mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-23 03:23:47 +00:00
185f812c41
Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
175 lines
4.6 KiB
C
175 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright 2019 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#ifndef __p2sb_h
|
|
#define __p2sb_h
|
|
|
|
/* Port Id lives in bits 23:16 and register offset lives in 15:0 of address */
|
|
#define PCR_PORTID_SHIFT 16
|
|
|
|
#if !defined(__ACPI__)
|
|
|
|
/* These registers contain IOAPIC and HPET devfn */
|
|
#define PCH_P2SB_IBDF 0x6c
|
|
#define PCH_P2SB_HBDF 0x70
|
|
|
|
/**
|
|
* struct p2sb_child_plat - Information about each child of a p2sb device
|
|
*
|
|
* @pid: Port ID for this child
|
|
*/
|
|
struct p2sb_child_plat {
|
|
uint pid;
|
|
};
|
|
|
|
/**
|
|
* struct p2sb_uc_priv - information for the uclass about each device
|
|
*
|
|
* This must be set up by the driver when it is probed
|
|
*
|
|
* @mmio_base: Base address of P2SB region
|
|
*/
|
|
struct p2sb_uc_priv {
|
|
uint mmio_base;
|
|
};
|
|
|
|
/**
|
|
* struct p2sb_ops - Operations for the P2SB
|
|
*/
|
|
struct p2sb_ops {
|
|
/**
|
|
* set_hide() - Set/clear the 'hide' bit on the p2sb
|
|
*
|
|
* This device can be hidden from the PCI bus if needed. This method
|
|
* can be called before the p2sb is probed.
|
|
*
|
|
* @dev: P2SB device
|
|
* @hide: true to hide the device, false to show it
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int (*set_hide)(struct udevice *dev, bool hide);
|
|
};
|
|
|
|
#define p2sb_get_ops(dev) ((struct p2sb_ops *)(dev)->driver->ops)
|
|
|
|
/**
|
|
* p2sb_set_hide() - Set/clear the 'hide' bit on the p2sb
|
|
*
|
|
* This device can be hidden from the PCI bus if needed. This method
|
|
* can be called before the p2sb is probed.
|
|
*
|
|
* @dev: P2SB device
|
|
* @hide: true to hide the device, false to show it
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int p2sb_set_hide(struct udevice *dev, bool hide);
|
|
|
|
/**
|
|
* pcr_read32/16/8() - Read from a PCR device
|
|
*
|
|
* Reads data from a PCR device within the P2SB
|
|
*
|
|
* @dev: Device to read from
|
|
* @offset: Offset within device to read
|
|
* Return: value read
|
|
*/
|
|
uint pcr_read32(struct udevice *dev, uint offset);
|
|
uint pcr_read16(struct udevice *dev, uint offset);
|
|
uint pcr_read8(struct udevice *dev, uint offset);
|
|
|
|
/**
|
|
* pcr_read32/16/8() - Write to a PCR device
|
|
*
|
|
* Writes data to a PCR device within the P2SB
|
|
*
|
|
* @dev: Device to write to
|
|
* @offset: Offset within device to write
|
|
* @data: Data to write
|
|
*/
|
|
void pcr_write32(struct udevice *dev, uint offset, uint data);
|
|
void pcr_write16(struct udevice *dev, uint offset, uint data);
|
|
void pcr_write8(struct udevice *dev, uint offset, uint data);
|
|
|
|
/**
|
|
* pcr_clrsetbits32/16/8() - Update a PCR device
|
|
*
|
|
* Updates dat in a PCR device within the P2SB
|
|
*
|
|
* This reads from the device, clears and set bits, then writes back.
|
|
*
|
|
* new_data = (old_data & ~clr) | set
|
|
*
|
|
* @dev: Device to update
|
|
* @offset: Offset within device to update
|
|
* @clr: Bits to clear after reading
|
|
* @set: Bits to set before writing
|
|
*/
|
|
void pcr_clrsetbits32(struct udevice *dev, uint offset, uint clr, uint set);
|
|
void pcr_clrsetbits16(struct udevice *dev, uint offset, uint clr, uint set);
|
|
void pcr_clrsetbits8(struct udevice *dev, uint offset, uint clr, uint set);
|
|
|
|
static inline void pcr_setbits32(struct udevice *dev, uint offset, uint set)
|
|
{
|
|
return pcr_clrsetbits32(dev, offset, 0, set);
|
|
}
|
|
|
|
static inline void pcr_setbits16(struct udevice *dev, uint offset, uint set)
|
|
{
|
|
return pcr_clrsetbits16(dev, offset, 0, set);
|
|
}
|
|
|
|
static inline void pcr_setbits8(struct udevice *dev, uint offset, uint set)
|
|
{
|
|
return pcr_clrsetbits8(dev, offset, 0, set);
|
|
}
|
|
|
|
static inline void pcr_clrbits32(struct udevice *dev, uint offset, uint clr)
|
|
{
|
|
return pcr_clrsetbits32(dev, offset, clr, 0);
|
|
}
|
|
|
|
static inline void pcr_clrbits16(struct udevice *dev, uint offset, uint clr)
|
|
{
|
|
return pcr_clrsetbits16(dev, offset, clr, 0);
|
|
}
|
|
|
|
static inline void pcr_clrbits8(struct udevice *dev, uint offset, uint clr)
|
|
{
|
|
return pcr_clrsetbits8(dev, offset, clr, 0);
|
|
}
|
|
|
|
/**
|
|
* p2sb_set_port_id() - Set the port ID for a p2sb child device
|
|
*
|
|
* This must be called in a device's bind() method when OF_PLATDATA is used
|
|
* since the uclass cannot access the device's of-platdata.
|
|
*
|
|
* @dev: Child device (whose parent is UCLASS_P2SB)
|
|
* @portid: Port ID of child device
|
|
* Return: 0 if OK, -ENODEV is the p2sb device could not be found
|
|
*/
|
|
int p2sb_set_port_id(struct udevice *dev, int portid);
|
|
|
|
/**
|
|
* p2sb_get_port_id() - Get the port ID for a p2sb child device
|
|
*
|
|
* @dev: Child device (whose parent is UCLASS_P2SB)
|
|
* Return: Port ID of that child
|
|
*/
|
|
int p2sb_get_port_id(struct udevice *dev);
|
|
|
|
/**
|
|
* pcr_reg_address() Convert an offset in p2sb space to an absolute address
|
|
*
|
|
* @dev: Child device (whose parent is UCLASS_P2SB)
|
|
* @offset: Offset within that child's address space
|
|
* Return: pointer to that offset within the child's address space
|
|
*/
|
|
void *pcr_reg_address(struct udevice *dev, uint offset);
|
|
|
|
#endif /* !__ACPI__ */
|
|
|
|
#endif
|