1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ALPHA_MACHVEC_H
3#define __ALPHA_MACHVEC_H 1
4
5#include <linux/types.h>
6
7/*
8 *	This file gets pulled in by asm/io.h from user space. We don't
9 *	want most of this escaping.
10 */
11
12#ifdef __KERNEL__
13
14/* The following structure vectors all of the I/O and IRQ manipulation
15   from the generic kernel to the hardware specific backend.  */
16
17struct task_struct;
18struct mm_struct;
19struct vm_area_struct;
20struct linux_hose_info;
21struct pci_dev;
22struct pci_ops;
23struct pci_controller;
24struct _alpha_agp_info;
25struct rtc_time;
26
27struct alpha_machine_vector
28{
29	/* This "belongs" down below with the rest of the runtime
30	   variables, but it is convenient for entry.S if these
31	   two slots are at the beginning of the struct.  */
32	unsigned long hae_cache;
33	unsigned long *hae_register;
34
35	int nr_irqs;
36	int rtc_port;
37	int rtc_boot_cpu_only;
38	unsigned int max_asn;
39	unsigned long max_isa_dma_address;
40	unsigned long irq_probe_mask;
41	unsigned long iack_sc;
42	unsigned long min_io_address;
43	unsigned long min_mem_address;
44	unsigned long pci_dac_offset;
45
46	void (*mv_pci_tbi)(struct pci_controller *hose,
47			   dma_addr_t start, dma_addr_t end);
48
49	u8 (*mv_ioread8)(const void __iomem *);
50	u16 (*mv_ioread16)(const void __iomem *);
51	u32 (*mv_ioread32)(const void __iomem *);
52	u64 (*mv_ioread64)(const void __iomem *);
53
54	void (*mv_iowrite8)(u8, void __iomem *);
55	void (*mv_iowrite16)(u16, void __iomem *);
56	void (*mv_iowrite32)(u32, void __iomem *);
57	void (*mv_iowrite64)(u64, void __iomem *);
58
59	u8 (*mv_readb)(const volatile void __iomem *);
60	u16 (*mv_readw)(const volatile void __iomem *);
61	u32 (*mv_readl)(const volatile void __iomem *);
62	u64 (*mv_readq)(const volatile void __iomem *);
63
64	void (*mv_writeb)(u8, volatile void __iomem *);
65	void (*mv_writew)(u16, volatile void __iomem *);
66	void (*mv_writel)(u32, volatile void __iomem *);
67	void (*mv_writeq)(u64, volatile void __iomem *);
68
69	void __iomem *(*mv_ioportmap)(unsigned long);
70	void __iomem *(*mv_ioremap)(unsigned long, unsigned long);
71	void (*mv_iounmap)(volatile void __iomem *);
72	int (*mv_is_ioaddr)(unsigned long);
73	int (*mv_is_mmio)(const volatile void __iomem *);
74
75	void (*mv_switch_mm)(struct mm_struct *, struct mm_struct *,
76			     struct task_struct *);
77	void (*mv_activate_mm)(struct mm_struct *, struct mm_struct *);
78
79	void (*mv_flush_tlb_current)(struct mm_struct *);
80	void (*mv_flush_tlb_current_page)(struct mm_struct * mm,
81					  struct vm_area_struct *vma,
82					  unsigned long addr);
83
84	void (*update_irq_hw)(unsigned long, unsigned long, int);
85	void (*ack_irq)(unsigned long);
86	void (*device_interrupt)(unsigned long vector);
87	void (*machine_check)(unsigned long vector, unsigned long la);
88
89	void (*smp_callin)(void);
90	void (*init_arch)(void);
91	void (*init_irq)(void);
92	void (*init_rtc)(void);
93	void (*init_pci)(void);
94	void (*kill_arch)(int);
95
96	u8 (*pci_swizzle)(struct pci_dev *, u8 *);
97	int (*pci_map_irq)(const struct pci_dev *, u8, u8);
98	struct pci_ops *pci_ops;
99
100	struct _alpha_agp_info *(*agp_info)(void);
101
102	const char *vector_name;
103
104	/* System specific parameters.  */
105	union {
106	    struct {
107		unsigned long gru_int_req_bits;
108	    } cia;
109
110	    struct {
111		unsigned long gamma_bias;
112	    } t2;
113
114	    struct {
115		unsigned int route_tab;
116	    } sio;
117	} sys;
118};
119
120extern struct alpha_machine_vector alpha_mv;
121
122#ifdef CONFIG_ALPHA_GENERIC
123extern int alpha_using_srm;
124extern int alpha_using_qemu;
125#else
126# ifdef CONFIG_ALPHA_SRM
127#  define alpha_using_srm 1
128# else
129#  define alpha_using_srm 0
130# endif
131# ifdef CONFIG_ALPHA_QEMU
132#  define alpha_using_qemu 1
133# else
134#  define alpha_using_qemu 0
135# endif
136#endif /* GENERIC */
137
138#endif /* __KERNEL__ */
139#endif /* __ALPHA_MACHVEC_H */
140