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u-boot/include/linux/soc/ti/cppi5.h

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soc: ti: k3: add CPPI5 description and helpers Add TI Communications Port Programming Interface (CPPI) 5 interface description and helpers Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-05 12:01:23 +00:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* CPPI5 descriptors interface
*
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com
*/
#ifndef __TI_CPPI5_H__
#define __TI_CPPI5_H__
#include <hexdump.h>
#include <linux/bitops.h>
common: Drop linux/bug.h from common header Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-10 17:40:08 +00:00
#include <linux/bug.h>
common: Drop linux/printk.h from common header This old patch was marked as deferred. Bring it back to life, to continue towards the removal of common.h Move this out of the common header and include it only where needed. Signed-off-by: Simon Glass <sjg@chromium.org>
2023-09-15 00:21:46 +00:00
#include <linux/printk.h>
soc: ti: k3: add CPPI5 description and helpers Add TI Communications Port Programming Interface (CPPI) 5 interface description and helpers Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-05 12:01:23 +00:00
/**
* Descriptor header, present in all types of descriptors
*/
struct cppi5_desc_hdr_t {
u32 pkt_info0; /* Packet info word 0 (n/a in Buffer desc) */
u32 pkt_info1; /* Packet info word 1 (n/a in Buffer desc) */
u32 pkt_info2; /* Packet info word 2 Buffer reclamation info */
u32 src_dst_tag; /* Packet info word 3 (n/a in Buffer desc) */
} __packed;
/**
* Host-mode packet and buffer descriptor definition
*/
struct cppi5_host_desc_t {
struct cppi5_desc_hdr_t hdr;
u64 next_desc; /* w4/5: Linking word */
u64 buf_ptr; /* w6/7: Buffer pointer */
u32 buf_info1; /* w8: Buffer valid data length */
u32 org_buf_len; /* w9: Original buffer length */
u64 org_buf_ptr; /* w10/11: Original buffer pointer */
u32 epib[0]; /* Extended Packet Info Data (optional, 4 words) */
/*
* Protocol Specific Data (optional, 0-128 bytes in multiples of 4),
* and/or Other Software Data (0-N bytes, optional)
*/
} __packed;
#define CPPI5_DESC_MIN_ALIGN (16U)
#define CPPI5_INFO0_HDESC_EPIB_SIZE (16U)
#define CPPI5_INFO0_HDESC_PSDATA_MAX_SIZE (128U)
#define CPPI5_INFO0_HDESC_TYPE_SHIFT (30U)
#define CPPI5_INFO0_HDESC_TYPE_MASK GENMASK(31, 30)
#define CPPI5_INFO0_DESC_TYPE_VAL_HOST (1U)
#define CPPI5_INFO0_DESC_TYPE_VAL_MONO (2U)
#define CPPI5_INFO0_DESC_TYPE_VAL_TR (3U)
#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 (22U)
#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 (28U)
#define CPPI5_INFO1_DESC_PKTERROR_MASK GENMASK(31, 28)
#define CPPI5_INFO1_HDESC_PSFLGS_SHIFT (24U)
#define CPPI5_INFO1_HDESC_PSFLGS_MASK GENMASK(27, 24)
#define CPPI5_INFO1_DESC_PKTID_SHIFT (14U)
#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_INFO2_HDESC_PKTTYPE_SHIFT (27U)
#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_RETQ_SHIFT (0)
#define CPPI5_INFO2_DESC_RETQ_MASK GENMASK(15, 0)
#define CPPI5_INFO3_DESC_SRCTAG_SHIFT (16U)
#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)
/*
* Host Packet Descriptor Extended Packet Info Block
*/
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 */
};
/**
* Monolithic-mode packet descriptor
*/
struct cppi5_monolithic_desc_t {
struct cppi5_desc_hdr_t hdr;
u32 epib[0]; /* Extended Packet Info Data (optional, 4 words) */
/*
* Protocol Specific Data (optional, 0-128 bytes in multiples of 4),
* and/or Other Software Data (0-N bytes, optional)
*/
};
#define CPPI5_INFO2_MDESC_DATA_OFFSET_SHIFT (18U)
#define CPPI5_INFO2_MDESC_DATA_OFFSET_MASK GENMASK(26, 18)
/*
* Reload Enable:
* 0 = Finish the packet and place the descriptor back on the return queue
* 1 = Vector to the Reload Index and resume processing
*/
#define CPPI5_INFO0_TRDESC_RLDCNT_SHIFT (20U)
#define CPPI5_INFO0_TRDESC_RLDCNT_MASK GENMASK(28, 20)
#define CPPI5_INFO0_TRDESC_RLDCNT_MAX (0x1ff)
#define CPPI5_INFO0_TRDESC_RLDCNT_INFINITE CPPI5_INFO0_TRDESC_RLDCNT_MAX
#define CPPI5_INFO0_TRDESC_RLDIDX_SHIFT (14U)
#define CPPI5_INFO0_TRDESC_RLDIDX_MASK GENMASK(19, 14)
#define CPPI5_INFO0_TRDESC_RLDIDX_MAX (0x3f)
#define CPPI5_INFO0_TRDESC_LASTIDX_SHIFT (0)
#define CPPI5_INFO0_TRDESC_LASTIDX_MASK GENMASK(13, 0)
#define CPPI5_INFO1_TRDESC_RECSIZE_SHIFT (24U)
#define CPPI5_INFO1_TRDESC_RECSIZE_MASK GENMASK(26, 24)
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_16B (0)
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_32B (1U)
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_64B (2U)
#define CPPI5_INFO1_TRDESC_RECSIZE_VAL_128B (3U)
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);
}
/**
* 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)
{
WARN_ON(!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)
{
WARN_ON(!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)
{
WARN_ON(!desc_hdr);
*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)
{
WARN_ON(!desc_hdr);
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 0xFFFF reserved
*/
static inline void cppi5_desc_set_retpolicy(struct cppi5_desc_hdr_t *desc_hdr,
u32 flags, u32 return_ring_id)
{
WARN_ON(!desc_hdr);
desc_hdr->pkt_info2 |= flags;
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)
{
WARN_ON(!desc_hdr);
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)
{
WARN_ON(!desc_hdr);
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;
//TODO_GS: align
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)
{
WARN_ON(!desc);
WARN_ON(psdata_size > CPPI5_INFO0_HDESC_PSDATA_MAX_SIZE);
WARN_ON(flags & ~(CPPI5_INFO0_HDESC_EPIB_PRESENT |
CPPI5_INFO0_HDESC_PSINFO_LOCATION));
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)
{
WARN_ON(!desc);
WARN_ON(flags & ~(CPPI5_INFO0_HDESC_EPIB_PRESENT |
CPPI5_INFO0_HDESC_PSINFO_LOCATION));
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)
{
WARN_ON(!desc);
WARN_ON(psdata_size > CPPI5_INFO0_HDESC_PSDATA_MAX_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;
WARN_ON(!desc);
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)
{
WARN_ON(!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)
{
WARN_ON(!desc);
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)
{
WARN_ON(!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)
{
WARN_ON(!desc);
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)
{
WARN_ON(!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)
{
WARN_ON(!desc);
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)
{
WARN_ON(!desc);
WARN_ON(!buf && !obuf);
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)
{
WARN_ON(!desc);
WARN_ON(!obuf);
WARN_ON(!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)
{
WARN_ON(!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)
{
WARN_ON(!desc);
WARN_ON(!hbuf_desc);
desc->next_desc = hbuf_desc;
}
static inline dma_addr_t cppi5_hdesc_get_next_hbdesc(
struct cppi5_host_desc_t *desc)
{
WARN_ON(!desc);
return (dma_addr_t)desc->next_desc;
}
static inline void cppi5_hdesc_reset_hbdesc(struct cppi5_host_desc_t *desc)
{
WARN_ON(!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)
{
WARN_ON(!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;
WARN_ON(!desc);
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;
}
static inline u32 *cppi5_hdesc_get_psdata32(struct cppi5_host_desc_t *desc)
{
return (u32 *)cppi5_hdesc_get_psdata(desc);
}
/**
* 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;
WARN_ON(!desc);
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 (0U)
#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 (6U)
#define CPPI5_TR_EVENT_SIZE_MASK GENMASK(7, 6)
#define CPPI5_TR_TRIGGER0_SHIFT (8U)
#define CPPI5_TR_TRIGGER0_MASK GENMASK(9, 8)
#define CPPI5_TR_TRIGGER0_TYPE_SHIFT (10U)
#define CPPI5_TR_TRIGGER0_TYPE_MASK GENMASK(11, 10)
#define CPPI5_TR_TRIGGER1_SHIFT (12U)
#define CPPI5_TR_TRIGGER1_MASK GENMASK(13, 12)
#define CPPI5_TR_TRIGGER1_TYPE_SHIFT (14U)
#define CPPI5_TR_TRIGGER1_TYPE_MASK GENMASK(15, 14)
#define CPPI5_TR_CMD_ID_SHIFT (16U)
#define CPPI5_TR_CMD_ID_MASK GENMASK(23, 16)
#define CPPI5_TR_CSF_FLAGS_SHIFT (24U)
#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 (4U)
#define CPPI5_TR_CSF_EOL_ADV_MASK GENMASK(6, 4)
#define CPPI5_TR_CSF_EOP BIT(7)
/* Udmap TR flags Type field specifies the type of TR. */
enum cppi5_tr_types {
/* type0: One dimensional data move */
CPPI5_TR_TYPE0 = 0,
/* type1: Two dimensional data move */
CPPI5_TR_TYPE1,
/* type2: Three dimensional data move */
CPPI5_TR_TYPE2,
/* type3: Four dimensional data move */
CPPI5_TR_TYPE3,
/* type4: Four dimensional data move with data formatting */
CPPI5_TR_TYPE4,
/* type5: Four dimensional Cache Warm */
CPPI5_TR_TYPE5,
/* type6-7: Reserved */
/* type8: Four Dimensional Block Move */
CPPI5_TR_TYPE8 = 8,
/* type9: Four Dimensional Block Move with Repacking */
CPPI5_TR_TYPE9,
/* type10: Two Dimensional Block Move */
CPPI5_TR_TYPE10,
/* type11: Two Dimensional Block Move with Repacking */
CPPI5_TR_TYPE11,
/* type12-14: Reserved */
/* type15 Four Dimensional Block Move with Repacking and Indirection */
CPPI5_TR_TYPE15 = 15,
CPPI5_TR_TYPE_MAX
};
/*
* Udmap TR Flags EVENT_SIZE field specifies when an event is generated
* for each TR.
*/
enum cppi5_tr_event_size {
/* When TR is complete and all status for the TR has been received */
CPPI5_TR_EVENT_SIZE_COMPLETION,
/*
* Type 0: when the last data transaction is sent for the TR;
* Type 1-11: when ICNT1 is decremented
*/
CPPI5_TR_EVENT_SIZE_ICNT1_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_ICNT2_DEC,
/*
* Type 0-2,10-11: when the last data transaction is sent for the TR;
* All other types: when ICNT3 is decremented
*/
CPPI5_TR_EVENT_SIZE_ICNT3_DEC,
CPPI5_TR_EVENT_SIZE_MAX
};
/*
* Udmap TR Flags TRIGGERx field specifies the type of trigger used to
* enable the TR to transfer data as specified by TRIGGERx_TYPE field.
*/
enum cppi5_tr_trigger {
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 */
CPPI5_TR_TRIGGER_MAX
};
/*
* Udmap TR Flags TRIGGERx_TYPE field specifies the type of data transfer
* that will be enabled by receiving a trigger as specified by TRIGGERx.
*/
enum cppi5_tr_trigger_type {
/* The second inner most loop (ICNT1) will be decremented by 1 */
CPPI5_TR_TRIGGER_TYPE_ICNT1_DEC,
/* The third inner most loop (ICNT2) will be decremented by 1 */
CPPI5_TR_TRIGGER_TYPE_ICNT2_DEC,
/* The outer most loop (ICNT3) will be decremented by 1 */
CPPI5_TR_TRIGGER_TYPE_ICNT3_DEC,
/* The entire TR will be allowed to complete */
CPPI5_TR_TRIGGER_TYPE_ALL,
CPPI5_TR_TRIGGER_TYPE_MAX
};
typedef u32 cppi5_tr_flags_t;
/* Type 0 (One dimensional data move) TR (16 byte) */
struct cppi5_tr_type0_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 unused;
u64 addr;
} __aligned(16) __packed;
/* Type 1 (Two dimensional data move) TR (32 byte) */
struct cppi5_tr_type1_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 icnt1;
u64 addr;
s32 dim1;
} __aligned(32) __packed;
/* Type 2 (Three dimensional data move) TR (32 byte) */
struct cppi5_tr_type2_t {
cppi5_tr_flags_t flags;
u16 icnt0;
u16 icnt1;
u64 addr;
s32 dim1;
u16 icnt2;
u16 unused;
s32 dim2;
} __aligned(32) __packed;
/* Type 3 (Four dimensional data move) TR (32 byte) */
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;
/*
* Type 15 (Four Dimensional Block Copy with Repacking and
* Indirection Support) TR (64 byte).
*/
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 {
u8 status;
u8 reserved;
u8 cmd_id;
u8 flags;
} __packed;
#define CPPI5_TR_RESPONSE_STATUS_TYPE_SHIFT (0U)
#define CPPI5_TR_RESPONSE_STATUS_TYPE_MASK GENMASK(3, 0)
#define CPPI5_TR_RESPONSE_STATUS_INFO_SHIFT (4U)
#define CPPI5_TR_RESPONSE_STATUS_INFO_MASK GENMASK(7, 4)
#define CPPI5_TR_RESPONSE_CMDID_SHIFT (16U)
#define CPPI5_TR_RESPONSE_CMDID_MASK GENMASK(23, 16)
#define CPPI5_TR_RESPONSE_CFG_SPECIFIC_SHIFT (24U)
#define CPPI5_TR_RESPONSE_CFG_SPECIFIC_MASK GENMASK(31, 24)
/*
* Udmap TR Response Status Type field is used to determine
* what type of status is being returned.
*/
enum cppi5_tr_resp_status_type {
CPPI5_TR_RESPONSE_STATUS_COMPLETE, /* None */
CPPI5_TR_RESPONSE_STATUS_TRANSFER_ERR, /* Transfer Error */
CPPI5_TR_RESPONSE_STATUS_ABORTED_ERR, /* Aborted Error */
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_ERR, /* Submission Error */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_ERR, /* Unsup. Feature */
CPPI5_TR_RESPONSE_STATUS_MAX
};
/*
* Udmap TR Response Status field values which corresponds
* CPPI5_TR_RESPONSE_STATUS_SUBMISSION_ERR
*/
enum cppi5_tr_resp_status_submission {
/* ICNT0 was 0 */
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_ICNT0,
/* Channel FIFO was full when TR received */
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_FIFO_FULL,
/* Channel is not owned by the submitter */
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_OWN,
CPPI5_TR_RESPONSE_STATUS_SUBMISSION_MAX
};
/*
* Udmap TR Response Status field values which corresponds
* CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_ERR
*/
enum cppi5_tr_resp_status_unsupported {
/* TR Type not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_TR_TYPE,
/* STATIC not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_STATIC,
/* EOL not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_EOL,
/* CONFIGURATION SPECIFIC not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_CFG_SPECIFIC,
/* AMODE not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_AMODE,
/* ELTYPE not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_ELTYPE,
/* DFMT not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_DFMT,
/* SECTR not supported */
CPPI5_TR_RESPONSE_STATUS_UNSUPPORTED_SECTR,
/* AMODE SPECIFIC field not supported */
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 2nd and following passes
* through the TR packet.
* @reload_count: Number of times to jump from last entry to reload_idx. 0x1ff
* 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)
{
WARN_ON(!desc_hdr);
WARN_ON(tr_count & ~CPPI5_INFO0_TRDESC_LASTIDX_MASK);
WARN_ON(reload_idx > CPPI5_INFO0_TRDESC_RLDIDX_MAX);
WARN_ON(reload_count > CPPI5_INFO0_TRDESC_RLDCNT_MAX);
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)
{
WARN_ON(!flags);
*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)
{
WARN_ON(!flags);
*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)
{
WARN_ON(!flags);
*flags |= (csf << CPPI5_TR_CSF_FLAGS_SHIFT) &
CPPI5_TR_CSF_FLAGS_MASK;
}
#endif /* __TI_CPPI5_H__ */
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