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6 .TH CSX_ACCESSCONFIGURATIONREGISTER 9F "Jul 19, 1996"
8 csx_AccessConfigurationRegister \- read or write a PC Card Configuration
13 #include <sys/pccard.h>
17 \fBint32_t\fR \fBcsx_AccessConfigurationRegister\fR(\fBclient_handle_t\fR \fIch\fR,
18 \fBaccess_config_reg_t *\fR\fIacr\fR);
24 Solaris \fBDDI \fRSpecific (Solaris \fBDDI) \fR
32 Client handle returned from \fBcsx_RegisterClient\fR(9F).
41 Pointer to an \fBaccess_config_reg_t\fR structure.
47 This function allows a client to read or write a \fBPC\fRCard Configuration
52 The structure members of \fBaccess_config_reg_t\fR are:
56 uint32_t Socket; /* socket number*/
57 uint32_t Action; /* register access operation*/
58 uint32_t Offset; /* config register offset*/
59 uint32_t Value; /* value read or written*/
65 The fields are defined as follows:
72 Not used in Solaris, but for portability with other Card Services
73 implementations, it should be set to the logical socket number.
82 May be set to \fBCONFIG_REG_READ\fR or \fBCONFIG_REG_WRITE\fR. All other values
83 in the \fBAction\fR field are reserved for future use. If the \fBAction\fR
84 field is set to \fBCONFIG_REG_WRITE,\fR the \fBValue\fR field is written to the
85 specified configuration register. Card Services does not read the configuration
86 register after a write operation. For that reason, the \fBValue\fR field is
87 only updated by a \fBCONFIG_REG_READ\fR request.
96 Specifies the byte offset for the desired configuration register from the \fBPC
97 \fRCard configuration register base specified in
98 \fBcsx_RequestConfiguration\fR(9F).
107 Contains the value read from the \fBPC \fRCard Configuration Register for a
108 read operation. For a write operation, the \fBValue\fR field contains the value
109 to write to the configuration register. As noted above, on return from a write
110 request, the \fBValue\fR field is the value written to the \fBPC \fRCard and
111 not any changed value that may have resulted from the write request (that is,
112 no read after write is performed).
117 A client must be very careful when writing to the \fBCOR \fR(Configuration
118 Option Register) at offset \fB0\fR. This has the potential to change the type
119 of interrupt request generated by the \fBPC \fRCard or place the card in the
120 reset state. Either request may have undefined results. The client should read
121 the register to determine the appropriate setting for the interrupt mode (Bit
122 6) before writing to the register.
125 If a client wants to reset a \fBPC\fRCard, the \fBcsx_ResetFunction\fR(9F)
126 function should be used. Unlike \fBcsx_AccessConfigurationRegister()\fR, the
127 \fBcsx_ResetFunction\fR(9F) function generates a series of event notifications
128 to all clients using the \fBPC \fRCard, so they can re-establish the
129 appropriate card state after the reset operation is complete.
134 \fB\fBCS_SUCCESS\fR\fR
137 Successful operation.
143 \fB\fBCS_BAD_ARGS\fR\fR
146 Specified arguments are invalid. Client specifies an \fBOffset\fR that is out
147 of range or neither \fBCONFIG_REG_READ\fR or \fBCONFIG_REG_WRITE\fR is set.
153 \fB\fBCS_UNSUPPORTED_MODE\fR\fR
156 Client has not called \fBcsx_RequestConfiguration\fR(9F) before calling this
163 \fB\fBCS_BAD_HANDLE\fR\fR
166 Client handle is invalid.
172 \fB\fBCS_NO_CARD\fR\fR
175 No \fBPC \fRcard in socket.
181 \fB\fBCS_UNSUPPORTED_FUNCTION\fR\fR
184 No \fBPCMCIA \fRhardware installed.
190 This function may be called from user or kernel context.
194 \fBcsx_ParseTuple\fR(9F), \fBcsx_RegisterClient\fR(9F),
195 \fBcsx_RequestConfiguration\fR(9F), \fBcsx_ResetFunction\fR(9F)
198 \fIPCCard 95 Standard, PCMCIA/JEIDA\fR