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POWERPC: Get rid of remapping the whole immr

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The stuff below cleans up the code attempting to remap the whole cpm2_immr
early, as well as places happily assuming that fact. This is more like the 2.4
legacy stuff, and is at least confusing and unclear now.

To keep the world comfortable, a new mechanism is introduced: before accessing
specific immr register/register set, one needs to map it, using cpm2_map(<reg>),
for instance, access to CPM command register will look like
	volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
keeping the code clear, yet without "already defined somewhere" cpm2_immr.

So far, unmapping code is not implemented, but it's not a big deal to add it,
if the whole idea makes sense.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
This commit is contained in:
Vitaly Bordug
2006-09-21 22:37:58 +04:00
parent 902f392d01
commit fc8e50e349
9 changed files with 148 additions and 67 deletions
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2
arch/powerpc/sysdev/fsl_soc.c
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@ -633,7 +633,7 @@ static int __init fs_enet_of_init(void)
if (strstr(model, "FCC")) {
int fcc_index = fs_get_fcc_index(*id);
fs_enet_data.dpram_offset = (u32)cpm2_immr->im_dprambase;
fs_enet_data.dpram_offset = (u32)cpm_dpram_addr(0);
fs_enet_data.rx_ring = 32;
fs_enet_data.tx_ring = 32;
fs_enet_data.rx_copybreak = 240;