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ea3ee193cb
Compiling with gcc 13 results in an error:
drivers/axi/axi-emul-uclass.c:16:5: warning: conflicting types for
‘axi_sandbox_get_emul’ due to enum/integer mismatch; have
‘int(struct udevice *, ulong, enum axi_size_t, struct udevice **)’
{aka ‘int(struct udevice *, long unsigned int, enum axi_size_t,
struct udevice **)’} [-Wenum-int-mismatch]
16 | int axi_sandbox_get_emul(struct udevice *bus, ulong address,
| ^~~~~~~~~~~~~~~~~~~~
In file included from drivers/axi/axi-emul-uclass.c:14:
./arch/sandbox/include/asm/axi.h:48:5: note: previous declaration of
‘axi_sandbox_get_emul’ with type ‘int(struct udevice *, ulong, uint,
struct udevice **)’ {aka ‘int(struct udevice *, long unsigned int,
unsigned int, struct udevice **)’}
48 | int axi_sandbox_get_emul(struct udevice *bus, ulong address, uint length,
| ^~~~~~~~~~~~~~~~~~~~
Adjust the header definition to match the implementation.
Define the size parameter as constant.
Fixes: 9a8bcabd8a ("axi: Add AXI sandbox driver and simple emulator")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2018
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* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
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*/
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#ifndef __asm_axi_h
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#define __asm_axi_h
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#define axi_emul_get_ops(dev) ((struct axi_emul_ops *)(dev)->driver->ops)
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/**
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* axi_sandbox_get_emul() - Retrieve a pointer to a AXI emulation device
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* @bus: The AXI bus from which to retrieve a emulation device
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* @address: The address of a transfer that should be handled by a emulation
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* device
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* @size: A constant indicating the data width of the transfer that
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* should be handled by an emulation device
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* @emulp: Pointer to a buffer receiving the emulation device that handles
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* the transfer specified by the address and length parameters
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*
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* To test the AXI uclass, we implement a simple AXI emulation device, which is
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* a virtual device on a AXI bus that exposes a simple storage interface: When
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* reading and writing from the device, the addresses are translated to offsets
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* within the device's storage. For write accesses the data is written to the
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* specified storage offset, and for read accesses the data is read from the
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* specified storage offset.
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*
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* A DTS entry might look like this:
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*
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* axi: axi@0 {
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* compatible = "sandbox,axi";
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* #address-cells = <0x1>;
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* #size-cells = <0x1>;
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* store@0 {
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* compatible = "sandbox,sandbox_store";
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* reg = <0x0 0x400>;
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* };
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* };
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*
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* This function may then be used to retrieve the pointer to the sandbox_store
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* emulation device given the AXI bus device, and the data (address, data
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* width) of a AXI transfer which should be handled by a emulation device.
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*
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* Return: 0 of OK, -ENODEV if no device capable of handling the specified
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* transfer exists or the device could not be retrieved
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*/
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int axi_sandbox_get_emul(struct udevice *bus, ulong address,
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const enum axi_size_t size, struct udevice **emulp);
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/**
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* axi_get_store() - Get address of internal storage of a emulated AXI device
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* @dev: Emulated AXI device to get the pointer of the internal storage
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* for.
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* @storep: Pointer to the internal storage of the emulated AXI device.
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*
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* To preset or read back the contents internal storage of the emulated AXI
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* device, this function returns the pointer to the storage. Changes to the
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* contents of the storage are reflected when using the AXI read/write API
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* methods, and vice versa, so by using this method expected read data can be
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* set up in advance, and written data can be checked in unit tests.
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*
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* Return: 0 if OK, -ve on error.
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*/
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int axi_get_store(struct udevice *dev, u8 **storep);
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#endif /* __asm_axi_h */
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