Scsi - Index of

112 * define one of these if you don't want to - there is a default
113 * routine that is present that should work in most cases. For those
114 * driver authors that have the inclination and ability to write their
115 * own strategy routine, this is where it is specified. Note - the
116 * strategy routine is *ALWAYS* run in the context of the kernel eh
117 * thread. Thus you are guaranteed to *NOT* be in an interrupt
118 * handler when you execute this, and you are also guaranteed to
119 * *NOT* have any other commands being queued while you are in the
120 * strategy routine. When you return from this function, operations
121 * return to normal.
122 *
123 * See scsi_error.c scsi_unjam_host for additional comments about
124 * what this function should and should not be attempting to do.
125 *
126 * Status: REQUIRED (at least one of them)
127 */
128 int (* eh_strategy_handler)(struct Scsi_Host *);
129 int (* eh_abort_handler)(struct scsi_cmnd *);
130 int (* eh_device_reset_handler)(struct scsi_cmnd *);
131 int (* eh_bus_reset_handler)(struct scsi_cmnd *);
132 int (* eh_host_reset_handler)(struct scsi_cmnd *);
133
134 /*
135 * This is an optional routine to notify the host that the scsi
136 * timer just fired. The returns tell the timer routine what to
137 * do about this:
138 *
139 * EH_HANDLED: I fixed the error, please complete the command
140 * EH_RESET_TIMER: I need more time, reset the timer and
141 * begin counting again
142 * EH_NOT_HANDLED Begin normal error recovery
143 *
144 * Status: OPTIONAL
145 */
146 enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
147
148 /*
149 * Before the mid layer attempts to scan for a new device where none
150 * currently exists, it will call this entry in your driver. Should
151 * your driver need to allocate any structs or perform any other init
152 * items in order to send commands to a currently unused target/lun
97
153 * combo, then this is where you can perform those allocations. This
154 * is specifically so that drivers won't have to perform any kind of