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[2620:137:e000::1:20]) by mx.google.com with ESMTP id u4-20020a056402110400b00501cf1795cdsi9436673edv.112.2023.03.22.20.51.14; Wed, 22 Mar 2023 20:51:38 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linux.dev header.s=key1 header.b=RIJ97Z2G; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linux.dev Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230314AbjCWDuc (ORCPT + 99 others); Wed, 22 Mar 2023 23:50:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230248AbjCWDuZ (ORCPT ); Wed, 22 Mar 2023 23:50:25 -0400 Received: from out-22.mta0.migadu.com (out-22.mta0.migadu.com [91.218.175.22]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7C162DE64 for ; Wed, 22 Mar 2023 20:50:07 -0700 (PDT) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1679543405; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=GTZQTCivp9g4e/up2amKHejHWBtXK1/3Iqu3nkJ63O4=; b=RIJ97Z2GkYKTbETQmzp4hp2t4UBfeT/bZym4V5rJ8fdrn4Oq5QkJCNK1TmLdaysAIEtC0r 6lD9yPDEtBvVpYW87P/84CxkNnfy2W50gcig0BvbwZ13SuYA7Ae2YYZC9sWozeqgwsgIqw jVVDADQRcbjD8qTWIt8dbf9o3w5ClZE= From: Cai Huoqing To: fancer.lancer@gmail.com Cc: Cai huoqing , Gustavo Pimentel , Vinod Koul , Jingoo Han , Lorenzo Pieralisi , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v8 2/4] dmaengine: dw-edma: Create a new dw_edma_core_ops structure to abstract controller operation Date: Thu, 23 Mar 2023 11:49:39 +0800 Message-Id: <20230323034944.78357-3-cai.huoqing@linux.dev> In-Reply-To: <20230323034944.78357-1-cai.huoqing@linux.dev> References: <20230323034944.78357-1-cai.huoqing@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Cai huoqing The structure dw_edma_core_ops has a set of the pointers abstracting out the DW eDMA vX and DW HDMA Native controllers. And use dw_edma_v0_core_register to set up operation. Signed-off-by: Cai huoqing Reviewed-by: Serge Semin --- drivers/dma/dw-edma/dw-edma-core.c | 82 ++++++++------------------ drivers/dma/dw-edma/dw-edma-core.h | 58 ++++++++++++++++++ drivers/dma/dw-edma/dw-edma-v0-core.c | 85 +++++++++++++++++++++++---- drivers/dma/dw-edma/dw-edma-v0-core.h | 14 +---- 4 files changed, 157 insertions(+), 82 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index 1906a836f0aa..f916f0d84bd6 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -183,6 +183,7 @@ static void vchan_free_desc(struct virt_dma_desc *vdesc) static void dw_edma_start_transfer(struct dw_edma_chan *chan) { + struct dw_edma *dw = chan->dw; struct dw_edma_chunk *child; struct dw_edma_desc *desc; struct virt_dma_desc *vd; @@ -200,7 +201,7 @@ static void dw_edma_start_transfer(struct dw_edma_chan *chan) if (!child) return; - dw_edma_v0_core_start(child, !desc->xfer_sz); + dw_edma_core_start(dw, child, !desc->xfer_sz); desc->xfer_sz += child->ll_region.sz; dw_edma_free_burst(child); list_del(&child->list); @@ -285,7 +286,7 @@ static int dw_edma_device_terminate_all(struct dma_chan *dchan) chan->configured = false; } else if (chan->status == EDMA_ST_IDLE) { chan->configured = false; - } else if (dw_edma_v0_core_ch_status(chan) == DMA_COMPLETE) { + } else if (dw_edma_core_ch_status(chan) == DMA_COMPLETE) { /* * The channel is in a false BUSY state, probably didn't * receive or lost an interrupt @@ -594,8 +595,6 @@ static void dw_edma_done_interrupt(struct dw_edma_chan *chan) struct virt_dma_desc *vd; unsigned long flags; - dw_edma_v0_core_clear_done_int(chan); - spin_lock_irqsave(&chan->vc.lock, flags); vd = vchan_next_desc(&chan->vc); if (vd) { @@ -636,8 +635,6 @@ static void dw_edma_abort_interrupt(struct dw_edma_chan *chan) struct virt_dma_desc *vd; unsigned long flags; - dw_edma_v0_core_clear_abort_int(chan); - spin_lock_irqsave(&chan->vc.lock, flags); vd = vchan_next_desc(&chan->vc); if (vd) { @@ -649,63 +646,32 @@ static void dw_edma_abort_interrupt(struct dw_edma_chan *chan) chan->status = EDMA_ST_IDLE; } -static irqreturn_t dw_edma_interrupt(int irq, void *data, bool write) +static inline irqreturn_t dw_edma_interrupt_write(int irq, void *data) { struct dw_edma_irq *dw_irq = data; - struct dw_edma *dw = dw_irq->dw; - unsigned long total, pos, val; - unsigned long off; - u32 mask; - - if (write) { - total = dw->wr_ch_cnt; - off = 0; - mask = dw_irq->wr_mask; - } else { - total = dw->rd_ch_cnt; - off = dw->wr_ch_cnt; - mask = dw_irq->rd_mask; - } - - val = dw_edma_v0_core_status_done_int(dw, write ? - EDMA_DIR_WRITE : - EDMA_DIR_READ); - val &= mask; - for_each_set_bit(pos, &val, total) { - struct dw_edma_chan *chan = &dw->chan[pos + off]; - - dw_edma_done_interrupt(chan); - } - - val = dw_edma_v0_core_status_abort_int(dw, write ? - EDMA_DIR_WRITE : - EDMA_DIR_READ); - val &= mask; - for_each_set_bit(pos, &val, total) { - struct dw_edma_chan *chan = &dw->chan[pos + off]; - - dw_edma_abort_interrupt(chan); - } - - return IRQ_HANDLED; -} -static inline irqreturn_t dw_edma_interrupt_write(int irq, void *data) -{ - return dw_edma_interrupt(irq, data, true); + return dw_edma_core_handle_int(dw_irq, EDMA_DIR_WRITE, + dw_edma_done_interrupt, + dw_edma_abort_interrupt); } static inline irqreturn_t dw_edma_interrupt_read(int irq, void *data) { - return dw_edma_interrupt(irq, data, false); + struct dw_edma_irq *dw_irq = data; + + return dw_edma_core_handle_int(dw_irq, EDMA_DIR_READ, + dw_edma_done_interrupt, + dw_edma_abort_interrupt); } static irqreturn_t dw_edma_interrupt_common(int irq, void *data) { - dw_edma_interrupt(irq, data, true); - dw_edma_interrupt(irq, data, false); + irqreturn_t ret = IRQ_NONE; + + ret |= dw_edma_interrupt_write(irq, data); + ret |= dw_edma_interrupt_read(irq, data); - return IRQ_HANDLED; + return ret; } static int dw_edma_alloc_chan_resources(struct dma_chan *dchan) @@ -806,7 +772,7 @@ static int dw_edma_channel_setup(struct dw_edma *dw, u32 wr_alloc, u32 rd_alloc) vchan_init(&chan->vc, dma); - dw_edma_v0_core_device_config(chan); + dw_edma_core_ch_config(chan); } /* Set DMA channel capabilities */ @@ -951,14 +917,16 @@ int dw_edma_probe(struct dw_edma_chip *chip) dw->chip = chip; + dw_edma_v0_core_register(dw); + raw_spin_lock_init(&dw->lock); dw->wr_ch_cnt = min_t(u16, chip->ll_wr_cnt, - dw_edma_v0_core_ch_count(dw, EDMA_DIR_WRITE)); + dw_edma_core_ch_count(dw, EDMA_DIR_WRITE)); dw->wr_ch_cnt = min_t(u16, dw->wr_ch_cnt, EDMA_MAX_WR_CH); dw->rd_ch_cnt = min_t(u16, chip->ll_rd_cnt, - dw_edma_v0_core_ch_count(dw, EDMA_DIR_READ)); + dw_edma_core_ch_count(dw, EDMA_DIR_READ)); dw->rd_ch_cnt = min_t(u16, dw->rd_ch_cnt, EDMA_MAX_RD_CH); if (!dw->wr_ch_cnt && !dw->rd_ch_cnt) @@ -977,7 +945,7 @@ int dw_edma_probe(struct dw_edma_chip *chip) dev_name(chip->dev)); /* Disable eDMA, only to establish the ideal initial conditions */ - dw_edma_v0_core_off(dw); + dw_edma_core_off(dw); /* Request IRQs */ err = dw_edma_irq_request(dw, &wr_alloc, &rd_alloc); @@ -990,7 +958,7 @@ int dw_edma_probe(struct dw_edma_chip *chip) goto err_irq_free; /* Turn debugfs on */ - dw_edma_v0_core_debugfs_on(dw); + dw_edma_core_debugfs_on(dw); chip->dw = dw; @@ -1016,7 +984,7 @@ int dw_edma_remove(struct dw_edma_chip *chip) return -ENODEV; /* Disable eDMA */ - dw_edma_v0_core_off(dw); + dw_edma_core_off(dw); /* Free irqs */ for (i = (dw->nr_irqs - 1); i >= 0; i--) diff --git a/drivers/dma/dw-edma/dw-edma-core.h b/drivers/dma/dw-edma/dw-edma-core.h index 0ab2b6dba880..71894b9e0b15 100644 --- a/drivers/dma/dw-edma/dw-edma-core.h +++ b/drivers/dma/dw-edma/dw-edma-core.h @@ -111,6 +111,21 @@ struct dw_edma { raw_spinlock_t lock; /* Only for legacy */ struct dw_edma_chip *chip; + + const struct dw_edma_core_ops *core; +}; + +typedef void (*dw_edma_handler_t)(struct dw_edma_chan *); + +struct dw_edma_core_ops { + void (*off)(struct dw_edma *dw); + u16 (*ch_count)(struct dw_edma *dw, enum dw_edma_dir dir); + enum dma_status (*ch_status)(struct dw_edma_chan *chan); + irqreturn_t (*handle_int)(struct dw_edma_irq *dw_irq, enum dw_edma_dir dir, + dw_edma_handler_t done, dw_edma_handler_t abort); + void (*start)(struct dw_edma_chunk *chunk, bool first); + void (*ch_config)(struct dw_edma_chan *chan); + void (*debugfs_on)(struct dw_edma *dw); }; struct dw_edma_sg { @@ -148,4 +163,47 @@ struct dw_edma_chan *dchan2dw_edma_chan(struct dma_chan *dchan) return vc2dw_edma_chan(to_virt_chan(dchan)); } +static inline +void dw_edma_core_off(struct dw_edma *dw) +{ + dw->core->off(dw); +} + +static inline +u16 dw_edma_core_ch_count(struct dw_edma *dw, enum dw_edma_dir dir) +{ + return dw->core->ch_count(dw, dir); +} + +static inline +enum dma_status dw_edma_core_ch_status(struct dw_edma_chan *chan) +{ + return chan->dw->core->ch_status(chan); +} + +static inline irqreturn_t +dw_edma_core_handle_int(struct dw_edma_irq *dw_irq, enum dw_edma_dir dir, + dw_edma_handler_t done, dw_edma_handler_t abort) +{ + return dw_irq->dw->core->handle_int(dw_irq, dir, done, abort); +} + +static inline +void dw_edma_core_start(struct dw_edma *dw, struct dw_edma_chunk *chunk, bool first) +{ + dw->core->start(chunk, first); +} + +static inline +void dw_edma_core_ch_config(struct dw_edma_chan *chan) +{ + chan->dw->core->ch_config(chan); +} + +static inline +void dw_edma_core_debugfs_on(struct dw_edma *dw) +{ + dw->core->debugfs_on(dw); +} + #endif /* _DW_EDMA_CORE_H */ diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.c b/drivers/dma/dw-edma/dw-edma-v0-core.c index 72e79a0c0a4e..16c48197d3c6 100644 --- a/drivers/dma/dw-edma/dw-edma-v0-core.c +++ b/drivers/dma/dw-edma/dw-edma-v0-core.c @@ -7,7 +7,7 @@ */ #include - +#include #include #include "dw-edma-core.h" @@ -216,7 +216,7 @@ static inline u64 readq_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch, readq_ch(dw, dir, ch, &(__dw_ch_regs(dw, dir, ch)->name)) /* eDMA management callbacks */ -void dw_edma_v0_core_off(struct dw_edma *dw) +static void dw_edma_v0_core_off(struct dw_edma *dw) { SET_BOTH_32(dw, int_mask, EDMA_V0_DONE_INT_MASK | EDMA_V0_ABORT_INT_MASK); @@ -225,7 +225,7 @@ void dw_edma_v0_core_off(struct dw_edma *dw) SET_BOTH_32(dw, engine_en, 0); } -u16 dw_edma_v0_core_ch_count(struct dw_edma *dw, enum dw_edma_dir dir) +static u16 dw_edma_v0_core_ch_count(struct dw_edma *dw, enum dw_edma_dir dir) { u32 num_ch; @@ -242,7 +242,7 @@ u16 dw_edma_v0_core_ch_count(struct dw_edma *dw, enum dw_edma_dir dir) return (u16)num_ch; } -enum dma_status dw_edma_v0_core_ch_status(struct dw_edma_chan *chan) +static enum dma_status dw_edma_v0_core_ch_status(struct dw_edma_chan *chan) { struct dw_edma *dw = chan->dw; u32 tmp; @@ -258,7 +258,7 @@ enum dma_status dw_edma_v0_core_ch_status(struct dw_edma_chan *chan) return DMA_ERROR; } -void dw_edma_v0_core_clear_done_int(struct dw_edma_chan *chan) +static void dw_edma_v0_core_clear_done_int(struct dw_edma_chan *chan) { struct dw_edma *dw = chan->dw; @@ -266,7 +266,7 @@ void dw_edma_v0_core_clear_done_int(struct dw_edma_chan *chan) FIELD_PREP(EDMA_V0_DONE_INT_MASK, BIT(chan->id))); } -void dw_edma_v0_core_clear_abort_int(struct dw_edma_chan *chan) +static void dw_edma_v0_core_clear_abort_int(struct dw_edma_chan *chan) { struct dw_edma *dw = chan->dw; @@ -274,18 +274,64 @@ void dw_edma_v0_core_clear_abort_int(struct dw_edma_chan *chan) FIELD_PREP(EDMA_V0_ABORT_INT_MASK, BIT(chan->id))); } -u32 dw_edma_v0_core_status_done_int(struct dw_edma *dw, enum dw_edma_dir dir) +static u32 dw_edma_v0_core_status_done_int(struct dw_edma *dw, enum dw_edma_dir dir) { return FIELD_GET(EDMA_V0_DONE_INT_MASK, GET_RW_32(dw, dir, int_status)); } -u32 dw_edma_v0_core_status_abort_int(struct dw_edma *dw, enum dw_edma_dir dir) +static u32 dw_edma_v0_core_status_abort_int(struct dw_edma *dw, enum dw_edma_dir dir) { return FIELD_GET(EDMA_V0_ABORT_INT_MASK, GET_RW_32(dw, dir, int_status)); } +static irqreturn_t +dw_edma_v0_core_handle_int(struct dw_edma_irq *dw_irq, enum dw_edma_dir dir, + dw_edma_handler_t done, dw_edma_handler_t abort) +{ + struct dw_edma *dw = dw_irq->dw; + unsigned long total, pos, val; + irqreturn_t ret = IRQ_NONE; + struct dw_edma_chan *chan; + unsigned long off; + u32 mask; + + if (dir == EDMA_DIR_WRITE) { + total = dw->wr_ch_cnt; + off = 0; + mask = dw_irq->wr_mask; + } else { + total = dw->rd_ch_cnt; + off = dw->wr_ch_cnt; + mask = dw_irq->rd_mask; + } + + val = dw_edma_v0_core_status_done_int(dw, dir); + val &= mask; + for_each_set_bit(pos, &val, total) { + chan = &dw->chan[pos + off]; + + dw_edma_v0_core_clear_done_int(chan); + done(chan); + + ret = IRQ_HANDLED; + } + + val = dw_edma_v0_core_status_abort_int(dw, dir); + val &= mask; + for_each_set_bit(pos, &val, total) { + chan = &dw->chan[pos + off]; + + dw_edma_v0_core_clear_abort_int(chan); + abort(chan); + + ret = IRQ_HANDLED; + } + + return ret; +} + static void dw_edma_v0_write_ll_data(struct dw_edma_chunk *chunk, int i, u32 control, u32 size, u64 sar, u64 dar) { @@ -356,7 +402,7 @@ static void dw_edma_v0_core_write_chunk(struct dw_edma_chunk *chunk) dw_edma_v0_write_ll_link(chunk, i, control, chunk->ll_region.paddr); } -void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first) +static void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first) { struct dw_edma_chan *chan = chunk->chan; struct dw_edma *dw = chan->dw; @@ -427,7 +473,7 @@ void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first) FIELD_PREP(EDMA_V0_DOORBELL_CH_MASK, chan->id)); } -int dw_edma_v0_core_device_config(struct dw_edma_chan *chan) +static void dw_edma_v0_core_ch_config(struct dw_edma_chan *chan) { struct dw_edma *dw = chan->dw; u32 tmp = 0; @@ -494,12 +540,25 @@ int dw_edma_v0_core_device_config(struct dw_edma_chan *chan) SET_RW_32(dw, chan->dir, ch67_imwr_data, tmp); break; } - - return 0; } /* eDMA debugfs callbacks */ -void dw_edma_v0_core_debugfs_on(struct dw_edma *dw) +static void dw_edma_v0_core_debugfs_on(struct dw_edma *dw) { dw_edma_v0_debugfs_on(dw); } + +static const struct dw_edma_core_ops dw_edma_v0_core = { + .off = dw_edma_v0_core_off, + .ch_count = dw_edma_v0_core_ch_count, + .ch_status = dw_edma_v0_core_ch_status, + .handle_int = dw_edma_v0_core_handle_int, + .start = dw_edma_v0_core_start, + .ch_config = dw_edma_v0_core_ch_config, + .debugfs_on = dw_edma_v0_core_debugfs_on, +}; + +void dw_edma_v0_core_register(struct dw_edma *dw) +{ + dw->core = &dw_edma_v0_core; +} diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.h b/drivers/dma/dw-edma/dw-edma-v0-core.h index ab96a1f48080..04a882222f99 100644 --- a/drivers/dma/dw-edma/dw-edma-v0-core.h +++ b/drivers/dma/dw-edma/dw-edma-v0-core.h @@ -11,17 +11,7 @@ #include -/* eDMA management callbacks */ -void dw_edma_v0_core_off(struct dw_edma *chan); -u16 dw_edma_v0_core_ch_count(struct dw_edma *chan, enum dw_edma_dir dir); -enum dma_status dw_edma_v0_core_ch_status(struct dw_edma_chan *chan); -void dw_edma_v0_core_clear_done_int(struct dw_edma_chan *chan); -void dw_edma_v0_core_clear_abort_int(struct dw_edma_chan *chan); -u32 dw_edma_v0_core_status_done_int(struct dw_edma *chan, enum dw_edma_dir dir); -u32 dw_edma_v0_core_status_abort_int(struct dw_edma *chan, enum dw_edma_dir dir); -void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first); -int dw_edma_v0_core_device_config(struct dw_edma_chan *chan); -/* eDMA debug fs callbacks */ -void dw_edma_v0_core_debugfs_on(struct dw_edma *dw); +/* eDMA core register */ +void dw_edma_v0_core_register(struct dw_edma *dw); #endif /* _DW_EDMA_V0_CORE_H */ -- 2.34.1