1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * CAAM/SEC 4.x functions for using scatterlists in caam driver
 4 *
 5 * Copyright 2008-2011 Freescale Semiconductor, Inc.
 6 *
 7 */
 8
 9#ifndef _SG_SW_SEC4_H_
10#define _SG_SW_SEC4_H_
11
12#include "ctrl.h"
13#include "regs.h"
14#include "sg_sw_qm2.h"
15#include <soc/fsl/dpaa2-fd.h>
16
17struct sec4_sg_entry {
18	u64 ptr;
19	u32 len;
20	u32 bpid_offset;
21};
22
23/*
24 * convert single dma address to h/w link table format
25 */
26static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr,
27				      dma_addr_t dma, u32 len, u16 offset)
28{
29	if (caam_dpaa2) {
30		dma_to_qm_sg_one((struct dpaa2_sg_entry *)sec4_sg_ptr, dma, len,
31				 offset);
32	} else {
33		sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma);
34		sec4_sg_ptr->len = cpu_to_caam32(len);
35		sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset &
36							 SEC4_SG_OFFSET_MASK);
37	}
38
39	print_hex_dump_debug("sec4_sg_ptr@: ", DUMP_PREFIX_ADDRESS, 16, 4,
40			     sec4_sg_ptr, sizeof(struct sec4_sg_entry), 1);
41}
42
43/*
44 * convert scatterlist to h/w link table format
45 * but does not have final bit; instead, returns last entry
46 */
47static inline struct sec4_sg_entry *
48sg_to_sec4_sg(struct scatterlist *sg, int len,
49	      struct sec4_sg_entry *sec4_sg_ptr, u16 offset)
50{
51	int ent_len;
52
53	while (len) {
54		ent_len = min_t(int, sg_dma_len(sg), len);
55
56		dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), ent_len,
57				   offset);
58		sec4_sg_ptr++;
59		sg = sg_next(sg);
60		len -= ent_len;
61	}
62	return sec4_sg_ptr - 1;
63}
64
65static inline void sg_to_sec4_set_last(struct sec4_sg_entry *sec4_sg_ptr)
66{
67	if (caam_dpaa2)
68		dpaa2_sg_set_final((struct dpaa2_sg_entry *)sec4_sg_ptr, true);
69	else
70		sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN);
71}
72
73/*
74 * convert scatterlist to h/w link table format
75 * scatterlist must have been previously dma mapped
76 */
77static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int len,
78				      struct sec4_sg_entry *sec4_sg_ptr,
79				      u16 offset)
80{
81	sec4_sg_ptr = sg_to_sec4_sg(sg, len, sec4_sg_ptr, offset);
82	sg_to_sec4_set_last(sec4_sg_ptr);
83}
84
85#endif /* _SG_SW_SEC4_H_ */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * CAAM/SEC 4.x functions for using scatterlists in caam driver
 4 *
 5 * Copyright 2008-2011 Freescale Semiconductor, Inc.
 6 *
 7 */
 8
 9#ifndef _SG_SW_SEC4_H_
10#define _SG_SW_SEC4_H_
11
12#include "ctrl.h"
13#include "regs.h"
14#include "sg_sw_qm2.h"
15#include <soc/fsl/dpaa2-fd.h>
16
17struct sec4_sg_entry {
18	u64 ptr;
19	u32 len;
20	u32 bpid_offset;
21};
22
23/*
24 * convert single dma address to h/w link table format
25 */
26static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr,
27				      dma_addr_t dma, u32 len, u16 offset)
28{
29	if (caam_dpaa2) {
30		dma_to_qm_sg_one((struct dpaa2_sg_entry *)sec4_sg_ptr, dma, len,
31				 offset);
32	} else {
33		sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma);
34		sec4_sg_ptr->len = cpu_to_caam32(len);
35		sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset &
36							 SEC4_SG_OFFSET_MASK);
37	}
38
39	print_hex_dump_debug("sec4_sg_ptr@: ", DUMP_PREFIX_ADDRESS, 16, 4,
40			     sec4_sg_ptr, sizeof(struct sec4_sg_entry), 1);
41}
42
43/*
44 * convert scatterlist to h/w link table format
45 * but does not have final bit; instead, returns last entry
46 */
47static inline struct sec4_sg_entry *
48sg_to_sec4_sg(struct scatterlist *sg, int len,
49	      struct sec4_sg_entry *sec4_sg_ptr, u16 offset)
50{
51	int ent_len;
52
53	while (len) {
54		ent_len = min_t(int, sg_dma_len(sg), len);
55
56		dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), ent_len,
57				   offset);
58		sec4_sg_ptr++;
59		sg = sg_next(sg);
60		len -= ent_len;
61	}
62	return sec4_sg_ptr - 1;
63}
64
65static inline void sg_to_sec4_set_last(struct sec4_sg_entry *sec4_sg_ptr)
66{
67	if (caam_dpaa2)
68		dpaa2_sg_set_final((struct dpaa2_sg_entry *)sec4_sg_ptr, true);
69	else
70		sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN);
71}
72
73/*
74 * convert scatterlist to h/w link table format
75 * scatterlist must have been previously dma mapped
76 */
77static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int len,
78				      struct sec4_sg_entry *sec4_sg_ptr,
79				      u16 offset)
80{
81	sec4_sg_ptr = sg_to_sec4_sg(sg, len, sec4_sg_ptr, offset);
82	sg_to_sec4_set_last(sec4_sg_ptr);
83}
84
85#endif /* _SG_SW_SEC4_H_ */