Quelle ti-cppi5.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 */
/*
* CPPI5 descriptors interface
*
* Copyright ( C ) 2019 Texas Instruments Incorporated - https : //www.ti.com
*/
#ifndef __TI_CPPI5_H__
#define __TI_CPPI5_H__
#include <linux/bitops.h>
#include <linux/printk.h>
#include <linux/bug.h>
/**
* struct cppi5_desc_hdr_t - Descriptor header , present in all types of
* descriptors
* @ pkt_info0 : Packet info word 0 ( n / a in Buffer desc )
* @ pkt_info0 : Packet info word 1 ( n / a in Buffer desc )
* @ pkt_info0 : Packet info word 2 ( n / a in Buffer desc )
* @ src_dst_tag : Packet info word 3 ( n / a in Buffer desc )
*/
struct cppi5_desc_hdr_t {
u32 pkt_info0;
u32 pkt_info1;
u32 pkt_info2;
u32 src_dst_tag;
} __packed;
/**
* struct cppi5_host_desc_t - Host - mode packet and buffer descriptor definition
* @ hdr : Descriptor header
* @ next_desc : word 4 / 5 : Linking word
* @ buf_ptr : word 6 / 7 : Buffer pointer
* @ buf_info1 : word 8 : Buffer valid data length
* @ org_buf_len : word 9 : Original buffer length
* @ org_buf_ptr : word 10 / 11 : Original buffer pointer
* @ epib [ 0 ] : Extended Packet Info Data ( optional , 4 words ) , and / or
* Protocol Specific Data ( optional , 0 - 128 bytes in
* multiples of 4 ) , and / or
* Other Software Data ( 0 - N bytes , optional )
*/
struct cppi5_host_desc_t {
struct cppi5_desc_hdr_t hdr;
u64 next_desc;
u64 buf_ptr;
u32 buf_info1;
u32 org_buf_len;
u64 org_buf_ptr;
u32 epib[];
} __packed;
#define CPPI5_DESC_MIN_ALIGN (16 U)
#define CPPI5_INFO0_HDESC_EPIB_SIZE (16 U)
#define CPPI5_INFO0_HDESC_PSDATA_MAX_SIZE (128 U)
#define CPPI5_INFO0_HDESC_TYPE_SHIFT (30 U)
#define CPPI5_INFO0_HDESC_TYPE_MASK GENMASK(31 , 30 )
#define CPPI5_INFO0_DESC_TYPE_VAL_HOST (1 U)
#define CPPI5_INFO0_DESC_TYPE_VAL_MONO (2 U)
#define CPPI5_INFO0_DESC_TYPE_VAL_TR (3 U)
#define CPPI5_INFO0_HDESC_EPIB_PRESENT BIT(29 )
/*
* Protocol Specific Words location :
* 0 - located in the descriptor ,
* 1 = located in the SOP Buffer immediately prior to the data .
*/
#define CPPI5_INFO0_HDESC_PSINFO_LOCATION BIT(28 )
#define CPPI5_INFO0_HDESC_PSINFO_SIZE_SHIFT (22 U)
#define CPPI5_INFO0_HDESC_PSINFO_SIZE_MASK GENMASK(27 , 22 )
#define CPPI5_INFO0_HDESC_PKTLEN_SHIFT (0 )
#define CPPI5_INFO0_HDESC_PKTLEN_MASK GENMASK(21 , 0 )
#define CPPI5_INFO1_DESC_PKTERROR_SHIFT (28 U)
#define CPPI5_INFO1_DESC_PKTERROR_MASK GENMASK(31 , 28 )
#define CPPI5_INFO1_HDESC_PSFLGS_SHIFT (24 U)
#define CPPI5_INFO1_HDESC_PSFLGS_MASK GENMASK(27 , 24 )
#define CPPI5_INFO1_DESC_PKTID_SHIFT (14 U)
#define CPPI5_INFO1_DESC_PKTID_MASK GENMASK(23 , 14 )
#define CPPI5_INFO1_DESC_FLOWID_SHIFT (0 )
#define CPPI5_INFO1_DESC_FLOWID_MASK GENMASK(13 , 0 )
#define CPPI5_INFO1_DESC_FLOWID_DEFAULT CPPI5_INFO1_DESC_FLOWID_MASK
#define CPPI5_INFO2_HDESC_PKTTYPE_SHIFT (27 U)
#define CPPI5_INFO2_HDESC_PKTTYPE_MASK GENMASK(31 , 27 )
/* Return Policy: 0 - Entire packet 1 - Each buffer */
#define CPPI5_INFO2_HDESC_RETPOLICY BIT(18 )
/*
* Early Return :
* 0 = desc pointers should be returned after all reads have been completed
* 1 = desc pointers should be returned immediately upon fetching
* the descriptor and beginning to transfer data .
*/
#define CPPI5_INFO2_HDESC_EARLYRET BIT(17 )
/*
* Return Push Policy :
* 0 = Descriptor must be returned to tail of queue
* 1 = Descriptor must be returned to head of queue
*/
#define CPPI5_INFO2_DESC_RETPUSHPOLICY BIT(16 )
#define CPPI5_INFO2_DESC_RETP_MASK GENMASK(18 , 16 )
#define CPPI5_INFO2_DESC_RETQ_SHIFT (0 )
#define CPPI5_INFO2_DESC_RETQ_MASK GENMASK(15 , 0 )
#define CPPI5_INFO3_DESC_SRCTAG_SHIFT (16 U)
#define CPPI5_INFO3_DESC_SRCTAG_MASK GENMASK(31 , 16 )
#define CPPI5_INFO3_DESC_DSTTAG_SHIFT (0 )
#define CPPI5_INFO3_DESC_DSTTAG_MASK GENMASK(15 , 0 )
#define CPPI5_BUFINFO1_HDESC_DATA_LEN_SHIFT (0 )
#define CPPI5_BUFINFO1_HDESC_DATA_LEN_MASK GENMASK(27 , 0 )
#define CPPI5_OBUFINFO0_HDESC_BUF_LEN_SHIFT (0 )
#define CPPI5_OBUFINFO0_HDESC_BUF_LEN_MASK GENMASK(27 , 0 )
/**
* struct cppi5_desc_epib_t - Host Packet Descriptor Extended Packet Info Block
* @ timestamp : word 0 : application specific timestamp
* @ sw_info0 : word 1 : Software Info 0
* @ sw_info1 : word 1 : Software Info 1
* @ sw_info2 : word 1 : Software Info 2
*/
struct cppi5_desc_epib_t {
u32 timestamp; /* w0: application specific timestamp */
u32 sw_info0; /* w1: Software Info 0 */
u32 sw_info1; /* w2: Software Info 1 */
u32 sw_info2; /* w3: Software Info 2 */
};
/**
* struct cppi5_monolithic_desc_t - Monolithic - mode packet descriptor
* @ hdr : Descriptor header
* @ epib [ 0 ] : Extended Packet Info Data ( optional , 4 words ) , and / or
* Protocol Specific Data ( optional , 0 - 128 bytes in
* multiples of 4 ) , and / or
* Other Software Data ( 0 - N bytes , optional )
*/
struct cppi5_monolithic_desc_t {
struct cppi5_desc_hdr_t hdr;
u32 epib[];
};
#define CPPI5_INFO2_MDESC_DATA_OFFSET_SHIFT (18 U)
#define CPPI5_INFO2_MDESC_DATA_OFFSET_MASK GENMASK(26 , 18 )
/*
* Reload Count :
* 0 = Finish the packet and place the descriptor back on the return queue
* 1 - 0 x1ff = Vector to the Reload Index and resume processing
* 0 x1ff indicates perpetual loop , infinite reload until the channel is stopped
*/
#define CPPI5_INFO0_TRDESC_RLDCNT_SHIFT (20 U)
#define CPPI5_INFO0_TRDESC_RLDCNT_MASK GENMASK(28 , 20 )
#define CPPI5_INFO0_TRDESC_RLDCNT_MAX (0 x1ff)
#define CPPI5_INFO0_TRDESC_RLDCNT_INFINITE CPPI5_INFO0_TRDESC_RLDCNT_MAX
#define CPPI5_INFO0_TRDESC_RLDIDX_SHIFT (14 U)
#define CPPI5_INFO0_TRDESC_RLDIDX_MASK GENMASK(19 , 14 )
#define CPPI5_INFO0_TRDESC_RLDIDX_MAX (0 x3f)
#define CPPI5_INFO0_TRDESC_LASTIDX_SHIFT (0 )
#define CPPI5_INFO0_TRDESC_LASTIDX_MASK GENMASK(13 , 0 )
#define CPPI5_INFO1_TRDESC_RECSIZE_SHIFT (24 U)
#define CPPI5_INFO1_TRDESC_RECSIZE_MASK GENMASK(26 , 24 )
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_16B (0 )
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_32B (1 U)
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_64B (2 U)
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_128B (3 U)
static inline void cppi5_desc_dump(void *desc, u32 size)
{
print_hex_dump(KERN_ERR, "dump udmap_desc: " , DUMP_PREFIX_NONE,
32 , 4 , desc, size, false );
}
#define CPPI5_TDCM_MARKER (0 x1)
/**
* cppi5_desc_is_tdcm - check if the paddr indicates Teardown Complete Message
* @ paddr : Physical address of the packet popped from the ring
*
* Returns true if the address indicates TDCM
*/
static inline bool cppi5_desc_is_tdcm(dma_addr_t paddr)
{
return (paddr & CPPI5_TDCM_MARKER) ? true : false ;
}
/**
* cppi5_desc_get_type - get descriptor type
* @ desc_hdr : packet descriptor / TR header
*
* Returns descriptor type :
* CPPI5_INFO0_DESC_TYPE_VAL_HOST
* CPPI5_INFO0_DESC_TYPE_VAL_MONO
* CPPI5_INFO0_DESC_TYPE_VAL_TR
*/
static inline u32 cppi5_desc_get_type(struct cppi5_desc_hdr_t *desc_hdr)
{
return (desc_hdr->pkt_info0 & CPPI5_INFO0_HDESC_TYPE_MASK) >>
CPPI5_INFO0_HDESC_TYPE_SHIFT;
}
/**
* cppi5_desc_get_errflags - get Error Flags from Desc
* @ desc_hdr : packet / TR descriptor header
*
* Returns Error Flags from Packet / TR Descriptor
*/
static inline u32 cppi5_desc_get_errflags(struct cppi5_desc_hdr_t *desc_hdr)
{
return (desc_hdr->pkt_info1 & CPPI5_INFO1_DESC_PKTERROR_MASK) >>
CPPI5_INFO1_DESC_PKTERROR_SHIFT;
}
/**
* cppi5_desc_get_pktids - get Packet and Flow ids from Desc
* @ desc_hdr : packet / TR descriptor header
* @ pkt_id : Packet ID
* @ flow_id : Flow ID
*
* Returns Packet and Flow ids from packet / TR descriptor
*/
static inline void cppi5_desc_get_pktids(struct cppi5_desc_hdr_t *desc_hdr,
u32 *pkt_id, u32 *flow_id)
{
*pkt_id = (desc_hdr->pkt_info1 & CPPI5_INFO1_DESC_PKTID_MASK) >>
CPPI5_INFO1_DESC_PKTID_SHIFT;
*flow_id = (desc_hdr->pkt_info1 & CPPI5_INFO1_DESC_FLOWID_MASK) >>
CPPI5_INFO1_DESC_FLOWID_SHIFT;
}
/**
* cppi5_desc_set_pktids - set Packet and Flow ids in Desc
* @ desc_hdr : packet / TR descriptor header
* @ pkt_id : Packet ID
* @ flow_id : Flow ID
*/
static inline void cppi5_desc_set_pktids(struct cppi5_desc_hdr_t *desc_hdr,
u32 pkt_id, u32 flow_id)
{
desc_hdr->pkt_info1 &= ~(CPPI5_INFO1_DESC_PKTID_MASK |
CPPI5_INFO1_DESC_FLOWID_MASK);
desc_hdr->pkt_info1 |= (pkt_id << CPPI5_INFO1_DESC_PKTID_SHIFT) &
CPPI5_INFO1_DESC_PKTID_MASK;
desc_hdr->pkt_info1 |= (flow_id << CPPI5_INFO1_DESC_FLOWID_SHIFT) &
CPPI5_INFO1_DESC_FLOWID_MASK;
}
/**
* cppi5_desc_set_retpolicy - set Packet Return Policy in Desc
* @ desc_hdr : packet / TR descriptor header
* @ flags : fags , supported values
* CPPI5_INFO2_HDESC_RETPOLICY
* CPPI5_INFO2_HDESC_EARLYRET
* CPPI5_INFO2_DESC_RETPUSHPOLICY
* @ return_ring_id : Packet Return Queue / Ring id , value 0 xFFFF reserved
*/
static inline void cppi5_desc_set_retpolicy(struct cppi5_desc_hdr_t *desc_hdr,
u32 flags, u32 return_ring_id)
{
desc_hdr->pkt_info2 &= ~(CPPI5_INFO2_DESC_RETP_MASK |
CPPI5_INFO2_DESC_RETQ_MASK);
desc_hdr->pkt_info2 |= flags & CPPI5_INFO2_DESC_RETP_MASK;
desc_hdr->pkt_info2 |= return_ring_id & CPPI5_INFO2_DESC_RETQ_MASK;
}
/**
* cppi5_desc_get_tags_ids - get Packet Src / Dst Tags from Desc
* @ desc_hdr : packet / TR descriptor header
* @ src_tag_id : Source Tag
* @ dst_tag_id : Dest Tag
*
* Returns Packet Src / Dst Tags from packet / TR descriptor
*/
static inline void cppi5_desc_get_tags_ids(struct cppi5_desc_hdr_t *desc_hdr,
u32 *src_tag_id, u32 *dst_tag_id)
{
if (src_tag_id)
*src_tag_id = (desc_hdr->src_dst_tag &
CPPI5_INFO3_DESC_SRCTAG_MASK) >>
CPPI5_INFO3_DESC_SRCTAG_SHIFT;
if (dst_tag_id)
*dst_tag_id = desc_hdr->src_dst_tag &
CPPI5_INFO3_DESC_DSTTAG_MASK;
}
/**
* cppi5_desc_set_tags_ids - set Packet Src / Dst Tags in HDesc
* @ desc_hdr : packet / TR descriptor header
* @ src_tag_id : Source Tag
* @ dst_tag_id : Dest Tag
*
* Returns Packet Src / Dst Tags from packet / TR descriptor
*/
static inline void cppi5_desc_set_tags_ids(struct cppi5_desc_hdr_t *desc_hdr,
u32 src_tag_id, u32 dst_tag_id)
{
desc_hdr->src_dst_tag = (src_tag_id << CPPI5_INFO3_DESC_SRCTAG_SHIFT) &
CPPI5_INFO3_DESC_SRCTAG_MASK;
desc_hdr->src_dst_tag |= dst_tag_id & CPPI5_INFO3_DESC_DSTTAG_MASK;
}
/**
* cppi5_hdesc_calc_size - Calculate Host Packet Descriptor size
* @ epib : is EPIB present
* @ psdata_size : PSDATA size
* @ sw_data_size : SWDATA size
*
* Returns required Host Packet Descriptor size
* 0 - if PSDATA > CPPI5_INFO0_HDESC_PSDATA_MAX_SIZE
*/
static inline u32 cppi5_hdesc_calc_size(bool epib, u32 psdata_size,
u32 sw_data_size)
{
u32 desc_size;
if (psdata_size > CPPI5_INFO0_HDESC_PSDATA_MAX_SIZE)
return 0 ;
desc_size = sizeof (struct cppi5_host_desc_t) + psdata_size +
sw_data_size;
if (epib)
desc_size += CPPI5_INFO0_HDESC_EPIB_SIZE;
return ALIGN(desc_size, CPPI5_DESC_MIN_ALIGN);
}
/**
* cppi5_hdesc_init - Init Host Packet Descriptor size
* @ desc : Host packet descriptor
* @ flags : supported values
* CPPI5_INFO0_HDESC_EPIB_PRESENT
* CPPI5_INFO0_HDESC_PSINFO_LOCATION
* @ psdata_size : PSDATA size
*
* Returns required Host Packet Descriptor size
* 0 - if PSDATA > CPPI5_INFO0_HDESC_PSDATA_MAX_SIZE
*/
static inline void cppi5_hdesc_init(struct cppi5_host_desc_t *desc, u32 flags,
u32 psdata_size)
{
desc->hdr.pkt_info0 = (CPPI5_INFO0_DESC_TYPE_VAL_HOST <<
CPPI5_INFO0_HDESC_TYPE_SHIFT) | (flags);
desc->hdr.pkt_info0 |= ((psdata_size >> 2 ) <<
CPPI5_INFO0_HDESC_PSINFO_SIZE_SHIFT) &
CPPI5_INFO0_HDESC_PSINFO_SIZE_MASK;
desc->next_desc = 0 ;
}
/**
* cppi5_hdesc_update_flags - Replace descriptor flags
* @ desc : Host packet descriptor
* @ flags : supported values
* CPPI5_INFO0_HDESC_EPIB_PRESENT
* CPPI5_INFO0_HDESC_PSINFO_LOCATION
*/
static inline void cppi5_hdesc_update_flags(struct cppi5_host_desc_t *desc,
u32 flags)
{
desc->hdr.pkt_info0 &= ~(CPPI5_INFO0_HDESC_EPIB_PRESENT |
CPPI5_INFO0_HDESC_PSINFO_LOCATION);
desc->hdr.pkt_info0 |= flags;
}
/**
* cppi5_hdesc_update_psdata_size - Replace PSdata size
* @ desc : Host packet descriptor
* @ psdata_size : PSDATA size
*/
static inline void
cppi5_hdesc_update_psdata_size(struct cppi5_host_desc_t *desc, u32 psdata_size)
{
desc->hdr.pkt_info0 &= ~CPPI5_INFO0_HDESC_PSINFO_SIZE_MASK;
desc->hdr.pkt_info0 |= ((psdata_size >> 2 ) <<
CPPI5_INFO0_HDESC_PSINFO_SIZE_SHIFT) &
CPPI5_INFO0_HDESC_PSINFO_SIZE_MASK;
}
/**
* cppi5_hdesc_get_psdata_size - get PSdata size in bytes
* @ desc : Host packet descriptor
*/
static inline u32 cppi5_hdesc_get_psdata_size(struct cppi5_host_desc_t *desc)
{
u32 psdata_size = 0 ;
if (!(desc->hdr.pkt_info0 & CPPI5_INFO0_HDESC_PSINFO_LOCATION))
psdata_size = (desc->hdr.pkt_info0 &
CPPI5_INFO0_HDESC_PSINFO_SIZE_MASK) >>
CPPI5_INFO0_HDESC_PSINFO_SIZE_SHIFT;
return (psdata_size << 2 );
}
/**
* cppi5_hdesc_get_pktlen - get Packet Length from HDesc
* @ desc : Host packet descriptor
*
* Returns Packet Length from Host Packet Descriptor
*/
static inline u32 cppi5_hdesc_get_pktlen(struct cppi5_host_desc_t *desc)
{
return (desc->hdr.pkt_info0 & CPPI5_INFO0_HDESC_PKTLEN_MASK);
}
/**
* cppi5_hdesc_set_pktlen - set Packet Length in HDesc
* @ desc : Host packet descriptor
*/
static inline void cppi5_hdesc_set_pktlen(struct cppi5_host_desc_t *desc,
u32 pkt_len)
{
desc->hdr.pkt_info0 &= ~CPPI5_INFO0_HDESC_PKTLEN_MASK;
desc->hdr.pkt_info0 |= (pkt_len & CPPI5_INFO0_HDESC_PKTLEN_MASK);
}
/**
* cppi5_hdesc_get_psflags - get Protocol Specific Flags from HDesc
* @ desc : Host packet descriptor
*
* Returns Protocol Specific Flags from Host Packet Descriptor
*/
static inline u32 cppi5_hdesc_get_psflags(struct cppi5_host_desc_t *desc)
{
return (desc->hdr.pkt_info1 & CPPI5_INFO1_HDESC_PSFLGS_MASK) >>
CPPI5_INFO1_HDESC_PSFLGS_SHIFT;
}
/**
* cppi5_hdesc_set_psflags - set Protocol Specific Flags in HDesc
* @ desc : Host packet descriptor
*/
static inline void cppi5_hdesc_set_psflags(struct cppi5_host_desc_t *desc,
u32 ps_flags)
{
desc->hdr.pkt_info1 &= ~CPPI5_INFO1_HDESC_PSFLGS_MASK;
desc->hdr.pkt_info1 |= (ps_flags <<
CPPI5_INFO1_HDESC_PSFLGS_SHIFT) &
CPPI5_INFO1_HDESC_PSFLGS_MASK;
}
/**
* cppi5_hdesc_get_errflags - get Packet Type from HDesc
* @ desc : Host packet descriptor
*/
static inline u32 cppi5_hdesc_get_pkttype(struct cppi5_host_desc_t *desc)
{
return (desc->hdr.pkt_info2 & CPPI5_INFO2_HDESC_PKTTYPE_MASK) >>
CPPI5_INFO2_HDESC_PKTTYPE_SHIFT;
}
/**
* cppi5_hdesc_get_errflags - set Packet Type in HDesc
* @ desc : Host packet descriptor
* @ pkt_type : Packet Type
*/
static inline void cppi5_hdesc_set_pkttype(struct cppi5_host_desc_t *desc,
u32 pkt_type)
{
desc->hdr.pkt_info2 &= ~CPPI5_INFO2_HDESC_PKTTYPE_MASK;
desc->hdr.pkt_info2 |=
(pkt_type << CPPI5_INFO2_HDESC_PKTTYPE_SHIFT) &
CPPI5_INFO2_HDESC_PKTTYPE_MASK;
}
/**
* cppi5_hdesc_attach_buf - attach buffer to HDesc
* @ desc : Host packet descriptor
* @ buf : Buffer physical address
* @ buf_data_len : Buffer length
* @ obuf : Original Buffer physical address
* @ obuf_len : Original Buffer length
*
* Attaches buffer to Host Packet Descriptor
*/
static inline void cppi5_hdesc_attach_buf(struct cppi5_host_desc_t *desc,
dma_addr_t buf, u32 buf_data_len,
dma_addr_t obuf, u32 obuf_len)
{
desc->buf_ptr = buf;
desc->buf_info1 = buf_data_len & CPPI5_BUFINFO1_HDESC_DATA_LEN_MASK;
desc->org_buf_ptr = obuf;
desc->org_buf_len = obuf_len & CPPI5_OBUFINFO0_HDESC_BUF_LEN_MASK;
}
static inline void cppi5_hdesc_get_obuf(struct cppi5_host_desc_t *desc,
dma_addr_t *obuf, u32 *obuf_len)
{
*obuf = desc->org_buf_ptr;
*obuf_len = desc->org_buf_len & CPPI5_OBUFINFO0_HDESC_BUF_LEN_MASK;
}
static inline void cppi5_hdesc_reset_to_original(struct cppi5_host_desc_t *desc)
{
desc->buf_ptr = desc->org_buf_ptr;
desc->buf_info1 = desc->org_buf_len;
}
/**
* cppi5_hdesc_link_hbdesc - link Host Buffer Descriptor to HDesc
* @ desc : Host Packet Descriptor
* @ buf_desc : Host Buffer Descriptor physical address
*
* add and link Host Buffer Descriptor to HDesc
*/
static inline void cppi5_hdesc_link_hbdesc(struct cppi5_host_desc_t *desc,
dma_addr_t hbuf_desc)
{
desc->next_desc = hbuf_desc;
}
static inline dma_addr_t
cppi5_hdesc_get_next_hbdesc(struct cppi5_host_desc_t *desc)
{
return (dma_addr_t)desc->next_desc;
}
static inline void cppi5_hdesc_reset_hbdesc(struct cppi5_host_desc_t *desc)
{
desc->hdr = (struct cppi5_desc_hdr_t) { 0 };
desc->next_desc = 0 ;
}
/**
* cppi5_hdesc_epib_present - check if EPIB present
* @ desc_hdr : packet descriptor / TR header
*
* Returns true if EPIB present in the packet
*/
static inline bool cppi5_hdesc_epib_present(struct cppi5_desc_hdr_t *desc_hdr)
{
return !!(desc_hdr->pkt_info0 & CPPI5_INFO0_HDESC_EPIB_PRESENT);
}
/**
* cppi5_hdesc_get_psdata - Get pointer on PSDATA
* @ desc : Host packet descriptor
*
* Returns pointer on PSDATA in HDesc .
* NULL - if ps_data placed at the start of data buffer .
*/
static inline void *cppi5_hdesc_get_psdata(struct cppi5_host_desc_t *desc)
{
u32 psdata_size;
void *psdata;
if (desc->hdr.pkt_info0 & CPPI5_INFO0_HDESC_PSINFO_LOCATION)
return NULL;
psdata_size = (desc->hdr.pkt_info0 &
CPPI5_INFO0_HDESC_PSINFO_SIZE_MASK) >>
CPPI5_INFO0_HDESC_PSINFO_SIZE_SHIFT;
if (!psdata_size)
return NULL;
psdata = &desc->epib;
if (cppi5_hdesc_epib_present(&desc->hdr))
psdata += CPPI5_INFO0_HDESC_EPIB_SIZE;
return psdata;
}
/**
* cppi5_hdesc_get_swdata - Get pointer on swdata
* @ desc : Host packet descriptor
*
* Returns pointer on SWDATA in HDesc .
* NOTE . It ' s caller responsibility to be sure hdesc actually has swdata .
*/
static inline void *cppi5_hdesc_get_swdata(struct cppi5_host_desc_t *desc)
{
u32 psdata_size = 0 ;
void *swdata;
if (!(desc->hdr.pkt_info0 & CPPI5_INFO0_HDESC_PSINFO_LOCATION))
psdata_size = (desc->hdr.pkt_info0 &
CPPI5_INFO0_HDESC_PSINFO_SIZE_MASK) >>
CPPI5_INFO0_HDESC_PSINFO_SIZE_SHIFT;
swdata = &desc->epib;
if (cppi5_hdesc_epib_present(&desc->hdr))
swdata += CPPI5_INFO0_HDESC_EPIB_SIZE;
swdata += (psdata_size << 2 );
return swdata;
}
/* ================================== TR ================================== */
#define CPPI5_TR_TYPE_SHIFT (0 U)
#define CPPI5_TR_TYPE_MASK GENMASK(3 , 0 )
#define CPPI5_TR_STATIC BIT(4 )
#define CPPI5_TR_WAIT BIT(5 )
#define CPPI5_TR_EVENT_SIZE_SHIFT (6 U)
#define CPPI5_TR_EVENT_SIZE_MASK GENMASK(7 , 6 )
#define CPPI5_TR_TRIGGER0_SHIFT (8 U)
#define CPPI5_TR_TRIGGER0_MASK GENMASK(9 , 8 )
#define CPPI5_TR_TRIGGER0_TYPE_SHIFT (10 U)
#define CPPI5_TR_TRIGGER0_TYPE_MASK GENMASK(11 , 10 )
#define CPPI5_TR_TRIGGER1_SHIFT (12 U)
#define CPPI5_TR_TRIGGER1_MASK GENMASK(13 , 12 )
#define CPPI5_TR_TRIGGER1_TYPE_SHIFT (14 U)
#define CPPI5_TR_TRIGGER1_TYPE_MASK GENMASK(15 , 14 )
#define CPPI5_TR_CMD_ID_SHIFT (16 U)
#define CPPI5_TR_CMD_ID_MASK GENMASK(23 , 16 )
#define CPPI5_TR_CSF_FLAGS_SHIFT (24 U)
#define CPPI5_TR_CSF_FLAGS_MASK GENMASK(31 , 24 )
#define CPPI5_TR_CSF_SA_INDIRECT BIT(0 )
#define CPPI5_TR_CSF_DA_INDIRECT BIT(1 )
#define CPPI5_TR_CSF_SUPR_EVT BIT(2 )
#define CPPI5_TR_CSF_EOL_ADV_SHIFT (4 U)
#define CPPI5_TR_CSF_EOL_ADV_MASK GENMASK(6 , 4 )
#define CPPI5_TR_CSF_EOL_ICNT0 BIT(4 )
#define CPPI5_TR_CSF_EOP BIT(7 )
/**
* enum cppi5_tr_types - TR types
* @ CPPI5_TR_TYPE0 : One dimensional data move
* @ CPPI5_TR_TYPE1 : Two dimensional data move
* @ CPPI5_TR_TYPE2 : Three dimensional data move
* @ CPPI5_TR_TYPE3 : Four dimensional data move
* @ CPPI5_TR_TYPE4 : Four dimensional data move with data formatting
* @ CPPI5_TR_TYPE5 : Four dimensional Cache Warm
* @ CPPI5_TR_TYPE8 : Four Dimensional Block Move
* @ CPPI5_TR_TYPE9 : Four Dimensional Block Move with Repacking
* @ CPPI5_TR_TYPE10 : Two Dimensional Block Move
* @ CPPI5_TR_TYPE11 : Two Dimensional Block Move with Repacking
* @ CPPI5_TR_TYPE15 : Four Dimensional Block Move with Repacking and
* Indirection
*/
enum cppi5_tr_types {
CPPI5_TR_TYPE0 = 0 ,
CPPI5_TR_TYPE1,
CPPI5_TR_TYPE2,
CPPI5_TR_TYPE3,
CPPI5_TR_TYPE4,
CPPI5_TR_TYPE5,
/* type6-7: Reserved */
CPPI5_TR_TYPE8 = 8 ,
CPPI5_TR_TYPE9,
CPPI5_TR_TYPE10,
CPPI5_TR_TYPE11,
/* type12-14: Reserved */
CPPI5_TR_TYPE15 = 15 ,
CPPI5_TR_TYPE_MAX
};
/**
* enum cppi5_tr_event_size - TR Flags EVENT_SIZE field specifies when an event
* is generated for each TR .
* @ CPPI5_TR_EVENT_SIZE_COMPLETION : When TR is complete and all status for
* the TR has been received
* @ CPPI5_TR_EVENT_SIZE_ICNT1_DEC : Type 0 : when the last data transaction
* is sent for the TR
* Type 1 - 11 : when ICNT1 is decremented
* @ CPPI5_TR_EVENT_SIZE_ICNT2_DEC : Type 0 - 1 , 10 - 11 : when the last data
* transaction is sent for the TR
* All other types : when ICNT2 is
* decremented
* @ CPPI5_TR_EVENT_SIZE_ICNT3_DEC : Type 0 - 2 , 10 - 11 : when the last data
* transaction is sent for the TR
* All other types : when ICNT3 is
* decremented
*/
enum cppi5_tr_event_size {
CPPI5_TR_EVENT_SIZE_COMPLETION,
CPPI5_TR_EVENT_SIZE_ICNT1_DEC,
CPPI5_TR_EVENT_SIZE_ICNT2_DEC,
CPPI5_TR_EVENT_SIZE_ICNT3_DEC,
CPPI5_TR_EVENT_SIZE_MAX
};
/**
* enum cppi5_tr_trigger - TR Flags TRIGGERx field specifies the type of trigger
* used to enable the TR to transfer data as specified
* by TRIGGERx_TYPE field .
* @ CPPI5_TR_TRIGGER_NONE : No trigger
* @ CPPI5_TR_TRIGGER_GLOBAL0 : Global trigger 0
* @ CPPI5_TR_TRIGGER_GLOBAL1 : Global trigger 1
* @ CPPI5_TR_TRIGGER_LOCAL_EVENT : Local Event
*/
enum cppi5_tr_trigger {
CPPI5_TR_TRIGGER_NONE,
CPPI5_TR_TRIGGER_GLOBAL0,
CPPI5_TR_TRIGGER_GLOBAL1,
CPPI5_TR_TRIGGER_LOCAL_EVENT,
CPPI5_TR_TRIGGER_MAX
};
/**
* enum cppi5_tr_trigger_type - TR Flags TRIGGERx_TYPE field specifies the type
* of data transfer that will be enabled by
* receiving a trigger as specified by TRIGGERx .
* @ CPPI5_TR_TRIGGER_TYPE_ICNT1_DEC : The second inner most loop ( ICNT1 ) will
* be decremented by 1
* @ CPPI5_TR_TRIGGER_TYPE_ICNT2_DEC : The third inner most loop ( ICNT2 ) will
* be decremented by 1
* @ CPPI5_TR_TRIGGER_TYPE_ICNT3_DEC : The outer most loop ( ICNT3 ) will be
* decremented by 1
* @ CPPI5_TR_TRIGGER_TYPE_ALL : The entire TR will be allowed to
* complete
*/
enum cppi5_tr_trigger_type {
CPPI5_TR_TRIGGER_TYPE_ICNT1_DEC,
CPPI5_TR_TRIGGER_TYPE_ICNT2_DEC,
CPPI5_TR_TRIGGER_TYPE_ICNT3_DEC,
CPPI5_TR_TRIGGER_TYPE_ALL,
CPPI5_TR_TRIGGER_TYPE_MAX
};
typedef u32 cppi5_tr_flags_t;
/**
* struct cppi5_tr_type0_t - Type 0 ( One dimensional data move ) TR ( 16 byte )
* @ flags : TR flags ( type , triggers , event , configuration )
* @ icnt0 : Total loop iteration count for level 0 ( innermost )
* @ _ reserved : Not used
* @ addr : Starting address for the source data or destination data
*/
struct cppi5_tr_type0_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 _reserved;
u64 addr;
} __aligned(16 ) __packed;
/**
* struct cppi5_tr_type1_t - Type 1 ( Two dimensional data move ) TR ( 32 byte )
* @ flags : TR flags ( type , triggers , event , configuration )
* @ icnt0 : Total loop iteration count for level 0 ( innermost )
* @ icnt1 : Total loop iteration count for level 1
* @ addr : Starting address for the source data or destination data
* @ dim1 : Signed dimension for loop level 1
*/
struct cppi5_tr_type1_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 icnt1;
u64 addr;
s32 dim1;
} __aligned(32 ) __packed;
/**
* struct cppi5_tr_type2_t - Type 2 ( Three dimensional data move ) TR ( 32 byte )
* @ flags : TR flags ( type , triggers , event , configuration )
* @ icnt0 : Total loop iteration count for level 0 ( innermost )
* @ icnt1 : Total loop iteration count for level 1
* @ addr : Starting address for the source data or destination data
* @ dim1 : Signed dimension for loop level 1
* @ icnt2 : Total loop iteration count for level 2
* @ _ reserved : Not used
* @ dim2 : Signed dimension for loop level 2
*/
struct cppi5_tr_type2_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 icnt1;
u64 addr;
s32 dim1;
u16 icnt2;
u16 _reserved;
s32 dim2;
} __aligned(32 ) __packed;
/**
* struct cppi5_tr_type3_t - Type 3 ( Four dimensional data move ) TR ( 32 byte )
* @ flags : TR flags ( type , triggers , event , configuration )
* @ icnt0 : Total loop iteration count for level 0 ( innermost )
* @ icnt1 : Total loop iteration count for level 1
* @ addr : Starting address for the source data or destination data
* @ dim1 : Signed dimension for loop level 1
* @ icnt2 : Total loop iteration count for level 2
* @ icnt3 : Total loop iteration count for level 3 ( outermost )
* @ dim2 : Signed dimension for loop level 2
* @ dim3 : Signed dimension for loop level 3
*/
struct cppi5_tr_type3_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 icnt1;
u64 addr;
s32 dim1;
u16 icnt2;
u16 icnt3;
s32 dim2;
s32 dim3;
} __aligned(32 ) __packed;
/**
* struct cppi5_tr_type15_t - Type 15 ( Four Dimensional Block Copy with
* Repacking and Indirection Support ) TR ( 64 byte )
* @ flags : TR flags ( type , triggers , event , configuration )
* @ icnt0 : Total loop iteration count for level 0 ( innermost ) for
* source
* @ icnt1 : Total loop iteration count for level 1 for source
* @ addr : Starting address for the source data
* @ dim1 : Signed dimension for loop level 1 for source
* @ icnt2 : Total loop iteration count for level 2 for source
* @ icnt3 : Total loop iteration count for level 3 ( outermost ) for
* source
* @ dim2 : Signed dimension for loop level 2 for source
* @ dim3 : Signed dimension for loop level 3 for source
* @ _ reserved : Not used
* @ ddim1 : Signed dimension for loop level 1 for destination
* @ daddr : Starting address for the destination data
* @ ddim2 : Signed dimension for loop level 2 for destination
* @ ddim3 : Signed dimension for loop level 3 for destination
* @ dicnt0 : Total loop iteration count for level 0 ( innermost ) for
* destination
* @ dicnt1 : Total loop iteration count for level 1 for destination
* @ dicnt2 : Total loop iteration count for level 2 for destination
* @ sicnt3 : Total loop iteration count for level 3 ( outermost ) for
* destination
*/
struct cppi5_tr_type15_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 icnt1;
u64 addr;
s32 dim1;
u16 icnt2;
u16 icnt3;
s32 dim2;
s32 dim3;
u32 _reserved;
s32 ddim1;
u64 daddr;
s32 ddim2;
s32 ddim3;
u16 dicnt0;
u16 dicnt1;
u16 dicnt2;
u16 dicnt3;
} __aligned(64 ) __packed;
/**
* struct cppi5_tr_resp_t - TR response record
* @ status : Status type and info
* @ _ reserved : Not used
* @ cmd_id : Command ID for the TR for TR identification
* @ flags : Configuration Specific Flags
*/
struct cppi5_tr_resp_t {
u8 status;
u8 _reserved;
u8 cmd_id;
u8 flags;
} __packed;
#define CPPI5_TR_RESPONSE_STATUS_TYPE_SHIFT (0 U)
#define CPPI5_TR_RESPONSE_STATUS_TYPE_MASK GENMASK(3 , 0 )
#define CPPI5_TR_RESPONSE_STATUS_INFO_SHIFT (4 U)
#define CPPI5_TR_RESPONSE_STATUS_INFO_MASK GENMASK(7 , 4 )
#define CPPI5_TR_RESPONSE_CMDID_SHIFT (16 U)
#define CPPI5_TR_RESPONSE_CMDID_MASK GENMASK(23 , 16 )
#define CPPI5_TR_RESPONSE_CFG_SPECIFIC_SHIFT (24 U)
#define CPPI5_TR_RESPONSE_CFG_SPECIFIC_MASK GENMASK(31 , 24 )
/**
* enum cppi5_tr_resp_status_type - TR Response Status Type field is used to
* determine what type of status is being
* returned .
* @ CPPI5_TR_RESPONSE_STATUS_NONE : No error , completion : completed
* @ CPPI5_TR_RESPONSE_STATUS_TRANSFER_ERR : Transfer Error , completion : none
* or partially completed
* @ CPPI5_TR_RESPONSE_STATUS_ABORTED_ERR : Aborted Error , completion : none
* or partially completed
* @ CPPI5_TR_RESPONSE_STATUS_SUBMISSION_ERR : Submission Error , completion :
* none
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_ERR : Unsupported Error , completion :
* none
* @ CPPI5_TR_RESPONSE_STATUS_TRANSFER_EXCEPTION : Transfer Exception , completion :
* partially completed
* @ CPPI5_TR_RESPONSE_STATUS__TEARDOWN_FLUSH : Teardown Flush , completion : none
*/
enum cppi5_tr_resp_status_type {
CPPI5_TR_RESPONSE_STATUS_NONE,
CPPI5_TR_RESPONSE_STATUS_TRANSFER_ERR,
CPPI5_TR_RESPONSE_STATUS_ABORTED_ERR,
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_ERR,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_ERR,
CPPI5_TR_RESPONSE_STATUS_TRANSFER_EXCEPTION,
CPPI5_TR_RESPONSE_STATUS__TEARDOWN_FLUSH,
CPPI5_TR_RESPONSE_STATUS_MAX
};
/**
* enum cppi5_tr_resp_status_submission - TR Response Status field values which
* corresponds Submission Error
* @ CPPI5_TR_RESPONSE_STATUS_SUBMISSION_ICNT0 : ICNT0 was 0
* @ CPPI5_TR_RESPONSE_STATUS_SUBMISSION_FIFO_FULL : Channel FIFO was full when TR
* received
* @ CPPI5_TR_RESPONSE_STATUS_SUBMISSION_OWN : Channel is not owned by the
* submitter
*/
enum cppi5_tr_resp_status_submission {
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_ICNT0,
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_FIFO_FULL,
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_OWN,
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_MAX
};
/**
* enum cppi5_tr_resp_status_unsupported - TR Response Status field values which
* corresponds Unsupported Error
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_TR_TYPE : TR Type not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_STATIC : STATIC not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_EOL : EOL not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_CFG_SPECIFIC : CONFIGURATION SPECIFIC
* not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_AMODE : AMODE not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_ELTYPE : ELTYPE not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_DFMT : DFMT not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_SECTR : SECTR not supported
* @ CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_AMODE_SPECIFIC : AMODE SPECIFIC field
* not supported
*/
enum cppi5_tr_resp_status_unsupported {
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_TR_TYPE,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_STATIC,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_EOL,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_CFG_SPECIFIC,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_AMODE,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_ELTYPE,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_DFMT,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_SECTR,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_AMODE_SPECIFIC,
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_MAX
};
/**
* cppi5_trdesc_calc_size - Calculate TR Descriptor size
* @ tr_count : number of TR records
* @ tr_size : Nominal size of TR record ( max ) [ 16 , 32 , 64 , 128 ]
*
* Returns required TR Descriptor size
*/
static inline size_t cppi5_trdesc_calc_size(u32 tr_count, u32 tr_size)
{
/*
* The Size of a TR descriptor is :
* 1 x tr_size : the first 16 bytes is used by the packet info block +
* tr_count x tr_size : Transfer Request Records +
* tr_count x sizeof ( struct cppi5_tr_resp_t ) : Transfer Response Records
*/
return tr_size * (tr_count + 1 ) +
sizeof (struct cppi5_tr_resp_t) * tr_count;
}
/**
* cppi5_trdesc_init - Init TR Descriptor
* @ desc : TR Descriptor
* @ tr_count : number of TR records
* @ tr_size : Nominal size of TR record ( max ) [ 16 , 32 , 64 , 128 ]
* @ reload_idx : Absolute index to jump to on the 2 nd and following passes
* through the TR packet .
* @ reload_count : Number of times to jump from last entry to reload_idx . 0 x1ff
* indicates infinite looping .
*
* Init TR Descriptor
*/
static inline void cppi5_trdesc_init(struct cppi5_desc_hdr_t *desc_hdr,
u32 tr_count, u32 tr_size, u32 reload_idx,
u32 reload_count)
{
desc_hdr->pkt_info0 = CPPI5_INFO0_DESC_TYPE_VAL_TR <<
CPPI5_INFO0_HDESC_TYPE_SHIFT;
desc_hdr->pkt_info0 |=
(reload_count << CPPI5_INFO0_TRDESC_RLDCNT_SHIFT) &
CPPI5_INFO0_TRDESC_RLDCNT_MASK;
desc_hdr->pkt_info0 |=
(reload_idx << CPPI5_INFO0_TRDESC_RLDIDX_SHIFT) &
CPPI5_INFO0_TRDESC_RLDIDX_MASK;
desc_hdr->pkt_info0 |= (tr_count - 1 ) & CPPI5_INFO0_TRDESC_LASTIDX_MASK;
desc_hdr->pkt_info1 |= ((ffs(tr_size >> 4 ) - 1 ) <<
CPPI5_INFO1_TRDESC_RECSIZE_SHIFT) &
CPPI5_INFO1_TRDESC_RECSIZE_MASK;
}
/**
* cppi5_tr_init - Init TR record
* @ flags : Pointer to the TR ' s flags
* @ type : TR type
* @ static_tr : TR is static
* @ wait : Wait for TR completion before allow the next TR to start
* @ event_size : output event generation cfg
* @ cmd_id : TR identifier ( application specifics )
*
* Init TR record
*/
static inline void cppi5_tr_init(cppi5_tr_flags_t *flags,
enum cppi5_tr_types type, bool static_tr,
bool wait, enum cppi5_tr_event_size event_size,
u32 cmd_id)
{
*flags = type;
*flags |= (event_size << CPPI5_TR_EVENT_SIZE_SHIFT) &
CPPI5_TR_EVENT_SIZE_MASK;
*flags |= (cmd_id << CPPI5_TR_CMD_ID_SHIFT) &
CPPI5_TR_CMD_ID_MASK;
if (static_tr && (type == CPPI5_TR_TYPE8 || type == CPPI5_TR_TYPE9))
*flags |= CPPI5_TR_STATIC;
if (wait)
*flags |= CPPI5_TR_WAIT;
}
/**
* cppi5_tr_set_trigger - Configure trigger0 / 1 and trigger0 / 1 _ type
* @ flags : Pointer to the TR ' s flags
* @ trigger0 : trigger0 selection
* @ trigger0_type : type of data transfer that will be enabled by trigger0
* @ trigger1 : trigger1 selection
* @ trigger1_type : type of data transfer that will be enabled by trigger1
*
* Configure the triggers for the TR
*/
static inline void cppi5_tr_set_trigger(cppi5_tr_flags_t *flags,
enum cppi5_tr_trigger trigger0,
enum cppi5_tr_trigger_type trigger0_type,
enum cppi5_tr_trigger trigger1,
enum cppi5_tr_trigger_type trigger1_type)
{
*flags &= ~(CPPI5_TR_TRIGGER0_MASK | CPPI5_TR_TRIGGER0_TYPE_MASK |
CPPI5_TR_TRIGGER1_MASK | CPPI5_TR_TRIGGER1_TYPE_MASK);
*flags |= (trigger0 << CPPI5_TR_TRIGGER0_SHIFT) &
CPPI5_TR_TRIGGER0_MASK;
*flags |= (trigger0_type << CPPI5_TR_TRIGGER0_TYPE_SHIFT) &
CPPI5_TR_TRIGGER0_TYPE_MASK;
*flags |= (trigger1 << CPPI5_TR_TRIGGER1_SHIFT) &
CPPI5_TR_TRIGGER1_MASK;
*flags |= (trigger1_type << CPPI5_TR_TRIGGER1_TYPE_SHIFT) &
CPPI5_TR_TRIGGER1_TYPE_MASK;
}
/**
* cppi5_tr_cflag_set - Update the Configuration specific flags
* @ flags : Pointer to the TR ' s flags
* @ csf : Configuration specific flags
*
* Set a bit in Configuration Specific Flags section of the TR flags .
*/
static inline void cppi5_tr_csf_set(cppi5_tr_flags_t *flags, u32 csf)
{
*flags &= ~CPPI5_TR_CSF_FLAGS_MASK;
*flags |= (csf << CPPI5_TR_CSF_FLAGS_SHIFT) &
CPPI5_TR_CSF_FLAGS_MASK;
}
#endif /* __TI_CPPI5_H__ */
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