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Mon, 14 Jan 2019 13:16:46 +0000 (GMT) Subject: Re: Loongson 2F IDE/ATA broken with lemote2f_defconfig To: Aaro Koskinen , linux-mips@vger.kernel.org From: Bartlomiej Zolnierkiewicz Cc: Jens Axboe , linux-ide@vger.kernel.org Message-ID: <08c48218-2bc5-a100-4b01-edb08b4225c4@samsung.com> Date: Mon, 14 Jan 2019 14:16:42 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 In-Reply-To: <20190112152609.GE22416@darkstar.musicnaut.iki.fi> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmplleLIzCtJLcpLzFFi42LZduzned393TYxBle+ilqseeFgsfpuP5vF sR2PmCw6N21ldGDxOPx1IYvH5bOlHp83yQUwR3HZpKTmZJalFunbJXBlXFj5mbWghb+i9dsc tgbGH9xdjJwcEgImEjs2HWbtYuTiEBJYwSjx/vpXJgjnC6PEwiMvoDKfGSVmXFzFDNPy8t4f qMRyRolvN86zQzjvGSUWbLvPCFIlLGAvseLzbDBbRMBFYvmXSewgNpuAlcTE9lVgcWYBa4nZ i9czgdi8AnYSbbM2sYLYLAKqEj/eXQfaxsEhKhAh0X9GHaJEUOLkzCcsIGFOoPFr5zFDTDGQ OLJoDiuELS+x/e0cZpBzJAR+s0mcPf2GDeJoF4lN/1ZB2cISr45vYYewZSROT+5hgWiYzijx 5tdSKGc9o8SaM8eYIKqsJQ4fv8gKYTtKtO/oZwO5QkKAT+LGW0GIzXwSk7ZNZ4YI80p0tAlB VKtJbFi2gQ1mV9fOldBA9JB486iJbQKj4iwkr81C8s8sJP8sYGRexSieWlqcm55abJiXWq5X nJhbXJqXrpecn7uJEZg4Tv87/mkH49dLSYcYBTgYlXh4JWZbxwixJpYVV+YeYpTgYFYS4S1z sokR4k1JrKxKLcqPLyrNSS0+xCjNwaIkzlvN8CBaSCA9sSQ1OzW1ILUIJsvEwSnVwBh8w0Ho 9olj5uvPefvOP/qSbWI1u0jG7OOxr0XCPu7NZHM92cY95UZC/AzjtZv+M3fvOeQxK2VX+Pe7 1jdnTr5teKItpEQ/L1vibqXmz4Pxqdl3z8xlCJ6wrufZ24MKTovK/y68vzq7gdFnf39HrPGU rVrJYulaUnbFRSvX87PY/Z8y+fIkqclKLMUZiYZazEXFiQCYj+7IGAMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupkkeLIzCtJLcpLzFFi42I5/e/4Xd193TYxBs/+KluseeFgsfpuP5vF sR2PmCw6N21ldGDxOPx1IYvH5bOlHp83yQUwR+nZFOWXlqQqZOQXl9gqRRtaGOkZWlroGZlY 6hkam8daGZkq6dvZpKTmZJalFunbJehlXFj5mbWghb+i9dsctgbGH9xdjJwcEgImEi/v/WHt YuTiEBJYyijxtO0oWxcjB1BCRuL4+jKIGmGJP9e62CBq3jJKXF+1gB0kISxgL7Hi82xGEFtE wEVi+ZdJ7BBFxxklJnYcYQJJsAlYSUxsXwVWxCxgLTF78XqwOK+AnUTbrE2sIDaLgKrEj3fX mUFsUYEIiVsPO1ggagQlTs58wgJyECfQsrXzmCHG6EnsuP6LFcKWl9j+dg7zBEbBWUg6ZiEp m4WkbAEj8ypGkdTS4tz03GJDveLE3OLSvHS95PzcTYzAaNh27OfmHYyXNgYfYhTgYFTi4ZWY bR0jxJpYVlyZe4hRgoNZSYS3zMkmRog3JbGyKrUoP76oNCe1+BCjKdAPE5mlRJPzgZGaVxJv aGpobmFpaG5sbmxmoSTOe96gMkpIID2xJDU7NbUgtQimj4mDU6qBMWbd1kmtKxbUxUYlb78e qvz2fvQthtPh8z4eqixkOHGCt+Gzg1jkpstO+5/ncjuExQlHROyoWbDCJv/3tNbLTMnMm8W0 Y3wOLF4p2lC/wuso90uWlVM23f64YlGZu1bOInet+PmCk6J2TBG8999n4QzJkIe337nGzmIS +M1eomShsP5Sxb5b+5VYijMSDbWYi4oTAYdQEPOcAgAA X-CMS-MailID: 20190114131646eucas1p163e134a42a757c55aa011b11f54fc344 X-Msg-Generator: CA X-RootMTR: 20190112152659epcas5p3953165de5118dba017c94b164dd725a2 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20190112152659epcas5p3953165de5118dba017c94b164dd725a2 References: <20190106124607.GK27785@darkstar.musicnaut.iki.fi> <20190112152609.GE22416@darkstar.musicnaut.iki.fi> Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Hi, On 01/12/2019 04:26 PM, Aaro Koskinen wrote: > Hi, > > On Sun, Jan 06, 2019 at 02:46:07PM +0200, Aaro Koskinen wrote: >> Commit 7ff7a5b1bfff ("MIPS: lemote2f_defconfig: Convert to use libata >> PATA drivers") switched from IDE to libata PATA on Loongson 2F, but >> neither PATA_AMD or PATA_CS5536 work well on this platform compared >> to the AMD74XX IDE driver. Sorry about that. >> During the ATA init/probe there is interrupt storm from irq 14, and >> majority of system boots end up with "nobody cared... IRQ disabled". >> So the result is a very slow disk access. >> >> It seems that the interrupt gets crazy after the port freeze done early >> during the init, and for whatever reason it cannot be cleared. >> >> With the below workaround I was able to boot the system normally. I >> guess that rather than going back to old IDE driver, we should just try >> to make pata_cs5536 work (and forget PATA AMD on this board)...? > > Hmm, even with this hack I get ~500 spurious IRQs during the boot. > > Also compared to old IDE, there's 33 vs 100 speed difference: > > [ 3.324000] ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x4ce0 irq 14 > [ 3.584000] ata1.00: ATA-8: WDC WD1600BEVS-00VAT0, 11.01A11, max UDMA/133 > [ 3.588000] ata1.00: 312581808 sectors, multi 16: LBA48 > [ 3.592000] ata1.00: limited to UDMA/33 due to 40-wire cable > > [ 4.540000] Probing IDE interface ide0... > [ 4.992000] hda: WDC WD1600BEVS-00VAT0, ATA DISK drive > [ 5.716000] hda: host max PIO5 wanted PIO255(auto-tune) selected PIO4 > [ 5.716000] hda: UDMA/100 mode selected Can you try booting with "libata.force=1:80c" (and if that doesn't work with "libata.force=1:short40c") and also provide full dmesg-s for working (ide) and not working (libata) kernels. Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics