From: Serge Semin <fancer.lancer@gmail.com>
To: Cai Huoqing <cai.huoqing@linux.dev>
Cc: "Gustavo Pimentel" <gustavo.pimentel@synopsys.com>,
"Vinod Koul" <vkoul@kernel.org>,
"Jingoo Han" <jingoohan1@gmail.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
linux-pci@vger.kernel.org
Subject: Re: [PATCH v6 1/5] dmaengine: dw-edma: Rename dw_edma_core_ops structure to dw_edma_plat_ops
Date: Mon, 13 Mar 2023 00:47:57 +0300 [thread overview]
Message-ID: <20230312214757.i2nzjgxfm3jvvrbb@mobilestation> (raw)
In-Reply-To: <20230310032342.17395-2-cai.huoqing@linux.dev>
On Fri, Mar 10, 2023 at 11:23:34AM +0800, Cai Huoqing wrote:
> From: Cai huoqing <cai.huoqing@linux.dev>
>
> Rename dw_edma_core_ops structure to dw_edma_plat_ops, the ops is platform
> specific operations: the DMA device environment configs like IRQs,
> address translation, etc.
Drop this
>
> The dw_edma_core_ops structure contains a set of the operations:
> device IRQ numbers getter, CPU/PCI address translation. Based on the
> functions semantics the structure name "dw_edma_plat_ops" looks more
> descriptive since indeed the operations are platform-specific. The
> "dw_edma_core_ops" name shall be used for a structure with the IP-core
> specific set of callbacks in order to abstract out DW eDMA and DW HDMA
> setups. Such structure will be added in one of the next commit in the
> framework of the set of changes adding the DW HDMA device support.
>
> Anyway the renaming was necessary to distinguish two types of
> the implementation callbacks:
> 1. DW eDMA/hDMA IP-core specific operations: device-specific CSR
> setups in one or another aspect of the DMA-engine initialization.
> 2. DW eDMA/hDMA platform specific operations: the DMA device
> environment configs like IRQs, address translation, etc.
>
> dw_edma_core_ops is supposed to be used for the case 1, and
> dw_edma_plat_ops - for the case 2.
Drop this
Other than that looks good.
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
-Serge(y)
>
> Signed-off-by: Cai huoqing <cai.huoqing@linux.dev>
> ---
> v5->v6:
> 1.Change the commit log to explain dw_edma_core_ops structure.
> 2.Revert the instance dw_edma_pcie_plat_ops.
>
> v5 link:
> https://lore.kernel.org/lkml/20230303124642.5519-2-cai.huoqing@linux.dev/
>
> drivers/dma/dw-edma/dw-edma-pcie.c | 4 ++--
> drivers/pci/controller/dwc/pcie-designware.c | 2 +-
> include/linux/dma/edma.h | 4 ++--
> 3 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
> index 2b40f2b44f5e..1c6043751dc9 100644
> --- a/drivers/dma/dw-edma/dw-edma-pcie.c
> +++ b/drivers/dma/dw-edma/dw-edma-pcie.c
> @@ -109,7 +109,7 @@ static u64 dw_edma_pcie_address(struct device *dev, phys_addr_t cpu_addr)
> return region.start;
> }
>
> -static const struct dw_edma_core_ops dw_edma_pcie_core_ops = {
> +static const struct dw_edma_plat_ops dw_edma_pcie_plat_ops = {
> .irq_vector = dw_edma_pcie_irq_vector,
> .pci_address = dw_edma_pcie_address,
> };
> @@ -225,7 +225,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
>
> chip->mf = vsec_data.mf;
> chip->nr_irqs = nr_irqs;
> - chip->ops = &dw_edma_pcie_core_ops;
> + chip->ops = &dw_edma_pcie_plat_ops;
>
> chip->ll_wr_cnt = vsec_data.wr_ch_cnt;
> chip->ll_rd_cnt = vsec_data.rd_ch_cnt;
> diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
> index 53a16b8b6ac2..44e90b71d429 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.c
> +++ b/drivers/pci/controller/dwc/pcie-designware.c
> @@ -828,7 +828,7 @@ static int dw_pcie_edma_irq_vector(struct device *dev, unsigned int nr)
> return platform_get_irq_byname_optional(pdev, name);
> }
>
> -static struct dw_edma_core_ops dw_pcie_edma_ops = {
> +static struct dw_edma_plat_ops dw_pcie_edma_ops = {
> .irq_vector = dw_pcie_edma_irq_vector,
> };
>
> diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
> index d2638d9259dc..ed401c965a87 100644
> --- a/include/linux/dma/edma.h
> +++ b/include/linux/dma/edma.h
> @@ -40,7 +40,7 @@ struct dw_edma_region {
> * iATU windows. That will be done by the controller
> * automatically.
> */
> -struct dw_edma_core_ops {
> +struct dw_edma_plat_ops {
> int (*irq_vector)(struct device *dev, unsigned int nr);
> u64 (*pci_address)(struct device *dev, phys_addr_t cpu_addr);
> };
> @@ -80,7 +80,7 @@ enum dw_edma_chip_flags {
> struct dw_edma_chip {
> struct device *dev;
> int nr_irqs;
> - const struct dw_edma_core_ops *ops;
> + const struct dw_edma_plat_ops *ops;
> u32 flags;
>
> void __iomem *reg_base;
> --
> 2.34.1
>
next prev parent reply other threads:[~2023-03-12 21:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-10 3:23 [PATCH v6 0/5] dmaengine: dw-edma: Add support for native HDMA Cai Huoqing
2023-03-10 3:23 ` [PATCH v6 1/5] dmaengine: dw-edma: Rename dw_edma_core_ops structure to dw_edma_plat_ops Cai Huoqing
2023-03-12 21:47 ` Serge Semin [this message]
2023-03-10 3:23 ` [PATCH v6 2/5] dmaengine: dw-edma: Create a new dw_edma_core_ops structure to abstract controller operation Cai Huoqing
2023-03-12 22:54 ` Serge Semin
2023-03-10 3:23 ` [PATCH v6 3/5] dmaengine: dw-edma: Add support for native HDMA Cai Huoqing
2023-03-12 23:11 ` Serge Semin
2023-03-13 3:52 ` Cai Huoqing
2023-03-10 3:23 ` [PATCH v6 4/5] dmaengine: dw-edma: Add HDMA DebugFS support Cai Huoqing
2023-03-10 3:50 ` Cai Huoqing
2023-03-10 3:23 ` [PATCH v6 5/5] dmaengine: dw-edma: Optimization in dw_edma_v0_core_handle_int Cai Huoqing
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