[PATCH v4 1/3] PCI: Remove pci_get_legacy_ide_irq and asm-generic/pci.h

[PATCH v4 1/3] 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>
Co-developed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stafford Horne <shorne@gmail.com>
---

Since v3:
 - Further remove the definictions of pci_get_legacy_ide_irq from x86 and use
   the libata macros.
 - Add Acked-bys.

 arch/alpha/include/asm/pci.h   |  6 ------
 arch/arm/include/asm/pci.h     |  5 -----
 arch/arm64/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/s390/include/asm/pci.h    |  1 -
 arch/sh/include/asm/pci.h      |  6 ------
 arch/sparc/include/asm/pci.h   |  9 ---------
 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 -----------------
 15 files changed, 3 insertions(+), 78 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/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/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/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 v4 3/3] asm-generic: Add new pci.h and use it

[Stafford Horne]

The asm/pci.h used for many newer architectures share similar
definitions.  Move the common parts to asm-generic/pci.h to allow for
sharing code.

One thing to note:

 - ARCH_GENERIC_PCI_MMAP_RESOURCE, csky does not define this so we
   undefine it after including asm-generic/pci.h.  Why doesn't csky
   define it?

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/lkml/CAK8P3a0JmPeczfmMBE__vn=Jbvf=nkbpVaZCycyv40pZNCJJXQ@mail.gmail.com/
Acked-by: Pierre Morel <pmorel@linux.ibm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Stafford Horne <shorne@gmail.com>
---
Since v3:
 - Remove notes about pci_get_legacy_ide_irq and isa_dma_bridge_buggy.
 - Change ifdef around pci_proc_domain to use CONFIG_PCI_DOMAINS to avoid
   compile failure on User Mode linux.

 arch/arm64/include/asm/pci.h | 12 ++----------
 arch/csky/include/asm/pci.h  | 24 ++++--------------------
 arch/riscv/include/asm/pci.h | 25 +++----------------------
 arch/um/include/asm/pci.h    | 24 ++----------------------
 include/asm-generic/pci.h    | 32 ++++++++++++++++++++++++++++++++
 5 files changed, 43 insertions(+), 74 deletions(-)
 create mode 100644 include/asm-generic/pci.h

diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h
index 0aebc3488c32..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
@@ -18,15 +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_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..44866c1ad461 100644
--- a/arch/csky/include/asm/pci.h
+++ b/arch/csky/include/asm/pci.h
@@ -9,26 +9,10 @@
 
 #include <asm/io.h>
 
-#define PCIBIOS_MIN_IO		0
-#define PCIBIOS_MIN_MEM		0
+/* Generic PCI */
+#include <asm-generic/pci.h>
 
-/* 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 */
+/* csky doesn't use generic pci resource mapping */
+#undef ARCH_GENERIC_PCI_MMAP_RESOURCE
 
 #endif  /* __ASM_CSKY_PCI_H */
diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
index 7fd52a30e605..12ce8150cfb0 100644
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
@@ -12,29 +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
 
 static inline int pcibus_to_node(struct pci_bus *bus)
@@ -50,4 +28,7 @@ static inline int pcibus_to_node(struct pci_bus *bus)
 
 #endif  /* CONFIG_PCI */
 
+/* Generic PCI */
+#include <asm-generic/pci.h>
+
 #endif  /* _ASM_RISCV_PCI_H */
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/include/asm-generic/pci.h b/include/asm-generic/pci.h
new file mode 100644
index 000000000000..3ceb0cb12321
--- /dev/null
+++ b/include/asm-generic/pci.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __ASM_GENERIC_PCI_H
+#define __ASM_GENERIC_PCI_H
+
+#include <linux/types.h>
+
+#ifndef PCIBIOS_MIN_IO
+#define PCIBIOS_MIN_IO		0
+#endif
+
+#ifndef PCIBIOS_MIN_MEM
+#define PCIBIOS_MIN_MEM		0
+#endif
+
+#ifndef pcibios_assign_all_busses
+/* For bootloaders that do not initialize the PCI bus */
+#define pcibios_assign_all_busses() 1
+#endif
+
+/* Enable generic resource mapping code in drivers/pci/ */
+#define ARCH_GENERIC_PCI_MMAP_RESOURCE
+
+#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_DOMAINS */
+
+#endif /* __ASM_GENERIC_PCI_H */
-- 
2.36.1

Re: [PATCH v4 3/3] asm-generic: Add new pci.h and use it

[Arnd Bergmann]

On Wed, Jul 20, 2022 at 3:19 PM Stafford Horne <shorne@gmail.com> wrote:
>
> The asm/pci.h used for many newer architectures share similar
> definitions.  Move the common parts to asm-generic/pci.h to allow for
> sharing code.
>
> One thing to note:
>
>  - ARCH_GENERIC_PCI_MMAP_RESOURCE, csky does not define this so we
>    undefine it after including asm-generic/pci.h.  Why doesn't csky
>    define it?

If you want to resolve this, I think the easiest way is to add a patch
that sets this
in csky, I'm quite sure this was just a mistake on their end.

> Suggested-by: Arnd Bergmann <arnd@arndb.de>
> Link: https://lore.kernel.org/lkml/CAK8P3a0JmPeczfmMBE__vn=Jbvf=nkbpVaZCycyv40pZNCJJXQ@mail.gmail.com/
> Acked-by: Pierre Morel <pmorel@linux.ibm.com>
> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Stafford Horne <shorne@gmail.com>

Either way:

Reviewed-by: Arnd Bergmann <arnd@arndb.de>

Re: [PATCH v4 1/3] PCI: Remove pci_get_legacy_ide_irq and asm-generic/pci.h

[Christoph Hellwig]

Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>

Re: [PATCH v4 3/3] asm-generic: Add new pci.h and use it

[Christoph Hellwig]

Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>

Re: [PATCH v4 3/3] asm-generic: Add new pci.h and use it

[Bjorn Helgaas]

On Wed, Jul 20, 2022 at 10:19:34PM +0900, Stafford Horne wrote:
> The asm/pci.h used for many newer architectures share similar
> definitions.  Move the common parts to asm-generic/pci.h to allow for
> sharing code.
> 
> One thing to note:
> 
>  - ARCH_GENERIC_PCI_MMAP_RESOURCE, csky does not define this so we
>    undefine it after including asm-generic/pci.h.  Why doesn't csky
>    define it?
> 
> Suggested-by: Arnd Bergmann <arnd@arndb.de>
> Link: https://lore.kernel.org/lkml/CAK8P3a0JmPeczfmMBE__vn=Jbvf=nkbpVaZCycyv40pZNCJJXQ@mail.gmail.com/
> Acked-by: Pierre Morel <pmorel@linux.ibm.com>
> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Stafford Horne <shorne@gmail.com>

> diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h
> index 0aebc3488c32..016eb6b46dc0 100644
> --- a/arch/arm64/include/asm/pci.h
> +++ b/arch/arm64/include/asm/pci.h

> -extern int isa_dma_bridge_buggy;

Shouldn't this go in the previous patch?  The only definition of a
isa_dma_bridge_buggy variable is in drivers/pci/pci.c, and it's under
#ifdef CONFIG_X86_32.

Same for csky, riscv, um?

Re: [PATCH v4 1/3] PCI: Remove pci_get_legacy_ide_irq and asm-generic/pci.h

[Rafael J. Wysocki]

On Wed, Jul 20, 2022 at 3:20 PM Stafford Horne <shorne@gmail.com> 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>
> Co-developed-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Stafford Horne <shorne@gmail.com>

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

> ---
>
> Since v3:
>  - Further remove the definictions of pci_get_legacy_ide_irq from x86 and use
>    the libata macros.
>  - Add Acked-bys.
>
>  arch/alpha/include/asm/pci.h   |  6 ------
>  arch/arm/include/asm/pci.h     |  5 -----
>  arch/arm64/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/s390/include/asm/pci.h    |  1 -
>  arch/sh/include/asm/pci.h      |  6 ------
>  arch/sparc/include/asm/pci.h   |  9 ---------
>  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 -----------------
>  15 files changed, 3 insertions(+), 78 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/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/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/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
>