cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/sun/sunhme.h

/* $Id: sunhme.h,v 1.33 2001/08/03 06:23:04 davem Exp $
 * sunhme.h: Definitions for Sparc HME/BigMac 10/100baseT ethernet driver.
 *           Also known as the "Happy Meal".
 *
 * Copyright (C) 1996, 1999 David S. Miller (davem@redhat.com)
 */

#ifndef _SUNHME_H

#define _SUNHME_H

#include <linux/pci.h>

/* Happy Meal global registers. */

#define GREG_SWRESET	0x000UL	
/* Software Reset  */

#define GREG_CFG	0x004UL	
/* Config Register */

#define GREG_STAT	0x108UL	
/* Status          */

#define GREG_IMASK	0x10cUL	
/* Interrupt Mask  */

#define GREG_REG_SIZE	0x110UL

/* Global reset register. */

#define GREG_RESET_ETX         0x01

#define GREG_RESET_ERX         0x02

#define GREG_RESET_ALL         0x03

/* Global config register. */

#define GREG_CFG_BURSTMSK      0x03

#define GREG_CFG_BURST16       0x00

#define GREG_CFG_BURST32       0x01

#define GREG_CFG_BURST64       0x02

#define GREG_CFG_64BIT         0x04

#define GREG_CFG_PARITY        0x08

#define GREG_CFG_RESV          0x10

/* Global status register. */

#define GREG_STAT_GOTFRAME     0x00000001 
/* Received a frame                         */

#define GREG_STAT_RCNTEXP      0x00000002 
/* Receive frame counter expired            */

#define GREG_STAT_ACNTEXP      0x00000004 
/* Align-error counter expired              */

#define GREG_STAT_CCNTEXP      0x00000008 
/* CRC-error counter expired                */

#define GREG_STAT_LCNTEXP      0x00000010 
/* Length-error counter expired             */

#define GREG_STAT_RFIFOVF      0x00000020 
/* Receive FIFO overflow                    */

#define GREG_STAT_CVCNTEXP     0x00000040 
/* Code-violation counter expired           */

#define GREG_STAT_STSTERR      0x00000080 
/* Test error in XIF for SQE                */

#define GREG_STAT_SENTFRAME    0x00000100 
/* Transmitted a frame                      */

#define GREG_STAT_TFIFO_UND    0x00000200 
/* Transmit FIFO underrun                   */

#define GREG_STAT_MAXPKTERR    0x00000400 
/* Max-packet size error                    */

#define GREG_STAT_NCNTEXP      0x00000800 
/* Normal-collision counter expired         */

#define GREG_STAT_ECNTEXP      0x00001000 
/* Excess-collision counter expired         */

#define GREG_STAT_LCCNTEXP     0x00002000 
/* Late-collision counter expired           */

#define GREG_STAT_FCNTEXP      0x00004000 
/* First-collision counter expired          */

#define GREG_STAT_DTIMEXP      0x00008000 
/* Defer-timer expired                      */

#define GREG_STAT_RXTOHOST     0x00010000 
/* Moved from receive-FIFO to host memory   */

#define GREG_STAT_NORXD        0x00020000 
/* No more receive descriptors              */

#define GREG_STAT_RXERR        0x00040000 
/* Error during receive dma                 */

#define GREG_STAT_RXLATERR     0x00080000 
/* Late error during receive dma            */

#define GREG_STAT_RXPERR       0x00100000 
/* Parity error during receive dma          */

#define GREG_STAT_RXTERR       0x00200000 
/* Tag error during receive dma             */

#define GREG_STAT_EOPERR       0x00400000 
/* Transmit descriptor did not have EOP set */

#define GREG_STAT_MIFIRQ       0x00800000 
/* MIF is signaling an interrupt condition  */

#define GREG_STAT_HOSTTOTX     0x01000000 
/* Moved from host memory to transmit-FIFO  */

#define GREG_STAT_TXALL        0x02000000 
/* Transmitted all packets in the tx-fifo   */

#define GREG_STAT_TXEACK       0x04000000 
/* Error during transmit dma                */

#define GREG_STAT_TXLERR       0x08000000 
/* Late error during transmit dma           */

#define GREG_STAT_TXPERR       0x10000000 
/* Parity error during transmit dma         */

#define GREG_STAT_TXTERR       0x20000000 
/* Tag error during transmit dma            */

#define GREG_STAT_SLVERR       0x40000000 
/* PIO access got an error                  */

#define GREG_STAT_SLVPERR      0x80000000 
/* PIO access got a parity error            */

/* All interesting error conditions. */

#define GREG_STAT_ERRORS       0xfc7efefc

/* Global interrupt mask register. */

#define GREG_IMASK_GOTFRAME    0x00000001 
/* Received a frame                         */

#define GREG_IMASK_RCNTEXP     0x00000002 
/* Receive frame counter expired            */

#define GREG_IMASK_ACNTEXP     0x00000004 
/* Align-error counter expired              */

#define GREG_IMASK_CCNTEXP     0x00000008 
/* CRC-error counter expired                */

#define GREG_IMASK_LCNTEXP     0x00000010 
/* Length-error counter expired             */

#define GREG_IMASK_RFIFOVF     0x00000020 
/* Receive FIFO overflow                    */

#define GREG_IMASK_CVCNTEXP    0x00000040 
/* Code-violation counter expired           */

#define GREG_IMASK_STSTERR     0x00000080 
/* Test error in XIF for SQE                */

#define GREG_IMASK_SENTFRAME   0x00000100 
/* Transmitted a frame                      */

#define GREG_IMASK_TFIFO_UND   0x00000200 
/* Transmit FIFO underrun                   */

#define GREG_IMASK_MAXPKTERR   0x00000400 
/* Max-packet size error                    */

#define GREG_IMASK_NCNTEXP     0x00000800 
/* Normal-collision counter expired         */

#define GREG_IMASK_ECNTEXP     0x00001000 
/* Excess-collision counter expired         */

#define GREG_IMASK_LCCNTEXP    0x00002000 
/* Late-collision counter expired           */

#define GREG_IMASK_FCNTEXP     0x00004000 
/* First-collision counter expired          */

#define GREG_IMASK_DTIMEXP     0x00008000 
/* Defer-timer expired                      */

#define GREG_IMASK_RXTOHOST    0x00010000 
/* Moved from receive-FIFO to host memory   */

#define GREG_IMASK_NORXD       0x00020000 
/* No more receive descriptors              */

#define GREG_IMASK_RXERR       0x00040000 
/* Error during receive dma                 */

#define GREG_IMASK_RXLATERR    0x00080000 
/* Late error during receive dma            */

#define GREG_IMASK_RXPERR      0x00100000 
/* Parity error during receive dma          */

#define GREG_IMASK_RXTERR      0x00200000 
/* Tag error during receive dma             */

#define GREG_IMASK_EOPERR      0x00400000 
/* Transmit descriptor did not have EOP set */

#define GREG_IMASK_MIFIRQ      0x00800000 
/* MIF is signaling an interrupt condition  */

#define GREG_IMASK_HOSTTOTX    0x01000000 
/* Moved from host memory to transmit-FIFO  */

#define GREG_IMASK_TXALL       0x02000000 
/* Transmitted all packets in the tx-fifo   */

#define GREG_IMASK_TXEACK      0x04000000 
/* Error during transmit dma                */

#define GREG_IMASK_TXLERR      0x08000000 
/* Late error during transmit dma           */

#define GREG_IMASK_TXPERR      0x10000000 
/* Parity error during transmit dma         */

#define GREG_IMASK_TXTERR      0x20000000 
/* Tag error during transmit dma            */

#define GREG_IMASK_SLVERR      0x40000000 
/* PIO access got an error                  */

#define GREG_IMASK_SLVPERR     0x80000000 
/* PIO access got a parity error            */

/* Happy Meal external transmitter registers. */

#define ETX_PENDING	0x00UL	
/* Transmit pending/wakeup register */

#define ETX_CFG		0x04UL	
/* Transmit config register         */

#define ETX_RING	0x08UL	
/* Transmit ring pointer            */

#define ETX_BBASE	0x0cUL	
/* Transmit buffer base             */

#define ETX_BDISP	0x10UL	
/* Transmit buffer displacement     */

#define ETX_FIFOWPTR	0x14UL	
/* FIFO write ptr                   */

#define ETX_FIFOSWPTR	0x18UL	
/* FIFO write ptr (shadow register) */

#define ETX_FIFORPTR	0x1cUL	
/* FIFO read ptr                    */

#define ETX_FIFOSRPTR	0x20UL	
/* FIFO read ptr (shadow register)  */

#define ETX_FIFOPCNT	0x24UL	
/* FIFO packet counter              */

#define ETX_SMACHINE	0x28UL	
/* Transmitter state machine        */

#define ETX_RSIZE	0x2cUL	
/* Ring descriptor size             */

#define ETX_BPTR	0x30UL	
/* Transmit data buffer ptr         */

#define ETX_REG_SIZE	0x34UL

/* ETX transmit pending register. */

#define ETX_TP_DMAWAKEUP         0x00000001 
/* Restart transmit dma             */

/* ETX config register. */

#define ETX_CFG_DMAENABLE        0x00000001 
/* Enable transmit dma              */

#define ETX_CFG_FIFOTHRESH       0x000003fe 
/* Transmit FIFO threshold          */

#define ETX_CFG_IRQDAFTER        0x00000400 
/* Interrupt after TX-FIFO drained  */

#define ETX_CFG_IRQDBEFORE       0x00000000 
/* Interrupt before TX-FIFO drained */


#define ETX_RSIZE_SHIFT          4

/* Happy Meal external receiver registers. */

#define ERX_CFG		0x00UL	
/* Receiver config register         */

#define ERX_RING	0x04UL	
/* Receiver ring ptr                */

#define ERX_BPTR	0x08UL	
/* Receiver buffer ptr              */

#define ERX_FIFOWPTR	0x0cUL	
/* FIFO write ptr                   */

#define ERX_FIFOSWPTR	0x10UL	
/* FIFO write ptr (shadow register) */

#define ERX_FIFORPTR	0x14UL	
/* FIFO read ptr                    */

#define ERX_FIFOSRPTR	0x18UL	
/* FIFO read ptr (shadow register)  */

#define ERX_SMACHINE	0x1cUL	
/* Receiver state machine           */

#define ERX_REG_SIZE	0x20UL

/* ERX config register. */

#define ERX_CFG_DMAENABLE    0x00000001 
/* Enable receive DMA        */

#define ERX_CFG_RESV1        0x00000006 
/* Unused...                 */

#define ERX_CFG_BYTEOFFSET   0x00000038 
/* Receive first byte offset */

#define ERX_CFG_RESV2        0x000001c0 
/* Unused...                 */

#define ERX_CFG_SIZE32       0x00000000 
/* Receive ring size == 32   */

#define ERX_CFG_SIZE64       0x00000200 
/* Receive ring size == 64   */

#define ERX_CFG_SIZE128      0x00000400 
/* Receive ring size == 128  */

#define ERX_CFG_SIZE256      0x00000600 
/* Receive ring size == 256  */

#define ERX_CFG_RESV3        0x0000f800 
/* Unused...                 */

#define ERX_CFG_CSUMSTART    0x007f0000 
/* Offset of checksum start,
                                         * in halfwords. */

/* I'd like a Big Mac, small fries, small coke, and SparcLinux please. */

#define BMAC_XIFCFG	0x0000UL	
/* XIF config register                */
	/* 0x4-->0x204, reserved */

#define BMAC_TXSWRESET	0x208UL	
/* Transmitter software reset         */

#define BMAC_TXCFG	0x20cUL	
/* Transmitter config register        */

#define BMAC_IGAP1	0x210UL	
/* Inter-packet gap 1                 */

#define BMAC_IGAP2	0x214UL	
/* Inter-packet gap 2                 */

#define BMAC_ALIMIT	0x218UL	
/* Transmit attempt limit             */

#define BMAC_STIME	0x21cUL	
/* Transmit slot time                 */

#define BMAC_PLEN	0x220UL	
/* Size of transmit preamble          */

#define BMAC_PPAT	0x224UL	
/* Pattern for transmit preamble      */

#define BMAC_TXSDELIM	0x228UL	
/* Transmit delimiter                 */

#define BMAC_JSIZE	0x22cUL	
/* Jam size                           */

#define BMAC_TXMAX	0x230UL	
/* Transmit max pkt size              */

#define BMAC_TXMIN	0x234UL	
/* Transmit min pkt size              */

#define BMAC_PATTEMPT	0x238UL	
/* Count of transmit peak attempts    */

#define BMAC_DTCTR	0x23cUL	
/* Transmit defer timer               */

#define BMAC_NCCTR	0x240UL	
/* Transmit normal-collision counter  */

#define BMAC_FCCTR	0x244UL	
/* Transmit first-collision counter   */

#define BMAC_EXCTR	0x248UL	
/* Transmit excess-collision counter  */

#define BMAC_LTCTR	0x24cUL	
/* Transmit late-collision counter    */

#define BMAC_RSEED	0x250UL	
/* Transmit random number seed        */

#define BMAC_TXSMACHINE	0x254UL	
/* Transmit state machine             */
	/* 0x258-->0x304, reserved */

#define BMAC_RXSWRESET	0x308UL	
/* Receiver software reset            */

#define BMAC_RXCFG	0x30cUL	
/* Receiver config register           */

#define BMAC_RXMAX	0x310UL	
/* Receive max pkt size               */

#define BMAC_RXMIN	0x314UL	
/* Receive min pkt size               */

#define BMAC_MACADDR2	0x318UL	
/* Ether address register 2           */

#define BMAC_MACADDR1	0x31cUL	
/* Ether address register 1           */

#define BMAC_MACADDR0	0x320UL	
/* Ether address register 0           */

#define BMAC_FRCTR	0x324UL	
/* Receive frame receive counter      */

#define BMAC_GLECTR	0x328UL	
/* Receive giant-length error counter */

#define BMAC_UNALECTR	0x32cUL	
/* Receive unaligned error counter    */

#define BMAC_RCRCECTR	0x330UL	
/* Receive CRC error counter          */

#define BMAC_RXSMACHINE	0x334UL	
/* Receiver state machine             */

#define BMAC_RXCVALID	0x338UL	
/* Receiver code violation            */
	/* 0x33c, reserved */

#define BMAC_HTABLE3	0x340UL	
/* Hash table 3                       */

#define BMAC_HTABLE2	0x344UL	
/* Hash table 2                       */

#define BMAC_HTABLE1	0x348UL	
/* Hash table 1                       */

#define BMAC_HTABLE0	0x34cUL	
/* Hash table 0                       */

#define BMAC_AFILTER2	0x350UL	
/* Address filter 2                   */

#define BMAC_AFILTER1	0x354UL	
/* Address filter 1                   */

#define BMAC_AFILTER0	0x358UL	
/* Address filter 0                   */

#define BMAC_AFMASK	0x35cUL	
/* Address filter mask                */

#define BMAC_REG_SIZE	0x360UL

/* BigMac XIF config register. */

#define BIGMAC_XCFG_ODENABLE  0x00000001 
/* Output driver enable         */

#define BIGMAC_XCFG_XLBACK    0x00000002 
/* Loopback-mode XIF enable     */

#define BIGMAC_XCFG_MLBACK    0x00000004 
/* Loopback-mode MII enable     */

#define BIGMAC_XCFG_MIIDISAB  0x00000008 
/* MII receive buffer disable   */

#define BIGMAC_XCFG_SQENABLE  0x00000010 
/* SQE test enable              */

#define BIGMAC_XCFG_SQETWIN   0x000003e0 
/* SQE time window              */

#define BIGMAC_XCFG_LANCE     0x00000010 
/* Lance mode enable            */

#define BIGMAC_XCFG_LIPG0     0x000003e0 
/* Lance mode IPG0              */

/* BigMac transmit config register. */

#define BIGMAC_TXCFG_ENABLE   0x00000001 
/* Enable the transmitter       */

#define BIGMAC_TXCFG_SMODE    0x00000020 
/* Enable slow transmit mode    */

#define BIGMAC_TXCFG_CIGN     0x00000040 
/* Ignore transmit collisions   */

#define BIGMAC_TXCFG_FCSOFF   0x00000080 
/* Do not emit FCS              */

#define BIGMAC_TXCFG_DBACKOFF 0x00000100 
/* Disable backoff              */

#define BIGMAC_TXCFG_FULLDPLX 0x00000200 
/* Enable full-duplex           */

#define BIGMAC_TXCFG_DGIVEUP  0x00000400 
/* Don't give up on transmits   */

/* BigMac receive config register. */

#define BIGMAC_RXCFG_ENABLE   0x00000001 
/* Enable the receiver             */

#define BIGMAC_RXCFG_PSTRIP   0x00000020 
/* Pad byte strip enable           */

#define BIGMAC_RXCFG_PMISC    0x00000040 
/* Enable promiscuous mode          */

#define BIGMAC_RXCFG_DERR     0x00000080 
/* Disable error checking          */

#define BIGMAC_RXCFG_DCRCS    0x00000100 
/* Disable CRC stripping           */

#define BIGMAC_RXCFG_REJME    0x00000200 
/* Reject packets addressed to me  */

#define BIGMAC_RXCFG_PGRP     0x00000400 
/* Enable promisc group mode       */

#define BIGMAC_RXCFG_HENABLE  0x00000800 
/* Enable the hash filter          */

#define BIGMAC_RXCFG_AENABLE  0x00001000 
/* Enable the address filter       */

/* These are the "Management Interface" (ie. MIF) registers of the transceiver. */

#define TCVR_BBCLOCK	0x00UL	
/* Bit bang clock register          */

#define TCVR_BBDATA	0x04UL	
/* Bit bang data register           */

#define TCVR_BBOENAB	0x08UL	
/* Bit bang output enable           */

#define TCVR_FRAME	0x0cUL	
/* Frame control/data register      */

#define TCVR_CFG	0x10UL	
/* MIF config register              */

#define TCVR_IMASK	0x14UL	
/* MIF interrupt mask               */

#define TCVR_STATUS	0x18UL	
/* MIF status                       */

#define TCVR_SMACHINE	0x1cUL	
/* MIF state machine                */

#define TCVR_REG_SIZE	0x20UL

/* Frame commands. */

#define FRAME_WRITE           0x50020000

#define FRAME_READ            0x60020000

/* Transceiver config register */

#define TCV_CFG_PSELECT       0x00000001 
/* Select PHY                      */

#define TCV_CFG_PENABLE       0x00000002 
/* Enable MIF polling              */

#define TCV_CFG_BENABLE       0x00000004 
/* Enable the "bit banger" oh baby */

#define TCV_CFG_PREGADDR      0x000000f8 
/* Address of poll register        */

#define TCV_CFG_MDIO0         0x00000100 
/* MDIO zero, data/attached        */

#define TCV_CFG_MDIO1         0x00000200 
/* MDIO one,  data/attached        */

#define TCV_CFG_PDADDR        0x00007c00 
/* Device PHY address polling      */

/* Here are some PHY addresses. */

#define TCV_PADDR_ETX         0          
/* Internal transceiver            */

#define TCV_PADDR_ITX         1          
/* External transceiver            */

/* Transceiver status register */

#define TCV_STAT_BASIC        0xffff0000 
/* The "basic" part                */

#define TCV_STAT_NORMAL       0x0000ffff 
/* The "non-basic" part            */

/* Inside the Happy Meal transceiver is the physical layer, they use an
 * implementations for National Semiconductor, part number DP83840VCE.
 * You can retrieve the data sheets and programming docs for this beast
 * from http://www.national.com/
 *
 * The DP83840 is capable of both 10 and 100Mbps ethernet, in both
 * half and full duplex mode.  It also supports auto negotiation.
 *
 * But.... THIS THING IS A PAIN IN THE ASS TO PROGRAM!
 * Debugging eeprom burnt code is more fun than programming this chip!
 */

/* Generic MII registers defined in linux/mii.h, these below
 * are DP83840 specific.
 */

#define DP83840_CSCONFIG        0x17        
/* CS configuration            */

/* The Carrier Sense config register. */

#define CSCONFIG_RESV1          0x0001  
/* Unused...                   */

#define CSCONFIG_LED4           0x0002  
/* Pin for full-dplx LED4      */

#define CSCONFIG_LED1           0x0004  
/* Pin for conn-status LED1    */

#define CSCONFIG_RESV2          0x0008  
/* Unused...                   */

#define CSCONFIG_TCVDISAB       0x0010  
/* Turns off the transceiver   */

#define CSCONFIG_DFBYPASS       0x0020  
/* Bypass disconnect function  */

#define CSCONFIG_GLFORCE        0x0040  
/* Good link force for 100mbps */

#define CSCONFIG_CLKTRISTATE    0x0080  
/* Tristate 25m clock          */

#define CSCONFIG_RESV3          0x0700  
/* Unused...                   */

#define CSCONFIG_ENCODE         0x0800  
/* 1=MLT-3, 0=binary           */

#define CSCONFIG_RENABLE        0x1000  
/* Repeater mode enable        */

#define CSCONFIG_TCDISABLE      0x2000  
/* Disable timeout counter     */

#define CSCONFIG_RESV4          0x4000  
/* Unused...                   */

#define CSCONFIG_NDISABLE       0x8000  
/* Disable NRZI                */

/* Happy Meal descriptor rings and such.
 * All descriptor rings must be aligned on a 2K boundary.
 * All receive buffers must be 64 byte aligned.
 * Always write the address first before setting the ownership
 * bits to avoid races with the hardware scanning the ring.
 */

typedef u32 __bitwise hme32;


struct happy_meal_rxd {
	
hme32 rx_flags;
	
hme32 rx_addr;
};


#define RXFLAG_OWN         0x80000000 
/* 1 = hardware, 0 = software */

#define RXFLAG_OVERFLOW    0x40000000 
/* 1 = buffer overflow        */

#define RXFLAG_SIZE        0x3fff0000 
/* Size of the buffer         */

#define RXFLAG_CSUM        0x0000ffff 
/* HW computed checksum       */


struct happy_meal_txd {
	
hme32 tx_flags;
	
hme32 tx_addr;
};


#define TXFLAG_OWN         0x80000000 
/* 1 = hardware, 0 = software */

#define TXFLAG_SOP         0x40000000 
/* 1 = start of packet        */

#define TXFLAG_EOP         0x20000000 
/* 1 = end of packet          */

#define TXFLAG_CSENABLE    0x10000000 
/* 1 = enable hw-checksums    */

#define TXFLAG_CSLOCATION  0x0ff00000 
/* Where to stick the csum    */

#define TXFLAG_CSBUFBEGIN  0x000fc000 
/* Where to begin checksum    */

#define TXFLAG_SIZE        0x00003fff 
/* Size of the packet         */


#define TX_RING_SIZE       32         
/* Must be >16 and <255, multiple of 16  */

#define RX_RING_SIZE       32         
/* see ERX_CFG_SIZE* for possible values */

#if (TX_RING_SIZE < 16 || TX_RING_SIZE > 256 || (TX_RING_SIZE % 16) != 0)
#error TX_RING_SIZE holds illegal value
#endif


#define TX_RING_MAXSIZE    256

#define RX_RING_MAXSIZE    256

/* We use a 14 byte offset for checksum computation. */
#if (RX_RING_SIZE == 32)

#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE32|((14/2)<<16))
#else
#if (RX_RING_SIZE == 64)

#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE64|((14/2)<<16))
#else
#if (RX_RING_SIZE == 128)

#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE128|((14/2)<<16))
#else
#if (RX_RING_SIZE == 256)

#define ERX_CFG_DEFAULT(off) (ERX_CFG_DMAENABLE|((off)<<3)|ERX_CFG_SIZE256|((14/2)<<16))
#else
#error RX_RING_SIZE holds illegal value
#endif
#endif
#endif
#endif


#define NEXT_RX(num)       (((num) + 1) & (RX_RING_SIZE - 1))

#define NEXT_TX(num)       (((num) + 1) & (TX_RING_SIZE - 1))

#define PREV_RX(num)       (((num) - 1) & (RX_RING_SIZE - 1))

#define PREV_TX(num)       (((num) - 1) & (TX_RING_SIZE - 1))


#define TX_BUFFS_AVAIL(hp)                                    \
        (((hp)->tx_old <= (hp)->tx_new) ?                     \
          (hp)->tx_old + (TX_RING_SIZE - 1) - (hp)->tx_new :  \
                            (hp)->tx_old - (hp)->tx_new - 1)


#define RX_OFFSET          2

#define RX_BUF_ALLOC_SIZE  (1546 + RX_OFFSET + 64)


#define RX_COPY_THRESHOLD  256


struct hmeal_init_block {
	
struct happy_meal_rxd happy_meal_rxd[RX_RING_MAXSIZE];
	
struct happy_meal_txd happy_meal_txd[TX_RING_MAXSIZE];
};


#define hblock_offset(mem, elem) \
((__u32)((unsigned long)(&(((struct hmeal_init_block *)0)->mem[elem]))))

/* Now software state stuff. */

enum happy_transceiver {
	
external = 0,
	
internal = 1,
	
none     = 2,
};

/* Timer state engine. */

enum happy_timer_state {
	
arbwait  = 0,  /* Waiting for auto negotiation to complete.          */
	
lupwait  = 1,  /* Auto-neg complete, awaiting link-up status.        */
	
ltrywait = 2,  /* Forcing try of all modes, from fastest to slowest. */
	
asleep   = 3,  /* Time inactive.                                     */
};

struct quattro;

/* Happy happy, joy joy! */

struct happy_meal {
	
void __iomem	*gregs;			/* Happy meal global registers       */
	
struct hmeal_init_block  *happy_block;	/* RX and TX descriptors (CPU addr)  */

#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
	
u32 (*read_desc32)(hme32 *);
	
void (*write_txd)(struct happy_meal_txd *, u32, u32);
	
void (*write_rxd)(struct happy_meal_rxd *, u32, u32);
#endif

	/* This is either an platform_device or a pci_dev. */
	
void			  *happy_dev;
	
struct device		  *dma_dev;

	
spinlock_t		  happy_lock;

	
struct sk_buff           *rx_skbs[RX_RING_SIZE];
	
struct sk_buff           *tx_skbs[TX_RING_SIZE];

	



int rx_new, tx_new, rx_old, tx_old;

	
struct net_device_stats	  net_stats;      /* Statistical counters              */

#if defined(CONFIG_SBUS) && defined(CONFIG_PCI)
	
u32 (*read32)(void __iomem *);
	
void (*write32)(void __iomem *, u32);
#endif

	
void __iomem	*etxregs;        /* External transmitter regs        */
	
void __iomem	*erxregs;        /* External receiver regs           */
	
void __iomem	*bigmacregs;     /* BIGMAC core regs                  */
	
void __iomem	*tcvregs;        /* MIF transceiver regs             */

	
dma_addr_t                hblock_dvma;    /* DVMA visible address happy block  */
	
unsigned int              happy_flags;    /* Driver state flags                */
	
int                       irq;
	
enum happy_transceiver    tcvr_type;      /* Kind of transceiver in use        */
	
unsigned int              happy_bursts;   /* Get your mind out of the gutter   */
	
unsigned int              paddr;          /* PHY address for transceiver       */
	
unsigned short            hm_revision;    /* Happy meal revision               */
	
unsigned short            sw_bmcr;        /* SW copy of BMCR                   */
	
unsigned short            sw_bmsr;        /* SW copy of BMSR                   */
	
unsigned short            sw_physid1;     /* SW copy of PHYSID1                */
	
unsigned short            sw_physid2;     /* SW copy of PHYSID2                */
	
unsigned short            sw_advertise;   /* SW copy of ADVERTISE              */
	
unsigned short            sw_lpa;         /* SW copy of LPA                    */
	
unsigned short            sw_expansion;   /* SW copy of EXPANSION              */
	
unsigned short            sw_csconfig;    /* SW copy of CSCONFIG               */
	
unsigned int              auto_speed;     /* Auto-nego link speed              */
        
unsigned int              forced_speed;   /* Force mode link speed             */
	
unsigned int              poll_data;      /* MIF poll data                     */
	
unsigned int              poll_flag;      /* MIF poll flag                     */
	
unsigned int              linkcheck;      /* Have we checked the link yet?     */
	
unsigned int              lnkup;          /* Is the link up as far as we know? */
	
unsigned int              lnkdown;        /* Trying to force the link down?    */
	
unsigned int              lnkcnt;         /* Counter for link-up attempts.     */
	
struct timer_list         happy_timer;    /* To watch the link when coming up. */
	
enum happy_timer_state    timer_state;    /* State of the auto-neg timer.      */
	
unsigned int              timer_ticks;    /* Number of clicks at each state.   */

	
struct net_device	 *dev;		/* Backpointer                       */
	
struct quattro		 *qfe_parent;	/* For Quattro cards                 */
	
int			  qfe_ent;	/* Which instance on quattro         */
};

/* Here are the happy flags. */

#define HFLAG_POLL                0x00000001      
/* We are doing MIF polling          */

#define HFLAG_FENABLE             0x00000002      
/* The MII frame is enabled          */

#define HFLAG_LANCE               0x00000004      
/* We are using lance-mode           */

#define HFLAG_RXENABLE            0x00000008      
/* Receiver is enabled               */

#define HFLAG_AUTO                0x00000010      
/* Using auto-negotiation, 0 = force */

#define HFLAG_FULL                0x00000020      
/* Full duplex enable                */

#define HFLAG_MACFULL             0x00000040      
/* Using full duplex in the MAC      */

#define HFLAG_POLLENABLE          0x00000080      
/* Actually try MIF polling          */

#define HFLAG_RXCV                0x00000100      
/* XXX RXCV ENABLE                   */

#define HFLAG_INIT                0x00000200      
/* Init called at least once         */

#define HFLAG_LINKUP              0x00000400      
/* 1 = Link is up                    */

#define HFLAG_PCI                 0x00000800      
/* PCI based Happy Meal              */

#define HFLAG_QUATTRO		  0x00001000      
/* On QFE/Quattro card         */


#define HFLAG_20_21  (HFLAG_POLLENABLE | HFLAG_FENABLE)

#define HFLAG_NOT_A0 (HFLAG_POLLENABLE | HFLAG_FENABLE | HFLAG_LANCE | HFLAG_RXCV)

/* Support for QFE/Quattro cards. */

struct quattro {
	
struct net_device	*happy_meals[4];

	/* This is either a sbus_dev or a pci_dev. */
	
void			*quattro_dev;

	
struct quattro		*next;

	/* PROM ranges, if any. */
#ifdef CONFIG_SBUS
	
struct linux_prom_ranges  ranges[8];
#endif
	
int			  nranges;
};

/* We use this to acquire receive skb's that we can DMA directly into. */

#define ALIGNED_RX_SKB_ADDR(addr) \
        ((((unsigned long)(addr) + (64UL - 1UL)) & ~(64UL - 1UL)) - (unsigned long)(addr))

#define happy_meal_alloc_skb(__length, __gfp_flags) \
({      struct sk_buff *__skb; \
        __skb = alloc_skb((__length) + 64, (__gfp_flags)); \
        if(__skb) { \
                int __offset = (int) ALIGNED_RX_SKB_ADDR(__skb->data); \
                if(__offset) \
                        skb_reserve(__skb, __offset); \
        } \
        __skb; \
})

#endif /* !(_SUNHME_H) */

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)176292.25%1145.83%
Linus Torvalds1005.24%28.33%
David S. Miller321.68%520.83%
Al Viro90.47%14.17%
François Romieu30.16%14.17%
Lucas De Marchi10.05%14.17%
Michael Hayes10.05%14.17%
Michael S. Tsirkin10.05%14.17%
Grant C. Likely10.05%14.17%
Total1910100.00%24100.00%
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