mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 09:52:03 +07:00
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
218 lines
6.9 KiB
C
218 lines
6.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* linux/include/amba/bus.h
|
|
*
|
|
* This device type deals with ARM PrimeCells and anything else that
|
|
* presents a proper CID (0xB105F00D) at the end of the I/O register
|
|
* region or that is derived from a PrimeCell.
|
|
*
|
|
* Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
|
|
*/
|
|
#ifndef ASMARM_AMBA_H
|
|
#define ASMARM_AMBA_H
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/device.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/err.h>
|
|
#include <linux/resource.h>
|
|
#include <linux/regulator/consumer.h>
|
|
|
|
#define AMBA_NR_IRQS 9
|
|
#define AMBA_CID 0xb105f00d
|
|
#define CORESIGHT_CID 0xb105900d
|
|
|
|
/*
|
|
* CoreSight Architecture specification updates the ID specification
|
|
* for components on the AMBA bus. (ARM IHI 0029E)
|
|
*
|
|
* Bits 15:12 of the CID are the device class.
|
|
*
|
|
* Class 0xF remains for PrimeCell and legacy components. (AMBA_CID above)
|
|
* Class 0x9 defines the component as CoreSight (CORESIGHT_CID above)
|
|
* Class 0x0, 0x1, 0xB, 0xE define components that do not have driver support
|
|
* at present.
|
|
* Class 0x2-0x8,0xA and 0xD-0xD are presently reserved.
|
|
*
|
|
* Remaining CID bits stay as 0xb105-00d
|
|
*/
|
|
|
|
/**
|
|
* Class 0x9 components use additional values to form a Unique Component
|
|
* Identifier (UCI), where peripheral ID values are identical for different
|
|
* components. Passed to the amba bus code from the component driver via
|
|
* the amba_id->data pointer.
|
|
* @devarch : coresight devarch register value
|
|
* @devarch_mask: mask bits used for matching. 0 indicates UCI not used.
|
|
* @devtype : coresight device type value
|
|
* @data : additional driver data. As we have usurped the original
|
|
* pointer some devices may still need additional data
|
|
*/
|
|
struct amba_cs_uci_id {
|
|
unsigned int devarch;
|
|
unsigned int devarch_mask;
|
|
unsigned int devtype;
|
|
void *data;
|
|
};
|
|
|
|
/* define offsets for registers used by UCI */
|
|
#define UCI_REG_DEVTYPE_OFFSET 0xFCC
|
|
#define UCI_REG_DEVARCH_OFFSET 0xFBC
|
|
|
|
struct clk;
|
|
|
|
struct amba_device {
|
|
struct device dev;
|
|
struct resource res;
|
|
struct clk *pclk;
|
|
unsigned int periphid;
|
|
unsigned int cid;
|
|
struct amba_cs_uci_id uci;
|
|
unsigned int irq[AMBA_NR_IRQS];
|
|
char *driver_override;
|
|
};
|
|
|
|
struct amba_driver {
|
|
struct device_driver drv;
|
|
int (*probe)(struct amba_device *, const struct amba_id *);
|
|
int (*remove)(struct amba_device *);
|
|
void (*shutdown)(struct amba_device *);
|
|
const struct amba_id *id_table;
|
|
};
|
|
|
|
/*
|
|
* Constants for the designer field of the Peripheral ID register. When bit 7
|
|
* is set to '1', bits [6:0] should be the JEP106 manufacturer identity code.
|
|
*/
|
|
enum amba_vendor {
|
|
AMBA_VENDOR_ARM = 0x41,
|
|
AMBA_VENDOR_ST = 0x80,
|
|
AMBA_VENDOR_QCOM = 0x51,
|
|
AMBA_VENDOR_LSI = 0xb6,
|
|
AMBA_VENDOR_LINUX = 0xfe, /* This value is not official */
|
|
};
|
|
|
|
/* This is used to generate pseudo-ID for AMBA device */
|
|
#define AMBA_LINUX_ID(conf, rev, part) \
|
|
(((conf) & 0xff) << 24 | ((rev) & 0xf) << 20 | \
|
|
AMBA_VENDOR_LINUX << 12 | ((part) & 0xfff))
|
|
|
|
extern struct bus_type amba_bustype;
|
|
|
|
#define to_amba_device(d) container_of(d, struct amba_device, dev)
|
|
|
|
#define amba_get_drvdata(d) dev_get_drvdata(&d->dev)
|
|
#define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p)
|
|
|
|
int amba_driver_register(struct amba_driver *);
|
|
void amba_driver_unregister(struct amba_driver *);
|
|
struct amba_device *amba_device_alloc(const char *, resource_size_t, size_t);
|
|
void amba_device_put(struct amba_device *);
|
|
int amba_device_add(struct amba_device *, struct resource *);
|
|
int amba_device_register(struct amba_device *, struct resource *);
|
|
struct amba_device *amba_apb_device_add(struct device *parent, const char *name,
|
|
resource_size_t base, size_t size,
|
|
int irq1, int irq2, void *pdata,
|
|
unsigned int periphid);
|
|
struct amba_device *amba_ahb_device_add(struct device *parent, const char *name,
|
|
resource_size_t base, size_t size,
|
|
int irq1, int irq2, void *pdata,
|
|
unsigned int periphid);
|
|
struct amba_device *
|
|
amba_apb_device_add_res(struct device *parent, const char *name,
|
|
resource_size_t base, size_t size, int irq1,
|
|
int irq2, void *pdata, unsigned int periphid,
|
|
struct resource *resbase);
|
|
struct amba_device *
|
|
amba_ahb_device_add_res(struct device *parent, const char *name,
|
|
resource_size_t base, size_t size, int irq1,
|
|
int irq2, void *pdata, unsigned int periphid,
|
|
struct resource *resbase);
|
|
void amba_device_unregister(struct amba_device *);
|
|
struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int);
|
|
int amba_request_regions(struct amba_device *, const char *);
|
|
void amba_release_regions(struct amba_device *);
|
|
|
|
static inline int amba_pclk_enable(struct amba_device *dev)
|
|
{
|
|
return clk_enable(dev->pclk);
|
|
}
|
|
|
|
static inline void amba_pclk_disable(struct amba_device *dev)
|
|
{
|
|
clk_disable(dev->pclk);
|
|
}
|
|
|
|
static inline int amba_pclk_prepare(struct amba_device *dev)
|
|
{
|
|
return clk_prepare(dev->pclk);
|
|
}
|
|
|
|
static inline void amba_pclk_unprepare(struct amba_device *dev)
|
|
{
|
|
clk_unprepare(dev->pclk);
|
|
}
|
|
|
|
/* Some drivers don't use the struct amba_device */
|
|
#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
|
|
#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
|
|
#define AMBA_MANF_BITS(a) (((a) >> 12) & 0xff)
|
|
#define AMBA_PART_BITS(a) ((a) & 0xfff)
|
|
|
|
#define amba_config(d) AMBA_CONFIG_BITS((d)->periphid)
|
|
#define amba_rev(d) AMBA_REV_BITS((d)->periphid)
|
|
#define amba_manf(d) AMBA_MANF_BITS((d)->periphid)
|
|
#define amba_part(d) AMBA_PART_BITS((d)->periphid)
|
|
|
|
#define __AMBA_DEV(busid, data, mask) \
|
|
{ \
|
|
.coherent_dma_mask = mask, \
|
|
.init_name = busid, \
|
|
.platform_data = data, \
|
|
}
|
|
|
|
/*
|
|
* APB devices do not themselves have the ability to address memory,
|
|
* so DMA masks should be zero (much like USB peripheral devices.)
|
|
* The DMA controller DMA masks should be used instead (much like
|
|
* USB host controllers in conventional PCs.)
|
|
*/
|
|
#define AMBA_APB_DEVICE(name, busid, id, base, irqs, data) \
|
|
struct amba_device name##_device = { \
|
|
.dev = __AMBA_DEV(busid, data, 0), \
|
|
.res = DEFINE_RES_MEM(base, SZ_4K), \
|
|
.irq = irqs, \
|
|
.periphid = id, \
|
|
}
|
|
|
|
/*
|
|
* AHB devices are DMA capable, so set their DMA masks
|
|
*/
|
|
#define AMBA_AHB_DEVICE(name, busid, id, base, irqs, data) \
|
|
struct amba_device name##_device = { \
|
|
.dev = __AMBA_DEV(busid, data, ~0ULL), \
|
|
.res = DEFINE_RES_MEM(base, SZ_4K), \
|
|
.irq = irqs, \
|
|
.periphid = id, \
|
|
}
|
|
|
|
/*
|
|
* module_amba_driver() - Helper macro for drivers that don't do anything
|
|
* special in module init/exit. This eliminates a lot of boilerplate. Each
|
|
* module may only use this macro once, and calling it replaces module_init()
|
|
* and module_exit()
|
|
*/
|
|
#define module_amba_driver(__amba_drv) \
|
|
module_driver(__amba_drv, amba_driver_register, amba_driver_unregister)
|
|
|
|
/*
|
|
* builtin_amba_driver() - Helper macro for drivers that don't do anything
|
|
* special in driver initcall. This eliminates a lot of boilerplate. Each
|
|
* driver may only use this macro once, and calling it replaces the instance
|
|
* device_initcall().
|
|
*/
|
|
#define builtin_amba_driver(__amba_drv) \
|
|
builtin_driver(__amba_drv, amba_driver_register)
|
|
|
|
#endif
|