How 8349mITX's compact flash is wired? If it is wired using 8 bit data bus line,
without another patch, data transfer can't be done.
Looking at logs Sam Sparks provided (without irq):
ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4)
it seems data transfer failed.
I have a 8 bit data transfer mode dirty hack on pata_platform. I am waiting for
the no irq handling patch goes in and then make my patch more generic.
Anton Vorontsov wrote:
On Thu, Oct 09, 2008 at 08:52:09AM -0700, Jeff Borlin wrote:
I have taken over this effort to get Compact Flash working on the 8349mITX
board and am running into these same issues. I can get uBoot to list the
contents of a CF card,
U-Boot doesn't use interrupts.
but am running into a couple problems through the
kernel. There appears to be an IRQ problem and a general communication
problem with the CF card, possibly related. Note that I am very new to
Linux so please don't assume obvious things are correct
I am using the latest from /linux/kernel/git/benh/powerpc.git, and created
my dtb from: arch/powerpc/dts/mpc8349emitx.dts.
Any ideas on what I could try or look into next with either issue?
boot info:
[...]
[...]
This happens just before the PATA information is printed. I'm not
libata expert; and from the brief look I don't see where libata
clears any pending "unexpected" irqs. Just a guesswork,
could you try this patch?
diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index 8f65ad6..3b7c79d 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
+#include <linux/io.h>
#include <scsi/scsi_host.h>
#include <linux/ata.h>
#include <linux/libata.h>
@@ -171,6 +172,8 @@ int __devinit __pata_platform_probe(struct device *dev,
pata_platform_setup_port(&ap->ioaddr, ioport_shift);
+ ioread8(ap->ioaddr.status_addr);
+
ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
(unsigned long long)io_res->start,
(unsigned long long)ctl_res->start);
irq 23: nobody cared (try booting with the "irqpoll" option)
Call Trace:
[cec29a30] [c00089a4] 0xc00089a4 (unreliable)
[cec29a60] [c00467d8] 0xc00467d8
[...]
Disabling IRQ #23
scsi4 : pata_platform
ata5: PATA max PIO6 mmio cmd 0xf0000000 ctl 0xf000020c irq 23
ata5.00: CFA: SanDisk SDCFJ-512, HDX 3.13, max MWDMA2
ata5.00: 1000944 sectors, multi 0: LBA
ata5.00: configured for PIO
Can you check if the CF will work w/o IRQs? To try it:
1. open the arch/powerpc/dts/mpc8349emitx.dts file, find the pata node:
[EMAIL PROTECTED],0 {
compatible = "fsl,mpc8349emitx-pata", "ata-generic";
reg = <0x3 0x0 0x10 0x3 0x20c 0x4>;
reg-shift = <1>;
pio-mode = <6>;
interrupts = <23 0x8>;
interrupt-parent = <&ipic>;
};
2. delete interrupts = <>; and interrupt-parent = <>; lines.
3. recompile the dts to dtb.
4. Apply this patch to the kernel http://lkml.org/lkml/2008/10/6/176
5. And try to boot the patched kernel using the re-compiled dtb file.
scsi 4:0:0:0: Direct-Access ATA SanDisk SDCFJ-51 HDX PQ: 0 ANSI: 5
sd 4:0:0:0: [sda] 1000944 512-byte hardware sectors (512 MB)
sd 4:0:0:0: [sda] Write Protect is off
sd 4:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't
support DPO or FUA
sd 4:0:0:0: [sda] 1000944 512-byte hardware sectors (512 MB)
sd 4:0:0:0: [sda] Write Protect is off
sd 4:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't
support DPO or FUA
sda:<3>ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata5.00: cmd 20/00:08:00:00:00/00:00:00:00:00/e0 tag 0 pio 4096 in
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata5.00: status: { DRDY }
ata5: soft resetting link
ata5.00: configured for PIO
ata5: EH complete
ata5.00: limiting speed to UDMA7:PIO5
ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata5.00: cmd 20/00:08:00:00:00/00:00:00:00:00/e0 tag 0 pio 4096 in
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata5.00: status: { DRDY }
ata5: soft resetting link
ata5.00: configured for PIO
ata5: EH complete
ata5.00: limiting speed to PIO0
[...]
Thanks,
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