Re: alpha iommu fixes

Tom Vier (tmv5@home.com)
Fri, 18 May 2001 22:34:36 -0400

maybe this third window stuff in cia_enable_broken_tbia() is why i can't
seem to get the third window to open up. from my reading of the 21174 docs,
my code should work. since T2_BASE is at 0x40000000 for 1gig, i'd think
T3_BASE should be at 0x80000000. am i missing something?

hose->sg_pci = iommu_arena_new(hose, 0xc0000000, 0x08000000, 32768);
*(vip)CIA_IOC_PCI_W3_BASE = 0xc0000000 | 1;
*(vip)CIA_IOC_PCI_W3_MASK = (0x08000000 - 1) & 0xfff00000;
*(vip)CIA_IOC_PCI_T3_BASE = 0x80000000 >> 2;

On Fri, May 18, 2001 at 09:46:17PM +0400, Ivan Kokshaysky wrote:
> - *(vip)CIA_IOC_PCI_W3_BASE = CIA_BROKEN_TBI_TRY2_BASE | 3;
> - *(vip)CIA_IOC_PCI_W3_MASK = (PAGE_SIZE - 1) & 0xfff00000;
> + *(vip)CIA_IOC_PCI_W3_BASE = CIA_BROKEN_TBIA_BASE | 3;
> + *(vip)CIA_IOC_PCI_W3_MASK = (CIA_BROKEN_TBIA_SIZE*1024 - 1)
> + & 0xfff00000;
> *(vip)CIA_IOC_PCI_T3_BASE = virt_to_phys(ppte) >> 2;
> }

-- 
Tom Vier <tmv5@home.com>
DSA Key id 0x27371A2C
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