[PATCH v6 1/4] PCI: Remove pci_get_legacy_ide_irq and asm-generic/pci.h

[PATCH v6 1/4] PCI: Remove pci_get_legacy_ide_irq and asm-generic/pci.h

[Stafford Horne]

The definition of the pci header function pci_get_legacy_ide_irq is only
used in platforms that support PNP.  So many of the architecutres where
it is defined do not use it.  This also means we can remove
asm-generic/pci.h as all it provides is a definition of
pci_get_legacy_ide_irq.

Where referenced, replace the usage of pci_get_legacy_ide_irq with the
libata.h macros ATA_PRIMARY_IRQ and ATA_SECONDARY_IRQ which provide the
same functionality.  This allows removing pci_get_legacy_ide_irq from
headers where it is no longer used.

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Pierre Morel <pmorel@linux.ibm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Co-developed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stafford Horne <shorne@gmail.com>
---
 arch/alpha/include/asm/pci.h   |  6 ------
 arch/arm/include/asm/pci.h     |  5 -----
 arch/arm64/include/asm/pci.h   |  6 ------
 arch/csky/include/asm/pci.h    |  6 ------
 arch/ia64/include/asm/pci.h    |  6 ------
 arch/m68k/include/asm/pci.h    |  2 --
 arch/mips/include/asm/pci.h    |  6 ------
 arch/parisc/include/asm/pci.h  |  5 -----
 arch/powerpc/include/asm/pci.h |  1 -
 arch/riscv/include/asm/pci.h   |  6 ------
 arch/s390/include/asm/pci.h    |  1 -
 arch/sh/include/asm/pci.h      |  6 ------
 arch/sparc/include/asm/pci.h   |  9 ---------
 arch/um/include/asm/pci.h      |  8 --------
 arch/x86/include/asm/pci.h     |  3 ---
 arch/xtensa/include/asm/pci.h  |  3 ---
 drivers/pnp/resource.c         |  5 +++--
 include/asm-generic/pci.h      | 17 -----------------
 18 files changed, 3 insertions(+), 98 deletions(-)
 delete mode 100644 include/asm-generic/pci.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/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..0aebc3488c32 100644
--- a/arch/arm64/include/asm/pci.h
+++ b/arch/arm64/include/asm/pci.h
@@ -23,12 +23,6 @@
 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;
diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
index ebc765b1f78b..0535f1aaae38 100644
--- a/arch/csky/include/asm/pci.h
+++ b/arch/csky/include/asm/pci.h
@@ -18,12 +18,6 @@
 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 */
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/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/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/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/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..a7b8f0d0df7f 100644
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
@@ -23,12 +23,6 @@
 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 */
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index fdb9745ee998..5889ddcbc374 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/sclp.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/pci.h b/arch/sparc/include/asm/pci.h
index 4deddf430e5d..0c58f65bd172 100644
--- a/arch/sparc/include/asm/pci.h
+++ b/arch/sparc/include/asm/pci.h
@@ -40,13 +40,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 #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/um/include/asm/pci.h b/arch/um/include/asm/pci.h
index da13fd5519ef..26b96c02ef61 100644
--- a/arch/um/include/asm/pci.h
+++ b/arch/um/include/asm/pci.h
@@ -11,14 +11,6 @@
 
 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)
 {
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/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 */
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index 2fa0f7d55259..8f7695624c8c 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -17,6 +17,7 @@
 #include <asm/dma.h>
 #include <asm/irq.h>
 #include <linux/pci.h>
+#include <linux/libata.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
 
@@ -322,8 +323,8 @@ static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
 		 * treat the compatibility IRQs as busy.
 		 */
 		if ((progif & 0x5) != 0x5)
-			if (pci_get_legacy_ide_irq(pci, 0) == irq ||
-			    pci_get_legacy_ide_irq(pci, 1) == irq) {
+			if (ATA_PRIMARY_IRQ(pci) == irq ||
+			    ATA_SECONDARY_IRQ(pci) == irq) {
 				pnp_dbg(&pnp->dev, "  legacy IDE device %s "
 					"using irq %d\n", pci_name(pci), irq);
 				return 1;
diff --git a/include/asm-generic/pci.h b/include/asm-generic/pci.h
deleted file mode 100644
index 6bb3cd3d695a..000000000000
--- a/include/asm-generic/pci.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * linux/include/asm-generic/pci.h
- *
- *  Copyright (C) 2003 Russell King
- */
-#ifndef _ASM_GENERIC_PCI_H
-#define _ASM_GENERIC_PCI_H
-
-#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
-	return channel ? 15 : 14;
-}
-#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
-
-#endif /* _ASM_GENERIC_PCI_H */
-- 
2.36.1

[PATCH v6 2/4] PCI: Move isa_dma_bridge_buggy out of dma.h

[Stafford Horne]

During recent PCI cleanups we noticed that the isa_dma_bridge_buggy
symbol supported by all architectures is actually only used for x86_32.

This patch moves the symbol out of all architectures limiting usage to
only x86_32.  This is possible because only x86_32 platforms or quirks
existing in PCI devices supported on x86_32 ever set this.  A new global
header linux/isa-dma.h is added to provide a common place to maintain
the definition.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Stafford Horne <shorne@gmail.com>
---
 arch/alpha/include/asm/dma.h           |  9 ---------
 arch/arc/include/asm/dma.h             |  5 -----
 arch/arm/include/asm/dma.h             |  6 ------
 arch/arm64/include/asm/pci.h           |  2 --
 arch/csky/include/asm/pci.h            |  2 --
 arch/ia64/include/asm/dma.h            |  2 --
 arch/m68k/include/asm/dma.h            |  6 ------
 arch/microblaze/include/asm/dma.h      |  6 ------
 arch/mips/include/asm/dma.h            |  8 --------
 arch/parisc/include/asm/dma.h          |  6 ------
 arch/powerpc/include/asm/dma.h         |  6 ------
 arch/riscv/include/asm/pci.h           |  2 --
 arch/s390/include/asm/dma.h            |  6 ------
 arch/sh/include/asm/dma.h              |  6 ------
 arch/sparc/include/asm/dma.h           |  8 --------
 arch/um/include/asm/pci.h              |  2 --
 arch/x86/include/asm/dma.h             |  8 --------
 arch/xtensa/include/asm/dma.h          |  7 -------
 drivers/comedi/drivers/comedi_isadma.c |  2 +-
 drivers/pci/pci.c                      |  2 ++
 drivers/pci/quirks.c                   |  4 +++-
 include/linux/isa-dma.h                | 14 ++++++++++++++
 sound/core/isadma.c                    |  2 +-
 23 files changed, 21 insertions(+), 100 deletions(-)
 create mode 100644 include/linux/isa-dma.h

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/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 a81dda65c576..907d139be431 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/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h
index 0aebc3488c32..682c922b5658 100644
--- a/arch/arm64/include/asm/pci.h
+++ b/arch/arm64/include/asm/pci.h
@@ -20,8 +20,6 @@
 #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_proc_domain(struct pci_bus *bus)
 {
diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
index 0535f1aaae38..5c02454ec724 100644
--- a/arch/csky/include/asm/pci.h
+++ b/arch/csky/include/asm/pci.h
@@ -15,8 +15,6 @@
 /* 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_proc_domain(struct pci_bus *bus)
 {
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/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/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/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/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/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
index a7b8f0d0df7f..f904df586c03 100644
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
@@ -20,8 +20,6 @@
 
 #define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
 
-extern int isa_dma_bridge_buggy;
-
 #ifdef CONFIG_PCI
 static inline int pci_proc_domain(struct pci_bus *bus)
 {
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/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/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/um/include/asm/pci.h b/arch/um/include/asm/pci.h
index 26b96c02ef61..1211855aff34 100644
--- a/arch/um/include/asm/pci.h
+++ b/arch/um/include/asm/pci.h
@@ -9,8 +9,6 @@
 
 #define pcibios_assign_all_busses() 1
 
-extern int isa_dma_bridge_buggy;
-
 #ifdef CONFIG_PCI_DOMAINS
 static inline int pci_proc_domain(struct pci_bus *bus)
 {
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/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/drivers/comedi/drivers/comedi_isadma.c b/drivers/comedi/drivers/comedi_isadma.c
index 700982464c53..020b3d1e1ac0 100644
--- a/drivers/comedi/drivers/comedi_isadma.c
+++ b/drivers/comedi/drivers/comedi_isadma.c
@@ -8,7 +8,7 @@
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
-#include <asm/dma.h>
+#include <linux/isa-dma.h>
 #include <linux/comedi/comedidev.h>
 #include <linux/comedi/comedi_isadma.h>
 
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index cfaf40a540a8..60c55d2cb2cc 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -41,8 +41,10 @@ const char *pci_power_names[] = {
 };
 EXPORT_SYMBOL_GPL(pci_power_names);
 
+#ifdef CONFIG_X86_32
 int isa_dma_bridge_buggy;
 EXPORT_SYMBOL(isa_dma_bridge_buggy);
+#endif
 
 int pci_pci_problems;
 EXPORT_SYMBOL(pci_pci_problems);
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 41aeaa235132..6fc64509eee7 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -17,6 +17,7 @@
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/pci.h>
+#include <linux/isa-dma.h> /* isa_dma_bridge_buggy */
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/acpi.h>
@@ -30,7 +31,6 @@
 #include <linux/pm_runtime.h>
 #include <linux/suspend.h>
 #include <linux/switchtec.h>
-#include <asm/dma.h>	/* isa_dma_bridge_buggy */
 #include "pci.h"
 
 static ktime_t fixup_debug_start(struct pci_dev *dev,
@@ -239,6 +239,7 @@ static void quirk_passive_release(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_passive_release);
 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82441,	quirk_passive_release);
 
+#ifdef CONFIG_X86_32
 /*
  * The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a
  * workaround but VIA don't answer queries. If you happen to have good
@@ -265,6 +266,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL,	PCI_DEVICE_ID_AL_M1533,		quirk_isa_dma
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_1,	quirk_isa_dma_hangs);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_2,	quirk_isa_dma_hangs);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC,	PCI_DEVICE_ID_NEC_CBUS_3,	quirk_isa_dma_hangs);
+#endif
 
 /*
  * Intel NM10 "TigerPoint" LPC PM1a_STS.BM_STS must be clear
diff --git a/include/linux/isa-dma.h b/include/linux/isa-dma.h
new file mode 100644
index 000000000000..61504a8c1b9e
--- /dev/null
+++ b/include/linux/isa-dma.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __LINUX_ISA_DMA_H
+#define __LINUX_ISA_DMA_H
+
+#include <asm/dma.h>
+
+#if defined(CONFIG_PCI) && defined(CONFIG_X86_32)
+extern int isa_dma_bridge_buggy;
+#else
+#define isa_dma_bridge_buggy	(0)
+#endif
+
+#endif /* __LINUX_ISA_DMA_H */
diff --git a/sound/core/isadma.c b/sound/core/isadma.c
index 1f45ede023b4..18a86212e3a8 100644
--- a/sound/core/isadma.c
+++ b/sound/core/isadma.c
@@ -12,8 +12,8 @@
 #undef HAVE_REALLY_SLOW_DMA_CONTROLLER
 
 #include <linux/export.h>
+#include <linux/isa-dma.h>
 #include <sound/core.h>
-#include <asm/dma.h>
 
 /**
  * snd_dma_program - program an ISA DMA transfer
-- 
2.36.1

Re: [PATCH v6 1/4] PCI: Remove pci_get_legacy_ide_irq and asm-generic/pci.h

[Bjorn Helgaas]

On Sat, Jul 23, 2022 at 06:49:41AM +0900, Stafford Horne wrote:
> The definition of the pci header function pci_get_legacy_ide_irq is only
> used in platforms that support PNP.  So many of the architecutres where
> it is defined do not use it.  This also means we can remove
> asm-generic/pci.h as all it provides is a definition of
> pci_get_legacy_ide_irq.
> 
> Where referenced, replace the usage of pci_get_legacy_ide_irq with the
> libata.h macros ATA_PRIMARY_IRQ and ATA_SECONDARY_IRQ which provide the
> same functionality.  This allows removing pci_get_legacy_ide_irq from
> headers where it is no longer used.
> 
> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Acked-by: Pierre Morel <pmorel@linux.ibm.com>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Co-developed-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Stafford Horne <shorne@gmail.com>

I applied all 4 patches in this series to pci/header-cleanup-immutable
for v5.20.

https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=pci/header-cleanup-immutable

> ---
>  arch/alpha/include/asm/pci.h   |  6 ------
>  arch/arm/include/asm/pci.h     |  5 -----
>  arch/arm64/include/asm/pci.h   |  6 ------
>  arch/csky/include/asm/pci.h    |  6 ------
>  arch/ia64/include/asm/pci.h    |  6 ------
>  arch/m68k/include/asm/pci.h    |  2 --
>  arch/mips/include/asm/pci.h    |  6 ------
>  arch/parisc/include/asm/pci.h  |  5 -----
>  arch/powerpc/include/asm/pci.h |  1 -
>  arch/riscv/include/asm/pci.h   |  6 ------
>  arch/s390/include/asm/pci.h    |  1 -
>  arch/sh/include/asm/pci.h      |  6 ------
>  arch/sparc/include/asm/pci.h   |  9 ---------
>  arch/um/include/asm/pci.h      |  8 --------
>  arch/x86/include/asm/pci.h     |  3 ---
>  arch/xtensa/include/asm/pci.h  |  3 ---
>  drivers/pnp/resource.c         |  5 +++--
>  include/asm-generic/pci.h      | 17 -----------------
>  18 files changed, 3 insertions(+), 98 deletions(-)
>  delete mode 100644 include/asm-generic/pci.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/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..0aebc3488c32 100644
> --- a/arch/arm64/include/asm/pci.h
> +++ b/arch/arm64/include/asm/pci.h
> @@ -23,12 +23,6 @@
>  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;
> diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
> index ebc765b1f78b..0535f1aaae38 100644
> --- a/arch/csky/include/asm/pci.h
> +++ b/arch/csky/include/asm/pci.h
> @@ -18,12 +18,6 @@
>  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 */
> 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/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/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/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/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..a7b8f0d0df7f 100644
> --- a/arch/riscv/include/asm/pci.h
> +++ b/arch/riscv/include/asm/pci.h
> @@ -23,12 +23,6 @@
>  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 */
> diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
> index fdb9745ee998..5889ddcbc374 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/sclp.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/pci.h b/arch/sparc/include/asm/pci.h
> index 4deddf430e5d..0c58f65bd172 100644
> --- a/arch/sparc/include/asm/pci.h
> +++ b/arch/sparc/include/asm/pci.h
> @@ -40,13 +40,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
>  #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/um/include/asm/pci.h b/arch/um/include/asm/pci.h
> index da13fd5519ef..26b96c02ef61 100644
> --- a/arch/um/include/asm/pci.h
> +++ b/arch/um/include/asm/pci.h
> @@ -11,14 +11,6 @@
>  
>  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)
>  {
> 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/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 */
> diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
> index 2fa0f7d55259..8f7695624c8c 100644
> --- a/drivers/pnp/resource.c
> +++ b/drivers/pnp/resource.c
> @@ -17,6 +17,7 @@
>  #include <asm/dma.h>
>  #include <asm/irq.h>
>  #include <linux/pci.h>
> +#include <linux/libata.h>
>  #include <linux/ioport.h>
>  #include <linux/init.h>
>  
> @@ -322,8 +323,8 @@ static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
>  		 * treat the compatibility IRQs as busy.
>  		 */
>  		if ((progif & 0x5) != 0x5)
> -			if (pci_get_legacy_ide_irq(pci, 0) == irq ||
> -			    pci_get_legacy_ide_irq(pci, 1) == irq) {
> +			if (ATA_PRIMARY_IRQ(pci) == irq ||
> +			    ATA_SECONDARY_IRQ(pci) == irq) {
>  				pnp_dbg(&pnp->dev, "  legacy IDE device %s "
>  					"using irq %d\n", pci_name(pci), irq);
>  				return 1;
> diff --git a/include/asm-generic/pci.h b/include/asm-generic/pci.h
> deleted file mode 100644
> index 6bb3cd3d695a..000000000000
> --- a/include/asm-generic/pci.h
> +++ /dev/null
> @@ -1,17 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -/*
> - * linux/include/asm-generic/pci.h
> - *
> - *  Copyright (C) 2003 Russell King
> - */
> -#ifndef _ASM_GENERIC_PCI_H
> -#define _ASM_GENERIC_PCI_H
> -
> -#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
> -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> -{
> -	return channel ? 15 : 14;
> -}
> -#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
> -
> -#endif /* _ASM_GENERIC_PCI_H */
> -- 
> 2.36.1
> 
> 
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v6 1/4] PCI: Remove pci_get_legacy_ide_irq and asm-generic/pci.h

[Stafford Horne]

On Fri, Jul 22, 2022 at 06:38:21PM -0500, Bjorn Helgaas wrote:
> On Sat, Jul 23, 2022 at 06:49:41AM +0900, Stafford Horne wrote:
> > The definition of the pci header function pci_get_legacy_ide_irq is only
> > used in platforms that support PNP.  So many of the architecutres where
> > it is defined do not use it.  This also means we can remove
> > asm-generic/pci.h as all it provides is a definition of
> > pci_get_legacy_ide_irq.
> > 
> > Where referenced, replace the usage of pci_get_legacy_ide_irq with the
> > libata.h macros ATA_PRIMARY_IRQ and ATA_SECONDARY_IRQ which provide the
> > same functionality.  This allows removing pci_get_legacy_ide_irq from
> > headers where it is no longer used.
> > 
> > Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
> > Acked-by: Pierre Morel <pmorel@linux.ibm.com>
> > Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> > Reviewed-by: Christoph Hellwig <hch@lst.de>
> > Co-developed-by: Arnd Bergmann <arnd@arndb.de>
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > Signed-off-by: Stafford Horne <shorne@gmail.com>
> 
> I applied all 4 patches in this series to pci/header-cleanup-immutable
> for v5.20.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=pci/header-cleanup-immutable

Thank you,

Sorry, the 0/4 cover letter is here.

  https://lore.kernel.org/lkml/20220722214944.831438-1-shorne@gmail.com/

I hadn't had you CC'd as I was using ./script/get_maintainer.pl to maintain the
CCs.  Maybe patch MAINTAINERS like the following could help keep you CC'd on all
things PCI?  But maybe that would be too much, never-the-less I'll make sure you
are CC'd on pci related patches including cover-letters in the future.

    diff --git a/MAINTAINERS b/MAINTAINERS
    index f313862b2929..b64cd6bbb34f 100644
    --- a/MAINTAINERS
    +++ b/MAINTAINERS
    @@ -15552,6 +15552,8 @@ F:      include/linux/of_pci.h
     F:     include/linux/pci*
     F:     include/uapi/linux/pci*
     F:     lib/pci*
    +K:     pci
    +N:     pci

Palmer, we now have a branch you can use for your RISC-V for-next.  Does, that
work?

-Stafford

> > ---
> >  arch/alpha/include/asm/pci.h   |  6 ------
> >  arch/arm/include/asm/pci.h     |  5 -----
> >  arch/arm64/include/asm/pci.h   |  6 ------
> >  arch/csky/include/asm/pci.h    |  6 ------
> >  arch/ia64/include/asm/pci.h    |  6 ------
> >  arch/m68k/include/asm/pci.h    |  2 --
> >  arch/mips/include/asm/pci.h    |  6 ------
> >  arch/parisc/include/asm/pci.h  |  5 -----
> >  arch/powerpc/include/asm/pci.h |  1 -
> >  arch/riscv/include/asm/pci.h   |  6 ------
> >  arch/s390/include/asm/pci.h    |  1 -
> >  arch/sh/include/asm/pci.h      |  6 ------
> >  arch/sparc/include/asm/pci.h   |  9 ---------
> >  arch/um/include/asm/pci.h      |  8 --------
> >  arch/x86/include/asm/pci.h     |  3 ---
> >  arch/xtensa/include/asm/pci.h  |  3 ---
> >  drivers/pnp/resource.c         |  5 +++--
> >  include/asm-generic/pci.h      | 17 -----------------
> >  18 files changed, 3 insertions(+), 98 deletions(-)
> >  delete mode 100644 include/asm-generic/pci.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/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..0aebc3488c32 100644
> > --- a/arch/arm64/include/asm/pci.h
> > +++ b/arch/arm64/include/asm/pci.h
> > @@ -23,12 +23,6 @@
> >  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;
> > diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
> > index ebc765b1f78b..0535f1aaae38 100644
> > --- a/arch/csky/include/asm/pci.h
> > +++ b/arch/csky/include/asm/pci.h
> > @@ -18,12 +18,6 @@
> >  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 */
> > 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/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/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/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/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..a7b8f0d0df7f 100644
> > --- a/arch/riscv/include/asm/pci.h
> > +++ b/arch/riscv/include/asm/pci.h
> > @@ -23,12 +23,6 @@
> >  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 */
> > diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
> > index fdb9745ee998..5889ddcbc374 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/sclp.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/pci.h b/arch/sparc/include/asm/pci.h
> > index 4deddf430e5d..0c58f65bd172 100644
> > --- a/arch/sparc/include/asm/pci.h
> > +++ b/arch/sparc/include/asm/pci.h
> > @@ -40,13 +40,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
> >  #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/um/include/asm/pci.h b/arch/um/include/asm/pci.h
> > index da13fd5519ef..26b96c02ef61 100644
> > --- a/arch/um/include/asm/pci.h
> > +++ b/arch/um/include/asm/pci.h
> > @@ -11,14 +11,6 @@
> >  
> >  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)
> >  {
> > 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/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 */
> > diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
> > index 2fa0f7d55259..8f7695624c8c 100644
> > --- a/drivers/pnp/resource.c
> > +++ b/drivers/pnp/resource.c
> > @@ -17,6 +17,7 @@
> >  #include <asm/dma.h>
> >  #include <asm/irq.h>
> >  #include <linux/pci.h>
> > +#include <linux/libata.h>
> >  #include <linux/ioport.h>
> >  #include <linux/init.h>
> >  
> > @@ -322,8 +323,8 @@ static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
> >  		 * treat the compatibility IRQs as busy.
> >  		 */
> >  		if ((progif & 0x5) != 0x5)
> > -			if (pci_get_legacy_ide_irq(pci, 0) == irq ||
> > -			    pci_get_legacy_ide_irq(pci, 1) == irq) {
> > +			if (ATA_PRIMARY_IRQ(pci) == irq ||
> > +			    ATA_SECONDARY_IRQ(pci) == irq) {
> >  				pnp_dbg(&pnp->dev, "  legacy IDE device %s "
> >  					"using irq %d\n", pci_name(pci), irq);
> >  				return 1;
> > diff --git a/include/asm-generic/pci.h b/include/asm-generic/pci.h
> > deleted file mode 100644
> > index 6bb3cd3d695a..000000000000
> > --- a/include/asm-generic/pci.h
> > +++ /dev/null
> > @@ -1,17 +0,0 @@
> > -/* SPDX-License-Identifier: GPL-2.0 */
> > -/*
> > - * linux/include/asm-generic/pci.h
> > - *
> > - *  Copyright (C) 2003 Russell King
> > - */
> > -#ifndef _ASM_GENERIC_PCI_H
> > -#define _ASM_GENERIC_PCI_H
> > -
> > -#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > -	return channel ? 15 : 14;
> > -}
> > -#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
> > -
> > -#endif /* _ASM_GENERIC_PCI_H */
> > -- 
> > 2.36.1
> > 
> > 
> > _______________________________________________
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