1*4882a593Smuzhiyun /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright 2013-2016 Freescale Semiconductor, Inc.
4*4882a593Smuzhiyun * Copyright 2016-2017 NXP
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #ifndef __SG_SW_QM_H
8*4882a593Smuzhiyun #define __SG_SW_QM_H
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <soc/fsl/qman.h>
11*4882a593Smuzhiyun #include "regs.h"
12*4882a593Smuzhiyun
__dma_to_qm_sg(struct qm_sg_entry * qm_sg_ptr,dma_addr_t dma,u16 offset)13*4882a593Smuzhiyun static inline void __dma_to_qm_sg(struct qm_sg_entry *qm_sg_ptr, dma_addr_t dma,
14*4882a593Smuzhiyun u16 offset)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun qm_sg_entry_set64(qm_sg_ptr, dma);
17*4882a593Smuzhiyun qm_sg_ptr->__reserved2 = 0;
18*4882a593Smuzhiyun qm_sg_ptr->bpid = 0;
19*4882a593Smuzhiyun qm_sg_ptr->offset = cpu_to_be16(offset & QM_SG_OFF_MASK);
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun
dma_to_qm_sg_one(struct qm_sg_entry * qm_sg_ptr,dma_addr_t dma,u32 len,u16 offset)22*4882a593Smuzhiyun static inline void dma_to_qm_sg_one(struct qm_sg_entry *qm_sg_ptr,
23*4882a593Smuzhiyun dma_addr_t dma, u32 len, u16 offset)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun __dma_to_qm_sg(qm_sg_ptr, dma, offset);
26*4882a593Smuzhiyun qm_sg_entry_set_len(qm_sg_ptr, len);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
dma_to_qm_sg_one_last(struct qm_sg_entry * qm_sg_ptr,dma_addr_t dma,u32 len,u16 offset)29*4882a593Smuzhiyun static inline void dma_to_qm_sg_one_last(struct qm_sg_entry *qm_sg_ptr,
30*4882a593Smuzhiyun dma_addr_t dma, u32 len, u16 offset)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun __dma_to_qm_sg(qm_sg_ptr, dma, offset);
33*4882a593Smuzhiyun qm_sg_entry_set_f(qm_sg_ptr, len);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
dma_to_qm_sg_one_ext(struct qm_sg_entry * qm_sg_ptr,dma_addr_t dma,u32 len,u16 offset)36*4882a593Smuzhiyun static inline void dma_to_qm_sg_one_ext(struct qm_sg_entry *qm_sg_ptr,
37*4882a593Smuzhiyun dma_addr_t dma, u32 len, u16 offset)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun __dma_to_qm_sg(qm_sg_ptr, dma, offset);
40*4882a593Smuzhiyun qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | (len & QM_SG_LEN_MASK));
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
dma_to_qm_sg_one_last_ext(struct qm_sg_entry * qm_sg_ptr,dma_addr_t dma,u32 len,u16 offset)43*4882a593Smuzhiyun static inline void dma_to_qm_sg_one_last_ext(struct qm_sg_entry *qm_sg_ptr,
44*4882a593Smuzhiyun dma_addr_t dma, u32 len,
45*4882a593Smuzhiyun u16 offset)
46*4882a593Smuzhiyun {
47*4882a593Smuzhiyun __dma_to_qm_sg(qm_sg_ptr, dma, offset);
48*4882a593Smuzhiyun qm_sg_ptr->cfg = cpu_to_be32(QM_SG_EXT | QM_SG_FIN |
49*4882a593Smuzhiyun (len & QM_SG_LEN_MASK));
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun /*
53*4882a593Smuzhiyun * convert scatterlist to h/w link table format
54*4882a593Smuzhiyun * but does not have final bit; instead, returns last entry
55*4882a593Smuzhiyun */
56*4882a593Smuzhiyun static inline struct qm_sg_entry *
sg_to_qm_sg(struct scatterlist * sg,int len,struct qm_sg_entry * qm_sg_ptr,u16 offset)57*4882a593Smuzhiyun sg_to_qm_sg(struct scatterlist *sg, int len,
58*4882a593Smuzhiyun struct qm_sg_entry *qm_sg_ptr, u16 offset)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun int ent_len;
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun while (len) {
63*4882a593Smuzhiyun ent_len = min_t(int, sg_dma_len(sg), len);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg), ent_len,
66*4882a593Smuzhiyun offset);
67*4882a593Smuzhiyun qm_sg_ptr++;
68*4882a593Smuzhiyun sg = sg_next(sg);
69*4882a593Smuzhiyun len -= ent_len;
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun return qm_sg_ptr - 1;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun /*
75*4882a593Smuzhiyun * convert scatterlist to h/w link table format
76*4882a593Smuzhiyun * scatterlist must have been previously dma mapped
77*4882a593Smuzhiyun */
sg_to_qm_sg_last(struct scatterlist * sg,int len,struct qm_sg_entry * qm_sg_ptr,u16 offset)78*4882a593Smuzhiyun static inline void sg_to_qm_sg_last(struct scatterlist *sg, int len,
79*4882a593Smuzhiyun struct qm_sg_entry *qm_sg_ptr, u16 offset)
80*4882a593Smuzhiyun {
81*4882a593Smuzhiyun qm_sg_ptr = sg_to_qm_sg(sg, len, qm_sg_ptr, offset);
82*4882a593Smuzhiyun qm_sg_entry_set_f(qm_sg_ptr, qm_sg_entry_get_len(qm_sg_ptr));
83*4882a593Smuzhiyun }
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun #endif /* __SG_SW_QM_H */
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