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MIPS: BCM47xx: Register SSB fallback sprom callback

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We are generating the prefix based on the PCI bus address the device is
on. This is done like Broadcom does it in their code expect that the the
bus number is increased by one. In the SB bus implementation used by
Broadcom the SB bus emulates a PCI bus so the kernel sees one PCI bus
more then in our implementation. We do not handle prefixes like sb/1/
yet as they are only used on the new bus which is not implemented yet.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2364/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Hauke Mehrtens 2011-05-10 23:31:32 +02:00 committed by Ralf Baechle
parent a7c62f8564
commit fe6f3642ac
2 changed files with 24 additions and 1 deletions
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3
arch/mips/bcm47xx/nvram.c
View file

@ -3,6 +3,7 @@
*
* Copyright (C) 2005 Broadcom Corporation
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -23,7 +24,7 @@
static char nvram_buf[NVRAM_SPACE];
/* Probe for NVRAM header */
static void __init early_nvram_init(void)
static void early_nvram_init(void)
{
struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore;
struct nvram_header *header;

22
arch/mips/bcm47xx/setup.c
View file

@ -3,6 +3,7 @@
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2006 Michael Buesch <mb@bu3sch.de>
* Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
* Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -154,6 +155,22 @@ static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
}
}
int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
{
char prefix[10];
if (bus->bustype == SSB_BUSTYPE_PCI) {
snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
bus->host_pci->bus->number + 1,
PCI_SLOT(bus->host_pci->devfn));
bcm47xx_fill_sprom(out, prefix);
return 0;
} else {
printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
return -EINVAL;
}
}
static int bcm47xx_get_invariants(struct ssb_bus *bus,
struct ssb_init_invariants *iv)
{
@ -185,6 +202,11 @@ void __init plat_mem_setup(void)
char buf[100];
struct ssb_mipscore *mcore;
err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
if (err)
printk(KERN_WARNING "bcm47xx: someone else already registered"
" a ssb SPROM callback handler (err %d)\n", err);
err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
bcm47xx_get_invariants);
if (err)