platforms/pseries/papr-vpd.c

30 #define RTAS_IBM_GET_VPD_START_OVER -4 /* VPD changed, restart call sequence. */
36  * @sequence:  In: Sequence number. Out: Next sequence number.
43 	u32 sequence;  member
58  * sequence should be in progress at any time; starting a new sequence
59  * will disrupt any sequence already in progress. Serialization of VPD
63  * calls are needed to complete the sequence.
84 				 params->sequence);  in rtas_ibm_get_vpd()
98 		params->sequence = rets[0];  in rtas_ibm_get_vpd()
210  * Internal VPD sequence APIs. A VPD sequence is a series of calls to
211  * ibm,get-vpd for a given location code. The sequence ends when an
217  * struct vpd_sequence - State for managing a VPD sequence.
218  * @error:  Shall be zero as long as the sequence has not encountered an error,
228  * vpd_sequence_begin() - Begin a VPD retrieval sequence.
229  * @seq:      Uninitialized sequence state.
233  * sequence. Callers must pass @seq to vpd_sequence_end() regardless
234  * of whether the sequence succeeds.
260 			.sequence = 1,  in vpd_sequence_begin()
266  * vpd_sequence_end() - Finalize a VPD retrieval sequence.
267  * @seq: Sequence state.
278  * vpd_sequence_should_stop() - Determine whether a VPD retrieval sequence
280  * @seq: VPD sequence state.
282  * Examines the sequence error state and outputs of the last call to
283  * ibm,get-vpd to determine whether the sequence in progress should
286  * Return: True if the sequence has encountered an error or if all VPD for
287  *         this sequence has been retrieved. False otherwise.
346  * papr_vpd_run_sequence() - Run a single VPD retrieval sequence.
392 	 * EAGAIN means the sequence errored with a -4 (VPD changed)  in papr_vpd_retrieve()
394 	 * sequence. PAPR+ v2.13 R1–7.3.20–5 indicates that this  in papr_vpd_retrieve()