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ti-cppi5.h
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/* 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 (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_INFO1_DESC_FLOWID_DEFAULT CPPI5_INFO1_DESC_FLOWID_MASK #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_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 (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) /** * 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 (18U) #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 * 1-0x1ff = Vector to the Reload Index and resume processing * 0x1ff indicates perpetual loop, infinite reload until the channel is stopped */ #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); } #define CPPI5_TDCM_MARKER (0x1) /** * 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 0xFFFF 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 (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_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 (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) /** * 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 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) { 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__ */