1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * include/asm-mips/vr41xx/vr41xx.h
4 *
5 * Include file for NEC VR4100 series.
6 *
7 * Copyright (C) 1999 Michael Klar
8 * Copyright (C) 2001, 2002 Paul Mundt
9 * Copyright (C) 2002 MontaVista Software, Inc.
10 * Copyright (C) 2002 TimeSys Corp.
11 * Copyright (C) 2003-2008 Yoichi Yuasa <yuasa@linux-mips.org>
12 */
13 #ifndef __NEC_VR41XX_H
14 #define __NEC_VR41XX_H
15
16 #include <linux/interrupt.h>
17
18 /*
19 * CPU Revision
20 */
21 /* VR4122 0x00000c70-0x00000c72 */
22 #define PRID_VR4122_REV1_0 0x00000c70
23 #define PRID_VR4122_REV2_0 0x00000c70
24 #define PRID_VR4122_REV2_1 0x00000c70
25 #define PRID_VR4122_REV3_0 0x00000c71
26 #define PRID_VR4122_REV3_1 0x00000c72
27
28 /* VR4181A 0x00000c73-0x00000c7f */
29 #define PRID_VR4181A_REV1_0 0x00000c73
30 #define PRID_VR4181A_REV1_1 0x00000c74
31
32 /* VR4131 0x00000c80-0x00000c83 */
33 #define PRID_VR4131_REV1_2 0x00000c80
34 #define PRID_VR4131_REV2_0 0x00000c81
35 #define PRID_VR4131_REV2_1 0x00000c82
36 #define PRID_VR4131_REV2_2 0x00000c83
37
38 /* VR4133 0x00000c84- */
39 #define PRID_VR4133 0x00000c84
40
41 /*
42 * Bus Control Uint
43 */
44 extern unsigned long vr41xx_calculate_clock_frequency(void);
45 extern unsigned long vr41xx_get_vtclock_frequency(void);
46 extern unsigned long vr41xx_get_tclock_frequency(void);
47
48 /*
49 * Clock Mask Unit
50 */
51 typedef enum {
52 PIU_CLOCK,
53 SIU_CLOCK,
54 AIU_CLOCK,
55 KIU_CLOCK,
56 FIR_CLOCK,
57 DSIU_CLOCK,
58 CSI_CLOCK,
59 PCIU_CLOCK,
60 HSP_CLOCK,
61 PCI_CLOCK,
62 CEU_CLOCK,
63 ETHER0_CLOCK,
64 ETHER1_CLOCK
65 } vr41xx_clock_t;
66
67 extern void vr41xx_supply_clock(vr41xx_clock_t clock);
68 extern void vr41xx_mask_clock(vr41xx_clock_t clock);
69
70 /*
71 * Interrupt Control Unit
72 */
73 extern int vr41xx_set_intassign(unsigned int irq, unsigned char intassign);
74 extern int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int));
75
76 #define PIUINT_COMMAND 0x0040
77 #define PIUINT_DATA 0x0020
78 #define PIUINT_PAGE1 0x0010
79 #define PIUINT_PAGE0 0x0008
80 #define PIUINT_DATALOST 0x0004
81 #define PIUINT_STATUSCHANGE 0x0001
82
83 extern void vr41xx_enable_piuint(uint16_t mask);
84 extern void vr41xx_disable_piuint(uint16_t mask);
85
86 #define AIUINT_INPUT_DMAEND 0x0800
87 #define AIUINT_INPUT_DMAHALT 0x0400
88 #define AIUINT_INPUT_DATALOST 0x0200
89 #define AIUINT_INPUT_DATA 0x0100
90 #define AIUINT_OUTPUT_DMAEND 0x0008
91 #define AIUINT_OUTPUT_DMAHALT 0x0004
92 #define AIUINT_OUTPUT_NODATA 0x0002
93
94 extern void vr41xx_enable_aiuint(uint16_t mask);
95 extern void vr41xx_disable_aiuint(uint16_t mask);
96
97 #define KIUINT_DATALOST 0x0004
98 #define KIUINT_DATAREADY 0x0002
99 #define KIUINT_SCAN 0x0001
100
101 extern void vr41xx_enable_kiuint(uint16_t mask);
102 extern void vr41xx_disable_kiuint(uint16_t mask);
103
104 #define DSIUINT_CTS 0x0800
105 #define DSIUINT_RXERR 0x0400
106 #define DSIUINT_RX 0x0200
107 #define DSIUINT_TX 0x0100
108 #define DSIUINT_ALL 0x0f00
109
110 extern void vr41xx_enable_dsiuint(uint16_t mask);
111 extern void vr41xx_disable_dsiuint(uint16_t mask);
112
113 #define FIRINT_UNIT 0x0010
114 #define FIRINT_RX_DMAEND 0x0008
115 #define FIRINT_RX_DMAHALT 0x0004
116 #define FIRINT_TX_DMAEND 0x0002
117 #define FIRINT_TX_DMAHALT 0x0001
118
119 extern void vr41xx_enable_firint(uint16_t mask);
120 extern void vr41xx_disable_firint(uint16_t mask);
121
122 extern void vr41xx_enable_pciint(void);
123 extern void vr41xx_disable_pciint(void);
124
125 extern void vr41xx_enable_scuint(void);
126 extern void vr41xx_disable_scuint(void);
127
128 #define CSIINT_TX_DMAEND 0x0040
129 #define CSIINT_TX_DMAHALT 0x0020
130 #define CSIINT_TX_DATA 0x0010
131 #define CSIINT_TX_FIFOEMPTY 0x0008
132 #define CSIINT_RX_DMAEND 0x0004
133 #define CSIINT_RX_DMAHALT 0x0002
134 #define CSIINT_RX_FIFOEMPTY 0x0001
135
136 extern void vr41xx_enable_csiint(uint16_t mask);
137 extern void vr41xx_disable_csiint(uint16_t mask);
138
139 extern void vr41xx_enable_bcuint(void);
140 extern void vr41xx_disable_bcuint(void);
141
142 #ifdef CONFIG_SERIAL_VR41XX_CONSOLE
143 extern void vr41xx_siu_setup(void);
144 #else
vr41xx_siu_setup(void)145 static inline void vr41xx_siu_setup(void) {}
146 #endif
147
148 #endif /* __NEC_VR41XX_H */
149