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224c243ab7
freebsd-skq/sys/dev/gem/if_gemreg.h
marius 224c243ab7 - Initialize the ifnet structure, especially if_dname, before probing 
the PHYs as some PHY drivers use it (but probably shouldn't). How
  gem(4) has worked with brgphy(4) on powerpc without this so far is
  unclear to me.
- Introduce a dying flag which is set during detach and checked in
  gem_ioctl() in order to prevent active BPF listeners to clear
  promiscuous mode which may lead to the tick callout being restarted
  which will trigger a panic once it's actually gone.
- In gem_stop() reset rather than just disable the transmitter and
  receiver in order to ensure we're not unloading DMA maps still in
  use by the hardware. [1]
- The blanking time is specified in PCI clocks so we should use twice
  the value when operating at 66MHz.
- Spell some 2 as ETHER_ALIGN and a 19 as GEM_STATUS_TX_COMPLETION_SHFT
  to make the actual intentions clear.
- As we don't unload the peak attempts counter ignore its overflow
  interrupts.
- Remove a stale setting of a variable to GEM_TD_INTERRUPT_ME which
  isn't used afterwards.
- For optimum performance increment the TX kick register in multiples
  of 4 if possible as suggested by the documentation.
- Partially revert r164931; drivers should only clear the watchdog
  timer if all outstanding TX descriptors are done.
- Fix some debugging strings.
- Add a missing BUS_DMASYNC_POSTWRITE in gem_rint().
- As the error paths in the interrupt handler are generally unlikely
  predict them as false.
- Add support for the SBus version of the GEM controller. [2]
- Add some lock assertions.
- Improve some comments.
- Fix some more or less cosmetic issues in the code of the PCI front-end.
- Change some softc members to be unsigned where more appropriate and
  remove unused ones.

Approved by:	re (kib)
Obtained from:	NetBSD (partially) [2], OpenBSD [1]
MFC after:	2 weeks
2009-06-23 20:36:59 +00:00

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/*-
* Copyright (C) 2001 Eduardo Horvath.
* All rights reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: NetBSD: gemreg.h,v 1.9 2006/11/24 13:01:07 martin Exp
*
* $FreeBSD$
*/
#ifndef _IF_GEMREG_H
#define _IF_GEMREG_H
/* register definitions for Apple GMAC, Sun ERI and Sun GEM */
/*
* First bank: this registers live at the start of the PCI
* mapping, and at the start of the second bank of the SBus
* version.
*/
#define GEM_SEB_STATE 0x0000 /* SEB state reg, R/O */
#define GEM_CONFIG 0x0004 /* config reg */
#define GEM_STATUS 0x000c /* status reg */
/* Note: Reading the status reg clears bits 0-6. */
#define GEM_INTMASK 0x0010
#define GEM_INTACK 0x0014 /* Interrupt acknowledge, W/O */
#define GEM_STATUS_ALIAS 0x001c
/* Bits in GEM_SEB register */
#define GEM_SEB_ARB 0x00000002 /* Arbitration status */
#define GEM_SEB_RXWON 0x00000004
/* Bits in GEM_CONFIG register */
#define GEM_CONFIG_BURST_64 0x00000000 /* maximum burst size 64KB */
#define GEM_CONFIG_BURST_INF 0x00000001 /* infinite for entire packet */
#define GEM_CONFIG_TXDMA_LIMIT 0x0000003e
#define GEM_CONFIG_RXDMA_LIMIT 0x000007c0
/* GEM_CONFIG_RONPAULBIT and GEM_CONFIG_BUG2FIX are Apple only. */
#define GEM_CONFIG_RONPAULBIT 0x00000800 /* after infinite burst use */
/* memory read multiple for */
/* PCI commands */
#define GEM_CONFIG_BUG2FIX 0x00001000 /* fix RX hang after overflow */
#define GEM_CONFIG_TXDMA_LIMIT_SHIFT 1
#define GEM_CONFIG_RXDMA_LIMIT_SHIFT 6
/* Top part of GEM_STATUS has TX completion information */
#define GEM_STATUS_TX_COMPLETION_MASK 0xfff80000 /* TX completion reg. */
#define GEM_STATUS_TX_COMPLETION_SHFT 19
/*
* Interrupt bits, for both the GEM_STATUS and GEM_INTMASK regs
* Bits 0-6 auto-clear when read.
*/
#define GEM_INTR_TX_INTME 0x00000001 /* Frame w/INTME bit set sent */
#define GEM_INTR_TX_EMPTY 0x00000002 /* TX ring empty */
#define GEM_INTR_TX_DONE 0x00000004 /* TX complete */
#define GEM_INTR_RX_DONE 0x00000010 /* Got a packet */
#define GEM_INTR_RX_NOBUF 0x00000020
#define GEM_INTR_RX_TAG_ERR 0x00000040
#define GEM_INTR_PERR 0x00000080 /* Parity error */
#define GEM_INTR_PCS 0x00002000 /* Physical Code Sub-layer */
#define GEM_INTR_TX_MAC 0x00004000
#define GEM_INTR_RX_MAC 0x00008000
#define GEM_INTR_MAC_CONTROL 0x00010000 /* MAC control interrupt */
#define GEM_INTR_MIF 0x00020000
#define GEM_INTR_BERR 0x00040000 /* Bus error interrupt */
#define GEM_INTR_BITS "\177\020" \
"b\0INTME\0b\1TXEMPTY\0b\2TXDONE\0" \
"b\4RXDONE\0b\5RXNOBUF\0b\6RX_TAG_ERR\0" \
"b\xdPCS\0b\xeTXMAC\0b\xfRXMAC\0" \
"b\x10MAC_CONTROL\0b\x11MIF\0b\x12IBERR\0\0"
/*
* Second bank: this registers live at offset 0x1000 of the PCI
* mapping, and at the start of the first bank of the SBus
* version.
*/
#define GEM_PCI_BANK2_OFFSET 0x1000
#define GEM_PCI_BANK2_SIZE 0x14
/* This is the same as the GEM_STATUS reg but reading it does not clear bits. */
#define GEM_PCI_ERROR_STATUS 0x0000 /* PCI error status */
#define GEM_PCI_ERROR_MASK 0x0004 /* PCI error mask */
#define GEM_PCI_BIF_CONFIG 0x0008 /* PCI BIF configuration */
#define GEM_PCI_BIF_DIAG 0x000c /* PCI BIF diagnostic */
#define GEM_SBUS_BIF_RESET 0x0000 /* SBus BIF only software reset */
#define GEM_SBUS_CONFIG 0x0004 /* SBus IO configuration */
#define GEM_SBUS_STATUS 0x0008 /* SBus IO status */
#define GEM_SBUS_REVISION 0x000c /* SBus revision ID */
#define GEM_RESET 0x0010 /* software reset */
/* GEM_PCI_ERROR_STATUS and GEM_PCI_ERROR_MASK error bits */
#define GEM_PCI_ERR_STAT_BADACK 0x00000001 /* No ACK64# */
#define GEM_PCI_ERR_STAT_DTRTO 0x00000002 /* Delayed xaction timeout */
#define GEM_PCI_ERR_STAT_OTHERS 0x00000004
#define GEM_PCI_ERR_BITS "\177\020b\0ACKBAD\0b\1DTRTO\0b\2OTHER\0\0"
/* GEM_PCI_BIF_CONFIG register bits */
#define GEM_PCI_BIF_CNF_SLOWCLK 0x00000001 /* Parity error timing */
#define GEM_PCI_BIF_CNF_HOST_64 0x00000002 /* 64-bit host */
#define GEM_PCI_BIF_CNF_B64D_DS 0x00000004 /* no 64-bit data cycle */
#define GEM_PCI_BIF_CNF_M66EN 0x00000008
#define GEM_PCI_BIF_CNF_BITS "\177\020b\0SLOWCLK\0b\1HOST64\0" \
"b\2B64DIS\0b\3M66EN\0\0"
/* GEM_PCI_BIF_DIAG register bits */
#define GEN_PCI_BIF_DIAG_BC_SM 0x007f0000 /* burst ctrl. state machine */
#define GEN_PCI_BIF_DIAG_SM 0xff000000 /* BIF state machine */
/* Bits in GEM_SBUS_CONFIG register */
#define GEM_SBUS_CFG_BURST_32 0x00000001 /* 32 byte bursts */
#define GEM_SBUS_CFG_BURST_64 0x00000002 /* 64 byte bursts */
#define GEM_SBUS_CFG_BURST_128 0x00000004 /* 128 byte bursts */
#define GEM_SBUS_CFG_64BIT 0x00000008 /* extended transfer mode */
#define GEM_SBUS_CFG_PARITY 0x00000200 /* enable parity checking */
/* GEM_SBUS_STATUS register bits */
#define GEM_SBUS_STATUS_LERR 0x00000001 /* LERR from SBus slave */
#define GEM_SBUS_STATUS_SACK 0x00000002 /* size ack. error */
#define GEM_SBUS_STATUS_EACK 0x00000004 /* SBus ctrl. or slave error */
#define GEM_SBUS_STATUS_MPARITY 0x00000008 /* SBus master parity error */
/* GEM_RESET register bits -- TX and RX self clear when complete. */
#define GEM_RESET_TX 0x00000001 /* Reset TX half. */
#define GEM_RESET_RX 0x00000002 /* Reset RX half. */
#define GEM_RESET_PCI_RSTOUT 0x00000004 /* Force PCI RSTOUT#. */
/* The rest of the registers live in the first bank again. */
/* TX DMA registers */
#define GEM_TX_KICK 0x2000 /* Write last valid desc + 1 */
#define GEM_TX_CONFIG 0x2004
#define GEM_TX_RING_PTR_LO 0x2008
#define GEM_TX_RING_PTR_HI 0x200c
#define GEM_TX_FIFO_WR_PTR 0x2014 /* FIFO write pointer */
#define GEM_TX_FIFO_SDWR_PTR 0x2018 /* FIFO shadow write pointer */
#define GEM_TX_FIFO_RD_PTR 0x201c /* FIFO read pointer */
#define GEM_TX_FIFO_SDRD_PTR 0x2020 /* FIFO shadow read pointer */
#define GEM_TX_FIFO_PKT_CNT 0x2024 /* FIFO packet counter */
#define GEM_TX_STATE_MACHINE 0x2028 /* ETX state machine reg */
#define GEM_TX_DATA_PTR_LO 0x2030
#define GEM_TX_DATA_PTR_HI 0x2034
#define GEM_TX_COMPLETION 0x2100
#define GEM_TX_FIFO_ADDRESS 0x2104
#define GEM_TX_FIFO_TAG 0x2108
#define GEM_TX_FIFO_DATA_LO 0x210c
#define GEM_TX_FIFO_DATA_HI_T1 0x2110
#define GEM_TX_FIFO_DATA_HI_T0 0x2114
#define GEM_TX_FIFO_SIZE 0x2118
#define GEM_TX_DEBUG 0x3028
/* GEM_TX_CONFIG register bits */
#define GEM_TX_CONFIG_TXDMA_EN 0x00000001 /* TX DMA enable */
#define GEM_TX_CONFIG_TXRING_SZ 0x0000001e /* TX ring size */
#define GEM_TX_CONFIG_TXFIFO_TH 0x001ffc00 /* TX fifo threshold */
#define GEM_TX_CONFIG_PACED 0x00200000 /* TX_all_int modifier */
#define GEM_RING_SZ_32 (0<<1) /* 32 descriptors */
#define GEM_RING_SZ_64 (1<<1)
#define GEM_RING_SZ_128 (2<<1)
#define GEM_RING_SZ_256 (3<<1)
#define GEM_RING_SZ_512 (4<<1)
#define GEM_RING_SZ_1024 (5<<1)
#define GEM_RING_SZ_2048 (6<<1)
#define GEM_RING_SZ_4096 (7<<1)
#define GEM_RING_SZ_8192 (8<<1)
/* GEM_TX_COMPLETION register bits */
#define GEM_TX_COMPLETION_MASK 0x00001fff /* # of last descriptor */
/* RX DMA registers */
#define GEM_RX_CONFIG 0x4000
#define GEM_RX_RING_PTR_LO 0x4004 /* 64-bits unaligned GAK! */
#define GEM_RX_RING_PTR_HI 0x4008 /* 64-bits unaligned GAK! */
#define GEM_RX_FIFO_WR_PTR 0x400c /* FIFO write pointer */
#define GEM_RX_FIFO_SDWR_PTR 0x4010 /* FIFO shadow write pointer */
#define GEM_RX_FIFO_RD_PTR 0x4014 /* FIFO read pointer */
#define GEM_RX_FIFO_PKT_CNT 0x4018 /* FIFO packet counter */
#define GEM_RX_STATE_MACHINE 0x401c /* ERX state machine reg */
#define GEM_RX_PAUSE_THRESH 0x4020
#define GEM_RX_DATA_PTR_LO 0x4024 /* ERX state machine reg */
#define GEM_RX_DATA_PTR_HI 0x4028 /* Damn thing is unaligned */
#define GEM_RX_KICK 0x4100 /* Write last valid desc + 1 */
#define GEM_RX_COMPLETION 0x4104 /* First pending desc */
#define GEM_RX_BLANKING 0x4108 /* Interrupt blanking reg */
#define GEM_RX_FIFO_ADDRESS 0x410c
#define GEM_RX_FIFO_TAG 0x4110
#define GEM_RX_FIFO_DATA_LO 0x4114
#define GEM_RX_FIFO_DATA_HI_T1 0x4118
#define GEM_RX_FIFO_DATA_HI_T0 0x411c
#define GEM_RX_FIFO_SIZE 0x4120
/* GEM_RX_CONFIG register bits */
#define GEM_RX_CONFIG_RXDMA_EN 0x00000001 /* RX DMA enable */
#define GEM_RX_CONFIG_RXRING_SZ 0x0000001e /* RX ring size */
#define GEM_RX_CONFIG_BATCH_DIS 0x00000020 /* desc batching disable */
#define GEM_RX_CONFIG_FBOFF 0x00001c00 /* first byte offset */
#define GEM_RX_CONFIG_CXM_START 0x000fe000 /* cksum start offset bytes */
#define GEM_RX_CONFIG_FIFO_THRS 0x07000000 /* fifo threshold size */
#define GEM_THRSH_64 0
#define GEM_THRSH_128 1
#define GEM_THRSH_256 2
#define GEM_THRSH_512 3
#define GEM_THRSH_1024 4
#define GEM_THRSH_2048 5
#define GEM_RX_CONFIG_FIFO_THRS_SHIFT 24
#define GEM_RX_CONFIG_FBOFF_SHFT 10
#define GEM_RX_CONFIG_CXM_START_SHFT 13
/* GEM_RX_PAUSE_THRESH register bits -- sizes in multiples of 64 bytes */
#define GEM_RX_PTH_XOFF_THRESH 0x000001ff
#define GEM_RX_PTH_XON_THRESH 0x001ff000
/* GEM_RX_BLANKING register bits */
#define GEM_RX_BLANKING_PACKETS 0x000001ff /* Delay intr for x packets */
#define GEM_RX_BLANKING_TIME 0x000ff000 /* Delay intr for x ticks */
#define GEM_RX_BLANKING_TIME_SHIFT 12
/* One tick is 2048 PCI clocks, or 16us at 66MHz */
/* GEM_MAC registers */
#define GEM_MAC_TXRESET 0x6000 /* Store 1, cleared when done */
#define GEM_MAC_RXRESET 0x6004 /* ditto */
#define GEM_MAC_SEND_PAUSE_CMD 0x6008
#define GEM_MAC_TX_STATUS 0x6010
#define GEM_MAC_RX_STATUS 0x6014
#define GEM_MAC_CONTROL_STATUS 0x6018 /* MAC control status reg */
#define GEM_MAC_TX_MASK 0x6020 /* TX MAC mask register */
#define GEM_MAC_RX_MASK 0x6024
#define GEM_MAC_CONTROL_MASK 0x6028
#define GEM_MAC_TX_CONFIG 0x6030
#define GEM_MAC_RX_CONFIG 0x6034
#define GEM_MAC_CONTROL_CONFIG 0x6038
#define GEM_MAC_XIF_CONFIG 0x603c
#define GEM_MAC_IPG0 0x6040 /* inter packet gap 0 */
#define GEM_MAC_IPG1 0x6044 /* inter packet gap 1 */
#define GEM_MAC_IPG2 0x6048 /* inter packet gap 2 */
#define GEM_MAC_SLOT_TIME 0x604c /* slot time, bits 0-7 */
#define GEM_MAC_MAC_MIN_FRAME 0x6050
#define GEM_MAC_MAC_MAX_FRAME 0x6054
#define GEM_MAC_PREAMBLE_LEN 0x6058
#define GEM_MAC_JAM_SIZE 0x605c
#define GEM_MAC_ATTEMPT_LIMIT 0x6060
#define GEM_MAC_CONTROL_TYPE 0x6064
#define GEM_MAC_ADDR0 0x6080 /* Normal MAC address 0 */
#define GEM_MAC_ADDR1 0x6084
#define GEM_MAC_ADDR2 0x6088
#define GEM_MAC_ADDR3 0x608c /* Alternate MAC address 0 */
#define GEM_MAC_ADDR4 0x6090
#define GEM_MAC_ADDR5 0x6094
#define GEM_MAC_ADDR6 0x6098 /* Control MAC address 0 */
#define GEM_MAC_ADDR7 0x609c
#define GEM_MAC_ADDR8 0x60a0
#define GEM_MAC_ADDR_FILTER0 0x60a4
#define GEM_MAC_ADDR_FILTER1 0x60a8
#define GEM_MAC_ADDR_FILTER2 0x60ac
#define GEM_MAC_ADR_FLT_MASK1_2 0x60b0 /* Address filter mask 1,2 */
#define GEM_MAC_ADR_FLT_MASK0 0x60b4 /* Address filter mask 0 reg */
#define GEM_MAC_HASH0 0x60c0 /* Hash table 0 */
#define GEM_MAC_HASH1 0x60c4
#define GEM_MAC_HASH2 0x60c8
#define GEM_MAC_HASH3 0x60cc
#define GEM_MAC_HASH4 0x60d0
#define GEM_MAC_HASH5 0x60d4
#define GEM_MAC_HASH6 0x60d8
#define GEM_MAC_HASH7 0x60dc
#define GEM_MAC_HASH8 0x60e0
#define GEM_MAC_HASH9 0x60e4
#define GEM_MAC_HASH10 0x60e8
#define GEM_MAC_HASH11 0x60ec
#define GEM_MAC_HASH12 0x60f0
#define GEM_MAC_HASH13 0x60f4
#define GEM_MAC_HASH14 0x60f8
#define GEM_MAC_HASH15 0x60fc
#define GEM_MAC_NORM_COLL_CNT 0x6100 /* Normal collision counter */
#define GEM_MAC_FIRST_COLL_CNT 0x6104 /* 1st successful collision cntr */
#define GEM_MAC_EXCESS_COLL_CNT 0x6108 /* Excess collision counter */
#define GEM_MAC_LATE_COLL_CNT 0x610c /* Late collision counter */
#define GEM_MAC_DEFER_TMR_CNT 0x6110 /* defer timer counter */
#define GEM_MAC_PEAK_ATTEMPTS 0x6114
#define GEM_MAC_RX_FRAME_COUNT 0x6118
#define GEM_MAC_RX_LEN_ERR_CNT 0x611c
#define GEM_MAC_RX_ALIGN_ERR 0x6120
#define GEM_MAC_RX_CRC_ERR_CNT 0x6124
#define GEM_MAC_RX_CODE_VIOL 0x6128
#define GEM_MAC_RANDOM_SEED 0x6130
#define GEM_MAC_MAC_STATE 0x6134 /* MAC state machine reg */
/* GEM_MAC_SEND_PAUSE_CMD register bits */
#define GEM_MAC_PAUSE_CMD_TIME 0x0000ffff
#define GEM_MAC_PAUSE_CMD_SEND 0x00010000
/* GEM_MAC_TX_STATUS and _MASK register bits */
#define GEM_MAC_TX_XMIT_DONE 0x00000001
#define GEM_MAC_TX_UNDERRUN 0x00000002
#define GEM_MAC_TX_PKT_TOO_LONG 0x00000004
#define GEM_MAC_TX_NCC_EXP 0x00000008 /* Normal collision cnt exp */
#define GEM_MAC_TX_ECC_EXP 0x00000010
#define GEM_MAC_TX_LCC_EXP 0x00000020
#define GEM_MAC_TX_FCC_EXP 0x00000040
#define GEM_MAC_TX_DEFER_EXP 0x00000080
#define GEM_MAC_TX_PEAK_EXP 0x00000100
/* GEM_MAC_RX_STATUS and _MASK register bits */
#define GEM_MAC_RX_DONE 0x00000001
#define GEM_MAC_RX_OVERFLOW 0x00000002
#define GEM_MAC_RX_FRAME_CNT 0x00000004
#define GEM_MAC_RX_ALIGN_EXP 0x00000008
#define GEM_MAC_RX_CRC_EXP 0x00000010
#define GEM_MAC_RX_LEN_EXP 0x00000020
#define GEM_MAC_RX_CVI_EXP 0x00000040 /* Code violation */
/* GEM_MAC_CONTROL_STATUS and GEM_MAC_CONTROL_MASK register bits */
#define GEM_MAC_PAUSED 0x00000001 /* Pause received */
#define GEM_MAC_PAUSE 0x00000002 /* enter pause state */
#define GEM_MAC_RESUME 0x00000004 /* exit pause state */
#define GEM_MAC_PAUSE_TIME_SLTS 0xffff0000 /* pause time in slots */
#define GEM_MAC_STATUS_BITS "\177\020b\0PAUSED\0b\1PAUSE\0b\2RESUME\0\0"
#define GEM_MAC_PAUSE_TIME_SHFT 16
#define GEM_MAC_PAUSE_TIME(x) \
(((x) & GEM_MAC_PAUSE_TIME_SLTS) >> GEM_MAC_PAUSE_TIME_SHFT)
/* GEM_MAC_XIF_CONFIG register bits */
#define GEM_MAC_XIF_TX_MII_ENA 0x00000001 /* Enable XIF output drivers */
#define GEM_MAC_XIF_MII_LOOPBK 0x00000002 /* Enable MII loopback mode */
#define GEM_MAC_XIF_ECHO_DISABL 0x00000004 /* Disable echo */
#define GEM_MAC_XIF_GMII_MODE 0x00000008 /* Select GMII/MII mode */
#define GEM_MAC_XIF_MII_BUF_ENA 0x00000010 /* Enable MII recv buffers */
#define GEM_MAC_XIF_LINK_LED 0x00000020 /* force link LED active */
#define GEM_MAC_XIF_FDPLX_LED 0x00000040 /* force FDPLX LED active */
#define GEM_MAC_XIF_BITS "\177\020b\0TXMIIENA\0b\1MIILOOP\0b\2NOECHO" \
"\0b\3GMII\0b\4MIIBUFENA\0b\5LINKLED\0" \
"b\6FDLED\0\0"
/*
* GEM_MAC_SLOT_TIME register
* The slot time is used as PAUSE time unit, value depends on whether carrier
* extension is enabled.
*/
#define GEM_MAC_SLOT_TIME_CARR_EXTEND 0x200
#define GEM_MAC_SLOT_TIME_NORMAL 0x40
/* GEM_MAC_TX_CONFIG register bits */
#define GEM_MAC_TX_ENABLE 0x00000001 /* TX enable */
#define GEM_MAC_TX_IGN_CARRIER 0x00000002 /* Ignore carrier sense */
#define GEM_MAC_TX_IGN_COLLIS 0x00000004 /* ignore collisions */
#define GEM_MAC_TX_ENA_IPG0 0x00000008 /* extend RX-to-TX IPG */
#define GEM_MAC_TX_NGU 0x00000010 /* Never give up */
#define GEM_MAC_TX_NGU_LIMIT 0x00000020 /* Never give up limit */
#define GEM_MAC_TX_NO_BACKOFF 0x00000040
#define GEM_MAC_TX_SLOWDOWN 0x00000080
#define GEM_MAC_TX_NO_FCS 0x00000100 /* no FCS will be generated */
#define GEM_MAC_TX_CARR_EXTEND 0x00000200 /* Ena TX Carrier Extension */
/* Carrier Extension is required for half duplex Gbps operation. */
#define GEM_MAC_TX_CONFIG_BITS "\177\020" \
"b\0TXENA\0b\1IGNCAR\0b\2IGNCOLLIS\0" \
"b\3IPG0ENA\0b\4TXNGU\0b\5TXNGULIM\0" \
"b\6NOBKOFF\0b\7SLOWDN\0b\x8NOFCS\0" \
"b\x9TXCARREXT\0\0"
/* GEM_MAC_RX_CONFIG register bits */
#define GEM_MAC_RX_ENABLE 0x00000001 /* RX enable */
#define GEM_MAC_RX_STRIP_PAD 0x00000002 /* strip pad bytes */
#define GEM_MAC_RX_STRIP_CRC 0x00000004
#define GEM_MAC_RX_PROMISCUOUS 0x00000008 /* promiscuous mode */
#define GEM_MAC_RX_PROMISC_GRP 0x00000010 /* promiscuous group mode */
#define GEM_MAC_RX_HASH_FILTER 0x00000020 /* enable hash filter */
#define GEM_MAC_RX_ADDR_FILTER 0x00000040 /* enable address filter */
#define GEM_MAC_RX_ERRCHK_DIS 0x00000080 /* disable error checking */
#define GEM_MAC_RX_CARR_EXTEND 0x00000100 /* Ena RX Carrier Extension */
/*
* Carrier Extension enables reception of packet bursts generated by
* senders with carrier extension enabled.
*/
#define GEM_MAC_RX_CONFIG_BITS "\177\020" \
"b\0RXENA\0b\1STRPAD\0b\2STRCRC\0" \
"b\3PROMIS\0b\4PROMISCGRP\0b\5HASHFLTR\0" \
"b\6ADDRFLTR\0b\7ERRCHKDIS\0b\x9TXCARREXT\0\0"
/* GEM_MAC_CONTROL_CONFIG bits */
#define GEM_MAC_CC_TX_PAUSE 0x00000001 /* send pause enabled */
#define GEM_MAC_CC_RX_PAUSE 0x00000002 /* receive pause enabled */
#define GEM_MAC_CC_PASS_PAUSE 0x00000004 /* pass pause up */
#define GEM_MAC_CC_BITS "\177\020b\0TXPAUSE\0b\1RXPAUSE\0b\2NOPAUSE\0\0"
/*
* MIF registers
* Bit bang registers use low bit only.
*/
#define GEM_MIF_BB_CLOCK 0x6200 /* bit bang clock */
#define GEM_MIF_BB_DATA 0x6204 /* bit bang data */
#define GEM_MIF_BB_OUTPUT_ENAB 0x6208
#define GEM_MIF_FRAME 0x620c /* MIF frame - ctl and data */
#define GEM_MIF_CONFIG 0x6210
#define GEM_MIF_MASK 0x6214
#define GEM_MIF_STATUS 0x6218
#define GEM_MIF_STATE_MACHINE 0x621c
/* GEM_MIF_FRAME bits */
#define GEM_MIF_FRAME_DATA 0x0000ffff
#define GEM_MIF_FRAME_TA0 0x00010000 /* TA LSB, 1 for completion */
#define GEM_MIF_FRAME_TA1 0x00020000 /* TA MSB, 1 for instruction */
#define GEM_MIF_FRAME_REG_ADDR 0x007c0000
#define GEM_MIF_FRAME_PHY_ADDR 0x0f800000 /* PHY address */
#define GEM_MIF_FRAME_OP 0x30000000 /* operation - write/read */
#define GEM_MIF_FRAME_START 0xc0000000 /* START bits */
#define GEM_MIF_FRAME_READ 0x60020000
#define GEM_MIF_FRAME_WRITE 0x50020000
#define GEM_MIF_REG_SHIFT 18
#define GEM_MIF_PHY_SHIFT 23
/* GEM_MIF_CONFIG register bits */
#define GEM_MIF_CONFIG_PHY_SEL 0x00000001 /* PHY select, 0: MDIO_0 */
#define GEM_MIF_CONFIG_POLL_ENA 0x00000002 /* poll enable */
#define GEM_MIF_CONFIG_BB_ENA 0x00000004 /* bit bang enable */
#define GEM_MIF_CONFIG_REG_ADR 0x000000f8 /* poll register address */
#define GEM_MIF_CONFIG_MDI0 0x00000100 /* MDIO_0 attached/data */
#define GEM_MIF_CONFIG_MDI1 0x00000200 /* MDIO_1 attached/data */
#define GEM_MIF_CONFIG_PHY_ADR 0x00007c00 /* poll PHY address */
/* MDI0 is the onboard transceiver, MDI1 is external, PHYAD for both is 0. */
#define GEM_MIF_CONFIG_BITS "\177\020b\0PHYSEL\0b\1POLL\0b\2BBENA\0" \
"b\x8MDIO0\0b\x9MDIO1\0\0"
/* GEM_MIF_STATUS and GEM_MIF_MASK bits */
#define GEM_MIF_POLL_STATUS_MASK 0x0000ffff /* polling status */
#define GEM_MIF_POLL_STATUS_SHFT 0
#define GEM_MIF_POLL_DATA_MASK 0xffff0000 /* polling data */
#define GEM_MIF_POLL_DATA_SHFT 8
/*
* The Basic part is the last value read in the POLL field of the config
* register.
* The status part indicates the bits that have changed.
*/
/* GEM PCS/Serial link registers */
/* DO NOT TOUCH THESE REGISTERS ON ERI -- IT HARD HANGS. */
#define GEM_MII_CONTROL 0x9000
#define GEM_MII_STATUS 0x9004
#define GEM_MII_ANAR 0x9008 /* MII advertisement reg */
#define GEM_MII_ANLPAR 0x900c /* Link Partner Ability Reg */
#define GEM_MII_CONFIG 0x9010
#define GEM_MII_STATE_MACHINE 0x9014
#define GEM_MII_INTERRUP_STATUS 0x9018 /* PCS interrupt state */
#define GEM_MII_DATAPATH_MODE 0x9050
#define GEM_MII_SLINK_CONTROL 0x9054 /* Serial link control */
#define GEM_MII_OUTPUT_SELECT 0x9058
#define GEM_MII_SLINK_STATUS 0x905c /* Serialink status */
/* GEM_MII_CONTROL bits - PCS "BMCR" (Basic Mode Control Reg) */
#define GEM_MII_CONTROL_1000M 0x00000040 /* 1000Mbps speed select */
#define GEM_MII_CONTROL_COL_TST 0x00000080 /* collision test */
#define GEM_MII_CONTROL_FDUPLEX 0x00000100 /* full-duplex, always 0 */
#define GEM_MII_CONTROL_RAN 0x00000200 /* restart auto-negotiation */
#define GEM_MII_CONTROL_ISOLATE 0x00000400 /* isolate PHY from MII */
#define GEM_MII_CONTROL_POWERDN 0x00000800 /* power down */
#define GEM_MII_CONTROL_AUTONEG 0x00001000 /* auto-negotiation enable */
#define GEM_MII_CONTROL_10_100M 0x00002000 /* 10/100Mbps speed select */
#define GEM_MII_CONTROL_LOOPBK 0x00004000 /* 10-bit i/f loopback */
#define GEM_MII_CONTROL_RESET 0x00008000 /* Reset PCS. */
#define GEM_MII_CONTROL_BITS "\177\020b\7COLTST\0b\x8_FD\0b\x9RAN\0" \
"b\xaISOLATE\0b\xbPWRDWN\0b\xc_ANEG\0" \
"b\xdGIGE\0b\xeLOOP\0b\xfRESET\0\0"
/* GEM_MII_STATUS reg - PCS "BMSR" (Basic Mode Status Reg) */
#define GEM_MII_STATUS_EXTCAP 0x00000001 /* extended capability */
#define GEM_MII_STATUS_JABBER 0x00000002 /* jabber condition detected */
#define GEM_MII_STATUS_LINK_STS 0x00000004 /* link status */
#define GEM_MII_STATUS_ACFG 0x00000008 /* can auto-negotiate */
#define GEM_MII_STATUS_REM_FLT 0x00000010 /* remote fault detected */
#define GEM_MII_STATUS_ANEG_CPT 0x00000020 /* auto-negotiate complete */
#define GEM_MII_STATUS_EXTENDED 0x00000100 /* extended status */
#define GEM_MII_STATUS_BITS "\177\020b\0EXTCAP\0b\1JABBER\0b\2LINKSTS\0" \
"b\3ACFG\0b\4REMFLT\0b\5ANEGCPT\0\0"
/* GEM_MII_ANAR and GEM_MII_ANLPAR reg bits */
#define GEM_MII_ANEG_FDUPLX 0x00000020 /* full-duplex */
#define GEM_MII_ANEG_HDUPLX 0x00000040 /* half-duplex */
#define GEM_MII_ANEG_PAUSE 0x00000080 /* symmetric PAUSE */
#define GEM_MII_ANEG_ASM_DIR 0x00000100 /* asymmetric PAUSE */
#define GEM_MII_ANEG_RFLT_FAIL 0x00001000 /* remote fault - fail */
#define GEM_MII_ANEG_RFLT_OFF 0x00002000 /* remote fault - off-line */
#define GEM_MII_ANEG_RFLT_MASK \
(CAS_PCS_ANEG_RFLT_FAIL | CAS_PCS_ANEG_RFLT_OFF)
#define GEM_MII_ANEG_ACK 0x00004000 /* acknowledge */
#define GEM_MII_ANEG_NP 0x00008000 /* next page */
#define GEM_MII_ANEG_BITS "\177\020b\5FDX\0b\6HDX\0b\7SYMPAUSE\0" \
"\b\x8_ASYMPAUSE\0\b\xdREMFLT\0\b\xeLPACK\0" \
"\b\xfNPBIT\0\0"
/* GEM_MII_CONFIG reg */
#define GEM_MII_CONFIG_ENABLE 0x00000001 /* Enable PCS. */
#define GEM_MII_CONFIG_SDO 0x00000002 /* signal detect override */
#define GEM_MII_CONFIG_SDL 0x00000004 /* signal detect active-low */
#define GEM_MII_CONFIG_JS_NORM 0x00000000 /* jitter study - normal op. */
#define GEM_MII_CONFIG_JS_HF 0x00000008 /* jitter study - HF test */
#define GEM_MII_CONFIG_JS_LF 0x00000010 /* jitter study - LF test */
#define GEM_MII_CONFIG_JS_MASK \
(GEM_MII_CONFIG_JS_HF | GEM_MII_CONFIG_JS_LF)
#define GEM_MII_CONFIG_ANTO 0x00000020 /* auto-neg. timer override */
#define GEM_MII_CONFIG_BITS "\177\020b\0PCSENA\0\0"
/*
* GEM_MII_INTERRUP_STATUS reg
* No mask register; mask with the global interrupt mask register.
*/
#define GEM_MII_INTERRUP_LINK 0x00000004 /* PCS link status change */
/* GEM_MII_DATAPATH_MODE reg */
#define GEM_MII_DATAPATH_SERIAL 0x00000001 /* Serialink */
#define GEM_MII_DATAPATH_SERDES 0x00000002 /* SERDES via 10-bit */
#define GEM_MII_DATAPATH_MII 0x00000004 /* GMII/MII */
#define GEM_MII_DATAPATH_GMIIOE 0x00000008 /* serial output on GMII en. */
#define GEM_MII_DATAPATH_BITS "\177\020" \
"b\0SERIAL\0b\1SERDES\0b\2MII\0b\3GMIIOE\0\0"
/* GEM_MII_SLINK_CONTROL reg */
#define GEM_MII_SLINK_LOOPBACK 0x00000001 /* enable loopback at SL, logic
* reversed for SERDES */
#define GEM_MII_SLINK_EN_SYNC_D 0x00000002 /* enable sync detection */
#define GEM_MII_SLINK_LOCK_REF 0x00000004 /* lock to reference clock */
#define GEM_MII_SLINK_EMPHASIS 0x00000018 /* enable emphasis */
#define GEM_MII_SLINK_SELFTEST 0x000001c0 /* self-test */
#define GEM_MII_SLINK_POWER_OFF 0x00000200 /* Power down Serialink. */
#define GEM_MII_SLINK_RX_ZERO 0x00000c00 /* PLL input to Serialink. */
#define GEM_MII_SLINK_RX_POLE 0x00003000 /* PLL input to Serialink. */
#define GEM_MII_SLINK_TX_ZERO 0x0000c000 /* PLL input to Serialink. */
#define GEM_MII_SLINK_TX_POLE 0x00030000 /* PLL input to Serialink. */
#define GEM_MII_SLINK_CONTROL_BITS \
"\177\020b\0LOOP\0b\1ENASYNC\0b\2LOCKREF" \
"\0b\3EMPHASIS\0b\x9PWRDWN\0\0"
/* GEM_MII_SLINK_STATUS reg */
#define GEM_MII_SLINK_TEST 0x00000000 /* undergoing test */
#define GEM_MII_SLINK_LOCKED 0x00000001 /* waiting 500us w/ lockrefn */
#define GEM_MII_SLINK_COMMA 0x00000002 /* waiting for comma detect */
#define GEM_MII_SLINK_SYNC 0x00000003 /* recv data synchronized */
/*
* PCI Expansion ROM runtime access
* Sun GEMs map a 1MB space for the PCI Expansion ROM as the second half
* of the first register bank, although they only support up to 64KB ROMs.
*/
#define GEM_PCI_ROM_OFFSET 0x100000
#define GEM_PCI_ROM_SIZE 0x10000
/* Wired PHY addresses */
#define GEM_PHYAD_INTERNAL 1
#define GEM_PHYAD_EXTERNAL 0
/*
* descriptor table structures
*/
struct gem_desc {
uint64_t gd_flags;
uint64_t gd_addr;
};
/* Transmit flags */
#define GEM_TD_BUFSIZE 0x0000000000007fffULL
#define GEM_TD_CXSUM_START 0x00000000001f8000ULL /* Cxsum start offset */
#define GEM_TD_CXSUM_STARTSHFT 15
#define GEM_TD_CXSUM_STUFF 0x000000001fe00000ULL /* Cxsum stuff offset */
#define GEM_TD_CXSUM_STUFFSHFT 21
#define GEM_TD_CXSUM_ENABLE 0x0000000020000000ULL /* Cxsum generation enable */
#define GEM_TD_END_OF_PACKET 0x0000000040000000ULL
#define GEM_TD_START_OF_PACKET 0x0000000080000000ULL
#define GEM_TD_INTERRUPT_ME 0x0000000100000000ULL /* Interrupt me now */
#define GEM_TD_NO_CRC 0x0000000200000000ULL /* do not insert crc */
/*
* Only need to set GEM_TD_CXSUM_ENABLE, GEM_TD_CXSUM_STUFF,
* GEM_TD_CXSUM_START, and GEM_TD_INTERRUPT_ME in 1st descriptor of a group.
*/
/* Receive flags */
#define GEM_RD_CHECKSUM 0x000000000000ffffULL /* is the complement */
#define GEM_RD_BUFSIZE 0x000000007fff0000ULL
#define GEM_RD_OWN 0x0000000080000000ULL /* 1 - owned by h/w */
#define GEM_RD_HASHVAL 0x0ffff00000000000ULL
#define GEM_RD_HASH_PASS 0x1000000000000000ULL /* passed hash filter */
#define GEM_RD_ALTERNATE_MAC 0x2000000000000000ULL /* Alternate MAC adrs */
#define GEM_RD_BAD_CRC 0x4000000000000000ULL
#define GEM_RD_BUFSHIFT 16
#define GEM_RD_BUFLEN(x) (((x) & GEM_RD_BUFSIZE) >> GEM_RD_BUFSHIFT)
#endif
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