[#5610] DMA Channel 14 failed to suspend in mem in bf527 with lcd module installed

Submitted By: Vivi Li

Open Date

2009-10-14 06:57:04 Close Date

2009-10-29 23:55:49

Priority:

Medium Assignee:

Michael Hennerich

Status:

Closed Fixed In Release:

N/A

Found In Release:

2010R1 Release:

Category:

N/A Board:

EZKIT Lite

Processor:

BF527 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

gcc4.1-09r1-rc9

App binary format:

N/A

Summary: DMA Channel 14 failed to suspend in mem in bf527 with lcd module installed

Details:

DMA Channel 14 failed to suspend in mem in bf527-ezkit with lcd module installed.

It can suspend in standby mode.

Linux version 2.6.31.3-ADI-2010R1-pre-svn7591 (test@uclinux-bf527-std) (gcc version 4.1.2 (ADI svn)) #81 Tue Oct 13 20:58:48 CST9

bootconsole [early_shadow0] enabled

bootconsole [early_BFuart1] enabled

early printk enabled on early_BFuart1

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x00138670

rodata = 0x00138670-0x001a0ffc

bss = 0x001a1000-0x001b2764

data = 0x001b2764-0x001c6000

stack = 0x001c4000-0x001c6000

init = 0x001c6000-0x0093a000

available = 0x0093a000-0x03dff000

DMA Zone = 0x03e00000-0x04000000

Hardware Trace Active and Enabled

Boot Mode: 1

Compiled for ADSP-BF527 Rev 0.2

Blackfin Linux support by http://blackfin.uclinux.org/

Processor Speed: 525 MHz core clock and 131 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

External memory: cacheable in instruction cache

Data Cache Enabled for CPU0

External memory: cacheable (write-back) in data cache

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 15747

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart1,57600 console=tty0 console=ttyBF1,57600 if

PID hash table entries: 256 (order: 8, 1024 bytes)

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory available: 53468k/65536k RAM, (7632k init code, 1245k kernel code, 567k data, 2048k dma, 572k reserved)

NR_IRQS:119

Configuring Blackfin Priority Driven Interrupts

console [ttyBF1] enabled, bootconsole disabled

Calibrating delay loop... 1046.52 BogoMIPS (lpj=2093056)

Security Framework initialized

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (16 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 48 KB (41 KB free)

NET: Registered protocol family 16

Blackfin DMA Controller

ezkit_init(): registering device resources

bio: create slab <bio-0> at 0

SCSI subsystem initialized

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 2048 (order: 2, 16384 bytes)

TCP bind hash table entries: 2048 (order: 1, 8192 bytes)

TCP: Hash tables configured (established 2048 bind 2048)

TCP reno registered

NET: Registered protocol family 1

msgmni has been set to 104

io scheduler noop registered

io scheduler anticipatory registered (default)

io scheduler cfq registered

bfin-otp: initialized

bfin-uart: Blackfin serial driver

bfin-uart.1: ttyBF1 at MMIO 0xffc02000 (irq = 31) is a BFIN-UART

brd: module loaded

bfin_mii_bus: probed

bfin_mac: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:03, irq=-1, mdc_clk=2500000Hz(mdc_div=25)@sclk=131MHz)

bfin_mac bfin_mac.0: Blackfin on-chip Ethernet MAC driver, Version 1.1

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

Advanced Linux Sound Architecture Driver Version 1.0.20.

ALSA device list:

No soundcards found.

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 2004-05-31 06:39:40 UTC (1085985580)

IP-Config: Complete:

device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,

host=bf527-ezkit, domain=, nis-domain=(none),

bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=

Freeing unused kernel memory: 7632k freed

dma_alloc_init: dma_page @ 0x0299d000 - 512 pages at 0x03e00000

_____________________________________

a8888b. / Welcome to the uClinux distribution \

d888888b. / _ _ \

8P"YP"Y88 / | | |_| __ __ (TM) |

8|o||o|88 _____/ | | _ ____ _ _ \ \/ / |

8' .88 \ | | | | _ \| | | | \ / |

8`._.' Y8. \ | |__ | | | | | |_| | / \ |

d/ `8b. \ \____||_|_| |_|\____|/_/\_\ |

dP . Y8b. \ For embedded processors including |

d8:' " `::88b \ the Analog Devices Blackfin /

d8" 'Y88b \___________________________________/

:8P ' :888

8a. : _a88P For further information, check out:

._/"Yaa_: .| 88P| - http://blackfin.uclinux.org/

\ YP" `| 8P `. - http://docs.blackfin.uclinux.org/

/ \.___.d| .' - http://www.uclinux.org/

`--..__)8888P`._.' jgs/a:f - http://www.analog.com/blackfin

Have a lot of fun...

BusyBox v1.15.2 (2009-10-13 20:57:03 CST) hush - the humble shell

root:/> PHY: 0:03 - Link is Up - 100/Full

root:/> modprobe bfin_t350mcqb_fb

bfin-t350mcqb: 320x240 24-bit RGB FrameBuffer initializing...

root:/> lsmod

Module Size Used by

bfin_t350mcqb_fb 4504 0

cfbimgblt 1632 1 bfin_t350mcqb_fb

cfbfillrect 2852 1 bfin_t350mcqb_fb

cfbcopyarea 3116 1 bfin_t350mcqb_fb

root:/> video_test

root:/> rtcwake -s 15 -m mem

wakeup from "mem" at Mon May 31 06:40:29 2004

PM: Syncing filesystems ... done.

Freezing user space processes ... (elapsed 0.01 seconds) done.

Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.

Suspending console(s) (use no_console_suspend to debug)

PHY: 0:03 - Link is Down

Restarting tasks ... done.

PHY: 0:03 - Link is Up - 100/Full

root:/>

root:/> rtcwake -s 15 -m mem

wakeup from "mem" at Mon May 31 06:40:52 2004

PM: Syncing filesystems ... done.

Freezing user space processes ... (elapsed 0.01 seconds) done.

Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.

Suspending console(s) (use no_console_suspend to debug)

PHY: 0:03 - Link is Down

DMA Channel 14 failed to suspend

Restarting tasks ... done.

PHY: 0:03 - Link is Up - 100/Full

root:/>

Follow-ups

--- Michael Hennerich 2009-10-20 09:39:55

During PM state suspend mem transitions - the Blackfin BOOTROM utilizes MEMDMA1

- but doesn't clear MDMA_S1_CONFIG, MDMA_D1_CONFIG afterwards - so the

blackfin_dma_suspend() check for DMAEN will fail the second time. Fixed by

clearing all DMA Channel Config registers after resume from suspend mem.

Fixed on trunk.

The check for DMAEN in blackfin_dma_suspend() doesn't exist in the 2009R1

release.

-Michael

--- Vivi Li 2009-10-29 23:55:49

OK now. Close it.

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