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Message-ID: <20120814150550.GA4091@x1.osrc.amd.com>
Date: Tue, 14 Aug 2012 17:05:52 +0200
From: Borislav Petkov <bp@...en8.de>
To: wei_wang@...lsil.com.cn
Cc: gregkh@...uxfoundation.org, devel@...uxdriverproject.org,
linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
cjb@...top.org, arnd@...db.de, sameo@...ux.intel.com
Subject: Re: [PATCH v2 0/2] Add modules to support realtek PCIE card reader
On Tue, Aug 14, 2012 at 06:40:36PM +0800, wei_wang@...lsil.com.cn wrote:
> From: Wei WANG <wei_wang@...lsil.com.cn>
>
> Support for Realtek PCI-Express driver-based card readers including rts5209 and rts5229.
>
> Wei WANG (2):
> drivers/mfd: Add realtek pcie card reader driver
> drivers/mmc: Add realtek pcie sdmmc host driver
>
> drivers/mfd/Kconfig | 9 +
> drivers/mfd/Makefile | 4 +
> drivers/mfd/rts5209.c | 102 +++
> drivers/mfd/rts5229.c | 117 +++
> drivers/mfd/rtsx_pcr.c | 1464 +++++++++++++++++++++++++++++++++++++
> drivers/mfd/rtsx_pcr.h | 31 +
> drivers/mmc/host/Kconfig | 7 +
> drivers/mmc/host/Makefile | 2 +
> drivers/mmc/host/rtsx_pci_sdmmc.c | 1348 ++++++++++++++++++++++++++++++++++
> include/linux/mfd/rtsx_common.h | 47 ++
> include/linux/mfd/rtsx_pci.h | 692 ++++++++++++++++++
> 11 files changed, 3823 insertions(+)
> create mode 100644 drivers/mfd/rts5209.c
> create mode 100644 drivers/mfd/rts5229.c
> create mode 100644 drivers/mfd/rtsx_pcr.c
> create mode 100644 drivers/mfd/rtsx_pcr.h
> create mode 100644 drivers/mmc/host/rtsx_pci_sdmmc.c
> create mode 100644 include/linux/mfd/rtsx_common.h
> create mode 100644 include/linux/mfd/rtsx_pci.h
Yeah, this thing still has issues though.
When I slide in an SD card and do
$ mkfs.ext3 /dev/mmcblk0p1
after having created the partition with fdisk, we run out of DMA space and the
hung-tasks detector triggers:
...
[ 286.244866] mmc0: new ultra high speed SDR50 SDHC card at address e624
[ 286.277199] mmcblk0: mmc0:e624 SU16G 14.8 GiB
[ 286.318163] mmcblk0:
[ 363.754647] mmcblk0: p1
[ 379.545510] DMA: Out of SW-IOMMU space for 438272 bytes at device 0000:03:00.0
[ 389.578514] DMA: Out of SW-IOMMU space for 380928 bytes at device 0000:03:00.0
[ 399.590953] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 409.590698] DMA: Out of SW-IOMMU space for 380928 bytes at device 0000:03:00.0
[ 419.589054] DMA: Out of SW-IOMMU space for 380928 bytes at device 0000:03:00.0
[ 429.587710] DMA: Out of SW-IOMMU space for 380928 bytes at device 0000:03:00.0
[ 439.586748] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 449.603357] DMA: Out of SW-IOMMU space for 516096 bytes at device 0000:03:00.0
[ 459.602781] DMA: Out of SW-IOMMU space for 385024 bytes at device 0000:03:00.0
[ 469.604105] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 479.602964] DMA: Out of SW-IOMMU space for 385024 bytes at device 0000:03:00.0
[ 489.601303] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 499.599617] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 509.597943] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 519.596815] DMA: Out of SW-IOMMU space for 385024 bytes at device 0000:03:00.0
[ 529.594130] DMA: Out of SW-IOMMU space for 389120 bytes at device 0000:03:00.0
[ 539.593000] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 549.594701] DMA: Out of SW-IOMMU space for 471040 bytes at device 0000:03:00.0
[ 559.594068] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 569.592643] DMA: Out of SW-IOMMU space for 389120 bytes at device 0000:03:00.0
[ 579.589890] DMA: Out of SW-IOMMU space for 520192 bytes at device 0000:03:00.0
[ 589.588743] DMA: Out of SW-IOMMU space for 393216 bytes at device 0000:03:00.0
[ 599.587003] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
[ 600.415530] INFO: task flush-179:0:3418 blocked for more than 120 seconds.
[ 600.418439] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 600.421516] flush-179:0 D ffff880117c40050 0 3418 2 0x00000000
[ 600.424578] ffff88011578f650 0000000000000086 ffff88011578f5f0 ffffffff810a567d
[ 600.426155] ffff88011578ffd8 ffff880117e459a0 ffff88011578ffd8 ffff88011578ffd8
[ 600.427705] ffffffff81a13420 ffff880117e459a0 ffff88011578f620 ffff880117e459a0
[ 600.430917] Call Trace:
[ 600.432458] [<ffffffff810a567d>] ? trace_hardirqs_on+0xd/0x10
[ 600.434041] [<ffffffff81495cc9>] schedule+0x29/0x70
[ 600.435627] [<ffffffff81495d9f>] io_schedule+0x8f/0xd0
[ 600.437204] [<ffffffff8121d35b>] get_request+0x15b/0x5e0
[ 600.438766] [<ffffffff81223ccf>] ? ioc_lookup_icq+0x9f/0xf0
[ 600.440340] [<ffffffff81070320>] ? __init_waitqueue_head+0x60/0x60
[ 600.441904] [<ffffffff81220b2d>] blk_queue_bio+0x7d/0x400
[ 600.443486] [<ffffffff8121edc2>] generic_make_request+0xc2/0x110
[ 600.445057] [<ffffffff8121fb65>] submit_bio+0x75/0x100
[ 600.446616] [<ffffffff8117f54a>] ? bio_alloc_bioset+0x5a/0x100
[ 600.448191] [<ffffffff811799d4>] submit_bh+0xf4/0x130
[ 600.449748] [<ffffffff8117c047>] __block_write_full_page+0x1f7/0x390
[ 600.451299] [<ffffffff8117c1e0>] ? __block_write_full_page+0x390/0x390
[ 600.452837] [<ffffffff81180d20>] ? blkdev_get_blocks+0xc0/0xc0
[ 600.452840] [<ffffffff81180d20>] ? blkdev_get_blocks+0xc0/0xc0
[ 600.452845] [<ffffffff8117ca5f>] block_write_full_page_endio+0x10f/0x130
[ 600.452852] [<ffffffff81104fba>] ? clear_page_dirty_for_io+0xba/0x100
[ 600.452856] [<ffffffff8117ca95>] block_write_full_page+0x15/0x20
[ 600.452861] [<ffffffff81180548>] blkdev_writepage+0x18/0x20
[ 600.452865] [<ffffffff81104aba>] __writepage+0x1a/0x50
[ 600.452870] [<ffffffff81105371>] write_cache_pages+0x241/0x490
[ 600.452874] [<ffffffff81104aa0>] ? mapping_tagged+0x20/0x20
[ 600.452880] [<ffffffff81105603>] generic_writepages+0x43/0x60
[ 600.452884] [<ffffffff81106e41>] do_writepages+0x21/0x50
[ 600.452888] [<ffffffff811728bb>] __writeback_single_inode.isra.32+0x3b/0x190
[ 600.452893] [<ffffffff8107fca9>] ? sub_preempt_count+0x79/0xd0
[ 600.452897] [<ffffffff81173695>] writeback_sb_inodes+0x345/0x4f0
[ 600.452901] [<ffffffff811738d7>] __writeback_inodes_wb+0x97/0xd0
[ 600.452905] [<ffffffff81173b1b>] wb_writeback+0x20b/0x340
[ 600.452910] [<ffffffff811743d5>] wb_do_writeback+0x205/0x260
[ 600.452915] [<ffffffff811744c3>] bdi_writeback_thread+0x93/0x2b0
[ 600.452919] [<ffffffff81174430>] ? wb_do_writeback+0x260/0x260
[ 600.452923] [<ffffffff8106fcaa>] kthread+0xea/0xf0
[ 600.452930] [<ffffffff814990a4>] kernel_thread_helper+0x4/0x10
[ 600.452935] [<ffffffff8107b355>] ? finish_task_switch+0x85/0x110
[ 600.452939] [<ffffffff8149728b>] ? _raw_spin_unlock_irq+0x3b/0x60
[ 600.452943] [<ffffffff8149769d>] ? retint_restore_args+0xe/0xe
[ 600.452947] [<ffffffff8106fbc0>] ? kthread_create_on_node+0x160/0x160
[ 600.452951] [<ffffffff814990a0>] ? gs_change+0xb/0xb
[ 600.452978] 1 lock held by flush-179:0/3418:
[ 600.452990] #0: (&type->s_umount_key#19){.+.+..}, at: [<ffffffff8114ce13>] grab_super_passive+0x43/0x90
[ 600.452993] INFO: task mkfs.ext3:3438 blocked for more than 120 seconds.
[ 600.452995] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 600.453000] mkfs.ext3 D ffff880117c40098 0 3438 3353 0x00000000
[ 600.453005] ffff880117e519b8 0000000000000082 ffff880117e51958 ffffffff810a567d
[ 600.453010] ffff880117e51fd8 ffff880117e42cd0 ffff880117e51fd8 ffff880117e51fd8
[ 600.453015] ffffffff81a13420 ffff880117e42cd0 ffff880117e51988 ffff880117e42cd0
[ 600.453017] Call Trace:
[ 600.453021] [<ffffffff810a567d>] ? trace_hardirqs_on+0xd/0x10
[ 600.453026] [<ffffffff81495cc9>] schedule+0x29/0x70
[ 600.453031] [<ffffffff81495d9f>] io_schedule+0x8f/0xd0
[ 600.453034] [<ffffffff8121d35b>] get_request+0x15b/0x5e0
[ 600.453039] [<ffffffff81223ccf>] ? ioc_lookup_icq+0x9f/0xf0
[ 600.453043] [<ffffffff81070320>] ? __init_waitqueue_head+0x60/0x60
[ 600.453047] [<ffffffff81220b2d>] blk_queue_bio+0x7d/0x400
[ 600.453052] [<ffffffff8121edc2>] generic_make_request+0xc2/0x110
[ 600.453055] [<ffffffff8121fb65>] submit_bio+0x75/0x100
[ 600.453060] [<ffffffff8117f54a>] ? bio_alloc_bioset+0x5a/0x100
[ 600.453064] [<ffffffff811799d4>] submit_bh+0xf4/0x130
[ 600.453068] [<ffffffff8117c047>] __block_write_full_page+0x1f7/0x390
[ 600.453073] [<ffffffff8117c1e0>] ? __block_write_full_page+0x390/0x390
[ 600.453076] [<ffffffff81180d20>] ? blkdev_get_blocks+0xc0/0xc0
[ 600.453080] [<ffffffff81180d20>] ? blkdev_get_blocks+0xc0/0xc0
[ 600.453084] [<ffffffff8117ca5f>] block_write_full_page_endio+0x10f/0x130
[ 600.453089] [<ffffffff81104fba>] ? clear_page_dirty_for_io+0xba/0x100
[ 600.453094] [<ffffffff8117ca95>] block_write_full_page+0x15/0x20
[ 600.453098] [<ffffffff81180548>] blkdev_writepage+0x18/0x20
[ 600.453102] [<ffffffff81104aba>] __writepage+0x1a/0x50
[ 600.453106] [<ffffffff81105371>] write_cache_pages+0x241/0x490
[ 600.453111] [<ffffffff81104aa0>] ? mapping_tagged+0x20/0x20
[ 600.453117] [<ffffffff81105603>] generic_writepages+0x43/0x60
[ 600.453121] [<ffffffff81106e41>] do_writepages+0x21/0x50
[ 600.453125] [<ffffffff810fd6e1>] __filemap_fdatawrite_range+0x51/0x60
[ 600.453129] [<ffffffff810fd742>] filemap_write_and_wait_range+0x52/0x70
[ 600.453133] [<ffffffff81180744>] blkdev_fsync+0x24/0x50
[ 600.453137] [<ffffffff81178110>] do_fsync+0x50/0x80
[ 600.453140] [<ffffffff811783a0>] sys_fsync+0x10/0x20
[ 600.453144] [<ffffffff81497f92>] system_call_fastpath+0x16/0x1b
[ 600.453147] no locks held by mkfs.ext3/3438.
[ 609.585190] DMA: Out of SW-IOMMU space for 524288 bytes at device 0000:03:00.0
--
Regards/Gruss,
Boris.
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