1 files changed, 0 insertions, 183 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.30/816-ssb_fix_irq_setup.patch b/target/linux/brcm47xx/patches-2.6.30/816-ssb_fix_irq_setup.patch
deleted file mode 100644
index 05c36517d7..0000000000
--- a/target/linux/brcm47xx/patches-2.6.30/816-ssb_fix_irq_setup.patch
+++ /dev/null
@@ -1,183 +0,0 @@
-the current ssb irq setup (in ssb_mipscore_init) have some problem :
-it configure some device on some irq without checking that the irq is not taken by an other device.
-
-For example in my case PCI host is on irq 0 and IPSEC on irq 3.
-The current code :
-- store in dev->irq that IPSEC irq is 3+2
-- do a set_irq 0->3 on PCI host
-
-But now IPSEC irq is not routed anymore to the mips code and dev->irq is wrong. This cause problem described in [1].
-
-This patch try to solve the problem by making set_irq configure the device we want to take the irq on the shared irq0.
-The previous example become :
-- store in dev->irq that IPSEC irq is 3+2
-- do a set_irq 0->3 on PCI host :
-  - irq 3 is already taken by IPSEC. do a set_irq 3->0 on IPSEC
-
-
-I also added some code to print the irq configuration before and after irq setup to allow easier debugging. And I add extra checking in ssb_mips_irq to report device without irq or device with not routed irq.
-
-
-[1] http://www.danm.de/files/src/bcm5365p/REPORTED_DEVICES
-
-Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr> 
---- a/drivers/ssb/driver_mipscore.c
-+++ b/drivers/ssb/driver_mipscore.c
-@@ -49,29 +49,54 @@ static const u32 ipsflag_irq_shift[] = {
- 
- static inline u32 ssb_irqflag(struct ssb_device *dev)
- {
--	return ssb_read32(dev, SSB_TPSFLAG) & SSB_TPSFLAG_BPFLAG;
-+	u32 tpsflag = ssb_read32(dev, SSB_TPSFLAG);
-+	if (tpsflag)
-+		return ssb_read32(dev, SSB_TPSFLAG) & SSB_TPSFLAG_BPFLAG;
-+	else
-+		/* not irq supported */
-+		return 0x3f;
-+}
-+
-+static struct ssb_device *find_device(struct ssb_device *rdev, int irqflag)
-+{
-+	struct ssb_bus *bus = rdev->bus;
-+	int i;
-+	for (i = 0; i < bus->nr_devices; i++) {
-+		struct ssb_device *dev;
-+		dev = &(bus->devices[i]);
-+		if (ssb_irqflag(dev) == irqflag)
-+			return dev;
-+	}
-+	return NULL;
- }
- 
- /* Get the MIPS IRQ assignment for a specified device.
-  * If unassigned, 0 is returned.
-+ * If disabled, 5 is returned.
-+ * If not supported, 6 is returned.
-  */
- unsigned int ssb_mips_irq(struct ssb_device *dev)
- {
- 	struct ssb_bus *bus = dev->bus;
-+	struct ssb_device *mdev = bus->mipscore.dev;
- 	u32 irqflag;
- 	u32 ipsflag;
- 	u32 tmp;
- 	unsigned int irq;
- 
- 	irqflag = ssb_irqflag(dev);
-+	if (irqflag == 0x3f)
-+		return 6;
- 	ipsflag = ssb_read32(bus->mipscore.dev, SSB_IPSFLAG);
- 	for (irq = 1; irq <= 4; irq++) {
- 		tmp = ((ipsflag & ipsflag_irq_mask[irq]) >> ipsflag_irq_shift[irq]);
- 		if (tmp == irqflag)
- 			break;
- 	}
--	if (irq	== 5)
--		irq = 0;
-+	if (irq	== 5) {
-+		if ((1 << irqflag) & ssb_read32(mdev, SSB_INTVEC))
-+			irq = 0;
-+	}
- 
- 	return irq;
- }
-@@ -97,25 +122,56 @@ static void set_irq(struct ssb_device *d
- 	struct ssb_device *mdev = bus->mipscore.dev;
- 	u32 irqflag = ssb_irqflag(dev);
- 
-+	BUG_ON(oldirq == 6);
-+
- 	dev->irq = irq + 2;
- 
--	ssb_dprintk(KERN_INFO PFX
--		    "set_irq: core 0x%04x, irq %d => %d\n",
--		    dev->id.coreid, oldirq, irq);
- 	/* clear the old irq */
- 	if (oldirq == 0)
- 		ssb_write32(mdev, SSB_INTVEC, (~(1 << irqflag) & ssb_read32(mdev, SSB_INTVEC)));
--	else
-+	else if (oldirq != 5)
- 		clear_irq(bus, oldirq);
- 
- 	/* assign the new one */
- 	if (irq == 0) {
- 		ssb_write32(mdev, SSB_INTVEC, ((1 << irqflag) | ssb_read32(mdev, SSB_INTVEC)));
- 	} else {
-+		u32 ipsflag = ssb_read32(mdev, SSB_IPSFLAG);
-+		if ((ipsflag & ipsflag_irq_mask[irq]) != ipsflag_irq_mask[irq]) {
-+			u32 oldipsflag = (ipsflag & ipsflag_irq_mask[irq]) >> ipsflag_irq_shift[irq];
-+			struct ssb_device *olddev = find_device(dev, oldipsflag);
-+			if (olddev)
-+				set_irq(olddev, 0);
-+		}
- 		irqflag <<= ipsflag_irq_shift[irq];
--		irqflag |= (ssb_read32(mdev, SSB_IPSFLAG) & ~ipsflag_irq_mask[irq]);
-+		irqflag |= (ipsflag & ~ipsflag_irq_mask[irq]);
- 		ssb_write32(mdev, SSB_IPSFLAG, irqflag);
- 	}
-+	ssb_dprintk(KERN_INFO PFX
-+		    "set_irq: core 0x%04x, irq %d => %d\n",
-+		    dev->id.coreid, oldirq+2, irq+2);
-+}
-+
-+static void print_irq(struct ssb_device *dev, unsigned int irq)
-+{
-+	int i;
-+	static const char *irq_name[] = {"2(S)", "3", "4", "5", "6", "D", "I"};
-+	ssb_dprintk(KERN_INFO PFX
-+		"core 0x%04x, irq :", dev->id.coreid);
-+	for (i = 0; i <= 6; i++) {
-+		ssb_dprintk(" %s%s", irq_name[i], i==irq?"*":" ");
-+	}
-+	ssb_dprintk("\n");
-+}
-+
-+static void dump_irq(struct ssb_bus *bus)
-+{
-+	int i;
-+	for (i = 0; i < bus->nr_devices; i++) {
-+		struct ssb_device *dev;
-+		dev = &(bus->devices[i]);
-+		print_irq(dev, ssb_mips_irq(dev));
-+	}
- }
- 
- static void ssb_mips_serial_init(struct ssb_mipscore *mcore)
-@@ -197,18 +253,26 @@ void ssb_mipscore_init(struct ssb_mipsco
- 	else if (bus->chipco.dev)
- 		ssb_chipco_timing_init(&bus->chipco, ns);
- 
-+	dump_irq(bus);
- 	/* Assign IRQs to all cores on the bus, start with irq line 2, because serial usually takes 1 */
- 	for (irq = 2, i = 0; i < bus->nr_devices; i++) {
-+		int mips_irq;
- 		dev = &(bus->devices[i]);
--		dev->irq = ssb_mips_irq(dev) + 2;
-+		mips_irq = ssb_mips_irq(dev);
-+		if (mips_irq > 4)
-+			dev->irq = 0;
-+		else
-+			dev->irq = mips_irq + 2;
-+		if (dev->irq > 5)
-+			continue;
- 		switch (dev->id.coreid) {
- 		case SSB_DEV_USB11_HOST:
- 			/* shouldn't need a separate irq line for non-4710, most of them have a proper
- 			 * external usb controller on the pci */
- 			if ((bus->chip_id == 0x4710) && (irq <= 4)) {
- 				set_irq(dev, irq++);
--				break;
- 			}
-+			break;
- 			/* fallthrough */
- 		case SSB_DEV_PCI:
- 		case SSB_DEV_ETHERNET:
-@@ -222,6 +286,8 @@ void ssb_mipscore_init(struct ssb_mipsco
- 			}
- 		}
- 	}
-+	ssb_dprintk(KERN_INFO PFX "after irq reconfiguration\n");
-+	dump_irq(bus);
- 
- 	ssb_mips_serial_init(mcore);
- 	ssb_mips_flash_detect(mcore);