From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: intel.com, ip: 192.55.52.93, mailfrom: tien.hock.loh@intel.com) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by groups.io with SMTP; Thu, 30 May 2019 00:56:32 -0700 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 May 2019 00:56:31 -0700 X-ExtLoop1: 1 Received: from pgsmsx112-dag.png.intel.com (HELO PGSMSX112.gar.corp.intel.com) ([10.108.55.234]) by FMSMGA003.fm.intel.com with ESMTP; 30 May 2019 00:56:30 -0700 Received: from pgsmsx110.gar.corp.intel.com ([169.254.13.11]) by PGSMSX112.gar.corp.intel.com ([169.254.3.134]) with mapi id 14.03.0415.000; Thu, 30 May 2019 15:56:29 +0800 From: "Loh, Tien Hock" To: Haojian Zhuang , Leif Lindholm CC: "devel@edk2.groups.io" , "thloh85@gmail.com" , Ard Biesheuvel Subject: Re: [PATCH v2 6/7] EmbeddedPkg: Fix DwEmmc SendCommand polling Thread-Topic: [PATCH v2 6/7] EmbeddedPkg: Fix DwEmmc SendCommand polling Thread-Index: AQHVFG808YivDNA62keax2f1O0CcUKaAUIOAgAJswYCAAJPjoA== Date: Thu, 30 May 2019 07:56:28 +0000 Message-ID: References: <1558949428-190715-1-git-send-email-tien.hock.loh@intel.com> <1558949428-190715-7-git-send-email-tien.hock.loh@intel.com> <20190528180409.xqqigzdyk4e2oamt@bivouac.eciton.net> <20190530070553.GB18524@gmail.com> In-Reply-To: <20190530070553.GB18524@gmail.com> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.600.7 dlp-reaction: no-action x-ctpclassification: CTP_NT x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiNWQxYTU4OTQtMzAyMy00ODA4LWJjOGYtNzViMDdjNjM2YTg1IiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoidCtpZkNKbVZKeGxpXC9DT2NBelZ4TDJtQk9UTXk1eUNWVmNiZGpRQWtHc1wvZzRCQkhrUEtoWm90a1wvN1VEZjExeiJ9 x-originating-ip: [172.30.20.206] MIME-Version: 1.0 Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable > -----Original Message----- > From: Haojian Zhuang > Sent: Thursday, May 30, 2019 3:06 PM > To: Leif Lindholm > Cc: Loh, Tien Hock ; devel@edk2.groups.io; > thloh85@gmail.com; Ard Biesheuvel > Subject: Re: [PATCH v2 6/7] EmbeddedPkg: Fix DwEmmc SendCommand > polling >=20 > On Tue, May 28, 2019 at 07:04:09PM +0100, Leif Lindholm wrote: > > +Haojian, > > > > Haojian - since you are the original author, can you comment on the > > delays? Are these silicon bug workarounds (so we need to add a Pcd), > > or does these changes work on your platforms too? >=20 > I'm not in the loop, so I missed the patch series. >=20 > The patch series can't work on my platform for the eMMC. Although a > variable is created to identify whether it's a SD or eMMC device, it does= n't > identify the eMMC device by the right way. So the eMMC device isn't > initialized successfully on my platform. >=20 > 1. Since MMC framework could identify whether it's eMMC device or SD > device, we need to make device driver gets this kind of information from = the > MMC framework. And we need to support multiple eMMC/SD instances in > MMC framework. Yeah my bad I didn't read through the SD/MMC specs on that. Now I check the= specs and you're right, the information should be read from MMC framework. >=20 > 2. I sent a patch series to support both eMMC device and SD device before= . > https://edk2.groups.io/g/devel/message/28572 > && > https://edk2.groups.io/g/devel/message/28615 > Maybe it's missed. Could you help to review that patch series? >=20 > Best Regards > Haojian >=20 > > > > Regards, > > > > Leif > > > > On Mon, May 27, 2019 at 05:30:27PM +0800, tien.hock.loh@intel.com > wrote: > > > From: "Tien Hock, Loh" > > > > > > Change SendCommand polling mode to remove unnecessary delay, and > > > check for transfer done only when block data is to be read/write. > > > This would also increase performance slightly. > > > > > > Signed-off-by: "Tien Hock, Loh" > > > Cc: Leif Lindholm > > > Cc: Ard Biesheuvel > > > --- > > > EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c | 43 > +++++++++++++++----- > > > 1 file changed, 33 insertions(+), 10 deletions(-) > > > > > > diff --git a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c > > > b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c > > > index c6c8e04917..b57833458f 100644 > > > --- a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c > > > +++ b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c > > > @@ -286,16 +286,13 @@ SendCommand ( > > > DWEMMC_INT_RCRC | DWEMMC_INT_RE; > > > ErrMask |=3D DWEMMC_INT_DCRC | DWEMMC_INT_DRT | > DWEMMC_INT_SBE; > > > do { > > > - MicroSecondDelay(500); > > > Data =3D MmioRead32 (DWEMMC_RINTSTS); > > > - > > > - if (Data & ErrMask) { > > > - return EFI_DEVICE_ERROR; > > > - } > > > - if (Data & DWEMMC_INT_DTO) { // Transfer Done > > > - break; > > > - } > > > } while (!(Data & DWEMMC_INT_CMD_DONE)); > > > + > > > + if (Data & ErrMask) { > > > + return EFI_DEVICE_ERROR; > > > + } > > > + > > > return EFI_SUCCESS; > > > } > > > > > > @@ -550,8 +547,9 @@ DwEmmcReadBlockData ( > > > ) > > > { > > > EFI_STATUS Status; > > > - UINT32 DescPages, CountPerPage, Count; > > > + UINT32 DescPages, CountPerPage, Count, ErrMask; > > > EFI_TPL Tpl; > > > + UINTN Rintsts =3D 0; > > > > > > Tpl =3D gBS->RaiseTPL (TPL_NOTIFY); > > > > > > @@ -574,6 +572,18 @@ DwEmmcReadBlockData ( > > > DEBUG ((DEBUG_ERROR, "Failed to read data, > mDwEmmcCommand:%x, mDwEmmcArgument:%x, Status:%r\n", > mDwEmmcCommand, mDwEmmcArgument, Status)); > > > goto out; > > > } > > > + > > > + while(!((MmioRead32(DWEMMC_RINTSTS) & (DWEMMC_INT_DTO)))) > { > > > + Rintsts =3D MmioRead32 (DWEMMC_RINTSTS); } ErrMask =3D > > > + DWEMMC_INT_EBE | DWEMMC_INT_HLE | DWEMMC_INT_RTO | > > > + DWEMMC_INT_RCRC | DWEMMC_INT_RE | > DWEMMC_INT_DCRC | > > > + DWEMMC_INT_DRT | DWEMMC_INT_SBE; > > > + > > > + if (Rintsts & ErrMask) { > > > + Status =3D EFI_DEVICE_ERROR; > > > + goto out; > > > + } > > > out: > > > // Restore Tpl > > > gBS->RestoreTPL (Tpl); > > > @@ -589,8 +599,9 @@ DwEmmcWriteBlockData ( > > > ) > > > { > > > EFI_STATUS Status; > > > - UINT32 DescPages, CountPerPage, Count; > > > + UINT32 DescPages, CountPerPage, Count, ErrMask; > > > EFI_TPL Tpl; > > > + UINTN Rintsts =3D 0; > > > > > > Tpl =3D gBS->RaiseTPL (TPL_NOTIFY); > > > > > > @@ -613,6 +624,18 @@ DwEmmcWriteBlockData ( > > > DEBUG ((DEBUG_ERROR, "Failed to write data, > mDwEmmcCommand:%x, mDwEmmcArgument:%x, Status:%r\n", > mDwEmmcCommand, mDwEmmcArgument, Status)); > > > goto out; > > > } > > > + > > > + while(!((MmioRead32(DWEMMC_RINTSTS) & (DWEMMC_INT_DTO)))) > { > > > + Rintsts =3D MmioRead32 (DWEMMC_RINTSTS); } ErrMask =3D > > > + DWEMMC_INT_EBE | DWEMMC_INT_HLE | DWEMMC_INT_RTO | > > > + DWEMMC_INT_RCRC | DWEMMC_INT_RE | > DWEMMC_INT_DCRC | > > > + DWEMMC_INT_DRT | DWEMMC_INT_SBE; > > > + > > > + if (Rintsts & ErrMask) { > > > + Status =3D EFI_DEVICE_ERROR; > > > + goto out; > > > + } > > > out: > > > // Restore Tpl > > > gBS->RestoreTPL (Tpl); > > > -- > > > 2.19.0 > > >