From 19506fc51852e859bb08ab5abbdb8fd02b7392f2 Mon Sep 17 00:00:00 2001
From: Bruno Randolf <br1@einfach.org>
Date: Thu, 25 Sep 2008 16:45:10 +0200
Subject: [PATCH 1/4] [MIPS] au1000: Make sure GPIO value is zero or one

David Brownell <david-b@pacbell.net> wrote:
>       The problem is that "value" is zero-or-nonzero.
>       This code wrongly assumes it's zero-or-one.
>       Possible fix:  "((!!value) << gpio)".

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/au1000/common/gpio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/mips/au1000/common/gpio.c b/arch/mips/au1000/common/gpio.c
index 1f058434b7266..e660ddd611c46 100644
--- a/arch/mips/au1000/common/gpio.c
+++ b/arch/mips/au1000/common/gpio.c
@@ -48,7 +48,7 @@ static void au1xxx_gpio2_write(unsigned gpio, int value)
 {
 	gpio -= AU1XXX_GPIO_BASE;
 
-	gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | (value << gpio);
+	gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
 }
 
 static int au1xxx_gpio2_direction_input(unsigned gpio)
@@ -62,7 +62,7 @@ static int au1xxx_gpio2_direction_output(unsigned gpio, int value)
 {
 	gpio -= AU1XXX_GPIO_BASE;
 	gpio2->dir |= 0x01 << gpio;
-	gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | (value << gpio);
+	gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
 	return 0;
 }
 

From f4d15f1c877644a604f8c8c3d094c13f9f8bdcf2 Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Sat, 27 Sep 2008 15:05:06 +0100
Subject: [PATCH 2/4] [MIPS] IP27: Switch to dynamic interrupt routing avoding
 panic on error.

pcibios_map_irq is no way of returning an error but on IP27 an interrupt
is possibly not routable when running out of resources.  So do the
interrupt routing at pcibios_enable_device time.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/pci/pci-ip27.c | 40 +++++++++++++++++++++++++++++++---------
 1 file changed, 31 insertions(+), 9 deletions(-)

diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c
index bd78368c82bf2..f97ab14610129 100644
--- a/arch/mips/pci/pci-ip27.c
+++ b/arch/mips/pci/pci-ip27.c
@@ -142,26 +142,48 @@ int __cpuinit bridge_probe(nasid_t nasid, int widget_id, int masterwid)
  * on any one of the hubs connected to its xbow.
  */
 int __devinit pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	return 0;
+}
+
+/* Most MIPS systems have straight-forward swizzling needs.  */
+static inline u8 bridge_swizzle(u8 pin, u8 slot)
+{
+	return (((pin - 1) + slot) % 4) + 1;
+}
+
+static inline struct pci_dev *bridge_root_dev(struct pci_dev *dev)
+{
+	while (dev->bus->parent) {
+		/* Move up the chain of bridges. */
+		dev = dev->bus->self;
+	}
+
+	return dev;
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
 {
 	struct bridge_controller *bc = BRIDGE_CONTROLLER(dev->bus);
-	int irq = bc->pci_int[slot];
+	struct pci_dev *rdev = bridge_root_dev(dev);
+	int slot = PCI_SLOT(rdev->devfn);
+	int irq;
 
+	irq = bc->pci_int[slot];
 	if (irq == -1) {
-		irq = bc->pci_int[slot] = request_bridge_irq(bc);
+		irq = request_bridge_irq(bc);
 		if (irq < 0)
-			panic("Can't allocate interrupt for PCI device %s\n",
-			      pci_name(dev));
+			return irq;
+
+		bc->pci_int[slot] = irq;
 	}
 
 	irq_to_bridge[irq] = bc;
 	irq_to_slot[irq] = slot;
 
-	return irq;
-}
+	dev->irq = irq;
 
-/* Do platform specific device initialization at pci_enable_device() time */
-int pcibios_plat_dev_init(struct pci_dev *dev)
-{
 	return 0;
 }
 

From 2dc42b47a7886bdc87514990c68ecdf8de61e653 Mon Sep 17 00:00:00 2001
From: Aurelien Jarno <aurelien@aurel32.net>
Date: Sat, 27 Sep 2008 16:06:16 +0200
Subject: [PATCH 3/4] [MIPS] BCM47xx: Fix build error due to missing PCI
 functions

This patch defines pcibios_map_irq() and pcibios_plat_dev_init() for
the BCM47xx platform.

It fixes the regression introduced by commit
aab547ce0d1493d400b6468c521a0137cd8c1edf.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/pci/Makefile      |  1 +
 arch/mips/pci/pci-bcm47xx.c | 60 +++++++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 arch/mips/pci/pci-bcm47xx.c

diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index 15e01aec37fdc..c8c32f417b6ce 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_SOC_TX3927)	+= ops-tx3927.o
 obj-$(CONFIG_PCI_VR41XX)	+= ops-vr41xx.o pci-vr41xx.o
 obj-$(CONFIG_MARKEINS)		+= ops-emma2rh.o pci-emma2rh.o fixup-emma2rh.o
 obj-$(CONFIG_PCI_TX4927)	+= ops-tx4927.o
+obj-$(CONFIG_BCM47XX)		+= pci-bcm47xx.o
 
 #
 # These are still pretty much in the old state, watch, go blind.
diff --git a/arch/mips/pci/pci-bcm47xx.c b/arch/mips/pci/pci-bcm47xx.c
new file mode 100644
index 0000000000000..bea9b6cdfdbf5
--- /dev/null
+++ b/arch/mips/pci/pci-bcm47xx.c
@@ -0,0 +1,60 @@
+/*
+ *  Copyright (C) 2008 Aurelien Jarno <aurelien@aurel32.net>
+ *
+ *  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
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/ssb/ssb.h>
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	return 0;
+}
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+	int res;
+	u8 slot, pin;
+
+	res = ssb_pcibios_plat_dev_init(dev);
+	if (res < 0) {
+		printk(KERN_ALERT "PCI: Failed to init device %s\n",
+		       pci_name(dev));
+		return res;
+	}
+
+	pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+	slot = PCI_SLOT(dev->devfn);
+	res = ssb_pcibios_map_irq(dev, slot, pin);
+
+	/* IRQ-0 and IRQ-1 are software interrupts. */
+	if (res < 2) {
+		printk(KERN_ALERT "PCI: Failed to map IRQ of device %s\n",
+		       pci_name(dev));
+		return res;
+	}
+
+	dev->irq = res;
+	return 0;
+}
+

From ac82da3381fc663dbda31612a0bff60bc41676a3 Mon Sep 17 00:00:00 2001
From: Aurelien Jarno <aurelien@aurel32.net>
Date: Fri, 26 Sep 2008 22:27:11 +0200
Subject: [PATCH 4/4] [SSB] Initialise dma_mask for SSB_BUSTYPE_SSB devices

For SSB_BUSTYPE_SSB type devices, we need to initialize dma_mask using
coherent_dma_mask so that calls to dma_set_mask() succeed.

It fixes the regression on the b44 driver introduced by commit
f225763a7d6c92c4932dbd528437997078496fcc

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 drivers/ssb/main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index 87ab2443e66d4..0ffabf5c0b60d 100644
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -471,6 +471,7 @@ static int ssb_devices_register(struct ssb_bus *bus)
 #endif
 			break;
 		case SSB_BUSTYPE_SSB:
+			dev->dma_mask = &dev->coherent_dma_mask;
 			break;
 		}