mirror of https://gitee.com/openkylin/linux.git
501 lines
16 KiB
C
501 lines
16 KiB
C
/*
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* Copyright (c) 2005-2011 Atheros Communications Inc.
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* Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _CE_H_
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#define _CE_H_
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#include "hif.h"
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/* Maximum number of Copy Engine's supported */
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#define CE_COUNT_MAX 8
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#define CE_HTT_H2T_MSG_SRC_NENTRIES 2048
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/* Descriptor rings must be aligned to this boundary */
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#define CE_DESC_RING_ALIGN 8
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#define CE_SENDLIST_ITEMS_MAX 12
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#define CE_SEND_FLAG_GATHER 0x00010000
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/*
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* Copy Engine support: low-level Target-side Copy Engine API.
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* This is a hardware access layer used by code that understands
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* how to use copy engines.
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*/
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struct ath10k_ce_pipe;
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#define CE_DESC_FLAGS_GATHER (1 << 0)
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#define CE_DESC_FLAGS_BYTE_SWAP (1 << 1)
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#define CE_DESC_FLAGS_META_DATA_MASK 0xFFFC
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#define CE_DESC_FLAGS_META_DATA_LSB 3
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struct ce_desc {
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__le32 addr;
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__le16 nbytes;
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__le16 flags; /* %CE_DESC_FLAGS_ */
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};
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struct ath10k_ce_ring {
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/* Number of entries in this ring; must be power of 2 */
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unsigned int nentries;
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unsigned int nentries_mask;
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/*
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* For dest ring, this is the next index to be processed
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* by software after it was/is received into.
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*
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* For src ring, this is the last descriptor that was sent
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* and completion processed by software.
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*
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* Regardless of src or dest ring, this is an invariant
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* (modulo ring size):
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* write index >= read index >= sw_index
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*/
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unsigned int sw_index;
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/* cached copy */
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unsigned int write_index;
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/*
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* For src ring, this is the next index not yet processed by HW.
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* This is a cached copy of the real HW index (read index), used
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* for avoiding reading the HW index register more often than
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* necessary.
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* This extends the invariant:
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* write index >= read index >= hw_index >= sw_index
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*
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* For dest ring, this is currently unused.
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*/
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/* cached copy */
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unsigned int hw_index;
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/* Start of DMA-coherent area reserved for descriptors */
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/* Host address space */
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void *base_addr_owner_space_unaligned;
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/* CE address space */
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u32 base_addr_ce_space_unaligned;
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/*
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* Actual start of descriptors.
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* Aligned to descriptor-size boundary.
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* Points into reserved DMA-coherent area, above.
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*/
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/* Host address space */
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void *base_addr_owner_space;
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/* CE address space */
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u32 base_addr_ce_space;
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/*
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* Start of shadow copy of descriptors, within regular memory.
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* Aligned to descriptor-size boundary.
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*/
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void *shadow_base_unaligned;
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struct ce_desc *shadow_base;
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void **per_transfer_context;
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};
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struct ath10k_ce_pipe {
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struct ath10k *ar;
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unsigned int id;
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unsigned int attr_flags;
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u32 ctrl_addr;
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void (*send_cb) (struct ath10k_ce_pipe *ce_state,
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void *per_transfer_send_context,
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u32 buffer,
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unsigned int nbytes,
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unsigned int transfer_id);
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void (*recv_cb) (struct ath10k_ce_pipe *ce_state,
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void *per_transfer_recv_context,
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u32 buffer,
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unsigned int nbytes,
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unsigned int transfer_id,
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unsigned int flags);
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unsigned int src_sz_max;
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struct ath10k_ce_ring *src_ring;
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struct ath10k_ce_ring *dest_ring;
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};
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struct ce_sendlist_item {
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/* e.g. buffer or desc list */
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dma_addr_t data;
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union {
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/* simple buffer */
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unsigned int nbytes;
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/* Rx descriptor list */
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unsigned int ndesc;
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} u;
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/* externally-specified flags; OR-ed with internal flags */
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u32 flags;
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};
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struct ce_sendlist {
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unsigned int num_items;
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struct ce_sendlist_item item[CE_SENDLIST_ITEMS_MAX];
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};
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/* Copy Engine settable attributes */
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struct ce_attr;
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/*==================Send====================*/
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/* ath10k_ce_send flags */
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#define CE_SEND_FLAG_BYTE_SWAP 1
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/*
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* Queue a source buffer to be sent to an anonymous destination buffer.
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* ce - which copy engine to use
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* buffer - address of buffer
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* nbytes - number of bytes to send
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* transfer_id - arbitrary ID; reflected to destination
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* flags - CE_SEND_FLAG_* values
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* Returns 0 on success; otherwise an error status.
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*
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* Note: If no flags are specified, use CE's default data swap mode.
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*
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* Implementation note: pushes 1 buffer to Source ring
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*/
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int ath10k_ce_send(struct ath10k_ce_pipe *ce_state,
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void *per_transfer_send_context,
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u32 buffer,
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unsigned int nbytes,
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/* 14 bits */
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unsigned int transfer_id,
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unsigned int flags);
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void ath10k_ce_send_cb_register(struct ath10k_ce_pipe *ce_state,
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void (*send_cb)(struct ath10k_ce_pipe *ce_state,
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void *transfer_context,
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u32 buffer,
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unsigned int nbytes,
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unsigned int transfer_id),
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int disable_interrupts);
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/* Append a simple buffer (address/length) to a sendlist. */
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void ath10k_ce_sendlist_buf_add(struct ce_sendlist *sendlist,
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u32 buffer,
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unsigned int nbytes,
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/* OR-ed with internal flags */
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u32 flags);
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/*
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* Queue a "sendlist" of buffers to be sent using gather to a single
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* anonymous destination buffer
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* ce - which copy engine to use
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* sendlist - list of simple buffers to send using gather
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* transfer_id - arbitrary ID; reflected to destination
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* Returns 0 on success; otherwise an error status.
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*
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* Implemenation note: Pushes multiple buffers with Gather to Source ring.
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*/
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int ath10k_ce_sendlist_send(struct ath10k_ce_pipe *ce_state,
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void *per_transfer_send_context,
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struct ce_sendlist *sendlist,
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/* 14 bits */
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unsigned int transfer_id);
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/*==================Recv=======================*/
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/*
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* Make a buffer available to receive. The buffer must be at least of a
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* minimal size appropriate for this copy engine (src_sz_max attribute).
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* ce - which copy engine to use
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* per_transfer_recv_context - context passed back to caller's recv_cb
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* buffer - address of buffer in CE space
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* Returns 0 on success; otherwise an error status.
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*
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* Implemenation note: Pushes a buffer to Dest ring.
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*/
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int ath10k_ce_recv_buf_enqueue(struct ath10k_ce_pipe *ce_state,
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void *per_transfer_recv_context,
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u32 buffer);
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void ath10k_ce_recv_cb_register(struct ath10k_ce_pipe *ce_state,
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void (*recv_cb)(struct ath10k_ce_pipe *ce_state,
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void *transfer_context,
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u32 buffer,
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unsigned int nbytes,
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unsigned int transfer_id,
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unsigned int flags));
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/* recv flags */
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/* Data is byte-swapped */
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#define CE_RECV_FLAG_SWAPPED 1
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/*
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* Supply data for the next completed unprocessed receive descriptor.
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* Pops buffer from Dest ring.
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*/
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int ath10k_ce_completed_recv_next(struct ath10k_ce_pipe *ce_state,
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void **per_transfer_contextp,
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u32 *bufferp,
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unsigned int *nbytesp,
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unsigned int *transfer_idp,
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unsigned int *flagsp);
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/*
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* Supply data for the next completed unprocessed send descriptor.
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* Pops 1 completed send buffer from Source ring.
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*/
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int ath10k_ce_completed_send_next(struct ath10k_ce_pipe *ce_state,
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void **per_transfer_contextp,
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u32 *bufferp,
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unsigned int *nbytesp,
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unsigned int *transfer_idp);
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/*==================CE Engine Initialization=======================*/
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/* Initialize an instance of a CE */
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struct ath10k_ce_pipe *ath10k_ce_init(struct ath10k *ar,
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unsigned int ce_id,
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const struct ce_attr *attr);
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/*==================CE Engine Shutdown=======================*/
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/*
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* Support clean shutdown by allowing the caller to revoke
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* receive buffers. Target DMA must be stopped before using
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* this API.
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*/
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int ath10k_ce_revoke_recv_next(struct ath10k_ce_pipe *ce_state,
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void **per_transfer_contextp,
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u32 *bufferp);
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/*
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* Support clean shutdown by allowing the caller to cancel
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* pending sends. Target DMA must be stopped before using
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* this API.
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*/
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int ath10k_ce_cancel_send_next(struct ath10k_ce_pipe *ce_state,
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void **per_transfer_contextp,
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u32 *bufferp,
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unsigned int *nbytesp,
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unsigned int *transfer_idp);
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void ath10k_ce_deinit(struct ath10k_ce_pipe *ce_state);
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/*==================CE Interrupt Handlers====================*/
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void ath10k_ce_per_engine_service_any(struct ath10k *ar);
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void ath10k_ce_per_engine_service(struct ath10k *ar, unsigned int ce_id);
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void ath10k_ce_disable_interrupts(struct ath10k *ar);
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/* ce_attr.flags values */
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/* Use NonSnooping PCIe accesses? */
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#define CE_ATTR_NO_SNOOP 1
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/* Byte swap data words */
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#define CE_ATTR_BYTE_SWAP_DATA 2
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/* Swizzle descriptors? */
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#define CE_ATTR_SWIZZLE_DESCRIPTORS 4
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/* no interrupt on copy completion */
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#define CE_ATTR_DIS_INTR 8
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/* Attributes of an instance of a Copy Engine */
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struct ce_attr {
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/* CE_ATTR_* values */
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unsigned int flags;
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/* #entries in source ring - Must be a power of 2 */
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unsigned int src_nentries;
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/*
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* Max source send size for this CE.
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* This is also the minimum size of a destination buffer.
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*/
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unsigned int src_sz_max;
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/* #entries in destination ring - Must be a power of 2 */
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unsigned int dest_nentries;
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};
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/*
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* When using sendlist_send to transfer multiple buffer fragments, the
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* transfer context of each fragment, except last one, will be filled
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* with CE_SENDLIST_ITEM_CTXT. ce_completed_send will return success for
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* each fragment done with send and the transfer context would be
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* CE_SENDLIST_ITEM_CTXT. Upper layer could use this to identify the
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* status of a send completion.
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*/
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#define CE_SENDLIST_ITEM_CTXT ((void *)0xcecebeef)
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#define SR_BA_ADDRESS 0x0000
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#define SR_SIZE_ADDRESS 0x0004
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#define DR_BA_ADDRESS 0x0008
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#define DR_SIZE_ADDRESS 0x000c
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#define CE_CMD_ADDRESS 0x0018
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#define CE_CTRL1_DST_RING_BYTE_SWAP_EN_MSB 17
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#define CE_CTRL1_DST_RING_BYTE_SWAP_EN_LSB 17
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#define CE_CTRL1_DST_RING_BYTE_SWAP_EN_MASK 0x00020000
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#define CE_CTRL1_DST_RING_BYTE_SWAP_EN_SET(x) \
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(((0 | (x)) << CE_CTRL1_DST_RING_BYTE_SWAP_EN_LSB) & \
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CE_CTRL1_DST_RING_BYTE_SWAP_EN_MASK)
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#define CE_CTRL1_SRC_RING_BYTE_SWAP_EN_MSB 16
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#define CE_CTRL1_SRC_RING_BYTE_SWAP_EN_LSB 16
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#define CE_CTRL1_SRC_RING_BYTE_SWAP_EN_MASK 0x00010000
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#define CE_CTRL1_SRC_RING_BYTE_SWAP_EN_GET(x) \
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(((x) & CE_CTRL1_SRC_RING_BYTE_SWAP_EN_MASK) >> \
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CE_CTRL1_SRC_RING_BYTE_SWAP_EN_LSB)
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#define CE_CTRL1_SRC_RING_BYTE_SWAP_EN_SET(x) \
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(((0 | (x)) << CE_CTRL1_SRC_RING_BYTE_SWAP_EN_LSB) & \
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CE_CTRL1_SRC_RING_BYTE_SWAP_EN_MASK)
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#define CE_CTRL1_DMAX_LENGTH_MSB 15
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#define CE_CTRL1_DMAX_LENGTH_LSB 0
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#define CE_CTRL1_DMAX_LENGTH_MASK 0x0000ffff
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#define CE_CTRL1_DMAX_LENGTH_GET(x) \
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(((x) & CE_CTRL1_DMAX_LENGTH_MASK) >> CE_CTRL1_DMAX_LENGTH_LSB)
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#define CE_CTRL1_DMAX_LENGTH_SET(x) \
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(((0 | (x)) << CE_CTRL1_DMAX_LENGTH_LSB) & CE_CTRL1_DMAX_LENGTH_MASK)
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#define CE_CTRL1_ADDRESS 0x0010
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#define CE_CTRL1_HW_MASK 0x0007ffff
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#define CE_CTRL1_SW_MASK 0x0007ffff
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#define CE_CTRL1_HW_WRITE_MASK 0x00000000
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#define CE_CTRL1_SW_WRITE_MASK 0x0007ffff
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#define CE_CTRL1_RSTMASK 0xffffffff
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#define CE_CTRL1_RESET 0x00000080
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#define CE_CMD_HALT_STATUS_MSB 3
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#define CE_CMD_HALT_STATUS_LSB 3
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#define CE_CMD_HALT_STATUS_MASK 0x00000008
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#define CE_CMD_HALT_STATUS_GET(x) \
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(((x) & CE_CMD_HALT_STATUS_MASK) >> CE_CMD_HALT_STATUS_LSB)
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#define CE_CMD_HALT_STATUS_SET(x) \
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(((0 | (x)) << CE_CMD_HALT_STATUS_LSB) & CE_CMD_HALT_STATUS_MASK)
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#define CE_CMD_HALT_STATUS_RESET 0
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#define CE_CMD_HALT_MSB 0
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#define CE_CMD_HALT_MASK 0x00000001
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#define HOST_IE_COPY_COMPLETE_MSB 0
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#define HOST_IE_COPY_COMPLETE_LSB 0
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#define HOST_IE_COPY_COMPLETE_MASK 0x00000001
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#define HOST_IE_COPY_COMPLETE_GET(x) \
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(((x) & HOST_IE_COPY_COMPLETE_MASK) >> HOST_IE_COPY_COMPLETE_LSB)
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#define HOST_IE_COPY_COMPLETE_SET(x) \
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(((0 | (x)) << HOST_IE_COPY_COMPLETE_LSB) & HOST_IE_COPY_COMPLETE_MASK)
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#define HOST_IE_COPY_COMPLETE_RESET 0
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#define HOST_IE_ADDRESS 0x002c
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#define HOST_IS_DST_RING_LOW_WATERMARK_MASK 0x00000010
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#define HOST_IS_DST_RING_HIGH_WATERMARK_MASK 0x00000008
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#define HOST_IS_SRC_RING_LOW_WATERMARK_MASK 0x00000004
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#define HOST_IS_SRC_RING_HIGH_WATERMARK_MASK 0x00000002
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#define HOST_IS_COPY_COMPLETE_MASK 0x00000001
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#define HOST_IS_ADDRESS 0x0030
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#define MISC_IE_ADDRESS 0x0034
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#define MISC_IS_AXI_ERR_MASK 0x00000400
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#define MISC_IS_DST_ADDR_ERR_MASK 0x00000200
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#define MISC_IS_SRC_LEN_ERR_MASK 0x00000100
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#define MISC_IS_DST_MAX_LEN_VIO_MASK 0x00000080
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#define MISC_IS_DST_RING_OVERFLOW_MASK 0x00000040
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#define MISC_IS_SRC_RING_OVERFLOW_MASK 0x00000020
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#define MISC_IS_ADDRESS 0x0038
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#define SR_WR_INDEX_ADDRESS 0x003c
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#define DST_WR_INDEX_ADDRESS 0x0040
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#define CURRENT_SRRI_ADDRESS 0x0044
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#define CURRENT_DRRI_ADDRESS 0x0048
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#define SRC_WATERMARK_LOW_MSB 31
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#define SRC_WATERMARK_LOW_LSB 16
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#define SRC_WATERMARK_LOW_MASK 0xffff0000
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#define SRC_WATERMARK_LOW_GET(x) \
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(((x) & SRC_WATERMARK_LOW_MASK) >> SRC_WATERMARK_LOW_LSB)
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#define SRC_WATERMARK_LOW_SET(x) \
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(((0 | (x)) << SRC_WATERMARK_LOW_LSB) & SRC_WATERMARK_LOW_MASK)
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#define SRC_WATERMARK_LOW_RESET 0
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#define SRC_WATERMARK_HIGH_MSB 15
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#define SRC_WATERMARK_HIGH_LSB 0
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#define SRC_WATERMARK_HIGH_MASK 0x0000ffff
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#define SRC_WATERMARK_HIGH_GET(x) \
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(((x) & SRC_WATERMARK_HIGH_MASK) >> SRC_WATERMARK_HIGH_LSB)
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#define SRC_WATERMARK_HIGH_SET(x) \
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(((0 | (x)) << SRC_WATERMARK_HIGH_LSB) & SRC_WATERMARK_HIGH_MASK)
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#define SRC_WATERMARK_HIGH_RESET 0
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#define SRC_WATERMARK_ADDRESS 0x004c
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#define DST_WATERMARK_LOW_LSB 16
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#define DST_WATERMARK_LOW_MASK 0xffff0000
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#define DST_WATERMARK_LOW_SET(x) \
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(((0 | (x)) << DST_WATERMARK_LOW_LSB) & DST_WATERMARK_LOW_MASK)
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#define DST_WATERMARK_LOW_RESET 0
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#define DST_WATERMARK_HIGH_MSB 15
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#define DST_WATERMARK_HIGH_LSB 0
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#define DST_WATERMARK_HIGH_MASK 0x0000ffff
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#define DST_WATERMARK_HIGH_GET(x) \
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(((x) & DST_WATERMARK_HIGH_MASK) >> DST_WATERMARK_HIGH_LSB)
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#define DST_WATERMARK_HIGH_SET(x) \
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(((0 | (x)) << DST_WATERMARK_HIGH_LSB) & DST_WATERMARK_HIGH_MASK)
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#define DST_WATERMARK_HIGH_RESET 0
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#define DST_WATERMARK_ADDRESS 0x0050
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static inline u32 ath10k_ce_base_address(unsigned int ce_id)
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{
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return CE0_BASE_ADDRESS + (CE1_BASE_ADDRESS - CE0_BASE_ADDRESS) * ce_id;
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}
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#define CE_WATERMARK_MASK (HOST_IS_SRC_RING_LOW_WATERMARK_MASK | \
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HOST_IS_SRC_RING_HIGH_WATERMARK_MASK | \
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HOST_IS_DST_RING_LOW_WATERMARK_MASK | \
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HOST_IS_DST_RING_HIGH_WATERMARK_MASK)
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#define CE_ERROR_MASK (MISC_IS_AXI_ERR_MASK | \
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MISC_IS_DST_ADDR_ERR_MASK | \
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MISC_IS_SRC_LEN_ERR_MASK | \
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MISC_IS_DST_MAX_LEN_VIO_MASK | \
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MISC_IS_DST_RING_OVERFLOW_MASK | \
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MISC_IS_SRC_RING_OVERFLOW_MASK)
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#define CE_SRC_RING_TO_DESC(baddr, idx) \
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(&(((struct ce_desc *)baddr)[idx]))
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#define CE_DEST_RING_TO_DESC(baddr, idx) \
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(&(((struct ce_desc *)baddr)[idx]))
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/* Ring arithmetic (modulus number of entries in ring, which is a pwr of 2). */
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#define CE_RING_DELTA(nentries_mask, fromidx, toidx) \
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(((int)(toidx)-(int)(fromidx)) & (nentries_mask))
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#define CE_RING_IDX_INCR(nentries_mask, idx) (((idx) + 1) & (nentries_mask))
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#define CE_WRAPPER_INTERRUPT_SUMMARY_HOST_MSI_LSB 8
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#define CE_WRAPPER_INTERRUPT_SUMMARY_HOST_MSI_MASK 0x0000ff00
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#define CE_WRAPPER_INTERRUPT_SUMMARY_HOST_MSI_GET(x) \
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(((x) & CE_WRAPPER_INTERRUPT_SUMMARY_HOST_MSI_MASK) >> \
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CE_WRAPPER_INTERRUPT_SUMMARY_HOST_MSI_LSB)
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#define CE_WRAPPER_INTERRUPT_SUMMARY_ADDRESS 0x0000
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#define CE_INTERRUPT_SUMMARY(ar) \
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CE_WRAPPER_INTERRUPT_SUMMARY_HOST_MSI_GET( \
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ath10k_pci_read32((ar), CE_WRAPPER_BASE_ADDRESS + \
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CE_WRAPPER_INTERRUPT_SUMMARY_ADDRESS))
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#endif /* _CE_H_ */
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