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/* SPDX-License-Identifier: GPL-2.0 */
/*
* sgiseeq.h: Defines for the Seeq8003 ethernet controller.
*
* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
*/
#ifndef _SGISEEQ_H
#define _SGISEEQ_H
struct sgiseeq_wregs {
volatile unsigned int multicase_high[2];
volatile unsigned int frame_gap;
volatile unsigned int control;
};
struct sgiseeq_rregs {
volatile unsigned int collision_tx[2];
volatile unsigned int collision_all[2];
volatile unsigned int _unused0;
volatile unsigned int rflags;
};
struct sgiseeq_regs {
union {
volatile unsigned int eth_addr[6];
volatile unsigned int multicast_low[6];
struct sgiseeq_wregs wregs;
struct sgiseeq_rregs rregs;
} rw;
volatile unsigned int rstat;
volatile unsigned int tstat;
};
/* Seeq8003 receive status register */
#define SEEQ_RSTAT_OVERF 0x001 /* Overflow */
#define SEEQ_RSTAT_CERROR 0x002 /* CRC error */
#define SEEQ_RSTAT_DERROR 0x004 /* Dribble error */
#define SEEQ_RSTAT_SFRAME 0x008 /* Short frame */
#define SEEQ_RSTAT_REOF 0x010 /* Received end of frame */
#define SEEQ_RSTAT_FIG 0x020 /* Frame is good */
#define SEEQ_RSTAT_TIMEO 0x040 /* Timeout, or late receive */
#define SEEQ_RSTAT_WHICH 0x080 /* Which status, 1=old 0=new */
#define SEEQ_RSTAT_LITTLE 0x100 /* DMA is done in little endian format */
#define SEEQ_RSTAT_SDMA 0x200 /* DMA has started */
#define SEEQ_RSTAT_ADMA 0x400 /* DMA is active */
#define SEEQ_RSTAT_ROVERF 0x800 /* Receive buffer overflow */
/* Seeq8003 receive command register */
#define SEEQ_RCMD_RDISAB 0x000 /* Disable receiver on the Seeq8003 */
#define SEEQ_RCMD_IOVERF 0x001 /* IRQ on buffer overflows */
#define SEEQ_RCMD_ICRC 0x002 /* IRQ on CRC errors */
#define SEEQ_RCMD_IDRIB 0x004 /* IRQ on dribble errors */
#define SEEQ_RCMD_ISHORT 0x008 /* IRQ on short frames */
#define SEEQ_RCMD_IEOF 0x010 /* IRQ on end of frame */
#define SEEQ_RCMD_IGOOD 0x020 /* IRQ on good frames */
#define SEEQ_RCMD_RANY 0x040 /* Receive any frame */
#define SEEQ_RCMD_RBCAST 0x080 /* Receive broadcasts */
#define SEEQ_RCMD_RBMCAST 0x0c0 /* Receive broadcasts/multicasts */
/* Seeq8003 transmit status register */
#define SEEQ_TSTAT_UFLOW 0x001 /* Transmit buffer underflow */
#define SEEQ_TSTAT_CLS 0x002 /* Collision detected */
#define SEEQ_TSTAT_R16 0x004 /* Did 16 retries to tx a frame */
#define SEEQ_TSTAT_PTRANS 0x008 /* Packet was transmitted ok */
#define SEEQ_TSTAT_LCLS 0x010 /* Late collision occurred */
#define SEEQ_TSTAT_WHICH 0x080 /* Which status, 1=old 0=new */
#define SEEQ_TSTAT_TLE 0x100 /* DMA is done in little endian format */
#define SEEQ_TSTAT_SDMA 0x200 /* DMA has started */
#define SEEQ_TSTAT_ADMA 0x400 /* DMA is active */
/* Seeq8003 transmit command register */
#define SEEQ_TCMD_RB0 0x00 /* Register bank zero w/station addr */
#define SEEQ_TCMD_IUF 0x01 /* IRQ on tx underflow */
#define SEEQ_TCMD_IC 0x02 /* IRQ on collisions */
#define SEEQ_TCMD_I16 0x04 /* IRQ after 16 failed attempts to tx frame */
#define SEEQ_TCMD_IPT 0x08 /* IRQ when packet successfully transmitted */
#define SEEQ_TCMD_RB1 0x20 /* Register bank one w/multi-cast low byte */
#define SEEQ_TCMD_RB2 0x40 /* Register bank two w/multi-cast high byte */
/* Seeq8003 control register */
#define SEEQ_CTRL_XCNT 0x01
#define SEEQ_CTRL_ACCNT 0x02
#define SEEQ_CTRL_SFLAG 0x04
#define SEEQ_CTRL_EMULTI 0x08
#define SEEQ_CTRL_ESHORT 0x10
#define SEEQ_CTRL_ENCARR 0x20
/* Seeq8003 control registers on the SGI Hollywood HPC. */
#define SEEQ_HPIO_P1BITS 0x00000001 /* cycles to stay in P1 phase for PIO */
#define SEEQ_HPIO_P2BITS 0x00000060 /* cycles to stay in P2 phase for PIO */
#define SEEQ_HPIO_P3BITS 0x00000100 /* cycles to stay in P3 phase for PIO */
#define SEEQ_HDMA_D1BITS 0x00000006 /* cycles to stay in D1 phase for DMA */
#define SEEQ_HDMA_D2BITS 0x00000020 /* cycles to stay in D2 phase for DMA */
#define SEEQ_HDMA_D3BITS 0x00000000 /* cycles to stay in D3 phase for DMA */
#define SEEQ_HDMA_TIMEO 0x00030000 /* cycles for DMA timeout */
#define SEEQ_HCTL_NORM 0x00000000 /* Normal operation mode */
#define SEEQ_HCTL_RESET 0x00000001 /* Reset Seeq8003 and HPC interface */
#define SEEQ_HCTL_IPEND 0x00000002 /* IRQ is pending for the chip */
#define SEEQ_HCTL_IPG 0x00001000 /* Inter-packet gap */
#define SEEQ_HCTL_RFIX 0x00002000 /* At rxdc, clear end-of-packet */
#define SEEQ_HCTL_EFIX 0x00004000 /* fixes intr status bit settings */
#define SEEQ_HCTL_IFIX 0x00008000 /* enable startup timeouts */
#endif /* !(_SGISEEQ_H) */
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