Lines Matching full:vpd

3 #define pr_fmt(fmt) "papr-vpd: " fmt
19 #include <asm/papr-vpd.h>
22 #include <uapi/asm/papr-vpd.h>
25  * Function-specific return values for ibm,get-vpd, derived from PAPR+
26  * v2.13 7.3.20 "ibm,get-vpd RTAS Call".
28 #define RTAS_IBM_GET_VPD_COMPLETE    0 /* All VPD has been retrieved. */
29 #define RTAS_IBM_GET_VPD_MORE_DATA   1 /* More VPD is available. */
30 #define RTAS_IBM_GET_VPD_START_OVER -4 /* VPD changed, restart call sequence. */
33  * struct rtas_ibm_get_vpd_params - Parameters (in and out) for ibm,get-vpd.
37  * @written:   Out: Bytes written by ibm,get-vpd to @work_area.
49  * rtas_ibm_get_vpd() - Call ibm,get-vpd to fill a work area buffer.
52  * Calls ibm,get-vpd until it errors or successfully deposits data
57  * to retrieve all the VPD for the provided location code. Only one
59  * will disrupt any sequence already in progress. Serialization of VPD
113 		pr_err_ratelimited("unexpected ibm,get-vpd status %d\n", fwrc);  in rtas_ibm_get_vpd()
122  * Internal VPD "blob" APIs for accumulating ibm,get-vpd results into
207  * Internal VPD sequence APIs. A VPD sequence is a series of calls to
208  * ibm,get-vpd for a given location code. The sequence ends when an
209  * error is encountered or all VPD for the location code has been
214  * struct vpd_sequence - State for managing a VPD sequence.
225  * vpd_sequence_begin() - Begin a VPD retrieval sequence.
227  * @loc_code: Location code that defines the scope of the VPD to return.
229  * Initializes @seq with the resources necessary to carry out a VPD
263  * vpd_sequence_end() - Finalize a VPD retrieval sequence.
275  * vpd_sequence_should_stop() - Determine whether a VPD retrieval sequence
277  * @seq: VPD sequence state.
280  * ibm,get-vpd to determine whether the sequence in progress should
283  * Return: True if the sequence has encountered an error or if all VPD for
337  * Higher-level VPD retrieval code below. These functions use the
339  * VPD handles for consumption by user space.
343  * papr_vpd_run_sequence() - Run a single VPD retrieval sequence.
344  * @loc_code: Location code that defines the scope of VPD to return.
373  * papr_vpd_retrieve() - Return the VPD for a location code.
374  * @loc_code: Location code that defines the scope of VPD to return.
376  * Run VPD sequences against @loc_code until a blob is successfully
381  * Return: A fully populated VPD blob when successful. Encoded error
389 	 * EAGAIN means the sequence errored with a -4 (VPD changed)  in papr_vpd_retrieve()
390 	 * status from ibm,get-vpd, and we should attempt a new  in papr_vpd_retrieve()
401 		pr_info_ratelimited("VPD changed during retrieval, retrying\n");  in papr_vpd_retrieve()
445  * papr_vpd_create_handle() - Create a fd-based handle for reading VPD.
446  * @ulc: Location code in user memory; defines the scope of the VPD to
450  * @ulc and instantiates an immutable VPD "blob" for it. The blob is
454  * The entire requested VPD is retrieved by this call and all
457  * the kernel can prevent interleaving of ibm,get-vpd call sequences.
485 	file = anon_inode_getfile("[papr-vpd]", &papr_vpd_handle_ops,  in papr_vpd_create_handle()
503  * Top-level ioctl handler for /dev/papr-vpd.
527 	.name = "papr-vpd",