Merge tag 'pci-v5.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration changes:

   - Add _HPX Type 3 settings support, which gives firmware more
     influence over device configuration (Alexandru Gagniuc)

   - Support fixed bus numbers from bridge Enhanced Allocation
     capabilities (Subbaraya Sundeep)

   - Add "external-facing" DT property to identify cases where we
     require IOMMU protection against untrusted devices (Jean-Philippe
     Brucker)

   - Enable PCIe services for host controller drivers that use managed
     host bridge alloc (Jean-Philippe Brucker)

   - Log PCIe port service messages with pci_dev, not the pcie_device
     (Frederick Lawler)

   - Convert pciehp from pciehp_debug module parameter to generic
     dynamic debug (Frederick Lawler)

  Peer-to-peer DMA:

   - Add whitelist of Root Complexes that support peer-to-peer DMA
     between Root Ports (Christian König)

  Native controller drivers:

   - Add PCI host bridge DMA ranges for bridges that can't DMA
     everywhere, e.g., iProc (Srinath Mannam)

   - Add Amazon Annapurna Labs PCIe host controller driver (Jonathan
     Chocron)

   - Fix Tegra MSI target allocation so DMA doesn't generate unwanted
     MSIs (Vidya Sagar)

   - Fix of_node reference leaks (Wen Yang)

   - Fix Hyper-V module unload & device removal issues (Dexuan Cui)

   - Cleanup R-Car driver (Marek Vasut)

   - Cleanup Keystone driver (Kishon Vijay Abraham I)

   - Cleanup i.MX6 driver (Andrey Smirnov)

  Significant bug fixes:

   - Reset Lenovo ThinkPad P50 GPU so nouveau works after reboot (Lyude
     Paul)

   - Fix Switchtec firmware update performance issue (Wesley Sheng)

   - Work around Pericom switch link retraining erratum (Stefan Mätje)"

* tag 'pci-v5.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (141 commits)
  MAINTAINERS: Add Karthikeyan Mitran and Hou Zhiqiang for Mobiveil PCI
  PCI: pciehp: Remove pointless MY_NAME definition
  PCI: pciehp: Remove pointless PCIE_MODULE_NAME definition
  PCI: pciehp: Remove unused dbg/err/info/warn() wrappers
  PCI: pciehp: Log messages with pci_dev, not pcie_device
  PCI: pciehp: Replace pciehp_debug module param with dyndbg
  PCI: pciehp: Remove pciehp_debug uses
  PCI/AER: Log messages with pci_dev, not pcie_device
  PCI/DPC: Log messages with pci_dev, not pcie_device
  PCI/PME: Replace dev_printk(KERN_DEBUG) with dev_info()
  PCI/AER: Replace dev_printk(KERN_DEBUG) with dev_info()
  PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc
  PCI: Replace printk(KERN_INFO) with pr_info(), etc
  PCI: Use dev_printk() when possible
  PCI: Cleanup setup-bus.c comments and whitespace
  PCI: imx6: Allow asynchronous probing
  PCI: dwc: Save root bus for driver remove hooks
  PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify code
  PCI: dwc: Free MSI in dw_pcie_host_init() error path
  PCI: dwc: Free MSI IRQ page in dw_pcie_free_msi()
  ...

1 files changed, 18 insertions, 8 deletions

diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 377f4c0b52da..b8993f2b78df 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -41,6 +41,9 @@
 #define PCIE_PORT_DEBUG0		0x728
 #define PORT_LOGIC_LTSSM_STATE_MASK	0x1f
 #define PORT_LOGIC_LTSSM_STATE_L0	0x11
+#define PCIE_PORT_DEBUG1		0x72C
+#define PCIE_PORT_DEBUG1_LINK_UP		BIT(4)
+#define PCIE_PORT_DEBUG1_LINK_IN_TRAINING	BIT(29)
 
 #define PCIE_LINK_WIDTH_SPEED_CONTROL	0x80C
 #define PORT_LOGIC_SPEED_CHANGE		BIT(17)
@@ -145,14 +148,9 @@ struct dw_pcie_host_ops {
 	int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
 			     unsigned int devfn, int where, int size, u32 val);
 	int (*host_init)(struct pcie_port *pp);
-	void (*msi_set_irq)(struct pcie_port *pp, int irq);
-	void (*msi_clear_irq)(struct pcie_port *pp, int irq);
-	phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
-	u32 (*get_msi_data)(struct pcie_port *pp, int pos);
 	void (*scan_bus)(struct pcie_port *pp);
 	void (*set_num_vectors)(struct pcie_port *pp);
 	int (*msi_host_init)(struct pcie_port *pp);
-	void (*msi_irq_ack)(int irq, struct pcie_port *pp);
 };
 
 struct pcie_port {
@@ -179,8 +177,11 @@ struct pcie_port {
 	struct irq_domain	*irq_domain;
 	struct irq_domain	*msi_domain;
 	dma_addr_t		msi_data;
+	struct page		*msi_page;
+	struct irq_chip		*msi_irq_chip;
 	u32			num_vectors;
 	u32			irq_mask[MAX_MSI_CTRLS];
+	struct pci_bus		*root_bus;
 	raw_spinlock_t		lock;
 	DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
 };
@@ -200,7 +201,7 @@ struct dw_pcie_ep_ops {
 
 struct dw_pcie_ep {
 	struct pci_epc		*epc;
-	struct dw_pcie_ep_ops	*ops;
+	const struct dw_pcie_ep_ops *ops;
 	phys_addr_t		phys_base;
 	size_t			addr_size;
 	size_t			page_size;
@@ -222,6 +223,10 @@ struct dw_pcie_ops {
 			    size_t size);
 	void	(*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
 			     size_t size, u32 val);
+	u32     (*read_dbi2)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
+			     size_t size);
+	void    (*write_dbi2)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
+			      size_t size, u32 val);
 	int	(*link_up)(struct dw_pcie *pcie);
 	int	(*start_link)(struct dw_pcie *pcie);
 	void	(*stop_link)(struct dw_pcie *pcie);
@@ -238,6 +243,7 @@ struct dw_pcie {
 	struct pcie_port	pp;
 	struct dw_pcie_ep	ep;
 	const struct dw_pcie_ops *ops;
+	unsigned int		version;
 };
 
 #define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
@@ -252,6 +258,10 @@ u32 __dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
 		       size_t size);
 void __dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
 			 size_t size, u32 val);
+u32 __dw_pcie_read_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg,
+			size_t size);
+void __dw_pcie_write_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg,
+			  size_t size, u32 val);
 int dw_pcie_link_up(struct dw_pcie *pci);
 int dw_pcie_wait_for_link(struct dw_pcie *pci);
 void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index,
@@ -295,12 +305,12 @@ static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg)
 
 static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val)
 {
-	__dw_pcie_write_dbi(pci, pci->dbi_base2, reg, 0x4, val);
+	__dw_pcie_write_dbi2(pci, pci->dbi_base2, reg, 0x4, val);
 }
 
 static inline u32 dw_pcie_readl_dbi2(struct dw_pcie *pci, u32 reg)
 {
-	return __dw_pcie_read_dbi(pci, pci->dbi_base2, reg, 0x4);
+	return __dw_pcie_read_dbi2(pci, pci->dbi_base2, reg, 0x4);
 }
 
 static inline void dw_pcie_writel_atu(struct dw_pcie *pci, u32 reg, u32 val)