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authorLinus Torvalds <torvalds@linux-foundation.org>2022-08-05 05:30:35 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-08-05 05:30:35 +0300
commiteff0cb3d91c06acbb957be1134a07afa2c4978e3 (patch)
tree2e5722e5fe29172b7ff2ad7583ff5cf8deda9d31 /arch
parent31be1d0fbd950395701d9fd47d8fb1f99c996f61 (diff)
parentc4f36c3ab065065a87d641ca2fd5d5c4eb2bfa82 (diff)
downloadlinux-eff0cb3d91c06acbb957be1134a07afa2c4978e3.tar.xz
Merge tag 'pci-v5.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas: "Enumeration: - Consolidate duplicated 'next function' scanning and extend to allow 'isolated functions' on s390, similar to existing hypervisors (Niklas Schnelle) Resource management: - Implement pci_iobar_pfn() for sparc, which allows us to remove the sparc-specific pci_mmap_page_range() and pci_mmap_resource_range(). This removes the ability to map the entire PCI I/O space using /proc/bus/pci, but we believe that's already been broken since v2.6.28 (Arnd Bergmann) - Move common PCI definitions to asm-generic/pci.h and rework others to be be more specific and more encapsulated in arches that need them (Stafford Horne) Power management: - Convert drivers to new *_PM_OPS macros to avoid need for '#ifdef CONFIG_PM_SLEEP' or '__maybe_unused' (Bjorn Helgaas) Virtualization: - Add ACS quirk for Broadcom BCM5750x multifunction NICs that isolate the functions but don't advertise an ACS capability (Pavan Chebbi) Error handling: - Clear PCI Status register during enumeration in case firmware left errors logged (Kai-Heng Feng) - When we have native control of AER, enable error reporting for all devices that support AER. Previously only a few drivers enabled this (Stefan Roese) - Keep AER error reporting enabled for switches. Previously we enabled this during enumeration but immediately disabled it (Stefan Roese) - Iterate over error counters instead of error strings to avoid printing junk in AER sysfs counters (Mohamed Khalfella) ASPM: - Remove pcie_aspm_pm_state_change() so ASPM config changes, e.g., via sysfs, are not lost across power state changes (Kai-Heng Feng) Endpoint framework: - Don't stop an EPC when unbinding an EPF from it (Shunsuke Mie) Endpoint embedded DMA controller driver: - Simplify and clean up support for the DesignWare embedded DMA (eDMA) controller (Frank Li, Serge Semin) Broadcom STB PCIe controller driver: - Avoid config space accesses when link is down because we can't recover from the CPU aborts these cause (Jim Quinlan) - Look for power regulators described under Root Ports in DT and enable them before scanning the secondary bus (Jim Quinlan) - Disable/enable regulators in suspend/resume (Jim Quinlan) Freescale i.MX6 PCIe controller driver: - Simplify and clean up clock and PHY management (Richard Zhu) - Disable/enable regulators in suspend/resume (Richard Zhu) - Set PCIE_DBI_RO_WR_EN before writing DBI registers (Richard Zhu) - Allow speeds faster than Gen2 (Richard Zhu) - Make link being down a non-fatal error so controller probe doesn't fail if there are no Endpoints connected (Richard Zhu) Loongson PCIe controller driver: - Add ACPI and MCFG support for Loongson LS7A (Huacai Chen) - Avoid config reads to non-existent LS2K/LS7A devices because a hardware defect causes machine hangs (Huacai Chen) - Work around LS7A integrated devices that report incorrect Interrupt Pin values (Jianmin Lv) Marvell Aardvark PCIe controller driver: - Add support for AER and Slot capability on emulated bridge (Pali Rohár) MediaTek PCIe controller driver: - Add Airoha EN7532 to DT binding (John Crispin) - Allow building of driver for ARCH_AIROHA (Felix Fietkau) MediaTek PCIe Gen3 controller driver: - Print decoded LTSSM state when the link doesn't come up (Jianjun Wang) NVIDIA Tegra194 PCIe controller driver: - Convert DT binding to json-schema (Vidya Sagar) - Add DT bindings and driver support for Tegra234 Root Port and Endpoint mode (Vidya Sagar) - Fix some Root Port interrupt handling issues (Vidya Sagar) - Set default Max Payload Size to 256 bytes (Vidya Sagar) - Fix Data Link Feature capability programming (Vidya Sagar) - Extend Endpoint mode support to devices beyond Controller-5 (Vidya Sagar) Qualcomm PCIe controller driver: - Rework clock, reset, PHY power-on ordering to avoid hangs and improve consistency (Robert Marko, Christian Marangi) - Move pipe_clk handling to PHY drivers (Dmitry Baryshkov) - Add IPQ60xx support (Selvam Sathappan Periakaruppan) - Allow ASPM L1 and substates for 2.7.0 (Krishna chaitanya chundru) - Add support for more than 32 MSI interrupts (Dmitry Baryshkov) Renesas R-Car PCIe controller driver: - Convert DT binding to json-schema (Herve Codina) - Add Renesas RZ/N1D (R9A06G032) to rcar-gen2 DT binding and driver (Herve Codina) Samsung Exynos PCIe controller driver: - Fix phy-exynos-pcie driver so it follows the 'phy_init() before phy_power_on()' PHY programming model (Marek Szyprowski) Synopsys DesignWare PCIe controller driver: - Simplify and clean up the DWC core extensively (Serge Semin) - Fix an issue with programming the ATU for regions that cross a 4GB boundary (Serge Semin) - Enable the CDM check if 'snps,enable-cdm-check' exists; previously we skipped it if 'num-lanes' was absent (Serge Semin) - Allocate a 32-bit DMA-able page to be MSI target instead of using a driver data structure that may not be addressable with 32-bit address (Will McVicker) - Add DWC core support for more than 32 MSI interrupts (Dmitry Baryshkov) Xilinx Versal CPM PCIe controller driver: - Add DT binding and driver support for Versal CPM5 Gen5 Root Port (Bharat Kumar Gogada)" * tag 'pci-v5.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (150 commits) PCI: imx6: Support more than Gen2 speed link mode PCI: imx6: Set PCIE_DBI_RO_WR_EN before writing DBI registers PCI: imx6: Reformat suspend callback to keep symmetric with resume PCI: imx6: Move the imx6_pcie_ltssm_disable() earlier PCI: imx6: Disable clocks in reverse order of enable PCI: imx6: Do not hide PHY driver callbacks and refine the error handling PCI: imx6: Reduce resume time by only starting link if it was up before suspend PCI: imx6: Mark the link down as non-fatal error PCI: imx6: Move regulator enable out of imx6_pcie_deassert_core_reset() PCI: imx6: Turn off regulator when system is in suspend mode PCI: imx6: Call host init function directly in resume PCI: imx6: Disable i.MX6QDL clock when disabling ref clocks PCI: imx6: Propagate .host_init() errors to caller PCI: imx6: Collect clock enables in imx6_pcie_clk_enable() PCI: imx6: Factor out ref clock disable to match enable PCI: imx6: Move imx6_pcie_clk_disable() earlier PCI: imx6: Move imx6_pcie_enable_ref_clk() earlier PCI: imx6: Move PHY management functions together PCI: imx6: Move imx6_pcie_grp_offset(), imx6_pcie_configure_type() earlier PCI: imx6: Convert to NOIRQ_SYSTEM_SLEEP_PM_OPS() ...
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/include/asm/dma.h9
-rw-r--r--arch/alpha/include/asm/pci.h6
-rw-r--r--arch/arc/include/asm/dma.h5
-rw-r--r--arch/arm/include/asm/dma.h6
-rw-r--r--arch/arm/include/asm/pci.h5
-rw-r--r--arch/arm64/include/asm/pci.h18
-rw-r--r--arch/csky/include/asm/pci.h23
-rw-r--r--arch/ia64/include/asm/dma.h2
-rw-r--r--arch/ia64/include/asm/pci.h6
-rw-r--r--arch/m68k/include/asm/dma.h6
-rw-r--r--arch/m68k/include/asm/pci.h2
-rw-r--r--arch/microblaze/include/asm/dma.h6
-rw-r--r--arch/mips/include/asm/dma.h8
-rw-r--r--arch/mips/include/asm/pci.h6
-rw-r--r--arch/parisc/include/asm/dma.h6
-rw-r--r--arch/parisc/include/asm/pci.h5
-rw-r--r--arch/powerpc/include/asm/dma.h6
-rw-r--r--arch/powerpc/include/asm/pci.h1
-rw-r--r--arch/riscv/include/asm/pci.h31
-rw-r--r--arch/s390/include/asm/dma.h6
-rw-r--r--arch/s390/include/asm/pci.h1
-rw-r--r--arch/s390/pci/pci_bus.c82
-rw-r--r--arch/sh/include/asm/dma.h6
-rw-r--r--arch/sh/include/asm/pci.h6
-rw-r--r--arch/sparc/include/asm/dma.h8
-rw-r--r--arch/sparc/include/asm/pci.h10
-rw-r--r--arch/sparc/kernel/pci.c149
-rw-r--r--arch/um/include/asm/pci.h24
-rw-r--r--arch/x86/include/asm/dma.h8
-rw-r--r--arch/x86/include/asm/pci.h3
-rw-r--r--arch/x86/kernel/cpu/cyrix.c1
-rw-r--r--arch/xtensa/include/asm/dma.h7
-rw-r--r--arch/xtensa/include/asm/pci.h3
33 files changed, 36 insertions, 435 deletions
diff --git a/arch/alpha/include/asm/dma.h b/arch/alpha/include/asm/dma.h
index 28610ea7786d..a04d76b96089 100644
--- a/arch/alpha/include/asm/dma.h
+++ b/arch/alpha/include/asm/dma.h
@@ -365,13 +365,4 @@ extern void free_dma(unsigned int dmanr); /* release it again */
#define KERNEL_HAVE_CHECK_DMA
extern int check_dma(unsigned int dmanr);
-/* From PCI */
-
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
-
#endif /* _ASM_DMA_H */
diff --git a/arch/alpha/include/asm/pci.h b/arch/alpha/include/asm/pci.h
index cf6bc1e64d66..6312656279d7 100644
--- a/arch/alpha/include/asm/pci.h
+++ b/arch/alpha/include/asm/pci.h
@@ -56,12 +56,6 @@ struct pci_controller {
/* IOMMU controls. */
-/* TODO: integrate with include/asm-generic/pci.h ? */
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- return channel ? 15 : 14;
-}
-
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
static inline int pci_proc_domain(struct pci_bus *bus)
diff --git a/arch/arc/include/asm/dma.h b/arch/arc/include/asm/dma.h
index 5b744f4b10a7..02431027ed2f 100644
--- a/arch/arc/include/asm/dma.h
+++ b/arch/arc/include/asm/dma.h
@@ -7,10 +7,5 @@
#define ASM_ARC_DMA_H
#define MAX_DMA_ADDRESS 0xC0000000
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy 0
-#endif
#endif
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 45180a2cc47c..05f29a72150b 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -143,10 +143,4 @@ extern int get_dma_residue(unsigned int chan);
#endif /* CONFIG_ISA_DMA_API */
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* __ASM_ARM_DMA_H */
diff --git a/arch/arm/include/asm/pci.h b/arch/arm/include/asm/pci.h
index 68e6f25784a4..5916b88d4c94 100644
--- a/arch/arm/include/asm/pci.h
+++ b/arch/arm/include/asm/pci.h
@@ -22,11 +22,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
#define HAVE_PCI_MMAP
#define ARCH_GENERIC_PCI_MMAP_RESOURCE
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- return channel ? 15 : 14;
-}
-
extern void pcibios_report_status(unsigned int status_mask, int warn);
#endif /* __KERNEL__ */
diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h
index b33ca260e3c9..016eb6b46dc0 100644
--- a/arch/arm64/include/asm/pci.h
+++ b/arch/arm64/include/asm/pci.h
@@ -9,7 +9,6 @@
#include <asm/io.h>
#define PCIBIOS_MIN_IO 0x1000
-#define PCIBIOS_MIN_MEM 0
/*
* Set to 1 if the kernel should re-assign all PCI bus numbers
@@ -18,21 +17,8 @@
(pci_has_flag(PCI_REASSIGN_ALL_BUS))
#define arch_can_pci_mmap_wc() 1
-#define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
-extern int isa_dma_bridge_buggy;
-
-#ifdef CONFIG_PCI
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- /* no legacy IRQ on arm64 */
- return -ENODEV;
-}
-
-static inline int pci_proc_domain(struct pci_bus *bus)
-{
- return 1;
-}
-#endif /* CONFIG_PCI */
+/* Generic PCI */
+#include <asm-generic/pci.h>
#endif /* __ASM_PCI_H */
diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
index ebc765b1f78b..42724c630d30 100644
--- a/arch/csky/include/asm/pci.h
+++ b/arch/csky/include/asm/pci.h
@@ -9,26 +9,7 @@
#include <asm/io.h>
-#define PCIBIOS_MIN_IO 0
-#define PCIBIOS_MIN_MEM 0
-
-/* C-SKY shim does not initialize PCI bus */
-#define pcibios_assign_all_busses() 1
-
-extern int isa_dma_bridge_buggy;
-
-#ifdef CONFIG_PCI
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- /* no legacy IRQ on csky */
- return -ENODEV;
-}
-
-static inline int pci_proc_domain(struct pci_bus *bus)
-{
- /* always show the domain in /proc */
- return 1;
-}
-#endif /* CONFIG_PCI */
+/* Generic PCI */
+#include <asm-generic/pci.h>
#endif /* __ASM_CSKY_PCI_H */
diff --git a/arch/ia64/include/asm/dma.h b/arch/ia64/include/asm/dma.h
index 59625e9c1f9c..eaed2626ffda 100644
--- a/arch/ia64/include/asm/dma.h
+++ b/arch/ia64/include/asm/dma.h
@@ -12,8 +12,6 @@
extern unsigned long MAX_DMA_ADDRESS;
-extern int isa_dma_bridge_buggy;
-
#define free_dma(x)
#endif /* _ASM_IA64_DMA_H */
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index 8c163d1d0189..fa8f545c24c9 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -63,10 +63,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
return (pci_domain_nr(bus) != 0);
}
-#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
-}
-
#endif /* _ASM_IA64_PCI_H */
diff --git a/arch/m68k/include/asm/dma.h b/arch/m68k/include/asm/dma.h
index f6c5e0dfb4e5..1c8d9c5bc2fa 100644
--- a/arch/m68k/include/asm/dma.h
+++ b/arch/m68k/include/asm/dma.h
@@ -6,10 +6,4 @@
bootmem allocator (but this should do it for this) */
#define MAX_DMA_ADDRESS PAGE_OFFSET
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* _M68K_DMA_H */
diff --git a/arch/m68k/include/asm/pci.h b/arch/m68k/include/asm/pci.h
index 5a4bc223743b..ccdfa0dc8413 100644
--- a/arch/m68k/include/asm/pci.h
+++ b/arch/m68k/include/asm/pci.h
@@ -2,8 +2,6 @@
#ifndef _ASM_M68K_PCI_H
#define _ASM_M68K_PCI_H
-#include <asm-generic/pci.h>
-
#define pcibios_assign_all_busses() 1
#define PCIBIOS_MIN_IO 0x00000100
diff --git a/arch/microblaze/include/asm/dma.h b/arch/microblaze/include/asm/dma.h
index f801582be912..7484c9eb66c4 100644
--- a/arch/microblaze/include/asm/dma.h
+++ b/arch/microblaze/include/asm/dma.h
@@ -9,10 +9,4 @@
/* Virtual address corresponding to last available physical memory address. */
#define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1)
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* _ASM_MICROBLAZE_DMA_H */
diff --git a/arch/mips/include/asm/dma.h b/arch/mips/include/asm/dma.h
index be726b943530..d6186e6bea7e 100644
--- a/arch/mips/include/asm/dma.h
+++ b/arch/mips/include/asm/dma.h
@@ -307,12 +307,4 @@ static __inline__ int get_dma_residue(unsigned int dmanr)
extern int request_dma(unsigned int dmanr, const char * device_id); /* reserve a DMA channel */
extern void free_dma(unsigned int dmanr); /* release it again */
-/* From PCI */
-
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* _ASM_DMA_H */
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 9ffc8192adae..3fd6e22c108b 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -139,10 +139,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
/* Do platform specific device initialization at pci_enable_device() time */
extern int pcibios_plat_dev_init(struct pci_dev *dev);
-/* Chances are this interrupt is wired PC-style ... */
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- return channel ? 15 : 14;
-}
-
#endif /* _ASM_PCI_H */
diff --git a/arch/parisc/include/asm/dma.h b/arch/parisc/include/asm/dma.h
index eea80ed34e6d..9e8c101de902 100644
--- a/arch/parisc/include/asm/dma.h
+++ b/arch/parisc/include/asm/dma.h
@@ -176,10 +176,4 @@ static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)
#define free_dma(dmanr)
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* _ASM_DMA_H */
diff --git a/arch/parisc/include/asm/pci.h b/arch/parisc/include/asm/pci.h
index f14465b84de4..127ed5021ae3 100644
--- a/arch/parisc/include/asm/pci.h
+++ b/arch/parisc/include/asm/pci.h
@@ -162,11 +162,6 @@ extern void pcibios_init_bridge(struct pci_dev *);
#define PCIBIOS_MIN_IO 0x10
#define PCIBIOS_MIN_MEM 0x1000 /* NBPG - but pci/setup-res.c dies */
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- return channel ? 15 : 14;
-}
-
#define HAVE_PCI_MMAP
#define ARCH_GENERIC_PCI_MMAP_RESOURCE
diff --git a/arch/powerpc/include/asm/dma.h b/arch/powerpc/include/asm/dma.h
index 6161a9596196..d97c66d9ae34 100644
--- a/arch/powerpc/include/asm/dma.h
+++ b/arch/powerpc/include/asm/dma.h
@@ -340,11 +340,5 @@ extern int request_dma(unsigned int dmanr, const char *device_id);
/* release it again */
extern void free_dma(unsigned int dmanr);
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_DMA_H */
diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
index 915d6ee4b40a..f9da506751bb 100644
--- a/arch/powerpc/include/asm/pci.h
+++ b/arch/powerpc/include/asm/pci.h
@@ -39,7 +39,6 @@
#define pcibios_assign_all_busses() \
(pci_has_flag(PCI_REASSIGN_ALL_BUS))
-#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
if (ppc_md.pci_get_legacy_ide_irq)
diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
index 7fd52a30e605..6ef4a1426194 100644
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
@@ -12,31 +12,7 @@
#include <asm/io.h>
-#define PCIBIOS_MIN_IO 0
-#define PCIBIOS_MIN_MEM 0
-
-/* RISC-V shim does not initialize PCI bus */
-#define pcibios_assign_all_busses() 1
-
-#define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
-
-extern int isa_dma_bridge_buggy;
-
-#ifdef CONFIG_PCI
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- /* no legacy IRQ on risc-v */
- return -ENODEV;
-}
-
-static inline int pci_proc_domain(struct pci_bus *bus)
-{
- /* always show the domain in /proc */
- return 1;
-}
-
-#ifdef CONFIG_NUMA
-
+#if defined(CONFIG_PCI) && defined(CONFIG_NUMA)
static inline int pcibus_to_node(struct pci_bus *bus)
{
return dev_to_node(&bus->dev);
@@ -46,8 +22,9 @@ static inline int pcibus_to_node(struct pci_bus *bus)
cpu_all_mask : \
cpumask_of_node(pcibus_to_node(bus)))
#endif
-#endif /* CONFIG_NUMA */
+#endif /* defined(CONFIG_PCI) && defined(CONFIG_NUMA) */
-#endif /* CONFIG_PCI */
+/* Generic PCI */
+#include <asm-generic/pci.h>
#endif /* _ASM_RISCV_PCI_H */
diff --git a/arch/s390/include/asm/dma.h b/arch/s390/include/asm/dma.h
index 6f26f35d4a71..dec1c4ce628c 100644
--- a/arch/s390/include/asm/dma.h
+++ b/arch/s390/include/asm/dma.h
@@ -11,10 +11,4 @@
*/
#define MAX_DMA_ADDRESS 0x80000000
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* _ASM_S390_DMA_H */
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 85eb0ef9d4c3..7b4cdadbc023 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -6,7 +6,6 @@
#include <linux/mutex.h>
#include <linux/iommu.h>
#include <linux/pci_hotplug.h>
-#include <asm-generic/pci.h>
#include <asm/pci_clp.h>
#include <asm/pci_debug.h>
#include <asm/pci_insn.h>
diff --git a/arch/s390/pci/pci_bus.c b/arch/s390/pci/pci_bus.c
index 5d77acbd1c87..6a8da1b742ae 100644
--- a/arch/s390/pci/pci_bus.c
+++ b/arch/s390/pci/pci_bus.c
@@ -145,9 +145,6 @@ int zpci_bus_scan_bus(struct zpci_bus *zbus)
struct zpci_dev *zdev;
int devfn, rc, ret = 0;
- if (!zbus->function[0])
- return 0;
-
for (devfn = 0; devfn < ZPCI_FUNCTIONS_PER_BUS; devfn++) {
zdev = zbus->function[devfn];
if (zdev && zdev->state == ZPCI_FN_STATE_CONFIGURED) {
@@ -184,26 +181,26 @@ void zpci_bus_scan_busses(void)
/* zpci_bus_create_pci_bus - Create the PCI bus associated with this zbus
* @zbus: the zbus holding the zdevices
- * @f0: function 0 of the bus
+ * @fr: PCI root function that will determine the bus's domain, and bus speeed
* @ops: the pci operations
*
- * Function zero is taken as a parameter as this is used to determine the
- * domain, multifunction property and maximum bus speed of the entire bus.
+ * The PCI function @fr determines the domain (its UID), multifunction property
+ * and maximum bus speed of the entire bus.
*
* Return: 0 on success, an error code otherwise
*/
-static int zpci_bus_create_pci_bus(struct zpci_bus *zbus, struct zpci_dev *f0, struct pci_ops *ops)
+static int zpci_bus_create_pci_bus(struct zpci_bus *zbus, struct zpci_dev *fr, struct pci_ops *ops)
{
struct pci_bus *bus;
int domain;
- domain = zpci_alloc_domain((u16)f0->uid);
+ domain = zpci_alloc_domain((u16)fr->uid);
if (domain < 0)
return domain;
zbus->domain_nr = domain;
- zbus->multifunction = f0->rid_available;
- zbus->max_bus_speed = f0->max_bus_speed;
+ zbus->multifunction = fr->rid_available;
+ zbus->max_bus_speed = fr->max_bus_speed;
/*
* Note that the zbus->resources are taken over and zbus->resources
@@ -303,47 +300,6 @@ void pcibios_bus_add_device(struct pci_dev *pdev)
}
}
-/* zpci_bus_create_hotplug_slots - Add hotplug slot(s) for device added to bus
- * @zdev: the zPCI device that was newly added
- *
- * Add the hotplug slot(s) for the newly added PCI function. Normally this is
- * simply the slot for the function itself. If however we are adding the
- * function 0 on a zbus, it might be that we already registered functions on
- * that zbus but could not create their hotplug slots yet so add those now too.
- *
- * Return: 0 on success, an error code otherwise
- */
-static int zpci_bus_create_hotplug_slots(struct zpci_dev *zdev)
-{
- struct zpci_bus *zbus = zdev->zbus;
- int devfn, rc = 0;
-
- rc = zpci_init_slot(zdev);
- if (rc)
- return rc;
- zdev->has_hp_slot = 1;
-
- if (zdev->devfn == 0 && zbus->multifunction) {
- /* Now that function 0 is there we can finally create the
- * hotplug slots for those functions with devfn != 0 that have
- * been parked in zbus->function[] waiting for us to be able to
- * create the PCI bus.
- */
- for (devfn = 1; devfn < ZPCI_FUNCTIONS_PER_BUS; devfn++) {
- zdev = zbus->function[devfn];
- if (zdev && !zdev->has_hp_slot) {
- rc = zpci_init_slot(zdev);
- if (rc)
- return rc;
- zdev->has_hp_slot = 1;
- }
- }
-
- }
-
- return rc;
-}
-
static int zpci_bus_add_device(struct zpci_bus *zbus, struct zpci_dev *zdev)
{
int rc = -EINVAL;
@@ -352,21 +308,19 @@ static int zpci_bus_add_device(struct zpci_bus *zbus, struct zpci_dev *zdev)
pr_err("devfn %04x is already assigned\n", zdev->devfn);
return rc;
}
+
zdev->zbus = zbus;
zbus->function[zdev->devfn] = zdev;
zpci_nb_devices++;
- if (zbus->bus) {
- if (zbus->multifunction && !zdev->rid_available) {
- WARN_ONCE(1, "rid_available not set for multifunction\n");
- goto error;
- }
-
- zpci_bus_create_hotplug_slots(zdev);
- } else {
- /* Hotplug slot will be created once function 0 appears */
- zbus->multifunction = 1;
+ if (zbus->multifunction && !zdev->rid_available) {
+ WARN_ONCE(1, "rid_available not set for multifunction\n");
+ goto error;
}
+ rc = zpci_init_slot(zdev);
+ if (rc)
+ goto error;
+ zdev->has_hp_slot = 1;
return 0;
@@ -400,7 +354,11 @@ int zpci_bus_device_register(struct zpci_dev *zdev, struct pci_ops *ops)
return -ENOMEM;
}
- if (zdev->devfn == 0) {
+ if (!zbus->bus) {
+ /* The UID of the first PCI function registered with a zpci_bus
+ * is used as the domain number for that bus. Currently there
+ * is exactly one zpci_bus per domain.
+ */
rc = zpci_bus_create_pci_bus(zbus, zdev, ops);
if (rc)
goto error;
diff --git a/arch/sh/include/asm/dma.h b/arch/sh/include/asm/dma.h
index 17d23ae98c77..c8bee3f985a2 100644
--- a/arch/sh/include/asm/dma.h
+++ b/arch/sh/include/asm/dma.h
@@ -137,10 +137,4 @@ extern int register_chan_caps(const char *dmac, struct dma_chan_caps *capslist);
extern int dma_create_sysfs_files(struct dma_channel *, struct dma_info *);
extern void dma_remove_sysfs_files(struct dma_channel *, struct dma_info *);
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* __ASM_SH_DMA_H */
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index ad22e88c6657..54c30126ea17 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -88,10 +88,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
return hose->need_domain_info;
}
-/* Chances are this interrupt is wired PC-style ... */
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- return channel ? 15 : 14;
-}
-
#endif /* __ASM_SH_PCI_H */
diff --git a/arch/sparc/include/asm/dma.h b/arch/sparc/include/asm/dma.h
index 462e7c794a09..08043f35b110 100644
--- a/arch/sparc/include/asm/dma.h
+++ b/arch/sparc/include/asm/dma.h
@@ -82,14 +82,6 @@
#define DMA_BURST64 0x40
#define DMA_BURSTBITS 0x7f
-/* From PCI */
-
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#ifdef CONFIG_SPARC32
struct device;
diff --git a/arch/sparc/include/asm/pci.h b/arch/sparc/include/asm/pci.h
index 4deddf430e5d..1419aa84df71 100644
--- a/arch/sparc/include/asm/pci.h
+++ b/arch/sparc/include/asm/pci.h
@@ -37,16 +37,8 @@ static inline int pci_proc_domain(struct pci_bus *bus)
#define HAVE_PCI_MMAP
#define arch_can_pci_mmap_io() 1
#define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
+#define ARCH_GENERIC_PCI_MMAP_RESOURCE
#define get_pci_unmapped_area get_fb_unmapped_area
#endif /* CONFIG_SPARC64 */
-#if defined(CONFIG_SPARC64) || defined(CONFIG_LEON_PCI)
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- return PCI_IRQ_NONE;
-}
-#else
-#include <asm-generic/pci.h>
-#endif
-
#endif /* ___ASM_SPARC_PCI_H */
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 31b0c1983286..cb1ef25116e9 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -751,156 +751,15 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
}
/* Platform support for /proc/bus/pci/X/Y mmap()s. */
-
-/* If the user uses a host-bridge as the PCI device, he may use
- * this to perform a raw mmap() of the I/O or MEM space behind
- * that controller.
- *
- * This can be useful for execution of x86 PCI bios initialization code
- * on a PCI card, like the xfree86 int10 stuff does.
- */
-static int __pci_mmap_make_offset_bus(struct pci_dev *pdev, struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state)
+int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
{
struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
- unsigned long space_size, user_offset, user_size;
-
- if (mmap_state == pci_mmap_io) {
- space_size = resource_size(&pbm->io_space);
- } else {
- space_size = resource_size(&pbm->mem_space);
- }
-
- /* Make sure the request is in range. */
- user_offset = vma->vm_pgoff << PAGE_SHIFT;
- user_size = vma->vm_end - vma->vm_start;
-
- if (user_offset >= space_size ||
- (user_offset + user_size) > space_size)
- return -EINVAL;
-
- if (mmap_state == pci_mmap_io) {
- vma->vm_pgoff = (pbm->io_space.start +
- user_offset) >> PAGE_SHIFT;
- } else {
- vma->vm_pgoff = (pbm->mem_space.start +
- user_offset) >> PAGE_SHIFT;
- }
-
- return 0;
-}
-
-/* Adjust vm_pgoff of VMA such that it is the physical page offset
- * corresponding to the 32-bit pci bus offset for DEV requested by the user.
- *
- * Basically, the user finds the base address for his device which he wishes
- * to mmap. They read the 32-bit value from the config space base register,
- * add whatever PAGE_SIZE multiple offset they wish, and feed this into the
- * offset parameter of mmap on /proc/bus/pci/XXX for that device.
- *
- * Returns negative error code on failure, zero on success.
- */
-static int __pci_mmap_make_offset(struct pci_dev *pdev,
- struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state)
-{
- unsigned long user_paddr, user_size;
- int i, err;
-
- /* First compute the physical address in vma->vm_pgoff,
- * making sure the user offset is within range in the
- * appropriate PCI space.
- */
- err = __pci_mmap_make_offset_bus(pdev, vma, mmap_state);
- if (err)
- return err;
-
- /* If this is a mapping on a host bridge, any address
- * is OK.
- */
- if ((pdev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
- return err;
-
- /* Otherwise make sure it's in the range for one of the
- * device's resources.
- */
- user_paddr = vma->vm_pgoff << PAGE_SHIFT;
- user_size = vma->vm_end - vma->vm_start;
+ resource_size_t ioaddr = pci_resource_start(pdev, bar);
- for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
- struct resource *rp = &pdev->resource[i];
- resource_size_t aligned_end;
-
- /* Active? */
- if (!rp->flags)
- continue;
-
- /* Same type? */
- if (i == PCI_ROM_RESOURCE) {
- if (mmap_state != pci_mmap_mem)
- continue;
- } else {
- if ((mmap_state == pci_mmap_io &&
- (rp->flags & IORESOURCE_IO) == 0) ||
- (mmap_state == pci_mmap_mem &&
- (rp->flags & IORESOURCE_MEM) == 0))
- continue;
- }
-
- /* Align the resource end to the next page address.
- * PAGE_SIZE intentionally added instead of (PAGE_SIZE - 1),
- * because actually we need the address of the next byte
- * after rp->end.
- */
- aligned_end = (rp->end + PAGE_SIZE) & PAGE_MASK;
-
- if ((rp->start <= user_paddr) &&
- (user_paddr + user_size) <= aligned_end)
- break;
- }
-
- if (i > PCI_ROM_RESOURCE)
+ if (!pbm)
return -EINVAL;
- return 0;
-}
-
-/* Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
- * device mapping.
- */
-static void __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state)
-{
- /* Our io_remap_pfn_range takes care of this, do nothing. */
-}
-
-/* Perform the actual remap of the pages for a PCI device mapping, as appropriate
- * for this architecture. The region in the process to map is described by vm_start
- * and vm_end members of VMA, the base physical address is found in vm_pgoff.
- * The pci device structure is provided so that architectures may make mapping
- * decisions on a per-device or per-bus basis.
- *
- * Returns a negative error code on failure, zero on success.
- */
-int pci_mmap_page_range(struct pci_dev *dev, int bar,
- struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state, int write_combine)
-{
- int ret;
-
- ret = __pci_mmap_make_offset(dev, vma, mmap_state);
- if (ret < 0)
- return ret;
-
- __pci_mmap_set_pgprot(dev, vma, mmap_state);
-
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
- ret = io_remap_pfn_range(vma, vma->vm_start,
- vma->vm_pgoff,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
- if (ret)
- return ret;
+ vma->vm_pgoff += (ioaddr + pbm->io_space.start) >> PAGE_SHIFT;
return 0;
}
diff --git a/arch/um/include/asm/pci.h b/arch/um/include/asm/pci.h
index da13fd5519ef..34fe4921b5fa 100644
--- a/arch/um/include/asm/pci.h
+++ b/arch/um/include/asm/pci.h
@@ -4,28 +4,8 @@
#include <linux/types.h>
#include <asm/io.h>
-#define PCIBIOS_MIN_IO 0
-#define PCIBIOS_MIN_MEM 0
-
-#define pcibios_assign_all_busses() 1
-
-extern int isa_dma_bridge_buggy;
-
-#ifdef CONFIG_PCI
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- /* no legacy IRQs */
- return -ENODEV;
-}
-#endif
-
-#ifdef CONFIG_PCI_DOMAINS
-static inline int pci_proc_domain(struct pci_bus *bus)
-{
- /* always show the domain in /proc */
- return 1;
-}
-#endif /* CONFIG_PCI */
+/* Generic PCI */
+#include <asm-generic/pci.h>
#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
/*
diff --git a/arch/x86/include/asm/dma.h b/arch/x86/include/asm/dma.h
index 8e95aa4b0d17..8ae6e0e11b8b 100644
--- a/arch/x86/include/asm/dma.h
+++ b/arch/x86/include/asm/dma.h
@@ -307,12 +307,4 @@ extern int request_dma(unsigned int dmanr, const char *device_id);
extern void free_dma(unsigned int dmanr);
#endif
-/* From PCI */
-
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
#endif /* _ASM_X86_DMA_H */
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index f3fd5928bcbb..736793d65bcb 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -105,9 +105,6 @@ static inline void early_quirks(void) { }
extern void pci_iommu_alloc(void);
-/* generic pci stuff */
-#include <asm-generic/pci.h>
-
#ifdef CONFIG_NUMA
/* Returns the node based on pci bus */
static inline int __pcibus_to_node(const struct pci_bus *bus)
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/kernel/cpu/cyrix.c
index 7227c15299d0..9651275aecd1 100644
--- a/arch/x86/kernel/cpu/cyrix.c
+++ b/arch/x86/kernel/cpu/cyrix.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/bitops.h>
#include <linux/delay.h>
+#include <linux/isa-dma.h>
#include <linux/pci.h>
#include <asm/dma.h>
#include <linux/io.h>
diff --git a/arch/xtensa/include/asm/dma.h b/arch/xtensa/include/asm/dma.h
index bb099a373b5a..172644539032 100644
--- a/arch/xtensa/include/asm/dma.h
+++ b/arch/xtensa/include/asm/dma.h
@@ -52,11 +52,4 @@
extern int request_dma(unsigned int dmanr, const char * device_id);
extern void free_dma(unsigned int dmanr);
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
-
#endif
diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
index 8e2b48a268db..b56de9635b6c 100644
--- a/arch/xtensa/include/asm/pci.h
+++ b/arch/xtensa/include/asm/pci.h
@@ -43,7 +43,4 @@
#define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
#define arch_can_pci_mmap_io() 1
-/* Generic PCI */
-#include <asm-generic/pci.h>
-
#endif /* _XTENSA_PCI_H */