Re: [PATCH] sh: use declared coherent memory for dreamcast pci

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

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On Fri, 2008-01-25 at 21:00 +0000, Adrian McMenamin wrote:
> On Fri, 2008-01-25 at 13:16 +0900, Magnus Damm wrote:
> 
> > Can you please apply the attached patch and test both with and without
> > the 3 declared coherent patches? I'd like to see the values printed
> > out by printk() both with and without the declared coherent patches.
> > 
> > Thank you.
> > 
> > / magnus
> 
> Without the coherency patches...
> [    2.833387] zzzzzzzz:tx_bufs = 0xa1840000/0x01840000, rx_ring > 0xa1842000/0x01842000, (0x00000000)
> 
With the coherency patches...


[    2.890870] zzzzzzzz:tx_bufs = 0xa1840000/0x01840000, rx_ring = 0x00000000/0x00000000, (0x8cd010e0)

dreamy login: �[    0.000000] Linux version 2.6.24-rc8-g3f58465d-dirty (adrian@bossclass) (gcc version 3.4.6) #326 PREEMPT Fri Jan 25 21:43:31 GMT 2008
[    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      49152 ->    53248
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[1] active PFN ranges
[    0.000000]     0:    49152 ->    53248
[    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 consol7
[    0.000000] PID hash table entries: 64 (order: 6, 256 bytes)
[    0.000000] Using tmu for system timer
[    0.004317] Using 12.469 MHz high precision timer.
[    0.010038] Console: colour dummy device 80x25
[    0.015264] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.023145] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.032828] Memory: 13492k/16384k available (1907k kernel code, 632k data, 96k init)
[    0.041737] PVR\x040205c1 CVR\0000000 PRR\0000000
[    0.047252] I-cache : n_ways=1 n_sets%6 way_incr92
[    0.053261] I-cache : entry_mask=0x00001fe0 alias_mask=0x00001000 n_aliases=2
[    0.061449] D-cache : n_ways=1 n_setsQ2 way_incr\x16384
[    0.067556] D-cache : entry_mask=0x00003fe0 alias_mask=0x00003000 n_aliases=4
[    0.075993] SLUB: Genslabs=9, HWalign2, Order=0-1, MinObjects=4, CPUs=1, Nodes=1
[    0.175612] Mount-cache hash table entries: 512
[    0.181888] CPU: SH7750
[    0.188400] net_namespace: 64 bytes
[    0.195963] NET: Registered protocol family 16
[    0.218251] Maple bus core now registered.
[    0.223390] DMA: Registering DMA API.
[    0.227711] DMA: Registering sh_dmac handler (4 channels).
[    0.234246] Maple bus at (0, 0): Connected function 0x1
[    0.240286] No maple driver found for this device
[    0.246516] Maple bus at (1, 0): Connected function 0x40
[    0.252651] No maple driver found for this device
[    0.259225] No maple devices attached to port 2
[    0.264485] No maple devices attached to port 3
[    0.271997] DMA: Registering pvr2_dmac handler (1 channel).
[    0.279888] DMA: Registering g2_dmac handler (4 channels).
[    0.289247] Autoconfig PCI channel 0x8c278530
[    0.294387] Scanning bus 00, I/O 0x01001600:0x01003600, Mem 0x01840000:0x01848000
[    0.303027] Maple bus at (0, 1): Connected function 0xE
[    0.309065] No maple driver found for this device
[    0.314888] 00:00.0 Class 0200: 11db:1234 (rev 10)
[    0.320438]         I/O at 0x01001600 [size=0x100]
[    0.325984]         Mem at 0x01840000 [size=0x100]
[    0.332308] Maple bus at (0, 2): Connected function 0x10
[    0.338442] No maple driver found for this device
[    0.344736] PCI: Fixing up device 0000:00:00.0
[    0.366638] Time: SuperH clocksource has been installed.
[    0.376928] NET: Registered protocol family 2
[    0.419080] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.429569] TCP established hash table entries: 512 (order: 0, 4096 bytes)
[    0.437609] TCP bind hash table entries: 512 (order: -1, 2048 bytes)
[    0.445045] TCP: Hash tables configured (established 512 bind 512)
[    0.452150] TCP reno registered
[    0.467588] sq: Registering store queue API.
[    0.474363] cpufreq: SuperH CPU frequency driver.
[    0.479926] cpufreq: clock framework rate rounding not supported on this CPU.
[    0.491474] Total HugeTLB memory allocated, 0
[    0.498290] io scheduler noop registered
[    0.502845] io scheduler anticipatory registered (default)
[    1.640505] Console: switching to colour frame buffer device 80x30
[    1.700596] fb0: NEC PowerVR2 (rev 1.1) frame buffer device, using 1200k/8192k of video memory
[    1.710566] fb0: Mode 640x480-32 pitch = 2560 cable: VGA video output: VGA
[    1.718540] fb0: registering with SQ API
[    1.723397] sqremap:    NEC PowerVR2  [2048 pages]  va 0xe0000000   pa 0xa5000000
[    1.732097] fb0: Mapped video memory to SQ addr 0xe0000000
[    2.296084] SuperH SCI(F) driver initialized
[    2.301844] sh-sci: ttySC0 at MMIO 0xffe00000 (irq = 25) is a sci
[    2.309935] sh-sci: ttySC1 at MMIO 0xffe80000 (irq = 43) is a scif
�kȐ  2.317207] console handover: boot [sercon0] -> real [ttySC1]
[    2.324926] sh-sci sh-sci: CPU frequency notifier registered
[    2.330778] 8139too Fast Ethernet driver 0.9.28
[    2.338340] eth0: RealTek RTL8139 at 0xa1001700, 00:d0:f1:03:12:b9, IRQ 83
[    2.346804] input: Keyboard as /devices/maple/1:00.40/input/input0
[    2.367072] TCP cubic registered
[    2.369682] NET: Registered protocol family 1
[    2.374272] NET: Registered protocol family 17
[    2.379687] RPC: Registered udp transport module.
[    2.383910] RPC: Registered tcp transport module.
[    2.890870] zzzzzzzz:tx_bufs = 0xa1840000/0x01840000, rx_ring = 0x00000000/0x00000000, (0x8cd010e0)
[    2.899672] IP-Config: Failed to open eth0
[    2.903757] IP-Config: No network devices available.
[    2.909606] Looking up port of RPC 100003/2 on 192.168.61.50

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