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Code Issues Releases Wiki Activity

PCI: Move isa_dma_bridge_buggy out of asm/dma.h

Browse source 
The isa_dma_bridge_buggy symbol is only used for x86_32, and only x86_32
platforms or quirks ever set it.

Add a new linux/isa-dma.h header that #defines isa_dma_bridge_buggy to 0
except on x86_32, where we keep it as a variable, and remove all the arch-
specific definitions.

[bhelgaas: commit log]
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Link: https://lore.kernel.org/r/20220722214944.831438-3-shorne@gmail.com
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Stafford Horne 2022-07-23 06:49:42 +09:00 committed by Bjorn Helgaas
parent ae85b23c65
commit abb4970ac3
23 changed files with 21 additions and 100 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
arch/alpha/include/asm/dma.h
View file

@ -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 */

5
arch/arc/include/asm/dma.h
View file

@ -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

6
arch/arm/include/asm/dma.h
View file

@ -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 */

2
arch/arm64/include/asm/pci.h
View file

@ -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)
{

2
arch/csky/include/asm/pci.h
View file

@ -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)
{

2
arch/ia64/include/asm/dma.h
View file

@ -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 */

6
arch/m68k/include/asm/dma.h
View file

@ -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 */

6
arch/microblaze/include/asm/dma.h
View file

@ -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 */

8
arch/mips/include/asm/dma.h
View file

@ -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 */

6
arch/parisc/include/asm/dma.h
View file

@ -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 */

6
arch/powerpc/include/asm/dma.h
View file

@ -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 */

2
arch/riscv/include/asm/pci.h
View file

@ -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)
{

6
arch/s390/include/asm/dma.h
View file

@ -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 */

6
arch/sh/include/asm/dma.h
View file

@ -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 */

8
arch/sparc/include/asm/dma.h
View file

@ -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;

2
arch/um/include/asm/pci.h
View file

@ -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)
{

8
arch/x86/include/asm/dma.h
View file

@ -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 */

7
arch/xtensa/include/asm/dma.h
View file

@ -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

2
drivers/comedi/drivers/comedi_isadma.c
View file

@ -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>

2
drivers/pci/pci.c
View file

@ -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);

4
drivers/pci/quirks.c
View file

@ -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

14
include/linux/isa-dma.h Normal file
View file

@ -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 */

2
sound/core/isadma.c
View file

@ -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