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Diffstat (limited to 'target/mips/mikrotik-rb4xx/patches/4.1.6/0012-mips-ath79-swizzle-PCI-address-for-ar71xx.patch')
-rw-r--r--target/mips/mikrotik-rb4xx/patches/4.1.6/0012-mips-ath79-swizzle-PCI-address-for-ar71xx.patch130
1 files changed, 130 insertions, 0 deletions
diff --git a/target/mips/mikrotik-rb4xx/patches/4.1.6/0012-mips-ath79-swizzle-PCI-address-for-ar71xx.patch b/target/mips/mikrotik-rb4xx/patches/4.1.6/0012-mips-ath79-swizzle-PCI-address-for-ar71xx.patch
new file mode 100644
index 000000000..c63489112
--- /dev/null
+++ b/target/mips/mikrotik-rb4xx/patches/4.1.6/0012-mips-ath79-swizzle-PCI-address-for-ar71xx.patch
@@ -0,0 +1,130 @@
+From 0c139cb15774f3c41a0cf6620727e676c874834a Mon Sep 17 00:00:00 2001
+From: Phil Sutter <phil@nwl.cc>
+Date: Tue, 13 May 2014 00:28:24 +0200
+Subject: [PATCH] mips: ath79: swizzle PCI address for ar71xx
+
+---
+ arch/mips/ath79/pci.c | 42 ++++++++++++++++++++++++++
+ arch/mips/include/asm/mach-ath79/mangle-port.h | 37 +++++++++++++++++++++++
+ 2 files changed, 79 insertions(+)
+ create mode 100644 arch/mips/include/asm/mach-ath79/mangle-port.h
+
+diff --git a/arch/mips/ath79/pci.c b/arch/mips/ath79/pci.c
+index 730c0b0..47be58c 100644
+--- a/arch/mips/ath79/pci.c
++++ b/arch/mips/ath79/pci.c
+@@ -13,6 +13,7 @@
+ */
+
+ #include <linux/init.h>
++#include <linux/export.h>
+ #include <linux/pci.h>
+ #include <linux/resource.h>
+ #include <linux/platform_device.h>
+@@ -25,6 +26,9 @@ static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
+ static const struct ath79_pci_irq *ath79_pci_irq_map __initdata;
+ static unsigned ath79_pci_nr_irqs __initdata;
+
++static unsigned long (*__ath79_pci_swizzle_b)(unsigned long port);
++static unsigned long (*__ath79_pci_swizzle_w)(unsigned long port);
++
+ static const struct ath79_pci_irq ar71xx_pci_irq_map[] __initconst = {
+ {
+ .slot = 17,
+@@ -212,12 +216,50 @@ ath79_register_pci_ar724x(int id,
+ return pdev;
+ }
+
++static inline bool ar71xx_is_pci_addr(unsigned long port)
++{
++ unsigned long phys = CPHYSADDR(port);
++
++ return (phys >= AR71XX_PCI_MEM_BASE &&
++ phys < AR71XX_PCI_MEM_BASE + AR71XX_PCI_MEM_SIZE);
++}
++
++static unsigned long ar71xx_pci_swizzle_b(unsigned long port)
++{
++ return ar71xx_is_pci_addr(port) ? port ^ 3 : port;
++}
++
++static unsigned long ar71xx_pci_swizzle_w(unsigned long port)
++{
++ return ar71xx_is_pci_addr(port) ? port ^ 2 : port;
++}
++
++unsigned long ath79_pci_swizzle_b(unsigned long port)
++{
++ if (__ath79_pci_swizzle_b)
++ return __ath79_pci_swizzle_b(port);
++
++ return port;
++}
++EXPORT_SYMBOL(ath79_pci_swizzle_b);
++
++unsigned long ath79_pci_swizzle_w(unsigned long port)
++{
++ if (__ath79_pci_swizzle_w)
++ return __ath79_pci_swizzle_w(port);
++
++ return port;
++}
++EXPORT_SYMBOL(ath79_pci_swizzle_w);
++
+ int __init ath79_register_pci(void)
+ {
+ struct platform_device *pdev = NULL;
+
+ if (soc_is_ar71xx()) {
+ pdev = ath79_register_pci_ar71xx();
++ __ath79_pci_swizzle_b = ar71xx_pci_swizzle_b;
++ __ath79_pci_swizzle_w = ar71xx_pci_swizzle_w;
+ } else if (soc_is_ar724x()) {
+ pdev = ath79_register_pci_ar724x(-1,
+ AR724X_PCI_CFG_BASE,
+diff --git a/arch/mips/include/asm/mach-ath79/mangle-port.h b/arch/mips/include/asm/mach-ath79/mangle-port.h
+new file mode 100644
+index 0000000..ffd4e20
+--- /dev/null
++++ b/arch/mips/include/asm/mach-ath79/mangle-port.h
+@@ -0,0 +1,37 @@
++/*
++ * Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org>
++ *
++ * This file was derived from: inlude/asm-mips/mach-generic/mangle-port.h
++ * Copyright (C) 2003, 2004 Ralf Baechle
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++
++#ifndef __ASM_MACH_ATH79_MANGLE_PORT_H
++#define __ASM_MACH_ATH79_MANGLE_PORT_H
++
++#ifdef CONFIG_PCI
++extern unsigned long (ath79_pci_swizzle_b)(unsigned long port);
++extern unsigned long (ath79_pci_swizzle_w)(unsigned long port);
++#else
++#define ath79_pci_swizzle_b(port) (port)
++#define ath79_pci_swizzle_w(port) (port)
++#endif
++
++#define __swizzle_addr_b(port) ath79_pci_swizzle_b(port)
++#define __swizzle_addr_w(port) ath79_pci_swizzle_w(port)
++#define __swizzle_addr_l(port) (port)
++#define __swizzle_addr_q(port) (port)
++
++# define ioswabb(a, x) (x)
++# define __mem_ioswabb(a, x) (x)
++# define ioswabw(a, x) (x)
++# define __mem_ioswabw(a, x) cpu_to_le16(x)
++# define ioswabl(a, x) (x)
++# define __mem_ioswabl(a, x) cpu_to_le32(x)
++# define ioswabq(a, x) (x)
++# define __mem_ioswabq(a, x) cpu_to_le64(x)
++
++#endif /* __ASM_MACH_ATH79_MANGLE_PORT_H */
+--
+1.8.5.3
+