Merge branch 'pci/misc'

  - Remove unused Netronome NFP32xx Device IDs (Jakub Kicinski)

  - Use bitmap_zalloc() for dma_alias_mask (Andy Shevchenko)

  - Add switch fall-through annotations (Gustavo A. R. Silva)

  - Remove unused Switchtec quirk variable (Joshua Abraham)

  - Fix pci.c kernel-doc warning (Randy Dunlap)

  - Remove trivial PCI wrappers for DMA APIs (Christoph Hellwig)

  - Add Intel GPU device IDs to spurious interrupt quirk (Bin Meng)

  - Run Switchtec DMA aliasing quirk only on NTB endpoints to avoid useless
    dmesg errors (Logan Gunthorpe)

  - Update Switchtec NTB documentation (Wesley Yung)

  - Remove redundant "default n" from Kconfig (Bartlomiej Zolnierkiewicz)

* pci/misc:
  PCI: pcie: Remove redundant 'default n' from Kconfig
  NTB: switchtec_ntb: Update switchtec documentation with prerequisites for NTB
  PCI: Fix Switchtec DMA aliasing quirk dmesg noise
  PCI: Add macro for Switchtec quirk declarations
  PCI: Add Device IDs for Intel GPU "spurious interrupt" quirk
  PCI: Remove pci_set_dma_max_seg_size()
  PCI: Remove pci_set_dma_seg_boundary()
  PCI: Remove pci_unmap_addr() wrappers for DMA API
  PCI / ACPI: Mark expected switch fall-through
  PCI: Remove set but unused variable
  PCI: Fix pci.c kernel-doc parameter warning
  PCI: Allocate dma_alias_mask with bitmap_zalloc()
  PCI: Remove unused NFP32xx IDs

Documentation/switchtec.txt

@@ -23,7 +23,7 @@ The primary means of communicating with the Switchtec management firmware is
 through the Memory-mapped Remote Procedure Call (MRPC) interface.
 Commands are submitted to the interface with a 4-byte command
 identifier and up to 1KB of command specific data. The firmware will
-respond with a 4 bytes return code and up to 1KB of command specific
+respond with a 4-byte return code and up to 1KB of command-specific
 data. The interface only processes a single command at a time.
 
 
@@ -36,18 +36,18 @@ device: /dev/switchtec#, one for each management endpoint in the system.
 The char device has the following semantics:
 
 * A write must consist of at least 4 bytes and no more than 1028 bytes.
-  The first four bytes will be interpreted as the command to run and
-  the remainder will be used as the input data. A write will send the
+  The first 4 bytes will be interpreted as the Command ID and the
+  remainder will be used as the input data. A write will send the
   command to the firmware to begin processing.
 
 * Each write must be followed by exactly one read. Any double write will
   produce an error and any read that doesn't follow a write will
   produce an error.
 
 * A read will block until the firmware completes the command and return
-  the four bytes of status plus up to 1024 bytes of output data. (The
-  length will be specified by the size parameter of the read call --
-  reading less than 4 bytes will produce an error.
+  the 4-byte Command Return Value plus up to 1024 bytes of output
+  data. (The length will be specified by the size parameter of the read
+  call -- reading less than 4 bytes will produce an error.)
 
 * The poll call will also be supported for userspace applications that
   need to do other things while waiting for the command to complete.
@@ -83,10 +83,20 @@ The following IOCTLs are also supported by the device:
 Non-Transparent Bridge (NTB) Driver
 ===================================
 
-An NTB driver is provided for the switchtec hardware in switchtec_ntb.
-Currently, it only supports switches configured with exactly 2
-partitions. It also requires the following configuration settings:
+An NTB hardware driver is provided for the Switchtec hardware in
+ntb_hw_switchtec. Currently, it only supports switches configured with
+exactly 2 NT partitions and zero or more non-NT partitions. It also requires
+the following configuration settings:
 
-* Both partitions must be able to access each other's GAS spaces.
+* Both NT partitions must be able to access each other's GAS spaces.
   Thus, the bits in the GAS Access Vector under Management Settings
   must be set to support this.
+* Kernel configuration MUST include support for NTB (CONFIG_NTB needs
+  to be set)
+
+NT EP BAR 2 will be dynamically configured as a Direct Window, and
+the configuration file does not need to configure it explicitly.
+
+Please refer to Documentation/ntb.txt in Linux source tree for an overall
+understanding of the Linux NTB stack. ntb_hw_switchtec works as an NTB
+Hardware Driver in this stack.

drivers/ata/sata_inic162x.c

@@ -873,7 +873,7 @@ static int inic_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 * like others but it will lock up the whole machine HARD if
 	 * 65536 byte PRD entry is fed. Reduce maximum segment size.
 	 */
-	rc = pci_set_dma_max_seg_size(pdev, 65536 - 512);
+	rc = dma_set_max_seg_size(&pdev->dev, 65536 - 512);
 	if (rc) {
 		dev_err(&pdev->dev, "failed to set the maximum segment size\n");
 		return rc;

drivers/block/rsxx/core.c

@@ -780,7 +780,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
 		goto failed_enable;
 
 	pci_set_master(dev);
-	pci_set_dma_max_seg_size(dev, RSXX_HW_BLK_SIZE);
+	dma_set_max_seg_size(&dev->dev, RSXX_HW_BLK_SIZE);
 
 	st = pci_set_dma_mask(dev, DMA_BIT_MASK(64));
 	if (st) {

drivers/infiniband/hw/cxgb4/qp.c

@@ -99,7 +99,7 @@ static void dealloc_oc_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
 static void dealloc_host_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
 {
 	dma_free_coherent(&(rdev->lldi.pdev->dev), sq->memsize, sq->queue,
-			  pci_unmap_addr(sq, mapping));
+			  dma_unmap_addr(sq, mapping));
 }
 
 static void dealloc_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
@@ -132,7 +132,7 @@ static int alloc_host_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
 	if (!sq->queue)
 		return -ENOMEM;
 	sq->phys_addr = virt_to_phys(sq->queue);
-	pci_unmap_addr_set(sq, mapping, sq->dma_addr);
+	dma_unmap_addr_set(sq, mapping, sq->dma_addr);
 	return 0;
 }
 
@@ -2521,7 +2521,7 @@ static void free_srq_queue(struct c4iw_srq *srq, struct c4iw_dev_ucontext *uctx,
 
 	dma_free_coherent(&rdev->lldi.pdev->dev,
 			  wq->memsize, wq->queue,
-			pci_unmap_addr(wq, mapping));
+			dma_unmap_addr(wq, mapping));
 	c4iw_rqtpool_free(rdev, wq->rqt_hwaddr, wq->rqt_size);
 	kfree(wq->sw_rq);
 	c4iw_put_qpid(rdev, wq->qid, uctx);
@@ -2570,7 +2570,7 @@ static int alloc_srq_queue(struct c4iw_srq *srq, struct c4iw_dev_ucontext *uctx,
 		goto err_free_rqtpool;
 
 	memset(wq->queue, 0, wq->memsize);
-	pci_unmap_addr_set(wq, mapping, wq->dma_addr);
+	dma_unmap_addr_set(wq, mapping, wq->dma_addr);
 
 	wq->bar2_va = c4iw_bar2_addrs(rdev, wq->qid, T4_BAR2_QTYPE_EGRESS,
 				      &wq->bar2_qid,
@@ -2649,7 +2649,7 @@ static int alloc_srq_queue(struct c4iw_srq *srq, struct c4iw_dev_ucontext *uctx,
 err_free_queue:
 	dma_free_coherent(&rdev->lldi.pdev->dev,
 			  wq->memsize, wq->queue,
-			pci_unmap_addr(wq, mapping));
+			dma_unmap_addr(wq, mapping));
 err_free_rqtpool:
 	c4iw_rqtpool_free(rdev, wq->rqt_hwaddr, wq->rqt_size);
 err_free_pending_wrs:

drivers/infiniband/hw/cxgb4/t4.h

@@ -397,7 +397,7 @@ struct t4_srq_pending_wr {
 struct t4_srq {
 	union t4_recv_wr *queue;
 	dma_addr_t dma_addr;
-	DECLARE_PCI_UNMAP_ADDR(mapping);
+	DEFINE_DMA_UNMAP_ADDR(mapping);
 	struct t4_swrqe *sw_rq;
 	void __iomem *bar2_va;
 	u64 bar2_pa;

drivers/pci/pci-acpi.c

@@ -588,6 +588,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 			error = -EBUSY;
 			break;
 		}
+		/* Fall through */
 	case PCI_D0:
 	case PCI_D1:
 	case PCI_D2:

drivers/pci/pci.c

@@ -198,7 +198,7 @@ EXPORT_SYMBOL_GPL(pci_ioremap_wc_bar);
 /**
  * pci_dev_str_match_path - test if a path string matches a device
  * @dev:    the PCI device to test
- * @p:      string to match the device against
+ * @path:   string to match the device against
  * @endptr: pointer to the string after the match
  *
  * Test if a string (typically from a kernel parameter) formatted as a
@@ -5773,8 +5773,7 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode,
 void pci_add_dma_alias(struct pci_dev *dev, u8 devfn)
 {
 	if (!dev->dma_alias_mask)
-		dev->dma_alias_mask = kcalloc(BITS_TO_LONGS(U8_MAX),
-					      sizeof(long), GFP_KERNEL);
+		dev->dma_alias_mask = bitmap_zalloc(U8_MAX, GFP_KERNEL);
 	if (!dev->dma_alias_mask) {
 		pci_warn(dev, "Unable to allocate DMA alias mask\n");
 		return;

drivers/pci/pcie/Kconfig

@@ -36,7 +36,6 @@ config PCIEAER
 config PCIEAER_INJECT
 	tristate "PCI Express error injection support"
 	depends on PCIEAER
-	default n
 	help
 	  This enables PCI Express Root Port Advanced Error Reporting
 	  (AER) software error injector.
@@ -84,7 +83,6 @@ config PCIEASPM
 config PCIEASPM_DEBUG
 	bool "Debug PCI Express ASPM"
 	depends on PCIEASPM
-	default n
 	help
 	  This enables PCI Express ASPM debug support. It will add per-device
 	  interface to control ASPM.
@@ -129,7 +127,6 @@ config PCIE_PME
 config PCIE_DPC
 	bool "PCI Express Downstream Port Containment support"
 	depends on PCIEPORTBUS && PCIEAER
-	default n
 	help
 	  This enables PCI Express Downstream Port Containment (DPC)
 	  driver support.  DPC events from Root and Downstream ports
@@ -139,7 +136,6 @@ config PCIE_DPC
 
 config PCIE_PTM
 	bool "PCI Express Precision Time Measurement support"
-	default n
 	depends on PCIEPORTBUS
 	help
 	  This enables PCI Express Precision Time Measurement (PTM)

drivers/pci/probe.c

@@ -2144,7 +2144,7 @@ static void pci_release_dev(struct device *dev)
 	pcibios_release_device(pci_dev);
 	pci_bus_put(pci_dev->bus);
 	kfree(pci_dev->driver_override);
-	kfree(pci_dev->dma_alias_mask);
+	bitmap_free(pci_dev->dma_alias_mask);
 	kfree(pci_dev);
 }
 
@@ -2398,8 +2398,8 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
 	dev->dev.dma_parms = &dev->dma_parms;
 	dev->dev.coherent_dma_mask = 0xffffffffull;
 
-	pci_set_dma_max_seg_size(dev, 65536);
-	pci_set_dma_seg_boundary(dev, 0xffffffff);
+	dma_set_max_seg_size(&dev->dev, 65536);
+	dma_set_seg_boundary(&dev->dev, 0xffffffff);
 
 	/* Fix up broken headers */
 	pci_fixup_device(pci_fixup_header, dev);

drivers/pci/quirks.c

@@ -3190,7 +3190,11 @@ static void disable_igfx_irq(struct pci_dev *dev)
 
 	pci_iounmap(dev, regs);
 }
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
 
@@ -4987,7 +4991,6 @@ static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
 	void __iomem *mmio;
 	struct ntb_info_regs __iomem *mmio_ntb;
 	struct ntb_ctrl_regs __iomem *mmio_ctrl;
-	struct sys_info_regs __iomem *mmio_sys_info;
 	u64 partition_map;
 	u8 partition;
 	int pp;
@@ -5008,7 +5011,6 @@ static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
 
 	mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET;
 	mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET;
-	mmio_sys_info = mmio + SWITCHTEC_GAS_SYS_INFO_OFFSET;
 
 	partition = ioread8(&mmio_ntb->partition_id);
 
@@ -5057,59 +5059,37 @@ static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev)
 	pci_iounmap(pdev, mmio);
 	pci_disable_device(pdev);
 }
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8531,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8532,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8533,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8534,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8535,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8536,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8543,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8544,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8545,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8546,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8551,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8552,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8553,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8554,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8555,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8556,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8561,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8562,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8563,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8564,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8565,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8566,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8571,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8572,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8573,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8574,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8575,
-			quirk_switchtec_ntb_dma_alias);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MICROSEMI, 0x8576,
-			quirk_switchtec_ntb_dma_alias);
+#define SWITCHTEC_QUIRK(vid) \
+	DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \
+		PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias)
+
+SWITCHTEC_QUIRK(0x8531);  /* PFX 24xG3 */
+SWITCHTEC_QUIRK(0x8532);  /* PFX 32xG3 */
+SWITCHTEC_QUIRK(0x8533);  /* PFX 48xG3 */
+SWITCHTEC_QUIRK(0x8534);  /* PFX 64xG3 */
+SWITCHTEC_QUIRK(0x8535);  /* PFX 80xG3 */
+SWITCHTEC_QUIRK(0x8536);  /* PFX 96xG3 */
+SWITCHTEC_QUIRK(0x8541);  /* PSX 24xG3 */
+SWITCHTEC_QUIRK(0x8542);  /* PSX 32xG3 */
+SWITCHTEC_QUIRK(0x8543);  /* PSX 48xG3 */
+SWITCHTEC_QUIRK(0x8544);  /* PSX 64xG3 */
+SWITCHTEC_QUIRK(0x8545);  /* PSX 80xG3 */
+SWITCHTEC_QUIRK(0x8546);  /* PSX 96xG3 */
+SWITCHTEC_QUIRK(0x8551);  /* PAX 24XG3 */
+SWITCHTEC_QUIRK(0x8552);  /* PAX 32XG3 */
+SWITCHTEC_QUIRK(0x8553);  /* PAX 48XG3 */
+SWITCHTEC_QUIRK(0x8554);  /* PAX 64XG3 */
+SWITCHTEC_QUIRK(0x8555);  /* PAX 80XG3 */
+SWITCHTEC_QUIRK(0x8556);  /* PAX 96XG3 */
+SWITCHTEC_QUIRK(0x8561);  /* PFXL 24XG3 */
+SWITCHTEC_QUIRK(0x8562);  /* PFXL 32XG3 */
+SWITCHTEC_QUIRK(0x8563);  /* PFXL 48XG3 */
+SWITCHTEC_QUIRK(0x8564);  /* PFXL 64XG3 */
+SWITCHTEC_QUIRK(0x8565);  /* PFXL 80XG3 */
+SWITCHTEC_QUIRK(0x8566);  /* PFXL 96XG3 */
+SWITCHTEC_QUIRK(0x8571);  /* PFXI 24XG3 */
+SWITCHTEC_QUIRK(0x8572);  /* PFXI 32XG3 */
+SWITCHTEC_QUIRK(0x8573);  /* PFXI 48XG3 */
+SWITCHTEC_QUIRK(0x8574);  /* PFXI 64XG3 */
+SWITCHTEC_QUIRK(0x8575);  /* PFXI 80XG3 */
+SWITCHTEC_QUIRK(0x8576);  /* PFXI 96XG3 */

drivers/s390/net/ism_drv.c

@@ -515,8 +515,8 @@ static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (ret)
 		goto err_unmap;
 
-	pci_set_dma_seg_boundary(pdev, SZ_1M - 1);
-	pci_set_dma_max_seg_size(pdev, SZ_1M);
+	dma_set_seg_boundary(&pdev->dev, SZ_1M - 1);
+	dma_set_max_seg_size(&pdev->dev, SZ_1M);
 	pci_set_master(pdev);
 
 	ism->smcd = smcd_alloc_dev(&pdev->dev, dev_name(&pdev->dev), &ism_ops,

drivers/scsi/aacraid/linit.c

@@ -1747,7 +1747,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		shost->max_sectors = (shost->sg_tablesize * 8) + 112;
 	}
 
-	error = pci_set_dma_max_seg_size(pdev,
+	error = dma_set_max_seg_size(&pdev->dev,
 		(aac->adapter_info.options & AAC_OPT_NEW_COMM) ?
 			(shost->max_sectors << 9) : 65536);
 	if (error)

include/linux/pci-dma-compat.h

@@ -119,29 +119,11 @@ static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
 {
 	return dma_set_coherent_mask(&dev->dev, mask);
 }
-
-static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
-					   unsigned int size)
-{
-	return dma_set_max_seg_size(&dev->dev, size);
-}
-
-static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
-					   unsigned long mask)
-{
-	return dma_set_seg_boundary(&dev->dev, mask);
-}
 #else
 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
 { return -EIO; }
 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
 { return -EIO; }
-static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
-					   unsigned int size)
-{ return -EIO; }
-static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
-					   unsigned long mask)
-{ return -EIO; }
 #endif
 
 #endif