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/******************************************************************************
*
* (C)Copyright 1998,1999 SysKonnect,
* a business unit of Schneider & Koch & Co. Datensysteme GmbH.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* The information in this file is provided "AS IS" without warranty.
*
******************************************************************************/
#ifndef _HWM_
#define _HWM_
#include "h/mbuf.h"
/*
* MACRO for DMA synchronization:
* The descriptor 'desc' is flushed for the device 'flag'.
* Devices are the CPU (DDI_DMA_SYNC_FORCPU) and the
* adapter (DDI_DMA_SYNC_FORDEV).
*
* 'desc' Pointer to a Rx or Tx descriptor.
* 'flag' Flag for direction (view for CPU or DEVICE) that
* should be synchronized.
*
* Empty macros and defines are specified here. The real macro
* is os-specific and should be defined in osdef1st.h.
*/
#ifndef DRV_BUF_FLUSH
#define DRV_BUF_FLUSH(desc,flag)
#define DDI_DMA_SYNC_FORCPU
#define DDI_DMA_SYNC_FORDEV
#endif
/*
* hardware modul dependent receive modes
*/
#define RX_ENABLE_PASS_SMT 21
#define RX_DISABLE_PASS_SMT 22
#define RX_ENABLE_PASS_NSA 23
#define RX_DISABLE_PASS_NSA 24
#define RX_ENABLE_PASS_DB 25
#define RX_DISABLE_PASS_DB 26
#define RX_DISABLE_PASS_ALL 27
#define RX_DISABLE_LLC_PROMISC 28
#define RX_ENABLE_LLC_PROMISC 29
#ifndef DMA_RD
#define DMA_RD 1 /* memory -> hw */
#endif
#ifndef DMA_WR
#define DMA_WR 2 /* hw -> memory */
#endif
#define SMT_BUF 0x80
/*
* bits of the frame status byte
*/
#define EN_IRQ_EOF 0x02 /* get IRQ after end of frame transmission */
#define LOC_TX 0x04 /* send frame to the local SMT */
#define LAST_FRAG 0x08 /* last TxD of the frame */
#define FIRST_FRAG 0x10 /* first TxD of the frame */
#define LAN_TX 0x20 /* send frame to network if set */
#define RING_DOWN 0x40 /* error: unable to send, ring down */
#define OUT_OF_TXD 0x80 /* error: not enough TxDs available */
#ifndef NULL
#define NULL 0
#endif
#ifdef LITTLE_ENDIAN
#define HWM_REVERSE(x) (x)
#else
#define HWM_REVERSE(x) ((((x)<<24L)&0xff000000L) + \
(((x)<< 8L)&0x00ff0000L) + \
(((x)>> 8L)&0x0000ff00L) + \
(((x)>>24L)&0x000000ffL))
#endif
#define C_INDIC (1L<<25)
#define A_INDIC (1L<<26)
#define RD_FS_LOCAL 0x80
/*
* DEBUG FLAGS
*/
#define DEBUG_SMTF 1
#define DEBUG_SMT 2
#define DEBUG_ECM 3
#define DEBUG_RMT 4
#define DEBUG_CFM 5
#define DEBUG_PCM 6
#define DEBUG_SBA 7
#define DEBUG_ESS 8
#define DB_HWM_RX 10
#define DB_HWM_TX 11
#define DB_HWM_GEN 12
struct s_mbuf_pool {
#ifndef MB_OUTSIDE_SMC
SMbuf mb[MAX_MBUF] ; /* mbuf pool */
#endif
SMbuf *mb_start ; /* points to the first mb */
SMbuf *mb_free ; /* free queue */
} ;
struct hwm_r {
/*
* hardware modul specific receive variables
*/
u_int len ; /* length of the whole frame */
char *mb_pos ; /* SMbuf receive position */
} ;
struct hw_modul {
/*
* All hardware modul specific variables
*/
struct s_mbuf_pool mbuf_pool ;
struct hwm_r r ;
union s_fp_descr volatile *descr_p ; /* points to the desriptor area */
u_short pass_SMT ; /* pass SMT frames */
u_short pass_NSA ; /* pass all NSA frames */
u_short pass_DB ; /* pass Direct Beacon Frames */
u_short pass_llc_promisc ; /* pass all llc frames (default ON) */
SMbuf *llc_rx_pipe ; /* points to the first queued llc fr */
SMbuf *llc_rx_tail ; /* points to the last queued llc fr */
int queued_rx_frames ; /* number of queued frames */
SMbuf *txd_tx_pipe ; /* points to first mb in the txd ring */
SMbuf *txd_tx_tail ; /* points to last mb in the txd ring */
int queued_txd_mb ; /* number of SMT MBufs in txd ring */
int rx_break ; /* rev. was breaked because ind. off */
int leave_isr ; /* leave fddi_isr immedeately if set */
int isr_flag ; /* set, when HWM is entered from isr */
/*
* varaibles for the current transmit frame
*/
struct s_smt_tx_queue *tx_p ; /* pointer to the transmit queue */
u_long tx_descr ; /* tx descriptor for FORMAC+ */
int tx_len ; /* tx frame length */
SMbuf *tx_mb ; /* SMT tx MBuf pointer */
char *tx_data ; /* data pointer to the SMT tx Mbuf */
int detec_count ; /* counter for out of RxD condition */
u_long rx_len_error ; /* rx len FORMAC != sum of fragments */
} ;
/*
* DEBUG structs and macros
*/
#ifdef DEBUG
struct os_debug {
int hwm_rx ;
int hwm_tx ;
int hwm_gen ;
} ;
#endif
#ifdef DEBUG
#ifdef DEBUG_BRD
#define DB_P smc->debug
#else
#define DB_P debug
#endif
#define DB_RX(a,b,c,lev) if (DB_P.d_os.hwm_rx >= (lev)) printf(a,b,c)
#define DB_TX(a,b,c,lev) if (DB_P.d_os.hwm_tx >= (lev)) printf(a,b,c)
#define DB_GEN(a,b,c,lev) if (DB_P.d_os.hwm_gen >= (lev)) printf(a,b,c)
#else /* DEBUG */
#define DB_RX(a,b,c,lev)
#define DB_TX(a,b,c,lev)
#define DB_GEN(a,b,c,lev)
#endif /* DEBUG */
#ifndef SK_BREAK
#define SK_BREAK()
#endif
/*
* HWM Macros
*/
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_TX_PHYS)
* u_long HWM_GET_TX_PHYS(txd)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to read
* the physical address of the specified TxD.
*
* para txd pointer to the TxD
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_TX_PHYS(txd) (u_long)AIX_REVERSE((txd)->txd_tbadr)
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_TX_LEN)
* int HWM_GET_TX_LEN(txd)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to read
* the fragment length of the specified TxD
*
* para rxd pointer to the TxD
*
* return the length of the fragment in bytes
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_TX_LEN(txd) ((int)AIX_REVERSE((txd)->txd_tbctrl)& RD_LENGTH)
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_TX_USED)
* txd *HWM_GET_TX_USED(smc,queue)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to get the
* number of used TxDs for the queue, specified by the index.
*
* para queue the number of the send queue: Can be specified by
* QUEUE_A0, QUEUE_S or (frame_status & QUEUE_A0)
*
* return number of used TxDs for this send queue
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_TX_USED(smc,queue) (int) (smc)->hw.fp.tx_q[queue].tx_used
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_CURR_TXD)
* txd *HWM_GET_CURR_TXD(smc,queue)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to get the
* pointer to the TxD which points to the current queue put
* position.
*
* para queue the number of the send queue: Can be specified by
* QUEUE_A0, QUEUE_S or (frame_status & QUEUE_A0)
*
* return pointer to the current TxD
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_CURR_TXD(smc,queue) (struct s_smt_fp_txd volatile *)\
(smc)->hw.fp.tx_q[queue].tx_curr_put
/*
* BEGIN_MANUAL_ENTRY(HWM_TX_CHECK)
* void HWM_TX_CHECK(smc,frame_status,low_water)
*
* function MACRO (hardware module, hwmtm.h)
* This macro is invoked by the OS-specific before it left it's
* driver_send function. This macro calls mac_drv_clear_txd
* if the free TxDs of the current transmit queue is equal or
* lower than the given low water mark.
*
* para frame_status status of the frame, see design description
* low_water low water mark of free TxD's
*
* END_MANUAL_ENTRY
*/
#ifndef HWM_NO_FLOW_CTL
#define HWM_TX_CHECK(smc,frame_status,low_water) {\
if ((low_water)>=(smc)->hw.fp.tx_q[(frame_status)&QUEUE_A0].tx_free) {\
mac_drv_clear_txd(smc) ;\
}\
}
#else
#define HWM_TX_CHECK(smc,frame_status,low_water) mac_drv_clear_txd(smc)
#endif
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_RX_FRAG_LEN)
* int HWM_GET_RX_FRAG_LEN(rxd)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to read
* the fragment length of the specified RxD
*
* para rxd pointer to the RxD
*
* return the length of the fragment in bytes
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_RX_FRAG_LEN(rxd) ((int)AIX_REVERSE((rxd)->rxd_rbctrl)& \
RD_LENGTH)
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_RX_PHYS)
* u_long HWM_GET_RX_PHYS(rxd)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to read
* the physical address of the specified RxD.
*
* para rxd pointer to the RxD
*
* return the RxD's physical pointer to the data fragment
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_RX_PHYS(rxd) (u_long)AIX_REVERSE((rxd)->rxd_rbadr)
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_RX_USED)
* int HWM_GET_RX_USED(smc)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to get
* the count of used RXDs in receive queue 1.
*
* return the used RXD count of receive queue 1
*
* NOTE: Remember, because of an ASIC bug at least one RXD should be unused
* in the descriptor ring !
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_RX_USED(smc) ((int)(smc)->hw.fp.rx_q[QUEUE_R1].rx_used)
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_RX_FREE)
* int HWM_GET_RX_FREE(smc)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to get
* the rxd_free count of receive queue 1.
*
* return the rxd_free count of receive queue 1
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_RX_FREE(smc) ((int)(smc)->hw.fp.rx_q[QUEUE_R1].rx_free-1)
/*
* BEGIN_MANUAL_ENTRY(HWM_GET_CURR_RXD)
* rxd *HWM_GET_CURR_RXD(smc)
*
* function MACRO (hardware module, hwmtm.h)
* This macro may be invoked by the OS-specific module to get the
* pointer to the RxD which points to the current queue put
* position.
*
* return pointer to the current RxD
*
* END_MANUAL_ENTRY
*/
#define HWM_GET_CURR_RXD(smc) (struct s_smt_fp_rxd volatile *)\
(smc)->hw.fp.rx_q[QUEUE_R1].rx_curr_put
/*
* BEGIN_MANUAL_ENTRY(HWM_RX_CHECK)
* void HWM_RX_CHECK(smc,low_water)
*
* function MACRO (hardware module, hwmtm.h)
* This macro is invoked by the OS-specific before it left the
* function mac_drv_rx_complete. This macro calls mac_drv_fill_rxd
* if the number of used RxDs is equal or lower than the
* the given low water mark.
*
* para low_water low water mark of used RxD's
*
* END_MANUAL_ENTRY
*/
#ifndef HWM_NO_FLOW_CTL
#define HWM_RX_CHECK(smc,low_water) {\
if ((low_water) >= (smc)->hw.fp.rx_q[QUEUE_R1].rx_used) {\
mac_drv_fill_rxd(smc) ;\
}\
}
#else
#define HWM_RX_CHECK(smc,low_water) mac_drv_fill_rxd(smc)
#endif
#ifndef HWM_EBASE
#define HWM_EBASE 500
#endif
#define HWM_E0001 HWM_EBASE + 1
#define HWM_E0001_MSG "HWM: Wrong size of s_rxd_os struct"
#define HWM_E0002 HWM_EBASE + 2
#define HWM_E0002_MSG "HWM: Wrong size of s_txd_os struct"
#define HWM_E0003 HWM_EBASE + 3
#define HWM_E0003_MSG "HWM: smt_free_mbuf() called with NULL pointer"
#define HWM_E0004 HWM_EBASE + 4
#define HWM_E0004_MSG "HWM: Parity error rx queue 1"
#define HWM_E0005 HWM_EBASE + 5
#define HWM_E0005_MSG "HWM: Encoding error rx queue 1"
#define HWM_E0006 HWM_EBASE + 6
#define HWM_E0006_MSG "HWM: Encoding error async tx queue"
#define HWM_E0007 HWM_EBASE + 7
#define HWM_E0007_MSG "HWM: Encoding error sync tx queue"
#define HWM_E0008 HWM_EBASE + 8
#define HWM_E0008_MSG ""
#define HWM_E0009 HWM_EBASE + 9
#define HWM_E0009_MSG "HWM: Out of RxD condition detected"
#define HWM_E0010 HWM_EBASE + 10
#define HWM_E0010_MSG "HWM: A protocol layer has tried to send a frame with an invalid frame control"
#define HWM_E0011 HWM_EBASE + 11
#define HWM_E0011_MSG "HWM: mac_drv_clear_tx_queue was called although the hardware wasn't stopped"
#define HWM_E0012 HWM_EBASE + 12
#define HWM_E0012_MSG "HWM: mac_drv_clear_rx_queue was called although the hardware wasn't stopped"
#define HWM_E0013 HWM_EBASE + 13
#define HWM_E0013_MSG "HWM: mac_drv_repair_descr was called although the hardware wasn't stopped"
#endif
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