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56 #ifndef _SCI_BASE_PORT_H_
57 #define _SCI_BASE_PORT_H_
59 #include "sci_base_state_machine.h"
60 #include "sci_object.h"
63 * enum sci_base_port_states - This enumeration depicts all the states for the
64 * common port state machine.
68 enum sci_base_port_states {
70 * This state indicates that the port has successfully been stopped.
71 * In this state no new IO operations are permitted.
72 * This state is entered from the STOPPING state.
74 SCI_BASE_PORT_STATE_STOPPED,
77 * This state indicates that the port is in the process of stopping.
78 * In this state no new IO operations are permitted, but existing IO
79 * operations are allowed to complete.
80 * This state is entered from the READY state.
82 SCI_BASE_PORT_STATE_STOPPING,
85 * This state indicates the port is now ready. Thus, the user is
86 * able to perform IO operations on this port.
87 * This state is entered from the STARTING state.
89 SCI_BASE_PORT_STATE_READY,
92 * This state indicates the port is in the process of performing a hard
93 * reset. Thus, the user is unable to perform IO operations on this
95 * This state is entered from the READY state.
97 SCI_BASE_PORT_STATE_RESETTING,
100 * This state indicates the port has failed a reset request. This state
101 * is entered when a port reset request times out.
102 * This state is entered from the RESETTING state.
104 SCI_BASE_PORT_STATE_FAILED,
106 SCI_BASE_PORT_MAX_STATES
111 * struct sci_base_port - The base port object abstracts the fields common to
112 * all SCI port objects.
116 struct sci_base_port {
118 * The field specifies that the parent object for the base controller
119 * is the base object itself.
121 struct sci_base_object parent;
124 * This field contains the information for the base port state machine.
126 struct sci_base_state_machine state_machine;
131 typedef enum sci_status (*SCI_BASE_PORT_HANDLER_T)(
132 struct sci_base_port *
135 typedef enum sci_status (*SCI_BASE_PORT_PHY_HANDLER_T)(
136 struct sci_base_port *,
137 struct sci_base_phy *
140 typedef enum sci_status (*SCI_BASE_PORT_RESET_HANDLER_T)(
141 struct sci_base_port *,
146 * struct sci_base_port_state_handler - This structure contains all of the
147 * state handler methods common to base port state machines. Handler
148 * methods provide the ability to change the behavior for user requests or
149 * transitions depending on the state the machine is in.
153 struct sci_base_port_state_handler {
155 * The start_handler specifies the method invoked when a user attempts to
158 SCI_BASE_PORT_HANDLER_T start_handler;
161 * The stop_handler specifies the method invoked when a user attempts to
164 SCI_BASE_PORT_HANDLER_T stop_handler;
167 * The destruct_handler specifies the method invoked when attempting to
170 SCI_BASE_PORT_HANDLER_T destruct_handler;
173 * The reset_handler specifies the method invoked when a user attempts to
176 SCI_BASE_PORT_RESET_HANDLER_T reset_handler;
179 * The add_phy_handler specifies the method invoked when a user attempts to
180 * add another phy into the port.
182 SCI_BASE_PORT_PHY_HANDLER_T add_phy_handler;
185 * The remove_phy_handler specifies the method invoked when a user
186 * attempts to remove a phy from the port.
188 SCI_BASE_PORT_PHY_HANDLER_T remove_phy_handler;
193 * sci_base_port_construct() - Construct the base port object
194 * @this_port: This parameter specifies the base port to be constructed.
195 * @state_table: This parameter specifies the table of state definitions to be
196 * utilized for the domain state machine.
199 void sci_base_port_construct(
200 struct sci_base_port *this_port,
201 const struct sci_base_state *state_table);
203 #endif /* _SCI_BASE_PORT_H_ */