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59 #include <scsi/libsas.h>
63 /* This is the timeout value for the SATA phy to wait for a SIGNATURE FIS
64 * before restarting the starting state machine. Technically, the old parallel
65 * ATA specification required up to 30 seconds for a device to issue its
66 * signature FIS as a result of a soft reset. Now we see that devices respond
67 * generally within 15 seconds, but we'll use 25 for now.
69 #define SCIC_SDS_SIGNATURE_FIS_TIMEOUT 25000
71 /* This is the timeout for the SATA OOB/SN because the hardware does not
72 * recognize a hot plug after OOB signal but before the SN signals. We need to
73 * make sure after a hotplug timeout if we have not received the speed event
74 * notification from the hardware that we restart the hardware OOB state
77 #define SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT 250
80 * isci_phy - hba local phy infrastructure
82 * @protocol: attached device protocol
83 * @phy_index: physical index relative to the controller (0-3)
84 * @bcn_received_while_port_unassigned: bcn to report after port association
85 * @sata_timer: timeout SATA signature FIS arrival
88 struct sci_base_state_machine sm;
89 struct isci_port *owning_port;
90 enum sas_linkrate max_negotiated_speed;
91 enum sas_protocol protocol;
93 bool bcn_received_while_port_unassigned;
94 bool is_in_link_training;
95 struct sci_timer sata_timer;
96 struct scu_transport_layer_registers __iomem *transport_layer_registers;
97 struct scu_link_layer_registers __iomem *link_layer_registers;
98 struct asd_sas_phy sas_phy;
99 u8 sas_addr[SAS_ADDR_SIZE];
101 struct sas_identify_frame iaf;
102 struct dev_to_host_fis fis;
106 static inline struct isci_phy *to_iphy(struct asd_sas_phy *sas_phy)
108 struct isci_phy *iphy = container_of(sas_phy, typeof(*iphy), sas_phy);
117 * The SAS specification indicates the start bit shall
119 * 1. This implementation will have the start bit set
120 * to 0 if the PHY CAPABILITIES were either not
121 * received or speed negotiation failed.
126 u8 req_logical_linkrate:4;
141 /* this data structure reflects the link layer transmit identification reg */
142 struct sci_phy_proto {
162 * struct sci_phy_properties - This structure defines the properties common to
163 * all phys that can be retrieved.
167 struct sci_phy_properties {
169 * This field specifies the port that currently contains the
170 * supplied phy. This field may be set to NULL
171 * if the phy is not currently contained in a port.
173 struct isci_port *iport;
176 * This field specifies the link rate at which the phy is
177 * currently operating.
179 enum sas_linkrate negotiated_link_rate;
182 * This field specifies the index of the phy in relation to other
183 * phys within the controller. This index is zero relative.
189 * struct sci_sas_phy_properties - This structure defines the properties,
190 * specific to a SAS phy, that can be retrieved.
194 struct sci_sas_phy_properties {
196 * This field delineates the Identify Address Frame received
197 * from the remote end point.
199 struct sas_identify_frame rcvd_iaf;
202 * This field delineates the Phy capabilities structure received
203 * from the remote end point.
205 struct sci_phy_cap rcvd_cap;
210 * struct sci_sata_phy_properties - This structure defines the properties,
211 * specific to a SATA phy, that can be retrieved.
215 struct sci_sata_phy_properties {
217 * This field delineates the signature FIS received from the
220 struct dev_to_host_fis signature_fis;
223 * This field specifies to the user if a port selector is connected
224 * on the specified phy.
226 bool is_port_selector_present;
231 * enum sci_phy_counter_id - This enumeration depicts the various pieces of
232 * optional information that can be retrieved for a specific phy.
236 enum sci_phy_counter_id {
238 * This PHY information field tracks the number of frames received.
240 SCIC_PHY_COUNTER_RECEIVED_FRAME,
243 * This PHY information field tracks the number of frames transmitted.
245 SCIC_PHY_COUNTER_TRANSMITTED_FRAME,
248 * This PHY information field tracks the number of DWORDs received.
250 SCIC_PHY_COUNTER_RECEIVED_FRAME_WORD,
253 * This PHY information field tracks the number of DWORDs transmitted.
255 SCIC_PHY_COUNTER_TRANSMITTED_FRAME_DWORD,
258 * This PHY information field tracks the number of times DWORD
259 * synchronization was lost.
261 SCIC_PHY_COUNTER_LOSS_OF_SYNC_ERROR,
264 * This PHY information field tracks the number of received DWORDs with
265 * running disparity errors.
267 SCIC_PHY_COUNTER_RECEIVED_DISPARITY_ERROR,
270 * This PHY information field tracks the number of received frames with a
271 * CRC error (not including short or truncated frames).
273 SCIC_PHY_COUNTER_RECEIVED_FRAME_CRC_ERROR,
276 * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT)
277 * primitives received.
279 SCIC_PHY_COUNTER_RECEIVED_DONE_ACK_NAK_TIMEOUT,
282 * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT)
283 * primitives transmitted.
285 SCIC_PHY_COUNTER_TRANSMITTED_DONE_ACK_NAK_TIMEOUT,
288 * This PHY information field tracks the number of times the inactivity
289 * timer for connections on the phy has been utilized.
291 SCIC_PHY_COUNTER_INACTIVITY_TIMER_EXPIRED,
294 * This PHY information field tracks the number of DONE (CREDIT TIMEOUT)
295 * primitives received.
297 SCIC_PHY_COUNTER_RECEIVED_DONE_CREDIT_TIMEOUT,
300 * This PHY information field tracks the number of DONE (CREDIT TIMEOUT)
301 * primitives transmitted.
303 SCIC_PHY_COUNTER_TRANSMITTED_DONE_CREDIT_TIMEOUT,
306 * This PHY information field tracks the number of CREDIT BLOCKED
307 * primitives received.
308 * @note Depending on remote device implementation, credit blocks
309 * may occur regularly.
311 SCIC_PHY_COUNTER_RECEIVED_CREDIT_BLOCKED,
314 * This PHY information field contains the number of short frames
315 * received. A short frame is simply a frame smaller then what is
316 * allowed by either the SAS or SATA specification.
318 SCIC_PHY_COUNTER_RECEIVED_SHORT_FRAME,
321 * This PHY information field contains the number of frames received after
322 * credit has been exhausted.
324 SCIC_PHY_COUNTER_RECEIVED_FRAME_WITHOUT_CREDIT,
327 * This PHY information field contains the number of frames received after
328 * a DONE has been received.
330 SCIC_PHY_COUNTER_RECEIVED_FRAME_AFTER_DONE,
333 * This PHY information field contains the number of times the phy
334 * failed to achieve DWORD synchronization during speed negotiation.
336 SCIC_PHY_COUNTER_SN_DWORD_SYNC_ERROR
340 * enum sci_phy_states - phy state machine states
341 * @SCI_PHY_INITIAL: Simply the initial state for the base domain state
343 * @SCI_PHY_STOPPED: phy has successfully been stopped. In this state
344 * no new IO operations are permitted on this phy.
345 * @SCI_PHY_STARTING: the phy is in the process of becomming ready. In
346 * this state no new IO operations are permitted on
348 * @SCI_PHY_SUB_INITIAL: Initial state
349 * @SCI_PHY_SUB_AWAIT_OSSP_EN: Wait state for the hardware OSSP event
351 * @SCI_PHY_SUB_AWAIT_SAS_SPEED_EN: Wait state for the PHY speed
353 * @SCI_PHY_SUB_AWAIT_IAF_UF: Wait state for the IAF Unsolicited frame
355 * @SCI_PHY_SUB_AWAIT_SAS_POWER: Wait state for the request to consume
357 * @SCI_PHY_SUB_AWAIT_SATA_POWER: Wait state for request to consume
359 * @SCI_PHY_SUB_AWAIT_SATA_PHY_EN: Wait state for the SATA PHY
361 * @SCI_PHY_SUB_AWAIT_SATA_SPEED_EN: Wait for the SATA PHY speed
363 * @SCI_PHY_SUB_AWAIT_SIG_FIS_UF: Wait state for the SIGNATURE FIS
364 * unsolicited frame notification
365 * @SCI_PHY_SUB_FINAL: Exit state for this state machine
366 * @SCI_PHY_READY: phy is now ready. Thus, the user is able to perform
367 * IO operations utilizing this phy as long as it is
368 * currently part of a valid port. This state is
369 * entered from the STARTING state.
370 * @SCI_PHY_RESETTING: phy is in the process of being reset. In this
371 * state no new IO operations are permitted on this
372 * phy. This state is entered from the READY state.
373 * @SCI_PHY_FINAL: Simply the final state for the base phy state
376 #define PHY_STATES {\
381 C(PHY_SUB_AWAIT_OSSP_EN),\
382 C(PHY_SUB_AWAIT_SAS_SPEED_EN),\
383 C(PHY_SUB_AWAIT_IAF_UF),\
384 C(PHY_SUB_AWAIT_SAS_POWER),\
385 C(PHY_SUB_AWAIT_SATA_POWER),\
386 C(PHY_SUB_AWAIT_SATA_PHY_EN),\
387 C(PHY_SUB_AWAIT_SATA_SPEED_EN),\
388 C(PHY_SUB_AWAIT_SIG_FIS_UF),\
396 enum sci_phy_states PHY_STATES;
399 void sci_phy_construct(
400 struct isci_phy *iphy,
401 struct isci_port *iport,
404 struct isci_port *phy_get_non_dummy_port(struct isci_phy *iphy);
406 void sci_phy_set_port(
407 struct isci_phy *iphy,
408 struct isci_port *iport);
410 enum sci_status sci_phy_initialize(
411 struct isci_phy *iphy,
412 struct scu_transport_layer_registers __iomem *transport_layer_registers,
413 struct scu_link_layer_registers __iomem *link_layer_registers);
415 enum sci_status sci_phy_start(
416 struct isci_phy *iphy);
418 enum sci_status sci_phy_stop(
419 struct isci_phy *iphy);
421 enum sci_status sci_phy_reset(
422 struct isci_phy *iphy);
425 struct isci_phy *iphy);
427 void sci_phy_setup_transport(
428 struct isci_phy *iphy,
431 enum sci_status sci_phy_event_handler(
432 struct isci_phy *iphy,
435 enum sci_status sci_phy_frame_handler(
436 struct isci_phy *iphy,
439 enum sci_status sci_phy_consume_power_handler(
440 struct isci_phy *iphy);
442 void sci_phy_get_sas_address(
443 struct isci_phy *iphy,
444 struct sci_sas_address *sas_address);
446 void sci_phy_get_attached_sas_address(
447 struct isci_phy *iphy,
448 struct sci_sas_address *sas_address);
450 struct sci_phy_proto;
451 void sci_phy_get_protocols(
452 struct isci_phy *iphy,
453 struct sci_phy_proto *protocols);
454 enum sas_linkrate sci_phy_linkrate(struct isci_phy *iphy);
457 void isci_phy_init(struct isci_phy *iphy, struct isci_host *ihost, int index);
458 int isci_phy_control(struct asd_sas_phy *phy, enum phy_func func, void *buf);
460 #endif /* !defined(_ISCI_PHY_H_) */