Re: [PATCH v2] sh: Update dma-sh api

[Adrian McMenamin <adrian@newgolddream.dyndns.info>]

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On Sat, 2009-03-14 at 00:09 +0900, Paul Mundt wrote:
> On Fri, Mar 13, 2009 at 12:05:25PM +0000, Adrian McMenamin wrote:
> > 2009/3/10 Paul Mundt <lethal@linux-sh.org>:
> > > On Tue, Mar 10, 2009 at 04:22:37PM +0900, Nobuhiro Iwamatsu wrote:
> > >> Paul Mundt wrote:
> > >> >On Tue, Mar 10, 2009 at 01:48:14PM +0900, Nobuhiro Iwamatsu wrote:
> > 
> >  ...
> > 
> > >> I see.
> > >> I have already been writing the driver of DMAengine, and I am testing.
> > >> To make old DMA-API coexist with dma engine in these patches, I wrote.
> > >>
> > > Ah, ok, I wasn't aware that that was what your intention was. In that
> > > case, once the Dreamcast fallout is fixed, I'll merge these.
> > 
> > 
> > Just come across this. I am happy to test any new patch on the
> > Dreamcast once it's done. Just let me know and kick me if I don't
> > respond.
> 
> The updated version of this is merged now, so please see if there are any
> regressions in the current git tree.


Doesn't work I'm afraid:

[    0.000000] Linux version 2.6.29-rc7-00215-g600fa57 (adrian@bossclass) (gcc version 4.2.2) #1 PREEMPT Sat Mar 14 00:53:47 GMT 2009
[    0.000000] Boot params:
[    0.000000] ... MOUNT_ROOT_RDONLY - 91f0c75f
[    0.000000] ... RAMDISK_FLAGS     - e1ff3018
[    0.000000] ... ORIG_ROOT_DEV     - 89093610
[    0.000000] ... LOADER_TYPE       - 3612e108
[    0.000000] ... INITRD_START      - 46088904
[    0.000000] ... INITRD_SIZE       - 6002306c
[    0.000000] console [sercon0] enabled
[    0.000000] Booting machvec: Sega Dreamcast
[    0.000000] Node 0: start_pfn = 0xc000, low = 0xd000
[    0.000000] Zone PFN ranges:
[    0.000000]   Normal   0x0000c000 -> 0x0000d000
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[1] active PFN ranges
[    0.000000]     0: 0x0000c000 -> 0x0000d000
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 4064
[    0.000000] Kernel command line: root=/dev/nfs rw nfsroot\x192.168.61.50:/home/adrian/debdist ip=dhcp earlyprintk=serial video=pvr2fb:640x480-32@60 console=ttySC1 panic=7
[    0.000000] PID hash table entries: 64 (order: 6, 256 bytes)
[    0.000000] Using tmu for system timer
[    0.004322] Console: colour dummy device 80x25
[    0.009399] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.016935] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.026888] Memory: 12400k/16384k available (2456k kernel code, 623k data, 124k init)
[    0.035501] PVR\x040205c1 CVR\0000000 PRR\0000000
[    0.040841] I-cache : n_ways=1 n_sets%6 way_incr92
[    0.046567] I-cache : entry_mask=0x00001fe0 alias_mask=0x00001000 n_aliases=2
[    0.054406] D-cache : n_ways=1 n_setsQ2 way_incr\x16384
[    0.060231] D-cache : entry_mask=0x00003fe0 alias_mask=0x00003000 n_aliases=4
[    0.068538] SLUB: Genslabs\x10, HWalign2, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.077089] Calibrating delay loop (skipped)... 199.50 BogoMIPS PRESET (lpj99012)
[    0.086987] Mount-cache hash table entries: 512
[    0.097040] CPU: SH7750
[    0.128986] net_namespace: 296 bytes
[    0.134762] NET: Registered protocol family 16
[    0.266443] bio: create slab <bio-0> at 0
[    0.292390] DMA: Registering DMA API.
[    0.297156] DMAC Address Error0 request_irq fail
[    0.302362] Fault in unaligned fixup: 0000 [#1]
[    0.307267] Modules linked in:
[    0.310696] 
[    0.312257] Pid : 1, Comm:           swapper
[    0.316168] CPU : 0                  Not tainted  (2.6.29-rc7-00215-g600fa57 #1)
[    0.316197] 
[    0.325248] PC is at request_dma+0x2c/0xc0
[    0.329693] PR is at request_dma+0x1e/0xc0
[    0.334162] PC  : 8c1c40cc SP  : 8cc1ff00 SR  : 400001f1 TEA : 0000001a
[    0.341421] R0  : 00000000 R1  : 40000101 R2  : 8c2feb94 R3  : 8c2feb94
[    0.348673] R4  : 00000002 R5  : 8c2bed08 R6  : 8cc47c58 R7  : 00000000
[    0.355926] R8  : ffffffea R9  : 00000000 R10 : 8c2bed08 R11 : 00000000
[    0.363165] R12 : 8c315500 R13 : 8c323064 R14 : 8cc1ff00
[    0.368990] MACH: 00000000 MACL: 00000a80 GBR : 00000000 PR  : 8c1c40be
[    0.376220] 
[    0.376234] Call trace:
[    0.380641] [<8c315516>] pvr2_dma_init+0x16/0x40
[    0.385669] [<8c002060>] do_one_initcall+0x0/0x1a0
[    0.390912] [<8c00208c>] do_one_initcall+0x2c/0x1a0
[    0.396261] [<8c04d1ee>] register_irq_proc+0x6e/0xc0
[    0.401696] [<8c04d27a>] init_irq_proc+0x3a/0x80
[    0.406753] [<8c04d180>] register_irq_proc+0x0/0xc0
[    0.412094] [<8c04a040>] irq_to_desc+0x0/0x40
[    0.416863] [<8c304528>] kernel_init+0x68/0x120
[    0.421908] [<8c002060>] do_one_initcall+0x0/0x1a0
[    0.427122] [<8c003c88>] kernel_thread_helper+0x8/0x20
[    0.432760] [<8c3044c0>] kernel_init+0x0/0x120
[    0.437621] [<8c003c80>] kernel_thread_helper+0x0/0x20
[    0.443317] 
[    0.444873] Code:
[    0.446971]   8c1c40c6:  ldc       r0, sr
[    0.451456]   8c1c40c8:  mov       r1, r0
[    0.455911]   8c1c40ca:  and       #-16, r0
[    0.460557] ->8c1c40cc:  mov.l     @(48,r8), r9
[    0.465623]   8c1c40ce:  mov       #1, r1
[    0.470090]   8c1c40d0:  tst       r0, r0
[    0.474580]   8c1c40d2:  mov.l     r1, @(48,r8)
[    0.479644]   8c1c40d4:  bt        8c1c40e0
[    0.484259]   8c1c40d6:  and       #-16, r0
[    0.488887] 
[    0.490453] Process: swapper (pid: 1, stack limit = 8cc1e001)
[    0.496744] Stack: (0x8cc1ff00 to 0x8cc20000)
[    0.501503] ff00: 8c315516 8cc1ff18 8c321718 8c32148c 8c002060 8c321530 8c00208c 8cc1ff20 
[    0.510632] ff20: 00000001 00000000 8c32ba48 8cc1fef8 8cc47600 8cc46d20 8c04d1ee 8cc1ff48 
[    0.519864] ff40: 8c2ee0a4 8cc1ff4a 3431ff14 00000032 00000000 8c04d27a 8cc1ff6c 8c04d180 
[    0.529019] ff60: 8c04a040 8c304528 8cc1ff84 00000000 00000000 8c321718 8c32148c 8c002060 
[    0.538237] ff80: 8c321530 8c003c88 8cc1ff9c 00000000 00000000 00000000 00000000 00000000 
[    0.547379] ffa0: 00000000 00000000 00000000 00000000 00000000 00000000 8c3044c0 00000000 
[    0.556470] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 
[    0.565759] ffe0: 8cc1ffa4 8c003c80 00000000 40000000 00000000 00000000 00000000 00000000 
[    0.575044] ---[ end trace 4eaa2a86a8e2da22 ]---
[    0.580220] Kernel panic - not syncing: Attempted to kill init!
[    0.586833] Rebooting in 7 seconds..


0x8c1c40cc corresponds to arch/sh/include/asm/cmpxchg-irq.h:9

0x8c1c40be is arch/sh/drivers/dma/dma-api.c:198

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