[parisc-linux] IODC: I'm a bit fed up :-(

[Bruno Vidal]

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	Hi
I'm loosing my nerves with iodc.....
I've found some interresting thing. For example, it is possible to obtain the HPA
of a modules directly by using a pdc call on PAT system. This one works fine:

struct device_path *dp
/* dp contain all needed informations */
memcpy(&mod,dp,sizeof(struct hardware_path));
pdc_status = mem_pdc_call( PDC_PAT_IO, PDC_PAT_IO_GET_PCI_CONFIG_FROM_HW, __pa(pdc_result), mod.num);

I've also succeded to retrive the ENTRY_INIT code. And I've double check that
this is truly an IODC code:
ret = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa , 
       PDC_IODC_INDEX_DATA, __pa(iodc_module_info), iodc_data_size);
and then
ret = mem_pdc_call (PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa,
       ENTRY_INIT, __pa(iodc_buffer_ptr), IODC_MAX, 0L, 0L, 0L, 0L, 0L);

-> I obtain the ENTRY_INIT iodc code in the ptr iodc_buffer_ptr.
this one has been reserved like this:
static unsigned long iodc_disk_buffer[IODC_MAX] __attribute__ ((aligned (8)));

Now I've really a problem. Each time I try to use this ENTRY_INIT code by using this call:
ret = real64_call(__pa(iodc_buffer_ptr),iodc_hpa, ENTRY_INIT_DEV,
                iodc_spa, __pa(dump_iodc_layer),__pa(pdc_result)); 

(I've also tried with real32_call, but it is exactly the same pb.)

it fail with HPMC !!!! I've analysed the HPMC and it has a problem while doing:
LDO             -64(r30),r29
LDO             20(r3),r2
LDB,O           0(r2),r17 -> HPMC

 
r29=ffffffffffffffff
r3=fffffffff8020000
r2=fffffffff8020014

(good news r3 is the base addr of my scsi card, sound good).
it is at offset iodc_buffer_ptr+0x1e3c
So it is inside the iodc code. It seems that it works on my
scsi card. But I don't have access to the firmware code. So if you have any idea, 
clue, anything, help !!!! I really think, that if I solve this pb, the dump will 
be shortly available.....

	Thanks.

-- 
	Vidal Bruno, (770-4271)
        SSD-HA Team, HP-UX & LINUX Support
	bruno_vidal@admin.france.hp.com
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