1*a2927e09SBin Meng /*
2*a2927e09SBin Meng * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
3*a2927e09SBin Meng *
4*a2927e09SBin Meng * Adapted from coreboot src/include/device/pnp_def.h
5*a2927e09SBin Meng * and arch/x86/include/arch/io.h
6*a2927e09SBin Meng *
7*a2927e09SBin Meng * SPDX-License-Identifier: GPL-2.0+
8*a2927e09SBin Meng */
9*a2927e09SBin Meng
10*a2927e09SBin Meng #ifndef _ASM_PNP_DEF_H_
11*a2927e09SBin Meng #define _ASM_PNP_DEF_H_
12*a2927e09SBin Meng
13*a2927e09SBin Meng #include <asm/io.h>
14*a2927e09SBin Meng
15*a2927e09SBin Meng #define PNP_IDX_EN 0x30
16*a2927e09SBin Meng #define PNP_IDX_IO0 0x60
17*a2927e09SBin Meng #define PNP_IDX_IO1 0x62
18*a2927e09SBin Meng #define PNP_IDX_IO2 0x64
19*a2927e09SBin Meng #define PNP_IDX_IO3 0x66
20*a2927e09SBin Meng #define PNP_IDX_IRQ0 0x70
21*a2927e09SBin Meng #define PNP_IDX_IRQ1 0x72
22*a2927e09SBin Meng #define PNP_IDX_DRQ0 0x74
23*a2927e09SBin Meng #define PNP_IDX_DRQ1 0x75
24*a2927e09SBin Meng #define PNP_IDX_MSC0 0xf0
25*a2927e09SBin Meng #define PNP_IDX_MSC1 0xf1
26*a2927e09SBin Meng
27*a2927e09SBin Meng /* Generic functions for pnp devices */
28*a2927e09SBin Meng
29*a2927e09SBin Meng /*
30*a2927e09SBin Meng * pnp device is a 16-bit integer composed of its i/o port address at high byte
31*a2927e09SBin Meng * and logic function number at low byte.
32*a2927e09SBin Meng */
33*a2927e09SBin Meng #define PNP_DEV(PORT, FUNC) (((PORT) << 8) | (FUNC))
34*a2927e09SBin Meng
pnp_write_config(uint16_t dev,uint8_t reg,uint8_t value)35*a2927e09SBin Meng static inline void pnp_write_config(uint16_t dev, uint8_t reg, uint8_t value)
36*a2927e09SBin Meng {
37*a2927e09SBin Meng uint8_t port = dev >> 8;
38*a2927e09SBin Meng
39*a2927e09SBin Meng outb(reg, port);
40*a2927e09SBin Meng outb(value, port + 1);
41*a2927e09SBin Meng }
42*a2927e09SBin Meng
pnp_read_config(uint16_t dev,uint8_t reg)43*a2927e09SBin Meng static inline uint8_t pnp_read_config(uint16_t dev, uint8_t reg)
44*a2927e09SBin Meng {
45*a2927e09SBin Meng uint8_t port = dev >> 8;
46*a2927e09SBin Meng
47*a2927e09SBin Meng outb(reg, port);
48*a2927e09SBin Meng return inb(port + 1);
49*a2927e09SBin Meng }
50*a2927e09SBin Meng
pnp_set_logical_device(uint16_t dev)51*a2927e09SBin Meng static inline void pnp_set_logical_device(uint16_t dev)
52*a2927e09SBin Meng {
53*a2927e09SBin Meng uint8_t device = dev & 0xff;
54*a2927e09SBin Meng
55*a2927e09SBin Meng pnp_write_config(dev, 0x07, device);
56*a2927e09SBin Meng }
57*a2927e09SBin Meng
pnp_set_enable(uint16_t dev,int enable)58*a2927e09SBin Meng static inline void pnp_set_enable(uint16_t dev, int enable)
59*a2927e09SBin Meng {
60*a2927e09SBin Meng pnp_write_config(dev, PNP_IDX_EN, enable ? 1 : 0);
61*a2927e09SBin Meng }
62*a2927e09SBin Meng
pnp_read_enable(uint16_t dev)63*a2927e09SBin Meng static inline int pnp_read_enable(uint16_t dev)
64*a2927e09SBin Meng {
65*a2927e09SBin Meng return !!pnp_read_config(dev, PNP_IDX_EN);
66*a2927e09SBin Meng }
67*a2927e09SBin Meng
pnp_set_iobase(uint16_t dev,uint8_t index,uint16_t iobase)68*a2927e09SBin Meng static inline void pnp_set_iobase(uint16_t dev, uint8_t index, uint16_t iobase)
69*a2927e09SBin Meng {
70*a2927e09SBin Meng pnp_write_config(dev, index + 0, (iobase >> 8) & 0xff);
71*a2927e09SBin Meng pnp_write_config(dev, index + 1, iobase & 0xff);
72*a2927e09SBin Meng }
73*a2927e09SBin Meng
pnp_read_iobase(uint16_t dev,uint8_t index)74*a2927e09SBin Meng static inline uint16_t pnp_read_iobase(uint16_t dev, uint8_t index)
75*a2927e09SBin Meng {
76*a2927e09SBin Meng return ((uint16_t)(pnp_read_config(dev, index)) << 8) |
77*a2927e09SBin Meng pnp_read_config(dev, index + 1);
78*a2927e09SBin Meng }
79*a2927e09SBin Meng
pnp_set_irq(uint16_t dev,uint8_t index,unsigned irq)80*a2927e09SBin Meng static inline void pnp_set_irq(uint16_t dev, uint8_t index, unsigned irq)
81*a2927e09SBin Meng {
82*a2927e09SBin Meng pnp_write_config(dev, index, irq);
83*a2927e09SBin Meng }
84*a2927e09SBin Meng
pnp_set_drq(uint16_t dev,uint8_t index,unsigned drq)85*a2927e09SBin Meng static inline void pnp_set_drq(uint16_t dev, uint8_t index, unsigned drq)
86*a2927e09SBin Meng {
87*a2927e09SBin Meng pnp_write_config(dev, index, drq & 0xff);
88*a2927e09SBin Meng }
89*a2927e09SBin Meng
90*a2927e09SBin Meng #endif /* _ASM_PNP_DEF_H_ */
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