ReactOS 0.4.15-dev-7677-g8209aa5
inbvport.c
Go to the documentation of this file.
1/*
2 * PROJECT: ReactOS Kernel
3 * LICENSE: BSD - See COPYING.ARM in the top level directory
4 * FILE: ntoskrnl/inbv/inbvport.c
5 * PURPOSE: Serial Port Boot Driver for Headless Terminal Support
6 * PROGRAMMERS: ReactOS Portable Systems Group
7 */
8
9/* INCLUDES ******************************************************************/
10
11#include <ntoskrnl.h>
12#include <debug.h>
13
14/* GLOBALS *******************************************************************/
15
17{
18 {NULL, 0, TRUE},
19 {NULL, 0, TRUE},
20 {NULL, 0, TRUE},
21 {NULL, 0, TRUE}
22};
23
24/* FUNCTIONS *****************************************************************/
25
29{
30 UCHAR Dummy;
31
32 /* Poll a byte from the port */
33 return CpGetByte(&Port[PortId], &Dummy, FALSE, TRUE) == CP_GET_SUCCESS;
34}
35
40{
41 /* Read a byte from the port */
42 return CpGetByte(&Port[PortId], Byte, TRUE, FALSE) == CP_GET_SUCCESS;
43}
44
45VOID
49{
50 /* Send the byte */
51 CpPutByte(&Port[PortId], Byte);
52}
53
54VOID
58{
59 /* Set FIFO as requested */
61}
62
63VOID
66{
67 /* The port is now available */
68 Port[PortId].Address = NULL;
69}
70
75 IN PUCHAR PortAddress,
76 OUT PULONG PortId,
77 IN BOOLEAN IsMMIODevice)
78{
79 /* Not yet supported */
80 ASSERT(IsMMIODevice == FALSE);
81
82#if defined(SARCH_PC98)
83 /* Set default baud rate */
84 if (BaudRate == 0) BaudRate = 9600;
85
86 /* Check if port or address given */
87 if (PortNumber)
88 {
89 /* Pick correct address for port */
90 if (!PortAddress)
91 {
92 if (PortNumber == 1)
93 {
94 PortAddress = (PUCHAR)0x30;
95 }
96 else
97 {
98 PortAddress = (PUCHAR)0x238;
99 PortNumber = 2;
100 }
101 }
102 }
103 else
104 {
105 /* Pick correct port for address */
106 PortAddress = (PUCHAR)0x30;
107 if (CpDoesPortExist(PortAddress))
108 {
109 PortNumber = 1;
110 }
111 else
112 {
113 PortAddress = (PUCHAR)0x238;
114 if (!CpDoesPortExist(PortAddress))
115 return FALSE;
116
117 PortNumber = 2;
118 }
119 }
120#else
121 /* Set default baud rate */
122 if (BaudRate == 0) BaudRate = 19200;
123
124 /* Check if port or address given */
125 if (PortNumber)
126 {
127 /* Pick correct address for port */
128 if (!PortAddress)
129 {
130 switch (PortNumber)
131 {
132 case 1:
133 PortAddress = (PUCHAR)0x3F8;
134 break;
135
136 case 2:
137 PortAddress = (PUCHAR)0x2F8;
138 break;
139
140 case 3:
141 PortAddress = (PUCHAR)0x3E8;
142 break;
143
144 default:
145 PortNumber = 4;
146 PortAddress = (PUCHAR)0x2E8;
147 }
148 }
149 }
150 else
151 {
152 /* Pick correct port for address */
153 PortAddress = (PUCHAR)0x2F8;
154 if (CpDoesPortExist(PortAddress))
155 {
156 PortNumber = 2;
157 }
158 else
159 {
160 PortAddress = (PUCHAR)0x3F8;
161 if (!CpDoesPortExist(PortAddress)) return FALSE;
162 PortNumber = 1;
163 }
164 }
165#endif
166
167 /* Initialize the port unless it's already up, and then return it */
168 if (Port[PortNumber - 1].Address) return FALSE;
169
170 CpInitialize(&Port[PortNumber - 1], PortAddress, BaudRate);
171 *PortId = PortNumber - 1;
172
173 return TRUE;
174}
175
176/* EOF */
unsigned char BOOLEAN
VOID NTAPI CpPutByte(IN PCPPORT Port, IN UCHAR Byte)
Definition: cport.c:303
NTSTATUS NTAPI CpInitialize(IN PCPPORT Port, IN PUCHAR Address, IN ULONG BaudRate)
Definition: cport.c:85
#define CP_GET_SUCCESS
Definition: cportlib.h:18
VOID NTAPI CpEnableFifo(IN PUCHAR Address, IN BOOLEAN Enable)
Definition: cport.c:51
USHORT NTAPI CpGetByte(IN PCPPORT Port, OUT PUCHAR Byte, IN BOOLEAN Wait, IN BOOLEAN Poll)
Definition: cport.c:253
BOOLEAN NTAPI CpDoesPortExist(IN PUCHAR Address)
Definition: cport.c:224
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
unsigned char Byte
Definition: zlib.h:37
VOID NTAPI InbvPortTerminate(IN ULONG PortId)
Definition: inbvport.c:65
CPPORT Port[4]
Definition: inbvport.c:16
VOID NTAPI InbvPortPutByte(IN ULONG PortId, IN UCHAR Byte)
Definition: inbvport.c:47
BOOLEAN NTAPI InbvPortInitialize(IN ULONG BaudRate, IN ULONG PortNumber, IN PUCHAR PortAddress, OUT PULONG PortId, IN BOOLEAN IsMMIODevice)
Definition: inbvport.c:73
VOID NTAPI InbvPortEnableFifo(IN ULONG PortId, IN BOOLEAN Enable)
Definition: inbvport.c:56
BOOLEAN NTAPI InbvPortGetByte(IN ULONG PortId, OUT PUCHAR Byte)
Definition: inbvport.c:38
BOOLEAN NTAPI InbvPortPollOnly(IN ULONG PortId)
Definition: inbvport.c:28
#define ASSERT(a)
Definition: mode.c:44
_In_ ULONGLONG _In_ ULONGLONG _In_ BOOLEAN Enable
Definition: ntddpcm.h:142
static WCHAR Address[46]
Definition: ping.c:68
ULONG PortNumber
Definition: storport.c:18
PUCHAR Address
Definition: cportlib.h:29
uint32_t * PULONG
Definition: typedefs.h:59
#define NTAPI
Definition: typedefs.h:36
#define IN
Definition: typedefs.h:39
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
#define OUT
Definition: typedefs.h:40
unsigned char UCHAR
Definition: xmlstorage.h:181