drivers/net/ethernet/seeq/sgiseeq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * sgiseeq.h: Defines for the Seeq8003 ethernet controller.
   4  *
   5  * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
   6  */
   7 #ifndef _SGISEEQ_H
   8 #define _SGISEEQ_H
   9
  10 struct sgiseeq_wregs {
  11         volatile unsigned int multicase_high[2];
  12         volatile unsigned int frame_gap;
  13         volatile unsigned int control;
  14 };
  15
  16 struct sgiseeq_rregs {
  17         volatile unsigned int collision_tx[2];
  18         volatile unsigned int collision_all[2];
  19         volatile unsigned int _unused0;
  20         volatile unsigned int rflags;
  21 };
  22
  23 struct sgiseeq_regs {
  24         union {
  25                 volatile unsigned int eth_addr[6];
  26                 volatile unsigned int multicast_low[6];
  27                 struct sgiseeq_wregs wregs;
  28                 struct sgiseeq_rregs rregs;
  29         } rw;
  30         volatile unsigned int rstat;
  31         volatile unsigned int tstat;
  32 };
  33
  34 /* Seeq8003 receive status register */
  35 #define SEEQ_RSTAT_OVERF   0x001 /* Overflow */
  36 #define SEEQ_RSTAT_CERROR  0x002 /* CRC error */
  37 #define SEEQ_RSTAT_DERROR  0x004 /* Dribble error */
  38 #define SEEQ_RSTAT_SFRAME  0x008 /* Short frame */
  39 #define SEEQ_RSTAT_REOF    0x010 /* Received end of frame */
  40 #define SEEQ_RSTAT_FIG     0x020 /* Frame is good */
  41 #define SEEQ_RSTAT_TIMEO   0x040 /* Timeout, or late receive */
  42 #define SEEQ_RSTAT_WHICH   0x080 /* Which status, 1=old 0=new */
  43 #define SEEQ_RSTAT_LITTLE  0x100 /* DMA is done in little endian format */
  44 #define SEEQ_RSTAT_SDMA    0x200 /* DMA has started */
  45 #define SEEQ_RSTAT_ADMA    0x400 /* DMA is active */
  46 #define SEEQ_RSTAT_ROVERF  0x800 /* Receive buffer overflow */
  47
  48 /* Seeq8003 receive command register */
  49 #define SEEQ_RCMD_RDISAB   0x000 /* Disable receiver on the Seeq8003 */
  50 #define SEEQ_RCMD_IOVERF   0x001 /* IRQ on buffer overflows */
  51 #define SEEQ_RCMD_ICRC     0x002 /* IRQ on CRC errors */
  52 #define SEEQ_RCMD_IDRIB    0x004 /* IRQ on dribble errors */
  53 #define SEEQ_RCMD_ISHORT   0x008 /* IRQ on short frames */
  54 #define SEEQ_RCMD_IEOF     0x010 /* IRQ on end of frame */
  55 #define SEEQ_RCMD_IGOOD    0x020 /* IRQ on good frames */
  56 #define SEEQ_RCMD_RANY     0x040 /* Receive any frame */
  57 #define SEEQ_RCMD_RBCAST   0x080 /* Receive broadcasts */
  58 #define SEEQ_RCMD_RBMCAST  0x0c0 /* Receive broadcasts/multicasts */
  59
  60 /* Seeq8003 transmit status register */
  61 #define SEEQ_TSTAT_UFLOW   0x001 /* Transmit buffer underflow */
  62 #define SEEQ_TSTAT_CLS     0x002 /* Collision detected */
  63 #define SEEQ_TSTAT_R16     0x004 /* Did 16 retries to tx a frame */
  64 #define SEEQ_TSTAT_PTRANS  0x008 /* Packet was transmitted ok */
  65 #define SEEQ_TSTAT_LCLS    0x010 /* Late collision occurred */
  66 #define SEEQ_TSTAT_WHICH   0x080 /* Which status, 1=old 0=new */
  67 #define SEEQ_TSTAT_TLE     0x100 /* DMA is done in little endian format */
  68 #define SEEQ_TSTAT_SDMA    0x200 /* DMA has started */
  69 #define SEEQ_TSTAT_ADMA    0x400 /* DMA is active */
  70
  71 /* Seeq8003 transmit command register */
  72 #define SEEQ_TCMD_RB0      0x00 /* Register bank zero w/station addr */
  73 #define SEEQ_TCMD_IUF      0x01 /* IRQ on tx underflow */
  74 #define SEEQ_TCMD_IC       0x02 /* IRQ on collisions */
  75 #define SEEQ_TCMD_I16      0x04 /* IRQ after 16 failed attempts to tx frame */
  76 #define SEEQ_TCMD_IPT      0x08 /* IRQ when packet successfully transmitted */
  77 #define SEEQ_TCMD_RB1      0x20 /* Register bank one w/multi-cast low byte */
  78 #define SEEQ_TCMD_RB2      0x40 /* Register bank two w/multi-cast high byte */
  79
  80 /* Seeq8003 control register */
  81 #define SEEQ_CTRL_XCNT     0x01
  82 #define SEEQ_CTRL_ACCNT    0x02
  83 #define SEEQ_CTRL_SFLAG    0x04
  84 #define SEEQ_CTRL_EMULTI   0x08
  85 #define SEEQ_CTRL_ESHORT   0x10
  86 #define SEEQ_CTRL_ENCARR   0x20
  87
  88 /* Seeq8003 control registers on the SGI Hollywood HPC. */
  89 #define SEEQ_HPIO_P1BITS  0x00000001 /* cycles to stay in P1 phase for PIO */
  90 #define SEEQ_HPIO_P2BITS  0x00000060 /* cycles to stay in P2 phase for PIO */
  91 #define SEEQ_HPIO_P3BITS  0x00000100 /* cycles to stay in P3 phase for PIO */
  92 #define SEEQ_HDMA_D1BITS  0x00000006 /* cycles to stay in D1 phase for DMA */
  93 #define SEEQ_HDMA_D2BITS  0x00000020 /* cycles to stay in D2 phase for DMA */
  94 #define SEEQ_HDMA_D3BITS  0x00000000 /* cycles to stay in D3 phase for DMA */
  95 #define SEEQ_HDMA_TIMEO   0x00030000 /* cycles for DMA timeout */
  96 #define SEEQ_HCTL_NORM    0x00000000 /* Normal operation mode */
  97 #define SEEQ_HCTL_RESET   0x00000001 /* Reset Seeq8003 and HPC interface */
  98 #define SEEQ_HCTL_IPEND   0x00000002 /* IRQ is pending for the chip */
  99 #define SEEQ_HCTL_IPG     0x00001000 /* Inter-packet gap */
 100 #define SEEQ_HCTL_RFIX    0x00002000 /* At rxdc, clear end-of-packet */
 101 #define SEEQ_HCTL_EFIX    0x00004000 /* fixes intr status bit settings */
 102 #define SEEQ_HCTL_IFIX    0x00008000 /* enable startup timeouts */
 103
 104 #endif /* !(_SGISEEQ_H) */