Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 1 | /* |
| 2 | * PS3 interrupt routines. |
| 3 | * |
| 4 | * Copyright (C) 2006 Sony Computer Entertainment Inc. |
| 5 | * Copyright 2006 Sony Corp. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/irq.h> |
| 24 | |
| 25 | #include <asm/machdep.h> |
| 26 | #include <asm/udbg.h> |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 27 | #include <asm/lv1call.h> |
Stephen Rothwell | 42d284bc | 2007-05-28 10:19:08 +1000 | [diff] [blame] | 28 | #include <asm/smp.h> |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 29 | |
| 30 | #include "platform.h" |
| 31 | |
| 32 | #if defined(DEBUG) |
Geert Uytterhoeven | 83bb643 | 2007-06-16 07:19:23 +1000 | [diff] [blame] | 33 | #define DBG udbg_printf |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 34 | #else |
Geert Uytterhoeven | 83bb643 | 2007-06-16 07:19:23 +1000 | [diff] [blame] | 35 | #define DBG pr_debug |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 36 | #endif |
| 37 | |
| 38 | /** |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 39 | * struct ps3_bmp - a per cpu irq status and mask bitmap structure |
| 40 | * @status: 256 bit status bitmap indexed by plug |
| 41 | * @unused_1: |
| 42 | * @mask: 256 bit mask bitmap indexed by plug |
| 43 | * @unused_2: |
| 44 | * @lock: |
| 45 | * @ipi_debug_brk_mask: |
| 46 | * |
| 47 | * The HV mantains per SMT thread mappings of HV outlet to HV plug on |
| 48 | * behalf of the guest. These mappings are implemented as 256 bit guest |
| 49 | * supplied bitmaps indexed by plug number. The addresses of the bitmaps |
| 50 | * are registered with the HV through lv1_configure_irq_state_bitmap(). |
Geoff Levand | 5771576 | 2007-01-26 19:08:16 -0800 | [diff] [blame] | 51 | * The HV requires that the 512 bits of status + mask not cross a page |
| 52 | * boundary. PS3_BMP_MINALIGN is used to define this minimal 64 byte |
| 53 | * alignment. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 54 | * |
| 55 | * The HV supports 256 plugs per thread, assigned as {0..255}, for a total |
| 56 | * of 512 plugs supported on a processor. To simplify the logic this |
| 57 | * implementation equates HV plug value to Linux virq value, constrains each |
| 58 | * interrupt to have a system wide unique plug number, and limits the range |
| 59 | * of the plug values to map into the first dword of the bitmaps. This |
| 60 | * gives a usable range of plug values of {NUM_ISA_INTERRUPTS..63}. Note |
| 61 | * that there is no constraint on how many in this set an individual thread |
| 62 | * can acquire. |
| 63 | */ |
| 64 | |
Geoff Levand | 5771576 | 2007-01-26 19:08:16 -0800 | [diff] [blame] | 65 | #define PS3_BMP_MINALIGN 64 |
| 66 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 67 | struct ps3_bmp { |
| 68 | struct { |
| 69 | u64 status; |
| 70 | u64 unused_1[3]; |
| 71 | u64 mask; |
| 72 | u64 unused_2[3]; |
| 73 | }; |
| 74 | u64 ipi_debug_brk_mask; |
| 75 | spinlock_t lock; |
| 76 | }; |
| 77 | |
| 78 | /** |
| 79 | * struct ps3_private - a per cpu data structure |
| 80 | * @bmp: ps3_bmp structure |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 81 | * @ppe_id: HV logical_ppe_id |
| 82 | * @thread_id: HV thread_id |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 83 | */ |
| 84 | |
| 85 | struct ps3_private { |
Geoff Levand | 5771576 | 2007-01-26 19:08:16 -0800 | [diff] [blame] | 86 | struct ps3_bmp bmp __attribute__ ((aligned (PS3_BMP_MINALIGN))); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 87 | u64 ppe_id; |
| 88 | u64 thread_id; |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 89 | }; |
| 90 | |
| 91 | static DEFINE_PER_CPU(struct ps3_private, ps3_private); |
| 92 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 93 | /** |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 94 | * ps3_chip_mask - Set an interrupt mask bit in ps3_bmp. |
| 95 | * @virq: The assigned Linux virq. |
| 96 | * |
| 97 | * Sets ps3_bmp.mask and calls lv1_did_update_interrupt_mask(). |
| 98 | */ |
| 99 | |
| 100 | static void ps3_chip_mask(unsigned int virq) |
| 101 | { |
| 102 | struct ps3_private *pd = get_irq_chip_data(virq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 103 | unsigned long flags; |
| 104 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 105 | pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__, |
| 106 | pd->thread_id, virq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 107 | |
| 108 | local_irq_save(flags); |
Geoff Levand | a354ab8 | 2007-06-16 08:06:09 +1000 | [diff] [blame] | 109 | clear_bit(63 - virq, &pd->bmp.mask); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 110 | lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 111 | local_irq_restore(flags); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * ps3_chip_unmask - Clear an interrupt mask bit in ps3_bmp. |
| 116 | * @virq: The assigned Linux virq. |
| 117 | * |
| 118 | * Clears ps3_bmp.mask and calls lv1_did_update_interrupt_mask(). |
| 119 | */ |
| 120 | |
| 121 | static void ps3_chip_unmask(unsigned int virq) |
| 122 | { |
| 123 | struct ps3_private *pd = get_irq_chip_data(virq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 124 | unsigned long flags; |
| 125 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 126 | pr_debug("%s:%d: thread_id %lu, virq %d\n", __func__, __LINE__, |
| 127 | pd->thread_id, virq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 128 | |
| 129 | local_irq_save(flags); |
Geoff Levand | a354ab8 | 2007-06-16 08:06:09 +1000 | [diff] [blame] | 130 | set_bit(63 - virq, &pd->bmp.mask); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 131 | lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 132 | local_irq_restore(flags); |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * ps3_chip_eoi - HV end-of-interrupt. |
| 137 | * @virq: The assigned Linux virq. |
| 138 | * |
| 139 | * Calls lv1_end_of_interrupt_ext(). |
| 140 | */ |
| 141 | |
| 142 | static void ps3_chip_eoi(unsigned int virq) |
| 143 | { |
| 144 | const struct ps3_private *pd = get_irq_chip_data(virq); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 145 | lv1_end_of_interrupt_ext(pd->ppe_id, pd->thread_id, virq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | /** |
| 149 | * ps3_irq_chip - Represents the ps3_bmp as a Linux struct irq_chip. |
| 150 | */ |
| 151 | |
| 152 | static struct irq_chip ps3_irq_chip = { |
| 153 | .typename = "ps3", |
| 154 | .mask = ps3_chip_mask, |
| 155 | .unmask = ps3_chip_unmask, |
| 156 | .eoi = ps3_chip_eoi, |
| 157 | }; |
| 158 | |
| 159 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 160 | * ps3_virq_setup - virq related setup. |
| 161 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 162 | * serviced on. |
| 163 | * @outlet: The HV outlet from the various create outlet routines. |
| 164 | * @virq: The assigned Linux virq. |
| 165 | * |
| 166 | * Calls irq_create_mapping() to get a virq and sets the chip data to |
| 167 | * ps3_private data. |
| 168 | */ |
| 169 | |
| 170 | int ps3_virq_setup(enum ps3_cpu_binding cpu, unsigned long outlet, |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 171 | unsigned int *virq) |
| 172 | { |
| 173 | int result; |
| 174 | struct ps3_private *pd; |
| 175 | |
| 176 | /* This defines the default interrupt distribution policy. */ |
| 177 | |
| 178 | if (cpu == PS3_BINDING_CPU_ANY) |
| 179 | cpu = 0; |
| 180 | |
| 181 | pd = &per_cpu(ps3_private, cpu); |
| 182 | |
| 183 | *virq = irq_create_mapping(NULL, outlet); |
| 184 | |
| 185 | if (*virq == NO_IRQ) { |
| 186 | pr_debug("%s:%d: irq_create_mapping failed: outlet %lu\n", |
| 187 | __func__, __LINE__, outlet); |
| 188 | result = -ENOMEM; |
| 189 | goto fail_create; |
| 190 | } |
| 191 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 192 | pr_debug("%s:%d: outlet %lu => cpu %u, virq %u\n", __func__, __LINE__, |
| 193 | outlet, cpu, *virq); |
| 194 | |
| 195 | result = set_irq_chip_data(*virq, pd); |
| 196 | |
| 197 | if (result) { |
| 198 | pr_debug("%s:%d: set_irq_chip_data failed\n", |
| 199 | __func__, __LINE__); |
| 200 | goto fail_set; |
| 201 | } |
| 202 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 203 | ps3_chip_mask(*virq); |
| 204 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 205 | return result; |
| 206 | |
| 207 | fail_set: |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 208 | irq_dispose_mapping(*virq); |
| 209 | fail_create: |
| 210 | return result; |
| 211 | } |
| 212 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 213 | /** |
| 214 | * ps3_virq_destroy - virq related teardown. |
| 215 | * @virq: The assigned Linux virq. |
| 216 | * |
| 217 | * Clears chip data and calls irq_dispose_mapping() for the virq. |
| 218 | */ |
| 219 | |
| 220 | int ps3_virq_destroy(unsigned int virq) |
| 221 | { |
| 222 | const struct ps3_private *pd = get_irq_chip_data(virq); |
| 223 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 224 | pr_debug("%s:%d: ppe_id %lu, thread_id %lu, virq %u\n", __func__, |
| 225 | __LINE__, pd->ppe_id, pd->thread_id, virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 226 | |
| 227 | set_irq_chip_data(virq, NULL); |
| 228 | irq_dispose_mapping(virq); |
| 229 | |
| 230 | pr_debug("%s:%d <-\n", __func__, __LINE__); |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * ps3_irq_plug_setup - Generic outlet and virq related setup. |
| 236 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 237 | * serviced on. |
| 238 | * @outlet: The HV outlet from the various create outlet routines. |
| 239 | * @virq: The assigned Linux virq. |
| 240 | * |
| 241 | * Sets up virq and connects the irq plug. |
| 242 | */ |
| 243 | |
| 244 | int ps3_irq_plug_setup(enum ps3_cpu_binding cpu, unsigned long outlet, |
| 245 | unsigned int *virq) |
| 246 | { |
| 247 | int result; |
| 248 | struct ps3_private *pd; |
| 249 | |
| 250 | result = ps3_virq_setup(cpu, outlet, virq); |
| 251 | |
| 252 | if (result) { |
| 253 | pr_debug("%s:%d: ps3_virq_setup failed\n", __func__, __LINE__); |
| 254 | goto fail_setup; |
| 255 | } |
| 256 | |
| 257 | pd = get_irq_chip_data(*virq); |
| 258 | |
| 259 | /* Binds outlet to cpu + virq. */ |
| 260 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 261 | result = lv1_connect_irq_plug_ext(pd->ppe_id, pd->thread_id, *virq, |
| 262 | outlet, 0); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 263 | |
| 264 | if (result) { |
| 265 | pr_info("%s:%d: lv1_connect_irq_plug_ext failed: %s\n", |
| 266 | __func__, __LINE__, ps3_result(result)); |
| 267 | result = -EPERM; |
| 268 | goto fail_connect; |
| 269 | } |
| 270 | |
| 271 | return result; |
| 272 | |
| 273 | fail_connect: |
| 274 | ps3_virq_destroy(*virq); |
| 275 | fail_setup: |
| 276 | return result; |
| 277 | } |
| 278 | EXPORT_SYMBOL_GPL(ps3_irq_plug_setup); |
| 279 | |
| 280 | /** |
| 281 | * ps3_irq_plug_destroy - Generic outlet and virq related teardown. |
| 282 | * @virq: The assigned Linux virq. |
| 283 | * |
| 284 | * Disconnects the irq plug and tears down virq. |
| 285 | * Do not call for system bus event interrupts setup with |
| 286 | * ps3_sb_event_receive_port_setup(). |
| 287 | */ |
| 288 | |
| 289 | int ps3_irq_plug_destroy(unsigned int virq) |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 290 | { |
| 291 | int result; |
| 292 | const struct ps3_private *pd = get_irq_chip_data(virq); |
| 293 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 294 | pr_debug("%s:%d: ppe_id %lu, thread_id %lu, virq %u\n", __func__, |
| 295 | __LINE__, pd->ppe_id, pd->thread_id, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 296 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 297 | ps3_chip_mask(virq); |
| 298 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 299 | result = lv1_disconnect_irq_plug_ext(pd->ppe_id, pd->thread_id, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 300 | |
| 301 | if (result) |
| 302 | pr_info("%s:%d: lv1_disconnect_irq_plug_ext failed: %s\n", |
| 303 | __func__, __LINE__, ps3_result(result)); |
| 304 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 305 | ps3_virq_destroy(virq); |
| 306 | |
Geert Uytterhoeven | b1eeb38 | 2007-01-26 19:08:12 -0800 | [diff] [blame] | 307 | return result; |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 308 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 309 | EXPORT_SYMBOL_GPL(ps3_irq_plug_destroy); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 310 | |
| 311 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 312 | * ps3_event_receive_port_setup - Setup an event receive port. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 313 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 314 | * serviced on. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 315 | * @virq: The assigned Linux virq. |
| 316 | * |
| 317 | * The virq can be used with lv1_connect_interrupt_event_receive_port() to |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 318 | * arrange to receive interrupts from system-bus devices, or with |
| 319 | * ps3_send_event_locally() to signal events. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 320 | */ |
| 321 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 322 | int ps3_event_receive_port_setup(enum ps3_cpu_binding cpu, unsigned int *virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 323 | { |
| 324 | int result; |
| 325 | unsigned long outlet; |
| 326 | |
| 327 | result = lv1_construct_event_receive_port(&outlet); |
| 328 | |
| 329 | if (result) { |
| 330 | pr_debug("%s:%d: lv1_construct_event_receive_port failed: %s\n", |
| 331 | __func__, __LINE__, ps3_result(result)); |
| 332 | *virq = NO_IRQ; |
| 333 | return result; |
| 334 | } |
| 335 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 336 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 337 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 338 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 339 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 340 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 341 | EXPORT_SYMBOL_GPL(ps3_event_receive_port_setup); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 342 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 343 | /** |
| 344 | * ps3_event_receive_port_destroy - Destroy an event receive port. |
| 345 | * @virq: The assigned Linux virq. |
| 346 | * |
| 347 | * Since ps3_event_receive_port_destroy destroys the receive port outlet, |
| 348 | * SB devices need to call disconnect_interrupt_event_receive_port() before |
| 349 | * this. |
| 350 | */ |
| 351 | |
| 352 | int ps3_event_receive_port_destroy(unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 353 | { |
| 354 | int result; |
| 355 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 356 | pr_debug(" -> %s:%d virq %u\n", __func__, __LINE__, virq); |
| 357 | |
| 358 | ps3_chip_mask(virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 359 | |
| 360 | result = lv1_destruct_event_receive_port(virq_to_hw(virq)); |
| 361 | |
| 362 | if (result) |
| 363 | pr_debug("%s:%d: lv1_destruct_event_receive_port failed: %s\n", |
| 364 | __func__, __LINE__, ps3_result(result)); |
| 365 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 366 | /* |
| 367 | * Don't call ps3_virq_destroy() here since ps3_smp_cleanup_cpu() |
| 368 | * calls from interrupt context (smp_call_function) when kexecing. |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 369 | */ |
| 370 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 371 | pr_debug(" <- %s:%d\n", __func__, __LINE__); |
| 372 | return result; |
| 373 | } |
| 374 | |
| 375 | int ps3_send_event_locally(unsigned int virq) |
| 376 | { |
| 377 | return lv1_send_event_locally(virq_to_hw(virq)); |
| 378 | } |
| 379 | |
| 380 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 381 | * ps3_sb_event_receive_port_setup - Setup a system bus event receive port. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 382 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 383 | * serviced on. |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 384 | * @dev: The system bus device instance. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 385 | * @virq: The assigned Linux virq. |
| 386 | * |
| 387 | * An event irq represents a virtual device interrupt. The interrupt_id |
| 388 | * coresponds to the software interrupt number. |
| 389 | */ |
| 390 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 391 | int ps3_sb_event_receive_port_setup(struct ps3_system_bus_device *dev, |
| 392 | enum ps3_cpu_binding cpu, unsigned int *virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 393 | { |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 394 | /* this should go in system-bus.c */ |
| 395 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 396 | int result; |
| 397 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 398 | result = ps3_event_receive_port_setup(cpu, virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 399 | |
| 400 | if (result) |
| 401 | return result; |
| 402 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 403 | result = lv1_connect_interrupt_event_receive_port(dev->bus_id, |
| 404 | dev->dev_id, virq_to_hw(*virq), dev->interrupt_id); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 405 | |
| 406 | if (result) { |
| 407 | pr_debug("%s:%d: lv1_connect_interrupt_event_receive_port" |
| 408 | " failed: %s\n", __func__, __LINE__, |
| 409 | ps3_result(result)); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 410 | ps3_event_receive_port_destroy(*virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 411 | *virq = NO_IRQ; |
| 412 | return result; |
| 413 | } |
| 414 | |
| 415 | pr_debug("%s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__, |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 416 | dev->interrupt_id, *virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 417 | |
| 418 | return 0; |
| 419 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 420 | EXPORT_SYMBOL(ps3_sb_event_receive_port_setup); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 421 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 422 | int ps3_sb_event_receive_port_destroy(struct ps3_system_bus_device *dev, |
| 423 | unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 424 | { |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 425 | /* this should go in system-bus.c */ |
| 426 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 427 | int result; |
| 428 | |
| 429 | pr_debug(" -> %s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__, |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 430 | dev->interrupt_id, virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 431 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 432 | result = lv1_disconnect_interrupt_event_receive_port(dev->bus_id, |
| 433 | dev->dev_id, virq_to_hw(virq), dev->interrupt_id); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 434 | |
| 435 | if (result) |
| 436 | pr_debug("%s:%d: lv1_disconnect_interrupt_event_receive_port" |
| 437 | " failed: %s\n", __func__, __LINE__, |
| 438 | ps3_result(result)); |
| 439 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 440 | result = ps3_event_receive_port_destroy(virq); |
| 441 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 442 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 443 | /* |
| 444 | * ps3_event_receive_port_destroy() destroys the IRQ plug, |
| 445 | * so don't call ps3_irq_plug_destroy() here. |
| 446 | */ |
| 447 | |
| 448 | result = ps3_virq_destroy(virq); |
| 449 | BUG_ON(result); |
| 450 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 451 | pr_debug(" <- %s:%d\n", __func__, __LINE__); |
| 452 | return result; |
| 453 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 454 | EXPORT_SYMBOL(ps3_sb_event_receive_port_destroy); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 455 | |
| 456 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 457 | * ps3_io_irq_setup - Setup a system bus io irq. |
| 458 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 459 | * serviced on. |
| 460 | * @interrupt_id: The device interrupt id read from the system repository. |
| 461 | * @virq: The assigned Linux virq. |
| 462 | * |
| 463 | * An io irq represents a non-virtualized device interrupt. interrupt_id |
| 464 | * coresponds to the interrupt number of the interrupt controller. |
| 465 | */ |
| 466 | |
| 467 | int ps3_io_irq_setup(enum ps3_cpu_binding cpu, unsigned int interrupt_id, |
| 468 | unsigned int *virq) |
| 469 | { |
| 470 | int result; |
| 471 | unsigned long outlet; |
| 472 | |
| 473 | result = lv1_construct_io_irq_outlet(interrupt_id, &outlet); |
| 474 | |
| 475 | if (result) { |
| 476 | pr_debug("%s:%d: lv1_construct_io_irq_outlet failed: %s\n", |
| 477 | __func__, __LINE__, ps3_result(result)); |
| 478 | return result; |
| 479 | } |
| 480 | |
| 481 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
| 482 | BUG_ON(result); |
| 483 | |
| 484 | return result; |
| 485 | } |
| 486 | EXPORT_SYMBOL_GPL(ps3_io_irq_setup); |
| 487 | |
| 488 | int ps3_io_irq_destroy(unsigned int virq) |
| 489 | { |
| 490 | int result; |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 491 | unsigned long outlet = virq_to_hw(virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 492 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 493 | ps3_chip_mask(virq); |
| 494 | |
| 495 | /* |
| 496 | * lv1_destruct_io_irq_outlet() will destroy the IRQ plug, |
| 497 | * so call ps3_irq_plug_destroy() first. |
| 498 | */ |
| 499 | |
| 500 | result = ps3_irq_plug_destroy(virq); |
| 501 | BUG_ON(result); |
| 502 | |
| 503 | result = lv1_destruct_io_irq_outlet(outlet); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 504 | |
| 505 | if (result) |
| 506 | pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n", |
| 507 | __func__, __LINE__, ps3_result(result)); |
| 508 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 509 | return result; |
| 510 | } |
| 511 | EXPORT_SYMBOL_GPL(ps3_io_irq_destroy); |
| 512 | |
| 513 | /** |
| 514 | * ps3_vuart_irq_setup - Setup the system virtual uart virq. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 515 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 516 | * serviced on. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 517 | * @virt_addr_bmp: The caller supplied virtual uart interrupt bitmap. |
| 518 | * @virq: The assigned Linux virq. |
| 519 | * |
| 520 | * The system supports only a single virtual uart, so multiple calls without |
| 521 | * freeing the interrupt will return a wrong state error. |
| 522 | */ |
| 523 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 524 | int ps3_vuart_irq_setup(enum ps3_cpu_binding cpu, void* virt_addr_bmp, |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 525 | unsigned int *virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 526 | { |
| 527 | int result; |
| 528 | unsigned long outlet; |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 529 | u64 lpar_addr; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 530 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 531 | BUG_ON(!is_kernel_addr((u64)virt_addr_bmp)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 532 | |
| 533 | lpar_addr = ps3_mm_phys_to_lpar(__pa(virt_addr_bmp)); |
| 534 | |
| 535 | result = lv1_configure_virtual_uart_irq(lpar_addr, &outlet); |
| 536 | |
| 537 | if (result) { |
| 538 | pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n", |
| 539 | __func__, __LINE__, ps3_result(result)); |
| 540 | return result; |
| 541 | } |
| 542 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 543 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 544 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 545 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 546 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 547 | } |
Geoff Levand | 7626e78 | 2007-06-16 08:01:06 +1000 | [diff] [blame] | 548 | EXPORT_SYMBOL_GPL(ps3_vuart_irq_setup); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 549 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 550 | int ps3_vuart_irq_destroy(unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 551 | { |
| 552 | int result; |
| 553 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 554 | ps3_chip_mask(virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 555 | result = lv1_deconfigure_virtual_uart_irq(); |
| 556 | |
| 557 | if (result) { |
| 558 | pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n", |
| 559 | __func__, __LINE__, ps3_result(result)); |
| 560 | return result; |
| 561 | } |
| 562 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 563 | result = ps3_irq_plug_destroy(virq); |
| 564 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 565 | |
| 566 | return result; |
| 567 | } |
Geoff Levand | 7626e78 | 2007-06-16 08:01:06 +1000 | [diff] [blame] | 568 | EXPORT_SYMBOL_GPL(ps3_vuart_irq_destroy); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 569 | |
| 570 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 571 | * ps3_spe_irq_setup - Setup an spe virq. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 572 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 573 | * serviced on. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 574 | * @spe_id: The spe_id returned from lv1_construct_logical_spe(). |
| 575 | * @class: The spe interrupt class {0,1,2}. |
| 576 | * @virq: The assigned Linux virq. |
| 577 | * |
| 578 | */ |
| 579 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 580 | int ps3_spe_irq_setup(enum ps3_cpu_binding cpu, unsigned long spe_id, |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 581 | unsigned int class, unsigned int *virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 582 | { |
| 583 | int result; |
| 584 | unsigned long outlet; |
| 585 | |
| 586 | BUG_ON(class > 2); |
| 587 | |
| 588 | result = lv1_get_spe_irq_outlet(spe_id, class, &outlet); |
| 589 | |
| 590 | if (result) { |
| 591 | pr_debug("%s:%d: lv1_get_spe_irq_outlet failed: %s\n", |
| 592 | __func__, __LINE__, ps3_result(result)); |
| 593 | return result; |
| 594 | } |
| 595 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 596 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 597 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 598 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 599 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 600 | } |
| 601 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 602 | int ps3_spe_irq_destroy(unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 603 | { |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 604 | int result; |
| 605 | |
| 606 | ps3_chip_mask(virq); |
| 607 | |
| 608 | result = ps3_irq_plug_destroy(virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 609 | BUG_ON(result); |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 610 | |
| 611 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 612 | } |
| 613 | |
Geert Uytterhoeven | b1eeb38 | 2007-01-26 19:08:12 -0800 | [diff] [blame] | 614 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 615 | #define PS3_INVALID_OUTLET ((irq_hw_number_t)-1) |
| 616 | #define PS3_PLUG_MAX 63 |
| 617 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 618 | #if defined(DEBUG) |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 619 | static void _dump_64_bmp(const char *header, const u64 *p, unsigned cpu, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 620 | const char* func, int line) |
| 621 | { |
| 622 | pr_debug("%s:%d: %s %u {%04lx_%04lx_%04lx_%04lx}\n", |
| 623 | func, line, header, cpu, |
| 624 | *p >> 48, (*p >> 32) & 0xffff, (*p >> 16) & 0xffff, |
| 625 | *p & 0xffff); |
| 626 | } |
| 627 | |
Geoff Levand | 848cfdc | 2007-06-16 07:18:14 +1000 | [diff] [blame] | 628 | static void __maybe_unused _dump_256_bmp(const char *header, |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 629 | const u64 *p, unsigned cpu, const char* func, int line) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 630 | { |
| 631 | pr_debug("%s:%d: %s %u {%016lx:%016lx:%016lx:%016lx}\n", |
| 632 | func, line, header, cpu, p[0], p[1], p[2], p[3]); |
| 633 | } |
| 634 | |
| 635 | #define dump_bmp(_x) _dump_bmp(_x, __func__, __LINE__) |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 636 | static void _dump_bmp(struct ps3_private* pd, const char* func, int line) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 637 | { |
| 638 | unsigned long flags; |
| 639 | |
| 640 | spin_lock_irqsave(&pd->bmp.lock, flags); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 641 | _dump_64_bmp("stat", &pd->bmp.status, pd->thread_id, func, line); |
| 642 | _dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 643 | spin_unlock_irqrestore(&pd->bmp.lock, flags); |
| 644 | } |
| 645 | |
| 646 | #define dump_mask(_x) _dump_mask(_x, __func__, __LINE__) |
Geoff Levand | 848cfdc | 2007-06-16 07:18:14 +1000 | [diff] [blame] | 647 | static void __maybe_unused _dump_mask(struct ps3_private *pd, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 648 | const char* func, int line) |
| 649 | { |
| 650 | unsigned long flags; |
| 651 | |
| 652 | spin_lock_irqsave(&pd->bmp.lock, flags); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 653 | _dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 654 | spin_unlock_irqrestore(&pd->bmp.lock, flags); |
| 655 | } |
| 656 | #else |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 657 | static void dump_bmp(struct ps3_private* pd) {}; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 658 | #endif /* defined(DEBUG) */ |
| 659 | |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 660 | static void ps3_host_unmap(struct irq_host *h, unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 661 | { |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 662 | set_irq_chip_data(virq, NULL); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 663 | } |
| 664 | |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 665 | static int ps3_host_map(struct irq_host *h, unsigned int virq, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 666 | irq_hw_number_t hwirq) |
| 667 | { |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 668 | pr_debug("%s:%d: hwirq %lu, virq %u\n", __func__, __LINE__, hwirq, |
| 669 | virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 670 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 671 | set_irq_chip_and_handler(virq, &ps3_irq_chip, handle_fasteoi_irq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 672 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 673 | return 0; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 674 | } |
| 675 | |
Michael Ellerman | 8528ab8 | 2007-08-28 18:47:55 +1000 | [diff] [blame] | 676 | static int ps3_host_match(struct irq_host *h, struct device_node *np) |
| 677 | { |
| 678 | /* Match all */ |
| 679 | return 1; |
| 680 | } |
| 681 | |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 682 | static struct irq_host_ops ps3_host_ops = { |
| 683 | .map = ps3_host_map, |
| 684 | .unmap = ps3_host_unmap, |
Michael Ellerman | 8528ab8 | 2007-08-28 18:47:55 +1000 | [diff] [blame] | 685 | .match = ps3_host_match, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 686 | }; |
| 687 | |
| 688 | void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq) |
| 689 | { |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 690 | struct ps3_private *pd = &per_cpu(ps3_private, cpu); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 691 | |
| 692 | pd->bmp.ipi_debug_brk_mask = 0x8000000000000000UL >> virq; |
| 693 | |
| 694 | pr_debug("%s:%d: cpu %u, virq %u, mask %lxh\n", __func__, __LINE__, |
| 695 | cpu, virq, pd->bmp.ipi_debug_brk_mask); |
| 696 | } |
| 697 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 698 | static unsigned int ps3_get_irq(void) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 699 | { |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 700 | struct ps3_private *pd = &__get_cpu_var(ps3_private); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 701 | u64 x = (pd->bmp.status & pd->bmp.mask); |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 702 | unsigned int plug; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 703 | |
| 704 | /* check for ipi break first to stop this cpu ASAP */ |
| 705 | |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 706 | if (x & pd->bmp.ipi_debug_brk_mask) |
| 707 | x &= pd->bmp.ipi_debug_brk_mask; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 708 | |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 709 | asm volatile("cntlzd %0,%1" : "=r" (plug) : "r" (x)); |
| 710 | plug &= 0x3f; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 711 | |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 712 | if (unlikely(plug) == NO_IRQ) { |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 713 | pr_debug("%s:%d: no plug found: thread_id %lu\n", __func__, |
| 714 | __LINE__, pd->thread_id); |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 715 | dump_bmp(&per_cpu(ps3_private, 0)); |
| 716 | dump_bmp(&per_cpu(ps3_private, 1)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 717 | return NO_IRQ; |
| 718 | } |
| 719 | |
| 720 | #if defined(DEBUG) |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 721 | if (unlikely(plug < NUM_ISA_INTERRUPTS || plug > PS3_PLUG_MAX)) { |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 722 | dump_bmp(&per_cpu(ps3_private, 0)); |
| 723 | dump_bmp(&per_cpu(ps3_private, 1)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 724 | BUG(); |
| 725 | } |
| 726 | #endif |
| 727 | return plug; |
| 728 | } |
| 729 | |
| 730 | void __init ps3_init_IRQ(void) |
| 731 | { |
| 732 | int result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 733 | unsigned cpu; |
| 734 | struct irq_host *host; |
| 735 | |
Michael Ellerman | 52964f8 | 2007-08-28 18:47:54 +1000 | [diff] [blame] | 736 | host = irq_alloc_host(NULL, IRQ_HOST_MAP_NOMAP, 0, &ps3_host_ops, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 737 | PS3_INVALID_OUTLET); |
| 738 | irq_set_default_host(host); |
| 739 | irq_set_virq_count(PS3_PLUG_MAX + 1); |
| 740 | |
| 741 | for_each_possible_cpu(cpu) { |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 742 | struct ps3_private *pd = &per_cpu(ps3_private, cpu); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 743 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 744 | lv1_get_logical_ppe_id(&pd->ppe_id); |
| 745 | pd->thread_id = get_hard_smp_processor_id(cpu); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 746 | spin_lock_init(&pd->bmp.lock); |
| 747 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 748 | pr_debug("%s:%d: ppe_id %lu, thread_id %lu, bmp %lxh\n", |
| 749 | __func__, __LINE__, pd->ppe_id, pd->thread_id, |
Geoff Levand | 407e24a | 2007-01-26 19:08:02 -0800 | [diff] [blame] | 750 | ps3_mm_phys_to_lpar(__pa(&pd->bmp))); |
| 751 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 752 | result = lv1_configure_irq_state_bitmap(pd->ppe_id, |
| 753 | pd->thread_id, ps3_mm_phys_to_lpar(__pa(&pd->bmp))); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 754 | |
| 755 | if (result) |
| 756 | pr_debug("%s:%d: lv1_configure_irq_state_bitmap failed:" |
| 757 | " %s\n", __func__, __LINE__, |
| 758 | ps3_result(result)); |
| 759 | } |
| 760 | |
| 761 | ppc_md.get_irq = ps3_get_irq; |
| 762 | } |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 763 | |
| 764 | void ps3_shutdown_IRQ(int cpu) |
| 765 | { |
| 766 | int result; |
| 767 | u64 ppe_id; |
| 768 | u64 thread_id = get_hard_smp_processor_id(cpu); |
| 769 | |
| 770 | lv1_get_logical_ppe_id(&ppe_id); |
| 771 | result = lv1_configure_irq_state_bitmap(ppe_id, thread_id, 0); |
| 772 | |
| 773 | DBG("%s:%d: lv1_configure_irq_state_bitmap (%lu:%lu/%d) %s\n", __func__, |
| 774 | __LINE__, ppe_id, thread_id, cpu, ps3_result(result)); |
| 775 | } |