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> |
Paul Gortmaker | 4b16f8e | 2011-07-22 18:24:23 -0400 | [diff] [blame] | 22 | #include <linux/export.h> |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 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 | * |
Uwe Kleine-König | b595076 | 2010-11-01 15:38:34 -0400 | [diff] [blame] | 47 | * The HV maintains per SMT thread mappings of HV outlet to HV plug on |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 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. |
Stephen Rothwell | 46ca0d1 | 2009-01-13 20:00:29 +0000 | [diff] [blame] | 63 | * |
| 64 | * The mask is declared as unsigned long so we can use set/clear_bit on it. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 65 | */ |
| 66 | |
Geoff Levand | 5771576 | 2007-01-26 19:08:16 -0800 | [diff] [blame] | 67 | #define PS3_BMP_MINALIGN 64 |
| 68 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 69 | struct ps3_bmp { |
| 70 | struct { |
| 71 | u64 status; |
| 72 | u64 unused_1[3]; |
Stephen Rothwell | 46ca0d1 | 2009-01-13 20:00:29 +0000 | [diff] [blame] | 73 | unsigned long mask; |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 74 | u64 unused_2[3]; |
| 75 | }; |
| 76 | u64 ipi_debug_brk_mask; |
| 77 | spinlock_t lock; |
| 78 | }; |
| 79 | |
| 80 | /** |
| 81 | * struct ps3_private - a per cpu data structure |
| 82 | * @bmp: ps3_bmp structure |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 83 | * @ppe_id: HV logical_ppe_id |
| 84 | * @thread_id: HV thread_id |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 85 | */ |
| 86 | |
| 87 | struct ps3_private { |
Geoff Levand | 5771576 | 2007-01-26 19:08:16 -0800 | [diff] [blame] | 88 | struct ps3_bmp bmp __attribute__ ((aligned (PS3_BMP_MINALIGN))); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 89 | u64 ppe_id; |
| 90 | u64 thread_id; |
Geoff Levand | 72f3bea | 2011-11-08 12:37:26 +0000 | [diff] [blame] | 91 | unsigned long ipi_mask; |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 92 | }; |
| 93 | |
| 94 | static DEFINE_PER_CPU(struct ps3_private, ps3_private); |
| 95 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 96 | /** |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 97 | * ps3_chip_mask - Set an interrupt mask bit in ps3_bmp. |
| 98 | * @virq: The assigned Linux virq. |
| 99 | * |
| 100 | * Sets ps3_bmp.mask and calls lv1_did_update_interrupt_mask(). |
| 101 | */ |
| 102 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 103 | static void ps3_chip_mask(struct irq_data *d) |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 104 | { |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 105 | struct ps3_private *pd = irq_data_get_irq_chip_data(d); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 106 | unsigned long flags; |
| 107 | |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 108 | pr_debug("%s:%d: thread_id %llu, virq %d\n", __func__, __LINE__, |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 109 | pd->thread_id, d->irq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 110 | |
| 111 | local_irq_save(flags); |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 112 | clear_bit(63 - d->irq, &pd->bmp.mask); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 113 | lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 114 | local_irq_restore(flags); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * ps3_chip_unmask - Clear an interrupt mask bit in ps3_bmp. |
| 119 | * @virq: The assigned Linux virq. |
| 120 | * |
| 121 | * Clears ps3_bmp.mask and calls lv1_did_update_interrupt_mask(). |
| 122 | */ |
| 123 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 124 | static void ps3_chip_unmask(struct irq_data *d) |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 125 | { |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 126 | struct ps3_private *pd = irq_data_get_irq_chip_data(d); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 127 | unsigned long flags; |
| 128 | |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 129 | pr_debug("%s:%d: thread_id %llu, virq %d\n", __func__, __LINE__, |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 130 | pd->thread_id, d->irq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 131 | |
| 132 | local_irq_save(flags); |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 133 | set_bit(63 - d->irq, &pd->bmp.mask); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 134 | lv1_did_update_interrupt_mask(pd->ppe_id, pd->thread_id); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 135 | local_irq_restore(flags); |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * ps3_chip_eoi - HV end-of-interrupt. |
| 140 | * @virq: The assigned Linux virq. |
| 141 | * |
| 142 | * Calls lv1_end_of_interrupt_ext(). |
| 143 | */ |
| 144 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 145 | static void ps3_chip_eoi(struct irq_data *d) |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 146 | { |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 147 | const struct ps3_private *pd = irq_data_get_irq_chip_data(d); |
Geoff Levand | 72f3bea | 2011-11-08 12:37:26 +0000 | [diff] [blame] | 148 | |
| 149 | /* non-IPIs are EOIed here. */ |
| 150 | |
| 151 | if (!test_bit(63 - d->irq, &pd->ipi_mask)) |
| 152 | lv1_end_of_interrupt_ext(pd->ppe_id, pd->thread_id, d->irq); |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | /** |
| 156 | * ps3_irq_chip - Represents the ps3_bmp as a Linux struct irq_chip. |
| 157 | */ |
| 158 | |
| 159 | static struct irq_chip ps3_irq_chip = { |
Thomas Gleixner | b27df67 | 2009-11-18 23:44:21 +0000 | [diff] [blame] | 160 | .name = "ps3", |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 161 | .irq_mask = ps3_chip_mask, |
| 162 | .irq_unmask = ps3_chip_unmask, |
| 163 | .irq_eoi = ps3_chip_eoi, |
Geoff Levand | 743c1bb | 2007-06-16 07:19:18 +1000 | [diff] [blame] | 164 | }; |
| 165 | |
| 166 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 167 | * ps3_virq_setup - virq related setup. |
| 168 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 169 | * serviced on. |
| 170 | * @outlet: The HV outlet from the various create outlet routines. |
| 171 | * @virq: The assigned Linux virq. |
| 172 | * |
| 173 | * Calls irq_create_mapping() to get a virq and sets the chip data to |
| 174 | * ps3_private data. |
| 175 | */ |
| 176 | |
Geert Uytterhoeven | fdedb4c | 2008-05-01 08:25:18 +1000 | [diff] [blame] | 177 | static int ps3_virq_setup(enum ps3_cpu_binding cpu, unsigned long outlet, |
| 178 | unsigned int *virq) |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 179 | { |
| 180 | int result; |
| 181 | struct ps3_private *pd; |
| 182 | |
| 183 | /* This defines the default interrupt distribution policy. */ |
| 184 | |
| 185 | if (cpu == PS3_BINDING_CPU_ANY) |
| 186 | cpu = 0; |
| 187 | |
| 188 | pd = &per_cpu(ps3_private, cpu); |
| 189 | |
| 190 | *virq = irq_create_mapping(NULL, outlet); |
| 191 | |
| 192 | if (*virq == NO_IRQ) { |
| 193 | pr_debug("%s:%d: irq_create_mapping failed: outlet %lu\n", |
| 194 | __func__, __LINE__, outlet); |
| 195 | result = -ENOMEM; |
| 196 | goto fail_create; |
| 197 | } |
| 198 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 199 | pr_debug("%s:%d: outlet %lu => cpu %u, virq %u\n", __func__, __LINE__, |
| 200 | outlet, cpu, *virq); |
| 201 | |
Thomas Gleixner | ec775d0 | 2011-03-25 16:45:20 +0100 | [diff] [blame] | 202 | result = irq_set_chip_data(*virq, pd); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 203 | |
| 204 | if (result) { |
Geert Uytterhoeven | b618d2f | 2011-04-09 22:59:07 +0000 | [diff] [blame] | 205 | pr_debug("%s:%d: irq_set_chip_data failed\n", |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 206 | __func__, __LINE__); |
| 207 | goto fail_set; |
| 208 | } |
| 209 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 210 | ps3_chip_mask(irq_get_irq_data(*virq)); |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 211 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 212 | return result; |
| 213 | |
| 214 | fail_set: |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 215 | irq_dispose_mapping(*virq); |
| 216 | fail_create: |
| 217 | return result; |
| 218 | } |
| 219 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 220 | /** |
| 221 | * ps3_virq_destroy - virq related teardown. |
| 222 | * @virq: The assigned Linux virq. |
| 223 | * |
| 224 | * Clears chip data and calls irq_dispose_mapping() for the virq. |
| 225 | */ |
| 226 | |
Geert Uytterhoeven | fdedb4c | 2008-05-01 08:25:18 +1000 | [diff] [blame] | 227 | static int ps3_virq_destroy(unsigned int virq) |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 228 | { |
Thomas Gleixner | ec775d0 | 2011-03-25 16:45:20 +0100 | [diff] [blame] | 229 | const struct ps3_private *pd = irq_get_chip_data(virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 230 | |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 231 | pr_debug("%s:%d: ppe_id %llu, thread_id %llu, virq %u\n", __func__, |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 232 | __LINE__, pd->ppe_id, pd->thread_id, virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 233 | |
Thomas Gleixner | ec775d0 | 2011-03-25 16:45:20 +0100 | [diff] [blame] | 234 | irq_set_chip_data(virq, NULL); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 235 | irq_dispose_mapping(virq); |
| 236 | |
| 237 | pr_debug("%s:%d <-\n", __func__, __LINE__); |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * ps3_irq_plug_setup - Generic outlet and virq related setup. |
| 243 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 244 | * serviced on. |
| 245 | * @outlet: The HV outlet from the various create outlet routines. |
| 246 | * @virq: The assigned Linux virq. |
| 247 | * |
| 248 | * Sets up virq and connects the irq plug. |
| 249 | */ |
| 250 | |
| 251 | int ps3_irq_plug_setup(enum ps3_cpu_binding cpu, unsigned long outlet, |
| 252 | unsigned int *virq) |
| 253 | { |
| 254 | int result; |
| 255 | struct ps3_private *pd; |
| 256 | |
| 257 | result = ps3_virq_setup(cpu, outlet, virq); |
| 258 | |
| 259 | if (result) { |
| 260 | pr_debug("%s:%d: ps3_virq_setup failed\n", __func__, __LINE__); |
| 261 | goto fail_setup; |
| 262 | } |
| 263 | |
Thomas Gleixner | ec775d0 | 2011-03-25 16:45:20 +0100 | [diff] [blame] | 264 | pd = irq_get_chip_data(*virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 265 | |
| 266 | /* Binds outlet to cpu + virq. */ |
| 267 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 268 | result = lv1_connect_irq_plug_ext(pd->ppe_id, pd->thread_id, *virq, |
| 269 | outlet, 0); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 270 | |
| 271 | if (result) { |
| 272 | pr_info("%s:%d: lv1_connect_irq_plug_ext failed: %s\n", |
| 273 | __func__, __LINE__, ps3_result(result)); |
| 274 | result = -EPERM; |
| 275 | goto fail_connect; |
| 276 | } |
| 277 | |
| 278 | return result; |
| 279 | |
| 280 | fail_connect: |
| 281 | ps3_virq_destroy(*virq); |
| 282 | fail_setup: |
| 283 | return result; |
| 284 | } |
| 285 | EXPORT_SYMBOL_GPL(ps3_irq_plug_setup); |
| 286 | |
| 287 | /** |
| 288 | * ps3_irq_plug_destroy - Generic outlet and virq related teardown. |
| 289 | * @virq: The assigned Linux virq. |
| 290 | * |
| 291 | * Disconnects the irq plug and tears down virq. |
| 292 | * Do not call for system bus event interrupts setup with |
| 293 | * ps3_sb_event_receive_port_setup(). |
| 294 | */ |
| 295 | |
| 296 | int ps3_irq_plug_destroy(unsigned int virq) |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 297 | { |
| 298 | int result; |
Thomas Gleixner | ec775d0 | 2011-03-25 16:45:20 +0100 | [diff] [blame] | 299 | const struct ps3_private *pd = irq_get_chip_data(virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 300 | |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 301 | pr_debug("%s:%d: ppe_id %llu, thread_id %llu, virq %u\n", __func__, |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 302 | __LINE__, pd->ppe_id, pd->thread_id, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 303 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 304 | ps3_chip_mask(irq_get_irq_data(virq)); |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 305 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 306 | 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] | 307 | |
| 308 | if (result) |
| 309 | pr_info("%s:%d: lv1_disconnect_irq_plug_ext failed: %s\n", |
| 310 | __func__, __LINE__, ps3_result(result)); |
| 311 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 312 | ps3_virq_destroy(virq); |
| 313 | |
Geert Uytterhoeven | b1eeb38 | 2007-01-26 19:08:12 -0800 | [diff] [blame] | 314 | return result; |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 315 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 316 | EXPORT_SYMBOL_GPL(ps3_irq_plug_destroy); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 317 | |
| 318 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 319 | * ps3_event_receive_port_setup - Setup an event receive port. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 320 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 321 | * serviced on. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 322 | * @virq: The assigned Linux virq. |
| 323 | * |
| 324 | * 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] | 325 | * arrange to receive interrupts from system-bus devices, or with |
| 326 | * ps3_send_event_locally() to signal events. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 327 | */ |
| 328 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 329 | 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] | 330 | { |
| 331 | int result; |
Stephen Rothwell | b17b3df | 2009-01-13 19:59:41 +0000 | [diff] [blame] | 332 | u64 outlet; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 333 | |
| 334 | result = lv1_construct_event_receive_port(&outlet); |
| 335 | |
| 336 | if (result) { |
| 337 | pr_debug("%s:%d: lv1_construct_event_receive_port failed: %s\n", |
| 338 | __func__, __LINE__, ps3_result(result)); |
| 339 | *virq = NO_IRQ; |
| 340 | return result; |
| 341 | } |
| 342 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 343 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 344 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 345 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 346 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 347 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 348 | EXPORT_SYMBOL_GPL(ps3_event_receive_port_setup); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 349 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 350 | /** |
| 351 | * ps3_event_receive_port_destroy - Destroy an event receive port. |
| 352 | * @virq: The assigned Linux virq. |
| 353 | * |
| 354 | * Since ps3_event_receive_port_destroy destroys the receive port outlet, |
| 355 | * SB devices need to call disconnect_interrupt_event_receive_port() before |
| 356 | * this. |
| 357 | */ |
| 358 | |
| 359 | int ps3_event_receive_port_destroy(unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 360 | { |
| 361 | int result; |
| 362 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 363 | pr_debug(" -> %s:%d virq %u\n", __func__, __LINE__, virq); |
| 364 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 365 | ps3_chip_mask(irq_get_irq_data(virq)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 366 | |
| 367 | result = lv1_destruct_event_receive_port(virq_to_hw(virq)); |
| 368 | |
| 369 | if (result) |
| 370 | pr_debug("%s:%d: lv1_destruct_event_receive_port failed: %s\n", |
| 371 | __func__, __LINE__, ps3_result(result)); |
| 372 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 373 | /* |
| 374 | * Don't call ps3_virq_destroy() here since ps3_smp_cleanup_cpu() |
| 375 | * calls from interrupt context (smp_call_function) when kexecing. |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 376 | */ |
| 377 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 378 | pr_debug(" <- %s:%d\n", __func__, __LINE__); |
| 379 | return result; |
| 380 | } |
| 381 | |
| 382 | int ps3_send_event_locally(unsigned int virq) |
| 383 | { |
| 384 | return lv1_send_event_locally(virq_to_hw(virq)); |
| 385 | } |
| 386 | |
| 387 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 388 | * 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] | 389 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 390 | * serviced on. |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 391 | * @dev: The system bus device instance. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 392 | * @virq: The assigned Linux virq. |
| 393 | * |
| 394 | * An event irq represents a virtual device interrupt. The interrupt_id |
| 395 | * coresponds to the software interrupt number. |
| 396 | */ |
| 397 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 398 | int ps3_sb_event_receive_port_setup(struct ps3_system_bus_device *dev, |
| 399 | enum ps3_cpu_binding cpu, unsigned int *virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 400 | { |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 401 | /* this should go in system-bus.c */ |
| 402 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 403 | int result; |
| 404 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 405 | result = ps3_event_receive_port_setup(cpu, virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 406 | |
| 407 | if (result) |
| 408 | return result; |
| 409 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 410 | result = lv1_connect_interrupt_event_receive_port(dev->bus_id, |
| 411 | dev->dev_id, virq_to_hw(*virq), dev->interrupt_id); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 412 | |
| 413 | if (result) { |
| 414 | pr_debug("%s:%d: lv1_connect_interrupt_event_receive_port" |
| 415 | " failed: %s\n", __func__, __LINE__, |
| 416 | ps3_result(result)); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 417 | ps3_event_receive_port_destroy(*virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 418 | *virq = NO_IRQ; |
| 419 | return result; |
| 420 | } |
| 421 | |
| 422 | pr_debug("%s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__, |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 423 | dev->interrupt_id, *virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 424 | |
| 425 | return 0; |
| 426 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 427 | EXPORT_SYMBOL(ps3_sb_event_receive_port_setup); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 428 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 429 | int ps3_sb_event_receive_port_destroy(struct ps3_system_bus_device *dev, |
| 430 | unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 431 | { |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 432 | /* this should go in system-bus.c */ |
| 433 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 434 | int result; |
| 435 | |
| 436 | pr_debug(" -> %s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__, |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 437 | dev->interrupt_id, virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 438 | |
Geoff Levand | 6bb5cf1 | 2007-06-16 07:52:02 +1000 | [diff] [blame] | 439 | result = lv1_disconnect_interrupt_event_receive_port(dev->bus_id, |
| 440 | dev->dev_id, virq_to_hw(virq), dev->interrupt_id); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 441 | |
| 442 | if (result) |
| 443 | pr_debug("%s:%d: lv1_disconnect_interrupt_event_receive_port" |
| 444 | " failed: %s\n", __func__, __LINE__, |
| 445 | ps3_result(result)); |
| 446 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 447 | result = ps3_event_receive_port_destroy(virq); |
| 448 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 449 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 450 | /* |
| 451 | * ps3_event_receive_port_destroy() destroys the IRQ plug, |
| 452 | * so don't call ps3_irq_plug_destroy() here. |
| 453 | */ |
| 454 | |
| 455 | result = ps3_virq_destroy(virq); |
| 456 | BUG_ON(result); |
| 457 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 458 | pr_debug(" <- %s:%d\n", __func__, __LINE__); |
| 459 | return result; |
| 460 | } |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 461 | EXPORT_SYMBOL(ps3_sb_event_receive_port_destroy); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 462 | |
| 463 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 464 | * ps3_io_irq_setup - Setup a system bus io irq. |
| 465 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 466 | * serviced on. |
| 467 | * @interrupt_id: The device interrupt id read from the system repository. |
| 468 | * @virq: The assigned Linux virq. |
| 469 | * |
| 470 | * An io irq represents a non-virtualized device interrupt. interrupt_id |
| 471 | * coresponds to the interrupt number of the interrupt controller. |
| 472 | */ |
| 473 | |
| 474 | int ps3_io_irq_setup(enum ps3_cpu_binding cpu, unsigned int interrupt_id, |
| 475 | unsigned int *virq) |
| 476 | { |
| 477 | int result; |
Stephen Rothwell | b17b3df | 2009-01-13 19:59:41 +0000 | [diff] [blame] | 478 | u64 outlet; |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 479 | |
| 480 | result = lv1_construct_io_irq_outlet(interrupt_id, &outlet); |
| 481 | |
| 482 | if (result) { |
| 483 | pr_debug("%s:%d: lv1_construct_io_irq_outlet failed: %s\n", |
| 484 | __func__, __LINE__, ps3_result(result)); |
| 485 | return result; |
| 486 | } |
| 487 | |
| 488 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
| 489 | BUG_ON(result); |
| 490 | |
| 491 | return result; |
| 492 | } |
| 493 | EXPORT_SYMBOL_GPL(ps3_io_irq_setup); |
| 494 | |
| 495 | int ps3_io_irq_destroy(unsigned int virq) |
| 496 | { |
| 497 | int result; |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 498 | unsigned long outlet = virq_to_hw(virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 499 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 500 | ps3_chip_mask(irq_get_irq_data(virq)); |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 501 | |
| 502 | /* |
| 503 | * lv1_destruct_io_irq_outlet() will destroy the IRQ plug, |
| 504 | * so call ps3_irq_plug_destroy() first. |
| 505 | */ |
| 506 | |
| 507 | result = ps3_irq_plug_destroy(virq); |
| 508 | BUG_ON(result); |
| 509 | |
| 510 | result = lv1_destruct_io_irq_outlet(outlet); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 511 | |
| 512 | if (result) |
| 513 | pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n", |
| 514 | __func__, __LINE__, ps3_result(result)); |
| 515 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 516 | return result; |
| 517 | } |
| 518 | EXPORT_SYMBOL_GPL(ps3_io_irq_destroy); |
| 519 | |
| 520 | /** |
| 521 | * ps3_vuart_irq_setup - Setup the system virtual uart virq. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 522 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 523 | * serviced on. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 524 | * @virt_addr_bmp: The caller supplied virtual uart interrupt bitmap. |
| 525 | * @virq: The assigned Linux virq. |
| 526 | * |
| 527 | * The system supports only a single virtual uart, so multiple calls without |
| 528 | * freeing the interrupt will return a wrong state error. |
| 529 | */ |
| 530 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 531 | 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] | 532 | unsigned int *virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 533 | { |
| 534 | int result; |
Stephen Rothwell | b17b3df | 2009-01-13 19:59:41 +0000 | [diff] [blame] | 535 | u64 outlet; |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 536 | u64 lpar_addr; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 537 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 538 | BUG_ON(!is_kernel_addr((u64)virt_addr_bmp)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 539 | |
| 540 | lpar_addr = ps3_mm_phys_to_lpar(__pa(virt_addr_bmp)); |
| 541 | |
| 542 | result = lv1_configure_virtual_uart_irq(lpar_addr, &outlet); |
| 543 | |
| 544 | if (result) { |
| 545 | pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n", |
| 546 | __func__, __LINE__, ps3_result(result)); |
| 547 | return result; |
| 548 | } |
| 549 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 550 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 551 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 552 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 553 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 554 | } |
Geoff Levand | 7626e78 | 2007-06-16 08:01:06 +1000 | [diff] [blame] | 555 | EXPORT_SYMBOL_GPL(ps3_vuart_irq_setup); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 556 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 557 | int ps3_vuart_irq_destroy(unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 558 | { |
| 559 | int result; |
| 560 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 561 | ps3_chip_mask(irq_get_irq_data(virq)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 562 | result = lv1_deconfigure_virtual_uart_irq(); |
| 563 | |
| 564 | if (result) { |
| 565 | pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n", |
| 566 | __func__, __LINE__, ps3_result(result)); |
| 567 | return result; |
| 568 | } |
| 569 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 570 | result = ps3_irq_plug_destroy(virq); |
| 571 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 572 | |
| 573 | return result; |
| 574 | } |
Geoff Levand | 7626e78 | 2007-06-16 08:01:06 +1000 | [diff] [blame] | 575 | EXPORT_SYMBOL_GPL(ps3_vuart_irq_destroy); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 576 | |
| 577 | /** |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 578 | * ps3_spe_irq_setup - Setup an spe virq. |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 579 | * @cpu: enum ps3_cpu_binding indicating the cpu the interrupt should be |
| 580 | * serviced on. |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 581 | * @spe_id: The spe_id returned from lv1_construct_logical_spe(). |
| 582 | * @class: The spe interrupt class {0,1,2}. |
| 583 | * @virq: The assigned Linux virq. |
| 584 | * |
| 585 | */ |
| 586 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 587 | 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] | 588 | unsigned int class, unsigned int *virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 589 | { |
| 590 | int result; |
Stephen Rothwell | b17b3df | 2009-01-13 19:59:41 +0000 | [diff] [blame] | 591 | u64 outlet; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 592 | |
| 593 | BUG_ON(class > 2); |
| 594 | |
| 595 | result = lv1_get_spe_irq_outlet(spe_id, class, &outlet); |
| 596 | |
| 597 | if (result) { |
| 598 | pr_debug("%s:%d: lv1_get_spe_irq_outlet failed: %s\n", |
| 599 | __func__, __LINE__, ps3_result(result)); |
| 600 | return result; |
| 601 | } |
| 602 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 603 | result = ps3_irq_plug_setup(cpu, outlet, virq); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 604 | BUG_ON(result); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 605 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 606 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 607 | } |
| 608 | |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 609 | int ps3_spe_irq_destroy(unsigned int virq) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 610 | { |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 611 | int result; |
| 612 | |
Lennert Buytenhek | 8126708 | 2011-03-08 22:26:56 +0000 | [diff] [blame] | 613 | ps3_chip_mask(irq_get_irq_data(virq)); |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 614 | |
| 615 | result = ps3_irq_plug_destroy(virq); |
Geoff Levand | dc4f60c | 2007-05-01 07:01:01 +1000 | [diff] [blame] | 616 | BUG_ON(result); |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 617 | |
| 618 | return result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 619 | } |
| 620 | |
Geert Uytterhoeven | b1eeb38 | 2007-01-26 19:08:12 -0800 | [diff] [blame] | 621 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 622 | #define PS3_INVALID_OUTLET ((irq_hw_number_t)-1) |
| 623 | #define PS3_PLUG_MAX 63 |
| 624 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 625 | #if defined(DEBUG) |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 626 | 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] | 627 | const char* func, int line) |
| 628 | { |
| 629 | pr_debug("%s:%d: %s %u {%04lx_%04lx_%04lx_%04lx}\n", |
| 630 | func, line, header, cpu, |
| 631 | *p >> 48, (*p >> 32) & 0xffff, (*p >> 16) & 0xffff, |
| 632 | *p & 0xffff); |
| 633 | } |
| 634 | |
Geoff Levand | 848cfdc | 2007-06-16 07:18:14 +1000 | [diff] [blame] | 635 | static void __maybe_unused _dump_256_bmp(const char *header, |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 636 | const u64 *p, unsigned cpu, const char* func, int line) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 637 | { |
| 638 | pr_debug("%s:%d: %s %u {%016lx:%016lx:%016lx:%016lx}\n", |
| 639 | func, line, header, cpu, p[0], p[1], p[2], p[3]); |
| 640 | } |
| 641 | |
| 642 | #define dump_bmp(_x) _dump_bmp(_x, __func__, __LINE__) |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 643 | 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] | 644 | { |
| 645 | unsigned long flags; |
| 646 | |
| 647 | spin_lock_irqsave(&pd->bmp.lock, flags); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 648 | _dump_64_bmp("stat", &pd->bmp.status, pd->thread_id, func, line); |
| 649 | _dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 650 | spin_unlock_irqrestore(&pd->bmp.lock, flags); |
| 651 | } |
| 652 | |
| 653 | #define dump_mask(_x) _dump_mask(_x, __func__, __LINE__) |
Geoff Levand | 848cfdc | 2007-06-16 07:18:14 +1000 | [diff] [blame] | 654 | static void __maybe_unused _dump_mask(struct ps3_private *pd, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 655 | const char* func, int line) |
| 656 | { |
| 657 | unsigned long flags; |
| 658 | |
| 659 | spin_lock_irqsave(&pd->bmp.lock, flags); |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 660 | _dump_64_bmp("mask", &pd->bmp.mask, pd->thread_id, func, line); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 661 | spin_unlock_irqrestore(&pd->bmp.lock, flags); |
| 662 | } |
| 663 | #else |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 664 | static void dump_bmp(struct ps3_private* pd) {}; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 665 | #endif /* defined(DEBUG) */ |
| 666 | |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 667 | static int ps3_host_map(struct irq_host *h, unsigned int virq, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 668 | irq_hw_number_t hwirq) |
| 669 | { |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 670 | pr_debug("%s:%d: hwirq %lu, virq %u\n", __func__, __LINE__, hwirq, |
| 671 | virq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 672 | |
Thomas Gleixner | ec775d0 | 2011-03-25 16:45:20 +0100 | [diff] [blame] | 673 | irq_set_chip_and_handler(virq, &ps3_irq_chip, handle_fasteoi_irq); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 674 | |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 675 | return 0; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 676 | } |
| 677 | |
Michael Ellerman | 8528ab8 | 2007-08-28 18:47:55 +1000 | [diff] [blame] | 678 | static int ps3_host_match(struct irq_host *h, struct device_node *np) |
| 679 | { |
| 680 | /* Match all */ |
| 681 | return 1; |
| 682 | } |
| 683 | |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 684 | static struct irq_host_ops ps3_host_ops = { |
| 685 | .map = ps3_host_map, |
Michael Ellerman | 8528ab8 | 2007-08-28 18:47:55 +1000 | [diff] [blame] | 686 | .match = ps3_host_match, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 687 | }; |
| 688 | |
| 689 | void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq) |
| 690 | { |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 691 | struct ps3_private *pd = &per_cpu(ps3_private, cpu); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 692 | |
| 693 | pd->bmp.ipi_debug_brk_mask = 0x8000000000000000UL >> virq; |
| 694 | |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 695 | pr_debug("%s:%d: cpu %u, virq %u, mask %llxh\n", __func__, __LINE__, |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 696 | cpu, virq, pd->bmp.ipi_debug_brk_mask); |
| 697 | } |
| 698 | |
Geoff Levand | 72f3bea | 2011-11-08 12:37:26 +0000 | [diff] [blame] | 699 | void __init ps3_register_ipi_irq(unsigned int cpu, unsigned int virq) |
| 700 | { |
| 701 | struct ps3_private *pd = &per_cpu(ps3_private, cpu); |
| 702 | |
| 703 | set_bit(63 - virq, &pd->ipi_mask); |
| 704 | |
| 705 | DBG("%s:%d: cpu %u, virq %u, ipi_mask %lxh\n", __func__, __LINE__, |
| 706 | cpu, virq, pd->ipi_mask); |
| 707 | } |
| 708 | |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 709 | static unsigned int ps3_get_irq(void) |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 710 | { |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 711 | struct ps3_private *pd = &__get_cpu_var(ps3_private); |
Geoff Levand | 861be32 | 2007-01-26 19:08:08 -0800 | [diff] [blame] | 712 | u64 x = (pd->bmp.status & pd->bmp.mask); |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 713 | unsigned int plug; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 714 | |
| 715 | /* check for ipi break first to stop this cpu ASAP */ |
| 716 | |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 717 | if (x & pd->bmp.ipi_debug_brk_mask) |
| 718 | x &= pd->bmp.ipi_debug_brk_mask; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 719 | |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 720 | asm volatile("cntlzd %0,%1" : "=r" (plug) : "r" (x)); |
| 721 | plug &= 0x3f; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 722 | |
Roel Kluin | ad18c3d | 2008-03-27 11:37:18 +1100 | [diff] [blame] | 723 | if (unlikely(plug == NO_IRQ)) { |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 724 | pr_debug("%s:%d: no plug found: thread_id %llu\n", __func__, |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 725 | __LINE__, pd->thread_id); |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 726 | dump_bmp(&per_cpu(ps3_private, 0)); |
| 727 | dump_bmp(&per_cpu(ps3_private, 1)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 728 | return NO_IRQ; |
| 729 | } |
| 730 | |
| 731 | #if defined(DEBUG) |
Benjamin Herrenschmidt | 9cf9e19 | 2007-01-26 19:08:05 -0800 | [diff] [blame] | 732 | if (unlikely(plug < NUM_ISA_INTERRUPTS || plug > PS3_PLUG_MAX)) { |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 733 | dump_bmp(&per_cpu(ps3_private, 0)); |
| 734 | dump_bmp(&per_cpu(ps3_private, 1)); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 735 | BUG(); |
| 736 | } |
| 737 | #endif |
Geoff Levand | 72f3bea | 2011-11-08 12:37:26 +0000 | [diff] [blame] | 738 | |
| 739 | /* IPIs are EOIed here. */ |
| 740 | |
| 741 | if (test_bit(63 - plug, &pd->ipi_mask)) |
| 742 | lv1_end_of_interrupt_ext(pd->ppe_id, pd->thread_id, plug); |
| 743 | |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 744 | return plug; |
| 745 | } |
| 746 | |
| 747 | void __init ps3_init_IRQ(void) |
| 748 | { |
| 749 | int result; |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 750 | unsigned cpu; |
| 751 | struct irq_host *host; |
| 752 | |
Michael Ellerman | 52964f8 | 2007-08-28 18:47:54 +1000 | [diff] [blame] | 753 | 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] | 754 | PS3_INVALID_OUTLET); |
| 755 | irq_set_default_host(host); |
| 756 | irq_set_virq_count(PS3_PLUG_MAX + 1); |
| 757 | |
| 758 | for_each_possible_cpu(cpu) { |
Geoff Levand | 9633ac8 | 2007-01-26 19:07:59 -0800 | [diff] [blame] | 759 | struct ps3_private *pd = &per_cpu(ps3_private, cpu); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 760 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 761 | lv1_get_logical_ppe_id(&pd->ppe_id); |
| 762 | pd->thread_id = get_hard_smp_processor_id(cpu); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 763 | spin_lock_init(&pd->bmp.lock); |
| 764 | |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 765 | pr_debug("%s:%d: ppe_id %llu, thread_id %llu, bmp %lxh\n", |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 766 | __func__, __LINE__, pd->ppe_id, pd->thread_id, |
Geoff Levand | 407e24a | 2007-01-26 19:08:02 -0800 | [diff] [blame] | 767 | ps3_mm_phys_to_lpar(__pa(&pd->bmp))); |
| 768 | |
Geoff Levand | aab8350 | 2007-06-16 08:06:04 +1000 | [diff] [blame] | 769 | result = lv1_configure_irq_state_bitmap(pd->ppe_id, |
| 770 | pd->thread_id, ps3_mm_phys_to_lpar(__pa(&pd->bmp))); |
Geoff Levand | 2832a81 | 2006-11-23 00:46:56 +0100 | [diff] [blame] | 771 | |
| 772 | if (result) |
| 773 | pr_debug("%s:%d: lv1_configure_irq_state_bitmap failed:" |
| 774 | " %s\n", __func__, __LINE__, |
| 775 | ps3_result(result)); |
| 776 | } |
| 777 | |
| 778 | ppc_md.get_irq = ps3_get_irq; |
| 779 | } |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 780 | |
| 781 | void ps3_shutdown_IRQ(int cpu) |
| 782 | { |
| 783 | int result; |
| 784 | u64 ppe_id; |
| 785 | u64 thread_id = get_hard_smp_processor_id(cpu); |
| 786 | |
| 787 | lv1_get_logical_ppe_id(&ppe_id); |
| 788 | result = lv1_configure_irq_state_bitmap(ppe_id, thread_id, 0); |
| 789 | |
Stephen Rothwell | 5c94907 | 2009-01-13 20:02:39 +0000 | [diff] [blame] | 790 | DBG("%s:%d: lv1_configure_irq_state_bitmap (%llu:%llu/%d) %s\n", __func__, |
Geoff Levand | 9263e85 | 2007-06-16 07:19:32 +1000 | [diff] [blame] | 791 | __LINE__, ppe_id, thread_id, cpu, ps3_result(result)); |
| 792 | } |