David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 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 | * |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 6 | * Copyright (C) 2004-2012 Cavium, Inc. |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 7 | */ |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 8 | |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 9 | #include <linux/interrupt.h> |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 10 | #include <linux/irqdomain.h> |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 11 | #include <linux/bitops.h> |
| 12 | #include <linux/percpu.h> |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 13 | #include <linux/slab.h> |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 14 | #include <linux/irq.h> |
Ralf Baechle | 631330f | 2009-06-19 14:05:26 +0100 | [diff] [blame] | 15 | #include <linux/smp.h> |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 16 | #include <linux/of.h> |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 17 | |
| 18 | #include <asm/octeon/octeon.h> |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 19 | #include <asm/octeon/cvmx-ciu2-defs.h> |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 20 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 21 | static DEFINE_PER_CPU(unsigned long, octeon_irq_ciu0_en_mirror); |
| 22 | static DEFINE_PER_CPU(unsigned long, octeon_irq_ciu1_en_mirror); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 23 | static DEFINE_PER_CPU(raw_spinlock_t, octeon_irq_ciu_spinlock); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 24 | |
| 25 | static __read_mostly u8 octeon_irq_ciu_to_irq[8][64]; |
| 26 | |
| 27 | union octeon_ciu_chip_data { |
| 28 | void *p; |
| 29 | unsigned long l; |
| 30 | struct { |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 31 | unsigned long line:6; |
| 32 | unsigned long bit:6; |
| 33 | unsigned long gpio_line:6; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 34 | } s; |
| 35 | }; |
| 36 | |
| 37 | struct octeon_core_chip_data { |
| 38 | struct mutex core_irq_mutex; |
| 39 | bool current_en; |
| 40 | bool desired_en; |
| 41 | u8 bit; |
| 42 | }; |
| 43 | |
| 44 | #define MIPS_CORE_IRQ_LINES 8 |
| 45 | |
| 46 | static struct octeon_core_chip_data octeon_irq_core_chip_data[MIPS_CORE_IRQ_LINES]; |
| 47 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 48 | static void octeon_irq_set_ciu_mapping(int irq, int line, int bit, int gpio_line, |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 49 | struct irq_chip *chip, |
| 50 | irq_flow_handler_t handler) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 51 | { |
| 52 | union octeon_ciu_chip_data cd; |
| 53 | |
| 54 | irq_set_chip_and_handler(irq, chip, handler); |
| 55 | |
| 56 | cd.l = 0; |
| 57 | cd.s.line = line; |
| 58 | cd.s.bit = bit; |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 59 | cd.s.gpio_line = gpio_line; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 60 | |
| 61 | irq_set_chip_data(irq, cd.p); |
| 62 | octeon_irq_ciu_to_irq[line][bit] = irq; |
| 63 | } |
| 64 | |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 65 | static void octeon_irq_force_ciu_mapping(struct irq_domain *domain, |
| 66 | int irq, int line, int bit) |
| 67 | { |
| 68 | irq_domain_associate(domain, irq, line << 6 | bit); |
| 69 | } |
| 70 | |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 71 | static int octeon_coreid_for_cpu(int cpu) |
| 72 | { |
| 73 | #ifdef CONFIG_SMP |
| 74 | return cpu_logical_map(cpu); |
| 75 | #else |
| 76 | return cvmx_get_core_num(); |
| 77 | #endif |
| 78 | } |
| 79 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 80 | static int octeon_cpu_for_coreid(int coreid) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 81 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 82 | #ifdef CONFIG_SMP |
| 83 | return cpu_number_map(coreid); |
| 84 | #else |
| 85 | return smp_processor_id(); |
| 86 | #endif |
| 87 | } |
| 88 | |
| 89 | static void octeon_irq_core_ack(struct irq_data *data) |
| 90 | { |
| 91 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
| 92 | unsigned int bit = cd->bit; |
| 93 | |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 94 | /* |
| 95 | * We don't need to disable IRQs to make these atomic since |
| 96 | * they are already disabled earlier in the low level |
| 97 | * interrupt code. |
| 98 | */ |
| 99 | clear_c0_status(0x100 << bit); |
| 100 | /* The two user interrupts must be cleared manually. */ |
| 101 | if (bit < 2) |
| 102 | clear_c0_cause(0x100 << bit); |
| 103 | } |
| 104 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 105 | static void octeon_irq_core_eoi(struct irq_data *data) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 106 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 107 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
| 108 | |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 109 | /* |
| 110 | * We don't need to disable IRQs to make these atomic since |
| 111 | * they are already disabled earlier in the low level |
| 112 | * interrupt code. |
| 113 | */ |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 114 | set_c0_status(0x100 << cd->bit); |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 115 | } |
| 116 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 117 | static void octeon_irq_core_set_enable_local(void *arg) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 118 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 119 | struct irq_data *data = arg; |
| 120 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
| 121 | unsigned int mask = 0x100 << cd->bit; |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 122 | |
| 123 | /* |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 124 | * Interrupts are already disabled, so these are atomic. |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 125 | */ |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 126 | if (cd->desired_en) |
| 127 | set_c0_status(mask); |
| 128 | else |
| 129 | clear_c0_status(mask); |
| 130 | |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 131 | } |
| 132 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 133 | static void octeon_irq_core_disable(struct irq_data *data) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 134 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 135 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
| 136 | cd->desired_en = false; |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 137 | } |
| 138 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 139 | static void octeon_irq_core_enable(struct irq_data *data) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 140 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 141 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
| 142 | cd->desired_en = true; |
| 143 | } |
| 144 | |
| 145 | static void octeon_irq_core_bus_lock(struct irq_data *data) |
| 146 | { |
| 147 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
| 148 | |
| 149 | mutex_lock(&cd->core_irq_mutex); |
| 150 | } |
| 151 | |
| 152 | static void octeon_irq_core_bus_sync_unlock(struct irq_data *data) |
| 153 | { |
| 154 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
| 155 | |
| 156 | if (cd->desired_en != cd->current_en) { |
| 157 | on_each_cpu(octeon_irq_core_set_enable_local, data, 1); |
| 158 | |
| 159 | cd->current_en = cd->desired_en; |
| 160 | } |
| 161 | |
| 162 | mutex_unlock(&cd->core_irq_mutex); |
| 163 | } |
| 164 | |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 165 | static struct irq_chip octeon_irq_chip_core = { |
| 166 | .name = "Core", |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 167 | .irq_enable = octeon_irq_core_enable, |
| 168 | .irq_disable = octeon_irq_core_disable, |
| 169 | .irq_ack = octeon_irq_core_ack, |
| 170 | .irq_eoi = octeon_irq_core_eoi, |
| 171 | .irq_bus_lock = octeon_irq_core_bus_lock, |
| 172 | .irq_bus_sync_unlock = octeon_irq_core_bus_sync_unlock, |
| 173 | |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 174 | .irq_cpu_online = octeon_irq_core_eoi, |
| 175 | .irq_cpu_offline = octeon_irq_core_ack, |
| 176 | .flags = IRQCHIP_ONOFFLINE_ENABLED, |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 177 | }; |
| 178 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 179 | static void __init octeon_irq_init_core(void) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 180 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 181 | int i; |
| 182 | int irq; |
| 183 | struct octeon_core_chip_data *cd; |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 184 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 185 | for (i = 0; i < MIPS_CORE_IRQ_LINES; i++) { |
| 186 | cd = &octeon_irq_core_chip_data[i]; |
| 187 | cd->current_en = false; |
| 188 | cd->desired_en = false; |
| 189 | cd->bit = i; |
| 190 | mutex_init(&cd->core_irq_mutex); |
| 191 | |
| 192 | irq = OCTEON_IRQ_SW0 + i; |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 193 | irq_set_chip_data(irq, cd); |
| 194 | irq_set_chip_and_handler(irq, &octeon_irq_chip_core, |
| 195 | handle_percpu_irq); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 196 | } |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 197 | } |
| 198 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 199 | static int next_cpu_for_irq(struct irq_data *data) |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 200 | { |
| 201 | |
| 202 | #ifdef CONFIG_SMP |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 203 | int cpu; |
| 204 | int weight = cpumask_weight(data->affinity); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 205 | |
| 206 | if (weight > 1) { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 207 | cpu = smp_processor_id(); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 208 | for (;;) { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 209 | cpu = cpumask_next(cpu, data->affinity); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 210 | if (cpu >= nr_cpu_ids) { |
| 211 | cpu = -1; |
| 212 | continue; |
| 213 | } else if (cpumask_test_cpu(cpu, cpu_online_mask)) { |
| 214 | break; |
| 215 | } |
| 216 | } |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 217 | } else if (weight == 1) { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 218 | cpu = cpumask_first(data->affinity); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 219 | } else { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 220 | cpu = smp_processor_id(); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 221 | } |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 222 | return cpu; |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 223 | #else |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 224 | return smp_processor_id(); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 225 | #endif |
| 226 | } |
| 227 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 228 | static void octeon_irq_ciu_enable(struct irq_data *data) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 229 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 230 | int cpu = next_cpu_for_irq(data); |
| 231 | int coreid = octeon_coreid_for_cpu(cpu); |
| 232 | unsigned long *pen; |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 233 | unsigned long flags; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 234 | union octeon_ciu_chip_data cd; |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 235 | raw_spinlock_t *lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 236 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 237 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 238 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 239 | raw_spin_lock_irqsave(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 240 | if (cd.s.line == 0) { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 241 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 242 | __set_bit(cd.s.bit, pen); |
| 243 | /* |
| 244 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 245 | * enabling the irq. |
| 246 | */ |
| 247 | wmb(); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 248 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 249 | } else { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 250 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 251 | __set_bit(cd.s.bit, pen); |
| 252 | /* |
| 253 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 254 | * enabling the irq. |
| 255 | */ |
| 256 | wmb(); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 257 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 258 | } |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 259 | raw_spin_unlock_irqrestore(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | static void octeon_irq_ciu_enable_local(struct irq_data *data) |
| 263 | { |
| 264 | unsigned long *pen; |
| 265 | unsigned long flags; |
| 266 | union octeon_ciu_chip_data cd; |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 267 | raw_spinlock_t *lock = this_cpu_ptr(&octeon_irq_ciu_spinlock); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 268 | |
| 269 | cd.p = irq_data_get_irq_chip_data(data); |
| 270 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 271 | raw_spin_lock_irqsave(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 272 | if (cd.s.line == 0) { |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 273 | pen = this_cpu_ptr(&octeon_irq_ciu0_en_mirror); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 274 | __set_bit(cd.s.bit, pen); |
| 275 | /* |
| 276 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 277 | * enabling the irq. |
| 278 | */ |
| 279 | wmb(); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 280 | cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num() * 2), *pen); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 281 | } else { |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 282 | pen = this_cpu_ptr(&octeon_irq_ciu1_en_mirror); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 283 | __set_bit(cd.s.bit, pen); |
| 284 | /* |
| 285 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 286 | * enabling the irq. |
| 287 | */ |
| 288 | wmb(); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 289 | cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num() * 2 + 1), *pen); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 290 | } |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 291 | raw_spin_unlock_irqrestore(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | static void octeon_irq_ciu_disable_local(struct irq_data *data) |
| 295 | { |
| 296 | unsigned long *pen; |
| 297 | unsigned long flags; |
| 298 | union octeon_ciu_chip_data cd; |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 299 | raw_spinlock_t *lock = this_cpu_ptr(&octeon_irq_ciu_spinlock); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 300 | |
| 301 | cd.p = irq_data_get_irq_chip_data(data); |
| 302 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 303 | raw_spin_lock_irqsave(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 304 | if (cd.s.line == 0) { |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 305 | pen = this_cpu_ptr(&octeon_irq_ciu0_en_mirror); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 306 | __clear_bit(cd.s.bit, pen); |
| 307 | /* |
| 308 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 309 | * enabling the irq. |
| 310 | */ |
| 311 | wmb(); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 312 | cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num() * 2), *pen); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 313 | } else { |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 314 | pen = this_cpu_ptr(&octeon_irq_ciu1_en_mirror); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 315 | __clear_bit(cd.s.bit, pen); |
| 316 | /* |
| 317 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 318 | * enabling the irq. |
| 319 | */ |
| 320 | wmb(); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 321 | cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num() * 2 + 1), *pen); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 322 | } |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 323 | raw_spin_unlock_irqrestore(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | static void octeon_irq_ciu_disable_all(struct irq_data *data) |
| 327 | { |
| 328 | unsigned long flags; |
| 329 | unsigned long *pen; |
| 330 | int cpu; |
| 331 | union octeon_ciu_chip_data cd; |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 332 | raw_spinlock_t *lock; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 333 | |
| 334 | cd.p = irq_data_get_irq_chip_data(data); |
| 335 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 336 | for_each_online_cpu(cpu) { |
| 337 | int coreid = octeon_coreid_for_cpu(cpu); |
| 338 | lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); |
| 339 | if (cd.s.line == 0) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 340 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 341 | else |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 342 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 343 | |
| 344 | raw_spin_lock_irqsave(lock, flags); |
| 345 | __clear_bit(cd.s.bit, pen); |
| 346 | /* |
| 347 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 348 | * enabling the irq. |
| 349 | */ |
| 350 | wmb(); |
| 351 | if (cd.s.line == 0) |
| 352 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
| 353 | else |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 354 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 355 | raw_spin_unlock_irqrestore(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 356 | } |
| 357 | } |
| 358 | |
| 359 | static void octeon_irq_ciu_enable_all(struct irq_data *data) |
| 360 | { |
| 361 | unsigned long flags; |
| 362 | unsigned long *pen; |
| 363 | int cpu; |
| 364 | union octeon_ciu_chip_data cd; |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 365 | raw_spinlock_t *lock; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 366 | |
| 367 | cd.p = irq_data_get_irq_chip_data(data); |
| 368 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 369 | for_each_online_cpu(cpu) { |
| 370 | int coreid = octeon_coreid_for_cpu(cpu); |
| 371 | lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); |
| 372 | if (cd.s.line == 0) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 373 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 374 | else |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 375 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 376 | |
| 377 | raw_spin_lock_irqsave(lock, flags); |
| 378 | __set_bit(cd.s.bit, pen); |
| 379 | /* |
| 380 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 381 | * enabling the irq. |
| 382 | */ |
| 383 | wmb(); |
| 384 | if (cd.s.line == 0) |
| 385 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
| 386 | else |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 387 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 388 | raw_spin_unlock_irqrestore(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 389 | } |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 390 | } |
| 391 | |
| 392 | /* |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 393 | * Enable the irq on the next core in the affinity set for chips that |
| 394 | * have the EN*_W1{S,C} registers. |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 395 | */ |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 396 | static void octeon_irq_ciu_enable_v2(struct irq_data *data) |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 397 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 398 | u64 mask; |
| 399 | int cpu = next_cpu_for_irq(data); |
| 400 | union octeon_ciu_chip_data cd; |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 401 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 402 | cd.p = irq_data_get_irq_chip_data(data); |
| 403 | mask = 1ull << (cd.s.bit); |
| 404 | |
| 405 | /* |
| 406 | * Called under the desc lock, so these should never get out |
| 407 | * of sync. |
| 408 | */ |
| 409 | if (cd.s.line == 0) { |
| 410 | int index = octeon_coreid_for_cpu(cpu) * 2; |
| 411 | set_bit(cd.s.bit, &per_cpu(octeon_irq_ciu0_en_mirror, cpu)); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 412 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 413 | } else { |
| 414 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; |
| 415 | set_bit(cd.s.bit, &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); |
| 416 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 417 | } |
| 418 | } |
| 419 | |
| 420 | /* |
| 421 | * Enable the irq on the current CPU for chips that |
| 422 | * have the EN*_W1{S,C} registers. |
| 423 | */ |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 424 | static void octeon_irq_ciu_enable_local_v2(struct irq_data *data) |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 425 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 426 | u64 mask; |
| 427 | union octeon_ciu_chip_data cd; |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 428 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 429 | cd.p = irq_data_get_irq_chip_data(data); |
| 430 | mask = 1ull << (cd.s.bit); |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 431 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 432 | if (cd.s.line == 0) { |
| 433 | int index = cvmx_get_core_num() * 2; |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 434 | set_bit(cd.s.bit, this_cpu_ptr(&octeon_irq_ciu0_en_mirror)); |
David Daney | dbb103b | 2010-01-07 11:05:00 -0800 | [diff] [blame] | 435 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 436 | } else { |
| 437 | int index = cvmx_get_core_num() * 2 + 1; |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 438 | set_bit(cd.s.bit, this_cpu_ptr(&octeon_irq_ciu1_en_mirror)); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 439 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
| 440 | } |
David Daney | dbb103b | 2010-01-07 11:05:00 -0800 | [diff] [blame] | 441 | } |
| 442 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 443 | static void octeon_irq_ciu_disable_local_v2(struct irq_data *data) |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 444 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 445 | u64 mask; |
| 446 | union octeon_ciu_chip_data cd; |
| 447 | |
| 448 | cd.p = irq_data_get_irq_chip_data(data); |
| 449 | mask = 1ull << (cd.s.bit); |
| 450 | |
| 451 | if (cd.s.line == 0) { |
| 452 | int index = cvmx_get_core_num() * 2; |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 453 | clear_bit(cd.s.bit, this_cpu_ptr(&octeon_irq_ciu0_en_mirror)); |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 454 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 455 | } else { |
| 456 | int index = cvmx_get_core_num() * 2 + 1; |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 457 | clear_bit(cd.s.bit, this_cpu_ptr(&octeon_irq_ciu1_en_mirror)); |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 458 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask); |
| 459 | } |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 460 | } |
| 461 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 462 | /* |
| 463 | * Write to the W1C bit in CVMX_CIU_INTX_SUM0 to clear the irq. |
| 464 | */ |
| 465 | static void octeon_irq_ciu_ack(struct irq_data *data) |
| 466 | { |
| 467 | u64 mask; |
| 468 | union octeon_ciu_chip_data cd; |
| 469 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 470 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 471 | mask = 1ull << (cd.s.bit); |
| 472 | |
| 473 | if (cd.s.line == 0) { |
| 474 | int index = cvmx_get_core_num() * 2; |
| 475 | cvmx_write_csr(CVMX_CIU_INTX_SUM0(index), mask); |
| 476 | } else { |
| 477 | cvmx_write_csr(CVMX_CIU_INT_SUM1, mask); |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | /* |
| 482 | * Disable the irq on the all cores for chips that have the EN*_W1{S,C} |
| 483 | * registers. |
| 484 | */ |
| 485 | static void octeon_irq_ciu_disable_all_v2(struct irq_data *data) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 486 | { |
| 487 | int cpu; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 488 | u64 mask; |
| 489 | union octeon_ciu_chip_data cd; |
| 490 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 491 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 492 | mask = 1ull << (cd.s.bit); |
| 493 | |
| 494 | if (cd.s.line == 0) { |
| 495 | for_each_online_cpu(cpu) { |
| 496 | int index = octeon_coreid_for_cpu(cpu) * 2; |
| 497 | clear_bit(cd.s.bit, &per_cpu(octeon_irq_ciu0_en_mirror, cpu)); |
| 498 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask); |
| 499 | } |
| 500 | } else { |
| 501 | for_each_online_cpu(cpu) { |
| 502 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; |
| 503 | clear_bit(cd.s.bit, &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); |
| 504 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask); |
| 505 | } |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | /* |
| 510 | * Enable the irq on the all cores for chips that have the EN*_W1{S,C} |
| 511 | * registers. |
| 512 | */ |
| 513 | static void octeon_irq_ciu_enable_all_v2(struct irq_data *data) |
| 514 | { |
| 515 | int cpu; |
| 516 | u64 mask; |
| 517 | union octeon_ciu_chip_data cd; |
| 518 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 519 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 520 | mask = 1ull << (cd.s.bit); |
| 521 | |
| 522 | if (cd.s.line == 0) { |
| 523 | for_each_online_cpu(cpu) { |
| 524 | int index = octeon_coreid_for_cpu(cpu) * 2; |
| 525 | set_bit(cd.s.bit, &per_cpu(octeon_irq_ciu0_en_mirror, cpu)); |
| 526 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
| 527 | } |
| 528 | } else { |
| 529 | for_each_online_cpu(cpu) { |
| 530 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; |
| 531 | set_bit(cd.s.bit, &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); |
| 532 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
| 533 | } |
| 534 | } |
| 535 | } |
| 536 | |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 537 | static void octeon_irq_gpio_setup(struct irq_data *data) |
| 538 | { |
| 539 | union cvmx_gpio_bit_cfgx cfg; |
| 540 | union octeon_ciu_chip_data cd; |
| 541 | u32 t = irqd_get_trigger_type(data); |
| 542 | |
| 543 | cd.p = irq_data_get_irq_chip_data(data); |
| 544 | |
| 545 | cfg.u64 = 0; |
| 546 | cfg.s.int_en = 1; |
| 547 | cfg.s.int_type = (t & IRQ_TYPE_EDGE_BOTH) != 0; |
| 548 | cfg.s.rx_xor = (t & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING)) != 0; |
| 549 | |
| 550 | /* 140 nS glitch filter*/ |
| 551 | cfg.s.fil_cnt = 7; |
| 552 | cfg.s.fil_sel = 3; |
| 553 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 554 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), cfg.u64); |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | static void octeon_irq_ciu_enable_gpio_v2(struct irq_data *data) |
| 558 | { |
| 559 | octeon_irq_gpio_setup(data); |
| 560 | octeon_irq_ciu_enable_v2(data); |
| 561 | } |
| 562 | |
| 563 | static void octeon_irq_ciu_enable_gpio(struct irq_data *data) |
| 564 | { |
| 565 | octeon_irq_gpio_setup(data); |
| 566 | octeon_irq_ciu_enable(data); |
| 567 | } |
| 568 | |
| 569 | static int octeon_irq_ciu_gpio_set_type(struct irq_data *data, unsigned int t) |
| 570 | { |
| 571 | irqd_set_trigger_type(data, t); |
| 572 | octeon_irq_gpio_setup(data); |
| 573 | |
| 574 | return IRQ_SET_MASK_OK; |
| 575 | } |
| 576 | |
| 577 | static void octeon_irq_ciu_disable_gpio_v2(struct irq_data *data) |
| 578 | { |
| 579 | union octeon_ciu_chip_data cd; |
| 580 | |
| 581 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 582 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), 0); |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 583 | |
| 584 | octeon_irq_ciu_disable_all_v2(data); |
| 585 | } |
| 586 | |
| 587 | static void octeon_irq_ciu_disable_gpio(struct irq_data *data) |
| 588 | { |
| 589 | union octeon_ciu_chip_data cd; |
| 590 | |
| 591 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 592 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), 0); |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 593 | |
| 594 | octeon_irq_ciu_disable_all(data); |
| 595 | } |
| 596 | |
| 597 | static void octeon_irq_ciu_gpio_ack(struct irq_data *data) |
| 598 | { |
| 599 | union octeon_ciu_chip_data cd; |
| 600 | u64 mask; |
| 601 | |
| 602 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 603 | mask = 1ull << (cd.s.gpio_line); |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 604 | |
| 605 | cvmx_write_csr(CVMX_GPIO_INT_CLR, mask); |
| 606 | } |
| 607 | |
| 608 | static void octeon_irq_handle_gpio(unsigned int irq, struct irq_desc *desc) |
| 609 | { |
Javier Martinez Canillas | 5ebf1f2 | 2013-06-14 18:40:48 +0200 | [diff] [blame] | 610 | if (irq_get_trigger_type(irq) & IRQ_TYPE_EDGE_BOTH) |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 611 | handle_edge_irq(irq, desc); |
| 612 | else |
| 613 | handle_level_irq(irq, desc); |
| 614 | } |
| 615 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 616 | #ifdef CONFIG_SMP |
| 617 | |
| 618 | static void octeon_irq_cpu_offline_ciu(struct irq_data *data) |
| 619 | { |
| 620 | int cpu = smp_processor_id(); |
| 621 | cpumask_t new_affinity; |
| 622 | |
| 623 | if (!cpumask_test_cpu(cpu, data->affinity)) |
| 624 | return; |
| 625 | |
| 626 | if (cpumask_weight(data->affinity) > 1) { |
| 627 | /* |
| 628 | * It has multi CPU affinity, just remove this CPU |
| 629 | * from the affinity set. |
| 630 | */ |
| 631 | cpumask_copy(&new_affinity, data->affinity); |
| 632 | cpumask_clear_cpu(cpu, &new_affinity); |
| 633 | } else { |
| 634 | /* Otherwise, put it on lowest numbered online CPU. */ |
| 635 | cpumask_clear(&new_affinity); |
| 636 | cpumask_set_cpu(cpumask_first(cpu_online_mask), &new_affinity); |
| 637 | } |
Thomas Gleixner | 01f8fa4 | 2014-04-16 14:36:44 +0000 | [diff] [blame] | 638 | irq_set_affinity_locked(data, &new_affinity, false); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | static int octeon_irq_ciu_set_affinity(struct irq_data *data, |
| 642 | const struct cpumask *dest, bool force) |
| 643 | { |
| 644 | int cpu; |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 645 | bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data); |
David Daney | b6b74d5 | 2009-10-13 08:52:28 -0700 | [diff] [blame] | 646 | unsigned long flags; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 647 | union octeon_ciu_chip_data cd; |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 648 | unsigned long *pen; |
| 649 | raw_spinlock_t *lock; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 650 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 651 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 652 | |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 653 | /* |
| 654 | * For non-v2 CIU, we will allow only single CPU affinity. |
| 655 | * This removes the need to do locking in the .ack/.eoi |
| 656 | * functions. |
| 657 | */ |
| 658 | if (cpumask_weight(dest) != 1) |
| 659 | return -EINVAL; |
| 660 | |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 661 | if (!enable_one) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 662 | return 0; |
Yinghai Lu | d5dedd4 | 2009-04-27 17:59:21 -0700 | [diff] [blame] | 663 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 664 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 665 | for_each_online_cpu(cpu) { |
| 666 | int coreid = octeon_coreid_for_cpu(cpu); |
| 667 | |
| 668 | lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); |
| 669 | raw_spin_lock_irqsave(lock, flags); |
| 670 | |
| 671 | if (cd.s.line == 0) |
| 672 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
| 673 | else |
| 674 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
| 675 | |
| 676 | if (cpumask_test_cpu(cpu, dest) && enable_one) { |
| 677 | enable_one = 0; |
| 678 | __set_bit(cd.s.bit, pen); |
| 679 | } else { |
| 680 | __clear_bit(cd.s.bit, pen); |
| 681 | } |
| 682 | /* |
| 683 | * Must be visible to octeon_irq_ip{2,3}_ciu() before |
| 684 | * enabling the irq. |
| 685 | */ |
| 686 | wmb(); |
| 687 | |
| 688 | if (cd.s.line == 0) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 689 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 690 | else |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 691 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 692 | |
| 693 | raw_spin_unlock_irqrestore(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 694 | } |
Yinghai Lu | d5dedd4 | 2009-04-27 17:59:21 -0700 | [diff] [blame] | 695 | return 0; |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 696 | } |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 697 | |
| 698 | /* |
| 699 | * Set affinity for the irq for chips that have the EN*_W1{S,C} |
| 700 | * registers. |
| 701 | */ |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 702 | static int octeon_irq_ciu_set_affinity_v2(struct irq_data *data, |
| 703 | const struct cpumask *dest, |
| 704 | bool force) |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 705 | { |
| 706 | int cpu; |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 707 | bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 708 | u64 mask; |
| 709 | union octeon_ciu_chip_data cd; |
| 710 | |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 711 | if (!enable_one) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 712 | return 0; |
| 713 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 714 | cd.p = irq_data_get_irq_chip_data(data); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 715 | mask = 1ull << cd.s.bit; |
| 716 | |
| 717 | if (cd.s.line == 0) { |
| 718 | for_each_online_cpu(cpu) { |
| 719 | unsigned long *pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
| 720 | int index = octeon_coreid_for_cpu(cpu) * 2; |
| 721 | if (cpumask_test_cpu(cpu, dest) && enable_one) { |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 722 | enable_one = false; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 723 | set_bit(cd.s.bit, pen); |
| 724 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
| 725 | } else { |
| 726 | clear_bit(cd.s.bit, pen); |
| 727 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask); |
| 728 | } |
| 729 | } |
| 730 | } else { |
| 731 | for_each_online_cpu(cpu) { |
| 732 | unsigned long *pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
| 733 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; |
| 734 | if (cpumask_test_cpu(cpu, dest) && enable_one) { |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 735 | enable_one = false; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 736 | set_bit(cd.s.bit, pen); |
| 737 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
| 738 | } else { |
| 739 | clear_bit(cd.s.bit, pen); |
| 740 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask); |
| 741 | } |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 742 | } |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 743 | } |
| 744 | return 0; |
| 745 | } |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 746 | #endif |
| 747 | |
David Daney | cd847b7 | 2009-10-13 11:26:03 -0700 | [diff] [blame] | 748 | /* |
| 749 | * Newer octeon chips have support for lockless CIU operation. |
| 750 | */ |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 751 | static struct irq_chip octeon_irq_chip_ciu_v2 = { |
| 752 | .name = "CIU", |
| 753 | .irq_enable = octeon_irq_ciu_enable_v2, |
| 754 | .irq_disable = octeon_irq_ciu_disable_all_v2, |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 755 | .irq_ack = octeon_irq_ciu_ack, |
| 756 | .irq_mask = octeon_irq_ciu_disable_local_v2, |
| 757 | .irq_unmask = octeon_irq_ciu_enable_v2, |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 758 | #ifdef CONFIG_SMP |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 759 | .irq_set_affinity = octeon_irq_ciu_set_affinity_v2, |
| 760 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 761 | #endif |
| 762 | }; |
| 763 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 764 | static struct irq_chip octeon_irq_chip_ciu = { |
| 765 | .name = "CIU", |
| 766 | .irq_enable = octeon_irq_ciu_enable, |
| 767 | .irq_disable = octeon_irq_ciu_disable_all, |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 768 | .irq_ack = octeon_irq_ciu_ack, |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 769 | .irq_mask = octeon_irq_ciu_disable_local, |
| 770 | .irq_unmask = octeon_irq_ciu_enable, |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 771 | #ifdef CONFIG_SMP |
| 772 | .irq_set_affinity = octeon_irq_ciu_set_affinity, |
| 773 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
| 774 | #endif |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 775 | }; |
| 776 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 777 | /* The mbox versions don't do any affinity or round-robin. */ |
| 778 | static struct irq_chip octeon_irq_chip_ciu_mbox_v2 = { |
| 779 | .name = "CIU-M", |
| 780 | .irq_enable = octeon_irq_ciu_enable_all_v2, |
| 781 | .irq_disable = octeon_irq_ciu_disable_all_v2, |
| 782 | .irq_ack = octeon_irq_ciu_disable_local_v2, |
| 783 | .irq_eoi = octeon_irq_ciu_enable_local_v2, |
| 784 | |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 785 | .irq_cpu_online = octeon_irq_ciu_enable_local_v2, |
| 786 | .irq_cpu_offline = octeon_irq_ciu_disable_local_v2, |
| 787 | .flags = IRQCHIP_ONOFFLINE_ENABLED, |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 788 | }; |
| 789 | |
| 790 | static struct irq_chip octeon_irq_chip_ciu_mbox = { |
| 791 | .name = "CIU-M", |
| 792 | .irq_enable = octeon_irq_ciu_enable_all, |
| 793 | .irq_disable = octeon_irq_ciu_disable_all, |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 794 | .irq_ack = octeon_irq_ciu_disable_local, |
| 795 | .irq_eoi = octeon_irq_ciu_enable_local, |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 796 | |
Thomas Gleixner | 5b7cd6f | 2011-03-27 16:04:30 +0200 | [diff] [blame] | 797 | .irq_cpu_online = octeon_irq_ciu_enable_local, |
| 798 | .irq_cpu_offline = octeon_irq_ciu_disable_local, |
| 799 | .flags = IRQCHIP_ONOFFLINE_ENABLED, |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 800 | }; |
| 801 | |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 802 | static struct irq_chip octeon_irq_chip_ciu_gpio_v2 = { |
| 803 | .name = "CIU-GPIO", |
| 804 | .irq_enable = octeon_irq_ciu_enable_gpio_v2, |
| 805 | .irq_disable = octeon_irq_ciu_disable_gpio_v2, |
| 806 | .irq_ack = octeon_irq_ciu_gpio_ack, |
| 807 | .irq_mask = octeon_irq_ciu_disable_local_v2, |
| 808 | .irq_unmask = octeon_irq_ciu_enable_v2, |
| 809 | .irq_set_type = octeon_irq_ciu_gpio_set_type, |
| 810 | #ifdef CONFIG_SMP |
| 811 | .irq_set_affinity = octeon_irq_ciu_set_affinity_v2, |
Alexander Sverdlin | cf35570 | 2014-10-23 15:55:04 +0200 | [diff] [blame] | 812 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 813 | #endif |
| 814 | .flags = IRQCHIP_SET_TYPE_MASKED, |
| 815 | }; |
| 816 | |
| 817 | static struct irq_chip octeon_irq_chip_ciu_gpio = { |
| 818 | .name = "CIU-GPIO", |
| 819 | .irq_enable = octeon_irq_ciu_enable_gpio, |
| 820 | .irq_disable = octeon_irq_ciu_disable_gpio, |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 821 | .irq_mask = octeon_irq_ciu_disable_local, |
| 822 | .irq_unmask = octeon_irq_ciu_enable, |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 823 | .irq_ack = octeon_irq_ciu_gpio_ack, |
| 824 | .irq_set_type = octeon_irq_ciu_gpio_set_type, |
| 825 | #ifdef CONFIG_SMP |
| 826 | .irq_set_affinity = octeon_irq_ciu_set_affinity, |
Alexander Sverdlin | cf35570 | 2014-10-23 15:55:04 +0200 | [diff] [blame] | 827 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
David Daney | 6d1ab4c | 2012-07-05 18:12:37 +0200 | [diff] [blame] | 828 | #endif |
| 829 | .flags = IRQCHIP_SET_TYPE_MASKED, |
| 830 | }; |
| 831 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 832 | /* |
| 833 | * Watchdog interrupts are special. They are associated with a single |
| 834 | * core, so we hardwire the affinity to that core. |
| 835 | */ |
| 836 | static void octeon_irq_ciu_wd_enable(struct irq_data *data) |
| 837 | { |
| 838 | unsigned long flags; |
| 839 | unsigned long *pen; |
| 840 | int coreid = data->irq - OCTEON_IRQ_WDOG0; /* Bit 0-63 of EN1 */ |
| 841 | int cpu = octeon_cpu_for_coreid(coreid); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 842 | raw_spinlock_t *lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 843 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 844 | raw_spin_lock_irqsave(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 845 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 846 | __set_bit(coreid, pen); |
| 847 | /* |
| 848 | * Must be visible to octeon_irq_ip{2,3}_ciu() before enabling |
| 849 | * the irq. |
| 850 | */ |
| 851 | wmb(); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 852 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 853 | raw_spin_unlock_irqrestore(lock, flags); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 854 | } |
| 855 | |
| 856 | /* |
| 857 | * Watchdog interrupts are special. They are associated with a single |
| 858 | * core, so we hardwire the affinity to that core. |
| 859 | */ |
| 860 | static void octeon_irq_ciu1_wd_enable_v2(struct irq_data *data) |
| 861 | { |
| 862 | int coreid = data->irq - OCTEON_IRQ_WDOG0; |
| 863 | int cpu = octeon_cpu_for_coreid(coreid); |
| 864 | |
| 865 | set_bit(coreid, &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); |
| 866 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(coreid * 2 + 1), 1ull << coreid); |
| 867 | } |
| 868 | |
| 869 | |
| 870 | static struct irq_chip octeon_irq_chip_ciu_wd_v2 = { |
| 871 | .name = "CIU-W", |
| 872 | .irq_enable = octeon_irq_ciu1_wd_enable_v2, |
| 873 | .irq_disable = octeon_irq_ciu_disable_all_v2, |
| 874 | .irq_mask = octeon_irq_ciu_disable_local_v2, |
| 875 | .irq_unmask = octeon_irq_ciu_enable_local_v2, |
| 876 | }; |
| 877 | |
| 878 | static struct irq_chip octeon_irq_chip_ciu_wd = { |
| 879 | .name = "CIU-W", |
| 880 | .irq_enable = octeon_irq_ciu_wd_enable, |
| 881 | .irq_disable = octeon_irq_ciu_disable_all, |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 882 | .irq_mask = octeon_irq_ciu_disable_local, |
| 883 | .irq_unmask = octeon_irq_ciu_enable_local, |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 884 | }; |
| 885 | |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 886 | static bool octeon_irq_ciu_is_edge(unsigned int line, unsigned int bit) |
| 887 | { |
| 888 | bool edge = false; |
| 889 | |
| 890 | if (line == 0) |
| 891 | switch (bit) { |
| 892 | case 48 ... 49: /* GMX DRP */ |
| 893 | case 50: /* IPD_DRP */ |
| 894 | case 52 ... 55: /* Timers */ |
| 895 | case 58: /* MPI */ |
| 896 | edge = true; |
| 897 | break; |
| 898 | default: |
| 899 | break; |
| 900 | } |
| 901 | else /* line == 1 */ |
| 902 | switch (bit) { |
| 903 | case 47: /* PTP */ |
| 904 | edge = true; |
| 905 | break; |
| 906 | default: |
| 907 | break; |
| 908 | } |
| 909 | return edge; |
| 910 | } |
| 911 | |
| 912 | struct octeon_irq_gpio_domain_data { |
| 913 | unsigned int base_hwirq; |
| 914 | }; |
| 915 | |
| 916 | static int octeon_irq_gpio_xlat(struct irq_domain *d, |
| 917 | struct device_node *node, |
| 918 | const u32 *intspec, |
| 919 | unsigned int intsize, |
| 920 | unsigned long *out_hwirq, |
| 921 | unsigned int *out_type) |
| 922 | { |
| 923 | unsigned int type; |
| 924 | unsigned int pin; |
| 925 | unsigned int trigger; |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 926 | |
| 927 | if (d->of_node != node) |
| 928 | return -EINVAL; |
| 929 | |
| 930 | if (intsize < 2) |
| 931 | return -EINVAL; |
| 932 | |
| 933 | pin = intspec[0]; |
| 934 | if (pin >= 16) |
| 935 | return -EINVAL; |
| 936 | |
| 937 | trigger = intspec[1]; |
| 938 | |
| 939 | switch (trigger) { |
| 940 | case 1: |
| 941 | type = IRQ_TYPE_EDGE_RISING; |
| 942 | break; |
| 943 | case 2: |
| 944 | type = IRQ_TYPE_EDGE_FALLING; |
| 945 | break; |
| 946 | case 4: |
| 947 | type = IRQ_TYPE_LEVEL_HIGH; |
| 948 | break; |
| 949 | case 8: |
| 950 | type = IRQ_TYPE_LEVEL_LOW; |
| 951 | break; |
| 952 | default: |
| 953 | pr_err("Error: (%s) Invalid irq trigger specification: %x\n", |
| 954 | node->name, |
| 955 | trigger); |
| 956 | type = IRQ_TYPE_LEVEL_LOW; |
| 957 | break; |
| 958 | } |
| 959 | *out_type = type; |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 960 | *out_hwirq = pin; |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 961 | |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | static int octeon_irq_ciu_xlat(struct irq_domain *d, |
| 966 | struct device_node *node, |
| 967 | const u32 *intspec, |
| 968 | unsigned int intsize, |
| 969 | unsigned long *out_hwirq, |
| 970 | unsigned int *out_type) |
| 971 | { |
| 972 | unsigned int ciu, bit; |
| 973 | |
| 974 | ciu = intspec[0]; |
| 975 | bit = intspec[1]; |
| 976 | |
| 977 | if (ciu > 1 || bit > 63) |
| 978 | return -EINVAL; |
| 979 | |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 980 | *out_hwirq = (ciu << 6) | bit; |
| 981 | *out_type = 0; |
| 982 | |
| 983 | return 0; |
| 984 | } |
| 985 | |
| 986 | static struct irq_chip *octeon_irq_ciu_chip; |
| 987 | static struct irq_chip *octeon_irq_gpio_chip; |
| 988 | |
| 989 | static bool octeon_irq_virq_in_range(unsigned int virq) |
| 990 | { |
| 991 | /* We cannot let it overflow the mapping array. */ |
| 992 | if (virq < (1ul << 8 * sizeof(octeon_irq_ciu_to_irq[0][0]))) |
| 993 | return true; |
| 994 | |
| 995 | WARN_ONCE(true, "virq out of range %u.\n", virq); |
| 996 | return false; |
| 997 | } |
| 998 | |
| 999 | static int octeon_irq_ciu_map(struct irq_domain *d, |
| 1000 | unsigned int virq, irq_hw_number_t hw) |
| 1001 | { |
| 1002 | unsigned int line = hw >> 6; |
| 1003 | unsigned int bit = hw & 63; |
| 1004 | |
| 1005 | if (!octeon_irq_virq_in_range(virq)) |
| 1006 | return -EINVAL; |
| 1007 | |
Andreas Herrmann | 2eddb70 | 2014-03-19 23:03:30 +0100 | [diff] [blame] | 1008 | /* Don't map irq if it is reserved for GPIO. */ |
| 1009 | if (line == 0 && bit >= 16 && bit <32) |
| 1010 | return 0; |
| 1011 | |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1012 | if (line > 1 || octeon_irq_ciu_to_irq[line][bit] != 0) |
| 1013 | return -EINVAL; |
| 1014 | |
| 1015 | if (octeon_irq_ciu_is_edge(line, bit)) |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1016 | octeon_irq_set_ciu_mapping(virq, line, bit, 0, |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1017 | octeon_irq_ciu_chip, |
| 1018 | handle_edge_irq); |
| 1019 | else |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1020 | octeon_irq_set_ciu_mapping(virq, line, bit, 0, |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1021 | octeon_irq_ciu_chip, |
| 1022 | handle_level_irq); |
| 1023 | |
| 1024 | return 0; |
| 1025 | } |
| 1026 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1027 | static int octeon_irq_gpio_map_common(struct irq_domain *d, |
| 1028 | unsigned int virq, irq_hw_number_t hw, |
| 1029 | int line_limit, struct irq_chip *chip) |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1030 | { |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1031 | struct octeon_irq_gpio_domain_data *gpiod = d->host_data; |
| 1032 | unsigned int line, bit; |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1033 | |
| 1034 | if (!octeon_irq_virq_in_range(virq)) |
| 1035 | return -EINVAL; |
| 1036 | |
Alexander Sverdlin | d41d547 | 2013-04-11 17:29:39 +0200 | [diff] [blame] | 1037 | line = (hw + gpiod->base_hwirq) >> 6; |
| 1038 | bit = (hw + gpiod->base_hwirq) & 63; |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1039 | if (line > line_limit || octeon_irq_ciu_to_irq[line][bit] != 0) |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1040 | return -EINVAL; |
| 1041 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1042 | octeon_irq_set_ciu_mapping(virq, line, bit, hw, |
| 1043 | chip, octeon_irq_handle_gpio); |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1044 | return 0; |
| 1045 | } |
| 1046 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1047 | static int octeon_irq_gpio_map(struct irq_domain *d, |
| 1048 | unsigned int virq, irq_hw_number_t hw) |
| 1049 | { |
| 1050 | return octeon_irq_gpio_map_common(d, virq, hw, 1, octeon_irq_gpio_chip); |
| 1051 | } |
| 1052 | |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1053 | static struct irq_domain_ops octeon_irq_domain_ciu_ops = { |
| 1054 | .map = octeon_irq_ciu_map, |
| 1055 | .xlate = octeon_irq_ciu_xlat, |
| 1056 | }; |
| 1057 | |
| 1058 | static struct irq_domain_ops octeon_irq_domain_gpio_ops = { |
| 1059 | .map = octeon_irq_gpio_map, |
| 1060 | .xlate = octeon_irq_gpio_xlat, |
| 1061 | }; |
| 1062 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 1063 | static void octeon_irq_ip2_ciu(void) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1064 | { |
| 1065 | const unsigned long core_id = cvmx_get_core_num(); |
| 1066 | u64 ciu_sum = cvmx_read_csr(CVMX_CIU_INTX_SUM0(core_id * 2)); |
| 1067 | |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 1068 | ciu_sum &= __this_cpu_read(octeon_irq_ciu0_en_mirror); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1069 | if (likely(ciu_sum)) { |
| 1070 | int bit = fls64(ciu_sum) - 1; |
| 1071 | int irq = octeon_irq_ciu_to_irq[0][bit]; |
| 1072 | if (likely(irq)) |
| 1073 | do_IRQ(irq); |
| 1074 | else |
| 1075 | spurious_interrupt(); |
| 1076 | } else { |
| 1077 | spurious_interrupt(); |
| 1078 | } |
| 1079 | } |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1080 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 1081 | static void octeon_irq_ip3_ciu(void) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1082 | { |
| 1083 | u64 ciu_sum = cvmx_read_csr(CVMX_CIU_INT_SUM1); |
| 1084 | |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 1085 | ciu_sum &= __this_cpu_read(octeon_irq_ciu1_en_mirror); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1086 | if (likely(ciu_sum)) { |
| 1087 | int bit = fls64(ciu_sum) - 1; |
| 1088 | int irq = octeon_irq_ciu_to_irq[1][bit]; |
| 1089 | if (likely(irq)) |
| 1090 | do_IRQ(irq); |
| 1091 | else |
| 1092 | spurious_interrupt(); |
| 1093 | } else { |
| 1094 | spurious_interrupt(); |
| 1095 | } |
| 1096 | } |
| 1097 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1098 | static bool octeon_irq_use_ip4; |
| 1099 | |
Paul Gortmaker | 078a55f | 2013-06-18 13:38:59 +0000 | [diff] [blame] | 1100 | static void octeon_irq_local_enable_ip4(void *arg) |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1101 | { |
| 1102 | set_c0_status(STATUSF_IP4); |
| 1103 | } |
| 1104 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1105 | static void octeon_irq_ip4_mask(void) |
| 1106 | { |
| 1107 | clear_c0_status(STATUSF_IP4); |
| 1108 | spurious_interrupt(); |
| 1109 | } |
| 1110 | |
| 1111 | static void (*octeon_irq_ip2)(void); |
| 1112 | static void (*octeon_irq_ip3)(void); |
| 1113 | static void (*octeon_irq_ip4)(void); |
| 1114 | |
Paul Gortmaker | 078a55f | 2013-06-18 13:38:59 +0000 | [diff] [blame] | 1115 | void (*octeon_irq_setup_secondary)(void); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1116 | |
Paul Gortmaker | 078a55f | 2013-06-18 13:38:59 +0000 | [diff] [blame] | 1117 | void octeon_irq_set_ip4_handler(octeon_irq_ip4_handler_t h) |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1118 | { |
| 1119 | octeon_irq_ip4 = h; |
| 1120 | octeon_irq_use_ip4 = true; |
| 1121 | on_each_cpu(octeon_irq_local_enable_ip4, NULL, 1); |
| 1122 | } |
| 1123 | |
Paul Gortmaker | 078a55f | 2013-06-18 13:38:59 +0000 | [diff] [blame] | 1124 | static void octeon_irq_percpu_enable(void) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1125 | { |
| 1126 | irq_cpu_online(); |
| 1127 | } |
| 1128 | |
Paul Gortmaker | 078a55f | 2013-06-18 13:38:59 +0000 | [diff] [blame] | 1129 | static void octeon_irq_init_ciu_percpu(void) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1130 | { |
| 1131 | int coreid = cvmx_get_core_num(); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 1132 | |
| 1133 | |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 1134 | __this_cpu_write(octeon_irq_ciu0_en_mirror, 0); |
| 1135 | __this_cpu_write(octeon_irq_ciu1_en_mirror, 0); |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 1136 | wmb(); |
Christoph Lameter | 3589871 | 2014-08-17 12:30:44 -0500 | [diff] [blame] | 1137 | raw_spin_lock_init(this_cpu_ptr(&octeon_irq_ciu_spinlock)); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1138 | /* |
| 1139 | * Disable All CIU Interrupts. The ones we need will be |
| 1140 | * enabled later. Read the SUM register so we know the write |
| 1141 | * completed. |
| 1142 | */ |
| 1143 | cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2)), 0); |
| 1144 | cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2 + 1)), 0); |
| 1145 | cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2)), 0); |
| 1146 | cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2 + 1)), 0); |
| 1147 | cvmx_read_csr(CVMX_CIU_INTX_SUM0((coreid * 2))); |
| 1148 | } |
| 1149 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1150 | static void octeon_irq_init_ciu2_percpu(void) |
| 1151 | { |
| 1152 | u64 regx, ipx; |
| 1153 | int coreid = cvmx_get_core_num(); |
| 1154 | u64 base = CVMX_CIU2_EN_PPX_IP2_WRKQ(coreid); |
| 1155 | |
| 1156 | /* |
| 1157 | * Disable All CIU2 Interrupts. The ones we need will be |
| 1158 | * enabled later. Read the SUM register so we know the write |
| 1159 | * completed. |
| 1160 | * |
| 1161 | * There are 9 registers and 3 IPX levels with strides 0x1000 |
| 1162 | * and 0x200 respectivly. Use loops to clear them. |
| 1163 | */ |
| 1164 | for (regx = 0; regx <= 0x8000; regx += 0x1000) { |
| 1165 | for (ipx = 0; ipx <= 0x400; ipx += 0x200) |
| 1166 | cvmx_write_csr(base + regx + ipx, 0); |
| 1167 | } |
| 1168 | |
| 1169 | cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(coreid)); |
| 1170 | } |
| 1171 | |
Paul Gortmaker | 078a55f | 2013-06-18 13:38:59 +0000 | [diff] [blame] | 1172 | static void octeon_irq_setup_secondary_ciu(void) |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1173 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1174 | octeon_irq_init_ciu_percpu(); |
| 1175 | octeon_irq_percpu_enable(); |
| 1176 | |
| 1177 | /* Enable the CIU lines */ |
| 1178 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); |
| 1179 | clear_c0_status(STATUSF_IP4); |
| 1180 | } |
| 1181 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1182 | static void octeon_irq_setup_secondary_ciu2(void) |
| 1183 | { |
| 1184 | octeon_irq_init_ciu2_percpu(); |
| 1185 | octeon_irq_percpu_enable(); |
| 1186 | |
| 1187 | /* Enable the CIU lines */ |
| 1188 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); |
| 1189 | if (octeon_irq_use_ip4) |
| 1190 | set_c0_status(STATUSF_IP4); |
| 1191 | else |
| 1192 | clear_c0_status(STATUSF_IP4); |
| 1193 | } |
| 1194 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1195 | static void __init octeon_irq_init_ciu(void) |
| 1196 | { |
| 1197 | unsigned int i; |
| 1198 | struct irq_chip *chip; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1199 | struct irq_chip *chip_mbox; |
| 1200 | struct irq_chip *chip_wd; |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1201 | struct device_node *gpio_node; |
| 1202 | struct device_node *ciu_node; |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1203 | struct irq_domain *ciu_domain = NULL; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1204 | |
| 1205 | octeon_irq_init_ciu_percpu(); |
| 1206 | octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu; |
| 1207 | |
David Daney | 1a7e68f | 2012-04-05 10:24:25 -0700 | [diff] [blame] | 1208 | octeon_irq_ip2 = octeon_irq_ip2_ciu; |
| 1209 | octeon_irq_ip3 = octeon_irq_ip3_ciu; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1210 | if (OCTEON_IS_MODEL(OCTEON_CN58XX_PASS2_X) || |
| 1211 | OCTEON_IS_MODEL(OCTEON_CN56XX_PASS2_X) || |
| 1212 | OCTEON_IS_MODEL(OCTEON_CN52XX_PASS2_X) || |
| 1213 | OCTEON_IS_MODEL(OCTEON_CN6XXX)) { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1214 | chip = &octeon_irq_chip_ciu_v2; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1215 | chip_mbox = &octeon_irq_chip_ciu_mbox_v2; |
| 1216 | chip_wd = &octeon_irq_chip_ciu_wd_v2; |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1217 | octeon_irq_gpio_chip = &octeon_irq_chip_ciu_gpio_v2; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1218 | } else { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1219 | chip = &octeon_irq_chip_ciu; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1220 | chip_mbox = &octeon_irq_chip_ciu_mbox; |
| 1221 | chip_wd = &octeon_irq_chip_ciu_wd; |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1222 | octeon_irq_gpio_chip = &octeon_irq_chip_ciu_gpio; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1223 | } |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1224 | octeon_irq_ciu_chip = chip; |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1225 | octeon_irq_ip4 = octeon_irq_ip4_mask; |
| 1226 | |
| 1227 | /* Mips internal */ |
| 1228 | octeon_irq_init_core(); |
| 1229 | |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1230 | gpio_node = of_find_compatible_node(NULL, NULL, "cavium,octeon-3860-gpio"); |
| 1231 | if (gpio_node) { |
| 1232 | struct octeon_irq_gpio_domain_data *gpiod; |
| 1233 | |
| 1234 | gpiod = kzalloc(sizeof(*gpiod), GFP_KERNEL); |
| 1235 | if (gpiod) { |
| 1236 | /* gpio domain host_data is the base hwirq number. */ |
| 1237 | gpiod->base_hwirq = 16; |
| 1238 | irq_domain_add_linear(gpio_node, 16, &octeon_irq_domain_gpio_ops, gpiod); |
| 1239 | of_node_put(gpio_node); |
| 1240 | } else |
| 1241 | pr_warn("Cannot allocate memory for GPIO irq_domain.\n"); |
| 1242 | } else |
| 1243 | pr_warn("Cannot find device node for cavium,octeon-3860-gpio.\n"); |
| 1244 | |
| 1245 | ciu_node = of_find_compatible_node(NULL, NULL, "cavium,octeon-3860-ciu"); |
| 1246 | if (ciu_node) { |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1247 | ciu_domain = irq_domain_add_tree(ciu_node, &octeon_irq_domain_ciu_ops, NULL); |
David Daney | c9f0f0c0 | 2012-08-29 16:09:22 -0700 | [diff] [blame] | 1248 | irq_set_default_host(ciu_domain); |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1249 | of_node_put(ciu_node); |
| 1250 | } else |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1251 | panic("Cannot find device node for cavium,octeon-3860-ciu."); |
| 1252 | |
| 1253 | /* CIU_0 */ |
| 1254 | for (i = 0; i < 16; i++) |
| 1255 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i + 0); |
| 1256 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1257 | octeon_irq_set_ciu_mapping(OCTEON_IRQ_MBOX0, 0, 32, 0, chip_mbox, handle_percpu_irq); |
| 1258 | octeon_irq_set_ciu_mapping(OCTEON_IRQ_MBOX1, 0, 33, 0, chip_mbox, handle_percpu_irq); |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1259 | |
| 1260 | for (i = 0; i < 4; i++) |
| 1261 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_PCI_INT0, 0, i + 36); |
| 1262 | for (i = 0; i < 4; i++) |
| 1263 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_PCI_MSI0, 0, i + 40); |
| 1264 | |
Eunbong Song | a53825e | 2014-04-22 06:16:15 +0000 | [diff] [blame] | 1265 | octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_TWSI, 0, 45); |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1266 | octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_RML, 0, 46); |
| 1267 | for (i = 0; i < 4; i++) |
| 1268 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_TIMER0, 0, i + 52); |
| 1269 | |
| 1270 | octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB0, 0, 56); |
Eunbong Song | a53825e | 2014-04-22 06:16:15 +0000 | [diff] [blame] | 1271 | octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_TWSI2, 0, 59); |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1272 | |
| 1273 | /* CIU_1 */ |
| 1274 | for (i = 0; i < 16; i++) |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1275 | octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_WDOG0, 1, i + 0, 0, chip_wd, handle_level_irq); |
David Daney | 87161cc | 2012-08-10 16:00:31 -0700 | [diff] [blame] | 1276 | |
| 1277 | octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB1, 1, 17); |
David Daney | a0c1658 | 2012-07-05 18:12:39 +0200 | [diff] [blame] | 1278 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1279 | /* Enable the CIU lines */ |
| 1280 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); |
| 1281 | clear_c0_status(STATUSF_IP4); |
| 1282 | } |
David Daney | 5aae1fd | 2010-07-23 10:43:46 -0700 | [diff] [blame] | 1283 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1284 | /* |
| 1285 | * Watchdog interrupts are special. They are associated with a single |
| 1286 | * core, so we hardwire the affinity to that core. |
| 1287 | */ |
| 1288 | static void octeon_irq_ciu2_wd_enable(struct irq_data *data) |
| 1289 | { |
| 1290 | u64 mask; |
| 1291 | u64 en_addr; |
| 1292 | int coreid = data->irq - OCTEON_IRQ_WDOG0; |
| 1293 | union octeon_ciu_chip_data cd; |
| 1294 | |
| 1295 | cd.p = irq_data_get_irq_chip_data(data); |
| 1296 | mask = 1ull << (cd.s.bit); |
| 1297 | |
| 1298 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + (0x1000ull * cd.s.line); |
| 1299 | cvmx_write_csr(en_addr, mask); |
| 1300 | |
| 1301 | } |
| 1302 | |
| 1303 | static void octeon_irq_ciu2_enable(struct irq_data *data) |
| 1304 | { |
| 1305 | u64 mask; |
| 1306 | u64 en_addr; |
| 1307 | int cpu = next_cpu_for_irq(data); |
| 1308 | int coreid = octeon_coreid_for_cpu(cpu); |
| 1309 | union octeon_ciu_chip_data cd; |
| 1310 | |
| 1311 | cd.p = irq_data_get_irq_chip_data(data); |
| 1312 | mask = 1ull << (cd.s.bit); |
| 1313 | |
| 1314 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + (0x1000ull * cd.s.line); |
| 1315 | cvmx_write_csr(en_addr, mask); |
| 1316 | } |
| 1317 | |
| 1318 | static void octeon_irq_ciu2_enable_local(struct irq_data *data) |
| 1319 | { |
| 1320 | u64 mask; |
| 1321 | u64 en_addr; |
| 1322 | int coreid = cvmx_get_core_num(); |
| 1323 | union octeon_ciu_chip_data cd; |
| 1324 | |
| 1325 | cd.p = irq_data_get_irq_chip_data(data); |
| 1326 | mask = 1ull << (cd.s.bit); |
| 1327 | |
| 1328 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + (0x1000ull * cd.s.line); |
| 1329 | cvmx_write_csr(en_addr, mask); |
| 1330 | |
| 1331 | } |
| 1332 | |
| 1333 | static void octeon_irq_ciu2_disable_local(struct irq_data *data) |
| 1334 | { |
| 1335 | u64 mask; |
| 1336 | u64 en_addr; |
| 1337 | int coreid = cvmx_get_core_num(); |
| 1338 | union octeon_ciu_chip_data cd; |
| 1339 | |
| 1340 | cd.p = irq_data_get_irq_chip_data(data); |
| 1341 | mask = 1ull << (cd.s.bit); |
| 1342 | |
| 1343 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(coreid) + (0x1000ull * cd.s.line); |
| 1344 | cvmx_write_csr(en_addr, mask); |
| 1345 | |
| 1346 | } |
| 1347 | |
| 1348 | static void octeon_irq_ciu2_ack(struct irq_data *data) |
| 1349 | { |
| 1350 | u64 mask; |
| 1351 | u64 en_addr; |
| 1352 | int coreid = cvmx_get_core_num(); |
| 1353 | union octeon_ciu_chip_data cd; |
| 1354 | |
| 1355 | cd.p = irq_data_get_irq_chip_data(data); |
| 1356 | mask = 1ull << (cd.s.bit); |
| 1357 | |
| 1358 | en_addr = CVMX_CIU2_RAW_PPX_IP2_WRKQ(coreid) + (0x1000ull * cd.s.line); |
| 1359 | cvmx_write_csr(en_addr, mask); |
| 1360 | |
| 1361 | } |
| 1362 | |
| 1363 | static void octeon_irq_ciu2_disable_all(struct irq_data *data) |
| 1364 | { |
| 1365 | int cpu; |
| 1366 | u64 mask; |
| 1367 | union octeon_ciu_chip_data cd; |
| 1368 | |
| 1369 | cd.p = irq_data_get_irq_chip_data(data); |
| 1370 | mask = 1ull << (cd.s.bit); |
| 1371 | |
| 1372 | for_each_online_cpu(cpu) { |
| 1373 | u64 en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd.s.line); |
| 1374 | cvmx_write_csr(en_addr, mask); |
| 1375 | } |
| 1376 | } |
| 1377 | |
| 1378 | static void octeon_irq_ciu2_mbox_enable_all(struct irq_data *data) |
| 1379 | { |
| 1380 | int cpu; |
| 1381 | u64 mask; |
| 1382 | |
| 1383 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); |
| 1384 | |
| 1385 | for_each_online_cpu(cpu) { |
| 1386 | u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S(octeon_coreid_for_cpu(cpu)); |
| 1387 | cvmx_write_csr(en_addr, mask); |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | static void octeon_irq_ciu2_mbox_disable_all(struct irq_data *data) |
| 1392 | { |
| 1393 | int cpu; |
| 1394 | u64 mask; |
| 1395 | |
| 1396 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); |
| 1397 | |
| 1398 | for_each_online_cpu(cpu) { |
| 1399 | u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C(octeon_coreid_for_cpu(cpu)); |
| 1400 | cvmx_write_csr(en_addr, mask); |
| 1401 | } |
| 1402 | } |
| 1403 | |
| 1404 | static void octeon_irq_ciu2_mbox_enable_local(struct irq_data *data) |
| 1405 | { |
| 1406 | u64 mask; |
| 1407 | u64 en_addr; |
| 1408 | int coreid = cvmx_get_core_num(); |
| 1409 | |
| 1410 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); |
| 1411 | en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S(coreid); |
| 1412 | cvmx_write_csr(en_addr, mask); |
| 1413 | } |
| 1414 | |
| 1415 | static void octeon_irq_ciu2_mbox_disable_local(struct irq_data *data) |
| 1416 | { |
| 1417 | u64 mask; |
| 1418 | u64 en_addr; |
| 1419 | int coreid = cvmx_get_core_num(); |
| 1420 | |
| 1421 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); |
| 1422 | en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C(coreid); |
| 1423 | cvmx_write_csr(en_addr, mask); |
| 1424 | } |
| 1425 | |
| 1426 | #ifdef CONFIG_SMP |
| 1427 | static int octeon_irq_ciu2_set_affinity(struct irq_data *data, |
| 1428 | const struct cpumask *dest, bool force) |
| 1429 | { |
| 1430 | int cpu; |
| 1431 | bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data); |
| 1432 | u64 mask; |
| 1433 | union octeon_ciu_chip_data cd; |
| 1434 | |
| 1435 | if (!enable_one) |
| 1436 | return 0; |
| 1437 | |
| 1438 | cd.p = irq_data_get_irq_chip_data(data); |
| 1439 | mask = 1ull << cd.s.bit; |
| 1440 | |
| 1441 | for_each_online_cpu(cpu) { |
| 1442 | u64 en_addr; |
| 1443 | if (cpumask_test_cpu(cpu, dest) && enable_one) { |
| 1444 | enable_one = false; |
| 1445 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd.s.line); |
| 1446 | } else { |
| 1447 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd.s.line); |
| 1448 | } |
| 1449 | cvmx_write_csr(en_addr, mask); |
| 1450 | } |
| 1451 | |
| 1452 | return 0; |
| 1453 | } |
| 1454 | #endif |
| 1455 | |
| 1456 | static void octeon_irq_ciu2_enable_gpio(struct irq_data *data) |
| 1457 | { |
| 1458 | octeon_irq_gpio_setup(data); |
| 1459 | octeon_irq_ciu2_enable(data); |
| 1460 | } |
| 1461 | |
| 1462 | static void octeon_irq_ciu2_disable_gpio(struct irq_data *data) |
| 1463 | { |
| 1464 | union octeon_ciu_chip_data cd; |
| 1465 | cd.p = irq_data_get_irq_chip_data(data); |
| 1466 | |
| 1467 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd.s.gpio_line), 0); |
| 1468 | |
| 1469 | octeon_irq_ciu2_disable_all(data); |
| 1470 | } |
| 1471 | |
| 1472 | static struct irq_chip octeon_irq_chip_ciu2 = { |
| 1473 | .name = "CIU2-E", |
| 1474 | .irq_enable = octeon_irq_ciu2_enable, |
| 1475 | .irq_disable = octeon_irq_ciu2_disable_all, |
| 1476 | .irq_ack = octeon_irq_ciu2_ack, |
| 1477 | .irq_mask = octeon_irq_ciu2_disable_local, |
| 1478 | .irq_unmask = octeon_irq_ciu2_enable, |
| 1479 | #ifdef CONFIG_SMP |
| 1480 | .irq_set_affinity = octeon_irq_ciu2_set_affinity, |
| 1481 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
| 1482 | #endif |
| 1483 | }; |
| 1484 | |
| 1485 | static struct irq_chip octeon_irq_chip_ciu2_mbox = { |
| 1486 | .name = "CIU2-M", |
| 1487 | .irq_enable = octeon_irq_ciu2_mbox_enable_all, |
| 1488 | .irq_disable = octeon_irq_ciu2_mbox_disable_all, |
| 1489 | .irq_ack = octeon_irq_ciu2_mbox_disable_local, |
| 1490 | .irq_eoi = octeon_irq_ciu2_mbox_enable_local, |
| 1491 | |
| 1492 | .irq_cpu_online = octeon_irq_ciu2_mbox_enable_local, |
| 1493 | .irq_cpu_offline = octeon_irq_ciu2_mbox_disable_local, |
| 1494 | .flags = IRQCHIP_ONOFFLINE_ENABLED, |
| 1495 | }; |
| 1496 | |
| 1497 | static struct irq_chip octeon_irq_chip_ciu2_wd = { |
| 1498 | .name = "CIU2-W", |
| 1499 | .irq_enable = octeon_irq_ciu2_wd_enable, |
| 1500 | .irq_disable = octeon_irq_ciu2_disable_all, |
| 1501 | .irq_mask = octeon_irq_ciu2_disable_local, |
| 1502 | .irq_unmask = octeon_irq_ciu2_enable_local, |
| 1503 | }; |
| 1504 | |
| 1505 | static struct irq_chip octeon_irq_chip_ciu2_gpio = { |
| 1506 | .name = "CIU-GPIO", |
| 1507 | .irq_enable = octeon_irq_ciu2_enable_gpio, |
| 1508 | .irq_disable = octeon_irq_ciu2_disable_gpio, |
| 1509 | .irq_ack = octeon_irq_ciu_gpio_ack, |
| 1510 | .irq_mask = octeon_irq_ciu2_disable_local, |
| 1511 | .irq_unmask = octeon_irq_ciu2_enable, |
| 1512 | .irq_set_type = octeon_irq_ciu_gpio_set_type, |
| 1513 | #ifdef CONFIG_SMP |
| 1514 | .irq_set_affinity = octeon_irq_ciu2_set_affinity, |
| 1515 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
| 1516 | #endif |
| 1517 | .flags = IRQCHIP_SET_TYPE_MASKED, |
| 1518 | }; |
| 1519 | |
| 1520 | static int octeon_irq_ciu2_xlat(struct irq_domain *d, |
| 1521 | struct device_node *node, |
| 1522 | const u32 *intspec, |
| 1523 | unsigned int intsize, |
| 1524 | unsigned long *out_hwirq, |
| 1525 | unsigned int *out_type) |
| 1526 | { |
| 1527 | unsigned int ciu, bit; |
| 1528 | |
| 1529 | ciu = intspec[0]; |
| 1530 | bit = intspec[1]; |
| 1531 | |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1532 | *out_hwirq = (ciu << 6) | bit; |
| 1533 | *out_type = 0; |
| 1534 | |
| 1535 | return 0; |
| 1536 | } |
| 1537 | |
| 1538 | static bool octeon_irq_ciu2_is_edge(unsigned int line, unsigned int bit) |
| 1539 | { |
| 1540 | bool edge = false; |
| 1541 | |
| 1542 | if (line == 3) /* MIO */ |
| 1543 | switch (bit) { |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 1544 | case 2: /* IPD_DRP */ |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1545 | case 8 ... 11: /* Timers */ |
| 1546 | case 48: /* PTP */ |
| 1547 | edge = true; |
| 1548 | break; |
| 1549 | default: |
| 1550 | break; |
| 1551 | } |
| 1552 | else if (line == 6) /* PKT */ |
| 1553 | switch (bit) { |
| 1554 | case 52 ... 53: /* ILK_DRP */ |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 1555 | case 8 ... 12: /* GMX_DRP */ |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1556 | edge = true; |
| 1557 | break; |
| 1558 | default: |
| 1559 | break; |
| 1560 | } |
| 1561 | return edge; |
| 1562 | } |
| 1563 | |
| 1564 | static int octeon_irq_ciu2_map(struct irq_domain *d, |
| 1565 | unsigned int virq, irq_hw_number_t hw) |
| 1566 | { |
| 1567 | unsigned int line = hw >> 6; |
| 1568 | unsigned int bit = hw & 63; |
| 1569 | |
| 1570 | if (!octeon_irq_virq_in_range(virq)) |
| 1571 | return -EINVAL; |
| 1572 | |
Andreas Herrmann | 2eddb70 | 2014-03-19 23:03:30 +0100 | [diff] [blame] | 1573 | /* |
| 1574 | * Don't map irq if it is reserved for GPIO. |
| 1575 | * (Line 7 are the GPIO lines.) |
| 1576 | */ |
| 1577 | if (line == 7) |
| 1578 | return 0; |
| 1579 | |
| 1580 | if (line > 7 || octeon_irq_ciu_to_irq[line][bit] != 0) |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1581 | return -EINVAL; |
| 1582 | |
| 1583 | if (octeon_irq_ciu2_is_edge(line, bit)) |
| 1584 | octeon_irq_set_ciu_mapping(virq, line, bit, 0, |
| 1585 | &octeon_irq_chip_ciu2, |
| 1586 | handle_edge_irq); |
| 1587 | else |
| 1588 | octeon_irq_set_ciu_mapping(virq, line, bit, 0, |
| 1589 | &octeon_irq_chip_ciu2, |
| 1590 | handle_level_irq); |
| 1591 | |
| 1592 | return 0; |
| 1593 | } |
| 1594 | static int octeon_irq_ciu2_gpio_map(struct irq_domain *d, |
| 1595 | unsigned int virq, irq_hw_number_t hw) |
| 1596 | { |
| 1597 | return octeon_irq_gpio_map_common(d, virq, hw, 7, &octeon_irq_chip_ciu2_gpio); |
| 1598 | } |
| 1599 | |
| 1600 | static struct irq_domain_ops octeon_irq_domain_ciu2_ops = { |
| 1601 | .map = octeon_irq_ciu2_map, |
| 1602 | .xlate = octeon_irq_ciu2_xlat, |
| 1603 | }; |
| 1604 | |
| 1605 | static struct irq_domain_ops octeon_irq_domain_ciu2_gpio_ops = { |
| 1606 | .map = octeon_irq_ciu2_gpio_map, |
| 1607 | .xlate = octeon_irq_gpio_xlat, |
| 1608 | }; |
| 1609 | |
| 1610 | static void octeon_irq_ciu2(void) |
| 1611 | { |
| 1612 | int line; |
| 1613 | int bit; |
| 1614 | int irq; |
| 1615 | u64 src_reg, src, sum; |
| 1616 | const unsigned long core_id = cvmx_get_core_num(); |
| 1617 | |
| 1618 | sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(core_id)) & 0xfful; |
| 1619 | |
| 1620 | if (unlikely(!sum)) |
| 1621 | goto spurious; |
| 1622 | |
| 1623 | line = fls64(sum) - 1; |
| 1624 | src_reg = CVMX_CIU2_SRC_PPX_IP2_WRKQ(core_id) + (0x1000 * line); |
| 1625 | src = cvmx_read_csr(src_reg); |
| 1626 | |
| 1627 | if (unlikely(!src)) |
| 1628 | goto spurious; |
| 1629 | |
| 1630 | bit = fls64(src) - 1; |
| 1631 | irq = octeon_irq_ciu_to_irq[line][bit]; |
| 1632 | if (unlikely(!irq)) |
| 1633 | goto spurious; |
| 1634 | |
| 1635 | do_IRQ(irq); |
| 1636 | goto out; |
| 1637 | |
| 1638 | spurious: |
| 1639 | spurious_interrupt(); |
| 1640 | out: |
| 1641 | /* CN68XX pass 1.x has an errata that accessing the ACK registers |
| 1642 | can stop interrupts from propagating */ |
| 1643 | if (OCTEON_IS_MODEL(OCTEON_CN68XX)) |
| 1644 | cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY); |
| 1645 | else |
| 1646 | cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP2(core_id)); |
| 1647 | return; |
| 1648 | } |
| 1649 | |
| 1650 | static void octeon_irq_ciu2_mbox(void) |
| 1651 | { |
| 1652 | int line; |
| 1653 | |
| 1654 | const unsigned long core_id = cvmx_get_core_num(); |
| 1655 | u64 sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP3(core_id)) >> 60; |
| 1656 | |
| 1657 | if (unlikely(!sum)) |
| 1658 | goto spurious; |
| 1659 | |
| 1660 | line = fls64(sum) - 1; |
| 1661 | |
| 1662 | do_IRQ(OCTEON_IRQ_MBOX0 + line); |
| 1663 | goto out; |
| 1664 | |
| 1665 | spurious: |
| 1666 | spurious_interrupt(); |
| 1667 | out: |
| 1668 | /* CN68XX pass 1.x has an errata that accessing the ACK registers |
| 1669 | can stop interrupts from propagating */ |
| 1670 | if (OCTEON_IS_MODEL(OCTEON_CN68XX)) |
| 1671 | cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY); |
| 1672 | else |
| 1673 | cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP3(core_id)); |
| 1674 | return; |
| 1675 | } |
| 1676 | |
| 1677 | static void __init octeon_irq_init_ciu2(void) |
| 1678 | { |
| 1679 | unsigned int i; |
| 1680 | struct device_node *gpio_node; |
| 1681 | struct device_node *ciu_node; |
| 1682 | struct irq_domain *ciu_domain = NULL; |
| 1683 | |
| 1684 | octeon_irq_init_ciu2_percpu(); |
| 1685 | octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu2; |
| 1686 | |
| 1687 | octeon_irq_ip2 = octeon_irq_ciu2; |
| 1688 | octeon_irq_ip3 = octeon_irq_ciu2_mbox; |
| 1689 | octeon_irq_ip4 = octeon_irq_ip4_mask; |
| 1690 | |
| 1691 | /* Mips internal */ |
| 1692 | octeon_irq_init_core(); |
| 1693 | |
| 1694 | gpio_node = of_find_compatible_node(NULL, NULL, "cavium,octeon-3860-gpio"); |
| 1695 | if (gpio_node) { |
| 1696 | struct octeon_irq_gpio_domain_data *gpiod; |
| 1697 | |
| 1698 | gpiod = kzalloc(sizeof(*gpiod), GFP_KERNEL); |
| 1699 | if (gpiod) { |
| 1700 | /* gpio domain host_data is the base hwirq number. */ |
| 1701 | gpiod->base_hwirq = 7 << 6; |
| 1702 | irq_domain_add_linear(gpio_node, 16, &octeon_irq_domain_ciu2_gpio_ops, gpiod); |
| 1703 | of_node_put(gpio_node); |
| 1704 | } else |
| 1705 | pr_warn("Cannot allocate memory for GPIO irq_domain.\n"); |
| 1706 | } else |
| 1707 | pr_warn("Cannot find device node for cavium,octeon-3860-gpio.\n"); |
| 1708 | |
| 1709 | ciu_node = of_find_compatible_node(NULL, NULL, "cavium,octeon-6880-ciu2"); |
| 1710 | if (ciu_node) { |
| 1711 | ciu_domain = irq_domain_add_tree(ciu_node, &octeon_irq_domain_ciu2_ops, NULL); |
David Daney | c9f0f0c0 | 2012-08-29 16:09:22 -0700 | [diff] [blame] | 1712 | irq_set_default_host(ciu_domain); |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1713 | of_node_put(ciu_node); |
| 1714 | } else |
| 1715 | panic("Cannot find device node for cavium,octeon-6880-ciu2."); |
| 1716 | |
| 1717 | /* CUI2 */ |
| 1718 | for (i = 0; i < 64; i++) |
| 1719 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i); |
| 1720 | |
| 1721 | for (i = 0; i < 32; i++) |
| 1722 | octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_WDOG0, 1, i, 0, |
| 1723 | &octeon_irq_chip_ciu2_wd, handle_level_irq); |
| 1724 | |
| 1725 | for (i = 0; i < 4; i++) |
| 1726 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_TIMER0, 3, i + 8); |
| 1727 | |
| 1728 | octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB0, 3, 44); |
| 1729 | |
| 1730 | for (i = 0; i < 4; i++) |
| 1731 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_PCI_INT0, 4, i); |
| 1732 | |
| 1733 | for (i = 0; i < 4; i++) |
| 1734 | octeon_irq_force_ciu_mapping(ciu_domain, i + OCTEON_IRQ_PCI_MSI0, 4, i + 8); |
| 1735 | |
| 1736 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX0, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); |
| 1737 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX1, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); |
| 1738 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX2, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); |
| 1739 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX3, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); |
| 1740 | |
| 1741 | /* Enable the CIU lines */ |
| 1742 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); |
| 1743 | clear_c0_status(STATUSF_IP4); |
| 1744 | } |
| 1745 | |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1746 | void __init arch_init_irq(void) |
| 1747 | { |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1748 | #ifdef CONFIG_SMP |
| 1749 | /* Set the default affinity to the boot cpu. */ |
| 1750 | cpumask_clear(irq_default_affinity); |
| 1751 | cpumask_set_cpu(smp_processor_id(), irq_default_affinity); |
| 1752 | #endif |
David Daney | 88fd858 | 2012-04-04 15:34:41 -0700 | [diff] [blame] | 1753 | if (OCTEON_IS_MODEL(OCTEON_CN68XX)) |
| 1754 | octeon_irq_init_ciu2(); |
| 1755 | else |
| 1756 | octeon_irq_init_ciu(); |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1757 | } |
| 1758 | |
| 1759 | asmlinkage void plat_irq_dispatch(void) |
| 1760 | { |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1761 | unsigned long cop0_cause; |
| 1762 | unsigned long cop0_status; |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1763 | |
| 1764 | while (1) { |
| 1765 | cop0_cause = read_c0_cause(); |
| 1766 | cop0_status = read_c0_status(); |
| 1767 | cop0_cause &= cop0_status; |
| 1768 | cop0_cause &= ST0_IM; |
| 1769 | |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1770 | if (unlikely(cop0_cause & STATUSF_IP2)) |
| 1771 | octeon_irq_ip2(); |
| 1772 | else if (unlikely(cop0_cause & STATUSF_IP3)) |
| 1773 | octeon_irq_ip3(); |
| 1774 | else if (unlikely(cop0_cause & STATUSF_IP4)) |
| 1775 | octeon_irq_ip4(); |
| 1776 | else if (likely(cop0_cause)) |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1777 | do_IRQ(fls(cop0_cause) - 9 + MIPS_CPU_IRQ_BASE); |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1778 | else |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1779 | break; |
David Daney | 5b3b168 | 2009-01-08 16:46:40 -0800 | [diff] [blame] | 1780 | } |
| 1781 | } |
Ralf Baechle | 773cb77 | 2009-06-23 10:36:38 +0100 | [diff] [blame] | 1782 | |
| 1783 | #ifdef CONFIG_HOTPLUG_CPU |
Ralf Baechle | 773cb77 | 2009-06-23 10:36:38 +0100 | [diff] [blame] | 1784 | |
Ralf Baechle | 17efb59 | 2013-09-03 18:19:28 +0200 | [diff] [blame] | 1785 | void octeon_fixup_irqs(void) |
Ralf Baechle | 773cb77 | 2009-06-23 10:36:38 +0100 | [diff] [blame] | 1786 | { |
David Daney | 0c32638 | 2011-03-25 12:38:51 -0700 | [diff] [blame] | 1787 | irq_cpu_offline(); |
Ralf Baechle | 773cb77 | 2009-06-23 10:36:38 +0100 | [diff] [blame] | 1788 | } |
| 1789 | |
| 1790 | #endif /* CONFIG_HOTPLUG_CPU */ |