Revision b03c720211ea5ec027ad85f1e147e3d8122429ba authored by Pyun YongHyeon on 14 January 2010, 21:54:20 UTC, committed by Pyun YongHyeon on 14 January 2010, 21:54:20 UTC
Add bus_dma(9) and endianness support to ste(4). o Sorted includes and added missing header files. o Added basic endianness support. In theory ste(4) should work on any architectures. o Remove the use of contigmalloc(9), contigfree(9) and vtophys(9). o Added 8 byte alignment limitation of TX/RX descriptor. o Added 1 byte alignment requirement for TX/RX buffers. o ste(4) controllers does not support DAC. Limit DMA address space to be within 32bit address. o Added spare DMA map to gracefully recover from DMA map failure. o Removed dead code for checking STE_RXSTAT_DMADONE bit. The bit was already checked in each iteration of loop so it can't be true. o Added second argument count to ste_rxeof(). It is used to limit number of iterations done in RX handler. ATM polling is the only consumer. o Removed ste_rxeoc() which was added to address RX stuck issue (cvs rev 1.66). Unlike TX descriptors, ST201 supports chaining descriptors to form a ring for RX descriptors. If RX descriptor chaining is not supported it's possible for controller to stop receiving incoming frames once controller pass the end of RX descriptor which in turn requires driver post new RX descriptors to receive more frames. For TX descriptors which does not support chaning, we exactly do manual chaining in driver by concatenating new descriptors to the end of previous TX chain. Maybe the workaround was borrowed from other drivers that does not support RX descriptor chaining, which is not valid for ST201 controllers. I still have no idea how this address RX stuck issue and I can't reproduce the RX stuck issue on DFE-550TX controller. o Removed hw.ste_rxsyncs sysctl as the workaround was removed. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Reimplemented optimized ste_encap(). o Simplified TX logic of ste_start_locked(). o Added comments for TFD/RFD requirements. o Increased number of RX descriptors to 128 from 64. 128 gave much better performance than 64 under high network loads.
1 parent d982c88
dirent.h
/*-
* Copyright (c) 1989, 1993
* The Regents of the University of California. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)dirent.h 8.2 (Berkeley) 7/28/94
* $FreeBSD$
*/
#ifndef _DIRENT_H_
#define _DIRENT_H_
/*
* The kernel defines the format of directory entries returned by
* the getdirentries(2) system call.
*/
#include <sys/cdefs.h>
#include <sys/dirent.h>
#if __BSD_VISIBLE || __XSI_VISIBLE
/*
* XXX this is probably illegal in the __XSI_VISIBLE case, but brings us closer
* to the specification.
*/
#define d_ino d_fileno /* backward and XSI compatibility */
#endif
#if __BSD_VISIBLE
#include <sys/_null.h>
/* definitions for library routines operating on directories. */
#define DIRBLKSIZ 1024
struct _telldir; /* see telldir.h */
struct pthread_mutex;
/* structure describing an open directory. */
typedef struct _dirdesc {
int dd_fd; /* file descriptor associated with directory */
long dd_loc; /* offset in current buffer */
long dd_size; /* amount of data returned by getdirentries */
char *dd_buf; /* data buffer */
int dd_len; /* size of data buffer */
long dd_seek; /* magic cookie returned by getdirentries */
long dd_rewind; /* magic cookie for rewinding */
int dd_flags; /* flags for readdir */
struct pthread_mutex *dd_lock; /* lock */
struct _telldir *dd_td; /* telldir position recording */
} DIR;
#define dirfd(dirp) ((dirp)->dd_fd)
/* flags for opendir2 */
#define DTF_HIDEW 0x0001 /* hide whiteout entries */
#define DTF_NODUP 0x0002 /* don't return duplicate names */
#define DTF_REWIND 0x0004 /* rewind after reading union stack */
#define __DTF_READALL 0x0008 /* everything has been read */
#else /* !__BSD_VISIBLE */
typedef void * DIR;
#endif /* __BSD_VISIBLE */
#ifndef _KERNEL
__BEGIN_DECLS
#if __BSD_VISIBLE
DIR *__opendir2(const char *, int);
int alphasort(const void *, const void *);
int getdents(int, char *, int);
int getdirentries(int, char *, int, long *);
#endif
DIR *opendir(const char *);
struct dirent *
readdir(DIR *);
#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 500
int readdir_r(DIR *, struct dirent *, struct dirent **);
#endif
void rewinddir(DIR *);
#if __BSD_VISIBLE
int scandir(const char *, struct dirent ***,
int (*)(struct dirent *), int (*)(const void *, const void *));
#endif
#if __XSI_VISIBLE
void seekdir(DIR *, long);
long telldir(DIR *);
#endif
int closedir(DIR *);
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_DIRENT_H_ */
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