32 opts2 = le32_to_cpu(desc->desc_status.opts2);
+ s32 ret = -1;
+
+#ifdef RTASE_DEBUG
+ if (opts2 & RX_LBK_FIFO_FULL)
+ pr_alert("PF receive loopback fifo full...");
+
+#endif
+
+ if ((opts2 & RX_VLAN_TAG) != 0u)
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), swab16(opts2 & 0xFFFFu));
+
+ desc->desc_status.opts2 = 0;
+ return ret;
+}
+
+static netdev_features_t rtase_fix_features(struct net_device *dev, netdev_features_t features)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ netdev_features_t features_fix = features;
+ unsigned long flags;
+
+ spin_lock_irqsave(&tp->lock, flags);
+ if (dev->mtu > MSS_MAX)
+ features_fix &= ~NETIF_F_ALL_TSO;
+
+ if (dev->mtu > (u32)ETH_DATA_LEN) {
+ features_fix &= ~NETIF_F_ALL_TSO;
+ features_fix &= ~NETIF_F_ALL_CSUM;
+ }
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ return features_fix;
+}
+
+static s32 rtase_hw_set_features(const struct net_device *dev, netdev_features_t features)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 rx_config;
+
+ rx_config = RTL_R16(RX_CONFIG_0);
+ if ((features & NETIF_F_RXALL) != 0u)
+ rx_config |= (u16)(ACCEPT_ERR | ACCEPT_RUNT);
+ else
+ rx_config &= (u16)(~(ACCEPT_ERR | ACCEPT_RUNT));
+
+ RTL_W16(RX_CONFIG_0, rx_config);
+
+ rx_config = RTL_R16(RX_CONFIG_1);
+ if ((dev->features & NETIF_F_HW_VLAN_RX) != 0u)
+ rx_config |= (u16)(INNER_VLAN_DETAG_EN | OUTER_VLAN_DETAG_EN);
+ else
+ rx_config &= (u16)(~(INNER_VLAN_DETAG_EN | OUTER_VLAN_DETAG_EN));
+
+ RTL_W16(RX_CONFIG_1, rx_config);
+
+ if ((features & NETIF_F_RXCSUM) != 0u)
+ RTL_W16(CPLUS_CMD, (u16)(RTL_R16(CPLUS_CMD) | RX_CHKSUM));
+ else
+ RTL_W16(CPLUS_CMD, (u16)(RTL_R16(CPLUS_CMD) & ~RX_CHKSUM));
+
+ return 0;
+}
+
+static int rtase_set_features(struct net_device *dev, netdev_features_t features)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ netdev_features_t features_set = features;
+ unsigned long flags;
+
+ features_set &= NETIF_F_RXALL | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_RX;
+
+ spin_lock_irqsave(&tp->lock, flags);
+ if ((features_set ^ dev->features) != 0u) {
+ if (rtase_hw_set_features(dev, features_set) != 0)
+ netdev_alert(dev, "unable to set hw feature\n");
+ }
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ return 0;
+}
+
+static const char rtase_gstrings[][ETH_GSTRING_LEN] = {
+ "tx_packets", "rx_packets", "tx_errors", "rx_errors", "rx_missed",
+ "align_errors", "tx_single_collisions", "tx_multi_collisions", "unicast", "broadcast",
+ "multicast", "tx_aborted", "tx_underrun",
+};
+
+static void rtase_get_mac_version(struct rtase_private *tp, const void __iomem *ioaddr)
+{
+ u32 reg_val, hw_ver;
+
+ reg_val = RTL_R32(TX_CONFIG_0);
+ hw_ver = reg_val & 0x7C800000u;
+
+ switch (hw_ver) {
+ case 0x00800000:
+ tp->mcfg = CFG_METHOD_1;
+ break;
+ case 0x04000000:
+ case 0x04800000:
+ tp->mcfg = CFG_METHOD_1;
+ tp->ptm_support = 1;
+ break;
+
+ default:
+ netdev_info(tp->dev, "unknown chip version (%x)\n", hw_ver);
+ tp->mcfg = CFG_METHOD_DEFAULT;
+ tp->hw_ic_ver_unknown = TRUE;
+ break;
+ }
+}
+
+static void rtase_print_mac_version(const struct rtase_private *tp)
+{
+ s16 i;
+ bool flag = false;
+
+ for (i = (s16)(ARRAY_SIZE(rtl_chip_info) - 1u); i >= 0; i--) {
+ if (tp->mcfg == rtl_chip_info[i].mcfg) {
+ dprintk("Realtek PCIe Family Controller mcfg = %04d\n",
+ rtl_chip_info[i].mcfg);
+ flag = true;
+ break;
+ }
+ }
+
+ if (!flag)
+ dprintk("mac_version == Unknown\n");
+}
+
+static void rtase_tally_counter_addr_fill(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ if (tp->tally_paddr != 0u) {
+ RTL_W32(DTCCR4, (u32)(tp->tally_paddr >> 32));
+ RTL_W32(DTCCR0, (u32)(tp->tally_paddr & (DMA_BIT_MASK(32))));
+ }
+}
+
+static void rtase_tally_counter_clear(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ if (tp->tally_paddr != 0u) {
+ RTL_W32(DTCCR4, (u32)(tp->tally_paddr >> 32));
+ RTL_W32(DTCCR0, (u32)((tp->tally_paddr & (DMA_BIT_MASK(32))) | COUNTER_RESET));
+ }
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+
+/* Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void rtase_netpoll(struct net_device *dev)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ const struct pci_dev *pdev = tp->pdev;
+
+ disable_irq(pdev->irq);
+ rtase_interrupt((s32)pdev->irq, dev);
+ enable_irq(pdev->irq);
+}
+#endif
+
+static void rtase_mbx_set_vfmc(const struct rtase_private *tp, u8 vfn)
+{
+ const void __iomem *ioaddr = tp->mmio_addr;
+
+ tp->vf_info[vfn].mc_filter[0] = RTL_R32(VFMSGDATA_0 + ((u32)vfn * 8u));
+ tp->vf_info[vfn].mc_filter[1] = RTL_R32(VFMSGDATA_2 + ((u32)vfn * 8u));
+}
+
+static void rtase_msg_work(struct work_struct *work)
+{
+ static void (*const rtase_mbx_func[])(const struct rtase_private *tp, u8 vfn) = {
+ rtase_mbx_set_vfmc,
+ };
+ const struct rtase_private *tp = container_of(work, struct rtase_private, msg_work);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u8 status = 0;
+
+ status = RTL_R8(PFMSGICRREQ);
+ if (status != 0u) {
+ u16 i = 0u;
+
+ for (i = 0u; i < tp->num_vfs; i++) {
+ if ((status & BIT(i)) != 0u) {
+ rtase_mbx_func[0](tp, i);
+ RTL_W8(PFMSGVF1 + (i * 4u),
+ (u8)(RTL_R8(PFMSGVF1 + ((u32)i * 4u)) | BIT(1)));
+ }
+ }
+ rtase_set_mar(tp);
+ }
+
+ RTL_W8(PFMSGICRREQ, status);
+}
+
+static void rtase_watchdog_work(struct work_struct *work)
+{
+ struct rtase_private *tp = container_of(work, struct rtase_private, watchdog_work);
+ void __iomem *ioaddr = tp->mmio_addr;
+ struct rtase_ring *ring = &tp->tx_ring[0];
+
+ /* Check if there is a packet to transmit. */
+ if (ring->cur_idx != ring->dirty_idx) {
+ /* Determine if dirty_idx has changed. */
+ if (ring->dirty_idx == ring->priv_dirty_idx) {
+ /* Determine whether the Txfifo is empty. */
+ if ((RTL_R8(FIFOR) & TX_FIFO_EMPTY) == TX_FIFO_EMPTY) {
+ /* If it is repeatedly checked that the dirty_idx has not changed 3
+ * times, the software will be reset.
+ */
+ if (ring->duplicate_dirty_count >= TX_DUPLICATE_DIRTYIDX_COUNT)
+ rtase_sw_reset(tp->dev);
+ else
+ ring->duplicate_dirty_count++;
+ } else {
+ ring->duplicate_dirty_count = 0;
+ }
+ } else {
+ ring->duplicate_dirty_count = 0;
+ ring->priv_dirty_idx = ring->dirty_idx;
+ }
+ } else {
+ ring->duplicate_dirty_count = 0;
+ }
+
+ /* reset timer */
+ RTL_W32(TCTR0, 0x0);
+}
+
+static void rtase_init_int_vector(struct rtase_private *tp)
+{
+ u16 i = 0u;
+
+ /* interrupt vector 0 */
+ tp->int_vector[0].tp = tp;
+ memset(tp->int_vector[0].name, 0x0, 20);
+ tp->int_vector[0].index = 0;
+ tp->int_vector[0].imr_addr = IMR0;
+ tp->int_vector[0].isr_addr = ISR0;
+ tp->int_vector[0].imr = (u32)(ROK | RDU | TOK | MBX | TOK4 | TOK5 | TOK6 | TOK7 | TIMEOUT0);
+ INIT_LIST_HEAD(&tp->int_vector[0].ring_list);
+ tp->int_vector[0].weight = RTASE_NAPI_WEIGHT;
+ tp->int_vector[0].poll = rtase_poll;
+ netif_napi_add(tp->dev, &tp->int_vector[0].napi, tp->int_vector[0].poll,
+ tp->int_vector[0].weight);
+ napi_enable(&tp->int_vector[0].napi);
+
+ /* interrupt vector 1 ~ 3 */
+ for (i = 1; i < tp->int_nums; i++) {
+ tp->int_vector[i].tp = tp;
+ memset(tp->int_vector[i].name, 0x0, 20);
+ tp->int_vector[i].index = i;
+ tp->int_vector[i].imr_addr = (IMR1 + ((i - 1u) * 4u));
+ tp->int_vector[i].isr_addr = (ISR1 + ((i - 1u) * 4u));
+ tp->int_vector[i].imr = (u32)(Q_ROK | Q_RDU | Q_TOK);
+ INIT_LIST_HEAD(&tp->int_vector[i].ring_list);
+ tp->int_vector[i].weight = RTASE_NAPI_WEIGHT;
+ tp->int_vector[i].poll = rtase_poll;
+ netif_napi_add(tp->dev, &tp->int_vector[i].napi, tp->int_vector[i].poll,
+ tp->int_vector[i].weight);
+ napi_enable(&tp->int_vector[i].napi);
+ }
+}
+
+static void rtase_init_software_variable(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+
+ spin_lock_init(&tp->lock);
+
+ /* assign module parameters */
+ tp->tx_queue_ctrl = (u16)txq_ctrl;
+ tp->func_tx_queue_num = (u16)func_txq_num;
+ tp->func_rx_queue_num = (u16)func_rxq_num;
+ tp->int_nums = (u16)interrupt_num;
+ tp->tx_int_mit = TX_INT_MITIGATION;
+ tp->rx_int_mit = RX_INT_MITIGATION;
+
+ tp->sw_flag = 0;
+ tp->num_vfs = 0;
+
+ /* initial timeout state */
+ tp->timeout_state = TIMEOUT_INIT;
+
+ /* new, interrutp variables init */
+ rtase_init_int_vector(tp);
+
+ tp->max_jumbo_frame_size = rtl_chip_info[tp->mcfg].jumbo_frame_sz;
+ /* MTU range: 60 - hw-specific max */
+ dev->min_mtu = ETH_ZLEN;
+ dev->max_mtu = tp->max_jumbo_frame_size;
+
+ INIT_WORK(&tp->msg_work, rtase_msg_work);
+ INIT_WORK(&tp->watchdog_work, rtase_watchdog_work);
+}
+
+static void rtase_init_hardware(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 i;
+
+ /* vlan filter table */
+ for (i = 0u; i < VLAN_FILTER_ENTRY_NUM; i++)
+ RTL_W32((VLAN_ENTRY_0 + (i * 4u)), 0);
+}
+
+static void rtase_release_board(struct pci_dev *pdev, struct net_device *dev, void __iomem *ioaddr)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+
+ rtase_rar_set(tp, tp->org_mac_addr);
+ iounmap(ioaddr);
+ if ((tp->sw_flag & SWF_MSIX_ENABLED) != 0u)
+ pci_disable_msix(pdev);
+ else
+ pci_disable_msi(pdev);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ free_netdev(dev);
+}
+
+static void rtase_hw_address_set(struct net_device *dev, const u8 mac_addr[MAC_ADDR_LEN])
+{
+ eth_hw_addr_set(dev, mac_addr);
+}
+
+static s32 rtase_get_mac_address(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ const void __iomem *ioaddr = tp->mmio_addr;
+ u32 i;
+ u8 mac_addr[MAC_ADDR_LEN];
+
+ for (i = 0; i < MAC_ADDR_LEN; i++)
+ mac_addr[i] = RTL_R8(MAC0 + i);
+
+ if (!is_valid_ether_addr(mac_addr)) {
+ netif_err(tp, probe, dev, "Invalid ether addr %pM\n", mac_addr);
+ eth_hw_addr_random(dev);
+ ether_addr_copy(mac_addr, dev->dev_addr);
+ netif_info(tp, probe, dev, "Random ether addr %pM\n", mac_addr);
+ tp->random_mac = 1;
+ }
+
+ rtase_hw_address_set(dev, mac_addr);
+ rtase_rar_set(tp, mac_addr);
+
+ /* keep the original MAC address */
+ memcpy(tp->org_mac_addr, dev->dev_addr, MAC_ADDR_LEN);
+ memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+
+ return 0;
+}
+
+/* rtase_set_mac_address - Change the Ethernet Address of the NIC
+ * @dev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Return 0 on success, negative on failure
+ */
+static int rtase_set_mac_address(struct net_device *dev, void *p)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ const struct sockaddr *addr = p;
+ unsigned long flags;
+ s32 rc = 0;
+
+ if (!is_valid_ether_addr((u8 *)&addr->sa_data)) {
+ rc = -EADDRNOTAVAIL;
+ } else {
+ spin_lock_irqsave(&tp->lock, flags);
+ rtase_hw_address_set(dev, (u8 *)&addr->sa_data);
+ rtase_rar_set(tp, dev->dev_addr);
+ spin_unlock_irqrestore(&tp->lock, flags);
+ }
+
+ return rc;
+}
+
+/* rtase_rar_set - Puts an ethernet address into a receive address register.
+ *
+ * tp - The private data structure for driver
+ * addr - Address to put into receive address register
+ */
+static void rtase_rar_set(const struct rtase_private *tp, const uint8_t *addr)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 rar_low = 0;
+ u32 rar_high = 0;
+
+ rar_low = ((uint32_t)addr[0] | ((uint32_t)addr[1] << 8) | ((uint32_t)addr[2] << 16)
+ | ((uint32_t)addr[3] << 24));
+
+ rar_high = ((uint32_t)addr[4] | ((uint32_t)addr[5] << 8));
+
+ rtase_enable_EEM_write(tp);
+ RTL_W32(MAC0, rar_low);
+ RTL_W32(MAC4, rar_high);
+ rtase_disable_EEM_write(tp);
+ RTL_W16(LBK_CTRL, (u16)(LBK_ATLD | LBK_CLR));
+}
+
+static s32 reg_fun(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ void *useraddr = (void *)ifr->ifr_data;
+ struct reg_rw reg;
+ s32 rc = 0;
+
+ if (copy_from_user(&reg, useraddr, sizeof(struct reg_rw)) != 0u) {
+ rc = -EFAULT;
+ goto out;
+ }
+
+ /* debug channel read */
+ if (reg.cmd == CMD_DBG_READ) {
+ reg.val = mac_ocp_read(tp, reg.addr);
+ if (copy_to_user(useraddr, &reg, sizeof(struct reg_rw)) != 0u) {
+ rc = -EFAULT;
+ goto out;
+ }
+ netdev_info(tp->dev, "\tread reg 0x%04x = 0x%04x", reg.addr, reg.val);
+ }
+ /* debug channel write */
+ else if (reg.cmd == CMD_DBG_WRITE) {
+ mac_ocp_write(tp, reg.addr, (u16)reg.val);
+ netdev_info(tp->dev, "\twrite reg 0x%04x = 0x%04x", reg.addr,
+ mac_ocp_read(tp, reg.addr));
+ }
+ /* mmio read16 */
+ else if (reg.cmd == CMD_REG_READ16) {
+ reg.val = RTL_R16(reg.addr);
+ if (copy_to_user(useraddr, &reg, sizeof(struct reg_rw)) != 0u) {
+ rc = -EFAULT;
+ goto out;
+ }
+ netdev_info(tp->dev, "\tread MMIO 0x%04x = 0x%04x", reg.addr, reg.val);
+ }
+ /* mmio write16 */
+ else if (reg.cmd == CMD_REG_WRITE16) {
+ RTL_W16(reg.addr, (u16)reg.val);
+ netdev_info(tp->dev, "\twrite MMIO 0x%04x = 0x%04x", reg.addr, RTL_R16(reg.addr));
+ }
+ /* mmio read32 */
+ else if (reg.cmd == CMD_REG_READ32) {
+ reg.val = RTL_R32(reg.addr);
+ if (copy_to_user(useraddr, &reg, sizeof(struct reg_rw)) != 0u) {
+ rc = -EFAULT;
+ goto out;
+ }
+ netdev_info(tp->dev, "\tread MMIO 0x%04x = 0x%08x", reg.addr, reg.val);
+ }
+ /* mmio write32 */
+ else if (reg.cmd == CMD_REG_WRITE32) {
+ RTL_W32(reg.addr, reg.val);
+ netdev_info(tp->dev, "\twrite MMIO 0x%04x = 0x%08x", reg.addr, RTL_R16(reg.addr));
+ } else {
+ netdev_info(tp->dev, "reg command error.\n");
+ }
+ pr_info("\t\n");
+
+out:
+ return rc;
+}
+
+static s32 rtase_rxqos(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ void *useraddr = (void *)ifr->ifr_data;
+ struct rtk_qos qos_config;
+ u16 offset = 0;
+ u32 regV = 0;
+ s32 rc = 0;
+
+ if (copy_from_user(&qos_config, useraddr, sizeof(struct rtk_qos)) != 0u) {
+ rc = -EFAULT;
+ goto out;
+ }
+
+ if (qos_config.pcp < 4u)
+ offset = ((u16)qos_config.pcp * 3u);
+ else if (qos_config.pcp < 8u)
+ offset = ((((u16)qos_config.pcp - 4u) * 3u) + 16u);
+ else
+ offset = 28;
+
+ if (qos_config.cmd == CMD_GET_RXQOS) {
+ regV = RTL_R32(RX_PCP_TABLE);
+ qos_config.tc = (u8)((regV >> offset) & 0x7u);
+ if (copy_to_user(useraddr, &qos_config, sizeof(struct rtk_qos)) != 0u) {
+ rc = -EFAULT;
+ goto out;
+ }
+ } else if (qos_config.cmd == CMD_SET_RXQOS) {
+ regV = RTL_R32(RX_PCP_TABLE);
+ regV &= ~((u32)0x7u << offset);
+ regV |= ((u32)qos_config.tc << offset);
+ RTL_W32(RX_PCP_TABLE, regV);
+ } else {
+ netdev_info(tp->dev, "rxqos command error.\n");
+ }
+ pr_info("\t\n");
+
+out:
+ return rc;
+}
+
+static s32 timeout_sig(const struct ifreq *ifr, struct rtase_private *tp)
+{
+ void *useraddr = (void *)ifr->ifr_data;
+ struct rtk_timeout_sig rtk_timeout_sig;
+ s32 rc = 0;
+
+ if (copy_from_user(&rtk_timeout_sig, useraddr, sizeof(struct rtk_timeout_sig)) != 0u) {
+ rc = -EFAULT;
+ } else {
+ if (rtk_timeout_sig.cmd == CMD_GET_TIMSIG) {
+ rtk_timeout_sig.state = tp->timeout_state;
+
+ if (copy_to_user(useraddr, &rtk_timeout_sig, sizeof(struct rtk_timeout_sig))
+ != 0u)
+ rc = -EFAULT;
+ } else if (rtk_timeout_sig.cmd == CMD_SET_TIMSIG) {
+ tp->timeout_state = rtk_timeout_sig.state;
+ } else {
+ netdev_info(tp->dev, "%s command error.\n", __func__);
+ }
+ }
+
+ return rc;
+}
+
+static s32 rtase_ptm(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ const void *useraddr = (void *)ifr->ifr_data;
+ struct rtase_ptm_cmd_t cmd;
+ s32 ret;
+ u32 size;
+
+ static s32 (*const ptm_cmd_info[])(const struct ifreq *ifr,
+ const struct rtase_private *tp) = {
+ rtase_ptm_function, rtase_ptm_get_clock, rtase_ptm_swc_get, rtase_ptm_reg_get,
+ rtase_ptm_swc_set, rtase_ptm_reg_set, rtase_ptm_auto_update,
+ };
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ } else {
+ size = (u32)ARRAY_SIZE(ptm_cmd_info);
+
+ if (cmd.type >= size)
+ ret = -EFAULT;
+ else
+ ret = ptm_cmd_info[cmd.type](ifr, tp);
+ }
+
+ return ret;
+}
+
+static s32 rtase_ptm_function(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ const void *useraddr = (void *)ifr->ifr_data;
+ struct rtase_ptm_cmd_t cmd;
+ struct pci_dev *pdev = tp->pdev;
+ s32 ptm_pos = 0;
+ s32 ret = 0;
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ } else {
+ ptm_pos = (s32)(pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PTM));
+
+ if (ptm_pos == 0) {
+ netdev_info(tp->dev, "can't find ptm position.");
+ ret = -EFAULT;
+ } else {
+ if (cmd.enable == 1u) {
+ /* ptm enable */
+ pci_write_config_byte(pdev, ptm_pos + 8, 0x1u);
+ } else if (cmd.enable == 0u) {
+ /* ptm disable */
+ pci_write_config_byte(pdev, ptm_pos + 8, 0x0u);
+ } else {
+ netdev_info(tp->dev, "%s command error.\n", __func__);
+ }
+ }
+ }
+
+ return ret;
+}
+
+static s32 rtase_ptm_reg_get(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ const void __iomem *ioaddr = tp->mmio_addr;
+ void *useraddr = (void *)ifr->ifr_data;
+ struct rtase_ptm_cmd_t cmd;
+ s32 ret = 0;
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ } else {
+ cmd.reg_value = RTL_R16(cmd.reg_addr);
+ if (copy_to_user(useraddr, &cmd, sizeof(struct rtase_ptm_cmd_t)) != 0u)
+ ret = -EFAULT;
+ }
+
+ return ret;
+}
+
+static s32 rtase_ptm_reg_set(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ const void *useraddr = (void *)ifr->ifr_data;
+ struct rtase_ptm_cmd_t cmd;
+ s32 ret = 0;
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ } else {
+ if (cmd.bits == 16u)
+ RTL_W16(cmd.reg_addr, (u16)cmd.reg_value);
+ else if (cmd.bits == 32u)
+ RTL_W32(cmd.reg_addr, cmd.reg_value);
+ else
+ netdev_info(tp->dev, "%s command error.\n", __func__);
+ }
+
+ return ret;
+}
+
+static s32 rtase_ptm_auto_update(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ const void *useraddr = (void *)ifr->ifr_data;
+ struct pci_dev *pdev = tp->pdev;
+ struct rtase_ptm_cmd_t cmd;
+ s32 ptm_pos = 0;
+ s32 ret = 0;
+
+ ptm_pos = (s32)(pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PTM));
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ } else {
+ if (ptm_pos == 0) {
+ netdev_warn(tp->dev, "can't find ptm position.");
+ ret = -EFAULT;
+ } else {
+ if (cmd.enable == 1u)
+ pci_write_config_byte(pdev, ptm_pos + 20, 0x1u);
+ else
+ pci_write_config_byte(pdev, ptm_pos + 20, 0x0u);
+ }
+ }
+
+ return ret;
+}
+
+/******************************************************************************
+ * Ethtool Operations
+ ******************************************************************************/
+static void rtase_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+
+ strscpy(drvinfo->driver, MODULENAME, 32);
+ strscpy(drvinfo->version, RTASE_VERSION, 32);
+ strscpy(drvinfo->bus_info, pci_name(tp->pdev), 32);
+}
+
+#undef ethtool_op_get_link
+#define ethtool_op_get_link _kc_ethtool_op_get_link
+static u32 _kc_ethtool_op_get_link(struct net_device *dev)
+{
+ return netif_carrier_ok(dev) ? 1u : 0u;
+}
+
+static int rtase_get_settings(struct net_device *dev, struct ethtool_link_ksettings *cmd)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ const void __iomem *ioaddr = tp->mmio_addr;
+ u32 supported = 0;
+ u32 advertising = 0;
+ u32 speed = 0;
+ u16 value = 0;
+
+ supported |= (u32)(SUPPORTED_MII | SUPPORTED_Pause);
+
+ advertising |= (u32)ADVERTISED_MII;
+
+ /* speed */
+ switch (tp->pdev->bus->cur_bus_speed) {
+ case PCIE_SPEED_2_5GT:
+ speed = SPEED_1000;
+ break;
+ case PCIE_SPEED_5_0GT:
+ speed = SPEED_2500;
+ break;
+ case PCIE_SPEED_8_0GT:
+ speed = SPEED_5000;
+ break;
+ default:
+ /* nothing to do. */
+ break;
+ }
+
+ /* pause */
+ value = RTL_R16(CPLUS_CMD);
+ if ((value & (FORCE_TXFLOW_EN | FORCE_RXFLOW_EN)) == (FORCE_TXFLOW_EN | FORCE_RXFLOW_EN))
+ advertising |= (u32)ADVERTISED_Pause;
+ else if ((value & FORCE_TXFLOW_EN) != 0u)
+ advertising |= (u32)ADVERTISED_Asym_Pause;
+ else if ((value & FORCE_RXFLOW_EN) != 0u)
+ advertising |= (u32)(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
+ else
+ netdev_info(dev, "pause is disable\n");
+
+ ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, supported);
+ ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, advertising);
+ cmd->base.speed = speed;
+ cmd->base.duplex = DUPLEX_FULL;
+ cmd->base.port = PORT_MII;
+
+ return 0;
+}
+
+static void rtase_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam *pause)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ const void __iomem *ioaddr = tp->mmio_addr;
+ u16 value = RTL_R16(CPLUS_CMD);
+
+ if ((value & (FORCE_TXFLOW_EN | FORCE_RXFLOW_EN)) == (FORCE_TXFLOW_EN | FORCE_RXFLOW_EN)) {
+ pause->rx_pause = 1;
+ pause->tx_pause = 1;
+ } else if ((value & FORCE_TXFLOW_EN) != 0u) {
+ pause->tx_pause = 1;
+ } else if ((value & FORCE_RXFLOW_EN) != 0u) {
+ pause->rx_pause = 1;
+ } else {
+ /* not enable pause */
+ }
+}
+
+static int rtase_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam *pause)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 value = RTL_R16(CPLUS_CMD);
+
+ value &= (u16)(~(FORCE_TXFLOW_EN | FORCE_RXFLOW_EN));
+
+ if (pause->tx_pause == 1u)
+ value |= (u16)FORCE_TXFLOW_EN;
+
+ if (pause->rx_pause == 1u)
+ value |= (u16)FORCE_RXFLOW_EN;
+
+ RTL_W16(CPLUS_CMD, value);
+ return 0;
+}
+
+static u32 rtase_get_msglevel(struct net_device *dev)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+
+ return tp->msg_enable;
+}
+
+static void rtase_set_msglevel(struct net_device *dev, u32 value)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+
+ tp->msg_enable = value;
+}
+
+static void rtase_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+ (void)dev;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ memcpy(data, (u8 *)&rtase_gstrings, sizeof(rtase_gstrings));
+ break;
+ default:
+ /* nothing to do. */
+ break;
+ }
+}
+
+static int rtase_get_sset_count(struct net_device *dev, int sset)
+{
+ int ret = 0;
+
+ (void)dev;
+
+ switch (sset) {
+ case ETH_SS_STATS:
+ ret = (int)(ARRAY_SIZE(rtase_gstrings));
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
+
+static void rtase_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ const struct rtase_counters *counters;
+ dma_addr_t paddr;
+ unsigned long flags;
+
+ ASSERT_RTNL();
+
+ (void)stats;
+ counters = tp->tally_vaddr;
+ paddr = tp->tally_paddr;
+ if (!counters)
+ goto out;
+
+ spin_lock_irqsave(&tp->lock, flags);
+ rtase_dump_tally_counter(tp, paddr);
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ data[0] = le64_to_cpu(counters->tx_packets);
+ data[1] = le64_to_cpu(counters->rx_packets);
+ data[2] = le64_to_cpu(counters->tx_errors);
+ data[3] = le32_to_cpu(counters->rx_errors);
+ data[4] = le16_to_cpu(counters->rx_missed);
+ data[5] = le16_to_cpu(counters->align_errors);
+ data[6] = le32_to_cpu(counters->tx_one_collision);
+ data[7] = le32_to_cpu(counters->tx_multi_collision);
+ data[8] = le64_to_cpu(counters->rx_unicast);
+ data[9] = le64_to_cpu(counters->rx_broadcast);
+ data[10] = le32_to_cpu(counters->rx_multicast);
+ data[11] = le16_to_cpu(counters->tx_aborted);
+ data[12] = le16_to_cpu(counters->tx_underun);
+
+out:
+ return;
+}
+
+static const struct ethtool_ops rtase_ethtool_ops = {
+ .get_drvinfo = rtase_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_link_ksettings = rtase_get_settings,
+ .get_pauseparam = rtase_get_pauseparam,
+ .set_pauseparam = rtase_set_pauseparam,
+ .get_msglevel = rtase_get_msglevel,
+ .set_msglevel = rtase_set_msglevel,
+ .get_strings = rtase_get_strings,
+ .get_sset_count = rtase_get_sset_count,
+ .get_ethtool_stats = rtase_get_ethtool_stats,
+ .get_ts_info = ethtool_op_get_ts_info,
+};
+
+/******************************************************************************
+ * Ethtool Compatibility
+ ******************************************************************************/
+#ifdef ETHTOOL_OPS_COMPAT
+static int ethtool_get_settings(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_cmd cmd = {ETHTOOL_GSET};
+ int err;
+
+ if (!ethtool_ops->get_settings)
+ return -EOPNOTSUPP;
+
+ err = ethtool_ops->get_settings(dev, &cmd);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(useraddr, &cmd, sizeof(cmd)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_settings(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_cmd cmd;
+
+ if (!ethtool_ops->set_settings)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&cmd, useraddr, sizeof(cmd)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_settings(dev, &cmd);
+}
+
+static int ethtool_get_drvinfo(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_drvinfo info;
+ const struct ethtool_ops *ops = ethtool_ops;
+
+ if (!ops->get_drvinfo)
+ return -EOPNOTSUPP;
+
+ memset(&info, 0, sizeof(info));
+ info.cmd = ETHTOOL_GDRVINFO;
+ ops->get_drvinfo(dev, &info);
+
+ if (ops->self_test_count)
+ info.testinfo_len = ops->self_test_count(dev);
+ if (ops->get_stats_count)
+ info.n_stats = ops->get_stats_count(dev);
+ if (ops->get_regs_len)
+ info.regdump_len = ops->get_regs_len(dev);
+ if (ops->get_eeprom_len)
+ info.eedump_len = ops->get_eeprom_len(dev);
+
+ if (copy_to_user(useraddr, &info, sizeof(info)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_get_regs(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_regs regs;
+ const struct ethtool_ops *ops = ethtool_ops;
+ void *regbuf;
+ int reglen, ret;
+
+ if (!ops->get_regs || !ops->get_regs_len)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&regs, useraddr, sizeof(regs)) != 0u)
+ return -EFAULT;
+
+ reglen = ops->get_regs_len(dev);
+ if (regs.len > reglen)
+ regs.len = reglen;
+
+ regbuf = kmalloc(reglen, GFP_USER);
+ if (!regbuf)
+ return -ENOMEM;
+
+ ops->get_regs(dev, &regs, regbuf);
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &regs, sizeof(regs)) != 0u)
+ goto out;
+ useraddr += offsetof(struct ethtool_regs, data);
+ if (copy_to_user(useraddr, regbuf, reglen) != 0u)
+ goto out;
+ ret = 0;
+
+out:
+ kfree(regbuf);
+ return ret;
+}
+
+static int ethtool_get_wol(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_wolinfo wol = {ETHTOOL_GWOL};
+
+ if (!ethtool_ops->get_wol)
+ return -EOPNOTSUPP;
+
+ ethtool_ops->get_wol(dev, &wol);
+
+ if (copy_to_user(useraddr, &wol, sizeof(wol)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_wol(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_wolinfo wol;
+
+ if (!ethtool_ops->set_wol)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&wol, useraddr, sizeof(wol)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_wol(dev, &wol);
+}
+
+static int ethtool_get_msglevel(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata = {ETHTOOL_GMSGLVL};
+
+ if (!ethtool_ops->get_msglevel)
+ return -EOPNOTSUPP;
+
+ edata.data = ethtool_ops->get_msglevel(dev);
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_msglevel(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (!ethtool_ops->set_msglevel)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)) != 0u)
+ return -EFAULT;
+
+ ethtool_ops->set_msglevel(dev, edata.data);
+ return 0;
+}
+
+static int ethtool_nway_reset(struct net_device *dev)
+{
+ if (!ethtool_ops->nway_reset)
+ return -EOPNOTSUPP;
+
+ return ethtool_ops->nway_reset(dev);
+}
+
+static int ethtool_get_link(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_value edata = {ETHTOOL_GLINK};
+
+ if (!ethtool_ops->get_link)
+ return -EOPNOTSUPP;
+
+ edata.data = ethtool_ops->get_link(dev);
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_get_eeprom(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_eeprom eeprom;
+ const struct ethtool_ops *ops = ethtool_ops;
+ u8 *data;
+ int ret;
+
+ if (!ops->get_eeprom || !ops->get_eeprom_len)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)) != 0u)
+ return -EFAULT;
+
+ /* Check for wrap and zero */
+ if (eeprom.offset + eeprom.len <= eeprom.offset)
+ return -EINVAL;
+
+ /* Check for exceeding total eeprom len */
+ if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
+ return -EINVAL;
+
+ data = kmalloc(eeprom.len, GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+ ret = -EFAULT;
+ if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len) != 0u)
+ goto out;
+
+ ret = ops->get_eeprom(dev, &eeprom, data);
+ if (ret)
+ goto out;
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)) != 0u)
+ goto out;
+ if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len) != 0u)
+ goto out;
+ ret = 0;
+
+out:
+ kfree(data);
+ return ret;
+}
+
+static int ethtool_set_eeprom(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_eeprom eeprom;
+ const struct ethtool_ops *ops = ethtool_ops;
+ u8 *data;
+ int ret;
+
+ if (!ops->set_eeprom || !ops->get_eeprom_len)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)) != 0u)
+ return -EFAULT;
+
+ /* Check for wrap and zero */
+ if (eeprom.offset + eeprom.len <= eeprom.offset)
+ return -EINVAL;
+
+ /* Check for exceeding total eeprom len */
+ if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
+ return -EINVAL;
+
+ data = kmalloc(eeprom.len, GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+ ret = -EFAULT;
+ if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len) != 0u)
+ goto out;
+
+ ret = ops->set_eeprom(dev, &eeprom, data);
+ if (ret)
+ goto out;
+
+ if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len) != 0u)
+ ret = -EFAULT;
+
+out:
+ kfree(data);
+ return ret;
+}
+
+static int ethtool_get_coalesce(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_coalesce coalesce = {ETHTOOL_GCOALESCE};
+
+ if (!ethtool_ops->get_coalesce)
+ return -EOPNOTSUPP;
+
+ ethtool_ops->get_coalesce(dev, &coalesce);
+
+ if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_coalesce(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_coalesce coalesce;
+
+ if (!ethtool_ops->get_coalesce)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_coalesce(dev, &coalesce);
+}
+
+static int ethtool_get_ringparam(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_ringparam ringparam = {ETHTOOL_GRINGPARAM};
+
+ if (!ethtool_ops->get_ringparam)
+ return -EOPNOTSUPP;
+
+ ethtool_ops->get_ringparam(dev, &ringparam);
+
+ if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_ringparam(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_ringparam ringparam;
+
+ if (!ethtool_ops->get_ringparam)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_ringparam(dev, &ringparam);
+}
+
+static int ethtool_get_pauseparam(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_pauseparam pauseparam = {ETHTOOL_GPAUSEPARAM};
+
+ if (!ethtool_ops->get_pauseparam)
+ return -EOPNOTSUPP;
+
+ ethtool_ops->get_pauseparam(dev, &pauseparam);
+
+ if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_pauseparam(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_pauseparam pauseparam;
+
+ if (!ethtool_ops->get_pauseparam)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_pauseparam(dev, &pauseparam);
+}
+
+static int ethtool_get_rx_csum(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata = {ETHTOOL_GRXCSUM};
+
+ if (!ethtool_ops->get_rx_csum)
+ return -EOPNOTSUPP;
+
+ edata.data = ethtool_ops->get_rx_csum(dev);
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_rx_csum(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (!ethtool_ops->set_rx_csum)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)) != 0u)
+ return -EFAULT;
+
+ ethtool_ops->set_rx_csum(dev, edata.data);
+ return 0;
+}
+
+static int ethtool_get_tx_csum(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata = {ETHTOOL_GTXCSUM};
+
+ if (!ethtool_ops->get_tx_csum)
+ return -EOPNOTSUPP;
+
+ edata.data = ethtool_ops->get_tx_csum(dev);
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_tx_csum(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (!ethtool_ops->set_tx_csum)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_tx_csum(dev, edata.data);
+}
+
+static int ethtool_get_sg(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata = {ETHTOOL_GSG};
+
+ if (!ethtool_ops->get_sg)
+ return -EOPNOTSUPP;
+
+ edata.data = ethtool_ops->get_sg(dev);
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_sg(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (!ethtool_ops->set_sg)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_sg(dev, edata.data);
+}
+
+static int ethtool_get_tso(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata = {ETHTOOL_GTSO};
+
+ if (!ethtool_ops->get_tso)
+ return -EOPNOTSUPP;
+
+ edata.data = ethtool_ops->get_tso(dev);
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)) != 0u)
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_tso(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (!ethtool_ops->set_tso)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->set_tso(dev, edata.data);
+}
+
+static int ethtool_self_test(struct net_device *dev, char *useraddr)
+{
+ struct ethtool_test test;
+ const struct ethtool_ops *ops = ethtool_ops;
+ u64 *data;
+ int ret;
+
+ if (!ops->self_test || !ops->self_test_count)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&test, useraddr, sizeof(test)) != 0u)
+ return -EFAULT;
+
+ test.len = ops->self_test_count(dev);
+ data = kmalloc(test.len * sizeof(u64), GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+ ops->self_test(dev, &test, data);
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &test, sizeof(test)) != 0u)
+ goto out;
+ useraddr += sizeof(test);
+ if (copy_to_user(useraddr, data, test.len * sizeof(u64)) != 0u)
+ goto out;
+ ret = 0;
+
+out:
+ kfree(data);
+ return ret;
+}
+
+static int ethtool_get_strings(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_gstrings gstrings;
+ const struct ethtool_ops *ops = ethtool_ops;
+ u8 *data;
+ int ret;
+
+ if (!ops->get_strings)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)) != 0u)
+ return -EFAULT;
+
+ switch (gstrings.string_set) {
+ case ETH_SS_TEST:
+ if (!ops->self_test_count)
+ return -EOPNOTSUPP;
+ gstrings.len = ops->self_test_count(dev);
+ break;
+ case ETH_SS_STATS:
+ if (!ops->get_stats_count)
+ return -EOPNOTSUPP;
+ gstrings.len = ops->get_stats_count(dev);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+ ops->get_strings(dev, gstrings.string_set, data);
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)) != 0u)
+ goto out;
+ useraddr += sizeof(gstrings);
+ if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN) != 0u)
+ goto out;
+ ret = 0;
+
+out:
+ kfree(data);
+ return ret;
+}
+
+static int ethtool_phys_id(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_value id;
+
+ if (!ethtool_ops->phys_id)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&id, useraddr, sizeof(id)) != 0u)
+ return -EFAULT;
+
+ return ethtool_ops->phys_id(dev, id.data);
+}
+
+static int ethtool_get_stats(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_stats stats;
+ const struct ethtool_ops *ops = ethtool_ops;
+ u64 *data;
+ int ret;
+
+ if (!ops->get_ethtool_stats || !ops->get_stats_count)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&stats, useraddr, sizeof(stats)) != 0u)
+ return -EFAULT;
+
+ stats.n_stats = ops->get_stats_count(dev);
+ data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+ ops->get_ethtool_stats(dev, &stats, data);
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &stats, sizeof(stats)) != 0u)
+ goto out;
+ useraddr += sizeof(stats);
+ if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)) != 0u)
+ goto out;
+ ret = 0;
+
+out:
+ kfree(data);
+ return ret;
+}
+
+static int ethtool_ioctl(struct ifreq *ifr)
+{
+ struct net_device *dev = __dev_get_by_name(ifr->ifr_name);
+ void *useraddr = (void *)ifr->ifr_data;
+ u32 ethcmd;
+
+ /* XXX: This can be pushed down into the ethtool_* handlers that
+ * need it. Keep existing behavior for the moment.
+ */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (!dev || !netif_device_present(dev))
+ return -ENODEV;
+
+ if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)) != 0u)
+ return -EFAULT;
+
+ switch (ethcmd) {
+ case ETHTOOL_GSET:
+ return ethtool_get_settings(dev, useraddr);
+ case ETHTOOL_SSET:
+ return ethtool_set_settings(dev, useraddr);
+ case ETHTOOL_GDRVINFO:
+ return ethtool_get_drvinfo(dev, useraddr);
+ case ETHTOOL_GREGS:
+ return ethtool_get_regs(dev, useraddr);
+ case ETHTOOL_GWOL:
+ return ethtool_get_wol(dev, useraddr);
+ case ETHTOOL_SWOL:
+ return ethtool_set_wol(dev, useraddr);
+ case ETHTOOL_GMSGLVL:
+ return ethtool_get_msglevel(dev, useraddr);
+ case ETHTOOL_SMSGLVL:
+ return ethtool_set_msglevel(dev, useraddr);
+ case ETHTOOL_NWAY_RST:
+ return ethtool_nway_reset(dev);
+ case ETHTOOL_GLINK:
+ return ethtool_get_link(dev, useraddr);
+ case ETHTOOL_GEEPROM:
+ return ethtool_get_eeprom(dev, useraddr);
+ case ETHTOOL_SEEPROM:
+ return ethtool_set_eeprom(dev, useraddr);
+ case ETHTOOL_GCOALESCE:
+ return ethtool_get_coalesce(dev, useraddr);
+ case ETHTOOL_SCOALESCE:
+ return ethtool_set_coalesce(dev, useraddr);
+ case ETHTOOL_GRINGPARAM:
+ return ethtool_get_ringparam(dev, useraddr);
+ case ETHTOOL_SRINGPARAM:
+ return ethtool_set_ringparam(dev, useraddr);
+ case ETHTOOL_GPAUSEPARAM:
+ return ethtool_get_pauseparam(dev, useraddr);
+ case ETHTOOL_SPAUSEPARAM:
+ return ethtool_set_pauseparam(dev, useraddr);
+ case ETHTOOL_GRXCSUM:
+ return ethtool_get_rx_csum(dev, useraddr);
+ case ETHTOOL_SRXCSUM:
+ return ethtool_set_rx_csum(dev, useraddr);
+ case ETHTOOL_GTXCSUM:
+ return ethtool_get_tx_csum(dev, useraddr);
+ case ETHTOOL_STXCSUM:
+ return ethtool_set_tx_csum(dev, useraddr);
+ case ETHTOOL_GSG:
+ return ethtool_get_sg(dev, useraddr);
+ case ETHTOOL_SSG:
+ return ethtool_set_sg(dev, useraddr);
+ case ETHTOOL_GTSO:
+ return ethtool_get_tso(dev, useraddr);
+ case ETHTOOL_STSO:
+ return ethtool_set_tso(dev, useraddr);
+ case ETHTOOL_TEST:
+ return ethtool_self_test(dev, useraddr);
+ case ETHTOOL_GSTRINGS:
+ return ethtool_get_strings(dev, useraddr);
+ case ETHTOOL_PHYS_ID:
+ return ethtool_phys_id(dev, useraddr);
+ case ETHTOOL_GSTATS:
+ return ethtool_get_stats(dev, useraddr);
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return -EOPNOTSUPP;
+}
+#endif /* ETHTOOL_OPS_COMPAT */
+
+static int rtase_siocdevprivate(struct net_device *dev, struct ifreq *ifr, void __user *data,
+ int cmd)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ int ret = 0;
+
+ (void)data;
+
+ if ((tp->ptm_support == 0u) && (cmd == SIO_PRIV_RTK_PTM)) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ switch (cmd) {
+ case SIO_PRIV_RTK_REG:
+ ret = reg_fun(ifr, tp);
+ break;
+ case SIO_PRIV_RTK_RXQOS:
+ ret = rtase_rxqos(ifr, tp);
+ break;
+ case SIO_TIMEOUT_SIG_SET:
+ ret = timeout_sig(ifr, tp);
+ break;
+ case SIO_PRIV_RTK_PTM:
+ ret = rtase_ptm(ifr, tp);
+ break;
+ case SIO_PRIV_RTK_INFO:
+ ret = rtase_debug_msg(ifr, tp);
+ break;
+
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+out:
+ return ret;
+}
+
+static int rtase_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ int ret = 0;
+
+ (void)ifr;
+
+ if ((tp->ptm_support == 0u) && (cmd == SIO_PRIV_RTK_PTM)) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ switch (cmd) {
+#ifdef ETHTOOL_OPS_COMPAT
+ case SIOCETHTOOL:
+ ret = ethtool_ioctl(ifr);
+ break;
+#endif
+
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+out:
+ return ret;
+}
+
+static s32 rtase_alloc_msix(struct pci_dev *pdev, struct rtase_private *tp)
+{
+ u16 i = 0;
+ s32 rc = 0;
+
+ memset(tp->msix_entry, 0x0, NUM_MSIX * sizeof(struct msix_entry));
+ for (i = 0u; i < NUM_MSIX; i++)
+ tp->msix_entry[i].entry = (u16)i;
+
+ rc = pci_enable_msix_range(pdev, tp->msix_entry, (s32)tp->int_nums, (s32)tp->int_nums);
+
+ if ((u16)rc == tp->int_nums) {
+ for (i = 0u; i < tp->int_nums; i++) {
+ tp->int_vector[i].irq = (u32)(pci_irq_vector(pdev, (u32)i));
+ tp->int_vector[i].status = 1;
+ }
+ }
+
+ return rc;
+}
+
+static s32 rtase_alloc_interrupt(struct pci_dev *pdev, struct rtase_private *tp)
+{
+ s32 rc = 0;
+
+ rc = rtase_alloc_msix(pdev, tp);
+ if ((u16)rc != tp->int_nums) {
+ rc = pci_enable_msi(pdev);
+ if (rc != 0)
+ dev_err(&pdev->dev, "unable to alloc interrupt.(MSI)\n");
+ else
+ tp->sw_flag |= (u32)SWF_MSI_ENABLED;
+ } else {
+ tp->sw_flag |= (u32)SWF_MSIX_ENABLED;
+ }
+
+ return rc;
+}
+
+static void rtase_reset_interrupt(struct pci_dev *pdev, const struct rtase_private *tp)
+{
+ if ((tp->sw_flag & SWF_MSIX_ENABLED) != 0u)
+ pci_disable_msix(pdev);
+ else if ((tp->sw_flag & SWF_MSI_ENABLED) != 0u)
+ pci_disable_msi(pdev);
+ else
+ netdev_info(tp->dev, "interrupt is never enabled\n");
+}
+
+/* rtase_init_board -
+ * @pdev: PCI device struct
+ * @dev_out:
+ * @ioaddr_out:
+ *
+ * Return 0 on success, negative on failure
+ */
+static int rtase_init_board(struct pci_dev *pdev, struct net_device **dev_out,
+ void __iomem **ioaddr_out)
+{
+ void __iomem *ioaddr;
+ struct net_device *dev;
+ struct rtase_private *tp;
+ int rc = -ENOMEM;
+
+ assert(ioaddr_out);
+
+ /* dev zeroed in alloc_etherdev */
+ dev = alloc_etherdev_mq((s32)(sizeof(struct rtase_private)), func_txq_num);
+ if (!dev) {
+ if (netif_msg_drv(&debug) != 0u)
+ dev_err(&pdev->dev, "unable to alloc new ethernet\n");
+
+ goto err_out;
+ }
+
+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ tp = netdev_priv(dev);
+ tp->dev = dev;
+ tp->msg_enable = netif_msg_init((s32)debug.msg_enable, (s32)RTASE_MSG_DEFAULT);
+
+ /* enable device (incl. PCI PM wakeup and hotplug setup) */
+ rc = pci_enable_device(pdev);
+ if (rc < 0) {
+ if (netif_msg_probe(tp) != 0u)
+ dev_err(&pdev->dev, "enable failure\n");
+
+ goto err_out_free_dev;
+ }
+
+ /* make sure PCI base addr 1 is MMIO */
+ if ((pci_resource_flags(pdev, 2) & (u64)IORESOURCE_MEM) == 0u) {
+ if (netif_msg_probe(tp) != 0u)
+ dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
+
+ rc = -ENODEV;
+ goto err_out_disable;
+ }
+
+ /* check for weird/broken PCI region reporting */
+ if (pci_resource_len(pdev, 2) < RTASE_REGS_SIZE) {
+ if (netif_msg_probe(tp) != 0u)
+ dev_err(&pdev->dev, "Invalid PCI region size(s), aborting\n");
+
+ rc = -ENODEV;
+ goto err_out_disable;
+ }
+
+ rc = pci_request_regions(pdev, MODULENAME);
+ if (rc < 0) {
+ if (netif_msg_probe(tp) != 0u)
+ dev_err(&pdev->dev, "could not request regions.\n");
+
+ goto err_out_disable;
+ }
+
+ if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) == 0)
+ dev->features |= NETIF_F_HIGHDMA;
+ else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)) != 0)
+ goto err_out_free_res;
+ else
+ pr_info("DMA_BIT_MASK: 32\n");
+
+ pci_set_master(pdev);
+
+ /* ioremap MMIO region */
+ ioaddr = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
+ if (!ioaddr) {
+ if (netif_msg_probe(tp) != 0u)
+ dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
+
+ rc = -EIO;
+ goto err_out_free_res;
+ }
+
+ /* Identify chip attached to board */
+ rtase_get_mac_version(tp, ioaddr);
+ rtase_print_mac_version(tp);
+
+ *ioaddr_out = ioaddr;
+ *dev_out = dev;
+ goto out;
+
+err_out_free_res:
+ pci_release_regions(pdev);
+
+err_out_disable:
+ pci_disable_device(pdev);
+
+err_out_free_dev:
+ free_netdev(dev);
+
+err_out:
+ *ioaddr_out = NULL;
+ *dev_out = NULL;
+
+out:
+ return rc;
+}
+
+static const struct net_device_ops rtase_netdev_ops = {
+ .ndo_open = rtase_open,
+ .ndo_stop = rtase_close,
+ .ndo_start_xmit = rtase_start_xmit,
+ .ndo_set_rx_mode = rtase_set_rx_mode,
+ .ndo_set_mac_address = rtase_set_mac_address,
+ .ndo_siocdevprivate = rtase_siocdevprivate,
+ .ndo_eth_ioctl = rtase_do_ioctl,
+ .ndo_change_mtu = rtase_change_mtu,
+ .ndo_tx_timeout = rtase_tx_timeout,
+ .ndo_get_stats64 = rtase_get_stats64,
+ .ndo_vlan_rx_add_vid = rtase_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = rtase_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = rtase_netpoll,
+#endif
+#ifdef IFLA_VF_MAX
+ .ndo_set_vf_mac = rtase_set_vf_mac,
+ .ndo_get_vf_config = rtase_get_vf_config,
+#endif /* IFLA_VF_MAX */
+ .ndo_setup_tc = rtase_setup_tc,
+ .ndo_fix_features = rtase_fix_features,
+ .ndo_set_features = rtase_set_features,
+};
+
+static void rtase_init_netdev_ops(struct net_device *dev)
+{
+ dev->netdev_ops = &rtase_netdev_ops;
+
+ SET_ETHTOOL_OPS(dev, &rtase_ethtool_ops);
+}
+
+/* rtase_init_one - PCI Device Initialization
+ * @pdev: PCI device struct
+ * @ent: entry in rtlxxx_pci_tbl
+ *
+ * Return 0 on success, negative on failure
+ */
+static int rtase_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct net_device *dev = NULL;
+ struct rtase_private *tp;
+ void __iomem *ioaddr = NULL;
+ int rc;
+
+ (void)ent;
+ assert(pdev);
+ assert(ent);
+
+ if ((pdev->is_physfn == 0u) && (pdev->is_virtfn != 0u)) {
+ pr_info("%s This module does not support a virtual function.", MODULENAME);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if (netif_msg_drv(&debug) != 0u)
+ pr_info("%s Automotive Switch Ethernet driver %s loaded\n", MODULENAME,
+ RTASE_VERSION);
+
+ rc = rtase_init_board(pdev, &dev, &ioaddr);
+ if (rc != 0)
+ goto out;
+
+ tp = netdev_priv(dev);
+ assert(ioaddr);
+ tp->mmio_addr = ioaddr;
+ tp->pdev = pdev;
+ dev->tstats = devm_netdev_alloc_pcpu_stats(&pdev->dev, struct pcpu_sw_netstats);
+ if (!dev->tstats)
+ goto err_out_1;
+
+ rtase_init_software_variable(dev);
+ rtase_init_hardware(tp);
+
+ rc = rtase_alloc_interrupt(pdev, tp);
+ if (rc < 0)
+ pr_err("unable to alloc MSIX/MSI\n");
+
+ rtase_init_netdev_ops(dev);
+
+ dev->watchdog_timeo = RTASE_TX_TIMEOUT;
+ dev->irq = (s32)pdev->irq;
+ dev->base_addr = (unsigned long)ioaddr;
+
+ dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+#ifdef RTL_HW_VLAN_FILTER
+ dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+#endif
+
+ if (tp->mcfg != CFG_METHOD_DEFAULT) {
+ dev->features |= NETIF_F_IP_CSUM;
+ dev->features |= NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO;
+ dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO | NETIF_F_RXCSUM
+ | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO | NETIF_F_HIGHDMA;
+ dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
+ dev->hw_features |= NETIF_F_RXALL;
+ dev->hw_features |= NETIF_F_RXFCS;
+ dev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
+ dev->features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
+ netif_set_tso_max_size(dev, LSO_64K);
+ netif_set_tso_max_segs(dev, NIC_MAX_PHYS_BUF_COUNT_LSO2);
+ }
+
+ if (rtase_get_mac_address(dev) != 0)
+ pr_alert("unable to get mac address\n");
+
+ tp->tally_vaddr = dma_alloc_coherent(&pdev->dev, sizeof(*tp->tally_vaddr), &tp->tally_paddr,
+ GFP_KERNEL);
+ if (!tp->tally_vaddr) {
+ rc = -ENOMEM;
+ goto err_out;
+ }
+
+ rtase_tally_counter_clear(tp);
+
+ pci_set_drvdata(pdev, dev);
+
+ rc = register_netdev(dev);
+ if (rc != 0)
+ goto err_out;
+
+ pr_info("%s: This product is covered by one or more of the following patents: US6,570,884, US6,115,776, and US6,327,625.\n",
+ MODULENAME);
+
+ netif_carrier_off(dev);
+
+ pr_info("%s", GPL_CLAIM);
+ goto out;
+
+err_out:
+ if (tp->tally_vaddr) {
+ dma_free_coherent(&pdev->dev, sizeof(*tp->tally_vaddr), tp->tally_vaddr,
+ tp->tally_paddr);
+
+ tp->tally_vaddr = NULL;
+ }
+
+err_out_1:
+ rtase_release_board(pdev, dev, ioaddr);
+
+out:
+ return rc;
+}
+
+static void rtase_remove_one(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct rtase_private *tp = netdev_priv(dev);
+ struct rtase_int_vector *ivec;
+ u32 i = 0u;
+
+ assert(dev);
+ assert(tp);
+
+ for (i = 0u; i < tp->int_nums; i++) {
+ ivec = &tp->int_vector[i];
+ netif_napi_del(&ivec->napi);
+ }
+
+#ifdef CONFIG_SRIOV
+ if (tp->num_vfs != 0u) {
+ if (rtase_disable_sriov(tp) != 0)
+ pr_alert("unable to disable sriov\n");
+ }
+#endif
+
+ unregister_netdev(dev);
+ rtase_reset_interrupt(pdev, tp);
+#ifdef ENABLE_RTASE_PROCFS
+ rtase_proc_remove(dev);
+#endif
+ if (tp->tally_vaddr) {
+ dma_free_coherent(&pdev->dev, sizeof(*tp->tally_vaddr), tp->tally_vaddr,
+ tp->tally_paddr);
+ tp->tally_vaddr = NULL;
+ }
+
+ rtase_release_board(pdev, dev, tp->mmio_addr);
+ pci_set_drvdata(pdev, NULL);
+}
+
+static void rtase_set_rxbufsize(struct rtase_private *tp, const struct net_device *dev)
+{
+ u32 mtu = dev->mtu;
+
+ tp->rx_buf_sz = (mtu > (u32)ETH_DATA_LEN) ? (mtu + (u32)ETH_HLEN + 8u + 1u) : RX_BUF_SIZE;
+}
+
+static void rtase_free_desc(struct rtase_private *tp)
+{
+ struct pci_dev *pdev = tp->pdev;
+ u32 i = 0;
+
+ for (i = 0u; i < tp->func_tx_queue_num; i++) {
+ if (tp->tx_ring[i].desc) {
+ dma_free_coherent(&pdev->dev, RTASE_TX_RING_DESC_SIZE, tp->tx_ring[i].desc,
+ tp->tx_ring[i].phy_addr);
+ tp->tx_ring[i].desc = NULL;
+ }
+ }
+
+ for (i = 0u; i < tp->func_rx_queue_num; i++) {
+ if (tp->rx_ring[i].desc) {
+ dma_free_coherent(&pdev->dev, RTASE_RX_RING_DESC_SIZE, tp->rx_ring[i].desc,
+ tp->rx_ring[i].phy_addr);
+ tp->rx_ring[i].desc = NULL;
+ }
+ }
+}
+
+static s32 rtase_alloc_desc(struct rtase_private *tp)
+{
+ struct pci_dev *pdev = tp->pdev;
+ u32 i = 0;
+ s32 retval = 0;
+
+ /* allocate tx descriptor rings */
+ for (i = 0u; i < tp->func_tx_queue_num; i++) {
+ tp->tx_ring[i].desc = dma_alloc_coherent(&pdev->dev, RTASE_TX_RING_DESC_SIZE,
+ &tp->tx_ring[i].phy_addr, GFP_KERNEL);
+ if (!tp->tx_ring[i].desc) {
+ retval = -ENOMEM;
+ break;
+ }
+ }
+
+ if (retval == 0) {
+ /* allocate rx descriptor rings */
+ for (i = 0u; i < tp->func_rx_queue_num; i++) {
+ tp->rx_ring[i].desc =
+ dma_alloc_coherent(&pdev->dev, RTASE_RX_RING_DESC_SIZE,
+ &tp->rx_ring[i].phy_addr, GFP_KERNEL);
+ if (!tp->rx_ring[i].desc) {
+ retval = -ENOMEM;
+ break;
+ }
+ }
+ }
+
+ return retval;
+}
+
+static int rtase_open(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ const struct pci_dev *pdev = tp->pdev;
+ struct rtase_int_vector *ivec = &tp->int_vector[0];
+ int retval;
+ u16 i;
+
+#ifdef ENABLE_RTASE_PROCFS
+ rtase_proc_init(dev);
+#endif
+ rtase_set_rxbufsize(tp, dev);
+
+ retval = rtase_alloc_desc(tp);
+ if (retval < 0)
+ goto err_free_all_allocated_mem;
+
+ retval = rtase_init_ring(dev);
+ if (retval < 0)
+ goto err_free_all_allocated_mem;
+
+ if (netif_msg_probe(tp) != 0u) {
+ netdev_info(dev, "%s: 0x%lx, %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, IRQ %d\n",
+ dev->name, dev->base_addr, dev->dev_addr[0], dev->dev_addr[1],
+ dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5],
+ dev->irq);
+ }
+
+ INIT_DELAYED_WORK(&tp->task, NULL);
+
+ rtase_hw_config(dev);
+
+ if ((tp->sw_flag & SWF_MSIX_ENABLED) != 0u) {
+ retval = request_irq(ivec->irq, rtase_interrupt, 0, dev->name, dev);
+
+ /* request other interrupts to handle multiqueue */
+ for (i = 1; i < tp->int_nums; i++) {
+ if (retval == 0) {
+ ivec = &tp->int_vector[i];
+ if (ivec->status == 1u) {
+ sprintf((char *)&ivec->name, "%s_int%i", dev->name, i);
+ retval = request_irq(ivec->irq, rtase_q_interrupt, 0,
+ (char *)&ivec->name, ivec);
+ }
+ }
+ }
+ } else if ((tp->sw_flag & SWF_MSI_ENABLED) != 0u) {
+ retval = request_irq(pdev->irq, rtase_interrupt, 0, dev->name, dev);
+ } else {
+ retval = request_irq(pdev->irq, rtase_interrupt, SA_SHIRQ, dev->name, dev);
+ }
+
+ if (retval != 0) {
+ netdev_err(dev, "%s: can't request MSIX interrupt. Error: %d", dev->name, retval);
+ goto err_free_all_allocated_mem;
+ }
+
+ /* always link, so start to transmit & receive */
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ rtase_func_enable(tp);
+ rtase_enable_hw_interrupt(tp);
+ } else {
+ rtase_hw_start(dev);
+ }
+ netif_carrier_on(dev);
+ netif_wake_queue(dev);
+ if (netif_msg_ifup(tp) != 0u)
+ netdev_info(dev, PFX "%s: link up\n", dev->name);
+
+ goto out;
+
+err_free_all_allocated_mem:
+ rtase_free_desc(tp);
+
+out:
+ return retval;
+}
+
+static void rtase_set_mar(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 mc_filter[2];
+
+ mc_filter[0] = tp->mc_filter[0];
+ mc_filter[1] = tp->mc_filter[1];
+
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ u8 i = 0u;
+
+ for (i = 0u; i < tp->num_vfs; i++) {
+ mc_filter[0] |= tp->vf_info[i].mc_filter[0];
+ mc_filter[1] |= tp->vf_info[i].mc_filter[1];
+ }
+ }
+
+ RTL_W32(MAR0, mc_filter[0]);
+ RTL_W32(MAR1, mc_filter[1]);
+}
+
+void rtase_hw_set_rx_packet_filter(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ static const s32 multicast_filter_limit = 32;
+ u32 mc_filter[2]; /* Multicast hash filter */
+ u16 rx_mode = (u16)(RTL_R16(RX_CONFIG_0) & ~ACCEPT_MASK);
+
+ if ((dev->flags & IFF_PROMISC) != 0u) {
+ /* Unconditionally log net taps. */
+ if (netif_msg_link(tp) != 0u)
+ netdev_notice(dev, "%s: Promiscuous mode enabled.\n", dev->name);
+
+ rx_mode |=
+ (u16)(ACCEPT_BROADCAST | ACCEPT_MULTICAST | ACCEPT_MYPHYS | ACCEPT_ALLPHYS);
+ mc_filter[0] = 0xFFFFFFFFu;
+ mc_filter[1] = 0xFFFFFFFFu;
+ } else if ((netdev_mc_count(dev) > multicast_filter_limit)
+ || ((dev->flags & IFF_ALLMULTI) != 0u)) {
+ /* Too many to filter perfectly -- accept all multicasts. */
+ rx_mode |= (u16)(ACCEPT_BROADCAST | ACCEPT_MULTICAST | ACCEPT_MYPHYS);
+ mc_filter[0] = 0xFFFFFFFFu;
+ mc_filter[1] = 0xFFFFFFFFu;
+ } else {
+ const struct netdev_hw_addr *ha;
+
+ rx_mode |= (u16)(ACCEPT_BROADCAST | ACCEPT_MYPHYS);
+ mc_filter[0] = 0u;
+ mc_filter[1] = 0u;
+
+ /* clang-format off */
+ netdev_for_each_mc_addr(ha, dev) {
+ u32 bit_nr = (ether_crc(ETH_ALEN, ha->addr) >> 26);
+
+ mc_filter[bit_nr >> 5] |= ((u32)1u << (bit_nr & 31u));
+ rx_mode |= (u16)ACCEPT_MULTICAST;
+ }
+ /* clang-format on */
+ }
+
+ if ((dev->features & NETIF_F_RXALL) != 0u)
+ rx_mode |= (u16)(ACCEPT_ERR | ACCEPT_RUNT);
+
+ tp->mc_filter[0] = swab32(mc_filter[1]);
+ tp->mc_filter[1] = swab32(mc_filter[0]);
+
+ rtase_set_mar(tp);
+ RTL_W16(RX_CONFIG_0, rx_mode);
+}
+
+static void rtase_set_rx_mode(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ rtase_hw_set_rx_packet_filter(dev);
+
+ spin_unlock_irqrestore(&tp->lock, flags);
+}
+
+static void rtase_hw_config(struct net_device *dev)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 reg_data = 0;
+
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) == 0u)
+ rtase_hw_reset(dev);
+
+ /* Set Rx DMA burst */
+ reg_data = RTL_R16(RX_CONFIG_0);
+ reg_data &= (u32)(~(RX_SINGLE_TAG | RX_SINGLE_FETCH));
+ reg_data &= ~((u32)RX_MX_DMA_MASK << RX_MX_DMA_SHIFT);
+ reg_data |= ((u32)RX_DMA_BURST_256 << RX_MX_DMA_SHIFT);
+ RTL_W16(RX_CONFIG_0, (u16)reg_data);
+
+ /* New Rx Descritpor */
+ reg_data = RTL_R16(RX_CONFIG_1);
+ reg_data |= (u32)RX_NEW_DESC_FORMAT_EN;
+ reg_data |= (u32)PCIE_NEW_FLOW;
+ /* Rx Fetch Desc Number */
+ reg_data &= ~((u32)RX_MAX_FETCH_DESC_MASK << RX_MAX_FETCH_DESC_SHIFT);
+ reg_data |= ((u32)0xF << RX_MAX_FETCH_DESC_SHIFT);
+ RTL_W16(RX_CONFIG_1, (u16)reg_data);
+
+ /* Rx queue numbers */
+ reg_data = RTL_R16(FCR);
+ reg_data &= ~(FCR_RXQ_MASK << FCR_RXQ_SHIFT);
+ switch (tp->func_rx_queue_num) {
+ case 1:
+ reg_data |= (0x1u << FCR_RXQ_SHIFT);
+ break;
+ case 2:
+ reg_data |= (0x2u << FCR_RXQ_SHIFT);
+ break;
+ case 4:
+ reg_data |= (0x3u << FCR_RXQ_SHIFT);
+ break;
+ default:
+ /* nothing to do. */
+ break;
+ }
+ RTL_W16(FCR, (u16)reg_data);
+
+ /* interrupt mitigation */
+ rtase_interrupt_mitigation(tp);
+
+ /* Set Tx DMA burst size and Interframe Gap Time */
+ reg_data = RTL_R32(TX_CONFIG_0);
+ reg_data &= ~(((u32)TX_DMA_MASK << TX_DMA_SHIFT)
+ | ((u32)TX_INTER_FRAME_GAP_MASK << TX_INTER_FRAME_GAP_SHIFT));
+ reg_data |= (((u32)TX_DMA_BURST_UNLIMITED << TX_DMA_SHIFT)
+ | ((u32)INTERFRAMEGAP << TX_INTER_FRAME_GAP_SHIFT));
+ RTL_W32(TX_CONFIG_0, reg_data);
+
+ /* New Tx Descriptor */
+ RTL_W16(TFUN_CTRL, (u16)(RTL_R16(TFUN_CTRL) | TX_NEW_DESC_FORMAT_EN));
+
+ /* Tx Fetch Desc Number */
+ RTL_W8(TDFNR, 0x10);
+
+ /* tag num select */
+ reg_data = RTL_R16(MTPS);
+ reg_data &= ~((u32)0x7u << 8);
+ reg_data |= ((u32)0x4u << 8);
+ RTL_W16(MTPS, (u16)reg_data);
+
+ /* Tx queue numbers */
+ reg_data = RTL_R16(TX_CONFIG_1);
+ reg_data &= ~((u32)0x3u << 10);
+ switch (tp->tx_queue_ctrl) {
+ case 1:
+ break;
+ case 2:
+ reg_data |= ((u32)0x1u << 10);
+ break;
+ case 3:
+ case 4:
+ reg_data |= ((u32)0x2u << 10);
+ break;
+ default:
+ reg_data |= ((u32)0x3u << 10);
+ break;
+ }
+ RTL_W16(TX_CONFIG_1, (u16)reg_data);
+
+ /* TOK condition */
+ RTL_W16(TOKSEL, 0x5555);
+
+ rtase_tally_counter_addr_fill(tp);
+ rtase_desc_addr_fill(tp);
+
+ if (rtase_hw_set_features(dev, dev->features) != 0)
+ netdev_alert(dev, "unable to set hw features\n");
+
+ /* TBD: enable flow control */
+ reg_data = RTL_R16(CPLUS_CMD);
+ reg_data |= (u32)(FORCE_TXFLOW_EN | FORCE_RXFLOW_EN);
+ RTL_W16(CPLUS_CMD, (u16)reg_data);
+ /* Set Near FIFO Threshold - rx missed issue. */
+ RTL_W16(RFIFONFULL, 0x190);
+
+ RTL_W16(RMS, (u16)tp->rx_buf_sz);
+
+ /* Set Rx packet filter */
+ rtase_hw_set_rx_packet_filter(dev);
+
+ /* enable ephy interrupt */
+ mac_ocp_write(tp, 0xEAD0, 0xFF07);
+}
+
+void rtase_hw_start(const struct net_device *dev)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ /* set watchdog time */
+ RTL_W32(TIMEOUT0_ADDR, TIMEOUT_SET_TIME);
+ /* reset timer */
+ RTL_W32(TCTR0, 0x0);
+
+ rtase_nic_enable(dev);
+ rtase_enable_hw_interrupt(tp);
+}
+
+static int rtase_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ int ret = 0;
+ unsigned long flags;
+
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ ret = -EPERM;
+ goto err_out;
+ }
+
+ spin_lock_irqsave(&tp->lock, flags);
+ dev->mtu = (u32)new_mtu;
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ if (!netif_running(dev))
+ goto out;
+
+ rtase_down(dev);
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ rtase_set_rxbufsize(tp, dev);
+
+ ret = rtase_init_ring(dev);
+
+ if (ret < 0) {
+ spin_unlock_irqrestore(&tp->lock, flags);
+ goto err_out;
+ }
+
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
+ rtase_hw_config(dev);
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ /* always link, so start to transmit & receive */
+ rtase_hw_start(dev);
+ netif_carrier_on(dev);
+ netif_wake_queue(dev);
+
+out:
+ netdev_update_features(dev);
+
+err_out:
+ return ret;
+}
+
+static inline void rtase_make_unusable_by_asic(rx_desc *desc)
+{
+ desc->desc_cmd.addr = 0x0BADBADBADBADBADuLL;
+ desc->desc_cmd.opts1 &= ~cpu_to_le32(DESC_OWN | RSVD_MASK);
+}
+
+static inline void rtase_mark_to_asic(rx_desc *desc, u32 rx_buf_sz)
+{
+ u32 eor = (u32)(le32_to_cpu(desc->desc_cmd.opts1) & RING_END);
+
+ desc->desc_cmd.opts1 = cpu_to_le32(DESC_OWN | eor | rx_buf_sz);
+}
+
+static inline void rtase_map_to_asic(rx_desc *desc, dma_addr_t mapping, u32 rx_buf_sz)
+{
+ desc->desc_cmd.addr = cpu_to_le64(mapping);
+ /* make sure the physical address has been updated */
+ wmb();
+ rtase_mark_to_asic(desc, rx_buf_sz);
+}
+
+static s32 rtase_alloc_rx_skb(const struct rtase_ring *ring, struct sk_buff **p_sk_buff,
+ rx_desc *desc, dma_addr_t *rx_phy_addr, u32 rx_buf_sz, u8 in_intr)
+{
+ struct rtase_int_vector *ivec = ring->ivec;
+ const struct rtase_private *tp = ivec->tp;
+ struct sk_buff *skb = NULL;
+ dma_addr_t mapping;
+ s32 ret = 0;
+
+ if (in_intr != 0u)
+ skb = RTL_ALLOC_SKB_INTR(ivec->napi, (rx_buf_sz + RTK_RX_ALIGN));
+ else
+ skb = dev_alloc_skb((rx_buf_sz + RTK_RX_ALIGN));
+
+ if (unlikely(!skb))
+ goto err_out;
+
+ skb_reserve(skb, (s32)RTK_RX_ALIGN);
+
+ mapping = dma_map_single(&tp->pdev->dev, skb->data, rx_buf_sz, DMA_FROM_DEVICE);
+ if (unlikely(dma_mapping_error(&tp->pdev->dev, mapping))) {
+ if (unlikely(net_ratelimit()))
+ netif_err(tp, drv, tp->dev, "Failed to map RX DMA!\n");
+
+ goto err_out;
+ }
+
+ *p_sk_buff = skb;
+ *rx_phy_addr = mapping;
+ rtase_map_to_asic(desc, mapping, rx_buf_sz);
+ goto out;
+
+err_out:
+ if (skb)
+ dev_kfree_skb(skb);
+
+ ret = -ENOMEM;
+ rtase_make_unusable_by_asic(desc);
+
+out:
+ return ret;
+}
+
+static void rtase_rx_ring_clear(struct rtase_ring *ring)
+{
+ u32 i;
+ rx_desc *desc;
+ const struct rtase_private *tp = ring->ivec->tp;
+
+ for (i = 0u; i < NUM_DESC; i++) {
+ desc = ring->desc + (sizeof(rx_desc) * i);
+
+ if (ring->skbuff[i]) {
+ dma_unmap_single(&tp->pdev->dev, ring->mis.data_phy_addr[i], tp->rx_buf_sz,
+ DMA_FROM_DEVICE);
+
+ dev_kfree_skb(ring->skbuff[i]);
+
+ ring->skbuff[i] = NULL;
+
+ rtase_make_unusable_by_asic(desc);
+ }
+ }
+}
+
+void rtase_rx_clear(struct rtase_private *tp)
+{
+ u32 i;
+
+ for (i = 0u; i < tp->func_rx_queue_num; i++)
+ rtase_rx_ring_clear(&tp->rx_ring[i]);
+}
+
+static u32 rtase_rx_ring_fill(struct rtase_ring *ring, u32 ring_start, u32 ring_end, u8 in_intr)
+{
+ const struct rtase_private *tp = ring->ivec->tp;
+ u32 cur;
+
+ for (cur = ring_start; (ring_end - cur) > 0u; cur++) {
+ s32 ret = 0;
+ u32 i = cur % NUM_DESC;
+ rx_desc *desc = ring->desc + (sizeof(rx_desc) * i);
+
+ if (ring->skbuff[i])
+ continue;
+
+ ret = rtase_alloc_rx_skb(ring, &ring->skbuff[i], desc, &ring->mis.data_phy_addr[i],
+ tp->rx_buf_sz, in_intr);
+ if (ret < 0)
+ break;
+ }
+
+ return (cur - ring_start);
+}
+
+static inline void rtase_mark_as_last_descriptor(rx_desc *desc)
+{
+ desc->desc_cmd.opts1 |= cpu_to_le32(RING_END);
+}
+
+static void rtase_desc_addr_fill(const struct rtase_private *tp)
+{
+ u16 i = 0;
+ u16 cmd = 0;
+ const struct rtase_ring *ring;
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ for (i = 0u; i < tp->func_tx_queue_num; i++) {
+ ring = &tp->tx_ring[i];
+
+ RTL_W32(TX_DESC_START_ADDR0, (u32)(ring->phy_addr & DMA_BIT_MASK(32)));
+ RTL_W32(TX_DESC_START_ADDR4, (u32)(ring->phy_addr >> 32));
+ cmd = i | (u16)TX_DESC_CMD_WE | (u16)TX_DESC_CMD_CS;
+ RTL_W16(TX_DESC_COMMAND, cmd);
+ usleep_range(100, 110);
+ }
+
+ for (i = 0u; i < tp->func_rx_queue_num; i++) {
+ ring = &tp->rx_ring[i];
+
+ if (i == 0u) {
+ RTL_W32(Q0_RX_DESC_ADDR0, (u32)((ring->phy_addr & DMA_BIT_MASK(32))));
+ RTL_W32(Q0_RX_DESC_ADDR4, (u32)(ring->phy_addr >> 32));
+ } else {
+ RTL_W32((Q1_RX_DESC_ADDR0 + ((i - 1u) * 8u)),
+ (u32)(ring->phy_addr & DMA_BIT_MASK(32)));
+ RTL_W32((Q1_RX_DESC_ADDR4 + ((i - 1u) * 8u)), (u32)(ring->phy_addr >> 32));
+ }
+ }
+}
+
+static void rtase_tx_desc_init(struct rtase_private *tp, u16 idx)
+{
+ u32 i = 0;
+ struct rtase_ring *ring = &tp->tx_ring[idx];
+ tx_desc *desc;
+
+ memset(ring->desc, 0x0, RTASE_TX_RING_DESC_SIZE);
+ memset(ring->skbuff, 0x0, (NUM_DESC * sizeof(struct sk_buff *)));
+ ring->cur_idx = 0;
+ ring->dirty_idx = 0;
+ ring->priv_dirty_idx = 0;
+ ring->duplicate_dirty_count = 0;
+ ring->index = idx;
+
+ for (i = 0u; i < NUM_DESC; i++) {
+ ring->mis.len[i] = 0;
+ if ((NUM_DESC - 1u) == i) {
+ desc = ring->desc + (sizeof(tx_desc) * i);
+ desc->opts1 = cpu_to_le32(RING_END);
+ }
+ }
+
+ ring->ring_handler = tx_handler;
+ if (idx < 4u) {
+ ring->ivec = &tp->int_vector[idx];
+ list_add_tail(&ring->ring_entry, &tp->int_vector[idx].ring_list);
+ } else {
+ ring->ivec = &tp->int_vector[0];
+ list_add_tail(&ring->ring_entry, &tp->int_vector[0].ring_list);
+ }
+}
+
+static void rtase_rx_desc_init(struct rtase_private *tp, u16 idx)
+{
+ u16 i = 0;
+ struct rtase_ring *ring = &tp->rx_ring[idx];
+
+ memset(ring->desc, 0x0, RTASE_RX_RING_DESC_SIZE);
+ memset(ring->skbuff, 0x0, (NUM_DESC * sizeof(struct sk_buff *)));
+ ring->cur_idx = 0;
+ ring->dirty_idx = 0;
+ ring->index = idx;
+
+ for (i = 0u; i < NUM_DESC; i++)
+ ring->mis.data_phy_addr[i] = 0;
+
+ ring->ring_handler = rx_handler;
+ ring->ivec = &tp->int_vector[idx];
+ list_add_tail(&ring->ring_entry, &tp->int_vector[idx].ring_list);
+}
+
+s32 rtase_init_ring(const struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ u16 i = 0;
+ s32 rc = 0;
+
+ for (i = 0u; i < tp->func_tx_queue_num; i++)
+ rtase_tx_desc_init(tp, i);
+
+ for (i = 0u; i < tp->func_rx_queue_num; i++) {
+ rtase_rx_desc_init(tp, i);
+ if (rtase_rx_ring_fill(&tp->rx_ring[i], 0, NUM_DESC, 0) != NUM_DESC)
+ goto err_out;
+
+ rtase_mark_as_last_descriptor(tp->rx_ring[i].desc
+ + (sizeof(rx_desc) * (NUM_DESC - 1u)));
+ }
+
+ goto out;
+
+err_out:
+ rtase_rx_clear(tp);
+ rc = -ENOMEM;
+out:
+ return rc;
+}
+
+#define RTK_OPTS1_DEBUG_VALUE 0x0BADBEEF
+#define RTK_MAGIC_NUMBER 0x0BADBADBADBADBADuLL
+static void rtase_unmap_tx_skb(struct pci_dev *pdev, u32 len, tx_desc *desc)
+{
+ dma_unmap_single(&pdev->dev, le64_to_cpu(desc->addr), len, DMA_TO_DEVICE);
+ desc->opts1 = cpu_to_le32(RTK_OPTS1_DEBUG_VALUE);
+ desc->opts2 = 0x00;
+ desc->addr = RTK_MAGIC_NUMBER;
+}
+
+static void rtase_tx_clear_range(struct rtase_ring *ring, u32 start, u32 n)
+{
+ u32 i;
+ const struct rtase_private *tp = ring->ivec->tp;
+ struct net_device *dev = tp->dev;
+
+ for (i = 0u; i < n; i++) {
+ u32 entry = (start + i) % NUM_DESC;
+ u32 len = ring->mis.len[entry];
+
+ if (len != 0u) {
+ struct sk_buff *skb = ring->skbuff[entry];
+
+ rtase_unmap_tx_skb(tp->pdev, len, ring->desc + (sizeof(tx_desc) * entry));
+ ring->mis.len[entry] = 0;
+ if (skb) {
+ dev->stats.tx_dropped++;
+ dev_kfree_skb_any(skb);
+ ring->skbuff[entry] = NULL;
+ }
+ }
+ }
+}
+
+void rtase_tx_clear(struct rtase_private *tp)
+{
+ u16 i;
+ struct rtase_ring *ring;
+
+ for (i = 0u; i < tp->func_tx_queue_num; i++) {
+ ring = &tp->tx_ring[i];
+ rtase_tx_clear_range(ring, ring->dirty_idx, NUM_DESC);
+ ring->cur_idx = 0;
+ ring->dirty_idx = 0;
+ ring->priv_dirty_idx = 0;
+ ring->duplicate_dirty_count = 0;
+ }
+}
+
+static void rtase_wait_for_quiescence(const struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ struct rtase_int_vector *ivec;
+ u32 i;
+
+ for (i = 0; i < tp->int_nums; i++) {
+ ivec = &tp->int_vector[i];
+ synchronize_irq(ivec->irq);
+ /* Wait for any pending NAPI task to complete */
+ napi_disable(&ivec->napi);
+ }
+
+ rtase_irq_mask_and_ack(tp);
+
+ for (i = 0; i < tp->int_nums; i++) {
+ ivec = &tp->int_vector[i];
+ napi_enable(&ivec->napi);
+ }
+}
+
+static void dump_tx_desc(const struct rtase_ring *ring)
+{
+ const tx_desc *desc;
+ u16 i = 0u;
+
+ pr_info("%s:%d", __func__, __LINE__);
+ for (i = 0u; i < NUM_TX_DESC; i++) {
+ desc = ring->desc + (sizeof(tx_desc) * i);
+
+ pr_info("opts1 = 0x%x", desc->opts1);
+ pr_info("opts2 = 0x%x", desc->opts2);
+ pr_info("addr = 0x%llx", desc->addr);
+ }
+}
+
+static s32 rtase_debug_msg(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ const struct rtase_ring *ring;
+ void __iomem *ioaddr = tp->mmio_addr;
+ s32 n = 0;
+ s32 max_reg_size = RTASE_PCI_REGS_SIZE;
+ u32 dword_rd;
+ const struct rtase_counters *counters;
+ dma_addr_t paddr;
+ u32 cmd;
+ u32 wait_cnt;
+
+ pr_info("Driver Info:");
+ pr_info("int vector irq = %i", tp->int_vector[0].irq);
+
+ ring = &tp->tx_ring[0];
+ pr_info("Tx descriptor info:");
+ pr_info("Tx cur_idx = 0x%x", ring->cur_idx);
+ pr_info("Tx dirty_idx = 0x%x", ring->dirty_idx);
+ pr_info("Tx phy_addr = 0x%llx", ring->phy_addr);
+ dump_tx_desc(ring);
+
+ ring = &tp->rx_ring[0];
+ pr_info("Rx descriptor info:");
+ pr_info("Rx cur_idx = 0x%x", ring->cur_idx);
+ pr_info("Rx dirty_idx = 0x%x", ring->dirty_idx);
+ pr_info("Rx phy_addr = 0x%llx", ring->phy_addr);
+
+ pr_info("Device Registers:");
+ pr_info("Chip Command = 0x%02x", RTL_R8(CHIP_CMD));
+ pr_info("IMR = %08x", RTL_R32(IMR0));
+ pr_info("ISR = %08x", RTL_R32(ISR0));
+ pr_info("Boot Ctrl Reg(0xE004) = %04x", RTL_R16(0x6004));
+ pr_info("EPHY ISR(0xE014) = %04x", RTL_R16(0x6014));
+ pr_info("EPHY IMR(0xE016) = %04x", RTL_R16(0x6016));
+ pr_info("CLKSW SET REG(0xE018) = %04x", RTL_R16(0x6018));
+
+ pr_info("Dump PCI Registers:");
+
+ while (n < max_reg_size) {
+ if ((n % DWORD_MOD) == 0)
+ pr_info("\n0x%03x:\t", n);
+
+ pci_read_config_dword(tp->pdev, n, &dword_rd);
+ pr_info("%08x ", dword_rd);
+ n += 4;
+ }
+
+ pr_info("Dump Tally Counter:");
+ counters = tp->tally_vaddr;
+ paddr = tp->tally_paddr;
+ RTL_W32(DTCCR4, (u32)(paddr >> 32));
+ cmd = (u32)(paddr & DMA_BIT_MASK(32));
+ RTL_W32(DTCCR0, cmd);
+ RTL_W32(DTCCR0, (u32)(cmd | COUNTER_DUMP));
+ wait_cnt = 0;
+ while ((RTL_R32(DTCCR0) & COUNTER_DUMP) != 0u) {
+ usleep_range(10, 20);
+
+ wait_cnt++;
+ if (wait_cnt > 20u)
+ break;
+ }
+ pr_info("tx_packets\t%lld\n", le64_to_cpu(counters->tx_packets));
+ pr_info("rx_packets\t%lld\n", le64_to_cpu(counters->rx_packets));
+ pr_info("tx_errors\t%lld\n", le64_to_cpu(counters->tx_errors));
+ pr_info("rx_missed\t%lld\n", le64_to_cpu(counters->rx_missed));
+ pr_info("align_errors\t%lld\n", le64_to_cpu(counters->align_errors));
+ pr_info("tx_one_collision\t%lld\n", le64_to_cpu(counters->tx_one_collision));
+ pr_info("tx_multi_collision\t%lld\n", le64_to_cpu(counters->tx_multi_collision));
+ pr_info("rx_unicast\t%lld\n", le64_to_cpu(counters->rx_unicast));
+ pr_info("rx_broadcast\t%lld\n", le64_to_cpu(counters->rx_broadcast));
+ pr_info("rx_multicast\t%lld\n", le64_to_cpu(counters->rx_multicast));
+ pr_info("tx_aborted\t%lld\n", le64_to_cpu(counters->tx_aborted));
+ pr_info("tx_underun\t%lld\n", le64_to_cpu(counters->tx_underun));
+
+ return 0;
+}
+
+static void rtase_sw_reset(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ unsigned long flags;
+
+ netdev_info(dev, "%s is triggered.", __func__);
+ spin_lock_irqsave(&tp->lock, flags);
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ rtase_irq_mask_and_ack(tp);
+ rtase_func_disable(tp);
+ } else {
+ rtase_hw_reset(dev);
+ }
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ /* Let's wait a bit while any (async) irq lands on */
+ rtase_wait_for_quiescence(dev);
+ rtase_tx_clear(tp);
+ rtase_rx_clear(tp);
+
+ if (rtase_init_ring(dev) != 0)
+ netdev_alert(dev, "unable to init ring\n");
+
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ rtase_func_enable(tp);
+ rtase_enable_hw_interrupt(tp);
+ } else {
+ rtase_hw_config(dev);
+ /* always link, so start to transmit & receive */
+ rtase_hw_start(dev);
+ }
+ netif_carrier_on(dev);
+ netif_wake_queue(dev);
+
+ /* Set timeout_state */
+ tp->timeout_state = TIMEOUT_ERROR;
+}
+
+static void rtase_tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+ (void)txqueue;
+ rtase_sw_reset(dev);
+}
+
+static s32 rtase_xmit_frags(struct rtase_ring *ring, struct sk_buff *skb, u32 opts1, u32 opts2)
+{
+ const struct rtase_private *tp = ring->ivec->tp;
+ const struct skb_shared_info *info = skb_shinfo(skb);
+ u32 cur_frag, entry;
+ tx_desc *txd = NULL;
+ const u8 nr_frags = info->nr_frags;
+ u64 pkt_len_cnt = 0;
+ s32 rc = 0;
+
+ entry = ring->cur_idx;
+ for (cur_frag = 0; cur_frag < nr_frags; cur_frag++) {
+ const skb_frag_t *frag = &info->frags[cur_frag];
+ dma_addr_t mapping;
+ u32 status, len;
+ void *addr;
+
+ entry = (entry + 1u) % NUM_DESC;
+
+ txd = ring->desc + (sizeof(tx_desc) * entry);
+ len = skb_frag_size(frag);
+ addr = skb_frag_address(frag);
+ mapping = dma_map_single(&tp->pdev->dev, addr, len, DMA_TO_DEVICE);
+
+ if (unlikely(dma_mapping_error(&tp->pdev->dev, mapping))) {
+ if (unlikely(net_ratelimit()))
+ netif_err(tp, drv, tp->dev, "Failed to map TX fragments DMA!\n");
+
+ goto err_out;
+ }
+
+ if (((entry + 1u) % NUM_DESC) == 0u)
+ status = (opts1 | len | (u32)RING_END);
+ else
+ status = opts1 | len;
+
+ if (cur_frag == ((u32)nr_frags - 1u)) {
+ ring->skbuff[entry] = skb;
+ status |= (u32)TX_LAST_FRAG;
+ }
+
+ txd->addr = cpu_to_le64(mapping);
+ ring->mis.len[entry] = len;
+ txd->opts2 = cpu_to_le32(opts2);
+ /* make sure the operating fields have been updated */
+ wmb();
+ txd->opts1 = cpu_to_le32(status);
+ pkt_len_cnt += len;
+ }
+
+ rc = (s32)cur_frag;
+ goto out;
+
+err_out:
+ rtase_tx_clear_range(ring, ring->cur_idx + 1u, cur_frag);
+ rc = -EIO;
+out:
+ return rc;
+}
+
+static inline __be16 get_protocol(const struct sk_buff *skb)
+{
+ __be16 protocol;
+
+ if (skb->protocol == htons(ETH_P_8021Q))
+ protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
+ else
+ protocol = skb->protocol;
+
+ return protocol;
+}
+
+static inline u32 rtase_tx_csum(struct sk_buff *skb, const struct net_device *dev)
+{
+ u32 csum_cmd = 0;
+ u8 sw_calc_csum = FALSE;
+
+ if (skb->ip_summed == (u8)CHECKSUM_PARTIAL) {
+ u8 ip_protocol = IPPROTO_RAW;
+
+ switch (get_protocol(skb)) {
+ case htons(ETH_P_IP):
+ if ((dev->features & NETIF_F_IP_CSUM) != 0u) {
+ ip_protocol = ip_hdr(skb)->protocol;
+ csum_cmd = (u32)TX_IPCS_C;
+ }
+ break;
+ case htons(ETH_P_IPV6):
+ if ((dev->features & NETIF_F_IPV6_CSUM) != 0u) {
+ u32 transport_offset = (u32)skb_transport_offset(skb);
+
+ if ((transport_offset > 0u) && (transport_offset <= TCPHO_MAX)) {
+ ip_protocol = ipv6_hdr(skb)->nexthdr;
+ csum_cmd = (u32)TX_IPV6F_C;
+ csum_cmd |= transport_offset << TCPHO_SHIFT;
+ }
+ }
+ break;
+ default:
+ if (unlikely(net_ratelimit()))
+ dprintk("checksum_partial proto=%x!\n", skb->protocol);
+
+ break;
+ }
+
+ if (ip_protocol == (u8)IPPROTO_TCP)
+ csum_cmd |= (u32)TX_TCPCS_C;
+ else if (ip_protocol == (u8)IPPROTO_UDP)
+ csum_cmd |= (u32)TX_UDPCS_C;
+ else
+ netdev_info(dev, "%s command error.\n", __func__);
+
+ if (csum_cmd == 0u) {
+ sw_calc_csum = TRUE;
+ WARN_ON(1); /* we need a WARN() */
+ }
+ }
+
+ if (sw_calc_csum != 0u) {
+ skb_checksum_help(skb);
+ csum_cmd = 0;
+ }
+
+ return csum_cmd;
+}
+
+/* rtase_csum_workaround()
+ * The hw limites the value the transport offset. When the offset is out of the
+ * range, calculate the checksum by sw.
+ */
+static void rtase_csum_workaround(const struct rtase_private *tp, struct sk_buff *skb)
+{
+ struct net_device_stats *stats;
+
+ if (skb_shinfo(skb)->gso_size != 0u) {
+ netdev_features_t features = tp->dev->features;
+ struct sk_buff *segs = NULL;
+ struct sk_buff *nskb;
+
+ features &= ~(NETIF_F_SG | NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
+ segs = skb_gso_segment(skb, features);
+ if (IS_ERR(segs) || (!segs))
+ goto drop;
+
+ do {
+ nskb = segs;
+ segs = segs->next;
+ nskb->next = NULL;
+ rtase_start_xmit(nskb, tp->dev);
+ } while (segs);
+
+ dev_consume_skb_any(skb);
+ goto out;
+ } else if (skb->ip_summed == (u8)CHECKSUM_PARTIAL) {
+ if (skb_checksum_help(skb) < 0)
+ goto drop;
+
+ rtase_start_xmit(skb, tp->dev);
+ goto out;
+ } else {
+ goto drop;
+ }
+
+drop:
+ stats = &tp->dev->stats;
+ stats->tx_dropped++;
+ dev_kfree_skb_any(skb);
+
+out:
+ return;
+}
+
+/* msdn_giant_send_check()
+ * According to the document of microsoft, the TCP Pseudo Header excludes the
+ * packet length for IPv6 TCP large packets.
+ */
+static s32 msdn_giant_send_check(struct sk_buff *skb)
+{
+ const struct ipv6hdr *ipv6h;
+ struct tcphdr *th;
+ s32 ret;
+
+ ret = skb_cow_head(skb, 0);
+
+ if (ret == 0) {
+ ipv6h = ipv6_hdr(skb);
+ th = tcp_hdr(skb);
+
+ th->check = 0;
+ th->check = ~tcp_v6_check(0, &ipv6h->saddr, &ipv6h->daddr, 0);
+ }
+
+ return ret;
+}
+
+static netdev_tx_t rtase_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ struct rtase_ring *ring;
+ u32 q_idx;
+ u32 entry;
+ tx_desc *txd;
+ void __iomem *ioaddr = tp->mmio_addr;
+ dma_addr_t mapping;
+ u32 len;
+ u32 opts1;
+ u32 opts2;
+ netdev_tx_t ret = NETDEV_TX_OK;
+ unsigned long flags;
+ u64 large_send_en;
+ s32 frags;
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ /* multiqueues */
+ q_idx = skb_get_queue_mapping(skb);
+ ring = &tp->tx_ring[q_idx];
+
+ if (unlikely(TX_BUFFS_AVAIL(ring) < skb_shinfo(skb)->nr_frags)) {
+ if (netif_msg_drv(tp) != 0u)
+ netdev_err(dev, "%s: BUG! Tx Ring full when queue awake!\n", dev->name);
+
+ goto err_stop;
+ }
+
+ entry = ring->cur_idx % NUM_DESC;
+ txd = ring->desc + (sizeof(tx_desc) * entry);
+
+ if (unlikely(le32_to_cpu(txd->opts1) & DESC_OWN))
+ goto err_stop;
+
+ opts1 = (u32)DESC_OWN;
+ opts2 = rtase_tx_vlan_tag(tp, skb);
+ large_send_en = 0;
+
+ if ((dev->features & (NETIF_F_TSO | NETIF_F_TSO6)) != 0u) {
+ u32 mss = skb_shinfo(skb)->gso_size;
+
+ /* TCP Segmentation Offload (or TCP Large Send) */
+ if (mss != 0u) {
+ u32 transport_offset = (u32)skb_transport_offset(skb);
+
+ assert((transport_offset % 2) == 0);
+ switch (get_protocol(skb)) {
+ case htons(ETH_P_IP):
+ if (transport_offset <= 128u) {
+ opts1 |= (u32)GIANT_SEND_V4;
+ opts1 |= transport_offset << GTTCPHO_SHIFT;
+ opts2 |= min(mss, MSS_MAX) << 18;
+ large_send_en = 1;
+ }
+ break;
+ case htons(ETH_P_IPV6):
+ if (msdn_giant_send_check(skb) != 0) {
+ spin_unlock_irqrestore(&tp->lock, flags);
+ rtase_csum_workaround(tp, skb);
+ goto out;
+ }
+
+ if (transport_offset <= 128u) {
+ opts1 |= (u32)GIANT_SEND_V6;
+ opts1 |= transport_offset << GTTCPHO_SHIFT;
+ opts2 |= min(mss, MSS_MAX) << 18;
+ large_send_en = 1;
+ }
+ break;
+ default:
+ if (unlikely(net_ratelimit()))
+ dprintk("tso proto=%x!\n", skb->protocol);
+
+ break;
+ }
+
+ if (large_send_en == 0u)
+ goto err_dma_0;
+ }
+ }
+
+ if (large_send_en == 0u) {
+ if (skb->ip_summed == (u8)CHECKSUM_PARTIAL)
+ opts2 |= rtase_tx_csum(skb, dev);
+ }
+
+ frags = rtase_xmit_frags(ring, skb, opts1, opts2);
+ if (unlikely(frags < 0))
+ goto err_dma_0;
+
+ if (frags != 0) {
+ len = skb_headlen(skb);
+ opts1 |= (u32)TX_FIRST_FRAG;
+ } else {
+ len = skb->len;
+ ring->skbuff[entry] = skb;
+ opts1 |= (u32)(TX_FIRST_FRAG | TX_LAST_FRAG);
+ }
+
+ if ((((entry + 1u) % NUM_DESC) == 0u))
+ opts1 |= (len | (u32)RING_END);
+ else
+ opts1 |= len;
+
+ mapping = dma_map_single(&tp->pdev->dev, skb->data, len, DMA_TO_DEVICE);
+
+ if (unlikely(dma_mapping_error(&tp->pdev->dev, mapping))) {
+ if (unlikely(net_ratelimit()))
+ netif_err(tp, drv, dev, "Failed to map TX DMA!\n");
+
+ goto err_dma_1;
+ }
+
+ ring->mis.len[entry] = len;
+ txd->addr = cpu_to_le64(mapping);
+ txd->opts2 = cpu_to_le32(opts2);
+ txd->opts1 = cpu_to_le32(opts1 & ~DESC_OWN);
+ /* make sure the operating fields have been updated */
+ wmb();
+ txd->opts1 = cpu_to_le32(opts1);
+ skb_tx_timestamp(skb);
+
+ /* tx needs to see descriptor changes before updated cur_idx */
+ smp_wmb();
+ ring->cur_idx += (u32)frags + 1u;
+
+ /* make sure discriptor has been updated before hardware polling */
+ wmb();
+ /* set polling bit */
+ RTL_W8(TPPOLL, (u8)(BIT(ring->index)));
+
+ if (TX_BUFFS_AVAIL(ring) < MAX_SKB_FRAGS) {
+ netif_stop_queue(dev);
+ /* make sure cur_idx and dirty_idx have been updated */
+ smp_rmb();
+ if (TX_BUFFS_AVAIL(ring) >= MAX_SKB_FRAGS)
+ netif_wake_queue(dev);
+ }
+
+ spin_unlock_irqrestore(&tp->lock, flags);
+ goto out;
+
+err_dma_1:
+ ring->skbuff[entry] = NULL;
+ rtase_tx_clear_range(ring, ring->cur_idx + 1u, (u32)frags);
+
+err_dma_0:
+ dev->stats.tx_dropped++;
+ spin_unlock_irqrestore(&tp->lock, flags);
+ dev_kfree_skb_any(skb);
+ ret = NETDEV_TX_OK;
+ goto out;
+
+err_stop:
+ netif_stop_queue(dev);
+ ret = NETDEV_TX_BUSY;
+ dev->stats.tx_dropped++;
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+out:
+ return ret;
+}
+
+static s32 tx_handler(struct rtase_ring *ring, s32 budget)
+{
+ const struct rtase_private *tp = ring->ivec->tp;
+ struct net_device *dev = tp->dev;
+ u32 dirty_tx;
+ u32 tx_left;
+ void __iomem *ioaddr = tp->mmio_addr;
+ s32 workdone = 0;
+
+ dirty_tx = ring->dirty_idx;
+ /* make sure the index has been updated */
+ smp_rmb();
+ tx_left = ring->cur_idx - dirty_tx;
+
+ while (tx_left > 0u) {
+ u32 entry = dirty_tx % NUM_DESC;
+ tx_desc *desc = ring->desc + (sizeof(tx_desc) * entry);
+ u32 len = ring->mis.len[entry];
+ u32 status;
+
+ /* make sure discriptor has been updated */
+ rmb();
+ status = le32_to_cpu(desc->opts1);
+
+ if ((status & DESC_OWN) != 0u) {
+ tx_left = 0;
+ continue;
+ }
+
+ dev->stats.tx_bytes += len;
+ dev->stats.tx_packets++;
+ rtase_unmap_tx_skb(tp->pdev, len, desc);
+ ring->mis.len[entry] = 0;
+ if (ring->skbuff[entry]) {
+ dev_consume_skb_any(ring->skbuff[entry]);
+ ring->skbuff[entry] = NULL;
+ }
+ dirty_tx++;
+ tx_left--;
+ workdone++;
+
+ if (workdone == budget) {
+ tx_left = 0;
+ continue;
+ }
+ }
+
+ if (ring->dirty_idx != dirty_tx) {
+ ring->dirty_idx = dirty_tx;
+ /* make sure the index has been updated */
+ smp_wmb();
+
+ if (netif_queue_stopped(dev) && (TX_BUFFS_AVAIL(ring) >= MAX_SKB_FRAGS))
+ netif_wake_queue(dev);
+
+ /* make sure the index has been updated */
+ smp_rmb();
+ if (ring->cur_idx != dirty_tx)
+ RTL_W8(TPPOLL, (u8)(BIT(ring->index)));
+ }
+
+ return workdone;
+}
+
+static inline s32 rtase_fragmented_frame(u32 status)
+{
+ s32 ret;
+
+ if ((status & (RX_FIRST_FRAG | RX_LAST_FRAG)) != (RX_FIRST_FRAG | RX_LAST_FRAG))
+ ret = 1;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+static inline void rtase_rx_csum(const struct rtase_private *tp, struct sk_buff *skb,
+ const rx_desc *desc)
+{
+ u32 opts2 = le32_to_cpu(desc->desc_status.opts2);
+
+ (void)tp;
+
+ /* rx csum offload */
+ if ((((opts2 & RX_V4F) != 0u) && ((opts2 & RX_IPF) == 0u)) || ((opts2 & RX_V6F) != 0u)) {
+ if ((((opts2 & RX_TCPT) != 0u) && ((opts2 & RX_TCPF) == 0u))
+ || (((opts2 & RX_UDPT) != 0u) && ((opts2 & RX_UDPF) == 0u))) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else {
+ skb->ip_summed = CHECKSUM_NONE;
+ }
+ } else {
+ skb->ip_summed = CHECKSUM_NONE;
+ }
+}
+
+static inline s32 rtase_try_rx_copy(const struct rtase_ring *ring, struct sk_buff **p_sk_buff,
+ u32 pkt_size, rx_desc *desc, u32 rx_buf_sz)
+{
+ struct rtase_int_vector *ivec = ring->ivec;
+ s32 ret = -1;
+
+ if ((s32)pkt_size < rx_copybreak) {
+ struct sk_buff *skb;
+
+ skb = RTL_ALLOC_SKB_INTR(ivec->napi, ((u32)pkt_size + (u32)RTK_RX_ALIGN));
+ if (skb) {
+ const u8 *p_sk_buff_data;
+
+ p_sk_buff_data = p_sk_buff[0]->data;
+ skb_reserve(skb, (s32)RTK_RX_ALIGN);
+ prefetch(p_sk_buff_data - RTK_RX_ALIGN);
+ memcpy(skb->data, p_sk_buff_data, (u64)pkt_size);
+ *p_sk_buff = skb;
+ rtase_mark_to_asic(desc, rx_buf_sz);
+ ret = 0;
+ }
+ }
+ return ret;
+}
+
+static inline void rtase_rx_skb(const struct rtase_ring *ring, struct sk_buff *skb)
+{
+ struct rtase_int_vector *ivec = ring->ivec;
+
+ napi_gro_receive(&ivec->napi, skb);
+}
+
+static s32 rx_handler(struct rtase_ring *ring, s32 budget)
+{
+ const struct rtase_private *tp = ring->ivec->tp;
+ struct net_device *dev = tp->dev;
+ u32 cur_rx;
+ u32 delta;
+ u32 entry;
+ s32 workdone = 0;
+ rx_desc *desc;
+ u32 status;
+ struct sk_buff *skb;
+ u32 pkt_size;
+
+ if (!ring->desc)
+ goto rx_out;
+
+ cur_rx = ring->cur_idx;
+ entry = cur_rx % (u32)NUM_DESC;
+ desc = ring->desc + (sizeof(rx_desc) * entry);
+
+ do {
+ /* make sure discriptor has been updated */
+ rmb();
+ status = le32_to_cpu(desc->desc_status.opts1);
+
+ if ((status & DESC_OWN) != 0u)
+ break;
+
+ if (unlikely(status & RX_RES)) {
+ if (netif_msg_rx_err(tp) != 0u)
+ netdev_info(dev, "%s: Rx ERROR. status = %08x\n", dev->name,
+ status);
+
+ dev->stats.rx_errors++;
+
+ if ((status & (RX_RWT | RX_RUNT)) != 0u)
+ dev->stats.rx_length_errors++;
+
+ if ((status & RX_CRC) != 0u)
+ dev->stats.rx_crc_errors++;
+
+ if ((dev->features & NETIF_F_RXALL) != 0u)
+ goto process_pkt;
+
+ rtase_mark_to_asic(desc, tp->rx_buf_sz);
+ goto out;
+ }
+
+process_pkt:
+ if (likely((dev->features & NETIF_F_RXFCS) == 0u))
+ pkt_size = (status & 0x00003FFFu) - 4u;
+ else
+ pkt_size = (status & 0x00003FFFu);
+
+ /* The driver does not support incoming fragmented
+ * frames. They are seen as a symptom of over-mtu
+ * sized frames.
+ */
+ if (unlikely(rtase_fragmented_frame(status))) {
+ dev->stats.rx_dropped++;
+ dev->stats.rx_length_errors++;
+ rtase_mark_to_asic(desc, tp->rx_buf_sz);
+ continue;
+ }
+
+ skb = ring->skbuff[entry];
+ dma_sync_single_for_cpu(&tp->pdev->dev, ring->mis.data_phy_addr[entry],
+ tp->rx_buf_sz, DMA_FROM_DEVICE);
+
+ if (rtase_try_rx_copy(ring, &skb, pkt_size, desc, tp->rx_buf_sz) != 0) {
+ dma_unmap_single(&tp->pdev->dev, ring->mis.data_phy_addr[entry],
+ tp->rx_buf_sz, DMA_FROM_DEVICE);
+ ring->skbuff[entry] = NULL;
+ } else {
+ dma_sync_single_for_device(&tp->pdev->dev, ring->mis.data_phy_addr[entry],
+ tp->rx_buf_sz, DMA_FROM_DEVICE);
+ }
+
+ if ((dev->features & NETIF_F_RXCSUM) != 0u)
+ rtase_rx_csum(tp, skb, desc);
+
+ skb->dev = dev;
+ skb_put(skb, pkt_size);
+ skb->protocol = eth_type_trans(skb, dev);
+
+ if (skb->pkt_type == (u8)PACKET_MULTICAST)
+ dev->stats.multicast++;
+
+ if (rtase_rx_vlan_skb(desc, skb) < 0)
+ rtase_rx_skb(ring, skb);
+
+ dev->stats.rx_bytes += (u64)pkt_size;
+ dev->stats.rx_packets++;
+out:
+ workdone++;
+ cur_rx++;
+ entry = cur_rx % NUM_DESC;
+ desc = ring->desc + (sizeof(rx_desc) * entry);
+ prefetch(desc);
+
+ } while (workdone != budget);
+
+ ring->cur_idx = cur_rx;
+ delta = rtase_rx_ring_fill(ring, ring->dirty_idx, ring->cur_idx, 1);
+
+ if ((delta == 0u) && (workdone != 0) && netif_msg_intr(tp))
+ netdev_info(dev, "%s: no Rx buffer allocated\n", dev->name);
+
+ ring->dirty_idx += delta;
+
+ /* FIXME: until there is periodic timer to try and refill the ring,
+ * a temporary shortage may definitely kill the Rx process.
+ * - disable the asic to try and avoid an overflow and kick it again
+ * after refill ?
+ * - how do others driver handle this condition (Uh oh...).
+ */
+ if (((ring->dirty_idx + NUM_DESC) == ring->cur_idx) && netif_msg_intr(tp))
+ netdev_emerg(dev, "%s: Rx buffers exhausted\n", dev->name);
+
+rx_out:
+ return workdone;
+}
+
+/* The interrupt handler does RXQ0 and TXQ0, TXQ4~7 interrutp status.
+ */
+static irqreturn_t rtase_interrupt(int irq, void *dev_instance)
+{
+ struct net_device *dev = (struct net_device *)dev_instance;
+ struct rtase_private *tp = netdev_priv(dev);
+ struct rtase_int_vector *ivec = &tp->int_vector[0];
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 status;
+ s32 handled = 0;
+
+ (void)irq;
+
+ do {
+ status = RTL_R32(ivec->isr_addr);
+
+ if ((status & MBX) != 0u)
+ queue_work(work_queue, &tp->msg_work);
+
+ if ((status & TIMEOUT0) != 0u)
+ queue_work(work_queue, &tp->watchdog_work);
+
+#ifdef RTLDBG
+ if (status & RDU)
+ netdev_info(dev, "PF receive RDU !!!!!!!!!");
+
+#endif
+
+ handled = 1;
+ RTL_W32(ivec->imr_addr, 0x0);
+ RTL_W32(ivec->isr_addr, (u32)(status & ~FOVW));
+
+ status &= (u32)(~MBX);
+ if ((status & ivec->imr) != 0u) {
+ if (likely(RTL_NETIF_RX_SCHEDULE_PREP(dev, &ivec->napi)))
+ __RTL_NETIF_RX_SCHEDULE(dev, &ivec->napi);
+ else if (netif_msg_intr(tp) != 0u)
+ netdev_info(dev, "%s: interrupt %08x in poll\n", dev->name, status);
+
+ } else {
+ RTL_W32(ivec->imr_addr, (u32)(ivec->imr & ~MBX));
+ }
+
+ } while (false);
+
+ return IRQ_RETVAL(handled);
+}
+
+/* The interrupt handler does RXQ1&TXQ1 or RXQ2&TXQ2 or RXQ3&TXQ3 interrutp
+ * status according to interrupt vector.
+ */
+static irqreturn_t rtase_q_interrupt(int irq, void *dev_instance)
+{
+ struct rtase_int_vector *ivec = (struct rtase_int_vector *)dev_instance;
+ const struct rtase_private *tp = ivec->tp;
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 status;
+ int handled = 0;
+
+ (void)irq;
+
+ do {
+ status = RTL_R16(ivec->isr_addr);
+
+ handled = 1;
+ RTL_W16(ivec->imr_addr, 0x0);
+ RTL_W16(ivec->isr_addr, status);
+
+ /* don't support without NAPI */
+ if (likely(RTL_NETIF_RX_SCHEDULE_PREP(dev, &ivec->napi)))
+ __RTL_NETIF_RX_SCHEDULE(dev, &ivec->napi);
+ else
+ netdev_info(tp->dev, "%s: interrupt %04x in poll\n", ivec->name, status);
+
+ } while (false);
+
+ return IRQ_RETVAL(handled);
+}
+
+static int rtase_poll(struct napi_struct *napi, int budget)
+{
+ const struct rtase_int_vector *ivec = container_of(napi, struct rtase_int_vector, napi);
+ const struct rtase_private *tp = ivec->tp;
+ void __iomem *ioaddr = tp->mmio_addr;
+ struct rtase_ring *ring;
+ int total_workdone = 0;
+ s32 workdone = 0;
+ s32 clean_flag = 1;
+
+ /* clang-format off */
+ list_for_each_entry(ring, &ivec->ring_list, ring_entry) {
+ workdone = ring->ring_handler(ring, budget);
+ total_workdone += workdone;
+ if (workdone == budget)
+ clean_flag = 0;
+ }
+ /* clang-format on */
+
+ if (clean_flag != 0) {
+ total_workdone = min(total_workdone, budget - 1);
+ if (likely(napi_complete_done(napi, total_workdone))) {
+ if (ivec->index == 0u)
+ RTL_W32(ivec->imr_addr, ivec->imr);
+ else
+ RTL_W16(ivec->imr_addr, (u16)ivec->imr);
+ }
+ } else {
+ /* still need to poll */
+ total_workdone = budget;
+ }
+
+ return total_workdone;
+}
+
+static void rtase_down(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ unsigned long flags;
+ u32 i = 0u;
+
+ netif_stop_queue(dev);
+
+ /* Give a racing hard_start_xmit a few cycles to complete. */
+ synchronize_rcu();
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ netif_carrier_off(dev);
+
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ rtase_irq_mask_and_ack(tp);
+ rtase_func_disable(tp);
+ } else {
+ rtase_hw_reset(dev);
+ }
+
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+ for (i = 0u; i < tp->int_nums; i++)
+ synchronize_irq(tp->int_vector[i].irq);
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ rtase_tx_clear(tp);
+
+ rtase_rx_clear(tp);
+
+ spin_unlock_irqrestore(&tp->lock, flags);
+}
+
+static int rtase_close(struct net_device *dev)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ const struct pci_dev *pdev = tp->pdev;
+ u32 i = 0;
+
+ rtase_down(dev);
+
+ if ((tp->sw_flag & SWF_MSIX_ENABLED) != 0u) {
+ free_irq(tp->int_vector[i].irq, dev);
+ for (i = 1; i < tp->int_nums; i++)
+ free_irq(tp->int_vector[i].irq, &tp->int_vector[i]);
+
+ } else {
+ free_irq(pdev->irq, dev);
+ }
+
+ rtase_free_desc(tp);
+
+ return 0;
+}
+
+static void rtase_shutdown(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ const struct rtase_private *tp = netdev_priv(dev);
+
+ if (netif_running(dev)) {
+ if (rtase_close(dev) != 0)
+ netdev_alert(dev, "unable to close\n");
+ }
+ rtase_reset_interrupt(pdev, tp);
+}
+
+static void rtase_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
+{
+ const struct rtase_private *tp = netdev_priv(dev);
+ const struct rtase_counters *counters = tp->tally_vaddr;
+ dma_addr_t paddr = tp->tally_paddr;
+
+ if (counters) {
+ netdev_stats_to_stats64(stats, &dev->stats);
+ dev_fetch_sw_netstats(stats, dev->tstats);
+
+ /* Fetch additional counter values missing in stats collected by driver from tally
+ * counter
+ */
+ rtase_dump_tally_counter(tp, paddr);
+
+ stats->tx_errors = le64_to_cpu(counters->tx_errors);
+ stats->collisions = le64_to_cpu(counters->tx_multi_collision);
+ stats->tx_aborted_errors = le64_to_cpu(counters->tx_aborted);
+ stats->rx_missed_errors = le64_to_cpu(counters->rx_missed);
+ }
+}
+
+static void rtase_vlan_filter(const struct rtase_private *tp, u8 enabled)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 tmp = 0;
+
+ if (enabled == 1u) {
+ /* PFCR */
+ tmp = RTL_R16(FCR);
+ if ((tmp & FCR_VLAN_FTR_EN) == 0u)
+ RTL_W16(FCR, (u16)(tmp | FCR_VLAN_FTR_EN));
+
+ /* PCPR */
+ tmp = RTL_R16(PCPR);
+ if ((tmp & PCPR_VLAN_FTR_EN) == 0u)
+ RTL_W16(PCPR, (u16)(tmp | PCPR_VLAN_FTR_EN));
+
+ } else {
+ /* PFCR */
+ tmp = RTL_R16(FCR);
+ if ((tmp & FCR_VLAN_FTR_EN) != 0u)
+ RTL_W16(FCR, (u16)(tmp & ~FCR_VLAN_FTR_EN));
+
+ /* PCPR */
+ tmp = RTL_R16(PCPR);
+ if ((tmp & PCPR_VLAN_FTR_EN) == 0u)
+ RTL_W16(PCPR, (u16)(tmp & ~PCPR_VLAN_FTR_EN));
+ }
+}
+
+static int rtase_vlan_rx_add_vid(struct net_device *dev, __be16 protocol, u16 vid)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 i = 0u;
+ u16 tmp_mem = 0;
+ int ret = 0;
+
+ if (be16_to_cpu(protocol) != (u16)ETH_P_8021Q) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* vlan filter table */
+ for (i = 0u; i < VLAN_FILTER_ENTRY_NUM; i++) {
+ if ((tp->vlan_filter_ctrl & BIT(i)) == 0u) {
+ tp->vlan_filter_ctrl |= (u32)BIT(i);
+ tp->vlan_filter_vid[i] = vid;
+ RTL_W32((VLAN_ENTRY_0 + (i * 4u)), (vid | VLAN_ENTRY_CAREBIT));
+
+ tmp_mem = RTL_R16((VLAN_ENTRY_MEM_0 + ((i / 2u) * 2u)));
+ tmp_mem |= ((u16)0x1u << ((i % 2u) * 8u));
+ RTL_W16((VLAN_ENTRY_MEM_0 + ((i / 2u) * 2u)), tmp_mem);
+ break;
+ }
+ }
+
+ if (i == VLAN_FILTER_ENTRY_NUM) {
+ ret = -ENOMEM;
+ } else {
+ /* check vlan filter enabled */
+ rtase_vlan_filter(tp, 1u);
+ }
+
+out:
+ return ret;
+}
+
+static int rtase_vlan_rx_kill_vid(struct net_device *dev, __be16 protocol, u16 vid)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 i = 0u;
+ u16 tmp_mem = 0;
+ s32 rc = 0;
+
+ if (be16_to_cpu(protocol) != (u16)ETH_P_8021Q) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ /* vlan filter table */
+ for (i = 0u; i < VLAN_FILTER_ENTRY_NUM; i++) {
+ if (tp->vlan_filter_vid[i] == vid) {
+ tp->vlan_filter_ctrl &= (u32)(~BIT(i));
+ tp->vlan_filter_vid[i] = 0;
+ RTL_W32((VLAN_ENTRY_0 + (i * 4u)), 0);
+
+ tmp_mem = RTL_R16((VLAN_ENTRY_MEM_0 + ((i / 2u) * 2u)));
+ tmp_mem &= (~((u16)0x1u << ((i % 2u) * 8u)));
+ RTL_W16((VLAN_ENTRY_MEM_0 + ((i / 2u) * 2u)), tmp_mem);
+ break;
+ }
+ }
+
+ /* check vlan filter enabled */
+ if (tp->vlan_filter_ctrl == 0u) {
+ /* disable vlan filter */
+ rtase_vlan_filter(tp, 0u);
+ }
+
+out:
+ return rc;
+}
+
+static void rtase_set_hw_cbs(const struct rtase_private *tp, u32 queue)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 i = 0;
+ u32 idle = (u32)tp->tx_qos[queue].idleslope * RTASE_1T_CLOCK;
+ u32 regV = 0;
+
+ regV = idle / RTASE_1T_POWER;
+ regV <<= RTASE_IDLESLOPE_INT_SHIFT;
+ idle %= RTASE_1T_POWER;
+ for (i = 0; i < RTASE_IDLESLOPE_INT_SHIFT; i++) {
+ idle *= 2u;
+ if ((idle / RTASE_1T_POWER) == 1u)
+ regV |= ((u32)0x1u << (RTASE_IDLESLOPE_INT_SHIFT - i - 1u));
+
+ idle %= RTASE_1T_POWER;
+ }
+ RTL_W32((TXQCRDT_0 + (queue * 4u)), regV);
+}
+
+static int rtase_setup_tc_cbs(struct rtase_private *tp, const struct tc_cbs_qopt_offload *qopt)
+{
+ u32 queue = (u32)qopt->queue;
+
+ /* record settings */
+ tp->tx_qos[queue].hicredit = qopt->hicredit;
+ tp->tx_qos[queue].locredit = qopt->locredit;
+ tp->tx_qos[queue].idleslope = qopt->idleslope;
+ tp->tx_qos[queue].sendslope = qopt->sendslope;
+
+ /* set hardware cbs */
+ rtase_set_hw_cbs(tp, queue);
+
+ return 0;
+}
+
+static int rtase_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data)
+{
+ struct rtase_private *tp = netdev_priv(dev);
+ int ret = 0;
+
+ switch (type) {
+ case TC_SETUP_QDISC_MQPRIO:
+ break;
+ case TC_SETUP_BLOCK:
+ break;
+ case TC_SETUP_QDISC_CBS:
+ ret = rtase_setup_tc_cbs(tp, type_data);
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}
+
+#ifdef CONFIG_PM
+
+static int rtase_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct rtase_private *tp = netdev_priv(dev);
+ unsigned long flags;
+
+ (void)state;
+
+ if (!netif_running(dev))
+ goto out;
+
+ netif_stop_queue(dev);
+
+ netif_carrier_off(dev);
+
+ netif_device_detach(dev);
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ rtase_irq_mask_and_ack(tp);
+ rtase_func_disable(tp);
+ } else {
+ rtase_hw_reset(dev);
+ }
+
+ spin_unlock_irqrestore(&tp->lock, flags);
+
+out:
+ pci_save_state(pdev);
+
+ return 0;
+}
+
+static int rtase_resume(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct rtase_private *tp = netdev_priv(dev);
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ pci_enable_wake(pdev, PCI_D0, 0);
+
+ /* restore last modified mac address */
+ rtase_rar_set(tp, dev->dev_addr);
+
+ if (!netif_running(dev))
+ goto out;
+
+ rtase_wait_for_quiescence(dev);
+ netif_device_attach(dev);
+
+ rtase_tx_clear(tp);
+ rtase_rx_clear(tp);
+
+ if (rtase_init_ring(dev) != 0)
+ netdev_alert(dev, "unable to init ring\n");
+
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ rtase_func_enable(tp);
+ rtase_enable_hw_interrupt(tp);
+ } else {
+ rtase_hw_config(dev);
+ /* always link, so start to transmit & receive */
+ rtase_hw_start(dev);
+ }
+ netif_carrier_on(dev);
+ netif_wake_queue(dev);
+
+out:
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+static struct pci_driver rtase_pci_driver = {
+ .name = MODULENAME,
+ .id_table = rtase_pci_tbl,
+ .probe = rtase_init_one,
+ .remove = rtase_remove_one,
+ .shutdown = rtase_shutdown,
+#ifdef CONFIG_PM
+ .suspend = rtase_suspend,
+ .resume = rtase_resume,
+#endif
+#ifdef CONFIG_SRIOV
+ .sriov_configure = rtase_pci_sriov_configure,
+#endif
+};
+
+/* rtase switch control function
+ */
+#define SWC_DRIVER_NAME "rtase_swc"
+#define SWC_DRIVER_MAJOR 200
+#define SWC_CMD_REG_GET 70
+#define SWC_CMD_REG_SET 71
+#define SWC_CMD_TYPE_8 0
+#define SWC_CMD_TYPE_16 1
+#define SWC_CMD_TYPE_32 2
+#define SWC_PAGE_ADDR 0x8000
+#define SWC_PAGE_MASK 0xFFFF8000u
+#define SWC_ADDR_MASK 0x00007FFFu
+
+#ifdef SWC_DRIVER_DBG
+#define SWC_DRIVER_INFO(fmt, arg...) pr_info("%s:%d " fmt, __func__, __LINE__, ##arg)
+#else
+#define SWC_DRIVER_INFO(fmt, arg...)
+#endif
+
+struct rtase_swc_cmd_t {
+ u8 type;
+ u32 reg_addr;
+ u32 reg_value;
+};
+
+struct rtase_swc_dev_t {
+ struct cdev swc_cdev;
+ void __iomem *swc_ioaddr;
+ u16 init_flag;
+};
+
+static struct rtase_swc_dev_t rtase_swc_device;
+static struct pci_device_id rtase_swc_pci_table[] = {
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x906F),
+ },
+ {
+ 0,
+ },
+};
+
+static int rtase_swc_open(struct inode *p_inode, struct file *p_file)
+{
+ struct rtase_swc_dev_t *swc_dev =
+ container_of(p_inode->i_cdev, struct rtase_swc_dev_t, swc_cdev);
+
+ p_file->private_data = swc_dev;
+
+ return 0;
+}
+
+static int rtase_swc_release(struct inode *p_inode, struct file *p_file)
+{
+ (void)p_inode;
+ (void)p_file;
+
+ return 0;
+}
+
+static void rtase_swc_get_from_ptm(struct rtase_ptm_cmd_t *cmd)
+{
+ const void __iomem *ioaddr = rtase_swc_device.swc_ioaddr;
+ u32 addr = cmd->reg_addr & (u32)SWC_ADDR_MASK;
+
+ cmd->reg_value = RTL_R32(addr);
+}
+
+static s32 rtase_ptm_get_clock(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = rtase_swc_device.swc_ioaddr;
+ void *useraddr = (void *)ifr->ifr_data;
+ struct rtase_ptm_cmd_t cmd;
+ s32 i;
+ u32 page_addr;
+ u64 tmp = 0;
+ s32 ret = 0;
+
+ memset(&cmd, 0, sizeof(struct rtase_ptm_cmd_t));
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ page_addr = cmd.reg_addr & SWC_PAGE_MASK;
+ RTL_W32(SWC_PAGE_ADDR, page_addr);
+
+ cmd.ptp_second = 0;
+ cmd.ptp_nano_second = 0;
+
+ for (i = 0; i < 3; i++) {
+ rtase_swc_get_from_ptm(&cmd);
+ cmd.reg_addr += 4u;
+ if (i == 0) {
+ cmd.ptp_nano_second = cmd.reg_value;
+ } else {
+ tmp = ((u64)cmd.reg_value << (32u * ((u64)i - 1u)));
+ cmd.ptp_second += tmp;
+ }
+ }
+
+ ioaddr = tp->mmio_addr;
+ cmd.ptm_time = 0;
+
+ for (i = 1; i < 3; i++) {
+ cmd.ptm_time += ((u64)RTL_R32(cmd.ptm_addr) << (32u * ((u64)i - 1u)));
+ cmd.ptm_addr += 4u;
+ }
+
+ if (copy_to_user(useraddr, &cmd, sizeof(struct rtase_ptm_cmd_t)) != 0u)
+ ret = -EFAULT;
+
+out:
+ return ret;
+}
+
+static s32 rtase_ptm_swc_get(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = rtase_swc_device.swc_ioaddr;
+ void *useraddr = (void *)ifr->ifr_data;
+ struct rtase_ptm_cmd_t cmd;
+ u32 page_addr;
+ s32 ret = 0;
+
+ (void)tp;
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ page_addr = cmd.reg_addr & SWC_PAGE_MASK;
+ RTL_W32(SWC_PAGE_ADDR, page_addr);
+ rtase_swc_get_from_ptm(&cmd);
+
+ if (copy_to_user(useraddr, &cmd, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static s32 rtase_ptm_swc_set(const struct ifreq *ifr, const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = rtase_swc_device.swc_ioaddr;
+ const void *useraddr = (void *)ifr->ifr_data;
+ struct rtase_ptm_cmd_t cmd;
+ u32 page_addr;
+ u32 addr;
+ s32 ret = 0;
+
+ (void)tp;
+
+ if (copy_from_user(&cmd, useraddr, sizeof(struct rtase_ptm_cmd_t)) != 0u) {
+ ret = -EFAULT;
+ } else {
+ page_addr = cmd.reg_addr & SWC_PAGE_MASK;
+ addr = cmd.reg_addr & SWC_ADDR_MASK;
+ RTL_W32(SWC_PAGE_ADDR, page_addr);
+ RTL_W32(addr, cmd.reg_value);
+ }
+
+ return ret;
+}
+
+static void rtase_swc_reg_get(struct rtase_swc_cmd_t *cmd)
+{
+ void __iomem *ioaddr = rtase_swc_device.swc_ioaddr;
+ u32 page_addr = cmd->reg_addr & SWC_PAGE_MASK;
+ u32 addr = cmd->reg_addr & SWC_ADDR_MASK;
+
+ RTL_W32(SWC_PAGE_ADDR, page_addr);
+ switch (cmd->type) {
+ case SWC_CMD_TYPE_8:
+ cmd->reg_value = RTL_R8(addr);
+ break;
+ case SWC_CMD_TYPE_16:
+ cmd->reg_value = RTL_R16(addr);
+ break;
+ case SWC_CMD_TYPE_32:
+ default:
+ cmd->reg_value = RTL_R32(addr);
+ break;
+ }
+}
+
+static void rtase_swc_reg_set(const struct rtase_swc_cmd_t *cmd)
+{
+ void __iomem *ioaddr = rtase_swc_device.swc_ioaddr;
+ u32 page_addr = cmd->reg_addr & SWC_PAGE_MASK;
+ u32 addr = cmd->reg_addr & SWC_ADDR_MASK;
+
+ RTL_W32(SWC_PAGE_ADDR, page_addr);
+ switch (cmd->type) {
+ case SWC_CMD_TYPE_8:
+ RTL_W8(addr, (u8)cmd->reg_value);
+ break;
+ case SWC_CMD_TYPE_16:
+ RTL_W16(addr, (u16)cmd->reg_value);
+ break;
+ case SWC_CMD_TYPE_32:
+ default:
+ RTL_W32(addr, cmd->reg_value);
+ break;
+ }
+}
+
+static long rtase_swc_ioctl(struct file *p_file, unsigned int cmd, unsigned long arg)
+{
+ long rc = 0;
+ struct rtase_swc_cmd_t sw_cmd;
+
+ (void)p_file;
+
+ if (rtase_swc_device.init_flag == 1u) {
+ rc = -ENXIO;
+ goto out;
+ }
+
+ rc = (s64)(copy_from_user(&sw_cmd, (void *)arg, sizeof(struct rtase_swc_cmd_t)));
+
+ if (rc != 0) {
+ SWC_DRIVER_INFO("rtase_swc copy_from_user failed.");
+ } else {
+ switch (cmd) {
+ case SWC_CMD_REG_GET:
+ rtase_swc_reg_get(&sw_cmd);
+ rc = (s64)(copy_to_user((void *)arg, &sw_cmd,
+ sizeof(struct rtase_swc_cmd_t)));
+ break;
+
+ case SWC_CMD_REG_SET:
+ rtase_swc_reg_set(&sw_cmd);
+ rc = (s64)(copy_to_user((void *)arg, &sw_cmd,
+ sizeof(struct rtase_swc_cmd_t)));
+ break;
+
+ default:
+ rc = -ENOTTY;
+ break;
+ }
+ }
+
+out:
+ return rc;
+}
+
+static const struct file_operations rtase_swc_fops = {
+ .owner = THIS_MODULE,
+ .open = rtase_swc_open,
+ .release = rtase_swc_release,
+ .unlocked_ioctl = rtase_swc_ioctl,
+};
+
+static int rtase_swc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ int rc;
+ void __iomem *ioaddr = NULL;
+ dev_t devno = MKDEV(SWC_DRIVER_MAJOR, 0);
+
+ (void)ent;
+
+ rtase_swc_device.init_flag = 1;
+ rc = pci_enable_device(pdev);
+
+ if (rc != 0)
+ SWC_DRIVER_INFO("rtase_swc enable device failed.");
+ else
+ rc = pci_request_regions(pdev, SWC_DRIVER_NAME);
+
+ if (rc == 0) {
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+ if (rc != 0)
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ }
+
+ if (rc != 0) {
+ SWC_DRIVER_INFO("rtase_swc request regions failed.");
+ pci_disable_device(pdev);
+ } else {
+ pci_set_master(pdev);
+ ioaddr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+ }
+
+ if (!ioaddr) {
+ SWC_DRIVER_INFO("rtase_swc ioremap failed.");
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ } else {
+ rc = register_chrdev_region(devno, 1, SWC_DRIVER_NAME);
+ }
+
+ if (rc != 0) {
+ SWC_DRIVER_INFO("rtase_swc register character device failed.");
+ iounmap(ioaddr);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ } else {
+ rtase_swc_device.swc_ioaddr = ioaddr;
+ cdev_init(&rtase_swc_device.swc_cdev, &rtase_swc_fops);
+ rtase_swc_device.swc_cdev.owner = THIS_MODULE;
+ cdev_add(&rtase_swc_device.swc_cdev, devno, 1);
+ rtase_swc_device.init_flag = 0;
+ }
+
+ return rc;
+}
+
+static void rtase_swc_remove_one(struct pci_dev *pdev)
+{
+ iounmap(rtase_swc_device.swc_ioaddr);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ cdev_del(&rtase_swc_device.swc_cdev);
+ unregister_chrdev_region(MKDEV(SWC_DRIVER_MAJOR, 0), 1);
+ rtase_swc_device.init_flag = 1;
+}
+
+static struct pci_driver rtase_swc_pci_driver = {
+ .name = SWC_DRIVER_NAME,
+ .id_table = rtase_swc_pci_table,
+ .probe = rtase_swc_init_one,
+ .remove = rtase_swc_remove_one,
+};
+
+static int __init rtase_init_module(void)
+{
+ int ret = 0;
+
+ work_queue = create_singlethread_workqueue("rtase_work_queue");
+ if (!work_queue) {
+ ret = -ENOMEM;
+ } else {
+#ifdef ENABLE_RTASE_PROCFS
+ rtase_proc_module_init();
+#endif
+ ret = pci_register_driver(&rtase_pci_driver);
+ if (ret != 0) {
+ destroy_workqueue(work_queue);
+ pr_alert("rtase_pci_driver register failed.");
+ } else {
+ ret = pci_register_driver(&rtase_swc_pci_driver);
+ }
+
+ if (ret != 0) {
+ pci_unregister_driver(&rtase_pci_driver);
+ destroy_workqueue(work_queue);
+ pr_alert("rtase_swc_pci_driver register failed.");
+ }
+ }
+
+ return ret;
+}
+
+static void __exit rtase_cleanup_module(void)
+{
+ pci_unregister_driver(&rtase_swc_pci_driver);
+
+ pci_unregister_driver(&rtase_pci_driver);
+#ifdef ENABLE_RTASE_PROCFS
+ if (rtase_proc) {
+ remove_proc_subtree(MODULENAME, init_net.proc_net);
+ rtase_proc = NULL;
+ }
+#endif
+ destroy_workqueue(work_queue);
+}
+
+module_init(rtase_init_module);
+module_exit(rtase_cleanup_module);
diff --git a/drivers/net/ethernet/realtek/rtase/rtase_sriov.c b/drivers/net/ethernet/realtek/rtase/rtase_sriov.c
new file mode 100644
index 000000000000..9441d59a3271
--- /dev/null
+++ b/drivers/net/ethernet/realtek/rtase/rtase_sriov.c
@@ -0,0 +1,328 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright(c) 2023 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * Author:
+ * Realtek ARD1 software team
+ */
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+
+#include "rtase.h"
+#include "rtase_sriov.h"
+
+/******************************************************************************
+ * Function
+ ******************************************************************************/
+static int rtase_allocate_vf_data(struct rtase_private *tp, int num_vfs)
+{
+ int ret = 0;
+
+ tp->vf_info = kcalloc((u64)num_vfs, sizeof(struct vf_info), GFP_KERNEL);
+ if (!tp->vf_info)
+ ret = -ENOMEM;
+ else
+ tp->num_vfs = (u16)num_vfs;
+
+ return ret;
+}
+
+static void rtase_get_vfs(const struct rtase_private *tp)
+{
+ struct pci_dev *pdev = tp->pdev;
+ struct pci_dev *vf_pdev = NULL;
+ u16 vendor = pdev->vendor;
+ int index = 0;
+ u16 vf_id = 0;
+ int sriov_pos = 0;
+
+ sriov_pos = (s32)pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
+
+ if (sriov_pos == 0) {
+ sriov_warn("\tcan't find sriov position.");
+ } else {
+ pci_read_config_word(pdev, sriov_pos + PCI_SRIOV_VF_DID, &vf_id);
+ sriov_info("rtase VF Device ID = %04x", vf_id);
+
+ vf_pdev = pci_get_device(vendor, vf_id, NULL);
+
+ for (; vf_pdev != NULL; vf_pdev = pci_get_device(vendor, vf_id, vf_pdev)) {
+ if (vf_pdev->is_virtfn == 0u)
+ continue;
+
+#ifdef CONFIG_PCI_IOV
+ if (vf_pdev->physfn != pdev)
+ continue;
+
+#endif
+
+ pci_dev_get(vf_pdev);
+ tp->vf_info[index].vf_pci_dev = vf_pdev;
+
+ if (++index >= (s32)tp->num_vfs)
+ break;
+ }
+ sriov_info("%s...index = %i", __func__, index);
+ }
+}
+
+static void rtase_sriov_hw_settings(struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 tmp_reg = 0;
+ unsigned long flags;
+
+ sriov_info("%s...vf_num = %i", __func__, tp->num_vfs);
+ spin_lock_irqsave(&tp->lock, flags);
+ if (tp->num_vfs != 0u) {
+ /* select rxq number */
+ tmp_reg = RTL_R16(VQCTRL);
+ tmp_reg &= (u16)(~(0x7u << 2u));
+ if (tp->num_vfs == 1u)
+ tmp_reg |= (0x3u << 2u);
+ else if (tp->num_vfs <= 3u)
+ tmp_reg |= (0x4u << 2u);
+ else
+ tmp_reg |= (0x5u << 2u);
+
+ RTL_W16(VQCTRL, tmp_reg);
+ sriov_info("VQCTRL = %04x", RTL_R16(VQCTRL));
+
+ /* Mailbox interrupt mask */
+ RTL_W8(PFMSGIMR, 0x7F);
+
+ tp->sw_flag |= (u32)SWF_SRIOV_ENABLED;
+ } else {
+ /* restore rxq number TBD: restore PF rxq */
+ tmp_reg = RTL_R16(VQCTRL);
+ tmp_reg &= (u16)(~(0x7u << 2u));
+ tmp_reg |= (0x2u << 2u);
+ RTL_W16(VQCTRL, tmp_reg);
+ sriov_info("VQCTRL = %04x", RTL_R16(VQCTRL));
+
+ /* Mailbox interrupt mask */
+ RTL_W8(PFMSGIMR, 0x0);
+
+ tp->sw_flag &= (u32)(~SWF_SRIOV_ENABLED);
+ }
+ spin_unlock_irqrestore(&tp->lock, flags);
+}
+
+s32 rtase_disable_sriov(struct rtase_private *tp)
+{
+ u16 num_vfs = tp->num_vfs;
+ u16 index = 0;
+ s32 ret = 0;
+
+ tp->num_vfs = 0;
+ for (index = 0; index < num_vfs; index++) {
+ struct pci_dev *vf_pdev = tp->vf_info[index].vf_pci_dev;
+
+ if (vf_pdev) {
+ pci_dev_put(vf_pdev);
+ tp->vf_info[index].vf_pci_dev = NULL;
+ }
+ }
+
+ /* free vf_info */
+ kfree(tp->vf_info);
+ tp->vf_info = NULL;
+
+ /* pci disabe sriov*/
+ if (pci_vfs_assigned(tp->pdev) != 0) {
+ sriov_warn("VFs are assigned !");
+ ret = -EPERM;
+ } else {
+ pci_disable_sriov(tp->pdev);
+
+ /* sriov hardware settings */
+ rtase_sriov_hw_settings(tp);
+ }
+
+ return ret;
+}
+
+static int rtase_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
+{
+ const struct net_device *dev = pci_get_drvdata(pdev);
+ struct rtase_private *tp = netdev_priv(dev);
+ int err = 0;
+ u16 existed_vfs = (u16)pci_num_vf(pdev);
+ int ret = 0;
+
+ if (tp->num_vfs == (u32)num_vfs)
+ ret = -EINVAL;
+
+ if ((existed_vfs != 0u) && (existed_vfs != (u32)num_vfs)) {
+ err = rtase_disable_sriov(tp);
+ if (err != 0) {
+ ret = err;
+ goto out;
+ }
+ } else if ((existed_vfs != 0u) && (existed_vfs == (u32)num_vfs)) {
+ ret = num_vfs;
+ goto out;
+ } else {
+ sriov_warn("existed_vfs = 0\n");
+ }
+
+ err = rtase_allocate_vf_data(tp, num_vfs);
+ if (err != 0) {
+ sriov_warn("allocate vf data failed.");
+ ret = err;
+ goto out;
+ }
+
+ err = pci_enable_sriov(pdev, num_vfs);
+ if (err != 0) {
+ sriov_warn("pci_enable_sriov failed: %d\n", err);
+ ret = err;
+ goto out;
+ }
+
+ /* sriov hardware settings */
+ rtase_sriov_hw_settings(tp);
+
+ rtase_get_vfs(tp);
+
+out:
+ return ret;
+}
+
+static int rtase_pci_sriov_disable(struct pci_dev *pdev)
+{
+ const struct net_device *dev = pci_get_drvdata(pdev);
+ struct rtase_private *tp = netdev_priv(dev);
+ int err;
+
+ if ((tp->num_vfs == 0u) && (pci_num_vf(pdev) == 0))
+ err = -EINVAL;
+ else
+ err = rtase_disable_sriov(tp);
+
+ return err;
+}
+
+/* TBD: need to modify, now all enable */
+static void rtase_sriov_cr(const struct rtase_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u16 cr = RTL_R16(FCR);
+
+ cr |= (u16)(FCR_BAR_EN | FCR_MAR_EN | FCR_TX_LOOPBACK_EN);
+ RTL_W16(FCR, cr);
+
+ RTL_W16(LBK_CTRL, (u16)(LBK_ATLD | LBK_CLR));
+}
+
+int rtase_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct rtase_private *tp = netdev_priv(dev);
+ int ret = 0;
+
+ sriov_info("%s...%i", __func__, num_vfs);
+
+ netif_stop_queue(dev);
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u)
+ rtase_func_disable(tp);
+
+ rtase_hw_reset(dev);
+ rtase_tx_clear(tp);
+ rtase_rx_clear(tp);
+
+ if (rtase_init_ring(dev) != 0)
+ netdev_info(tp->dev, "unable to init ring\n");
+
+ if (num_vfs == 0)
+ ret = rtase_pci_sriov_disable(pdev);
+ else
+ ret = rtase_pci_sriov_enable(pdev, num_vfs);
+
+ if (ret != -EINVAL) {
+ mdelay(10);
+
+ rtase_hw_set_rx_packet_filter(dev);
+ rtase_hw_start(dev);
+ if ((tp->sw_flag & SWF_SRIOV_ENABLED) != 0u) {
+ rtase_func_enable(tp);
+ rtase_sriov_cr(tp);
+ }
+
+ netif_wake_queue(dev);
+ }
+
+ return ret;
+}
+
+static void rtl_set_vf_mac(struct rtase_private *tp, int vf, const u8 *mac)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ unsigned long flags;
+ u16 tmp;
+
+ spin_lock_irqsave(&tp->lock, flags);
+
+ tmp = ((u16)mac[0] << 8) | (u16)mac[1];
+ RTL_W16(((s32)VF_MAC_0 + (vf * 8)), tmp);
+ tmp = ((u16)mac[2] << 8) | (u16)mac[3];
+ RTL_W16(((s32)VF_MAC_2 + (vf * 8)), tmp);
+ tmp = ((u16)mac[4] << 8) | (u16)mac[5];
+ RTL_W16(((s32)VF_MAC_4 + (vf * 8)), tmp);
+
+ spin_unlock_irqrestore(&tp->lock, flags);
+}
+
+#ifdef IFLA_VF_MAX
+int rtase_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
+{
+ struct rtase_private *tp = netdev_priv(netdev);
+ struct vf_info *vf_info = NULL;
+ int ret = 0;
+
+ sriov_info("%s:vf = %i, MAC:%02x:%02x:%02x:%02x:%02x:%02x", __func__, vf, mac[0], mac[1],
+ mac[2], mac[3], mac[4], mac[5]);
+
+ if (vf >= (s16)tp->num_vfs) {
+ ret = -EINVAL;
+ } else {
+ vf_info = &tp->vf_info[vf];
+
+ if (is_valid_ether_addr(mac)) {
+ rtl_set_vf_mac(tp, vf, mac);
+ memcpy(vf_info->vf_mac, mac, ETH_ALEN);
+ } else if (is_zero_ether_addr(mac)) {
+ rtl_set_vf_mac(tp, vf, mac);
+ memcpy(vf_info->vf_mac, mac, ETH_ALEN);
+ } else {
+ ret = -EINVAL;
+ }
+ }
+
+ return ret;
+}
+
+int rtase_get_vf_config(struct net_device *netdev, int vf, struct ifla_vf_info *ivi)
+{
+ const struct rtase_private *tp = netdev_priv(netdev);
+ const struct vf_info *vf_info = NULL;
+ int ret = 0;
+
+ sriov_info("%s...%i", __func__, vf);
+
+ if (vf >= (s16)tp->num_vfs) {
+ sriov_info("%s...%i EINVAL", __func__, vf);
+ ret = -EINVAL;
+ } else {
+ vf_info = &tp->vf_info[vf];
+ ivi->vf = (u32)vf;
+ memcpy(ivi->mac, vf_info->vf_mac, ETH_ALEN);
+ }
+
+ return ret;
+}
+#endif
diff --git a/drivers/net/ethernet/realtek/rtase/rtase_sriov.h b/drivers/net/ethernet/realtek/rtase/rtase_sriov.h
new file mode 100644
index 000000000000..62dafbd18f9a
--- /dev/null
+++ b/drivers/net/ethernet/realtek/rtase/rtase_sriov.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright(c) 2023 Realtek Semiconductor Corp. All rights reserved.
+ *
+ * Author:
+ * Realtek ARD software team
+ */
+#ifndef RTASE_SRIOV_H_
+#define RTASE_SRIOV_H_
+
+/* Defines
+ */
+#ifdef SRIOV_DEBUG
+#define sriov_warn(format, args...) pr_warning(format, ##args)
+#define sriov_info(format, args...) pr_info(format, ##args)
+#else
+#define sriov_warn(format, args...)
+#define sriov_info(format, args...)
+#endif
+
+/* Function Prototype
+ */
+s32 rtase_disable_sriov(struct rtase_private *tp);
+int rtase_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);
+#ifdef IFLA_VF_MAX
+int rtase_set_vf_mac(struct net_device *netdev, int vf, u8 *mac);
+int rtase_get_vf_config(struct net_device *netdev, int vf, struct ifla_vf_info *ivi);
+#endif
+
+#endif /* RTASE_SRIOV_H_ */
--
2.34.1