netdev - Re: [PATCH net-next v3 06/12] net: wwan: t7xx: Data path HW layer

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Date:   Tue, 7 Dec 2021 13:59:17 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Ricardo Martinez <ricardo.martinez@...ux.intel.com>
Cc:     netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
        kuba@...nel.org, davem@...emloft.net, johannes@...solutions.net,
        ryazanov.s.a@...il.com, loic.poulain@...aro.org,
        m.chetan.kumar@...el.com, chandrashekar.devegowda@...el.com,
        linuxwwan@...el.com, chiranjeevi.rapolu@...ux.intel.com,
        haijun.liu@...iatek.com, amir.hanania@...el.com,
        dinesh.sharma@...el.com, eliot.lee@...el.com,
        mika.westerberg@...ux.intel.com, moises.veleta@...el.com,
        pierre-louis.bossart@...el.com, muralidharan.sethuraman@...el.com,
        Soumya.Prakash.Mishra@...el.com, sreehari.kancharla@...el.com,
        suresh.nagaraj@...el.com
Subject: Re: [PATCH net-next v3 06/12] net: wwan: t7xx: Data path HW layer

On Mon, Dec 06, 2021 at 07:47:05PM -0700, Ricardo Martinez wrote:
> From: Haijun Liu <haijun.liu@...iatek.com>
> 
> Data Path Modem AP Interface (DPMAIF) HW layer provides HW abstraction
> for the upper layer (DPMAIF HIF). It implements functions to do the HW
> configuration, TX/RX control and interrupt handling.

...

> +	ret = readx_poll_timeout_atomic(ioread32, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
> +					value, (value & ul_intr_enable) != ul_intr_enable, 0,
> +					DPMAIF_CHECK_INIT_TIMEOUT_US);
> +	if (ret)
> +		return ret;

...

> +	ret = readx_poll_timeout_atomic(ioread32, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMR0,
> +					value, (value & ul_intr_enable) != ul_intr_enable, 0,
> +					DPMAIF_CHECK_INIT_TIMEOUT_US);
> +	if (ret)
> +		return ret;

...

> +	ret = readx_poll_timeout_atomic(ioread32, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
> +					value, (value & ul_int_que_done) == ul_int_que_done, 0,
> +					DPMAIF_CHECK_TIMEOUT_US);
> +	if (ret)
> +		dev_err(dpmaif_ctrl->dev,
> +			"Could not mask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n",
> +			value);

I would recommend to add a small patch that extends iopoll.h by ioreadXX() variants.

Or as alternative just define it here at the top of the file (or in one of the
header if it's used more than in one module) so we may move it to the iopoll.h
in the future:


#define ioread32_poll_timeout_atomic(addr, val, cond, delay_us, timeout_us) \
	readx_poll_timeout_atomic(ioread32, addr, val, cond, delay_us, timeout_us)


-- 
With Best Regards,
Andy Shevchenko