Merge tag 'pci-v5.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration changes:

   - Evaluate PCI Boot Configuration _DSM to learn if firmware wants us
     to preserve its resource assignments (Benjamin Herrenschmidt)

   - Simplify resource distribution (Nicholas Johnson)

   - Decode 32 GT/s link speed (Gustavo Pimentel)

  Virtualization:

   - Fix incorrect caching of VF config space size (Alex Williamson)

   - Fix VF driver probing sysfs knobs (Alex Williamson)

  Peer-to-peer DMA:

   - Fix dma_virt_ops check (Logan Gunthorpe)

  Altera host bridge driver:

   - Allow building as module (Ley Foon Tan)

  Armada 8K host bridge driver:

   - add PHYs support (Miquel Raynal)

  DesignWare host bridge driver:

   - Export APIs to support removable loadable module (Vidya Sagar)

   - Enable Relaxed Ordering erratum workaround only on Tegra20 &
     Tegra30 (Vidya Sagar)

  Hyper-V host bridge driver:

   - Fix use-after-free in eject (Dexuan Cui)

  Mobiveil host bridge driver:

   - Clean up and fix many issues, including non-identify mapped
     windows, 64-bit windows, multi-MSI, class code, INTx clearing (Hou
     Zhiqiang)

  Qualcomm host bridge driver:

   - Use clk bulk API for 2.4.0 controllers (Bjorn Andersson)

   - Add QCS404 support (Bjorn Andersson)

   - Assert PERST for at least 100ms (Niklas Cassel)

  R-Car host bridge driver:

   - Add r8a774a1 DT support (Biju Das)

  Tegra host bridge driver:

   - Add support for Gen2, opportunistic UpdateFC and ACK (PCIe protocol
     details) AER, GPIO-based PERST# (Manikanta Maddireddy)

   - Fix many issues, including power-on failure cases, interrupt
     masking in suspend, UPHY settings, AFI dynamic clock gating,
     pending DLL transactions (Manikanta Maddireddy)

  Xilinx host bridge driver:

   - Fix NWL Multi-MSI programming (Bharat Kumar Gogada)

  Endpoint support:

   - Fix 64bit BAR support (Alan Mikhak)

   - Fix pcitest build issues (Alan Mikhak, Andy Shevchenko)

  Bug fixes:

   - Fix NVIDIA GPU multi-function power dependencies (Abhishek Sahu)

   - Fix NVIDIA GPU HDA enablement issue (Lukas Wunner)

   - Ignore lockdep for sysfs "remove" (Marek Vasut)

  Misc:

   - Convert docs to reST (Changbin Du, Mauro Carvalho Chehab)"

* tag 'pci-v5.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (107 commits)
  PCI: Enable NVIDIA HDA controllers
  tools: PCI: Fix installation when `make tools/pci_install`
  PCI: dwc: pci-dra7xx: Fix compilation when !CONFIG_GPIOLIB
  PCI: Fix typos and whitespace errors
  PCI: mobiveil: Fix INTx interrupt clearing in mobiveil_pcie_isr()
  PCI: mobiveil: Fix infinite-loop in the INTx handling function
  PCI: mobiveil: Move PCIe PIO enablement out of inbound window routine
  PCI: mobiveil: Add upper 32-bit PCI base address setup in inbound window
  PCI: mobiveil: Add upper 32-bit CPU base address setup in outbound window
  PCI: mobiveil: Mask out hardcoded bits in inbound/outbound windows setup
  PCI: mobiveil: Clear the control fields before updating it
  PCI: mobiveil: Add configured inbound windows counter
  PCI: mobiveil: Fix the valid check for inbound and outbound windows
  PCI: mobiveil: Clean-up program_{ib/ob}_windows()
  PCI: mobiveil: Remove an unnecessary return value check
  PCI: mobiveil: Fix error return values
  PCI: mobiveil: Refactor the MEM/IO outbound window initialization
  PCI: mobiveil: Make some register updates more readable
  PCI: mobiveil: Reformat the code for readability
  dt-bindings: PCI: mobiveil: Change gpio_slave and apb_csr to optional
  ...

7 files changed, 89 insertions, 15 deletions

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index c7eef32e7739..5b8328a99b2a 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -52,7 +52,7 @@
  *                irq line disabled until the threaded handler has been run.
  * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend.  Does not guarantee
  *                   that this interrupt will wake the system from a suspended
- *                   state.  See Documentation/power/suspend-and-interrupts.txt
+ *                   state.  See Documentation/power/suspend-and-interrupts.rst
  * IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set
  * IRQF_NO_THREAD - Interrupt cannot be threaded
  * IRQF_EARLY_RESUME - Resume IRQ early during syscore instead of at device
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 09366859aac2..b2c1648f7e5d 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -16,6 +16,25 @@ typedef unsigned long kernel_ulong_t;
 
 #define PCI_ANY_ID (~0)
 
+/**
+ * struct pci_device_id - PCI device ID structure
+ * @vendor:		Vendor ID to match (or PCI_ANY_ID)
+ * @device:		Device ID to match (or PCI_ANY_ID)
+ * @subvendor:		Subsystem vendor ID to match (or PCI_ANY_ID)
+ * @subdevice:		Subsystem device ID to match (or PCI_ANY_ID)
+ * @class:		Device class, subclass, and "interface" to match.
+ *			See Appendix D of the PCI Local Bus Spec or
+ *			include/linux/pci_ids.h for a full list of classes.
+ *			Most drivers do not need to specify class/class_mask
+ *			as vendor/device is normally sufficient.
+ * @class_mask:		Limit which sub-fields of the class field are compared.
+ *			See drivers/scsi/sym53c8xx_2/ for example of usage.
+ * @driver_data:	Data private to the driver.
+ *			Most drivers don't need to use driver_data field.
+ *			Best practice is to use driver_data as an index
+ *			into a static list of equivalent device types,
+ *			instead of using it as a pointer.
+ */
 struct pci_device_id {
 	__u32 vendor, device;		/* Vendor and device ID or PCI_ANY_ID*/
 	__u32 subvendor, subdevice;	/* Subsystem ID's or PCI_ANY_ID */
@@ -257,17 +276,17 @@ struct pcmcia_device_id {
 	__u16		match_flags;
 
 	__u16		manf_id;
-	__u16 		card_id;
+	__u16		card_id;
 
-	__u8  		func_id;
+	__u8		func_id;
 
 	/* for real multi-function devices */
-	__u8  		function;
+	__u8		function;
 
 	/* for pseudo multi-function devices */
-	__u8  		device_no;
+	__u8		device_no;
 
-	__u32 		prod_id_hash[4];
+	__u32		prod_id_hash[4];
 
 	/* not matched against in kernelspace */
 	const char *	prod_id[4];
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h
index 8082b612f561..62b7fdcc661c 100644
--- a/include/linux/pci-acpi.h
+++ b/include/linux/pci-acpi.h
@@ -107,9 +107,10 @@ static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { }
 #endif
 
 extern const guid_t pci_acpi_dsm_guid;
-#define DEVICE_LABEL_DSM	0x07
-#define RESET_DELAY_DSM		0x08
-#define FUNCTION_DELAY_DSM	0x09
+#define IGNORE_PCI_BOOT_CONFIG_DSM	0x05
+#define DEVICE_LABEL_DSM		0x07
+#define RESET_DELAY_DSM			0x08
+#define FUNCTION_DELAY_DSM		0x09
 
 #else	/* CONFIG_ACPI */
 static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
diff --git a/include/linux/pci.h b/include/linux/pci.h
index dd436da7eccc..2972793e3028 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -151,6 +151,8 @@ static inline const char *pci_power_name(pci_power_t state)
 #define PCI_PM_BUS_WAIT		50
 
 /**
+ * typedef pci_channel_state_t
+ *
  * The pci_channel state describes connectivity between the CPU and
  * the PCI device.  If some PCI bus between here and the PCI device
  * has crashed or locked up, this info is reflected here.
@@ -258,6 +260,7 @@ enum pci_bus_speed {
 	PCIE_SPEED_5_0GT		= 0x15,
 	PCIE_SPEED_8_0GT		= 0x16,
 	PCIE_SPEED_16_0GT		= 0x17,
+	PCIE_SPEED_32_0GT		= 0x18,
 	PCI_SPEED_UNKNOWN		= 0xff,
 };
 
@@ -383,7 +386,7 @@ struct pci_dev {
 
 	unsigned int	is_busmaster:1;		/* Is busmaster */
 	unsigned int	no_msi:1;		/* May not use MSI */
-	unsigned int	no_64bit_msi:1; 	/* May only use 32-bit MSIs */
+	unsigned int	no_64bit_msi:1;		/* May only use 32-bit MSIs */
 	unsigned int	block_cfg_access:1;	/* Config space access blocked */
 	unsigned int	broken_parity_status:1;	/* Generates false positive parity */
 	unsigned int	irq_reroute_variant:2;	/* Needs IRQ rerouting variant */
@@ -506,6 +509,8 @@ struct pci_host_bridge {
 	unsigned int	native_shpc_hotplug:1;	/* OS may use SHPC hotplug */
 	unsigned int	native_pme:1;		/* OS may use PCIe PME */
 	unsigned int	native_ltr:1;		/* OS may use PCIe LTR */
+	unsigned int	preserve_config:1;	/* Preserve FW resource setup */
+
 	/* Resource alignment requirements */
 	resource_size_t (*align_resource)(struct pci_dev *dev,
 			const struct resource *res,
@@ -776,6 +781,50 @@ struct pci_error_handlers {
 
 
 struct module;
+
+/**
+ * struct pci_driver - PCI driver structure
+ * @node:	List of driver structures.
+ * @name:	Driver name.
+ * @id_table:	Pointer to table of device IDs the driver is
+ *		interested in.  Most drivers should export this
+ *		table using MODULE_DEVICE_TABLE(pci,...).
+ * @probe:	This probing function gets called (during execution
+ *		of pci_register_driver() for already existing
+ *		devices or later if a new device gets inserted) for
+ *		all PCI devices which match the ID table and are not
+ *		"owned" by the other drivers yet. This function gets
+ *		passed a "struct pci_dev \*" for each device whose
+ *		entry in the ID table matches the device. The probe
+ *		function returns zero when the driver chooses to
+ *		take "ownership" of the device or an error code
+ *		(negative number) otherwise.
+ *		The probe function always gets called from process
+ *		context, so it can sleep.
+ * @remove:	The remove() function gets called whenever a device
+ *		being handled by this driver is removed (either during
+ *		deregistration of the driver or when it's manually
+ *		pulled out of a hot-pluggable slot).
+ *		The remove function always gets called from process
+ *		context, so it can sleep.
+ * @suspend:	Put device into low power state.
+ * @suspend_late: Put device into low power state.
+ * @resume_early: Wake device from low power state.
+ * @resume:	Wake device from low power state.
+ *		(Please see Documentation/power/pci.rst for descriptions
+ *		of PCI Power Management and the related functions.)
+ * @shutdown:	Hook into reboot_notifier_list (kernel/sys.c).
+ *		Intended to stop any idling DMA operations.
+ *		Useful for enabling wake-on-lan (NIC) or changing
+ *		the power state of a device before reboot.
+ *		e.g. drivers/net/e100.c.
+ * @sriov_configure: Optional driver callback to allow configuration of
+ *		number of VFs to enable via sysfs "sriov_numvfs" file.
+ * @err_handler: See Documentation/PCI/pci-error-recovery.rst
+ * @groups:	Sysfs attribute groups.
+ * @driver:	Driver model structure.
+ * @dynids:	List of dynamically added device IDs.
+ */
 struct pci_driver {
 	struct list_head	node;
 	const char		*name;
@@ -2207,7 +2256,7 @@ static inline u8 pci_vpd_srdt_tag(const u8 *srdt)
 
 /**
  * pci_vpd_info_field_size - Extracts the information field length
- * @lrdt: Pointer to the beginning of an information field header
+ * @info_field: Pointer to the beginning of an information field header
  *
  * Returns the extracted information field length.
  */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 70e86148cb1e..40015609c4b5 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1112,7 +1112,7 @@
 
 #define PCI_VENDOR_ID_AL		0x10b9
 #define PCI_DEVICE_ID_AL_M1533		0x1533
-#define PCI_DEVICE_ID_AL_M1535 		0x1535
+#define PCI_DEVICE_ID_AL_M1535		0x1535
 #define PCI_DEVICE_ID_AL_M1541		0x1541
 #define PCI_DEVICE_ID_AL_M1563		0x1563
 #define PCI_DEVICE_ID_AL_M1621		0x1621
@@ -1336,6 +1336,7 @@
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP78S_SMBUS    0x0752
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE       0x0759
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_SMBUS     0x07D8
+#define PCI_DEVICE_ID_NVIDIA_GEFORCE_320M           0x08A0
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP79_SMBUS     0x0AA2
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA	    0x0D85
 
@@ -1752,7 +1753,7 @@
 #define PCI_VENDOR_ID_STALLION		0x124d
 
 /* Allied Telesyn */
-#define PCI_VENDOR_ID_AT    		0x1259
+#define PCI_VENDOR_ID_AT		0x1259
 #define PCI_SUBDEVICE_ID_AT_2700FX	0x2701
 #define PCI_SUBDEVICE_ID_AT_2701FX	0x2703
 
@@ -2550,7 +2551,7 @@
 #define PCI_DEVICE_ID_KORENIX_JETCARDF2	0x1700
 #define PCI_DEVICE_ID_KORENIX_JETCARDF3	0x17ff
 
-#define PCI_VENDOR_ID_HUAWEI         	0x19e5
+#define PCI_VENDOR_ID_HUAWEI		0x19e5
 
 #define PCI_VENDOR_ID_NETRONOME		0x19ee
 #define PCI_DEVICE_ID_NETRONOME_NFP4000	0x4000
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 283fb3defe56..3619a870eaa4 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -271,7 +271,7 @@ typedef struct pm_message {
  * actions to be performed by a device driver's callbacks generally depend on
  * the platform and subsystem the device belongs to.
  *
- * Refer to Documentation/power/runtime_pm.txt for more information about the
+ * Refer to Documentation/power/runtime_pm.rst for more information about the
  * role of the @runtime_suspend(), @runtime_resume() and @runtime_idle()
  * callbacks in device runtime power management.
  */
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 27164769d184..f28e562d7ca8 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -528,6 +528,7 @@
 #define  PCI_EXP_LNKCAP_SLS_5_0GB 0x00000002 /* LNKCAP2 SLS Vector bit 1 */
 #define  PCI_EXP_LNKCAP_SLS_8_0GB 0x00000003 /* LNKCAP2 SLS Vector bit 2 */
 #define  PCI_EXP_LNKCAP_SLS_16_0GB 0x00000004 /* LNKCAP2 SLS Vector bit 3 */
+#define  PCI_EXP_LNKCAP_SLS_32_0GB 0x00000005 /* LNKCAP2 SLS Vector bit 4 */
 #define  PCI_EXP_LNKCAP_MLW	0x000003f0 /* Maximum Link Width */
 #define  PCI_EXP_LNKCAP_ASPMS	0x00000c00 /* ASPM Support */
 #define  PCI_EXP_LNKCAP_L0SEL	0x00007000 /* L0s Exit Latency */
@@ -556,6 +557,7 @@
 #define  PCI_EXP_LNKSTA_CLS_5_0GB 0x0002 /* Current Link Speed 5.0GT/s */
 #define  PCI_EXP_LNKSTA_CLS_8_0GB 0x0003 /* Current Link Speed 8.0GT/s */
 #define  PCI_EXP_LNKSTA_CLS_16_0GB 0x0004 /* Current Link Speed 16.0GT/s */
+#define  PCI_EXP_LNKSTA_CLS_32_0GB 0x0005 /* Current Link Speed 32.0GT/s */
 #define  PCI_EXP_LNKSTA_NLW	0x03f0	/* Negotiated Link Width */
 #define  PCI_EXP_LNKSTA_NLW_X1	0x0010	/* Current Link Width x1 */
 #define  PCI_EXP_LNKSTA_NLW_X2	0x0020	/* Current Link Width x2 */
@@ -661,6 +663,7 @@
 #define  PCI_EXP_LNKCAP2_SLS_5_0GB	0x00000004 /* Supported Speed 5GT/s */
 #define  PCI_EXP_LNKCAP2_SLS_8_0GB	0x00000008 /* Supported Speed 8GT/s */
 #define  PCI_EXP_LNKCAP2_SLS_16_0GB	0x00000010 /* Supported Speed 16GT/s */
+#define  PCI_EXP_LNKCAP2_SLS_32_0GB	0x00000020 /* Supported Speed 32GT/s */
 #define  PCI_EXP_LNKCAP2_CROSSLINK	0x00000100 /* Crosslink supported */
 #define PCI_EXP_LNKCTL2		48	/* Link Control 2 */
 #define  PCI_EXP_LNKCTL2_TLS		0x000f
@@ -668,6 +671,7 @@
 #define  PCI_EXP_LNKCTL2_TLS_5_0GT	0x0002 /* Supported Speed 5GT/s */
 #define  PCI_EXP_LNKCTL2_TLS_8_0GT	0x0003 /* Supported Speed 8GT/s */
 #define  PCI_EXP_LNKCTL2_TLS_16_0GT	0x0004 /* Supported Speed 16GT/s */
+#define  PCI_EXP_LNKCTL2_TLS_32_0GT	0x0005 /* Supported Speed 32GT/s */
 #define PCI_EXP_LNKSTA2		50	/* Link Status 2 */
 #define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2	52	/* v2 endpoints with link end here */
 #define PCI_EXP_SLTCAP2		52	/* Slot Capabilities 2 */