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7 .TH CSX_REQUESTIRQ 9F "Jul 19, 1996"
9 csx_RequestIRQ, csx_ReleaseIRQ \- request or release IRQ resource
13 #include <sys/pccard.h>
17 \fBint32_t\fR \fBcsx_RequestIRQ\fR(\fBclient_handle_t\fR \fIch\fR, \fBirq_req_t *\fR\fIir\fR);
22 \fBint32_t\fR \fBcsx_ReleaseIRQ\fR(\fBclient_handle_t\fR \fIch\fR, \fBirq_req_t *\fR\fIir\fR);
28 Solaris \fBDDI\fR Specific (Solaris \fBDDI\fR)
36 Client handle returned from \fBcsx_RegisterClient\fR(9F).
45 Pointer to an \fBirq_req_t\fR structure.
51 The function \fBcsx_RequestIRQ()\fR requests an \fBIRQ\fR resource and
52 registers the client's \fBIRQ\fR handler with Card Services.
55 If a client requires an \fBIRQ\fR,\fBcsx_RequestIRQ()\fR must be called to
56 request an \fBIRQ\fR resource as well as to register the client's \fBIRQ\fR
57 handler with Card Services. The client will not receive callbacks at the
58 \fBIRQ\fR callback handler until \fBcsx_RequestConfiguration\fR(9F) or
59 \fBcsx_ModifyConfiguration\fR(9F) has successfully returned when either of
60 these functions are called with the \fBCONF_ENABLE_IRQ_STEERING\fR bit set.
63 The function \fBcsx_ReleaseIRQ()\fR releases a previously requested \fBIRQ\fR
67 The Card Services \fBIRQ\fR resource list is adjusted by
68 \fBcsx_ReleaseIRQ()\fR. Depending on the adapter hardware, the host bus
69 \fBIRQ\fR connection might also be disabled. Client \fBIRQ\fR handlers always
70 run above lock level and so should take care to perform only Solaris operations
71 that are appropriate for an above-lock-level \fBIRQ\fR handler.
74 \fBcsx_RequestIRQ()\fR fails if it has already been called without a
75 corresponding \fBcsx_ReleaseIRQ()\fR.
79 The structure members of \fBirq_req_t\fR are:
83 uint32_t Socket; /* socket number */
84 uint32_t Attributes; /* IRQ attribute flags */
85 csfunction_t *irq_handler; /* IRQ handler */
86 void *irq_handler_arg; /* IRQ handler argument */
87 ddi_iblock_cookie_t *iblk_cookie; /* IRQ interrupt
89 ddi_idevice_cookie_t *idev_cookie; /* IRQ interrupt device
96 The fields are defined as follows:
103 Not used in Solaris, but for portability with other Card Services
104 implementations, it should be set to the logical socket number.
110 \fB\fBAttributes\fR \fR
113 This field is bit-mapped. It specifies details about the type of \fBIRQ\fR
114 desired by the client. The following bits are defined:
118 \fB\fBIRQ_TYPE_EXCLUSIVE\fR\fR
121 \fBIRQ\fR is exclusive to this socket. This bit must be set. It indicates that
122 the system IRQ is dedicated to this PC Card.
130 \fB\fBirq_handler\fR \fR
133 The client \fBIRQ\fR callback handler entry point is passed in the
134 \fBirq_handler\fR field.
140 \fB\fBirq_handler_arg\fR \fR
143 The client can use the \fBirq_handler_arg\fR field to pass client-specific data
144 to the client \fBIRQ\fR callback handler.
150 \fB\fBiblk_cookie\fR \fR
154 \fB\fBidev_cookie\fR \fR
157 These fields must be used by the client to set up mutexes that are used in the
158 client's \fBIRQ\fR callback handler.
163 For a specific \fBcsx_ReleaseIRQ()\fR call, the values in the \fBirq_req_t\fR
164 structure must be the same as those returned from the previous
165 \fBcsx_RequestIRQ()\fR call; otherwise, \fBCS_BAD_ARGS\fR is returned and no
166 changes are made to Card Services resources or the socket and adapter hardware.
171 \fB\fBCS_SUCCESS\fR \fR
174 Successful operation.
180 \fB\fBCS_BAD_ARGS\fR \fR
183 \fBIRQ\fR description does not match allocation.
189 \fB\fBCS_BAD_ATTRIBUTE\fR \fR
192 \fBIRQ_TYPE_EXCLUSIVE\fR not set, or an unsupported or reserved bit is set.
198 \fB\fBCS_BAD_HANDLE\fR \fR
201 Client handle is invalid or \fBcsx_RequestConfiguration\fR(9F) not done.
207 \fB\fBCS_BAD_IRQ\fR \fR
210 Unable to allocate \fBIRQ\fR resources.
216 \fB\fBCS_IN_USE\fR \fR
219 \fBcsx_RequestIRQ()\fR already done or a previous \fBcsx_RequestIRQ()\fR has
220 not been done for a corresponding \fBcsx_ReleaseIRQ()\fR.
226 \fB\fBCS_CONFIGURATION_LOCKED\fR \fR
229 \fBcsx_RequestConfiguration\fR(9F) already done or
230 \fBcsx_ReleaseConfiguration\fR(9F) has not been done.
236 \fB\fBCS_NO_CARD\fR \fR
239 No \fBPC\fR Card in socket.
245 \fB\fBCS_UNSUPPORTED_FUNCTION\fR \fR
248 No \fBPCMCIA\fR hardware installed.
254 These functions may be called from user or kernel context.
258 \fBcsx_ReleaseConfiguration\fR(9F), \fBcsx_RequestConfiguration\fR(9F)
261 \fIPC Card Card 95 Standard\fR, PCMCIA/JEIDA