From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lasse Makholm Subject: sata_sx4 vs. Promise SX4060 Date: Thu, 08 May 2008 21:30:02 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from main.gmane.org ([80.91.229.2]:37924 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752741AbYEHTfF (ORCPT ); Thu, 8 May 2008 15:35:05 -0400 Received: from root by ciao.gmane.org with local (Exim 4.43) id 1JuBtO-0004rW-UE for linux-ide@vger.kernel.org; Thu, 08 May 2008 19:35:02 +0000 Received: from d83-183-214-201.cust.tele2.se ([83.183.214.201]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 08 May 2008 19:35:02 +0000 Received: from lasse.makholm by d83-183-214-201.cust.tele2.se with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 08 May 2008 19:35:02 +0000 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Hi, I know it's been brought up here before, at least a few years ago (http://search.gmane.org/?query=sx4060&group=gmane.linux.ide) but here goes anyway... I'm one of those semi-happy owners of a Promise SX4060 PATA RAID controller which is apparently only supported for some 2.4-something kernels... Obviously I would a lot more happy with a 2.6 driver... :-) So I've been googling high and low without much result, except finding out that the SX4060 is based on the same chip (the PDC20621) as the SATA 150 SX4, leading me to believe that the sata_sx4 driver is probably the best bet for getting the SX4060 working under 2.6 kernels... Also, this comment in sata_sx4.c seems to support this suspicion: The SX4 behaves like a PATA chip, with no SATA controls or knowledge whatsoever, leading to the presumption that PATA<->SATA bridges exist on SX4 boards, external to the PDC20621 chip itself. All documentation I've been able to find on the devices indicate that they are very similar... I tried hacking the driver to recognize the SX4060 board number, essentially the same thing as described here: http://article.gmane.org/gmane.linux.ide/5435 ...with similar results. The controller is recognized and it also recognizes the attached drives, but it seems to have trouble initializing the DIMM and with the ATA_SET_FEATURES command... With ATA_DEBUG and ATA_DEBUG_VERBOSE, I get something like this (I have the full log if someone wants to see it): [ 271.122187] pdc20621_dimm_init: Time Counter Register (0x44): 0xf0a6fb86 [ 271.122250] pdc20621_dimm_init: Num counters 0xf590479 (257492089) [ 271.122309] pdc20621_dimm_init: 10 * Internal clk = 0x35a (858) [ 271.122369] pdc20621_dimm_init: 10 * Internal clk * 33 = 0x6e9a (28314) [ 271.122428] pdc20621_dimm_init: PLL F Param: 0x2f (47) [ 271.122486] pdc20621_dimm_init: pci_status: 0x8a2f1824 [ 271.122721] pdc20621_dimm_init: Local DIMM Speed = 100 [ 271.124883] pdc20621_dimm_init: Local DIMM Size = 64MB [ 271.125118] Local DIMM ECC Enabled [ 271.226153] 0, 0, [ 271.226220] 55, aa, Promise Not Yet Defined 1.1098 [ 271.226291] 55, aa, Promise Not Yet Defined 1.1098 [ 271.226524] pdc20621_dimm_init: Start ECC initialization [ 281.972847] BUG: soft lockup - CPU#0 stuck for 11s! [modprobe:6153] Register and stack dump here... [ 293.775043] BUG: soft lockup - CPU#0 stuck for 11s! [modprobe:6153] Register and stack dump here... [ 305.581239] BUG: soft lockup - CPU#0 stuck for 11s! [modprobe:6153] Register and stack dump here... [ 312.567607] pdc20621_dimm_init: Finish ECC initialization Lots of noise follows... [ 312.768567] ata5: PATA max UDMA/44 mmio m1048576@0xfe900000 dimm m32768@0xfe800000 port 0xfe900200 irq 17 [ 312.768571] ata6: PATA max UDMA/44 mmio m1048576@0xfe900000 dimm m32768@0xfe800000 port 0xfe900280 irq 17 [ 312.768574] ata7: PATA max UDMA/44 mmio m1048576@0xfe900000 dimm m32768@0xfe800000 port 0xfe900300 irq 17 [ 312.768577] ata8: PATA max UDMA/44 mmio m1048576@0xfe900000 dimm m32768@0xfe800000 port 0xfe900380 irq 17 More noise follows... [ 342.918886] ata_port_flush_task: ENTER [ 342.918947] ata5: ata_port_flush_task: EXIT [ 342.918959] ata5.00: qc timeout (cmd 0xef) [ 342.918962] ata_dev_set_xfermode: EXIT, err_mask=4 [ 342.919021] ata5.00: failed to set xfermode (err_mask=0x4) Even more noise follows... [ 373.068199] ata5.00: failed to set xfermode (err_mask=0x4) [ 373.068260] ata5.00: limiting speed to UDMA/44:PIO3 [ 373.068263] pdc_20621_phy_reset: ENTER [ 373.068320] ata_bus_reset: ENTER, host 5, port 0 [ 373.068388] ata_bus_softreset: ata5: bus reset via SRST [ 373.224003] ata_dev_classify: found ATA device by sig [ 373.224068] ata_bus_reset: EXIT [ 373.224125] ata5.00: ata_dev_read_id: ENTER [ 373.224127] ata5: ata_dev_select: ENTER, device 0, wait 1 [ 373.224157] ata5: ata_dev_select: ENTER, device 0, wait 1 [ 373.224195] ata_tf_load: feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 [ 373.224253] ata_tf_load: device 0xA0 [ 373.224321] ata_exec_command: ata5: cmd 0xEC [ 373.231994] ata_hsm_move: ata5: protocol 2 task_state 2 (dev_stat 0x58) [ 373.232057] ata_pio_sector: data read [ 373.232419] ata_hsm_move: ata5: protocol 2 task_state 3 (dev_stat 0x50) [ 373.232479] ata_hsm_move: ata5: dev 0 command complete, drv_stat 0x50 [ 373.232562] ata_port_flush_task: ENTER [ 373.232618] ata5: ata_port_flush_task: EXIT [ 373.232622] ata5.00: ata_dev_configure: ENTER [ 373.232634] pdc20621_nodata_prep: ata5: ENTER [ 373.232692] pdc20621_ata_pkt: ENTER, dimm_sg == 0x200180, 2097536 [ 373.232760] pdc20621_nodata_prep: ata pkt buf ofs 282, mmio copied [ 373.232819] pdc20621_packet_start: ata5: ENTER [ 373.232879] pdc20621_packet_start: submitted ofs 0x200100 (2097408), seq 1 [ 373.232987] pdc20621_interrupt: ENTER [ 373.233045] pdc20621_interrupt: mask == 0x2 [ 373.233103] pdc20621_interrupt: seq 1, port_no 0, ap de81c000, tmp 2 [ 373.233162] pdc20621_host_intr: ENTER [ 373.233230] pdc20621_host_intr: BUS_NODATA (drv_stat 0x50) [ 373.233297] pdc20621_interrupt: seq 2, port_no 1, ap de820000, tmp 0 [ 373.233357] pdc20621_interrupt: seq 3, port_no 2, ap de824000, tmp 0 [ 373.233416] pdc20621_interrupt: seq 4, port_no 3, ap de828000, tmp 0 [ 373.233475] pdc20621_interrupt: seq 5, port_no 0, ap de81c000, tmp 0 [ 373.233535] pdc20621_interrupt: seq 6, port_no 1, ap de820000, tmp 0 [ 373.233594] pdc20621_interrupt: seq 7, port_no 2, ap de824000, tmp 0 [ 373.233654] pdc20621_interrupt: seq 8, port_no 3, ap de828000, tmp 0 [ 373.233713] pdc20621_interrupt: mask == 0x2 [ 373.233769] pdc20621_interrupt: EXIT [ 373.233828] ata_port_flush_task: ENTER [ 373.233886] ata5: ata_port_flush_task: EXIT [ 373.233890] ata5.00: ata_dev_configure: cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003 88:087f [ 373.233894] ata_dump_id: 49==0x2f00 53==0x0007 63==0x0007 64==0x0003 75==0x0000 [ 373.233964] ata_dump_id: 80==0x00fe 81==0x001e 82==0x7c6b 83==0x7b09 84==0x4003 [ 373.234033] ata_dump_id: 88==0x087f 93==0x600b [ 373.234092] ata5.00: ATA-7: Maxtor 6Y080P0, YAR41BW0, max UDMA/133 [ 373.234095] ata5.00: 160086528 sectors, multi 0: LBA [ 373.234105] ata5.00: ata_dev_configure: EXIT, drv_stat = 0x50 [ 373.234110] ata_dev_set_xfermode: set features - xfer mode [ 373.234168] pdc20621_nodata_prep: ata5: ENTER [ 373.234226] pdc20621_ata_pkt: ENTER, dimm_sg == 0x200180, 2097536 [ 373.234292] pdc20621_nodata_prep: ata pkt buf ofs 282, mmio copied [ 373.234351] pdc20621_packet_start: ata5: ENTER [ 373.234411] pdc20621_packet_start: submitted ofs 0x200100 (2097408), seq 1 [ 373.234520] pdc20621_interrupt: ENTER [ 373.234577] pdc20621_interrupt: mask == 0x2 [ 373.234634] pdc20621_interrupt: seq 1, port_no 0, ap de81c000, tmp 2 [ 373.234694] pdc20621_interrupt: seq 2, port_no 1, ap de820000, tmp 0 [ 373.234754] pdc20621_interrupt: seq 3, port_no 2, ap de824000, tmp 0 [ 373.234813] pdc20621_interrupt: seq 4, port_no 3, ap de828000, tmp 0 [ 373.234872] pdc20621_interrupt: seq 5, port_no 0, ap de81c000, tmp 0 [ 373.234932] pdc20621_interrupt: seq 6, port_no 1, ap de820000, tmp 0 [ 373.234991] pdc20621_interrupt: seq 7, port_no 2, ap de824000, tmp 0 [ 373.235051] pdc20621_interrupt: seq 8, port_no 3, ap de828000, tmp 0 [ 373.235110] pdc20621_interrupt: mask == 0x2 [ 373.235166] pdc20621_interrupt: EXIT Above stuff seems to happen a couple of times... [ 403.217240] ata_port_flush_task: ENTER [ 403.217301] ata5: ata_port_flush_task: EXIT [ 403.217313] ata5.00: qc timeout (cmd 0xef) [ 403.217316] ata_dev_set_xfermode: EXIT, err_mask=4 [ 403.217375] ata5.00: failed to set xfermode (err_mask=0x4) [ 403.217434] ata5.00: disabled It finally bombs... Same thing happens for all 4 ports... While I do know my way around Linux, C and a debugger, I'm still pretty blank when it comes ATA stuff... So any tips on where to go from here would highly appreciated... Some questions: * I guess the soft lockups during DIMM init are suspicious... Is it possible that the driver got the memory map wrong? The detected 64 MB is correct... The SX4060 BIOS lists this information: Installed Memory Address: FE800000 Size: 64M Controller IRQ: 11 ATA IO Address: E000 XOR and HDMA IO Address: ED00 Sequence Control IO Address: EC00 Flash and SRAM Memory Address: FE900000 But I don't know how to relate this to what's in the driver source... * Is it a reasonable assumption that SX4060 support could be achieved with fairly small changes to the sata_sx4 driver? (I realize that knowing exactly /what/ changes are needed is an entirely different matter...) * Is there any point in contacting Promise about information on this device? Or would I just be wasting my time? * Is it a correct assumption that the sata_sx4 driver knows nothing the various array configurations and that it will always just see 4 independent drives, regardless of what arrays have been configured in the BIOS? * Also, is there any (easy) way to choke debug output from some ATA devices, while keeping it for others? Apart from grep... :-) * Would there be any useful information to gather from running the card with the Promise drivers under Windows or a 2.4 kernel? I'd be happy to put in some time and effort in moving this forward but I probably won't make much progress need some pointers from some ATA-gurus... /Lasse