From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gateway.innomedia.soft.net (unknown [220.227.188.61]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 8E99167B67 for ; Wed, 13 Sep 2006 21:11:31 +1000 (EST) Received: from tambethinkpad ([192.168.28.2]) (authenticated bits=0) by gateway.innomedia.soft.net (8.12.11/8.12.11) with ESMTP id k8DBBO9c002412 for ; Wed, 13 Sep 2006 16:41:24 +0530 Message-ID: <002301c6d725$553a8c60$021ca8c0@tambethinkpad> From: "Akhilesh" To: Subject: IDE DMA Issue ppc Date: Wed, 13 Sep 2006 16:41:16 +0530 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_001F_01C6D753.6EC1CD50" List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C6D753.6EC1CD50 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0020_01C6D753.6EC1CD50" ------=_NextPart_001_0020_01C6D753.6EC1CD50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi All, I'm using IBM redwood6 stb025xx(ppc405gp) platform with 2.6.14 kernel. = I'm trying to get DMA working for IDE interface (PIO is working). The = problem I'm facing is that my DMA is completing and I'm getting a error = in DMA status register that "A DMA request from an external device is = pending" I'm attaching the console message along with the sample code of the = driver. Please help me to resolve this issue. What I feel is that DMA is = completing and IDE is not getting anything. ( IDE status register is = giving 0x58). Any pointers to same will be highly appreciated. Regards, Akhilesh ------=_NextPart_001_0020_01C6D753.6EC1CD50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi All,

I'm using IBM redwood6 = stb025xx(ppc405gp) platform=20 with 2.6.14 kernel. I'm trying to get DMA working for IDE interface (PIO = is=20 working). The problem I'm facing is that my DMA is completing and I'm = getting a=20 error in DMA status register that "A DMA request from an external=20 device is pending"

I'm attaching the console message along = with the=20 sample code of the driver. Please help me to resolve this issue. What I = feel is=20 that DMA is completing and IDE is not getting anything. ( IDE status = register is=20 giving 0x58).

Any pointers to same will be highly=20 appreciated.

Regards,

Akhilesh

------=_NextPart_001_0020_01C6D753.6EC1CD50-- ------=_NextPart_000_001F_01C6D753.6EC1CD50 Content-Type: text/plain; name="console.txt" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="console.txt" =0A= =0A= IBM Set-Top-Box BIOS 1.50 (Feb-16-2004)=0A= =0A= Platform support =0A= =0A= =0A= Initializing devices, please wait.....=0A= =0A= =0A= ------- System Info --------=0A= =0A= Processor speed =3D 252 MHz=0A= =0A= EBIU speed =3D 63 MHz=0A= =0A= Amount of RAM =3D 64 MBytes=0A= =0A= DM9000 : dmfe_probe() : Checking DM9000 chip =0A= =0A= DM9000 : Chip Found ID : 90000a46 =0A= =0A= =0A= --- Device Configuration ---=0A= =0A= Power-On Test Devices:=0A= =0A= 000 Disabled System Memory [RAM]=0A= =0A= ----------------------------=0A= =0A= Boot Sources:=0A= =0A= 001 Disabled Application in Flash [FLASH]=0A= =0A= 002 Enabled Ethernet [ENET]=0A= =0A= local=3D192.168.18.28 remote=3D192.168.18.101 = hwaddr=3Dbad0add00000=0A= =0A= 003 Disabled Serial Port 1 [S1]=0A= =0A= Baud =3D 9600=0A= =0A= ----------------------------=0A= =0A= Update Flash : Disabled =0A= =0A= Automatic Boot: Disabled=0A= =0A= ----------------------------=0A= =0A= 1 - Toggle Power-On Tests=0A= =0A= 2 - Change a Boot Device=0A= =0A= 3 - Change IP Addresses=0A= =0A= 4 - Ping test=0A= =0A= 5 - Change Baud Rate for S1 Boot=0A= =0A= 6 - Toggle Update Flash=0A= =0A= 7 - Toggle Automatic Boot=0A= =0A= B - Bootlogo Management=0A= =0A= D - Display Configuration=0A= =0A= S - Save Changes=0A= =0A= Z - Set Ethernet HW Address=0A= =0A= 0 - Exit Menu and Boot Application=0A= =0A= C - Enable CHOIS Debug =0A= =0A= ->0=0A= =0A= DM900 : dmfe_init_dm9000 : initialising dm9000=0A= =0A= Booting from [ENET] Ethernet...=0A= =0A= Sending bootp request ...=0A= =0A= bootp packets sent =3D 1=0A= DM900 : dmfe_send : hold frame collision, outbound frame.=0A= =0A= =0A= Got bootp response from : 192.168.18.101=0A= =0A= My ip address is : 192.168.18.28=0A= =0A= =0A= Loading file "zImage.treeboot" by TFTP for net boot ...=0A= =0A= block 268=0A= block 1440=0A= Transfer completed, 897568 bytes received=0A= =0A= Loaded successfully ...=0A= =0A= Entry point at 0x500000 ...=0A= =0A= =0A= loaded at: 00500000 005DC164=0A= =0A= relocated to: 00400000 004DC164=0A= =0A= board data at: 004DA124 004DA164=0A= =0A= relocated to: 0040515C 0040519C=0A= =0A= zimage at: 0040591D 004D9A6C=0A= =0A= avail ram: 004DD000 02000000=0A= =0A= =0A= Linux/PPC load: ip=3Don=0A= =0A= Uncompressing Linux...done.=0A= =0A= Now booting the kernel=0A= =0A= Linux version 2.6.14 (root@localhost.localdomain) (gcc version 4.0.0 = (DENX ELDK 4.0 4.0.0)) #258 Wed Sep 13 16:12:58 IST 2006=0A= =0A= ocp: ocp_early_init()...=0A= =0A= ocp: ocp_add_one_device()...=0A= =0A= ocp: ocp_add_one_device()...done=0A= =0A= ocp: ocp_add_one_device()...=0A= =0A= ocp: ocp_add_one_device()...done=0A= =0A= ocp: ocp_add_one_device()...=0A= =0A= ocp: ocp_add_one_device()...done=0A= =0A= ocp: ocp_add_one_device()...=0A= =0A= ocp: ocp_add_one_device()...done=0A= =0A= ocp: ocp_add_one_device()...=0A= =0A= ocp: ocp_add_one_device()...done=0A= =0A= ocp: ocp_add_one_device()...=0A= =0A= ocp: ocp_add_one_device()...done=0A= =0A= ocp: ocp_early_init()... done.=0A= =0A= IBM Redwood6 (STBx25XX) Platform=0A= =0A= Port by MontaVista Software, Inc. (source@mvista.com)=0A= =0A= Built 1 zonelists=0A= =0A= Kernel command line: ip=3Don=0A= =0A= PID hash table entries: 256 (order: 8, 4096 bytes)=0A= =0A= Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)=0A= =0A= Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)=0A= =0A= Memory: 30488k available (1452k kernel code, 344k data, 96k init, 0k = highmem)=0A= =0A= Mount-cache hash table entries: 512=0A= =0A= NET: Registered protocol family 16=0A= =0A= ocp: ocp_driver_init()...=0A= =0A= ocp: ocp_driver_init()... done.=0A= =0A= Adding platform devices =0A= =0A= Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled=0A= =0A= ttyS0 at MMIO 0x0 (irq =3D 22) is a 16550A=0A= =0A= ttyS1 at MMIO 0x0 (irq =3D 20) is a 16550A=0A= =0A= ttyS2 at MMIO 0x0 (irq =3D 21) is a 16550A=0A= =0A= io scheduler noop registered=0A= =0A= io scheduler anticipatory registered=0A= =0A= io scheduler deadline registered=0A= =0A= io scheduler cfq registered=0A= =0A= RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize=0A= =0A= loop: loaded (max 8 devices)=0A= =0A= dm9000 Ethernet Driver=0A= =0A= dm9000_set_io : byte_width 2=0A= =0A= eth0: dm9000 at c3000000,c3000004 IRQ 26 MAC: ba:d0:ad:d0:00:00=0A= =0A= Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2=0A= =0A= ide: Assuming 50MHz system bus speed for PIO modes; override with = idebus=3Dxx=0A= =0A= NET: Registered protocol family 2=0A= =0A= IP route cache hash table entries: 512 (order: -1, 2048 bytes)=0A= =0A= TCP established hash table entries: 2048 (order: 1, 8192 bytes)=0A= =0A= TCP bind hash table entries: 2048 (order: 1, 8192 bytes)=0A= =0A= TCP: Hash tables configured (established 2048 bind 2048)=0A= =0A= TCP reno registered=0A= =0A= TCP bic registered=0A= =0A= NET: Registered protocol family 1=0A= =0A= inside stb04xxx_ide_init =0A= =0A= IBM STB025xx OCP IDE driver version 1.0 f2100000 =0A= =0A= ide_redwood: waiting for drive ready......Drive spun up =0A= =0A= ocp_ide_setup_dma =0A= =0A= probing for hda: present=3D0, media=3D32, probetype=3DATA=0A= =0A= hda: probing with STATUS(0x51) instead of ALTSTATUS(0x00)=0A= =0A= hda: WDC WD400EB-00CPF0, ATA DISK drive=0A= =0A= probing for hdb: present=3D0, media=3D32, probetype=3DATA=0A= =0A= probing for hdb: present=3D0, media=3D32, probetype=3DATAPI=0A= =0A= hdb: probing with STATUS(0x01) instead of ALTSTATUS(0x00)=0A= =0A= ocp_ide_tune_drive pio 4=0A= =0A= got ocp_ide_dma_off_quietly=0A= =0A= got ocp_ide_dma_check=0A= =0A= redwood_config_drive_for_dma 22=0A= =0A= ocp_ide_tune_drive pio 4=0A= =0A= got ocp_ide_dma_on=0A= =0A= ide0 at 0xc3004000-0xc3004007,0xc3006000 on irq 27=0A= =0A= hda: max request size: 128KiB=0A= =0A= ide_execute_command : 0x91=0A= =0A= ide_execute_command : 0x10=0A= =0A= ide_execute_command : 0xf8=0A= =0A= hda: 78165360 sectors (40020 MB) w/2048KiB Cache, CHS=3D65535/16/63, = (U)DMA=0A= =0A= hda: cache flushes not supported=0A= =0A= hda:__ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c0340000 340000 count 8 dmastat 0=0A= =0A= got ocp_ide_dma_test_irq=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 50=0A= =0A= DMA complete stat 0 500000=0A= =0A= hda1=0A= =0A= IDE probe finished =0A= =0A= eth0: link up, 100Mbps, full-duplex, lpa 0x41E1=0A= =0A= Sending BOOTP and RARP requests . OK=0A= =0A= IP-Config: Got BOOTP answer from 192.168.18.101, my address is = 192.168.18.28=0A= =0A= IP-Config: Complete:=0A= =0A= device=3Deth0, addr=3D192.168.18.28, mask=3D255.255.255.0, = gw=3D192.168.18.1,=0A= =0A= host=3D192.168.18.28, domain=3D, nis-domain=3D(none),=0A= =0A= bootserver=3D192.168.18.101, rootserver=3D192.168.18.101, = rootpath=3D/opt/eldk/ppc_4xx=0A= =0A= Looking up port of RPC 100003/2 on 192.168.18.101=0A= =0A= Looking up port of RPC 100005/1 on 192.168.18.101=0A= =0A= VFS: Mounted root (nfs filesystem) readonly.=0A= =0A= Freeing unused kernel memory: 96k init=0A= =0A= modprobe: FATAL: Could not load /lib/modules/2.6.14/modules.dep: No such = file or directory=0A= =0A= modprobe: FATAL: Could not load /lib/modules/2.6.14/modules.dep: No such = file or directory=0A= =0A= =0A= INIT: version 2.85 booting=0A= Came here in rc.sysinit creating var\n=0A= mounting =0A= ln: `/proc/mounts': File exists=0A= Welcome to DENX Embedded Linux Environment=0A= Press 'I' to enter interactive startup.=0A= Building the cache [ OK ]=0A= storage network audio done[ OK ]=0A= modprobe: FATAL: Could not load /lib/modules/2.6.14/modules.dep: No such = file or directory=0A= =0A= Cannot access the Hardware Clock via any known method.=0A= Use the --debug option to see the details of our search for an access = method.=0A= Setting clock : Thu Jan 1 01:00:12 MET 1970 [ OK ]=0A= Setting hostname CHOISpad-110: [ OK ]=0A= Mounting local filesystems: [ OK ]=0A= Enabling swap space: [ OK ]=0A= =0A= INIT: Entering runlevel: 3=0A= Entering non-interactive startup=0A= Bringing up loopback interface: modprobe: FATAL: Could not load = /lib/modules/2.6.14/modules.dep: No such file or directory=0A= =0A= arping: socket: Address family not supported by protocol=0A= Error, some other host already uses address 127.0.0.1.=0A= [FAILED]=0A= Starting system logger: [ OK ]=0A= Starting kernel logger: [ OK ]=0A= Starting portmap: [ OK ]=0A= Mounting NFS filesystems: [ OK ]=0A= Mounting other filesystems: [ OK ]=0A= Starting xinetd: [ OK ]=0A= =0A= DENX ELDK version 4.0 build 2006-01-11=0A= Linux 2.6.14 on a ppc=0A= =0A= CHOISpad-110 login: root=0A= Last login: Thu Jan 1 01:00:19 on console=0A= bash-3.00# =0A= bash-3.00# =0A= bash-3.00# =0A= bash-3.00# =0A= bash-3.00# =0A= bash-3.00# hdparm -t=08 =08=08 =08/dev/hda=0A= =0A= /dev/hda:=0A= multcount =3D 0 (off)=0A= I/O support =3D 0 (default 16-bit)=0A= unmaskirq =3D 1 (on)=0A= using_dma =3D 1 (on)=0A= keepsettings =3D 0 (off)=0A= nowerr =3D 0 (off)=0A= readonly =3D 0 (off)=0A= readahead =3D 256 (on)=0A= geometry =3D 65535/16/63, sectors =3D 78165360, start =3D 0=0A= bash-3.00# =0A= bash-3.00# =0A= bash-3.00# =0A= bash-3.00# =0A= bash-3.00# hdparm -t /dev/hda=0A= =0A= /dev/hda:=0A= Timing buffered__ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= disk reads: got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= __ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= ide_execute_command : 0x10=0A= =0A= __ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= __ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= got ocp_ide_dma_off_quietly=0A= =0A= ide0: reset: master: error (0x00?)=0A= =0A= ide_execute_command : 0x91=0A= =0A= ide_execute_command : 0x10=0A= =0A= __ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= __ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= ide_execute_command : 0x10=0A= =0A= __ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= __ide_do_rw_disk : dma 1 lba48 0 LBA=3D0=0A= =0A= got ocp_ide_dma_setup =0A= =0A= ide_execute_command : 0xc8=0A= =0A= got ocp_ide_dma_begin 0x1000=0A= =0A= DMA addr c1238000 1238000 count 8 dmastat 0=0A= =0A= DMA complete stat 20001000 0=0A= =0A= hda: lost interrupt=0A= =0A= got ocp_ide_dma_end 0 20000000=0A= =0A= ide_dma_intr : stat 58=0A= =0A= hda: dma_intr: status=3D0x58 { DriveReady SeekComplete DataRequest }=0A= =0A= ide: failed opcode was: unknown=0A= =0A= got ocp_ide_dma_off_quietly=0A= =0A= ide0: reset: master: error (0x00?)=0A= =0A= end_request: I/O error, dev hda, sector 0=0A= =0A= Buffer I/O error on device hda, logical block 0=0A= =0A= end_request: I/O error, dev hda, sector 8=0A= =0A= Buffer I/O error on device hda, logical block 1=0A= =0A= end_request: I/O error, dev hda, sector 16=0A= =0A= Buffer I/O error on device hda, logical block 2=0A= =0A= end_request: I/O error, dev hda, sector 24=0A= =0A= Buffer I/O error on device hda, logical block 3=0A= =0A= end_request: I/O error, dev hda, sector 32=0A= =0A= Buffer I/O error on device hda, logical block 4=0A= =0A= end_request: I/O error, dev hda, sector 40=0A= =0A= Buffer I/O error on device hda, logical block 5=0A= =0A= end_request: I/O error, dev hda, sector 48=0A= =0A= Buffer I/O error on device hda, logical block 6=0A= =0A= end_request: I/O error, dev hda, sector 56=0A= =0A= Buffer I/O error on device hda, logical block 7=0A= =0A= end_request: I/O error, dev hda, sector 64=0A= =0A= Buffer I/O error on device hda, logical block 8=0A= =0A= end_request: I/O error, dev hda, sector 72=0A= =0A= Buffer I/O error on device hda, logical block 9=0A= =0A= end_request: I/O error, dev hda, sector 80=0A= =0A= end_request: I/O error, dev hda, sector 88=0A= =0A= end_request: I/O error, dev hda, sector 96=0A= =0A= end_request: I/O error, dev hda, sector 104=0A= =0A= end_request: I/O error, dev hda, sector 112=0A= =0A= end_request: I/O error, dev hda, sector 120=0A= =0A= end_request: I/O error, dev hda, sector 128=0A= =0A= end_request: I/O error, dev hda, sector 136=0A= =0A= end_request: I/O error, dev hda, sector 144=0A= =0A= end_request: I/O error, dev hda, sector 152=0A= =0A= end_request: I/O error, dev hda, sector 160=0A= =0A= end_request: I/O error, dev hda, sector 168=0A= =0A= end_request: I/O error, dev hda, sector 176=0A= =0A= end_request: I/O error, dev hda, sector 184=0A= =0A= end_request: I/O error, dev hda, sector 192=0A= =0A= end_request: I/O error, dev hda, sector 200=0A= =0A= end_request: I/O error, dev hda, sector 208=0A= =0A= end_request: I/O error, dev hda, sector 216=0A= =0A= end_request: I/O error, dev hda, sector 224=0A= =0A= end_request: I/O error, dev hda, sector 232=0A= =0A= end_request: I/O error, dev hda, sector 240=0A= =0A= end_request: I/O error, dev hda, sector 248=0A= =0A= end_request: I/O error, dev hda, sector 256=0A= =0A= end_request: I/O error, dev hda, sector 264=0A= =0A= end_request: I/O error, dev hda, sector 272=0A= =0A= end_request: I/O error, dev hda, sector 280=0A= =0A= end_request: I/O error, dev hda, sector 288=0A= =0A= end_request: I/O error, dev hda, sector 296=0A= =0A= end_request: I/O error, dev hda, sector 304=0A= =0A= end_request: I/O error, dev hda, sector 312=0A= =0A= end_request: I/O error, dev hda, sector 320=0A= =0A= end_request: I/O error, dev hda, sector 328=0A= =0A= end_request: I/O error, dev hda, sector 336=0A= =0A= end_request: I/O error, dev hda, sector 344=0A= =0A= end_request: I/O error, dev hda, sector 352=0A= =0A= end_request: I/O error, dev hda, sector 360=0A= =0A= end_request: I/O error, dev hda, sector 368=0A= =0A= end_request: I/O error, dev hda, sector 376=0A= =0A= end_request: I/O error, dev hda, sector 384=0A= =0A= end_request: I/O error, dev hda, sector 392=0A= =0A= end_request: I/O error, dev hda, sector 400=0A= =0A= end_request: I/O error, dev hda, sector 408=0A= =0A= end_request: I/O error, dev hda, sector 416=0A= =0A= end_request: I/O error, dev hda, sector 424=0A= =0A= end_request: I/O error, dev hda, sector 432=0A= =0A= end_request: I/O error, dev hda, sector 440=0A= =0A= end_request: I/O error, dev hda, sector 448=0A= =0A= end_request: I/O error, dev hda, sector 456=0A= =0A= end_request: I/O error, dev hda, sector 464=0A= =0A= end_request: I/O error, dev hda, sector 472=0A= =0A= end_request: I/O error, dev hda, sector 480=0A= =0A= end_request: I/O error, dev hda, sector 488=0A= =0A= end_request: I/O error, dev hda, sector 496=0A= =0A= end_request: I/O error, dev hda, sector 504=0A= =0A= end_request: I/O error, dev hda, sector 0=0A= =0A= read() failed: Input/output error=0A= bash-3.00# ------=_NextPart_000_001F_01C6D753.6EC1CD50 Content-Type: application/octet-stream; name="ibm_ocp_ide.c" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="ibm_ocp_ide.c" /* * IDE Driver Based on ocp_stbxxxx.c */ #include #include #include #include #include #include #include #include #include "ide_modes.h" #define IDEVR "1.0" #define TRUE 1 #define FALSE 0 #define IN_BYTE(p) (byte)inb_p(p) #define OUT_BYTE(b,p) outb((b),(p)) typedef unsigned int ide_ioreg_t; static int pio_mode[2] =3D { -1, -1 }; ppc_dma_ch_t dma_ch; /* use DMA channel 2 for IDE DMA operations */ #define IDE_DMACH 2 /* 2nd DMA channel */ #define IDE_DMA_INT 6 /* IDE dma channel 2 interrupt */ //#define WMODE 1 /* default to DMA line mode */ #define PIOMODE 0 static volatile unsigned long dmastat; /* Function Prototypes */ static void ocp_ide_tune_drive(ide_drive_t *, byte); static byte ocp_ide_dma_2_pio(byte); static int ocp_ide_tune_chipset(ide_drive_t *, byte); static int ocp_ide_dma_on(ide_drive_t *drive); static void ocp_dma_exec_cmd (ide_drive_t * const drive, u8 command); static void ocp_ide_tune_drive(ide_drive_t * drive, byte pio) { pio =3D ide_get_best_pio_mode(drive, pio, 5, NULL); printk("ocp_ide_tune_drive pio %d\n",pio); } static byte ocp_ide_dma_2_pio(byte xfer_rate) { switch (xfer_rate) { case XFER_UDMA_5: case XFER_UDMA_4: case XFER_UDMA_3: case XFER_UDMA_2: case XFER_UDMA_1: case XFER_UDMA_0: case XFER_MW_DMA_2: case XFER_PIO_4: return 4; case XFER_MW_DMA_1: case XFER_PIO_3: return 3; case XFER_SW_DMA_2: case XFER_PIO_2: return 2; case XFER_MW_DMA_0: case XFER_SW_DMA_1: case XFER_SW_DMA_0: case XFER_PIO_1: case XFER_PIO_0: case XFER_PIO_SLOW: default: return 0; } } static int ocp_ide_tune_chipset(ide_drive_t * drive, byte speed) { int err =3D 0; printk("ocp_ide_tune_chipset speed %d\n",speed); ocp_ide_tune_drive(drive, ocp_ide_dma_2_pio(speed)); if (!drive->init_speed) drive->init_speed =3D speed; err =3D ide_config_drive_speed(drive, speed); drive->current_speed =3D speed; printk("ocp_ide_tune_chipset speed %d\n",speed); return err; } static int redwood_config_drive_for_dma(ide_drive_t * drive) { struct hd_driveid *id =3D drive->id; byte speed; /* * Enable DMA on any drive that has multiword DMA */ if (id->field_valid & 2) { if (id->dma_mword & 0x0004) { speed =3D XFER_MW_DMA_2; } else if (id->dma_mword & 0x0002) { speed =3D XFER_MW_DMA_1; } else if (id->dma_mword & 1) { speed =3D XFER_MW_DMA_0; } else if (id->dma_1word & 0x0004) { speed =3D XFER_SW_DMA_2; } else { speed =3D XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL); } } printk("redwood_config_drive_for_dma %x\n",speed); ocp_ide_tune_drive(drive, ocp_ide_dma_2_pio(speed)); return ocp_ide_dma_on(drive); } int ocp_ide_dma_intr(int irq, void *dev_id, struct pt_regs *regs) { unsigned long flags; unsigned long tmp; =09 local_irq_save(flags); //dmastat =3D ppc4xx_get_dma_status(); dmastat =3D mfdcr(DCRN_DMASR); #ifdef WMODE if (dmastat & 0x1000) { //This should not happen at least in Word Mode, I have noticed this. = Is it some timing problem ? printk ("ocp_ide_dma_intr dma req pending from external device\n"); } #endif //mtdcr(DCRN_DMASR, ((u32)DMA_CH2_ERR | (u32)DMA_CS2 | (u32)DMA_TS2)); mtdcr(DCRN_DMASR,0x22211120); /* disable DMA */ /*uicdcr =3D mfdcr (DCRN_UIC_PR (UIC0)); uicdcr &=3D ~(0x80000000ul >> IDE_DMA_INT); mtdcr (DCRN_UIC_PR(UIC0), uicdcr); mtdcr (DCRN_UIC_TR(UIC0), mfdcr (DCRN_UIC_TR (UIC0)) | (0x80000000ul >> IDE_DMA_INT)); */ //ppc4xx_disable_dma_interrupt(IDE_DMACH); tmp =3D mfdcr(DCRN_DMASR); mtdcr (DCRN_UIC_SR(UIC0),(0x80000000ul >> IDE_DMA_INT)); printk("GOT DMA interrupt %x %x\n",dmastat,tmp); local_irq_restore(flags); return 0; //ppc4xx_clr_dma_status(IDE_DMACH); } void ibm25xx_ide_spinup(int index) { int i,j; ide_ioreg_t *io_ports; printk("ide_redwood: waiting for drive ready.."); io_ports =3D ide_hwifs[index].io_ports; /* wait until drive is not busy (it may be spinning up) */ for (i =3D 0; i < 30; i++) { unsigned char stat; stat =3D inb_p(io_ports[7]); /* wait for !busy & ready */ if ((stat & 0x80) =3D=3D 0) { break; } for(j=3D0;j<10;j++) udelay(1000 * 100); /* 1 second */ } printk(".."); /* select slave */ outb_p(0xa0 | 0x10, io_ports[6]); for (i =3D 0; i < 30; i++) { unsigned char stat; stat =3D inb_p(io_ports[7]); /* wait for !busy & ready */ if ((stat & 0x80) =3D=3D 0) { break; } for(j=3D0;j<10;j++) udelay(1000 * 100); /* 1 second */ } printk(".."); outb_p(0xa0, io_ports[6]); printk("Drive spun up \n"); } static int ocp_ide_dma_off(ide_drive_t *drive){ printk("got ocp_ide_dma_off\n"); return 0;; } static int ocp_ide_dma_off_quietly(ide_drive_t *drive){ printk("got ocp_ide_dma_off_quietly\n"); return 0; } static int ocp_ide_dma_on(ide_drive_t *drive){ ide_hwif_t *hwif =3D HWIF(drive); int i, reading =3D 0; struct request *rq =3D HWGROUP(drive)->rq; unsigned long flags; unsigned long length; printk("got ocp_ide_dma_on\n"); #if PIOMODE return 1; #endif mtdcr(DCRN_DMACR2, 0); ppc4xx_clr_dma_status(IDE_DMACH); /*save_flags(flags); cli(); if (request_irq (IDE_DMA_INT, &ocp_ide_dma_intr, = SA_INTERRUPT,"IDE-DMA", hwif->hwgroup)) { printk("ide_redwood6: ide_request_irq failed int=3D%d\n", = IDE_DMA_INT); //restore_flags(flags); //return 1; } restore_flags(flags); */ drive->using_dma =3D 1; #ifdef WMODE mtdcr(DCRN_DCRXBCR, 0); mtdcr(DCRN_CICCR, mfdcr(DCRN_CICCR) | 0x00000400); #else /* Configure CIC reg for line mode dma */ mtdcr(DCRN_CICCR, mfdcr(DCRN_CICCR) & ~0x00000400); #endif return 0; } static int ocp_ide_dma_check(ide_drive_t *drive){ printk("got ocp_ide_dma_check\n"); return redwood_config_drive_for_dma(drive); } static void ocp_ide_dma_begin(ide_drive_t *drive){ int i,reading=3D0,length; struct request * const rq =3D HWGROUP(drive)->rq; unsigned long control; if(rq_data_dir (rq) =3D=3D READ) reading =3D 1; printk("got ocp_ide_dma_begin 0x%x\n",mfdcr(DCRN_DMASR)); /* enable DMA */ ppc4xx_enable_dma_interrupt(IDE_DMACH); /*dmastat =3D mfdcr(DCRN_DMASR); mtdcr(DCRN_DMASR,((u32)DMA_CH2_ERR | (u32)DMA_CS2 | (u32)DMA_TS2)); */ mtdcr(DCRN_DMASR,0x22200120); /*Configure CIC reg for line mode DMA*/ #ifdef WMODE mtdcr(DCRN_CICCR,(mfdcr(DCRN_CICCR) | 0x00000400)); #else mtdcr(DCRN_CICCR,(mfdcr(DCRN_CICCR) & ~0x00000400)); #endif if(drive->media !=3D ide_disk) { printk("ocp_ide_dma_begin : Invalid media \n"); return; } if(ppc4xx_get_channel_config(IDE_DMACH,&dma_ch) & DMA_CHANNEL_BUSY){ printk("DMA channel busy \n"); return; } memset(rq->buffer,0,rq->current_nr_sectors*512); if(reading){ =09 dma_cache_inv((unsigned long) rq->buffer, rq->current_nr_sectors * = 512); #ifdef WMODE mtdcr(DCRN_DMASA2,(u32)0x00000000);// set src address for DMA channel = 2 mtdcr(DCRN_DMADA2,(u32)virt_to_bus(rq->buffer));//set dst address for = DMA channel 2 mtdcr(DCRN_DCRXBCR,0x00000000); control =3D 0xE600CB02; #else mtdcr(DCRN_DMASA2,(u32)0xfce00000);// set src address for DMA channel = 2 mtdcr(DCRN_DMADA2,(u32)virt_to_bus(rq->buffer));//set dst address for = DMA channel 2 mtdcr(DCRN_DCRXBCR,0x90000000); control =3D 0xEE602b02; #endif } else { dma_cache_wback_inv((unsigned long) rq->buffer, rq->current_nr_sectors = * 512); #ifdef WMODE mtdcr(DCRN_DMASA2,(u32)0x00000000);// set dst address for DMA channel = 2 mtdcr(DCRN_DMADA2,(u32)virt_to_bus(rq->buffer));// set src address for = DMA channel 2 mtdcr(DCRN_DCRXBCR,0x00000000); control =3D 0xC600CB02; #else mtdcr(DCRN_DMADA2,(u32)0xfce00000);// set dst address for DMA channel = 2 mtdcr(DCRN_DMASA2,(u32)virt_to_bus(rq->buffer));// set src address for = DMA channel 2 mtdcr(DCRN_DCRXBCR,0xB0000000); control =3D 0xcd602b02; #endif } #ifdef WMODE length =3D (rq->current_nr_sectors *512)/2; #else length =3D (rq->current_nr_sectors *512)/16; #endif mtdcr(DCRN_DMACT2,length); /*control =3D mfdcr(DCRN_DMACR2); control |=3D DMA_CIE_ENABLE; Channel Interrupt Enable=20 */ control &=3D ~DMA_CIE_ENABLE; mtdcr(DCRN_DMACR2, control); //ppc4xx_enable_dma_interrupt(IDE_DMACH); =09 printk("DMA addr %x %x count %d dmastat = %x\n",rq->buffer,virt_to_bus(rq->buffer),rq->current_nr_sectors,dmastat);= /* wait for dma to complete (channel 2 terminal count) */ for (i =3D 0; i < 500000; i++) { if(i%1000 =3D=3D 0) dmastat =3D mfdcr(DCRN_DMASR); if (dmastat & DMA_CS2) break; } printk("DMA complete stat %x %d\n",dmastat,i); mtdcr(DCRN_DCRXBCR,0x00000000); mtdcr(DCRN_DMACR2, 0x00000000); drive->waiting_for_dma =3D 0; //dmastat =3D 0; } static int ocp_ide_dma_end(ide_drive_t *drive){ unsigned int tmp =3D mfdcr(DCRN_DMASR); mtdcr (DCRN_UIC_SR(UIC0),(0x80000000ul >> IDE_DMA_INT)); mtdcr(DCRN_DMASR,0x22200120); dmastat =3D mfdcr(DCRN_DMASR); printk("got ocp_ide_dma_end %x %x\n",dmastat,tmp); drive->waiting_for_dma =3D 0; /* disable DMA */ //ppc4xx_disable_dma_interrupt(IDE_DMACH); return 0; } static int ocp_ide_dma_test_irq(ide_drive_t *drive){ printk("got ocp_ide_dma_test_irq\n"); return 1; /* returns 1 if dma irq issued, 0 otherwise */ } static int ocp_ide_dma_verbose(ide_drive_t *drive){ printk("got ocp_ide_dma_verbose\n"); return 1; } static int ocp_ide_dma_lostirq(ide_drive_t *drive){ printk("got ocp_ide_dma_lostirq\n"); return 1; } static int ocp_ide_dma_timeout(ide_drive_t *drive){ printk("got ocp_ide_dma_timeout\n"); return 1; } static void ocp_dma_exec_cmd (ide_drive_t * const drive, u8 command){ ide_hwif_t *hwif =3D HWIF(drive); //hwif->OUTBSYNC(drive,command, IDE_COMMAND_REG); //printk("ide_dma_exec_cmd %x\n",command); ide_execute_command (drive, command,&ide_dma_intr, 2*WAIT_CMD, NULL); } static int ocp_ide_dma_setup(ide_drive_t * const drive){ ide_hwif_t * const hwif =3D HWIF(drive); struct request * const rq =3D HWGROUP(drive)->rq; printk("got ocp_ide_dma_setup \n"); /*if(rq->current_nr_sectors < 2){ printk("request for less no of sectors %d\n",rq->current_nr_sectors); ide_map_sg(drive,rq);drive->waiting_for_dma=3D0;=20 return 1; }*/ drive->waiting_for_dma =3D 1; return 0; }=09 static void ocp_ide_setup_dma (ide_hwif_t * const hwif) { printk("ocp_ide_setup_dma \n"); hwif->dma =3D IDE_DMACH; #ifdef WMODE /*Word Mode psc(11-12)=3D00,pwc(13-18)=3D000110, phc(19-21)=3D010, = 22=3D1, 30=3D1 ---- 0xCB02*/ dma_ch.mode =3DTM_S_MM; /* xfer from peripheral to mem */ dma_ch.td =3D DMA_TD; dma_ch.buffer_enable =3D FALSE; dma_ch.tce_enable =3D FALSE; dma_ch.etd_output =3D FALSE; dma_ch.pce =3D FALSE; dma_ch.pl =3D EXTERNAL_PERIPHERAL; /* no op */ dma_ch.pwidth =3D PW_16; dma_ch.dai =3D TRUE; dma_ch.sai =3D FALSE; dma_ch.psc =3D 0; /* set the max setup cycles */ dma_ch.pwc =3D 6; /* set the max wait cycles */ dma_ch.phc =3D 2; /* set the max hold cycles */ dma_ch.cp =3D PRIORITY_LOW; dma_ch.int_enable =3D FALSE; dma_ch.ch_enable =3D FALSE; /* No chaining */ dma_ch.tcd_disable =3D TRUE; /* No chaining */ #else /*Line Mode psc(11-12)=3D00,pwc(13-18)=3D000001, phc(19-21)=3D010, = 22=3D1, 30=3D1 ---- 0x2B02*/ dma_ch.mode =3DDMA_MODE_MM_DEVATSRC; /* xfer from peripheral to mem = */ dma_ch.td =3D DMA_TD; dma_ch.buffer_enable =3D FALSE; dma_ch.tce_enable =3D FALSE; dma_ch.etd_output =3D FALSE; dma_ch.pce =3D FALSE; dma_ch.pl =3D EXTERNAL_PERIPHERAL; /* no op */ dma_ch.pwidth =3D PW_64; /* Line mode on stbs */ dma_ch.dai =3D TRUE; dma_ch.sai =3D FALSE; dma_ch.psc =3D 0; /* set the max setup cycles */ dma_ch.pwc =3D 1; /* set the max wait cycles */ dma_ch.phc =3D 2; /* set the max hold cycles */ dma_ch.cp =3D PRIORITY_LOW; dma_ch.int_enable =3D FALSE; dma_ch.ch_enable =3D FALSE; /* No chaining */ dma_ch.tcd_disable =3D TRUE; /* No chaining */ #endif if (ppc4xx_init_dma_channel(IDE_DMACH, &dma_ch) !=3D DMA_STATUS_GOOD){ printk("ppc4xx_init_dma_channel failed\n"); return -EBUSY; } //ppc4xx_disable_dma_interrupt(IDE_DMACH); /*init CIC control register to enable IDE interface PIO mode*/ mtdcr(DCRN_CICCR,(mfdcr(DCRN_CICCR) & 0xffff7bff) | 0x00000003); mtdcr(DCRN_DMACR2, 0); ppc4xx_clr_dma_status(IDE_DMACH); /* init CIC select2 reg to connect external DMA port 3 to internal * DMA channel 2 */ mtdcr(DCRN_DMAS2,(mfdcr(DCRN_DMAS2) & 0xfffffff0) | 0x00000002); hwif->autodma =3D 1;hwif->udma_four=3D0; hwif->drives[0].autotune =3D hwif->drives[1].autotune =3D = IDE_TUNE_AUTO; hwif->drives[0].autodma =3D hwif->drives[1].autodma =3D = hwif->autodma; hwif->atapi_dma =3D 0; hwif->ultra_mask =3D hwif->udma_four ? 0x1f : 0x07; hwif->mwdma_mask =3D 0x07; hwif->swdma_mask =3D 0x00; /* set everything to something !=3D NULL */ hwif->ide_dma_host_off =3D &ocp_ide_dma_off_quietly; hwif->ide_dma_host_on =3D &ocp_ide_dma_on; hwif->ide_dma_check =3D &ocp_ide_dma_check; hwif->ide_dma_off_quietly =3D &ocp_ide_dma_off_quietly; hwif->ide_dma_on =3D &ocp_ide_dma_on; hwif->dma_setup =3D &ocp_ide_dma_setup; hwif->dma_exec_cmd =3D &ocp_dma_exec_cmd; hwif->dma_start =3D &ocp_ide_dma_begin; hwif->ide_dma_end =3D &ocp_ide_dma_end; hwif->ide_dma_test_irq =3D &ocp_ide_dma_test_irq; hwif->ide_dma_lostirq =3D &ocp_ide_dma_lostirq; hwif->ide_dma_timeout =3D &ocp_ide_dma_timeout; } =09 static int __init stb025xx_ide_probe (struct ocp_device * const ocp) { int err; unsigned int uicdcr; volatile unsigned long ide_regs; unsigned long flags,ioaddr; ide_hwif_t * const hwif =3D &ide_hwifs[0]; unsigned char * ip; int i; printk ("IBM STB025xx OCP IDE driver version %s %x \n", = IDEVR,ocp->def->paddr); if (!request_region(REDWOOD_IDE_CMD, 0x10, "IDE")) return -EBUSY; if (!request_region(REDWOOD_IDE_CTRL, 2, "IDE")) { release_region(REDWOOD_IDE_CMD, 0x10); return -EBUSY; } ide_regs =3D ioaddr =3D (unsigned long) ioremap(REDWOOD_IDE_CMD, 0x10); for (i =3D IDE_DATA_OFFSET; i <=3D IDE_STATUS_OFFSET; i++) { hwif->io_ports[i] =3D ioaddr; ioaddr +=3D 2; } hwif->io_ports[IDE_CONTROL_OFFSET] =3D (unsigned long) ioremap(REDWOOD_IDE_CTRL, 2); ocp_force_power_on (ocp); =09 /* initialize */ hwif->gendev.parent =3D &ocp->dev; ocp_set_drvdata (ocp, hwif); /* setup MMIO ops */ default_hwif_mmiops (hwif); /* tell common code _not_ to mess with resources */ hwif->mmio =3D 2; ide_set_hwifdata (hwif, (void *) ide_regs); =09 hwif->chipset =3D ide_generic; hwif->irq =3D IDE0_IRQ; hwif->noprobe =3D 0; hwif->hold =3D 1; hwif->udma_four =3D 0; hwif->tuneproc =3D &ocp_ide_tune_drive; hwif->speedproc =3D &ocp_ide_tune_chipset; hwif->drives[0].io_32bit =3D hwif->drives[1].io_32bit =3D 0; hwif->drives[0].unmask =3D hwif->drives[1].unmask =3D 1; pio_mode[0] =3D pio_mode[1] =3D -1; =09 ibm25xx_ide_spinup(0); ocp_ide_setup_dma (hwif); probe_hwif_init (hwif); create_proc_ide_interfaces (); printk("IDE probe finished \n"); return 0; } static void stb025xx_ide_remove (struct ocp_device * const ocp) { ide_hwif_t * const hwif =3D ocp_get_drvdata (ocp); hwif->dmatable_cpu =3D NULL; hwif->dmatable_dma =3D 0; ide_unregister (hwif->index); ocp_force_power_off (ocp); } static struct ocp_device_id stb025xx_ide_ids[] __devinitdata =3D { { .vendor =3D OCP_VENDOR_IBM, .function =3D OCP_FUNC_IDE}, { .vendor =3D OCP_VENDOR_INVALID } }; MODULE_DEVICE_TABLE (ocp, stb04xxx_ide_ids); static struct ocp_driver stb025xx_ide_driver =3D { .name =3D "ide", .id_table =3D stb025xx_ide_ids, .probe =3D stb025xx_ide_probe, .remove =3D __devexit_p (stb025xx_ide_remove), #if defined(CONFIG_PM) .suspend =3D NULL, .resume =3D NULL, #endif }; int __init stb025xx_ide_init (void) { printk("inside stb04xxx_ide_init \n"); return ocp_register_driver (&stb025xx_ide_driver); } static void __exit stb025xx_ide_exit (void) { printk("inside stb04xxx_ide_exit \n"); ocp_unregister_driver (&stb025xx_ide_driver); } /* needs to be called after ide has been initialized */ late_initcall (stb025xx_ide_init); module_exit (stb025xx_ide_exit); MODULE_LICENSE ("GPL"); MODULE_AUTHOR ("Akhilesh Soni "); MODULE_DESCRIPTION ("driver for IBM OCP IDE on STB025xx"); ------=_NextPart_000_001F_01C6D753.6EC1CD50--