Most of these are SCSI issues and the last one makes -test10 hard to debug.
* MESH gets SLAB errors during startup, CDROM eject
* "mac53c94: module license 'unspecified' taints kernel."
* "53C94 did not call scsi_unregister" [sorry, should have filed bug report]
* 'swim3.c' doesn't compile properly
* Switching from X to text console ('controlfb' frame buffer) loses video
sync.
The 53C94 problems probably aren't hard to fix. For the floppy code (that
is, 'swim3.c'), 'benh' has a version of 'swim3' which may only need further
testing. The MESH issue looks like a buffer alignment problem, and worked
without complaint in the 2.4 kernels.
The video mode problem is a real nuisance and is the biggest reason i'm not
doing more than intermittent testing of 2.6.0/PPC.
-- JM
P.S. I came across a large pile of floppies during a massive cleanup (why
i've been so busy) and i can run some more tests of the 'swim3' code after
the Thanksgiving break.
On Wed, 2003-11-26 at 11:55, John Mock wrote:
> Most of these are SCSI issues and the last one makes -test10 hard to debug.
>
> * MESH gets SLAB errors during startup, CDROM eject
Those are still the same good old issues, you have to disable SLAB
debugging unfortunately, at least until there is a better fix, but
so far there isn't.
> * "mac53c94: module license 'unspecified' taints kernel."
Ok.
> * "53C94 did not call scsi_unregister" [sorry, should have filed bug report]
Ok.
> * 'swim3.c' doesn't compile properly
Yup, known. My 8500 is sitll on the boat from france and I had my
time lately taken 200% by the G5 port.
> * Switching from X to text console ('controlfb' frame buffer) loses video
> sync.
Known.
> The 53C94 problems probably aren't hard to fix. For the floppy code (that
> is, 'swim3.c'), 'benh' has a version of 'swim3' which may only need further
> testing. The MESH issue looks like a buffer alignment problem, and worked
> without complaint in the 2.4 kernels.
It's a problem. The SCSI stack is passing us unaligned buffers when slab
debugging is enabled, thus triggering a HW issue with those unaligned
buffers (the chip writes before the beginning of the buffer)
> The video mode problem is a real nuisance and is the biggest reason i'm not
> doing more than intermittent testing of 2.6.0/PPC.
I'd appreciate if you could track it down as I won't have access to the
8500 for a few weeks still.
> -- JM
>
>
> P.S. I came across a large pile of floppies during a massive cleanup (why
> i've been so busy) and i can run some more tests of the 'swim3' code after
> the Thanksgiving break
Ok.
Ben.
Thanks for the clues. I think the attached patch fixes most of the issues
with 'mac53c94.c' (please check the license before passing upstream); and
by forcing a 16 byte boundary in the slab debug area, also fixes the MESH
problems (including CDROM eject, which my earlier kludgy patch didn't deal
with). Both get a couple of compilation warnings (see attachment) which
may need attention.
I spent alot of time on the 'controlfb' driver and haven't gotten very far
with it. What i can tell you about this is that control_set_hardware()
gets initially called with 'cmode' of 0, then gets set to 'cmode' of 2.
If i invoke X, when it comes back from X, it has 'cmode' of 1; that is to
say, the video mode information doesn't seem to be preserved. By supplying
different values of '-depth' to X, i can change the 'cmode' of the frame
buffer when it returns. [See attachment: The first set are initialization,
the second involves X sets parameters several times before deciding on a
setting, and the last is attempting to restore the frame buffer settings.]
The other hint is that 'fbset' to change screen depths does not update the
screen properly (if at all).
I hope this helps and i'll do more testing of 'swim3' when i get a chance
to retrieve some of those old floppies from storage. Please let me know
what you'd like me to try next.
-- JM
Attachments:
Patches for SCSI issues on PowerMac 8500
SCSI compilation warnings for same
'dmesg' extracts on 'controlfb' screen problem.
-------------------------------------------------------------------------------
--- ./drivers/scsi/mac53c94.c.orig 2003-11-23 17:31:08.000000000 -0800
+++ ./drivers/scsi/mac53c94.c 2003-11-26 09:50:17.000000000 -0800
@@ -123,9 +123,9 @@
printk(KERN_ERR "mac53c94: ioremap failed for %s\n",
node->full_name);
if (state->dma != NULL)
- iounmap(state->dma);
+ iounmap((void *) state->dma);
if (state->regs != NULL)
- iounmap(state->regs);
+ iounmap((void *) state->regs);
scsi_unregister(host);
break;
}
@@ -161,8 +161,8 @@
printk(KERN_ERR "mac53C94: can't get irq %d for %s\n",
state->intr, node->full_name);
err_cleanup:
- iounmap(state->dma);
- iounmap(state->regs);
+ iounmap((void *) state->dma);
+ iounmap((void *) state->regs);
scsi_unregister(host);
break;
}
@@ -187,6 +187,7 @@
iounmap((void *) fp->dma);
kfree(fp->dma_cmd_space);
free_irq(fp->intr, fp);
+ scsi_unregister(host);
return 0;
}
@@ -630,3 +631,5 @@
};
#include "scsi_module.c"
+
+MODULE_LICENSE("GPL");
--- ./mm/slab.c.orig 2003-11-23 17:32:42.000000000 -0800
+++ ./mm/slab.c 2003-11-26 10:07:04.000000000 -0800
@@ -1106,6 +1106,11 @@
/* add space for red zone words */
cachep->dbghead += BYTES_PER_WORD;
size += 2*BYTES_PER_WORD;
+#ifdef CONFIG_SCSI_MESH
+ /* MESH hardware has buffer alignment issues */
+ size += (0x10 - cachep->dbghead) & 0xf;
+ cachep->dbghead += (0x10 - cachep->dbghead) & 0xf;
+#endif
}
if (flags & SLAB_STORE_USER) {
flags &= ~SLAB_HWCACHE_ALIGN;
-------------------------------------------------------------------------------
CC drivers/scsi/mesh.o
drivers/scsi/mesh.c: In function `data_goes_out':
drivers/scsi/mesh.c:1913: warning: enumeration value `DMA_BIDIRECTIONAL' not handled in switch
drivers/scsi/mesh.c:1913: warning: enumeration value `DMA_NONE' not handled in switch
LD drivers/scsi/built-in.o
CC [M] drivers/scsi/mac53c94.o
drivers/scsi/mac53c94.c: In function `data_goes_out':
drivers/scsi/mac53c94.c:577: warning: enumeration value `DMA_BIDIRECTIONAL' not handled in switch
drivers/scsi/mac53c94.c:577: warning: enumeration value `DMA_NONE' not handled in switch
LD drivers/built-in.o
-------------------------------------------------------------------------------
...
Nov 26 10:41:40 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xc054bdd8), cmode 0
Nov 26 10:41:40 penngrove kernel: regs[]: 063d 063c 003c 0020 0004 063e 0640 0086
Nov 26 10:41:40 penngrove kernel: 028e 0287 0087 002f 028f 0018 0148 0260
Nov 26 10:41:40 penngrove kernel: Call trace:
Nov 26 10:41:40 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:41:40 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:41:40 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:41:40 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:41:40 penngrove kernel: [c022b014] init_control+0xf8/0x264
Nov 26 10:41:40 penngrove kernel: [c022b558] control_of_init+0x1f0/0x238
Nov 26 10:41:40 penngrove kernel: [c022b1a4] control_init+0x24/0x48
Nov 26 10:41:40 penngrove kernel: [c022aa30] fbmem_init+0xf4/0x114
Nov 26 10:41:40 penngrove kernel: [c0227be0] chr_dev_init+0x3c/0x64
Nov 26 10:41:40 penngrove kernel: [c02145dc] do_initcalls+0x54/0xe0
Nov 26 10:41:40 penngrove kernel: [c0003958] init+0x1c/0xc0
Nov 26 10:41:40 penngrove kernel: [c000a970] kernel_thread+0x44/0x60
Nov 26 10:41:40 penngrove kernel: fb0: control display adapter
Nov 26 10:41:40 penngrove kernel: MacOS display is /chaos/control
Nov 26 10:41:40 penngrove kernel: Thermal assist unit using timers, shrink_timer: 200 jiffies
Nov 26 10:41:40 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xc054be68), cmode 2
Nov 26 10:41:40 penngrove kernel: regs[]: 063d 063c 003c 0020 0004 063e 0640 0086
Nov 26 10:41:40 penngrove kernel: 028e 0287 0087 002f 028f 0018 0148 0260
Nov 26 10:41:40 penngrove kernel: Call trace:
Nov 26 10:41:40 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:41:40 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:41:40 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:41:40 penngrove kernel: [c00e0660] fbcon_startup+0x210/0x2cc
Nov 26 10:41:40 penngrove kernel: [c00b9c20] take_over_console+0x38/0x1ec
Nov 26 10:41:40 penngrove kernel: [c022a56c] fb_console_init+0x44/0x5c
Nov 26 10:41:40 penngrove kernel: [c02289d8] vty_init+0xcc/0x100
Nov 26 10:41:40 penngrove kernel: [c022808c] tty_init+0x240/0x258
Nov 26 10:41:40 penngrove kernel: [c02145dc] do_initcalls+0x54/0xe0
Nov 26 10:41:40 penngrove kernel: [c0003958] init+0x1c/0xc0
Nov 26 10:41:40 penngrove kernel: [c000a970] kernel_thread+0x44/0x60
Nov 26 10:41:40 penngrove kernel: Console: switching to colour frame buffer device 128x48
...
Nov 26 10:43:35 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xcaec9d18), cmode 2
Nov 26 10:43:35 penngrove kernel: regs[]: 065c 064c 004c 0028 0004 066c 066e 00a2
Nov 26 10:43:35 penngrove kernel: 02a6 02a3 00a3 003b 02a7 001e 0154 026c
Nov 26 10:43:35 penngrove kernel: Call trace:
Nov 26 10:43:35 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:43:35 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:43:35 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:43:35 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:43:35 penngrove kernel: [c00e513c] fb_ioctl+0x228/0x5a4
Nov 26 10:43:35 penngrove kernel: [c0067c9c] sys_ioctl+0xdc/0x2f4
Nov 26 10:43:35 penngrove kernel: [c00075dc] ret_from_syscall+0x0/0x44
Nov 26 10:43:35 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xcaec9d18), cmode 2
Nov 26 10:43:35 penngrove kernel: regs[]: 0570 0570 0030 0019 0002 0570 0572 0082
Nov 26 10:43:35 penngrove kernel: 0262 0243 0083 0031 0263 0019 0132 0232
Nov 26 10:43:35 penngrove kernel: Call trace:
Nov 26 10:43:35 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:43:35 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:43:35 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:43:35 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:43:35 penngrove kernel: [c00e513c] fb_ioctl+0x228/0x5a4
Nov 26 10:43:35 penngrove kernel: [c0067c9c] sys_ioctl+0xdc/0x2f4
Nov 26 10:43:35 penngrove kernel: [c00075dc] ret_from_syscall+0x0/0x44
Nov 26 10:43:35 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xcaec9d18), cmode 2
Nov 26 10:43:35 penngrove kernel: regs[]: 04df 04de 002e 0018 0002 04e0 04e2 0062
Nov 26 10:43:35 penngrove kernel: 01fe 01f3 0063 0023 01ff 0012 0100 01dc
Nov 26 10:43:35 penngrove kernel: Call trace:
Nov 26 10:43:35 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:43:35 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:43:35 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:43:35 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:43:35 penngrove kernel: [c00e513c] fb_ioctl+0x228/0x5a4
Nov 26 10:43:35 penngrove kernel: [c0067c9c] sys_ioctl+0xdc/0x2f4
Nov 26 10:43:35 penngrove kernel: [c00075dc] ret_from_syscall+0x0/0x44
Nov 26 10:43:35 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xcaec9d18), cmode 2
Nov 26 10:43:35 penngrove kernel: regs[]: 040e 0404 0044 0023 0002 0418 041a 0046
Nov 26 10:43:35 penngrove kernel: 018e 0187 0047 002f 018f 0018 00c8 0160
Nov 26 10:43:35 penngrove kernel: Call trace:
Nov 26 10:43:35 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:43:35 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:43:35 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:43:35 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:43:35 penngrove kernel: [c00e513c] fb_ioctl+0x228/0x5a4
Nov 26 10:43:35 penngrove kernel: [c0067c9c] sys_ioctl+0xdc/0x2f4
Nov 26 10:43:35 penngrove kernel: [c00075dc] ret_from_syscall+0x0/0x44
Nov 26 10:43:35 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xcaec9d18), cmode 2
Nov 26 10:43:35 penngrove kernel: regs[]: 065c 064c 004c 0028 0004 066c 066e 00a2
Nov 26 10:43:35 penngrove kernel: 02a6 02a3 00a3 003b 02a7 001e 0154 026c
Nov 26 10:43:35 penngrove kernel: Call trace:
Nov 26 10:43:35 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:43:35 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:43:35 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:43:35 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:43:35 penngrove kernel: [c00e513c] fb_ioctl+0x228/0x5a4
Nov 26 10:43:35 penngrove kernel: [c0067c9c] sys_ioctl+0xdc/0x2f4
Nov 26 10:43:35 penngrove kernel: [c00075dc] ret_from_syscall+0x0/0x44
Nov 26 10:44:07 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xcaec9d18), cmode 2
Nov 26 10:44:07 penngrove kernel: regs[]: 040e 0404 0044 0023 0002 0418 041a 0046
Nov 26 10:44:07 penngrove kernel: 018e 0187 0047 002f 018f 0018 00c8 0160
Nov 26 10:44:07 penngrove kernel: Call trace:
Nov 26 10:44:07 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:44:07 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:44:07 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:44:07 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:44:07 penngrove kernel: [c00e513c] fb_ioctl+0x228/0x5a4
Nov 26 10:44:07 penngrove kernel: [c0067c9c] sys_ioctl+0xdc/0x2f4
Nov 26 10:44:07 penngrove kernel: [c00075dc] ret_from_syscall+0x0/0x44
Nov 26 10:44:07 penngrove kernel: fb0: control_set_hardware(0xc05cb0f0,0xcaec9c18), cmode 2
Nov 26 10:44:07 penngrove kernel: regs[]: 064e 0644 0044 0023 0002 0658 065a 0046
Nov 26 10:44:07 penngrove kernel: 024e 0247 0047 002f 024f 0018 0128 0220
Nov 26 10:44:07 penngrove kernel: Call trace:
Nov 26 10:44:07 penngrove kernel: [c000b1ec] dump_stack+0x18/0x28
Nov 26 10:44:07 penngrove kernel: [c00e9254] control_set_hardware+0xb0/0x274
Nov 26 10:44:07 penngrove kernel: [c00e8e5c] controlfb_set_par+0x64/0x9c
Nov 26 10:44:07 penngrove kernel: [c00e4e0c] fb_set_var+0xd4/0xd8
Nov 26 10:44:07 penngrove kernel: [c00e2868] fbcon_resize+0xd0/0x15c
Nov 26 10:44:07 penngrove kernel: [c00e2a0c] fbcon_switch+0x118/0x280
Nov 26 10:44:07 penngrove kernel: [c00b5be4] redraw_screen+0xf0/0x1ac
Nov 26 10:44:07 penngrove kernel: [c00b0ac8] complete_change_console+0x44/0xf4
Nov 26 10:44:07 penngrove kernel: [c00b02f4] vt_ioctl+0x168c/0x1cc0
Nov 26 10:44:07 penngrove kernel: [c00a8db0] tty_ioctl+0x150/0x5bc
Nov 26 10:44:07 penngrove kernel: [c0067c9c] sys_ioctl+0xdc/0x2f4
Nov 26 10:44:07 penngrove kernel: [c00075dc] ret_from_syscall+0x0/0x44
===============================================================================