1 files changed, 564 insertions, 0 deletions

diff --git a/drivers/net/tehuti.h b/drivers/net/tehuti.h
new file mode 100644
index 000000000000..efd170f451b4
--- /dev/null
+++ b/drivers/net/tehuti.h
@@ -0,0 +1,564 @@
+/*
+ * 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/version.h>
+#include <linux/interrupt.h>
+#include <linux/vmalloc.h>
+#include <asm/byteorder.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
+
+#define MIN(x, y)  ((x) < (y) ? (x) : (y))
+
+#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 DMA_64BIT_MASK
+#   define DMA_64BIT_MASK  0xffffffffffffffffULL
+#endif
+
+#ifndef DMA_32BIT_MASK
+#   define DMA_32BIT_MASK  0x00000000ffffffffULL
+#endif
+
+#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;
+        struct vlan_group *vlgrp;
+
+        /* 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 net_device_stats net_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_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 */
+} __attribute__ ((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] promiscous 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 ERR(fmt, args...) printk(KERN_ERR fmt, ## args)
+#define DBG2(fmt, args...)      \
+        printk(KERN_ERR  "%s:%-5d: " fmt, __FUNCTION__, __LINE__, ## args)
+
+#define BDX_ASSERT(x) BUG_ON(x)
+
+#ifdef DEBUG
+
+#define ENTER          do { \
+        printk(KERN_ERR  "%s:%-5d: ENTER\n", __FUNCTION__, __LINE__); \
+} while (0)
+
+#define RET(args...)   do { \
+        printk(KERN_ERR  "%s:%-5d: RETURN\n", __FUNCTION__, __LINE__); \
+return args; } while (0)
+
+#define DBG(fmt, args...)       \
+        printk(KERN_ERR  "%s:%-5d: " fmt, __FUNCTION__, __LINE__, ## args)
+#else
+#define ENTER         do {  } while (0)
+#define RET(args...)   return args
+#define DBG(fmt, args...)   do {  } while (0)
+#endif
+
+#endif /* _BDX__H */