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