From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B8BFC33C99 for ; Fri, 15 Nov 2019 09:29:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D82122073C for ; Fri, 15 Nov 2019 09:29:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="VcLeCnFu"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="OsDCrVgG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726196AbfKOJ3h (ORCPT ); Fri, 15 Nov 2019 04:29:37 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:51650 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727073AbfKOJ3h (ORCPT ); Fri, 15 Nov 2019 04:29:37 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 62A436127B; Fri, 15 Nov 2019 09:29:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1573810175; bh=eF9YcReED50y6xRQcQT4r6LjSIxCxhIhVsoIjVyknrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VcLeCnFuqMzbwUzwdgQgO6SFF5Xqz6Fe+TCZrbT+RmR8buHAUfw8xjFt2MNlhR5bw 3DuKT04A9JNDpHVqnHHrqZrq9G5F9zBZL+Py4EJowDyvXJnowA0aP8jZZHuqkfSy/K 4f/+5ZIvwgc5URIg/cjT9HnlOfBczV+uoHTUEcos= Received: from potku.adurom.net (88-114-240-156.elisa-laajakaista.fi [88.114.240.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kvalo@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 1C2DE61180; Fri, 15 Nov 2019 09:29:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1573810170; bh=eF9YcReED50y6xRQcQT4r6LjSIxCxhIhVsoIjVyknrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OsDCrVgGa6aygBJNV/tw+fOE3orNHbJsaMno0ylJJB/N+dj2DmxgrjcGjtF54Rv2f /z4SC47nxFPdClKfmR8Qf2cyz9LP0POlKXpqiADJNiUu67sx82voPNbHps9xAp67w0 vQLJEYpFCeUrBe4IjSQLKNqpGjKy0aW+OO8xngUI= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 1C2DE61180 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 Cc: ath11k@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH v3 07/49] ath11k: add ce.h Date: Fri, 15 Nov 2019 11:28:31 +0200 Message-Id: <1573810153-29623-8-git-send-email-kvalo@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1573810153-29623-1-git-send-email-kvalo@codeaurora.org> References: <1573810153-29623-1-git-send-email-kvalo@codeaurora.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org (patches split for easier review, see the cover letter for more) Signed-off-by: Kalle Valo --- 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..6174eac84410 --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/ce.h @@ -0,0 +1,178 @@ +/* SPDX-License-Identifier: BSD-3-Clause-Clear */ +/* + * 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