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linux/include/soc/fsl/dpaa2-fd.h
Horia Geantă 009447a038 soc: fsl: dpio: add frame list format support 
Add support for dpaa2_fd_list format, i.e. dpaa2_fl_entry structure
and accessors.

Frame list entries (FLEs) are similar, but not identical to FDs:
+ "F" (final) bit
- FMT[b'01] is reserved
- DD, SC, DROPP bits (covered by "FD compatibility" field in FLE case)
- FLC[5:0] not used for stashing

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-09-21 13:24:50 +08:00

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/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/*
* Copyright 2014-2016 Freescale Semiconductor Inc.
* Copyright 2016 NXP
*
*/
#ifndef __FSL_DPAA2_FD_H
#define __FSL_DPAA2_FD_H
#include <linux/kernel.h>
/**
* DOC: DPAA2 FD - Frame Descriptor APIs for DPAA2
*
* Frame Descriptors (FDs) are used to describe frame data in the DPAA2.
* Frames can be enqueued and dequeued to Frame Queues (FQs) which are consumed
* by the various DPAA accelerators (WRIOP, SEC, PME, DCE)
*
* There are three types of frames: single, scatter gather, and frame lists.
*
* The set of APIs in this file must be used to create, manipulate and
* query Frame Descriptors.
*/
/**
* struct dpaa2_fd - Struct describing FDs
* @words: for easier/faster copying the whole FD structure
* @addr: address in the FD
* @len: length in the FD
* @bpid: buffer pool ID
* @format_offset: format, offset, and short-length fields
* @frc: frame context
* @ctrl: control bits...including dd, sc, va, err, etc
* @flc: flow context address
*
* This structure represents the basic Frame Descriptor used in the system.
*/
struct dpaa2_fd {
union {
u32 words[8];
struct dpaa2_fd_simple {
__le64 addr;
__le32 len;
__le16 bpid;
__le16 format_offset;
__le32 frc;
__le32 ctrl;
__le64 flc;
} simple;
};
};
#define FD_SHORT_LEN_FLAG_MASK 0x1
#define FD_SHORT_LEN_FLAG_SHIFT 14
#define FD_SHORT_LEN_MASK 0x3FFFF
#define FD_OFFSET_MASK 0x0FFF
#define FD_FORMAT_MASK 0x3
#define FD_FORMAT_SHIFT 12
#define FD_BPID_MASK 0x3FFF
#define SG_SHORT_LEN_FLAG_MASK 0x1
#define SG_SHORT_LEN_FLAG_SHIFT 14
#define SG_SHORT_LEN_MASK 0x1FFFF
#define SG_OFFSET_MASK 0x0FFF
#define SG_FORMAT_MASK 0x3
#define SG_FORMAT_SHIFT 12
#define SG_BPID_MASK 0x3FFF
#define SG_FINAL_FLAG_MASK 0x1
#define SG_FINAL_FLAG_SHIFT 15
#define FL_SHORT_LEN_FLAG_MASK 0x1
#define FL_SHORT_LEN_FLAG_SHIFT 14
#define FL_SHORT_LEN_MASK 0x3FFFF
#define FL_OFFSET_MASK 0x0FFF
#define FL_FORMAT_MASK 0x3
#define FL_FORMAT_SHIFT 12
#define FL_BPID_MASK 0x3FFF
#define FL_FINAL_FLAG_MASK 0x1
#define FL_FINAL_FLAG_SHIFT 15
/* Error bits in FD CTRL */
#define FD_CTRL_ERR_MASK 0x000000FF
#define FD_CTRL_UFD 0x00000004
#define FD_CTRL_SBE 0x00000008
#define FD_CTRL_FLC 0x00000010
#define FD_CTRL_FSE 0x00000020
#define FD_CTRL_FAERR 0x00000040
/* Annotation bits in FD CTRL */
#define FD_CTRL_PTA 0x00800000
#define FD_CTRL_PTV1 0x00400000
enum dpaa2_fd_format {
dpaa2_fd_single = 0,
dpaa2_fd_list,
dpaa2_fd_sg
};
/**
* dpaa2_fd_get_addr() - get the addr field of frame descriptor
* @fd: the given frame descriptor
*
* Return the address in the frame descriptor.
*/
static inline dma_addr_t dpaa2_fd_get_addr(const struct dpaa2_fd *fd)
{
return (dma_addr_t)le64_to_cpu(fd->simple.addr);
}
/**
* dpaa2_fd_set_addr() - Set the addr field of frame descriptor
* @fd: the given frame descriptor
* @addr: the address needs to be set in frame descriptor
*/
static inline void dpaa2_fd_set_addr(struct dpaa2_fd *fd, dma_addr_t addr)
{
fd->simple.addr = cpu_to_le64(addr);
}
/**
* dpaa2_fd_get_frc() - Get the frame context in the frame descriptor
* @fd: the given frame descriptor
*
* Return the frame context field in the frame descriptor.
*/
static inline u32 dpaa2_fd_get_frc(const struct dpaa2_fd *fd)
{
return le32_to_cpu(fd->simple.frc);
}
/**
* dpaa2_fd_set_frc() - Set the frame context in the frame descriptor
* @fd: the given frame descriptor
* @frc: the frame context needs to be set in frame descriptor
*/
static inline void dpaa2_fd_set_frc(struct dpaa2_fd *fd, u32 frc)
{
fd->simple.frc = cpu_to_le32(frc);
}
/**
* dpaa2_fd_get_ctrl() - Get the control bits in the frame descriptor
* @fd: the given frame descriptor
*
* Return the control bits field in the frame descriptor.
*/
static inline u32 dpaa2_fd_get_ctrl(const struct dpaa2_fd *fd)
{
return le32_to_cpu(fd->simple.ctrl);
}
/**
* dpaa2_fd_set_ctrl() - Set the control bits in the frame descriptor
* @fd: the given frame descriptor
* @ctrl: the control bits to be set in the frame descriptor
*/
static inline void dpaa2_fd_set_ctrl(struct dpaa2_fd *fd, u32 ctrl)
{
fd->simple.ctrl = cpu_to_le32(ctrl);
}
/**
* dpaa2_fd_get_flc() - Get the flow context in the frame descriptor
* @fd: the given frame descriptor
*
* Return the flow context in the frame descriptor.
*/
static inline dma_addr_t dpaa2_fd_get_flc(const struct dpaa2_fd *fd)
{
return (dma_addr_t)le64_to_cpu(fd->simple.flc);
}
/**
* dpaa2_fd_set_flc() - Set the flow context field of frame descriptor
* @fd: the given frame descriptor
* @flc_addr: the flow context needs to be set in frame descriptor
*/
static inline void dpaa2_fd_set_flc(struct dpaa2_fd *fd, dma_addr_t flc_addr)
{
fd->simple.flc = cpu_to_le64(flc_addr);
}
static inline bool dpaa2_fd_short_len(const struct dpaa2_fd *fd)
{
return !!((le16_to_cpu(fd->simple.format_offset) >>
FD_SHORT_LEN_FLAG_SHIFT) & FD_SHORT_LEN_FLAG_MASK);
}
/**
* dpaa2_fd_get_len() - Get the length in the frame descriptor
* @fd: the given frame descriptor
*
* Return the length field in the frame descriptor.
*/
static inline u32 dpaa2_fd_get_len(const struct dpaa2_fd *fd)
{
if (dpaa2_fd_short_len(fd))
return le32_to_cpu(fd->simple.len) & FD_SHORT_LEN_MASK;
return le32_to_cpu(fd->simple.len);
}
/**
* dpaa2_fd_set_len() - Set the length field of frame descriptor
* @fd: the given frame descriptor
* @len: the length needs to be set in frame descriptor
*/
static inline void dpaa2_fd_set_len(struct dpaa2_fd *fd, u32 len)
{
fd->simple.len = cpu_to_le32(len);
}
/**
* dpaa2_fd_get_offset() - Get the offset field in the frame descriptor
* @fd: the given frame descriptor
*
* Return the offset.
*/
static inline uint16_t dpaa2_fd_get_offset(const struct dpaa2_fd *fd)
{
return le16_to_cpu(fd->simple.format_offset) & FD_OFFSET_MASK;
}
/**
* dpaa2_fd_set_offset() - Set the offset field of frame descriptor
* @fd: the given frame descriptor
* @offset: the offset needs to be set in frame descriptor
*/
static inline void dpaa2_fd_set_offset(struct dpaa2_fd *fd, uint16_t offset)
{
fd->simple.format_offset &= cpu_to_le16(~FD_OFFSET_MASK);
fd->simple.format_offset |= cpu_to_le16(offset);
}
/**
* dpaa2_fd_get_format() - Get the format field in the frame descriptor
* @fd: the given frame descriptor
*
* Return the format.
*/
static inline enum dpaa2_fd_format dpaa2_fd_get_format(
const struct dpaa2_fd *fd)
{
return (enum dpaa2_fd_format)((le16_to_cpu(fd->simple.format_offset)
>> FD_FORMAT_SHIFT) & FD_FORMAT_MASK);
}
/**
* dpaa2_fd_set_format() - Set the format field of frame descriptor
* @fd: the given frame descriptor
* @format: the format needs to be set in frame descriptor
*/
static inline void dpaa2_fd_set_format(struct dpaa2_fd *fd,
enum dpaa2_fd_format format)
{
fd->simple.format_offset &=
cpu_to_le16(~(FD_FORMAT_MASK << FD_FORMAT_SHIFT));
fd->simple.format_offset |= cpu_to_le16(format << FD_FORMAT_SHIFT);
}
/**
* dpaa2_fd_get_bpid() - Get the bpid field in the frame descriptor
* @fd: the given frame descriptor
*
* Return the buffer pool id.
*/
static inline uint16_t dpaa2_fd_get_bpid(const struct dpaa2_fd *fd)
{
return le16_to_cpu(fd->simple.bpid) & FD_BPID_MASK;
}
/**
* dpaa2_fd_set_bpid() - Set the bpid field of frame descriptor
* @fd: the given frame descriptor
* @bpid: buffer pool id to be set
*/
static inline void dpaa2_fd_set_bpid(struct dpaa2_fd *fd, uint16_t bpid)
{
fd->simple.bpid &= cpu_to_le16(~(FD_BPID_MASK));
fd->simple.bpid |= cpu_to_le16(bpid);
}
/**
* struct dpaa2_sg_entry - the scatter-gathering structure
* @addr: address of the sg entry
* @len: length in this sg entry
* @bpid: buffer pool id
* @format_offset: format and offset fields
*/
struct dpaa2_sg_entry {
__le64 addr;
__le32 len;
__le16 bpid;
__le16 format_offset;
};
enum dpaa2_sg_format {
dpaa2_sg_single = 0,
dpaa2_sg_frame_data,
dpaa2_sg_sgt_ext
};
/* Accessors for SG entry fields */
/**
* dpaa2_sg_get_addr() - Get the address from SG entry
* @sg: the given scatter-gathering object
*
* Return the address.
*/
static inline dma_addr_t dpaa2_sg_get_addr(const struct dpaa2_sg_entry *sg)
{
return (dma_addr_t)le64_to_cpu(sg->addr);
}
/**
* dpaa2_sg_set_addr() - Set the address in SG entry
* @sg: the given scatter-gathering object
* @addr: the address to be set
*/
static inline void dpaa2_sg_set_addr(struct dpaa2_sg_entry *sg, dma_addr_t addr)
{
sg->addr = cpu_to_le64(addr);
}
static inline bool dpaa2_sg_short_len(const struct dpaa2_sg_entry *sg)
{
return !!((le16_to_cpu(sg->format_offset) >> SG_SHORT_LEN_FLAG_SHIFT)
& SG_SHORT_LEN_FLAG_MASK);
}
/**
* dpaa2_sg_get_len() - Get the length in SG entry
* @sg: the given scatter-gathering object
*
* Return the length.
*/
static inline u32 dpaa2_sg_get_len(const struct dpaa2_sg_entry *sg)
{
if (dpaa2_sg_short_len(sg))
return le32_to_cpu(sg->len) & SG_SHORT_LEN_MASK;
return le32_to_cpu(sg->len);
}
/**
* dpaa2_sg_set_len() - Set the length in SG entry
* @sg: the given scatter-gathering object
* @len: the length to be set
*/
static inline void dpaa2_sg_set_len(struct dpaa2_sg_entry *sg, u32 len)
{
sg->len = cpu_to_le32(len);
}
/**
* dpaa2_sg_get_offset() - Get the offset in SG entry
* @sg: the given scatter-gathering object
*
* Return the offset.
*/
static inline u16 dpaa2_sg_get_offset(const struct dpaa2_sg_entry *sg)
{
return le16_to_cpu(sg->format_offset) & SG_OFFSET_MASK;
}
/**
* dpaa2_sg_set_offset() - Set the offset in SG entry
* @sg: the given scatter-gathering object
* @offset: the offset to be set
*/
static inline void dpaa2_sg_set_offset(struct dpaa2_sg_entry *sg,
u16 offset)
{
sg->format_offset &= cpu_to_le16(~SG_OFFSET_MASK);
sg->format_offset |= cpu_to_le16(offset);
}
/**
* dpaa2_sg_get_format() - Get the SG format in SG entry
* @sg: the given scatter-gathering object
*
* Return the format.
*/
static inline enum dpaa2_sg_format
dpaa2_sg_get_format(const struct dpaa2_sg_entry *sg)
{
return (enum dpaa2_sg_format)((le16_to_cpu(sg->format_offset)
>> SG_FORMAT_SHIFT) & SG_FORMAT_MASK);
}
/**
* dpaa2_sg_set_format() - Set the SG format in SG entry
* @sg: the given scatter-gathering object
* @format: the format to be set
*/
static inline void dpaa2_sg_set_format(struct dpaa2_sg_entry *sg,
enum dpaa2_sg_format format)
{
sg->format_offset &= cpu_to_le16(~(SG_FORMAT_MASK << SG_FORMAT_SHIFT));
sg->format_offset |= cpu_to_le16(format << SG_FORMAT_SHIFT);
}
/**
* dpaa2_sg_get_bpid() - Get the buffer pool id in SG entry
* @sg: the given scatter-gathering object
*
* Return the bpid.
*/
static inline u16 dpaa2_sg_get_bpid(const struct dpaa2_sg_entry *sg)
{
return le16_to_cpu(sg->bpid) & SG_BPID_MASK;
}
/**
* dpaa2_sg_set_bpid() - Set the buffer pool id in SG entry
* @sg: the given scatter-gathering object
* @bpid: the bpid to be set
*/
static inline void dpaa2_sg_set_bpid(struct dpaa2_sg_entry *sg, u16 bpid)
{
sg->bpid &= cpu_to_le16(~(SG_BPID_MASK));
sg->bpid |= cpu_to_le16(bpid);
}
/**
* dpaa2_sg_is_final() - Check final bit in SG entry
* @sg: the given scatter-gathering object
*
* Return bool.
*/
static inline bool dpaa2_sg_is_final(const struct dpaa2_sg_entry *sg)
{
return !!(le16_to_cpu(sg->format_offset) >> SG_FINAL_FLAG_SHIFT);
}
/**
* dpaa2_sg_set_final() - Set the final bit in SG entry
* @sg: the given scatter-gathering object
* @final: the final boolean to be set
*/
static inline void dpaa2_sg_set_final(struct dpaa2_sg_entry *sg, bool final)
{
sg->format_offset &= cpu_to_le16((~(SG_FINAL_FLAG_MASK
<< SG_FINAL_FLAG_SHIFT)) & 0xFFFF);
sg->format_offset |= cpu_to_le16(final << SG_FINAL_FLAG_SHIFT);
}
/**
* struct dpaa2_fl_entry - structure for frame list entry.
* @addr: address in the FLE
* @len: length in the FLE
* @bpid: buffer pool ID
* @format_offset: format, offset, and short-length fields
* @frc: frame context
* @ctrl: control bits...including pta, pvt1, pvt2, err, etc
* @flc: flow context address
*/
struct dpaa2_fl_entry {
__le64 addr;
__le32 len;
__le16 bpid;
__le16 format_offset;
__le32 frc;
__le32 ctrl;
__le64 flc;
};
enum dpaa2_fl_format {
dpaa2_fl_single = 0,
dpaa2_fl_res,
dpaa2_fl_sg
};
/**
* dpaa2_fl_get_addr() - get the addr field of FLE
* @fle: the given frame list entry
*
* Return the address in the frame list entry.
*/
static inline dma_addr_t dpaa2_fl_get_addr(const struct dpaa2_fl_entry *fle)
{
return (dma_addr_t)le64_to_cpu(fle->addr);
}
/**
* dpaa2_fl_set_addr() - Set the addr field of FLE
* @fle: the given frame list entry
* @addr: the address needs to be set in frame list entry
*/
static inline void dpaa2_fl_set_addr(struct dpaa2_fl_entry *fle,
dma_addr_t addr)
{
fle->addr = cpu_to_le64(addr);
}
/**
* dpaa2_fl_get_frc() - Get the frame context in the FLE
* @fle: the given frame list entry
*
* Return the frame context field in the frame lsit entry.
*/
static inline u32 dpaa2_fl_get_frc(const struct dpaa2_fl_entry *fle)
{
return le32_to_cpu(fle->frc);
}
/**
* dpaa2_fl_set_frc() - Set the frame context in the FLE
* @fle: the given frame list entry
* @frc: the frame context needs to be set in frame list entry
*/
static inline void dpaa2_fl_set_frc(struct dpaa2_fl_entry *fle, u32 frc)
{
fle->frc = cpu_to_le32(frc);
}
/**
* dpaa2_fl_get_ctrl() - Get the control bits in the FLE
* @fle: the given frame list entry
*
* Return the control bits field in the frame list entry.
*/
static inline u32 dpaa2_fl_get_ctrl(const struct dpaa2_fl_entry *fle)
{
return le32_to_cpu(fle->ctrl);
}
/**
* dpaa2_fl_set_ctrl() - Set the control bits in the FLE
* @fle: the given frame list entry
* @ctrl: the control bits to be set in the frame list entry
*/
static inline void dpaa2_fl_set_ctrl(struct dpaa2_fl_entry *fle, u32 ctrl)
{
fle->ctrl = cpu_to_le32(ctrl);
}
/**
* dpaa2_fl_get_flc() - Get the flow context in the FLE
* @fle: the given frame list entry
*
* Return the flow context in the frame list entry.
*/
static inline dma_addr_t dpaa2_fl_get_flc(const struct dpaa2_fl_entry *fle)
{
return (dma_addr_t)le64_to_cpu(fle->flc);
}
/**
* dpaa2_fl_set_flc() - Set the flow context field of FLE
* @fle: the given frame list entry
* @flc_addr: the flow context needs to be set in frame list entry
*/
static inline void dpaa2_fl_set_flc(struct dpaa2_fl_entry *fle,
dma_addr_t flc_addr)
{
fle->flc = cpu_to_le64(flc_addr);
}
static inline bool dpaa2_fl_short_len(const struct dpaa2_fl_entry *fle)
{
return !!((le16_to_cpu(fle->format_offset) >>
FL_SHORT_LEN_FLAG_SHIFT) & FL_SHORT_LEN_FLAG_MASK);
}
/**
* dpaa2_fl_get_len() - Get the length in the FLE
* @fle: the given frame list entry
*
* Return the length field in the frame list entry.
*/
static inline u32 dpaa2_fl_get_len(const struct dpaa2_fl_entry *fle)
{
if (dpaa2_fl_short_len(fle))
return le32_to_cpu(fle->len) & FL_SHORT_LEN_MASK;
return le32_to_cpu(fle->len);
}
/**
* dpaa2_fl_set_len() - Set the length field of FLE
* @fle: the given frame list entry
* @len: the length needs to be set in frame list entry
*/
static inline void dpaa2_fl_set_len(struct dpaa2_fl_entry *fle, u32 len)
{
fle->len = cpu_to_le32(len);
}
/**
* dpaa2_fl_get_offset() - Get the offset field in the frame list entry
* @fle: the given frame list entry
*
* Return the offset.
*/
static inline u16 dpaa2_fl_get_offset(const struct dpaa2_fl_entry *fle)
{
return le16_to_cpu(fle->format_offset) & FL_OFFSET_MASK;
}
/**
* dpaa2_fl_set_offset() - Set the offset field of FLE
* @fle: the given frame list entry
* @offset: the offset needs to be set in frame list entry
*/
static inline void dpaa2_fl_set_offset(struct dpaa2_fl_entry *fle, u16 offset)
{
fle->format_offset &= cpu_to_le16(~FL_OFFSET_MASK);
fle->format_offset |= cpu_to_le16(offset);
}
/**
* dpaa2_fl_get_format() - Get the format field in the FLE
* @fle: the given frame list entry
*
* Return the format.
*/
static inline enum dpaa2_fl_format dpaa2_fl_get_format(const struct dpaa2_fl_entry *fle)
{
return (enum dpaa2_fl_format)((le16_to_cpu(fle->format_offset) >>
FL_FORMAT_SHIFT) & FL_FORMAT_MASK);
}
/**
* dpaa2_fl_set_format() - Set the format field of FLE
* @fle: the given frame list entry
* @format: the format needs to be set in frame list entry
*/
static inline void dpaa2_fl_set_format(struct dpaa2_fl_entry *fle,
enum dpaa2_fl_format format)
{
fle->format_offset &= cpu_to_le16(~(FL_FORMAT_MASK << FL_FORMAT_SHIFT));
fle->format_offset |= cpu_to_le16(format << FL_FORMAT_SHIFT);
}
/**
* dpaa2_fl_get_bpid() - Get the bpid field in the FLE
* @fle: the given frame list entry
*
* Return the buffer pool id.
*/
static inline u16 dpaa2_fl_get_bpid(const struct dpaa2_fl_entry *fle)
{
return le16_to_cpu(fle->bpid) & FL_BPID_MASK;
}
/**
* dpaa2_fl_set_bpid() - Set the bpid field of FLE
* @fle: the given frame list entry
* @bpid: buffer pool id to be set
*/
static inline void dpaa2_fl_set_bpid(struct dpaa2_fl_entry *fle, u16 bpid)
{
fle->bpid &= cpu_to_le16(~(FL_BPID_MASK));
fle->bpid |= cpu_to_le16(bpid);
}
/**
* dpaa2_fl_is_final() - Check final bit in FLE
* @fle: the given frame list entry
*
* Return bool.
*/
static inline bool dpaa2_fl_is_final(const struct dpaa2_fl_entry *fle)
{
return !!(le16_to_cpu(fle->format_offset) >> FL_FINAL_FLAG_SHIFT);
}
/**
* dpaa2_fl_set_final() - Set the final bit in FLE
* @fle: the given frame list entry
* @final: the final boolean to be set
*/
static inline void dpaa2_fl_set_final(struct dpaa2_fl_entry *fle, bool final)
{
fle->format_offset &= cpu_to_le16((~(FL_FINAL_FLAG_MASK <<
FL_FINAL_FLAG_SHIFT)) & 0xFFFF);
fle->format_offset |= cpu_to_le16(final << FL_FINAL_FLAG_SHIFT);
}
#endif /* __FSL_DPAA2_FD_H */
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