1c0ee7d1b2
Move pci_map_physmem(), pci_unmap_physmem(), and sandbox_set_enable_pci_map() from u-boot-sandbox.h to a new file sandbox_pci.h to simplify dependencies. Fix the header order in the PCI emul file while we are here. Co-developed-by: Claude <noreply@anthropic.com> Signed-off-by: Simon Glass <sjg@chromium.org>
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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*/
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#ifndef _ASM_SANDBOX_PCI_H_
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#define _ASM_SANDBOX_PCI_H_
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#include <asm/types.h>
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struct udevice;
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/**
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* pci_map_physmem() - map a PCI device into memory
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*
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* This is used on sandbox to map a device into memory so that it can be
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* used with normal memory access. After this call, some part of the device's
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* internal structure becomes visible.
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*
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* This function is normally called from sandbox's map_sysmem() automatically.
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*
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* @paddr: Physical memory address, normally corresponding to a PCI BAR
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* @lenp: On entry, the size of the area to map, On exit it is updated
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* to the size actually mapped, which may be less if the device
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* has less space
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* @devp: Returns the device which mapped into this space
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* @ptrp: Returns a pointer to the mapped address. The device's space
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* can be accessed as @lenp bytes starting here
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* Return: 0 if OK, -ve on error
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*/
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int pci_map_physmem(phys_addr_t paddr, unsigned long *lenp,
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struct udevice **devp, void **ptrp);
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/**
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* pci_unmap_physmem() - undo a memory mapping
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*
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* This must be called after pci_map_physmem() to undo the mapping.
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*
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* @paddr: Physical memory address, as passed to pci_map_physmem()
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* @len: Size of area mapped, as returned by pci_map_physmem()
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* @dev: Device to unmap, as returned by pci_map_physmem()
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* Return: 0 if OK, -ve on error
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*/
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int pci_unmap_physmem(const void *addr, unsigned long len,
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struct udevice *dev);
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/**
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* sandbox_set_enable_pci_map() - Enable / disable PCI address mapping
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*
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* Since address mapping involves calling every driver, provide a way to
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* enable and disable this. It can be handled automatically by the emulator
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* uclass, which knows if any emulators are currently active.
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*
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* If this is disabled, pci_map_physmem() will not be called from
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* map_sysmem().
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*
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* @enable: 0 to disable, 1 to enable
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*/
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void sandbox_set_enable_pci_map(int enable);
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#endif /* _ASM_SANDBOX_PCI_H_ */
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