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49 * Fixes and workaround for Octeon chip errata. This file
50 * contains functions called by cvmx-helper to workaround known
51 * chip errata. For the most part, code doesn't need to call
52 * these functions directly.
54 * <hr>$Revision: 70030 $<hr>
56 #ifndef __CVMX_HELPER_ERRATA_H__
57 #define __CVMX_HELPER_ERRATA_H__
61 * Function to adjust internal IPD pointer alignments
63 * @return 0 on success
66 extern int __cvmx_helper_errata_fix_ipd_ptr_alignment(void);
69 * This function needs to be called on all Octeon chips with
72 * The Size field is 8 too large in WQE and next pointers
74 * The Size field generated by IPD is 8 larger than it should
75 * be. The Size field is <55:40> of both:
76 * - WORD3 in the work queue entry, and
77 * - the next buffer pointer (which precedes the packet data
80 * @param work Work queue entry to fix
81 * @return Zero on success. Negative on failure
83 extern int cvmx_helper_fix_ipd_packet_chain(cvmx_wqe_t *work);
86 * Due to errata G-720, the 2nd order CDR circuit on CN52XX pass
87 * 1 doesn't work properly. The following code disables 2nd order
88 * CDR for the specified QLM.
90 * @param qlm QLM to disable 2nd order CDR for.
92 extern void __cvmx_helper_errata_qlm_disable_2nd_order_cdr(int qlm);