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powerpc/maple: Register CPC925 EDAC device on all boards with CPC925

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Currently Maple setup code creates cpc925_edac device only on
Motorola ATCA-6101 blade. Make setup code check bridge revision
and enable EDAC on all U3H bridges.

Verified on Momentum MapleD (ppc970fx kit) board.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Dmitry Eremin-Solenikov 2011-06-17 02:51:46 +00:00 committed by Benjamin Herrenschmidt
parent de2780a3d8
commit 8a0360a563
1 changed files with 19 additions and 22 deletions
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41
arch/powerpc/platforms/maple/setup.c
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@ -338,35 +338,16 @@ define_machine(maple) {
#ifdef CONFIG_EDAC
/*
* Register a platform device for CPC925 memory controller on
* Motorola ATCA-6101 blade.
* all boards with U3H (CPC925) bridge.
*/
#define MAPLE_CPC925_MODEL "Motorola,ATCA-6101"
static int __init maple_cpc925_edac_setup(void)
{
struct platform_device *pdev;
struct device_node *np = NULL;
struct resource r;
const unsigned char *model;
int ret;
np = of_find_node_by_path("/");
if (!np) {
printk(KERN_ERR "%s: Unable to get root node\n", __func__);
return -ENODEV;
}
model = (const unsigned char *)of_get_property(np, "model", NULL);
if (!model) {
printk(KERN_ERR "%s: Unabel to get model info\n", __func__);
of_node_put(np);
return -ENODEV;
}
ret = strcmp(model, MAPLE_CPC925_MODEL);
of_node_put(np);
if (ret != 0)
return 0;
volatile void __iomem *mem;
u32 rev;
np = of_find_node_by_type(NULL, "memory-controller");
if (!np) {
@ -384,6 +365,22 @@ static int __init maple_cpc925_edac_setup(void)
return -ENODEV;
}
mem = ioremap(r.start, resource_size(&r));
if (!mem) {
printk(KERN_ERR "%s: Unable to map memory-controller memory\n",
__func__);
return -ENOMEM;
}
rev = __raw_readl(mem);
iounmap(mem);
if (rev < 0x34 || rev > 0x3f) { /* U3H */
printk(KERN_ERR "%s: Non-CPC925(U3H) bridge revision: %02x\n",
__func__, rev);
return 0;
}
pdev = platform_device_register_simple("cpc925_edac", 0, &r, 1);
if (IS_ERR(pdev))
return PTR_ERR(pdev);