ixl_pf_qmgr.h revision 303816 
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33/*$FreeBSD: head/sys/dev/ixl/ixl_pf_qmgr.h 303816 2016-08-07 18:12:36Z sbruno $*/
34
35
36#include "ixl_pf.h"
37
38#ifndef _IXL_PF_QMGR_H_
39#define _IXL_PF_QMGR_H_
40
41/*
42 * Primarily manages the queues that need to be allocated to VSIs.
43 *
44 * Cardinality: There should only be one of these in a PF.
45 * Lifetime: Created and initialized in attach(); destroyed in detach().
46 */
47
48#define IXL_MAX_SCATTERED_QUEUES	16
49#define IXL_MAX_CONTIGUOUS_QUEUES_XL710	64
50#define IXL_MAX_CONTIGUOUS_QUEUES_X722	128
51
52/* Structures */
53
54/* Manager */
55struct ixl_pf_qmgr_qinfo {
56	bool allocated;
57	bool tx_enabled;
58	bool rx_enabled;
59	bool tx_configured;
60	bool rx_configured;
61};
62
63struct ixl_pf_qmgr {
64	u16	num_queues;
65	struct ixl_pf_qmgr_qinfo *qinfo;
66};
67
68/* Tag */
69enum ixl_pf_qmgr_qalloc_type {
70	IXL_PF_QALLOC_CONTIGUOUS,
71	IXL_PF_QALLOC_SCATTERED
72};
73
74struct ixl_pf_qtag {
75	struct ixl_pf_qmgr *qmgr;
76	enum ixl_pf_qmgr_qalloc_type type;
77	u16 qidx[IXL_MAX_SCATTERED_QUEUES];
78	u16 num_allocated;
79	u16 num_active;
80};
81
82/* Public manager functions */
83int	ixl_pf_qmgr_init(struct ixl_pf_qmgr *qmgr, u16 num_queues);
84void	ixl_pf_qmgr_destroy(struct ixl_pf_qmgr *qmgr);
85
86int	ixl_pf_qmgr_get_num_queues(struct ixl_pf_qmgr *qmgr);
87int	ixl_pf_qmgr_get_first_free(struct ixl_pf_qmgr *qmgr, u16 start);
88int	ixl_pf_qmgr_get_num_free(struct ixl_pf_qmgr *qmgr);
89
90/* Allocate queues for a VF VSI */
91int	ixl_pf_qmgr_alloc_scattered(struct ixl_pf_qmgr *qmgr, u16 num, struct ixl_pf_qtag *qtag);
92/* Allocate queues for the LAN VSIs, or X722 VF VSIs */
93int	ixl_pf_qmgr_alloc_contiguous(struct ixl_pf_qmgr *qmgr, u16 num, struct ixl_pf_qtag *qtag);
94/* Release a queue allocation */
95int	ixl_pf_qmgr_release(struct ixl_pf_qmgr *qmgr, struct ixl_pf_qtag *qtag);
96
97/* Help manage queues used in VFs */
98/* Typically hardware refers to RX as 0 and TX as 1, so continue that convention here */
99void	ixl_pf_qmgr_mark_queue_enabled(struct ixl_pf_qtag *qtag, u16 vsi_qidx, bool tx);
100void	ixl_pf_qmgr_mark_queue_disabled(struct ixl_pf_qtag *qtag, u16 vsi_qidx, bool tx);
101void	ixl_pf_qmgr_mark_queue_configured(struct ixl_pf_qtag *qtag, u16 vsi_qidx, bool tx);
102bool	ixl_pf_qmgr_is_queue_enabled(struct ixl_pf_qtag *qtag, u16 vsi_qidx, bool tx);
103bool	ixl_pf_qmgr_is_queue_configured(struct ixl_pf_qtag *qtag, u16 vsi_qidx, bool tx);
104
105/* Public tag functions */
106u16	ixl_pf_qidx_from_vsi_qidx(struct ixl_pf_qtag *qtag, u16 index);
107
108#endif /* _IXL_PF_QMGR_H_ */
109
110