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
tgmath.h
/*-
* Copyright (c) 2004 Stefan Farfeleder.
* 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.
*
* $FreeBSD$
*/
#ifndef _TGMATH_H_
#define _TGMATH_H_
#include <complex.h>
#include <math.h>
/*
* This implementation of <tgmath.h> requires two implementation-dependent
* macros to be defined:
* __tg_impl_simple(x, y, z, fn, fnf, fnl, ...)
* Invokes fnl() if the corresponding real type of x, y or z is long
* double, fn() if it is double or any has an integer type, and fnf()
* otherwise.
* __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...)
* Invokes [c]fnl() if the corresponding real type of x, y or z is long
* double, [c]fn() if it is double or any has an integer type, and
* [c]fnf() otherwise. The function with the 'c' prefix is called if
* any of x, y or z is a complex number.
* Both macros call the chosen function with all additional arguments passed
* to them, as given by __VA_ARGS__.
*
* Note that these macros cannot be implemented with C's ?: operator,
* because the return type of the whole expression would incorrectly be long
* double complex regardless of the argument types.
*/
#if __GNUC_PREREQ__(3, 1)
#define __tg_type(e, t) __builtin_types_compatible_p(__typeof__(e), t)
#define __tg_type3(e1, e2, e3, t) \
(__tg_type(e1, t) || __tg_type(e2, t) || __tg_type(e3, t))
#define __tg_type_corr(e1, e2, e3, t) \
(__tg_type3(e1, e2, e3, t) || __tg_type3(e1, e2, e3, t _Complex))
#define __tg_integer(e1, e2, e3) \
(((__typeof__(e1))1.5 == 1) || ((__typeof__(e2))1.5 == 1) || \
((__typeof__(e3))1.5 == 1))
#define __tg_is_complex(e1, e2, e3) \
(__tg_type3(e1, e2, e3, float _Complex) || \
__tg_type3(e1, e2, e3, double _Complex) || \
__tg_type3(e1, e2, e3, long double _Complex) || \
__tg_type3(e1, e2, e3, __typeof__(_Complex_I)))
#define __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) \
__builtin_choose_expr(__tg_type_corr(x, y, z, long double), \
fnl(__VA_ARGS__), __builtin_choose_expr( \
__tg_type_corr(x, y, z, double) || __tg_integer(x, y, z),\
fn(__VA_ARGS__), fnf(__VA_ARGS__)))
#define __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) \
__builtin_choose_expr(__tg_is_complex(x, y, z), \
__tg_impl_simple(x, y, z, cfn, cfnf, cfnl, __VA_ARGS__), \
__tg_impl_simple(x, y, z, fn, fnf, fnl, __VA_ARGS__))
#else /* __GNUC__ */
#error "<tgmath.h> not implemented for this compiler"
#endif /* !__GNUC__ */
/* Macros to save lots of repetition below */
#define __tg_simple(x, fn) \
__tg_impl_simple(x, x, x, fn, fn##f, fn##l, x)
#define __tg_simple2(x, y, fn) \
__tg_impl_simple(x, x, y, fn, fn##f, fn##l, x, y)
#define __tg_simplev(x, fn, ...) \
__tg_impl_simple(x, x, x, fn, fn##f, fn##l, __VA_ARGS__)
#define __tg_full(x, fn) \
__tg_impl_full(x, x, x, fn, fn##f, fn##l, c##fn, c##fn##f, c##fn##l, x)
/* 7.22#4 -- These macros expand to real or complex functions, depending on
* the type of their arguments. */
#define acos(x) __tg_full(x, acos)
#define asin(x) __tg_full(x, asin)
#define atan(x) __tg_full(x, atan)
#define acosh(x) __tg_full(x, acosh)
#define asinh(x) __tg_full(x, asinh)
#define atanh(x) __tg_full(x, atanh)
#define cos(x) __tg_full(x, cos)
#define sin(x) __tg_full(x, sin)
#define tan(x) __tg_full(x, tan)
#define cosh(x) __tg_full(x, cosh)
#define sinh(x) __tg_full(x, sinh)
#define tanh(x) __tg_full(x, tanh)
#define exp(x) __tg_full(x, exp)
#define log(x) __tg_full(x, log)
#define pow(x, y) __tg_impl_full(x, x, y, pow, powf, powl, \
cpow, cpowf, cpowl, x, y)
#define sqrt(x) __tg_full(x, sqrt)
/* "The corresponding type-generic macro for fabs and cabs is fabs." */
#define fabs(x) __tg_impl_full(x, x, x, fabs, fabsf, fabsl, \
cabs, cabsf, cabsl, x)
/* 7.22#5 -- These macros are only defined for arguments with real type. */
#define atan2(x, y) __tg_simple2(x, y, atan2)
#define cbrt(x) __tg_simple(x, cbrt)
#define ceil(x) __tg_simple(x, ceil)
#define copysign(x, y) __tg_simple2(x, y, copysign)
#define erf(x) __tg_simple(x, erf)
#define erfc(x) __tg_simple(x, erfc)
#define exp2(x) __tg_simple(x, exp2)
#define expm1(x) __tg_simple(x, expm1)
#define fdim(x, y) __tg_simple2(x, y, fdim)
#define floor(x) __tg_simple(x, floor)
#define fma(x, y, z) __tg_impl_simple(x, y, z, fma, fmaf, fmal, x, y, z)
#define fmax(x, y) __tg_simple2(x, y, fmax)
#define fmin(x, y) __tg_simple2(x, y, fmin)
#define fmod(x, y) __tg_simple2(x, y, fmod)
#define frexp(x, y) __tg_simplev(x, frexp, x, y)
#define hypot(x, y) __tg_simple2(x, y, hypot)
#define ilogb(x) __tg_simple(x, ilogb)
#define ldexp(x, y) __tg_simplev(x, ldexp, x, y)
#define lgamma(x) __tg_simple(x, lgamma)
#define llrint(x) __tg_simple(x, llrint)
#define llround(x) __tg_simple(x, llround)
#define log10(x) __tg_simple(x, log10)
#define log1p(x) __tg_simple(x, log1p)
#define log2(x) __tg_simple(x, log2)
#define logb(x) __tg_simple(x, logb)
#define lrint(x) __tg_simple(x, lrint)
#define lround(x) __tg_simple(x, lround)
#define nearbyint(x) __tg_simple(x, nearbyint)
#define nextafter(x, y) __tg_simple2(x, y, nextafter)
#define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y)
#define remainder(x, y) __tg_simple2(x, y, remainder)
#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquo, remquof, \
remquol, x, y, z)
#define rint(x) __tg_simple(x, rint)
#define round(x) __tg_simple(x, round)
#define scalbn(x, y) __tg_simplev(x, scalbn, x, y)
#define scalbln(x, y) __tg_simplev(x, scalbln, x, y)
#define tgamma(x) __tg_simple(x, tgamma)
#define trunc(x) __tg_simple(x, trunc)
/* 7.22#6 -- These macros always expand to complex functions. */
#define carg(x) __tg_simple(x, carg)
#define cimag(x) __tg_simple(x, cimag)
#define conj(x) __tg_simple(x, conj)
#define cproj(x) __tg_simple(x, cproj)
#define creal(x) __tg_simple(x, creal)
#endif /* !_TGMATH_H_ */
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