Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "The bulk of the patches for the 3.13 merge window.

  Heiko spent quite a bit of work to improve the code generation for the
  kernel.  That includes the exploitation of the interlocked-access
  facility for the atomics and bitops implementation and the improvement
  for the -march and -mtune compiler settings.

  Another important change is the removal of the user_mode=home option,
  user processes now always run in primary space.  The storage keys are
  not initialized at system startup any more, with that the storage key
  removal work is complete.  For the PCI support the hibernation hooks
  have been implemented.

  And as usual cleanup and fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (62 commits)
  s390/scm_blk: fix endless loop for requests != REQ_TYPE_FS
  s390/mm,tlb: correct tlb flush on page table upgrade
  s390/mm: page_table_realloc returns failure
  s390: allow to set gcc -mtune flag
  s390/percpu: remove this_cpu_xor() implementation
  s390/vtime: correct idle time calculation
  s390/time: fix get_tod_clock_ext inline assembly
  tty/hvc_iucv: remove redundant NULL check
  s390/dasd: Write to profile data area only if it is available
  s390: convert use of typedef ctl_table to struct ctl_table
  s390/pci: cleanup function information block
  s390/pci: remove CONFIG_PCI_DEBUG dependancy
  s390/pci: message cleanup
  Update default configuration
  s390: add a couple of useful defconfigs
  s390/percpu: make use of interlocked-access facility 1 instructions
  s390/percpu: use generic percpu ops for CONFIG_32BIT
  s390/compat: make psw32_user_bits a constant value again
  s390: fix handling of runtime instrumentation psw bit
  s390: fix save and restore of the floating-point-control register
  ...

1 files changed, 62 insertions, 46 deletions

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index f17a8343e360..0c9a17780e4b 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -120,26 +120,17 @@ EXPORT_SYMBOL_GPL(pci_proc_domain);
 static int zpci_set_airq(struct zpci_dev *zdev)
 {
 	u64 req = ZPCI_CREATE_REQ(zdev->fh, 0, ZPCI_MOD_FC_REG_INT);
-	struct zpci_fib *fib;
-	int rc;
-
-	fib = (void *) get_zeroed_page(GFP_KERNEL);
-	if (!fib)
-		return -ENOMEM;
+	struct zpci_fib fib = {0};
 
-	fib->isc = PCI_ISC;
-	fib->sum = 1;		/* enable summary notifications */
-	fib->noi = airq_iv_end(zdev->aibv);
-	fib->aibv = (unsigned long) zdev->aibv->vector;
-	fib->aibvo = 0;		/* each zdev has its own interrupt vector */
-	fib->aisb = (unsigned long) zpci_aisb_iv->vector + (zdev->aisb/64)*8;
-	fib->aisbo = zdev->aisb & 63;
+	fib.isc = PCI_ISC;
+	fib.sum = 1;		/* enable summary notifications */
+	fib.noi = airq_iv_end(zdev->aibv);
+	fib.aibv = (unsigned long) zdev->aibv->vector;
+	fib.aibvo = 0;		/* each zdev has its own interrupt vector */
+	fib.aisb = (unsigned long) zpci_aisb_iv->vector + (zdev->aisb/64)*8;
+	fib.aisbo = zdev->aisb & 63;
 
-	rc = zpci_mod_fc(req, fib);
-	pr_debug("%s mpcifc returned noi: %d\n", __func__, fib->noi);
-
-	free_page((unsigned long) fib);
-	return rc;
+	return zpci_mod_fc(req, &fib);
 }
 
 struct mod_pci_args {
@@ -152,22 +143,14 @@ struct mod_pci_args {
 static int mod_pci(struct zpci_dev *zdev, int fn, u8 dmaas, struct mod_pci_args *args)
 {
 	u64 req = ZPCI_CREATE_REQ(zdev->fh, dmaas, fn);
-	struct zpci_fib *fib;
-	int rc;
-
-	/* The FIB must be available even if it's not used */
-	fib = (void *) get_zeroed_page(GFP_KERNEL);
-	if (!fib)
-		return -ENOMEM;
+	struct zpci_fib fib = {0};
 
-	fib->pba = args->base;
-	fib->pal = args->limit;
-	fib->iota = args->iota;
-	fib->fmb_addr = args->fmb_addr;
+	fib.pba = args->base;
+	fib.pal = args->limit;
+	fib.iota = args->iota;
+	fib.fmb_addr = args->fmb_addr;
 
-	rc = zpci_mod_fc(req, fib);
-	free_page((unsigned long) fib);
-	return rc;
+	return zpci_mod_fc(req, &fib);
 }
 
 /* Modify PCI: Register I/O address translation parameters */
@@ -424,7 +407,6 @@ int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 	struct msi_msg msg;
 	int rc;
 
-	pr_debug("%s: requesting %d MSI-X interrupts...", __func__, nvec);
 	if (type != PCI_CAP_ID_MSIX && type != PCI_CAP_ID_MSI)
 		return -EINVAL;
 	msi_vecs = min(nvec, ZPCI_MSI_VEC_MAX);
@@ -489,7 +471,6 @@ out_msi:
 out_si:
 	airq_iv_free_bit(zpci_aisb_iv, aisb);
 out:
-	dev_err(&pdev->dev, "register MSI failed with: %d\n", rc);
 	return rc;
 }
 
@@ -499,14 +480,10 @@ void arch_teardown_msi_irqs(struct pci_dev *pdev)
 	struct msi_desc *msi;
 	int rc;
 
-	pr_info("%s: on pdev: %p\n", __func__, pdev);
-
 	/* Disable adapter interrupts */
 	rc = zpci_clear_airq(zdev);
-	if (rc) {
-		dev_err(&pdev->dev, "deregister MSI failed with: %d\n", rc);
+	if (rc)
 		return;
-	}
 
 	/* Release MSI interrupts */
 	list_for_each_entry(msi, &pdev->msi_list, list) {
@@ -625,8 +602,11 @@ static struct resource *zpci_alloc_bus_resource(unsigned long start, unsigned lo
 	r->name = name;
 
 	rc = request_resource(&iomem_resource, r);
-	if (rc)
-		pr_debug("request resource %pR failed\n", r);
+	if (rc) {
+		kfree(r->name);
+		kfree(r);
+		return ERR_PTR(-ENOMEM);
+	}
 	return r;
 }
 
@@ -708,6 +688,47 @@ void pcibios_disable_device(struct pci_dev *pdev)
 	zdev->pdev = NULL;
 }
 
+#ifdef CONFIG_HIBERNATE_CALLBACKS
+static int zpci_restore(struct device *dev)
+{
+	struct zpci_dev *zdev = get_zdev(to_pci_dev(dev));
+	int ret = 0;
+
+	if (zdev->state != ZPCI_FN_STATE_ONLINE)
+		goto out;
+
+	ret = clp_enable_fh(zdev, ZPCI_NR_DMA_SPACES);
+	if (ret)
+		goto out;
+
+	zpci_map_resources(zdev);
+	zpci_register_ioat(zdev, 0, zdev->start_dma + PAGE_OFFSET,
+			   zdev->start_dma + zdev->iommu_size - 1,
+			   (u64) zdev->dma_table);
+
+out:
+	return ret;
+}
+
+static int zpci_freeze(struct device *dev)
+{
+	struct zpci_dev *zdev = get_zdev(to_pci_dev(dev));
+
+	if (zdev->state != ZPCI_FN_STATE_ONLINE)
+		return 0;
+
+	zpci_unregister_ioat(zdev, 0);
+	return clp_disable_fh(zdev);
+}
+
+struct dev_pm_ops pcibios_pm_ops = {
+	.thaw_noirq = zpci_restore,
+	.freeze_noirq = zpci_freeze,
+	.restore_noirq = zpci_restore,
+	.poweroff_noirq = zpci_freeze,
+};
+#endif /* CONFIG_HIBERNATE_CALLBACKS */
+
 static int zpci_scan_bus(struct zpci_dev *zdev)
 {
 	struct resource *res;
@@ -781,7 +802,6 @@ int zpci_enable_device(struct zpci_dev *zdev)
 	rc = clp_enable_fh(zdev, ZPCI_NR_DMA_SPACES);
 	if (rc)
 		goto out;
-	pr_info("Enabled fh: 0x%x fid: 0x%x\n", zdev->fh, zdev->fid);
 
 	rc = zpci_dma_init_device(zdev);
 	if (rc)
@@ -901,10 +921,6 @@ static int __init pci_base_init(void)
 	    || !test_facility(71) || !test_facility(72))
 		return 0;
 
-	pr_info("Probing PCI hardware: PCI:%d  SID:%d  AEN:%d\n",
-		test_facility(69), test_facility(70),
-		test_facility(71));
-
 	rc = zpci_debug_init();
 	if (rc)
 		goto out;