ReactOS 0.4.15-dev-8109-gd7be748
backoff.c File Reference
#include "nvnet.h"
#include "debug.h"
Include dependency graph for backoff.c:

Go to the source code of this file.

Macros

#define NDEBUG
 
#define BACKOFF_SEEDSET_ROWS   8
 
#define BACKOFF_SEEDSET_LFSRS   15
 
#define REVERSE_SEED(s)   ((((s) & 0xF00) >> 8) | ((s) & 0x0F0) | (((s) & 0x00F) << 8))
 

Functions

VOID NvNetBackoffSetSlotTime (_In_ PNVNET_ADAPTER Adapter)
 
VOID NvNetBackoffReseed (_In_ PNVNET_ADAPTER Adapter)
 
VOID NvNetBackoffReseedEx (_In_ PNVNET_ADAPTER Adapter)
 

Variables

static const ULONG NvpMainSeedSet [BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS]
 
static const ULONG NvpGearSeedSet [BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS]
 

Macro Definition Documentation

◆ BACKOFF_SEEDSET_LFSRS

#define BACKOFF_SEEDSET_LFSRS   15

Definition at line 26 of file backoff.c.

◆ BACKOFF_SEEDSET_ROWS

#define BACKOFF_SEEDSET_ROWS   8

Definition at line 25 of file backoff.c.

◆ NDEBUG

#define NDEBUG

Definition at line 20 of file backoff.c.

◆ REVERSE_SEED

#define REVERSE_SEED (   s)    ((((s) & 0xF00) >> 8) | ((s) & 0x0F0) | (((s) & 0x00F) << 8))

Definition at line 28 of file backoff.c.

Function Documentation

◆ NvNetBackoffReseed()

VOID NvNetBackoffReseed ( _In_ PNVNET_ADAPTER  Adapter)

Definition at line 91 of file backoff.c.

93{
94 ULONG SlotTime;
95 BOOLEAN RestartTransmitter = FALSE;
97
98 NDIS_DbgPrint(MIN_TRACE, ("()\n"));
99
100 if ((Sample.LowPart & NVREG_SLOTTIME_MASK) == 0)
101 {
102 Sample.LowPart = 8;
103 }
104
105 SlotTime = NV_READ(Adapter, NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
106 SlotTime |= Sample.LowPart & NVREG_SLOTTIME_MASK;
107
109 {
110 RestartTransmitter = TRUE;
111 NvNetStopTransmitter(Adapter);
112 }
113 NvNetStopReceiver(Adapter);
114
115 NV_WRITE(Adapter, NvRegSlotTime, SlotTime);
116
117 if (RestartTransmitter)
118 {
119 NvNetStartTransmitter(Adapter);
120 }
121 NvNetStartReceiver(Adapter);
122}
unsigned char BOOLEAN
#define MIN_TRACE
Definition: debug.h:14
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define NDIS_DbgPrint(_t_, _x_)
Definition: debug.h:40
LARGE_INTEGER NTAPI KeQueryPerformanceCounter(IN PLARGE_INTEGER PerformanceFreq)
Definition: timer.c:138
VOID NvNetStartTransmitter(_In_ PNVNET_ADAPTER Adapter)
Definition: nic.c:130
VOID NvNetStartReceiver(_In_ PNVNET_ADAPTER Adapter)
Definition: nic.c:104
VOID NvNetStopReceiver(_In_ PNVNET_ADAPTER Adapter)
Definition: nic.c:147
VOID NvNetStopTransmitter(_In_ PNVNET_ADAPTER Adapter)
Definition: nic.c:178
#define NVREG_XMITCTL_START
Definition: nic.h:95
#define NVREG_SLOTTIME_MASK
Definition: nic.h:137
@ NvRegSlotTime
Definition: nic.h:131
@ NvRegTransmitterControl
Definition: nic.h:94
FORCEINLINE VOID NV_WRITE(_In_ PNVNET_ADAPTER Adapter, _In_ NVNET_REGISTER Register, _In_ ULONG Value)
Definition: nvnet.h:646
FORCEINLINE ULONG NV_READ(_In_ PNVNET_ADAPTER Adapter, _In_ NVNET_REGISTER Register)
Definition: nvnet.h:656
uint32_t ULONG
Definition: typedefs.h:59
ULONG LowPart
Definition: typedefs.h:106

Referenced by ProcessTransmitDescriptors32(), ProcessTransmitDescriptors64(), and ProcessTransmitDescriptorsLegacy().

◆ NvNetBackoffReseedEx()

VOID NvNetBackoffReseedEx ( _In_ PNVNET_ADAPTER  Adapter)

Definition at line 125 of file backoff.c.

127{
128 LARGE_INTEGER Sample;
129 ULONG Seed[3], ReversedSeed[2], CombinedSeed, SeedSet;
130 ULONG i, Temp;
131
132 NDIS_DbgPrint(MIN_TRACE, ("()\n"));
133
135 Seed[0] = Sample.LowPart & 0x0FFF;
136 if (Seed[0] == 0)
137 {
138 Seed[0] = 0x0ABC;
139 }
140
142 Seed[1] = Sample.LowPart & 0x0FFF;
143 if (Seed[1] == 0)
144 {
145 Seed[1] = 0x0ABC;
146 }
147 ReversedSeed[0] = REVERSE_SEED(Seed[1]);
148
150 Seed[2] = Sample.LowPart & 0x0FFF;
151 if (Seed[2] == 0)
152 {
153 Seed[2] = 0x0ABC;
154 }
155 ReversedSeed[1] = REVERSE_SEED(Seed[2]);
156
157 CombinedSeed = ((Seed[0] ^ ReversedSeed[0]) << 12) | (Seed[1] ^ ReversedSeed[1]);
158 if ((CombinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
159 {
160 CombinedSeed |= 8;
161 }
162 if ((CombinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
163 {
164 CombinedSeed |= 8 << NVREG_BKOFFCTRL_GEAR;
165 }
166
167 /* No need to disable transmitter here */
169 Temp |= CombinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
170 Temp |= CombinedSeed >> NVREG_BKOFFCTRL_GEAR;
171 NV_WRITE(Adapter, NvRegBackOffControl, Temp);
172
173 /* Setup seeds for all gear LFSRs */
175 SeedSet = Sample.LowPart % BACKOFF_SEEDSET_ROWS;
176 for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; ++i)
177 {
179 Temp |= NvpMainSeedSet[SeedSet][i - 1] & NVREG_BKOFFCTRL_SEED_MASK;
180 Temp |= (NvpGearSeedSet[SeedSet][i - 1] & NVREG_BKOFFCTRL_SEED_MASK)
182 NV_WRITE(Adapter, NvRegBackOffControl, Temp);
183 }
184}
static const ULONG NvpGearSeedSet[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS]
Definition: backoff.c:42
#define BACKOFF_SEEDSET_ROWS
Definition: backoff.c:25
#define REVERSE_SEED(s)
Definition: backoff.c:28
#define BACKOFF_SEEDSET_LFSRS
Definition: backoff.c:26
static const ULONG NvpMainSeedSet[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS]
Definition: backoff.c:30
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define NVREG_BKOFFCTRL_SEED_MASK
Definition: nic.h:171
#define NVREG_BKOFFCTRL_GEAR
Definition: nic.h:173
#define NVREG_BKOFFCTRL_DEFAULT
Definition: nic.h:170
#define NVREG_BKOFFCTRL_SELECT
Definition: nic.h:172
@ NvRegBackOffControl
Definition: nic.h:169

Referenced by NvNetBackoffSetSlotTime(), ProcessTransmitDescriptors32(), and ProcessTransmitDescriptors64().

◆ NvNetBackoffSetSlotTime()

VOID NvNetBackoffSetSlotTime ( _In_ PNVNET_ADAPTER  Adapter)

Definition at line 58 of file backoff.c.

60{
62
63 PAGED_CODE();
64
65 if ((Sample.LowPart & NVREG_SLOTTIME_MASK) == 0)
66 {
67 Sample.LowPart = 8;
68 }
69
70 if (Adapter->Features & (DEV_HAS_HIGH_DMA | DEV_HAS_LARGEDESC))
71 {
72 if (Adapter->Features & DEV_HAS_GEAR_MODE)
73 {
75 NvNetBackoffReseedEx(Adapter);
76 }
77 else
78 {
81 }
82 }
83 else
84 {
85 NV_WRITE(Adapter, NvRegSlotTime,
87 }
88}
#define PAGED_CODE()
VOID NvNetBackoffReseedEx(_In_ PNVNET_ADAPTER Adapter)
Definition: backoff.c:125
#define NVREG_SLOTTIME_DEFAULT
Definition: nic.h:136
#define DEV_HAS_LARGEDESC
Definition: nic.h:20
#define NVREG_SLOTTIME_10_100_FULL
Definition: nic.h:133
#define DEV_HAS_GEAR_MODE
Definition: nic.h:39
#define NVREG_SLOTTIME_LEGBF_ENABLED
Definition: nic.h:132
#define DEV_HAS_HIGH_DMA
Definition: nic.h:21

Referenced by NvNetInitNIC().

Variable Documentation

◆ NvpGearSeedSet

Initial value:
=
{
{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
{251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
{351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395}
}

Definition at line 42 of file backoff.c.

Referenced by NvNetBackoffReseedEx().

◆ NvpMainSeedSet

Initial value:
=
{
{145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
{245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
{145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
{245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
{266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
{266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
{366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800, 84},
{466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184}
}

Definition at line 30 of file backoff.c.

Referenced by NvNetBackoffReseedEx().