brcm63xx: rework fallback sprom support

Rework fallback sprom support by providing different sproms for
different chips. Also make it optional to use.

This likely causes sprom fallback support to break on a few boards.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 41942

1 files changed, 102 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-3.14/365-MIPS-BCM63XX-allow-setting-a-pci-bus-device-for-fall.patch b/target/linux/brcm63xx/patches-3.14/365-MIPS-BCM63XX-allow-setting-a-pci-bus-device-for-fall.patch
new file mode 100644
index 0000000000..15c760ab9b
--- /dev/null
+++ b/target/linux/brcm63xx/patches-3.14/365-MIPS-BCM63XX-allow-setting-a-pci-bus-device-for-fall.patch
@@ -0,0 +1,102 @@
+From f393eaacf178e7e8a61eb11a96edd7dfb35cb49d Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Thu, 31 Jul 2014 20:39:44 +0200
+Subject: [PATCH 10/10] MIPS: BCM63XX: allow setting a pci bus/device for
+ fallback sprom
+
+Warn if the set pci bus/slot does not match the actual request.
+
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+---
+ arch/mips/bcm63xx/sprom.c                          | 31 ++++++++++++++++++----
+ .../asm/mach-bcm63xx/bcm63xx_fallback_sprom.h      |  3 +++
+ 2 files changed, 29 insertions(+), 5 deletions(-)
+
+--- a/arch/mips/bcm63xx/sprom.c
++++ b/arch/mips/bcm63xx/sprom.c
+@@ -381,13 +381,25 @@ static __initconst u16 bcm4331_sprom[] =
+ 
+ #endif  /* CONFIG_BCMA_HOST_PCI */
+ 
+-static struct ssb_sprom bcm63xx_sprom;
++struct fallback_sprom_match {
++	u8 pci_bus;
++	u8 pci_dev;
++	struct ssb_sprom sprom;
++};
++
++static struct fallback_sprom_match fallback_sprom;
+ 
+ #if defined(CONFIG_SSB_PCIHOST)
+ int bcm63xx_get_fallback_ssb_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
+ {
+ 	if (bus->bustype == SSB_BUSTYPE_PCI) {
+-		memcpy(out, &bcm63xx_sprom, sizeof(struct ssb_sprom));
++		if (bus->host_pci->bus->number != fallback_sprom.pci_bus ||
++		    PCI_SLOT(bus->host_pci->devfn) != fallback_sprom.pci_dev)
++			pr_warn("ssb_fallback_sprom: pci bus/device num mismatch: expected %i/%i, but got %i/%i\n",
++				fallback_sprom.pci_bus, fallback_sprom.pci_dev,
++				bus->host_pci->bus->number,
++				PCI_SLOT(bus->host_pci->devfn));
++		memcpy(out, &fallback_sprom.sprom, sizeof(struct ssb_sprom));
+ 		return 0;
+ 	} else {
+ 		printk(KERN_ERR PFX "unable to fill SPROM for given bustype.\n");
+@@ -400,7 +412,13 @@ int bcm63xx_get_fallback_ssb_sprom(struc
+ int bcm63xx_get_fallback_bcma_sprom(struct bcma_bus *bus, struct ssb_sprom *out)
+ {
+ 	if (bus->hosttype == BCMA_HOSTTYPE_PCI) {
+-		memcpy(out, &bcm63xx_sprom, sizeof(struct ssb_sprom));
++		if (bus->host_pci->bus->number != fallback_sprom.pci_bus ||
++		    PCI_SLOT(bus->host_pci->devfn) != fallback_sprom.pci_dev)
++			pr_warn("bcma_fallback_sprom: pci bus/device num mismatch: expected %i/%i, but got %i/%i\n",
++				fallback_sprom.pci_bus, fallback_sprom.pci_dev,
++				bus->host_pci->bus->number,
++				PCI_SLOT(bus->host_pci->devfn));
++		memcpy(out, &fallback_sprom.sprom, sizeof(struct ssb_sprom));
+ 		return 0;
+ 	} else {
+ 		printk(KERN_ERR PFX "unable to fill SPROM for given bustype.\n");
+@@ -962,8 +980,8 @@ int __init bcm63xx_register_fallback_spr
+ 		break;
+ #endif
+ 	case SPROM_DEFAULT:
+-		memcpy(&bcm63xx_sprom, &bcm63xx_default_sprom,
+-		       sizeof(bcm63xx_sprom));
++		memcpy(&fallback_sprom.sprom, &bcm63xx_default_sprom,
++		       sizeof(bcm63xx_default_sprom));
+ 		break;
+ 	default:
+ 		return -EINVAL;
+@@ -973,12 +991,15 @@ int __init bcm63xx_register_fallback_spr
+ 		sprom_apply_fixups(template_sprom, data->board_fixups,
+ 				   data->num_board_fixups);
+ 
+-		sprom_extract(&bcm63xx_sprom, template_sprom, size);
++		sprom_extract(&fallback_sprom.sprom, template_sprom, size);
+ 	}
+ 
+-	memcpy(bcm63xx_sprom.et0mac, data->mac_addr, ETH_ALEN);
+-	memcpy(bcm63xx_sprom.et0mac, data->mac_addr, ETH_ALEN);
+-	memcpy(bcm63xx_sprom.et1mac, data->mac_addr, ETH_ALEN);
++	memcpy(fallback_sprom.sprom.et0mac, data->mac_addr, ETH_ALEN);
++	memcpy(fallback_sprom.sprom.et0mac, data->mac_addr, ETH_ALEN);
++	memcpy(fallback_sprom.sprom.et1mac, data->mac_addr, ETH_ALEN);
++
++	fallback_sprom.pci_bus = data->pci_bus;
++	fallback_sprom.pci_dev = data->pci_dev;
+ #endif /* defined(CONFIG_SSB_PCIHOST) || defined(CONFIG_BCMA_HOST_PCI) */
+ 
+ #if defined(CONFIG_SSB_PCIHOST)
+--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_fallback_sprom.h
++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_fallback_sprom.h
+@@ -30,6 +30,9 @@ struct fallback_sprom_data {
+ 	u8 mac_addr[ETH_ALEN];
+ 	enum sprom_type type;
+ 
++	u8 pci_bus;
++	u8 pci_dev;
++
+ 	struct sprom_fixup *board_fixups;
+ 	unsigned int num_board_fixups;
+ };