diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2020-08-26 01:36:07 +0200 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2020-08-26 01:36:07 +0200 |
commit | ceb2465c51195967f11f6507538579816ac67cb8 (patch) | |
tree | eab534b1062608e36a7b54ccc7be693625f235b8 /arch/sh/include/asm/io.h | |
parent | f107cee94ba4d2c7357fde59a1d84346c73d4958 (diff) | |
parent | 821fc9e261f3af235752f46e59084467cfd440c4 (diff) |
Merge tag 'irqchip-fixes-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgentirq-urgent-2020-08-30
Pull irqchip fixes from Marc Zyngier:
- Revert the wholesale conversion to platform drivers of the pdc, sysirq
and cirq drivers, as it breaks a number of platforms even when the
driver is built-in (probe ordering bites you).
- Prevent interrupt from being lost with the STM32 exti driver
- Fix wake-up interrupts for the MIPS Ingenic driver
- Fix an embarassing typo in the new module helpers, leading to the probe
failing most of the time
- The promised TI firmware rework that couldn't make it into the merge
window due to a very badly managed set of dependencies
Diffstat (limited to 'arch/sh/include/asm/io.h')
-rw-r--r-- | arch/sh/include/asm/io.h | 119 |
1 files changed, 14 insertions, 105 deletions
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h index ec587b583822..6d5c6463bc07 100644 --- a/arch/sh/include/asm/io.h +++ b/arch/sh/include/asm/io.h @@ -21,10 +21,8 @@ #include <linux/pgtable.h> #include <asm-generic/iomap.h> -#ifdef __KERNEL__ #define __IO_PREFIX generic #include <asm/io_generic.h> -#include <asm/io_trapped.h> #include <asm-generic/pci_iomap.h> #include <mach/mangle-port.h> @@ -244,125 +242,38 @@ unsigned long long poke_real_address_q(unsigned long long addr, #define phys_to_virt(address) (__va(address)) #endif -/* - * On 32-bit SH, we traditionally have the whole physical address space - * mapped at all times (as MIPS does), so "ioremap()" and "iounmap()" do - * not need to do anything but place the address in the proper segment. - * This is true for P1 and P2 addresses, as well as some P3 ones. - * However, most of the P3 addresses and newer cores using extended - * addressing need to map through page tables, so the ioremap() - * implementation becomes a bit more complicated. - * - * See arch/sh/mm/ioremap.c for additional notes on this. - * - * We cheat a bit and always return uncachable areas until we've fixed - * the drivers to handle caching properly. - * - * On the SH-5 the concept of segmentation in the 1:1 PXSEG sense simply - * doesn't exist, so everything must go through page tables. - */ #ifdef CONFIG_MMU +void iounmap(void __iomem *addr); void __iomem *__ioremap_caller(phys_addr_t offset, unsigned long size, pgprot_t prot, void *caller); -void iounmap(void __iomem *addr); - -static inline void __iomem * -__ioremap(phys_addr_t offset, unsigned long size, pgprot_t prot) -{ - return __ioremap_caller(offset, size, prot, __builtin_return_address(0)); -} - -static inline void __iomem * -__ioremap_29bit(phys_addr_t offset, unsigned long size, pgprot_t prot) -{ -#ifdef CONFIG_29BIT - phys_addr_t last_addr = offset + size - 1; - - /* - * For P1 and P2 space this is trivial, as everything is already - * mapped. Uncached access for P1 addresses are done through P2. - * In the P3 case or for addresses outside of the 29-bit space, - * mapping must be done by the PMB or by using page tables. - */ - if (likely(PXSEG(offset) < P3SEG && PXSEG(last_addr) < P3SEG)) { - u64 flags = pgprot_val(prot); - - /* - * Anything using the legacy PTEA space attributes needs - * to be kicked down to page table mappings. - */ - if (unlikely(flags & _PAGE_PCC_MASK)) - return NULL; - if (unlikely(flags & _PAGE_CACHABLE)) - return (void __iomem *)P1SEGADDR(offset); - - return (void __iomem *)P2SEGADDR(offset); - } - - /* P4 above the store queues are always mapped. */ - if (unlikely(offset >= P3_ADDR_MAX)) - return (void __iomem *)P4SEGADDR(offset); -#endif - - return NULL; -} - -static inline void __iomem * -__ioremap_mode(phys_addr_t offset, unsigned long size, pgprot_t prot) -{ - void __iomem *ret; - - ret = __ioremap_trapped(offset, size); - if (ret) - return ret; - - ret = __ioremap_29bit(offset, size, prot); - if (ret) - return ret; - - return __ioremap(offset, size, prot); -} -#else -#define __ioremap(offset, size, prot) ((void __iomem *)(offset)) -#define __ioremap_mode(offset, size, prot) ((void __iomem *)(offset)) -static inline void iounmap(void __iomem *addr) {} -#endif /* CONFIG_MMU */ static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size) { - return __ioremap_mode(offset, size, PAGE_KERNEL_NOCACHE); + return __ioremap_caller(offset, size, PAGE_KERNEL_NOCACHE, + __builtin_return_address(0)); } static inline void __iomem * ioremap_cache(phys_addr_t offset, unsigned long size) { - return __ioremap_mode(offset, size, PAGE_KERNEL); + return __ioremap_caller(offset, size, PAGE_KERNEL, + __builtin_return_address(0)); } #define ioremap_cache ioremap_cache #ifdef CONFIG_HAVE_IOREMAP_PROT -static inline void __iomem * -ioremap_prot(phys_addr_t offset, unsigned long size, unsigned long flags) +static inline void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size, + unsigned long flags) { - return __ioremap_mode(offset, size, __pgprot(flags)); + return __ioremap_caller(offset, size, __pgprot(flags), + __builtin_return_address(0)); } -#endif +#endif /* CONFIG_HAVE_IOREMAP_PROT */ -#ifdef CONFIG_IOREMAP_FIXED -extern void __iomem *ioremap_fixed(phys_addr_t, unsigned long, pgprot_t); -extern int iounmap_fixed(void __iomem *); -extern void ioremap_fixed_init(void); -#else -static inline void __iomem * -ioremap_fixed(phys_addr_t phys_addr, unsigned long size, pgprot_t prot) -{ - BUG(); - return NULL; -} - -static inline void ioremap_fixed_init(void) { } -static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; } -#endif +#else /* CONFIG_MMU */ +#define iounmap(addr) do { } while (0) +#define ioremap(offset, size) ((void __iomem *)(unsigned long)(offset)) +#endif /* CONFIG_MMU */ #define ioremap_uc ioremap @@ -381,6 +292,4 @@ static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; } int valid_phys_addr_range(phys_addr_t addr, size_t size); int valid_mmap_phys_addr_range(unsigned long pfn, size_t size); -#endif /* __KERNEL__ */ - #endif /* __ASM_SH_IO_H */ |