linux-kernel - Re: [PATCH 1/2] remoteproc: imx_rproc: enlarge IMX7D_RPROC_MEM

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Message-ID: <20210325232328.GC1982573@xps15>
Date:   Thu, 25 Mar 2021 17:23:28 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     ohad@...ery.com, bjorn.andersson@...aro.org,
        o.rempel@...gutronix.de, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, linux-remoteproc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Fan <peng.fan@....com>
Subject: Re: [PATCH 1/2] remoteproc: imx_rproc: enlarge IMX7D_RPROC_MEM_MAX

On Thu, Mar 25, 2021 at 05:00:42PM -0600, Mathieu Poirier wrote:
> Hi Peng,
> 
> On Fri, Mar 19, 2021 at 06:47:07PM +0800, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@....com>
> > 
> > 8 is not enough when we need more, so enlarge IMX7D_RPROC_MEM_MAX to 32,
> > and also rename it to IMX_RPROC_MEM_MAX which make more sense.
> > 
> > Signed-off-by: Peng Fan <peng.fan@....com>
> > ---
> >  drivers/remoteproc/imx_rproc.c | 10 +++++-----
> >  1 file changed, 5 insertions(+), 5 deletions(-)
> > 
> > diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
> > index 6d3207ccbaef..24275429a7cc 100644
> > --- a/drivers/remoteproc/imx_rproc.c
> > +++ b/drivers/remoteproc/imx_rproc.c
> > @@ -48,7 +48,7 @@
> >  					 | IMX6SX_SW_M4C_NON_SCLR_RST \
> >  					 | IMX6SX_SW_M4C_RST)
> >  
> > -#define IMX7D_RPROC_MEM_MAX		8
> > +#define IMX_RPROC_MEM_MAX		32
> 
> The size of structure imx_rproc_att_imx7d and imx_rproc_att_imx6sx have
> not changed nor has there been an addition of new imx_rproc_att that would
> justify the change.
> 
> It seems to me you are working on something internally and this patch is in
> preparation for that.  If that is the case then please resubmit this patch with
> the rest of the code.

Reviewing the other patch in this set [1], I understand why the extension is
needed.  Without a cover letter I assume the patches were not related.  Next
time please add one so that I know exactly what is going on.  Adding a line in
the changelog that explains why it is needed, i.e for the resource table, would
also be helpful.

Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>

[1]. remoteproc: imx_rproc: support remote cores booted before Linux Kernel

> 
> Thanks,
> Mathieu 
> 
> >  
> >  /**
> >   * struct imx_rproc_mem - slim internal memory structure
> > @@ -88,7 +88,7 @@ struct imx_rproc {
> >  	struct regmap			*regmap;
> >  	struct rproc			*rproc;
> >  	const struct imx_rproc_dcfg	*dcfg;
> > -	struct imx_rproc_mem		mem[IMX7D_RPROC_MEM_MAX];
> > +	struct imx_rproc_mem		mem[IMX_RPROC_MEM_MAX];
> >  	struct clk			*clk;
> >  	struct mbox_client		cl;
> >  	struct mbox_chan		*tx_ch;
> > @@ -272,7 +272,7 @@ static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *i
> >  	if (imx_rproc_da_to_sys(priv, da, len, &sys))
> >  		return NULL;
> >  
> > -	for (i = 0; i < IMX7D_RPROC_MEM_MAX; i++) {
> > +	for (i = 0; i < IMX_RPROC_MEM_MAX; i++) {
> >  		if (sys >= priv->mem[i].sys_addr && sys + len <
> >  		    priv->mem[i].sys_addr +  priv->mem[i].size) {
> >  			unsigned int offset = sys - priv->mem[i].sys_addr;
> > @@ -425,7 +425,7 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
> >  		if (!(att->flags & ATT_OWN))
> >  			continue;
> >  
> > -		if (b >= IMX7D_RPROC_MEM_MAX)
> > +		if (b >= IMX_RPROC_MEM_MAX)
> >  			break;
> >  
> >  		priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
> > @@ -459,7 +459,7 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
> >  			return err;
> >  		}
> >  
> > -		if (b >= IMX7D_RPROC_MEM_MAX)
> > +		if (b >= IMX_RPROC_MEM_MAX)
> >  			break;
> >  
> >  		/* Not use resource version, because we might share region */
> > -- 
> > 2.30.0
> >