Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Low-level SPU handling |
| 3 | * |
| 4 | * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 |
| 5 | * |
| 6 | * Author: Arnd Bergmann <arndb@de.ibm.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2, or (at your option) |
| 11 | * any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | */ |
| 22 | |
Arnd Bergmann | 3b3d22c | 2005-12-05 22:52:24 -0500 | [diff] [blame] | 23 | #undef DEBUG |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 24 | |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/list.h> |
| 27 | #include <linux/module.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 28 | #include <linux/ptrace.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/wait.h> |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 31 | #include <linux/mm.h> |
| 32 | #include <linux/io.h> |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 33 | #include <linux/mutex.h> |
Geert Uytterhoeven | bce9451 | 2007-07-17 04:05:52 -0700 | [diff] [blame] | 34 | #include <linux/linux_logo.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 35 | #include <asm/spu.h> |
Geoff Levand | 540270d | 2006-06-19 20:33:29 +0200 | [diff] [blame] | 36 | #include <asm/spu_priv1.h> |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 37 | #include <asm/xmon.h> |
Arnd Bergmann | 3ad216c | 2007-07-20 21:39:46 +0200 | [diff] [blame] | 38 | #include <asm/prom.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 39 | |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 40 | const struct spu_management_ops *spu_management_ops; |
Jeremy Kerr | ccf17e9 | 2007-04-23 21:08:29 +0200 | [diff] [blame] | 41 | EXPORT_SYMBOL_GPL(spu_management_ops); |
| 42 | |
Geoff Levand | 540270d | 2006-06-19 20:33:29 +0200 | [diff] [blame] | 43 | const struct spu_priv1_ops *spu_priv1_ops; |
Geoff Levand | 540270d | 2006-06-19 20:33:29 +0200 | [diff] [blame] | 44 | EXPORT_SYMBOL_GPL(spu_priv1_ops); |
| 45 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 46 | struct cbe_spu_info cbe_spu_info[MAX_NUMNODES]; |
| 47 | EXPORT_SYMBOL_GPL(cbe_spu_info); |
| 48 | |
| 49 | /* |
Jeremy Kerr | 3ce2f62 | 2007-12-05 13:49:31 +1100 | [diff] [blame^] | 50 | * The spufs fault-handling code needs to call force_sig_info to raise signals |
| 51 | * on DMA errors. Export it here to avoid general kernel-wide access to this |
| 52 | * function |
| 53 | */ |
| 54 | EXPORT_SYMBOL_GPL(force_sig_info); |
| 55 | |
| 56 | /* |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 57 | * Protects cbe_spu_info and spu->number. |
| 58 | */ |
| 59 | static DEFINE_SPINLOCK(spu_lock); |
| 60 | |
| 61 | /* |
| 62 | * List of all spus in the system. |
| 63 | * |
| 64 | * This list is iterated by callers from irq context and callers that |
| 65 | * want to sleep. Thus modifications need to be done with both |
| 66 | * spu_full_list_lock and spu_full_list_mutex held, while iterating |
| 67 | * through it requires either of these locks. |
| 68 | * |
| 69 | * In addition spu_full_list_lock protects all assignmens to |
| 70 | * spu->mm. |
| 71 | */ |
| 72 | static LIST_HEAD(spu_full_list); |
| 73 | static DEFINE_SPINLOCK(spu_full_list_lock); |
| 74 | static DEFINE_MUTEX(spu_full_list_mutex); |
| 75 | |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 76 | void spu_invalidate_slbs(struct spu *spu) |
| 77 | { |
| 78 | struct spu_priv2 __iomem *priv2 = spu->priv2; |
| 79 | |
| 80 | if (spu_mfc_sr1_get(spu) & MFC_STATE1_RELOCATE_MASK) |
| 81 | out_be64(&priv2->slb_invalidate_all_W, 0UL); |
| 82 | } |
| 83 | EXPORT_SYMBOL_GPL(spu_invalidate_slbs); |
| 84 | |
| 85 | /* This is called by the MM core when a segment size is changed, to |
| 86 | * request a flush of all the SPEs using a given mm |
| 87 | */ |
| 88 | void spu_flush_all_slbs(struct mm_struct *mm) |
| 89 | { |
| 90 | struct spu *spu; |
| 91 | unsigned long flags; |
| 92 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 93 | spin_lock_irqsave(&spu_full_list_lock, flags); |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 94 | list_for_each_entry(spu, &spu_full_list, full_list) { |
| 95 | if (spu->mm == mm) |
| 96 | spu_invalidate_slbs(spu); |
| 97 | } |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 98 | spin_unlock_irqrestore(&spu_full_list_lock, flags); |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | /* The hack below stinks... try to do something better one of |
| 102 | * these days... Does it even work properly with NR_CPUS == 1 ? |
| 103 | */ |
| 104 | static inline void mm_needs_global_tlbie(struct mm_struct *mm) |
| 105 | { |
| 106 | int nr = (NR_CPUS > 1) ? NR_CPUS : NR_CPUS + 1; |
| 107 | |
| 108 | /* Global TLBIE broadcast required with SPEs. */ |
| 109 | __cpus_setall(&mm->cpu_vm_mask, nr); |
| 110 | } |
| 111 | |
| 112 | void spu_associate_mm(struct spu *spu, struct mm_struct *mm) |
| 113 | { |
| 114 | unsigned long flags; |
| 115 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 116 | spin_lock_irqsave(&spu_full_list_lock, flags); |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 117 | spu->mm = mm; |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 118 | spin_unlock_irqrestore(&spu_full_list_lock, flags); |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 119 | if (mm) |
| 120 | mm_needs_global_tlbie(mm); |
| 121 | } |
| 122 | EXPORT_SYMBOL_GPL(spu_associate_mm); |
| 123 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 124 | static int __spu_trap_invalid_dma(struct spu *spu) |
| 125 | { |
| 126 | pr_debug("%s\n", __FUNCTION__); |
Arnd Bergmann | 9add11d | 2006-10-04 17:26:14 +0200 | [diff] [blame] | 127 | spu->dma_callback(spu, SPE_EVENT_INVALID_DMA); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | static int __spu_trap_dma_align(struct spu *spu) |
| 132 | { |
| 133 | pr_debug("%s\n", __FUNCTION__); |
Arnd Bergmann | 9add11d | 2006-10-04 17:26:14 +0200 | [diff] [blame] | 134 | spu->dma_callback(spu, SPE_EVENT_DMA_ALIGNMENT); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | static int __spu_trap_error(struct spu *spu) |
| 139 | { |
| 140 | pr_debug("%s\n", __FUNCTION__); |
Arnd Bergmann | 9add11d | 2006-10-04 17:26:14 +0200 | [diff] [blame] | 141 | spu->dma_callback(spu, SPE_EVENT_SPE_ERROR); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | static void spu_restart_dma(struct spu *spu) |
| 146 | { |
| 147 | struct spu_priv2 __iomem *priv2 = spu->priv2; |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 148 | |
Arnd Bergmann | 8837d92 | 2006-01-04 20:31:28 +0100 | [diff] [blame] | 149 | if (!test_bit(SPU_CONTEXT_SWITCH_PENDING, &spu->flags)) |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 150 | out_be64(&priv2->mfc_control_RW, MFC_CNTL_RESTART_DMA_COMMAND); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | static int __spu_trap_data_seg(struct spu *spu, unsigned long ea) |
| 154 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 155 | struct spu_priv2 __iomem *priv2 = spu->priv2; |
| 156 | struct mm_struct *mm = spu->mm; |
arnd@arndb.de | 724bd80 | 2006-06-19 20:33:23 +0200 | [diff] [blame] | 157 | u64 esid, vsid, llp; |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 158 | int psize; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 159 | |
| 160 | pr_debug("%s\n", __FUNCTION__); |
| 161 | |
Arnd Bergmann | 8837d92 | 2006-01-04 20:31:28 +0100 | [diff] [blame] | 162 | if (test_bit(SPU_CONTEXT_SWITCH_ACTIVE, &spu->flags)) { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 163 | /* SLBs are pre-loaded for context switch, so |
| 164 | * we should never get here! |
| 165 | */ |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 166 | printk("%s: invalid access during switch!\n", __func__); |
| 167 | return 1; |
| 168 | } |
arnd@arndb.de | 0afacde | 2006-10-24 18:31:18 +0200 | [diff] [blame] | 169 | esid = (ea & ESID_MASK) | SLB_ESID_V; |
| 170 | |
| 171 | switch(REGION_ID(ea)) { |
| 172 | case USER_REGION_ID: |
Benjamin Herrenschmidt | d0f13e3 | 2007-05-08 16:27:27 +1000 | [diff] [blame] | 173 | #ifdef CONFIG_PPC_MM_SLICES |
| 174 | psize = get_slice_psize(mm, ea); |
| 175 | #else |
| 176 | psize = mm->context.user_psize; |
arnd@arndb.de | 0afacde | 2006-10-24 18:31:18 +0200 | [diff] [blame] | 177 | #endif |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 178 | vsid = (get_vsid(mm->context.id, ea, MMU_SEGSIZE_256M) << SLB_VSID_SHIFT) | |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 179 | SLB_VSID_USER; |
arnd@arndb.de | 0afacde | 2006-10-24 18:31:18 +0200 | [diff] [blame] | 180 | break; |
| 181 | case VMALLOC_REGION_ID: |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 182 | if (ea < VMALLOC_END) |
| 183 | psize = mmu_vmalloc_psize; |
| 184 | else |
| 185 | psize = mmu_io_psize; |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 186 | vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M) << SLB_VSID_SHIFT) | |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 187 | SLB_VSID_KERNEL; |
arnd@arndb.de | 0afacde | 2006-10-24 18:31:18 +0200 | [diff] [blame] | 188 | break; |
| 189 | case KERNEL_REGION_ID: |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 190 | psize = mmu_linear_psize; |
Paul Mackerras | 1189be6 | 2007-10-11 20:37:10 +1000 | [diff] [blame] | 191 | vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M) << SLB_VSID_SHIFT) | |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 192 | SLB_VSID_KERNEL; |
arnd@arndb.de | 0afacde | 2006-10-24 18:31:18 +0200 | [diff] [blame] | 193 | break; |
| 194 | default: |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 195 | /* Future: support kernel segments so that drivers |
| 196 | * can use SPUs. |
| 197 | */ |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 198 | pr_debug("invalid region access at %016lx\n", ea); |
| 199 | return 1; |
| 200 | } |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 201 | llp = mmu_psize_defs[psize].sllp; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 202 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 203 | out_be64(&priv2->slb_index_W, spu->slb_replace); |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 204 | out_be64(&priv2->slb_vsid_RW, vsid | llp); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 205 | out_be64(&priv2->slb_esid_RW, esid); |
| 206 | |
| 207 | spu->slb_replace++; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 208 | if (spu->slb_replace >= 8) |
| 209 | spu->slb_replace = 0; |
| 210 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 211 | spu_restart_dma(spu); |
Christoph Hellwig | e9f8a0b | 2007-06-29 10:58:03 +1000 | [diff] [blame] | 212 | spu->stats.slb_flt++; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 213 | return 0; |
| 214 | } |
| 215 | |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 216 | extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap); //XXX |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 217 | static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 218 | { |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 219 | pr_debug("%s, %lx, %lx\n", __FUNCTION__, dsisr, ea); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 220 | |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 221 | /* Handle kernel space hash faults immediately. |
| 222 | User hash faults need to be deferred to process context. */ |
| 223 | if ((dsisr & MFC_DSISR_PTE_NOT_FOUND) |
| 224 | && REGION_ID(ea) != USER_REGION_ID |
| 225 | && hash_page(ea, _PAGE_PRESENT, 0x300) == 0) { |
| 226 | spu_restart_dma(spu); |
| 227 | return 0; |
| 228 | } |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 229 | |
Arnd Bergmann | 8837d92 | 2006-01-04 20:31:28 +0100 | [diff] [blame] | 230 | if (test_bit(SPU_CONTEXT_SWITCH_ACTIVE, &spu->flags)) { |
Mark Nutter | 5473af0 | 2005-11-15 15:53:49 -0500 | [diff] [blame] | 231 | printk("%s: invalid access during switch!\n", __func__); |
| 232 | return 1; |
| 233 | } |
| 234 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 235 | spu->dar = ea; |
| 236 | spu->dsisr = dsisr; |
| 237 | mb(); |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 238 | spu->stop_callback(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 239 | return 0; |
| 240 | } |
| 241 | |
| 242 | static irqreturn_t |
Olaf Hering | f5a9245 | 2006-10-06 22:52:16 +0200 | [diff] [blame] | 243 | spu_irq_class_0(int irq, void *data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 244 | { |
| 245 | struct spu *spu; |
Masato Noguchi | b7f90a4 | 2007-09-07 18:28:27 +1000 | [diff] [blame] | 246 | unsigned long stat, mask; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 247 | |
| 248 | spu = data; |
Masato Noguchi | b7f90a4 | 2007-09-07 18:28:27 +1000 | [diff] [blame] | 249 | |
| 250 | mask = spu_int_mask_get(spu, 0); |
| 251 | stat = spu_int_stat_get(spu, 0); |
| 252 | stat &= mask; |
| 253 | |
| 254 | spin_lock(&spu->register_lock); |
| 255 | spu->class_0_pending |= stat; |
| 256 | spin_unlock(&spu->register_lock); |
| 257 | |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 258 | spu->stop_callback(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 259 | |
Masato Noguchi | b7f90a4 | 2007-09-07 18:28:27 +1000 | [diff] [blame] | 260 | spu_int_stat_clear(spu, 0, stat); |
| 261 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 262 | return IRQ_HANDLED; |
| 263 | } |
| 264 | |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 265 | int |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 266 | spu_irq_class_0_bottom(struct spu *spu) |
| 267 | { |
Ishizaki Kou | 3650cfe | 2007-01-12 09:52:41 +0900 | [diff] [blame] | 268 | unsigned long flags; |
Masato Noguchi | b7f90a4 | 2007-09-07 18:28:27 +1000 | [diff] [blame] | 269 | unsigned long stat; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 270 | |
Ishizaki Kou | 3650cfe | 2007-01-12 09:52:41 +0900 | [diff] [blame] | 271 | spin_lock_irqsave(&spu->register_lock, flags); |
Masato Noguchi | b7f90a4 | 2007-09-07 18:28:27 +1000 | [diff] [blame] | 272 | stat = spu->class_0_pending; |
| 273 | spu->class_0_pending = 0; |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 274 | |
Arnd Bergmann | 2cd90bc | 2006-06-23 20:57:50 +0200 | [diff] [blame] | 275 | if (stat & 1) /* invalid DMA alignment */ |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 276 | __spu_trap_dma_align(spu); |
| 277 | |
Arnd Bergmann | 2cd90bc | 2006-06-23 20:57:50 +0200 | [diff] [blame] | 278 | if (stat & 2) /* invalid MFC DMA */ |
| 279 | __spu_trap_invalid_dma(spu); |
| 280 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 281 | if (stat & 4) /* error on SPU */ |
| 282 | __spu_trap_error(spu); |
| 283 | |
Ishizaki Kou | 3650cfe | 2007-01-12 09:52:41 +0900 | [diff] [blame] | 284 | spin_unlock_irqrestore(&spu->register_lock, flags); |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 285 | |
| 286 | return (stat & 0x7) ? -EIO : 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 287 | } |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 288 | EXPORT_SYMBOL_GPL(spu_irq_class_0_bottom); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 289 | |
| 290 | static irqreturn_t |
Olaf Hering | f5a9245 | 2006-10-06 22:52:16 +0200 | [diff] [blame] | 291 | spu_irq_class_1(int irq, void *data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 292 | { |
| 293 | struct spu *spu; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 294 | unsigned long stat, mask, dar, dsisr; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 295 | |
| 296 | spu = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 297 | |
| 298 | /* atomically read & clear class1 status. */ |
| 299 | spin_lock(&spu->register_lock); |
Arnd Bergmann | f0831ac | 2006-01-04 20:31:30 +0100 | [diff] [blame] | 300 | mask = spu_int_mask_get(spu, 1); |
| 301 | stat = spu_int_stat_get(spu, 1) & mask; |
| 302 | dar = spu_mfc_dar_get(spu); |
| 303 | dsisr = spu_mfc_dsisr_get(spu); |
Arnd Bergmann | 3830734 | 2005-12-09 19:04:18 +0100 | [diff] [blame] | 304 | if (stat & 2) /* mapping fault */ |
Arnd Bergmann | f0831ac | 2006-01-04 20:31:30 +0100 | [diff] [blame] | 305 | spu_mfc_dsisr_set(spu, 0ul); |
| 306 | spu_int_stat_clear(spu, 1, stat); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 307 | spin_unlock(&spu->register_lock); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 308 | pr_debug("%s: %lx %lx %lx %lx\n", __FUNCTION__, mask, stat, |
| 309 | dar, dsisr); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 310 | |
| 311 | if (stat & 1) /* segment fault */ |
| 312 | __spu_trap_data_seg(spu, dar); |
| 313 | |
| 314 | if (stat & 2) { /* mapping fault */ |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 315 | __spu_trap_data_map(spu, dar, dsisr); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | if (stat & 4) /* ls compare & suspend on get */ |
| 319 | ; |
| 320 | |
| 321 | if (stat & 8) /* ls compare & suspend on put */ |
| 322 | ; |
| 323 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 324 | return stat ? IRQ_HANDLED : IRQ_NONE; |
| 325 | } |
| 326 | |
| 327 | static irqreturn_t |
Olaf Hering | f5a9245 | 2006-10-06 22:52:16 +0200 | [diff] [blame] | 328 | spu_irq_class_2(int irq, void *data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 329 | { |
| 330 | struct spu *spu; |
| 331 | unsigned long stat; |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 332 | unsigned long mask; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 333 | |
| 334 | spu = data; |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 335 | spin_lock(&spu->register_lock); |
Arnd Bergmann | f0831ac | 2006-01-04 20:31:30 +0100 | [diff] [blame] | 336 | stat = spu_int_stat_get(spu, 2); |
| 337 | mask = spu_int_mask_get(spu, 2); |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 338 | /* ignore interrupts we're not waiting for */ |
| 339 | stat &= mask; |
| 340 | /* |
| 341 | * mailbox interrupts (0x1 and 0x10) are level triggered. |
| 342 | * mask them now before acknowledging. |
| 343 | */ |
| 344 | if (stat & 0x11) |
| 345 | spu_int_mask_and(spu, 2, ~(stat & 0x11)); |
| 346 | /* acknowledge all interrupts before the callbacks */ |
| 347 | spu_int_stat_clear(spu, 2, stat); |
| 348 | spin_unlock(&spu->register_lock); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 349 | |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 350 | pr_debug("class 2 interrupt %d, %lx, %lx\n", irq, stat, mask); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 351 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 352 | if (stat & 1) /* PPC core mailbox */ |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 353 | spu->ibox_callback(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 354 | |
| 355 | if (stat & 2) /* SPU stop-and-signal */ |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 356 | spu->stop_callback(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 357 | |
| 358 | if (stat & 4) /* SPU halted */ |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 359 | spu->stop_callback(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 360 | |
| 361 | if (stat & 8) /* DMA tag group complete */ |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 362 | spu->mfc_callback(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 363 | |
| 364 | if (stat & 0x10) /* SPU mailbox threshold */ |
Masato Noguchi | ba723fe2 | 2006-06-19 20:33:33 +0200 | [diff] [blame] | 365 | spu->wbox_callback(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 366 | |
Christoph Hellwig | e9f8a0b | 2007-06-29 10:58:03 +1000 | [diff] [blame] | 367 | spu->stats.class2_intr++; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 368 | return stat ? IRQ_HANDLED : IRQ_NONE; |
| 369 | } |
| 370 | |
Benjamin Herrenschmidt | 0ebfff1 | 2006-07-03 21:36:01 +1000 | [diff] [blame] | 371 | static int spu_request_irqs(struct spu *spu) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 372 | { |
Benjamin Herrenschmidt | 0ebfff1 | 2006-07-03 21:36:01 +1000 | [diff] [blame] | 373 | int ret = 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 374 | |
Benjamin Herrenschmidt | 0ebfff1 | 2006-07-03 21:36:01 +1000 | [diff] [blame] | 375 | if (spu->irqs[0] != NO_IRQ) { |
| 376 | snprintf(spu->irq_c0, sizeof (spu->irq_c0), "spe%02d.0", |
| 377 | spu->number); |
| 378 | ret = request_irq(spu->irqs[0], spu_irq_class_0, |
| 379 | IRQF_DISABLED, |
| 380 | spu->irq_c0, spu); |
| 381 | if (ret) |
| 382 | goto bail0; |
| 383 | } |
| 384 | if (spu->irqs[1] != NO_IRQ) { |
| 385 | snprintf(spu->irq_c1, sizeof (spu->irq_c1), "spe%02d.1", |
| 386 | spu->number); |
| 387 | ret = request_irq(spu->irqs[1], spu_irq_class_1, |
| 388 | IRQF_DISABLED, |
| 389 | spu->irq_c1, spu); |
| 390 | if (ret) |
| 391 | goto bail1; |
| 392 | } |
| 393 | if (spu->irqs[2] != NO_IRQ) { |
| 394 | snprintf(spu->irq_c2, sizeof (spu->irq_c2), "spe%02d.2", |
| 395 | spu->number); |
| 396 | ret = request_irq(spu->irqs[2], spu_irq_class_2, |
| 397 | IRQF_DISABLED, |
| 398 | spu->irq_c2, spu); |
| 399 | if (ret) |
| 400 | goto bail2; |
| 401 | } |
| 402 | return 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 403 | |
Benjamin Herrenschmidt | 0ebfff1 | 2006-07-03 21:36:01 +1000 | [diff] [blame] | 404 | bail2: |
| 405 | if (spu->irqs[1] != NO_IRQ) |
| 406 | free_irq(spu->irqs[1], spu); |
| 407 | bail1: |
| 408 | if (spu->irqs[0] != NO_IRQ) |
| 409 | free_irq(spu->irqs[0], spu); |
| 410 | bail0: |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 411 | return ret; |
| 412 | } |
| 413 | |
Benjamin Herrenschmidt | 0ebfff1 | 2006-07-03 21:36:01 +1000 | [diff] [blame] | 414 | static void spu_free_irqs(struct spu *spu) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 415 | { |
Benjamin Herrenschmidt | 0ebfff1 | 2006-07-03 21:36:01 +1000 | [diff] [blame] | 416 | if (spu->irqs[0] != NO_IRQ) |
| 417 | free_irq(spu->irqs[0], spu); |
| 418 | if (spu->irqs[1] != NO_IRQ) |
| 419 | free_irq(spu->irqs[1], spu); |
| 420 | if (spu->irqs[2] != NO_IRQ) |
| 421 | free_irq(spu->irqs[2], spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 422 | } |
| 423 | |
Christoph Hellwig | 486acd4 | 2007-07-20 21:39:54 +0200 | [diff] [blame] | 424 | void spu_init_channels(struct spu *spu) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 425 | { |
| 426 | static const struct { |
| 427 | unsigned channel; |
| 428 | unsigned count; |
| 429 | } zero_list[] = { |
| 430 | { 0x00, 1, }, { 0x01, 1, }, { 0x03, 1, }, { 0x04, 1, }, |
| 431 | { 0x18, 1, }, { 0x19, 1, }, { 0x1b, 1, }, { 0x1d, 1, }, |
| 432 | }, count_list[] = { |
| 433 | { 0x00, 0, }, { 0x03, 0, }, { 0x04, 0, }, { 0x15, 16, }, |
| 434 | { 0x17, 1, }, { 0x18, 0, }, { 0x19, 0, }, { 0x1b, 0, }, |
| 435 | { 0x1c, 1, }, { 0x1d, 0, }, { 0x1e, 1, }, |
| 436 | }; |
Arnd Bergmann | 6ff730c | 2006-01-04 20:31:31 +0100 | [diff] [blame] | 437 | struct spu_priv2 __iomem *priv2; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 438 | int i; |
| 439 | |
| 440 | priv2 = spu->priv2; |
| 441 | |
| 442 | /* initialize all channel data to zero */ |
| 443 | for (i = 0; i < ARRAY_SIZE(zero_list); i++) { |
| 444 | int count; |
| 445 | |
| 446 | out_be64(&priv2->spu_chnlcntptr_RW, zero_list[i].channel); |
| 447 | for (count = 0; count < zero_list[i].count; count++) |
| 448 | out_be64(&priv2->spu_chnldata_RW, 0); |
| 449 | } |
| 450 | |
| 451 | /* initialize channel counts to meaningful values */ |
| 452 | for (i = 0; i < ARRAY_SIZE(count_list); i++) { |
| 453 | out_be64(&priv2->spu_chnlcntptr_RW, count_list[i].channel); |
| 454 | out_be64(&priv2->spu_chnlcnt_RW, count_list[i].count); |
| 455 | } |
| 456 | } |
Christoph Hellwig | 486acd4 | 2007-07-20 21:39:54 +0200 | [diff] [blame] | 457 | EXPORT_SYMBOL_GPL(spu_init_channels); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 458 | |
Geoff Levand | 6deac06 | 2007-06-16 07:17:32 +1000 | [diff] [blame] | 459 | static int spu_shutdown(struct sys_device *sysdev) |
| 460 | { |
| 461 | struct spu *spu = container_of(sysdev, struct spu, sysdev); |
| 462 | |
| 463 | spu_free_irqs(spu); |
| 464 | spu_destroy_spu(spu); |
| 465 | return 0; |
| 466 | } |
| 467 | |
Sebastian Siewior | 1238819 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 468 | static struct sysdev_class spu_sysdev_class = { |
Geoff Levand | 6deac06 | 2007-06-16 07:17:32 +1000 | [diff] [blame] | 469 | set_kset_name("spu"), |
| 470 | .shutdown = spu_shutdown, |
Jeremy Kerr | 1d64093 | 2006-06-19 20:33:19 +0200 | [diff] [blame] | 471 | }; |
| 472 | |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 473 | int spu_add_sysdev_attr(struct sysdev_attribute *attr) |
| 474 | { |
| 475 | struct spu *spu; |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 476 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 477 | mutex_lock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 478 | list_for_each_entry(spu, &spu_full_list, full_list) |
| 479 | sysdev_create_file(&spu->sysdev, attr); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 480 | mutex_unlock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 481 | |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 482 | return 0; |
| 483 | } |
| 484 | EXPORT_SYMBOL_GPL(spu_add_sysdev_attr); |
| 485 | |
| 486 | int spu_add_sysdev_attr_group(struct attribute_group *attrs) |
| 487 | { |
| 488 | struct spu *spu; |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 489 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 490 | mutex_lock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 491 | list_for_each_entry(spu, &spu_full_list, full_list) |
| 492 | sysfs_create_group(&spu->sysdev.kobj, attrs); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 493 | mutex_unlock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 494 | |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 495 | return 0; |
| 496 | } |
| 497 | EXPORT_SYMBOL_GPL(spu_add_sysdev_attr_group); |
| 498 | |
| 499 | |
| 500 | void spu_remove_sysdev_attr(struct sysdev_attribute *attr) |
| 501 | { |
| 502 | struct spu *spu; |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 503 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 504 | mutex_lock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 505 | list_for_each_entry(spu, &spu_full_list, full_list) |
| 506 | sysdev_remove_file(&spu->sysdev, attr); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 507 | mutex_unlock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 508 | } |
| 509 | EXPORT_SYMBOL_GPL(spu_remove_sysdev_attr); |
| 510 | |
| 511 | void spu_remove_sysdev_attr_group(struct attribute_group *attrs) |
| 512 | { |
| 513 | struct spu *spu; |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 514 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 515 | mutex_lock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 516 | list_for_each_entry(spu, &spu_full_list, full_list) |
| 517 | sysfs_remove_group(&spu->sysdev.kobj, attrs); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 518 | mutex_unlock(&spu_full_list_mutex); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 519 | } |
| 520 | EXPORT_SYMBOL_GPL(spu_remove_sysdev_attr_group); |
| 521 | |
Jeremy Kerr | 1d64093 | 2006-06-19 20:33:19 +0200 | [diff] [blame] | 522 | static int spu_create_sysdev(struct spu *spu) |
| 523 | { |
| 524 | int ret; |
| 525 | |
| 526 | spu->sysdev.id = spu->number; |
| 527 | spu->sysdev.cls = &spu_sysdev_class; |
| 528 | ret = sysdev_register(&spu->sysdev); |
| 529 | if (ret) { |
| 530 | printk(KERN_ERR "Can't register SPU %d with sysfs\n", |
| 531 | spu->number); |
| 532 | return ret; |
| 533 | } |
| 534 | |
Geoff Levand | 0021550 | 2006-11-20 18:45:02 +0100 | [diff] [blame] | 535 | sysfs_add_device_to_node(&spu->sysdev, spu->node); |
Jeremy Kerr | 1d64093 | 2006-06-19 20:33:19 +0200 | [diff] [blame] | 536 | |
| 537 | return 0; |
| 538 | } |
| 539 | |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 540 | static int __init create_spu(void *data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 541 | { |
| 542 | struct spu *spu; |
| 543 | int ret; |
| 544 | static int number; |
Benjamin Herrenschmidt | 94b2a43 | 2007-03-10 00:05:37 +0100 | [diff] [blame] | 545 | unsigned long flags; |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 546 | struct timespec ts; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 547 | |
| 548 | ret = -ENOMEM; |
Jeremy Kerr | ecec217 | 2006-06-19 20:33:26 +0200 | [diff] [blame] | 549 | spu = kzalloc(sizeof (*spu), GFP_KERNEL); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 550 | if (!spu) |
| 551 | goto out; |
| 552 | |
Christoph Hellwig | 486acd4 | 2007-07-20 21:39:54 +0200 | [diff] [blame] | 553 | spu->alloc_state = SPU_FREE; |
| 554 | |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 555 | spin_lock_init(&spu->register_lock); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 556 | spin_lock(&spu_lock); |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 557 | spu->number = number++; |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 558 | spin_unlock(&spu_lock); |
Benjamin Herrenschmidt | e5267b4 | 2006-10-10 15:14:12 +1000 | [diff] [blame] | 559 | |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 560 | ret = spu_create_spu(spu, data); |
| 561 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 562 | if (ret) |
| 563 | goto out_free; |
| 564 | |
Masato Noguchi | 24f43b3 | 2006-10-24 18:31:14 +0200 | [diff] [blame] | 565 | spu_mfc_sdr_setup(spu); |
Arnd Bergmann | f0831ac | 2006-01-04 20:31:30 +0100 | [diff] [blame] | 566 | spu_mfc_sr1_set(spu, 0x33); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 567 | ret = spu_request_irqs(spu); |
| 568 | if (ret) |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 569 | goto out_destroy; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 570 | |
Jeremy Kerr | 1d64093 | 2006-06-19 20:33:19 +0200 | [diff] [blame] | 571 | ret = spu_create_sysdev(spu); |
| 572 | if (ret) |
| 573 | goto out_free_irqs; |
| 574 | |
Christoph Hellwig | 486acd4 | 2007-07-20 21:39:54 +0200 | [diff] [blame] | 575 | mutex_lock(&cbe_spu_info[spu->node].list_mutex); |
Arnd Bergmann | aa6d5b2 | 2007-07-20 21:39:44 +0200 | [diff] [blame] | 576 | list_add(&spu->cbe_list, &cbe_spu_info[spu->node].spus); |
| 577 | cbe_spu_info[spu->node].n_spus++; |
Christoph Hellwig | 486acd4 | 2007-07-20 21:39:54 +0200 | [diff] [blame] | 578 | mutex_unlock(&cbe_spu_info[spu->node].list_mutex); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 579 | |
| 580 | mutex_lock(&spu_full_list_mutex); |
| 581 | spin_lock_irqsave(&spu_full_list_lock, flags); |
Christian Krafft | e570beb | 2006-10-24 18:31:23 +0200 | [diff] [blame] | 582 | list_add(&spu->full_list, &spu_full_list); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 583 | spin_unlock_irqrestore(&spu_full_list_lock, flags); |
| 584 | mutex_unlock(&spu_full_list_mutex); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 585 | |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 586 | spu->stats.util_state = SPU_UTIL_IDLE_LOADED; |
| 587 | ktime_get_ts(&ts); |
| 588 | spu->stats.tstamp = timespec_to_ns(&ts); |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 589 | |
Arnd Bergmann | 9d92af6 | 2007-07-20 21:39:45 +0200 | [diff] [blame] | 590 | INIT_LIST_HEAD(&spu->aff_list); |
| 591 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 592 | goto out; |
| 593 | |
Jeremy Kerr | 1d64093 | 2006-06-19 20:33:19 +0200 | [diff] [blame] | 594 | out_free_irqs: |
| 595 | spu_free_irqs(spu); |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 596 | out_destroy: |
| 597 | spu_destroy_spu(spu); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 598 | out_free: |
| 599 | kfree(spu); |
| 600 | out: |
| 601 | return ret; |
| 602 | } |
| 603 | |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 604 | static const char *spu_state_names[] = { |
| 605 | "user", "system", "iowait", "idle" |
| 606 | }; |
| 607 | |
| 608 | static unsigned long long spu_acct_time(struct spu *spu, |
| 609 | enum spu_utilization_state state) |
| 610 | { |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 611 | struct timespec ts; |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 612 | unsigned long long time = spu->stats.times[state]; |
| 613 | |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 614 | /* |
| 615 | * If the spu is idle or the context is stopped, utilization |
| 616 | * statistics are not updated. Apply the time delta from the |
| 617 | * last recorded state of the spu. |
| 618 | */ |
| 619 | if (spu->stats.util_state == state) { |
| 620 | ktime_get_ts(&ts); |
| 621 | time += timespec_to_ns(&ts) - spu->stats.tstamp; |
| 622 | } |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 623 | |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 624 | return time / NSEC_PER_MSEC; |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | |
| 628 | static ssize_t spu_stat_show(struct sys_device *sysdev, char *buf) |
| 629 | { |
| 630 | struct spu *spu = container_of(sysdev, struct spu, sysdev); |
| 631 | |
| 632 | return sprintf(buf, "%s %llu %llu %llu %llu " |
| 633 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 634 | spu_state_names[spu->stats.util_state], |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 635 | spu_acct_time(spu, SPU_UTIL_USER), |
| 636 | spu_acct_time(spu, SPU_UTIL_SYSTEM), |
| 637 | spu_acct_time(spu, SPU_UTIL_IOWAIT), |
Andre Detsch | 27ec41d | 2007-07-20 21:39:33 +0200 | [diff] [blame] | 638 | spu_acct_time(spu, SPU_UTIL_IDLE_LOADED), |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 639 | spu->stats.vol_ctx_switch, |
| 640 | spu->stats.invol_ctx_switch, |
| 641 | spu->stats.slb_flt, |
| 642 | spu->stats.hash_flt, |
| 643 | spu->stats.min_flt, |
| 644 | spu->stats.maj_flt, |
| 645 | spu->stats.class2_intr, |
| 646 | spu->stats.libassist); |
| 647 | } |
| 648 | |
| 649 | static SYSDEV_ATTR(stat, 0644, spu_stat_show, NULL); |
| 650 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 651 | static int __init init_spu_base(void) |
| 652 | { |
Christoph Hellwig | befdc74 | 2007-04-23 21:08:28 +0200 | [diff] [blame] | 653 | int i, ret = 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 654 | |
Arnd Bergmann | aa6d5b2 | 2007-07-20 21:39:44 +0200 | [diff] [blame] | 655 | for (i = 0; i < MAX_NUMNODES; i++) { |
Christoph Hellwig | 486acd4 | 2007-07-20 21:39:54 +0200 | [diff] [blame] | 656 | mutex_init(&cbe_spu_info[i].list_mutex); |
Arnd Bergmann | aa6d5b2 | 2007-07-20 21:39:44 +0200 | [diff] [blame] | 657 | INIT_LIST_HEAD(&cbe_spu_info[i].spus); |
Arnd Bergmann | aa6d5b2 | 2007-07-20 21:39:44 +0200 | [diff] [blame] | 658 | } |
Jeremy Kerr | ccf17e9 | 2007-04-23 21:08:29 +0200 | [diff] [blame] | 659 | |
Stephen Rothwell | da06aa0 | 2006-11-27 19:18:54 +0100 | [diff] [blame] | 660 | if (!spu_management_ops) |
Christoph Hellwig | befdc74 | 2007-04-23 21:08:28 +0200 | [diff] [blame] | 661 | goto out; |
Stephen Rothwell | da06aa0 | 2006-11-27 19:18:54 +0100 | [diff] [blame] | 662 | |
Jeremy Kerr | 1d64093 | 2006-06-19 20:33:19 +0200 | [diff] [blame] | 663 | /* create sysdev class for spus */ |
| 664 | ret = sysdev_class_register(&spu_sysdev_class); |
| 665 | if (ret) |
Christoph Hellwig | befdc74 | 2007-04-23 21:08:28 +0200 | [diff] [blame] | 666 | goto out; |
Jeremy Kerr | 1d64093 | 2006-06-19 20:33:19 +0200 | [diff] [blame] | 667 | |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 668 | ret = spu_enumerate_spus(create_spu); |
| 669 | |
Geert Uytterhoeven | bce9451 | 2007-07-17 04:05:52 -0700 | [diff] [blame] | 670 | if (ret < 0) { |
Geoff Levand | e28b003 | 2006-11-23 00:46:49 +0100 | [diff] [blame] | 671 | printk(KERN_WARNING "%s: Error initializing spus\n", |
| 672 | __FUNCTION__); |
Christoph Hellwig | befdc74 | 2007-04-23 21:08:28 +0200 | [diff] [blame] | 673 | goto out_unregister_sysdev_class; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 674 | } |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 675 | |
Geert Uytterhoeven | bce9451 | 2007-07-17 04:05:52 -0700 | [diff] [blame] | 676 | if (ret > 0) { |
| 677 | /* |
| 678 | * We cannot put the forward declaration in |
| 679 | * <linux/linux_logo.h> because of conflicting session type |
| 680 | * conflicts for const and __initdata with different compiler |
| 681 | * versions |
| 682 | */ |
| 683 | extern const struct linux_logo logo_spe_clut224; |
| 684 | |
| 685 | fb_append_extra_logo(&logo_spe_clut224, ret); |
| 686 | } |
| 687 | |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 688 | mutex_lock(&spu_full_list_mutex); |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 689 | xmon_register_spus(&spu_full_list); |
Andre Detsch | 8d2655e | 2007-07-20 21:39:27 +0200 | [diff] [blame] | 690 | crash_register_spus(&spu_full_list); |
Christoph Hellwig | 2414059 | 2007-07-20 21:39:51 +0200 | [diff] [blame] | 691 | mutex_unlock(&spu_full_list_mutex); |
Christoph Hellwig | fe2f896 | 2007-06-29 10:58:07 +1000 | [diff] [blame] | 692 | spu_add_sysdev_attr(&attr_stat); |
| 693 | |
Andre Detsch | f599644 | 2007-08-03 18:53:46 -0700 | [diff] [blame] | 694 | spu_init_affinity(); |
Arnd Bergmann | 3ad216c | 2007-07-20 21:39:46 +0200 | [diff] [blame] | 695 | |
Christoph Hellwig | befdc74 | 2007-04-23 21:08:28 +0200 | [diff] [blame] | 696 | return 0; |
| 697 | |
| 698 | out_unregister_sysdev_class: |
| 699 | sysdev_class_unregister(&spu_sysdev_class); |
| 700 | out: |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 701 | return ret; |
| 702 | } |
| 703 | module_init(init_spu_base); |
| 704 | |
| 705 | MODULE_LICENSE("GPL"); |
| 706 | MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); |