- 根目录:
- drivers
- net
- ethernet
- sun
- sungem.h
/* $Id: sungem.h,v 1.10.2.4 2002/03/11 08:54:48 davem Exp $
* sungem.h: Definitions for Sun GEM ethernet driver.
*
* Copyright (C) 2000 David S. Miller (davem@redhat.com)
*/
#ifndef _SUNGEM_H
#define _SUNGEM_H
/* Global Registers */
#define GREG_SEBSTATE 0x0000UL /* SEB State Register */
#define GREG_CFG 0x0004UL /* Configuration Register */
#define GREG_STAT 0x000CUL /* Status Register */
#define GREG_IMASK 0x0010UL /* Interrupt Mask Register */
#define GREG_IACK 0x0014UL /* Interrupt ACK Register */
#define GREG_STAT2 0x001CUL /* Alias of GREG_STAT */
#define GREG_PCIESTAT 0x1000UL /* PCI Error Status Register */
#define GREG_PCIEMASK 0x1004UL /* PCI Error Mask Register */
#define GREG_BIFCFG 0x1008UL /* BIF Configuration Register */
#define GREG_BIFDIAG 0x100CUL /* BIF Diagnostics Register */
#define GREG_SWRST 0x1010UL /* Software Reset Register */
/* Global SEB State Register */
#define GREG_SEBSTATE_ARB 0x00000003 /* State of Arbiter */
#define GREG_SEBSTATE_RXWON 0x00000004 /* RX won internal arbitration */
/* Global Configuration Register */
#define GREG_CFG_IBURST 0x00000001 /* Infinite Burst */
#define GREG_CFG_TXDMALIM 0x0000003e /* TX DMA grant limit */
#define GREG_CFG_RXDMALIM 0x000007c0 /* RX DMA grant limit */
#define GREG_CFG_RONPAULBIT 0x00000800 /* Use mem read multiple for PCI read
* after infinite burst (Apple) */
#define GREG_CFG_ENBUG2FIX 0x00001000 /* Fix Rx hang after overflow */
/* Global Interrupt Status Register.
*
* Reading this register automatically clears bits 0 through 6.
* This auto-clearing does not occur when the alias at GREG_STAT2
* is read instead. The rest of the interrupt bits only clear when
* the secondary interrupt status register corresponding to that
* bit is read (ie. if GREG_STAT_PCS is set, it will be cleared by
* reading PCS_ISTAT).
*/
#define GREG_STAT_TXINTME 0x00000001 /* TX INTME frame transferred */
#define GREG_STAT_TXALL 0x00000002 /* All TX frames transferred */
#define GREG_STAT_TXDONE 0x00000004 /* One TX frame transferred */
#define GREG_STAT_RXDONE 0x00000010 /* One RX frame arrived */
#define GREG_STAT_RXNOBUF 0x00000020 /* No free RX buffers available */
#define GREG_STAT_RXTAGERR 0x00000040 /* RX tag framing is corrupt */
#define GREG_STAT_PCS 0x00002000 /* PCS signalled interrupt */
#define GREG_STAT_TXMAC 0x00004000 /* TX MAC signalled interrupt */
#define GREG_STAT_RXMAC 0x00008000 /* RX MAC signalled interrupt */
#define GREG_STAT_MAC 0x00010000 /* MAC Control signalled irq */
#define GREG_STAT_MIF 0x00020000 /* MIF signalled interrupt */
#define GREG_STAT_PCIERR 0x00040000 /* PCI Error interrupt */
#define GREG_STAT_TXNR 0xfff80000 /* == TXDMA_TXDONE reg val */
#define GREG_STAT_TXNR_SHIFT 19
#define GREG_STAT_ABNORMAL (GREG_STAT_RXNOBUF | GREG_STAT_RXTAGERR | \
GREG_STAT_PCS | GREG_STAT_TXMAC | GREG_STAT_RXMAC | \
GREG_STAT_MAC | GREG_STAT_MIF | GREG_STAT_PCIERR)
#define GREG_STAT_NAPI (GREG_STAT_TXALL | GREG_STAT_TXINTME | \
GREG_STAT_RXDONE | GREG_STAT_ABNORMAL)
/* The layout of GREG_IMASK and GREG_IACK is identical to GREG_STAT.
* Bits set in GREG_IMASK will prevent that interrupt type from being
* signalled to the cpu. GREG_IACK can be used to clear specific top-level
* interrupt conditions in GREG_STAT, ie. it only works for bits 0 through 6.
* Setting the bit will clear that interrupt, clear bits will have no effect
* on GREG_STAT.
*/
/* Global PCI Error Status Register */
#define GREG_PCIESTAT_BADACK 0x00000001 /* No ACK64# during ABS64 cycle */
#define GREG_PCIESTAT_DTRTO 0x00000002 /* Delayed transaction timeout */
#define GREG_PCIESTAT_OTHER 0x00000004 /* Other PCI error, check cfg space */
/* The layout of the GREG_PCIEMASK is identical to that of GREG_PCIESTAT.
* Bits set in GREG_PCIEMASK will prevent that interrupt type from being
* signalled to the cpu.
*/
/* Global BIF Configuration Register */
#define GREG_BIFCFG_SLOWCLK 0x00000001 /* Set if PCI runs < 25Mhz */
#define GREG_BIFCFG_B64DIS 0x00000002 /* Disable 64bit wide data cycle*/
#define GREG_BIFCFG_M66EN 0x00000004 /* Set if on 66Mhz PCI segment */
/* Global BIF Diagnostics Register */
#define GREG_BIFDIAG_BURSTSM 0x007f0000 /* PCI Burst state machine */
#define GREG_BIFDIAG_BIFSM 0xff000000 /* BIF state machine */
/* Global Software Reset Register.
*
* This register is used to perform a global reset of the RX and TX portions
* of the GEM asic. Setting the RX or TX reset bit will start the reset.
* The driver _MUST_ poll these bits until they clear. One may not attempt
* to program any other part of GEM until the bits clear.
*/
#define GREG_SWRST_TXRST 0x00000001 /* TX Software Reset */
#define GREG_SWRST_RXRST 0x00000002 /* RX Software Reset */
#define GREG_SWRST_RSTOUT 0x00000004 /* Force RST# pin active */
#define GREG_SWRST_CACHESIZE 0x00ff0000 /* RIO only: cache line size */
#define GREG_SWRST_CACHE_SHIFT 16
/* TX DMA Registers */
#define TXDMA_KICK 0x2000UL /* TX Kick Register */
#define TXDMA_CFG 0x2004UL /* TX Configuration Register */
#define TXDMA_DBLOW 0x2008UL /* TX Desc. Base Low */
#define TXDMA_DBHI 0x200CUL /* TX Desc. Base High */
#define TXDMA_FWPTR 0x2014UL /* TX FIFO Write Pointer */
#define TXDMA_FSWPTR 0x2018UL /* TX FIFO Shadow Write Pointer */
#define TXDMA_FRPTR 0x201CUL /* TX FIFO Read Pointer */
#define TXDMA_FSRPTR 0x2020UL /* TX FIFO Shadow Read Pointer */
#define TXDMA_PCNT 0x2024UL /* TX FIFO Packet Counter */
#define TXDMA_SMACHINE 0x2028UL /* TX State Machine Register */
#define TXDMA_DPLOW 0x2030UL /* TX Data Pointer Low */
#define TXDMA_DPHI 0x2034UL /* TX Data Pointer High */
#define TXDMA_TXDONE 0x2100UL /* TX Completion Register */
#define TXDMA_FADDR 0x2104UL /* TX FIFO Address */
#define TXDMA_FTAG 0x2108UL /* TX FIFO Tag */
#define TXDMA_DLOW 0x210CUL /* TX FIFO Data Low */
#define TXDMA_DHIT1 0x2110UL /* TX FIFO Data HighT1 */
#define TXDMA_DHIT0 0x2114UL /* TX FIFO Data HighT0 */
#define TXDMA_FSZ 0x2118UL /* TX FIFO Size */
/* TX Kick Register.
*
* This 13-bit register is programmed by the driver to hold the descriptor
* entry index which follows the last valid transmit descriptor.
*/
/* TX Completion Register.
*
* This 13-bit register is updated by GEM to hold to descriptor entry index
* which follows the last descriptor already processed by GEM. Note that
* this value is mirrored in GREG_STAT which eliminates the need to even
* access this register in the driver during interrupt processing.
*/
/* TX Configuration Register.
*
* Note that TXDMA_CFG_FTHRESH, the TX FIFO Threshold, is an obsolete feature
* that was meant to be used with jumbo packets. It should be set to the
* maximum value of 0x4ff, else one risks getting TX MAC Underrun errors.
*/
#define TXDMA_CFG_ENABLE 0x00000001 /* Enable TX DMA channel */
#define TXDMA_CFG_RINGSZ 0x0000001e /* TX descriptor ring size */
#define TXDMA_CFG_RINGSZ_32 0x00000000 /* 32 TX descriptors */
#define TXDMA_CFG_RINGSZ_64 0x00000002 /* 64 TX descriptors */
#define TXDMA_CFG_RINGSZ_128 0x00000004 /* 128 TX descriptors */
#define TXDMA_CFG_RINGSZ_256 0x00000006 /* 256 TX descriptors */
#define TXDMA_CFG_RINGSZ_512 0x00000008 /* 512 TX descriptors */
#define TXDMA_CFG_RINGSZ_1K 0x0000000a /* 1024 TX descriptors */
#define TXDMA_CFG_RINGSZ_2K 0x0000000c /* 2048 TX descriptors */
#define TXDMA_CFG_RINGSZ_4K 0x0000000e /* 4096 TX descriptors */
#define TXDMA_CFG_RINGSZ_8K 0x00000010 /* 8192 TX descriptors */
#define TXDMA_CFG_PIOSEL 0x00000020 /* Enable TX FIFO PIO from cpu */
#define TXDMA_CFG_FTHRESH 0x001ffc00 /* TX FIFO Threshold, obsolete */
#define TXDMA_CFG_PMODE 0x00200000 /* TXALL irq means TX FIFO empty*/
/* TX Descriptor Base Low/High.
*
* These two registers store the 53 most significant bits of the base address
* of the TX descriptor table. The 11 least significant bits are always
* zero. As a result, the TX descriptor table must be 2K aligned.
*/
/* The rest of the TXDMA_* registers are for diagnostics and debug, I will document
* them later. -DaveM
*/
/* WakeOnLan Registers */
#define WOL_MATCH0 0x3000UL
#define WOL_MATCH1 0x3004UL
#define WOL_MATCH2 0x3008UL
#define WOL_MCOUNT 0x300CUL
#define WOL_WAKECSR 0x3010UL
/* WOL Match count register
*/
#define WOL_MCOUNT_N 0x00000010
#define WOL_MCOUNT_M 0x00000000 /* 0 << 8 */
#define WOL_WAKECSR_ENABLE 0x00000001
#define WOL_WAKECSR_MII 0x00000002
#define WOL_WAKECSR_SEEN 0x00000004
#define WOL_WAKECSR_FILT_UCAST 0x00000008
#define WOL_WAKECSR_FILT_MCAST 0x00000010
#define WOL_WAKECSR_FILT_BCAST 0x00000020
#define WOL_WAKECSR_FILT_SEEN 0x00000040
/* Receive DMA Registers */
#define RXDMA_CFG 0x4000UL /* RX Configuration Register */
#define RXDMA_DBLOW 0x4004UL /* RX Descriptor Base Low */
#define RXDMA_DBHI 0x4008UL /* RX Descriptor Base High */
#define RXDMA_FWPTR 0x400CUL /* RX FIFO Write Pointer */
#define RXDMA_FSWPTR 0x4010UL /* RX FIFO Shadow Write Pointer */
#define RXDMA_FRPTR 0x4014UL /* RX FIFO Read Pointer */
#define RXDMA_PCNT 0x4018UL /* RX FIFO Packet Counter */
#define RXDMA_SMACHINE 0x401CUL /* RX State Machine Register */
#define RXDMA_PTHRESH 0x4020UL /* Pause Thresholds */
#define RXDMA_DPLOW 0x4024UL /* RX Data Pointer Low */
#define RXDMA_DPHI 0x4028UL /* RX Data Pointer High */
#define RXDMA_KICK 0x4100UL /* RX Kick Register */
#define RXDMA_DONE 0x4104UL /* RX Completion Register */
#define RXDMA_BLANK 0x4108UL /* RX Blanking Register */
#define RXDMA_FADDR 0x410CUL /* RX FIFO Address */
#define RXDMA_FTAG 0x4110UL /* RX FIFO Tag */
#define RXDMA_DLOW 0x4114UL /* RX FIFO Data Low */
#define RXDMA_DHIT1 0x4118UL /* RX FIFO Data HighT0 */
#define RXDMA_DHIT0 0x411CUL /* RX FIFO Data HighT1 */
#define RXDMA_FSZ 0x4120UL /* RX FIFO Size */
/* RX Configuration Register. */
#define RXDMA_CFG_ENABLE 0x00000001 /* Enable RX DMA channel */
#define RXDMA_CFG_RINGSZ 0x0000001e /* RX descriptor ring size */
#define RXDMA_CFG_RINGSZ_32 0x00000000 /* - 32 entries */
#define RXDMA_CFG_RINGSZ_64 0x00000002 /* - 64 entries */
#define RXDMA_CFG_RINGSZ_128 0x00000004 /* - 128 entries */
#define RXDMA_CFG_RINGSZ_256 0x00000006 /* - 256 entries */
#define RXDMA_CFG_RINGSZ_512 0x00000008 /* - 512 entries */
#define RXDMA_CFG_RINGSZ_1K 0x0000000a /* - 1024 entries */
#define RXDMA_CFG_RINGSZ_2K 0x0000000c /* - 2048 entries */
#define RXDMA_CFG_RINGSZ_4K 0x0000000e /* - 4096 entries */
#define RXDMA_CFG_RINGSZ_8K 0x00000010 /* - 8192 entries */
#define RXDMA_CFG_RINGSZ_BDISAB 0x00000020 /* Disable RX desc batching */
#define RXDMA_CFG_FBOFF 0x00001c00 /* Offset of first data byte */
#define RXDMA_CFG_CSUMOFF 0x000fe000 /* Skip bytes before csum calc */
#define RXDMA_CFG_FTHRESH 0x07000000 /* RX FIFO dma start threshold */
#define RXDMA_CFG_FTHRESH_64 0x00000000 /* - 64 bytes */
#define RXDMA_CFG_FTHRESH_128 0x01000000 /* - 128 bytes */
#define RXDMA_CFG_FTHRESH_256 0x02000000 /* - 256 bytes */
#define RXDMA_CFG_FTHRESH_512 0x03000000 /* - 512 bytes */
#define RXDMA_CFG_FTHRESH_1K 0x04000000 /* - 1024 bytes */
#define RXDMA_CFG_FTHRESH_2K 0x05000000 /* - 2048 bytes */
/* RX Descriptor Base Low/High.
*
* These two registers store the 53 most significant bits of the base address
* of the RX descriptor table. The 11 least significant bits are always
* zero. As a result, the RX descriptor table must be 2K aligned.
*/
/* RX PAUSE Thresholds.
*
* These values determine when XOFF and XON PAUSE frames are emitted by
* GEM. The thresholds measure RX FIFO occupancy in units of 64 bytes.
*/
#define RXDMA_PTHRESH_OFF 0x000001ff /* XOFF emitted w/FIFO > this */
#define RXDMA_PTHRESH_ON 0x001ff000 /* XON emitted w/FIFO < this */
/* RX Kick Register.
*
* This 13-bit register is written by the host CPU and holds the last
* valid RX descriptor number plus one. This is, if 'N' is written to
* this register, it means that all RX descriptors up to but excluding
* 'N' are valid.
*
* The hardware requires that RX descriptors are posted in increments
* of 4. This means 'N' must be a multiple of four. For the best
* performance, the first new descriptor being posted should be (PCI)
* cache line aligned.
*/
/* RX Completion Register.
*
* This 13-bit register is updated by GEM to indicate which RX descriptors
* have already been used for receive frames. All descriptors up to but
* excluding the value in this register are ready to be processed. GEM
* updates this register value after the RX FIFO empties completely into
* the RX descriptor's buffer, but before the RX_DONE bit is set in the
* interrupt status register.
*/
/* RX Blanking Register. */
#define RXDMA_BLANK_IPKTS 0x000001ff /* RX_DONE asserted after this
* many packets received since
* previous RX_DONE.
*/
#define RXDMA_BLANK_ITIME 0x000ff000 /* RX_DONE asserted after this
* many clocks (measured in 2048
* PCI clocks) were counted since
* the previous RX_DONE.
*/
/* RX FIFO Size.
*
* This 11-bit read-only register indicates how large, in units of 64-bytes,
* the RX FIFO is. The driver uses this to properly configure the RX PAUSE
* thresholds.
*/
/* The rest of the RXDMA_* registers are for diagnostics and debug, I will document
* them later. -DaveM
*/
/* MAC Registers */
#define MAC_TXRST 0x6000UL /* TX MAC Software Reset Command*/
#define MAC_RXRST 0x6004UL /* RX MAC Software Reset Command*/
#define MAC_SNDPAUSE 0x6008UL /* Send Pause Command Register */
#define MAC_TXSTAT 0x6010UL /* TX MAC Status Register */
#define MAC_RXSTAT 0x6014UL /* RX MAC Status Register */
#define MAC_CSTAT 0x6018UL /* MAC Control Status Register */
#define MAC_TXMASK 0x6020UL /* TX MAC Mask Register */
#define MAC_RXMASK 0x6024UL /* RX MAC Mask Register */
#define MAC_MCMASK 0x6028UL /* MAC Control Mask Register */
#define MAC_TXCFG 0x6030UL /* TX MAC Configuration Register*/
#define MAC_RXCFG 0x6034UL /* RX MAC Configuration Register*/
#define MAC_MCCFG 0x6038UL /* MAC Control Config Register */
#define MAC_XIFCFG 0x603CUL /* XIF Configuration Register */
#define MAC_IPG0 0x6040UL /* InterPacketGap0 Register */
#define MAC_IPG1 0x6044UL /* InterPacketGap1 Register */
#define MAC_IPG2 0x6048UL /* InterPacketGap2 Register */
#define MAC_STIME 0x604CUL /* SlotTime Register */
#define MAC_MINFSZ 0x6050UL /* MinFrameSize Register */
#define MAC_MAXFSZ 0x6054UL /* MaxFrameSize Register */
#define MAC_PASIZE 0x6058UL /* PA Size Register */
#define MAC_JAMSIZE 0x605CUL /* JamSize Register */
#define MAC_ATTLIM 0x6060UL /* Attempt Limit Register */
#define MAC_MCTYPE 0x6064UL /* MAC Control Type Register */
#define MAC_ADDR0 0x6080UL /* MAC Address 0 Register */
#define MAC_ADDR1 0x6084UL /* MAC Address 1 Register */
#define MAC_ADDR2 0x6088UL /* MAC Address 2 Register */
#define MAC_ADDR3 0x608CUL /* MAC Address 3 Register */
#define MAC_ADDR4 0x6090UL /* MAC Address 4 Register */
#define MAC_ADDR5 0x6094UL /* MAC Address 5 Register */
#define MAC_ADDR6 0x6098UL /* MAC Address 6 Register */
#define MAC_ADDR7 0x609CUL /* MAC Address 7 Register */
#define MAC_ADDR8 0x60A0UL /* MAC Address 8 Register */
#define MAC_AFILT0 0x60A4UL /* Address Filter 0 Register */
#define MAC_AFILT1 0x60A8UL /* Address Filter 1 Register */
#define MAC_AFILT2 0x60ACUL /* Address Filter 2 Register */
#define MAC_AF21MSK 0x60B0UL /* Address Filter 2&1 Mask Reg */
#define MAC_AF0MSK 0x60B4UL /* Address Filter 0 Mask Reg */
#define MAC_HASH0 0x60C0UL /* Hash Table 0 Register */
#define MAC_HASH1 0x60C4UL /* Hash Table 1 Register */
#define MAC_HASH2 0x60C8UL /* Hash Table 2 Register */
#define MAC_HASH3 0x60CCUL /* Hash Table 3 Register */
#define MAC_HASH4 0x60D0UL /* Hash Table 4 Register */
#define MAC_HASH5 0x60D4UL /* Hash Table 5 Register */
#define MAC_HASH6 0x60D8UL /* Hash Table 6 Register */
#define MAC_HASH7 0x60DCUL /* Hash Table 7 Register */
#define MAC_HASH8 0x60E0UL /* Hash Table 8 Register */
#define MAC_HASH9 0x60E4UL /* Hash Table 9 Register */
#define MAC_HASH10 0x60E8UL /* Hash Table 10 Register */
#define MAC_HASH11 0x60ECUL /* Hash Table 11 Register */
#define MAC_HASH12 0x60F0UL /* Hash Table 12 Register */
#define MAC_HASH13 0x60F4UL /* Hash Table 13 Register */
#define MAC_HASH14 0x60F8UL /* Hash Table 14 Register */
#define MAC_HASH15 0x60FCUL /* Hash Table 15 Register */
#define MAC_NCOLL 0x6100UL /* Normal Collision Counter */
#define MAC_FASUCC 0x6104UL /* First Attmpt. Succ Coll Ctr. */
#define MAC_ECOLL 0x6108UL /* Excessive Collision Counter */
#define MAC_LCOLL 0x610CUL /* Late Collision Counter */
#define MAC_DTIMER 0x6110UL /* Defer Timer */
#define MAC_PATMPS 0x6114UL /* Peak Attempts Register */
#define MAC_RFCTR 0x6118UL /* Receive Frame Counter */
#define MAC_LERR 0x611CUL /* Length Error Counter */
#define MAC_AERR 0x6120UL /* Alignment Error Counter */
#define MAC_FCSERR 0x6124UL /* FCS Error Counter */
#define MAC_RXCVERR 0x6128UL /* RX code Violation Error Ctr */
#define MAC_RANDSEED 0x6130UL /* Random Number Seed Register */
#define MAC_SMACHINE 0x6134UL /* State Machine Register */
/* TX MAC Software Reset Command. */
#define MAC_TXRST_CMD 0x00000001 /* Start sw reset, self-clears */
/* RX MAC Software Reset Command. */
#define MAC_RXRST_CMD 0x00000001 /* Start sw reset, self-clears */
/* Send Pause Command. */
#define MAC_SNDPAUSE_TS 0x0000ffff /* The pause_time operand used in
* Send_Pause and flow-control
* handshakes.
*/
#define MAC_SNDPAUSE_SP 0x00010000 /* Setting this bit instructs the MAC
* to send a Pause Flow Control
* frame onto the network.
*/
/* TX MAC Status Register. */
#define MAC_TXSTAT_XMIT 0x00000001 /* Frame Transmitted */
#define MAC_TXSTAT_URUN 0x00000002 /* TX Underrun */
#define MAC_TXSTAT_MPE 0x00000004 /* Max Packet Size Error */
#define MAC_TXSTAT_NCE 0x00000008 /* Normal Collision Cntr Expire */
#define MAC_TXSTAT_ECE 0x00000010 /* Excess Collision Cntr Expire */
#define MAC_TXSTAT_LCE 0x00000020 /* Late Collision Cntr Expire */
#define MAC_TXSTAT_FCE 0x00000040 /* First Collision Cntr Expire */
#define MAC_TXSTAT_DTE 0x00000080 /* Defer Timer Expire */
#define MAC_TXSTAT_PCE 0x00000100 /* Peak Attempts Cntr Expire */
/* RX MAC Status Register. */
#define MAC_RXSTAT_RCV 0x00000001 /* Frame Received */
#define MAC_RXSTAT_OFLW 0x00000002 /* Receive Overflow */
#define MAC_RXSTAT_FCE 0x00000004 /* Frame Cntr Expire */
#define MAC_RXSTAT_ACE 0x00000008 /* Align Error Cntr Expire */
#define MAC_RXSTAT_CCE 0x00000010 /* CRC Error Cntr Expire */
#define MAC_RXSTAT_LCE 0x00000020 /* Length Error Cntr Expire */
#define MAC_RXSTAT_VCE 0x00000040 /* Code Violation Cntr Expire */
/* MAC Control Status Register. */
#define MAC_CSTAT_PRCV 0x00000001 /* Pause Received */
#define MAC_CSTAT_PS 0x00000002 /* Paused State */
#define MAC_CSTAT_NPS 0x00000004 /* Not Paused State */
#define MAC_CSTAT_PTR 0xffff0000 /* Pause Time Received */
/* The layout of the MAC_{TX,RX,C}MASK registers is identical to that
* of MAC_{TX,RX,C}STAT. Bits set in MAC_{TX,RX,C}MASK will prevent
* that interrupt type from being signalled to front end of GEM. For
* the interrupt to actually get sent to the cpu, it is necessary to
* properly set the appropriate GREG_IMASK_{TX,RX,}MAC bits as well.
*/
/* TX MAC Configuration Register.
*
* NOTE: The TX MAC Enable bit must be cleared and polled until
* zero before any other bits in this register are changed.
*
* Also, enabling the Carrier Extension feature of GEM is
* a 3 step process 1) Set TX Carrier Extension 2) Set
* RX Carrier Extension 3) Set Slot Time to 0x200. This
* mode must be enabled when in half-duplex at 1Gbps, else
* it must be disabled.
*/
#define MAC_TXCFG_ENAB 0x00000001 /* TX MAC Enable */
#define MAC_TXCFG_ICS 0x00000002 /* Ignore Carrier Sense */
#define MAC_TXCFG_ICOLL 0x00000004 /* Ignore Collisions */
#define MAC_TXCFG_EIPG0 0x00000008 /* Enable IPG0 */
#define MAC_TXCFG_NGU 0x00000010 /* Never Give Up */
#define MAC_TXCFG_NGUL 0x00000020 /* Never Give Up Limit */
#define MAC_TXCFG_NBO 0x00000040 /* No Backoff */
#define MAC_TXCFG_SD 0x00000080 /* Slow Down */
#define MAC_TXCFG_NFCS 0x00000100 /* No FCS */
#define MAC_TXCFG_TCE 0x00000200 /* TX Carrier Extension */
/* RX MAC Configuration Register.
*
* NOTE: The RX MAC Enable bit must be cleared and polled until
* zero before any other bits in this register are changed.
*
* Similar rules apply to the Hash Filter Enable bit when
* programming the hash table registers, and the Address Filter
* Enable bit when programming the address filter registers.
*/
#define MAC_RXCFG_ENAB 0x00000001 /* RX MAC Enable */
#define MAC_RXCFG_SPAD 0x00000002 /* Strip Pad */
#define MAC_RXCFG_SFCS 0x00000004 /* Strip FCS */
#define MAC_RXCFG_PROM 0x00000008 /* Promiscuous Mode */
#define MAC_RXCFG_PGRP 0x00000010 /* Promiscuous Group */
#define MAC_RXCFG_HFE 0x00000020 /* Hash Filter Enable */
#define MAC_RXCFG_AFE 0x00000040 /* Address Filter Enable */
#define MAC_RXCFG_DDE 0x00000080 /* Disable Discard on Error */
#define MAC_RXCFG_RCE 0x00000100 /* RX Carrier Extension */
/* MAC Control Config Register. */
#define MAC_MCCFG_SPE 0x00000001 /* Send Pause Enable */
#define MAC_MCCFG_RPE 0x00000002 /* Receive Pause Enable */
#define MAC_MCCFG_PMC 0x00000004 /* Pass MAC Control */
/* XIF Configuration Register.
*
* NOTE: When leaving or entering loopback mode, a global hardware
* init of GEM should be performed.
*/
#define MAC_XIFCFG_OE 0x00000001 /* MII TX Output Driver Enable */
#define MAC_XIFCFG_LBCK 0x00000002 /* Loopback TX to RX */
#define MAC_XIFCFG_DISE 0x00000004 /* Disable RX path during TX */
#define MAC_XIFCFG_GMII 0x00000008 /* Use GMII clocks + datapath */
#define MAC_XIFCFG_MBOE 0x00000010 /* Controls MII_BUF_EN pin */
#define MAC_XIFCFG_LLED 0x00000020 /* Force LINKLED# active (low) */
#define MAC_XIFCFG_FLED 0x00000040 /* Force FDPLXLED# active (low) */
/* InterPacketGap0 Register. This 8-bit value is used as an extension
* to the InterPacketGap1 Register. Specifically it contributes to the
* timing of the RX-to-TX IPG. This value is ignored and presumed to
* be zero for TX-to-TX IPG calculations and/or when the Enable IPG0 bit
* is cleared in the TX MAC Configuration Register.
*
* This value in this register in terms of media byte time.
*
* Recommended value: 0x00
*/
/* InterPacketGap1 Register. This 8-bit value defines the first 2/3
* portion of the Inter Packet Gap.
*
* This value in this register in terms of media byte time.
*
* Recommended value: 0x08
*/
/* InterPacketGap2 Register. This 8-bit value defines the second 1/3
* portion of the Inter Packet Gap.
*
* This value in this register in terms of media byte time.
*
* Recommended value: 0x04
*/
/* Slot Time Register. This 10-bit value specifies the slot time
* parameter in units of media byte time. It determines the physical
* span of the network.
*
* Recommended value: 0x40
*/
/* Minimum Frame Size Register. This 10-bit register specifies the
* smallest sized frame the TXMAC will send onto the medium, and the
* RXMAC will receive from the medium.
*
* Recommended value: 0x40
*/
/* Maximum Frame and Burst Size Register.
*
* This register specifies two things. First it specifies the maximum
* sized frame the TXMAC will send and the RXMAC will recognize as
* valid. Second, it specifies the maximum run length of a burst of
* packets sent in half-duplex gigabit modes.
*
* Recommended value: 0x200005ee
*/
#define MAC_MAXFSZ_MFS 0x00007fff /* Max Frame Size */
#define MAC_MAXFSZ_MBS 0x7fff0000 /* Max Burst Size */
/* PA Size Register. This 10-bit register specifies the number of preamble
* bytes which will be transmitted at the beginning of each frame. A
* value of two or greater should be programmed here.
*
* Recommended value: 0x07
*/
/* Jam Size Register. This 4-bit register specifies the duration of
* the jam in units of media byte time.
*
* Recommended value: 0x04
*/
/* Attempts Limit Register. This 8-bit register specifies the number
* of attempts that the TXMAC will make to transmit a frame, before it
* resets its Attempts Counter. After reaching the Attempts Limit the
* TXMAC may or may not drop the frame, as determined by the NGU
* (Never Give Up) and NGUL (Never Give Up Limit) bits in the TXMAC
* Configuration Register.
*
* Recommended value: 0x10
*/
/* MAX Control Type Register. This 16-bit register specifies the
* "type" field of a MAC Control frame. The TXMAC uses this field to
* encapsulate the MAC Control frame for transmission, and the RXMAC
* uses it for decoding valid MAC Control frames received from the
* network.
*
* Recommended value: 0x8808
*/
/* MAC Address Registers. Each of these registers specify the
* ethernet MAC of the interface, 16-bits at a time. Register
* 0 specifies bits [47:32], register 1 bits [31:16], and register
* 2 bits [15:0].
*
* Registers 3 through and including 5 specify an alternate
* MAC address for the interface.
*
* Registers 6 through and including 8 specify the MAC Control
* Address, which must be the reserved multicast address for MAC
* Control frames.
*
* Example: To program primary station address a:b:c:d:e:f into
* the chip.
* MAC_Address_2 = (a << 8) | b
* MAC_Address_1 = (c << 8) | d
* MAC_Address_0 = (e << 8) | f
*/
/* Address Filter Registers. Registers 0 through 2 specify bit
* fields [47:32] through [15:0], respectively, of the address
* filter. The Address Filter 2&1 Mask Register denotes the 8-bit
* nibble mask for Address Filter Registers 2 and 1. The Address
* Filter 0 Mask Register denotes the 16-bit mask for the Address
* Filter Register 0.
*/
/* Hash Table Registers. Registers 0 through 15 specify bit fields
* [255:240] through [15:0], respectively, of the hash table.
*/
/* Statistics Registers. All of these registers are 16-bits and
* track occurrences of a specific event. GEM can be configured
* to interrupt the host cpu when any of these counters overflow.
* They should all be explicitly initialized to zero when the interface
* is brought up.
*/
/* Random Number Seed Register. This 10-bit value is used as the
* RNG seed inside GEM for the CSMA/CD backoff algorithm. It is
* recommended to program this register to the 10 LSB of the
* interfaces MAC address.
*/
/* Pause Timer, read-only. This 16-bit timer is used to time the pause
* interval as indicated by a received pause flow control frame.
* A non-zero value in this timer indicates that the MAC is currently in
* the paused state.
*/
/* MIF Registers */
#define MIF_BBCLK 0x6200UL /* MIF Bit-Bang Clock */
#define MIF_BBDATA 0x6204UL /* MIF Bit-Band Data */
#define MIF_BBOENAB 0x6208UL /* MIF Bit-Bang Output Enable */
#define MIF_FRAME 0x620CUL /* MIF Frame/Output Register */
#define MIF_CFG 0x6210UL /* MIF Configuration Register */
#define MIF_MASK 0x6214UL /* MIF Mask Register */
#define MIF_STATUS 0x6218UL /* MIF Status Register */
#define MIF_SMACHINE 0x621CUL /* MIF State Machine Register */
/* MIF Bit-Bang Clock. This 1-bit register is used to generate the
* MDC clock waveform on the MII Management Interface when the MIF is
* programmed in the "Bit-Bang" mode. Writing a '1' after a '0' into
* this register will create a rising edge on the MDC, while writing
* a '0' after a '1' will create a falling edge. For every bit that
* is transferred on the management interface, both edges have to be
* generated.
*/
/* MIF Bit-Bang Data. This 1-bit register is used to generate the
* outgoing data (MDO) on the MII Management Interface when the MIF
* is programmed in the "Bit-Bang" mode. The daa will be steered to the
* appropriate MDIO based on the state of the PHY_Select bit in the MIF
* Configuration Register.
*/
/* MIF Big-Band Output Enable. THis 1-bit register is used to enable
* ('1') or disable ('0') the I-directional driver on the MII when the
* MIF is programmed in the "Bit-Bang" mode. The MDIO should be enabled
* when data bits are transferred from the MIF to the transceiver, and it
* should be disabled when the interface is idle or when data bits are
* transferred from the transceiver to the MIF (data portion of a read
* instruction). Only one MDIO will be enabled at a given time, depending
* on the state of the PHY_Select bit in the MIF Configuration Register.
*/
/* MIF Configuration Register. This 15-bit register controls the operation
* of the MIF.
*/
#define MIF_CFG_PSELECT 0x00000001 /* Xcvr slct: 0=mdio0 1=mdio1 */
#define MIF_CFG_POLL 0x00000002 /* Enable polling mechanism */
#define MIF_CFG_BBMODE 0x00000004 /* 1=bit-bang 0=frame mode */
#define MIF_CFG_PRADDR 0x000000f8 /* Xcvr poll register address */
#define MIF_CFG_MDI0 0x00000100 /* MDIO_0 present or read-bit */
#define MIF_CFG_MDI1 0x00000200 /* MDIO_1 present or read-bit */
#define MIF_CFG_PPADDR 0x00007c00 /* Xcvr poll PHY address */
/* MIF Frame/Output Register. This 32-bit register allows the host to
* communicate with a transceiver in frame mode (as opposed to big-bang
* mode). Writes by the host specify an instrution. After being issued
* the host must poll this register for completion. Also, after
* completion this register holds the data returned by the transceiver
* if applicable.
*/
#define MIF_FRAME_ST 0xc0000000 /* STart of frame */
#define MIF_FRAME_OP 0x30000000 /* OPcode */
#define MIF_FRAME_PHYAD 0x0f800000 /* PHY ADdress */
#define MIF_FRAME_REGAD 0x007c0000 /* REGister ADdress */
#define MIF_FRAME_TAMSB 0x00020000 /* Turn Around MSB */
#define MIF_FRAME_TALSB 0x00010000 /* Turn Around LSB */
#define MIF_FRAME_DATA 0x0000ffff /* Instruction Payload */
/* MIF Status Register. This register reports status when the MIF is
* operating in the poll mode. The poll status field is auto-clearing
* on read.
*/
#define MIF_STATUS_DATA 0xffff0000 /* Live image of XCVR reg */
#define MIF_STATUS_STAT 0x0000ffff /* Which bits have changed */
/* MIF Mask Register. This 16-bit register is used when in poll mode
* to say which bits of the polled register will cause an interrupt
* when changed.
*/
/* PCS/Serialink Registers */
#define PCS_MIICTRL 0x9000UL /* PCS MII Control Register */
#define PCS_MIISTAT 0x9004UL /* PCS MII Status Register */
#define PCS_MIIADV 0x9008UL /* PCS MII Advertisement Reg */
#define PCS_MIILP 0x900CUL /* PCS MII Link Partner Ability */
#define PCS_CFG 0x9010UL /* PCS Configuration Register */
#define PCS_SMACHINE 0x9014UL /* PCS State Machine Register */
#define PCS_ISTAT 0x9018UL /* PCS Interrupt Status Reg */
#define PCS_DMODE 0x9050UL /* Datapath Mode Register */
#define PCS_SCTRL 0x9054UL /* Serialink Control Register */
#define PCS_SOS 0x9058UL /* Shared Output Select Reg */
#define PCS_SSTATE 0x905CUL /* Serialink State Register */
/* PCD MII Control Register. */
#define PCS_MIICTRL_SPD 0x00000040 /* Read as one, writes ignored */
#define PCS_MIICTRL_CT 0x00000080 /* Force COL signal active */
#define PCS_MIICTRL_DM 0x00000100 /* Duplex mode, forced low */
#define PCS_MIICTRL_RAN 0x00000200 /* Restart auto-neg, self clear */
#define PCS_MIICTRL_ISO 0x00000400 /* Read as zero, writes ignored */
#define PCS_MIICTRL_PD 0x00000800 /* Read as zero, writes ignored */
#define PCS_MIICTRL_ANE 0x00001000 /* Auto-neg enable */
#define PCS_MIICTRL_SS 0x00002000 /* Read as zero, writes ignored */
#define PCS_MIICTRL_WB 0x00004000 /* Wrapback, loopback at 10-bit
* input side of Serialink
*/
#define PCS_MIICTRL_RST 0x00008000 /* Resets PCS, self clearing */
/* PCS MII Status Register. */
#define PCS_MIISTAT_EC 0x00000001 /* Ext Capability: Read as zero */
#define PCS_MIISTAT_JD 0x00000002 /* Jabber Detect: Read as zero */
#define PCS_MIISTAT_LS 0x00000004 /* Link Status: 1=up 0=down */
#define PCS_MIISTAT_ANA 0x00000008 /* Auto-neg Ability, always 1 */
#define PCS_MIISTAT_RF 0x00000010 /* Remote Fault */
#define PCS_MIISTAT_ANC 0x00000020 /* Auto-neg complete */
#define PCS_MIISTAT_ES 0x00000100 /* Extended Status, always 1 */
/* PCS MII Advertisement Register. */
#define PCS_MIIADV_FD 0x00000020 /* Advertise Full Duplex */
#define PCS_MIIADV_HD 0x00000040 /* Advertise Half Duplex */
#define PCS_MIIADV_SP 0x00000080 /* Advertise Symmetric Pause */
#define PCS_MIIADV_AP 0x00000100 /* Advertise Asymmetric Pause */
#define PCS_MIIADV_RF 0x00003000 /* Remote Fault */
#define PCS_MIIADV_ACK 0x00004000 /* Read-only */
#define PCS_MIIADV_NP 0x00008000 /* Next-page, forced low */
/* PCS MII Link Partner Ability Register. This register is equivalent
* to the Link Partnet Ability Register of the standard MII register set.
* It's layout corresponds to the PCS MII Advertisement Register.
*/
/* PCS Configuration Register. */
#define PCS_CFG_ENABLE 0x00000001 /* Must be zero while changing
* PCS MII advertisement reg.
*/
#define PCS_CFG_SDO 0x00000002 /* Signal detect override */
#define PCS_CFG_SDL 0x00000004 /* Signal detect active low */
#define PCS_CFG_JS 0x00000018 /* Jitter-study:
* 0 = normal operation
* 1 = high-frequency test pattern
* 2 = low-frequency test pattern
* 3 = reserved
*/
#define PCS_CFG_TO 0x00000020 /* 10ms auto-neg timer override */
/* PCS Interrupt Status Register. This register is self-clearing
* when read.
*/
#define PCS_ISTAT_LSC 0x00000004 /* Link Status Change */
/* Datapath Mode Register. */
#define PCS_DMODE_SM 0x00000001 /* 1 = use internal Serialink */
#define PCS_DMODE_ESM 0x00000002 /* External SERDES mode */
#define PCS_DMODE_MGM 0x00000004 /* MII/GMII mode */
#define PCS_DMODE_GMOE 0x00000008 /* GMII Output Enable */
/* Serialink Control Register.
*
* NOTE: When in SERDES mode, the loopback bit has inverse logic.
*/
#define PCS_SCTRL_LOOP 0x00000001 /* Loopback enable */
#define PCS_SCTRL_ESCD 0x00000002 /* Enable sync char detection */
#define PCS_SCTRL_LOCK 0x00000004 /* Lock to reference clock */
#define PCS_SCTRL_EMP 0x00000018 /* Output driver emphasis */
#define PCS_SCTRL_STEST 0x000001c0 /* Self test patterns */
#define PCS_SCTRL_PDWN 0x00000200 /* Software power-down */
#define PCS_SCTRL_RXZ 0x00000c00 /* PLL input to Serialink */
#define PCS_SCTRL_RXP 0x00003000 /* PLL input to Serialink */
#define PCS_SCTRL_TXZ 0x0000c000 /* PLL input to Serialink */
#define PCS_SCTRL_TXP 0x00030000 /* PLL input to Serialink */
/* Shared Output Select Register. For test and debug, allows multiplexing
* test outputs into the PROM address pins. Set to zero for normal
* operation.
*/
#define PCS_SOS_PADDR 0x00000003 /* PROM Address */
/* PROM Image Space */
#define PROM_START 0x100000UL /* Expansion ROM run time access*/
#define PROM_SIZE 0x0fffffUL /* Size of ROM */
#define PROM_END 0x200000UL /* End of ROM */
/* MII definitions missing from mii.h */
#define BMCR_SPD2 0x0040 /* Gigabit enable? (bcm5411) */
#define LPA_PAUSE 0x0400
/* More PHY registers (specific to Broadcom models) */
/* MII BCM5201 MULTIPHY interrupt register */
#define MII_BCM5201_INTERRUPT 0x1A
#define MII_BCM5201_INTERRUPT_INTENABLE 0x4000
#define MII_BCM5201_AUXMODE2 0x1B
#define MII_BCM5201_AUXMODE2_LOWPOWER 0x0008
#define MII_BCM5201_MULTIPHY 0x1E
/* MII BCM5201 MULTIPHY register bits */
#define MII_BCM5201_MULTIPHY_SERIALMODE 0x0002
#define MII_BCM5201_MULTIPHY_SUPERISOLATE 0x0008
/* MII BCM5400 1000-BASET Control register */
#define MII_BCM5400_GB_CONTROL 0x09
#define MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP 0x0200
/* MII BCM5400 AUXCONTROL register */
#define MII_BCM5400_AUXCONTROL 0x18
#define MII_BCM5400_AUXCONTROL_PWR10BASET 0x0004
/* MII BCM5400 AUXSTATUS register */
#define MII_BCM5400_AUXSTATUS 0x19
#define MII_BCM5400_AUXSTATUS_LINKMODE_MASK 0x0700
#define MII_BCM5400_AUXSTATUS_LINKMODE_SHIFT 8
/* When it can, GEM internally caches 4 aligned TX descriptors
* at a time, so that it can use full cacheline DMA reads.
*
* Note that unlike HME, there is no ownership bit in the descriptor
* control word. The same functionality is obtained via the TX-Kick
* and TX-Complete registers. As a result, GEM need not write back
* updated values to the TX descriptor ring, it only performs reads.
*
* Since TX descriptors are never modified by GEM, the driver can
* use the buffer DMA address as a place to keep track of allocated
* DMA mappings for a transmitted packet.
*/
struct gem_txd {
__le64 control_word;
__le64 buffer;
};
#define TXDCTRL_BUFSZ 0x0000000000007fffULL /* Buffer Size */
#define TXDCTRL_CSTART 0x00000000001f8000ULL /* CSUM Start Offset */
#define TXDCTRL_COFF 0x000000001fe00000ULL /* CSUM Stuff Offset */
#define TXDCTRL_CENAB 0x0000000020000000ULL /* CSUM Enable */
#define TXDCTRL_EOF 0x0000000040000000ULL /* End of Frame */
#define TXDCTRL_SOF 0x0000000080000000ULL /* Start of Frame */
#define TXDCTRL_INTME 0x0000000100000000ULL /* "Interrupt Me" */
#define TXDCTRL_NOCRC 0x0000000200000000ULL /* No CRC Present */
/* GEM requires that RX descriptors are provided four at a time,
* aligned. Also, the RX ring may not wrap around. This means that
* there will be at least 4 unused descriptor entries in the middle
* of the RX ring at all times.
*
* Similar to HME, GEM assumes that it can write garbage bytes before
* the beginning of the buffer and right after the end in order to DMA
* whole cachelines.
*
* Unlike for TX, GEM does update the status word in the RX descriptors
* when packets arrive. Therefore an ownership bit does exist in the
* RX descriptors. It is advisory, GEM clears it but does not check
* it in any way. So when buffers are posted to the RX ring (via the
* RX Kick register) by the driver it must make sure the buffers are
* truly ready and that the ownership bits are set properly.
*
* Even though GEM modifies the RX descriptors, it guarantees that the
* buffer DMA address field will stay the same when it performs these
* updates. Therefore it can be used to keep track of DMA mappings
* by the host driver just as in the TX descriptor case above.
*/
struct gem_rxd {
__le64 status_word;
__le64 buffer;
};
#define RXDCTRL_TCPCSUM 0x000000000000ffffULL /* TCP Pseudo-CSUM */
#define RXDCTRL_BUFSZ 0x000000007fff0000ULL /* Buffer Size */
#define RXDCTRL_OWN 0x0000000080000000ULL /* GEM owns this entry */
#define RXDCTRL_HASHVAL 0x0ffff00000000000ULL /* Hash Value */
#define RXDCTRL_HPASS 0x1000000000000000ULL /* Passed Hash Filter */
#define RXDCTRL_ALTMAC 0x2000000000000000ULL /* Matched ALT MAC */
#define RXDCTRL_BAD 0x4000000000000000ULL /* Frame has bad CRC */
#define RXDCTRL_FRESH(gp) \
((((RX_BUF_ALLOC_SIZE(gp) - RX_OFFSET) << 16) & RXDCTRL_BUFSZ) | \
RXDCTRL_OWN)
#define TX_RING_SIZE 128
#define RX_RING_SIZE 128
#if TX_RING_SIZE == 32
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_32
#elif TX_RING_SIZE == 64
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_64
#elif TX_RING_SIZE == 128
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_128
#elif TX_RING_SIZE == 256
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_256
#elif TX_RING_SIZE == 512
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_512
#elif TX_RING_SIZE == 1024
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_1K
#elif TX_RING_SIZE == 2048
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_2K
#elif TX_RING_SIZE == 4096
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_4K
#elif TX_RING_SIZE == 8192
#define TXDMA_CFG_BASE TXDMA_CFG_RINGSZ_8K
#else
#error TX_RING_SIZE value is illegal...
#endif
#if RX_RING_SIZE == 32
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_32
#elif RX_RING_SIZE == 64
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_64
#elif RX_RING_SIZE == 128
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_128
#elif RX_RING_SIZE == 256
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_256
#elif RX_RING_SIZE == 512
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_512
#elif RX_RING_SIZE == 1024
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_1K
#elif RX_RING_SIZE == 2048
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_2K
#elif RX_RING_SIZE == 4096
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_4K
#elif RX_RING_SIZE == 8192
#define RXDMA_CFG_BASE RXDMA_CFG_RINGSZ_8K
#else
#error RX_RING_SIZE is illegal...
#endif
#define NEXT_TX(N) (((N) + 1) & (TX_RING_SIZE - 1))
#define NEXT_RX(N) (((N) + 1) & (RX_RING_SIZE - 1))
#define TX_BUFFS_AVAIL(GP) \
(((GP)->tx_old <= (GP)->tx_new) ? \
(GP)->tx_old + (TX_RING_SIZE - 1) - (GP)->tx_new : \
(GP)->tx_old - (GP)->tx_new - 1)
#define RX_OFFSET 2
#define RX_BUF_ALLOC_SIZE(gp) ((gp)->rx_buf_sz + 28 + RX_OFFSET + 64)
#define RX_COPY_THRESHOLD 256
#if TX_RING_SIZE < 128
#define INIT_BLOCK_TX_RING_SIZE 128
#else
#define INIT_BLOCK_TX_RING_SIZE TX_RING_SIZE
#endif
#if RX_RING_SIZE < 128
#define INIT_BLOCK_RX_RING_SIZE 128
#else
#define INIT_BLOCK_RX_RING_SIZE RX_RING_SIZE
#endif
struct gem_init_block {
struct gem_txd txd[INIT_BLOCK_TX_RING_SIZE];
struct gem_rxd rxd[INIT_BLOCK_RX_RING_SIZE];
};
enum gem_phy_type {
phy_mii_mdio0,
phy_mii_mdio1,
phy_serialink,
phy_serdes,
};
enum link_state {
link_down = 0, /* No link, will retry */
link_aneg, /* Autoneg in progress */
link_force_try, /* Try Forced link speed */
link_force_ret, /* Forced mode worked, retrying autoneg */
link_force_ok, /* Stay in forced mode */
link_up /* Link is up */
};
struct gem {
void __iomem *regs;
int rx_new, rx_old;
int tx_new, tx_old;
unsigned int has_wol : 1; /* chip supports wake-on-lan */
unsigned int asleep_wol : 1; /* was asleep with WOL enabled */
int cell_enabled;
u32 msg_enable;
u32 status;
struct napi_struct napi;
int tx_fifo_sz;
int rx_fifo_sz;
int rx_pause_off;
int rx_pause_on;
int rx_buf_sz;
u64 pause_entered;
u16 pause_last_time_recvd;
u32 mac_rx_cfg;
u32 swrst_base;
int want_autoneg;
int last_forced_speed;
enum link_state lstate;
struct timer_list link_timer;
int timer_ticks;
int wake_on_lan;
struct work_struct reset_task;
volatile int reset_task_pending;
enum gem_phy_type phy_type;
struct mii_phy phy_mii;
int mii_phy_addr;
struct gem_init_block *init_block;
struct sk_buff *rx_skbs[RX_RING_SIZE];
struct sk_buff *tx_skbs[TX_RING_SIZE];
dma_addr_t gblock_dvma;
struct pci_dev *pdev;
struct net_device *dev;
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_SPARC)
struct device_node *of_node;
#endif
};
#define found_mii_phy(gp) ((gp->phy_type == phy_mii_mdio0 || gp->phy_type == phy_mii_mdio1) && \
gp->phy_mii.def && gp->phy_mii.def->ops)
#endif /* _SUNGEM_H */