Merge tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - move pci_uevent_ers() out of pci.h (Michael Ellerman)

 - skip ASPM common clock warning if BIOS already configured it (Sinan
   Kaya)

 - fix ASPM Coverity warning about threshold_ns (Gustavo A. R. Silva)

 - remove last user of pci_get_bus_and_slot() and the function itself
   (Sinan Kaya)

 - add decoding for 16 GT/s link speed (Jay Fang)

 - add interfaces to get max link speed and width (Tal Gilboa)

 - add pcie_bandwidth_capable() to compute max supported link bandwidth
   (Tal Gilboa)

 - add pcie_bandwidth_available() to compute bandwidth available to
   device (Tal Gilboa)

 - add pcie_print_link_status() to log link speed and whether it's
   limited (Tal Gilboa)

 - use PCI core interfaces to report when device performance may be
   limited by its slot instead of doing it in each driver (Tal Gilboa)

 - fix possible cpqphp NULL pointer dereference (Shawn Lin)

 - rescan more of the hierarchy on ACPI hotplug to fix Thunderbolt/xHCI
   hotplug (Mika Westerberg)

 - add support for PCI I/O port space that's neither directly accessible
   via CPU in/out instructions nor directly mapped into CPU physical
   memory space. This is fairly intrusive and includes minor changes to
   interfaces used for I/O space on most platforms (Zhichang Yuan, John
   Garry)

 - add support for HiSilicon Hip06/Hip07 LPC I/O space (Zhichang Yuan,
   John Garry)

 - use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas)

 - remove possible NULL pointer dereference in of_pci_bus_find_domain_nr()
   (Shawn Lin)

 - report quirk timings with dev_info (Bjorn Helgaas)

 - report quirks that take longer than 10ms (Bjorn Helgaas)

 - add and use Altera Vendor ID (Johannes Thumshirn)

 - tidy Makefiles and comments (Bjorn Helgaas)

 - don't set up INTx if MSI or MSI-X is enabled to align cris, frv,
   ia64, and mn10300 with x86 (Bjorn Helgaas)

 - move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick
   Lawler)

 - merge pcieport_if.h into portdrv.h (Bjorn Helgaas)

 - move workaround for BIOS PME issue from portdrv to PCI core (Bjorn
   Helgaas)

 - completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas)

 - remove portdrv link order dependency (Bjorn Helgaas)

 - remove support for unused VC portdrv service (Bjorn Helgaas)

 - simplify portdrv feature permission checking (Bjorn Helgaas)

 - remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn
   Helgaas)

 - remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas)

 - use cached AER capability offset (Frederick Lawler)

 - don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg)

 - rename pcie-dpc.c to dpc.c (Bjorn Helgaas)

 - use generic pci_mmap_resource_range() instead of powerpc and xtensa
   arch-specific versions (David Woodhouse)

 - support arbitrary PCI host bridge offsets on sparc (Yinghai Lu)

 - remove System and Video ROM reservations on sparc (Bjorn Helgaas)

 - probe for device reset support during enumeration instead of runtime
   (Bjorn Helgaas)

 - add ACS quirk for Ampere (née APM) root ports (Feng Kan)

 - add function 1 DMA alias quirk for Marvell 88SE9220 (Thomas
   Vincent-Cross)

 - protect device restore with device lock (Sinan Kaya)

 - handle failure of FLR gracefully (Sinan Kaya)

 - handle CRS (config retry status) after device resets (Sinan Kaya)

 - skip various config reads for SR-IOV VFs as an optimization
   (KarimAllah Ahmed)

 - consolidate VPD code in vpd.c (Bjorn Helgaas)

 - add Tegra dependency on PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)

 - add DT support for R-Car r8a7743 (Biju Das)

 - fix a PCI_EJECT vs PCI_BUS_RELATIONS race condition in Hyper-V host
   bridge driver that causes a general protection fault (Dexuan Cui)

 - fix Hyper-V host bridge hang in MSI setup on 1-vCPU VMs with SR-IOV
   (Dexuan Cui)

 - fix Hyper-V host bridge hang when ejecting a VF before setting up MSI
   (Dexuan Cui)

 - make several structures static (Fengguang Wu)

 - increase number of MSI IRQs supported by Synopsys DesignWare bridges
   from 32 to 256 (Gustavo Pimentel)

 - implemented multiplexed IRQ domain API and remove obsolete MSI IRQ
   API from DesignWare drivers (Gustavo Pimentel)

 - add Tegra power management support (Manikanta Maddireddy)

 - add Tegra loadable module support (Manikanta Maddireddy)

 - handle 64-bit BARs correctly in endpoint support (Niklas Cassel)

 - support optional regulator for HiSilicon STB (Shawn Guo)

 - use regulator bulk API for Qualcomm apq8064 (Srinivas Kandagatla)

 - support power supplies for Qualcomm msm8996 (Srinivas Kandagatla)

* tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (123 commits)
  MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver
  HISI LPC: Add ACPI support
  ACPI / scan: Do not enumerate Indirect IO host children
  ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use
  HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings
  of: Add missing I/O range exception for indirect-IO devices
  PCI: Apply the new generic I/O management on PCI IO hosts
  PCI: Add fwnode handler as input param of pci_register_io_range()
  PCI: Remove __weak tag from pci_register_io_range()
  MAINTAINERS: Add missing /drivers/pci/cadence directory entry
  fm10k: Report PCIe link properties with pcie_print_link_status()
  net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth
  net/mlx5: Report PCIe link properties with pcie_print_link_status()
  net/mlx4_core: Report PCIe link properties with pcie_print_link_status()
  PCI: Add pcie_print_link_status() to log link speed and whether it's limited
  PCI: Add pcie_bandwidth_available() to compute bandwidth available to device
  misc: pci_endpoint_test: Handle 64-bit BARs properly
  PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly
  PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing
  PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar
  ...

3 files changed, 33 insertions, 31 deletions

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 220d0f36560a..41b20edb427d 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -664,12 +664,12 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
 	printk("PCI: Scanning PBM %s\n", node->full_name);
 
 	pci_add_resource_offset(&resources, &pbm->io_space,
-				pbm->io_space.start);
+				pbm->io_offset);
 	pci_add_resource_offset(&resources, &pbm->mem_space,
-				pbm->mem_space.start);
+				pbm->mem_offset);
 	if (pbm->mem64_space.flags)
 		pci_add_resource_offset(&resources, &pbm->mem64_space,
-					pbm->mem_space.start);
+					pbm->mem64_offset);
 	pbm->busn.start = pbm->pci_first_busno;
 	pbm->busn.end	= pbm->pci_last_busno;
 	pbm->busn.flags	= IORESOURCE_BUS;
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c
index 1e10fb26fa88..38d46bcc8634 100644
--- a/arch/sparc/kernel/pci_common.c
+++ b/arch/sparc/kernel/pci_common.c
@@ -344,26 +344,6 @@ static void pci_register_legacy_regions(struct resource *io_res,
 	p->end = p->start + 0x1ffffUL;
 	p->flags = IORESOURCE_BUSY;
 	request_resource(mem_res, p);
-
-	p = kzalloc(sizeof(*p), GFP_KERNEL);
-	if (!p)
-		return;
-
-	p->name = "System ROM";
-	p->start = mem_res->start + 0xf0000UL;
-	p->end = p->start + 0xffffUL;
-	p->flags = IORESOURCE_BUSY;
-	request_resource(mem_res, p);
-
-	p = kzalloc(sizeof(*p), GFP_KERNEL);
-	if (!p)
-		return;
-
-	p->name = "Video ROM";
-	p->start = mem_res->start + 0xc0000UL;
-	p->end = p->start + 0x7fffUL;
-	p->flags = IORESOURCE_BUSY;
-	request_resource(mem_res, p);
 }
 
 static void pci_register_iommu_region(struct pci_pbm_info *pbm)
@@ -397,6 +377,8 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 	int i, saw_mem, saw_io;
 	int num_pbm_ranges;
 
+	/* Corresponding generic code in of_pci_get_host_bridge_resources() */
+
 	saw_mem = saw_io = 0;
 	pbm_ranges = of_get_property(pbm->op->dev.of_node, "ranges", &i);
 	if (!pbm_ranges) {
@@ -411,13 +393,16 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 
 	for (i = 0; i < num_pbm_ranges; i++) {
 		const struct linux_prom_pci_ranges *pr = &pbm_ranges[i];
-		unsigned long a, size;
+		unsigned long a, size, region_a;
 		u32 parent_phys_hi, parent_phys_lo;
+		u32 child_phys_mid, child_phys_lo;
 		u32 size_hi, size_lo;
 		int type;
 
 		parent_phys_hi = pr->parent_phys_hi;
 		parent_phys_lo = pr->parent_phys_lo;
+		child_phys_mid = pr->child_phys_mid;
+		child_phys_lo = pr->child_phys_lo;
 		if (tlb_type == hypervisor)
 			parent_phys_hi &= 0x0fffffff;
 
@@ -427,6 +412,8 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 		type = (pr->child_phys_hi >> 24) & 0x3;
 		a = (((unsigned long)parent_phys_hi << 32UL) |
 		     ((unsigned long)parent_phys_lo  <<  0UL));
+		region_a = (((unsigned long)child_phys_mid << 32UL) |
+		     ((unsigned long)child_phys_lo  <<  0UL));
 		size = (((unsigned long)size_hi << 32UL) |
 			((unsigned long)size_lo  <<  0UL));
 
@@ -441,6 +428,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 			pbm->io_space.start = a;
 			pbm->io_space.end = a + size - 1UL;
 			pbm->io_space.flags = IORESOURCE_IO;
+			pbm->io_offset = a - region_a;
 			saw_io = 1;
 			break;
 
@@ -449,6 +437,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 			pbm->mem_space.start = a;
 			pbm->mem_space.end = a + size - 1UL;
 			pbm->mem_space.flags = IORESOURCE_MEM;
+			pbm->mem_offset = a - region_a;
 			saw_mem = 1;
 			break;
 
@@ -457,6 +446,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 			pbm->mem64_space.start = a;
 			pbm->mem64_space.end = a + size - 1UL;
 			pbm->mem64_space.flags = IORESOURCE_MEM;
+			pbm->mem64_offset = a - region_a;
 			saw_mem = 1;
 			break;
 
@@ -472,14 +462,22 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 		prom_halt();
 	}
 
-	printk("%s: PCI IO[%llx] MEM[%llx]",
-	       pbm->name,
-	       pbm->io_space.start,
-	       pbm->mem_space.start);
+	if (pbm->io_space.flags)
+		printk("%s: PCI IO %pR offset %llx\n",
+		       pbm->name, &pbm->io_space, pbm->io_offset);
+	if (pbm->mem_space.flags)
+		printk("%s: PCI MEM %pR offset %llx\n",
+		       pbm->name, &pbm->mem_space, pbm->mem_offset);
+	if (pbm->mem64_space.flags && pbm->mem_space.flags) {
+		if (pbm->mem64_space.start <= pbm->mem_space.end)
+			pbm->mem64_space.start = pbm->mem_space.end + 1;
+		if (pbm->mem64_space.start > pbm->mem64_space.end)
+			pbm->mem64_space.flags = 0;
+	}
+
 	if (pbm->mem64_space.flags)
-		printk(" MEM64[%llx]",
-		       pbm->mem64_space.start);
-	printk("\n");
+		printk("%s: PCI MEM64 %pR offset %llx\n",
+		       pbm->name, &pbm->mem64_space, pbm->mem64_offset);
 
 	pbm->io_space.name = pbm->mem_space.name = pbm->name;
 	pbm->mem64_space.name = pbm->name;
diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h
index ac172961d276..4e3d15189fa9 100644
--- a/arch/sparc/kernel/pci_impl.h
+++ b/arch/sparc/kernel/pci_impl.h
@@ -100,6 +100,10 @@ struct pci_pbm_info {
 	struct resource			mem_space;
 	struct resource			mem64_space;
 	struct resource			busn;
+	/* offset */
+	resource_size_t			io_offset;
+	resource_size_t			mem_offset;
+	resource_size_t			mem64_offset;
 
 	/* Base of PCI Config space, can be per-PBM or shared. */
 	unsigned long			config_space;