Merge branch 'tracking-armlt-juno-pci' into integration-linaro-vexpress64tracking-integration-linaro-vexpress-ll-20150709.0

12 files changed, 141 insertions, 58 deletions

diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index fdf706555d72..a76b802eb3f8 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c
@@ -45,7 +45,6 @@
 
 struct v2m_data {
 	spinlock_t msi_cnt_lock;
-	struct msi_controller mchip;
 	struct resource res;	/* GICv2m resource */
 	void __iomem *base;	/* GICv2m virt address */
 	u32 spi_start;		/* The SPI number that MSIs start */
@@ -218,6 +217,7 @@ static int __init gicv2m_init_one(struct device_node *node,
 {
 	int ret;
 	struct v2m_data *v2m;
+	struct irq_domain *inner_domain;
 
 	v2m = kzalloc(sizeof(struct v2m_data), GFP_KERNEL);
 	if (!v2m) {
@@ -261,19 +261,17 @@ static int __init gicv2m_init_one(struct device_node *node,
 		goto err_iounmap;
 	}
 
-	v2m->domain = irq_domain_add_tree(NULL, &gicv2m_domain_ops, v2m);
-	if (!v2m->domain) {
+	inner_domain = irq_domain_add_tree(NULL, &gicv2m_domain_ops, v2m);
+	if (!inner_domain) {
 		pr_err("Failed to create GICv2m domain\n");
 		ret = -ENOMEM;
 		goto err_free_bm;
 	}
 
-	v2m->domain->parent = parent;
-	v2m->mchip.of_node = node;
-	v2m->mchip.domain = pci_msi_create_irq_domain(node,
-						      &gicv2m_msi_domain_info,
-						      v2m->domain);
-	if (!v2m->mchip.domain) {
+	inner_domain->parent = parent;
+	v2m->domain = pci_msi_create_irq_domain(node, &gicv2m_msi_domain_info,
+						inner_domain);
+	if (!v2m->domain) {
 		pr_err("Failed to create MSI domain\n");
 		ret = -ENOMEM;
 		goto err_free_domains;
@@ -281,12 +279,6 @@ static int __init gicv2m_init_one(struct device_node *node,
 
 	spin_lock_init(&v2m->msi_cnt_lock);
 
-	ret = of_pci_msi_chip_add(&v2m->mchip);
-	if (ret) {
-		pr_err("Failed to add msi_chip.\n");
-		goto err_free_domains;
-	}
-
 	pr_info("Node %s: range[%#lx:%#lx], SPI[%d:%d]\n", node->name,
 		(unsigned long)v2m->res.start, (unsigned long)v2m->res.end,
 		v2m->spi_start, (v2m->spi_start + v2m->nr_spis));
@@ -294,10 +286,10 @@ static int __init gicv2m_init_one(struct device_node *node,
 	return 0;
 
 err_free_domains:
-	if (v2m->mchip.domain)
-		irq_domain_remove(v2m->mchip.domain);
 	if (v2m->domain)
 		irq_domain_remove(v2m->domain);
+	if (inner_domain)
+		irq_domain_remove(inner_domain);
 err_free_bm:
 	kfree(v2m->bm);
 err_iounmap:
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 1b7e155869f6..f85b7ff07728 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -54,13 +54,12 @@ struct its_collection {
 
 /*
  * The ITS structure - contains most of the infrastructure, with the
- * msi_controller, the command queue, the collections, and the list of
- * devices writing to it.
+ * top-level MSI domain, the command queue, the collections, and the
+ * list of devices writing to it.
  */
 struct its_node {
 	raw_spinlock_t		lock;
 	struct list_head	entry;
-	struct msi_controller	msi_chip;
 	struct irq_domain	*domain;
 	void __iomem		*base;
 	unsigned long		phys_base;
@@ -839,7 +838,7 @@ static int its_alloc_tables(struct its_node *its)
 			if (order >= MAX_ORDER) {
 				order = MAX_ORDER - 1;
 				pr_warn("%s: Device Table too large, reduce its page order to %u\n",
-					its->msi_chip.of_node->full_name, order);
+					its->domain->of_node->full_name, order);
 			}
 		}
 
@@ -909,7 +908,7 @@ retry_baser:
 
 		if (val != tmp) {
 			pr_err("ITS: %s: GITS_BASER%d doesn't stick: %lx %lx\n",
-			       its->msi_chip.of_node->full_name, i,
+			       its->domain->of_node->full_name, i,
 			       (unsigned long) val, (unsigned long) tmp);
 			err = -ENXIO;
 			goto out_free;
@@ -1387,6 +1386,7 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 	struct resource res;
 	struct its_node *its;
 	void __iomem *its_base;
+	struct irq_domain *inner_domain = NULL;
 	u32 val;
 	u64 baser, tmp;
 	int err;
@@ -1430,7 +1430,6 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 	INIT_LIST_HEAD(&its->its_device_list);
 	its->base = its_base;
 	its->phys_base = res.start;
-	its->msi_chip.of_node = node;
 	its->ite_size = ((readl_relaxed(its_base + GITS_TYPER) >> 4) & 0xf) + 1;
 
 	its->cmd_base = kzalloc(ITS_CMD_QUEUE_SZ, GFP_KERNEL);
@@ -1476,7 +1475,7 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 	writeq_relaxed(0, its->base + GITS_CWRITER);
 	writel_relaxed(GITS_CTLR_ENABLE, its->base + GITS_CTLR);
 
-	if (of_property_read_bool(its->msi_chip.of_node, "msi-controller")) {
+	if (of_property_read_bool(its->domain->of_node, "msi-controller")) {
 		its->domain = irq_domain_add_tree(NULL, &its_domain_ops, its);
 		if (!its->domain) {
 			err = -ENOMEM;
@@ -1485,17 +1484,13 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 
 		its->domain->parent = parent;
 
-		its->msi_chip.domain = pci_msi_create_irq_domain(node,
-								 &its_pci_msi_domain_info,
-								 its->domain);
-		if (!its->msi_chip.domain) {
+		its->domain = pci_msi_create_irq_domain(node,
+							&its_pci_msi_domain_info,
+							inner_domain);
+		if (!its->domain) {
 			err = -ENOMEM;
 			goto out_free_domains;
 		}
-
-		err = of_pci_msi_chip_add(&its->msi_chip);
-		if (err)
-			goto out_free_domains;
 	}
 
 	spin_lock(&its_lock);
@@ -1505,8 +1500,6 @@ static int its_probe(struct device_node *node, struct irq_domain *parent)
 	return 0;
 
 out_free_domains:
-	if (its->msi_chip.domain)
-		irq_domain_remove(its->msi_chip.domain);
 	if (its->domain)
 		irq_domain_remove(its->domain);
 out_free_tables:
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index d9f4498832a1..a977d9574623 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -101,6 +101,10 @@ static int legacy_pme = 0;
 module_param(legacy_pme, int, 0);
 MODULE_PARM_DESC(legacy_pme, "Legacy power management");
 
+/* Ugh!  Let the firmware tell us the hardware address */
+static int mac_address[ETH_ALEN] = { 0, };
+module_param_array(mac_address, int, NULL, 0);
+
 static const struct pci_device_id sky2_id_table[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) }, /* SK-9Sxx */
 	{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) }, /* SK-9Exx */
@@ -4811,13 +4815,21 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
 	/* try to get mac address in the following order:
 	 * 1) from device tree data
 	 * 2) from internal registers set by bootloader
+	 * 3) from the command line parameter
 	 */
 	iap = of_get_mac_address(hw->pdev->dev.of_node);
 	if (iap)
 		memcpy(dev->dev_addr, iap, ETH_ALEN);
-	else
+	else {
 		memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
 			      ETH_ALEN);
+		if (!is_valid_ether_addr(&dev->dev_addr[0])) {
+			int i;
+
+			for (i = 0; i < ETH_ALEN; i++)
+				dev->dev_addr[i] = mac_address[i];
+		}
+	}
 
 	return dev;
 }
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 73e4af400a5a..be3f631c3f75 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
 #
 obj-$(CONFIG_ALPHA) += setup-irq.o
 obj-$(CONFIG_ARM) += setup-irq.o
+obj-$(CONFIG_ARM64) += setup-irq.o
 obj-$(CONFIG_UNICORE32) += setup-irq.o
 obj-$(CONFIG_SUPERH) += setup-irq.o
 obj-$(CONFIG_MIPS) += setup-irq.o
diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig
index c132bddc03f3..675c2d1ef887 100644
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/host/Kconfig
@@ -53,7 +53,7 @@ config PCI_RCAR_GEN2_PCIE
 
 config PCI_HOST_GENERIC
 	bool "Generic PCI host controller"
-	depends on ARM && OF
+	depends on (ARM || ARM64) && OF
 	help
 	  Say Y here if you want to support a simple generic PCI host
 	  controller, such as the one emulated by kvmtool.
diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
index ba46e581db99..1631d34f500f 100644
--- a/drivers/pci/host/pci-host-generic.c
+++ b/drivers/pci/host/pci-host-generic.c
@@ -39,6 +39,9 @@ struct gen_pci_cfg_windows {
 };
 
 struct gen_pci {
+#ifdef CONFIG_ARM
+	struct pci_sys_data			sys;
+#endif
 	struct pci_host_bridge			host;
 	struct gen_pci_cfg_windows		cfg;
 	struct list_head			resources;
@@ -48,8 +51,7 @@ static void __iomem *gen_pci_map_cfg_bus_cam(struct pci_bus *bus,
 					     unsigned int devfn,
 					     int where)
 {
-	struct pci_sys_data *sys = bus->sysdata;
-	struct gen_pci *pci = sys->private_data;
+	struct gen_pci *pci = bus->sysdata;
 	resource_size_t idx = bus->number - pci->cfg.bus_range->start;
 
 	return pci->cfg.win[idx] + ((devfn << 8) | where);
@@ -64,8 +66,7 @@ static void __iomem *gen_pci_map_cfg_bus_ecam(struct pci_bus *bus,
 					      unsigned int devfn,
 					      int where)
 {
-	struct pci_sys_data *sys = bus->sysdata;
-	struct gen_pci *pci = sys->private_data;
+	struct gen_pci *pci = bus->sysdata;
 	resource_size_t idx = bus->number - pci->cfg.bus_range->start;
 
 	return pci->cfg.win[idx] + ((devfn << 12) | where);
@@ -198,11 +199,33 @@ static int gen_pci_parse_map_cfg_windows(struct gen_pci *pci)
 	return 0;
 }
 
-static int gen_pci_setup(int nr, struct pci_sys_data *sys)
+static int gen_pci_init(struct device *dev, struct gen_pci *pci)
 {
-	struct gen_pci *pci = sys->private_data;
-	list_splice_init(&pci->resources, &sys->resources);
-	return 1;
+	struct pci_bus *bus;
+
+	pci_add_flags(PCI_REASSIGN_ALL_RSRC);
+
+	bus = pci_scan_root_bus(dev, 0, &gen_pci_ops, pci, &pci->resources);
+	if (!bus) {
+		dev_err(dev, "Scanning rootbus failed");
+		return -ENODEV;
+	}
+	pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci);
+
+	if (!pci_has_flag(PCI_PROBE_ONLY)) {
+		pci_bus_size_bridges(bus);
+		pci_bus_assign_resources(bus);
+	}
+	pci_bus_add_devices(bus);
+
+	/* Configure PCI Express settings */
+	if (pci_has_flag(PCI_PROBE_ONLY)) {
+		struct pci_bus *child;
+
+		list_for_each_entry(child, &bus->children, node)
+			pcie_bus_configure_settings(child);
+	}
+	return 0;
 }
 
 static int gen_pci_probe(struct platform_device *pdev)
@@ -214,13 +237,6 @@ static int gen_pci_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct gen_pci *pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
-	struct hw_pci hw = {
-		.nr_controllers	= 1,
-		.private_data	= (void **)&pci,
-		.setup		= gen_pci_setup,
-		.map_irq	= of_irq_parse_and_map_pci,
-		.ops		= &gen_pci_ops,
-	};
 
 	if (!pci)
 		return -ENOMEM;
@@ -258,8 +274,7 @@ static int gen_pci_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	pci_common_init_dev(dev, &hw);
-	return 0;
+	return gen_pci_init(dev, pci);
 }
 
 static struct platform_driver gen_pci_driver = {
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index f66be868ad21..43bfb3c08092 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -41,8 +41,7 @@ static struct irq_domain *pci_msi_get_domain(struct pci_dev *dev)
 {
 	struct irq_domain *domain = NULL;
 
-	if (dev->bus->msi)
-		domain = dev->bus->msi->domain;
+	domain = dev_get_msi_domain(&dev->dev);
 	if (!domain)
 		domain = arch_get_pci_msi_domain(dev);
 
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index f0929934bb7a..75bfb854337e 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -9,6 +9,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 
+#include <linux/irqdomain.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/of.h>
@@ -59,3 +60,22 @@ struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus)
 		return of_node_get(bus->bridge->parent->of_node);
 	return NULL;
 }
+
+void pci_set_phb_of_msi_domain(struct pci_bus *bus)
+{
+#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+	struct device_node *np;
+
+	if (!bus->dev.of_node)
+		return;
+	/* Start looking for a phandle to an MSI controller. */
+	np = of_parse_phandle(bus->dev.of_node, "msi-parent", 0);
+	/*
+	 * If we don't have an msi-parent property, look for a domain
+	 * directly attached to the host bridge.
+	 */
+	if (!np)
+		np = bus->dev.of_node;
+	dev_set_msi_domain(&bus->dev, irq_find_host(np));
+#endif
+}
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index cefd636681b6..90281f5e03ca 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -661,6 +661,21 @@ static void pci_set_bus_speed(struct pci_bus *bus)
 	}
 }
 
+void __weak pcibios_set_phb_msi_domain(struct pci_bus *bus)
+{
+	pci_set_phb_of_msi_domain(bus);
+}
+
+static void pci_set_bus_msi_domain(struct pci_bus *bus)
+{
+	struct pci_dev *bridge = bus->self;
+
+	if (!bridge)
+		pcibios_set_phb_msi_domain(bus);
+	else
+		dev_set_msi_domain(&bus->dev, dev_get_msi_domain(&bridge->dev));
+}
+
 static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent,
 					   struct pci_dev *bridge, int busnr)
 {
@@ -714,6 +729,7 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent,
 	bridge->subordinate = child;
 
 add_dev:
+	pci_set_bus_msi_domain(child);
 	ret = device_register(&child->dev);
 	WARN_ON(ret < 0);
 
@@ -1544,6 +1560,17 @@ static void pci_init_capabilities(struct pci_dev *dev)
 	pci_enable_acs(dev);
 }
 
+static void pci_set_msi_domain(struct pci_dev *dev)
+{
+	/*
+	 * If no domain has been set through the pcibios callback,
+	 * inherit the default from the bus device.
+	 */
+	if (!dev_get_msi_domain(&dev->dev))
+		dev_set_msi_domain(&dev->dev,
+				   dev_get_msi_domain(&dev->bus->dev));
+}
+
 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
 {
 	int ret;
@@ -1585,6 +1612,9 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
 	ret = pcibios_add_device(dev);
 	WARN_ON(ret < 0);
 
+	/* Setup MSI irq domain */
+	pci_set_msi_domain(dev);
+
 	/* Notifier could use PCI capabilities */
 	dev->match_driver = false;
 	ret = device_add(&dev->dev);
@@ -1975,6 +2005,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
 	b->bridge = get_device(&bridge->dev);
 	device_enable_async_suspend(b->bridge);
 	pci_set_bus_of_node(b);
+	pci_set_bus_msi_domain(b);
 
 	if (!parent)
 		set_dev_node(b->bridge, pcibus_to_node(b));
diff --git a/include/linux/device.h b/include/linux/device.h
index 5a31bf3a4024..4421f2a5c982 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -713,6 +713,7 @@ struct device_dma_parameters {
  * 		along with subsystem-level and driver-level callbacks.
  * @pins:	For device pin management.
  *		See Documentation/pinctrl.txt for details.
+ * @msi_domain: The generic MSI domain this device is using.
  * @numa_node:	NUMA node this device is close to.
  * @dma_mask:	Dma mask (if dma'ble device).
  * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all
@@ -773,6 +774,9 @@ struct device {
 	struct dev_pm_info	power;
 	struct dev_pm_domain	*pm_domain;
 
+#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+	struct irq_domain	*msi_domain; /* MSI domain device uses */
+#endif
 #ifdef CONFIG_PINCTRL
 	struct dev_pin_info	*pins;
 #endif
@@ -860,6 +864,22 @@ static inline void set_dev_node(struct device *dev, int node)
 }
 #endif
 
+static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
+{
+#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+	return dev->msi_domain;
+#else
+	return NULL;
+#endif
+}
+
+static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d)
+{
+#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+	dev->msi_domain = d;
+#endif
+}
+
 static inline void *dev_get_drvdata(const struct device *dev)
 {
 	return dev->driver_data;
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 8ac4a68ffae2..692f217ae813 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -108,9 +108,6 @@ struct msi_controller {
 	struct device *dev;
 	struct device_node *of_node;
 	struct list_head list;
-#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
-	struct irq_domain *domain;
-#endif
 
 	int (*setup_irq)(struct msi_controller *chip, struct pci_dev *dev,
 			 struct msi_desc *desc);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 8a0321a8fb59..1026af534e1a 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1645,6 +1645,7 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev,
 int pcibios_add_device(struct pci_dev *dev);
 void pcibios_release_device(struct pci_dev *dev);
 void pcibios_penalize_isa_irq(int irq, int active);
+void pcibios_set_phb_msi_domain(struct pci_bus *bus);
 
 #ifdef CONFIG_HIBERNATE_CALLBACKS
 extern struct dev_pm_ops pcibios_pm_ops;
@@ -1846,6 +1847,7 @@ void pci_set_of_node(struct pci_dev *dev);
 void pci_release_of_node(struct pci_dev *dev);
 void pci_set_bus_of_node(struct pci_bus *bus);
 void pci_release_bus_of_node(struct pci_bus *bus);
+void pci_set_phb_of_msi_domain(struct pci_bus *bus);
 
 /* Arch may override this (weak) */
 struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus);
@@ -1868,6 +1870,7 @@ static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
 static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
 static inline struct device_node *
 pci_device_to_OF_node(const struct pci_dev *pdev) { return NULL; }
+static inline void pci_set_phb_of_msi_domain(struct pci_bus *bus) {}
 #endif  /* CONFIG_OF */
 
 #ifdef CONFIG_EEH