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Date: Thu, 8 Dec 2016 09:50:50 +0100
From: Alexandre Torgue <alexandre.torgue@...com>
To: Niklas Cassel <niklas.cassel@...s.com>,
Giuseppe Cavallaro <peppe.cavallaro@...com>
CC: Niklas Cassel <niklass@...s.com>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/6] net: stmmac: simplify the common DMA init API
Hi Niklas,
On 12/07/2016 03:20 PM, Niklas Cassel wrote:
> From: Niklas Cassel <niklas.cassel@...s.com>
>
> Use struct stmmac_dma_cfg *dma_cfg as an argument rather
> than using all the struct members as individual arguments.
>
> Signed-off-by: Niklas Cassel <niklas.cassel@...s.com>
Thanks for this patch. You can add my Acked-by.
Regards
Alex
> ---
> drivers/net/ethernet/stmicro/stmmac/common.h | 4 ++--
> drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c | 13 +++++++------
> drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c | 7 ++++---
> drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 14 ++++++++------
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +-----
> 5 files changed, 22 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
> index 3ced2e1703c1..b13a144f72ad 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/common.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
> @@ -412,8 +412,8 @@ extern const struct stmmac_desc_ops ndesc_ops;
> struct stmmac_dma_ops {
> /* DMA core initialization */
> int (*reset)(void __iomem *ioaddr);
> - void (*init)(void __iomem *ioaddr, int pbl, int fb, int mb,
> - int aal, u32 dma_tx, u32 dma_rx, int atds);
> + void (*init)(void __iomem *ioaddr, struct stmmac_dma_cfg *dma_cfg,
> + u32 dma_tx, u32 dma_rx, int atds);
> /* Configure the AXI Bus Mode Register */
> void (*axi)(void __iomem *ioaddr, struct stmmac_axi *axi);
> /* Dump DMA registers */
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
> index f35385266fbf..318ae9f10104 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
> @@ -84,8 +84,9 @@ static void dwmac1000_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
> writel(value, ioaddr + DMA_AXI_BUS_MODE);
> }
>
> -static void dwmac1000_dma_init(void __iomem *ioaddr, int pbl, int fb, int mb,
> - int aal, u32 dma_tx, u32 dma_rx, int atds)
> +static void dwmac1000_dma_init(void __iomem *ioaddr,
> + struct stmmac_dma_cfg *dma_cfg,
> + u32 dma_tx, u32 dma_rx, int atds)
> {
> u32 value = readl(ioaddr + DMA_BUS_MODE);
>
> @@ -101,20 +102,20 @@ static void dwmac1000_dma_init(void __iomem *ioaddr, int pbl, int fb, int mb,
> */
> value |= DMA_BUS_MODE_MAXPBL;
> value &= ~DMA_BUS_MODE_PBL_MASK;
> - value |= (pbl << DMA_BUS_MODE_PBL_SHIFT);
> + value |= (dma_cfg->pbl << DMA_BUS_MODE_PBL_SHIFT);
>
> /* Set the Fixed burst mode */
> - if (fb)
> + if (dma_cfg->fixed_burst)
> value |= DMA_BUS_MODE_FB;
>
> /* Mixed Burst has no effect when fb is set */
> - if (mb)
> + if (dma_cfg->mixed_burst)
> value |= DMA_BUS_MODE_MB;
>
> if (atds)
> value |= DMA_BUS_MODE_ATDS;
>
> - if (aal)
> + if (dma_cfg->aal)
> value |= DMA_BUS_MODE_AAL;
>
> writel(value, ioaddr + DMA_BUS_MODE);
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
> index 61f54c99a7de..e5664da382f3 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
> @@ -32,11 +32,12 @@
> #include "dwmac100.h"
> #include "dwmac_dma.h"
>
> -static void dwmac100_dma_init(void __iomem *ioaddr, int pbl, int fb, int mb,
> - int aal, u32 dma_tx, u32 dma_rx, int atds)
> +static void dwmac100_dma_init(void __iomem *ioaddr,
> + struct stmmac_dma_cfg *dma_cfg,
> + u32 dma_tx, u32 dma_rx, int atds)
> {
> /* Enable Application Access by writing to DMA CSR0 */
> - writel(DMA_BUS_MODE_DEFAULT | (pbl << DMA_BUS_MODE_PBL_SHIFT),
> + writel(DMA_BUS_MODE_DEFAULT | (dma_cfg->pbl << DMA_BUS_MODE_PBL_SHIFT),
> ioaddr + DMA_BUS_MODE);
>
> /* Mask interrupts by writing to CSR7 */
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
> index e81b6e565c29..7d82a3464097 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
> @@ -99,27 +99,29 @@ static void dwmac4_dma_init_channel(void __iomem *ioaddr, int pbl,
> writel(dma_rx_phy, ioaddr + DMA_CHAN_RX_BASE_ADDR(channel));
> }
>
> -static void dwmac4_dma_init(void __iomem *ioaddr, int pbl, int fb, int mb,
> - int aal, u32 dma_tx, u32 dma_rx, int atds)
> +static void dwmac4_dma_init(void __iomem *ioaddr,
> + struct stmmac_dma_cfg *dma_cfg,
> + u32 dma_tx, u32 dma_rx, int atds)
> {
> u32 value = readl(ioaddr + DMA_SYS_BUS_MODE);
> int i;
>
> /* Set the Fixed burst mode */
> - if (fb)
> + if (dma_cfg->fixed_burst)
> value |= DMA_SYS_BUS_FB;
>
> /* Mixed Burst has no effect when fb is set */
> - if (mb)
> + if (dma_cfg->mixed_burst)
> value |= DMA_SYS_BUS_MB;
>
> - if (aal)
> + if (dma_cfg->aal)
> value |= DMA_SYS_BUS_AAL;
>
> writel(value, ioaddr + DMA_SYS_BUS_MODE);
>
> for (i = 0; i < DMA_CHANNEL_NB_MAX; i++)
> - dwmac4_dma_init_channel(ioaddr, pbl, dma_tx, dma_rx, i);
> + dwmac4_dma_init_channel(ioaddr, dma_cfg->pbl,
> + dma_tx, dma_rx, i);
> }
>
> static void _dwmac4_dump_dma_regs(void __iomem *ioaddr, u32 channel)
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 14366800e5e6..b1e42ddf0370 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -1595,11 +1595,7 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
> return ret;
> }
>
> - priv->hw->dma->init(priv->ioaddr,
> - priv->plat->dma_cfg->pbl,
> - priv->plat->dma_cfg->fixed_burst,
> - priv->plat->dma_cfg->mixed_burst,
> - priv->plat->dma_cfg->aal,
> + priv->hw->dma->init(priv->ioaddr, priv->plat->dma_cfg,
> priv->dma_tx_phy, priv->dma_rx_phy, atds);
>
> if (priv->synopsys_id >= DWMAC_CORE_4_00) {
>
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