> -----Original Message-----
> From: Wood Scott-B07421
> Sent: Wednesday, June 04, 2014 10:12 PM
> To: Bhushan Bharat-R65777
> Cc: Greg Kroah-Hartman; linuxppc-dev@lists.ozlabs.org; linux-
> ker...@vger.kernel.org
> Subject: Re: [RESEND PATCH] memory: Freescale CoreNet Coherency Fabric error
> reporting driver
>
> On Wed, 2014-06-04 at 03:17 -0500, Bhushan Bharat-R65777 wrote:
> > > +struct ccf_err_regs {
> > > + u32 errdet; /* 0x00 Error Detect Register */
> > > + /* 0x04 Error Enable (ccf1)/Disable (ccf2) Register */
> > > + u32 errdis;
> > > + /* 0x08 Error Interrupt Enable Register (ccf2 only) */
> > > + u32 errinten;
> > > + u32 cecar; /* 0x0c Error Capture Attribute Register */
> > > + u32 cecadrh; /* 0x10 Error Capture Address High */
> >
> > s/cecadrh/cecaddrh/g
> > This way we will be consistent with Reference manual.
>
> It's "cecadrh" in ccf1 and "cecaddrh" in ccf2. I suppose I should use the
> latter since "errdet/errdis/errinten" are the ccf2 names.
>
> > > + u32 cecadrl; /* 0x14 Error Capture Address Low */
> >
> > s/cecadrl/cecaddrl/g
> >
> > > + u32 cecar2; /* 0x18 Error Capture Attribute Register 2 */
> > > +};
> > > +
> > > +/* LAE/CV also valid for errdis and errinten */
> > > +#define ERRDET_LAE (1 << 0) /* Local Access Error */
> > > +#define ERRDET_CV (1 << 1) /* Coherency Violation */
> > > +#define ERRDET_CTYPE_SHIFT 26 /* Capture Type (ccf2 only) */
> > > +#define ERRDET_CTYPE_MASK (0x3f << ERRDET_CTYPE_SHIFT)
> >
> > Should not this be (0x1f << ERRDET_CTYPE_SHIFT)
>
> Yes, thanks for catching that.
>
> > > +#define ERRDET_CAP (1 << 31) /* Capture Valid (ccf2 only)
> > > */
> > > +
> > > +#define CECAR_VAL (1 << 0) /* Valid (ccf1 only) */
> > > +#define CECAR_UVT (1 << 15) /* Unavailable target ID
> > > (ccf1) */
> > > +#define CECAR_SRCID_SHIFT_CCF1 24
> > > +#define CECAR_SRCID_MASK_CCF1 (0xff << CECAR_SRCID_SHIFT_CCF1)
> > > +#define CECAR_SRCID_SHIFT_CCF2 18
> > > +#define CECAR_SRCID_MASK_CCF2 (0xff << CECAR_SRCID_SHIFT_CCF2)
> > > +
> > > +#define CECADRH_ADDRH 0xf
> >
> > On ccf2 this id 0xff.
>
> OK. I think we can get away with using 0xff on both.
>
> > > +static int ccf_remove(struct platform_device *pdev) {
> > > + struct ccf_private *ccf = dev_get_drvdata(&pdev->dev);
> > > +
> > > + switch (ccf->info->version) {
> > > + case CCF1:
> > > + iowrite32be(0, &ccf->err_regs->errdis);
> > > + break;
> > > +
> > > + case CCF2:
> > > + iowrite32be(0, &ccf->err_regs->errinten);
> >
> > Do you think it is same to disable detection bits in ccf->err_regs->errdis?
>
> Disabling the interrupt is what we're aiming for here, but ccf1 doesn't
> provide
> a way to do that separate from disabling detection.
What I wanted to say that do we also need to disable detection (set ERRDET_LAE
| ERRDET_CV bits in errdis) apart from clearing errinten on ccf2 ?
Thanks
-Bharat
>
> -Scott
>
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