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 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)

[    0.000000] Linux version 2.6.24-rc8-g96010b55-dirty (adrian@bossclass) (gcc version 3.4.6) #325 PREEMPT Fri Jan 25 20:55:23 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
[    0.004322] Using 12.469 MHz high precision timer.
[    0.010042] Console: colour dummy device 80x25
[    0.015260] Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.023141] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.032852] Memory: 13492k/16384k available (1907k kernel code, 632k data, 96k init)
[    0.041763] PVR\x040205c1 CVR\0000000 PRR\0000000
[    0.047277] I-cache : n_ways=1 n_sets%6 way_incr92
[    0.053284] I-cache : entry_mask=0x00001fe0 alias_mask=0x00001000 n_aliases=2
[    0.061475] D-cache : n_ways=1 n_setsQ2 way_incr\x16384
[    0.067580] D-cache : entry_mask=0x00003fe0 alias_mask=0x00003000 n_aliases=4
[    0.075997] SLUB: Genslabs=9, HWalign2, Order=0-1, MinObjects=4, CPUs=1, Nodes=1
[    0.175560] Mount-cache hash table entries: 512
[    0.181822] CPU: SH7750
[    0.188425] net_namespace: 64 bytes
[    0.195981] NET: Registered protocol family 16
[    0.218402] Maple bus core now registered.
[    0.223419] DMA: Registering DMA API.
[    0.227713] DMA: Registering sh_dmac handler (4 channels).
[    0.237179] DMA: Registering pvr2_dmac handler (1 channel).
[    0.245030] DMA: Registering g2_dmac handler (4 channels).
[    0.254340] Autoconfig PCI channel 0x8c278530
[    0.259497] Scanning bus 00, I/O 0x01001600:0x01003600, Mem 0x01840000:0x01848000
[    0.268201] 00:00.0 Class 0200: 11db:1234 (rev 10)
[    0.273749]         I/O at 0x01001600 [size=0x100]
[    0.279483]         Mem at 0x01840000 [size=0x100]
[    0.285923] PCI: Fixing up device 0000:00:00.0
[    0.310760] Time: SuperH clocksource has been installed.
[    0.321218] NET: Registered protocol family 2
[    0.363178] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.373744] TCP established hash table entries: 512 (order: 0, 4096 bytes)
[    0.381772] TCP bind hash table entries: 512 (order: -1, 2048 bytes)
[    0.389184] TCP: Hash tables configured (established 512 bind 512)
[    0.396293] TCP reno registered
[    0.411663] sq: Registering store queue API.
[    0.418456] cpufreq: SuperH CPU frequency driver.
[    0.423949] cpufreq: clock framework rate rounding not supported on this CPU.
[    0.435453] Total HugeTLB memory allocated, 0
[    0.442081] io scheduler noop registered
[    0.446662] io scheduler anticipatory registered (default)
[    1.578357] Console: switching to colour frame buffer device 80x30
[    1.637402] fb0: NEC PowerVR2 (rev 1.1) frame buffer device, using 1200k/8192k of video memory
[    1.647303] fb0: Mode 640x480-32 pitch = 2560 cable: VGA video output: VGA
[    1.655257] fb0: registering with SQ API
[    1.660102] sqremap:    NEC PowerVR2  [2048 pages]  va 0xe0000000   pa 0xa5000000
[    1.668709] fb0: Mapped video memory to SQ addr 0xe0000000
[    2.232603] SuperH SCI(F) driver initialized
[    2.238353] sh-sci: ttySC0 at MMIO 0xffe00000 (irq = 25) is a sci
[    2.246417] sh-sci: ttySC1 at MMIO 0xffe80000 (irq = 43) is a scif
�kȐ  2.253707] console handover: boot [sercon0] -> real [ttySC1]
[    2.261322] sh-sci sh-sci: CPU frequency notifier registered
[    2.267290] 8139too Fast Ethernet driver 0.9.28
[    2.274966] eth0: RealTek RTL8139 at 0xa1001700, 00:d0:f1:03:12:b9, IRQ 83
[    2.282232] Dreamcast_keyboard: probe of 0:0.port failed with error -22
[    2.288540] Dreamcast_keyboard: probe of 1:0.port failed with error -22
[    2.295327] Dreamcast_keyboard: probe of 2:0.port failed with error -22
[    2.302148] Dreamcast_keyboard: probe of 3:0.port failed with error -22
[    2.308991] TCP cubic registered
[    2.312239] NET: Registered protocol family 1
[    2.316745] NET: Registered protocol family 17
[    2.322042] RPC: Registered udp transport module.
[    2.326201] RPC: Registered tcp transport module.
[    2.833387] zzzzzzzz:tx_bufs = 0xa1840000/0x01840000, rx_ring = 0xa1842000/0x01842000, (0x00000000)
[    2.842145] eth0: link up, 100Mbps, full-duplex, lpa 0x41E1
[    3.848013] Sending DHCP requests ., OK
[    3.867949] IP-Config: Got DHCP answer from 192.168.61.50, my address is 192.168.61.55
[    3.876893] IP-Config: Complete:
[    3.879289]       device=eth0, addr\x192.168.61.55, mask%5.255.255.224, gw\x192.168.61.50,
[    3.887844]      host\x192.168.61.55, domain=, nis-domain=(none),
[    3.893976]      bootserver\x192.168.61.50, rootserver\x192.168.61.50, rootpath[    3.902331] Looking up port of RPC 100003/2 on 192.168.61.50
[    3.912680] Looking up port of RPC 100005/1 on 192.168.61.50
[    3.953472] VFS: Mounted root (nfs filesystem).
[    3.958001] Freeing unused kernel memory: 96k freed

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