rclanmtl.c

linux和2410结合开发 用他可以生成2410所需的zImage文件

/*
** *************************************************************************
**
**
**     R C L A N M T L . C             $Revision: 6 $
**
**
**  RedCreek I2O LAN Message Transport Layer program module.
**
**  ---------------------------------------------------------------------
**  ---     Copyright (c) 1997-1999, RedCreek Communications Inc.     ---
**  ---                   All rights reserved.                        ---
**  ---------------------------------------------------------------------
**
**  File Description:
**
**  Host side I2O (Intelligent I/O) LAN message transport layer.
**
**  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.

**  This program is distributed in the hope that it will be useful,
**  but WITHOUT ANY WARRANTY; without even the implied warranty of
**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**  GNU General Public License for more details.

**  You should have received a copy of the GNU General Public License
**  along with this program; if not, write to the Free Software
**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** 1998-1999, LAN API was modified and enhanced by Alice Hennessy.
**
** Sometime in 1997, LAN API was written from scratch by Wendell Nichols.
** *************************************************************************
*/

#define DEBUG 1

#define RC_LINUX_MODULE
#include "rclanmtl.h"

 /* RedCreek LAN device Target ID */
#define RC_LAN_TARGET_ID  0x10
 /* RedCreek's OSM default LAN receive Initiator */
#define DEFAULT_RECV_INIT_CONTEXT  0xA17

/*
** I2O message structures
*/

#define    I2O_TID_SZ                                  12
#define    I2O_FUNCTION_SZ                             8

/* Transaction Reply Lists (TRL) Control Word structure */

#define    I2O_TRL_FLAGS_SINGLE_FIXED_LENGTH           0x00
#define    I2O_TRL_FLAGS_SINGLE_VARIABLE_LENGTH        0x40
#define    I2O_TRL_FLAGS_MULTIPLE_FIXED_LENGTH         0x80

/* LAN Class specific functions */

#define    I2O_LAN_PACKET_SEND                         0x3B
#define    I2O_LAN_SDU_SEND                            0x3D
#define    I2O_LAN_RECEIVE_POST                        0x3E
#define    I2O_LAN_RESET                               0x35
#define    I2O_LAN_SHUTDOWN                            0x37

/* Private Class specfic function */
#define    I2O_PRIVATE                                 0xFF

/*  I2O Executive Function Codes.  */

#define    I2O_EXEC_ADAPTER_ASSIGN                     0xB3
#define    I2O_EXEC_ADAPTER_READ                       0xB2
#define    I2O_EXEC_ADAPTER_RELEASE                    0xB5
#define    I2O_EXEC_BIOS_INFO_SET                      0xA5
#define    I2O_EXEC_BOOT_DEVICE_SET                    0xA7
#define    I2O_EXEC_CONFIG_VALIDATE                    0xBB
#define    I2O_EXEC_CONN_SETUP                         0xCA
#define    I2O_EXEC_DEVICE_ASSIGN                      0xB7
#define    I2O_EXEC_DEVICE_RELEASE                     0xB9
#define    I2O_EXEC_HRT_GET                            0xA8
#define    I2O_EXEC_IOP_CLEAR                          0xBE
#define    I2O_EXEC_IOP_CONNECT                        0xC9
#define    I2O_EXEC_IOP_RESET                          0xBD
#define    I2O_EXEC_LCT_NOTIFY                         0xA2
#define    I2O_EXEC_OUTBOUND_INIT                      0xA1
#define    I2O_EXEC_PATH_ENABLE                        0xD3
#define    I2O_EXEC_PATH_QUIESCE                       0xC5
#define    I2O_EXEC_PATH_RESET                         0xD7
#define    I2O_EXEC_STATIC_MF_CREATE                   0xDD
#define    I2O_EXEC_STATIC_MF_RELEASE                  0xDF
#define    I2O_EXEC_STATUS_GET                         0xA0
#define    I2O_EXEC_SW_DOWNLOAD                        0xA9
#define    I2O_EXEC_SW_UPLOAD                          0xAB
#define    I2O_EXEC_SW_REMOVE                          0xAD
#define    I2O_EXEC_SYS_ENABLE                         0xD1
#define    I2O_EXEC_SYS_MODIFY                         0xC1
#define    I2O_EXEC_SYS_QUIESCE                        0xC3
#define    I2O_EXEC_SYS_TAB_SET                        0xA3

 /* Init Outbound Q status */
#define    I2O_EXEC_OUTBOUND_INIT_IN_PROGRESS          0x01
#define    I2O_EXEC_OUTBOUND_INIT_REJECTED             0x02
#define    I2O_EXEC_OUTBOUND_INIT_FAILED               0x03
#define    I2O_EXEC_OUTBOUND_INIT_COMPLETE             0x04

#define    I2O_UTIL_NOP                                0x00

/* I2O Get Status State values */

#define    I2O_IOP_STATE_INITIALIZING                  0x01
#define    I2O_IOP_STATE_RESET                         0x02
#define    I2O_IOP_STATE_HOLD                          0x04
#define    I2O_IOP_STATE_READY                         0x05
#define    I2O_IOP_STATE_OPERATIONAL                   0x08
#define    I2O_IOP_STATE_FAILED                        0x10
#define    I2O_IOP_STATE_FAULTED                       0x11

/* Defines for Request Status Codes:  Table 3-1 Reply Status Codes.  */

#define    I2O_REPLY_STATUS_SUCCESS                    0x00
#define    I2O_REPLY_STATUS_ABORT_DIRTY                0x01
#define    I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER     0x02
#define    I2O_REPLY_STATUS_ABORT_PARTIAL_TRANSFER     0x03
#define    I2O_REPLY_STATUS_ERROR_DIRTY                0x04
#define    I2O_REPLY_STATUS_ERROR_NO_DATA_TRANSFER     0x05
#define    I2O_REPLY_STATUS_ERROR_PARTIAL_TRANSFER     0x06
#define    I2O_REPLY_STATUS_PROCESS_ABORT_DIRTY        0x07
#define    I2O_REPLY_STATUS_PROCESS_ABORT_NO_DATA_TRANSFER   0x08
#define    I2O_REPLY_STATUS_PROCESS_ABORT_PARTIAL_TRANSFER   0x09
#define    I2O_REPLY_STATUS_TRANSACTION_ERROR          0x0A
#define    I2O_REPLY_STATUS_PROGRESS_REPORT            0x80

/* DetailedStatusCode defines for ALL messages: Table 3-2 Detailed Status Codes.*/

#define    I2O_DETAIL_STATUS_SUCCESS                        0x0000
#define    I2O_DETAIL_STATUS_BAD_KEY                        0x0001
#define    I2O_DETAIL_STATUS_CHAIN_BUFFER_TOO_LARGE         0x0002
#define    I2O_DETAIL_STATUS_DEVICE_BUSY                    0x0003
#define    I2O_DETAIL_STATUS_DEVICE_LOCKED                  0x0004
#define    I2O_DETAIL_STATUS_DEVICE_NOT_AVAILABLE           0x0005
#define    I2O_DETAIL_STATUS_DEVICE_RESET                   0x0006
#define    I2O_DETAIL_STATUS_INAPPROPRIATE_FUNCTION         0x0007
#define    I2O_DETAIL_STATUS_INSUFFICIENT_RESOURCE_HARD     0x0008
#define    I2O_DETAIL_STATUS_INSUFFICIENT_RESOURCE_SOFT     0x0009
#define    I2O_DETAIL_STATUS_INVALID_INITIATOR_ADDRESS      0x000A
#define    I2O_DETAIL_STATUS_INVALID_MESSAGE_FLAGS          0x000B
#define    I2O_DETAIL_STATUS_INVALID_OFFSET                 0x000C
#define    I2O_DETAIL_STATUS_INVALID_PARAMETER              0x000D
#define    I2O_DETAIL_STATUS_INVALID_REQUEST                0x000E
#define    I2O_DETAIL_STATUS_INVALID_TARGET_ADDRESS         0x000F
#define    I2O_DETAIL_STATUS_MESSAGE_TOO_LARGE              0x0010
#define    I2O_DETAIL_STATUS_MESSAGE_TOO_SMALL              0x0011
#define    I2O_DETAIL_STATUS_MISSING_PARAMETER              0x0012
#define    I2O_DETAIL_STATUS_NO_SUCH_PAGE                   0x0013
#define    I2O_DETAIL_STATUS_REPLY_BUFFER_FULL              0x0014
#define    I2O_DETAIL_STATUS_TCL_ERROR                      0x0015
#define    I2O_DETAIL_STATUS_TIMEOUT                        0x0016
#define    I2O_DETAIL_STATUS_UNKNOWN_ERROR                  0x0017
#define    I2O_DETAIL_STATUS_UNKNOWN_FUNCTION               0x0018
#define    I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION           0x0019
#define    I2O_DETAIL_STATUS_UNSUPPORTED_VERSION            0x001A

 /* I2O msg header defines for VersionOffset */
#define I2OMSGVER_1_5   0x0001
#define SGL_OFFSET_0    I2OMSGVER_1_5
#define SGL_OFFSET_4    (0x0040 | I2OMSGVER_1_5)
#define TRL_OFFSET_5    (0x0050 | I2OMSGVER_1_5)
#define TRL_OFFSET_6    (0x0060 | I2OMSGVER_1_5)

 /* I2O msg header defines for MsgFlags */
#define MSG_STATIC      0x0100
#define MSG_64BIT_CNTXT 0x0200
#define MSG_MULTI_TRANS 0x1000
#define MSG_FAIL        0x2000
#define MSG_LAST        0x4000
#define MSG_REPLY       0x8000

  /* normal LAN request message MsgFlags and VersionOffset (0x1041) */
#define LAN_MSG_REQST  (MSG_MULTI_TRANS | SGL_OFFSET_4)

 /* minimum size msg */
#define THREE_WORD_MSG_SIZE 0x00030000
#define FOUR_WORD_MSG_SIZE  0x00040000
#define FIVE_WORD_MSG_SIZE  0x00050000
#define SIX_WORD_MSG_SIZE   0x00060000
#define SEVEN_WORD_MSG_SIZE 0x00070000
#define EIGHT_WORD_MSG_SIZE 0x00080000
#define NINE_WORD_MSG_SIZE  0x00090000

/* Special TID Assignments */

#define I2O_IOP_TID   0
#define I2O_HOST_TID  0xB91

 /* RedCreek I2O private message codes */
#define RC_PRIVATE_GET_MAC_ADDR     0x0001/**/	/* OBSOLETE */
#define RC_PRIVATE_SET_MAC_ADDR     0x0002
#define RC_PRIVATE_GET_NIC_STATS    0x0003
#define RC_PRIVATE_GET_LINK_STATUS  0x0004
#define RC_PRIVATE_SET_LINK_SPEED   0x0005
#define RC_PRIVATE_SET_IP_AND_MASK  0x0006
/* #define RC_PRIVATE_GET_IP_AND_MASK  0x0007 *//* OBSOLETE */
#define RC_PRIVATE_GET_LINK_SPEED   0x0008
#define RC_PRIVATE_GET_FIRMWARE_REV 0x0009
/* #define RC_PRIVATE_GET_MAC_ADDR     0x000A */
#define RC_PRIVATE_GET_IP_AND_MASK  0x000B
#define RC_PRIVATE_DEBUG_MSG        0x000C
#define RC_PRIVATE_REPORT_DRIVER_CAPABILITY  0x000D
#define RC_PRIVATE_SET_PROMISCUOUS_MODE  0x000e
#define RC_PRIVATE_GET_PROMISCUOUS_MODE  0x000f
#define RC_PRIVATE_SET_BROADCAST_MODE    0x0010
#define RC_PRIVATE_GET_BROADCAST_MODE    0x0011

#define RC_PRIVATE_REBOOT           0x00FF

/* I2O message header */
typedef struct _I2O_MESSAGE_FRAME {
	U8 VersionOffset;
	U8 MsgFlags;
	U16 MessageSize;
	BF TargetAddress:I2O_TID_SZ;
	BF InitiatorAddress:I2O_TID_SZ;
	BF Function:I2O_FUNCTION_SZ;
	U32 InitiatorContext;
	/* SGL[] */
} I2O_MESSAGE_FRAME, *PI2O_MESSAGE_FRAME;

 /* assumed a 16K minus 256 byte space for outbound queue message frames */
#define MSG_FRAME_SIZE  512
#define NMBR_MSG_FRAMES 30

 /* 
    ** in reserved space right after PAB in host memory is area for returning
    ** values from card 
  */

/*
** typedef NICSTAT
**
** Data structure for NIC statistics retruned from PCI card.  Data copied from
** here to user allocated RCLINKSTATS (see rclanmtl.h) structure.
*/
typedef struct tag_NicStat {
	unsigned long TX_good;
	unsigned long TX_maxcol;
	unsigned long TX_latecol;
	unsigned long TX_urun;
	unsigned long TX_crs;	/* lost carrier sense */
	unsigned long TX_def;	/* transmit deferred */
	unsigned long TX_singlecol;	/* single collisions */
	unsigned long TX_multcol;
	unsigned long TX_totcol;
	unsigned long Rcv_good;
	unsigned long Rcv_CRCerr;
	unsigned long Rcv_alignerr;
	unsigned long Rcv_reserr;	/* rnr'd pkts */
	unsigned long Rcv_orun;
	unsigned long Rcv_cdt;
	unsigned long Rcv_runt;
	unsigned long dump_status;	/* last field directly from the chip */
} NICSTAT, *P_NICSTAT;

#define DUMP_DONE   0x0000A005	/* completed statistical dump */
#define DUMP_CLEAR  0x0000A007	/* completed stat dump and clear counters */

static volatile int msgFlag;

/* local function prototypes */
static void ProcessOutboundI2OMsg (PPAB pPab, U32 phyMsgAddr);
static int FillI2OMsgSGLFromTCB (PU32 pMsg, PRCTCB pXmitCntrlBlock);
static int GetI2OStatus (PPAB pPab);
static int SendI2OOutboundQInitMsg (PPAB pPab);
static int SendEnableSysMsg (PPAB pPab);

/*
** =========================================================================
** RCInitI2OMsgLayer()
**
** Initialize the RedCreek I2O Module and adapter.
**
** Inputs:  dev - the devices net_device struct
**          TransmitCallbackFunction - address of transmit callback function
**          ReceiveCallbackFunction  - address of receive  callback function
**
** private message block is allocated by user.  It must be in locked pages.
** p_msgbuf and p_phymsgbuf point to the same location.  Must be contigous
** memory block of a minimum of 16K byte and long word aligned.
** =========================================================================
*/
RC_RETURN
RCInitI2OMsgLayer (struct net_device *dev,
		   PFNTXCALLBACK TransmitCallbackFunction,
		   PFNRXCALLBACK ReceiveCallbackFunction,
		   PFNCALLBACK RebootCallbackFunction)
{
	int result;
	PPAB pPab;
	PDPA pDpa = dev->priv;
	U32 pciBaseAddr = dev->base_addr;
	PU8 p_msgbuf = pDpa->PLanApiPA;
	PU8 p_phymsgbuf = (PU8) virt_to_bus ((void *) p_msgbuf);

	dprintk
	    ("InitI2O: Adapter:0x%x ATU:0x%x msgbuf:0x%x phymsgbuf:0x%x\n"
	     "TransmitCallbackFunction:0x%x  ReceiveCallbackFunction:0x%x\n",
	     pDpa->id, pciBaseAddr, (u32) p_msgbuf, (u32) p_phymsgbuf,
	     (u32) TransmitCallbackFunction, (u32) ReceiveCallbackFunction);

	/* Check if this interface already initialized - if so, shut it down */
	if (pDpa->pPab != NULL) {
		dprintk (KERN_WARNING
			"pDpa->pPab [%d] != NULL\n",
			pDpa->id);
/*          RCResetLANCard(pDpa->id, 0, (PU32)NULL, (PFNCALLBACK)NULL); */
		pDpa->pPab = NULL;
	}

	/* store adapter instance values in adapter block.
	 * Adapter block is at beginning of message buffer */

	pPab = kmalloc (sizeof (*pPab), GFP_KERNEL);
	if (!pPab) {
		dprintk (KERN_ERR 
				"RCInitI2OMsgLayer: Could not allocate memory for PAB struct!\n");
		result = RC_RTN_MALLOC_ERROR;
		goto err_out;
	}

	memset (pPab, 0, sizeof (*pPab));
	pDpa->pPab = pPab;
	pPab->p_atu = (PATU) pciBaseAddr;
	pPab->pPci45LinBaseAddr = (PU8) pciBaseAddr;

	/* Set outbound message frame addr */
	pPab->outMsgBlockPhyAddr = (U32) p_phymsgbuf;
	pPab->pLinOutMsgBlock = (PU8) p_msgbuf;

	/* store callback function addresses */
	pPab->pTransCallbackFunc = TransmitCallbackFunction;
	pPab->pRecvCallbackFunc = ReceiveCallbackFunction;
	pPab->pRebootCallbackFunc = RebootCallbackFunction;
	pPab->pCallbackFunc = (PFNCALLBACK) NULL;

	/*
	   ** Initialize I2O IOP
	 */
	result = GetI2OStatus (pPab);

	if (result != RC_RTN_NO_ERROR)
		goto err_out_dealloc;

	if (pPab->IOPState == I2O_IOP_STATE_OPERATIONAL) {
		dprintk (KERN_INFO "pPab->IOPState == op: resetting adapter\n");
		RCResetLANCard (dev, 0, (PU32) NULL, (PFNCALLBACK) NULL);
	}

	result = SendI2OOutboundQInitMsg (pPab);

	if (result != RC_RTN_NO_ERROR)
		goto err_out_dealloc;

	result = SendEnableSysMsg (pPab);

	if (result != RC_RTN_NO_ERROR)
		goto err_out_dealloc;

	return RC_RTN_NO_ERROR;

      err_out_dealloc:
	kfree (pPab);
      err_out:
	return result;
}

/*
** =========================================================================
** Disable and Enable I2O interrupts.  I2O interrupts are enabled at Init time
** but can be disabled and re-enabled through these two function calls.
** Packets will still be put into any posted received buffers and packets will
** be sent through RCI2OSendPacket() functions.  Disabling I2O interrupts
** will prevent hardware interrupt to host even though the outbound I2O msg
** queue is not emtpy.
** =========================================================================
*/
#define i960_OUT_POST_Q_INT_BIT        0x0008	/* bit set masks interrupts */

RC_RETURN
RCDisableI2OInterrupts (struct net_device * dev)
{
	PPAB pPab = ((PDPA) dev->priv)->pPab;

	if (pPab == NULL)
		return RC_RTN_ADPTR_NOT_REGISTERED;

	pPab->p_atu->OutIntMask |= i960_OUT_POST_Q_INT_BIT;

	return RC_RTN_NO_ERROR;
}

RC_RETURN
RCEnableI2OInterrupts (struct net_device * dev)
{
	PPAB pPab = ((PDPA) dev->priv)->pPab;

	if (pPab == NULL)
		return RC_RTN_ADPTR_NOT_REGISTERED;

	pPab->p_atu->OutIntMask &= ~i960_OUT_POST_Q_INT_BIT;

	return RC_RTN_NO_ERROR;

}

/*
** =========================================================================
** RCI2OSendPacket()
** =========================================================================
*/
RC_RETURN
RCI2OSendPacket (struct net_device * dev, U32 InitiatorContext,
		 PRCTCB pTransCtrlBlock)
{
	U32 msgOffset;
	PU32 pMsg;
	int size;
	PPAB pPab = ((PDPA) dev->priv)->pPab;

	dprintk ("RCI2OSendPacket()...\n");

	if (pPab == NULL)
		return RC_RTN_ADPTR_NOT_REGISTERED;

	/* get Inbound free Q entry - reading from In Q gets free Q entry */
	/* offset to Msg Frame in PCI msg block */

	msgOffset = pPab->p_atu->InQueue;

	if (msgOffset == 0xFFFFFFFF) {
		dprintk ("RCI2OSendPacket(): Inbound Free Q empty!\n");
		return RC_RTN_FREE_Q_EMPTY;
	}

	/* calc virtual address of msg - virtual already mapped to physical */
	pMsg = (PU32) (pPab->pPci45LinBaseAddr + msgOffset);

	size = FillI2OMsgSGLFromTCB (pMsg + 4, pTransCtrlBlock);

	if (size == -1) {	/* error processing TCB - send NOP msg */
		dprintk ("RCI2OSendPacket(): Error Rrocess TCB!\n");
		pMsg[0] = THREE_WORD_MSG_SIZE | SGL_OFFSET_0;
		pMsg[1] =
		    I2O_UTIL_NOP << 24 | I2O_HOST_TID << 12 | RC_LAN_TARGET_ID;
		return RC_RTN_TCB_ERROR;
	} else {		/* send over msg header */

		pMsg[0] = (size + 4) << 16 | LAN_MSG_REQST;	/* send over message size and flags */
		pMsg[1] =
		    I2O_LAN_PACKET_SEND << 24 | I2O_HOST_TID << 12 |
		    RC_LAN_TARGET_ID;
		pMsg[2] = InitiatorContext;
		pMsg[3] = 0;	/* batch reply */
		/* post to Inbound Post Q */
		pPab->p_atu->InQueue = msgOffset;
		return RC_RTN_NO_ERROR;
	}
}

/*
** =========================================================================
** RCI2OPostRecvBuffer()
**
** inputs:  pBufrCntrlBlock - pointer to buffer control block
**
** returns TRUE if successful in sending message, else FALSE.
** =========================================================================
*/
RC_RETURN
RCPostRecvBuffers (struct net_device * dev, PRCTCB pTransCtrlBlock)
{
	U32 msgOffset;