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freebsd-skq/sys/pci/if_txvar.h
Semen Ustimenko 29563129dd Implemented workaround for EPIC's Application Note 7-15 (concerning 
chip int. and ext. clock synchronisation). Fixed workaround for
transmit threshold underrun. Added volatile keyword to CSR_READ_* and
CSR_WRITE_* macroses. Added DELAYs to eliminate randomness caused
by processor speed. Fixed all TXCON and RXCON registers to be accessed
only when chip is idle, as manual told. Changed epic_init_phy to
drop link by isolating and going loopback, should should force link
partner to restart autonegotiation.

PR: kern/10535,	kern/9742, kern/10575
Submitted by:	Peter Jeremy, David Greenman
1999-03-14 08:30:23 +00:00

416 lines
14 KiB
C
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/* $OpenBSD: if_txvar.h,v 1.3 1998/10/10 04:30:09 jason Exp $ */
/* $Id: if_txvar.h,v 1.1 1998/11/01 07:44:33 semenu Exp $ */
/*-
* Copyright (c) 1997 Semen Ustimenko
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
*
*/
/*
* Configuration
*/
#ifndef ETHER_MAX_LEN
#define ETHER_MAX_LEN 1518
#endif
#ifndef ETHER_MIN_LEN
#define ETHER_MIN_LEN 64
#endif
#ifndef ETHER_CRC_LEN
#define ETHER_CRC_LEN 4
#endif
#define TX_RING_SIZE 16 /* Leave this a power of 2 */
#define RX_RING_SIZE 16 /* And this too, to do not */
/* confuse RX(TX)_RING_MASK */
#define TX_RING_MASK (TX_RING_SIZE - 1)
#define RX_RING_MASK (RX_RING_SIZE - 1)
#define EPIC_FULL_DUPLEX 1
#define EPIC_HALF_DUPLEX 0
#define ETHER_MAX_FRAME_LEN (ETHER_MAX_LEN + ETHER_CRC_LEN)
#define EPIC_LINK_DOWN 0x00000001
/* PCI identification */
#define SMC_VENDORID 0x10B8
#define CHIPID_83C170 0x0005
#define PCI_VENDORID(x) ((x) & 0xFFFF)
#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF)
/* PCI configuration */
#define PCI_CFID 0x00 /* Configuration ID */
#define PCI_CFCS 0x04 /* Configurtion Command/Status */
#define PCI_CFRV 0x08 /* Configuration Revision */
#define PCI_CFLT 0x0c /* Configuration Latency Timer */
#define PCI_CBIO 0x10 /* Configuration Base IO Address */
#define PCI_CBMA 0x14 /* Configuration Base Memory Address */
#define PCI_CFIT 0x3c /* Configuration Interrupt */
#define PCI_CFDA 0x40 /* Configuration Driver Area */
#define PCI_CONF_WRITE(r, v) pci_conf_write(config_id, (r), (v))
#define PCI_CONF_READ(r) pci_conf_read(config_id, (r))
/* EPIC's registers */
#define COMMAND 0x0000
#define INTSTAT 0x0004 /* Interrupt status. See below */
#define INTMASK 0x0008 /* Interrupt mask. See below */
#define GENCTL 0x000C
#define NVCTL 0x0010
#define EECTL 0x0014 /* EEPROM control **/
#define TEST1 0x001C /* XXXXX */
#define CRCCNT 0x0020 /* CRC error counter */
#define ALICNT 0x0024 /* FrameTooLang error counter */
#define MPCNT 0x0028 /* MissedFrames error counters */
#define MIICTL 0x0030
#define MIIDATA 0x0034
#define MIICFG 0x0038
#define IPG 0x003C
#define LAN0 0x0040 /* MAC address */
#define LAN1 0x0044 /* MAC address */
#define LAN2 0x0048 /* MAC address */
#define ID_CHK 0x004C
#define MC0 0x0050 /* Multicast filter table */
#define MC1 0x0054 /* Multicast filter table */
#define MC2 0x0058 /* Multicast filter table */
#define MC3 0x005C /* Multicast filter table */
#define RXCON 0x0060 /* Rx control register */
#define TXCON 0x0070 /* Tx control register */
#define TXSTAT 0x0074
#define PRCDAR 0x0084 /* RxRing bus address */
#define PRSTAT 0x00A4
#define PRCPTHR 0x00B0
#define PTCDAR 0x00C4 /* TxRing bus address */
#define ETXTHR 0x00DC
#define COMMAND_STOP_RX 0x01
#define COMMAND_START_RX 0x02
#define COMMAND_TXQUEUED 0x04
#define COMMAND_RXQUEUED 0x08
#define COMMAND_NEXTFRAME 0x10
#define COMMAND_STOP_TDMA 0x20
#define COMMAND_STOP_RDMA 0x40
#define COMMAND_TXUGO 0x80
/* Tx threshold */
#define TX_FIFO_THRESH 0x80 /* 0x40 or 0x10 */
/* Interrupt register bits */
#define INTSTAT_RCC 0x00000001
#define INTSTAT_HCC 0x00000002
#define INTSTAT_RQE 0x00000004
#define INTSTAT_OVW 0x00000008
#define INTSTAT_RXE 0x00000010
#define INTSTAT_TXC 0x00000020
#define INTSTAT_TCC 0x00000040
#define INTSTAT_TQE 0x00000080
#define INTSTAT_TXU 0x00000100
#define INTSTAT_CNT 0x00000200
#define INTSTAT_PREI 0x00000400
#define INTSTAT_RCT 0x00000800
#define INTSTAT_FATAL 0x00001000 /* One of DPE,APE,PMA,PTA happend */
#define INTSTAT_UNUSED1 0x00002000
#define INTSTAT_UNUSED2 0x00004000
#define INTSTAT_GP2 0x00008000 /* PHY Event */
#define INTSTAT_INT_ACTV 0x00010000
#define INTSTAT_RXIDLE 0x00020000
#define INTSTAT_TXIDLE 0x00040000
#define INTSTAT_RCIP 0x00080000
#define INTSTAT_TCIP 0x00100000
#define INTSTAT_RBE 0x00200000
#define INTSTAT_RCTS 0x00400000
#define INTSTAT_RSV 0x00800000
#define INTSTAT_DPE 0x01000000 /* PCI Fatal error */
#define INTSTAT_APE 0x02000000 /* PCI Fatal error */
#define INTSTAT_PMA 0x04000000 /* PCI Fatal error */
#define INTSTAT_PTA 0x08000000 /* PCI Fatal error */
#define GENCTL_SOFT_RESET 0x00000001
#define GENCTL_ENABLE_INTERRUPT 0x00000002
#define GENCTL_SOFTWARE_INTERRUPT 0x00000004
#define GENCTL_POWER_DOWN 0x00000008
#define GENCTL_ONECOPY 0x00000010
#define GENCTL_BIG_ENDIAN 0x00000020
#define GENCTL_RECEIVE_DMA_PRIORITY 0x00000040
#define GENCTL_TRANSMIT_DMA_PRIORITY 0x00000080
#define GENCTL_RECEIVE_FIFO_THRESHOLD128 0x00000300
#define GENCTL_RECEIVE_FIFO_THRESHOLD96 0x00000200
#define GENCTL_RECEIVE_FIFO_THRESHOLD64 0x00000100
#define GENCTL_RECEIVE_FIFO_THRESHOLD32 0x00000000
#define GENCTL_MEMORY_READ_LINE 0x00000400
#define GENCTL_MEMORY_READ_MULTIPLE 0x00000800
#define GENCTL_SOFTWARE1 0x00001000
#define GENCTL_SOFTWARE2 0x00002000
#define GENCTL_RESET_PHY 0x00004000
#define NVCTL_ENABLE_MEMORY_MAP 0x00000001
#define NVCTL_CLOCK_RUN_SUPPORTED 0x00000002
#define NVCTL_GP1_OUTPUT_ENABLE 0x00000004
#define NVCTL_GP2_OUTPUT_ENABLE 0x00000008
#define NVCTL_GP1 0x00000010
#define NVCTL_GP2 0x00000020
#define NVCTL_CARDBUS_MODE 0x00000040
#define NVCTL_IPG_DELAY_MASK(x) ((x&0xF)<<7)
#define RXCON_SAVE_ERRORED_PACKETS 0x00000001
#define RXCON_RECEIVE_RUNT_FRAMES 0x00000002
#define RXCON_RECEIVE_BROADCAST_FRAMES 0x00000004
#define RXCON_RECEIVE_MULTICAST_FRAMES 0x00000008
#define RXCON_RECEIVE_INVERSE_INDIVIDUAL_ADDRESS_FRAMES 0x00000010
#define RXCON_PROMISCUOUS_MODE 0x00000020
#define RXCON_MONITOR_MODE 0x00000040
#define RXCON_EARLY_RECEIVE_ENABLE 0x00000080
#define RXCON_EXTERNAL_BUFFER_DISABLE 0x00000000
#define RXCON_EXTERNAL_BUFFER_16K 0x00000100
#define RXCON_EXTERNAL_BUFFER_32K 0x00000200
#define RXCON_EXTERNAL_BUFFER_128K 0x00000300
#define TXCON_EARLY_TRANSMIT_ENABLE 0x00000001
#define TXCON_LOOPBACK_DISABLE 0x00000000
#define TXCON_LOOPBACK_MODE_INT 0x00000002
#define TXCON_LOOPBACK_MODE_PHY 0x00000004
#define TXCON_LOOPBACK_MODE 0x00000006
#define TXCON_FULL_DUPLEX 0x00000006
#define TXCON_SLOT_TIME 0x00000078
#define MIICFG_SMI_ENABLE 0x00000010
#define TEST1_CLOCK_TEST 0x00000008
#define TXCON_DEFAULT (TXCON_SLOT_TIME | TXCON_EARLY_TRANSMIT_ENABLE)
#define TRANSMIT_THRESHOLD 0x80
#if defined(EARLY_RX)
#define RXCON_DEFAULT (RXCON_EARLY_RECEIVE_ENABLE | RXCON_SAVE_ERRORED_PACKETS)
#else
#define RXCON_DEFAULT (0)
#endif
/*
* National Semiconductor's DP83840A Registers and bits
*/
#define DP83840_OUI 0x080017
#define DP83840_BMCR 0x00 /* Control register */
#define DP83840_BMSR 0x01 /* Status rgister */
#define DP83840_ANAR 0x04 /* Autonegotiation advertising register */
#define DP83840_LPAR 0x05 /* Link Partner Ability register */
#define DP83840_ANER 0x06 /* Auto-Negotiation Expansion Register */
#define DP83840_PAR 0x19 /* PHY Address Register */
#define DP83840_PHYIDR1 0x02
#define DP83840_PHYIDR2 0x03
#define BMCR_RESET 0x8000
#define BMCR_LOOPBACK 0x4000
#define BMCR_100MBPS 0x2000 /* 10/100 Mbps */
#define BMCR_AUTONEGOTIATION 0x1000 /* ON/OFF */
#define BMCR_POWERDOWN 0x0800
#define BMCR_ISOLATE 0x0400
#define BMCR_RESTART_AUTONEG 0x0200
#define BMCR_FULL_DUPLEX 0x0100
#define BMCR_COL_TEST 0x0080
#define BMSR_100BASE_T4 0x8000
#define BMSR_100BASE_TX_FD 0x4000
#define BMSR_100BASE_TX 0x2000
#define BMSR_10BASE_T_FD 0x1000
#define BMSR_10BASE_T 0x0800
#define BMSR_AUTONEG_COMPLETE 0x0020
#define BMSR_AUTONEG_ABLE 0x0008
#define BMSR_LINK_STATUS 0x0004
#define PAR_FULL_DUPLEX 0x0400
#define ANER_MULTIPLE_LINK_FAULT 0x10
/* ANAR and LPAR have the same bits, define them only once */
#define ANAR_10 0x0020
#define ANAR_10_FD 0x0040
#define ANAR_100_TX 0x0080
#define ANAR_100_TX_FD 0x0100
#define ANAR_100_T4 0x0200
/*
* Quality Semiconductor's QS6612 registers and bits
*/
#define QS6612_OUI 0x006051
#define QS6612_MCTL 17
#define QS6612_INTSTAT 29
#define QS6612_INTMASK 30
#define QS6612_BPCR 31
#define MCTL_T4_PRESENT 0x1000 /* External T4 Enabled, ignored */
/* if AutoNeg is enabled */
#define MCTL_BTEXT 0x0800 /* Reduces 10baset squelch level */
/* for extended cable length */
#define INTSTAT_AN_COMPLETE 0x40 /* Autonegotiation complete */
#define INTSTAT_RF_DETECTED 0x20 /* Remote Fault detected */
#define INTSTAT_LINK_STATUS 0x10 /* Link status changed */
#define INTSTAT_AN_LP_ACK 0x08 /* Autoneg. LP Acknoledge */
#define INTSTAT_PD_FAULT 0x04 /* Parallel Detection Fault */
#define INTSTAT_AN_PAGE 0x04 /* Autoneg. Page Received */
#define INTSTAT_RE_CNT_FULL 0x01 /* Receive Error Counter Full */
#define INTMASK_THUNDERLAN 0x8000 /* Enable interrupts */
/*
* Structures definition and Functions prototypes
*/
/* EPIC's hardware descriptors, must be aligned on dword in memory */
/* NB: to make driver happy, this two structures MUST have thier sizes */
/* be divisor of PAGE_SIZE */
struct epic_tx_desc {
volatile u_int16_t status;
volatile u_int16_t txlength;
volatile u_int32_t bufaddr;
volatile u_int16_t buflength;
volatile u_int16_t control;
volatile u_int32_t next;
};
struct epic_rx_desc {
volatile u_int16_t status;
volatile u_int16_t rxlength;
volatile u_int32_t bufaddr;
volatile u_int32_t buflength;
volatile u_int32_t next;
};
/* This structure defines EPIC's fragment list, maximum number of frags */
/* is 63. Let use maximum, becouse size of struct MUST be divisor of */
/* PAGE_SIZE, and sometimes come mbufs with more then 30 frags */
#define EPIC_MAX_FRAGS 63
struct epic_frag_list {
volatile u_int32_t numfrags;
struct {
volatile u_int32_t fragaddr;
volatile u_int32_t fraglen;
} frag[EPIC_MAX_FRAGS];
volatile u_int32_t pad; /* align on 256 bytes */
};
/* This is driver's structure to define EPIC descriptors */
struct epic_rx_buffer {
struct mbuf * mbuf; /* mbuf receiving packet */
};
struct epic_tx_buffer {
struct mbuf * mbuf; /* mbuf contained packet */
};
/*
* NB: ALIGN OF ABOVE STRUCTURES
* epic_rx_desc, epic_tx_desc, epic_frag_list - must be aligned on dword
*/
/* Driver status structure */
typedef struct {
#if defined(__OpenBSD__)
struct device sc_dev;
void *sc_ih;
bus_space_tag_t sc_st;
bus_space_handle_t sc_sh;
#else /* __FreeBSD__ */
#if defined(EPIC_USEIOSPACE)
u_int32_t iobase;
#else
caddr_t csr;
#endif
#endif
#if !defined(EPIC_NOIFMEDIA)
struct ifmedia ifmedia;
#endif
struct arpcom arpcom;
u_int32_t unit;
struct epic_rx_buffer rx_buffer[RX_RING_SIZE];
struct epic_tx_buffer tx_buffer[TX_RING_SIZE];
/* Each element of array MUST be aligned on dword */
/* and bounded on PAGE_SIZE */
struct epic_rx_desc *rx_desc;
struct epic_tx_desc *tx_desc;
struct epic_frag_list *tx_flist;
u_int32_t flags;
u_int32_t tx_threshold;
u_int32_t txcon;
u_int32_t phyid;
u_int32_t cur_tx;
u_int32_t cur_rx;
u_int32_t dirty_tx;
u_int32_t pending_txs;
void *pool;
} epic_softc_t;
#if defined(__FreeBSD__)
#define EPIC_FORMAT "tx%d"
#define EPIC_ARGS(sc) (sc->unit)
#define sc_if arpcom.ac_if
#define sc_macaddr arpcom.ac_enaddr
#if defined(EPIC_USEIOSPACE)
#define CSR_WRITE_4(sc,reg,val) \
outl( (sc)->iobase + (u_int32_t)(reg), (val) )
#define CSR_WRITE_2(sc,reg,val) \
outw( (sc)->iobase + (u_int32_t)(reg), (val) )
#define CSR_WRITE_1(sc,reg,val) \
outb( (sc)->iobase + (u_int32_t)(reg), (val) )
#define CSR_READ_4(sc,reg) \
inl( (sc)->iobase + (u_int32_t)(reg) )
#define CSR_READ_2(sc,reg) \
inw( (sc)->iobase + (u_int32_t)(reg) )
#define CSR_READ_1(sc,reg) \
inb( (sc)->iobase + (u_int32_t)(reg) )
#else
#define CSR_WRITE_1(sc,reg,val) \
((*(volatile u_int8_t*)((sc)->csr + (u_int32_t)(reg))) = (u_int8_t)(val))
#define CSR_WRITE_2(sc,reg,val) \
((*(volatile u_int16_t*)((sc)->csr + (u_int32_t)(reg))) = (u_int16_t)(val))
#define CSR_WRITE_4(sc,reg,val) \
((*(volatile u_int32_t*)((sc)->csr + (u_int32_t)(reg))) = (u_int32_t)(val))
#define CSR_READ_1(sc,reg) \
(*(volatile u_int8_t*)((sc)->csr + (u_int32_t)(reg)))
#define CSR_READ_2(sc,reg) \
(*(volatile u_int16_t*)((sc)->csr + (u_int32_t)(reg)))
#define CSR_READ_4(sc,reg) \
(*(volatile u_int32_t*)((sc)->csr + (u_int32_t)(reg)))
#endif
#else /* __OpenBSD__ */
#define EPIC_FORMAT "%s"
#define EPIC_ARGS(sc) (sc->sc_dev.dv_xname)
#define sc_if arpcom.ac_if
#define sc_macaddr arpcom.ac_enaddr
#define CSR_WRITE_4(sc,reg,val) \
bus_space_write_4( (sc)->sc_st, (sc)->sc_sh, (reg), (val) )
#define CSR_WRITE_2(sc,reg,val) \
bus_space_write_2( (sc)->sc_st, (sc)->sc_sh, (reg), (val) )
#define CSR_WRITE_1(sc,reg,val) \
bus_space_write_1( (sc)->sc_st, (sc)->sc_sh, (reg), (val) )
#define CSR_READ_4(sc,reg) \
bus_space_read_4( (sc)->sc_st, (sc)->sc_sh, (reg) )
#define CSR_READ_2(sc,reg) \
bus_space_read_2( (sc)->sc_st, (sc)->sc_sh, (reg) )
#define CSR_READ_1(sc,reg) \
bus_space_read_1( (sc)->sc_st, (sc)->sc_sh, (reg) )
#endif
#define PHY_READ_2(sc,reg) epic_read_phy_register(sc,reg)
#define PHY_WRITE_2(sc,reg,val) epic_write_phy_register(sc,reg,val)
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