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ieee1394: extend lowlevel API for address range properties

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Host adapter hardware imposes certain restrictions and features on
address ranges.  Instead of hard-wire such ranges into the ieee1394
core or even into protocol drivers, let lowlevel drivers specify
these ranges via struct hpsb_host.

Patch "ohci1394: set address range properties" must be applied too,
else hpsb_allocate_and_register_addrspace() won't work properly.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
This commit is contained in:
Ben Collins 2006-06-12 18:13:21 -04:00
parent 20f4578156
commit 8aef63ff03
2 changed files with 5 additions and 1 deletions
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4
drivers/ieee1394/highlevel.c
View file

@ -312,8 +312,10 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
return retval;
}
/* default range,
* avoids controller's posted write area (see OHCI 1.1 clause 1.5) */
if (start == ~0ULL && end == ~0ULL) {
start = CSR1212_ALL_SPACE_BASE + 0xffff00000000ULL; /* ohci1394.c limit */
start = host->middle_addr_space;
end = CSR1212_ALL_SPACE_END;
}

2
drivers/ieee1394/hosts.h
View file

@ -73,6 +73,8 @@ struct hpsb_host {
unsigned int config_roms;
struct list_head addr_space;
u64 low_addr_space; /* upper bound of physical DMA area */
u64 middle_addr_space; /* upper bound of posted write area */
};