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Use bus_space when reading CIS. This allows us to access it in 8 bit

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mode, which is what the standard mandates.

Submitted by: Takanori Watanabe-san
Reviewed by: jhb
This commit is contained in:
Warner Losh 2001-06-05 23:42:51 +00:00
parent 656f411d33
commit ca604d262f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=77795
1 changed files with 11 additions and 7 deletions
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18
sys/dev/cardbus/cardbus_cis.c
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@ -387,6 +387,8 @@ cardbus_read_tuple_mem(device_t dev, device_t child, u_int32_t *start,
u_int8_t *tupledata)
{
struct resource *mem;
bus_space_tag_t bt;
bus_space_handle_t bh;
int rid;
int ret;
@ -398,6 +400,8 @@ cardbus_read_tuple_mem(device_t dev, device_t child, u_int32_t *start,
mem = bus_alloc_resource(child, SYS_RES_MEMORY, &rid, 0, ~0,
1, RF_ACTIVE);
bt = rman_get_bustag(mem);
bh = rman_get_bushandle(mem);
if (mem == NULL) {
device_printf(dev, "Failed to get memory for CIS reading\n");
return ENOMEM;
@ -407,13 +411,13 @@ cardbus_read_tuple_mem(device_t dev, device_t child, u_int32_t *start,
ret = cardbus_read_tuple_exrom(dev, mem, start, off, tupleid,
len, tupledata);
} else {
/* XXX byte order? */
unsigned char* ptr;
ptr = (unsigned char*)rman_get_virtual(mem)
+ CARDBUS_CIS_ADDR(*start) + *off;
*tupleid = ptr[0];
*len = ptr[1];
memcpy(tupledata, ptr+2, *len);
*tupleid = bus_space_read_1(bt, bh,
CARDBUS_CIS_ADDR(*start) + *off);
*len = bus_space_read_1(bt, bh,
CARDBUS_CIS_ADDR(*start) + *off + 1);
bus_space_read_multi_1(rman_get_bustag(mem),
rman_get_bushandle(mem),
*off + CARDBUS_CIS_ADDR(*start), tupledata, *len);
ret = 0;
*off += *len+2;
}