/*
* Tehuti Networks(R) Network Driver
* Copyright (C) 2007 Tehuti Networks Ltd. All rights reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef _TEHUTI_H
#define _TEHUTI_H
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/crc32.h>
#include <linux/uaccess.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/if_vlan.h>
#include <linux/interrupt.h>
#include <linux/vmalloc.h>
#include <linux/firmware.h>
#include <asm/byteorder.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
/* Compile Time Switches */
/* start */
#define BDX_TSO
#define BDX_LLTX
#define BDX_DELAY_WPTR
/* #define BDX_MSI */
/* end */
#if !defined CONFIG_PCI_MSI
# undef BDX_MSI
#endif
#define BDX_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
NETIF_MSG_PROBE | \
NETIF_MSG_LINK)
/* ioctl ops */
#define BDX_OP_READ 1
#define BDX_OP_WRITE 2
/* RX copy break size */
#define BDX_COPYBREAK 257
#define DRIVER_AUTHOR "Tehuti Networks(R)"
#define BDX_DRV_DESC "Tehuti Networks(R) Network Driver"
#define BDX_DRV_NAME "tehuti"
#define BDX_NIC_NAME "Tehuti 10 Giga TOE SmartNIC"
#define BDX_NIC2PORT_NAME "Tehuti 2-Port 10 Giga TOE SmartNIC"
#define BDX_DRV_VERSION "7.29.3"
#ifdef BDX_MSI
# define BDX_MSI_STRING "msi "
#else
# define BDX_MSI_STRING ""
#endif
/* netdev tx queue len for Luxor. default value is, btw, 1000
* ifcontig eth1 txqueuelen 3000 - to change it at runtime */
#define BDX_NDEV_TXQ_LEN 3000
#define FIFO_SIZE 4096
#define FIFO_EXTRA_SPACE 1024
#if BITS_PER_LONG == 64
# define H32_64(x) (u32) ((u64)(x) >> 32)
# define L32_64(x) (u32) ((u64)(x) & 0xffffffff)
#elif BITS_PER_LONG == 32
# define H32_64(x) 0
# define L32_64(x) ((u32) (x))
#else /* BITS_PER_LONG == ?? */
# error BITS_PER_LONG is undefined. Must be 64 or 32
#endif /* BITS_PER_LONG */
#ifdef __BIG_ENDIAN
# define CPU_CHIP_SWAP32(x) swab32(x)
# define CPU_CHIP_SWAP16(x) swab16(x)
#else
# define CPU_CHIP_SWAP32(x) (x)
# define CPU_CHIP_SWAP16(x) (x)
#endif
#define READ_REG(pp, reg) readl(pp->pBdxRegs + reg)
#define WRITE_REG(pp, reg, val) writel(val, pp->pBdxRegs + reg)
#ifndef NET_IP_ALIGN
# define NET_IP_ALIGN 2
#endif
#ifndef NETDEV_TX_OK
# define NETDEV_TX_OK 0
#endif
#define LUXOR_MAX_PORT 2
#define BDX_MAX_RX_DONE 150
#define BDX_TXF_DESC_SZ 16
#define BDX_MAX_TX_LEVEL (priv->txd_fifo0.m.memsz - 16)
#define BDX_MIN_TX_LEVEL 256
#define BDX_NO_UPD_PACKETS 40
struct pci_nic {
int port_num;
void __iomem *regs;
int irq_type;
struct bdx_priv *priv[LUXOR_MAX_PORT];
};
enum { IRQ_INTX, IRQ_MSI, IRQ_MSIX };
#define PCK_TH_MULT 128
#define INT_COAL_MULT 2
#define BITS_MASK(nbits) ((1<<nbits)-1)
#define GET_BITS_SHIFT(x, nbits, nshift) (((x)>>nshift)&BITS_MASK(nbits))
#define BITS_SHIFT_MASK(nbits, nshift) (BITS_MASK(nbits)<<nshift)
#define BITS_SHIFT_VAL(x, nbits, nshift) (((x)&BITS_MASK(nbits))<<nshift)
#define BITS_SHIFT_CLEAR(x, nbits, nshift) \
((x)&(~BITS_SHIFT_MASK(nbits, nshift)))
#define GET_INT_COAL(x) GET_BITS_SHIFT(x, 15, 0)
#define GET_INT_COAL_RC(x) GET_BITS_SHIFT(x, 1, 15)
#define GET_RXF_TH(x) GET_BITS_SHIFT(x, 4, 16)
#define GET_PCK_TH(x) GET_BITS_SHIFT(x, 4, 20)
#define INT_REG_VAL(coal, coal_rc, rxf_th, pck_th) \
((coal)|((coal_rc)<<15)|((rxf_th)<<16)|((pck_th)<<20))
struct fifo {
dma_addr_t da; /* physical address of fifo (used by HW) */
char *va; /* virtual address of fifo (used by SW) */
u32 rptr, wptr; /* cached values of RPTR and WPTR registers,
they're 32 bits on both 32 and 64 archs */
u16 reg_CFG0, reg_CFG1;
u16 reg_RPTR, reg_WPTR;
u16 memsz; /* memory size allocated for fifo */
u16 size_mask;
u16 pktsz; /* skb packet size to allocate */
u16 rcvno; /* number of buffers that come from this RXF */
};
struct txf_fifo {
struct fifo m; /* minimal set of variables used by all fifos */
};
struct txd_fifo {
struct fifo m; /* minimal set of variables used by all fifos */
};
struct rxf_fifo {
struct fifo m; /* minimal set of variables used by all fifos */
};
struct rxd_fifo {
struct fifo m; /* minimal set of variables used by all fifos */
};
struct rx_map {
u64 dma;
struct sk_buff *skb;
};
struct rxdb {
int *stack;
struct rx_map *elems;
int nelem;
int top;
};
union bdx_dma_addr {
dma_addr_t dma;
struct sk_buff *skb;
};
/* Entry in the db.
* if len == 0 addr is dma
* if len != 0 addr is skb */
struct tx_map {
union bdx_dma_addr addr;
int len;
};
/* tx database - implemented as circular fifo buffer*/
struct txdb {
struct tx_map *start; /* points to the first element */
struct tx_map *end; /* points just AFTER the last element */
struct tx_map *rptr; /* points to the next element to read */
struct tx_map *wptr; /* points to the next element to write */
int size; /* number of elements in the db */
};
/*Internal stats structure*/
struct bdx_stats {
u64 InUCast; /* 0x7200 */
u64 InMCast; /* 0x7210 */
u64 InBCast; /* 0x7220 */
u64 InPkts; /* 0x7230 */
u64 InErrors; /* 0x7240 */
u64 InDropped; /* 0x7250 */
u64 FrameTooLong; /* 0x7260 */
u64 FrameSequenceErrors; /* 0x7270 */
u64 InVLAN; /* 0x7280 */
u64 InDroppedDFE; /* 0x7290 */
u64 InDroppedIntFull; /* 0x72A0 */
u64 InFrameAlignErrors; /* 0x72B0 */
/* 0x72C0-0x72E0 RSRV */
u64 OutUCast; /* 0x72F0 */
u64 OutMCast; /* 0x7300 */
u64 OutBCast; /* 0x7310 */
u64 OutPkts; /* 0x7320 */
/* 0x7330-0x7360 RSRV */
u64 OutVLAN; /* 0x7370 */
u64 InUCastOctects; /* 0x7380 */
u64 OutUCastOctects; /* 0x7390 */
/* 0x73A0-0x73B0 RSRV */
u64 InBCastOctects; /* 0x73C0 */
u64 OutBCastOctects; /* 0x73D0 */
u64 InOctects; /* 0x73E0 */
u64 OutOctects; /* 0x73F0 */
};
struct bdx_priv {
void __iomem *pBdxRegs;
struct net_device *ndev;
struct napi_struct napi;
/* RX FIFOs: 1 for data (full) descs, and 2 for free descs */
struct rxd_fifo rxd_fifo0;
struct rxf_fifo rxf_fifo0;
struct rxdb *rxdb; /* rx dbs to store skb pointers */
int napi_stop;
/* Tx FIFOs: 1 for data desc, 1 for empty (acks) desc */
struct txd_fifo txd_fifo0;
struct txf_fifo txf_fifo0;
struct txdb txdb;
int tx_level;
#ifdef BDX_DELAY_WPTR
int tx_update_mark;
int tx_noupd;
#endif
spinlock_t tx_lock; /* NETIF_F_LLTX mode */
/* rarely used */
u8 port;
u32 msg_enable;
int stats_flag;
struct bdx_stats hw_stats;
struct pci_dev *pdev;
struct pci_nic *nic;
u8 txd_size;
u8 txf_size;
u8 rxd_size;
u8 rxf_size;
u32 rdintcm;
u32 tdintcm;
};
/* RX FREE descriptor - 64bit*/
struct rxf_desc {
u32 info; /* Buffer Count + Info - described below */
u32 va_lo; /* VAdr[31:0] */
u32 va_hi; /* VAdr[63:32] */
u32 pa_lo; /* PAdr[31:0] */
u32 pa_hi; /* PAdr[63:32] */
u32 len; /* Buffer Length */
};
#define GET_RXD_BC(x) GET_BITS_SHIFT((x), 5, 0)
#define GET_RXD_RXFQ(x) GET_BITS_SHIFT((x), 2, 8)
#define GET_RXD_TO(x) GET_BITS_SHIFT((x), 1, 15)
#define GET_RXD_TYPE(x) GET_BITS_SHIFT((x), 4, 16)
#define GET_RXD_ERR(x) GET_BITS_SHIFT((x), 6, 21)
#define GET_RXD_RXP(x) GET_BITS_SHIFT((x), 1, 27)
#define GET_RXD_PKT_ID(x) GET_BITS_SHIFT((x), 3, 28)
#define GET_RXD_VTAG(x) GET_BITS_SHIFT((x), 1, 31)
#define GET_RXD_VLAN_ID(x) GET_BITS_SHIFT((x), 12, 0)
#define GET_RXD_VLAN_TCI(x) GET_BITS_SHIFT((x), 16, 0)
#define GET_RXD_CFI(x) GET_BITS_SHIFT((x), 1, 12)
#define GET_RXD_PRIO(x) GET_BITS_SHIFT((x), 3, 13)
struct rxd_desc {
u32 rxd_val1;
u16 len;
u16 rxd_vlan;
u32 va_lo;
u32 va_hi;
};
/* PBL describes each virtual buffer to be */
/* transmitted from the host.*/
struct pbl {
u32 pa_lo;
u32 pa_hi;
u32 len;
};
/* First word for TXD descriptor. It means: type = 3 for regular Tx packet,
* hw_csum = 7 for ip+udp+tcp hw checksums */
#define TXD_W1_VAL(bc, checksum, vtag, lgsnd, vlan_id) \
((bc) | ((checksum)<<5) | ((vtag)<<8) | \
((lgsnd)<<9) | (0x30000) | ((vlan_id)<<20))
struct txd_desc {
u32 txd_val1;
u16 mss;
u16 length;
u32 va_lo;
u32 va_hi;
struct pbl pbl[0]; /* Fragments */
} __packed;
/* Register region size */
#define BDX_REGS_SIZE 0x1000
/* Registers from 0x0000-0x00fc were remapped to 0x4000-0x40fc */
#define regTXD_CFG1_0 0x4000
#define regRXF_CFG1_0 0x4010
#define regRXD_CFG1_0 0x4020
#define regTXF_CFG1_0 0x4030
#define regTXD_CFG0_0 0x4040
#define regRXF_CFG0_0 0x4050
#define regRXD_CFG0_0 0x4060
#define regTXF_CFG0_0 0x4070
#define regTXD_WPTR_0 0x4080
#define regRXF_WPTR_0 0x4090
#define regRXD_WPTR_0 0x40A0
#define regTXF_WPTR_0 0x40B0
#define regTXD_RPTR_0 0x40C0
#define regRXF_RPTR_0 0x40D0
#define regRXD_RPTR_0 0x40E0
#define regTXF_RPTR_0 0x40F0
#define regTXF_RPTR_3 0x40FC
/* hardware versioning */
#define FW_VER 0x5010
#define SROM_VER 0x5020
#define FPGA_VER 0x5030
#define FPGA_SEED 0x5040
/* Registers from 0x0100-0x0150 were remapped to 0x5100-0x5150 */
#define regISR regISR0
#define regISR0 0x5100
#define regIMR regIMR0
#define regIMR0 0x5110
#define regRDINTCM0 0x5120
#define regRDINTCM2 0x5128
#define regTDINTCM0 0x5130
#define regISR_MSK0 0x5140
#define regINIT_SEMAPHORE 0x5170
#define regINIT_STATUS 0x5180
#define regMAC_LNK_STAT 0x0200
#define MAC_LINK_STAT 0x4 /* Link state */
#define regGMAC_RXF_A 0x1240
#define regUNC_MAC0_A 0x1250
#define regUNC_MAC1_A 0x1260
#define regUNC_MAC2_A 0x1270
#define regVLAN_0 0x1800
#define regMAX_FRAME_A 0x12C0
#define regRX_MAC_MCST0 0x1A80
#define regRX_MAC_MCST1 0x1A84
#define MAC_MCST_NUM 15
#define regRX_MCST_HASH0 0x1A00
#define MAC_MCST_HASH_NUM 8
#define regVPC 0x2300
#define regVIC 0x2320
#define regVGLB 0x2340
#define regCLKPLL 0x5000
/*for 10G only*/
#define regREVISION 0x6000
#define regSCRATCH 0x6004
#define regCTRLST 0x6008
#define regMAC_ADDR_0 0x600C
#define regMAC_ADDR_1 0x6010
#define regFRM_LENGTH 0x6014
#define regPAUSE_QUANT 0x6018
#define regRX_FIFO_SECTION 0x601C
#define regTX_FIFO_SECTION 0x6020
#define regRX_FULLNESS 0x6024
#define regTX_FULLNESS 0x6028
#define regHASHTABLE 0x602C
#define regMDIO_ST 0x6030
#define regMDIO_CTL 0x6034
#define regMDIO_DATA 0x6038
#define regMDIO_ADDR 0x603C
#define regRST_PORT 0x7000
#define regDIS_PORT 0x7010
#define regRST_QU 0x7020
#define regDIS_QU 0x7030
#define regCTRLST_TX_ENA 0x0001
#define regCTRLST_RX_ENA 0x0002
#define regCTRLST_PRM_ENA 0x0010
#define regCTRLST_PAD_ENA 0x0020
#define regCTRLST_BASE (regCTRLST_PAD_ENA|regCTRLST_PRM_ENA)
#define regRX_FLT 0x1400
/* TXD TXF RXF RXD CONFIG 0x0000 --- 0x007c*/
#define TX_RX_CFG1_BASE 0xffffffff /*0-31 */
#define TX_RX_CFG0_BASE 0xfffff000 /*31:12 */
#define TX_RX_CFG0_RSVD 0x0ffc /*11:2 */
#define TX_RX_CFG0_SIZE 0x0003 /*1:0 */
/* TXD TXF RXF RXD WRITE 0x0080 --- 0x00BC */
#define TXF_WPTR_WR_PTR 0x7ff8 /*14:3 */
/* TXD TXF RXF RXD READ 0x00CO --- 0x00FC */
#define TXF_RPTR_RD_PTR 0x7ff8 /*14:3 */
#define TXF_WPTR_MASK 0x7ff0 /* last 4 bits are dropped
* size is rounded to 16 */
/* regISR 0x0100 */
/* regIMR 0x0110 */
#define IMR_INPROG 0x80000000 /*31 */
#define IR_LNKCHG1 0x10000000 /*28 */
#define IR_LNKCHG0 0x08000000 /*27 */
#define IR_GPIO 0x04000000 /*26 */
#define IR_RFRSH 0x02000000 /*25 */
#define IR_RSVD 0x01000000 /*24 */
#define IR_SWI 0x00800000 /*23 */
#define IR_RX_FREE_3 0x00400000 /*22 */
#define IR_RX_FREE_2 0x00200000 /*21 */
#define IR_RX_FREE_1 0x00100000 /*20 */
#define IR_RX_FREE_0 0x00080000 /*19 */
#define IR_TX_FREE_3 0x00040000 /*18 */
#define IR_TX_FREE_2 0x00020000 /*17 */
#define IR_TX_FREE_1 0x00010000 /*16 */
#define IR_TX_FREE_0 0x00008000 /*15 */
#define IR_RX_DESC_3 0x00004000 /*14 */
#define IR_RX_DESC_2 0x00002000 /*13 */
#define IR_RX_DESC_1 0x00001000 /*12 */
#define IR_RX_DESC_0 0x00000800 /*11 */
#define IR_PSE 0x00000400 /*10 */
#define IR_TMR3 0x00000200 /*9 */
#define IR_TMR2 0x00000100 /*8 */
#define IR_TMR1 0x00000080 /*7 */
#define IR_TMR0 0x00000040 /*6 */
#define IR_VNT 0x00000020 /*5 */
#define IR_RxFL 0x00000010 /*4 */
#define IR_SDPERR 0x00000008 /*3 */
#define IR_TR 0x00000004 /*2 */
#define IR_PCIE_LINK 0x00000002 /*1 */
#define IR_PCIE_TOUT 0x00000001 /*0 */
#define IR_EXTRA (IR_RX_FREE_0 | IR_LNKCHG0 | IR_PSE | \
IR_TMR0 | IR_PCIE_LINK | IR_PCIE_TOUT)
#define IR_RUN (IR_EXTRA | IR_RX_DESC_0 | IR_TX_FREE_0)
#define IR_ALL 0xfdfffff7
#define IR_LNKCHG0_ofst 27
#define GMAC_RX_FILTER_OSEN 0x1000 /* shared OS enable */
#define GMAC_RX_FILTER_TXFC 0x0400 /* Tx flow control */
#define GMAC_RX_FILTER_RSV0 0x0200 /* reserved */
#define GMAC_RX_FILTER_FDA 0x0100 /* filter out direct address */
#define GMAC_RX_FILTER_AOF 0x0080 /* accept over run */
#define GMAC_RX_FILTER_ACF 0x0040 /* accept control frames */
#define GMAC_RX_FILTER_ARUNT 0x0020 /* accept under run */
#define GMAC_RX_FILTER_ACRC 0x0010 /* accept crc error */
#define GMAC_RX_FILTER_AM 0x0008 /* accept multicast */
#define GMAC_RX_FILTER_AB 0x0004 /* accept broadcast */
#define GMAC_RX_FILTER_PRM 0x0001 /* [0:1] promiscuous mode */
#define MAX_FRAME_AB_VAL 0x3fff /* 13:0 */
#define CLKPLL_PLLLKD 0x0200 /*9 */
#define CLKPLL_RSTEND 0x0100 /*8 */
#define CLKPLL_SFTRST 0x0001 /*0 */
#define CLKPLL_LKD (CLKPLL_PLLLKD|CLKPLL_RSTEND)
/*
* PCI-E Device Control Register (Offset 0x88)
* Source: Luxor Data Sheet, 7.1.3.3.3
*/
#define PCI_DEV_CTRL_REG 0x88
#define GET_DEV_CTRL_MAXPL(x) GET_BITS_SHIFT(x, 3, 5)
#define GET_DEV_CTRL_MRRS(x) GET_BITS_SHIFT(x, 3, 12)
/*
* PCI-E Link Status Register (Offset 0x92)
* Source: Luxor Data Sheet, 7.1.3.3.7
*/
#define PCI_LINK_STATUS_REG 0x92
#define GET_LINK_STATUS_LANES(x) GET_BITS_SHIFT(x, 6, 4)
/* Debugging Macros */
#define DBG2(fmt, args...) \
pr_err("%s:%-5d: " fmt, __func__, __LINE__, ## args)
#define BDX_ASSERT(x) BUG_ON(x)
#ifdef DEBUG
#define ENTER \
do { \
pr_err("%s:%-5d: ENTER\n", __func__, __LINE__); \
} while (0)
#define RET(args...) \
do { \
pr_err("%s:%-5d: RETURN\n", __func__, __LINE__); \
return args; \
} while (0)
#define DBG(fmt, args...) \
pr_err("%s:%-5d: " fmt, __func__, __LINE__, ## args)
#else
#define ENTER do { } while (0)
#define RET(args...) return args
#define DBG(fmt, args...) \
do { \
if (0) \
pr_err(fmt, ##args); \
} while (0)
#endif
#endif /* _BDX__H */