Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull main powerpc updates from Ben Herrenschmidt:
 "This time around, the powerpc merges are going to be a little bit more
  complicated than usual.

  This is the main pull request with most of the work for this merge
  window.  I will describe it a bit more further down.

  There is some additional cpuidle driver work, however I haven't
  included it in this tree as it depends on some work in tip/timer-core
  which Thomas accidentally forgot to put in a topic branch.  Since I
  didn't want to carry all of that tip timer stuff in powerpc -next, I
  setup a separate branch on top of Thomas tree with just that cpuidle
  driver in it, and Stephen has been carrying that in next separately
  for a while now.  I'll send a separate pull request for it.

  Additionally, two new pieces in this tree add users for a sysfs API
  that Tejun and Greg have been deprecating in drivers-core-next.
  Thankfully Greg reverted the patch that removes the old API so this
  merge can happen cleanly, but once merged, I will send a patch
  adjusting our new code to the new API so that Greg can send you the
  removal patch.

  Now as for the content of this branch, we have a lot of perf work for
  power8 new counters including support for our new "nest" counters
  (also called 24x7) under pHyp (not natively yet).

  We have new functionality when running under the OPAL firmware
  (non-virtualized or KVM host), such as access to the firmware error
  logs and service processor dumps, system parameters and sensors, along
  with a hwmon driver for the latter.

  There's also a bunch of bug fixes accross the board, some LE fixes,
  and a nice set of selftests for validating our various types of copy
  loops.

  On the Freescale side, we see mostly new chip/board revisions, some
  clock updates, better support for machine checks and debug exceptions,
  etc..."

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (70 commits)
  powerpc/book3s: Fix CFAR clobbering issue in machine check handler.
  powerpc/compat: 32-bit little endian machine name is ppcle, not ppc
  powerpc/le: Big endian arguments for ppc_rtas()
  powerpc: Use default set of netfilter modules (CONFIG_NETFILTER_ADVANCED=n)
  powerpc/defconfigs: Enable THP in pseries defconfig
  powerpc/mm: Make sure a local_irq_disable prevent a parallel THP split
  powerpc: Rate-limit users spamming kernel log buffer
  powerpc/perf: Fix handling of L3 events with bank == 1
  powerpc/perf/hv_{gpci, 24x7}: Add documentation of device attributes
  powerpc/perf: Add kconfig option for hypervisor provided counters
  powerpc/perf: Add support for the hv 24x7 interface
  powerpc/perf: Add support for the hv gpci (get performance counter info) interface
  powerpc/perf: Add macros for defining event fields & formats
  powerpc/perf: Add a shared interface to get gpci version and capabilities
  powerpc/perf: Add 24x7 interface headers
  powerpc/perf: Add hv_gpci interface header
  powerpc: Add hvcalls for 24x7 and gpci (Get Performance Counter Info)
  sysfs: create bin_attributes under the requested group
  powerpc/perf: Enable BHRB access for EBB events
  powerpc/perf: Add BHRB constraint and IFM MMCRA handling for EBB
  ...

2 files changed, 162 insertions, 24 deletions

diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index a625dcf..3f415e2 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -22,10 +22,13 @@
 #include <linux/delay.h>
 #include <linux/string.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/bootmem.h>
 #include <linux/memblock.h>
 #include <linux/log2.h>
 #include <linux/slab.h>
+#include <linux/suspend.h>
+#include <linux/syscore_ops.h>
 #include <linux/uaccess.h>
 
 #include <asm/io.h>
@@ -868,6 +871,14 @@ u64 fsl_pci_immrbar_base(struct pci_controller *hose)
 
 		pci_bus_read_config_dword(hose->bus,
 			PCI_DEVFN(0, 0), PCI_BASE_ADDRESS_0, &base);
+
+		/*
+		 * For PEXCSRBAR, bit 3-0 indicate prefetchable and
+		 * address type. So when getting base address, these
+		 * bits should be masked
+		 */
+		base &= PCI_BASE_ADDRESS_MEM_MASK;
+
 		return base;
 	}
 #endif
@@ -1086,55 +1097,171 @@ void fsl_pci_assign_primary(void)
 	}
 }
 
-static int fsl_pci_probe(struct platform_device *pdev)
+#ifdef CONFIG_PM_SLEEP
+static irqreturn_t fsl_pci_pme_handle(int irq, void *dev_id)
 {
-	int ret;
-	struct device_node *node;
+	struct pci_controller *hose = dev_id;
+	struct ccsr_pci __iomem *pci = hose->private_data;
+	u32 dr;
 
-	node = pdev->dev.of_node;
-	ret = fsl_add_bridge(pdev, fsl_pci_primary == node);
+	dr = in_be32(&pci->pex_pme_mes_dr);
+	if (!dr)
+		return IRQ_NONE;
 
-	mpc85xx_pci_err_probe(pdev);
+	out_be32(&pci->pex_pme_mes_dr, dr);
 
-	return 0;
+	return IRQ_HANDLED;
 }
 
-#ifdef CONFIG_PM
-static int fsl_pci_resume(struct device *dev)
+static int fsl_pci_pme_probe(struct pci_controller *hose)
 {
-	struct pci_controller *hose;
-	struct resource pci_rsrc;
+	struct ccsr_pci __iomem *pci;
+	struct pci_dev *dev;
+	int pme_irq;
+	int res;
+	u16 pms;
 
-	hose = pci_find_hose_for_OF_device(dev->of_node);
-	if (!hose)
-		return -ENODEV;
+	/* Get hose's pci_dev */
+	dev = list_first_entry(&hose->bus->devices, typeof(*dev), bus_list);
+
+	/* PME Disable */
+	pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pms);
+	pms &= ~PCI_PM_CTRL_PME_ENABLE;
+	pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pms);
+
+	pme_irq = irq_of_parse_and_map(hose->dn, 0);
+	if (!pme_irq) {
+		dev_err(&dev->dev, "Failed to map PME interrupt.\n");
+
+		return -ENXIO;
+	}
+
+	res = devm_request_irq(hose->parent, pme_irq,
+			fsl_pci_pme_handle,
+			IRQF_SHARED,
+			"[PCI] PME", hose);
+	if (res < 0) {
+		dev_err(&dev->dev, "Unable to requiest irq %d for PME\n", pme_irq);
+		irq_dispose_mapping(pme_irq);
 
-	if (of_address_to_resource(dev->of_node, 0, &pci_rsrc)) {
-		dev_err(dev, "Get pci register base failed.");
 		return -ENODEV;
 	}
 
-	setup_pci_atmu(hose);
+	pci = hose->private_data;
+
+	/* Enable PTOD, ENL23D & EXL23D */
+	out_be32(&pci->pex_pme_mes_disr, 0);
+	setbits32(&pci->pex_pme_mes_disr,
+		  PME_DISR_EN_PTOD | PME_DISR_EN_ENL23D | PME_DISR_EN_EXL23D);
+
+	out_be32(&pci->pex_pme_mes_ier, 0);
+	setbits32(&pci->pex_pme_mes_ier,
+		  PME_DISR_EN_PTOD | PME_DISR_EN_ENL23D | PME_DISR_EN_EXL23D);
+
+	/* PME Enable */
+	pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pms);
+	pms |= PCI_PM_CTRL_PME_ENABLE;
+	pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pms);
 
 	return 0;
 }
 
-static const struct dev_pm_ops pci_pm_ops = {
-	.resume = fsl_pci_resume,
-};
+static void send_pme_turnoff_message(struct pci_controller *hose)
+{
+	struct ccsr_pci __iomem *pci = hose->private_data;
+	u32 dr;
+	int i;
 
-#define PCI_PM_OPS (&pci_pm_ops)
+	/* Send PME_Turn_Off Message Request */
+	setbits32(&pci->pex_pmcr, PEX_PMCR_PTOMR);
 
-#else
+	/* Wait trun off done */
+	for (i = 0; i < 150; i++) {
+		dr = in_be32(&pci->pex_pme_mes_dr);
+		if (dr) {
+			out_be32(&pci->pex_pme_mes_dr, dr);
+			break;
+		}
+
+		udelay(1000);
+	}
+}
+
+static void fsl_pci_syscore_do_suspend(struct pci_controller *hose)
+{
+	send_pme_turnoff_message(hose);
+}
+
+static int fsl_pci_syscore_suspend(void)
+{
+	struct pci_controller *hose, *tmp;
 
-#define PCI_PM_OPS NULL
+	list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
+		fsl_pci_syscore_do_suspend(hose);
 
+	return 0;
+}
+
+static void fsl_pci_syscore_do_resume(struct pci_controller *hose)
+{
+	struct ccsr_pci __iomem *pci = hose->private_data;
+	u32 dr;
+	int i;
+
+	/* Send Exit L2 State Message */
+	setbits32(&pci->pex_pmcr, PEX_PMCR_EXL2S);
+
+	/* Wait exit done */
+	for (i = 0; i < 150; i++) {
+		dr = in_be32(&pci->pex_pme_mes_dr);
+		if (dr) {
+			out_be32(&pci->pex_pme_mes_dr, dr);
+			break;
+		}
+
+		udelay(1000);
+	}
+
+	setup_pci_atmu(hose);
+}
+
+static void fsl_pci_syscore_resume(void)
+{
+	struct pci_controller *hose, *tmp;
+
+	list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
+		fsl_pci_syscore_do_resume(hose);
+}
+
+static struct syscore_ops pci_syscore_pm_ops = {
+	.suspend = fsl_pci_syscore_suspend,
+	.resume = fsl_pci_syscore_resume,
+};
 #endif
 
+void fsl_pcibios_fixup_phb(struct pci_controller *phb)
+{
+#ifdef CONFIG_PM_SLEEP
+	fsl_pci_pme_probe(phb);
+#endif
+}
+
+static int fsl_pci_probe(struct platform_device *pdev)
+{
+	struct device_node *node;
+	int ret;
+
+	node = pdev->dev.of_node;
+	ret = fsl_add_bridge(pdev, fsl_pci_primary == node);
+
+	mpc85xx_pci_err_probe(pdev);
+
+	return 0;
+}
+
 static struct platform_driver fsl_pci_driver = {
 	.driver = {
 		.name = "fsl-pci",
-		.pm = PCI_PM_OPS,
 		.of_match_table = pci_ids,
 	},
 	.probe = fsl_pci_probe,
@@ -1142,6 +1269,9 @@ static struct platform_driver fsl_pci_driver = {
 
 static int __init fsl_pci_init(void)
 {
+#ifdef CONFIG_PM_SLEEP
+	register_syscore_ops(&pci_syscore_pm_ops);
+#endif
 	return platform_driver_register(&fsl_pci_driver);
 }
 arch_initcall(fsl_pci_init);
diff --git a/arch/powerpc/sysdev/fsl_pci.h b/arch/powerpc/sysdev/fsl_pci.h
index 8d455df..c1cec77 100644
--- a/arch/powerpc/sysdev/fsl_pci.h
+++ b/arch/powerpc/sysdev/fsl_pci.h
@@ -32,6 +32,13 @@ struct platform_device;
 #define PIWAR_WRITE_SNOOP	0x00005000
 #define PIWAR_SZ_MASK          0x0000003f
 
+#define PEX_PMCR_PTOMR		0x1
+#define PEX_PMCR_EXL2S		0x2
+
+#define PME_DISR_EN_PTOD	0x00008000
+#define PME_DISR_EN_ENL23D	0x00002000
+#define PME_DISR_EN_EXL23D	0x00001000
+
 /* PCI/PCI Express outbound window reg */
 struct pci_outbound_window_regs {
 	__be32	potar;	/* 0x.0 - Outbound translation address register */
@@ -111,6 +118,7 @@ struct ccsr_pci {
 
 extern int fsl_add_bridge(struct platform_device *pdev, int is_primary);
 extern void fsl_pcibios_fixup_bus(struct pci_bus *bus);
+extern void fsl_pcibios_fixup_phb(struct pci_controller *phb);
 extern int mpc83xx_add_bridge(struct device_node *dev);
 u64 fsl_pci_immrbar_base(struct pci_controller *hose);