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