1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
2 * Copyright(c) 2018-2019 Pensando Systems, Inc. All rights reserved.
8 /** struct ionic_intr - interrupt control register set.
9 * @coal_init: coalesce timer initial value.
10 * @mask: interrupt mask value.
11 * @credits: interrupt credit count and return.
12 * @mask_assert: interrupt mask value on assert.
13 * @coal: coalesce timer time remaining.
24 #define IONIC_INTR_CTRL_REGS_MAX 2048
25 #define IONIC_INTR_CTRL_COAL_MAX 0x3F
27 /** enum ionic_intr_mask_vals - valid values for mask and mask_assert.
28 * @IONIC_INTR_MASK_CLEAR: unmask interrupt.
29 * @IONIC_INTR_MASK_SET: mask interrupt.
31 enum ionic_intr_mask_vals
{
32 IONIC_INTR_MASK_CLEAR
= 0,
33 IONIC_INTR_MASK_SET
= 1,
36 /** enum ionic_intr_credits_bits - bitwise composition of credits values.
37 * @IONIC_INTR_CRED_COUNT: bit mask of credit count, no shift needed.
38 * @IONIC_INTR_CRED_COUNT_SIGNED: bit mask of credit count, including sign bit.
39 * @IONIC_INTR_CRED_UNMASK: unmask the interrupt.
40 * @IONIC_INTR_CRED_RESET_COALESCE: reset the coalesce timer.
41 * @IONIC_INTR_CRED_REARM: unmask the and reset the timer.
43 enum ionic_intr_credits_bits
{
44 IONIC_INTR_CRED_COUNT
= 0x7fffu
,
45 IONIC_INTR_CRED_COUNT_SIGNED
= 0xffffu
,
46 IONIC_INTR_CRED_UNMASK
= 0x10000u
,
47 IONIC_INTR_CRED_RESET_COALESCE
= 0x20000u
,
48 IONIC_INTR_CRED_REARM
= (IONIC_INTR_CRED_UNMASK
|
49 IONIC_INTR_CRED_RESET_COALESCE
),
53 ionic_intr_coal_init(struct ionic_intr __iomem
*intr_ctrl
,
54 int intr_idx
, uint32_t coal
)
56 iowrite32(coal
, &intr_ctrl
[intr_idx
].coal_init
);
60 ionic_intr_mask(struct ionic_intr __iomem
*intr_ctrl
,
61 int intr_idx
, uint32_t mask
)
63 iowrite32(mask
, &intr_ctrl
[intr_idx
].mask
);
67 ionic_intr_credits(struct ionic_intr __iomem
*intr_ctrl
,
68 int intr_idx
, uint32_t cred
, uint32_t flags
)
70 if (cred
> IONIC_INTR_CRED_COUNT
) {
71 IONIC_WARN_ON(cred
> IONIC_INTR_CRED_COUNT
);
72 cred
= ioread32(&intr_ctrl
[intr_idx
].credits
);
73 cred
&= IONIC_INTR_CRED_COUNT_SIGNED
;
76 iowrite32(cred
| flags
, &intr_ctrl
[intr_idx
].credits
);
80 ionic_intr_clean(struct ionic_intr __iomem
*intr_ctrl
,
85 cred
= ioread32(&intr_ctrl
[intr_idx
].credits
);
86 cred
&= IONIC_INTR_CRED_COUNT_SIGNED
;
87 cred
|= IONIC_INTR_CRED_RESET_COALESCE
;
88 iowrite32(cred
, &intr_ctrl
[intr_idx
].credits
);
92 ionic_intr_mask_assert(struct ionic_intr __iomem
*intr_ctrl
,
93 int intr_idx
, uint32_t mask
)
95 iowrite32(mask
, &intr_ctrl
[intr_idx
].mask_assert
);
98 /** enum ionic_dbell_bits - bitwise composition of dbell values.
100 * @IONIC_DBELL_QID_MASK: unshifted mask of valid queue id bits.
101 * @IONIC_DBELL_QID_SHIFT: queue id shift amount in dbell value.
102 * @IONIC_DBELL_QID: macro to build QID component of dbell value.
104 * @IONIC_DBELL_RING_MASK: unshifted mask of valid ring bits.
105 * @IONIC_DBELL_RING_SHIFT: ring shift amount in dbell value.
106 * @IONIC_DBELL_RING: macro to build ring component of dbell value.
108 * @IONIC_DBELL_RING_0: ring zero dbell component value.
109 * @IONIC_DBELL_RING_1: ring one dbell component value.
110 * @IONIC_DBELL_RING_2: ring two dbell component value.
111 * @IONIC_DBELL_RING_3: ring three dbell component value.
113 * @IONIC_DBELL_INDEX_MASK: bit mask of valid index bits, no shift needed.
115 enum ionic_dbell_bits
{
116 IONIC_DBELL_QID_MASK
= 0xffffff,
117 IONIC_DBELL_QID_SHIFT
= 24,
119 #define IONIC_DBELL_QID(n) \
120 (((u64)(n) & IONIC_DBELL_QID_MASK) << IONIC_DBELL_QID_SHIFT)
122 IONIC_DBELL_RING_MASK
= 0x7,
123 IONIC_DBELL_RING_SHIFT
= 16,
125 #define IONIC_DBELL_RING(n) \
126 (((u64)(n) & IONIC_DBELL_RING_MASK) << IONIC_DBELL_RING_SHIFT)
128 IONIC_DBELL_RING_0
= 0,
129 IONIC_DBELL_RING_1
= IONIC_DBELL_RING(1),
130 IONIC_DBELL_RING_2
= IONIC_DBELL_RING(2),
131 IONIC_DBELL_RING_3
= IONIC_DBELL_RING(3),
133 IONIC_DBELL_INDEX_MASK
= 0xffff,
137 ionic_dbell_ring(u64 __iomem
*db_page
, int qtype
, u64 val
)
139 writeq(val
, &db_page
[qtype
]);
142 #endif /* _IONIC_REGS_H_ */