[PATCH v3 1/2] asm-generic: Remove pci.h copying remaining code to x86

[PATCH v3 1/2] asm-generic: Remove pci.h copying remaining code to x86

[Stafford Horne]

The generic pci.h header now only provides a definition of
pci_get_legacy_ide_irq which is used by architectures that support PNP.
Of the architectures that use asm-generic/pci.h this is only x86.

This patch removes the old pci.h in order to make room for a new
pci.h to be used by arm64, riscv, openrisc, etc.

The existing code in pci.h is moved out to x86.  On other architectures
we clean up any outstanding references.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/lkml/CAK8P3a0JmPeczfmMBE__vn=Jbvf=nkbpVaZCycyv40pZNCJJXQ@mail.gmail.com/
Signed-off-by: Stafford Horne <shorne@gmail.com>
---
Since v2:
 - Remove pci_get_legacy_ide_irq in m68k
Since v1:
 - Remove pci_get_legacy_ide_irq for most architectures as its not needed.

 arch/alpha/include/asm/pci.h   |  1 -
 arch/ia64/include/asm/pci.h    |  1 -
 arch/m68k/include/asm/pci.h    |  2 --
 arch/powerpc/include/asm/pci.h |  1 -
 arch/s390/include/asm/pci.h    |  1 -
 arch/sparc/include/asm/pci.h   |  9 ---------
 arch/x86/include/asm/pci.h     |  6 ++++--
 arch/xtensa/include/asm/pci.h  |  3 ---
 include/asm-generic/pci.h      | 17 -----------------
 9 files changed, 4 insertions(+), 37 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..8ac5af0fc4da 100644
--- a/arch/alpha/include/asm/pci.h
+++ b/arch/alpha/include/asm/pci.h
@@ -56,7 +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;
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index 8c163d1d0189..218412d963c2 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -63,7 +63,6 @@ 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);
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/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/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..7da27f665cfe 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -105,8 +105,10 @@ static inline void early_quirks(void) { }
 
 extern void pci_iommu_alloc(void);
 
-/* generic pci stuff */
-#include <asm-generic/pci.h>
+static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
+{
+	return channel ? 15 : 14;
+}
 
 #ifdef CONFIG_NUMA
 /* Returns the node based on pci 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/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

Re: [PATCH v3 1/2] asm-generic: Remove pci.h copying remaining code to x86

[Geert Uytterhoeven]

On Mon, Jul 18, 2022 at 2:41 AM Stafford Horne <shorne@gmail.com> wrote:
> The generic pci.h header now only provides a definition of
> pci_get_legacy_ide_irq which is used by architectures that support PNP.
> Of the architectures that use asm-generic/pci.h this is only x86.
>
> This patch removes the old pci.h in order to make room for a new
> pci.h to be used by arm64, riscv, openrisc, etc.
>
> The existing code in pci.h is moved out to x86.  On other architectures
> we clean up any outstanding references.
>
> Suggested-by: Arnd Bergmann <arnd@arndb.de>
> Link: https://lore.kernel.org/lkml/CAK8P3a0JmPeczfmMBE__vn=Jbvf=nkbpVaZCycyv40pZNCJJXQ@mail.gmail.com/
> Signed-off-by: Stafford Horne <shorne@gmail.com>
> ---
> Since v2:
>  - Remove pci_get_legacy_ide_irq in m68k
> Since v1:
>  - Remove pci_get_legacy_ide_irq for most architectures as its not needed.

>  arch/m68k/include/asm/pci.h    |  2 --

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 1/2] asm-generic: Remove pci.h copying remaining code to x86

[Pierre Morel]

On 7/18/22 02:41, Stafford Horne wrote:
> The generic pci.h header now only provides a definition of
> pci_get_legacy_ide_irq which is used by architectures that support PNP.
> Of the architectures that use asm-generic/pci.h this is only x86.
> 
> This patch removes the old pci.h in order to make room for a new
> pci.h to be used by arm64, riscv, openrisc, etc.
> 
> The existing code in pci.h is moved out to x86.  On other architectures
> we clean up any outstanding references.
> 
> Suggested-by: Arnd Bergmann <arnd@arndb.de>
> Link: https://lore.kernel.org/lkml/CAK8P3a0JmPeczfmMBE__vn=Jbvf=nkbpVaZCycyv40pZNCJJXQ@mail.gmail.com/
> Signed-off-by: Stafford Horne <shorne@gmail.com>
> ---
> Since v2:
>   - Remove pci_get_legacy_ide_irq in m68k
> Since v1:
>   - Remove pci_get_legacy_ide_irq for most architectures as its not needed.
> 
>   arch/alpha/include/asm/pci.h   |  1 -
>   arch/ia64/include/asm/pci.h    |  1 -
>   arch/m68k/include/asm/pci.h    |  2 --
>   arch/powerpc/include/asm/pci.h |  1 -
>   arch/s390/include/asm/pci.h    |  1 -
>   arch/sparc/include/asm/pci.h   |  9 ---------
>   arch/x86/include/asm/pci.h     |  6 ++++--
>   arch/xtensa/include/asm/pci.h  |  3 ---
>   include/asm-generic/pci.h      | 17 -----------------
>   9 files changed, 4 insertions(+), 37 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..8ac5af0fc4da 100644
> --- a/arch/alpha/include/asm/pci.h
> +++ b/arch/alpha/include/asm/pci.h
> @@ -56,7 +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;
> diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
> index 8c163d1d0189..218412d963c2 100644
> --- a/arch/ia64/include/asm/pci.h
> +++ b/arch/ia64/include/asm/pci.h
> @@ -63,7 +63,6 @@ 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);
> 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/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>

Did not notice any problem for S390.

Acked-by: Pierre Morel <pmorel@linux.ibm.com>



-- 
Pierre Morel
IBM Lab Boeblingen