gic.h revision 7b626d93453903e36cbc0189f4cbf7b195e2c037
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 * GIC Register Definitions 9 * 10 */ 11#ifndef _ASM_GICREGS_H 12#define _ASM_GICREGS_H 13 14#include <linux/bitmap.h> 15#include <linux/threads.h> 16 17#include <irq.h> 18 19#undef GICISBYTELITTLEENDIAN 20 21/* Constants */ 22#define GIC_POL_POS 1 23#define GIC_POL_NEG 0 24#define GIC_TRIG_EDGE 1 25#define GIC_TRIG_LEVEL 0 26 27#define MSK(n) ((1 << (n)) - 1) 28#define REG32(addr) (*(volatile unsigned int *) (addr)) 29#define REG(base, offs) REG32((unsigned long)(base) + offs##_##OFS) 30#define REGP(base, phys) REG32((unsigned long)(base) + (phys)) 31 32/* Accessors */ 33#define GIC_REG(segment, offset) \ 34 REG32(_gic_base + segment##_##SECTION_OFS + offset##_##OFS) 35#define GIC_REG_ADDR(segment, offset) \ 36 REG32(_gic_base + segment##_##SECTION_OFS + offset) 37 38#define GIC_ABS_REG(segment, offset) \ 39 (_gic_base + segment##_##SECTION_OFS + offset##_##OFS) 40#define GIC_REG_ABS_ADDR(segment, offset) \ 41 (_gic_base + segment##_##SECTION_OFS + offset) 42 43#ifdef GICISBYTELITTLEENDIAN 44#define GICREAD(reg, data) ((data) = (reg), (data) = le32_to_cpu(data)) 45#define GICWRITE(reg, data) ((reg) = cpu_to_le32(data)) 46#else 47#define GICREAD(reg, data) ((data) = (reg)) 48#define GICWRITE(reg, data) ((reg) = (data)) 49#endif 50#define GICBIS(reg, mask, bits) \ 51 do { u32 data; \ 52 GICREAD(reg, data); \ 53 data &= ~(mask); \ 54 data |= ((bits) & (mask)); \ 55 GICWRITE((reg), data); \ 56 } while (0) 57 58 59/* GIC Address Space */ 60#define SHARED_SECTION_OFS 0x0000 61#define SHARED_SECTION_SIZE 0x8000 62#define VPE_LOCAL_SECTION_OFS 0x8000 63#define VPE_LOCAL_SECTION_SIZE 0x4000 64#define VPE_OTHER_SECTION_OFS 0xc000 65#define VPE_OTHER_SECTION_SIZE 0x4000 66#define USM_VISIBLE_SECTION_OFS 0x10000 67#define USM_VISIBLE_SECTION_SIZE 0x10000 68 69/* Register Map for Shared Section */ 70 71#define GIC_SH_CONFIG_OFS 0x0000 72 73/* Shared Global Counter */ 74#define GIC_SH_COUNTER_31_00_OFS 0x0010 75#define GIC_SH_COUNTER_63_32_OFS 0x0014 76#define GIC_SH_REVISIONID_OFS 0x0020 77 78/* Interrupt Polarity */ 79#define GIC_SH_POL_31_0_OFS 0x0100 80#define GIC_SH_POL_63_32_OFS 0x0104 81#define GIC_SH_POL_95_64_OFS 0x0108 82#define GIC_SH_POL_127_96_OFS 0x010c 83#define GIC_SH_POL_159_128_OFS 0x0110 84#define GIC_SH_POL_191_160_OFS 0x0114 85#define GIC_SH_POL_223_192_OFS 0x0118 86#define GIC_SH_POL_255_224_OFS 0x011c 87 88/* Edge/Level Triggering */ 89#define GIC_SH_TRIG_31_0_OFS 0x0180 90#define GIC_SH_TRIG_63_32_OFS 0x0184 91#define GIC_SH_TRIG_95_64_OFS 0x0188 92#define GIC_SH_TRIG_127_96_OFS 0x018c 93#define GIC_SH_TRIG_159_128_OFS 0x0190 94#define GIC_SH_TRIG_191_160_OFS 0x0194 95#define GIC_SH_TRIG_223_192_OFS 0x0198 96#define GIC_SH_TRIG_255_224_OFS 0x019c 97 98/* Dual Edge Triggering */ 99#define GIC_SH_DUAL_31_0_OFS 0x0200 100#define GIC_SH_DUAL_63_32_OFS 0x0204 101#define GIC_SH_DUAL_95_64_OFS 0x0208 102#define GIC_SH_DUAL_127_96_OFS 0x020c 103#define GIC_SH_DUAL_159_128_OFS 0x0210 104#define GIC_SH_DUAL_191_160_OFS 0x0214 105#define GIC_SH_DUAL_223_192_OFS 0x0218 106#define GIC_SH_DUAL_255_224_OFS 0x021c 107 108/* Set/Clear corresponding bit in Edge Detect Register */ 109#define GIC_SH_WEDGE_OFS 0x0280 110 111/* Reset Mask - Disables Interrupt */ 112#define GIC_SH_RMASK_31_0_OFS 0x0300 113#define GIC_SH_RMASK_63_32_OFS 0x0304 114#define GIC_SH_RMASK_95_64_OFS 0x0308 115#define GIC_SH_RMASK_127_96_OFS 0x030c 116#define GIC_SH_RMASK_159_128_OFS 0x0310 117#define GIC_SH_RMASK_191_160_OFS 0x0314 118#define GIC_SH_RMASK_223_192_OFS 0x0318 119#define GIC_SH_RMASK_255_224_OFS 0x031c 120 121/* Set Mask (WO) - Enables Interrupt */ 122#define GIC_SH_SMASK_31_0_OFS 0x0380 123#define GIC_SH_SMASK_63_32_OFS 0x0384 124#define GIC_SH_SMASK_95_64_OFS 0x0388 125#define GIC_SH_SMASK_127_96_OFS 0x038c 126#define GIC_SH_SMASK_159_128_OFS 0x0390 127#define GIC_SH_SMASK_191_160_OFS 0x0394 128#define GIC_SH_SMASK_223_192_OFS 0x0398 129#define GIC_SH_SMASK_255_224_OFS 0x039c 130 131/* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */ 132#define GIC_SH_MASK_31_0_OFS 0x0400 133#define GIC_SH_MASK_63_32_OFS 0x0404 134#define GIC_SH_MASK_95_64_OFS 0x0408 135#define GIC_SH_MASK_127_96_OFS 0x040c 136#define GIC_SH_MASK_159_128_OFS 0x0410 137#define GIC_SH_MASK_191_160_OFS 0x0414 138#define GIC_SH_MASK_223_192_OFS 0x0418 139#define GIC_SH_MASK_255_224_OFS 0x041c 140 141/* Pending Global Interrupts (RO) */ 142#define GIC_SH_PEND_31_0_OFS 0x0480 143#define GIC_SH_PEND_63_32_OFS 0x0484 144#define GIC_SH_PEND_95_64_OFS 0x0488 145#define GIC_SH_PEND_127_96_OFS 0x048c 146#define GIC_SH_PEND_159_128_OFS 0x0490 147#define GIC_SH_PEND_191_160_OFS 0x0494 148#define GIC_SH_PEND_223_192_OFS 0x0498 149#define GIC_SH_PEND_255_224_OFS 0x049c 150 151#define GIC_SH_INTR_MAP_TO_PIN_BASE_OFS 0x0500 152 153/* Maps Interrupt X to a Pin */ 154#define GIC_SH_MAP_TO_PIN(intr) \ 155 (GIC_SH_INTR_MAP_TO_PIN_BASE_OFS + (4 * intr)) 156 157#define GIC_SH_INTR_MAP_TO_VPE_BASE_OFS 0x2000 158 159/* Maps Interrupt X to a VPE */ 160#define GIC_SH_MAP_TO_VPE_REG_OFF(intr, vpe) \ 161 (GIC_SH_INTR_MAP_TO_VPE_BASE_OFS + (32 * (intr)) + (((vpe) / 32) * 4)) 162#define GIC_SH_MAP_TO_VPE_REG_BIT(vpe) (1 << ((vpe) % 32)) 163 164/* Convert an interrupt number to a byte offset/bit for multi-word registers */ 165#define GIC_INTR_OFS(intr) (((intr) / 32)*4) 166#define GIC_INTR_BIT(intr) ((intr) % 32) 167 168/* Polarity : Reset Value is always 0 */ 169#define GIC_SH_SET_POLARITY_OFS 0x0100 170#define GIC_SET_POLARITY(intr, pol) \ 171 GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_POLARITY_OFS + \ 172 GIC_INTR_OFS(intr)), (1 << GIC_INTR_BIT(intr)), \ 173 (pol) << GIC_INTR_BIT(intr)) 174 175/* Triggering : Reset Value is always 0 */ 176#define GIC_SH_SET_TRIGGER_OFS 0x0180 177#define GIC_SET_TRIGGER(intr, trig) \ 178 GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_TRIGGER_OFS + \ 179 GIC_INTR_OFS(intr)), (1 << GIC_INTR_BIT(intr)), \ 180 (trig) << GIC_INTR_BIT(intr)) 181 182/* Mask manipulation */ 183#define GIC_SH_SMASK_OFS 0x0380 184#define GIC_SET_INTR_MASK(intr) \ 185 GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_SMASK_OFS + \ 186 GIC_INTR_OFS(intr)), 1 << GIC_INTR_BIT(intr)) 187#define GIC_SH_RMASK_OFS 0x0300 188#define GIC_CLR_INTR_MASK(intr) \ 189 GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_RMASK_OFS + \ 190 GIC_INTR_OFS(intr)), 1 << GIC_INTR_BIT(intr)) 191 192/* Register Map for Local Section */ 193#define GIC_VPE_CTL_OFS 0x0000 194#define GIC_VPE_PEND_OFS 0x0004 195#define GIC_VPE_MASK_OFS 0x0008 196#define GIC_VPE_RMASK_OFS 0x000c 197#define GIC_VPE_SMASK_OFS 0x0010 198#define GIC_VPE_WD_MAP_OFS 0x0040 199#define GIC_VPE_COMPARE_MAP_OFS 0x0044 200#define GIC_VPE_TIMER_MAP_OFS 0x0048 201#define GIC_VPE_PERFCTR_MAP_OFS 0x0050 202#define GIC_VPE_SWINT0_MAP_OFS 0x0054 203#define GIC_VPE_SWINT1_MAP_OFS 0x0058 204#define GIC_VPE_OTHER_ADDR_OFS 0x0080 205#define GIC_VPE_WD_CONFIG0_OFS 0x0090 206#define GIC_VPE_WD_COUNT0_OFS 0x0094 207#define GIC_VPE_WD_INITIAL0_OFS 0x0098 208#define GIC_VPE_COMPARE_LO_OFS 0x00a0 209#define GIC_VPE_COMPARE_HI_OFS 0x00a4 210 211#define GIC_VPE_EIC_SHADOW_SET_BASE 0x0100 212#define GIC_VPE_EIC_SS(intr) \ 213 (GIC_VPE_EIC_SHADOW_SET_BASE + (4 * intr)) 214 215#define GIC_VPE_EIC_VEC_BASE 0x0800 216#define GIC_VPE_EIC_VEC(intr) \ 217 (GIC_VPE_EIC_VEC_BASE + (4 * intr)) 218 219#define GIC_VPE_TENABLE_NMI_OFS 0x1000 220#define GIC_VPE_TENABLE_YQ_OFS 0x1004 221#define GIC_VPE_TENABLE_INT_31_0_OFS 0x1080 222#define GIC_VPE_TENABLE_INT_63_32_OFS 0x1084 223 224/* User Mode Visible Section Register Map */ 225#define GIC_UMV_SH_COUNTER_31_00_OFS 0x0000 226#define GIC_UMV_SH_COUNTER_63_32_OFS 0x0004 227 228/* Masks */ 229#define GIC_SH_CONFIG_COUNTSTOP_SHF 28 230#define GIC_SH_CONFIG_COUNTSTOP_MSK (MSK(1) << GIC_SH_CONFIG_COUNTSTOP_SHF) 231 232#define GIC_SH_CONFIG_COUNTBITS_SHF 24 233#define GIC_SH_CONFIG_COUNTBITS_MSK (MSK(4) << GIC_SH_CONFIG_COUNTBITS_SHF) 234 235#define GIC_SH_CONFIG_NUMINTRS_SHF 16 236#define GIC_SH_CONFIG_NUMINTRS_MSK (MSK(8) << GIC_SH_CONFIG_NUMINTRS_SHF) 237 238#define GIC_SH_CONFIG_NUMVPES_SHF 0 239#define GIC_SH_CONFIG_NUMVPES_MSK (MSK(8) << GIC_SH_CONFIG_NUMVPES_SHF) 240 241#define GIC_SH_WEDGE_SET(intr) (intr | (0x1 << 31)) 242#define GIC_SH_WEDGE_CLR(intr) (intr & ~(0x1 << 31)) 243 244#define GIC_MAP_TO_PIN_SHF 31 245#define GIC_MAP_TO_PIN_MSK (MSK(1) << GIC_MAP_TO_PIN_SHF) 246#define GIC_MAP_TO_NMI_SHF 30 247#define GIC_MAP_TO_NMI_MSK (MSK(1) << GIC_MAP_TO_NMI_SHF) 248#define GIC_MAP_TO_YQ_SHF 29 249#define GIC_MAP_TO_YQ_MSK (MSK(1) << GIC_MAP_TO_YQ_SHF) 250#define GIC_MAP_SHF 0 251#define GIC_MAP_MSK (MSK(6) << GIC_MAP_SHF) 252 253/* GIC_VPE_CTL Masks */ 254#define GIC_VPE_CTL_PERFCNT_RTBL_SHF 2 255#define GIC_VPE_CTL_PERFCNT_RTBL_MSK (MSK(1) << GIC_VPE_CTL_PERFCNT_RTBL_SHF) 256#define GIC_VPE_CTL_TIMER_RTBL_SHF 1 257#define GIC_VPE_CTL_TIMER_RTBL_MSK (MSK(1) << GIC_VPE_CTL_TIMER_RTBL_SHF) 258#define GIC_VPE_CTL_EIC_MODE_SHF 0 259#define GIC_VPE_CTL_EIC_MODE_MSK (MSK(1) << GIC_VPE_CTL_EIC_MODE_SHF) 260 261/* GIC_VPE_PEND Masks */ 262#define GIC_VPE_PEND_WD_SHF 0 263#define GIC_VPE_PEND_WD_MSK (MSK(1) << GIC_VPE_PEND_WD_SHF) 264#define GIC_VPE_PEND_CMP_SHF 1 265#define GIC_VPE_PEND_CMP_MSK (MSK(1) << GIC_VPE_PEND_CMP_SHF) 266#define GIC_VPE_PEND_TIMER_SHF 2 267#define GIC_VPE_PEND_TIMER_MSK (MSK(1) << GIC_VPE_PEND_TIMER_SHF) 268#define GIC_VPE_PEND_PERFCOUNT_SHF 3 269#define GIC_VPE_PEND_PERFCOUNT_MSK (MSK(1) << GIC_VPE_PEND_PERFCOUNT_SHF) 270#define GIC_VPE_PEND_SWINT0_SHF 4 271#define GIC_VPE_PEND_SWINT0_MSK (MSK(1) << GIC_VPE_PEND_SWINT0_SHF) 272#define GIC_VPE_PEND_SWINT1_SHF 5 273#define GIC_VPE_PEND_SWINT1_MSK (MSK(1) << GIC_VPE_PEND_SWINT1_SHF) 274 275/* GIC_VPE_RMASK Masks */ 276#define GIC_VPE_RMASK_WD_SHF 0 277#define GIC_VPE_RMASK_WD_MSK (MSK(1) << GIC_VPE_RMASK_WD_SHF) 278#define GIC_VPE_RMASK_CMP_SHF 1 279#define GIC_VPE_RMASK_CMP_MSK (MSK(1) << GIC_VPE_RMASK_CMP_SHF) 280#define GIC_VPE_RMASK_TIMER_SHF 2 281#define GIC_VPE_RMASK_TIMER_MSK (MSK(1) << GIC_VPE_RMASK_TIMER_SHF) 282#define GIC_VPE_RMASK_PERFCNT_SHF 3 283#define GIC_VPE_RMASK_PERFCNT_MSK (MSK(1) << GIC_VPE_RMASK_PERFCNT_SHF) 284#define GIC_VPE_RMASK_SWINT0_SHF 4 285#define GIC_VPE_RMASK_SWINT0_MSK (MSK(1) << GIC_VPE_RMASK_SWINT0_SHF) 286#define GIC_VPE_RMASK_SWINT1_SHF 5 287#define GIC_VPE_RMASK_SWINT1_MSK (MSK(1) << GIC_VPE_RMASK_SWINT1_SHF) 288 289/* GIC_VPE_SMASK Masks */ 290#define GIC_VPE_SMASK_WD_SHF 0 291#define GIC_VPE_SMASK_WD_MSK (MSK(1) << GIC_VPE_SMASK_WD_SHF) 292#define GIC_VPE_SMASK_CMP_SHF 1 293#define GIC_VPE_SMASK_CMP_MSK (MSK(1) << GIC_VPE_SMASK_CMP_SHF) 294#define GIC_VPE_SMASK_TIMER_SHF 2 295#define GIC_VPE_SMASK_TIMER_MSK (MSK(1) << GIC_VPE_SMASK_TIMER_SHF) 296#define GIC_VPE_SMASK_PERFCNT_SHF 3 297#define GIC_VPE_SMASK_PERFCNT_MSK (MSK(1) << GIC_VPE_SMASK_PERFCNT_SHF) 298#define GIC_VPE_SMASK_SWINT0_SHF 4 299#define GIC_VPE_SMASK_SWINT0_MSK (MSK(1) << GIC_VPE_SMASK_SWINT0_SHF) 300#define GIC_VPE_SMASK_SWINT1_SHF 5 301#define GIC_VPE_SMASK_SWINT1_MSK (MSK(1) << GIC_VPE_SMASK_SWINT1_SHF) 302 303/* 304 * Set the Mapping of Interrupt X to a VPE. 305 */ 306#define GIC_SH_MAP_TO_VPE_SMASK(intr, vpe) \ 307 GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_MAP_TO_VPE_REG_OFF(intr, vpe)), \ 308 GIC_SH_MAP_TO_VPE_REG_BIT(vpe)) 309 310/* 311 * Interrupt Meta-data specification. The ipiflag helps 312 * in building ipi_map. 313 */ 314struct gic_intr_map { 315 unsigned int cpunum; /* Directed to this CPU */ 316#define GIC_UNUSED 0xdead /* Dummy data */ 317 unsigned int pin; /* Directed to this Pin */ 318 unsigned int polarity; /* Polarity : +/- */ 319 unsigned int trigtype; /* Trigger : Edge/Levl */ 320 unsigned int flags; /* Misc flags */ 321#define GIC_FLAG_TRANSPARENT 0x01 322}; 323 324/* 325 * This is only used in EIC mode. This helps to figure out which 326 * shared interrupts we need to process when we get a vector interrupt. 327 */ 328#define GIC_MAX_SHARED_INTR 0x5 329struct gic_shared_intr_map { 330 unsigned int num_shared_intr; 331 unsigned int intr_list[GIC_MAX_SHARED_INTR]; 332 unsigned int local_intr_mask; 333}; 334 335/* GIC nomenclature for Core Interrupt Pins. */ 336#define GIC_CPU_INT0 0 /* Core Interrupt 2 */ 337#define GIC_CPU_INT1 1 /* . */ 338#define GIC_CPU_INT2 2 /* . */ 339#define GIC_CPU_INT3 3 /* . */ 340#define GIC_CPU_INT4 4 /* . */ 341#define GIC_CPU_INT5 5 /* Core Interrupt 7 */ 342 343/* Local GIC interrupts. */ 344#define GIC_INT_TMR (GIC_CPU_INT5) 345#define GIC_INT_PERFCTR (GIC_CPU_INT5) 346 347/* Add 2 to convert non-EIC hardware interrupt to EIC vector number. */ 348#define GIC_CPU_TO_VEC_OFFSET (2) 349 350/* Mapped interrupt to pin X, then GIC will generate the vector (X+1). */ 351#define GIC_PIN_TO_VEC_OFFSET (1) 352 353#include <linux/clocksource.h> 354#include <linux/irq.h> 355 356extern unsigned int gic_present; 357extern unsigned int gic_frequency; 358extern unsigned long _gic_base; 359extern unsigned int gic_irq_base; 360extern unsigned int gic_irq_flags[]; 361extern struct gic_shared_intr_map gic_shared_intr_map[]; 362 363extern void gic_init(unsigned long gic_base_addr, 364 unsigned long gic_addrspace_size, struct gic_intr_map *intrmap, 365 unsigned int intrmap_size, unsigned int irqbase); 366extern void gic_clocksource_init(unsigned int); 367extern unsigned int gic_compare_int (void); 368extern cycle_t gic_read_count(void); 369extern cycle_t gic_read_compare(void); 370extern void gic_write_compare(cycle_t cnt); 371extern void gic_write_cpu_compare(cycle_t cnt, int cpu); 372extern void gic_send_ipi(unsigned int intr); 373extern unsigned int plat_ipi_call_int_xlate(unsigned int); 374extern unsigned int plat_ipi_resched_int_xlate(unsigned int); 375extern void gic_bind_eic_interrupt(int irq, int set); 376extern unsigned int gic_get_timer_pending(void); 377extern void gic_get_int_mask(unsigned long *dst, const unsigned long *src); 378extern unsigned int gic_get_int(void); 379extern void gic_enable_interrupt(int irq_vec); 380extern void gic_disable_interrupt(int irq_vec); 381extern void gic_irq_ack(struct irq_data *d); 382extern void gic_finish_irq(struct irq_data *d); 383extern void gic_platform_init(int irqs, struct irq_chip *irq_controller); 384#endif /* _ASM_GICREGS_H */ 385