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riscv: io: Update __io_[p]ar() macros to take an argument 

The definitions of the __io_[p]ar() macros in asm-generic/io.h take the
value returned by the preceding I/O read as an argument so that
architectures can use this to create order with a subsequent delayX()
routine using a dependency.

Update the riscv barrier definitions to match, although the argument
is currently unused.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
hifive-unleashed-5.1
Will Deacon 2019-02-22 18:04:53 +00:00 committed by Catalin Marinas
parent abbbbc83a2
commit ce246c444a
1 changed files with 18 additions and 18 deletions
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36
arch/riscv/include/asm/io.h
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@ -163,20 +163,20 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
* doesn't define any ordering between the memory space and the I/O space.
*/
#define __io_br() do {} while (0)
#define __io_ar() __asm__ __volatile__ ("fence i,r" : : : "memory");
#define __io_ar(v) __asm__ __volatile__ ("fence i,r" : : : "memory");
#define __io_bw() __asm__ __volatile__ ("fence w,o" : : : "memory");
#define __io_aw() do {} while (0)
#define readb(c) ({ u8 __v; __io_br(); __v = readb_cpu(c); __io_ar(); __v; })
#define readw(c) ({ u16 __v; __io_br(); __v = readw_cpu(c); __io_ar(); __v; })
#define readl(c) ({ u32 __v; __io_br(); __v = readl_cpu(c); __io_ar(); __v; })
#define readb(c) ({ u8 __v; __io_br(); __v = readb_cpu(c); __io_ar(__v); __v; })
#define readw(c) ({ u16 __v; __io_br(); __v = readw_cpu(c); __io_ar(__v); __v; })
#define readl(c) ({ u32 __v; __io_br(); __v = readl_cpu(c); __io_ar(__v); __v; })
#define writeb(v,c) ({ __io_bw(); writeb_cpu((v),(c)); __io_aw(); })
#define writew(v,c) ({ __io_bw(); writew_cpu((v),(c)); __io_aw(); })
#define writel(v,c) ({ __io_bw(); writel_cpu((v),(c)); __io_aw(); })
#ifdef CONFIG_64BIT
#define readq(c) ({ u64 __v; __io_br(); __v = readq_cpu(c); __io_ar(); __v; })
#define readq(c) ({ u64 __v; __io_br(); __v = readq_cpu(c); __io_ar(__v); __v; })
#define writeq(v,c) ({ __io_bw(); writeq_cpu((v),(c)); __io_aw(); })
#endif
@ -198,20 +198,20 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
* writes.
*/
#define __io_pbr() __asm__ __volatile__ ("fence io,i" : : : "memory");
#define __io_par() __asm__ __volatile__ ("fence i,ior" : : : "memory");
#define __io_par(v) __asm__ __volatile__ ("fence i,ior" : : : "memory");
#define __io_pbw() __asm__ __volatile__ ("fence iow,o" : : : "memory");
#define __io_paw() __asm__ __volatile__ ("fence o,io" : : : "memory");
#define inb(c) ({ u8 __v; __io_pbr(); __v = readb_cpu((void*)(PCI_IOBASE + (c))); __io_par(); __v; })
#define inw(c) ({ u16 __v; __io_pbr(); __v = readw_cpu((void*)(PCI_IOBASE + (c))); __io_par(); __v; })
#define inl(c) ({ u32 __v; __io_pbr(); __v = readl_cpu((void*)(PCI_IOBASE + (c))); __io_par(); __v; })
#define inb(c) ({ u8 __v; __io_pbr(); __v = readb_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
#define inw(c) ({ u16 __v; __io_pbr(); __v = readw_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
#define inl(c) ({ u32 __v; __io_pbr(); __v = readl_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
#define outb(v,c) ({ __io_pbw(); writeb_cpu((v),(void*)(PCI_IOBASE + (c))); __io_paw(); })
#define outw(v,c) ({ __io_pbw(); writew_cpu((v),(void*)(PCI_IOBASE + (c))); __io_paw(); })
#define outl(v,c) ({ __io_pbw(); writel_cpu((v),(void*)(PCI_IOBASE + (c))); __io_paw(); })
#ifdef CONFIG_64BIT
#define inq(c) ({ u64 __v; __io_pbr(); __v = readq_cpu((void*)(c)); __io_par(); __v; })
#define inq(c) ({ u64 __v; __io_pbr(); __v = readq_cpu((void*)(c)); __io_par(__v); __v; })
#define outq(v,c) ({ __io_pbw(); writeq_cpu((v),(void*)(c)); __io_paw(); })
#endif
@ -254,16 +254,16 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
afence; \
}
__io_reads_ins(reads, u8, b, __io_br(), __io_ar())
__io_reads_ins(reads, u16, w, __io_br(), __io_ar())
__io_reads_ins(reads, u32, l, __io_br(), __io_ar())
__io_reads_ins(reads, u8, b, __io_br(), __io_ar(addr))
__io_reads_ins(reads, u16, w, __io_br(), __io_ar(addr))
__io_reads_ins(reads, u32, l, __io_br(), __io_ar(addr))
#define readsb(addr, buffer, count) __readsb(addr, buffer, count)
#define readsw(addr, buffer, count) __readsw(addr, buffer, count)
#define readsl(addr, buffer, count) __readsl(addr, buffer, count)
__io_reads_ins(ins, u8, b, __io_pbr(), __io_par())
__io_reads_ins(ins, u16, w, __io_pbr(), __io_par())
__io_reads_ins(ins, u32, l, __io_pbr(), __io_par())
__io_reads_ins(ins, u8, b, __io_pbr(), __io_par(addr))
__io_reads_ins(ins, u16, w, __io_pbr(), __io_par(addr))
__io_reads_ins(ins, u32, l, __io_pbr(), __io_par(addr))
#define insb(addr, buffer, count) __insb((void __iomem *)(long)addr, buffer, count)
#define insw(addr, buffer, count) __insw((void __iomem *)(long)addr, buffer, count)
#define insl(addr, buffer, count) __insl((void __iomem *)(long)addr, buffer, count)
@ -283,10 +283,10 @@ __io_writes_outs(outs, u32, l, __io_pbw(), __io_paw())
#define outsl(addr, buffer, count) __outsl((void __iomem *)(long)addr, buffer, count)
#ifdef CONFIG_64BIT
__io_reads_ins(reads, u64, q, __io_br(), __io_ar())
__io_reads_ins(reads, u64, q, __io_br(), __io_ar(addr))
#define readsq(addr, buffer, count) __readsq(addr, buffer, count)
__io_reads_ins(ins, u64, q, __io_pbr(), __io_par())
__io_reads_ins(ins, u64, q, __io_pbr(), __io_par(addr))
#define insq(addr, buffer, count) __insq((void __iomem *)addr, buffer, count)
__io_writes_outs(writes, u64, q, __io_bw(), __io_aw())