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-rw-r--r--include/linux/irqchip/mips-gic.h249
1 files changed, 249 insertions, 0 deletions
diff --git a/include/linux/irqchip/mips-gic.h b/include/linux/irqchip/mips-gic.h
new file mode 100644
index 000000000000..420f77b34d02
--- /dev/null
+++ b/include/linux/irqchip/mips-gic.h
@@ -0,0 +1,249 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2000, 07 MIPS Technologies, Inc.
7 */
8#ifndef __LINUX_IRQCHIP_MIPS_GIC_H
9#define __LINUX_IRQCHIP_MIPS_GIC_H
10
11#include <linux/clocksource.h>
12
13#define GIC_MAX_INTRS 256
14
15/* Constants */
16#define GIC_POL_POS 1
17#define GIC_POL_NEG 0
18#define GIC_TRIG_EDGE 1
19#define GIC_TRIG_LEVEL 0
20#define GIC_TRIG_DUAL_ENABLE 1
21#define GIC_TRIG_DUAL_DISABLE 0
22
23#define MSK(n) ((1 << (n)) - 1)
24
25/* Accessors */
26#define GIC_REG(segment, offset) (segment##_##SECTION_OFS + offset##_##OFS)
27
28/* GIC Address Space */
29#define SHARED_SECTION_OFS 0x0000
30#define SHARED_SECTION_SIZE 0x8000
31#define VPE_LOCAL_SECTION_OFS 0x8000
32#define VPE_LOCAL_SECTION_SIZE 0x4000
33#define VPE_OTHER_SECTION_OFS 0xc000
34#define VPE_OTHER_SECTION_SIZE 0x4000
35#define USM_VISIBLE_SECTION_OFS 0x10000
36#define USM_VISIBLE_SECTION_SIZE 0x10000
37
38/* Register Map for Shared Section */
39
40#define GIC_SH_CONFIG_OFS 0x0000
41
42/* Shared Global Counter */
43#define GIC_SH_COUNTER_31_00_OFS 0x0010
44#define GIC_SH_COUNTER_63_32_OFS 0x0014
45#define GIC_SH_REVISIONID_OFS 0x0020
46
47/* Convert an interrupt number to a byte offset/bit for multi-word registers */
48#define GIC_INTR_OFS(intr) (((intr) / 32) * 4)
49#define GIC_INTR_BIT(intr) ((intr) % 32)
50
51/* Polarity : Reset Value is always 0 */
52#define GIC_SH_SET_POLARITY_OFS 0x0100
53
54/* Triggering : Reset Value is always 0 */
55#define GIC_SH_SET_TRIGGER_OFS 0x0180
56
57/* Dual edge triggering : Reset Value is always 0 */
58#define GIC_SH_SET_DUAL_OFS 0x0200
59
60/* Set/Clear corresponding bit in Edge Detect Register */
61#define GIC_SH_WEDGE_OFS 0x0280
62
63/* Mask manipulation */
64#define GIC_SH_RMASK_OFS 0x0300
65#define GIC_SH_SMASK_OFS 0x0380
66
67/* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */
68#define GIC_SH_MASK_OFS 0x0400
69
70/* Pending Global Interrupts (RO) */
71#define GIC_SH_PEND_OFS 0x0480
72
73/* Maps Interrupt X to a Pin */
74#define GIC_SH_INTR_MAP_TO_PIN_BASE_OFS 0x0500
75#define GIC_SH_MAP_TO_PIN(intr) (4 * (intr))
76
77/* Maps Interrupt X to a VPE */
78#define GIC_SH_INTR_MAP_TO_VPE_BASE_OFS 0x2000
79#define GIC_SH_MAP_TO_VPE_REG_OFF(intr, vpe) \
80 ((32 * (intr)) + (((vpe) / 32) * 4))
81#define GIC_SH_MAP_TO_VPE_REG_BIT(vpe) (1 << ((vpe) % 32))
82
83/* Register Map for Local Section */
84#define GIC_VPE_CTL_OFS 0x0000
85#define GIC_VPE_PEND_OFS 0x0004
86#define GIC_VPE_MASK_OFS 0x0008
87#define GIC_VPE_RMASK_OFS 0x000c
88#define GIC_VPE_SMASK_OFS 0x0010
89#define GIC_VPE_WD_MAP_OFS 0x0040
90#define GIC_VPE_COMPARE_MAP_OFS 0x0044
91#define GIC_VPE_TIMER_MAP_OFS 0x0048
92#define GIC_VPE_FDC_MAP_OFS 0x004c
93#define GIC_VPE_PERFCTR_MAP_OFS 0x0050
94#define GIC_VPE_SWINT0_MAP_OFS 0x0054
95#define GIC_VPE_SWINT1_MAP_OFS 0x0058
96#define GIC_VPE_OTHER_ADDR_OFS 0x0080
97#define GIC_VPE_WD_CONFIG0_OFS 0x0090
98#define GIC_VPE_WD_COUNT0_OFS 0x0094
99#define GIC_VPE_WD_INITIAL0_OFS 0x0098
100#define GIC_VPE_COMPARE_LO_OFS 0x00a0
101#define GIC_VPE_COMPARE_HI_OFS 0x00a4
102
103#define GIC_VPE_EIC_SHADOW_SET_BASE_OFS 0x0100
104#define GIC_VPE_EIC_SS(intr) (4 * (intr))
105
106#define GIC_VPE_EIC_VEC_BASE_OFS 0x0800
107#define GIC_VPE_EIC_VEC(intr) (4 * (intr))
108
109#define GIC_VPE_TENABLE_NMI_OFS 0x1000
110#define GIC_VPE_TENABLE_YQ_OFS 0x1004
111#define GIC_VPE_TENABLE_INT_31_0_OFS 0x1080
112#define GIC_VPE_TENABLE_INT_63_32_OFS 0x1084
113
114/* User Mode Visible Section Register Map */
115#define GIC_UMV_SH_COUNTER_31_00_OFS 0x0000
116#define GIC_UMV_SH_COUNTER_63_32_OFS 0x0004
117
118/* Masks */
119#define GIC_SH_CONFIG_COUNTSTOP_SHF 28
120#define GIC_SH_CONFIG_COUNTSTOP_MSK (MSK(1) << GIC_SH_CONFIG_COUNTSTOP_SHF)
121
122#define GIC_SH_CONFIG_COUNTBITS_SHF 24
123#define GIC_SH_CONFIG_COUNTBITS_MSK (MSK(4) << GIC_SH_CONFIG_COUNTBITS_SHF)
124
125#define GIC_SH_CONFIG_NUMINTRS_SHF 16
126#define GIC_SH_CONFIG_NUMINTRS_MSK (MSK(8) << GIC_SH_CONFIG_NUMINTRS_SHF)
127
128#define GIC_SH_CONFIG_NUMVPES_SHF 0
129#define GIC_SH_CONFIG_NUMVPES_MSK (MSK(8) << GIC_SH_CONFIG_NUMVPES_SHF)
130
131#define GIC_SH_WEDGE_SET(intr) ((intr) | (0x1 << 31))
132#define GIC_SH_WEDGE_CLR(intr) ((intr) & ~(0x1 << 31))
133
134#define GIC_MAP_TO_PIN_SHF 31
135#define GIC_MAP_TO_PIN_MSK (MSK(1) << GIC_MAP_TO_PIN_SHF)
136#define GIC_MAP_TO_NMI_SHF 30
137#define GIC_MAP_TO_NMI_MSK (MSK(1) << GIC_MAP_TO_NMI_SHF)
138#define GIC_MAP_TO_YQ_SHF 29
139#define GIC_MAP_TO_YQ_MSK (MSK(1) << GIC_MAP_TO_YQ_SHF)
140#define GIC_MAP_SHF 0
141#define GIC_MAP_MSK (MSK(6) << GIC_MAP_SHF)
142
143/* GIC_VPE_CTL Masks */
144#define GIC_VPE_CTL_FDC_RTBL_SHF 4
145#define GIC_VPE_CTL_FDC_RTBL_MSK (MSK(1) << GIC_VPE_CTL_FDC_RTBL_SHF)
146#define GIC_VPE_CTL_SWINT_RTBL_SHF 3
147#define GIC_VPE_CTL_SWINT_RTBL_MSK (MSK(1) << GIC_VPE_CTL_SWINT_RTBL_SHF)
148#define GIC_VPE_CTL_PERFCNT_RTBL_SHF 2
149#define GIC_VPE_CTL_PERFCNT_RTBL_MSK (MSK(1) << GIC_VPE_CTL_PERFCNT_RTBL_SHF)
150#define GIC_VPE_CTL_TIMER_RTBL_SHF 1
151#define GIC_VPE_CTL_TIMER_RTBL_MSK (MSK(1) << GIC_VPE_CTL_TIMER_RTBL_SHF)
152#define GIC_VPE_CTL_EIC_MODE_SHF 0
153#define GIC_VPE_CTL_EIC_MODE_MSK (MSK(1) << GIC_VPE_CTL_EIC_MODE_SHF)
154
155/* GIC_VPE_PEND Masks */
156#define GIC_VPE_PEND_WD_SHF 0
157#define GIC_VPE_PEND_WD_MSK (MSK(1) << GIC_VPE_PEND_WD_SHF)
158#define GIC_VPE_PEND_CMP_SHF 1
159#define GIC_VPE_PEND_CMP_MSK (MSK(1) << GIC_VPE_PEND_CMP_SHF)
160#define GIC_VPE_PEND_TIMER_SHF 2
161#define GIC_VPE_PEND_TIMER_MSK (MSK(1) << GIC_VPE_PEND_TIMER_SHF)
162#define GIC_VPE_PEND_PERFCOUNT_SHF 3
163#define GIC_VPE_PEND_PERFCOUNT_MSK (MSK(1) << GIC_VPE_PEND_PERFCOUNT_SHF)
164#define GIC_VPE_PEND_SWINT0_SHF 4
165#define GIC_VPE_PEND_SWINT0_MSK (MSK(1) << GIC_VPE_PEND_SWINT0_SHF)
166#define GIC_VPE_PEND_SWINT1_SHF 5
167#define GIC_VPE_PEND_SWINT1_MSK (MSK(1) << GIC_VPE_PEND_SWINT1_SHF)
168
169/* GIC_VPE_RMASK Masks */
170#define GIC_VPE_RMASK_WD_SHF 0
171#define GIC_VPE_RMASK_WD_MSK (MSK(1) << GIC_VPE_RMASK_WD_SHF)
172#define GIC_VPE_RMASK_CMP_SHF 1
173#define GIC_VPE_RMASK_CMP_MSK (MSK(1) << GIC_VPE_RMASK_CMP_SHF)
174#define GIC_VPE_RMASK_TIMER_SHF 2
175#define GIC_VPE_RMASK_TIMER_MSK (MSK(1) << GIC_VPE_RMASK_TIMER_SHF)
176#define GIC_VPE_RMASK_PERFCNT_SHF 3
177#define GIC_VPE_RMASK_PERFCNT_MSK (MSK(1) << GIC_VPE_RMASK_PERFCNT_SHF)
178#define GIC_VPE_RMASK_SWINT0_SHF 4
179#define GIC_VPE_RMASK_SWINT0_MSK (MSK(1) << GIC_VPE_RMASK_SWINT0_SHF)
180#define GIC_VPE_RMASK_SWINT1_SHF 5
181#define GIC_VPE_RMASK_SWINT1_MSK (MSK(1) << GIC_VPE_RMASK_SWINT1_SHF)
182
183/* GIC_VPE_SMASK Masks */
184#define GIC_VPE_SMASK_WD_SHF 0
185#define GIC_VPE_SMASK_WD_MSK (MSK(1) << GIC_VPE_SMASK_WD_SHF)
186#define GIC_VPE_SMASK_CMP_SHF 1
187#define GIC_VPE_SMASK_CMP_MSK (MSK(1) << GIC_VPE_SMASK_CMP_SHF)
188#define GIC_VPE_SMASK_TIMER_SHF 2
189#define GIC_VPE_SMASK_TIMER_MSK (MSK(1) << GIC_VPE_SMASK_TIMER_SHF)
190#define GIC_VPE_SMASK_PERFCNT_SHF 3
191#define GIC_VPE_SMASK_PERFCNT_MSK (MSK(1) << GIC_VPE_SMASK_PERFCNT_SHF)
192#define GIC_VPE_SMASK_SWINT0_SHF 4
193#define GIC_VPE_SMASK_SWINT0_MSK (MSK(1) << GIC_VPE_SMASK_SWINT0_SHF)
194#define GIC_VPE_SMASK_SWINT1_SHF 5
195#define GIC_VPE_SMASK_SWINT1_MSK (MSK(1) << GIC_VPE_SMASK_SWINT1_SHF)
196
197/* GIC nomenclature for Core Interrupt Pins. */
198#define GIC_CPU_INT0 0 /* Core Interrupt 2 */
199#define GIC_CPU_INT1 1 /* . */
200#define GIC_CPU_INT2 2 /* . */
201#define GIC_CPU_INT3 3 /* . */
202#define GIC_CPU_INT4 4 /* . */
203#define GIC_CPU_INT5 5 /* Core Interrupt 7 */
204
205/* Add 2 to convert GIC CPU pin to core interrupt */
206#define GIC_CPU_PIN_OFFSET 2
207
208/* Add 2 to convert non-EIC hardware interrupt to EIC vector number. */
209#define GIC_CPU_TO_VEC_OFFSET 2
210
211/* Mapped interrupt to pin X, then GIC will generate the vector (X+1). */
212#define GIC_PIN_TO_VEC_OFFSET 1
213
214/* Local GIC interrupts. */
215#define GIC_LOCAL_INT_WD 0 /* GIC watchdog */
216#define GIC_LOCAL_INT_COMPARE 1 /* GIC count and compare timer */
217#define GIC_LOCAL_INT_TIMER 2 /* CPU timer interrupt */
218#define GIC_LOCAL_INT_PERFCTR 3 /* CPU performance counter */
219#define GIC_LOCAL_INT_SWINT0 4 /* CPU software interrupt 0 */
220#define GIC_LOCAL_INT_SWINT1 5 /* CPU software interrupt 1 */
221#define GIC_LOCAL_INT_FDC 6 /* CPU fast debug channel */
222#define GIC_NUM_LOCAL_INTRS 7
223
224/* Convert between local/shared IRQ number and GIC HW IRQ number. */
225#define GIC_LOCAL_HWIRQ_BASE 0
226#define GIC_LOCAL_TO_HWIRQ(x) (GIC_LOCAL_HWIRQ_BASE + (x))
227#define GIC_HWIRQ_TO_LOCAL(x) ((x) - GIC_LOCAL_HWIRQ_BASE)
228#define GIC_SHARED_HWIRQ_BASE GIC_NUM_LOCAL_INTRS
229#define GIC_SHARED_TO_HWIRQ(x) (GIC_SHARED_HWIRQ_BASE + (x))
230#define GIC_HWIRQ_TO_SHARED(x) ((x) - GIC_SHARED_HWIRQ_BASE)
231
232extern unsigned int gic_present;
233
234extern void gic_init(unsigned long gic_base_addr,
235 unsigned long gic_addrspace_size, unsigned int cpu_vec,
236 unsigned int irqbase);
237extern void gic_clocksource_init(unsigned int);
238extern cycle_t gic_read_count(void);
239extern unsigned int gic_get_count_width(void);
240extern cycle_t gic_read_compare(void);
241extern void gic_write_compare(cycle_t cnt);
242extern void gic_write_cpu_compare(cycle_t cnt, int cpu);
243extern void gic_send_ipi(unsigned int intr);
244extern unsigned int plat_ipi_call_int_xlate(unsigned int);
245extern unsigned int plat_ipi_resched_int_xlate(unsigned int);
246extern unsigned int gic_get_timer_pending(void);
247extern int gic_get_c0_compare_int(void);
248extern int gic_get_c0_perfcount_int(void);
249#endif /* __LINUX_IRQCHIP_MIPS_GIC_H */
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