• Takashi Yoshii's avatar
    sh: sh7785lcr: Map whole PCI address space. · 68b42d1b
    Takashi Yoshii authored
    PCI still doesn't work on sh7785lcr 29bit 256M map mode.
    
    On SH7785, PCI -> SHwy address translation is not base+offset but
    somewhat like base|offset (See HW Manual (rej09b0261) Fig. 13.11).
    So, you can't export CS2,3,4,5 by 256M at CS2 (results CS0,1,2,3
    exported, I guess).  There are two candidates.
    
    a) 128M@CS2 + 128M@CS4
    b) 512M@CS0
    
    Attached patch is B. It maps 512M Byte at 0 independently of memory
    size. It results CS0 to CS6 and perhaps some more being accessible
    from PCI.
    
    Tested on
    7785lcr 29bit 128M map
    7785lcr 29bit 256M map
    (NOT tested on 32bit)
    Signed-off-by: default avatarTakashi YOSHII <yoshii.takashi@renesas.com>
    Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
    68b42d1b
ops-sh7785lcr.c 1.43 KB