Search Linux Wireless

Re: [PATCH 5/5] qtnfmac: implement 64-bit dma support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Sergey Matyukevich <sergey.matyukevich.os@xxxxxxxxxxxxx> writes:

> Use 64-bit dma for hosts with CONFIG_ARCH_DMA_ADDR_T_64BIT enabled.
>
> Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@xxxxxxxxxxxxx>
> ---
>  .../net/wireless/quantenna/qtnfmac/pearl/pcie.c    | 70 ++++++++++++++++++----
>  .../wireless/quantenna/qtnfmac/pearl/pcie_ipc.h    | 10 ++--
>  .../quantenna/qtnfmac/pearl/pcie_regs_pearl.h      |  1 +
>  3 files changed, 65 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/net/wireless/quantenna/qtnfmac/pearl/pcie.c b/drivers/net/wireless/quantenna/qtnfmac/pearl/pcie.c
> index 2921d8069bf2..502e72b7cdcc 100644
> --- a/drivers/net/wireless/quantenna/qtnfmac/pearl/pcie.c
> +++ b/drivers/net/wireless/quantenna/qtnfmac/pearl/pcie.c
> @@ -403,10 +403,12 @@ static int alloc_bd_table(struct qtnf_pcie_bus_priv *priv)
>  	priv->rx_bd_vbase = vaddr;
>  	priv->rx_bd_pbase = paddr;
>  
> -	writel(QTN_HOST_LO32(paddr),
> -	       PCIE_HDP_TX_HOST_Q_BASE_L(priv->pcie_reg_base));
> +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
>  	writel(QTN_HOST_HI32(paddr),
>  	       PCIE_HDP_TX_HOST_Q_BASE_H(priv->pcie_reg_base));
> +#endif

Personally I detest ifdefs and try to write code like this using
IS_ENABLED():

if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
  	writel(QTN_HOST_HI32(paddr),
  	       PCIE_HDP_TX_HOST_Q_BASE_H(priv->pcie_reg_base));

But up to you which style you prefer.

-- 
Kalle Valo



[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Wireless Personal Area Network]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Hiking]     [MIPS Linux]     [ARM Linux]     [Linux RAID]

  Powered by Linux