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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122// SPDX-License-Identifier: GPL-2.0+/* * Copyright (C) 2017 HiSilicon Limited, All Rights Reserved. * Author: Gabriele Paoloni <gabriele.paoloni@huawei.com> * Author: Zhichang Yuan <yuanzhichang@hisilicon.com> */
#ifndef __LINUX_LOGIC_PIO_H#define __LINUX_LOGIC_PIO_H
#include <linux/fwnode.h>
enum { LOGIC_PIO_INDIRECT, /* Indirect IO flag */ LOGIC_PIO_CPU_MMIO, /* Memory-mapped IO flag */};
struct logic_pio_hwaddr { struct list_head list; const struct fwnode_handle *fwnode; resource_size_t hw_start; resource_size_t io_start; resource_size_t size; /* range size populated */ unsigned long flags;
void *hostdata; const struct logic_pio_host_ops *ops;};
struct logic_pio_host_ops { u32 (*in)(void *hostdata, unsigned long addr, size_t dwidth); void (*out)(void *hostdata, unsigned long addr, u32 val, size_t dwidth); u32 (*ins)(void *hostdata, unsigned long addr, void *buffer, size_t dwidth, unsigned int count); void (*outs)(void *hostdata, unsigned long addr, const void *buffer, size_t dwidth, unsigned int count);};
#ifdef CONFIG_INDIRECT_PIOu8 logic_inb(unsigned long addr);u16 logic_inw(unsigned long addr);u32 logic_inl(unsigned long addr);void logic_outb(u8 value, unsigned long addr);void logic_outw(u16 value, unsigned long addr);void logic_outl(u32 value, unsigned long addr);void logic_insb(unsigned long addr, void *buffer, unsigned int count);void logic_insl(unsigned long addr, void *buffer, unsigned int count);void logic_insw(unsigned long addr, void *buffer, unsigned int count);void logic_outsb(unsigned long addr, const void *buffer, unsigned int count);void logic_outsw(unsigned long addr, const void *buffer, unsigned int count);void logic_outsl(unsigned long addr, const void *buffer, unsigned int count);
#ifndef inb#define inb logic_inb#endif
#ifndef inw#define inw logic_inw#endif
#ifndef inl#define inl logic_inl#endif
#ifndef outb#define outb logic_outb#endif
#ifndef outw#define outw logic_outw#endif
#ifndef outl#define outl logic_outl#endif
#ifndef insb#define insb logic_insb#endif
#ifndef insw#define insw logic_insw#endif
#ifndef insl#define insl logic_insl#endif
#ifndef outsb#define outsb logic_outsb#endif
#ifndef outsw#define outsw logic_outsw#endif
#ifndef outsl#define outsl logic_outsl#endif
/* * We reserve 0x4000 bytes for Indirect IO as so far this library is only * used by the HiSilicon LPC Host. If needed, we can reserve a wider IO * area by redefining the macro below. */#define PIO_INDIRECT_SIZE 0x4000#else#define PIO_INDIRECT_SIZE 0#endif /* CONFIG_INDIRECT_PIO */#define MMIO_UPPER_LIMIT (IO_SPACE_LIMIT - PIO_INDIRECT_SIZE)
struct logic_pio_hwaddr *find_io_range_by_fwnode(const struct fwnode_handle *fwnode);unsigned long logic_pio_trans_hwaddr(const struct fwnode_handle *fwnode, resource_size_t hw_addr, resource_size_t size);int logic_pio_register_range(struct logic_pio_hwaddr *newrange);void logic_pio_unregister_range(struct logic_pio_hwaddr *range);resource_size_t logic_pio_to_hwaddr(unsigned long pio);unsigned long logic_pio_trans_cpuaddr(resource_size_t hw_addr);
#endif /* __LINUX_LOGIC_PIO_H */