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Tue, 20 Aug 2019 15:48:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1566316115; bh=7F/LH2tUdWDA0l6vEbe5SHjrX36hTXpn0+CGo+lYN/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AghaBy7b4blcrn6mEZhlXZe4tCn8VOAPmBSL8anyEcfEzPIIVdII3kHNoUujSPJn6 k+f3Ahv24jYJUn4Y4XDQPZQs3izJb316tRlPHK6TfN9sN18UaKLLpOtS7+sVhKwXcB ajBKn/TKkfh9aGkd92u3Cp32Ckh6wAJwhpL0cMYs= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org DF0C361A3D Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=kvalo@codeaurora.org From: Kalle Valo To: linux-wireless@vger.kernel.org Subject: [PATCH 07/49] ath11k: add ce.h Date: Tue, 20 Aug 2019 18:47:33 +0300 Message-Id: <1566316095-27507-8-git-send-email-kvalo@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1566316095-27507-1-git-send-email-kvalo@codeaurora.org> References: <1566316095-27507-1-git-send-email-kvalo@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190820_084837_250658_CA94DAC8 X-CRM114-Status: GOOD ( 13.19 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [198.145.29.96 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: ath11k@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, ath11k@lists.infradead.org MIME-Version: 1.0 Sender: "ath11k" Errors-To: ath11k-bounces+patchwork-ath11k=patchwork.kernel.org@lists.infradead.org --- drivers/net/wireless/ath/ath11k/ce.h | 178 +++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/ce.h b/drivers/net/wireless/ath/ath11k/ce.h new file mode 100644 index 000000000000..b9f8a0b4cd7e --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/ce.h @@ -0,0 +1,178 @@ +/* SPDX-License-Identifier: ISC */ +/* + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. + */ + +#ifndef ATH11K_CE_H +#define ATH11K_CE_H + +#define CE_COUNT 12 + +/* Byte swap data words */ +#define CE_ATTR_BYTE_SWAP_DATA 2 + +/* no interrupt on copy completion */ +#define CE_ATTR_DIS_INTR 8 + +/* Host software's Copy Engine configuration. */ +#ifdef __BIG_ENDIAN +#define CE_ATTR_FLAGS CE_ATTR_BYTE_SWAP_DATA +#else +#define CE_ATTR_FLAGS 0 +#endif + +/* Threshold to poll for tx completion in case of Interrupt disabled CE's */ +#define ATH11K_CE_USAGE_THRESHOLD 32 + +void ath11k_ce_byte_swap(void *mem, u32 len); + +/* + * Directions for interconnect pipe configuration. + * These definitions may be used during configuration and are shared + * between Host and Target. + * + * Pipe Directions are relative to the Host, so PIPEDIR_IN means + * "coming IN over air through Target to Host" as with a WiFi Rx operation. + * Conversely, PIPEDIR_OUT means "going OUT from Host through Target over air" + * as with a WiFi Tx operation. This is somewhat awkward for the "middle-man" + * Target since things that are "PIPEDIR_OUT" are coming IN to the Target + * over the interconnect. + */ +#define PIPEDIR_NONE 0 +#define PIPEDIR_IN 1 /* Target-->Host, WiFi Rx direction */ +#define PIPEDIR_OUT 2 /* Host->Target, WiFi Tx direction */ +#define PIPEDIR_INOUT 3 /* bidirectional */ +#define PIPEDIR_INOUT_H2H 4 /* bidirectional, host to host */ + +/* CE address/mask */ +#define CE_HOST_IE_ADDRESS 0x00A1803C +#define CE_HOST_IE_2_ADDRESS 0x00A18040 +#define CE_HOST_IE_3_ADDRESS CE_HOST_IE_ADDRESS + +#define CE_HOST_IE_3_SHIFT 0xC + +#define CE_RING_IDX_INCR(nentries_mask, idx) (((idx) + 1) & (nentries_mask)) + +#define ATH11K_CE_RX_POST_RETRY_JIFFIES 50 + +struct ath11k_base; + +/* Establish a mapping between a service/direction and a pipe. */ +struct service_to_pipe { + __le32 service_id; + __le32 pipedir; + __le32 pipenum; +}; + +/* + * Configuration information for a Copy Engine pipe. + * Passed from Host to Target during startup (one per CE). + * + * NOTE: Structure is shared between Host software and Target firmware! + */ +struct ce_pipe_config { + __le32 pipenum; + __le32 pipedir; + __le32 nentries; + __le32 nbytes_max; + __le32 flags; + __le32 reserved; +}; + +struct ce_attr { + /* CE_ATTR_* values */ + unsigned int flags; + + /* #entries in source ring - Must be a power of 2 */ + unsigned int src_nentries; + + /* + * Max source send size for this CE. + * This is also the minimum size of a destination buffer. + */ + unsigned int src_sz_max; + + /* #entries in destination ring - Must be a power of 2 */ + unsigned int dest_nentries; + + void (*recv_cb)(struct ath11k_base *, struct sk_buff *); +}; + +#define CE_DESC_RING_ALIGN 8 + +struct ath11k_ce_ring { + /* Number of entries in this ring; must be power of 2 */ + unsigned int nentries; + unsigned int nentries_mask; + + /* For dest ring, this is the next index to be processed + * by software after it was/is received into. + * + * For src ring, this is the last descriptor that was sent + * and completion processed by software. + * + * Regardless of src or dest ring, this is an invariant + * (modulo ring size): + * write index >= read index >= sw_index + */ + unsigned int sw_index; + /* cached copy */ + unsigned int write_index; + + /* Start of DMA-coherent area reserved for descriptors */ + /* Host address space */ + void *base_addr_owner_space_unaligned; + /* CE address space */ + u32 base_addr_ce_space_unaligned; + + /* Actual start of descriptors. + * Aligned to descriptor-size boundary. + * Points into reserved DMA-coherent area, above. + */ + /* Host address space */ + void *base_addr_owner_space; + + /* CE address space */ + u32 base_addr_ce_space; + + /* HAL ring id */ + u32 hal_ring_id; + + /* keep last */ + struct sk_buff *skb[0]; +}; + +struct ath11k_ce_pipe { + struct ath11k_base *ab; + u16 pipe_num; + unsigned int attr_flags; + unsigned int buf_sz; + unsigned int rx_buf_needed; + + void (*send_cb)(struct ath11k_ce_pipe *); + void (*recv_cb)(struct ath11k_base *, struct sk_buff *); + + struct tasklet_struct intr_tq; + struct ath11k_ce_ring *src_ring; + struct ath11k_ce_ring *dest_ring; + struct ath11k_ce_ring *status_ring; +}; + +struct ath11k_ce { + struct ath11k_ce_pipe ce_pipe[CE_COUNT]; + /* Protects rings of all ce pipes */ + spinlock_t ce_lock; +}; + +void ath11k_ce_cleanup_pipes(struct ath11k_base *ab); +void ath11k_ce_rx_replenish_retry(struct timer_list *t); +void ath11k_ce_per_engine_service(struct ath11k_base *ab, u16 ce_id); +int ath11k_ce_send(struct ath11k_base *ab, struct sk_buff *skb, u8 pipe_id, + u16 transfer_id); +void ath11k_ce_rx_post_buf(struct ath11k_base *ab); +int ath11k_ce_init_pipes(struct ath11k_base *ab); +int ath11k_ce_alloc_pipes(struct ath11k_base *ab); +void ath11k_ce_free_pipes(struct ath11k_base *ab); +int ath11k_ce_get_attr_flags(int ce_id); +void ath11k_ce_poll_send_completed(struct ath11k_base *ab, u8 pipe_id); +#endif