Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1 | /* |
| 2 | * SPU file system -- file contents |
| 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 | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 23 | #undef DEBUG |
| 24 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 25 | #include <linux/fs.h> |
| 26 | #include <linux/ioctl.h> |
| 27 | #include <linux/module.h> |
Arnd Bergmann | d88cfff | 2005-12-05 22:52:22 -0500 | [diff] [blame] | 28 | #include <linux/pagemap.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 29 | #include <linux/poll.h> |
Arnd Bergmann | 5110459 | 2005-12-05 22:52:25 -0500 | [diff] [blame] | 30 | #include <linux/ptrace.h> |
Benjamin Herrenschmidt | cbe709c | 2007-06-04 15:15:38 +1000 | [diff] [blame] | 31 | #include <linux/seq_file.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 32 | |
| 33 | #include <asm/io.h> |
| 34 | #include <asm/semaphore.h> |
| 35 | #include <asm/spu.h> |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 36 | #include <asm/spu_info.h> |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 37 | #include <asm/uaccess.h> |
| 38 | |
| 39 | #include "spufs.h" |
| 40 | |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 41 | #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) |
| 42 | |
Benjamin Herrenschmidt | cbe709c | 2007-06-04 15:15:38 +1000 | [diff] [blame] | 43 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 44 | static int |
| 45 | spufs_mem_open(struct inode *inode, struct file *file) |
| 46 | { |
| 47 | struct spufs_inode_info *i = SPUFS_I(inode); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 48 | struct spu_context *ctx = i->i_ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 49 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 50 | mutex_lock(&ctx->mapping_lock); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 51 | file->private_data = ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 52 | if (!i->i_openers++) |
| 53 | ctx->local_store = inode->i_mapping; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 54 | mutex_unlock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static int |
| 59 | spufs_mem_release(struct inode *inode, struct file *file) |
| 60 | { |
| 61 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 62 | struct spu_context *ctx = i->i_ctx; |
| 63 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 64 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 65 | if (!--i->i_openers) |
| 66 | ctx->local_store = NULL; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 67 | mutex_unlock(&ctx->mapping_lock); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | static ssize_t |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 72 | __spufs_mem_read(struct spu_context *ctx, char __user *buffer, |
| 73 | size_t size, loff_t *pos) |
| 74 | { |
| 75 | char *local_store = ctx->ops->get_ls(ctx); |
| 76 | return simple_read_from_buffer(buffer, size, pos, local_store, |
| 77 | LS_SIZE); |
| 78 | } |
| 79 | |
| 80 | static ssize_t |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 81 | spufs_mem_read(struct file *file, char __user *buffer, |
| 82 | size_t size, loff_t *pos) |
| 83 | { |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 84 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | aa0ed2b | 2007-03-10 00:05:35 +0100 | [diff] [blame] | 85 | ssize_t ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 86 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 87 | spu_acquire(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 88 | ret = __spufs_mem_read(ctx, buffer, size, pos); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 89 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 90 | return ret; |
| 91 | } |
| 92 | |
| 93 | static ssize_t |
| 94 | spufs_mem_write(struct file *file, const char __user *buffer, |
Arnd Bergmann | aa0ed2b | 2007-03-10 00:05:35 +0100 | [diff] [blame] | 95 | size_t size, loff_t *ppos) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 96 | { |
| 97 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 98 | char *local_store; |
Arnd Bergmann | aa0ed2b | 2007-03-10 00:05:35 +0100 | [diff] [blame] | 99 | loff_t pos = *ppos; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 100 | int ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 101 | |
Arnd Bergmann | aa0ed2b | 2007-03-10 00:05:35 +0100 | [diff] [blame] | 102 | if (pos < 0) |
| 103 | return -EINVAL; |
| 104 | if (pos > LS_SIZE) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 105 | return -EFBIG; |
Arnd Bergmann | aa0ed2b | 2007-03-10 00:05:35 +0100 | [diff] [blame] | 106 | if (size > LS_SIZE - pos) |
| 107 | size = LS_SIZE - pos; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 108 | |
| 109 | spu_acquire(ctx); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 110 | local_store = ctx->ops->get_ls(ctx); |
Arnd Bergmann | aa0ed2b | 2007-03-10 00:05:35 +0100 | [diff] [blame] | 111 | ret = copy_from_user(local_store + pos, buffer, size); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 112 | spu_release(ctx); |
Arnd Bergmann | aa0ed2b | 2007-03-10 00:05:35 +0100 | [diff] [blame] | 113 | |
| 114 | if (ret) |
| 115 | return -EFAULT; |
| 116 | *ppos = pos + size; |
| 117 | return size; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 118 | } |
| 119 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 120 | static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma, |
| 121 | unsigned long address) |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 122 | { |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 123 | struct spu_context *ctx = vma->vm_file->private_data; |
| 124 | unsigned long pfn, offset, addr0 = address; |
| 125 | #ifdef CONFIG_SPU_FS_64K_LS |
| 126 | struct spu_state *csa = &ctx->csa; |
| 127 | int psize; |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 128 | |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 129 | /* Check what page size we are using */ |
| 130 | psize = get_slice_psize(vma->vm_mm, address); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 131 | |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 132 | /* Some sanity checking */ |
| 133 | BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); |
| 134 | |
| 135 | /* Wow, 64K, cool, we need to align the address though */ |
| 136 | if (csa->use_big_pages) { |
| 137 | BUG_ON(vma->vm_start & 0xffff); |
| 138 | address &= ~0xfffful; |
| 139 | } |
| 140 | #endif /* CONFIG_SPU_FS_64K_LS */ |
| 141 | |
| 142 | offset = (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT); |
Masato Noguchi | 128b854 | 2007-02-13 21:54:30 +0100 | [diff] [blame] | 143 | if (offset >= LS_SIZE) |
| 144 | return NOPFN_SIGBUS; |
| 145 | |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 146 | pr_debug("spufs_mem_mmap_nopfn address=0x%lx -> 0x%lx, offset=0x%lx\n", |
| 147 | addr0, address, offset); |
| 148 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 149 | spu_acquire(ctx); |
| 150 | |
Arnd Bergmann | ac91cb8 | 2006-10-04 17:26:16 +0200 | [diff] [blame] | 151 | if (ctx->state == SPU_STATE_SAVED) { |
| 152 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
Arnd Bergmann | 932f535 | 2006-11-20 18:45:06 +0100 | [diff] [blame] | 153 | & ~_PAGE_NO_CACHE); |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 154 | pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); |
Arnd Bergmann | ac91cb8 | 2006-10-04 17:26:16 +0200 | [diff] [blame] | 155 | } else { |
| 156 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 157 | | _PAGE_NO_CACHE); |
| 158 | pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; |
Arnd Bergmann | ac91cb8 | 2006-10-04 17:26:16 +0200 | [diff] [blame] | 159 | } |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 160 | vm_insert_pfn(vma, address, pfn); |
| 161 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 162 | spu_release(ctx); |
| 163 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 164 | return NOPFN_REFAULT; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 165 | } |
| 166 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 167 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 168 | static struct vm_operations_struct spufs_mem_mmap_vmops = { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 169 | .nopfn = spufs_mem_mmap_nopfn, |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 170 | }; |
| 171 | |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 172 | static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 173 | { |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 174 | #ifdef CONFIG_SPU_FS_64K_LS |
| 175 | struct spu_context *ctx = file->private_data; |
| 176 | struct spu_state *csa = &ctx->csa; |
| 177 | |
| 178 | /* Sanity check VMA alignment */ |
| 179 | if (csa->use_big_pages) { |
| 180 | pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," |
| 181 | " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, |
| 182 | vma->vm_pgoff); |
| 183 | if (vma->vm_start & 0xffff) |
| 184 | return -EINVAL; |
| 185 | if (vma->vm_pgoff & 0xf) |
| 186 | return -EINVAL; |
| 187 | } |
| 188 | #endif /* CONFIG_SPU_FS_64K_LS */ |
| 189 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 190 | if (!(vma->vm_flags & VM_SHARED)) |
| 191 | return -EINVAL; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 192 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 193 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 194 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 195 | | _PAGE_NO_CACHE); |
| 196 | |
| 197 | vma->vm_ops = &spufs_mem_mmap_vmops; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 198 | return 0; |
| 199 | } |
| 200 | |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 201 | #ifdef CONFIG_SPU_FS_64K_LS |
| 202 | unsigned long spufs_get_unmapped_area(struct file *file, unsigned long addr, |
| 203 | unsigned long len, unsigned long pgoff, |
| 204 | unsigned long flags) |
| 205 | { |
| 206 | struct spu_context *ctx = file->private_data; |
| 207 | struct spu_state *csa = &ctx->csa; |
| 208 | |
| 209 | /* If not using big pages, fallback to normal MM g_u_a */ |
| 210 | if (!csa->use_big_pages) |
| 211 | return current->mm->get_unmapped_area(file, addr, len, |
| 212 | pgoff, flags); |
| 213 | |
| 214 | /* Else, try to obtain a 64K pages slice */ |
| 215 | return slice_get_unmapped_area(addr, len, flags, |
| 216 | MMU_PAGE_64K, 1, 0); |
| 217 | } |
| 218 | #endif /* CONFIG_SPU_FS_64K_LS */ |
| 219 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 220 | static const struct file_operations spufs_mem_fops = { |
Jeremy Kerr | 7022543 | 2007-06-29 10:58:00 +1000 | [diff] [blame] | 221 | .open = spufs_mem_open, |
| 222 | .release = spufs_mem_release, |
| 223 | .read = spufs_mem_read, |
| 224 | .write = spufs_mem_write, |
| 225 | .llseek = generic_file_llseek, |
| 226 | .mmap = spufs_mem_mmap, |
Benjamin Herrenschmidt | f1fa74f | 2007-05-08 16:27:29 +1000 | [diff] [blame] | 227 | #ifdef CONFIG_SPU_FS_64K_LS |
| 228 | .get_unmapped_area = spufs_get_unmapped_area, |
| 229 | #endif |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 230 | }; |
| 231 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 232 | static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 233 | unsigned long address, |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 234 | unsigned long ps_offs, |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 235 | unsigned long ps_size) |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 236 | { |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 237 | struct spu_context *ctx = vma->vm_file->private_data; |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 238 | unsigned long area, offset = address - vma->vm_start; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 239 | int ret; |
| 240 | |
| 241 | offset += vma->vm_pgoff << PAGE_SHIFT; |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 242 | if (offset >= ps_size) |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 243 | return NOPFN_SIGBUS; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 244 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 245 | /* error here usually means a signal.. we might want to test |
| 246 | * the error code more precisely though |
| 247 | */ |
Christoph Hellwig | 26bec67 | 2007-02-13 21:54:24 +0100 | [diff] [blame] | 248 | ret = spu_acquire_runnable(ctx, 0); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 249 | if (ret) |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 250 | return NOPFN_REFAULT; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 251 | |
| 252 | area = ctx->spu->problem_phys + ps_offs; |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 253 | vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 254 | spu_release(ctx); |
| 255 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 256 | return NOPFN_REFAULT; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 257 | } |
| 258 | |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 259 | #if SPUFS_MMAP_4K |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 260 | static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma, |
| 261 | unsigned long address) |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 262 | { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 263 | return spufs_ps_nopfn(vma, address, 0x4000, 0x1000); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | static struct vm_operations_struct spufs_cntl_mmap_vmops = { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 267 | .nopfn = spufs_cntl_mmap_nopfn, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 268 | }; |
| 269 | |
| 270 | /* |
| 271 | * mmap support for problem state control area [0x4000 - 0x4fff]. |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 272 | */ |
| 273 | static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) |
| 274 | { |
| 275 | if (!(vma->vm_flags & VM_SHARED)) |
| 276 | return -EINVAL; |
| 277 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 278 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 279 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
Benjamin Herrenschmidt | 23cc770 | 2006-06-23 20:57:47 +0200 | [diff] [blame] | 280 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 281 | |
| 282 | vma->vm_ops = &spufs_cntl_mmap_vmops; |
| 283 | return 0; |
| 284 | } |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 285 | #else /* SPUFS_MMAP_4K */ |
| 286 | #define spufs_cntl_mmap NULL |
| 287 | #endif /* !SPUFS_MMAP_4K */ |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 288 | |
Arnd Bergmann | e1dbff2 | 2006-10-04 17:26:19 +0200 | [diff] [blame] | 289 | static u64 spufs_cntl_get(void *data) |
| 290 | { |
| 291 | struct spu_context *ctx = data; |
| 292 | u64 val; |
| 293 | |
| 294 | spu_acquire(ctx); |
| 295 | val = ctx->ops->status_read(ctx); |
| 296 | spu_release(ctx); |
| 297 | |
| 298 | return val; |
| 299 | } |
| 300 | |
| 301 | static void spufs_cntl_set(void *data, u64 val) |
| 302 | { |
| 303 | struct spu_context *ctx = data; |
| 304 | |
| 305 | spu_acquire(ctx); |
| 306 | ctx->ops->runcntl_write(ctx, val); |
| 307 | spu_release(ctx); |
| 308 | } |
| 309 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 310 | static int spufs_cntl_open(struct inode *inode, struct file *file) |
| 311 | { |
| 312 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 313 | struct spu_context *ctx = i->i_ctx; |
| 314 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 315 | mutex_lock(&ctx->mapping_lock); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 316 | file->private_data = ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 317 | if (!i->i_openers++) |
| 318 | ctx->cntl = inode->i_mapping; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 319 | mutex_unlock(&ctx->mapping_lock); |
Arnd Bergmann | e1dbff2 | 2006-10-04 17:26:19 +0200 | [diff] [blame] | 320 | return simple_attr_open(inode, file, spufs_cntl_get, |
| 321 | spufs_cntl_set, "0x%08lx"); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 322 | } |
| 323 | |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 324 | static int |
| 325 | spufs_cntl_release(struct inode *inode, struct file *file) |
| 326 | { |
| 327 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 328 | struct spu_context *ctx = i->i_ctx; |
| 329 | |
| 330 | simple_attr_close(inode, file); |
| 331 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 332 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 333 | if (!--i->i_openers) |
| 334 | ctx->cntl = NULL; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 335 | mutex_unlock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 336 | return 0; |
| 337 | } |
| 338 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 339 | static const struct file_operations spufs_cntl_fops = { |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 340 | .open = spufs_cntl_open, |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 341 | .release = spufs_cntl_release, |
Arnd Bergmann | e1dbff2 | 2006-10-04 17:26:19 +0200 | [diff] [blame] | 342 | .read = simple_attr_read, |
| 343 | .write = simple_attr_write, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 344 | .mmap = spufs_cntl_mmap, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 345 | }; |
| 346 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 347 | static int |
| 348 | spufs_regs_open(struct inode *inode, struct file *file) |
| 349 | { |
| 350 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 351 | file->private_data = i->i_ctx; |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static ssize_t |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 356 | __spufs_regs_read(struct spu_context *ctx, char __user *buffer, |
| 357 | size_t size, loff_t *pos) |
| 358 | { |
| 359 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 360 | return simple_read_from_buffer(buffer, size, pos, |
| 361 | lscsa->gprs, sizeof lscsa->gprs); |
| 362 | } |
| 363 | |
| 364 | static ssize_t |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 365 | spufs_regs_read(struct file *file, char __user *buffer, |
| 366 | size_t size, loff_t *pos) |
| 367 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 368 | int ret; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 369 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 370 | |
| 371 | spu_acquire_saved(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 372 | ret = __spufs_regs_read(ctx, buffer, size, pos); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 373 | spu_release(ctx); |
| 374 | return ret; |
| 375 | } |
| 376 | |
| 377 | static ssize_t |
| 378 | spufs_regs_write(struct file *file, const char __user *buffer, |
| 379 | size_t size, loff_t *pos) |
| 380 | { |
| 381 | struct spu_context *ctx = file->private_data; |
| 382 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 383 | int ret; |
| 384 | |
| 385 | size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); |
| 386 | if (size <= 0) |
| 387 | return -EFBIG; |
| 388 | *pos += size; |
| 389 | |
| 390 | spu_acquire_saved(ctx); |
| 391 | |
| 392 | ret = copy_from_user(lscsa->gprs + *pos - size, |
| 393 | buffer, size) ? -EFAULT : size; |
| 394 | |
| 395 | spu_release(ctx); |
| 396 | return ret; |
| 397 | } |
| 398 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 399 | static const struct file_operations spufs_regs_fops = { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 400 | .open = spufs_regs_open, |
| 401 | .read = spufs_regs_read, |
| 402 | .write = spufs_regs_write, |
| 403 | .llseek = generic_file_llseek, |
| 404 | }; |
| 405 | |
| 406 | static ssize_t |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 407 | __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, |
| 408 | size_t size, loff_t * pos) |
| 409 | { |
| 410 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 411 | return simple_read_from_buffer(buffer, size, pos, |
| 412 | &lscsa->fpcr, sizeof(lscsa->fpcr)); |
| 413 | } |
| 414 | |
| 415 | static ssize_t |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 416 | spufs_fpcr_read(struct file *file, char __user * buffer, |
| 417 | size_t size, loff_t * pos) |
| 418 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 419 | int ret; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 420 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 421 | |
| 422 | spu_acquire_saved(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 423 | ret = __spufs_fpcr_read(ctx, buffer, size, pos); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 424 | spu_release(ctx); |
| 425 | return ret; |
| 426 | } |
| 427 | |
| 428 | static ssize_t |
| 429 | spufs_fpcr_write(struct file *file, const char __user * buffer, |
| 430 | size_t size, loff_t * pos) |
| 431 | { |
| 432 | struct spu_context *ctx = file->private_data; |
| 433 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 434 | int ret; |
| 435 | |
| 436 | size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); |
| 437 | if (size <= 0) |
| 438 | return -EFBIG; |
| 439 | *pos += size; |
| 440 | |
| 441 | spu_acquire_saved(ctx); |
| 442 | |
| 443 | ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, |
| 444 | buffer, size) ? -EFAULT : size; |
| 445 | |
| 446 | spu_release(ctx); |
| 447 | return ret; |
| 448 | } |
| 449 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 450 | static const struct file_operations spufs_fpcr_fops = { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 451 | .open = spufs_regs_open, |
| 452 | .read = spufs_fpcr_read, |
| 453 | .write = spufs_fpcr_write, |
| 454 | .llseek = generic_file_llseek, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 455 | }; |
| 456 | |
| 457 | /* generic open function for all pipe-like files */ |
| 458 | static int spufs_pipe_open(struct inode *inode, struct file *file) |
| 459 | { |
| 460 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 461 | file->private_data = i->i_ctx; |
| 462 | |
| 463 | return nonseekable_open(inode, file); |
| 464 | } |
| 465 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 466 | /* |
| 467 | * Read as many bytes from the mailbox as possible, until |
| 468 | * one of the conditions becomes true: |
| 469 | * |
| 470 | * - no more data available in the mailbox |
| 471 | * - end of the user provided buffer |
| 472 | * - end of the mapped area |
| 473 | */ |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 474 | static ssize_t spufs_mbox_read(struct file *file, char __user *buf, |
| 475 | size_t len, loff_t *pos) |
| 476 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 477 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 478 | u32 mbox_data, __user *udata; |
| 479 | ssize_t count; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 480 | |
| 481 | if (len < 4) |
| 482 | return -EINVAL; |
| 483 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 484 | if (!access_ok(VERIFY_WRITE, buf, len)) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 485 | return -EFAULT; |
| 486 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 487 | udata = (void __user *)buf; |
| 488 | |
| 489 | spu_acquire(ctx); |
Arnd Bergmann | 274cef5 | 2006-10-24 18:01:42 +0200 | [diff] [blame] | 490 | for (count = 0; (count + 4) <= len; count += 4, udata++) { |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 491 | int ret; |
| 492 | ret = ctx->ops->mbox_read(ctx, &mbox_data); |
| 493 | if (ret == 0) |
| 494 | break; |
| 495 | |
| 496 | /* |
| 497 | * at the end of the mapped area, we can fault |
| 498 | * but still need to return the data we have |
| 499 | * read successfully so far. |
| 500 | */ |
| 501 | ret = __put_user(mbox_data, udata); |
| 502 | if (ret) { |
| 503 | if (!count) |
| 504 | count = -EFAULT; |
| 505 | break; |
| 506 | } |
| 507 | } |
| 508 | spu_release(ctx); |
| 509 | |
| 510 | if (!count) |
| 511 | count = -EAGAIN; |
| 512 | |
| 513 | return count; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 514 | } |
| 515 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 516 | static const struct file_operations spufs_mbox_fops = { |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 517 | .open = spufs_pipe_open, |
| 518 | .read = spufs_mbox_read, |
| 519 | }; |
| 520 | |
| 521 | static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, |
| 522 | size_t len, loff_t *pos) |
| 523 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 524 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 525 | u32 mbox_stat; |
| 526 | |
| 527 | if (len < 4) |
| 528 | return -EINVAL; |
| 529 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 530 | spu_acquire(ctx); |
| 531 | |
| 532 | mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; |
| 533 | |
| 534 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 535 | |
| 536 | if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) |
| 537 | return -EFAULT; |
| 538 | |
| 539 | return 4; |
| 540 | } |
| 541 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 542 | static const struct file_operations spufs_mbox_stat_fops = { |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 543 | .open = spufs_pipe_open, |
| 544 | .read = spufs_mbox_stat_read, |
| 545 | }; |
| 546 | |
| 547 | /* low-level ibox access function */ |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 548 | size_t spu_ibox_read(struct spu_context *ctx, u32 *data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 549 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 550 | return ctx->ops->ibox_read(ctx, data); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 551 | } |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 552 | |
| 553 | static int spufs_ibox_fasync(int fd, struct file *file, int on) |
| 554 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 555 | struct spu_context *ctx = file->private_data; |
| 556 | |
| 557 | return fasync_helper(fd, file, on, &ctx->ibox_fasync); |
| 558 | } |
| 559 | |
| 560 | /* interrupt-level ibox callback function. */ |
| 561 | void spufs_ibox_callback(struct spu *spu) |
| 562 | { |
| 563 | struct spu_context *ctx = spu->ctx; |
| 564 | |
| 565 | wake_up_all(&ctx->ibox_wq); |
| 566 | kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 567 | } |
| 568 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 569 | /* |
| 570 | * Read as many bytes from the interrupt mailbox as possible, until |
| 571 | * one of the conditions becomes true: |
| 572 | * |
| 573 | * - no more data available in the mailbox |
| 574 | * - end of the user provided buffer |
| 575 | * - end of the mapped area |
| 576 | * |
| 577 | * If the file is opened without O_NONBLOCK, we wait here until |
| 578 | * any data is available, but return when we have been able to |
| 579 | * read something. |
| 580 | */ |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 581 | static ssize_t spufs_ibox_read(struct file *file, char __user *buf, |
| 582 | size_t len, loff_t *pos) |
| 583 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 584 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 585 | u32 ibox_data, __user *udata; |
| 586 | ssize_t count; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 587 | |
| 588 | if (len < 4) |
| 589 | return -EINVAL; |
| 590 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 591 | if (!access_ok(VERIFY_WRITE, buf, len)) |
| 592 | return -EFAULT; |
| 593 | |
| 594 | udata = (void __user *)buf; |
| 595 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 596 | spu_acquire(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 597 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 598 | /* wait only for the first element */ |
| 599 | count = 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 600 | if (file->f_flags & O_NONBLOCK) { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 601 | if (!spu_ibox_read(ctx, &ibox_data)) |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 602 | count = -EAGAIN; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 603 | } else { |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 604 | count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); |
| 605 | } |
| 606 | if (count) |
| 607 | goto out; |
| 608 | |
| 609 | /* if we can't write at all, return -EFAULT */ |
| 610 | count = __put_user(ibox_data, udata); |
| 611 | if (count) |
| 612 | goto out; |
| 613 | |
| 614 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
| 615 | int ret; |
| 616 | ret = ctx->ops->ibox_read(ctx, &ibox_data); |
| 617 | if (ret == 0) |
| 618 | break; |
| 619 | /* |
| 620 | * at the end of the mapped area, we can fault |
| 621 | * but still need to return the data we have |
| 622 | * read successfully so far. |
| 623 | */ |
| 624 | ret = __put_user(ibox_data, udata); |
| 625 | if (ret) |
| 626 | break; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 627 | } |
| 628 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 629 | out: |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 630 | spu_release(ctx); |
| 631 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 632 | return count; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) |
| 636 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 637 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 638 | unsigned int mask; |
| 639 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 640 | poll_wait(file, &ctx->ibox_wq, wait); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 641 | |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 642 | spu_acquire(ctx); |
| 643 | mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); |
| 644 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 645 | |
| 646 | return mask; |
| 647 | } |
| 648 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 649 | static const struct file_operations spufs_ibox_fops = { |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 650 | .open = spufs_pipe_open, |
| 651 | .read = spufs_ibox_read, |
| 652 | .poll = spufs_ibox_poll, |
| 653 | .fasync = spufs_ibox_fasync, |
| 654 | }; |
| 655 | |
| 656 | static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, |
| 657 | size_t len, loff_t *pos) |
| 658 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 659 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 660 | u32 ibox_stat; |
| 661 | |
| 662 | if (len < 4) |
| 663 | return -EINVAL; |
| 664 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 665 | spu_acquire(ctx); |
| 666 | ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; |
| 667 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 668 | |
| 669 | if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) |
| 670 | return -EFAULT; |
| 671 | |
| 672 | return 4; |
| 673 | } |
| 674 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 675 | static const struct file_operations spufs_ibox_stat_fops = { |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 676 | .open = spufs_pipe_open, |
| 677 | .read = spufs_ibox_stat_read, |
| 678 | }; |
| 679 | |
| 680 | /* low-level mailbox write */ |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 681 | size_t spu_wbox_write(struct spu_context *ctx, u32 data) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 682 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 683 | return ctx->ops->wbox_write(ctx, data); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 684 | } |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 685 | |
| 686 | static int spufs_wbox_fasync(int fd, struct file *file, int on) |
| 687 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 688 | struct spu_context *ctx = file->private_data; |
| 689 | int ret; |
| 690 | |
| 691 | ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); |
| 692 | |
| 693 | return ret; |
| 694 | } |
| 695 | |
| 696 | /* interrupt-level wbox callback function. */ |
| 697 | void spufs_wbox_callback(struct spu *spu) |
| 698 | { |
| 699 | struct spu_context *ctx = spu->ctx; |
| 700 | |
| 701 | wake_up_all(&ctx->wbox_wq); |
| 702 | kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 703 | } |
| 704 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 705 | /* |
| 706 | * Write as many bytes to the interrupt mailbox as possible, until |
| 707 | * one of the conditions becomes true: |
| 708 | * |
| 709 | * - the mailbox is full |
| 710 | * - end of the user provided buffer |
| 711 | * - end of the mapped area |
| 712 | * |
| 713 | * If the file is opened without O_NONBLOCK, we wait here until |
| 714 | * space is availabyl, but return when we have been able to |
| 715 | * write something. |
| 716 | */ |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 717 | static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, |
| 718 | size_t len, loff_t *pos) |
| 719 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 720 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 721 | u32 wbox_data, __user *udata; |
| 722 | ssize_t count; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 723 | |
| 724 | if (len < 4) |
| 725 | return -EINVAL; |
| 726 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 727 | udata = (void __user *)buf; |
| 728 | if (!access_ok(VERIFY_READ, buf, len)) |
| 729 | return -EFAULT; |
| 730 | |
| 731 | if (__get_user(wbox_data, udata)) |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 732 | return -EFAULT; |
| 733 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 734 | spu_acquire(ctx); |
| 735 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 736 | /* |
| 737 | * make sure we can at least write one element, by waiting |
| 738 | * in case of !O_NONBLOCK |
| 739 | */ |
| 740 | count = 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 741 | if (file->f_flags & O_NONBLOCK) { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 742 | if (!spu_wbox_write(ctx, wbox_data)) |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 743 | count = -EAGAIN; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 744 | } else { |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 745 | count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 746 | } |
| 747 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 748 | if (count) |
| 749 | goto out; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 750 | |
Arnd Bergmann | cdcc89b | 2006-10-04 17:26:17 +0200 | [diff] [blame] | 751 | /* write aѕ much as possible */ |
| 752 | for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { |
| 753 | int ret; |
| 754 | ret = __get_user(wbox_data, udata); |
| 755 | if (ret) |
| 756 | break; |
| 757 | |
| 758 | ret = spu_wbox_write(ctx, wbox_data); |
| 759 | if (ret == 0) |
| 760 | break; |
| 761 | } |
| 762 | |
| 763 | out: |
| 764 | spu_release(ctx); |
| 765 | return count; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) |
| 769 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 770 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 771 | unsigned int mask; |
| 772 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 773 | poll_wait(file, &ctx->wbox_wq, wait); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 774 | |
Arnd Bergmann | 3a843d7 | 2005-12-05 22:52:27 -0500 | [diff] [blame] | 775 | spu_acquire(ctx); |
| 776 | mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); |
| 777 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 778 | |
| 779 | return mask; |
| 780 | } |
| 781 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 782 | static const struct file_operations spufs_wbox_fops = { |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 783 | .open = spufs_pipe_open, |
| 784 | .write = spufs_wbox_write, |
| 785 | .poll = spufs_wbox_poll, |
| 786 | .fasync = spufs_wbox_fasync, |
| 787 | }; |
| 788 | |
| 789 | static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, |
| 790 | size_t len, loff_t *pos) |
| 791 | { |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 792 | struct spu_context *ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 793 | u32 wbox_stat; |
| 794 | |
| 795 | if (len < 4) |
| 796 | return -EINVAL; |
| 797 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 798 | spu_acquire(ctx); |
| 799 | wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; |
| 800 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 801 | |
| 802 | if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) |
| 803 | return -EFAULT; |
| 804 | |
| 805 | return 4; |
| 806 | } |
| 807 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 808 | static const struct file_operations spufs_wbox_stat_fops = { |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 809 | .open = spufs_pipe_open, |
| 810 | .read = spufs_wbox_stat_read, |
| 811 | }; |
| 812 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 813 | static int spufs_signal1_open(struct inode *inode, struct file *file) |
| 814 | { |
| 815 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 816 | struct spu_context *ctx = i->i_ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 817 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 818 | mutex_lock(&ctx->mapping_lock); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 819 | file->private_data = ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 820 | if (!i->i_openers++) |
| 821 | ctx->signal1 = inode->i_mapping; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 822 | mutex_unlock(&ctx->mapping_lock); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 823 | return nonseekable_open(inode, file); |
| 824 | } |
| 825 | |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 826 | static int |
| 827 | spufs_signal1_release(struct inode *inode, struct file *file) |
| 828 | { |
| 829 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 830 | struct spu_context *ctx = i->i_ctx; |
| 831 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 832 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 833 | if (!--i->i_openers) |
| 834 | ctx->signal1 = NULL; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 835 | mutex_unlock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 836 | return 0; |
| 837 | } |
| 838 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 839 | static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 840 | size_t len, loff_t *pos) |
| 841 | { |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 842 | int ret = 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 843 | u32 data; |
| 844 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 845 | if (len < 4) |
| 846 | return -EINVAL; |
| 847 | |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 848 | if (ctx->csa.spu_chnlcnt_RW[3]) { |
| 849 | data = ctx->csa.spu_chnldata_RW[3]; |
| 850 | ret = 4; |
| 851 | } |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 852 | |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 853 | if (!ret) |
| 854 | goto out; |
| 855 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 856 | if (copy_to_user(buf, &data, 4)) |
| 857 | return -EFAULT; |
| 858 | |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 859 | out: |
| 860 | return ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 861 | } |
| 862 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 863 | static ssize_t spufs_signal1_read(struct file *file, char __user *buf, |
| 864 | size_t len, loff_t *pos) |
| 865 | { |
| 866 | int ret; |
| 867 | struct spu_context *ctx = file->private_data; |
| 868 | |
| 869 | spu_acquire_saved(ctx); |
| 870 | ret = __spufs_signal1_read(ctx, buf, len, pos); |
| 871 | spu_release(ctx); |
| 872 | |
| 873 | return ret; |
| 874 | } |
| 875 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 876 | static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, |
| 877 | size_t len, loff_t *pos) |
| 878 | { |
| 879 | struct spu_context *ctx; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 880 | u32 data; |
| 881 | |
| 882 | ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 883 | |
| 884 | if (len < 4) |
| 885 | return -EINVAL; |
| 886 | |
| 887 | if (copy_from_user(&data, buf, 4)) |
| 888 | return -EFAULT; |
| 889 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 890 | spu_acquire(ctx); |
| 891 | ctx->ops->signal1_write(ctx, data); |
| 892 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 893 | |
| 894 | return 4; |
| 895 | } |
| 896 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 897 | static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma, |
| 898 | unsigned long address) |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 899 | { |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 900 | #if PAGE_SIZE == 0x1000 |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 901 | return spufs_ps_nopfn(vma, address, 0x14000, 0x1000); |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 902 | #elif PAGE_SIZE == 0x10000 |
| 903 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
| 904 | * signal 1 and 2 area |
| 905 | */ |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 906 | return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 907 | #else |
| 908 | #error unsupported page size |
| 909 | #endif |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 910 | } |
| 911 | |
| 912 | static struct vm_operations_struct spufs_signal1_mmap_vmops = { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 913 | .nopfn = spufs_signal1_mmap_nopfn, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 914 | }; |
| 915 | |
| 916 | static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) |
| 917 | { |
| 918 | if (!(vma->vm_flags & VM_SHARED)) |
| 919 | return -EINVAL; |
| 920 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 921 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 922 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
Benjamin Herrenschmidt | 23cc770 | 2006-06-23 20:57:47 +0200 | [diff] [blame] | 923 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 924 | |
| 925 | vma->vm_ops = &spufs_signal1_mmap_vmops; |
| 926 | return 0; |
| 927 | } |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 928 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 929 | static const struct file_operations spufs_signal1_fops = { |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 930 | .open = spufs_signal1_open, |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 931 | .release = spufs_signal1_release, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 932 | .read = spufs_signal1_read, |
| 933 | .write = spufs_signal1_write, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 934 | .mmap = spufs_signal1_mmap, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 935 | }; |
| 936 | |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 937 | static int spufs_signal2_open(struct inode *inode, struct file *file) |
| 938 | { |
| 939 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 940 | struct spu_context *ctx = i->i_ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 941 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 942 | mutex_lock(&ctx->mapping_lock); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 943 | file->private_data = ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 944 | if (!i->i_openers++) |
| 945 | ctx->signal2 = inode->i_mapping; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 946 | mutex_unlock(&ctx->mapping_lock); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 947 | return nonseekable_open(inode, file); |
| 948 | } |
| 949 | |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 950 | static int |
| 951 | spufs_signal2_release(struct inode *inode, struct file *file) |
| 952 | { |
| 953 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 954 | struct spu_context *ctx = i->i_ctx; |
| 955 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 956 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 957 | if (!--i->i_openers) |
| 958 | ctx->signal2 = NULL; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 959 | mutex_unlock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 960 | return 0; |
| 961 | } |
| 962 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 963 | static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 964 | size_t len, loff_t *pos) |
| 965 | { |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 966 | int ret = 0; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 967 | u32 data; |
| 968 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 969 | if (len < 4) |
| 970 | return -EINVAL; |
| 971 | |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 972 | if (ctx->csa.spu_chnlcnt_RW[4]) { |
| 973 | data = ctx->csa.spu_chnldata_RW[4]; |
| 974 | ret = 4; |
| 975 | } |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 976 | |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 977 | if (!ret) |
| 978 | goto out; |
| 979 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 980 | if (copy_to_user(buf, &data, 4)) |
| 981 | return -EFAULT; |
| 982 | |
Dwayne Grant McConnell | 17f88ce | 2006-11-20 18:45:01 +0100 | [diff] [blame] | 983 | out: |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 984 | return ret; |
| 985 | } |
| 986 | |
| 987 | static ssize_t spufs_signal2_read(struct file *file, char __user *buf, |
| 988 | size_t len, loff_t *pos) |
| 989 | { |
| 990 | struct spu_context *ctx = file->private_data; |
| 991 | int ret; |
| 992 | |
| 993 | spu_acquire_saved(ctx); |
| 994 | ret = __spufs_signal2_read(ctx, buf, len, pos); |
| 995 | spu_release(ctx); |
| 996 | |
| 997 | return ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 998 | } |
| 999 | |
| 1000 | static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, |
| 1001 | size_t len, loff_t *pos) |
| 1002 | { |
| 1003 | struct spu_context *ctx; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1004 | u32 data; |
| 1005 | |
| 1006 | ctx = file->private_data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1007 | |
| 1008 | if (len < 4) |
| 1009 | return -EINVAL; |
| 1010 | |
| 1011 | if (copy_from_user(&data, buf, 4)) |
| 1012 | return -EFAULT; |
| 1013 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1014 | spu_acquire(ctx); |
| 1015 | ctx->ops->signal2_write(ctx, data); |
| 1016 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1017 | |
| 1018 | return 4; |
| 1019 | } |
| 1020 | |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1021 | #if SPUFS_MMAP_4K |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1022 | static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma, |
| 1023 | unsigned long address) |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1024 | { |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1025 | #if PAGE_SIZE == 0x1000 |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1026 | return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000); |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1027 | #elif PAGE_SIZE == 0x10000 |
| 1028 | /* For 64k pages, both signal1 and signal2 can be used to mmap the whole |
| 1029 | * signal 1 and 2 area |
| 1030 | */ |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1031 | return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1032 | #else |
| 1033 | #error unsupported page size |
| 1034 | #endif |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1035 | } |
| 1036 | |
| 1037 | static struct vm_operations_struct spufs_signal2_mmap_vmops = { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1038 | .nopfn = spufs_signal2_mmap_nopfn, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1039 | }; |
| 1040 | |
| 1041 | static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) |
| 1042 | { |
| 1043 | if (!(vma->vm_flags & VM_SHARED)) |
| 1044 | return -EINVAL; |
| 1045 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1046 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1047 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
Benjamin Herrenschmidt | 23cc770 | 2006-06-23 20:57:47 +0200 | [diff] [blame] | 1048 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1049 | |
| 1050 | vma->vm_ops = &spufs_signal2_mmap_vmops; |
| 1051 | return 0; |
| 1052 | } |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1053 | #else /* SPUFS_MMAP_4K */ |
| 1054 | #define spufs_signal2_mmap NULL |
| 1055 | #endif /* !SPUFS_MMAP_4K */ |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1056 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1057 | static const struct file_operations spufs_signal2_fops = { |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1058 | .open = spufs_signal2_open, |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1059 | .release = spufs_signal2_release, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1060 | .read = spufs_signal2_read, |
| 1061 | .write = spufs_signal2_write, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1062 | .mmap = spufs_signal2_mmap, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1063 | }; |
| 1064 | |
| 1065 | static void spufs_signal1_type_set(void *data, u64 val) |
| 1066 | { |
| 1067 | struct spu_context *ctx = data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1068 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1069 | spu_acquire(ctx); |
| 1070 | ctx->ops->signal1_type_set(ctx, val); |
| 1071 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1072 | } |
| 1073 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1074 | static u64 __spufs_signal1_type_get(void *data) |
| 1075 | { |
| 1076 | struct spu_context *ctx = data; |
| 1077 | return ctx->ops->signal1_type_get(ctx); |
| 1078 | } |
| 1079 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1080 | static u64 spufs_signal1_type_get(void *data) |
| 1081 | { |
| 1082 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1083 | u64 ret; |
| 1084 | |
| 1085 | spu_acquire(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1086 | ret = __spufs_signal1_type_get(data); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1087 | spu_release(ctx); |
| 1088 | |
| 1089 | return ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1090 | } |
| 1091 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, |
| 1092 | spufs_signal1_type_set, "%llu"); |
| 1093 | |
| 1094 | static void spufs_signal2_type_set(void *data, u64 val) |
| 1095 | { |
| 1096 | struct spu_context *ctx = data; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1097 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1098 | spu_acquire(ctx); |
| 1099 | ctx->ops->signal2_type_set(ctx, val); |
| 1100 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1101 | } |
| 1102 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1103 | static u64 __spufs_signal2_type_get(void *data) |
| 1104 | { |
| 1105 | struct spu_context *ctx = data; |
| 1106 | return ctx->ops->signal2_type_get(ctx); |
| 1107 | } |
| 1108 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1109 | static u64 spufs_signal2_type_get(void *data) |
| 1110 | { |
| 1111 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1112 | u64 ret; |
| 1113 | |
| 1114 | spu_acquire(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1115 | ret = __spufs_signal2_type_get(data); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1116 | spu_release(ctx); |
| 1117 | |
| 1118 | return ret; |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1119 | } |
| 1120 | DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, |
| 1121 | spufs_signal2_type_set, "%llu"); |
| 1122 | |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1123 | #if SPUFS_MMAP_4K |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1124 | static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma, |
| 1125 | unsigned long address) |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1126 | { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1127 | return spufs_ps_nopfn(vma, address, 0x0000, 0x1000); |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1128 | } |
| 1129 | |
| 1130 | static struct vm_operations_struct spufs_mss_mmap_vmops = { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1131 | .nopfn = spufs_mss_mmap_nopfn, |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1132 | }; |
| 1133 | |
| 1134 | /* |
| 1135 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1136 | */ |
| 1137 | static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) |
| 1138 | { |
| 1139 | if (!(vma->vm_flags & VM_SHARED)) |
| 1140 | return -EINVAL; |
| 1141 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1142 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1143 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
Benjamin Herrenschmidt | 23cc770 | 2006-06-23 20:57:47 +0200 | [diff] [blame] | 1144 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1145 | |
| 1146 | vma->vm_ops = &spufs_mss_mmap_vmops; |
| 1147 | return 0; |
| 1148 | } |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1149 | #else /* SPUFS_MMAP_4K */ |
| 1150 | #define spufs_mss_mmap NULL |
| 1151 | #endif /* !SPUFS_MMAP_4K */ |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1152 | |
| 1153 | static int spufs_mss_open(struct inode *inode, struct file *file) |
| 1154 | { |
| 1155 | struct spufs_inode_info *i = SPUFS_I(inode); |
Benjamin Herrenschmidt | 17e0e27 | 2007-02-13 11:46:08 +1100 | [diff] [blame] | 1156 | struct spu_context *ctx = i->i_ctx; |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1157 | |
| 1158 | file->private_data = i->i_ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1159 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1160 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1161 | if (!i->i_openers++) |
| 1162 | ctx->mss = inode->i_mapping; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1163 | mutex_unlock(&ctx->mapping_lock); |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1164 | return nonseekable_open(inode, file); |
| 1165 | } |
| 1166 | |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1167 | static int |
| 1168 | spufs_mss_release(struct inode *inode, struct file *file) |
| 1169 | { |
| 1170 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 1171 | struct spu_context *ctx = i->i_ctx; |
| 1172 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1173 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1174 | if (!--i->i_openers) |
| 1175 | ctx->mss = NULL; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1176 | mutex_unlock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1177 | return 0; |
| 1178 | } |
| 1179 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1180 | static const struct file_operations spufs_mss_fops = { |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1181 | .open = spufs_mss_open, |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1182 | .release = spufs_mss_release, |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1183 | .mmap = spufs_mss_mmap, |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1184 | }; |
| 1185 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1186 | static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma, |
| 1187 | unsigned long address) |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1188 | { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1189 | return spufs_ps_nopfn(vma, address, 0x0000, 0x20000); |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | static struct vm_operations_struct spufs_psmap_mmap_vmops = { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1193 | .nopfn = spufs_psmap_mmap_nopfn, |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1194 | }; |
| 1195 | |
| 1196 | /* |
| 1197 | * mmap support for full problem state area [0x00000 - 0x1ffff]. |
| 1198 | */ |
| 1199 | static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) |
| 1200 | { |
| 1201 | if (!(vma->vm_flags & VM_SHARED)) |
| 1202 | return -EINVAL; |
| 1203 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1204 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1205 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
| 1206 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
| 1207 | |
| 1208 | vma->vm_ops = &spufs_psmap_mmap_vmops; |
| 1209 | return 0; |
| 1210 | } |
| 1211 | |
| 1212 | static int spufs_psmap_open(struct inode *inode, struct file *file) |
| 1213 | { |
| 1214 | struct spufs_inode_info *i = SPUFS_I(inode); |
Benjamin Herrenschmidt | 17e0e27 | 2007-02-13 11:46:08 +1100 | [diff] [blame] | 1215 | struct spu_context *ctx = i->i_ctx; |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1216 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1217 | mutex_lock(&ctx->mapping_lock); |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1218 | file->private_data = i->i_ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1219 | if (!i->i_openers++) |
| 1220 | ctx->psmap = inode->i_mapping; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1221 | mutex_unlock(&ctx->mapping_lock); |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1222 | return nonseekable_open(inode, file); |
| 1223 | } |
| 1224 | |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1225 | static int |
| 1226 | spufs_psmap_release(struct inode *inode, struct file *file) |
| 1227 | { |
| 1228 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 1229 | struct spu_context *ctx = i->i_ctx; |
| 1230 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1231 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1232 | if (!--i->i_openers) |
| 1233 | ctx->psmap = NULL; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1234 | mutex_unlock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1235 | return 0; |
| 1236 | } |
| 1237 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1238 | static const struct file_operations spufs_psmap_fops = { |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1239 | .open = spufs_psmap_open, |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1240 | .release = spufs_psmap_release, |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1241 | .mmap = spufs_psmap_mmap, |
arnd@arndb.de | d9379c4 | 2006-06-19 20:33:21 +0200 | [diff] [blame] | 1242 | }; |
| 1243 | |
| 1244 | |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1245 | #if SPUFS_MMAP_4K |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1246 | static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma, |
| 1247 | unsigned long address) |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1248 | { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1249 | return spufs_ps_nopfn(vma, address, 0x3000, 0x1000); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1250 | } |
| 1251 | |
| 1252 | static struct vm_operations_struct spufs_mfc_mmap_vmops = { |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1253 | .nopfn = spufs_mfc_mmap_nopfn, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1254 | }; |
| 1255 | |
| 1256 | /* |
| 1257 | * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1258 | */ |
| 1259 | static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) |
| 1260 | { |
| 1261 | if (!(vma->vm_flags & VM_SHARED)) |
| 1262 | return -EINVAL; |
| 1263 | |
Benjamin Herrenschmidt | 78bde53 | 2007-02-13 11:46:06 +1100 | [diff] [blame] | 1264 | vma->vm_flags |= VM_IO | VM_PFNMAP; |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1265 | vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) |
Benjamin Herrenschmidt | 23cc770 | 2006-06-23 20:57:47 +0200 | [diff] [blame] | 1266 | | _PAGE_NO_CACHE | _PAGE_GUARDED); |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1267 | |
| 1268 | vma->vm_ops = &spufs_mfc_mmap_vmops; |
| 1269 | return 0; |
| 1270 | } |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 1271 | #else /* SPUFS_MMAP_4K */ |
| 1272 | #define spufs_mfc_mmap NULL |
| 1273 | #endif /* !SPUFS_MMAP_4K */ |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1274 | |
| 1275 | static int spufs_mfc_open(struct inode *inode, struct file *file) |
| 1276 | { |
| 1277 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 1278 | struct spu_context *ctx = i->i_ctx; |
| 1279 | |
| 1280 | /* we don't want to deal with DMA into other processes */ |
| 1281 | if (ctx->owner != current->mm) |
| 1282 | return -EINVAL; |
| 1283 | |
| 1284 | if (atomic_read(&inode->i_count) != 1) |
| 1285 | return -EBUSY; |
| 1286 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1287 | mutex_lock(&ctx->mapping_lock); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1288 | file->private_data = ctx; |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1289 | if (!i->i_openers++) |
| 1290 | ctx->mfc = inode->i_mapping; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1291 | mutex_unlock(&ctx->mapping_lock); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1292 | return nonseekable_open(inode, file); |
| 1293 | } |
| 1294 | |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1295 | static int |
| 1296 | spufs_mfc_release(struct inode *inode, struct file *file) |
| 1297 | { |
| 1298 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 1299 | struct spu_context *ctx = i->i_ctx; |
| 1300 | |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1301 | mutex_lock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1302 | if (!--i->i_openers) |
| 1303 | ctx->mfc = NULL; |
Christoph Hellwig | 47d3a5f | 2007-06-04 23:26:51 +1000 | [diff] [blame] | 1304 | mutex_unlock(&ctx->mapping_lock); |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1305 | return 0; |
| 1306 | } |
| 1307 | |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1308 | /* interrupt-level mfc callback function. */ |
| 1309 | void spufs_mfc_callback(struct spu *spu) |
| 1310 | { |
| 1311 | struct spu_context *ctx = spu->ctx; |
| 1312 | |
| 1313 | wake_up_all(&ctx->mfc_wq); |
| 1314 | |
| 1315 | pr_debug("%s %s\n", __FUNCTION__, spu->name); |
| 1316 | if (ctx->mfc_fasync) { |
| 1317 | u32 free_elements, tagstatus; |
| 1318 | unsigned int mask; |
| 1319 | |
| 1320 | /* no need for spu_acquire in interrupt context */ |
| 1321 | free_elements = ctx->ops->get_mfc_free_elements(ctx); |
| 1322 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); |
| 1323 | |
| 1324 | mask = 0; |
| 1325 | if (free_elements & 0xffff) |
| 1326 | mask |= POLLOUT; |
| 1327 | if (tagstatus & ctx->tagwait) |
| 1328 | mask |= POLLIN; |
| 1329 | |
| 1330 | kill_fasync(&ctx->mfc_fasync, SIGIO, mask); |
| 1331 | } |
| 1332 | } |
| 1333 | |
| 1334 | static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) |
| 1335 | { |
| 1336 | /* See if there is one tag group is complete */ |
| 1337 | /* FIXME we need locking around tagwait */ |
| 1338 | *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; |
| 1339 | ctx->tagwait &= ~*status; |
| 1340 | if (*status) |
| 1341 | return 1; |
| 1342 | |
| 1343 | /* enable interrupt waiting for any tag group, |
| 1344 | may silently fail if interrupts are already enabled */ |
| 1345 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); |
| 1346 | return 0; |
| 1347 | } |
| 1348 | |
| 1349 | static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, |
| 1350 | size_t size, loff_t *pos) |
| 1351 | { |
| 1352 | struct spu_context *ctx = file->private_data; |
| 1353 | int ret = -EINVAL; |
| 1354 | u32 status; |
| 1355 | |
| 1356 | if (size != 4) |
| 1357 | goto out; |
| 1358 | |
| 1359 | spu_acquire(ctx); |
| 1360 | if (file->f_flags & O_NONBLOCK) { |
| 1361 | status = ctx->ops->read_mfc_tagstatus(ctx); |
| 1362 | if (!(status & ctx->tagwait)) |
| 1363 | ret = -EAGAIN; |
| 1364 | else |
| 1365 | ctx->tagwait &= ~status; |
| 1366 | } else { |
| 1367 | ret = spufs_wait(ctx->mfc_wq, |
| 1368 | spufs_read_mfc_tagstatus(ctx, &status)); |
| 1369 | } |
| 1370 | spu_release(ctx); |
| 1371 | |
| 1372 | if (ret) |
| 1373 | goto out; |
| 1374 | |
| 1375 | ret = 4; |
| 1376 | if (copy_to_user(buffer, &status, 4)) |
| 1377 | ret = -EFAULT; |
| 1378 | |
| 1379 | out: |
| 1380 | return ret; |
| 1381 | } |
| 1382 | |
| 1383 | static int spufs_check_valid_dma(struct mfc_dma_command *cmd) |
| 1384 | { |
| 1385 | pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, |
| 1386 | cmd->ea, cmd->size, cmd->tag, cmd->cmd); |
| 1387 | |
| 1388 | switch (cmd->cmd) { |
| 1389 | case MFC_PUT_CMD: |
| 1390 | case MFC_PUTF_CMD: |
| 1391 | case MFC_PUTB_CMD: |
| 1392 | case MFC_GET_CMD: |
| 1393 | case MFC_GETF_CMD: |
| 1394 | case MFC_GETB_CMD: |
| 1395 | break; |
| 1396 | default: |
| 1397 | pr_debug("invalid DMA opcode %x\n", cmd->cmd); |
| 1398 | return -EIO; |
| 1399 | } |
| 1400 | |
| 1401 | if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { |
| 1402 | pr_debug("invalid DMA alignment, ea %lx lsa %x\n", |
| 1403 | cmd->ea, cmd->lsa); |
| 1404 | return -EIO; |
| 1405 | } |
| 1406 | |
| 1407 | switch (cmd->size & 0xf) { |
| 1408 | case 1: |
| 1409 | break; |
| 1410 | case 2: |
| 1411 | if (cmd->lsa & 1) |
| 1412 | goto error; |
| 1413 | break; |
| 1414 | case 4: |
| 1415 | if (cmd->lsa & 3) |
| 1416 | goto error; |
| 1417 | break; |
| 1418 | case 8: |
| 1419 | if (cmd->lsa & 7) |
| 1420 | goto error; |
| 1421 | break; |
| 1422 | case 0: |
| 1423 | if (cmd->lsa & 15) |
| 1424 | goto error; |
| 1425 | break; |
| 1426 | error: |
| 1427 | default: |
| 1428 | pr_debug("invalid DMA alignment %x for size %x\n", |
| 1429 | cmd->lsa & 0xf, cmd->size); |
| 1430 | return -EIO; |
| 1431 | } |
| 1432 | |
| 1433 | if (cmd->size > 16 * 1024) { |
| 1434 | pr_debug("invalid DMA size %x\n", cmd->size); |
| 1435 | return -EIO; |
| 1436 | } |
| 1437 | |
| 1438 | if (cmd->tag & 0xfff0) { |
| 1439 | /* we reserve the higher tag numbers for kernel use */ |
| 1440 | pr_debug("invalid DMA tag\n"); |
| 1441 | return -EIO; |
| 1442 | } |
| 1443 | |
| 1444 | if (cmd->class) { |
| 1445 | /* not supported in this version */ |
| 1446 | pr_debug("invalid DMA class\n"); |
| 1447 | return -EIO; |
| 1448 | } |
| 1449 | |
| 1450 | return 0; |
| 1451 | } |
| 1452 | |
| 1453 | static int spu_send_mfc_command(struct spu_context *ctx, |
| 1454 | struct mfc_dma_command cmd, |
| 1455 | int *error) |
| 1456 | { |
| 1457 | *error = ctx->ops->send_mfc_command(ctx, &cmd); |
| 1458 | if (*error == -EAGAIN) { |
| 1459 | /* wait for any tag group to complete |
| 1460 | so we have space for the new command */ |
| 1461 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); |
| 1462 | /* try again, because the queue might be |
| 1463 | empty again */ |
| 1464 | *error = ctx->ops->send_mfc_command(ctx, &cmd); |
| 1465 | if (*error == -EAGAIN) |
| 1466 | return 0; |
| 1467 | } |
| 1468 | return 1; |
| 1469 | } |
| 1470 | |
| 1471 | static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, |
| 1472 | size_t size, loff_t *pos) |
| 1473 | { |
| 1474 | struct spu_context *ctx = file->private_data; |
| 1475 | struct mfc_dma_command cmd; |
| 1476 | int ret = -EINVAL; |
| 1477 | |
| 1478 | if (size != sizeof cmd) |
| 1479 | goto out; |
| 1480 | |
| 1481 | ret = -EFAULT; |
| 1482 | if (copy_from_user(&cmd, buffer, sizeof cmd)) |
| 1483 | goto out; |
| 1484 | |
| 1485 | ret = spufs_check_valid_dma(&cmd); |
| 1486 | if (ret) |
| 1487 | goto out; |
| 1488 | |
Akinobu Mita | 577f8f1 | 2007-04-23 21:08:18 +0200 | [diff] [blame] | 1489 | ret = spu_acquire_runnable(ctx, 0); |
| 1490 | if (ret) |
| 1491 | goto out; |
| 1492 | |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1493 | if (file->f_flags & O_NONBLOCK) { |
| 1494 | ret = ctx->ops->send_mfc_command(ctx, &cmd); |
| 1495 | } else { |
| 1496 | int status; |
| 1497 | ret = spufs_wait(ctx->mfc_wq, |
| 1498 | spu_send_mfc_command(ctx, cmd, &status)); |
| 1499 | if (status) |
| 1500 | ret = status; |
| 1501 | } |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1502 | |
| 1503 | if (ret) |
Kazunori Asayama | 933b0e3 | 2007-06-29 10:58:08 +1000 | [diff] [blame^] | 1504 | goto out_unlock; |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1505 | |
| 1506 | ctx->tagwait |= 1 << cmd.tag; |
Masato Noguchi | 3692dc6 | 2006-11-20 18:45:07 +0100 | [diff] [blame] | 1507 | ret = size; |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1508 | |
Kazunori Asayama | 933b0e3 | 2007-06-29 10:58:08 +1000 | [diff] [blame^] | 1509 | out_unlock: |
| 1510 | spu_release(ctx); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1511 | out: |
| 1512 | return ret; |
| 1513 | } |
| 1514 | |
| 1515 | static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) |
| 1516 | { |
| 1517 | struct spu_context *ctx = file->private_data; |
| 1518 | u32 free_elements, tagstatus; |
| 1519 | unsigned int mask; |
| 1520 | |
Kazunori Asayama | 933b0e3 | 2007-06-29 10:58:08 +1000 | [diff] [blame^] | 1521 | poll_wait(file, &ctx->mfc_wq, wait); |
| 1522 | |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1523 | spu_acquire(ctx); |
| 1524 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); |
| 1525 | free_elements = ctx->ops->get_mfc_free_elements(ctx); |
| 1526 | tagstatus = ctx->ops->read_mfc_tagstatus(ctx); |
| 1527 | spu_release(ctx); |
| 1528 | |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1529 | mask = 0; |
| 1530 | if (free_elements & 0xffff) |
| 1531 | mask |= POLLOUT | POLLWRNORM; |
| 1532 | if (tagstatus & ctx->tagwait) |
| 1533 | mask |= POLLIN | POLLRDNORM; |
| 1534 | |
| 1535 | pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, |
| 1536 | free_elements, tagstatus, ctx->tagwait); |
| 1537 | |
| 1538 | return mask; |
| 1539 | } |
| 1540 | |
Al Viro | 73b6af8 | 2006-06-25 16:42:33 -0700 | [diff] [blame] | 1541 | static int spufs_mfc_flush(struct file *file, fl_owner_t id) |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1542 | { |
| 1543 | struct spu_context *ctx = file->private_data; |
| 1544 | int ret; |
| 1545 | |
| 1546 | spu_acquire(ctx); |
| 1547 | #if 0 |
| 1548 | /* this currently hangs */ |
| 1549 | ret = spufs_wait(ctx->mfc_wq, |
| 1550 | ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); |
| 1551 | if (ret) |
| 1552 | goto out; |
| 1553 | ret = spufs_wait(ctx->mfc_wq, |
| 1554 | ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); |
| 1555 | out: |
| 1556 | #else |
| 1557 | ret = 0; |
| 1558 | #endif |
| 1559 | spu_release(ctx); |
| 1560 | |
| 1561 | return ret; |
| 1562 | } |
| 1563 | |
| 1564 | static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, |
| 1565 | int datasync) |
| 1566 | { |
Al Viro | 73b6af8 | 2006-06-25 16:42:33 -0700 | [diff] [blame] | 1567 | return spufs_mfc_flush(file, NULL); |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1568 | } |
| 1569 | |
| 1570 | static int spufs_mfc_fasync(int fd, struct file *file, int on) |
| 1571 | { |
| 1572 | struct spu_context *ctx = file->private_data; |
| 1573 | |
| 1574 | return fasync_helper(fd, file, on, &ctx->mfc_fasync); |
| 1575 | } |
| 1576 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1577 | static const struct file_operations spufs_mfc_fops = { |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1578 | .open = spufs_mfc_open, |
Christoph Hellwig | 43c2bbd | 2007-04-23 21:08:07 +0200 | [diff] [blame] | 1579 | .release = spufs_mfc_release, |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1580 | .read = spufs_mfc_read, |
| 1581 | .write = spufs_mfc_write, |
| 1582 | .poll = spufs_mfc_poll, |
| 1583 | .flush = spufs_mfc_flush, |
| 1584 | .fsync = spufs_mfc_fsync, |
| 1585 | .fasync = spufs_mfc_fasync, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 1586 | .mmap = spufs_mfc_mmap, |
Arnd Bergmann | a33a7d7 | 2006-03-23 00:00:11 +0100 | [diff] [blame] | 1587 | }; |
| 1588 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1589 | static void spufs_npc_set(void *data, u64 val) |
| 1590 | { |
| 1591 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1592 | spu_acquire(ctx); |
| 1593 | ctx->ops->npc_write(ctx, val); |
| 1594 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1595 | } |
| 1596 | |
| 1597 | static u64 spufs_npc_get(void *data) |
| 1598 | { |
| 1599 | struct spu_context *ctx = data; |
| 1600 | u64 ret; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1601 | spu_acquire(ctx); |
| 1602 | ret = ctx->ops->npc_read(ctx); |
| 1603 | spu_release(ctx); |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1604 | return ret; |
| 1605 | } |
Dwayne Grant McConnell | 9b5047e | 2006-11-20 18:44:57 +0100 | [diff] [blame] | 1606 | DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, |
| 1607 | "0x%llx\n") |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 1608 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1609 | static void spufs_decr_set(void *data, u64 val) |
| 1610 | { |
| 1611 | struct spu_context *ctx = data; |
| 1612 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1613 | spu_acquire_saved(ctx); |
| 1614 | lscsa->decr.slot[0] = (u32) val; |
| 1615 | spu_release(ctx); |
| 1616 | } |
| 1617 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1618 | static u64 __spufs_decr_get(void *data) |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1619 | { |
| 1620 | struct spu_context *ctx = data; |
| 1621 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1622 | return lscsa->decr.slot[0]; |
| 1623 | } |
| 1624 | |
| 1625 | static u64 spufs_decr_get(void *data) |
| 1626 | { |
| 1627 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1628 | u64 ret; |
| 1629 | spu_acquire_saved(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1630 | ret = __spufs_decr_get(data); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1631 | spu_release(ctx); |
| 1632 | return ret; |
| 1633 | } |
| 1634 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, |
Dwayne Grant McConnell | 9b5047e | 2006-11-20 18:44:57 +0100 | [diff] [blame] | 1635 | "0x%llx\n") |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1636 | |
| 1637 | static void spufs_decr_status_set(void *data, u64 val) |
| 1638 | { |
| 1639 | struct spu_context *ctx = data; |
| 1640 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1641 | spu_acquire_saved(ctx); |
| 1642 | lscsa->decr_status.slot[0] = (u32) val; |
| 1643 | spu_release(ctx); |
| 1644 | } |
| 1645 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1646 | static u64 __spufs_decr_status_get(void *data) |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1647 | { |
| 1648 | struct spu_context *ctx = data; |
| 1649 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1650 | return lscsa->decr_status.slot[0]; |
| 1651 | } |
| 1652 | |
| 1653 | static u64 spufs_decr_status_get(void *data) |
| 1654 | { |
| 1655 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1656 | u64 ret; |
| 1657 | spu_acquire_saved(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1658 | ret = __spufs_decr_status_get(data); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1659 | spu_release(ctx); |
| 1660 | return ret; |
| 1661 | } |
| 1662 | DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, |
Dwayne Grant McConnell | 9b5047e | 2006-11-20 18:44:57 +0100 | [diff] [blame] | 1663 | spufs_decr_status_set, "0x%llx\n") |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1664 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1665 | static void spufs_event_mask_set(void *data, u64 val) |
| 1666 | { |
| 1667 | struct spu_context *ctx = data; |
| 1668 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1669 | spu_acquire_saved(ctx); |
| 1670 | lscsa->event_mask.slot[0] = (u32) val; |
| 1671 | spu_release(ctx); |
| 1672 | } |
| 1673 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1674 | static u64 __spufs_event_mask_get(void *data) |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1675 | { |
| 1676 | struct spu_context *ctx = data; |
| 1677 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1678 | return lscsa->event_mask.slot[0]; |
| 1679 | } |
| 1680 | |
| 1681 | static u64 spufs_event_mask_get(void *data) |
| 1682 | { |
| 1683 | struct spu_context *ctx = data; |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1684 | u64 ret; |
| 1685 | spu_acquire_saved(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1686 | ret = __spufs_event_mask_get(data); |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1687 | spu_release(ctx); |
| 1688 | return ret; |
| 1689 | } |
| 1690 | DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, |
Dwayne Grant McConnell | 9b5047e | 2006-11-20 18:44:57 +0100 | [diff] [blame] | 1691 | spufs_event_mask_set, "0x%llx\n") |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1692 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1693 | static u64 __spufs_event_status_get(void *data) |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1694 | { |
| 1695 | struct spu_context *ctx = data; |
| 1696 | struct spu_state *state = &ctx->csa; |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1697 | u64 stat; |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1698 | stat = state->spu_chnlcnt_RW[0]; |
| 1699 | if (stat) |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1700 | return state->spu_chnldata_RW[0]; |
| 1701 | return 0; |
| 1702 | } |
| 1703 | |
| 1704 | static u64 spufs_event_status_get(void *data) |
| 1705 | { |
| 1706 | struct spu_context *ctx = data; |
| 1707 | u64 ret = 0; |
| 1708 | |
| 1709 | spu_acquire_saved(ctx); |
| 1710 | ret = __spufs_event_status_get(data); |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1711 | spu_release(ctx); |
| 1712 | return ret; |
| 1713 | } |
| 1714 | DEFINE_SIMPLE_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, |
| 1715 | NULL, "0x%llx\n") |
| 1716 | |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1717 | static void spufs_srr0_set(void *data, u64 val) |
| 1718 | { |
| 1719 | struct spu_context *ctx = data; |
| 1720 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1721 | spu_acquire_saved(ctx); |
| 1722 | lscsa->srr0.slot[0] = (u32) val; |
| 1723 | spu_release(ctx); |
| 1724 | } |
| 1725 | |
| 1726 | static u64 spufs_srr0_get(void *data) |
| 1727 | { |
| 1728 | struct spu_context *ctx = data; |
| 1729 | struct spu_lscsa *lscsa = ctx->csa.lscsa; |
| 1730 | u64 ret; |
| 1731 | spu_acquire_saved(ctx); |
| 1732 | ret = lscsa->srr0.slot[0]; |
| 1733 | spu_release(ctx); |
| 1734 | return ret; |
| 1735 | } |
| 1736 | DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, |
Dwayne Grant McConnell | 9b5047e | 2006-11-20 18:44:57 +0100 | [diff] [blame] | 1737 | "0x%llx\n") |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 1738 | |
arnd@arndb.de | 7b1a701 | 2006-06-19 20:33:24 +0200 | [diff] [blame] | 1739 | static u64 spufs_id_get(void *data) |
| 1740 | { |
| 1741 | struct spu_context *ctx = data; |
| 1742 | u64 num; |
| 1743 | |
| 1744 | spu_acquire(ctx); |
| 1745 | if (ctx->state == SPU_STATE_RUNNABLE) |
| 1746 | num = ctx->spu->number; |
| 1747 | else |
| 1748 | num = (unsigned int)-1; |
| 1749 | spu_release(ctx); |
| 1750 | |
| 1751 | return num; |
| 1752 | } |
Al Viro | e45d663 | 2006-09-23 01:37:41 +0100 | [diff] [blame] | 1753 | DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n") |
arnd@arndb.de | 7b1a701 | 2006-06-19 20:33:24 +0200 | [diff] [blame] | 1754 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1755 | static u64 __spufs_object_id_get(void *data) |
Arnd Bergmann | 8676727 | 2006-10-04 17:26:21 +0200 | [diff] [blame] | 1756 | { |
| 1757 | struct spu_context *ctx = data; |
| 1758 | return ctx->object_id; |
| 1759 | } |
| 1760 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1761 | static u64 spufs_object_id_get(void *data) |
| 1762 | { |
| 1763 | /* FIXME: Should there really be no locking here? */ |
| 1764 | return __spufs_object_id_get(data); |
| 1765 | } |
| 1766 | |
Arnd Bergmann | 8676727 | 2006-10-04 17:26:21 +0200 | [diff] [blame] | 1767 | static void spufs_object_id_set(void *data, u64 id) |
| 1768 | { |
| 1769 | struct spu_context *ctx = data; |
| 1770 | ctx->object_id = id; |
| 1771 | } |
| 1772 | |
| 1773 | DEFINE_SIMPLE_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, |
| 1774 | spufs_object_id_set, "0x%llx\n"); |
| 1775 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1776 | static u64 __spufs_lslr_get(void *data) |
| 1777 | { |
| 1778 | struct spu_context *ctx = data; |
| 1779 | return ctx->csa.priv2.spu_lslr_RW; |
| 1780 | } |
| 1781 | |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1782 | static u64 spufs_lslr_get(void *data) |
| 1783 | { |
| 1784 | struct spu_context *ctx = data; |
| 1785 | u64 ret; |
| 1786 | |
| 1787 | spu_acquire_saved(ctx); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1788 | ret = __spufs_lslr_get(data); |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1789 | spu_release(ctx); |
| 1790 | |
| 1791 | return ret; |
| 1792 | } |
| 1793 | DEFINE_SIMPLE_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n") |
| 1794 | |
| 1795 | static int spufs_info_open(struct inode *inode, struct file *file) |
| 1796 | { |
| 1797 | struct spufs_inode_info *i = SPUFS_I(inode); |
| 1798 | struct spu_context *ctx = i->i_ctx; |
| 1799 | file->private_data = ctx; |
| 1800 | return 0; |
| 1801 | } |
| 1802 | |
Benjamin Herrenschmidt | cbe709c | 2007-06-04 15:15:38 +1000 | [diff] [blame] | 1803 | static int spufs_caps_show(struct seq_file *s, void *private) |
| 1804 | { |
| 1805 | struct spu_context *ctx = s->private; |
| 1806 | |
| 1807 | if (!(ctx->flags & SPU_CREATE_NOSCHED)) |
| 1808 | seq_puts(s, "sched\n"); |
| 1809 | if (!(ctx->flags & SPU_CREATE_ISOLATE)) |
| 1810 | seq_puts(s, "step\n"); |
| 1811 | return 0; |
| 1812 | } |
| 1813 | |
| 1814 | static int spufs_caps_open(struct inode *inode, struct file *file) |
| 1815 | { |
| 1816 | return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); |
| 1817 | } |
| 1818 | |
| 1819 | static const struct file_operations spufs_caps_fops = { |
| 1820 | .open = spufs_caps_open, |
| 1821 | .read = seq_read, |
| 1822 | .llseek = seq_lseek, |
| 1823 | .release = single_release, |
| 1824 | }; |
| 1825 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1826 | static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, |
| 1827 | char __user *buf, size_t len, loff_t *pos) |
| 1828 | { |
| 1829 | u32 mbox_stat; |
| 1830 | u32 data; |
| 1831 | |
| 1832 | mbox_stat = ctx->csa.prob.mb_stat_R; |
| 1833 | if (mbox_stat & 0x0000ff) { |
| 1834 | data = ctx->csa.prob.pu_mb_R; |
| 1835 | } |
| 1836 | |
| 1837 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); |
| 1838 | } |
| 1839 | |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1840 | static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, |
| 1841 | size_t len, loff_t *pos) |
| 1842 | { |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1843 | int ret; |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1844 | struct spu_context *ctx = file->private_data; |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1845 | |
| 1846 | if (!access_ok(VERIFY_WRITE, buf, len)) |
| 1847 | return -EFAULT; |
| 1848 | |
| 1849 | spu_acquire_saved(ctx); |
| 1850 | spin_lock(&ctx->csa.register_lock); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1851 | ret = __spufs_mbox_info_read(ctx, buf, len, pos); |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1852 | spin_unlock(&ctx->csa.register_lock); |
| 1853 | spu_release(ctx); |
| 1854 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1855 | return ret; |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1856 | } |
| 1857 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1858 | static const struct file_operations spufs_mbox_info_fops = { |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1859 | .open = spufs_info_open, |
| 1860 | .read = spufs_mbox_info_read, |
| 1861 | .llseek = generic_file_llseek, |
| 1862 | }; |
| 1863 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1864 | static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, |
| 1865 | char __user *buf, size_t len, loff_t *pos) |
| 1866 | { |
| 1867 | u32 ibox_stat; |
| 1868 | u32 data; |
| 1869 | |
| 1870 | ibox_stat = ctx->csa.prob.mb_stat_R; |
| 1871 | if (ibox_stat & 0xff0000) { |
| 1872 | data = ctx->csa.priv2.puint_mb_R; |
| 1873 | } |
| 1874 | |
| 1875 | return simple_read_from_buffer(buf, len, pos, &data, sizeof data); |
| 1876 | } |
| 1877 | |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1878 | static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, |
| 1879 | size_t len, loff_t *pos) |
| 1880 | { |
| 1881 | struct spu_context *ctx = file->private_data; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1882 | int ret; |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1883 | |
| 1884 | if (!access_ok(VERIFY_WRITE, buf, len)) |
| 1885 | return -EFAULT; |
| 1886 | |
| 1887 | spu_acquire_saved(ctx); |
| 1888 | spin_lock(&ctx->csa.register_lock); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1889 | ret = __spufs_ibox_info_read(ctx, buf, len, pos); |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1890 | spin_unlock(&ctx->csa.register_lock); |
| 1891 | spu_release(ctx); |
| 1892 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1893 | return ret; |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1894 | } |
| 1895 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1896 | static const struct file_operations spufs_ibox_info_fops = { |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1897 | .open = spufs_info_open, |
| 1898 | .read = spufs_ibox_info_read, |
| 1899 | .llseek = generic_file_llseek, |
| 1900 | }; |
| 1901 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1902 | static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, |
| 1903 | char __user *buf, size_t len, loff_t *pos) |
| 1904 | { |
| 1905 | int i, cnt; |
| 1906 | u32 data[4]; |
| 1907 | u32 wbox_stat; |
| 1908 | |
| 1909 | wbox_stat = ctx->csa.prob.mb_stat_R; |
| 1910 | cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); |
| 1911 | for (i = 0; i < cnt; i++) { |
| 1912 | data[i] = ctx->csa.spu_mailbox_data[i]; |
| 1913 | } |
| 1914 | |
| 1915 | return simple_read_from_buffer(buf, len, pos, &data, |
| 1916 | cnt * sizeof(u32)); |
| 1917 | } |
| 1918 | |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1919 | static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, |
| 1920 | size_t len, loff_t *pos) |
| 1921 | { |
| 1922 | struct spu_context *ctx = file->private_data; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1923 | int ret; |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1924 | |
| 1925 | if (!access_ok(VERIFY_WRITE, buf, len)) |
| 1926 | return -EFAULT; |
| 1927 | |
| 1928 | spu_acquire_saved(ctx); |
| 1929 | spin_lock(&ctx->csa.register_lock); |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1930 | ret = __spufs_wbox_info_read(ctx, buf, len, pos); |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1931 | spin_unlock(&ctx->csa.register_lock); |
| 1932 | spu_release(ctx); |
| 1933 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1934 | return ret; |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1935 | } |
| 1936 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1937 | static const struct file_operations spufs_wbox_info_fops = { |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 1938 | .open = spufs_info_open, |
| 1939 | .read = spufs_wbox_info_read, |
| 1940 | .llseek = generic_file_llseek, |
| 1941 | }; |
| 1942 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1943 | static ssize_t __spufs_dma_info_read(struct spu_context *ctx, |
| 1944 | char __user *buf, size_t len, loff_t *pos) |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1945 | { |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1946 | struct spu_dma_info info; |
| 1947 | struct mfc_cq_sr *qp, *spuqp; |
| 1948 | int i; |
| 1949 | |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1950 | info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; |
| 1951 | info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; |
| 1952 | info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; |
| 1953 | info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; |
| 1954 | info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; |
| 1955 | for (i = 0; i < 16; i++) { |
| 1956 | qp = &info.dma_info_command_data[i]; |
| 1957 | spuqp = &ctx->csa.priv2.spuq[i]; |
| 1958 | |
| 1959 | qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; |
| 1960 | qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; |
| 1961 | qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; |
| 1962 | qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; |
| 1963 | } |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1964 | |
| 1965 | return simple_read_from_buffer(buf, len, pos, &info, |
| 1966 | sizeof info); |
| 1967 | } |
| 1968 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1969 | static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, |
| 1970 | size_t len, loff_t *pos) |
| 1971 | { |
| 1972 | struct spu_context *ctx = file->private_data; |
| 1973 | int ret; |
| 1974 | |
| 1975 | if (!access_ok(VERIFY_WRITE, buf, len)) |
| 1976 | return -EFAULT; |
| 1977 | |
| 1978 | spu_acquire_saved(ctx); |
| 1979 | spin_lock(&ctx->csa.register_lock); |
| 1980 | ret = __spufs_dma_info_read(ctx, buf, len, pos); |
| 1981 | spin_unlock(&ctx->csa.register_lock); |
| 1982 | spu_release(ctx); |
| 1983 | |
| 1984 | return ret; |
| 1985 | } |
| 1986 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 1987 | static const struct file_operations spufs_dma_info_fops = { |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1988 | .open = spufs_info_open, |
| 1989 | .read = spufs_dma_info_read, |
| 1990 | }; |
| 1991 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1992 | static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, |
| 1993 | char __user *buf, size_t len, loff_t *pos) |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1994 | { |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1995 | struct spu_proxydma_info info; |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1996 | struct mfc_cq_sr *qp, *puqp; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 1997 | int ret = sizeof info; |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 1998 | int i; |
| 1999 | |
| 2000 | if (len < ret) |
| 2001 | return -EINVAL; |
| 2002 | |
| 2003 | if (!access_ok(VERIFY_WRITE, buf, len)) |
| 2004 | return -EFAULT; |
| 2005 | |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 2006 | info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; |
| 2007 | info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; |
| 2008 | info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; |
| 2009 | for (i = 0; i < 8; i++) { |
| 2010 | qp = &info.proxydma_info_command_data[i]; |
| 2011 | puqp = &ctx->csa.priv2.puq[i]; |
| 2012 | |
| 2013 | qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; |
| 2014 | qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; |
| 2015 | qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; |
| 2016 | qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; |
| 2017 | } |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 2018 | |
| 2019 | return simple_read_from_buffer(buf, len, pos, &info, |
| 2020 | sizeof info); |
| 2021 | } |
| 2022 | |
| 2023 | static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, |
| 2024 | size_t len, loff_t *pos) |
| 2025 | { |
| 2026 | struct spu_context *ctx = file->private_data; |
| 2027 | int ret; |
| 2028 | |
| 2029 | spu_acquire_saved(ctx); |
| 2030 | spin_lock(&ctx->csa.register_lock); |
| 2031 | ret = __spufs_proxydma_info_read(ctx, buf, len, pos); |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 2032 | spin_unlock(&ctx->csa.register_lock); |
| 2033 | spu_release(ctx); |
| 2034 | |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 2035 | return ret; |
| 2036 | } |
| 2037 | |
Arjan van de Ven | 5dfe4c9 | 2007-02-12 00:55:31 -0800 | [diff] [blame] | 2038 | static const struct file_operations spufs_proxydma_info_fops = { |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 2039 | .open = spufs_info_open, |
| 2040 | .read = spufs_proxydma_info_read, |
| 2041 | }; |
| 2042 | |
Christoph Hellwig | 476273a | 2007-06-29 10:58:01 +1000 | [diff] [blame] | 2043 | static int spufs_show_tid(struct seq_file *s, void *private) |
| 2044 | { |
| 2045 | struct spu_context *ctx = s->private; |
| 2046 | |
| 2047 | seq_printf(s, "%d\n", ctx->tid); |
| 2048 | return 0; |
| 2049 | } |
| 2050 | |
| 2051 | static int spufs_tid_open(struct inode *inode, struct file *file) |
| 2052 | { |
| 2053 | return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); |
| 2054 | } |
| 2055 | |
| 2056 | static const struct file_operations spufs_tid_fops = { |
| 2057 | .open = spufs_tid_open, |
| 2058 | .read = seq_read, |
| 2059 | .llseek = seq_lseek, |
| 2060 | .release = single_release, |
| 2061 | }; |
| 2062 | |
Christoph Hellwig | e9f8a0b | 2007-06-29 10:58:03 +1000 | [diff] [blame] | 2063 | static const char *ctx_state_names[] = { |
| 2064 | "user", "system", "iowait", "loaded" |
| 2065 | }; |
| 2066 | |
| 2067 | static unsigned long long spufs_acct_time(struct spu_context *ctx, |
| 2068 | enum spuctx_execution_state state) |
| 2069 | { |
| 2070 | unsigned long time = ctx->stats.times[state]; |
| 2071 | |
| 2072 | if (ctx->stats.execution_state == state) |
| 2073 | time += jiffies - ctx->stats.tstamp; |
| 2074 | |
| 2075 | return jiffies_to_msecs(time); |
| 2076 | } |
| 2077 | |
| 2078 | static unsigned long long spufs_slb_flts(struct spu_context *ctx) |
| 2079 | { |
| 2080 | unsigned long long slb_flts = ctx->stats.slb_flt; |
| 2081 | |
| 2082 | if (ctx->state == SPU_STATE_RUNNABLE) { |
| 2083 | slb_flts += (ctx->spu->stats.slb_flt - |
| 2084 | ctx->stats.slb_flt_base); |
| 2085 | } |
| 2086 | |
| 2087 | return slb_flts; |
| 2088 | } |
| 2089 | |
| 2090 | static unsigned long long spufs_class2_intrs(struct spu_context *ctx) |
| 2091 | { |
| 2092 | unsigned long long class2_intrs = ctx->stats.class2_intr; |
| 2093 | |
| 2094 | if (ctx->state == SPU_STATE_RUNNABLE) { |
| 2095 | class2_intrs += (ctx->spu->stats.class2_intr - |
| 2096 | ctx->stats.class2_intr_base); |
| 2097 | } |
| 2098 | |
| 2099 | return class2_intrs; |
| 2100 | } |
| 2101 | |
| 2102 | |
| 2103 | static int spufs_show_stat(struct seq_file *s, void *private) |
| 2104 | { |
| 2105 | struct spu_context *ctx = s->private; |
| 2106 | |
| 2107 | spu_acquire(ctx); |
| 2108 | seq_printf(s, "%s %llu %llu %llu %llu " |
| 2109 | "%llu %llu %llu %llu %llu %llu %llu %llu\n", |
| 2110 | ctx_state_names[ctx->stats.execution_state], |
| 2111 | spufs_acct_time(ctx, SPUCTX_UTIL_USER), |
| 2112 | spufs_acct_time(ctx, SPUCTX_UTIL_SYSTEM), |
| 2113 | spufs_acct_time(ctx, SPUCTX_UTIL_IOWAIT), |
| 2114 | spufs_acct_time(ctx, SPUCTX_UTIL_LOADED), |
| 2115 | ctx->stats.vol_ctx_switch, |
| 2116 | ctx->stats.invol_ctx_switch, |
| 2117 | spufs_slb_flts(ctx), |
| 2118 | ctx->stats.hash_flt, |
| 2119 | ctx->stats.min_flt, |
| 2120 | ctx->stats.maj_flt, |
| 2121 | spufs_class2_intrs(ctx), |
| 2122 | ctx->stats.libassist); |
| 2123 | spu_release(ctx); |
| 2124 | return 0; |
| 2125 | } |
| 2126 | |
| 2127 | static int spufs_stat_open(struct inode *inode, struct file *file) |
| 2128 | { |
| 2129 | return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); |
| 2130 | } |
| 2131 | |
| 2132 | static const struct file_operations spufs_stat_fops = { |
| 2133 | .open = spufs_stat_open, |
| 2134 | .read = seq_read, |
| 2135 | .llseek = seq_lseek, |
| 2136 | .release = single_release, |
| 2137 | }; |
| 2138 | |
| 2139 | |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 2140 | struct tree_descr spufs_dir_contents[] = { |
Benjamin Herrenschmidt | cbe709c | 2007-06-04 15:15:38 +1000 | [diff] [blame] | 2141 | { "capabilities", &spufs_caps_fops, 0444, }, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 2142 | { "mem", &spufs_mem_fops, 0666, }, |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 2143 | { "regs", &spufs_regs_fops, 0666, }, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 2144 | { "mbox", &spufs_mbox_fops, 0444, }, |
| 2145 | { "ibox", &spufs_ibox_fops, 0444, }, |
| 2146 | { "wbox", &spufs_wbox_fops, 0222, }, |
| 2147 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, |
| 2148 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, |
| 2149 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, |
| 2150 | { "signal1", &spufs_signal1_fops, 0666, }, |
| 2151 | { "signal2", &spufs_signal2_fops, 0666, }, |
| 2152 | { "signal1_type", &spufs_signal1_type, 0666, }, |
| 2153 | { "signal2_type", &spufs_signal2_type, 0666, }, |
Mark Nutter | 6df10a8 | 2006-03-23 00:00:12 +0100 | [diff] [blame] | 2154 | { "cntl", &spufs_cntl_fops, 0666, }, |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 2155 | { "fpcr", &spufs_fpcr_fops, 0666, }, |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 2156 | { "lslr", &spufs_lslr_ops, 0444, }, |
| 2157 | { "mfc", &spufs_mfc_fops, 0666, }, |
| 2158 | { "mss", &spufs_mss_fops, 0666, }, |
| 2159 | { "npc", &spufs_npc_ops, 0666, }, |
| 2160 | { "srr0", &spufs_srr0_ops, 0666, }, |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 2161 | { "decr", &spufs_decr_ops, 0666, }, |
| 2162 | { "decr_status", &spufs_decr_status_ops, 0666, }, |
Arnd Bergmann | 8b3d666 | 2005-11-15 15:53:52 -0500 | [diff] [blame] | 2163 | { "event_mask", &spufs_event_mask_ops, 0666, }, |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 2164 | { "event_status", &spufs_event_status_ops, 0444, }, |
Benjamin Herrenschmidt | 27d5bf2 | 2006-10-04 17:26:11 +0200 | [diff] [blame] | 2165 | { "psmap", &spufs_psmap_fops, 0666, }, |
Arnd Bergmann | 8676727 | 2006-10-04 17:26:21 +0200 | [diff] [blame] | 2166 | { "phys-id", &spufs_id_ops, 0666, }, |
| 2167 | { "object-id", &spufs_object_id_ops, 0666, }, |
Dwayne Grant McConnell | 69a2f00 | 2006-11-20 18:45:00 +0100 | [diff] [blame] | 2168 | { "mbox_info", &spufs_mbox_info_fops, 0444, }, |
| 2169 | { "ibox_info", &spufs_ibox_info_fops, 0444, }, |
| 2170 | { "wbox_info", &spufs_wbox_info_fops, 0444, }, |
Dwayne Grant McConnell | b9e3bd7 | 2006-11-20 18:44:58 +0100 | [diff] [blame] | 2171 | { "dma_info", &spufs_dma_info_fops, 0444, }, |
| 2172 | { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, |
Christoph Hellwig | 476273a | 2007-06-29 10:58:01 +1000 | [diff] [blame] | 2173 | { "tid", &spufs_tid_fops, 0444, }, |
Christoph Hellwig | e9f8a0b | 2007-06-29 10:58:03 +1000 | [diff] [blame] | 2174 | { "stat", &spufs_stat_fops, 0444, }, |
Arnd Bergmann | 67207b9 | 2005-11-15 15:53:48 -0500 | [diff] [blame] | 2175 | {}, |
| 2176 | }; |
Mark Nutter | 5737edd | 2006-10-24 18:31:16 +0200 | [diff] [blame] | 2177 | |
| 2178 | struct tree_descr spufs_dir_nosched_contents[] = { |
Benjamin Herrenschmidt | cbe709c | 2007-06-04 15:15:38 +1000 | [diff] [blame] | 2179 | { "capabilities", &spufs_caps_fops, 0444, }, |
Mark Nutter | 5737edd | 2006-10-24 18:31:16 +0200 | [diff] [blame] | 2180 | { "mem", &spufs_mem_fops, 0666, }, |
| 2181 | { "mbox", &spufs_mbox_fops, 0444, }, |
| 2182 | { "ibox", &spufs_ibox_fops, 0444, }, |
| 2183 | { "wbox", &spufs_wbox_fops, 0222, }, |
| 2184 | { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, |
| 2185 | { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, |
| 2186 | { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, |
| 2187 | { "signal1", &spufs_signal1_fops, 0666, }, |
| 2188 | { "signal2", &spufs_signal2_fops, 0666, }, |
| 2189 | { "signal1_type", &spufs_signal1_type, 0666, }, |
| 2190 | { "signal2_type", &spufs_signal2_type, 0666, }, |
| 2191 | { "mss", &spufs_mss_fops, 0666, }, |
| 2192 | { "mfc", &spufs_mfc_fops, 0666, }, |
| 2193 | { "cntl", &spufs_cntl_fops, 0666, }, |
| 2194 | { "npc", &spufs_npc_ops, 0666, }, |
| 2195 | { "psmap", &spufs_psmap_fops, 0666, }, |
| 2196 | { "phys-id", &spufs_id_ops, 0666, }, |
| 2197 | { "object-id", &spufs_object_id_ops, 0666, }, |
Christoph Hellwig | 476273a | 2007-06-29 10:58:01 +1000 | [diff] [blame] | 2198 | { "tid", &spufs_tid_fops, 0444, }, |
Christoph Hellwig | e9f8a0b | 2007-06-29 10:58:03 +1000 | [diff] [blame] | 2199 | { "stat", &spufs_stat_fops, 0444, }, |
Mark Nutter | 5737edd | 2006-10-24 18:31:16 +0200 | [diff] [blame] | 2200 | {}, |
| 2201 | }; |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 2202 | |
| 2203 | struct spufs_coredump_reader spufs_coredump_read[] = { |
| 2204 | { "regs", __spufs_regs_read, NULL, 128 * 16 }, |
| 2205 | { "fpcr", __spufs_fpcr_read, NULL, 16 }, |
| 2206 | { "lslr", NULL, __spufs_lslr_get, 11 }, |
| 2207 | { "decr", NULL, __spufs_decr_get, 11 }, |
| 2208 | { "decr_status", NULL, __spufs_decr_status_get, 11 }, |
| 2209 | { "mem", __spufs_mem_read, NULL, 256 * 1024, }, |
| 2210 | { "signal1", __spufs_signal1_read, NULL, 4 }, |
| 2211 | { "signal1_type", NULL, __spufs_signal1_type_get, 2 }, |
| 2212 | { "signal2", __spufs_signal2_read, NULL, 4 }, |
| 2213 | { "signal2_type", NULL, __spufs_signal2_type_get, 2 }, |
| 2214 | { "event_mask", NULL, __spufs_event_mask_get, 8 }, |
| 2215 | { "event_status", NULL, __spufs_event_status_get, 8 }, |
| 2216 | { "mbox_info", __spufs_mbox_info_read, NULL, 4 }, |
| 2217 | { "ibox_info", __spufs_ibox_info_read, NULL, 4 }, |
| 2218 | { "wbox_info", __spufs_wbox_info_read, NULL, 16 }, |
| 2219 | { "dma_info", __spufs_dma_info_read, NULL, 69 * 8 }, |
| 2220 | { "proxydma_info", __spufs_proxydma_info_read, NULL, 35 * 8 }, |
| 2221 | { "object-id", NULL, __spufs_object_id_get, 19 }, |
| 2222 | { }, |
| 2223 | }; |
| 2224 | int spufs_coredump_num_notes = ARRAY_SIZE(spufs_coredump_read) - 1; |
| 2225 | |